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Home My WebLink AboutEIR 91-01; Rancho Santa Fe Rd Realignment and Mass Grading; ADDENDUM TO GEOLOGIC AND SOIL INVESTIGATION FOR RANCHO SANTA FE ROAD REALIGNMENT; 1990-07-01ADDENDUM TO SOIL AND GEOLOGIC INVESTIGATION FOR RANCHO SANTA FE ROAD ALIGNMENT CARLSBAD, CALIFORNIA PREPARED FOR THE FIELDSTONE COMPANY SAN DIEGO, CALIFORNIA PREPARED BY GEOCON INCORPORATED SAN DIEGO, CALIFORNIA JULY 1990 GEOCON INCORPORATED Geotechnical Engineers and Engineering Geologists File No. 04367-04-02 July 10, 1990 The Fieldstone Company 5465 Morehouse Drive, Suite 250 San Diego, Califomia 92121 Attention: Mr. John Barone Subject: RANCHO SANTA FE ROAD ALIGNMENT CARLSBAD, CALIFORNIA ADDENDUM TO SOIL AND GEOLOGIC INVESTIGATION References: 1) Supplemental Soil and Geolo^c Investigation for Rancho Santa Fe Road Alignment; Carlsbad, Califomia, pre- pared by Geocon Incorporated, dated Januarys, 1990. 2) Rancho Santa Fe Road Conceptual Mass Grading Exhibit, 1 inch equals 200 feet, prepared by Project Design Consultants, revised date June 22, 1990. Gentlemen: In accordance with your request, this addendum letter updates the referenced soil and geologic report by submitting herein our revised grading specifications. We have also reviewed the referenced grading plan to delineate subdrain locations within the proposed fill areas. The recommendations presented in the revised grading specifications supersede those recommendations previously presented in the grading specifications ofthe referenced report. Prior to utilizing the updated grading specifications for bidding purposes, it is recommended that the specifications be reviewed and approved by the City of Carlsbad Engineering Department. The referenced grading plan modified to include the proposed locations of the subdrains is attached as Figure 1. The locations and lengths ofthe subdrains presented are approximate and may be revised during grading as appropriate. The construction of the subdrains should be performed in accordance with Figure 3 of the referenced report with the following modification: The option to substitute Class n permeable material for open-graded aggregate should be deleted from the subdrain detail due to extended subdrain lengths. 6960 Flanders Drive San Diego, CA 92121-2974 619 558-6900 FAX 619 558-6159 File No. 04367-04-02 July 10, 1990 We appreciate the opportunity to be of continued service. Should you have questions regarding this addendum letter, please contact the undersigned at your convenience. Very truly yours, GEOCON INCORPORATED Monte L. Murbach RCE 22527" ^ ^ V Project Geologist MLM:DFL:slc enclosure(s) (2) addressee (6) Project Design Consultants Attention: Mr. Brad Smith (1) Fieldstone/La Costa Associates Attention: Mr. Doug Avis RECOMMENDED GRADING SPECIFICATIONS 1 GENERAL 1.1 These Recommended Grading Specifications shall be used in conjunction with the Geotechnical Report for the project prepared by Geocon Incorporated. The recommendations contained in the text of the Geotechnical Report are a part of the earthwork and grading specifications and shaU supersede the provisions contained hereinafter in the case of conflict. 1.2 Prior to the commencement of grading, a geotechnical consultant (Consultant) shaU be employed for the purpose of observing earthwork procedures and testing the fills for substantial conformance with the recommendations of the Geotech- mcal Report and these specifications. It wiU be necessary that the Consultant provide adequate testing and observation services so that he may determine that, in his opinion, the work was performed in substantial conformance with these specifications. It shall be the responsibility of the Contractor to assist the Consultant and keep him apprised of work schedules and changes so that personnel may be scheduled accordingly. It shaU be the sole responsibility of the Contractor to provide adequate equipment and methods to accomphsh the work in accordance with applicable grading codes or agency ordinances, these specifications and the approved grading plans. If, in the opmion of the Consultant, unsatisfactory conditions such as questionable soil matenals, poor moisture condition, inadequate compaction, adverse weather, and so forth, result in a quaUty of work not in conformance with these specifications the Consultant will be empowered to reject the work and recommend to the Owner that construction be stopped until the unacceptable conditions are corrected. 1.3 DEFINITIONS 2.1 Owner shaU refer to the owner of the property or the entity on whose behalf the gradmg work is being performed and who has contracted with the Contractor to have grading performed. 2.2 Contractor shaU refer to the Contractor performing the site grading work. 2.3 Civil Engineer or Engineer of Work shaU refer to the Cahfornia licensed CivU Engineer or consultmg firm responsible for preparation of the grading plans surveying and verifymg as-graded topography. Owner, who to a CaJ.'f^ • Project. TBRMr. ended '•'•^ fffi^i^ are defined ' '^'^ -^^Uiiis, ^•^•2 f»-™clcmb,„.,. ^""'^^'"Ske. '0 percent by i^°<^k fills are definw '^^fined as 3 fggj . "ciined as fin fte Co„.„„„„, te. spongy, m fffl,. ""^^ ""^Uilabfe „a,„,e a. w , 3.1.3 3.3 Materials used for fUl, either unported or on-site, shaU not contam hazardous materials as defined by the CaUfornia Code of Regulations, Title 22, Division 4, Chapter 30, Articles 9 and 10; 40CFR; and any other appUcable local, state or federal laws. The Consultant shaU not be responsible for the identification or analysis of the potential presence of hazardous materials. However, if observations, odors or soU discoloration cause Consultant to suspect the presence of hazardous materials, the Consultant may request from the Owner the termination of gradmg operations within the affected area. Prior to resuming grading operations, the Owner shaU provided a written report to the Consultant indicating that the suspected materials are not hazardous as defined by appUcable laws and regulations. 3.4 The outer 15 feet of soil-rock fUl slopes, measured horizontaUy, should be composed of properly compacted soil fUl materials approved by the Consultant. Rock fUl may extend to the slope face, provided that the slope is not steeper than 2:1 (horizontahvertical) and a soU layer no thicker than 12 inches is track-waUced onto the face for landscapmg purposes. This procedure may be utUized, provided it is acceptable to the governing agency. Owner and Consultant. 3.5 Representative samples of soU materials to be used for fUl shaU be tested m the laboratory by the Consultant to determine the maximum density, optimum moisture content, and, where appropriate, shear strength, expansion, and gradation characteristics of the soU. 3.6 During grading, soU or groundwater conditions other than those identified in the Geotechnical Report may be encountered by the Contractor. The Consultant shaU be notified immediately to evaluate the significance of the unanticipated condition. 4 CLEARING AND PREPARING AREAS TO BE FILLED 4.1 Areas to be excavated and fUled shaU be cleared and grubbed. Clearing shaU consist of complete removal above the ground surface of trees, stumps, brush, vegetation, man-made structures and simUar debris. Grubbing shaU consist of removal of stumps, roots, buried logs and other unsuitable material and shaU be performed in areas to be graded. Roots and other projections exceeding 1-1/2 mches m diameter shaU be removed to a depth of 3 feet below the surface of the ground. Borrow areas shaU be grubbed to the extent necessary to provide suitable fiU materials. 4.2 Any asphalt pavement material removed during clearing operations should be properly disposed at an approved off-site facUity. Concrete fragments which are free of reinforcmg steel may be placed in fUls, provided they are placed m accordance with Section 6.2 or 6.3 of this document. 4.3 After clearmg and grubbmg of organic matter or other unsuitable material, loose or porous soUs shaU be removed to the depth recommended m the Geotechnical Report. The depth of removal and compaction shaU be observed and approved by a representative of the Consultant. The exposed surface shaU then be plowed or scarified to a minhnum depth of 6 mches and untU the surface is free from uneven features that would tend to prevent uniform compaction by the equipment to be used. 4.4 Where the slope ratio of the origmal ground is steeper than 6:1 (horizontahvertical), or where recommended by the Consultant, the origmal ground should be benched m accordance with the foUowmg Illustration. TYPICAL BENCHING DETAIL FINISH GRADE FINISH SLOPE SURFACE REMOVE AS RECOMUENOED Br SOIL ENGINEER SLOPE TO BE SUCH THAT SLOUGHINO on SLIDING - OOES NOT OCCUR NO SCALE NOTES: (1) Key width "B" should be a mmimum of 10 feet wide, or sufficiently wide to permit complete coverage with the compaction equipment used. The base of the key should be graded horizontal, or mcUned sUghtly mto the natural slope. (2) The outside of the bottom key should be below the topsoU or unsuitable surficial material and at least 2 feet mto dense formational material. Where hard rock is exposed in the bottom of the key, the depth and configuration of the key may be modified as approved by the Consultant. 4.5 After areas to receive fiU have been cleared, plowed or scarified, the surface should be disced or bladed by the Contractor untU it is uniform and free from large clods. The area should then be moisture conditioned to achieve the proper moisture content, and compacted as recommended in Section 6.0 of these specifications. COMPACTION EQUIPMENT 5.1 Compaction of soil or soil-rock fiU shaU be accompUshed by sheepsfoot or segmented-steel wheeled roUers, vibratory roUers, multiple-wheel pneumatic-tired roUers, or other types of acceptable compaction equipment. Equipment shaU be of such a design that it wiU be capable of compactmg the soil or soil-rock fUl to the specified relative compaction at the specified moisture content. 5.2 Compaction of rock fUls shaU be performed m accordance with Section 6.3. 6 PLACING, SPREADING AND COMPACTION OF FILL MATERIAL 6.1 Soil fUl, as defined m Paragraph 3.1.1, shaU be placed by the Contractor in accordance with the foUowing recommendations: 6.1.1 Soil fUl shaU be placed by the Contractor in layers that, when compacted, should generaUy not exceed 8 inches. Each layer shaU be spread evenly and shaU be thoroughly mixed during spreading to obtain uniformity of material and moisture in each layer. The entire fiU shaU be constructed as a unit in nearly level lifts. Rock materials greater than 12 inches in maximum dimension shaU be placed in accordance whh Section 6.2 or 6.3 of these specifications. 6.1.2 In general, the soil fUl shaU be compacted at a moisture content at or above the optimum moisture content as determined by ASTM D1557-78. 6.1.3 6.1.4 6.1.5 When the moisture content of soil fiU is below that specified by the Consultant, water shaU be added by the Contractor untU the moisture content is in the range specified. When the moisture content of the soil fUl is above the range specified by the Consultant or too wet to achieve proper compaction, the soil fUl shaU be aerated by the Contractor by blading/mixing, or other satisfactory methods untU the moisture content is within the range specified. After each layer has been placed, mixed, and spread evenly, it shaU be thoroughly compacted by the Contractor to a relative compaction of at least 90 percent. Relative compaction is defined as the ratio (expressed in percent) of the in-place dry density of the compacted fUl to the maximum laboratory dry density as determined in accordance with ASTM D1557-78. Compaction shaU be continuous over the entire area, and compaction equipment shaU make sufficient passes so that the specified minimum density has been achieved throughout the entire fUl. 6.1.6 SoUs havmg an Expansion Index of greater than 50 may be used in fUls if placed at least 3 feet below finish pad grade and should be compacted at a nioisture content generaUy 2 to 4 percent greater than the optunum moisture content for the materiaL 6.1.7 Properly compacted soil fUl shaU extend to the design surface of fUl slopes. To achieve proper compaction, it is recommended that fUl slopes be over- buUt by at least 3 feet and then cut to the design grade. This procedure is considered preferable to track-waUcmg of slopes, as described in the foUowing paragraph. 6.1.8 As an altemative to over-buUding of slopes, slope faces may be back-roUed with a heavy-duty loaded sheepsfoot or vibratory roUer at maximum 4-foot fill height intervals. Upon completion, slopes should then be track-waUced with a D-8 dozer or simUar equipment, such that a dozer track covers aU slope surfaces at least twice. 6.2 Soil-rock fUl, as defined in Paragraph 3.1.2, shaU be placed by the Contractor in accordance with the foUowmg recommendations: 6.2.1 Rocks larger than 12 inches but less than 4 feet m maximum dimension may be mcorporated into the compacted soil fUl, but shaU be UmUed to the area measured 15 feet minknum horizontaUy from the slope face and 5 feet below fmish grade or 3 feet below the deepest utUity, whichever is deeper. 6.2.2 Rocks or rock fragments up to 4 feet m maxknum dknension may either be mdividuaUy placed or placed in windrows. Under certam conditions, rocks or rock fragments up to 10 feet ki maximum dknension may be placed using simUar methods. The acceptabUity of placing rock materials greater than 4 feet in maximum dimension shaU be evaluated durmg grading, as specU"ic cases arise and shaU be approved by the Consultant prior to placement. 6.2.3 For individual placement, sufficient space shaU be provided between rocks to aUow for passage of compaction equipment. 6.2.4 For windrow placement, the rocks should be placed in trenches excavated m properly compacted soil fUl. Trenches should be approximately 5 feet wide and 4 feet deep in maximum dimension. The voids around and beneath rocks should be fUled with approved granular soU having a Sand Equivalent of 30 or greater and should be compacted by flooding. Windrows may also be placed utUizing an "open-face" method in lieu of the trench procedure, however, this method should first be approved by the Consultant. 6.2.5 Windrows should generaUy be paraUel to each other and may be placed either paraUel to or perpendicular to the face of the slope depending on the 6.3 6.3.1 • „ for windrows shall be liorizontal spacing tor wi courses sue geometry. The mimmum jtHaSSe-r ^^^^^^ t feet center-to-center ^„i„-^um "f^'SS to the bottom of to feS ftom the top of a lo«er «mdr Ae nt« h^8h« "tad"""- ^^ed granular soU , fill plaoemervt and "^"1 Consultant or h,s ^^wSo—be continuously observed by Representative. ^ ^ ^ ^^^^ ^ ^^^^^^ ^ contractor m controUed drarnage facOit v'ater. ^^^t. Placement shall be ^rocfrnt^J^^an^^^^^^^^^^^ placement. Compaction _ ? ^^^^^ required compaction or SSfp—maybeperformed .33 ltebearl„.tes.s,ln—^^^^^^^ oerformed, a minimum on f ^^.j,in,um relative ^^^^ ?he properly compacted ^ ^ performed onjr percent) ^^^^^ ^turVas-^^^^^^ ^''^ Lvlna two passes, four pasbc required tor me . ^y^gsoi/ r:™ectWy The "J/e uWs of the plate J^fj* number determined -mp-nS'^^^^^^^^^^^ ,he ^efleX^::p Sion e,uipment tai and the rocfc «'^^^J^u^ber of pa«es <>' ^flections are equal »Srn-sary un>U^ so. f^. In no 6.3.4 A representative of the Consultant shaU be present during rock fUl operations to verify that the mmimum number of "passes" have been obtakied, that water is being properly appUed and that specified procedures are bemg foUowed. The actual number of plate bearmg tests wUl be determmed by the Consultant durmg gradmg. In general, at least one test should be performed for each approxunately 5,000 to 10,000 cubic yards of rock fiU placed. 6.3.5 Test pks shaU be excavated by the Contractor so that the Consultant can state that, in his opmion, sufficient water is present and that voids between large rocks are properly fUled with smaUer rock material. In-place density testing wUl not be requked ki the rock fUls. 6.3.6 To reduce the potential for "pipkig" of fmes mto the rock fUl from overlymg soil fUl material, a 2-foot layer of graded fUter material shaU be placed above the uppermost Uft of rock fUl. The need to place graded fUter material below the rock should be determmed by the Consultant prior to commencmg grading. The gradation of the graded fUter material wUl be determmed at the time the rock fUl is bemg excavated. Materials typical of the rock fUl should be submitted to the Consuhant m a tknely manner, to aUow design of the graded fUter prior to the commencement of rock fUl placement. 6.3.7 AU rock fUl placement shaU be continuously observed during placement by representatives of the Consultant. 7 OBSERVATION AND TESTING 7.1 The Consultant shaU be the Owners representative to observe and perform tests durmg clearmg, grubbing, fUling and compaction operations. In general, no more than 2 feet m vertical elevation ol soil or soil-rock fUl shaU be placed without at least one field density test being performed within that mterval In addition, a mmimum of one field density test shaU be performed for every 2,000 cubic yards of soil or soil-rock fiU placed and compacted. 7.2 The Consultant shaU perform random field density tests of the compacted soil or soil-rock fUl to provide a basis for expressmg an opmion as to whether the fUl material is compacted as specified. Density tests shaU be performed m the compacted materials below any disturbed surface. When these tests mdicate that the density of any layer of fUl or portion thereof is below that specified, the particular layer or areas represented by the test shaU be reworked untU the specified density has been achieved. 7.3 During placement of rock fiU, the Consultant shaU verify that the minimum number of passes have been obtained per the criteria discussed in Section 6.3.3. The Consultant shaU request the excavation of observation pits and may perform plate bearing tests on the placed rock fUls. The observation pits wUl be excavated to provide a basis for expressing an opinion as to whether the rock fUl is properly seated and sufficient moisture has been applied to the material. If performed, work on the ske. The Contractor shaU take remedial measures to prevent erosion of freshly graded areas untU such time as permanent drainage and erosion control features have been instaUed. Areas subjected to erosion or sedunentation shaU be properly prepared m accordance with the Specifications prior to placmg additional fUl or structures. 8.2 After completion of gradmg as observed and tested by the Consultant, no further excavation or fUUng shaU be conducted except m conjunction wkh the services of the Consultant. 9 CERTIFICATIONS AND FINAL REPORTS 9.1 Upon completion of the work. Contractor shaU furnish Owner a certification by the CivU Engmeer statmg that the lots and/or buUding pads are graded to withm 0.1 foot verticaUy of elevations shown on the grading plan and that aU tops and toes of slopes are wkhm 0.5 foot horizontaUy of the poskions shown on the grading plans. After mstaUation of a section of subdram, the project CivU Engineer should survey its location and prepare an as-built plan of the subdram location. The project CivU Engmeer should verky the proper outlet for the subdrains and the Contractor should ensure that the dram system is free of obstructions. 9.2 The Owner is responsible for furnishing a fmal as-graded soU and geologic report satisfactory to the appropriate governing or accepting agencies. The as-graded report should be prepared and signed by a California licensed CivU Engineer experienced in geotechnical engmeermg and by a California Certified Engmeermg Geologist, indicating that the geotechnical aspects of the grading were performed in substantial conformance with the Specifications or approved changes to the Speckications. Geocon Incorporated Form, Revision date: 06/04/90 FUe No. D-4367-H02 January 8, 1990 APPENDIX A FIELD INVESTIGATION The field investigation was performed during the period of September 14 through October 7, 1989 and consisted of geologic mapping by our engineering geologist, excavation of 92 exploratory trenches, 13 exploratory bormgs and the monitoring of 44 hydrauUc "ak-track" driU holes. In addition, 36 seismic survey traverses were run. The approximate locations of the trenches, borings, "ak-track" drUl holes, and seismic traverses are shown on the Geologic Map, Figure 2. The exploratory trenches were excavated by means of a JD 55 tracked backhoe equipped with a 24-inch-wide bucket. An IngersoU-Rand 500 pneumatic percussion, 4 inch-diameter, drUl with hydrauUc puUdown was used for the ak-track holes at selected locations m order to gain additional mformation regarding rippabiUty characteristics of the underlying bedrock. The large-diameter exploratory borings were advanced using a 30-mch-diameter caisson-type rotary bucket drUl. In addition, smaU-diameter rotary wash bormgs were advanced usmg a 5-inch-diameter truck-mounted drUl. The seismic traverses were performed using Geometries, Nknbus, 2-geophone shaUow refraction seismograph. During the investigation, the soUs encountered were visuaUy examined, classified and logged. Logs of the exploratory trenches and borings are presented on Figures A-l through A-107 in Appendix A and depict the soU and geologic condkions encountered and the depth at which samples were obtained. A graphical representation of each of the ak-track borings is presented on Figures A-108 through A-118. The graphs depict the rate (in seconds per foot) at which the drUl penetrated each foot of depth examined. The results of the surveys are tabulated and presented in Tables IA and IB. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >• O o _J o I I- SOIL CLASS CUSCS) BORING SB 1 ELEVATION 327 DATE COMPLETED 9/29/89 EQUIPMENT ROTARY WASH DRILLRIG Z III ^ III " CO lU OT lu ^ m >• go Q: ^ lu J3 Q: OT: - o o 0 2 4 ^ 6 8 MATERIAL DESCRIPTION SBl-1 CL ALLUVIUM Loose, damp to very moist, light brown, SUty CLAY, with little sand and gravel GC BONSALL TONALITE Very dense, saturated, light brown. Gravelly Silty CLAY; slightly weathered fractured, GRANITIC BEDROCK 1 foot/4 minute drill rate 32 BORING TERMINATED AT 8 FEET (REFUSAL DUE TO BEDROCK) Figure A-l Log of Test Boring SB 1, page 1 of 1 LCSE SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B ^ ... DISTURBED OR BAG SAMPLE 0 STANDARD PENETRATION TEST CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. O o _l o X I- H _l SOIL CLASS CUSCS) BORING SB 2 ELEVATION 329 DATE COMPLETED 9/29/89 EQUIPMENT ROTARY WASH DRILLRIG OT H OT III ' lu ^ m OT „• U Q: • IU 0 2 - 4 MATERIAL DESCRIPTION SB2-1 SB2-2 SC ALLUVIUM Medium dense, moist, red brown. Clayey SAND, with some silt 6 - 8 10 12 SB2-3 15 20 119.4 109.1 7.8 20.1 Gravel encountered at 8 feet GC BONSALL TONALITE Very dense, orange to brown. Gravelly Clayey SAND, moderately weathered GRANITIC BEDROCK BORING TERMINATED AT 12 FEET (REFUSAL DUE TO BEDROCK) 3075^ Tr53" T^ Figure A-2 Log of Test Boring SB 2, page 1 of 1 LCSE SAMPLE SYMBOLS ° - '''''''' UNSUCCESSFUL S ... DISTURBED OR BAG SAMPLE B ... STANDARD PENETRATION TEST 0 ... CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >-a o _i o r SOIL CLASS CUSCS) BORING SB 3 ELEVATION 331 DATE COMPLETED 9/29/89 EQUIPMENT ROTARY WASH DRILLRIG S lu o K • l-l y L. -23 '•'OTO lU >• go lu: Q: u MATERIAL DESCRIPTION ALLUVIUM Medium dense, red-brown, damp to moist. Clayey SAND, with some silt and gravels Medium to high frequency of gravels encountered at 2 feet 26 125.4 10.5 BONSALL TONALITE Very dense, light brown. Gravelly, Silty SAND, moderately weathered GRANITIC BEDROCK BORING TERMINATED AT 7 FEET "igure A-3 Log of Test Boring SB 3, page 1 of 1 LCSE SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B ^ ... DISTURBED OR BAG SAMPLE 0 STANDARD PENETRATION TEST CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o _i o X H SOIL CLASS CUSCS) BORING SB 4 ELEVATION 326 DATE COMPLETED 9/29/89 EQUIPMENT ROTARY WASH DRILLRIG z o H : IU z lU Q. IU >• go a. lu J3 OT IU 0 2 - h 4 - 6 - - 8 - 10 12 - h 14 - MATERIAL DESCRIPTION SB4-1 SB4-2 SB4-3 I SB4-4 Ifr 16 SP GP GM ALLUVIUM Loose, saturated, dark brown SAND, with some silt 119.0 16.2 Medium dense to dense, saturated, dark gray-brown. Gravelly SAND, with some sUt 20 105.8 24.5 BONSALL TONALITE Very dense, saturated, gray-brown. Gravelly Silty SAND, moderately weathered GRANITIC BEDROCK DriU rate=l foot/5 minute iO/lU" 129.1 T2X "50/7" BORING TERMINATED AT 16 FEET Figure A-4 Log of Test Boring SB 4, page 1 of 1 LCSE SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B.. S ... DISTURBED OR BAG SAMPLE 0 .. STANDARD PENETRATION TEST CHUNK SAMPLE .. DRIVE SAMPLE CUNDISTURBED) .. 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SOIL CLASS CUSCS) BORING SB 5 ELEVATION 254 DATE COMPLETED 9/29/89 EQUIPMENT ROTARY WASH DRILLRIG Q I OT : >- go a. • IU J5 D: PI- MATERIAL DESCRIPTION - 2 - 4 - I- 6 - 8 10 12 - 14 - 16 18 20 22 -I 24 SB5-1 SB5-2 SB5-3 SB5-4 ML SC ALLUVIUM Loose, slightly moist to very moist, gray-brown, Sandy SILT, with some gravel, little recovery Medium gravel encountered at 4 feet Medium dense, very moist, red-brown. Clayey SAND, with medium gravel SB5-5 K SB5-6 R CL DELMAR FORMATION Stiff, very moist, greenish brown with orange, Silty CLAY, very plastic, highly weathered Very stiff, occasional gravel at 13 feet CL Very stiff, very moist, gray-green, Silty CLAY, with some gravel Hard, slightly weathered at 18 feet 83.9 11 110.8 HT lOO.S TT9X "50/7" 124.1 50/4" 29.9 19.6 2bT 'WT 13.3 BORING TERMINATED AT 25 FEET Figure A-5 Log of Test Boring SB 5, page 1 of 1 LCSE SAMPLE SYMBOLS SAMPLING UNSUCCESSFUL B S ... DISTURBED OR BAG SAMPLE 0 .. STANDARD PENETRATION TEST • .. CHUNK SAMPLE Y. .. DRIVE SAMPLE CUNDISTURBED) .. 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. January 8, 1990 FILE NO. D-4367-402 BORING SB 6 ELEVATION 265 DATE COMPLETED 9/29/89 EQUIPMENT ROTARY WASH DRILLRIG S Ul on* l-l y k- OT ! Ul ^ m Q: S Ul o a. ay MATERIAL DESCRIPTION ALLUVIUM Stiff, red-brown, moist to very moist, Sandy CLAY, trace gravel 109.2 20.9 Light brown, very moist to saturated, Silty CLAY Medium gravel encountered at 8 feet 99.8 27.3 DELMAR FORMATION Very stiff, light gray-green with orange, very moist to saturated, Silty CLAY, with trace gravel, highly weathered 25^ 117.7 T6X Tan to light green-gray, moist, Silty CLAY, with fine to medium sand, moderately weathered Large, fresh boulder encountered at 17 feet, no advance 307r" 125:9^ BORING TERMINATED AT 17.5 FEET Figure A-6 Log of Test Boring SB 6, page 1 of 1 LCSE SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B STANDARD PENETRATION TEST DISTURBED OR BAG SAMPLE 0 ... CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES. January 8, 1990 FILE NO. D-4367-402 BORING LB 1 ELEVATION 263 DATE COMPLETED 9/28/89 EQUIPMENT 30" BUCKET DRILL lu IN OT^ OT °, UJ >- Ul • o a ujJ3 si MATERIAL DESCRIPTION TERRACE DEPOSIT Loose, moist, dark reddish-brown, very Clayey, Pebbly SAND 3 inch thick dark brown, silty sand with carbon and ancient topsoil near horizontal bed at 15 feet Becomes saturated at 17 feet Strong seepage Very irregular, but sharp depositional contact; channel scour SANTIAGO PEAK VOLCANICS Hard, wet, light brown, mottled white, brown, altered andesitic VOLCANIC ROCK: random fracturing abundant; Hydrothermal alteration of rock to a Sandy CLAY Becomes very hard at 27 feet 123.1 10.8 112.1 19.1 TTT Figure A-7 Log of Test Boring LB 1, page 1 of 2 LCSE SAMPLE SYMBOLS SAMPLING UNSUCCESSFUL B S ... DISTURBED OR BAG SAMPLE 0 STANDARD PENETRATION TEST DRIVE SAMPLE CUNDISTURBED) 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 ANO TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >-a o -J o X SOIL CLASS CUSCS) BORING LB 1 ELEVATION 263 EQUIPMENT DATE COMPLETED 9/28/89 30" BUCKET DRILL SUJ': z- UJ UJ ^ m >• I- _ H «u: g' >1- 2fi 30 MATERIAL DESCRIPTION bCJKlNG lERMlNAlED AT 30 FEET igure A-8 Log of Test Boring LB 1, page 2 of 2 LCSE SAMPLE SYMBOLS SAMPLING UNSUCCESSFUL B S ... DISTURBED OR BAG SAMPLE 0 STANDARD PENETRATION TEST • CHUNK SAMPLE 1^ DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > (3 O _1 O I I- SOIL CLASS CUSCS) BORING LB 2 ELEVATION 274 DATE COMPLETED 9/28/89 EQUIPMENT 30" BUCKET DRILL Ul OT§ OT 5 Ul =i >- gu! Ul • tr ^ a Ml oc Pi_ OT UJ - 0 - 6 MATERIAL DESCRIPTION 4 - 10 12 14 - 16 - 18 - 20 - 22 - 24 26 - 28 - LB2-1 CL-SC LB2-4 LANDSLIDE DEBRIS Stiff, damp, reddish-brown, very Sandy- Gravelly CLAY Remolded clay seam 3 inch-8 inch; NlOE, lOSE; wet, plastic, light green-tan at 14.5 feet Soft, moist-wet, Tight green, mottled with red-tan, Sandy CLAY: highly fractured with remolded seams Remolded clay seam 1/8 inch-1/2 inch thick N70E, 8S; light green-tan wet, plastic, slickensided at 17 feet Remolded clay seam; E-W, 5S; 1/8 inch- 1/4 inch thick, wet, slickensided (Base-Of-Slide) at 20 feet ALLUVIUM Dense, moist, mottled tan-red, very Clayey-Gravelly SAND Irregular depositional contact SANTIAGO PEAK VOLCANICS Dense, wet, mottled red-brown, altered- weathered andesitic VOLCANIC ROCK: highly fractured (random) Seepage BORING TERMINATED AT 30 FEET ( - 114.6 16.3 125.6 13.0 Figure A-9 Log of Test Boring LB 2, page 1 of 1 LCSE SAMPLE SYMBOLS *" . SAMPLING UNSUCCESSFUL B.. . STANDARD PENETRATION TEST • .. . DRIVE SAMPLE CUNDISTURBED) SAMPLE SYMBOLS *" . DISTURBED OR BAG SAMPLE 0.. . CHUNK SAMPLE ¥ •• . WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > O -I O X ^- SOIL CLASS CUSCS) BORING LB 3 ELEVATION 298 DATE COMPLETED 9/29/89 EQUIPMENT 30" BUCKET DRILL Ul z- OT^ OT °, UJ m >- OT II* UJ • UJ S 0 2 - 4 - - 6 - 8 - 10 12 h 14 - 16 - 18 - 20 22 24 26 - 28 - LB3-1 LB3-2 SC-GC MATERIAL DESCRIPTION LANDSLIDE DEBRIS Loose, damp, dark reddish-brown Clayey- Sandy COBBLE-GRAVEL 116.3 10.8 12 inch thick sandy clay layer; irregular- indistinct bedding from 14-16 feet Very irregular contact with some (1/2- 1 inch) white wet clay at base SANTIAGO PEAK VOLCANICS Very dense, moist, white-tan-red mottled, very altered, weathered andesitic VOLCANIC ROCK: sheet fractures 1/4 inch-1 inch apart at N45W, 60SW, with random clay seams Figure A-10 Log of Test Boring LB 3, page 1 of 2 LCSE SAMPLE SYMBOLS °- SAMPLING-UNSUCCESSFUL M ... DISTURBED OR BAG SAMPLE B. 0. .. STANDARD PENETRATION .. CHUNK SAMPLE TEST • . .. DRIVE .. WATER SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o -J o I SOIL CLASS CUSCS) BORING LB 3 ELEVATION 298 EQUIPMENT DATE COMPLETED 9/29/89 30" BUCKET DRILL u. OT 5 Ul ^ go Q: • UJ S ^ o o - 30 - 32 MATERIAL DESCRIPTION SANTIAGO PEAK VOLCANICS CON'T BORING TERMINATED AT 32 FEET (NEAR REFUSAL) Figure A-11 Log of Test Boring LB 3, page 2 of 2 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL S ... DISTURBED OR BAG SAMPLE B... STANDARD PENETRATION TEST 0 ... CHUNK SAMPLE 1... DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o J o X SOIL CLASS CUSCS) BORING LB 4 ELEVATION 279 DATE COMPLETED 9/29/89 EQUIPMENT 30" BUCKET DRILL OT gu! go UJ UJ o o - 0 - 4 2 - 8 10 - 12 - 14 - 16 - 18 20 LB4-1 GM-GC: ^8 CL MATERIAL DESCRIPTION LANDSLIDE DEBRIS Loose, dry, dark brown, Clayey-Sandy cobble-boulder GRAVEL: some silt Irregular contact, with wet 1/4 - 1/2 inch clay layer at base Hard, moist, light tan mottled white-red, Sandy CLAY Discontinuous remolded seam; nearly horizontal, wet at 18.5 feet 123.9 13.5 SANTIAGO PEAK VOLCANICS Very dense, moist, light brown, mottled with red, altered and weathered andesitic VOLCANIC ROCK: random fracturing with clay seams. BORING TERMINATED AT 20 FEET (NEAR REFUSAL) Figure A-12 Log of Test Boring LB 4, page 1 of 1 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL S ... DISTURBED OR BAG SAMPLE B... STANDARD PENETRATION TEST 0 ... CHUNK SAMPLE 1... DRIVE SAMPLE CUNDISTURBED) I ... 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. SOIL CLASS CUSCS) BORING LB 5 ELEVATION 297 EQUIPMENT DATE COMPLETED 9/29/89 30" BUCKET DRILL OT§ Ss go Ul b IT OT Ul • O O - 0 MATERIAL DESCRIPTION - 2 - 4 - LB5-1 - 6 8 10 H 12 14 16 LB5-2 CL-CH CL 18 20 22 - 24 LB5-3 SC LANDSLIDE DEBRIS Soft, wet, light tan-green, sandy CLAY Remolded clay seam, green, wet, N50W, lONE; 1/4-1/2 inch thick at 3.5 feet 8-10 inch irregular, possible disturbed transition from clay to weathered formation (base-of-slide) at 7 feet PUSH 1 SANTIAGO PEAK VOLCANICS Hard, moist, light-tan, mottled with green, Sandy CLAY and highly weathered-altered andesitic VOLCANIC ROCK: abundant, random fractures and clay seams. Transition from highly weathered to hydrothermally altered rock (6-8 inch) at 18 feet Very dense, moist, mottlecT brown-green" ~ -red, hydrothermally altered and randomly fractured (1.4-2 inch spacing) andesitic VOLCANIC ROCK BORING TERMINATED AT 25 FEET "111.5 17.9 123.9 13.1 123.5 12.6 Figure A-13 Log of Test Boring LB 5, page 1 of 1 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL H ... DISTURBED OR BAG SAMPLE B... STANDARD PENETRATION TEST 0 ... CHUNK SAMPLE 1... DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 SAMPLE NO. a > Ul a 1-o <i -1 3 o • X Z 1-P H o -1 Q: (9 SOIL CLASS CUSCS) BORING LB 6 ELEVATION 282 DATE COMPLETED 10/2/89 EQUIPMENT 30" BUCKET DRILL S Ul, >-°- oc ^ ui2 a *^ Q U - 0 28 - 2 - - 4 - 6 - LB6-1 - 14 - - 16 - LB6-4 SC-CL CH CL CL MATERIAL DESCRIPTION LANDSLIDE DEBRIS Dense, damp, dark reddish-brown, very Clayey, Gravelly fine SAND Remolded clay seams 1/8 inch to 1/2 inch thick. N65W, 30NE; slickenside-striations perpendicular to strike at 23 and 24 feet 125.9 10.8 Soft, wet, light green-white mottled Sandy CLAY slickensided fractures; disturbed and remolded throughout at I low (<10 degrees) random inclinations, but I \ discontinuous i L : ', Stiff, moist, dark reddish-brown Sandy ," 1 CLAY: with pebbles-mixed i Soft, wet. Tight green, red-white mottled, Silty-Sandy CLAY: slickensided fractures and clay seams are frequent but randomly oriented and very disturbed brecciated character 114.6 17.2 114.0 17.0 =igure A-14 Log of Test Boring LB 6, page 1 of 2 LCSE SAMPLE SYMBOLS ^ "" . SAMPLING UNSUCCESSFUL B.. . STANDARD PENETRATION TEST • .. . DRIVE SAMPLE CUNDISTURBED) ^ .. . DISTURBED OR BAG SAMPLE 0.. . CHUNK SAMPLE . WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. SOIL CLASS CUSCS) BORING LB 6 ELEVATION 282 DATE COMPLETED 10/2/89 EQUIPMENT 30" BUCKET DRILL ?ui- UJ H OTI,* UJ U s- si - o o 30 32 34 36 38 I- 40 MATERIAL DESCRIPTION LB6-5 GC SC Silty-Sandy CLAY CON'T Remolded clay seam; NlOW, lONE; 1/8 inch thick wet, green slickensided at 31.5 feet Remolded clay seam; 1/2-2 inch thick, gray, wet, slickensided and nearly horizontal (base-of-slide) at 33.5 feet ALLUVIUM Dense, moist, light reddish-brown green with gray Clayey-Sandy COBBLE-GRAVEL Very irregular depositional contact; old alluvium at 34.5 feet SANTIAGO PEAK VOLCANICS Very dense, moist, light brown-red, mottled, highly randomly fractured, altered and weathered andesitic VOLCANIC ROCK 124.6 11.7 BORING TERMINATED AT 40 FEET (NEAR REFUSAL) -igure A-15 Log of Test Boring LB 6, page 2 of 2 LCSE SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B S ... DISTURBED OR BAG SAMPLE 0 .. STANDARD PENETRATION TEST .. CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. 0-4367-402 DEPTH IN FEET SOIL CLASS CUSCS) BORING LB 7 ELEVATION 515 EQUIPMENT DATE COMPLETED 10/2/89 30" BUCKET DRILL 2 ill Ul 3 iu ^ aS >- gui go •>-°- a. ^ o Ul b a. p I- ^ o u 0 2 4 - 6 - - 8 - 10 12 h 14 16 - 18 - 20 22 - h 24 - MATERIAL DESCRIPTION CL 26 28 CL UNDOCUMENTED FILL Soft, damp to dry, medium grey-green, mottled with brown, Sandy Clav: some cobble to boulder gravel and scattered concrete chunks PUSH i: "111.3 19.0 Irregular contact with/natural alluvial soils; roots, decayed vegetation, etc. ALLUVIUM Soft, wet, dark brown, Sandy CLAY Sharp, but irregular, depositional contact into weathered formation. SANTLAGO PEAK VOLCANICS Dense, moist, light brown, mottled with tan red, weathered fractured andesitic VOLCANIC ROCK BORING TERMINATED AT 30 FEET Figure A-16 Log of Test Boring LB 7, page 1 of 1 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL B. .. STANDARD PENETRATION TEST • . .. DRIVE SAMPLE CUNDISTURBED) ^ ... DISTURBED OR BAG SAMPLE 0. .. CHUNK SAMPLE % . .. WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o _j o X SOIL CLASS CUSCS) TRENCH T 1 ELEVATION 373 DATE COMPLETED 9/14/89 EQUIPMENT JD 555 TRACK BACKHOE Q: ~ «u: Ul a u s- si 0 2 4 6 H 8 MATERIAL DESCRIPTION SM TOPSOIL Loose, dry, dark brown, Silty coarse SAND, scattered rock BONSALL TONALITE Very dense, damp, light reddish-brown ranciomly fractured weathered coarse coarse crystalline intrusive GRANITIC ROCK Fault, N70W, 60NE; 1/2 inch-1 inch thick dark gray clay gouge TRENCH TERMINATED AT 8 FEET -igure A-16, Log of Test Trench T 1 LCSE SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B ^ ... DISTURBED OR BAG SAMPLE 0 .. STANDARD PENETRATION TEST • .. CHUNK SAMPLE T. DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >• a o J o I SOIL CLASS CUSCS) TRENCH T 2 ELEVATION 474 DATE COMPLETED 9/14/89 EQUIPMENT JD 555 TRACK BACKHOE OT OT a. S >- fc- Ul a a. • Ul b a. z o u - 0 MATERIAL DESCRIPTION 2 - SC TOPSOIL Loose, damp, dark red-brown, Clayey-Rocky fine SAND BONSALL TONALITE Very dense, damp-moist, medium brown, highly sheet-fractured weathered medium crystalline intrusive GRANITIC ROCK Joints N50E, 80W, 2-6 inch spacing at 4 feet TRENCH TERMINATED AT 5 FEET -igure A-17, Log of Test Trench T 2 LCSE SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B S ... DISTURBED OR BAG SAMPLE 0 STANDARD PENETRATION TEST CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o _i o X SOIL CLASS CUSCS) TRENCH T 3 ELEVATION 451 DATE COMPLETED 9/14/89 EQUIPMENT JD 555 TRACK BACKHOE UI SO _ U. OT« OTO UJ ID >- fc- go Q: Ul i a Pi_ OT Ul o o - 0 Si MATERIAL DESCRIPTION TOPSOIL Loose, dry, dark brown, Silty-Gravelly fine SAND BONSALL TONALITE Very dense, damp, light grayish-brown medium crystalline intrusive GRANITIC ROCK (few fractures, blocky) - 2 - SM TRENCH TERMINATED AT 3 (REFUSAL) FEET igure A-18, Log of Test Trench T 3 LCSE SAMPLE SYMBOLS SAMPLING UNSUCCESSFUL B S ... DISTURBED OR BAG SAMPLE 0 .. STANDARD PENETRATION TEST .. CHUNK SAMPLE .. DRIVE SAMPLE CUNDISTURBED) .. 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o -I o X I- H _l SOIL CLASS CUSCS) TRENCH T 4 ELEVATION 446 DATE COMPLETED 9/14/89 EQUIPMENT JD 555 TRACK BACKHOE OT OT " i OT Ul in Ss >- gu! go DC Ul b OC OT: - 0 - 2 MATERIAL DESCRIPTION SM ALLUVIUM Loose, dry, dark brown, Silty-Rocky coarse SAND BONSALL TONALITE Very dense, damp, light grayish-brown medium crystalline intrusive GRANITIC ROCK: random fracturing TRENCH TERMINATED AT 5 FEET (REFUSAL) Figure A-19, Log of Test Trench T 4 LCSE SAMPLE SYMBOLS ° - ''''''''' UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B. 0. .. STANDARD PENETRATION .. CHUNK SAMPLE TEST • . T . .. DRIVE .. WATER SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 OEPTH IN FEET SAMPLE NO. >-C9 O _l • X SOIL CLASS CUSCS) TRENCH T 5 ELEVATION 515 DATE COMPLETED 9/14/89 EQUIPMENT JD 555 TRACK BACKHOE OT OT OC S >• gu! go >°- OC ^ Ul ^ 2fi 0 2 4 - 6 - 8 MATERIAL DESCRIPTION SC TOPSOIL Loose, dry, dark red-brown, Clayey-Rocky fine SAND SANTIAGO PEAK VOLCANICS Very dense, moist, light brown-orange, highly fractured andesitic VOLCANIC ROCK: hydrothermal (araillic) alteration throughout; sheet-fracturing 1/4-1 inch apart; N50W, 80SW; minor cross-fractures N45E, 80SE Fault; N40W, 40NE; 1/4-1/2 inch gouge, normal slickensides; moist-wet TRENCH TERMINATED AT 8 FEET *T-5 is located 150-i- downstream from the southside of the La Costa Dam. Figure A-20, Log of Test Trench T 5 LCSE SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B S ... DISTURBED OR BAG SAMPLE 0 .. STANDARD PENETRATION TEST .. CHUNK SAMPLE • ... DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o _i o I h- H _l SOIL CLASS CUSCS) TRENCH T 6 ELEVATION 577 DATE COMPLETED 9/14/89 EQUIPMENT JD 555 TRACK BACKHOE « it \ HS3 Z«° >5 oc Ul ^ D: o - 0 - 2 - 4 MATERIAL DESCRIPTION CL TOPSOIL Soft, dry, dark brown, Sandy-Rocky CLAY SANTLAGO PEAK VOLCANICS Very dense, damp, dark gray mottled with brown, moderately fractured andesitic VOLCANIC ROCK: fresh, unaltered, along fractures; joints 1 inch-3 inch apart, N30E, vertical, cross fractures are N50W, 60NE with 2-4 inch spacing TRENCH TERMINATED AT 5 FEET Figure A-21, Log of Test Trench T 6 LCSE SAMPLE SYMBOLS ° - '''''''' UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B... STANDARD PENETRATION TEST 0 ... CHUNK SAMPLE 1... DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o _i o X SOIL CLASS CUSCS) TRENCH T 7 ELEVATION 550 DATE COMPLETED 9/14/89 EQUIPMENT JD 555 TRACK BACKHOE z „, - fS3 z«3 Q. fc- Ul o DC ^ O Ul ^ nc : z • o o 0 2 -I MATERIAL DESCRIPTION - 4 6 - - 8 SC SLOPEWASH Loose, damp, dark brown, Clayey-Silty fine SAND BONSALL TONALITE Very dense, moist, light brown, randomly fractured, slightly weathered medium crystalline intrusive GRANITIC ROCK TRENCH TERMINATED AT 9 FEET -igure A-22, Log of Test Trench T 7 LCSE SAMPLE SYMBOLS ° - '''''''' UNSUCCESSFUL B ... STANDARD PENETRATION TEST • .. . DRIVE SAMPLE CUNDISTURBED) S ... DISTURBED OR BAG SAMPLE 0 ... 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 UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >-a o -I o X I- H J SOIL CLASS CUSCS) TRENCH T 8 ELEVATION 510 DATE COMPLETED 9/14/89 EQUIPMENT JD 555 TRACK BACKHOE Ul IN OT« OT g >- lu! go • Ul b p Sm ^ o o 0 2 h 4 H MATERIAL DESCRIPTION SC ALLUVIUM Loose, dry, dark reddish-brown, Clayey- Rocky fine SAND SANTIAGO PEAK VOLCANICS Very dense, brownish gray to dark gray, moderately randomly fractured andesitic VOLCANIC ROCK: blocky fractures TRENCH TERMINATED AT 5 FEET (REFUSAL) figure A-23, Log of Test Trench T 8 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL B . S ... DISTURBED OR BAG SAMPLE 0 . .. STANDARD PENETRATION .. CHUNK SAMPLE TEST • . Y . .. DRIVE .. WATER SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o _i o X I- H -I SOIL CLASS CUSCS) TRENCH T 9 ELEVATION 496 DATE COMPLETED 9/15/89 EQUIPMENT JD 555 TRACK BACKHOE UJ . z- OT§ OT 5 Ul m D: S OT„- Ul O oc ^ a UJ b MATERIAL DESCRIPTION 2 - - 4 - SC ALLUVIUM Loose, dry, dark reddish-brown, Clayey- Rocky fine SAND SANTIAGO PEAK VOLCANICS Very dense, light brown to dark gray, moderately randomly fractured andesitic VOLCANIC ROCK, blocky. TRENCH TERMINATED AT 5 FEET (REFUSAL) Figure A-24, Log of Test Trench T 9 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B. 0. .. STANDARD PENETRATION TEST 1... DRIVE SAMPLE CUNDISTURBED) .. CHUNK SAMPLE Y ... 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 UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. Q: > UJ a 1-o <r J 3 o • X Z 1-P H o J Q: a SOIL CLASS CUSCS) TRENCH T 10 ELEVATION 496 DATE COMPLETED 9/15/89 EQUIPMENT JD 555 TRACK BACKHOE >- fc- oc UJ ^ n: Pl- OT - 2 - MATERIAL DESCRIPTION ALLUVIUM SC Loose, damp, dark reddish-brown, Clayey- Rocky fine SAND SANTLAGO PEAK VOLCANICS Very dense, damp, light brown-gray moderately randomly fractured andesitic tuff-breccia VOLCANIC ROCK: some weathering and argillic alteration. TRENCH TERMINATED AT 5 (NEAR REFUSAL) FEET Figure A-25, Log of Test Trench T 10 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL H ... DISTURBED OR BAG SAMPLE B... STANDARD PENETRATION TEST 0 ... CHUNK SAMPLE 1... DRIVE SAMPLE CUNDISTURBED) Y ... 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >-a o _i o X ^- H -I SOIL CLASS CUSCS) TRENCH T 11 ELEVATION 415 DATE COMPLETED 9/15/89 EQUIPMENT JD 555 TRACK BACKHOE OT 3 O -I aS UJ >• fc- DC UJ S 0 2 H MATERIAL DESCRIPTION Tll-1 TOPSOIL Loose, damp, dark reddish brown, very Rocky-Clayey fine SAND SANTIAGO PEAK VOLCANICS Very dense, damp, dark brown, to tan- mottled, andesitic tuffaceous breccia VOLCANIC ROCK: moderately randomly fractured, blocky, 6-10 inch fracture spacing. TRENCH TERMINATED AT 3.5 FEET (REFUSAL) • Figure A-26, Log of Test Trench Tll LCSE SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B. S ... DISTURBED OR BAG SAMPLE 0 . .. STANDARD PENETRATION .. CHUNK SAMPLE TEST • . Y . .. DRIVE .. WATER SAMPLE CUNDISTURBED) TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >• C9 O -J O X H H -J SOIL CLASS CUSCS) TRENCH T12 ELEVATION 320 DATE COMPLETED 9/15/89 EQUIPMENT JD 555 TRACK BACKHOE VI -3 OT g UJ m >- OT „* UJ OC ^ a UI ^ DC MATERIAL DESCRIPTION 2 - - 4 - CL-GC SURFICLAL LANDSLIDE DEBRIS Soft, moist, medium to dark reddish-brown, very Rocky-Bouldery, Sandy CLAY Very irregular contact SANTIAGO PEAK VOLCANICS Very dense, damp, brownish dark gray, andesitic breccia VOLCANIC ROCK: slight- moderate fractured, blocky, 10-12 inch fragments. TRENCH TERMINATED 5 FEET Figure A-27, Log of Test Trench T 12 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL S ... DISTURBED OR BAG SAMPLE B. 0. .. STANDARD PENETRATION TEST • ... DRIVE SAMPLE CUNDISTURBED) .. CHUNK SAMPLE Y ... 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 UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. a: > UJ a H o <t -J 3 o a X z 1-p H o _l GR SOIL CLASS CUSCS) TRENCH T 13 ELEVATION 327 DATE COMPLETED 9/15/89 EQUIPMENT JD 555 TRACK BACKHOE WOT 0. ^-• >- OT Z u. UJ o UJ b 3 I- OT 2 - 4 - 6 - 8 - 10 SC-GC ^0, MATERIAL DESCRIPTION ALLUVIUM Loose, damp, dark reddish-brown, very Bouldery-Clayey SAND: 6-12 inch angular to subrounded boulders common Soft, wet, medium-light brown, Sandy-Gravelly CLAY Medium dense, moist, light reddish-brown, Clayey-Bouldery medium SAND SANTIAGO PEAK VOLCANICS Very dense, light reddish-brown, weathered-altered, sheet fractured (1-3 inch spacing) andesitic VOLCANIC ROCK: sheet orientation; N30E, 75SE. TRENCH TERMINATED AT 11 FEET (NEAR REFUSAL) Figure A-28, Log of Test Trench T 13 LCSE SAMPLE SYMBOLS "" . SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST • .. . DRIVE SAMPLE CUNDISTURBED) . DISTURBED OR BAG SAMPLE 0... CHUNK SAMPLE . WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. a o -I o X SOIL CLASS CUSCS) TRENCH T 14 ELEVATION 325 DATE COMPLETED 9/15/89 EQUIPMENT JD 555 TRACK BACKHOE H ^ h- >- fc- oc ^ ujb oc Ul MATERIAL DESCRIPTION 4 - 6 - 8 10 T14-1 CL SURFICLAL LANDSLIDE DEBRIS Soft, moist, medium-dark reddish-brown Sandy CLAY Irregular, westward-inclined contact SANTIAGO PEAK VOLCANICS Dense, moist, light reddish-brown, mottled with green, aqua, andesitic breccia VOLCANIC ROCK: strong sheet fracturing at N45W, 60SW, with pseudomorphic pyrite and secondary copper minerals (crysocolla); strong hydrothermal alteration (argillic). TRENCH TERMINATED AT 10 FEET Figure A-29, Log of Test Trench T 14 LCSE SAMPLE SYMBOLS ° - '''''''' UNSUCCESSFUL S ... DISTURBED OR BAG SAMPLE B. 0. .. STANDARD PENETRATION TEST DRIVE SAMPLE CUNDISTURBED) .. 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 UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >-a o -1 o X I- SOIL CLASS CUSCS) TRENCH T 15 ELEVATION 312 DATE COMPLETED 9/15/89 EQUIPMENT JD 555 TRACK BACKHOE H y H OT§ OT g ill ^ Q: S >- Ul o Q: ^ • Ul ^ p si - 2 6 - 8 - 10 12 - 14 - mi ft MATERIAL DESCRIPTION CL CL-GC CL SURFICIAL LANDSLIDE DEBRIS Soft, moist, dark reddish-brown, Sandy- Gravelly CLAY Soft, wet, light tan-olive, Bouldery CLAY; intense random slickensided surfaces within clay matrix; up to 4 feet in diameter subrounded volcanic boulders; within a disturbed matrix Irregular, nearly horizontal surface (base of slide) DELMAR FORMATION Hard, moist, mottled red-olive, Sandy- Pebble CLAYSTONE Small clasts of volcanic rock at 15 feet TRENCH TERMINATED AT 15 FEET Figure A-30, Log of Test Trench T 15 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B... STANDARD PENETRATION TEST 0 ... CHUNK SAMPLE 1... DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o _i o X l- H -I SOIL CLASS CUSCS) TRENCH T 16 ELEVATION 303 DATE COMPLETED 9/15/89 EQUIPMENT JD 555 TRACK BACKHOE UJ " OT§ OT g UJ m a S >• gu! Ul o s- Ul MATERIAL DESCRIPTION 6 8 GC SURFICIAL LANDSLIDE DEBRIS Ldose, moist, light brown. Clayey BOULDER- GRAVEL CL-CH Soft, wet, light tan-green, Sandy CLAY with low-angle discontinuous slickensided surfaces Irregular, nearly horizontal surface (base of slide) SANTIAGO PEAK VOLCANICS Very dense, reddish brown, weathered tuff-breccia VOLCANIC ROCK random fractures with light olive clay fillings TRENCH TERMINATED AT 8 FEET (NEAR REFUSAL) Figure A-31, Log of Test Trench T 16 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL S ... DISTURBED OR BAG SAMPLE B 0 .. STANDARD PENETRATION TEST DRIVE SAMPLE CUNDISTURBED) .. CHUNK SAMPLE Y ... 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 UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >-a o .1 o X I- SOIL CLASS CUSCS) TRENCH T 17 ELEVATION 315 DATE COMPLETED 9/18/89 EQUIPMENT JD 555 TRACK BACKHOE So I- <E D: t- Ul z Ul Q. OT 3 OT g UJ m OC S OT gu! go >^ oc ^ Ul b oc OT Ul O 0 2 -\ 4 6 8 10 CL CL "cr MATERIAL DESCRIPTION SURFICLAL LANDSLIDE DEBRIS Stiff, damp, dark brown, very Rocky CLAY Irregular surface, generally inclined southwestward Stiff, moist, light olive mottled red, Sandy CLAY Remolded clay seam; N60W, 20SW (base of slide) 1/4-1/2 inch thick DELMAR FORMATION Hard, moist, medium-light olive, Sandy CLAYSTONE fractured, with random slickensided surfaces, blocky TRENCH TERMINATED AT 10 FEET Figure A-32, Log of Test Trench T 17 LCSE SAMPLE SYMBOLS ° - '''''''' UNSUCCESSFUL S ... DISTURBED OR BAG SAMPLE B.. 0.. . STANDARD PENETRATION TEST 1... DRIVE SAMPLE CUNDISTURBED) . 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. a o _i o X t-H SOIL CLASS CUSCS) TRENCH T 18 ELEVATION 325 DATE COMPLETED 9/18/89 EQUIPMENT JD 555 TRACK BACKHOE OT§ Kg Ss >- go >-°^ oc ^ o Ul b oc OT Ul o 2 - 4 - 6 8 CL CL MATERIAL DESCRIPTION SURF1CL\L LANDSLIDE DEBRIS Soft, damp, dark brown, Sandy-Rocky CLAY Irregular SW-inclined remolded clay seam at base with calcium carbonate coatings (base of slide) DELMAR FORMATION Stiff, moist, brown, mottled olive, sandy CLAYSTONE SANTIAGO PEAK VOLCANICS Very dense, moist, light reddish-brown mottled with green, altered andesitic VOLCANIC ROCK hydrothermally altered with pseudomorphs of hematite after pyrite; possible traces of secondary copper minerals (malachite or crysocolla); sheeted fractures: N45W, 40SW, 1/4-1 inch apart. TRENCH TERMINATED AT 9 FEET Figure A-33, Log of Test Trench T 18 LCSE SAMPLE SYMBOLS ° - '''''''' UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B. 0. .. STANDARD PENETRATION TEST 1... DRIVE SAMPLE CUNDISTURBED) .. 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. O o -I o X H SOIL CLASS CUSCS) TRENCH T19 ELEVATION 300 DATE COMPLETED 9/18/89 EQUIPMENT JD 555 TRACK BACKHOE z ,„ - 1- 5 £ s OT: H Ss o gu! go oc UI b oc OT UI - 0 4 6 - 8 - 10 12 - 14 - MATERIAL DESCRIPTION LANDSLIDE DEBRIS Stiff, damp, dark brown, Sandy-Gravelly CLAY CL GC Medium-dense, damp, dark reddish-brown, Clayey-Sandy cobble GRAVEL: most gravel is subrounded andesitic volcanic rock up to 8 inch diameter TRENCH TERMINATED AT 15 FEET •igure A-34, Log of Test Trench T 19 LCSE SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B ... STANDARD PENETRATION TEST M ... DISTURBED OR BAG SAMPLE 0 ... CHUNK SAMPLE • ... DRIVE SAMPLE CUNDISTURBED) 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 UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >-a o -J o X I- H -J SOIL CLASS CUSCS) TRENCH T20 ELEVATION 307 DATE COMPLETED 9/18/89 EQUIPMENT JD 555 TRACK BACKHOE OT OT OT ' Ul ^ a. S > UJ ujb oc z Ul 1-z OT MATERIAL DESCRIPTION 2 - 4 6 H 8 10 ^1 CL LANDSLIDE DEBRIS Stiff, damp, dark brown, Sandy-Gravelly CLAY Irregular westward-inclined contact SANTIAGO PEAK VOLCANICS Very dense, moist, dark reddish-brown to orange, altered highly fractured andesitic VOLCANIC ROCK: random jointing from 1/4-2 inches apart. TRENCH TERMINATED AT 10 FEET Figure A-35, Log of Test Trench T 20 LCSE SAMPLE SYMBOLS ° - '''''''' UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B. 0. . STANDARD PENETRATION TEST DRIVE SAMPLE CUNDISTURBED) . CHUNK SAMPLE Y ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >-a o -I o X H -I SOIL CLASS CUSCS) TRENCH T21 ELEVATION 291 DATE COMPLETED 9/18/89 EQUIPMENT JD 555 TRACK BACKHOE z o H I-<L IT Ul " z*^ OT§ o -J Q: S >-ti-gu! UJ A oc Ul b p Ss ^ o o 0 2 4 - 6 8 MATERIAL DESCRIPTION T21-1 CL SLOPEWASH Stiff, damp, dark brown, Sandy-Gravelly CLAY Soft, wet, light green-tan, Sandy CLAY: random oriented slickensided surfaces, gypsum (Irregular deposition contact inclined westward) SANTIAGO PEAK VOLCANICS Dense, moist-wet, light tan-reddish- brown, highly fractured, altered, andesitic VOLCANIC ROCK: randomly oriented fractures. TRENCH TERMINATED AT 9 FEET Figure A-36, Log of Test Trench T 21 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL M ... DISTURBED OR BAG SAMPLE B.. 0.. . STANDARD PENETRATION TEST DRIVE SAMPLE CUNDISTURBED) . 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o -I o X I- H _l SOIL CLASS CUSCS) TRENCH T22 ELEVATION 278 DATE COMPLETED 9/18/89 EQUIPMENT JD 555 TRACK BACKHOE 2 „, - z"-<r 5 \ OT ' Ss ti- gul go oc Ul b - 0 MATERIAL DESCRIPTION 4 - 6 - 8 - 10 12 14 SC GC GC CL LANDSLIDE DEBRIS Loose, damp, dark brown-gray, Silty-Clayey fine SAND, some gravel Loose, moist, light reddish-brown, CLAY COBBLE GRAVEL Loose, wet, light olive-tan. Clayey COBBLE GRAVEL (caving) Irregular contact on remolded clay seams SANTLAGO PEAK VOLCANICS Hard, moist,light greenish-tan-gray, Sandy CLAY. Highly fractured with random slickensided clay seams of weathered volcanic rock. TRENCH TERMINATED AT 14 FEET Figure A-37, Log of Test Trench T 22 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL S ... DISTURBED OR BAG SAMPLE B... STANDARD PENETRATION TEST 0 ... CHUNK SAMPLE 1... DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o -I o X I- H -I SOIL CLASS CUSCS) TRENCH T23 ELEVATION 300 DATE COMPLETED 9/19/89 EQUIPMENT JD 555 TRACK BACKHOE Ul OT OT ' DC S fc- z go D: Ul b Q: Pi_ OT Ul gz o - 0 MATERIAL DESCRIPTION 4 - 6 - 8 10 CL LANDSLIDE DEBRIS Soft, wet, light-medium reddish-brown Sandy-Rocky CLAY 1/4 - 1/2 inch remolded clay seam with irregular northward inclination SANTLAGO PEAK VOLCANICS Dense, moist, light tan-white-red mottled, highly randomly fractured, weathered and altered andesitic VOLCANIC ROCK. TRENCH TERMINATED AT 10 FEET Figure A-38, Log of Test Trench T 23 LCSE SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST 1... DRIVE SAMPLE CUNDISTURBED) ^ ... DISTURBED OR BAG SAMPLE 0 ... 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >-O o _l o X SOIL CLASS CUSCS) TRENCH T24 ELEVATION 281 DATE COMPLETED 9/19/89 EQUIPMENT JD 555 TRACK BACKHOE 3 OT g Ss > gu! Ul,; DC ^ Ul ?1 a. - 2 - - 4 6 - 8 10 12 14 16 - 18 MATERIAL DESCRIPTION CL wm ^1 LC-SC ft LANDSLIDE DEBRIS Soft-stiff, moist-wet, dark reddish-brown Sandy-Rocky CLAY Very irregular westward-inclined contact "LooseT wet" Tight"tan-green mbttred, Sandy-Rocky CLAY to very Clayey SAND Highly fractured slickensided zone 12 inches plus thick; irregular, but inclined northward 10-20 degrees, wet to saturated, slight seepage SANTIAGO PEAK VOLCANICS Dense, moist-wet, light tan, mottled red, green, highly weathered or altered andesitic VOLCANIC ROCK: intense random fracturing TRENCH TERMINATED AT 18 FEET Figure A-39, Log of Test Trench T 24 LCSE SAMPLE SYMBOLS ° - ''"^'^'^'^ UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B ... STANDARD PENETRATION TEST 0 ... CHUNK SAMPLE 1... DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 SOIL CLASS CUSCS) TRENCH T25 ELEVATION 305 DATE COMPLETED 9/20/89 EQUIPMENT JD 555 TRACK BACKHOE Ul HO oc UJ m DC S ti-if),: s- si - o o MATERIAL DESCRIPTION LANDSLIDE DEBRIS Stiff, moist, dark reddish brown, Sandy- Gravelly CLAY Remolded clay seam, N30E, 20NW, 1/4-1/2 inch thick; base of slide TERRACE DEPOSIT Dense, moist, light reddish brown mottled orange-tan, Clayey COBBLE BOULDER GRAVEL: clasts are angular to subrounded volcanics Becomes very dense, cemented TRENCH TERMINATED AT 10.5 FEET -igure A-40, Log of Test Trench T 25 LCSE SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST • ^ ... DISTURBED OR BAG SAMPLE 0 ... CHUNK SAMPLE Y .. DRIVE SAMPLE CUNDISTURBED) .. 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >-a o J o X I- SOIL CLASS CUSCS) TRENCH T26 ELEVATION 335 DATE COMPLETED 9/20/89 EQUIPMENT JD 555 TRACK BACKHOE 23 Sg UJ m a S >- H gul Ul • o oc ^ Ul b Ul 0 2 MATERIAL DESCRIPTION 6 H 8 10 SURFICIAL LANDSLIDE DEBRIS Soft, wet, dark brown to reddish-brown Boulder Gravelly CLAY; up to 3 foot diameter subrounded volcanic boulders- disturbed matrix indicates debris-flow. Very irregular contact against weathered bedrock SANTIAGO PEAK VOLCANICS Dense, moist, olive, mottled reddish-brown, highly sheet-fractured andesitic VOLCANIC ROCK. 1-2 inch spaced sheeted jointing at N55W, 55SW; argillic hydrothermal alteration and weathering. TRENCH TERMINATED AT 10 FEET -igure A-41, Log of Test Trench T 26 LCSE SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B ^ ... DISTURBED OR BAG SAMPLE 0 .. STANDARD PENETRATION TEST .. CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. 0-4367-402 DEPTH IN FEET SAMPLE NO. >• a o -I o X I- SOIL CLASS CUSCS) TRENCH T27 ELEVATION 337 DATE COMPLETED 9/20/89 EQUIPMENT JD 555 TRACK BACKHOE UJ HO, OT« O _1 m gul go >-°^ DC ^ Ul ?5 Ss g^ o 2 - 6 - MATERIAL DESCRIPTION CL SURFICIAL LANDSLIDE DEBRIS Soft, damp, dark brown, Sandy-Gravelly CLAY CL-GC Stiff, wet, light brown, mottled orange, Bouldery CLAY to Clayey BOULDER GRAVEL: boulders up to 3 feet diameter. TRENCH TERMINATED AT 7 FEET (REFUSAL-OVERSIZE BOULDERS) Figure A-42, Log of Test Trench T 27 LCSE SAMPLE SYMBOLS ° - '''''''' UNSUCCESSFUL S ... DISTURBED OR BAG SAMPLE B. 0. . STANDARD PENETRATION TEST 1... DRIVE SAMPLE CUNDISTURBED) .. 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. a • o X SOIL CLASS CUSCS) TRENCH T28 ELEVATION 410 DATE COMPLETED 9/20/89 EQUIPMENT JD 555 TRACK BACKHOE Ul D: S >- t,- «u: go D: ^ Ul b - 0 - 2 H 4 6 H MATERIAL DESCRIPTION CL SLOPEWASH Stiff, moist, dark brown, very Gravelly- Rocky Sandy CLAY Very irregular depositional contact inclined southward SANTIAGO PEAK VOLCANICS Dense, moist, medium reddish-brown very fractured, weathered andesitic VOLCANIC ROCK: random fractures 1-4 inch spacing TRENCH TERMINATED AT 7 FEET (NEAR REFUSAL) -igure A-43, Log of Test Trench T 28 LCSE SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B ... STANDARD PENETRATION TEST DISTURBED OR BAG SAMPLE 0 CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) Y ... 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o _i o X I- SOIL CLASS CUSCS) TRENCH T29 ELEVATION 450 DATE COMPLETED 9/20/89 EQUIPMENT JD 555 TRACK BACKHOE H y H t- ff ff 2 \ ^ OT§ ui" z Ul •. Ul a s OT, DC Ul ^ a P L. :z o o 0 2 4 6 H 8 10 MATERIAL DESCRIPTION CL SLOPEWASH Stiff, moist, dark brown. Gravelly CLAY Irregular depositional contact CL SANTLAGO PEAK VOLCANICS Dense, moist, light brown-orange, very weathered, randomly fractured, andesitic VOLCANIC ROCK: rock decomposed and/or hydrothermally altered throughout to a sandy clay TRENCH TERMINATED AT 10 FEET Figure A-44, Log of Test Trench T 29 LCSE SAMPLE SYMBOLS ° - ''''''''' UNSUCCESSFUL M ... DISTURBED OR BAG SAMPLE B. 0. .. STANDARD PENETRATION TEST 1... DRIVE SAMPLE CUNDISTURBED) .. 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 UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o _i o X SOIL CLASS CUSCS) TRENCH T30 ELEVATION 441 DATE COMPLETED 9/20/89 EQUIPMENT JD 555 TRACK BACKHOE SS >- ti- So • Ul b DC Sy • o o MATERIAL DESCRIPTION - 2 - 4 - 6 - SC-CL SLOPEWASH Stiff, dry-damp, dark brown, very Clayey fine SAND to Sandy CLAY Becomes moist at 4 feet Irregular depositional contact SANTTAGO PEAK VOLCANICS Very dense, moist, light brown-orange, very weathered randomly fractured andesitic VOLCANIC ROCK: 1-3 inch spaced fractures TRENCH TERMINATED AT 7 FEET Figure A-45, Log of Test Trench T 30 LCSE SAMPLE SYMBOLS ° - '''''''' UNSUCCESSFUL S ... DISTURBED OR BAG SAMPLE B. 0. . STANDARD PENETRATION TEST DRIVE SAMPLE CUNDISTURBED) . CHUNK SAMPLE Y ... 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 UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o _j o X SOIL CLASS CUSCS) TRENCH T31 ELEVATION 475 DATE COMPLETED 9/20/89 EQUIPMENT JD 555 TRACK BACKHOE H y 1- OT§ OT g UJ -i£ go DC Ul b a. UJ o o 0 2 - 4 - MATERIAL DESCRIPTION SC-CL SLOPEWASH Stiff, damp, dark brown, very Clayey fine SAND to Sandy CLAY Becomes moist at 4 feet Irregular depositional contact CL SANTIAGO PEAK VOLCANICS Dense, moist, light brown-orange, very weathered, randomly fractured, andesitic VOLCANIC ROCK: decomposed and/or altered throughout to sandy clay TRENCH TERMINATED AT 9 FEET Figure A-46, Log of Test Trench T 31 LCSE SAMPLE SYMBOLS ° - '''''''' UNSUCCESSFUL S ... DISTURBED OR BAG SAMPLE B. 0. .. STANDARD PENETRATION .. CHUNK SAMPLE TEST 1... DRIVE SAMPLE CUNDISTURBED) Y ... 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 UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o -I o X I- SOIL CLASS CUSCS) TRENCH T32 ELEVATION 422 DATE COMPLETED 9/20/89 EQUIPMENT JD 555 TRACK BACKHOE OT >- ti- go >-°^ 0 2 h 4 MATERIAL DESCRIPTION CL ALLUVIUM Soft, damp, dark brown, Sandy CLAY SANTIAGO PEAK VOLCANICS Very dense, damp, dark gray-mottled with brown, moderately randomly fractured andesitic VOLCANIC ROCK: fractures spaced 2-5 inches TRENCH TERMINATED AT 5.5 FEET Figure A-47, Log of Test Trench T 32 LCSE SAMPLE SYMBOLS ••- SAMPLING UNSUCCESSFUL S ... DISTURBED OR BAG SAMPLE B.. 0.. . STANDARD PENETRATION TEST 1... DRIVE SAMPLE CUNDISTURBED) . CHUNK SAMPLE Y ... 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 UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >-a o -I o X 1- SOIL CLASS CUSCS) TRENCH T33 ELEVATION 295 DATE COMPLETED 9/2/89 EQUIPMENT JD 555 TRACK BACKHOE UJ OT^ OT g UJ d ti- go >-°^ • Ul ^ DC OT Ul 0 2 4 MATERIAL DESCRIPTION 8 10 H 12 14 GC LANDSLIDE DEBRIS Loose to medium-dense, damp medium to dense, medium to dark reddish brown, Clayey-Sandy COBBLE to BOULDER-GRAVEL: angular to subrounded andesitic volcanic clasts Becomes moist at 11 feet TRENCH TERMINATED AT 14 FEET (NEAR REFUSAL ON BOULDERS) Figure A-48, Log of Test Trench T 33 LCSE SAMPLE SYMBOLS ^ "" S .. . SAMPLING UNSUCCESSFUL B.. . STANDARD PENETRATION TEST • .. . DRIVE SAMPLE CUNDISTURBED) SAMPLE SYMBOLS ^ "" S .. . DISTURBED OR BAG SAMPLE 0.. . CHUNK SAMPLE ¥ •• . WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o _i o X I- SOIL CLASS CUSCS) TRENCH T34 ELEVATION 285 DATE COMPLETED 9/2/89 EQUIPMENT JD 555 TRACK BACKHOE ff S \ ^23 S>"m > ti-^ul Ul,: a Ul b p Ss Q!; 0 2 4 - 6 8 10 12 H 14 MATERIAL DESCRIPTION GC LANDSLIDE DEBRIS Loose, damp-moist,medium to dark reddish- brown Clayey, Sandy, COBBLE to BOULDER- GRAVEL: disturbed, poorly sorted matrix indicates a debris-flow. Very irregular surface with 1/4-1/2 inch wet remolded clay layer (discontinuous) SANTIAGO PEAK VOLCANICS Dense, moist, mottled red-brown-green, highly fractured and altered andesitic VOLCANIC ROCK TRENCH TERMINATED AT 14 FEET =igure A-49, Log of Test Trench T 34 LCSE SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B S ... DISTURBED OR BAG SAMPLE 0 STANDARD PENETRATION TEST CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > (9 O J O X t- H -I SOIL CLASS CUSCS) TRENCH T35 ELEVATION 323 DATE COMPLETED 9/22/89 EQUIPMENT JD 555 TRACK BACKHOE S UJ - I-, y 1— Ul OT ' Ul ^ m Q. >- fc- z . go >-°^ D: ^ Ul b D SS 0 2 4 - 6 - 8 - 10 12 14 MATERIAL DESCRIPTION SM GC CL TOPSOIL Loose, dry, dark brown, Silty fine SAND, some clay SURFICL\L LANDSLIDE DEBRIS Loose, damp, dark reddish-brown, very Clayey Sandy COBBLE-GRAVEL: clasts angular to subrounded Soft, wet, banded red-green-tan, contorted Sandy CLAY; possible flow-banding as, the base of a debris-flow) Very irregular southward-inclined contact SANTIAGO PEAK VOLCANICS Dense, moist, mottled red-brown, highly fractured, altered and weathered andesitic VOLCANIC ROCK: random 1/2-2 inch spaced joints TRENCH TERMINATED AT 14 FEET Figure A-50, Log of Test Trench T 35 LCSE SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B... STANDARD PENETRATION TEST 0 ... CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o _i o X t- H _l SOIL CLASS CUSCS) TRENCH T36 ELEVATION 333 DATE COMPLETED 9/22/89 EQUIPMENT JD 555 TRACK BACKHOE Ul o •-si UJ " — z Ul a. OT UJ ^ Ss > fc- Ul, DC ^ UJ b ii UJ g^ o MATERIAL DESCRIPTION 2 - 4 - SM TOPSOIL Loose, dry, dark brown, Silty fine SAND, some clay SANTLAGO PEAK VOLCANICS Dense, moist, mottled red-brown, sheet- fractured altered and weathered andesitic VOLCANIC ROCK: highly sheet-fractures at N55W, 60SW at 1/2-2 inch spacing; argillic-pyritic hydrothermal alteration Fault, N30W, 60SW; 1/4-1/2 inch gray clay gouge at 6 feet TRENCH TERMINATED AT 8 FEET Figure A-51, Log of Test Trench T 36 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B. 0. . STANDARD PENETRATION TEST 1... DRIVE SAMPLE CUNDISTURBED) . 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 UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o -I o X SOIL CLASS CUSCS) TRENCH T37 ELEVATION 280 DATE COMPLETED 9/22/89 EQUIPMENT JD 555 TRACK BACKHOE OT§ OT g Ul si Ss OTii* UJ o Q Ul b OC Pi_ OT UI !^ • o o MATERIAL DESCRIPTION 2 - 4 - - 6 - 8 - 10 - 12 CL LANDSLIDE DEBRIS Soft, moist, dark brown, mottled with gray, Sandy CLAY Caving; Standing water table (after 2 hours) CL SANTLAGO PEAK VOLCANICS Stiff-medium-hard, wet, light orange-red mottled, highly weathered andesitic VOLCANIC ROCK ; slickensided random fractures; rock is weathered to a sandy clay TRENCH TERMINATED AT 12 FEET (CAVING, WATER) -igure A-52, Log of Test Trench T 37 LCSE SAMPLE SYMBOLS "" S .. . SAMPLING UNSUCCESSFUL B.. . STANDARD PENETRATION TEST • .. . DRIVE SAMPLE CUNDISTURBED) SAMPLE SYMBOLS "" S .. . DISTURBED OR BAG SAMPLE 0.. . CHUNK SAMPLE ¥ •• . 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o -I o X SOIL CLASS CUSCS) TRENCH T38 ELEVATION 295 DATE COMPLETED 9/22/89 EQUIPMENT JD 555 TRACK BACKHOE Z i.l -UJ Q , Ul ^ m ^u! Ul b Pi_ 0 2 h 4 - 6 - MATERIAL DESCRIPTION CL SLOPEWASH Stiff, damp, dark brown, Sandy CLAY CL SANTIAGO PEAK VOLCANICS Dense, moist, light brown-red mottled, highly weathered andesitic VOLCANIC ROCK, intense random fracturing with clay seams, rock is weathered to a sandy clay TRENCH TERMINATED AT 9 FEET Figure A-53, Log of Test Trench T 38 LCSE SAMPLE SYMBOLS ° - '''''''' UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B. 0. . STANDARD PENETRATION TEST DRIVE SAMPLE CUNDISTURBED) . 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 UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o Jl o X I- SOIL CLASS CUSCS) TRENCH T39 ELEVATION 287 DATE COMPLETED 9/22/89 EQUIPMENT JD 555 TRACK BACKHOE ff OC OT§ Ul m OTI,* Ul O Q Ul b D: p - 0 - 2 4 6 8 10 MATERIAL DESCRIPTION 12 - 14 CL ALLUVIUM Soft, moist, dark brown, Sandy, Rocky CLAY Becomes wet at 5.5 feet Irregular depositional contact CL SANTIAGO PEAK VOLCANICS Soft, wet, light tan mottled with red, highly weathered VOLCANIC ROCK, weathered to a sandy clay, becoming harder with depth Becomes saturated, stiff to hard at 13 feet TRENCH TERMINATED AT 14 FEET Figure A-54, Log of Test Trench T 39 LCSE SAMPLE SYMBOLS ° - ^^"^^'^^ UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B.. 0.. . STANDARD PENETRATION TEST 1 ... DRIVE SAMPLE CUNDISTURBED) . CHUNK SAMPLE Y ... 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o -I o SOIL CLASS CUSCS) TRENCH T40 ELEVATION 348 DATE COMPLETED 9/22/89 EQUIPMENT JD 555 TRACK BACKHOE OT§ OT g Ul a. S >• ti- OT 11* Ul Q Ul b OC UI o o - 0 MATERIAL DESCRIPTION - 6 CL ALLUVIUM Soft, damp, dark brown, very Sandy, Rocky CLAY; root voids common Irregular depositional contact SANTIAGO PEAK VOLCANICS Dense, damp, light reddish-brown, weathered moderately fractured andesitic VOLCANIC ROCK: random jointing 1-6 inches apart TRENCH TERMINATED AT 6 FEET Figure A-55, Log of Test Trench T 40 LCSE SAMPLE SYMBOLS ° - '''''''' UNSUCCESSFUL S ... DISTURBED OR BAG SAMPLE B. 0. .. STANDARD PENETRATION TEST 1... DRIVE SAMPLE CUNDISTURBED) .. 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o -I o X SOIL CLASS CUSCS) TRENCH T41 ELEVATION 286 DATE COMPLETED 9/22/89 EQUIPMENT JD 555 TRACK BACKHOE OT§ OT g UI a. S > ti-gui go DC UI b OC Pi_ OT Ul o o - 0 - 4 6 8 10 12 H 14 16 MATERIAL DESCRIPTION CL TERRACE DEPOSIT Soft to stiff, moist, dark reddish-brown, Sandy-Gravelly CLAY; imbricated gravel (depositional) CL-GC Becomes very gravelly, with boulders at 13 feet TRENCH TERMINATED AT 15.5 FEET Figure A-56, Log of Test Trench T 41 LCSE SAMPLE SYMBOLS ° - '''''''' UNSUCCESSFUL S ... DISTURBED OR BAG SAMPLE B. 0. . STANDARD PENETRATION TEST 1... DRIVE SAMPLE CUNDISTURBED) . 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 UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. a o J o X SOIL CLASS CUSCS) TRENCH T42 ELEVATION 300 DATE COMPLETED 9/25/89 EQUIPMENT JD 555 TRACK BACKHOE Pit ff 2 \ ^S3 Ul a. DC ! >• ti- OT „• O OC o Ul ^ p si o 0 2 h 4 6 8 MATERIAL DESCRIPTION CL SLOPEWASH Soft, moist, dark brown Sandy CLAY Irregular depositional contact, inclined roughly westward SANTIAGO PEAK VOLCANICS Dense, moist, medium-light reddish-brown, highly random fractured and altered, andesitic VOLCANIC ROCK TRENCH TERMINATED AT 9 FEET Figure A-57, Log of Test Trench T 42 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B... STANDARD PENETRATION TEST 0 ... CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >• o Q -I O X I- H J SOIL CLASS CUSCS) TRENCH T43 ELEVATION 287 DATE COMPLETED 9/25/89 EQUIPMENT JD 555 TRACK BACKHOE o , OT§. OT g UJ m DC S ^Ul UI Q O OC ^ • Ul b DC - 0 - 2 - - 4 - 6 - 8 - 10 - 12 - MATERIAL DESCRIPTION 14 GC TERRACE DEPOSIT Dense, moist, light brown, very Clayey PEBBLE-COBBLE GRAVEL, some sand CL Irregular, westward-inclined depositional contact DELMAR FORMATION Very hard, moist, greenish-gray mottled with reddish-brown very Sandy CLAYSTONE: massive Very dense, moist, greenish-gray Clayey coarse SANDSTONE TRENCH TERMINATED AT 14 FEET Figure A-58, Log of Test Trench T 43 LCSE SAMPLE SYMBOLS SAMPLING UNSUCCESSFUL B ^ ... DISTURBED OR BAG SAMPLE 0 STANDARD PENETRATION TEST CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o -I o X I- SOIL CLASS CUSCS) TRENCH T44 ELEVATION 265 DATE COMPLETED 9/25/89 EQUIPMENT JD 555 TRACK BACKHOE OT: > ti- ^u! go o: • |b Ss gz o - 2 - 4 - 6 8 - 10 - 12 - 14 m MATERIAL DESCRIPTION SC-CL ALLUVIUM Loose, moist, dark reddish-brown, very Clayey, Rocky-Bouldery SAND Becomes wet at 10 feet Irregular depositional contact SANTIAGO PEAK VOLCANICS Dense, wet, light brown-tan, fractured, weathered, andesitic VOLCANIC ROCK TRENCH TERMINATED AT 14 FEET Figure A-59, Log of Test Trench T 44 LCSE SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B... STANDARD PENETRATION TEST I... DRIVE SAMPLE CUNDISTURBED) 0 ... 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 UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o -1 o X I- SOIL CLASS CUSCS) TRENCH T45 ELEVATION 328 DATE COMPLETED 9/25/89 EQUIPMENT JD 555 TRACK BACKHOE OT 3 a. Si; >-ti-gu! UJ A DC a uib oc OT Ul gs o MATERIAL DESCRIPTION - 2 - 4 SC SC-CL ALLUVIUM Loose, damp, dark reddish-brown, Bouldery- Gravelly Clayey SAND Irregular to "V" shaped channel-contact SANTIAGO PEAK VOLCANICS Dense, moist, light reddish-brown, very weathered andesitic VOLCANIC ROCK: altered and randomly fractured TRENCH TERMINATED AT 5 FEET "igure A-60, Log of Test Trench T 45 LCSE SAMPLE SYMBOLS ° - ''''''''' UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B... STANDARD PENETRATION 0 ... CHUNK SAMPLE TEST 1 . Y . .. DRIVE .. WATER SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. O o -I o X I- SOIL CLASS CUSCS) TRENCH T46 ELEVATION 508 DATE COMPLETED 9/25/89 EQUIPMENT JD 555 TRACK BACKHOE Ul z^^ ix OT§ Sg Ss Ul, >b oc UI ^ DC OT i - 0 MATERIAL DESCRIPTION 6 - SC ALLUVIUM Loose, damp to moist, dark reddish-brown very Clayey, Gravelly fine SAND SC-CL Becomes wet at 6.5 feet Irregular, but nearly horizontal, depositional contact SANTIAGO PEAK VOLCANICS Dense, moist-wet, light brown, very weathered andesitic VOLCANIC ROCK: altered and randomly fractured TRENCH TERMINATED AT 8 FEET Figure A-61, Log of Test Trench T 46 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL B ... ^ ... DISTURBED OR BAG SAMPLE 0 ... STANDARD PENETRATION CHUNK SAMPLE TEST • ... DRIVE Y ... WATER SAMPLE CUNDISTURBED) TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF THE SPECIFIC BORING SUBSURFACE CONDITIONS OR TRENCH LOCATION AND AT THE AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o -I o X I- SOIL CLASS CUSCS) TRENCH T47 ELEVATION 494 DATE COMPLETED 9/25/89 EQUIPMENT JD 555 TRACK BACKHOE I t-ff Q: I-UJ z Ul a. OT OT OT g Ul Ss >- ti- gul go y^ oc ^ mb ss - 0 2 - h 4 - 6 8 H 10 MATERIAL DESCRIPTION GP UNDOCUMENTED FILL Loose, dry-damp, dark brown, sandy boulder GRAVEL: 1/2-3 foot diameter angular rock fill with voids, plant debris, . . . TRENCH TERMINATED AT 10 FEET (REFUSAL-OVERSIZE BOULDERS) Figure A-62, Log of Test Trench T 47 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B.. 0.. . STANDARD PENETRATION TEST DRIVE SAMPLE CUNDISTURBED) . 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >-a o -I o X SOIL CLASS CUSCS) TRENCH T48 ELEVATION 480 DATE COMPLETED 9/25/89 EQUIPMENT JD 555 TRACK BACKHOE Q I OT 3 O Ss >- ti- gul go >^ oc ^ Ul b DC 3 i_ OT Ul O MATERIAL DESCRIPTION 2 - 4 GP UNDOCUMENTED FILL Loose, dry-damp, dark brown, Sandy BOULDER GRAVEL: 1/2-3 foot diameter angular rock fill with voids, plant debris, . . . TRENCH TERMINATED AT 6 FEET (REFUSAL-OVERSIZE BOULDERS) Figure A-63, Log of Test Trench T 48 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B. 0. . STANDARD PENETRATION TEST • ... DRIVE SAMPLE CUNDISTURBED) . 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >-C9 O _l O X I- H SOIL CLASS CUSCS) TRENCH T49 ELEVATION 448 DATE COMPLETED 9/25/89 EQUIPMENT JD 555 TRACK BACKHOE OT a. S >- ti- OT„* Ul O • Ul b Pi_ OT Ul o MATERIAL DESCRIPTION 2 - 4 - - 6 SC CL ALLUVIUM Loose, dry, dark reddish-brown Clayey- Gravelly SAND Very irregular depositional contact SANTL\GO PEAK VOLCANICS Dense, damp, light reddish-brown, highly fractured, weathered andesitic VOLCANIC ROCK, random oriented fractures TRENCH TERMINATED AT 6 FEET Figure A-64, Log of Test Trench T 49 LCSE CAA/TDT T: cvA/rn/-iT c n ••• SAMPLING UNSUCCESSFUL SAMPLE SYMBOLS ^ ... DISTURBED OR BAG SAMPLE B. 0. . STANDARD PENETRATION TEST 1... DRIVE SAMPLE CUNDISTURBED) . CHUNK SAMPLE Y ... 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >-a o -1 o X SOIL CLASS CUSCS) TRENCH T50 ELEVATION 445 DATE COMPLETED 9/26/89 EQUIPMENT JD 555 TRACK BACKHOE DC S >• ti- gul go >°- oc ^ UI b D: O • o o - 0 MATERIAL DESCRIPTION 2 - 4 - 6 - 8 - Mi sc ALLUVIUM Loose, dry, dark reddish-brown, Clayey- Rocky fine SAND Very irregular depositional contact CL SANTIAGO PEAK VOLCANICS Dense, damp, light orange-tan, highly fractured and altered andesitic VOLCANIC ROCK Fault; NlOW, 70SW, 1/2 inch clay gouge. TRENCH TERMINATED AT 9 FEET Figure A-65, Log of Test Trench T 50 LCSE SAMPLE SYMBOLS ° - '''''''' UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B. 0. . STANDARD PENETRATION TEST 1... DRIVE SAMPLE CUNDISTURBED) . 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >-a o -I o X I- SOIL CLASS CUSCS) TRENCH T51 ELEVATION 435 DATE COMPLETED 9/26/89 EQUIPMENT JD 555 TRACK BACKHOE OT iu^m >- fc-z": go Q: uib p Ss g^ o - 0 MATERIAL DESCRIPTION 2 - ALLUVIUM Loose, dry, dark brown. Rocky Clayey fine SAND SANTLVGO PEAK VOLCANICS Very dense, damp, brownish-gray, moderately random fractured andesitic VOLCANIC ROCK: excavates to large blocky boulders. TRENCH TERMINATED AT 4 FEET -igure A-66, Log of Test Trench T 51 LCSE SAMPLE SYMBOLS ° - ''^"'^'^'''^ UNSUCCESSFUL S ... DISTURBED OR BAG SAMPLE B. 0. .. STANDARD PENETRATION .. CHUNK SAMPLE TEST • . Y . .. DRIVE .. WATER SAMPLE CUNDISTURBED) TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE I I DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o _i o X H SOIL CLASS CUSCS) TRENCH T52 ELEVATION 353 DATE COMPLETED 9/26/89 EQUIPMENT JD 555 TRACK BACKHOE ix OT« (og Ul >- ti- Ul o DC a Ul b Ss g^ o MATERIAL DESCRIPTION - 2 H - 4 6 - 8 10 SC FILL Medium dense, damp, light brown. Clayey, Rocky, coarse SAND CL ALLUVIUM Loose, damp, dark brown Sandy CLAY Irregular "V" shaped canyon contact BONSALL TONALITE Very dense, moist, light brown, highly randomly fractured, tonalite granite ROCK: moderately weathered TRENCH TERMINATED AT 10 FEET Figure A-67, Log of Test Trench T 52 LCSE ^ „ SAMPLING UNSUCCESSFUL SAMPLE SYMBOLS Z, ^ ... DISTURBED OR BAG SAMPLE B.. 0.. . STANDARD PENETRATION TEST 1... DRIVE SAMPLE CUNDISTURBED) . 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. O o o X I- SOIL CLASS CUSCS) TRENCH T53 ELEVATION 358 DATE COMPLETED 9/26/89 EQUIPMENT JD 555 TRACK BACKHOE z „, - ff ^ \ >u In o z S Ul ^ m >- fc- Ul , Ul b DC S^j g^ o MATERIAL DESCRIPTION - 2 - 4 - GC FILL Loose, dry, dark brown. Clayey, Sandy BOULDER-GRAVEL: 12-16 inch diameter boulders with voids, organic debris "V"-shaped canyon-contact BONSALL TONALITE Very dense, damp, light brown, randomly fractured tonalite GRANITIC ROCK: moderately fractured, less weathered. TRENCH TERMINATED AT 6 FEET "igure A-68, Log of Test Trench T 53 LCSE SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL DISTURBED OR BAG SAMPLE B... STANDARD PENETRATION TEST 0 ... CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) 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 UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. O o -I o X SOIL CLASS CUSCS) TRENCH T54 ELEVATION 508 DATE COMPLETED 9/26/89 EQUIPMENT JD 555 TRACK BACKHOE OT : OT ' UJ rn CK S ti- go >^ DC ^ Ul b OC o 0 2 MATERIAL DESCRIPTION CL ALLUVIUM Soft, damp, dark brown Sandy CLAY SANTIAGO PEAK VOLCANICS Very dense, damp, brownish-gray, moderately randomly fractured andesitic VOLCANIC ROCK TRENCH TERMINATED AT 3 FEET "igure A-69, Log of Test Trench T 54 LCSE SAMPLE SYMBOLS SAMPLING UNSUCCESSFUL B S ... DISTURBED OR BAG SAMPLE 0 STANDARD PENETRATION TEST CHUNK SAMPLE DRIVE SAMPLE (UNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > CD O J O X SOIL CLASS CUSCS) TRENCH T55 ELEVATION 472 DATE COMPLETED 9/26/89 EQUIPMENT JD 555 TRACK BACKHOE OT 3 OT g UJ m DC S OT > ti- OT „* Ul O >-°- UI b DC SE O 0 2 - 4 - MATERIAL DESCRIPTION - 6 CL ALLUVIUM Soft, damp, dark brown, Sandy CLAY SANTIAGO PEAK VOLCANICS Very dense, moist, light brownish-gray, moderate random fractured andesitic VOLCANIC ROCK TRENCH TERMINATED AT 6 FEET Figure A-70, Log of Test Trench T 55 LCSE SAMPLE SYMBOLS ••- SAMPLING UNSUCCESSFUL M ... DISTURBED OR BAG SAMPLE B.. 0.. . STANDARD PENETRATION TEST 1... DRIVE SAMPLE CUNDISTURBED) . 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >-a o -1 o X SOIL CLASS CUSCS) TRENCH T56 ELEVATION 454 DATE COMPLETED 9/26/89 EQUIPMENT JD 555 TRACK BACKHOE OT OT ' Ul in a S -u: go oc ^ Ul b O! MATERIAL DESCRIPTION - 2 - - 4 - 6 - CL ALLUVIUM Soft, damp, dark brown Sandy CLAY SC Irregular depositional contact SANTTAGO PEAK VOLCANICS Dense, damp-moist, grayish-brown, weathered andesitic VOLCANIC ROCK TRENCH TERMINATED AT 7 FEET Figure A-71, Log of Test Trench T 56 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B.. 0.. . STANDARD PENETRATION TEST 1... DRIVE SAMPLE (UNDISTURBED) . 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >-a o -I o X SOIL CLASS CUSCS) TRENCH T57 ELEVATION 452 DATE COMPLETED 9/26/89 EQUIPMENT JD 555 TRACK BACKHOE > ti- ^u: go ix 0 2 - 4 6 8 H 10 12 14 SM-SC MATERIAL DESCRIPTION UNDOCUMENTED FILL Loose, damp, light reddish-brown. Clayey BOULDER GRAVEL: oversize angular volcanic rock from 6-24 inch diameter with some clayey sand; voids, debris Very irregular contact ALLUVIUM Loose, damp, dark brown, very Rocky Silty SAND to Clayey SAND SANTTAGO PEAK VOLCANICS Very dense, damp, brownish-gray, moderately fractured andesitic VOLCANIC ROCK TRENCH TERMINATED AT 15 FEET Figure A-72, Log of Test Trench T 57 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL S ... DISTURBED OR BAG SAMPLE B 0 .. STANDARD PENETRATION TEST 1... DRIVE SAMPLE (UNDISTURBED) .. 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o -I o X H -I SOIL CLASS CUSCS) TRENCH T58 ELEVATION 445 DATE COMPLETED 9/27/89 EQUIPMENT JD 555 TRACK BACKHOE m >• t^- ^u! Ul o Q Ul b oc 0 MATERIAL DESCRIPTION 2 - 4 - h 6 - 8 10 GP CL UNDOCUMENTED FELL Loose, damp, medium brown, BOULDER GRAVEL. some sand, clay, voids and oversize angular rock up to 3 feet diameter Very irregular contact ALLUVIUM Soft, wet, dark brown, Sandy CLAY CL SANTIAGO PEAK VOLCANICS Very dense, moist, light brown-orange, highly weathered, randomly fractured andesitic VOLCANIC ROCK: rock has weathered to a sandy clay TRENCH TERMINATED AT 10 FEET ^igure A-73, Log of Test Trench T 58 LCSE SAMPLE SYMBOLS SAMPLING UNSUCCESSFUL B ^ ... DISTURBED OR BAG SAMPLE 0 STANDARD PENETRATION TEST CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o J o X SOIL CLASS CUSCS) TRENCH T59 ELEVATION 434 DATE COMPLETED 9/27/89 EQUIPMENT JD 555 TRACK BACKHOE 1-ff a: h-ui z UJ a. OT ^ «g Ss ^ul go DC a Ul b p 2S o 0 2 - 8 - 10 - SM-SC CL MATERIAL DESCRIPTION ALLUVIUM Loose, dry, dark brown, Silty-Clayey fine SAND Soft, stiff, moist, dark reddish-brown, Sandy CLAY, some angular rock fragments Very irregular depositional contact SANTTAGO PEAK VOLCANICS Very dense, moist, brownish-gray, moderately ranclom fractured, altered andesitic VOLCANIC ROCK: strong pyritic alteration, trace secondary copper stains along fractures TRENCH TERMINATED AT 11 FEET Figure A-74, Log of Test Trench T 59 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B. 0. .. STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED) .. 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >• a o _i o I SOIL CLASS CUSCS) TRENCH T60 ELEVATION 415 DATE COMPLETED 9/27/89 EQUIPMENT JD 555 TRACK BACKHOE SS o gui UJ Q >i oc • UI b OC OT Ul 0 MATERIAL DESCRIPTION 2 - 4 CL ALLUVIUM Stiff, moist, dark brown, Gravelly-Sandy CLAY Irregular depositional contact SANTTAGO PEAK VOLCANIC Very dense, brownish-gray, moderately randomly fractured, altered andesitic VOLCANIC ROCK TRENCH TERMINATED AT 4 FEET -igure A-75, Log of Test Trench T 60 LCSE SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B ^ ... DISTURBED OR BAG SAMPLE 0 .. STANDARD PENETRATION TEST • .. CHUNK SAMPLE Y DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >-a o _i o X I- SOIL CLASS CUSCS) TRENCH T61 ELEVATION 396 DATE COMPLETED 9/27/89 EQUIPMENT JD 555 TRACK BACKHOE OT§ OT g Ul 7S a. S ti- go >°-oc ^ • Ul b ac OT Ul O MATERIAL DESCRIPTION - 2 4 6 8 SC UNDOCUMENTED FILL Medium dense, damp, tan, Clayey-GraveUy fine SAND SC ALLUVIUM Loose, dry, dark brown. Clayey fine SAND SC-CL SANTTAGO PEAK VOLCANICS Dense, damp, light brown, highly fractured, altered andesitic VOLCANIC ROCK: sheeted fractures are N55E,60NW 1/2-1 inch apart TRENCH TERMINATED AT 9 FEET -igure A-76, Log of Test Trench T 61 LCSE SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL DISTURBED OR BAG SAMPLE B ... STANDARD PENETRATION TEST 0 ... CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o J o X SOIL CLASS CUSCS) TRENCH T62 ELEVATION 380 DATE COMPLETED 9/27/89 EQUIPMENT JD 555 TRACK BACKHOE UI HO, OT§ OT g UI Ss >- ti- ^ul gc3 >-b a: UI b Q: MATERIAL DESCRIPTION - 2 8 10 H - 12 SC UNDOCUMENTED FILL Medium dense, tan. Clayey Gravelly fine SAND, toe of road fill for Rancho Santa Fe Road SC-CL ALLUVIUM Loose, damp, dark brown. Clayey fine SAND to Sandy CLAY Very irregular depositional contact SC-CL SANTTAGO PEAK VOLCANICS Dense, moist, light brown, highly weathered andesitic VOLCANIC ROCK TRENCH TERMINATED AT 12 FEET "igure A-77, Log of Test Trench T 62 LCSE SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL DISTURBED OR BAG SAMPLE B... STANDARD PENETRATION TEST 0 ... CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >-C9 O -I O X H SOIL CLASS CUSCS) TRENCH T63 ELEVATION 476 DATE COMPLETED 9/27/89 EQUIPMENT JD 555 TRACK BACKHOE ti- Ul o >-°-Q: ^ Q Ul b oc : z o o 0 2 4 H 6 MATERIAL DESCRIPTION CL TOPSOIL Soft, moist, dark brown, Sandy-Rocky CLAY with gypsum SANTIAGO PEAK VOLCANICS Dense, moist, light brown, mottled with orange/red/green; highly fractured, altered andesitic VOLCANIC ROCK: sheeted fractures 1-6 inches apart are N70W, 60SW; hematite pseudomorphic pyrite, trace of secondary copper minerals TRENCH TERMINATED AT 6 FEET (REFUSAL) "igure A-78, Log of Test Trench T 63 LCSE SAMPLE SYJV4B0LS • ... SAMPLING UNSUCCESSFUL B .. ^ ... DISTURBED OR BAG SAMPLE 0 .. STANOARD PENETRATION TEST DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 OEPTH IN FEET SAMPLE NO. >-O o -I o X SOIL CLASS CUSCS) TRENCH T64 ELEVATION 454 DATE COMPLETED 9/27/89 EQUIPMENT JD 555 TRACK BACKHOE 5g . H y I-^ix ^Ss Ul S q UI OT Ul Q: m fc- oc Q Ul b O O - 0 MATERIAL DESCRIPTION CL ALLUVIUM Soft, moist, dark brown, Sandy-Cobbly CLAY .SC. SANTTAGO PEAK VOLCANICS Very dense, moist, brownish-gray, moderately fractured altered, andesitic VOLCANIC ROCK, random-oriented fractures, 2-6 inches apart. TRENCH TERMINATED AT 3.5 FEET Figure A-79, Log of Test Trench T 64 LCSE SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B ... STANDARD PENETRATION 0 ... CHUNK SAMPLE TEST • . Y . .. DRIVE .. WATER SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >• a o _i o X I- SOIL CLASS CUSCS) TRENCH T65 ELEVATION 508 DATE COMPLETED 9/27/89 EQUIPMENT JD 555 TRACK BACKHOE Ul OT ti- go DC a Ul b oc Pl- OT Ul - 0 - 2 - MATERIAL DESCRIPTION SANTTAGO PEAK VOLCANICS Very dense, reddish brown mottled with tan, blue, high altered fractured, andesitic VOLCANIC ROCK: sheeted fractures 1/2-1 inch apart N20W, vertical; abundant pyrite, sulfides, hydrothermal alteration. TRENCH TERMINATED AT 3 FEET Figure A-80, Log of Test Trench T 65 LCSE SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST S ... DISTURBED OR BAG SAMPLE 0 ... CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 SAMPLE NO. SOIL CLASS CUSCS) TRENCH T66 ELEVATION 277 DATE COMPLETED 9/28/89 EQUIPMENT JD 555 TRACK BACKHOE o^2 OT 3 OT Ul : DC OT fc- a UI ^ a Ss ot o MATERIAL DESCRIPTION 4 - - 6 - T66-1 T66-2 SC LANDSLIDE DEBRIS Loose to medium-dense, damp, dark reddish- brown. Clayey fine SAND; some angular weathered volcanic pebbles-gravel CH Becomes moist, with 6-10 inch boulder gravel at 13 feet Irregular transitional contact Soft, wet to saturated, fight tan-green, Sandy CLAY, slickensided surfaces TRENCH TERMINATED AT 17 FEET Figure A-81, Log of Test Trench T 66 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL B.. . STANDARD PENETRATION TEST • .. . DRIVE SAMPLE (UNDISTURBED) ^ ... DISTURBED OR BAG SAMPLE 0.. . CHUNK SAMPLE ¥ •• . WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 TRENCH T67 ELEVATION 271 DATE COMPLETED 9/28/89 EQUIPMENT JD 555 TRACK BACKHOE OT OT OT ' Ul ', D: \^ >• H Ul o • Ul b DC P I- MATERIAL DESCRIPTION TERRACE DEPOSIT Loose to medium-dense, damp to moist, dark reddish-brown very Clayey fine SAND Becomes more clayey, wet at 15 feet Seepage, caving SANTTAGO PEAK VOLCANICS Hard, wet, light grey-green mottled with red Sandy CLAY: very weathered and fractured andesitic VOLCANIC ROCK TRENCH TERMINATED AT 19 FEET igure A-82, Log of Test Trench T 67 LCSE SAMPLE SYMBOLS . SAMPLING UNSUCCESSFUL E.. . STANDARD PENETRATION TEST • .. . DRIVE SAMPLE (UNDISTURBED) . DISTURBED OR BAG SAMPLE 0.. . CHUNK SAMPLE ¥ •• . WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. SOIL CLASS CUSCS) TRENCH T68 ELEVATION 258 DATE COMPLETED 9/28/89 EQUIPMENT JD 555 TRACK BACKHOE > ti- Ul D O UI b 0 2 - 4 - 6 8 10 12 14 ^ MATERIAL DESCRIPTION SM-SC SC-GC "cr ALLUVIUM Loose, damp, dark grayish-brown, Silty- Clayey fine SAND, root voids, roots. Very irregular contact TERRACE DEPOSIT Medium dense, moist-wet, dark reddish-brown, very Clayey-Sandy COBBLE-BOULDER GRAVEL Seepage, caving SANTLAGO PEAK VOLCANICS Stiff-hard, wet, light green, mottled with red, Sandy-Rocky CLAY; slickensided fractures; very weathered volcanic rock TRENCH TERMINATED AT 15 FEET Figure A-83, Log of Test Trench T 68 LCSE SAMPLE SYMBOLS UNSUCCESSFUL B... STANDARD PENETRATION TEST 1... DRIVE SAMPLE (UNDISTURBED) ^ ... DISTURBED OR BAG SAMPLE 0... CHUNK SAMPLE Y ... 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. SOIL CLASS CUSCS) TRENCH T69 ELEVATION 295 DATE COMPLETED 9/28/89 EQUIPMENT JD 555 TRACK BACKHOE H y I- ff 1- ff 2 \ K«3 III H <—I OT UI 7X a. S >• ti- Si£ go oc ^ uib p Ss - 2 - 4 6 - 8 10 - 12 - 14 MATERIAL DESCRIPTION <3M-GC: ALLUVIUM Loose, damp, dark brown, Clayey-Sandy COBBLE-BOULDER GRAVEL, some silt GC Irregular, sharp depositional contact inclined westward GC-CL TERRACE DEPOSIT Medium dense to dense, moist, light reddish- brown-orange, very Clayey COBBLE-BOULDER GRAVEL, some sand Becomes light tan, mottled white sandy clay matrix at 12 feet with more boulders TRENCH TERMINATED AT 14 FEET (REFUSAL-OVERSIZE BOULDERS) Figure A-84, Log of Test Trench T 69 LCSE SAMPLE SYMBOLS ° - '''''''' UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B... 0... STANOARD PENETRATION TEST DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. SOIL CLASS CUSCS) TRENCH T70 ELEVATION 276 DATE COMPLETED 9/28/89 EQUIPMENT JD 555 TRACK BACKHOE S UJ- UI S OT y I- go DC Q Ul b OC p l_ MUI gz ^ O o MATERIAL DESCRIPTION 4 6 8 - 10 - 12 14 SC TOPSOIL Loose, damp, dark brown. Clayey fine SAND CL DELMAR FORMATION Hard, damp, light brown with white bands, Silty CLAYSTONE Hard, moist, lighl green-"oTive~, SUty CLAYSTONE: fractures random, but with some slickensided and/or thin randomly oriented discontinuous remolded clay seams Becomes very hard, blocky at 12 feet TRENCH TERMINATED AT 14 FEET Figure A-85, Log of Test Trench T 70 LCSE SAMPLE SYMBOLS ° - ''"'^""^ UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B... STANOARO PENETRATION TEST 0 ... CHUNK SAMPLE 1... DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >-a o -I o X I- H _l SOIL CLASS CUSCS) TRENCH T71 ELEVATION 270 DATE COMPLETED 9/28/89 EQUIPMENT JD 555 TRACK BACKHOE r-l -y r- ^ix I" m a. S fc- Ul o >-°- Q s- S| gz o MATERIAL DESCRIPTION - 2 4 - GC-GW ALLUVIUM Loose, dry, dark brown, Clayey-Sandy BOULDER GRAVEL Irregular, "V" shaped contact (ancient canyon outline) SANTTAGO PEAK VOLCANICS Very dense, moist, light reddish-brown, ranciomly fractured and weathered andesitic VOLCANIC ROCK TRENCH TERMINATED AT 6 FEET "igure A-86, Log of Test Trench T 71 LCSE SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST ^ ... DISTURBED OR BAG SAMPLE 0 ... CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) 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 UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. 0-4367-402 DEPTH IN FEET SAMPLE NO. > a o _i o X SOIL CLASS CUSCS) TRENCH T72 ELEVATION 465 DATE COMPLETED 9/29/89 EQUIPMENT JD 555 TRACK BACKHOE Ul z^^ ix 3 OT H OT ;j UJ ffl oc S > ti-gul Ul " • o >-°-oc • Ul p Ss gz o 0 2 - 4 MATERIAL DESCRIPTION 6 8 H 10 12 ALLUVIUM Soft, moist, dark brown, Sandy CLAY CL Irregular "V" shaped depositional contact CL-SC SANTTAGO PEAK VOLCANICS Dense, moist, light brown mottled with tan/red, very weathered altered andesitic VOLCANIC ROCK: highly randomly fractured; becoming more dense with depth TRENCH TERMINATED AT 12 FEET Figure A-87, Log of Test Trench T 72 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B.. 0.. . STANDARD PENETRATION TEST 1... DRIVE SAMPLE (UNDISTURBED) . 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. January 8, 1990 FILE NO. 0-4367-402 DEPTH IN FEET SAMPLE NO. > a o -I o X I- SOIL CLASS CUSCS) TRENCH T73 ELEVATION 468 DATE COMPLETED 9/29/89 EQUIPMENT JD 555 TRACK BACKHOE Z i,. - UI o D: • Ul b oc MATERIAL DESCRIPTION CL TOPSOIL Soft, dry-damp, dark brown, Sandy-Rocky CLAY SANTTAGO PEAK VOLCANICS Very dense, damp, dark brownish-gray, moderately randomly fractured andesitic VOLCANIC ROCK TRENCH TERMINATED AT 2.5 FEET (REFUSAL) Figure A-88, Log of Test Trench T 73 LCSE SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B STANDARD PENETRATION TEST ... DISTURBED OR BAG SAMPLE 0... CHUNK SAMPLE Y ... DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. 0-4367-402 DEPTH IN FEET SAMPLE NO. a o -I o X SOIL CLASS CUSCS) TRENCH T74 ELEVATION 482 DATE COMPLETED 9/29/89 EQUIPMENT JD 555 TRACK BACKHOE OT OT OT g UJ m n: S > ti- go DC ^ Uib OC OT Ul 0 2 - 4 - MATERIAL DESCRIPTION CL SLOPEWASH Soft, moist, dark brown, Sandy CLAY Irregular depositional contact SANTTAGO PEAK VOLCANICS Dense, moist, brownish-grey, moderately randomly fractured andesitic VOLCANIC ROCK: fractures spaced 6-10 inches TRENCH TERMINATED AT 7 FEET (NEAR REFUSAL) Figure A-89, Log of Test Trench T 74 LCSE SAMPLE SYMBOLS ° - '''''''' ^^succsss^u. ^ ... DISTURBED OR BAG SAMPLE B.. 0.. . STANDARD PENETRATION TEST 1... DRIVE SAMPLE CUNDISTURBED) . 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o -I o X I- SOIL CLASS CUSCS) TRENCH T75 ELEVATION 471 DATE COMPLETED 9/29/89 EQUIPMENT JD 555 TRACK BACKHOE Q: »-Ul z UJ si OTg UI sS gl UI o D: a 0 2 4 - MATERIAL DESCRIPTION - 6 CL SLOPEWASH Soft, moist, dark brown, Sandy CLAY Very irregular contact SANTTAGO PEAK VOLCANICS Very dense, damp, brownish-grey, moderately randomly fractured andesitic VOLCANIC ROCK. fractures spaced 2-6 inches TRENCH TERMINATED AT 6 FEET (NEAR REFUSAL) Figure A-90, Log of Test Trench T 75 LCSE SAMPLE SYMBOLS ° ••• UNSUCCESSFUL B. . STANDARD PENETRATION TEST 1. . DRIVE SAMPLE CUNDISTURBED) ^ ... DISTURBED OR BAG SAMPLE 0. . CHUNK SAMPLE Y . . WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION Ap AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. 0-4367-402 DEPTH IN FEET SAMPLE NO. > a o -I o X t-H -I SOIL CLASS CUSCS) TRENCH T76 ELEVATION 455 DATE COMPLETED 9/29/89 EQUIPMENT JD 555 TRACK BACKHOE > ti- go OC ^ Q iX - 0 - 2 MATERIAL DESCRIPTION 4 - CL SLOPEWASH Soft, damp, dark reddish-brown Sandy CLAY Very irregular contact SANTTAGO PEAK VOLCANICS Dense, damp, light brown-grey, moderately weathered andesitic VOLCANIC ROCK TRENCH TERMINATED AT 6 FEET "igure A-91, Log of Test Trench T 76 LCSE SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B .. S ... DISTURBED OR BAG SAMPLE 0 .. STANDARD PENETRATION TEST • CHUNK SAMPLE Y DRIVE SAMPLE CUNDISTURBED) WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES. January 8, 1990 FILE NO. D-4367-402 OEPTH IN FEET SAMPLE NO. >-a o H _l SOIL CLASS CUSCS) TRENCH T77 ELEVATION 485 DATE COMPLETED 9/29/89 EQUIPMENT JD 555 TRACK BACKHOE UJ , ix OT§ OTg m Ul DC^ fc- Ul o oc ^ • UI ^ p Ss gz o MATERIAL DESCRIPTION - 2 - 4 - - 6 CL SLOPEWASH Stiff, damp, dark reddish-brown Sandy CLAY Very irregular contact SANTTAGO PEAK VOLCANICS Dense, damp, light reddish-brown, moderately weathered andesitic VOLCANIC ROCK TRENCH TERMINATED AT 6 FEET Figure A-92, Log of Test Trench T 77 LCSE SAMPLE SYMBOLS ° - ''''''''' UNSUCCESSFUL S ... DISTURBED OR BAG SAMPLE B. 0. . STANOARO PENETRATION TEST 1... DRIVE SAMPLE CUNDISTURBED) . CHUNK SAMPLE Y ... 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 UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 TRENCH T78 ELEVATION 510 DATE COMPLETED 10/2/89 EQUIPMENT JD 555 TRACK BACKHOE Si.: ^ix HS3 III " Ul =i Ss >-t- >-5; Q: UI b oc OT Ul O O MATERIAL DESCRIPTION UNDOCUMENTED FILL Soft, damp to dry, medium grey-green mottled with brown, Sandy CLAY: cobbles, gravel and scattered concrete chunks. ALLUVIUM Soft, moist, dark brown, Sandy CLAY TRENCH TERMINATED AT 20 FEET Figure A-93, Log of Test Trench T 78 LCSE SAMPLE SYMBOLS ° - UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B. 0. . STANDARD PENETRATION TEST 1... DRIVE SAMPLE CUNDISTURBED) . CHUNK SAMPLE Y ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. SOIL CLASS CUSCS) TRENCH T79 ELEVATION 513 DATE COMPLETED 10/2/89 EQUIPMENT JD 555 TRACK BACKHOE OT ^ OT g UI > Z"^ go >°- Q UI b OC Si o! o o 0 2 4 - 6 - 8 - 10 - 12 - 14 16 -I MATERIAL DESCRIPTION 18 UNDOCUMENTED FELL Soft, damp to dry, medium grey-green, mottled brown, Sandy CLAY: some oversize rock, concrete, etc . . . CL ALLUVIUM Soft, wet, dark brown, Sandy CLAY TRENCH TERMINATED AT 18 FEET figure A-94, Log of Test Trench T 79 LCSE SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL S ... DISTURBED OR BAG SAMPLE B... STANDARD PENETRATION TEST 0 ... CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. D: > UJ a 1-o ff -I 3 o Q X Z H P H o _l oc a SOIL CLASS CUSCS) TRENCH T80 ELEVATION 443 DATE COMPLETED 10/2/89 EQUIPMENT JD 555 TRACK BACKHOE Suj- OT: ui^m OL fc-UI b oc s^ o 0 2 4 MATERIAL DESCRIPTION TOPSOIL Loose, dry, dark brown, Silty coarse SAND BONSALL TONALITE Dense, damp,light brown-tan, highly weathered coarse crystalline GRANITIC ROCK: sheeted jointing N25E, 85SE 1-2 inches apart SM TRENCH TERMINATED AT 4 FEET "igure A-95, Log of Test Trench T 80 LCSE SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B S ... DISTURBED OR BAG SAMPLE 0 STANOARD PENETRATION TEST • ... DRIVE SAMPLE CUNDISTURBED) 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 ANO TIMES. January 8, 1990 FILE NO. 0-4367-402 DEPTH IN FEET SAMPLE NO. > a o -I o X I- H SOIL CLASS CUSCS) TRENCH T81 ELEVATION 451 DATE COMPLETED 10/2/89 EQUIPMENT JD 555 TRACK BACKHOE Z III - Ul ^ m D. -.^ ti- (Oii* >-°- a: ^ uib oc Pu-OT O O 0 2 h 4 MATERIAL DESCRIPTION TOPSOIL Loose, dry, dark brown, Silty coarse SAND BONSALL TONALITE Very dense, light brown-tan, moderately weathered coarse crystalline GRANITIC ROCK blocky jointing; 2 systems: N65E, 50SE and N30E, 70SE; spaced 2-12 inches apart TRENCH TERMINATED AT 4 FEET -igure A-96, Log of Test Trench T 81 LCSE SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B .. ^ ... DISTURBED OR BAG SAMPLE 0 .. STANDARD PENETRATION TEST CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o -I o X SOIL CLASS CUSCS) TRENCH T82 ELEVATION 550 DATE COMPLETED 10/2/89 EQUIPMENT JD 555 TRACK BACKHOE Ul SO, OT 3 OT g Ss OT >- OT„* UI O • Ul b DC Sy o o 0 2 h 4 ^ MATERIAL DESCRIPTION TOPSOIL Loose, dry, dark brown. Clayey SAND - 8 SANTTAGO PEAK VOLCANICS Dense, damp, light reddish-brown-orange, very fractured weathered and altered andesitic VOLCANIC ROCK Sheet fracturing at N80E, 40-50SE at 5 feet TRENCH TERMINATED AT 8 FEET Figure A-97, Log of Test Trench T 82 LCSE SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B S ... DISTURBED OR BAG SAMPLE 0 STANDARD PENETRATION TEST CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. 0-4367-402 OEPTH IN FEET SAMPLE NO. SOIL CLASS CUSCS) TRENCH T83 ELEVATION 548 DATE COMPLETED 10/2/89 EQUIPMENT JD 555 TRACK BACKHOE z H ff z S Ul • o >-°- Ul b p Ss gz 0 2 -I MATERIAL DESCRIPTION - 4 SC TOPSOIL Loose, dry, dark reddish-brown very Clayey fine SAND SANTIAGO PEAK VOLCANICS Very dense, damp, dark brown-grey, moderately fractured andesitic VOLCANIC ROCK: blocky 6-10 inch spaced fractures at N40W, 75SW and N30E, vertical TRENCH TERMINATED AT 4 FEET (REFUSAL) Figure A-98, Log of Test Trench T 83 LCSE SAMPLE SYMBOLS ° ••• UNSUCCESSFUL B. . STANDARD PENETRATION TEST • .. . DRIVE SAMPLE CUNDISTURBED) ^ ... DISTURBED OR BAG SAMPLE 0. . CHUNK SAMPLE ¥ •• . WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE OATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. 0-4367-402 DEPTH IN FEET SAMPLE NO. >• O o -J o X I- SOIL CLASS CUSCS) TRENCH T 84 ELEVATION 562 DATE COMPLETED 10/2/89 EQUIPMENT JD 555 TRACK BACKHOE ^OT ^OT 4. ill Ul >- go DC. a UI OT o MATERIAL DESCRIPTION - 2 - SANTTAGO PEAK VOLCANICS Very dense, damp, dark brownish-grey, moderately randomly fractured, andesitic VOLCANIC ROCK: blocky joints are at N60W, 45NE and N70E, 85 NW spaced from 8-12 inches apart. TRENCH TERMINATED AT 3.5 FEET Figure A-99, Log of Test Trench T 84 LCSE SAMPLE SYMBOLS ° ••• UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B... STANDARD PENETRATION 0 ... CHUNK SAMPLE TEST • . Y . .. DRIVE .. WATER SAMPLE CUNDISTURBED) TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT UARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o _i o X I- SOIL CLASS CUSCS) TRENCH T85 ELEVATION 548 DATE COMPLETED 10/2/89 EQUIPMENT JD 555 TRACK BACKHOE OT 3 Sg Ss >- «u: DC ^ UI b DC OT UI - 0 MATERIAL DESCRIPTION 2 ^ 4 6 H - 8 SC SC TOPSOIL Loose, dry, dark reddish-brown, Clayey- Rocky SAND SANTTAGO PEAK VOLCANICS Very dense, moist, light reddish-brown to grey, moderate to highly fractured and weathered andesitic VOLCANIC ROCK fractures are N15E, 70SE and N80W, 80SW with sheet to blocky spacing from 1/2-6 inches TRENCH TERMINATED AT 8 FEET Figure A-lOO, Log of Test Trench T 85 LCSE SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B... STANDARD PENETRATION TEST 0 ... CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. > a o -I o X SOIL CLASS CUSCS) TRENCH T86 ELEVATION 545 DATE COMPLETED 10/2/89 EQUIPMENT JD 555 TRACK BACKHOE Ul MO ^i DC fc I-UJ z Ul a. VI 3 OT g UJ m QC S >- gul UJ f\ >-°- DC ^ Ul b a. Pi-OT Ul 0 2 h 4 MATERIAL DESCRIPTION SC TOPSOIL Loose, dry, dark reddish-brown. Clayey fine SAND SANTLAGO PEAK VOLCANICS Very dense, damp, dark brownish-grey, highly fractured andesitic VOLCANIC ROCK: sheet-fractures are N-S, 60E and N85W, 60SW at 1/4-2 inch spacing; brittle. TRENCH TERMINATED AT 4 FEET (NEAR REFUSAL) -igure A-101, Log of Test Trench T 86 LCSE SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST ^ ... DISTURBED OR BAG SAMPLE 0 ... CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) 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. January 8, 1990 FILE NO. 0-4367-402 DEPTH IN FEET SAMPLE NO. > a o -1 o X t- H _l SOIL CLASS CUSCS) TRENCH T87 ELEVATION 509 DATE COMPLETED 10/2/89 EQUIPMENT JD 555 TRACK BACKHOE y ti-gu! go oc Ul b ss • o o MATERIAL DESCRIPTION 2 - 4 - - 6 CL UNDOCUMENTED FILL Soft, damp, dark brown, olive, Sandy CLAY SM-SC 311 TOPSOIL Loose, damp-dry, dark brown, Silty-Clayey fine SAND SANTTAGO PEAK VOLCANICS Dense, damp, light reddish-brown, moderately fractured and weathered andesitic VOLCANIC ROCK TRENCH TERMINATED AT 7 FEET Figure A-102, Log of Test Trench T 87 LCSE SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL S ... DISTURBED OR BAG SAMPLE B ... STANDARD PENETRATION TEST 0 ... CHUNK SAMPLE .. DRIVE SAMPLE CUNDISTURBED) .. WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. 0-4367-402 OEPTH IN FEET SAMPLE NO. SOIL CLASS CUSCS) TRENCH T88 ELEVATION 506 DATE COMPLETED 10/2/89 EQUIPMENT JD 555 TRACK BACKHOE Q , u. OT; >-ti--ul go >b oc a s- S| o 0 2 4 - 6 - 8 10 MATERIAL DESCRIPTION UNDOCUMENTED FILL Soft, damp, dark brown-olive, Sandy CLAY CL CL ALLUVIUM Soft, damp-moist, dark reddish-brown Sandy CLAY SC SANTIAGO PEAK VOLCANICS Dense, moist, light brown, mottled with red, green, highly altered, weathered randomly fractured, andesitic VOLCANIC ROCK TRENCH TERMINATED AT 11 FEET J Figure A-103, Log of Test Trench T 88 LCSE SAMPLE SYMBOLS UNSUCCESSFUL ^ ... DISTURBED OR BAG SAMPLE B. 0. .. STANDARD PENETRATION TEST DRIVE SAMPLE CUNDISTURBED) .. CHUNK SAMPLE Y ... 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. January 8, 1990 FILE NO. D-4367-402 OEPTH IN FEET SAMPLE NO. >-a o -I o X I- SOIL CLASS CUSCS) TRENCH T89 ELEVATION 514 DATE COMPLETED 10/2/89 EQUIPMENT JD 555 TRACK BACKHOE OT S{ OT g UJ m Ss >- gul go • Ul b DC OT i - 0 MATERIAL DESCRIPTION 2 - 4 - 6 - 8 - 10 CL UNDOCUMENTED FTLL Soft, damp, dark gray-olive-mottled with brown, Sandy CLAY SM-SC TOPSOIL Loose, damp, dark brown, Silty-Clayey fine SAND SANTTAGO PEAK VOLCANICS Very dense, moist, medium brown-grey, slightly-moderately weathered andesitic VOLCANIC ROCK TRENCH TERMINATED AT 11 FEET Figure A-104, Log of Test Trench T 89 LCSE SAMPLE SYMBOLS ° - ^ ... DISTURBED OR BAG SAMPLE B.. 0.. . STANDARD PENETRATION TEST 1... DRIVE SAMPLE CUNDISTURBED) . CHUNK SAMPLE Y ... UATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS ANO TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. y a o J o X SOIL CLASS CUSCS) TRENCH T90 ELEVATION 491 DATE COMPLETED 10/2/89 EQUIPMENT JD 555 TRACK BACKHOE UJ so^: OT : OT ' UJ i UI ^ m y ti- go DC Ul b DC Pl-OT Ul O 0 2 - 4 - 6 - MATERIAL DESCRIPTION CL SLOPEWASH Soft, moist, dark brown, Sandy CLAY Very irregular contact SC SANTTAGO PEAK VOLCANICS Dense, moist, light brown, moderately weathered and randomly fractured andesitic VOLCANIC ROCK TRENCH TERMINATED AT 7 FEET Figure A-105, Log of Test Trench T 90 LCSE c A ^/rDT c^xxorxi c ^ ... SAMPLING UNSUCCESSFUL SAMPLE SYMBOLS ^ ... DISTURBED OR BAG SAMPLE B.. 0.. . STANOARO PENETRATION TEST 1... DRIVE SAMPLE CUNDISTURBED) . 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. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >-a o M SOIL CLASS CUSCS) TRENCH T91 ELEVATION 332 DATE COMPLETED 9/22/89 EQUIPMENT JD 555 TRACK BACKHOE S3 m° UJ ffl oc S y guI UI o €C Ul b DC O MATERIAL DESCRIPTION 0 2 - 4 - 6 cl SLOPEWASH Soft, moist, dark brown, Sandy CLAY Very irregular contact SANTTAGO PEAK VOLCANICS Dense, damp, light reddish-brown, weathered moderately random fractured VOLCANIC ROCK TRENCH TERMINATED AT 6 FEET Figure A-106, Log of Test Trench T 91 LCSE SAMPLE SYMBOLS • SAMPLING UNSUCCESSFUL B ^ ... DISTURBED OR BAG SAMPLE 0 STANDARD PENETRATION TEST CHUNK SAMPLE DRIVE SAMPLE CUNDISTURBED) WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. January 8, 1990 FILE NO. D-4367-402 DEPTH IN FEET SAMPLE NO. >-a o -I o X I- SOIL CLASS CUSCS) TRENCH T92 ELEVATION 453 DATE COMPLETED 10/2/89 EQUIPMENT JD 555 TRACK BACKHOE OT SJ' OT g UJ m oc S y ti- OT I, UJ o y°- oc ^ UJ b UJ 0 2 - 4 - 6 A MATERIAL DESCRIPTION CL SC SLOPEWASH Soft, moist, dark brown Sandy CLAY Very irregular contact SANTIAGO PEAK VOLCANICS Dense, moist, light brown, moderately weathered and randomly fractured andesitic VOLCANIC ROCK TRENCH TERMINATED AT 7 FEET Figure A-107, Log of Test Trench T 92 LCSE SAMPLE SYMBOLS • ... SAMPLING UNSUCCESSFUL B STANDARD PENETRATION TEST DISTURBED OR BAG SAMPLE 0 ... CHUNK SAMPLE • DRIVE SAMPLE CUNDISTURBED) Y ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION ANO AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. File No, D-4367-H02 January 8, 1990 X I- o. ut o 0 L 20- iii 40- 0 L O-l 20- 40- 60'-l SECONDS / FOOT 20 _L_ 40 _1 20 40 0 1- 0-1 20- 0-1 20- 40-" 20 I HT-2 0 20 1 I I HT-4 LEGEND RIPPABLE MARGINALLY RIPPABLE NON-RIPPABLE LOGS OF AIR TRACK BORINGS RANCHO SANTA FE ROAD REALIGNMENT Figure A-108 File No. D-4367-H02 January 8, 1,990 •- UJ Ili u. 0. Ul a O-l 20- 40'-l 0 L O-l 20- 40- SECONDS / FOOT 20 _JL_ 40 _L_ HT-5 20 40 J I I I 0 L O-l 20- 40-" 0 L 20- 40"-J LEGEND 20 _I I HT-6 20 I HT-8 I I RIPPABLE MARGINALLY RIPPABLE CZ3 NON-RIPPABLE 40 _J LOGS OF AIR TRACK BORINGS RANCHO SANTA FE ROAD REALIGNMENT CARLSBAD, CALIFORNIA Figure A-109 File No. D-4367-H02 January 8, 1990 hi li. 0 L O-l 20- 40'-' 0-1 20- 40'- 20' _L_ SECONDS 40' _J HT-9 20" J I HT-II LEGEND I 1 RIPPABLE V/A MARGINALLY RIPPABLE NON-RIPPABLE / FOOT 0 L 0-1 20'- 40-" 0 1 20- 40'-J 20' 40' _1 HT- 10 20 _l I HT-12 LOGS OF AIR TRACK BORINGS RANCHO SANTA FE ROAD REALIGNMENT CARLSBAD, CALIFORNIA Figure A-l10 File No. D-4367-H02 January 8, 1990 0 L 0-1 20'- 40-" 0 L 0-1 1- Ill 20'- 40- 60—" SECONDS / FOOT 20 40 0 20 -J ' 1 I I L_ HT-13 20 -1 I L 40 LEGEND _ .RIPPABLE —MARGINALLY RIPPABLE 1 1 NON-RIPPABLE O-l 20'- 40'- 60'- 60 0 -J I L O-l 20'- 40'- 60'- 80'-" HT-14 20 _L_ 40 _J_ 60 LOGS OF AIR TRACK BORINGS RANCHO SMTA FE ROAD REALIGNMENT CARLSBAD, CALIFORNIA Fieure A-l11 File No. D-4367-H02 January 8, L990 o o 0. IlJ a 0 L 0-1 20- 40'-^ 0 L O-I 20- 40- 60-J SECONDS / FOOT 20 HT-17 20 HT-19 O-I 20- 40'- 0 L. 0-1 20'- 40- LEGEND 20 _l I HT-18 20 .J I HT-20 I 1 RIPPABLE .-J^ARGINALLY RIPPABLE LOGS OF AIR TRACK BORINGS RANCHO SANTA FE ROAD REALIGNMENT CARLSBAD, CALIFORNIA Figure A-l12 File No. D-4367-H02 January 8, 1990 hi hi Q. hi Q 0-1 20'- 40- 60'-" 0 L 20'- 40'- 20 SECONDS / FOOT 40 HT-21 20 I 40 _1 HT-23 LEGEND —RIPPABLE —MARGINALLY RIPPABLE NON - RIPPABLE 20- 40-" 0 L 0-1 20- 40- 60- 20 HT-22 20 40 A I HT-24 LOGS OF AIR TRACK BORINGS RANCHO SANTA FE ROAD REALIGNMENT CARLSBAD, CALIFORNIA Figure A-l13 File No. D-4367-H02 January 8, 1990 O L 0-1 20'- iii hi li. 0 L O-I X 1- 0. Ul Q 20- 40- 60- SECONDS / FOOT 20 -J O L O-I HT-25 20- 20 _i_ 40 -J 40- O-l 20'- 40'- LEGEND —RIPPABLE —MARGINALLY RIPPABLE NON-RIPPABLE 60'- 20 _L_ 40 HT-26 20 I 40 LOGS OF AIR TRACK BORINGS RANCHO SANTA FE ROAD REALIGNMENT CARLSBAD, CALIFORNIA Figure A-l14 File No. D-4367-H02 January 8, 1990 X y- a. Ill o 0 L 0-1 20- 40- O L 20'- 40- 60- SECONDS 20 _J HT-29 20 _l 1 HT-31 FOOT 0 L O-l 20- 40'- 0 L O-l 20'- 40- 20 _l HT-30 20 I 40 _J HT-32 LEGEND I 1 RIPPABLE ..MARGINALLY RIPPABLE LOGS OF AIR TRACK BORINGS RANCHO SANTA FE ROAD REALIGNMENT CARLSBAD, CALIFORNIA Figure A-115 File No. D-4367-H02 January 8, 1990 0 L 20'- 40- a. ill a 60- 0 L O-I 20- 40'-" 20 _J_ SECONDS 40 20 I HT-35 LEGEND RIPPABLE —MARGINALLY RIPPABLE NON - RIPPABLE / FOOT 0 L_ 20- 40'- 0 L O-I 20- 40'- 60- HT-34 20 I 20 _L_ HT-36 40 _J 40 -J LOGS OF AIR TRACK BORINGS RANCHO SANTA FE ROAD REALIGNMENT CARLSBAD, CALIFORNIA Figure A-l16 File No. D-4367-H02 January 8, 1990 O L 0-1 20- Ui hi ll. 40- 60-" 0. tli Q 0 L 20—1 S E C 0 N D S 20 _J I HT-37 20 -I I I HT-39 LEGEND I I RIPPABLE ...MARGINALLY RIPPABLE FOOT 0—1 20- 40'- 60'-" 0 L 0-1 20- 20 HT-38 20 I HT-40 LOGS OF AIR TRACK BORINGS RANCHO SANTA FE ROAD REALIGNMENT CARLSBAD, CALIFORNIA Figure A-l17 File No. D-4367-H02 January 8, 1990 0 L O-I 20'- I- lij 0 L 0-1 a tij Q 20- 40- SECONDS / FOOT 20 40 _J I 1 HT-41 20 HT-43 0-1 20'- 0-1 20—" LEGEND 20 J I HT-42 20 HT-44 I 1 RIPPABLE — MARGINALLY RIPPABLE NON-RIPPABLE LOGS OF AIR TRACK BORINGS RANCHO SANTA FE ROAD RELAIGNMENT CARLSBAD, CALIFORNIA Figure A-118 FUe No. D-4367-H02 January 8, 1990 TABLE L\ Air-Track RippabiUty Interpretation Air-Track Boring No. Depth rfeet^ Interpretation HT-1 0-30 Rippable 30-48 Nonrippable HT-2 0-8 Rippable 8-30 Marginal HT-3 0-15 Rippable 15-45 Marginal 45-60 Nonrippable HT-4 0-5 Rippable 5-36 Marginal HT-5 0-8 Rippable 8-20 Marginal 20-36 Nonrippable HT-6 0-30 Rippable 30-36 Marginal HT-7 0-11 Rippable 11-45 Nonrippable HT-8 0-15 Rippable 15-36 Marginal to Nonrippable HT-9 0-15 Rippable 15-36 Nonrippable HT-10 0-15 Rippable 15-36 Marginal to Nonrippable HT-11 0-45 Rippable HT-12 0-5 Rippable 5-36 Marginal HT-13 0-25 Rippable 25-36 Marginal to Nonrippable HT-14 0-45 Rippable 45-55 Marginal FUe No. D-4367-H02 January 8, 1990 TABLE IA (continued) Air-Track RippabUitv Interpretation Air-Track ring No. Depth ffeet^ Interpretation HT-15 0-5 5-50 Rippable Nonrippable HT-16 0-15 15-80 Rippable to Marginal Nonrippable HT-17 0-35 35-40 Rippable Marginal HT-18 0-30 30-45 Rippable Marginal HT-19 0-60 Rippable HT-20 0-50 Rippable HT-21 0-10 10-60 Nonrippable Nonrippable HT-22 0-25 25-35 Rippable Marginal HT-23 0-10 10-50 Rippable Marginal to Nonrippable HT-24 0-10 10-65 Rippable Marginal to Nonrippable HT-25 0-25 Rippable HT-26 0-10 10-60 Rippable Nonrippable HT-27 0-10 10-70 Rippable Marginal to Nonrippable HT-28 0-20 20-55 Rippable Marginal to Nonrippable HT-29 0-50 Rippable FUe No. D-4367-H02 January 8, 1990 TABLE IA (continued) Air-Track RippabiUty Interpretation Ak-Track Boring No. Depth rfeet^ Interpretation HT-30 0-50 Rippable HT-31 0-55 Rippable to Marginal HT-32 0-5 Rippable 5-40 Marginal to Nonrippable HT-33 0-3 Rippable 3-60 Marginal to Nonrippable 60-70 Nonrippable HT-34 0-15 Rippable 15-45 Marginal to Nonrippable HT-35 0-30 Rippable 30-36 Marginal HT-36 0-25 Rippable to Marginal 25-65 Marginal to Nonrippable HT-37 0-5 Rippable 5-10 Rippable to Margmal HT-38 0-10 Rippable 10-60 Rippable to Marginal HT-39 0-10 Rippable 10-20 Marginal HT-40 0-30 Rippable HT-41 0-10 Rippable 10-25 Marginal to Nonrippable HT-42 0-30 Rippable HT-43 0-40 Rippable 40-50 Rippable to Marginal HT-44 0-15 Rippable 15-20 Marginal FUe No. D-4367-H02 January 8, 1990 TABLE IB Seismic Traverses Velocity (ft/sec) Depth (ft) Approx. Seismic Traverse No. V 1 V 2 V 3 D 1 D 2 Length of Traverse Max. D Explo fft^ -(- 5-1 2790 8980 ____ 14 .... 100 30 5-2 1640 6720 — 6 — 100 30 5-3 1570 6810 — 9 — 100 30 5-4 2150 4740 — 4 — 100 30 5-5 2420 4760 — 4 — 100 30 5-6 1560 5390 — 8 — 100 30 5-7 1550 6120 — 4 — 100 30 5-8 1150 5250 — 5 — 100 30 5-9 1500 5820 — 8 — 100 30 5-10 1990 8560 — 4 — 100 30 5-11 1640 6920 — 5 — 100 30 5-12 2240 8270 — 4 — 100 30 5-13 1230 5240 — 3 — 100 30 5-14 1570 5470 — 5 — 100 30 5-15 1770 7330 — 3 — 100 30 5-16 1640 7090 — 4 — 100 30 5-17 1102 5330 — 4 — 100 30 5-18 1090 6650 — 4 — 100 30 5-19 1120 5850 — 5 — 100 30 5-20 1150 5830 — 5 — 100 30 5-21 1340 6280 — 5 — 100 30 5-22 2200 6160 — 2 — 100 30 5-23 1920 4570 — 4 — 100 30 5-24 1280 5840 — 5 — 100 30 5-25 2930 8170 — 7 — 100 30 5-26 1800 7620 — 3 — 100 30 5-27 2000 6380 — 5 — 100 30 5-28 1190 5140 12120 4 29 100 30 5-29 1360 8640 — 5 — 100 30 5-30 1150 9900 — 8 100 30 FUe No. D-4367-H02 January 8, 1990 TABLE IB (contmued) Seismic Traverses Seismic Traverse No. Velocity (ft/sec) V V V 1 2 3 Depth (ft) D D 1 2 Length of Traverse Approx. Max. Depth Explored rft^ +/- 5-31 1240 10020 4 100 30 5-32 1230 4490 7 100 30 5-33 2400 4810 15 100 30 5-34 1720 6770 4 100 30 5-35 1340 6160 4 100 30 5-36 1620 6640 6 100 30 V2 = V3 = Dl D, Velocity in feet per second of fkst layer of materials Second layer velocity Thkd layer velocity Depth in feet to base of fkst layer Depth to base of second layer. NOTE: For mass grading, materials with velocities of less than 4500 fps are generaUy rippable with a D9 CaterpUlar Tractor equipped with a single shank hydrauUc ripper. Velocities of 4500 to 5500 fps indicate marginal ripping and blasting. Velocities greater than 5500 fps generaUy requke pre-blasting. For trenching, materials with velocities less than 3800 fps are generaUy rippable depending upon the degree of fracturing and the presence or absence of boulders. Velocities between 3800 and 4300 fps generaUy indicate marginal ripping, and velocities greater than 4300 fps generaUy indicate nonrippable conditions. The above velocities are based on a Kohring 505. The reported velocities represent average velocities over the length of each traverse, and should not generaUy be used for subsurface interpretation greater than 100 feet from a traverse. APPENDIX B FUe No. D-4367-H02 January 8, 1990 APPENDIX B LABORATORY TESTING Laboratory tests were performed m accordance wkh general test methods of the American Society for Testmg and Materials (ASTM) or other suggested procedures. Selected relatively undisturbed drive and chunk samples were tested for thek in-place dry density, moisture content, dramed shear strength and residual shear strength, and consoUdation characteristics. The maximum dry density and optknum moisture content of selected bulk samples were determmed ki accordance wkh ASTM Test Procedure D1557-78. Portions of the buUc samples were then remolded to selected denskies and subjected to dkect shear and expansion tests. Abrasion resistance of buUc samples of potential quarry stone on the site were also determined m accordance with CaUfornia Test Procedure 211. The results of our laboratory tests are presented ki tabular and graphical forms heremafter. The ki-place density and moisture characteristics are presented on the logs of the exploratory borings and trenches. FUe No. D-4367-H02 January 8, 1990 TABLE I Summary of Laboratory Compaction Test Results ASTM D1557-78 Maximum Dry Optimum Sample Density Moisture No. Description pcf % Dry Wt. LB2-3 Orange-Brown-OUve mottled 119.6 13.7 very Clayey SAND (AUuvium) LB-2 Brown, Clayey GRAVEL 123.6 11.4 (LandsUde Debris) LB7-2 OUve-gray, Sandy CLAY 119.0 12.7 (Undocumented FUl) Tll-1 Reddish-Brown Clayey SAND 125.2 11.3 (TopsoU) T2M Dark Brown Sandy Clay 116.4 16.1 (Slopewash) T25-2 Brown, Clayey GRAVEL 125.4 11.6 (Terrace Deposit) SB4-5 Dark Brown SUty SAND 122.8 11.0 (AUuvium) FUe No. D-4367-H02 January 8, 1990 TABLE II Summary of Laboratorv Expansion Index Test Resuhs Moisture Content Sample No. Before Test % After Test % Dry Density pcf Expansion Index LB2-2 16.6 18.9 117.9 18 LB2-3 11.6 28.9 102.9 57 LB3-2 9.9 22.9 109.2 22 LB6-3 11.9 29.9 102.7 94 LB7-2 12.1 26.8 102.2 77 Tll-1 9.9 20.4 110.8 29 T21-1 11.4 31.8 104.6 132 FUe No. D-4367-H02 January 8, 1990 Sample No. TABLE III Summary of Dkect Shear Testing Results Dry Density pcf Moisture Content % Unk Cohesion psf Angle of Shear Resistance Degrees LB2-1 *LB2-3 LB5-1 LB6-2 *LB7-2 SB2-2 SB6-4 115.7 108.2 111.5 114.6 107.1 109.1 118.3 16.2 13.1 17.9 17.2 12.8 20.1 16.1 880 250 570 530 230 520 1000 20 24 24 34 24 34 29 '• Sample remolded to approximately 90% of maximum laboratory density at near optimum moisture content. FUe No. D-4367-H02 January 8, 1990 TABLE IV Summary of Residual Shear Testing Results Sample No. Dry Density pcf Moisture Content % Unk Cohesion psf Angle of Shear Resistance Degrees SB-4 100.8 26.1 440 TABLE V Summary of Los Angeles Abrasion Test Resuhs California 211 Sample No. LAR-1 LAR-2 % Wear After 100 Revolutions 19.0 5.2 % Wear After 500 Revolutions 53.2 18.4 File No. D-4367-H02 January 8, 1990 Z O < Q -I O CO z o o H- Z UJ o QC UJ Q. SAMPLE NO. SB 6-2 0.5 1.0 5.0 10.0 APPLIED PRESSURE (ksf) 100.0 INITIAL DRY DENSITY 99.8 (pcf) INITIAL WATER CONTENT 27,3 (%) INITIAL SATURATION 96.0 (%) SAMPLE SATURATED AT . 0.5 (ksO CONSOLIDATION CURVE RANCHO SANTA FE REALIGNMENT CARLSBAD, CALIFORNIA Figure B-l File No. D-4367-H02 January 8, 1990 SAMPLE NO. SB 5 - 2 z O I- < 9 o (0 z o o I-z UJ o cr m Q. 0.5 1.0 5.0 10.0 APPLIED PRESSURE (ksf) 50.0 100.0 INITIAL DRY DENSITY 110.8 (pcf) INITIAL WATER CONTENT 19.6 (%) INITIAL SATURATION 94.6 (%) SAMPLE SATURATED AT 0.5 (ksf) CONSOLIDATION CURVE RANCHO SANTA FE ROAD REALIGNMENT CARLSBAD, CALIFORNIA Figure B-2 File No. D-4367-H02 January 8, 1990 Z O H < 9 -J o CO z O O I-z UJ o oc UJ 0. SAMPLE NO. SB 2-1 0.5 1.0 5.0 10.0 APPLIED PRESSURE (ksf) 50.0 100.0 INITIAL DRY DENSITY 106.9 (pcf) INITIAL WATER CONTENT 8.7 (%) INITIAL SATURATION 45.6 (%) SAMPLE SATURATED AT 0.5 (ksf) CONSOLIDATION CURVE RANCHO SANTA FE ROAD REALIGNMENT CARLSBAD, CALIFORNIA Figure B-3 File No. D-4367-H02 January 8, 1990 SAMPLE NO. LB 2-2 z O I- < 9 _i o CO z o O H- Z Ui o cc UJ 0. 0.1 0.5 1.0 5.0 10.0 APPLIED PRESSURE (ksf) 50.0 100.0 INITIAL DRY DENSITY 117.9 (pcf) INITIAL WATER CONTENT 16.6 (%) INITIAL SATURATION 92.6 (%) SAMPLE SATURATED AT 0.5 (ksf) CONSOLIDATION CURVE RANCHO SANTA FE ROAD REALIGNMENT CARLSBAD, CALIFORNIA Figure B-4