Breslau Settlement Plan Preliminary Servicing and Stormwater Management Report December 2015 Prepared by: SCS Consulting Group Ltd 30 Centurian Drive, Suite 100 Markham, ON, L3R 8B8 Phone 905 475 1900 Fax 905 475 8335 Project No: 1463
TABLE OF CONTENTS Page 1.0 INTRODUCTION... 1 1.1 Study Area... 1 1.2 Background Information... 2 2.0 STORMWATER MANAGEMENT... 3 2.1 Existing Drainage... 3 2.2 Stormwater Runoff Control Criteria... 3 2.3 Proposed Storm Drainage... 5 3.0 SANITARY SERVICING... 6 3.1 Recent/Current Sanitary Sewer Studies... 6 3.2 Cross Border Sanitary Flow Allocation Review... 7 3.3 Capital Upgrades Required to Achieve Full Capacity of Pumping Stations... 8 3.3.1 Victoria Street Pumping Station... 8 3.3.2 Breslau Pumping Station... 9 3.3.3 Summary of Pumping Station Capital Upgrades Required... 10 3.4 Sanitary Piping Constraints... 10 3.5 Residential Flow Generation Rate... 13 3.6 Settlement Plan Servicing Capacity Analysis... 14 Approach 1: Service Full Buildout of Settlement Plan with Provincial Density Targets... 14 Approach 2: Eliminate Servicing Allocation to Industrial and Infill Land Uses... 15 Approach 3: Determine a Maximum Residential Population to be Serviced... 16 3.7 Conclusions - Sanitary Servicing... 17 4.0 WATER SUPPLY AND DISTRIBUTION... 18 4.1 Existing Water Distribution... 18 4.2 Water System Optimization for the Breslau Secondary Plan Area... 19 4.3 Hopewell Creek Extension of Services Class Environmental Assessment... 20 5.0 UTILITY CONSIDERATIONS... 21 Project No. 1463 Page i
LIST OF TABLES Table 2.1 Stormwater Runoff Control Criteria LIST OF FIGURES Figure 1.1 Figure 2.1 Figure 2.2 Figure 3.1 Site Location Plan Existing Storm Drainage Plan Proposed Storm Drainage Plan Preliminary Sanitary Servicing Plan LIST OF APPENDICES Appendix A Appendix B Sanitary Servicing Alternatives Recommended Water Servicing Alternative Maps Project No. 1463 Page ii
1.0 INTRODUCTION SCS Consulting Group Ltd. has been retained by the Township of Woolwich to prepare a Preliminary Servicing and Stormwater Management Report for the Breslau Settlement Plan. 1.1 Study Area The study area is approximately 560 ha in size and is located south of Highway 7 and east of the Grand River, (see Figure 1.1). Figure 1.1 Site Location Plan The existing subject lands are comprised of existing residential and commercial developments, and agricultural land and open space areas. The site is located within the Grand River watershed in the Township of Woolwich. Project No. 1463 Page 1
The proposed development consists of the following land uses: low density residential, medium density residential, high density residential, commercial, employment, parks, open space, sanitary pumping station, SWM pond blocks, and proposed roads. 1.2 Background Information In preparation of the site servicing and SWM strategies, the following design guidelines were referenced: Region of Waterloo and Area Municipalities Design Guidelines and Supplemental Specifications for Municipal Services (January 2015); Grand River Conservation Authority Technical and Engineering Guidelines for Stormwater Management Submissions (December 2014); and Ministry of Environment (MOE) Stormwater Management Planning and Design Manual (March 2003). Project No. 1463 Page 2
2.0 STORMWATER MANAGEMENT 2.1 Existing Drainage The Breslau Settlement Plan study area is located within the catchment areas of the Grand River, and Hopewell Creek, Breslau Drain #1, Randall Drain, and Chilligo Creek which are all subwatersheds of the Grand River, as illustrated on Figure 2.1. The majority of the northern portion of the study area drains to Hopewell Creek, with a small pocket in the northeast corner that drains to Chilligo Creek. The middle and westerly portions of the study area generally drain to the Grand River. The southerly portion of the study area drains to the Breslau Drain #1, and a small portion of the eastern portion of the study area drains to the Randall Drain. The roads in many parts of the existing community of Breslau are rural and stormwater is conveyed via ditches and culverts. In the more recently developed areas (i.e. the Hopewell Heights and Riverland communities), the roads are urban and drainage is conveyed by curbs, gutters, catchbasins and storm sewer systems to various outlets. There are several existing stormwater management (SWM) ponds servicing portions of the existing developed areas (refer to Figure 2.1). Specifically, there are two (2) wet stormwater ponds that service the Hopewell Heights residential subdivision (one east of Fountain Street and one to the west). These ponds outlet to Hopewell Creek. There is a wet stormwater pond located immediately east of the Grand River in the Riverland residential subdivision that currently services the Phase 1 Riverland development and outlets to the Grand River. There is also an existing on-line pond (referred to as the Mill Pond) on Hopewell Creek between the Breslau Dam and Woolwich Street South. Several of the existing industrial properties within the study area have private stormwater controls on-site. 2.2 Stormwater Runoff Control Criteria The SWM criteria for the study area are required to be consistent with the Ontario Ministry of the Environment s Stormwater Management Planning and Design Manual (2003, the requirements of the Grand River Conservation Authority (GRCA) and the requirements of the Township of Woolwich. The GRCA is currently undertaking the East Side Subwatershed Study for Hopewell Creek, Chilligo Creek, Freeport Creek, Randall Drain and Breslau Drain #1. The Phase 1 component of the subwatershed study (Characterization of the Subwatersheds Report) is complete and Phase 2 is underway. Part of the Phase 2 work involves providing targets and recommendations for future development within each of the subwatersheds. A Master Drainage Plan will be completed as part of the East Side Lands (Stage 2) Master Environmental Servicing Plan and Community Plan, however, it focuses on Stage 2 lands, which are outside of (do not include) the Breslau Settlement Plan area, with consideration for broader subwatershed objectives. Project No. 1463 Page 3
Therefore, the SWM criteria recommended for the study area is summarized below in Table 2.1: Table 2.1: Stormwater Runoff Control Criteria Criteria Quantity Control Control Measure Control proposed peak flows to existing peak flows for the 2 through 100 year storm events. Note for drainage with a direct outlet to the Grand River, quantity control is not required. Quality Control Direct Outlet to Grand River: Provide MOE Normal (Level 2) Protection for 70% TSS Removal Erosion Control Water Budget All Other Watercourses: Provide MOE Enhanced (Level 1) Protection for 80% TSS Removal. Detention of the 25 mm rainfall runoff over a minimum 24 hour period, or as determined through an erosion analysis of the receiving downstream watercourse. An overall water balance to be provided in accordance with the objectives of the GRCA, Region of Waterloo and the Township of Woolwich Minor System Storm sewers are to be designed using the Rational Method for the 5 year design storm using the City of Kitchener Intensity-Duration-Frequency curves and a minimum time of concentration of 10 minutes. Other storm sewer design criteria include: a) Minimum Pipe Diameter 300 mm b) Manning's n: o smooth wall pipes 0.013 o concrete box culverts 0.015 o corrugated metal with paved invert 0.020 o corrugated metal 0.024 c) Minimum full flow velocity 0.75 m/s d) Maximum full flow velocity 6.0 m/s e) Minimum cover 1.5 m Project No. 1463 Page 4
Major System Major system flows (up to the 100 year storm event) shall be safely conveyed within the municipal right-of-way or designated overland flow route(s). Erosion and Sediment Control Erosion and sediment control (ESC) plans that will comply with the best management practices outlined in the Erosion and Sediment Control Guidelines for Urban Construction by Greater Golden Horseshoe Area Conservation Authorities, December 2006 shall be provided. 2.3 Proposed Storm Drainage Stormwater management is to be provided for all new development areas, either by on-site controls/treatment measures, or by communal end-of-pipe facilities, or a combination of both including: the employment/industrial lands in southern portion of study area on either side of Fountain Street North the area bound by Maders Lane to the south, the existing development on the east side of Woolwich Street South to the west, the railway to the north and Fountain Street to the east the area bound by the railway to the south, Woolwich Street South to the west, Hopewell Creek to the north and Fountain Street to the east, and for the lands north and south of Victoria Street between the Grand River and Spitzig Road The proposed drainage concept is illustrated on Figure 2.2. The SWM concepts for these areas will be further refined at the Draft Plan or Site Plan stage. Riverland Development (Empire Homes) A portion of the undeveloped Riverland Area 2 lands are within the catchment boundaries of drainage and stormwater management infrastructure that were previously constructed to support the Riverland Area 1 Subdivision (Stages 1 and 2) development. The remaining portion of the Riverland Area 2 lands will be serviced by a proposed SWM facility at the west limit of the site south of an existing wetland. Thomasfield Homes Development There are several SWM facilities proposed to service the Thomasfield Homes Development lands, while several areas are proposed to be treated with other alternative on-site SWM control measures. Project No. 1463 Page 5
3.0 SANITARY SERVICING The municipal sanitary sewage collection and treatment system is a two-tiered responsibility. The Region owns and operates (under contract) the municipal wastewater treatment plants. The local municipalities own and maintain the collection system including pumping stations. There is an existing 450 mm diameter sanitary sewer located on the east side of the Grand River at the Victoria Street bridge with a 600 mm diameter sanitary sewer crossing the river to a 675 mm diameter sanitary sewer on the west side of the river to the Breslau Sanitary Pumping Station (BSPS). This sewer was constructed in 2003/2004 to service the Hopewell Heights (Thomasfield) subdivision, the rural settlement of Breslau, and the Riverland (Empire) subdivision. The sewer drains west/southwest across the Grand River along the south side of Victoria Street North, under the Grand River and outlets into the Victoria Street Sanitary Sewage Pumping Station (VSPS), located west of the Grand River at Shirley Drive and Victoria Street North, in the City of Kitchener. Within the VSPS site, sanitary flows are pumped from the Grand River sanitary sewer crossing to the VSPS pumping station via the Breslau Sanitary Pumping Station (BSPS), a 3.0 m diameter wet well with two submersible pumps. The VSPS conveys the flow through the Manchester- Montgomery Trunk Sanitary Sewer System in Kitchener to the wastewater treatment plant (WWTP). Local sanitary sewers service the residences internal to the Hopewell Heights and Riverland subdivisions. The local Breslau sanitary sewer system is under the jurisdiction of the Township of Woolwich. The BSPS, VSPS and downstream trunk sanitary sewer system are under the jurisdiction of the City of Kitchener. The WWTP is under the jurisdiction of the Region of Waterloo. 3.1 Recent/Current Sanitary Sewer Studies Wastewater Treatment Master Plan The Region of Waterloo completed a Wastewater Treatment Master Plan (WWTMP) in 2007 which identified the most appropriate outlet for the East Side Community wastewater to be the Kitchener wastewater treatment plant (WWTP). The East Side Community are the lands east of the Grand River to Beaverdale Road in the South and Shantz Station Road in the North, and North to South from approximately Victoria Street North to Highway 401. In the Region s WWTMP, upgrades are proposed to include 18,200 m 3 /d from the East Side Community. However, due to adjustments to the East Side boundary by the Region and projected population revisions, the Kitchener WWTP may need to allow for East Side wastewater flows of approximately 31,000 m 3 /d. East Side Servicing Review The Region of Waterloo retained AECOM Canada Ltd. to evaluate wastewater servicing opportunities and constraints for the East Side Community. The East Side Servicing Review Technical Memorandum was completed by AECOM in December 2009. Project No. 1463 Page 6
The Technical Memorandum concluded that the total mature state flow from the East Side Community would be 31,000 m 3 /s. It also concluded that, in the long-term, it is possible to service a large portion of the East Side Community by gravity to one large pumping station that could be owned and operated by the Region. The pumping station will outlet to the Kitchener WWTP. Small local pumping stations may be required in low lying areas. The two alternative locations identified for the large pumping station outline maximum trunk sewer depths of approximately 12 metres and 19 metres respectively. A preferred trunk sewer alignment should be identified in a Master Servicing Plan for the East Side Community undertaken by the local municipalities. The first phases of development within the East Side Community will be from Cambridge and progress to the north to Breslau. Breslau is located at the upstream end of this system, and schedule. The current schedule under the Region Official Plan estimates that East Side services will not reach Breslau until after 2031. However, the existing Village of Breslau is currently serviced by the VSPS, BSPS and sanitary sewer collection system. This report will review the opportunities and constraints to service the Breslau Settlement Plan with increased capacity available to the Township from the City of Kitchener at the Victoria Street SPS. The Victoria Street SPS has limited capacity that cannot service the full proposed buildout of the settlement plan as will be seen below. Development in Breslau beyond the capacity of the Victoria Street SPS limitations will ultimately be serviced by the East Side Lands sanitary servicing system. 3.2 Cross Border Sanitary Flow Allocation Review A Cross Border Servicing Agreement (CBSA) for Sewage Collection was established in 2003 between the City of Kitchener and the Township of Woolwich. The agreement provided the Township of Woolwich with the right to access 25% of the flow capacity to the Victoria Street SPS in Kitchener, quantified in the CBSA as a peak flow of 94 L/s, and an average daily flow of 45 L/s. This flow was allocated to Woolwich from Kitchener as 1250 residential units and 3 hectares of commercial development that could be serviced by the Victoria Street SPS. In order to assess the efficiency of the 1250 unit / 3 hectare limit of the CBSA, The Township of Woolwich retained Stantec to perform a study to compare actual flows from the developments in Breslau to the theoretical design flow generation rates to determine if additional units could be serviced by the existing system. Sanitary flow monitoring and water usage rates were reviewed and found that actual flows were lower than the design flows. Stantec described the results of the study in their report, Breslau Cross Border Sanitary Flow Allocation Review - Stantec, September 2012. Based on their findings, Stantec recommended that the Township consider the following in order to revise the 1250 unit / 3 ha limits of the CBSA: Consider a revised residential sanitary flow generation rate of 250 L/capita/day Correct known Inflow and Infiltration problems in the Breslau sanitary system Project No. 1463 Page 7
Continue to monitor sanitary flows in Breslau to verify longer term actual flows versus negotiated flows and revisit the values presented in this report once there is a need for additional capacity These recommendations were endorsed by the Township of Woolwich Council in March 2013. Stantec s calculations based on their recommendations found that 240 additional residential units could be serviced using their revised design criteria. As there are current development applications for Breslau far exceeding 240 units, the Township continued to negotiate with Kitchener to access additional capacity from the Victoria Street SPS to service future growth in Breslau. Amended Cross Border Servicing Agreement for Sewage Collection Based on the results of the Breslau Cross Border Sanitary Flow Allocation Review (Stantec, September 2012), the CBSA was amended in March 2013 and now allows the Township of Woolwich a maximum daily flow of 45 L/s and a peak flow of 96.7 L/s. The Town has continued negotiations with the City of Kitchener and is nearing an agreement to further amend the CBSA to increase their allocation from the Victoria Street SPS, increasing the allocation to a maximum peak flow of 189 L/s (50% of the VSPS capacity of 378 L/s) and average daily flow of 90 L/s. This increase will allow for a much greater proportion of the settlement plan to be serviced via the Victoria Street SPS. For the purposes of the sanitary servicing capacity analysis of the Settlement Plan, it is assumed that Breslau will have an allocation for sanitary flows from Kitchener at the VSPS as follows: 189 L/s peak sanitary flow 90 L/s average daily sanitary flow 3.3 Capital Upgrades Required to Achieve Full Capacity of Pumping Stations 3.3.1 Victoria Street Pumping Station The ultimate capacity of the VSPS has not been realized and capital upgrades to the pumping station are required. These upgrades were planned for in the design and construction of the station. The Township of Woolwich will need to participate with Kitchener in the following requirements: Woolwich will need to pay for an additional 25% of the initial capital cost of the VSPS, an amount of approximately $1,505,400 in 2015 dollars. The payment to Kitchener will be funded by the Township s DC reserve. Project No. 1463 Page 8
As per the Stantec 2012 servicing report, there are 3 pumps in the VPS, 2 duty and one standby. This pump configuration can achieve a max of 328 L/s peak pumping capacity. A 3 rd duty pump needs to be installed to achieve the full pumping station capacity of 378 L/s. This upgrade will be funded through the Township s collection of the sanitary portion of Kitchener s Development Charge (D/C) at the time of building permits for new residential and non-residential development. Kitchener anticipates that the storage facility will be integral to the ultimate capacity of the VSPS. Future storage improvement costs will be funded through the Township s collection of the sanitary portion of Kitchener s Development Charge (D/C) at the time of building permits for new residential and non-residential development. Woolwich will need to amend the CBSA with Kitchener in order to receive the increased allocation of capacity and resolve the upgrade costs. Kitchener has indicated that they are willing to proceed with these upgrades, and to provide the additional capacity to Breslau. 3.3.2 Breslau Pumping Station The Breslau pumping station (BPS) is located on the West Side of the Grand River adjacent to the VPS. Sanitary flow from Breslau drains to the wet well, where it is pumped to the inlet channel of the Victoria Street Pumping Station. Stantec 2012 reports that the Conestoga Rovers and Associates (CRA) Victoria Street North Sanitary Sewage Pumping Station Preliminary Design Report provides the capacities for the pumps in this station. The firm capacity of the station in the preliminary design report is 96 L/s. MMM Group Limited was retained by Empire Communities (Riverland) Limited to undertake an assessment of available sanitary servicing capacity for the Riverland Area 2 lands, and produced a report titled Riverland Area 2 Breslau Sanitary Capacity, dated August 13, 2013. As part of that assessment as-built drawings were reviewed and a site visit to the Breslau Wet Well was conducted. Their report provides a cursory review of the hydraulic capacity of the Breslau Wet Well. There are two critical constraints identified with respect to upgrading the Breslau Wet Well servicing capacity to achieve a pumping capacity equal to the available VPS capacity of 189 L/s. Pump discharge lines are not sized for an ultimate flow of 189 L/s. Upsizing of existing discharge lines or installation of additional discharge lines connecting the Breslau Wet Well to the VPS will be required. Existing pump capacity is limited. Larger pumps and/or additional pumps will be required. Electrical power requirements will need to be reviewed. Project No. 1463 Page 9
Extensive upgrades to the BSPS will be required to approximately double the pumping station capacity to capture the benefit of the increased pumping capacity available from Kitchener in the VSPS. A detailed study will be required to determine the optimal upgrades required to increase the Breslau Wet Well Pumping Station capacity to match or exceed 189 L/s. The approximate high level estimated costs to upgrade the BSPS peak flow pumping capacity from 96 L/s to 189 L/s fall within the following range. $150,000 - upgrade Pumps, with associated upgrades to power and piping equipment (assumes no upgrade to existing wet well required, existing volume sufficient, includes design costs) $600,000 - Install second Breslau Wet Well facility with new pumps, power and piping requirements (assumes new wet well structure required, includes design costs) 3.3.3 Summary of Pumping Station Capital Upgrades Required Breslau Wet Well: Larger Pumps and/or additional pumps Increased Wet Well Volume Piping modifications, including discharge lines connecting to Victoria Street Pumping Station Electrical power upgrades Victoria Street Pumping Station: Compensation to Kitchener for original capital costs for additional 25% of pumping station capacity Pump upgrades Storage capacity upgrades 3.4 Sanitary Piping Constraints Buildout of the Breslau sanitary collection system has been driven by the servicing requirements of the Riverland and Hopewell Heights subdivisions. The main trunk begins at the BSPS Wet Well within the VSPS site and extends across the Grand River at Victoria Street, following Victoria Street eastwards to Woolwich Street South, as shown on Figure 3.1. The sanitary system has been divided into sub-trunks for the purposes of this analysis Project No. 1463 Page 10
to identify any capacity constraints related to the servicing of the growth areas of the settlement plan. The sub-trunks, as shown on Figure 3.1 are as follows: Victoria Street Sub Trunk This is the main pipe crossing the Grand River that all other sub-trunks connect to. It also services a small area of commercial land along the south side of Victoria Street. This sub trunk conveys all Breslau sanitary flows to the BPS. Riverland Sub Trunk The Riverland sub trunk connects to the Victoria Street Sub Trunk east of the Grand River crossing. This sub trunk was constructed to service the Riverland residential subdivision, and was designed to ultimately service the existing residential area of Breslau south of Dolman Street and Maders Lane, currently on private sanitary services. The pipe network currently extends to Woolwich Street South and will be serviced as a future project by the Township, through local improvements primarily dependent on the timing of financing. It is unknown when municipal services will be extended, but allocation from the VPS in the existing CBSA is dedicated for these units. The south Breslau industrial lands are tributary to this sub-trunk. Extension of sanitary services to the Industrial Lands would be required from this sub trunk due to proximity and topography. Future industrial flows are tributary to the Riverland sub trunk. A 375 mm diameter sewer at 0.50% grade was installed through the second phase of the Riverland subdivision to Woolwich Street South. It does not appear that industrial flows were considered in the design of this pipe. The existing capacity of this pipe is a constraint to servicing the south industrial lands via the VSPS. Providing service for industrial flows would potentially require capital upgrades to increase the size of this pipe. A detailed downstream analysis will be required to determine the servicing potential to develop the industrial lands via the Riverland Sub trunk. Hopewell Heights Sub Trunk The Hopewell Heights sub trunk connects to the Victoria Street sub trunk at Woolwich Street South. This sub trunk currently services the existing Hopewell Heights subdivision. This sub trunk would service Neighbourhood 2 and the employment lands of the settlement plan due to proximity and topography. An Environmental Assessment for the service crossings of Hopewell Creek (Stantec 2013) found that the preferred servicing option for these lands was a crossing of the creek and connection to the existing sanitary sewer in the Hopewell Heights subdivision. A sanitary pumping station will be required to convey flows across Hopewell Creek from Neighbourhood 2 to the existing Hopewell Heights subdivision. Project No. 1463 Page 11
Servicing of these lands by this route was considered in the original design of the sub trunk. A 450 mm diameter sewer was constructed through the subdivision to the future crossing point. Woolwich Street North Sub Trunk This pipe is existing and was built to service existing residential and commercial properties along Woolwich Street North west of Fountain Street. Some of the residences and commercial sites have been connected to the sewer, but not all. This sewer would service infill development along Woolwich Street North. As this pipe is existing, all future infill development serviced by the Woolwich Street North sub trunk will be tributary to the VSPS (and BSPS). Allocation of VSPS capacity for development in Breslau should consider that future infill along this sub trunk will require allocation from the VSPS. It would not be connected to the future East Side servicing system. Infill development along this sub trunk is a constraint to VPS allocation. Woolwich Street South Sub Trunk The tendering process for the construction of this pipe is underway. It will be built to service existing residential and commercial properties along Woolwich Street South, north of Dolman Street and Dolman Street East of Joseph Street. This sewer would service future infill development along Dolman Street and Woolwich Street South, including a proposed low density residential land use north of Maders Lane. As this pipe is scheduled for construction in 2016, all future infill development serviced by the Woolwich Street south sub trunk will be tributary to the VSPS. Allocation of VSPS capacity for development in Breslau should consider that future infill along this sub trunk will require allocation from the VPS. It would not be connected to the future East Side servicing system. Infill development along this sub trunk is a constraint to VPS allocation. Ebycrest Road Sub Trunk The Ebycrest Road sub trunk is a future service to the only area north of Victoria Street in the Breslau Settlement Plan. It would connect in the future to the Victoria Street sub trunk at or near the intersection of Victoria Street and Ebycrest Road. This sub trunk would service existing residences, and proposed commercial and medium density residential land uses. This pipe is a proposed concept to service the Settlement Plan lands north of Victoria Street that will eventually be required for the development of these lands. This area will connect to the Victoria Street sub trunk due to proximity and topography. Flows will be directed to the VSPS. It would not be part of the future East Side servicing plan. Allocation from the VSPS should consider the future infill along this sub trunk will Project No. 1463 Page 12
be required from the VSPS. Infill development along this sub trunk is a constraint to VPS allocation. 3.5 Residential Flow Generation Rate The Township of Woolwich has endorsed the recommendations of the Breslau Cross Border Sanitary Flow Allocation Review (Stantec 2012) to consider using 250 L/capita/day as the residential sanitary flow generation rate. The Township s engineering design standards at that time required use of 350 L/capita/day. This recommendation was based on review of flow monitoring data collected by Stantec for the existing Breslau developments showing that actual sanitary flows were below 250 L/capita/day. The purpose of this change would be that additional units could be developed in Breslau using the existing capacity of the VPS. In May of 2015, the City of Kitchener revised their domestic sewage flow rate form 350 L/capita/day to 305 L/capita/day to better reflect current water and wastewater trends. The City also noted that the Region of Waterloo is undertaking a Wastewater Treatment Master Plan Update and another revision to the domestic sewage flow rate could be considered at that time. Stantec s 2012 report recommended that reducing the flow generation rate to 250 L/capita/day for existing Breslau should accompany ongoing monitoring to review the impacts of this recommendation. The flow monitoring program is ongoing. The Settlement planning process is a long term plan for Breslau, representing growth through 2031. The servicing analysis will use 305 L/capita/day as the flow generation rate, matching the current standards of the City of Kitchener. This will provide an increase to the servicing capacity over the current design criteria. The ongoing flow monitoring program may determine that this rate could be further reduced to the Stantec recommendation of 250 L/capita/day. If the results of monitoring show that actual flows remain below 250 L/capita/day over time, the allocation totals can be revisited. This may allow for further development allocation to infill and greenfield development at that time. The next step is to determine if a 305 L/capita/day generation rate can provide an adequate amount of servicing allocation to meet the growth goals of the Settlement Plan. Project No. 1463 Page 13
3.6 Settlement Plan Servicing Capacity Analysis The Settlement Plan was prepared by The Planning Partnership and presented at a public meeting as part of the overall Settlement Planning process in July 2015. The Settlement Plan identifies land uses proposed for Breslau including proposed greenfield and infill development. These land uses are the basis of the population estimates used for the sanitary servicing analysis. An iterative process was used to determine how the growth goals of the Settlement Plan can be serviced by the current sanitary allocation available to the Township of Woolwich. Approach 1: Service Full Buildout of Settlement Plan with Provincial Density Targets The initial approach is to assess the entire Settlement Plan based on the existing serviced lands, the proposed land use designations and the provincial density targets under the provincial Growth Plan. The initial population assumptions for the settlement plan are as follows: 1. Existing serviced areas unit counts of existing units, includes: a. Riverland Area 1 Subdivision (475 units) b. Hopewell Heights Area 1 Subdivision (475 units) c. Elroy Acres residential development (210 units) d. Village Main Street (90 units) 2. Non-residential facilities to be serviced: a. Breslau Public School (4.028 ha) b. Breslau Mennonite Church (2.637 ha) 3. Greenfield Developments a. Greenfield developments must achieve provincial growth target densities of 55 persons per hectare. This will apply to: i. Neighbourhood 1 ii. Neighbourhood 2 iii. Employment Land 1 and 2 4. Commercial and Industrial Land Uses a. Flows for commercial and industrial land use designations are estimated using Region sanitary design criteria from the Area Municipal Design Project No. 1463 Page 14
Guidelines and Supplemental Specifications for Municipal Services (DGSSMS). These land use designations from the Settlement Plan include: 5. Infill development i. South Breslau Industrial Lands ii. Commercial/Retail a. Medium Density, High Density, Mixed Use and Commercial Land uses are proposed in the area of the Victoria Street North and Woolwich Street South intersection. These land uses would be considered intensification as they fall within the built boundary of the Settlement Plan. The intensification of these areas is not assured and any intensification would occur incrementally over the long term, behind the rate of Greenfield growth anticipated in Breslau. There are no provincially required intensification targets for these land use designations. As there are no growth targets for infill areas, and the anticipated intensification rate is very slow, no population growth is provided for infill lands. Additional capacity within the system after the other areas are serviced can be allocated to infill development. Results: Full buildout of the Settlement Plan under the Approach 1 framework results in a peak flow of 287 L/s (refer to Appendix A), exceeding the Victoria Street SPS capacity of 189 L/s. Approach 2: Eliminate Servicing Allocation to Industrial and Infill Land Uses A large source of sanitary flows in Approach 1 are generated by infill development and the South Breslau Industrial Area. The existing industrial area uses private services. Using the methodology of the DGSSMS the future industrial peak flows are estimated at 68 L/s, or 35% of the ultimate capacity of the Victoria Street SPS, and 70% of the newly available capacity. Servicing this area would come at the expense of limiting greenfield and infill development of the Settlement Plan. 1. Infill and Industrial Land Use - no allocation Results: Removing servicing allocation to the South Breslau Industrial Lands and the infill land use designations in existing Breslau results in a peak flow of 194 L/s, exceeding the VSPS capacity of 189 L/s (refer to Appendix A). Under this scenario Greenfield Neighbourhoods 1 and 2 can achieve the density target of 55 persons and jobs per hectare. However, there is no remaining allocation capacity for infill, commercial or industrial development. Project No. 1463 Page 15
This approach demonstrates that there is no single challenge to servicing the targets of the growth plan. Allocation can be distributed throughout the Settlement Plan, with consideration that the total allocation must fall within the limits of the VSPS capacity. Approach 3: Determine a Maximum Residential Population to be Serviced Based on the above results, an approach is required that determines a serviceable population for the Settlement Plan based on the available capacity of the VSPS. The following methodology was used to determine a Settlement Plan Allocation Population: 1. The design peak flow from the existing Breslau settlement was calculated using the original CBSA allocation, including areas not currently connected to municipal services, and the updated sanitary design criteria of 305 L/c/d. The result is an existing design peak flow of 80.0 L/s from the Breslau Settlement area to the VSPS. The existing areas and populations are shown on the Servicing Alternative 3 design sheet in Appendix 3 for each sub-trunk. 2. The peak capacity of the VSPS (after required capital upgrades) available to Woolwich for the Breslau Settlement Plan is 189 L/s. This results in 109 L/s of available peak flow to be allocated to development for the Village of Breslau Settlement Plan. 3. An entry for the Settlement Plan Allocation Population has been added to the Servicing Alternative 3 design sheet to determine a residential population, that when added to the existing Breslau population, will produce a design peak flow of 189 L/s. 4. An inflow and infiltration (I&I) component for this development is factored into the flow calculation. Assuming the provincial density target of 55 p/ha will be achieved for new development, the area required is calculated from the allocation population. The I&I flow component is calculated from this area. 5. The result is a Settlement Plan allocation population of 9130 people. 109 L/s of peak flow capacity represents an allocation for residential population growth of 9130 people (refer to Appendix A). This number represents the maximum allocation expressed in the form of residential development, with no other institutional, commercial or industrial (ICI) allocation provided. 6. This population can be distributed throughout the settlement plan and represents the maximum available capacity of the VSPS for residential development in the Breslau Settlement Plan. Project No. 1463 Page 16
3.7 Conclusions - Sanitary Servicing Approach 3, providing the sanitary allocation capacity for the Breslau Settlement Area as a residential population is the preferred option due to the previous and pending CBSA methodology. The established population growth for the Settlement Plan is as follows: For residential growth within Breslau, all new development shall conform with the General Staging Objectives of Chapter 7.16.2.2 of this Plan. In addition, the following population growth is established for any new greenfield development within the Breslau Settlement Area: i. Between 2017 and 2019 825 new residents/300 new dwelling units; ii. Between 2020 and 2022 825 new residents/300 new dwelling units; iii. Between 2023 and 2025 825 new residents/300 new dwelling units; iv. Between 2026 and 2028 825 new residents/300 new dwelling units; v. Between 2029 and 2031 250 new residents/85 new dwelling units. The growth results in an increase in population of 3,550 people, in 1285 new dwelling units. The increased allocation available from Kitchener of the VSPS will allow for residential population growth within Breslau of 9,130 people, exceeding the growth totals. The proposed settlement plan can be serviced by the additional sanitary servicing capacity available from the City of Kitchener through the VSPS. Capital upgrades to the VSPS and BSPS will be required to achieve the required sanitary servicing capacity for the Settlement Plan. The existing Breslau sanitary sub-trunk servicing network will need to be reviewed by each development application in order to determine if there is enough capacity in the downstream system to service the proposed development, or if capital upgrades are required. Project No. 1463 Page 17
4.0 WATER SUPPLY AND DISTRIBUTION 4.1 Existing Water Distribution The Region of Waterloo has jurisdiction over the potable drinking water supply for homes and businesses throughout the Region. Water servicing in the Region is based on a twotier approach. The Region is responsible for water treatment, storage, pumping and the larger water distribution mains. The Township of Woolwich is responsible for the smaller distribution mains and for the service connections. The settlement of Breslau is supplied with municipal water through a distribution system which sources water west of the Grand River. The existing water infrastructure within the Secondary Plan area includes: a 300 mm diameter PVC watermain along Victoria Street (connects to the City of Kitchener water main at Shirley Drive a 300 mm diameter PVC watermain on Woolwich Street North a 300 mm diameter PVC watermain on Woolwich Street South (from Elroy Road to unopened Ottawa Street road allowance) a 400 mm diameter PVC watermain on Woolwich Street South (from unopened Ottawa Street road allowance to Region of Waterloo International Airport) a 450 mm diameter watermain along the unopened Ottawa Street road allowance a 300 mm diameter PVC watermain from the unopened Ottawa Street road allowance, through the Riverland subdivision local watermains within the Hopewell Heights and Riverland subdivisions The 300 mm diameter trunk watermain crosses Grand River at Victoria Street and traverses easterly through the Hopewell Heights Subdivision and terminates on Townsend Road west of Hopewell Creek. This watermain feed is an extension of the Kitchener Zone 4 pressure system. The Village of Breslau is also serviced from Kitchener by a second watermain feed from a crossing of the Grand River at the unopened Ottawa Street road allowance. The 450 mm diameter Ottawa Street trunk watermain extends across the Grand River to Woolwich Street South and currently provides the primary water feed for the Riverland Subdivision and for residences and businesses along Woolwich Street South and southerly to the Region of Waterloo International Airport. This trunk watermain is an extension of the Kitchener Zone 4 pressure zone area with an existing pressure reducing valve (PRV) on the west side of Grand River. This PRV is set to lower the top water level (TWL) to provide a maximum hydraulic grade line of 365 m. The Region of Waterloo s Tri-City Water Distribution Master Plan noted the following about water demands in the Kitchener Zone 4 area: Kit 4 Breslau North, The area is an extension of Kitchener Zone 4 and is currently serviced through a single main extending from Victoria Street. Once the village is fully developed, fire demand conditions will increase In the interim, moderate fire flow conditions in the order of 150-200 L/s should Project No. 1463 Page 18
be considered In order to deal with larger fire forces in the future, considerations should be given to the relocation of the existing Breslau S PRV to the eastside of the Grand River 4.2 Water System Optimization for the Breslau Secondary Plan Area The Region of Waterloo retained WSP Canada Inc. to complete a series of four Technical Memoranda (TM) regarding Water System Optimization for the Breslau Secondary Plan Area (SPA). The four TM s represent a process to arrive at a preferred water supply recommendation for the Breslau (SPA). The technical memoranda were prepared as follows: TM1: Review of Background Materials TM2: Domestic Water Quality and Fire Flow Demands Review minimum acceptable standards for fire protection for calculating fire flows to determine water main sizes versus the associated impacts on water quality in the delivery of potable water for domestic use. TM3: Water Supply Alternatives Develop a comprehensive set of alternatives and an evaluation framework to ensure the future works are as economical and efficient as possible. TM4: Preferred Water Supply Alternative Summary of model results and ranking of two scenarios and seven alternatives to provide a recommendation for the preferred water supply alternative. Technical Memos 1 and 2 established the existing conditions of the Breslau water distribution and set the design criteria for modelling an optimized water distribution system. Technical Memo 3 developed and refined a set of alternatives to be reviewed in consultation with the Township of Woolwich and the Region of Waterloo. First, two fundamental alternatives were considered to determine the feasibility of a single East Side pressure zone to deliver the required level of service during normal and emergency water demand conditions. Scenario A: Single East Side Lands pressure zone at HGL 365 m Scenario B: Breslau north pressure zone (HGL 380 m) separate from and East Side pressure zone (HGL 365 m) to the south Project No. 1463 Page 19
For each scenario seven alternatives were considered in the modelling: 1. Valve between Breslau South to North. Located in Woolwich Street South, this normally closed valve in a small chamber will provide an additional supply point during a fire, if the Breslau North HGL drops below Breslau South. 2. Fountain Street Supply Main and Valve from Breslau South to North. Similar to 1 above. 3. Distribution Looping in Central Breslau. The additional mains will improve supply redundancy, looping and decrease water age at existing dead-ends. 4. Third Supply Main and Valve to lands east of Hopewell Creek. 5. Distribution Looping in West Breslau. The additional main will improve supply redundancy, looping and decrease water age at an existing dead-end. 6. Dolman Street extension (from Woolwich to Fountain) to improve looping. 7. Combination of Alternatives 1, 2, 4 and 6 Technical Memo 4 summarized and ranked the results of the modelling for each scenario and alternative. The results tables and maps show that the single-zone Scenario A and Alternative 7 deliver the best service levels as well as supply reliability for the entire Breslau SPA, without adverse effects to existing areas in the broader Eastside pressure zone. Alternative 7 closes the largest number of large-scale loops and eliminates the most small-diameter dead-ends, improving water circulation and quality as well as fire flows throughout. A copy of the preferred water servicing Alternative 7 Scenario A maps are included in Appendix B. Refer to WSP Technical Memos 1 to 4 for a full description of the process, and maps of the various water servicing scenarios and alternatives (WSP, 2015). 4.3 Hopewell Creek Extension of Services Class Environmental Assessment The Township of Woolwich has undertaken a Class B Environmental Assessment (EA) Study for selecting the preferred corridors for the future extension of water and sewage services across Hopewell Creek to service lands on the east side of the creek within the Breslau Settlement Area. The preferred water servicing concept includes a double crossing of Hopewell Creek at one location and tying into the existing 300 mm diameter watermain at Townsend Drive and/or Maplecrest Drive. Project No. 1463 Page 20
5.0 UTILITY CONSIDERATIONS Waterloo North Hydro, Bell Canada, Rogers Cable and Union Gas have existing plant in the surrounding area. Confirmation of adequate capacity for the proposed development will be sought from each of the Utilities. The extent of system improvements, if any, will be determined upon completion of feasibility studies by each of the Utilities once detailed loading information is available. Utility servicing of the study area will be designed and constructed in accordance with the Region of Waterloo and Area Municipalities Design Guidelines and Supplemental Specifications for Municipal Services (January 2015) or the most current version. Project No. 1463 Page 21
DRAINAGE TO CHILLIGO CREEK DRAINAGE TO HOPEWELL CREEK GREENHOUSE RD. DRAINAGE TO HOPEWELL CREEK DRAINAGE TO THE GRAND RIVER SPITZIG RD. KRAMP RD. EBYCREST RD. VICTORIA ST. N. WOOLWICH ST. N. FOUNTAIN ST. N. DRAINAGE TO RANDALL DRAIN DRAINAGE TO HOPEWELL CREEK RANDALL DRAIN DRAINAGE TO CHILLIGO CREEK DRAINAGE TO RANDALL DRAIN HOPEWELL CREEK METROLINX RAIL LINE DRAINAGE TO HOPEWELL CREEK DRAINAGE TO BRESLAU DRAIN WOOLWICH ST. S. GRAND RIVER MENNO ST. BRESLAU DRAIN FOUNTAIN ST. N. LEGEND: SETTLEMENT PLAN BOUNDARY CENTRELINE OF WATERCOURSE EXISTING SWM FACILITY NATURAL HERITAGE SYSTEM EXISTING SUBCATCHMENT BOUNDARY TOWNSHIP OF WOOLWICH 30 CENTURIAN DRIVE, SUITE 100 MARKHAM, ONTARIO L3R 8B8 TEL: (905) 475-1900 FAX: (905) 475-8335 BRESLAU SETTLEMENT PLAN DESIGNED BY: CAD SCALE: 1:15000 DATE: CHECKED BY: S.E.K. NOVEMBER 2015 EXISTING STORM DRAINAGE PLAN PROJECT No: 1463 FIGURE No: 2.1
APPENDIX A SANITARY SERVICING ALTERNATIVES
Breslau Settlement Plan - Sanitary Servicing Servicing Alternative 1 55 persons per hectare density target for greenfield development Region sanitary design criterial applied to Commercial and Industrial Land Uses Residual Capacity to be allocated to Infill Development 1463 Contributor Area (ha) Secondary Plan Areas Population by Land Use Residential School Commercial Industrial Inflow and Infiltration Total Road Area Sanitary Area Density Area # Units PPU Population Cumulative Population Peaking Factor Peak Flow Unit persons/ha (ha) Harmon 305 305 1.5 0.6 1.5 0.6 (ha) 1.0 0.5 (ha) 0.15 Rate L/c/d L/c/d (ha) L/s/ha L/s/ha (ha) L/s/ha L/s/ha L/s/ha L/s/ha L/s/ha Average Daily Flow Area Peak Flow Average Daily Flow Area Peak Flow Average Daily Flow Area Peak Flow Average Daily Flow Area I&I Peak Flow Average Daily Flow Riverland External Sub-Trunk Village Residential - Elroy Acres 38.089 18.5 38.089 210 3.35 704 704 38.089 5.7 5.7 5.7 Low/Med Density Residential 22.203 55 22.203 - - 1221 1925 22.203 3.3 3.3 3.3 Med/High Density Residential 8.215 55 8.215 - - 452 2376 8.215 1.2 1.2 1.2 Commercial/Mixed Use 2.341 55 2.341 - - 129 2505 3.51 31.02 8.84 2.341 0.4 31.4 9.2 Institutional - Breslau Mennonite Church 2.637 2.637 3.96 1.58 2.637 0.4 4.4 2.0 South Breslau Industrial Land 65.642 65.642 65.6 32.8 65.642 9.8 75.5 42.7 South Breslau Industrial Land (Restricted) 2.490 2.490 2.5 1.2 2.490 0.4 2.9 1.6 124.35 65.73 Riverland Sub-Trunk Low/Med Density Residential 36.000 44.2 36.000 475 3.35 1591 1591 3.66 20.56 5.62 36.000 5.4 26.0 11.0 Institutional - Breslau Public School 4.028 4.028 6.04 2.42 4.028 0.6 6.6 3.0 32.61 14.04 Hopewell Heights External Sub-Trunk Low/Med Density Residential 36.404 55 36.404 - - 2002 2002 36.404 5.5 5.5 5.5 Med/High Density Residential 14.456 55 14.456 - - 795 2797 14.456 2.2 2.2 2.2 Commercial/Mixed Use 4.611 55 4.611 - - 254 3051 4.611 0.7 0.7 0.7 Employment Lands I 25.636 55 25.636 - - 1410 4461 25.636 3.8 3.8 3.8 Employment Lands II 25.831 55 25.831 - - 1421 5882 3.18 66.00 20.76 25.831 3.9 69.9 24.6 GO Station 10.023 10.023 15.0 6.0 10.023 1.5 16.5 7.5 98.58 44.32 Hopewell Heights Sub-Trunk Low/Med Density Residential 40.000 39.8 40.000 475 3.35 1591 1591 3.66 20.56 5.62 40.000 6.0 26.6 11.6 Commercial/Business Park 2.760 2.760 4.1 1.7 2.760 0.4 4.6 2.1 31.12 13.69 Ebycrest Road Sub-trunk Village Residential 2.991 14.6 2.991 13 3.35 44 44 2.991 0.4 0.4 0.4 Med/High Density Residential 9.551 0 9.551 - - 0 44 0.000 0.0 0.0 0.0 Commercial/Retail 8.874 8.874 13.3 5.3 8.874 1.3 14.6 6.7 15.09 7.10 Woolwich St. North Sub-trunk Village Residential 1.886 21.3 1.886 12 3.35 40 40 1.886 0.3 0.3 0.3 Commercial/Mixed Use 5.634 0 5.634 - - 0 40 4.33 0.61 0.14 0.000 0.0 0.6 0.1 0.90 0.42 Woolwich St. South Sub-trunk Village Residential 14.632 14.9 14.632 65 3.35 218 218 14.632 2.2 2.2 2.2 Low/Med Density Residential 8.122 0 8.122 - - 0 218 0.000 0.0 0.0 0.0 Commercial/Mixed Use 1.949 0 1.949 - - 0 218 4.13 3.18 0.77 0.000 0.0 3.2 0.8 3.18 0.77 Victoria St. Sub-Trunk Commercial/Mixed Use 3.982 0 3.982 - - 0 0 4.50 0.00 0.00 0.000 0.0 0.0 0.0 0.00 0.00 Totals Natural Heritage System - Environmental Protection 151.01-151.010 Parks + Open Space 12.84-12.840 ROWs + Miscellaneous Inefficiencies 69.192 - - Total Land Area 562.835 Totals 302.53 11871 2.88 120.70 41.91 6.66 10.00 4.00 21.66 32.49 12.99 68.13 68.13 34.07 369.75 55.46 286.78 148.43 SCS Consulting Group Ltd 09/12/2015 P:\1463 Breslau Secondary Plan\Design\Pipe Design\Sanitary\2015 12(Dec) 07- Settlement Plan Sanitary Servicing Alternatives.xlsx Servicing Alternative 1