EPRO2020-001 Weeks Lake Gravel Pit Soil Remediation

Feb 12, 2020, 03:09 PM
Project manager:
Lisa Sykes
Contact person:
Lisa Sykes
Project manager phone:
Contact person phone:
Project ID:
EPRO2020-001
PublishedDate:
Feb 12, 2020, 12:00 AM
ClosingDate:
Mar 4, 2020, 04:00 PM
Approx. Time Left:
Departments:
Environmental Protection
Project Status:
Concluded
Tender Type:
Call for Qualifications

Awarded to:
Summit Earthworks Inc.

Project Description:

February 26, 2020 - Addendum 1 Posted

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CAPITAL REGIONAL DISTRICT

REQUEST FOR QUALIFICATIONS
Weeks Lake Gravel Pit Soil Remediation
RFQ No. EPRO2020-001 

The purpose of this Request for Qualifications ("RFQ") is to invite interested parties to submit responses indicating their interest in, and qualifications for the "Project" described as follows:

· Remedial excavation of metals and polyaromatic hydrocarbon (PAH) contaminated soil at the Weeks Lake Gravel Pit within the Greater Victoria Water Supply Area (GVWSA).

Based on these responses, in accordance with the terms of this RFQ, a shortlist of Proponents will be invited to participate in the next stage of the Competitive Selection Process, the Request for Proposal ("RFP") stage. The Capital Regional District ("CRD") expects to shortlist three to four Proponents from the RFQ.

This RFQ is not a tender or an offer or a request for proposals, and there is no intention by the CRD to make an offer by issuing this RFQ.

Under the Competitive Selection Process, the CRD is seeking to enter into a Contract (the "Contract") with a qualified entity ("Contractor") to provide remediation services for the Project as described above.

Site Details

The Weeks Lake Gravel Pit is remote and is located approximately 40 km northwest of Victoria. Weeks Lake and the surrounding area is within the Greater Victoria Water Supply Area (GVWSA) and is accessed via gravel forestry roads. The Weeks Lake Gravel Pit Site has a history of unauthorized use as a firearms practice range and minor indiscriminant waste dumping.

Between 2017 and 2019, CRD Environmental Protection staff have conducted soil and water testing at the Gravel Pit. Metals and PAH contamination have been identified in the soil at the Gravel Pit, including hazardous waste levels of lead.

Approximate soil volumes are:

Onsite Stockpile:
· ~155 m3 of soil exceeding commercial/natural wildlands (CL/WLN) use standards for offsite disposal (non-leachable)
· ~20 m3 of soil below WLN standards (to remain onsite, but will be moved to excavate beneath it)

In-Situ Contaminated Soil (though not likely to segregate the two soil types):
· ~200 m3 of soil exceeding WLN standards
· ~200 m3 of soil exceeding the BC Hazardous Waste Regulation (HWR) leachate quality standards for lead

Scope of Work

The goal for the project is remediation of the Site in accordance with the BC Ministry of Environment and Climate Change Strategy (ENV) to ensure protection to human health and the environment (assuming ENV natural wildland land use and drinking water use), and mitigate long term financial risk to the CRD. Note, the CRD does not intend to apply for a certificate of compliance for this site.

The prime contractor will provide 'forensic' remediation services of the gravel pit. In general this will entail excavation, transportation and disposal of soil exceeding WLN standards, as directed by CRD staff, off-site to a provincially regulated facility/facilities. In most areas the soil excavation will extend to a depth of 0.15 m below ground surface (bgs). Samples and analysis of the soil indicate that much of the soil exceeds the HWR for leachable lead sporadically throughout the Site and must be handled accordingly. Separation of soil exceeding WLN standards from soil exceeding HWR standards may not be possible. A lead Exposure Control Plan (ECP) must be prepared by the contractor prior to commencing work.

Due to the remote location of the Site within the GVWSA, strict fire restriction guidelines are upheld at the Site. To comply with these fire restrictions, the CRD would like to complete the work after snow melt and prior to fire season, anticipating the work to be held between May and June 2020.

Soil Remediation

In most areas of the Site the soil will be excavated to a depth of 0.15 m bgs. All excavation will be directed by qualified CRD staff, working directly with the Proponent. The Proponent must have sufficient experience in forensic excavating in a manner that will ensure elevations are consistently checked and managed to eliminate over-excavating and increasing soil volumes. Metals, particularly leachable lead is sporadic throughout the contaminated portion of the Site. Delineation of the hazardous waste soil from the soil exceeding WLN standards will likely be unsuccessful. The CRD will look to the Proponent, during the RFP stage, for strategies to remediate this Site in the most cost-effective manner and to implement methods to ensure no over-excavating occurs (i.e. continual surveying).

Excavated soil may be staged onsite (i.e. hot loading is not necessary).

Soil stabilization techniques will be considered if financially beneficial.

When developing a soil excavation plan, reduction in costs should be prioritized over reducing the schedule.

The Contractor is responsible for the transportation and disposal of soil to a facility provincially licensed to accept the soil as classified, including the use of license to transport (LT) trucks when necessary.

The Contractor will be responsible for decontamination of trucks and equipment including supply of equipment and resources (i.e. water and electricity) prior to leaving the Site. Note there are no utilities or water supply to the Site. Cell phone coverage in the area is not reliable. Radio access with the CRD GVWSA gatekeeper for regular safety check-ins is necessary on CRD supplied radios.

Commercial Terms

For the Project, Services will be procured via CRD standard Contract at CRD's sole discretion if and as required. The amount, timing and terms and conditions of payments will be set out in a subsequent Request for Proposal (RFP).

For more information please contact:

Lisa Sykes, Contaminated Sites Specialist
Capital Regional District
Environmental Protection
625 Fisgard Street
PO Box 1000
Victoria, British Columbia V8W 2S6
Email: lsykes@crd.bc.ca

RFQ CLOSING DATE:                     March 4, 2020 at 16:00 (Local Time)


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