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r <br /> Wright <br /> Environmental <br /> i <br /> nErr:;�E <br /> n Services, Inc.n <br /> Construction ♦ Engineering ♦ Remediation <br /> APR 1 � 2003 <br /> April 7,2003 ENVIROVBE HEALTH <br /> Project No. 45DtRMITISERVICES <br /> City of Tracy <br /> 520 South Tracy Boulevard <br /> Tracy, California 95376 <br /> Attn.: Mr. Paul Verma <br /> Re: Soil and Groundwater Initial Site Assessment,Public Right_of-Way Near <br /> Delta Disposal, 99 Sixth Street, Tracy, CA <br /> PHS EHD Site Code#2183 <br /> Dear Mr. Verma, <br /> Wright Environmental Services, Inc. (Wright) has prepared this report on behalf of City of Tracy <br /> (property owner) for the Public right of way adjacent to the above referenced site. This work is <br /> in response to letter, dated May 6, 1998 from the San Joaquin Public Health Services <br /> Environmental Health Division (PHS EHD) for additional site assessment. This work is being <br /> done to address possible contaminants from an underground petroleum storage -tanks and to <br /> check for presence of MTBE and related fuel oxygenates and physical characteristics of soil in <br /> the area. <br /> Background <br /> Two underground petroleum storage tanks were removed in 1985 from a location that later, <br /> became a portio;8 �gallon <br /> oStreet when the road was realigned. -The two tanks (one 350-gallon <br /> diesel and one gasoline) locations were excavated in May 1990 and soil samples <br /> collected at the westend of the excavation at that time showed 18,000 parts per million (ppm) of <br /> Total petroleum Hydrocarbons as Diesel (TPHD). As a result of that information, PHS EHD <br /> requested additional site assessment. <br /> Field Methods <br /> Exploratory Borings <br /> Three exploratory borings were drilled at the locations in Sixth Street and adjacent sidewalk <br /> shown on Figure 1. Drilling permits were secured from PHS EHD, and a utility clearance was <br /> performed prior to doing the fieldwork. The boreholes were drilled with GeoProbe truck <br /> mounted drilling equipment. Boring locations were adjusted in the field due theproximity of <br /> i <br /> 67 E. 10th Street • Tracy, CA 95376 <br /> 209.833.0758 • Fax 209.832.5152 Pagel of 6 <br /> wright@inreach.com Lic. #651501 A-BHazMat . A <br /> websit http.//home.inreach.com/wright i� <br />