ENVIRONMENTAL RESOURCE PERMIT APPLICANT’S …

1 ENVIRONMENTAL RESOURCE PERMIT APPLICANT S HANDBOOK VOLUME II FOR USE WITHIN THE GEOGRAPHIC LIMITS OF THE SOUTH FLORIDA WATER MANAGEMENT DISTRICT EFFECTIVE MAY 22, 2016 Volume II (including Appendices A, B, C, D and E) is incorporated by reference in Rule (1)(a) and Rule , ENVIRONMENTAL RESOURCE PERMIT APPLICANT S HANDBOOK VOLUME II Effective: MAY 22, 2016 2 AH VOL. II (MAY 22, 2016) ENVIRONMENTAL RESOURCE PERMIT APPLICANT S HANDBOOK VOLUME II FOR USE WITHIN THE GEOGRAPHIC LIMITS OF THE SOUTH FLORIDA WATER MANAGEMENT DISTRICT MAY 22, 2016 Table of Contents PART 1 INTRODUCTION, ORGANIZATION, APPLICABILITY .. 4 INTRODUCTION.

2 4 CRITERIA OBJECTIVES .. 5 DISTRICT-SPECIFIC THRESHOLDS .. 5 DISTRICT-SPECIFIC EXEMPTIONS .. 6 PART II GENERAL CRITERIA .. 6 GENERAL CRITERIA FOR ALL STORMWATER MANAGEMENT SYSTEMS .. 6 DEFINITIONS .. 6 PROFESSIONAL CERTIFICATION .. 8 WATER AND WASTEW ATER SERVICE AND CONCURRENT PROCESSING .. 8 RETROFITS OF EXISTING STORMWATER MANAGEMENT SYSTEMS .. 9 FLEXIBILITY FOR STATE TRANSPORTATION PROJECTS AND FACILITIES .. 11 PART III STORMWATER QUANTITY/FLOOD CONTROL .. 11 11 DISCHARGE RATE .. 11 DESIGN STORM .. 11 Methodologies .. 11 Aggregate Discharge .. 12 Upper Soil Zone Storage and Surface 12 FLOOD PROTECTION OF BUILDING FLOORS.

3 13 FLOOD PROTECTION OF ROADS AND PARKING LOTS .. 13 FLOOD PLAIN ENCROACHMENT .. 14 HISTORIC BASIN STORAGE .. 14 OFFSITE LANDS .. 14 MINIMUM DRAINAGE .. 14 OVERDRAINAGE AND WATER CONSERVATION .. 15 DETENTION AND CONTROL ELEVATIONS .. 15 LAKE-WETLAND SEPARATION .. 15 WATER SUPPLY SOURCES .. 16 PART IV STORMWATER QUALITY .. 16 STATE STANDARDS .. 16 How Standards are Applied .. 16 Erosion and Sediment Control Criteria for Stormwater Management Systems .. 17 Direct Discharges to Outstanding Florida Waters .. 17 Projects Discharging to Impaired Waters or to Outstanding Florida Waters .. 17 RETENTION / DETENTION CRITERIA .. 17 Volumetric Requirements.

4 17 Land Use and Coverage Criteria .. 18 INCORPORATION OF NATURAL AREAS AND EXISTING WATERBODIES .. 20 UNDERGROUND EXFILTRATION SYSTEMS .. 20 SEW AGE TREATMENT PERCOLATION PONDS .. 20 ENVIRONMENTAL RESOURCE PERMIT APPLICANT S HANDBOOK VOLUME II Effective: MAY 22, 2016 3 AH VOL. II (MAY 22, 2016) CRITERIA FOR CREATION OF WATERBODIES .. 20 IMPERVIOUS AREAS .. 21 STAGNANT WATER CONDITIONS .. 21 WATER QUALITY MONITORING .. 21 SOLID WASTE FACILITIES .. 23 PART V WATER MANAGEMENT SYSTEM DESIGN AND CONSTRUCTION CRITERIA .. 24 DISCHARGE STRUCTURES .. 24 CONTROL DEVICES/BLEED-DOWN MECHANISMS FOR DETENTION SYSTEMS .. 25 RETENTION SYSTEMS .. 25 Description.

5 25 Retention Basin Construction .. 26 Dry Retention/Detention Areas (Not Applicable to Natural or Mitigation Wetland Areas).. 26 WET DETENTION DESIGN AND PERFORMANCE CRITERIA .. 26 Pond Configuration .. 26 Wet Retention/Detention Area Dimensional Criteria (As Measured at or from the Control Elevation) .. 26 MAINTENANCE ACCESS AND EASEMENTS .. 28 EXFILTRATION 28 Description .. 28 Construction .. 28 REQUIRED DESIGN INFORMATION AND 29 Antecedent Conditions .. 29 Rainfall .. 29 Evapotranspiration .. 30 Storage .. 30 Open Surface .. 30 Infiltration and Percolation .. 31 Subsurface .. 31 Runoff .. 31 Receiving Water Stage.

6 31 Runoff Coefficient and Curve Number for Stormwater Management Ponds .. 32 INSPECTION AND MAINTENANCE .. 32 APPENDICES .. 33 APPENDIX A: SFWMD - ALLOWABLE DISCHARGE FORMULAS .. 1 APPENDIX B: ABOVE GROUND IMPOUNDMENTS .. 3 APPENDIX C: ISOHYETAL MAPS .. 11 APPENDIX D: SFWMD BASINS .. 20 APPENDIX E: PROCEDURE FOR ENVIRONMENTAL RESOURCE PERMIT WATER QUALITY EVALUATIONS FOR APPLICATIONS INVOLVING DISCHARGES TO OUTSTANDING FLORIDA WATERS AND WATER BODIES THAT DO NOT MEET STATE WATER QUALITY STANDARDS .. 21 ENVIRONMENTAL RESOURCE PERMIT APPLICANT S HANDBOOK VOLUME II Effective: MAY 22, 2016 4 AH VOL. II (MAY 22, 2016) PART 1 INTRODUCTION, ORGANIZATION, APPLICABILITY INTRODUCTION This Applicant s Handbook Volume II accompanies Chapter 62-330, Fla.

7 Admin. Code ( ), and the ENVIRONMENTAL RESOURCE PERMIT Applicant s Handbook Volume I (General and ENVIRONMENTAL ) (Applicant s Handbook Volume I). Applicant s Handbook Volume I is applicable to all ENVIRONMENTAL RESOURCE PERMIT applications, and provides b ackground information on the ENVIRONMENTAL RESOURCE PERMIT (ERP) program, including: Points of contact; A summary of the statutes and rules that are used to authorize and implement the ERP program; A summary of the types of permits, PERMIT thresholds, and exemptions; Procedures used to review exemptions and permits; Conditions for issuance of an ERP, including the ENVIRONMENTAL criteria used for activities located in wetlands and other surface waters.

8 Erosion and sediment control practices to prevent water quality violations; and Operation and maintenance requirements. This Volume is designed to be applicable only to those ERP applications that involve the design of a stormwater management system that requires a PERMIT as provided in Chapter 62- 330, , or Section (12) This volume also contains South Florida Water Management District (District) specific appendices for regionally-specific criteria such as basin maps for cumulative impact assessments (see Applicant s Handbook Volume I, Section ), mitigation bank service area determination (refer to Chapter 62- 342, ), and above ground impoundments.

9 Projects that qualify for a general PERMIT in Section (12), , are not regulated under Chapter 62-330, However, Applicant s Handbook Volume II contains design and performance standards that are relevant to the design of projects that qualify for that general PERMIT . This Volume provides specific, detailed water quality and quantity design and performance criteria for stormwater management systems regulated by the District through the ERP program authorized under Part IV of Chapter 373, This Volume explains, and provides more detail on, the rule criteria for stormwater quality and quantity contained in Chapter 62-330, In cases where conflicting or ambiguous interpretations of the information in this Volume results in uncertainty, the final determination of appropriate procedures to be followed will be made using Chapters 120 and 373, , applicable rule chapters.

10 And best professional judgment of Agency staff. ENVIRONMENTAL RESOURCE PERMIT APPLICANT S HANDBOOK VOLUME II Effective: MAY 22, 2016 5 AH VOL. II (MAY 22, 2016) Both Applicant s Handbook Volumes I and II are adopted by reference in Chapter 62-330, Applicant s Handbook Volume II is also incorporated in Rule , Both Applicant s Handbook Volumes I and II are rules of the Department and the District. The term Agency, where used in this Volume, shall apply to the Department, the District, or a delegated local government, as applicable, in accordance with the div ision of responsibilities specified in the Operating Agreements incorporated by reference in subsection (5) and Rule , , except where a specific Agency is otherwise identified.