Revised - Exhibit 3 - Trail Log .pdf

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RECOVERY* Glen Falls Trail reconstruction, Nantahala National Forest, North Carolina
Solicitation number
AG-4419-S-10-0754
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Revised Exhibit 3 - Trail Logs

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Glen Falls Trail Assessment Log, Pkg #12- Solicitation Amendment 1 -Revised 7.9.10 Page 1

Trail Log –Glen Falls Trail, Nantahala National Forest

Base Bid Section : Glen Falls Trail Observation Platforms and trail work starting at the trailhead parking area, NC-106 (Sta. 0+00) and ending at observation platform #4 (Station 34+24). This section is a Class 4 hiking trail. Base Bid includes construction of three Observation Platforms.

Optional Item - Main Trail Section: Starting at observation platform #4 (Station 34+24) and ending at the end of the trail at a parking area in Blue Valley area (Station 66+79).

Optional Item - Observation Platform 4 at Station 33+91

Optional Item – 385 LF Spur Trail to Swimming Hole at Station 41+65

Inspection Date: 2/19/2010 Inspector Name: Fred Lashley, Jody Maney, Bruce Lowe Length: 1.4 miles (including side trails) Trail Class: 3 & 4 Designed Use: hiking Managed Use: hiking Difficulty Level: moderate Average Width: 3’ Surface: Natural soils; gravel Wilderness Trail: No

This trail log illustrates items of work to be accomplished. The intent of the log is to give a description of the work, at a minimum; however it does not describe the full scope of the work nor identify every work item. Bidders must view the trail to assess full range of maintenance needs, access, and logistics of transporting imported materials. The Contractor shall maintain / improve the trail such that it conforms to current Forest Service standards. The primary goal of trail restoration is to establish positive drainage. Addition and restoration of grade dips are identified in the log at specific locations; however, it is expected that installation of more grade dips will be required, over and above what is called for here. A minimum of 50 grade dips per mile is required.

The Glen Falls trail runs from the trailhead off of NC-106 in Highlands to Blue Valley and drops about 700 feet of elevation over this distance. The trail utilizes numerous switchbacks and staircases to lose this elevation. Many of these structures need reworking and additional steps added in the steeper locations.

Switchback shortcuts need to be obliterated. Much of the side-hill trail is sloughing and needs to be re-dug upslope to its original location. Numerous roots will need to be removed. The last portion of the trail is along an old roadbed needing additional grade dips to remove water from the trail.

Where identified, replacement or installation of steps and crib walls should be rough-sawn 8”x8” pressure treated timbers per specifications.

Glen Falls Trail Assessment Log, Pkg #12- Solicitation Amendment 1 -Revised 7.9.10 Page 2

Station Maintenance Need Point of Interest

Notes or Photo

0+00

0+13

0+26

BEGIN BASE BID SECTION

GLEN FALLS TRAIL.

Start of Trail at Trailhead Parking Area

Add fill to create ramp at timbers parallel to trail.

Trail Junction with Chinquapin Mountain Trail

Add Grade Dip past trail junction

0+00 3+89

Add fill to establish positive drainage.

Add 2 Grade Dips

Trail is 6-8 feet wide and flat.

3+89 Viewing Area

3+89- 4+99

Incised Trail 12% grade Add Terraced Steps: 6

Trail narrows to 3 – 4 ft. Wide

5+00 Add Grade Dip

5+03- 5+21

5+21- 5+40

Incised Trail 18% Grade Add Terraced Steps: 4 Remove existing Timbers

Incised Trail 25% Grade Add Terraced Steps: 4

Notes:

Leave 2 existing terraced steps (these are the only 2 existing steps worth keeping along the whole trail) Add terraces below terrace in photo.

Stay right around tree and obliterate left.

5+40 Looking Back Tree is @ approx. 5+21 5+48 Add Grade Dip

Obliterate Social trail

Glen Falls Trail Assessment Log, Pkg #12- Solicitation Amendment 1 -Revised 7.9.10 Page 3

5+48- 5+85

Incised Trail 22% Grade Add Terraced Steps: 8 Remove all existing steps.

5+85 Add Grade Dip

5+90- 6+77

Incised Trail 22% Grade Add Terraced Steps: 30 Remove all existing steps

Photo from 6+77 looking back

6+77- 7+12

Remove berm Add Grade Dip

7+38 Obliterate Social trail Trail short cutting Switchback

7+57 Obliterate Social trail Add Grade Dip

Trail short cutting Switchback

7+85- 8+10

Switchback 45% Grade Add Steps: 30 Add Crib Walls: 50 sq. ft.

Stay above tree @ 7+80

Crib will switch side of steps as they fan through curve

8+20 8+30

Remove stump Add Crib Wall: 10 ft x 2 ft

Glen Falls Trail Assessment Log, Pkg #12- Solicitation Amendment 1 -Revised 7.9.10 Page 4

8+40- 8+55

Incised Trail 30% Grade Add Terraced Steps: 10

8+55- 9+05

Obliterate Existing Trails to Viewing Platform 1 Construct Single Trail to Viewing Platform Area @ 8+90 (see drawing for platform details)

18% Grade Add Steps: 9

See Detail of Viewing Platform 1

9+05- 10+70

15- 18% Grade Re-dig Trail Upslope

Add Grade Dip: 2

10+70- 10+84

Add Steps: 3 Crib Wall 30 ft. x 2 ft.

Glen Falls Trail Assessment Log, Pkg #12- Solicitation Amendment 1 -Revised 7.9.10 Page 5

11+13- 11+45

25% Grade Add Steps: 12 Crib Wall 30 ft. x 2 ft

11+45 Junction to Viewing

Platform 2. See included drawing for platform details.

Reconstruct/ maintain side trail that runs downslope to the left to platform location (approx. 60 LF).

Add steps on side trail: 10

Obliterate and rehabilitate the trail that runs to the right (approx. 180 LF) per Standard Specification Section 954 – Obliteration of Abandoned Trailways

Rehabilitation may include planting Rhododendron;

installation of check dams;

covering/filling trail with woody debris, rocks, logs, branches, and duff – to reestablish natural drainage patterns and vegetation;

and discourage future use.

Spur Trail to Platform 2

0+00 Junction with Main Trail

Photo of trail to the right – to be obliterated / rehabilitated - looking back

Glen Falls Trail Assessment Log, Pkg #12- Solicitation Amendment 1 -Revised 7.9.10 Page 6

End of trail to be obliterated. Photo looking back

11+45- 12+21

Re-dig Trail Upslope

12+21- 12+46

Add Crib Wall: 25 ft x 2 ft

13+31- 15+26

10% Grade

15+26- 15+44

28% Grade Add Steps: 8

Incised trail with lots of roots

15+44- 15+70

20% Grade Add Steps: 4 Add Crib Wall: 1’ x 26’

15+80- 16+24

18% Grade Add Steps: 4 Add Crib Wall: 1’ x 44’

16+24- 16+42

30% Grade Add Steps: 9 Add Crib Wall: 4’ x 18’

Add steps upslope of tree covering roots, not removing them

Glen Falls Trail Assessment Log, Pkg #12- Solicitation Amendment 1 -Revised 7.9.10 Page 7

Photo @ 16+42 Looking back

16+42- 17+90

Add Grade Dip: 3

17+90- 18+13

Add Crib Wall: 4’ x 23’

Large rock outcropping upslope

18+13- 18+99

18+99 19+75

22% Grade Add Steps: 27 Add Crib Wall: 4’ x 76’

Crib and steps up trail to left in photo

Move trail upslope of flagged tree @ 18+99 (not visible in Photo)

19+75 Center of Switchback Viewing Platform 3 See Drawing

Photo @ 19+75 looking back

19+75- 20+00

Ref: exist. log acting as crib wall – Platform 3 Dwg calls for removal of log and replacing with crib wall

See additional Platform Detail

20+00- 20+89

Remove Hazard Tree

21+15- 21+40

Remove log Crib Add Crib Wall: 3’ x 25’

21+40 22+30

Re-dig Trail Upslope Add Crib Wall: 2’ x 10’ Add Grade Dip: 2

Up slope has some rock outcropping. Crib to get pass rock

22+30- 22+97

22+97- 23+22

Add Crib Wall: 2’ x 25’ Crib to pass below large tree

23+22- 25+55

Glen Falls Trail Assessment Log, Pkg #12- Solicitation Amendment 1 -Revised 7.9.10 Page 8

25+55- 25+75

Re-dig Trail Upslope Add Crib Wall: 2’ x 20’

Crib lower side of trail just pass tree at top of following switchback to eliminate social trail cutting switchback

25+75- 26+20

Switchback Add Steps: 6 Add Crib Wall: 2’ x 10’

Photo @ 26+00 looking back at Center of Switchback

26+20- 28+05

Re-dig Trail Upslope Add Grade Dip: 3 Obliterate switchback short cuts

28+05- 28+15

Switchback Add Steps: 10 Add Crib Wall: 2’ x 10’

Crib wall replaces log in photo; down slope of lower leg of switchback

Photo @ 28+15 looking back up trail

28+15- 28+75

28+75- 28+95

Add Crib Wall: 2’ x 20’

29+15- 29+77

Switchback Add Steps: 6

Glen Falls Trail Assessment Log, Pkg #12- Solicitation Amendment 1 -Revised 7.9.10 Page 9

29+77- 33+18

Re-dig Trail Upslope

Obliterate Social trails

33+18- 33+45

Add Crib Wall: 2’ x 31’

33+45- 33+71

33+91

33+91- 34+24

28% Grade Add Steps: 12 Add Crib Wall: 2’x 26’

Center of Switchback Optional Item:

Optional Item - Viewing Platform 4 See Drawing

See Platform 4 Detail. Detail calls for the addition of crib wall here, associated with Viewing Platform, from large rock in lower left of photo pinned along rock slab.

END BASE BID SECTION

GLEN FALLS TRAIL.

BEGIN OPTIONAL ITEM

SECTION GLEN FALLS

TRAIL.

Photo @ 33+91 looking back

Photo @ 34+24 Looking back

34+24- 35+06

Add Crib Wall: 3’ x 82 ‘

Glen Falls Trail Assessment Log, Pkg #12- Solicitation Amendment 1 -Revised 7.9.10 Page 10

35+06- 41+25

Restore Tread

Add Grade Dip: 4

Photo @ 39+05 looking back

41+25- 41+65

41+65

18% Grade Incised Tread/ Climbing Turn Add Steps: 8

Obliterate Trail left (right in photo)

Optional Item - Trail Junction to Swimming Hole [Spur Trail is 385 ft to Creek 28% Grade for 38’ Maintain trail. Remove old

CMP @1+88]

Photo @ 41+65 looking back

41+65- 45+60

45+60- 45+77

Switchback Remove existing Steps Add Steps: 8

Glen Falls Trail Assessment Log, Pkg #12- Solicitation Amendment 1 -Revised 7.9.10 Page 11

45+77- 46+48

Photo looking back

46+48- 49+99

Minor Re-dig Trail Upslope

49+99- 50+45

Rocky Outcrop Add Crib Wall: 1.5’ x 46’

Photo @ 50+96 looking back

50+45- 50+96

50+96- 51+14

Add Crib Wall: 3’ x 18’

51+14- 51+52

Re-dig Trail Upslope Obliterate switchback shortcut

51+52- 52+07

Switchback Add Steps: 5 Add Crib Wall: 2’ x 20’

Crib wall is on the down-slope of the upper leg of the switchback above the steps

Glen Falls Trail Assessment Log, Pkg #12- Solicitation Amendment 1 -Revised 7.9.10 Page 12

52+07 52+47

52+47- 52+88

Add Crib Wall: 3’ x 41’

Crib is below large pine tree and starts at blow down

52+88 57+49

Trail has rolling grade reversals along this section

57+49- 58+94

Trail widens to 6-8 ft Old road bed Re-establish existing grade dips: 5

58+94- 60+05

35% Grade Old Road Bed

Replace steps Add Steps: 38

8-10 ft wide terraces x 3 ft long with 4” of grade between risers

Photo @ 60+05 looking back

60+05- 66+79

Incised road bed with grades from 15 to 30% Remove berm where possible Add Grade Dip: 10

Glen Falls Trail Assessment Log, Pkg #12- Solicitation Amendment 1 -Revised 7.9.10 Page 13

66+79 Creek Crossing: 30 ft Add Stepping Stones on up-stream side of crossing

Trail continues approx another 200 yards to parking area, maintenance continues to end of trail.

END OPTIONAL ITEM

SECTION GLEN FALLS

TRAIL.

End of Trail Log

File details come from the government source that posted it. Updated .