Laserfiche WebLink
IILnnin& iiLful , tiilrun SCL011d Q11l ,r 1--000 (rinemdw firer M(miroring <br /> July 11 _'000 <br /> P IVL 2 <br /> SUII [Illd {r)'!71l11[hl(1fN7 hll c'S!!Sr[lt1UIT dated i)L.LLmbLr 1 1 1997 was prepared by ( ondor to (ILSCr1bC the <br /> inrL,tl�ation rc,uli, <br /> I-PI 1-(I B i ] \If I R]_ tLrnary butanol arid tLrtiaiN amyl nictliyl ether ( I AAIII ) wLIL dLteLtLd in <br /> ,oine .it the. S,)II and groundwater sarnPIC, Lol[eLted during the Investigation (lroundwatei elevation data <br /> indrLatLd that ­ruuHdwatLr Ilovv at thL ,ite wati probably t«nirolled by thL very aLtive island dralnauL pumping <br /> ,y,tem adlaLLnt to the ,itc ]he above referenced report recommended quarterly groundwater monitoring, <br /> surtaLL tk ALI 5alnphnf, and Risk Based C of rLLt1VL ' LIIon (RB( ^) to further ctiaraLterize the ,ite and to <br /> LvaluatL -siphon, for remediation or ,Itc L1o,urL <br /> In a WILphoriL LonrLr,ation on MarLh 23 1998 tilr Ronald Rowe 01 thL San Joaquin ( aunty 1111bliL f3Lalth <br /> ")LrvILLSJI nvironmLntal Health Department (PIIS/I IID) Indicated that ba,Ld oil his rLVICw of the report datLd <br /> DeLLmbLr I 1 1997 0eterL11Led abovL) hL was requesting that quartLrly groundwater monitoring Lontinue at the <br /> ,rte 1 urthLrmorL hL ILque,tLd that a work pian hL prLparcd for LonduLting quarterly surface watLr -sampling <br />' and additional in%LStigatuni of the ga,ollne oxy i;Lnatc/additive plumL to tine east of monitor well MW-2 ( ondor <br /> subsequently prepared t1nL Work Plaii 4c.0i (Mil Sud and (.roundivaler Invcstlgation/S'urfm e Wutei Sampling <br /> dated blav 27 1998 In a fax dated June 1, 1998 Mr Rowe approved the work plan with the stipulation that a <br /> work plan addendum bL prLpared describing installation of additional borings to those proposed in the work plan <br /> and -tab sampling. of the llcrman &. Helen', Marina drinking water source C ondor subsequently prepared the <br /> Work Plun Iddentlum dated July 9, 1998 In a fax dated July 27, 1998 Mr Rowe approved the work plan <br /> addendum adding that both the facility pre-treated drinking water and the post-treatment water should be <br /> SamplLd and analy/Ld by appropriate methods <br /> On ()Ltoher 1 1998 a C ondor represcntativL vas on ,itL to Lcmduct quartcrl} surface water sampling activities <br /> and Lul[Le.t a ,a]-np[L of thL marina s prL-treated and trLatLd drinking water from thL tM Ility , watLr matinent <br /> system From DLLCrnbLr 1998 through March 2000 C ondor conducted quartLrly groundwater and surface water <br /> sampling <br /> In a letter dated June, 30 2000, Mr Rowe directed the submittal of a work plan amendment to modify the scope <br /> I of work propOsLd in the above referenced work plan and work plan addendum According to Mr Rowe, the <br /> work plan amendment was to describe vertical LharaLterization of the potential MTBF plume and be submitted <br /> by August l 2000 In addition Mr Rowe requirt d that a rLport of the work be submitted by September I, 2000 <br /> Condor ,ubsegULI1tly prepared the status Repoi t untl Itldendum to the Work Plan, dated July 24 2000 Mr <br /> Rowe approved the work plan amendmLnt in a tax dated August 3, 2000 In a telephone conversation with Mr <br /> Rowe on August 3, 2000, ( ondor requested that the submittal date for the report of findings be extended to <br /> October 6 2000 Mr Rowe verbally concurred with the extension and requested that Condor prepare a fetter to <br /> document the .onversation Condor followed up with a letter dated August 3, 2000 `t he installation and <br /> Sampling of the soil borings described by the Work Plan, Work Plan Addendum, and Work Plan Amendment is <br /> pending ieceipt of site access authorization trom off-site property owners Comprehensive site background <br /> information is included in Appendix 13 <br /> 3 SECOND QUARTER,2000, GROUNDWATER MONITORING <br /> 31 FIELD 'METHODOLOGY <br /> On lune 21 2000, a Condor reprLsLntative was on site to conduct quarterly groundwater monitoring activities <br /> The monitoiing activities inLluded measurement of water levels in the site monitor wells and at surface water <br /> measurement stations and the L011ection of gioundwater samples train the monitor wells All field equipment <br /> was decontaminated in the field with a solution of laboratory-grade, non-phosphate detergent and de-Ionized <br /> watLr and rinsed with de-ionized water prior to use in each well All field instruments were calibrated to the <br /> �� CONDOR <br />