PROBLEM AND OPPORTUNITY STATEMENT MUNICIPAL CLASS ENVIRONMENTAL ASSESSMENT FOR UPGRADES TO THE AIRPORT WATER SUPPLY FACILITY The Problem and Opportunity Statement defines the principal starting point when beginning a Municipal Class Environmental Assessment Study and assists in defining the scope of the project. The problem and opportunity statement for “Municipal Class Environmental Assessment for Upgrades to the Airport Water Supply Facility” is defined as follows: The Airport Road Pumping Station is located at 9 Airport Road in the County of Brant, and is the primary source of potable municipal water supply and fire flow protection for the local area. Planned development in the area will increase the water supply and pumping demands including additional water storage requirements to continue to provide adequate potable water distribution and fire protection requirements, while following the Ministry of Environment (MOE) guidelines. The water supply and pumping station capacity must be increased to meet future water flow demands. Some watermains may be undersized for future water flow, and may require upgrades. Water storage facilities may need to be expanded to meet MOE guidelines. Storage alternatives being considered include a partially buried reservoir, at-grade standpipe and an elevated tank. MUNICIPAL CLASS EA PLANNING AND DESIGN PROCESS NOTE: This flow chart is to be read in conjunction with Part A of the Municipal Class EA PHASE 1 PIC #1 held May 15, 2014 We are here PIC #2 PHASE 2 PHASE 3 PHASE 4 PHASE 5 EXISTING AND FUTURE WATER REQUIREMENTS MUNICIPAL CLASS ENVIRONMENTAL ASSESSMENT FOR UPGRADES TO THE AIRPORT WATER SYSTEM Parameter Existing System Requirements for Ultimate Development Permit to Take Water, Maximum Flow Rate 26.5 L/s 62.5 L/s Permit to Take Water, Total Daily Volume Limit 2,290 m3 5,400 m3 Maximum Day Demand 8.3 L/s 62.5 L/s Average Day Demand 3.0 L/s 22.7 L/s Peak Hour Demand 12.1 L/s 90.9 L/s Brant Fire Flow for 2 hour special case industrial 75.8 L/s 75.8 L/s Water Supply Water Demand1 Pumping Capacity Pumping Capacity 103 L/s, 2 138.3 L/s, 3 90.9 L/s, 4 Storage Capacity System Storage Capacity 287 m3 2,370 m3, 5 1. Water demands for Ultimate Development are based on County of Brant Development and Engineering Standards, March 2013 (D&ES). Existing water demands are based on current water usage data with peaking factors derived from the County of Brant Development and Engineering Standards. 2. Pumping capacity is based on operate of two high lift pumps at maximum capacity. 3. Ultimate pumping capacity is based on maximum day flow plus fire flow within a closed pressure system (i.e. no elevated tank). 4. Ultimate pumping capacity is based on peak hour flow within an open pressure system (i.e. floating storage with elevated tank). 5. Recommended storage capacity is based on Ontario Ministry of Environment’s ‘Design Guidelines for Drinking-Water Systems, 2008’ based on emergency, fire and equalization storage WATER SUPPLY ALTERNATIVES EVALUATION MUNICIPAL CLASS ENVIRONMENTAL ASSESSMENT FOR UPGRADES TO THE AIRPORT WATER SYSTEM Category Alternative 1a Do Nothing Criteria Alternative 1b Construct production well at airport pump station site Alternative 1c Construct additional well(s) on a separate property from the existing well Aesthetics of final system Socio-Cultural Environment No change to aesthetics. Impact on First Nations and Métis No impact Land Use Not consistent with the County’s official plan No significant change to aesthetics Existing pump station is located within an area subject to land claim. A new production well at the same location as the existing well is not anticipated to impact Aboriginal interests, and this will be confirmed through ongoing communication with First Nation and Métis communities. No impact New well pump and piping connections are required, but will not result in significant truck traffic, dust, or noise Site is in an industrial area, so disturbance to residents will be minimized Construction Impacts No construction required Public Health and Safety Natural Environment Potential Water Supply Impacts Vegetation No impact Designated Natural Features No impact Current system does not meet long term water supply requirements Impact on Terrestrial and Aquatic Wildlife and Species at Risk No impact Surface Water No impact Groundwater No impact The existing well does not have the capacity to supply the Ultimate Development in the Airport area. No impact on natural upland or wetland vegetation communities. There is no vegetation on the existing airport pumping station site that would need to be removed. No designated natural features in potential development area No impact Need to determine any potential for impacts on Whiteman’s Creek to the north during further pump tests Potential impacts on groundwater are to be investigated further before proceeding with this option. Well testing is underway. Water Supply and Treatment Technical Considerations Financial Considerations Further well testing is required to determine potential impact on existing private wells Likely to provide sufficient water supply for new development in area Preliminary testing indicates that sufficient water is available to support Ultimate Development Test well at the required location is already drilled Proposed production well is in close proximity to reservoir site, so minimal raw watermain is required. Operations and Maintenance Increased operation and maintenance costs as equipment ages Two well pumps would need to be maintained rather than one. Added redundancy Consistency with legislation, regulations, and guidelines No additional permitting requirements. Updated Permit To Take Water, and drinking water license are required. No capital cost to implement, but long term cost to County as development is not possible without establishing a new water supply. Lowest cost to implement, as no new land must be acquired Costs OVERALL RANKING NOT RECOMMENDED LEGEND Low Impact (most preferred) Low to Moderate Impact Moderate Impact Moderate to High Impact High Impact (least preferred) RECOMMENDED Depending on location selected for the new well, associated well pump house may be visible from the road. Minimize impact by setting structure back from road and/or using landscape buffer/screening plantings A new production well is not anticipated to impact Aboriginal interests, and this will be confirmed through ongoing communication with First Nation and Métis communities. Depending on the proposed well location, an archaeological assessment will be undertaken to address cultural heritage concerns. It is not anticipated that any land use designation will need to change, but this will depend on the availability of land. New well needs to be drilled, along with associated pumping and disinfection equipment. Depending on location selected, construction may occur close to or on neighbouring properties, and may cause temporary disturbance in the form of noise, and visual impact. Temporary road closure may be required if new well is located on the south side of Colborne St W, as new watermain must pass under road. Impact to existing wells is unknown; further testing is required Likely to provide sufficient water supply for new development in area Potential impact on natural upland or wetland vegetation communities. Potential for some minor removal of park vegetation (sod, landscape plantings) if the well is drilled within the County owned park. Impacts may be avoided/minimized by selecting an area with little or no vegetation if possible. No designated natural features in potential development area There is a potential to encroach on the potential habitat of Eastern Meadowlark and Bobolink, designated as Threatened Species (open fields of long grass,/hay > 5 ha). Care must be taken during detailed design to avoid any nesting areas or other spaces used by these species. MNR will be consulted regarding potential future targeted surveys or Endangered Species Act permit requirements. Need to determine any potential for impacts on Whiteman’s Creek to the north during further pump tests Potential impacts on groundwater are to be investigated further before proceeding with this option. Greater uncertainty about the availability of water at alternate sites within the Airport Urban Development area New test well required Water from the offsite well would be conveyed to the Airport Pump Station site for treatment. Because existing well and new well would be at different locations, more travel is required by the operator to monitor the system and maintain the well pumps as required. Updated Permit To Take Water, and drinking water license are required. May require road occupancy permit, or zoning changes depending on location. Highest capital cost, due to land acquisition requirements, and additional watermain to the Airport Pump Station site. NOT RECOMMENDED WATER STORAGE AND PUMPING ALTERNATIVES EVALUATION MUNICIPAL CLASS ENVIRONMENTAL ASSESSMENT FOR UPGRADES TO THE AIRPORT WATER SYSTEM Category Socio-Cultural Environment Public Health and Safety Alternative 2a Do Nothing Criteria Aesthetics of final system No impact Impact on First Nations and Métis No impact Land Use Prevents development of lands in accordance with the County’s official plan Construction Impacts No impact Potential Water Supply Impacts Does not meet fire storage and flow requirements for future development Vegetation No impact No impact No impact Alternative 2b Increase In-ground Storage Capacity Designated Natural Features Impact on Terrestrial and Aquatic Wildlife and Species at Risk Surface Water Groundwater Greatest visual impact, due to height of structure Not anticipated to impact First Nations or Métis interests although this will be confirmed through ongoing communication with First Nation and Metis communities. Proposed reservoir location is designated for the same land use as the Airport Pump Station site, so no impact Not anticipated to impact First Nations or Métis interests although this will be confirmed through ongoing communication with First Nation and Metis communities. Potential locations are consistent with land use policies. Some noise, dust and truck traffic disturbance during construction Meets required fire storage and flow requirements for future development No impact on vegetation. None of the areas being considering for the reservoir location have any vegetation that would be need to be removed. No designated natural features in potential development area. Trees exist along portion of Colborne St W on south side, and along the southern boundary of the Employment Lands area, as designated in the official plan No designated natural features in potential development area Area may be habitat of Eastern Meadowlark or Bobolink, so consultation with MNR should be undertaken Area may be habitat of Eastern Meadowlark or Bobolink, so consultation with MNR should be undertaken Area may be habitat of Eastern Meadowlark or Bobolink, so consultation with MNR should be undertaken No impact No impact No impact No impact No impact No impact No impact No impact Permit to Take Water associated with existing well does not have sufficient capacity for future development demand and fireflow Proposed reservoir site is close to proposed new well at the Airport Pump Station site, so the raw watermain length would be relatively short. Flow between two reservoirs could be by gravity Supply location does not affect the elevated storage option, as water is pumped from the high lift station to the tower, and not directly from the well as in Alternative 2b and 2d. Proposed standpipe site is close to proposed new well at the Airport Pump Station site, so the raw watermain length would be relatively short. Fire flow capacity does not need to be pumped. All fire flows can be met by gravity flow out of the elevated tank. Pumping station only needs to be sized for ultimate peak hour flow (fire flow is derived from elevated tank). Water system would be classified as “open” pressure system with floating storage. Therefore, firm pumping capacity can be maintained with only one largest pump out of service in accordance with MOE guidelines. Location of elevated tank more flexible than with in-ground storage option. Standby power only needs to be sized for maximum day flow. Water tower could have secondary function as a communications tower Elevated tanks stabilize system pressures. Highest elevation in the area, which is generally good location for elevated tank, is located farthest from the area of industrial fire demand, requiring longer water main sized for peak flow conditions. Fire flow capacity plus maximum day demand will need to be pumped. Standby power generator would need to be sized for full fire flow capacity. Water system would remain a closed pressure system. Firm pumping capacity would need to be achieved with two largest pumps out of service in accordance with MOE guidelines. Smaller footprint than a buried reservoir. Maintains a higher minimum hydraulic grade line than a buried reservoir (i.e. if all pumps are off or have failed). Improved pumping station operation with flooded pump suctions. Existing reservoir storage and pumping station capacity are undersized to meet demand of ultimate development Technical Considerations Water Distribution Consistency with legislation, regulations and guidelines Financial Considerations Costs OVERALL RANKING Moderate visual impact; less than elevated tower, and greater than buried reservoir Not anticipated to impact First Nations or Métis interests although this will be confirmed through ongoing communication with First Nation and Metis communities. Proposed standpipe location is designated for the same land use as the Airport Pump Station site, so no impact Operations and Maintenance Reservoir will be buried and grass covered. Water Supply and Treatment Water Pumping and Storage Alternative 2d Install standpipe Natural Environment Alternative 2c Install elevated water storage tank Some existing watermains would require upgrades to allow for future development flows Increased operation and maintenance cost as equipment ages No impact No capital cost to implement, and operating costs will not change NOT RECOMMENDED LEGEND Low Impact (most preferred) Low to Moderate Impact Moderate Impact Moderate to High Impact High Impact (least preferred) Some noise, dust and truck traffic disturbance during construction Meets required fire storage and flow requirements for future development Fire flow capacity plus maximum day demand will need to be pumped. Standby power generator would need to be sized for full fire flow plus maximum day flow capacity. Water system would remain a closed pressure system. Firm pumping capacity would need to be achieved with two largest pumps out of service in accordance with MOE guidelines. Will likely require additional neighbouring lands not currently owned by the County. Location must be within close proximity to supply well Some existing watermains would require upgrades to allow for future development flows System pressures are controlled through pump operation. Very similar maintenance requirements to existing system Updated Permit To Take Water, and drinking water license are required. Moderate capital and operating cost for storage, but higher cost for pump station upgrades NOT RECOMMENDED Tank will need to be repainted every 10 to 20 years depending on the quality of coatings and exposure to the elements. Updated Permit To Take Water, and drinking water license are required. Will require Aeronautical Assessment for Obstruction Marking and Lighting from Transport Canada Highest capital and operating cost for storage, but lower cost for pumping station upgrades RECOMMENDED Some noise, dust and truck traffic disturbance during construction Meets required fire storage and flow requirements for future development No impact on vegetation. None of the areas being considering for the standpipe location have any vegetation that would be need to be removed. No designated natural features in potential development area Some existing watermains would require upgrades to allow for future development flows System pressures are controlled through pump operation. Standpipe will need to be repainted every 10 to 20 years depending on the material of construction and exposure to the elements Updated Permit To Take Water, and drinking water license required. May require Aeronautical Assessment for Obstruction Marking and Lighting from Transport Canada depending on height Lowest capital and operating cost for storage, but higher cost for pump station upgrades NOT RECOMMENDED EVALUATION PROCESS AND RECOMMENDED SOLUTION MUNICIPAL CLASS ENVIRONMENTAL ASSESSMENT FOR UPGRADES TO THE AIRPORT WATER SYSTEM Alternative 2a: Do Nothing Alternative 1a: Do Nothing Alternative 1b: Construct Production Well at Airport Pump Station Site Alternative 2b: Increase In-ground Storage Capacity Alternative 1b Recommended* Alternative 2c: Install Elevated Water Storage Tank Alternative 1c: Construct additional well(s) on a separate property from the existing well Step 1: Water Supply Alternatives 1b and 2c Recommended* Alternative 2d: Install Standpipe Step 2: Water Storage and Pumping *The alternatives recommended provide the technically preferred solution prior to public consultation