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Vector Engineering,Inc. 143E Spring Hill Drive WELLSG-122 Grass Valley, CA 95945 Page 1 of 1 Telephone: 530-272-2448 Fax: 530-272-8533 Project: LFG Monitoring Well Installation Remarks: Client: San Joaquin County Location: Foothill Sanitary Landfill 6484 North Waverly Road, Linden, CA rn U J C j Q Material Description Well Diagram o � C7 CL SANDY CLAY(CL)l dark grayish brown (10YR 4/2), dry, stiff, Cement glow/medium plasticity, shrinkage c_ra_ck on_s_urfa_ce -_-_--J- 5 SP-SM POORLY GRADED SAND WITH SILT(SP-SMaverydark 5 Bentonite gray (10YR 3/1), moist, fine-grained sand, 10-20% fines Gravel 10 10 filter pack - 12- 14ft with gravel Bentonite 15 SM SILTY SAND(SM) dark yellowish brown (10YR 4/4), moist 15 approximately 60%fine-grained sand, 40% fines, occasional thin lenses of gravel 20 ML— . --------------------------------- zo SANDY SILT(MLA dark yellowish brown (10YR 4/4), moist, low plasticity to nonplastic, approximately 30%fine-grained 25 sand, 70%fines 25 Gravel filter pack 30 - hAard drilling,lithified sandstone tended encountered 30 ---------------------------------- 35 :::::: SANDSTONE, black, moderately cemented,fine-grained 35 ML_ ........ _SILT ----- ------------------------ 40 :::::: SANDSTONE, black, high porosity 40 Bentonite 45 ...... 45 dark grayish brown, low porosity, interbedded silt, hard drilling 50 50-- 55 -- :;;:;: 55 Gravel filter pack 65 :.. 65 70 75 - 75-- 80 - 5=80 - 80= 85 A.13 Drilling Company:Com an : Technicon Date Started: 7/31/2009 Time Started: 12:00pm Drilling Method: Hollow Stem Auger Date Completed: 7/31/2009 Time Completed: 3:50pm Boring Diameter: 8 in Elevation (ft): 229.202 Total Depth (ft): 69.5 Logged By: Pete Holland, CEG Groundwater Level: NFWE Sampling Method: Grab from cuttings