2003-09-15_REVISION - M1980244 - Laserfiche WebLink

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P3~ase IVb WeeMy Summary No. 30 Page 2 003-2203 Ames continued excavation of the Phase TVb OSA geomembrane anchor trench at the Phase N b/c Yie- in area, excavating approximately 700 linear feet of anchor trench in preparation for geomembrane deployment. Ames also continued backfill and compaction of approximately 500 feet of Phase IVb OSA geomembrane anchor trench. Ames hauled, placed, and compacted Soil Liner Fill (SLF) material into the Phase TVb OSA on the east slope of Chicken Hawk Hill (west of the PSSA). SLF material was worked, tested, and passed per project specifications prior to SLF surface acceptance. Ames continued placement of I3igh Volume Solution Collection System (HVSCS) secondary and tertiary piping within the Phase TVb OSA limits, followed by Drain Cover Fill (DCF) haul and placement per project specifications. Ames continued to haui and place DCF in the Phase TVb OSA on the south-facing slopes of Raven Hill. Ames also removed DCF from the west Phase III azea in prepazation for Phase IVb / Phase >II geosynthetics tie-in. Ames corninued production of DCF at the screen plant located near the Secondary Crusher. Ames also resumed limited production of SLF. Poly-Flex continued deployment of 80-mil single-sided textured LLDPE geomembrane in the Phase TVb OSA on the east-facing slope of Chicken Hawk 1=-Till. Poty-Flex deployed 80-mil single-sided textured LLDPE geomembrane over an area of approximately 315,629 squaze feet in the Phase TVb OSA during this reporting period. Geomembrane panels B-721 through B-828 were deployed, seamed, and tested by Poly-Flex. Destructive fusion and extrusion seam samples DFb-205 through DFb-239 and DXb-44 through DXb116 were marked and removed. The results of testing on destructive fusion and extrusion samples DFb-192 through DFb-221, DFb-223 through DFb-239, and DXb-43 through DXb-46 passed per project specification. DFb-222 failed to meet project specification and additional destmctive samples (DFb-222a1 and DFb-222b1) were taken across approximately 35 linear feet of fusion weld until passing conditions were met. The delineated failure across the seaming length was capped and extrusion welded. A map ofthe area worked during this reporting period is provided in Attachmern C. Phase TVc Ames did not perfom any constr=setion ac`uvities ;:-r the Phase IVc area during this reporting period. ADR Liner Expansion Ames hauled, placed, and compacted Soil Liner Fill (SLF) material into the ADR Liner Expansion area west of the CC&V lab, SLF material was worked, tested, and passed per project specifications prior to SLF surface acceptance. Ames excavated and conshucted approximately 250 feet of LDT in the ADR Liner Expansion azea, extending the Phase I LDT. Ames backfilled the 3-inch diameter PVC extension pipe with trench bedding fill material and reconstructed the Leak Detection Sump maztlrole west ofthe end berm. rn~,wwn~c~,-w~c'fo, zoo3 CaoiQer Associates inC.