DOCSLIB.ORG

Quality Assurance Project Plan 2021-2024

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Quality Assurance Project Plan 2021-2024 Snohomish County Total Maximum Daily Load Monitoring Quality Assurance Project Plan Snohomish River Tributaries, Stillaguamish Basin, North and Swamp Creek TMDL Coverage Areas 2021 – 2024 Prepared by Snohomish County Public Works Surface Water Management Division 3000 Rockefeller Ave Everett, Washington 98201 December 2020 Page is blank for duplex printing Program and Publication Information The monitoring activities described in this Quality Assurance Project Plan (QAPP) are triggered by the Federal Water Pollution Control Act (Clean Water Act) Title 33 United States Code, Section 1251 et seq. and Appendix 2 (Total Maximum Daily Loads) of the 2019-2024 National Pollutant Discharge Elimination Systems Phase 1 Municipal Stormwater Permit issued to Snohomish County by the Washington State Department of Ecology (Ecology). The program is funded by surface water fees collected by Snohomish County Public Works under the authority of the Revised Code of Washington RCW 36.89 and 90.72 and codified in Snohomish County Code Title 25. This plan is available on Snohomish County’s website at: http://snohomishcountywa.gov/Archive.aspx?AMID=73 Data for this project is uploaded to Ecology’s Environmental Information Management (EIM) database at www.ecy.wa.gov/eim/index.htm. Author and Contact Information Steve Britsch Snohomish County Public Works / Surface Water Management 3000 Rockefeller Ave., M/S 607 Everett, WA. 98201 Snohomish County Surface Water Management http://snohomishcountywa.gov/208/Surface-Water Page is blank for duplex printing Page is blank for duplex printing Table of Contents Distribution List ............................................................................................................... 1 Abstract ........................................................................................................................... 2 Introduction and Problem Statement............................................................................. 4 Background ..................................................................................................................... 6 Water Quality Standards and Microbial Water Quality Assessment ............................. 7 TMDL Study Area ............................................................................................................ 9 Snohomish River Tributaries ....................................................................................... 9 Quilceda Creek and Allen Creeks ............................................................................. 9 French Creek Sub-basin ......................................................................................... 13 Pilchuck Sub-basin ................................................................................................. 15 Woods Creek Sub-basin ......................................................................................... 17 Stillaguamish Basin .................................................................................................... 19 North Creek Sub-basin .............................................................................................. 21 Swamp Creek Sub-basin ............................................................................................ 23 Summary of Previous and Existing Data ....................................................................... 25 Snohomish County Surface Water Management ..................................................... 25 Long Term Water Quality Monitoring ................................................................... 25 Bacterial Pollution Identification and Correction (PIC) Grants ............................. 26 Washington State Department of Ecology ................................................................ 27 Long Term Status and Trends ................................................................................ 27 Lower Snohomish River Tributaries TMDL ............................................................ 28 North Creek TMDL ................................................................................................. 30 Swamp Creek TMDL ............................................................................................... 31 Stillaguamish River TMDL ...................................................................................... 33 Snohomish Health District ......................................................................................... 36 King County ............................................................................................................... 37 Stillaguamish Tribe .................................................................................................... 37 Tulalip Tribes ............................................................................................................. 37 Organization, Budget and Project Schedule ................................................................. 38 Project Team ............................................................................................................. 38 Special training and certifications ............................................................................. 38 Project Budget ........................................................................................................... 39 Project Schedule ........................................................................................................ 40 Project Description ....................................................................................................... 41 TMDL Areas ............................................................................................................... 41 Study Objectives ........................................................................................................ 41 Routine Monitoring Design and Hypothesis ............................................................. 41 Establishing Routine Monitoring Stations .................................................................... 42 Sampling Process Design............................................................................................... 46 Surface Water Monitoring ........................................................................................ 46 Logistical Problems .................................................................................................... 46 Field Sampling Procedures ............................................................................................ 47 Calibration ................................................................................................................. 47 Invasive Species Procedures ..................................................................................... 48 Field Sample and Measurement Methods ................................................................... 51 Quality Control .............................................................................................................. 52 Field Measurement Quality Control .......................................................................... 53 Trip Blank Samples .................................................................................................... 58 Lab Quality Control.................................................................................................... 59 Bias ......................................................................................................................... 59 Precision ................................................................................................................ 60 Accuracy ................................................................................................................. 60 Data Verification, Validation and Quality Assessment ................................................. 61 Data Verification........................................................................................................ 63 Data Validation .......................................................................................................... 63 Data Management Procedures ................................................................................. 65 Field Data................................................................................................................... 65 Laboratory Data......................................................................................................... 65 Data Analysis ............................................................................................................. 66 Graphical Representations ........................................................................................ 66 Descriptive Statistics ................................................................................................. 66 Calculation of Geometric Means and Percent Exceedances .................................... 66 Calculation of Probabilities and MWQA Ranks ......................................................... 66 Audits and Reports .................................................................................................... 67 Audits ........................................................................................................................ 67 Reports ...................................................................................................................... 67 References .................................................................................................................... 68 Appendix A. Health
Load more

Recommended publications
  • Washington Resolution No
    CITY OF KENMORE WASHINGTON RESOLUTION NO. 04-096 A RESOLUTION OF THE CITY OF KENMORE, WASHINGTON, EXPRESSING AN INTENT TO ADOPT AMENDMENTS TO THE CITY'S CRITICAL AREA REGULATIONS, CHAPTER 18.55 (ENVIRONMENTALLY SENSITIVE AREAS) OF THE KENMORE MUNICIPAL CODE. WHEREAS, the Growth Management Act (GMA) requires local governments, by December 1,2004, to designate and classify environmentally sensitive areas, known as critical areas, and to adopt policies and regulations to protect the functions and values of critical areas; and WHEREAS, critical areas include wetlands, frequently flooded areas, geologically hazardous areas, aquifer recharge areas, and fish and wildlife habitat conservation areas; and WHEREAS. the GMA reauires that local "aovernments include best available science (BAS) in the development of such policies and regulations and give special consideration to conservation or protection measures necessary to preserve or enhance anadromous fisheries (RCW 36.70~.<72;WAC 365-195-900 et seq.); id WHEREAS, in September 2001, the City executed a contract with Adolfson and Associates to complete a review and update the City's Critical area Ordinance; and WHEREAS, under this contract Adolfson Associates has worked with staff and prepared draft revised critical area maps (attached as Exhibit A), a dr& review of Best Available Science Memo (attached as Exhibit B) and a draft critical area ordice(attached as Exhibit C) which was submitted to the State Growth Management Act Reviewing Agencies in March 2004; and WHEREAS, though the City Council has not completed its review of these documents, it has conducted a public hearing and completed several study sessions; NOW THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF KENMORE, WASHINGTON Section 1.
    [Show full text]
  • Sammamish River, North Creek, and Swamp Creek
    FINAL Shoreline Analysis Report for the Cities of Bothell and Brier Shorelines: Sammamish River, North Creek, and Swamp Creek Prepared for: City of Bothell City of Brier Planning and Community Development Community Development Department Department 9654 NE 182nd Street 2901 228th St. SW Bothell, WA 98011 Brier, Washington 98036 February 2011 FINAL CITIES OF BOTHELL & BRIER GRANT NOS. G1000013 AND G1000037 S HORELINE A NALYSIS R EPORT for the Cities of Bothell and Brier Shorelines: Sammamish River, North Creek, and Swamp Creek Prepared for: City of Bothell City of Brier Planning and Community Community Development Department Development Department 9654 NE 182nd Street 2901 228th St. SW Bothell, WA 98011 Brier, Washington 98036 Prepared by: 710 Second Avenue, Suite 550 Seattle, WA 98104 This report was funded in part February 4, 2011 through a grant from the Washington Department of Ecology. The Watershed Company Reference Number: 090615 The Watershed Company Contact Person: Amy Summe ICF International Contact Person: Lisa Grueter Printed on 30% recycled paper. Cite this document as: The Watershed Company and ICF International. February 2011. Final Shoreline Analysis Report for the Cities of Bothell and Brier Shorelines: Sammamish River, North Creek, and Swamp Creek. Prepared for the City of Bothell Community Development Department, Bothell, WA. TABLE OF C ONTENTS Page # 1 Introduction ................................................................................ 1 1.1 Background and Purpose ..............................................................................
    [Show full text]
  • Existing Conditions: Land Use and Environmental Inventory
    164th Urban Center Plan March 2005 III. Existing Conditions: Land Use and Environmental Inventory 1. Introduction This chapter provides an inventory of land use, public service facilities, natural environment elements, and infrastructure within the 164th Urban Center study area. The purpose of this inventory is to identify existing conditions within the study area and provide a foundation for further planning. Issues discussed include land use, parcel size, building conditions, access, parks and recreation, fire/EMS and police facilities, schools, streams, wetlands, steep slopes, water and stormwater, solid waste, and energy. Information was generated through field reconnaissance and research; use of published documents (from Snohomish County, the Alderwood and Silver Lake Water Districts, Snohomish County PUD, and other sources); and verbal interviews with local government and agency staff. This information will also be used to provide documentation for SEPA compliance. Location The 164th Urban Center study area is located south of Everett in the general vicinity of the Interstate 5 (I-5) intersection with 164th Street SW in unincorporated Snohomish County (see Figure 1 – Vicinity Map). The study area is bounded on the north by 156th Street SW (extending over I-5), the northeast by Larch Way and 164th Street SW, the east by North Road, the south by 172nd Street SW to 13th Ave W and 169th Place extending to I-5. Alder Way and Ash Way denote the southern boundary on the west side of I-5. The western boundary is defined by 35th Ave. W north of 164th and by SR 525 south of 164th. 2. Land Use Existing Land Use Pattern Overview The 164th Urban Center study area is approximately 1,024 acres in area.
    [Show full text]
  • Swamp Creek Fecal Coliform Bacteria Total Maximum Daily Load
    Swamp Creek Fecal Coliform Bacteria Total Maximum Daily Load Water Quality Improvement Report and Implementation Plan June 2006 Publication Number 06-10-021 Swamp Creek Fecal Coliform Bacteria Total Maximum Daily Load Water Quality Improvement Report and Implementation Plan by Ralph Svrjcek Washington State Department of Ecology Northwest Regional Office Water Quality Program Bellevue, Washington 98008-5452 June 2006 Publication Number 06-10-021 This document can be viewed or downloaded from the internet at the following site: http://www.ecy.wa.gov/programs/wq/tmdl/watershed/index.html. For more information contact: Department of Ecology Northwest Regional Office Water Quality Program 3190 – 160th Ave. SE Bellevue, WA 98008-5452 Telephone: 425-649-7105 Headquarters (Lacey) 360-407-6000 Regional Whatcom Pend San Juan Office Oreille location Skagit Okanogan Stevens Island Northwest Central Ferry 425-649-7000 Clallam Snohomish 509-575-2490 Chelan Jefferson Spokane K Douglas i Bellevue Lincoln ts Spokane a Grays p King Eastern Harbor Mason Kittitas Grant 509-329-3400 Pierce Adams Lacey Whitman Thurston Southwest Pacific Lewis 360-407-6300 Yakima Franklin Garfield Wahkiakum Yakima Columbia Walla Cowlitz Benton Asotin Skamania Walla Klickitat Clark Persons with a hearing loss can call 711 for Washington Relay Service. Persons with a speech disability can call 877-833-6341. If you need this publication in an alternate format, please call the Water Quality Program at 425- 649-7105. Persons with hearing loss can call 711 for Washington Relay Service. Persons with a speech disability can call 877-833-6341 Table of Contents Acknowledgements...........................................................................................................iii Executive Summary .......................................................................................................... v Introduction ......................................................................................................................
    [Show full text]
  • Snohomish County, Washington and Incorporated Areas Snohomish County
    Volume 1 of 3 SNOHOMISH COUNTY, WASHINGTON AND INCORPORATED AREAS SNOHOMISH COUNTY Community Community Number Name ARLINGTON, CITY OF 530271 BOTHELL, CITY OF 530075 BRIER, CITY OF 530276 DARRINGTON, TOWN OF 530233 EDMONDS, CITY OF 530163 EVERETT, CITY OF 530164 GOLD BAR, CITY OF 530285 GRANITE FALLS, TOWN OF 530287 INDEX, TOWN OF 530166 LAKE STEVENS, CITY OF 530291 LYNNWOOD, CITY OF 530167 MARYSVILLE, CITY OF 530168 MILL CREEK, CITY OF 530330 MONROE, CITY OF 530169 MOUNTLAKE TERRACE, CITY OF 530170 MUKILTEO, CITY OF 530235 SNOHOMISH, CITY OF 530171 SNOHOMISH COUNTY, 535534 UNINCORPORATED AREAS STANWOOD, CITY OF 530172 SULTAN, CITY OF 530173 WOODWAY, TOWN OF 530308 PRELIMINARY Federal Emergency Management Agency FLOOD INSURANCE STUDY NUMBER 53061CV001B NOTICE TO FLOOD INSURANCE STUDY USERS Communities participating in the National Flood Insurance Program have established repositories of flood hazard data for floodplain management and flood insurance purposes. This Flood Insurance Study (FIS) report may not contain all data available within the Community Map Repository. Please contact the Community Map Repository for any additional data. The Federal Emergency Management Agency (FEMA) may revise and republish part or all of this FIS report at any time. In addition, FEMA may revise part of this FIS report by the Letter of Map Revision process, which does not involve republication or redistribution of the FIS report. Therefore, users should consult with community officials and check the Community Map Repository to obtain the most current FIS report components. This FIS report was revised on _________. Users should refer to Section 10.0, Revisions Description, for further information. Section 10.0 is intended to present the most up-to-date information for specific portions of this FIS report.
    [Show full text]