Tom Adams, Matanuska Susitna Borough; stated the purpose is to construct a new sloped haulout ramp for marine barges and other watercraft at Port Mackenzie. The ramp would allow barges to be grounded on a rising tide and then pulled up onto uplands for storage and inspection. The proposed haulout is intended to improve existing infrastructure to increase frequency and diversity of use at the Port, thereby reducing land transportation from other ports; and to serve as a back-up facility in the event of disruption to the Port of Alaska or road or rail supply lines. PROPOSED WORK: The applicant proposes to discharge 10,300 cubic yards of rip rap and 49,300 cubic yards of sand and gravel fill into 2.8 acres of Knik Arm below the high tide line (HTL). Prior to ramp installation, approximately 3,050 cubic yards of riprap and 38,500 cubic yards of soft marine deposits would be excavated from the same 2.8-acre footprint. Excavated riprap would be temporarily stockpiled on the Port uplands and reused to armor the toe of the new ramp, resulting in a net volume of 43,000 cubic yards of fill. Excavated sediments would be disposed of at a nearby upland disposal facility. . Please contact Gwen Jacobson at (907) 347-5802, toll free from within Alaska at (800) 478-2712, or by email at Gwendolyn.A.Jacobson@usace.army.mil if further information is desired concerning this public notice.
POA-1979-00412 Knik Arm PN