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I <br /> I <br /> ' NO.6-CONVEYANCE PIPES AND DITCHES <br /> Maintenance Defect or Problem Conditions When Maintenance Is Needed Results Expected When <br /> Component Maintenance Is Performed <br /> Pipes Sediment&debns Accumulated sediment or debris that exceeds Water flows freely through pipes. <br /> accumulation 20%of the diameter of the pipe. <br /> Vegetation/roots Vegetation/roots that reduce free movement of Water flows freely through pipes. <br /> water through pipes. <br /> Contaminants and Any evidence of contaminants or pollution such Materials removed and disposed of <br /> pollution as oil,gasoline,concrete slurries or paint. according to applicable regulations. <br /> Source control BMPs implemented if <br /> appropriate. No contaminants <br /> present other than a surface oil film. <br /> Damage to protective Protective coating is damaged;rust or corrosion Pipe repaired or replaced. <br /> coating or corrosion is weakening the structural integrity of any part of <br /> Any <br /> e. <br /> Damaged Any dent that decreases the cross section area of Pipe repaired or replaced. <br /> pipe by more than 20%or is determined to have <br /> weakened structural integrity of the pipe. <br /> Ditches Trash and debns Trash and debns exceeds 1 cubic foot per 1,000 Trash and debris cleared from <br /> square feel of ditch and slopes. ditches. <br /> Sediment accumulation Accumulated sediment that exceeds 20%of the Ditch cleaned/flushed of all sediment <br /> design depth. and debris so that it matches design. <br /> Noxious weeds Any noxious or nuisance vegetation which may Noxious and nuisance vegetation <br /> constitute a hazard to County personnel or the removed according to applicable <br /> public. regulations. No danger of noxious <br /> vegetation where County personnel <br /> or the public might normally be. <br /> Contaminants and Any evidence of contaminants or pollution such Materials removed and disposed of <br /> pollution as oil,gasoline,concrete slurries or paint. according to applicable regulations. <br /> Source control BMPs implemented if <br /> I appropriate. No contaminants <br /> present other than a surface oil film. <br /> Vegetation Vegetation that reduces free movement of water Water flows freely through ditches. <br /> through ditches. <br /> Erosion damage to Any erosion observed on a ditch slope Slopes are not eroding. <br /> slopes --- <br /> Rock lining out of One layer or less of rock exists above native soil Replace rocks to design standards. <br /> place or missing(If area 5 square feet or more,any exposed native <br /> Applicable) soil <br /> I <br /> I <br /> I <br /> I <br /> 1 <br /> I <br /> I <br /> I <br /> I <br />