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Site work and environmental remediation for a municipal facility in Nederland, Colorado. Completed plans call for site work for a municipal facility; and for environmental remediation for a municipal facility.

Reference Number 0000355095 The Boulder County Parks and Open Space Department (BCPOS) is seeking proposals from qualified and experienced environmental remediation consultants for a Boulder County Cardinal Mill Environmental Remediation Project that includes 2024 implementation assistance to the County, wholistic strategy development and site assessment, and 2025 remediation process optimization. The Cardinal Mill is located approximately 2.1 miles west of the town of Nederland in Boulder County, Colorado. Coon Track Creek runs into North Beaver Creek which joins Middle Boulder Creek just above Barker Reservoir in Nederland. Barker Reservoir is the primary drinking water source for the City of Boulder. The Project location is the Cardinal Millsite Lot, 167 Bergren Road (Parcel Number 158315000049) and adjacent County-owned parcels on Caribou Road, Nederland (see Attachment A Project Location Map and Attachment B Parcel Survey Plat). Surface expressions of drainage include the Boulder County Tunnel adit (see Attachment B), springs on the mine waste slopes on either side of the Mill, surface water entering a manhole that is part of a toe drain system installed around the Mill (see Attachment C Cardinal Mill MSE Wall 2005 Plans), and the permitted outfall (the toe drain outlet) currently located on the southwest side of the small parking lot located on the southeast side of the Mill (Outfall # 001-A, Latitude 39.968766, Longitude -105.549771: see Attachment D COG318106 Certification to Discharge). The County purchased the parcel in 2003 and in late 2007, the County agreed to take over the Cardinal Mill Water Discharge Permit from the adjacent landowner. Through the Colorado Department of Public Health and Environment (CDPHE) Water Quality Control Division, BCPOS has an active long term remediation activities permit number COG318106, effective date 1/1/2022 with a compliance schedule for pollutant control measures to be implemented by 1/1/2025. Effluent discharge testing indicates high levels of potentially dissolved Cadmium, Copper, Lead, and Zinc. Additionally, Coon Track Creek is impaired for Arsenic and E. coli. An extension is being requested by the County for the compliance schedule, but permit compliance is not the responsibility of this Project. The intent is for the County to install a temporary remediation treatment facility in 2024 and for the selected Contractor in Task 1 to provide technical advice as needed related to the installation of the remediation facility. The primary work for this Contractor will be Tasks 2 and 3. Task 2 is development of a wholistic view of the site history and current contamination sources (review of existing data and additional data collection) and strategy recommendation related to site remediation. Task 3 is remediation process optimization based on knowledge gained from Task 1 and Task 2 and the goal to reduce water quality contamination to Coon Track Creek, not just meet minimum permit requirements. Question Deadline 06/25/2024 at 2:00 PM MT Questions are submitted online No, To contact Boulder County Purchasing or ask questions in relation to this proposal, respondents must register on online and initiate the communication electronically through the Vendor Discussions or the Ask a Question feature.

Post-Bid

Municipal

$150,000.00

Public - County

Environmental Remediation, Site Work

3

3

14

7

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July 17, 2024

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167 Bergren Rd, Nederland, CO

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