Brock West and Brock North Landfills Hydrogeological Services (2009 To 2012)
Commodity: Professional Services, Environmental services
Description: Brock West and Brock North Landfills Hydrogeological Services (2009 To 2012)
The City of Toronto (City) requires the provision of hydrogeological services for the Brock West Landfill site and the Brock North Landfill (the Project).
Issue date: May 15, 2009 Closing date: June 10, 2009
at 12:00 Noon
Pre-bid meeting: Mandatory Site Meeting:
Date: Wednesday, May 27, 2009
Location: Brock West Landfill Site Office, west end of 3rd Concession Road, 1 km west of Brock Road, just before the power plant
Buyer: Phillips, Allison Phone number: 416-397-7251
Email: firstname.lastname@example.org Location: City Hall, 19th Floor West Tower
Client Division: Technical Services
Non-refundable document fee:
Scope of work:
The Scope of Work includes but is not limited to the following.
.1 The City of Toronto (City) requires the provision of hydrogeological services for the Brock West Landfill site and the Brock North Landfill (the Project).
.2 The Brock West Landfill Site (Brock West) is located about one kilometer west of the Third Concession and Brock Road in Pickering, Ontario. The Brock North Landfill Site (Brock North) is located about one kilometer east of the Fifth Concession and Brock Road in Pickering, Ontario.
.3 The Brock West Landfill was landfilled between 1975 and 1997. The landfill accepted more than 18 million tones of primarily municipal solid waste, but also some activated sludge. A landfill gas collection and utilization facility has been in operation since 1991.
.4 The Brock North Landfill received approximately 100,000 tonnes of municipal waste in late 1977 and early 1978. However, this was was excavated and moved to the Brock West landfill between December 1996 and March 1997. The City had been required to keep annual hydrogeological reports on file for the site but the current hydrogeological consultant for the City has recommended that there is no longer a need to conduct ongoing monitoring and reporting. The City intends to request of the MOE that such monitoring and reporting be discontinued.
.5 The perpetual care of the Brock West Landfill is the responsibility of the City. It is governed by a Ministry of the Environment (MOE) Certificate of Approval (C of A) which among other things requires the preparation of annual hydrogeological monitoring reports. The City is required to submit these reports to the MOE, City of Pickering and Durham Region by the end of the following calendar year. The site is also governed by a Permit To Take Water for the operation of the purge well system.
SCOPE OF WORK OVERVIEW
.1 In general, the approximate scope of this project includes the following. This is included to provide the Proponent with a general understanding of the City’s intent for this project. The Consultant will provide hydrogeological services for the Brock West Landfill Site for the years 2009, 2010, 2011 and 2012 (and will manage the 2012 data and write the 2012 annual report during the first six months of 2013) as set out in Section 3, Scope of Work. The Consultant will also provide some services related to the Brock North Landfill as required. The overview of the scope of work includes:
a. Review of hydrogeological and landfill gas issues to date for the Brock West site
b. Collect and manage all required data for the Brock West site, primarily the laboratory analysis from the City water laboratory of water samples collected by City staff and landfill gas data collected by City staff
c. Provide direction to the City landfill monitoring staff with respect to the monitoring program
d. Produce four annual hydrogeological monitoring reports for the Brock West site (with a section on landfill gas issues) for the years 2009 to 2012, inclusive. Each report will be produced by December 31st of the following year that is being reported, but the 2012 report will be produced by June 30th, 2013.
e. Special reports as required
f. Response to reviews/ report finalizing
g. Legal and Development Advisement
h. Project management and Meetings
i. Annual site inspections; and
j. Construction supervision of the installation of new monitoring wells
.2 Note: the Consultant is required to provide all necessary health & safety equipment while at the landfill, including that required for confined space entry, if required.
The timeline for this project will be July 1, 2009 to June 30, 2013.
3.3 DETAILED REQUIREMENTS
.1 At the beginning of the Project, the Consultant shall have its project manager and at least one other key staff member perform the following tasks:
- Review all the City’s relevant correspondence files and reports on the Brock West and Brock North Landfill Sites. There are in excess of 20 reports and 20 file folders of correspondence and technical data; tour and inspect all relevant areas of the site; and
- meet with City staff in order to develop a thorough understanding of the functioning of the site and its history with respect to this scope of work.
This review shall be carried out as expeditiously as possible. It shall be extensive enough that the Consultant will be able to effectively represent the City in negotiations with the Ministry of the Environment (MOE) and their consultant and any hearings and/or consulting matters which arise respecting this scope of work.
.2 The Consultant shall be responsible for consulting and reporting services in connection with the hydrogeology of the Brock West Landfill Site for the years 2009 (starting July 1, 2009), 2010, 2011 and 2012 to enable the City to meet its obligations under the MOE’s Provisional Certificate No. A390402. The collection of data and annual report for each calendar year is typically done during the following calendar year. The 2007 annual report will be completed as part of the current consultant’s contract prior to the end of 2008. The collection of data and report writing for 2008 report will be done as part of this Scope of work during 2009. However, from January 1, 2013 to June 30, 2013, the Consultant will be responsible for Section 22.214.171.124, Sampling and Data Collection, Section 126.96.36.199, Data Management, and Section 188.8.131.52, Annual Monitoring Report, only, in order to produce the 2012 Annual Monitoring Report, but will not be responsible for the other subsections of 3.3.2 during this period. For this reason the contract period will be 48 months. The areas of responsibility include:
.1 Sampling and Data Collection Program (Brock West)
Review and advisement to City of Toronto staff regarding data collection and sampling procedures with respect to all gas probes (approximately 50 monitored monthly), groundwater, surface water and leachate, landfill gas condensate sampling locations at wells, purge wells, stream gauging stations and pumping stations (over 150 locations and over 350 water samples per year). Site inspection of sampling protocols. Review of sampling and monitoring program and submission to the Ministry of Environment for approval. Liaison with City of Toronto's Dee Avenue Lab to ensure that approved analysis methods are utilized and appropriate QA/QC methods followed.
.2 Data Management (Brock West)
Collection and management of data from all gas probes (approximately 50 monitored monthly), groundwater, surface water and leachate, landfill gas condensate sampling locations at wells, purge wells, stream gauging stations and pumping stations (over 150 locations and over 350 water samples per year). Convert data from the City of Toronto's Dee Avenue Laboratory spreadsheet format to database format. Enter detailed purge well inspection data from City of Toronto field notes. Modify instrument location and measuring point details as required.
.3 Annual Monitoring Report (Brock West)
Review all groundwater, surface water and leachate quality and level data and subsurface landfill gas migration data to determine the effect on the environment. Review purge well performance to determine the impact on the hydrogeologic system including private water supply wells, adjacent properties and the two adjacent rivers. Delineate the extent of groundwater contamination at the site, determine the source and clearly define all necessary or possible mitigation measures. Define groundwater flow in all aquifer units at the site. Assess the extent and effectiveness of the capture zones of the purge well systems. Assess gas probe readings to make any necessary recommendations regarding potential subsurface landfill gas migration. Produce a detailed report describing the findings of the above, including potentiometric surface maps (all aquifer units), plume maps, hydrostatic sections, purge well data summaries and all historical water quality and water level data and gas probe data, in both graphical and tabular format. Annual reports will be required the year following the monitoring year. Therefore, annual reports will be required for four years, reports for years 2009 to 2012, inclusive. Note that the report for 2008 is currently being produced under an agreement with the consultant that was engaged at the site during 2008.
.4 Purge Well Inspection and Performance and Permit To Take Water Reports (Brock West)
a) Conduct purge well inspections and performance tests semi-annually for years 2009 to 2012, inclusive. Plot all step test data from semi-annual purge well inspections. Assess purge well performance changes and recommend required maintenance actions. Provide an annual purge well monitoring report each year following the monitoring year. Therefore, reports will be required for 2009 to 2012, inclusive. Note that the consultant that was engaged during 2008 is currently producing the 2008 purge well report.
b) Assess impact and efficiency of purge well systems in relation to water levels and stream baseflow. Compile the data as required by the Permit to Take Water and produce any required reports for submission to the Ministry of the Environment, including uploading data to the Ministry’s database.
.5 Special Reports (Could apply to either Brock West or Brock North or both sites)
Assess unique or urgent situations (ie. Spills, Site Boundary Impacts, plumes) to determine potential sources(s) and significance with regards to the monitoring requirements and site boundary compliance. Produce required reports for submission to the Ministry of the Environment (scope of reporting to be decided with City of Toronto staff).
In 2009, the City will require the Consultant to prepare a letter report to the City to be forwarded to the MOE recommending the discontinuation of monitoring and reporting at the Brock North landfill site and to provide responses to any questions the MOE may have related to this matter. Assume that this will require 40 hours of work in 2009 for the Consultant’s project manager.
Also in 2009, the City will require the Consultant to prepare modeling studies for various alternate approaches, conceptual designs and associated application to the MOE with respect to supplementary measures to control the southern groundwater plume. Assume that this will require 400 hours of work for the Consultant’s project manager and 400 hours of work for intermediate staff in 2009.
For years 2010 to 2012, inclusive, assume special reporting will involve 100 hours of work per year by the Consultant’s project manager and 100 hours per year by intermediate staff.
.6 Responses to Reviews/ Report Finalizing (Brock West)
Review and respond to comments from the Ministry of the Environment on the Brock West Annual Water Monitoring Reports.
.7 Legal and Development Advisement (Could apply to either Brock West or Brock North or both sites)
Provide an assessment of the potential impacts of proposed off-site development on Site Boundary Compliance assessments and operation of site mitigation controls. Provide advice regarding site hydrogeological issues. Assume 20 hours per year for years 2009 to 2012, inclusive, by the Consultant’s project manager.
.8 Project Management and Meetings
a) Allowance for ongoing project management;
b) three site progress meetings per year for years 2009 to 2012, inclusive, and one for 2013, attended by the project manager and one other key team member at the Brock West Landfill Site. Consultant will produce minutes for all meetings; and
.9 Site Inspection and Site Systems Maintenance Supervision (Brock West)
a) Allowance for on-site investigation of hydrogeological issues and semi annual purge well performance testing (stepped-rate tests).
b) Preparation of tender documents, addenda, answering questions, review tenders, recommend a contractor and provision of field supervision for the rehabilitation of existing purge wells and construction of new replacement and/or infill purge wells as required. Assume 4 purge wells rehabilitated and one new purge well per year.
c) Design and supervise additional and replacement observation wells as required. The drilling will be conducted by the drilling contractor retained by the City on open order. Assume three new or replacement observation wells per year.
d) Conduct annual slope stability monitoring for years 2009 to 2012, inclusive on the site’s south slope, by qualified professional including the supply of required equipment for the monitoring of the site’s 4 inclinometers and their associated pneumatic piezometers and standpipe piezometers. Preparation of annual slope stability monitoring reports (letter reports) for each to be included in the corresponding site annual monitoring reports.
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for additional information.
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