AG-6424-S-10-0002 Amend 1 CS710-6.pdf

Big Creek-Hurricane Creek 710-6 10/09 NRCS-Missouri

8. ITEM OF WORK AND CONSTRUCTION DETAILS

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

a. Bid Item A, Mobilization

(1) In addition to work items described in Section 2, this item shall also include the following work on the ingress and egress route (I & E) for Site H-27:

(a) Remove and reset HDPE drainage pipe on I & E route as shown on page 1 of the plans for Site H-27.

(b) 14 Tons (minimum) Entrance Gravel – MoDot Section 1006, 1” surfacing aggregate. See note on plans.

(c) Approximately 250 cubic yards of earthfill required to cover I&E pipe and slopes. Borrow shall come from pool borrow area.

b. Bid Item 1 - Site Preparation (All Sites)

(1) Indiana bat habitat trees, marked with a blue “X”, shall be “downed” on all sites no later than March 31, 2010. Marked trees may be removed by cutting or grubbing. To facilitate bat habitat tree removal, site clearing is allowed beginning March 1, 2010 through March 31, 2010. No other construction work on cleared sites, except pollution and erosion control practices consistent with Construction Specification 706 and the site’s SWPPP, will be allowed during the designated period. Once a site has been cleared during this period, subsequent construction work on that site shall progress on April 1, 2010 or as soon afterwards as site conditions permit, unless otherwise approved by the Contracting Officer. This work is subsidiary to Bid Item 1, Site Preparation.

c. Bid Item 8 – Drainfill (All Sites)

(1) This item shall consist of furnishing and installing drainfill in the sand diaphragm and diaphragm outlet drain as shown on the drawings.

(2) Pre-approved sources of drainfill are:

Drainfill Type ASTM C-33 Concrete Sand

Available Location(s)

Capital Sand, Inc. (Carrollton or Glasgow) Jefferson City, MO

(573) 634-3020 Contact: Steve Bohlken