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County of Riverside <br /> <br /> 6 <br />place all hardscape drainage structures; and shall promptly mitigate silting/blockage of these <br />structures resulting from SEI activities. Upon completion of the construction, maintenance of <br />the cover will be the responsibility of SEI. See Section 9 of this PCLUP for maintenance <br />requirements. <br /> <br />8 PROTECT PUBLIC HEALTH AND SAFETY AND PREVENT <br />DAMAGE TO PROPERTY <br />This section of the report lists specific requirements of 27CCR 21190 for postclosure land use <br />changes in italics, followed by the proposed measures or explanations for the solar installation. <br /> <br />(a) Proposed post closure land uses shall be designed and maintained to: <br />(1) Protect public health and safety and prevent damage to structures, roads, utilities and gas <br />monitoring and control systems. <br /> <br />The proposed solar panel array locations are shown on Figure 4. This location is currently <br />vegetative cover. Runoff from the cover will be directed to the drainage systems as shown on <br />Figure 5A. <br /> <br />The arrays are not anticipated to interfere with any of the components of the current LFG <br />extraction system and environmental monitoring systems. There should be no interference with <br />their continued use. <br /> <br />(2) Prevent Public Contact with Waste, Landfill Gas (LFG), and Leachate <br /> <br />The proposed solar arrays do not require removal of the existing cover barrier layers, including <br />vegetative, low permeability layer, and foundation layer in the proposed locations. The arrays <br />will have footings on top of the existing soil cover. No penetrations into the landfill cover layers <br />will occur. <br />The ground-mounted panels sit on metal racks anchored to concrete ballast blocks and the <br />inverters and transformers sit on skids that are supported by concrete pads. The ballast blocks <br />and concrete pads do not penetrate the existing cover layers. Movement of the ballast blocks or <br />concrete pads will not damage the existing cover. Any damage to the existing cover caused by <br />equipment will be repaired with the same cover barrier material in accordance with the Special <br />Provisions for the Construction of the West Riverside Landfill Closure, Appendix E, page 209 <br />of this PDF. <br />(3) Prevent Landfill Gas Explosions <br /> <br />None of the solar installations involve buildings or enclosures that will potentially trap landfill <br />gas. However; electrical conduits passing through concrete slabs shall be protected by <br />explosion proof fittings to prevent methane from passing and entering electrical panel <br />enclosures where heat or arcing may occur.