SPECIFICATIONS

PROJECT SITE AMENITIES:

Temporary Facilities:

1. Portable Restroom facilities need to be onsite at designated (Staging Areas 1&2) and anchored to the ground from the first day of work until project deliverables are completed.

2. Contractor is responsible for scheduling timelines, mobilization, maintenance, and payments.

SPECIFICATIONS:

1. Bridge (1) 1811:

a. Length: Forty (40’) ft

b. Inside Width: Eight (8’) ft

c. Gross Vehicle Weight Capacity: Ten Thousand (10,000-lbs)

d. South Corridor

e. AMS: Trail Segment-233

f. Boulder & Left-Hand Ditch Company

2. Bridge (2) 1812:

a. Length: Forty (40’) ft

b. Inside Width: Eight (8’) ft

c. Gross Vehicle Weight Capacity: Ten Thousand (10,000-lbs)

d. North Corridor

e. AMS: Trail Segment-233

f. Boulder & White Rock Ditch & Reservoir Company

3. Construction Schedule:

a. Contractor will have thirty (30) calendar days to complete all contract deliverables.

b. BCPOS staff requires a minimum of fourteen (14) calendar days advance notice of the scheduled start date to notify the public and set up trail closures.

c. Inclement Weather: Timeline extensions will be granted for unsafe, unworkable site conditions related to severe weather. Requests need to be submitted via email to the BCPOS Project Manager for approval.

4. Contact Information for the Project Manager, Ditch Companies and Safety Coordinator will be shared with the selected contractor.

5. Unanticipated Discovery of Cultural Resources:

a. If any materials or features potentially associated with historic or Indigenous cultural use are encountered during excavation or construction activities— including artifacts, foundations, structural remnants, or bone—all work in the immediate vicinity should be halted.

b. This protocol applies to all ground-disturbing activities, including excavation for concrete preparation, utility installation, and grading.

c. The Contractor must notify the Boulder County Parks and Open Space Cultural Resource Program Coordinator immediately.

i. Cultural Resource Program Coordinator contact information will be shared with awarded contractor.

d. The following response tiers apply:

i. Non-significant or Isolated Finds

1. If the materials are determined by the Cultural Resource Coordinator to be non-significant (e.g., scattered modern refuse, isolated artifacts, or features lacking integrity), the Contractor may resume work without further delay.

2. In some cases, the feature may be left in situ (where they have been found) with minor adjustments to avoid further disturbance.

ii. Potentially Significant Finds

1. If the discovery appears to have potential historical or archaeological significance, a cultural resource professional will assess the site.

2. Work will remain paused in the affected area until the evaluation is complete, and Boulder County provides authorization to proceed.

3. Mitigation measures (e.g., documentation, avoidance, or data recovery) may be required.

iii. Human Remains

1. If human remains are discovered, all work must cease immediately in accordance with Colorado Revised Statutes § 24- 80-1301–1305.

2. Local law enforcement and the State Archaeologist will be notified, and no work may resume until authorized by the appropriate authorities.

6. Mobilization:

a. Project Notifications:

i. Notify BCPOS Project Manager via email a minimum of fourteen (14) days in advance of the start date.

ii. Contractor required to notify both the Boulder White Rock and Boulder

Left Hand ditch companies Superintendents via email three (3) days prior to construction.

iii. BCPOS staff and BC Public Works will co-manage public notifications and trail closures.

iv. Notify BCPOS Project Manager seven (7) days prior to anticipated completion of the project.

b. Colorado Department of Transportation (CDOT) Access Requirements:

i. Applies only to the (North Bridge Access Road) entrance off Hwy-

52/Mineral Rd.

ii. Right Turns Only entering and exiting the property for all fleet and commercial vehicles. FODS installation (Attachment B) at the entrance.

iii. Concrete Deliveries need to be scheduled between (10am & 2pm).

iv. Any dirt or debris tracked onto the Highway needs to be cleared to the N.

side of the Highway with a skid-steer equipped with a broom attachment.

v. All lane closure or traffic modification requests need to be submitted to

Utility Engineering Technician Mike Grover for review and approval.

1. Contact information will be shared with the selected contractor.

vi. Contractor is required to provide all signage, traffic control measures, flaggers, and comply with timelines specified by CDOT.

c. FODS Track Out Control:

i. Attachment C: Best Management Practices.

ii. Access Points 1 & 2.

iii. Installation of FODS Track-out Control System required at all active designated access locations prior to mobilization of heavy equipment, fleet vehicle commercial vehicles.

d. Best Management Practices:

i. Attachment C: Best Management Practices

ii. BCPOS itemized material estimates are approximate. Contractors are responsible for verifying all itemized material estimates prior to mobilization and construction.

iii. BMPs need to be installed, inspected, and approved by BCPOS Project Manager prior to excavation at all three (3) approach locations.

iv. Contractors need to take necessary precautions to not impact the existing ditch banks or impede water flow of both the Boulder-White Rock and Boulder-Left Hand owned ditches during all phases of construction.

v. Contractors are liable for any costs associated with waterway impacts and repairs to Ditch Company owned infrastructure.

vi. Timeline extensions will be granted if the (North Bridge Access Road) leading to Staging Areas-2 is saturated and site damage will occur during mobilization.

vii. Timeline extensions will be granted for unsafe and unworkable site conditions related to weather.

viii. Requests need to be submitted and approved via email by the BCPOS Project Manager.

e. Designated Access & Staging Areas:

i. Attachment A: Site Maps-Trail Closure

ii. Attachment C: Best Management Practices

iii. There are two (2) designated staging areas for vehicles, equipment, tools, construction materials.

iv. Designated staging areas can also be utilized as temporary parking and turn-round locations for delivery vehicles.

v. No development of temporary construction roads outside of the existing trail corridor and designated access locations is permitted unless deemed essential by BCPOS staff to complete contract deliverables.

vi. Alternative access requests need to be approved in writing from the BCPOS Project Manager.

vii. One (1) Concrete Washout Bin Required Onsite: Staging Area 1 only.

viii. No concrete cleanup at Staging Area 2.

ix. Portable Restrooms required at both Staging Areas 1 and 2.

f. Equipment & Vehicles

i. All equipment needs to be in working condition, power washed and inspected by BCPOS Project Manager before work operations begin.

ii. Checking for fluid leaks and vegetative material that could spread invasive seeds on the property.

iii. Utilize the designated access routes for equipment mobilization, material deliveries, portable restroom services, and emergencies.

iv. Contractor and sub-contractors are responsible for all expenses related to repairs and replacement of existing Boulder County owned infrastructure if damaged during any phase of construction.

g. Demobilization

i. Portable Restrooms at Staging Areas 1 & 2 hauled off site.

ii. Demobilization of all contractor assets and rentals.

iii. Contractor responsible for proper site cleanup and haul-away of BMP’s, fluid spills, and any other imported contaminants.

iv. All impacted areas need to be restored to preconstruction condition.

7. Temporary Fences & Barricades:

a. Attachment C: Best Management Practices

b. Boulder County is not responsible damages due to inadequate concrete curing protection measures.

c. Concrete curing protection measures shall remain in place seven (7) days minimum before reopening to the public.

d. Material may be new or used but shall be suitable for intended purpose.

e. Fences and barriers should be structurally adequate and neat in appearance.

f. Construction Barrier Fencing: Plastic orange mesh construction fence, 4’ height.

g. Portable Chain Link Fencing: Shall be open mesh fencing, 6-ft. height, with top and bottom rails.

h. Posts shall be spaced at max (8) feet on center and be equipped with crossbar bases for stability.

i. Weigh bases down with sandbags if required. Provide lockable gates.

j. Portable chain link fencing shall be required at either end of the construction site during trail closures.

k. Barrier Tape: Banner Guard, imprinted with any combination of “CAUTION”, “CONSTRUCTION AREA”, or “KEEP OUT” can be set up as preferred by the contractor.

8. Concrete Approach Specifications:

a. Attachment C: Best Management Practices

b. Attachment D: Concrete Approach Details

c. Attachment E: CDOT Class (B) Specifications

d. Contractors are required to arrange (Locates-811) at all three (3) approach locations prior to excavation.

e. BMP’s need to be installed and inspected by the BCPOS Project Manager prior to excavation.

f. If existing subgrades fail to meet 95% compaction testing requirements; the

(Alternative Bid Items) require implementation.

g. All exterior concrete shall conform to CDOT specifications for Class (B) concrete with 5% to 8% air content, + / two inches (2”) of Slump, containing at a minimum: 600 pounds per cubic yard of cementitious materials and having a minimum compressive strength of (4500 psi at 28 days).

h. Excavated material for concrete preparation needs to be hauled off the property and legally disposed of.

i. One (1) Concrete Washout Bin Required Onsite: Staging Area 1 only.

j. Bin Specifications: Contractor to determine required capacity. Maximum allowable size 7’x7’ (84" Length): Carrying capacity: 8,000 lbs.

k. No concrete cleanup at Staging Area 2.

l. Wastewater shall be hauled off the property and legally disposed of.

9. Proctor Testing Reports | 95% Standard Compaction:

a. Attachment D: Concrete Approach Details

b. Aggregate Base Course (Class 6) road base density testing will require: one (1)

95% proctor analysis at all three (3) approach locations.

c. Density testing will require: one (1) proctor, and one (1) gradation analysis at all three (3) Concrete Approach locations.

d. All density testing reports to be provided to the BCPOS Project Manager for conformance to general project specifications prior to pouring concrete.

e. Testing methods used will be in accordance with project specifications developed by Boulder County.

f. Other laboratory testing will be conducted as deemed necessary or requested by the County to evaluate conformance of fill materials with project specifications.

g. If existing subgrades fail to meet 95% compaction testing requirements; the

(Alternative Bid Items) require implementation.

10. Compressive Strength Concrete Testing Reports:

a. Bridge-1 (WS-1811)

i. CDOT Class (B) Specifications

ii. Two (2) Concrete Approaches

iii. Seven (7) Day Reports

iv. Twenty-Eight (28) Day Reports

v. Minimum Compressive Strength (4500-psi) at (28) Days

b. Bridge-2 (WS-1812)

i. CDOT Class (B) Specifications

ii. One (1) Concrete Approach

iii. Seven (7) Day Report

iv. Twenty-Eight (28) Day Report

v. Minimum Compressive Strength (4500-psi) at (28) Days

MINIMUM QUALIFICATIONS:

• Experience in Civil and Concrete Construction

• Experience in Concrete Flat Work | CDOT Class B Specifications

• Experience Operating Heavy & Light Equipment.

• Experience Interpreting Blueprints and Site Plans.

CONTRACTOR RESPONSIBILITIES:

1. General Contractor:

a. General Contractor is responsible for ensuring all contract deliverables are implemented in the required sequence, managing all phases of construction, and completing the project within the specified timeline to Boulder County standards.

b. Responsibilities include;

a. Planning project logistics

b. Establishing timelines

c. Verifying material estimates

d. Detail drawing specifications

e. Permit compliance

f. Jobsite Safety

g. Scheduling deliveries

h. Hiring qualified subcontractors

i. Legally disposing or recycling construction waste

j. Reclamation

k. Managing all sub-contractor activity during construction throughout the trail corridor and surrounding roadways.

c. Construction Schedule: Prior to the commencement of work, the Contractor shall provide a construction schedule outlining their schedule for the implementation and completion of the project.

a. The schedule shall include the sequencing and duration of work for each scope item, as well as the duration of anticipated trail closures.

b. The Construction Schedule shall be reviewed and approved by the BCPOS Project Manager prior to the start of construction.

c. The Contractor shall not deviate from the Schedule without prior written approval from the BCPOS Project Manager.

d. Contractor and sub-contractors are responsible for all expenses related to repairs and replacement of existing Boulder County owned infrastructure if damaged during any phase of construction.

e. Submit revisions of the schedule(s) as the project conditions warrant.

f. Notify BCPOS Project Manager (14) days prior to the start of construction.

a. An onsite Pre-Construction Meeting shall be scheduled by the contractor, held prior to the start of any construction, and attended by the contractor's project supervisor.

g. All contractors need to maintain professionalism if interacting with members of the public.

a. Promptly communicate any conflicts or concerns that may arise to the BCPOS Project Manager.

2. Subcontractors:

a. The General Contractor is required to disclose to Boulder County the complete business name(s), Statement of Qualifications (SOQ), and proof of insurance for all potential subcontractors that will be assigned to this project at a minimum of fourteen (14) days in advance so the BCPOS project management team can review procurement criteria before work begins.

b. Boulder County reserves the right to deny the services of subcontractors that are deemed unqualified to complete specific contract deliverables.

c. Contractor acknowledges complete responsibility for the actions or inactions of its subcontractors.

d. Contractor is responsible for the compliance of all subcontracting parties with the terms of the contract and with any applicable local, state or federal laws or regulations.

e. Contractor shall be solely responsible for the timely payment of its subcontractors.

DELIVERABLES:

1. Mobilization:

a. Emergency Management Plan

b. FODS Track Out Control: Access 1 & 2

c. Transporting all Contractor Assets On & Off site

d. Temporary Construction Fence

e. Sediment Control Logs

f. Portable Restroom Facilities: Staging Areas 1 & 2

g. Demobilization & Clean Up of all Impacted Areas

2. Concrete Bridge Approaches:

a. Approach & Abutment Transitions Subgrade Preparation: Excavation & Haul Away

b. Thickened Edge: 6" Class (6) Aggregate Base Course

c. Bridge 1 (WS-1811) Concrete Approaches

d. Bridge 2 (WS-1812) Concrete Approach

e. Trail Edge Grading: Swale at Bridge-1 (WS-1811)

f. D50 TYPE VL Riprap = 6"

3. Proctor Testing Reports | 95% Standard Compaction:

a. Existing Approach Subgrade to 95% Standard Proctor.

b. Thickened Edge Aggregate Base Course to 95% Standard Proctor.

4. Compressive Strength Concrete Testing Reports | CDOT Class (B):

a. Bridge-1 (WS-1811)

i. Two (2) Approaches

ii. Seven (7) Day Reports

iii. Twenty-Eight (28) Day Reports

iv. Minimum Compressive Strength (4500-psi) at (28) Days

b. Bridge-2 (WS-1812)

i. One (1) Approach

ii. Seven (7) Day Reports

iii. Twenty-Eight (28) Day Reports

iv. Minimum Compressive Strength (4500-psi) at (28) Days

5. ALTERNATIVE BID ITEMS | Native Subgrade Failed to Meet 95% Proctor Requirements:

a. Atl. 1 | Entire Concrete Approach Subgrade: six (6") inches compacted class-6 road base:

i. Bridge (1811) two (2) approaches

ii. Bridge (1812) one (1) approach

b. Alt. 2 | Excavate and Haul Material Off-site

c. Alt. 3 | Density Testing:

i. All three (3) Concrete Approaches 95% Proctor Testing Reports

6. CONSTRUCTION SCHEDULE:

a. Contractor will have thirty (30) consecutive calendar days to complete all contract deliverables.

b. Available Timeline: Prior to the commencement of work, the Contractor shall provide a construction schedule outlining their schedule for the implementation and completion of the project).

c. BCPOS staff requires a minimum of fourteen (14) calendar days advance notice of the scheduled start date to notify the public and set up trail closures.

d. Inclement Weather: In the event the site is not workable due to heavy saturation from weather events; BCPOS staff will determine if weather conditions require work to be temporarily halted.

i. BCPOS staff will consult contracted PM for timeline extensions in writing as needed.

COUNTY RESPONSIBILITIES:

1. Provide the Contractor with a Notice to Proceed (NTP) indicating approval to proceed with the work and phases described herein.

2. BCPOS will set up trail closures and reroutes, send public notifications, and updates on the BCPOS and Public Works webpages to align with the contractor’s timeline and progress.

3. Designate a person to act as the County’s contact with respect to the services related to this project.

a. The County will review the limits of disturbance, monitor all scope-of-work and be available during normal construction hours and days of the week to answer any questions or address any issues that may arise.

4. Provide the Contractor with all available information pertinent to completing project deliverables.

PERMITS, LICENSES, LOCATES AND CODES:

The selected Contractor shall have full responsibility for identifying and obtaining, prior to the start of work, and for maintaining throughout the term of the Project, any permits and licenses which may be required in order to carry out the work. The Contractor shall also be responsible for following all State and County codes, which may be required in order to carry out the Project.

The Contractor shall also be responsible for all "locates" of all public utilities related to performing work under the terms of this Contract. The Contractor shall also be responsible for insuring that any of its subcontractors performing work on the Project satisfy the provisions of this paragraph.

Contractor is responsible to contact and coordinate with utility companies regarding protection of existing utilities and special requirements at utility crossing locations, as well as other conditions where work is nearby existing utilities. Contractor shall be responsible for all costs of coordination with utilities including, but not limited to, outages, protection or support and any fees for costs from the utility.

CONTRACTOR LICENSING:

It is the responsibility of the selected Contractor to apply for and ensure the appropriate Contractor’s license is obtained.

General contractors, HVAC contractors, and roofing contractors require licensing through the Boulder County Community Planning and Permitting Department. Electricians and plumbers are required to be licensed through the State of Colorado and registered with the Boulder County Community Planning and Permitting Department. Furthermore, it is required for all Architects, Professional Engineers and Professional Land Surveyors to be fully licensed through the State of Colorado.

SUBCONTRACTORS:

Contractor is required to disclose to County the complete business name(s) of all potential subcontractors that will be assigned to this Project, should the Contractor be selected. Contractor acknowledges that it is completely responsible for the actions or inactions of its subcontractors.

Contractor shall be responsible for the compliance of all subcontracting parties with the terms of the Contract and with any applicable local, state or federal laws or regulations. Contractor shall be solely responsible for timely payment of its subcontractors.

PROJECT COMPLETION SCHEDULE:

The selected bidder will have thirty (30) calendar days, after execution of the contract and after the Notice to Proceed has been issued, to complete the work.

CONFLICT OF INTEREST:

Any party that has developed, designed or drafted specifications, requirements, statements of work and/or has participated in planning activities for this Project may be excluded from consideration for the award of this Project.

CHANGE ORDERS:

Any unplanned, change orders, modifications or additional services to this Project, shall be submitted by the Contractor, in a separate, written document, including a fee schedule and completion schedule and presented to the County for review. Approval from the County, in writing, must accompany all change order requests.

OVERNIGHT CAMPING:

Boulder County prohibits any overnight camping; all operational staff, including designated security staff, are not authorized to be present at Project site from sunset to sunrise, the open space property will remain closed during these hours to the contractor and its subcontractors and/or designated representatives and/or agents, unless specifically authorized by a BCPOS representative.

HOURS OF OPERATION:

Contractor work hours shall be designated as Monday through Friday, 6:00 a.m. to 7:00 p.m.

Work on Saturdays and Sundays, nights, and designated Federal Holidays shall not be allowed unless approved, in writing, by the County.

OWNERSHIP OF WORK PRODUCT:

All work product, property, data, documentation, information or materials conceived, discovered, developed or created by the selected Contractor pursuant to this bid and subsequent Contract will be owned exclusively by the County. To the extent possible, any Work Product will be deemed to be a work made for hire. The selected Contractor unconditionally and irrevocably transfers and assigns to the County all right, title and interest in and to any Work Product.

The selected Contractor will agree to keep confidential all County Data, and will agree not to sell, copy, modify, reproduce, republish, assign, distribute, data mine, search or disclose any such confidential information to any other person or entity without the County’s written permission, including metadata (e.g. aggregations of county data or analysis of county data content).

The Contractor shall not access County accounts or County Data, except in the event as required by the express terms of a written contract between the mutual Parties and/or at the express written request of the County. All data obtained by the Contractor in the performance of this solicitation resulting in a contract shall become and remain the property of the County. The Contractor shall not use any information collected in connection with the service issued from this solicitation for any purpose other than fulfilling a County contract for this BID.