Responses to Questions Received Against 191BWC22R0005.pdf

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Answers Questions Received Against 191BWC22R0005 – Nogales IOI Rehab Phases 4 & 5

1. Can a contractor submit a Bid as a Prime (GC) and also take a subcontractor role to a different Prime ?

Response 1: No

2. Can a subcontractor with over 15% scope of work bid to more than one Prime?

Response 2: Yes

3. Would the project consider a CIPP liner that is an approved equal that meets or exceeds the project specifications but would alter the minimum design thickness? The composite liner (felt/fiberglass) is thinner and stronger and allows more competitive bids due to efficiencies with freight/weight of liner, and better productivity to install.

Response 3: Yes, the project would consider a CIPP liner that is an approved equal that meets or exceeds the project specifications. The Contractor shall be responsible for ensuring that the final design of the liner proposed complies with all specifications and site specific requirements of the project. Also note that all CIPP design documents and calculations including thickness are required to be signed and sealed by an Arizona P.E. per Specification Section 46.04.00 1.9 C.”

4. Is the Inspector required to be on site at all times, or as typical, to be on-site at key times of construction – Post video, Manhole testing, etc? What is the overtime inspection rate?

Response 4: See Solicitation Clause H.10. The Government/Construction Inspector will be onsite full-time (40 hours per week). The Inspector's regular shifts will be arranged based on Contractor's normal working hours or weekly schedule. If the Contractor will work overtime beyond their normally scheduled hours, the Government shall determine if inspection services are required at its sole discretion depending on Contractor activities. If the Inspector is required to be onsite for overtime work, the Contractor shall be responsible for paying the overtime (OT) costs.

The OT rates are not yet finalized. The OT rates per day and per hour are for the Construction Inspector under the Construction Management Contractor to be selected. Examples of past rates on USIBWC projects are listed below per year. . Rates vary per Contract. The actual rates will be provided to the Construction Contractor after award of the CM Contractor.

• 2015 - $166/hr and $1,328/day (8-hrs)

• 2016 - $160/hr and $1,452/day (8-hrs)

• 2017 - $155/hr and $1,239/day (8-hrs)

• 2018 - $171/hr and $1,615/day (8-hrs)

• 2021 - $166/hr and $1,321/day (8-hrs)

5. Are we allowed to work on Phases 4 & 5 simultaneously?

Response 5: Yes

6. Will Owner extend the question deadline?

Response 6: In order to ensure all questions are answered, a second due date of May 27, 2022 has been provided for any additional questions.

7. Sections between manholes on the IOI are very long and are not typical in other areas on sewer mains of this type. This creates problems with maintenance as camera and cleaning equipment

191BWC22R0005 Page 2 of 3 cannot cover these long reaches. Will the contractor be allowed to build a new access in between these long sections? If so, what would be the preferred method of installation?

Response 7: The Contractor will not be allowed to build a new access point within long sections of CIPP. Each segment of CIPP should be one liner, continuous between the existing manholes. If an additional manhole is requested within a long section, the Government would need to evaluate and approve a new manhole. The intent is to not add any new manholes unless absolutely necessary.

The Government would need to consider various factors including location (ROW may require additional permitting), access, depth, and property owner agreements as required. If allowed, the installation method is at the discretion of the Contractor, however, any new manholes must meet the standards included in the Contract drawings and specifications.

8. The project has a defined duration in the RFQ and there is a given amount of unknown time related to permitting and regulatory requirements and non-working time for monsoon moratorium.

All things aside if the permits are acquired and the work can be performed in less than the contract time or at a reduce schedule will that be acceptable?

Response 8: Yes.

9. There is a monsoon moratorium that permanent work cannot be completed due to the risk of I&I and interruption of flows. Can the general contractor work on non-permanent work i.e. (bypass setup, grading work, pioneering and access development, etc.)

Response 9: Yes. Note that the Contractor can work on any portion of the project, even permanent work, outside the Nogales Wash area during monsoon season. During monsoon season, work within the Wash is not allowed for safety reasons. The Contractor should take into account when preparing their schedule that working during the monsoon season may include higher levels of I&I and higher IOI sewage flows.

10. The bid schedule has arbitrary quantities for excavation, pipe repair, and backfill that is not defined on the plan set. If the intent this will be an allowance to make point repairs if found during the construction project? Has there been any viable example that can be provided? The scope of a repair could be significantly different depending on the location, depth, and length.

Response 10: Yes, reference the payment and measurement paragraphs of all applicable sections. There are currently no real examples to provide, and the needs for this work would be handled on a case by case basis. As an example, if a segment of pipe requires repair to perform the CIPP, a point repair would be required that would then be measured and paid for under the applicable CLINS. It is understood the scope of repair could be different based location, depth, and condition, therefore, the Contractor is responsible for reviewing all Contract documents including the provided plan and profiles to estimate and prepare their proposal based on anticipated conditions.

11. Due to the nature of CIPP lining especially on long water cure shots there might be outside the published work hours. Will this be an issue, and will the contractor be responsible for the cost associated with the time in this example?

Response 11: There is no issue with working overtime, it just has to be requested beforehand.

Also see Solicitation Clause H.10.

Yes, the Contractor is responsible for all overtime hours and costs for their own work/employees and for any overtime costs for inspection services associated with this work. See response #2. It is understood that CIPP installation and curing is a continuous process until completed, and so the Government does not expect the Inspector to be onsite at all times during curing.

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12. Due to the bid not being due until the middle to end of June can the question-and-answer time be extended as we have time to develop our submittals there might be questions associated with the document and/or plans?

Response 12: See response #4.