Caney 3A Mitigation Spec Revisions.docm

National Standard Material Specifications Part 642 – National Engineering Handbook

0. Items of Work and Construction Details Items of work to be performed in conformance with this specification and the construction details therefore are:

Subsidiary Item, Pollution Control This item shall consist of performing all work and furnishing all materials necessary to accomplish the work defined in Section 1 of this specification, including all works required to implement the Storm Water Pollution Prevention Plan. Vegetation described within this section will apply to disturbed areas including construction camp sites, and other areas disturbed by contractor activities not specifically addressed by Construction Specification 6, Vegetative Establishment.

These disturbed areas within the permanent fence and areas outside the permanent fence where native vegetation was disturbed during construction of the fence shall be vegetated in accordance with the provisions of Construction Specification 6, Vegetative Establishment, and any applicable requirements of the approved Storm Water Pollution Prevention Plan.

All other disturbed areas outside the permanent fence, including areas such as the construction camp sites and access roads shall be scarified and vegetated with like grasses of the surrounding area. Vegetation shall be approved by the engineer. Seeding shall be completed in accordance with the approved Storm Water Pollution Prevention Plan and Construction Specification 6, Vegetative Establishment.

Sediment filters will be furnished and installed as a minimum to the lengths and locations noted on the drawings and additionally as needed to comply with the SWPPP. The contractor shall inspect installed sediment filters on a routine basis and after any rainfall event sufficient to disrupt construction operations. Maintenance will be required in a timely manner for any sediment filters no longer functioning as installed or in situations where more than ½ of the capacity has been lost.

In Section 5, Air pollution, firebreaks or guards are not shown on the drawings.

The Contractor's written plan for pollution control shall be approved prior to the start of construction operations. Written plan shall at a minimum include proposed sequencing of operation to minimize duration and size of disturbed areas.

Separate payment will not be made for this item of work. Compensation of this item will be included in the payment for bid items 3 and 5, Clearing and Grubbing.

NRCS-8/25/2009 5-4

TX-CANEY CREEK 3A MITIGATION

7. Items of work and construction details

Items of work to be performed in conformance with this specification and the construction details therefore are:

0. Subsidiary Item, Vegetative Establishment

(1) This item shall consist of providing the seed mix, preparing the seedbed, and seeding areas associated with Site 1 and 2 and disturbed areas adjacent to constructed fences.

(2) The grass seed mixture shall consist of Big (Kaw) Bluestem (0.3 Pls lb/ac); Little (Native) Bluestem (1.2 Pls lb/ac); Lometa Indiangrass (1.1 Pls lb/ac); Alamo Switchgrass (0.7 Pls lb/ac) and Canada Wildrye, (4.5 lb/ac).

(3) Seed will be broadcast and followed with cultipacking.

(4) In Section 2, Material, the seed mixture may be delivered to the site pre-mixed in a container sealed by the supplier and fully tagged identifying the mix.

(5) Separate payment will not be made for this item. Compensation for this item will be included in the payment for Bid Item 2, Field Fence.

TX-CANEY CREEK 3A MITIGATION