Helena Portage Trail VSS Bid Drawings 2 of 2 and Permits.pdf

PDF 2 MB Posted Mar 8, 2017

Attached to: PMAA-2017-SEAR-PORTAGE TRAIL IMPROVEMENTS - HELENA BOATCHUTE
Solicitation number: DQ1 PMAA 2017000951 4
Issued by: Cheyenne County, Denver City, Colorado

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Written by GovTribe AI · Mar 14, 2026

Helena Boat Chute Portage Trail Improvements

This file contains bid drawings, technical specifications, and permit documentation for the Helena Diversion Portage Trail Improvements project administered by Colorado Parks and Wildlife (CPW) at the Arkansas Headwaters Recreation Area near Buena Vista, Colorado. The project scope includes constructing a portage trail with boulder retaining walls, replacing and repairing pedestrian aggregate trails, installing in-channel boulders for eddy assistance, protecting riverbanks, and relocating rock stairs. The work encompasses site access and staging, portage trail surface construction with options for aggregate or flat boulder surfaces, trail entrance enhancements with multi-boulder retaining walls, channel boulder placement at two locations, and bank protection measures. The pre-bid conference was scheduled for Tuesday, February 28, 2017, at 10:30 a.m., with bid opening on Thursday, March 9, 2017, at 1:30 p.m. The contract includes base bid items such as mobilization, earthwork, aggregate and rock placement, geotextile fabric installation, and seeding and mulching, with alternate bid items for flat boulder trail surface replacement. The project site involves work on Colorado Parks and Wildlife property and adjacent private property (Lot 7), requiring coordination with the property owner and CPW representatives.

The project is funded through Colorado Parks and Wildlife Fund 1720, Appropriation Code PC002INFP, Project ID AR-501. No Section 404 permit from the U.S. Army Corps of Engineers is required, as the work qualifies as exempt agricultural repair and maintenance work under the Clean Water Act exemption, confirmed by correspondence dated June 25, 2015. The contractor is responsible for obtaining all necessary permits, insurance, and bonds as part of mobilization costs. Key requirements include compliance with Colorado Water Quality Control Act standards, erosion and sediment control measures, equipment cleaning for aquatic concerns, and the submission of as-constructed and record documents. Specific material specifications require dense, sound rock with bulk specific gravity not less than 2.5, and geotextile fabric meeting AASHTO standards. The contractor must maintain temporary pollution control measures, avoid disturbance to designated existing trees and embankments, and coordinate all work through the CPW Project Manager or authorized representative, with strict prohibitions on using private property resources or accepting direction from property owners.

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Other files

File	Type	Posted
Helena Portage Trail VSS Bid Documents and Specifications.pdf	PDF	Mar 8, 2017
Addendum No 2.pdf	PDF	Mar 8, 2017
CPW GRCs.pdf	PDF	Mar 8, 2017
Helena Portage Trail VSS Bid Drawings 1 of 2.pdf	PDF	Mar 8, 2017
PreBid Sign In Sheet Helena boat chute trail.pdf	PDF	Mar 8, 2017
PO_Terms_&_Conditions_1-1-09.pdf	PDF	Mar 8, 2017
Addendum No 1.pdf	PDF	Mar 8, 2017

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SHED

FIRE

PIT

GRAVELED DRIVEWAY

10.00'

20' MAINTENANCE AND

UTILITY EASEMENT

25'

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LOT 8

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LOT 7

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LOT 6

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LOT 8

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LOT 7

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LOT 6

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TRACT C

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CHAFFEE CNTY RD 313

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ARKANSAS RIVER

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#5 REBAR W/1.25" PLASTIC CAP, LS 2690

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#5 REBAR W/2" ALUM. CAP, LS 2690

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TEMPORARY CONSTRUCTION EASEMENT

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TEMPORARY CONSTRUCTION EASEMENTS

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PROJECT NO.

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AHRA - BUENA VISTA, CO

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CONSTRUCTION

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HELENA DIVERSION PORTAGE TRAIL

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SITE ACCESS & STAGING

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OF 6

AutoCAD SHX Text PROJECT NOTES: 1. General: General: A. Easement shown is for reference only and are not to Easement shown is for reference only and are not to be used for legal purposes. Easement is currently (February 6, 2017) under negotiation with Lot 7 owner. B. Temporary construction easements may be used by Temporary construction easements may be used by contractor for construction and staging activities. No area outside of these easements shall be disturbed and all disturbed areas shall be restored per the project documents C. Equipment and material access to the Helena Boat Equipment and material access to the Helena Boat Chute drops and concrete Helena Ditch diversion structure is prohibited. D. Contractor and sub-contractor personnel are strictly Contractor and sub-contractor personnel are strictly prohibited from requesting or using any sanitary facilities, water, electrical power, or any other such resources that belong to the private residences. Access for private property owners to their driveways and property shall not be inhibited. E. Work shall only be directed by CPW Project Manager or Work shall only be directed by CPW Project Manager or authorized CPW project representative. Private property owners shall not direct work or request any additional work be undertaken by the CPW contracted general contractor. Any such requests shall be immediately communicated to the Project Manager by the general contractor. F. No existing boulders on Lot 7 property shall be used in No existing boulders on Lot 7 property shall be used in construction. 3. Lot 7 Pedestrian Aggregate Trail Lot 7 Pedestrian Aggregate Trail A. The existing pedestrian aggregate trail shall be removed The existing pedestrian aggregate trail shall be removed in its entirety and replaced in the same configuration and per Detail. B. Removed trail material may be used as backfill around Removed trail material may be used as backfill around portage trail boulders or any other locations as accepted by CPW Project Manager or authorized project representative. C. New aggregate trail material shall be crushed and New aggregate trail material shall be crushed and match existing trail material's gradation. D. New aggregate trail material shall be uniform color. New aggregate trail material shall be uniform color. 4. Reuse of Existing Boulders Reuse of Existing Boulders A. Contractor shall make best efforts to reuse on-site Contractor shall make best efforts to reuse on-site materials, including boulders, cobbles, gravels, and soils where materials meet project specifications and project's design intent. B. If existing grouted boulders are to be reused, all grout If existing grouted boulders are to be reused, all grout shall be removed from any visible surfaces. C. Lot 7 owner shall have first right of refusal for any Lot 7 owner shall have first right of refusal for any material not utilized on the project. Coordinate with property owner and CPW Project Manager to stockpile material on Lot 7.

RE. Boulder Wall and Portage Trail Detail.

Compacted Native Soil/Sands/Cobbles

Approx. 6' (B72) Dia. Rounded Boulders Beyond. RE Boulder Wall and Trail Detail

Approx. 4' (B48) Dia. Rounded Boulders Beyond. RE Detail 9C

Salvage Natural Stone Stair Treads To Reuse For Relocated Stair. Maintain Current 8" Riser Height And 12" Min. Tread

Varies - 6' Min To 8' Max

Exist. Grouted Cobble And Boulder

Embankment Do Not DisturbRock Stair Detail

Not to Scale

Flat Boulder Trail Surface Alternative

Flat Boulder Trail Suirface Alternative:

3'-4' (B36-B48) Dia. Factured Boulders (Typ) Flat Side Up. Boulders To Be Placed As Close As Possible to Each Other.

Base Material And Voids Shall Be Excavated Existing In Place Gravel Recompacted Prior To Path Surface Boulder Placement. Excavate And Replace To Depth As Shown.

12' Min.

Exist. Grouted Cobble And

Boulder Embankment Do

Not Disturb

Replace And Compact Native Fill In 8" Lifts. Top 1' Shall Be Uncompacted

Native Topsoil Which Should Be Separately

Stockpiled Prior To Excavation For Wall.

5' Min.

1' Min. Emb.

Compacted Native Soil/Sands/Cobbles

6" Min.

Approx. 6' Dia.

Rounded Boulders

Placed With Bulk Of Mass Into Earth As

Shown.

Fill All Void Areas Between And Under

Boulders With D50 6-Inch (R6) Rip Rap. Hand

Place Where Necessary.

Place Geotextile Behind Boulders/Rip Rap To Prevent Soil

From Migrating to Trail.

2" Max.

Portage Trail and Single Stack Large Boulder Retaining Wall Detail

Not to Scale

Do Not Disturb Fire Pit

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AHRA - BUENA VISTA, CO

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CONSTRUCTION

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HELENA DIVERSION PORTAGE TRAIL

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PORTAGE TRAIL & WALL

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AutoCAD SHX Text Photos indicate existing conditions. Notes directly to the right of each photo describe the work to be completed. Reference the details as indicated within these notes.

AutoCAD SHX Text PORTAGE TRAIL AND ASSOCIATED BOULDER WALL 1. Do not disturb boulder/cobble embankment on eastern edge Do not disturb boulder/cobble embankment on eastern edge of trail (borders the Arkansas River). Any damage occurring to this area shall be immediately repaired to match existing. 2. BOULDER WALL (RE. Portage Trail and Boulder Wall Detail) BOULDER WALL (RE. Portage Trail and Boulder Wall Detail) A. Remove existing boulders which currently bound west side Remove existing boulders which currently bound west side of trail. Reuse where boulder size meets design criteria/intent and as directed by CPW representative. Any unused boulders shall be placed on Lot 7's property as directed by CPW project representative. B. Face surface of new retaining wall shall be aligned with Face surface of new retaining wall shall be aligned with CPW/Private property line. Boulder placement shall be within permanent easement. C. Backfill and compact behind retaining wall to full height of Backfill and compact behind retaining wall to full height of newly placed boulders per detail. 3. PORTAGE TRAIL SURFACE BID ITEMS PORTAGE TRAIL SURFACE BID ITEMS A. For the base bid, the existing aggregate trails surface For the base bid, the existing aggregate trails surface shall remain in place between the boat take-out steps and the grouted rock trail surface at the boat take-out. This is no bid item for this work. The trail shall be widened to accommodate proposed trail width with same type/gradation aggregate as existing trail. This shall be This shall be This shall be included in the Large Boulder wall bid item as described on the Bid Schedule and unit price description. B. Alternate bid item shall be to replace the existing Alternate bid item shall be to replace the existing aggregate trail as described in 3.A. above with large flat boulders per details. 4. FLAT BOULDER TRAIL SURFACE (RE. Portage Trail and Boulder FLAT BOULDER TRAIL SURFACE (RE. Portage Trail and Boulder Wall Detail) A. Remove aggregate trail surface and replace with large flat Remove aggregate trail surface and replace with large flat faced boulders per details. Salvage aggregate material to reuse as base course and fill material between newly placed boulders. B. Replace existing trail surface with flat face boulders per Replace existing trail surface with flat face boulders per details. Maintain current trail elevations with new surface. C. At upstream portage trail entrance, widen west side of trail At upstream portage trail entrance, widen west side of trail to intersect the new boulder wall to be constructed which is described on plan sheet 6 and detail sheet 8 and 9. Match current grade of east side of trail in this area. 5. EXISTING GROUTED TRAIL SURFACE (RE. Portage Trail and EXISTING GROUTED TRAIL SURFACE (RE. Portage Trail and Boulder Wall Detail) A. Remove grouted in boulder surface and replace with large Remove grouted in boulder surface and replace with large boulders per standard trail surface. Salvaged boulders may be reused provided boulder size meets design criteria/intent and as directed by CPW representative. All grout shall be removed from boulder that are to be reused. 3. ROCK STAIRS (RE. Rock Stair Detail) ROCK STAIRS (RE. Rock Stair Detail) A. Remove existing boulders which currently bound the private Remove existing boulders which currently bound the private stair on both sides. Reuse of these boulders is allowed for the river work portion of this project as necessary. B. Relocate stair base by pushing it further into private Relocate stair base by pushing it further into private property to intersect newly relocated and enlarged portage trail retaining wall front face. C. Salvage existing natural stone stair treads and replace Salvage existing natural stone stair treads and replace them at relocated stair position to maintain current rise/run of the existing stairs. Add flat natural stones as necessary at top of stairs to maintain current rise/run if necessary. D. Reconstruct the two walls bounding each side of the stairs Reconstruct the two walls bounding each side of the stairs utilizing larger 3 (R36) to 4 (R48) foot diameter natural stones. Top surface of these two boundary walls shall approximately coincide with the top surface of the newly relocated portage trail retaining wall.

AutoCAD SHX Text Existing Grouted Boulder Portage Trail

AutoCAD SHX Text Existing Rock Stairs

AutoCAD SHX Text Existing Portage Trail Looking North

Portage Trail and Boulder Wall Profile

1'-0"

2'-0" 1'-0" Min.

Emb. Typ.

River Right Cobble And Boulder

Embankment (E)W.S. At Construction Varies

Boulder Matching Top Of Footing

Grouted Boulder Center Structure (E)

River Bed Below W.S.

Concrete Apron Beyond (E)

3' (B36) Dia. Fractured Boulders (Typ)

2' (B24) Dia.Fractured Boulders (Typ)

Approx. 12'

Footer Rocks.

Extend Trail to New Retaining Wall - Width

Varies Install Per Trail Surface

Detail and Notes, Match Exist. Rock

Steps Dimensions as Feasible

Exist. Trail - Do Not Disturbe

5'-6' (B60-B72) Angular or Fractured Face Boulders (Typ) Flat Surfaces On River Facing Side

2' Min.

3'-4' (B36-B48) Angular or Fractured Face Boulders (Typ) Flat Surfaces On River Facing Side

2'-3' (B24-B36) Angular or Fractured Face Boulders (Typ)

Flat Surfaces On River Facing Side

2' (B24) Angular or Fractured Face Boulders (Typ)

Flat Surfaces On River Facing SideReplace And Compact Native Fill In 8" Lifts. Top 1' Shall Be

Uncompacted Native Topsoil Which Should Be Separately Stockpiled

Prior To Excavation For Wall.

Fill All Void Areas Between And Under Boulders With D50

6-Inch (R6) Rip Rap. Hand Place Where Necessary.

Place Geotextile Under and Behind Boulders/Rip

Rap To Prevent Soil From Migrating to Trail.

Geogrid (Typ.)

Extend 8' Into Earth

Maximum 3' Vertical Grid

Spacing

Varies - 9'-0" Max.

From Trail Low Point

Sharply Tapering Down Channel Boulder #2 Location

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AutoCAD SHX Text Notes: 1. Place excavated cobbles at leading Place excavated cobbles at leading edge drop structure. 2. Boulders shall be placed as tightly Boulders shall be placed as tightly as possible together to minimize gap size. Place smaller cobbles and surplus gravel between remaining voids between larger boulders.

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AHRA - BUENA VISTA, CO

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CONSTRUCTION

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HELENA DIVERSION PORTAGE TRAIL

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TRAIL ENTRANCE & UPPER RIVER

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AutoCAD SHX Text Entrance Boulder Wall and Trail Notes: 1. Remove existing boulders on CPW property. No rock is to be moved from Remove existing boulders on CPW property. No rock is to be moved from private property. Salvaged boulders may be used in new new construction provided they meet project's specifications and design intent. 2. Construct new, near-vertical dry stacked, non-grouted, angular or Construct new, near-vertical dry stacked, non-grouted, angular or fractured face native boulder retaining wall with front wall face at CPW/Private property boundary. Flattest boulder faces, when possible, shall be oriented toward the river facing side of the retaining wall. Newly constructed retaining wall at portage trail upstream entrance shall tie into the enlarged and relocated retaining wall built along the length of the portage trail. Top of wall elevation shall be tie into portage trail path retaining wall in elevation and rise from the path surface as wall progresses upstream to termination point near river spur 2 where a taper back to the spur elevation shall occur. 3. Place rip-rap in annular space around and between boulders per details. Place rip-rap in annular space around and between boulders per details. Backfill remaining area with soil and compact behind all retaining walls in 8 inch lifts to the level of the newly constructed retaining wall. Top lift of this backfill shall be loosely placed to accommodate native shrubs/grasses. 4. Reseed fill are behind retaining wall with native grasses mixture. Reseed fill are behind retaining wall with native grasses mixture. 5. Portage trail at entrance area shall be widened up to the newly Portage trail at entrance area shall be widened up to the newly constructed retaining wall base and constructed per portage trail detail.

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AutoCAD SHX Text In-Channel Boulders, Portage Entrance & Drop Protection

AutoCAD SHX Text All Existing Trees To be Undisturbed

AutoCAD SHX Text CHANNEL BOULDER NOTES: 1. Channel Boulders shall be installed at two locations Channel Boulders shall be installed at two locations to provide small eddies to assist boaters at the portage trail take-out. Two to three fractured 4' (B48) to 5' (B60) diameter boulders, with footer boulders, per site shall be placed within the channel as directed by CPW Project Manager or authorized representative. 2. Boulders shall be installed approximately 2 feet Boulders shall be installed approximately 2 feet above water surface as directed by CPW Project Manager or authorized representative. 3. Footer boulders shall be placed to provide a stable Footer boulders shall be placed to provide a stable foundation for surface boulders. Typically footer boulders shall be buried in the channel bottom and not seen when the structure is complete. All surface boulders shall require footer boulders and shall be omitted only at the discretion of CPW Project Manager or authorized representative. 4. Contractor shall anticipate that handling individual Contractor shall anticipate that handling individual rock after initial placement will be required to achieve desired water flow pattern. 5. Reuse of boulders salvaged from other demo areas Reuse of boulders salvaged from other demo areas of the project site, with exception to those with grout attached is allowed.

AutoCAD SHX Text Approximate Upstream Channel Boulder Location #1

AutoCAD SHX Text Approximate Downstream Channel Boulder Location #2

AutoCAD SHX Text Upper Boat Chute Boulder Reinforcement

AutoCAD SHX Text Scale: N.T.S.

AutoCAD SHX Text Portage Trail Entrance Path and Multi-Boulder Retaining Wall

Scale: N.T.S.

2'-0" Min.

Approx. 7'

Approx. 9'

New Cobble - 18" Min. Depth Salvage From River Bed As

Directed By CPW Project Manager

4' - 5' (B48-B60) Boulder 3' Dia. (B36) Boulders (Typ)

River Bed Below W.S.

W.S. At Construction Varies

Bench Created By Erosion (Remove)

Exist. Cobbles - Leave In Place

Exist. Grouted Boulder Structure

Reconstructed Portage Trail Surface

1'-0" Min. Typ.

W.S. At Construction Varies

Approx. 7'-0" 3' (B36) Fractured Face Or Angular Boulders (Typ) At Base.

2' Min.Dia. (B24) Factured Face Interlocking Boulders. Match local boulder appearance.

River Bed Below W.S.

1'-0" Max.

Approx. 7' -0"

±12'

3" Min.

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AutoCAD SHX Text Example: Original River Left Bank

AutoCAD SHX Text Scale: N.T.S.

AutoCAD SHX Text East Bank (River Left) Repair

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AutoCAD SHX Text Notes: 1. Boulders shall be placed as tightly as possible together. Place smaller cobbles and any surplus gravel between remaining voids between larger boulders.

AutoCAD SHX Text End Of Portage Trail

AutoCAD SHX Text Weed Block Landscape Fabric

AutoCAD SHX Text Trail Aggregate Re. General Notes

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AHRA - BUENA VISTA, CO

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CONSTRUCTION

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HELENA DIVERSION PORTAGE TRAIL

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BANK PROTECTION AND PUT-IN

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AutoCAD SHX Text Portage Trail Downstream Put-In & River Right Bank Protection

AutoCAD SHX Text Scale: N.T.S.

AutoCAD SHX Text River Put-In Rock Ramp

AutoCAD SHX Text Note Angular Rock Used Between Boulders

AutoCAD SHX Text Example Boulder Retaining Wall

AutoCAD SHX Text Scale: N.T.S.

Lot 7 Trail Replacement

AHRA - HELENA BOAT CHUTE PORTAGE TRAIL IMPROVEMENTS

DIVISION III – PERMITS

FUND 1720

APPR. CODE PC002INFP

PROJECT I.D. NO. AR-501

PRE-BID CONFERENCE: Tuesday, February 28, 2017 at 10:30 am

BID OPENING: Thursday, March 9, 2017 at 1:30 pm

(Page Intentionally Left Blank)

TABLE OF CONTENTS

AHRA - HELENA BOAT CHUTE PORTAGE TRAIL IMPROVEMENTS

CPW Project No.: AR-501

US Army Corps of Engineers 404 Permit Exemption

6/25/2015 State.co.us Executive Branch Mail - AHRA Additional Work https://mail.google.com/mail/u/0/?ui=2&ik=6d8022794c&view=pt&search=inbox&th=14e274b60e936ad5&siml=14e274b60e936ad5&siml=14e2ae4ca2e7ef0b&si… 1/3

Brindisi - DNR, Tony <tony.brindisi@state.co.us>

AHRA Additional Work 3 messages

Brindisi - DNR, Tony <tony.brindisi@state.co.us> Wed, Jun 24, 2015 at 2:38 PM To: van.A.Truan@usace.army.mil

Hi Van, Thanks for speaking with me again this afternoon regarding this project.

Again, I am basically just looking for an email from you stating roughly that we can go ahead and perform the work needed to the subject area under the same agricultural exemption that was provided for the first phase of this project. The work that we are proposing now is really maintenance and some improvements to the recently constructed portage trail and diversion ditch because certain areas aren't performing as well as originally anticipated. We are planning to remedy the issues observed.

I believe this work should still fall under the same 404 exemption because it really is just repair work, but if you could I'd really appreciate your review and perhaps an email that I can have for my file indicating that the original exemption still applies.

I have the original letter referencing Action No. SPA‐2013‐00113‐SCO. If you would like that forwarded for review, please let me know.

Thanks for helping out on this, Tony

Tony Brindisi, PE Design Engineer / Project Manager

O 303-291-7387 | C 720-822-8532 | F 303-291-7108 6060 Broadway, Denver, Colorado 80216 tony.brindisi@state.co.us | www.cpw.state.co.us

Truan, Van A SPA <Van.A.Truan@usace.army.mil> Thu, Jun 25, 2015 at 7:25 AM To: "Brindisi - DNR, Tony" <tony.brindisi@state.co.us>

Tony, As we discussed, the repair work on the agricultural intake structure on the Arkansas River near Buena Vista is exempt from our regulations, thus a Section 404 permit is not required from the Corps of Engineers.

If you need anything else, let me know.

Van

Van Truan mailto:tony.brindisi@state.co.us tel:720-822-8532 tel:303-291-7108 tel:303-291-7387 http://www.cpw.state.co.us/

AHRA - HELENA BOAT CHUTE PORTAGE TRAIL IMPROVEMENTS

FUND 1720

APPR. CODE PC002INFP

PROJECT I.D. NO. AR-501

PRE-BID CONFERENCE: Tuesday, February 28, 2017 at 10:30 am

BID OPENING: Thursday, March 9, 2017 at 1:30 pm

BID SCHEDULE AND UNIT PRICE DESCRIPTIONS

DIVISION I – SPECIFICATIONS

CONTRACTOR RESPONSIBILITY:

GENERAL CONDITIONS:

COLORADO PARKS & WILDLIFE

AHRA - HELENA BOAT CHUTE PORTAGE TRAIL IMPROVEMENTS

FUND 1720

APPR. CODE PC002INFP

PROJECT I.D. NO. AR-501

PRE-BID CONFERENCE: Tuesday, February 28, 2017 at 10:30 am

BID OPENING: Thursday, March 9, 2017 at 1:30 pm

SECTION 01310 - CONSTRUCTION SCHEDULES

SECTION 01720 – AS-CONSTRUCTED AND RECORD DOCUMENTS

I. Payment for As-Constructed and Record documents shall not be made as a line item but shall be included in Mobilization.

Refer to Section 01300 – Submittals, for requirments. Final payment will not be made until As-Constructed and Record documents are received and accepted as complete by the Project Manager.

5. MAINTENANCE OF DOCUMENTS:

I. Store documents in clean, dry area seperate from documents used for construction.

II. Documents shall be made available for inspection by Project Manager upon request.

6. RECORDING:

I. The Project Manager will provide the contractor one set of design drawings and specifications to record information.

II. Label each drawing sheet “AS-CONSTRUCTED” and cover sheet of specifications in neat large printed letters.

III. Record information concurrently with construction progress.

A. Do not backfill work until required information is recorded.

B. Use dark pen or pencil. Ink shall not be water based and lettering shall be legible and not subject to easy smearing.

IV. Mark drawings to record actual construction.

A. Field dimensions, elevations, and details.

B. Changes made by Project Manager in approved modifications.

C. Details not on original drawings.

D. Horizontal and vertical locations of underground facilities (pipelines, electric line, valves, fittings, etc.) and appurtenances referenced to a minimum of two permanent surface improvements or project coordinates/datum.

AHRA - HELENA BOAT CHUTE PORTAGE TRAIL IMPROVEMENTS

FUND 1720

APPR. CODE PC002INFP

PROJECT I.D. NO. AR-501

PRE-BID CONFERENCE: Tuesday, February 28, 2017 at 10:30 am

BID OPENING: Thursday, March 9, 2017 at 1:30 pm

AHRA - HELENA BOAT CHUTE PORTAGE TRAIL IMPROVEMENTS

FUND 1720

APPR. CODE PC002INFP

PROJECT I.D. NO. AR-501

PRE-BID CONFERENCE: Tuesday, February 28, 2017 at 10:30 am

BID OPENING: Thursday, March 9, 2017 at 1:30 pm

Helena Portage Trail Unit Price Descriptions.pdf

BASE BID ITEMS

Bid Item 1 – Mobilization

404 Permit.pdf

State Email 1 - NO 404 NEEDED 6-24-2015

CORPS Approval - Helena Project

Helena Portage Trail FINAL dwgs.pdf

Cover Sheet

Sheets and Views

1 - Cover Sheet

2-Site Map

Sheets and Views

2 - Site Map

3-Site Access & Staging

Sheets and Views

3 - Site Access & Staging

4-Portage Trail Wall & Stairs

Sheets and Views

4 - Portage Trail Wall & Stairs

5-Trail entrance & Upper River

Sheets and Views

5 - Trail entrance & Upper River

6-Bank Protection & Put-In

Sheets and Views

6 - Bank Protection & Put-In

Technical Specifications.pdf

SECTION 02050 - MOBILIZATION

I. Payment for mobilization will be made on a contract lump sum basis as shown in the Bid Schedule. The lump sum price bid will be paid once only and shall include complete mobilization and demobilization regardless of the number of times the equipme...

II. Mobilization shall include the obtaining of all permits, insurance, and bonds, and the moving onto the site of all plant and equipment; for furnishing and erecting plants, temporary buildings, and other construction facilities; all as required for...

A. Moving onto the site of all the Contractor's plant and equipment required for the first month's operations.

B. Installing temporary construction power and wiring.

C. Establish fire protection system.

D. Provide on-site sanitary facilities as specified.

E. Arrange for and erect the Contractor's work and storage area.

F. Submit all required insurance certificates and bonds.

G. Have the Contractor's superintendent at job site full time or available by mobile phone.

H. Construction schedule.

I. List of subcontractors.

J. General cleanup of the project area.

K. Shop drawings and product submittals.

L. Equipment Cleaning for Aquatic Concerns (see General Requirements Section 01010, under Protection and Safety Practice)

M. Maintaining and submitting As-Constructed and Record documents per specifications

SECTION 02200 - EARTHWORK

I. UStrippingU:

II. UExcavationU:

III. UBlading and ShapingU:

IV. UDewateringU:

V. UWaste MaterialU:

I. UClassification of SoilsU: ASTM D 2487 and ASTM D 2488.

II. UDensity Relations of SoilsU: Maximum Dry Density as determined by ASTM D 698 or AASHTO T 99 (Standard Proctor).

III. UDensity for Sands and GravelsU: Relative Density Method ASTM D 4253 and ASTM D 4254.

IV. UIn-place Density DeterminationU: Nuclear Method ASTM D 2922

I. Quality control for earthwork shall be provided by the contractor. The Project Manager may, at any time, access the work area to perform quality control testing. Contractor shall allow access for such testing. No payment or claim will be granted...

II. Compaction testing may not be required if the Project Manager accepts contractor’s compaction effort.

III. Project Manager reserves the ability to fail substrate or fill compaction results observed. If this occurs, fill or substrate (depending which has failed) within the failed area shall be subjected to additional compaction, moisture conditioning ...

I. UGeneralU:

II. UStripping and ObstructionsU:

A. Remove on-site boulders and stockpile on site for repurposing during the construction phase of the wall and trail.

B. As indicated on the plan documents, existing larger trees shall not be removed or otherwise disturbed during stripping or construction operations.

I. UClassification of ExcavationU:

A. UCommon ExcavationU:

II. UDisposal of Surplus and/or Waste MaterialU:

III. URestoration of Excavated Area

I. UCompacted FillU:

A. ULines and GradesU:

B. UQuality AssuranceU:

II. UImported Fill

In addition, this material shall have a liquid limit not exceeding 35 and a plasticity index of not over 5 when determined in accordance with AASHTO T 89 and AASHTO T 90 respectively.

III. UBlading and ShapingU:

IV. UDensityU:

V. USoil ContentU:

A. Material shall be free of sod, brush, roots, other decomposable material, and stones larger than 6 inches. Should any undesirable material be placed in the fill, remove prior to compaction. No frozen material shall be accepted or used.

B. Impervious Fill, if used, shall be silt or clay according to the Unified Soil Classification System.

VI. UPlacementU:

VII. UMoisture ControlU:

VIII. UCompaction ProcessU:

A. UGeneralU:

B. ULightly Compacted FillU:

SECTION 02264R - AGGREGATE AND ROCK

SECTION 02264R – AGGREGATE AND ROCK

I. UBoulders and Riprap PropertiesU:

A. Rock shall be dense, sound and free of cracks and seams or other defects

B. Bulk specific gravity not less than 2.5, according to ASTM D 6473.

C. The bulk density shall be 1.3 tons/cubic yard or greater.

D. Absorption not more than 2%, according to ASTM D 6473.

E. Soundness: weight loss in 5 cycles not more than 10 percent when sodium sulfate is used or 15 percent when magnesium sulfate is used, according to ASTM D 5240.

F. Color shall be compatiable with native river rock at the project site and be approved by the Project Manager prior to delivery to the project site. Other color may be substituted but will require Project Manager’s acceptance prior to Bid submittal.

II. URock BoulderU:

A. Rock boulders are defined as rock greater than 22-inches as measured along the shortest axis. Rock shall be “shot” at the quarry and shall be angular-rectangular in shape. Rounded rock or rock that is overly angular (i.e. rip-rap shape) is not accp...

B. Rock shall be the type designated on the drawings and shall conform to the following:

III. URiprap:

A. Riprap is angular rock to subrounded in shape as described by ASTM D 2488. Neither the breadth nor thickness of any piece of rock shall be less than 2/3 of its length. The breadth (B), thickness (T) and length (L) axes or planes are described as:

L - longitudinal axis, represents the center line (axis) connecting the most distant points (faces, noses or apices) of the boulder.

B - represents the center line within the boulder that intersects the L-axis at right angles.

T - represents the center line within the boulder that is perpendicular to the L-B planes.

B. Riprap shall be the size designated on the drawings and shall conform to the following:

IV. U PLACEMENTU:

SECTION 02275 - GEOTEXTILE FABRIC

The Contractor shall submit a certified test report from the manufacturer in accordance with SECTION 01300 – SUBMITTALS.

I. UErosion ControlU:

Erosion control geotextile fabric shall be nonwoven Class 2 minimum per AASHTO 712.08

II. USeparationU:

Seperation geotextile fabric shall be nonwoven Class 2 minimum per AASHTO 712.08.

III. ULandscape Weed BarrierU:

Landscape weed barrier geotextile fabric shall be nonwoven Class 3 minimum per AASHTO 712.08.

I. UGeneralU:

II. UInspectionU:

Before covering, the condition of the geotextile shall be inspected by the Project Manager to determine that no holes, rips or other defects exist. If any defects are observed, the section of the geotextile containing the defect shall be repaired or r...

III. URepairU:

IV. UPlacementU:

A. UErosion ControlU:

Geotextiles for erosion control shall be loosely laid (not stretched) with the roll direction the same as the anticipated water flow, and in a manner that avoids any rupture of the cloth. The geotextile may be anchored in place with securing pins at 3...

B. USeparatorU:

Riprap and heavy stone filling shall not be dropped onto the geotextile from a height of more than 1 foot. Slope protection and smaller sizes of stone filling shall not be dropped onto the geotextile from a height exceeding 3 feet. Replace geotextil...

The first lift of cover material, non-riprap, shall be end-dumped or spread over the geotextile from the edges of the geotextile. The height of the dumped pile shall be limited to avoid local bearing capacity failures. Equipment shall not be on the tr...

C. ULandscape Weed BarrierU:

SECTION 02279 - WATER QUALITY CONTROL

I. Erosion control devices and disposal of water resulting from dewatering operations shall be considered as incidental to the construction and all costs thereof shall be included in the related construction.

II. Temporary erosion and pollution control measures required due to the Contractor's negligence, carelessness, or failure to install permanent controls shall be performed at the Contractor's expense.

III. Any costs incurred for obtaining a Stormwater Construction Permit, if needed, and writing and administering the Stormwater Management Plan will not be measured but will be included in the project Mobilization item.

I. The Contractor shall comply with the "Colorado Water Quality Control Act," Title 25, Article 8, CRS; "Protection of Fishing Streams", Title 33, Article 5, CRS; "Clean Water Act", 33 USC 1344; regulations promulgated; certifications issued; and to...

II. Where the disturbed area is over one acre the Contractor shall obtain a Stormwater Construction Permit from the Colorado Department of Public Health and Environment, Water Quality Control Division.

III. The Contractor shall provide immediate permanent or temporary pollution control measures to prevent contamination of adjacent streams, lakes, ponds, or other watercourses or water impoundments areas.

IV. Cut slopes shall be seeded and mulched as the excavation proceeds. The surface area of erodible earth material exposed at one time shall not exceed 750,000 square feet for clearing and grubbing and 750,000 for earthwork operations.

V. UDewatering

1. Temporary pollution control shall include conducting required dewatering of excavations in a manner that avoids pollution and erosion.

2. Water from dewatering operations shall not be discharged into natural streams or waterway, into irrigation ditches or canals, or into storm sewers, unless allowed by a point source discharge permit. Discharge into sanitary sewers shall not be all...

3. The water from dewatering operations shall be contained in basins for dissipation by percolation or evaporation, shall be hauled away from the project for disposal in accordance with applicable laws and regulations, or it shall be applied to approv...

4. Depending upon the quality of the water, application of water to vegetated areas may require written concurrence from the Colorado Department of Public Health and Environment. The Contractor shall ascertain the water quality, and when applicable, ...

VI. Temporary pollution control shall include construction work outside the project area where necessary for borrow pits, haul roads and equipment storage sites.

VII. The Contractor shall prepare schedules for accomplishing temporary and permanent erosion control work and submit them for acceptance at the preconstruction conference. The schedules for the proposed method of erosion control shall include all ...

VIII. The Contractor shall incorporate all permanent erosion control features into the project at the earliest practicable time as outlined in the accepted schedule. Erosion control features shall be maintained by the Contractor until the project is...

IX. In the event of conflict between these requirements and water quality control laws, rules, or regulations of other Federal, State or local agencies, the more restrictive laws, rules, or regulations shall apply.

1. Limits of construction as ddescribed on the project plans. River channel change shall not occur at this project site.

2. Areas designated on the plans which must be entered to construct structures or erosion and sediment control measures.

3. Areas where waters must be forded no more than four times per day to facilitate construction. Fording waters more than four times per day will not be permitted; temporary bridges or other structures shall be constructed where more than four crossi...

1. The use of chemicals such as soil stabilizers, dust palliatives, sterilants, growth inhibitors, fertilizers, deicing salts, etc., during construction shall be in accordance with the manufacturer's recommended application rates, frequency, and instr...

2. When a project is subject to a water quality permit, the quantities of discharges, locations of discharges, composition of discharges, and quantities of dredging and fills will be stated in the permit. If the Contractor anticipates a change from p...

3. Any diversion from, or bypass of, facilities necessary to maintain compliance with the terms and conditions contained in these Specifications is prohibited except, (1) where unavoidable to prevent loss of life or severe property damage, or (2) wher...

4. Areas where fuels, lubricants, and other petroleum distillants are stored shall be restored to their original condition at the completion of the project. Equipment servicing shall occur within approved designated areas.

5. Areas designated on the plans shall be seeded or revegetated at the earliest practicable time to prevent soil erosion.

6. The Contractor shall not place plastic concrete into wetlands, watercourses, or impoundments.

1. Discharge of dredged or fill material into waterbodies or wetlands shall not be permitted.

2. Discharges into spawning areas during spawning seasons shall not be permitted.

3. Adverse impacts on the aquatic system caused by the accelerated passage of water or the restriction of its flow shall be minimized.

4. Heavy equipment working in wetlands shall be on mats to prevent undue disturbance and damage to the wetlands area.

5. Discharge into breeding areas of migratory waterfowl shall not be permitted.

6. All temporary fills shall be removed in their entirety.

7. Heavy equipment use in or around waterbodies or wetlands shall be of such type that will not produce environmental damage

SECTION 02934 - SEEDING AND MULCHING.pdf

SECTION 02934 - SEEDING AND MULCHING

I. TOPSOIL - EXISTING:

II. SEED:

A. Seed name.

B. Lot number.

C. Net weight.

D. Percentage of purity and germination (in case of legumes, percentage of germination to include hard seed).

E. Percentage of maximum weed seed content clearly marked for each kind of seed.

A. Name and address of laboratory.

B. Date of test.

C. Lot number for each kind of seed.

D. Results of tests as to name, percentages of purity and germination, and percentage of weed content for each kind of seed furnished, and in case of a mixture, the proportions of each kind of seed.

III. HYDROMULCH: Wood fiber mulch shall be applied uniformally on the soil surface in one operation by means of hydraulic equipment that uses water as the carrying agent.

I. SEED:

A. Dry Method: Mechanical seeders, grass seed drills, landscape seeders, cultipacker seeders, fertilizer spreaders, hand operated seeding devices, or other approved mechanical seeding equipment shall be used to apply seed (and fertilizer). Maximum d...

B. Hydro-Seeder Application: The seed shall be mixed with water to produce a slurry and then applied under pressure according to manufacturer's specifications. A continuous agitator action that keeps the materials in uniform suspension must be maint...

II. MULCH:

A. Hydromulch: Natural wood fiber mulch shall be produced from clean, whole-wood chips and have the property of dispersing readily in water. Mulch shall be applied at the rate of:

B. Hydraulic Blanket Mulch

File details come from the government source that posted it. Updated Mar 12, 2026.