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1400 Providence Highway <br /> Norwood,MA 02062 <br /> Paragon 781-278-0911 - Fax 781-278-0910 <br /> real estate due diligence • facility management • environmental services <br /> July 20, 2000 <br /> Ms. Margaret Lagorio <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Street, 31d-Floor <br /> Stockton, CA 95202 <br /> Re: Well Permit Application Work Plan <br /> 3422 West Hammer Lane, Stockton CA <br /> Paragon Job #00-3737 <br /> Dear Ms. Lagorio: <br /> Paragon Environmental .Services, Inc. (Paragon) has contracted to conduct a limited subsurface <br /> investigation at the above-referenced property (the Site). Based on correspondence from Ms. Linda <br /> Turkotte of your office, we understand that you require a work plan to process the enclosed well permit <br /> application. <br /> Scope of Work <br /> Paragon has subcontracted Spectrum Exploration, Inc. (Spectrum) of Stockton, California (C-57 <br /> licensed contractor #512268) to advance up to six soil borings at the Site and complete each as a <br /> monitoring well. The purpose of this work is to collect subsurface soil and groundwater samples at <br /> discrete locations at the Site for analytical laboratory testing. Prior environmental investigation of the <br /> Site identified the chlorinated solvent tetrachloroethene (also know as perchloroethylene, or "PCE") in <br /> soil vapor at several soil gas survey points near the southwest corner of the Site. Paragon intends our <br /> subsurface investigation to provide a more precise delineation of contamination by PCE and related <br /> compounds at this portion of the Site. <br /> According to USGS topographic information, the Site is less than 5 feet above sea level, adjacent to <br /> Fourteen Mile Slough to the west and close to both Five Mile Slough to the south and Mosher Slough to <br /> the north. Therefore, we anticipate the groundwater depth will be less than 10 feet below grade <br /> (accounting for fill material that might have been brought in during Site development). <br /> Boston • Hartford • Aspen <br />