§ 52.050 SMALL PROJECT APPLICATION (< 5,000 SQ. FT. OF IMPERVIOUS AREA).

   (A)   This section applies to eligible projects with total impervious surface area from 1,000 square feet to less than 5,000 square feet.

   (B)   If the total impervious surface area is 2,500 square feet to 5,000 square feet the project requires a small project application to be submitted to the borough and volume controls must be installed to meet the requirements of the surface area of BMPs required.

   (C)   For areas where runoff from impervious areas can be directed to pervious areas that allow for infiltration, filtration and increased time of concentration disconnected impervious area (DIA) credits may be used. To qualify as DIA the concentrated discharge must meet the following criteria:

      (1)   For rooftop areas:

         (a)   Area draining to a downspout must be 500 square feet or less;

         (b)   Discharge must be to an area with a positive slope of 5% (one foot of fall per 20 feet of length, 20:1) or less; and

         (c)   Be a minimum distance of 75 feet from a watercourse or down slope property line.

      (2)   For paved areas (driveways):

         (a)   Runoff draining to a point must be 1,000 square feet or less;

         (b)   Discharge must be to a gravel strip or spreading device; and

         (c)   Flow length of the pervious surface must be greater than or equal to the contributing length.

(1980 Code, Ch. 24, Part 4, § 401) (Ord. 1403, passed 7-18-2011, § 401)