4.7 SR 08-15-2022 - Laserfiche WebLink

Home Browse Search

14. Surface and Groundwater Management. (01) Dewatering. Due to the variable nature of groundwater levels and stormwater flows, it will be the Developer's and the De�=eloper's contractors and subcontractors responsibilin- to satisfy themselves with regard to the elevation of groundwater in the area and the level of effort needed to perform dewatering and storm flow routing operations. All dewatering shall be in accordance with all applicable county, state, and federal rules and regulations. DNR regulations regarding appropriations permits shall also be strictly followed. (02) Wetlands. If the Developer proposes the filling of wetlands in connection with de�=elopment of the Subdivision, final plat approvalis contingent upon, and the final plat shall not be recorded until, receipt of necessary permits from appropriate regulatory agencies to fill wetlands as proposed by the Developer and approval by the Technical Evaluation Panel of the proposed mitigation plan for wetlands filling. If these permits are denied, or approval of the wetland permit and mitigation plan is subject to conditions which significantly impact the Subdivision, the final plat for the Subdivision shall be resubmitted to the City Council for consideration of changes required for the wetland approvals. The Cit�� shall receive a copy of the monitoring report annually for three years. (03) Erosion Control. Prior to initiating any work on the site, the erosion control plan, Plan B, shall be implemented by the Developer and inspected and approved by the City or other regulating authority. The City may impose additional erosion control requirements if they are deemed necessary to protect the downstream waters of the state. All areas disturbed by the grading operations shall be stabilized per the MPCA NPDES Stormwater Permit for Construction Activit�r and the Cit�- 1�1S4 permit. Seed shall be in accordance with the City's current seeding specification which will include temporary erosion control measures to provide ground co�=er as rapidly as possible. All seeded areas shall be fertilized, mulched, and watered as necessary for seed retention and growth. The parties recognize that time is of the essence in controlling erosion. If the Developer does not comply with the MPCA NPDES Stormwater Permit for Construction Activity, the City MS4 permit, with the erosion control plan and schedule, or supplementary instructions received from the City or other regulating authority, the Cit�r may take such action as it deems appropriate to control erosion. The City will endeavor to notify the De�=eloper in advance of any proposed action, but failure of the City to do so will not affect the Developer's and Cit�-'s rights or obligations hereunder. If the Developer does not reimburse the City for any cost the City incurred for such work within ten (10) days, the City may draw down the letter of credit to pay any costs. No development, utility or street construction will be allowed and no building permits will be issued unless the plat is in full compliance with the approved erosion control plan. (04) Grading. The Subdivision shall be graded in accordance with the approved grading development and erosion control plan, Plan B. The plan shall conform to Cin� specifications. `�lithin thirty (30) days after completion of the grading and before the City approves individual building permits (except up to three model home permits on lots acceptable to the Building Official per section 18), the Developer shall provide the City with an "as constructed" grading plan certified by a registered land surveyor or engineer that all storm water treatment/infiltration basins and swales, have been constructed on public easements or land owned by the City. The "as constructed" plan shall include field verified elevations of the following: (a) cross sections of storm water treatment/infiltration basins; (b) location and elevations along all swales, wetlands, wetland mitigation areas if any, locations and dimensions of borrow areas/stockpiles, and installed "consen=ation area" posts; and (c) lot corner elevations and house pads, and all other items listed in the Cin- Code. The Cit�- will withhold issuance of builcling permits until the approved certified grading plan is on file with the City and all erosion control measures, including full vegetation of entire site, are in place as determined by the City Engineer. The Developer certifies to the City that all lots with house footings placed on fill have been monitored and constructed to meet or exceed FHA/HUD 79G specifications. The soils observation