ARCHIVED REPORTS_2014 PRELIMINARY SITE ASSESSMENT RPT

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Advanced GeoEnvironmental Inc. Preliminary Site Assessment Report PILKINGTON NORTH AMERICA – LATROP FACILITY 500 East Louise Avenue, Lathrop, California 1.0. INTRODUCTION At the request of Mr. Dana G. Parry of REYNOLDS & BROWN, Advanced GeoEnvironmental, Inc. (AGE) has prepared this Preliminary Site Assessment Report for the property located at 500 East Louise Avenue, Lathrop, California (site). On-site structures locations are illustrated in Figure 2. The site property is located along the south side of East Louise Avenue in Lathrop, California, an incorporated area of San Joaquin County. The property comprises seven parcels (198-120-08 main, 198-120-09 southern and 198-210-14 eastern) totaling approximately 113 acres. Based on PNA Lathrop facility Recognized Environmental Conditions (REC), the following items will be evaluated: The presents of water quality degrading chemicals within the shallow upper aquifer, within an area of the property; former glass debris and dust waste streams on the southwestern portion of the property; a report of a 1985 straw oil line leak at a historical above ground storage tank (AST), at the south edge of the property which reportedly in 1986 underwent investigation; a report of a 1992 fuel oil leak from an AST, at the west side of the on-site transformer station on the property which reportedly underwent investigation and excavation. The scope of work includes advancement of seven (7) soil probe borings for the collection of soil samples and water samples to evaluate the presence and define the type or extent of petroleum hydrocarbon-impacted near the fuel oil tank spill areas, southwest and southeast of the electrical substation. Investigation of potentially metals- impacted soil or groundwater, which includes advancement of 14 soil probe borings for the collection of soil samples and water samples at the sites where former glass debris and dust waste streams were managed or disposed and/or were surface water features appear to have been comingled with waste. Two parcels have been included in the investigation 198-120-08 main and 198-120-09 southern. The work conducted under procedures outlined in the AGE prepared Preliminary Site Assessment Work Plan 10 November 2014 and borings were destroyed under permit by San Joaquin County Environmental Health Department (SJCEHD) requirements for investigation of contaminated sites. 2.0. SOIL PROBE BORING ADVANCEMENT On 04 December 2014, seven soil borings (AB1 through AB7) were advanced near the 1985 straw oil line leak and 1992 fuel oil leak from an AST, south of the electrical transformer station and west of the station.