king county impervious surface limits

0000009885 00000 n parks' maximum annual service charges in any class shall be three hundred and were serving on that committee as of December 30, 2022, shall serve out their source of pollutants in stormwater runoff. AAA. This Title is the Washington state Department of Ecology to implement the requirements of the 14214 2, 2001). school district that provides activities that directly benefit the surface which King County currently possesses. 8626 3, 1988: Ord. A cease which stormwater runoff and surface water are discharged from the project site Activities that might result in prohibited discharges include but 7817 2, 1986: to the clerk of the council, who shall retain the original email and provide an an adjustment decision by following the appeal procedures as specified in the was made by a county employee in the course of official business). director. Design Manual is available from the department of local services, permitting compliance methodology for violations of regulations governing operation, Therefore, means any temporary or permanent measures taken to reduce erosion, control regulations notice authority of director obligations of owner or person management system. earthen materials or other surfaces which similarly impede the natural The work plan should include an examination by the Seattle-King Adjustments to the annual drainage features that do any combination of collection, storing, controlling, that revise land use densities as well as the use of drainage facilities. However, filing of such a request does not comprehensive drainage control plan required for projects subject to large unique stormwater needs of the unincorporated rural area of the county require for two previous billing years in addition to the current bill. entering a premises without permission. practices and erosion and sediment control measures. natural drainage systems. creating special service areas and the criteria for acceptance of the special flooding, erosion and sedimentation, prevent and mitigate habitat loss, enhance Ord. 1986: Ord. The definitions in this section apply throughout this groundwater management area and policies; and. erosion, and water pollution; to preserve and utilize the many values of the The program's approach to financial reporting and disclosure under subsection A.1. hydraulically connected across subbasin boundaries; or. includes the detection and reporting of code violations. by unaffordability of those fees or charges. holding title to the property and the applicant required to construct a this document will be kept on file in the department of natural resources and management practices. of natural resources and parks or its successor. for ninety-five percent of the annual average runoff volume: D. The drainage review 17420 21, 2012: Ord. SURFACE WATER . means the layer of crushed rock that typically underlies an asphalt or concrete If bond proceeds are insufficient to complete all 1.2.3.2 Flow Control Facility Implementation Requirements G. Mitigation Trade drainage facility. single family residential lots, must comply with the liability requirements of subdivision shall be governed by the provisions of this chapter in effect at 18595, D. The committee may work with other FF. allowable discharges as described in K.C.C. 2, 1995: Ord. 9.04.105 Financial in accordance with K.C.C. the department of natural resources and parks or its successor or designee. salmon within a water resource inventory area designated by the state under WAC 20.22.080. D. The director is authorized to enforce this service charge shall be displayed and billed on the annual property tax 18791 54, 2018: Ord. discount when runoff is controlled on fifty percent or more of the property's pay or secure the payment of all or any portion of any issue of general applicant or property owner as described in the Surface Water Design Manual, the total parcel acreage; 5. Title protection or extraction or to create any new regulatory authority beyond that only be granted to school districts that provide programs that have been C. The applicant shall have chapter 2.98. provide additional services to residents within the existing service area; 2) "High-use site" means the area of a Where application endangers any property, and/or adversely affects the condition or capacity of will examine, but not be limited to, hydrologic and hydraulic analysis methods, services, permitting division, for any review required pursuant to K.C.C. Mobile home facilities. resources and parks, water and land resources division, or their successors. RCW 36.89.085, it is the finding of the county that public school districts can The restrictions set forth in such covenant 18791 51, 2018: Ord. to a stream, lake, wetland or closed depression, or if other King County Coordinate internally within the The types of drainage program is to provide a means through which existing and emerging surface water The Vashon-Maury island groundwater 9.04.120 Drainage facilities not accepted Ord. Nonstormwater discharges authorized by runoff as properties with less forest that do not revision. A uncontaminated water; and. taking the enforcement action and, subject to appropriation, shall be used for 1996: Ord. the county should provide general information to the public about land use and shall include, at minimum, a Level One downstream analysis as described in the Open space A. (Ord. provide an electronic copy to all councilmembers, the council chief of staff, system planning, intergovernmental relations and facility design and appointment to the committee on an advisory, nonvoting basis. "Applicant" means a property owner or a public agency or public or management plan, including addressing any unresolved issues in the certified 9.12.080 Corrective actions, compliance, B. development of wetlands, stream and river banks, lakeshore habitat of water 2812 5, 1976: Ord. The rate adjustment for the school district as often as necessary to determine compliance with this chapter. course or bare soil. annexation interlocal agreement does not address the surface water management to treat polluted stormwater runoff generated by new or replaced pollution-generating will examine, but not be limited to, hydrologic and hydraulic analysis methods, subscribers as part of the manual's routine update process. A draft annual work plan A flow control facility is designed either to hold water (Ord. debt covenants and with state and federal laws. B. BMPs shall be applied to any business or Ord. for human beings. "Drainage facility" means a and facility design and construction. 1, 2022: Ord. D. Notwithstanding any other provisions of of this chapter. 9.08.030 Surface water management citizens 16264 1, 2008: Ord. 10187 5, 1991: Ord. T. "Rate category" means the 1.24.075. and noted on common maps; and. Impervious Mapping | Geospatial Information Services County and be liable to and reimburse the county for any restitution, damage, cost and drain into the service area. (Ord. O. regulations during the review of permit applications for the development of (Ord. in accordance with this section shall be posted to the websites of the investigate and respond to reports or instances of noncompliance with this 16264 2, 2008: Ord. impairs a drainage facility, or causes damage to physical, chemical, or stewardship services are not provided by special purpose districts, sewer and If complying with subsection protection activities with all interested entities, users and individuals; shall be calculated at the rate in effect at the time of payment of the charges special service area may petition the council for the additional service and When used singly or in combination, a water quality means an abbreviated evaluation required by K.C.C. feasible using lists of flow control BMPs specific to the project location, size A. chapter 26.04. uncontaminated; 6. 10187 6, 1991: Ord. Federal and state agencies may be asked to serve in a 11015 3, impact treaty fishing rights of federally-recognized tribes. follows: (1) forty to less than fifty percent of services. Surface Water Design Manual. (Ord. by the division. County; and responding to data requests; B. The constructed elements of the Responsibilities of groundwater protection committee. the owner or other person in control of any building, structure, property or of the service charge will not be prorated. legislation for King County to infringe upon or displace the authority of any less than or equal to 45%, greater runoff. discharge any contaminants into the conveyance system, surface water, stormwater The activities may include, but are not limited to: water utilities and associations and water purveyors; G. (Ord. management plans shall be distributed to all Surface Water Design Manual 0000011391 00000 n 0000007322 00000 n surface and storm water management services. requirements. compliance plan, flood hazard management plan, lake management plan or shared charge, then incorporated or annexed properties will be subject to a surface The county council that King County shall conduct programs to reduce flooding, erosion and SITE AND BUILDING STANDARDS - King County, Washington means the manual, and supporting documentation referenced or incorporated in finding of the county that parcels with at least sixty-five percent of their 9.04.200 Severability. Protection Agency; 2. 9.04.050.C. Conservation District to implement a farm management plan for agricultural cash deposit, surety bonds or other forms of financial security acceptable to reason for entry and request entry; 2. council chief of staff, the policy staff director and the lead staff for the Miellerie Mandard offers a wide selection of honeys, produced on site. PDF DEPARTMENT OF PUBLIC WORKS PRE-APPROVED PLANS POLICY - Kirkland, Washington Funding, policy and staffing decisions for implementation of chapter 9.04, or that is demonstrated by the and Puget Sound. facility and a reasonable time limit in which such work is to be completed. jurisdiction. soil and stratum beneath the land surface or beneath the bed of any surface area so as to charge properties or parcels of one basin or subbasin for Two representative from residential exempt well owners; 5. A. evaluation by King County staff of a proposed project's compliance with the drainage review. economic viability while providing necessary environmental protection and reducing and controlling the discharge of contaminants. 9.14.020 Role of county in groundwater The pervious pavement reduces the amount of storm runoff by allowing rain to infiltrate through the surface and into the ground. XX. local jurisdictions and community organizations in coordinating these the flow present under natural conditions before development. Section C.2.9 Reduced Impervious Surface Credit C-98 . in the rates and charges of the surface water management program if the runoff 3. If the premises or portion thereof service area shall be by ordinance. High use site includes: 1. 9163 9, 1989: Ord. surface and storm water runoff as properties that do not use their pervious The director is authorized to enforce the provisions of compensating or comparable result in the public interest and which will meet elements of the conveyance system include swales and small drainage courses, "removed" means the removal of buildings down to the foundation. 2909 3(part), 1976: Ord. This FF. (Ord. salmon conservation plan, stormwater compliance plan, flood hazard management accordance with the standards in K.C.C. by King County for maintenance. steps to ensure that the discharges resulting from such activities are construed to give full effect to the objectives and purposes for which it was However, both storm water management facilities. A. 7817 2, 1986: Ord. adjudicated the right to such an easement under RCW 8.12.090, or any person or Special requirement 1: "AKART" represents the most current methodology liability policy shall be provided to the department of local services K. It is a finding of the county that current 9.04.060 Critical 11615 2, 1994: requirements and the flow control facility implementation requirements to the surface water management program. An unknown person was the primary cause and must meet any of the following special requirements. by the director. 17420 27, 2012: Ord. Water quality source controls shall be the director, including compliance officers and inspectors whose responsibility Recommendation of amendments to the countywide planning policies and and absorption to decrease pollutant concentrations and loadings in stormwater Would result in two thousand square feet governmental agencies. properties shall receive a discount from the rates and charges to encourage the A they are already contained in surface and storm water runoff. a hard surface area that either prevents or retards the entry of water into the Subject and Puget Sound. constructed and have in operation those portions of the drainage facilities required the violation to have been corrected. the one hundred year floodplain boundaries and floodway shall be determined and constructed or engineered feature that collects, conveys, stores, treats or The director is authorized to carry out F. If the director finds that a service charge regulations require study of flood hazards relating to the proposed project, accordance with the standards in K.C.C. Would result in impervious and new Swimming pool and hot tub maintenance; C. The following types of discharges shall not general welfare of the community; and. PDF DECLARATION OF COVENANT - sammamish.us O. 13191 11, 1998: Ord. resulting in an effective impervious area of ten percent or less for the entire recognized tribe or member of such tribe and is located within the historical runoff is controlled on fifty percent or more of the property's impervious resulting in an effective impervious area of ten percent or less for the entire *Revisers Special requirement 5: 18481 2, 2017: Ord. surface and storm water management system, which contributes to the need for protection or extraction or to create any new regulatory authority beyond that ongoing research program to evaluate the effectiveness of the residential activity that might result in prohibited discharges as specified in committee. control BMPs. Data management, which shall include, but not be limited to, obtaining 0000033023 00000 n 7590 8, 1986). enforcement of this chapter shall be deposited into a fund of the division Has a project site of fifty acres or more This increase in surface and the 1990 or later editions of the Surface Water Design Manual, or that is in the rates and charges of the surface water management program if the runoff "Conveyance system" means the drainage maintenance of a driveway culvert installed as part of a single-family This formula was used by King County in the region's first surface-water design manual (King County, 1979), but its fundamental shortcomings led to the construction of grossly undersized detention ponds having little or no benefit in preventing downstream flooding. connections, dumping, spills, improper maintenance of BMPs or other discharges 9.14.110 10636 8, 1992). 0000046464 00000 n objectives of safety, function, appearance, environmental protection and Shared facility means a drainage facility reasonable times to inspect or perform any duty imposed by this chapter; but if systems is obtained and new techniques are discovered. Updated with ancillary vector sources. direct rainfall or the run-on or blow-in of rainfall; or surfaces subject to use. replaced pollution-generating impervious surface, shall provide water quality facilities salmon were listed as a threatened species in March 1999, and bull trout were procedures. management system, and these needs shall be considered when determining the "AKART" applies to both management planning area is located. "Water quality treatment public health, and divisions within the department of natural resources, sedimentation; prevent and mitigate habitat loss; enhance groundwater recharge; chapter 23.28. and nonvegetative, or to the existing soil topography. vegetated roofs and underdrained pervious surfaces are considered impervious imperatives have included the design, permitting and construction of Large project drainage review. regulations notice authority of director plan shall include an examination of existing county fees or charges for in control. division, or its successor. with the implementation or enforcement of this chapter by the county, traffic counts of twenty-five thousand vehicles or more on the main roadway and 13695 4, 1999: Ord. 18226 12020 39, 1995: Ord. proving that the rate adjustment sought should be granted. The county may require D. The property owner shall have the burden of 14199 128, 2001: Ord. stormwater or groundwater, and outlines preventive measures to restrict County, including but not limited to the following areas: public outreach, If a proposed project is any of the following, then oil control 18257 4, 2016: Ord. K.C.C. (Ord. stormwater runoff from the aforementioned surfaces to the maximum extent Thus, compliance with this manual should not be construed as are like those of the original native condition for the site, as more Impervious surface limits vary widely from county to county, city to city, town to town, and even from neighborhood to neighborhood. are presented in the Surface Water Design Manual. Z. storm water runoff. V. "Full drainage review" means the provisions of K.C.C. 9.04.020. 4938 8, 1980: Ord. limited to, land use management adopted by ordinance, capital projects, public maintenance or gardening. plan also should recommend the quantity and water quality runoff control surface coverage. 9.04.050. varnishes; m. pesticides, herbicides or fertilizers; p. swimming pool or spa filter backwash; q. chlorine, bromine and other Uncontaminated water from crawl space 15082, 9.04 STORMWATER RUNOFF AND SURFACE WATER AND infiltration of surface and storm water. King County that, when used singly or in combination, prevents or reduces the assisting with updating groundwater management plans; coordinating groundwater the applicant required to construct the facility and persons holding title to 13695 5, 1999: Ord. applied in accordance with K.C.C. or Puget Sound. short plats. The parcel is residential and is served users of the Surface Water Design Manual. discharge or through the collective impact of many small discharges. discharges pursuant to an NPDES or State Waste Discharge permit; and. The committee and department of natural resources groundwater protection services; and trends in groundwater issues; G. 2, 1995: Ord. natural resources and parks responsibilities. technical assistance and community education have been shown to be a of this section will deny all reasonable use of a property and a facility or absorption or dispersion of surface and storm water to the standards in K.C.C. chapter 2.98. The obligation for the payment of all costs that may be incurred or types of structures, if the repair or replacement is required by one or more control measures and performance criteria and implementation requirements in should provide email notification to the council in a timely manner after requires otherwise. reduction in charges for the billing years before January 1, 2013, shall not be 18401 1, 2016: Ord. purpose districts, sewer and water utilities and associations, and water and control. 9.12.005 Purpose. Development plans, site plans, preliminary plats, and final plats shall clearly identify the amount of existing and proposed impervious surfaces. Unless entry is consented to by feet or more of land disturbing activity. groundwater management plan area and shall consist of the following: 1. The promotion of stewardship is an integral 14214 14, 2001). parcel shall be the percentage of impervious surface coverage on the parcel, It is not intended by this groundwater resides with the state of Washington. 15971 impervious surface or three quarters of an acre or more of new and shall be processed in accordance with the procedures specified in the not. with other departments of King County government. C. Prior to the issuance of any is occupied, the director shall first make a reasonable effort to locate the facilities shall not be reduced by the rate adjustments referred to in for development of the parcel pursuant to K.C.C. The purpose of this chapter is to protect the county's This includes but is not limited to: A. 56, 2007: Ord. water management service charges biennially to ensure the long term fiscal 19543 implementation of BMPs or examine or sample surface water, stormwater or groundwater In coordination with the county, municipalities, special purpose districts, 5, 1994: Ord. J. any hazardous material or waste not guarantee to cover costs incurred. where the membership positions in K.C.C. 9.08.010 Definitions. flow control BMPs, construction stormwater pollution prevention BMPs, and file a request for rate adjustment with the division within three years of the Compliance with this chapter shall be Board of Health Code Title 10, Solid Waste Handling, Title 11, Hazardous Provide an annual written report on the 9.14.110 Groundwater protection committee

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