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<br />Conservation License (rev. 12/16) Page 21 of 23 License No. 23-108200 <br />e. The contractor shall provide the location of all the broken and cut piles using a <br />GPS. <br /> <br /> <br />BMP 2. BARGE OPERATIONS, WORK SURFACE, CONTAINMENT <br /> <br />A. Barge grounding will not be permitted. <br /> <br />B. Work surface on barge deck or pier, or upland staging area shall include a containment basin <br />for all treated materials and any sediment removed during pulling. Creosote shall be prevented <br />from re-entering the water. Uncontaminated water run-off can return to the waterway. <br /> <br />1) Containment basin shall be constructed of durable plastic sheeting with continuous <br />sidewalls supported by hay bales, ecology blocks, other non-contaminated materials, or <br />support structure to contain all sediment and creosote. Containment basin shall be lined <br />with oil absorbent boom. <br /> <br />2) Work surface on barge deck and adjacent pier shall be cleaned by disposing of sediment <br />or other residues along with cut off piling as described in BMP #4.B. <br /> <br />3) Containment basin shall be removed and disposed in accordance with BMP #4.B or in <br />another manner complying with applicable federal and state regulations. <br /> <br />4) Upon removal from substrate the pile shall be moved expeditiously from the water into <br />the containment basin. The pile shall not be shaken, hosed-off, left hanging to drip or any <br />other action intended to clean or remove adhering material from the pile. <br /> <br /> <br />BMP 3. DEBRIS CAPTURE IN WATER <br /> <br />A. A floating surface boom shall be installed to capture floating surface debris. The floating <br />boom shall be equipped with absorbent pads to contain any oil sheens. Debris will be collected <br />and disposed of along with cut off piling as described in BMP #4. <br /> <br />B. The boom may be anchored with four or fewer ½ ecology blocks or a similar anchoring device. <br />These anchors must be removed once the project is complete. The anchor system shall be <br />located to avoid damage from vessel props to eelgrass, kelp, and other significant macroalgae <br />species. The line length between the anchor and surface float shall not exceed the water depth <br />as measured at extreme high tide plus a maximum of 20 percent additional line for scope. The <br />buoy system shall include a subsurface float designed to keep the line between the anchor and <br />surface float from contacting the bottom during low tide cycles. The subsurface float shall be <br />located off the bottom a distance equal to 1/3 the line length <br /> <br />C. The boom shall be located at a sufficient distance from all sides of the structure or piles that are <br />being removed to ensure that contaminated materials are captured. The boom shall stay in its <br />Docusign Envelope ID: 9AF27A6B-A801-4DA1-8CF6-CC7F0385775B