1_SOW__Sky_Ridge_and_Ridgegate_Erosion_Control_and_Seeding.pdf
PDF 5 MB Posted
- Solicitation number
- IFB 326DH015
- Issued by
- Arapahoe County, Denver City, Colorado
About this file
This is a Scope of Work document for the Regional Transportation District (RTD) in Colorado detailing erosion control and seeding services at two Park-n-Ride facilities located in Lone Tree, Colorado. The project addresses significant weed overgrowth and soil erosion concerns at the Sky Ridge and Ridgegate Parkway Park-n-Rides, with work scopes including site clearing and debris removal, soil preparation and amendments, seeding with native fire-wise vegetation blends, straw mulch application, and establishment irrigation. The Sky Ridge Park-n-Ride site encompasses approximately 20,500 square feet (0.5 acres), while the Ridgegate Park-n-Ride site covers approximately 241,000 square feet (5.5 acres). RTD personnel evaluated the sites on December 21, 2023, confirming the presence of multiple weed species including those on Colorado's noxious weed list and visible signs of soil erosion. The contractor must submit a proposed construction schedule and site plan that ensures pedestrian traffic remains unimpeded, as the Light Rail Platform will remain operational throughout the project. The document is dated April 30, 2026, with landscape site plans included as supporting exhibits.
The contractor is responsible for providing all labor, equipment, machinery, vehicles, power tools, consumable supplies, and required authorizations and permits without additional reimbursement. The contractor must maintain 24/7 availability through a designated supervisor and primary contact with response times of 15 minutes for messages and one hour for dangerous or unacceptable conditions. All hazard warning equipment and traffic strobe lighting must be operational on vehicles during work activities. Material Safety Data Sheets (MSDS/SDS) for all products must be submitted for RTD approval prior to use. Upon completion and RTD inspection confirming satisfactory work performance and plant establishment, RTD will issue written notice of final acceptance and finalize warranty periods. The contract specifies that the Light Rail Platform must remain active throughout the project duration, requiring careful coordination and scheduling.
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Sky Ridge and Ridgegate Erosion Control and Seeding
Regional Transportation District
Erosion Control and Seeding for Sky Ridge and Ridgegate Park-n-Rides
Date: April 30, 2026
Project Background:
RTD’s maintenance team reported significant overgrowth of weeds and concern for long-term soil stability at the Sky Ridge and Ridgegate Parkway Park-n-Rides. The suggested course of action is to clear the area of weeds and debris, prepare the site with soil amendments, and seed with a native, fire-wise blend as the original design intended.
Summary of Events in response to notification of erosion concern:
• Thursday, December 21, 2023 – RTD visits Sky Ridge and Ridgegate Park-n-Ride to evaluate identified overgrowth and erosion concerns. The area is confirmed to be overgrown with many species of weeds (including some of those on Colorado’s noxious weed list) and signs of soil erosion are present.
* Please refer to all project drawings and corresponding general and technical specifications for specific information.
Site 1: Sky Ridge Park-n-Ride
Sky Ridge slope with overgrowth and weeds
Site 2: Ridgegate Park-n-Ride
Ridgegate slope with overgrowth and weeds
SCOPE OF WORK
The intent of this contract is to resolve the identified concerns for weed overgrowth, long-term slope stability, and erosion control along the Ridgegate Parkway and Sky Ridge Light Rail Platforms through seeding and establishment irrigation.
This project will include site clearing and haul away of vegetative material and site debris, soil preparation and amendments, seeding (seed drilling if and where possible), and cover with straw mulch. A plan for establishment irrigation will be necessary for the seed to survive and thrive.
GENERAL REQUIREMENTS
Project Requirements
Contractor shall provide a proposed schedule and construction plan for the project. This is to include site fencing plans that illustrate how pedestrian traffic shall not be impeded through the duration of this project as the Light Rail Platform will remain active.
Safety and Communication Requirements – Refer to General Specifications A. All communication shall be conducted via one contractor email address and one contractor primary phone number.
B. RTD shall have immediate access to the Contractor’s Supervisor and/or a backup supervisor twenty-four (24) hours per day, seven (7) days per week. In the event a message taking system should be employed, a response back to RTD must be returned within fifteen (15) minutes from the time the message was left on the answering system.
Failure to comply shall result in a formal written warning, which if five such warnings accumulate, may lead to contract termination.
C. Upon verbal and/or written notification, the Contractor shall respond and remedy any “Dangerous Conditions” and/or “Unacceptable Conditions” within (1) one hour after receipt of notification that such conditions exist (with consideration given for travel time).
It is the Contractor’s responsibility to monitor email, voicemail and/or text messaging to ensure response times follow contract specifications. Correction of either a Dangerous Condition or an Unacceptable Condition shall not be billable.
D. Contractor shall provide means of communication with their staff so that they may be dispatched for emergency repairs (i.e. irrigation system leaks and/or running water) or other activities as requested by RTD. Emergency repairs for irrigation system leaks and/or running water resultant from the Contractor is not reimbursable and must be responded to and remedied within 1 hour (with consideration given for travel time). All requests for such services shall be channeled through the Contractor’s Supervisor. At no time shall RTD be required to contact the Contractor’s employees directly.
E. Contractor shall report any damage or safety hazards by calling RTD Facilities Maintenance Department at 303.299.3304 and leave a detailed message describing the incident.
F. While administering services on RTD property, the Contractor’s employees should report any vandalism activity or suspicious activity to their supervisor and/or the appropriate jurisdictional police department. Contractor’s Supervisor should then notify RTD as soon as possible and give detailed information regarding the activity.
G. Contractor shall be able to send and receive e-mail communications with photos/videos to and from designated RTD personnel.
General Provisions – Refer to General Specifications
A. Contractor is responsible for providing, without additional reimbursement, all labor, vehicles, equipment, machinery, power tools and hand tools required to perform work, including but not limited to; all gas/oil, tires, accessories, etc. for machinery and/or vehicles. Contractor to provide without additional reimbursement all consumable supplies to perform work including but not limited to; chemicals, solvent products, trash bags.
Contractor shall provide copies of all MSDS/SDS sheets for any products they intend to use on RTD property. All products shall be approved by RTD before use.
B. Contractor management personnel shall meet with RTD management when requested to discuss issues relating to irrigation and/or landscaping services. Contractor’s management and/or supervisory personnel shall be available during regular working hours to meet RTD management and/or supervisory personnel at the applicable RTD site to resolve problems that have not been satisfactorily resolved by means of telephone communications, video meetings, or other remote communications.
C. The Contractor shall be responsible for acquiring and maintaining all required authorizations, licenses, and permits, including authorizations for light rail access, traffic control, etc. in the event it becomes necessary.
All vehicles assigned to perform Irrigation and/or Landscaping services at RTD properties under this contract shall be equipped with traffic strobe lighting. Such hazard warning equipment shall be operational during Irrigation and Landscaping activities. Contractor will address vehicle signage and hazard warning equipment on team members.
CONTRACT HANDOVER AND COMPLETION OF WARRANTY PERIODS
If, after inspection, RTD is of the opinion that all work has been performed according to the Contract Documents and/or technical specifications, and that all tree, shrub, ground cover, and irrigation areas are in satisfactory growing condition, RTD will give written notice of final acceptance of contract completion and finalize any outstanding warranty periods.
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REVISIONSNO. BY DATE
DRAWN BY:
DESIGNED BY:
DATE:
DATE:
APPROVED BY:
CHECKED BY:
DATE:
DATE:
VERT. SCALE:
HORZ. SCALE:
1600 BLAKE STREET
DENVER, COLORADO 80202
(303) 628-9000
REGIONAL TRANSPORTATION DISTRICT
SHEET
NUMBER
Know what's below.
before you dig.Call
R
EB 04/22/2026
EB 04/22/2026 SKYRIDGE AND RIDGEGATE PnR
LONE TREE, CO
COVER SHEET
EROSION CONTROL AND SEEDING
G001
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G-001 COVER SHEET
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AREA OF WORK
SITE PLAN - RIDGEGATEL-101
RIDGEGATE
PARK-N-RIDE AREA OF
WORK
SKYRIDGE
PARK-N-RIDE
RIDGEGATE
PARK-N-RIDE
SHEET LIST
SITE PLAN - SKY RIDGE L-100
SKYRIDGE AND RIDGEGATE PnR
SEEDING AND EROSION CONTROL
MAY 2026
AREAS OF WORK
1650 BROADWAY STREET, 700
DENVER, COLORADO 80202
(303) 628-9000
REGIONAL TRANSPORTATION DISTRICT
SKY RIDGE
PARK-N-RIDE
AutoCAD SHX Text
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RH
'-0
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REVISIONSNO. BY DATE
DRAWN BY:
DESIGNED BY:
DATE:
DATE:
APPROVED BY:
CHECKED BY:
DATE:
DATE:
VERT. SCALE:
HORZ. SCALE:
1600 BLAKE STREET
DENVER, COLORADO 80202
(303) 628-9000
REGIONAL TRANSPORTATION DISTRICT
SHEET
NUMBER
Know what's below.
before you dig.Call
R
EB 04/22/2026
EB 04/22/2026
1" = 50'-0"
25 50 75
SKY RIDGE AND RIDGEGATE PnR
LONE TREE, CO
LANDSCAPE SITE PLAN - SKY RIDGE
EROSION CONTROL AND SEEDING
L101
LEGEND
AREA TO BE:
· CLEARED AND GRUBBED
· SOIL CONDITIONED AND PREPPED
· EROSION CONTROL ESTABLISHED
· SEEDED WITH LOW GROW/FIREWISE MIX (DRILL SEED
ON ALL SLOPES 2:1 OR FLATTER)
· TEMPORARY IRRIGATION
20,500 SF or 0.5 ACRE
PCC
CH
TPSS
RH
RH
REVISIONSNO. BY DATE
DRAWN BY:
DESIGNED BY:
DATE:
DATE:
APPROVED BY:
CHECKED BY:
DATE:
DATE:
VERT. SCALE:
HORZ. SCALE:
1600 BLAKE STREET
DENVER, COLORADO 80202
(303) 628-9000
REGIONAL TRANSPORTATION DISTRICT
SHEET
NUMBER
Know what'sbelow.
before you dig.Call
R
EB 04/22/2026
EB 04/22/2026
1"=140'-0"
70 140 210
SKY RIDGE AND RIDGEGATE PnR
LONE TREE, CO
LANDSCAPE SITE PLAN - RIDGEGATE
EROSION CONTROL AND SEEDING
L102
LEGEND
AREA TO BE:
· CLEARED AND GRUBBED
· SOIL CONDITIONED AND PREPPED
· EROSION CONTROL ESTABLISHED
· SEEDED WITH LOW GROW/FIREWISE MIX (DRILL SEED
ON ALL SLOPES 2:1 OR FLATTER)
· TEMPORARY IRRIGATION
241,000 SF or 5.5 ACRE
| 1_SOW_ Sky Ridge and Ridgegate Erosion Control and Seeding |
| Regional Transportation District |
| Erosion Control and Seeding for Sky Ridge and Ridgegate Park-n-Rides |
| Project Background: |
| Summary of Events in response to notification of erosion concern: |
| Site 1: Sky Ridge Park-n-Ride |
| Sky Ridge slope with overgrowth and weeds |
| SCOPE OF WORK |
| GENERAL REQUIREMENTS |
| Project Requirements |
| General Provisions – Refer to General Specifications |
CONTRACT HANDOVER AND COMPLETION OF WARRENTY PERIODS
| 3_Landscape Plans_ Sky Ridge and Ridgegate Erosion Control and Seeding |
| Cover Sheet_Sky Ridge and Ridgegate Erosion Control and Seeding |
| Sheets and Views |
| Skyridge and Ridgegate_Erosion Control-Cover Sheet |
| Skyridge and Ridgegate_Erosion Control-Landscape Plan - Sky Ridge |
| Sheets and Views |
| Skyridge and Ridgegate_Erosion Control-Landscape Plan - Sky Ridge |
| Skyridge and Ridgegate_Erosion Control-Landscape Plan - Ridgegate.pdf |
| Sheets and Views |
| Skyridge and Ridgegate_Erosion Control-Landscape Plan - Ridgegate |
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