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operations shall be reseeded within five (5) days after the completion of the work, weather permitting, or in an area that is inactive for more than ten (10) days unless authorized and approved by the City Engineer. Except as otherwise provided in the erosion control plan, seed shall be in accordance with the City's current seeding specification which may include certified oat seed to provide a temporary ground cover as rapidly as possible. All seeded areas shall be maintained as necessary for seed retention. The parties recognize that time is of the essence in controlling erosion. If the Developer does not comply with the erosion control plan and schedule or supplementary instructions received from the City, the City may take such action as it deems appropriate to control erosion. The City will endeavor to notify the Developer in advance of any proposed action, but failure of the City to do so will not affect the Developer's and City'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, street or utility construction will be allowed, and no building permits will be issued unless the plat is in full compliance with the approved erosion control plan. 17. GRADING PLAN. The plat shall be graded in accordance with the approved grading development and erosion control plan. The plan shall conform to City of Arden Hills specifications. Within thirty (30) days after completion of the grading and before the City approves individual building permits the Developer shall provide the City with an "as constructed" grading plan certified by a registered land surveyor or engineer that all ponds, swales, and ditches for public drainage have been constructed on public easements or land owned by the City. Notwithstanding the foregoing, the City may issue building permits to the Developer, prior to completion of all grading, provided the City Engineer has determined that adequate erosion control measures are in place. The "as constructed" plan shall include field verified elevations of the following: a) cross sections of ponds; b) location and elevations along all swales, wetlands, wetland mitigation areas if any, ditches, locations and dimensions of borrow areas/stockpiles, and installed "conservation area" posts; and c) lot corner elevations. The City will withhold issuance of building 187184v1 7