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R603 UPDATE-14 3/25/93 <br /> (DCE) - retention time 2 079 minutes, Trichloroethylene (TCE) <br /> retention time 3 023 minutes and Tetrachloroethylene (PCE) <br /> retention time 3 75 minutes . <br /> 6 . 0 TIME FRAME <br /> March 11, 1993 Quarterly sampling and monthly site <br /> monitoring <br /> April 15, 1993 UPDATE STATUS QUARTERLY SAMPLE REPORT <br /> for March, 1993 <br /> 7 . 0 HEALTH AND SAFETY <br /> This site is being treated as a class D site, normal common sense <br /> is to be used, see Appendix C, Health and Safety Plan. <br /> 8 . 0 LIMITATIONS <br /> The conclusion and recommendations presented in this report are <br /> based upon the following <br /> A The exploratory test borings drilled at the site. <br /> B The Bouwer and Rice Slug test . <br /> C. The Vapor Extraction Source Test . <br /> D. The observations of field personnel <br /> E The results of laboratory analysis performed by a state <br /> certified laboratory <br /> E . Referenced documents <br /> F. Specifications supplied by "Re <br /> mox" for the Authority to <br /> Construct Permit <br /> G Our understanding of the regulations of the State of <br /> California, San Joaquin County and City of Stockton. <br /> The services performed by Western Geo-Engineers, a corporation <br /> under California Registered Geologist #3037 and/or Contractors <br /> License #513857 , have been conducted in a manner consistent with <br /> the level of care and skill ordinarily exercised by members of <br /> our profession currently practicing under similar conditions in <br /> the State of California and the Stockton area Please note that <br /> the contamination of soi and/or ground water- must be reported to <br /> the appropriate agencies in a timely manner No other warranty, <br /> expressed or ,implied, is made . �� <br /> JACK E. <br /> UAPPER <br /> George Converse ft 3037 c E. Napp <br /> Pro3 t� Geologist 1* Reg Geologist #3037 <br /> f <br /> cc Mary F. Meays, San � Health (209) 468-0337 <br /> oaqui <br /> Wilbur H. Smith II Sims-Grupe Mrg. Corp , Inc (209) 478- <br /> 9200 <br /> Ms . Betheth <br /> Thayer, R central Valley Region (916) 361-5600 <br /> PAGE 9 <br />