Addendum No 2 (11.15.24).pdf

11/15/2024

ADDENDUM #2

to

BID NO. B24-09

North Landfill Cell 1 Construction

The following shall become as fully a part of the above-named drawings, specifications, and bid documents as if therein written and shall take full and complete precedence over anything therein contained to the contrary.

Acknowledgment: Each bidder MUST indicate on the Bid Form their acknowledgment of this addendum or their bid will be rejected.

Each bidder shall be responsible for reading each item of this addendum to ascertain to what extent and in what manner it affects the work to be performed.

The following information is available online at Rocky Mountain e-Purchasing at https://www.bidnetdirect.com/colorado/larimer-county/ under this project:

1. Addendum No. 1: I. 1st Set of Questions & Responses

II. Revisions

2. Communication No 1: Pre-Bid Attendance List

Pre-Bid Presentation

3. Addendum No. 2: I. 2nd Set of Questions & Responses

II. Additional Information Enclosures: Excavation / Soil Data / Base Liner Earthwork Pre-Bid Presentation Slide

I. 2nd Set of Questions & Responses:

Question #01: What is the approximate timeline/start date for liner installation?

Response #01: The timeline and start date for liner installation will be dependent on the timeframe for completion of Milestones #1 and #2 and availability of geosynthetics installer crew and suitable weather conditions.

Question #02: How early could the site take delivery of liner materials for storage?

Response #02: After product storage and handling has been approved by the Design

Engineer/Owner in accordance with Section 01 66 00 of the Project Manual.

https://www.bidnetdirect.com/colorado/larimer-county/

Question #03: After review of the project plans, I have the following question related to the HDPE Liner , GCL, and Geocomposite supply and installation bid item quantities:

Drawing C403 shows a dashed line around the perimeter of the cell labeled in the legend as “Edge of Liner”. Termination details shown on sheet C601 show both “Edge of Waste” and “Coordinate Boundary / Edge of Liner” lines.

Which line correlates with the dashed line shown on Drawing C403 in relation to bid item quantities, surveyed for measurement and payment?

Based on the bid item quantities it appears the dashed line shown on drawing C403 should be labeled as “Edge of Waste Boundary”, not “Edge of Liner”. Please either confirm or adjust the bid item quantities as needed.

Response #03: The dashed line labeled "Edge of Liner" on the plan view sheets is representative of the edge of liner system based on the permitted cell area and corresponds with the control points required on Sheet C402. The edge of liner sign on detail 2/C601 is a physical sign to be posted at the edge of the anchor trench. The edge of waste reference is for the County/CDPHE only.

The details (2/C601, 3/C601, and 4/C601) demonstrate the anchoring and tie-in methods for the liner, which do go beyond the permitted lined cell area. The area provided in the bid schedule includes the vendor recommended 10% additional area for slopes, trenching/tie-ins, corners, etc. The area provided for the geosynthetic materials is sufficiently conservative for the total lined area. Bid on the quantity provided in the bid schedule. We will work with the manufacturer/award vendor to determine the final area of materials to order.

Question #04: Does Article 8.01 A.12 in the EJCDC C-520 agreement apply for this contract?

Response #04: Yes. This project is classified as a public works project, and under state statute §8-17-101, at least 80% of the work must be performed by Colorado labor. For more details on the Keep Jobs in Colorado Act, please visit, https://cdle.colorado.gov/workplace-conditions/keep-jobs-in-colorado-act.

II. Additional Information:

a. Excavation / Soil Data / Base Liner Earthwork:

33,000 CY of material imbalance – may be obtained from onsite (no import), see enclosed slide from the pre-bid presentation for further details.

Any further questions must be received in writing no later than 4:00 PM (MT) on 11/18/2024.

Christal Bateman Purchasing Agent https://cdle.colorado.gov/workplace-conditions/keep-jobs-in-colorado-act https://cdle.colorado.gov/workplace-conditions/keep-jobs-in-colorado-act

• Geotechnical Soils Report – Included as Attachment B of Bid Package

• Clearing & Grubbing Minimal

• Topsoil Stripping & Stockpiling for Redistribution

• Excavation of 792,000 CY of Materials

• Largely can be handled as cut-to-fill for structural elements (735,000 CY)

• Section 31 23 00 - Earthwork

• Install Prepared Subgrade Layer (33,300 CY)

• Section 31 38 10

• Install Protective Cover Layer (33,300 CY)

• Section 31 38 30

• 3’ Working Pad (23,400 CY)

• Sheet C405

Excavation / Soil Data / Base Liner Earthwork

33,000 CY of material imbalance – may be obtained from onsite (no import)

Total Fill:

90,000 CY