HomeMy WebLinkAboutCT 04-09; La Costa Greens Neighborhood 1.17; Update Soil and Geological Investigation; 2001-06-25UPDATE SOIL AND GEOLOGIC
INVESTIGATION
VILLAGES OF LA COSTA -
THE GREENS
CARLSBAD, CALIFORNIA
VOLUME I OF II
PREPARED FOR
REAL ESTATE COLLATERAL MANAGEMENT
COMPANY ' • —
MORROW DEVELOPMENT INCORPORAT
CARLSBAD, CALIFORNIA
JUNE 25, 2001 \ps\ \\
GEOCON
INCORPORATED
GEOTECHNICAL CONSULTANTS
Project No. 06403-12-03
June 25, 2001
Real Estate Collateral Management Company
c/o Morrow Development
1903 Wright Place, Suite 180
Carlsbad, California 92008
Attention: Mr. Tim O'Graciy
Subject:
Gentlemen:
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
UPDATE SOIL AND GEOLOGIC INVESTIGATION
In accordance with your authorization (Contract Number 342) and our proposal No. LG-01192 dated
April 10, 2001, we have updated our supplemental geotechnical investigation report of the 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 of this 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,
JON INCORRQ:
D.
RCE 22527
AS:DFL:dlj
(6/del) Addressee
li Sadr
CEG 1778
6960 Flanders Drive • San Diego, California 92121-2974 • Telephone (858) 558-6900 • Fax (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 (Qln) 4
3.4 Terrace Deposits (Qt) 4
3.5 Alluvium (Qal) 5
3.6 Colluvium (Qc) 5
3.7 Topsoil (not mapped) 5
3.8 Undocumented Fill (Qudf) „ 6
3.9 Compacted Fill (Qcf) 6
4. GROUNDWATER 6
5. GEOLOGIC HAZARDS 7
5.1 Faulting and Seismicity 7
5.2 Liquefaction ™ 8
6. GEOTECHNICAL LAND USE CHARACTERISTICS 8
6.1 General 8
6.2 Slope Stability 8
6.2.1 Stability Considerations 8
6.2.2 Stability Analysis 9
6.3 Alluvium Settlement Considerations 11
6.4 Existing Utility Lines Considerations 12
6.5 Rippability of Hard Rock 12
7. CONCLUSIONS AND RECOMMENDATIONS 14
7.1 General 14
7.2 Groundwater 15
7.3 Soil Excavation Characteristics 15
7.4 Grading 15
7.5 Subdrains 17
7.6 Settlement 18
7.7 Settlement Monitoring 18
7.8 Bulking and Shrinkage Factors 19
7.9 Slope Stability 20
7.10 Foundation Recommendations 20
7.11 Retaining Walls and Lateral Loads 24
7.12 Slope Maintenance 25
7.13 Drainage 26
7.14 Plan Review 26
LIMITATIONS AND UNIFORMITY OF CONDITIONS
TABLE OF CONTENTS (Continued)
MAPS AND ILLUSTRATIONS
Figure 1, Vicinity Map
Figure 2-10, Geologic Maps (Map Pocket, see Volume II)
Figures 11-13, Geologic Cross Sections (Map Pocket, see Volume IT)
Figure 14, Typical Subdrain Detail
Figure 15, Typical Buttress Detail
Figure 16, Typical Stability Fill Detail
Figure 17, Slope Stability Analysis-Cut
Figure 18, Slope Stability Analysis-Fill
Figure 19, Surficial Slope Stability Analysis
APPENDIX A
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-16 8, Logs of Trenches
Figures A-169 through A-l 85, Logs of Ah- Track Borings
APPENDIX B
LABORATORY TESTING
Table B-I, Summary of Laboratory Maximum Dry Density and Optimum Moisture
Content Test Results
Table B-II, Summary of Laboratory Direct Shear Test Results
Table B-III, Summary of Laboratory Expansion Index Test Results
APPENDIX C
BORING AND TRENCH LOGS AND CONE PENETROMETER TESTS FROM
PREVIOUS INVESTIGATIONS
APPENDIX D
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
APPENDIX F
RECOMMENDED GRADING SPECIFICATIONS
UPDATE SOIL AND GEOLOGIC INVESTIGATION
1. PURPOSE AND SCOPE
This report presents the consolidated findings of current and previous soil and geologic investigations
for The Greens of The Villages of La Costa in Carlsbad, California (see Vicinity Map, Figure 1). 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, recommended grading specifications and
priliminary foundation design criteria. It should be noted that the site was previously known as La
Costa Northwest.
The scope of the investigation included a review of the following:
1. 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).
2. Preliminary Rippability Study, La Costa Northwest, Carlsbad, California, prepared by
Geocon Incorporated, dated September 25, 1996 (Project No. 04230-12-03).
3. Middle Eocene Paralic Fades, Northern San Diego County, California, by L. I. Eisenberg
and P. K. Abbott, Eocene Geologic History San Diego Region, SEPM-GSA Fieldtrip
Guidebook, 1991.
4. Geologic Maps of the Northern part of San Diego County, California, DMG open file report
96-02.
5. Geotechnical Investigation for Rancho Carrillo Project - Major Roads, Carlsbad,
California, prepared by Geocon Incorporated, dated January 15, 1993 (Project No. 04787-
12-01).
6. Preliminary Geotechnical Investigation, Bressi Ranch, Carlsbad, California, 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, California,
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, California,
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.
10. Supplemental Soil and Geologic Investigation, Villages of La Costa-The Greens, Carlsbad
California, prepared by Geocon Incorporated, dated March 24, 2000 (Project No. 06403-
12-01).
Project No. 06403-12-03 -1- June 25, 2001
The scope of the most recent field investigation (March 2000) 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 southeastern corner of the 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
100 feet (1"= 100') scale, entitled Master Tentative Map for La Costa Greens, prepared by O'Day
Consultants, Inc., revised dated December 2000. The results of the field investigation are compiled on
the Geologic Maps, Figures 2 through 10.
2. SITE AND PROJECT DESCRIPTION
The project encompasses approximately 660 acres of property situated northeast of the intersection of
Alga Road and El Camino Real in the City of Carlsbad, California (see Vicinity Map, Figure 1).
Existing residential development borders the middle western, southeastern and southern portions,
with commercial and agricultural developments along the sputhwestern and northern portions,
respectively. A golf course lies within the south-cental valley area.
With the exception of two residential structures in the east-central portion, 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 Maps, Figures 2
through 10).
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 pattern 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 (MSL) along the southeast boundary to a low of approximately 60 feet MSL
within the main drainage basin towards the southern property boundary.
Project No. 06403-12-03 - 2 - June 25,2001
We understand that project development will consist of grading the site to form terraced and sheet-
graded building pads that eventually will receive approximately 800 residential units along with
associated infrastructure.
A review of the referenced Master Tentative Map For La Costa Greens indicates that 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 encountered during the investigations. The
surficial soils consist of compacted fill, undocumented fill, topsoil, colluvium, alluvium and landslide
debris. The formational units include Quaternary-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 Figures 2
through 10, Geologic Maps (map pocket).
3.1 Santiago Peak Volcanics (Jsp)
Fractured an,d weathered metavolcanic rocks of the Jurassic-aged Santiago Peak Volcanics are
exposed along the upper portions of slopes in the southeastern corner 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 hi the concluding
section of this 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 underlie the surficial
soils throughout the majority of the 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
Project No. 06403-12-03 ~- June 25, 2001
claystone and siltstone portions of the Santiago Formation are moderately to highly expansive.
Consideration should be given to restricting the placement or presence of these materials within 4 feet
of finish grade. Where selective grading is not practical and these expansive soils are placed or
exposed 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 of these 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. 4 classify these materials
with the Eocene-aged sediments of northern San Diego County as the Santiago Formation. This
should be taken into consideration in the review of logs of borings and trenches from our previous
studies, presented in Appendices C and D.
3.3 Lindavista Formation (Qln)
The Quaternary-aged Lindavista Formation comprised of light reddish-brown to orange gravelly silty
sandstones, was encountered as a cap of several feet on top of the Santiago Formation 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 of the 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 or settlement
sensitive improvements.
3.4.1 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 northern property boundary and encroaches off-site. In the event the property boundary
limits total removal, the proposed cut slope will be stabilized by construction of a buttress fill.
Project No. 06403-12-03 -4- June 25, 2001
Preferably, permission to grade off-site should be obtained to allow total removal with regrading
considering future planned grading on the adjacent property.
3.5 Alluvium (Qal)
The alluvium encountered onsite generally consists of dark brown sandy clays to clayey sands.
Within the major drainages groundwater was encountered at depths of 8 to 10 feet below the surface
during the site investigations. The maximum thickness of alluvium occurred hi CPT-4 which
encountered approximately 60 feet of relatively easily penetrable sediments near the confluence of
the tributary drainages. The bottom part of the sediments may consist of weathered Santiago
Formation or more granular materials, the extent of which is not known. The results of the field
investigation and analysis of the 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
settlement problems. The anticipated depths of alluvium removal and recompaction are shown on
Figures 2 through 10. These removal depths 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.
3.6 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 Figures 2 through 10. 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 eastern 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 of this report.
3.7 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.
Project No. 06403-12-03 - 5 - June 25,2001
3.8 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
extents are shown on the Geologic Maps. No trenches were performed in the embankment fills, but
observation of the exposed surficial soils indicates that the earthern structures are composed of silt
and clay derived from on-site materials.
Later generations of fill are associated with the burial of pipelines and utilities, construction of roads
and adjoining subdivisions, or fill disposal areas in canyon areas along the southern margins of the
property. All undocumented fill are considered unsuitable in their present conditions and should be
removed and recompacted in areas of planned improvements.
3.9 Compacted Fill (Qcf)
Compacted fills have been placed within the project site during recent construction 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
constructed as a part of the development of the Rancho Carrillo project to the east. The grading for
the pump station, sewer trench backfill and construction of the access road was performed under
testing and observation services of Geocon Incorporated and reported in References 5 and 6.
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 excavations along the
northern and eastern boundary (see Boring Nos. LB-1, LB-8, LB-13, LB-17 and LB-19 of the current
study, and Boring Nos. B-4, B-ll, and B-13 through B-17 of our previous investigation,
Appendix C). These seeps were found to occur within the Santiago Formation or within the landslide
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 our previous investigation). The relationship between alluvial removals and
Project No. 06403-12-03 - 6 - June 25, 2001
the position of groundwater table will be discussed in the Conclusions and Recommendations section
of this report. In general, seepage and groundwater conditions should be expected to vary seasonally
as well as from irrigation and run off from off-site development up gradient.
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 O.SOg 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
Rose Canyon
Newport-Inglewood-Offshore
Coronado Bank
Elsinore- Julian
Elsinore-Temecula
Palos Verdes
San Jacinto-Anza •
Distance
From Site
(miles)
7
10
22
23
23
41
46
Maximum Credible Event
Maximum
Credible
(Mag.)
6.90 -
6.90
7.40
7.10
6.80
7.10
7.20
Peak Site
Acceleration
(g)
0.30
0.23
0.16
0.13
0.11
0.07
0.06
Maximum Probable Event
Maximum
Probable
(Mag.)
5.70
5.80
6.30
6.40
6.30
6.20
6.90
Peak Site
Acceleration
(g)
0.15
0.11
0.08
0.08
0.07
0.03
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 significantly different thari that of the surrounding developments of similar
geologic settings in the Carlsbad area.
Project No. 06403-12-03 -7-June25,2001
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
dense nature of the formational units, the removal and recompaction of the surficial soils and fine-
grained nature of the alluvial soils, the potential for seismically included soil liquefaction occurring at
the site is considered to be low. The only exception may be along the eastern portion of the Poinsettia
Lane embankment fill. Isolated zones of relatively loose saturated soils below water table may
liquefy during a strong gound motion.
In addition to remedial grading, the area will receive 10 to 20 feet of fill that would contribute to
densification of the susceptible zones. This will aid to reduce the potential for liquefaction.
Liquefaction analysis and further discussion will be presented in a separate report entitled
Geotechnical Investigation [for] Poinsettia Lane Between Stations 10+00 to 69+60.
6. GEOTECHNICAL LAND USE CHARACTERISTICS
6.1 General
Based on findings of this study, there are three primary geotechnical considerations impacting the
construction 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 (EPS). The second
consideration is the settlement characteristics of the alluvial deposits that cannot be efficiently
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.
Project No. 06403-12-03 - 8 - June 25, 2001
Slope stability analyses for these slopes have been performed utilizing the parameters shown in
Table 6.2.2.2. The results are presented in Appendix E. 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.
6.2.2 Stability Analysis
6.2.2.1 General
Computer analyses of slope stability were performed utilizing the SLOPEW program based on
simplified Janbu Method of Slices or Simplified Bishop Method. The complexity of the site geology,
the results of the subsurface investigation, laboratory 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 the
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.
Details of stability and buttress fill construction are addressed in section 7.9 below.
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 the fill soil to be used to stabilize the slopes. The results of the 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 addressed below. Locations by assigned number are shown on
Figures 2,4, 6 and 10.
Project No. 06403-12-03 -9- June 25, 2001
TABLE 6.2.2.2
SOIL STRENGTH PARAMETERS
Soil Type
Santiago Formation
Weak Clay Beds
Compacted Fill (buttress)
Bedding Plane Shears (EPS)
Angle of Internal Friction
<(> (degrees)
30
20
25
10
Cohesion
c (psf)
500
200
300
100
6.2.2.3 Cut Slope No. 1
This cut slope is located along the northern boundary. The conceptual grading plan indicates that the
maximum height of this slope will be approximately 45 feet. Figure E-l presents a geologic cross
section of the slope (K-K1). A bedding plane shear was encountered in Boring No. B-15 at the
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 northern property boundary. During the site investigation, a
bedding plane shear (EPS) was encountered at the approximate elevation of 261 feet MSL (see Cross
Section LL' on Figure E-l). In addition, the eastern 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 the toe of
the proposed cut slope. Geologic Cross Section M-M' Figure E-l depicts the 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 of this slope (see Cross Sections GG', NN', and Boring No. B-l). The slope stability analyses
Project No. 06403-12-03 -10-June25,2001
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
construction of a stability fill due to the possibility of groundwater seepage near the toe of the slope.
6.2.2.7 Cut Slope 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 OO' on
Figure E-l). Stability analysis indicates a factor of safety of less than 1.5 for the proposed cut slope.
Therefore, a buttress fill with a minimum shear key width of 40 feet will be necessary to stabilize
this slope.
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 hi place. Planned embankment fill placed within certain portions
of the main drainages will be affected by the compressibility of alluvial soils not removed.
The amount of settlement that could occur is a function of thickness and compressibility of the layers
within the alluvial deposits, and the magnitude of additional vertical loading resulting from placement
of fill and/or structures. The majority of the alluvium/colluvium will be removed within the 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 underneath the proposed Poinsettia Lane
and the area just to the north. A review of the conceptual grading plan indicates that between
approximately 10 and 20 feet of fill will be placed on the Poinsettia Lane and up to approximately
25 feet on the area just north of the road within the northeast portion of the project site. The amount
of estimated settlement, depending upon the specific locations, ranges from 2 to 8 inches. The
majority of the settlement is anticipated to occur during construction. The post-construction
settlement dependant on the proposed fill height will take anywhere from 2 to 6 months for
90 percent consolidation (primary settlement).
The proposed embankment 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
settlement to occur is estimated at 6 to 8 months.
Project No. 06403-12-03 - 11 - June 25, 2001
The removal and recompaction of the 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 constraint in
this area.
If the site development schedule cannot accommodate the time required to allow the primary
settlement to dissipate, the installation of wick drains prior to placement of the embankment fills
should be considered. The use of wick drains could reduce the settlement period of 6 to 8 months to 1
to 3 months.
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 Existing Utility Lines Considerations
A group of five sewer lines and a single 24-inch diameter forced sewer line traverse the site from east
to west, along the future Poinsettia Lane alignment. In certain areas, underlain primarily by alluvial
soils, planned road way embankment grading will conflict with the alignments of the existing sewer
lines. It is understood that some of these lines will be abandoned. The remaining lines will have to
stay in operation. They will ultimately be relocated within the Poinsettia Lane embankment, after
primary settlement is completed. A more detailed discussion of this issue along with conclusions and
recommendations will be presented in a separate report entitled Geotechnical Investigation for
Poinsettia Lane Between Stations 10+00 and 69+60.
6.5 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 traverses were conducted in 1996. This was followed up by
excavating 17 air-track borings during the recent 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 fracture zones.
Project No. 06403-12-03 -12 - June 25, 2001
The approximate depth of rippable materials are shown next to the locations of the air-track borings
on Figures.8 and 10. The logs of the air-track borings are presented in Appendix A.
Project No. 06403-12-03 -13 - June 25,2001
7. CONCLUSIONS AND RECOMMENDATIONS
7.1 General
7.1.1 No soil or geologic conditions were encountered during this investigation performed 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 structural 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 construction of site improvements. A surcharge
grading program, including settlement instrumentation and monitoring will be required for
those areas of planned improvements within the zone of influence of left-in-place
alluvial soils.
7.1.4 The stability of proposed cut slopes within the site possess a significant geotechnical
consideration to development. Drained buttresses 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 excavations. Blasting
along with special handling of the rock should be anticipated. Building pads and streets
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.
Furthermore, the remedial grading should consider future grading planned for the 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 Department of Environmental Health.
Project No. 06403-12-03 -14 - June 25, 2001
7.2 Groundwater
7.2.1 The principal portion of the project where ground-water will impact site development is the
area within the main canyon. Remedial grading of the compressible alluvial deposits will
be limited to approximately 3 feet above the groundwater. Groundwater seepage was also
encountered in some of the exploratory excavations. It is recommended that periodic
observations be made by the soil engineer or the engineering geologist during grading for
evaluating 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 of the 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 at existing grade. 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 of this section shall take precedence.
7.4.2 Prior to commencing grading a preconstruction conference should be held at the site with
the grading contractor, civil engineer and geotechnical engineer in attendance. Specifiedi
soil handling and/or the grading plans can be discussed at that time.
Project No. 06403-12-03 -15 - June 25,2001
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 hi 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 of the 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 structural fill compacted
in layers to design finish grade elevations. In general, soils present on site are suitable for
re-use as fill if free from vegetation, debris and other deleterious material. All fill,
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.
7.4.9 Areas of planned improvements designated as underlain by or within the zone of influence
of left-in-place alluvium should be surcharged by placing additional fill to a depth of 5 feet
above proposed finished grade, including slopes. The surcharge shall remain hi place until
the soils engineer recommends removal. The decision to surcharge should be made early in
the grading phase and based on the benefit to the overall development schedule.
Project No. 06403-12-03 -16- June 25,2001
7.4.10 To reduce the potential for differential settlement, it is recommended that the 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, the 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 streets underlain 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 the canyons to be filled. A cross-section of the subdrain
configuration is presented on Figure 14. The lower 20 feet of the subdrain installation
should consist of nonperforated pipe with a concrete cutoff wall constructed immediately
below the junction of the perforated pipe with the nonperforated pipe. The cutoff wall
should extend at least 6 inches below the sides and bottom of the subdrain trench 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
necessary to extend the nonperforated outlet pipe beyond the limits of planned grading
operations. As an alternative design, a properly compacted fill may be placed within the
lower canyon bottom until the minimum drainage gradient is achieved. Two subdrains
would then be installed along the fill/natural ground contacts. Where the 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 buttresses and stability fills should be connected to the canyon
subdrain or storm drain system where possible and have cleanouts installed where possible.
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 outlet for the canyon subdrains and the contractor should ensure
that the dram system outlet is free of obstructions. The recommended locations of the
Project No. 06403-12-03 ' -17- June 25,2001
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 settlement as a
function of the thickness of the compressible soils remaining and the loading of the fill.
The majority of the settlement 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 hi these areas be planned to occur early in the project
grading period to reduce the potential for conflict with installation of improvements.
Grading plans should include placement of a surcharge (5 feet) above the planned grade.
7.6.3 If the grading for Poinsettia Lane occurs prior to the grading of the project, it is
recommended that the embankment fill be widened approximately 35 feet north of the road
right-of-way to reduce the potential of impact of the future grading within the adjacent
areas.
7.6.4 Installation of a wick drain system may be considered as a means to enable greatly
accelerating the time-rate of settlement.
7.6.5 Settlement 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 monitoring program will be
required as discussed below. The numbers and locations of settlement monuments will be
determined after grading plans are finalized.
7.7.2 At designated locations within the bottom of the over-excavated areas, a 4-foot-square, l/2-
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 contractor.
Project No. 06403-12-03 -18 - June 25, 2001
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
tune a surface settlement monument will be installed to monitor settlement 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 of the maximum laboratory density. Thus,- the contractor has approximately a
10 percent range of control 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
Soil Unit
Fill and Topsoil
Alluvium and Colluvium
Landslide Debris
Terrace Deposits
Santiago Formation and Lindavista Formation
Santiago Peak Volcanics
Shrink/Bulk Factor
10- 15 percent shrink
10-15 percent shrink
5-10 percent shrink
2-7 percent shrink
3-5 percent bulk
20-30 percent bulk
Project No. 06403-12-03 -19-June 25,2001
7.9 Slope Stability
7.9.1 Due to the presence of adverse geologic features within the Santiago Formation, we
recommend that certain cut slopes planned within the project be constructed as a drained
buttress fill to mitigate long term surficial slope stability ( see section 6.2), A typical detail
showing construction of a buttress fill is presented on Figure 15.
7.9.2 Construction of drained stability fill may also be required for cut slope No. 4 (see
Section 6.2). A typical detail showing construction of a drained stability fill is presented on
Figure 16.
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 17
and 18). Surficial slope stability analysis of fill slopes also indicates a factor of safety in
excess of 1.5 (see Figure 19). ,
7.9.4 The results of slope stability analyses for cut slopes requiring buttress 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 significantly from
those anticipated and to determine if adverse bedding, fractures 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 alternative, 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 structures and are
based upon the assumption that the soil conditions within 4 feet of finish pad subgrade
Project No. 06403-12-03 - 20 - June 25, 2001
consist of granular "low" expansive soil (Expansion Index less than 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, II, or III 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
I
II
in
Minimum
Footing Depth
(inches)
12
18
24
Continuous Footing
Reinforcement
One No. 4 bar top and bottom
Two No. 4 bars top and bottom
Two No. 5 bars top and bottom
Interior Slab
Reinforcement
6 x 6 - 10/10 welded wire
mesh at slab mid-point
No. 3 bars at 24 inches on
center, both directions
No. 3 bars at 18 inches on
center, both directions
CATEGORY CRITERIA
Category I: Maximum fill thickness is less than 20 feet and Expansion Index is less than or
equal to 50.
Category II: Maximum fill thickness is less than 50 feet and Expansion Index is less than or
equal to 90, or variation in fill thickness is between 10 feet and 20 feet.
Category HI: Fill thickness exceeds 50 feet, or variation in fill thickness exceeds 20 feet, or Expansion
Index exceeds 90, but is less than 130, or alluvium left in place.
Notes:
1. All 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. All interior living area concrete slabs should be at least 4 inches thick for Categories I and II and 5
inches thick for Category m. This applies to both building and garage slabs-on-grade.
4. All interior concrete slabs should be underlain by at least 4 niches (3 inches for Category HI) of
clean sand or crushed rock.
5. All 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.
Project No. 06403-12-03 -21-June25,2001
7.10.3 The use of isolated footings which are located beyond the perimeter of the building and
support structural elements connected to the building is not recommended for Category III.
Where this condition cannot be avoided, the isolated footings should be connected to the
building foundation system with grade beams.
7.10.4 For Foundation Category III, 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 than 20 feet high, building and wall footings should be deepened
such that the bottom outside edge of the footing is at least 7 feet horizontally from
the face of the slope.
• Where the height of the fill slope exceeds 20 feet, the minimum horizontal distance
should be increased to H/3 (where H equals the vertical distance from the top of the
slope to the 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 of the slope. An acceptable alternative to deepening the footings would be
the use of a post-tensioned slab and foundation system or increased footing and
slab reinforcement. Specific design parameters or recommendations for either of
these alternatives 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 the face of the slope, regardless of slope
height.
• Swimming pools located within 7 feet of the top of cut or fill slopes are not
recommended. Where such a condition cannot be avoided, we recommend 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. 06403-12-03 - 22 - June 25,2001
swimming pools located near the top of fill slopes greater than 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 brittle, such as concrete
flatwork or masonry walls may experience some distress if located near the top of a
slope, it is generally 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 distress. Geocon Incorporated should be
consulted for specific recommendations.
7.10.7 As an alternative to the foundation recommendations for each category, consideration
should be given to the use of post-tensioned concrete slab and foundation systems for the
support of the proposed structures. The post-tensioned systems should be designed by a
structural 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 distress due to differential fill settlement. The post-tensioned design should
incorporate the geotechnical parameters presented on the following table entitled 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
1. Thornthwaite Index
2. Clay Type - Montmorillonite
3 . Clay Portion (Maximum)
4. Depth to Constant Soil Suction
5. Soil Suction
6. Moisture Velocity
7. Edge Lift Moisture Variation Distance
8. Edge Lift
9. Center Lift Moisture Variation Distance
10. Center Lift
Foundation Category
I
-20
Yes
30%
7.0ft.
3.6ft.
0.7 in./mo.
2.6ft.
0.41 in.
5.3ft.
2.12 in.
II
-20
Yes
50%
7.0ft.
3.6ft.
0.7 in./mo.
2.6ft.
0.78 in.
5.3ft.
3.21 in.
Ill
-20
Yes
70%
7.0ft.
3.6ft.
0.7 in./mo.
2.6ft.
1.15 in.
5.3ft.
4.74 in.
7.10.8 UBC Section 1816 uses interior stiffener beams in its structural design procedures. If the
structural engineer proposes a post-tensioned foundation design method other than UBC
Section 1816, we recommend that interior stiffener beams be used for Foundation
Categories n and HI. The depth of the perimeter foundation should be at least 12 inches for
Project No. 06403-12-03 -23-June 25,2001
Foundation Category I. Where the Expansion Index for a particular building pad exceeds
50 but is less than 91, the perimeter footing depth should be at least 18 inches; and where it
exceeds 90 but is less than 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 structural 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 the 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
occurrence may be reduced and/or controlled by limiting the slump of the concrete, proper
concrete placement and curing, and by the placement of crack control joints at periodic
intervals, in particular, where re-entry slab corners occur.
7.11 Retaining Walls and Lateral Loads
7.11.1 Retaining walls not restrained at the 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 than 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 the 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 0.001H 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 the seepage could be a nuisance or otherwise adversely impact the
property adjacent to the base of the1 wall. The above recommendations assume a properly
compacted granular (Expansion Index less than 50) backfill material with no hydrostatic
Project No. 06403-12-03 -24- June 25,2001
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 within 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 than 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
density 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 friction coefficient of 0.4 may be used for resistance to sliding between soil and
concrete. This friction coefficient may be combined with the allowable passive earth
pressure when determining resistance to lateral loads.
7.11.6 The recommendations presented above are generally applicable to the design of rigid
concrete or masonry retaining walls having a maximum height of 8 feet. In the event that
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 (horizontahvertical) may, under conditions which are both
difficult to prevent and predict, be susceptible to near surface (surficial) slope instability.
The instability is typically 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 irrigation, 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 irrigation 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. 06403-12-03 - 25 - June 25, 2001
either 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 incorporation of the above recommendations should reduce the
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
finish grade the building pads after structures and other improvements are in place, so that
drainage water from the building pads and adjacent properties is directed to streets away
from foundations and tops of slopes. Experience has shown that even with these provisions,
1 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 Plan Review
7.14.1 The geotechnical engineer and engineering geologist should review the grading plans prior
to finalization to verify their substantial conformance with the recommendations of this
report and determine the necessity for additional comments, recommendations and/or
analysis.
7.14.2 In the event foundations are designed as post-tensioned, the geotechnical engineer should
also review the foundation plans prior to finalizing to verify conformance with the
recommendations of this report.
Project No. 06403-12-03 - 26 - June 25,2001
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 construction,
or if the proposed construction 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 information 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 contractor and subcontractors 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, the findings of this report may be invalidated wholly
or partially by changes outside our control. Therefore, this report is subject to review and
should not be relied upon after a period of three years.
Project No. 06403-12-01 June 25,2001
1 A1GUILA PL
2 VIA CALDRON
3 VIA ESTRim
4 VIA SANTIAGO
5 CTC TMBUCO
6
7 A»D OLMEOA
SOURCE: 2001 THOMAS BROTHERS MAP
SAN DIEGO COUNTY, CALIFORNIA
REPRODUCED WITH PERMISSION GRANTED BY THOMAS BROTHERS MAPS.
THIS MAP IS COPYRIGHTED BY THOMAS BROS. MAPS. IT IS UNLAWFUL TO COPY
OR REPRODUCE ALL OR ANY PART THEREOF, WHETHER FOR PERSONAL USE OR
RESALE. WITHOUT PERMISSION
N
NO SCALE
GEOCON
INCORPORATED
GEOTECHNICAL CONSULTANTS
6960 FLANDERS DRIVE - SAN DIEGO, CALIFORNIA 92121-2974
PHONE 858 558-6900 - FAX 858 558-6159
VICINITY MAP
VILLAGES OF LA COSTA-THE GREENS
CARLSBAD, CALIFORNIA
AS / JMW DSK / EOOOD DATE 06-25-2001 | PROJECT NO. 06403 - 12-03 FIG. 1
XJ7B1
APPROVED FILTER FABRIC
6" DIA. PERFORATED
SUBDRAIN PIPE
1" MAX. OPEN-GRADED
AGGREGATE 9 CUBIC FT/FT.
MINIMUM
m »*«• •j'O'.i.. !*••»• *.j*t>.v L* «••?*(]•.» :.*
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 DRAIN 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
GEOTECHNICAL CONSULTANTS
6960 FLANDERS DRIVE - SAN DIEGO, CALIFORNIA 92121 - 2974
PHONE 858 558-6900 - FAX 858 558-6159
VILLAGES OF LA'COSTA-THE GREENS
CARLSBAD, CALIFORNIA
AS/JMW DSK/EOOOO DATE 06-25-2001 PROJECT NO. 06403-12 - 03 FIG. 14
X/R14/1DRAFTING/JIMW/SD
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
2 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 $=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. ADDITIONAL DRAINS WILL BE REQUIRED WHERE AREAS OF SEEPAGE ARE ENCOUNTERED.
5. FILTER MATERIAL TO BE 1-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 TO DRAIN AT 1 PERCENT MINIMUM TO APPROVED OUTLET.
TYPICAL BUTTRESS DETAIL
GEOCON O
INCORPORATED ^MT
GEOTECHNICAL
6960 FLANDERS
PHONE 619 558-
AS/JMW
CONSULTANTS
DRIVE - SAN DIEGO, CALIFORNIA 92121-2974
6900 - FAX 619 558-6159
REV/DFL
MARIANO
CARLSBAD, CALIFORNIA
DATE 06-25-2001 PROJECT NO. 06195 - 12 - 03 FIG 15
X/R14/1DRAFTING/JIMW/BUTFIL2
EXISTING GROUND SURFACE
FINISHED SLOPE
WHERE PRACTICAL
(NOTE 7)
NOTE 1
FINISHED LOT GRADE
UNDISTURBED
FORM AT! ON AL
SOIL
NO SCALE
NOTES:
1 BASE OF STABILITY FILL TO BE 3 FEET INTO DENSE, FORMATIONAL SOILS SLOPING
A MINIMUM 5% INTO SLOPE
2 APPROVED PREFABRICATED CHIMNEY DRAIN PANELS (MIRADRAIN, TENSAR,
OR EQUIVALENT) SPACED APPROXIMATELY 30 FEET CENTER TO CENTER
3 FILTER MATERIAL TO BE 3/4-INCH, OPEN-GRADED CRUSHED ROCK ENCLOSED IN APPROVED FILTER FABRIC
4 COLLECTOR PIPE TO BE 4-INCH MINIMUM DIAMETER, PERFORATED, THICK-WALLED PVC SCEDULE 40 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 858 558-6900 - FAX 858 558-6159
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
JMW/JMW
X/R14/1DRAFT1NG/JIMWSTABFIL8
DSK/GTYP1 DATE 06-25-2001 PROJECT NO. 06403 - 12 - 03 FIG 16
PROJECT NO. 06403-12-01
ASSUMED CONDITIONS:
Slope Height
Slope Inclination
Total Unit Weight of Soil
Angle of Internal Friction
Apparent Cohesion
No Seepage Forces
H = 100 feet
2:1 (Horizontal :Vertical)
Yt =130 pounds per cubic foot
<j> = 30 degrees
C = 500 pounds per square foot
ANALYSIS:
Equation (3-3), Reference 1
Equation (3-2), Reference 1
Calculated Using Eq. (3-3)
Determined Using Figure 10, Reference 2
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,
Journal of Soil Mechanics and Foundation Design, No. SM6, November 1967.
CUT SLOPE STABILITY ANALYSIS
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
FIGURE 17
PROJECT NO. 06403-12-03
H = 50 feet
2:1 (Horizontal:Vertical)
Yt =130 pounds per cubic foot
<j> = 25 degrees
C = 300 pounds per square foot
ASSUMED CONDITIONS:
Slope Height
Slope Inclination
Total Unit Weight of Soil
Angle of Internal Friction
Apparent Cohesion
No Seepage Forces
ANALYSIS:
?C(j, = yHtanti) Equation (3-3), Reference 1
C
FS = NcfC Equation (3-2), Reference 1
?C(|) = 10 Calculated Using Eq. (3-3)
Ncf = 34 Determined 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,
Journal of Soil Mechanics and Foundation Design, No. SM6, November 1967.
FILL SLOPE STABILITY ANALYSIS
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
FIGURE 18
PROJECT NO. 06403-12-03
ASSUMED CONDITIONS:
Slope Height
Depth, of Saturation
Slope Inclination
Slope Angle
Unit Weight of Water
Total Unit Weight of Soil
Angle of Internal Friction
Apparent Cohesion
Slope saturated to vertical depth Z below slope face.
Seepage forces parallel to slope face
ANALYSIS:
H = Infinite
Z = 3 feet
2:1 (Horizontal : Vertical)
i =26.5 degrees
YW
= 62.4 pounds per cubic foot
Yt = 130 pounds per cubic foot
0 = 25 degrees
C =300 pounds per square foot
FS = C + (yt - rw)Zcos2aan(Z>
y(Zsmicosi
= 2.4
REFERENCES:
(1) Haefeli, R. The Stability of Slopes Acted Upon by Parallel Seepage, Proc. Second International
Conference, SMFE, Rotterdam, 1948,1, 57-62.
(2) Skempton, A. W., and F. A. Delory, Stability of Natural Slopes in London Clay, Proc. Fourth
International Conference, SMFE, London, 1957, 2, 378-81.
SURFICIAL SLOPE STABILITY ANALYSIS
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
FIGURE 19
APPENDIX A
FIELD INVESTIGATION
The latest phase of the field investigation was performed during the period of November 4 through
December 1, 1999, and consisted of the excavation of 19 large-diameter borings, 11 small-diameter
borings, 17 "air-track" drill holes and 113 exploratory trenches. The approximate locations of borings
and trenches are shown on Figures 2 through 10.
The small-diameter borings were advanced to depths 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 were 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 2Vs-inch brass sampler rings to facilitate removal and laboratory testing. Standard
Penetration 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 diameter bucket auger. For
sampling, a split-tube sampler was driven 12 inches into the "undisturbed" soil mass with the drill rig
Kelly bar. The sampler was equipped with 1-inch-high by 2Vs-inch diameter brass sampler rings to
facilitate removal and laboratory testing. Bulk samples were also obtained.
An Ingersoll-Rand 500 pneumatic percussion, 4-inch-diameter drill with hydraulic pulldown was
used for air-track 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 the rate (in seconds per foot)
at which the drill penetrated each foot of depth examined.
The backhoe trenches were excavated to depths 3.5 to 18 feet using a ID 555 trackhoe-equipped with
a 24-inch-wide bucket. Disturbed bulk and chunk samples were obtained at selected locations in the
trenches.
The soils encountered hi the borings and backhoe trenches were visually examined, classified, and
logged. Logs of the borings and backhoe trenches are presented on Figures A-l through A-168. The
logs depict the soil and geologic conditions encountered and the depth at which samples were
obtained.
Project No. 06403-12-03 June 25, 2001
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
- 2 -_ _
- 4 -
- 6 -
- 8 -
_ _
- 10 -
- 12 -
—
- 14 -
_
- 16 -
- 18 -
- 20 -
—
-
-
- 24 -
- —
- 26 -
- 28 -
SAMPLE
NO.
LB1-1
LB1-2
LB1-3
LB1-4
LB1-5
CDO
o
I—H_1
X/*
:*&:iv •£
X*x'[*X'KK
•XiX***F • *t*x'3'y.vIlX*
'$:&'•
::[:|::
:[:
• '3''!•iPx't**»[» x'
v^X-
'3y'
vXyX'jvt
::tv£
•:[:&
$S»r» i* v
11
iH
HiP
%il^
Mr
Y/yyy/fr
m
t—
3Q
O
CO
SOIL
CLASS
ft \cf*G\(USCS)
SM
CH
f-»/-\-f-fcTT^.T/^1 T T> •<BORING LB 1
ELEV. (MSL.) 240 DATE COMPLETED 11/4/99
EQUIPMENT BUCKET AUGER
MATERIAL DESCRIPTION
FTT.T.
\ Loose, humid, dark brown, very Sandy CLAY /
SANTIAGO FORMATION
Medium dense, dry, dark yellowish-orange, Silty, fine
to coarse SANDSTONE, random, discontinuous,
caliche filled joints
-Fault: N55W, 54SW, .5" wide, caliche filled
-Possible "drag-structure", (bedding folded into
fault-plane suggesting reverse movement)
Bedding: N10E, 15E; siltstone 2" thick, abundant
caliche
-Undulatory contact
Stiff, dry, pale olive SILTSTONE interbed,
approximately 3' thick
-Pinkish-gray below 13 feet
-Bedding: N40W, 21NE (cross bedding?), lenticular
bed less than 1 ' thick
-Bedding: N70E, 14SE; well defined sandstone beds
i approximately 2" thick /
Hard, moist, pale olive CLAYSTONE,
bentonitic/"soapy" texture, random, discontinuous,
wavy, stained, closed fractures, massive
z^^Sy^
' — ^'i-
§10 en!""! n?5
I^S
~5/12"
—
-
_
-
-
-
—
~6/12"
-
-
_
-
-
"4/12"_
-
>
H1^
LL
|u
>fe
Q
124.8
-
112.2
^tv^
•^fez
^^ ^J
^E ^^^™ ^Do
10.8
20.2
Figure A-l, Log of Boring LB 1 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED) .
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE T. ... 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
CCCTFEET
3U
- 32 -
~
- 34 -
—
- 36 -
- 38 -
- 40 -
- 42 -
44
- 46 -
- 48 -
—
- 50 -
- 52 -
—
- 54 -
— —
- 56 -
- 58 -
SAMPLE
NO.
LB1-6
LB1-7
LB1-8
LB1-9
CDO
O
H_J
^mHHI1IIII
///y/
rr
yjjj,HwIi1I§
11111I1
11
A<>i
i11111
i
^H^
0o:CD
SOIL
CLASS
t\ ICPC N(USCS;
CH
ML
CL/CH
T>/~\T"fcTX.T/"'* T T» •<BORING LB 1
ELEV. (MSL.) 240 DATE COMPLETED 11/4/99
EQUIPMENT BUCKET AUGER
MATERIAL DESCRIPTION
Hard, moist to very moist, pale olive, CLAYSTONE,
massive, scattered, random, stained, discontinuous
joints, bentonitic
Bedding: N55W, 23NE; polished, undulatory, stained
texture, yellowish-orange
-Blocky, slickensided surfaces, random, stained joints
-Bedding: N73E, 35SE; slickensided, polished plane,
slickensides parallel to dip
-Very slight seep on north side of hole
Hard, damp, pale olive SILTSTONE, massive
-Bedding: N70W, 20NE, contact with sandstone
-Lenticular sandstone
-Bedding: N40W, 16SW, lower contact
Hard, moist, pale olive to light olive-gray, plastic
CLAYSTONE, massive, abundant, random,
discontinuous, polished, slickensided surfaces,
bentonitic/ "soapy" texture
ZLLJ~CD f ) •y z[~^™ ^p ™^
tijjjto
\il H ^^
Q.0^
~10/12"
-
-
12/10"—
—
-
—
-
-
"is/io"
~
-
>-^~ _.£H .££ji_i__Sj
Q »
>w
a
120.7
124.7
117.7
^III ^
fy*N^
^^
wg
||
O
14.6
12.1
17.5
Figure A-2, Log of Boring LB 1 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL
^ ... DISTURBED OR BAG SAMPLE
B ... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED}
B ... CHUNK SAMPLE T. ... 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
reel
- 62 -
- 64 -
- 66 -
- 68 -
- 70 -
- 72 -
- 74 -
—
- 76 -
- 78 -
- 80 -
-
- 82 -
- 84 -
- 86 -
- 88 -
SAMPLE
NO.
LBl-10"
LB1-11
CD
|
I—H_j
m
9,H
9/,n
jjj.
n
w
^HP:$?
•'M %
&&• •]* *•
>[:£
::c:l::t.•i-jv
:p|
II
II:'f-:t.*[•>>.•k-Kr*t* » r!••]•>
(j;
LU
<r
a
0fV
CD
SOIL
CLASS
(USCS)
CL/CH
SM
CL/ML
T*/^T*TT^.T^1 T T* •*BORING LB 1
ELEV. (MSL.) 240 DATE COMPLETED 11/4/99
EQUIPMENT BUCKET AUGER
MATERIAL DESCRIPTION
-Becomes grayish-green CLAYSTONE, massive
-Undulatory contact, generally horizontal
Very dense, dry, grayish-yellow, fine to medium,
Silly SANDSTONE, uccasiuiiidly well Uimeiiled
-Undulatory contact, generally horizontal
-Becomes light gray, fine, Silty SANDSTONE
Hard, moist to wet, light olive-gray,
SILTSTONE/CLAYSTONE
^UJ~
1 — 1 -y* 1 —
%&>
3> W i
0-°-^
20/10"
-
—
-
-
-
-
-
-
5-
*
SjjQ .
K~Q
118.0
^
Cf ^
wzI^UJo
u
15.7
Figure A-3, Log of Boring LB 1 LCG
SAMPLE SYMBOLS D ..'. SAMPLING UNSUCCESSFUL C ... 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 AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
m PROJECT NO. 06403-12-01
M
<M
*•
M
,.
M
•w
m
«
.M
,,-
.us**
««
<*
'«»
DEPTH
IN
FEET
yu
- 92 -
- 94 -
- 96 -
-
_ no _
-
- 100 -
SAMPLE
NO.
CD
LITHOLOm^HPWi.
ww//•V/>yyy>
^^HP
111
ill
ccLUt~GROUNDMA_
'
SOIL
CLASS
(USCS)
ML/CL
ML
CL
BORING LB 1
ELEV. (MSL.) 240 DATE COMPLETED 11/4/99
EQUIPMENT BUCKET AUGER
MATERIAL DESCRIPTION
Joints: N20E, 55W, N55E, 40NW; discontinuous,
undulatory
-Slight seepage at 92 feet
-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
Sui~ENETRATIC?ESISTANCBLOWS/FT.>•
|o
a
^.MOISTUREONTENT Qu
Figure A-4, Log of Boring LB 1 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE f. ... 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
CCCTFEET
_
- 2 -
-
- 4 -
— fi —D
- 8 -
- 10 -
- 12 -
- 14 -
- 16 -
- 18 -
- 20 -
- 22 -A*£*
- 24 -
- 26 -
- 28 -
— —
SAMPLE
NO.
,
LB2-1
LB2-2 jf
LLB2-3
LB2-4
^
CDo
o
H
-"
-/ -y
•/-
/•/
'/ Xyy-
y/s '
$%$/
m
ww$mim
•
wW$k
3:J3
•XvtJx>>>
N:::I-N
:||:|
• » * *L•>*« -t.•[•>>•r • 1* ^
i:i!
CE
Z
OFy
hJD
SOIL
CLASS
/t icnc ^(USCS;
CL
CL
CL
SM
T* /"\T"fc TM/^l T T* ^BORING LB 2
ELEV. (MSL.) 210 DATE COMPLETED 11/18/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, moist, dark gray-brown, Sandy CLAY
-Porous, with shrink crack 1/4 "-1" wide
_^ -Very irregular, transitional contact ^
SANTIAGO FORMATION
Very stiff, moist, light olive, Silty CLAYSTONE
-Very weathered and fractured
-Becomes harder
-Becomes hard to very hard, moist, light olive, Silty
CLAYSTONE
-
-Horizontal bedding contact
Dense to very dense, damp, light reddish-brown, very
Silty, coarse, SANDSTONE, with trace clay, massive
zu/>
tJ (\ *
H 2 r™"iHjS
J~T )— (^*
i?j"mQ_ "-^
_
~8/ll"
—
-
-
_
8/1 r
~™
-
—
>^"^^H ^
HoQ .
>°-
Q
127.2
121.0
/N
1 1 1 »\
fyi^^
«2
|— |}jj
^3 ^Z
*™ C3o
21.0
7.1
Figure A-5, Log of Boring LB 2 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL
H ... DISTURBED OR BAG SAMPLE
C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
B ... 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.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
- 30
-
- 32 -
- 34 -
-
- 36 -
~~ ~~
- 38 -
- 40 -
- 42 -
-
- 44 -
- 46 -
- 48 ~
- 50 ' -
- 52 -
54
SAMPLE
NO.
LB2-5
LB2-6
LB2-7
^LITHOLOGj^HiPn$/M
»
v$$y
wflwwjjw,
9
W9
IP
W
w
vysy/s
OLU
GROUNDUATSOIL
CLASS
(USCS)
CL
BORING LB 2
ELEV. (MSL.) 210 DATE COMPLETED 11/18/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
\ -Inclined depositions! contact (N50E, 20S), with fine 1
\ gravel layer at 30 feet /
Hard, moist, olive, Silty CLAYSTONE; fractured,
massive
-Fracture; discontinuous, hairline at N-S, 70E, with
jarosite lining and some gypsum, and normal
slickenside-striations
-Minor secondary fault
-Becomes harder, less fractured, with scattered
grit-size sand
BORING TERMINATED AT 54 FEET
-^ENETRATIOIRESISTANCEBLOWS/FT.Q_ "-v^
8
~
-
20/10"
-
^_
§
n
127.5
^^.MOISTUREONTENT <*:u
12.1
Figure A-6, Log of Boring LB 2 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL
® ... DISTURBED OR BAG SAMPLE
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 LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
CCCTFEET
-
- 2 -
-
- 4 -
-
- 6 -
- 8 -
- ~~
- 10 -
- 12 -
_
- 14 -
- 16 -
-
- 18 -
- 20 -
- 22 -
- 24 -
- 26 -
-
- 28 -
_
SAMPLE
NO.
LB3-1 |
J
LB3-2 1
LB3-3 !>*
LB3-4
LB3-5 E
CDo
o
I—
-1
" "/ "/
/'/*»r»^»*vv:j:';
:|:$j
# *]» »* f 1 *L*
* »1» *
If:£$:
»
vi$w
HH
'%%Y/y
«
9
WMHH
•
kv^vvyKKi
\jm
Wwjk
Wow
YA%W
WW/Syyj/%,
VM%>
x
LLl
Q
OQtCD
SOIL
CLASS
(USCS)
CL
SM
CL
"l^yVTlYT^.Ty'l T T"fc ^BORING LB 3
ELEV. (MSL.) 235 DATE COMPLETED 11/18/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
TOPSOIL
*\ ot.ij.1, muisL, uoTK gfa.y Drown, oouuy ^.LJ/\I /~
SANTIAGO FORMATION
Dense, damp, light brown to tan, Silty, fine
SANDSTONE, with trace clay
-
-6" claystone layer; horizontal
-Irregular, near-horizontal, depositional contact, (with
i fine gravel, coarse sand) /
Very stiff to hard, moist, light olive, Silty
CLAYSTONE
-Very fractured, weathered
-Bedding plane shear, horizontal, - 1/4-1/2" thick,
with gypsum liner, throughgoing, 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 fractured
-Remolded clay seam, N60W, 30NE; l/16"-l/8" thick,
throughgoing, plastic and wet; approximately 4"-6"
thick zone of very fractured wallrock on either side
-Joint/fault (?), N30W, 30NE; l/2"-l" thick,
throughgoing, with wet, plastic and jarosite/gypsum
°£P
P^t
oico"
ii H ^§ujffla. Q^\^
_
2
-
_
-
-
6
—
-
-
-
~
_
H-^
2ul
^ *
Q #
>-£
n
116.1
LjStt^
JjT2
J^j ^J
A« ^^u
17.4
Figure A-7, Log of Boring LB 3 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
... DISTURBED OR BAG SAMPLE ... CHUNK SAMPLE X ... 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
• 30
- 32 -
- -54. -
SAMPLE
NO.
LB3-6 1
LB3-7 I
>CDO
O
1—H
,
W'
til•*f****t*.%*5*.'.
QLjj
<C
=1
-)O
(^CD
SOIL
CLASS
(uses;
CL
SM
-
T*/-VT1TT^.T/-1 f T* ^>BORING LB 3
ELEV. (MSL.) 235 DATE COMPLETED 11/18/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
linings (orange to brown)
Hard, moist, olive to brown, Silty CLAYSTONE
-Fractured, massive
-Near-horizontal contact
Dense, damp, light brown to orange, Silty, fine
\ SANDSTONE /
BORING TERMINATED AT 35 FEET
gu~Hyi-t-|sll-<cE\£co<§k«°
Lu^m
Q_"--^
6
>-
lii° •
o:^Q
108.0
/v
^^otz?zEoo
21.9
Figure A-8, Log of Boring LB 3 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
ii ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE 1. ... 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
0
- 2 -
-
- 4 -
- 6 -
- 8 -
—
- 10 -
- 12 -
~ ~~
- 14 -
- 16 -
-
- 18 -
-
- 20 -
22
- 24 -
- 26 -
- 28 -
SAMPLE
NO.
LB4-1
LB4-2
LB4-3
LB4-4
CDo
o
1—H
'^/.
S~/'
•/ :/
tyl.
s//
?/-'/'://:
%/yyy
/yyy/VYY
fv//x.
/]/Vy/yyy
/Oyv
:\\-
• , "t |.
'•1 H
'J- ' "1!{-!-:-i-!-i-
e /.
'.' O .
-0 '
'/Mffls
wfflvM/xw
WOW,
Wfflfy,
Wm(/
YJ//SX/
ip
W
»
cejj
<r
-i
3
CD
SOIL
CLASS
(USCs)
CL
SC
CL/ML
SM
5M-GM
CL
T* f~\T\ Tn±.T/~* T T> ABORING LB 4
ELEV. (MSL.) 145 DATE COMPLETED 11/19/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
COLLUVTUM
Stiff, humid, dark gray-brown, Sandy CLAY
TERRACE DEPOSIT
Medium dense to dense, damp, light brown-olive,
with reddish-brown mottling, Clayey, fine SAND
Very stiff to medium dense, damp, light brown-olive,
very Silty CLAY to Clayey SILT, with some sand,
with white mottling of calcium sulfate (gypsum)
-Becomes more sandy
-Irregular bedding_ contact; N70E, 15N
Dense, damp, light brown-tan, Silty, fine SAND
-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
1 -Irregular deposition contact, near-horizontal; burrows /"
\ into unit below /
SANTIAGO FORMATION
Very stiff to hard, moist, olive, Silty CLAYSTONE
-Very fractured, with discontinuous clay seam,
calcium sulfate (gypsum) linings on fractures
-Becomes less fractured
BORING TERMINATED AT 30 FEET
2HJ.-S
t! z j —• ^n \ce^to
li^SUl^CQ
4
"
-
~
—
~8/10"-
-
-
-
~~
—
_
5
- '
>•
M .
U-uijj
^^ •
ofa
124.4
122.1
120.2
^
rv^~^
fez-
Hi—z:gu
8.9
9.8
-
14.5
Figure A-9, Log of Boring LB 4 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR. BAG SAMPLE B ... CHUNK SAMPLE T. ... 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
rcCTFEET
_
.
- 4 -
- 6 -
-
- 8 -
-
- 10 -
- 12 -
- 14 -
- 16 -
- 18 -
- 20 -
-
- 22 -
-
1 A24
—
- 26 -
- 28 -
-
SAMPLE
NO.
LB5-1 I
LB5-2 1
LB5-3 In
y
LB5-4 I
LB5-5 i
CD3o
i—H
1 "* "I'•'.{•'
• "11 1 '•C'-v:-:j::-
XiX*
M
$:[:
p|
•$:f:
:f:j:¥
£j$M:|::[:
$!:$X'kf*.vJv.k, » I* *::t:::f
II
fl
::t:3*>
:£i::fX »"t
*'S X
_•_.•-
• •/••'•
yy/Mv«yW/vM
K£§
i
3
LD
SOIL
CLASS
(USCS)
SM
SM
ML
CL
~T% /"\Tfc T%.T/™1 T T* S*BOREVG LB 5
ELEV. (MSL.) 165 DATE COMPLETED 11/19/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
TOPSOIL
Loose, dry, dark gray, Silty, fine SAND
\ -rorous f
SANTIAGO FORMATION
Dense, humid, light tan, Silty, fine SANDSTONE
-Becomes medium to coarse-grained
-Cross-bedding inclined 15-20 degrees northward
-Horizontal bedding
Dense, damp, light reddish-brown, Silty, coarse
SANDSTONE
-Becomes gravelly and very moist
, -Irregular, interfingering contact, approximately
^ horizontal '
Hard, moist, blue-gray to olive, Sandy SILTSTONE,
with some clay
-Interfingering, transitional contact; approximately
v horizontal '
Hard, moist, dark olive, Silty CLAYSTONE
-Very fractured, with discontinuous clay seams
guj^
H^K
<T* ^™ \Q^ J^T ^Q
zlo°
Q_°Z^>
"8/11"
-
—
-
-
-
-
—
-
10
—
-
>
H~tf\8S° •
a:^Q
125.8
117.2
^u5
«z
n*~Eou
1L9
16.7
- Figure A-10, Log of Boring LB 5 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL E... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
... DISTURBED OR BAG SAMPLE ... CHUNK SAMPLE T. ... 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
- 30
- 32 -
- 34 -
SAMPLE
NO.THOL06YH
I
cn
3
— )
KCD
SOIL
CLASS
(USC5)
CL
T"»y-"VTfcTTWTX"<1 T T» fBORING LB 5
ELEV. (MSL.) 165 DATE COMPLETED 11/19/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
-Scattered subangular volcanic clasts
BORING TERMINATED AT 35 FEET "RATIONSTANCEIS/FT.)^~i_j-*wS°g£mQ."^lENSITYC.F.)" .
>£QiQ
^NuS
1-cnSHy
§2*-ou
- Figure A-ll, Log of Boring LB 5 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST I... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE Ekl ... CHUNK SAMPLE ^L ... 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
reel
- 4 -
- 6 -
-' 8 -
- 10 -
~ 12 H
- 14 -
- 16 -
—
- 18 —
-
- 20 -
- 22 -
_.
- 24 -
- 26 -
-
- 28 -
5
C
SAMPLE c
NO. f
%
• ':'
;'
.-/.
tLB6-i jjhr.j;-;
/
LB6-2 •:•[
M**P
/,
•'.'
,' f
U4LB6-3 • -j.
LB6-4 | 'j8; 1
.-1-
1
-"i
T
;-i.
."
LB6-5 •-••
LB6-6 |.rt:.i
ce
D h-D ^J 2D 3
H Oj o:CD
f
'. • ,
;-'•
;'
•/
' . (
/'1'.
'.• «
-i
3:]*.[.iX-
]?•
:;;
t'<\
r
j'1 •
•L•T. .
t
i"-"
•|. .
l-|.
. 1-1 .i...
-ij.--•1.i...
SOIL
CLASS
sc
ML
SM
ML
SM
T-fc^-VT-&TT^T/-«1 ••• T» SBORING LB 6
ELEV. (MSL.) 260 DATE COMPLETED H/19/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
TOPSOIL
Loose, dry, dark gray-brown, very Clayey, Gravelly
•\ oAJNiJ, witn angular volcanic clasts /•
SANTIAGO FORMATION
Medium dense, damp, light brown, Clayey, Sandy
SILTSTONE
-Highly weathered
-Horizontal beds
Dense, damp, reddish-brown, Silty, medium
SANDSTONE, with some clay
Very stiff, moist, light olive, Clayey SILTSTONE
, -Gypsum
* -Horizontal contact '
Dense, damp, reddish-brown, Silty, fine SAND, with
some clay
-12" cemented fossiliferous layer
-Bedding plane shear at 19.5 feet, l/8"-l/4" thick,
horizontal, discontinuous
-Clay seam (not remolded) N-S, 5W approximately
1-2" thick, very moist, bentonitic?
-Becomes light olive to brown
^™ ^U ^^
H^^1"* ^n v
S^co
p"T ^ ;•£
Lu^mQ_Q-^S
6
-
—
-
-
5/9"
-
-
-
_ .
—
11"
>
^"^^
fft •
^*|^
go
o;^Q
120.0
122.1
^
Lil0£V*'"i
w2
H
°z
CJ
12.1
13.1
Figure A-12, Log of Boring LB 6 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST
... DISTURBED OR BAG SAMPLE ... 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
FceT
- 30
- 32 -
- 36 -
- 38 -
- 40 -
SAMPLE
NO.
LB6-7
LB6-8 THOLOGYH
.-I.,-'-
S / '
t /
Hm:•£•!•»:.VJV,•vKr.•xjx-* f T *L*•>• «t-,'C-Jv..vKr.•£iH%r.vi*.r.vt*.:.i.'.
-
cc
UNDWATEoceCO
SOIL
CLASS
CUSCS)
ML
CL
SM-ML
BORING LB 6
ELEV. (MSL.) 260 DATE COMPLETED 11/19/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
Dense, moist, light olive, Clayey SILTSTONE
Hard, moist, olive to gray, Sandy CLAYSTONE, with
some silt
Dense, moist, light olive-brown, very Silty, fine
SANDSTONE to Sandy SILTSTONE
BORING TERMINATED AT 41 FEET "RATIONSTANCEIS/FT.)LUftoZ?3_lLU^COQ_ B-^x
20
Eh
=±s«° .
^Q
<"Vui5'o:=HcnSl_jUJ
°^=iu
Figure A-13, Log of Boring LB 6 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
® ... DISTURBED OR BAG SAMPLE HI ... CHUNK SAMPLE T. ... 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
- 2 -
- 4 -
- 6 -
- 8 -
- 10 -
- 12 -
—
- 14 -
- —
- 16 -
- 18 -
_
- 20 -
- 22 -
"* ^
- 24 -
- 26 -
- 28 -
SAMPLE
NO.
LB7-1
LB7-2
LB7-3
LB7-4
LB7-5
>-CDO
O
(—H
«J
^// /%r»^»%*'VJM'.v-v.
*£v[*IvKrl•Ilv.r.
'PfH'l'ifiijii**c **^** - r -V *l '
||i
IP
H
Or%jjjj&
w/y/y'%%%/
$/%w''jm
W/X/7
mjjj.
WJj,
m
Q,
ILl
c
a
o
CD
SOIL
CLASS
/I ICf*O\CUSCS)
SM
CL-ML
CL
T» /"VT» TVT/"*1 T T> ^TBORING LB 7
ELEV. (MSL.) 220 DATE COMPLETED 11/22/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
TOPSOIL
_ ^fify" "hiimiH fl^rV Hrnu/n vf*rv ^unriv (^T AV r~^\ kjLii.^j IXLLLJIXIU, UdlA. Ulv/Wllf VwiV O£UiUy *-j)L^t\ 1 /^
SANTIAGO FORMATION
Dense, damp, light reddish-brown, Silty
SANDSTONE, with some clay, weathered
-Becomes dark red-brown
-1 " thick clay seam (not remolded), N-S, 5W
XT t. ' + 1 J **'-jNear-nonzontai deposition-contact
Hard, moist, light olive, very Silty CLAYSTONE to
Clayey SILTSTONE
-Becomes sandy
-Joint, fracture, with 1/4" thick clay seam, N30E,
30NW
-Discontinuous clay seams, E-W, 30S (very fractured
claystone with sand)
Hard, moist, medium olive-gray, Silty CLAYSTONE,
with discontinuous slickensided fractures, typically
random and steep
z /->o W •
<r^\
UjS°,
ugm
4
_
-
—
—
3
-
_
-
—
6
"
-
^_i—^!"-•
DQ*
tt^o
117.8
115.3
^LU-5o:
$£•HH
=oCJ
7.6
15.7
Figure A-14, Log of Boring LB 7 ICG
SAMPLE SYMBOLS D .... SAMPLING UNSUCCESSFUL
il ... DISTURBED OR BAG SAMPLE
C ... STANDARD PENETRATION TEST
B ... CHUNK SAMPLE
... DRIVE SAMPLE (UNDISTURBED)
... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
- 30
- 32 -
- 34 -
—
- 36 -
- 38 -
- 40 -
—
- 42 -
- 44 -_
- 46 -
- 48 -
- 50. -
-
- 52 -
—
- 54 -
- 56 -
58
SAMPLE
NO.
LB7-6
LB7-7
LB7-8
LB7-9
.67-10
J37-11
^7-12
CDO
O
K-
nil•. •' • • .
-. • . * ••.r.i.'L
j:[:fy
::f:j::tin
il
» #1* #
%N.# >* r 4 *\r #J» V
»r* * fw$yvfymm
•m$£
::[:£
$&
HlfM
(X.LU\—yj"
Q
O
CD
SOIL
CLASS
CUSL.S;
ML
SM
CL
SM
CL
T* /""kTfcTT^T/"'* T T» FTBORING LB 7
ELEV. (MSL.) 220 DATE COMPLETED 11/22/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
Dense, damp, light olive, Sandy SILTSTONE, trace
clay
-Contact N8UE, luS
Dense, damp, light tan, Silty, fine SANDSTONE
~
-Becomes reddish-brown (layers)
-Bedding plane shear, N70E, 5S; l/8"-l"
i throughgjoing, slickensided, wet /
Hard, moist, light olive-brown, Sandy CLAYSTONE
_
Dense, damp, light brown-tan, very Silty, fine
SANDSTONE, massive
-6" cemented layer; lenticular
Hard, moist, olive, Silty, Sandy CLAYSTONE
ZLU~\\ CJ *
^p ^^ \Q^ f~t\ CO
UJHO
S^m
Q^ ^™ ^^
15
-
—
-
_
9
_
-
-
-
-
—
"
"20/7"
-
40/9"
>
j"^^
Sli° •a^a
114.6
121.3
<^.
\i\ ^
W!MH£ot
o
18.6
14.2
"" Figure A-15, Log of Boring LB 7 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST
... DISTURBED OR BAG SAMPLE ... 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
- 60
-
SAMPLE
NO.
JB7-13 |
t THOL06YH
HH
<£UNDWATEo0£CD
SOIL
CUSS
(USCS)
Tfc y"VT"fc TM/""1 V T* nBORING LB 7
ELEV. (MSL.) 220 DATE COMPLETED 11/22/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
BORING TERMINATED AT 61 FEET "RATIONSTANCEIS/FT.)r— uj -*LUHOZm-JLUStDQ."-^-'lENSITYC.F.)" .
-,.0.ce^Q
wSo:
= Hin^i
H^ot
= 0u
Figure A-16, Log of Boring LB 7 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL
il ... DISTURBED OR BAG SAMPLE
C... STANDARD PENETRATION TEST •,.. DRIVE SAMPLE (UNDISTURBED)
El ... CHUNK SAMPLE f. ... 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
- 4 -
- 6 -
o
- 10 -
- 12 -
- 16 -
- 18 -
- 20 -
- 22 -
- 24 -
- 26 -
SAMPLE
NO.
CDO
O
1—H
%?
/X"x
-:1-)'!1'
I1!-- r-•I -1-1.1.•i{i.-1- 1 -i-/• /'/
'•s/
ss/
%•Bit'w?
fa/^ s /
o/ y
</o// ?*/,'7
/O /i
A/
SO/
V ^~
**i hi.
^i h i*
K
LU
1—fT
Tn
— »0rv
CD
T•=•
SOIL
CLASS
cuscs;
SC-CL
SM
SC
CL
GC
BORING LB 8
ELEV. (MSL.) 180 DATE COMPLETED 11/22/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
LANDSLIDE DEBRIS
Stiff, humid, dark brown, very Clayey SAND
Medium dense, damp, light brown, Silty, fine to
medium SAND, with some clay
-
Medium dense, moist, olive-brown, Clayey, fine
SAND
Medium dense, moist, light olive to red-brown, Sandy
CLAY, with scattered, subrounded to angular volcanic
gravel, (brecciated Santiago formation claystone)
\ -Remolded clay seam-contact at 19.2 feet at N70E, f
, 12S, 1/4-1X2", wet, plastic and throughgoing /
Medium dense, moist to very moist, reddish -brown,
very Clayey, coarse GRAVEL, with angular to
subrounded volcanic clasts; disturbed, non-imbricated
texture (debris-flow?)
•\ -otrong seepage at 25 teet /•
SANTIAGO PEAK VOLCANICS
Very weathered, fractured, light olive to
^ reddish-brown, weak VOLCANIC ROCK, with r
\ oversize floater boulders /
BORING TERMINATED AT 27 FEET
REFUSAL
ZLU~tJ (\ •— z^~— fT ^~
Sjjjtn
m co i
U^CQ
_
-
-
-
—
-
-
>-
^"^^H ^
UJi,Sj
^^ •
Q.
Q
^
IL!fy« ****
3.
H^
ML^
O
O
Figure A-17, Log of Boring LB 8 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ...STANDARD PENETRATION TEST
... DISTURBED OR BAG SAMPLE EJ . . . 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
_
- 2 -
-
- 4 -
- 6 -
- 8 -
- 10 -
- 12 -
- 14 -
- 16 -
- 18 -
- 20 -
- 22 -
- 24 -
- 26 -
-
- 28 -
SAMPLE
NO.
I
LB9-1 I
LB9-2 £
2
LB9-3 1
LB9-4 I
r
CDO
O
H
&'/:/.
•J1/
''jfS/
- /'JP
W's
'fy
¥:P:/
'$*
', -/Q/f •
/ir ~jt
&ycy
v/\v//rf/Wi/VyY
yyyy4/1/yy/y]/y
/W'/yy/yyy/vyy/yyy/yyyW/w//\/\/\/
Wy
W//m
%$/
%fy
^ty/
%,
QLJj
<T
Z
O
CD
SOIL
CLASS
(USCS)
SC-CL
GC
CL
CL-SC
GC-SC
T>/^VT*TTVT/^t T T» f\BORING LB 9
ELEV. (MSL.) 140 DATE COMPLETED 11/23/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
FILL
Loose, dry to humid, medium olive-brown, very
Gravelly, Clayey SAND
-Scattered 12" boulders, weeds
Loose, moist, reddish-brown, very Gravelly CLAY
Soft, moist, light to medium olive, Silty CLAY
-Strong organic odor
Soft, moist, dark brown-olive, Gravelly, Sandy CLAY
-Very strong organic odor
Loose, dry to humid, light reddish-brown, very
Gravelly, Clayey SAND, with rock > 10"
ZLU/->
\*m/ ^* •
M 2 |
G* t^ \Qi r#» ^^
uJHoSuffl0- ^
1
"
PUSH
-
-"
-
_.
-
-
-
>•
^"/^«» ,gu.
HJoa •
0£~a
117.7
115.1
/•v
III ^
tt"**1
Is
EoO
12.9
16.8
Figure A-18, Log of Boring LB 9 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST
H ... 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 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
- 30
- 32 -
- 34 -
~ —
- 38 -
—
- 40 -
SAMPLE
NO.
1
^LITHOLOC%/p%.••
Pm^LB9-4 B^iWm
LB9-5 llli
LB9-6 \\vvw,
xl
GROUNDMA1SOIL
CLASS
(USCS)
GC-SC
SC
BORING LB 9
ELEV. (MSL.) 140 DATE COMPLETED 11/23/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
Loose, dry to humid, light reddish-brown, very
Gravelly, Clayey SAND
SANTIAGO FORMATION
Hard, moist, light olive to gray, Sandy CLAYSTONE,
massive
BORING TERMINATED AT 41 FEET
^ •—•ENETRATIORESISTANCEBLOWS/FT.Q. ^
7
-
12_
j_
|u
Q
110.1 MOISTUREONTENT C*O
19.8
Figure A-19, Log of Boring LB 9 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL
H ... DISTURBED OR BAG SAMPLE
C ... STANDARD PENETRATION TEST I... DRIVE SAMPLE (UNDISTURBED)
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
- 30
- 32 -
—
- 34 -
- 36 -
- 38 -
- 40 -
- 42 -
- 44 -
_
- 46 -
- 48 -
—
- 50 -
SAMPLE
NO.
JB10-6
_B10-7
JB10-8
JB10-9
._LITHOLOG* r * *[•»I»J» r
:ji:[:
?•$:* •*£ •
$8:* f 1 *l*
»>•»[«
» » j* »
IIli
%[*%V* r r *[»*r*j* *
|]:|
'•t^'f*fc* ]***
:|i;:|:
|l|
*r*** v
*IH I*t
:i[|t
LU
GROUNDWA1SOIL
CLASS
(USCS)
SM
BORING LB 10
ELEV. (MSL.) 290 DATE COMPLETED 11/23/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
-Clay seam 1/8' thick, horizontal; not remolded
Dense, moist, light reddish-brown, Silty, fine
SANDSTONE, massive
-Joint; N30E, 65SE, with black, manganese oxide
coating
-Becomes light brown to tan, Silty, very fine
SANDSTONE
-Becomes light olive-brown
-
BORING TERMINATED AT 51.5 FEET
z /-*ENETRATIOlJESISTANCEBLOWS/FT.Q. "-•—•
~14/8"
-
_
_
14/9""
-
—
-
-
j.i— ^
Q
..MOISTUREONTENT (XCJ
Figure A-21, Log of Boring LB 10 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
§1 ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE T. ... 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
_
- 4 -
- 6 -
- 8 -
- 10 -
- 12 -
_ i/t —If
- 16 -
- 18 -
- 20 -
- 22 -
-
- 24 -
—
- 26 -
- 28 -
SAMPLE
NO.
1
._LITHOLOG/' '/'./
^•y/
s'S/
I'C'MHw\MMX'KK
LB10-1 I'.r'iiv
LB10-2 I'xfci
Bs» > i -•">ri.*. •]•.».
II
:¥&:»* 3*» •
*lf« • f*
m\\m
IB 10-3 llftX
1 I*f .'•[
:!-:[
l|
l|
:|gr
x-]->
•Irlil%UH->>.B10-4 MW:<
LB10-5
J*?.1.'l
M::[:i::
M:%i
g
GROUNDNAlSOIL .
CLASS
(USCS)
SC-CL
SM
BORING LB 10
ELEV. (MSL.) 290 DATE COMPLETED 11/23/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
TOPSOIL
Loose, dry to humid, dark gray-brown, very Clayey,
_ •£?•«& C A \TT"\\ line oANL) f
SANTIAGO FORMATION
Dense, damp, light olive to tan, Silty, fine
SANDSTONE, with some clay, upper 2 feet
-Becomes massive
-Becomes light red-brown
-
-
Z f-*ENETRATIOIRESISTANCEBLOWS/FT.Q.**-S^
8
8/10"-
-
-
-
_
-
-
~6/9"
_
^.
tj~
^^ *
o:w
Q
117.6
115.7
_MOISTUREONTENT ay.u
9.3
12.3
Figure A-20, Log of Boring LB 10 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL
H ... DISTURBED OR BAG SAMPLE
C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
El ... CHUNK SAMPLE T. ... 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
_ __
- 4 -
- 6 -
- 8 -
- 10 -
-
- 12 -
~ 14 ~
- 16 -
_ _
- 18 -
- 20 -
- 22 -
- _
- 24 -
—
- 26 -
- 28 -
SAMPLE
NO.
jm-i
LBll-2
-Bll-3
-Bll-4
JB11-5
>•CDO
O
H_1
V- '/-/
*•'/'/•
Y/'.
$&$%%,
WJjtt,
mfijjk
Wwjj.
»
y/ffyfc,
•£j$
x?|&|:
'•t- * ?'
'::[:-:¥
||
|lX'Kr*[* * ry.i.%
•l^f
•:[:vl*»Sj-v
•I^H
tJ:];^
i:|:j:j
^'yV
Q,;Jj
c
Q
0ceCD
SOIL
CLASS
(USCS)
sc
CL-CH
SM
ir» X^T^TTk. T^"t T T^ •< •*BORING LB 11
ELEV. (MSL.) 206 DATE COMPLETED 11/24/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
TOPSODL
Loose, dry, dark brown, very Clayey, fine SAND
SANTIAGO FORMATION
Stiff, moist, olive to brown, Silty CLAYSTONE
-Very weathered 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)
-Horizontal deposition-contact
Dense, damp, reddish-brown, Silty, medium
SANDSTONE, with some clay
-8" fossil shell layer
•
-1/2" horizontal clay seam; not remolded
"Z. r*.°o *rH ^y |~
^S«
li Ho
uJ^mQ.°-\^
~ 1/6"
-
-
-
-
4
-
~
-
_
—
-
8_
>_i— ^
fn •
|o
>w
Q
102.9
119.0
^LU-5
Is^D C!
A~ Qu
20.2
10.0
Figure A-22, Log of Boring LB 11 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
... DISTURBED OR BAG SAMPLE i] ... 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.
»» PROJECT NO. 06403-12-01
DEPTH
IN
FEET
- 30
- 32 -
-
- 34 -
- 36 -
- 38 -
-
- 40 -
42
- 44 -
-
SAMPLE
NO.
JB11-6 I
CDO
d
5
/* *_/* y+ t+ j'j' *
M's\
*\£$*
$%$jjjjl
jm'{jM
•ifif
'.f.j.%
IvHr
rru
<Ei
fV
CD
SOIL
CLASS
(USCS)
SC-CL
CL-CH
SM
BORING LB 11
ELEV. (MSL.) 206 DATE COMPLETED 11/24/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
Hard/dense, moist, reddish-brown, Clayey
SANDSTONE, and Sandy CLAYSTONE
-Alternating beds
-Horizontal bedding
Hard, very moist, olive, Silty CLAYSTONE
-Fractured, with gypsum-linings
-Remolded clay seams N-S, 40E; discontinuous, 1-2"
zone
Dense, damp, light brown-olive, Silty, fine
SANDSTONE
BORING TERMINATED AT 45 FEET
o^^H^I-:I-?U_<E£\£w"
u3m5ja. "-^
10
-
>f;° •
ce^a
112.7
^
^z:§u
18.4
Figure A-23, Log of Boring LB 11 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
... DISTURBED OR BAG SAMPLE ... CHUNK SAMPLE 3E ... 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
- 4 -
_ —
- 6 -
- 8 -
- 10 -
- 12 -
-
- 14 -
_
- 16 -
-
- 18 -
- 20 -
-
- 22 -
- 24 -
- 26 -
—
- 28 -
SAMPLE
NO.
|
J312-1 I
LJB12-2 18J312-3 &
J312-4
JB12-5 |
CDo3o
1—
H
^/:,/-/
*$.]$•fax'
$:]$
•-K-:
P:[:
If!
'•[••t• V 4 •!•'.M.'k*
ivl'ri
'::!:-•
X'Kr
ivt-itJ-XiX:r:t
iPf
w
WMWkjjmmw^'iim
m
iriJ
<r
z
g
CD
SOIL
CLASS
(USCS)
CL
SM
5M-ML
SM
CL-SC
CL
BORING LB 12
ELEV. (MSL.) 215 DATE COMPLETED H/24/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
TOPSOBL
Stiff, humid to dry, dark gray-brown, Sandy CLAY
SANTIAGO FORMATION
Dense, damp, light brown to tan, Silty, fine
SANDSTONE, with coarse lenses, massive
Dense, damp, light olive, very Silty, very fine
SANDSTONE to Sandy SILTSTONE
Dense, damp to moist, light brown, Silty, medium
SANDSTONE
-N-S, 10E, very irregular deposition contact
Hard, moist, olive to brown, Silty, Sandy
CLAYSTONE, with irregular l"-2" lenses of
sandstone, with scattered gravel
Hard, moist, olive, Silty CLAYSTONE; fractured,
massive
-Joint with 1/4", jarosite-stained clay lining N80E,
30S
gtu^
5?r-
IfcS
^30.0:^
6
-
—
-
-
„
4-
-
-
-
"""
3
-
—
-
s *gj
Q •
a:*"a
122.9
108.0
/->
LlJQL^
&
o*-
^-ou
11.7
20.6
Figure A-24, Log of Boring LB 12 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST
H ... 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 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
- 30
-
- 32 -_
- 34 -
- 36 -
- 38 -
- 40 -
SAMPLE
NO.
LB12-6 THOLOGYH_j
»
Wf.- • • '. •.'.-."
- • - : •
••.-..•
• •••:•
••;.'.
cc
LJNDWATEo(^
CD
T
=
SOIL
CLASS
(USCS)
ML
BORING LB 12
ELEV. (MSL.) 215 DATE COMPLETED 11/24/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
-Slight seepage along fracture
-12" horizontal deposition contact
Very hard, damp, gray-olive, Sandy SILTSTONE,
with some clay
-Massive, no fractures, difficult drilling
-
BORING TERMINATED AT 41 FEET "RATIONSTANCEIS/FT.)r— Lj-i
S^m
^^ ^^ ^^
~14/7"
-
fc
"^ •
^ ^^o;~Q
pBi-
CO ^
= 0(J
Figure A-25, Log of Boring LB 12 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE it] ... CHUNK SAMPLE JL ... 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
- 2 -
- 4 -
- 6 -
- 8 -
- 10 -
—
- 12 -
- 14 -
- 16 -
-
- 20 -
_
- 22 -
- 24 -
— —
- 26
-
- 28
SAMPLE
NO.
j
'yB13-1 In
JB13-2 I
JB13-3 |iOB
JB13-4 1r
>
3o
H_1
^/'/•/
*,r.V]:-t-M.VI'.!•:*:•!v.v1
H-K1
•%*•*»•>:i:-:f.vi$;*v***. .* *
<v ;' , /
''.•/'/ '.
' / >f,
fti
II
H'K
:i-i
ft
::[:3::
:¥•
-:[:•:'
f>tvj:[::
1
ceu
5E
ZJD
D
/
/
/
•
,
/
'
•
' •
'
'
'
[:
f:
^
1
1
SOIL
CUSS
/I ICPC\(USuS)
CL-SC
SM
vIL-SM
SM
Tfc /^Tfc TTWT/^ T T» •* ***BORING LB 13
ELEV. (MSL.) 190 DATE COMPLETED 11/29/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
TOPSOEL
Stiff, moist, dark brown to reddish-brown, very
Sandy CLAY
SANTIAGO FORMATION
Dense, damp, light brown, Silty, fine SANDSTONE
•p.,,. , . .-JbJedding horizontal
Hard, moist, light olive to brown, very Clayey
SILTSTONE, with interbedded thin SANDSTONE
beds
-Bedding N20W, 8SW
Dense, damp, reddish-brown, Silty, fine
SANDSTONE, with some clay
-Cemented sandstone layer — 8" thick (fossiliferous)
Dense, damp to moist, red-brown to olive, Silty, fine
SANDSTONE, with interbedded claystone
-4-5" clay stone .layer (no remolding)
2 yj^
H ^h™!s§
UJ ^*O
ul^iaQ_ ^
7
—
-
-
3—
-
-
_
-
~
4
-
-
-
>H":
|u™™ •
a:"-'Q
116.4
112.3
118.5
^
gS
&2HJi;
= 0a
10.6
18.9
16.1
Figure A-26, Log of Boring LB 13 LCC
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL
S ... DISTURBED OR BAG SAMPLE
C ... STANDARD PENETRATION TEST I ... DRIVE SAMPLE (UNDISTURBED)
B ... CHUNK SAMPLE 3C ... 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
- 30 -
- 32 -
- 34 -
- 36 -
- 38 -
- 40 -
- 42 -
-
- 44 -
- 46 ~
- 48 -
- 50 -
-
- 52 -
54
- 56
- 58
SAMPLE
NO.
yB13-5 1
B13-6 I
JB13-7 11
.
JB13-8 1
JB13-9
CD
_lo
t—f_4I
*L*»*tf*C'KV
?!$'
' * 1 *
r L
ftw$
'%%%>
m
Hm
'•'•':'.••••:.
0-:
/'''
m
'/MX/,
$'
:£fi4\Y,:--K.vK
:i|:
>ty!
'M'
ft.
u
i
QfV
CD
v
T
SOIL
CLASS
;uscs)
CL
ML
CL
SP
SM
ML
BORING LB 13
ELEV. (MSL.) 190 DATE COMPLETED 11/29/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
-4-6" thick cemented sandstone layer
-Slight seepage (perched)
Hard, very moist, olive to brown, Silty CLAYSTONE
-Fractured, caving, with water along fractures
-Slight seepage
Very hard, moist, olive-gray, Clayey SILTSTONE
-Slight to moderately cemented in upper portion
Hard, moist, dark olive, Silty CLAYSTONE.
Dense, very moist, light olive to brown, medium to
coarse SANDSTONE
Very dense, damp, medium olive-gray, Silty, very
fine SANDSTONE, with trace clay
BORING TERMINATED AT 60 FEET
Hard, moist, dark olive, Clayey SILTSTONE
ofcp1 1 2**™r1 • ^pLL
oifec/i
^™ |j —^^ coR
Q.Qiw
9
—
-
"12/9""
-
-
-
_
-
"20/10"
-
£^
r"l ,
^j|l
StJL_I
ft
o:^Q
115.4
»^\
Ltl£o:v
K*
ot*&u
15.3
v
Figure A-27, Log of Boring LB 13 LCI
SAMPLE SYMBOLS D ... SAMPLIMG UNSUCCESSFUL E ... STANDARD PENETRATION TEST
... DISTURBED OR BAG SAMPLE ... CHUNK SAMPLE
... DRIVE SAMPLE (UNDISTURBED)
... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
- 2 -
_ —
- 4 -
6 ~~
-
- 8 -
- 10 -
- 12 -
- 14 -
-
- 16 -
- 18 -
_ _
- 20 -
-
- 22 -
- 24 -
-
- 26 -
- 28 -
SAMPLE
NO.
-B14-1
1,814-2
>•CDO
O
1—H
^ /^Xf'/. /
•'f'vt-
:-t'-:f:•XO[-.vK'.
Ill• /. -1
. % .
II•vKrX>\r• j*»*
|||
H|:[
'M
:¥&'flfflfy
W$y%>
HH
«
w
11
1
3a
ofy
CD
SOIL
CLASS
CUSCS)
cp
SM
ML
SM
CL
BORING LB 14
ELEV. (MSL.) 195 DATE COMPLETED 11/29/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
TOPSOIL
Loose, dry, dark gray-brown, Clayey, fine SAND /
SANTIAGO FORMATION
Dense, damp, light brown to tan, Silty, fine .to
medium SANDSTONE
-
Dense, damp, light olive, Sandy SILTSTONE, with
trace clay
Very dense, damp, light brown-tan, Silty, fine to
medium SANDSTONE
-Becomes moist
-Very irregular scour-contact into weathered T
\ claystone (to a clay seam), N70E, 10S, wet, plastic, /1 1/2-1" thick '
Hard, moist, light olive, very Silty CLAYSTONE,
with some sand interbedded throughout
-Discontinuous clay seams (slickensided fractures and
varying dips in 6" zone)
z /•»>ot, •
p^t
^C L^ \Q£ tt\ Cfl
mtn°
S^JQ
QL.0^^
-
—
"8/10"
-
-
-
-_
8
-
-
-
-
-
>.
H~.
Ijj
Q •
0*^Q
124.2
^
£^
fez
Q>-
EOO
14.0
Figure A-28, Log of Boring LB 14 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... 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 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
- 30
- 32 -
- 34 -
- 36 -
- 38 -
- 40 -
42 H
SAMPLE
NO.
JB14-3 I
P
LJB14-4 1
-B14-5 1
CD3S
H_1
t j
'/ '
<' //tifwk
»Pill
reu
<E
Z
Q
•3
SOIL
CLASS
CUSCS)
ML
CL
BORING LB 14
ELEV. (MSL.) 195 DATE COMPLETED 11/29/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
Very dense, moist, gray-olive, Clayey SILTSTONE;
with some very fine sand
-Horizontal bedding
Very hard, moist, dark olive-brown, Silty
CLAYSTONE, massive
BORING TERMINATED AT 42 FEET
o11^
°^ti*£co§
§2^
Q_ B='W
15/8"
15/8"
>-
iii^ .
ofQ
^
o:^
w ^
g|
u
Figure A-29, Log of Boring LB 14 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE i] ... CHUNK SAMPLE T. ... 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
- 2 -
- 4 -
- 6 -
- 8 -_
- in —IU
- 12 -
_
- 14 -
- 16 -
- 18 -
- 20 -
"
- 22 -
-
- 24 -
- 26 -
- 28 -
-
SAMPLE
NO.
L
.B15-1 I
I_B15-2 I
S>X
L_B15-3
1
>"
0
o
H
tft.A
-/ //~y/'/ys
^ft
~'fi-
r//S//^j
Hm
W
www1
*m&%4
f/jffY/jfj
W/MV,
Y$$//
y$%%>
Y/$M
^HP
Y$XW
WWWw%wmkw$y
y$$w
mjj,wit
9YKW%>
|i|
•*f • 't::c:i::r
o;uz
•3.
z
^3
SOIL
CLASS
(USuS)
sc
CL
CL
SM
T^/^T^ TTVT/^< T T* -^ fBORING LB 15
ELEV. (MSL.) 250 DATE COMPLETED 11/30/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
LANDSLIDE DEBRIS
Loose, humid, dark brown, very Clayey, fine SAND
-Becomes medium dense, damp, light olive, very
Clayey, fine to coarse SAND
-Highly weathered and fractured
-Clay seam, l/8"-l/4"; N65E, 25N, joint, with
\ calcium sulfate lining '
Stiff, moist, olive, very Sandy CLAYSTONE, with
some silt, very fractured, weathered
-Fracture and clay seam; l/8"-l/4"; N60E, 8-10SE,
wet, plastic and slickensided, throughgoing, with
< calcium suitate lining r
-Remolded clay seam; l/4"-l/2", N50W, 15-20NE;
wet, plastic and throughgoing, with orange iron oxide 1
staining-base of slide j
SANTIAGO FORMATION
Hard, moist, olive, Silty CLAYSTONE; fractured, but
massive and intact
-Becomes medium olive
-Massive, moderate fracturing
-Discontinuous clay seams; zone — 12" thick at N40W,
30-40NE
-Becomes very hard, massive, with few fractures
-Horizontal transition to siltstone and sandstone
Dense, damp, light brown to tan, Silty, fine
SANDSTONE
-3-6" thick cemented sandstone
Z s*.oy .
t_ 2 1
£T ^* \
Q^ *3v ^0
!""i I—I ^*zw3
o."-^
-
_
" 1/6"
_
-
-
-
_
3~
-
—
"
_
-
-
j_
i—^tn *§LU
Wo
Q •
.^Q.
a
106.7
122.2
^^
LU ^fy*^^
gfe
HLUi
u
21.0
13.4
Figure A-30, Log of Boring LB 15 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE 1! ... 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
- 30
- 32 -
- 34 -
- 36 -
- 38 -
- 40 -
SAMPLE
NO.
-B15-5
.B15-6 LITHOLOGYX'kr*
•XjX-
* » J » »*L*J* r
11
|||
II
::[:fcf;
•:$:•[•GROUNDWflTERSOIL
CLASS
(USCS)
BORING LB15
ELEV. (MSL.) 250 DATE COMPLETED 11/30/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
-Becomes medium to very coarse-grained and massive
BORING TERMINATED AT 41 FEET PENETRflTIONRESISTANCE(BLOWS/FT.)20/11"
20
>
la
a
128.9 MOISTURECONTENT OO12.4
Figure A-31, Log of Boring LB 15 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST
H ... DISTURBED OR BAG SAMPLE K] ... CHUNK SAMPLE
... DRIVE SAMPLE (UNDISTURBED)
... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE
DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
- 4 -
- 6 -
- 8 -
- 10 -
- 12 -
H
- 16 -
- . -
- 18 -
-
- 20 -
- 22 -
- 24 -
- 26 -
- 28 -
SAMPLE
NO.
-
LB16-,
JB16-2
>-
njo
H
^/-,
/•// \
wfa
yMffw//&
W/w
'v/ffiy
H!
H
' '', '/ ,
'.' ''. '.
fi|•£vi
•IKvf
:$]$
:£;)•:[
%%^/*"
'AJffik
wb
m
m
j
rrUlJp-^
~t
fy
CD
SOIL
CLASS
(USCS)
CL
CL
ML
SM
CL-SC
BORING LB 16
ELEV. (MSL.) 175 DATE COMPLETED 11/30/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
TOPSOIL
Stiff, humid, dark brown, Sandy CLAY
SANTIAGO FORMATION
Hard, damp, olive-light brown, Sandy CLAYSTONE
-Very fractured and weathered, with calcium sulfate
filling some fractures
Dense, damp, light olive, Clayey SILTSTONE
Dense, damp, light brown to tan, Silty, fine
SANDSTONE, massive
-Irregular depositional contact approximately N-S,
^ 20S; no shearing '
Hard, moist, light olive to brown, Sandy
CLAYSTONE to very Clayey, fine SANDSTONE
-Massive, blocky fracturing
z /-\oy .
!^i '
P^Sujjjjo
u^eoQ_CEw
^S/U"
-
-
—
-
-
-
-
4
~"
-
-
-
^,
1— ^ffl *gjj
Q •
cc^Q
121.4
^
LU^
fV
Sg
=c3o
13.3
Figure A-32, Log of Boring LB 16 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
® ... DISTURBED OR BAG .SAMPLE B ... CHUNK SAMPLE T. ... 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
- 30
- 32 -
34
—
- 36 -
"
- 38 -
- —
- 40 -
- 4.9 —
- 44 -
- 46 -
48
~ 50 -
SAMPLE
NO.
-B16-3 1
JB16-4 1!
LJ316-5 1
.J816-6
L.B16-7
CDOd
H_]
m
im,
ill
'4:]:«t'
»[• .# r
* r \ *t*
I%*J*»r*
iferi
M'$j yKr'
r:f'':
V/JWY
w
j
5:]?
::±:
I'vi-r* ->*1''L
5 >M\h
^jj
z
z
Q
Qi
U)
SOI1-
CLASS
(USCS)
SM
CL
ML
SM
BORING LB 16
ELEV. (MSL.) 175 DATE COMPLETED 11/30/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
-Clay seam-contact N60E 20SE 1/16-1/4" thick r\ wet, plastic and undulating; with very fractured, ix
t iron-stained zone ~ 2" on either side ('
Dense, damp to moist, light brown to olive, Silty,
medium to coarse SANDSTONE, with some clay
-Fine, gravelly sand along nearly horizontal contact
Hard, moist, medium olive-brown, Silty
CLAYSTONE
Very hard, damp, dark gray-olive, Clayey
SILTSTONE, with some very fine sand
Dense, damp, light brown, Silty, fine SANDSTONE
-
BORING TERMINATED AT 52 FEET
ZLU~
^C L^ \Q£ v^T (f)
zw3
Q_"-w
14
~~
p—16
"
-
20/11"
|2
g"
>6
Q
123.8
128.0
,-s
h^u
13.3
10.5
Figure A-33, Log of Boring LB 16 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST
... DISTURBED OR BAG SAMPLE ... 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
- 2 -
- 6 -
- 8 -
—
m —
- 12 -
—
- 14 -
-
- 16 -
-
- 18 -
—
- 20 -
- 22 -
"• ~™
- 26 -
- 28 -
SAMPLE
NO.
1
•J317-1 1
-B17-2 |
.B17-3
>-
o
o
a
/y\/y
SAS/yVy/yyy/Y*/Y
m
vm'wkH'HFH*JVLyKr'>Y*fk:]:%
:;('|':f
•:[:%•[
ijtvif
>[:]::[
» *]* k
* f 1 *k
:ii::
:ifein
:•!:&[
*«., •%%
* r L
** r i *L
'All't
•K't.yX
'' //
• / •',
/' i ' '
reLU
<f
-|
—1
CD
V
SOIL
CLASS
(USCS)
CL
CL
SM
SM
VIL-CL
SM
BORING LB 17
ELEV. (MSL.) 240 DATE COMPLETED 12/1/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
FILL
Soft, humid, mottled dark brown to light olive, Silty
CLAY, with some sand, porous texture, rootlets
SANTIAGO FORMATION
Very stiff, damp, medium olive, Silty CLAYSTONE;
very fractured, brittle
., -Near-horizontal contact (transitional over several
^ inches) >
Dense, damp, light olive to brown, very Silty, fine
SANDSTONE, with some clay
-6" x 24" lenticular concretion
-Becomes light brown to tan, very Silty, fine
SANDSTONE
-Becomes medium-grained (orange, horizontal 3" bed)
-Becomes orange, coarse-grained
-Becomes very moist, orange, Silty, very coarse
SANDSTONE
., -Slight seepage (perched above sharp, horizontal,
v scour-contact '
Hard, moist, light olive, very Clayey SILTSTONE
-Cemented, fine sandstone, 6"-8"-h-, gray, horizontal
^ at base '
'Z. /-soW .
H ^1—i_ ^ ™
J£ttg
Q. *K^
-
-
8
~
-
-
-
-
-
-
—
>io-
-
—
—
—
>_
\— ^fn *:y 1 1
UlQ
^_GL
a
127.4
/N
LU*^oe^~n
wz
^~ Ou
11.5
Figure A-34, Log of Boring LB 17 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL
H ... DISTURBED OR BAG SAMPLE
... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
... CHUNK SAMPLE X ... 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
" 30
"
32
- 34 -
- —
- 7£ —
- 38 -
- 4.n —
4Z
SAMPLE
NO.
JB17-4
-B17-5
JJ17-6
>-CDO
O
I—H
iftJ::*t'|*:f:
* T \ *} *
yr/x/fr
wiv
illwfy-tfrsrsr
•m
'$$$&
'im,
OfLU
<E
3
0o:CD
I
SOIL
CLASS
(USCS;
SM
CL
BORING LB 17
ELEV. (MSL.) 240 DATE COMPLETED 12/1/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
Dense, wet, light olive, Silty, medium SANDSTONE
-Slight seepage
^ iron-stained basal layer) /
Hard, moist, medium olive, Silty CLAYSTONE
-Becomes very sandy (lenses)
-Becomes very hard, dark olive-gray, Silty
CLAYSTONE
BORING TERMINATED AT 42 FEET
Z£ /%o fH *HI_J i^F r""
fe^
£w§
}£v>°
fi%£
14
-
20/10"
j_
Ida .
a
123.4
^
tu^ce
winHyot
= 00
12.3
Figure A-35, Log of Boring LB 17 ICG'
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE K ... CHUNK SAMPLE f. ... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREOM 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
- 2 -
- 4 -
-
- 6 -
- 8 -
— _
- 10 -
- 12 -
-
- 14 -
-
- 16 -
- 18 -
- 20 -
—
- 22 -
- 24 -
SAMPLE
NO.
CDO
O
^/:,• /
Y/
iP
$/X0>
W/Y%
tit
»'.[.%%•H'kt
:i|:fc[
I-'fv
•Itjfo
:w
ill
¥$%
/ * . •
• . • .
-' • . -
I'L-JV:£v[
3:p
x:l::t-xt*.
o:u
<c
z
D
CD
SOIL
CLASS
(USL5)
CL
CL
SM
CL
ML
SM
T^/^TfcTTWT/^l T T\ ^ OBORING LB 18
ELEV. (MSL.) 215 DATE COMPLETED 12/1/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
COLLUVIUM
Soft, damp, dark brown, Sandy CLAY
SANTIAGO FORMATION
Hard, moist, medium light, olive-brown, very Silty
CLAYSTONE
Dense, damp, light brown to tan, Silty, fine
SANDSTONE
-Near-horizontal contact
Hard, moist, light medium olive, Sandy
CLAYSTONE, some silt
-Deposition-contact, N65E, 10S
Dense, damp, light olive-brown, very Sandy
SILTSTONE
-Cemented sandstone layer 12"+- thick,. — 20" wide
1 -Horizontal contact '
Dense, damp, light tan-olive, Silty, fine
SANDSTONE, massive
BORING TERMINATED AT 25 FEET
n^^~l
H^£
IfcS
tiWo
uS^tnQ_O:w
_
-
-
-
-
—_
„
-
|u^^ •
j£w
Q
^
a^
Wm
^0u
Figure A-36, Log of Boring LB 18 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE f. ... 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
- 4 -
_ _
- 6 -
- 8 -
- 10 -
_
- 12 -J
- 14 -
-
- 16 -
- 18 -
-
- 20 ~
- 22 -
- 24 -
-
- 28 -
SAMPLE
NO.
-B19-1
LB19-2
-B19-3
JB19-4
L.B19-5
oo
o
H
#/•y1
%*,
'-/•/
><<
^J
w•*M**v.v•.r.v
*L*J*
I* *:*I;x':
/ • , '
/x
'X ',
w
%fa«i1
:|:
:•[:{:
^
<L
Z
0ozCJ>
/
/
r
/
/
/
f
\
/
/
|
V
',
%.
f,/.
\
\
{
:!
SOIL
CLASS
(USCS)
CL
SC
-
ML
SM
ML
CL
SM
BORING LB 19
ELEV. (MSL.) 275 DATE COMPLETED 12/1/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
TOPSOIL
Stiff, damp, dark brown, Sandy CLAY
SANTIAGO FORMATION
Loose to medium dense, damp, reddish-brown, very
Clayey, fine SAND, with gypsum, very weatheredsandstone
Dense, damp, light olive, Sandy SILTSTONE
Dense, damp, reddish-brown, Silty, fine
SANDSTONE
-Fossiliferous, with organic odor
-Cemented sandstone (concretion)
Dense, moist, light olive, Clayey SILTSTONE, with
some sand
-Horizontal bedding_-contact
Very stiff, very moist, medium olive, Silty
CLAYSTONE, with interbedded sandstone
(fossiliferous) and gypsum, and jarosite (iron sulfate)
coatings on fractures
Dense, moist, reddish-brown, Silty, fine
SANDSTONE; very fossiliferous
ZLU~
H^Hi&jSgKjffl
D. ^
6_
-
-
-
-
-
_
1
~
-
-
Sjj
Q .
£~0
121.1
~
o:^
H-Z
Hifl
i§u
9.4
Figure A-37, Log of Boring LB 19 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
... DISTURBED OR BAG SAMPLE ... CHUNK SAMPLE X ... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THEDATE INDICATED. IT is NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
«* PROJECT NO. 06403-12-01
DEPTH
IN
FEET
- 30
- 32 -
- 34
— —
- 36 -
_ -30 _
- 40 -
- 42
_ _
- 44 -
SAMPLE
NO.
J819-6
LB19-7
LB19-8
J819-9
CDa
o
H
HfH'mk
W$/
y$iw
7$%%
HH•.r.i.v
:%$ir:•XiX-*<:fp>j:W--M'/%%w
y$%wyx///y
''$m
QC.Jj
•3.
Z
o
CD
T
SOIL
CLASS
(USC5)
ML
CL
SM
:L-ML
T>/^T*TVT/^l T T» -t f\BORING LB 19
ELEV. (MSL.) 275 DATE COMPLETED 12/1/99
EQUIPMENT ROTARY BUCKET 30"
MATERIAL DESCRIPTION
Hard, moist, olive, Silty CLAYSTONE
-Strong seepage at 34.5 feet
^ -Horizontal contact '
Hard, wet, medium-dark olive, Silty CLAYSTONE
-Fractured (with water seepage) and jarosite/gypsum
coatings
-Horizontal contact
Dense, moist, reddish-brown, Silty, medium to coarse
SANDSTONE
Very hard, moist, dark gray-olive, Silty CLAYSTONE
to Clayey SILTSTONE
BORING TERMINATED AT 45 FEET
ZQJ^
l-^U.
uj£jo
u^coQ_°-s^
9
16
—
|d
o;~a
107.2
i-£
i , iLLl
£^o
21.5
Figure A-38, Log of Boring LB 19 LOG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST
^ ... DISTURBED OR BAG SAMPLE EJ . . . 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
- 2 -
- 4 -
- —
- 6 -
- 8 -
- 10 -
- 12 -
- 14 -
—
- 16 -
-
- 18 -
- 20 -
- 22 -
- 24 -
- 26 -
-
- 28 -
C!C
SAMPLE c
NO. fE
1-
•'/
: '
:;-
SBl-l I'..
H-"
N:
sBi-2 y//
L/''
v-
SB 1-3 IK./
X '
/ *
I ///'''.
'<,
§
QLUJ
?OUNDUACD
,
"
_-_
•
_-_
''',
'/•
'/,
"
' *
^/,
/>
'/•
SOIL
CLASS
CUSCS)
ML/CL
ML/CL
ML
BORING SB 1
ELEV. (MSL.) 140 DATE COMPLETED 11/11/99
EQUIPMENT IRA 300
MATERIAL DESCRIPTION
ALLUVIUM/COLLUVIUM
Soft, damp, dark yellowish-brown, Sandy
SILT/CLAY, highly porous, roots
TERRACE DEPOSIT
Stiff, damp, pale yellowish-brown, Sandy
SILT/CLAY, slightly porous
-Becomes dusky yellow to grayish-orange to pale
yellowish-brown, with dark yellowish-orange speckles
_
-Mottled/stained black
SANTIAGO FORMATION
Very stiff, damp, pale yellowish-orange to
grayish-orange, Sandy SILTSTONE, moderately to
intensely weathered, poorly defined laminations
ZLJJ~Hy^
UJ^O
UJ^CQQ_ lpt»\^
9
18
-
-
21
—
-
-
22
—*
-
27
-
-
>
jj£
^•-'a
105.9
/"s
1 — 1~
ot^z.
u
16.7
Figure A-39, Log of Boring SB 1 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL E... STANDARD PENETRATION TEST I... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE f. ... 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
30
SAMPLE
NO.
SB1-6 LITHOL06Y:•'.'•":6ROUNDUATERT
SOIL
CLASS
CUSCS)
MH
BORING SB 1
ELEV. (MSL.) 140 DATE COMPLETED 11/11/99
EQUIPMENT IRA 300
MATERIAL DESCRIPTION
Very stiff, moist, pale, yellowish-orange to
<Travish-r»raT!ffp ^nnrfv ^TT T^TfiNTP intpncMv *
\ weathered, wet at tip of sample /
BORING TERMINATED AT 31 .5 FEET PENETRATIONRESISTANCE(BLONS/TT.)16
E-«ul
Bo
&a MOISTURECONTENT (X)Figure A-40, Log of Boring SB 1 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL
ii ... DISTURBED OR BAG SAMPLE
... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
i ... CHUNK SAMPLE X ... 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
- 2 -
-
- 4 -
"
- 6 -
— —
- 8 -
_
- 10 -i\J
- 12 -
— 1/114
- 16 -
- 18 -
- 20 -
- 22 -
- 24 -
- 26 -
-
- 28 -
Lc
SAMPLE c
NO. jE
//
'/ f
y /
' y
^
y
SB2-1 [/'
•yL'/
V 'I/_
'
/
-
•,
/
'
\V'
SB2-3 ["'// 'L / //
^•.'
//
SB2-4 |f/'
1'
X
/ y
SB2-5 |'/
Y/,•/
pt
KLU
3 <E
) a: z
•1 OJ QiQ
X
y1 .
'/
/ •
'/t
'/.
s /
X
/ ,
/ *
y y
/<-
/ •
/''
/'I
/^' /
/J
>/
'
//
/ '
/ /
^ '
y 'y
SOIL
CLASS
(USCS)
ML/CL
ML/CL
ML/CL
T* rf^TfcTX.Trf'^l CtT* ^BORING SB 2
ELEV. (MSL.) 115 DATE COMPLETED 11/11/99
EQUIPMENT IRA 300
MATERIAL DESCRIPTION
ALLUVIUM
Very stiff, damp, dark yellowish-brown,
SILT/CLAY, porous, scattered soil carbonate, flecks
and stringers
-Becomes pale yellowish-brown
TERRACE DEPOSIT
Soft to stiff, damp to very moist, dusky yellow
SILT/CLAY
-Groundwater at 15 feet
Stiff, wet, mottled dark yellowish-orange, elastic
SILT/CLAY
-Becomes firm, moist to damp, dusky yellow,
mottled dark yellowish-orange, SILT/CLAY
Zyj^N
^J f ) *
**•• ^E v™£i ,**• \
Qi ff\ ^^j"! |— |^
S^CQQ."iN-'
19 "
18
6-_
-
25
-
-
7
-
-
^
C^v|ui
go
D£W
0
109.4
104.3
^LLlJSo:
feHyot£
u
19.2
21.6
Figure A-41, Log of Boring SB 2 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL
H ... DISTURBED OR BAG SAMPLE
C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
B... CHUNK SAMPLE X... WATER TABLE OR SEEPAGE
NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THEDATE INDICATED. IT is NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
reel
- 30
SAMPLE
NO.
SB2-6 |THOLOGYH
eg
UNDUATE§CO
-
SOIL
CLASS
CUSCSj
ML/CL
T» /"\T* TTWT/"1 C"1"I"fc ^BORING SB 2
ELEV. (MSL.) 115 DATE COMPLETED 11/11/99
EQUIPMENT IRA 300
MATERIAL DESCRIPTION
SANTIAGO FORMATION
Stiff, moist to wet, dusky yellow, mottled dsxk
\ yellowish-orange, SILTSTONE/CLAYSTONE, highly
\ weathered /
BORING TERMINATED AT 31 FEET NATIONSTANCEIS/FT.)UlHjOzfy-JLU^tQQ^V^^S
28
!JENSITYC.F.)"-1 .
&Q
^\sWm
Hl-?2E0O
Figure A-42, Log of Boring SB 2 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C
H ... DISTURBED OR BAG SAMPLE Ekl
.. STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
.. CHUNK SAMPLE JL ... 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
_
- 2 -
- 4 -
- —
- 6 -
- 8 -
- 10 -
-
- 12 -
-
- 16 -
- 18 -
- 20 -
- 22 -
- 24 -
_ r\f26
SAMPLE
NO.
SB3-1
SB3-2
SB3-3
SB3-4
SB3-5
/•/
''
/
/
/
'/
/
/
/
/
/
/
/
/
'/
/
/
X(
I
>-C£C
C
H
•"/
/
/
/
'
/
/
/
/
/
/
/
/
/
/
/
/
'^
1
,
/
/
/
^/
^/
''
/
/
;
/
V
/
'
/
I1
^JJ
tn
oKCD
SOIL
CLASS
(USCS)
VfL/CL
VIH/CL
CL/ML
f* y^T%TTk. T^*1 CTT1* ^BORING SB 3
ELEV. (MSL.) 101 DATE COMPLETED 11/11/99
EQUIPMENT IRA 300
MATERIAL DESCRIPTION
ALLUVIUM
Stiff, damp, dark yellowish-brown, SAND,
SILT/CLAY
-Trace of sand below 10 feet
-Groundwater at 1 1 .5 feet
TERRACE DEPOSIT
Stiff, wet, very pale orange to gray-orange
SILT/CLAY
-Becomes very stiff, pale to dark yellowish-brown
SANTIAGO FORMATION
Stiff, damp to moist, mottled dark yellowish-orange
and yellowish-gray, Sandy CLAYSTONE/SILTSTONE
BORING TERMINATED AT 26 FEET
Z 'NHi
LuumQ- "^^
16
-
14
~
15
-
19
_
-
17
^_
^
Q •
oi^O
107.0
106.1
^r:
H*ijjL_o£%z
a
22.6
21.8
Figure A-43, Log of Boring SB 3 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
il ... DISTURBED OR BAG SAMPLE G ... CHUNK SAMPLE f. ... 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
- 2 -
- 4 -
- 6 -
- 10 -
- 12 -
- 14 -
—
- 16 -
- 18 -J. U
-
- 20 -
- 22 -
- 24 -
- 26 -
-
- 28 -
SAMPLE
NO.
I
L
SB4-1 1
SB4-2 1
f
SB4-3
1
SB4-4 I
f
1
SB4-5
>
/
'*.
/
X";
'y
| /
\IT/
f'/
/
/
/
''
•1°
[-.-a
?.-.
•!
1"
Uc
c
1-
H_
.
-
/
/
/
/
/
/
/
/
/
'/
/
/
'
/
.'-i
0-
f;
"f.
it
•4"m
'o;
if.
:
\\
'/
/
/'
/
•/
/
/
/,
V
//
y
/ ,
/
^/
/
• '/•'•'.%..'_••
r-:-
,'T;
'£;;
/::
.-,?
?;-;
"-:^
.
i-H
Kii
c
D
Occ:CO
5
SOIL
CLASS
»| |CPO\(USCS)
VIL/CL
ML
SP
T^ f~\ "JT\ TTk. T^^ CIT^ ABORING SB 4
ELEV. (MSL.) 90 DATE COMPLETED 11/11/99
EQUIPMENT IRA 300
MATERIAL DESCRIPTION
AIXIJVIUM
Very stiff, damp, moderate brown to moderate
olive-brown and brownish-black, Sandy SILT/CLAY
-
Very stiff, damp, dark yellowish-brown, Sandy SILT,
small, fingernail sized shells
-Groundwater at 13.5 feet
-Charcoal flecks, sampler wet
TERRACE DEPOSIT
Medium dense to dense, very moist to wet,
reddish-brown to brown, Gravelly, fine to coarse
SAND
-Coarse gravel fragments, becomes moist
-Well graded, fine to coarse sand, wet, gravelly
-Mottled many colors
o1^^d_J f ) •
<E^\
r~" (Hn
U^fflQ_ "-W
18
17
-
15
-
25
-
-
55
-
~
t__n/-sH .
z^^ *>t
Q
110.8
-^
^2
HL.Eg
o
18.1
Figure A-44, Log of Boring SB 4 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
... DISTURBED OR BAG SAMPLE ... CHUNK SAMPLE 3E ... 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
rccT
30
SAMPLE
NO.
SB4-6 |THOLOGYH
HH«,•;••:•:-.
fK
UNDUATE2iCD
SOIL
CLASS
(USUS}
ML/CL
BORING SB 4
ELEV. (MSL.) 90 DATE COMPLETED 11/11/99
EQUIPMENT IRA 300
MATERIAL DESCRIPTION
SANTIAGO FORMATION
~\ Very stiff, moist, yellowish-gray, Sandy r
\ SILTSTONE/CLAYSTONE /
BORING TERMINATED AT 31 FEET [RATIONSTANCEJS/FT.)2«3Lu£mCL "-^
29 JENSITYC.F.)>°-^^ *.*01a
-
/^
iu:5
§HH
f mHS
°2E0U
Figure A-45, Log of Boring SB 4 LCG
SAMPLE SYMBOLS LH ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE G ... CHUNK SAMPLE 3E ... 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
reel
- 2 -
- 4 -
—
- 6 -
- 8 -
- 10 -
-
- 12 -
- 14 -
- 16 -
"* ^
- 18 -
_ _
- 22 -
- 24 -
- 26 -
uc
SAMPLE c
NO. f!l_
~
," •/
S',
/ •
'*.,
/^sBs-i \y
'/•
i ,
/
./
':<
>
'/.
' •
>'
'•
>
1
SB5-5 I '
OL• 111) 1—i <L
i Q
• Z)
1 0J CCCD
-
/
:/
-
• /
• /
/
- ,
/
'/'
'/
'/'
/
'/'
/^
•
•
.
SOIL
CUSS
(uses;
ML/CL
ML/CL
vlH/CL
ML
TTh /^T> TTVT/^1 OT* FBORING SB 5
ELEV. (MSL.) 75 DATE COMPLETED 11/12/99
EQUIPMENT IRA 300
MATERIAL DESCRIPTION
ALLUVIUM
Very stiff, damp, light olive-gray, Sandy SILT/CLAY
••
-Becomes very stiff
TERRACE DEPOSIT
Very stiff, very moist, light olive-brown to moderate
yellowish-brown, Sandy SILT/CLAY
-Groundwater at 19 feet
SANTIAGO FORMATION
Firm, moist, dusky yellow,
SILTSTONE/CLAYSTONE, highly porous, intensely
weathered, sampjer wet
Very stiff, wet to saturated, pale olive, fine, Sandy,
SILTSTONE, with 2-4" thick, fine to medium
sandstone interbeds, moderately weathered
BORING TERMINATED AT 26.5 FEET
^•i^^
£^£
i! H^
Lu"oCL ^
19
27
-
-
19
•~
-
—
14
-
27
>-
lii
^ *
0&a
104.3
g5
gfe
n[if
Eg
U
23.2
Figure A-46, Log of Boring SB 5 LCG
SAMPLE SYMBOLS.D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
§1 ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE T. ... 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 HOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
0
_
- 2 -
~
- 4 -
- 6 -
- —
— o5
- 10 -
- 12 -
- 14 -
- —
- 16 -
- 10lo
_
- 20 -
- 22 -
- 24 -
C!
SAMPLE c
NO. fE
/ '
//
'/,
/ '
/
>y xY/ /
\J//
SB6-1 •/'
\C s
V/ '
' ' •£I , 4
""••
-
SB6-2 |:
R-
.
,\;
I "
SB6-3 |:1n-:|
•;.
7 x
/xV,L- / '
SB6-4 1 /./
1 /
rV y
SB6-5 I
o;
LU» i—<c
•-Q
! O1 3
, ,
/ •
•,'/./ /
* f/
, //./ /'/
y •-
".". I
\.\ '•
Jr
f -
1'-'
I-.
f'1 -
t. '
, /
/
/
/-
/ >
/•
SOIL
CLASS
(Uses)
ML/CL
SM
SM
ML/CL
ML/CL
T*/~Y'TfcT%.T/'""1 C*T» ^BORING SB 6
ELEV. (MSL.) 98 _ DATE COMPLETED 11/12/99
EQUIPMENT IRA 300
MATERIAL DESCRIPTION
ALLUVIUM
Very stiff, dry to damp, pale to moderate
yellowish-brown, SILT/CLAY, veined with soil
carbonate
,
Medium dense, damp, dark yellowish orange, Silty
fine SAND
TERRACE DEPOSIT
Medium dense, damp, dark yellowish-orange, Silty,
fine to medium SAND
Very stiff to hard, moist, dark yellowish-brown,
mottled olive to orange, SILT/CLAY
SANTIAGO FORMATION
Very stiff to hard, moist, pale olive,
SILTSTONE/CLAYSTONE, moderately weathered
BORING TERMINATED AT 26 FEET
NO GROUNDWATER ENCOUNTERED
§1^tJ f \ •Hyi-h-gu.i§£
tU&JO
Q- N-'
28
8
-
•
21
~
_
—25
~
27
>-
fcz11-uijO ^
>b
Q
102.8
108.3
^
Sgn ^_°z
u
5.0
19.5
Figure A-47, Log of Boring SB 6 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL E ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE T. ... 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
- 2 -
- 4 -
-
- 6 -
- 8 -
- 10 -
-
- 12 -
- 14 -
—
- 16 -
—
- 18 -
- 20 -
—
- 22 -
-
- 24 -
- 26 -
- 28 -
SAMPLE
NO.
SB7-1 I"LITHOLOGY" H 1 •
"'• \~
•\:k--
"i{i:K-:i->-:vr
SB7-2 •"- , ! -Frr1 -I- 1 •
SB7-3
L
:-i);
":}|
;1|'_
-:]•-!".
I1--{{..
,'--lf"SB7-4 B 1-Lr
SB7-5 I
n V
"•1- j -1
>-Jl
•\ \
1!{-GROUNDUATER |SOIL
CLASS
(USCS)
SM
SM
BORING SB 7
ELEV. (MSL.) 170 DATE COMPLETED 11/12/99
EQUIPMENT IRA 300
MATERIAL DESCRIPTION
ALLUVIUM
Loose to medium dense, dry, light olive-brown, Silty,
fine to medium SAND, porous, rootlets
-Becomes non porous, medium dense
-Laminae, spaced approximately 6" apart
TERRACE DEPOSIT
Medium dense, humid, grayish-orange, Silty, fine to
medium SAND ENETRATIONZESISTANCEBLOWS/FT.)Q_"-^
11
22
-
-
13—
—
-
21—
-
-
-
22
-RY DENSITY(P.C.F.)Q
93.0
92.4 MOISTUREONTENT OOu
5.0
5.4
Figure A-48, Log of Boring SB 7 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL E... STANDARD PENETRATION TEST
ii ... DISTURBED OR BAG SAMPLE E ... 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
reel
~ 30
- 32 -
34
- 36 -
- 38 -_
40
- 42 -
- 44 -
- 46 -
4o
- 50 -
SAMPLE
NO.
SB7-6
SB7-7
SB7-8
SB7-9
SB7-10
CDoi
H_l
:r•i..
i-f}
7 -/'' '/'•/ ~ /
' ' /
/ •/
/ •/'• 7'' / ' t/ . X
/ ./
/- V '
) )
) )
> ),•7 •/•/• y
/ - /
' /
'/• /'
/ - /
Qi
<T
3
•J3
SOIL
CLASS
SM
ML/CL
ML
ML/CL
ML/CL
BORING SB 7
ELEV. (MSL.) 170 DATE COMPLETED 11/12/99
EQUIPMENT IRA 300
MATERIAL DESCRIPTION
Medium dense, humid, very pale orange to
grayish-orange, Silty, fine to medium SAND
Hard, damp, moderate yellowish-brown, Sandy
SILT/CLAY, stringers of soil carbonate
Hard, damp to moist, mottled yellowish-oranges,
dusky yellow, SILT, fingernail sized shell fossils
Stiff, damp to moist, mottled black, dark and pale
yellowish-brown, Sandy SILT/CLAY
SANTIAGO FORMATION
Very stiff, moist, mottled dark yellowish-orange,
yellowish-gray, black, SILTSTONE/CLAYSTONE
BORING TERMINATED AT 51 FEET
NO GROUNDWATER ENCOUNTERED
ZLJ'-VS cji_!
H ^r—IgjS
|"T |«| ;•»
gLU^CL ^
25
52
56
_
13
-
—
31
>-r™ * — t
iS^"* •
>Q-
Q
95.6
108.1
107.8
^
Ll 1
wg
i|
u
7.3
11.0
21.0
Figure A-49, Log of Boring SB 7 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE E ... CHUNK SAMPLE Y. ... 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
tCCTFEET
- 2 -
-
- 4 -
"
- 6 -
•~ ~~
- 8 -
-
- 10 -i\J
'
- 12 -
-
- 14 -
—
- 16 -
1 o18
- 20 -
- 22 -
- 24 -
- —
- 26 -
- 28 -
SAMPLE
NO.
1
1
SB8-1 1
f
ISB8-2 1
I
I
SB8-3 I
L-SB8-4 1
1
SB8-5 1F
5
£
<"
/ -
XV
/ •I'<s
L,'• ,
X
/
//
'• y
' ,
\.<
Yr-
1
* ,
-/
1
}
:
j
~s.
/
' :/
>
f -
4
f ^
/ •
/ _
y
/ .
^
/
/ -
/
• /
,
^±1
a;
z
1
CD
I
SOIL
CLASS
t\ ICf'C N(USCS)
VIL/CL
VlH/CL
ML
T*rf""VT*YT^T/"'1 CtT» OBORING SB 8
ELEV. (MSL.) 110 DATE COMPLETED 11/16/99
EQUIPMENT IRA 300
MATERIAL DESCRIPTION
ALLUVIUM
Finn, damp, dark yellowish-brown, SandySILT/CLAY, porous, roots
-Groundwater at 9.5 feet
-Becomes stiff
-Becomes very stiff to hard, moist, mottled dark
yellowish-orange, pale olive and dark
yellowish-brown, SILT/CLAY
Firm, moist, grayish orange to dark yellowish-orange,
Sandy SILT
Stiff, moist, dusky yellow, mottled dark
yellowish-orange, Sandy SILT, some fine sand,
moderately to intensly weathered
-Becomes clayey
2 _og .
H ^ i
QJ^OT
ujHo
S^ma. °^-*s
14
14
~
-
-
-
31
-
-
_
8
-
21
-
^_
^—M .
|d^^ *^ ft
0
108.8
113.9
103.8
^^
m«^rv*^ist^i E3
^™ t^u
13.6
18.2
23.5
Figure A-50, Log of Boring SB 8 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL E
ii ... DISTURBED OR BAG SAMPLE B
.. STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
.. CHUNK SAMPLE T. ... 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
~ 30
- 32 -
- 34 -
SAMPLE
NO.
SB8-6
SB8-7
CDO
O
I—H_1
;•'•''.'.
' ' ' .
: ' •'
'/,
'/
//S
KJJ
3
0a-CD
SOIL
CLASS
(us us;
ML/CL
CH
T> /"VT"* TVTV'1 C*T* OBORING SB 8
ELEV. (MSL.) 110 DATE COMPLETED 11/16/99
EQUIPMENT IRA 300
MATERIAL DESCRIPTION
Firm, moist, light olive gray, Sandy
SILTSTONE/CLAYSTONE, intensly weathered
Very stiff, moist, olive black, plastic CLAY,
moderately weathered
BORING TERMINATED AT 36 FEET
Zuj~
i|l
j! ! H«
u^mD- ut>-'
11
18
|2
^ «
a^a
~
Is§iu
Figure A-51, Log of Boring SB 8 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL
H ... DISTURBED OR BAG SAMPLE
... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
... CHUNK SAMPLE 1. ... 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
- 2 -
- 4 -
—
- 6 -
8
- 10 -
- 12 -
- 14 -
~
- 16 -
- 18 -
- 20 -
- 22 -
- 24 -
- 26 -
-
- 28 -
SAMPLE
NO.
SB9-1
SB9-2
SB9-3
SB9-4
SB9-5
-'
•
-'
-
.
•"
-
>
/
X
-T
•A
r
/.
'/
/
<
/
CDr
H
,
-
•
.;•
•
•
-
:
-
/
X
/
/
/
/
•
.•
-
'.'
•
-_
.
•/'•
/
'<t
•/
/
/
/
'
'<
•1
L 1
•11-
\-
f.
au
T
— 1s
i
SOIL
CLASS
(USCS)
ML
SM/ML
ML/CL
5M/ML
T* /"\T* TT^.T/^1 OT> f\BORING SB 9
ELEV. (MSL.) 134 DATE COMPLETED 11/16/99
EQUIPMENT IRA 300
MATERIAL DESCRIPTION
ALLUVIUM
Stiff, dry, dark yellowish-brown, Sandy SILT
Medium dense to stiff, damp, grayish-orange, Sandy
SILT, Silty, fine SAND
Very stiff, damp, pale yellowish brown, Sandy
SILT/CLAY
-Groundwater at 16 feet
-Becomes damp to moist, dark yellowish-brown, some
fine sand
TERRACE DEPOSIT
Medium dense, moist to wet, dark yellowish-orange,
light olive-gray, grayish-orange, alternating 1-2" thick
beds of Silty SAND and SILT
0^^
I—« *~ Ll
ff *^ 'v
^C | [[ «J
CL_ "-'w
11
16
-
17
—
—_
21
~"
-
13
—
-
LJ^>I™" .Sli~^ *
o;^a
100.7
^
III »^
tK^
1-^
Htf.
ig
U
11.7
Figure A-52, Log of Boring SB 9 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL B ... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE f. ... 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
reel
30
SAMPLE
NO.
SB9-6 |THOLOGYH
Y/]
Q;UNDWATEoa:ID
SOIL
CLASS
(USCS)
CL/CH
-
Tl /~VTfc TT^T/"*l OTT* f\BORING SB 9
ELEV. (MSL.) 134 DATE COMPLETED 11/16/99
EQUIPMENT IRA 300
MATERIAL DESCRIPTION
Very stiff to hard, moist, mottled dark
"\ yellowish-orange, pale olive, very pale orange, CLAY f
\ -Becomes olive black at 31 feet /
BORING TERMINATED AT 31 FEET •RATIONSTANCEJS/FT.)LUHozfy_iLUiiicQQ_ tC^^
26
fc
I"a .>-s?ccQ
110.8
^N
LU-jo:
^^WmHy
§^E0O
20.7
Figure A-53, Lo£ of Boring SB 9 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
§i ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE 3C ... 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
_
- 2 -
- 4 -
-
- 6 -
- 10 -
- 12 -
- 14 -
- 16 -
IS
- 20 -
- 22 -
"
- 24 -
-
- 26
SAMPLE
NO.
P
SB10-2
SB10-3 1
F
SB 10-4 1
SB10-5 I
-
-
'
:/
/
^
/_
y
•:\:
'*,
''*,
I
V.
Y'
1
(••r
f—
\-H
-
•
"
^
-
/
<
'
•
-
[
••
I
'6
%
I
%
'/<
\1
11
.
*
•"-
^/
''',
'/
•/
1It
i'-'
;;/•';
. •'•:
r '.
%w,%m
^u
<r
0<£CD
_
SOIL
CLASS
tUSCS;
ML
SP/SM
ML/CL
VtL/SM
sw
CL
BORING SB 10
ELEV. (MSL.) 118 DATE COMPLETED 11/16/99
EQUIPMENT IRA 300
MATERIAL DESCRIPTION
ALLUVIUM
Very stiff, damp, dark yellowish-brown, Sandy SILT,
highly porous, roots
Medium dense, damp, grayish-orange, poorly graded,
fine to medium SAND/Silty SAND
Very stiff, damp to very moist, dark and moderate
yellowish-brown, alternating 6" to 1' thick Sandy
SILTS/CLAYS
-Groundwater at 10 feet
Loose to stiff, moist to wet, moderate
yellowish-brown, Silty, fine SAND, fine, Sandy SILT
TERRACE DEPOSIT
Dense, wet to saturated, grayish-orange, well graded,
fine to coarse SAND
^ -Gravelly, clayey sand, mottled yellowish-oranges ^
SANTIAGO FORMATION
Very stiff, moist, light olive-gray, CLAYSTONE,
moderately weathered, carbonate lined laminae
-Becomes very hard, damp, pale olive, slightly
\ weathered, "bentonitic/soapy" texture /
BORING TERMINATED AT 26 FEET
ZLU'-
i^ C 1 *Mzh"<r <E!K^C/jCO
i! ^^
Lu"ma. "-~*s
01
20
-
13
-
-
42
—
~50/5"
>•
^"^^M ^
^1 1
LU,J
^^ »
o:^Q
105 8
106.7
118.3
^N
(jj "^fy ^
"^c/52
[— jLlJ
g§
CJ
in o
23.7
-
15.3
Figure A-54, Log of Boring SB 10 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL
H ... DISTURBED OR BAG SAMPLE
C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
B ... CHUNK SAMPLE T. ... 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
- 2 -
- 4 -
- 6 -
- 10 -
- 12 -
-
- 14 -
- 16 -
-. —
- 18 -
-
- 20 -
- 22 -
- 24 -
- 26 -
SAMPLE
NO.
SB11-1
1
SB11-2 I
1
SB11-3 1
1
f
SB11-4 I
SB11-5 1
X
/
..
•x
x
X".
"
x
x
\\.
'/
x
x
x
x
x
X
*•1*
\1i
>•Cic
1H
'
-s
/
^
/
x
x
'
-
/
j*
x
-x
/
.
-x
>
::
PI
%i
X'
/'
•/
./
X"
/'
/'
-/
/•/
X"
/'
x
/'
x"
X"
/
x•/
X"
/'
x
::.t
1
i11
o:jjj
3
Z
-JliCD
SOIL
CLASS
/i ippp \(USCS)
ML
ML/CL
SM
CH
T*/^TfcTm.Trf™1 OT> ^ ^BORING SB 11
ELEV. (MSL.) 153 DATE COMPLETED 11/16/99
EQUIPMENT IRA 300
MATERIAL DESCRIPTION
ALLUVIUM
Stiff, dry, pale yellowish-brown, mottled dark
yellowish-orange, Sandy, Clayey SILT, highly porous,
scattered white soil carbonate
-
Very stiff, damp, pale yellowish-brown, Sandy
SILT/CLAY, slightly porous
SANTIAGO FORMATION
Very dense, damp, grayish-orange, mottled olives,
Silty, fine to coarse SANDSTONE, moderately
weathered
-Cemented
Hard, dry, olive, mottled browns, CLAYSTONE,
slightly to moderately weathered .
BORING TERMINATED AT 26.5 FEET
z <•>o W •
<E^\
H ""^gffi§
Q_D;N^
9
25
-
-
-
25-
~
-
-
50/4.5"
-
35
-
^t~Hgul
WoQ .
a
116.5
116.5
111.2
^V*LuiSo:
H^
^3 '^9^~ Ou
17.2
17.2
11.5
Figure A-55, Log of Boring SB 11 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C . . . STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
... DISTURBED OR BAG SAMPLE B ... 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.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
- 2 -
- 4 -
_ f-o
- 8 -
- 10 -
- 12 -
SAMPLE
NO.
Tl-1
Tl-2
-
/
/
_-'
-'
-
-
*,»*'
>(J.C§
l_
-
/
/
" ' >s
/
•
F:
[*>:• «
. ,
/
/
• -
•
":.
\A-
KUJ
<C
D
— I
3
SOIL
CLASS
(uses;
CL
ML
SM
TRENCH T 1
ELEV. (MSL.) 125 DATE COMPLETED 11/3/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Very stiff, dry, brownish black, Sandy CLAY
ALLUVIUM
Very stiff, dry, light olive brown to dusky yellow,
Sandy SILT with lenses of brownish black clay up
to 2 feet thick, highly porous, abundant soil
carbonate
SANTIAGO FORMATION
Dense, dry, dusky yellow to dark yellowish orange,
— \ outy, line to medium oArNUoiurNti / —
TRENCH TERMINATED AT 13 FEET
O UJ .Hyh-i-ipu.<E£\£w§
S^mQ- ^
-
>-
|o
^"^ *
ta^Q
^^
^^M^
°Z
CJ
Figure A-56, Log of Trench T 1 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST I... DRIVE SAMPLE (UNDISTURBED)
§1 ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE T. ... 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
- 2 -
- 4 -
- 6 -
- 8 ~
ID
- 12 -
SAMPLE
NO.
>_LITHOLOG• /
/
V
1 /
y
/
s
' /
, " ?
'{
(
' • //
/ - /
^ • /// x
X . .
.// • /
(
(
,
•*P'***t'I'ljl*
vX*» r ^ »i
o:UJ
GROUND14A1SOIL
CLASS
(USCS)
CL
MH
SM
TRENCH T 2
ELEV. (MSL.) 105 DATE COMPLETED 11/3/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Very stiff, dry, brownish black, Sandy
SILT/CLAY, some fine grained sand, highly
porous, abundant sea shells
Very stiff, dry, light to moderate olive brown,
SILT, some fine sand, highly porous
SANTIAGO FORMATION
Dense, dry, dusky yellow to dark yellowish orange,
\ jilty, line to medium oANDMUNb /~
TRENCH TERMINATED AT 12 FEET
"Z. /-^ENETRATIORESISTANCEBLOWS/FT.Q_ "-^/
-
j_
lo
a
_MOISTUREONTENT (.'/.o
Figure A-57, Log of Trench T 2 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
il ... DISTURBED OR BAG SAMPLE B ... 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.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
_
- 4 -
-
SAMPLE
NO.
T-3 1 8
J
CDO
o
1—
-1
A/X
X/yy
: ' ••
QL±1
<C
n
— i
a
SOIL
CLASS
(USCS)
CL
VfT
TRENCH T 3
ELEV. (MSL.) 135 DATE COMPLETED 11/3/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVTUM
Stiff, dry, dark yellowish brown, Silty CLAY,
~\ some ruie sand, highly porous, abundant rootlets /—
SANTIAGO FORMATION
Medium stiff to stiff, damp, mottled oranges,
olives and browns, Sandy SILTSTONE, abundant
rootlets and soil carbonate, highly weathered
TRENCH TERMINATED AT 6 FEET
0^Hyi-l-JgLu<E£\
K«3
lj,| pr? poa. Lt\^
>•
|cJ
>b
a
-
~
w^
HL_°z
o
Figure A-58, Log of Trench T 3 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE Y. ... 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
_
- 4 -
- 6 -
- —
- 8 -
-
- 10 -
SAMPLE
NO.
T4-1
CD
LITHOLO/ X
' /
//
'///%//
Wmfr
ww
m,'jjjjjh
Wfa
9k,
W/Mfo
W///A
Kjj
GROUNDUASOIL
CLASS
(USCS)
CL
CL
TRENCH T 4
ELEV. (MSL.) 190 DATE COMPLETED 11/3/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Very stiff, dry, pale yellowish brown, CLAY,
— \ some fine sand /—
SANTIAGO FORMATION
Stiff, damp, greenish gray, CLAYSTONE with fine
SAND, fractured, random orientations, moderately,
weathered, massive
-Less fractured, slightly weathered
-Contact undulatory, but generally horizontal,
poorly defined Sandy CLAYSTONE
TRENCH TERMINATED AT 11 FEET
2?UJ~ENETRATK*ESISTANCBLOWS/FT0- ^
—
L-
|cJ
Q MOISTUREONTENT Oo
Figure A-59, Log of Trench T 4 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL
0 ... DISTURBED OR BAG SAMPLE
B . . . STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
K ... CHUNK SAMPLE 1. ... 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
- 2 -
- 4 -
- 6 -
-
- 8 -
- 10
SAMPLE
NO.
CD0
O
Hi
'Y/YM/y'xYx//Vy
W'YYyw/m,
''<$'
vIlH** f J *>#
*L_* r
!?l:
C£jj
3.
Z
o
CD
SOIL
CLASS
cuscs)
CL
SM
MH
rril IT^T^T/^TT rri ?•TRENCH T 5
ELEV. (MSL.) 165 DATE COMPLETED 11/3/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, dry, pale to dark yellowish brown, Silty
CLAY, some fine to medium sand
SANTIAGO FORMATION
Loose, dry, very pale orange, Silty, fine to medium
SANDSTONE, weathered, approximately
horizontal, undulatory lower contact
Stiff, dry to damp light olive-gray SILTSTONE
\ intensly fractured, moderately weathered /
TRENCH TERMINATED AT 10 FEET
Zui^!|£
i! '"'n
UJ^m
Q.D:-'W
III *
bipj ^
o:^0
^
tz^
rn*
ofcj-iZ
o
, Figure A-60, Log of Trench T 5 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE T. ... 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
- 2 -
- 4 -
- 6 ~
SAMPLE
NO.THOLOGYa
/ ',// '/ ',// ', //', // ///'•, //'/. >// '/ /MIB
-
cc
UNDWATEKCB
SOIL
CLASS
(USCS)
CL/ML
ML
CL
TRENCH T 6
ELEV. (MSL.) 230 DATE COMPLETED 11/3/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
LANDSLIDE DEBRIS
i Stiff, dry, pale yellowish brown, SILT/CLAY, [x some fine and medium sand, abundant rootlets, /
\_ porous _'
Stiff, dry, greenish gray to grayish olive, very
Clayey SILT; weathered fractured, abundantcalcium sulfate and carbonate, mottled dark
~\ yellowish orange, scattered roots f~
\ -Grooved, slip plane, N80E, 45 degrees N. /
SANTIAGO FORMATION
Hard, damp, medium to light olive, very Silty
CLAYSTONE
\ -Thin calcium sulfate (gypsum) coatings along j
\ blocky fractures /
TRENCH TERMINATED AT 8 FEET •RATIONSTANCEIS/FT.)z«3u^mQ.LC^
S-Su.
Wu" .
&Q
*^s
Ul5
hV>\T\
Rl-SzE0U
, Figure A-61, Log of Trench T 6 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL E... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
... DISTURBED OR BAG SAMPLE ... 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.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
- 4 -
- 6 -
—
- 8 -
—
- 10 -
- 12 -
- 14
—
- 16 -
SAMPLE
NO.
CDoIj0
§
/
/
<
/
.;
/
/
^
'.
/
'/
/
/
;
//
//
^-/'/
/
^
^.
/
^
/
•/•</•/
/
-///
^'.^/
./
>
>
/
/
'/$/%%%%,
e
<r
GROUNDSOIL
CLASS
(USCS)
ML/CL
ML/CL
CL-ML
TRENCH T 7
ELEV, (MSL.) 210 DATE COMPLETED 11/3/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COULUVIUM
Stiff, dry, moderate yellowish brown, CLAY/SILT,
— \ abundant rootlets /~
LANDSLIDE DEBRIS
Stiff, dry to damp, light olive gray to greenish
gray Sandy SILT/CLAY, massive, moderately to
highly fractured and weathered, "punky"/mottled
appearance with "blebs" of Sandy material, porous,
abundant soil carbonate and sulfate (gypsum)
-Abundant randomly-oriented fractures and clay
seams
-Approx. 2-3 feet transition to near-horizontal .—
\ contact /
SANTIAGO FORMATION
Hard, damp to moist, olive to brown, Silty
CLAYSTONE
~\ -Massive to horizontal /~
TRENCH TERMINATED AT 17 FEET
guj~
£ \ "
i ^Zi
ENETRA1JESISTABLOWS/FQ. ^
-
—
>•
[ ,/"\
ti\ •£§U_
go
ofo
~
ilj "
D^MOISTUONTENTo
Figure A-62, Log of Trench T 7 ICG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL G... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... 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.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
_
- 2 -
-
- 4 -
— ™ "
. _
SAMPLE
NO.
T8-1 THOLOGYH_1
) ) )
((((
)))/
\\ V
.'•• '.-
" ; • • '. -
OS
LJNDWATEo
U)
SOIL
CLASS
(USCS)
ML
ML/CL
TRENCH T 8
ELEV. (MSL.) 250 DATE COMPLETED 11/3/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVTUM
Stiff, dry, pale yellowish brown, SILT, some fine
sand, rootlets, soil carbonate
SANTIAGO FORMATION
Stiff, dry, light brown, light olive gray, light olive
brown, predominantly Sandy
SILTSTONE/CLAYSTONE, beds less than 1/4"
thick, Silty SANDSTONE interbedded; beds
generally horizontal in places
TRENCH TERMINATED AT 7 FEET 'RATIONSTANCEJS/FT.)§^3
Q. ^
>•
Q «
>b
Q
Kmjjj
O -5P
^ n
CJ
Figure A-63, Log of Trench T 8 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
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 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
- 2 -
- 4 -
-
SAMPLE
NO.
T9-1
T9-2 ITHOLOGY_!
) ) )( ( (
•fe't*
*!_' 1* t
:4£
• ']' r
*» *J*"*1 OUNDWATERDCU)
SOIL
CLASS
(USCS)
ML
SM
TRENCH T 9
ELEV. (MSL.) 155 DATE COMPLETED 11/3/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
_. TOPSOBL r
\ Stiff, dry, moderate yellowish brown, SILT, j
\ abundant rootlets /
SANTIAGO FORMATION
Medium dense, dry, yellowish gray, fine, Silty
SANDSTONE, slightly weathered, random
fractures less than 2" apart, carbonate lined
\
-Horizontal contact at 3 feet l~
-Becomes very pale orange, Silty, fine to medium /
SANDSTONE /
TRENCH TERMINATED AT 5 FEET ITRATTONISTANCEDWS/FT.)LU^CDQ- x^DENSITY.C.F.)oi^Q
/%
OZ*'
Pfc
H^
°Z
O
Figure A-64, Log of Trench T 9 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
... DISTURBED OR BAG SAMPLE ikl ... CHUNK SAMPLE JL ... 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
- 2 -
- 4 -
- 6 -
SAMPLE
NO.
T10-1
£
O
O
H
1
'•.'••••I
ce
E
Q
OCgCO
SOIL
CLASS
(USCS)
SC
ML/SM
TRENCH T 10
ELEV. (MSL.) 260 DATE COMPLETED 11/3/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOIL/COLLUVIUM
Stiff, moderate yellowish brown, Clayey, fine to
medium SAND
SANTIAGO FORMATION
Stiff, dry to damp, fine, Sandy SILTSTONE/Silty
SANDSTONE, upper 6" cemented and fossiliferous;
underlain by 6" thick, dark yellowish orange, bed
dipping approx. N-S/5W, beds below are very pale
orange and between 6" and 1' thick, moderately
weathered, soil carbonate
TRENCH TERMINATED AT 8 FEET
|||
|<s §
0. ^
-JENSITYC.F.)o
a'"'
'"z
= 0u
-
Figure A-65, Log of Trench T 10 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL
H ... DISTURBED OR BAG SAMPLE
... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
i ... 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.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
- 4 -
- 6 -
_ _
0O
- 10 -
12
SAMPLE
NO.
CDO
d
H
?#
''.f'..*t
l't'"'i
H'Hf
'•[•v::f':-::t
Q:U
<T
i
fy
CD
SOIL
CLASS
CUSCS)
sc
ML/CL
SM
TRENCH T 11
ELEV. (MSL.) 225 DATE COMPLETED 11/3/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOIL
Stiff, dry, moderate yellowish brown, Clayey, fine
~\ to medium SAND /~
SANTIAGO FORMATION
Stiff, damp, light olive gray,
SILTSTONE/CLAYSTONE, highly weathered,
grades downward to fine, Silty SAND below 4 feet
, -Bedding plane/contact stained dark yellowish
v orange dip apgrox. N45W/15SW /
Medium dense, dry, very pale orange, fine to
medium Silty SANDSTONE
-Bedding plane dips parallel to above
TRENCH TERMINATED AT 12 FEET
ZLU~
ii (_) "
l|S
LU^JO
LTJ^CCL^-v^
—
~
5-
J J§ ^^
8li° *^^a
~
UJ
&HUJL_
= 0CJ
, Figure A-66, Log of Trench T 11 LCG
SAMPLE SYMBOLS Q ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
ii ... DISTURBED OR BAG SAMPLE B ... 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.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
- 2 -
- 4 -
- 6 -
-
- 8 -
- 10 -
SAMPLE
NO.LITHOLOGY/ ' e /
', //
</;'/ / //rft
'//'
;-'."';
. . - ' ,
•_•'.-..;
•.•.-.-:GROUNDHATERSOIL
CLASS
(USCS)
ML/CL
ML
TRENCH T 12
ELEV. (MSL.) 165 DATE COMPLETED 11/3/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, dry, brownish black, SILT/CLAY, abundant
rootlets below 3 feet, abundant soil carbonate,
becomes dusky yellow, "punky", transitioning to
formational below 5 feet
SANTIAGO FORMATION
Stiff, dry to damp, light olive gray, Sandy
SILTSTONE, massive, scattered, random,
discontinuous closed joints
TRENCH TERMINATED AT 12 FEET ENETRATIONRESISTANCEBLOWS/FT.)0- ^
-
Id
5-ia:a MOISTUREONTENT Wu
Figure A-67, Log of Trench T 12 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE E ... 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
- 2 -
- 4 -
- 6 -
- . -
- 8 -
SAMPLE
NO.
>-CD
ITHOLO//X
''. //•
///'-
/ '''/
>//
%4/fy
%MW
W$W
ffivfy
%*/$/'wk,
txu
OUNDUAvfe
SOIL
CLASS
(USCS)
CL/ML
CL
TRENCH T 13
ELEV. (MSL.) 140 DATE COMPLETED 11/3/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, dry, brownish black, SILT/CLAY, fine roots
-Becomes dusky yellow, "punky", abundant soil
carbonate
SANTIAGO FORMATION
Stiff, dry to damp, light olive gray (mottled dark
yellowish orange to 7 feet) Sandy CLAYSTONE,
massive, scattered, random, discontinuous closed
joints
TRENCH TERMINATED AT 9 FEET
§LU^
H^Kt-<pu-<E£\<£fn<"h-f^3
S^mCLn-'^/
.
>-
fc^ .go
o:^a
^
isQ^"TZ
O
Figure A-68, Log of Trench T 13 LEG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE E ... CHUNK SAMPLE 3L ... WATER TABLE OR SEEPAGE
NOTE: THE LQG 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
- 2 -
- 4 -
- 6 -
_ —
- 8 -
- 10 -
- 12 -
SAMPLE
NO.
j.LITHOLOG> -
- j
y
''/.
'/(
/•'s
•y
^' /
•/
/
'/
y,:/-x
x./^
:^jj
a
GROUNDMA1T
SOIL
CLASS
(USCS)
ML/CL
CH
-
TRENCH T 14
ELEV. (MSL.) 95 DATE COMPLETED 11/3/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, dry to damp, dark yellowish brown, Sandy
SILT/CLAY
-Becomes moist, medium stiff
Wet, soft
-Becomes saturated, very soft
SANTIAGO FORMATION
Firm, wet to saturated, pale olive CLAYSTONE ,
~\ highly weathered, punky /~
TRENCH TERMINATED AT 13 FEET
STANDING WATER AT 13 FEET
CAVING BELOW 8 FEET
2 _ENETRATIORESISTANCEBLOWS/FT.u. IJ-^-'
-
-
J_
j£
^^ •
^^ ft
a MOISTUREONTENT <Ku
Figure A-69, Log of Trench T 14 LCQ
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL
H ... DISTURBED OR BAG SAMPLE
C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
B ... CHUNK SAMPLE JL ... 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
- 2 -
-
- 6 -
- —
SAMPLE
NO.
5_
CD
LITHOLO^/?'/'
'/•
^A/ /
:*&:'.'tv'.fi'<"'[' •['
• •]• r
'&<•[•
ccu
GROUNDUASOIL
CLASS
(USCS)
CL
SM
TRENCH T 15
ELEV. (MSL.) 115 DATE COMPLETED 11/3/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, humid, dark gray-brown, Sandy CLAY, with
some silt
-Very moist, soft, with discontinuous slickensided
day seams inclined out-of-slope 10 - 20 desrees
\ with calcium carbonate /
SANTIAGO FORMATION
Very dense, damp, light tan-brown, Silty, fine
SANDSTONE
-Bedding laminated, 2-4" beds at N30W, 10SW
TRENCH TERMINATED AT 7.5 FEET
Z /-\r- \ Lll .ENETRATItJESISTANCBLOWS/FTQ- ^
>.te2 ' .go
>b
a
^MOISTUREONTENT OCJ
Figure A-70, Log of Trench T 15 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL
H ... DISTURBED OR BAG SAMPLE
C ... STANDARD PENETRATION TEST
E ... 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
- 4 -
-
- 6 -
- 8 -
SAMPLE
NO.
CDO
O
1—H_l
^/:,''/•//
111
VM0/
VMW
V04&* »,
*
t *t
Of
<c
3
O
SOIL
CLASS
(USCS)
CL
CL
SP
TRENCH T 16
ELEV. (MSL.) 120 DATE COMPLETED 11/3/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOIL
Stiff, humid, dark gray-brown, Sandy CLAY
SANTIAGO FORMATION
Very stiff, moist, olive-brown, very Silty
CLAYSTONE
~
-Becomes hard
-Near-horizontal contact
Dense, damp, light tan, fine SANDSTONE,
non-cohesive when disturbed
— \ -Slightly cemented /~
TRENCH TERMINATED AT 9 FEET
§LU^H"H
£«^T
fa\
S^mo, "-•^
>-
1^
^ •
a&0
~
gS
HL_
°Z
o
Figure A-71, Log of Trench T 16 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
® ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE T. ... 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
- 2 -
-
- 4 -
- 6 -
-
- 8 -
SAMPLE
NO.
COO
4
H_1
x/*y-/\./•/
§
'/'
/>;
•' '/<
enu
<E
3
OaCD
SOIL
CLASS
(USCS)
CL
ML/CL
TT1T7*X.T/""'1TT m •+ P*TRENCH T 17
ELEV. (MSL.) 135 DATE COMPLETED 11/3/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Soft to stiff, moist, dark brown, Sandy CLAY
-With some silt
-Becomes very moist
SANTIAGO FORMATION
Very stiff to hard, moist, olive-brown, very
Clayey SILTSTONE, moderately weathered and
fractured, blocky
-Bedding N-S, 10W (hematitic layer)
TRENCH TERMINATED AT 9 FEET
g^H^K
fe|t£to§
gLUJjj
Q- ^
t
H-
*±WcJCJ .
CK^a
~
ce^
t-^
ML^
= 0u
Figure A-72, Log of Trench T 17 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE E ... CHUNK SAMPLE X ... 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
- 4 -
-
- 6 -
SAMPLE
NO.LITHOLOGYX/
/•/;ill
YMffiliiP
Hi GROUNDUATERSOIL
CLASS
(USCS)
CL
CL
TRENCH T 18
ELEV. (MSL.) 145 DATE COMPLETED 11/4/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOIL
Stiff, humid, dark brown, Sandy CLAY
SANTIAGO FORMATION
Hard, damp, olive-gray, Silty CLAYSTONE
-Massive, with blocky fractures
TRENCH TERMINATED AT 7 FEET ENETRATIONRESISTANCEBLOWS/FT.)CL ^
-
-
H-gu!
go
5*Q MOISTUREONTENT <X>o
-
Figure A-73, Log of Trench T 18 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL
H ... DISTURBED OR BAG SAMPLE
C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
B ... CHUNK SAMPLE f. .,. 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
- 2 -
- 4 -
- 6 -
- 8 -
SAMPLE
NO.LITHOLOGYy^
/•/
•7 '/
/'/
•'/•
V:/
fy,/'/
'%%$
vftwY/7///&.GROUNDWATERSOIL
CLASS
CUSCS)
CL
CL
TRENCH T 19
ELEV. (MSL.) 160 DATE COMPLETED 11/4/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Soft to stiff, very moist, dark brown Sandy CLAY,
with discontinuous random slickensided soil
fractures; dipping 30-45 degrees out-of-slope
(slope creep?)
.
- -1-2' transition to massive approx horizontal _
\ contact /
SANTIAGO FORMATION
Stiff to very stiff, very moist olive brown, Sandy ,_
\ CLAYSTONE /
\ -Very weathered and fractured /
TRENCH TERMINATED AT 9 FEET ENETRATIONRESISTANCEBLOWS/FT.)Q_ **"*s RY DENSITY(P.C.F.)Q MOISTUREONTENT (.y.)CJ
Figure A-74, Log of Trench T 19 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE 3C ... 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
- 2 -
- 4 -
"" ~™
- 6 -
~~ —
SAMPLE
NO.
to
LITHOLO/;/-
</
//:/
fy,
/:/.
/y
//
W$/•%%%
Q£Li
GROUNDWASOIL
CLASS
(USCS)
CL
CL
TRENCH T 20
ELEV. (MSL.) 160 DATE COMPLETED 11/4/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, moist, dark brown, Sandy CLAY
-Becomes soft, very moist
_ -6-12" transition to irregular, near-horizontal _
\ contact /
SANTIAGO FORMATION
~\ Very stiff, very moist, olive brown, Silty f~
\ CLAYSTONE (very weathered) /
TRENCH TERMINATED AT 9.5 FEET
SLJJ^ENETRATK*ESISTANCBLOWS/FTQ.'^-s^
—
>
H~
§0
a
/^.MOISTUREONTENT Oa
Figure A-75, Log of Trench T 20 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE T. ... 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
- 2 -
-
- 4 -
- 6 -
- 8 -
1U
SAMPLE
NO.LITHOLOGY/j/vv
A/yCA/yy
/yyy
w/
/ yj /
' ?
/ / *
' • / 1
','/''.GROUNDWATERSOIL
CLASS
(USCS)
CL
ML-CL
TRENCH T21
ELEV. (MSL.) 117 DATE COMPLETED 11/4/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, moist, dark gray-brown, Silry CLAY, with
some sand
-Becomes soft
SANTIAGO FORMATION
Stiff to very stiff, moist, light olive to brown, very
Clayey SILTSTONE to CLAYSTONE
-Very weathered
TRENCH TERMINATED AT 10 FEET ENETRATIONJESISTANCEBLOWS/FT.)O."-^
-RY DENSITY(P.C.F.)a MOISTUREONTENT (.'/.)o
Figure A-76, Log of Trench T 21 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
ii ... DISTURBED OR BAG SAMPLE G ... CHUNK SAMPLE T. ... 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
- 2 -
- 4 -
- 6 -
- 8 -
- 10 -
- 12 -
- 16 -
18
SAMPLE
NO.
5.LITHOLOGt
/yyy/yVx/l/f/ly/yyy
A/A/i/j/i/
y'l/L/iy
/yVy/////yyyA/yy'YyyA/Vy
/KXK/l/Vx/yyy
/y/ymmf
' y -/
/•/y/.,
ceUl
GROUNDUA1=
SOIL
CLASS
(USCS)
CL
ZL-ML
TRENCH T 22 -
ELEV. (MSL.) 113 DATE COMPLETED 11/4/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
ALLUVIUM
Stiff to very stiff, damp, dark gray-brown, Sandy
CLAY, with some silt, root-voids, rootlets,
burrows
-Becomes massive
>
-Becomes very stiff, moist, medium brown-olive,
very Silty CLAY, with little root-voids, burrows
-Massive
TERRACE DEPOSIT
Very stiff, moist to wet light olive to brown, very
Silty CLAY to Clayey SILT
-Seepage at 15.5 feet
TRENCH TERMINATED AT 18 FEET
"Z. r^ENETRATIORESISTANCEBLOWS/FT.Q_ ^
-
-
_
-
>_
H
Q
^MOISTUREONTENT (*CJ
Figure A-77, Log of Trench T 22 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
& ... DISTURBED OR BAG SAMPLE K ... CHUNK SAMPLE T. ... 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
(J
- 2 -
- 4 -
- 6 -
- 8 -
-
- 10 -
-
- 12 -
- 14 -
—
- 16 -
SAMPLE
NO.
T23-1
T23-2 THOL06YH_J
X/^
/'/'
•/ '/•/•'/
- /•
//
0,l-!-l-•i- 1 -iLl
-T-I-• H/
•j/t ~\/A -i/fi/i i//i y\
'$$
Av\
W
n*LJNDWflTEo
•<3
=
SOIL
CLASS
(USCS)
CL
SM
CL
TRENCH T 23
ELEV. (MSL.) 105 DATE COMPLETED 11/4/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
ALLUVIUM
Stiff to very stiff, humid, dark gray-brown, Sandy
CLAY
-Numerous root-voids, rootlets, massive
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 •RATIONSTANCEIS/FT.)Lu^iiD- v
-
~
-
-
_
-
~
_
>•
|2
u m
Q&Q
114.3
ujS
Hz
ML
gg
o
10.8
Figure A-78, Log of Trench T 23 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE f. ... 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
- 2 -
- 4 -
_ v
- 6 -_ _
- 8 -
- 10 -
—
- 12 -
- 14 -
SAMPLE
NO.
T24-1
T24-2
T24-3
T244
5_
U)LITHOLO•Y •/' •/7s'/y-
'/'y-
f /
'/'
/%
('//••
'-/./'
^- /
'•//
ty/
%
'$'/.'
$>
t^
£GROUNDUASOIL
CLASS
(USCS)
CL
SC
TRENCH T24
ELEV. (MSL.) 126 DATE COMPLETED 11/4/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
_, TOPSOIL _
\ Stiff, humid, dark gray-brown, Sandy CLAY /
TERRACE DEPOSIT
Medium dense, damp, light reddish-brown,
Clayey, fine SAND
-Calcium carbonate linings
-Massive with indistinct lenses of sandy or silty
clay, numerous root-voids and calcium
carbonate-lined fractures, scattered carbon
fragments and pisolites of iron oxide
-Calcium carbonate linings
TRENCH TERMINATED AT 15 FEET
z _£z HI
ENETRATICJESISTANCBLOWS/FT£X_ "-\^
-
^_
H~gu!
^^ •
>Q-
a
112.5
116.3
f^MOISTUREONTENT OCJ
7.9
11.5
Figure A-79, Log of Trench T 24 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE 1. ... 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
- 2 -
- 4 -
- 6 -
- 8 -
-
- 10 -
- 12 -
14
SAMPLE
NO.
-
._LITHOLOG'/ '/
• 7-/-/
./ •/
'/'/
••/•
y.,
JJ//:/•/•/ '/• /•
//•/./
W&,
YX%$/
ceUJ
GROUNDUAlSOIL
CLASS
(USCS)
CL
CL
CL
TRENCH T 25
ELEV. (MSL.) 137 DATE COMPLETED 11/4/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVTUM
Very stiff, damp to moist, dark gray-brown, Sandy
CLAY
-Massive, with root-voids, rootlets
TERRACE DEPOSIT
Very stiff, moist to very moist, light brown, Sandy
CLAY
-Massive, with root-voids
-Irregular, near-horizontal contact
SANTIAGO FORMATION
Stiff to very stiff, moist, light olive, very Silty
^i CLAY STONE r^
\ -Very fractured and weathered /
TRENCH TERMINATED AT 14 FEET
•» _ENETRATIORESISTANCEBLOWS/FT.Q_"-~
V.
|2
Q MOISTUREONTENT (Xu
Figure A-80, Log of Trench T 25 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE T. ... 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
- 2 -
- 4 -
- 6 -
- 10 -
-
- 12 -
- 14 -
SAMPLE
NO.
CD
LITHOLO^/:,/•///:/
YA
'm
"yy
//•'//•
/./
^ /'
enjj
GRQUNDWASOIL
CLASS
(USCS)
CL
CL
TRENCH T 26
ELEV. (MSL.) 137 DATE COMPLETED 11/4/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
ALLUVIUM
Stiff, moist, dark olive-brown, Sandy CLAY, with
some silt, root-voids and rootlets
TERRACE DEPOSIT
Stiff to very stiff, moist, light brown, very Sandy
CLAY
TRENCH TERMINATED AT 14 FEET
SLU~ENETRATKIESISTANCBLOWS/FT.Q_ v^
—
—
—
>-
|j
Q
^MOISTUREONTENT Vu
Figure A-81, Log of Trench T 26 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
H ... 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 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
- 4 -
- 6 -
- 8 -
- 10 -
SAMPLE
NO.
T27-1
T27-2 THOLOGYH
ty;
y./s,
ftH
„JNDWATEa:CD
SOIL
CLASS
(USCS)
CL
SC
CH
SC
TRENCH T 27
ELEV. (MSL.) 146 DATE COMPLETED 11/5/99
EQUIPMENT TRACKHOE ID 555 24"
MATERIAL DESCRIPTION
TOPSOBL
Stiff, humid, dark gray-brown, Sandy CLAY
TERRACE DEPOSIT
Medium dense, damp, reddish-brown, very Clayey,
fine SAND, massive, blocky, with calcium
carbonate,- mottling
-Sheared bedding clay seam; N30W, 25SW
Soft to stiff, very moist, light olive, Silty plastic
CLAY
•• ^ -Numerous, slickensided seams, very fractured t
f •
Medium dense, damp, light brown, very Clayey,
very fine SAND
~v -Massive, blocky, with 1/4"+- charcoal fragments, r~
\ with some silt /
TRENCH TERMINATED AT 11 FEET
in
LLJ^CD
fc
§0
a
108.2
Ifei§
o
19.8
Figure A-82, Log of Trench T 27 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... 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 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
U
- 2 -
- 6 -
- 8 -
- 10 -
12
- 14 -
16
SAMPLE
NO.
CDO
LITHOL•-'!-'
' -L 1
-f [f
"1 {-
•V-
//;
'sy^
//
1
•]-\''.'
• 1 '
'•] ^:-~'\- "' '
jj
<r
GROUNDUSOIL
CLASS
(USCS)
M-GM
CL
SM
TRENCH T28
ELEV. (MSL.) 93 DATE COMPLETED 11/5/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
FELL
Loose, dry to humid, light brown, Silty, Gravelly,
fine SAND, with oversize concrete, wood, trash
ALLUVIUM
Stiff, moist, dark gray-brown, Sandy CLAY
-Massive, with root-voids, rootlets
TERRACE DEPOSIT
Medium dense, moist, light brown, Silty, fine
SAND
-Very weathered, with some clay
-Becomes very dense, damp, and cemented
TRENCH TERMINATED AT 16 FEET
Zj^j^N^"{ CJ "ENETRAT](ESISTANBLOWS/Fl0_<J-^/
-
-
-
_
>•
\~\^\
§0
Q
^
UKX!MOISTURONTENTo
-
Figure A-83, Log of Trench T 28 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE 3C ... 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
- 2 -
- 4 -
- 6 -
- 10 -
- 12 -
-
- 14 -
SAMPLE
NO.
>•
o
0
I—H_J
'/ "/
• •/•
K
^
i~/~ ' /'/
fy.
'fy
-:1;)'-"
1-L 1•\ \-\
^•3.
z
^QLCO
SOIL
CLASS
(USCd)
CL
sc
SM
rrvri TTI T^Ty^TX rn /* r*TRENCH T 29
ELEV. (MSL.) 90 DATE COMPLETED 11/5/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, damp, dark gray-brown, Sandy CLAY
-Massive, with root-voids and rootlets
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, Silty,
fine to medium SAND, with some clay, fine
root-voids
TRENCH TERMINATED AT 15 FEET
z _
°CJ *
III
ffijjiai
-
-
i-
j_
M~
fcL4 m
>b
Q
s^u^fo:^is
=1CJ
„ Figure A-84, Log of Trench T 29 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE f. ... 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
- 2 -
-
SAMPLE
NO.
-
>CDo
O
H_l
•:[:]:£
if?!
•:[:|::[;
K
I
a
SOIL
CLASS
(USCS)
SM
TRENCH T30
ELEV. (MSL.) 120 DATE COMPLETED 11/5/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
SANTIAGO FORMATION
Very dense, damp, light brown-tan, Silty, medium
to coarse SANDSTONE
-Massive
TRENCH TERMINATED AT 3 .5 FEET
§LU~ScJi_!H Sir—i-Su.<c£\ozfctn
'"H3
§UJ^Q. "-v^
^^|s
o:1^Q
UJ^'
H}£g|
o
Figure A-85, Log of Trench T 30 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE Ekl ... CHUNK SAMPLE f. ... 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
- 2 -_
- 4 -
- fi -
SAMPLE
NO.LITHOL06Y^S'/./ •/
'/:/
//
-/ :/
•fcjj-t:
%MH*
•£vt-.vKr.GRQUNDWATERSOIL
CLASS
(USCS)
CL
SM
TRENCH T31
ELEV. (MSL.) 115 DATE COMPLETED 11/5/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVTOM
Stiff, moist, dark gray-brown, Sandy CLAY, with
root-voids, rootlets, burrows
-Becomes soft, very moist
_^ -Irregular, N-inclined contact ^_
SANTIAGO FORMATION
Very dense, damp, light brown to tan, Silty, coarse
SANDSTONE
TRENCH TERMINATED AT 8 FEET ENETRATIONRESISTANCEBLOWS/FT.)Q_<^-\S
-RY DENSITY(P.C.F.)a MOISTUREONTENT <«a
-
Figure A-86, Log of Trench T 31 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
il ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE Y. ... 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
- 2 -
- 4 -
—
- 6 -
- 8 -
- 10
- 12 -
-
- 14 -
- 16
SAMPLE
NO.
>•CDo
O
H_l
//:/•/•//:/
Y/,' y
w/y
%
y/ft
:S&/
.[//>•
S-/7
t£LU
<r
o
3
-
SOIL
CLASS
(USCS)
CL
SC
npT*T^X.T^*TT rri ^^TRENCH T 32
ELEV. (MSL.) 80 DATE COMPLETED 11/5/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
ALLUVIUM
Stiff, moist, dark gray-brown, Sandy CLAY
-Massive, with rootlets, root-voids
Medium dense, very moist, reddish-brown, very
Clayey, medium SAND, with scattered angular
volcanic gravel-clasts near base
-Strong seepage at 14 feet, becomes gravelly
TRENCH TERMINATED AT 16 FEET
ZI_LI'-.
Sink's
M ^O
u™a0- ^
-
-
j_
h-^
1^;L_J ^
^— ^L*
Q
/^U*^
*~z
^_
o
Figure A-87, Log of Trench T 32 LCG
SAMPLE SYMBOLS ... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE JL ... 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
- 2 -
- 6 -
- 8 -
SAMPLE
NO.
5_ .LITHOLOC%0
•////
fy/p*H
*r *j* v>m*.r.vi':-M-x.vXr.•XiX-
*T T
'•[•;'T
K
GROUNOUA1SOIL
CLASS
(USCS)
CL
SM
TRENCH T33
ELEV. (MSL.) 90 DATE COMPLETED 11/5/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, humid to damp, dark gray -brown, Sandy
CLAY, with scattered angular volcanic
gravel-clasts
SANTIAGO FORMATION
Very dense, damp, light brown to tan, Silty,
medium SANDSTONE
-Massive to faint bedding layers
-Bedding; N50W, 10SW
TRENCH TERMINATED AT 9 FEET
^*
z _ENETRATIORESISTANCEBLOWS/FT.0- ^
>_
fcgo
d MOISTUREONTENT (.'/.u
<u
Figure A-88, Log of Trench T 33 LCQ
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE 3C ... 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
- 2 -
- _
- 4 -
- 6 -
—
- 8 -
- 10 -
- 12 -
- 14 -
SAMPLE
NO.
.,_LITHOLOC'//:
'/
-7 '/
''•/:/
"//
/^/y
^§m/ /-^'&-
^x'X-^>
Q
GROUNDWA1SOIL
CLASS
(USCS)
CL
SC
TRENCH T34
ELEV. (MSL.) 105 DATE COMPLETED 11/5/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
ALLUVIUM
Stiff to very stiff, damp, dark gray-brown, Sandy
CLAY
-Massive, root-voids and rootlets
-Becomes more sandy, moist, brown
TERRACE DEPOSIT
Medium dense, moist, reddish-brown, very Clayey,
medium to coarse SAND
-Becomes gravelly at 14 feet, with subangular
volcanic rock
TRENCH TERMINATED AT 15 FEET
REFUSAL ON ROCK
Z s*.ENETRATIOJESISTANCEBLOWS/FT.0- '-'
^_
|2
tt!w
Q
_MOISTUREONTENT <JCo
Figure A-89, Log of Trench T 34 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST I... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE K ... CHUNK SAMPLE 3E ... 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
- 2 -
- —
- 4 -
- 6 -
- 8 -
- 10 -
-
- 12 -
- 14 -
SAMPLE
NO.
CDO
O
H_]
' y •/-/ s
•ikvt'
#»:
vlj* *
:^|
$if
j*» •XY'£'•M«v
rl
•:f:k
*L*J* f* r * *[;Xf.;t
:;[;];']
•xj!-f*«r-j«%
II
3.u
z
Ois
SOIL
CLASS
(USCS)
CL
CL
SM
r 11 f > TnTWTrf^T'T T* ^ ^TRENCH T 35
ELEV. (MSL.) 120 DATE COMPLETED 11/5/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
^ TOPSOIL
\ Stiff, dry, dark brown, Sandy CLAY /
SANTIAGO FORMATION
Firm or very stiff, damp, light olive, very Silty
CLAYSTONE
-Massive, highly fractured and weathered
i
-Randomly oriented, discontinuous clay seams
-Contact near-horizontal
Very dense, damp, light brown, Silty, fine
SANDSTONE
TRENCH TERMINATED AT 15 FEET
Zaj~
git
UJHO
S^mQ- "^
-
-
5-
fcgu
K^Q
^
^K
^^ CDO
Figure A-90, Log of Trench T 35 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL 13 ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE JL ... 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
- 2 -
- 4 -
- 6 -
SAMPLE
NO.THOLOGYa
|
«* / **
« //• /
ii*
cru
i
gCD
SOIL
CLASS
(USCS;
sc
ML
niT*T^T^.T/*^iTX nn ^ A"TRENCH T 36
ELEV. (MSL.) 175 DATE COMPLETED 11/5/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOIL
Loose, damp, dark brown, Clayey, medium SAND
_^ -Clean sand near contact ^_
SANTIAGO FORMATION
Very stiff, firm, moist, reddish-brown to olive,
very Clayey SILTSTONE
-Very fractured and weathered, with shallow
creep-fractures and surficial slumps
-Bedding near-horizontal
.^ -Becomes Very hard, moist, light olive _
\ -Blocky, massive /
TRENCH TERMINATED AT 8 FEET
SLU"^O Jj •
Qm l" \Q— f^\ ^^
*£• 1 1 [ <_J
Q- ^1ENSITYC.F.)Q
UJ^f»*
^Z
ElCJ
Figure A-91, Log of Trench T 36 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST
ii ... 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 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
- 2 -
- 6 ~
- 8 -
- 10 -
SAMPLE
NO.
-
5_
CDO
O
H-
J
/^<s
y,
?l
'-/'/'//'
%&
x'^vx-j'J.
KLU
OUNDWA13
SOIL
CLASS
(USCS)
CL
-
sc
SM
TRENCH T37
ELEV. (MSL.) 140 DATE COMPLETED 11/5/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, moist, dark gray-brown, Sandy CLAY
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 ^_
SANTIAGO FORMATION
SANDSTONE, massive /
TRENCH TERMINATED AT 11 FEET
Z /-s°y •
Lu^mCL "-"w
-
>.DENSIT>.C.F.)£~Q
^
0:^
H-^
= §U
Figure A-92, Log of Trench T 37 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE C ... CHUNK SAMPLE f. ... 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
ft DEPTH
IN
FEET
- 2 -
- 4 -
- 6 -
- 8 -
-
- 10 -
->
- 12 -
- 14 -
SAMPLE
NO.
v
CD
LITHOLO^/:
/'/'
Vv
Py
/?•//:/
• /•/.y/ ./•/•//•/
//
v^v
wfy
ceUJ
GROUNDWASOIL
CLASS
CUSCS)
CL
CL
TRENCH T38
ELEV. (MSL.) 125 DATE COMPLETED 11/8/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COIXUVIUM/LANDSLIDE DEBRIS
Stiff, moist, dark brown, Sandy CLAY, with clasts
of sandstone, porous, with root-voids
-Very irregular, transitional contact, becoming
very moist
-Becomes soft, very moist, mottled light brown to
olive, very Sandy CLAY, with angular chunks of
Santiago formation, sandstone; disturbed, mixed
textures
-Very irregular, wet, plastic, clay seam
SANTIAGO FORMATION
\ Stiff, very moist, light olive, Silty CLAYSTONE /
\ -Very weathered and fractured /
TRENCH TERMINATED AT 15 FEET
Z ^-<SLU .PENETRATKRESISTANC(BLOWS/FT-
-
5_
H
a
-
^MOISTURECONTENT VFigure A-93, Log of Trench T 38 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE f. ... 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
<M DEPTH
IN
FEET
- 2 -
-
- 4 -
- 6 -
_
- 8 -
- 10 -
SAMPLE
NO.
5.
H_1
^/',
/'/
'/•
//•
r
s'7 /.
X/
/'//•/
>yffl/ywIy//f7//
CZLU
<r3
0
CD
T•=•
SOIL
CLASS
(USCS)
CL
:L-CH
TRENCH T39
ELEV. (MSL.) 120 DATE COMPLETED 11/8/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
LANDSLIDE DEBRIS
Stiff, damp, dark gray-brown, Sandy CLAY
-Porous, with rootlets, root-voids
-Irregular contact
-Becomes soft, wet, reddish-brown,
Sandy-Gravelly CLAY, with disturbed texture
(brecciated)
-Strong seepage
^ -Very irregular, plastic clay seam contact (caving) /-* A i *£
SANTIAGO FORMATION
\ Stiff, very moist, light olive, Silty CLAYSTONE j
\ -Very fractured and weathered /
TRENCH TERMINATED AT 11 FEET
z /^°o •i||
mQcaCL. ^^
^.
l-^
l^j
o:~Q
^_
iij ^5
1|
§0u
Figure A-94, Log of Trench T 39 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL
ii ... DISTURBED OR BAG SAMPLE
C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
B ... CHUNK SAMPLE X ... 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
- 2 -
—
- 4 -
- 6 -
- 8 -_
~ 10
- 12 -
SAMPLE
NO.
CDo
o
H
?/^r f r~ j i .
k-f-L 1
r
"4"•J {-f/j/j/b
/yyy
A/A/yyy/yyy/y/y
WiW/
WWW'VS/Y/r'
Q
<T
GROUNDSOIL
CLASS
(USCS)
SC
SM
CL-CH
CL-CH
TRENCH T40
ELEV. (MSL.) 155 DATE COMPLETED 11/8/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOIL
TERRACE DEPOSIT
Medium dense, damp, reddish-brown, Gravelly,
Silty coarse SAND
-Massive
_^ -Near-horizontal depositional contact ^_
LANDSLIDE DEBRIS
Soft, very moist to wet, light olive-brown, Silty
CLAY
-Disturbed, with numerous clay seams, chunks of
Santiago formation and Jsp
-1-2" remolded clay seam with slickensides* N85W /—
\ 40S /
SANTIAGO FORMATION
—i Stiff very moist light olive Silty CLAYSTONE /—
\ -Very fractured and weathered /
TRENCH TERMINATED AT 13 FEET
ZlU~Soij
ENETRAlJESISTABLOUS/FQ_<^-\S
>-
tl'™*r~1 .
Q:^Q
^
1 (I »^
K^
">5
°£=iU
Figure A-95, Log of Trench T 40 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST
H ... DISTURBED OR BAG SAMPLE B ... CHUN< 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
- 2 -
- 4 -
- 6 -
_ _
-
- —
- 10 -
12 -1
SAMPLE
NO.
5_LITHOLO/x
/f/
//
/Q/
*/}
w.
lilv^M>
iipilP
'/0Y%/
w
a:jj
GROUNDUAT~
SOIL
CLASS
(USCS)
GC
CL-CH
TRENCH T 41
ELEV. (MSL.) 145 DATE COMPLETED 11/8/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
LANDSLIDE DEBRIS
Soft, very moist, light brown to olive, very coarse,
Clayey boulder GRAVEL, with subrounded 6 to
24" volcanic boulders
-Strong seepage _
-Very irregular contact, inclined southward /
SANTIAGO FORMATION
Stiff, wet, light olive, Silty CLAYSTONE
-Very fractured, weathered, with clay seams
TRENCH TERMINATED AT 12 FEET
z /•%ENETRATICJESISTANCBLOWS/FT.Q- w
—
„
-
>_
fcgo
a
^v
MOISTUREONTENT 0u
Figure A-96, Log of Trench T 41 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE i] ... CHUNK SAMPLE T. ... 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
_
- 2 -
- 4 -_
- 6 -
- 8 -
- 10 -
-
- 12 -
SAMPLE
NO.
CD
LITHOLO'-/ -V
•/
-/ '/
':/:/.
• /•
/?'/'
•/•
fy
gx
//
</:X-/
QLU
GROUNDWAI
SOIL
CLASS
(USCS)
CL
TRENCH T42
ELEV. (MSL.) 170 DATE COMPLETED 11/8/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
LANDSLIDE DEBRIS
Stiff, damp to humid, dark brown, Sandy CLAY
-Becomes soft to stiff, moist, light olive mottled
with reddish-brown, Silty CLAY, with scattered
angular volcanic clasts, disturbed, brecciated
texture
-Becomes very moist to wet
-Strong seepage, caving
-Remolded clay seam, N85W, 10S, approx. 2" thick
-Becomes stiff, wet, light olive-gray, Silty CLAY _
-May be very weathered Santiago Formation (?) /
TRENCH TERMINATED AT 12 FEET
Saj~ENETRATICJESISTANCBLOWS/FT.Q_"-w
-
12
go
Q
'•MOISTUREONTENT 0o
Figure A-97, Log of Trench T 42 ICG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL B ... STANDARD PENETRATION TEST
H ... DISTURBED OR BAG SAMPLE HI ... 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
- 2 -
- 4 -
"
SAMPLE
NO.
^LITHOLO^
•////
iP
H%//s*s/f
iHP
HH
S
GROUNDWASOIL
CLASS
(USCS)
CL
CL
TRENCH T43
ELEV. (MSL.) 200 DATE COMPLETED 11/8/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, moist, dark brown, Sandy, Gravelly CLAY,
with angular volcanic clasts
-Becomes light olive, very moist, more silty
-Discontinuous, out-of-slope slickensided clay
O^OTYIO"x. *• . , ,>^~
SANTIAGO FORMATION
Very stiff to hard, moist, light olive-gray, Silty
\ -Blocky, massive /
TRENCH TERMINATED AT 8 FEET
2 I'v
ENETRATICtESISTANCBLOWS/FT.Q_li-v/
^f.
|S
a
s^MOISTUREONTENT Vu
Figure A-98, Log of Trench T 43 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE 3C ... 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
- 2 -_
- 4 -
SAMPLE
NO.LITHOLOGY2/*^ /
//'y't
2/vy//
^T /
^
v t- <
"V^GROUNDWATERSOIL
CLASS
(USCS)
CL
TRENCH T44
ELEV. (MSL.) 230 DATE COMPLETED 11/8/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLirVTOM
Stiff, moist, dark red-brown, very Gravelly
CLAY, with angular clasts of volcanic rocks
-Irregular, downslope-inclined clay seam contact ^_
SANTIAGO PEAK VOLCANICS
Very weathered, light reddish-brown, weak
^i VULCANIC ROCK [^
\ -Very fractured, excavates to a clayey sand /
TRENCH TERMINATED AT 8 FEET
'..ENETRATIONRESISTANCEBLOWS/FT.)Q."-'-'RY DENSITY(P.C.F.)a MOISTUREONTENT (X)o
m
Figure A-99, Log of Trench T 44 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE & ... CHUNK SAMPLE X ... 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
- 2 -
- 6 -
- 8 -
- 10 -
- 12 -
SAMPLE
NO.
•
>-CDo
O
|—1
<y^/•/
'//A
7 '/•
. " •
. _ • .
'
IIill
-
enLU
^1
z
n
CD
SOIL
CLASS
(USCS)
CL
:L-ML
SM
nnTfcTPTWT/TTT Tl A fTRENCH T 45
ELEV. (MSL.) 220 DATE COMPLETED 11/8/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, damp, dark brown, Sandy CLAY
SANTIAGO FORMATION
Hard, damp, light olive to tan, Clayey SILTSTONE
to Silty CLAYSTONE
-Laminated beds ~ 1/2-2" thick
Very dense, damp, light tan to reddish-brown,
Silty, medium to coarse SANDSTONE, massive
TRENCH TERMINATED AT 13 FEET
Z ^N
°CJ *
<E^\
ti hH 7^LLI iX ^J
UJ^CQQ. w
^.
1—^
|u
f)
o:^a
_^
LLlJitr
HHifi
°2
O
Figure A-100, Log of Trench T 45 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
@ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE T. ... 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
•m
DEPTH
IN
FEET
- 4 -
-
- 6 -
SAMPLE
NO.LITHOLOGY'fy?/•/
'wSfo
yw%
W%7/
Hi GROUNDUATERSOIL
CLASS
(USCS)
CL
CL
TRENCH T46
ELEV. (MSL.) 215 DATE COMPLETED 11/8/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOIL
Stiff, damp, dark brown, Sandy CLAY
SANTIAGO FORMATION
Very stiff, moist, light olive, Silty CLAYSTONE,
very weathered, fractured, with random clay seams
TRENCH TERMINATED AT 7 FEET ENETRATIONRESISTANCEBLOUS/FT.)Q_"-<-"
-RY DENSITY(P.C.F.)Q
-MOISTUREONTENT «>0
„ Figure A-101, Log of Trench T 46 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE f. ... 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
- 2 -
-
- 4 -
- 6 -
SAMPLE
NO.LITHOLOGYy/:'/f~y•/ '/
''/:/-
£/*AJH GROUNDUATERSOIL
CLASS
(USCS)
CL
CL
TRENCH T47
ELEV. (MSL.) 207 DATE COMPLETED 11/8/99
EQUIPMENT TRACKHOE 3D 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, moist, dark brown, Sandy CLAY
SANTIAGO FORMATION
Stiff to very stiff, very moist, light olive, Silty
~X L.LA I o 1 LI IN L f
TRENCH TERMINATED AT 7 FEET ENETRATIONRESISTANCEBLOWS/FT.)D- ^
fego
ofQ MOISTUREONTENT <^)o
411
Figure A-102, Log of Trench T 47 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL
H ... DISTURBED OR BAG SAMPLE
E ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
B ... CHUNK SAMPLE f. ... 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
- 2 -
- 4 -
SAMPLE
NO.THOLOGYa
i
4 r- i,. i r- -
ce
UNDWATEi:CD
SOIL
CLASS
(USCS)
CL
TIT* T^Twr/^nrT TI >j r>TRENCH T 48
ELEV. (MSL.) 175 DATE COMPLETED 11/8/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOIL
Stiff, humid, dark brown, Sandy CLAY
SANTIAGO PEAK VOLCANICS
Very weathered, fractured, light red-brown, weak
\_ VULCANIC RUCK. /^
TRENCH TERMINATED AT 5 FEET •RATIONSTANCEJS/FT.)UlfnOZm-IUJ&GQa.cc^
fi-gul
go
^0^a
t~*
^
t"m
Q1-2zEou
_
Figure A-103, Log of Trench T 48 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE Jf. ... 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
- 2 -
£o
SAMPLE
NO.THOLOGYH
i;:[:&
'm
lH
rr.UNDWATExID
SOIL
CLASS
(USCS;
CL
SM
CL
TRENCH T 49
ELEV. (MSL.) 200 DATE COMPLETED 11/8/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOIL
Stiff, damp, dark brown, Sandy CLAY
SANTIAGO FORMATION
i Dense, damp, light red-brown, Silty, coarse /
\ SANDSTONE i
i -Near-horizontal bedding-contact /
Hard, damp, light olive, very Silty CLAYSTONE
-Very fractured and weathered, with calcium
~"\ carbonate linings /~
TRENCH TERMINATED AT 7.5 FEET 'RATIONSTANCEIS/FT.)UJiXOzW_jUJ^CQQ_Q->-'
-
Eh%L
£d° .>bDiw
Q
^x
UJ$jon
a)??HrotEQu
Figure A-104, Log of Trench T 49 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL G... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE T.... 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
- 2 -
-
- 4 -
"
- 6 -
SAMPLE
NO.LITHOLOGY^/:,
/?'/
./ •/
'mft/W/0&
tfv/YW
w/
vim,GROUNDWATERSOIL
CLASS
(USCS)
CL
CL
TRENCH T 50
ELEV. (MSL.) 175 DATE COMPLETED 11/8/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOIL
Stiff, humid to damp, dark brown, Sandy CLAY
SANTIAGO FORMATION
Hard, damp, medium to dark olive, Silty
CLAYSTONE
-Very fractured and weathered, massive
TRENCH TERMINATED AT 8 FEET ENETRATIONRESISTANCEBLOWS/FT.)Q- "-•>->RY DENSITY(P.C.F.)Q MOISTUREONTENT COCJ
-m
Figure A-105, Log of Trench T 50 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST I... DRIVE SAMPLE (UNDISTURBED)
0 ... DISTURBED OR BAG SAMPLE B ... 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.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
- 2 -
- 4 -
- 6 -
SAMPLE
NO.LITHOLOGY^/ /
//Q/
/ P/ /
/y
'%GROUNDWATERSOIL
CLASS
(USCS)
GC
TRENCH T 51
ELEV. (MSL.) 165 DATE COMPLETED 11/8/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, very moist, reddish-brown, Clayey GRAVEL
with boulders
-Massive, with mixture of rounded cobbles and
angular boulders of Jsp (18" +-)
TRENCH TERMINATED AT 7 FEET
REFUSAL ENETRATIONRESISTANCEBLOWS/FT.)So
Q MOISTUREONTENT (JOu
.11
<M
Figure A-106, Log of Trench T 51 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL HI ... STANDARD PENETRATION TEST I ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE K ... 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.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
- 2 -
_ _
- 4 -
-
- 6 -
- 8 -
- 10 -
- 12 -<
- 14 -
SAMPLE
NO.
CDO
o
1—H_1
\a '.''''•'.
'•.'•' 'ff'-'J--.
', •"." '.'•-
'.'"•.- •••"•!•&'
'**0- *.•""•"
•'&'••'.'$•
':':^:
'^.'••'•%
•&•••':>•'•y-^A
s|l
"••'•'.'-;'•
;:/.-' \'4V?'-.';.'-/.'.
••'I-!?'-:'-m:-?'-' •'::?•
o:u
r
3
3
J>
SOIL
CLASS
(USCS)
P /-*X/f-GM
T*TiTmw.T/^TT nn f\TRENCH T 52
ELEV. (MSL.) 137 DATE COMPLETED 11/8/99
EQUIPMENT TRACKHOE JTJ 555 24"
MATERIAL DESCRIPTION
FILL
Loose, humid to damp, light brown, Gravelly, fine
SAND with some silt
-Becomes loose, damp 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, alluvium
-Becomes very moist to wet
-Caving from 12 feet
TRENCH TERMINATED AT 15 FEET
0^^LJ ft •Hyi-si*£cn£2
UJHO
S^oQ. ^
_
>-
|2
Q •
te^o
^
llHp
§§u
Figure A-107, Log of Trench T 52 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST I... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE G ... 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.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
- 2 -
- 4 -
- 6 -
SAMPLE
NO.LITHOLOGY^'$//•
m
&•/ /*y^GROUNDWATERSOIL
CLASS
(USCS)
CL
CL
TRENCH T53
ELEV. (MSL.) 145 DATE COMPLETED 11/8/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, moist, dark brown, Gravelly-Sandy CLAY
SANTIAGO FORMATION
Hard, moist, light olive-brown, Gravelly-Sandy
CLAYSTONE, with angular clasts of volcanic
rocks
TRENCH TERMINATED AT 8 FEET ENETRATIONRESISTANCEBLOWS/FT. )Q_"-^
fc
go
a MOISTUREONTENT (X)CJ
m
Figure A-108, Log of Trench T 53 LCG
SAMPLE SYMBOLS D...SAMPLING UNSUCCESSFUL C
§1 ... DISTURBED OR BAG SAMPLE B
. . STANDARD PENETRATION TEST ... DRIVE SAMPLE (UNDISTURBED)
.. CHUN< SAMPLE . . 3C ... 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
- 2 ~
- 4 -
-
__ /;o
SAMPLE
NO.
CD
.ITHOLO%?
~/'.f/
'ffi'
^t
~\ t^ t*
S^f,/
V T~ •<
^
Q;U
IOUNDUACO
SOIL
CLASS
(USCS)
SC
TRENCH T 54
ELEV. (MSL.) 240 DATE COMPLETED 11/8/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOBL
Loose, humid, dark brown, Clayey SAND, some
silt
SANTIAGO PEAK VOLCANICS
Very weathered and altered, reddish-brown, weak
VOLCANIC ROCK
-Very fractured and hydrothennally altered,
excavates to a gravelly, clayey sand
TRENCH TERMINATED AT 8 FEET
Siu~ETRATIC3ISTANCOWS/FTul^ma. ^
>!cgo
tt^Q
~
||
E0CJ
Figure A-109, Log of Trench T 54 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
H ... 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
- 2 -
-
- 4 -
SAMPLE
NO.
CD
ITHOLO_j
//
%//•
•ti't'» » J » •
*L*j*.r
Qijj
OUNDUAa:CO
SOIL
CLASS
(USCS)
CL
SM
TRENCH T 55
ELEV. (MSL.) 150 DATE COMPLETED 11/8/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
ALLUVIUM
Stiff, damp, dark brown, very Sandy CLAY
_^ -Irregular "v-shape" contact
SANTIAGO FORMATION
\ SANDSTONE, massive ' ' /
TRENCH TERMINATED AT 5 FEET
§UJ^H"Hfci*cef^cnt _ W t — fUJHg
Q. ^
>
^"^ •
-^^^
Q
/-s
DSW
1-t
H^
^-oCJ
Figure A-110, Log of Trench T 55 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL
H ... DISTURBED OR BAG SAMPLE
C ... STANDARD PENETRATION TEST I ... DRIVE SAMPLE (UNDISTURBED)
E ... CHUNK SAMPLE X ... 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.
m PROJECT NO. 06403-12-01
DEPTH
IN
FEET
- 2 -
- 4 -
SAMPLE
NO.
-
•THOLOGYH
'//w\
Hi
fl
cc
LJNDUATESiCD
SOIL
CLASS
(USCS)
CL
CL
rmr*T^XTrf**iTT rri ^x*TRENCH T 56
ELEV. (MSL.) 185 DATE COMPLETED 11/8/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOIL
Stiff, damp, dark brown, Sandy CLAY
SANTIAGO FORMATION
Very stiff to hard, moist, light olive, Silty
CLAYSTONE
-Very weathered and fractured
TRENCH TERMINATED AT 6 FEET rRATIONSTANCEIS/FT.)2«3u^mQ_a-\^
isz"-Wu° .
>£o:a
/%
iu5(Z
gH
COJ?lHCot
E0U
Figure A-lll, Log of Trench T 56 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE 7. ... 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
- 2 -
- 4 -
SAMPLE
NO.THOLOGYH
Xy
F'.M.V:-w-x.vKr.-y.f-i'•.M.V'.NVV
rr
LJNDUATE§CD
SOIL
CLASS
(USCS)
CL
SM
TRENCH T 57
ELEV. (MSL.) 180 DATE COMPLETED 11/8/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOIL
Stiff, damp, dark brown, Sandy CLAY
SANTIAGO FORMATION
Dense, damp, light olive to tan, Silty, fine
SANDSTONE, with some clay
TRENCH TERMINATED AT 5 FEET "RATIONSTANCEJS/FT.)uinjoZm-JUJ^CQQ.'^v^JENSITYC.F.)•-1 .
>°-£~Q
tCOmHliJ°£*-00
ill
m
Figure A-112, Log of Trench T 57 ICG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST I... DRIVE SAMPLE (UNDISTURBED)
@ ... DISTURBED OR BAG SAMPLE G ... CHUNK SAMPLE 1 ... 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
- o -
-
- 2 -
-
- 4 -
SAMPLE
NO.
CDO
O
H_l
'/ V
//./:/
$:]$
$ff
':$&:* » i» »
t£U
<T
3
3
£
SOIL
CLASS
(USCS)
CL
SM
TRENCH T58
ELEV. (MSL.) 170 DATE COMPLETED 11/8/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSODL
Stiff, humid to damp, dark gray-brown, Sandy
CLAY
SANTIAGO FORMATION
Dense, damp, light reddish-brown, Silty, coarse
SANDSTONE, massive
TRENCH TERMINATED AT 6 FEET
E LU^i_iCJ,J
h-jpll.<cJE\
£g3
SLU^
Q.B->-'
>-
II *"^
|5
a^o
^N
UJ
n
2|U
Figure A-113, Log of Trench T 58 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE I] ... CHUNK SAMPLE ' X ... 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
- 2 -
- 4 -
—
6
- 8 -
- 10 -
- 12 -
-
- 14 -
- 1 £.16
SAMPLE
NO.
5.LITHOLO%2
yff f" v.^3
/^s'S/
?/:/
~y/'/•/>;
P§/fe
* r * "L
*XiH
t$
<£U
GROUNDUASOIL
CLASS
(USCS)
SC
sc
SM
TRENCH T59
ELEV. (MSL.) 238 DATE COMPLETED 11/10/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
FILL
Loose, dry to humid, brown, Clayey, Gravelly
SAND, with oversize debris, trash, wood, silt
TERRACE DEPOSIT
Medium dense, reddish-brown, Clayey, fine SAND
-Massive, with lenses of clay and sand, oxide and
carbonate fracture coatings, some porosity,
root-voids
-Irregular depositional contact
SANTIAGO FORMATION
Dense, damp, light orange to olive, Silty, fine
SANDSTONE, with some clay
TRENCH TERMINATED AT 16 FEET
Zi,i/>ENETRATICJESISTANCBLOWS/FT.D. ^
-
-
-
-
-
>_
S2
go
o:w
Q
^_MOISTUREONTENT <>u
-
,M
»m
Figure A-114, Log of Trench T 59 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE T. ... 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
- 2 -
- 4 -_
- 6 -
- 8 -
- 10 -
- 12 -
-
- 14 -
- 16 -
1 O18
SAMPLE
NO.LITHOL06Y/i-j-i-
T-llI -1 .
iji
"-i. •' -
"V-U"r,1-{-1-
.f {• •
-'1-j'""•j-1 •
-."I
•{(/
>•}"
I*'
.-||.GROUNDWATER |SOIL
CLASS
(USCS)
SM
TRENCH T 60
ELEV. (MSL.) 190 DATE COMPLETED 11/10/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
ALLUVIUM
Loose, humid, dark gray-brown, Silty, fine SAND
-Very porous, with root-voids, rootlets
-
-Becomes loose to medium dense, light brown-tan,
Silty, fine SAND
-No root-void, rootlets, becomes cleaner with
depth
-Becomes very moist
TRENCH TERMINATED AT 18 FEET
(CAVING)ENETRATIONRESISTANCEBLOWS/FT.)D-. "^
-
_
-
-
-
-
—
>-
a MOISTUREONTENT <Mo
Figure A-115, Log of Trench T 60 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE 3C ... 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
- 2 -
- 4 -
-
- 6 -
SAMPLE
NO.
C3
ITHOLO|
W,.
%?
^
*.M.Vv.vv;
vIlX*
•fcvt'H'KrI
* f T *L-'*L* T
C£
U
OUNDWA^CJ>
SOIL
CLASS
(USCS)
sc
SM
TRENCH T61
ELEV. (MSL.) 230 DATE COMPLETED 11/10/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Medium dense, humid, dark brown, Clayey, fine
SAND
-Porous, with roots, burrows
_^ -Irregular, out-of-slope inclined contact ^_
SANTIAGO FORMATION
Very dense, damp, light brown to tan, Silty, fine
SANDSTONE, Massive to faintly banded
-Near-horizontal bedding
TRENCH TERMINATED AT 8 FEET
o<^~nyi-
^!N£$%
Lu^ma.0*--'
• >-
t
o;^a
.<-s
1 1 1 ^o;
i-^
Q^™xzz
CJ
.H
Figure A-116, Log of Trench T 61 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST
... DISTURBED OR BAG SAMPLE ... 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
- 2 -
—
- 4 -
—
- 6 -
- 8 -
1U
SAMPLE
NO.
T62-1
T62-2
T62-3*
T62-4
ca
LITHOLO//-
/•/
///•/:
^'/.s
^/y.
//
%/
'vX^
^
a:u
GROUNDWASOIL
CLASS
(USCS)
CL
SC
TRENCH T62
ELEV. (MSL.) 120 DATE COMPLETED 11/10/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
ALLUVIUM
Stiff, moist, dark brown, Sandy CLAY
-Porous, with rootlets, root-voids, burrows
TERRACE DEPOSIT
Medium dense, damp to moist, reddish-brown,
Clayey, medium SAND, some coarse sand
-Massive, with minor root-voids
TRENCH TERMINATED AT 10 FEET
3iu~ENETRATItRESISTANCBLOWS/FT.Q_ w
>
|S
Diw
Q
103.7
"
106.9
^MOISTUREONTENT 0u
9.3
9.6
i*
Figure A-117, Log of Trench T 62 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST I ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE JE ... 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
- 2 -_
- 4 -
- 6 -
- 8 -
- 10 -
- —
- 12 -
—
- 14 -
- 16 -
- 18 -
SAMPLE
NO.THOLOGYH_1
'/ '/
•s-
//
./ •/
''/:/
/V
0
%/•/•/•//•/'//•/.•/,//¥/•/•/
f jr
ft-UNDNflTEo
j)
SOIL
CLASS
(USCS)
CL-SC
CL
TRENCH T 63
ELEV. (MSL.) 100 DATE COMPLETED 11/10/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
ALLUVIUM
Stiff, humid, dark brown, Sandy CLAY to veryClayey SAND
-Porous, with rootlets and root-voids, burrows
Stiff, moist, light brown, very Sandy CLAY
-Massive, with scattered charcoal fragments and
root-voids
-Becomes Very stiff, very moist, light olive, very
Silty CLAY with some fine sand
TRENCH TERMINATED AT 18.5 FEET •RflTIONSTANCEIS/FT. )u^dCL ^
—
-
"*
-lENSITYC.F.)^ .
>w
Q
KHiif
^~ C)o
Figure A-118, Log of Trench T 63 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
S ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE 1. ... 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
- 2 -_
- 4 -
6 ~
—
- 8 -
- 10 -
- 12 -
~ —
- 14 -
16
SAMPLE
NO.
._LITHOLOG•Y •'/•• /•/•/
•/ '/'X/*
/?
•/?
•/•/
•/',
-:1;]'".1'
• , '-!" ,
'/ "/<vryf ,^
/~ '/*/'•//
XX
^-/:/
i ~S /
u
GROUNDMA1SOIL
CLASS
CUSCS)
CL
SM
/-ITv-L
sc.
TRENCH T 64
ELEV. (MSL.) 125 DATE COMPLETED 11/10/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
ALLUVIUM
Stiff, humid, dark gray-brown, Sandy CLAY
-Massive, porous, with rootlets, root-voids and
burrows
-Becomes moist, brown
TERRACE DEPOSIT
Medium dense, damp, light reddish-brown, Silty,
^ medium to coarse SAND, with some clay '
Very stiff, moist, olive-brown, Sandy CLAY,
plastic, with slickensided fractures (discontinuous)
Medium dense, moist, light brown, Clayey, fine to
medium SAND
TRENCH TERMINATED AT 16 FEET
Z s*.PENETRATIORESISTANCE(BLOWS/FT.„
~_
>_
Q
_MOISTURECONTENT (XFigure A-119, Log of Trench T 64 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
S ... DISTURBED OR BAG SAMPLE El ... 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
- 2 -
- 4 -
-
- 6 -_ _
- 8 -
- 10 -
- 12 -
- 14 -
SAMPLE
NO.
^LITHOLOG^/.
/?'/'y?
ty://s'/"'. /•/'
'//:
/•' s,s'/-/
~/-fan
!/£//-,
QLa
GROUNDMATSOIL
CLASS
(USCS)
CL
SC
ML
TRENCH T65
ELEV. (MSL.) 117 DATE COMPLETED 11/10/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, humid to moist, dark gray-brown, Sandy
CLAY
TERRACE DEPOSIT
Medium dense, moist, reddish-brown, very Clayey,
medium to coarse SAND
-Remolded clay seam, 1/2" thick, N20W, 25SW
-Massive, with scattered pebbles and charcoal
fragments
^ -Remolded clay seam, 1/2" to 1" thick N30W _
\ 15SW; possible sheared contact /
~\ SANTIAGO FORMATION (~
\ Hard, damp, light olive, Clayey SILTSTONE /
\ -Massive, blocky, low-angle beds /
TRENCH TERMINATED AT 14 FEET
^ENETRATIORESISTANCEBLOWS/FT.0_"-v-'
-
-
^.
^""^ •^ Q_
Q MOISTUREONTENT (XCJ
m
Figure A-120, Log of Trench T 65 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
@ ... DISTURBED OR BAG SAMPLE Ski ... 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
_ —
- 2 -
- 4 -
—
- 6 -
—
- 8 -
- 1 A1U
- 12 -
14 -1
SAMPLE
NO.
5_
CD
-ITHOLO':/ :/.
/-//./ •/
' '/'/
• /•
'•'/,
':/:'/-
//
/:/
fl
|
ill
QdLJ
ynaNno*CO
SOIL
CLASS
(USCS)
CL
SC
CL
TRENCH T 66
ELEV. (MSL.) 93 DATE COMPLETED 11/10/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
ALLUVIUM
Stiff to very 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, Clayey,
medium SAND, with some silt, massive
SANTIAGO FORMATION
\ Hard, moist, light olive, very Silty CLAYSTONE /
TRENCH TERMINATED AT 15 FEET
Z s-,^LU .ETRATIC3ISTANCOUS/FTUJLUjg
Q- ^
r-
~
^_
i£
KW
a
^
frt ^~~^ ^u
CJ
Figure A-121, Log of Trench T 66 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE JL ... 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
- 2 -
—
- 4 -
- ao
- 8 -
- 10 -
- 12 -
- 14 -
-
16
SAMPLE
NO.
T67-1
T67-2
CDO
O
H_l
' -/ -/
•s-/•/^
y '/
:/j/-
/•/
-/ •/
:\\~I'-j
^
'sty
'&/n
j/x;
w$t//COs/fr
ceu
3
Z
Q
ID
SOIL
CLASS
(USCS)
CL
SM
SC
CL
TRENCH T 67
ELEV. (MSL.) 95 DATE COMPLETED 11/10/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff to very stiff, humid, dark gray-brown, Sandy
CLAY, massive, porous, with rootlets, root-voids
and burrows
^ -Irregular contact ^
TERRACE DEPOSIT
Medium dense, moist, light brown to
reddish-brown, Silty, fine to medium SAND, some
clay, massive
Medium dense, moist, light reddish-brown, Clayey,
medium SAND
SANTIAGO FORMATION
CLAYSTONE, very weathered, with some sand /
TRENCH TERMINATED AT 16 FEET
ZLU~
|||
•""! M p^
UJLUffl
D. ^
-
_
-
-
-
5-
|d
>-b
a
103.4
LUC
HL!
§0u
11.4
Figure A-122, Log of Trench T 67 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
il ... 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 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
ill DEPTH
IN
FEET
_ __
- 4 -
- 6 -
SAMPLE
NO.THOL06Y3
.y :/.
• /•
•/Itf
<$$''
v/y/yW'vMW/.
:$:f:»*»*}*»%
tvKr^
ta
UNDWATE§CO
SOIL
CLASS
(USCS)
CL
CL
SM
rTTn T? T^.T/^TT T* X"OTRENCH T 68
ELEV. (MSL.) 150 DATE COMPLETED 11/10/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOIL
Stiff, humid, dark brown, Sandy CLAY
SANTIAGO FORMATION
Stiff, moist, olive-brown, Silty CLAYSTONE
-Very fractured and weathered
-Horizontal bedding contact
Very dense, damp, light olive to brown, Silty, fine
SANDSTONE, some clay, blocky
TRENCH TERMINATED AT 8 FEET •RATIONSTANCEJS/FT.)SWmQ_Q-w
fc
>!b
Q
|S
°z
u
Figure A-123, Log of Trench T 68 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST
H ... DISTURBED OR BAG SAMPLE Kkl ... 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
- 2 -
- 4 -
6 ~
0
—
- 10 -
SAMPLE
NO.THOL06YH\
•V-"
• }1 • 1"if!
1*1
ll
'/ ' .
''. ','.1 , ' >'
/ •'._
„UNDWATEQ
£a
SOIL
CLASS
(USCS)
SM
SM
ML
TRENCH T 69
ELEV. (MSL.) 120 DATE COMPLETED 11/11/99
EQUIPMENT TRACKHOE ID 555 24"
MATERIAL DESCRIPTION
COLLUVTUM
Loose, damp to moist, dark brown, Silty, fine
SAND
-Porous, rootlets and root-voids, and some clay
-Very irregular contact ^_
SANTIAGO FORMATION
Dense, very moist, light reddish-brown, Silty,
-. /*rt*»T"eo C A XTTlCTfYVr'n , .•» coarse SAIN DO i UIN c, rv
v -Weathered, fractured ' /
Hard, moist, light olive, Clayey SILTSTONE
-Blocky
TRENCH TERMINATED AT 11 FEET 'RATIONSTANCEIS/FT.)gj^jJDQ. ^
—
|-
t-J •
tt^a
LuS
gfe
HL^QC§§o
Figure A-124, Log of Trench T 69 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST
H ... 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 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
- 4 -
SAMPLE
NO.LITHOLOGY%/x/<
^/:/•/^
%
/ / '> /
f // >GROUNDUATERSOIL
CLASS
(USCS)
SC
CL
VIL-CL
TRENCH T70
ELEV. (MSL.) 180 DATE COMPLETED 11/11/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
FELL
Loose, dry, dark brown, Clayey, Gravelly SAND
COLLUVIUM
Stiff, humid, red-brown, very Sandy CLAY
SANTIAGO FORMATION
Hard, damp, light olive-brown, very Clayey
\ J il—i i 0 1 \J1N X_< _/
TRENCH TERMINATED AT 8 FEET ENETRATIONRESISTANCEBLOUS/FT.)Q. "•^^
>-
b»< »
^ ft
a
-MOISTUREONTENT COu
Figure A-125, Log of Trench T 70 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... 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 CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
- 2 -
- 4 -
SAMPLE
NO.
CD
LITHOLO/j/J/L//yVyiiil
W/M1
V0Mffiwv,
Wit,
QLU
GROUNDMASOIL
CLASS
(USCS)
CL
CL
TRENCH T71
ELEV. (MSL.) 105 DATE COMPLETED 11/11/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOBL ,_
Stiff, humid, dark brown, Silty CLAY, with some /
sand /
SANTIAGO FORMATION
Hard, moist, olive-gray, Silty CLAYSTONE
-Massive, blocky
TRENCH TERMINATED AT 6 FEET
2lU~ENETRATIC?ESISTANCBLOWS/FT.U_ "-'W
tez .
0:^a
/%MOISTUREONTENT 0u
Figure A-126, Log of Trench T 71 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... 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 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
- 2 -
- 4 -
_ _
- 6 -
- 8 -
„ _
1U
SAMPLE
NO.
T72-1
v
LITHOLO'/•'/-/ /
i-/:/;
w&VWs/)C.
tyy/Vsy
WMMS
^HP
^HPyx/0X/
$%%
W/MS
y/MW
w%%
u
GROUNDWASOIL
CLASS
(USCS)
CL
SC
CL-CH
TRENCH T72
ELEV. (MSL.) 120 DATE COMPLETED 11/11/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
^ TOPSOIL __. «. •^f. UV^.U^ .
\ Stiff, humid, dark gray-brown, Sandy CLAY /
TERRACE DEPOSIT
Medium dense moist reddish-brown Clayey fine
\ to medium SAND, with pebble gravel along SE /
\ dipping contact /
SANTIAGO FORMATION
Very stiff, moist, light olive with white mottling,
Silty CLAYSTONE
-Remolded clay seam N60W, 35SW, ~ 1/4-1/2"
thick, with gypsum linings
-Very weathered and fractured, massive, with
abundant calcium sulfate
TRENCH TERMINATED AT 10 FEET
^ -^PENETRATHRESISTANC(BLOWS/FT.^_
tjj- t
Q
^MOISTURECONTENT OFigure A-127, Log of Trench T 72 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL
ii ... DISTURBED OR BAG SAMPLE
E... STANDARD PENETRATION TEST I... DRIVE SAMPLE (UNDISTURBED)
B ... CHUNK SAMPLE X... 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
- 2 -
-
- 4 -
SAMPLE
NO.LITHOL06Y'/ '/
•/-/?•/
'/•yy
g
f t
-,GROUNDWATESOIL
CLASS
(USCS)
CL
VIL-CL
TRENCH T73
ELEV. (MSL.) 110 DATE COMPLETED 11/11/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, moist, dark brown, Sandy CLAY
-Massive with 1mm - 2mm spots of gypsum (?)
''
SANTIAGO FORMATION
Hard, moist, light olive, very Clayey SILTSTONE
— \ -Massive, fractured /~
TRENCH TERMINATED AT 8 FEET ENETRATIONRESISTANCEBLOWS/FT.)Q- ^RY DENSITY(P.C.F.)a MOISTUREONTENT <X>a
Figure A-128, Log of Trench T 73 LCG
SAMPLE SYMBOLS ID... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
H ... 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
- 2 -
- 4 -
- 6 -
- 10 -
- 12 -
SAMPLE
NO.LITHOLOGYX^/~y//:/%
%,H
i|
P
-GROUNDWATERSOIL
CLASS
(USCS)
CL
SC
TRENCH T74
ELEV. (MSL.) 85 DATE COMPLETED 11/11/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, moist, dark gray-brown, Sandy CLAY
SANTIAGO FORMATION
Medium dense, damp to moist, light brown to
olive, Clayey, medium SANDSTONE, very
weathered, massive
-Becomes less weathered, dense
TRENCH TERMINATED AT 14 FEET ENETRATIONRESISTANCEBLOWS/FT. )Q_"-~
I
.-RY DENSITY(P.C.F.)1Q MOISTUREONTENT <X>u
Figure A-129, Log of Trench T 74 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
§i ... DISTURBED OR BAG SAMPLE C ... 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
- 2 -
- 4 -
-
- 6 -
-
- 8 -
- in
- 12 -
- 14 -
- 16 -
SAMPLE
NO.
._LITHOLOC/^•/'
//-,
<v//
'/'/X/
'fy,'''/•/
s\^s\S/\^\AS
wk
/j/VVxw
''%%%''%/My%w
r*t
LU
GROUNDUITISOIL
CLASS
(USCS)
CL
CL-CH
CL
TRENCH T75
ELEV. (MSL.) 98 DATE COMPLETED H/ll/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
ALLUVIUM
Stiff, moist, dark brown, Sandy CLAY
-Becomes more moist
_^ -Irregular transitional contact ^_
Soft to stiff, very moist, olive-brown, Silty CLAY
-Very fractured, weathered, mixed texture, with
numerous clay seams (possible weathered Santiago)
SANTIAGO FORMATION
Very stiff to hard, moist, light olive, Silty
^ CLAYSTONE r^
\ -Very fractured, blocky /
TRENCH TERMINATED AT 17 FEET
"Z. f^ENETRATIORESISTANCEBLOWS/FT.a."-^
_
_
j_
|S
>i
a MOISTUREONTENT <XL)
Figure A-130, Log of Trench T 75 LCC
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST
H ... 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 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
_
- 2 -_
- 4 -
S.
- 6 -
SAMPLE
NO.LITHOLOGY~y •/• •/•/ /'.fi(/y/%/
WJfiu
ywffi
'/xffi/X/'W$,
m
,y
GROUNDWATESOIL
CLASS
(USCS)
CL
CL
TRENCH T76
ELEV. (MSL.) 110 DATE COMPLETED 11/11/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOIL
SANTIAGO FORMATION
Hard, moist, light olive mottled with white, Silty
CLAYSTONE, with some sand, weathered with
calcium sulfate (gypsum) mottling, massive
-Clay seam 1/8" thick, low angle and discontinuous
TRENCH TERMINATED AT 8 FEET ENETRflTIONRESISTANCEBLOWS/FT.)Q- ^
Ih
|d
OL^0 MOISTUREONTENT (X)o
Figure A-131, Log of Trench T 76 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE
... DRIVE SAMPLE (UNDISTURBED)
... WATER TABLE OR SEEPAGE
NOTE: THE LOG QF 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
- 2 -
- 4 -
- 6 -
• 10
SAMPLE
NO.
-LITHOL06Y,//
<'/'
^Y*•/~,Y/'/'',/ f GROUNDWATERSOIL
CLASS
(USCS)
CL
dL-MH
TRENCH T77
ELEV. (MSL.) 100 DATE COMPLETED 11/11/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, moist, dark gray-brown, Sandy CLAY;
massive, porous, with root-voids, burrows
-Becomes more sandy, moist
SANTIAGO FORMATION
Very stiff to hard, moist, light olive, very Clayey
S oALj Ail vJ^l i_!t ./^""s
TRENCH TERMINATED AT 10 FEET ENETRflTIONZESISTANCEBLOWS/FT.)a_"-~
gul
a<->
txL^a MOISTUREONTENT <X>CJ
Figure A-132, Log of Trench T 77 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE T. ... 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
- 2 -
-
- 4 -
~ —
- 6 -
- 8 -
-
- 10 -
-
- 12 -
- 14 -
16
SAMPLE
NO.LITHOLOGYM ''.-.•-M-• }i -i _ |.
;.]. J.-j.
V
•1-J--]{;.•if----i. 1 -i/i {• •:-i- ••-'j"-i ''
'i• i"1-'.[].'GROUNDUATER |SOIL
CLASS
(USCS)
SM
SM
TRENCH T78
ELEV. (MSL.) 180 DATE COMPLETED 11/11/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
ALLUVIUM
Loose, humid, dark brown, Silty, fine SAND
-Very porous, with rootlets, root-voids, burrows
throughout
-Contains trace clay, lighter brown
TERRACE DEPOSIT
\
Medium dense, moist, light brown, Silty, fine !~
SAND /
-Minor root-voids /
TRENCH TERMINATED AT 16 FEET ENETRATIONJESISTANCEBLOWS/FT.)CL.'*-v-/
-
-
_
>-
|u
ofo MOISTUREONTENT (.y.yo
Figure A-133, Log of Trench T 78 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD.PENETRATION TEST I ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE E ... CHUNK SAMPLE T.'... 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
- 2 -
-
- 4 -
- 6 -
- 8 -
- 10 -
-
- 12 -
— ~~
- 14 -
- 16 -
lo
SAMPLE
NO.
CDO
O
H_j
^/:'/
7 '/
//
'&
-:1:i"-~• \- \ \- \//•^w\
////,-
/ sw,'// •
1
caLJ
2
SOIL
CLASS
(USL5;
CL
SM
SC-CL
r * T!"* TT'X.T/^TT rri Mf\TRENCH T 79
ELEV. (MSL.) 150 DATE COMPLETED 11/11/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
ALLUVIUM
Stiff to very stiff, humid to damp, reddish-brown,
very Sandy CLAY
-Massive, porous, with root-voids and burrows
Medium dense, damp, brown, Silty, fine SAND
-Porous, with root-voids, 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
z^^
LJ f ^ •ili
i\ '""^r^
§"mCL ^^
—
_
-
—
~~
-
>-^~" -.
UjJQ ,
>fe
Q
/-»
il\
^Zj—|LU
izEoa
Figure A-134, Log of Trench T 79 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
H ... 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 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
- 2 -
- 4 -
-
- 6 -
_ _
- 8 -
- 10 -
- 12 -
- 14 -
- 16 -
1 Qlo
SAMPLE
NO.LITHOLOGY^/:
S/
^X%
'-/-'/
s'/•/
-/:/y/;r
%
y/.
y,
?/
'./:/GROUNDWATERSOIL
CLASS
CUSCS)
CL
TRENCH T80
ELEV. (MSL.) 158 DATE COMPLETED 11/11/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
ALLUVIUM
Stiff, humid to damp, dark brown, Sandy CLAY
-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 ENETRATIONRESISTANCEBLOWS/FT.)Q_ "-*-/
—
-
-
-
-
fesi
0 MOISTUREONTENT <Mo
Figure A-135, Log of Trench T 80 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
ii ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE T. ... 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
- 2 -
_
- 4 -
- 6 -
SAMPLE
NO.ITHOLOGY_i
/- ',//.
, ,
'
< '
'.''
'/ •
'/>
••/f
/
*
,•
;
',OUNDWATERceCD
SOIL
CLASS
(USCS)
sc
ML
TRENCH T 81
ELEV. (MSL.) 190 DATE COMPLETED 11/11/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOIL _
Loose, dry, dark brown, very Clayey SAND /
SANTIAGO FORMATION
Hard, damp, very light olive to brown, Clayey
SILTSTONE, with some sand, massive to near
horizontal beds -
TRENCH TERMINATED AT 7 FEET ORATIONISTANCEJUS/FT.)UjWcQQ- ^DENSITY.C.F.)D;V
Q
0;^
i-t;
g|
o
Figure A-136, Log of Trench T 81 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST I... DRIVE SAMPLE (UNDISTURBED)
ii ... DISTURBED OR BAG SAMPLE E ... CHUNK SAMPLE JL ... 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
- 2 -
- 4 -
- —
- 6 -
- 8 -
10
12
.
- 14 -
SAMPLE
NO.
fcO
o
H1
^/',
/•/^
Vv
&,yL//
i
.11-1-
'11~S- * ~ /
'•'//•
//"'
ty/
ULjj
<n
3
oj^
SOIL
CLASS
(USCS)
CL
SM
SC
-
TRENCH T 82
ELEV. (MSL.) 175 DATE COMPLETED 11/11/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
ALLUVIUM
Stiff, damp, dark brown, very Sandy CLAY
-Very porous, with root-voids, burrows
TERRACE DEPOSIT
Medium dense, moist, light brown, Silty, coarse
^ oANU, with some tine CjRAVtL f
Medium dense, moist, reddish-brown, Clayey, fine
to medium SAND, massive
TRENCH TERMINATED AT 15 FEET
ILU'":Hyi-l-jpll.c£\
K^-Z
S^m0.°^^
-
_
~
>•
H-
I'Q .
o:^Q
^
Di^
^2HuioCE2
O
Figure A-137, Log of Trench T 82 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
ii ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE 1. ... 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.
ttt PROJECT NO. 06403-12-01
DEPTH
IN
FEET
- 2 -
- 4 -
- 6 -
- g -
~ 10
SAMPLE
NO.
CDO
O
h-H|
'fy?
//./ •/
/'/• /•
•//
Vv<'/'
'
fi y^>~
<r
D
Q
^CD
SOIL
CLASS
(USCS)
CL
CL
C\>f5M
rriTnT^Tk.T^1TT HP O^TRENCH T 83
ELEV. (MSL.) 130 DATE COMPLETED 11/12/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION -
COLLUVIUM
Very stiff, moist, dark olive to brown, very Sandy
CLAY
-Massive, porous, with root-voids, rootlets
^ -Transitional, near-horizontal ^^_
TERRACE DEPOSIT (?)
Stiff, very moist, light olive, Silty CLAY
^ ^ -very weatnered, witn discontinuous clay seams f
f
Medium dense damp, light reddish-brown Silty _
\ medium SAND, with some clay /
TRENCH TERMINATED AT 10 FEET
ZLO^«J t\ *
l|ct
ii HH ?^
S^mQ_ "Ssx
S^
^"^ •Q_
0
o;^
H .ot2_Z
0
1
Figure A-138, Log of Trench T 83 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST I ... DRIVE SAMPLE (UNDISTURBED)
li ... DISTURBED OR BAG SAMPLE E ... CHUNK SAMPLE T. ... 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
- 2 -
- 6 -
SAMPLE
NO.
>-CD
LITHQLO//•
/-j/
'/ '/'Y,'/&&/%>iillr
^lipyx/%%>ii
CcL
U
GROUNDMASOIL
CLASS
(USCS)
CL
CL
TRENCH T 84
ELEV. (MSL.) HQ DATE COMPLETED 11/12199
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, damp to moist, dark brown, Sandy CLAY
SANTIAGO FORMATION
Stiff, very moist, olive-brown, Silty CLAYSTONE,
very weathered, fractured, with discontinuous
slickensided clay seams.
TRENCH TERMINATED AT 8 FEET
SLU^ENETRATIlJESISTANCBLOWS/FT>•
^^ •
^— ^^££Wa
^.MOISTUREONTENT Oo
Figure A-139, Log of Trench T 84 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST
H ... 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 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
o
- 2 -
—
- 4 -
- 6 -
- g -
—
m
SAMPLE
NO.
T85-1
T85-2
-LITHOLOGYx/yy//x^
x/
<&**n*S
iflo:
vflr
"**J-'\•!f!v-N GROUNDWATER ]SOIL
CLASS
(USCS)
CL
.
SM
TRENCH T85
ELEV. (MSL.) 175 DATE COMPLETED 11/15/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, moist, dark olive-brown, Sandy CLAY
_^ -Irregular transition inclined southeast ^_
SANTIAGO FORMATION
Medium dense, moist, light brown, Silty, very fine
SANDSTONE, with trace clay, massive
L_^ -Becomes dense, blocky, more sandy ^_
TRENCH TERMINATED AT 10 FEET ENETRATIONRESISTANCEBLOWS/FT.)Q. ^RY DENSITY(P.C.F.)a MOISTUREONTENT <.**>o
Figure A-140, Log of Trench T 85 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE f. ... 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
- 2 -
- 4 -
- 6 -
- 8 -
-
- 10 -
- 14 -
16
SAMPLE
NO.
T86-1
T86-2
T86-3
T86-4
._
CDo
O
El
'//"'
/•/'
-/ '/
' '/'/
• 7-
Vs
w^4
''•/:/
&
yV
y$%%
iif
ceLU
2
Q*
U>
SOIL
CLASS
(USCS)
CL
SC-CL
CL-CH
TRENCH T86
ELEV. (MSL.) 143 DATE COMPLETED 11/15/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, damp, dark gray-brown, Sandy CLAY,
massive, porous, with rootlets and root-voids and
burrows
TERRACE DEPOSIT (?)
Stiff, very moist, reddish-brown, very Clayey, fine
SAND, massive, with scattered fine gravel
-Transitional, near-horizontal contact ^_
SANTIAGO FORMATION
Very stiff, very moist, olive-brown, Silty
CLAYSTONE, ve^ weathered, fractured, with
discontinuous clay seams
-Becomes olive-gray
TRENCH TERMINATED AT 16 FEET
z /-^o W «Hy h-t-?F\l-<c£\£k§r~ Lj3UJgjO
uS^inQ- ^
—
^_1..LJ/-SHgulgtJ
aw
0
104.7
101.4
^
^^ ^Du
20.6
23.3
Figure A-141, Log of Trench T 86 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
£i ... DISTURBED OR BAG SAMPLE ii] ... CHUNK SAMPLE f. ... 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
- 2 -
—
- 4 -
_
- 6 -
- 8 -
—
- 10 -
- 12 -
-
- 14 -
- 16 -
SAMPLE
NO.
T87-1
T87-2
>•CDo
O
1—H_1
<y^• /•/ '//•/-•'/'/•i '-I-• \• i- 1 "i\
:![]•
fy/.
fa/%£'&%•££x
•'//.
%
K
LU
t
Z
no:CD
SOIL
CLASS
(USCS)
CL
SM
SC-CL
TRENCH T 87
ELEV. (MSL.) 138 DATE COMPLETED 11/15/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff, damp, dark gray-brown, Sandy CLAY
-Massive, porous, with rootlets, root-voids and
burrows
_^ -Becomes moist to very moist ^_
TERRACE DEPOSIT
Medium dense, damp, light reddish-brown, Silty,
fine SAND, with some clay
Medium dense, damp, reddish-brown, Clayey, fine
SAND to very Sandy CLAY, massive, blocky, with
scattered fine gravel and grit, some porosity, with
scattered rootlets and root-voids
-Scattered small fragments of charcoal
TRENCH TERMINATED AT 17 FEET
"Z. /•vO Jj •git
!""! n?^
Lu"m
D- '-'
—
-
-
-
-
j_
H-^
fe
^ «
>fc
0
116.3
^^i ^^^^ ^Du
15.4
Figure A-142, Log of Trench T 87 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST I... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE T.... 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
- 2 -
-
- 4 -
- 6 -
- 8 -
- 10 -
- 12 -
SAMPLE
NO.
^CDo
O
H
'/ '/
• 7-
<^'/
•/ '/
'/j/-
$/
W
'*$,
'fyfr,
tyfrx
I!iii
QLLU
T
=1
3
^CD
SOIL
CLASS
(USCS)
CL
CL-CH
CL
TRENCH T 88
ELEV. (MSL.) 145 DATE COMPLETED 11/15/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
t
COLLUVIUM
Stiff, moist, dark gray-brown, Sandy CLAY
-Massive, porous, with rootlets, root-voids and
burrows
TERRACE DEPOSIT
Soft to stiff, very moist to wet, light olive-brown,
Silty CLAY, with some reddish-brown sand lenses,
and discontinuous clay seams, almost plastic
SANTIAGO FORMATION
\
Very stiff, very moist, light olive-gray, Silty /
CLAYSTONE /
-Very weathered, with discontinuous clay seams, /
very fractured /
TRENCH TERMINATED AT 14 FEET
^LU .
^n L^ \Qr| i_ ^Q
UJ^O
u^inQ_°-W
5_
|ul
go
Q^Q
Qi^
fe
^~ ^3o
Figure A-143, Log of Trench T LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
§i ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE Jf. ... 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
- o -
- 2 -
- 6 -
- 8 -
SAMPLE
NO.LITHOLOGY'/ '/
• /•
/y/
j//
HP
'%%%>B111;iiii GROUNDWATERSOIL
CLASS
(USCS)
CL
CL
TRENCH T 89
ELEV. (MSL.) 123 DATE COMPLETED 11/15/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVTUM
Stiff, damp to moist, dark gray-brown, Sandy
CLAY
SANTIAGO FORMATION
Stiff, very moist, light olive-brown, Sandy
CLAYSTONE, very weathered, fractured
-Becomes hard, moist, olive, Silty CLAYSTONE,
fractured, blocky, massive
TRENCH TERMINATED AT 9 FEET ENETRATIONRESISTANCEBLOWS/FT.)Q_"-w RY DENSITY(P.C.F.)Q MOISTUREONTENT (*)u
Figure A-144, Log of Trench T 89 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST
... DISTURBED OR BAG SAMPLE ... 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
PenT
- 6 -
o
SAMPLE
NO.
CDO
O
H_l
'//:
• /'m&
w/y//
H*3vJ4:*
C£U
<E
3
-)
J>
SOIL
CLASS
(USES)
CL
CL
-
SM
TRENCH T 90
ELEV. (MSL.) 230 DATE COMPLETED 11/15/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOBL
Stiff, humid, dark gray-brown, Sandy CLAY
SANTIAGO FORMATION
Hard, damp, olive, Silty CLAYSTONE; very
•> fractured, and weathered /•x
v -Near-horizontal bedding - contact _'
Very dense, damp, light olive to brown, Silty,
coarse SANDSTONE, with trace clay, blocky
TRENCH TERMINATED AT 8 FEET
Suu~!£Q^rnO
|| I r~1 Q
Lu^OQQ_D-'^
5-
fe" •
tKW
Q
^N
a:'"
Hji;
§gu
Figure A-145, Log of Trench T 90 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST I... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE T. ... 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
- o -
- 2 -
-
- 4 -
- 6 -
SAMPLE
NO.
CD
LITHOLO'•/ y
S'/'
•/ '/
/•/
VV
//•
/'/
QLXI
GROUNDUASOIL
CLASS
(USCS)
CL
CL
TRENCH T91
ELEV. (MSL.) 130 DATE COMPLETED 11/15/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVTUM
Very stiff, damp to moist, dark gray-brown, Sandy
CLAY, porous, with rootlets, root-voids, burrows
TERRACE DEPOSIT
Very stiff to hard, moist, reddish-brown, very
\
oanay V-L.AI , massive, DiocKy, witn some porosity, r~
with rootlets, root-voids /
TRENCH TERMINATED AT 7 FEET
Suj~ENETRATIC<-ESISTANCBLOWS/FT.>-
|o
a
-
^,MOISTUREONTENT (.'o
Figure A-146, Log of Trench T 91 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE T.... 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
M
DEPTH
IN
FEET
- 2 -
- 4 -
- 6 -
- 8 -
1 nID
SAMPLH
NO.LITHOL06YX/^
{-./
./ :/
'.[.Vi**.r.%%*
^'ty'f*m.'•[••f*;j[jj|
ll GROUNDWATERSOIL
CLASS
(USCS)
CL
SM
TRENCH T92
ELEV. (MSL.) 225 DATE COMPLETED 11/15/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOIL
Stiff, humid, dark gray-brown, Sandy CLAY
SANTIAGO FORMATION
Dense, damp, light tan, Silty, fine to medium
SANDSTONE, massive, blocky
-Near-horizontal bedding
TRENCH TERMINATED AT 10 FEET ENETRATION(•ESISTANCEBLOWS/FT.)Q_ ^RY DENSITY(P.C.F.)Q MOISTUREONTENT (X)o
Figure A-147, Log of Trench T 92 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST I ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE E ... CHUNK SAMPLE 3E ... 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
- 2 -
- 4 -
- 6 -
SAMPLE
NO.LITHOL06Y1inm%'.r/.y:-w-x
•TC'F*• »]» »*.[.%%•v.vv GROUNDWATERSOIL
CLASS
(USCS)
CL
CL
SM
TRENCH T93
ELEV. (MSL.) 195 DATE COMPLETED 11/15/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOIL
Stiff, humid to damp, dark brown, Sandy CLAY
SANTIAGO FORMATION
\ CLAYSTONE /
, -Very fractured, with calcium sulfate linings /
Dense, damp, light brown to olive, Silty, medium
~\ SANDSTONE, with some clay, massive, blocky /~
TRENCH TERMINATED AT 7 FEET PENETRATIONRESISTANCE(BLOWS/FT.)DRY DENSITY(P.C.F.)MOISTURECONTENT W>Figure A-148, Log of Trench T 93 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
® ... DISTURBED OR BAG SAMPLE Eb] ... 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 CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
- 2 -
—
- 4 -
- 6 -
- 8 -
~ ~~
- 10 -
- 12_ _
SAMPLE
NO.
CDo
o
1—H_l
'fy?/?-/*
-/•v^
vV
^
:-:\''-~• >i -i .
.'!• j" "
.{I.X .x
r
•/
Cf,jj
T
D
-)
CCCD
SOIL
CLASS
\U5Ua)
CL
SM
CL
TRENCH T 94
ELEV. (MSL.) 175 DATE COMPLETED 11/15/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
ALLUVIUM
Stiff, moist, dark brown, Sandy CLAY
-Porous, with rootlets, root-voids and burrows
TERRACE DEPOSIT
Medium dense, damp, light yellow-brown to
orange, , Silty, fine SAND, some porosity,
root-voids
Medium dense, moist, reddish-brown, very Sandy
CLAY, massive
TRENCH TERMINATED AT 14 FEET
t
0^
5»^"t|t
£t7>§
UjWcDQ- "^
_
>-
tj~I-:g"
o:^a
. ^
ll\ ^a:^
2$
HJ£
=1O
Figure A-149, Log of Trench T 94 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST I ... DRIVE SAMPLE (UNDISTURBED)
§ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE 3E ... 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
- 2 -
- 4 -
- 6 -
- 8 -
- 10 -
~ 14
SAMPLE
NO.
,_LITHOLOG^/:/'/
V^
^
^%
%
;//
u
GROUNDWmSOIL
CLASS
(USCS)
CL
CL-CH
TRENCH T 95
ELEV. (MSL.) 193 DATE COMPLETED 11/15/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
ALLUVIUM
Soft to stiff, very moist, dark brown, Sandy
CLAY, massive, porous, with root-voids, rootlets
1
-Very irregular, sharp contact
SANTIAGO FORMATION
Stiff, very moist, olive mottled with white and
^ brown, Sandy CLAYSTONE r
\ -Very weathered, with slickensided, remolded clay /
\ seams throughout /
TRENCH TERMINATED AT 14 FEET
Z s*.ENETRATIORESISTANCEBLOWS/FT.0_"-\_/
>.i—^
|u
Q
_MOISTUREONTENT <*u
Figure A-150, Log of Trench T 95 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST I ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE T. ... 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
- 2 -
- 4 -
- —
- 6 -
- 8 -
10
12
SAMPLE
NO.
CD
LITHOLO'/ '/
• s-
'/
Vv
%
/:/.
//
' y ~ /'•A•'f'***t*• *3**r•v«v
QL
U
GROUNDUASOIL
CLASS
(USCS)
CL
SM
TRENCH T96
ELEV. (MSL.) 200 DATE COMPLETED 11/15/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
ALLUVIUM
Soft to stiff, very moist, dark brown, very Sandy
CLAY
SANTIAGO FORMATION
Dense, damp, light olive-gray, very Silty, fine
^\ oANDolursJb, with some clay ^\
TRENCH TERMINATED AT 12 FEET
^UJ~_ENETRATIC?ESISTANCBLOWS/FT.Q_"-v-/
-
>
|u
ofa
-^MOISTUREONTENT Ou
"
Figure A-151, Log of Trench T 96 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE f. ... 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
- 2 -
_ _
- 4 -
- 6 -
SAMPLE
NO.LITHOLOGYy •'/•' •/wHiP
W//Wy/yx%
llpifil GROUNDUATERSOIL
CLASS
(USCS)
CL
CL
TRENCH T97
ELEV. (MSL.) 210 DATE COMPLETED 11/15/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
_ TOPSOIL
\ Stiff, humid, dark brown, Sandy CLAY /
SANTIAGO FORMATION
Hard, damp, olive-gray, very Silty CLAYSTONE,
massive to horizontal beds, very fractured and
weathered
-Becomes very hard, moist, less fractured and
"\ " Cd.LU.Ci CLl ^j—
TRENCH TERMINATED AT 8 FEET ENETRATIONRESISTANCEBLOUS/FT.)Q_ <->RY DENSITY(P.C.F.)Q MOISTUREONTENT <^)u
Figure A-152, Log of Trench T 97 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST
... DISTURBED OR BAG SAMPLE ... 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
- 2 -
—
- 4 -
—
- 8 -
-
- 10 -
SAMPLE
NO.LITHOLOGY^/'
• /•/:/.
?'/'.
fy/
'//'
>f;K£
i't'-ifi» » j* *
:•[•!•£GROUNDWATERSOIL
CLASS
(USCS)
CL
SM
TRENCH T 98
ELEV. (MSL.) 210 DATE COMPLETED 11/15/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Soft to stiff, very moist, dark brown, Sandy CLAY
-Porous, with rootlets, root-voids and burrows
-Irregular transitional contact, with fragments of
\ Santiago formation /
SANTIAGO FORMATION
Dense, damp, light brown to olive, Silty, fine
SANDSTONE, massive, blocky, with trace clay
-Near-horizontal bedding
TRENCH TERMINATED AT 10 FEET ENETRATIONRESISTANCEBLOWS/FT.)Q- w
-
-
-
|o
a MOISTUREONTENT (X)u
Figure A-153, Log of Trench T 98 ICG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE T. ... 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
- 2 -
-
- 4 -
- 6 -
SAMPLE
NO.LITHOLOGY^/'.
'./•/
/y
'*&/••i[;W
*.M.V
v3* r
;i|:]:i|i GROUNDWATERSOIL
CLASS
(USCS)
CL
SM
TRENCH T99
ELEV. (MSL.) 175 DATE COMPLETED 11/15/99
EQUIPMENT TRACKHOE ID 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Stiff to soft, moist, dark gray-brown, Sandy CLAY
-Massive, porous, with rootlets, root-voids and
burrows
_^ -Irregular contact inclined SW - ^-
SANTIAGO FORMATION
Very dense, damp, light tan to orange, Silty, fine
SANDSTONE, massive to near-horizontal beds
TRENCH TERMINATED AT 8 FEET ENETRATIONRESISTANCEBLOWS/FT.)Q_ "-s^
feBO
a MOISTUREONTENT <*>u
Figure A-154, Log of Trench T 99 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL E... STANDARD PENETRATION TEST I... DRIVE SAMPLE (UNDISTURBED)
& ... DISTURBED OR BAG SAMPLE ' E ... CHUNK SAMPLE 3E ... 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
pctT
- 2 -
- 4 -
- 6 -
- 10 -
SAMPLE
NO.THOL06YHI
'/ '/
• s-
/-,/
V^%
%%
i/ •/-
/•// y*
^UNDWATEn
CD
SOIL
CLASS
vUSLa)
CL
SC
CL
r • li fcT7"%TA^1TT nn-fl /\/\TRENCH T100
ELEV. (MSL.) 175 DATE COMPLETED 11/15/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLtrVTUM
Soft to stiff, moist, dark brown, Sandy CLAY
-Porous, with rootlets, root-voids
TERRACE DEPOSIT
Medium dense, moist, reddish-brown, Clayey, fine
to medium SAND, with some silt, grit
Very stiff to hard, very moist, olive-brown, very
Canriv PT AY
TRENCH TERMINATED AT 12 FEET [RATIONSTANCEJS/FT.)LuHo
Lu^mQ- °-*-'JENSITYC.F.)tt~O
ce~
si
o^u
Figure A-155, Log of Trench T100 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE E ... 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
rtcT
- 2 -
_ —
- 4 -
- 6 -
SAMPLE
NO.
('r
3
" -/
/• /
/
t
t '
'1-\--\ /
»i(j
-//• t>/
•
, ,'
K.IJ
r
a
o
s
•
SOIL
CLASS
(UaUS;
CL
-1L-MH
TnTfcTTiTfc.T/"1**TT IT1-* /\-*TRENCH TlOl
ELEV. (MSL.) 197 DATE COMPLETED 11/15/99
EQUIPMENT TRACKHOE ID 555 24"
MATERIAL DESCRIPTION
1
TOPSOIL _
Stiff, humid, dark gray-brown, Sandy CLAY /
SANTIAGO FORMATION
Hard, damp, light olive, very Clayey SILTSTONE
-Very weathered and fractured, with some
sandstone lenses
_. -Becomes very hard, dry, light olive, cemented, ,—
\ Silty SANDSTONE /
\ -Concretion layer /
TRENCH TERMINATED AT 7 FEET
REFUSAL
ZLU-"-
ti (_) *ils
UJ^O
U^fflQ- ^^
Ijj
•
K^Q
,-,
)|f ^
H^HjiJ
E§
0
1
Figure A-156, Log of Trench TlOl ICG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST
H ... 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 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
- 2 -
—
- 4 -
—
- 6 -
SAMPLE
NO.LITHOL06Y^/:
/•/
//.
S-/:y1
•/:/.
//
::l:i3:GROUNDWATERSOIL
CLASS
(USCS)
CL
SM
TRENCH T102
ELEV. (MSL.) 210 DATE COMPLETED 11/15/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Soft to stiff, moist, dark brown, Sandy CLAY
-Porous, with rootlets, root-voids
-Becomes very stiff, less porous
SANTIAGO FORMATION
A Very dense, dry, light orange-brown, cemented, j
\ Silty, coarse SANDSTONE, concretion layer /
TRENCH TERMINATED AT 8 FEET
REFUSAL ENETRATION{ESISTANCEBLOWS/FT.)Q- ^
fcgu
Q MOISTUREONTENT <*>CJ
,mt
„ Figure A-157, Log of Trench T102 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... 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.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
- 2 -_
- 4 -
- 6 -
- 10 -
-
- 12 -
SAMPLE
NO.
T103-1
T 103-2
CDa
LITHOL/- -*,- x/•/-S,
* / * s-*»r»^t *v*v'.j:*'.%V.N
*L * \
:|i|j|:[:
1w%
</$$/wfflw
im
jj
(T
GROUNDWSOIL
CLASS
(USCS)
sc
SM
:L-ML
TRENCH T103
ELEV. (MSL.) 250 DATE COMPLETED 11/16/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOIL
SANTIAGO FORMATION
Dense, damp, light reddish-brown to brown, Silty,
fine SANDSTONE, massive, blocky
Hard, damp to moist, olive-brown, Silty
CLAYSTONE, with abundant gypsum (calcium
sulfate) in alternating layers
-Horizontal, laminated beds
TRENCH TERMINATED AT 13 FEET
§UJ~C_D ™
tyS|
Q_°£*-/
-
>
r™^^
^^ •
o;w
a MOISTURONTENT (o
Figure A-158, Log of Trench T103 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
HI ... DISTURBED OR BAG SAMPLE El ... CHUNK SAMPLE T. ... 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
- 2 -
- 6 -
SAMPLE
NO.
COo
o
I—
^
"d Vl.
/t/y-
ty.
:-i|[:' "F'vt*H'krI
^j
<E
3
— )
CD
SOIL
CLASS
(Ubt.5;
SM
CL
SM
TRENCH T104
ELEV. (MSL.) 320 DATE COMPLETED 11/16/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVTUM
\ Loose, dry, light brown, Gravelly, Silty SAND '
Stiff, moist, olive, Sandy CLAY
SANTIAGO FORMATION
Very dense, damp, light brown-orange, Silty, fine
SANDSTONE, with some clay
-Horizontal laminated bedding
TRENCH TERMINATED AT 7 FEET
guj^
H^KHJfll.<E£\£"§UJ fr\ O
S^mQ- ^*
—
>•
b2z"-gu
0&Q
^N
^§0CJ
Figure A-159, Log of Trerich T104 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL E ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
il ... 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 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
- 2 -
-
- 4 -
-
- 6 -
SAMPLE
NO..ITHOLOGYM-j-1-
Ul• \\-\-"• -i-
:$££
*f* * r* ^ 4 »( *
H . IK
$&?OUNDUATERCD
SOIL
CLASS
(USCS)
SM
SM
TRENCH T105
ELEV. (MSL.) 302 DATE COMPLETED 11/16/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Loose, humid, light reddish-brown, Silty, fine
SAND, with some clay and pebble-gravel
-Porous, with root-voids, burrows
SANTIAGO FORMATION
Very dense, damp, light tan, Silty, fine
SANDSTONE
-Horizontally bedded
TRENCH TERMINATED AT 7 FEET ETRATIONSISTANCEOWS/FT.)UJ^OQQ- ^
-DENSITY3.C.F.)o:^Q
1rjtgz
U
-
Figure A-160, Log of Trench T105 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE El ... CHUNK SAMPLE f. ... 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
reel
- 2 -
- 4 -
—
f. _
SAMPLE
NO.
T106-1
CDo
o
1—H_]
''d Vl.
^/.y~
/•/
•:[p
'tax'
•*f • •[•. I> *
'.M.VX-KK
iru
<E
3
— i
J3
SOIL
CLASS
(USCS)
SM
CL
SM
rrtTfc Tm^r/""iTT HP-* f\£TRENCH T106
ELEV. (MSL.) 310 DATE COMPLETED 11/16/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
\ Loose, dry, light brown, Gravelly, Silty SAND /
Stiff, moist, olive, Sandy CLAY
SANTIAGO FORMATION
Very dense, damp, light tan, Silty, fine
SANDSTONE
-Upper 12" moderately cemented
TRENCH TERMINATED AT 7 FEET
o'JJ^Pit
f&$111 *75 O
SLUSQ
0.°^^
>-
fe" •
j£w
Q
^
IfeHiiJ
Eg
CJ
Figure A-161, Log of Trench T106 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL
H ... DISTURBED OR BAG SAMPLE
C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
B ... CHUNK SAMPLE 3E ... 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
- 2 -
- 6 -
SAMPLE
NO.LITHOL06Y?/-^
r//y/
%
:|[|[:GROUNDWATERSOIL
CLASS
(USCS)
sc
SM
TRENCH T107
ELEV. (MSL.) 301 DATE COMPLETED 11/16/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Loose, humid, medium dark brown, Clayey, fine
SAND, with some silt, scattered gravel
SANTIAGO FORMATION
Very dense, damp, light tan to gray, Silty, fine
SANDSTONE
TRENCH TERMINATED AT 8 FEET ENETRATIONRESISTANCEBLOWS/FT.)D- ^
Ijjj
Q MOISTUREONTENT <X>CJ
Figure A-162, Log of Trench T107 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
^ ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE T. ... 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
- 2 -
4 ~
- 6 -
-
- 8 -
SAMPLE
NO.
F108-1
nos-2 ITHOLOGY_i
%?
r s fm
':-.•••:•'.&
';.-a'.:.':'S:
':-. '•<?.'•":
$j:&Iv/.r.
v'yt"
-OUNDWATERa:CD
SOIL
CLASS
(USCS)
SC
M-GM
SM
TRENCH T108
ELEV. (MSL.) 320 DATE COMPLETED 11/16/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOEL
with some silt /
UNDAVISTA FORMATION
Very dense, damp, reddish-brown, very Gravelly,
medium SANDSTONE
_^ -Irregular, nearly horizontal contact
SANTIAGO FORMATION
Dense, damp, light tan, Silty, fine SANDSTONE
TRENCH TERMINATED AT 9 FEET :TRATIONISTANCE3WS/FT.)ZW_J^— 1 1 1 _JLU^CQQ."-^DENSITY.C.F.)>5?
Q
ui;5o:
wgHtfot
= 0O
Figure A-163, Log of Trench T108 LCG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED)
H ... 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
- 2 -
-
- 4 -
~ —
- 6 -
SAMPLE
NO.LITHOL06Y4 ' "1
4
K
M
•U-i-
:'-fl'l>
Svl*,f,^'i*.vK'.*»K • C*GROUNDWATERSOIL
CLASS
(USCS)
SM
SM
TRENCH T109
ELEV. (MSL.) 285 DATE COMPLETED 11/16/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
COLLUVIUM
Loose, dry to humid, medium light brown,
Gravelly, Silty, fine SAND, with clay, porous, with
numerous root-voids, burrows
_^ '-Irregular contact inclined northwest ^_
SANTIAGO FORMATION
SANDSTONE /
TRENCH TERMINATED AT 9.5 FEET ENETRATIONRESISTANCEBLOUS/FT.)Q. '^
|cJ>i
a MOISTUREONTENT (JOo
Figure A-164, Log of Trench T109 ICG
SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL E... STANDARD PENETRATION TEST
ii ... DISTURBED OR BAG SAMPLE HI ... 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
- 2 -
-
- 4 -
- 6 -
SAMPLE
NO.
CDo
d
H
-1-}T1 , jJ- -vJ•-G- -.(
3?0£
:Q •-."-(;
;>" .-'6.-V.1.%*
•X}X-
ccu
T
3
D
CCCD
SOIL
CLASS
CUSCS)
M-GM
M-GM
SM
TRENCH T110
ELEV. (MSL.) 320 DATE COMPLETED 11/16/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOIL
LINDAVISTA FORMATION
Very dense, damp, reddish-brown, conglomeratic
SANDSTONE, massive, with some clay and
cemented lenses
-Irregular deposition contact nearly horizontal -
SANTIAGO FORMATION
Dense, damp, light tan, Silty, fine SANDSTONE
-Massive to horizontally bedded
TRENCH TERMINATED AT 8 FEET
ZLU~11 C_) i *
<E^\
H«3
UJ"EQQ. w
|o
a&a
^
l^QJ
ffi f~*** ^u
[J c^
^~ ^3o
Figure A-165, Log of Trench T110 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
§1 ... 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 WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
PROJECT NO. 06403-12-01
DEPTH
IN
FEET
- 2 -
- 4 -
-
- 6 -
-
SAMPLE
NO.
IDo
o
1—H
d ! .'1.
'T
^X^yf'$•Xx**!
•fcvt-*L*J* r
|:[:]:|tj
I1!
i*['3'if*
O'u
T
z
o
u>
SOIL
CLASS
(USCS)
SM
SC
SM
TRENCH Till
ELEV. (MSL.) 315 DATE COMPLETED 11/16/99
EQUIPMENT TRACKHOE ID 555 24"
MATERIAL DESCRIPTION
_. TOPSOIL _
\ Loose, dry, light brown, Silty, Gravelly SAND /
SANTIAGO FORMATION
, Medium dense damp reddish-brown Clayey fine
v SANDSTONE /
Y -Very weathered /
Very dense, damp, light tan, Silty, fine
SANDSTONE
-3" olive CLAYSTONE layer, horizontal
i
TRENCH TERMINATED AT 8 FEET
ZLU^
it 1 ) i *i|£
^Sg
LU^CD
>•
il^%
Sli° •
aw
Q
~
L)Ja
g|
o
Figure A-166, Log of Trench Till LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL E ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE T. ... 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
_
- 2 -
- 4 -
-
- 6 -
SAMPLE
NO.THOL06YH_j
» » • » ».".*.'.'.
•V. .'.:•:•: &
X** XvXv
•:^'"."
•h. -
'•i "^ -
•[•!'!
oe
LJNDWATEQj;
0
SOIL
CLASS
(USCS)
GP
SM
TRENCH T112
ELEV. (MSL.) 319 DATE COMPLETED 11/16/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
LINDAVISTA FORMATION
Dense, damp, reddish-brown, very Gravelly
SANDSTONE, with some clay, scattered, oversize
( > 1 2 " diameter) boulders
__ -Irregular, near-horizontal contact
SANTIAGO FORMATION
Dense, damp, light tan-brown, Silty, fine SAND
TRENCH TERMINATED AT 8 FEET "RATIONSTANCEIS/FT.)LuHo
u^mQ- ^
^^^ •
^^a
'
iMyotr=-2E0U
Figure A-167, Log of Trench T112 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST
... DISTURBED OR BAG SAMPLE ... 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
- 4 -
~
- 6 -
SAMPLE
NO.
fc
LITHOLO'd i -1
ftx**>v
*._x v*^
*/**L
t\r$\
•/*_/*'
pif*^ '
ceu
GROUNDUASOIL
CLASS
(USCS)
SM
SC
TRENCH T113
ELEV. (MSL.) 285 DATE COMPLETED 11/16/99
EQUIPMENT TRACKHOE JD 555 24"
MATERIAL DESCRIPTION
TOPSOTL
Loose, dry, light brown, Silty, Gravelly SAND
~^\ -Porous /~
SANTIAGO FORMATION
Medium dense, damp, reddish-brown, very Clayey,
fine SANDSTONE, massive
-Becomes very dense
TRENCH TERMINATED AT 7 FEET
Sm^ENETRATICJESISTANCBLOMS/FT.OL ^
•>-
^*^ •
x_^L
a
^MOISTUREONTENT Ou
Figure A-168, Log of Trench T113 LCG
SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED)
ii ... DISTURBED OR BAG SAMPLE E ... CHUNK SAMPLE T. ... 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.
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/30/99
ELEVATION
360 FEET MSL
AIR TRACK
BORING AT-1
Marginal to
Non-
Rippable Rippable Non-Rippable
i ii
! '
0 1
10
15
20
0)
&
X 25
Q_UJQ
30
35
40
45
50
i i
saasa
••— i
"""a™
z&sassm
g^^^^QSBB
gS^S!JSffijBB88
5j2^23S^^S
J^WMyHfaityttUl&ij
^23S33S^BH
^nB^rBTffi^Agg
2S^ES3BE^B
S3
a
SHHS
ggg^SSBS53
«nsi
gjj^jMJ^g^j^^
•!•*•
«%l»HftfH
iiiMMMMlt
sSSiStbiitJ
is,
^^^^^
^^^^^^^^^^JJJ
1
a
jjg^g^^j
jj^SSI
3
O
GEOCON
i
0 10 20 30 40 50 60 70 80 90 100 110
DRILL RATE (seconds per foot)
06403-12-01 LA COSTA GREENS
FIG. A-169
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/30/99
ELEVATION
335 FEET MSL
AIR TRACK
BORING AT-2
Marginal to
Non-
Rippable Rippable Non-Rippable
i
! i
0 ^m
KSSL
10
15
20
*-i"(0&
x 25
tLLI
Q
30
35
40
45
50
I'iniiiiiiiiiiiiiiMiii
TTmrnm
^^^^^^^^^^^^jj^^afltigga!==
Bm
•
•Bimujiiiiimu
^^^^^^^^
_
S22SSziSSS2
H
m
5^3
GEOCON
I
-
< s
D 10 20 30 40 50 60 70 80 90 100 110
DRILL RATE (seconds per foot)
QS4Q3-12-01 LA COSTA GREENS
FIG. A-170
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/29/99
ELEVATION
225 FEET MSL
AIR TRACK --
BORING AT-3 feS
GImo
Marginal to
•*P8^
]OCON
Non-
Rippable Rjppable Non-Rippable
0
5
10
15
20
0
X 25
t
30
35
40
45
50
«
I
^-4~iS-
•— =mmmm
''uwwwmmiiu
•"'i— Tr-"
SBfljfimSttttUBi
I'liiii'ftiiind
^^^^^^2^SBigjiljmy^BBffBPBfg
JQ££^^QQ£^Qaas^jgi^^io^
j-^&^jj!S^^!^iJ!i
f«MMBI^^
^fiTMf1^!!!!!!
a
ffij^^^BS^^SI
3B^
^^JB
HEHBnrnfTTT-n
^^^s^g^g
^^^^SBBH^^ffll
BOBHB
^^ajM.^^^_^^^^^_^^
^^^^Ml^'i^M,r!i=?^!Et^tSSiJ^^
•
•
i
i
i
iiil Hul i n ii ii
^^ffP™^P^tP^
'
D 10 20 30 40 50 60 70 80 90 100 110
DRILL RATE (seconds per foot)
OS403-12-01 LA COSTA GREENS FIG. A-171
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/29/99
ELEVATION
225 FEET MSL
AIR TRACK
BORING AT-4
Marginal to
Non-
Rippable Rjppable Non-Rippable
i!
0
•
10
15
20
•s>s
x 25I-Q_LLJ
Q
30
35
40
45
50
muiMM
SLml
mamm
^••Safcffi&ig&iffi--'
—
ro
jjj2!SS3S^SSS
( """*"
•
^^^^^^gj^^j^^^jjij^p
»^A£feM)Biffll««|
i
SJjS^j&lWiJWjffiiffl
tJiM^tefaiJ^gibi^
B»s»a'i«vmv«-o)! , ;«*x j**
GBOCON
D 10 20 30 40 50 60 70 80 90 1 00 110
DRILL RATE (seconds per foot)
06403-12-01 IA COSTA GRSEHS FIG. A-172
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/29/99
ELEVATION
250 FEET MSL
CD
X 25
Q-LLJQ
30
35
40
45
50
AIR TRACK
BORING AT-5
Marginal to
Non-
Rippable Rippable Non-Rippable
GEOCON
0 10 20 30 40 50 60 70 80 90 100 110
DRILL RATE (seconds per foot)
QS4Q3-12-01 LA COSTA SHEENS FIG. A-173
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/29/99
ELEVATION
350 FEET MSL
AIR TRACK
BORING AT-6
Marginal to
Non-
Rippable Rippable Non-Rippable
ii! !
i !
0 ^^Btega^BRSSg^^
10
15
20
"Sa
x 25h-o.
B
30
35
40
45
50
•
a
m^m
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06403-12-01 LA COSTA GREENS FIG. A-174
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/29/99
ELEVATION
255 FEET MSL
AIR TRACK
BORING AT-7
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06403-12-01 LA COSTA GREENS FIG. A-175
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/29/99
ELEVATION
240 FEET MSL
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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
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06403-12-01 LA COSTA GREENS
FIG. A-177
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/29/99
ELEVATION
220 FEET MSL
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05403-12-01 LA COSTA GREENS FIG. A-178
•m
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06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/30/99
ELEVATION
245 FEET MSL
AIR TRACK
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06403-12-01 IA COSTA GREENS FIG. A-179
06403-12-01 VILLAGES OF LA COSTA - THE GREENS RATION
26S FEET MSL
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06403-12-01 LA COSTA GREENS FIG. A-180
06403-n-oi VILLAGES OF LA COSTA - THE GREENS 11/30/99
ELEVATION
380 FEET MSL
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06403-12-01 LA COSTA GREENS FIG. A-181
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/30/99
ELEVATION
385 FEET MSL
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05403-12-01 IA COSTA GRBENS FIG. A-182
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/30/99
ELEVATION
355 FEET MSL
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05-403-12-01 LA COSTA GRSENS FIG. A-183
06403-12-01 VILLAGES OF LA COSTA - THE GREENS 11/30/99
ELEVATION
375 FEET MSL
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06403-12-01 LA COSTA SREENS FIG. A-184
06403-12-01 VILLAGES OF LA COSTA - THE GREENS
380 FEET MSL
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064,03-12-01 LA COSTA GREENS FIG. A-185
APPENDIX B
LABORATORY TESTING
Laboratory tests were performed 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.
LB1-2
LB1-11
LB3-3
LB9-4
LB 10-2
T23-2
T24-2
T85-1
T 108-1
Description
Yellowish brown, Silty, fine to coarse SAND
Grayish green, Sandy CLAY
Greenish gray, Silty CLAY
Greenish gray, Silty CLAY
Light gray, Silty, fine SAND
Dark grayish brown, Sandy CLAY
Reddish brown, Clayey, fine SAND
Dark olive-brown, Sandy CLAY
Reddish brown, Silty, fine to medium SAND
Maximum Dry
Density (pcf)
120.4
113.5
112.2
115.8
114.0
122.0
123.0
121.1
123.9
Optimum Moisture
Content (% dry wt.)
12.0
1-6.5
17.0
15.4
14.2
11.4
11.0
12.4
10.0
Project No. 06403-12-03 -B-l-June25,2001
TABLE B-ll
SUMMARY OF DIRECT SHEAR TEST RESULTS
Sample No.
LB3-3*
LB5-4
LB 10-2*
LB1-3
LB 1-4
LB 1-9
Dry Density
(pcf)
100.5
117.2
103.1
124.8
112.2
117.7
Moisture Content
(%)
17.7
16.7
13.9
10.8
20.2
16.2
Unit Cohesion
(psf)
610
610
460
1020
830
200
Angle of Shear
Resistance (degrees)
27
29
35
43
15
38
"Samples remolded to 90 percent relative density at or near optimum moisture content.
TABLE B-lll
SUMMARY OF LABORATORY EXPANSION INDEX TEST RESULTS
Sample
No.
LB 1-2
LB 18-9
LB 1-11
T23-2
T85-1
T 103-2
Moisture Content
Before Test (%)
9 -
11.3
14.2
10.1
10.0
12.1
After Test (%)
20.9
30.3
34.6
29.3
28.9
32.4
Dry
Density (pcf)
114.3
105.1
96.8
109.5
110.1
103.0
Expansion
Index
6
57
62
55
57
70
Project No. 06403-12-03 - B-2 -June 25,2001
PROJECT NO. 06403-12-01
100
OB7<O
anO<O
| ™
HLU
* »CO
£Ku 50
HLL.
t; 40
UluQ;u 30
20
10
0
GRAVEL
COARSE FINE
1-1/2" 3/4" 3/8"1 f IV -L.
1
OBM=
SAND
:OARSE
^1=
iii
=5
|l
MEDIUM FINE SILT OR CLAY
U. S. STANDARD SIEVE SIZE
16 30 503 | 20 40 60 100 200
^t """"s
SiS s
^J
^
1
1
^V\
1
\
^V^\
^1
X
10 1 0.1 0.01 0.001
GRAIN SIZE IN MILLIMETERS
•
m
A
SAMPLE
SB3-2
SB4-2
SB6-2
Depth (ft)
10.0
10.0
10.0
CLASSIFICATION
(CL) Yellowish-brown, Sandy CLAY
(SM) Dark yellowish-brown, Silty SAND
(SM) Dark yellowish-orange, Silty SAND
VAT WC LL PL PI
GRADATION CURVE
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
LCG Figure B-l
PROJECT NO. 06403-12-01
GRAVEL
COARSE FINE
SAND
COARSE MEDIUM FINE SILT OR CLAY
3" 1-1/2" 3/4" 3/8" 4I00|i i i li i—4 *n< ,-m
U. S. STANDARD SIEVE SIZE
16 30 50
1 0.1
GRAIN SIZE IN MILLIMETERS
0.01 0.001
n
A
SAMPLE
SB7-3
SB8-2
SB8-4
Depth (ft)
15.0
10.0
20.0
CLASSIFICATION
(SM) Light olive-brown, Silty SAND
(CL) Yellowish-brown, Sandy CLAY
(CL) Dark yellowish-orange, Sandy CLAY
VAT WC LL PL PI
GRADATION CURVE
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
ICG Figure B-2
PROJECT NO. 06403-12-01
GRAVEL
COARSE FINE
SAND
:OARSE MEDIUM
u. s. s
8 16
3" 1-1/2" 3/4" 3/8" 4 TlO I 21 BO T A A. i1I9U
onyio
80
I 70
HUJ= .
03
Q;u 50
HU_
H; 40
UJUQ;tu 30Q-
20
10
0
T T
TA
0
FINE SILT OR CLAY
JSDARD SIEVE SIZE
!0 504p 60 100 200
11=4— i \\|1
\
\>
1
\
10 1 0.1 0.01 0.001
GRAIN SIZE IN MILLIMETERS
*
SAMPLE
SB 10-3
Depth (ft)
15.0
CLASSIFICATION
(SM) Yellowish-brown, Silty SAND
VAT WC 1
23.7
JL PL PI
GRADATION CURVE
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
LCG Figure B-3
PROJECT NO. 06403-12-01
oH
QH
Ocn
ou
Ulu
QLLU
CL
SAMPLE NO. SB3-3
-4
-2
0.1
\
\
\
\
10 100
APPLIED PRESSURE (ksf)
Initial Dry Density (pel)
Initial Water Content (%)
107.0
22.6
Initial Saturation (%)
Sample Saturated at (ksf)
100 +
0.5
CONSOLIDATION CURVE
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
LCG Figure B-4
PROJECT NO. 06403-12-01
PERCENT CONSOLIDATION•o CD oo o) *» ro CD ro *•SAMPLE NO. SB7-4
••— ^
— — —
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I
0.1 1 10 100
APPLIED PRESSURE (ksf)
Initial Dry Density (pcf)
Initial Water Content (%)
92.4
5.4
Initial Saturation (%)
Sample Saturated at (ksf)
18.1
0.5
CONSOLIDATION CURVE
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
LCG Figure B-5
PROJECT NO. 06403-12-01
SAMPLE NO. SB8-3
*PERCENT CONSOLIDATIONH> I-" 'rocscoo)-P»roG)ro4^---. -
—--,
1
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1
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0.1 1 10 100
APPLIED PRESSURE (ksf)
Initial Dry Density (pcf)
Initial Water Content (%)
113.9
18.2
Initial Saturation (%)
Sample Saturated at (ksf)
100+
.5
CONSOLIDATION CURVE
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
LCG Figure B-6
PROJECT NO. 06403-12-01
SAMPLE NO. SB10-3
PERCENT CONSOLIDATIONKGJOOCD^WOW-*\
\
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^
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ta^i
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*-•».
^11 s.\
_ =
\
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V\V,
*'" *.
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V
H 1
-
01 1 10 100
APPLIED PRESSURE (ksf)
Initial Dry Density (pcf)
Initial Water Content (%)
106.7
23.7
Initial Saturation (%)
Sample Saturated at (ksf)
100+
0.5
CONSOLIDATION CURVE
VILLAGES OF LA COSTA - THE GREENS '
CARLSBAD, CALIFORNIA
LCG Figure B-7
PROJECT NO. 06403-12-01
oH
aH
oCO
oCJ
LU
CJ
LUCL
SAMPLE NO. SB11-2
-4
-2
10
0.1 10
APPLIED PRESSURE (ksf)
Initial Dry Density (pcf)
Initial Water Content (%)
116.5
17.2
Initial Saturation (%)
Sample Saturated at (ksf)
100
100 +
.5
CONSOLIDATION CURVE
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
LCG Figure B-8
To
o:
•<Q
_c
o
COO2:
Q
<UJo:
Q
SAMPLE NO. SB3-3 APPLIED PRESSURE (ksf)
2180
2200
2220
"-' 2240
CD
X 2260
2280
2300
2320
2340
VTIME
10 12
(Minutes)
SAMPLE NO. SB7-4 APPLIED PRESSURE (ksf)
2370
2380
2390
2400
2410
2420
2430
VTIME
10 12
(Minutes)
GEOCON <*S)
INCORPORATED ^SfSr
GEOTECHNICAL CONSULTANTS
6960 FLANDERS DRIVE - SAN DIEGO, CALIFORNIA 92121-2974
PHONE 619 558-6900 - FAX 619 558-6159
AS / RSS DSK/EOOOO
TIME RATE CURVE
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
DATE 03-24-2000 PROJECT NO. 06403 - 12 - 01 FIG. B-9
SAMPLE NO. SB10-3
1_]
To
X
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HI 2515
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4
• ••=*.-.«•a^ •• • ss
APPLIED PRESSURE 2 (ksf)
^ Z •—•— i•K a ^— «• •• = = == 3
68 10 12
VTIME (Minutes)
APPLIED PRESSURE (ksf)
4 6 8
VTIME (Minutes)
10 12
GEOCON ^
INCORPORATED ^SW^
GEOTECHNICAL CONSULTANTS
6960 FLANDERS DRIVE - SAN DIEGO, CALIFORNIA 92121-2974
PHONE 619 558-6900 • FAX 619 558-6159
AS / RSS DSK/EOOOO
TIME RATE CURVE
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
DATE 03-24-2000 PROJECT NO. 06403 - 12 - 01 FIG. B-10
SAMPLE NO. SB11-2 APPLIED PRESSURE 2 (ksf)
c
^o
CO
CD
Q
<LLJ
2320
2330
2340
2350
2360
2370
2380
VTIME (Minutes)
10 12
SAMPLE NO. SB11 -2 APPLIED PRESSURE 4 (ksf)
2410
CO
CDZ
Q55
QL
<
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2420
2430
2450
2460
2470
2480
VTIME
10 12
(Minutes)
GEOCON ®>
INCORPORATED ^SS^
GEOTECHNICAL CONSULTANTS
6960 FLANDERS DRIVE - SAN DIEGO, CALIFORNIA 92121 - 2974
PHONE 619 558-6900 - FAX 619 558-6159
AS / RSS DSK/EOOOO
TIME RATE CURVE
VILLAGES OF LA COSTA - THE GREENS
CARLSBAD, CALIFORNIA
DATE 03-24-2000 PROJECT NO. 06403 - 12 - 01 FIG. B-11
6403TR2/RSS