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Foothill Sanitary Landfill — Module 1 December 2003 <br />County of San Joaquin Job No 031602 00 02 <br />5.4 Geotextile <br />8 -oz. geotextile was used as a separation layer between the LCRS drain gravel and the <br />operations layer. In addition, geotextile was used in the LCRS trenches to encapsulate <br />the gravel fill and HDPE pipe and a double layer was placed within the sump area as a <br />cushion geotextile. <br />5.4.1 Receiving Inspection <br />Upon arrival by truck shipment, the unloading and storage of the geotextile rolls were <br />observed by Vector's CQA Monitors. Each roll of geotextile was logged in by roll <br />number and the roll numbers then cross-checked against the quality control documents <br />provided by the Contractor as a submittal. Following this inspection and approval, the <br />material was released to the Contractor for installation. A copy of the log of geotextile <br />received has been included in Appendix L. The manufacturer's QC data have also <br />been included within Appendix L. <br />5.4.2 Conformance Testing <br />Select samples of the geotextile were cut from random rolls of the geotextile at the <br />manufacturing plant by Precision for conformance testing in accordance with the project <br />specifications and CQA manual. Conformance testing for the geotextile component <br />included the following: <br />• mass per unit area (ASTM D-5261) <br />• grab tensile (ASTM D-4632) <br />• puncture strength (ASTM D-4787) <br />• permittivity (ASTM D4491) <br />• apparent opening size (ASTM D4751) <br />Eight (8) geotextile samples were tested for conformance. Based on approximately <br />1,500,000 ft2 of geotextile used, this testing frequency corresponds to one test per <br />187,500 ft2,, which satisfies the requirement of one test per 200,000 square feet (ft2). <br />Results of the conformance testing indicated that the materials met the requirements of <br />the project specifications. A summary of the geotextile conformance testing is shown in <br />Table 6. Detailed test results are provided within Appendix L. <br />Vector Engineering, Inc. • 143E Spring Hill Drive - Grass Valley, CA 95945 • (530) 272-2448 <br />35 <br />