HomeMy WebLinkAbout20170086 Ver 1_Caldwell #123 Bat Survey_20170120Transportation
TO
[K1J
FROM
Apri14, 2016
Pam Williams, Project Engineer
Priority Projects Unit, Technical Services
Heath Slaughter, Division Environmental Officer
Highway Division 11
Chris Manley, Environmental Program Consultant
Biological Surveys Group, NES - PDEA
PAT McCRORY
Governo�
NICHOLAS J. TENNYSON
Secretary
SUBJECT: Section 7 Survey Memo for the Northern Long-Eared Bat (Myotis
septentrionalis) and the Virginia big-eared bat (Corynorhinus townsendii
virginianus) associated with the replacement of Bridge 123 over Estes Mill
Creek on SR 1356 in Caldwell County, WBS No.17BP.11.R.120.
The North Carolina Department of Transportation (NCDOT, Division 11) proposes to replace
Bridge No.123 over Estes Mill Creek on SR 1356 in Caldwell County, WBS No.17BP.11.R.120.
The existing bridge is a single span structure with a timber floor on I-beams, and timber caps,
posts and sills with a wood guardrail. The overall length of the structure is 26• feet.
The project to replace Bridge No. 123 has been reviewed for effects on the northern long-
eared bat (NLEB). As of May 4, 2015, 1VLEB is listed by the U.S. Fish and Wildlife Service
(USFWS) as "Threatened" under the Endangered Species Act of 1973. As of April 4, 2016,
NLEB is listed by USFWS as "current" in Caldwell County
(http�//www fws gov/raleigh/snecies/cntylist/nc counties.html). USFWS also established a
�nal rule under the authority of section 4(d) of the Endangered Species Act that provides
measures for the conservation of NLEB. The USFWS has tailored the final4(d) rule to prohibit
the take of NLEB from certain activities within areas where they are in decline. This incidental
take protection applies only to known NLEB occupied maternity roost trees and known NLEB
hibernacula. Effective February 16, 2016, incidental take resulting. from tree removal is
prohibited if it 1) occurs within a 1/4 mile radius of known NLEB hibernacula; or 2) cuts or
destroys known occupied maternity roost trees, or any other trees within a 150-foot radius
from the known maternity tree during the pup season (June 1-July 31J. According to the North
Carolina Natural Heritage Program (IVHP) Biotics Database, most recently updated October
2015, the nearest NLEB hibernacula record is 10 miles away (EO ID 32171) and no known
NLEB roost trees occur within 1/4 mile of the�project area. EO 32171 represents the Black
Rock Cliffs Cave site with multiple observations from 1986 to 2011.
For the proposed action, NCDOT has committed to the conservation measures listed below:
�Nothing Compares=��
State,of North Carolina � Deparhnent of Transportation � PDEA-Natural Environment Section
1020 Birch Ridge Drive,27610 � 1598 Mail Service Center � Raleigh; North Carolina 27699-1598
919-707-6000 T 919-212-5785 F
1) No alterations of a known hibernaculum's entrance or interior environment if it
impairs an essential behavioral pattern, including sheltering Northern long-eared
bats (January 1 through December 31);
2) No tree removal within a 0.25 mile radius of a known hibernacula (January 1 through
December 31); and
3) No cutting or destroying a known, occupied maternity roost tree, or any other trees
within a 150-foot radius from the known, occupied maternity tree during the period
from June 1 through and including July 31.
NCDOT has determined that the proposed action does not require separate consultation on
the grounds that the proposed action is consistent with the final Section 4(d) rule, codified at
50 C.F.R. § 17.40(0) and effective February 16, 2016. Section 7 responsibilities are therefore
considered fuliilled. �
The project to replace Bridge No. 1'23 has also been reviewed for effects on the Virginia big-
eared bat (VABEB). As of November 30,1979 the Virginia big-eared bat was listed by the U.S.
Fish and Wildlife Service (USFWS) as "Endangered" under the Endangered Species Act of �
1973. As of Apri14, 2016 the Virginia big-eared bat is listed by USFWS as "current" in Caldwell
County (htt�//www fws gov/rale�h/snecies/cntylist/nc counties.html).
According to the 1Vorth Carolina Natural Heritage Program (NCNHP) Biotics Database, most
recently updated in October 2015, the closest known occurrence of VABEB is approximately
10 miles northwest of the project site. (EO ID 11901). EO 11901 represents Black Rock
Mystery Hole site with multiple observations from1986-2014.
A habitat assessment for VABEB was conducted on March 10, 2016 by NCDOT biologists.
Bridge No. 347 was inspected and no evidence of bats was observed. A small "cave-like"
feature was observed (approximately 260 feet away) from the bridge. NCDOT biologists
inspected the feature and found it to be not suitable bat habitat. Two mines occur within
three miles of the project footprint. These mines are noted below, but were not
investigated in the field. .
Mine Name � Distance to Project � Type
Miller Quarry I Within 3 miles I Surface
Dickson Mine Withm 3 miles Surface
Based on the lack of evidence of bats during the bridge inspection, the lack of suitable caves �
or mines in the project vicinity, and the distance to known occurrences of VABEB, the
proposed project will have a biological conclusion of NO EFFECT for Virginia big-eared bats.
If you need any additional information, please contact Chris Manley at 919-707-6135.