1500 1ST ST RAIL BARGE FACILITY 2018-01-01 MF Import

i , I , 1 Timber Pile Removal 2 The timber piling shall be removed using a vibratory extractor as the preferred i 3 method. Piles shall be removed with a force that is coaxial with the vertical axis of 4 the pile. Piles shall be removed one at a time. Concurrent multiple pile removal is 5 not allowed, unless done in different locations with different equipment. Pile � 6 removal using force which is not coincident with the vertical axis of the pile, is not 7 allowed unless the pile breaks within 4 feet of the mudline. 8 � 9 Piling that break below the mudlirn; or are already broken below the mudiine may be 10 left in place. In those circumstances where it is not possible to extract piling either 11 with a vibratory hammer, crane or clamshell, the piling shall be cut off below the � 12 mudline. The clamshell operation shall cause minimum disturbance to the 13 sediments. ' 14 15 Debris shall be contained during all removal operations and disposed offsite. This ! 16 containment shall be done under the provisions o( the approved Demolition Plan � 17 noted above. 18 � 19 Control Methods 20 Containment Boom: An oil containment boom shall be employed during all in water 21 piling removal activities. The boom shall encircle the areas where piling are being t 22 removed as well as the barge. This boom shall also serve to collect any floating i 23 debris. Oil absorbent materials shall be employed if visible product is observed. 24 The booms shall remain in place until all oily material and floating debris has been r 25 collected and the sheens have dissipated. i 26 27 Absortrent Pads: The Contractor shall maintain a supply of oil absorbent pads on � 28 the barge to be employed if visible contamination, beyond routine sheens as 29 determined by the Engineer, is observed. 30 31 Debris Netting: Debris netting shali be available and immediately used to collect � 32 and remove floating material or debris during all demolition and removal activities. � 33 34 Piling, broken stubs, and associated sediments (if any) shall be contained on a � 35 barge or in an upland area above Mean Higher High Water. The storage area shall 36 include of a row of hay or straw bales, or filter fabric, placed around the perimeter to 37 allow for dewatering o( the sediments and run-ofi from piles. The arrangement of � 38 the containment area shall meet the approval of the Engineer. y 39 40 Waste materials shall not be cast upon adjacent waters or beaches. ' 41 � 42 Remova/of Obstructions 43 Additional work may be required to remove a�y rock or other obstruction larger than � 44 12 inches in diameter buried 10 feet or more below the mudline as directed by the 45 Engineer. 46 � � 1� Port ol Everett FAWAT-03-039 Satellite RaillBarge Transfer Facillly Final Port Review Dratt i Phasc 1:Pier Construction 40 15 Mzrch 2005 �