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Ms. Rachel Juba June 19, 2020 Page 2 Stormwater Management The site is proposing to provide stormwater management with an infiltration basin at the south end and a biofiltration basin at the north end. Additional information is required to confirm requirements are met however it appears the proposed stormwater management features are adequately sized to meet rate control and water quality requirements based on the information submitted. Stormwater reuse is not utilized for this site considering we are able to infiltrate stormwater. Stormwater plan and model comments have been provided to applicant and will need to be addressed in future submittals for documentation and permitting purposes. Wetland 8. We received a wetland delineation report and Joint Application requesting approval of the wetland boundaries and types on June 1, 2020, which was noticed to the Technical Evaluation Panel on June 3, 2020. The area delineated will be expanded slightly and the subsequent report amended to accommodate a slightly larger project area than what was originally completed. This amendment will be distributed to the TEP early the week on J8une 22nd and a subsequent site visit the week of June 22nd or 29tn. The comment period ends June 20tn 9. The applicant should demonstrate that hydrology to wetlands will be maintained with the installed stormwater features. 10. The application is expected to be approved as is or with little change, and there is no anticipate wetland impacts based on the current site plans. County Comments 11. The Washington County Comprehensive Plan 2040 identifies 120 feet of future right-of-way along this section of CSAH 8. There is currently 100 feet of right-of-way. Although this is not a subdivision plat, the county requests a minimum 10-foot dedicated roadway easement. Staff will discuss this further with Washington County. 12. The access drive along CSAH 8 should be aligned with the driveway on the south side of the roadway east of the currently proposed location. A Washington County Access permit will be required. 13. Based on the anticipated daily traffic volumes for the maintenance facility, we expect that an eastbound center left turn lane and a westbound right turn lane will be required along CSAH 8. Such improvements, while important, may have impacts to adjacent properties and/or significant trees, and thus the design and alignment of these improvements should be carefully considered. 14. The developer or the City must submit the drainage report and conclusions to our office for review of any downstream impacts to the county drainage system. Along with the drainage calculations, the conclusions that the volume and rate of stormwater run-off into the county right -of way will not increase as part of the project. 15. Any grading within County right-of-way will require a Washington County Right -of -Way Permit. 16. All utility connections for the development require Washington County Right -of -Way permits. Typically, these are the responsibility of the utility companies.