SOLICITATION NOTICE
Y -- Seneca Bluffs
- Notice Date
- 5/3/2016
- Notice Type
- Presolicitation
- NAICS
- 237990
— Other Heavy and Civil Engineering Construction
- Contracting Office
- Department of the Army, U.S. Army Corps of Engineers, USACE District, Buffalo, 1776 Niagara St., Buffalo, New York, 14207-3199, United States
- ZIP Code
- 14207-3199
- Solicitation Number
- W912P4-16-B-0002
- Archive Date
- 6/1/2016
- Point of Contact
- Casimir Brzozowiec, Phone: 7168794232, Frank D'Andrea, Phone: 716-879-4245
- E-Mail Address
-
casimir.brzozowiec@usace.army.mil, frank.j.dandrea@usace.army.mil
(casimir.brzozowiec@usace.army.mil, frank.j.dandrea@usace.army.mil)
- Small Business Set-Aside
- Total Small Business
- Description
- The Buffalo District is currently preparing a solicitation to award a contract to restore and enhance riparian and aquatic habitat along the Buffalo River to address impairments associated with the Buffalo River Area of Concern, the Seneca Bluffs in Buffalo, New York. Specifically this work will help to address the "Loss of Fish and Wildlife Habitat" beneficial use impairment by addressing steep slopes and the lack of connectivity between aquatic and riparian environments. As the purpose of this work is to reverse the impacts that have partially been caused by hardening of shorelines, this work aims to reduce the use of shoreline hardening solutions to the minimum extent practical. This project is funded through the USEPA Great Lakes Restoration Initiative (GLRI) Program, and is being accomplished for USEPA under the authority of the Economy Act (31 U.S.C. 1535) by the USACE. The Buffalo River meanders around the project site and forms the northern and western boundary of the property. Channel width ranges from approximately 150 feet at the Seneca Street Bridge to approximately 250 feet upstream at the bend in the river. The river is shallow close to the LDB shore with average depths from zero to three feet. Water depth increases up to 15 feet near mid channel and along some areas along the right descending bank (RDB). The substrates in the river are composed of fine grained sediments, sand, and gravel. The channel is primarily a long run without the structure to produce riffle and pool features. There is no evidence of aquatic vegetation or emergent wetland areas in-channel. The stream bank throughout most of the site is formed by alluvial deposits of sand and gravel lenses. Six segments (reaches) of this river area described as follows: Reach 1 - This reach is the most upstream reach of the project site and comprises an island terrace that has been separated from the upland by a backflow channel. Shoreline erosion along this reach is moderate. Several large cottonwood trees are present on the island, however the vegetation community is dominated by Japanese knotweed (Polygonum cuspidatum) and common reed (Phragmites australis). The backwater channel is moderately incised and does not appear to support robust emergent vegetation as might be expected. This may be due to high flows that scour this area regularly. The upstream end of the backflow channel is choked with sediment and has a variable topography. Reach 2 - This reach is immediately downstream of the terrace island and immediately upstream of the highly eroded inner bend of the Buffalo River. The slope of the shore line is gradual and erosion is not significant. Phragmites dominates the higher elevation areas along the shoreline while Japanese knotweed dominates the areas further inland. A narrow swale runs parallel to the Buffalo River along the toe of the lower terrace and eventually connects with the Buffalo River. This swale is slightly lower than most of the surrounding area and thus maintains more frequent and longer duration of inundation. This is reflected by the presence of less phragmites and knotweed and more native wetland vegetation. Reach 3 & 3a - This reach is characterized by heavy erosion along the bank of the lower terrace. The river bank in this area is vertical and is actively eroding. At some locations the height from top of bank to the toe is 10 feet. The lower terrace at this location is approximately 100 feet wide with an understory dominated by knotweed and an overstory of willow. Reach 4 - The shoreline is narrow in the downstream area from the bridge to the lower terrace with the exception of a broad area of deposition along the base of the bluff feature. This gravel and sediment bar has grown considerably in the last 20 years based on observation and aerial photo interpretation. In early stages of formation, it was an extended shoreline along the LDB, but has grown to approximately 80 feet wide and approximately 200 feet long and supports well established shrub and herbaceous species. Although some non-native species are present including purple loosestrife, Phragmites, and Japanese knotweed, most of the community is dominated by native species. An overflow channel has formed to the west of the bluff along the toe of the LDB that carries water downstream only during high flow conditions. This channel maintains native emergent vegetation including arrow-head (Sagittaria latifolia) and Polygonum spp. The nearly vertical bluff feature adjacent to the overflow channel provides nesting for the northern rough-winged swallow (Stelgidopteryx serripennis). The bluff is relatively stable due to its location in relation to the depositional gravel bar located in the nearshore at the toe of the stream bank. However, the bluff may evolve into a naturally sloped bank over time due to the gravel toe protection, stable stream bank vegetation and subsequent reduced undercutting by scouring flows. Reach 5 - Aside from the first 30 feet of downstream shoreline that is armored with large stone, this reach is un-armored and vegetated with a mixture of eastern cottonwood (Populus deltoides), European black alder (Alnus glutinosa), crack willow, box elder (Acer negundo), green ash (Fraxinus pennsylvanica), common buckthorn (Rhamnus cathartica), Japanese knotweed (Polygonum cuspidatum), bush honeysuckle (Lonicera morrowii), common mugwort (Artemisia vulgaris), and native herbaceous species. Reach 6 - The LDB upstream of the bridge is protected by sheet-pile bulkhead from the bridge to a point approximately 300 feet upstream. Specific work to be performed for each reach is currently being finalized but overall work will include : invasive species treatment, bank protection, construction, seeding and live staking. Additional information can be found at: http://www.lrb.usace.army.mil/Portals/45/docs/ProjFact/FEB%202016%20Congressionals/Seneca%20Bluffs%20Restoration%20Economy%20Act-IIS-455358-NY.pdf
- Web Link
-
FBO.gov Permalink
(https://www.fbo.gov/spg/USA/COE/DACW49/W912P4-16-B-0002/listing.html)
- Place of Performance
- Address: Seneca Bluffs is a 15-acre site located along the left descending bank (LDB) of the Buffalo River, upstream of the Seneca Street Bridge in the city of Buffalo. The site is approximately 6.3 miles upstream from the mouth of the river and is one of a series of pocket parks along the Buffalo River owned, developed, and managed by Erie County. Volunteers, with support from the Erie County Department of Parks, maintain the park. Adjacent land uses include residential, commercial, and industrial., Buffalo, New York, 14210, United States
- Zip Code: 14210
- Zip Code: 14210
- Record
- SN04103627-W 20160505/160503234828-6dff5f4e6464b0bd35d75b74173db22e (fbodaily.com)
- Source
-
FedBizOpps Link to This Notice
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