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NOV-16-2001 12: 15 P.02. 20 <br /> Advance! <br /> rr <br /> GeoEnvironmentaL Inc. Y <br /> 10 September 2001 <br /> AG&NC Project Na. 01-0861 <br /> Mr_ Moss Atkinson <br /> Central Valley Regional Water Quality Control Board <br /> 3443 Routier.Road, Suite A <br /> Sacraanento,CA 95827-3003 <br /> Subject: Concrete Waste Tile Sampling Report <br /> FTG CONSTRUCTION MATERIALS,INC. <br /> 925-West Anderson Street,Stockton, California <br /> Dear Mr, Atkinson- <br /> In accordance with your request,Admvtced GebE viramnental,Inc, (AGE)has prepared Concrete <br /> Waft Tile SMplirrg,Reporrrelating to the materials located at 925 West Anderson Street,Stockton, <br /> California(the site). The location of the site is illustrated an Figure 1. A map of the concrete wa <br /> tile stockpile, adapted from a Kjeldsen, Sinnock & Neudeck topste <br /> es aphic map, is illustrated.on <br /> Figure 2. <br /> I.Q. BACKGROUND AND SCOPE OF WORD <br /> ,AGE has been intbrmeui that approximately 19,676 cubic yards of waste tile material andlor broken <br /> concrete tic were transported to the site from concrete roof tile m1 nute wing facilities in Lathrop <br /> and F+rewh Camp, California. According to letters from the Central Valley ReVnnel Water Quality <br /> Control Board(CVRWQCB)dated 16 October 2000 and 18 January 2001, satuplM ofthe waste the <br /> material collected from the MonierLifstile Lathrop and Drench Camp facilites contained significant <br /> concentrations of total petroleum hydrocarbons quantified as diesel CTF`l3-d), Dl-WET TPH-d <br /> (Waste Extraction Test utilizing deionized water,referred to below.as DI-leachable)and Chromium <br /> V1(hexavalent chromium). Copies of the CVRWQCB letters are in Appendix A. <br /> According to the CVRWQb letter dated 16 October 2000,the maximum TPH-d reported in samples <br /> collected by MonierLifstile was 17,000 milligrams per kilogram (mg/kg); the average TPH-d was, <br /> 1,100 mg/kg. The maximum DI-leachable TPH.d in the MonierLifetile samples'as 31.0 mg/L;the <br /> average DI-Leachable TPA-d was 9.5 mg1L. 'According to Thinking Water:Maximum Contaminant <br /> Levels and Public ,Health Goals, found at the internet 'website <br /> IuVJ v+ww.dhg,mhvrnet.gw/orgfps/ddWenJchM GalalPHGsIMCLcomparison htm thePllGfartotal <br /> chmmium is 0.0025 rng/L and the MCL is 0.05 mgt, <br /> ATTACHMENT 1 ... <br /> 837 s6w Road.Stockton,C.%Hfornka Y>,zt> <br /> Telephone(?.09)467-1006 FAX(209)467-1118 <br />