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Get#ler—Ryan, Inc. <br /> Log of Boring MW-19 <br /> PROJECT: Tosco (78) Service Station No. 11195 LOCATION: 18500 South Interstate 5, Lathrop, CA <br /> GR PROJECT NO. : 140193.14 CASING ELEVATION: 19.4 feet (MSL) <br /> DATE STARTED: 12/10/02 WL (ft. bgs): 18.0 DATE: 12/10/02 TIME: 10:20 <br /> DATE FINISHED: 12/10/02 WL (ft, bgs): 9.95 DATE: 12/11/02 TIME: f0:05 <br /> DRILLING METHOD: 8 in. Hollow Stem Auger TOTAL DEPTH: 20 feet <br /> DRILLING COMPANY: Cascade Drilling GEOLOGIST: Andrew Smith <br /> ua <br /> * m <br /> z J u-, WELL DIAGRAM <br /> e LL Z U J GEOLOGIC DESCRIPTION <br /> CL w w <br /> Q N O O Q <br /> LU <br /> a a ce o <br /> o a m co cn <br /> Asphalt and base rock - 6 inches chick. T <br /> SM SILTY SAND WITH GRAVEL (5M) -- dark brown (7.5YR <br /> 3/3), moist, dense; 60% fine sand, 25% gravel, 15% silt. v <br /> o m mu <br /> R 3 c Uo <br /> a w uu <br /> SILTY SAN❑ (SM) - light brown (7.5YR 6/3), moist, <br /> 4 medium dense; 70-80% sand, 20-30% silt. h = <br /> 0 <br /> 0 21 — A <br /> SP POORLY GRA❑E❑ SAND (5P) - light brown (7.5YR <br /> .: 613), moist, medium dense; 95% fine to medium sand, 5% — <br /> silt. _ <br /> !9 MW-19- <br /> S (10) o — <br /> 12 <br /> POORLY GRADED SAND WITH SILT (SP-SM) - brown <br /> ' (7.5YR 4/3), wet, medium dense; 90% fine sand, 10% <br /> silt. m <br /> 0 19 MW-19- _ <br /> 16 <br /> S (15) —- _ <br /> SM SILTY SAND (SM) - brown (7.5YR 4/3), wet, medium <br /> dense; 60-70% fine sand, 30-40% silt, trace pyrite. <br /> 0 20 C <br /> 20 Bottom of boring at 20 feet bgs. <br /> (* = Converted to equivalent standard penetration <br /> blows/foot.) <br /> 24 <br /> 28 <br /> JOB NUMBER: 140193.14 Page 1 of 1 <br />