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<br /> r "'M ❑ri iii I�nJw du 3N"11 ih1ai}t'P""
<br /> li,ssn rn k }1 STI ulny
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<br /> (1n Au,rl,t 22 199111rLe 1ndropunLl, hormgs 11Lr,- drilled .tt 111L ,rte t,.tsn1111L odors 1,erL noted In
<br /> r LaLh horLIWIL I tbOl,1torl 111,11\SLI, ind1LatLd thL prLscni.e tri 1 P11-(r ind 13 1 1 X in thL ,011 and
<br /> grotl)ldwatLI Sa111pIL, ural\,iLd from caLII hOILIMIL Based 011 IhL rLsultS of thL Angtl,t 1995
<br /> In1L,tl'-Iati011 ( oridol rLulnlmLndLd addltlonal In1LStli,ation hL LondtiLled to L1alttatL tllt- LvtLnt 01 thL
<br /> r IiNdroLaibon pIu111L Ull 79 1996 fl%L (tLi}ptohL horLh01Ls werL ln,talled at thL ,ItL I hL rLstllts
<br /> 01 111L Iahor,itoi\ anal u, lndlLatLd that L ILN nLd LonLL11tratl0t15 of 1 Pi I-(1 111 TX and InLthN I ti-rtlary
<br /> hut%I LthLr (M I HI ) 11LrL pIL,Lnt rn sod and '_,rourldwatLr SantplLs Lo]ILLtLd trorn thL northern portion 01
<br /> r 111L ,It, ,1111 111,11 ttlrtllLi' I111L,tl'1dtl0l1 was IILLL,sat,, to L1alLlatL thL L\lLllt of soil and groundwatLr
<br /> L0TltatlllilatloI1
<br /> BaSLd on thL rL,ults of t1iL (tcoprohL II1vLstigation C undor rLLOInInLnded that monitor wLkS he 111SUILd
<br /> it thL SitL to nrlLstigatL and monitor thL lateral LxtLnt of thL gasohnL and d1LSLl p1umL ul the
<br /> graundwatLI (hl '�,cptLmber 10 1997, ( ondor installed four monitor wells at thL SrtL 111L Repoi t -
<br /> tcicdmonul 5011 e110 (,r011]7 1,1Utei Invevigution dated Dcccmber 11, 1997 was prepared by ( ondor to
<br /> rdLscribe thL investigation Iwilts
<br /> 1-1'11-6 13TI X Loilstrtuents M rBI tertiary butanol and tertiary amyi methyl ether (TANMI ) were
<br /> r dLtLLted Ill SoniL 01 thL ,oil and groundwater ',dillples LO11CLtLd during the investigation (groundwater
<br /> L1Lvatton data lndicatLd that groundwater flow at thL ,itc was probably Lontrollcd by the vLr1 activL
<br /> island dtalna_aL puinpina system adlaLLnt to tine sitL I11L ahovL ILferenLed report rLLOIlnlriLndLd
<br /> quarterh groundwater monitoring surtaLe watLr sampling and Risk BasLd ( orrective Action (RB( A) to
<br /> furthLr LharactLrtiL thL site and to LvaluatL options for remediation or sitL L1o,urL
<br /> r In a tLILphonL Loll�crsation on MarLh 23 1998 Mr Ronald Rowe of the San Joaquin ( ount} Public
<br /> Health nlrronmental Health Department (PHYI 111)) IndicatLd that based oil his ILvtew of the
<br /> ILprnt datLd 1)tccmhLr 1 1 1997 (Ieterent ed abole) he was requesting that quarterly groundwater
<br /> monitoring. Lontrnue at the Site FurthermorL hL requested that a work plan be prepared for Londucting
<br /> r quarterly ,urtacc watLr sampling and additional investigation of the gasoline oxygenate/additive plume
<br /> to thL Last of monitor wLll MW-2 Condor subsequently prepared the Work Plan lehlitional 'Iod and
<br /> r Grollf7 ditutcf Wales SLunphn(f dated May 27 1998 In a fax dated lune 1 1998
<br /> MI Rewe approved thL work plan w ith the stipulation that a work plan addendum be prepared dLSLribing
<br /> Installation of additional borings to those proposLd in the work plan and grab Sampling of the HLrman &
<br /> Helen s Marina drinking water source ( ondor subsequently prLpared the Work Plan Addendum dated
<br /> IJuly 9 1998 In a fax dated July 27, 1998, Mi Rowe approved the work plan addendum adding that both
<br /> the facility pre-treated drinking water and the past-treatment water should be sampled and analyzed by
<br /> appropriatL, methods
<br /> rOn OctobLr 1 1998 a ( ondor rept escntativL was on site to Londuct quarterly surface water sampling
<br /> aLtivities and LoI]Lct a sample of the marina s pre-tieated and treated drinking water from the facility s
<br /> I water treatment system From December 1998 through September 2000, Condor conducted quarterly
<br /> groundwatLr and suitace water sampling
<br /> In a letter dated JUIlL 30 2000 Mr Rowe directed the submittal of a work plain amendment to modify the,
<br /> • ,cope of work pioposed in the above referenced work plan and work plan addendum According to Mr
<br /> Rowe thL Wolk plan amendment was to describe vertical characterization of the potential MTBE plume
<br /> and he submitted by August l 2000 1n addition Mr Rowe required that a report of the work be
<br /> I �
<br /> t� CONDOR
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