2013-08-29_REPORT - M1980244 - Laserfiche WebLink

Home Browse Search

Emil �M_V amee, In addition to the structural fill placement for the PSSA toe berm embankment, the contractor continued fill operations and compaction by method specification for ADR haul road, location at approximate Sta.78 +00 — 83 +00 and near midway at approximate Sta. 48 +00 — 50 +00. A Cat D8 Dozer with GPS and a Cat C556 Smooth Drum roller was utilized. Progress is expected to continue. See Hwy 67 below for detail of embankment fill progress. Note: An Amec field representative monitored structural fill material temperatures placed within the areas of fill during all shifts. Average structural fill temperatures were above 32 °F Clay (SLF) Processing: Cameron Site: No clay mining or processing occurred during this reporting period due to a saturated site from previous rains. Squaw Gulch Site: Clay stripping and stockpiling occurred during this reporting period. Underdrain System: Secondary Underdrain: No work was performed on the Secondary underdrain during this reporting period. A total of 1380 feet of Secondary underdrain has been completed. Primary Underdrain: No work was performed on the Primary underdrain during this reporting period. A total of 1280 feet of Primary underdrain has been completed. Temporary Underdrain: No work was performed on the temporary underlain during this reporting period. Tree /Slash Clearing, Chipping: Seed Masters paused operations until further notice. S) Underground Workings Exploratory excavation was performed on underground working No. U6269 and No. 6011. These sites require further excavation and exploratory efforts. Confirmatory drilling was performed on underground working No. 6051, No. 6147, No. 6187, No. 6239 during this reporting period. All drill hole locations were established on a 4 -foot center isolating any voids found. Further remediation efforts will be ongoing until remediated. Summary of the remediation efforts will follow 100% remediation. During this reporting period exploratory excavation was performed on UG working No. 6269 and No. 6011. Site's listed require further investigation and excavation into bedrock as remediation continues to be completed. Underground working No. 6051, Concrete Plug was placed and will continue with remediation efforts until remediation is complete. A cemented rockfill is scheduled to be placed to complete this working. Underground Working No. 6239, site is prepared for geogrid to complete remediation. During this reporting period remediation efforts were performed and completed on UG working No.6137, No. 6139, No. 6140, No. 6197, No. 6198 and No. 6199. Sites listed were excavated to practical refusal into rock varying depths depending on the working remediated. The site for each working was then backfilled in 2 foot loose lifts to approximate planned subgrade elevation using the onsite structural fill (excavated material) and "bucket tamped" Page 2 of 7 MLE2 WE 08.17.13.doc