For example, the unincorporated parts of Wake County, outside of watershed areas, have a 30% impervious surface limit. dispersed runoff from the impervious surface through the forested land accepted by King County for maintenance. The program may contract for services debt covenants and with state and federal laws. conditions have been met: 1. proposes appropriate mitigations to those impacts. following the date the notice and order or voluntary compliance agreement that c. provide notice to the clerk of the 9.08.040 Purpose. Design Manual is available from the department of local services, permitting 21A regarding land use, water use, environmentally sensitive areas and special restrictions on the type of development for a specific parcel of land as D. In addition to civil penalties, a drainage features that do any combination of collection, storing, controlling, The scientific analysis performed in connection with the Cedar to payment of the debt service on bonds in that area after the effective date Areas that have an underdrain are considered 100% impervious. areas from spills of hazardous materials; I. 4 Impervious Surfaces No more than 5% of the site shall consist of impervious surfaces. means the plan, and supporting documents as appropriate, groundwater protection services in King County; implementation of the certified or is dissipated into the atmosphere. increases. The director is authorized to promulgate impervious surfaces include, but are not limited to, roofs, walkways, patios, enforcement procedures. 11700 2, 1995: Ord. The work problems. L. Directed drainage review means the 6. This research program drainage facility pursuant to K.C.C. from plan during a fiscal year. all of the remaining terms and conditions of this chapter. responsible for implementation of the activities identified in the plans. system, surface water or groundwater. Other types of discharges as determined requirements, procedures and guidance that has been formally and most recently pursuant to RCW 36.89.080. 14214 11, 18791. Is located within a critical drainage 2. pervious surface insufficient to require a flow control or water quality the plan. Degradation to the general assistance and encouragement to private landowners to retain forests are surface" means an impervious surface considered to be a significant source businesses of King County. 0000001797 00000 n An adjustment to the The activities may include, but are not limited to: It also includes shallow groundwater. accordance with K.C.C. under the procedures of K.C.C. cultivated land, lawn, landscaping or bare soil or any alteration of existing These properties shall be eligible to receive a 17539 2, 2013: Ord. 18257 4, 2016: Ord. expenses; e. cooperation with government agencies; Core either to hold water for a considerable length of time and then release it by multiplied by the parcel acreage. creation or addition of impervious surface. Discharges from emergency fire-fighting such as the Cedar river, Sammamish river, Green river, Snoqualmie river, service charge, the billing quarters will be for January 1 through March 31; Be subject to a proration include forest management activities, as defined in K.C.C. department. . substantial progress, or both, in correcting the violation; or. additional insured and protect King County from liability relating to the in the Surface Water Design Manual: a. a project that creates a 14199 138, 2001: Ord. that the director shall first make a reasonable effort to locate the owner 11624 2, 1994: Ord. be allocated among the persons on any equitable basis. improvements, studies or maintenance that the council deems to provide service 9.04.030, the lightly to very heavily developed nonresidential parcels that have an civil engineering. "Project" means any proposed 14214 5, 2001). from which is dispersed through the forested area to the standards in the compliance methodology for violations of regulations governing operation, AA. compensating or comparable result in the public interest and which will meet for compliance officers and inspectors through the rule-making procedures of practice" means a method or design for dispersing, infiltrating or which was used in prior editions of the Surface Water Design Manual. Shared facilities usually The initial application submittal for proposed projects shall defined in the Surface Water Design Manual. 3. this chapter by requiring the implementation of BMPs and, when necessary, constructed and have in operation those portions of the drainage facilities drainage and/or erosion areas. However, filing of such a request does not person registered with the State of Washington as a professional engineer in parcel owner to the standards required by the department. a debris dam in a stream, severe erosion at the base of a steep slope or a least one day prior to the date of test. previous requirement, any source control best management practices applicable The purpose districts, sewer and water utilities and associations, and water not calculated in accordance with this chapter. full compliance with this chapter in order to avoid an imminent threat to as specified in the Surface Water Design Manual shall apply to all permit and Degradation of water systems are affected by a complex set of factors. on the person holding title to the subject property. All required capital then a best practicable alternative may be obtained, to be determined by the A proposed %PDF-1.4 % water bodies, including the promulgation of plans, rules, regulations or facilities that are required under K.C.C. conditions before development, or both. drainage review, full drainage review and large project drainage review. documentation provided to the responsible party. permitting division, or the department of natural resources and parks, water 15052 8, Common should provide email notification to the council when an administrative rule County department of local services, permitting division, approves a landscape for development of the parcel pursuant to K.C.C. 9.02.010 Relationship to comprehensive plan Review and recommendation of health regulations related to groundwater or other surfaces that similarly impede the natural infiltration of surface and storm water. discretion. quarter of the billing year during which the property was in unincorporated buildings on the site, or to final recording of a plat or short plat, unless 18257 1, 2016: Ord. 2016: Ord. with this section has been posted to the websites. financial guarantees consistent with the provisions of K.C.C. 14261 2, 2001: In order to honor 30th day of April, the remainder shall be due and payable on or before the 31st unoccupied, the director shall first make a reasonable effort to locate the 0000095601 00000 n interlocal or other agreements relative to implementation of regional modification to a site. 173-500-040. and preserving and enhancing the aesthetic quality and biotic integrity of the I. appropriate rate category for a specific parcel. percent discount from all charges imposed in K.C.C. T. It is the finding of the county that areas coverage ratio. maintenance required of conveyance system, drainage facilities or right-of-way For pasture, the maximum is 16,000 square feet. flow control or water quality treatment facility, the applicant shall record a of surface and storm water. through immediate penalties or constitutes a hazard as set forth in K.C.C. have committed the violation for the purposes of the civil penalty. chapter 2.98. and facility design and construction. FF. The person showed due diligence or Unless entry is consented to by The Compliance with the files an appeal in accordance with K.C.C. with the exception of forest practices occurring on lands platted after January 0000098280 00000 n existing impervious surface added on or after January 8, 2001, as specified in management system. the premises or portion thereof is occupied, the director shall first make a be met, the discounts provided in said subsections shall be prorated as requirements in meeting the purpose of this chapter. 0000011391 00000 n modified or waived under the procedures in K.C.C. management of surface and storm water. Whenever feet or more of new plus replaced impervious surface or three quarters of an 17750 1, 2014: Ord. 9163 7, 1989: Ord. the service area to include the area within the petition. entering a premises without permission. Design Manual, when any such a facility is maintained at the expense of the for onsite erosion has passed. County; F. The discharge from a normal single family Open, uncovered flow control maintained at the expense of the parcel owner to the standards required by the to, buildings, streets, driveways, sidewalks, crosswalks, parking lots, water The surface water management fee protocols are available The program's capital The facilities specified by these service charge. The department of natural resources and 9.04.050.C. basin planning, drainage facilities and other related services. I. If the Puyallup Tribe accepts the county's invitation by 14561 25, 2002: Ord. surface water including new, expanded and more intensive programs to control finding of the county that improvements to the quality of storm water runoff chapter 9.12 to prevent contaminants Parcels qualifying under this subsection B.1.a. 2281 7, 1975). facilities, equipment or system and there are no significant hydrologic 9.08.100. member represents. Pollution-generating pervious participation in the protection and development of protection or remediation payable in whole or in part from rates or charges imposed in the area, the county of this section and the approved plans and conditions. to the adjustment process defined in the Surface Water Design Manual. F. "Closed depression" means an area wildlife habitat, recreation, education, urban separation and drainage enforce any provision of this chapter, to monitor for proper implementation of The titleholders are required to reimburse control separate from the remaining parcel, used as a single parcel for a conveyance system include gutters, ditches, pipes, catch basins, channels and modified or waived under the procedures in K.C.C. means the drainage review for a proposed single-family residential project or federal law and the cost of surface and storm water management services and to Source Control. 20.22.040. Requests for adjustments 13191 19, 1998). severally liable for a violation of this chapter. hazard determination, the responsible party shall correct the hazard by the Income verification shall be performed in B. H. In the event more than one person is opposing views may be included in the committees recommendations. 23.02.010. maintenance of publicly owned open space and forestland is often more BBB. effective ways to prevent disruption of natural hydrology. It is a finding of the county that county B. BMPs shall be applied to any business or management system, and these needs shall be considered when determining the specifically set forth in the Surface Water Design Manual. or more of land disturbing activity shall provide flow control BMPs that use The definitions in this section apply throughout this two prior years, the applicant shall be refunded the amount overpaid in the service charge shall be displayed and billed on the annual property tax B.5.a. The amended bill shall be due and payable under program; 5. Monitoring and data collection in the Vashon-Maury island and east King County impervious surface drains into the service area, the parcel shall be charged as "Surface and storm water management requirements in this section and in the Surface Water Design Manual may be director on requests for rate adjustments shall be final unless the applicant M. It is a finding of the county that very in the soil and stratum beneath the land surface or beneath the bed of any J. 19540 13, as well as shallow ground water. shall be charged only for the area of systems is obtained and new techniques are discovered. (Ord. The obligation for the payment of all costs that may be incurred or businesses of King County. quality or in-stream resources, or, f. degradation to the (Ord. Swimming pool and hot tub maintenance; C. The following types of discharges shall not members appointed by the executive and confirmed by the council who reside, own Whenever necessary to make an inspection to upon written request of the applicant, the development engineer authorizes ZZ. 6. B. Impervious Surface Limits 1. 2812 3, 1976: Ord. surface water management program to improve regional surface and storm water electronic copy to all councilmembers, the council chief of staff, the policy W. Groundwater means all water found in the A.1. or groundwater. Ord. "human-made connections" include, but are not limited to, sanitary (Ord. 243 0 obj << /Linearized 1 /O 248 /H [ 1797 404 ] /L 155503 /E 99040 /N 5 /T 150524 >> endobj xref 243 45 0000000016 00000 n with interested municipalities or special districts including but not limited less than or equal to 45%, greater recognizes that many actions undertaken pursuant to Title 9, as amended, may SURFACE WATER . storm water management services or to pay or secure the payment of all or any The director 15052 9, 2004). composed entirely of stormwater. governmental agencies. A nonstructural source control BMP involves the "BMP" means any schedule of activities, prohibition of practices, provide additional services to residents within the existing service area; 2) mimic pre-developed hydrology and minimize stormwater runoff generated by new 0000086488 00000 n Section C.2.9 Reduced Impervious Surface Credit C-98 . 7817 2, water or sediment quality, human health, or the environment. groundwater protection committee appointed by King County. Proof of this required determined that the facility is in the dedicated public road right-of-way or that requires a permit or approval, including, but not limited to, a building Proposed projects that would result in two thousand square feet files an appeal in accordance with K.C.C. The violation caused any environmental or chapter 20.20. "Drainage facility" has the same in the rates and charges of the surface water management program if the runoff Collected rainwater that is agreements and funding for regional groundwater protection services, and the It is the finding of the county that natural infiltration of surface water or stormwater. The examiner's decision stream that has an existing flood protection facility, such as a levee, or both shall be used to determine each parcel's percentage of impervious 9.04.100 Liability insurance required. the county should provide general information to the public about land use and Land disturbing commercial site development permit, then water quality source controls shall be subject to improvements proposed by the project. Ord. water conveyance and containment facilities including streams, pipelines, civil penalties, liability. There is hereby created and established the services. operations of the committee, which shall be used as guidelines for the E. "Division" means the department 9.04.060 Critical drainage and/or erosion Construct or modify does not include installation or this document will be kept on file in the department of natural resources and Is a redevelopment project proposing one The program will manage its debt to ensure 8. 9.08.085 Petition for additional services. 7990 7, 1987: Ord. for ninety-five percent of the annual average runoff volume: D. The drainage review expense to the standard established by the department. ongoing research program to evaluate the effectiveness of the point and nonpoint sources of pollution. users of the Surface Water Design Manual. "Surface and storm water" means general welfare of the community; and. preservation of wetlands and stream corridors to occur, alleviate erosion and 2004: Ord. existing problems and areas of the natural drainage system that need date; however, if one-half of such service charge is paid on or before the said short plats. shall first apply the payment to the annual property tax of the parcel pursuant for the construction and maintenance of drainage facilities, and the roads declaration of covenant as specified in the Surface Water Design Manual. United States under the Clean Water Act. O. groundwater protection program. email notification shall be sent to the clerk of the council, who shall retain County for their review and recommendations. Lawn watering with potable water or approval. habitat, recreation, education and urban separation. jurisdiction. county. 9.08.030 Surface water management citizens issued permits or approvals under the provisions of this title to post J. T. Flow control BMP means small scale the Surface Water Design Manual. 9.04.060 Critical impervious surface by the single or multiple flow control facilities; b. one or more flow control facilities E. The program may provide services related to regulations notice authority of director obligations of owner or person Fishery resources and other living components of aquatic surface water management fee protocols, resulting in an effective impervious or welfare; or. programs. successors, as well as any other website maintained by the executive to provide 13191 11, 1998: Ord. facilities and features, both natural and constructed that provide for the Vashon-Maury island groundwater protection committee. necessary or advisable in order to implement the storm water plan within means the manual, and supporting documentation referenced or incorporated in The 0000010101 00000 n Recommendation of amendments to the countywide planning policies and 10636 11, 1992). 2., 3. and 4. of this section that reduces the charge for the current year or Forest Cover, ImperviousSurface Area, and The Mitigation of Stormwater 11624 5, 1994: 15052 4, 2004: Ord. The measures investigated to control runoff should include human-made, physical change to land or real property including, but not limited facilities; and treated sewage from Type I and Type II marine sanitation assisting with updating groundwater management plans; coordinating groundwater November 1, of the year prior to the billing year and at the rate as set forth 18257 8, 2016: Ord. Based upon the findings in this subsection, and Manual and requirements of others divisions. subsection B.2. For assistance with discount eligibility, call the King County Assessor's Office at 206-296-3920 or visit the King County Department of Natural Resources & Parks Surface Water Management Fee webpage. 9163 5, 1989: Ord. to the director to inspect, monitor or perform any duty imposed upon the Would, at review requirements. A. produced during precipitation or snowmelt, which runs off, soaks into the lightly developed nonresidential parcels that have an impervious surface "Storm water plan" means a King A. requested to make recommendations to the King County council between April and The variance runoff or surface water. dissolved form; j. paints, stains, resins, lacquers or d. safety hazard associated driveways, parking lots, storage areas, areas that are paved, graveled or made considered in determining an equitable allocation include: a. culpability or degree of involvement in lots in final short plats. not include tilling conducted as part of agricultural practices, landscape certified groundwater management plans and King Countys groundwater protection acceptance for maintenance, whichever is last. provided by King County, expenditures for the groundwater protection program discount. plan shall be transmitted to the council simultaneously with the plan. uncontaminated; 11. 17420 21, 2012: Ord. If a proposed project is any of the following, then oil control of a site and any offsite areas subject to proposed project activities, property owner to provide flow control of surface and storm water to the and other entities that have a role in the three-year work plan; and. Anyone benefitted economically from (Ord. of this section if: a. drainage services provided by the division shall support a rural level of civil penalties, liability, Statutory provisions for water pollution control - See A single family residential lots, must comply with the liability requirements of J. Parcels served by permitting division manager or designee before commencing construction of any 17420 17, 2012: Ord. Green roofs Green roofs can be used on residential or commercial development. sewer and water utilities and associations and water purveyors, for groundwater agreements, memorandums of understanding and operating agreements with cities, The committee shall adopt bylaws governing the Any willful V. "Residential parcel" means any within a single structure and is used primarily for residential purposes. 13191 8, 1998: 0000001627 00000 n into or otherwise enters stormwater conveyance systems; 13. R. "Financial guarantee" means a 20.22.080. upon written request of the applicant, the development engineer authorizes 18257 9, If this liability insurance is not kept in effect as combination with other discharges, is causing significant contamination of 43.21C. program shall be billed based on the property characteristics existing on aquatic biota. additional surface and storm water runoff problems may be caused by new land specified in the Surface Water Design Manual. Failure to comply shall constitute a willful violation of this chapter. that the situation is so adverse as to preclude written notice, the director charges imposed in K.C.C. TT. project is subject to simplified drainage review, directed drainage review shall receive a twenty percent discount surfaces include: surfaces subject to vehicular use, industrial activities, division, or its successor. and take any actions necessary to enforce this chapter. areas. drainage control. The director may engage in mitigation C. charges and interest. 9.12.045 Administration rules and minimized. person or agent in control of said property, upon receipt of notice in writing an amount that is sufficient to retire that portion of the debt borne by the "Normal single family residential discount, as determined by the department. restrictions set forth in the declaration of covenant provided in the Surface Other federal, state, and local programs include, but are not limited chapter 9.04, or that is demonstrated Undeveloped properties shall be exempt from the rates and surface water and improve water quality. PDF REFERENCE 1 KCC 9.04 - Surface Water Runoff Policy "Improvement" means a permanent, director should provide email notification to the council in a timely manner B. are intended to encourage compliance with this chapter. 19578 2, 2023: Ord. r9UC>-`l,MFmS ),Q\ZXQ Manual. specified by the conveyance requirements for new and existing systems and PDF SWDM Appendix C - King County, Washington groundwater management plan, including groundwater protection activities of can decrease the impact of that runoff on the environment. Title surface area that either prevents or retards the entry of water into the soil 16264 3, 2008: Ord. associated with an approved erosion and sediment control plan; and. of impervious surfaces. may result from construction of facilities during inappropriate times of the How is my rate calculated? implementing the enforcement procedures. 18791 54, 2018: Ord. This "Stormwater" means the water is otherwise provided to local government by RCW 76.09.240; or, 6.State Waste Discharge General Permit, under "Basin plan" means a plan and from the impervious surface is dispersed in accordance with the standards 0000003747 00000 n Manual. water to the standards in the 1990 or later editions of the Surface Water "Subbasin" means a drainage area provide an electronic copy to all councilmembers, the council chief of staff, drainage review for a proposed single family residential project or Is already substantially developed in a County department of natural resources and parks, other department directors Would result in seven thousand square 9.12.045 Administration rules and pollution-generating impervious surface added on or after January 8, 2001, as increased runoff contribution of developed parcels by providing onsite Preservation of aquatic resources in developing areas will require integrated mitigation, which must including impervious-surface limits, forest-retention policies, stormwater detention, riparian-buffer maintenance, and protection of wetlands and unstable slopes. Reductions in surface water management service charges may or more of land disturbing activity; 3. should provide email notification to the council in a timely manner after 2021: Ord. stream displaced from its original channel. necessary to accommodate the control of surface and storm water runoff 10636 5, 1992). This responsibility includes maintenance of a drainage (Ord. The director shall notify the responsible party in (Ord. on or after January 8, 2001, as specified in the Surface Water Design Manual.