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3.3.6 Pipeline Corrosion Protection <br />The pipelines will be protected from rust and corrosion by the FBE coating on the <br />pipes (see Section 2.2). The corrosion allowance is designed to allow the pipes to <br />last 40 years without significant maintenance, and they should last much longer <br />if properly maintained. <br />3.4 Pipeline Corridor Reclamation <br />The final phase of construction is cleanup and reclamation. The following <br />guidelines are the minimum requirements for the Yankee Gulch Project. <br />Specific requirements and additional details can be found in Attachment 6 - <br />Pipeline Reclamation Plan. <br />Backfilling will be completed using the spoil previously excavated from the <br />trench. Fill will be compacted so that m;n;mal settling will occur in the ditch. <br />As much as possible, the disturbed surface will be restored to the original contour <br />of the land. <br />Reclamation activities will take place entirely within the established <br />construction ROW. Reclamation work may consist of recontouring eroded areas <br />and/or extending waterbars, berms, rock barriers, revegetation, and mulching to <br />provide more thorough and complete control of existing and potential erosion. <br />i To prevent the introduction of noxious weeds into the disturbed azeas, <br />reclamation equipment, including seeding equipment, will be thoroughly <br />cleaned before entering the project area. <br />3.4.1 Erosion Control <br />American Soda will identify existing eroded areas during the initial ROW <br />centerline survey. With the approval of the BLM or other landowner, American <br />Soda will correct erosion problems on the existing ROW after backfilling the <br />pipeline and during cleanup and subsequent revegetation/soil stabilization. <br />Proposed erosion control methods may include: <br />• Channel Stabilization: )•n smaller intermittent channels, gabion (wire <br />baskets filled with large cobbles and rocks) would be placed downstream of <br />the channel to slow scour action and trap sediment. In lazger channels, a <br />downstream gabion structure would be installed, the eroded azea <br />backfilled, and another gabion structure placed upstream of the backfilled <br />azea to slow scour action and trap sediment. <br />• Diversion Structures: At some locations, waterbars {earthen dams) would <br />be placed above the washout area to trap sediment and divert water away <br />from the incised channel. Areas of exposed pipe would be backfilled and <br />Pipdur Plm of Development 2$ <br />Yankee Gulch Sodium Minaak Pmject <br />Ameximn Soda. LLP. <br />