140P8525Q0005_Attachment_6_Questions_and_Answers_0004.pdf
PDF 12 MB Posted
- Attached to
- YOSE-SECONDARY CLARIFIER FRAMEWORK
- Solicitation number
- 140P8525Q0005
About this file
This is a Questions and Answers document with detailed engineering drawings for solicitation 140P8525Q0005 regarding the replacement of a secondary clarifier framework at the El Portal Wastewater Treatment Plant for Yosemite National Park.
The Q&A clarifies several technical specifications: Tnemec N-69 Epoxy is approved for hi-build epoxy coating; the bridge is welded rather than bolted; rake arm dimensions are H 3'6" x L 17'6" x D 3' x 9" 2/16 with drive cage dimensions of H 12'4" x W 4'5" x D 5'5". The project will reuse the center column but requires new skimming mechanism and Scum/RAS box. Tank coating has been removed from the scope. No new piping is required for the suction pipe clarifier, and old equipment will not be coated. A site visit is scheduled for February 27, 2025 at 10:00am at 5083 Foresta Road, El Portal, CA 95318, with RSVP required. The bid deadline has been extended to March 10, 2025 at 1200 PST. The document includes multiple technical drawings showing plan views, elevations, and detailed component specifications for the clarifier framework.
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140P8525Q0005 Questions and Answers (Version 3 : 3/3/2025)
Is there any Available prints on this clarifier? Yes see below.
is there going to be a site visit to view the clarifier? A site visit may be organized by contacting Katie Bablitch, Sean Bittle, and Brian Roppolo at katie_bablitch@nps.gov sean_bittle@nps.gov, and brian_roppolo@nps.gov .
Will N-69 Epoxy be okay for the hi build epoxy? Brand is Tnemec? Yes.
Is the bridge bolted together? at the 4 way or is it welded? Welded.
What are the measurements for the rake arm supports? Rake arm Dimensions are: H 3' 6" x L 17' 6" x D 3' x 9" 2/16 (x2 per side of drive Cage) which are attached to drive cage that supports them.
Dimensions of drive Cage: H 12'4" (top of RAS Box) x W 4' 5" x Depth 5' 5"
Are we also coating the old equipment? No.
Is coating of the tank still a project scope of work or was that removed in the updated SOW?
It was removed, no coating the tank is required.
Would the park consider extending out this bid an additional week to allow more suppliers to review the project for proper quotations?
Yes, the solicitation will be extended until 3/10/2025 at 1200 PST. An organized site visit will be held on Thursday 2/27/2025 10:00am. Please RSVP with brian_roppolo@nps.gov, and katie_bablitch@nps.gov.
The location of the site visit is listed below:
5083 Foresta Road, El Portal, CA 95318. El Portal Wastewater Treatment Plant.
Will you be reusing the center column or replacing it? It’s not clear in the spec.
YES
The spec calls out a suction header, however it’s a suction pipe clarifier. Are we providing new piping ?
No new piping for suction pipe.
Are we replacing the skimming mechanism and skimming device?
Yes, new skimming mechanism
Are we reusing the scum box?
Replacing Scum/RAS box mailto:katie_bablitch@nps.gov mailto:sean_bittle@nps.gov mailto:brian_roppolo@nps.gov
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| 20240328_134147 |
| 20240328_140825 |
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File details come from the government source that posted it. Updated .