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Langston IsMarke'' 15611. M;aee, I tUhruji, (.'alejorn hi December 12, 1995 <br /> Phase II L'ateratl& Vertn al 1 Pe=at(J'Se::onil Page. b <br /> Grounthiatter.?q,effer t Moik F'tan <br /> not introduce ii-into thew er ^a1 ►, o. `1 fl h it Telectrical <br /> at.. u� �, a e a, bailei he pIl temperature, and <br /> conductivity of the water will be monitored as the well is evacuated These parameters will tie <br /> noted on a field log Instruments calibrated to known standards will be used to monitor these <br /> parameters At least five well volume:, will be evacuated from each well, and more, if <br /> necessary, until the above parameters have stabilized Wells that are de-watered before <br /> evacuation of five well Yao►uines has been accomphshed will be sampled upon eighty percent <br /> recovery of the initial water level Tne wells or other sampling Points will be sampled in order <br /> of the least to the most containinated, as best known or estimated The samples will be <br /> pumped from a stainless steel bladder pump or carefully poured from a Teflon bailer into clean <br /> glass vials with Teflon-lined screw caps and half gallon plastic containers provided by the <br /> laboratory Care will be taken to ensure that no air space exists in the gals by inverting to <br /> check for bubbles and -c-sampling if necessan, <br /> The samples will be analyzed or extracted within 14 days according to their EPA, methods <br /> Water samples fo, analysis will be analyzed by EPA method 602 for BTX&E <br /> compounds and method 5030 L UF I for gasoline rapge hydi ocarbens rhe murir;ium <br /> Idetection limits used fo, each anal)rte will be 0 5 pg/l, for BTX&F; and 50 µg/L fur <br /> gasoline Analyses yrA he conducted by California Laborator} Seivices, a State-certified <br /> laboratory in Rangy ho Cordo�,a, California <br /> �r <br /> Prepay ed by <br /> 3 <br /> * 30.1"x` ! <br /> W H Fox, 11, itlrA ?F OF CALt� <br /> Registered Environinuotal assessoi t 00620 <br /> G9Q4 <br /> - ------ ----------- -- ¢3' �DLA <br /> le eLano, t# 223 3 9 Q NO �C <br /> California Registered Civil 11, �n-e i 22 339 <br /> EXP 7 <br /> ��OF CAuuF�4 <br />