CFE agenda 010818 - Laserfiche WebLink

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.. s addressing an adverse impact. The Corps policy is no net loss of maximum storage capacity of the lake. Proposals that impact storage are required to replace the lost volume. For each cubic yard of storage lost, an equivalent volume shall be restored -at no cost to the Government. The cited proposal would discharge 386 cubic yards of clay fill material into the lake for one treatment on 300 acres. This volume is similar in scale to fill. for a bridge replacement or road widening project for which replacement of lost storage is required. A plan for replacement of lost storage volume must be provided for the proposal to be considered further. To address cumulative impacts, the proposal must also address how storage volume loss would be replaced for a full scale implementation of the treatment. The described effects of the cited phosphorus locking and algaecide treatments on fish and wildlife resources may also adversely impact two of the lake's congressionally authorized purposes which are dependent on these resources: public recreation and fish and wildlife conservation. The request indicates that lanthanum, a chemical component of the cited phosphorous locking fill material, would likely accumulate in certain tissues of fish in the lake. The request also states that it is very likely that fry and fingerlings will be negatively impacted by the application of the cited algaecide; that the effects of the algaecide on larger fish or the overall fish population is unknown; and that the extent of impacts that the algaecide would have on zooplankton, copepods, fry, fingerlings, juvenile, and adult fishes is difficult to predict as many yet undetermined factors need to be considered (i.e. application rate, duration, interval, copepod grazing rates, etc.). The request further states that wildlife that depend 'on fish as a food source may potentially be affected through a decrease in fish populations. The relatively short term and /or small scale of the demonstration project is identified as limiting factors for these effects. If the DWR chooses to move forward, additional information on these effects, over the term of the demonstration project and for a -full scale implementation, would be necessary. If DWR chooses to pursue the proposed use of Government property for this demonstration project, the preparation of an Environmental Assessment (EA) or potentially an Environmental Impact Statement (EIS) in compliance with the National Environmental Policy Act (NEPA) would be necessary. A 30-day public notice period for scoping of -the project would also be necessary to allow for public and agency input prior to DWR preparing the EA. Due to the many unknowns identified in the request, the. information provided is considered insufficient for the purposes of project scoping. If DWR chooses to move forward, additional information will be required. We appreciate DWR's efforts to address water quality issues in the Cape Fear River Basin, including Jordan Lake. If you have questions regarding this matter, please contact me at 919- 846 -9332, extension 2226.