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AdvancedGeo <br /> Environmental <br /> 10 July 2017 <br /> AGE Project No. 14-3154 <br /> Mr. Brendan Kenny <br /> Central Valley Regional Water Quality Control Board <br /> 11020 Sun Center Drive, Suite <br /> Rancho Cordova, CA 95670 <br /> Subject: Soil Investigation Work Plan —July 2017 <br /> FORMER PILKINGTON NORTH AMERICA FACILITY <br /> ASP/RWM Properties, et al. <br /> Permittee : JONES DEVELOPMENT - FORMER PILKINGTON GLASS <br /> FURNACE FACILITY (WDR 05-01-114) <br /> 500 East Louise Avenue, Lathrop, California <br /> 17100 Murphy Parkway (APN 198-120-09) <br /> Dear Mr. Kenny: <br /> At the request of ASP/RWM Properties, et al., Advanced Geo Environmental, Inc. (AGE) <br /> has prepared this Soil Investigation Work Plan — June 2017 for the property located at <br /> 17100 Murphy Parkway — permitted with 500 East Louise Avenue, Lathrop, California <br /> (site).A location map of the site is presented in Figure 1; a site plan depicting site features, <br /> boring and well locations, and proposed soil boring locations is presented in Figure 2. <br /> BACKGROUND <br /> The Central Valley Regional Water Quality Control Board (RWQCB) issued the facility <br /> Waste Discharge Requirements (WDRs) for discharge of wastewater and stormwater <br /> through on-site treatment. Three active areas were utilized and currently only two location <br /> accept stormwater and treated wastewater. Four areas of discharge were designated: <br /> Site A — 35 acres of open area no longer used; Site B — 13.5 acres not yet used for <br /> application of water; Site C — 8.5 acres used for application; and the lawn areas — 11.4 <br /> acres used for land application along the west and northern edges of the on-site storage <br /> building (see attached site plan and Map Exhibit from the WDR showing the land <br /> application areas and the monitoring wells). The eight (8) groundwater monitoring wells <br /> installed (see Map Exhibit from the WDR) to monitor and evaluate the potential impact to <br /> shallow groundwater quality from the operation of wastewater discharge under the WDR. <br /> Q `t!/ <br /> 837 Shaw Road • Stockton, CA 95215 <br /> Telephone(800) 511-9300 • Fax (888) 445-8786 <br /> An Emp/oyerOwned Company <br />