Minimum 12,000 SF lots. . Section C.2.9 Reduced Impervious Surface CreditReduced Impervious Surface Credit C-98 . An area which is low-lying and either has no surface water outlet, or has such a limited outlet that during storm events the area acts as a retention basin, with more than 5000 square feet of water surface area at overflow elevation. clearing limits/minimize clearing . 19.110.080 Increases to single-story construction limits - City center core and frame. Third, the Sims decision does not prohibit clearing limits. Journal of the American Water Resources Association 33, 5: 1077-1090. Floodplain Encroachment. 4 Impervious Surfaces No more than 5% of the site shall consist of impervious surfaces. Otherwise, public agency or utility office is a conditional use. As required by this manual, development projects that create more than 2,000 sf of new and/or replaced impervious surface must evaluate LID facilities to the maximum extent feasible and include amended soil in all landscaped areas. Washington City Limits data (1 band)6 . WHEEL STRIP DRIVEWAY DESIGN REQUIREMENTS for the typical 10-foot driveway width: The two pavement strips must be no more than 2.5-feet wide. Visit King County Parcel Viewer; . 3. Kitsap County 2016 Comprehensive Plan Update Appendix F 7 November 2015 Basin No Action Zoning Total Area (Acres) Low Impervious Surface Estimate (Acres) High Impervious Surface Estimate (Acres) Forest Resource Lands 393 10 10 Incorporated City 10,663 2,495 2,495 Industrial 37 26 26 Lake 468 2 2 Rural Protection 5,139 2,281 2,281 Charging for Streets Many cities in the State charge their own streets for stormwater service. Overall non-vegetated surface extent will be quantifiable by summing those areas in this category with those in the Impervious-Constructed Surface category. This step also allows a limited level of panel edge smoothing. (2) Affordable housing defined. ERDAS Imagine Procedures Step 1: Mosaic Products from V Utilizing the feathering option for image overlap, mosaic the categorized panels into one file. For Impervious Surfaces Distribution for Eastern King County. 1 (1) Purpose. The maximum impervious surface percentage for each residential zone shown in the Site Requirements Chart (RCDG 20C.30.25-140) establishes the maximum percentage of a lot's area that may be covered with structures (including outdoor storage), paved areas, and other impervious surfaces. Storm Drainage Policy D-12 of the COK Pre-Approved Plans. limit the potential for runoff and sediment transport. Provide a project-wide (King County and southwest Snohomish county) generalized interpretation of impervious and impacted surface current to 2007 for those areas completed. Identified by King County Assessor tax parcel number 810610 -0090 SEPA Determination: The proposal is categorically exempt from SEPA pursuant to WAC 197-11 - . Identified by King County Assessor tax parcel number 192405 -9180 SEPA Compliance: The proposal is categorically exempt from SEPA pursuant to WAC 197-11- 800(6)(e ). because this project will comply with the 2009 King County Surface . One way to limit it is to assume that the DNR's training sets are a representative sample to be . 4~' ATTEST: ~ w:,. Once this limit is reached with the impervious surface area, no further development can occur on site. Parks has negotiated a 27% limit on impervious surfaces within the property lines (the fund normally limits to 15%; the extra is taken from the parcel to the north). And Impervious Surface Limits For Your SED Review the table below which can also be found in ICC 17.05A.090 to understand how far your development needs to be . STORMWATER TECHNICAL GUIDE VII FEBRUARY 2015 Acronyms APN Assessor's Parcel Number BMP Best Management Practice CCRs Covenants, Conditions, and Restrictions CDP Census-Designated Place DMA Drainage Management Area (see Chapter 4) EISA Equivalent Impervious Surface Area, as defined in the PCRs HOA Home Owners Association HSG Hydrologic Soils Group (A, B, C, or D, as defined by NRCS) By exclusion, null value areas imply vegetated or water. The dotted lines on the map to the right indicate the city limits. COUNTY OF KING )ss. review, per the King County Surface Water Design Manual (KCSWDM) any impervious surface that has been added since January 8, 2001, without an approved permit, will need to be included as a target surface for flow control mitigation. King County or its municipal successors shall have a nonexclusive perpetual access . King County GIS Center King Street Center 201 S. Jackson St. Suite 706 Seattle, WA 98104 giscenter@kingcounty.gov + 47.59909 N - 122.33136 W + 47 35' 56.72" Height Limit Lot Width Maximum Height Greater than 30' 30' 30' or less 25' Small or irregularly shaped lots may be limited to 18'. Article I. Third, if the county wants to provide an exception to the forest retention requirement for agriculture similar to the impervious surface exception we will support it. Following state codes enacted in 2001, local governments can limit homeowners, especially in watershed areas, in the amount of ground that is covered by solid surfaces. . In the Pacific Northwest, for instance, the maximum allowable impervious surface area ranges from around 15 to 35 percent of the total parcel (depending on how the city or county has zoned the property). KING COUNTY, WASHINGTON. Pollutants such as oil and other chemicals runoff from impervious areas directly into our creeks, streams, and lakes which negatively impacts water quality. See King County's Surface Water Design Manual website for additional information and updates. Minimum 9,600 SF lots. Limits/Minimize Clearing . impervious surface limit. creates between 2,000 - 5,000 square feet of new impervious surface area is required to undergo Small Project Drainage Review. Google Scholar . A maximum of 35% of some lots in residential . the Counci 1 Common impervious surfaces include, but are not limited to, roofs, walkways, patios, driveways, parking lots, storage areas, areas that are paved, graveled or made of packed or oiled earthen materials or other surfaces that similarly impede the natural infiltration of surface water or stormwater. 15.52.040 Work contracted out. King County Surface Water Design Manual (KCSWDM), chapter I, section 1.1.2, "Full Drainage Review" as . National Land Cover Database Zone 01 Imperviousness Layer Metadata also available as Frequently-anticipated questions: What does this data set describe? The City has adopted the 2009 King County Surface Water Design Manual (KCSWDM). The total percentage of the Property that can be covered by impervious surfaces (including buildings) . Questions about the NLCD mapping zone 01 can be directed to the NLCD 2001 land cover mapping team at the National Center, EROS, Sioux Falls, SD (605) 594-6151 or mrlc@usgs.gov. According to Sam Pace, Housing Specialist with Seattle King County REALTORS, Renton's PRADU program "should serve as a model for cities throughout the Central Puget's Sound Region.". KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL, APPENDIX C 47/241/20162021 2016 2021 Surface Water Design Manual - Appendix C Section C.3.8 Triangular Silt . Instead of multiplying your rate by the total acreage of your parcel, we multiply your rate by only the number of impervious acres. When the required number of protected trees cannot be retained, new trees, with a 2" caliper or greater, shall be planted. Section C.3.7 Vegetated StripVegetated Strip C-118 . King County Surface Water Management . SURFACE WATER . 5 Tree Preservation 30% of all protected trees (see Section 8: Definitions) shall be retained on site. Impervious surfaces are items that prevent water from penetrating into the soil, such as driveways and rooftops. impervious-surface limits, forest-retention policies, stormwater detention, riparian-buffer maintenance, and protection of wetlands . Surface Water Utility Purpose and Responsibilities. New roadway is assumed to be pollution-generating impervious surface. If yes, describe how there will be no net increase in the rate and volume of stormwater surface runoff. ABSTRACT: For 20 years, King County, Washington, . 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. Utilities: Include the location of all existing and proposed utilities below and above the ground. MRLC 1992 classification (1 band)3. Any subsequent changes to the attached interlocal agreement shall be submitted to the King County council for review. impervious surface limit. . If, for example, we have a 1-acre site where 75% of the building ground floor area is dedicated to multifamily uses and 25% of the building ground floor area is dedicated to commercial uses, the impervious cover limit will be calculated by multiplying 75% of the gross site area (0.75 acres) by 60% (the multifamily use impervious cover limit . In 2016, the City of Kirkland adopted the 2016 King County Surface Water Design Manual (KCSWDM). 15.52.030 Comprehensive drainage and storm sewer plan. PASSED thi s 2.-z,JL day of ~,19. On April 28, 1986, the King County Council approves an $8.4-million-per-year Surface Water Management program. DESIGN MANUAL . FOR IMPERVIOUS SURFACE LIMIT Grantor(s): . King County Water and Land Resources Division 201 South Jackson Street, Suite 600 Seattle, WA 98104-3855 Rhett Jackson Daniel B Click here to load reader Post on 22-Aug-2020 To determine if impervious surfaces have been added since Site Areas Worksheet, continued To provide affordable housing to the citizens of Federal Way and to comply with the Growth Management Act and the county-wide planning policies for King County. plaza, connection to King County improvements and will reference the South Park Green Space Vision Plan. Share. Chapter 15.52SURFACE WATER MANAGEMENT. Exception: The 10 percent limit may be exceeded if: The maximum lot coverage allowance of LUC 20.20.010 is not exceeded. . This category will define areas with generally high-runoff values, high-erosion potential, and little or no opportunity to support substantial vegetation, either due to poor soil conditions . . Impervious surfaces are items that prevent water from penetrating into the soil, such as driveways and rooftops. 19.110.010 Affordable housing regulations. King County, Washington 4-17 May 2014 4.1.4.1. .