Updated _GAOA Ideal Cove Trail_TrailLog_NoBridg_12032021_cj.pdf

Solicitation Amendment 1

KEY TO WORK ITEMS AND TERMS: 12/6/2021 cj

ABBREV. DESCRIPTION

AS AGGREGATE SURFACING

ASC AGGREGATE SURFACING WITH CORDUROY (RECYCLED PLANKS)

ASD AGGREGATE SURFACING WITH DITCH

BW-A BOARDWALK TYPE A

BW-B BOARDWALK TYPE B (STEP & RUN)

BWB BOARDWALK BRIDGE

CL CENTERLINE

CS CONCRETE STEP

MW MISCELLANEOUS WORK (SEE NOTES)

NW NO WORK

RA REST AREA

RL RETAINING LOG

SIGN-

POST

SIGNPOST

SOD STONE OPEN DRAIN

SP STONE PITCHING

SRS STONE RISER STEP

SRW STONE RETAINING WALL

WA WORK AREA

2). The WA value shown is in approximate linear feet (LF) from the beginning of the project or as referenced.

3). The Minimum AS Depth shown is the depth after placement and compaction.

GAOA IDEAL COVE TRAIL RECONSTRUCTION

TRAIL LOG

4). The quantities of steps/stones shown for Types CS and SRS are estimates given for the contractor's convenience only. The

GENERAL NOTES

1). The beginning of WAs are marked on the ground by wood stakes with the work area number written upon them. See Special Project Specifications, Section H for treatment of stakes during construction. Should a stake be missing, notify the Government for replacement prior to the commencement of work in that area, or provide replacement as approved by CO.

6). Where provided, depth to refusal is at WA end unless noted otherwise.

WORK AREA

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0 36 36 36 AS 4 4

USFS will locate at time of work. No stakes below 0+36. WA is on beach below Mean High Water (MHW). Clear beach grass and organic material to expose beach gravel. Shift large rocks aside to create unobstructed trail bed. Install 4" depth of beach gravel gathered from approved locations over existing gravel.

36 5 2 41 SRS 8 29 Use stones from adjacent beach.

41 30 30 71 AS 4 8

Install 4" depth of beach gravel gathered from approved locations. WA ends at approx. middle front of Trailhead Rest Area (RA). No reveg req'd on shoulders of trail.

71 1 97 RA 3

Station locations mark opposite ends of Saltwater Trailhead Rest Area (see drawings). Stationing on stakes does not indicate length of RA.

97 0 1 97 SIGNPOST Install double post trail map sign.

97 30 30 127 AS 10 2 At STA 0+97 trail exits Saltwater Trailhead RA. Remove 8" spruce at STA 1+19.

127 16 1 143 BWB 0

Install with a step up onto BWB from AS at STA 1+27 to level the bridge deck.

Approx. 5' span.

143 60 60 203 AS 10 13

New trail construction; skirt right side of skunk cabbage patch. Depth to sand approx. 1' throughout WA.

203 9 9 212 SP 24 Depth to sand approx.1.5'.

212 11 7 223 CS 8 45 Depth to sand at end of WA approx. 1.5'.

223 46 46 269 AS 10 7

Trail turns left; remove mossy log on right at beginning of WA if needed to make room for landing and bend in trail at top of CS. Depth to sand approx. 2' throughout WA.

269 2 1 271 SOD 0

Center structure to span center of water flow. Skunk cabbage throughout area;

approx. 2' depth to sand.

271 32 32 303 AS 10 2

Install trail in sweeping curve to intersect existing trail; follow centerline (CL) stakes. Depth to sand approx. 1' at WA end.

5). Directional references to "right" and "left" are given in relation to the trail centerline and assumes a direction of travel moving from saltwater up to the Bridge Junction Rest Area below Hill Lake.

actual quantities may vary and the contractor is responsible for verifying the actual quantities.

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Near 0+36 155 3+03 MW Demolish existing BW trail from top of beach to STA 3+03 abandoned by reroute; naturalize trail bed where visible from new trail location. Approx. 120 LF of boardwalk, and 35 LF of staircase with 3 landings.

303 24 24 327 AS 12 4

Bear to right to reduce curve. Remove dead 6" dia alder, lump of duff, & end of 20" dia log. Approx 14" depth to refusal.

327 52 52 379 AS 12 3

Build grade by following CL stakes to climb bank on right side to end at correct elevation to pass over tree roots in next WA. Acceptable alternative: install CS at end of WA. Approx 1' to refusal.

379 23 23 402 ASC 8 6

Block holes between tree roots and build trail over roots of 3 trees with underground stream running through roots.The next 500' of trail is very wet with similar ground type starting at 3+32. Approx. 2' to refusal.

402 101 101 503 BW‐B 6 to 8 Standing &/or running water throughout WA. Depth to sand/grave/rock varies between 1'‐3'.

503 78 78 581 BW‐B 6

Remove 10" hemlock to right at start of WA; shift CL to right through removed tree location to level out grade through WA.

581 51 51 632 BW‐B 2 Follow CL stakes to lessen radii of curves.

632 60 60 692 AS 12 1

692 2 1 694 SOD 0

694 38 38 732 AS 12 1

732 19 19 751 AS 12 6

751 2 1 753 SOD 0

753 20 20 773 ASD 12 6 Install 20' ditch adjacent to trail to drain into SOD in previous WA.

773 6 6 779 AS 12 6

779 23 23 802 BW‐A 5 max If 5% is unachievalbe, install BW‐B.

802 15 15 817 BW‐B 29 Step & run as needed; running slope not to exceed 6%.

817 100 100 917 BW‐B 8

Approx. 1.5' to refusal. At 8+56 shift CL to left approx. 2' and remove 9" hemlock.

917 91 91 1008 BW‐B 7

Approx. 2' to refusal. STA 10+08 located approx. 3' right of existing trail CL. New trail should sweep in a steady curve around 3' spruce (on left) to line up with bridge abutment at end of next WA.

1008 21 21 1029 BW‐B 7 Approx. 1.5' to refusal.

1029 16 1 1045 BWB 0 Approx. 1' to refusal. Approx. 15' span.

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1045 69 69 1114 AS 8 4 Follow CL stakes to right.

1114 2 1 1116 SOD 0

1116 29 29 1145 AS 8 4 Approx. 1' to refusal.

1145 20 1 1165 BWB 2

Place bridge with approx. 2% grade to provide 6"‐8" Step down onto AS at 11+65 end. Remove 3 small hemlocks from downstream side to improve view to creek. Approx. 18' span.

1165 24 24 1189 AS 8 3 Approx. 10" to refusal.

16 RL Install 16 LF retainer log on downhill side betw STA 11+65 and 11+82

1189 6 6 1195 BWB 2

Approx 2% grade to provide 8" max riser height at STA 11+95. Approx 1' to refusal. Approx 6' span.

1195 35 35 1230 AS 8 4 Approx. 12" to refusal

1230 5 1 1235 CS 25

Transition trail grade smoothly to meet bridge deck elevation. Approx. 8" to refusal.

1235 18 1 1253 BWB 2 2% max slope on bridge deck. Approx. 10" to refusal. Approx 18' span.

1253 60 60 1313 AS 10 2

CL shifts to right through dead 10" tree and up slight bank. Approx. 12" to refusal.

1302 1 1302 RA Install Stone Rest Area 1 (see drawings). OPTION ITEM 1 1313 100 100 1413 AS 10 5 14+13 located approx. 2' to right of edge of trail.

1413 28 28 1441 AS 10 1 Approx. 12" to refusal.

1441 41 41 1482 AS 10 10 Approx. 12" to refusal.

1482 14 1 1496 BWB 0 Approx. 12" to refusal; approx 14' span.

1496 55 55 1551 AS 10 5 Hug bank to right side; follow CL stakes. Approx. 12" to refusal.

1551 10 10 1561 AS 10 5 Approx. 12" to refusal. CL crosses existing trailfrom right to left.

10 RL Install retaining log on downhill side, approx 2' in height, 10 LF.

1561 18 18 1579 AS 10 7 Approx. 12" to refusal.

18 SRW Install on downhill side, height varies, 2'‐4'.

1579 112 112 1712 AS 10

Remove dead 2' dia forked tree to right near 15+79. Reroute trail to right (away from creek) as flagged. Remove rotten 24" hemlock to left of reroute (between existing trail and reroute); run trail between two hemlocks, bearing up‐slope slightly as flagged. Approx. 12" to refusal. Protect all SURVEYED PROPERTY BOUNDARY markers in this work area. See also Special Project Specifications, Section H.

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1712 100 100 1812 AS 10 0

Shift CL to right toward end of WA. Remove organic material near end of WA to achieve consistent grade. Approx. 12" to refusal.

1812 42 42 1854 BW‐A 1 Depth to refusal varies betw. 1'‐2'.

1854 100 100 1954 ASC 10 0 Depth to refusal varies betw. 1'‐2.5'.

1954 9 9 1963 AS 10 7 Approx. 12" to refusal.

1963 6 6 1969 AS 10 7 Preserve roots of large trees at end of WA.

6 SRW Install on downhill side, approx 4'‐5' in height.

1969 47 47 2016 AS 10 5 Shift trail to right into bank for a full bench trail bed. Approx. 12" to refusal.

2016 48 48 2064 AS 10 1

Near end of WA shift CL right between 3' dia dead tree on right and low hump of rotten stump on left; remove either or both. Approx. 12" to refusal.

2064 1 1 2065 AS 45 Install AS with tree root as step. Approx. 12" to refusal.

2065 68 68 2133 AS 10 0

Shift CL to right at start of WA as staked. Tie back into existing trail CL and STA 20+96. Approx. 12" to refusal.

2133 21 21 2154 AS 8 12 Large, loose rock at or near surface.

2154 29 29 2183 AS 8 2 Rock at surface or 6" down; some deeper pockets to rock 2' down.

2183 15 15 2198 AS 6 16 Rock at or near surface.

2198 21 4 2219 CS 6 19

Approx. 4 CS (or may use native stone if of sufficient size) with extended AS run between; at approx. STA 22+05 clear moss from large flat‐topped rock to right of trail for use as seating stone. Center an 8' length of level AS run on this rock with nearest CSs equidistant each side. Bump out AS surface to approx. 3' wide in front of seating stone; retain outside edge with edging stone or retaining log.

2219 11 11 2230 AS 10 4 Shift trail into bank for full bench trail. Approx. 1.5'‐2' to refusal.

11 RL Retain downhill side with log approx 18" dia, 18 LF.

2230 63 63 2293 AS 10 4

Full bench trail. Large rock at 22+45; shift rock downhill; place CL where rock is.

SOD or drain dip at 22+59. Take trail through rotten stump at end of WA.

Approx. 12" to refusal.

2293 23 23 2316 AS 10 10 Full bench trail.

2316 2 1 2318 SOD 0 10‐12" to refusal

2318 20 20 2338 AS 10 10

Full bench trail; shift trail into bank to right toward end of WA. Approx. 12" to refusal.

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2338 80 80 2418 AS 10 4

Approx. 1.5' to refusal. Shift trail to right throughout WA, ending adjacent to rootwad. Cut through organics and edge of rootwad to achieve even grade.

approx.

1 AS Install Rootwad Spur in front of large rootwad as shown in drawings.

2418 30 30 2448 AS 10 12 Approx. 1.5' to refusal.

2448 16 1 2464 BWB 2? 1 step down onto BW‐A at far end of bridge. Approx. 16' span.

2464 49 49 2513 BW‐A 6

Cut through mossy stump and dead snag at approx. 24+73. Approx. 2'+ to refusal.

2513 53 53 2566 BW‐A 4 Approx. 2'+ to refusal.

2566 89 89 2655 AS 10 2 Trail enters grassy meadow.

2594 1 2594 RA Install spur trail and Stone Rest Area 2 (see drawings). OPTION ITEM 1

2655 2 1 2657 SOD 0

2657 9 9 2666 AS 10 2

2666 85 85 2751 AS 10 0

2751 40 40 2791 AS 10 6 Approx. 12"‐18" to refusal.

2791 12 1 2803 BWB 0 Approx. 12" to refusal. Approx. 12' span.

2803 16 16 2819 AS 10 15 Approx. 14" to refusal.

2819 52 52 2871 AS 10 3 Approx. 12"‐18" to refusal.

2871 37 37 2908 AS 0 Even out grade between 28+71 and 29+31 to achieve 12% grade throughout.

2908 2 1 2910 SOD

2910 12 12 2922 ASD 10 12 Ditch 12' uphill of SOD on right side to drain into SOD.

2922 9 9 2931 AS 10 12 Even out grade between 28+71 and 29+31 to achieve 12% grade throughout.

2931 2 1 2933 SOD 0

Remove 12" live cedar to right. Naturalize stump with dirt and moss. Approx 18" to refusal.

2933 3 3 2936 AS 10 0 Landing at base of SP in next WA. Slope to drain.

2936 12 12 2948 SP 29 Ditch along right side of SP to SOD at 29+31. Depth to refusal approx. 18" 2948 2 2 2950 AS 10 0 Landing between bridge and SP. Slope to drain. Approx. 12" to refusal.

2950 11 1 2961 BWB 0‐3% 1.5'‐2' to refusal. Slope bridge as necessary to fit site, 3% max. Approx. 11' span.

2961 12 12 2973 AS 15 Approx. 1.5' to refusal.

2973 11 1 2984 BWB 3 Approx. 2' to refusal. Approx. 11' span.

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2984 30 16 3014 CS 43

Begin Reroute trail CL up grade to left as staked. Preserve live 20" cedar on left side. Curve steps toward 15' high stump. Approx. 12" to refusal.

3014 35 35 3049 AS 8 13 6"‐12" to rock and sand.

3049 17 17 3066 AS 8 2

Approx. 1' to rock in places. Remove stump on left side. Maintain constant grade.

3066 26 26 3092 AS 10 14

Keep 8" hemlock to left; curve to right of its roots. Remove portion of stump on left as needed. Use live roots to retain AS on left. End Reroute: Tie in with existing trail CL at end of WA.

2984 96 MW

Demolish approx. 96' BW steps and step‐&‐run trail; naturalize abandoned trail bed where visible from new trail.

3092 31 31 3123 AS 10 1 2' to refusal.

3123 2 1 3125 SOD 0 2' to refusal.

3125 17 17 3142 ASD 10 3

2' to refusal. Install approx. 5 LF ditch on right side to SOD at 31+23; ditch below SOD to daylight, approx. 15 LF.

3142 8 8 3150 AS 10 3 2' to refusal.

3150 24 24 3174 AS 10 11 2' to refusal.

3174 2 1 3176 SOD 0 Ditch as req'd to drain toward SOD.

3176 11 11 3187 SP 21 Generally 12" to refusal; rocks near surface in places 3187 2 2 3189 AS 10 0 Landing between SP & SOD; slope to drain. Approx. 12" to refusal.

3189 2 1 3191 SOD 0

Ditch as req'd to drain slope on right side of trail toward SOD, approx 27LF. May require removal of mossy log at top of slope.

3191 34 34 3225 AS 10 9 Approx. 18" to refusal.

3225 100 100 3325 AS 10 3 Depth to refusal varies, 1'‐2'. Overall desired grade 3%.

3325 47 47 3372 AS 10 1

3372 13 4 3385 CS 30

3385 7 7 3392 AS 10 15

3392 14 14 3406 SP 28

3406 11 11 3417 AS 10 15

3417 12 8 3429 CS 36 Approx. 12" to refusal.

3429 12 12 3441 AS 10 6 Protect large tree and roots to right. Approx 2' depth to refusal.

3441 17 1 3458 BWB 5

Elevate abutment and install 1‐2 steps on far side of bridge to level. Approx 2' depth to refusal. Approx. 17' span.

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3458 33 33 3491 AS 10 9 Approx 1.5' depth to refusal.

3491 31 31 3522 BW‐B 10

3522 93 93 3615 BW‐A 1

Reroute trail to right as staked. End Reroute: Rejoin existing trail bed at 35+75.

Cut through base of stump at 35+75 to maintain grade.

3522 53 MW

Demolish approx. 53' of BW trail; naturalize abandoned trail bed where visible from new trail.

3615 43 43 3658 BW‐A 6

Curve trail slightly as needed to avoid live tree roots. Cut through dead tree roots at 36+15. Depth to refusal varies; 2'‐3'.

3658 18 18 3676 BW‐A 1

3676 13 1 3689 BWB 0 Approx. 12" depth to refusal. Approx. 13' span.

3689 21 21 3710 BW‐B 19 Step and run with drainage on left (existing).

3710 64 64 3774 BW‐A 5

3774 50 50 3824 AS 10 3 Approx. 1'‐2' depth to refusal.

3824 75 75 3899 BW‐A 3 Smooth out sharp bends in current trail CL as staked.

3899 80 80 3979 BW‐A 7 Curve trail to follow existing CL. Approx. 2' to refusal.

3979 90 90 4069 BW‐A 4 Approx. 2' to refusal.

4069 9 2 4078 CS 18 Step and run; maintain 4%‐5% grade on AS surfaces between CS.

4078 57 57 4135 AS 10 3 End of WA located approx. 4.5' from near side of Hill Lake Creek bridge.

4135 0 1 4135 SIGNPOST Install double signpost trail map sign were approved by CO.

Total Dist: 4088 LF