Pre-Bid Meeting Notes W911KB 21-B-0001.pdf

W911KB21B0001

NOM014

2021-2023 Nome Harbor Maintenance Dredging Nome, Alaska Pre-Bid Teleconference 17-Nov-2020 10am Alaska Time

Dial-In Number 1-844-800-2712 Access Code 199 404 4774

Agenda Topics for Plans/Specs

a. General Overview of Maintenance Dredging

i. Location: Nome is located in northwest Alaska along Norton Sound.

ii. Harbor Description: Nome Harbor includes an entrance channel approximately

4,200 feet long with varying width. The outer entrance channel is dredged to -22 feet mean lower low water (MLLW). The channel then transitions to -12 feet MLLW in the inner entrance channel. The harbor approach channel and inner harbor are maintained to a depth of -10 feet MLLW. The east sediment trap, located adjacent to the Nome causeway bridge, is dredged to -22 feet MLLW.

iii. Equipment: No equipment is specified for this contract. Historically, a cutterhead suction pipeline dredge has been used. The Contractor shall select equipment appropriately capable of dredging and restrict placement of dredging equipment to only that required to accomplish the work.

iv. Dredge Material: Long-shore transport, storm driven waves, and riverine sediment contribute to shoaling of the project. Materials to be dredged include, but are not limited to, silt, sand, gravel, cobbles, boulders, and miscellaneous man-made debris. It is the Contractor’s responsibility to remove and properly dispose of any such miscellaneous debris at no additional cost to the Government.

However, obstructions shown on sheet C-102 of the drawings are not required to be removed in this contract.

v. Work Areas: Maintenance dredging is divided into work areas for three contract line items (CLINs) each dredge season. Dredging in the inner harbor, harbor approach channel, inner entrance channel, and transition are grouped under one CLIN with an estimated 24,000 cubic yards (CY) per dredge season. See the bid schedule for sub-divided items AA (12,000 CY) and AB (12,000 CY). There are also optional CLINs for maintenance dredging the outer entrance channel with an estimated quantity of 20,000 CY per dredge season and the east sediment trap with an estimated quantity of 25,000 CY per dredge season. See the bid schedule for the sub-divided items. Also, see the “BID/CLIN SCHEDULE NOTES”.

vi. Construction Schedule: Reference clause 52.211-10, Section 01 57 20.01 29, and Section 31 09 13.00 29. The timing of the dredge start date at Nome is dependent on ice out of the harbor and completion of the pre-dredge survey. Ice out of the harbor has been observed as early as May. An environmental fish window requires in-water maintenance dredging to be complete by June 30th each dredge season for the harbor approach channel and inner harbor. Dredging of the base items shall be complete by July 31st, 2021. If the optional items for the outer entrance channel and/or east sediment trap are exercised, then dredging shall be complete by August 31st, 2021. Optional items for maintenance dredging in 2022 and 2023 follow a similar schedule each season.

b. Fuel for Dredge Equipment

i. CLINs: Line items in the bid schedule for fuel shall not be used to pay for mobilization, demobilization, or any support equipment such as survey vessels or land-based equipment as described in Section 01 22 00.00 10.

ii. Estimated Fuel Consumption: Following contract award the Contracting Officer shall be provided with an estimated fuel consumption rate (gallons/cubic yard) for the dredge per Section 01 19 40.00 29.

iii. Measurement/Payment: The Contractor shall provide dated fuel receipts/invoices to the Contracting Officer and promptly notify the Government when 85% of the not to exceed fuel cost for dredging has been reached. Payment shall be made less the computed fuel cost associated with material dredged below/outside the dredge prism. Reference note #2 in the “BID/CLIN SCHEDULE NOTES” as well as Section 01 22 00.00 10.

c. Surveys

i. Pre-dredge, interim condition (if exercised), and post-dredge surveys shall be the basis of payment for the dredged quantity as described in Section 01 22 00.00 10 and conducted by an independent surveyor meeting the requirements of Section 31 09 13.00 29.

ii. Pre-dredge survey(s) shall be completed and approved before maintenance dredging begins each season per clause 52.211-10.

iii. Daily soundings as described in Section 31 09 13.00 29 are not required to be performed by an independent surveyor.

iv. Post-dredge survey(s) indicating that required depth was achieved shall be completed as described in Section 31 09 13.00 29 prior to demobilization. If required depths were not achieved in the post-dredge survey(s), then the Contractor shall remove required material and re-survey using their independent surveyor at no additional cost to the Government.

d. Changes from Previous Contract*

i. The survey limits adjacent to the causeway docks were simplified. Upland surveying of the docks is not required but bathymetric data between each dock is to be collected.

ii. The approximately 200-foot seaward extension of the outer entrance channel was carried forward into this 3-year solicitation.

iii. Several special environmental requirements have been added to mitigate impacts to marine mammals. This includes, but is not limited to, the establishment of an exclusion (i.e. shutdown) zone, use of dedicated protected species observers, and marine mammal reporting requirements.

*Note: This is not a complete list of all changes compared to the 2018-2020 contract for maintenance dredging at Nome Harbor. Interested firms should thoroughly review the drawings and specifications as contained in this solicitation for work in 2021-2023.