rfp-des-2026-19-addendum.pdf

Murphy Dam Outlet Works Improvements Project, Pittsburg, NH

ADDENDUM NO. 1

To: All Prospective Bidders Murphy Dam Outlet Works Improvements Project

Location: Pittsburg, NH

From: Charlie Krautmann – NHDES Dam Bureau Josh Paquet – GFT

Re: Addendum No. 1

Date: May 8th, 2026

Please find the following ADDENDUM NO. 1 for the Murphy Dam Outlet Works Improvements Project which is to be included as part of the Contract Documents thereof.

As per Specification Section 00200, Article 13.09 the bid shall contain an acknowledgment of receipt of this Addendum No. 1, (and all addenda). The addendum number and date shall be entered in the space provided in Section 00301 – Bid Form, Article 3 – 3.01A

Please note bids are due Friday, June 19th, 2026 at 1300 (EST). Hard copy bids must be received as stipulated in the Contract Documents.

This Addendum has been issued to address clarifications in the Contract Specifications, Permits as well as notification to prospective bidders for the required prebid sitewalk on Wednesday, May 20th, 2026:

Item #1: May 20th, 2026 Required Prebid Sitewalk – Sub-Basement

NHDES will provide access to the sub-basement provided that all prospective bidders bring a chest or full-body harness appropriate for confined space entry. A davit arm will be available at the basement level to facilitate climbing down the ladder for sub-basement inspection.

Item #2: May 20th, 2026 Required Prebid Sitewalk – Outlet Works Concrete Stilling Basin

NHDES will shut off water through the penstock the day prior to the site walk to allow bidders to climb down a ladder into the concrete stilling basin and, if desired, inspect the two existing Dow valves. Due to expected leakage, the use of chest waders is strongly recommended.

At the conclusion of the site walk, the broom gate will be opened to allow bidders to observe normal flow conditions through the penstock.

Item #3: Section 00301 – Bid Form Article 5 Basis of Bid - Bid Item 01200-8g, Seeding and Restoration

A total of 0.5 acres is to be restored with seeding. The seed mix shall consist of the following, or approved equivalents, based on the USDA NRCS guidance document (A Guide to Conservation Plantings on Critical Areas for the Northeast):

1. 5a

2. 5b

3. 7

Item #4: Section 00200 – Instruction to Bidders, Article 15 – Submittal of Bid, 15.01 B. Proposed Schedule for Project Completion; and Section 00301 – Bid Form, Article 7 – Attachments to this Bid,

7.01 F. Proposed Schedule for Project Completion

Prospective bidders are required to provide a proposed project completion schedule as part of the bid package, in accordance with Section 00840 – Special Conditions, Schedule and Sequence, Part 1 – General. In particular, bidders should ensure that their proposed schedules align with the specified periods during which the broome gate may be closed - between October 1 and January 1, and April 1 and June 1 - assuming all other conditions outlined in this Section and the Contract Document are satisfied.

Item #5: Refer to Attachment A for the NHDES Shoreland Permit-By-Notification 2026-01072 which satisfies Section 00860 – Special Conditions – Permits and Approvals, Part 1 – General 1.01.

https://www.nrcs.usda.gov/plantmaterials/nypmspu11417.pdf https://www.nrcs.usda.gov/plantmaterials/nypmspu11417.pdf

Attachment A

NHDES Shoreland Permit-By-Notification 2026-01072

The State of New Hampshire

Department of Environmental Services

Robert R. Scott, Commissioner www.des.nh.gov 29 Hazen Drive • PO Box 95 • Concord, NH 03302-0095

(603) 271-3503 • Fax: (603) 271-2867 • TDD Access: Relay NH 1-800-735-2964

SHORELAND PERMIT-BY-NOTIFICATION 2026-01072

NOTE CONDITIONS

PERMITTEE: NHDES DAM BUREAU

CHARLES S KRAUTMANN

PO BOX 95 29 HAZEN DR

CONCORD NH 03301

PROJECT LOCATION: MURPHY DAM RD, PITTSBURG

TAX MAP # B3, LOT # 30-1

WATERBODY: Connecticut River

APPROVAL DATE: MAY 05, 2026 EXPIRATION DATE: MAY 05, 2031

Shoreland Permit by Notification 2026-01072 has been accepted as complete in accordance with RSA 483-B:5-b, I, (a).

The New Hampshire Department of Environmental Services (NHDES) hereby issues this Shoreland Permit by Notification, with conditions pursuant to RSA 483-B:6, II that work may proceed pursuant to RSA 483-B:5-b, I, (a). The conduct of regulated activities other than those shown in the accepted Permit by Notification will invalidate this notice.

DESCRIPTION OF APPROVED IMPACT:

Impact 13,440 square feet of protected shoreland in order to provide access for construction at the Murphy Dam outlet works building and construct a concrete platform.

THE FOLLOWING STANDARD PROJECT CONDITIONS SHALL BE MET PURSUANT TO ENV-WQ 1406.20:

1. Erosion and siltation control measures shall be installed prior to the start of work, be maintained throughout the project, and remain in place until all disturbed surfaces are stabilized.

2. Erosion and siltation controls shall be appropriate to the size and nature of the project and to the physical characteristics of the site, including slope, soil type, vegetative cover, and proximity to wetlands or surface waters.

3. No person undertaking any activity in the protected shoreland shall cause or contribute to, or allow the activity to cause or contribute to, any violations of the surface water quality standards established in Env-Wq 1700, and the requirements in Env-Wq 1404.01(a) and(b).

4. Any fill used shall be clean sand, gravel, rock, or other suitable material.

5. For any project where mechanized equipment will be used, orange construction fence shall be installed prior to the start of work at the limits of the temporary impact area as shown on the accepted plans; be maintained throughout the project; and remain in place until all mechanized equipment has been removed from the site.

ANY INDIVIDUAL CONDUCTING WORK UNDER THIS PERMIT IS ADVISED OF THE FOLLOWING:

1. During construction, a copy of this permit should be posted on site in a prominent location visible to inspecting personnel.

2. This permit does not convey a property right, nor authorize any injury to property of others, nor invasion of rights of others.

3. Pursuant to Env-Wq 1406.21, transfer of this permit to a new owner requires notification to, and approval of, NHDES.

4. This permit does not absolve the permittee from due diligence in regard to state, local or federal laws regarding exemplary natural communities or protected species. This permit does not authorize in any way the take of

File # 2026-01072 May 5, 2026 threatened or endangered species, as defined by RSA 212-A:2, or of any protected species or exemplary natural communities, as defined in RSA 217-A:3.

APPROVED:

Clara G. Cooper Permitting Specialist, Shoreland Program Wetlands Bureau, Land Resources Management Water Division

THIS PERMIT IS NOT VALID UNTIL SIGNED BY THE PARTIES BELOW (Env-Wq 1406.21(c))

PERMITTEE SIGNATURE (required) PRINCIPAL CONTRACTOR SIGNATURE (required, if any)