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FROM : RAMAGE Company PHONE NO 916 354 3250 Tun, 05 1998 03 35PM P2 <br /> RAMAGE <br /> ENVIRONMENTAL Sacramerito Offlte <br /> -imirrr,rrr.rMW.. h, 9,4un.w <br /> . 14670 Cantova Vday,Suite 200 <br /> Rancho Murleta, CA 9566.,1° <br /> Tel (0 16) 354-32.50 <br /> June S, 1998 x (916) 354-3251 <br /> Mr.I l irlan Knoll,Sr 1t.E.H,S, VIA FACSIMILE AND REGULAR MAIL <br /> Scan Joaquin C;aunty PHSIEHll <br /> 304 East Weber Avenue,3`0 Floor <br /> Stockton,CA 95201-4388 <br /> Re- AddeWum to PARICAP Submittal <br /> San Joaquin Catholic Cemetery,Stockton, California <br /> USTCF Claint#1092 <br /> Dear Mr K.noll- <br /> It was a pleasure to speak with you this week mggrding your review of Ramago Environmental's Problem <br /> Assessmew Repmt mad(:ormetive Action Ply(PARICAP).dated May 20, 1995. <br /> Tris CAP portion of the PARICAP outlined pr+opmed methods ibr the implementation of sail vapor <br /> extraction(SVE)via existing wells VW-1, VW-2, VW-3 and VW-4. The Wohnical basis for the SVE <br /> design criteriu was data obtained fr m a previously performed vapor extraction pilot test. In addition,the <br /> CAP portion ofthe PARICAP also proposed tho design,permitting and implomontation lask4 necessary <br /> to imitate SVE and removo sown goolino hydrocarbons from beneath the subject site investigation <br /> area. <br /> In msponw to your comn>ents,this addendum docuinont addresses the following concerns- <br /> . A comparison of other remedial technologies on a performance and cost basis. <br /> • Tho integration of air spargtng into the proposed CAP <br /> REMEDIAL TECHNOLOGY COMPARISON <br /> This portion of the addendum briefly describes other remedial tecbnologics that were evaluated prior to <br /> selecting SVE as a hydrocarbon source removal technique for the subject site <br /> pjtmt Bleavatlan <br /> The removal of soil impacted with gw-ilhio hydrocarbons would require extensiveâ–ºexcavation adjacent to <br /> the musoleuin building;to a ininimum depth of approximately 40 feet below ground surface(legs) White a <br /> detailed cost estimMe was not developed for thio tjAjon,ai.remedial excaus6cm program would require 1) <br /> the installation of at shoring system,2)excavation of approximately 5,000 e-ubic Yar&(cy)of soil beyond <br /> and beneath the mausoleum structure,3)on-site treatment of excavated soil(or offsite disposal)and 4) <br /> becki'ill and compaction of the excavation Ramage Environmental cat+rnatos that such a progmm would <br /> emt approximately$104-$120Vey or about$500,00-$600,000 For obvious ecOnOm'c masniis.,this ophon <br /> was not given fit0cr canridwataen:. <br />