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Advanced <br /> • <br /> GeoEnvironmental, Inc . <br /> 30 January 2015 D <br /> AGE Project No. 14-3154 FEB 2 6 2015 <br /> Mr. Dana G. Parry ENVIRONMENTAL HEALTH <br /> REYNOLDS & BROWN PERMIT/SERVICES <br /> 1200 Concord Avenue, Suite 200 <br /> Concord, CA 94520 <br /> Subject: Preliminary Site Assessment Report <br /> PILKINGTON NORTH AMERICA — LATROP FACILITY <br /> 500 EAST LOUISE AVENUE, LATHROP, CALIFORNIA <br /> Dear Mr. Parry: <br /> At your request, Advanced GeoEnvironmental, Inc. (AGE) has prepared this Preliminary <br /> Site Assessment Report for the property located at 500 East Louise Avenue, Lathrop, <br /> California (site) <br /> The scope of work includes advancement of seven (7) soil probe borings for the <br /> collection of soil samples and water samples to evaluate the presence and define the <br /> type or extent of petroleum hydrocarbon-impacted near the fuel oil tank spill areas, <br /> southwest and southeast of the electrical substation. Investigation of potentially metals- <br /> impacted soil or groundwater, which includes advancement of 14 soil probe borings for <br /> the collection of soil samples and water samples at the sites where former glass debris <br /> and dust waste streams were managed or disposed and/or were surface water features <br /> appear to have been comingled with waste. <br /> Based on PNA Lathrop facility Recognized Environmental Conditions (REC), the <br /> following items have been evaluated: The presents of water quality degrading chemicals <br /> within the shallow upper aquifer, within an area of the property; former glass debris and <br /> dust waste streams on the southwestern portion of the property; a report of a 1985 <br /> straw oil line leak at a historical above ground storage tank (AST), at the south edge of <br /> the property which reportedly in 1986 underwent investigation; a report of a 1992 fuel oil <br /> leak from an AST, at the west side of the on-site transformer station on the property <br /> which reportedly underwent investigation and excavation. <br /> 837 Shaw Road • Stockton, CA 95215 <br /> Telephone(209)467-1006 • Fax(209)467-1118 <br />