When specified, the engineer will measure and pay for:
Embankment, for materials that have proven to be untreatable and are removed upon approval of the engineer.
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215.1DESCRIPTION
1 This section describes the requirements for control of pollutants and discharges of storm
water from construction and industrial activities, including temporary and permanent measures to control erosion.
215.2MATERIALS
1 Provide materials in accordance with the following:
Materials
Subsection
Burlap Bag Curbs Cover Crop Seed
806.8
Erosion Control Agent Mulch, Straw, or Hay Silt Fence Wire Staples Woven Wire Backing
806.1 806.5 806.2 805 806.4 812.3
2 Provide silt fence posts with a nominal wood size of 2 in × 2 in [50 mm × 50 mm] or
steel T-post weighing at least 1.25 lb/ft [2 kg/m]. Tie the silt fence to the post with wire, cord, staples, pockets, or other approved means. 3 Provide erosion bales with approximate external dimensions of 18 in × 18 in × 36 in [450
mm × 450 mm × 900 mm], weighing from 40 lb to 70 lb [20 kg to 35 kg] and tightly bound with wire ties or nylon twine. To secure, use 3-foot [0.9 m] wooden stakes with a nominal dimension of 2 in × 2 in [50 mm × 50 mm]. 4 Provide
excelsior sediment logs made of excelsior that is encased in a tube of polypropylene netting, having a minimum diameter of 12 in [300 mm], a standard length of 10 ft [3.0 m], and a weight of approximately 4.0 lb/ft [5.95 kg/m]. To secure, use 3-foot [0.9 m] wooden stakes with a nominal dimension of 2 in × 2 in [50 mm × 50 mm]. 5 Synthetic triangular silt dikes consist of geotextile-wrapped foam or heavy plastic mesh.
Provide foam dikes with a minimum height of 10 in [250 mm], sides of equal length, base of 20 in [500 mm], standard length of 7 ft [2.1 m], and with an outer cover of woven geotextile fabric with flaps extending 24 in [600 mm]. Provide heavy plastic mesh dikes with height of 9 in [230 mm], sides of equal length, base of 11 in [280 mm] base, and standard length of 3.6 ft [1.1 m]. To secure, use U-pin wire staples.
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Storm Water Pollution Prevention