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CAIVIBRIA <br /> August 17, 1999 <br /> Mr Ronald Rowe <br /> San Joaquin County Public Health Services <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Environmental Health Division 304 E Weber Ave Third Floor <br /> P O Box 388 P. 4 Box 388, Stockton CA 95201-0388 <br /> Stockton, California 95201 Approved 2' <br /> Denied 0 <br /> Re Site Investigation Work Plan a1/Conditions 5-EiF_ c,-"ww-^kS dtaAL.'-s <br /> Shell-branded Service Station Date q to 4tl b <br /> 620 W Charter Way Y �u'� <br /> Stockton, California l• Qp� bv told,« La.o5.# <br /> Incident Number 98996187 CoNTiuuour5L, 1 G NLO-D O+uE riwST <br /> SAP Code 136147 605 i}'STAUL&X� t11jZ Ya+ S11,11C e1t511~�N <br /> SJCPHS Code 1058124 e9ap``M, u^' - oma' �•�s'S �� <br /> Z t l�inz�c. QPTA su44��rr, <br /> Dear Mr Rowe '.3A-TM P W'ft i` PgA5 <br /> m CleAlkEb .b,iE cems} rh'6 <br /> w0fw_ off-lire wig 13E acq�siizii01 . <br /> As you requested, Cambria Environmental Technology, Inc (Cambria) is submitting this Site <br /> Investigation Work Plan to define the extent of hydrocarbons in soil and groundwater at the site <br /> referenced above This work is being conducted on behalf Equiva Services LLC Cambria <br /> originally submitted a work plan in November 24, 1997, however, we did not receive written <br /> authorization to proceed and did not do so Presented below are the site background including <br /> current site conditions and our proposed scope of work to complete this investigation <br /> SITE BACKGROUND <br /> February 1989 Soil Borings In February 1989, Delta Environmental Consultants (Delta) <br /> drilled soil borings SB-I through SB-8 to assess site conditions prior to underground storage <br /> tank removal and replacement activities (Figure 1) <br /> November 1989 Tank Removal In November 1989, four underground storage tanks were <br /> excavated and removed Soil samples were collected from former tank and product line trench <br /> excavations <br /> Oakland CA <br /> Sonoma CA December 1989 Well Installation- Between December 1989 and January 1990, Delta installed <br /> Portland OR groundwater monitoring wells MW-1 through MW-7 Underground piping was installed to <br /> Seattle WA <br /> wells MW-2, MW-3, MW-4, MW-5, and MW-7 for future remediation Two additional ground <br /> Cambria water monitoring wells (MW-8 and MW-9) were installed in March 1990 <br /> Environmental <br /> Technology, Inc <br />&144 65th Street <br /> Suite B <br /> Oakland CA 94608 <br /> Tel (510) 420-0700 <br /> Fax (510) 420-9170 <br /> rva\ k`tA <br />