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III. SEDINIENT ; Yes No B 'L'IPS <br /> Drainage Structures: <br /> 8 ) . Are culverts with functional riser/sinker boards installed B 1 <br /> on appropriate lateral and side ditch connections ? <br /> 9 ) . Are the culvert structures properly installed and maintained ? B 1 <br /> Ditch Infrastructure <br /> 10) . Are there settling basins or sumps to trap sediment at field ditch :1 :1 B2 <br /> connections to laterals and other main canals prior to discharge ? <br /> 11 ) . Are these basins maintained at an appropriate frequency ? `1 B2 <br /> 12) . Are ditches and canals constructed with proper side 17 B3 <br /> bank stabilization methods ; i . e . sloping or shoring ? <br /> Ditch Afanagement: <br /> 13 ) . Is vegetative cover maintained near canal or ditch banks ? L El B4 , B5 <br /> 14) . Are there vegetative buffer strips maintained near environmentally = = B4 <br /> sensitive lands ? <br /> 15 ) . Are measures taken to prevent side-bank erosion due to the flow ❑ ❑ B8 <br /> of water directly down the sides of the banks (i . e . berms) ? <br /> 16) . Are riprap, concrete headwalls, sandbags, or wingwalls 0 :1 B9 <br /> used to protect canal banks from erosion? <br /> Bed/Furroiv Ma►zagemernt: <br /> 17) . Are water furrows properly shaped and grassed to prevent erosion, ❑ D BIO 1 -4 <br /> rutting, and other problems that may result in excess sediment <br /> transport off- site ? <br /> 18 ) . Is a narrow herbicide band maintained with a width appropriate ❑ 17 B11 <br /> for the size of the trees? <br /> 19 ) . Are vegetated water furrows , drain tiles, and settling basins used D L B10 - 14 <br /> to insure minimum movement of sediment to off- site water bodies ? <br /> Construction Activities: <br /> 20 ) . Are measures taken to prevent erosion ( sediment loss) during Cl L7 B10 , 15 <br /> earth-working activities (i . e . , hay bales or ribbon turbidity barriers) ? <br />