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Advanced <br /> GeoEnvironmental, Inc. <br /> 19 <br /> 30 August 1999 �T���1 x,99 <br /> AGE-NC Project No. 98-0448 <h9G�Cq <br /> ccs, <T,y <br /> Mr. Harlin Knoll <br /> San Joaquin County Public Health Services Environmental Health Division <br /> 304 East Weber Avenue, 3`d Floor <br /> Stockton, CA 95202 <br /> Subject: Approval of Former Fate Evaluation Soil Sample Analysis <br /> SIERRA LUMBER <br /> 375 West Hazelton Avenue, Stockton, California <br /> Dear Mr. Knoll: <br /> At the request of Mr. Bob Long of Sierra Lumber,Advanced GeoEnvironmental, Inc. (AGE) is writing this <br /> letter to confirm approval from the San Joaquin County Public Health Services Environmental Health <br /> Division (PHS-EHD) for soil samples collected in July 1998 for fate evaluation analysis at 375 West <br /> Hazelton, Stockton, California. <br /> On 29 July 1998, soil samples were collected from soil boring/monitoring well MW-4 utilizing hollow stein <br /> auger drilling techniques. Soil samples collected from MW-4 at depths of 25-feet below surface grade(bsg) <br /> and 45 feet bsg were selected for fate evaluation analysis of intrinsic permeablility, porosity, moisture <br /> percentage and total organic content. The soil sample fate evaluation analysis was reported to the PHS-EHD <br /> in the Quarterly Report-September 1998,dated 29 October 1998. It is AGE's intent to use the results of the <br /> fate evaluation analysis to supplement all ongoing corrective action feasibility studies. <br /> The Underground Storage Tank Cleanup Fund has informed Sierra Lumber that the above referenced fate <br /> evaluation analysis is not a reimbursable cost because was never requested or approved in writing by the <br /> PHS-EHD. As a result,AGE is requesting written approval by the PHS-EHD for the above referenced fate <br /> evaluation analysis. <br /> Sincerely, <br /> Advanced GeoEnvironmental, Inc. <br /> J. Lk,— <br /> Timothy J. <br /> clear <br /> Project of st <br /> 3315 E.Miraloma Avenue, Suite 1.17,Anaheim,California 92806 <br /> Telephone(714)996-5151 FAX(714)996-5182 <br />