General Construction Specifications
SECTION 01568
EROSION CONTROL
PART 1 - GENERAL
1.01 SECTION INCLUDES
A. This work shall consist of erosion control on all cut and fill operations, excavation, backfill, or other construction activities within the limits of the construction site, within any temporary or permanent easements, and within any borrow site used during the period of construction. The protection of these sites shall continue throughout the construction period. During flood seasons, protect the sites by sandbagging, the pumping of water, and any other means appropriate to restrain flooding of plant and equipment. During dry weather, sprinkle the sites with water or use other means as necessary to provide dust control. In case of abnormally cold weather, any construction such as excavation work may be delayed until warmer weather or covered to prevent freezing.
PART 2 - PRODUCTS
2.01 GRASS SEED
A. Temporarily stabilize areas from which topsoil has been removed and topsoil stockpiles by seeding fast growing annuals such as cereal, rye, annual ryegrass, sudan grass, and millet that provide quick protection. These annual grasses are to be seed certified by the State Department of Agriculture and can be worked into the soil when the site is prepared for final seeding of more permanent species. Use commercial line and fertilizer on exposed areas subject to severe erosion.
PART 3 - EXECUTION
3.01 CONSTRUCTION AND EXCAVATION
A. Conduct construction so as to provide the site with maximum protection from erosion at all times.
B. Conduct excavation activities to provide erosion and sediment control as follows:
1. Do not start clearing and excavation until a firm construction schedule is submitted to and approved by the Engineer. Continuously coordinate the schedule with the clearing and excavation activity.
2. In streets and other paved areas, remove excavated material from the site as construction progresses to prevent any erosion of this material.
3. In other areas, place the excavated material so as not to block any drainage area. Replace this excavated material in the trench immediately after repairs have been completed and are approved by the Owner.
4. Retain natural vegetation whenever feasible.
5. Restore and cover exposed areas subject to erosion as quickly as possible by means of seeding and mulching. Use diversion ditches or other methods as appropriate to prevent storm water from running over the exposed area until seeding is established as specified.
6. Take particular care along streams and drainage ditches so that fallen trees, debris, and excavated material will not adversely affect the streamflow. Exercise care to minimize the destruction of streambanks. Wherever the streambanks are affected by construction, reduce the slope of the streambanks to provide a suitable condition for vegetative protection. Minimize land exposure in terms of area and time.
7. Cover exposed excavated areas with mulch or vegetation.
8. Mechanically retard the rate of runoff water.
9. Trap the sediment contained in the runoff water.
10. Divert water from erosive areas.
11. Take care during the pouring of concrete, hauling of materials, etc., to keep vehicles from creating a severe erosion problem. Proper scheduling of operations and prompt repair of ruts created during this operation is necessary from this source.
12. Control dust by sprinkling or other means as necessary to keep it to a minimum.
13. Pave or otherwise stabilize roadways and driveways as soon as feasible.
C. Regrade and reseed surfaces eroded or otherwise damaged during any and all construction operations as necessary.
END OF SECTION
