Addendum 3.pdf

COMMONWEALTH OF KENTUCKY

KENTUCKY DEPARTMENT OF FISH AND WILDLIFE RESOURCES

INVITATION TO BID NO: FW-003-25

FOR: FILO - Rolling Fork WMA Stream & Wetland Stillwell Branch Stream Restoration Project Larue, Kentucky

DATE: January 8, 2025

RFB 660 2500000262

ADDENDUM NO. 3

BIDDER SHALL CONFORM TO THE FOLLOWING CHANGES AS SAME SHALL BECOME BINDING

UPON THE CONTRACT TO BE ISSUED IN RESPONSE TO THIS INVITATION TO BID.

Item 1: Responses to questions below:

1. What is the total acreage that will need to be surveyed and treated for invasive species management prior to construction?

All streams listed on sheet 94 require invasive species management within a minimum of 100 feet from the top of the finished (proposed) bank (total approximate acreage =204.51 acres).

This excludes areas with existing populations that may be outside of these areas that require treatment and have been identified on the plans.

2. Can we use an alternative to the galvanized wire for tree protection?

Any alternatives must be approved by the Engineer and Owner. Plastic alternatives will not be considered.

• Does the total earthwork estimate include all of the low permeability soil zones? – no.

• Can the hand construction activity continue during the April 1 – June 30 black-out dates? We anticipate that if hand construction activities are conducted with adequate care and protection of the existing streambed and banks, along with thoughtful site access, etc., they should not result in the delivery of sediment to the Rolling Fork River. However, it is the contractor’s responsibility to ensure that any work performed during the April 1 – June 30 does not deliver sediment to the Rolling Fork River.

• If improvements are made to internal access roads within the WMA to move materials throughout the site, can they be left in place upon completion?

1. The construction access paths that are prescribed on Sheets 3 and 112 of the plans are all outside of the SPI and align with the existing trails that the WMA wants to maintain after the project. Improvements to facilitate access in these areas that are consistent with the specifications, notes, and grades on the plans and are acceptable to the Engineer and Owner can remain after construction.

2. Any construction access within the proposed grading zones shall be restored to meet the proposed grades, planting requirements and associated warranties, etc.

3. Any access within the WMA property that is outside of the proposed grading zones shall be restored to an equal or better condition prior to construction, and shall meet planting and invasive requirements and associated warranties, etc.

• Can you confirm whether the wooden structures have been designed to withstand the same storm event or return interval for which we are being asked to provide a warranty? If so, could you provide the specific design criteria, including the event magnitude (e.g., 10-year, 50-year, 100-year storm) and any relevant engineering specifications or standards used?

• Burial dimensions, cut length, and diameter of the wood structures within the equipment limit zones have been designed to resist floating and dislodgement at the

100-yr discharge per the Colorado State University Large Wood Tool, provided they are installed with proper backfill and compaction, associated rock protection, successful establishment of protective vegetative cover to resist bank and floodplain erosion, etc.

• The single exception within the equipment limit zones is within the “rock/log channel,” which has limited valley width available for log burial. Warranty in the “rock/log channel” zone will be judged based on rock displacement and associated erosion as opposed to the potential floating of any of the placed logs.

• Warranty of the brush bed and channel spanning log jams in the hand work zones is not associated with a specific design storm. Warranty of the hand work is dependent upon adherence to the construction plans, details, and specifications. Occasional floating of some of the brush or smaller cross logs may be acceptable during the warranty period;

however, systematic mobility of entire sections of brushbed, including dislodgement and floating of key members during the warranty period would require correction. For reference, the demonstration installation of brushbed in reach A2 on sheet 16 has been stable since installation on June 15, 2021, including during Hurricane Helene, which delivered rainfall to the site September 27-29, 2024, with NWS radar-observed rainfall of 4.5 to 6.25 inches over 72 hours, 4-5.5 inches over 48 hours and 3-4 inches over 24 hours, which coincides with a ~5 to 25-yr rainfall depth for the Bluegrass region according to Bulletin 71.

• With regard to black-out dates, is the period 2nd weekend in April through the 1st weekend in

May (for Statewide turkey season) preventing work on weekends only? These blackout dates preclude work on both weekends and weekdays.

END OF ADDENDUM

Kyla Satterly Kentucky Department of Fish and Wildlife Resource