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EDWARD E.TUTTLE* DIANN H.KIM T U T T L E & TAYLOR EDWARD W TUTTLE <br /> ROBERT G.TAYLOR' MARDI J.ASPINWALL (1891-1950) <br /> MERLIN W.CALL BETH S.DORRIS A LAW CORPORATION <br /> PATRICK L SHREVE* ROBIN D.WIENER FORTIETH FLOOR <br /> MARK SCHAFFER RICHARD S.WENTZ <br /> OF COUNSEL <br /> JOSEPH R,AUSTIN ANTHONY L PRESS 355 SOUTH GRAND AVENUE <br /> C.DAVID ANDERSON' JENNIFER A.MILLER JULIAN B.HERON,JR.— <br /> ALAN E FRIEDMAN KATHERINE C.SHEEHAN LOS ANGELES, CALIFORNIA 90071-3101 BONNIE SUN <br /> TIMI ANTON HALLEM PAMELA G.BOTHWELL CHRISTOPHER J HUNT <br /> MERRICK J.BOBS SUSAN M.WALKER TELEPHONE:(213)683-0600 <br /> CHARLES L WOLTMANN' JEFFREYO WEXLER JERRY W KENNEDY" <br /> MARJORIE S,STEINBERG SHARON A.FARKAS TELECOPIER:(213)683-0225 <br /> O OUGU+5 W BECK GREGORY S.KOLTUN <br /> MARK A.BORENSTEIN' LESLIE E.WALLIS TUTTLE 6 TAYLOR <br /> NANCY E.HOWARD ALF W.BRANDT* <br /> MARC L.BROWN CHARLES WEINSTEIN 1025 THOMAS JEFFERSON STREET,N.W <br /> MICHAEL H,BIERMAN NICOLAS H.MILLER WASHINGTON,D 20001 <br /> SUSAN L.HOFFMAN KATHLEEN M.WOHN <br /> 202)392-000 <br /> JEFFREY M.HAMERLING ROSARIO M.HERRERA September 30, 1991 <br /> FRANK E.MELTON JULIO A.THOMPSON <br /> DAVID B,BABBE JOHN R.DENT <br /> GORDON A.GOLDSMITH AMY E.HOYT TUTTLE&TAYLOR <br /> JAMES R O LSON' _ f,.N .....q - A UW CORPORATION <br /> 6 R " yyy999 33 NEW MONTGOMERY TOWER <br /> tiIl/• � Y <br /> NINETEENTH <br /> MEMBER C^LIFORNA <br /> wEMBEROSTRICT OR COVue A BAR--1Y SAN FRANCISCO,CA 94105-9781 <br /> 41 0 <br /> 59181OCOLUMBIA eARs OCT 0 2 1991 <br /> 1415)9511300 <br /> ENVIRONMENTAL HEALTH WRITERS DIRECT DIAL NUMBER: <br /> PERMIT/SERVICES <br /> (213) 683-0201 <br /> FEDERAL EXPRESS <br /> Diane Hinsin, REHS Supervisor <br /> Public Health Services <br /> San Joaquin County <br /> Post Office Box 2009 <br /> 1601 East Hazelton Avenue <br /> Stockton, California 95201 <br /> Re: Diamond Walnut Growers , Inc . ("Diamond Walnut" ) ; <br /> Underground Tanks at Site 1781 <br /> Dear Ms . Hinsin: <br /> Diamond Walnut is diligently proceeding with development <br /> of a Problem Assessment Report for the Site. Recent sampling, <br /> however, has shed new light on the extent of contaminant levels in <br /> the groundwater. <br /> As you recall, your main concern at the Site, as <br /> indicated in your letter dated July 27, 1991, has been the level <br /> of soluble chromium and hexavalent chromium in the groundwater <br /> prior sampling from monitoring well number 3 in the Phase II <br /> Investigation indicated levels in excess of maximum contamination <br /> levels for these substances . <br /> New sampling from the wells at the Site now indicate much <br /> lower levels of chromium and hexavalent chromium in the <br /> groundwater . The levels now approximate DHS-MCL levels, as shown <br /> in the enclosed report . <br /> In light of this development, Diamond Walnut believes the <br /> Site should be reevaluated and would like to discuss this matter <br /> further with you. <br />