Specifications include, but are not limited to: A. Mulch: Use one of the following: 1. Straw or hay. 2. Wood waste, chips, or bark. 3. Erosion control matting or netting. 4. Polyethylene film, where specifically indicated only. B. Grass Seed For Temporary Cover: Select a species appropriate to climate, planting season, and intended purpose. If same area will later be planted with permanent vegetation, do not use species known to be excessively competitive or prone to volunteer in subsequent seasons. C. Bales: Air dry, rectangular straw bales. 1. Cross Section: 14 by 18 inches, minimum. 2. Bindings: Wire or string, around long dimension. D. Bale Stakes: One of the following, minimum 3 feet long: 1. Steel U- or T-section, with minimum mass of 1.33 pound per linear foot. 2. Wood, 2 by 2 inches in cross section. E. Silt Fence Fabric: Polypropylene geotextile resistant to common soil chemicals, mildew, and insects; non-biodegradable; in longest lengths possible; fabric including seams with the following minimum average roll lengths: 1. Average Opening Size: 30 U.S. Std. Sieve, maximum, when tested in accordance with ASTM D4751. 2. Permittivity: 0.05 sec^-1, minimum, when tested in accordance with ASTM D4491. 3. Ultraviolet Resistance: Retaining at least 70 percent of tensile strength, when tested in accordance with ASTM D4355/D4355M after 500 hours exposure. 4. Tensile Strength: 100 pounds-force, minimum, in cross-machine direction; 124 poundsforce, minimum, in machine direction; when tested in accordance with ASTM D4632/D4632M. 5. Elongation: 15 to 30 percent, when tested in accordance with ASTM D4632/D4632M. 6. Tear Strength: 55 pounds-force, minimum, when tested in accordance with ASTM D4533/D4533M. 7. Color: Manufacturer's standard, with embedment and fastener lines preprinted. F. Silt Fence Posts: One of the following, minimum 5 feet long: 1. Steel U- or T-section, with minimum mass of 1.33 pound per linear foot. 2. Softwood, 4 by 4 inches in cross section. G. Gravel: See Section 32 1123 for aggregate. H. Riprap: See Section 31 3700. I. Concrete: See Section 03 3000.