§ 20360. SWRCB--Subsurface Barriers. (C15: § 2545)
27 CA ADC § 20360Barclays Official California Code of Regulations
Barclays California Code of Regulations
Title 27. Environmental Protection
Division 2. Solid Waste (Refs & Annos)
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
27 CCR § 20360
§ 20360. SWRCB--Subsurface Barriers. (C15: § 2545)
(a) Subsurface barriers are cutoff walls or grout curtains which are used in conjunction with natural geologic materials to assure that lateral hydraulic conductivity standards specified in Article 3 of this subchapter are satisfied. Paragraphs (b) and (c) specify conditions under which cutoff walls and grout curtains, respectively, are used.
(1) Cutoff walls are required at Class II Units where there is potential for lateral movement of fluid, including waste or leachate, and the hydraulic conductivity of natural geologic materials is used for waste containment in lieu of a liner. Cutoff walls shall be installed at Class III landfills as required by the RWQCB.
(5) Cutoff walls shall have fluid collection systems installed upgradient of the structure. The systems shall be designed, constructed, operated, and maintained to prevent the buildup of hydraulic head against the structure. The collection system shall be inspected regularly, and accumulated fluid shall be removed.
(1) Grout curtains may be used as needed to prevent lateral waste movement through fractures in natural geologic materials that otherwise satisfy applicable hydraulic conductivity requirements in Article 3 of this Subchapter. Only fractures that are at or near the surface and are of limited vertical extent may be grouted.
Credits
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).
This database is current through 4/26/24 Register 2024, No. 17.
Cal. Admin. Code tit. 27, § 20360, 27 CA ADC § 20360
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