05-07_General_Notes.pdf

ARRA DEFERRED MAINTENANCE - TINKHAM AREA ROAD REPAIRS Sheet 5 of 32

GENERAL NOTES

1. Item 15101, Mobilization – All construction signing, traffic control, and cleaning of equipment is an indirect cost to

Mobilization. Equipment shall be washed, cleaned, and inspected by the Forest Service Engineering Representative prior to accessing the project.

2. Item 20301, Removal of excavated culvert – Culverts removed shall become the property of the Contractor and removed from Government Lands. The Contractor shall provide written proof that the culverts were disposed of at a certified recycling business or stored at the Contractor’s storage yard for personal use.

3. Item 20356A & B (metal & plastic), Removal of culvert end by cutting or beveling – See Note #2 above for disposal of the culvert pieces removed.

4. Item 20407, Select borrow - This work consists of placing pit run aggregate on Road #5500110, at Sta. 42+50 to level up the roadway. Compaction Method C and Finish Method A, layer placing, and compacting with hauling and spreading equipment until visual displacement ceases. All borrow material shall be a 4-inch minus gradation and be obtained from a Weed Free, Commercial Source approved by the Forest Service Engineering Representative. Jobsite generated suitable material may be utilized, but only if it is approved in advance by the F.S. Engineering

Representative.

5. Item 20415, Unsuitable excavation - This work consists of removing the cutbank slide from the ditchline on Road

#5500110 at Sta. 25+45. The removed material shall be hauled, placed, and compacted in a nearby location (within

1000’) approved by the F.S. Engineering Representative.

6. Item 20419A & B - Drainage excavation, type Roadway Ditch - This work consists of constructing roadway ditches in the locations and details as shown on the Plans. All work associated with constructing the ditches are an indirect cost to Item 20419A & B. All excess and unsuitable material excavated shall be hauled to a Designated Disposal Site approved by the F.S. Engineering Representative, unless otherwise As Specified on the Plans.

7. Item 20419 C - Drainage excavation, type Outlet Lead-off Ditch - This work consists of constructing the outlet and lead-off ditches in the locations and details as shown on the Plans. All work associated with constructing the ditches are an indirect cost to Item 20419C. All excess and unsuitable material excavated shall be hauled to a Designated

Disposal Site approved by the F.S. Engineering Representative, unless otherwise As Specified on the Plans.

8. Item 20420, Drainage excavation, type Driveable Rocked Drainage Dip – This work consists of constructing roadway dips in the locations and details as shown on the Plans. All work and materials associated with constructing the drainage dips are an indirect cost to Item 20420. Class 1 and Class 4 Riprap shall meet the requirements of

Specification 251 and shall be obtained from a Commercial Source approved by the F.S. Engineering Representative.

9. Item 20950, Pipe bedding – Bedding material for culvert installations shall be obtained from a Commercial Source or from the existing roadway surfacing which is conserved prior to excavation. If obtained from a Commercial Source, it shall meet the requirements of Item 32203 (Aggregate Base) and shall be approved by the Forest Service

Engineering Representative. Some jobsite generated material may be suitable for bedding, but only if it is approved in advance by the Forest Service Engineering Representative.

10. Item 23050B, Roadside brushing (Heavy) – This work consists of cutting and disposal of the existing roadway vegetation on Road #5500110. Clearing limits and requirements are shown on Typical D-3 (Brushing & Road

Reconditioning Details) on the Plans.

On Roads listed with Item 23050B (“Heavy” roadway brushing), the clearing and grubbing shall need to be accomplished with a mechanical mowing machine and other larger mechanized equipment (excavator or tractor) and/or a chainsaw. A lot of the vegetation is 4” in diameter or greater and removal of small stumps shall be necessary. Larger clearing slash shall be hauled and piled in a designated disposal site approved by the F.S.

Engineering Representative if scattering beyond the roadway is not feasible. Brushing debris shall not be deposited in stream channels or ditches.

ARRA DEFERRED MAINTENANCE - TINKHAM AREA ROAD REPAIRS Sheet 6 of 32

11. Items 25101, Placed riprap, Class 2 – Riprap shall be obtain from a Commercial Source and shall be approved, in writing, by the Forest Service Engineering Representative. Jobsite generated material and roadside material meeting the specification requirements for Class 2 Riprap may be utilized, but only it is approved in advance by the Forest

Service Engineering Representative.

12. Items 30322A, B, C, & D, Road reconditioning compaction method B or C - This work consists of reconditioning ditches, shoulders, roadbeds and aggregate surfaces. Reconditioning limits are shown on Typical D-3 (Brushing &

Road Reconditioning Details) on the Plans.

Compaction Method (b) (with vibratory roller) requires achieving the adequate moisture content, layer placing, spreading, and compacting until visual displacement ceases.

Compaction Method (a) (with hauling equipment) requires achieving the adequate moisture content, layer placing, spreading, and compacting with hauling equipment until visual displacement ceases.

a. On Roads listed with Item 30322A reconditioning of the roadbed shall be accomplished by scarifying the roadbed to a 4” depth, grading, spreading, and compacting with a vibratory roller, Compaction Method (b).

b. On Roads listed with Item 30322B reconditioning of the roadbed shall be accomplished without scarifying the roadbed and grading, spreading, and compacting with a vibratory roller, Compaction Method (b).

c. On Roads listed with Item 30322C reconditioning of the roadbed shall be accomplished with normal grading, spreading, and compacting with hauling equipment, Compaction Method (a).

d. On Roads listed with Item 30322D (“Heavy” reconditioning), reconditioning of the roadbed may need to be accomplished with other a road grader and other heavy equipment, Compaction Method (b). The existing roadway surface and ditches are in a non-maintained condition.

Note: On Road #9034, Lookout Point, grading and compacting shall not be required on the existing pavement from

Milepost 0.00 to milepost 0.45. Cleaning of ditches and culverts shall be required from milepost 0.00 to milepost 0.45.

13. Item 32203, Aggregate Base – The aggregate shall be obtained from a Weed Free, Certified, Commercial Source. It shall meet the requirements equal to the Washington State DOT mix 1-1/4” minus, dense graded. Material

Certification, Testing Reports, and Gradation Report shall be submitted to the Forest Service Engineering

Representative for approval prior to delivery to the project. Quantities are measured by the Cubic Yard. Load and weight tickets shall be submitted to the Forest Service Representative for verification of quantities (conversion from

Tons to Cubic Yards may be necessary). Compaction Method A (hauling equipment) requires achieving the adequate moisture content, layer placing, and compacting with hauling and spreading equipment until visual displacement ceases. All work associated with obtaining, hauling, placing, processing, and compaction are an indirect cost to Item 32203.

14. Item 60209, Turner elbow - This work consists of cutting and installing the culvert elbow for polyethylene outlet pipe. See the Drainage Construction Details on the Plans for installation details

15. Item 60273, Anchor assemblies for polyethylene pipe - This work consist of cutting and installing the steel anchor posts and steel wire for polyethylene outlet pipe. See the Drainage Construction Details on the Plans for materials and installation details.

16. Items 60274B, 24-inch corrugated polyethylene outlet pipe - This work consists of furnishing and installing the culvert outlet pipes. See the Drainage Construction Details on the Plans for installation details.

17. Items 60275A, B, & C, 18, 24, & 36-inch corrugated polyethylene pipe, compaction method B - This work consists of furnishing and installing the culvert pipes. See the Drainage Construction Details on the Plans for installation details.

18. Item 60710, Recondition drainage structure - This work consists of reconstructing culvert inlet catch basins to allow maximum flow capacity. See the Drainage Construction Details on the Plans for construction details.

ARRA DEFERRED MAINTENANCE - TINKHAM AREA ROAD REPAIRS Sheet 7 of 32

19. Item 63390, “AMERICAN RECOVERY AND REINVESTMENT ACT” signs – This work includes fabricating, furnishing, and installing the 4 signs. The 4 signs shall be installed by the Contractor 7 days prior to beginning any project work. See the Plans, sheets 27-32 for Sign Details and Fabricating Requirements.

The sign installation locations shall be staked on the ground by the Contracting Officer as listed below:

Road #5500 (Tinkham) – Milepost 0.00, End of the existing pavement.

Road #5500 (Tinkham) – Milepost 5.82, End of the existing pavement.

Road #9030 (Talupus Lake) – Milepost 0.02.

Road #9031 (Mason Lake) – Milepost 0.02.

20. Traffic Control & Signing – See the Supplemental Project Specifications for signing requirements and standard

Contractor furnished signs. For construction work to be done on all roads a Traffic Control Plan shall be submitted to the Forest Service Engineering Representative, for approval, 14 days prior to commencing project work. All traffic control and signing is an indirect cost to Item 15101, Mobilization.

Note: The following sign shall be installed at all Junctions with the I-90 Highway and at the junctions of Roads #9030 and #9031 in a location as approved by the FS Engineering Representative 7 days prior to commencing work on any road. The signs shall meet the current MUTCD Standards, mounted on a 4”x 4” x 10’ post, and meet the following requirements: The signs shall read:

ROAD CONSTRUCTION All signs on a 48”x 36” panel

FOR ______ MILES AHEAD Orange reflectorized with

EXPECT 30 MINUTE DELAYS 3” high black letters

(Date) TO (Date)

21. Timing of Instream Work – All culvert installation and stream work shall be done under the provisions of the 2005

WSDW-USFS MOU (Washington State Department of Fish & Wildlife – US Forest Service Memorandum of

Understanding).

A copy of the MOU document shall be provided to the Purchaser/Roadwork Contractor at the Pre-Work meeting for the road construction. The Purchaser/Roadwork Contractor shall have the MOU readily available on the jobsite at all times.

22. Dewatering – All culvert installation and stream work shall be done in the dry or in isolation from stream flow by the installation of a bypass culvert or by pumping the stream flow around the work area.

The temporary bypass system shall be of sufficient size to pass all flows for the duration of the installation.

Prior to releasing the water flow each work site, all bank protection and/or riprap armoring shall be completed.

23. Existing Gate & WSDOT Gravel Pit on Road #9034 – The Gate on Road #9034 at milepost 0.45 (WSDOT Rock

Pit) has a Forest Service and WSDOT lock. Upon request by the Purchaser/Contractor, a key will be provided from the Forest Service. The Purchaser/Contractor shall coordinate all road use and access through the gravel pit area with the WSDOT.