Surface water design manual addendum general introduction the city of kenmore adopted the 2016 king county surface water design manual 2016 kcswdm in order to be in compliance with the washington state department of ecology phase ii municipal stormwater permit. King county, washington, surface water design manual, appendix a appendix a maintenance requirements for flow control, conveyance, and water quality facilities this appendix contains the maintenance requirements for the following typicalstormwater control and water quality facilities and components ctrl click to follow the link. Smmww means the 2005 ecology stormwater management manual for western washington. Pierce county must update the 2015 manual by july 1, 2021. The kcswdm has been adopted to meet the requirements of the clean water act, the. Appendix 10 equivalent programs for runoff controls for new. Surface water design manual addendum preface how to use this. To comply with the city of rentons npdes permit requirement, the city adopted the 2016 king county surface water design manual with amendments to create the 2017 city of renton surface water design manual. Tukwila proposed amended idcs and standard details draft, august 5, 2016 page 6.
Smmww means stormwater management manual for western washington ecology. Not less than one copy of this manual, suitably marked to indicate amendments and additions, is filed in the office of the des moines city. Flood insurance study king county, washington and incorporated areas, national. The entire 2016 swdm including chapters 16, appendices a through d. King county recently updated its manual to be consistent with the 2012. King county recently updated its manual to be consistent. City of sammamish surface water design manual addendum city of sammamish surface water design manual addendum page 6 of 35 king county code kcc description sammamish municipal code smc description title 2 administration 20 administrative procedures, environmental policy 21a. The city of bothell has incorporated and modified the 2016 king county surface water design manual s appendix a for maintenance standards. Bmps in king countys 2016 surface water design manual will need to ensure they also. Surface water design manual, king county, washington, january 9, 2009. The kcswdm has been adopted to meet the requirements of the clean water act, the endangered species act and state growth management act. Appendix e permit 58 pages appendix f water quality 18 pages appendix g wetland locations 6 pages appendix h habitat assessment 522 pages, 54 mb appendix i maintenance standards 24 pages appendix j code chapter 1. Idde manual 2017 swdm means surface water design manual king county.
The modification went into effect on january 16, 2015. The 2016 king county surface water design manual has been approved by the department of ecology as an equivalent manual. In 2015, swm will produce four waterlog newsletters which will cover a variety of topics. Swdm means 2009 king county surface water design manual. Equivalent stormwater manuals for municipal stormwater. A hard surface area which causes water to run off the surface in greater quantities or at an increased rate of flow from the.
O2016428 surface water design manual city of sammamish. King county surface water design manual city of renton. Included in the adoption of the king county manual is this 201 i city of issaquah surace water design addendum addendum, which revises chapters 1 and 2 of the king county manual to reflect city ofissaquahspecific requirements. Water quality facility means a drainage facility designed to reduce pollutants once they are already contained in surface and storm water runoff.
Revisions will need to be approved by the permitting division of king county. Jan 01, 2017 this addendum to the 2016 king county surface water design manual kcswdm applies to development and redevelopment proposals within the city of seatac city. County surface water design manual and the city of kirkland addendum to the 2016 king county surface water design manual constitutes a violation of this chapter, and shall be enforced against the. Adopted king county training and information on 2009 king county surface water designmanual. Cfw addendum to the kcswdm page 1 of 29 2162010 addendum to the king county surface water design manual effective date february 16, 2010. Adopted and updated its staff training program to the 2016 king county surface water design manual. The figures in chapter 3 are reproduced, with permission, from king county s surface water design manual. Addendum to the king county surface water design manual. The reference section of the king county manual is not adopted by the city.
Wdwf integrated streambank protection guidelines, published by washington department of fish and wildlife. Maintenance requirements for typical stormwater facilities can be found in appendix a of the 2016 king county surface water design manual. Pursuant to king county council adoption of ordinances 15051, 15052, 15053 otherwise known as the critical areas ordinance, stormwater ordinance, and clearing and grading ordinance, the department of natural resources and parks adopted public rules for revising the king county surface water design manual swdm and the stormwater pollution. Aug 10, 1998 this volume of the drainage design and erosion control manual describes hydrologic analysis techniques and general design criteria for flow control and water quality best management practices bmps. It made low impact development principles and best management practices the preferred and commonly used approach for development. Appendix b does not apply to the city of sammamish. Jan 01, 2019 proposed projects that would result in five thousand square feet or more of new plus replaced impervious surface or three quarters of an acre or more of new pervious surface shall provide flow control facilities to control stormwater runoff generated by new impervious surface, new pervious surface, replaced impervious surface and any existing impervious surface added on or after january 8, 2001, as specified in the surface water design manual.
Training on king county surface water design manual. This document includes all changes, additions, and deletions to the kcswdm and is to be used for all. Addendum to the 1998 king county surface water design manual section 2 engineering development guide chapter 1 general considerations 1. Appendix a of the swdm contains maintenance standards for flow control, conveyance and water quality facilities in kenmore equivalent to ecologys 2005 stormwater management manual for western washington. Land disturbing activity does not include tilling conducted as part of agricultural practices, landscape. Please note that this document is intended to provide a general and summarized description of thresholds and requirements from the swdm. Design details and requirements for specific flow control and water quality bmps are provided in volume v. Surface water design manual, king county, washington, september 1, 1998.
October 2009 volume iii hydrologic analysis and flow control bmps 11. Both temporary and permanent erosion and sediment controls shall be designed, implemented and maintained as described in section 1. Fact sheet for the 2016 modification to the phase i. Pursuant to king county council adoption of ordinance 18257, the department of natural resources and parks adopted a public rule revising the king county surface water design manual swdm. Provided support to scout troops and other groups in installing puget sound starts here plaques at catch basins. Ordinance 100305, approved by kenmore city council on january 11, 2010, adopted the 2009 king county surface water design manual swdm. City of kent surface water design manual january 2017 how to use this document the city of kent has adopted the 2016 king county surface water design manual kcswdm as amended by this document. Capital improvement projects the city repairs, retrofits, and adds new stormwater facilities where needed for water quality and water quantity control.
Thurston county drainage design and erosion control manual. King county, washington surface water design manual page 1 of 23 introduction this addendum to the 2016 king county, washington surface water design manual kcswdm applies to development and redevelopment proposals within the city of federal way. Water quality wq facilities are a structural component. Summary of 2016 update to surface water engineering standards. King county recently updated its manual to be consistent with the. Title 9 surface water management king county, washington. Surface water design manual addendum preface how to use this document general introduction the city of newcastle the city adopted the 2016 king county surface water design manual 2016 kcswdm in order to be in compliance with the washington state department of ecology phase ii municipal stormwater permit. King county, washington, surface water design manual 2009 surface water design manual appendix d 192009 d3 d. City of sammamish surface water design manual addendum to 2016 kcswdm. Updates are required by the washington state department of ecology, typically on a fiveyear cycle. Illicit discharge detection and elimination program manual. The erosion prevention and sediment control plan shall meet or exceed the standards in the adopted.
The requirements in this addendum differ from the king county manual in four primary ways. City of federal way stormwater management program the. The city also restores and enhances our streams and. Surface water design manual addendum to 2016 kcswdm. This addendum to the 2009 king county surface water design manual kcswdm applies to development and redevelopment proposals within the city of seatac city. Pursuant to king county council adoption of ordinance 16264, the department of natural resources and parks adopted a public rule revising the king county surface water design manual swdm.
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