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- i <br /> CLEARWATEI <br /> • G R O U P, I N C. <br /> Mr. Ron Rowe October 20, 1995 <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P.O. Box 388 <br /> Stockton, California 95201-0388 <br /> Re: ADDENDUM TO WORKPLAN for Olivarez Property, 300 South <br /> California Street, Stockton, California (dated August 1, 1995) <br /> Dear Mr. Rowe, <br /> Clearwater Group, Inc. (Clearwater) is pleased to submit this Addendum to <br /> the Workplan for Disposal of Stockpiled_Soil. Backfilling Excavations, and <br /> Additional Site Assessment for the Olivarez Property in Stockton <br /> (Workplan). The Workplan is dated August 1, 1995. <br /> This Addendum notes modifications to the Workplan in accordance with the <br /> Workplan Review (dated October 2, 1995) by San Joaquin County Public <br /> Health Services/Environmental Health Division (PHS) and conversations <br /> on October 5th and 16th between Mr. Ron Rowe of the PHS and Jeanna <br /> Hudson of Clearwater. This Addendum should be reviewed in conjunction <br /> with the original document; the Addendum notes changes to the Workplan, <br /> but is not intended to replace the document. <br /> Modifications to Section 2.0 of the Workplan (PROPOSED WORK) <br /> 2.1 Sampling and Removal of Soil Stockpiles <br /> In accordance with PHS requirements, two soil samples (sets) will be collected <br /> for each 50 cubic yards of soil in the stockpile: The sample sets will be <br /> composited by the laboratory into one sample. Composite samples collected <br /> from the large soil stockpile (which contains soil from the UST excavation) <br /> will be analyzed for the following: <br /> • TPH as gasoline (EPA Method 8015 Modified; detection limit 1 ppm) <br /> • TPH as diesel fuel (EPA Method 8015 Modified; detection limit 1 ppm) <br /> 1 <br /> 1125 Atlantic Avenue•Suite 102 • Alameda • California • 94501 • (510)337-8730 • Fax(510)523-0984 <br />