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axe�. r —�— <br /> SFNf BY=EMCON ���JY' ' ram,"7-10-ZI6 2=31P11A �'rMON SACRA14�N1'0=•� r� ��° :# 211`C -, t s <br /> t j, y'Ss�, 7 1 P.<"by 4i LSc :k wyy 5 '>A++" y t 3 er t <br /> _a¢ �+ <br /> tE's i439,1dOrth M_o abetBpulavp d i 5oaarr,ent p"Cdlfoirtl0 45694-19A3.(916)0U4= Fax(Ci 6?9Z�9941 A s <br /> 'r k zra}�yr-` 7 m <br /> is��r,�p � '�/ r <br /> 1 <br /> r <br /> „1 '�✓a ' w e � t "7jY� <br /> Vy, yyy �Fr� �(� <br /> rM1P�Vposai 1 90-25 <br /> t y r <br /> Mr.La*16itt H.Beasley a <br /> Apache Plastic,LP. <br /> 2050 E.Fiemont Strcet <br /> Stockton,CaMbnua 95205 <br /> I P <br /> Re; Proposal to Dnll Confirmation Soil Borings,Perfonn a Risk-Bared Corrective <br /> Action Analysts,and Prepare a Closure Report for Apache Plastic L P.,Lcx,ated at <br /> 2050 East Fremont Street, Stockton. Cafornia <br /> Dear Mr.Beasley: <br /> EMCON has prepared this scope of work and coat estarrnate to drill confirmatton soil r <br /> borings, perform i nsk-based cmective action (RSCA) analysis, and prepare a closure' <br /> report fol Apache Piasters L P. Whty to pursue no further ac holt status for the above- <br /> referenced fac.�ility.The scope of work will consist of performing-a file_review at the local <br /> ' oversight Lgeirc.y and at the Department of Water Resources (DWR), drilling two soil <br /> borings,pi+eparing a PWCAs analysis,and pmvaring'a site closure report. <br /> The purpose of the work is to obtain historical analytical data for the site to ftM San Joaquin <br /> County' Public Health Services (SICPHS) and Regional water Quality Control Board <br /> (RWQCB)closure reqummxnts and identdy%encitive receptors within a 1/2rmile radius;obtain <br /> addidonaI chamcal and physical properties of soil beneath the site to aid in the RSCA analysis; <br /> assess potential hurrm I=b risks and irnp xtc to groundwater quality associated with <br /> petroleum hydrocarbons detected m son at a site and to denim site-spectftc RBCA target levels <br /> for selcc`tad chemicals of potential conoern,if needed;and stun nmrize the result of the work in a <br /> comprehensive closure report nques-tug no further sawn. <br /> t _ <br /> RBCA target levels are tused on the procecdon of human health and groundwater <br /> the ,ties that hnvted resaunxs are avatlible for cleanup of Sims throughout the stater this <br /> examtse, groundwater is not assumed to be used for beneFxaai purposes. A stte-specific <br /> RBCA evaluation would allow fOr the development of target cleanup levels that mum <br /> C accurately reflect potential impacts to human health and groundwater quality beneath the <br /> site. <br /> i <br /> i <br /> SAc'W'U'iiUl'96�1'960702SAS.VA�III,_ � � <br /> a <br />