AG 2007 03 26 - Laserfiche WebLink

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include survey of the current waste limits, number of acres to be closed, current side slopes (3:1 vs. 4:1), existing fill contours vs, permitted fill contours and any surface features around the perimeter of the closure area for drainage design. Approximately 14 acres, representing the most recently active C&D waste filling operation, has been identified for closure. The final closure will consist of (from the bottom up) a 12-inch layer of intermediate cover soil, overlain by either 18-inches of compacted low permeability clay soil with a specified maximum permeability of 5 x 10'' or a combined geosynthetic liner/geocomposite drainage layer with 18-inches of protective soil cover (no specified permeability), and finally a 6- inchvegetative soil cover'layer, which would be required for either application. Permitting if required by the SWS during the design phase of the C&D Landfill Closure project (e.g, update of the erosion control plan, permit fees, etc.) is not included under this amendment. CDM will be entitled to additional compensation should permitting be required. Please note that general services during construction are not included under this amendment. General services during construction will be provided under a separate amendment. 1. The Basic Services of ENGINEER as described in Section 2 of said Agreement are as follows: TASK 1-PROJECT COORDINATION CDM will provide project management services during design phase of the project. CDM will coordinate with NCDENR regarding progress meetings and review of documents on an as need basis. TMs service will be incorporated in the following tasks during the overall design process. TASK 2 -CLOSURE PLAN AND NOTICE OF INTENT TO CLOSE C&D LANDFILL Under this task, CDM will assist Cabarrus County with notifying the NCDENR Solid Waste Section of the intent to close the existing C&D Landfill in accordance with Section 15A NCAC 13B .0543 (c) (4) of the new C&D Solid Waste Regulations. This will be accomplished by inserting a notice of intent to close the C&D unit into the Operating Record. Also included under this task is the preparation of a Closure Plan for the specific C&D unit to be closed in accordance with Permit Condition No. 34 of the recently issued Permit to Operate the Cabarrus County C&D Landfill Expansion dated January 4, 2007. Permit Condition No. 34 states that "A closure plan must be submitted for approval at least 90 days prior to closure or partial closure of any landfill unit. At a m;n;n,um the plan shall address the following: a) design of a final cover system; b) construction and maintenance/operation of the final cover system and erosion control structures; c) surface water, ground water and explosive gas monitoring. This required closure plan is specific to the upcoming C&D Landfill closure and is in addition to the Facility Closure/Post Closure Plan and Financial Assurance requirements specified in Sections 15A NCAC 13B .0547(2) of the new C&D Landfill regulations. TASK 3 -DRAFT DESIGN DOCUMENTS Page 2 of 7 ~-''1