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Vector Engineering, Inc. 143E Spring Hill Drive Grass Valley, CA 95945 Telephone: 530-272-2448 Fax: 530-272-8533 WELL NUMBER: - 122 WW Page 1 of 1 Project: LFG Monitoring Well Installation Remarks: Client: San Joaquin County Location: Foothill Sanitary Landfill 6484 North Waverly Road, Linden, CA rn U) J = v s Material DescriptionCL Well Diagram o CL SANDY CLAY (CL) dark grayish brown (10YR 4/2), dry, stiff, low/medium plasticity, s_hrinka_ge crack on surface — — — — — — - SP-SMPOORLY GRADED SAND WITH SILT (SP-SM)very dark gray (10YR 3/1), moist, fine-grained sand, 10 - 20 % fines 10 - 12 - 14ft with gravel 15 SM SILTY SAND (SM) dark yellowish brown (10YR 4/4), moist -grained sand, 40 % fines, occasional approximately 60 % fine 20 — thin lenses of gravel_____________________J— 2 ML `----------- SANDY SILT (ML) dark yellowish brown (10YR 4/4), moist, low plasticity to nonplastic, approximately 30 % fine-grained 251 sand, 70 % fines 2 30 I - hard drilling, lithified sandstone lended encountered --- 35 SANDSTONE black, moderately cemented, fine-grained 35 WE........ 40 _SILT ------------------------------ SANDSTONh black, high porosity 40 45 - dark grayish brown, low porosity, interbedded silt, hard drilling 45 50 50-- 55 55- 60-- :: 60-- 65-- 65 70 _ 70- 75 -- 75-- 5-80-- 80-- 80— Bentonite Gravel filter pack Bentonite Gravel filter pack Bentonite Gravel filter pack ®Drilling Company: 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