HomeMy WebLinkAbout20150719 Ver 1_B-5243 Biological Conclusion Memorandum_20150828BEVERLY EAVES PERDUE
GOVF.RNOR
Memorandum To:
From:
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STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
EUGENE A. CONTI, JR.
SF,CRF.TARY
March 4, 2011
Erin Cheely, Western Environmental Specialist, Natural Environment
Project Management Group
Jared Gray, Environmental Program Consultant
Natural Environment Biological Surveys Group
Subject: Protected species survey report for the Carolina heelsplitter (Lasmigona
decorata) for the for the proposed bridge replacement of Bridge 258 over
South Fork Crooked Creek on SR 1008; Union County: Federal Aid
Project No. BRSTP-1008 (23); WBS Element 42845.1.1; TIP Project No.
B-5243.
Proposed Project B-5243
The proposed project calls for the replacement of Bridge No. 258 on SR 1008 (Indian Trail
Road) over South Fork Crooked Creek in Union County. South Fork Crooked Creek is located in
the Yadkin Pee Dee River Basin. A map of the project site is attached. The federally endangered
Carolina heelsplitter is listed by the U.S. Fish and Wildlife Service for Union County.
Background
The Carolina heelsplitter was historically known from several locations within the
Catawba and Pee Dee River systems in North Carolina and the Pee Dee and Savannah River
systems, and possibly the Saluda River system, in South Carolina. In North Carolina, the species is
now known only from a handful of streams in the Rocky and Catawba River systems.
The species exists in very low abundances, usually within 6 feet of shorelines, throughout
its known range. The general habitat requirements for the Carolina heelsplitter are shaded areas in
large rivers to small streams, often burrowed into clay banks between the root systems of trees, or
in runs along steep banks with moderate current. The more recent habitat where the Carolina
heelsplitter has been found is in sections of streams containing bedrock with perpendicular crevices
filled with sand and gravel, and with wide riparian buffers.
Prior to conducting in-stream surveys, a review of the North Carolina Natural Heritage
Program (NHP) database was conducted (February 18, 2011) to determine if there were any
records of rare mussels within the proposed project study area or receiving waters. This review
indicated that there are no known occurrences of the federally protected Carolina heelsplitter
within the project area. The closest population is in Goose Creek in Union County which is
over 30 miles away from this project. The DWQ database show that this portion of South
Fork Crooked Creek in the project vicinity is a 303d stream and has a major NPDES
discharger, which could eliminate long term viability for this species.
The section of South Fork Crooked Creek up and downstream from the project site
appears on DWQ's 2008 Draft Impaired Waters List as biologically criteria being exceeded and
parameters of interest are ecological and biological integrity for fish and benthos communities
(NCDWQ, 2008).
South Fork Crooked Creek has one major discharger downstream of the project. Crooked
Creek WWTP is downstream of the project near the confluence with East Fork Stewarts Creek and
South Fork Crooked Creek and is a major discharger that holds NPDES Permit # NC 0069841 to
discharge municipal wastewater into South Fork Crooked Creek. Chemicals in the discharge fi-om
this facility are likely to create an inhospitable environment for freshwater mussels.
Habitat Assessment Results
A habitat assessment was performed by NCDOT staff inembers Neil Medlin (Permit No.
NC-2011-ES-30) and Jared Gray on February 21, 2011. South Fork Crooked Creek at the project
crossing on SR 1008 was 3 meters wide with 1 meter wet width and banlc height was 1.5 meters
high. On the day of the site visit, the overall water depth was very shallow with 100% of the stream
reach less than 2 feet in depth. The creek contained runs and pool areas with normal substrate
compactness. The substrate above the bridge was generally dominated by sand, with some gravel
and a considerable amount of silt. Some of the substrate had filamentous algae on it. There was
also a portion of the creek upstream that had been lined with rip-rap and had been channelized. The
South Fork Crooked Creek had some eroding and undercutting of its banks. The stream had 85
percent cover up and downstream of the project crossing. South Fork Crooked Creek was
paralleled by a sewer easement. The substrate in South Fork Crooked Creek below the project
crossing was generally dominated by silt with some gravel, bedrock, cobble, clay and considerable
amounts of sand. The stream was 2 meters wide and had better habitat. The land use at the project
crossing looked to be urban.
The habitat assessment was conducted by wading visually looking in areas where the best
habitat occurred with no mussels being found in 0.5 man-hours of assessment time. NCDOT
biologist visually assessed South Fork Crooked Creek 300 meters above the project crossing to 100
meters downstream of the project crossing with no mussels or Carolina heelsplitters found in
this habitat assessment.
Carolina Heelsplitter
As a result of this habitat assessment, as well as the review of GIS and NHP data, it
appears that the Carolina heelsplitter does not exist in the project viciniry. Habitat for the Carolina
heelsplitter does not occur at the survey site. South Fork Crooked is on the NCDWQ newest 303d
list for turbidity. South Fork Crooked Creek also has one major discharger on it that is likely to
create inhospitable conditions for the Carolina heelsplitter. Isolation from Carolina heelsplitter
populations and water quality issues effectively render no habitat for Carolina heelsplitter. This
project over South Fork Crooked Creek is over 30 miles upstream from the nearest population of
Carolina heelsplitter in Goose Creek. This project will have no effect on the Carolina
heelsplitter.
Biological Conclusion No Effect
References
NatureServe. 2007. NatureServe Explorer: An online encyclopedia of life [web application].
Version 6.2. NatureServe, Arlington, Virginia. Available http://www.natureserve.or /g explorer.
(Accessed 02/18/11).
NCDWQ. 2008a. North Carolina Division of Water Qualiry Assessment and Impaired waters 303
(d) list draft report. http://h2o.enr.state.nc.us/tmdl/documents/B.Draft2008303dList.pdf (Accessed
02/18/11).
NCDWQ. 2008b. North Carolina Division of Water Quality Basinwide Planning Program:
Yadkin Pee Dee River Basinwide Water Quality Plan. NPDES Dischargers & Individual
Stormwater Permits. htt�://h2o.enr.state.nc.us/basinwide/Neuse/2008/Yadkin2008
(Accessed 02/18/11).
NC Natural Heritage Program. 2009. North Carolina Natural Heritage Program database
(Accessed 02/18/11). Raleigh, N.C.
[NCWRC] North Carolina Wildlife Resources Commission. North Carolina Mussel Atlas:
http://www.ncwildlife.org/p�07_WildlifeSpeciesCon/pg7blal.htm. (Accessed 02/18/11).
[USFWS] United States Fish and Wildlife Service. Carolina heelsplitter in North Carolina.
http://www.fws.gov/nc-es/mussel/carolheel.html. (Accessed 02/18/11)
Cc: Christy Huff, Project Development Engineer, Bridge Group
File: B-5243
0 0.5 1 Miles N
6-5243 Union County
Replace Bridge No. 258 on SR 1008
over South Fork Crooked Creek.
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