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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: SG -121 Page 1 of 1 Project: LFG Monitoring Well Installation Remarks: Client: San Joaquin County Moved intermediate plug down 8 ft due to clean sand layer. Location: Foothill Sanitary Landfill Shallow probe moved up 1 ft - Probe got stuck in augers 6484 North Waverly Road, Linden, CA during construction and gravel fell in hole before setting pip N rn o J Material Description Well Diagram CL SP -SM ::'.:::.:: ' POORLY GRADED SAND WITH SILT (SP-SM)dark brown Cement (7.5YR 3/2), moist, approximately 90 % fine-grained sand, 10 5 % fines g Bentonite ML — — — — — — SANDY SILT (ML) dark reddish gray (5YR 4/2), moist, Gravel 10 filter pack nonplastic, approximately 30 % sand, 70 % fines Bentonite 15 15 20--20 .: 25 - same, except dark grayish brown (10YR 3/2) 25 30 30 35 - increasing sand content, approximately 40 % sand 35 Gravel filter pack 40 ----------- 40--. ' SP -SM .'::.::.:. POORLY GRADED SAND WITH SILT (SP-SM)dark brown (7.5YR 3/2), moist, approximately 90 % fine-grained sand, 10 45 % fines 45--: 50 . '•:: 50 55 --- :::::: ----------------------------------- SANDSTONE brown, moderately cemented, fine-grained 55 Bentonite 60 ...... 60-7 ML _ _ _ _ _ _ SILT (ML), dark brown, moist, approximately 30 % sand, 50 65 % fines, 20 % gravel, pieces of sandstone 5 . ; 65-- SP -SM -- POORLY GRADED SAND WITH SILT (SP-SM)dark brown, 70 moist, 80 - 90 % fine-grained sand, 10 - 20 % fines 70 Gravel 75 75 filter pack 0 80-- 80- 8085 85 Drilling Company: Technicon Date Started: 8/3/2009 Time Started: 7:20am 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