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1 • H DEPARTMENT <br /> i ENVIRONMENTAL HEALTH <br /> SAN JOAQUIN COUNTY <br /> Unit Supervisors <br /> Z Donna K. 'Heran R.E.H.S. Carl Borgman,R.E.H.S. <br /> 1 :: �� r• :- 304 East Weber Avenue, Third Floor Mike Huggins,R.E.H.S.,R.D.I. <br /> Director <br /> AlOlsen,R.E.x.s. Stockton, California 95202-2708 Douglas W.Wilson,R.E.H.S. <br /> Program P ram Manager Tele hone: (209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> oq _� <br /> Laurie A.Cotulla,R.E.H.S. Fax: (209) 464-0138 Robert McClellon,RE.H.S. <br /> iProgram Manager Mark Barcellos,R.E.H.S. <br /> 1 RYDER INC MAR 0 3 2004 <br /> 1630 SOUTH CHURCH STREET SUITE 301 <br /> 1 MURFREESBORO TN 37130 <br /> RE: Ryder LC 1071 <br /> 1 3633 Duck Creek Drive <br /> Stockton, Ca. 95215 <br /> i San Joaquin County Environmental Health Department (EHD)has reviewed the <br /> analytical results of the soil samples taken from beneath the underground storage tank <br /> (UST) dispensers at the.above referenced address on November 14, 2003. These results <br /> 1 are contained in the Frey Environmental report dated February 5, 2003. <br /> This work was conducted to investigate the extent of contamination found in the areas of <br /> 1 dispensers 5, 8 and 9 on September 18,2003, during the underground storage tank <br /> product piping and fuel dispenser upgrade activities: In September 2003 the <br /> concentration of total petroleum hydrocarbons as diesel (TP 1 eof the area of dispenser 8 (D8) at 5 feet below surface grade (bsg) was 1300 mg/kg. The results <br /> investigation in November 2003 show that the contamination found in the areas of <br /> dispensers 5 and 9 was limited. However,the concentration of TPH-d in the area of D8 <br /> 1 increased to 2000 mg/kg at 7 feet bsg. Therefore,the lateral and vertical extent of <br /> contamination in this area requires further investigation. Submit a work plan to EHD for <br /> further investigation in the area of D8 by April 19, 2004. <br /> iContact Harlin Knoll at EHD/ Site Mitigation Unit for further information regarding this <br /> matter at(209) 468-3442. <br /> ' Donna Heran, REHS,Director <br /> Environmental Health Department <br /> 1 Harlin Knoll, Senior REHS Marg t Lagorio, HS <br /> Unit IV Supervisor <br /> ' c: Tony Hearld,A-Team Consulting, 94 Angeles Vista Circle, Sandia Park,NM 87047 <br /> Frey Environmental, 2817A Lafayette Ave.,Newport Beach, CA 92663 <br /> i - <br />