Section 2597 - Closure and Post-Closure Maintenance Plan(a) The following information shall be included in the closure and post-closure maintenance plans: (1) Projected schedule for partial and final closure.(2) Description of proposed final treatment procedures which may be used for the wastes in each waste management unit, including methods for total removal and decontamination, if applicable. If alternative treatment or disposal procedures are under consideration for particular units or for the entire facility, a description of the alternatives is required.(3) A topographic map, at appropriate scale, contour interval, and detail showing the boundaries of the unit or facility to be closed and projected final contours and any changes in natural surface drainage patterns.(4) A description of the design and the location of all features and systems which will provide waste containment during the post-closure maintenance period to the extent that such features and systems differ from those described under Section 2596 of this article.(5) A description of the precipitation and drainage control features at closed units, to the extent that such features differ from those described under Section 2596 of this article.(6) A description of the leachate control features and procedures at closed units, to the extent that such features and procedures described under Section 2596 of this article.(7) A map and discussion of ground water and unsaturated zone monitoring programs for the post-closure maintenance period, including location, construction details, and rationale of all monitoring facilities; to the extent that such systems differ from those described under Section 2596 of this article.(8) An evaluation of anticipated settlement due to decomposition and compaction of wastes and subsidence of underlying natural geologic materials.(9) A description of the nature of the final cover, including its physical characteristics, permeability, thickness, slopes, elasticity (shrink and swell), and erodability, including design details of all proposed landscaping, drainage and irrigation facilities, and other features to be placed over the final cover.(10) The post-closure land use of the disposal site and the surrounding area.(11) Estimates of costs for closure and post-closure maintenance for the anticipated post-closure maintenance period.(b) If the waste management unit is to be used for purposes other than nonirrigated open space during the post-closure maintenance period, the discharger shall submit a map showing all proposed structures, landscaping, and related features to be installed and maintained over the final landfill cover. This map shall be at a scale of 1' = 100" and shall be accompanied by: (1) a description and quantification of water entering, leaving, and remaining on-site from all sources to determine potential adverse impacts due to the proposed use, and corresponding mitigative design features that will ensure the physical and hydraulic integrity of the final cover; and(2) detailed design plans and description(s) of the monitoring system(s) that will effectively detect penetration of the final cover by precipitation or applied irrigation waters.(c) dischargers who submit information described in subsection (a) of this section to DTSC pursuant to Sections 66264.112 (for fully-permitted Units) or 66265.112 (for interim status Units) of Title 22 of this code need not submit this information to the regional board as a separate submittal. A copy of all information described in subsection (a) of this section submitted to DTSC shall also be submitted to the regional board.(d) the regional board shall approve the water quality aspects of closure and post-closure maintenance plans for Class I waste management units.Cal. Code Regs. Tit. 23, § 2597
1. Amendment of subsections (b)(1), (c) and (d) filed 6-18-97; operative 7-18-97 (Register 97, No. 25). Note: Authority cited: Section 1058, Water Code. Reference: Section 13360, Water Code.
1. Amendment of subsections (b)(1), (c) and (d) filed 6-18-97; operative 7-18-97 (Register 97, No. 25).