C. Silt Fence:
1. Support fence: 14-gauge, 4-inch x 4-inch mesh, 36-inch-high livestock
fence.
2. Post: Post at 6'0" on center to be No. 4 rebar, 2" x 2" wood, 3/4" steel
pipe or equivalent.
3. Fabric: Previous sheet of synthetic polymer from non-woven continuous
filaments manufactured by Mirafi, Inc., Monsanto Textile Co., or Amoco
Fabrics co., meeting the following minimum requirements.
¢ Water permeability - 500 gal/min./ft.2.
¢ Thickness - 70 mils, when tested in accordance with ASTM D-1777.
¢ Bursting strength - 200 psi when tested in accordance with ASTM-D
¢ Trapezoid Tear strength - 50 lbs. when tested in accordance with ASTM
¢ Ultraviolet Degradation - 1 year with less than 25% loss of bursting
and tear strength.
¢ Equivalent Opening Size (EOS) - 50 min. and 100 max.
D. Silt Socks:
1. Silt socks shall be Siltsoxx by Filtrexx (or approved equal) in accordance with
the plans and details.
PART 3 —- EXECUTION
3.01 SILTSACKs® AND STABILIZED CONSTRUCTION ENTRANCE:
A. All SILTSACKs® shall be installed in all catch basins that receive flow from the
disturbed areas of the project in accordance with the manufacturer’s recommendations.
B. SILTSACKs® shall not be removed until finish grading, paving and final loam and
seeding have been completed. Maintain SILTSACKs® in good conditions until
removed.
3.02 ROADWAYS AND PAVEMENT AREAS:
A. As soon as possible after utility work has been installed, the roadways shall be brought
to subgrade, and temporary or permanent gravel base and pavement shall be placed.as
per Specifications.
2022 Sewer Replacement Project Erosion Control
Nashua, NH 02370-2
