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 4 - Documentation and Reporting for Regulatory Tiers, Permits, WDRs, and Plans › Subchapter 4 - Development of Closure/Postclosure Maintenance Plans › Section 21790 - CIWMB-Preliminary Closure Plan Contents

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) The
					 purpose of the preliminary plan is to provide a basis for the operator to
					 establish a preliminary estimate of closure costs certified for accuracy by a
					 registered civil engineer or certified engineering geologist, and enable the
					 CIWMB to assess the reasonableness of the cost estimate for non-water quality
					 aspects of closure.
(b) The plan
					 shall identify the steps necessary to perform either partial final closure, in
					 accordance with §
											21120, or complete landfill
					 closure and shall include, but is not limited to, the following information:
(1) a closure cost estimate pursuant to
					 §§
												21815 and
					 21820;
(2) location maps indicating property
					 boundaries and the existing, permitted, and proposed final limits of waste
					 placement; entry roads; and structures outside the property boundary but within
					 1000 feet of the property boundary. A location map shall also be included
					 showing the general location of the landfill;
(3) [Reserved];
(4) a location map of the current monitoring
					 and control systems including: leachate control and drainage and erosion
					 control systems as required pursuant to chapter 3 (§
												20180 et seq.); landfill gas
					 monitoring and control systems as required pursuant to chapter 3 (§
												20180 et seq.);
(5) a description of proposed postclosure
					 land uses;
(6) an estimate of the
					 maximum extent of the landfill that will ever require closure at any given time
					 during the life of the landfill;
(7) an estimate of the closure date based on
					 volumetric calculations, including supporting documentation. The estimate shall
					 account for the effects of settlement and for volume occupied by daily cover
					 material; and
(8) a preliminary
					 description of closure activities including schedules for implementation. The
					 activities described shall include, but are not limited to:
(A) site security and structure removal
					 pursuant to §§
													21135 and
					 21137;
(B) final cover and grading pursuant to
					 §§
													21140 and
					 21142. The description shall
					 include type of materials and estimate of the volume or amount needed of each
					 type of material. If on site materials are planned for use in the final cover
					 for the low permeability layer, test results confirming the suitability of such
					 materials shall be included;
(C)
					 construction quality assurance methods pursuant to §§
													20323 & 20324;
(D) drainage and erosion control systems
					 pursuant to §
													21150;
(E) landfill gas monitoring and control
					 systems pursuant to Article 6, Subchapter 4, Chapter 3 (§
													20920 et seq.);
(F) leachate monitoring and control measures
					 pursuant to §
													21160.