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i <br /> Mr Chuck Carmel <br /> i' March 17, 1993 <br /> Page 2 <br /> lie <br /> W = QxCx120x10"5 <br /> where <br /> W — Average amount of chemical discharged, lbs/day <br /> Q = Average flow rate, gpm <br /> C = Concentration, µg/1 <br /> 120 x 10-5 = (minutes/day x lbs/gallon)/1,000,000,000** <br /> W = 2 5 x 10-4xCfor Q = 21 gpm <br /> **Use 1,000,000 for determination of average lbs/day of TPH. <br /> The next monthly status letter will include the interval January 16, 1993, through <br /> February 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 /> St ven D. Misner Lawrence E. Phillips <br /> Protect Manager California Registered Geologist #3710 <br /> SDM LEP mrp <br /> Enclosure <br /> cc: Ms. 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 Caldwell 7452\C0RRESA7452-041,2 <br /> Consuktants <br />