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Vector Engineering, Inc. 143E Spring Hill Drive Grass Valley, CA 95945 Telephone: 530-272-2448 Fax: 530-272-8533 Project: LFG Monitoring Well Installation Client: San Joaquin County Location: Foothill Sanitary Landfill 6484 North Waverly Road, Linden, CA rn U)J � U � 0 a m C7 - 121 Page 1 of 1 f Remarks: Moved intermediate plug down 8 ft due to clean sand layer. Shallow probe moved up 1 ft - Probe got stuck in augers during construction and gravel fell in hole before setting pipl. Material Description SP -SM POORLY GRADED SAND WITH SILT (SP-SM)dark brown (7.5YR 3/2), moist, approximately 90 % fine-grained sand, 10 5 % fines 10 ML ( SANDY SILT (ML) dark reddish gray (5YR 4/2), moist, 15 ( nonplastic, approximately 30 % sand, 70 % fines t 20 25 - same, except dark grayish brown (10YR 3/2) 25 30 30 35 I I I I I - increasing sand content, approximately 40 % sand 135 40 L _ 40 SP -SM POORLY GRADED SAND WITH SILT (SP-SMJdark brown (7.5YR 3/2), moist, approximately 90 % fine-grained sand, 10 45 %fines 45 5050 55 ::: SANDSTONE, brown, moderately cemented, fine-grained 55 60 :.. so —------------------------------------- ML SILT (ML), dark brown, moist, approximately 30 % sand, 50 65 % fines, 20 % gravel, pieces of sandstone s5 SP -SM POORLY GRADED SAND WITH SILT (SP-SM)dark brown, 70 moist, 80 - 90 % fine-grained sand, 10 - 20 % fines 70 75 75 80 80 85 s5 Well Diagram Bentonite Gravel filter pack Bentonite Gravel filter pack Bentonite Gravel filter pack Drilling Company: Technicon Date Started: 8/3/2009 Time Started: 7:20arn Drilling Method: Hollow Stem Auger Date Completed: 8/3/2009 Time Completed: 3:20pm Boring Diameter: 8 in Elevation (ft): 245.662 Total Depth (ft): 86.5 Logged By: Pete Holland, CEG Groundwater Level: NFWE Sampling Method: Grab from cuttings U]