Soil Excavation. 1. Developer shall allow City to excavate soils from the Project Area for City’s use as fill in the construction of the Peabody Road overcrossing or other public improvements within the Specific Plan Area, or other areas upon agreement by the Parties, constructed by City or constructed by another entity on behalf of City. Developer will not charge City for soils; City will be responsible for the cost of permitting, excavation, storm water requirements, transport of soils and stabilization of the area from which the soils were taken.
2. City shall allow Developer to excavate and export soils for use as fill in other locations, subject to approval of a grading permit.
3. The location and manner of excavation shall be mutually acceptable to both City and Developer and shall be generally consistently with any preliminary grading plans.
Soil Excavation. Based on previous assessment activities, the impacted soil/fill material is visually differentiable from the apparent native/non-impacted soil. Therefore, the cleanup excavation activities on the northern portion of the site (to begin after the removal and treatment of soils discussed above) will excavate directly to the apparent native/non-impacted soil interface followed by six-inch lifts until XRF field screening results show no further elevated metals impacts. Excavation base samples and side-wall/perimeter samples will be collected for XRF and laboratory verification analyses following excavation activities. A layer of concrete washout, which ranges from 1 to 10 feet thick, is found over the majority of the site with the exception of the northernmost portion and the southwest corner. A large portion of the concrete washout material will be left in place and will provide an exposure barrier for the fill layer below. A portion of the concrete washout material may be removed, pending the results of a Public Improvement Plan Study, to provide surface water drainage from the north portion of the site to Jordan Creek in the south. Removed concrete washout may be crushed on site and used in the future as trail base, as an exposure barrier for contaminated soils left on site, or for clean fill. Before reuse on site, the concrete will be sampled for RCRA 8 metals, further details are provided in Section 6.3.
Soil Excavation. During excavation, all exposed pits shall be whenever possible backfilled immediately or covered. Where it is unavoidable to have transient soil piles pending collection for treatment, the transient piles shall be bottom-lined, bunded and covered during rain events with impervious membrane. As such, it is unlikely that the surface runoff would be contaminated. With proper implementation of the above mitigation measures, no adverse water quality impact associated with excavation works is expected on the identified water sensitive receivers
Soil Excavation. During excavation, all exposed pits shall be whenever possible backfilled immediately or covered. Where it is unavoidable to transiently pile up soils next to the excavation pit, the transient pile shall be bottom-lined, bunded and covered with impervious membrane during rain event in order to avoid generation of contaminated runoff.
Soil Excavation. Soil shall be excavated from either borrow areas #1 or #2, or any other areas within the landfill site as directed by the Department. Contractor will also be allowed to excavate the existing intermediate cover soil in the immediate area that will receive waste. Contractor will not be allowed to excavate soil from a Waste Management Unit (WMU) in which Contractor will not be placing waste during the next three to six months. This is to prevent generation of additional leachate and gas emissions once some of the cover is removed. Contractor shall coordinate with the Department to reduce the size of intermediate cover soil removal to minimize this impact. Grades and tolerances shown on the Borrow Plan (Sheet 8) shall be adhered to and any excavation areas shall be graded to promote positive drainage. Soil shall be excavated only for landfill operations or as directed by the Department. In the event the Department directs the Contractor to excavate from any area other than the soil borrow areas identified on Borrow Plan (Sheet 8), or the existing intermediate cover soil on WMUs 4, 5, 6A, 6B, 6C, and 6D the haul distance will be less than or equal to the haul distance between the identified soil borrow areas on Borrow Plan (Sheet 8), and the active filling area. In borrow areas #1 or #2, where excavation is required below surrounding ground level, ponding of liquid shall be controlled and minimized so further excavation activities are not halted. Excavation could potentially expose buried cultural resources including prehistoric Native American burials. County shall retain a Professional Archaeologist to provide pre- construction briefing(s) to Contractor’s supervisory personnel to alert them to the possibility of exposing significant prehistoric archaeological resources within borrow area #2. The Contractor may be required to provide pumps, pipes, hoses, or any other equipment necessary to remove ponding to appropriate drainage locations. Contractor is responsible to acquire permission from the Department prior to discharge of surface water or ground water to any of the drainage ditches. The existing long term intermediate cover soil on WMUs 4, 5, 6A, 6B, 6C, and 6D shall be excavated and used for daily and intermediate cover soil as needed. Long term intermediate cover soil on WMUs 4, 5, 6A, 6B, 6C, and 6D may be excavated in advance of waste placement activities, provided the following conditions are maintained; During the dry months (June, July, August, a...
Soil Excavation. 1. Developer shall allow City to excavate soils from the Project Area for City’s use as fill in the construction of the Peabody Road overcrossing or other public improvements within the Specific Plan Area, or other areas upon agreement by the Parties, constructed by City or constructed by another entity on behalf of City. Developer will not charge City for soils. City will be responsible for the cost of permitting, excavation, storm water requirements, transport of soils and stabilization of the area from which the soils were taken.
2. The location and manner of excavation shall be mutually acceptable to both City and Developer and shall be generally consistently with any preliminary grading plans.
3. City shall allow Developer to excavate and export soils for use as fill in other locations, subject to approval of a grading permit.
