20 Jul 2021

POA-1993-00713, Cook Inlet_PN (Ammended)

Expiration date: 8/4/2021

Ms. Anna Dugan, with Hilcorp Alaska, LLC., states the purpose of the project is to construct additional natural gas pipelines to provide system safeguards, reduce maintenance requirements, and increase reliability of the system to meet gas needs. Work being proposed, temporarily discharge up to 20,139 cubic yards (CY) of material excavated from 3.125 acres of wetlands into no more than 3.236 acres of wetlands adjacent to the Cook Inlet, a navigable water of the U.S., and to discharge the same material, plus 405.5 CY of contained sand, back into the location from which it came in order to construct two additional pipelines between existing gas wells. One 20-inch medium pressure pipeline and one 24-inch low pressure pipeline would be constructed within a 5,600-foot long trench adjacent to two existing pipelines. The trench would transit 5,220 linear feet of wetlands and would generally be 8 feet wide at the base and up to 26 feet wide at the top due to the nature of wetland soil and engineering requirements. Ten connections points, each 20 feet long and spaced every 500 feet along the pipeline route, would require the trench to be 10 feet wide at the base and up to 28 feet wide at the top to allow sufficient space for safe worker access for welding and connecting of pipeline sections. All work would be performed in accordance with the enclosed project overview, sheets 1-4, dated August 28, 2020, and the project plans (sheets 1-16), dated April 8, 2021. Construction would take place during August/September 2021 or the following winter. The following aspects of the project do not require a DA permit but are listed here for a more complete description of the project. In upland areas, the trench width would be 8 feet at the base and approximately 12 feet wide at the top. Up to 5.5 acres of temporary rig mats would be utilized for temporary equipment staging along the pipeline route. The project site is located within the Kenai Gas Field (KGF) between Pad 34-31 at Latitude 60.474849º N., Longitude 151.273019º W and Pad 14-06 at Latitude 60.459213º N., Longitude 151.2644289º W.; between mile posts 10 and 11, Kalifornsky Beach Road, near Kenai, Alaska. Please contact Mr. Ben Polley at (907) 753-2627 or by email at: Benjamin.L.Polley@usace.army.mil if further information is desired concerning this notice.

12 Jul 2021

POA-2021-00145, Sukkwan Straight_PN

Expiration date: 8/11/2021

The City of Hydaburg, states the purpose of the project is to provide safe sewage treatment and disposal system. Work being proposed, dredging of 3,000 cubic yards (CY) of fill material in 0.31 acres below Mean High Water (MHW), blasting of 500 CY of rock within an area of 0.10 acres below MHW, and discharge of 2,732 CY of fill material into 0.31 acres below the High Tide Line (HTL) for the construction of four (4) 10-foot diameter sewage settling tanks (two 25,000 gallon and two 22,000 gallon tanks), an effluent pump station, and associated appurtenances. The proposed work also involves the discharge of 1,733 CY of fill material within an area of 0.32 acres below HTL for construction of a 14-foot-high by 30-foot-wide temporary berm which will be in place for approximately 6-weeks. All work would be performed in accordance with the enclosed plan (sheets 1-7), dated May 2021. The project site is located within Section 12, T. 77 S., R. 83 E., Copper River Meridian; Latitude 55.205º N., Longitude 132.8277º W.; near Hydaburg, Alaska. Please contact Andrew Gregory at (907) 753-2791, toll free from within Alaska at (800) 478-2712, by fax at (907) 753-5567, or by email at: Andrew.W.Gregory@usace.army.mil if further information is desired concerning this notice.

2 Jul 2021

POA-2003-00764, Passage Canal_PN

Expiration date: 8/2/2021

Mr. Scott Korbe, with the City of Whittier, states the project purpose is to improve access to federal and state lands, alleviate pressure on Whittier’s regional transportation system, and realize potential economic growth. Specifically, the project is focused on providing access to federal and state coastal lands and uplands along Passage Canal, on Trinity Point, and within Prince William Sound; and provide access to City land for recreation and development. Work being proposed, project would result in the permanent discharge of up to approximately 74,000 cubic yards (CY) of fill material into approximately 12.9-acres of wetland and the discharge of up to approximately 1,010 CY of fill material into approximately 1.09-acres of streambed below the ordinary high-water mark. Additionally, the proposed project would result in temporary impacts of up to approximately 220 CY of fill material into approximately 0.13-acre of wetland and streams. The applicant proposes to extend the existing Shotgun Cove Road approximately 2.5-miles from its current terminus (mile 2.0) onto U.S. Forest Service (USFS) land at Trinity Point (mile 4.5), which includes, the construction of nine (9) new parking areas, eight (8) new spur/access roads, and minor safety improvements to two (2) portions of existing trail. The new main road and spur roads would be composed of a layer of shot rock overlain by 20-inches of Type A selected material and 6-inches of grade E-1 aggregate surface course. The new main road would have two (2) 10-foot wide gravel travel lanes and 5-foot wide gravel shoulders on each side. The spur roads would have two (2) 9-foot wide gravel travel lanes. The new parking areas would have capacities ranging from 8 to 50 cars and would be composed of a 16-inch shot rock gravel pad, overlain by 20 inches of type A selected material, and topped by 6 inches of grade E-1 aggregate surface course. Trail safety improvements would be conducted along two (2) areas of the existing Emerald Cove Trail near proposed parking areas and would consist of adding a 12-inch layer of selected material over the trail while widening the trail to a width of 4-feet. Due to the steep grade within portions of the project corridor, rock cut blasting and subgrade blasting techniques would be utilized. Blasted rock material would be collected and used for embankments and roadway structural sections. Culverted crossings with rock riprap at the outlet would be installed at major creeks and various small drainage features, including wetlands, along the length of the main road and spur roads. Culvert diameters would range from 36 to 60 inches with larger culverts being installed at major crossings. Four (4) major crossings were identified along the project corridor (i.e. Station 184+50, Station 186+50, east of Station 197+00, & west of Station 197+00) which would require the installation to culverts designed for resident fish passage. A 60-inch diameter round corrugated metal pipe (CMP) culvert would be used at Stations 184+50 and 186+50, a 20-foot wide single radius arch culvert would be installed west of Station 197+00, and a 9-foot wide single radius arch culvert would be installed east of Station 197+00. The project is estimated to commence in Spring 2022 and may take 5-10 construction seasons (i.e. years) to complete; not necessarily consecutive. All work would be performed in accordance with the enclosed plan (Figures 1-45), dated June 2021. The project site is located within Sections 3, 8, 9, & 17, T. 8N, R. 5E, at approximately Latitude 60.797732º N., Longitude 148.596515º W; in Whittier, Alaska. From the Whittier Tunnel (Anton Anderson Memorial Tunnel), continue onto W Camp Rd towards Whittier. Turn right onto Whittier Street. Continue onto Blackstone Rd. Turn right onto Shotgun Cove Road. Project begins at existing Shotgun Cove Road terminus (mile 2.0). Please contact Daniel Delgado at (907) 753-2586, toll free from within Alaska at (800) 478-2712, by fax at (907) 753-5567, or by email at: Daniel.I.Delgado@usace.army.mil if further information is desired concerning this notice.