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COMMERCE BUSINESS DAILY ISSUE OF APRIL 17, 1995 PSA#13264th Contracting Squadron, 4 CONS/LGCV, 1695 Wright Ave, Seymour Johnson
AFB NC 27531-2459 B -- STUDY AND BASELINE QUALITY ASSESSMENT OF CANAL SYSTEM Sol.
F31610-95-B0007. Due 050595. Contact: A. Denise Marshall, 919/736-6546,
ext: 233, Contracting Officer, Bobbie C. White, 919/736-5497, ext: 241.
Services nonpersonal to furnish all labor, tools, parts, materials,
facilities, and transportation necessary to inspect, quote, and provide
the following services: Conduct flow mechanics study and baseline water
quality assessment of the canal system at Dare County Range (DCR),
North Carolina (NC). The DCR is a 46,000 acre Air Force practice
bombing range located in northeastern NC. The range is crisscrossed by
over 100 miles of drainage canals. The canals were dug for a variety
of reasons including fill material for roads, fire control, and
drainage. The water in the canals originates from rainfall on the site
and from tidal action. Rainfall averages around 45 to 50 inches per
year. No rainfall records exist on site. Typical canal parallel roads
and range in width from 16 to 25 feet. Depth ranges from six to eight
feet. Often one bank side will be covered by heavy vegatation. Very
little is known about the actual movement of water through the canal
netowrk. The canals are connected to each other and either directly or
indirectly to Whipping Creek, Milltail Creek, Stumpy Point Bay, and
Long Shoal River. Tidal action of one to one and one-half feet causes
water to flow in and out of the canals. In the late 1980s, the US
Geological Survey conducted a tide level study in Albermarle Sound with
the objective of developing a flow model. Culverts with stop logs are
being installed at canal-road junctions throughout the range for
control. Operation of the stop logs will be entirely manual. No means
exist to monitor the water level changes resulting from changes in the
stop settings. OBJECTIVE: The purpose of this study is to establish
firm data concerning water quality and water movement on DCR. Data
obtained during this study will provide a baseline for further hydroloy
work at the range. SCOPE OF WORK: Flow Mechanics Study. Water in any
given canal can move in any given direction depending on levels in
adjacent canals. No meaningful assessment of water quality can begin
without understandin how water moves through the canals on the range.
The purpose of the flow mechanics study is to provide basic information
on water movement so that other studies can proceed. The flow mechanics
study will consist of two parts. First, the geometry of the system must
be determined. Second, some general idea of the direction and
quantities of flow must be obtained. Channel Geometry. The purpose of
the channel geometry study is to document the following items: (a).
Length and location of all canals on the range (b). Average geometry of
each canal on the range. (c). Relative elevation of all canal junctions
on the range (d). Relative elevation of all control structures on the
range (e). Geometry and flow characteristics of all control structures
on the range. The Contractor shall be responsible for the following:
Visit each canal, measure the length, locate on a map, and name the
canal section corresponding to the road it parallels. Each canal shall
be photographed. Measure a typical cross section in each canal (width,
depth, roughness). Measure relative elevation of all canal junctions on
the range using global positioning system (GPS) surveying equipment.
(Elevation accuracy to 10mm). Visit all control structures. Measure
relative elevation of each control structure using GPS equipment.
Measure width, depth, and roughness of each control structure.
Photograph each control structure. Basic Flow Assessment. The basic
study will take place during a one-day period. All key canal junctions
on the range will be visited, either by truck or boat, and discharge
measurements made to determine quantity and direction of flow. Local
tides will be recorded. Discharge measurements shall be made by
standard meters. All flow measuring equipment shall remain the property
of the government. Baseline Water Quality Assessment. The baseline
water quality assessment will be carried out at the same time as the
basic flow assessment. Sample of DO, temperature, pH, and conductivity
will be taken with automated equpment at the same time that flow
measurements are made. Point measurements will be made at regular
intervals (approximately 1/4 mile) throughout the canal system. GPS
data will be recorded along with the measurements to keep track of
position. Maps shall be developed to indicate the variation of DO,
temperature, pH, and conductively. These maps will clearly indicate
areas with basic quality problems. All measurement equipment shall
remain the property of the government. DELIVERABLES AND DELIVERY
SCHEDULE: Contractor shall provide written report, including maps of
the flow mechanics study within 30 days after completion of the field
work. Contractor shall provide written report, including maps of
baseline water quality assessment within 30 days after completion of
field work. GOVERNMENT FURNISHED MATERIALS: Government shall furnish
canoe of john-boat. CONTRACTOR QUALIFICATIONS: Contractor shall have a
good working knowledge of the DCR area including the road and canal
systems, Alligator River, Pamlico Sound, and Crotan Sound. All work
shall be accomplished or supervised by a professional hydrologist. This
solicitation is set-aside for small businesses. Request for
solicitation shall be in writing and include a nine digit zip code,
available from your local post office. Telephone request will not be
honored. FAX requests will be accepted, the fax number is (919)
705-2983. (100) Loren Data Corp. http://www.ld.com (SYN# 0020 19950414\B-0001.SOL)
B - Special Studies and Analyses - Not R&D Index Page
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