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Al <br /> LOG OF EXPLORATORY BORING <br /> • PROJECT NUMBER 20805-140 010 WELL NO AS-1 <br /> PROJECT NAME ARCO #548, Stockton PAGE 3 of 4 <br /> BY Pet Jimison DATE 10/26/98 SURFACE ELEVATION <br /> FID PENETRA- GROUND DEPTH 13 a i WELL <br /> RECOVERY 3 DESCRIPTION <br /> READING TION WATER IN a bETAIL <br /> (ppm) (blows/6 ) (ft/ft) LEVELS FEET N =v <br /> 40 18 15/15 SILT (ML), dark grayish brown (10YR, 4/2) 95% fines <br /> 36 5% sand caliche pieces - 1/8 diameter blUish gray <br /> 50 discoloration, wet mild odor <br /> 31 18 15/15 45 SANDY SILT (ML), very dark grayish brown (10YR <br /> 36 3/2)/ 70% fines 30% fine sand slight iron oxide <br /> 50 discoloration wet no odor <br /> 0 23 13/15 50 SAND (SW), gray (10YR, 5/1), 20% fine, 55% medium, 25% <br /> 33 coarse sand wet no odor <br /> 50 <br /> 0 24 04/15 55 SANDY SILT (ML), dark yellowish brown (10YR 4/4) <br /> 50/5" 80% fines 20% fine sand damp no odor <br /> 60 <br /> . � REMARKS <br /> EMCON <br />