Title: A Wetland Evaluation Method for The Everglades: Impact to Mitigation, Table 3: Example Calculations for Impacts and Required Mitigation for a Hypothetical Project
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Title: A Wetland Evaluation Method for The Everglades: Impact to Mitigation, Table 3: Example Calculations for Impacts and Required Mitigation for a Hypothetical Project
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Language: English
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Spatial Coverage: North America -- United States of America -- Florida
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Abstract: A Wetland Evaluation Method for The Everglades: Impact to Mitigation, Table 3: Example Calculations for Impacts and Required Mitigation for a Hypothetical Project
General Note: Box 8, Folder 3 ( Vail Conference, 1993 - 1993 ), Item 11
Funding: Digitized by the Legal Technology Institute in the Levin College of Law at the University of Florida.
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Bibliographic ID: WL00001297
Volume ID: VID00001
Source Institution: Levin College of Law, University of Florida
Holding Location: Levin College of Law, University of Florida
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Example Calculations for Impacts and Required Mitigation for a Hypothetical Project.


I. Impact Assessment: Land Development Project for Entire Tract


Symbol General Wetland Impact Acreage* x WQI = Impact WFV
Type
W1 herbaceous 300 0.28 84.0
(sawgrass)

W2 herbaceous 20 0.94 18.8
(wet prairie)

W3 forested 40 0.61 24.4
(non-cypress)

Total herbaceous acreage is 320, but each type must be separated due to differing WQI values.
However, the herbaceous WFV's may be totalled for determining mitigation acreage, unless the kinds
of functional values are very different. Note that W1 (shaded row) is carried through two scenarios in
mitigation, below.


II. Mitigation Acreage Requirements: Calculations for Approach Options


** Approach/type/timing factor (R-value) from Table 2: assume concurrent timing here.


U = Upland (non-jurisdictional)
W, = Sawgrass marsh wetland on marl soil
W2 = Wet prairie on peat soil
W3 Non-cypress forested wetland


Mitigation Weland Type WQI Improvement Wetland WFV of Mitigalion Miligation Mitigation
Approach for Replacement Basis Impact WFV x R-value** = Credit Required + WQI Basis = Acreage
Required
Creation herbaceous, sawgrass lake littoral shelves 84.0 1.20 100.8 0.90 112.0
0.90 WOI
herbaceous, wet prairie lake littoral shelves 18.8 1.20 22.5 0.90 25.1
0.90 WQI
forested, mixed created swamp forest 24.4 2.00 48.8 0.75 65.1
0.75 WQI
Restoration/ herbaceous, sawgrass Improve WQI from 84.0 1.09 91.6 0.62 147.7
Enhancement 0.23 to 0.85
herbaceous, wet improve WQI from 18.8 1.09 20.5 0.62 33.1
prairie 0.18 to 0.80
forested, mixed improve WQI from 24.4 1.82 46.6 0.53 87.9
0.19 to 0 72


Table 3.


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