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Federal Register / Vol. 86, No. 148 / Thursday, August 5, 2021 / Rules and Regulations
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mi gravel road from the Oliktok Dock to the staging padrequiring approximately 30,811 cubic m 40,300
yd of gravel and resulting in an increase in footprint of the gravel road by <0.4 ha <0.1 ac. Twelve culverts are estimated to be extended within this part of the gravel road to accommodate the additional thickness approximately five culverts per mile. This would yield a new gravel footprint with an additional 2 ha 5.0 ac and 90,752 cubic m 118,700 cubic yd. In 2025, a 6.1-ha 15-ac ice pad, for camp placement, and an ice road for module transportation, would be constructed in association with the Willow Project. The planned location is near Drill Site 2P, over 32.2
km 20 mi away from the coastline.
An increase in road traffic to Kuparuk is expected to begin in 2023 and continue into the summer of 2026.
Activities would mostly consist of the transportation of freight, equipment, and support crews between Oliktok Point, the Kuparuk Airport, and the NPRA. The number of weekly flights will also increase with an average of 6
additional weekly flights in 2023, 4
additional flights per week in 2024, 14
additional flights per week in 2025, and 4 additional flights per week in 2026.
Eight barges would deliver the prefabricated modules and bulk material to Oliktok Dock using existing and regularly used marine transportation routes in the summer of 2024 and 2026.
Due to the current depths of water at the Oliktok Dock 2.4 m 8 ft, lightering barges barges that transfer cargo between vessels to reduce a vessels draft would be used to support the delivery of large modules to the Dock. The location of the lightering transfer would be approximately 3.7 km 2.3 mi north of Oliktok Dock in 3.05
m 10 ft of water. Screeding operations would occur during the summer openwater season 20222024 and 2026
starting mid-July and take approximately one week to complete.
The activities would impact an area of 3.9 ha 9.6 ac and an additional hectare 2.5 ac in front of the Oliktok Dock to facilitate the unloading of the lightering barges. Bathymetry measurements would be taken after to confirm the appropriate conditions of the screeded seafloor surface.
Milne Point Unit The Milne Point Unit is located 56 km 35 mi northwest of Prudhoe Bay, producing from three main pools, including Kuparuk, Schrader Bluff, and Sag River. The total development area of Milne Point is 182 ha 450 ac, including 80 ha 198 ac of 14 gravel pads, 54 km 33 mi of gravel roads and
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mines, 161 km 100 mi of pipelines, and over 330 wells.
Milne Points facilities are connected by gravel roads and are accessible by the Dalton Highway year-round via a variety of vehicles pickup trucks, vacuum trucks, loaders, box vans, excavators, hot water trucks. Required equipment and supplies are brought in first from Anchorage and Fairbanks, through Deadhorse, and then into the Milne Point Unit. Arterial roads between processing facilities and camps experience heavy traffic use.
Conversely, drill site access routes experience much less traffic, with standard visits to drill sites occurring twice daily within a 24-hour period.
Traffic at drill sites increases during drilling activities, maintenance, or other related projects and tends to subside during normal operations. Industry uses a variety of vehicles on these roads, including light passenger trucks, heavy tractor-trailer trucks, heavy equipment, and very large drill rigs.
Air travel via helicopter from an established pad N70.453268, W149.447530 to Deadhorse Airport is necessary only if the access bridges are washed out typically mid to late May to the start of June. During such instances, approximately 2030 crew flights would occur, along with cargo flights, about once a week. Hilcorp also performs maternal polar bear den surveys via aircraft.
Hilcorp uses off-road vehicles Rolligons and Tuckers for tundra travel during summer months to access any pipelines and power poles not found adjacent to the gravel roads.
During the winter seasons, temporary ice roads and ice pads are built as needed across the Unit to move heavy equipment to areas otherwise inaccessible. Hilcorp also uses their offroad vehicles Tuckers, snow machines, and Argo centaurs during the winter to perform maintenance and inspections.
Additionally, road vehicles pickup trucks, vacuum trucks, loaders, box vans, excavators, and hot water trucks are used to perform pipeline inspections, culvert work, pigging, ground surveillance, VSM leveling, reconnaissance routes snow machine trails, potential spill response exercises, and geotechnical investigations.
There are 14 pads and 2 gravel mine sites within the Milne Point Unit.
Twenty-eight new wells are expected to be drilled over the next 7 years. Repair activities are routine at Milne Point and occur on pipelines, culverts, ice roads, and pads. Hilcorp also has plans to continue development on Milne Point and will be running two to three more
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drilling rigs over the next 5 years requiring several pad expansions to support them. Hilcorp plans to expand six pads, including: S Pad 4.5 ha 11
ac, I Pad 0.81 ha 2 ac, L Pad 0.81
ha 2 ac, Moose Pad 0.81 ha 2 ac, B Pad 2.1 ha 5.3 ac, and E Pad 0.4
ha 1 ac. Additionally, Hillcorps proposed Raven Pad is projected to be built in 2021 between the L and F Pads.
This pad will be 12.1 ha 30 ac and contain various facilities, pipelines, tieins, a new pipeline/VSM along existing routes connecting F Pad to CFP and 45
wells.
Hilcorp is also planning to drill at least 28 new wells with a potential for more over the period of the ITR. New facilities will be installed for polymer injections, flowlines for new wells, pipelines, camps, tanks, and main facility improvements. This will require the development of new gravel pits for mining. Some of the new facilities planned to be built include: Upgrades to Moose pad; F Pad Polymer facility installation and startup; 2020 shutdown for A-Train process vessel inspections and upgrades; LM2500 turbine overhaul completion; Raven Pad design and civil work; S Pad facility future expansion; S
Pad polymer engineering and procurement; diesel to slop oil tank conversion; and I Pad redevelopment.
Repair activities will be routinely performed on pipelines, culverts, ice roads, and pads. Power generation and infrastructure at L Pad and polymer injection facilities are also planned on Moose Pad, F Pad, J Pad, and L Pad.
Hilcorp plans to expand the size of the Milne mine site up to 9 ha 22.37
ac. Approximately 6.3 ha 15.15 ac will be mined for gravel. Overburden store will require about 1 ha 2.5 ac and will be surrounded by a 1.3-ha 3.4-ac buffer. Around 0.5 ha 1.32 ac will be used to expand the Dalton Highway.
The Ugnu Mine Site E, located approximately 8 km 5 mi southeast of Oliktok Point and 3.2 km 2 mi south of Simpson Lagoon, will also be expanded during the 20212026 ITR.
Hilcorps planned expansion for the new cell is approximately 259 m long by 274 m wide 850 ft long by 900 ft wide or 7.1 ha 17.56 ac. This would produce an estimated 434,267 cubic m 568,000
cubic yd of overburden including a 20
percent swell factor, and approximately 764,554 cubic m 1,000,000 cubic yd of gravel. The footprint of the Phase I
Material Site is expected to be 6.5 ha 16
ac. Overburden storage, a thermal barrier, and access road would require approximately 4.2 ha 10.3 ac. The final site layout will be dependent on gravel needs.

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