AG-0116-S-13-0022_-01.pdf

1 1

-01 04/29/2013

USDA Forest Service Tongass National Forest 648 Mission St Ketchikan AK 99901

AG-0116-S-13-0022

04/08/2013

Tongass National Forest Ketchikan / Misty Fiords Ranger District Calamity Carroll Road Stabilization

- The date and time set for receipt of sealed bids (solicitation page 1, block 13.a.) is changed from 2PM, 05/15/2013, to 2PM, 05/20/2013.

- The fill-in for the bid acceptance period (solicitation page 1, block 13.d.) is 60.

- The clause at FAR 52.217-7 (solicitation page 19) is deleted.

- The Supplemental Specification (solicitation Attachment 2) is updated to Revision 1, attached. This Rev. 1 provides superseding text for the entire Section 157.

John Inman, Contracting Officer this page blank

Forest Service Supplemental Specification

Calamity Carroll Road Stabilization a supplement to FP-03, Standard Specifications for the Construction of Roads and Bridges on Federal Highway Projects

Attachment 2 to Solicitation AG-0116-S-13-0022

April 8, 2013

Rev. 1, 04/29/2013, provides replacement pages 8, 9, and 10 as a complete replacement for Section 157.

Solicitation AG-0116-S-13-0022 Attachment 2 Calamity Carroll Road Stabilization 8 of 20 Supplemental Specification

Rev. 1, 04/29/2013

Add the following:

Contract quantities will be adjusted only when there are errors in the original design of 15% or more.

Change the following:

“(b) Cubic yard” to “(c) Cubic yard”.

Add the following definition:

(p) Thousand Board Feet (Mbf). 1,000 board feet based on nominal widths, thickness, and extreme usable length of each piece of lumber or timber actually incorporated in the job. For glued laminated timber, 1,000 board feet based on actual width, thickness, and length of each piece actually incorporated in the job.

157 - Soil Erosion Control

157.00_01_us_10_10_2006

157.02 Materials

Add the following:

Provide bales, wattles, logs and rolls from a certified noxious weed free source.

157.03 General.

Delete the first two paragraphs and replace with the following:

Submit an Erosion Control Plan detailing permanent and temporary control measures to minimize erosion and sedimentation during and after construction in accordance with the plans and storm water permits. Do not modify the type, size, or location of any control or practice without approval. Submit the erosion control plan proposal at least 7 days before operations begin to the CO for approval.

Reflect in the Erosion Control Plan special concerns and measures necessary to protect resources and government improvements. Include:

(a) The construction activities and sequence of implementation relating to specific erosion control measures.

(b) The location and type of permanent controls to be implemented during construction.

Examples include but are not limited to settling pools, application and timing of seed and fertilizer, use of wattle and coir logs, and construction of ditch flow cross drains in proximity to flowing streams.

(c) The location and type of temporary controls to be implemented during construction.

(d) For work in stream channels describe level of ground and vegetative disturbance and measures to reduce potential sediment delivery.

Add the following to the third paragraph:

Calamity Carroll Road Stabilization 9 of 20 Supplemental Specification

Rev. 1, 04/29/2013

Upon completion of construction at the site, remove all temporary erosion control devices, dewatering materials and equipment from Government property.

157.09 Diversions.

Delete the first sentence and replace with the following:

When shown on the plans, construct temporary channels, temporary culverts, or sandbags to divert water around disturbed areas and slopes. Earthen dams are prohibited.

Calamity Carroll Road Stabilization Example Erosion Control Plan

Brief Project Description:

This project is designed stabilize existing roads in 2 separate locations, Upper Carroll and Shoal Cove. Upper Carroll experienced numerous landslides along several miles of road during a high rainfall event in 2010. A 70’modular bridge was washed downstream, many culverts were overwhelmed with debris, and several short segments of roads were covered with up to 6’ of logs and displaced soil. Shoal Cove road work involves removing drainage structures on roads to be stored.

General project objectives are to: improve natural hill slope and stream channel hydrology by installation of new road drainage structures; removal of stream crossing fills; construction of cross drains; and reducing existing and potential sedimentation into stream courses by removal of unstable fills and re-vegetation of disturbed soils. More specific objectives are the following:

Remove drainage structures damaged or plugged with debris.

Remove drainage structures on isolated roads not needed in the near future.

Restore stream beds and banks to natural conditions on stored roads.

Remove landslide material from roads and ditches, placing all material in a stable location.

Restore drainage patterns by installing new culverts.

Minimize cut slope disturbance (excavations).

Avoid placement of materials in unstable areas (wet, swales, headwalls).

Recover the displaced modular bridge from the stream.

Establish cross drains to move ditch flow across the roadway prior to reaching streams.

Erosion Control Measures Temporary:

1. Seed and fertilize all disturbed areas within 14 days of completion of construction activities at the site.

2. Install temporary check dams and sediment fences as necessary to minimize the entry of silt-laden water into streams or other water bodies.

Permanent:

1. Space cross ditches to minimize erosion

Calamity Carroll Road Stabilization 10 of 20 Supplemental Specification

Rev. 1, 04/29/2013

2. Armor all cross drain outlets with large (12”+ size) rock obtained from the excavated road prism.

3. Armor with rock the entire length and width of the 108” culvert removal site on road 8444000.

4. Dispose of excess material (spoils) so it does not enter stream channels or other water bodies. Place excess material a minimum of 20’ for stream channels.

Specific Sites of Concern: (large fills, stream-adjacent slopes, unstable soils):

Landslide areas at Upper Carroll Inlet on road 8448000 and road 8444000 at Shoal Cove.

Scheduling (includes timing, item/provision, and contract specifications/reference):

Contract Construction

Site Item/Provision Timing Specification Entire project Seed and fertilize 14 days after completion of each site of disturbed soils 625(02)

Entire project Clearing: do not place removed brush in streams

During operations 201(03)

Entire project Culvert installation, removal and ditch cross drain construction

During operations 833

Entire project Outlet pipes and cross drains During operations 251(01)a Entire project Landscape preservation During operations H.2 Stream crossings Number of crossings During operations H.10 Entire Project Endhaul disposal sites During operations C.1 Fish bearing streams

Instream activities Fish window H.10

Contractor: Date:

Contracting Officers Representative: Date: