HomeMy WebLinkAboutCT 02-24; VILLAGES OF LA COSTA GREENS 1.11/.13/.14; SUPPLEMENTAL SOIL AND GEOLOGIC INV; 9999-01-01I
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SUPPLEMENTAL SOIL AND
GEOLOGIC INVESTIGATION
VILLAGES OF LA COSTA -
THE GREENS
CARLSBAD, CALIFORNIA
PREPARED FOR
MORROW DEVELOPMENT INCORPORATED
=/o VILLAGES OF LA COSTA
CARLSBAD, CALIFORNIA
MARCH 1999
GEOCON
INCORPORATED
GEOTECHNICAL CONSULTANTS
ProjectNo. 06403-12-01
March 24, 2000
Morrow Development Incorporated
c/o Villages of La Costa
Post Office Box 9000-685
Carlsbad, Califomia 92018-9000
Attention: Mr. Fred Arbuckle
Subject:
Gentlemen:
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
SUPPLEMENTAL SOIL AND GEOLOGIC INVESTIGATION
In accordance with your authorization (Contract Number 7244.09-028) and our proposal No. LG-
99484 dated October 28, 1999, we have performed a supplemental geotechnical investigation ofthe
subject site. This work complements previous soil and geologic investigations which have been
conducted on the property during the period of 1988 to date. The purpose ofthis report is to compile
all relevant previously generated data along with the results of the current study into a single
document presenting our conclusions and recommendations pertaining to the geotechnical aspects of
developing the site as proposed.
Significant geotechnical issues associated with the project include slope stability, remedial grading of
unsuitable soils, settlement of the alluvial soils left in place and rock rippability. However, it is our
opinion that the site may be developed as proposed, provided the recommendations of this report are
followed.
Should you have any questions regarding this report, or if we may be of further service, please
contact the undersigned at your convenience.
Very truly yours,
GEOCON INCORPO:
RCE 22527
AS:DFL:lek
(6/del) Addressee
6960 Flanders Drive • San Diego, California 92121-2974 • Telephone (858) 558-6900 • Fox (858) 558-6159
TABLE OF CONTENTS
1. PURPOSE AND SCOPE 1
2. SITE AND PROJECT DESCRIPTION 2
3. SOIL AND GEOLOGIC CONDITIONS 3
3.1 Santiago Peak Volcanics (Jsp) 3
3.2 Santiago Formation (Ts) 3
3.3 Lindavista Formation (Qhi) 4
3.4 Terrace Deposits (Qt) !!ZZ.."!.4
3.5 Landslide Debris (Qls) !I!1.."!!!!!!."..4
3.6 Alluvium (Qal) !."!!!I!!!Z!!,"5
3.7 Colluvium (Qc) .,."."."...,"!5
3.8 Topsoil (not mapped) 5
3.9 Undocumented Fill (Qudf) 5
3.10 Compacted Fill (Qcf) !!.."."."."!.Z"1"1"1.6
4. GROUNDWATER......... g
5. GEOLOGIC HAZARDS 7
5.1 Faulting and Seismicity 7
5.2 Liquefaction 7
6. GEOTECHNICAL LAND USE CHARACTERISTICS 8
6.1 General g
6.2 Slope Stability I"!!"."!™!."!."!8
6.2.1 Stability Considerations g
6.2.2 Stability Analysis , 9
6.3 Alluvium Settlement Considerations : 11
6.4 Rippability of Hard Rock 12
7. CONCLUSIONS AND RECOMMENDATIONS 13
7.1 General I3
7.2 Groundwater 14
7.3 Soil Excavation Characteristics 14
7.4 Grading 14
7.5 Subdrains 16
7.6 Settlement 17
7.7 Settlement Monitoring 17
7.8 Bulking and Shrinkage Factors 1 g
7.9 Slope Stability "Z""Z\9
7.10 Foundation Recommendations 19
7.11 Retaining Walls and Lateral Loads 23
7.12 Slope Maintenance 24
7.13 Drainage 25
7.14 Grading Plan Review 25
LIMITATIONS AND UNIFORMITY OF CONDITIONS
TABLE OF CONTENTS (Continued)
MAPS AND ILLUSTRATIONS
Figure 1, Vicinity Map
Figure 2, Geologic Map (Map Pocket)
Figures 3-5, Geologic Cross Sections (Map Pocket)
Figure 6, Typical Subdrain Detail
Figure 7, Typical Buttress Detail
Figure 8, Typical Stability Fill Detail
Figure 9, Slope Stability Analysis-Cut
Figure 10, Slope Stability Analysis-Fill
Figure 11, Surficial Slope Stability Analysis
APPENDIXA
FIELD INVESTIGATION
Figures A-l through A-38, Logs of Large-Diameter Borings
Figures A-39 through A-55, Logs of Small-Diameter Borings
Figures A-58 through A-168, Logs of Trenches
Figures A-169 through A-l 85, Logs of Air Track Borings
APPENDIXB
LABORATORY TESTING
Table B-I, Summary of Laboratory Maximum Dry Density and Optimum Moisture
Content Test Results
Table B-H, Summary of Laboratory Direct Shear Test Results
Table B-III, Summary of Laboratory Expansion Index Test Results
APPENDIXC
BORING AND TRENCH LOGS AND CONE PENETROMETER TESTS FROM
PREVIOUS INVESTIGATIONS
APPENDIXD
SELECTED BORING LOGS FROM RANCHO CARRILLO - MAJOR ROAD STUDY
APPENDIX E
SLOPE STABILITY ANALYSES
Figure E-l, Geologic Cross Section (Map Pocket)
Figures E-2 through E-6, Slope Stability Analyses
APPENDIXF
RECOMMENDED GRADING SPECIFICATIONS
SUPPLEMENTAL SOIL AND GEOLOGIC INVESTIGATION
1. PURPOSE AND SCOPE
This report presents the findings of a supplemental soil and geologic investigation for The Greens of
The Villages of La Costa in Carlsbad, Califomia (see Vicinity Map, Figure 1). The puipose of this
study was to present the data resulting from a recent surface and subsurface investigation along with
the geotechnical information from previous investigations of the project. This report is intended to
present recommendations relative to geotechnical aspects , of the site development including remedial
grading, slope stability, settlement, estimated rock rippability, bulking and shrinkage factors,
subsurface drainage and recommended grading specifications. It should be noted that the site was
previously known as La Costa Northwest.
The scope of the investigation included a review ofthe following:
1. Preliminary Soil and Geologic Investigation For La Costa - Northwest Area, Carlsbad,
Califomia, prepared by Geocon Incorporated, dated November 11, 1988 (Project
No. D. 4230-HOl).
2. Preliminary Rippability Study. La Costa Northwest, Carlsbad, Califomia, prepared by
Geocon Incorporated, dated September 25,1996 (ProjectNo. 04230-12-03).
3. Middle Eocene Paralic Facies, Northem San Diego County, Califomia, by L. I. Eisenberg
and P. K. Abbott, Eocene Geologic History San Diego Region, SEPM-GSA Fieldtrip
Guidebook, 1991.
4. Geologic Maps of the Northem part of San Diego County, Califomia, DMG open file report
96-02.
5. Geotechnical Investigation for Rancho Carrillo Project - Major Roads, Carlsbad,
Califomia, prepared by Geocon Incorporated, dated January 15, 1993 (Project No. 04787-
12-01).
6. Preliminary Geotechnical Investigation, Bressi Ranch, Carlsbad. Califomia, prepared by
Lighten & Associates, dated July 29,1997.
7. Final Report of Testing and Observation Services During Grading and Construction of Site
Improvements, Poinsettia Sewage Lift Station, Rancho Carrillo. Carlsbad, Califomia,
prepared by Geocon Incorporated, dated November 3,1998 (Project No. 05845-12-13).
8. Final Report of Testing and Observation Services During Construction of Site Improvements.
Rancho Carrillo.^ Offsite Sewer Main and Associated Access Road, Carlsbad, Califomia,
prepared by Geocon Incorporated, dated April 22,1999 (Project No. 05845-12-12).
9. Unpublished reports, aerial photographs and maps on file with our firm.
Project No. 06403-12-01 - 1 - March 24,2000
The scope of the current "field investigation consisted of a site geologic reconnaissance and the
drilling of 11 small-diameter borings, 19 large-diameter borings and 113 exploratory trenches. In
addition, 17 hydraulic air-track borings were excavated within the hard rock area located in the
southeastem comer ofthe project. Laboratory tests were performed on selected soil samples obtained
at various depths in the exploratory excavations to evaluate pertinent physical properties. Details of
the field exploration and laboratory testing programs are presented in Appendix A and B,
respectively. Logs of exploratory excavations from previous studies along with laboratory test results
and CPT (cone penetrometer test) soundings are presented in Appendix C. Selected logs of
exploratory excavation from Rancho Carrillo Major Roads, project are presented in Appendix D.
The recommendations presented herein are based on analysis of data obtained from our recent and
previous exploratory excavations, laboratory tests and our experience with similar soil and geologic
conditions. The base map used for this study consists of a conceptual grading plan, 1 inch equals 200
feet (1" = 200') scale, entitled La Costa Greens, Conceptual Lotting Study, prepared by T & B
Planning Consultants, Inc., dated October 29, 1999. The results of the field investigation are
compiled on the Geologic Map, Figure 2.
2. SITE AND PROJECT DESCRIPTION
The subject project encompasses approximately 750 acres of property situated northeast of the
intersection of Alga Road and El Camino Real in the City of Carlsbad, Califomia (see Vicinity Map,
Figure 1). Existing residential development borders the middle western, southeastem and southem
portions, with conmiercial and agricultural developments along the southwestem and northem
portions, respectively.
With the exception of a golf course and two residential stmctures in the south-central portions, the
majority of the property is undeveloped. Several easements for buried pipelines, embankments
associated with roads and ponds, and bordering streets contain undocumented fill soils (see Geologic
Map, Figure 2).
Topographically, the site is dominated by a major north-south draining alluvial valley fed by three
large tributaries in the north portion of the property. The majority of the site is characterized by
moderately sloping hillside terrain dissected by a dendritic pattem of drainages which have a central
confluence draining southward into San Marcos Creek. Elevations vary from a high of approximately
400 feet Mean Sea Level ^SL) along the southeast boundary to a low of approximately 60 feet MSL
within the main drainage basin towards southem property boundary.
ProjectNo. 06403-12-01 -2- March24,2000
It is our understanding that" project development will consist of grading the site to form terraced and
sheet-graded building pads that eventually will receive 800 residential units along with associated
infrastmcture.
A review of the referenced La Costa Greens, Conceptual Lotting Study plan indicates maximum
proposed cut and fill slopes with heights on the order of approximately 100 and 40 feet, respectively,
with a maximum slope inclination of 2:1 (horizontal to vertical).
3. SOIL AND GEOLOGIC CONDITIONS
Six surficial soil types and three geologic formations were encoimtered during the investigation. The
surficial soils consist of compacted fill, undocumented fill, topsoil, colluvium, alluvium and landslide
debris. The formational units include Quatemary-aged Terrace Deposits, Tertiary-aged Santiago
Formation, and Jurassic-aged Santiago Peak Volcanics. Each of the soil types and geologic units
encountered are described below and their approximate mapped extent is depicted on Figure 2,
Geologic Map (map pocket).
3.1 Santiago Pealc Volcanics (Jsp)
Fractured and weathered metavolcanic rocks of the Jurassic-aged Santiago Peak Volcanics are
exposed along the upper portions of slopes in the southeastem comer of the site. These rocks
typically display a highly variable depth of decomposition. Where completely decomposed, these
rocks excavate similar to blocky, hard, silty clay. Based on review of previous investigations (see
referenced reports), and our preliminary borings and refraction seismic study, it is estimated that this
unit will generally be rippable to depths on the order of 5 to 15 feet. In general, hard rock areas will
require preblast considerations and special handling during grading as presented in the concluding
section ofthis report.
3.2 Santiago Formation (Ts)
The Eocene-aged Santiago Formation, consisting of dense, massive, white to light green, silty fine to
coarse sandstones and hard, greenish-gray to brown claystones and siltstones underhe the surficial
soils throughout the entire project site.
A review of data from the exploratory borings indicates that weak, fractured clay layers, "bedding
plane shears", and inactive fault features are present within the Santiago Formation. These features
will adversely impact the stability of the proposed major cut slopes within the development and
require remediation. The Santiago Formation generally possesses suitable geotechnical characteristics
in either an undisturbed and/or properly compacted condition. Excavations in the more sandy portions
may provide a sufficient quantity of "very low" to "low" expansive capping materials. However, the
ProjectNo. 06403-12-01 ~- March 24,2000
claystone and siltstone portions of the Santiago Fomiation are moderately to highly expansive.
Consideration should be given to restricting the placement ofthese materials within 4 feet of finish
grade. Where selective grading is not practical and these expansive soils are placed at grade, special
design will be necessary for foundations and concrete flatwork, and roadway pavement sections will
be greater due to typically lower resistance R-Values ofthese soils.
It should be noted that in previous reports these materials were classified as The Delmar Formation
and the Torrey Sandstone. Recent publications including Reference No. 3 classify these materials
with the Eocene-aged sediments of northem San Diega County as the Santiago Formation. This
should be taken into consideration in the review of logs of borings and tirenches from our previous
studies, presented in Appendices C and D.
3.3 Lindavista Fomiation (Qln)
Quatemary-aged Lindavista Formation comprised of light reddish-brown to orange gravelly silty
sandstones were encountered as a cap of several feet thick on top ofthe Santiago Fonnation along the
northwest margins of the site. These materials, possesing "very low" to "low" expansive
characteristics, should provide good foundation-bearing characteristics in either an undisturbed
and/or properly compacted condition.
3.4 Terrace Deposits (Qt)
Stream-deposited terrace deposits were encountered to overlie the Santiago Formation, mostly within
the lower portions ofthe major drainages. These sediments consist of moderately dense, yellowish to
reddish brown clayey sand and silty sand with some clay. In general, these materials, except for the
upper 2 to 3 feet are considered suitable to receive fill. The upper 2 to'3 feet are usually weathered
and more porous and, therefore, will require remediation prior to receiving any fill.
3.5 Landslide Debris (Qls)
One deep-seated landslide and several smaller surficial landslides were mapped within the site. The
larger landslide is located in the east central portion of the property. Boring No. LB-8 indicates a
thickness of approximately 25 feet. The smaller landslides are generally shallower in depth. The
landslide debris generally consists of relatively compressible, clayey sand and sandy clay. Remedial
grading to remove the landslide debris will be necessary. One of the suficial landslides is located
along the northem property boundary and encroaches off-site. In the event the property boundary
limits total removal, the proposed cut slope will be stabilized by constmction of a buttress fill.
Preferably, permission to grade off-site should be obtained to allow total removal with regrading
considering future planned grading on the adjacent property.
ProjectNo. 06403-12-01 -4- March 24,2000
3.6 Alluvium (Qal)
The alluvium encountered onsite generally consists of dark brown sandy clays to clayey sands. The
alluvium in the major drainages has a water table at a minimimi encountered depth of 8 to 10 feet
below the surface. The maximum thickness of alluvium occurred in CPT-4 which encountered
approximately 60 feet of relatively easily penetrable sediments near the confluence of tributary
drainages. The bottom part of the sediments may consist of weathered Santiago Fonnation or more
granular materials, the extent of which is not known. The results of the field investigation and
analysis ofthe laboratory test data indicate that the alluvial soils underlying the site can be classified
as moderately to highly compressible. Development within areas containing alluvium will require
remedial grading in the form of removal and recompaction to mitigate potential settiement problems.
The anticipated depths of alluvium removal and recompaction are shown on Figure 2. These vary
from a range of 7 to 10 feet in the lower central valley area to a range of 8 to 28 feet in the higher
surrounding side valleys. Remedial work will be limited by the depth of the groundwater within
different areas. The settlement potential and stability of the embankments placed over alluvial soils
left in place present geotechnical considerations to future site development and will require
mitigation as discussed below.
3.7 Colluvium (Qc)
Colluvial soils occur along the canyon side-slopes, low areas, the base of natural slopes, and along
the head scarps of landslides. These deposits are often indistinguishable from alluvium and thick
topsoil deposits, therefore, only the thicker, or potentially thicker areas have been mapped separately
on Figure 2. The maximum observed thickness of these materials is on the order of 11 feet as exposed
in Trench No. T-14, located in the central eastem portion of the site. In general, these deposits consist
of poorly consolidated sandy clays to clayey sands and are potentially compressible. Development
within areas underlain by colluvium will require remedial grading as recommended in the concluding
sections ofthis report.
3.8 Topsoil (not mapped)
Topsoil blankets the majority of the site to an average depth of approximately 2 feet The topsoil is
typically composed of dark brown silty sands to sandy clays. The potential for both expansion and
consolidation indicate that the topsoil should be removed and recompacted as discussed in the
Conclusions and Recommendations section of this report.
3.9 Undocumented Fill (Qudf)
At least two generations of fill are present on the site. The earlier fills consist of pond embankments
or dams installed pre-1953 which are of unknown compaction and depth. The approximate areal
Project No. 06403-12-01 - 5 - March 24, 2000
extents are shown on Figure 2. No trenches were performed in the embankment fills, but observation
of the exposed surficial soils indicates that the earthem structures are composed of silt and clay
derived from onsite materials.
Later generations of fill are associated with the burial of pipelines and utilities, constmction of roads
and adjoining subdivisions, or fill disposal areas in canyon areas along the southem margins of the
property. These materials are considered unsuitable in their present conditions and should be removed
and recompacted in areas of planned improvements.
3.10 Compacted Fill (Qcf)
Compacted fills have been placed within the project site during recent constmction of the sewer
pump station located within the north central portion of the project along with associated sewer
relocation and the access road. The sewer line traverses the property from east to west and was
constmcted as a part of the development of the Rancho Carrillo project to the east. The grading for
the pump station, sewer trench backfill and constmction of the access road was performed under
testing and observation services of Geocon Incorporated and reported in References 7 and 8,
4. GROUNDWATER
Groundwater seepage was observed in the form of a spring within the canyon located at the southeast
comer of the site. Numerous water seeps were encountered in the exploratory excataions along the
northem and eastem boundary (see Boring Nos. LB-1, LB-8, LB-13, LB-17 and LB-19 ofthe current
study, and Boring Nos. B-4, B-11, and B-13 through B-17 of our pervious investigation.
Appendix C). These seeps were found to occur within the Santiago Formation or within the landshde
debris and the Santiago Formation-Santiago Peak Volcanics contact. The depth of water seepage
varies. Irrigation from developments on the property margins, as well as perched water draining off a
relatively shallow westward sloping volcanic bedrock surface may be responsible sources. Grading
plans should consider the groundwater conditions to assure drainage features, e.g., canyon subdrains,
drained stability/buttress fills, etc., are incorporated into the final design as appropriate.
Due to the nature of the Santiago Formation, which consists of interbedded sandstone and
claystone/siltstone, seepage may occur along the proposed cut slopes with these materials. In
addition, a more permanent groundwater table is present within the alluvial valley and tributary
canyons. At the north-central confluence of drainages, the water table was approximately 8 to 10 feet
below the surface (during pur previous investigation). The relationship between alluvial removals and
the position of groundwater table will be discussed in the Conclusions and Recommendations section
of thisreport.
Project No. 06403-12-01 - 6 - March 24, 2000
5. GEOLOGIC HAZARDS
5.1 Faulting and Seismicity
It is our opinion, based on the site reconnaissance, evidence obtained in the exploratory excavations
and a review of published geologic maps and reports, that the site is not located on any known active
fault trace. A few minor inactive faults were encountered within the Santiago Formation. These faults
are generally in a north-south orientation. The nearest known active faults are the Rose Canyon Fault
and the Newport-Inglewood (offshore) located approximately 7 and 10 miles, respectively, to the
west and Elsinore Fault Zone which lies approximately 23 miles to the northeast.
Maximum Credible and Maximum Probable Seismic events of Magnitude 6.9 and Magnitude 5.7,
respectively, are postulated for the Rose Cayone Fault. The estimated Maximum Credible and
Maximum Probable Peak site acceleration are 0.30g and 0.15g, respectively. Seismic parameters for
the other regional faults capable of generating ground acceleration at the site are summarized on
Table 5.1
TABLE 5.1
DETERMINISTIC SITE PARAMETERS FOR SELECTED FAULTS*
Fault Name
Distance
From Site
(miles)
Maximum Credible Event Maximum Probable Event
Fault Name
Distance
From Site
(miles)
Maximum
Credible
(Mag.)
Peak Site
Acceleration
(g)
Maximum
Probable
(Mag.)
Peak Site
Acceleration
(g)
Rose Canyon 7 6.90 0.30 5.70 0.15
Newport-lnglewood-Offshore 10 6.90 0.23 5.80 0.11
Coronado Bank 22 7.40 0.16 6.30 0.08
Elsinore-Julian 23 7.10 0.13 6.40 0.08
EIsinore-Temecula 23 6.80 0.11 6.30 0.07
Palos Verdes 41 7.10 0.07 6.20 0.03
San Jacmto-Anza 46 7.20 0.06 6.90 0.05
•EQFault Computer Program, Blake 1997.
It is our opinion that the site could be subjected to moderate to severe ground shaking in the event of
a major earthquake along any of the above-mentioned faults, however, the seismic risk at the site is
not considered to be significantiy different than that of the surrounding developments of similar
geologic settings in the Carlsbad area.
5.2 Liquefaction
The potential for liquefaction during a strong earthquake is limited to cohesionless soils which are in
a relatively loose, unconsolidated condition and located below the groundwater level. Due to the
Project No. 06403-12-01 •7-March 24, 2000
dense nature of the formational units, the removal and recompaction of the surficial soils and fine-
grained nature ofthe alluvial soils, the potential for seismically included soil liquefaction occuiring at
the site is considered to be low.
6. GEOTECHNICAL LAND USE CHARACTERISTICS
6.1 General
Based on fmdings of this study, there are three primaiy geotechnical considerations impacting the
constmction of the site as planned. The first design consideration is the potential for cut slope
instability caused by the presence of weak clay seams or bedding plane shears (BPS). The second
consideration is the settlement characteristics of the alluvial deposits that cannot be efficientiy
removed and recompacted due to the presence of shallow groundwater within the drainage courses.
The third consideration is the rippability characteristics of the volcanic rocks within the southeast
portion of the project A discussion of each primary geotechnical consideration relative to proposed
development is presented below.
6.2 Slope Stability
6.2.1 Stability Considerations
The results of the field investigation for the project indicate the presence of numerous adverse
geologic conditions in some of the proposed major cut slopes. The adverse geologic conditions
encountered include remolded bedding plane shears (BPS), weak clay strata, groundwater seepage,
inactive faulting and landslide debris. Remedial grading procedures, such as construction of drained
buttress fill or stability fill should be anticipated for cut slope excavations exposing these potentially
unsuitable geologic consitions.
Slope stability analyses for these slopes have been performed utilizing the parameters shown in
Table 6,2. The results are presented in Appendix D. A brief discussion of the proposed cut slopes that
are anticipated to be impacted by adverse conditions along with mitigation recommendations is
presented below. It should be noted that where the geologic adverse conditions are limited to the
surficial stability of the slopes, construction of a stability fill is recommended. For cut slopes in
homogeneous materials and fill slopes, a different method of stability analyses has been utilized as
discussed in the Conclusions and Recommendations section of this report.
Project No. 06403-12-01 -8- March 24,2000
6.2.2 Stability Analysis
6.2.2.1 General
Computer analyses of slope stability were performed utilizing tiie SLOPEW program based on
simplified Janbu Metiiod of Slices or Simplified Bishop Method. The complexity ofthe site geology,
the results oftiie subsurface investigation, laboratoiy testing and existing and future topography were
considered in performing the stability analyses. The analyses are summarized in Appendix E,
The geometry of proposed cut slopes were developed by extrapolating the conditions encountered in
the exploratory excavations. The computer-generated cross sections included herein presents tiie
simplified section configuration which were used in the analyses. The cross sections presented in
Figure E-l, Appendix E, are the original geologic sections from which the computer-generated
sections were generated.
6.2.2.2 Design Parameter Selection
Drained shear tests were performed on relatively undisturbed samples of the prevailing lithologic
units. Additional shear tests were performed on a remolded sample of formational soils to evaluate
strength parameters suitable for tiie fill soil to be used to stabilize the slopes. The results ofthe shear
tests are presented in Table B-I of Appendix B. The following table presents the soil strength
parameters that were utilized in the analyses. These values are derived from the laboratory test results
and experience with similar soil and geologic conditions. A discussion of the specific cut slopes
requiring remediation by buttressing is assessed below. Locations by assigned number are shown on
Figure 2.
TABLE 6 2 2 2
SOIL STRENGTH PARAMETERS
SoU Type. Angle of Internal Friction
(|> (degrees)
Cohesion
c(psO
Santiago Fonnation 30 500
Weak Clay Beds 20 200
Compacted Fill (buttress) 25 300
Bedding Plane Shears (BPS) 10 100
6.2.2.3 Cut Slope No. 1
This cut slope is located along the northem boundary. The concepmal grading plan indicates that the
maximum height ofthis slope will be approximately 45 feet. Figure E-l presents a geologic cross
Project No. 06403-12-01 -9-March 24,2000
section of tiie slope (K-K'). A bedding plane shear was encountered in Boring No. B-15 at tiie
approximate elevation of 277 feet MSL. Slope stability analyses indicate that a buttress fill with a
minimum key width of 40 feet will be required to provide a factor of safety in excess of 1.5.
6.2.2.4 Cut Slope No. 2
This slope is also located along the northem property boundary. During the site investigation, a
bedding plane shear (BPS) was encountered at the approximate elevation of 261 feet MSL (see Cross
Section LL' on Figure E-l). In addition, the eastem portion of this slope will be cut into an existing
landslide. This slope has a maximum height of 40 feet Slope stability analyses indicates a buttress fill
with a 40-foot wide shear key will be required.
6.2.2.5 Cut Slope No. 3
Cut slope No, 3 is located just southeast of cut slope No, 2. This slope has a maximum height of
approximately 37, A soft saturated clay seam was encountered in Boring No. LB-14 at the
approximate elevation of 177 feet (MSL). This clay seam would daylight (if continuous) at tiie toe of
the proposed cut slope. Geologic Cross Section M-M' Figure E-l depicts tiie anticipated geologic
condition. A buttress fill with a minimum width of 40 feet has been designed for this slope.
6.2.2.6 Cut Slope No. 4
The proposed approximately 100 feet high cut slope is located within the east-central postion of the
site. The subsurface exploration indicates a presence of an inactive fault that may impact the gross
stability ofthis slope (see Cross Section GG', NN, and Boring No. B-l). The slope stability analyses
indicates that based on the information available, this cut slope should have an adequate factor of
safety against deep-seated failure. The lower portion of this cut slope, however, may require
constmction ofa stability fill due to the possibility of groimdwater seepage near the toe of the slope.
6.2.2.7 Cut Siope No. 5
This cut slope is located along the south-facing slope within the southeast portion of the project,
adjacent to the SDG&E easement. Review of the log for Boring No. LB-7 indicates the presence of a
bedding plane shear at approximate elevation of 176 feet (MSL) (see Cross Section 00' on Figure
E-l). Stability analysis indicates a factor of safety of less than 1.5 for the proposed cut slope.
Therefore, a buttiess fill with a minimum shear key width of 40 feet will be necessary to stabilize
this slope.
Project No. 06403-12-01 - 10 - March 24,2000
6.3 Alluvium Settlement Considerations
Where total removal and recompaction of the alluvial soils is not practical due to the presence of
groundwater, alluvium will be left in place. Planned embankment fill placed within certain portions
oftiie main drainages will be affected by the compressibility of alluvial soils not removed.
The amount of settiement that could occur is a function of thickness and compressibility ofthe layers
within the alluvial deposits, and the magnimde of additional vertical loading resulting from placement
of fill and/or structures. The majority of the alluvium/colluvium will be removed within tiie two
drainage features where groundwater will not restrict grading. However, it is estimated that between
20 and 40 feet of saturated alluvial soils will be left in place undemeath the proposed Poinsettia Lane
and the area just to the north, A review of the conceptual grading plan indicates that between
approximately 15 and 25 feet of fill will be placed on the area just nortii of the proposed Poinsettia
Lane within the northeast portion ofthe project site. The amount of estimated settlement, depending
upon the specific locations, ranges from 2 to 8 inches. The majority ofthe settiement is anticipated to
occur during constiruction. The post-construction settiement dependant on the proposed fill height
will take anywhere from 2 to 6 months for 90 percent consolidation (primary settiement).
The proposed embaiikment fill associated with the extension of Alicante Road, to be located just
northeast of the golf course, will be underlain by approximately 60 feet of alluvium. The proposed
additional fill for the embankment ranges from 15 to 20 feet. The total settlement is estimated to be
approximately 10 to 12 inches with the given embankment loading. The time required for primary
settiement to occur is estimated at 6 to 8 months.
The removal and recompaction oftiie alluvial soils for the central portion of Poinsettia Lane will also
be limited due to the close proximity of the golf course. Groundwater should not be a constiaint in
this area.
It is assumed that the existing sewer lines with the northeastem portion of the project will be
relocated to their permanent locations in Poinsettia Lane. This, of course, requires that the road
embankment for Poinsettia Lane be constructed and after the settlement-monitoring program is
satisfactorily implemented, the utility lines will be installed.
If the site development schedule cannot accommodate the time required to allow the primary
settiement to dissipate, the installation of wick drains prior to placement of the embankment fills
should be considered. The use of wick drains could reduce tiie settlement period of 6 to 8 months to 1
to 3 months.
Project No. 06403-12-01 - 11 - March 24, 2000
A settlement monitoring program consisting of buried settlement plates and surface monuments
should be established for each settlement-sensitive area. A detail of settlement monitoring program is
presented hereinafter.
6.4 Rippability of Hard Rock
The Santiago Peak Volcanics (Jsp) are exposed along the upper slopes in the southeast portion of the
site. These rocks are at various stages of weathering, and will therefore excavate differently. A
rippibility study was performed to evaluate potential difficulty in excavations during grading in this
area.
Initially, ten seismic refraction fraverses were conducted in 1996. This was followed up by
excavating 17 air-track borings during the current phase of investigation. The results indicate a
variable but relatively shallow depth of rippable materials. It appears that the depth of rippable
materials increases at lower site elevations. It should be noted, however, that the actual extent of
rippability may exceed the interpreted depth where fracturing within the rock is present. It is our
experience that where the fracturing is extensive, grading may be possible, although more difficult
grading in this condition requires an extensive irrigation soaking to soften the firacture zones.
The approximate depth of rippable materials are shown next to the locations of the air-frack borings
on Figure 2. The logs of the air-track borings are presented in Appendix A.
Project No. 06403-12-01 -12 - March 24,2000
7. CONCLUSIONS AND RECOMMENDATIONS
7.1 General
7.1.1 No soil or geologic conditions were encountered during this investigation perfonned by
Geocon, Incorporated or those previous studies referenced that would preclude the
development of the property as presently planned, provided the recommendations of this
report are followed.
7.1.2 The surficial soil units (undocumented fill, topsoil, colluvium, alluvium, and landslide
debris) are not considered suitable for support of fill or stmctural loads in their present
condition and will require remedial grading where not limited by the presence of
groundwater.
7.1.3 The settlement potential of the alluvial deposits left in place will require special
consideration during the planning and constmction of site improvements. A surcharge
grading program, including settlement instrumentation and monitoring will be required for
those areas of plaimed improvements within the zone of influence of left-in-place
alluvial soils.
7.1.4 The stability of proposed cut slopes witiiin the site possess a significant geotechnical
consideration to development. Drained butfresses and stability fills will be required to
stabilize slopes underlain by potentially unstable geologic features.
7.1.5 Grading and installation of deeper utilities within the area underlain by rock (Santiago Peak
Volcanics) will be difficult, especially at the lower portion of planned cut. Blasting along
with special handling of the rock should be anticipated. Building pads and sfreets should be
undercut to allow capping with at least 3 feet of granular soils to facilitate installation of
surface improvements.
7.1.6 Remedial grading to stabilize adverse geologic conditions may require encroaching beyond
the property limits in certain areas, e.g.. Cut Slope No. 2 and possibly Cut Slope No. 1, to
effect total removals. Therefore, permission to grade off-site should be obtained.
Furthennore, the remedial grading should consider future grading planned for tiie adjacent
property.
7.1.7 A suspected water well was encountered during our field investigation near CPT 4 at the
Central Confluence of drainage. All encountered wells should be properly abandoned per
the County of San Diego Health Department.
Project No. 06403-12-01 - 13 - March 24, 2000
7.2 Groundwater'
7.2.1 The principal area of the project where groundwater will impact site development is the
areas within the main canyon. Remedial grading ofthe compressible alluvial deposits will
be limited to approximately 3 feet above the groundwater. Groundwater seepage were also
encountered in some of the exploratory excavations. It is recommended that periodic
observations be made by the soil engineer or engineer geologist during grading for
constmction for the presence of groundwater. It is further recommended that after canyons
are cleaned of unsuitable soils, a subdrain be installed within the bottom of the removal
areas to reduce the potential for groundwater buildup within the canyon fills.
7.3 Soil Excavation Characteristics
7.3.1 Based on field observations and laboratory tests, the prevailing soils are anticipated to vary
from "very low" expansive sandy soils to "medium" to "high" expansive silty clays.
7.3.2 Excavation ofthe on-site surficial and formational units should be possible with moderate
to heavy effort with conventional heavy-duty equipment The alluvium and colluvial soils
may be wet to saturated and grading should anticipate the need to dry back or mix with
drier material prior to their use as compacted fill.
7.3.3 Excavation of the volcanic rocks would require heavy ripping and possible blasting. It is
estimated that the proposed grading will encounter rippable rock to depths on the order of 5
to 15 feet below existing ground surface. Surface blasting will be required where highly
resistant volcanic rocks are exposed. It is likely, however, that excavations greater than 15
feet within the major cut areas will encounter marginal to nonrippable rock conditions.
Oversize rocks should be placed in accordance with the Recommended Grading
Specifications presented in Appendix F.
7.4 Grading
7.4.1 All grading should be performed in accordance with the city of Carlsbad grading ordinance
and the Recommended Grading Specifications contained in Appendix F. Where the
recommendations of Appendix F conflict with this section of the report, the
recommendations ofthis section shall take precedence.
7.4.2 Prior to commencing grading a preconstmction conference should be held at the site with
the grading confractor, civil engineer and geotechnical engineer in attendance. Specified
soil handling and/or the grading plans can be discussed at that time.
Project No. 06403-12-01 -14 - March 24,2000
7.4.3 Site preparation-should begin with the removal of all deleterious material and vegetation.
The depth of removal should be such that material exposed in cut areas or soils to be used
as fill is relatively free of organic matter. Material generated from stripping and/or site
demolition should be exported from the site.
7.4.4 Rock generated from grading and/or blasting should be handled in accordance with the
procedures recommended in Appendix F.
7.4.5 All potentially compressible surficial soils (undocumented fill, topsoil, alluvium,
colluvium, and landslide debris) within areas of planned grading should be removed to firm
natural ground (except where limited by groundwater) and properly compacted prior to
placing additional fill and/or structural loads. The actual extent of removals shall be
determined in the field by the soil engineer and/or engineering geologist. Overly wet,
surficial materials will require drying back and/or mixing with drier soils to facilitate
proper compaction.
7.4.6 If groundwater is encountered during remediation of the alluvium, as anticipated along the
lower elevation areas ofthe main drainage courses, removals should be terminated at about
3 feet above the water level. It is recommended that these areas be "pot-holed" and
observed by the project geologist to verify the groundwater elevation during grading.
7.4.7 During remedial grading temporary slopes should be inclined no steeper than
l:l(horizontal to vertical). Grading should be scheduled to backfill against these slopes as
soon as practical and no temporary slope should be left exposed longer than 2 days. More
stringent grading scheduling requirements may be imposed by the soils engineer when
performing removals adjacent to the property boundary.
7.4.8 The site should then be brought to final subgrade elevations with stmctural fill compacted
in layers, in general, soils present on site are suitable for re-use as fill if free from
vegetation, debris and otiier deleterious material. Layer of fill should be no thicker than
will allow for adequate bounding and compaction. Including backfill and scarified ground
surfaces, should be compacted to at least 90 percent of maximum dry density at
approximately 2 percent over optimum moisture content, as determined in accordance with
ASTM test procedure D 1557-91. Fill materials near and/or below optimum moisture
content will require additional moisture conditioning prior to placing additional fill.
7.4.9 Areas of planned improvements designated as underlain by or within the zone of influence
of left-in-place alluvium may be surcharged by placing additional fill to a depth of 5 feet
above proposed finished grade, including slopes. The surcharge shall remain in place until
Project No. 06403-12-01 - 15 - March 24, 2000
tiie soils engineer recommends removal. The decision to surcharge should be made early in
the grading phase and based on tiie benefit to tiie overall development schedule.
7.4.10 To reduce tiie potential for differential settlement, it is recommended tiiat tiie cut portion of
cut-fill building pads be undercut at least 4 feet and replaced with compacted "very low" to
"low" expansive fill soils. The bottom of the undercut portion should be sloped at about 1
percent toward the fill portion to facilitate drainage of future subsurface water.
7.4.11 Where practical, tiie upper 4 feet of all building pads (cut and fill) should consist of "very
low" to "low" expansive soils. This will require undercutting cut pads where unsuitable
expansive soils are exposed at finish grade. The more highly expansive fill soils should be
placed in deeper fill areas, "very low" to 'low" expansive soils.
7.4.12 Building pads and sfreets underiain by hard rock (Santiago Peak Volcanics) should be
undercut at least 3 feet and compacted fill consisting of "very low" to "low" expansive soils
placed to achieve finish grade.
7.5 Subdrains
7.5.1 Subdrains should be installed in tiie canyons to be filled. A cross-section of tiie subdrain
configuration is presented on Figure 6. The lower 20 feet oftiie subdrain installation should
consist of nonperforated pipe with a concrete cutoff wall consbucted immediately below
the junction of tiie perforated pipe witii tiie nonperforated pipe. The cutoff wall should
extend at least 6 inches below the sides and bottom of the subdrain french and 6 inches
above the top of the pipe.
7.5.2 In order to maintain a drainage gradient within the canyon subdrain system, it may be
necessaiy to extend the nonperforated outiet pipe beyond the limits of planned grading
operations. As an altemative design, a properly compacted fill may be placed witiiin the
lower canyon bottom until the minimum drainage gradient is achieved. Two subdrains
would tiien be installed along tiie fill/natinral ground contacts. Where tiie natural slope
gradient exceeds 5 percent, the perforated pipe may be deleted from the subdrain system
when recommended by the project soil engineer or geologist.
7.5.3 Heel drains installed in the butfresses and stability fills should be connected to the canyon
subdrain or storm drain system where possible and have cleanouts installed or where
possible.
Project No. 06403-12-01 - 16 - March 24,2000
7.5.4 After installation of the subdrains and heel drains, the project civil engineer should survey
its location and prepare "as-built" plans of the subdrain location. The project civil engineer
should verify the proper outiet for the canyon subdrains and the confractor should ensure
that the drain system outlet is free of obstmctions. The recommended locations of the
canyon subdrains will be finalized during a review of the final site grading and
improvement plans.
7.6 Settlement
7.6.1 As previously discussed, embankment fills placed over alluvium left in place due to
groundwater grading constraints will experience varying amounts of settiement as a
function of the thickness of the compressible soils remaining and the loading of the fill.
The majority of the settiement is expected to occur during the grading phase of
development, however, the time to achieve primary settlement may extend to as long as 8
months.
7.6.2 It is recommended that grading in these areas be planned to occur early in the project
grading period to reduce the potential for conflict with installation of improvements.
7.6.3 Other considerations include placement of a surcharge (5 feet) above the planned grade. In
addition, installation of a wick drain system would enable greatiy accelerating the time-rate
of settiement.
7.6.4 Settiement monitoring will be required as discussed below to evaluate when the fill has
stabilized and further improvements may proceed,
7.7 Settlement Monitoring
7.7.1 Where compressible alluvial soils are left in-place a settlement momtoring program will be
required as discussed below.
7.7.2 At designated locations within the bottom of the over-excavated areas, a 4-foot-square, /4-
inch-thick steel plate should be placed at 2 feet below the bottom elevation and leveled
with a layer of gravel. After surveying the plate (Horizontal and Vertical), the plate should
be covered with 2 feet of gravel and at least 2 feet of fill soil placed before heavy
equipment is allowed to run over the plate location. The steel plate and gravel as well as
equipment for installation should be provided by the grading confractor.
Project No. 06403-12-01 - 17- March 24, 2000
7.7.3 Subsequent to placement of the planned embankment fill, including the surcharge (if
recommended), Geocon, Incorporated will drill and "tag" the steel plate. The civil engineer
will then survey the plate to determine settlement which occurred during grading. At that
time a surface settlement monument will be installed to monitor settiement movement
thereafter.
7.7.4 Surveying of the surface monument should be performed by the project civil engineer on a
weekly basis with the results provided to Geocon, Incorporated. Settlement due to primary
consolidation will be considered to have ceased when survey readings show essentially no
movement over 4 consecutive weekly readings. At that time, Geocon Incorporated will
prepare a report, recommending surcharge removal, for submittal to and approval by the
City of Carlsbad.
7.8 Bulking and Shrinkage Factors
7.8.1 Estimates of embankment bulking and shrinkage factors are based on comparing laboratory
compaction tests with the density of the material in its natural state as encountered in the
exploratory excavations. It should be emphasized that variations in natural soil density, as
well as in compacted fill density, render shrinkage value estimates very approximate. As an
example, the contractor can compact the fill soils to any relative compaction of 90 percent
or higher ofthe maximum laboratory density. Thus, the confractor has approximately a 10
percent range of confrol over the fill volume. Based on the limited work performed to date,
it is our opinion that the following shrinkage and bulking factors can be used as a basis for
estimating how much the on-site soils may shrink or swell (bulk) when excavated from
their natural state and placed as compacted fills.
TABLE 7.8
SHRINK/BULK FACTORS
SoU Unit Shrink/Bulk Factor
Fill and TopsoU 10-15 percent shrink
Alluvium and CoUuvium 10-15 percent shrink
LandsUde Debris 5-10 percent shrink
Terrace Deposits 2-7 percent shrink
Santiago Fonnation and Lindavista Formation 3-5 percent bulk
Santiago Peak Volcanics 20-30-percent bulk
Project No. 06403-12-01 - 18-March 24, 2000
7.9 Slope Stability
7.9.1 Due to the presence of adverse geologic features within the Santiago Formation, it is
recommended that certain cut slopes planned within the project be constmcted as a drained
butfress fill to mitigate long term surficial slope stability. A typical detail showing
constmction ofa butfress fill is presented on Figure 7.
7.9.2 Construction of drained stability fill may also be required for cut slope No. 4 (see
Section 6.0). A typical detail showing constmction ofa drained stability fill is presented on
Figure 8.
7.9.3 The results of analyses for gross stability indicate that cut and fill (non-stabilized) slopes
have a factor of safety in excess of 1.5 for the maximum anticipated heights (see Figures 9
and 10), Surficial slope stability analysis of fill slopes also indicates a factor of safety in
excess of 1,5 (see Figure 11).
7.9.4 The results of slope stability analyses for cut slopes requiring butfress fills are presented in
Appendix E.
7.9.5 It is recommended that all cut slopes be observed during grading by an engineering
geologist to verify that the soil and geologic conditions do not differ significantiy from
those anticipated and to determine if adverse bedding, firactures or joints exist. Remedial
grading procedures can be recommended should adverse geologic conditions be observed.
7.9.6 The outer 15 feet of fill slopes, measured horizontal to the slope face, should be composed
of properly compacted "granular soil" fill to reduce the potential for surficial sloughing.
7.9.7 All fill slopes should be overbuilt at least 3 feet horizontally, and cut to the design finish
grade. As an altemative, fill slopes may be compacted by back-rolling at vertical intervals
not to exceed 4 feet and then track-walking with a D-8 dozer, or equivalent, upon
completion such that the fill soils are uniformly compacted to at least 90 percent relative
compaction to the face of the finished slope.
7.9.8 All slopes should be planted, drained and properly maintained to reduce erosion.
7.10 Foundation Recommendations
7.10.1 The following foundation recommendations are for one-and/or two-story stmctures and are
based upon the assumption tiiat the soil conditions within 4 feet of finish pad subgrade
Project No. 06403-12-01 - 19 - March 24,2000
consist of granular "low" expansive soil (Expansion Index less tiian 50). The
recommendations are separated into categories dependent upon the depth and geometry of
fill underlying a particular building pad and/or lot. Final foundation design
recommendations for each building will be presented in the final compaction report after
the grading for the individual building pads has been completed.
7.10.2 Foundations for either Category I, EI, or HI may be designed for an allowable soil bearing
pressure of 2,000 pounds per square foot (psf) (dead plus live load). This bearing pressure
may be increased by one-third for transient loads such as wind or seismic forces.
TABLE 7.10.1
FOUNDATION RECOMMENDATIONS BY CATEGORY
Foundation
Category
Minimum
Footing Depth
(inches)
Continuous Footing
Reinforcement
Interior Slab
Reinforcement
I 12 One No. 4 bar top and bottom 6 X 6 - 10/10 welded wire
mesh at slab mid-point
n 18 Two No. 4 bars top and bottom No. 3 bars at 24 inches on
center, both directions
m 24 Two No. 5 bars top and bottom No. 3 bars at 18 inches on
center, bodi directions
CATEGORY CRTTERLV.
Category I: Maximum fiU thickness is less than 20 feet and Expansion Index is less than or
equal to 50.
Category U: Maximum fiU thickness is less than 50 feet and Expansion Index is less than or
equal to 90, or variation in fiU thickness is between 10 feet and 20 feet
Category IU: FiU thickness exceeds 50 feet, or variation in fiU thickness exceeds 20 feet, or Expansion
Index exceeds 90, but is less than 130, or aUuvium left in place.
Notes:
1. AU footings should have a minimum width of 12 inches.
2. Footing depth is measured from lowest adjacent subgrade (including topsoil, if planned). These
depths apply to both exterior and interior footings..
3. AU interior Uving area concrete slabs should be at least 4 inches thick for Categories I and U and 5
inches diick for Category IH. This appUes to both bmlding and garage slabs-on-grade.
4. AU interior concrete slabs should be imderlain by at least 4 inches (3 inches for Category HI) of
clean sand or crushed rock.
5. AU slabs expected to receive moisture sensitive floor coverings or used to store moisture sensitive
materials should be underlain by a vapor barrier covered with at least 2 inches of the clean sand
recommended in No. 4 above.
ProjectNo. 06403-12-01 -20-March 24, 2000
7.10.3 The use of isolated footings which are located beyond the perimeter of tiie building and
support stmctural elements connected to the building is not recommended for Category HI.
Where tins condition cannot be avoided, tiie isolated footings should be connected to tiie
building foundation system with grade beams.
7.10.4 For Foundation Category m, the structural slab design should consider using interior
stiffening beams and connecting isolated footings and/or increasing the slab thickness. In
addition, consideration should be given to connecting patio slabs, which exceed 5 feet in
width, to the building foundation to reduce the potential for future separation to occur.
7.10.5 No special subgrade preparation is deemed necessary prior to placing concrete, however,
the exposed foundation and slab subgrade soils should be sprinkled, as necessary, to
maintain a moist soil condition as would be expected in any such concrete placement
However, where drying of subgrade soils has occurred, reconditioning of surficial soils will
be required. This recommendation applies to foundations as well as exterior concrete
flatwork.
7.10.6 Where buildings or other improvements are planned near the top of a slope steeper than 3:1
(horizontal:vertical), special foundations and/or design considerations are recommended
due to the tendency for lateral soil movement to occur.
• For fill slopes less tiian 20 feet high, building and wall footings should be deepened
such that tiie bottom outside edge oftiie footing is at least 7 feet horizontally from
the face ofthe slope.
• Where the height oftiie fill slope exceeds 20 feet, the minimum horizontal distance
should be increased to H/3 (where H equals tiie vertical distance from tiie top oftiie
slope to tiie toe) but need not exceed 40 feet. For composite (fill over cut) slopes, H
equals the vertical distance from the top of the slope to the bottom of the fill
portion ofthe slope. An acceptable altemative to deepening the footings would be
tiie use of a post-tensioned slab and foundation system or increased footing and
slab reinforcement Specific design parameters or recommendations for either of
these altematives can be provided once the building location and fill slope
geometry have been determined.
• For cut slopes in dense formational materials, or fill slopes inclined at 3:1 (hori-
zontal:vertical) or flatter, the bottom outside edge of building and wall footings
should be at least 7 feet horizontally from tiie face ofthe slope, regardless of slope
height.
• Swimming pools located witiiin 7 feet of tiie top of cut or fill slopes are not
recommended. Where such a condition cannot be avoided, it is recommended that
the portion of the swimming pool wall within 7 feet of the slope face be designed
assuming that the adjacent soil provides no lateral support. This recommendation
applies to fill slopes up to 30 feet in height, and cut slopes regardless of height. For
Project No. 06403-12-01 - 21 - March 24,2000
swimming pools located near tiie top of fill slopes greater tiian 30 feet in height,
additional recommendations may be required and Geocon Incorporated should be
contacted for a review of specific site conditions.
• Although other improvements which are relatively rigid or brittie, such as concrete
flatwork or masonry walls may experience some disfress if located near the top ofa
slope, it is generdly not economical to mitigate this potential. It may be possible,
however, to incorporate design measures which would permit some lateral soil
movement without causing extensive disfress. Geocon Incorporated should be
consulted for specific recommendations.
7.10,7 As an altemative to the foundation recommendations for each category, consideration
should be given to tiie use of post-tensioned concrete slab and foundation systems for flie
support of tile proposed stiructures. The post-tensioned systems should be designed by a
stmctural engineer experienced in post-tensioned slab design and design criteria of the
Post-Tensioning Institute (UBC Section 1816). Although this procedure was developed for
expansive soils, it is understood that it can also be used to reduce the potential for
foundation disfress due to differential fill settiement. The post-tensioned design should
incorporate the geotechnical parameters presented on the following table entitied Post-
Tensioned Foundation System Design Parameters for the particular Foundation Category
designated.
TABLE 7.10.2
POST-TENSIONED FOUNDATION SYSTEM DESIGN PARAMETERS
Post-Tensioning Institute (PTI)
Design Parameters
Foundation Category Post-Tensioning Institute (PTI)
Design Parameters I n m
1. Thomthwaite Index -20 -20 -20
2. Clay Type - Montmorillonite Yes Yes Yes
3. Clay Portion (Maximum) 30% 50% 70%
4. Depth to Constant SoU Suction 7.0 ft. 7.0 ft. 7.0 ft
5. SoU Suction 3.6 ft. 3.6 ft. 3.6 ft.
6. Moisture Velocity 0.7 in./mo. 0.7 in./mo. 0.7 inVmo.
7. Edge Lift Moisture Variation Distance 2.6 ft. 2.6 ft. 2.6 ft.
8. Edge Lift 0.41 in. 0.78 in. 1.15 in.
9. Center Lift Moisture Variation Distance 5.3 ft 5.3 ft. 5.3 ft.
10. Center Lift 2.12 in. 3.21 in. 4.74 in.
7.10.8 UBC Section 1816 uses interior stiffener beams in its stmctural design procedures. If tiie
stmctural engineer proposes a post-tensioned foundation design method other than UBC
Section 1816, it is recommended tiiat interior stiffener beams be used for Foundation
Categories n and HI. The depth of tiie perimeter foundation should be at least 12 inches for
Project No. 06403-12-01 •22-March 24, 2000
Foundation Category I. Where the Expansion Index for a particular building pad exceeds
50 but is less tiian 91, the perimeter footing depth should be at least 18 inches; and where it
exceeds 90 but is less tiian 130, the perimeter footing depth should be at least 24 inches.
Geocon Incorporated should be consulted to provide additional design parameters as
required by the stmctural engineer.
7.10.9 The recommendations of this report are intended to reduce the potential for cracking of
slabs due to expansive soils (if present), differential settlement of deep fills or fills of
varying thicknesses. However, even with the incorporation of tiie recommendations
presented herein, foundations, stucco walls, and slabs-on-grade placed on such conditions
may still exhibit some cracking due to soil movement and/or shrinkage. The occurrence of
concrete shrinkage cracks is independent of the supporting soil characteristics. Their
occuirence may be reduced and/or confrolled by limiting the slump of the concrete, proper
concrete placement and curing, and by tiie placement of crack confrol joints at periodic
intervals, in particular, where re-entry slab comers occur.
7.11 Retaining Walls and Lateral Loads
7.11.1 Retaining walls not restrained at tiie top and having a level backfill surface should be
designed for an active soil pressure equivalent to the pressure exerted by a fluid density
of 30 pounds per cubic foot (pcf). Where the backfill will be inclined at no steeper tiian 2.0
to 1.0, an active soil pressure of 40 pcf is recommended. These soil pressures assume that
the backfill materials within an area bounded by tiie wall and a 1:1 plane extending upward
from the base of the wall possess an Expansion Index of less than 50. For those lots with
finish grade soils having an Expansion Index greater than 50 and/or where backfill
materials do not conform to the above criteria, Geocon Incorporated should be consulted
for additional recommendations.
7.11.2 Unrestrained walls are those that are allowed to rotate more than O.OOIH at the top of the
wall. Where walls are restrained from movement at the top, an additional uniform pressure
of 7H psf (where H equals the height of the retaining wall portion of the wall in feet)
should be added to the above active soil pressure,
7.11.3 All retaining walls should be provided with a drainage system adequate to prevent the
buildup of hydrostatic forces and should be waterproofed as required by the project
architect. The use of drainage openings through the base of the wall (weep holes, etc.) is
not recommended where tiie seepage could be a nuisance or otherwise adversely impact the
property adjacent to the base of the wall. The above recommendations assume a properly
compacted granular (Expansion Index less than 50) backfill material with no hydrostatic
Project No. 06403-12-01 - 23 - March 24, 2000
forces or imposed surcharge load. If conditions different than those described are
anticipated, or if specific drainage details are desired, Geocon Incorporated should be
contacted for additional recommendations.
7.11.4 In general, wall foundations having a minimum depth and width of one foot may be
designed for an allowable soil bearing pressure of 2,000 psf, provided the soil witiiin 3 feet
below the base of the wall has an Expansion Index of less than 90. The proximity of the
foundation to the top of a slope steeper tiian 3:1 could impact the allowable soil bearing
pressure. Therefore, Geocon Incorporated should be consulted where such a condition is
anticipated. The location of wall footings, however, should comply with the
recommendations presented in Section 7.10.6.
7.11.5 For resistance to lateral loads, an allowable passive earth pressure equivalent to a fluid
densify of 300 pcf is recommended for footings or shear keys poured neat against properly
compacted granular fill soils or undisturbed natural soils. The allowable passive pressure
assumes a horizontal surface extending at least 5 feet or three times the surface generating
the passive pressure, whichever is greater. The upper 12 inches of material not protected by
floor slabs or pavement should not be included in the design for lateral resistance. An
allowable fiiction coefficient of 0.4 may be used for resistance to sliding between soil and
concrete. This fiiction coefficient may be combined with the allowable passive earth
pressure when determining resistance to lateral loads.
7.11.6 The recoinmendations presented above are generally applicable to the design of rigid
concrete or masoniy retaining walls having a maximum height of 8 feet In the event tiiat
walls higher than 8 feet or other types of walls are planned, such as crib-type walls, Geocon
Incorporated should be consulted for additional recommendations.
7.12 Slope Maintenance
7.12.1 Slopes that are steeper than 3:1 (horizontal:vertical) may, under conditions which are both
difficult to prevent and predict, be susceptible to near surface (surficial) slope instability.
The instability is tj^iically limited to the outer three feet of a portion of the slope and
usually does not directly impact the improvements on the pad areas above or below the
slope. The occurrence of surficial instability is more prevalent on fill slopes and is
generally preceded by a period of heavy rainfall, excessive inigation, or the migration of
subsurface seepage. The disturbance and/or loosening of the surficial soils, as might result
from root growth, soil expansion, or excavation for iirigation lines and slope planting, may
also be a significant contributing factor to surficial instability. It is, therefore, recom-
mended that to the maximum extent practical: (a) disturbed/loosened surficial soils be
Project No. 06403-12-01 - 24 - March 24, 2000
eitiier removed or properly recompacted, (b) irrigation systems be periodically inspected
and maintained to eliminate leaks and excessive irrigation, and (c) surface drains on and
adjacent to slopes be periodically maintained to preclude ponding or erosion. It should be
noted that although the incoiporation of the above recommendations should reduce tiie
potential for surficial slope instability, it will not eliminate the possibility, and, therefore, it
may be necessary to rebuild or repair a portion of the project's slopes in the future.
7.13 Drainage
7.13.1 Establishing proper drainage is imperative to reduce the potential for differential soil
movement, erosion and subsurface seepage. Positive measures should be taken to properly
fmish grade the building pads after stmctures and other improvements are in place, so that
drainage water from the building pads and adjacent properties is directed to sfreets away
from foundations and tops of slopes. Experience has shown that even with these provisions,
a shallow groundwater or subsurface condition can and may develop in areas where no
such condition existed prior to site development This is particularly true where a
substantial increase in surface water infiltration results from an increase in landscape
irrigation.
7.14 Grading Plan Review
7.14.1 The geotechnical engineer and engineering geologist should review the grading plans prior
to finalization to verify their compliance with the recommendations of this report and
determine the necessity for additional comments, recommendations and/or analysis.
Project No. 06403-12-01 - 25 - March 24, 2000
LIMITATIONS AND UNIFORMITY OF CONDITIONS
1. The recommendations of this report pertain only to the site investigated and are based upon
the assumption that the soil conditions do not deviate from those disclosed in the
investigation. If any variations or undesirable conditions are encountered during constmction,
or if the proposed consfruction will differ from that anticipated herein, Geocon Incorporated
should be notified so that supplemental recommendations can be given. The evaluation or
identification of the potential presence of hazardous or corrosive materials was not part of the
scope of services provided by Geocon Incorporated.
2. This report is issued with the understanding that it is the responsibility of the owner, or of his
representative, to ensure that the infoimation and recommendations contained herein are
brought to the attention of the architect and engineer for the project and incorporated into the
plans, and the necessary steps are taken to see that the confractor and subconfractors carry out
such recommendations in the field.
3. The findings of this report are valid as of the present date. However, changes in the
conditions of a property can occur with the passage of time, whether they be due to natural
processes or the works of man on this or adjacent properties. In addition, changes in
applicable or appropriate standards may occur, whether they result from legislation or the
broadening of knowledge. Accordingly, tiie findings of this report may be invalidated wholly
or partially by changes outside our confrol. Therefore, this report is subject to review and
should not be relied upon after a period ofthree years.
Project No. 06403-12-01 March 24, 2000
SOURCE: 2000 THOMAS BROTHERS MAP
SAN DIEGO COUNTY, CALIFORNIA
PKPROOUCED WITH PERMISSK3N GRANTED BY THOMAS BROTHERS MAPS.
4^£.- .COPYRIGHTEO BY THOMAS BROS, MAPS, IT IS UNLAWFUL TO COPY
S^SJ£'ST*'^ESS41SN''*'" "^"^ °^
4
NO SCALE
GEOCON
INCORPORATED
GEOTECHNICAL CONSULTANTS
6960 FUNDERS DRIVE - SAN DIEGO, CALIFORNIA 92121-2974
PHONE 858 558-6900 - FAX 858 558-6159
AS/TA
IVICMAP
DSK/EOOOD
VICINITY AMP
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
DATE 03-24-2000 PROJECT NO. 06403-12-01 FIG.1
APPROVED FILTER FABRIC
6" DIA. PERFORATED
SUBDRAIN PIPE
1" MAX. OPEN-GRADED
AGGREGATE 9 CUBIC FT/FT
MINIMUM
NOTES:
1 SUBDRAIN PIPE SHOULD BE 6-INCH MINIMUM DIAMETER, PERFORATED THICK
WALLED SCHEDULE 40 PVC. SLOPED TO DRAIN AT 1 PERCENT MINIMUM AND
CONNECTED TO STORM DR/MN SYSTEM OR APPROVED OUTLET.
2.....WHERE DRAIN EXCEEDS 500 FEET, PIPE DIAMETER SHOULD BE INCREASED TO 8 INCHES
3 FILTER FABRIC TO BE MIRAFI 140N OR EQUIVALENT
NO SCALE
TYPICAL SUBDRAIN DETAIL
GEOCON ^
INCORPORATED ^^ST
GEOTECHNICAL CONSULTANTS
6960 FLANDERS DRIVE - SAN DIEGO, CALIFORNIA 92121-2974
PHONE 619 558-6900 - FAX 619 558-6159
VILL\GES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
AS/AML DSK/EOOOO DATE 03-24-2000 PROJECT NO. 06403 -12 - 01 FIG. 6
EXISTING GROUND SURFACE
NO SCALE
NOTES:
1 EXCAVATE BACKCUT AT 1:1 INCLINATION SUCH THAT THE KEY WIDTH AT FINISHED PAD GRADE
IS AS SPECIFIED BY THE SOIL ENGINEER
Z BASE OF BUTTRESS FILL TO BE 5 FEET (OR AS DETERMINED BY SOIL ENGINEER) BELOW ADJACENT PAD
GRADE SLOPING A MINIMUM 2% INTO SLOPE
3 BUTTRESS FILL TO BE COMPOSED OF PROPERLY COMPACTED GRANULAR SOIL WITH MINIMUM
SHEAR STRENGTH PARAMETERS OF (t>=25°, C=300psf
4......WHERE SEEPAGE IS ENCOUNTERED IN BACKCUT, CHIMNEY DRAINS TO BE APPROVED PREFABRICATED
CHIMNEY DRAINS PANELS (MIRADRAIN, TENSAR. OR EQUIVALENT) SPACED APPROXIMATELY 30 FEET
CENTER TO CENTER. ADOmONAL DRAINS WILL BE REQUIRED WHERE AREAS OF SEEPAGE ARE ENCOUNTERED.
S.....FILTER MATERIAL TO BE l-INCH. OPEN-GRADED CRUSHED ROCK ENCLOSED IN APPROVED FILTER FABRIC
(MIRAFI 140N OR EQUIVALENT).
6 COLLECTOR PIPE TO BE 4-INCH MINIMUM DIAMETER. PERFORATED. THICK-WALLED PVC SCHEDULE 40 OR
EQUIVALENT AND SLOPED TG DRAIN AT 1 PERCENT MINIMUM TO APPROVED OUTLET
TYPICAL BUHRESS DETAIL
GEOCON
INCORPORATED O
GEOTECHNICAL CONSULTANTS
6960 FLANDERS DRIVE - SAN DIEGO, CALIFORNIA 92121-2974
PHONE 619 558-6900 - FAX 619 558-6159
DFL/RSS REV/DFL
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
DATE 03-24 - 2000 PROJECT NO. 06403 -12 - 01 FIG 7
BUTFI12 IX-IXVIIimSS
EXISTING GROUND SURFACE
FINISHED SLOPE
__ UNDISTURBED
FORMATIONAL
NO SCALE
NOTES:
1 BASE OF STABILITY FILL TO BE 3 FEET INTO DENSE, FORMATIONAL SOILS SLOPING
A MINIMUM S% INTO SLOPE
Z...JAPPROVED PREFABRICATED CHIMNEY DRAIN PANELS (MIRADRAIN, TENSAR.
OR EQUIVALENT) SPACED APPROXIMATELY 30 FEET CENTER TO CENTER.
3 FILTER MATERIAL TO BE 1-INCH. OPEN-GRADED CRUSHED ROCK ENCLOSED IN APPROVED FILTER FABRIC
4 COLLECTOR PIPE TO BE 4-INCH MINIMUM DIAMETER. PERFORATED, THICK-WALLED PVC SDR 21 OR
EQUIVALENT AND SLOPED TO DRAIN AT 1 PERCENT MINIMUM TO APPROVED OUTLET
TYPICAL STABILITY FILL DETAIL
GEOCON
INCORPORATED
GEOTECHNICAL CONSULTANTS
6960 FLANDERS DRIVE - SAN DIEGO, CALIFORNIA 92121-2974
PHONE 619 558-6900 - FAX 619 558-6159
AS /AML DSK/GTYPl
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
DATE 03 - 24 - 2000 PROJECT NO.06403-12 - 01 FIGS
STABFIL IV/IXVIIRSS
PROJECTNO. 06403-12-01
ASSUMED CONDITIONS:
Slope Height
Slope Inclination
Total Unit Weight of SoQ
Angle of Intemal Friction
Apparent Cohesion
No Seepage Forces
ANALYSIS:
H = 100 feet
2:1 (Horizontahvertical)
Yt = 130 pounds per cubic foot
(|) = 30 degrees
C = 500 pounds per square foot
Acij, = yHtand c > Equation (3-3), Reference 1
FS = NcfC Equation (3-2), Reference 1
yH
Ac], = 15 Calculated Using Eq. (3-3)
Ncf = 47 Detennined Using Figure 10, Reference 2
FS = 1.8 Factor of Safety Calculated Using Eq. (3-2)
REFERENCES:
(1) Janbu, N., Stability Analysis of Slopes with Dimensionless Parameters, Harvard SoU Mechanics,
Series No. 46, 1954.
(2) Janbu, N., Discussion of J. M. BeU, Dimensionless Parameters for Homogeneous Earth Slopes,
Joumal of SoU Mechanics and Foundation Design, No. SM6, November 1967.
CUT SLOPE STABILITY ANALYSIS
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
FIGURE 9
PROJECTNO. 06403-12-01
ASSUMED CONDITIONS:
Slope Height
Slope Inclination
Total Unit Weight of SoU
Angle of Internal Friction
Apparent Cohesion
No Seepage Forces
ANALYSIS:
H = 50 feet
2:1 (Horizontal :Vertical)
Yt = 130 pounds per cubic foot
(|) = 25 degrees
C = 300 pounds per square foot
Aoj) = yHtanA r-Equation (3-3), Reference 1
FS = NcfC Equation (3-2), Reference 1
yH
Ac(^ = 10 Calculated Using Eq. (3-3)
Ncf = 34 Detennined Using Figure 10, Reference 2
FS = 1.56 Factor of Safety Calculated Using Eq. (3-2)
REFERENCES:
(1) Janbu, N., Stability Analysis of Slopes with Dimensionless Parameters, Harvard Soil Mechanics,
Series No. 46, 1954.
(2) Janbu, N., Discussion of J. M. Bell, Dimensionless Parameters for Homogeneous Earth Slopes,
Joumal of SoU Mechanics and Foundation Design, No. SM6, November 1967.
FILL SLOPE STABILITY ANALYSIS
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
FIGURE 10
PROJECTNO. 06403-12-01
ASSUMED CONDITIONS:
Slope Height H = Infinite
Depth of Saturation Z. = 3 feet
Slope Inclination 2:1 (Horizontal :Vertical)
Slope Angle i = 26.5 degrees
Unit Weight of Water Yw = 62.4 pounds per cubic foot
Total Unit Weight of SoU Yt = 130 pounds per cubic foot
Angle of Intemal Friction <l> = 25 degrees
Apparent Cohesion C = 300 pounds per square foot
Slope saturated to vertical depth Z below slope face.
Seepage forces paraUel to slope face
ANALYSIS:
FS = C + {y,-Y^)Zcoshtan(i>
Y ^Zsmicosi = 2,4
REFERENCES:
(1) HaefeU, R, The Stability of Slopes Acted Upon by Parallel Seepage, Proc. Second Intemational
Conference, SMFE, Rotterdam, 1948, 1, 57-62.
(2) Skempton, A. W., and F. A. Delory, Stability of Natural Slopes in London Clay, Proc. Fourth
Intemational Conference, SMFE, London, 1957, 2,378-81.
SURFICIAL SLOPE STABILITY ANALYSIS
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
FIGURE 11
APPENDIXA
FIELD INVESTIGATION
The field investigation was performed during the period of November 4 through December 1, 1999,
and consisted of the excavation of 19 large-diamet^ borings, 11 small-diameter borings, 17 "air-
frack" drill holes and 113 exploratory frenches. The approximate locations of borings and frenches are
shown on Figure 2.
The smaU-diameter borings were advanced to deptiis ranging from 26 to 51 feet below grade using an
Ingersol Rand A-300 truck-mounted drill rig equipped with an 8-inch hollow-stem auger. Relatively
undisturbed samples wee obtained by driving a 3-inch split tube sampler 12 inches into the
undisturbed soil mass with a 140-pound hammer falling 30 inches. The sampler was equipped with 1-
inch by IVs-inch brass sampler rings to facilitate removal and laboratory testing. Standard Penefration
Tests (SPT) were also performed at selected intervals. SPT samples were obtained by driving a 2-inch
split-tube sampler into the "undisturbed" soil mass with blows from a 140-pound hammer falling 30
inches.
The large-diameter borings were advanced to depths ranging from 25 to 101 feet below existing
grade using an E-120 truck-mounted drill rig equipped with a 30-inch split-tube sampler 12 inches
into the "undisturbed" soil mass with the drill rig Kelly bar. The sampler was equipped with 1-inch-
high by 2V8-inch diameter brass sampler rings to facilitate removal, and laboratory testing. Bulk
samples were also obtained.
An IngersoU-Rand 500 pneumatic percussion, 4-inch-diameter drill with hydraulic pulldown was
used for air-frack holes at selected locations. A graphical representation of each of the air-track
borings is presented on Figure A-169 through A-185. The graphs depict tiie rate (in seconds per foot)
at which the drill penetrated each foot of depth examined.
The backhoe trenches were excavated to depths 35 to 18 feet using a JD 555 trackhoe-equipped with
a 24-inch-wide bucket. Disturbed bulk and chunk samples were obtained at selected locations in the
frenches.
The soils encountered in the borings and backhoe frenches were visually examined, classified, and
logged. Logs of tiie borings and backhoe frenches and plots of tiie cone penefrometer soundings are
presented on Figures A<-1 through A-168. The logs depict the soil and geologic conditions
encountered and the depth at which samples were obtained.
Project No. 06403-12-01 March 24, 2000
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
5-
o -i o X 1-H
SOIL
CLASS
(USCS)
BORING LB 1
ELEV. (MSL.) 240
EQUIPMENT
.DATE COMPLETED
BUCKET AUGER
11/4/99 \
OS
iii;5
u
- 0 MATERLAL DESCRIPTION
- 2 -
- 4
- 6 -
- 8 -
- 10 -
12 -
14 -
16 -
18 -
20 -
LBl-1
LBl-2
LBl-3
'.Kyi-m m
* •
w
m m
•.r.l.*).'
m
A-yy.
Alyl
A'l'y .>•]•.[,
FILL
SM
\ Loose, humid, dark brown, very Sandy CLAY
SANTIAGO FORMATION
Medium dense, dry, dark yeUowish-orange, SUty, fine
to coarse SANDSTONE, random, discontinuous,
caliche fUled joints
-Fault: N55W. 54SW, .5" wide, caliche filled
-Possible "drag-stracture", (bedding folded mto
fault-plane suggesting reverse movement)
Bedding: NlOE, 15E; sUtstone 2" tiiick, abundant
caliche
-Undulatory contact
Stiff, dry, pale olive SILTSTONE interbed,
approximately 3' thick
5/12"
22 -
24 -
26 -
28 -
-Pinkish-gray below 13 feet
-Bedding: N40W, 21NE (cross bedding?), lenticular
bed less than 1' thick
-Bedding: N70E, 14SE: weU defmed sandstone beds
ap2^Tamstely 2" thick
Hard, moist, pale olive CLAYSTONE,
bentonitic/"so^y" texture, random, discontinuous,
wavy, stained, closed fractures, massive
6/12" 124.8 10.8
4/12" 112.2 20.2
Figure A-l, Log of Boring LB 1 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL c... STANDARD PENETRATION TEST 1 ... DRIVE SAMPLE (UNDISTURBED)
1 ^ ... DISTURBED OR BAG SAMPLE CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TREHCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> CS o _l o X I-H
SOIL
CUSS
(USCS)
BORING LB 1
ELEV. (MSL.) 240
EQUIPMENT
.DATE COMPLETED
BUCKET AUGER
11/4/99
ta Hi
go a|
u
- 90 MATERIAL DESCRIPTION
- 92 -
- 94 -
96
- 98
- 100
Joints: N20E, 55W, N55E, 40NW; discontinuous,
undulatory
-Slight seepage at 92 feet
VIL/CL
ML
CL
-Gradational lower contact
Hard SILTSTONE layer
-Gradational/bioturbated contact
Very hard, moist light olive gray, CLAYSTONE
-End visual log at 100 feet
BORING TERMINATED AT 101 FEET
I
Figure A-4, Log of Boring LB 1 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL c... STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED)
S ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE X . . UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TREHCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
5-
ts O _l o X I-H
SOIL
CUSS
(USCS)
BORING LB 2
ELEV. (MSL.) 210
EQUIPMENT
DATE COMPLETED 11/18/99
ROTARY BUCKET 30"
HS ili.
O
gd (li
- 0 MATERIAL DESCRIPTION
- 2 -
- 4 -
6 -
8 -
- 10 -
12
- 14 -
- 16 -
LB2-1
LB2-2
- 18 -
20 -
22 -
24 LB2-3
LB2-4
- 26 -
- 28 -
CL
CL
CL
SM
COLLUVIUM
Stiff, moist, dark gray-brown, Sandy CLAY
-Porous, with shrink crack l/4"-l" wide
-Very irregular, transitional contact
SANTIAGO FORMATION
Very stiff, moist, light olive, SUty CLAYSTONE
-Very weatiiered and firactured
-Becomes harder
-Becomes hard to very hard, moist, light olive, SUty
CLAYSTONE 8/11" 127.2 21.0
-Horizontal bedding^ contact
Dense to very dense, damp, light reddish-brown, very
SUty, coarse, SANDSTONE, with trace clay, massive
8/1 r 121.0 7.1
Figure A-5, Log of Boring LB 2 LCG
SAMPLE SYMBOLS ° "'" UNSUCCESSFUL
W ... DISTURBED OR BAG SAMPLE
1] ... STANDARD PENETRATION
EU ... CHUNK SAMPLE
TEST 1 .
f .
.. DRIVE SAMPLE (UNDISTURBED) |
.. WATER TABLE OR SEEPAGE ?
NOTE: THE LOG OF SUBSURFACE COND-ITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE 1
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
H
SOIL
CLASS
(USCS)
BORING LB 2
ELEV. (MSL.) 210
EQUIPMENT
DATE COMPLETED 11/18/99
ROTARY BUCKET 30"
Hyi-
u
30
32 -
34 -
54
LB2-5
40 -
42 -
44 -
46 -
48 -
50 -
52 -
CL
MATERIAL DESCRIPTION
-Inclmed depositional contact (N50E, 20S), witii fine
gravel layer at 30 feet
Hard, moist, oUve. SUty CLAYSTONE; fracmred,
massive
-Fracture; discontinuous, hairline at N-S, 70E, with
jarosite lining and some gypsum, and normal
slickenside-striations
-Mmor secondary fault
-Becomes harder, less fracmred, witii scattered
grit-size sand
20/10" 127.5 12.1
BORING TERMINATED AT 54 FEET
Figure A-6, Log of Boring, LB 2 LCG
SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL C.
S ... DISTURBED OR BAG SAMPLE B ..
STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
CHUNK SAMPLE I ... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIOHS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
SOIL
CUSS
(USCS)
BORING LB 3
ELEV. (MSL.) 235
EQUIPMENT
_DATE COMPLETED 11/18/99
ROTARY BUCKET 30"
JUI'
- CO
UJ
iUJ;
UJ
a u
uj^5
•o
u
MATERLAL DESCRIPTION
2 -
4 -
LB3-1
6 -
8 -
10 -LB3-2
LB3-3
- 12 -
- 14 -
16
18
20 LB3-4
LB3-5
22 -
24 -
26 -
- 28 -
CL
SM
CL
TOPSOIL
Stiff, moist, dark gray-brown. Sandy CLAY
SANTIAGO FORMATION
Dense, damp, light brown to tan, SUty, fine
SANDSTONE, with ttace clay
-6" claystone layer; horizontal
-Irregular, near-horizontal, depositional contact, (with
fine gravel, coarse sand)
Very stiff to hard, moist, light olive, Silty
CLAYSTONE
-Very fractured, weathered
-Beddmg plane shear, horizontal, -1/4-1/2" tiiick,
with gypsum liner, diroughgoing, plastic, wet
-Bedding plane shear, very irregular, l/4"-l/2" thick
with gypsum, approximately southward dip,
throughgoing, plastic, wet, with some sand
-Becomes less weathered and fracmred
-Remolded clay seam, N60W, 30NE; l/16"-l/8" tiiick,
throughgoing, plastic and wet; approximately 4"-6"
thick zone of vety fractured wallrock on either side
-Joint/fault (?), N30W, 30NE: 1/2"-!" tiiick.
throughgoing, widi wet, plastic and jarosite/gypsum
116.1 17.4
Figure A-7, Log of Boring LB 3 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL C ...
^ ... DISTURBED OR BAG SAMPLE B ...
STANDARD PENETRATION TEST
CHUNK SAMPLE
.. DRIVE SAMPLE (UNDISTURBED)
.. UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENC" LOtrATION AND AT T^^^^
DATE INDICATED. IT IS HOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
BORING LB 3
ELEV. (MSL.) 235
EQUIPMENT
.DATE COMPLETED 11/18/99
ROTARY BUCKET 30"
ll
H-l <E Oi h-Ul
z HI Q.
go
a
UJ
iz -o u
MATERL\L DESCRIPTION
linings (orange to brown)
Hard, moist, olive to brown, SUty CLAYSTONE
-Fractured, massive
. _"Near-horizontal contact
Dense, damp, light brown to orange, SUty, fine
\ SANDSTONE
BORING TERMINATED AT 35 FEET
108.0 21.9
Figure A-8, Log of Boring LB 3 LCG
! SAMPLESYMBOLS • ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
@ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE X ... UATER TABLE OR SEEPAGE
.nt uuu ur auoauKr«i,c OUNUIUUNS :>I1UMN HERtUN APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SOIL
CUSS
(USCS)
BORING LB 4
ELEV. (MSL.) 145
EQUIPMENT
DATE COMPLETED 11/19/99
ROTARY BUCKET 30"
UJ,
Ul
ag gz u
- 0 MATERL\L DESCRIPTION
- 2 -
- 4 -
6
8
10
12 -
14 -
16 -
18
20 -
I- 22 -
24 -
26 -
28
CL COLLUVIUM
Stiff, humid, dark gray-brown, Sandy CLAY
TERRACE DEPOSIT
Medium dense to dense, damp, light brown-olive,
with reddish-brown mottiing. Clayey, fine SAND
LB4-1 SC
CUML
Very stiff to medium dense, damp, light brown-olive,
very SUty CLAY to Clayey SILT, with some sand,
with white mottiing of calcium sulfate (gypsum)
-Becomes more sandy
-IrregiUar bedding^ contact; j^OE, 15N
Dense, damp, light brown-tan, SUty, fine SAND
SM
JM-GM
LB4-4 CL
-2" thick, horizontal grit-size sand layer (angular
volcanic grit)
-Near-horizontal transitional contact
Very dense, damp, reddish-brown. Gravelly, medium
to coarse SAND, with angular, fine volcanic
GRAVEL
-Irregular deposition contact, near-horizontal; burrows
into imit below
SANTL\GO FORMATION
Very stiff to hard, moist, olive, Silty CLAYSTONE
-Vety fracmred, with discontinuous clay seam,
calcium sulfate (gypsum) Imings on fractures
-Becomes less ftacmred
BORING TERMINATED AT 30 FEET
124.4 8.9
8/10" 122.1 9.8
120.2 14.5
Figure A-9, Log of Boring LB 4 LCG
SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST 1 ... DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE T. ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
H
SOIL
CUSS
(USCS)
BORING LB 5
ELEV. (MSL.) 165
EQUIPMENT
DATE COMPLETED 11/19/99
ROTARY BUCKET 30"
111 ^
IN go* a| gg
- 0 MATERL\L DESCRIPTION
- 2 -
- 4 -
- 6 -
- 8 -
- 10 -
- 12 -
- 14 -
16 -
- 18 -
- 20 -
- 22 -
r
- 24
- 26
- 28 -
SM
SM
ML
CL
TOPSOIL
Loose, dty, dark gray, SUty, fine SAND
-Porous
-Becomes medium to coarse-grained
-Cross-bedding inclined 15-20 degrees northward
-Horizontal bedding
Dense, damp, light reddish-brown, SUty, coarse
SANDSTONE
-Becomes graveUy and very moist
-Irregular, mterfmgering contact, approximately
horizontal
Hard, moist, blue-gray to olive, Sandy SILTSTONE,
with some clay
-Interfingering, transitional contact; approximately
horizontal
Hard, moist, dark olive, Silty ClAYSTONE
-Very fractured, with discontinuous clay seams
SANTIAGO FORMATION
Dense, humid, light tan, SUty, fine SANDSTONE
8/11" 125.8 11.9
8/10"
10 117.2 16.7
Figure A-10, Log of Boring LB 5 LCG
1 SAMPLESYMBOLS • ... SAMPLING UNSUCCESSFUL E... STANDARD PENETRATION TEST 1 ... DRIVE SAMPLE (UNDISTURBED) 1 SAMPLESYMBOLS
@ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
SOIL
CUSS
(USCS)
BORING LB 5
ELEV. (MSL.) 165
EQUIPMENT
_DATE COMPLETED 11/19/99
ROTARY BUCKET 30" UJ;
ci
Ul,
ag
o^ =o u MATERLAL DESCRIPTION
30
32
34 -
-Scattered subangiUar volcanic clasts
CL
BORING TERMINATED AT 35 FEET
i
Figure A-ll, Log of Boring LB 5 LCG
T- r,,^ ,rT,«r o ^ ... SAMPLING UNSUCCESSFUL SAMPLE SYMBOLS ^
^ ... DISTURBED OR BAG SAMPLE
c.
B.
. STANDARD PENETRATION TEST • ... ORIVE SAMPLE (UNDISTURBED) |
. CHUNK SAMPLE I ... WATER TABLE OR SEEPAGE '
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. I
I
PROJECT NO. 06403-12-01
BORING LB 6
ELEV. (MSL.) 260
EQUIPMENT
.DATE COMPLETED 11/19/99
ROTARY BUCKET 30"
u z
<E
«nO UJ _
Z^
go
a
ag
gz
u
MATERIAL DESCRIPTION
TOPSOIL
Loose, dty, dark gray-brown, very Clayey, Gravelly
SAND, with angular volcanic clasts
SANTIAGO FORMATION
Medium dense, damp, light brown. Clayey, Sandy
SILTSTONE
-Highly weathered
-Horizontal beds
Dense, damp, reddish-brown, SUty, medium
SANDSTONE, wifli some clay
Very stiff, moist, light olive, Qayey SILTSTONE
-Gypsum
-Horizontal contact
Dense, damp, reddish-brown, Sifty, fine SAND, with
some clay
-12" cemented fossUiferous layer
-Bedding plane shear at 19.5 feet, l/8"-l/4" tiiick,
horizontal, discontinuous
-Clay seam (not remolded) N-S, 5W ^proximately
1-2" thick, very moist, bentonitic?
-Becomes light olive to brown
120.0 12.1
5/9"
11 122.1 13.1
igure A-12, Log of Boring LB 6 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST
§ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE
• ... DRIVE SAMPLE (UNDISTURBED)
Z ... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
BORING LB 6
ELEV, (MSL.) 260
EQUIPMENT
_DATE COMPLETED
ROTARY BUCKET 30"
11/19/99
ujUo
zf2_j
UJ^CQ
go
UJ OC
I-
UJ
>^ •o u
MATERIAL DESCRIPTION
Dense, moist, light olive. Clayey SILTSTONE
Hard, moist, oUve to gray, Sandy CLAYSTONE, with
some sUt 20
Dense, moist, light olive-brown, very Silty, fine
SANDSTONE to Sandy SILTSTONE
BORING TERMINATED AT 41 FEET
Figure A-13, Log of Boring LB 6 LCG
SAMPLE SYMBOLS n... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE I . . WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES OHLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
BORING LB 7
ELEV. (MSL.) 220
EQUIPMENT
DATE COMPLETED 11/22/99
ROTARY BUCKET 30"
5UI'
HS
:m
UJ; Q.«>^
z^ gd
hi Qi-
in
u
MATERIAL DESCRIPTION
TOPSOIL
Stiff, humid, dark brown, very Sandy CLAY
SANTIAGO FORMATION
Dense, damp, li^l raidish-brown, Silty
SANDSTONE, with some clay, weathered
-Becomes dark red-brown
-1" thick clay scam (not remolded), N-S, 5'W
-Near-horizontal d^sition-contact
Hard, moist, light olive, very SUty CLAYSTONE to
Clayey SILTSTONE
117.8 7.6
-Becomes sandy
-Joint, fracture, wifli 1/4" fliick clay seam, N30E,
30NW
-Discontinuous clay seams, E-W, 30S (very fractured
claystone with sand)
Hard, moist, medium olive-gray, SUty CLAYSTONE,
with discontinuous slickensided fractures, typically
random and steep
115.3 15.7
Figure A-14, Log of Boring LB 7 LCG
SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B
^ ... DISTURBED OR BAG SAMPLE B
.. STANDARD PENETRATION TEST DRIVE SAMPLE (UNDISTURBED)
.. CHUNK SAMPLE T. ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
BORING LB 7
ELEV. (MSL.) 220
EQUIPMENT
DATE COMPLETED 11/22/99
ROTARY BUCKET 30"
JUJ'
o.
UJ
§u^
gci
Q!^
UJ5
Qi^
Pi-
co LU HC gz
u
MATERL\L DESCRIPTION
Dense, damp, light olive, Sandy SILTSTONE, trace
clay
-Contact_N80E,_10S
Dense, damp, light tan, Silty, fine SANDSTONE
15
-Becomes reddish-brown (layers)
-Bedding plane shear, N70E, 5S; l/8"-r
_throu^gom^,_slickttBided^ wet
Hard, moist, light olive-birown, Sandy CLAYSTONE 114.6 18.6
Dense, damp, light brown-tan, vety SUty, fine
SANDSTONE, massive
-6" cemented layer; lenticular 20/7"
Hard, moist, olive, SUty, Sandy ClAYSTONE
40/9" 121.3 14.2
Figure A-15, Log of Boriiig LB 7 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST 1 ... DRIVE SAMPLE (UNDISTURBED)
§ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE X ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
o SOIL
CUSS
(USCS)
BORING LB 7
ELEV. (MSL.)
EQUIPMENT
220 .DATE COMPLETED 11/22/99
ROTARY BUCKET 30"
"a§
z«3
go ag gz
a
60 MATERIAL DESCRIPTION
-B7-13
BORING TERMINATED AT 61 FEET
Figure A-16, Log of Boring LB 7 LCG 1
SAMPLE SYMBOLS
• SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . .. ORIVE SAMPLE (UNDISTURBED)
@ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE . WATER TABLE OR SEEPAGE
n.x,. i.untmiu«a anuwN ncKCON wpnts ONLT AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
BORING LB 8
ELEV. (MSL.) 180
EQUIPMENT
_DATE COMPLETED
ROTARY BUCKET 30"
11/22/99
iUJ' an •
Hat-
iui;
zz
Qi^J
>-
gd
Qi^ a
Qi
Pu-
en Ul
-o u
MATERLAL DESCRIPTION
LANDSUDE DEBRIS
Stiff, humid, dark brown, vety Clayey SAND
Medium dense, damp, light brown, SUty, fine to
medium SAND, with some clay
Medium dense, moist, olive-brown. Clayey, fine
SAND
Medium dense, moist, light olive to red-brown, Sandy
CIAY, with scattered, subrounded to angular volcanic
gravel, (brecciated Santiago formation claystone)
-Remolded clay seam-contact at 19.2 feet at N70E,
12S, 1/4-1/2"^ wet.plastkandthrough
Medium dense, moist to very moist, reddish-brown,
very Clayey, coarse GRAVEL, with angular to
subrounded volcanic clasts; disturbed, non-imbricated
texmre (debris-flow?)
-Strong seepage at 25 feet
SANTL\GO PEAK VOLCANICS
Very weathered, fractured, light olive to
reddish-brown, weak VOLCANIC ROCK, widi
oversize floater boulders
BORING TERMINATED AT 27 FEET
REFUSAL
Figure A-17, Log of Boring LB 8 LCG
« . WT,, ,„^T n ... SAMPLING UNSUCCESSFUL SAMPLE SYMBOLS ^
^ ... DISTURBED OR BAG SAMPLE
B ... STANDARD PENETRATION TEST
B ... CHUNK SAMPLE
• ORIVE SAMPLE (UNDISTURBED) j
I ... WATER TABLE OR SEEPAGE |
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING-OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
H
SOIL
CUSS
(USCS)
BORING LB 9
ELEV. (MSL.) 140
EQUIPMENT
DATE COMPLETED 11/23/99
ROTARY BUCKET 30"
Ori •
^as
CO, u.
d
Qi^ a
uii> Qi
Ǥ
°z
u
- 0 MATERLU. DESCRIPTION
- 2 -
4 -
H 6
[
8 -i
LB9-1
LB9-2
t
L
14 -LB9-3
LB9-4
16 -
- 18 -
I-- 20 -
I
I
[
22
24 -
26 -
28 -
I-
SC-CL
GC
CL
CL-SC
GC-SC
FILL
Loose, dty to humid, medium olive-brown, vety
GraveUy, Clayey SAND
-Scattered 12" boulders, weeds
Loose, moist, reddish-brown, very Gravelly CLAY
Soft, moist, light to medium olive, SUty CLAY
-Sfrong organic odor
Soft, moist, dark brown-olive. Gravelly, Sandy CIAY
-Very strong orgaiuc odor
Loose, dry to humid, light reddish-brown, very
Gravelly, Clayey SAND, wifli rock > 10"
117.7 12.9
PUSH 115.1 16.8
Figure A-18, Log of Boring LB 9 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B
^ ... DISTURBED OR BAG SAMPLE B
.. STANDARD PENETRATION TEST •
.. CHUNK SAMPLE Z
.. DRIVE SAMPLE (UNDISTURBED)
.. WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
OEPTH
IN
FEET
SAMPLE
NO.
H
SOIL
CUSS
(USCS)
BORING LB 9
ELEV. (MSL.) 140
EQUIPMENT
DATE COMPLETED
ROTARY BUCKET 30"
11/23/99
o
H
<E
^2 Ul 3
tog
gu^
gci
5-5; Qi^
lU
•o
a
30
MATERLVL DESCRIPTION
- 32 -
- 34
36 -LB9-4
- 38 -
- 40
LB9-5
LB9-6
Loose, dty to humid, light reddish-brown, vety
GraveUy, Qayey SAND
GC-SC
SC
SANTIAGO FORMATION
Hard, moist, light olive to gray, Sandy ClAYSTONE,
massive
12 110.1 19.8
BORING TERMINATED AT 41 FEET
Figure A-19, Log of Boring LB 9 LCG
SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST a. . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS X . S ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE X . . WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC 80RING-0R TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
j OEPTH
I
FEET
SAMPLE
NO.
H
SOIL
CUSS
(USCS)
BORING LB 10
ELEV. (MSL.) 290
EQUIPMENT
DATE COMPLETED 11/23/99
ROTARY BUCKET 30"
SUJ'
LU =a-
iUJ; UJgffi
Z^
gci
oe. a
ui^
p
«g
gz
u
MATERIAL DESCRIPTION
•2 -
SC-CL TOPSOIL
Loose, dry to humid, dark gray-brown, very Clayey,
fme SAND
SANTLAGO FORMATION
Dense, damp, Ught olive to tan, Silty, fine
SANDSTONE, witii some clay, upper 2 feet
-Becomes massive
6 -
JBlO-1
-BlO-2
8 -
10 -
12 -
14 -
18 -
20 -
22 -
24
26 -
28 -
SM 117,6 9.3
-Becomes light red-brown
-Bio-3 16 -r r:4:t;
m m
A'sA-
8/10"
:^io-4 I
-BlO-5
6/9" 115.7 12.3
Figure A-20, Log of Boring LB 10 LCG
1
SAMPLE SYMBOLS
• ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST DRIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
SOIL
CUSS
(USCS)
BORING LB 10
ELEV. (MSL.) 290
EQUIPMENT
DATE COMPLETED 11/23/99
ROTARY BUCKET 30"
;UJ'
uj^ca
H' (0|
UI,
^^^^ a: a
ai
•a
u
30
MATERL\L DESCRIPTION
- 32 -
- 34
-BlO-6
- 36 -
38
- 40 -
42 -
44 -
JBlO-7
46 --BlO-8
48
- 50 --BlO-9
SM
-Clay seam 1/8' thick, horizontal; not remolded
Dense, moist, light reddish-brown, SUty, fine
SANDSTONE, massive
-Joint; N30E, 65SE, with black, manganese oxide
coating 14/8"
-Becomes light brown to tan, SUty, very fine
SANDSTONE 14/9"
-Becomes light olive-brown
I
I
BORING TERMINATED AT 51.5 FEET
Figure A-21, Log of Boring LB 10 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B STANDARD PENETRATION TEST
DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE
DRIVE SAMPLE (UNDISTURBED)
WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
I
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
SOIL
CLASS
(USCS)
BORING LB 11
ELEV. (MSL.) 206
EQUIPMENT
DATE COMPLETED 11/24/99
ROTARY BUCKET 30"
;uj'
l-l ^1—
<E£\
H"3 UJ^O
S^EQ
Q_Q5s^
gu^
gd
5-5; oc^ gz
u
MATERIAL DESCRIPTION
2 -
4 -
SC TOPSOIL
Loose, diy, dark brown, vety Clayey, fine SAND
6 -
LBl 1-1
-Bll-2
CL-CH
8 -
10 -
12 -
tBii-3 Vm
m
•:t:i:-c-
A'i'.*: .'yi'.t.
mi m m
0
SM
SANTTAGO FORMATION
Stiff, moist, olive to brown, SUty ClAYSTONE
-Very weafliered and fractured,
-Bedding plane shear with (calcium sulfate);
horizontal
-6" concretion layer at 8 feet-lense
-Abundant horizontal gypsum seams (1/8-1/2" thick)
-Horizont^ dg)ositwn-cont^
Dense, damp, reddish-brown, SUty, medium
SANDSTONE, wifli some clay
1/6" 102.9 20.2
16 -
18 -
20 -
22 -
24 -
:
28 -
-8" fossU shell layer
-1/2" horizontal clay seam; not remolded
119.0 10.0
Jigure A-22, Log of Boring LB 11 LCG
1
SAMPLE SYMBOLS
• ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST 1 ... ORIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE 3C ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
BORING LB 11
ELEV. (MSL.) 206
EQUIPMENT
DATE COMPLETED 11/24/99
ROTARY BUCKET 30"
:co
S«3
gd
>5;
Qi a
UJ
MATERLAL DESCRIPTION
Hard/dense, moist, reddish-brown, Qayey
SANDSTONE, and Sandy ClAYSTONE
-Altemating beds
-Horpmntal bedding^
Hard, very moist, olive, Silty CLAYSTONi
-Fractured, with gypsum-linings 10 112.7 18.4
-Remolded clay seams N-S. 40E; discontinuous, 1-2"
zone
Dense, damp, light brown-olive, SUty, fine
SANDSTONE
BORING TERMINATED AT 45 FEET
Figure A-23, Log of Boring LB 11 LCG -1
„ . » .,,T .y^^r o • ... SAMPLING UNSUCCESSFUL
SAMPLE SYMBOLS ^
^ ... DISTURBED OR BAG SAMPLE
B ... STANDARD PENETRATION TEST
B ... CHUNK SAMPLE
• ... DRIVE SAMPLE (UNDISTURBED)
Z ... UATER TABLE OR SEEPAGE [
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS ANO TIMES. I
I
PROJECT NO. 06403-12-01
OEPTH
IN
FEET
SOIL
CUSS
(USCS)
BORING LB 11
ELEV. (MSL.) 206
EQUIPMENT
DATE COMPLETED 11/24/99
ROTARY BUCKET 30"
!UJ'
:co Ui
UJ (og Ss
H'^
gci
5-5; Q:
LU
u
30
32
34
36
-Bll-6
38 -
40
42 -
44 -
MATERIAL DESCRIPTION
SC-CL
Hard/dense, moist, reddish-brown, Qayey
SANDSTONE, and Sandy ClAYSTONE
-Altemating beds
CL-CH
-Horizontal bedding^
Hard, very moist, olive, Silty CLAYSTONE
-Fractured, with gypsum-linings
-Remolded clay seams N-S, 40E; discontinuous, 1-2"
zone
SM
Dense, damp, Ught brown-olive. SUty, fine
SANDSTONE
10 112.7 18.4
BORING TERMINATED AT 45 FEET
Figure A-23, Log of Boring LB 11 LCG
' SAMPLESYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST 1 ... DRIVE SAMPLE (UNDISTURBED) ' SAMPLESYMBOLS
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE I ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
5-CD O _l
a
X
SOIL
CLASS
(USCS)
BORING LB 12
ELEV. (MSL.) 215
EQUIPMENT
DATE COMPLETED 11/24/99
ROTARY BUCKET 30"
H^l-
<nEN
UJMO 2lS-l UI^O
H'^ §^
gd
oc a
ce:
ag
gz
u
MATERIAL DESCRIPTION
4 -
-B12-1
6 -
- 8 -
- 10 -
- 12 -
- 14 -
<fp3
•.f.^.y
A-yk
I A'*'.f -m
• J •.
mi
* • 4 * •
'•t-f:f:
mi
''i']A'
- 16
• • 4 • ^
B12-2
m mi
:^i2-3
18 -
- 20 -
22 -
24 --B12^
-B12-5
- 26 -
28
CL
SM
5M-ML
SM
CL-SC
CL
TOPSOIL
Stiff, humid to diy, dark gray-brown, Sandy CIAY
SANTIAGO FORMATION
Dense, damp, light brown to tan, SUty, fine
SANDSTONE, with coarse lenses, massive
Dense, damp, light olive, very SUty, very fine
SANDSTONE to Sandy SILTSTONE
Dense, damp to moist, light brown, Silty, medium
SANDSTONE
-N-S, lOE, very.irregular (iegosition con^
Hard, moist, olive to brown. Silty. Sandy
ClAYSTONE. with irregular r-2" lenses of
sandstone, with scattered gravel
Hard, moist, olive. SUty CLAYSTONE; fracwred.
massive
-Joint with 1/4". jarosite-stained clay lining N80E,
30S
122.9 11.7
108.0 20.6
Figure A-24, Log of Boring LB 12 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B
^ ... DISTURBED OR BAG SAMPLE B
STANDARD PENETRATION TEST
CHUNK SAMPLE
.. DRIVE SAMPLE (UNDISTURBED)
.. UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS AND TIMES.
5R0JECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
g -I O X
.1-
H
SOIL
CUSS
(USCS)
BORING LB 12
ELEV. (MSL.) 215
EQUIPMENT
DATE COMPLETED 11/24/99
ROTARY BUCKET 30"
Sg'
H^h
!coC
iUJ sS
H'l
§u^ go
a
gz
u
30
32
34 -
MATERL\L DESCRIPTION
-B12-6
36 -
38 -
40 -
I
-Slight seepage along fracmre
-12' horizontal deposition contact
Vety hard, danq), gray-olive, Sandy SILTSTONE,
with some cl^
-Massive, no fractures, difficult drilling
ML 14/7"
BORING TERMINATED AT 41 FEET
Figure A-25, Log of Boring LB 12 LCG
' SAMPLESYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED)
@ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE X . . UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> CS
o
H
SOIL
CUSS
(USCS)
BORING LB 13
ELEV. (MSL.) 190
EQUIPMENT
DATE COMPLETED 11/29/99
ROTARY BUCKET 30"
HS I-
to (O
I— l__J -A
z«3
u.
d
5-5;
Qi^
(0 UJ
MATERIAL DESCRIPTION
- 2
4
6 H
8
- 10 -
- 12 -
- 14 -
CL-SC
-B13-1
m.
A^y.[:
•:-t:f:f
m
m
SM
- 16 -
JB13-2
JB13-3
- 18 -
- 20 -
22
24
26
28 -
VIL-SM
LB13-4
m m}
Alyl
m
Ar'y m m m
SM
TOPSOIL
Stiff, moist, daric brown to reddish-brown, vety
Sandy CLAY
SANTIAGO FORMATION
Dense, damp, light brown, SUty, fine SANDSTONE
116,4 10.6
-Bedding horizontal_
Hard, moist, light olive to brown, vety Clayey
SILTSTONE, widi mterbedded fliin SANDSTONE
beds
112.3 18.9
-Bedding N20W, SSW
Dense, damp, reddish-brown, SUty, fine
SANDSTONE, wifli some clay
-Cemented sandstone layer — 8" thick (fossUiferous)
Dense, danq> to moist, red-brown to olive, SUty. fine
SANDSTONE, with interbedded claystone
-4-5" claystone layer (no remolding)
118.5 16.1
Figure A-26, Log of Boring LB 13 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE I ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
SAMPLE
NO.
H
SOIL
CUSS
(USCS)
BORING LB 13
ELEV. (MSL.) 190
EQUIPMENT
DATE COMPLETED 11/29/99
ROTARY BUCKET 30" =a-
!(oC
it-sU. H
Ui
Hi
a
uj^5
UJ
•o
u 30 MATERIAL DESCRIPTION
36 -
38 -
40 -
42 -
44
-B13-7
46 -
48 -
54 -
2
-B13-8
JB13-9
CL
ML
CL
SP
SM
ML
-4-6" thick cemented sandstone layer
-Sli^t_seep^e (perched)
Hard, vety moist, olive to brown, SUty ClAYSTONE
-Fractured, caving, with water along fractures
-Sli^tseepage
Hard, moist, dark olive, SUty ClAYSTONE
Dense, very moist, light olive to brown, medium to
coarse SANDSTONE
Very dense, damp, medium olive-gray, SUty. very
fme SANDSTONE, wifli ttace clay
BORING TERMINAT^^ AT 60 FEET
Hard, moist, dark olive, Qayey SILTSTONE
Veiy hard, moist, olive-gray. Clayey SILTSTONE
-Slight to moderately cemented in upper portion
12/9" 115.4 15.3
20/10"
igure A-27, Log of Boring LB 13 LCG
SAMPLE SYMBOLS SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST M ... DRIVE SAMPLE (UNDISTURBED)
.. DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE I ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIOHS AND TIMES.
PROJECT NO. 06403-12-01
BORING LB 14
ELEV. (MSL.) 195
EQUIPMENT
DATE COMPLETED 11/29/99
ROTARY BUCKET 30"
z^^
IN o>^
HS
tog
Ss
>-
gci
a
a|
gz
u
MATERLAL DESCRIPTION
- 28
TOPSOIL
Loose, dry, dark gray-brown. Clayey, fine SAND
SANTIAGO FORMATION
Dense, damp, light brown to tan, SUty, fine to
medium SANDSTONE
Dense, damp, light olive, Sandy SILTSTONE, witii
trace clay
Vety dense, damp, light brown-tan, SUty, fine to
medium SANDSTONE
-Becomes moist
-Very irregular scour-contact into weathered
claystone (to a clay seam). N70E, IOS, wet, plastic,
1/2-1 "thick.
Hard, moist, Ught olive, very Silty CLAYSTONE,
with some sand interbedded throughout
-Discontinuous clay seams (slickensided firactures and
varying dips in 6" zone)
8/10" 124.2 14.0
Figure A-28, Log of Boring LB 14 LCG
SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B
^ ... DISTURBED OR BAG SAMPLE B
STANDARD PENETRATION TEST
CHUNK SAMPLE
DRIVE SAMPLE (UNDISTURBED)
WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. I
I
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
>-ta a _i o
X
SOIL
CUSS
(USCS)
BORING LB 14
ELEV. (MSL.) 195
EQUIPMENT
DATE COMPLETED 11/29/99
ROTARY BUCKET 30"
iLU' Ot.
UJ =a-
• UJ;
:LL.
a,oc^_.
§u^
go
Qi
UJ5
p. I-to
H UJ
- 30 MATERIAL DESCRIPTION
-B14-3
- 32 -
34
36 -
- 38 -
- 40 -
15/8"
ML
Vety dense, moist, gray-oUve, Clayey SILTSTONE;
with some veiy fine sand
-Horizontal bedding^ _
Very hard, moist, dark olive-brown, SUty
ClAYSTONE, massive
JB14^
~LB14-5
CL
42
15/8"
BORING TERMINATED AT 42 FEET
Figure A-29, Log of Boring LB 14 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B
^ ... DISTURBED OR BAG SAMPLE B
STANDARD PENETRATION TEST DRIVE SAMPLE (UNDISTURBED)
CHUNK SAMPLE Z ... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATIOM AND AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
SOIL
CUSS
(USCS)
BORING LB 15
ELEV. (MSL.) 250
EQUIPMENT
DATE COMPLETED 11/30/99
ROTARY BUCKET 30"
;UJ' Hai-
:to_
gSg
:U. §L
UJ,
a
ai
•o
u MATERAL DESCRIPTION
2 -
6 -
8 -
10 -
12 -
LANDSLIDE DEBRIS
Loose, humid, dark brown, very Clayey, fine SAND
-Becomes medimn dense, damp, light olive, vety
Clayey, fine to coarse SAND
-Highly weathered and fractured
SC
-B15-1
-B15-2
14 -
16
18 -
20 --B15-3
22 -
- 24 -
- 26 -
- 28 -
CL
CL
SM
-Clay seam, l/8"-l/4"; N65E, 25N, joint, wifli
calcium sulfate lining
'stiff7moist,~olive~ very Sandy CLAYSTONE, with
some sUt, very fracmred, weathered
-Fracmre and clay seam; l/8"-l/4"; N60E, 8-lOSE.
wet. plastic and slickensided, throughgoing, with
calcium sulfate lining
-Remolded clay seam; l/4"-l/2", N50W, 15-20NE;
wet, plastic and throughgoing, with orange iron oxide
staining-base of slide
SANTIAGO FORMATION
Hard, moist, olive, Silty ClAYSTONE; fracmred, but
massive and intact
-Becomes metUum olive
-Massive, moderate fracmring
-Discontinuous clay seams; zone — 12" thick at N40W,
30-40NE
-Becomes very hard, massive, with few fracmres
-Horizontal ttansitiqn to siltstoneand san(lstone_
Dense, damp, light brown to tan, Silty, fme
SANDSTONE
1/6" 106.7 21.0
122.2 13.4
Figure A-30, Log of Boring LB 15 LCG
OA,,„T r- r.^n..r,^r c 0 ... SAMPLING UNSUCCESSFUL
SAMPLE SYMBOLS _
^ ... DISTURBED OR BAG SAMPLE
B... STANOARO PENETRATION TEST
B ... CHUNK SAMPLE
1... DRIVE SAMPLE (UNDISTURBED) |
I ... UATER TABLE OR SEEPAGE |
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESEHTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
Qi
> UJ CO 1-
o <E _1 3
o a X z 1-p H o -1 oe. CD
SOIL
CUSS
(USCS)
BORING LB 15
ELEV. (MSL.) 250
EQUIPMENT
DATE COMPLETED 11/30/99
ROTARY BUCKET 30"
5g .
nas
H'
LU CJ
Q
Qi^
Pi_
(O UJ
•o u
30 MATERIAL DESCRIPTION
-B15-4
LB15-5
32 -
34
36 -
38
40 --B15-6
20/11"
-Becomes medium to very coarse-grained and massive
20 128.9 12.4
BORING TERMINATED AT 41 FEET
Figure A-31, Log of Boring LB 15 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B
^ ... DISTURBED OR BAG SAMPLE B
.. STANDARD PENETRATION TEST •
.. CHUNK SAMPLE Z
DRIVE SAMPLE (UNDISTURBED)
UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
BORING LB 16
ELEV. (MSL.) 175
EQUIPMENT
DATE COMPLETED 11/30/99
ROTARY BUCKET 30"
Zuj'^
to
UJf^iu ui;
gui
gd
Qi
uiiS
Qi
UJ
•o u
MATERDVL DESCRIPTION
TOPSOIL
Stiff, humid, dark brown, Sandy CIAY
SANTIAGO FORMATION
Hard, damp, olive-light brown, Sandy ClAYSTONE
-Very fracmred and weathered, with calcium sulfate
filling some fractures
Dense, damp, light olive. Clayey SILTSTONE
8/11" 121.4 13.3
Dense, damp. Ught brown to tan. SUty. fine
SANDSTONE, massive
-Irregular depositional contact approximately N-S,
20S; no shearipi
Hard, moist, light olive to brown. Sandy
CLAYSTONE to very Clayey, fine SANDSTONE
-Massive, blocky fracturing
Figure A-32, Log of Boring LB 16 LCG
I
I
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B
^ ... DISTURBED OR BAG SAMPLE B
STANDARD PENETRATION TEST
CHUNK SAMPLE
• DRIVE SAMPLE (UNDISTURBED)
Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATIOH ANO AT THE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
SAMPLE
NO.
Qi
2-Hi CO H
a <C -I
o a X z 1-p H o -1 Qi tD
SOIL
CUSS
(USCS)
BORING LB 16
ELEV. (MSL.) 175
EQUIPMENT
.DATE COMPLETED 11/30/99
ROTARY BUCKET 30"
cui'
HS
Q_ '•^ w
H-
^ul
5d
UJ,
Q
uji5 Q:
ag
gz
u
- 30
32
- 34 -
- 36 -
MATERL\L DESCRIPTION
:^16-5
44 -
48 -
50 -
14 123.8 13.3
• • F
.yv
A'4'.\j
• •]• »
im
.'v'j'.r.
• •
A-yy
-Qay seam-contact. N60E, 20SE, 1/16-1/4" diick,
wet. plastic and undulating; with very fractured,
_iron--stain^ zone ~ 2" on either side
Dense, damp to moist, li^t brown to olive. SUty.
medium to coarse SANDSTONE, wifli some clay
SM
-B16-6
LB16-7
m
•.r.l.'
• k * c,
m:
' > • •
16
CL
ML
SM
-Fine, jravelly sand along nearly horizontal contact
Hard, moist, medium olive-brown, SUty
CLAYSTONE
Very hard, damp, dark gray-olive. Clayey
SILTSTONE, wifli some very fine sand
Dense, damp, light brown, SUty, fine SANDSTONE
20/11" 128.0 10.5
BORING TERMINATED AT 52 FEET
Figure A-33, Log of Boring LB 16 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B
^ ... DISTURBED OR BAG SAMPLE B
.. STANDARD PENETRATION TEST DRIVE SAMPLE (UNDISTURBED)
.. CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
SOIL
CUSS
(USCS)
BORING LB 17
ELEV. (MSL.) 240
EQUIPMENT
DATE COMPLETED 12/1/99
ROTARY BUCKET 30"
Zui'l
:to H; to' UJ;
to
ui
UJ^tD
> NSIT F.) RY DE (P.C. MOISl ONTEN a u
MATERIAL DESCRIPTION
- 4 -
- 6 -
- 8 -
- 10 -
- 12 -
- 14 -
- 16 -
- 18 -
- 20 -
CL
FILL
Soft, humid, monled dark brown to light olive, SUty
CLAY, with some sand, porous texture, rootiets
LB17-3
- 22 -
- 24 -
- 26 -
- 28 -
CL
SM
SANTIAGO FORMATION
Vety stiff, damp, medium olive, SUty ClAYSTONE;
very fractured, britde
-Near-horizontal contact (transitional over several
inches)
Dense, damp, light olive to brown, vety Silty, fine
SANDSTONE, with some clay
-6" X 24" lenticular concretion
-Becomes light brown to tan. very SUty, fine
SANDSTONE
-Becomes medium-grained (orange, horizontal 3" bed)
-Becomes orange, coarse-grained
SM
ViL-CL
SM
-Becomes very moist, orange, SUty. very coarse
SANDSTONE
-Slight seepage (perched above sharp, horizontal,
scour-contact
Hard, moist, li^t olive, vety Clayey SILTSTONE
-Cemented, fine sandstone, 6"-8"-l—, gray, horizontal
at base
8/10"
127.4 11.5
Figure A-34, Log of Boring LB 17 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B
^ ... DISTURBED OR BAG SAMPLE B
STANDARD PENETRATION TEST
CHUNK SAMPLE
,. DRIVE SAMPLE (UNDISTURBED)
.. UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES. I
I
PROJECT NO. 06403-12-01
Qi
> UJ CO 1-
o <E _1 ZJ
o c X z H p H a _l Qi CD
SOIL
CUSS
(USCS)
BORING LB 17
ELEV. (MSL.) 240
EQUIPMENT
DATE COMPLETED 12/1/99
ROTARY BUCKET 30"
HS
Qi
H Ll. \
to
— vt^i in
in
gd
>5;
Qi^
a
UJ-5 oe
to LU
30 MATEIUAL DESCailPTION
.B17-4 SM
36 -
38 -
Dense, wet. light olive. Silty. medium SANDSTONE
-Slight seepage
-Scoured deposition-contact; NlOE. IOW (wifli - 1"
_ iron-stained basal I^er)
Hard, moist, medium olive, Sifty CLAYSTONE
14 123.4 12.3
CL
-Becomes very sandy Oenses)
-Becomes very hard, dark olive-gray, SUty
CLAYSTONE 20/10"
BORING TERMINATED AT 42 FEET
i'igure A-35, Log of Boring LB 17 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL
^ ... DISTURBED OR BAG SAMPLE
B... STANDARD PENETRATION TEST
B ... CHUNK SAMPLE
... DRIVE SAMPLE (UNDISTURBED)
... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
SOIL
CUSS
(USCS)
BORING LB 18
ELEV. (MSL.) 215
EQUIPMENT
DATE COMPLETED 12/1/99
ROTARY BUCKET 30"
Suj'^
S|H
Qi^^to
"So Ui
H . iu^
gd
5-5; Qi
a|
gz
u
MATERLAL DESCRIPTION
- 2
- 4 H
- 6
8
10 -
- 12 -
14 -
h 16 -
18 -
20 -
22 -
h 24 -
CL
COLLUVIUM
Soft, damp, dark brown. Sandy CIAY
CL
SANTIAGO FORMATION
Hard, moist, medium light, olive-brown, vety SUty
CLAYSTONE
Dense, damp. Ught brown to tan. SUty, fine
SANDSTONE
SM
-Near-horizontal contact
CL Hard, moist, light medium olive, Sandy
CLAYSTONE, some sUt
-Deposition-contact, N65E, IOS
ML
Dense, damp, light olive-brown, very Sandy
SILTSTONE
-Cemented sandstone layer 12"-H- thick, - 20" wide
(lense)
^ -Horizontal contact
SM
Dense, damp, light tan-olive. SUty, fine
SANDSTONE, massive
BORING TERMINATED AT 25 FEET
Figure A-36, Log of Boring LB 18 LCG
SAMPLE SYMBOLS ° - ""SUCCESSFUL
^ ... DISTURBED OR BAG SAMPLE
B.
B.
. STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
. CHUNK SAMPLE Z ... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECrr NO. 06403-12-01
SAMPLE
NO.
H
SOIL
CUSS
(USCS)
BORING LB 19
ELEV. (MSL.) 275
EQUIPMENT
DATE COMPLETED 12/1/99
ROTARY BUCKET 30"
^H
IN
Hg tog ill-si
Ss
gd
a
°z
u
MATERIAL DESCRIPTION
-B19-1
12 -
14 -
16 -
18 -
20 -
22
24
^19-4
-B19-5
ML
SM
ML
CL
SM
TOPSOIL
Stiff, damp, dark brown. Sandy CIAY
SANmAGO FORMATION
Loose to mecUum dense, damp, reddish-brown, very
Clayey, fine SAND, wifli gypsum, very weathered
sandstone
Dense, damp, Ught olive, Sandy SILTSTONE
Dense, damp, reddish-brown, Silty, fine
SANDSTONE
-FossUiferous, with orgaiuc odor
-Ceinented sandstone (concretion) Dense, moist, light olive. Clayey SILTSTONE, with
some sand
-Horizontal bedding<ontact
Very stiff, very moist, medium olive, SUty
ClAYSTONE, with interbedded sandstone
(fossUiferous) and gypsum, and jarosite (iron sulfate)
coatings on fracmres
Dense, moist, reddish-brown, SUty, fine
SANDSTONE; very fossUiferous
121.1 9.4
Figure A-37, Log of Boring LB 19 LCG
SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B... STANOARD PENETRATION TEST •
@ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE Z
DRIVE SAMPLE (UNDISTURBED)
WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CQNDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
BORING LB 19
ELEV. (MSL.) 275
EQUIPMENT
DATE COMPLETED 12/1/99
ROTARY BUCKET 30" <to(
iUI sS
H'
(o,
Q: a
a| gz
u
MATERIAL DESCRIPTION
Hard, moist, olive, SUty ClAYSTONE
-Strong seepage at 34.5 feet
-Horizontal contact
107.2 21.5
Hard, wet, medium-dark olive, SUty ClAYSTONE
-Fractured (with water seepage) and jarosite/gypsum
coatings
-Horizontal contact
Dense, moist, reddish-brown, Silty, medium to coarse
SANDSTONE
16
Vety hard, moist, dark gray-olive, SUty ClAYSTONE
to Clayey SILTSTONE
BORING TERMINATED AT 45 FEET
Figure A-38, Log of Boring LB 19 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL
B... ^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
>-U o -I o X I-H
SOIL
CUSS
(USCS)
BORING SB 1
ELEV. (MSL.) 140
EQUIPMENT
.DATE COMPLETED
IRA 300
11/11/99 nas
S^s
gd
s-
a|
gz
u
- 0 MATEIUAL DESCRIPTION
- 2 -
- 4 -
- 6 -
- 8
- 10 -
12 -
- 14 -
- 16 -
- 18 -
20 -
22 -
24 -
26 -
h 28 -
SBl-1 I
SBl-2 I •
SBl-3
SBM [
V/
•/• SB 1-5
ML/CL
VlL/CL
ML
ALLUVIUM/COLLUVIUM
Soft, damp, dark yeUowish-brown, Sandy
SILT/CLAY, highly porous, roots
105.9 16.7
TERRACE DEPOSIT
Stiff, damp, pale yellowish-brown, Sandy
SILT/CLAY, sli^tiy porous
18
-Becomes dusky yeUow to grayish-orange to pale
yellowish-brown, with dark yellowish-orange speckles
21
22
-Mottied/stained black
SANTIAGO FORMATION
Vety stiff, damp, pale yellowish-orange to
grayish-orange, Sandy SILTSTONE, moderately to
intensely weathered, poorly defined laminations
27
Figure A-39, Log of Boring SB 1 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B ... STANDARD PENETRATION TEST 1 ... ORIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
>-C9 O -I
a X H H
SOIL
CUSS
(USCS)
BORING SB 1
ELEV. (MSL.) 140
EQUIPMENT
DATE COMPLETED
IRA 300
11/11/99
Pzr
to H;
CL "N.'
H': gu^^
gd
>5;
Qi^ Q
oe^
Pi_
to UJ
-o u
- 30 MATERIAL DESCRIPTION
SBl-6 MH Very stiff, moist, pale, yeUowish-orange to
grayish-orange, Sandy SILTSTONE, intensely
weathered, wet at tip of sample
16
BORING TERMINATED AT 31.5 FEET
Figure A-40, Log of Boring SB 1 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST 1 ... ORIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
5-
to
O _J
o
X
SOIL
CUSS
(USCS)
BORING SB 2
ELEV. (MSL.) 115
EQUIPMENT
DATE COMPLETED
IRA 300
11/11/99
;LU'
:S\
•a§ UJ
H':
§^ gd
>5;
Q£
a
a| gz
CJ
MATERIAL DESCRIPTION
2 -
4 -
- 6 -
- 8 -
- 10 -
12 -
14 -
16 -
SB2-1
SB2-2
SB2-3
18 -
20
- 22 -
24
- 26 -
28 -•
W
Ay A , y
^A
w
Ay A
SB2-4
SB2-5 [
ML/CL
\A.\/ ,
I // /• ^A
ML/CL
ML/CL
ALLUVIUM
Very stiff, damp, dark yeUowish-brown,
SILT/CLAY, porous, scattered soU carbonate, flecks
stringers
19
rBecomes pale yeUowish-brown 18 109.4
TERRACE DEPOSIT
Soft to stiff, damp to very moist, dusky yellow
SILT/CLAY
-Groundwater at 15 feet
Stiff, wet, mottied dark yeUowish-orange, elastic
SILT/CLAY
-Becomes firm, moist to damp, dusky yeUow,
mottied dark yeUowish-orange, SILT/CLAY
25 104.3
19.2
21.6
Figure A-41, Log of Boring SB 2 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST • .. . DRIVE SAMPLE (UNDISTURBED) 1 SAMPLE SYMBOLS STANDARD PENETRATION TEST
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE z.. . WATER TABLE OR SEEPAGE 1
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> CD O -I o X I-H
SOIL
CUSS
(USCS)
BORING SB 2
ELEV. (MSL.) 115
EQUIPMENT
DATE COMPLETED
IRA 300
11/11/99
og'^
^1^
to'
to
UJ 5-t
a
ui6 Qi
P._
1^ •o o
- 30 MATEIUAL DESCRIPTION
SB2-6 ML/CL SANTIAGO FORMATION
Stiff, moist to wet, dusky yeUow, mottied dark
yeUowish-orange, SILTSTONE/CLAYSTONE, highly
weathered -
BORING TERMINATED AT 31 FEET
28
Figure A-42, Log of Boring SB 2 LCG
SAMPLE SYMBOLS ° *"" ^UNSUCCESSFUL
S ... DISTURBED OR BAG SAMPLE
B.
B.
. STANDARD PENETRATION TEST 1... DRIVE SAMPLE (UNDISTURBED)
. CHUNK SAMPLE Z ... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESEHTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
BORING SB 3
ELEV. (MSL.) 101
EQUIPMENT
DATE COMPLETED
IRA 300
11/11/99
•IXi'
Ot
UJUO
H'^
to, ll.
d
5-5; Qi
UJ$>
Qi
IU
o u
MATERIAL DESCRIPTION
2 -
h 4 -
6
8
10
12
14 i
16
18
1-20-1
22
24
26
SB3-1
SB3-2
SB3-3
SB3-4
ALLUVIUM
Stiff, damp, dark yellowish-brown, SAND,
SILT/CLAY
ML/CL
MH/CL
SB3-5
-Trace of sand below 10 feet
-Groundwater at 11.5 feet
TERRACE DEPOSIT
Stiff, wet, very pale orange to gray-orange
SILT/CLAY
-Becomes very stiff, pale to dark yeUowish-brown
CUML
SANTIAGO FORMATION
Stiff, damp to moist, mottied dark yellowish-orange
and yellowish-gray, Sandy CLAYSTONE/SILTSTONE
16
14
15 107.0 22.6
19
17 106.1 21.8
BORING TERMINATED AT 26 FEET
Figure A-43, Log of Boring SB 3 LCG
I
I
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B
@ ... DISTURBED OR BAG SAMPLE B
STANDARD PENETRATION TEST
CHUNK SAMPLE
DRIVE SAMPLE (UNDISTURBED)
WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
tD O SOIL
CLASS
(USCS)
BORING SB 4
ELEV. (MSL.)
EQUIPMENT
90 DATE COMPLETED
IRA 300
11/11/99
feUI'^
HgH
=a-
to«
to
iLl
ujgS
H'
to.
Qi
a
UJ-5
Ui
•O
U
MATERIAL DESCRIPTION
2 -
4 -
SB4-1 [
8 -
10 -
12 -
14 -
16 -
18 -
20 -
22 -
24 -
26 -
28 -
[•>i •/ A ./ •
/„
SB4-2
SB4-3 [
y
ALLUVIUM
Vety stiff, damp, moderate brown to moderate
olive-brown and brownish-black, Sandy SILT/CLAY
ML/CL
/
/
SB4-4 i
-:Q
SB4-5 [
•v."!-v2r-
:o::'-.
18
Very stiff, damp, dark yeUowish-brown, Sandy SILT,
small, fingemaU sized sheUs
ML 17
-Groundwater at 13.5 feet
-(Charcoal flecks, sampler wet
SP
TERRACE DEPOSIT
MetUum dense to dense, very moist to wet,
reddish-brown to brown. Gravelly, fine to coarse
SAND
-Coarse gravel fragments, becomes moist
-WeU graded, fine to coarse sand, wet, gravelly
-Mottied many colors
15
25 110.8 18.1
55
Figure A-44, Log of Boring SB 4 LCG
1
SAMPLE SYMBOLS
n ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST 1 ... ORIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE Z ... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATIOM AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS AND TIMES.
PROJECrr NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
oe >-hi CD t-O <n _1 o a X z H p H a -1 GR SOIL
CUSS
(USCS)
BORING SB 4
ELEV. (MSL.)
EQUIPMENT
90 .DATE COMPLETED
IRA 300
11/11/99
UJ^CQ
H'
to,
UJ,
>-5;
Qi
a
uj^5
p
gz
u
I
f
}
- 30 MATERIAL DESCRIPTION
SB4-6 ML/CL SANTIAGO FORMATION
Vety stiff, moist, yeUowish-gray, Sandy
SILTSTONE/CLAYSTONE
29
BORING TERMINATED AT 31 FEET
Figure A-45, Log of Boring SB 4 LCG
SAMPLE SYMBOLS ° ''" ''^'""•'"^ "''SUCCESSFUL B ... STANDARD PENETRATION TEST 1... DRIVE SAMPLE (UNDISTURBED) j
^ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE Z ... WATER TABLE OR SEEPAGE | I
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. I
I
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
5-CD O _J O SOIL
CUSS
(USCS)
BORING SB 5
ELEV. (MSL.) 75
EQUIPMENT
DATE COMPLETED
IRA 300
11/12/99
hi
gd
oe^ a
ui*5
ag
gz
u
- 0
- 2
4
I- 6
8 -
10 -
12 -
h 14 -
16
18 -
h 20 -
22 -
h 24 -
MATERL\L DESCRIPTION
- 26
•A
/ / •
SB5-1 [
/ / •
• / SB5-2
SB5-3 [
SB5-4
SB5-5 [
A V , •A
/
V
ALLUVIUM
Vety stiff, damp, light olive-gray, Sandy SELT/CIAY
ML/CL 19
-Becomes very stiff 27
ML/CL TERRACE DEPOSIT
Very stiff, very moist, light olive-brown to moderate
yeUowish-brown, Sandy SILT/CLAY
-Groundwater at 19 feet
19
MH/CL
ML
SANTIAGO FORMATION
Firm, moist, dusky yellow,
SILTSTONE/CLAYSTONE, highly porous, intensely
.weatheredj^ sampler wet
Very stiff, wet to saturated, pale olive, fine, Sandy,
SILTSTONE, wifli 2-4" fliick. fine to medium
sandstone mterbeds, moderately weathered
14 104.3 23.2
27
BORING TERMINATED AT 26.5 FEET
Figure A-46, Log of Boring SB 5 LCG
SAMPLE SYMBOLS n ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST 1 ... DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE Z ... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TREHCH LOCATION ANO AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01 I
DEPTH
IN
FEET
SAMPLE
NO.
> CD O _1 o X I-
H
SOIL
CUSS
(USCS)
BORING SB 6
ELEV. (MSL.) 98
EQUIPMENT
.DATE COMPLETED
IRA 300
11/12/99
SIH
:to Ui HS
toH
Ui^fi
gd
a
hi
-o u
MATERIAL DESCRIPTION
- 2 -
4 -
- 6 -
8 -
I- 10 -
12
h 14 -
16 -
18
h 20 -
22 -
24 -
26
SB6-1
SB6-2
SB6-3
V
[
V
%
A •A V
ML/CL
:\\\
r.l
SM
I
•'••IJ
SB6^
SM
1-i
SB6-5
^ A
ML/CL
ML/CL
ALLUVIUM
Very stiff, dry to damp, pale to moderate
yellowish-brown, SILT/CLAY, veined with soU
carbonate
28
MetUum dense, damp, dark yellowish orange, SUty
fme SAND
TERRACE DEPOSIT
Medium dense, damp, dark yellowish-orange. Silty,
fine to medium SAND 21 102.8 5.0
Very stiff to hard, moist, dark yellowish-brown,
mottled olive to orange, SILT/CLAY
25
SANTIAGO FORMATION
Very stiff to hard, moist, pale olive,
SILTSTONE/CLAYSTONE, moderately weadiered 27 108.3
BORING TERMINATED AT 26 FEET
NO GROUNDWATER ENCOUNTERED
19.5
Figure A-47, Log of Boring SB 6 LCG
3 SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL
^ ... DISTURBED OR BAG SAMPLE
B ... STANDARD PENETRATION TEST
B ... CHUNK SAMPLE
DRIVE SAMPLE (UNDISTURBED)
WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. I
I
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
5-CD O _l O X
I-
H
SOIL
CUSS
(USCS)
BORING SB 7
ELEV. (MSL.) 170
EQUIPMENT
DATE COMPLETED
IRA 300
11/12/99
H
JUJ'
OL
CO
-^wg UJ
gu:
gci
uiiS oe^
u
- 0 MATEIUAL DESCRIPTION
2 -
- 4 -
- 6 -
- 8 -
10 -
- 12 -
- 14
- 16 -
18 -
20 -
- 22 -
- 24 -
- 26 -
- 28 -
SB7-1
SB7-2
SB7-3
SB7-4
SB7-5
[
I
[
:f •!• .•I. ••!•
f.l
-I -r
f.l •I i-t-I-
t'
.f-1 :< •!• •> .1- I
;l •!•
.f-1
I .-1-
I
-:f I-
.f-1
:l -I-
•ft
fj
•f
SM
SM
ALLUVIUM
Loose to metUum dense, dty, light olive-brown, SUty,
fine to metUum SAND, porous, rootiets
-Becomes non porous, metUum dense
-Laminae, spaced approximately 6" ^art
TERRACE DEPOSIT
Medium dense, humid, grayish-orange, SUty, fine to
metUum SAND
11
22
13
21
22
93.0 5.0
92.4 5.4
Figure A-48, Log of Boring SB 7 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST ORIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE z... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TREHCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
BORING SB 7
ELEV. (MSL.) 170
EQUIPMENT
DATE COMPLETED
IRA 300
11/12/99
;uj'
to to
^5° LLJ Ss
§L
UJ,
5-5;
Qi^ a
s-
a|
gz
u
I
i
}
MATERIAL DESCRIPTION
Medium dense, humid, very pale orange to
grayish-orange, SUty, fine to medium SAND
Hard, damp, moderate yeUowish-brown, Sandy
SILT/CLAY, stringers of soU carbonate
Hard, damp to moist, mottied yellowish-oranges,
dusky yellow, SILT, fingemaU sized sheU fossUs
Stiff, damp to moist, mottied black, dark and pale
yeUowish-brown, Sandy SILT/CLAY
SANTIAGO FORMATION
Very stiff, moist, mottied dark yellowish-orange,
yeUowish-gray, black, SILTSTONE/CLAYSTONE
BORING TERMINATED AT 51 FEET
NO GROUNDWATER ENCOUNTERED
25 95.6 7.3
52
56 108.1 11.0
13
31 107.8 21.0
Figure A-49, Log of Boriflg SB 7 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B .,
S ... DISTURBED OR BAG SAMPLE B ..
STANDARD PENETRATION TEST
CHUNK SAMPLE z.
,. DRIVE SAMPLE (UNDISTURBED)
.. UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS AND TIMES. I
I
PROJECT NO. 06403-12-01
OEPTH
IN
FEET
SAMPLE
NO.
tD a -J o
X
SOIL
CUSS
(USCS)
BORING SB 8
ELEV. (MSL.) 110
EQUIPMENT
.DATE COMPLETED
IRA 300
11/16/99
H^H
nas
z«3
in'^ to. u.
u
>5; Q:^
Q
s-
H^
a|
I- 0 MATERIAL DESCRIPTION
I
i
t-
- 14
- 2 -
- 4 -
6
- 8
H 10
12
SB8-1
SB8-2
SB8-3
16 -
18 -
- 20 -
L- 22 -
SB8-4
24
26
28 -
SB8-5
••A
/
•A
[
I
y
/
ML/CL
MH/CL
ML
ALLUVIUM
Firm, damp, dark yeUowish-brown, Sandy
SILT/CLAY, porous, roots
14 108.8 13.6
-Groundwater at 9.5 feet
-Becomes stiff
-Becomes very stiff to hard, moist, mottied dark
yeUowish-orange, pale olive and dark
yellowish-brown, SILT/CLAY
14
31 113.9 18.2
Firm, moist, grayish orange to dark yeUowish-orange,
Sandy SILT
Stiff, moist, dusky yellow, mottied dark
yellowish-orange, Sandy SILT, some fine sand,
moderately to intensly weathered
-Becomes clayey
21 103.8 23.5
Figure A-50, Log of Boring SB 8 LCG
SAMPLE SYMBOLS n... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST • ... ORIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
OEPTH
IN
FEET
SAMPLE
NO.
5-
CD a -I o X I-H
SOIL
CUSS
(USCS)
BORING SB 8
ELEV. (MSL.) 110
EQUIPMENT
.DATE COMPLETED
IRA 300
11/16/99
og .
ytoP UJ;
go
>S;
Qi^
uj?5
Qi^
UJ I-z o u
30
- 32
MATERIAL DESCRIPTION
1 SB8-6
34 -
ML/CL
SB8-7
- 36
Firm, moist, Ught oUve gray, Sandy
SILTSTONE/CLAYSTONE. mtensly weafliered
11
Very stiff, moist, olive black, plastic CLAY,
moderately weathered
CH 18
BORING TERMINATED AT 36 FEET
Figure A-51, Log of Boring SB 8 LCG
SAMPLE SYMBOLS ° '' * UNSUCCESSFUL
W ... DISTURBED OR BAG SAMPLE
B.
B.
. STANDARD PENETRATION TEST ORIVE SAMPLE (UNDISTURBED) 1
. CHUNK SAMPLE Z ... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
Qi
>-LU CD h-O <r -J zz o a X z 1-p H a -1 Qi tD
SOIL
CUSS
(USCS)
BORING SB 9
ELEV. (MSL.) 134
EQUIPMENT
.DATE COMPLETED
IRA 300
11/16/99
og':
to''
Ul; LU fv u-l
H'^
gci
>-5;
Oi^
hi^S
hi
•O u
- 0 MATERL\L DESCRIPTION
- 2 -
- 4 -
- 6 -
- 8 -
10 -
- 12 -
- 14 -
16 -
18 -
- 20 -
- 22 -
24 -
26 -
h 28 -
SB9-1
SB9-2
SB9-3
SB9-4
SB9-5
[
I
[;
y-
y
I
A
•A
• A
\
M
ML
SM/ML
ll
ML/CL
/1 ll
SM/ML
•!••} I.
ALLUVIUM
Stiff, diy, dark yeUowish-brown, Sandy SILT
11
MetUum dense to stiff, damp, grayish-orange, Sandy
SILT, SUty, fine SAND
16 100.7 11.7
Very stiff, damp, pale yeUowish brown, Sandy
SILT/CLAY
-Groundwater at 16 feet
17
-Becomes damp to moist, dark yellowish-brown, some
fine sand
21
TERRACE DEPOSIT
MetUum dense, moist to wet, dark yeUowish-orange,
Ught olive-gray, grayish-orange, altemating 1-2" fliick
beds of Silty SAND and SILT
13
Figure A-52, Log of Boring SB 9 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST 1 ... DRIVE SAMPLE (UNDISTURBED)
S ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> tD O -J O X
SOIL
CUSS
(USCS)
BORING SB 9
ELEV, (MSL.) 134
EQUIPMENT
.DATE COMPLETED
IRA 300
11/16/99
On -
HpU.
<C£N
UJ
US<D
S'
gL UJ Q
O
a|
gz
^O
u MATEIUAL DESCRIPTION
30 SB9-6 IZZ CL/CH
V
Vety stiff to hard, moist, mottied dark
yeUowish-orange, pale oUve, vety pale orange, CIAY
-Becomes oUve black at 31 feet
BORING TERMINATED AT 31 FEET
26 110.8 20.7
Figure A-53, Log of Boring SB 9 LCG'
J
I
I
SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B
^ ... DISTURBED OR BAG SAMPLE B
STANDARD PENETRATIOM TEST
CHUNK SAMPLE
DRIVE SAMPLE (UNDISTURBED)
UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECTNO. 06403-12-01
BORING SB 10
ELEV. (MSL.) 118
EQUIPMENT
DATE COMPLETED
IRA 300
11/16/99
z«3
H'^
go
^5;
Qi^
s-
Efc-to UJ
MATERUL DESCRIPTION
ALLUVIUM
Very stiff, damp, dark yeUowish-brown, Sandy SILT,
highly porous, roots
MetUum dense, damp, grayish-orange, poorly graded,
fine to medium SAND/SUty SAND
Very stiff, damp to very moist, dark and moderate
yeUowish-brown, altemating 6" to 1' thick Sandy
SILTS/CLAYS
-Groundwater at 10 feet
Loose to stiff, moist to wet, mtxlerate
yeUowish-brown, SUty, fine SAND, fine. Sandy SILT
TERRACE DEPOSIT
Dense, wet to saturated, grayish-orange, well graded,
fine to coarse SAND
-Gravelly, clayey sand, motfled yeUowish-oranges
SANTIAGO FORMATION
Very stiff, moist, light olive-gray, ClAYSTONE,
mt}derately weathered, carbonate lined laminae
-Becomes very hard, damp, pale olive, slighfly
\ weathered, "bentonitic/soapy* texture
BORING TERMINATED AT 26 FEET
-WT9-
20
13 106.7
42
50/5"
23.7
118.3 15.3
Figure A-54, Log of Boring SB 10 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST a... ORIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE z... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT ISMOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
SOIL
CUSS
(USCS)
BORING SB 11
ELEV. (MSL.) 153
EQUIPMENT
DATE COMPLETED
IRA 300
11/16/99
3g .
UJ UJ;
H .
gu^
go 5-5; or
to UJ
•o u
MATERL\L DESCRIPTION
- 16
2 -
4 -
SBl 1-1
6 -
8 -
10 -SBl 1-2
12 -
14 -
SBl 1-3
18 -
- 20 -SBl 1-4
- 22 -
24 -
26 -
ALLUVIUM
Stiff, diy, pale yellowish-brown, mottied dark
yellowidi-orange, Sandy, Clayey SDLT, highly porous,
scattered white soU carbonate.
ML
Very stiff, damp, pale yellowish-brown, Sandy
SILT/CLAY, slightiy porous
ML/CL 25 116.5 17.2 I
25 116.5 17.2
SBl 1-5
SM
SANTIAGO FORMATION
Very dense, damp, grayish-orange, mottied olives,
SUty, fine to coarse SANDSTONE, moderately
weathered
-Cemented
50/4.5" 111.2 11.5
Hard, dry, olive, mottied browns, ClAYSTONE,
slightly to moderately weathered
CH 35
BORING TERMINATED AT 26.5 FEET
Figure A-55, Log of Boring SB 11 LCG
SAMPLE SYMBOLS ° "' ^'^""•'"^ ""SUCCESSFUL
^ ... DISTURBED OR BAG SAMPLE
B.
B.
. STANDARD PENETRATION TEST 1... DRIVE SAMPLE (UNDISTURBED) 1
. CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
>-tD O -J O
H
SOIL
CUSS
(USCS)
TRENCH T 1
ELEV. (MSL.) 125
EQUIPMENT
DATE COMPLETED
TRACKHOE JD 555 24"
11/3/99
Ori •
<cE\
z«3
Q.''N^
H'
gL
UJ Q
>5;
Qi^ Q
UJ6* Qi
H^
Oz
u
MATERIAL DESCRIPTION
2 -
4 -
6 -
8 -
10 -
12
Tl-l
Tl-2
CL
COLLUVIUM
Vety stiff, dty. brownish black. Sandy CIAY
ML
ALLUVIUM
Very stiff, dry, light olive brbwn to dusky yellow,
Sandy SILT with lenses of brownish black clay up
to 2 feet thick, highly porous, abundant soU
carbonate
SM
:-t-':f:
• ¥ A »t •
SANTIAGO FORMATION
Dense, <iry, duslty yellow to dark yeUowish orange,
SUty. fine to medium SANDSTONE
TRENCH TERMINATED AT 13 FEET y
Figure A-56, Log of Trench T 1 LCG
1
j SAMPLESYMBOLS
1
i
n ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST DRIVE SAMPLE (UNDISTURBED) 1
j SAMPLESYMBOLS
1
i
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE z... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATIOM AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
OEPTH
IN
FEET
SAMPLE
NO.
>-CD O -J a X I-H
SOIL
CUSS
(USCS)
TRENCH T 2
ELEV, (MSL.) 105
EQUIPMENT
DATE COMPLETED
TRACKHOE JD 555 24"
11/3/99
SLU'^
UJ
UJ^CQ
H CO
Z' LU
UJ5 oe^
Pi_
to UJ
-o u
MATERLVL DESCRIPTION
2 -
4 -
- 6 -
8 -
10 -
12
^••/.,
y-/
CL
COLLUVIUM
Very stiff, dty, brownish black, Santly
SILT/CLAY, some fine grained sand, highly
porous, abundant sea shells
MH
Very stiff, dry, light to moderate olive brown,
SILT, some fine sand, highly porous
f 1 -I'
SM SANTIAGO FORMATION
Dense, dry, dusky yellow to tiark yellowish orange,
SUty, fine to medium SANDSTONE
TRENCH TERMINATED AT 12 FEET
Figure A-57, Log of Trench T 2 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED)
@ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
r
r
I;
r
SAMPLE
NO.
>-a o
I-
H
SOIL
CUSS
(USCS)
TRENCH T 3
ELEV. (MSL.) 135
EQUIPMENT
DATE COMPLETED 11/3/99
TRACKHOE JD 555 24"
Suj'^
nas
z«3
gu^
gd
i-\
s-
H^
a| gz *-o u
MATERLVL DESCRIPTION
2 -
4 -
T3-1
'r 6
CL
ML
COLLUVIUM
Stiff, dty, dark yeUowish brown, SUty CIAY,
some fine sand, highly porous, ^undant rootiets
SANTIAGO FORMATION
Medium stiff to stiff, dsanp, mottied oranges,
olives and browns, Sandy SILTSTONE, abundant
rootiets and soU carbonate, highly weathered
TRENCH TERMINATED AT 6 FEET
Figure A-58, Log of Trench T 3 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B
@ ... DISTURBED OR BAG SAMPLE B
.. STANOARO PENETRATION TEST ORIVE SAMPLE (UNDISTURBED)
.. CHUNK SAMPLE Z ... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWM HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
SOIL
CLASS
(USCS)
TRENCH T 4
ELEV. (MSL.) 190
EQUIPMENT
DATE COMPLETED 11/3/99
TRACKHOE JD 555 24"
Sui'^ Ori -
H?U.
to* uj;
to
IU Q.QSN^
gu^ go
5-5;
Qi
a
UJ^
Qi
Ui
•a u
MATERLVL DESCRIPTION
2 -
- 4 -
6 -
8 -
10 -
T4-1
CL COLLUVIUM
Vety stiff, dry, pale yeUowish brown, CIAY,
some fine sand
CL
SANTIAGO FORMATION
Stiff, damp, greenish gray, ClAYSTONE wifli fine
SAND, fractured, random orientations, moderately,
weathered, massive
-Less fractured, slightly weathered
-Contact undulatory, but generaUy horizontal,
poorly defined Sandy CLAYSTONE
TRENCH TERMINATED AT 11 FEET
Figure A-59, Log of Trench T 4 LCG
SAMPLE SYMBOLS ° "'' '"^''''^ ""SUCCESSFUL
^ ... DISTURBED OR BAG SAMPLE
B.
B.
. STANDARD PENETRATION TEST DRIVE SAMPLE (UNDISTURBED) 1
. CHUNK SAMPLE ? ... WATER TABLE OR SEEPAGE ^ p NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES. I
I
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
5-CO
o
H
SOIL
CLASS
(USCS)
TRENCH T 5
ELEV. (MSL.) 165
EQUIPMENT
DATE COMPLETED
TRACKHOE JD 555 24"
11/3/99 to Hg
tog Ss
H'^ gu^
gd
^5;
a
s-
a|
u
- 0 MATBEUAL DESCRIPTION
- 2 -
- 4 -
6 -
- 8 -
- 10
•t--:f:
CL
COLLUVIUM
Stiff, dry, pale to dark yellowish brown, SUty
CIAY, some fine to metUum sand
SM
SANTIAGO FORMATION
Loose, dry, very pale orange, SUty, fine to medium
SANDSTONE, weathered, ^proximately
horizontal, undulatory lower contact
MH - Stiff, dry to damp, light olive-gray SILTSTONE,
\ intensly fracmred, moderately weathered
TRENCH TERMINATED AT 10 FEET J
Figure A-60, Log of Trench T 5 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE z... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS MOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
TRENCH T 6
ELEV. (MSL.) 230
EQUIPMENT
DATE COMPLETED
TRACKHOE JD 555 24"
11/3/99
iUj'
H^
Sg
Ss
H .
gu^
gci
5-5;
Qi^
Q
s-
a|
gz
u MATERLVL DESCRIPTION
LANDSLIDE DEBRIS
Stiff, dry, pale yellowish brown, SILT/CLAY,
some fine and metUum sand, abimdant rootiets,
porous
Stiff, dty, greenish gray to gyayish olive, very
Clayey SILT; weafliered fractured, abundant
calcium sulfate and carbonate, mottied dark
yeUowish orange, scattered roots
-Grooved, slip plane, N80E, 45 degrees N.
SANTIAGO FORMATION
Hard, damp, medium to light olive, vety SUty
CLAYSTONE
-Thin calcium sulfate (gypsum) coatings along
blocky fracmres
TRENCH TERMINATED AT 8 FEET
Figure A-61, Log of Trench T 6 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST 1 ... ORIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
@ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE Z ... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
OEPTH
IN
FEET
SAMPLE
NO.
-I O X
I-
H
SOIL
CUSS
(USCS)
TRENCH T 7
ELEV. (MSL.) 210
EQUIPMENT
DATE COMPLETED 11/3/99
TRACKHOE JD 555 24"
Ori .
Hy»-
H?U.
H«3
^cog UJ Ui:
H .
gu^
gd
>5;
Qi
UJ^>
Qi
Pl-to tu
MATERIAL DESCRIPTION
2 -
4 -
6 -
8 -
10 -
12 -
14 -
16 -
yy ^A
7-• A y y
V A
y
y
A
A V . V--A y /
ly-.A y
•/
A.
ML/CL
ML/CL
ZL-ML
COLLUVIUM
Stiff, dry, moderate yellowish brown, CLAY/SILT,
abundant rootiets
LANDSLIDE DEBRIS
Stiff, dty to damp, light olive gray to greenish
gray Sandy SILT/CLAY, massive, moderately to
hi^y fiactured and weathered, "punky'/mottied
appearance with "blebs" of Sandy material, porous,
abundant soU carbonate and sulfate (gypsum)
-Abundant randomly-oriented fractures and clay
seams
^ -Approx. 2-3 feet ttansition to near-horizontal
\ contact
SANTLVGO FORMATION
Hard, damp to moist, olive to brown, SUty
CLAYSTONE
"X -Massive to horizontal y
TRENCH TERMINATED AT 17 FEET
Figure A-62, Log of Trench T 7 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B
^ ... DISTURBED OR BAG SAMPLE B
,. STANDARD PENETRATION TEST ORIVE SAMPLE (UNDISTURBED)
.. CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AMD TIMES.
PROJECT NO. 06403-12-01
OEPTH
IN
FEET
SAMPLE
MO.
>-CD O
H _J
SOIL
CUSS
(USCS)
TRENCH T 8
ELEV. (MSL.) 250
EQUIPMENT
DATE COMPLETED 11/3/99
TRACKHOE JD 555 24"
OL
:to Itoc
;uj
CO
sS
gl
UJ,
>-5;
Qi a
UJ^
Qi
ag gz '•o u
- 0
MATERIAL DESCRIPTION
2 -
4 -
6 -
T8-1
ML
ML/CL
COLLUVIUM
Stiff, dry, pale yeUowish brown, SILT, some fine
sand, rootlets, soil carbonate
SANTIAGO FORMATION
Stiff, dry, light brown, light olive gray, Ught olive
brown, predominantiy Sandy
SILTSTONE/CLAYSTONE, beds less flian 1/4"
duck, SUty SANDSTONE mterbedded; beds
generally horizontal m places
TRENCH TERMINATED AT 7 FEET
Figure A-63, Log of Trench T 8 LCG
J
I
I
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B
^ ... DISTURBED OR BAG SAMPLE B
STANDARD PENETRATION TEST
CHUNK SAMPLE
ORIVE SAMPLE (UNDISTURBED)
UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION-ANO AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
>-CD O SOIL
CUSS
(USCS)
TRENCH T 9
ELEV. (MSL.)
EQUIPMENT
155 DATE COMPLETED 11/3/99
TRACKHOE JD 555 24" UJ
gH
IN mg HS tog 111 Tli
Ss
g,
Qi a
u.
u
LU^
as gz *-o
U
- 0 MATERIAL DESCRIPTION
- 2 -
- 4
T9-1
T9-2
ZZZ p m m
.'ir
:-i-.>3
ML
SM
TOPSOIL
Stiff, diy, moderate yeUowish brown, SILT.
abundant rootiets
SANTIAGO FORMATION
Medium dense, dry. yeUowiish gray, fine, SUty
SANDSTONE. sUghtiy weatiiered, random
fractures less than 2" apart, carbonate lined
-Horizontal contact at 3 feet
-Becomes vety pale orange, SUty, fine to medium
SANDSTONE
TRENCH TERMINATED AT 5 FEET
Figure A-64, Log of Trench T 9 LCG
SAMPLE SYMBOLS • SAMPLING UMSUCCESSFUL B
@ ... DISTURBED OR BAG SAMPLE B
STANDARD PENETRATION TEST • ... ORIVE SAMPLE (UNDISTURBED)
CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
OEPTH
IN
FEET
SAMPLE
MO.
SOIL
CUSS
(USCS)
TRENCH T 10
ELEV. (MSL.) 260
EQUIPMENT
DATE COMPLETED 11/3/99
TRACKHOE JD 555 24"
• ixi'
(i,Oi^
H . gu^ go
ujc5
gz *-o u
MATERL\L DESCRIPTION
2 -
4
6
TlO-1
SC
ML/SM
TOPSOIL/COLLUVIUM
Stiff, moderate yellowish brown. Clayey, fine to
metUum SAND
SANTIACK) FORMATION
Stiff, dty to damp, fine, Sandy SBLTSTONE/SUty
SANDSTONE, upper 6" cemented and fossUiferous;
untkrlain by 6" thick, dark yeUowish orange, bed
dipping approx. N-S/5W, beds below are very pale
orange and between 6" and 1' thick, moderately
wea^ered, soU carbonate
TRENCH TERMINATED AT 8 FEET
Figure A-65, Log of Trench T 10 LCG
SAMPLE SYMBOLS ° '"""'^'^ UNSUCCESSFUL
^ ... DISTURBED OR BAG SAMPLE
B.
B.
. STANDARD PENETRATION TEST 1 ... DRIVE SAMPLE (UNDISTURBED) 1
. CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> tD O -i O X
SOIL
CUSS
(USCS)
TRENCH T 11
ELEV. (MSL.) 225
EQUIPMENT
DATE COMPLETED 11/3/99
TRACKHOE JD 555 24"
gH
IN wg
HS
tog
Ss
gu^
gd
>-5;
Qi
°Z
u
- 0 MATERIAL DESCRIPTION
- 2 -
- 4 -
- 6 -
8 -
10 -
12
SC TOPSOIL
Stiff, dty, moderate yellowish brown. Clayey, fine
to medium SAND
ML/CL
A
•tv
•(•5-•;•]•
yy.
y\'. •l-J-
• *]•
SANTIAGO FORMATION
Stiff, damp, Ught olive gray,
SILTSTONE/CLAYSTONE, highly weatiiered,
grades downward to fine, SUty SAND below 4 feet
-Bedding plane/contact stained dark yeUowish
.<)range_^p^^rox. N45W/15SW^ _
MetUum dense, dry, very pale orange, fine to
medium SUty SANDSTONE
y
SM
-Beddmg plane dips paraUel to above
TRENCH TERMINATED AT 12 FEET
Figure A-66, Log of Tren(:h T 11 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST 1 ... DRIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER-LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> CD O _l O X H H
SOIL
CUSS
(USCS)
TRENCH T 12
ELEV. (MSL.) 165
EQUIPMENT
DATE COMPLETED
TRACKHOE JD 555 24"
11/3/99
tUI' Ot
hiiio
UJ^CQ
>-
gu.
gci
5-5;
Qi^
ag
o^
u
- 0 MATERIAL DESCRIPTION
2 -
- 4
- 6 -
8 -
- 10 -
- 12
yy
^A
ML/CL
COLLUVIUM
Stiff, dty, brownish black, SILT/CLAY, abundant
rootiets below 3 feet, abuntiant soU carbonate,
becomes dusky yellow, "punky", fransitioning to
formational below 5 feet
SANTIACK) FORMATION
Stiff, dry to damp, light olive gray, Sandy
SILTSTONE, massive, scattered, random,
discontinuous closed joints
ML
TRENCH TERMINATED AT 12 FEET
Figure A-67, Log of Trench T 12 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . ORIVE SAMPLE (UNDISTURBED)
S ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IM
FEET
SAMPLE
NO.
> CD O -I O X
SOIL
CUSS
(USCS)
TRENCH T 13
ELEV. (MSL.) 140
EQUIPMENT
DATE COMPLETED 11/3/99
TRACKHOE JD 555 24"
jUJ'
o.
gtog
Q.Q5s^
z*-
UJ,
a
UJ-5
Oi
to hi
- 0 MATEIUAL DESCRIPTION
h 2 -
4 -
6 -
8 -
CL/ML
CL
COLLUVIUM
Stiff, dry, brownish black, SELT/CIAY, fine roots
-Becomes dusky yellow, "punlq^", abundant soU
carbonate
SANTIACK) FORMATION
Stiff, thy to damp, light olive gray (mottied dark
yeUowish orange to 7 feet) Sandy ClAYSTONE,
massive, scattered, random, discontinuous closed
joints
TRENCH TERMINATED AT 9 FEET
Figure A-68, Log of Trench T 13 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATIOM TEST • .. . ORIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE z.. . WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
TRENCH T 14
ELEV. (MSL.).
EQUIPMENT
95 DATE COMPLETED 11/3/99
TRACKHOE JD 555 24"
?UJ'
H<«3
hiiia
UJ^CQ QiS
u.
u
ol
ujc5
Qi
to LU
•O U
MATERIAL DESCRIPTION
COULUYOm
Stiff, dty to damp, dark yellowish brown, Sandy
SILT/CLAY
-Becomes moist, metUum stiff
Wet, soft
-Becomes saturated, very soft
SANTIACK) FORMATION
Firm, wet to samrated, pale olive CLAYSTONE
highly weathered, "punky" y TRENCH TERMINATED AT 13 FEET
STANDING WATER AT 13 FEET
CAVING BELOW 8 FEET
Figure A-69, Log of Trench T 14 LCG
SAMPLE SYMBOLS ° """ ""SUCCESSFUL
W ... DISTURBED OR BAG SAMPLE
B...
B...
STANDARD PENETRATION TEST DRIVE SAMPLE (UNDISTURBED)
CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
>-CD O _l O X
SOIL
CUSS
(USCS)
TRENCH T 15
ELEV, (MSL.) 115
EQUIPMENT
DATE COMPLETED 11/3/99
TRACKHOE JD 555 24"
SUJ'^ SgH
t|V:
nas
zgS
guI gd
>5;
Qi^
s-
a| gz *-o
U
- 0 MATERML DESCRIPTION
2 -
4 -
- 6 -
CL
m
mi
m
.-v-3-.r
COLLUVIUM
Stiff, humid, dark gray-brown, Sandy CIAY, wifli
some sUt
-Very moist, soft, with discontinuous slickensided
clay seams inclined out-of-slope 10 - 20 tiegrees
witii calcium carbonate
SM SANTIACK) FORMATION
Very dense, damp, light tan-brown, SUty, fine
SANDSTONE
-Bedding lammated, 2-4" beds at N30W. lOSW
TRENCH TERMINATED AT 7.5 FEET
Figure A-70, Log of Trench T 15 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . ORIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
5-CD O -I
o
X
SOIL
CUSS
(USCS)
TRENCH T 16
ELEV. (MSL.) 120
EQUIPMENT
DATE COMPLETED 11/3/99
TRACKHOE JD 555 24"
og^
^|N
ySg
H' (O,
UJ,
5-5; oe^
LU
MATEIUAL DESCRIPTION
- 2 -
4 -
- 6 -
CL TOPSOIL
Stiff, humid, dark gray-brown, Sandy CIAY
CL
SP
SANTIACK) FORMATION
Very stiff, moist, olive-brown, very SUty
CLAYSTONE
-Becomes hard
-Near-hqmontal OTntact
Dense, damp, light tan, fine SANDSTONE,
non-cohesive when tUsturbed
-Slightly cemented y
TRENCH TERMINATED AT 9 FEET
Figure A-71, Log of Trench T 16 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED) I SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL
@ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE [
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS MOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
tD a -J o X I-H
SOIL
CUSS
(USCS)
TRENCH T 17
ELEV. (MSL.) 135
EQUIPMENT
DATE COMPLETED 11/3/99
TRACKHOE JD 555 24"
:UI'
HS
UJ •a=
Ss
to,
a
s-
a2 gz *-o u MATERIAL DESCRIPTION
2 -
- 4 -
- 6 -
- 8 -
CL
COLLUVIUM
Soft to stiff, moist, tlark brown, Sandy CIAY
-With some sUt
-Becomes vety moist
ML/CL
SANTIACK) FORMATION
Vety stiff to hard, moist, olive-brown, veiy
Clayey SILTSTONE, moderately weafliered and
fractured, blocky
-Beddmg N-S, IOW (hematitic layer)
TRENCH TERMINATED AT 9 FEET
Figure A-72, Log of Trench T 17 LCG
SAMPLE SYMBOLS n ... SAMPLING UMSUCCESSFUL B. . STANDARD PENETRATION TEST 1... ORIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z... WATER TABLE OR SEEPAGE
MOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO. >• CD O _i O X H H
SOIL
CUSS
(USCS)
TRENCH T 18
ELEV. (MSL.) 145
EQUIPMENT
DATE COMPLETED 11/4/99
TRACKHOE JD 555 24"
Sg'
H^H
gojg
H
to
UJ
a
Qi a
ui^ Qi^
«iS °^ =o u
- 0 MATERIAL DESCRIPTION
- 2 -
4 -
- 6 -
CL TOPSOIL
Stiff, humid, dark brown, Sandy CIAY
SANTIACK) FORMATION
Hard, damp, olive-gray, Silty CLAYSTONE
-Massive, with blocky fractures
CL
TRENCH TERMINATED AT 7 FEET
Figure A-73, Log of Trench T 18 LCG
SAMPLE SYMBOLS n ... SAMPLING UNSUCCESSFUL B. .. STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B. .. CHUNK SAMPLE z. . UATER TABLE OR SEEPAGE i
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
tD O _J O X H
SOIL
CUSS
(USCS)
TRENCH T18
ELEV. (MSL.) 145
EQUIPMENT
DATE COMPLETED 11/4/99
TRACKHOE JD 555 24"
;UJ' Ot
to
UJ fWlU
>
gu!
LU,;
a
iuc5
h
<Om •o
u - 0
- 2
- 4
MATERLAL DESCRIPTION
6 -
CL TOPSOIL
Stiff, humid, dark brown, Sandy CIAY
SANTIACK) FORMATION
Hard, damp, oUve-gray, SUty CZIAYSTONE
-Massive, with blocky fractures
CL
TRENCH TERMINATED AT 7 FEET
Figure A-73, Log of Trench T 18 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STAMDARD PENETRATION TEST • . . ORIVE SAMPLE (UNDISTURBED)
S ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AMD AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
MO.
SOIL
CUSS
(USCS)
TRENCH T 19
ELEV. (MSL.) 160
EQUIPMENT
DATE COMPLETED 11/4/99
TRACKHOE JD 555 24"
H
;UJ' o,
su.
iiir^#->
gu^
gd
>-b
oe
a
UJ5
Pi_
to lU
•o u
MATERLVL DESCRIPTION
- 2 -
- 4
8 -
CL
COLLUVIUM
Soft to stiff, vety moist, dark brown Sandy CLAY,
with fiiscontinuous random slickensided soU
firactures; (tipping 30-45 degrees out-of-slope
(slope creep?)
CL V
-1-2' transition to massive, approx. horizontal
contact
SANTIACK) FORMATION
Stiff to very stiff, very moist, olive brown, Sandy
ClAYSTONE
-Very weafliered and fractured
TRENCH TERMINATED AT 9 FEET
Figure A-74, Log of Trench T 19 LCG
SAMPLE SYMBOLS ° '"" '""'"•"'^ "N^"«='=^^^^"^
^ ... DISTURBED OR BAG SAMPLE
B.
B.
. STANDARD PENETRATIOM TEST M ... ORIVE SAMPLE (UNDISTURBED) 1
. CHUNK SAMPLE Z ... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECTNO. 06403-12-01
OEPTH
IN
FEET
SAMPLE
MO.
>-CD O _1
o
X
SOIL
CUSS
(USCS)
TRENCH T20
ELEV. (MSL.) 160
EQUIPMENT
DATE COMPLETED 11/4/99
TRACKHOE JD 555 24"
^;Ul'^
^|N
nas
z«3
>-
H-
Z^
UJr;
a
s-
a| gz ^o u
- 0 MATERL\L DESCRIPTION
2 -
6 -
8 -
COLLUVIUM
Stiff, moist, dark brown, Sandy CLAY
CL
CL
\
-Becomes soft, very moist
-6-12" ttansition to irregular, near-horizontal
contact
SANTIACK) FORMATION
Very stiff, very moist, olive brown, Silty
ClAYSTONE (very weadiered)
TRENCH TERMINATED AT 9.5 FEET
Figure A-75, Log of Trench T 20 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATIOM TEST • . . ORIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
TRENCH T21
ELEV. (MSL.) 117
EQUIPMENT
DATE COMPLETED 11/4/99
TRACKHOE JD 555 24"
gH
|N «g
HS
tog
111 si
Ss
H'
gL
UJ,
>-b oe
s-
al
•o
CJ MATEIUAL DESCRIPTION
COLLUVIUM
Stiff, moist, dark gray-brown, SUty CIAY, with
some sand
-Becomes soft
-Irregular contact
SANTIAGO FORMATION
Stiff to vety stiff, moist, light olive to brown, vety
Clayey SILTSTONE to ClAYSTONE
-Vety weathered
TRENCH TERMINATED AT 10 FEET
Figure A-76, Log of Trench T 21 LCG
SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B
^ ... DISTURBED OR BAG SAMPLE B
STANDARD PENETRATION TEST ORIVE SAMPLE (UNDISTURBED)
CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS AND TIMES.
I
PROJECTNO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
SOIL
CUSS
(USCS)
TRENCH T22
ELEV, (MSL.) 113
EQUIPMENT
DATE COMPLETED 11/4/99
TRACKHOE JD 555 24"
Sg'
0)9 iUJ;
Ul
UJ^CQ
gu:
go
>-<^
oe^
s-
?H
gz *-o u
- 0 MATERIAL DESCRIPTION
2 -
(- 4 _
6 -
8 -
;- 10
il,
16 -
18
CL
CL-ML
ALLUVIUM
Stiff to vety stiff, damp, dark gray-brown, Sandy
CIAY, with some sUt, root-voids, rootiets,
burrows
-Becomes massive
-Becomes very stiff, moist, medium brown-olive,
very SUty CLAY, wifli littie root-voids, burrows
-Massive
TERRACE DEPOSIT
Very stiff, moist to wet Ught olive to brown, very
SUty CLAY to Clayey SILT
-Seepage at 15.5 feet
TRENCH TERMINATED AT 18 FEET
Figure A-77, Log of Trench T 22 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B ,
^ ... DISTURBED OR BAG SAMPLE B ,
STANDARD PENETRATION TEST DRIVE SAMPLE (UNDISTURBED)
CHUNK SAMPLE Z ... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATIOM AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IM
FEET
SAMPLE
NO.
C9
SOIL
CUSS
(USCS)
TRENCH T 23
ELEV. (MSL.) 105
EQUIPMENT
DATE COMPLETED 11/4/99
TRACKHOE JD 555 24"
H
;uj'
Ov
UJ •H-to< iUJ;
to
UJ^CQ
O^Oii^
gu^
gci
>-5;
Qi
UJ_
gz *-o u
MATERL\L DESCRIPTION
- 2 -
- 4 -
6 -
8 -
10 -
12 -
14 -
- 16 -
T23-1
T23-2
CL
SM
CL
ALLUVIUM
Stiff to vety stiff, humid, dark gray-brown, Sandy
CLAY
-Numerous root-voitis, rootlets, massive
114.3 10.8
TERRACE DEPOSIT
Medium dense, damp, brown-olive, very Silty, fine
SAND, with some clay, massive, blocky
Very stiff, moist, light reddish-brown, very
Silty/Sandy CLAY
-Becomes massive
-Strong water seepage
TRENCH TERMINATED AT 17.5 FEET
Figure A-78, Log of Trench T 23 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B
@ ... DISTURBED OR BAG SAMPLE B
STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
CHUNK SAMPLE Z ... WATER TABLE OR SEEPAGE 1
J
I
I
MOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
SOIL
CUSS
(USCS)
TRENCH T24
ELEV. (MSL.) 126
EQUIPMENT
DATE COMPLETED 11/4/99
TRACKHOE JD 555 24"
Ori •
Hg
tog
Ss
Ul
UJ Q.'
gu^
go
Qi^
s-
gz ^o u
- 0 MATERL\L DESCRIPTION
I- 2 -
4 -
6 -
8 -
10 -
12 -
h 14 -
CL TOPSOIL
Stiff, humid, dark gray-brown, Sandy CIAY
SC
TERRACIE DEPOSIT
Medium dense, damp, light redtiish-brown.
Clayey, fine SAND
-Calcium carbonate linings
-Massive with intUstinct lenses of sandy or sUty
clay, numerous root-voids and calcium
carbonate-lined fractures, scattered caibon
fragments and pisolites of iron oxitle
112.5 7.9
116.3 11.5
-Calcium caibonate linings
TRENCH TERMINATED AT 15 FEET
Figure A-79, Log of Trench T 24 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST ORIVE SAMPLE (UNDISTURBED)
@ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE z... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AHO AT THE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
TRENCH T25
ELEV. (MSL.) 137
EQUIPMENT
DATE COMPLETED 11/4/99
TRACKHOE JD 555 24"
^ui^
0) H; to* • UJ;
to
ui^ta
H': gu^
gd
>5;
Qi^
s-
a| gz *-o u
MATERIAL DESCRIPTION
COLLUVIUM
Very stiff, damp to moist, dark gray-brown, Sandy
CLAY
-Massive, with root-voids, rootiets
TERRACE DEPOSIT
Very stiff, moist to very moist, light brown, Sandy
CIAY
-Massive, with root-voids
-Irregular, near-horizontal contact
SANTIACK) FORMATION
Stiff to very stiff, moist, light olive, very SUty
CLAYSTONE
-Very fractured and weathered
TRENCH TERMINATED AT 14 FEET
Figure A-80, Log of Trench T 25 -LCG
SAMPLE SYMBOLS ° - ^'^'^'''^ ""SUCCESSFUL E... STANDARD PENETRATION TEST 1 ... DRIVE SAMPLE (UNDISTURBED) i
^ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE f
I
I
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
>-tD O _l O X
I-
H
SOIL
CUSS
(USCS)
TRENCH T26
ELEV. (MSL.) 137
EQUIPMENT
DATE COMPLETED 11/4/99
TRACKHOE JD 555 24"
Suj'^
to pto
UJUO
UJ^CQ
Q.Q=>.^
H'
CO,
UJr
a
UJ5 Qi
Pi_
to LtJ
•O U
- 0 MATERIAL DESCRIPTION
- 2 -
- 4 -
- 6 -
- 8
- 10 -
12 -
- 14
ALLUVIUM
Stiff, moist, dark olive-brown, Sandy CIAY, with
some sUt, root-voids and rootiets
CL
TERRACE DEPOSIT
Stiff to very stiff, moist, light brown, very Sandy
CLAY
CL
TRENCH TERMINATED AT 14 FEET
Figure A-81, Log of Trench T 26 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
TRENCH T27
ELEV. (MSL.) 146
EQUIPMENT
DATE COMPLETED 11/5/99
TRACKHOE JD 555 24"
;LU'
H«l-
UJ^O
zf3_i
gu^
gci
5-5;
Qi
a
uj^5
Di
Pl_
LU
•O U
MATERIAL DESCRIPTION
TOPSOIL
Stiff, humid, dark gray-brown, Sandy CLAY
TERRACE DEPOSIT
Medium dense, damp, reddish-brown, very Clayey,
fine SAND, massive, blocky, with calcium
carbonate, mottiing
.-Sheareti.beddin^ cla3r.wam^ N30W,_25SW
Soft to stiff, very moist, light olive, SUty plastic
CLAY
-Numerous, jUckensided seams, yerjr fra:tured
Medium dense, damp, light brown, very Clayey,
very fine SAND
-Massive, blocky, with 1/4"-I— charcoal fragments,
with some silt
TRENCH TERMINATED AT 11 FEET
108.2 19.8
Figure A-82, Log of Trench T 27 LCG 1
SAMPLE SYMBOLS ° '"" UNSUCCESSFUL
^ ... DISTURBED OR BAG SAMPLE
B ... STANOARD PENETRATION TEST
B ... CHUNK SAMPLE
• DRIVE SAMPLE (UNDISTURBED)
Z ... WATER TABLE OR SEEPAGE |
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
I
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> tD O _1 O X H H
SOIL
CUSS
(USCS)
TRENCH T28
ELEV. (MSL.) 93
EQUIPMENT
DATE COMPLETED 11/5/99
TRACKHOE JD 555 24"
SUJ'^ SgH
!E|H:
UJ H?
to'
uj^m
Q.QS\^
gu^ gd
5-5;
Qi
a
ag
gz
^O
u - 0 MATERIAL DESCRIPTION
- 2 -
4 -
- 6 -
- 8 -
10
- 12 -
14 -
16
.1-.
5M-GM
CL
SM
FILL
Loose, dry to humid, light brown, SUty, GraveUy,
fme SAND, with oversize concrete, wood, trash
ALLUVIUM
Stiff, moist, dark gray-brown, Sandy CIAY
-Massive, with root-voids, rootiets
TERRACE DEPOSIT
MetUum dense, moist, light brown. SUty, fine
SAND
-Very weathered, witii some clay
-Becomes very dense, damp, and cemented
TRENCH TERMINATED AT 16 FEET
Figure A-83, Log of Trench T 28 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . .. ORIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. .. UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATIOM ANO AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
SOIL
CUSS
(USCS)
TRENCH T29
ELEV. (MSL.) 90
EQUIPMENT
DATE COMPLETED 11/5/99
TRACKHOE JD 555 24"
!E|^
ujbo
gL
Qi a
s-
u
I
I
MATEIUAL DESCRIPTION
4 -
6 -
8 -
10 -
12 -
h 14 -
COLLUVIUM
Stiff, damp, dark gray-brown, Sandy CIAY
-Massive, with root-voitis and rootiets
CL
SC
SM
TERRACE DEPOSIT
Medium dense, damp, reddish-brown to olive.
Clayey, fine SAND
-Becomes darker brown, with roots, root-voids
Medium dense to dense, light brown-tan, SUty,
fine to medium SAND, with some clay, fine
root-voids
TRENCH TERMINATED AT 15 FEET
Figure A-84, Log of Trench T 29 LCG
3 SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B
@ ... DISTURBED OR BAG SAMPLE B
STANDARD PENETRATION TEST
CHUNK SAMPLE
DRIVE SAMPLE (UNDISTURBED)
WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. I
I
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
>-CD O SOIL
CUSS
(USCS)
TRENCH T30
ELEV. (MSL.) 120
EQUIPMENT
DATE COMPLETED 11/5/99
TRACKHOE JD 555 24"
iUJ'
UJ
to H to ;uj;
to
uj^aa
H' gL
UJ,
a
a| gz *-o u
- 0
- 2
MATEIUAL DESCRIPTION
* 4 * < •m m
• 4 • 1
m
SM
SANTIACK) FORMATION
Very dense, damp, Ught brown-tan, SUty, medium
to coarse SANDSTONE
-Massive
TRENCH TERMINATED AT 3.5 FEET
Figure A-85, Log of Trench T 30 LCG
SAMPLE SYMBOLS ° '"" '^"'""^ UNSUCCESSFUL
^ ... DISTURBED OR BAG SAMPLE
B.
B.
. STANDARD PENETRATION TEST • ... ORIVE SAMPLE (UNDISTURBED)
. CHUNK SAMPLE Z ... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWM HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
SOIL
CUSS
(USCS)
TRENCH T31
115 ELEV. (MSL.).
EQUIPMENT
DATE COMPLETED 11/5/99
TRACKHOE JD 555 24"
Ori • Hyt-
:to to
a.Q^s^
gu^
gd
5-5; Qi^ a
UJ-5
p
a|
gz
u
MATERL\L DESCRIPTION
2 -
4 -
- 6
CL
SM
COLLUVIUM
Stiff, moist, dark gray-brown, Sandy CIAY, with
root-voids, rootiets, burrows
-Becomes soft, veiy moist
-Iiregular, N-inclined contact
SANTIACK) FORMATION
Vety dense, danq), light brown to tan, SUty, coarse
SANDSTONE
TRENCH TERMINATED AT 8 FEET
Figure A-86, Log of Trench T 31 LCG
o » »,,T>T T- .^^r c n ... SAMPL IMG UNSUCCESSFUL SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE
B ... STANDARD PENETRATION TEST
B... CHUNK SAMPLE
• ... DRIVE SAMPLE (UNDISTURBED) 1
Z ... UATER TABLE OR SEEPAGE [
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS ANO TIMES. I
I
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> CD O _l O
I H H
SOIL
CLASS
(USCS)
TRENCH T 32
ELEV. (MSL.)
EQUIPMENT
80 DATE COMPLETED 11/5/99
TRACKHOE JD 555 24"
;UJ'
=a-
UJ; UJ iv^BJ
H
to Z' UJ
o
>5 Qi a
u. s-
a| gz *-o u
- 0 MATERLAL DESCRIPTION
- 2 -
4 -
- 6 -
- 8 -
10 -
12 -
14 -
16
ALLUVIUM
Stiff, moist, dark gray-brown, Sandy CIAY
-Massive, with rootiets, root-voids
CL
SC
MetUum dense, very moist, reddish-brown, very
Clayey, metUtun SAND, with scattered angular
volcanic gravel-clasts near base
-Strong seepage at 14 feet, becomes gravelly
iL,
TRENCH TERMINATED AT 16 FEET
Figure A-87, Log of Trench T 32 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B ... STANOARD PENETRATION TEST I ... ORIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
SOIL
CUSS
(USCS)
TRENCH T33
ELEV. (MSL.) 90
EQUIPMENT
DATE COMPLETED 11/5/99
TRACKHOE JD 555 24"
;UJ' o.
to to
UJ»P
UJ
!tO' UJ tsS
gu^ go
Qi
UJ-5
P
wg
gz
CJ
MATERIAL DESCRIPTION
- 2 -
4 -
6 -
8 -
CL
SM
COLLUVIUM
Stiff, humid to damp, dark gray-brown. Sandy
CIAY, with scattered angular volcanic
gravel-clasts
SANTIACK) FORMATION
Vety dense, damp, Ught brown to tan, SUty,
medium SANDSTONE
-Massive to faint betiding layers
-Bedding; N50W, lOSW
TRENCH TERMINATED AT 9 FEET
Figure A-88, Log of Trench T 33 LCG
SAMPLE SYMBOLS ° "'' ^^"^""^ UNSUCCESSFUL
^ ... DISTURBED OR BAG SAMPLE
B... STANDARD PENETRATION TEST
B ... CHUNK SAMPLE
1... DRIVE SAMPLE (UNDISTURBED)
Z ... WATER TABLE OR SEEPAGE [ f NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. I
I
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
>• CD O
X H H
SOIL
CUSS
(USCS)
TRENCH T34
ELEV. (MSL.) 105
EQUIPMENT
DATE COMPLETED 11/5/99
TRACKHOE JD 555 24"
Sg'
H«3
Z«3
gl
UJ,
5-5;
Q
s^
ag
=i
u MATERIAL DESC^UPTION
- 2 -
- 4 -
6 -
- 8 -
- 10
- 12 H
- 14 -
CL
V
SC
ALLUVIUM
Stiff to vety stiff, danm, dark gray-brown, Sandy
CIAY
-Massive, root-voitls and rootiets
-Becomes more sandy, moist, brown
TERRACE DEPOSrr
MetUum dense, moist, reddish-brown, very Qayey,
metUum to coarse SAND
-Becomes graveUy at 14 feet, with subangular
volcanic rock
TRENCH TERMINATED AT 15 FEET
REFUSAL ON ROCK
Figure A-89, Log of Trench T 34 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B ... STANDARD PENETRATION TEST DRIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE z... UATER TABLE OR SEEPAGE
MOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAM>LE
NO.
> tD O -I O
H -I
SOIL
CUSS
(USCS)
TRENCH T35
ELEV. (MSL.) 120
EQUIPMENT
DATE COMPLETED 11/5/99
TRACKHOE JD 555 24"
Qi
z«3
Q.Q^V^
gu^
ujf;
a
MATEIUAL DESCRIPTION
2 -
- 4 -
6 -
8 -
10 -
12
h 14 -I
m m
• • 4 » H
m
mi
.-u-J-.f.
.•v-i*.r
:f::-l m m m
TOPSOIL
Stiff, dry, daric brown, Sandy CLAY
SANTIACK) FORMATION
Firm or vety stiff, damp, Ught oUve, vety SUty
CLAYSTONE
-Massive, highly fractured ^d weafliered
m
CL
-Randomly oriented, discontmuous clay seams
-Contact near-horizontal
SM Veiy dense, damp, light brown, SUty, fine
SANDSTONE
TRENCH TERMINATED AT 15 FEET
Figure A-90, Log of Treuch T 35 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B ... STANOARO PENETRATION
^ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE
TEST • ... ORIVE SAMPLE (UNDISTURBED)
Z ... UATER TABLE OR SEEPAGE !
NOTE: THE LOG OF SUBSURFACE CQNDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES. I
I
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> tD O SOIL
CUSS
(USCS)
TRENCH T36
ELEV. (MSL.) 175
EQUIPMENT
DATE COMPLETED 11/5/99
TRACKHOE JD 555 24"
Ori • HyK-
H?U.
hiiia
uj^m
>
gu^
gd
>S; Qi
s-
ag gz *-o u
MATEIUAL DESCRIPTION
- 2 -
- 4 -
6 -
8
sc
ML
TOPSOIL
Loose, damp, dark brown, Qayey. medium SAND
_^ -Qean sand near contact
SANTIACK) FORMATION
Vety stiff, firm, moist, retldish-brown to olive,
very Clayey SILTSTONE
-Vety fiactured and weathered, with shaUow
creep-fracmres and surficial sluiiq)s
-Bedding near-horizontal
-Becomes Vety hard, moist, light olive
\ -Blocky, massive
TRENCH TERMINATED AT 8 FEET
Figure A-91, Log of Trench T 36 LCG
SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B ... STAMDARD PENETRATION TEST DRIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
OEPTH
IN
FEET
SAMPLE
NO.
5-CD O -J O X
I-
H
SOIL
CUSS
(USCS)
TRENCH T37
ELEV. (MSL.) 140
EQUIPMENT
DATE COMPLETED 11/5/99
TRACKHOE JD 555 24"
;LiJ'
:to !H, to* uJ;
:U. H' (O,
UJ,
5-5; Oi^ a
Qi^
as
•o
u - 0 MATERLAL DESCRIPTION
I- 4 -
6 -
8 -
10 -
COLLUVIUM
Stiff, moist, dark gray-brown, Sandy CLAY
CL
SC
SM
V
TERRACE DEPOSIT
Medium dense, moist, reddish-brown, very Clayey,
medium to coarse SAND
-Massive, blocky, with angular gravel-clasts of
volcanic rock at base
-Deposition-contact; N80E, 20S
SANHACK) FORMATION
Dense, damp, light brown-tan, Silty, coarse
SANDSTONE, massive
TRENCH TERMINATED AT 11 FEET
Figure A-92, Log of Trench T 37 LCG
SAMPLE SYMBOLS ° """ ""SUCCESSFUL
^ ... DISTURBED OR BAG SAMPLE
B.
B.
. STANOARD PENETRATION TEST 1... ORIVE SAMPLE (UNDISTURBED)
. CHUNK SAMPLE ? • • - WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT TKE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO. >• tD O -J O X
SOIL
CUSS
(USCS)
TRENCH T38
ELEV. (MSL.) 125
EQUIPMENT
DATE COMPLETED 11/8/99
TRACKHOE JD 555 24"
H
;UJ' O.
^feg uiiio
a."i\.^
H'^ gu^
gci
5-°-«"'
ir\
ui^5
Pl_
to UJ
•o u
- 0 MATERLVL DESCRIPTION
- 2 -
- 4 -
- 6 -
8 -
[i h 10 -
12 -
14 -
COLLUVIUM/LANDSLIDE DEBRK
Stiff, moist, dark brown, Sandy CIAY, with clasts
of santlstone, porous, with root-voids
CL
-Very irregular, transitional contact, becoming
very moist
-Becomes soft, very moist, mottied light brown to
olive, very Sandy CIAY, with angular chunks of
Santiago formation, sandstone; disturbed, mixed
textures
-Very irregular, wet, plastic, clay seam
CL SANTIACK) FORMATION
Stiff, very moist, light olive. SUty CLAYSTONE
-Very weathered and fractured
TRENCH TERMINATED AT 15 FEET
Figure A-93, Log of Trench T 38 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST • . . ORIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE z. . UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
>-CD O -J O X
I-
H
SOIL
CLASS
(USCS)
TRENCH T39
ELEV. (MSL.) 120
EQUIPMENT
DATE COMPLETED 11/8/99
TRACKHOE JD 555 24"
^|N
H .
guI ^o
5-5; Oi^ a
s-
a| gz *-o tJ
MATERIAL DESCRIPTION
- 2 -
4 -
- 6 -
- 8 -
10 -
CL
CL-CH
LANDSLIDE DEBRIS
Stiff, dan^, dark gray-brown, Sandy CIAY
-Porous, with rootiets, root-voids
-Irregular contact
-Becomes soft, wet, reddish-brown,
Sandy-GraveUy CLAY, with tUstuibed texmre
(brecciated)
-Sttong seepage
-Very irregular, plastic clay seam contact (caving)
SANTIACK) FORMATION
Stiff, veiy moist, light olive, SUty ClAYSTONE
-Very fracmred and weathered
TRENCH TERMINATED AT 11 FEET
Figure A-94, Log of Trench T 39 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS . STANDARD PENETRATION TEST SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
TRENCH T 40
ELEV. (MSL.) 155
EQUIPMENT
DATE COMPLETED 11/8/99
TRACKHOE JD 555 24"
zH
IN wg
HS
tog
hiTS
Ss
gtjl
go
5-5;
Q:
a
uj^5
Ul
MATERLAL DESCRIPTION
TOPSOIL
Lt)ose, damp, dark brown. Clayey. metUum SAND
TERRACE DEPOSIT
MetUum dense, damp, reddish-brown. Gravelly,
SUty coarse SAND
-Massive
-Near-horizontal depositional contact
LANDSLIDE DEBRIS
Soft, very moist to wet, light olive-brown, SUty
CIAY
-Dismrbed, with numerous clay seams, chunks of
Santiago fonnation and Jsp
-1-2" remolded clay seam with sUckensides; N85W,
40S
SANTIAGO FORMATION
Stiff, veiy moist, light olive, SUty ClAYSTONE
-Veiy fiactured and weathered
TRENCH TERMINATED AT 13 FEET
Figure A-95, Log of Trench T 40 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST 1 ... DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL
B... ^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
OEPTH
IN
FEET
SAMPLE
NO.
> CD O -I O X
t-
H
SOIL
CUSS
(USCS)
TRENCH T41
ELEV. (MSL.) 145
EQUIPMENT
DATE COMPLETED 11/8/99
TRACKHOE JD 555 24"
to^
HS
tog Ss
H
to,
Ul
a
li.
u
>-5;
Q:
a
a| gz ^o o
MATERLU. DESCRIPTION
2 -
4 -
6 -
8
10 H
12
GC
LANDSLIDE DEBRIS
Soft, vety moist, light brown to olive, very coarse.
Clayey boulder GRAVEL, wifli subrounded 6 to
24" volcanic boultlers
-Strong seepage
-Very iiregular contact, inclined southward
CL-CH SANTIACK) FORMATION
Stiff, wet, light olive, SUty ClAYSTONE
-Very fracmred, weathered, with clay seams
J
TRENCH TERMINATED AT 12 FEET
Figure A-96, Log of Trench T 41 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B.. . STANDARD PENETRATION TEST DRIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B.. . CHUNK SAMPLE z... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS MOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> tD O -J O X H H
SOIL
CUSS
(USCS)
TRENCH T42
ELEV. (MSL.) 170
EQUIPMENT
DATE COMPLETED 11/8/99
TRACKHOE JD 555 24"
iii-^
gH
IN tHg Hg tog
UJS
Ss
>-
H-
5u:
16
hi,
o' >-5;
UJ
to H^ o^ *-o u
- 0 MATERIAL DESCRIPTION
- 2 -
- 4 -
- 6 -
- 8 -
- 10 -
12
CL LANDSLIDE DEBRIS
Stiff, damp to humid, dark brown, Sandy CIAY
-Becomes soft to stiff, moist, Ught olive mottied
with reddish-brown, SUty CIAY, with scattered
angiUar volcanic clasts, disturbed, brecciated
texture
-Becomes very moist to wet
-Strong seepage, caving
-Remolded clay seam, N85W, IOS, approx. 2" thick
-Becomes stiff, wet, light olive-gray, SUty CIAY
-May be very weathered Santiago Formation (?)
TRENCH TERMINATED AT 12 FEET
Figure A-97, Log of Trench T 42 LCG
SAMPLE SYMBOLS G ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST DRIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE z... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
OEPTH
IN
FEET
SAMPLE
NO.
H
SOIL
CUSS
(USCS)
TRENCH T43
ELEV. (MSL.) 200
EQUIPMENT
DATE COMPLETED 11/8/99
TRACKHOE JD 555 24"
ti'-
=a !to^ • UJ;
'*-v^
H'^
gu^
gd
Q
UJ^5 Qi^
a| gz ^o u
- 0 MATEIUAL DESCRIPTION
2 -
h 4
6
8
CL
CL
COLLUVIUM
Stiff, moist, dark brown, Sandy, Gravelly CLAY,
wifli angular volcanic clasts
-Becomes light olive, very moist, more sUty
-Discontinuous, out-of-slope slickensided clay
seams
V
SANTIAGO FORMATION
Very stiff to hard, moist, light olive-gray, Silty
ClAYSTONE
-Blocky, massive J TRENCH TERMINATED AT 8 FEET
Figure A-98, Log of Trench T 43 LCG
3
I
I
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B
^ ... DISTURBED OR BAG SAMPLE B
STANDARD PENETRATION TEST
CHUNK SAMPLE z...
DRIVE SAMPLE (UNDISTURBED)
UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> CD O -J O X
I-
H
SOIL
CUSS
(USCS)
TRENCH T44
ELEV. (MSL.) 230
EQUIPMENT
DATE COMPLETED 11/8/99
TRACKHOE JD 555 24"
Suj'^
^SN
^S3 g^s
gu^
go
a
s-
H^
a| gz *-o u
- 0 MATEIUAL DESCRIPTION
b 2 -
4 -
6 -
8
CL
COLLUVIUM
Stiff, moist, dark red-brown, vety GraveUy
CIAY, with angular clasts of volcanic rocks
V
-Irregular, downslope-inclined clay seam contact
SANTIAGO PEAK VOLCANICS
Very weathered, light reddish-brown, weak
VOLCANIC ROCK
-Very fiactured. excavates to a clayey sand
TRENCH TERMINATED AT 8 FEET
Figure A-99, Log of Trench T 44 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B ... STANDARD PENETRATION TEST 1 ... DRIVE SANPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01 I
DEPTH
IN
FEET
SAMPLE
NO.
>-CD O
H H
SOIL
CLASS
(USCS)
TRENCH T45
ELEV. (MSL.) 220
EQUIPMENT
DATE COMPLETED 11/8/99
TRACKHOE JD 555 24"
Sg'
HgK
5:<n E«g
|ss
Hf to' iUJ;
gu^ gd
5-i oe^ a
UJ-5
Qi
to LU
EZ ^o
- 0 MATERLAL DESCRIPTION
- 2 -
- 4
6 -
- 8 -
- 10 -
12 -
CL
CL-ML
A
•:f::-t:
• * J • •
:-t-::f:
-.r.i.-K
SM
COLLUVIUM
Stiff, damp, dark brown, Sandy CIAY
SANTIACK) FORMATION
Hard, damp, light olive to tan. Clayey SILTSTONE
to SUty ClAYSTONE
-Laminated beds - 1/2-2" tiuck
Very dense, damp, light tan to reddish-brown,
SUty, metUum to coarse SANDSTONE, massive
TRENCH TERMINATED AT 13 FEET
Figure A-lOO, Log of Trench T 45 LCG
1 SAMPLE SYMBOLS n ... SAMPLING UNSUCCESSFUL B ... STANDARD PENETRATION TEST I
^ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE Z
,. DRIVE SAMPLE (UNDISTURBED)
,. WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. I
I
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
>-tD O -J O X
I—
H
SOIL
CLASS
(USCS)
TRENCH T46
ELEV. (MSL.) 215
EQUIPMENT
DATE COMPLETED 11/8/99
TRACKHOE JD 555 24"
to to
^§3 g^s
H .
Z^ gd
>-5;
Q!^
a
g6
ag gz *-o
U
h 0 MATERIAL DESCRIPTION
4 -
6 -
CL TOPSOIL
Stiff, damp, daric brown, Sandy CLAY
SANTIACK) FORMATION
Veiy stiff, moist, Ught olive, SUty ClAYSTONE,
very weafliered, fractured, with random clay seams
CL
TRENCH TERMINATED AT 7 FEET
Figure A-101, Log of Trench T 46 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED)
@ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATIOM ANO AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IM
FEET
SAMPLE
NO.
> tD O -I O X
SOIL
CLASS
(USCS)
TRENCH T47
ELEV. (MSL,) 207
EQUIPMENT
DATE COMPLETED 11/8/99
TRACKHOE JD 555 24"
^^IN
UJ to' ui^a
H' (O,
a
ui^5 Qi
Pl-
UJ
•o u
- 0 MATEIUAL DESCRIPTION
2 -
- 4 -
6 -
COULUVIUM
Stiff, moist, dark brown, Sandy CIAY
CL
CL SANTIAC30 FORMATION
Stiff to vety stiff, very moist, light olive, SUty
ClAYSTONE y
TRENCH TERMINATED AT 7 FEET
Figure A-102, Log of Trench T 47 LCG
SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST I
^ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE Z
DRIVE SAMPLE (UNDISTURBED)
WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
3-
CO o _l o
X
SOIL
CUSS
(USCS)
TRENCH T48
ELEV. (MSL.) 175
EQinPMENT
DATE COMPLETED
TRACKHOE JD 555 24"
11/8/99
Ori • Hyi-HSU. <E£\
UJ
UJ^CQ
H . guI
gci
5-e Qi
Ui
ag gz ^o u
MATERIAL DESCRIPTION
i
I'
- 4
CL
TOPSOIL
Stiff, humid, dark brown, Sandy CIAY
SANTIACK) PEAK VOLCAMCS
Vety weathered, firactured, light red-brown, weak
VOLCANIC ROCK y
TRENCH TERMINATED AT 5 FEET
Figure A-103, Log of Trench T 48 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> tD O -I
o
X
SOIL
CUSS
(USCS)
TRENCH T49
ELEV. (MSL.) 200
EQUIPMENT
DATE COMPLETED 11/8/99
TRACKHOE JD 555 24"
iUI'
LJ to^ • UJ; hi^a
H'
(Q,
UJ U
Qi a
s-
Hjg
•o u
- 0 MATERIAL DESCRIPTION
h 2 -I
4
6
TOPSOIL
Stiff, damp, daik brown, Sandy CIAY
CL
SM
CL
SANTIACK) FORMATION
t Dense, damp. Ught red-brown, SUty, coarse
\ SANDSTONE
I. _ _-Ne^-hqriTOnt4. biding
Hard, damp, U^t olive, very SUty ClAYSTONE
-Very fractured and weathered, with calcium
\ carbonate linings
TRENCH TERMINATED AT 7.5 FEET
Figure A-104, Log of Trench T 49 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . ORIVE SAMPLE (UNDISTURBED) | SAMPLE SYMBOLS SAMPLE (UNDISTURBED) |
^ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE t
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
OATE INDICATED. IT IS MOT WARRANTED TO BE REPRESEMTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> CD O -I o X I-
SOIL
CUSS
(USCS)
TRENCH T50
ELEV. (MSL.) 175
EQUIPMENT
DATE COMPLETED 11/8/99
TRACKHOE JD 555 24"
^IN
^foP
UJ UJ;
H'
UJ,
5-S Qi a
g^5
ag gz *-o u
Lo
I'
- 6 -
\-
- 8
MATEIUAL DESCRIPTION
CL TOPSOIL
Stiff, humid to danq>, dark brown, Sandy CIAY
CL
SANTIACK) FORMATION
Hard, damp, medium to dark olive, SUty
CLAYSTONE
-Vety fractured and weathered, massive
TRENCH TERMINATED AT 8 FEET
Figure A-105, Log of Treuch T 50 LCG
SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B
^ ... DISTURBED OR BAG SAMPLE B
.. STANOARD PENETRATION TEST ORIVE SAMPLE (UNDISTURBED)
.. CHUNK SAMPLE Z WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
OEPTH
IN
FEET
SAMPLE
5-U o _l o
X
SOIL
CUSS
(USCS)
TRENCH T51
ELEV. (MSL.) 165
EQUIPMENT
DATE COMPLETED 11/8/99
TRACKHOE JD 555 24"
Lij"^
UJ^O
uj^m
gu^ go
5-5;
Q!
a
ui
Qi p I-to UJ
•o u
- 0 MATERL\L DESCRIPTION
- 2 -
4 -
6 -
CK:
COLLUVIUM
Stiff, very moist, reddish-brown, Qayey GRAVEL
with boulders
-Massive, with mixture of rounded cobbles and
angular boultlers of Jsp (18" +-)
TRENCH TERMINATED AT 7 FEET
REFUSAL
Figure A-106, Log of Trench T 51 1 1 1 1
LCG
SAMPLE SYMBOLS ° ''' UNSUCCESSFUL
^ ... DISTURBED OR BAG SAMPLE
B.
B.
. STANDARD PENETRATION
. CHUNK SAMPLE
TEST 1 .
z.
.. DRIVE SAMPLE (UNDISTURBED)
.. UATER TABLE OR SEEPAGE
MOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> CD O _J
o X H H
SOIL
CUSS
(USCS)
TRENCH T52
ELEV. (MSL.) 137
EQUIPMENT
DATE COMPLETED 11/8/99
TRACKHOE JD 555 24"
S|H
^|N
^S3
gt:
gci
>-5;
Qi Q
UJ
i^ •o u
- 0 MATERIAL DESCRIPTION
- 2 -
- 4
6 -
- 8 -
- 10
- 12 -
- 14 -
'•.'•'a::'::.
JP-GM
'•a'..'.':-!
••'/•:'4
•.is .-v^-
FILL
Loose, humid to damp, Ught brown. GraveUy. fine
SAND with some silt
-Becomes loose, tlamp to moist, light brown, coarse
GRAVEL with oversize boulders > 2' diameter
-Becomes loose, moist, dark brown, Sandy, coarse
GRAVEL, with roots, porous, organic odor, may
be reworked, aUuvium
-Becomes very moist to wet
-Caving from 12 feet
TRENCH TERMINATED AT 15 FEET
Figure A-107, Log of Trench T 52 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATIOM TEST 1 ... DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
SOIL
CUSS
(USCS)
TRENCH T 53
ELEV. (MSL.) 145
EQUIPMENT
DATE COMPLETED 11/8/99
TRACKHOE JD 555 24"
Ori •
H?U.
:to
iuSoQ
H'; gu^
gd
v^
Qi
UJ^J Qi
ag
gz
^O
u MATERIAL DESCRIPTION
2 -
4 -
6 -
8
COLLUVIUM
Stiff, moist, dark brown, Gravelly-Sandy CIAY
CL
CL
SANTIACK) FORMATION
Hard, moist, Ught olive-brown, GraveUy-Sandy
ClAYSTONE, with angular clasts of volcanic
rocks
TRENCH TERMINATED AT 8 FEET
Figure A-108, Log of Trench T 53 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B
^ ... DISTURBED OR BAG SAMPLE B
STANOARD PENETRATION TEST
CHUNK SAMPLE z..
DRIVE SAMPLE (UNDISTURBED)
UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOUM HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
I
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
MO.
>-tD O -I O X
SOIL
CLASS
(USCS)
TRENCH T54
ELEV. (MSL.) 240
EQUIPMENT
DATE COMPLETED 11/8/99
TRACKHOE JD 555 24"
5g'
H^h
^tog
hiiio
UjkjcQ
H .
gu^
gd >°-
Ui^S
Oi
ay
-o u
- 0 MATERLVL DESCRIPTION
2 -
4 -
6 -
SC
V ^
V ^ il ^
V ^ 1 >i ^^
V ^
V^
TOPSOIL
Loose, humid, dark brown, Qayey SAND, some
sUt
SANTIACK) PEAK VOLCANICS
Very weathered and altered, reddish-brown, weak
VOLCANIC ROCK
-Very fractured and hydrothermaUy altered,
excavates to a graveUy, clayey sand
TRENCH TERME^ATED AT 8 FEET
Figure A-109, Log of Trench T 54 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
S ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . UATER TABLE OR SEEPAGE
MOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IM
FEET
SAMPLE
NO.
> tD O .J O X
SOIL
CUSS
(USCS)
TRENCH T55
ELEV. (MSL.) 150
EQUIPMENT
DATE COMPLETED 11/8/99
TRACKHOE JD 555 24"
;ui'
Ot
to'
iUJ;
:U.
hi
Q_"i^
z^ go
Qi
ag
gz
u
MATEIUAL DESCRIPTION
- 2 -
4 -
CL
SM
ALLUVIUM
Stiff, damp, dark brown, veiy Sandy CIAY
_^ -Irregular "v-shape" contact
SANTIAGO FORMATION
Dense, damp, Ught brown-tan, SUty, medium
\ SANDSTONE, massive
TRENCH TERMINATED AT 5 FEET
Figure A-110, Log of Trench T 55 LCG
SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> tD O _J O X
1-
H
SOIL
CLASS
(USCS)
TRENCH T56
ELEV. (MSL.) 185
EQUIPMENT
DATE COMPLETED 11/8/99
TRACKHOE JD 555 24"
\hl.
I-
^'^ tog
HS
tog
UJSO
Q.QS\./
>
gu:
go
UJ
ag gz *-o u
MATERIAL DESCRIPTION
[
t
2 -
4 -
- 6
CL TOPSOIL
Stiff, damp, dark brown, Sandy CIAY
CL
SANTIAGO FORMATION
Very stiff to hard, moist, light oUve, SUty
ClAYSTONE
-Very weathered and fiactured
TRENCH TERMINATED AT 6 FEET
Figure A-lll, Log of Trench T 56 LCG
1
SAMPLESYMBOLS
n ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED) 1
SAMPLESYMBOLS @ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE
MOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> tD O _l O X
I-
H
SOIL
CUSS
(USCS)
TRENCH T57
ELEV. (MSL.) 180
EQUIPMENT
DATE COMPLETED
TRACKHOE JD 555 24"
11/8/99
HS
OS -as ujao
UJ
Q. UJSg
gu^ go
>5;
Qi
a
UJ^ Oi
Pl_
to UJ
•o
u
- 0 MATERIAL DESCRIPTION
- 2 -
4 -
CL TOPSOIL
Stiff, damp, dark brown, Sandy CIAY
m m m
SM SANTIAGO FORMATION
Dense, damp, light olive to tan, SUty, fine
SANDSTONE, wifli some clay
TRENCH TERMINATED AT 5 FEET
Figure A-112, Log of Trench T 57 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> CD O -I
o X H H
SOIL
CUSS
(USCS)
TRENCH T58
ELEV. (MSL.) 170
EQUIPMENT
DATE COMPLETED 11/8/99
TRACKHOE JD 555 24"
iUJ'
H^l-
!E|^ ^gg
z«3
Q.Q!v^
>-
gu^
go
a
Qi'
Pt
to wg gz *-o u
- 0 MATEIUAL DESCRIPTION
2 -
4 -
CL TOPSOIL
Stiff, humid to tlamp, dark gray-brown, Sandy
CIAY
SM
SANTIACK) FORMATION
Dense, damp, light reddish-brown, SUty, coarse
SANDSTONE, massive
TRENCH TERMINATED AT 6 FEET
Figure A-113, Log of Trench T 58 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . ORIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATIOH AND AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IM
FEET
SAMPLE
NO.
CO
o SOIL
CUSS
(USCS)
TRENCH T 59
ELEV. (MSL.) 238
EQUIPMENT
DATE COMPLETED 11/10/99
TRACKHOE JD 555 24"
Ot
:to •H, tO^
UJ; LU
gu^
gci
>5;
Qi Q
s-
ag gz *-o
U
0
MATERIAL DESCRIPTION
2 -
4 -
6 -
8 -
- 10 -
- 12 -
14 -
- 16
sc
FILL
Loose, dty to humid, brown. Clayey, GraveUy
SAND, with oversize debris, trash, wood, sUt
^6'
/
TERRACE DEPOSIT
Medium dense, reddish-brown. Clayey, fine SAND
-Massive, with lenses of clay and sand, oxide and
caibonate fractuie coatings, some porosity,
root-voids
SC
m m\
'.U\.'\'
* k * »(*
m
-Iiregular depositional contact
SM
SANTL\CK) FORMATION
Dense, damp, light orange to olive, SUty, fine
SANDSTONE, with some clay
TRENCH TERMINATED AT 16 FEET
Figure A-114, Log of Trench T 59 LCG
I
I
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B
@ ... DISTURBED OR BAG SAMPLE B
STANOARD PENETRATION TEST
CHUNK SAMPLE z..
ORIVE SAMPLE (UNDISTURBED)
WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO. >•
to o -I o
SOIL
CUSS
(USCS)
TRENCH T60
ELEV. (MSL.) 190
EQUIPMENT
DATE COMPLETED 11/10/99
TRACKHOE JD 555 24"
ori •
Hy»-
HfflJ.
£w59
H':
gu^
gd
Qi O
UJ
•o
u - 0 MATERL\L DESCRIPTION
4 -
6 -
8 -
10
12
14
16 H
18 •-\
:•]•
•f-
ALLUVIUM
Lfxise, humid, dark gray-brown, SUty. fine SAND
-Very porous, with root-voids, rootiets
SM
-Becomes loose to medium dense, light brown-tan.
Silty, fine SAND
-No root-void, rootlets, becomes cleaner with
depth
-Becomes very moist
I TRENCH TERMINATED AT 18 FEET
(CAVING)
Figure A-115, Log of Trench T 60 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . ORIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
OEPTH
IN
FEET
SAMPLE
NO.
>-
CO o -1 o
X
SOIL
CUSS
(USCS)
TRENCH T61
ELEV. (MSL.) 230
EQUIPMENT
DATE COMPLETED 11/10/99
TRACKHOE JD 555 24"
iii'^
gH
|N ug
HS
tog
iu=j
Ss
H':
gu^
gci
o
Ul Qi P H
to UJ
•o u
MATERIAL DESCRIPTION
2 -
- 4 -
- 6
- 8
sc
• * ^ • «
m.
•i.yv
- • J • 1
SM
COLLUVIUM
MetUum dense, humid, dark brown, Qayey, fine
SAND
-Porous, with roots, burrows
-Irregular, out-of-slope inclined contact
SANTIACK) FORMATION
Veiy dense, damp, light brown to tan, SUty, fine
SANDSTONE, Massive to faintiy banded
-Near-horizontal bedding
TRENCH TERMINATED AT 8 FEET
Figure A-116, Log of Trench T 61 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST • .. . DRIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE z.. . UATER TABLE OR SEEPAGE
I
I
MOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES OMLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
CO o _l o
X
SOIL
CUSS
(USCS)
TRENCH T62
ELEV. (MSL.) 120
EQUIPMENT
DATE COMPLETED 11/10/99
TRACKHOE JD 555 24"
SUJ'^
ul^
Qi^^tO i—yi-r go
Qi^
go
ag
07
u
MATERIAL DESCRIPTION
- 2
- 4 -
ALLUVIUM
Stiff, moist, tlark brown. Sandy CIAY
-Porous, with rootiets. root-voids, burrows
T62-1
- 6
8 -
10
T62-2
T62-3
T62^
CL 103.7 9.3
7^
SC
TERRACE DEPOSIT
MetUum dense, tlamp to moist, reddish-brown.
Clayey, medium SAND, some coarse sand
-Massive, wifli minor root-voids
106.9 9.6
TRENCH TERMINATED AT 10 FEET
Figure A-117, Log of Trench T 62 LCG
SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01 I
TRENCH T63
ELEV. (MSL.) 100
EQUIPMENT
DATE COMPLETED 11/10/99
TRACKHOE JD 555 24"
Ori -
Qi^to
to« hi
Q.OS\^
gu: gd
Q
UJS
Q!^
to UJ
•O U
MATERLAL DESCRIPTION
ALLUVIUM
Stiff, humid, daric brown, Sandy CIAY to very
Clayey SAND
-Porous, with rootiets and root-voids, burrows
Stiff, moist, Ught brown, very Sandy CIAY
-Massive, with scattered charcoal ftragments and
root-voids
-Becomes Very stiff, very moist, light olive, very
SUty CLAY, with some fine sand
TRENCH TERMINATED AT 18.5 FEET
Figure A-118, Log of Trench T 63 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL
@ ... DISTURBED OR BAG SAMPLE
B... STANDARD PENETRATION TEST ORIVE SAMPLE (UNDISTURBED)
B ... CHUNK SAMPLE Z ... WATER TABLE OR SEEPAGE
HOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS ANO TIMES. I
I
PROJECT NO. 06403-12-01
DEPTH
IM
FEET
SAMPLE
MO.
>-to o -I o X H H
SOIL
CUSS
(USCS)
TRENCH T 64
ELEV. (MSL.) 125
EQUIPMENT
DATE COMPLETED 11/10/99
TRACKHOE JD 555 24"
Ori -
^|N
Ha§
hiffioi
!tO'
UJ;
>-
go
g^
H^
ag gz *-o
U - 0 MATERLVL DESCRIPTION
- 4 -
- 6 -
8 -
- 10 -
- 12 -
- 14 -
- 16
ALLUVIUM
Stiff, humid, dark gray-brown, Sandy CLAY
-Massive, porous, wifli rootiets, root-voids and
burrows
CL
-Becomes moist, brown
SM
CL
y^
y. SC
TERRACE DEPOSIT
Medium dense, damp. Ught redtUsh-brown. SUty,
mediumjti^coarse SANDj^ wifli some clay
Very stiff, moist, olive-brown, Sandy CLAY,
plastic^ wiih sUckensided fracmres (discontinuous)
Medium dense, moist, light brown. Clayey, fine to
medium SAND
TRENCH TERMINATED AT 16 FEET
Figure A-119, Log of Trench T 64 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B.. . STANDARD PENETRATION TEST DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
@ ... DISTURBED OR BAG SAMPLE B.. . CHUNK SAMPLE z... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS MOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
TRENCH T65
ELEV. (MSL.) 117
EQUIPMENT
DATE COMPLETED
TRACKHOE JD 555 24"
11/10/99
>g -
4^1-•*LL :£\ to
Ul to' iUJ; a.Q!w
z^ go
5-5;
Q
UJ
MATERLVL DESCRIPTION
COLLUVIUM
Stiff, humid to moist, dark gray-brown, Sandy
CLAY
TERRAC^E DEPOSIT
Medium dense, moist, reddish-brown, vety Clayey,
mediiun to coarse SAND
-Remolded clay seam, 1/2" fluck, N20W, 25SW
-Massive, with scattered pebbles and charcoal
fragments
-Remolded clay seam, 1/2" to 1" fliick, N30W.
15SW; possible sheared contact
SANTTACJO FORMATION
Hard, damp, light olive, Qayey SILTSTONE
-Massive, blocky, low-angle betis
TRENCH TERMINATED AT 14 FEET
Figure A-120, Log of Trench T 65 LCG
SAMPLE SYMBOLS ° """ ''""'""^ UNSUCCESSFUL
^ ... DISTURBED OR BAG SAMPLE
B... STANDARD PENETRATION TEST
B ... CHUNK SAMPLE
1... DRIVE SAMPLE (UNDISTURBED) 1
Z ... WATER TABLE OR SEEPAGE j
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IM
FEET
SAMPLE
NO.
>-to O _l o X H H
SOIL
CUSS
(USCS)
TRENCH T66
ELEV. (MSL.)
EQUIPMENT
93 DATE COMPLETED 11/10/99
TRACKHOE JD 555 24"
^ui^
HS
^«g
UJMQ to
Ss
gu:
gd
>-5;
Qi
ag
gz
u
- 0 MATERIAL DESCRIPTION
- 2 -
- 4
6 -
8 -
10 -
12 -
I- 14 -
CL
SC
CL
ALLUVIUM
Stiff to vety stiff, damp to moist, dark
gray-brown, Sandy CLAY
-Massive, porous, with root-voids, burrows and
scattered charcoal fragments
-Becomes stiff, very moist
TERRACE DEPOSIT
Medium dense, moist, light reddish-brown, Qayey,
medium SAND, with some silt, massive
SANTLVCK) FORMATION
\ Hard, moist, Ught olive, very SUty ClAYSTONE Z'
TRENCH TERMINATED AT 15 FEET
Figure A-121, Log of Trench T 66 LCG
SAMPLESYMBOLS • SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST ORIVE SAMPLE (UNDISTURBED) SAMPLESYMBOLS
@ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
OATE INDICATED. IT IS MOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
TRENCH T 67
ELEV. (MSL.).
EQUIPMENT
95 DATE COMPLETED 11/10/99
TRACKHOE JD 555 24"
^SLU'^
!E|H:
hi
iUi"
UJ;
H'
gL
UJf
Q
UJ6*
Qi^
Pi_
to UJ
-o u
MATERIAL DESCRIPTION
COLLUVIUM
Stiff to very stiff, humid, dark gray-brown. Sandy
CIAY. massive, porous, with rootlets, root-voids
and burrows
-Irregular contact
TERRACE DEPOSIT
MetUum dense, moist, light brown to
reddish-brown, Silty, fine to metUum SAND, some
clay, massive
103.4 11.4
Medium dense, moist, Ught reddish-brown. Clayey,
medium SAND
SANTTACK) FORMATTON
Vety stiff, very moist, light olive to gray, SUty
CLAYSTONE, very we^ered, with some sand /
TRENCH TERMINATED AT 16 FEET
Figure A-122, Log of Trench T 67 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST • . . ORIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL
B... @ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE z. .. UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
to O -J O X
SOIL
CUSS
(USCS)
TRENCH T 68
ELEV. (MSL.) 150
EQUIPMENT
DATE COMPLETED 11/10/99
TRACKHOE JD 555 24"
!S|N
^wg
UJ^O
ggm
0.01 ^^
H-
gju:
id UJ,
hi^S Oi^ P._
Ui
- 0 MATERLVL DESCRIPTION
- 2 -
- 4 -
6
8
CL TOPSOIL
Stiff, humid, dark brown, Sandy CIAY
CL
SM
SANTTACK) FORMATTON
Stiff, moist, olive-brown. SUty ClAYSTONE
-Vety fractured and weathered
-Horizont^ bedfiing^ contact
Vety dense, damp, light olive to brown, SUty, fine
SAIWSTONE, some clay, blocky
TRENCH TERMINATED AT 8 FEET
Figure A-123, Log of Trench T 68 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST 1 ... ORIVE SAMPLE (UNDISTURBED)
@ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE Z ... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> CD O -I O X
SOIL
CUSS
(USCS)
TRENCH T69
ELEV. (MSL.) 120
EQUIPMENT
DATE COMPLETED 11/11/99
TRACKHOE JD 555 24"
og'^
^|N
Ul ^«'3
gu^
gci
^b
oe
a
uji5
p
«g
gz *-o u
- 0 MATERIAL DESCRIPTION
2 -
4 -
6 -
8
10 -1
4!
SM
'Jt.yV
» • 4 • 1
m SM
ML
COLLUVIUM
Loose, damp to moist, tiark brown, SUty, fine
SAND
-Porous, rootiets and root-voids, and some clay
-Very irregular contact
SANTTACJO FORMATION
Dense, vety moist, Ught reddish-brown, SUty,
coarse SANDSTONE
-Weathered, fractured
Hartf, moist, li^t olive, cfayey SELTSfONE
-Blocky
TRENCH TERMINATED AT 11 FEET
Figure A-124, Log of Trench T 69 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B ... STANOARO PENETRATION TEST I
@ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE Z
ORIVE SAMPLE (UNDISTURBED)
WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TREHCH LOCATION ANO AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES. I
I
PROJECT NO. 06403-12-01
OEPTH
IN
FEET
SAMPLE
NO.
>-
to
Q _l O X
SOIL
CUSS
(USCS)
TRENCH T70
ELEV. (MSL.) 180
EQUIPMENT
DATE COMPLETED 11/11/99
TRACKHOE JD 555 24"
iUJ'
H H
igg gSg gg^
gu:
UJ^ Qi^
HP; gz *-o
u
- 0 MATERIAL DESCRIPTION
2 -
4 -
- 6 -
- 8
SC FELL
Loose, dty, dark brown, Qayey, Gravelly SAND
CL
COLLUVIUM
Stiff, humid, red-brown, vety Sandy CIAY
ML-CL SANTIACK) FORMATTON
Hard, damp, light olive-brown, very Clayey
X SILTSTONE y TRENCH TERMINATED AT 8 FEET
Figure A-125, Log of Trench T 70 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES OMLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
>-to o _1 o
X
SOIL
CUSS
(USCS)
TRENCH T71
ELEV. (MSL.) 105
EQUIPMENT
DATE COMPLETED 11/11/99
TRACKHOE JD 555 24"
iij'^
to to
HS
tog
LU::;;
Ss
H'^ gu^
gd
iu^5
Qi
UJ
•o
U MATERLVL DESCRIPTION
- 2 -
- 4 -
- 6
CL TOPSOEL
Stiff, humid, dark brown, SUty CLAY, with some
sand
CL
SANTTAGO FORMATTON
Hard, moist, olive-gray, SUty ClAYSTONE
-Massive, blocky
/-
TRENCH TERMINATED AT 6 FEET
Figure A-126, Log of Trench T 71 LCG
SAMPLE SYMBOLS ° - UNSUCCESSFUL
W ... DISTURBED OR BAG SAMPLE
B.
B.
. STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED) 1
. CHUNK SAMPLE Z ... WATER TABLE OR SEEPAGE j
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AMD AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IM
FEET
SAMPLE
MO.
5-to O
O X H H
SOIL
CUSS
(USCS)
TRENCH T72
ELEV. (MSL.) 120
EQUIPMENT
DATE COMPLETED 11/11/99
TRACKHOE JD 555 24"
ih.
to H? tO^
Ss
H': gu^
gd
>-5;
Qi^ a
UJ-5
Q!^ Pi_
to UJ
•o u
- 0
2
4
6
MATERIAL DESCRIPTION
T72-1
8 -
- 10
CL
SC
TOPSOIL
\ Stiff, humid, dark gray-brown, Sandy CIAY
CL-CH
TERRACE DEPOSIT
MetUum dense, moist, reddish-brown, Qayey, fine
to medium SAND, with pebble gravel along SE
dipping contact
y
SANTTACK) FORMATION
Vety stiff, moist, light olive with white mottiing.
SUty CLAYSTONE
-Remolded clay seam N60W. 35SW. - 1/4-1/2"
thick, with gypsum Imings
-Vety weathered and fractured, massive, with
abundant calcium sulfate
TRENCH TERMINATED AT 10 FEET
Figure A-127, Log of Trench T 72 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL B... STANOARO PENETRATION TEST • . . ORIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE z. . UATER TABLE OR SEEPAGE
MOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIOHS ANO TIMES.
PROJECT NO. 06403-12-01
SOIL
CUSS
(USCS)
TRENCH T73
ELEV. (MSL.) 110
EQUIPMENT
DATE COMPLETED 11/11/99
TRACKHOE JD 555 24"
;UJ'
^wg
ySg
gu:
go
>-5;
Qi^
a
s-
ag
gz
u MATERIAL DESCRIPTION
COLLUVIUM
Stiff, moist, dark brown, Sandy CIAY
-Massive with 1mm - 2mm spots of gypsum (?)
SANTTACK) FORMATTON
Hard, moist, light olive, vety Qayey SILTSTONE
-Massive, fractured y
TRENCH TERMINATED AT 8 FEET
Figure A-128, Log of Trench T 73 LCG
SAMPLE SYMBOLS ° '"' '^"'•''"^ UNSUCCESSFUL
^ ... DISTURBED OR BAG SAMPLE
B ... STANDARD PENETRATION TEST
B ... CHUNK SAMPLE
1... DRIVE SAMPLE (UNDISTURBED) |
Z ... UATER TABLE OR SEEPAGE |
i
I
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS ANO TIMES. I
I
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
>-to o -I o X H H
SOIL
CUSS
(USCS)
TRENCH T74
ELEV. (MSL.)
EQUIPMENT
85 DATE COMPLETED 11/11/99
TRACKHOE JD 555 24"
;U'
Ot
'A
to* UJ;
to
H';
gu^
gd
>5;
Qi
a
UJS
Ql^
ag
gz
^O U
- 0 MATERLVL DESCRIPTION
2 -
- 4 -
6 -
8
- 10 -
- 12 -
- 14
CL
\%'i sc
CX)LLUVIUM
Stiff, moist, dark gray-brown, Sandy CLAY
SANTTAGO FORMATTON
Medium dense, damp to moist, light brown to
olive. Clayey, medium SANDSTONE, very
weathered, massive
-Becomes less weathered, dense
TRENCH TERMINATED AT 14 FEET
Figure A-129, Log of Trench T 74 LCG
SAMPLE SYMBOLS ° '"" ''^""'^'"^ UNSUCCESSFUL
^ ... DISTURBED OR BAG SAMPLE
B.
B.
. STANDARD PENETRATION TEST 1 ... DRIVE SAMPLE (UNDISTURBED)
. CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS MOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
TRENCH T75
98 ELEV. (MSL.).
EQUIPMENT
DATE COMPLETED 11/11/99
TRACKHOE JD 555 24"
iUJ'
Qit;^to
^w3 UJ
H'
to,
UJ CJ
Qi'
a
UJ^ DC
Pi_
LU
-O O
MATERIAL DESCRIPTION
ALLUVIUM
Stiff, moist, dark brown, Sandy CIAY
-Becomes more moist
-Irregular transitional contact
Soft to stiff, very moist, olive-brown, SUty CIAY
-Vety fiactured, weathered, mixed texture, with
numerous clay seams (possible weathered Santiago)
SANTTACJO FORMATTON
Very stiff to hard, moist, light olive, SUty
CLAYSTONE
-Very fractured, blocky
TRENCH TERMINATED AT 17 FEET
Figure A-130, Log of Trench T 75 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL
B. ^ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE
HOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES OHLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
SOIL
CUSS
(USCS)
TRENCH T76
ELEV. (MSL.) 110
EQUEPMENT
DATE COMPLETED 11/11/99
TRACKHOE JD 555 24"
gH
|N wg
HS
tog
Ss
Z^ gtJ
a
i-\
oe^
gz *-o u
- 0 MATERIAL DESCRIPTION
- 2 -
4 -
- 6 -
CL
CL
TOPSOIL
Stiff, humid, dark brown, Sandy CIAY
SANTTAGO FORMATTON
Hard, moist, Ught olive mottied with white, SUty
ClAYSTONE, wifli some sand, weadiered wifli
calcium sulfate (gypsum) mottling, massive
-Clay seam 1/8* thick, low angle and fiiscontinuous
TRENCH TERMINATED AT 8 FEET
Figure A-131, Log of Trench T 76 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B
DISTURBED OR BAG SAMPLE B
.. STANDARD PENETRATIOM TEST
.. CHUNK SAMPLE
• DRIVE SAMPLE (UNDISTURBED)
Z ... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWM HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
TRENCH T77
ELEV. (MSL.) 100
EQUIPMENT
DATE COMPLETED 11/11/99
TRACKHOE JD 555 24"
Ori • HyH H?U.
:co to I 1 gtog ggo
gu^
gd
>5;
Qi
a
gc
ag gz *-o u
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, moist, dark gray-brown, Sandy CIAY;
massive, porous, with root-voids, burrows
-Becomes more sandy, moist
SANTTAGO FORMATION
Very stiff to hard, moist, light olive, vety Clayey
SILTSTONE y
TRENCH TERMINATED AT 10 FEET
Figure A-132, Log of Trench T 77 LCG
SAMPLE SYMBOLS ° - ^^"'"''"^ UNSUCCESSFUL
^ ... DISTURBED OR BAG SAMPLE
B.
B.
. STANOARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED) 1
. CHUNK SAMPLE Z ... WATER TABLE OR SEEPAGE |
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
OEPTH
IN
FEET
SAMPLE
MO.
> CD O -I O X
SOIL
CUSS
(USCS)
TRENCH T78
ELEV. (MSL.) 180
EQUIPMENT
DATE COMPLETED 11/11/99
TRACKHOE JD 555 24"
Ss ;ui I
Qi =a-to« Ul QiS
UJ-5
§H
HS
HS gz *-o o
.f-1
l-r
•f-1-
.f-1
I -I-
-f-1-
.f-1
I-f
•t-l
f.l l-r
•f-T
.f-1 l-r
:f fi-
MATERIAL DESCRIPTION
-2-1
- 4
6
S- 8
10 -
| 3 |- 12
16 1
SM
SM
ALLUVIUM
Loose, humid, dark brown, SUty. fine SAND
-Very porous, with rootiets. root-voids, burrows
througiiout
-Contains trace clay, lighter brown
TERRACE DEPOSIT
Medium dense, moist. Ught brown. SUty. fine
SAND
-Minor root-voitis
TRENCH TERMINATED AT 16 FEET
Figure A-133, Log of Treuch T 78 LCG
SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST 1. :. DRIVE SAMPLE (UNDISTURBED)
@ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE z. . UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
to
O SOIL
CUSS
(USCS)
TRENCH T79
ELEV. (MSL.) 150
EQUIPMENT
DATE COMPLETED 11/11/99
TRACKHOE JD 555 24"
OS, • HHi-
Hlffi :U.
hi Ul^
Ss
gu^
go
5-e
Oi^ a
g6
ag gz *-o
U
0
MATERIAL DESCRIPTION
2 -
4 -
6 -
8 -
10 -
12 -
14 -
h 16 -
- 18
CL
SM
i 7^
y.
y. SC-CL
m
ALLUVIUM
Stiff to vety stiff, humid to damp, reddish-brown,
veiy Sandy CLAY
-Massive, porous, with root-voitis and burrows
Medium dense, damp, brown, SUty, fine SAND
-Porous, with root-voitls, burrows
TERRACE DEPOSIT
Medium dense, moist, reddish-brown, very Clayey
SAND to Sandy CLAY
-Massive, with minor porosity and slight coatings
of calcium carbonate/sulfate
TRENCH TERMINATED AT 18 FEET
Figure A-134, Log of Trench T 79 LCG
I
I
SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B
^ ... DISTURBED OR BAG SAMPLE B
STANDARD PENETRATION TEST
CHUNK SAMPLE
,. ORIVE SAMPLE (UNDISTURBED)
.. UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATIOM AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESEMTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
TRENCH T 80
ELEV. (MSL.) 158
EQUIPMENT
DATE COMPLETED 11/11/99
TRACKHOE JD 555 24"
5LU'
hi
to H; to'' iU|;
to
UJ^CQ
guj gd
>-5; oe^ a
ui%
p
wg
gz *-o u
- 0 MATERLVL DESCRIPTION
18
- 2 -
4 -
6
8
10 -
12 -
14 -
16 -
ALLUVIUM
Stiff, humid to damp, dark brown, Sandy CIAY
CL
-Becomes soft to stiff, moist, reddish-brown, very
Sandy CLAY
-Porous, with root-voids, scattered charcoal
fragments
-Becomes more sandy, less porous
TRENCH TERMINATED AT 18 FEET
Figure A-135, Log of Trench T 80 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL E... STANDARD PENETRATION TEST 1 ... DRIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIOHS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IM
FEET
SAMPLE
NO.
5-to o SOIL
CLASS
(USCS)
TRENCH T 81
ELEV. (MSL.) 190
EQUIPMENT
DATE COMPLETED 11/11/99
TRACKHOE JD 555 24"
^ui'^
^|N
UJ«uj UJ;
H'^ gu^ gd
>5; tt:
UJ^
Q: Sfe ag gz *-o u
- 0
- 2
- 4
- 6 -
MATEIUAL DESCRIPTION
SC TOPSOIL
\ Loose, dry, dark brown, very Qayey SAND
ML
SANTIAGO FORMATTON
Hard, damp, very light olive to brown, Qayey
SILTSTONE, with some sand, massive to near
horizontal beds
y
TRENCH TERMINATED AT 7 FEET
Figure A-136, Log of Trench T 81 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B.. . STANDARD PENETRATION TEST • .. . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL . STANDARD PENETRATION TEST SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B.. . CHUNK SAMPLE z.. . WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWM HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> to o _l o I l-
H
SOIL
CUSS
(USCS)
TRENCH T82
ELEV. (MSL.) 175
EQUIPMENT
DATE COMPLETED 11/11/99
TRACKHOE JD 555 24"
ZUJ'^
HS
Ito'
iUI ttS
>-
gu:
go ag gz *-o
CJ
- 0 MATERLVL DESCRIPTION
- 2 -
4 -
8 -
h 10 -
12 -
14 -
ALLUVTUM
Stiff, damp, dark brown, very Sandy CIAY
-Very porous, with root-voids, burrows
CL
SM
SC
TERRACE DEPOSIT
Medium dense, moist, light brown, SUty, coarse
SAND^ with some fiiw
Medium dense, moist, reddish-brown. Clayey, fine
to medium SAND, massive
y.
TRENCH TERMINATED AT 15 FEET
Figure A-137, Log of Trench T 82 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
@ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
>-CD O _l O X
SOIL
CLASS
(USCS)
TRENCH T83
ELEV. (MSL.) 130
EQUIPMENT
DATE COMPLETED 11/12/99
TRACKHOE JD 555 24"
?UJ'
«&N ««g
wSg
CQ UJ UJ
Ul
a
u.
oe a
X-
I
f.
- 0 MATERIAL DESCRIPTION
- 2 -
4 -
6 -
8 -
10
COLLUVIUM
Very stiff, moist, dark olive to brown, very Sandy
CIAY
-Massive, porous, with root-voids, rootiets
CL
CL
-Transitional, near-horizontal
SM
TERRACE DEPOSIT (?)
Stiff, vety moist, light olive, SUty CLAY
-Vety weathered, with discontinuous clay seams^
^ Medium dense, damp, light reddish-brown, Silty,
\ . medium SAND, with some clay y
TRENCH TERMINATED AT 10 FEET
Figure A-138, Log of Trench T 83 LCG
I
I
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL
@ ... DISTURBED OR BAG SAMPLE
B... STANDARD PENETRATIOM TEST DRIVE SAMPLE (UNDISTURBED)
B ... CHUNK SAMPLE Z ... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWM HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES,
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> CD O _l O X H H
SOIL
CUSS
(USCS)
TRENCH T 84
ELEV. (MSL.) 170
EQUIPMENT
DATE COMPLETED 11/12/99
TRACKHOE JD 555 24"
;UJ'
HS
H«3
ujt^o
UJ^CQ
>-
id UJ,
UJ^
ag gz *-o u
- 0 MATERLVL DESCRIPTION
- 2 -
4 -
6 -
8
COLLUVIUM
Stiff, damp to moist, dark brown, Sandy CIAY
CL
CL
SANTTACK) FORMATTON
Stiff, vety moist, olive-brown, SUty ClAYSTONE,
very weathered, fractured, wifli tUscontinuous
sUckensided clay seams.
TRENCH TERMINATED AT 8 FEET
Figure A-139, Log of Trench T 84 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE ? . . UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
TRENCH T85
ELEV. (MSL.) 175
EQUEPMENT
DATE COMPLETED 11/15/99
TRACKHOE JD 555 24"
fkui
H"H:
Ul
a_oi\.^
gu;
go
Qi
Oi
ag gz *^o u
MATERLVL DESCRIPTION
COLLUVIUM
Stiff, moist, dark olive-brown, Sandy CIAY
-Irregular transition inclined southeast
SANTTACK) FORMATTON
Medium dense, moist, Ught brown, Silty, very fine
SANDSTONE, with trace clay, massive
-Becomes dense, blocky, more sandy
TRENCH TERMINATED AT 10 FEET
Figure A-140, Log of Trench T 85 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST • . . ORIVE SAMPLE (UNDISTURBED) | SAMPLE SYMBOLS
S ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE |
MOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIOHS AND TIMES.
PROJECT NO. 06403-12-01
OEPTH
IN
FEET
SAMPLE
NO.
H
SOIL
CUSS
(USCS)
TRENCH T86
ELEV. (MSL.) 143
EQUIPMENT
DATE COMPLETED 11/15/99
TRACKHOE JD 555 24"
Ot H
^?N
Otf;: CO
tot lU
Ujgg
z^ gci
>-'^
o
g-
Sfe
"g gz ^o u
- 0 MATERIAL DESCRIPTION
- 2 -
- 4 -
- 6 -
- 8
- 10 -
- 12 -
COLLUVIUM
Stiff, damp, dark gray-brown, Sandy CLAY,
massive, porous, with rootlets and root-voids and
burrows
CL
T86-1
T86-2
SC-CL
- 14 -T86-3
T86-4
16
CL-CH
TERRACE DEPOSIT (?)
Stiff, very moist, reddish-brown, very Clayey, fine
SAND, massive, with scattered fine gravel
-Transitional, near-horizontal contact
SANTTACK) FORMATION
Very stiff, very moist, olive-brown, Silty
ClAYSTONE, very weatiiered, fractured, with
tUscontinuous ciay seams
-Becomes olive-gray
104.7 20.6
101.4 23.3
TRENCH TERMINATED AT 16 FEET
Figure A-141, Log of Trench T 86 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IM
FEET
SOIL
CLASS
(USCS)
TRENCH T87
ELEV. (MSL.) 138
EQUIPMENT
DATE COMPLETED 11/15/99
TRACKHOE JD 555 24"
;uj'
Ot
:«g
HS
g«S
UJ
H
to U.
«
u
oe^ Sfe
ag gz ^o u MATEIUAL DESCRIPTION
2 -
- 4 -
- 6 -
8 -
10
12 -
14 -
- 16 -
CL
SM
COLLUVIUM
Stiff, damp, dark gray-brown, Sandy CLAY
-Massive, porous, with rootiets, root-voids and
burrows
-Becomes moist to very moist
TERRACE DEPOSIT
Medium dense, damp, Ught reddish-brown, Silty,
fine SAND, with some clay
SC-CL
MetUum dense, damp, redtUsh-brown, Clayey, fine
SAND to very Sandy CLAY, massive, blocky, with
scattered fine gravel and grit, some porosity, with
scattered rootiets and root-voids
-Scattered small fragments of charcoal
116.3 15.4
TRENCH TERMINATED AT 17 FEET
Figure A-142, Log of Trench T 87 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B ... STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
@ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE z. . UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> to o -I o X H-H
SOIL
CUSS
(USCS)
TRENCH T88
ELEV. (MSL.) 145
EQUIPMENT
DATE COMPLETED
TRACKHOE JD 555 24"
11/15/99 ^|N
H«3 Ujt^O
UI^CQ
H':
z": go UJ
- 0 MATERLVL DESCRIPTION
- 2 -
- 4 -
- 6 -
8 -
10 -
12 -
14
CL
CL-CH
CL
COLLUVIUM
Stiff, moist, dark gray-brown, Sandy CLAY
-Massive, porous, with rootiets, root-voids and
burrows
TERRACE DEPOSIT
Soft to stiff, very moist to wet, Ught olive-brown,
SUty CIAY, with some reddish-brown sand lenses,
and discontinuous clay seams, almost plastic
SANTTACK) FORMATTON
Very stiff, very moist, light olive-gray. SUty
ClAYSTONE
-Vety weathered, with discontinuous clay seams,
very fractured
TRENCH TERMINATED AT 14 FEET
Figure A-143, Log of Trench T 88 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE z. . UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATIOM AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12^1
DEPTH
IN
FEET
SAMPLE
NO.
> to o -I a X I-H
SOIL
CUSS
(USCS)
TRENCH T89
ELEV. (MSL.) 123
EQUIPMENT
DATE COMPLETED 11/15/99
TRACKHOE JD 555 24"
Ori -nyi-
H?U.
to :to
•H, to' UJ; UJ fV ULi
gu^
gd
>-5;
Qi a
UJ6
Qi
Pt_
to
•o
u
- 0 MATERIAL DESCRIPTION
- 2 -
4 -
6 -
8 -
CL
CL
COLLUVIUM
Stiff, damp to moist, tlark gray-brown, Sandy
CIAY
SANTTAGO FORMATTON
Stiff, very moist, Ught olive-brown. Sandy
CLAYSTONE, veiy weadiered, fracmred
-Becomes hard, moist, olive, SUty ClAYSTONE,
fractured, blocky, massive
TRENCH TERMINATED AT 9 FEET
Figure A-144, Log of Trench T 89 LCG
}
I
I
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B
^ ... DISTURBED OR BAG SAMPLE B
.. STANDARD PENETRATION TEST
.. CHUNK SAMPLE
DRIVE SAMPLE (UNDISTURBED)
UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECTNO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
CO o -J o
X
SOIL
CUSS
(USCS)
TRENCH T90
ELEV. (MSL.) 230
EQUIPMENT
DATE COMPLETED 11/15/99
TRACKHOE JD 555 24"
pg
tu HQ
-fS3
g«S
>-
^hi
\6 hi,
ay
oe^ a
|8
ag gz *-o u
- 0 MATERIAL DESCRIPTION
2 -
4 -
6 -
8
CL TOPSOIL
Stiff, humid, dark gray-brown, Sandy CIAY
CL
SM
SANTTACK) FORMATTON
Hard, damp, olive, SUty CLAYSTONE; very
fracttired and weathered
-Near-horizontal bedding - contact
Vety dense, dainp, li^t olive to brown, SUty,
coarse SANDSTONE, wifli trace clay, bloclqr
TRENCH TERMINATED AT 8 FEET
Figure A-145, Log of Trench T 90 LCG
SAMPLE SYMBOLS • ... SAMPLING UMSUCCESSFUL B. . STANDARD PENETRATION TEST • . . ORIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES OMLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
>-to o -I o
X
SOIL
CLASS
(USCS)
TRENCH T91
ELEV. (MSL.) 130
EQUIPMENT
DATE COMPLETED 11/15/99
TRACKHOE JD 555 24"
Ori • Hy»-H?U.
gsfeg
UJ^Q Sto* hizx
Ss
>-
gu^
gd
>5;
Qi Q
UJ
ag gz *-o u
MATERIAL DESOUPTION
- 2 -
- 4 -
- 6 -
CL
CL
COLLUVIUM
Very stiff, damp to moist, dark gray-brown, Sandy
CLAY, porous, with rootiets, root-voitis, burrows
V
TERRACE DEPOSIT
Very stiff to hard, moist, reddish-brown, very
Sandy CIAY, massive, blocky, with some porosity,
with rootiets, root-voitis
TRENCH TERMINATED AT 7 FEET
Figure A-146, Log of Trench T 91 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED) j SAMPLE SYMBOLS . STANDARD PENETRATION TEST SAMPLE (UNDISTURBED) j
@ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> CD O -J o X t-H
SOIL
CUSS
(USCS)
TRENCH T 92
ELEV. (MSL.) 225
EQUEPMENT
DATE COMPLETED
TRACKHOE JD 555 24"
11/15/99
^hi^.
:to H; to' iUJ:
to
Ul
uj^ta
gd
5-5;
Qi^
Qi^
SH
LU
-O U
MATERLAL DESCREPTION
2 -
4 -
6 -
8
10
CL TOPSOIL
Stiff, humid, dark gray-brown, Sandy CIAY
SM
SANTTACK) FORMATTON
Dense, damp, Ught tan, SUty, fine to medium
SANDSTONE, massive, blocky
-Near-horizontal betiding
TRENCH TERMINATED AT 10 FEET
Figure A-147, Log of Trench T 92 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AMD AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
5-CO o -I o X I-H
SOIL
CUSS
(USCS)
TRENCH T 93
ELEV. (MSL.) 195
EQUIPMENT
DATE COMPLETED 11/15/99
TRACKHOE JD 555 24"
oi, •
^|N
UJ
ggCQ Q.QSN./
to* Ui;
H':
gu: io
g-
Hfe
ag gz *-o u
- 0 MATERLAL DESCRIPTION
2 -
- 4 -
CL
CL
SM
TOPSOIL
Stiff, humid to damp, dark brown, Sandy CIAY
SANTTACK) FORMATTON
Finn to hard, damp, olive, very SUty,
ClAYSTONE
-Vety fiat5ui«^,_with_cddmn suff;^e linings_
Dense, damp, light brown to oUve, SUty, medium
SANDSTONE, with some clay, massive, blocky y
TRENCH TERMINATED AT 7 FEET
f
}
}
Figure A-148, Log of Trench T 93 LCG
1 SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B
S ... DISTURBED OR BAG SAMPLE B
STANDARD PENETRATION TEST
CHUNK SAMPLE
DRIVE SAMPLE (UNDISTURBED)
WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AMD TIMES. I
I
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> to o
H
_l.
SOIL
CUSS
(USCS)
TRENCH T94
ELEV. (MSL.) 175
EQUIPMENT
DATE COMPLETED 11/15/99
TRACKHOE JD 555 24"
Sg'
H^i
= i=N
•a§ ^«3 iugffi
Ul
H': gu.
go
>5;
Qi^
UJS Qi^ Pi-
yt LU
gz *-o u
- 0 MATERLVL DESCRIPTION
I- 4
6 -
h 8 -
10
12 H
14
CL
SM
CL
ALLUVIUM
Stiff, moist, dark brown, Sandy CIAY
-Porous, with rootiets, root-voids and burrows
TERRACIE DEPOSIT
Medium dense, damp, light yeUow-brown to
orange, , Silty, fine SAND, some porosity,
root-voids
MetUum dense, moist, redtUsh-brown, very Sandy
CIAY, massive
TRENCH TERMINATED AT 14 FEET
Figure A-149, Log of Trench T 94 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AHD AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
TRENCH T 95
ELEV. (MSL.) 193
EQUEPMENT
DATE COMPLETED 11/15/99
TRACKHOE JD 555 24"
Ori •
H5U.
H«3
UJUO
uj^oa
0.
H'^ gu^
gci
>-5;
Qi a
ui$> Qi
ag gz ^o u
MATERIAL DESCRIPTION
ALLUVIUM
Soft to stiff, very moist, dark brown, Sandy
CIAY, massive, porous, with root-voids, rootiets
-Very irregular, sharp contact
SANTTACJO FORMATTON
Stiff, very moist, olive mottied with white and
brown. Sandy CLAYSTONE
-Very weathered, with slickensided, remolded clay
seams throughout
TRENCH TERMINATED AT 14 FEET
Tl
Figure A-150, Log of Trench T 95 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B ... STANDARD PENETRATION TEST
^ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE
DRIVE SAMPLE (UNDISTURBED)
UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER
LOCATION AND AT THE
LOCATIONS ANO TIMES.
I
PROJECT NO. 06403-12-01
OEPTH
IN
FEET
SAMPLE
NO.
> U o -I o
X
SOIL
CUSS
(USCS)
TRENCH T 96
ELEV. (MSL.) 200
EQUIPMENT
DATE COMPLETED 11/15/99
TRACKHOE JD 555 24"
SLU'^
^|N Ewg
Hg
yjgs
UJ
H' tOi
UJ,
>-b oe^
g6-
Sfe
ag gz *^o u MATERLVL DESCRIPTION
- 2 -
- 4 -
- 6
- 8 -
1 - 10 -
1 - 12
ALLUVIUM
Soft to stiff, vety moist, dark brown, very Sandy
CIAY
CL
m
* i * *
•tvf
SM SANTTACK) FORMATTON
Dense, damp, Ught olive-gray, very SUty, fine
SANDSTONE, wifli some clay y
TRENCH TERMINATED AT 12 FEET
Figure A-151, Log of Trench T 96 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AMD AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
TRENCH T 97
ELEV. (MSL.) 210
EQUIPMENT
DATE COMPLETED 11/15/99
TRACKHOE JD 555 24"
UJ
gh H^U.
to CO
HS
tog
Ss
H'
tOi
UJ,
Qi'
a
Ui^S
ag
o u
MATERLVL DESCRIPTION
TOPSOIL
Stiff, humid, dark brown, Sandy CLAY
SANTTACK) FORMATTON
Hard, damp, olive-gray, vety SUty ClAYSTONE,
massive to horizontal beds, yery fractured and
weathered
-Becomes vety hard, moist, less firactured and
weathered
y
TRENCH TERMINATED AT 8 FEET
Figure A-152, Log of Trehch T 97 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED)
@ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> to o _l o
X
SOIL
CLASS
(USCS)
TRENCH T98
ELEV. (MSL.) 210
EQUIPMENT
DATE COMPLETED 11/15/99
TRACKHOE JD 555 24"
H
5UJ'
Ot
to IS to
LuUo
Lugo
H': gu^
go >-°^
Q
g6
Sfe
ag gz *-o u MATERLVL DESCRIPTION
- 2
- 4 -
- 6 -
8 -
10
COLLUVIUM
Soft to stiff, vety moist, dark brown, Sandy CIAY
-Porous, with rootiets, root-voids and burrows
CL
-Irregular transitional contact, with fiagments of
Santiago fonnation
SM SANTTACK) FORMATION
Dense, damp, light brown to olive, SUty. fine
SANDSTONE, massive, blocky, with trace clay
-Near-horizontal bedding
/
TRENCH TERMINATED AT 10 FEET
Figure A-153, Log of Trench T 98 LCG
SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST • . . ORIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
@ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE z. . WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES OMLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS MOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IM
FEET
SAMPLE
NO.
> CD O _l O X
SOIL
CUSS
(USCS)
TRENCH T99
ELEV. (MSL.) 175
EQUIPMENT
DATE COMPLETED 11/15/99
TRACKHOE JD 555 24"
^|N
gSg
ggco
gu^
go
Qi a
uj<5 Qi^
SH
to ut
•o u
- 0
MATERIAL DESCRIPTION
2 -
- 4
6 H
8
CL
SM
COLLUVIUM
Stiff to soft, moist, dark gray-brown, Sandy CIAY
-Massive, porous, with rootiets, root-voids and
burrows
-Irregular contact inclmed SW
SANTTACK) FORMATION
Vety dense, tlamp, light tan to orange, Silty, fine
SANDSTONE, massive to near-horizontal beds
TRENCH TERMINATED AT 8 FEET
Figure A-154, Log of Trench T 99 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B
^ ... DISTURBED OR BAG SAMPLE B
STANDARD PENETRATION TEST
CHUNK SAMPLE
... ORIVE SAMPLE (UNDISTURBED)
... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TQ BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES. I
I
PROJECT NO. 06403-12-01
DEPTH
IM
FEET
SAMPLE
NO.
>-O O
_J O X
I-
H
SOIL
cuss
(USCS)
TRENCH TlOO
ELEV. (MSL.) 175
EQUEPMENT
DATE COMPLETED 11/15/99
TRACKHOE JD 555 24"
^|N
Ul H? to' iUJ; UJgtQ
>-
gu^ go
Q
uj-5
ay
•o
U
- 0 MATERIAL DESCREPTION
2 -
- 4 -
- 6 -
- 8 -
- 10 -
- 12
COLLUVIUM
Soft to stiff, moist, dark brown, Sandy CIAY
-Porous, with rootiets, root-voids
CL
SC TERRACE DEPOSIT
Medium dense, moist, redtUsh-brown, Clayey, fine
to medium SAND, wifli some sih, grit
CL Very stiff to hard, very moist, olive-brown, very
Sandy CLAY
TRENCH TERMU^ATED AT 12 FEET
Figure A-155, Log of Trench TlOO LCG
SAMPLE SYMBOLS n ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST 1 ... DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
OEPTH
IN
FEET
SAMPLE
NO.
> CD O SOIL
CUSS
(USCS)
TRENCH TlOl
ELEV. (MSL.) 197
EQUEPMENT
DATE COMPLETED 11/15/99
TRACKHOE JD 555 24"
;UJ'
:to
•H,
to* UJ:
to
LU MUJ
Q.OSv^
H':
z^ go
>-5;
Qi^ Q
uj^5
Qi p I-
(O H UJ
•O U
- 0 MATERIAL DESCRIPTION
2 -
- 4 -
- 6 -
CL TOPSOIL
\ Stiff, humid, tiark gray-brown, Sandy CIAY
ML-MH
SANTIACK) FORMATTON
Hard, danp, light olive, vety Qayey SILTSTONE
-Vety weathered and fractured, with some
sandstone lenses
-Becomes very hard, dty, light olive, cemented,
SUty SANDSTONE
-Concretion layer
TRENCH TERMENATED AT 7 FEET
REFUSAL
ff
Figure A-156, Log of Trench TlOl LCG
} SAMPLE SYMBOLS n ... SAMPLING UNSUCCESSFUL B
^ ... DISTURBED OR BAG SAMPLE B
.. STANOARO PENETRATION TEST
.. CHUNK SAMPLE
DRIVE SAMPLE (UNDISTURBED)
WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. I
I
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
>-to O
H
SOIL
CUSS
(USCS)
TRENCH T102
ELEV. (MSL.) 210
EQUIPMENT
DATE COMPLETED 11/15/99
TRACKHOE JD 555 24"
SLU'^
£|«i:
HS
ojg
Ss
H'l gu^ gd
a
g6
Hfe
ag gz *-o u
- 0 MATERLVL DESCRIPTION
- 2 -
- 4 -
6
8
CL
COLLUVIUM
Soft to stiff, moist, dark brown, Sandy CIAY
-Porous, with rootiets, root-voids
-Becomes vety stiff, less porous
SM SANTTACK) FORMATTON
Very dense, dry, light orange-brown, cemented,
Silty, coarse SANDSTONE, concretion layer
TRENCH TERMINATED AT 8 FEET
REFUSAL
Figure A-157, Log of Trench T102 LCG
SAMPLE SYMBOLS • ... SAMPLING UMSUCCESSFUL B. . STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
@ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
CO o -I o X I-H
SOIL
CLASS
(USCS)
TRENCH T103
ELEV. (MSL.) 250
EQUIPMENT
DATE COMPLETED 11/16/99
TRACKHOE JD 555 24"
ig •
•zH
to to
HS
tog
uis;
Ss
z^ go
5-5;
Qi^
a
s-St to H
LU
•O U
- 0 MATERIAL DESCRIPTION
2 -ri03-l
4 -
6
- 8 -
- 10 -
- 12 -
ri03-2
SC TOPSOBL
Soft, damp, dark brown, very Qayey, fine SAND
SM SANTTACK) FORMATTON
Dense, damp, light reddish-brown to brown, SUty,
fine SANDSTONE, massive, blocky
CL-ML
Hard, damp to moist, olive-brown, SUty
ClAYSTONE, with abuntiant gypsum (calcium
sulfate) in altemating layers
-Horizontal, laminated beds
TRENCH TERMINATED AT 13 FEET
Figure A-158, Log of Trench T103 LCG
SAMPLE SYMBOLS n ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST ORIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE z... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
oe > hi to t-o <n -1 3 o •
X z 1-p H a -1 oe CD
SOIL
CUSS
(USCS)
TRENCH T104
ELEV. (MSL.) 320
EQUIPMENT
DATE COMPLETED 11/16/99
TRACKHOE JD 555 24"
gH
|N wg
HS
tog
LUs;
Ss
H':
gu^
gd
oe^
ui-5
Qi
Pt_
lU
- 0 MATERIAL DESCRIPTION
- 2 -
4 -
- 6 -
SM
CL
• • •»1
mi
m'
9 9 4 9 *
SM
COLLUNOUM
.LooM. i:^, Uglw brown, Gra^ SAND
Stiff, moist, olive. Sandy CLAY
SANTTAGO FORMATTON
Vety dense, damp, light brown-orange, SUty, fine
SANDSTONE, wifli some clay
-Horizontal laminated bedding
TRENCH TERMINATED AT 7 FEET
Figure A-159, Log of Trench T104 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST 1 ... DRIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES OMLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESEMTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
MO.
>-CO o
H
SOIL
CUSS
(USCS)
TRENCH T105
ELEV. (MSL.) 302
EQUIPMENT
DATE COMPLETED 11/16/99
TRACKHOE JD 555 24"
>g •
*zH
:cog
itoO Ul
01 u.
5-5; oe^
g6
Sfe ag gz
CJ
MATEIUAL DESCRIPTION
2 -
- 6 -
f-1 l-r
•f •!•
9 9 4 9 1
:-t--:f;
9 9l9 9
9 9 4 9' ,-v-3-.r A'*'.f
SM
COLLUVIUM
Loose, humid, light reddish-brown, SUty, fine
SAND, with some clay and pebble-gravel
-Porous, with root-voids, burrows
SM
SANTTAGO FORMATION
Vety dense, damp, light tan, SUty, fine
SANDSTONE
-Horizontally betlded
TRENCH TERMINATED AT 7 FEET
I
Figure A-160, Log of Treiich T105
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B
@ ... DISTURBED OR BAG SAMPLE B
STANDARD PENETRATION TEST
CHUNK SAMPLE
• ... DRIVE SAMPLE (UNDISTURBED)
Z ... UATER TABLE OR SEEPAGE
MOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS AND TIMES.
I
PROJECT NO. 06403-12-01
DEPTH
IM
FEET
SAMPLE
MO.
> CD O -I O X
I-
H
SOIL
CLASS
(USCS)
TRENCH T106
ELEV. (MSL.) 310
EQUIPMENT
DATE COMPLETED 11/16/99
TRACKHOE JD 555 24"
gH
IN wg
HS
tog
LUs;
Ss
5u:
go
a
g6-
Sfe wg
gz
u
- 0 MATERLAL DESCRIPTION
- 2 -
4 -ri06-l
- 6 -
COLLUVIUM
.Loose,_^,Ugl« brown, Grave^^ SAND
Stiff, moist, olive, Sandy CIAY
SANTIACK) FORMATTON
Very dense, damp, light tan, SUty, fine
SANDSTONE
-Upper 12" moderately cemented
TRENCH TERMINATED AT 7 FEET
Figure A-161, Log of Trench T106 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B. . STANDARD PENETRATION TEST • . . DRIVE SAMPLE (UNDISTURBED) SAMPLE SYMBOLS
^ ... DISTURBED OR BAG SAMPLE B. . CHUNK SAMPLE z. . UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES OMLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
OATE INOrCATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> to o _l o
X
SOIL
CUSS
(USCS)
TRENCH T107
ELEV. (MSL.) 301 DATE COMPLETED 11/16/99
EQUIPMENT TRACKHOE JD 555 24"
iij'^
gH
|N to a-
«3 Ss
to,
UJ,
Qi' a
Ui
•o
u MATERIAL DESCRIPTION
- 2 -
6 -
/•y sc
9 9\9 9
A,'\>\
.•l.-J-.f. ->:i:-t' i±kk;
SM
COLLUVIUM
Loose, htimid, medium dark brown, Qayey, fine
SAND, with some sUt, scattered gravel
SANTTACK) FORMATTON
Very dense, damp, light tan to gray, SUty, fine
SANDSTONE
TRENCH TERMINATED AT 8 FEET
Figure A-162, Log of Trench T107 LCG
SAMPLE SYMBOLS ° - ''^"'""'^ ""SUCCESSFUL
^ ... DISTURBED OR BAG SAMPLE
B.
B.
. STANOARO PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED) j
. CHUNK SAMPLE Z ... WATER TABLE OR SEEPAGE , I
MOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON-APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AMO TIMES. I
I
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> CO o _l o X I-H
SOIL
CUSS
(USCS)
TRENCH T108
ELEV, (MSL.) 320
EQUIPMENT
DATE COMPLETED 11/16/99
TRACKHOE JD 555 24"
Suj'^ Ori •
H^U.
H^ to'' UJ;
to
LU Z
Q.Q!v^
H':
¥'
>-b Qi^
Ul,
o'
g-
Sfe
ag gz *-o u - 0 MATERLVL DESCRIPTION
- 2 -ri08-l
ri08-2
- 4 -
- 6 -
8 -
SC
5M-GM
•::d'
•a:-
m
.•v*>.r, A't'.\i
9 9\9 9
'-m
9 9 4 9 i
m
9 9\9 9
•.r.i.-i'
SM
TOPSOIL
-\ Loose, dty, dark brown. Clayey, GraveUy SAND, i-
\ with some sUt /
LINDAVISTA FORMATTON
Vety dense, tlamp, reddish-brown, very Gravelly,
medium SANDSTONE
^ -Irregular, nearly horizontal contact ^
SANTTACK) FORMATTON
Dense, danq>, light tan, SUty, fine SANDSTONE
TRENCH TERMINATED AT 9 FEET
Figure A-163, Log of Trench T108 LCG
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL
^ ... DISTURBED OR BAG SAMPLE
B... STANDARD PENETRATION TEST
B ... CHUNK SAMPLE
.. DRIVE SAMPLE (UNDISTURBED)
.. WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWM HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
TRENCH T109
ELEV. (MSL.) 285
EQUIPMENT
DATE COMPLETED 11/16/99
TRACKHOE JD 555 24"
H
;UJ'
Ot
=a-
UJ; UJ jvOJ
H^ gu^ go
*^ v^ Q! a
UJ6* Q;
Pi_
LU
U
MATERLVL DESCRIPTION
COLLUVIUM
Loose, dry to humid, metUum light brown,
GraveUy, SUty, fine SAND, wifli clay, porous, with
numerous root-voids, burrows
-Irregular contact inclined northwest
SANTIACK) FORMATTON
Dense, damp, Ught tan to gray. SUty, fine
SANDSTONE
TRENCH TERMINATED AT 9.5 FEET
Figure A-164, Log of Trench T109 LCG
SAMPLE SYMBOLS ° '"' UNSUCCESSFUL
m ... DISTURBED OR BAG SAMPLE
B ... STANDARD PENETRATION TEST
B ... CHUNK SAMPLE
• ... DRIVE SAMPLE (UNDISTURBED) |
Z ... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
MO.
Qi
>• Ul to h-o <C -J 3 o a X z 1-p H o -J GR SOIL
CUSS
(USCS)
TRENCH Tlio
ELEV. (MSL.) 320
EQUIPMENT
DATE COMPLETED 11/16/99
TRACKHOE JD 555 24"
og .
^|N
H«3
gSg
tt. '^s^
gu.;
gd y-b oc^
g-Sfe «g
gz *-o u
- 0 MATERLVL DESCREPTION
2 -
4 -
h 6 -
- 8
5M-GM
••N'-N
:-t--:f:
•:P::-t^
• » « » (
.•k^j'.f.
TOPSOIL
Loose, dry, reddish-brown. GraveUy, SUty SAND
JM-GM
SM
LINDAVISTA FORMATTON
Very dense, damp, retidish-brown, conglomeratic
SANDSTONE, massive, with some clay and
cemented lenses
-Irregular deposition contact nearly horizontal
SANTIACK) FORMATION
Dense, damp, light tan, SUty, fine SANDSTONE
-Massive to horizontaUy bedded
TRENCH TERMINATED AT 8 FEET
Figure A-165, Log of Trench TIIO LCG
! SAMPLESYMBOLS G ... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST • DRIVE SAMPLE (UNDISTURBED)
j ^ ... DISTURBED OR BAG SAMPLE B... CHUNK SAMPLE Z ... WATER TABLE OR SEEPAGE
SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS MOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
>-to o _J o X H H
SOIL
CUSS
(USCS)
TRENCH Till
ELEV. (MSL.) 315
EQUIPMENT
DATE COMPLETED 11/16/99
TRACKHOE JD 555 24"
Sg':
H^H H5U. <c£\ H^g
UJ^O
UJ^Ol
gu^ gci
Qi^
as
gz
u MATERIAL DESCRIPTION
- 2 -
- 4 -
- 6 -
8
SM
SC
TOPSOIL
\ Loose, dry, Ught brown, SUty, Gravelly SAND
'AT 9 '9,9
9 9*99
.•{•^•.K
A-yy. .•i.-3-.r. .•C-<-.f.
• •]• •
'^.yV
9 9*9
SM
SANTTACK) FORMATION
Medium dense, damp, redtUsh-brown, Qayey, fine
SANDSTONE
-Vety weathered
Vety dense, damp, li^t tan, SUty, fine
SANDSTONE
-3" olive ClAYSTONE layer, horizontal
TRENCH TERMINATED AT 8 FEET
Figure A-166, Log of Trehch Till LCG
SAMPLE SYMBOLS ° - UNSUCCESSFUL
m ... DISTURBED OR BAG SAMPLE
B... STANDARD PENETRATION TEST
B ... CHUNK SAMPLE
1 ... ORIVE SAMPLE (UNDISTURBED) |
Z ... UATER TABLE OR SEEPAGE j
I
\
I
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS AND TIMES. I
I
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> to o _l a X
I-
H -J
SOIL
CUSS
(USCS)
TRENCH T112
ELEV. (MSL.) 319
EQUEPMENT
DATE COMPLETED 11/16/99
TRACKHOE JD 555 24"
SUJ'^ Ori •
^1^
:<o to
lU z Ul^u toH
UJ-J
gu^
go
5-5; Qi^
UJS Qi^
Pl_
to Ui
•a u
- 0 MATEIUAL DESCRIPTION
4
6
8
-yj.'
% 9 9
GP
'A
SM
LINDAVISTA FORMATTON
Dense, damp, reddish-brown, vety GraveUy
SANDSTONE, with some clay, scattered, oversize
(> 12" diameter) boulders
-Irregular, near-horizontal contact
SANTTACK) FORMATTON
Dense, damip, light tan-brown, Silty, fine SAND
.•1.
TRENCH TERMINATED AT 8 FEET
Figure A-167, Log of Trench T112 LCG
SAMPLE SYMBOLS ° "' * '^""'''"^ UNSUCCESSFUL
^ ... DISTURBED OR BAG SAMPLE
B.
B.
. STANDARD PENETRATION
. CHUNK SAMPLE
TEST 1 .
z.
.. DRIVE SAMPLE (UNDISTURBED)
.. UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INOICATEO. IT IS NOT UARRANTED TO^BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
SAMPLE
NO.
>-CO o _l o
X
SOIL
cuss
(USCS)
TRENCH T113
ELEV. (MSL.) 285
EQUIPMENT
DATE COMPLETED 11/16/99
TRACKHOE JD 555 24"
Sg'
PS3
za3
g«i
ica >•
gu^
gd
>-5;
Qi
g-
Sfe ag g^ ^o u
- 0 MATEIUAL DESCRIPTION
- 2 -
- 4 -
m
SM TOPSOEL
Loose, dty, light brown, SUty, GraveUy SAND
-Porous
ry''<..
'^A SC
SANTIACK) FORMATTON
Medium dense, danq>, reddish-brown, vety Qayey,
fine SANDSTONE, massiv6
y
-Becomes very dense
TRENCH TERMINATED AT 7 FEET
Figure A-168, Log of Trench T113 LCG
1 SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B
@ ... DISTURBED OR BAG SAMPLE B
STANDARD PENETRATION TEST
CHUNK SAMPLE
,.. DRIVE SAMPLE (UNDISTURBED)
,.. UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS ANO TIMES. I
I
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/30/99
ELEVATION
360 FEET MST,
j2
X
I-
Q.
Ul Q
10
15
20
25
30
35
AIR TRACK
BORiNG AT-1
Marginal to
Non-
Rippable Rippable Non-Rippable
GEOCON
30
—I 1 1 r
40 50 60 70
DRILL RATE (seconds per foot)
80 90 100
—I
110
06403-12-01 IA COSTA 3Si2JS
FIG. A-169
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/30/99
ELEVATION
335 FEET MSL
10
15
20
0)
a
X 25 h-Q.
Ul
Q
AIR TRACK
BORING AT-2
Marginal to
Non-
Rippable Rippable Non-Rippable
—I I 1 I I
40 50 60 70 80
DRILL RATE (seconds per fbot)
GEOCON
INOORrOllATID
90 100
—I
110
06403-12-01 lA COSTA GREENS FIG. A-170
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/29/99
ELEVATION
225 FEET MSL
10
(U
0. UJ
o
30
35
40
45
50
AIR TRACK
BORING AT-3
Marginal to
Non-
Rippable Rippable Non-Rippable
10 20
—<—
30
—1—
50
—I—
70 40 50 60
DRILL RATE (seconds per foot)
80
GEOCON
1 •o o R p o MAtmn
90
—I I
100 110
0S403-12-01 LA COSTA GREENS
FIG. A-171
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/29/99
ELEVATTON
225 FEET MSL
10
15
20
0)
S
X 25
Q.
UJ
Q
30
35
40
45
50
AIR TRACK
BORING AT-4
Marginal to
Non-
Rippable Rippable Non-Rippable
I ( ( 1 I 1 I
10 20 30 40 50 60 70
DRILL RATE (seconds-per foot)
80
GEOCON
INOOMPOIIATaD
90 100 110
06403-12-01 LA COSTA GREEiJS
FIG. A-172
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/29/99
ELEVATION
250 FEET MSL
10
15
20
0)
S
X 25 I-D. LU Q
30
35
40
45
50
AIR TRACK
BORING AT-5
Marginal to
Non-
Rippable Rippable Non-Rlppable
-1 \ < 1 1 1
10 20 30 40 50 60 70
DRILL RATE (seconds per foot)
GEOCON
I • O O II r O « A T • D
80 90 100 110
06403-13-01 LA COSTA GREENS FIG. A-173
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/29/99
ELEVATION
350 FEET MST,
0)
S
X 25 I-
Q. UI
Q
30
35
40
45
50
AIR TRACK
BORING AT-6
Marginal to
Non-
Rippable Rippable Non-Rippable
GEOCON
imaoxramATuo
-1 ( i 1 1 1 1 1 1 1 1
10 20 30 40 50 60 70 80 90 100 110
DRILL RATE (seconds perfoot)
0S403-12-01 LA COSTA GREENS FIG. A-174
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/29/99
ELEVATION
255 FEET MSL
30
35
40
45
50
AIR TRACK
BORING AT-7
Marginal to
Non-
Rippable Rippable Non-Rippable
-1 1 < 1 1 1 r—
10 20 30 40 50 60 70
DRILL RATE (seconds per foot)
80
GEOCON
IKOORrORATaD
90 100 110
06403-12-01 LA COSTA GREENS FIG. A-175
06403-12-01
Q. LU Q
VILLAGES OF LA COSTA - THE GREENS
AIR TRACK
BORiNG AT-8
.Marginal to
Non-
Rippable Rippable Non-Rippable
30
-1 i r
50 60 70
DRILL RATE (seconds per foot)
80
-r
90
11/29/99
ELEVATION
240 FERT M.ST.
GEOCON
IMO O Rp O RATIO
100 110
06403-12-01 LA COSTA GREENS
FIG. A-176
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/29/99
ELEVATION
230 FEET MSL
AIR TRACK
BORING AT-9
GEOCON
iMoonroMJLTma Marginal to
Non-
Rippable Rippable Non-Rippable
15
20
X 25
CL UJ
Q
30
35
40
45
50 —I—
10 20 30
—I 1 1 1—
40 50 60 70
DRILL RATE (seconds perfoot)
80 90 100 110
06403-12-01 LA COSTA GREENS FIG. A-177
06403-12-01
X 25
Q. LU Q
VILLAGES OF LA COSTA - THE GREENS
AIR TRACK
BORING AT-10
Marginal to
Non-
Rippable Rippable Non-Rippable
06403-12-01 LA COSTA GREENS
-I r
40 50 60 70
DRILL RATE (seconds perfoot)
r
80
11/29/99
ELEVATION
JMJPEET MSL
GEOCON
IMOORPORATSD
90 100 110
FIG. A-178
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/30/99
ELEVATTON
245 FEET MSL
10
15
0)
X h-Q.
UJ Q
25
30
35
40
45
50
AIR TRACK
BORING AT-11
Marginal to
Non-
Rippable Rippable Non-Rippable
_, 1 i , , i ,—
10 20 30 40 50 60 70
DRILL RATE (seconds per foot)
80
GEOCON
IMO O R P O RATS a
90 100 110
06403-12-01 LA COSTA GREENS FIG. A-179
06403-12-01 VILLAGES OF LA COSTA - THE GREENS
AIR TRACK
BORiNG AT-12
Marginal to
Non-
Rippable Rippable Noh-Rippable
06403-12-01 LA COSTA GREENS
40 50 60 70
DRILL RATE (seconds per foot)
11/29/99
ELEVATION
-26£F1EL^L
GEOCON
iMoo RPO aAvaa
80 90 100 110
FIG. A-180
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/30/99
ELEVATION
380 FEET MSL
10
30
35
40
45
50
AIR TRACK
BORING AT-13
Marginal to
Non-
Rippable Rippable Non-Rippable
10 20 30
—I—
50
—I—
70 40 50 60
DRILL RATE (seconds per foot)
80
GEOCON
INO O RPORATB D
90 100 110
06403-12-01 LA COSTA aREE^-S FIG. A-181
06403-12-01 VILLAGES OF LA COSTA - THE GREENS
AIR TRACK
BORING AT-14
Marginal to
Non-
Rippable Rippable Non-Rippable
06403-12-01 LA COSTA GREENS
-r
40 50 60 70
DRILL RATE (seconds per foot)
r
80
11/30/99
ELEVATION
385 FEFT MST
GEOCON
UfooarosATaD
90 100 110
FIG. A-182
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/30/99
ELEVATION
355 FEET MSL
AIR TRACK
BORING AT-15
GEOCON
IMOOliroftATBD .Marginal to
Non-
Rippable Rippable Non-Rippable
0)
a
X I-o.
Ol
Q
10
15
20
25
30
35
40
45
50
10 20 30
—I—
60
—I—
70 40 50
DRILL RATE (seconds per foot)
—I—
80 90 100 110
06403-12-01 LA COSTA GREEKS FIG. A-183
06403-12-01
VILLAGES OF LA COSTA - THE GREENS
AIR TRACK
BORING AT-16
Marginal to
Non-
Rippable Rippable Non-Rippable
30
06403-12-01 LA COSTA GREENS
40 50 60 70
DRILL RATE (seconds perfect)
11/30/99
ELEVATTON
-STSJ-SETMSL
GEOCON
laooaroAATaD
110
FIG. A-184
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/30/99
ELEVATION
380 FEET MSL
10
20
0)
X 25 I-0. LU
o
30
35
40
45
50
AIR TRACK
BORING AT-17
GEOCON
laooapoaATBD Marginal to
Non-
Rippable Rippable Non-Rippable
10 20 30
1 I
40 50 60 70
DRILL RATE (seconds per foot)
80 90
—r—
100 110
06403-12-01 LA COSTA GREENS FIG. A-185
APPENDIX
APPENDIX B
LABORATORY TESTING
Laboratory tests were perfijimed in accordance with the generally accepted test methods of the
American Society for Testing and Materials (ASTM) or other suggested procedures. Selected
relatively undisturbed drive samples and chunk samples were tested for their in-place dry density and
moisture content, shear strength, expansion and consolidation characteristics.
The results of our laboratory tests are presented in tabular and graphical forms hereinafter. The in-
place density and moisture characteristics are also presented on the logs on of test trenches and
borings.
TABLE B-l
SUMMARY OF LABORATORY MAXIMUM DRY DENSITY
AND OPTIMUM MOISTURE CONTENT TEST RESULTS
ASTM D 1557
Sample
No. Description Maximum Dry
Density (pcf)
Optimum Moisture
Content (% dry wt.)
LB 1-2 Yellowish brown, Silty, fine to coarse SAND 120.4 12.0
LB 1-11 Grayish green, Sandy CLAY 113.5 16.5
LB 3-3 (jreenish gray, Silty CLAY 112.2 17.0
LB 9-4 Greenish gray, Silty CLAY 115.8 15.4
LB 10-2 Light gray, Silty, fine SAND 114.0 14.2
T23-2 Dark grayish brown, Sandy CLAY 122.0 11.4
T24-2 Reddish browii. Clayey, fine SAND 123.0 U.O
T85-1 Dark olive-brown, Sandy CLAY 121.1 12.4
T108-1 Reddish brown, Silty, fine to medium SAND 123.9 10.0
ProjectNo. 06403-12-01 -B-l -March 24,2000
TABLE B-II
SUMMARY OF DIRECT SHEAR TEST RESULTS
Sample No. Dry Density
(pcf)
Moistare Content
(%)
Unit Cohesion
(psf)
Angle of Shear
Resistance (degrees)
LB 3-3* 100.5 17.7 610 27
LB 5-4 117.2 16.7 610 29
LB 10-2* 103.1 13.9 460 35
LB 1-3 124.8 10.8 1020 43
LB 1-4 112.2 20.2 830 15
LB 1-9 117.7 16.2 200 38
"Samples remolded to 90 percent relative density at or near optimum moisture content
TABLE B-III
SUMMARY OF LABORATORY EXPANSION INDEX TEST RESULTS
Sample
No.
Moisture Content Dry
Density (pcf)
Expansion
Index
Sample
No. Before Test (%) After Test (%)
Dry
Density (pcf)
Expansion
Index
LB 1-2 9 20.9 114.3 6
LB 18-9 11.3 30.3 105.1 57
LB 1-11 14.2 34.6 96.8 62
T 23-2 10.1 29.3 109.5 55
T85-1 10.0 28.9 110.1 57
T103-2 12.1 32.4 103.0 70
ProjectNo. 06403-12-01 •B-2-March 24,2000
PROJECTNO. 06403-12-01
GRAVEL SAND
SILT OR CLAY COf^RSE FINE riEDIUM FINE SILT OR CLAY
100
90
80
70
60
3" 1-1/2' 3/4"
U. S. STANDARD SIEVE SIZE
16 30 50
10 20 40 60 100 200
CO H lU
CO
Qi
g 50 H U.
^ 40
UJ u Qi
Ul 30
20
10
0
1 0.1
GRAIN SIZE IN MILLIMETERS
0.01 0.001
SAMPLE Depth (ft) CLASSIFICATION VAT WC LL PL PI
• SB3-2 10.0 (CL) YeUowish-brown. Sandy CLAY
CD SB4-2 10.0 (SM) Dark yellowish-brown, SUty SAND
• SB6-2 10.0 (SM) Dark yeUowish-orange, SUty SAND
GRADATION CURVE
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
LCG Figure B-l
PROJECTNO. 06403-12-01
GRAVEL SAND
SILT OR CLAY COARSE FINE COARSE MEDIUM FINE SILT OR CLAY
180 h
90
80
I 70
CD
3/8"
U. S. STANDARD SIEVE SIZE
16 30 50
20 I 40 60 100 200
60
lU
zz
IS
Qi
u 50
H U.
^ 40
UJ
u
UJ 30
20
10
0
10 1 0.1
GRAIN SLZE IN MILLIMETERS
0.01 0.001
SAMPLE Depth (ft) CLASSIFICATION '^ATWC LL PL PI
• SB7-3 15.0 (SM) Light olive-brown, SUty SAND
ca SB8-2 10.0 (CL) YeUowish-brown, Sandy CLAY
• SB8-4 20.0 (CL) Dark yeUowish-orange, Sandy CLAY
GRADATION CURVE
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
LCG Figure B-2
PROJECTNO. 06403-12-01
GRAVEL SAND
SILT OR CLAY COARSE FINE COARSE MEDIUM FINE SILT OR CLAY
^^3" 1-1/2" 3/4" 3/8" 100
90
80
ZC 70 CD H UJ
CO
Qi
u 50 H U.
K 40
UJ
u UJ 30 a.
20
10
0
U. S. STANDARD SIEVE SIZE
16 30 I 20 40 1 60 100 200
10 1 0.1
GRAIN SIZE IN MILLIMETERS
0.01 0.001
SAMPLE Depth (ft) CLASSIFICATION »JAT WC LL PL PI
SB 10-3 15.0 (SM) YeUowish-brown, SUty SAND 23.7
GRADATION CURVE
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
LCG Figure B-3
PROJECTNO. 06403-12-01
SAMPLE NO. SB3-3
o
H H <C Q H -J O cn z o
CJ
UJ
u
Qi UJ O.
-4
10
12 0.1 10 100
APPLIED PRESSURE (ksf)
Initial Dry Density (pcf) 107.0
Imtial Water Content (%) 22.6
Initial Saturation (%) 100-1-
Sample Saturated at (ksf) 0.5
CONSOLIDATION CURVE
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
LCG Figure B-4
PROJECTNO. 06403-12-01
a
H -I o z o u
Ui
u
Qi UJ
o.
SAMPLE NO. SB7-4
-4
6
10
12 0.1 10 100
APPLIED PRESSURE (ksf)
Initial Dry Density (pcf) 92.4
Initial Water Content (%) 5.4
Initial Samration (%) 18.1
Sample Saturated at (ksf) 0.5
CONSOLIDATION CURVE
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
LCG Figure B-5
PROJECTNO. 06403-12-01
o H 1-<L O H _l O Ui z o u
LU U Qi Ui 0.
SAMPLE NO. SB8-3
-2
10
12 _ 0.1 10 00
APPLIED PRESSURE (ksf)
Imtial Dry Density (pcf) 113.9
Initial Water Content (%) 18.2
Initial Samration (%) 100-t-
Sample Saturated at (ksf) .5
CONSOLIDATION CURVE
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
LCG Figure B-6
PROJECTNO. 06403-12-01
SAMPLE NO. SBlO-3
o H I-
a
H
o
Ui z o u
LU U Qi UJ O.
10
12 0.1 10 100
APPLIED PRESSURE (ksf)
Initial Dry Density (pcf) 106.7
Initial Water Content (%) 23.7
Initial Samration (%) 100-1-
Sample Samrated at (ksf) 0.5
CONSOLIDATION CURVE
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
LCG Figure B-7
PROJECTNO. 06403-12-01
o
H I-<c Q H _i O CO z o u
Ul
u
Qi LU O.
SAMPLE NO. SBl 1-2
-4
0
10
12 0.1 10 100
APPLIED PRESSURE (ksf)
Initial Dry Density (pcf) 116.5
Initial Water Content (%) 17.2
Initial Saturation (%) 100-(-
Sample Saturated at (ksf) .5
CONSOLIDATION CURVE
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
LCG Figure B-8
c
O
Oi
O z
o
S5
-1 < o
SAMPLE NO. SBS-3
2180
2200
2220
APPUED PRESSURE 2 (ksf)
2240 CO CD
I 2260
2280
_J <
2300
2320
2340
10 12
V TIME (Minutes)
SAMPLE NO. SB7-4
2370
^ 2380 c
T O
"C 2390
APPLIED PRESSURE 2 (ksf)
2400
2410
2420
2430
V
10 12
TIME (Minutes)
GEOCON O
INCORPORATED ^^tO^
GEOTECHNICAL CONSULTANTS
6960 FLANDERS DRIVE - SAN DIEGO, CALIFORNIA 92121 - 2974
PHONE 619 558-6900 - FAX 619 558-6159
TIME RATE CURVE GEOCON O
INCORPORATED ^^tO^
GEOTECHNICAL CONSULTANTS
6960 FLANDERS DRIVE - SAN DIEGO, CALIFORNIA 92121 - 2974
PHONE 619 558-6900 - FAX 619 558-6159
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
AS/RSS DSK/EOOOO DATE 03-24-2000 PROJECT NO. 06403 - 12 - 01 FIG. B-9
6403TR/RSS
SAMPLE NO. SB10-3 APPLIED PRESSURE
2425
(ksf)
o
CO o z
a
S5
-J
<
2455
2485
2515
2545
10 12
V TIME (Minutes)
SAMPLE NO. APPLIED PRESSURE (ksf)
o
CO
O z
Q
a:
-J <
0 2 4
VT
6 £
IME (Minutes)
i 10 12
GEOCON ^
INCORPORATED
TIME RATE CURVE GEOCON ^
INCORPORATED VILLAGES OF LA COSTA-THE GREENS
CARLSBAD, CALIFORNIA GEOTECHNICAL CONSULTANTS
6960 FLANDERS DRIVE - SAN DIEGO, CALiFORNIA 92121-2974
PHONE 619 558-6900 - FAX 619 558-6159
VILLAGES OF LA COSTA-THE GREENS
CARLSBAD, CALIFORNIA
AS / RSS DSK/EOOOO DATE 03-24-2000 PROJECT NO.06403-12-01 FIG. B-10
6403TR1 / RSS
CO CD z
Q
SS
-J <
Q
to CD
Z
o
55
-I
<
Q
SAMPLE NO. SB11 - 2
2320
^ 2330 c
O
Z 2340
APPLIED PRESSURE 2 (ksf)
2350
2360
2370
2380
\
\
N s
s
•>
V
12
TIME (Minutes)
SAMPLE NO. SB11 - 2
2410
APPLIED PRESSURE 4 (ksf)
2420
.£.
O
T" 2430
2450
2460
2470
2480
I. 1 Jl
s V
0 2 4 6 £
VTIME (Minutes)
1 10 12
GEOCON O
INCORPORATED ^SST
TIME RATE CURVE GEOCON O
INCORPORATED ^SST VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA GEOTECHNICAL CONSULTANTS
6960 FLANDERS DRIVE - SAN DIEGO, CALiFORNIA 92121 - 2974
PHONE 619 558-6900 - FAX 619 558-6159
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
AS / RSS DSK/EOOOO DATE 03-24-2000 PROJECT NO. 06403 - 12 - 01 FIG. B-11
6403TR2 / RSS
APPENDIX^ c
APPENDIX C
BORING AND TRENCH LOGS
AND CONE PENETROMETER TESTS
FROM
PRELIMINARY SOIL AND GEOLOGIC INVESTIGATION FOR LA
COSTA - NORTHWEST AREA, CARLSBAD, CALIFORNIA,
PREPARED BY GEOCON INCORPORATED, DATED NOVEMBER 11,
1988 (PROJECT NO. D-4230-H01)
And
PRELIMINARY RIPPABILITY STUDY, LA COSTA NORTHWEST,
CARLSBAD, CALIFORNIA, PREPARED BY GEOCON
INCORPORATED, DATED SEPTEMBER 25,1996 (PROJECT NO. D-
4230-12-03).
FOR
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
PROJECT NO. 06403-12-01
File No. D-4230-H01
November 11, 1988
BORING I
"ELEVATIGNL_il5. .DATE DRILLED.
EQUIPMENT E-IOO 30" Rotary Bucket
la zu: go
> K O
=8
MATERIAL OESCRIPTION
ALLUVIUM
Soft, wet, very dark brown, Sandy CLAY
Soft, wet, dark reddish-brown, Sandy
CLAY
•FUSE
12"
112.5
]iULK
16.6
SfellPLE
PUSH
• 12" 108.8
"^USH
- 12" L07.1
water table rising (caving)
I'ledium dense, wet, gray, slightly, Silty
fine to medium SAND
— 12" clean sand
Soft, wet, dark reddish-brown, Sandy CL.\Y
PUSH
'18" 97.3
BORKTG TERMINATED AT 21.0 FEET (REFUSAL)
Figure .A.-1, Log of Test Boring 1
19.6
•1.1
30.1
SAMPLE SYMBOLS SAMPLING UNSUCCESSFUL' D—STANOARO PENETRATION TEST 1 _ DRIVE SAMPLE (UN0ISTUR8E0) SAMPLE SYMBOLS SAMPLING UNSUCCESSFUL'
Z. WATER TABLE OR SEEPAGE OlSTURBEO OR BAG SAMPLE B_ CHUNK SAMPL€ Z. WATER TABLE OR SEEPAGE
NOTE THE LOG OFSUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY ATTHESPECIFICBCRING OH TRENCH LOCATION ANO ATTHE OATEINDICATEO. ITIS NOTWARRANTEDTOBEREPRESENTATIVEOFSUBSUHFACECONOtnCNSATOTHER LOCATIONS ANO TIMES
File No. D-4230-H01
November 11, 1988
BORING 2
ELEVATION 125 .DATE npiii pn 10/5/88
EQUIPMENT E-100 30" ?.otary Bucket
Pi
5gi
<i> is
Si
MATERIAL DESCRIPTION
ALLUVIUM
Soft, moist, dark brwrn, Sandy CLAY
becomes orange-yellcjw-brown, wet
becomes dark reddish-brown
strong seepage - water table caving
Loose, saturated, light brown, coarse
SAND
Soft, saturated, dark broTvn, Sandy CLAY
BOSING TERMINATED AT 14.0 FEET (REFUSAL)
PUSH
12" 10.1
BULK
16.5
$AM?L:
PUSH
12" 99.0 24.0
SAMPLE SYMBOLS SAMPLING UNSUCCESSFUL [j STANOARO PENETRATION TEST 1 _ DRIVE SAMPLE lUNOISTURBEO)
SAMPLE SYMBOLS
OlSTURBEO OR BAG SAMPLE B_ CHUNK SAMPL-E i — WATER TABLE OH SEEPAGE .
File NO. D-4230-H01
November 11, 1988
5 ,-
BORING 3
Fl FVATinN 155 .DATE npii 1 Fn 10/5/88
EQUIPMENT E-IQQ 30" Rotary Bucket z"l
zu: 25'
=E8
. 0 MATERIAL OESCRIPTION
CL
ALLUVIUM
Soft, wet, dark brown, Sandy CLAY
_ 2 -
- 4 -
. 6 .
8 -
10-
-12-
- 14-
-16-
-18-
-20-
B3-I
3C-CL
Loose, wet, light brown-orange, very
Clayey fine SAND
CL
Soft, wet to saturated, mottled olive-
orange, Sandy-Gravelly CLAY
B3-4 isolated 12" rock
- 22
DELMAR FORMATION
Hard, moist, medium olive, very Clayey
SILTSTONE, massive
•PUSH
12"
09.8 16.5
PUSH
1/3" 11.0
BULK
17.2
AMPLE
11
6" 13.2 17.4
.18.6
BULK
15.3
SAMPLE
BORING TERMINATED AT 22.0 FEET
Figure A-3, Log of Test Boring 3
SAMPLE SYMBOLS G _ SAMPLING UNSUCCESSFUL
S OlSTURBEO OR BAG SAMPLE
B—STANOARO PENETRATION TEST
Kl—CHUNK SAMPLE
I _ DRIVE SAMPLE (UNDISTURBED)
5- — WATER TABLE OR SEEPAGE
NOTE THE LOG OF SUBSURFACE CONOITICNSSHOWN HEREON APPLIES ONLY ATTHESPECIFICBCRING ORTRENCH LOCATION ANO ATTHE DATEINOICATEO, ITIS NOTWARRANTEDTO BE REPRESENTATIVEOFSUBSURFACECONOITIONSATOTHER LOCATIONS ANO TIMES
File No.
November
D-4230-H01
11, 1988
BORING 4
•"UJ ELEVATION. -120. .DATE DRILLED__JJU5Xaa.
EQUIPMENT E-100 30" Rotary Bucket
lk IO
zu: Si!!
51
I
f
f
I
MATERIAL OESCRIPTION
CL
ALLUVIUM
Stiff, moist, dark grayish-brown, Sandy
CIAY
B4-1 111. 15.7 n
becomes veity moist !
I
8 .
_ 10 .
B4-2
JB4-3
PUSH 103.c
12
14
16
- 18
_ 20
12'
20.;
strong seepage (in sand) water table (caving)| ULK S ^LE
SXJ
B4-4
Loose, saturated, light brovm, coarse
SAND PUSH
12 " 105.3
CL Soft, wet, dark brown, Sandy CLAY
21.:
BORING TERMINATED AT 20.0 FEET (REFUSAL)
Figure A-4, Log of Test Boring 4
SAMPLE SYMBOLS
• — SAMPLING UNSUCCESSFUL B —STANOARO PENETRATIOM
3 DISTURBED OR BAG SAMPtE S—CHUNK SAMPL£
TEST I — DRIVE SAMPLE (UNDISTURBED)
?- — WATER TABLE OH SEEPAGE
File No. D-4230-H01
November U, 1988
o z in tn— <ai
Ss
BOREIG 5
ELEVATION 120 .DATE DRILLED. 10/5/88
EQUIPMENT E-100 30" Rotary Bucket
Zu.
u}0
is
MATERIAL OESCRIPTION
CL
B5-1
- 4 .
- 6 .
_ 8 .
-10-
_ 12 _
14-
16 _
B5-2
B5-3
_ 18.
SW
CL
SW
ALLUVIUM
Soft, moist, dark brown, Sandy CLAY
becomes wet
strong seepage; water table (caving)
Loose, saturated, light brown, coarse
SAND
Soft, wet to saturated, meditm broxTn,
Sandy CLAY
Loose, saturated, light brown, coarse
SAND
BORING TERMINATED AT 18.0 FEET (REFUSAL)
•*USH
12" L02.6 10.3
1/12" LIO.8 19.0
1/12" L05.8 21.4
Figure A-5, Log of Test Boring 5
SAMPLE SYMBOLS n SAMPLING UNSUCCESSFUL B STANDARD PENETRATION TEST I — DRIVE SAMPLE (UNDISTURBED)
H OlSTURBEO OH BAG SAMPLE B _. CHUNK SAMPL€ WATER TABLE OR SEEPAGE
NOTE. THE LOG OFSUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY ATTHESPECIFICBCRING OR TRENCH LOCATION ANO
ATTHE DATE INDICATED. ITIS NOT WARRANTED TOBE REPRESENTATlVEOFSUBSURFACECONOmONS ATOTHER LOCATIONSANO TIMES
File No.
November
D-4230-H0I
11, 988
o z tn— Kta
BORING 6
ELEVATION—. 122 .DATE DRII LED 10/6/88
EQUIPMENT E-IQO 30" Rotary Bucket
Zu:
Ui'
Sa
Ss
I
I
J
I
i
I
I
I
1
J
I
I
I
I
. 0
2
4
6
8
- 10 -
- 12 -
- 14 -
- 16 -
- 18
MATERIAL OESCRIPTION
•r-li-IV TT
B6-1
B6-2
•KK-I.
•i:-L-!;'
I
B6-3
>:i-:iv
- 20 -
SM
ALLUVIUM
Loose to medium dense, humid, tan, silty
fine SAND with some clay
Medium dense, slightly moist, tan, Silty
fine SAND with little clay, small chunks
of alluvium in sandy matrix 106.7 13.8
111.0 18
110.4 18.
strong seepage (caving)
BORING TERMINATED AT 19.0 FEET
Figure A-6, Log of Test Boring 6
SAMPLE SYMBOLS
• SAMPLING UNSUCCESSFUL B—STANOARO PENETRATION TEST H — DRIVE SAMPLE (UNDISTURBED)
H DISTURBED OR BAG SAMPLE B — CHUNK SAMPLE ?• WATER TABLE OR SEEPAGE
J
1
I
NOTE THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY ATTWESPEaFICBORINO ORTRENCH LOCATION ANO ATTHE OATE INDICATED ITIS NOTWARRANTEDTO BE REPRESENTATIVEOFSUBSURFACECONOITIONSATOTHEH LOCATIONSANO TIMES
File No.D-4230-HOl
November 11, 1988
2 H
tn tn— <tn BORING 7
ELEVATION 300 .DATE DRILLED. 10/6/88
EQUIPMENT E-100 30" Rotary Bucket z"j u!ij^
zu.
ao is
Si
. 0 MATERIAL DESCRIPTION
A:AS
SM
2 _
4 .
6 .
8 -
- 10-
- 12 -
14 -
16
-18-
-20-
-12-
- 24 -
- 26 -
28 -
30
TORREY SANDSTONE
Loose, dry, tan, Silty fine SAJID
B7-1
Dense, damp, tan, Silty, fine to medium
I SANDSTONE, cemented
:^-t:i::
:i::i:-i;"
•\:i:-\-'i
T."-|'-"i:;
cobbles
becomes gray, less cemented
r
depositional contact: N30E75E
B7-2
/
ML Hard, moist, gray. Clayey SILTSTONE
y
B7-3
ft
- '•. y.
-. y. - - • .v.-.:. •
m
:>^-:-.-:
:----}/^ •:•.:/:: -. -y-
\'--y-
SC
Very dense, slightly moist, gray. Clayey
fine SANDSTONE
becomes light blush gray and slightly
cemented
—. becomes light greenish gray
mm "SH"
10/
6"
112.2 6.7
10/
11"
108.4 16.5
15/
6"
109.3 7.1
Figure A-7, Log of Test Boring 7 BORnrc CONTINUED NEXT PAGE
SAMPLE SYMBOLS D — SAMPLING UNSUCCESSFUL B—STANDARD PENETRATION TEST I — ORIVE SAMPLE (UNDISTURBED)
13 DISTURBED OR BAG SAMPLE B —CHUNK SAMPLE —WATER TABLE OR SEEPAGE
NOTE. THE LOG OF SUBSURFACE CONDtTIONS SHOWN HEREON APPLIES ONLY ATTHESPECIFIC BORING OH TRENCH L(3CATION ANO
ATTHE DATEINOICATEO. ITISNOTWARRANTEDTO BE REPRESENTATlVEOFSUBSURFACECONOmONSATOTHER LOCATIONS ANO TIMES
File No. D-4230-H01
November 11, 1988 I
0.512 u* IT
tn in— <in
BORING 7 (CONTINUED)
ELEVATION DATE npn I Pn lQ/6/88
EQUIPMENT .
zu.
uo
u'
c-
3Z >—
Ss
30.
32.
34-•\ '. . ' .•
36-
j- 38-
• •»
40-
42-
44-
46-
MATERIAL OESCRIPTION
B7-4
B7-5
\
•i.".i:
Dense, moist, greenish-gray, Silty fine
SANDSTONE
15/
6"
103.7 7.8
becomes light bluish-green gray
•1.- M.
JULK S(^Li
Strongly cemented
BORING TERMINATED AT 45.0 FEET
Figure A-8, Log of Test Boring 7
SAMPLE SYMBOLS n SAMPLING UNSUCCESSFUL
S OlSTURBEO OR BAG SAMPLE
B —STANOARO PENETRATION TEST
B —CHUNK SAMPLE
• — DRIVE SAMPLE lUNOISTURBEO)
?• — WATER TABLE OH SEEPAGE
NQT= 'HE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY ATTHE SPECIFIC BOHING ORTRENCH LOCATION ANO
A?THE DATErN07cATED.lT S^^^^^^
File No. D-4230-H01
November 11, 1988
o z
o z
in in— <in BORING 8
ELEVATION 305 .DATE DRILLED. 10/7/88
EQUIPMENT E-100 30" Rotary Bucket
SOf-
<<St
CCt->
>-inS
u;ui
^8
MATERIAL DESCRIPTION
4
6
La -
10 -
.1^
>14
16 _
18 _
_20 _
_22 .
-24 -
-26 .
-28
30
B8-4
•;i-:i:^-:
••i:-i-:>-:
.-I.VLVI-'.
B8-5
B8-6
.•;i-;iM-
••.i'l
• •K:':
•i-.'r.-i:
SM-GM
TERRACE DEPOSIT
Very dense, moist, light reddish-brown,
very gravelly Silty coarse SANDSTONE, grit
pebble size gravel. BULK SAMPLE
IE sharp depositional contact; N50W,15SW
SM
TORREY SANDSTONE .
Very dense, moist,- light tan, Silty fine
SANDSTONE, massive, some orange, laminated
thin beds
W
11" 116.9
BULK
7.3
SAMPLE
15/
10"
124.2 5.0
SM-SC
Very hard, moist, light tan, olive, orange,
Silty very fine SANDSTONE, some clay
bedding N45W,3NE
15 119.6
BULK
7.8
BAMPLEl
bedding N10E,8W
less clay
Figure A-r9, Log of Test Boring 8 BORING CONTINUED NEXT PAGE
SAMPLE SYMBOLS D SAMPLING UNSUCCESSFUL
IS DISTURBED OH BAG SAMPLE
B—STANDARD PENETRATION TEST
B_CHUNK SAMPLE
• — DRIVE SAMPLE (UNDISTURBED)
^ WATER TABLE OR SEEPAGE
NOTE THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY ATTHESPECIFIC BORING ORTRENCH LOCATION ANO
AT THE OATE INDICATED. IT IS NOTWARRANTEO TO BE REPRESENTATIVE OFSUBSURFACECONOmONS ATOTHER LOCATIONS ANO TIMES
File No. D-4230-H01
November 11. 1988
5 -o
X
<n
jO
BORING 8 (CONTINUED)
ELEVATION DATE DRILLED. 10/7/88
EQUIPMENT
Oo^-
in
^<ni
5g»
u'
2z
Si
30
32
34
36
38
-40 -
-42
-44
46
,48
-50
-52
MATERIAL DESCRIPTION
B8-7
B8-8
:-t-:i-'i.--
.•i:-i-:i-
SM .sharp depositional contact with hematite
band in sandstone, 1/8-1/2" wide, no
shearing N70E,11S
id
ML-MH Very hard, moist, light olive-green.
Clayey SILTSTONE 10 112.7 15.5
JULK SWIPLI
nearly horizontal
SM
Very dense, moist, light tan-white, Silty
fine SANDSTONE, cross-bedded and massive
:i.;r.rj
:,.:-i:.r
_ dark brown layer 6" thick above cemented
layer
cemented sandstone layer 12" thick, calcium
carbonate cement
BORING TERMINATED AT 51.0 FEET
Figure A-10, Log of Test Boring 8
SAMPLE SYMBOLS n — SAMPLING UNSUCCESSFUL
El — OlSTURBEO OR BAG SAMPLE
B—STANOARO PENETRATION TEST • _ DRIVE SAMPLE (UNDISTURBED)
B — CHUNK SAMPL€ * — ^ATER TABLE OR 3ggPAQ6
File No. D-4230-H01
November 11, 1988
5 -Ezu
in— BORING 9
245 ELEVATION. .DATE DRILLED. 10/6/88
EQUIPMENT E-100 30" Rotary Bucket U—5
zu. uo
a
u'
&:ui
58
- 0 MATERIAL DESCRIPTION
-2 -
4
6
B9-1
B9-2
- 8 -
- 10 -
- 12 -
- 14 -
B9-3
- 16 -
18 -
- 20 -
- 22 -
- 24 -
B9-4
- 26 -
- 28 -
30
vr:iH::
:;i;r:i::
•:I:M-.I:"
m
• •Kt:!:-
.•i:--i:-i.-.
SC TOPSOIL
Loose, damp, dark brown, Silty-Clayey
fine SAND
SM
ML
TORREY SANDSTONE
Dense, moist, light brown-orange, Silty
fine SANDSTONE, soifle clay, fracturing
mostly massive 114.6
BULK
15.1
AMPLE
nearly horizontal bedding
110.9 17.0
seepage, slow, spotty
seepage, slow
I, sharp depositional bedding/contact
horizontal 110.5 17.6
DELMAR FORMATION
Hard, wet, medium to light olive. Clayey
SILTSTONE, massive, little fracturing
Figure A-ll, Log of Test Boring 9 BORING CONTINUED NEXT PAGE
SAMPLE SYMBOLS n SAMPLING UNSUCCESSFUL
SI — DISTURBED OR BAG SAMPLE
B—STANDARD PENETRATION TEST I DRIVE SAMPLE (UNOISTUHBED)
B—CHUNK SAMPLE WATER TABLE OR SECPAQE
NOTE THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIESONLYATTHESPECinCBORING ORTRENCH LOCATICN ANO
ATTHE DATE INDICATED. IT IS NOTWARRANTEDTO BE HEPHESENTATIVEOFSUBSURFACE CONOITIONS ATOTHER LOCATIONS ANO TIMES
File No.
November
D-4230-H01
11, 1988 I
Ess
u Jr
a.
Z i
8
o
S3
1^
BORING 9 (CONTINUED)
ELEVATION DATE DRILLED. in/fi/FlR
EQUIPMENT
Zui
*-*nS
zu. uo Oo.
u#
is
MATERIAL OESCRIPTION
CL-ML
Hard, moist, dark gray-olive, Silty
CLAYSTONE to very Clayey SILTSTONE,
contains lignitic material
10 15.0 15.1
BULK ! AMPLE
BORING TERMINATED AT 35.0 FEET
Figure A-12, Log of Test Boring 9
SAMPLE SYMBOLS
O SAMPLING UNSUCCESSFUL
IS — DISTURBED QR BAG SAMPLE
B—STANOARO PENETRATION TEST
B —CHUNK SAMPL€
I DRIVE SAMPLE (UN0I3TUHBC0)
S- _ WATER TABLE OW SEgPAOB
NOTE THELOG OFSUBSURFACE CONOmONSSHOWNHEHEONAPPLIESONLYATTHESPECIFICBOHINQOHTHENC^^
ATTHE DATE INOiCATM
File No. D-4230-H0I
November 11, 1988
BORING 10
ELEVATION. 150 .DATE nRILLFD 10/6/88
EQUIPMENT T?-inn -^n" p^t-,^,
>-<na z<»2 uga
t 3 zu:
Uo
Oa.
2i=
OS 38
MATERIAL OESCRIPTION
UNDOCUMENTED FILL
Loose to medium, damp, medium-dark brown,
mottled Silty, Clayey fine SAND
122.0
BULK
8.3
SAtlPLE
Soft, wet, dark-medium olive-brown, mottled
Sandy CLAY
Irregular, but sharp fill/formation contact
slopes in SE direction no debris or strong
odors
DELMAR FORMATION
Dense, moist, light tan-olive, medium to
coarse, Silty SANDSTONE
Irregular, but sharp deposition-contacts,
nearly horizontal
Hard, moist, medium olive-green, Silty
CLAYSTONE, massive, blocky
_6-8" calcium carbonate cemented layer
1^ becomes medium, light olive, more fractured
(I random slickensided surfaces
127.6 8.8
14 L22.1
BULK
12.6
AMPLE
jl— slight seepage
Figure A-13, Log of Test 10 BORING CONTINUED NEXT PAGE
SAMPLE SYMBOLS Q SAMPLING UNSUCCESSFUL
S — DISTURBED OR BAG SAMPLE
B—STANDARD PENETRATION TEST
B — CHUNK SAMPt.€
• — OniVE SAMPLE (UNOISTUHBIDl
Z. WATER TABLE GR SSEMGE
NOTE THE LOGOFSUBSURFACE CONDITIONS SHOWN HEREON APPL1ESONLYATTHESPECIF1CBORINGORTR€NC«LOCAT10NANO
ATTHE DATE INOICATEU ITIS NOTWARRANTEO TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONSATOTHERLOCATICNSANO TIMES
File No. D-4230-H01
November 11, 1988
a. 2
3i
'is BORING 10 (CONTINUED)
ELEVATION DATE DRILLED.
EQUIPMENT.
Zui
Eini zu:
u' is" ss
Si
30 MATERIAL DESCRIPTION
32 .
34.
36 -
BORING TERMINATED AT 35.0 FEET
Figure A-14, Log of Test Boring 10
SAMPLE SYMBOLS O — SAMPLING UNSUCCESSFUL '
S DISTURBED OR.BAG SAMPLE
B—STANOARO PENETRATION TEST
B —CHUNK SAMPLE
• ... DRIve SAMPLE (UNOISTUMID)
S> ^ WATER TABLE OR SESMOt
NOTE THE LOG OFSUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY ATTHE SPECIFICBCRING 0«™ENCH LOCATTON
ATTHE DATE INDICATED. ITIS NOTWARRANTEO TO BE REPRESENTATIVEOF SUBSUHFACECONOITIONS ATOTHER LOCATIONSANO TIMES.
File No. D-4230-H0I
November 11, 1988
BORING 11
ELEVATION 300 .DATE DRILLED. in/in/aa
EQUIPMENT K-inn. -^0" Bnt-ar-p- BnnVo^
>-«>>
z>»2
Zu: uo Oo.
u#
2Z
SK
28
MATERIAL OESCRIPTION
-2 -
511-1
1-4 -I
6
8 -I 311-2
-10 -
12 -
- 14 -
- 16 -
-18 -
-20 -
r22 -
U24 -
-26 -
-28 -
311-3
Bll
•.•l,--l-:i-;
Bll-5
CL
TOPSOIL
Soft, moist, dark brown. Gravelly CLAY
•PUSH
JO"
1/4"
104.9 20.1
CL-CH
DELMAR FORMATION
Soft, moist, light olive mottled white,
Silty CLAYSTONE, highly fractured,
weathered
.PUSH
6"
•2/6"
96.5 26.5
BULK £A1G»LE
gypsum seam in bedding N50E,22NW, potential
shear filling
becomes firmer, with yellow-green,banding
mottling
bedding-plane shear N5SE,15NW, h" remolded
slickensided orange/olive clay with
gypstim, throughgoing
106.8 20.8
becomes harder, blocky
sharp depositional contact, but with thin
1/16" orange remolded clay seam, N50W,6*'SW
Moist to wet, light olive-tan, slightly
Silty coarse SANDSTONE
strong seepage
becomes clean sand
rocks 123.6 11.6
JO.
Figure A-15, Log of Test Boring 11 BORING CONTINUED NEXT PAGE
SAMPLE SYMBOLS D — SAMPLING UNSUCCESSFUL
S DISTURBED OH BAG SAMPLE
B —STANOARO PENETRATION TEST
B— CHUNK SAMPLE
I — DRIVE SAMPLE (UNDISTURBED)
^ — WATER TABLE OR SEEPAGE
NOTE THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY ATTHE SPECIFICBCRING OH TRENCH LOCATION AND
ATTHE DATE INDICATED. ITIS NOTWARRANTEO TO BE REPRESENTATIVEOFSUBSURFACECONOmONSATOTHER LOCATtCNS AND TIMES
File No. D-4230-H01
November 11. 1988 I
•E -
O z in
in— BORING 11 (CONTINUED)
ELEVATION DATE DRILLED. 10/10/88
EQUIPMENT
u<SO
zu. uo
o2
u^
Ss
a"
28
-30 MATERIAL OESCRIPTION
A',
-32 _ r contact not visible because of water
SANTIAGO PEAK VOLCANICS
Very dense, moist, dark brown, gray, green
porphyritic VOLCANIC ROCK, slight to
moderate fracturing
BORING TERMINATED AT 31.5 FEET (REFUSAL)
Figure A-16, Log of Test Boring 11
SAMPLE SYMBOLS n SAMPLING UNSUCCESSFUL
K DISTURBED OH BAG SAMPLE
B—STANDARD PENETRATION TEST
B —CHUNK SAMPLE
• — DRIVE SAMPLE (UNDISTURBED)
?. WATER TABLE OR SEEPAGE
NOTB THE LOG QF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLYATTHE SPECIFIC BORING ORTRENCHJ-OCATION ANO
A°HVOATE?NOTCAT^DJTISW^^^^
File No.
November
D-4230-H01
11, 1988
153 3
3"
BORING 12
Fl FVATION 215 .DATE DRILLED Tn/7/3fl
EQUIPMENT E-100 30" Rotary Bucket
Sv
^in9
5g«
t
in
Zu.
U''
15 oS ^8
MATERIAL DESCRIPTION
- 2 _
- 4 -
- 6 -
- 8 -
- 10-
- 12-
_ 14.
- 16.
-18-
-20-
-22-
- 24-
•l-Vl'.
SM
TORREY SANDSTONE
Dense, moist, tan, Silty fine SANDSTOSIE
••k.l'.i-.:
B12-
B12-r
nearly horizontal depositional contact
•2 aL-CL
/
DELMAR FORMATION
Hard, moist, olive-orange, mottled.
Clayey SILTSTONE
— bedding horizontal
107.0
BULK
20.3
SIAMPLE
B12-3
B12-4
- 26-
I--I.'
• I--.'-:!
••.I.-'.-
• I.I.-
SM
Dense, moist, light olive-tan, Silty
fine to medium SANDSTONE, interbedded
thin siltstone beds 116.0 8.0
•I.M i-l
•i.;i.-i.
•I-f. 1-
.••r.-i -1.
iVi-
•.l-r.-. cemented zone
5/
5" 111.6 9.3
1 I
I
CL Very hard, moist, olive mottled with
yellow-orange, Silty CLAYSTONE
\— cemented zones
becomes brown - olive
BORING TEHMINATED AT 25.0 FEET
Figure A-17, Log of Test Boring 12
SAMPLE SYMBOLS Q — SAMPLING UNSUCCESSFUL
S DISTURBED OH BAG SAMPLE
B —STANOARO PENETRATION TEST
B —CHUNK SAMPLE
1 — DRIVE SAMPLE (UNOISTURBEOI
^ — WATER TABLE OR SEEPAGE
NOTE TH E LOG OF S U8SU RFACE CONOITIONS SHOWN HEREON APPLIES ONLY ATTH E SPECIFIC BORING OR TRENCH LOCATION ANO AT THE DATE INDICATED. ITIS NOTWARRANTEDTO BE HEPHESENTATIVEOFSUBSURFACE CONDITIONS ATOTHERLOCATIONS AND TIMES
File No. D-4230-H01 I
a.
in in— <tn BORING 13
ELEVATION__32L .DATE riRii I pn 10/10/88
EQUIPMENT E-100 30" Rotary Bucket
U —O
ZU.
uo
u'
Ss
io
MATERIAL OESCRIPTION
2 _
4 _
e'.
8 -
10-
- 12.
- 14.
B13-1
•:r.-
E
*.•!'••.
r.:r."
V.r.-.
•:v.
- 16
- 18
- 20
- 22
24
26
B13-
B13-•3 I:
;i;:
•1;
••J.
4B 13-4 1/
:i-".
•••I.
28
30 •:•!•
.i:
••I-
SM-ML
TORREY SANDSTONE
Dense, moist, light tan, Silty very fine
SANDSTONE, to Sandy SILTSTONE; laminated
to massive with orange banding
V_Jjedding N45W,7SW 15.9 7.0
r contact sharp, N45W,15*'SW
ML
Hard, moist, light olive-tan. Clayey
SILTSTONE
Dense, moist, light tan, Silty very fine
SANDSTONE to Sandy SILTSTONE, laminated
to massive
SM-ML 11 113.7
BULK
16.0
dAMPL: 1
- 11 112.1 10.5
greenish-gray zone I
1
I
Figure A-18, Log of Test Boring 13 BORING CONTINUED NEXT PAGE
SAMPLE SYMBOLS n — SAMPLING UNSUCCESSFUL
13 — OlSTURBEO OR BAG SAMPLE
B—STANOARO PENETRATION TEST
B CHUNK SAMPLE
I — DRIVE SAMPLE (UNDISTURBED)
?• — WATER TABLE OR SEEPAGE
TUP LOG QF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY ATTHE SPECIFIC BORING ORTRENCH LOCATION AND
^TTHE DATE?NO?CATED^Vrs NOT^^^
I
File No. D-4230-H01
November 11, 1988
X .
a. Z
Si
is
rto
fi
BORING 13 (CONTINUED)
ELEVATION DATE DRILLED.
EQUIPMENT
£5? po
SE"
zu: «P
UJ ^
aw
OS
38
- 30 MATERIAL OESCRIPTION
- 32 -
- 34
36 -
38 -
- 40 -
- i^Z -
- 44 -
- 46 -
- 48 -
- 50 -
- 52 -
- 54 -
'.K
:\':
v.
'••-I:'
slight seepage
slight seepage
•V. •bedding horizontal
B13-5
B13-6
B13-7 t
- 56
-j.y.
y.
r.
ML
If-
"Strong seepage
— sharp deposition contact, nearly horizontal 106.1 19.8
DELMAR FORMATION
Hard, moist, dark olive to brown, very
Clayey SILTSTONE, calcium carbonate
cemented lenses
dark brown cemented fossil zone approx.
8" thick
30/
7" 138.6
BULK
6.8
!A1-IPLE
HL-CL £ horizontal beds
Very hard, dark greenish-gray to gray.
Clayey to Sandy SILTSTONE; scattered coal
fragments, carbonaceous
BORING TERMINATED AT 56.0 FEET
Figure A-19, Log of Test Boring 13
SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL ' B STANOARO PENETRATION TEST I — DRIVE SAMPLE (UNDISTURBED)
?• — WATER TABLE OH SEEPAGE ^ — DISTURBED OR BAG SAMPLE B — CHUNK SAMPLE
NOTE THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES CNLY ATTHE SPECIFIC 80HING0RTHENCH LOCATION AND ATTHE DATE INDICATED ITISNCTWABRANTED TO BE REPRESENTATIVEOFSUBSUHFACECONDITIONSATOTHEHLOCATIONS ANO TIMES
File No. D-4230-H01
November 11, 1988 I
in
in —
BORING 14
ELEVATION. 245 .DATE npiiipn 10/12/88
EQUIPMENT E-100 30" Rotary Bucket
zu: SO ii
Si
MATERIAL OESCRIPTION
:-r"-i'.V.".
10
- 20.
- 22.
24.
- 26.
- 28.
30
B14-4
SM
CL
DELMAR FORMATION
Dense, moist, light tan, Silty medium to
coarse SANDSTONE, massive friable
21.1 6.6
roots
Hard, moist, light-medium olive-green,
very Sandy CLAYSTONE, fractured with
random slickensides surface
fractured on north side of hole, no
continuous plane
119.4
iULK
14.3'
SlAMPLE
becomes light gray and less fractured
becomes dark gray 119.0 14.
Figure A-20, Log of Test Boring 14 BORING CONTINUED NEXT PAGE I
I
I
SAMPLE SYMBOLS Q SAMPLING UNSUCCESSFUL
13 DISTURBED OH BAG SAMPLE
B STANDARD PENETRATION TEST
B —CHUNK SAMPLE
• — ORIVE SAMPLE (UNDISTURBED)
— WATER TABLE OR SEEPAGE
URITE TWC I NR. NP«IM<5UHFACECQNDIT10NS SHOWN HEREON APPLIESONLY ATTHESPECIFIC BORING OHTRENCHLOCATION AND
AT°THVOATE?NO?CATEDJV,SNO^^^^^^
File No. D-4230-H01
November 11, 1988
r ^ . BORING 14 (COOTINUED)
ELEVATION DATE DRILLED.
EQUIPMENT .
S"
in
zu.
SP
IU* E..-2z Ss OS
'8
30
32
34
36
38
40
MATERIAL DESCRIPTION
CL
becomes more sandy
CL-CH
j_ 44
Very hard, moist, medium olive-green,
Silty CLAYSTONE
sandstone lenses with seepage
undulating contact, dipping approximately
5" at slope
:-fA-y
SM
Very dense, moist, orange-tan, Silty fine
to medium SANDSTONE, fining upwards
sequence
.becomes medium-grained, has "cannonball"
concretion on N side of hole
t 46
L 48.
I-
i. 50_
C 56J
r 60
B14-8
£
becomes coarse to very coarse
rip-up clasts
contact irregular, channeled
SM-ML
Hard, moist, gray-blue, very Sandy
SILTSTONE
Very dense, slightly moist, orange tan,
Silty fine to coarse SANDSTONE
. scour surface approximately N25E20NW,
slight seepage
SM
Stiff, very moist, gray-blue with iron
staining, Sandy SILTSTONE, fractured near
top, no through going remolded zone
ML
13 119.5 13.6
21/
10"
128.7 9.8
JULK SAMPLE
15/
7"
L26.7 10.6
Figure A-21, Log of Test Boring 14 BORING CONTINUED NEXT PAGE
1 SAMPLE SYMBOLS ^ - UNSUCCESSFUL
1 S DISTURBED OR BAG SAMPLE
B-
B-
STANDARD PENETRATION TEST 1 — DRIVE SAMPLE (UNDISTURBED)
CHUNK SAMPLE \ — WATER TABLE CR SEEPAGE
NOTE THE LOG OF SUBSURFACECONDITIONS SHOWN HEREON APPLIES ONLY ATTHESPECIFIC BOHING ORTRENCH LOCATION AND
ATTHE DATE INOICATEO, ITIS NOTWARRANTEO TO BE REPHESENTATIVEOFSUSSURFACE CONDITIONS ATOTHER LOCATIONSANO TIMES
File No. D-4230-H01
November 11, 1988
u r; Z
o z li
in
BORING 14(CONTINUED)
ELEVATION DATE noil i Fn 10/12/88
EQUIPMENT
I
1^?
Isi
S«2
zu.
uo
o2
E>--3Z
SS
Si
60
62 -
I- 64 -
66
1-68-1
70
MATERIAL OESCRIPTION
B14-9
B14-
CL
Hard, moist, olive green, Silty CLAYSTONE
with shiny parting surfaces 14 15.0
BULK
6.7
SAMPLE
ML
Hard, moist, gray blue, very clayey
SILTSTONE with trace fine sand, fissile
V BORING TERMINATED AT 70.0 FEET
Figure A-22, Log of Test Boring 14
SAMPLE SYMBOLS D SAMPLING UNSUCCESSFUL '
El DISTURBED CR BAG SAMPLE
B—STANDARD PENETRATION TEST
B —CHUNK SAMPL£
• — DRIVE SAMPLE (UNDISTURBED)
1 WATER TABLE OH SEEPAGE
NOTE THELOGOFSUBSURFACECONOITIONSSHOWN HEREON APPLIESONLYATTHESPECIFICBOHINGOHTHENCH^
AfTHEDATETNoTcATEaa
File No. D-4230-H01
November 11, 1988
BORING 15
ELEVATION. 305 .DATE npiLi Fn 10/12/88
EQUIPMENT 30" Rotary Bucket
*-inS
gag
zu:
uo
oS
u'
s..-
OS
=8
MATERIAL DESCRIPTION
TOPSOIL
Hard, slightly moist, brown, Sandy CLAY
with SILT fractures
DELMAR FORMATION
Hard, moist, light olive, Silty CLAYSTONE
to very Clayey SILTSTONE
Bedding nearly horizontal
Bedding N60W, SSW
Hard, moist, light orange/olive-mottled.
Clayey SILTSTONE; some very fine SAND
Bedding nearly horizontal
, Hard, moist, olive-mottled, Silty CLAYSTONE;
yellow-white gypsum stringers; slight to
moderate fracturing
Few steep hematite-filled fractures;
N40E, 85SE (joints)
Cemented zone (calcium carbonate cement
' about 12" fossil shells)
Remolded CIAY seam 1/8-1/4" thick; N60E
2"'S
Dense, moist, light olive-tan Silty
fine to medium SANDSTONE; some CLAY
3/12" 107.9 18.3
3/12" 108.4 19.5
BULK liAMPLE
2/0" (No sample)
3 LIS.2 13.8
Figure A-23, Log of Test Boring 15 (Boring 15 Continued next page)
SAMPLE SYMBOLS Q — SAMPLING UNSUCCESSFUL B STANOARO PENETRATION TEST
S—, OlSTURBEO OH BAG SAMPLE -B —CHUNK SAMPLE
I DRIVE SAMPLE (UNOISTURBEOI
Z. _ WATER TABLE OR SEEPAGE
NOTE THE LOG OFSUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY ATTHESPECIFICBCRING ORTRENCH LOCATION ANO
AT THE OATE INDICATED, IT IS NOTWARRANTEO TO BE REPRESENTATIVE OF SUBSURFACECONDITIONS ATOTHER LOCATIONS ANO TIMES
File No. D-4230-H01
November 11, 1988
BORING 15 (Continued)
ELEVATION DATE DRILLED 10/12/88
EQUIPMENT 30" Rotary Bucket
2<J|-
zu: UJO
OQ. >. c o
m*
El--
25
inS OS =8
MATERIAL OESCRIPTION
Hard, moist, olive-brown mottled Silty, Sandy
CLAYSTONE
Remolded CLAY seaai 1/8-1/4" thick;
3*SW; throughgoing gypsum
Hard, moist, medium-olive, silty CLAYSTONE;
abundant gypsum seams; random fracturing
Remoded CLAY seam 1/8-3/4" thick; NlOW,
S'SW, throughgoing, \rLth. large crystals
of gypsum within gouge
Dense, moist, light orange-tan, medium
SANDSTONE
C Contact nearly horizontal; sharp
depositional
Hard, moist, dark olive-brown mottled with
yellow, Silty CLAYSTONE; gypsum seams, random
fracturing; fossiliferous and carbonaceous
" Becomes very dark olive/black and
carbonaceous, seepages of slight to moderate
^ flow
(""Remolded CLAY seams 1/4-1/2"; N20W,5"'SW
I at contact
_ 5 106.6
PBULK J
20.f
AMPL:
92.0
[BULK
29.1
AMPL
Very dense, dark gray, cemented, fine Silty
SANDSTONE; fossiliferous
Cemented zone; CaC02+
BORING TERMINATED .\T 59 FEET (REFUSAL)
Figure A-24, Log of Test Boring 15 |
SAMPLE SYMBOLS • -SAMPLING UNSUCCESSFUL'
(3 — DISTURBED OR BAG SAMPLE
B —STANDARD PENETRATION TEST
B — CHUNK SAMPLE
1 — ORIVE SAMPLE (UNDISTURBED)
^ — WATER TABLE OR SEEPAGE |
NOTE THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY ATTHE SPEOFIC BORING ORTRENCH LOCATION AND
ATTHE DATE INOICATEO, ITIS NOTWARRANTEO TO BE HEPHESENTATIVEOFSUBSURFACE CONOITIONSATOTHER LOCATIONS AND TIMES
File No. D-4230-H01
November 11, 1988
isS
u-u
8
O
«—
"1^
BORING 16
ELEVATION. 300 .DATE npiiiFn 10/13/88
EQUIPMENT E-100, 30" Rotary Bucket
>-<nS
uga
zw uo
OQ.
u*
Ss
zo
•*o
[
MATERIAL DESCRIPTION
CL
- 2 -
- 4 -
6 -
- 8 -
- 10 -
- 12 -
- 14 -
- 16
-18-
-20-
-22-
24
- 26
- 28i
;.i:i;-l-v
•c • • / <-
W-l
\TOPSOIL
}j hard, humid, brown, Sandy CLAY, highly
I fractured
— becomes very stiff and slightly moist
SM ll — —— —
ijDELMAR FORMATION
11 Very dense, humid, light gray-blue, very Silty
I' fine SANDSTONE; iron-stained, carbonate,
11 weath^^ng at top
I
bedding N20W10S
— strongly iron-stained
B16-1
. ,A
ML hard, slightly moist, light grey-blue.
Clayey SILSTONE, iron-stained, fissile,
hematite filled joint N4SE82E
layer of stiff, moist, orange Sandy SILTY,
friable, fossiliterous; N20W10S
bottom contact
iron-stained, Sandy with fossils
•PUSH
7" .
1
93.4 29.5
B16-2
••i-r-"-.i-:
;.i->-"
SM
stiff, moist, orange-brown. Clayey SILT,
fossiliterous,
- cemented lenses
- iron-stained, fossiliterous, rip-up clast
of grey-blue SILSTONE
10 118.0 14.0
scour contact
very dense, humid, light tan, very Silty
fine SANDSTONE, iron-stained in places
V,
l'— iron-stained
\ thinly bedded, dipping approximately lO^S
— iron-stained, lenses of friable, organic
rich SILT with gypsum stringers
Figure A-25, Log of Test Boring 1^ (Boring 16 continued next page)
SAMPLE SYMBOLS •-^-"^'"^ UNSUCCESSFUL "
S — DISTURBED OR BAG SAMPLE
B-
B-
STANDARD PENETRATION TEST 1 — ORIVE SAMPLE (UNOISTUHBED)
CHUNK SAMPLE WATER TABLE OR SEEPAGE
NOTE THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY ATTHE SPECIFIC BOHING ORTRENCH LOCATION AND ATTHE OATEINOICATED ITIS NOTWARRANTEDTO BE REPRESENTATIVEOF SUBSURFACE CONOITIONSATOTHER LOCATIONSANO TIMES
File No.
November
D-4230-H01
U, 1988 I
BORING 16 (Continued)
ELEVATION DATE npii i Pn 10/13/88
EQUIPMENT ,
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15' Su» u>>-oS =8
MATERIAL DESCRIPTION
scoured contact, generally horizontal
BULK SAMPL.
hard, slight moist to moist, light blue-grey
il Sandy SILSTONE I
very stiff, moist, reddish-brown, Silty
i CLAYSTONE
many non-continuous remolded planes with
gypsum, general orientation N5W7S
continuous medium stiff, very moist, grey
remolded CLAY N30W5S
becomes .organic rich, gypstna and
sulfur-rich
15 17.8
BULK
15.1
BAMPL: I
very dense, very moist, grey Silty fine to
medium SANDSTONE, slight seepage
very strong cemented
BORING TERNIINATED AT 40 FEET (REFUSAL)
Figure A-26, Log of Test Boring 16 I
• - SAMPLING UNSUCCESSFUL .B -STANDARD PENETRATION TEST • - DRIVE SAMPLE (UNDISTURBED)
SAMPLESYMBOLS „ n • ui.rea TARI B oa sesPAGE
H — DISTURBED OH BAG SAMPLE B — CHUNK SAMPL-E ^ — WATER TABLE OR SEEPAGE 1
I
NOTE THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY ATTHE SPECIFIC BORING 0«TRENCH LOCATION AND
A?THE0ATE°NO°CATE0.1T^
File No. D-4230-H01
November U, 1988
8
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ELEVATION. DATE DRILLEO 10/13/88
EQUIPMENT E-100, 30" Rotary Bucket
Qo»—
•-<0>
S«2
uSSo
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SP
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EM' 25 «s
Ss
MATERIAL DESCRIPTION
- 2 -
- 4 -
B17-1
6 -
- 8 -
10 -
- 12 -
- 14 -
- 16 -
- 18 -B17-2
B17-3
20 -
22
- 24 •
26 -
- 28 -
• I--I.-L
CL TOPSOIL
Soft,, dry, dark brown Sandy CLAY
CL
DELMAR FORMATION
Hard» moist, light olive-brown mottled
Sandy-Silty CLAYSTONE; abundant gypsum
SM-
SC
contact bedding N10E10W7
Dense, moist, light tan-olive Silty-Clayey
coarse SANDSTONE
CL Hard, moist, light olive Sandy CLAYSTONE;
highly fractured, multiple oriented
slickensided surfaces
SC-
SM
Dense, moist, light tan-orange Silty fine
to medium SANDSTONE
SM Dense, moist, light tan-orange Silty fine
to medium SANDSTONE
bedding N40W, 9''NE
111.2 17.1
9 124.5 11.9
Figure A-27, Log of Test Boring 17 BORING CONTINUED NEXT PAGE
SAMPLE SYMBOLS ^" "''SUCCESSFUL '
^ — DISTURBED OR a«G SAMPLE
B-
B-
STANDARD PENETRATION TEST 1 — DRIVE SAMPLE lUNOISTURBEO)
CHUNK SAMPLE ^ — WATER TABLE OH SEEPAGE
NOTE THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIESONLYATTHESPECIFICBOHINGOHTRENCH LOCATION ANO
ATTHE OATEINOICATED, ITIS NOTWARRANTEO TO BE REPRESENTATIVEOFSUBSUHFACECONOmONSATOTWER LOCATIONS AND TIMES
File No. D-4230-H01
November 11, 1988 I
a. Z
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BORING 17 (CONTINUED)
is
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EQUIPMENT .
23c
£S? zu. uo
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30
32
34
36
38
- 40 -
MATERIAL DESCRIPTION
B17-4
>:i::i;-
i;-r;i:
becomes moist to wet
SM
CL
M strong seepage
irregular contact; remolded CLAY seam,
E-W, S'N; throughgoing
Hard„ moist-wet, medium to dark-olive,
Sandy CLAYSTONE
\ remolded CLAY seam 1/8-1/4" thick, N45E,
12''SE BULK 3AMPL
- 42 BORING TERMINATED AT 42 FEET
Figure A-28, Log of Test Boring 17
SAMPLE SYMBOLS D — SAMPLING UNSUCCESSFUL
H DISTURBED OR BAG SAMPLE
B—STANOARD PENETRATION TEST
B —CHUNK SAMPLE
• — DRIVE SAMPLE (UNOISTURBEOI
?. — WATER TABLE OH SEEPAGE
NOT= THE LOG QF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY ATTHE SPECIFIC BOHING ORTRENCH LOCATION AND
AT°TH1 OATE?NO?CATE"VIS N^^^^^^
File No. D-4230-H01
November 11, 1988
2 -S
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ELEVATION 110
EQUIPMENT
DATE DRILLED.
JD555 24" Track Backhoe
10/10/88 lit
UiO Ot
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MATERIAL DESCRIPTION
2 -
4 -
6
8
10 -
12 -
Vl:
•'•'.'•I'
'M}i
:i:-c:
•iO'
•jvi:
CL
SM
SM
COLLUVIUM
Hard, slightly moist, dark gray, Silty
CLAY, with fine sand, highly fractured
DELMAR FORMATION
Dense, humid, light olive, Silty fine
SANDSTONE, highly fractured, carbonate
\ in joints
\
Very dense, humid, light olive, Silty fine
SANDSTONE, with areas of fine to coarse
sand, iron staining
becomes tan, fine to medium coarse
WEATHERED SANTIAGO PEAK
Hard, slightly moist, olive and brown,
Sandy CLAY with unweathered chunks of
SANTIAGO PEAK, some shiny parting surfaces
TRENCH TERMINATED AT 11.0 FEET
^igure A-29 Log of Test Trench 1
SAMPLE SYMBOLS Q SAMPLING UNSUCCESSFUL
t3 — DISTURBED OR BAG SAMPLE
B —STANOARD PENETRATION TEST
B —CHUNK SAMPLE
• — DRIVE SAMPLE (UNDISTURBED)
Z. — WATER TABLE OR SEEPAGE
NOTE THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY ATTHESPECIFICBORING ORTRENCH LOCATION AND ATTHE OATE INDICATED. IT IS NOTWARRANTEO TO BE REPRESENTATIVE OFSUBSURFACE CONOITIONS ATOTHER LOCATIONS ANO TIMES
File No. D-4230-H01
November 11, 1988
o "
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TRENCH 2
ELEVATIO N_ 275 .DATE npiiiPn 10/10/88
EQUIPMENT JD555 24" Track Backhoe
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MATERIAL DESCRIPTION
2 _
4
6
- 8 -
r. V.
CL
COLLUVIUM
Hard, damp, dark broxm, Sandy CLAY and
Santiago Peak boulders
•CE W.
0
GC
WEATHERED SANTIAGO PEAK
Very firm, moist, brown, Sandy CLAY, with
pieces of Santiago Feak
-.0, SANTIAGO PEAK
Excavates to very dense, damp, orange-tan.
Clayey COBBLES with some samd and boulders.
Santiago Peak jointed with some surfaces
dipping out of slope
TRENCH TERMINATED AT 7.5 FEET
TRENCH 3 Elev. 245'
- 0
- 2 -
- 4 -
- 6 -
CL COLLUVIUM
h Hard, humid, gray, Sandy CLAY with some
I \ Santiago Peak cobbles CL I \
^y GC
A
Very stiff, very moist, dark brown, Sandy
CLAY with some Santiago Peak cobbles
SANTIAGO PEAK
Excavates to very dense, moist, green and
orange. Clayey COBBLES
TRENCH TERMINATED AT 5.0 FEET
Figure A-30 Log of Test Trenches 2 and 3
SAMPLE SYMBOLS . SAMPLING UNSUCCESSFUL
. DISTURBED CR BAG SAMPLE
Bi—STANDARD PENETRATION TEST
B —CHUNK SAMPLE
B — ORIVE SAMPLE (UNDISTURBED)
?• — WATER TABLE OR SEEPAGE
I
File No. D-4230-H01
November 11, 1988
Ssa
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Q '
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0.
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TRENCH 4
ELEVATION 210 .DATE HRiit Pn 10/10/88
EQUIPMENT JD555 24" Track Backhoe
£S?
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zw
SP
u*
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5s
=8
MATERIAL OESCRIPTION
_ 2 ,
4
6
1 /
ML
SM
DELMAR FORl'IATION
Very firm, slightly moist, light gray-
green. Clayey SILTSTONE, fractured
Very dense, humid, light gray-green, Silty
fine SANDSTONE iwht few fine to coarse
patches. Iron stained, with clay along
some joints
I TRENCH TERMINATED AT 6.0 FEET
- 0 TRENCH 5 Elev. 265
- 4 -
- 6 -
- 8
CL
CL
, COLLUVIUM
1 Very firm, slightly moist, reddish brown,
' Sandy CLAY
"becomes very stiff and moist, with Santiago
Peak cobbles
CL WEATHERED SANTIAGO PEAK .
Very stiff, moist, olive, Sandy CLAY
ML
Very firm, moist, olive-green and orange,
Silty CLAY iwth little Santiago Peak
cobble
Very firm, moist, light greenish-gray.
Clayey SILT with little fine sand, cobbles
of Santiago Peak Volcanics
TRENCH TERMINATED AT 8.0 FEET
Figure A-31 Log of Test Trenches 4 and 5
SAMPLE SYMBOLS SAMPLING UNSUCCESSFUL
DISTURBED OH BAG SAMPLE
B —STANDARD PENETRATION TEST
B —CHUNK SAMPLE
1 — ORIVE SAMPLE lUNOISTURBEO)
Z. WATER TABLE OH SEEPAGE
NOTE THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY ATTHE SPECIFIC BOHING ORTRENCH LOCATION ANO ATTHE OATE INDICATED. ITISNOTWARRANTEDTO BE REPRESENTATIVEOF SUBSURFACE CONDITIONSATOTHERLOCATIONS ANO TIMES
File No. D-4230-H01
November 11, 1988
Sss
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in
£ I is
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TRENCH 6
ELEVATION. 130 .DATE DRILLED. 10/11/88
EQUIPMENT JD555 24" Track Backhoe
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MATERIAL DESCRIPTION
10
12
14
16
18
20
C6-1
.. GC-SC FILL
.Q:'^ Loose, damp, orange-tan. Clayey SAND and
BOULDERS
11
/ / *
/
/
/
CL Stiff, moist, olive-^green, Silty CLAY
with small chunks of unweathered Delmar
CL "stiff, moist, orange-brown, Sandy CLAY with
some GRAVEL, chunks of Delmar & Eocene
materials
ML
Stiff, moist, light olive-green. Clayey
SILT with little SAND, GRAVEL
CL Stiff, moist, grey & green, Sandy CLAY
ML \-
Stiff to very stiff, moist, light olive-
green with some grey, very Clayey SILT
with little SAND and GRAVEL
\ TRENCH TERMINATED AT 18 FEET
Figure A-32, Log of Test Trench 6
110.7 16.3
-I
SAMPLE SYMBOLS n — SAMPLING UNSUCCESSFUL
H DISTURBED OH BAG SAMPLE
B—STANOARO PENETRATION TEST
B —CHUNK SAMPLE
I — DRIVE SAMPLE (UNOISTUHBED)
?• — WATER TABLE OH SEEPAGE
I
File No. D-4230-H01
November 11, 1988
o z tn tn— <tn
tjO
TRENCH 7
ELEVATION.
EQUIPMENT
DATE DRILLED.
JD555 24" Track Backhoe
10/11/88
ft!S
zw
SP
u*
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- 2 -
4 -
»
- 6 -
- 8
10 -
fu
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16 H C
L
I
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h
[
CL FILL
Very firm to hard, slightly moist, tan, very
Sandy CLAY with pieces of wire, plastic bags,
concrete
ZI CL
GC-SC
Medium stiff, very moist, light green, Silty
CLAY with little GRAVEL, SAND
GC-CL
Dense, slightly moist, brown. Clayey SAND
and GRAVEL
V Very stiff, moist, light green with brown,
Silty CLAY and GRAVEL
Very stiff, moist, light green, Silty CLAY,
highly fractured with SAND
Becomes blue-green and with GRAVEL
18 -TRENCH TERMINATED AT 17 FEET
1
figure A-33, Log of Test Trench 7
1
j SAMPLE SYMBOLS • -SAMPLING UNSUCCESSFUL
OlSTURBEO OR BAG SAMPLE
B—STANDARD PENETRATION TEST
B — CHUNK SAMPLE
1 — DRIVE SAMPLE (UNOISTURBEOI
^ — WATER TABLE OH SEEPAGE
NOTE THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY ATTHE SPECIFIC BORING OR TRENCH LOCATION ANO
ATTHE OATE INDICATED ITIS NOTWARRANTEO TO BE REPRESENTATIVE OF SUBSURFACECONDITIONS ATOTHER LOCATIONSANO TIMES
File NO. D-4230-H01
November 11, 1988
isS
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2^
TRENCH 8
ELEVATION. 135 .DATE DRILLED. 10/11/88
EQUIPMENT JI)555 24" Track Backhoe
SEsi zw uo Oa:
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Ss
I
I
I
I
I
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MATERIAL DESCRIPTION
2 -
I- 4 -
6 .
8 -
10 -
- 12 -
- 14 -
yay- •
GC-CL
yy..."
V-:--
••/. •
T8
T8-2 m
m
- 16 -
- 18
- 20
SC
SM
CL
FILL
Hard, damp, orange-brown, Sandy CLAY and
GRAVEL
Medium dense, moist,.tan, very Clayey, fine
to medium SAND with some GRAVEL, lenses of
black organic material
U.O
BULK
15.
SAMP:
Becomes grey-blue
Medium dense, moist, yellow-tan, Silty,
fine to medium SAND:.with some SILT, lenses
of black organic material
Stiff, very moist, grey. Gravelly CLAY
with lenses of black organic material
Becomes grey-blue
TRENCH TERMINATED AT 16^$ FEET
Figure A-34, Log of Test Trench 8
SAMPLE SYMBOLS D — SAMPLING UNSUCCESSFUL
13 DISTURBED OR BAG SAMPLE
B STANOAHO PENETRATION TEST
B —CHUNK SAMPLE
B — DRIVE SAMPLE (UNDISTURBED)
5- — WATER TABLE OH SEEPAGE
NOTE THELOG OFSUBSURFACECONOmONS SHOWN HEREON APPLIESONLYATTHESPECIFICBORINGORTREN^
ATTHE DATE INOiCATEDJTIS NOTWARRANTEDTO SE REPRESENTATIVEOFSUBSUHFACECONOITIONS ATOTHER LOCATIONSANO TIMES
File NO. D-4230-H01
November 11, 1988
X „
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0.
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= 3
TRENCH 9
ELEVATION. 135 .DATE DRILLED. 10/11/88
EQUIPMENT JD555 24" Track Backhoe
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SE"
in
zw
SP
u* EW 3z
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28
- 0 MATERIAL DESCRIPTION
- 2 -
- 4 -
6 -
8 -
-10 -
-12 -
-14 -
-16 -
-18 -
-20- -
:-y.:-a-:
vl'."
y,.-
>ir.
I 1.
•yy-:
sc FILL
ML
Loose, humid, tan. Clayey SAND with GRAVEL
Very firm, moist, tan and. blue-green. Clayey
SILT with chimks of CLAY, SAND, organic
material
CL
SC
Stiff, very moist, blue-green and black,
Silty CLAY
Very firm, moist, blue-green. Clayey SAND
with pebbles and chunks of organic material
Becomes more Sandy
TRENCH TERMINATED AT I6J5 FEET
Figure A-35, Log of Test Trench 9
^ ^ n SAMPLING UNSUCCESSFUL B—STANDARD PENETRATION TEST
SAMPLE SYMBOLS _
13 — DISTURBED OR BAG SAMPLE hi — CHUNK SAMPLE
B — DRIVE SAMPLE (UNOISTURBEOI
5. — WATER TABLE OH SEEPAGE
NOTE THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY ATTHE SPECIFIC BORING OH TRENCH LOCATION AND ATTHEOATEINOICATED ITIS NOTWARRANTEO TO BE REPRESENTATIVEGFSUBSURFACECONOITIONSATOTHEH LOCATIONS AND TIMES
File No. D-4230-H01
November 11, 1988
«LZ"J 0.
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TRENCH 10
ELEVATION. JJ5. .DATE npiiiPn 10/10/88
EQUIPMENT JD555 24" Track Backhoe
Oo>^ FzW
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ZW
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u'
Si
MATERIAL DESCRIPTION
2 .
4 -
6 .
8 -
- 10
- 12-
- 14
- 16
|:j->:
•IVL"!.
SM
ALLUVIUM
Loose, moist, dark brown, Silty fine
SAND, roots, voids
•I--I.--I.
becomes wet
strong seepage
CL Soft, saturated, medium brown, Sandy
CLAY
TRENCH TERMINATED AT 16.0 FEET
Figure A-36, Log of Test Trench 10
SAMPLE SYMBOLS in — SAMPLING UNSUCCESSFUL
H DISTURBED OR BAG SAMPLE •
B—STANOARD PENETRATION TEST
B —CHUNK SAMPLE
B — DRIVE SAMPLE (UNOISTUHBED)
I. WATER TABLE OH SEEPAGE
NOTE THE LOG OF SUBSURFACECONDITIONS SHOWN HEREON APPLIES ONLY ATTHESPECIFICBOHINGORTHENCHLOCATIONA^^
A^T^HE 0ATE?ND7CATED. I^IS NOT^^^^^^
File No. D-4230-H01
November 11, 1988
TRENCH 11
ELEVATION 125 .DATE nPII LFD 10/10/88
EQUIPMENT JD555 24" Track Backhoe
E^> l-IOS
S«2
ug«
£: in zu
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s a
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SS
Si
MATERIAL DESCRIPTION
ALLUVIUM
Soft, moist, dark brown, Sandy CLAY
Stiff, moist to wet, medium light brown,
Sandy CLAY 106.2 14.7
Dense, moist to wet, light brown-tan. Clayey
fine SAND
TRENCH TERMINATED AT 16.0 FEET
Figure A-37, Log of Test Trench 11
SAMPLE SYMBOLS D SAMPLING UNSUCCESSFUL
El — DISTURBED OR BAG SAMPLE
B—STANOARO PENETRATION TEST
B —CHUNK SAMPLE
B — DRIVE SAMPLE (UNOISTUHBEDI
^ — WATER TABLE OH SEEPACE
NOTE THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY ATTHE SPECIFICBORING ORTRENCH LOCATION ANO
ATTHE OATE INDICATED. ITIS NOTWARHANTED TO BE REPRESENTATIVEOFSUBSURFACECONOITIONS ATOTHER LOCATIONS ANO TIMES
File No. D-4230-H01
November 11, 1988
5 -
TRENCH 12
ELEVATION 110 10/11/88
EQUIPMENT
_DATE DRILLED
JD555 24" Track Backhoe
u—5
u/
EM.'
25
<nS
Ss
MATERIAL OESCRIPTION
ALLUVIUM
Soft, moist, dark brown, Sandy CLAY
becomes wet
strong seepage
Loose, saturated, light brown, Silty fine
SAND
TRENCH TERMINATED AT 15.0 FEET
Figure A-38, Log of Test Trench 12
SAMPLE SYMBOLS G — SAMPLING UNSUCCESSFUL B—STANOARO PENETRATION TEST B-DRIVE SAMPLE (UNDISTURBED)
SAMPLE SYMBOLS G — SAMPLING UNSUCCESSFUL
WATER TABLE OH SEEPAGE | SAMPLE SYMBOLS
13 — OlSTURBEO OH BAG SAMPLE B —CHUNK SAMPLE WATER TABLE OH SEEPAGE |
NOTE THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY ATTHE SPECIFICBCRING C'^ENCH LOCATION ANO
ATTHE OATE INOICATEO. ITIS NOTWARRANTEO TO BE REPRESENTATIVEOF SUBSUHFACECONOITIONS ATOTHER LOCATIONSANO TIMES
File No. D-4230-H01
November 11, 1988
wss o z
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TRENCH 13
ELEVATION 100 .DATE DRILLED. in/n/Ra
EQUIPMENT JD555 Track Backhoe
Qoi-Pzu.
<<3t zw uo Oa.
m*
E>--
2z
SS OS zo
MATERIAL OESCRIPTION
. 4 .
8 -
10
CL
SW
ALLUVIUM
Soft, wet, dark brown, Sandy CLAY
very strong seepage; filled to 8' in less
than 2 minutes
Loose, saturated, light brown, fine to
coarse SAND, friable
TRENCH TERMINATED AT 10.0 (PJIFUSAL)
Figure A-39, Log of Test Trench 13
SAMPLE SYMBOLS Q — SAMPLING UNSUCCESSFUL
13 — DISTURBED OR BAG SAMPLE
B—STANDARD PENETRATION TEST
B —CHUNK SAMPLE
• — ORIVE SAMPLE (UNOISTUHBED)
?• — WATER TABLE OR SEEPAGE
NOTE THE LOG CF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY ATTHE SPEDFIC aORINGOH TRENCH LOCATION A^^
ATTHE OATE INOICATEO, ITIS NOTWARRANTEDTO BE REPRESENTATIVE OFSUBSURFACECONOmONS ATOTHER LOCATIONSANO TIMES
File No. D-4230-H01
November 11, 1988
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0.
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0 X 3S
TRENCH 14
ELEVATION. 170 .DATE npiiiPn 10/11/88
EQUIPMENT JD555 24" Track Backhoe
£S§ Zw uo Qw > s o
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25
u)S
OS
s8 MATERIAL DESCRIPTION
. 6 .
8 .
10-
12-
14.
16.
18
T14-1
:v;i:i-;.
.-K-l.-.l-.'-
'i-l-i:
V;i;;l-
;lyl-:'-
:ivi:-i:
,r.-l-:r
SM-SP
ALLUVIUM
Loose, damp, light brown-tan, slightly
Silty fine SAND
SM
Medium dense, moist; light brown, Silty
fine SAND, roots, voids, blocky
SM-SP
Medium dense to dense, moist>. tan,
slightly Silty fine SAND
TRENCH TERNIINATED AT 18.0 FEET
Figure A-40, Log of Test Trench 14
SAMPLE SYMBOLS O — SAMPLING UNSUCCESSFUL
S — DISTURBED OH BAG SAMPLE
B—STANOAHO PENETRATION TEST
B —CHUNK SAMPLg
• — DRIVE SAMPLE (UNDISTURBED)
— WATER TABLE OR SEEPAGE
NOT= THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY ATTHE SPECIFIC BOHINGOHTRENCH LOCATION AND ATTHE OATE INOICATEO. ITIS NOTWARRANTEO TO BE REPRESENTATIVEOFSUBSURFACECONOmONS ATOTHER LOCATIONS ANO TIMES
rniCTIQN RESISTRNCE
TSF(KO/CM* J
0
1
2
3
4
5
6
7
8
9
10
It
12
IS-
li-
is-
IB-
17-
18-
•"•••1J
-420-m
31 Ut 21-
22-
29
24
25
28-
27-
28-
28-
90
91-
92-
89
94-
95-
96
87-
98-
1 I
10
IS
20
25
90
95
40
4S
SO
ss
ru
60
m BS' m
70-
75
80
85
90
8S
100
IOS
uo
Its
120
125-
IQO
CONE RESISTRNCE SOIL
TSF(KC/CH*) COLUHN 150 200 2SQ 300 SSO 400
FRICTION RRTIQ
(X)
' ' • ' I • I I I I I 11 I I I . I I I , , , ,.
PROJECT I LA COSTA RANCH NW
PROJECT NUMBER I 89-230-1702
INSTRUMENT NUMBERi pi5CKE08B
DflTEi 10-05-igflfl tcrpmtiu " PROBE: CPTrl
a "* w
I 1 u.
OEPTH IM METERS
Ui la f 9 at
I I I ' '
DEPTH IN FEET
a in
• y,, •
in a
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PROJECTI LA COSTA RANCH NW
PROJECT NUMBER! 89-230-J702
INSTRUMENT NUMBERi FIBCKEOBB
DATE a 10-06-1988
jSS l^* ^'"'f^ Uehnology SS Corporation
CONE PENETROMETER TEST
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PROJECT I LA COSTA RANCH NW
PROJECT NUMBER I 89-230-1702
INSTRUMENT NUMBERi F15CKE088
DATE I 10-06-1988
e Jhe forth Udmhgy Corporation
CONE PENETROMETER TEST
PROBE: CPTrlO
a m
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PROJECT I LA COSTA RANCH NW
PROJECT NUMBER I 89-230-1702
INSTRUMENT NUMBER, F15CKE088
DRTEIlO-OR-]g{ B Corporation P R 0 B E : C PT r 12
CONE PENETROMETER TEST DATA
I SOUNDING : CPT-2 i PRQJECT : LA COSTA RANCH NW
1 PRQJECT No: 89-238-1702
I TEST OATE : 13-35-1988
LOCATION : CARLSBAD CA
INSTRUMENT : F15CKE088 ELECTRONICS: Tl OPERATOR : EC/MS/EC/MS
DEPTH
(ft)
CONE
(tsf)
FRICTION
(tsf)
RATIO PORE CONDUCTIVITY EXCIT
(psi) (uMHOS/Cit) (vdc)
NA NA 10.88
1.88 NA NA 10.88
4.86 NA NA 10.80
6.75 NA NA 10.00
5.28 NA NA 10.88
7.41 NA NA 18.88
7.B0 NA NA 18.80
8.45 NA NA 10.00
8.3ia NA NA 10.00
5.54 NA NA 10.00
5.77 NA NA 10.80
5.55 NA NA 10.80
6.39 NA NA 10.00
7.94 NA NA 10.08
5.99 NA NA 18.88
6.66 NA NA 10.00
6.39 NA NA 18.80
5.67 NA NA 18.88
5.71 NA NA 10.00
5.11 NA NA 10.00
5.75 NA NA 10.00
S.3B NA NA 10.00
6.86 NA NA 10.00
5.77 NA NA 10.00
5.15 NA NA 10.08
4.93 NA NA 10.00
4.93 NA NA 18.00
5.19 NA NA 10.00
6.16 NA NA 10.00
5.89 NA NA 10.00
4.39 NA NA 10.00
4.33 NA NA 10.00
2.86 NA NA 10.00
5. 17 NA NA -10.00
5.36 NA NA 10.00
4.64 NA NA 10.00
4.65 NA NA 10.00
5.49 NA NA 10.08
S.B5 NA NA 18.80
6.48 NA NA 10.00
5.98 NA NA 10.00
6.73 NA NA 18.00
7.25 NA NA 10.00
3.91 NA NA 18.00
3.91 NA NA 10.00
6.74 NA NA 18.80
1.66 NA NA 10.08
4.56 NA NA 10.00
1.53 NA NA 10.00
3.85 NA NA 10.00
7.86 NA NA 10.00
0.00 1.0Q 2.80 3.00
4.00
5.00
6.00
7.00
8.00 9.00 10.00 11.00
12.00
13.00
14.00
15.00
16.00 17.00 18.00 19.00
20.00
21.00
22.00
23.00
24.00
25.00 26.00 27.00 28.00
29.00
30.00
31.00
32.00
33.00 34.00 35.08 36.00
37.00
38.80
39.00
40.00
41.00 42.08 43.00 44.00
45.00
46.00
47.00
48.00
49.00
50.00
0.0 28.9
19.3
26.2
27.1
23.9
24.8 23.0
19.4
21.7
26.7 27.2
26.3
20.3
23.5
21.7
22.6
24.9
19.4
33.7
24.7
23.6
16.3
20.0 25.0
21.3
24.1
26.9
39.7
53.1 26.4 29.2
40.7
26.5
30.6
• 32.5
12.7 21.9 29.3 27.0
27.0
42.2
50.0
36.2
36.2 47.7 97.8 37.2
117.5
78.5
193.8
0.00
0.54
0.78
1.77
1.43 1.77 1.74 1.94
1.61
1.20
1.54
1.51
1.68 1.61 1.41 1.45
1.45
1.41
1.11
1.72
1.42 1.25 1.12 1.15
1.29
1.05
1.19
1.39
2.45
3.13 1.16 1.26 1.16
1.37
1.64
1.51
0.59
1.20 1.48 1.75 1.62
2.84
3.62
1.42
1.42
3.22 1.62 1.69 1.80
3.02
13.68
S The kiftti Technology Corporation
CONE PENETROMETER TEST DATA
SOUNDING :
PROJECT :
PROJECT No:
TEST DATE j
CPT-3
LA COSTA RANCH NU
89-230-1702
10-05-1988
LOCATION : CARLSBAO CA
INSTRUMENT : F15CKE088
ELECTRONICS: Tl
OPERATOR : EC/MS/EC/MS
DEPTH CONE "FRICTION RATIO PORE CONDUCTIVITY EXCIT
(ft) (tsf) (tsf) (X) (psi) (uHHOS/ca) (vdc)
0.00 0.0 0.00 a.00 NA NA . 10.00
1.00 31.7 0.41 1.28 NA NA 10.00
2.00 28.9 0.37 1.28 NA NA 10.00
3.00 35.8 0.81 2.26 NA NA 10.00
4.00 30.3 1.42 4.68
2.52
NA NA 10.00
5.00 28.0 0.71
4.68
2.52 NA NA 10.00
6.00 34.4 0.87 2.54 NA NA 10.00
7.80 27.5 2.26 8.22 NA NA 10.00
8.00 25.7 2.02 7.87 NA NA 10.00
9.00 21.1 1.41 6.69 NA NA 10.00
10.00 21.1 1.44 6.84 NA NA 10.00
11.00 19.7 1.31 6.62 NA NA 10.00
12.00 21.6 1.27 5.89 NA NA 10.00
13.00 26.6 2.10 7.87 NA NA 10.00
14.00 30.3 2.36 7.77 NA NA 10.00
15.00 23.4 1.57 6.72 NA NA 10.00
16.00 24.8 1.81 7.38 NA NA 10.00
17.00 25.3 2.25 8.91 NA NA 10.00
18.00 23.9 2.28 9.56 NA NA 10.00
19.00 23.0 1.50 6. S3 NA NA 10.00
20.00 22.0 1.40 6.33
5.15 NA NA 10.00
21.00 37.7 1.94
6.33
5.15 NA NA 10.00
22.00 34.0 1.49 4.48 NA NA 10.00
23.08 45.5 2. 10 4.63 NA NA 10.00
24.80 23.0 1.36 5.91 NA NA 10.00
25.00 22.0 1.59 7.22 NA NA 10.00
26.00 26.6 1.69 6.36 NA NA -10.00
27.00 26.6 1.52 5.71 NA NA 10.00
28.80 49. 1 2.81 5.72 NA NA 10.00
29.00 46.8 2.47 5.27 NA NA 10.00
30.00 51.9 3.04 5.87 NA NA 10.00
31.00 60.6 2.23-3.68 NA NA 10.00
32.00 64.7 3.41 5.27 NA NA 10.00
33. 00 88.2 2.33 2.64 NA NA 10.00
34.00 30. 8 1.82 5.90 NA NA 10.00
35.00 29.4 1.61 5.48 NA NA 10.00
36.00 2.80 5.25 NA NA 10.00
37.00 70.7 4.32 6.11 NA NA 10.00
38.00 70.7 4.53 6.40 NA NA 10.00
39.00 59.7 3.74 6.27 NA NA 10.00
40.00 45.5 3.06 6.74 NA NA 10.00
41.00 54.2 2.59 4.77 NA NA 10.00
42.00 65.2 3.26 5.01 NA NA 10.00
43.00 73.5 3.98 5.41 NA NA 10.00
44.00 52.8 2.96 5.60 NA NA 10.00
45.00 164.4 9.88 5.96 NA NA -10.00
S The Earth Technology Corporation
CONE PENETROMETER TEST DATA
SOUNDING : CPT-6
PROJECT ! LA COSTA RANCH NW
PRQJECT No: 89-230-1702
TEST DATE : 10-06-1988
LOCATION
INSTRUMENT
ELECTRONICS:
CARLSBAD CA
FISCKE088
Ti
OPERATOR » EC/MS/EC/MS
DEPTH CONE FRICTION RATIO PORE CONDUCTIVITY EXCIT
(ft) (tsf) (tsf) iX) (psi) (uMHOS/cai) (vdc)
0.00 0.0 0.00 0.00 NA NA 10.00
1.00 66.1 1.88 2.72 NA NA 10.00
2.00 66.1 4.62 6.99 NA NA 10.00
3.00 102.3 6.83 6.67 NA NA 10.00
4.00 90.8 6.22 6.85 NA NA 10.00
5.00 68.3 3.88 5.68 NA NA 10.00
6.00 61.8 4.66 7.54 NA NA 10.00
7.00 63.6 3.95 6.20
4.15
NA NA 10.00
8.00 82.9 3.44
6.20
4.15 NA NA 10.00
9.00 63.1 4.97 7.87 NA NA 10.80
10.00 69.5 5.14 7.39 NA NA 10.00
11.00 77.7 4.70 6.04 NA NA 10.00
12.00 62.1 4.87 7.84 NA NA 10.00
13.00 42.7 3.89 9.09 NA NA 10.00 14.00
15.00 36.3 3.14 8.65 NA NA 10.00 14.00
15.00 40.4 3.17 7.86 NA NA 10.08
16.00 28.9 2.16 7.47 NA NA 10.00
17.00 29.8 2.26 7.59 NA NA 10.00
18.00 31.1 2.40 7.71 NA NA 10.00
19.00 27.9 2.07 7.43 NA NA 10.00
20.00 38.9 2.81 7.22 NA NA -10.00
21.00 42.5 3.18 7.49 NA NA 10.00
22.00 44.8 1.99 4.46 NA NA 10.00
23.00 52.1 3.04 5.83 NA NA 10.00
24.00 31.4 2.23 7.12 NA NA 10.80
25.00 40.1 2.34 5*8^ NA NA 10.08
26.00 37.3 2.17 5.82 NA NA 10.00
27.00 48.7 3.15 6.47 NA NA 10.00
28.00 21.2 1.42 6.73 NA NA 10.00
as The Eartft Technology Cor por at ion
CONE PENETROMETER TEST DATA
SOUNDING :
PROJECT
PRQJECT No:
TEST DATE :
CPT-M .
LA COSTA RANCH NW
89-230-1702
10-06-1988
LOCATION
INSTRUMENT
ELECTRONICS
OPERATOR
CARLSBAD CA
F15CKEB88
Tl
EC/MS/EC/MS
DEPTH
(ft) CONE FRICTION RATIO PORE CONDUCTIVITY EXCIT
(tsf) (tsf) (7.) (psi) (uMHOS/c») (vdc)
0.00
1.00
2.00
3.00
4.00
5.00
6.00
7.00
8.00
9.00
10.00
11.00
12.00
13.00
14.00
15.00
16.00
17.00
18.00
19.00
28.80
21.08
22.00
23.80
24.00
25.00
26.00
27.00
28.00
29.00
30. 00
31.00
32.88
33. 80
34.00
35.00
36.08
37.00
38. 00
39.00
40.00
41.00
42.00
43.00
44.00
45.00
46.00
47.00
48.00
0.0
48.7
41.3
30.7
44.9
48.6
49.9
60.0
70.6
87. 1
S9.3
80.6
78.7
88.8
97.5
96.1
93.4
103.0
85. 1
74.0
68.2
68.5
68.0
78. 1
66. 1
118.4
119.8
94. I
86.7
234. 1
111.5
105.3
98.1
87. I
80.2
66.8
89.3
52. 1
91.1
99.4
75.9
79. 1
70.4
62.5
50.6
60.7
124.5
97.4
141.4
0.00
0.71
0.54
0.37
0.61
0.61
0.81
0.91
0. 98
1.56
1.35
1.25
1.59
1.62
2.16
2.50
1.72
2.06
2.36
1.62
1.14
1.17
1. 14
1.14
3.21
3.21
2.70
2.46
1.98
4.29
4.56
3.30
3.34
2.32
2.42
2.83
2.08
3.37
2.08
1.98
2.14
1.87
1.60
1.29
2.51
2.04
2.38
3.46
1.83
0.00
1.46
1.31
1.21
1.35
1.25
1.62
1.52
1.39
1.79
1.51
1.55
2.02
1.82
2.22
2.60
1.84
2.00
2.78
2. 18
1.89
1.71
1.67
1.46
4.85
2.71
2.25
2.61
2.29
1.83
4.09
3.15
3.40
2.66
3.02
4.23
2.33
6.47
2.28
1.99
2.82
2.37
2.27
2.07
4.97
3.36
1.91
3.56
1.30
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
MA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
10.00
10.00
18.00
10.00
10.00
18.00
10.00
-10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
18.00
10.00
10.00
10.00
18.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.08
10.00
10.00
10.00
10.08
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
S The Earth Technology Corporation
CONE PENETROMETER TEST DATA
! SOUNDING : CPT-12 '
I PROJECT : LA CUSTA RANCH NW
i PRQJECT Mo: B9-230-1702
I TEST QATE : 10-06-1988
LOCATION : INSTRUMENT :
ELECTRONICS:
OPERATOR :
CARLSBAD CA
FlSCKEOaS Tl
EC/MS/EC/MS
DEPTH CONE FRICTION RATIO PORE CONDUCTIVITY EXCIT
(ft) (tsf) (tsf) (X) (psi) (uHHOS/cm) (vdc)
0.00 8.0 0.80 0.00 NA NA 10.00
1.00 40.4 1.12 2.77 NA NA 10.00
2.00 48.9 0.85 2.08 NA NA 10.88
3.00 45.8 2.58 5.73 NA NA 10.00
4.00 28.5 2.48 8.78 NA NA 10.00
5.00 17.8 1.06 6.28 NA NA 10.00
6.00 17.5 1.06 6.03 NA NA 10.08
7.00 11.5 0.75 6.S1 NA NA 10.00
8.00 8.3 0.41 4.95
4.25
NA NA 10.00
9.00 9.7 0.41
4.95
4.25 NA NA 10.00
10.00 14.3 0.82 5.73
6.54
NA NA 18.00
11.00 19.8 1.30
5.73
6.54 NA NA 10.00 12.00
13.00 13.9 1.16
8.75 8.37 NA NA 10.00 12.00
13.00 U.l
1.16
8.75 6.78 NA NA 10.00
14.00 18.7 0,75 7.07 NA NA 18.00
15.00 17.6 0.99 5.65 NA NA 10.00
16.00 17.1 0.96 5.61 NA NA 18.88
17.00 22.2 1.37 6.17 NA NA 10.00
18.00 23.1 1.50 6.51 NA NA 10.00
19.00 13.0 0.89 6.87 NA NA 10. 00
20.00 14.8 0.93 6.25 NA NA 10.08
21.00 16.7 0.76 4.55 NA NA 10.00
22.00 17.6 1.40 7.97 NA NA 10.00
23.00 12.1 0.67 5.53 NA NA 10.00
24.00 IS.8 0.83 5.24 NA NA 10.00
25.00 18.1 0.83 4.58 NA NA 10.00
26.00 27.7 1.75 6.29 NA NA 10.00
27.00 26.8 1.75 6.51 NA NA 10.00
28.00 38.3
34.2
1.88 4.91 NA NA 10.00
29.00
38.3
34.2 1.75 5.11 NA NA 10.00
30.00 24.1 0.97 4.01 NA NA 10.00
31.00 31.5 1.38 4.37 NA NA 10.00
32.00 48.9 2.29 4.69 NA NA 18.88
33.00 26.0 1.31 5.04 NA NA 10.00
34.00 111.4 3.38 3.03 NA NA 10.00
35.00 52.6 2.67 5.87 NA NA 10.08
36.00 49.4 2.16 4.37 NA NA -18.08
37.00 75. 1 1.18 1.56 NA NA 18.80
38.00 94.0 1.35 1.43 NA NA 10.08
39.00 47.6 2.16 • 4.54 NA NA 18.80
40.00 35.7 1.99 5.58 NA NA 10.00
41.00 105.9 0.80 8.76 NA NA 10.00
42.00 190.4 3.93 2.86 NA NA -18.00
43.00 63.7 2.60 4.89 NA NA 10.00
44.00 151.9 0.81 8.53 NA NA 18.00
45.00 111.5 2.61 2.34 NA NA 18.00
46.00 22.4 0.48 1.78 NA NA -10.00
47.00 22.9 0.81 3.53 NA NA 10.00
48.00 53.2 0.94 1.78 NA NA 18.80
49.00 58.2 2.74 4.71 NA NA 10.00 50.00
51.00 44.8 2.74 6.24 NA NA 18.00 50.00
51.00 59.6 1.52 2.55 NA NA 10.00
52.00 34.4 1.22 3.54 NA NA 10.00
53.00 29.8 0.98 3.29 NA NA 10.00
54.00 15.1 0.54 3.57 NA NA 10.00
55.00 17.0 ' 0.40 2.39 NA NA 10.00 56.00
57.00 14.7 0.54 3.69 NA NA 10.00 56.00
57.00 14.2 0.78 5.48 NA NA 10.00
58.00 170.3 4.02 2.36 NA NA 10.80
59.00 86.8 1.43 1.64 NA NA 10.00
S The Earth Technology Corporation
File No. D.4230-HOl
November 11, 1988
TABLE I
Sunmarv of Direct: Shear Test Results
Sample
No.
Dry-
Density
2cf
Moisture
Content
i .
Unit
Cohesion
psf
Angle of
Shear
Resistance
Degrees
B7-2
B8-7
B9-5
Bll-2
B14-5
*B15-8
B16-3
*B17-1
108.4
112.7
1115.0
95.9
119.5
92.0
107.5
111.2
16.5
15.5
15.1
26.5
13.6
29.1
18.9
17.1
1160
1420
290
250
730
190
990
700
27
30
35
29
28
10
27
16
* Residual Shear
... iivj . 1.1—.r,c JU—nu J.
November 11, 1988
LABORATORY REPORT
Telephone (619) 425-1993 Established 1928
CLARKSON LABORATORY AND SUPPLY INC.
350 Trc3usdale Dr. Chula Vista, Ca. 92010
ANALmCAL AND (XNSOLTING CHEMISTS
Date: 10/18/88
Purchase Order Ntmber: 4230-^1
Account NUnber: GECK
Tb:
*—• , .*
GEOCCN INC.
9530 DOWDY DRIVE
SAN DIEGO, CA. 92126
Laboratory NUnber: S02054 Customers Phone Nbt 695-2880
Sanple Designation:
* —__—.—___*
Oie soil sanple inarked job nane La Costa NW file
#4230-501 sanple #B15-9.
ANALYSIS: By Tfest Method No. Calif. 643-C October 2, 1972 State of
Califomia Departmait of Public Works Division of Highways
Materials and Research D^)artment Method for Etetinatijig the
Service Life of Metal Culverts.
SAMELE
pB 3.3
Water Added (ml)
0
50
50
50
50
50 .
50
50
50
Resistivity (ohm-cm)
4110
1450
490
270
380
. 280
250
250
250
Less than 5 years to perforation for a 16 to 8 gauge metal culvert.
File No. D-4230-H01
November 11, 1988
SAMPLE NO. B4-4
< 9
-J o
CO z o o
Z
UJ o a: lU
Q.
w ITER ADC
/
ai 0.5 1.0 5.0 iao
APPLIED PRESSURE (ksf)
sao loao
INITIAL DRY DENSITY I0S.3 (p<:f)
INITIAL WATER CONTENT 21.2 (%)
INITIAL SATURATION 92.6 ( % )
SAMPLE SATURATED AT 0.3 (ksf)
CONSOLIDATION CURVE
LA COSTA RANCH - NORTHWEST AREA
CARLSBAD, CALIFORNIA
Figure B-2
SAMPLE NO. B6-3
z o
H <
9
o
CO z o o
UJ o cc
UJ
a.
ai 0.5 1.0 s.0 iao
APPLIED PRESSURE (ksf)
sao 100.0
INITIAL DRY DENSITY 110.4 (pcf)
INITIAL WATER CONTENT IS.O (%)
INITIAL SATURATION 87.3 (%)
SAMPLE SATURATED AT 0.5 (Icsf ) •
CONSOLIDATION CURVE
LA COSTA RANCH - NORTHWEST AREA
CARLSBAD, CALIFORNIA
I
-•.gure B-3
File No. D-4230-H01
November 11. 1988
Z
o
<
Q
IJ O
CO z o o
I-z
UJ o oc
UJ
Q.
SAMPLE NO. 82-3
10
ai
WATER ADDED
0.5 1.0 S.0 iao
APPLIED PRESSURE (ksf)
50.0 loao
INITIAL DRY DENSITY 99.0 < pcf )
INITIAL WATER CONTENT 24.0 ( % )
INITIAL SATURATION 8S.0 ( % )
SAMPLE SATURATED AT 0.5 (ksf)*
CONSOLIDATION CURVE
LA COSTA 6ANCH - NORTHWEST AREA
CARLSBAD, CALIFORNIA
Figure B-l
ProjectNo. 04230-12-03
September 25, 1996
Morrow Development
c/o Villages of La Costa
Post Office Box 9000-685
Carlsbad, Califomia 92078-9000
Attention: Mr. Fred Arbuckle
Subject:
Gentlemen:
LA COSTA NORTHWEST .
CARLSBAD, CALIFORNIA
PRELIMINARY RIPPABILITY STUDY
In accordance with you request, we have performed the initial phase of a preliminary rippability
study for the subject property. The purpose of this study was to provide an initial evaluation of the
potential difficulty in excavations during grading within the portion of the project imderlain by rock.
The Santiago Peak Volcanics (Jsp) are exposed along the upper slopes in the southeast comer of the
site. Ten seismic refraction traverses were conducted on September 23 and 25, 1996. The
approximate locations of the seismic lines are shown on the attached Site Plan, Figure 1.
The results of the siurvey indicated a variable but relatively shallow depth of rippable raaterials. The
interpreted depths are present in the summary in Table I and on Figure 1.
This rock formation is characterized as highly variable in depth of decomposition. While seismic
studies are a suitable method of evaluation, the actual extent of rippability may exceed the
interpreted depth where fracturing within the rock is present It is our experience that where the
fracturing is extensive, grading may be possible although more difficult Grading in this condition
requires an extensive soaking to soften the fracture zones.
It is recommended that a second phase of the rippability study be implemented. This could consist of
either trenching or borings utilizing an air track drill. The latter is less intrusive and would not result
in the extent of disturbance associated with the trenching.
If you have any questions regarding this letter, or if we may be of further service, please contact the
undersigned at your convenience.
Very truly yours,
£oN INC
, F. L^ake,
RCE 22527^
AS:DFL:slc
(6/del) Addressee
TABLEI
SEISMIC TRAVERSES
Seismic
- Traverser
No.-
AvengerVelacitjr
(ft/sec;)
Average Deptlt
(ft)
Length of
Traverser
- . (ft)
Approamats Mazimnin-
Oeptir Explored
(ft)-
Seismic
- Traverser
No.-
Length of
Traverser
- . (ft)
Approamats Mazimnin-
Oeptir Explored
(ft)-
S-l 4198 10619 — 14-17 — 100 30
S-2 3178 9976 — 5-6 — 100 30
S-3 3403 8868 — 2-10 — IOO 30
S-4 5192 32685 — 22 — 100 30
S-5 1791 8019 — 4^ — IOO 30
S-6 1459 3639 10989 2-3 12-24 100 30
S-7 3430 18373 — 16-21 . — 100 30
S-8 2981 32156 — 19-21 — 100 30
S-9 1411 4581 9055 3-7 12-24 100 30
S-IO 2378 12892 — 4-8 — 100 30
NOTE:
Vl - Veiodty in feet per second of fiist layer of materials
V2 Second liQ'erveiocnties
V3 = Third layer velocities
O] a Deptii in feet to base of first layer
D2 °* Depth to base of second layer
For mass grading, materiais with velocities of less dian 4500 fps are geneially rippable with a D9 CaterpiUar Tractor
equipped with a singie siiank hydraulic ripper. Velocities of 4500 to 5500 fps indicate marginal ripping and blasting.
Velocities greater than 5500 fps generally require pre-blasting. For trenching, materiais with velocities less than 3800
fps are generally rippable depending upon the degree of fracturing and the presence or absence of bouldeis. Velocities
between 3800 and 4300 fps generally indicate marginal ripping, and velocities greater than 4300 fps generally indicate
non-rippable conditions. The above velocities are based on a Kohiing 505.
The reported velocities represent average velocities over the length of each traverse, and should not generally be used
for subsur&ce inteipretation greater than 100 feet from a traverse.
ProjectNo. 04230-12-03 September 25, 1996
APPENDIX
APPENDiX D
SELECTED BORING LOGS
FROM
GEOTECHNICAL INVESTIGATION FOR RANCHO CARRILLO
PROJECT— MAJOR ROADS, CARLSBAD, CAUFORNIA,
PREPARED BY GEOCON INCORPORATED, DATED JANUARY 15,
1993 (PROJECT NO. 04787-12-01).
FOR
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
PROJECT NO. 06403-12-01
. tlOJECT NO. 04787-12-01
>ePTH
IM
.FEET
SOIL
CUSS
(USCS)
BORiNG SBI\4 10
ELEV. (MSL) 111
EQUIPMENT
PATE COMPLETED 4/27/92
MAYHEW 1000 ROTARY
I-<t e I-I 9
s5
^ •
a
2u
MATERIAL DESCRIPTION
2 -I
6 H
SBMIO
-1
8 -
10 -
12
14
f 18
SBMIO g
SBMIO
-3
I
SBM10|T
22 -
24 -
26
f 28
SBMIO
-5
CL-SC
SC
i
i SP-SC
TOPSOIL
Hnn, damp, dark brown, Sandy CLAY
ALLUVIUM
Firm, wet, dark brown, Sandy CLAY
-Water table after stabilizing at 4 feet
Becomes loose, satiuated, light brown, fine
Qayey SAND and Sandy CLAY
UU.4 TTT
-Becomes very light brown with lenses of
slightly clayey sand at 15 feet 10
Becomes light brown, fine to coarse, Qayey
SAND with little, fine gravel
TT TUT
Becomes medium dense, saturated, light brown,
meciium to coarse, slightly clayey SAND to
Clayey SAND
TT
Figure A-15 Log of Boring SBM 10, page 1 of 2 CROR
SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL STANOARO PENETRATION TEST
... DISTURBED OR &AG SAMPLE 0 ... CHUNK SAMPLE
• ... DRIVE SAMPLE (UNDISTURBED)
Z ... VMTER TABLE OR SEEPAGE
TE: THE LOG OF SUBSURFACE CONOITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESEHTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS AHO TIMES.
PROJECT NO. 04787-12-01
OEPTH
IN
FEET
SAMPLE
MO.
O
o
o
p
-I
SOIL
CLASS
(USCS)
BORiNG SBl^lO
ELEV. (MSL) 111
EQUIPMENT
.DATE COMPLETED 4/27/92
MAYHEW 1000 ROTARY
gci
IU •*
si
u
- 30 SBMIO
-6
MATERIAL DESCRIPTION
I
c
32 -
34 -
36 -
38
40
- 42
SBMIO I -7
SBMIO
-8
44 -SBMIO
-9
46 -
CL Very stiff, saturated, green, Sandy CLAY
-Becomes gravelly at 32 feet
"nr TTTT T5T
Very dense, saturated, yellowish brown.
Clayey SAND and gravel
"TT
GC
GC
Becomes very dense, green, Sandy CLAY
with gravel and cobbles "50/3"
'50/3"
BORING TERMINATED AT 46.5 FEET
REFUSAL
'=igure A-16 Log of Boring SBM 10, page 2 of 2 CROR
S^^SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL 0
^ ... OlSTURBEO OR SAG SAMPLE 0
STANOARO PENETRATION TEST •
CHUNK SAMPLE Z
.. ORIVE SAMPLE (UNDISTURBED)
.. UATER TABLE OR SEEPAGE
lOTE: THE LOG OF SUBSURFACE CONOITIONS SHOUN HEREON APPLIES ONLT AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
OATE INOICATEO. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOITIONS AT OTHER LOCATIONS ANO TIMES.
PROJECT NO. Q4787-12-01
DEPTH
IM
FEET
SAMPLE
NO.
> a o -I o z
h-
IH -1
SOIL
CUSS
(USCS)
BORING SB1\4 11
ELEV. (MSL) 110
EQUIPMENT
_DATE COMPLETED 4/28/92
MAYHEW 1000 ROTARY
Ul '
S3 go
Ul J5
ai
MATERUL DESCRIPTION
I- 4 H
SBMll
-1
CL
CL
10 -SBMll
2
12 -
14 -
18 H
SC-CL
SBMiir:
20
22 -
24 -
26 -
28 -
SBMll!
-4
SBMll
5
SP-SC
CL
-pjj^j-
Firm, damp, yeilowish brown, Sandy CLAY
with desiccation cracks
ALLUVIUM
Stiff, moist, yellowish brown mottled,
Sandy CLAI
Becomes altemating stiff, yellowish brown
Sandy CLAY and medium dense, brown.
Clayey SAND
Becomes loose to medium dense, saturated,
yellowish brown mottled, fine to medium,
Qayey SAND altemating with slightly
clayey SAND, with little gravel
Very stiff, wet, light green, Sandy CLAY
15 111.1 19.0
2a
IT 1U5T -ITT
32
T5" 1O4.U "Z3:D"
Figure A-17 Log of Boring SBM 11, page 1 of 2 CROR
SAMPLE SYMBOLS ^ "' UNSUCCESSFUL B... STANDARD PENETRATION TEST 1... DRIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE 0 ... CHUNK SAMPLE I ... UATER TABLE OR SEEPAGE
TE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATIOH ANO AT THE
OATE INDICATED. IT IS NOT UARRANTED TO SE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 04787-12-01
DEPTH
IN
FEET
SAMPLE
NO.
SOIL
CUSS
(USCS)
BORiNG SBMll
ELEV. (MSL) 110
EQUIPMENT
.DATE COMPLETED 4/28/92
MAYHEW 1000 ROTARY hi
Ul**
(0
SBMll I
MATERL\L DESCRIPTION
SBMll tf
CL-SC Becomes altemating of green mottled, fine to
medium Qayey SAND and very dark brown,
Sandy CLAY
SP-SC
SBMll |:
SBMll]
-10
Becomes medium dense, saturated, gray, fine
to medium slightly clayey SAND with carbon
flecks and fine voids; more clayey in places
CL WEATHERED DELMAR FORMATION
Dense, wet, light green mottled. Clayey
SAND and grayish brown, Sandy CLAY
CL
-Becomes very stiff, wet, light green with
dark red staining, slightly sandy CLAY,
fractured with trace of fine gravel
CL
DELMAR FORMATION
Hard, moist, light green, slightly sandy
CLAY with trace of fine gravel
TT
37
30 107.3 21.7
46
BORING TERMINATED AT 51.5 FEET
•igure A-18 Log of Boring SBM 11, page 2 of 2 CROR
^i' SAMPLE SYMBOLS G ... SAMPLING UNSUCCESSFUL
^ ... DISTURBED OR SAG SAMPLE
C... STANOARO PENETRATION TEST 1... ORIVE SAMPLE (UNDISTURBED}
0 ... CHUNK SAMPLE Z ... UATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LCXrATIONS ANO TIMES.
PROJECTNO. 04787-12-01
DEPTH
IN
FEET
SAMPLE
NO.
> O o -I o SOIL
CUSS
(USCS)
BORiNG BM34
ELEV. (MSL) 210
EQUIPMENT
_DATE COMPLETED 1/15/92
E-100 BUCKET RIG
z ,„
rr IH B m <"
>
go
>i
ut 2 Q: "
g^ = o o
0
2
4 -
6 -
8 -
10 -
12 -
14 -
MATERIAL DESCRIPTION
BM34
-1
BM34
SM
' I
ML
SM
BM34 f
SM
DELMAR FORMATION
Dense, damp, light to orange-brown, Silty, fine SANDSTONE
-1.5 X I foot highly cemented concretion
in south side boring at 5 feet
-Sharp irregular, near horizontal contact
Dense, damp, iTglir green" Qayey
SILTSTONE: thinly bedded
-Gradational contact
"Dense" damp.irghf ro"medIum bfown7 SiTty,
fine to medium SANDSTONE: several 1 to 2
inch interbedded green claystone lenses
with orange oxide
-1 X 1.5 foot highly cemented concretion
at 9 feet
-10 inch X 2 foot highly cemented
concretion 10.5 feet
-Continuous well cemented from 12 to
13.3 feet with shells
-Becomes fine to coarse at 14 feet
-Irregular near horizontal contact
Sliff to very stiff, "damp,"lTg"ht green,
Sandy CLAYSTONE: gypsum fracture fillings,
orange oxide staining
-Gradational contact
Dense" damp,"irght" gray to" light green,
Silty. fine to coarse SANDSTONE: massive
• -Sharp, slightly irregular, near horizontal contact
"Very stIf?,"dam"p"to ~nroist,~irght green,'
Silty CLAYSTONE: moist along contact
at 24 feet, thinly bedded with orange
oxide along bedding
-Irregular, near horizontal contact
~l5e"nse" climp,~irghf gray,"Sllty", Tme "to "
medium SANDSTONE
110.9 6.7
122.1
123.9
12.8
7.6
Figure A-86 Log of Boring BM 34, page 1 of 2 CROR
^SAMPLE SYMBOLS UNSUCCESSFUL E... STANDARD PENETRATION TEST I
S ... DISTURBED OR BAG SAMPLE 0 ... CHUNK SAMPLE Z ,
.. DRIVE SAMPLE (UNDISTURBED)
.. UATER TABLE OR SEEPAGE
3TE: THE LOG OF SUBSURFACE CONOITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING ORTRENCH LOCATION AND AT'THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 04787-12-01
i
I
DEPTH
IN
FEET
SAMPLE
NO.
SOIL
CUSS
(USCS)
BORiNG BM34
ELEV. (MSL) 210
EQUIPMENT
_DATE COMPLETED 1/15/92
E-100 BUCKET RIG IU IU fV IU
t *' a
si
30
32 -
34 -
36 -
38 -
40 -
42 -
44
46
BM3T
-8
BM34
-9
BM34
-10
BM34 i
-11 I
BM34 I
-I? I:
CL
SM
MATERIAL DESCRIPTION
-Sharp irregular contact N2h, ONW TD3T TO"
-1/8 to 1/4 inch moist to damp clay at contact
Very stiff to hard, damp to moist, dark
green CLAYSTONE: micaceous from 282 to
32 feet, thinly bedded below 32 feet
-Gradational contact
"iSehie" £lamp,"irglir green"tb'lfglif Srowii,
Silty, fine to medium SANDSTONE:
massive with abundant cross bedding,
orange oxide staining
-Becomes fine to coarse at 36 feet
-Cross beds NlOW, 15SW at 37 feet
-8 inch thick continuous highly weathered
concretionary bed at 42 feet; irregular
shape, some dark brown clay developed
from weathering within the concretion,
clay not continuous
115.3 15.3
BORING TERMINATED AT 46 FEET
Figure A-87 Log of Boring BM 34, page 2 of 2 CROSi
J SAMPLE SYMBOLS SAMPLING UNSUCCESSFUL E... STANDARD PENETRATION TEST 1... DRIVE SAMPLE (UNDISTURBED)
DISTURBED OR BAG SAMPLE 0 ... CHUNK SAMPLE Z ... WATER TABLE OR SEEPAGE
I
NOTE: THE LOG OF SUBSURFACE CONOITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES.
APPENDIX^
APPENDiX E
SLOPE STABILITY ANALYSES
for
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALiFORNIA
PROJECT NO. 06403-12-01
ProjectNo. 06403-12-01
320
. 300
^ 280 C q 260
240
.5? 220
LU
200
Village of La Costa - Greens
Cut Slope 1
1.871
0 50 100 150 200 250 300 350 400 450 500 550 600
Distance (ft)
Description UnitWelght
(pcf)
Friction Angle
(degrees)
Cohesion
(psf)
Qcf 130 25 300
Ts 130 30 300
B.P.S. 130 10 100
File Name: La Costa GreensWLCI.sip Figure E-2
ProjectNo. 06403-12-01
Village of La Costa - Greens
Cut Slope 2
2.278
30^
280
c 260
o '•+-> 240 ca 240
> 220
UJ 2001
PL
I Qcf
50 100 150 200 250 300 350
Distance (ft)
400 450 500 550 600
Description Unit Weight
(pcf)
Friction Angle
(degrees)
Cohesion
(psf)
Qcf 130 25 300
Ts 130 30 300
B.P.S. 130 10 100
File Name: La Costa Greens\VLC2.slp Figure E-3
ProjectNo. 06403-12-01
PL
220
200 ion (1 180
160 levat 140
120
Hi 100
0
Village of La Costa - Greens
Cut Slope 3
2.167
250 300 350
Distance (ft)
600
Description UnitWelght
(pcf)
Friction Angl
(degrees)
i Cohesion
(psf)
Qcf 130 25 300
Ts 130 30 300
B.P.S. 130 10 100
File Name: La Costa GreensWLCS.sIp Figure E-4
ProjectNo. 06403-12-01
Village of La Costa - Greens
Cut Slope 4
1.797
60
50 100 150 200 250 300 350 400
Distance (ft)
450 500 550 600 650
Description UnitWelght
(pcf)
Friction Angl
(degrees)
i Cohesion (psf)
Ts 130 30 300
Fault 130 10 100
File Name: La Costa Greens\VLC4.slp Figure E-5
Project No. 06403-12-01
Village of La Costa - Greens
Cut Slope 5
1.731
a> 120
LLI 100
0 50 100 150 200 250 300 350 400 450 500 550 600
Distance (ft)
Description UnitWelght
(pcf)
Friction Angl
(degrees)
i Cohesion
(psf)
Qcf 130 25 300
Ts 130 30 300
B.P.S. 130 10 100
File Name: La Costa GreensWLCS.sIp Figure E-6
APPENDIX
APPENDiX F
RECOIVIMENDED GRADING SPECIFICATIONS
for
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALiFORNIA
PROJECT NO. 06403-12-01
RECOMMENDED GRADING SPECIFICATIONS
1. GENERAL
1.1. These Recommended Grading Specifications shall be used in conjunction with the
Geotechnical Report for the project prepared by Geocon Incorporated. The recom-
mendations contained in die text of the Geotechnical Report are a part of the earthwork and
grading specifications and shall supersede the provisions contained hereinafter in the case
of conflict.
1.2. Prior to the commencement of grading, a geotechnical consultant (Consultant) shall be
employed for the purpose of observing earthwork procedures and testing the fills for
substantial conformance with the recommendations of the Geotechnical Report and these
specifications. It will be necessary that the Consultant provide adequate testing and
observation services so that he may detennine that, in his opinion, the work was performed
in substantial conformance with these specifications. It shall be the responsibility of the
Contractor to assist the Consultant and keep him apprised of work schedules and changes
so that personnel may be scheduled accordingly.
1.3. It shall be the sole responsibility of the Contractor to provide adequate equipment and
methods to accomplish the work in accordance with applicable grading codes or agency
ordinances, these specifications and the approved gradmg plans. If, in the opinion of the
Consultant, unsatisfactory conditions such as questionable soil materials, poor moisture
condition. Inadequate compaction, adverse weather, and so forth, result in a quality of work
not in confonnance with these specifications, the Consultant will be empowered to reject
the work and recommend to the Owner that construction be stopped until the unacceptable
conditions are conected.
2. DEFINITIONS
2.1. Owner shall refer to the owner of the property or the entity on whose behalf the grading
work is being performed and who has contracted with the Contractor to have grading
performed.
2.2. Contractor shall refer to the Contractor performing the site grading work.
2.3. Civil Engineer or Engineer of Work shall refer to the Califomia licensed Civil Engineer
or consulting firm responsible for preparation of the grading plans, surveying and verifying
as-graded topography.
GI rev. 8/98
2.4. Consultant shall refer to the soil engineering and engineering geology consulting firm
retained to provide geotechnical services for the project.
2.5. Soil Engineer shall refer to a California licensed Civil Engineer retained by the Owner,
who is experienced in the practice of geotechnical engineering. The Soil Engineer shall be
responsible for having qualified representatives on-site to observe and test the Contractor's
work for conformance Avith these specifications.
2.6. Engineering Geologist shall refer to a Califomia licensed Engineering Geologist retained
by the Owner to provide geologic observations and recommendations during the site
grading.
2.7. Geotechnical Report shall refer to a soil report (including all addenda) which may include
a geologic reconnaissance or geologic investigation that was prepared specifically for the
development of the project for which these Recommended Grading Specifications are
intended to apply.
3. MATERIALS
3.1. Materials for compacted fill shall consist of any soil excavated firom the cut areas or
imported to the site that, in the opinion of the Consultant, is suitable for use in construction
of fills. In general, fill materials can be classified as soil fills, soil-rock fills or rock fills, as
defined below.
3.1.1. Soil fills are defined as fills containing no rocks or hard lumps greater than 12
inches in maximum dimension and containing at least 40 percent by weight of
material smaller than 3/4 inch in size.
3.1.2. Soil-rock fills are defined as fills containing no rocks or hard lumps larger than 4
feet in maximum dimension and containing a sufficient matrix of soil fill to allow
for proper compaction of soil fill around the rock fragments or hard lumps as
specified in Paragraph 6.2. Oversize rock is defined as material greater than 12
inches.
3.1.3. Rock fills are defined as fills containing no rocks or hard lumps larger than 3 feet
in maximum dimension and containing little or no fines. Fines are defined as
material smaller than 3/4 inch in maximum dimension. The quantity of fmes shall
be less than approximately 20 percent of the rock fill quantity.
GI rev. 8/98
3.2. Material of a perishable, spongy, or otherwise unsuitable nature as determined by the
Consultant shall not be used in fills.
3.3. Materials used for fill, either imported or on-site, shall not contain hazardous materials as
defined by the California Code of Regulations, T^e 22, Division 4, Chapter 30, Articles 9
and 10; 40CFR; and any other applicable local, state or federal laws. The Consultant shall
not be responsible for the identification or analysis of the potential presence of hazardous
materials. However, if observations, odors or soil discoloration cause Consultant to
suspect the presence of hazardous materials, die Consultant may request from the Owner
the termination of grading operations within thc affected area. Prior to resuming grading
operations, the Owner shall provide a written report to the Consultant indicating that the
suspected materials are not hazardous as defined!^ applicable laws and regulations.
3.4. The outer 15 feet of soil-rock fill slopes, measured horizontally, should be composed of
properly compacted soil fill materials approved by the Consultant. Rock fill may extend to
the slope face, provided that the slope is not steq)er than 2:1 (horizontahvertical) and a soil
layer no thicker than 12 inches is track-walked onto the face for landscaping purposes.
This procedure may be utilized, provided it is acceptable to the goveming agency. Owner
and Consultant
3.5. Representative samples of soil materials to be used for fill shall be tested in the laboratory
by the Consultant to determine the maximum density, optimum moisture content, and,
where appropriate, shear strength, expansion, and gradation characteristics of the soil.
3.6. During grading, soil or groundwater conditions other than those identified in the
Geotechnical Report may be encountered by flie Contractor. The Consultant shall be
notified immediately to evaluate the significance of the unanticipated condition
4. CLEARING AND PREPARING AREAS TO BE FILLED
4.1. Areas to be excavated and filled shall be cleared and grabbed. Clearing shall consist of
complete removal above the groimd surface of trees, stumps, brush, vegetation, man-made
structures and similar debris. Grubbing shall consist of removal of stumps, roots, buried
logs and other unsuitable material and shall be performed in areas to be graded. Roots and
other projections exceeding 1-1/2 inches in diameter shall be removed to a depth of 3 feet
below the surface of the ground. Bonow areas ^all be grubbed to the extent necessary to
provide suitable fill materials.
GI rev. 8/98
4.2. Any asphalt pavement material removed during clearing operations shouid be properly
disposed at an approved off-site facility. Concrete fragments which are free of reinforcing
steel may be placed in fills, provided diey are placed in accordance with Section 6.2 or 6.3
ofthis document.
4.3. After clearing and gmbbing of organic matter or other unsuitable material, loose or porous
soils shall be removed to the depth recommended in the Geotechnical Report The depth of
reraoval and compaction shall be observed and approved by a representative of the
Consultant The exposed surface shall then be plowed or scarified to a minimum depth of
6 inches and until the surface is fiee from uneven features that would tend to prevent
uniform compaction by the equipment to be used.
4.4. Where the slope ratio of the original ground is steeper than 6:1 (horizontal:vertical), or
where recommended by the Consultant, the original ground should be benched in
accordance with the following illustration.
TYPICAL BENCHING DETAIL
Rnish Grade Originai Ground
Finish Slcpe Surface
Remove All
Unsuitable Material
As Reconimended By
Soil Engineer Siope Tq Be Such That
Sloughing Gr Sliding
Does Not Occur
See Note 1 See Note2—'
No Scale
DETAIL NOTES: (1) Key width "B" should be a mininwnn of 10 feet wide, or sufficientiy wide to
pennit complete coverage with die compaction equipment used. TTie base of the
key should be graded horizontal, or inclined slightly into the natural slope.
(2) The outside of the bottom key Should be below the topsoil or unsuitable surficial
material and at least 2 feet into dense formational material. Where hard rock is
exposed in the bottom of the key. die depth and configuration of the key may be
modified as approved by the Consultant
GI rev. 8/98
4.5. After areas to receive fill have been cleared, plowed or scarified, die surface shouid be
disced or bladed hy the Contractor until it is unifonn and free from large clods. The area
should then be moisture conditioned to achieve die proper moisture content, and compacted
as recommended in Section 6.0 of these specifications.
5. COMPACTION EQUIPMENT
5.1. Compaction of soil or soil-rock fill shall be accomplished by sheepsfoot or segmented-steel
wheeled rollers, vibratory rollers, multiple-wheel pneumatic-tired rollers, or other types of
acceptable compaction equipment Equipment shall be of such a design that it will be
capable of compacting the soil or soil-rock fill to the specified relative compaction at the
specified moisture content
5.2. Compaction of rock fills shall be perfonned in accordance with Section 6.3.
6. PLACING, SPREADING AND COMPACTION OF FILL MATERIAL
6.1. Soil fill, as defined in Pan^ph 3.1.1, shall be placed by the Contractor in accordance with
the following recommendations:
6.1.1. Soil fill shall be placed by the Contractor in layers that, when compacted, should
generally not exceed 8 inches. Each layer shall be spread evenly and shall be
thoroughly mixed chuing spreading to obtain unifonnity of material and moisture
in each layer. The entire fill shall be constructed as a unit in nearly level lifts.
Rock materials greater than 12 inches in maximum dimension shall be placed in
accordance with Section 6.2 or 6.3 of these specifications.
6.1.2. In general, the soil fill shall be compacted at a moisture content at or above the
optunum moisture content as determined by ASTM D1557-91.
6.1.3. When the moisture content of soil fill is below that specified by the Consultant,
water shall be added by die Contractor until the moisture content is in the range
specified.
6.1.4. When the moisture content of the soil fill is above the range specified by the
Consultant or too wet to achieve proper compaction, the soil fill shall be aerated by
the Contractor by blading/mixing, or other satisfactory methods until the moisture
content is within the range specified.
GI rev. 8/98
6.1.5. After each layer has been placed, mixed, and spread evenly, it shall be thoroughly
compacted by the Contractor to a relative compaction of at least 90 percent
Relative compaction is defined as die ratio (expressed in percent) of die in-place
dry density of the compacted fill to the maximum laboratory dry density as
determined in accordance widi ASTM D1557-91. Compaction shall be continuous
over the entire area, and compaction equipment shall make sufficient passes so that
the specified minimum relative compaction has been achieved throughout the
entire fill.
6.1.6. Soils having an Expansion Index of greater than 50 may be used in fills if placed at
least 3 feet below finish pad grade and should be compacted at a moisture content
generally 2 to 4 percent greater than the optimum moisture content for the material.
6.1.7. Properly compacted soil fill shall extend to the design surface of fill slopes. To
achieve proper compaction, it is recommended that fill slopes be over-built by at
least 3 feet and then cut to the design grade. This procedure is considered
preferable to track-walking of slopes, as described in the follovving paragraph.
6.1.8. As an altemative to over-building of slopes, slope faces may be back-rolled with a
heavy-duty loaded sheepsfoot or vibratray roller at maximum 4-foot fill height
intervals. Upon completion, slopes should dien be track-walked with a D-8 dozer
or similar equipment, such that a dozer track covers all slope surfaces at least
twice.
6.2. Soil-rock fill, as defined in Paragraph 3.1.2, shall be placed by the Contractor in accordance
with the following recommendations:
6.2.1. Rocks larger than 12 inches but less than 4 feet m maximum dimension may be
mcorporated into the compacted soil fill, but shall be limited to the area measured
15 feet muiimum horizontally from the slope face and 5 feet below finish grade or
3 feet below the deepest utility, whichever is deeper.
6.2.2. Rocks or rock fragments up to 4 feet in maximum dimension may either be
individually placed or placed in windrows. Under certain conditions, rocks or rock
fragments up to 10 feet in maximum dimension may be placed using similar
methods. The acceptability of placing rock materials greater than 4 feet in
maximum dimension shall be evaluated during grading as specific cases arise and
shall be approved by the Consultant prior to placement.
GI rev. 8/98
6.2.3. For individual placement sufficient space shall be provided between rocks to allow
for passage of compaction equipraent.
6.2.4. For windrow placement, the rocks should be placed in trenches excavated in
properly compacted soil fill. Trenches shouid be approximately 5 feet wide and 4
feet deep in maximum dimension. The voids around and beneath rocks should be
filled witii approved granular soil having a Sand Equivalent of 30 or greater and
should be compacted by flooding. Windrows may also be placed utilizing an
"open-fece" method in lieu of the trench procedure, however, this method should
first be approved by the Consultant
6.2.5. Windrows should generally be parallel to each other and may be placed either
parallel to or perpendicular to the feee of the slope depending on the site
geometry. The minimum horizontal spacing for windrows shall be 12 feet
center-to-center with a 5-foot stagger or offset from lower courses to next
overlying course. The minimura vertical spacing between windrow courses shall
be 2 feet fixjm the top of a lower windrow to die bottom of the next higher
windrow.
6.2.6. All rock placement, fill placement and flooding of approved granular soil in the
windrows must be continuously observed by the Consultant or his representative.
6.3. Rock fills, as defined in Section 3.1.3., shall be placed by the Contractor in accordance with
the following recommendations:
6.3.1. The base of the rock fill shall be placed on a sloping surface (minimum slope of 2
percent, raaximum slope of 5 percent). The surface shall slope toward suitable
subdrainage outiet facilities. The rock fills shall be provided with subdrains during
construction so that a hydrostatic pressure buildup does not develop. The
subdrains shall be permanently connected to controlled drainage facilities to
control post-construction infiltration of water.
6.3.2. Rock fills shall be placed m lifts not exceeding 3 feet Placement shall be by rock
trucks traversing previously placed lifts and dumping at the edge of the currentiy
placed lift. Spreading of the rock fill shall be by dozer to facilitate seating of the
rock. The rock fill shall be watered heavily during placement. Watering shall
consist of water tracks traversing in front of the cunent rock lift face and spraying
water continuously during rock placement Compaction equipment with
compactive energy comparable to or greater than that of a 20-ton steel vibratory
roller or other compaction equipment providing suitable energy to achieve the
GI rev. 8/98
required compaction or deflection as recommended in Paragraph 6.3.3 shall be
utilized. The number of passes to be made will be determined as described in
Paragraph 6.3.3. Once a rock fill lift has been covered witii soil fill, no additional
rock fill lifts will be pennitted over the 50// fill.
6.3.3. Plate bearing tests, in accordance with ASTM D1196-64, may be performed in
both the compacted soU fill and in the rock fill to aid in determining the number of
passes ofthe compaction equipraent to be performed. If performed, a minimum of
three plate bearing tests shall be performed in the properly compacted soil fill
(minimum relative compaction of 90 percent). Plate bearing tests shall tiien be
performed on areas of rock fill having two passes, four passes and six passes ofthe
compaction equipment, respectively. The number of passes required for die rock
fill shall be determined by comparing the results of the plate bearing tests for the
soil fill and the rock fill and by evaluating the deflection variation with number of
passes. The required number of passes of the compaction equipraent will be
performed as necessary until the plate bearing deflections are equal to or less than
that detennined for the properly compacted soil fill. In no case will the required
number of passes be less than two.
6.3.4. A representative of the Consultant shall be present during rock fill operations to
verify that the minimum number of "passes" have been obtained, that water is
being properly applied and tiiat specified procedures are being followed. The
actual number of plate bearing tests will be determined by the Consultant during
grading. In general, at least one test should be performed for each approximately
5,000 to 10,000 cubic yards of rac* fill placed.
6.3.5. Test pits shall be excavated by the Contractor so that the Consultant can state that,
in his opinion, sufficient water is present and that voids between large rocks are
properly filled with smaller rock material. In-place density testing will not be
required in the rock fills.
6.3.6. To reduce the potential for "pipmg" of fines into the rock fill from overlying soil
fill raaterial, a 2-foot layer of graded filter material shall be placed above the
uppermost lift of rock fill. The need to place graded filter material below the rock
should be determined by the Consultant prior to commencing grading. The
gradation of the graded filter material will be determined at the time die rock fill is
being excavated. Materials typical of the rock fill should be submitted to the
Consultant in a timely manner, to allow design of the graded filter prior to the
commencement of rock fill placement
GI rev. 8/98
6.3.7. All rock fill placement shall be continuously observed during placement by
representatives of the Consultant
7. OBSERVATION AND TESTING
7.1. The Consultant shall be die Owners representative to observe and perform tests during
clearing, grabbing, filling and compaction operations. In general, no raore than 2 feet in
vertical elevation of soil or soil-rock fill shall be placed without at least one field density
test being performed widiin tiiat mterval. In addition, a minimum of one field density test
shall be performed for every 2,000 cubic yards of soil or soil-rock fill placed and
compacted.
7.2. The Consultant shall perform random field density tests ofthe compacted soil or soil-rock
fill to provide a basis for expressing an opinion as to whether the fill material is compacted
as specified. Density tests shall be performed in die compacted materials below any
disturbed surface. When diese tests indicate thatthe density of any layer of fill or portion
thereof is below that specified, the particular layer or areas represented by tiie test shall be
reworked until die specified density has been achieved.
7.3. During placement of rock fill, the Consultant shall verify diat the minimum number of
passes have been obtained per die criteria discussed in Section 6.3.3. The Consultant shall
request the excavation of observation pits aoA may perform plate bearing tests on die
placed rock fills. The observation pits will be excavated to provide a basis for expressing
an opinion as to whether the rock fill is properly seated and sufficient moisture has been
applied to the material. If performed, plate bearing tests will be performed randomly on
the surface of tiie most-recently placed lift Plate bearing tests will be performed to provide
a basis for expressing an opinion as to whether the rock fill is adequately seated. The
maximum deflection in the roc* fill determined in Section 6.3.3 shall be less than die
maxunum deflection of the properly corapacted soil fill. When any of the above criteria
indicate that a layer of rock fill or any portion thereof is below that specified, the affected
layer or area shall be reworked until the rock fill has been adequately seated and sufficient
raoisture applied.
7.4. A settlement monitoring program designed by the Consultant may be conducted in areas of
rock fill placement The specific design of lhe monitoring program shall be as
recommended in the Conclusions and Recommendations section of the project
Geotechnical Report or in the final report of testing and observation services performed
during grading.
GI rev. 8/98
7.5. The Consultant shall observe the placement of subdrains, to verify that the drainage devices
have been placed and constracted in substantial conformance with project specifications.
7.6. Testing procedures shall conforra to the following Standarcis as appropriate:
7.6.1. Soil and Soil-Rock Rlls:
7.6.1.1. Field Density Test, ASTM D1556-82, Density of Soil In-Place By the
Sand-Cone Method.
7.6.1.2. Field Density Test, Nuclear Meflkxl, ASTM D2922-81, Density of Soil and
Soil-Aggregate hi-Place by Nuclear Methods (Shallow Depth).
7.6.1.3. Laboratoiy Corapaction Tes^ ASTM D1557-91, Moisture-Density
Relations of Soils and Soil-Aggregate Mvctwes Using 10-Pound Hammer
and 18-Inch Drop.
7.6.1.4. Expansion Index Test, Uniform Building Code Standard 29-2, Expansion
Index Test.
1.62. Rock Fills
7.6.2,1. Field Plate Bearing Test, ASTM Dl 196-64 (Reapproved 1977) Standard
Methodfor Nonrepresentative Static Plate Load Tests of Soils and Flexible
Pavement Components, For Use in Evaluation and Design of Airport and
Highway Pavements.
8. PROTECTION OF WORK
8.1. During constraction, the Contractor shall properiy grade all excavated surfaces to provide
positive drainage and prevent ponding of water. Drainage of surface water shall be
controlled to avoid damage to adjoining properties or to finished work on the site. The
Contractor shall take remedial measures to prevoit erosion of freshly graded areas until
such time as permanent drarnage and erosion control features have been installed. Areas
subjected to erosion or sedimentation shall be properly prepared in accordance with the
Specifications prior to placing additional fill or stmctures.
8.2. After completion of grading as observed and tested by the Consultant, no further
excavation or filluig shall be conducted except in conjunction with the services of the
Consultant
GI rev. 8/98
9. CERTIFICATIONS AND FINAL REPORTS
9.1. Upon completion of tiie work. Contractor shall fiimish Owner a certification by tiie Civil
Engineer stating tiiat tfie lots and/or building pads are graded to within 0.1 foot vertically of
elevations shown on the grading plan and diat all tops and toes of slopes are within 0.5 foot
horizontally of die positions shown on the grading plans. After installation of a section of
subdrain, the project Civil Engineer should survey its location and prepare an as-built plan
ofthe subdrain location. The project Civil Engineer should verify the proper outiet for the
subdrains and the Contractor should ensure that die drain system is free of obstractions.
9.2. The Owner is responsible for fumisliing a final as-graded soil and geologic report
satisfectory to die appropriate goveming or accepting agencies. The as-graded report
should be prepared and signed by a Califomia licensed Civil Engineer experienced in
geotechnical engineering and by a Califomia Certified Engineering Geologist, indicating
that the geotechnical aspects of the grading were perfonned in substantial conformance
with the Specifications or approved changes to the Specifications,
GI rev. 8/98