Attachment_B_-_Drawings.pdf

US Department of Agriculture Forest Service

PROJECT

LOCATION

Region Nine

Superior National Forest - Laurentian Ranger District St. Louis County T58N, R14W, S35

ICON DAM REMOVAL

ST. LOUIS RIVER

SHEET SHEET TITLE

C U s e r s p h a m p s t o n D o c u m e n t s I c o n

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TECHNICAL NOTES

ICON DAM REMOVAL

1/26/15

D. MATTEI

P. HAMPSTON

P. HAMPSTON

TECHNCIAL NOTES:

GENERAL:

1. CONSTRUCTION SHALL BE COMPLETED BETWEEN 6/1/15 AND 10/30/15.

2. DAM SITE IS BEHIND A LOCKED GATE ON A PRIVATE ROAD. A PRE-BID MEETING WILL BE HELD ON-SITE ON 4/15/15 AT 10:00 AM. INTERESTED CONTRACTORS ARE HIGHLY ENCOURAGED TO ATTEND AS THIS WILL BE THE ONLY OPPORTUNITY TO PERFORM A SITE VISIT BEFORE BIDDING.

ACCESS:

3. TRIMMING AND BRUSHING OF TREES ALONG FR 1060, PRIVATE ROAD, AND TEMPORARY CONSTRUCTION ROAD AS NEEDED FOR CONSTRUCTION ACCESS SHALL BE CONSIDERED INCIDENTAL TO CONTRACT.

4. TRIMMING AND BRUSHING LOCATIONS SHALL BE APPROVED BY THE COR AND SHALL BE PERFORMED IN ACCORDANCE WITH SPECIFICATION 201.

5. PERFORM PRE-HAUL MAINTENANCE AS FOLLOWS: 2.0 MILES OF ROADBED RECONDIDTIONING FROM HWY 110 TO TEMP ROAD BEGINNING, IN ACCORDANCE WITH SPECIFICATION 303. PLACE AND COMPACT 800 CY OF SPOT FILLS WITH SELECT TOPPING ALONG FR 1060 AT LOCATIONS

STAKED BY THE FS IN ACCORDANCE WITH SPECIFICATION 204.

6. MATERIAL NEEDED FOR FR 1060 AND OTHER LOCATIONS IS AVAILABLE FROM THE SNF SKIBO PIT. LOCATION AND EXTENT OF REMOVAL OF MATERIAL MUST BE IN ACCORDANCE WITH COR DIRECTION. CONTRACTOR IS RESPONSIBLE FOR SCREENING AND MIXING MATERIAL AS

NEEDED TO MEET SPECIFICATION 704. CONTRACTOR IS RESPONSIBLE FOR REMOVING AND REPLACING EXISTING ROCK BARRIER TO PIT AS DIRECTED BY COR.

7. CONTRACTOR IS RESPONSIBLE FOR DAMAGE TO FR 1060 AND PRIVATE ROAD. REPAIR REQUIRED TO RESTORE FR 1060 AND PRIVATE ROAD TO PRE-CONSTRUCTION CONDITION WILL BE CONSIDERED INCIDENTAL TO CONTRACT.

8. CONTRACTOR SHALL CONSTRUCT APPROXIMATELY 0.5 MILES OF TEMPORARY CONSTRUCTION ROAD FROM EXISTING PRIVATE ROAD THROUGH THE PROJECT SITE, AS STAKED BY THE GOVERNMENT. TEMPORARY CONSTRUCTION ROAD DESIGN WILL BE DETERMINED BY

CONTRACTOR TO FACILITATE CONSTRUCTION. TEMPORARY CONSTRUCTION ROAD WILL BE PAID FOR UNDER THE SECTION 190 PAY ITEM LISTED IN THE BID SCHEDULE. ALL CLEARING AND GRUBBING ASSOCIATED WITH TEMPORARY ROAD WILL BE CONSIDERED INCENDENTAL TO

TEMPORARY ROAD CONSTRUCTION.

9. A TRUCK TURN-AROUND AREA IS AVAILABLE FOR CONTRACTOR AS SHOWN IN SHEET 5 OF 14. LIMITS OF AVAILABLE TRUCK TURN-AROUND AREA SHALL BE STAKED BY THE GOVERNMENT. CLEARING, GRUBBING, GRADING, AND FURNISHMENT AND INSTALLATION OF FILL SHALL BE

DETERMINED BY CONTRACTOR TO FACILITATE CONSTRUCTION AND BE CONSIDERED INCIDENTAL TO CONTRACT.

10. UPON COMPLETION OF WORK ALL IMPORTED ROAD MATERIAL USED FOR THE TEMPORARY CONSTRUCTION ROAD SHALL BE REMOVED AND DISPOSED.

11. UPON COMPLETION OF WORK THE BEGINNING OF TEMPORARY CONSTRUCTION ROAD SHALL BE OBLITERATED AS SHOWN ON SHEET 15 AND PER SPECIFICATION 211.

PROJECT STAGING/DISPOSAL AREA:

12. AVAILABLE PROJECT STAGING AND DISPOSAL AREA OF APPROXIMATELY 0.8 ACRES WILL BE STAKED IN FIELD AS SHOWN ON SHEET 4 .

13. CONTRACTOR IS RESPONSIBLE FOR PREPARATION OF STAGING AREA INCLUDING CLEARING AND GRUBBING, GRADING, AND PLACEMENT OF FILL AS DETERMINED BY CONTRACTOR TO FACILITATE CONSTRUCTION. PREPARATION OF PROJECT STAGING AREA IS CONSIDERED

INCIDENTAL TO CONTRACT.

14. CONTRACTOR SHALL SALVAGE TOPSOIL DURING PREPARATION OF STAGING/DISPOSAL AREA. SALVAGED TOPSOIL SHALL BE SPREAD OVER DISPOSAL PILE BEFORE SEEDING.

SAINT LOUIS RIVER WATER MANAGEMENT:

15. CONTRACTOR SHALL CONSTRUCT TEMPORARY RIVER CROSSING TO ACCESS SOUTH SIDE OF RIVER ACCORDING TO TEMPORARY CROSSING DETAIL. TEMPORARY CROSSING MUST PROVIDE A MINIMUM TOTAL FLOW AREA OF 32.5 SF TO ALLOW ADEQUATE RIVER FLOW WITHOUT

OVERTOPPING. FINAL CONSTRUCTION METHODOLOGY TO BE APPROVED BY COR.

16. ALL MATERIAL INSTALLED FOR CROSSING SHALL BE COMPLETELY REMOVED AND DISPOSED.

DAM REMOVAL:

17. DISTURBANCE LIMITS SHALL BE STAKED IN THE FIELD BY THE GOVERNMENT.

18. EXISTING DAM IS VEGETATED WITH TREES AND SHRUBS. CLEAR AND GRUB ALL AREAS NECESSARY TO ACCOMPLISH DAM REMOVAL IN ACCORDANCE WITH SPECIFICATION 201 AND 203.

19. EXISTING DAM EMBANKMENT IS CONSIDERED TO BE A ROCK CRIB DAM CONSISTING OF TIMBER, METAL SPIKES AND BRACES, ROCK, BOULDERS, MUCK, AND SOIL.

SPILLWAY REMOVAL:

20. SPILLWAY IS DEFINED AS ALL MATERIAL WITHIN EXCAVATION LIMITS FROM STA 7+00 TO 8+50. SPILLWAY REMOVAL SHALL INCLUDE SPECIAL EXCAVATION AND MAY INCLUDE THE REMOVAL OF TIMBER, METAL SPIKES AND BRACES, ROCK, BOULDERS, MUCK, SOIL, TREE STUMPS, AND

SIMILAR MATERIAL.

21. ANY DEWATERING NECESSARY TO ACCOMPLISH THE WORK SHALL BE CONSIDERED INCEDENTAL TO THE CONTRACT.

DISPOSAL:

22. ALL CLEARING AND GRUBBING SLASH, INCLUDING MERCHANTABLE TIMBER SHALL BE DISPOSED IN ACCORDANCE WITH SPECIFICATION 203. SCATTER SLASH OVER DISTURBED AREAS AFTER WORK HAS BEEN COMPLETED. EXCESS SLASH MAY BE PILED AND BURNED IN DISPOSAL

AREA.

23. AN AVAILABLE DISPOSAL AREA HAS BEEN IDENTIFIED BY THE SNF AS SHOWN ON SHEET 4. NO TIMBER OR METAL DAM OR SPILLWAY ELEMENTS SHALL BE PLACED IN THIS DISPOSAL AREA.

24. ALL TIMBER AND METAL ELEMENTS OF THE SPILLWAY AND DAM REMOVAL SHALL BE SEPARATED AND BECOME THE PROPERTY OF THE CONTRACTOR. DISPOSAL OF THIS MATERIAL SHALL BE IN ACCORDANCE WITH ALL LOCAL, STATE, AND FEDERAL REGULATIONS. SEPARATION OF

MATERIAL SHALL BE CONSIDERED INCIDENTAL TO EXCAVATION AND SPILLWAY REMOVAL.

25. ALL MATERIAL EXCAVATED FROM DAM AND SPILLWAY WILL BE MEASURED FOR PAYMENT BY THE CUBIC YARD IN IT'S ORIGINAL POSITION IN ACCORDANCE WITH SPECIFICATION 204.

26. DISPOSAL SITE LIMITS SHALL BE STAKED IN THE FIELD BY THE GOVERNMENT. SIDESLOPES OF THE DISPOSAL MATERIAL SHALL NOT EXCEED 2:1 (HORIZONTAL:VERTICAL). HEIGHT OF DISPOSAL PILE SHALL NOT EXCEED 12 FEET. DISPOSAL AREA SHALL BE CAPPED WITH SALVAGED

TOPSOIL AND SEEDED IN ACCORDANCE WITH SPECIFICATION 625.

EROSION CONTROL:

27. PLACE EROSION CONTROL WATTLES AROUND TOE OF DISPOSAL PILE PER BEST MANAGEMENT PRACTICES FOR EROSION AND SEDIMENT CONTROL (FHWA). (APPROXIMATELY 400 FEET)

U s e r s p h a m p s t o n D o c u m e n t s I c o n

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AREA MAPS

ICON DAM REMOVAL

P. HAMPSTON

P. HAMPSTON

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SITE MAP

ICON DAM LOCATION MAP

U s e r s p h a m p s t o n D o c u m e n t s I c o n

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STAGING AREA CONTOUR MAP

ICON DAM REMOVAL

P. HAMPSTON

P. HAMPSTON

DATA SOURCE: MNGEO WMS SERVICE LIDAR HILLSHADE

ALL ELEVATION SHOWN IN MSL

APPROXIMATE ELEVATION ASSUMED DATUM 100.00'= 1507' MSL

STAGING AREA

CONTOUR MAP

U s e r s p h a m p s t o n D o c u m e n t s I c o n

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1" = 100'

DAM PLAN & PROFILE

ICON DAM REMOVAL

P. HAMPSTON

Feet

0 50 100

F L O

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S P

I L L W

A Y

NOTE: STATIONING IN FEET

A P

P R

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I M

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V A

T I O

N

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D

A T

U M

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S L

U s e r s p h a m p s t o n D o c u m e n t s I c o n

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1" = 100'

RIVER PLAN & PROFILE

ICON DAM REMOVAL

Feet

0 50 100

FLOW

U s e r s p h a m p s t o n D o c u m e n t s I c o n

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NOT TO SCALE

TEMP RIVER XING OPTION DETAILS

ICON DAM REMOVAL

H

V

EARTH CONSTRUCTION TEMP

CROSSING XS VIEW (TYPICAL)

EARTH CONSTRUCTION TEMP

CROSSING ELEVATION VIEW (TYPICAL)

MAT CONSTRUCTION TEMP CROSSING

ELEVATION VIEW (TYPICAL)

MAT CONSTRUCTION TEMP

CROSSING XS VIEW (TYPICAL)

NOTE: CROSSING SHALL BE CONSTRUCTED WITH MINIMUM 32.5 SF OPENING TO ALLOW ADEQUATE FLOW WITHOUT OVERTOPPING. FOR EXAMPLE: (5)-36" CMP's, (5)-42"x29" CMPA's, (3)-48" CMP's, or (3)-57x38"CMPA's. OTHER ALTERNATIVES MAY BE ACCEPTABLE WITH COR APPROVAL. EXCAVATION FROM NORTH SIDE OF

RIVER MAY BE USED TO CONSTRUCT CROSSING IF DEEMED SUITABLE FOR USE AS GRANULAR FILL BY COR.

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1" = 10'

XS-1

ICON DAM REMOVAL

U s e r s p h a m p s t o n D o c u m e n t s I c o n

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1" = 10'

XS-2

ICON DAM REMOVAL

U s e r s p h a m p s t o n D o c u m e n t s I c o n

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1" = 10'

XS-3

ICON DAM REMOVAL

SPILLWAY EXCAVATION

BEGINS

U s e r s p h a m p s t o n D o c u m e n t s I c o n

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1" = 10'

XS-4

ICON DAM REMOVAL

SPILLWAY EXCAVATION

ENDS

U s e r s p h a m p s t o n D o c u m e n t s I c o n

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1" = 10'

XS-5

ICON DAM REMOVAL

U s e r s p h a m p s t o n D o c u m e n t s I c o n

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I c o n

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1" = 10'

XS-6

ICON DAM REMOVAL

U s e r s p h a m p s t o n D o c u m e n t s I c o n

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1" = 10'

XS-7

ICON DAM REMOVAL

U s e r s p h a m p s t o n D o c u m e n t s I c o n

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NOT TO SCALE

TEMP ROAD CLOSURE DETAIL

ICON DAM REMOVAL

TEMP ROAD CLOSURE DETAIL

PLAN VIEW