ITB No. 24-2791-12EAR - Deitrick Road Outfall Rest...

Location: Virginia
Posted: Dec 12, 2024
Due: Jan 28, 2025
Agency: State Government of Virginia
Type of Government: State & Local
Category:
  • Z - Maintenance, Repair or Alteration of Real Property
Solicitation No: IFB 83645
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Details


IFB-83645


  • ITB No. 24-2791-12EAR - Deitrick Road Outfall Restoration
  • Status: Open
  • Time Left:46 days
  • Closing:1/28/25 3:00 PM
  • Issued:12/12/24 9:58 AM
  • Last Updated:
  • Buyer:Eric Rosen

  • ros074@henrico.gov
  • 804-501-5639



IFB-83645


  • ITB No. 24-2791-12EAR - Deitrick Road Outfall Restoration
  • Status: Open
  • Time Left:46 days
  • Closing:1/28/25 3:00 PM
  • Issued:12/12/24 9:58 AM
  • Last Updated:
  • Buyer:Eric Rosen

  • ros074@henrico.gov
  • 804-501-5639

  • Issued By:Henrico County Government
  • Opportunity Type:Invitation for Bids (IFB)
  • Category:Construction
  • Work Location:Department of Public Works
  • Website:https://henrico.gov/finance/divisions/purchasing/
  • Pre-Bid Conference:See solicitation documents for optional prebid/proposal conference/site visit.
  • Open Responses:See solicitation documents Public Opening information.
  • Summary:The Work consists of an outfall restoration for the site which will include an existing and restored reach length of 160 linear feet (LF). The restoration will utilize Natural Channel Design (NCD) techniques, the channel will be restored by utilizing priority level 2, raising the stream bed slightly and creating a bankfull bench within the confined valley. The banks along the floodplain of the confined channel will be graded back allowing for 2:1 slopes, creating greater stability. A B4a channel has been designed for the site with a steeper step pool sequence connecting upstream and downstream culvert elevations. Step and pool cross sections were developed using a combination of Virginia regional curve data, reference reaches, and onsite bankfull data collection.

    The Deitrick Road (site) Outfall Restoration is located on two Country Club of Virginia Inc. owned parcels (741-734-9261 & 739-732-9785), county owned easements, and right-of-way. The site is located at the intersection of Deitrick Road and Sandalwood Drive, directly northwest of the Country Club of Virginia - James River course 11th hole green. The outfall flows northwest to southeast from underneath Sandalwood Drive and drains into a culvert underneath the golf course. The site is bound primarily by residential land, forested areas, and roads.

    The total drainage area to the site is approximately 0.03 square miles, comprised of 26% impervious and 74% pervious surfaces. The upstream portion of the outfall channel lies within an unconfined valley which ends due to an existing six-foot headcut that is causing a backwater pool and further incision. Below the headcut the valley is confined and has downcut significantly with bank heights ranging from 5 to 7 feet tall. The existing water surface slope is 4% and according to the Rosgen classification of natural rivers methodology, the channel is classified as a moderately incised type A. Consistent land use changes in the boundary conditions have attributed to the lateral and vertical channel instability. Due to the unstable banks and pattern, significant sediment and erosional losses have been experienced.

    All denuded areas will be re-seeded, fertilized, matted, and planted with native woody stems and herbaceous cover. Large growth trees will be protected to the greatest extent practicable, allowing for increased seed dispersal and shade canopy for the newly planted seedlings.

Documents
Document Size Description Posted On Type
2791- eVA advertisement.pdf (125.47 KB) Invitation to Bid 12/12/24 RFx Document
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