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Mr Chuck Carmel <br /> May 27. 1993 <br /> Page 2 <br /> W = QxCx (120x 10-5) <br /> where <br /> W = Average amount of chemical discharged, lbs/day <br /> Q = Average flow rate, gpm <br /> C = Concentration pg/l <br /> 120 x 10-5 = (minutes/day x lbs/gallon)/1,000,000,000** <br /> Thus, <br /> W = 3 6 x 10-5 x C for Q = 3 0 gpm <br /> **Use 1,000 000 for determination of average lbs/day of TPH <br /> The next monthly status letter will include the interval March 16 1993, through <br /> Apnl 15, 1993 <br /> Please call Mr Steve Misner at (916) 4440123 if you have any questions regarding the <br /> groundwater extraction system at ARCO Station 2133 <br /> . Sincerely, <br /> BROWN AND CALDWELL CONSULTANTS <br /> c � Q <br /> teven D Misner awrence E Phillips <br /> Protect Manager California Registered Geologist #3710 <br /> SDM LEP orb <br /> Enclosure <br /> cc vMs. Mary Meays, San Joaquin County <br /> Ms Elizabeth Thayer, Regional Water Quality Control Board <br /> Mr Frank Tucker, City of Stockton <br /> Ms Mindy Wright, Brown and Caldwell Consultants <br /> Brown and Caldweil 7452\coRR$sP.7452 as L a <br /> Consultants <br />