10-10-2022 City Council Packet - Laserfiche WebLink

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The grading operations will disturb approximately 158 acres and require an estimated 600,000 cubic yards of grading on -site. Grading activities will construct new roads, building residential pads, and stormwater features. 5. Water Quality Compliance with stormwater requirements will minimize and mitigate potential adverse effects on receiving waters. Project construction will add impervious surface to the site which consists of streets, residential homes, and driveways. Stormwater rate and volume controls will limit increases in runoff volume and associated pollutant transport. Stormwater basins are expected to mitigate potential adverse effects on water quality. 6. Wetlands and Surface Waters The wetland delineation survey was conducted in the summer of 2022 and delineated wetlands and public and private drainage ways on site. The wetland delineation report is currently under review with the Technical Evaluation Panel (TEP) which consists of Rice Creek Watershed District, the Board of Water and Soil Resources (BWSR), Anoka County Conservation District, and the Army Corps of Engineers. If any of these delineated features is impacted on site, the project proponent will need to obtain a Minnesota Wetland Conservation Act and Section 404 of the Federal Clean Water Act permit, and Section 401 Clean Water Act Water Quality Certification. 7. Wastewater The project is expected to produce normal domestic wastewater that will be typical of residential developments and will be designed within the limitations of the existing sanitary sewer system. 8. Hazardous Materials Review of the MPCA and MDA's "What's in my Neighborhood" (WIMN) interactive website identified 1 inactive brownfield on the Project Site and one petroleum tank release immediately to the north of the site. A Phase I and Phase II Site Assessment was conducted to analyze contamination on site and the MPCA has reviewed the site. The MPCA has issued a no action letter stating that the extent and magnitude of the release has been defined and does not pose a risk to human health or the environment. In addition to these two areas, there are 10 sites within 0.5 miles of the proposed Project Site as shown in the MPCA's database. The MPCA's website indicates that these sites have been properly investigated and managed. Therefore, these sites are not expected to adversely impact the Project Site. Prior to the demolition of the existing farmstead buildings, an asbestos and regulated materials (ARM) assessment will be completed and the MPCA will be notified if asbestos containing material (ACM) are identified during the ARM assessment. 25