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L44 WEISS ASSOCIATES WELL MW-2 (BIS-B) OVA GRAPHIC (ppmv) LOG DESCRIPTION 0 Q Asphalt _ _ Sandy CLAY (CL), brown, medium H T stiff, damp, 20-30% very fine to W --- medium sand, no to low plasticity, LL W ---- low K, strong sweet odor W 5 5 U �T LL 4 0" ID PVC — — V} casing - - _ Silty SAND (SM), brown, dense to © 10 1p -`,_ ;T', very dense, damp, 20-30% silt, 70- � :�� 80% very fine to very coarse sand Z moderate K, strong sweet odor — O green clay, strong sweet odor 0 � (cuttings) __--_- - SILT (ML), light brown, hard, damp, � --T- 5-10% very fine to fine sand, no 15 15 2 - plasticity, moderate K, strong sweet odor i Portland -_ -"� OVA value at 15' from cuttings W cement -_- m with 3-5% - bentonite �T-�='��t- Silty SAND (SM), olive-brown, -�- dense, damp, 20% silt, 80% very fine to fine sand, moderate to high L- 20 20 250' ` x " - K, strong sweet odor EL Sandy SILT (ML), light brown, hard, - damp, 20-30% very fine to fine r--_ sand, no plasticity, moderate K, strong sweet odor inch-r.dim EXPLANATION Water level during drilling (date) Logged By Eric W Anderson 3Z Water level (date) Supervisor Joseph P Theisen, RG 4981 Contact (dotted where approximate) Drilling Company P C Exploration, Roseville, CA —�—�- Uncertain contact License Number Lic #C57-265556 Gradational contact Driller Dave Orlandi Location of recovered drive sample Drilling Method Hollow-stem auger — Location of drive sample sealed Date Drilled January 24, 1991 for chemical analysis Well Head Completion 4" locking well-plug, traffic-rated vault Cutting sample Type of Sampler Split barrel (1 5", 2" ID) K = Estimated hydraulic conductivity Ground Surface Elevation 21 54 feet above mean sea level Diamond Walnut Growers Boring Log and Well Construction Details - Well MW-2 (B6-B) 1050 South Diamond Street Stockton, California 1 412197