AMnedment_01__Attachment_4_Drawings_Complete_Revised_7_09_2015.pdf

NATIONAL FORESTS IN NORTH CAROLINA

NANTAHALA NATIONAL FOREST

NANTAHALA RANGER DISTRICT

HOUSTON DAM REMOVAL PROJECT

AND STREAM RESTORATION

SHEET NO CONTENT

1 COVER SHEET

CONSTRUCTION NOTES

EXISTING CONDITIONS - DAM AREA

GRADING PLAN & LIMIT7

PROJECT LOCATION & AERIAL

STREAM AND DAM PROFILES WITH BORING LOCATIONS

CORE BORINGS MAP

STORMWATER, EROSION AND POLLUTION CONTROL PLAN

LOG VANE, BEAVER DAM SIMULATION & CROSS VANE

TOE WOOD/SOD MAT (BANKFULL BENCH)

EROSION CONTROL MEASURES - 1

EROSION CONTROL MEASURES - 2

DEWATERING PLAN

STREAM RESTORATION STRUCTURES

- VICINITY MAP -

GEORGIA

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NORTH CAROLINA

HIGHLANDS

FRANKLIN

CASHIERS

LAKE

GLENVILLE

SCALY

MOUNTAIN

PROJECT SITE

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Whiteside

Mountain

Buck C r e e k

R o a d

EQUIPMENT & OPERATOR AND STRUCTURAL STONE SPECIFICATIONS

STORMWATER DETAILS_1

STREAM CROSS SECTION A - A' & TYPICAL STREAM SECTION

LANDSCAPE PLAN

2 PROJECT CONTEXT & WATERSHED

BREACH PLAN

STORMWATER DETAILS_2

TYPICAL DEWATERING DETAILS

TYPICAL PLANTING PLAN DETAILS

SHEET NO CONTENT

S1 COVER SHEET

S2 EXISTING CONDITIONS

S3 CONSTRUCTION NOTES

S4

S5

TRAFFIC MAINTENANCE PLANS6

MATERIAL STORAGE AREA MAP

Date

RECOMMENDED BY: Mike Wilkins

APPROVED BY: Kristin Bail

RECOMMENDED BY: Lynn L. Hicks

REGION 8

U.S.D.A. FOREST SERVICE

NATIONAL FORESTS IN N.C.

Recreation, Engineering Heritage Staff Officer - National Forests in North Carolina

NANTAHALA NATIONAL FOREST

District Ranger - Nantahala Ranger District

Forest Supervisor - National Forests in North Carolina

Date

Date

Date

DESIGNED BY: James Barry Jones

Assistant Forest Engineer - National Forests in North Carolina

PROJECT CONTEXT & WATERSHED

SCALE: 1" = 1200'

600'

0'

600' 1200'

N O

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NATIONAL FORESTS IN NORTH CAROLINA

NANTAHALA NATIONAL FOREST - NANTAHALA RANGER DISTRICT

HOUSTON DAM REMOVAL

AND STREAM RESTORATION

PROJECT LOCATION & AERIAL

SCALE: 1" = 60'

30'

0'

30' 60'

NORTH

NATIONAL FORESTS IN NORTH CAROLINA

NANTAHALA NATIONAL FOREST - NANTAHALA RANGER DISTRICT

HOUSTON DAM REMOVAL

GENERAL NOTES:

1. FOR THIS PROJECT STANDARD SPECIFICATIONS FOR CONSTRUCTION OF ROADS AND BRIDGES ON FEDERAL

HIGHWAY PROJECTS AND SPECIAL PROJECT SPECIFICATIONS WILL BE USED, HEREINAFTER REFERRED TO

AS FP-03 SPEC.

2. STORAGE OF ALL EQUIPMENT ON SITE WILL BE AT THE CONTRACTOR'S RISK AND AT A LOCATION

APPROVED BY THE CONTRACTING OFFICER.

3. CONSTRUCTION EQUIPMENT SHALL BE CONFINED TO THE DISTURBED POND AREA, UNLESS OTHERWISE

APPROVED BY THE CONTRACTING OFFICER.

4. ALL EXCAVATION IS CONSIDERED TO BE UNCLASSIFIED.

5. CONTRACTOR SHALL BE RESPONSIBLE FOR REPAIR OF DAMAGE TO NATIONAL FOREST ROADS DUE TO

TRANSPORTATION OF CONTRACTORS EQUIPMENT AND OR MATERIALS.

6. CONTRACTOR SHALL BE RESPONSIBLE FOR DIVERSION OF WATER DURING CONSTRUCTION AS REQUIRED;

CONTRACTOR SHALL FOLLOW BMP'S TO ENSURE QUALITY.

7. EACH CULVERT'S LOCATION, LENGTH AND SKEW SHALL BE FIELD VERIFIED BY THE CONTRACTOR AND

APPROVED BY THE CONTRACTING OFFICER PRIOR TO ORDERING.

8. WOODY MATERIAL CUT DURING CULVERT INSTALLATION SHALL BE SCATTERED OUTSIDE

THE CLEARING LIMITS.

9. EXISTING CULVERTS TO BE REMOVED ARE THE PROPERTY OF THE CONTRACTOR AND SHALL

BE REMOVED FROM NATIONAL FOREST LANDS AND DISPOSED OF PROPERLY.

10. FILL SLOPE= 1.5:1, CUT SLOPE=1:1, OR AS STAKED BY THE CONTRACTING OFFICER OR AS

SHOWN ON THE PLANS.

11. WOODY MATERIAL GREATER THAN 2" IN DIAMETER OR LONGER THAN 3' SHALL NOT BE

INCORPORATED INTO CONSTRUCTED FILLS.

12. DEPTHS OF SILT MATERIAL SHOWN ON THE PLANS ARE ESTIMATED SOIL DEPTHS.

13. ALL RIPRAP SHALL BE PLACED BY HAND OR MACHINE, NOT SIDE CAST OR END DUMPED.

14. ALL PERMANENT SIGNS SHALL BE SECURED WITH TAMPER-RESISTANT HARDWARE APPROVED

BY THE CONTRACTING OFFICER.

15. PRIOR TO ANY EXCAVATION, CALL "NORTH CAROLINA ONE-CALL CENTER" AT 1-800-632-4949 OR 8-1-1.

16. THE CONTRACTOR IS RESPONSIBLE FOR ALL TRAFFIC CONTROL INCLUDING TEMPORARY SIGNING AND

PROTECTION OF THE PUBLIC. SIGNAGE BEYOND THOSE SHOWN ON THE DRAWING MAY BE REQUIRED.

17. TRAFFIC CONTROL SIGNS SHALL CONFORM TO MUTCD SPECIFICATIONS.

18. ALL DRAINAGE STRUCTURES CONSTRUCTED/RECONSTRUCTED/RECONDITIONED SHALL BE

CONSTRUCTED/RECONSTRUCTED/RECONDITIONED TO DRAIN.

19. ALL STAKES AND FLAGGING IN THE FIELD THAT WERE USED FOR PROJECT IMPLEMENTATION SHALL BE

GATHERED & REMOVED FROM FOREST LAND BY THE CONTRACTOR PRIOR TO FINAL ACCEPTANCE OF THE

PROJECT. THIS WORK IS CONSIDERED PART OF MOBILIZATION AND NO SEPARATE PAYMENT T WILL BE MADE.

20. A TRAFFIC PLAN OF TRUCKS ENTERING HIGHWAY WILL BE REQUIRED TO BE COORDINATED WITH NCDOT AND

A PERMIT FOR A TRAFFIC PLAN MAY BE REQUIRED BY NCDOT.

GENERAL NOTES: PAY ITEMS

1. CONTRACTOR IS RESPONSIBLE FOR PROTECTION OF ALL SURVEY STAKES AND MONUMENTS, QUALITY

CONTROL, AND SAMPLING AND TESTING, NO SEPARATE PAYMENT WILL BE MADE.

2. CLEARING REQUIRED FOR CONSTRUCTION, RECONSTRUCTION, MAINTENANCE, INSTALLATION OF OUTLET

DITCHES, CULVERT INSTALLATIONS AND RIPRAP PLACEMENT IS INCIDENTAL TO THAT WORK REQUIREMENT

AND NO SEPARATE PAYMENT WILL BE MADE.

3. IF A CONCRETE DAM CORE IS ENCOUNTERED, THE CONTRACTOR SHALL DISPOSE OF THE MATERIAL

PROPERLY. THIS MATERIAL WILL NOT BE ALLOWED IN THE STOCK PILE LOCATION AND CONTRACTOR

SHOULD CHECK WITH THE LOCAL LANDFILL FOR NECESARRY PERMISSIONS.

EROSION AND SEDIMENT CONTROL:

1. EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE INSTALLED PRIOR TO BEGINNING EARTH

DISTURBING ACTIVITIES IN ACCORDANCE WITH THE APPROVED EROSION CONTROL PLAN.

ADDITIONAL EROSION AND SEDIMENT CONTROL MEASURES MAY BE REQUIRED BY

CONTRACTING OFFICER.

2. STABILIZATION MEASURES SHALL BE INITIATED AS SOON AS PRACTICABLE IN PORTIONS OF THE

SITE WHERE CONSTRUCTION ACTIVITIES HAVE TEMPORARILY OR PERMANENTLY CEASED, BUT IN

NO CASE MORE THAN 14 DAYS AFTER WORK HAS CEASED.

3. ALL SEDIMENT AND EROSION CONTROL DEVICES SHALL BE INSPECTED EVERY SEVEN +7) DAYS OR

AFTER EACH RAINFALL OCCURRENCE THAT EXCEEDS ONE-HALF +1/2) INCH. DAMAGED OR

INEFFECTIVE DEVICES SHALL BE REPAIRED OR REPLACED.

4. CONTRACTOR SHALL PROVIDE SILT FENCE AND/OR OTHER CONTROL DEVICES, AS MAY BE

REQUIRED TO CONTROL SOIL EROSION DURING ROAD CONSTRUCTION.

5. SEDIMENT SHALL BE REMOVED FROM BEHIND TEMPORARY SILT FENCING WHEN THE DEPTH OF

SEDIMENT REACHES 6 INCHES.

6. ALL DISTURBED AREAS WHERE EARTH IS EXPOSED SHALL BE CLEANED, GRADED SMOOTH,

SHAPED TO DRAIN, AND SEEDED.

7. SEE SUPPLEMENTAL SPECIFICATION 713 - "ROADSIDE IMPROVEMENT MATERIAL" FOR SEED &

FERTILIZER MIXTURE. WHEN SECTION 625 IS NOT INCLUDED IN THE BID SCHEDULE, SEEDING IS

CONSIDERED INCIDENTAL TO OTHER WORK AND THERE WILL BE NO SEPARATE PAYMENT. REPAIR

SEEDING IF INITIAL SEEDING DOES NOT ESTABLISH SATISFACTORY COVER TO CONTROL EROSION, REPAIR WASHES, PREPARE SOIL, SEED AND MULCH AS BEFORE.

8. ALL TEMPORARY SEDIMENT CONTROL MEASURES AND PRACTICES SHALL BE REMOVED WITHIN

TWO (2) MONTHS AFTER THE FOREST SERVICE HAS ACCEPTED THE PROJECT.

CONSTRUCTION NOTES

HOUSTON DAM REMOVALHOUSTON DAM REMOVAL

AND STREAM RESTORATION

EQUIPMENT AND OPERATOR SPECIFICATIONS

A. Manner of Construction - Excavation will be done in a manner which will minimize sedimentation in the stream channel. Silt fence will be installed downstream of the construction area to reduce the risk of sediment entering the stream.

B. Equipment Operator Performance - Equipment operators shall be experienced and competent in the use of the equipment to which they are assigned. They shall be expected to demonstrate a level of proficiency with the equipment which enables them to be productive in all aspects of stream restoration work. Equipment operators shall be experienced in the construction of Rosgen designed structures; including the cross vane, J-hook vane, and Toe-wood/Sod mat.

C. Operators will be instructed by the construction inspector as to the desired result of construction activities. Operators will be responsible for determining how best to use equipment to achieve the desired results. Chain saw operators will be required to cut trees, limbs and root masses as necessary to facilitate the removal and placement of debris in the stream.

D. Environmental Considerations - Earth moving equipment will cross and operate in the stream flow only when necessary and only when directed to do so by the construction inspector. Equipment shall be new or of low hours and be maintained to prevent fuel, oil and lubricant spills in the vicinity of the stream. Refueling, repairs and lubrication will be performed at a safe distances from the stream and only at locations approved by the construction inspector where water is controlled by runoff control measures.

E. Safety Considerations - At work sites, where equipment will be operated on Forest Roads, flagman shall be stationed to warn oncoming traffic of congestion. Construction road signs shall be in place and a means of removing sediment, mud or rocks from roadways shall be established. The contractor will be responsible for the implementation of these measures.

F. Equipment Specifications Hydraulic Excavator:

Track mounted, hydraulic powered.

Excavator:

Min weight - 30,000 lbs Min. Reach - 22 feet Min Digging Depth - 20 feet Min Bucket size - 1.0 Cu Yd.

Min 115 HP Equipped with hydraulic thumb, with experienced operator as described above.

(More than 1 excavator may be required. Unit price bid should be for one excavator for one hour of running time).

IN-STREAM STRUCTURES SPECIFICATIONS

Structure Stone Description The work covered by this section consists of furnishing, stockpiling, placing and maintaining approved stone to be utilized to construct rock and log vanes, root wad structures, the step-pool structures, stream crossings, sediment and erosion control measures for use in locations as directed by the Designer. The quantity of stone may be increased, decreased, or eliminated entirely at the direction of the Designer.

Such variations in quantity will not be considered as alterations in the details of construction or a change in the character of the work.

Structure Stone, cont.

Materials Stone for Coarse Aggregate, No. 57 Stone, "Rip Rap-Class B", and "Boulder" shall consist of blasted stone or other stone approved by the Designer. The stone shall be sound, tough, dense, resistant to the action of air and water, and suitable in all other respects for the purpose intended.

All stone shall meet the approval of the Designer. While no specific gradation is required, the various sizes of the stone shall be equally distributed within the required size range. The size of an individual stone particle will be determined by measuring its long dimension.

Acceptance Criteria for Stone:

No more than 5 percent of the material furnished can be less than the minimum size specified, more than 10 percent of the material can exceed the maximum size specified. Boulders shall be relatively flat on either side in the same dimension, preferably the long dimension.

Construction The Contractor shall place stone, in locations shown on the construction plans to the thickness, widths, and lengths as shown on the construction plans or directed by the Designer. All stone shall be placed neatly and uniformly with an even surface to form an in-stream structure or a sediment and erosion control device or in accordance with the construction plans and special provisions, and shall meet the approval of the Designer.

Method of Measurement The quantity of stone required to construct the structures or sediment and erosion control measures detailed in these special provisions will be incidental to those bid items. However, field conditions may warrant the need for additional stone greater than the quantity specified or detailed for each bid item. The quantity of stone that has been incorporated into the project, as directed or approved by the Designer, which exceeds 110% of the quantity required for each bid item will be measured by weight. Measured by weight will require the quantity to be weighed in trucks on certified platform scales. Stone that was previously stockpiled for other bid items will not be measured a second time for this provision.

CLASS

REQUIRED STONE SIZES (INCHES)

Minimum Average Maximum

Boulder

36" x 20" x 12"

20 36 42

EQUIPMENT & OPERATOR

AND STRUCTURAL STONE SPECIFICATIONS

HOUSTON DAM REMOVAL

EXISTING CONDITIONS - DAM AREA

& DRAINED LAKE VIEWS

HOUSTON DAM REMOVAL

STORMWATER, EROSION AND

POLLUTION CONTROL PLANHOUSTON DAM REMOVAL

AND STREAM RESTORATION

SCALE: 1" = 30'

15'

0'

15' 30'

N O

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SCALE: 1" = 30'

15'

0'

15' 30'

N O

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BREACH PLAN

CORE BORINGS MAP &

DRAINED LAKE VIEWS

HOUSTON DAM REMOVAL

AND STREAM RESTORATION

SCALE: 1" = 30'

15'

0'

15' 30'

N O

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STREAM AND DAM PROFILES

WITH BORING LOCATIONS

HOUSTON DAM REMOVAL

AND STREAM RESTORATION

Not to Scale

AND STREAM RESTORATION

STORMWATER DETAILS - 1

AND STREAM RESTORATION

STORMWATER DETAILS - 2

LOG VANE, BEAVER DAM SIMULATION

& CROSS VANE

HOUSTON DAM REMOVAL

TOE WOOD/SOD MAT (BANKFULL BENCH)

HOUSTON DAM REMOVAL

EROSION CONTROL MEASURES - 1

HOUSTON DAM REMOVAL

EROSION CONTROL MEASURES - 2

HOUSTON DAM REMOVAL

DEWATERING PLAN

HOUSTON DAM REMOVAL

AND STREAM RESTORATION

SCALE: 1" = 60'

30'

0'

30' 60'

NORTH

TYPICAL DEWATERING DETAILS

HOUSTON DAM REMOVAL

STREAM CROSS SECTION A - A'

& TYPICAL STREAM SECTION

SCALE: 1" = 30'

15'

0'

15' 30'

A A'

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STREAM RESTORATION STRUCTURES

HOUSTON DAM REMOVAL

AND STREAM RESTORATION

SCALE: 1" = 60'

30'

0'

30' 60'

LANDSCAPE PLAN

HOUSTON DAM REMOVAL

AND STREAM RESTORATION

SCALE: 1" = 60'

30'

0'

30' 60'

TYPICAL PLANTING PLAN DETAILS

MATERIAL STORAGE AREA MAP

SCALE: 1" = 2000'

1000'

0'

1000' 2000'

N O

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NATIONAL FORESTS IN NORTH CAROLINA

NANTAHALA NATIONAL FOREST - NANTAHALA RANGER DISTRICT

HOUSTON DAM REMOVAL

AND STREAM RESTORATION

SCALE: 1" = 200'

50' 0' 50' 100'

N O

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SCALE: 1" = 30'

0' 20' 30'

N O

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10'

S1

SANTEETLAH CREEK DAM REMOVAL

AND FISH LADDER REMOVAL

S6

Date

RECOMMENDED BY: Mike Wilkins

APPROVED BY: Kristin Bail

RECOMMENDED BY: Lynn L. Hicks

Recreation, Engineering Heritage Staff Officer - National Forests in North Carolina

District Ranger - Nantahala Ranger District

Forest Supervisor - National Forests in North Carolina

Date

Date

Date

DESIGNED BY: James Barry Jones

Assistant Forest Engineer - National Forests in North Carolina

TEMPORARY WASTE &

EQUIPMENT STORAGE AREA

EXISTING GUARDRAIL

STEEPLY SLOPED TERRAIN

NOTE:

TEMPORARY CONSTRUCTION

ACCESS ROUTE TO BE

OBLITERATED BY

CONTRACTOR WHEN

PROJECT IS COMPLETE.

(NO ACCESS)

NOTE:

DIMENSIONS SHOWN

ARE APPROXIMATE ONLY.

S2

S6

SCALE: 1" = 50'

25'

0'

25' 50'

N O

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AND FISH LADDER REMOVAL

S3

AND FISH LADDER REMOVAL S6

DAM ELEVATION

V A

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VARIES

APPROXIMATELY 200 FT.±

VARIES

VARIES

A

V E

R A

G E

NOT TO SCALE

VARIES

18" REINFORCED

CONCRETE

STRUCTURE

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V E

R A

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R A

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S4

SANTEETLAH CREEK DAM REMOVAL

AND FISH LADDER REMOVAL

S6

S5

AND FISH LADDER REMOVAL S6

DRAWINGS

NOT TO SCALE

W3-4 W21-1a

36" x 36" MIN. 36" x 36" MIN.

BE PREPARED

TO STOP

TRUCKS

HAULING

LW21-15

36" X 36" MIN.

S6

S6

HOUSTON & SANTEETLAH CREEK DAM REMOVAL

AND STREAM RESTORATIONS

Sht 23