Attachment_J_-_Q_A_-_RFP_140F0222R0015_0001.pdf

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ND-VALLEY CITY WETLAND MANAGEMENT DISTRICT-REHAB T
Solicitation number
140F0222R0015
Issued by

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This document contains questions and answers regarding solicitation number 140F0222R0015 for rehabilitation of the Tomahawk Dam located at the Valley City Wetland Management District. The solicitation involves using approved fill, crush and run gravel, and crystalline waterproofing additive in cast-in-place concrete as specified in the contract documents. A bid schedule will be provided to contractors to match the 21 separate bid items outlined in the measurement and payment specifications, rather than requiring a lump sum bid. No soil investigation reports were performed for the project site, but the materials comprising the dam and approach channel are described as varying degrees of sand, silt, and clay, with no known bedrock.

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RFP 140F0222R0015

Questions and Answers

Q1. Please supple specifications for the “ Impervious Fill “ called out in the construction drawings.

A1. This is the same as the “Approved Fill” for the project. The soil parameters for approved fill can be found in Section 2.02 APPROVED FILL – on page 02330-4 of the Specifications

Q2. Please supply the specifications for the “ Gravel Access Road “ Material.

A2. Please use Crush and Run or “Item 4” gravel for access road material.

Q3. Please supply specifications for “ Approved Fill “ for the Earthen Dam and Road area additions, supply clarification of the fill requirement boundaries south of the concrete dam structure, 0+00 to 3+75.

A3. The soil parameters for approved fill can be found in Section 2.02 APPROVED FILL – on page 02330-4 of the Specifications

Q4. Sheet C6, detail B/C5 is showing Topsoil Seed, Sheets C2 and C4 are showing Riprap. Please clarify.

A4. Please install rip rap in accordance with Sheets C2 and C4.

Q5. Please confirm that all cast-in-place concrete contains Crystalline Waterproofing Additive as called out, Specification Division 3, 03300, C, 1-3.

A5. Yes, please use Crystalline Waterproofing Additive as directed in Section 03300 PART 2, 2.01

MATERIALS, pg 03300-6 of the Specifications.

Q6. Section 01200 – Measurement and Payment – details 21 separate bids items. However, Continuation Page 3 of the Solicitation shows one LS bid item for the entire bid proposal. Will FWS be providing a bid schedule to match the Measure & Payment specification or will this be bid as a LS job?

A6. A bid schedule will be added as an attachment to the solicitation.

Q7. Are there any soil investigation reports available for review?

A7. The material making up the dam and in the location of the approach channel for the new culvert are composed predominantly of varying degrees of sands, silts and clays. There is no known presence of bedrock within the construction limits of the proposed project.

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