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STORMWATER MANAGEMENT PROGRAM (SWMP)

STORMWATER MANAGEMENT PROGRAM (SWMP) azpdes Permit No. AZS000002 Revised September, 2015 STORMWATER MANAGEMENT PROGRAM Pima County Department of Environmental Quality 33 N. Stone Avenue, Suite 700 Tucson, Arizona 85701-1429 Phone 520-243-7400 FAX 520-838-7432 September, 2015 Pima County 2015 STORMWATER MANAGEMENT PROGRAM . Report azpdes Permit No. AZS000002 Page i of ii Table of Contents INTRODUCTION 1 A. Overview 1 B. Regulatory Framework 2 C. Description of Permit Area 5 Part I.

construction projects and the Multi-sector General Permit (MSGP) issued to industrialor commercial facilities. An AZPDES De General Permit has also been issued allowing Minimis

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Transcription of STORMWATER MANAGEMENT PROGRAM (SWMP)

1 STORMWATER MANAGEMENT PROGRAM (SWMP) azpdes Permit No. AZS000002 Revised September, 2015 STORMWATER MANAGEMENT PROGRAM Pima County Department of Environmental Quality 33 N. Stone Avenue, Suite 700 Tucson, Arizona 85701-1429 Phone 520-243-7400 FAX 520-838-7432 September, 2015 Pima County 2015 STORMWATER MANAGEMENT PROGRAM . Report azpdes Permit No. AZS000002 Page i of ii Table of Contents INTRODUCTION 1 A. Overview 1 B. Regulatory Framework 2 C. Description of Permit Area 5 Part I.

2 PUBLIC EDUCATION AND OUTREACH 9 A. Permit Requirements 9 B. Implementation 10 C. Five Year Education and Outreach Plan 12 Part II. PUBLIC INVOLVEMENT AND PARTICIPATION 13 A. Permit Requirements 13 B. Implementation 13 Part III. ILLICT DISCHARGE DETECTION AND ELIMINATION (IDDE) 15 A. Practices to prevent illicit discharges 15 B. Procedures for Field Screening 16 C. Proper MANAGEMENT of Used Oils and Hazardous Toxic Substances 17 D. Staff training in Field Screening 17 E. Investigating Potential Illicit Discharges 18 Part IV.

3 COUNTY FACILITIES POLLUTION PREVENTION AND GOOD . HOUSEKEEPING PRACTICES 19 A. Controls for Pesticides, Herbicides, and Fertilizers 19 B. Spill Prevention and Response 20 C. Training 20 Part V. RESIDENTIAL AND COMMERCIAL CONTROL MEASURES 21 A. Drainage system maintenance 21 B. Controls for New Development and Significant Redevelopment 21 C. Roadway Maintenance 21 D. Additional Practices to Reduce Pollutants from Residential/Commercial areas 22 Part VI. INDUSTRIAL FACILITIES 23 A.

4 Identification of Priorities and Implementing Controls 23 B. Inspection and Monitoring 23 C. Compliance Activities/Enforcement 24 D. Control Measures from Landfills, Waste Facilities, and Industrial Facilities 24 E. County Employee Training 24 Part VII. CONSTRUCTION SITES 25 A. Review Construction Site Plans 25 B. Structural and Non-structural Control Measures 26 Pima County 2015 STORMWATER MANAGEMENT PROGRAM . Report azpdes Permit No. AZS000002 Page ii of ii C. Site Inspections and Enforcement 26 D.

5 Other Practices to Control Pollutants from Construction Sites 27 Part VIII. WATERSHED MONITORING 29 A. Wet Weather Monitoring 29 B. Discharge Characterization 29 Part IX. PROGRAM ASSESSMENT, REPORTS AND REVISIONS 31 A. Annual PROGRAM Assessment and Update 31 B. Reporting Requirements 31 C. SWMP Revisions 31 Part X. REFERENCES 33 LIST OF FIGURES Figure 1. 2011 Pima County STORMWATER Permit Area 1 Figure 2. Designated Water Uses within STORMWATER Permit Area 6 Figure 3.

6 Watersheds within Pima County 7 Figure 4. Wet and Dry Weather Monitor Points in Permit Area 16 LIST OF TABLES Table 1. Grouped Designated Water Uses within Pima County STORMWATER Permit Area 6 Table 2. Five Year Public Education and Outreach Plan 12 APPENDICES Appendix A. Surface Water Quality in Pima County Appendix B. Pima County Ordinances and Policies Appendix C. Major Outfalls Appendix D. County Facility Inventory Appendix E. GIS Map Inventory Appendix F. Open Space Conservation Land Inventory Appendix G. Non-county Industrial and Commercial Facility Inventory Appendix H.

7 Inventory of Facilities with Potential for Hazardous Substances Appendix I. Sample and Analysis Plan for STORMWATER MANAGEMENT PROGRAM Appendix J. Certification Statement Appendix K. Standard Operating Procedures Pima County 2015 STORMWATER MANAGEMENT PROGRAM . Report azpdes Permit No. AZS000002 Page 1 of 35 INTRODUCTION A. Scope Pima County manages STORMWATER in accordance with the Arizona Pollutant Discharge Elimination System ( azpdes ) Permit AZS000002 that authorizes the discharge of STORMWATER from the municipal separate storm sewer system (MS4) to receiving waters.

8 The MS4 consists of 2,087 miles of roads, 39 miles of storm drains, and infrastructure carrying runoff into drainage ways or ephemeral stream channels (Figure1). All of the water bodies within the permit area meet Surface Water Quality Standards. This STORMWATER MANAGEMENT PROGRAM (SWMP) describes the control measures Pima County uses to protect surface water quality. Figure 1. 2011 Pima County STORMWATER Permit Area Pima County 2015 STORMWATER MANAGEMENT PROGRAM . Report azpdes Permit No. AZS000002 Page 2 of 35 The initial SWMP was prepared in conformance with the first MS4 permit issued by the United States Environmental Agency (USEPA) in 1997.

9 This PROGRAM was revised as required by the second MS4 permit issued by the Arizona Department of Environmental Quality (ADEQ) in 2011. The revised SWMP describes the implementation of public education and outreach, public involvement and participation, illicit discharge detection and elimination (IDDE), pollution prevention and good housekeeping practices at Pima County facilities, and pollutant reduction measures in residential areas, commercial areas, industrial facilities and construction sites.

10 The control measures are designed to restore and maintain the chemical, physical, and biological integrity of the receiving waters (33 1251(a)). Restoring and maintaining the integrity of surface water is essential for protecting public health and the environment (Pima County, 2012a). B. Regulatory Framework STORMWATER regulations originated with the federal Clean Water Act, which includes the delegation of the PROGRAM to qualified states. In Arizona, the state issues MS4 permits. Local jurisdictions have also written ordinances and policies impacting STORMWATER MANAGEMENT .


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