Schedule ‘C’ Environmental Assessment for 16th Avenue between Woodbine Avenue and York/Durham Line Appendix Q Contamination Overview Study Accessible formats are available upon request. October 5, 2017 CONTAMINATION OVERVIEW STUDY 16th Avenue from Woodbine Avenue to York/Durham Line, Markham, Ontario Submitted to: HDR Inc. 255 Adelaide Street West Toronto, Ontario M5H 1X9 Region of York P-14-103 Report Number: 1538314 Distribution: 1 electronic copy - HDR Inc. REPORT 1 copy - Golder Associates Ltd. CONTAMINATION OVERVIEW STUDY, 16TH AVENUE, MARKHAM, ONTARIO Table of Contents 1.0 INTRODUCTION .................................................................................................................................................... 1 2.0 METHOD OF INVESTIGATION ............................................................................................................................. 1 3.0 SCOPE OF WORK ................................................................................................................................................ 1 3.1 Information Review ................................................................................................................................... 1 3.2 TSSA Fuel and Safety Division Records .................................................................................................. 1 3.3 Environmental Database Review .............................................................................................................. 2 3.3.1 Aerial Photographs.............................................................................................................................. 4 3.3.2 Regional Geology ............................................................................................................................... 5 3.4 Field Investigation ..................................................................................................................................... 5 3.4.1 Existing Land Use ............................................................................................................................... 5 3.5 Summary of Findings ................................................................................................................................ 6 4.0 SUMMARY AND DISCUSSION ............................................................................................................................. 6 5.0 LIMITATIONS AND USE OF REPORT ............................................................................................................... 12 6.0 CLOSURE ............................................................................................................................................................ 12 TABLES Table 3.1: Database Review Summary 2 Table 3.2: Aerial Photograph Summary 5 Table 4.1: Property Identification Summary 8 October 5, 2017 Report No. 1538314 i CONTAMINATION OVERVIEW STUDY, 16TH AVENUE, MARKHAM, ONTARIO FIGURES Figure 1: Study Area Location Plan Figure 2A (Appendix C): Historical Air Photo 1954 Figure 2B (Appendix C): Historical Air Photo 1970 Figure 2C (Appendix C): Historical Air Photo 1988 Figure 2D (Appendix C): Historical Air Photo 1999 Figure 2E (Appendix C): Historical Air Photo 2005 Figure 2F (Appendix C): Historical Air Photo 2014 APPENDICES APPENDIX A Regulatory Responses APPENDIX B EcoLog ERIS Report APPENDIX C Aerial Photographs October 5, 2017 Report No. 1538314 ii CONTAMINATION OVERVIEW STUDY, 16TH AVENUE, MARKHAM, ONTARIO 1.0 INTRODUCTION Golder Associates Ltd. (“Golder”) was retained by HDR Inc. (“HDR”), on behalf of the Regional Municipality of York (York Region), to provide contaminated property and waste management consulting services in support of the 16th Avenue Municipal Class Environmental Assessment (Woodbine Avenue to York/Durham Line), in Markham, Ontario. The “Study Area” includes approximately 14.3 km of 16th Avenue, Woodbine Avenue to York/Durham Line. The Study Area and limits are presented on Figure 1 following the text of this report. Golder’s level of work consisted of a Contamination Overview Study (“COS”) for the Study Area to assess the potential and/or actual environmental impact to the 16th Avenue right-of-way (“ROW”) within the Study Area which are identifiable from a visual examination of surface features through a “windshield” level reconnaissance and from available sources of information. No soil, water, liquid, gas, product or chemical sampling and testing on, or in the vicinity of the Study Area was conducted as part of this assessment. This assessment included a cursory overview of the Study Area and does not constitute a complete assessment of these lands. 2.0 METHOD OF INVESTIGATION Information reviewed and agencies contacted as part of the COS consisted of: Technical Standards Safety Authority (“TSSA”) Fuel and Safety Division Records (select addresses of interest); EcoLog ERIS Report; Aerial photographs; and, Topographic and geologic mapping. A limited “windshield reconnaissance” within the Study Area was completed on May 19, 2017 to visually corroborate the background information reviewed. 3.0 SCOPE OF WORK 3.1 Information Review The assessment included a review of available and applicable references concerning the Study Area history and subsurface conditions, as well as a field reconnaissance. Details of the information reviewed are provided in the following sections of this report. 3.2 TSSA Fuel and Safety Division Records The TSSA maintains records related to registered underground storage tanks for petroleum-related products. The TSSA was contacted to establish the status of the properties within the Study Area and to identify outstanding instructions, incident reports, fuel oil spills, or contamination records. Based on our review of the Study Area and properties with a high probability of having associated TSSA records, the following properties were searched (from west to east): 3010 Woodbine Avenue, Markham October 5, 2017 Report No. 1538314 1 CONTAMINATION OVERVIEW STUDY, 16TH AVENUE, MARKHAM, ONTARIO 38 Buttonfield Road, Markham 3315 16th Avenue, Markham 9270 16th Avenue, Markham 1 Stone Mason Drive, Markham 9271 Markham Road, Markham 1 Mint Leaf Gate, Markham 9249 Ninth Line, Markham The TSSA issued a response on September 18, 2017 indicating that they had a record of an active propane cylinder exchange at 9249 Ninth Line, Markham. A copy of the TSSA’s response is provided in Appendix A. 3.3 Environmental Database Review Golder retained EcoLog Environmental Risk Information Services Ltd. (“EcoLog ERIS”) to provide a summary of databases of environmentally pertinent sites within the vicinity of the Study Area. The EcoLog ERIS report contains the results of a review of the following databases: Anderson’s Waste Disposal Sites, Commercial Fuel Oil Tanks, Fuel Storage Tanks, Ontario Regulation 347 Waste Generators Summary, Retail Fuel Storage Tanks, Ontario Spills, Waste Disposal Site – MOE CA Inventory and Historical Inventory. Golder received a written report from EcoLog ERIS on May 11, 2017. Table 3.1 summarizes the records that present issues of potential environmental concern to the Study Area. Pertinent results of Golder’s review of the ERIS report (presented west to east) are provided below. A copy of the ERIS report is included in Appendix B. Table 3.1: Database Review Summary Address/ Property Database/ERIS Owner/ Contaminants Year Issue or Spill I.D. Map Key ID Tenant of Concern The presence of four Buttonville Fuel Storage fibreglass double Esso R&R Installed PHC F1 to F4, Tanks/ wall gasoline USTs Resources in 1992 BTEX ERIS ID 46 with capacities of Ltd. 3010 16th Avenue, 46,400 L Markham, Ontario/ Ontario The generation of oil Property 1 Regulation 347 skimmings and Waste 2010 to PHC F1 to F4, Imperial Oil sludges, light fuels, Generators 2011 BTEX and waste oils and Summary/ lubricants ERIS ID 46 Ontario Regulation 347 3315 16th Avenue, Generator of oil Waste Hydro One 2005 to PHC F1 to F4, Markham, Ontario/ skimmings and Generators Networks Inc. 2006 BTEX Property 4 sludges Summary/ ERIS ID 72 October 5, 2017 Report No. 1538314 2 CONTAMINATION OVERVIEW STUDY, 16TH AVENUE, MARKHAM, ONTARIO Address/ Property Database/ERIS Owner/ Contaminants Year Issue or Spill I.D. Map Key ID Tenant of Concern Ontario Regulation 347 Waste Hydro One 2010 to Generator of PCBs PCBs Generators Networks Inc. 2012 Summary/ ERIS ID 72 Ontario The generation of Regulation 347 York Downs aliphatic solvents, 4134 16th Avenue, Waste 2009 to PHC F1 to F4, Golf and petroleum distillates, Markham/Property 5 Generators 2011 BTEX, VOCs Country Club light fuels, and waste Summary/ oils and lubricants ERIS ID 56 4898 16th Avenue, Commercial Unionville Two single wall fuel Date PHC F1 to F4, Markham, Ontario/ Fuel Oil tanks/ Alliance oil USTs with a unknown BTEX Property 8 ERIS ID 69 Church capacity of 2, 250 L Ontario Regulation 347 Waste The generation of oil 2007 to PHC F1 to F4, Generators Shell Canada skimmings and 2016 BTEX Summary/ sludges ERIS ID 52 and 53 9270 McCowan The presence of two Road, Markham, fibreglass double Ontario/ Property 9 walled USTs containing gasoline Fuel Storage with capacities of 1536904 Installed PHC F1 to F4, Tanks/ 35,000 L, one Ontario Inc. in 1999 BTEX ERIS ID 52 fibreglass double walled UST containing diesel with a capacity of 25,000 L The presence of Fuel Storage 1571862 three fibreglass 380 Main Street Tanks and Ontario Ltd. Installed double walled USTs PHC F1 to F4, North, Markham, Retail Fuel o/a