20250401 CCLF Ph2 C7 Addendum No. 1.pdf

1667 Cole Blvd., Bldg. 19, Suite 260 Lakewood, Colorado 80401

Re: Addendum No. 1 Phase 2 Cell 7 Construction Chaffee County Landfill Salida, Colorado

This Addendum shall be part of the Contract Documents for the Phase 2 Cell 7 Construction Projects at Chaffee County Landfill in Salida, Colorado. Please acknowledge receipt of this Addendum in your proposal.

Pre-Bid Meeting Agenda An optional pre-bid meeting was held virtually via MS Teams on March 31, 2025. A copy of the agenda prepared for the meeting is included as an attachment to this addendum.

Pre-Bid Meeting Minutes Minutes were prepared for the March 31, 2025, pre-bid meeting. The minutes are provided as an attachment to this addendum.

As a reminder, the bid question period ends on April 1, 2025, at 5:00 PM MDT, and bids are due on April 7, 2025, at 5:00 PM MDT. Please send any questions via email to Shannon Wilcox (swilcox@chaffeecounty.org) and Vittoria Zucchelli (vzucchelli@sanbornhead.com).

Very truly yours, SANBORN, HEAD & ASSOCIATES, INC.

Vittoria E. Zucchelli, E.I.T.

Project Manager

VEZ/MCM: vez

Encl. March 31, 2025 Pre-Bid Meeting Agenda March 31, 2025 Pre-Bid Meeting Minutes cc: Don Reimer (Chaffee County) Beth Helmke (Chaffee County) Shannon Wilcox (Chaffee County) Timothy Reed (Sanborn Head) Marcel Kozlowski (Sanborn Head)

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To: BIDDERS April 1, 2025 File No. 6164.00 mailto:swilcox@chaffeecounty.org mailto:vzucchelli@sanbornhead.com

Pre-Bid Meeting Agenda Phase 2 Cell 7 Construction

Chaffee County Landfill March 31, 2025

1. Introductions

Owner’s Representative – Shannon Wilcox, Operations Manager Chaffee County Landfill 104 Crestone Ave.

Salida, CO 81201 phone: 303.229.8085 email: swilcox@chaffeecounty.org

Design Engineer – Timothy Reed, P.E., CPESC – Vice President

Sanborn, Head & Associates, Inc.

1667 Cole Blvd., Building 19, Suite 260 Lakewood, CO 80401 phone: 603.415.6107 email: treed@sanbornhead.com

CQA Project Manager – Vittoria Zucchelli, E.I.T. – Project Manager

Sanborn, Head & Associates, Inc.

1667 Cole Blvd., Building 19, Suite 260 Lakewood, CO 80401 phone: 720.574.1344 email: vzucchelli@sanbornhead.com

All questions from bidders are to be directed to Shannon Wilcox and Vittoria Zucchelli in writing by email. All questions will be answered in writing and distributed to all bidders.

2. Project Summary

a. Introduction to site (main office, active areas, access roads, scale, staging area, etc.)

b. Operations currently active in Phase 2 Cell 6.

c. Phase 2 Cell 7 is an upgradient cell from Phase 2 Cell 6 and will not require construction of a leachate sump.

d. This bid is only for the geosynthetic purchase, shipment, and/or installation.

Additionally, the contractor is responsible for the cost to ship samples of the geosynthetics to the CQA laboratory for interface shear testing. The lab costs will be paid by the CQA consultant.

e. Chaffee County is completing all the earthwork for this project.

f. All surveying will be coordinated and paid for by Chaffee County using their selected surveyor.

mailto:swilcox@chaffeecounty.org mailto:treed@sanbornhead.com mailto:vzucchelli@sanbornhead.com

Milestone Date Pre-bid Meeting March 31, 2025 End of Bid Question Period April 1, 2025, 5:00 PM MDT Answers Posted April 3, 2025, 5 PM MDT Bids Due April 7, 2025, 5:00 PM MDT RFP Review and Evaluation/Interviews April 8, 2025 through April 14, 2025 Recommendation to Commissioners April 15, 2025 Negotiation of Proposal & Award of Contract April 21, 2025 Notice to Proceed April 22, 2025 Substantial Completion August 1, 2025

3. Major Components of Project

• Owner-Completed Items o All earthwork activities will be completed by the owner which includes:

Preparing the subgrade for the cell, road, and stormwater ditches;

Anchor trench excavation and backfilling;

Excavation of Cell 2 and Cell 6 liner tie-ins;

Drainage sand placement; and Protective cover soil placement.

o The only geosynthetic that the County will install is the geotextile.

o Chaffee County will offload all geosynthetic materials that are delivered to the site.

• Mobilization/demobilization o Contractor staging area o Site cleanup

• Geosynthetic Clay Liner (GCL) o Purchase, shipment, and installation.

o GCL must be delivered dry and the wrapping undamaged. Hydrated or damaged GCL will be rejected.

• Geomembrane o Purchase, shipment, and installation.

• Geotextile o Purchase and shipment only.

o Chaffee County will install the geotextile.

• Anchor Trench – west side of Cell 7 o Specifics for the anchor trench can be found in detail 3 on sheet 6.

o Contractor is responsible for coordinating with Chaffee County for the backfill of the anchor trench once the necessary geosynthetic materials are installed in the anchor trench by the contractor.

• Liner Termination – north side of Cell 7 o Side Slope Condition

Western end of north side o Floor Condition

Eastern end of north side o Contractor is responsible for the purchase and installation of the plywood for both the side slope and floor conditions per detail 4 on sheet 6.

• Cell 2 Liner Connection – south side of Cell 7 o Contractor is responsible for installing the geosynthetic material per detail 5 on sheet 6.

o Contractor is responsible for coordinating with Chaffee County for the backfill of the anchor trench once the necessary geosynthetic materials are installed in the anchor trench by the contractor.

• Cell 6 Liner Connection – east side of Cell 7 o Contractor is responsible for completing all the necessary geosynthetic connections/overlaps required per detail 6 on sheet 6.

• Turf Reinforcement Mat (TRM) o Purchase, shipment, and installation.

o Installation of the material must follow details 3-6 on sheet 7.

o Shall be LANDLOK 450 or an engineer-approved alternative that meets the same requirements.

o Installation of the culvert associated with the TRM will be supplied and installed by Chaffee County

4. Bid Documents

a. The Bid Documents consist of the Contract Documents and Drawings. PDF files were sent to bidders via the BidNetDirect.com Platform. An Excel version of the Bid Form (Schedule of Values) and AutoCAD files can be sent to bidders upon request.

b. Instructions to Bidders

• Project overview

• Bidder responsibilities

• Execution Plan

• Submittal organization and format

c. Scope/Schedule/Price

• Attachment 1 – Schedule of Values (Bid Form) & Bid Item Definitions

• Attachment 2 – Project Schedule – To be prepared by the bidder

• Attachment 3 – Equipment – To be prepared by the bidder

• Attachment 4 – Proposed Key Personnel – To be prepared by the bidder

• Attachment 5 – List of Subcontractors/Suppliers – To be prepared by the bidder

d. Contract Agreement

• This is the standard contract agreement the County uses. Should the contractor wish to propose changes, please include a markup of the standard contract in your bid.

e. Construction Drawings

f. Technical Specifications

g. Construction Quality Assurance Plan

5. General Items

a. Hours of operation/when work may take place

b. Communications (CB radio, cell phones)

c. Designated areas for parking, equipment, and staging

d. Contractor shall take care not to damage existing monitoring wells, gas probes, and other site features. Any damage caused by the Contractor shall be promptly repaired at the Contractor’s expense.

e. Weekly meetings

f. Water source

6. Site Tour

• Should a contractor wish to visit the site prior to the bid submission deadline, please coordinate with Shannon Wilcox.

7. Bidder Questions

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6164.00

MEMORANDUM

To: Bidders From: Vittoria Zucchelli, E.I.T.

File: 6164.00 Date: April 1, 2025 Re: March 31, 2025, Pre-Bid Meeting

Chaffee County Landfill Phase 2 Cell 7 Construction

A pre-bid meeting for the Chaffee County Landfill Phase 2 Cell 7 Construction project was held at 2:00 P.M. MST on March 31, 2025, via Microsoft Teams. Sanborn, Head & Associates, Inc.

(Sanborn Head) prepared these meeting minutes to document the information discussed during the meeting.

MEETING ATTENDEES

NAME COMPANY TELEPHONE E-MAIL

Don Reimer Chaffee County 719.530.5560 dreimer@chaffeecounty.org Shannon Wilcox Chaffee County 303.229.8085 swilcox@chaffeecounty.org Vittoria Zucchelli Sanborn, Head & Associates, Inc. 720.574.1344 vzucchelli@sanbornhead.com Timothy Reed Sanborn, Head & Associates, Inc. 603.415.6107 treed@sanbornhead.com Marcel Kozlowski Sanborn, Head & Associates, Inc. 720.574.1337 mkozlowski@sanbornhead.com Vamshi G Texas Environmental Plastics, Ltd. 281.821.7320 EXT. 305 vamshi@tepinc.net Barrett Sawatzky Patriot Environmental Liners 405.695.1422 barrett@peliners.com Daniel Barber Patriot Environmental Liners 405.788.0428 daniel@peliners.com Chris Fore EC Applications 714.888.3830 cfore@ecapplications.com Ric Lopez EC Applications 714.921.9848 rlopez@ecapplications.com

Robert Cimarolli Mustang Extreme Environmental Services

412.334.4936 rcimarolli@mustangextreme.com

The following items were discussed:

1. Introductions were made for the Owner and Design Engineer. The Chaffee County project manager is Shannon Wilcox. The project design was led by Timothy Reed with Sanborn, Head & Associates, Inc. (Sanborn Head). Vittoria Zucchelli with Sanborn Head is the project manager for the design and Construction Quality Assurance (CQA) and lead the Pre-Bid Meeting.

The project was introduced, which included a presentation of the site using the Overall Site Plan (Sheet 2) within the Construction Drawings. Key areas of interest for the project were identified, such as the entrance to the site, offices, active areas, location of the project site, etc.

mailto:daniel@peliners.com mailto:cfore@ecapplications.com mailto:rlopez@ecapplications.com mailto:rcimarolli@mustangextreme.com

April 1, 2025 Chaffee County Landfill Phase 2 Cell 7 Pre-Bid Meeting Minutes

6164.00

2. A summary of the project scope was reviewed. The bid is specific to geosynthetic purchase, shipment, and/or installation. Chaffee County will perform all earthwork and surveying for the project.

3. The project schedule was reviewed and is provided below:

Milestone Date Pre-bid Meeting March 31, 2025 End of Bid Question Period April 1, 2025, 5:00 PM MDT Answers Posted April 3, 2025, 5:00 PM MDT Bids Due April 7, 2025, 5:00 PM MDT RFP Review and Evaluation/Interviews April 8, 2025, through April 14, 2025 Recommendation to Commissioners April 15, 2025 Negotiation of Proposal & Award of Contract April 21, 2025 Notice to Proceed April 22, 2025 Substantial Completion August 1, 2025

4. A question was asked about the start date for the geosynthetics installation. The subgrade preparation should be completed by the end of April. Geosynthetics installation will begin no sooner than May after interface shear testing is completed. An earlier timeline will be an important evaluation criterion for the County.

5. Major components of the project were discussed, including line items on the Schedule of Values (Bid Form) and the general requirements for each. The bullets of the requirements discussed can be found in the Pre-Bid Meeting Agenda or additional details can be found in the Bid Item Definitions and/or in the Technical Specifications.

Below are some questions that were asked during this section of the meeting:

• A question was asked about the anchor trench line item and what it includes. The contractor should include any additional equipment or labor associated with installation of the geosynthetics in the anchor trench, such as coordination with the County. The County will perform the excavation and backfilling of the anchor trench.

• A similar question was asked about the liner tie-ins. Chaffee County will be responsible for excavation and backfill of the tie-in locations. For Phase 1 Cell 2, Chaffee County will be responsible for excavation and backfilling of the anchor trench. For Phase 2 Cell 6, the County will excavate to expose the existing liner system and place the sand, geotextile, and protective cover over the completed connection. The Contractor will be responsible for cleaning off the geosynthetics and installing the GCL and geomembrane.

• Another question was asked about the quantities of material to be ordered. To compare the bids fairly, the bidders should bid the quantities provided in the Schedule of Values (bid form) as they are. Once the project is awarded, the selected contractor will provide a panel layout and order quantities to the Engineer prior to ordering to confirm the correct quantities.

April 1, 2025 Chaffee County Landfill Phase 2 Cell 7 Pre-Bid Meeting Minutes

6164.00

6. Sanborn Head reviewed the bid documents, which included going over the structure the bidders should use for preparing their bid. It was also identified to the bidders that if they wish to change the contract in any way, they need to submit a markup of the contract as a part of their bid. It was pointed out that there are notes on Sheet 1 of the Construction Drawing’s that indicates that the County is purchasing geosynthetics. Since the finalization of these drawings the County has reversed that decision, and the bid item definitions should be followed for this bid. Below are some additional questions that were asked during this section of the meeting:

• A contractor asked if a bid bond is required. This project does not require a bid bond.

• A question was asked if the performance and payment (P&P) bond is required to be submitted with the bid or does the cost just need to be included. Only the cost of the bond will be required with the bids. The selected contractor will be required to submit the bond upon contract award.

7. Some general site items were then discussed. Generally, working hours are during daylight. The landfill typically has personnel onsite 6 AM – 4:30 PM, but the contractor can stay later if required. The staging area will be north of Cell 6. CB radios or cell phones are the recommended method of communication. The contractor is responsible for protecting all existing infrastructure, such as monitoring wells and gas probes, and will be responsible for repairing any damage caused during construction. Weekly construction progress meetings will be held at the site, but the number of meetings will depend on the geosynthetics installation schedule, and the exact day will be determined at the pre-construction meeting. It was noted that these construction drawings are under review by CDPHE, and approval is expected to be received by the end of April.

8. The pre-bid meeting concluded at about 2:30 PM.

VEZ/TWR: vez

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