ERP Special Basin Criteria Orange County Environmental Streamlining Task Force July 20, 2011

1. ERP Special Basin Criteria Orange County Environmental Streamlining Task Force July 20, 2011

2. David Dewey Victoria Nations St. Johns River Water Management District 975 Keller Road Altamonte Springs, FL 32714 (407) 659-4800 DDewey@sjrwmd.com VNations@sjrwmd.com

3. Special basin criteria • Upper St. Johns River Basin • Ocklawaha River Basin • Wekiva River Basin • Wekiva Recharge Protection Basin • Econlockhatchee River Basin • Lake Apopka Basin • Sensitive Karst Basin • Tomoka River/Spruce Creek Basin

6. ERP Surface Water Thresholds • Thresholds (40C-4.041, F.A.C.) • Project area – 40 acres • Wekiva north of S.R. 436, Econ., Tomoka/Spruce Creek-10acres • Wetland impacts • Any work within Wekiva RHPZ • Impound water – 40 acre feet storage • Impervious surface – 12 acres, > 40% • Econ., Tomoka/Spruce Creek-2 acres • Wekiva north of S.R. 436-1/2 acre

7. ERP Stormwater Thresholds • Thresholds (40C-42, F.A.C.) • 4000 square feet of impervious surfaces subjected to vehicular traffic. • 9000 square feet total impervious surfaces

8. Wekiva Recharge Protection Basin (Recharge Standard) • Must demonstrate retention storage of 3 inches of runoff • For projects constructed in “A” type soils • Must percolate in 72 hours • Demonstrate post development recharge is equal to pre development recharge. • Submit geotechnical information show not “A” type soils

9. Wekiva Recharge Protection Basin

11. Wekiva River Hydrologic Basin Standards • Storage Standard • Erosion and Sediment Control and Water Quality Standard • Limiting Drawdown Standard • Riparian Wildlife Habitat Standard • Local Government Notification for Wekiva River Protection Area.

12. Wekiva River Hydrologic BasinStorage Standard • No net reduction in flood storage of 100 year floodplain of stream or other watercourse with upstream drainage area of more that 1 square mile and has direct hydrologic connection to Wekiva, Little Wekiva or Black Water Creek.

13. Wekiva River Hydrologic BasinErosion & Sediment Control and Water Quality Standard Water Quality Protection Zone -extend ½ mile from Wekiva River, Little Wekiva north of S.R.436, Black Water Creek, Rock Springs Run, Seminole Creek and Sulphur Run -extend ¼ mile from any wetland abutting an Outstanding Florida Water

14. Wekiva River Hydrologic BasinErosion & Sediment Control and Water Quality Standard Water Quality Protection Zone -must submit detailed erosion & sediment control plan -must show during construction, erosion will be minimize and sediment controlled on-site

15. Wekiva River Hydrologic BasinErosion & Sediment Control and Water Quality Standard Water Quality Protection Zone -Projects within 100 feet of OFW or within 100 feet of a wetland abutting such water, show construction not cause sedimentation and runoff filtered before entering waters.

16. Wekiva River Hydrologic BasinErosion & Sediment Control and Water Quality Standard Water Quality Protection Zone • Presumed to meet standard if- • Minimum 100 ft. buffer landward of OFW or wetland abutting OFW and during construction water allowed to sheetflow across undisturbed vegetation, or

17. Wekiva River Hydrologic BasinErosion & Sediment Control and Water Quality Standard Water Quality Protection Zone • Presumed to meet standard if- • construction of perimeter controls at outfall points completed prior to any other construction. Controls such as retention ponds, sedimentation basins, spreader swales., or

18. Wekiva River Hydrologic BasinErosion & Sediment Control and Water Quality Standard Water Quality Protection Zone • Presumed to meet standard if- • no discharge during 10 year 24 hour storm event, recover storage in 24 hours.

19. Wekiva River Hydrologic BasinStandard for Limiting Drawdown -Water Quantity Protection Zone - extend 300 feet landward of the landward extent of Black Water Swamp, wetlands abutting Wekiva River, Little Wekiva River, Rock Springs Run, Black Water Creek, Sulphur Run, Seminole Creek, Lake Norris and Lake Dorr

20. Wekiva River Hydrologic BasinStandard for Limiting Drawdown -Water Quantity Protection Zone - Must demonstrate water table drawdown that will adversely affect functions of wetlands - Analysis include extent of drawdown, site specific hydrogeologic data and description of wetlands.

21. Wekiva River Hydrologic BasinLocal Government Notification District not issue a permit for project in or partially in Wekiva River Protection Area until appropriate local government provide written notification that activity is consistent with local comp. plan and is in compliance with land development regulations.

22. Wekiva River Protection Area

24. Econlockhatchee Hydrologic Basin (Criteria) • Design Storm (mean annual and 25 year) • Floodplain Storage (no net reduction in 100 year floodplain of Econ. River or its tributaries, at a location with upstream drainage area of 1 square mile) • Riparian Wildlife Habitat Standard

25. Standards for Riparian Wildlife Habitat (40C-41, F.A.C.; Section 11, MSSW A.H.) In the Wekiva River Hydrologic Basin, applicants must provide reasonable assurance that the construction or alteration of a system will not adversely affect the abundance, food sources, or habitat of aquatic or wetland dependent species provided by RHPZ In the Econlockhatchee River Hydrologic Basin, applicants must provide reasonable assurance that the construction, alteration, operation, maintenance, removal, or abandonment of a system will not adversely affect the abundance, diversity, food sources, or habitat of aquatic or wetland dependent species provided by the designated RHPZ

26. Standards for Riparian Wildlife Habitat (continued) Activities that are presumed to adversely affect these functions the RHPZ provides to aquatic or wetland dependent species: construction of buildings, golf courses, impoundments, roads, canals, ditches, swales, and any land clearing which results in the creation of any system. Activities not listed do not receive a presumption of no adverse effect. This presumption does not apply to activities that promote a more endemic state, where the land in the zone has been changed by man.

27. Wekiva River RHPZ 1. The wetlands abutting the Wekiva River, Little Wekiva River downstream of Maitland Blvd., and several named tributaries 2. The uplands that are within 50 feet landward of the landward extent of the wetlands in 1. 3. The uplands which are within 550 feet landward of the stream's edge, as defined:- waterward extent of the forested wetlands, or - mean annual surface water elevation or the landward extent of the herbaceous emergent wetland vegetation

28. Econlockhatchee River RHPZ 1. The wetlands contiguous with the Econlockhatchee River, the Little Econlockhatchee River north of University Blvd., and several named tributaries2. The uplands that are within 50 feet landward of the landward extent of the wetlands in 1. ** This may include surface waters that are contiguous with these systems, including wetlands, lakes, ditches, and canals **

29. Econlockhatchee River RHPZ (continued) 3. The uplands which are within 550 feet landward of the stream's edge, as defined:- waterward extent of the forested wetlands, or - mean annual surface water elevation or the landward extent of the herbaceous emergent wetland vegetation 4. Lists portions of streams that typically lack a defined water's edge, where 3. does not apply

30. Roads and Traversing Works in the Econlockhatchee River RHPZ Applicants for permits to construct roads or traversing works in the RHPZ must also demonstrate the need for the traversing works to provide for regional transportation, regional utility services, or reasonable property access. Permittees responsible for traversing works must maintain the roads or traversing works clean and free from trash and debris to the greatest extent practical.

31. Off-site Land Preservation as Mitigation Econlockhatchee River Hydrologic Basin • Lands proposed for preservation as mitigation must be: • regionally significant or provide unique fish and wildlife habitat • located entirely within the Econlockhatchee River Basin • be conveyed in fee simple to the District (or a mutually acceptable designee) or a conservation easement or other acceptable legal instrument must be conveyed to the District (or a mutually acceptable designee) • Applicants must evaluate alternatives for avoiding adverse impacts • to the RHPZ and wetlands outside the RHPZ, • and avoid adverse impacts to the maximum extent practicable

32. Cumulative Impacts An applicant must provide reasonable assurances that a project will not cause unacceptable cumulative impacts to wetlands and other surface waters within the same drainage basin as the impacts If an applicant proposes mitigation within the same drainage basin as the impacts, and if the mitigation fully offsets these impacts, then the FDEP/SJRWMD will consider the project to have no unacceptable cumulative impacts on wetlands and other surface waters

34. Nested Basins and Cumulative Impact Review Wekiva River Nested Basin (15) is nested within St. Johns River (Wekiva to Welaka) Basin (14)Econlockhatchee River Nested (19) is nested within St. Johns River (Canaveral Marshes to Wekiva) Basin (18). For impacts that are outside of the nested basin, but within the larger basin, mitigation within the nested basin is considered “in-basin”. For impacts that are within the nested basin, mitigation within the larger basin, but outside of the nested basin, is considered to be “out of basin”.

35. David Dewey: DDewey@sjrwmd.com Victoria Nations: VNations@sjrwmd.com floridaswater.com / e permitting

36. RHPZ Descriptions

37. Wekiva River RHPZ (11.3.5, MSSW A.H.) 1. The wetlands abutting the Wekiva River, Little Wekiva River downstream of Maitland Boulevard, Rock Springs Run, Black Water Creek, Sulphur Run, or Seminole Creek; 2. The uplands which are within 50 feet landward of the landward extent of the wetlands above. 3. The uplands which are within 550 feet landward of the stream's edge as defined, for the purpose of this subsection, as the waterward extent of the forested wetlands abutting the Wekiva River, Little Wekiva River downstream of the northernmost crossing of the Little Wekiva River with S.R. 434, Rock Springs Run, Black Water Creek, Sulphur Run or Seminole Creek. In the absence of forested wetlands abutting these streams, the stream's edge shall be defined, for the purpose of this subsection, as the mean annual surface water elevation of the stream; however, if hydrologic records are unavailable, the landward extent of the herbaceous emergent wetland vegetation growing in these streams shall be considered to be the stream's edge.

38. Econlockhatchee River RHPZ (11.4.3, MSSW A.H.) 1. The wetlands contiguous with the Econlockhatchee River and the following tributaries: Little Econlockhatchee River north of University Boulevard, Mills Creek, Silcox Branch (branch of Mills Creek), Mills Branch (branch of Mills Creek), Long Branch, Hart Branch, Cowpen Branch, Green Branch, Turkey Creek, Little Creek, and Fourmile Creek; 2. The uplands which are within 50 feet landward of the landward extent of the wetlands above; and 3. The uplands which are within 550 feet landward of the stream's edge as defined, for the purpose of this subsection, as the waterward extent of the forested wetlands abutting the Econlockhatchee River and the above named tributaries. In the absence of forested wetlands abutting these streams, the stream's edge shall be defined, for the purpose of this subsection, as the mean annual surface water elevation of the stream; however, if hydrologic records are unavailable, the landward extent of the herbaceous emergent wetland vegetation growing in these streams shall be considered to be the stream's edge.

39. Econlockhatchee River RHPZ (11.4.3, MSSW A.H.) (continued) 4. The following portions of streams typically lack a defined water's edge, and subparagraph 3. shall not apply: a. Mills Creek upstream of the intersection of the creek with the Fort Christmas Road in Section 2, Township 22 South, Range 32 East; b. Long Branch upstream of the intersections of the creek with SR 520; c. Hart Branch upstream of the intersection of the creek and the Old Railroad Grade in Section 18, Township 23 South, Range 32 East; d. Cowpen Branch upstream of the southernmost bifurcation of the creek in Section 20, Township 23 South, Range 32 East; e. Green Branch upstream of the intersection of the creek with the north-south section line between Section 29 and 30, Township 23 South, Range 32 East;

40. Econlockhatchee River RHPZ (11.4.3, MSSW A.H.) (continued) f. Turkey Creek including Turkey Creek Bay upstream of the intersection of the creek with the Weewahootee Road in Section 5, Township 24 South, Range 32 East; g. Little Creek upstream of the intersection of the creek with the north-south section line between Sections 22 and 23, Township 24 South, Range 32 East; h. Fourmile Creek including Bee Tree Swamp upstream of a point along the creek exactly halfway between section lines at the south end of Section 21 and the north end of Section 33 within Section 28, Township 24 South, Range 32 East; and i. all of the Econlockhatchee River Swamp (a portion of the Econlockhatchee River).