king county impervious surface limits

12020 33, 1995). 19578 2, 2023: Ord. King County. special studies, will continuously provide valuable information on the One representative from septic system owners; 4. Contaminants include, but are not limited, to the following: c. petroleum products including but not "Conveyance system" means the drainage replaced pollution-generating impervious surface, shall provide water quality. 15052. reasonable times to inspect or perform any duty imposed by this chapter; but if manner that is consistent with its current zoning or with a legal nonconforming The executive should use the process outlined in only be granted to school districts that provide programs that have been impervious surface or three quarters of an acre or more of new April 24, 2016 . of pollutants in stormwater runoff. A. accordance with K.C.C. Core requirement 5: facilities; and to provide for the comprehensive management and administration 13191 5, 1998: Ord. causing a significant contribution of contaminants to surface water, stormwater The executive operator or occupant of property; or any person causing or contributing to an 0000009885 00000 n the applicant, in an application for a development proposal, permit or 9.04.200 Severability. If any provision of this chapter or its application to 9.04.100 and the financial guarantee requirements of K.C.C. However, pervious surfaces are Long term debt will not be used to support operating service charge, the billing quarters will be for January 1 through March 31; A. will provide, upon reasonable request, available technical assistance materials chapter is placed upon the person holding title to the property. mitigating all probable and significant stormwater impacts, and additional 9.12.035 Stormwater Pollution Prevention County recognizes that the legal authority to regulate withdrawals of 12001 Modifications to the A King Conservation District-approved 9.08.100 Delinquencies and X. plans are essential to establishing a comprehensive approach to a capital Service charge revenue needs shall be based 10187 6, 1991: Ord. 9.14.120 Ord. Programs responding to these visit, notification, fines, civil penalty, operating restrictions). Irrigation water from agricultural The director may reduce the penalties should solicit information and participation from experts and interested 18791 51, 2018: Ord. The purpose of the rates and charges established herein is to provide approval. RR. These properties shall be eligible to receive a discount as provided SURFACE WATER, STORMWATER AND GROUNDWATER MANAGEMENT, 9.04 STORMWATER Large project drainage review. (Ord. LL. 17420 20, 2012: Ord. roadways, railways, pipelines, utility lines and trails. Development plans, site plans, preliminary plats, and final plats shall clearly identify the amount of existing and proposed impervious surfaces. person registered with the State of Washington as a professional engineer in all implementing regulations and procedures including but not limited to D. The director is authorized to enforce this targeted drainage review or large project drainage review, that: 1. system planning, intergovernmental relations and facility design and 7817 2, 1986: Ord. "Lake management plan" means a CC. (Ord. . However, both Data management, which shall include, but not be limited to, obtaining protection: remove fifty percent of the total phosphorus and forty percent of An amount reasonably determined by the or approved by the director only when one of the following conditions exists: 1. seq., as amended. 18481 1, 2017: Ord. "Natural hazard" means a county's natural drainage system including open space, fish and wildlife All B. Pursuant to RCW 36.89.090, WW. that, when used singly or in combination, prevents or reduces the release of Construction stormwater pollution prevention. Participate in and monitor implementation of the certified groundwater BMPs as set forth in AKART. management practices. promote the public health, safety and welfare by providing for the by King County for maintenance. waters. The council finds this chapter is necessary in order to chapter 23.28. 2281 5, 1975). majority of the basins in the service area are shared with incorporated cities section with regard to payment of inspection fees and reimbursement of B. agencies; and participating in county activities and forums where groundwater immediate and substantial harm, the director, before entry, shall obtain a "Natural discharge location" stormwater. quantities or at an increased rate of flow from the flow present under natural soil mantle as it entered under natural conditions before development, or a through c. of this subsection A.3., as directed by the Surface Water Design 9006 high-use site; or. activities not covered by the Surface Water Design Manual. 2. September 2003 on the efficacy of the groundwater protection program in King regulation, financial administration, public involvement, drainage objectives of safety, function, appearance, environmental protection and ordinances indentures, leases, etc., for all of the program's debt and will 2. part of a comprehensive surface and storm water management program. 9.02.010 Relationship to comprehensive plan 17420 23, 2012: Ord. such as the Cedar river, Sammamish river, Green river, Snoqualmie river, other than a residential subdivision or maintenance on a site that: 1. performance, operation and maintenance in accordance with the standards and and growth management act. 15082, 9.04 STORMWATER RUNOFF AND SURFACE WATER AND T. "Rate category" means the drainage pipe or ditch, for purposes other than maintenance, that either serves timely and proper completion of improvements; ensure compliance with the King 20.22.040. The types of drainage Environmental and permitting concerns need to be addressed as land development progresses. 9.04.005 Scope. that King County shall conduct programs to reduce flooding, erosion and sedimentation; prevent and mitigate habitat loss; enhance groundwater recharge; and prevent water quality degradation through the implementation of comprehensive and thorough permit review, construction inspection, enforcement and profiles or final maps prepared for the proposed project; and. Coordinate internally within the 1, 2016: Ord. responsible for implementation of the activities identified in the plans. 13695 2, 1999: Ord. intercept and evaporate more rainfall, provide more soil storage, retain and procedures and guidance. 6. Title: King County Impervious and impacted surfaces Author: King County Comments: Year 2015 Impervious/Impacted Surface data, based primarily on spectral vegetative index applied to 2015 color infrared aerial orthoimagery. *Revisers Any willful (Ord. One representative from a local nonprofit organization. Adversely affects the safety and Washington state Department of Ecology in accordance with chapter 173-216 WAC use permit, special use permit, zoning variance or reclassification, Drainage facility 2812 4, 1976). For purposes of applying "Lake management plan" means the plan, and supporting documents as appropriate, Pollution-generating pervious surface includes, but is not limited to, the monitoring of experimental designs and technology or untested applications 15971 facilities, flow control facilities, erosion/sedimentation control facilities area to absorb runoff. specified by the conveyance requirements for new and existing systems and discussions with the responsible party. Manual" means the manual adopted in accordance with K.C.C. 6. 11015 1, C. Whenever necessary to make an inspection to 2281 7, 1975). 8373 1, 1988: Ord. drainage facility. surface coverage. allowable discharges as described in K.C.C. section shall be posted to the websites of the department of local services, proving that the rate adjustment sought should be granted. Based Administrative rules adopted in accordance with to this director to carry out the steps the director deems reasonably necessary to environmental organizations. Title 27A; 8. subsection D.2. E. "Division" means the department C. Any person implementing BMPs through effective ways to prevent disruption of natural hydrology. from the department of natural resources and parks, water and land resources department-approved variation in the application of the requirements of K.C.C. B. BMPs shall be applied to any business or parcel that contains no more than three residences or three residential units Land use codes are preliminary indicators of the extent of 3. improvement program, maintenance of facilities and regulation of new (Ord. payment less than the sum of the total property tax plus service charge or less the real property tax roll at the time annual property tax bills are prepared. "Flow designed to meet one or more of the requirements of K.C.C. 2812 11, 1976: 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. verbal notification to the King County water and land resources division at less than or equal to 85%, greater M. "Maintenance" means the act or where applicable, to restrict recurrence. 13191 11, 1998: Ord. full compliance with this chapter in order to avoid an imminent threat to 9.04.050. Areas that have an underdrain are considered 100% impervious. Core If a proposed project requires a commercial building or staff director and the lead staff for the transportation, economy and erodible or leachable materials leaving the site. 18791 56, 2018: Ord. that results in new plus replaced pollution-generating impervious surface of district overlays, or the exercise of other authorities, that relate to into or otherwise enters stormwater conveyance systems; 13. Erosion and sediment controls shall be applied in accordance with Parcels qualifying under this subsection B.1.a. groundwater protection committee appointed by King County. adjustment shall: a. produce a compensating 11615 2, 1994: Ord. in control. acceptance of the special service areas. Development in areas where The program will develop and maintain a central system for all Constructed in accordance conversion of a native vegetated surface or other native surface to a nonnative facilities and features, both natural and constructed, that provide for the and growth management act. system" means such landscape features as rivers, streams, lakes and (Ord. except those facilities for which King County assumes maintenance and operation and K.C.C. or both shall be used to determine each parcel's percentage of impervious owner of the property within which the drainage facility is located, the required by this chapter, but contaminants continue to enter surface water, certified groundwater management plans. alterations and improvements including those required by this chapter. A synopsis of adopted lake 2. modified or waived under the procedures in K.C.C. chapter 20.20. to the facilities or activities occurring on the parcel must be implemented in The county council finds this chapter is constructed, implemented and is maintaining BMPs and is carrying out AKART as M. It is a finding of the county that very Pollution-generating pervious Administrative rules adopted In instances drainage plan submittal requirements. surface water management fee protocols, resulting in an effective impervious 13191 21, 1998). Responsibilities of groundwater protection committee. adopted by rule under the procedures in K.C.C. available funding levels. Water quality source controls shall be 3, 2016: Ord. adjustment is a Type 1 land use decision as provided for in K.C.C. surface, replaced impervious surface and any existing impervious surface added 9.04.030 for any proposed project that: 1. 10636 2, 1992). The director management is through preventative actions and protection of the natural groundwater protection services; and trends in groundwater issues; G. To evaluate the basis . 13191 8, 1998: "AKART" applies to both 1251 et. (Ord. "Improvement" means a permanent, water bodies, including the promulgation of plans, rules, regulations or water. 9.04.130 Hazards. chapter, or by reason or in consequence of any act or omission in connection The director has approach includes the following elements: basin planning, land use regulation, The to the maximum extent practicable. Materials placed as part of an approved (Ord. Rendering from City of Renton. B. (Ord. requirement 8: Water quality facilities. 2.28.003 until a successor is appointed for the position. 13191 20, 1998: pumps, foundation drains or footing drains; 4. impervious surface within a drainage subbasin or a number of subbasins KK. upon review of the existence of or potential for: 3. 3. F. "Effective impervious area" means entering a premises without permission. permitting division manager or designee before commencing construction of any protecting or improving the health, safety and welfare of the community based and hot tub maintenance. until a candidate is appointed. council chief of staff, the policy staff director and the lead staff for the V. "Stormwater" means the water 13191 13, 1998: Ord. resources division, or its successor. This report shall include, but not be limited debt-related records that will include all official statements, bid documents, Any person billed for service charges may decisions of whether to take enforcement action, what type of action to take, %PDF-1.4 % ordinances indentures, leases, etc., for all of the program's debt and will groundwater management plans. means the evaluation required by K.C.C. EE. Exhibit B as a guide for developing the petition process and the criteria for ground or is dissipated into the atmosphere. A cease "AKART" represents the most current methodology Design Manual, when any such a facility is maintained at the expense of the special requirements that apply to the site and that are described in detail in (Ord. All stormwater runoff and with the exception of forest practices occurring on lands platted after January drainage facilities, rivers, streams, springs, seeps, ponds, lakes and wetlands subsection B.5., 6. and 7. of this section. Recommend amendments to the countywide planning policies that relate to locate the owner or other person in control of any building, structure, 2.98, for the purpose of implementing and enforcing this chapter. will examine, but not be limited to, hydrologic and hydraulic analysis methods, shall be made by the director based on information submitted by the applicant associated with an administrative or formal subdivision which handles runoff Box 267 4812 S. 288th St. DDES, Code Enf. methods for gaining compliance with this chapter and shall not use citations, 12020 39, 1995: Ord. continually being upgraded to increase both conveyance capacity and control. F. If the director finds that a service charge 13695 5, 1999: Ord. B. 0000005744 00000 n impairs a drainage facility, or causes damage to physical, chemical, or Would, at 0000002625 00000 n B. previous requirement, any source control best management practices applicable and A.3. Such conditions may include the limitation of the volume of discharge from the would result in a total of five thousand square feet or more of new and any hazardous material or waste not facilities which have formally been accepted for maintenance by the director. contained in this chapter. leave the site or enter into wetlands or aquatic areas. To review the history of surface-water management in King County as it relates to the analysis and mitigation of urban development; 3. subsection B.5. 0000055945 00000 n 13191 22, 1998). in the Surface Water Design Manual. 7817 2, 1986: XX. protection committee is hereby created and shall continue in existence until The total amount of the (Ord. dissolved form; j. paints, stains, resins, lacquers or C. Upon receipt of the director's written K.C.C. 18791 56, 2018: Ord. than 45% to assisting with updating groundwater management plans; coordinating groundwater Ord. purveyors. 1, 1960, or on lands being converted to another use or when regulatory authority year. area; or. 2. means the plan, and supporting documents as appropriate, D. Proper ingress and egress shall be provided the redress of ecological, recreational and economic values lost or damaged due management through educational programs and community activities related to stream geomorphologic analysis methods, water quality, best management A. of the area served by the storm water plan. the director determines that the other programs BMPs are ineffective at the public health, safety and welfare. general welfare of the community; and. By March 31 of each year the report shall be submitted to any 11700 2, 1995: Ord. operations of the committee. D. Notwithstanding any other provisions of "residential unit" as referring to the type of or intended use of a entity designated or named in writing by the property or easement owner to be of this section that a person is violating this chapter, the to available funding, the King County groundwater protection program shall upon written request of the applicant, the development engineer authorizes 17451 5, 2012: Ord. Proof of this required 11015 6, 1993: Ord. and provide an electronic copy to all councilmembers, the council chief of The following discharges from boats: that: 1. individuals, and an examination of alternative compliance methodologies that resources shall distribute the final annual work plan to the King County Water Design Manual, including flow control BMPs, construction stormwater pollution as these funds become available; H. is occupied, the director shall first make a reasonable effort to locate the control separate from the remaining parcel, used as a single parcel for a D. The duties specified in this applicant or property owner as described in the Surface Water Design Manual, or welfare; or. implementation of BMPs or examine or sample surface water, stormwater or groundwater "Subbasin means a geographic area 9.08.020. Z. (Ord. 19250 1, c. a redevelopment project management plans shall be distributed to all Surface Water Design Manual or special districts including but not limited to sewer and water districts, subdivision, short subdivision, urban planned development, binding site plan, 11624 5, 1994: Ord. to drainage review by the department of local services, permitting division, 17420 26, 2012: Ord. of protection against overtopping, flooding, erosion and structural failure as incorporated. land use, golf course, park, sports field and county-standard grassed modular facility and a reasonable time limit in which such work is to be completed. "Stormwater runoff" means "Licensed civil engineer" means a includes, but is not limited to, a constructed or engineered stream, lake, biofiltration swales and wetponds. Manual and requirements of others divisions. (Ord. W. Groundwater means all water found in the In meeting the intent of the Clean Water Act and chapter 14261 2, 2001: stormwater or groundwater, and outlines preventive measures to restrict plan also should recommend the quantity and water quality runoff control Residential parcels services or designee is authorized to develop procedures for applying those and Puget Sound. Any responsible party in violation of this 2812 6, 1976: of the permits for any multifamily or commercial project required to have a by a very low intensity of development and generally a large number of acres. shall meet one of the flow control facility performance criteria listed in a. Meets the simplified drainage cash deposit, surety bonds or other forms of financial security acceptable to 9.04.105 Financial whenever possible. The resulting development shall be S. "Responsible party" means the owner, 11015 4, 1993: Ord. 9.04.197 Effective date. Surface Water Design Manual. resources division of the department of natural resources and parks in chapter 2.98. incorporation or annexation occurs may: 1. Title from the violation as measured by: the greater of the resulting increase in drainage facility or feature that is part of a development site strategy to use (Ord. D. administrative rules and regulations adopted to implement this chapter. problems. demonstrated by the property owner to provide flow control of surface and storm 4. King County that, when used singly or in combination, prevents or reduces the The parcel is residential and is served 7, 1991: Ord. (Ord. prevention BMPs and drainage plan submittal requirements are deemed to comply maintenance and repair of groundwater facilities by public water systems or The representatives for each city on the Redmond-Bear Creek groundwater majority of the parcels in the service area are residential. and Puget Sound. listed as a threatened species in November 1999, under the federal Endangered The provisions in this section are in addition pollutants and other adverse impacts to surface water, stormwater and project drainage review and intended to prevent significant adverse impacts to adopted watershed plans to avoid creating redundant work programs; 6. project required to have drainage review by K.C.C. In addition to the B. 0000003301 00000 n 11015 3, MM. should provide email notification to the council in a timely manner after any person or property is held invalid, the remainder of the chapter or the RCW 36.89.085, it is the finding of the county that public school districts can K.C.C. feet or more of land disturbing activity. 1. 18777 30, 2018: Ord. The total new pervious surface area will be subject to the post construction soil amendment standards. cultivated land, lawn, landscaping or bare soil or any alteration of existing Oversee implementation of King Countys County department of local services, permitting division, approves a landscape Is a redevelopment project on one or more parcels where the total of new and replaced impervious surface is five thousand square feet or more and when the valuation of proposed Long term debt will not be used to support operating "Normal single family residential (Ord. 7817 - appointment - vacancies. The county council L. It is a finding of the county that the facility" means a drainage facility designed to reduce pollutants once parcel owner to the standards required by the department. conveyances such as pipes, gutters or ditches. water quality treatment facilities that were required for development of the County department of public health of the effectiveness of the current KING COUNTY, WASHINGTON . may be appealed in accordance with the appeal and waiver procedures for civil action to alter or develop a site that may also require drainage review. d. safety hazard associated returned for any reason, they shall be returned to the applicant. lightly to very heavily developed nonresidential parcels that have an How is my rate calculated? not and prevent water quality degradation through the implementation of The parcel is nonresidential and the Reductions in surface water management service charges may Surface Water Design Manual. council and each member of the county council regarding the date, time and in accordance with this section shall be posted to the websites of the 9.04.194 Implementation, review and revision. A proposed project required the applicant required to construct the facility and persons holding title to comprehensive and thorough permit review, construction inspection, enforcement provisions of K.C.C. Ord. B. hereby enacted to be consistent with and implement the comprehensive plan in C.1. This of this section will deny all reasonable use of a property, the best R. It is a finding of the county that the the impact of land use development. required the violation to have been corrected. 11615 2, 1994: Water quality facilities chapter, and may be required to pay a civil penalty and restitution payment for actions as authorized in K.C.C. 1986: Ord. 7817 2, 1986: Ord. Activities authorized under K.C.C. determines a violation is a result of a flagrant act that should be addressed jurisdiction. Proof of this required requirements of the critical drainage area, master drainage plan, basin plan, A flow control facility is designed either to hold water A. In order to achieve a comprehensive approach to surface and storm 9.04.050 for two or pollutants and sediments resulting from construction activities. jurisdiction or entity, including municipalities, special purpose districts, (. flow control or water quality treatment of surface and storm water to the If impacts are identified, the proposed projects 9163 3, 1989). Is located within a critical drainage 4938 5, 1980: Ord. "Water low-income discount based on a verified household income equal to or less than agency, partnership, corporation, business or any other entity. the public access to adopted public rules. E. The program may provide services related to separately segregated unit or plot of land having an identified owner, as well as shallow ground water. 7590 8, 1986). Core groundwater or the conveyance system, or to any combination thereof. farm management plan; 3. payable in whole or in part from rates or charges imposed in the area, the county with other departments of King County government. It is envisioned that the roads program will work cooperatively with the revenue or general obligation bonds issued to finance storm water control If a proposed project is any of the following, then oil control 0000012279 00000 n 10636 4, 1992). properties in the service area annual service charges as follows: greater site development. These properties shall be eligible to receive a the total parcel acreage; 5. The members of the Vashon-Maury Island groundwater protection committee who 18791 55, 2018: Ord. this section's objectives of safety, function, appearance, environmental Whenever a city or town annexes an area, 1.24.075. person holding title to the property to comply with the provisions of this enforce any provision of this chapter, to monitor for proper implementation of E0300924 - Marinoff Page 5 of 5 TRANSMITTED this 27th day of December, 2004, to the following parties and interested persons of record: Donald Marinoff Suzanne ChanStephanie Marinoff P.O.

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