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I V-4.6 Maintenance Standards for Drainage Facilities I The facility-specific maintenance standards contained in this section are intended to be I conditions for determining if maintenance actions are required as identified through inspection. They are not intended to be measures of the facility's required condition at all times between inspections. In other words, exceedence of these conditions at any time between inspections and/or maintenance does not automatically constitute a violation of these standards. However, based upon inspection observations, the inspection and I. maintenance schedules shall be adjusted to minimize the length of time that a facility is in a condition that requires a maintenance action. Table V-4.5.2(1) Maintenance Standards - Detention Ponds I Maintenance Conditions When Results Expected When Component Defect Maintenance Is Maintenance Is Per- 1 Needed formed Any trash and debris I which exceed 1 cubic feet per 1,000 square feet. In general, there I should be no visual Trash & Debris evidence of dumping. Trash and debris cleared from site If less than threshold all trash and debris will be removed as part of next scheduled main- tenance. Any poisonous or nuis- General ance vegetation which No danger of poisonous may constitute a haz- vegetation where main- and to maintenance per-tenance personnel or the sonnel or the public. public might normally be. Poisonous Veget-Any evidence of nox- (Coordinate with local I ation and noxious ious weeds as defined health department) weeds by State or local reg- Complete eradication of ulations. noxious weeds may not (Apply requirements of be possible. Compliance adopted IPM policies with State or local erad- for the use of herb- ication policies required irides). I Contaminants Any evidence of oil, No contaminants or pol- I 2014 Stormwater Management Manual for Western Washington Volume V- Chapter 4-Page 829