Impervious Surfaces. Impervious surfaces are permanent, nonseasonal rooftops and concrete and asphalt surfaces. Impervious surfaces include residential buildings, agricultural buildings (with and without flooring), and paved areas both within and outside the protected property’s building envelopes. Impervious surfaces may not exceed 2 percent of the total acreage of the protected property. Conservation practices listed in the Field Office Technical Guide are exempt from the impervious cover limitation.
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Samples: directives.sc.egov.usda.gov, directives.sc.egov.usda.gov, directives.sc.egov.usda.gov
