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15. <br /> <br />The maximum noise level at the perimeter of the work site shall be within the limits set by <br />the Minnesota Pollution Control Agency and the Environmental Protection Agency of the <br />United States. <br /> <br />16. <br /> <br />Ail mining operations shall be conducted in accordance with the grading plan dated received <br />by the City on March 15, 1994. No more than one (1) acre of disturbed area shall be <br />permitted at any time. Continuation of mining shall require finished grade areas to be <br />restored with six (6) inches of topsoil, seed and disc anchored mulch. <br /> <br />17. <br /> <br />All costs incurred by the City in executing and administering this permit shall be the <br />responsibility of the permit holder. The permit holder shall maintain a minimum Five <br />Hundred Dollar ($500.00) balance in an escrow account with the City. This escrow shall be <br />used to reimburse the City for expenses incurred in the administration of this permit. At the <br />time the mining operation and site restoration are completed to the satisfaction of the City, <br />the balance of the escrow shall be returned to the Permit Holder. <br /> <br />18. <br /> <br />Only State, County and City streets constructed to 9 ton standard shall be used as haul roads. <br />The only City streets designated as haul roads for the operation shall be Ferret Street NW <br />north of 147th Avenue NW and 147th Avenue NW between Ferret Street NW and <br />Armstrong Blvd. NW The Permit Holder shall provide access from the site to the City street <br />at a single point and a 50 foot length of crushed gravel shall be placed from this point into <br />the site to minimize tracking dirt residue onto the City streets. <br /> <br />19. <br /> <br />All mining operations shall be conducted between 6:30 a.m. and 8 p.m. on weekdays only <br />unless otherwise specifically approved by the City Administrator and/or his designee. <br /> <br />20. <br /> <br />The amount of dust or other particulate matter caused by the mining operation shall not <br />exceed the standards established by the Minnesota Pollution Control Agency. No operation <br />shall be allowed when wind gust exceed 30 miles per hour. <br /> <br />21. <br /> <br />All operations shall comply with all applicable Minnesota Pollution Control Agency <br />regulations and Federal and Environmental Protection Agency regulations for the protection <br />of water quality. <br /> <br />22. <br /> <br />All haul roads are subject to the approval of the City Engineer. While hauling operations are <br />in progress, the permit holder shall maintain the haul road in a condition satisfactory to the <br />City Engineer. When hauling operations are completed, the permit holder shall either <br />restore that haul road to a condition at least equal to that which existed at the time the <br />hauling operations were started, or compensate the local road authority in an amount <br />satisfactory to that road authority and concurred in by the City Engineer for the restoration <br />of that haul road. The City Engineer will then accept such restoration or concur in such <br />financial settlement for the restoration of the haul road in writing and such acceptance will <br />relieve the permit holder of any additional obligation in connection with the restoration of <br />the haul roads. If the permit holder fails or refuses to perform haul road restoration or to <br />make satisfactory financial settlement for such restoration, the City will cause the restoration <br />work to be done and require reimbursement from the financial guarantee required herein. <br /> <br /> <br />