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Home My WebLink About4309 OrdinanceORDINANCE NO. 430 AN ORDINANCE of the City of Pasco, Washington, Creating a New Section 13.60.120 "Stormwater and Drainage Improvement Standards"; Amending Section 13.60.130 "Stormwater Construction Permit Required"; Amending Section 13.60.140 "Prohibited Discharges"; and Amending Section 13.60.150 "Authorized Discharges" WHEREAS, as a result of the Federal Clean Water Act, the National Pollutant Discharge Elimination System (NPDES) permit program controls water pollution; and WHEREAS, the City is required to comply with the Phase II NPDES rules as applicable to Eastern Washington by the Washington State Department of Ecology's Stormwater Management Manual for Eastern Washington; and WHEREAS, for compliance with both Federal and State law, and to provide notices to the citizens of the City of Pasco, of the application of the construction and maintenance standards required by such guidelines, an Ordinance codifying its adoption is necessary. NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF PASCO, WASHINGTON, DO ORDAIN AS FOLLOWS: Section 1. That a new Section 13.60.120 entitled "Stormwater and Drainage Improvement Standards" of the Pasco Municipal Code shall be and hereby is adopted and shall read as follows: 13.60.120 STORMWATER AND DRAINAGE IMPROVEMENT STANDARDS. A) All stormwater and drainage improvements shall be planned, designed, permitted, constructed, and maintained in accordance with the requirements of the latest version of the Washington Department of Ecology Stormwater Management Manual for Eastern Washington (SWMMEW), which is hereby adopted by reference, including all State's amendments and modifications thereto as adopted by the Washington State Department of Ecology as authorized by RCW 35A.12.40. The Technical Requirements outlined in Appendix 1 of the Eastern Washington Phase II Municipal Stormwater Permit shall apply to all new development and redevelopment sites. B) All new stormwater and drainage facilities shall be designed by a Professional Engineer licensed in the State of Washington. Complete stormwater runoff and drainage facilities sizing calculations shall be submitted to the Public Works Director for review, comment, and utilization for the granting or denying of any permit. C) All subsurface infiltration facilities used for the treatment and disposal of stormwater shall meet the requirements of and be registered with the Washington State Department of Ecology Underground Injection Control (UIC) program. The registration shall be completed prior to project acceptance, approval, and the issuance of any Certificate of Occupancy. Ordinance - Stormwater and Drainage Improvement Standards - I D) Storm runoff: 1) Occurring on all lots or division of land subject to development by the construction of structures, improvements and the installation of impervious surfaces shall be retained and disposed of on site with no storm runoff occurring thereon permitted to enter the public right-of-way or public storm drainage system. 2) For new public streets shall be designed and constructed in accordance with the Stormwater Management Manual to the point where the adjoining property owner's responsibility for further extension begins. 3) All stormwater sewer designs for new public streets shall be based upon an engineering analysis that takes into account total drainage areas, runoff rates, pipe and inlet capacities, treatment capacity, and other factors pertinent to its design and operation. E) The property owner upon which a stormwater and drainage facility is located shall maintain all stormwater Best Management Practices (BMPs) for those facilities that are installed upon private property. Section 2. That Section 13.60.130 entitled "Storm Water Construction Permit Required" of the Pasco Municipal Code shall be and hereby is amended and shall read as follow: 13.60.130 STORM WATER CONSTRUCTION PERMIT REQUIRED. Pries —to eonstmetian of Any n.«e ..,..,.1:.... .. e,.t upon eel prepe,ay leeeted within Columbiaoritioal at-7eas as designated in the City's Gempr-ehensive I and 4-;qA Plan or within 200 feet of the high water mark of the Rive« a ate«,,, Water Plan ..hall he suh-m-i4e.l And :t ..hall be issued . payment of the ate\I Were« Censkuetien Pefmit as provided in the Eity Fee S ...,, ee. Constmetion of e_.. s"et„«e ..,..,.i:..,,. :mTY41i.e e..t . pop eel pr-epe..t. not 1 ,1 withifi the ofitioal Areas e «..,«k of the !`..1..mbia RiVe« f.,e,..,et «equine submission eC ate,..» {Mete« Pigg or the issiianee of a ateFm Wa4e« !''e.,..tR"40an Permit unless required by A,e DiFeetcr of Pabl a Works, due to the uaique ehameteristie., of the pfefaises hieh presents a A.«eet of stefm wa4e« «„ o4. A Storm Water Site Plan is required for any project subject to Core Elements #2, #3, #4, #5, #6, or #8 per Chanter 2 of the SWMMEW. Upon approval of the Storm Water Site Plan, a Storm Water Construction Permit shall be issued upon payment of the Storm Water Construction Permit Fee as provided in the City Fee Summary Ordinance. (Ord. 3550 Sec. 1, 2002.) Section 3. That Section 13.60.140 entitled "Prohibited Discharges" of the Pasco Municipal Code shall be and hereby is amended and shall read as follows: 13.60.140 PROHIBITED DISCHARGES. Illicit discharges, as defined by the Washington State Department of Ecology, are not allowed into any }ovate storm drain systems. (Ord. 3935, 2009.) Section 4. That Section 13.60.150 entitled "Authorized Discharges" of the Pasco Municipal Code shall be and hereby is amended and shall read as follows: Ordinance - Stormwater and Drainage Improvement Standards - 2 13.60.150 AUTHORIZED DISCHARGES. Discharges to the public stormwater system from the following sources shall be authorized, provided each discharge is volumetrically and velocity controlled to prevent resuspension of sediments in the stormwater system and complies with the respective conditions attached thereto: A) Discharges from water pipe sources, including water line flushing, fire hydrant system flushing, pipe breaks and pipeline hydrostatic test water. Planned discharges shall be controlled to prevent contaminates from entering the stormwater system and discharging to the Columbia River. Chlorine levels shall be reduced to 0.1 ppm or less and pH adjusted. B) Discharges from lawn irrigation or dust control water, provided the sprinkler pattern is fixed within the boundaries of the irrigated property. Such discharges shall be minimized through public education activities and water conservation efforts. C) Water used to wash down streets, sidewalks and buildings, provided the wash water is low in suspended solids and any detergent used is biodegradable. D) At active construction sites, with curb and gutter, an approved screening protection system shall be installed in catch basins and street sweeping must be performed prior to washing the street. Damage to street ditches or grass swales shall not be allowed. Construction sites disturbing one acre or more and construction proiects of less than one acre that are part of a larger common plan of development or sale are subiect to the Construction Stormwater Pollution Prevention requirements set forth in Chanter 7 of the SWMMEW. The developer of subdivisions or site plans with constructed curbs and gutters shall be responsible for the protection and maintenance of the stormwater system for five years or until all the subdivision or site plan lots are developed with permanent improvementsbuilt of), whichever comes first. The protection measures and maintenance program shall be approved by the City Engineer in the form of a written agreement with the developer. (Ord. 3935, 2009.) Section 5. This Ordinance shall take full force and effect five (5) days after its approval, passage, and publication as required by law. PASSED by the City Co it of theLCity of Pasco, Washington, and approved as provided by law this � day of 6; 2016. Matt Watkins, Mayor ATTE T: Debra L. Clark, City Clerk Ordinance - Stormwater and Drainage Improvement Standards - 3 APD AS TO FORM: b Leland B. Kerr, City Attorney