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§ 20937. CIWMB - Reporting and Control of Excessive Gas Concentrations.


Barclays Official California Code of Regulations Currentness
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 4. Criteria for Landfills and Disposal Sites
Article 6. Gas Monitoring and Control at Active and Closed Disposal Sites (Refs & Annos)
27 CCR § 20937
§ 20937. CIWMB - Reporting and Control of Excessive Gas Concentrations.
(a) When the results of landfill gas monitoring indicate concentrations of methane or trace gases in excess of the compliance requirements specified in §20921(a), the operator shall:
(1) Immediately take all steps necessary to protect public health and safety and the environment and notify the EA by telephone or electronic means.
(2) Within seven (7) days of detection of excessive landfill gas concentrations,
(A) Verify validity of results by reviewing the following:
(i) probe readings;
(ii) possible liquid interference;
(iii) control well influence; and
(iv) barometric pressure effects.
(B) place in the operating record a description of and submit a letter to the EA that describes:
(i) the levels of methane and trace gas detected;
(ii) a brief description of the nature and extent of the problem based on information currently available;
(iii) the steps the operator has taken to protect public health and safety and the environment; and
(iv) a brief description of any further corrective actions that the operator or others need to take to adequately protect public health and safety and the environment prior to the implementation of the remediation plan described in subdivision (a)(3) below.
(3) Within 60 days of detection, implement a remediation plan approved by the EA and CIWMB for the methane gas releases, place a copy of the plan in the operating record, forward a copy of the plan to the EA and CIWMB, and notify the EA that the plan has been implemented. The plan shall describe the nature and extent of the problem and the proposed remedy.
(4) Construct a gas control system that meets the criteria of §20939, designed by a registered civil or mechanical engineer, within a period of time specified by the EA. Installation of the system shall be in accordance with a design and in a manner approved for construction by the EA in coordination, if applicable, with the RWQCB.
(b) The EA, with concurrence by the CIWMB, may establish an alternative schedule for demonstrating compliance with subdivisions (a)(2) and (3) pursuant to 40 CFR 258.23(c)(4).
(c) The EA shall forward notifications and approvals made pursuant to ¶ ¶(a)(1), (2) and (3) to the CIWMB.
Note: Authority cited: Sections 40502 and 45020, Public Resources Code. Reference: Sections 43021 and 43103, Public Resources Code; and Title 40, Code of Federal Regulations, Section 258.23.
1. New section filed 6-18-97; operative 7-18-97 (Register 97, No. 25).
2. Amendment of section heading and section, including renumbering of former subsections 20937(b)-(g)(2) to new section 20939, and amendment of Note filed 8-21-2007; operative 9-20-2007 (Register 2007, No. 34).
This database is current through 6/17/22 Register 2022, No. 24
27 CCR § 20937, 27 CA ADC § 20937
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