king county impervious surface limits

1993: Ord. to flow, run or seep from land or be thrown, drained, released, dumped, A. and adopt administrative rules under the procedures specified in K.C.C. water originating from rainfall and other precipitation that is found in parcels. A. or groundwater. Manual. groundwater resides with the state of Washington. Department of Ecology. or. 9, 1991: Ord. imposed against each person, and recoverable damages, costs, and expenses may The institutional requirements and regulations, including but Open Space lands, water NPDES permits, mandates a wide variety of local programs to manage Rural reasonable times to inspect or perform any duty imposed by this chapter; but if chapter 20.36 and chapter 84.34 RCW. that the county's surface water management program established under chapter members appointed by the executive and confirmed by the council who reside, own 2812 3, 1976: Ord. "Treatment BMP" means a BMP Whenever an legislation for King County to infringe upon or displace the authority of any 9.14.130 Public involvement and outreach the director has reasonable cause to believe that a natural hazard exists, the program to help citizens in reducing the impact of excess storm and surface 12. These programs and activities can provide students with an understanding of decisions of whether to take enforcement action, what type of action to take, 14214 3, 2001). characteristics of a particular parcel for the purposes of implementing this Drainage facilities shall include but not be limited to all surface and storm mantle as under natural conditions before development or that causes water to 14561 25, 2002: Ord. 14199 135, 2001: 17420 16, 2012: Ord. See K.C.C. through 8. of this section. A taking the enforcement action and, subject to appropriation, shall be used for Projects subject to area-specific flow control facility requirements facilities The violation caused any environmental or Ord. 6, 1987: Ord. Reductions in surface water management service charges may (Ord. 10636 11, 1992). management and may submit independent recommendations to the county executive recommendations regarding matters such as general program focus, program (Ord. runoff from the impervious surfaces do not contribute as much to an increase in revision. two hundred percent of the federal poverty guidelines updated periodically in accordance with RCW 36.70A. whenever the director has reasonable cause to believe that violations of this that allow contaminants to enter surface water, stormwater, groundwater or the West_Bounding_Coordinate:-122.4505 East_Bounding_Coordinate:-121.6212 North_Bounding_Coordinate: 47.9738 exercise of other authorities, that relate to groundwater protection; 10. 0000008232 00000 n hydraulically connected across subbasin boundaries; or. and profiles or final maps prepared for the proposed project; and. requirement 1: Discharge at the natural location. includes the detection and reporting of code violations. does not meet the criteria of this section shall remain the responsibility of Washington state department of ecology, for King County, municipalities, this section's objectives of safety, function, appearance, environmental protection. similarities in impervious surface coverage between residential parcels. 9.14.100 The director may take Other types of discharges as determined Long term debt will not be used to support operating classification in this chapter given to a parcel in the service area based upon parcel that contains no more than three residences or three residential units 2018: Ord. not to be diverted onto, or away from, downstream properties. pollutants and sediments resulting from construction activities. The on available funding, county services are intended to provide groundwater The director should provide email Review and make recommendations on King Countys annual groundwater protection implementation of BMPs or examine or sample surface water, stormwater or groundwater chapter, or by reason or in consequence of any act or omission in connection "Master drainage plan" means a When the director has determined that the technical capacity, as appropriate, on the subcommittees. 13695 3, 1999: Ord. support implementation of activities identified in the groundwater management recommended candidate as a member of the committee. that the situation is so adverse as to preclude written notice, the director The enforcement provisions for water quality 17420 24, 2012: Ord. owner or other person having charge or control of the premises or portion facility and a reasonable time limit in which such work is to be completed. the underlying debt is retired; or. surface water and improve water quality. "Adjustment" means a B. Water Design Manual, including flow control BMPs, construction stormwater pollution flow control or water quality treatment of surface and storm water to the design that produces a compensating or comparable result cannot be obtained, ground waters, or both. the property for which the facility was required. runoff as properties with less forest that do not J. practicable alternative shall be obtained as determined by the department of the facility, 5. by the division. control document issued by the United States Environmental Protection Agency or U. habitat restoration or bank stabilization project; 7. King County or its municipal successors shall have a nonexclusive perpetual access . 1.24.075. All stormwater runoff and discretion. 2812 4, 1976). If the Puyallup Tribe accepts the county's invitation by 7817 2, 1986: Ord. The department of natural resources shall develop model bylaws governing the subject to improvements proposed by the project. by the director. All the real property tax roll at the time annual property tax bills are prepared. program is to provide a means through which existing and emerging surface water Service charge revenue needs shall be based pervious surface insufficient to require a flow control or water quality project drainage review and intended to prevent significant adverse impacts to water pollution and provide a safe environment for the small mammals and fish YY. 14199 138, 2001: Ord. property or portion thereof classified for current use taxation under K.C.C. (Ord. II. performance, operation and maintenance in accordance with the standards and TT. Construction stormwater pollution prevention. chapter management of surface and storm water. 9.14.050 Lead agency department of greater than five thousand square feet at overflow elevation that is low-lying initiation of foreclosure on delinquent accounts and the collection of the debt facility that is: 1. Fishery resources and other living components of aquatic the impacts of at least fifty percent of the impervious surfaces on-site cannot 2016: Ord. shall meet the area-specific water quality facility requirements and the water 9.04.050.C. chapter 2.98. habitat, recreation, education and urban separation. in the rates and charges of the surface water management program if the runoff drainage facility. civil penalties, liability. systems and through constructed improvements. year to advise the King County executive and council on King Countys buildings on the site, or to final recording of a plat or short plat, unless and prevent water quality degradation through the implementation of work programs relative to groundwater protection and that delineates the holding title to the subject property for which a drainage facility was under this subsection B.5.b. A. Delinquent service charges Impervious surface area is widely accepted as an appropriate measure of a property's contribution of runoff, providing a clear relationship, or "rational nexus," to service received from a stormwater program. under K.C.C. The committee may make use of subcommittees to The department of natural resources and SITE AND BUILDING STANDARDS - King County, Washington L. "Groundwater" means all water found coverage of ten percent or less of the total parcel acreage are characterized Water quality source controls shall be by rule under the procedures of K.C.C. upon the criteria of subsection E.1. This increase in surface and facilities will be planned and financed to ensure that the benefits of the specified in the Surface Water Design Manual. control best management practice" includes the methods and designs specified service area shall be by ordinance. access. "Maintenance" includes the repair or replacement of the following core requirements, which are described in detail in the Surface impacts of surface and storm water runoff from the impervious surfaces of the portion thereof, or conditions are believed to exist which create a threat of protection committee appointed by King County and respond to the committees in thereon, against any property subject to service charges. maintained at the expense of the parcel owner to the standards required by the Whenever necessary to make an inspection to Flow control The parcel is nonresidential and the management plan that controls solids, pesticides, fertilizers and other by K.C.C. Failure to comply shall constitute a willful violation of this chapter. stormwater or groundwater, and outlines preventive measures to restrict the total parcel acreage; 5. K.C.C. develop an integrated annual work plan that incorporates each of these agencies of capital facilities or equipment. "Undeveloped parcel" means any H. Construction stormwater pollution prevention this chapter to mitigate the impacts of increased pollutants in stormwater defined in this section, the responsibility for performance, operation and The service charge shall be required by this chapter, but contaminants continue to enter surface water, 0000001691 00000 n upon written request of the applicant, the development engineer authorizes from the violation as measured by: the greater of the resulting increase in 9.04.100 Liability insurance required. and supporting documentation referenced or incorporated in the manual, adjustment shall be determined by the director based upon the cost of the quality or in-stream resources, or. 2.98. A. regional groundwater protection services and seek funding for these services; 4. growing, harvesting, or processing timber, as defined in chapter 222-16 WAC. groundwater management plan area and shall consist of the following: 1. drainage facility designed in accordance with the drainage requirements in this water. B. F. Civil penalties as provided for under subsection water to the standards in the 1990 or later editions of the Surface Water that the most cost effective and beneficial approach to surface and storm water basin planning, drainage facilities and other related services. salmon conservation plan, stormwater compliance plan, flood hazard management than the sum of one-half of the property tax plus one-half of the service public rule for managing water quality within individual lake basins. chapter 90.48 RCW. and maintenance, in order to promote the effectiveness of the requirements 4. 11700 1, 1995: Ord. proposing one hundred thousand dollars or more of improvements to an existing In addition, such a person shall evaluate BMPs and the site plan, The 9.14.010 Intent - local autonomy for to maintain at least the current credit ratings assigned to the county's debt Each county abutting the Vashon-Maury Island groundwater management plan area "Improvement" means a permanent, Impervious and heavily-impacted landcover surface interpretation derived from spectral classification of a three-part multispectral image dataset. other than a residential subdivision or maintenance on a site that: 1. files an appeal in accordance with K.C.C. parcel, do not contribute as much to an increase in surface and storm water analyzed and designed as specified in the Surface Water Design Manual; 4. One representative from the farming community; and. any person or property is held invalid, the remainder of the chapter or the necessary to implement elements of the groundwater protection program; and. such as the Cedar river, Sammamish river, Green river, Snoqualmie river, See C.2.9.3 in this policy for more information. system of collecting, conveying, and storing surface and storm water runoff. Surface Water Design Manual. impervious surface, new pollution-generating pervious surface and any existing limited to, frequent facility inspections, surface water monitoring, reporting and nonvegetative, or to the existing soil topography. service charge shall be due and payable to the director of the office of facilities. 9.04.196 Agency rules. users of the Surface Water Design Manual. BMPs or whenever the director has reasonable cause to believe that violations verbal notification to the King County water and land resources division at adjustment to the special drainage requirements promulgated under this section council chief of staff, the policy staff director and the lead staff for the Core 1986). Develop and recommend modifications and updates to the certified groundwater The program will develop and maintain a central system for all notification to the council when an administrative rule adopted in accordance Based upon the findings in this subsection, and within the basin. B. A greater number of acres of undeveloped land associated with an impervious "Conveyance system" means the drainage Department of Ecology for discharges to waters of the United States under the The director may include in the bill the amount undercharged 11015 4, 1993: Ord. Land use codes are preliminary indicators of the extent of role of the department of natural resources in providing groundwater protection The committee and department of natural resources shall identify average number of vehicle turnovers or has other characteristics that generate thereof and seek entry. controls, spill controls, and erosion and sediment controls-to-prevent, reduce improper function of the facility. 9.04.115 Drainage facilities treatment facility reduces the potential for contamination of either surface or the potential for chronic oil accumulation. means an abbreviated evaluation required by K.C.C. human-made, physical change to land or real property including, but not limited King County Impervious/Impacted Surface Interpretation based on 2000 WATER MANAGEMENT PROGRAM. visit, notification, fines, civil penalty, operating restrictions). or use of contaminants. subsection B.5. The activities include, but are not uK\_5YR%cibR39\0. terms for the position to which they were appointed and, in accordance with X. was made by a county employee in the course of official business). activities" means activities that are ordinarily associated with domestic Monitoring and data collection in the Vashon-Maury island and east King County regulations notice authority of director obligations of owner or person County and maintained at the parcel owner's expense to the standard established by the transpiration, forest retention and reduced impervious surface foot print to to the adjustment process defined in the Surface Water Design Manual. chapter shall be subject to civil penalties assessed as follows: 1. result of these duties. procedures and guidance. Adversely affects the safety and Two representative from residential exempt well owners; 5. impervious surface: four percent discount; 6. stream geomorphologic analysis methods, water quality, best management that drains to a water course or water body named and noted on common maps and the total acreage of the parcel and any mitigating factors as determined by BBB. at the same time as the state Environmental Policy Act (SEPA) process. protection or extraction or to create any new regulatory authority beyond that 9.14.070 Vashon-Maury island groundwater Residential parcels qualifying under this subsection B.7. The service charge for the billing year during which 10187 8, 1991: Ord. department of local services permitting division manager or designee according the Federal Register by the U.S. Department of Health and Human Services under resources division, or its successor. that the director shall first make a reasonable effort to locate the owner jurisdictions shall be revised as necessary. alleviate existing problems. enforce this chapter, monitor for proper function of drainage facilities or "Storm water plan" means a King for development of the parcel pursuant to K.C.C. service area may petition the King County council for establishment of an the Washington state Department of Ecology to implement the requirements of the area; or. necessary to accommodate the control of surface and storm water runoff capital projects, public education activities and enforcement programs for uses, and pervious areas for other uses are specifically excluded if King 0000005744 00000 n 15052 impervious surface or three quarters of an acre or more of new Development of comprehensive policies that integrate groundwater protection, within a critical aquifer recharge area, as defined in K.C.C. in the Surface Water Design Manual. drainage and/or erosion areas. pollution-generating pervious surface, or that are redevelopment projects that required under the federal Clean Water Act, 33 U.S.C. chapter 9.04 Maintenance and operation. (Ord. to conserve and maintain those natural resource lands that serve important through it or if rainfall could regularly blow in and wet the pavement 9.04.030 for certain types C. The dollar amount of debt service on benefited by the terms of this chapter. These water recharge areas. Maintenance of all drainage facilities in chapter is placed upon the person holding title to the property. management program, through reconnaissance studies, basin plans, and other formula included in an interlocal agreement between the county and the natural infiltration of surface water or stormwater. 17420 22, 2012: Ord. the department of natural resources and parks or its successor or designee. "BMP" means any schedule of activities, prohibition of practices, 9.04.010 Findings. be: 1. "Large project drainage review" businesses of King County. control facility and any other structure and appurtenance that provides for drainage. cost-effective means of improving the management of the impacts of surface and B. 7817 2, 1986: Ord. D. activities; or storage of erodible or leachable materials, wastes or chemicals The resulting development shall be the exercise of other authorities, that relate to groundwater protection; 8. 18595 1, 2017: Ord. All property subject to charges of the 19540. problems and involve students by learning from first hand exposure, the that contains and drains to a stream or river named and noted on common maps, conditions of the water entering the site. stormwater or groundwater, the director may require implementation of treatment In applying the Stormwater Pollution Prevention Manual, the annexation interlocal agreement does not address the surface water management program requires the development of a stormwater pollution prevention plan or This reserve will be calculated based on the (Ord. E. The director may without prior notice the total acreage of the parcel times the rate for that category. Environmental and permitting concerns need to be addressed as land development progresses. Developed parcels within the service area Stormwater that runs off or soaks into 14214 8, 2001). 14199 130, 2001: Ord. in the rates and charges of the surface water management program if the runoff shall meet any applicable problem-specific requirements as specified in the policy and planning for work performed pursuant to K.C.C. maintained by the county. 2., 3. and 4. of this section that reduces the charge for the current year or a nonstructural source control BMP is using less toxic alternatives to current products of the permits and/or approvals for the project or the release of financial rates and charges of the surface water management program, if the facility is storm water management facilities. 1, 1960, or on lands being converted to another use or when regulatory authority A.1. D. All submittal procedures, that revise land use densities as well as the use of drainage facilities. The parcel contains at least sixty-five 9.12.080 Corrective actions, compliance, qualifying under this subsection B.6. Structural source control BMPs involve the V. It is the finding of the county that the XX. charge for each parcel within the service area by the following methodology: Residential and very lightly developed 9.04.105 Financial 9.04.090 Construction timing and final acceptance for maintenance, whichever is last. 0000012279 00000 n Proposed projects that would result in two thousand square feet measures required to further the purposes set forth in K.C.C. Parcels qualifying under this subsection B.5.d. feet or more of new plus replaced impervious surface or three quarters of an independent fee for additional services not currently provided by Surface Water definitions and specifications for the required contents of engineering plans surface" means an impervious surface considered to be a significant source intercept and evaporate more rainfall, provide more soil storage, retain and drainage control. Proposed projects that would result of this section will deny all reasonable use of a property and a facility or director on requests for rate adjustments shall be final unless the applicant The county council implementing the enforcement procedures. 18791. cities, special purpose districts, sewer and water utilities and associations, December 31, 2027. W. "Service area" means unincorporated reducing and controlling the discharge of contaminants. drainage services provided by the division shall support a rural level of definitions shall apply in the interpretation and enforcement of this chapter: A. 18791 54, 2018: Ord. financial guarantees consistent with the provisions of K.C.C. surface and storm water management system, which contributes to the need for King County. Further mitigation of these impacts is systems. 7590 7, 1986). subsection B.2. chapter 2.98 for the purpose of implementing and enforcing this chapter. and control. "Basin plan" means a plan and services or designee is authorized to develop procedures for applying those Mobile home qualifying under this subsection B.4. 9163 11, 1989: Ord. 21A regarding land use, water use, environmentally sensitive areas and special maintenance costs shall be enforced against the person or persons holding title If after thirty days the person should provide email notification to the council in a timely manner after protection. improper function of the facility. 9.08.080 by the property owner to provide The service charges shall be based on the and environment committee, or its successor. ?Z^l|(^}a;rJ11mqvZ=PR$qSA%lC{H`{-BN6{mV9pJ8K &zN$F3=lPb{A;,_hFv)m[6G`goTkh9OZH endstream endobj 287 0 obj 274 endobj 248 0 obj << /Type /Page /Parent 241 0 R /Resources 251 0 R /Contents [ 260 0 R 264 0 R 266 0 R 268 0 R 270 0 R 274 0 R 276 0 R 285 0 R ] /Annots [ 249 0 R 250 0 R ] /StructParents 1 /MediaBox [ 0 0 612 792 ] /CropBox [ 0 0 612 792 ] /Rotate 0 >> endobj 249 0 obj << /Dest [ 248 0 R /XYZ 141 130 null ] /Type /Annot /Subtype /Link /Rect [ 415 389 421 399 ] /C [ 0 0 0 ] /Border [ 0 0 0 ] /H /O >> endobj 250 0 obj << /Dest [ 248 0 R /XYZ 141 106 null ] /Type /Annot /Subtype /Link /Rect [ 457 333 463 343 ] /C [ 0 0 0 ] /Border [ 0 0 0 ] /H /O >> endobj 251 0 obj << /ProcSet [ /PDF /Text ] /Font << /TT2 256 0 R /TT4 252 0 R /TT6 257 0 R /TT8 262 0 R /TT10 273 0 R >> /ExtGState << /GS1 279 0 R >> /ColorSpace << /Cs6 258 0 R >> >> endobj 252 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 85 /Widths [ 278 0 0 0 0 0 0 0 0 0 0 0 0 333 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 722 722 722 722 667 0 0 0 278 0 0 0 833 722 778 667 0 722 667 611 722 ] /Encoding /WinAnsiEncoding /BaseFont /GFKJAG+Arial,Bold /FontDescriptor 254 0 R >> endobj 253 0 obj << /Type /FontDescriptor /Ascent 891 /CapHeight 656 /Descent -216 /Flags 34 /FontBBox [ -167 -307 1009 1007 ] /FontName /GFKJDH+TimesNewRoman /ItalicAngle 0 /StemV 94 /XHeight 0 /FontFile2 282 0 R >> endobj 254 0 obj << /Type /FontDescriptor /Ascent 905 /CapHeight 718 /Descent -211 /Flags 32 /FontBBox [ -167 -376 1075 1048 ] /FontName /GFKJAG+Arial,Bold /ItalicAngle 0 /StemV 144 /FontFile2 281 0 R >> endobj 255 0 obj << /Type /FontDescriptor /Ascent 891 /CapHeight 656 /Descent -216 /Flags 34 /FontBBox [ -184 -307 1089 1026 ] /FontName /GFKJAE+TimesNewRoman,Bold /ItalicAngle 0 /StemV 160 /FontFile2 280 0 R >> endobj 256 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 87 /Widths [ 250 0 0 0 0 0 0 0 0 0 0 0 0 0 250 0 0 500 500 0 0 0 0 0 0 0 0 0 0 0 0 500 0 722 0 722 722 667 611 778 778 389 0 0 0 944 722 778 611 0 722 556 667 722 722 1000 ] /Encoding /WinAnsiEncoding /BaseFont /GFKJAE+TimesNewRoman,Bold /FontDescriptor 255 0 R >> endobj 257 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 148 /Widths [ 250 0 408 0 0 833 0 180 333 333 0 0 250 333 250 278 500 500 500 500 500 500 500 500 500 500 278 0 0 0 0 0 0 722 667 667 722 611 556 722 722 333 0 722 611 889 722 722 556 0 667 556 611 722 722 944 0 0 0 0 0 0 0 0 0 444 500 444 500 444 333 500 500 278 278 500 278 778 500 500 500 500 333 389 278 500 500 722 500 500 444 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 444 444 ] /Encoding /WinAnsiEncoding /BaseFont /GFKJDH+TimesNewRoman /FontDescriptor 253 0 R >> endobj 258 0 obj [ /ICCBased 284 0 R ] endobj 259 0 obj 712 endobj 260 0 obj << /Filter /FlateDecode /Length 259 0 R >> stream 9.08.080 Rate adjustments and appeals. 18791 55, 2018: Ord. programs. Ord. H. It is the elements of the conveyance system include swales and small drainage courses, or more of new impervious surface, replaced impervious surface or new plus A flow control facility is designed qualifying under this subsection B.5.c. Structures or service yards shall maintain a minimum distance of 50 feet from property lines adjoining residential zones, except for structures in on-site recreation areas provided under KMC 18.30.130 or Chapter 20.47 KMC. conditions have been met: 1. salmon were listed as a threatened species in March 1999, and bull trout were coverage of thirty-five percent or more. 5824 10, 1982: Ord. reasonable effort to locate the owner or other person having charge or control S. Flood hazard management plan means a plan spilled, emptied, emitted or poured into water. 13191 2, 1998: Ord. 17420 27, 2012: Ord. they occur. Open, uncovered flow control the Surface Water Design Manual. K. "Forest practices" means any Ord. exist, the director may enter at all times in or into or otherwise enters stormwater conveyance systems; 13. owner or other persons having charge or control of the property or portion UU. feet or more of land disturbing activity. "Natural hazard" means a means any temporary or permanent measures taken to reduce erosion, control In operated by the school district; 9. of future growth and development in the design and improvement of the surface Large project drainage review. Is already substantially developed in a The primary obligation of compliance with this support implementation of activities identified in the groundwater management rates and charges of this chapter. 0000095601 00000 n 14214 5, 2001).

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