Oxidation Pond liner purchase and install question and answers.pdf
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- Attached to
- Oxidation Pond liner install Federal contract opportunity
- Solicitation number
- W9123825Q0005
About this file
This is a Questions and Answers document for solicitation W9123825Q0005 from the US Army Corps of Engineers Sacramento District regarding an oxidation pond liner purchase and installation project.
The Q&A addresses several technical requirements and clarifications: (1) Sand usage as an underlay liner material must be approved by the California Regional Water Quality Control Board, with proper materials including concrete, clay, gravel, and rock; (2) The 10-year warranty requirement for the underlay liner depends on CRWQCB approval of sand material; (3) Liner installation must meet all manufacturer specifications though a specific compaction report is not required; (4) No open trenches are permitted overnight during installation; (5) As this is a new oxidation pond, contractors must obtain all applicable permits prior to starting work; (6) No cost estimate is being released; and (7) The start date shown in the solicitation is tentative and will be updated upon award. Questions were due by March 13, 2025 at 11:00 PM PST.
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Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| Oxidation Pond Photos.pdf | ||
| Solicitation KO Approved.pdf |
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W9123825Q0005 - Oxidation Pond liner purchase and install question and answers
1. Underlay Liner Material Confirmation Per PWS Section 3.3(C), the specifications state that a new underlay liner is required.
Please confirm whether sand is an acceptable material for this purpose.
Note: We have successfully implemented this method on previous reservoir projects for the same intended function.
1A. PWS paragraph 3.3(b) Excavate lagoon and grade level. Reshape and compact the pond subgrade and bank slopes with proper materials i.e., concrete, clay, gravel, rock as required by the California Regional Water Quality Control Board (CRWQCB).
2. Warranty Requirements for Underlay Liner PWS Sections 3.9 and 3.10 specify a 10-year warranty requirement for the underlay liner.
If sand is determined to be an acceptable material per RFI #1, would this section require modification to reflect the change in material?
2A. PWS paragraph 3.3(b) If sand is allowed by the CRWQCB.
3. Testing and Certification Requirements PWS Section 3.11, Testing Item B, requires certification that the evaporative pond can support the new covering. Please clarify whether USACE requires a compaction report verifying that the liner installation meets the manufacturer's specifications, in addition to the QA testing outlined in Section 3.11.
3A. Compaction report is not mentioned, it is essential to verify that the liner installation meets all manufacturers specifications.
4. Anchor Trench Installation Requirements PWS Section 3.17 states that contractors shall not leave open trenches overnight. Please confirm whether the anchor trench may remain open during installation, provided that the work area is secured, and proper safety measures are implemented to restrict access.
4A. PWS paragraph 3.17 states Contractor shall not leave any open trench
5. Permitting and Coordination PWS Sections 3.15 and 3.19 reference required permitting. Please provide all current permits and/or operating permits applicable to the project so that contractors can coordinate with the necessary agencies and ensure compliance with all listed requirements.
W9123825Q0005 - Oxidation Pond liner purchase and install question and answers
5A. This is a new oxidation pond – there are no current permits. PWS paragraph 3.19 Contractor shall pull all applicable permits prior to the start of on-site work
6. Is there a cost estimate, budget or ballpark figure for the project listed?
6A. There is no Cost Estimate or Service Cost Range for this project that we can release.
7. Is there an actual start date for the project?
7A. Yes, the tentative start date is displayed in the solicitation. This will change once the requirement is awarded.
File details come from the government source that posted it. Updated .