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_ c Conestoga-Rovers .asociates BORING/11VELL LOG 19449 Riverside Drive, Suite 230 Sonoma, CA 95476 Telephone: 707-935-4850 Fax: 707-935-6649 CLIENT NAME Shell Oil Products US BORINGIWELL NAME MW-3 JOB/SITE NAME Former Shell Pipelines-Mountain House NBH B DRILLING STARTED 04-Seo-09 LOCATION Tracy,California DRILLING COMPLETED 14-Sep-09 PROJECT NUMBER 060222 WELL DEVELOPMENT DATE(YIELD) 24-Sep-09(25.0 gallons) DRILLER Gregg Drilling GROUND SURFACE ELEVATION 116.68 ft above msl DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 118.79 ft above msl BORING DIAMETER 8" SCREENED INTERVAL 23 to 38 fbq LOGGED BY C. Rodriguez DEPTH TO WATER(First Encountered) 28.0 ft(14-Sep-09) Sz REVIEWED BY J.Gaarder DEPTH TO WATER(Static) 30.75 ft(30-Sep-09) 1 REMARKS Air knifed to 1 fbq:water knifed to 5 fbq. Above ground construction consisting of a 2 ft Stovepipe 0 g, U U� CL W Z U CL 0z a � w O SOIL DESCRIPTION Z M WELL DIAGRAM a m0 ¢ W m =i 0 on- U U 0 SILT(ML);(fill);brown(10YR 4/3);dry;20%clay,70% Completed with slit,10%fine-grained sand;low plasticity;grassy surface a 2'tall with cracks up to 1.5"-diameter,silt is very compacted with stovepipe. prismatic structure. 0.4 z MW-3.6 15- @ 5'-(fill) very dark grayish brown(2.5Y 3/2);dry;20% 17 s clay,70%silt,10%fine-grained sand;low plasticity; 17 blocky structure. 79 ML 0.3 a a 0.0 a MW-3-10 10 Portland Type If @ 10'-dark yellowish brown(10YR 3/4). e @ 10.6-SILT with sand(ML);dark yellowish brown i1 (10YR 3/4);dry;5%clay,80%silt,15%fine to 0.0 s medium-grained sand;low plasticity;blocky structure; trace fine gravel. u 0.0 2 MW-3-15 15- 1 o t7 16.3 17 M Silty SAND(SM):light olive brown(2.5Y 5/4);dry;5% 17.0 t9 ML clay,30%silt 65%fine to medium- rained sand. 18.0 $ 0.0 14 SW Sandy SILT(ML);light olive brown(2.5Y 514);dry;5% 19.0 ,5 SPSM dy; r ay,55%silt,40%fine-grained sand;low plasticity; 19-7 0.0 19 Mw3 zo 20 lock structure. 1 Bentonite Seal < Iu 1 SAND with gravel(SW);olive brown(2.5Y 4/3);dry;5% 1 o Ia 1 silt,70%fine to coarse-grained sand,25%fine gravel; 1 Monterey Sand 'a 0.0 193ML I ounded and subrounded gravel up to 1.5"diameter. 1 82112 15 1 SAND with silt and gravel(SP-SM);light olive brown 1 16 MW 3-25 25 1(2.5Y 5/4);moist; 10%silt,65%fine to medium grained 1 = 0.0 X zo lsand`25%finegravel_______________f 26.0 ° SM Sandy SILT(ML);light olive brown(2.5Y 5/4);dry;10% day,50%silt,40%fine-grained sand;low plasticity. 28.0 g 9light olive brown(2.5Y 5/4);moist;20%clay, 28.5 12 70%silt,10%fine-grained sand;low plasticity;buttery 0.0 a 30 texture;caliche veins. w 71 MW-3-30 2"-diam.,0.020" 13 SILT with sand(ML);dark yellowish brown(10YR 414); - Slotted Schedule ML dry;15%clay,60%silt,25%fine-grained gravel;low ao PVC N ,° lastici S s Silty SAND(SM):olive brown(2.5Y 4/4);moist;30%silt, 7 35 70%fine rained sand. 35.5 c+ 0'0 MW-3J6 Sm SAND with silt SPSM;olive brown(2.5Y 4/4);moist to 36.5 19. et; 10%silt 90%fine to medium rained sand. 2 ML SILT(ML);olive brown(2.5Y 4/4);moist;20%clay,70% 38 0 = silt, 10%fine-grained sand;medium plasticity. SILT with sand(ML);yellowish brown(10YR 5)4);moist w 40 to wet;15%clay,70%silt, 15%fine-grained sand;low Bottom of = plasticity. Boring @ 38 ft @ 31'-wet;20%clay,55%silt,25%fine-grained sand; ned um plasticity. z @ 33'-wet;25%clay,55%silt,20%fine-grained sand; O edium plasticity. 45 Silty SAND SM•yellowish brown(10YR 5/4);wet: 10% E lay,20%silt 70%fine to medium rained sand. a ISandy SI (MQ:yellowish brown(10YR 5/4); 10%clay, 0 0%silt 40%fine d rained sanmedium plasticity. J J 50 PAGE 1 OF 1