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STATE OF CALIFORNIA GEORGE DEUKMEJIAN,Govemor
<br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD- •�"�`
<br /> CENTRAL VALLEY REGION IZ�
<br /> 3201 S STREET
<br /> SACRAMENTO,CALIFORNIA 95816-7090
<br /> PHONE: (916)445-0270
<br /> I�
<br /> 25 November 1986
<br /> ENFELTH
<br /> RMI /SERV CES
<br /> T
<br /> Mr. Darrell D. Scott
<br /> Laboratory Supervisor
<br /> City of Tracy
<br /> 3900 Holly Drive
<br /> Tracy, CA 95376
<br /> SLUDGE DISPOSAL AND TESTING
<br /> Thank you for preparing and sending me your sludge handling plan and schedule.
<br /> our Cut-off date for disposal of sludge at the Corral Hollow landfill , with
<br /> solids concentration of less than 50%, is February 1987. At a meeting on
<br /> 17 November 1986, William Silva stated that the new drying beds at the sewage
<br /> treatment plant may be operational before February. If they are, immediately dis-
<br /> continue disposal of sludge at the landfill until you can get the solids content
<br /> up to at lest 50%.
<br /> Title 23 of the California Administrative Code (CAC) , Chapter 3, Subchapter 15,
<br /> requires that dischargers be responsible for an accurate characterization of their
<br /> waste. The reason for this is to determine if the waste is hazardous, designated,
<br /> or inert. These classifications are crucial in deciding what type of waste
<br /> management unit the waste can be deposited in. A characterization of the sludge
<br /> solids must be completed for their continued and future disposal at the Corral
<br /> Hollow landfill . A complete characterization should include the following tests,
<br /> performed by a California certified lab, on a representative sample:
<br /> 1. Waste Extraction Test (WET) , from Title 23, CAC, Section 66700, ignore the
<br /> first sentence of Section 66700(b) (see enclosure) . Since the sludge may
<br /> be disposed of in an acidic environment, the WET should be performed using the
<br /> standard citrate buffer solution. Analyze the extract for the following
<br /> metals via an Inductively Coupled Plasma (ICP) scan or Atomic Absorption
<br /> (AA) : Sb, As, Ba, Be, Cd, Cr (total) , Co, Cu, Pb, Hg, Mo, Ni, Se, Ag, T1 , V,
<br /> Zn. Due to unreliable detection of As, Hg, and Se by the ICP methodology,
<br /> these elements should be done by AA.
<br /> 2. WET with deionized water. A second sample should be extracted using
<br /> deionized water and analyzed for the following: Cr ( IV) , pH, endrin, lindane,
<br /> methoxychlor, toxaphene, 2,4-Dichlorophenoxyacetic Acid, 2,4,5-Trichloro-
<br /> phenoxypropionic Acid, PCB, total nitrogen, total dissolved solids and
<br /> fluoride. Additional substances that may be of interest for future planning
<br /> include: aldrin, chlordane, DDT, DDE, DDD, Dieldrin, Dioxin (2,3,7,8-TCDD) ,
<br />
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