Expiration date: 10/23/2015
The applicant, Mr. Nathan Hill, Lake and Peninsula Borough's, stated purpose is to construct a public dock facility in Chignik.
PROPOSED WORK: The applicant proposes to discharge 49,000 cubic yards (cy) of fill material, stockpiled gravel and riprap, into 1.6 acre of Anchorage Bay to faciliate construction of a 315 foot long sheetpile dock and associated facililties, inlcuding fender systems, mooring and breasting dolphins, catwalk, and staging and access areas. As provided by the applicant, proposesd work includes:
• Remove and salvage the existing Class B armor rock along the existing fill area, where the proposed dock would be constructed;
• Construct a bulkhead dock structure by driving 935 sheet piles, backfilling with the existing material stockpiled on-site. Material would be stabilized using vibracompaction;
• Reconfiguration of salvaged Class B rock, addition of new Class A rock at Sections A, B and C, (refer to sheet 8 of 9). Section A includes placement of 800 cy of Class B rock and 1400 cy of Class A rock along two areas with a combined length of 230-ft and 40-50-ft width. Section B includes placement of 4900 cy of Class A rock within an area 520-ft in length and 40 -50-ft in width. Section C includes placement of 1800 cy of Class A rock within an area 470-ft in length by 15-40-ft in width. At Sections B and C, additional Class B rock would be placed; however, this activity would occur above the high tide
line, thus outside our regulatory jurisdiction;
• Install breasting dophin, mooring dolphin, linked with a catwalk. Each dophin would be supported by four 30-inch diameter steel piles, (install eight 30-inch steel piles);
• Install five fender systems along the dock face and one fender system on the breasting dolphin, each with two steel pin piles, (install twelve 30-inch diameter steel piles);
• All 30-inch diameter steel piles would be driven with a vibratory hammer, as practicable; an impact hammer would only be utilized if necessary.
• The applicant is requesting Special Condition 2C be removed from the original permit and from this modification, hould the work be authorized. Special Condition 2C prohibits in-water work between July 30 and September 10, to protect returning salmon (adults). The applicant has indicated that all pile driving would occur during daytime hours to ensure a minimum 12 hour period of time (overnight) when fish may pass through the area, minimzing disturbance.
All work would be performed in accordance with the enclosed plan (sheets 1-9), dated July 2015, and August, 2015.
Comments on the described work, with the reference number, should reach this office no later than the expiration date of this Public Notice to become part of the record and be considered in the decision. Please contact Michael Setering at (907) 753-2627 or by email at Michael.firstname.lastname@example.org if further information is desired concerning this notice.