Loper said the silt was contaminated with what one would normally expect to find in silt from road runoff: “heavy oil compounds, pesticides, etc.” “However, because the actual dredged volume of impacted sediment was less than originally estimated impact levels were lower than anticipated, the cost to dispose of the impacted sediment was also less than the original estimate.” “The original impacted sediment volume was conservatively estimated to insure that sufficient funding was available once dredging commenced,” Loper said. ![]() Therefore, an estimate of the volume of impacted sediment was prepared and the estimated cost to dispose of the volume of sediment was included in the project budget.” “Once the impacted sediment was removed from the pond, it had to be removed to a properly licensed facility for disposal. “In preparation for the dredging project, the accumulated sediment at the bottom of the pond was probed and sampled to determine the approximate volume to be dredged and the characteristics of the spoil material,” he said in the email. The reason for the decrease was that there was not as much contaminated sediment that had to be removed as originally estimated, county engineer Matt Loper said in an email. The final cost will be $892,489.91, which is $307,470.09 less than what had been budgeted. 8 meeting are expected to authorize the final payment to Netcong-based Salmon Brothers for dredging and dam repair at Duck and Mettler’s ponds. ![]() The Somerset County Freeholders at their Oct. Dredging projects at Duck and Mettler’s ponds in Colonial Park ended up costing less than expected.Ī pond dredging project at Colonial Park ended up costing about $300,000 less than anticipated.
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