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APPENDIX A MAINTENANCE STANDARDS FOR PRIVATFI.Y MAIM'A]NID DRAINAGE FACILITIES <br /> Nf). 10-CONVEYANCE SYSTEMS(PIPES&DffCHES) <br /> —� Maintenanc= �elect Conditions When Maintenance is Needed Resulta Expected When <br /> Component Maintenance Is Performed <br /> � Pipes Sediment&Debris Accumuialed sedimeM Uiat exceeds 20%of tha Pipe cleaned of all sediment <br /> diameter o�the pipe. and debris. <br /> Vegetation Vegetadon that reduces free movemenl ol water All vegetation remived so water <br /> Ihrough pipes. Ilows lreely fhrough pipes. <br /> Damaged Prolective rnating is damaged;rust is causing Pipe repaired or replaced. <br /> more ihan SOq de�erioralion to any part of pipe. <br /> My dent Ihat decreases the cross section area of Pipe repaired cr replaced. <br /> pipe by more ihan 20%. <br /> Open Ditches Trash 8 Debris Trazh and debris exceeds 1 cubic foot per:,000 Trash and dehris cleared from <br /> square feet ol dilch and slopzs. ditches. <br /> Sediment Accumulated sediment that exceeds 20 Y of ihe Ditch cleaned/tlushed ol all <br /> design depth. sediment and debris so that il <br /> matches design. . <br /> Vegetation Vegetation that reduces free movement of water Water Bows freety ttvough <br /> Ihrougn ditches. ditehes. <br /> Erosion Damage to See'Ponds'Slandard No.7 Ser�'�'onds'Standard No.7 <br /> Slopes <br /> Rock Lining Out of Maintenance person can see native soil beneatA Replace rocks to design <br /> Place or Missing(It Ihe rock linirtg. siand•urds. <br /> Applicable). <br /> Catch Basins See'Calch Basins:Standard No.S See"Catch Basins'Standard <br /> No.5 <br /> / J De6ris Barriers See`Debris Barriers'Standard No.6 See`Debris Barriers'S�andard <br /> � (e.g.,Trash Rack) � No.6 <br /> N0. 11 -GROUNDS (LANDSCAPING) <br /> Maintenance Delect Conditions When Mainlenanca is Needed Results Expected When <br /> Component Maintonanee is Performod <br /> Generai � Weeds Weeds growin9 in more than 20Y of the landscaped Weeds presenl in less than 5% <br /> (Nonpoisonous) area(Irees and shruhs only). of the landscaped area. <br /> Salery Hazard My presence of poison ivy or other poisonous No poisonous vegetation <br /> vegetation. presentinlandscaped area. <br /> Trash or Litler Paper,cans,bottles,tolaling more ihan 1 cubic loot Area Gear of litler. <br /> � within a Iandscaped area(trees and shrubs only)ol <br /> 1,000 square fee�. <br /> Trees and Shrubs Damaged Limbs or parts ol�rees or shrubs that are split or Trees and shmbs witb less ihan <br /> broken which aHect more than 25 h of lhe total 5%of total(oliage with split or <br /> foliage of ihe treo or shrub. broken limbs. <br /> � Trees or shr�bs Ihat have been biown down or Tree or shrub in place iree of <br /> knaked over, injury. <br /> Trees or shrubs which are not adequately supported Tree or shfub in place and <br /> or are ieaning over,causing exposure ol the roots. adequately supported;remove <br /> any dead o:diseased Vees. <br /> 1998 Sudacc Wa�cr Design Manual 9���9$ <br /> n-9 3� <br />