Questions_and_Answers_during_Advertisement_11-23-16.pdf

Questions and Answers during Advertisement for CO FLAP 209(1), Cottonwood Pass

November 9, 2016

Q1 – Bid Item 60501—000 Standard Underdrain System; Plans sheets 525-A, Note 5 specifies to supply all materials per Subsection 706.08. Per 706.08, all materials are for gaskets for Concrete Pipe. Please specify the pipe for this work.

A1 – The Note 5 should refer to Subsection 708.04 of the PF 14. It appears the Standard Drawing was not updated from the FP03.

Q2 – Special Conditions; Section 602- Culverts and Drains; 602.03 states “ Excavate and backfill according to Section 209 using lean concrete backfill”. We would like to seek clarification on:

a) Is this required for all 24 Inch diameter and 36 Inch diameter pipe culverts?

b) Should you require this, please provide the mix details, like strength and material specifications for “lean concrete backfill.”

A2 –

a) Yes, lean concrete will be required as backfill on all culvert pipes to prevent leakage and subsequent frost heave of culverts.

b) See Section 614 of the FP 14 for requirements of lean concrete backfill.

November 23, 2016

Q3- Will contractors be able to draw water from the Lake for this project?

A3- The only construction water locations are noted in section 105 of the SCR’s. Any other sources are the responsibility of the contractor.

Q4- Can the 14,600 Cy of waste material be placed in the quarry area?

A4- Excess material could be incorporated into the Contractor’s remediation and restoration plan or for obliteration site’s or other on-site locations as approved by the CO.

Q5- Please verify the Outlet pipe detail provided under Standard underdrain system 605-A.

Do all these outlet pipes need to be backfilled with lean concrete backfill.

A5- No they do not require lean backfill. See section 605 of the FP-14

Q6- Would tree clearing be allowed in advance of the project start date?

A6- Contractors should assume no on-site work will be done prior to April 1 per 108.01 (it is pretty clear). The Government will consider value engineering proposals from the selected firm, if they have a plan to start sooner.