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(A) The town has developed the Town Department of Storm Water Management Drainage Standards Manual (Drainage Standards Manual) that provides additional policy, criteria and information, including specifications and standards, for the proper implementation of the requirements of this subchapter. Revisions to the Drainage Standards Manual may be updated and expanded at the discretion of the town, Department of Storm Water Management (Department of Storm Water Management). Post-construction runoff control measures shall be designed and installed in accordance with Rule 13 and the Drainage Standards Manual. Storm water treatment practices that are designed and constructed in accordance with these design and sizing criteria will be presumed to meet the minimum water quality performance standards. The Drainage Standards Manual includes acceptable storm water treatment practices, including specific design criteria and operation and maintenance requirements for each storm water practice. The State Stormwater Quality Manual produced by the State Department of Natural Resources (IDNR) may be used as a guidance document for storm water quality treatment measures.
(B) A Storm Water Pollution Prevention Plan (SWPPP) shall be required that details how runoff and associated water quality impacts resulting from the development will be controlled or managed. Submittal requirements for the SWPPP shall be as referenced in 327 I.A.C. 15-5-6.5(a)(8) and the Drainage Standards Manual.
(C) Where appropriate, storage, infiltration, filtering or vegetative practices shall be used to reduce the impact of pollutants in storm water runoff on receiving waters, in addition to the practices, the following requirements shall be utilized:
(1) Infiltration practices will not be allowed in wellhead protection areas.
(2) Discharges will not be allowed directly into sinkholes or fractured bedrock without treatment that results in the discharge meeting Indiana ground water quality standards as referenced in 327 I.A.C. 2-11.
(3) Any storm water practice that is a Class V injection well must ensure that the discharge from the practices meets Indiana ground water quality standards as referenced in 327 I.A.C. 2-11.
(4) As site conditions allow, the rate at which water flows through conveyances shall be regulated to reduce outfall scouring and stream bank erosion.
(5) As site conditions allow, a vegetated filter strip of appropriate width shall be maintained along unvegetated swales and ditches.
(6) New gasoline outlets and refueling areas, or outlets and refueling areas that replace their existing tank systems shall be designed and installed using appropriate practices to reduce lead, copper, zinc and polyaromatic hydrocarbons in storm water runoff.
(D) The Drainage Standards Manual contains requirements for the drainage application and approval process. An application for drainage approval shall be submitted to the Department of Storm Water Management on the form provided for that purpose. A technical review shall be conducted by the Department of Storm Water Management or its designated representative.
(E) Approval of the project from the Department of Storm Water Management and construction approval through the Town Council must be obtained prior to the initiation of any land disturbing activities. Technical review fees shall be the responsibility of the developer and/or owner and shall be paid in full before a final approval is issued.
(F) All storm water treatment practices shall be maintained in good condition in accordance with operation and maintenance requirements for each storm water practice per the Drainage Standards Manual and the terms and conditions of the storm water management approval. The owner of the site must execute a grant of perpetual drainage easement that shall be binding on all subsequent owners of land served by the storm water management facility. The easement shall be granted to the Department of Storm Water Management in accordance with the terms in the Drainage Standards Manual.
(G) The town requires the submittal of a performance bond prior to project construction and a maintenance bond after completion of the project construction in accordance with the terms in the Drainage Standards Manual.
(Ord. 2005-11, passed 10- -2005)