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Home My WebLink AboutCT 98-14; Poinsettia Properties; Supplemental Exploratory Trenching 06037-32-04; 2001-03-16• 1 • 1 • i • 1 i * * m » m • A V • I I t I » i 1I •L I I i • I i I • 1 i i 4 * • • p • 9 m [ t b r * T cF ' j M. ^•, isrrTOiI V X /' J M *J ^ \ C EI ^_ V/A l' o ~> <\ * 4 B T -1 1C&P 0) >uI ! I A -|JK •^h ' ) T •> 11 r E \ C I E SUPPLEMENTAL EXPLORATORY TRENCHING POINSETTIA PROPERTIES CARLSBAD, CALIFORNIA PREPARED FOR STANDARD PACIFIC HOMES SAN DIEGO DIVISION CARLSBAD, CALIFORNIA MARCH 16, 2001 GEOCON INCORPORATED GEOTECHNICAL CONSULTANTS Project No. 06037-32-04 March 16, 2001 Standard Pacific Homes San Diego Division 5750 Fleet Street, Suite 200 Carlsbad, California 92008 Attention: Ms. Kathy Baker Subject: POINSETTIA PROPERTIES CARLSBAD, CALIFORNIA SUPPLEMENTAL EXPLORATORY TRENCHING Dear Ms. Baker: In accordance with your request, and our proposal LG-00063 dated November 29, 2000, we have performed supplemental exploratory trenches within the subject properties. The intent of the study was to further characterize the extent of undocumented fill embankments within the project limits for use in evaluating remedial grading costs. Several exploratory trenches were also performed in the northeast portion of the site where active agricultural operations precluded access during a prior geotechnical investigation. The base map used for this study is a modified version of the Tentative Tract Map transmitted electronically by RBF Consulting in January 2001. The information presented herein is a supplement to our report entitled Geotechnical Investigation, Poinsettia Agricultural Property, Carlsbad, California, Geocon Incorporated, September 2, 1998 (Project No. 06037-02-03). The scope of our services consisted of performing exploratory trenches in the vicinity of known undocumented fill embankments identified during the referenced study to evaluate the thickness and condition of the deposits. In addition, trenches were excavated along the top of slope on Lot Nos. 225 and 226 to identify the geologic conditions at the rear of lots. A total of 34 exploratory trenches (Trenches T38 through T71) were excavated on January 19, 22 and 23, 2001. A John Deer 510 rubber tire backhoe and a John Deere 450C trackhoe, both equipped with a 24-inch- wide bucket, were used to perform the exploratory trenching. The location of the trenches and modified geologic interpretation is shown on the Geologic Map, Figure 1 (map pocket). The approximate thickness of surficial materials requiring remedial grading is presented on Figure 1 adjacent to each trench excavation. The soil and geologic conditions encountered are presented on the 6960 Flanders Drive • San Diego, California 92121-2974 • Telephone (858) 558-6900 • Fax (858) 558-6159 trench logs Figures A-l through A-34, Appendix A. It should be noted that the trench logs presented in this report supplement the trench and boring logs in the referenced investigation; however, Figure 1 presented in this report supersedes the Geologic Map (Figure 2) of the referenced investigation. The materials encountered within the undocumented fill deposit were highly variable with respect to their moisture and density conditions and consisted of a mixture of silty to clayey sands and sandy clays. In general, the embankments are suitable for re-use as properly compacted fill provided they are placed in accordance with the recommendations in the referenced geotechnical investigation. The geologic conditions encountered in the vicinity of Lot Nos. 225 and 226 were found to consist of very dense Santiago Formation/Torrey Sandstone and minor fill (one foot or less) associated with the earth reinforced slope along Aviara Parkway. These conditions are not expected to impact the grading or proposed improvements on these lots. If you have any questions regarding this correspondence, or if we may be of further service, please contact the undersigned at your convenience. Very truly yours, GEOCON INCORPORATED Michael E. Embick GE2462 DBE:MEE:dmc (6/del) Addressee David B. Evans CEG 1860 Project No. 06037-32-04 -2-Marchl6,2001 C I I I I I I I I I I I I I I I I APPENDIX A TRENCH LOGS FOR POINSETTIA PROPERTIES CARLSBAD, CALIFORNIA PROJECT NO. 06037-32-04 PROJECT NO. 06037-32-04 DEPTH IN - 2 - - 4 - . SAMPLE NO. >-IDO_IOX l-l •1. / '/Ht: Mf:1 •* 5* •t J r. rvui-<c:zaz~io CD SOIL CLASS SM PT SM TRENCH T38 ELEV. (MSL.) 257 DATE COMPLETED 1/19/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL Silty, fine to medium SAND / _^ COLLUVIUM \ Stiff, moist, light brown, fine to medium Sandy / \ CLAY / SANTIAGO FORMATION/TORREY SANDSTONE — \ Very dense, humid to moist, off white, Silty, fine r \ to medium SANDSTONE / TRENCH TERMINATED AT 6 FEET No groundwater observed Backfilled 1-19-2001 o^^°yi- fe*t^w« m(JOO §UJ^ D- w - >- H~gu.yd a^Q ~ |0 o^~ x=oL) Figure A-l, Log of Trench T 38 PAP1 SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL (S ... DISTURBED OR BAG SAMPLE C... STANDARD PENETRATION TEST B .- - CHUNK SAMPLE ... DRIVE SAMPLE (UNDISTURBED) ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS HOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN FEET - 2 - — - A - SAMPLE NO. CDO OIh-H ~A r"I/I -j/ y^v/i-j/ii/i i/yl I./I .'/.'/- • •/•/ / 7$$/, •fcvt*» » J i t KUJ1- ^13az O tB SOIL CLASS (USCS) SM SM CL CL SM TRENCH T39 ELEV. (MSL.) 252 DATE COMPLETED 1/19/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL "• x Loose, dry, brown, Silty, fine to medium SAND f ^ Medium dense, humid to moist, light tan, Silty, fine to medium SAND with clay COLLUVIUM medium Sandy CLAY / \ SANTIAGO FORMATIONn'ORREY ,r — \x SANDSTONE /<— \\ Hard, moist, olive gray, Silty CLAYSTONE '/ \ Very dense, moist, light gray, Silty, fine to / \ medium SANDSTONE / TRENCH TERMINATED AT 7 FEET No groundwater observed Backfilled 1-19-2001 giu^• • ' \ i f-^L_ 1-23UI^O LU^CDQ,a-^' y^ goa^O Q \ | | * *o; j-^ EoL) Figure A-2, Log of Trench T 39 PAP1 SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL B ... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED) [3 ... DISTURBED OR BAG SAMPLE t ... CHUNK SAMPLE JE ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN - 2 - - 6 - o _0 SAMPLE NO. CDO OX H '•}•'•'- I \ '\ • - fit; t f:f h: M : |t! f: irLJ1-4J—%a oo: CD SOIL CLASS SM SM TRENCH T 40 ELEV. (MSL.) 260 DATE COMPLETED 1/19/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL Medium dense, humid to moist, mottled, brown, tan and light gray, Silly, fine to medium SAND, trace clay with trace claystone chunks to 4" SANTIAGO FORMATION/TORREY SANDSTONE Very dense, humid, light gray, Silty, fine to medium SANDSTONE TRENCH TERMINATED AT 9 FEET No groundwater observed Backfilled 1-19-2001 gtu^ *fe» LU *~*Q gS^Q_ -W - - - - - > \ 1 rf^\A * iu>t a Q 1 1 1 * ifV*gtHyega Figure A-3, Log of Trench T 40 PAP1 SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL D ... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED) H ... DISTURBED OR BAG SAMPLE E ... CHUNK SAMPLE I ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN - 4 - SAMPLE NO. >-CDO_J OXh-H -1:--"[rrr vt; t i .Nf ]•[• v i *r" ffLJ1-<T3QZ n ID SOIL CLASS SM SM TRENCH T 41 ELEV. (MSL.) 256 DATE COMPLETED 1/19/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL Loose, humid, light brown, Silty, fine to medium \ bAiNlJ / SANTIAGO FORMATION/TORREY SANDSTONE Very dense, humid, light gray, Silty, fine to medium SANDSTONE TRENCH TERMINATED AT 5 FEET No groundwater observed Backfilled 1-19-2001 o^-;y<->._: £«^£w« LU tf\ ^J LuWm 0- ^ > Lj^ Sgu. ^0n ofa * m;5a3H °z u Figure A-4, Log of Trench T 41 PAP1 SAMPLE SYMBOLS 0... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST H ... DISTURBED OR BAG SAMPLE E ... CHUNK SAMPLE ... DRIVE SAMPLE (UNDISTURBED) ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN FEET - 2 - - - 4 - - SAMPLE NO. >- O OX H -1 V -vA i/< /Tj/K -A'}\ ' Y^ VA \Ay.y- 7 '/ !il; t f: f :;: ITLU <T Oz oo:CD SOIL CLASS (USCS) SM CL SM TRENCH T 42 ELEV. (MSL.) 252 DATE COMPLETED 1/19/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL Loose to medium dense, moist, mottled light gray, tan and brown, Silty, fine to medium SAND with clay COLLUVIUM Stiff, moist, light olive brown, fine, Sandy CLAY SANTIAGO FORMATION/TORREY SANDSTONE Very dense, humid, light gray, Silty, fine to medium SANDSTONE TRENCH TERMINATED AT 8 FEET No groundwater encountered Backfilled 1-19-2001 Oo • j -^j £fcuj UJ^D \\ lii ^X1 1 1 ^r" f\\ Q_ "^ >_ 1 , \ «*^ 1 J * gjj LJ , V^a 1 1 1 *fy ^h- • I LiJ Ega Figure A-5, Log of Trench T 42 PAP1 SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL B ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED) H ... DISTURBED OR BAG SAMPLE E ... CHUNK SAMPLE I ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN - 2 - - 4 - - 6 - - 8 - - 10 - Iz 14 SAMPLE NO. / ' \ \\ '' - \ * > ** > C C2 h- / / / -/• / \ vA•\°~E fl . :: ii! ^j '/ / '*, / v/ / f1 :::: •* -^ //,/'. r > X I-[•[••. (YLU O Oo; SOIL CLASS SC/SM SM TRENCH T43 ELEV. (MSL.) 244 DATE COMPLETED 1/19/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL Loose to medium dense (increasing density with depth), moist to very moist, Clayey, fine to medium SAND with silt -Note: contact varies from 12 feet deep at 10 feet from top of slope to 2 feet deep at 35 feet from top of slope SANTIAGO FORMATION/TORREY SANDSTONE medium SANDSTONE / TRENCH TERMINATED AT 14 FEET No groundwater observed Backfilled 1-19-2001 z, ,^!|£ UjhHo *-• 1 1 1 *jJ1 1 1 J?f nl Q_lr--' - - >_ f- " • o:^a ^ u* -Di- Hii; ega Figure A-6, Log of Trench T 43 PAP1 SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL 13 ... DISTURBED OR BAG SAMPLE C... STANDARD PENETRATION TEST B ... CHUNK SAMPLE ... DRIVE SAMPLE (UNDISTURBED) ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN FEET - 2 - - 4 - - 6 - - 8 - — - 10 - _ - 14 - lo SAMPLE NO. CDO_J OX1-H •I-/- I-L 1 1 . "'I' •"• :jl. TJ-^\/-/-/ -/ ://yjvj; '/TXJ/ 7\/$. f*?: tv.[» [$:[ : fl::l:[.VL* [•!)'>! orLJi-<r az13O CD SOIL CLASS (USCS) SM CL SC/SM SM TRENCH T44 ELEV. (MSL.) 242 DATE COMPLETED 1/19/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL Loose, dry, mottled brown, tan and gray, Silty, fine to medium SAND ~X -Distinct contact /~ COLLUVIUM Stiff to very stiff, moist, brown, Clayey, fine Sandy CLAY Dense, moist, gray brown, Clayey, fine to medium SAND, decreasing clay content, increasing silt content with depth TERRACE DEPOSIT Very dense, moist, orange with gray mottling, Silty, fine to medium SANDSTONE SANTIAGO FORMATIONATORREY \ SANDSTONE / \ Very dense, humid, light gray, Silty, fine to / \ medium SANDSTONE / TRENCH TERMINATED AT 17 FEET No groundwater observed Backfilled 1-19-2001 Siu^y (_) -L_! ^ ! Z0)° - - ~ _ ~ LJ~ 111. I ^•^ Q LUGo:w H h^ ^oo Figure A-7, Log of Trench T 44 PAP1 SAMPLE SYMBOLS ... SAMPLING UNSUCCESSFUL E ... STANDARD PENETRATION TEST I ... DRIVE SAMPLE (UNDISTURBED) ... DISTURBED OR BAG SAMPLE E ... CHUNK SAMPLE I ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN - 2 - - 4 - - 6 - 0 - - 10 - - 12 -_ SAMPLE NO. T45-1 T45-2 T45-3 T45-4 T4S S 1 1 -\ ] - S sy•A, /-*:,* > r cnhh - ' - "•• - ' v '/^/ I/>f: • )1) 1J -I- - f- /v • % /SS *'L IYUJ <T~7 Q —\nccCD SOIL CLASS SM SM CL CH SM TRENCH T 45 ELEV. (MSL.) 244 DATE COMPLETED 1/22/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL Loose, moist, mottled, light tan and brown, Silty, fine to medium SAND TOPSOIL Loose, dry, light brown, Silty, fine to medium \ SAND / COLLUVIUM Stiff, moist, brown, fine Sandy CLAY with silt SANTIAGO FORMATION/TORREY SANDSTONF 11 Stiff, moist, olive gray, Silty, highly weathered / \ CLAYSTONE with shiny parting surfaces / \ Very dense, humid, light gray, Silty, fine to / \ medium SANDSTONE / TRENCH TERMINATED AT 14 FEET No groundwater observed Backfilled 1-19-2001 ZQJ^ i^s [~I|— |Q gj&Jffl£j_o:^, - ^_i—' ' • i?£^ > a^o uj-5a^ HL^igo Figure A-8, Log of Trench T 45 PAP1 SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL H ... DISTURBED OR BAG SAMPLE C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED) B ... CHUNK SAMPLE I ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOW HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN FEET - 2 - - 4 - - 6 - SAMPLE NO. >- O OI H -1 .1 '.I. 1 f::;t: H'tIT f! [']* f f$[: rrLJ <T az nczID SOIL CLASS SM SM TRENCH T 46 ELEV. (MSL.) 229 DATE COMPLETED 1/22/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL \, Loose, moist, brown, Silty, fine to medium SAND / SANTIAGO FORMATION/TORREY SANDSTONE Very dense, humid, light gray, Silty, fine to medium SANDSTONE -Note: Trench extended 5 feet up slope and exposed 1 ,5 feet of colluvium. Similar materials to trench T-45 TRENCH TERMINATED AT 8 FEET No groundwater observed Backfilled 1-19-2001 °u * ilSujHo tt F * 1 i?t1 1 1 ^?* rri Q_ ^ >_ I! i ^\ gLU £u a:1^n ^ ^1 1 1 r * CK L Eg CJ Figure A-9, Log of Trench T 46 PAP1 SAMPLE SYMBOLS C! ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE ... DRIVE SAMPLE (UNDISTURBED) . . . HATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN - 2 - - 4 - - 6 - - 8 - - 10 - 12 - 14 - - 16 - - 18 - SAMPLE NO. T47-1 T47-2 CDO OX H :-i./- ]-L-i -- "-1 V-. I- l,"j T_ . '•I-/'- i -L -\ •- " 1 •i. i - 1-1"i T_ .- 1 i- 1 'IV/-v/ '//*' %\ •"-> - J-L "l 1 " 1 o:LUt-<T O ~1 O CD SOIL CLASS (USCS) SM SC/CL SM TRENCH T 47 ELEV. (MSL.) 223 DATE COMPLETED 1/22/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL Loose to medium dense (increasing density with depth), moist, mottled light tan, orangish brown and light-gray, Silty, fine to medium SAND with varying clay amounts -Dark gray at 10 feet COLLUVIUM Dense, stiff, moist to very moist, tan brown, Clayey, fine to medium SAND and Sandy CLAY Dense, very moist, olive gray, Silty, fine to medium SAND TRENCH TERMINATED AT 19 FEET (Maximum reach of backhoe) No groundwater observed Backfilled 1-19-2001 oW" <E^x ^ I— l -*1 1 1 ' ' r^= coR Q, ^ - — — > ! i ^%g^ Q • a^a Q IN * *o: o^Eoo Figure A-10, Log of Trench T 47 PAP1 SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL B ... STANDARD PENETRATION TEST ES ... DISTURBED OR BAG SAMPLE & ... CHUNK SAMPLE ... DRIVE SAMPLE <UNDISTURBED) ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN FEET - 2 - - 4 - - 6 - Q „O - 10 - 12 - 14 - SAMPLE NO.LITHOLOGY:}- ;i\ -'"1 'GROUNDUATER |SOIL CLASS (USCS) SM VIH/CL SM SM TRENCH T48 ELEV. (MSL.) 227 DATE COMPLETED 1/22/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL Loose, moist, mottled tan, brown and gray, Silty, fine to medium SAND TOPSOIL plastic SILT, with abundant roots, organic odor / contact with formational dipping to the west / TERRACE DEPOSITS Medium dense to dense, moist, orange mottled with gray and yellow, Silty, fine to medium SAND -Pockets of well rounded gravel and fine cobble between 6 and 9 feet SANTIAGO FORMATION/TORREY SANDSTONE Very dense, humid, light gray, Silty, fine to medium SANDSTONE \ -Note: Contact between terrace deposit and j~ Santiago formation dipping steeply west at toe of / slope from 5 feet to 12 feet, then rising to contact / with topsoil approximately 15 feet from toe / TRENCH TERMINATED AT 15 FEET No groundwater observed Backfilled 1-19-2001 PENETRATIONRESISTANCE(BLOUS/FT.)- - - h-^_ mul Q /-^ o Figure A-ll, Log of Trench T 48 PAP1 SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL B ... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED) H ... DISTURBED OR BAG SAMPLE G ... CHUNK SAMPLE 3C ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN FEET - 2 - - - 4 - - 6 - - 10 - - 12 - - 14 - - 16 - - - 10 - SAMPLE NO. T49-1 T49-2 T49-3 >LITHOLO:-]-'-•-l\•\\".-!..-- .!}•,1- '•-- T. ' -1 • -f? '•}•'•- V ;'l V - .I ' ' '-!" '"i i -,.,.,.; r. i•i ••;-]•!- a:LU GROUNDWASOIL CLASS (USCS) SM SM TRENCH T49 ELEV. (MSL.) 224 DATE COMPLETED 1/19/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL Loose, moist, mottled brown and light gray, Silty, fine to medium SAND -Becomes medium dense at 4 feet -Pieces of wood at 12 feet COLLUVIUM Dense, moist, dark gray, Silty, fine to medium SAND, trace clay -Becomes mottled with orange at 17.5 feet TRENCH TERMINATED AT 18 FEET (Maximum reach of backhoe) No groundwater observed Backfilled 1-19-2001 ENETRATK?ESISTANCBLOWS/FTQ_"-^ ~ — - - - _ - >- H~ gu. 8«>s?OLa f*.MOISTUREONTENT 0CJ Figure A-12, Log of Trench T 49 PAP1 SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL E ... STANDARD PENETRATION TEST H ... DISTURBED OR BAG SAMPLE £ ... CHUNK SAMPLE ... DRIVE SAMPLE (UNDISTURBED) ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN - 2 - SAMPLE NO. >-CDO_J OX H -1 M.|-~- F £ Nv J r. irLJi-<E3a oa: SOIL CLASS SM SM TRENCH T 50 ELEV. (MSL.) 225 DATE COMPLETED 1/19/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION TOPSOIL \ Loose, moist, brown, Silty, fine to medium SAND / SANTIAGO FORMATION/TORREY SANDSTONE Very dense, humid, light gray, Silty, fine to medium SANDSTONF TRENCH TERMINATED AT 4 FEET No groundwater observed Backfilled 1-19-2001 0^H^K1-glL.<E£\£w« gffi^ D-"-1^ _ >- 1^^ . o:^Q ^ o:1^ t-tiZ igu Figure A-13, Log of Trench T 50 PAP1 SAMPLE SYMBOLS HI... SAMPLING UNSUCCESSFUL Si ... DISTURBED OR BAG SAMPLE B . . . STANDARD PENETRATION TEST & ... CHUNK SAMPLE ... DRIVE SAMPLE (UNDISTURBED) ... UATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN - 2 - - 6 - - 8 - - 1U SAMPLE NO. >(,C C3hh - 1 -•1- ]"- \ •-i M-" A .'I- t- "I ' < » *t* t )3J) HJ . ,rt. i.r.*:.•* : :• :t; r* rvLU 1-<E3az-ina: CD SOIL CLASS (USCS) SM SM SM TRENCH T 51 ELEV. (MSL.) 206 DATE COMPLETED 1/19/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL Medium dense, moist, yellowish brown, Silty, fine to medium SAND COLLUVIUM Loose, humid, gray brown, Silty, fine to medium SAND SANTIAGO FORMATION/TORREY SANDSTONE Very dense, moist, brownish gray, Silty, fine to medium SANDSTONE TRENCH TERMINATED AT 10 FEET No groundwater observed Backfilled 1-19-2001 oW"°yh-h-jFU.<n5E\ £«§ §LUm0.°^ >• H~ go. ^d a^a <^o;w gtHy ^0u Figure A-14, Log of Trench T 51 PAP1 SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED) ii ... DISTURBED OR BAG SAMPLE E ... CHUNK SAMPLE I ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN - 2 - - 6 - - 8 - ~ - 10 - SAMPLE NO. T52-1 T52-2 THOLOGYH J^X-J( y ijli!'f : jlii IV JNDWATEo CD SOIL CLASS (USCS) SM SM TRENCH T 52 ELEV. (MSL.) 196 DATE COMPLETED 1/19/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL Medium dense, moist, gray brown, Silty, fine to medium SAND with clay TERRACE DEPOSIT Dense to very dense, moist, reddish brown, Silty, fine to medium SANDSTONE TRENCH TERMINATED AT 12 FEET No groundwater observed Backfilled 1-19-2001 •RATIONSTANCEIS/FT.)LUJJO LU^CO - - - ~" - > Q • j£~ a g8 13 H H^Eg U Figure A-15, Log of Trench T 52 PAP1 SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED) £! ... DISTURBED OR BAG SAMPLE kJ ... CHUNK SAMPLE I ... UATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN - 4 - _ - 6 - o _0 SAMPLE NO. >-CDO_lOI H -1 -;1-.-/ ]-, '\/ \/4A ft; t f:r rf •1 fit; r>-LUi-<ETaz oo:CD SOIL CLASS SM CL SM TRENCH T 53 ELEV. (MSL.) 195 DATE COMPLETED 1/19/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION TOPSOIL Loose, very moist, light tan, Silty, fine to medium SAND Firm, wet, light tan, fine Sandy CLAY with silt TERRACE DEPOSIT Very dense, moist, reddish brown, Silty, fine to medium SANDSTONE TRENCH TERMINATED AT 9 FEET No groundwater observed Backfilled 1-19-2001 o11^H^h- ££\£««[TI-IQ gffi^ Q.^^ >; H^ gj ^ t tt^Q ^ o:w *~z Hiif Eg CJ Figure A-16, Log of Trench T 53 PAP1 SAMPLE SYMBOLS O ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED) li ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE Jf. ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN FEET - 2 - ~ - 4 - SAMPLE NO. >CD O _lOX H_1 '/• V/ t 1, I* f: ft: ijf: irLUH <E 3az Oo:CD SOIL CLASS SC SM TRENCH T 54 ELEV. (MSL.) 187 DATE COMPLETED 1/19/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION ~\ UNDOCUMENTED FILL j~ \ Loose, wet, mottled brown and tan, Clayey, fine to / \ medium SAND / TERRACE DEPOSIT Very dense, moist, reddish brown, Silty, fine to medium SANDSTONE TRENCH TERMINATED AT 5 FEET No groundwater observed Backfilled 1-19-2001 o^O°yi-»-ffiU.<E£\£w^ UJH0 *^ 1 1 1 ^J1 1 1 jf^ rri Q_ "^ >- a2z . " • a^a ^ ^K H UJL_ Eg U Figure A-17, Log of Trench T 54 PAP1 SAMPLE SYMBOLS EH... SAMPLING UNSUCCESSFUL B ... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED) Bi ... DISTURBED OR BAG SAMPLE C ... CHUNK SAMPLE I ... UATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN FEET - 2 - - 4 - - - 6 - SAMPLE NO. >CDO_J OX H A./- i "4 •"-ft;f: C ' f. rr UJi-<E3Oz o CD SOIL CLASS (USCS) SM SM SM TRENCH T 55 ELEV. (MSL.) 186 DATE COMPLETED 1/19/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION ARTIFICIAL FILL \ Loose, moist, brown, Silty, fine to medium SAND / Medium dense to dense, moist, mottled, grayish brown and orange, Silty, fine to medium SAND TERRACE DEPOSIT Very dense, reddish brown, mottled with gray, Silty, fine to medium SANDSTONE TRENCH TERMINATED AT 7 FEET No groundwater observed Backfilled 1-19-2001 ow^Hy»- •-ffU-<c \£w"r~iH??•*• rn *— * ^LU^Q- w - >• H- &yd a ^ a:^ Huif ) ' Eg L) Figure A-18, Log of Trench T 55 PAP1 SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL 8S ... DISTURBED OR BAG SAMPLE C... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED) C ... CHUNK SAMPLE I ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN FEET - 2 - - 4 - - 8 -_ - 10 - SAMPLE NO. > O_J OX1-H ~" j\-/\'/\. '$. ll ,1-r- .\ -•- •]Y '\ - \-[ - :\- ' ' \- txLU <TTaz O CD SOIL CLASS (USCS) SM/SC SM SM TRENCH T56 ELEV. (MSL.) 185 DATE COMPLETED 1/19/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL Medium dense, moist, brown, Silty and Clayey, fine to medium SAND ~X -2-inch thick lens of asphalt at 5.8 feet /~ — TOPSOIL ,- \ Loose to medium dense, moist, tan, Silty, fine to / \ medium SAND / TERRACE DEPOSIT Medium dense to dense, very moist, gray, mottled with red staining, Silty, fine to medium SAND with claystone lenses TRENCH TERMINATED AT 1 1 FEET No groundwater observed Backfilled 1-19-2001 t^str SLUJQ Q_°-^ — >_ rA * Luj a~Q ^ o; Eou Figure A-19, Log of Trench T 56 PAP1 SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL 13 ... DISTURBED OR BAG SAMPLE D ... STANDARD PENETRATION TEST t ... CHUNK SAMPLE ... DRIVE SAMPLE (UNDISTURBED) ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN - 2 - - 4 - SAMPLE NO. CD O X H -1 '/' '/'/ r / / '1- 1-1-r-ift[•• -t' i|] :[: M VJ*3 .r. irLU <T a2— ) Oa:CD SOIL CLASS SO 5M-GM SM TRENCH T 57 ELEV. (MSL.) 209 DATE COMPLETED 1/22/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL/DISTURBED ~\ TERRACE DEPOSIT j~ \ Loose, moist, brownish tan, Clayey, fine to / \ medium SAND / ~\ TERRACE DEPOSIT i~ \ Dense, moist, mottled orange and gray, Silty, fine / \ to medium SAND and well rounded gravel / SANTIAGO FORMATION/TORREY Q A NTmrOWPii J/V11(1-/O J. V-'l^ JLJ i \ Very dense, hard, light gray, Silty, fine to medium / \ SANDSTONE / TRENCH TERMINATED AT 6 FEET No groundwater observed Backfilled 1-22-2001 giu^ ii ^ ^ i!_ J !** j «fe» UJ^Q Lu"m Q_ ^ >- ! »S*<.m * 5j^ . ccw a ^ 1 1 1 *^a: H^ H^ ^0CJ Figure A-20, Log of Trench T 57 PAP1 SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL H ... DISTURBED OR BAG SAMPLE E ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED) E ... CHUNK SAMPLE X ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES OMLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN - 2 - - 4 - - 8 - SAMPLE NO. >- OX H -•1-J-"' [i [i £ 3 [*>i t* Ejt; 1 M: tjf:ft; t (:Pt: IT UJ <T O r> ID SOIL CLASS SM SM SM TRENCH T58 ELEV. (MSL.) 207 DATE COMPLETED 1/22/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL ~~\ Loose, moist, reddish brown, Silty, fine to medium / \ SAND / TERRACE DEPOSIT Dense, moist, reddish brown, mottled with clay, Silty, fine to medium SANDSTONE SANTIAGO FORMATION/TORREY SANDSTONE Very dense, moist, gray with red staining, Silty, fine to medium SANDSTONE TRENCH TERMINATED AT 9 FEET No groundwater observed Backfilled 1-22-2001 oW * £^iT iTi '"'o1^ (ft "^ LukHcoQ- ^ ;,_ ' ' t gjj ^ . O ^%>1 1 1 r irv* ^H[£nz:ga Figure A-21, Log of Trench T 58 PAP1 SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL B... STANDARD PENETRATION TEST H ... DISTURBED OR BAG SAMPLE & ... CHUNK SAMPLE ... DRIVE SAMPLE (UNDISTURBED) ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN - 2 - - - 4 - SAMPLE NO. >-IDO_lOXI— H -1 •i " 1 " •."I- J •- 1 i- "1 'i '-'i • ' :• t; % 1 \'r 4 * irUJh-/r3QZ — >Oct; CD SOIL CLASS (USCS) SM SM SM TRENCH T 59 ELEV. (MSL.) 196 DATE COMPLETED 1/22/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL x Loose, moist, brown, Silty, fine to medium sAND / Medium dense, moist, mottled brown, light tan and light gray, Silty, fine to medium SAND with clay TERRACE DEPOSIT Very dense, moist, reddish brown, mottled with prav Siltv fine m medium SANDSTONF ,— TRENCH TERMINATED AT 8 FEET No groundwater observed Backfilled 1-22-2001 5«" c^t£«£2r-(_l5 tt ^ * ^ ^A1 1 1 ^?r rft Q_ ^ t- gLu HU %&a O 0:^ Hufego Figure A-22, Log of Trench T 59 PAP1 SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL B ... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED) II ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE I ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN FEET - 2 - - - 4 - SAMPLE NO. >CJQO_JOX H -1 ••!•]•"• F * t* f ' t* fit!tjf: irLJt-<c^az nccCD SOIL CLASS (USCS) SM SM TRENCH T 60 ELEV. (MSL.) 202 DATE COMPLETED 1/22/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL ~\ Loose, moist, brown, Silty, fine to medium SAND /~ TERRACE DEPOSIT Very dense, humid to moist, reddish brown, mottled with gray, Silty, fine to medium SANDSTONE TRENCH TERMINATED AT 5 FEET No groundwater observed Backfilled 1-22-2001 0^~SyH"-JFU-<cE\£w£$ UJHOgffi^ Q_ ^ - - - > Iji " • &~o ~ tt^ Hii!Eg CJ Figure A-23, Log of Trench T 60 PAP1 SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL D ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED) H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE I ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN FEET - 2 - - 4 - - 6 - 0 - 12 - 14 -1 SAMPLE NO. >- O OX H ^ A y~y •(A/-''%-w K ,'l/T/j-' / r1/ /\/'A' '$$. -•jCr/ tyt •AvsM (j t: t f: I hfi-r rvUJ ^-ya o CD SOIL CLASS SM/SC SM TRENCH T 61 ELEV. (MSL.) 203 DATE COMPLETED 1/22/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION ARTIFICIAL FILL Medium dense to dense, moist, mottled brown and tan, Silty, fine to medium SAND and Clayey, fine to medium SAND intermixed lenses -Mottled with gray at 10 feet TERRACE DEPOSIT Very dense, moist, reddish brown, mottled with gray, Silty, fine to medium SANDSTONE TRENCH TERMINATED AT 15 FEET No groundwater observed Backfilled 1-22-2001 GO * • r 1 S^CO UJHo S^m Q.^--- >_ i—^ tn * 5jQ • £w Q ^^LJ^ry & HH Eou Figure A-24, Log of Trench T 61 PAP1 SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL El... STANDARD PENETRATION TEST H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE ... DRIVE SAMPLE (UNDISTURBED) ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN U _ - 2 - - 4 - " ~ g - - 8 - - in - - 12 - - 16 - 10 SAMPLE NO. CDO OI H .4 ••• T ' ^"/K "ft'-K T> yf• 1/f -i/y- ',-/ i:fcn •:'•]'/ •k . "t1-- :H - !• -Kh rr UJh- ^pTOz nQLCD SOIL CLASS (USCS) SM SM SC SM SP-SM SM TRENCH T 62 ELEV. (MSL.) 197 DATE COMPLETED 1/22/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION ARTIFICIAL FILL Loose, very moist to wet, brown, Silty, fine to ^ v medium SAND, trace clay / / Dense, moist, strong brown, Silty, fine to medium SAND with clay Dense, moist to very moist, dark gray, Clayey, fine to medium SAND Medium dense to dense, very moist, gray, Silty, fine to medium SAND Medium dense, very moist, gray, fine SAND with silt TFRRACF DFPOS1T ^- Dense, moist, reddish brown, Silty, fine to medium / SANDSTONE / TRENCH TERMINATED AT 18 FEET No groundwater observed Backfilled 1-22-2001 oLU~^^ C_j , !_I *(5 1 «fe"ii H ?i LuLUffl Q-Q=^ ~ - > ! |^\L J * Lujj^ • >i a Q | | | *^a: fezH£05 u Figure A-25, Log of Trench T 62 PAP1 SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL D ...STANDARD PENETRATION TEST ... DISTURBED OR BAG SAMPLE E ... CHUNK SAMPLE ... DRIVE SAMPLE (UNDISTURBED) ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN FEET - 2 - - 4 - - - 6 - - - 8 - - 12 - - 14 - SAMPLE NO. CDO OX H --!-/- I-L :!L- /^/y vi -i/ •V-" " h J - -"1 h4?'A /( H, y>/\-~A b/[/>H "^ - / *.[••*!>! irLJh-<rTaz a CD SOIL CLASS (USCS) SM SM/SC SM SM/SC SM TRENCH T 63 ELEV. (MSL.) 204 DATE COMPLETED 1/22/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION ARTIFICIAL FILL Loose to medium dense, humid, light tannish gray, Silty, fine to medium SAND Dense, humid to moist, mottled tan to brown, Silty, fine to medium SAND with clay Loose to medium dense, humid to moist, strong brown, Silty, fine to medium SAND Dense, moist, brown, Silty, fine to medium SAND with clay — , TFRRACE DEPOSIT ,- \ Dense, humid to moist, reddish brown, Silty, fine / \ to medium SANDSTONE / TRENCH TERMINATED AT 15 FEET No groundwater observed Backfilled 1-22-2001 o1^ LJ ^ ! S^coio>3 Q_"-^ _ - - - UJ^ Hu cc^a ^N 1 1 1 ff CO^ 0^~^ou Figure A-26, Log of Trench T 63 PAP1 SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C . . . STANDARD PENETRATION TEST H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE ... DRIVE SAMPLE (UNDISTURBED) ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN FEET - 2 - - 4 - - 6 - - 10 - - 12 - - 14 - - 16 - - 18 - SAMPLE NO.LITHOLOGY"1/1 -i//i" i/i 'X-J(- "L/I. i/ V^K A"i/i i/^y*i/i j//i t/[I$ "j/r>^y*iX Jx/I J/f 'J/T -y ')r-y7\ j/f-0-|/GROUNDNATER |SOIL CLASS (USCS) SM TRENCH T64 ELEV. (MSL.) 218 DATE COMPLETED 1/22/01 EQUIPMENT JD 510D BACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL Loose to medium dense, moist, mottled brown and gray, Silty, fine to medium SAND with varying clay content -Buried concrete block at 12 feet TRENCH TERMINATED AT 18.5 FEET (Maximum reach of backhoe) No groundwater observed Backfilled 1-22-2001 ENETRATIONRESISTANCEBLOWS/FT. )n_"-^RY DENSITY(P.C.F.)Q MOISTUREONTENT (*>(j Figure A-27, Log of Trench T 64 PAP1 SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED) H ... DISTURBED OR BAG SAMPLE H ... CHUNK SAMPLE I ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN FEET - 2 - SAMPLE NO. ^LITHOLOG-:1--"!" I-L -]J" ~7 :t /-/ ; ::f:j:?l LU GROUNDWATSOIL CLASS (USCS) SM CL SM TRENCH T65 ELEV. (MSL.) 220 DATE COMPLETED 1/23/01 EQUIPMENT JD 450C TRACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL Loose, humid, mottled tan and gray, Silty, fine to medium SAND COLLUVIUM Very stiff, moist, tan, fine Sandy CLAY with silt SANTIAGO FORMATION/TORREY ~\ SANDSTONE F \ Very dense, humid, light gray, mottled with orange / \ staining, Silty, fine SANDSTONE / TRENCH TERMINATED AT 6 FEET No groundwater observed Backfilled 1-22-2001 ENETRATIOSESISTANCEBLOWS/FT.0- w >- *~^\|u: go a MOISTUREONTENT (Xo Figure A-28, Log of Trench T 65 PAP1 SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C . . . STANDARD PENETRATION TEST H ... DISTURBED OR BAG SAMPLE S3 ... CHUNK SAMPLE ... DRIVE SAMPLE (UNDISTURBED) ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN FEET — - 2 - _ - 4 - - 6 - - 10 ~ - 19 - - 14 - \f\ - lo SAMPLE NO. CD H ~" .-]. ' -• - '}• ' -V- i/i -y '$!>?</"X-,// £/^ A'\-' - J- -;i-.|-;- - 1 - - .-1- ••- ;[t. - ctUJh-<r O CD SI SOIL CLASS (USCS) SM SM SM SC/CL >-SM/SlV SM SM TRENCH T66 ELEV. (MSL.) 219 DATE COMPLETED 1/23/01 EQUIPMENT JD 450C TRACKHOE MATERIAL DESCRIPTION ARTIFICIAL FILL Loose, dry, off white, Silty, fine SAND Medium dense, dry, light brown, Silty, fine to medium SAND r Dense, moist, brown, Silty, fine to medium SAND with clay Dense and very stiff, moist, gray brown, Clayey, fine to medium SAND and fine to medium Sandy CLAY Dense, moist, strong brown, fine to medium SAND with silt/Silty SAND Very dense, moist, dark brown, Silty, fine to medium SAND, trace clay Dense, moist, dark gray, Silty, fine SAND, trace organic odor TRENCH TERMINATED AT 18 FEET (Maximum reach of trackhoe) No groundwater observed Backfilled 1-23-2001 5B~£zt DSJJCO LJJJJO jfJLLjj^Q_ W - > 11^^ HJJ ° • a^"Q <51 1 1 , ,fV' ') . to2 o1"Eoo Figure A-29, Log of Trench T 66 PAP1 SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST •... DRIVE SAMPLE (UNDISTURBED) Bi ... DISTURBED OR BAG SAMPLE E ... CHUNK SAMPLE I ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN FEET - 4 - - 6 - - 10 -1 12 - 14 - - 16 - SAMPLE NO. ID O OX H /i-.-;- \-L -, -I , H - .I-,- ' 7A/'%,yi/r M 3$ //•>; s~/~/ -; /•/ ~/- / - /' / / '- /-/ '-//?:/ // '-/*,: (TLU 1- ~ra o CD SOIL CLASS SM SM SM/SC SC sc TRENCH T 67 ELEV. (MSL.) 212 DATE COMPLETED 1/23/01 EQUIPMENT JD 450C TRACKHOE MATERIAL DESCRIPTION ARTIFICIAL FILL Medium dense, dry, off white, Silty, fine to Medium dense, dry, light brown, Silty, fine to \ medium SAND ' Very dense, moist, brown, Silty, fine to medium SAND with clay and Clayey, fine to medium SAND Dense, moist, gray, Clayey, fine to medium SAND Dense, very moist, strong brown, Clayey, fine to medium SAND -Trace chunks of asphalt and concrete to 6 inches at 14.5 feet TRENCH TERMINATED AT 17 FEET (Maximum reach of trackhoe) No groundwater observed Backfilled 1-23-2001 §S~i _! T-T ! K£CO LUy^O Luiriia0- ^ - f^ ' ' • SjD * j£^a ^\ a:^ H£ L) Figure A-30, Log of Trench T 67 PAP1 SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL C ... STANDARD PENETRATION TEST H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE ... DRIVE SAMPLE (UNDISTURBED) ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN FEET - 2 - SAMPLE HO.LITHOLOGYOfiOt/ %vv AA/y '$$/yyy *,f.1.*L* V'j'rWAV GROUNDWATERSOIL CLASS CUSCS) CL SM TRENCH T68 ELEV. (MSL.) 194 DATE COMPLETED 1/23/01 EQUIPMENT JD 450C TRACKHOE MATERIAL DESCRIPTION ARTIFICIAL FILL Very stiff, moist, brown, Silty CLAY with fine sand TERRACE DEPOSIT medium SANDSTONE / TRENCH TERMINATED AT 5.5 FEET No groundwater observed Backfilled 1-23-2001 ENETRATIONiESISTANCEBLOWS/FT. )CL"-^RY DENSITYCP.C.F.)a MOISTUREONTENT (X)o •tt Figure A-31, Log of Trench T 68 PAP1 SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL H ... DISTURBED OR BAG SAMPLE C ... STANDARD PENETRATION TEST • ... DRIVE SAMPLE (UNDISTURBED) B ... CHUNK SAMPLE I ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO, 06037-32-04 DEPTH IN FEET 9 - SAMPLE NO.LITHOL06Y?/^ H'i-'K•!•!•!!*.•GROUNDNATER |SOIL CLASS (USCS) sc SM TRENCH T69 ELEV. (MSL.) 307 DATE COMPLETED 1/23/01 EQUIPMENT JD 450C TRACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL ~A Very dense, moist, gray, Clayey, fine to medium f~ \ SAND / \ SANTIAGO FORMATION/TORREY / 1 SANDSTONE 1 Very dense, humid, yellowish gray, Silty, fine to / 1 medium SANDSTONE, very difficult to excavate / \ moderately to highly cemented / TRENCH TERMINATED AT 2 FEET No groundwater observed Backfilled 1-23-2001 ENETRATIONcESISTANCEBLOWS/FT.)Q- "" 1—^ a MOISTUREONTENT <.y.~>o Figure A-32, Log of Trench T 69 PAPl SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL E . . . STANDARD PENETRATION TEST H ... DISTURBED OR BAG SAMPLE E ... CHUNK SAMPLE ... DRIVE SAMPLE (UNDISTURBED) ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN FEET SAMPLE NO. >-LITHOLOG7- '/-/' / / &•%} *'i '/' 111 GROUNDWA1SOIL CLASS CUSCS) sr SM TRENCH T70 ELEV. (MSL.) 307 DATE COMPLETED 1/23/01 EQUIPMENT JD 450C TRACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL ~~\ Very dense, moist, brown, Clayey, fine to medium j~ __ , \ SAND /,-—l \ Ort-JNL/ / !— \ SANTIAGO FORMATION/TORREY / \ SANDSTONE / 1 Very dense, humid, yellowish gray, Silly, fine to / 1 medium SANDSTONE with clay, very difficult to 1 \ excavate, moderately to highly cemented / TRENCH TERMINATED AT 2 FEET No groundwater observed Backfilled 1-23-2001 ENETRATIOiESISTANCEBLOWS/FT.^ **• \^ •^ lu a ^MOISTUREONTENT (*a Figure A-33, Log of Trench T 70 PAP1 SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL D ... STANDARD PENETRATION TEST H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE ... DRIVE SAMPLE (UNDISTURBED) ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. PROJECT NO. 06037-32-04 DEPTH IN FEET SAMPLE NO. T71-1 ._LITHOLOG--1-J" **t K.*t*3 . • ceLU GROUNDUA7SOIL CLASS (USCS) SM SM TRENCH T71 ELEV. (MSL.) 307 DATE COMPLETED 1/23/01 EQUIPMENT JD 450C TRACKHOE MATERIAL DESCRIPTION UNDOCUMENTED FILL ~~\ Loose, brown, moist, Silty, fine to medium SAND /~ SANTIAGO FORMATTON/TORRFY ^ \ SANDSTONE / \ Very dense, humid, yellowish gray, Silty, fine to / \ medium SANDSTONE with clay, very difficult to / \ excavate, moderately to highly cemented / TRENCH TERMINATED AT 2 FEET No groundwater observed Backfilled 1-23-2001 ENETRATIOiESISTANCEBLOWS/FT.^ f- Q^Q MOISTUREONTENT (Xo Figure A-34, Log of Trench T 71 PAP1 SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL D ... STANDARD PENETRATION TEST H ... DISTURBED OR BAG SAMPLE B ... CHUNK SAMPLE I ... DRIVE SAMPLE (UNDISTURBED) Z ... WATER TABLE OR SEEPAGE NOTE: THE LOG OF SUBSURFACE CONDITIONS SHOUN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.