27 CA ADC § 20330


      27 CCR s 20330

      Cal. Admin. Code tit. 27, s 20330


      CALIFORNIA CODE OF REGULATIONS
      TITLE 27. ENVIRONMENTAL PROTECTION
      DIVISION 2. SOLID WASTE
      SUBDIVISION 1. CONSOLIDATED REGULATIONS FOR TREATMENT, STORAGE, PROCESSING
      OR DISPOSAL OF SOLID WASTE
      CHAPTER 3. CRITERIA FOR ALL WASTE MANAGEMENT UNITS, FACILITIES, AND 
      DISPOSAL
      SITES
      SUBCHAPTER 2. SITING AND DESIGN
      ARTICLE 4. SWRCB - WASTE MANAGEMENT UNIT CONSTRUCTION STANDARDS
      This database is current through 04/21/06, Register 2006, No. 16. 

      s 20330. SWRCB - Liners. (C15: s2542)

      (a) Performance Standard -Liners shall be designed and constructed to 
      contain the fluid, including landfill gas, waste, and leachate, as 
      required by Article 3 of this subchapter (s20240 et seq., and s20310).

      (b) Clay Liners -Clay liners for a Class II Unit shall be a minimum of 2 
      feet thick and shall be installed at a relative compaction of at least 90 
      percent. For a Class III landfill, a clay liner, if required, shall be a 
      minimum of 1- foot thick and shall be installed at a relative compaction 
      of at least 90 percent. For MSW landfills subject to the liner 
      requirements in the federal MSW regulations of 40CFR258, after the Federal 
      Deadline for liners at that Unit, the requirements of this paragraph are 
      superseded by those of SWRCB Resolution No. 93-62 for all portions of the 
      Unit outside the Existing Footprint.

      (c) FMLs -Flexible membrane liners ( "FMLs", or synthetic liners) shall 
      have a minimum thickness of 40 mils (i.e., 0.040 "). For an MSW landfill 
      subject to the liner requirements in the federal MSW regulations 
      (40CFR258), after the Federal Deadline for liners at that Unit, the 
      requirements of this paragraph are superseded by those of SWRCB Resolution 
      No. 93-62 for all portions of the Unit outside the Existing Footprint.

      (d) Lined Area -Liners shall be installed to cover all natural geologic 
      materials (at the Unit) that are likely to be in contact with waste 
      (including landfill gas or leachate).

      (e) S.I. With Replaceable Liner -A Class II surface impoundment may have a 
      single clay liner with a hydraulic conductivity of 1x10 [FN-6] cm/sec 
      (i.e., 1 foot/year) or less if the liner is removed or replaced before the 
      last 25 percent (minimum 1 foot thickness) of the liner is penetrated by 
      fluid, including waste or leachate. The method used to determine seepage 
      velocity shall be included with the calculations of liner penetration.


      


      Note: Authority cited: Section 1058, Water Code. Reference: Sections 13172 
      and 13360, Water Code; and Section 43103, Public Resources Code. 


       HISTORY 
         
      1. New section filed 6-18-97; operative 7-18-97 (Register 97, No. 25).
      27 CA ADC s 20330

      END OF DOCUMENT

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