2012-09-06_REVISION - M2008070 (25)

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Design and Operations Plan Western Gravel E & P Waste Disposal Facility • Waste characterization documentation, acceptance /rejection letters, waste manifests. • Random screening and inspection results. • Monitoring results (e.g. wet/dry wells, terrace face seepage, landfill gas). • Leachate management. • Construction as -built drawings and construction quality assurance (CQA) reports. • Revisions or variations from approved design or operations procedures. • Personnel training records. • CDPHE correspondence including inspections and notice of violations. • In -house and engineer inspection reports. • Closure and post - closure plans. • Closure and post - closure third party cost estimates. • Quarterly HSRF fees. • Annual financial assurance documentation. • Five year third party cost estimate for financial assurance documentation purposes. • Unauthorized entry and/or dumping at the facility. • Corrective action plans and reports. 4.7 INSPECTIONS 4.7.1 Weekly Inspections Facility maintenance requirements will be determined based upon routin e weekly inspections. All landfill facilities will be inspected focusing upon evidence indicative of component(s) failure (e.g. spills, leakage, liner exposure, embankment erosion). Weekly inspections will include the LDS, LCRS, surface water diversion and storage structures (e.g. retention pond embankment stability, storm water channels, and culverts), erosion, access road condition, fencing, and signage. In addition, landfill equipment shall be inspected for fluid leaks and repaired, as required. In the event that an observed condition is deemed likely to cause a release of waste materials, CDPHE will be notified within 10 days of the condition including proposed corrective actions. Documentation shall be signed by the person conducting the inspection and included in the Operating Record. 4.7.2 Annual Inspections October 24, 2011 Page 42 of 51 Comprehensive annual facility inspections shall be conducted by a qualified Colorado registered Professional Engineer. The focus will be upon similar facility components discussed abo ve. Documentation shall be signed by the engineer conducting the inspection and placed in the Operating Record. Identified deficiencies will be reported to the facility supervisor. Quality assurance /control reports or general repair reports shall be dev eloped following deficiency repairs. In the event that an engineered landfill structure(s) requires repair and/or replacement, a qualified engineer must observe the repair or replacement. A QA/QC report will subsequently be prepared and must be certified, stamped, and signed by a Colorado registered Professional Engineer. QA/QC and general repair reports will be placed in the facility Operating Record. QA/QC reports shall be submitted to CDPHE. 4.8 CONTINGENCY PLAN The intent of the contingency plan is to provide response guidance in the event of a potential release of landfill wastes (e.g. leachate). Incidents that could result in a potential release(s) include illegal dumping, suspicious materials, and spills; liquid entering a wet/dry well , recent seep development on the north face of NWCC, Inc.