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I ENVIR Page 3 April 19, 2012 Project Numbers 2012-04-010 Mr. Severin 1025 Seward Way Stockton, CA 95207 Subject: Soil Sampling Workplan For WATERLOO PROPERTY 2377 N Waterloo Rd. & 2361 E Waterloo Rd. Stockton, CA 95205 Dear Mr. Severin: SUMMARY Enviro Assess has been retained by Mr. Severin, to conduct a Soil Sampling Investigation of the former underground storage tank at the property at 2377 N Waterloo Rd. & 2361 E Waterloo Rd., Stockton, CA 95205. The property is currently being used by a hardware and small equipment repair store. Our office previously completed a Phase I Environmental Site Assessment (November 2011) in which we identified the former tank as an area of concern. Based on the Phase I, a underground storage tank appeared to have been installed onsite. No removal of the tank was noted in the conty files. No samples were collected or analytical results reviewed from the possible removal. A Phase II Investigation in the area of the UST along with samples collected based on the San Joaquin County UST closure requirements is recommended and proposed in this workplan. The workplan is organized into the following sections: general information, health and safety plan, soil sampling procedures, proposed time schedule for work, and report preparation. We understand the investigation may not proceed until after Owners and County's approval of the workplan. A California licensed engineering geologist will oversee the investigation on the site. GENERAL INFORMATION Soil Sample Purpose, Location, and Depth The basic purpose for collecting soil samples is to identify if any impacts to on-site soils which may have occurred as a result of leakage from the former underground storage tank. The requested borehole locations are described below: ENVIRO ASSESS ENVIRONMENTAL • ENGINEERING • GEOLOGY PHONE (877) 629-6838 FAX (877) 623-5493