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EPA Moisture Control Guide 2013

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www.epa.gov/iaq/moisture Vegetated swales are to be inspected four times each year and after every storm that exceeds 0.5 inches of rainfall. If swale vegetation consists of fast-growing grasses, the swales are to be inspected weekly. Whenever possible, swales are to be inspected before a major storm. Inspection consists of looking for debris, evidence of clogging and observable vegetation growth. Vegetated swale maintenance consists of removing debris and sediment, maintaining the vegetation and ensuring the swale drains within 48 hours. Building:___________________________________________________________________________________________ Address:___________________________________________________________________________________________ Swale ID/Location:__________________________________________________________________________________ Inspected by:__________________________________________________ Date:_________________________________ ID – Number to be used to identify problem on site sketch G – Good, no action needed F – Fair, monitor condition periodically, plan necessary repairs P – Poor, immediate action needed N/A – Not applicable ID G F P N/A REMARKS Pea gravel diaphragm cleanliness 1 Grass or other vegetation requires mowing Trash/debris in inflow forebay 2 Erosion problems 4 Vegetation requires replacement 5 3 Swale does not drain within 48 6 hours – requires rototilling or cultivating Bottom sediment built up to 25 7 percent of original design volume – requires sediment removal Other problems 8 Vegetated Swale Inspection/Maintenance Sketch F-4

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