Orange County NC Website
Browse       Search
Orange County Eubanks Road C&D Landfill <br />Construction Quality Assurance Plan <br />Revised March 15, 2021 <br /> <br /> <br />obtained at significant grade breaks. The contour interval shall be 2 feet. The <br />scale of the drawing shall be no greater than 1 inch = 50 feet. <br /> <br />a) Thickness Verification Table <br /> <br />Thickness verification tables will be generated for the base grade. All <br />thicknesses shall be measure perpendicular to the base slope. <br /> <br />2) Cap <br /> <br />Provide the elevations of the area to be capped prior to placement of cap <br />materials. The record drawing shall indicate the conditions of the site after <br />vegetation has been stripped from the closure area and the surface prepared <br />and ready for placement of the infiltration barrier layer. Provide grid <br />locations that indicate the elevations of the base grades on a maximum 50- <br />foot grid. On slopes, at a minimum the survey points will include top of slope, <br />midpoint, and toe of slope. Survey points shall be obtained at significant grade <br />breaks. The contour interval shall be 2 feet. The scale of the drawing shall be <br />no greater than 1 inch = 50 feet. <br /> <br />a) Thickness Verification Table <br /> <br />Thickness verification tables will be generated for the 6-ich topsoil finished <br />grade, 12-inch controlled subgrade and 18-inch infiltration layer. All <br />thicknesses shall be measure perpendicular to the base slope. <br /> <br />3) Infiltration Layer <br /> <br />Provide the horizontal limits of the top of the infiltration layer. Provide grid <br />locations that indicate the completed elevations of the soil cap. Grid locations <br />shall be horizontally the same as the grid locations used for base grades. No <br />additional soil layers shall be placed until a certified survey is submitted and <br />approved by the QAE demonstrating that the surface of the infiltration layer <br />conforms to the Contract Documents and that the layer is a minimum of 18 <br />inches thick. Partial surveys may be accepted at the discretion of the QAE. <br /> <br /> <br />3) Erosion/Vegetative Support Layer <br /> <br />Provide the horizontal limits of the top of the erosion/vegetative support layer. <br />Provide grid locations that indicate the completed elevations of the soil cap. <br />Grid locations shall be horizontally the same as the grid locations used for base <br />grades. No additional soil layers shall be placed until a certified survey is <br />submitted and approved by the QAE demonstrating that the surface of the <br />erosion/vegetative support layer conforms to the Contract Documents and that <br />DocuSign Envelope ID: 0844D1D6-E311-4FC5-8B5B-BB1E27A908ED