NC0089699_Freshwater Mussel Survey Report_20170705

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Alderman Environmental Services, Inc.
5 July 2017
Freshwater Mussel Survey Report for Environmental Consulting and Technology, Inc.
Alderman Environmental Services, Inc. conducted in -stream, freshwater mussel surveys in the Dan River
on 13 and 29 June 2017 for Environmental Consulting and Technology, Inc. targeting the James
Spinymussel (Porvospino collino). Only two Eastern Elliptio (Elliptio complonato) were found during five
person hours within the 400 meter downstream to 100 meter upstream reach from the proposed
discharge pipe. No live individuals, shells, or shell fragments of freshwater mussels were documented
during 6 person hours within the 400 meter downstream to 100 meter upstream reach from the
proposed water intake location. AES staff determined the habitat to be of low quality for the James
Spinymussel due to high bedload transport, unconsolidated substrate, very high flowrate during high
water events, and low abundance and diversity of other freshwater mussel species within both surveyed
river reaches.
Biological conclusion: If appropriate erosion and sedimentation control practices are employed, there
should be no direct effects from project installations on the James Spinymussel within the two Dan River
surveyed reaches.

PROJECT: Dan River Freshwater Mussel Survey for Environmental Consulting and
Technology, Inc.
TARGET SPECIES: Federally listed endangered James Spinymussel (Parvaspina collina)
BIOLOGISTS: John Alderman
Joseph Alderman
Logan Williams
John Fridell
STATION 170613.1jma
LOCATION: Dan River, Rockingham County, Noith Carolina; upstream and downstream from
Settle Bridge Rd; 36.410863 N, 79.826474 W; see Figure 1
SURVEY DATE: 13 June 2017
SITE COMMENTS: Much bedload transport, poor quality habitat; 1 hour SCUBA, up to 2
meters deep
HABITAT:
WATERBODY TYPE:
FLOW:
RELATIVE DEPTH:
DEPTH (%<2 FEET):
SUBSTRATE:
COMPACTNESS:
SAND/GRAVEL BARS:
WOODY DEBRIS:
BEAVER ACTIVITY:
WINDTHRO W:
TEMPORARY POOLS:
CHANNEL WIDTH:
BANK HEIGHT:
BANK STABILITY:
RIPARIAN
BUFFER WIDTH:
LAND USE:
RIPARIAN VEGETATION:
PERCENT COVER:
WOODLAND EXTENT:
NATURAL LEVEES:
VISIBILITY:
WATER LEVEL:
River
Run, riffle, slack
Shallow
25
Sand dominanti Also present:
silt, gravel, pebble, cobble, boulder
Normal to unconsolidated
Present
Average
Evidence (gnawed sticks)
Low
Not observed
25+m
5+m
Very stable
Narrow to moc
Rural, pasture
Wooded with,.;
10+
Intermediate tc
At least one
Slightly turbid
Low
b-brush, grass
none

WEATHER: Sun/cloud, hot
TECHNIQUES AND SURVEY TIME:
TECHNIQUES: Visual, tactile, SCUBA
SURVEY TIME: 5 person -hours
FRESHWATER MUSSELS:
Elliptio complanata — 2 live
OTHER TAXA:
Corbicula fluminea

PROJECT: Dan River Freshwater Mussel Survey for Environmental Consulting and
Technology, Inc.
TARGET SPECIES: Federally listed endangered James Spinymussel (Parvaspina collina)
BIOLOGISTS:
John Alderman
Joseph Alderman
Logan Williams
John Fridell
STATION 170629.1jma
LOCATION: Dan River, Rockingham County, North Carolina; upstream and downstream from
36.390529 N, 79.88890 W; see Figure 1
SURVEY DATE: 29 June 2017
SITE COMMENTS: Much bedload transport, poor quality habitat; 1 hour SCUBA, up to 1.5
meters deep
HABITAT:
WATERBODY TYPE:
FLOW:
RELATIVE DEPTH:
DEPTH (%<2 FEET):
SUBSTRATE:
River
Run, riffle, slack
Shallow
20
Sand dominant. Also present:
silt, clay balls, ravel, pebble, cobble, boulder
COMPACTNESS:
Normal to unconsolidated
SAND/GRAVEL BARS:
Present
WOODY DEBRIS:
Average
BEAVER ACTIVITY:
Evidence (gna
ed sticks)
WINDTHROW:
Low
TEMPORARY POOLS:
Not observed
CHANNEL WIDTH:
30+m
BANK HEIGHT:
6+m
BANK STABILITY:
Some erosio
ndercuttine
BUFFER WIDTH: Moderate
LAND USE: Rural
RIPARIAN VEGETATION: Wooded with st.
rub -brush
PERCENT COVER: 10+
WOODLAND EXTENT: Intermediate
NATURAL LEVEES: At least one
VISIBILITY: Slightly turbid
WATER LEVEL: Normal

WEATHER:
Sunny, hot
TECHNIQUES AND SURVEY TIME:
TECHMQUES:
SURVEY TIME:
FRESHWATER MUSSELS:
None documented
OTHER TAXA:
Leptoxis carinata
Corbicula fluminea
Visual, tactile, SCUBA
6 person -hours

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Figure 1 1 e�1 . + . i I --
VICINITY MAP
Rockingham County. NC
Frcsh+Ater mussel suvey sites
Roads
streams
Date: 5 July 2017