Sweetwater Creek Watershed Mgmt. Plan 2007 Update--Part 2

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POLLUTANT LOADING AND REMOVAL MODEL U.S. Sources of zinc include industrial processes, transportation-related activities, atmospheric deposition and fertilizers. Relatively low zinc concentrations may reflect fate and transport characteristics of the particular systems sampled and/or the presence of fewer industrial processing facilities in Hillsborough County than other parts of the U.S.” 10.2.5 Existing Stormwater Treatment The type and coverage of BMPs providing stormwater treatment were also determined to estimate net pollutant loads from each subbasin. BMP coverage data was developed for each aggregate land use within each subbasin based on existing Environmental Resource Permit (ERP) data (Figure 10-9) provided by the SWFWMD and photo-interpretation of digital orthophotography. BMPs used to reduce loads generated by various land uses included wet ponds, percolation ponds (dry retention basins), grassed swales, infiltration trenches, on-line retention, off-line retention/detention, wet detention with natural wetlands, and infiltration/exfiltration. Table 10-5 provides the estimated removal efficiencies of a BMP for a given pollutant. Table 10-5 Estimated Pollutant Removal Efficiencies for Typical Stormwater BMPs BMP Type BOD 5 TSS TKN NO 3 +NO 2 TN TP TDP Oil & Wet Detention 60% 1 85% 1 30% 1 80% Percolation 80% 1 80% 1 80% 1 80% 1 1 Grease Cd Cu Pb Zn 30% 1 65% 1 80% 3 35% 2 75% 2 65% 1 75% 1 85% 1 80% 1 80% 1 80% 3 80% 3 80% 3 80% 1 80% 1 80% 1 Infiltration Trench 75% 4 60% 4 65% 4 65% 4 Grass Swale 60% 4 10% 4 15% 4 10% 4 20% 4 70% 4 60% 4 On-Line Retention 1 40% 1 85% 1 15% 1 95% 1 40% 1 50% 1 10% 1 25% 1 50% 1 70% 1 Off-line Retention/Detention 80% 1 90% 1 60% 1 85% 1 65% 1 75% 1 85% 1 (Dual Ponds) 1 Wet Detention with 60% 1 80% 1 30% 1 80% 1 30% 1 65% 1 80% 1 35% 1 75% 1 65% 1 75% 1 85% 1 Natural Wetlands Infiltration/Exfiltration 90% 1 90% 1 70% 1 70% 1 70% 1 60% 1 Source: 1 Harper, H.H. 1999. Pollutant removal efficiencies for typical stormwater management systems in Florida. Florida Water Resources Journal. 2 Kadlec, R.H. and R.L. Knight, 1996. "Treatment Wetlands." CTC Press, Inc. Boca Raton, Florida. 3 USEPA, 1993. "Guidance specifying management measures for sources of nonpoint pollution in coastal waters." U.S. Environmental Protection Agency, Office of Water, Washington, D.C. 4 Parsons Engineering Science, Inc. Unpublished Data. 10-16 Sweetwater Creek Watershed Management Plan
Legend Roads Hydrography County Boundary Subbasins WATER ERPs ESTES, LAKE Old US Hwy 41 ROCKET, LAKE CHAPMAN LAKE Lake Magdalene Blvd PLATT LAKE LONG LAKE Ehrlich Rd MAGDALENE, LAKE Bearss Ave I-275 Nebraska Ave BAY LAKE Fletcher Ave GEORGE LAKE Linebaugh Ave CITRUS PARK LAKE CASEY, LAKE Gunn Hwy Dale Mabry Hwy ELLEN, LAKE Lake Ellen Dr LIPSEY, LAKE CARROLL, LAKE BOAT LAKE Busch Blvd Waters Ave Anderson Rd 0 6,000 12,000 Feet Location of ERPs in the Sweetwater Creek Watershed Figure 10-9
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CHAPTER 8: EXISTING NATURAL SYSTEMS
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CHAPTER 8 Using the data described
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CHAPTER 8 Table 8-2 Land Use in the
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Legend Roads Hydrography Agricultur
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CHAPTER 8 Upland coniferous forest
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CHAPTER 8 where the hydroperiod (de
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CHAPTER 8 Intermittent ponds (653)
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CHAPTER 8 Communications (820) In t
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Legend Roads Hydrography County Bou
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CHAPTER 8 Habitat Fragmentation Hab
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CHAPTER 8 8.5.3 Identification of E
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CHAPTER 8 Within the 100 m buffer e
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CHAPTER 8 8.5.7 Wildlife The inform
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CHAPTER 8 Table 8-10 Protected Plan
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CHAPTER 8 • Category II are exoti
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CHAPTER 8 to the U.S. as experiment
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CHAPTER 8 8.5.9.2 Exotic Fauna An e
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CHAPTER 8 Hillsborough County Envir
Page 43 and 44: CHAPTER 8 8.6.2 Public Lands in the
Page 45 and 46: CHAPTER 8 High quality natural area
Page 47 and 48: CHAPTER 8 Hillsborough County Compr
Page 49 and 50: CHAPTER 8 and Hillsborough County t
Page 51 and 52: CHAPTER 8 9. My Water Activity Book
Page 53 and 54: CHAPTER 8 that addresses awareness
Page 55 and 56: CHAPTER 8 Carlisle, V.W., R.E. Cald
Page 57 and 58: CHAPTER 8 Wolfe, S. H., and R.D. Dr
Page 59 and 60: CHAPTER 8 redroot, Lachnanthes caro
Page 61 and 62: WATER SUPPLY At this point it is re
Page 63 and 64: WATER SUPPLY Southwest Florida Wate
Page 65 and 66: WATER SUPPLY 9.2 Groundwater Use Hy
Page 67 and 68: WATER SUPPLY Pumpage from Northwest
Page 69 and 70: WATER SUPPLY Figure 9-5 Rainfall an
Page 71 and 72: WATER SUPPLY 9.3 Surface Water Use
Page 73 and 74: WATER SUPPLY 9.4 Water Supply Issue
Page 75 and 76: WATER SUPPLY 9.4.2 Impacts Due to W
Page 77 and 78: WATER SUPPLY 9.5 BIBLIOGRAPHY The a
Page 79 and 80: CHAPTER 10: POLLUTANT LOADING AND R
Page 81 and 82: CHAPTER 10 The 12 different paramet
Page 83 and 84: Legend Roads Hydrography Agricultur
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Page 87 and 88: CHAPTER 10 Table 10-3 Runoff Coeffi
Page 89 and 90: Table 10-4 Event mean concentration
Page 91 and 92: Total Phosphorus Loading Potential
Page 93: CHAPTER 10 Literature reviews perfo
Page 97 and 98: Identification of BMPs Using Digita
Page 99 and 100: Legend Roads Hydrography County Bou
Page 101 and 102: CHAPTER 10 10.3 Pollutant Loads The
Page 103 and 104: Legend Roads Hydrography Subbasins
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Page 107 and 108: CHAPTER 10 Lowest loading values we
Page 109 and 110: CHAPTER 10 Generally, the two model
Page 111 and 112: WATER QUALITY TREATMENT LEVEL OF SE
Page 113 and 114: Note: Results of the NPS Pollutant
Page 115 and 116: Note: Results of the NPS Pollutant
Page 117 and 118: WATER QUALITY TREATMENT LEVEL OF SE
Page 119 and 120: CHAPTER 12: PUBLIC MEETING The firs
Page 121: CHAPTER 12 Following the Hillsborou
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Sweetwater Creek Watershed Mgmt. Plan 2007 Update--Part 2

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