20221367 Ver 1_PART 4 - Executive Summary_Big Buffalo__20220926

TECHNICAL APPROACH AND RESTORATION PLAN
BIG BUFFALO MITIGATION SITE
CHATHAM COUNTY, NORTH CAROLINA
RFP #16-452048014 - FULL DELIVERY PROJECTS TO PROVIDE STREAM AND RIPARIAN WETLAND MITIGATION
CREDITS WITHIN CATALOGING UNIT 03030003 OF THE CAPE FEAR RIVER BASIN
PART 4: EXECUTIVE SUMMARY
Restoration Systems (RS) is pleased to provide you with this proposal in response to the Request for Proposals (RFP)
#16-452048014 dated June 28, 2022. This proposal describes the merits of the Big Buffalo Mitigation Site (Site). The
general content of this technical proposal includes the following:
Project Staffing and Organization — Part 5
Technical Approach — Part 6
- Project goals, objectives, description, development, and success criteria
- Proposed mitigation
- Current ownership and long-term protection of the Site
- Project phasing/implementation schedule
- Project success criteria
- Quality control procedures
Completed and signed RFP Attachments (D-G)
Completed Technical Scoresheet
The Site occurs within 14-digit Cataloging Unit 03030003070010 along North Prong Rocky River and unnamed
tributaries to North Prong Rocky River. The Site is located approximately 2.3 miles southwest of Liberty, in the
northwest corner of Chatham County. The Site is in a Water Quality Targeted Resource Area (TRA), a Habitat TRA,
a Hydrology TRA, a Targeted Local Watershed (TLW), and a Local Watershed Planning (LWP) area.
As summarized in the following table, the proposed mitigation was calculated per the requirements stipulated in
RFP #16-452048014.
Mitigation Activities and Site Credit Potential Summary
Stream Mitigation Type
Type
Linear Feet
Ratio
SMUS
Restoration
Priority 1
10,207.458
1:1
10,207.458
Enhancement
Level 1
1,932.773
1.5:1
1,288.515
Enhancement
Level 11
589.177
2.5:1
235.671
Enhancement
Level 11
1037.373
7.5:1
138.316
Enhancement
Level 11
5,475.117
10:1
547.512
Preservation
NA
1,741.896
10:1
174.190
Totals
20,983.794 linear feet
12,591.662 SMUs
Stream Buffer Credit Adjustment*
816.278**
Total SMUs
13,407.940 SMUs
*See Figure 8 (Appendix A) and the Wilmington District Stream Buffer Credit Calculator Output Table (Appendix A)
for stream buffer credit adjustment output and results.
**Additional credit generated by stream buffer credit adjustment was reduced by 5% to account for the margin of
error due to the lack of a design stream alignment at the current phase of project development.
Big Buffalo Mitigation Site Part 4— Executive Summary
Technical Proposal (RFP # 16-452048014)