2017.04.17 CC Packet - Laserfiche WebLink

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Wastewater - It is estimated that the proposed project will generate an average of 88,776 gallons per day (GPD) of wastewater. Wastewater will be conveyed to the Metropolitan Wastewater Treatment plant in St. Paul via the sanitary sewer trunk system. The increase in wastewater resulting from the proposed project can be accommodated by the system. The proposed development as planned will require a change to the specific sewer districts in the City's Comprehensive Plan. This will require a modification to the existing forcemain discharge from the lift station on 130th Street. The final routing of the sanitary sewer, as well as the required improvements to the 130th Street System will be reviewed by the City Engineering staff prior to permitting and construction. Water/Wetland Resources —The project will impact approximately 1.32 acres of impact in seven areas, primarily to accommodate proposed road crossings. Wetland impacts will be reviewed and approved by the appropriate regulatory agencies and mitigated prior to construction. The anticipated replacement ratio is 2:1. Erosion prevention and sediment control best management practices (e.g., silt fence, floating silt curtain, erosion control blanket, inlet protection, and stabilization of disturbed areas) will be used to minimize the risk of sedimentation offsite and into downstream water resources. These requirements will be documented in the Stormwater Pollution Prevention Plan (SWPPP), which will be included in the final plans, as well as with the National Pollutant Discharge Elimination System/State Disposal System (NPDES/SDS) Construction Stormwater General Permit, which will be obtained prior to beginning construction. All best management practices used will be reviewed by the appropriate state and local authorities prior to project construction and any additional requirements will be incorporated into the appropriate permits. By incorporating best management practices during construction, adverse impacts to water resources are expected to be minimized. Stormwater Management — The project will increase the rate and volume of stormwater runoff. Onsite stormwater treatment from ponds, filtration, and water reuse are anticipated to be used to mitigate water quality and quantity impacts. The proposed stormwater management system will reduce the rate and volume of the stormwater runoff and mitigate its impacts. The stormwater Adelaide Landing Record of Decision