PERMFILE129033 - Laserfiche WebLink

Home Browse Search

Phase IV Weekly Summary No. 29 Page 2 footprint, where the Arequa gulch overburden storage azea sedimentation pond will later be constructed. Ames also cleazed and grubbed topsoil from the southern inboazd slope ofthe Phase IVa azea by use of a Caterpillar D8 dozer, a Caterpillar 9661oader, and several Caterpillaz 777 haul trucks. Topsoil material was hauled to a neazby stockpile, located south of the new highway 67 construction. Ames conducted slope re-contouring in the Phase Na azea, which included blasting east of the existing HWY 67, at Permanent Diversion Channel stations 34+00 through 44+00 on August 22"a through 25'". No confirmation drilling or underground working remediation occurred within the Phase Na area during this reporting period. Phase IVb Ames completed placement and compaction efforts of SF, west of the active crusher, for the new LOB construction subgrade. A Caterpillaz D8 dozer was used in the azea to perform rough grading of the southwest facing inboard side slope. Several laborers were present during grading activities to remove debris and deleterious material ahead of the dozer. Ames finished the top of the SF in small cut to fill azeas by use of a Caterpillar paddlewheel scraper, and the D8 dozer. Compaction was attained by use of a smooth drum vibratory compactor and supplemented by haul trucks splitting their tracks across the fill. The water wagon and/ or the Mack water truck attained moisture conditioning when necessary. . No confirmation drilling or underground working remediation occurred within the Phase Nb azea during this reporting period. Phase Nc Ames did not perform any construction activities within the Phase IVc azeas during this reporting period. No confirmation drilling or underground working remediation occurred within the Phase Nc azea during this reporting period. (See Attachment A for approximate construction locations for all Phase N areas.) Field Monitoring and Testing Activities Golder observed clearing and grubbing activities in Upper Arequa Gulch (Phase IVa), and in the southern limits of the Phase IVa area. Cleazing and grubbing activities were conducted within the clearing limits. Golder monitored SF placement in all the Phase IV azeas including, verification of lift thickness, material, compactive effort, particle size, and temperature for compliance with the drawings and L~ rn~~ rve xs a,e,v-n.m~ Golder Associates Inc.