HomeMy WebLinkAboutRS_25103 Ultima debits (3)Calculating Credits and Debits for Compensatory Mitigation in Wetlands of Western Washington
Debit Worksheet (corrected 5/5/13)Project Ultima
Mitigation Project is: Advanced_______ Concurrent_________ Delayed________x
Only fill in boxes that are highlighted. Use table for Temporal Loss Factors from the table below (Appendix E)
Input Ratings for Functions from Scoring Sheet
Wetland Unit Altered (#1) Wetland Unit Altered (#2) Wetland Unit Altered (#3)
Improving
Water
Quality Hydrologic Habitat
Improving
Water
Quality Hydrologic Habitat
Improving
Water
Quality Hydrologic Habitat
Site Potential (H,M,L)M L L M L L
Landscape Potential (H,M,L)M M L M M L
Value (H,M,L)M M L M M L
Score for Wetland Unit 6 5 3 6 5 3 3 3 3
Acres of non-forested areas impacted
0.0119 0.0107
Basic mitigation requirement (BMR) 0.0714 0.0595 0.0357 0.0642 0.0535 0.0321 0 0 0
Temporal loss factor (see below)3 3
DEBITS 0.2142 0.1785 0.1071 0.1926 0.1605 0.0963 0 0 0
Acres of Deciduous forest impacted
Basic mitigation requirement (BMR) 0 0 0 0 0 0 0 0 0
Temporal loss factor
DEBITS 0 0 0 0 0 0 0 0 0
Acres of Evergreen Forest impacted
Basic mitigation requirement (BMR) 0 0 0 0 0 0 0 0 0
Temporal loss factor (see below)
DEBITS 0 0 0 0 0 0 0 0 0
Acres of Cat. 1 Deciduous forest
Basic mitigation requirement (BMR) 0 0 0 0 0 0 0 0 0
Temporal loss factor (see below)
DEBITS 0 0 0 0 0 0 0 0 0
Acres of Cat. 1 Evergreen forest
Basic mitigation requirement (BMR) 0 0 0 0 0 0 0 0 0
Temporal loss factor (see below)
DEBITS 0 0 0 0 0 0 0 0 0
TOTALS Wetland Unit Altered (#1) Wetland Unit Altered (#2) Wetland Unit Altered (#3)
Function
Improving
Water
Quality Hydrologic Habitat
Improving
Water
Quality Hydrologic Habitat
Improving
Water
Quality Hydrologic Habitat
Acre-points 0.2142 0.1785 0.1071 0.1926 0.1605 0.0963 0 0 0
Total Debits by Function
Improving
Water
Quality Hydrologic Habitat
Acre-points 0.4068 0.339 0.2034
Timing of Mitigation Temporal Loss
Factor
Advance – At least two years has passed since plantings were completed or one
year since “as-built” plans were submitted to regulatory agencies
1.25
Concurrent – Physical alterations at mitigation site are completed within a year
of the impacts, but planting may be delayed by up to 2 years if needed to
optimize conditions for success.
For impacts to an emergent or shrub community
For impacts to a deciduous forested wetland community
For impacts to an evergreen forested wetland community
For impacts to a deciduous Category I forested wetland community
For impacts to an evergreen Category I forested wetland community
1.5
2.0
2.5
3
3.5
Delayed - Construction is not completed within one year of impact, but is
completed (including plantings if required) within 5 growing seasons of impact.
For impacts to an emergent or shrub community
For impacts to a deciduous forested wetland community
For impacts to an evergreen forested wetland community
For impacts to a deciduous Category I forested wetland community
For impacts to an evergreen Category I forested wetland community
3
4
5
6
7