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Agenda - 09-01-2009 - 6a
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Agenda - 09-01-2009 - 6a
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Last modified
4/23/2013 12:36:46 PM
Creation date
8/28/2009 4:23:12 PM
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BOCC
Date
9/1/2009
Meeting Type
Regular Meeting
Document Type
Agenda
Agenda Item
6a
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Minutes - 20090901
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\Board of County Commissioners\Minutes - Approved\2000's\2009
RES-2009-065 Reimbursement Resolution - Solid Waste Transfer Station Project
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Path:
\Board of County Commissioners\Resolutions\2000-2009\2009
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were also conducted for relict shells. The presence of a shell was equated with presence <br />of that species; but not factored into the CPLTE. Representative photographs of each <br />species were also taken. <br />2.1 Streams 1 and 2 <br />Streams 1 and 2 are interni.ttent within the property boundary, and are. thus, considered <br />unsuitable for freshwater mussels. These two streams were evaluated at locations <br />downstream of the property to determine if suitable mussel habitat was present within <br />close proximity to the subject property. Stream 1 was evaluated at the Berry Andrews <br />Road crossing (Figure 1). The channel was mostly dry in this location, and suitable <br />habitat for freshwater mussels was not present. Stream, 2 was evaluated from a point <br />approximately 500 feet downstream of the IBC 54 crossing up to. the property boundary <br />(Figure 1). The streambed was totally dry during the site visit, and suitable habitat for <br />freshwater mussels was not present. <br />2.2 Stream 3 <br />Stream. 3 was determined to be perennial within the subject property. Mussel surveys <br />were conducted within the stream from a point approximately 2,100 feet downstream of <br />the property, upstream to a point where potentially suitable habitat for freshwater mussels <br />was considered no longer present (Figure 1). The stream is characterized as a <br />meandering channel ranging from 3 to 6 feet wide with slightly eroded clay banks 3 feet <br />high or less. Habitat consists of small riffles, with long ru . n/pool sequences. Substrate is <br />composed of sand, gravel and cobble, with .periodic bedrock, and large accumulations of <br />silt. A large amount of woody debris is also present in the channel. Timed mussel <br />surveys were conducted by wading in the stream using bathyscope (glass- bottom. view <br />buckets) and tactile methodologies. Leaf packs were also sifted through to, detect small <br />mollusk species. Pool and roan habitats were stagnant and a thick organic sheen covered <br />the surface of the water in much of the surveyed reach, making visual survey techniques <br />difficult. Mussel surveys totaled 2 person hours. <br />2.3 Collins Creek <br />A brief timed survey was conducted in Collins Creek approximately 3.23 miles <br />downstream of the subject property at the Old Greensboro Highway crossing (Figure 1). <br />Methodologies used include visual (bathyscope) and tactile. The channel ranges from 15 <br />to 20 feet wide, with moderately eroded clay banks 6 to 8 feet high. Riffle/run/pool <br />habitat sequences are present n the surveyed reach, and substrate consists of sand, cobble <br />and boulder, with accumulations of, silt in the pool habitats. Mussel surveys totaled 2.5 <br />person hours. <br />10 RESULTS <br />The survey results indicate that mussels are likely.not present withn the property <br />boundaries, but are present in Collins Creek well downstream of the property. <br />Freshwater Mussel Survey 2 <br />Orange County Transfer Station May 2009 <br />TCG Job 4 3250 <br />
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