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1 <br /> The average TPHg concentration for stockpiled soil was 19 3 pprn with a range from <0 5 to 37 <br /> ppm These concentrations are permissible for uncontrolled soil aeration according to guidelines <br /> ' set forth by the San Joaquin Valley Unified Air Pollution Control District <br /> If you have any questions regarding this letter report, please give me a call I am submitting the <br /> ' required copy of this letter to San Joaquin County Environmental Health Division (SCEHD) <br /> Thank you very much for the opportunity to assist with your environmental needs <br /> Sincerely, <br /> WALSH & ASSOCIATES, INC <br /> 01i <br /> Je re A Cla on R G k,"�Q1EY C(,q` <br /> Senior Project Manager > NO.5597 2 <br /> icc Mr Harlin Knoll, REHS (SCEHD) <br /> Encl Laboratory Reports vE CA�1�� <br /> 1 <br />' 1 <br />� i <br /> 1 <br /> I <br /> i <br /> TT T�� <br /> 1680-010 ltr <br /> \s/�s/ 3 <br /> & Associates, Inc <br /> Environmental Scientists and Engineers <br />