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Appendix A. Dust Suppression Ecology (PDF)
Appendix B. Eastern, WA Phase II Permit Appendix I Ecology (PDF)
Appendix C. Industrial SWPPP Guide Ecology (PDF)
Appendix D1. Industrial Stormwater General Permit Focus Sheet October 2009 (PDF)
Appendix D2. Industrial Stormwater General Permit 2019 (PDF)
Appendix D3. Industrial Stormwater General Permit Application 2010 (PDF)
Appendix D4. Industrial Stormwater General Permit Changes 2010 Permit (PDF)
Appendix E Generic Storage Area SWPPP (PDF)
Good Housekeeping City of Sunnyside Plans (PDF)
Good Housekeeping City of Union Gap Plans (PDF)
Good Housekeeping Model Plan Plans (PDF)
Good Housekeeping Yakima County Plans (PDF)
MS4 City of Sunnyside Plans (PDF)
MS4 City of Union Gap Plans (PDF)
MS4 Model Plan Plans (PDF)
MS4 Yakima County Plans (PDF)
Stormwater Pollution Prevention Plan
Appendix A. O and M
Appendix B. Inspection Forms
Appendix C IDDE Log
SWPPP_Sunnyside
SWPPP_18TH
Other Resources
2000 National Water Quality Inventory Factsheet (PDF)
2015 Yakima County Stormwater Utility Area Map (PDF)
Appendix 2 - Total Maximum Daily Load Requirements (PDF)
Appendix 4 - Annual Report Forms for Secondary Permittee (PDF)
BMP C252 High pH Neutralization using CO 2 (PDF)
BMP C253 pH Control for High pH Water (PDF)
Chapter 2 Updates (PDF)
Chapter 5 Updates (PDF)
HDR Regional Report (PDF)
Illicit Discharge Detection and Elimination Procedures (PDF)
Maps (PDF)
Model Illicit Discharge Ordinance (PDF)
Protecting Washington’s Waters from Stormwater Pollution (PDF)
Target Audience Identification Using the Simple Method Summary (PDF)
WA Department of Ecology NPDES - Phase II
Yakima County Regional Stormwater Manual (PDF)
Yakima County Stormwater Management Utility Ordinance (PDF)
Yakima Regional Low Impact Development Manual (PDF)
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