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rjAY � 195 08:09HM CLEWWRTER GROLF . <br /> CLEARWATER <br /> G R O U P, 1 N C. <br /> Mr. Ron Rowe May 22, 1995 <br /> Sa.xx Joaquin County Public Health Services <br /> Environmental Health Department <br /> P. 0. Box 388 <br /> Stockton, C.A, 95201-0388 <br /> Re: Qlivarez Property, 300 South Stockton Street, Stockton <br /> Dear Mr. Rowe, <br /> I am currently in the process of finalizing the well installation/groundwater <br /> sampling report for activities recently completed at the referenced site. As <br /> backfilling the currently open excavation is a topic possibly worth consideration in <br /> this submittal, I thought it worthwhile to discuss the elements of a such a <br /> recommendation with you prior to sending out the final report for your review. <br /> As you are aware, the excavation floor is currently about 10 - 15 feet below ground <br /> surface. Depth to groundwater was measuredd at about 45 feet in the recently <br /> installed investigative wells. It is unlikely that hydrocarbon-impacted soil, if it <br /> exists beneath the tank pit, will be able to be removed through further excavation, <br /> given the constraints posed by the building and nearby streets. It is therefore <br /> probably unnecessary to leave the excavation open for future remedial possibilities. <br /> The elements of a backfilling recommendation should include the removal of <br /> existing vegetation and debris, as well as any other physical preparatory measures <br /> required for appropriate compaction. Are there other considerations that you would <br /> like to see included in this recommendation? If so, please give me a call to discuss. <br /> With your input, I believe a complete recommendation to backfill (if you concur <br /> that backfilling is appropriate) is most succinctly presented with the results of the <br /> preliminary investigation. <br /> Thanks in advance for your help. I look forward to speaking with you again soon. <br /> Very truly yours, <br /> learwater Group, Inc. <br /> Mark B. Niebanck, K G. <br /> Operations Manager <br /> cc. Ms. Brooke Birkie, Neumiller & Beardslee <br /> 1125 Atlantic Avenin•Suite 102*Xameda•California •94501 •(.5-10)337.8730 Fax(510)52'3-09 4 <br />