B09_-_IRA_WCS_Clean_Out_Site_Visit_Q_A_7_30_24_0001.pdf
PDF 121 KB Posted
- Attached to
- NC ALLIGATOR RIV NWR CANAL CLEAN UP
- Solicitation number
- 140FS324Q0141
About this file
This document contains the questions and answers from a site visit regarding a federal contract opportunity for IRA Funded Water Control Structures Cleaning on the Alligator River National Wildlife Refuge. The key details are:
The contract is for cleaning out water control structures on the Alligator River NWR. The Performance Work Statement (PWS) calls for installing permanent debris curtain booms to help channel debris to the sides of the canals where it can be manually removed. The depth of the canals is approximately 6-7 feet of water with additional muck at the bottom. The contract requires installing 20-foot long posts 5 feet apart to support the debris curtains, using a method (pounded, jetted, etc.) that will keep the posts in place. The cleaning is expected to occur at least monthly after the contract is completed, targeting tree limbs, grasses, and sediment. The government will handle any necessary permits if the contractor uses a cofferdam to facilitate the cleaning. The contract solicitation number is 140FS324Q0141.
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Other files
| File | Type | Posted |
|---|---|---|
| B09_-_PWS_IRA_WCS_Clean_Out_-_UPDATED_7_30_24_0001.pdf | ||
| Sol_140FS324Q0141_Amd_0001.pdf | ||
| B08_-_Past_Experience_and_References_Form.doc | DOC document | |
| B08_-_QASP_IRA_Funded_WCS_Clean_Out.docx | DOCX document | |
| Sol_140FS324Q0141.pdf | ||
| B08_-_PWS_IRA_Funded_WCS_Clean_Out.pdf | ||
| B03_-_Wage_Determination_2015-4407.pdf |
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Text version
United States Department of the Interior U.S. FISH & WILDLIFE SERVICE – Alligator River NWR
PO Box 1969, Manteo, NC 27954
140FS324Q0141
IRA Funded Water Control Structures Cleaning On Alligator River National Wildlife Refuge 13518 Milltail Road, East Lake, NC 27953
SITE VISIT QUESTIONS AND ANSWERS – JULY 25, 2024
1. How deep is the canal [Point Peter Road location]? Not sure, but don’t think it is deeper than 10 feet.
Clarification: Canals have roughly 6-7 feet of water and then a lot of muck at the bottom.
2. Are we supposed to put in the posts [for the debris catch structure]? Yes
3. How far apart and how many posts? The Performance Work Statement (PWS) has posts 5 feet apart so I would budget for 7 posts at each location though that could be less once we start actually putting the posts in.
4. How do you want the posts put in – pounded in, jetted in? Method to put them in is up to you, they just need to be able to stay in place.
5. How deep do you want the posts put in? PWS calls for 20 foot long posts. Vendor volunteered that usually you put the posts in the ground 1/3 of the length and the Government agreed.
6. How often do you clean the structures out? Not often enough but we are targeting at least once a month after the contract is completed. We are hoping the debris curtain will channel the debris to the side where we can rake it out by hand and only have to bring a backhoe or excavator down for big stuff.
7. What type of debris? Tree limbs, grasses, some sediment
8. What equipment should be used to clean out the water control structures? You tell me. The
PWS does not dictate the method. If you anticipate using a coffer dam, we will handle the permits with Army Corps of Engineers and CAMA.
9. If we use a coffer dam, will it be okay to back the water up for a couple of days? Yes, but I would think you would work more than an 8-hour day if you use a coffer dam and you would not do it on a day like today when the water is very high.
10. Is this the fastest that the water flows? Yes, I think so. After the heavy rains we had this morning, the water is really flowing out of the canals.
11. You want a curtain attached to the boom? Yes.
Clarification: The permanent boom should have an overall height of 24-in with 9-10 inches freeboard and 14-15 foot draft. See amended PWS.
12. Should the curtain be permeable? NO.
Clarification: Government said YES at the site visit but after reviewing the desired specifications of the permanent boom, the overall height of the boom will allow enough water movement that the curtain does not need to be permeable.
13. What type of boom and what kind of longevity? Boom should be equivalent to the example boom from Mattamuskeet NWR that was part of the PWS. We want the boom to last for quite awhile.
Clarification: We want a permanent boom. See amended PWS.
140FS324Q0141
File details come from the government source that posted it. Updated .