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SOIL BORING LOG Boring No. IW-4 Sheet: 3 of 3 Client Knowles Property Date April 10,2012 Address 7835 Thornton Rd. Drilling Co. All Well Abandonment Rig Type: LAR Stockton,CA Driller Rob Project No 2129-1140-01 Method Hollow-Stem Auger Hole Diameter: 8 inches Logged By. Shane Edmunds Sampler 18"long x 2 diameter split spoon Depth to GW: Ofirst encountered: 40 feet bos -Static feet b s Sample Blow Sam le De th p Lithologic pip T e No. Count Tlme Recov. Well Details Scale Column Descriptions of Materials and Conditions (PPM) 21 A B --------Silty clay,60%clay,40%silt,cemented,moist,caliche 25 41 0 CL Sandy clay,70%clay,30%sand,saturated,light olive brown 2.5Y 5/3, --SF__WV_ ---------------------------- ------e------------------------------------------------------------------------------------------------------------ S IW-4-41 30 1253 90% caliche --- -------------------- -------- -------- —42 ------------------------------------------------------------------------------------------------------------ Sandy clay,600 clay,300 fine-coarse sand, 10%fine gravel,saturated 25 43 159-------- — — ----- - — --- -------------- - - -- -— ----- — -- 159 S IW 443 28 1258 67% Sandy clay,80%clay,20%fine sand,wet -------------------31 44 ------ --------------------------------------- 45 -------------------------------------------------------------------------------------------------------------- 29 Sandy clay,70%clay,30%fine send,wet,light olive brown 2.5Y 5/4 32 — —33 — 46 S IW-4-46 40 1305 100% ---------------------------------------------------------------------------------------------------------- ---------------------------- ------- —47 35 48 As above,60%clay,40%sand -- -- ---------------------------------------------------— ----— — ---- --- _21 S IW-4-48 50(5) 1310 67% 49 50 --- - — — — :; above 26 -- -------------------- ---- - — — — — — ---------------- -- 34-- 5 SIW-4-50 18 1318 50°k 51 SC Clayey ° _—_-_________14___________-------;„.. y y sand,70 Yo fine sand,30%clay,saturated,sticky ------------------— - — ----------------------------- c i1'f i 52 20 53 As above —- -- — - S IW 4-53 33 1328 60% -----------------o----------o---------- ------------_Sandy L clay.60/o clay,40/o fine sand,wet,caliche 99- — ---- 37 54 ------------------------------------------ — -- 55 As above 40 25__- 56 SM Silty sand,80%fine-medium sand,20%fines,saturated — --------------- ----------- -------- — — — — 27 -- — ------------------------------ -------- ------------------- --------------- ::;:;:::. 57 21 t 58 As above90 S IW 458 1335 60%23 ° silt,10%sand,wet --- —-- ------ — CL Silty clay with sand,60%clay,30/o 30 59 60 Comments Recovery Sample ENVIRONMENTAL,INC.