Helena Portage Trail VSS Bid Drawings 1 of 2.pdf

PDF 1 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

About this file

Written by GovTribe AI · Mar 13, 2026

AHRA - Helena Boat Chute Portage Trail Improvements

This document comprises bid drawings and specifications for the Colorado Parks and Wildlife (CPW) Arkansas Headwaters Recreation Area (AHRA) Helena Boat Chute Portage Trail Improvements project, identified as Fund 1720, Appropriation Code PC002INFP, Project I.D. No. AR-501, located in Buena Vista, Colorado. The project involves construction of a portage trail system with improvements including trail widening to 12 feet, replacement of grouted rock surfaces with split-faced boulders, installation of boulder retaining walls spanning approximately 600-680 feet, relocation of rock stairs, bank protection enhancements, and a boat put-in area. Base bid items include mobilization and demobilization, earthwork (stripping, excavation, blading, shaping, and dewatering), aggregate and rock placement, geotextile fabric installation, seeding and mulching, and water quality control measures. Additional optional bid items address boulder reinforcement at the upstream drop structure and downstream put-in area. 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. Site access is restricted to a private residence address at 28280 County Road 313, requiring prior approval from CPW Park Management and coordination with the site-escort general contractor.

The mobilization lump sum price shall be paid once and includes all permits, insurance, bonds, plant and equipment movement, temporary facilities, fire protection, sanitary facilities, construction power, submittal documentation, and as-constructed record documents. Quality control and compaction testing may be required by the Project Manager at the contractor's expense. Material specifications address boulder and riprap properties with strict standards for soundness, density, absorption, and color compatibility with native river rock. Erosion control, water quality compliance with Colorado regulations, and stormwater management requirements apply, with the contractor responsible for temporary pollution control measures and incorporation of permanent erosion control features at the earliest practicable time. Heavy equipment restrictions apply in wetlands and waterbodies to prevent environmental damage. All work must comply with the Clean Water Act, Protection of Fishing Streams regulations, and Colorado Water Quality Control Act requirements.

View the file

Other files

File	Type	Posted
Helena Portage Trail VSS Bid Drawings 2 of 2 and Permits.pdf	PDF	Mar 8, 2017
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
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

On GovTribe

Work with this file

Download the original file
Contacts named in this file
Similar government files
Ask GovTribe AI about this file

Try for free Login

Text version

The file's text, extracted by GovTribe without its formatting.

AHRA - HELENA BOAT CHUTE PORTAGE TRAIL IMPROVEMENTS

DIVISION II – DRAWINGS

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)

1-1

TABLE OF CONTENTS

AHRA - HELENA BOAT CHUTE PORTAGE TRAIL IMPROVEMENTS

CPW Project No.: AR-501

COVER SHEET SHEET 1

SITE MAP SHEET 2

SITE ACCESS AND STAGING SHEET 3

PORTAGE TRAIL AND WALL SHEET 4

TRAIL ENTRANCE AND UPPER RIVER SHEET 5

BANK PROTECTION AND PUT-IN SHEET 5

1-2

(Page Intentionally Left Blank)

P R

O J

E C

T S

_P ar ks

\A rk an sa s H ea dw at er s R ec re at io n A re a\

H el en a

B oa t C hu te P or ta ge T ra il\

1- D

N \7

- D ra w in gs \2

A rk an sa s H ea dw at er s R

H el en a

B oa t C hu te P or ta ge T ra il

A L.

dw g, /1

:3 7:

AutoCAD SHX Text 49.56'

AutoCAD SHX Text

CHAFFEE CNTY RD 313

AutoCAD SHX Text FOR BURIED UTILITY INFORMATION CALL 811 TWO BUSINESS DAYS BEFORE YOU DIG UTILITY NOTIFICATION CENTER OF COLORADO (UNCC) OR COMMON GROUND ALLIANCE (CGA)

AutoCAD SHX Text R

AutoCAD SHX Text Fort Collins

AutoCAD SHX Text Winter Park

AutoCAD SHX Text Steamboat Springs

AutoCAD SHX Text Craig

AutoCAD SHX Text Rangely

AutoCAD SHX Text Meeker

AutoCAD SHX Text Glenwood Springs

AutoCAD SHX Text Basalt

AutoCAD SHX Text Idaho Springs

AutoCAD SHX Text Grand Junction

AutoCAD SHX Text Colorado Springs

AutoCAD SHX Text Buena Vista

AutoCAD SHX Text Paonia

AutoCAD SHX Text Denver

AutoCAD SHX Text Sterling

AutoCAD SHX Text Bailey

AutoCAD SHX Text Aspen

AutoCAD SHX Text Limon

AutoCAD SHX Text Delta

AutoCAD SHX Text Trinidad

AutoCAD SHX Text La Junta

AutoCAD SHX Text Salida

AutoCAD SHX Text Cortez

AutoCAD SHX Text Ouray

AutoCAD SHX Text Pueblo

AutoCAD SHX Text Lake City

AutoCAD SHX Text Durango

AutoCAD SHX Text Alamosa

AutoCAD SHX Text Creede

AutoCAD SHX Text Pagosa Springs

AutoCAD SHX Text

AutoCAD SHX Text E

AutoCAD SHX Text p

AutoCAD SHX Text

AutoCAD SHX Text o

AutoCAD SHX Text

AutoCAD SHX Text o

AutoCAD SHX Text

AutoCAD SHX Text p

AutoCAD SHX Text o

AutoCAD SHX Text

AutoCAD SHX Text o

AutoCAD SHX Text

AutoCAD SHX Text p

AutoCAD SHX Text

AutoCAD SHX Text p

AutoCAD SHX Text

AutoCAD SHX Text p

AutoCAD SHX Text

AutoCAD SHX Text p

AutoCAD SHX Text

AutoCAD SHX Text o

AutoCAD SHX Text

AutoCAD SHX Text o

AutoCAD SHX Text

AutoCAD SHX Text o

AutoCAD SHX Text

AutoCAD SHX Text p

AutoCAD SHX Text

AutoCAD SHX Text o

AutoCAD SHX Text

AutoCAD SHX Text p

AutoCAD SHX Text

AutoCAD SHX Text o

AutoCAD SHX Text

AutoCAD SHX Text o

AutoCAD SHX Text

AutoCAD SHX Text o

AutoCAD SHX Text

AutoCAD SHX Text o

AutoCAD SHX Text

AutoCAD SHX Text o

AutoCAD SHX Text

AutoCAD SHX Text o

AutoCAD SHX Text

SCALE IN

AutoCAD SHX Text

MILES

AutoCAD SHX Text

STATE MAP

AutoCAD SHX Text

SCALE IN

AutoCAD SHX Text

MILES

AutoCAD SHX Text 0.25

AutoCAD SHX Text 0.5

AutoCAD SHX Text

PROJECT VICINITY MAP

AutoCAD SHX Text

SCALE IN

AutoCAD SHX Text

FEET

AutoCAD SHX Text

PROJECT LOCATION MAP

AutoCAD SHX Text N

AutoCAD SHX Text Access Point Address: (Private Residence) 28280 County Rd 313 Buena Vista, CO NOTE: CONTRACTOR PERSONNEL SHALL NOT CONTRACTOR PERSONNEL SHALL NOT PERSONNEL SHALL NOT PERSONNEL SHALL NOT SHALL NOT SHALL NOT NOT NOT ACCESS PRIVATE RESIDENCE PROPERTY PRIVATE RESIDENCE PROPERTY PRIVATE RESIDENCE PROPERTY RESIDENCE PROPERTY RESIDENCE PROPERTY PROPERTY PROPERTY WITHOUT PRIOR APPROVAL FROM CPW PRIOR APPROVAL FROM CPW PRIOR APPROVAL FROM CPW APPROVAL FROM CPW APPROVAL FROM CPW FROM CPW FROM CPW CPW CPW PARK MANAGEMENT. CPW PERSONNEL MANAGEMENT. CPW PERSONNEL MANAGEMENT. CPW PERSONNEL CPW PERSONNEL CPW PERSONNEL PERSONNEL PERSONNEL WILL COORDINATE ACCESS TIMES WITH COORDINATE ACCESS TIMES WITH COORDINATE ACCESS TIMES WITH ACCESS TIMES WITH ACCESS TIMES WITH TIMES WITH TIMES WITH WITH WITH RESIDENT AND SITE-ESCORT GC FOR AND SITE-ESCORT GC FOR AND SITE-ESCORT GC FOR SITE-ESCORT GC FOR SITE-ESCORT GC FOR GC FOR GC FOR FOR FOR ALL PRE-AWARD SITE ACCESS NEEDS. Project Location: Buena Vista, CO Latitude: 38° 49' 43.48"N Longitude: 106° 6' 35.85"W

AutoCAD SHX Text

PARKS & WILDLIFE PROJECT CONTACTS

AutoCAD SHX Text Arkansas Headwaters Rrecreation Area

AutoCAD SHX Text 719-593-7289

AutoCAD SHX Text Capital Development Section

AutoCAD SHX Text 303-291-7391

AutoCAD SHX Text Park Manager - Rob White

AutoCAD SHX Text 719-539-7289

AutoCAD SHX Text Project Manager - Zak Humbles

AutoCAD SHX Text 303-291-7387

AutoCAD SHX Text

DATE

AutoCAD SHX Text

DESIGNER:

AutoCAD SHX Text

DRAFTER:

AutoCAD SHX Text

CHECKED BY:

AutoCAD SHX Text

APPROVED:

AutoCAD SHX Text

APPROVED:

AutoCAD SHX Text

CHIEF ENGR.:

AutoCAD SHX Text

REVISIONS:

AutoCAD SHX Text

DATE

AutoCAD SHX Text

PROJECT NO.

AutoCAD SHX Text

SHEET NO.

AutoCAD SHX Text

AHRA - BUENA VISTA, CO

AutoCAD SHX Text

CONSTRUCTION

AutoCAD SHX Text

HELENA DIVERSION PORTAGE TRAIL

AutoCAD SHX Text 11/2016

AutoCAD SHX Text

COVER SHEET

AutoCAD SHX Text

OF 6

AutoCAD SHX Text

PROJECT LOCATION

AutoCAD SHX Text

PROJECT LOCATION

AutoCAD SHX Text Sheet List Table

AutoCAD SHX Text Sheet Number

AutoCAD SHX Text Sheet Title

AutoCAD SHX Text

AutoCAD SHX Text Cover Sheet

AutoCAD SHX Text

AutoCAD SHX Text Site Map

AutoCAD SHX Text

AutoCAD SHX Text Site Access & Staging

AutoCAD SHX Text

AutoCAD SHX Text Portage Trail Wall & Stairs

AutoCAD SHX Text

AutoCAD SHX Text Upper River

AutoCAD SHX Text

AutoCAD SHX Text Lower River & Misc. Details

AutoCAD SHX Text

PROJECT LOCATION

N Q

R O

J E

C T

_P ar ks \A rk an sa s H ea dw at er s R ec re at io n

A re a\

H el en a B oa t C hu te

P or ta ge

T ra il\ 1-

- D ra w in gs

A rk an sa s H ea dw at er s R A

H el en a B oa t C hu te

P or ta ge

T ra il

N A

dw g, /1 5/

P M

AutoCAD SHX Text Property Boundary

AutoCAD SHX Text

DATE

AutoCAD SHX Text

DESIGNER:

AutoCAD SHX Text

DRAFTER:

AutoCAD SHX Text

CHECKED BY:

AutoCAD SHX Text

APPROVED:

AutoCAD SHX Text

APPROVED:

AutoCAD SHX Text

CHIEF ENGR.:

AutoCAD SHX Text

REVISIONS:

AutoCAD SHX Text

DATE

AutoCAD SHX Text

PROJECT NO.

AutoCAD SHX Text

SHEET NO.

AutoCAD SHX Text

AHRA - BUENA VISTA, CO

AutoCAD SHX Text

CONSTRUCTION

AutoCAD SHX Text

HELENA DIVERSION PORTAGE TRAIL

AutoCAD SHX Text 11/2016

AutoCAD SHX Text

SITE MAP

AutoCAD SHX Text

OF 6

AutoCAD SHX Text

SCALE IN

AutoCAD SHX Text Feet

AutoCAD SHX Text

SITE MAP

AutoCAD SHX Text Private Property Boundary

AutoCAD SHX Text Protect Fire Pit In Place

AutoCAD SHX Text Upstream Channel Boulder Location #1, - 3 Boulders, locate near existing boulders, on Tract D, CPW property. Refer to Upper River Work Sheet.

AutoCAD SHX Text Existing Boulder Structure To Be Augmented By 3 Strategically Placed Boulders of 4' to 5' Size In Stream Bed Off Bank. No Tie-In To Existing Bank Shall Occur. Position Indicated On Drawings Is Approximate. Place Per Engineer.

AutoCAD SHX Text Larger Eddy Landing Area Created

AutoCAD SHX Text Private Residence Lot 7

AutoCAD SHX Text OPTIONAL BID ITEM 11: Add Boulders To Add Boulders To Upstream Side Of Drop Structure To Protect From Scour. Refer To Upper Boat Chute Boulder Reinforcement Detail.

AutoCAD SHX Text OPTIONAL BID ITEM 11: Add Boulders To Protect Add Boulders To Protect Leading Edge Of Grouted Structure From Scour. Refer To Upper Boat Chute Boulder Reinforcement Detail.

AutoCAD SHX Text Remove Small Diameter Boulders and Reconstruct Retaining Wall With Minimum 6' Diameter Rounded Boulders. River Side Rock Face To Be Set At Property Line. Approximate Length 80 Feet. Back Fill And Reseed Native Mix. Refer To Portage Trail and Large Boulder Wall Detail.

AutoCAD SHX Text Move Stairs Back From Trail And Approximately 6 Feet South. Locate Per Direction of CPW Project Manager or CPW Project Representative. Refer To Rock Stair Detail.

AutoCAD SHX Text Remove Grouted Trail Surface And Replace To Match New Trail Construction Type.

AutoCAD SHX Text OPTIONAL BID ITEM 9: Add 4' & 5' Angular Boulders Add 4' & 5' Angular Boulders Below Grouted Boulder Wall To Diminish Drop At This Spot.Approximately 12' In Total Length Along Curvature. REfer to Downstream Boat Put-In Detail.

AutoCAD SHX Text Construct new dry stack shot/fractured boulder retaining wall approximately 50ft in length from the top of the existing portage ramp to approximately boulder cluster location #2 to aid against illegal trespass onto Lot 7. All rock shall be entirely on CPW property. Refer to Trail Entrance Path and Wall Detail.

AutoCAD SHX Text Private Residence

AutoCAD SHX Text Property Boundary

AutoCAD SHX Text 7863.00' Control Point 1 (Etched X on Rock) Trail Elevation At This Point N038° 49' 42.69"W106° 06' 34.12"

AutoCAD SHX Text Move Existing Large Diameter Boulder Retaining Wall Back So River Side Rock Is Set At Property Line. Approximate Length 600 Feet. Back Fill And Reseed Native Mix. Refer To Portage Trail and Large Boulder Wall Detail.

AutoCAD SHX Text Maintain Current Trail Elevations. Widen Trail To 12'. Replace Current Grouted Rock Surface With 4' Min. Split-Faced Boulders With Flat Sides Upward To Create Trail Surface. Refer To Portage Trail and Large Boulder Wall Detail.

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.