#19 - At Home Apartments Final Plat and PUD

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\\barr.com\projects\Mpls\23 MN\82\2382020\_MovedFromMpls_P\2023\Permit 2023-31 Lake Elmo Townhomes 8\2023-31_Permit Ltr_Lake Elmo Townhouse 8.docx 1. The applicant shall obtain approval from the City of Lake Elmo Engineer for the proposed increase in peak stormwater runoff rates to the storm sewer in 39th St. N. east of Wildflower Drive. 2. Updated plans shall be submitted to the VBWD Engineer for approval with a note or detail to state that if soils that are not conducive to infiltration are discovered within the infiltration basin during construction, these soils need to be removed and replaced with soil material that will infiltrate at the design rate. The permit is not valid until the VBWD Engineer has approved the submittal. 3. This permit is not valid until a maintenance agreement in the general format of Appendix A of the VBWD Rules is submitted to and approved by the VBWD Attorney. The maintenance agreement must include a monitoring plan and details on maintaining the stormwater management facility. 4. Prior to permit closeout, a plan for post-project management of chloride use shall be submitted. At a minimum, the plan shall include the following: a. Designation of an individual authorized to implement the chloride-use plan b. Designation of an MPCA-certified salt applicator to implement the chloride-use plan for the site 5. Updated plans shall be submitted to the VBWD Engineer for approval to revise the discharge elevation of FES-300 to be at the bottom of the infiltration basin rather than up the slope to mitigate potential erosion issues. The permit is not valid until the VBWD Engineer has approved the submittal. 6. The permit holder shall contact the VBWD Wetland Biologist (Karen Wold, 952-832-2707) prior to the commencement of any construction to schedule a field visit to determine if any temporary or permanent wetland impacts will occur. If wetland impacts will occur, the owner shall submit the required documents and work with the VBWD to prepare and follow restoration plans. 7. The required surety shall be submitted prior to construction. 8. The applicant must obtain any necessary approvals from other persons and/or entities with ownership interests in the property affected by the proposed project. It is the applicant’s burden to obtain any and all necessary permissions or ownership rights to property not owned by the applicant, including prescriptive easements. The applicant must obtain any necessary permits. 9. This permit is not transferable. 10. The applicant agrees to indemnify and hold harmless the VBWD for any and all future liability, causes of action, or claims relating to or arising out of the District’s grant of this permit. Such claims include, but are not limited to, onsite flooding and flooding to neighboring properties. 11. This permit is subject to obtaining all other permits required by governmental agencies having jurisdiction (including an NPDES permit). 12. The VBWD Engineer and Inspector shall be notified at least 3 days prior to commencement of work. 13. Erosion controls shall be installed prior to the commencement of grading operations and must be maintained throughout the construction period until turf is established. Additional erosion controls may be required, as directed by the VBWD Inspector or VBWD Engineer. 14. All disturbed areas shall be vegetated within 7 days of final grading. 15. The applicant is responsible for removal of all temporary erosion-control measures, including silt fence, upon establishment of permanent vegetation at the project site, as determined by the VBWD Engineer and/or Inspector. 16. To prevent soil compaction, the proposed infiltration areas shall be staked off and marked during construction to prevent heavy equipment and traffic from traveling over them. If infiltration facilities are in place during construction activities, sediment and runoff shall be kept away from the facility using practices such as diversion berms and vegetation around the facility’s perimeter. Infiltration facilities shall not be excavated to final grade until the contributing drainage area has been constructed and fully stabilized. The final excavation phase shall remove all accumulated sediment and be done by light, tracked equipment to avoid compaction of the basin floor. To provide a well-aerated, highly porous surface, the soils of the basin floor shall be loosened to a depth of at least 5 feet to a maximum compaction of 85% standard proctor density prior to planting. The upper 10 inches of soil shall be tilled prior to planting. 17. Valley Branch Watershed District shall be granted drainage easements that cover land adjacent to stormwater management facilities, wetlands, lakes, and lowlands up to their 100-year flood elevations and all ditches, storm sewers, and maintenance access to the stormwater management facilities. 18. The required drainage and access easements shall be recorded with the Washington County Recorder’s Office. 19. Return or allowed expiration of any remaining surety and permit closeout is dependent on the permit holder providing proof that all required documents have been recorded (including but not limited to easements) and providing as-built drawings that show that the project was constructed as approved by the Managers and in conformance with the VBWD Rules and Regulations. 20. This permit becomes invalid if (1) the work is not initiated within 1 year of permit issuance, (2) work is idle for 12 consecutive months, or (3) work is not completed within 3 years of the permit issuance date. Approved: December 19, 2023 President Signature Valley Branch Watershed District Title Note: The grant of this permit in no way purports to permit acts, which may be prohibited by other governmental agencies.