Eastern Washington
Stormwater Effectiveness Studies
Detailed Study Design Proposal &
Quality Assurance Project Plan (QAPP)
Non-Vegetated Filtration Swale Stormwater
Effectiveness Study
Study Classification:
 Structural BMP
ï‚£ Operational BMP
ï‚£ Education & Outreach
Study Objective(s):
 Evaluate Effectiveness
ï‚£ Compare Effectiveness
 Develop Modified BMP
ï‚£ Develop New BMP
Prepared For:
City of West Richland
Public Works Department
3100 Belmont Blvd. Suite 102
West Richland, WA 99353
Prepared By:
Evergreen StormH2O, LLC
PO Box 18912
Spokane, Washington 99228
June 2022
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QAPP Publication Information
The QAPP will be available to the public on the City of West Richland website
(https://www.westrichland.org/189/Stormwater).
QAPP Author and Contact Information
Aimee Navickis-Brasch, PhD, PE
Evergreen StormH2O, LLC
Principal and President
PO Box 18912
Spokane, WA 99228
[email protected]
509-995-0557
Taylor Hoffman-Ballard, PE
Evergreen StormH2O, LLC
Project Manager
PO Box 18912
Spokane, WA 99228
[email protected]
952-836-7863
Nicole Chen
Engineer-In-Training
Osborn Consulting, Inc.
1402 3rd Avenue, Suite 415
Seattle, WA 98101
[email protected]
206-876-7740
Kevin Flanagan
Engineer-In-Training
Osborn Consulting, Inc.
101 S. Stevens Street, Suite 103
Spokane, WA 99201
[email protected]
509-960-7849
Mark Maurer, PE, PLS
Evergreen StormH2O, LLC
Senior Stormwater Engineer
PO Box 18912
Spokane, WA 99228
[email protected]
360-790-6421
7/01/2022
Brandi Lubliner
7/01/2022
6/30/2022
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Distribution List
This section includes
Name, Title
Organization
Contact Information:
Address, Telephone, E-mail
Drew Woodruff
City Engineer
City of West Richland
[email protected]
(509) 967-5434
Martin Nelson
Public Works
Development Review
Supervisor
City of Kennewick
[email protected]
(509) 585-4306
Brian Pope
Civil Engineer
City of Richland
[email protected]
(509) 942-7508
Michael Henao
Environmental
Compliance Coordinator
City of Pasco
[email protected]
(509) 545-3454
Brian Morgenroth
Stormwater Coordinator
City of Walla Walla
[email protected]
(509) 534-4559
Seth Walker
Chief of Engineering &
Construction
Walla Walla County
[email protected]
509-524-2710
Joy Bader
Technician IV
Walla Walla County
[email protected]
509-524-2733
Chuck Geissel
Technician III
Walla Walla County
[email protected]
509-524-2729
Andrea Jedel
Water Quality PM
Washington State
Department of Ecology
[email protected]
509-961-0625
Doug Howie
Senior Stormwater
Engineer
Washington State
Department of Ecology
[email protected]
360-870-0983
Aimee Navickis-Brasch
Principal and President
Evergreen StormH2O,
LLC
[email protected]
509-995-0557
Taylor Hoffman-Ballard
Project Manager
Evergreen StormH2O,
LLC
[email protected]
509-867-3650
Nicole Chen
Engineer-In-Training
Evergreen StormH2O,
LLC
[email protected]
206-876-7740
Kevin Flanagan
Engineer-In-Training
Evergreen StormH2O,
LLC
[email protected]
509-960-7849
Mark Maurer
Senior Stormwater
Engineer
Evergreen StormH2O,
LLC
[email protected]
(509) 867-3654
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1.0
Table of Contents
QAPP PUBLICATION INFORMATION ………………………………………………………………………………………………….. I
QAPP AUTHOR AND CONTACT INFORMATION ………………………………………………………………………………… I
SIGNATURE PAGE ………………………………………………………………………………………………………………………………..II
DISTRIBUTION LIST …………………………………………………………………………………………………………………………… III
1.0
TABLE OF CONTENTS ……………………………………………………………………………………………………………… 1
2.0
EXECUTIVE SUMMARY …………………………………………………………………………………………………………… 4
3.0
INTRODUCTION AND BACKGROUND ……………………………………………………………………………….. 5
3.1
INTRODUCTION TO THE STRUCTURAL BMP …………………………………………………………………………………….. 5
3.2
PROBLEM DESCRIPTION …………………………………………………………………………………………………………………. 6
3.3
RESULTS OF PRIOR STUDIES ……………………………………………………………………………………………………………. 7
3.3.1 Developed Non-Vegetated Filtration Swale Alternatives ………………………………………………………………… 8
3.4
REGULATORY REQUIREMENTS ……………………………………………………………………………………………………… 11
4.0
PROJECT OVERVIEW …………………………………………………………………………………………………………….. 12
4.1
STUDY GOAL ………………………………………………………………………………………………………………………………. 12
4.2
STUDY DESCRIPTION AND OBJECTIVES: …………………………………………………………………………………………. 12
4.3
STUDY LOCATION ……………………………………………………………………………………………………………………….. 13
4.4
DATA NEEDED TO MEET OBJECTIVES ……………………………………………………………………………………………… 14
4.5
TASKS REQUIRED TO CONDUCT STUDY …………………………………………………………………………………………. 15
4.6
POTENTIAL CONSTRAINTS ……………………………………………………………………………………………………………. 16
5.0
ORGANIZATION AND SCHEDULE ……………………………………………………………………………………… 17
5.1
KEY PROJECT TEAM MEMBERS: ROLES AND RESPONSIBILITIES …………………………………………………………. 17
5.2
PROJECT SCHEDULE …………………………………………………………………………………………………………………….. 19
5.3
BUDGET AND FUNDING SOURCES …………………………………………………………………………………………………. 21
6.0
QUALITY OBJECTIVES ………………………………………………………………………………………………………….. 22
6.1
PRECISION ………………………………………………………………………………………………………………………………….. 27
6.2
BIAS …………………………………………………………………………………………………………………………………………… 27
6.3
REPRESENTATIVENESS …………………………………………………………………………………………………………………. 27
7.0
EXPERIMENTAL DESIGN ……………………………………………………………………………………………………… 28
7.1
STUDY DESIGN OVERVIEW …………………………………………………………………………………………………………… 28
7.2
TEST-SITE(S) SELECTION PROCESS …………………………………………………………………………………………………. 31
7.3
THE STRUCTURAL BMP SYSTEM SIZING ………………………………………………………………………………………… 31
7.4
TYPE OF DATA BEING COLLECTED ………………………………………………………………………………………………… 33
7.5
STORM EVENT SIMULATION …………………………………………………………………………………………………………. 35
7.6
WATER QUALITY SAMPLING ………………………………………………………………………………………………………… 36
8.0
SAMPLING PROCEDURES ……………………………………………………………………………………………………. 38
8.1
STANDARD OPERATING PROCEDURES …………………………………………………………………………………………… 38
8.1.1 Site Preparation for Simulated Storm Event ……………………………………………………………………………….. 38
8.1.2 Simulate Water Quality Storm Event ………………………………………………………………………………………… 39
8.1.3 Sample Processing……………………………………………………………………………………………………………………. 40
8.2
CONTAINERS, PRESERVATION METHODS, HOLDING TIMES …………………………………………………………….. 41
8.3
EQUIPMENT DECONTAMINATION …………………………………………………………………………………………………. 42
8.4
SAMPLE IDENTIFICATION …………………………………………………………………………………………………………….. 42
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8.5
CHAIN OF CUSTODY ……………………………………………………………………………………………………………………. 42
8.6
FIELD LOG REQUIREMENTS ………………………………………………………………………………………………………….. 43
9.0
MEASUREMENT PROCEDURES …………………………………………………………………………………………… 44
9.1
PROCEDURES FOR COLLECTING FIELD MEASUREMENTS ………………………………………………………………….. 44
9.2
LABORATORY PROCEDURES …………………………………………………………………………………………………………. 44
9.3
SAMPLE PREPARATION METHODS ………………………………………………………………………………………………… 44
9.4
SPECIAL METHOD REQUIREMENTS ……………………………………………………………………………………………….. 44
9.5
LAB(S) ACCREDITED FOR METHODS ……………………………………………………………………………………………… 45
10.0
QUALITY CONTROL ……………………………………………………………………………………………………………… 46
10.1 FIELD QC REQUIRED …………………………………………………………………………………………………………………… 46
10.2 LABORATORY QC REQUIRED ……………………………………………………………………………………………………….. 46
10.3 CORRECTIVE ACTION ………………………………………………………………………………………………………………….. 47
11.0
DATA MANAGEMENT PLAN PROCEDURES ……………………………………………………………………… 48
11.1 DATA RECORDING & REPORTING REQUIREMENTS …………………………………………………………………………. 48
11.2 ELECTRONIC TRANSFER REQUIREMENTS ……………………………………………………………………………………….. 48
11.3 LABORATORY DATA PACKAGE REQUIREMENTS ……………………………………………………………………………… 49
11.4 PROCEDURES FOR MISSING DATA …………………………………………………………………………………………………. 49
11.5 ACCEPTANCE CRITERIA FOR EXISTING DATA …………………………………………………………………………………. 49
11.6 DATA UPLOAD PROCEDURES ……………………………………………………………………………………………………….. 49
12.0
AUDITS ……………………………………………………………………………………………………………………………………. 50
12.1 TECHNICAL SYSTEM AUDITS ………………………………………………………………………………………………………… 50
12.2 PROFICIENCY TESTING …………………………………………………………………………………………………………………. 50
13.0
DATA VERIFICATION AND USABILITY ASSESSMENT ……………………………………………………. 51
13.1 DATA VERIFICATION …………………………………………………………………………………………………………………… 51
13.2 DATA USABILITY ASSESSMENT ……………………………………………………………………………………………………… 51
14.0
DATA ANALYSIS METHODS & PRESENTATION ………………………………………………………………. 53
14.1 DATA ANALYSIS METHODS ………………………………………………………………………………………………………….. 53
14.1.1
Statistical Comparison of Pollutant Concentrations ……………………………………………………………. 53
14.1.2
Calculation of Pollutant Removal Efficiency ………………………………………………………………………. 53
14.1.3
Water Quality Treatment Performance ……………………………………………………………………………… 53
14.1.4
Length of Swale and Hydraulic Residence Time ………………………………………………………………….. 54
14.1.5
Manning’s n Verification ………………………………………………………………………………………………… 54
14.2 DATA PRESENTATION ………………………………………………………………………………………………………………….. 54
15.0
REPORTING …………………………………………………………………………………………………………………………… 59
15.1 FINAL REPORTING ………………………………………………………………………………………………………………………. 59
15.2 DISSEMINATION OF PROJECT DOCUMENTS …………………………………………………………………………………….. 59
16.0
REFERENCES ………………………………………………………………………………………………………………………….. 60
17.0
APPENDICES…