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1 <br /> Wm. I Hunter & Associates 2220 Loma Vista Dr <br /> Registered Geologists Sacramento, CA 95825 <br /> etroleum& Mineral Appraisers (916) 972-7941 <br />' FAX (916) 972-1683 <br />' WORKPLAN FOR <br /> DRILLING & SAMPLING <br /> BOREHOLES <br /> 6215 TAM O 'SHANTER DRIVE <br />' STOCKTON, CA (SITE CODE 1258) <br /> November 1 , 1991 <br />' PURPOSE OF WORK: To delineate horizontal & vertical extent of minor <br /> amounts of HTEX found in 3 of 5 boreholes previously drilled on <br />' Normac and adjacent property owned by Hammertown Partners. <br /> PROPERTY LOCATION. 6215 Tam O'Shanter Drive, Stockton, California. <br />' NAME & ADDRESS OF PROPERTY OWNER: NORMAC, Inc. , 3449 Longview Drive, <br /> North Highlands, CA 95660 <br />' NAME & PHONE NO. OF CONTACT PERSON: Peter Voskes, (916) 482-2924 <br /> LEGAL DESCRIPTION OF PROPERTY: Refer to Exhibit A. <br /> PA N'S: 094-050--11 , (Normac; ) & 094---050-21 , (Hammertown Partners. ) <br /> Refer to Exhibit B. <br />' <br /> HISTORY OF PRIOR WORK; In 1989, a 1 ,000 gallon UST, which had <br /> previously Contained gasoline, was removed from the property. Soil <br /> samples taken from beneath the site of the removed tank were tested <br />' for HTEX, EDB, TPH-G, and organic lead. The sample from the east <br /> end of the site was clean, but the sample from the west end revealed <br /> the presence of significant amounts of HTEX, EDIT, & TPH-G. Refer to <br /> Table I for details. <br />' In January, 1990, work commenced to re--excavate the site using Jim <br /> Thorpe Oil equipment & personel . Approximately 300 cubic yards of <br />' spoil was removed, producing an excavation approximately 30 ' X 19 ' X <br /> 21 ' deep; (refer to Exhibit C. ) A total of 7 soil samples were taken <br /> from the sides and bottom of the pit as shown on Exhibits D & E. <br />' Laboratory analyzes, (Table II , ) revealed that both bottom samples <br /> and the two from the west sidewalls had unacceptable levels of BTEX <br /> & TPH-G. A workplan was prepared and submitted to remove additional <br />' spoil , but the Sart Joaquin Co. Environmental Health Division <br /> responded by stating that borings and/or monitoring wells would be <br /> required; (refer to Exhibit F. ) <br /> On July 17, 1990, a soil contamination workplan was submitted to the <br /> County EHD, (Exhibit G, ) to drill , log, & sample 5 boreholes to a <br />' 1 <br /> I <br />