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_ _07 <br /> . . - <br /> _ Y <br /> - <br /> /VIITTELHAUSER <br /> Corporation - <br /> _ s_ � � —� � 2401 Crow Canyon:Road,Suite 100 _- <br /> `_ <br /> July 2, - 1991 <br /> T - - _ z <br /> - = <br /> Mr.- Harlan Knoll - <br /> San Joaquin County Pnblic Health=Services - may— _- <br /> Environmental HealthgDivi <br /> sion <br /> - — - — _ <br /> _ - — <br /> r <br /> P-:O �Box 2009. � <br /> Stockton, CA 95201iR <br /> _ _ <br /> e 4 _ <br /> - Subject = Workplan -for Soil Boring andgMonitori_ng Wel-1 - <br /> _ MET- <br /> Installation at UnocalTService-Station #6398 LL � <br /> fi =3788-TracyBoulevard, Tracy, California <br /> � <br /> _ _ -- _ <br /> - - - n <br /> �= DearMr:" Knoll -: �� = <br /> Mittelhauser Corporation E(Mittelhauser) is pleased-.--to-.- <br /> "presentthis workplan- for the installation ofnineso.il borings at_ <br /> pe�' the subject-site and` the conversion offour ofthese_borin-gs Intmo_ - <br /> �r <br /> =monitoring wel-is Asitemap�showing the proposed _locations is- <br /> - -attached. To -installethefsoil borkngs Mitt elhauser_will:perform <br /> a z- _ <br /> the following tasks <br /> Aa <br /> o regulatory c,00rdinat,ion;' <br /> o preparation of a health andsafety plan; <br /> - - - <br /> o—borinaat�nneElocations wth_ soilsampling, <br /> l-�� .710 monitoring well Installation in four borings, : <br /> omonitoring weliTa ve e-lopment, purging and sampling, <br /> sample-analysi-s, <br /> 4L _= o soil -cuttina = <br /> .and purge water_ disposal_ - <br /> -= ' Om P <br /> o _reportspreparation - — <br /> - - _ <br /> =_ <br /> _RR,h1ofm the tasks istdiscussed below <br /> v_ <br /> Regulatory Coordination <br /> _ - <br />�. Mrt€elhauserapersonnel w111 obtain -thenecessary`permzts <br /> f-rom�the SaryJoaqui_n�--County Department-�Rof�Environmental�Heal-t-ham` <br /> _ <br /> -prio Mto instal lationaof the soi-1 bor ngs and_notif.y Underground per' <br /> aService6Alert for identification£:of buriedlutilit} locations z <br /> Soil Boring I-nstallation - rte mss' <br /> Eight Soil,_borrngs will be drilled ;s ng truck-mounted <br /> :hollow `stem auger 'drl3ingRegnpment' - The-boreholes-rwilibe <br /> extended to a==totadepth_�'of .50 feetlor -until--groundwater'-is <br /> • ` encountered, whi ch_everzeoccursfirst " Soil samples will be <br /> 4 <br /> CHICAGO ;IL- - _ - SAN RA�`dGN CA - PORT.ARTF'UR.=TX <br /> _ . - .._..-11: ate. ��•. --,_-�- - ..-m.� ._ - --- �- , <br />