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Table V-4.5.2(1) Maintenance Standards - Detention Ponds (continued) 1 <br /> Maintenance Conditions When Results Expected When <br /> Com onent Defect Maintenance Is Maintenance Is Per- <br /> p Needed formed <br /> potential for erosion to <br /> continue. <br /> (Recommend a Goeth- <br /> echnical engineer be 111 <br /> called in to inspect and <br /> evaluate condition and <br /> recommend repair of <br /> condition. <br /> Only one layer of rock j <br /> exists above native soil <br /> in area five square feet <br /> or larger, or any expos- <br /> Emergency Over- Emergency Over- ure of native soil at the Rocks and pad depth are <br /> flow/Spillway flow/Spillway top of out flow path of restored to design stand- <br /> spillway. ards. <br /> (Rip-rap on inside <br /> slopes need not be <br /> replaced.) <br /> Erosion See "Side Slopes of <br /> Pond <br /> Table V-4.5.2(2) Maintenance Standards - Infiltration <br /> 111 <br /> Results Expec- <br /> Maintenance Conditions When Maintenance Is ted When <br /> Defect <br /> Component Needed Maintenance <br /> Is Performed <br /> Trash & Debris See "Detention Ponds" (No. 1). See "Detention <br /> Ponds" (No. 1). <br /> Poisonous/Noxious See "Detention <br /> See "Detention Ponds" (No. 1). <br /> General Vegetation Ponds" (No. 1). <br /> Contaminants and See "Detention <br /> See "Detention Ponds" (No. 1). <br /> Pollution Ponds" (No. 1). <br /> Rodent Holes See "Detention Ponds" (No. 1). See "Detention <br /> Ponds" (No. 1) <br /> Water ponding in infiltration pond Sediment is I <br /> Storage Area Sediment after rainfall ceases and appropriate removed <br /> I <br /> 2014 Stormwater Management Manual for Western Washington <br /> Volume V- Chapter 4-Page 833 <br />