ddra of 101, 103, and 105 brisbane road, toronto, ontario · 6605 hurontario street, suite 500,...

6605 Hurontario Street, Suite 500, Mississauga, Ontario ▪ L5T 0A3 Tel: 905-364-7800 ▪ Fax: 905-364-7816 ▪ www.intrinsik.com

SCREENING-LEVEL RISK ASSESSMENT

OF 45 PARK STREET, BOBCAYGEON, ONTARIO

Final Report

December 12, 2019 Prepared For: Cambium Inc. P.O. Box 325 52 Hunter Street East Peterborough, Ontario K9H 1G5

SLRA of 45 Park Street, Bobcaygeon, ON December 2019 Intrinsik Corp. – Project # 400989

DISCLAIMER Intrinsik Corp. (hereafter referred to as Intrinsik) provided this report for Cambium Inc. (Cambium) and Landscape Planning Ltd. (Landscape Planning). Intrinsik does not accept any responsibility for the use of this report for any purpose other than as specifically intended by Cambium and Landscape Planning. Intrinsik does not have, and does not accept, any responsibility or duty of care whether based in negligence or otherwise, in relation to the use of this report in whole or in part by any third party. Any alternate use, including that by a third party, or any reliance on or decision made based on this report, are the sole responsibility of the alternative user or third party. Intrinsik does not accept responsibility for damages, if any, suffered by any third party as a result of decisions made or actions based on this report. Intrinsik makes no representation, warranty, or condition with respect to this report or the information contained herein other than that it has exercised reasonable skill, care, and diligence in accordance with accepted practice and usual standards of thoroughness and competence for the profession of toxicology and environmental assessment to assess and evaluate information acquired during the preparation of this report. Any information or facts provided by others, and referred to or utilized in the preparation of this report, is believed to be accurate without any independent verification or confirmation by Intrinsik. This report is based upon and limited by circumstances and conditions stated herein, and upon information available at the time of the preparation of the report. Intrinsik has reserved all rights in this report, unless specifically agreed to otherwise in writing with Cambium and Landscape Planning.


SCREENING-LEVEL RISK ASSESSMENT OF 45 PARK STREET,

BOBCAYGEON, ONTARIO

Table of Contents Page

1.0 INTRODUCTION ............................................................................................................ 5 2.0 SITE DESCRIPTION AND HISTORY ............................................................................. 6 3.0 IDENTIFICATION OF CONTAMINANTS OF CONCERN ............................................... 7

3.1 Contaminants of Concern in Soil ................................................................................. 7 3.2 Contaminants of Concern in Groundwater .................................................................. 9

4.0 HUMAN HEALTH RISK ASSESSMENT ...................................................................... 11 4.1 COCs in Soil ............................................................................................................. 11 4.2 COCs in Groundwater ............................................................................................... 14

5.0 ECOLOGICAL RISK ASSESSMENT ........................................................................... 16 5.1 Contaminants of Concern in Soil ............................................................................... 16 5.2 Contaminants of Concern in Groundwater ................................................................ 18

6.0 OVERALL CONCLUSIONS AND RECOMMENDATIONS ........................................... 19 7.0 DOCUMENT SIGN-OFF ............................................................................................... 21 8.0 REFERENCES ............................................................................................................. 22


List of Tables Page

Table 3-1 Screening of Maximum Concentrations of COCs in Soil Against the Table

7 and 9 Site Condition Standards .............................................................. 7 Table 3-2 Screening of Maximum Concentrations of COCs in Groundwater Against

the Table 7 and 9 Site Condition Standards .............................................. 9 Table 4-1 Benzo(a)pyrene Total Potency Equivalent for Carcinogenic PAHs in Soil 11 Table 4-2 Comparison of Maximum Concentrations of COCs in Soil to Component

Values Protective of Human Health (µg/g) ...............................................12 Table 4-3 Comparison of Maximum Concentrations of COCs in Groundwater to

Human Health Component Values (µg/L) .................................................14 Table 5-1 Comparison of Maximum Concentrations of COCs in Soil to Component

Values Protective of Ecological Receptors (µg/g) .....................................16 Table 5-2 Comparison of Maximum Concentrations of COCs in Groundwater to

Component Values Protective of Aquatic Life (µg/L) ................................18

Attachments

Attachment A Site Characterization Figures


SCREENING-LEVEL RISK ASSESSMENT OF 45 PARK STREET,

BOBCAYGEON, ONTARIO 1.0 INTRODUCTION Intrinsik Corp. (Intrinsik) has been retained by Cambium Inc. (Cambium) on behalf of Landscape Planning Ltd. (Landscape Planning) to assess potential risks to human health and ecological receptors associated with contaminants identified in on-site soil and groundwater at 45 Park Street, Bobcaygeon, Ontario (hereafter referred to as the ‘Site’). The Site is currently occupied by Bobcaygeon Beach Park. A series of investigations were conducted by Cambium in 2019 to support the park redevelopment proposed by the City of Kawartha Lakes. These investigations identified concentrations of polycyclic aromatic hydrocarbons (PAHs) in groundwater, and petroleum hydrocarbons (PHCs), PAHs, benzene, toluene, xylenes, and metals/inorganics in soil, that were in excess of the applicable Ministry of the Environment, Conservation, and Parks (MECP) (formerly the Ministry of the Environment and Climate Change (MOECC)) Site Condition Standards. To evaluate potential risks to human health and ecological receptors, a screening-level risk assessment (SLRA) was conducted which involved a comparison of concentrations of chemicals in soil and groundwater to the Site Condition Standards and the associated component values derived to be protective of human health and the environment. The results of these comparisons were used to determine if risk management measures may be required to mitigate potential unacceptable risks. This assessment was conducted using scientific approaches that are generally consistent with Ontario Regulation 153/04 (O. Reg. 153/04), as amended, and in accordance with accepted practices and usual standards of thoroughness and competence for the profession of toxicology and environmental risk assessment. The assessment was prepared for internal due diligence purposes and was not prepared for submission to the MECP to support the filing of a Record of Site Condition (RSC) under O. Reg. 153/04. The conclusions and recommendations provided within this report are based exclusively on the limited site characterization information provided within the Geotechnical Investigation (Cambium, 2019a) and the Phase Two environmental Site Assessment (ESA) (Cambium, 2019b).


2.0 SITE DESCRIPTION AND HISTORY The Site is an irregularly shaped parcel of land measuring approximately 2.93 hectares (7.24 acres) in area. It is located at 45 Park Street in Bobcaygeon, Ontario and is currently developed for recreational use. The Site is generally flat and consists of areas covered by asphalt, grass, and vegetation. It also includes a picnic shelter, washrooms, and a canteen. It is bordered to the north by the Bobcaygeon River, to the south by Park Street followed by residential land use, and to the east and west by residential land use (Cambium, 2019b). A Phase One ESA was conducted by D.M. Willis in 2018 and a Geotechnical Investigation was conducted by Cambium in 2019. These investigations identified a number of on and off-site potentially contaminating activities (PCAs) which may have resulted in sub-surface impacts at the Site. These PCAs include a former on-site rail roundhouse maintenance yard, former on-site rail lines and rail yard activities, fill of unknown quality, and fertilizer manufacturing, processing, and bulk storage at the former Kawartha Feed Mill located north of the Site (Cambium, 2019b). The results of the Geotechnical Investigation identified concentrations of benzene, xylenes, PHC F2, antimony, arsenic, and molybdenum in on-site soils at concentrations that exceeded the Table 9 Site Condition Standards (Cambium, 2019b). Based on the findings of the Geotechnical Investigation (Cambium, 2019a), Cambium conducted a Phase Two ESA in October 2019. Eleven (11) boreholes (BH301 to BH311) were advanced to a maximum depth of 2.3 metres below ground surface (mbgs). Eleven (11) soil samples were analyzed for one or more of PHCs, PAHs, metals, inorganics, and benzene, toluene, ethylbenzene, xylenes (BTEX). Boreholes BH304 and BH307 were completed as groundwater monitoring wells. Samples were collected from each of these wells and submitted for analysis of PHCs, PAHs, BTEX, and metals/inorganics (Cambium, 2019b). The stratigraphy of the Site generally consisted of asphalt or topsoil underlain by sandy gravel with some silt. Woody debris and sawdust were encountered in BH303 and BH304. Cambium did not observe any olfactory evidence of PHC contamination in any of the soil samples, or the presence of free phase product in either groundwater sample. Each borehole extended to bedrock which was encountered at depths ranging from 1.1 to 2.8 mbgs (Cambium, 2019a). The depth to groundwater ranged from 0.3 to 2.3 mbgs during the Geotechnical Investigation (Cambium, 2019a) and from 0.42 to 0.51 mbgs during the Phase Two ESA (Cambium, 2019b). The inferred direction of groundwater flow is northerly towards the Bobcaygeon River (Cambium, 2019b). Cambium identified exceedances of the Table 9 Site Condition Standards for multiple PAHs, benzene, toluene, xylenes, PHC F2, PHC F3, PHC F4, arsenic, and molybdenum in on-site soils. Concentrations of multiple PAHs exceeded the Table 9 Standards in the groundwater samples collected from both BH304 and BH307. Each well was resampled in November 2019 to ensure that the elevated concentrations of PAHs in groundwater were not related to sedimentation within the samples. Concentrations were significantly lower in the subsequent samples, however, several PAHs continued to exceed the Table 9 Standards. Based on the results of the Phase Two ESA, Cambium recommended the completion of an additional investigation to delineate the identified exceedances, and/or the completion of an SLRA to determine if concentrations of the identified contaminants represent a potential risk to human health (Cambium, 2019b).


3.0 IDENTIFICATION OF CONTAMINANTS OF CONCERN The Site is proposed for continued recreational (parkland) use. It is not located within an area of natural significance and does not include land that is within 30 m of an area of natural significance or part of such an area (Cambium, 2019b). Soil pH for surface and subsurface soils were within the MECP acceptable ranges of 5 to 9 and 5 to 11, respectively. As a result, Cambium (2019b) indicated that the Site is not environmentally sensitive as per Section 41 of O.Reg.153/04. The Site and the surrounding area are serviced by municipal water supply, which is sourced from surface water resources, therefore, groundwater is not used for potable purposes. The average overburden thickness was less than 2 m, therefore, the Site is classified as a shallow soil property. The Site is situated within 30 m of the nearest water body. Therefore, the selection of contaminants of concern (COCs) in on-site soil was based on a comparison of the maximum concentrations or highest detection limits to the Table 7 Site Condition Standards (SCS) for residential/institutional/parkland use to be protective of the shallow soil condition, as well as to the Table 9 SCS for all property uses to be protective of the presence of a body of surface water within 30 m of the Site. Soils were conservatively assumed to be coarse grained. 3.1 Contaminants of Concern in Soil The selection of COCs in soil was based on a comparison of the maximum concentrations of chemicals in soil samples collected by Cambium as part of the Geotechnical Investigation (Cambium, 2019a) and the Phase Two ESA (Cambium, 2019b) to the Table 7 and 9 SCS (Table 3-1). For those chemicals that were not found above the laboratory detection limit in any sample, the highest detection limit was selected to represent the maximum concentration. For those chemicals where the highest detection limit exceeded the highest measured concentration, the highest detection limit was used to represent the maximum concentration. Table 3-1 Screening of Maximum Concentrations of COCs in Soil Against the Table

7 and 9 Site Condition Standards

Chemical Location of Maximum

Concentration Sample Depth

(mbgs) Maximum Soil Concentration

(µg/g) Table 7 SCS

(µg/g) Table 9 SCS

(µg/g)

Acenaphthene Multiple locations Multiple depths <0.05 7.9 0.072 Acenaphthylene BH305 0-0.6 0.32 0.15 0.093 Anthracene BH305 0-0.6 0.16 0.67 0.22 Antimony BH112 0.8-1.2 3.4 7.5 1.3 Arsenic BH112 0.8-1.2 22.7 18 18 Barium BH310 0.6-1.2 140 390 220 Benzene BH305 0-0.6 0.05 0.21 0.02 Benz[a]anthracene BH305 0-0.6 1.16 0.5 0.36 Benzo[a]pyrene BH305 0-0.6 1.75 0.3 0.3 Benzo[b]fluoranthene BH305 0-0.6 2.84 0.78 0.47 Benzo[g,h,i]perylene BH305 0-0.6 1.27 6.6 0.68 Benzo[k]fluoranthene BH305 0-0.6 0.94 0.78 0.48 Beryllium BH112 0.8-1.2 0.9 4 2.5 Boron (hot water soluble) Multiple locations Multiple depths <0.5 1.5 1.5 Boron (total) BH112 0.8-1.2 16 120 36 Cadmium BH112 0.8-1.2 0.9 1.2 1.2 Chromium (total) BH107 0.8-1.7 50 160 70 Chromium VI BH301 0-0.6 0.5 8 0.66 Chrysene BH305 0-0.6 1.67 7 2.8


Table 3-1 Screening of Maximum Concentrations of COCs in Soil Against the Table 7 and 9 Site Condition Standards

Chemical Location of Maximum

Concentration Sample Depth

(mbgs) Maximum Soil Concentration

(µg/g) Table 7 SCS

(µg/g) Table 9 SCS

(µg/g)

Cobalt BH107 0.8-1.7 15 22 22 Copper BH112 0.8-1.2 42 140 92 Cyanide (CN-) Multiple locations Multiple depths <0.05 0.051 0.051 Dibenz[a,h]anthracene BH305 0-0.6 0.28 0.1 0.1 Electrical conductivity BH311 0.6-1.2 0.4 0.7 0.7 Ethylbenzene Multiple locations Multiple depths <0.05 2 0.05 Fluoranthene BH305 0-0.6 3.49 0.69 0.69 Fluorene BH305 0-0.6 0.09 62 0.19 Indeno[1,2,3-cd]pyrene BH305 0-0.6 1.2 0.38 0.23 Lead BH112 0.8-1.2 97 120 120 Mercury BH112 0.8-1.2 0.07 0.27 0.27 Methylnaphthalene (total) BH305 0-0.6 1.42 0.99 0.59 Molybdenum BH112 0.8-1.2 5 6.9 2 Naphthalene BH305 0-0.6 0.65 0.6 0.09 Nickel BH107 0.8-1.7 23 100 82 PHC F1 Multiple locations Multiple depths <10 55 25 PHC F2 BH308 0.6-0.9 104 98 10 PHC F3 BH308 0.6-0.9 1,020 300 240 PHC F4 BH308 0.6-0.9 662 2,800 120 Phenanthrene BH305 0-0.6 1.82 6.2 0.69 Pyrene BH305 0-0.6 2.75 78 1 Selenium BH112 0.8-1.2 1.1 2.4 1.5 Silver Multiple locations Multiple depths <0.2 20 0.5 Sodium adsorption ratio BH311 0.6-1.2 3.2 5 5 Thallium BH112 0.8-1.2 0.4 1 1 Toluene BH305 0-0.6 0.27 2.3 0.2 Uranium BH310 0.6-1.2 0.73 23 2.5 Vanadium BH107 0.8-1.7 59 86 86 Xylene mixture BH305 0-0.6 0.67 3.1 0.05 Zinc BH107 0.8-1.7 55 340 290 BOLDED values in greyscale indicate that maximum measured concentration was greater than the Table 7 and/or 9 Site Condition Standard. < Indicates that the concentration is lower than the value presented but cannot be more accurately quantified

due to analytical uncertainty. As presented in Table 3-1, the maximum concentrations of thirteen (13) chemicals exceeded the Table 7 Standards, and the maximum concentrations of twenty-two (22) chemicals exceeded the Table 9 Standards. All of the chemicals that exceeded the Table 9 Standards also exceeded the Table 7 Standards. Therefore, twenty-two (22) chemicals were retained as COCs for further evaluation in the RA.


3.2 Contaminants of Concern in Groundwater The selection of COCs in groundwater was based on a comparison of the maximum concentrations of chemicals measured in groundwater samples collected by Cambium as part of the Phase Two ESA (Cambium, 2019b) to the Table 7 and 9 SCS (Table 3-2). Only the results of the supplemental sampling conducted in November 2019 were considered for PAHs given that there was uncertainty regarding the influence of sedimentation in the samples collected in October on the results for these chemicals. For those chemicals that were not found above the laboratory detection limit in any sample, the highest detection limit was selected to represent the maximum concentration. For those chemicals where the highest detection limit exceeded the highest measured concentration, the highest detection limit was used to represent the maximum concentration. Table 3-2 Screening of Maximum Concentrations of COCs in Groundwater Against

the Table 7 and 9 Site Condition Standards

Parameter Location of Maximum Concentration

Maximum Concentration

(µg/L) Table 7 SCS

(µg/L) Table 9 SCS

(µg/L)

Acenaphthene BH304 3.4 17 600 Acenaphthylene BH307 0.3 1 1.4 Anthracene BH304 1.7 1 1 Antimony BH307 1.15 16,000 16,000 Arsenic BH307 0.9 1,500 1,500 Barium BH304 124 23,000 23,000 Benzene BH304 and BH307 <0.5 0.5 44 Benz[a]anthracene BH304 1.6 1.8 1.8 Benzo[a]pyrene BH307 1.8 0.81 0.81 Benzo[b]fluoranthene BH307 2.5 0.75 0.75 Benzo[g,h,i]perylene BH307 1.1 0.2 0.2 Benzo[k]fluoranthene BH307 0.88 0.4 0.4 Beryllium BH304 and BH307 <0.007 53 53 Boron (total) BH304 and BH307 22 36,000 36,000 Cadmium BH307 0.012 2.1 2.1 Chloride BH307 140,000 1,800,000 1,800,000 Chromium (total) BH307 0.31 640 640 Chromium VI BH304 and BH307 <0.2 110 110 Chrysene BH304 and BH307 1.6 0.7 0.7 Cobalt BH304 0.313 52 52 Copper BH304 1.5 69 69 Cyanide (CN-) BH304 and BH307 <2 52 52 Dibenz[a,h]anthracene BH307 0.26 0.4 0.4 Ethylbenzene BH304 and BH307 <0.5 54 1800 Fluoranthene BH304 4.1 44 73 Fluorene BH304 3.1 290 290 Indeno(1,2,3-cd)pyrene BH307 1.1 0.2 0.2 Lead BH304 0.11 20 20 Methylnaphthalene (total) BH304 7.9 1,500 1,500 Molybdenum BH307 9.89 7,300 7,300 Naphthalene BH304 26 7 1,400 Nickel BH304 and BH307 0.6 390 390 PHC F1 BH304 and BH307 <25 420 420 PHC F2 BH304 and BH307 <100 150 150 PHC F3 BH304 409 500 500 PHC F4 BH304 and BH307 <200 500 500 Phenanthrene BH304 6.4 380 380 Pyrene BH304 3.5 5.7 5.7


Table 3-2 Screening of Maximum Concentrations of COCs in Groundwater Against the Table 7 and 9 Site Condition Standards

Parameter Location of Maximum Concentration

Maximum Concentration

(µg/L) Table 7 SCS

(µg/L) Table 9 SCS

(µg/L)

Selenium BH307 2 50 50 Silver BH304 and BH307 <0.002 1.2 1.2 Sodium BH307 126,000 1,800,000 1,800,000 Thallium BH304 0.01 400 400 Toluene BH307 0.6 320 14,000 Uranium BH304 0.655 330 330 Vanadium BH304 1.04 200 200 Xylene BH304 and BH307 <0.5 72 3,300 Zinc BH307 4 890 890 BOLDED values in greyscale indicate that maximum measured concentration was greater than the Table 7 and/or 9 Site Condition Standards. < Indicates that the concentration is lower than the value presented but cannot be more accurately quantified due to analytical uncertainty.

As presented in Table 3-2, the maximum concentrations of eight (8) chemicals exceeded the Table 7 Standards, and the maximum concentrations of seven (7) chemicals exceeded the Table 9 Standards. All of the chemicals that exceeded the Table 7 Standards also exceeded the Table 9 Standards. Therefore, eight (8) chemicals were retained as COCs for further evaluation in the RA.


4.0 HUMAN HEALTH RISK ASSESSMENT The initial selection of COCs in soil and groundwater included a comparison of the maximum measured concentrations or highest detection limits to the Table 7 and 9 Standards. Based on this comparison, twenty-two (22) chemicals in soil and eight (8) chemicals in groundwater were retained as COCs for further evaluation in the RA. Site Condition Standards are developed by considering numerous receptors (e.g., human and ecological), exposure pathways (e.g., contact with soil, inhalation of vapours, leaching of chemicals into groundwater), exposure scenarios (e.g., long-term residential exposures, shorter-term construction worker scenarios) and other factors (e.g., background levels in soil and groundwater). The final Site Condition Standard is the lowest of these “component values”. Therefore, an exceedance of the Standard does not necessarily indicate that concentrations are above those levels that are considered to be protective of human health. The purpose of a human health risk assessment (HHRA) is to determine whether COCs in on-site soil and groundwater have the potential to result in unacceptable risks to human health. Therefore, the maximum concentrations of COCs in on-site soil and groundwater that were in excess of the Site Condition Standards were compared to the MECP component values protective of human health. The following sections provide a qualitative evaluation of potential risks to on-site receptors via direct and indirect contact with COCs in soil and groundwater. 4.1 COCs in Soil Concentrations of multiple PAHs were in excess of the Site Condition Standards. The hazard to human health from the carcinogenic effects of PAHs in soil is evaluated on the basis of benzo(a)pyrene total potency equivalents (TPE), which is the sum of the estimated cancer potency relative to benzo(a)pyrene for all potentially carcinogenic PAHs. The benzo(a)pyrene TPE for a soil sample is calculated by multiplying the concentration of each individual PAH in the sample by its benzo(a)pyrene Toxic Equivalence Factor (TEF) and summing the products. The maximum concentrations of carcinogenic PAHs found in on-site soil were used to calculate a benzo(a)pyrene TPE (Table 4-1). Table 4-1 Benzo(a)pyrene Total Potency Equivalent for Carcinogenic PAHs in Soil PAH B(a)P Toxic Equivalence

Factors (TEF)a Maximum Concentration

(µg/g) B(a)P TPE (µg/g)

Acenaphthene 0.001 <0.05 0.00005 Acenaphthylene 0.01 0.32 0.0032 Benzo(a)anthracene 0.1 1.16 0.116 Benzo(a)pyrene 1.0 1.75 1.75 Benzo(b)fluoranthene 0.1 2.84 0.284 Benzo(g,h,i)perylene 0.01 1.27 0.0127 Benzo(k)fluoranthene 0.1 0.94 0.094 Chrysene 0.01 1.67 0.0167 Dibenzo(a,h)anthracene 1.0 0.28 0.28 Fluoranthene 0.01 3.49 0.0349 Indeno(1,2,3-cd)pyrene 0.1 1.2 0.12 Pyrene 0.001 2.75 0.00275 Benzo(a)pyrene Total Potency Equivalents (B(a)P TPE) 2.7 a TEF values were taken from MOECC (2011).


To determine which COCs in soil are in excess of values protective of human health, maximum concentrations of those chemicals retained as COCs in soil were compared to the MECP human health component values for coarse textured soils under a residential/institutional/parkland property use (Table 4-2). The human health component values presented in Table 4-2 are protective of the following scenarios:

• S1 Soil Contact – High-frequency, high-intensity soil ingestion and direct dermal contact for children and lifetime composite receptors on a residential/institutional/parkland property.

• S2 Soil Contact – Low-intensity, moderate-frequency soil ingestion and direct dermal contact for adults on a commercial/industrial property (adult outdoor worker).

• S3 Soil Contact – High-intensity, low-frequency soil ingestion, direct dermal contact, and inhalation of soil particulate protective of an adult worker digging in the soil (adult subsurface worker).

• Soil to Indoor Air (S-IA) – Migration of chemical vapours from soil to indoor air under a residential scenario.

• Soil to Outdoor Air (S-OA) – Migration of chemical vapours from soil to outdoor air. Table 4-2 Comparison of Maximum Concentrations of COCs in Soil to Component

Values Protective of Human Health (µg/g)

COC Maximum Concentration

MECP Component Values Protective of Human Healtha S1 S2 S3 S-IA S-OA

Acenaphthylene 0.32 7.8 9.6 360 0.45 96 Antimony 3.4 7.5 63 63 NV/NA NV/NA Arsenic 22.7 18b (0.96) 18b (1.3) 47 NV/NA NV/NA Benzene 0.05 9.3 13 480 0.21 17 Benz[a]anthracene 1.16 0.78 0.96 36 65 330 Benzo[a]pyrene 1.75 0.3b (0.078) 0.3b (0.096) 3.6 820 170 Benzo(a)pyrene TPE 2.7 0.3b (0.078) 0.3b (0.096) 3.6 820 170 Benzo[b]fluoranthene 2.84 0.78 0.96 36 5,500 2,000 Benzo[g,h,i]perylene 1.27 7.8 9.6 360 NV NV Benzo[k]fluoranthene 0.94 0.78 0.96 36 6,700 2,100 Dibenz[a,h]anthracene 0.28 0.1b (0.078) 0.1b (0.096) 3.6 33,000 430 Fluoranthene 3.49 7.8 9.6 360 250 2,500 Indeno[1,2,3-cd]pyrene 1.2 0.78 0.96 36 46,000 4,000 Methylnaphthalene 1.42 72 560 560 NV NV Molybdenum 5 110 1,200 1,200 NV/NA NV/NA Naphthalene 0.65 360 2,800 28,000 0.65 270 PHC F2 104 3,100 22,000 48,000 98 25,000 PHC F3 1,020 5,800 40,000 260,000 NV/NA NV/NA PHC F4 662 6,100 42,000 400,000 NV/NA NV/NA Phenanthrene 1.82 NV NV NV NV NV Pyrene 2.75 78 96 3,600 1,900 23,000 Toluene 0.27 1,700 18,000 180,000 6.2 34,000 Xylene 0.67 4,200 44,000 88,000 3.1 4,900 BOLDED values highlighted in grey are exceeded by the maximum on-site concentration. NV No value. Indicates that the MECP has not provided a component value. NA Not applicable. This chemical is insufficiently volatile to warrant assessment via this pathway. a Component values are the MECP (2016) human health component values for

residential/institutional/parkland property use with coarse textured soil. b Value represents the Ontario background concentration when the MECP component value (in brackets) is lower than the background concentration.


Exposure to COCs in Soil for Outdoor Workers and Park Visitors Concentrations of several carcinogenic PAHs (i.e., benzo(a)anthracene, benzo(a)pyrene, benzo(b)fluoranthene, benzo(k)fluoranthene, dibenzo(a,h)anthracene, indeno(1,2,3-cd)pyrene, and benzo(a)pyrene TPE) were in excess of the S1 component values derived to be protective of receptors that may have frequent direct contact with impacted soils. Each of these COCs, with the exception of benzo(k)fluoranthene, also exceeded the S2 component values protective of long-term outdoor maintenance workers. Concentrations of one or more PAHs that were in excess of these component values were found in three (3) (BH301, BH305, and BH307) of the four (4) samples analyzed for PAHs at depths ranging from 0 to 1.2 mbgs. This indicates that on-site soils contain concentrations of these COCs that may result in unacceptable health risks should workers and site visitors have the opportunity for frequent direct exposure to these soils. These samples were collected over a large strip of land along Park Street. Given the limited number of samples collected and analyzed for PAHs, it is unknown if contamination extends across the remainder of the Site. Supplemental sampling is recommended to further delineate PAH impacts in soil. It is also recommended that measures are taken to ensure that receptors do not have direct access to impacted soils. This may include soil excavation and/or the addition of hard caps (e.g., asphalt, concrete, or paving stones) or soft caps consisting of a geotextile membrane covered by a minimum of 30 cm of clean topsoil to any areas that contain concentrations of PAHs in excess of the S1 component values within 30 cm of the ground surface. Measures should be taken to prevent the redistribution of underlying soils during any future construction or maintenance activities. Multiple samples contained concentrations of arsenic that exceeded the S1 and S2 component values, however, these component values are significantly lower than the typical Ontario background concentration (18 µg/g). Only two (2) samples contained concentrations of arsenic that exceeded the background concentration (i.e., 19 µg/g at BH307 and 22.7 µg/g at BH112). Given that concentrations of arsenic only marginally exceeded the background concentration, arsenic in soil is not anticipated to represent a risk to workers or site visitors that exceeds that experienced by receptors under typical conditions across Ontario. Concentrations of all COCs are below the S3 component values derived to be protective of construction workers. Therefore, based on the available data, it is not anticipated that concentrations of PAHs or other chemicals in on-site soils represent a risk to workers involved in construction activities or underground utility maintenance. Concentrations of all COCs were below the S-OA component values protective of outdoor air exposure. Therefore, it is not anticipated that COCs in on-site soil will result in unacceptable risks to outdoor workers or site visitors via the outdoor air exposure pathway. Exposure to COCs in Soil via the Inhalation of Vapours in Indoor Air A single sample collected from BH308 contained PHC F2 at a concentration (104 µg/g) that marginally exceeded the S-IA component value (98 µg/g) derived to be protective of the migration of vapours from soil to indoor air. The next highest concentration (21 µg/g collected from BH112) was well below the S-IA value. The S-IA component value presented in Table 4-2 is derived to be protective of residents living within a single-family dwelling. Given that the Site is used for recreational purposes in which workers and site visitors would spend significantly less time within an on-site building than assumed under a residential scenario, it may be more appropriate to evaluate risks through a comparison of soil concentrations to the S-IA component value for commercial land use. This value assumes that receptors will spend 9.8 hours/day, 5 days/week, 48 weeks/year within an on-site building. Concentrations of PHC F2 are well below


the commercial S-IA value (380 µg/g). Therefore, based on the available data, concentrations of COCs in on-site soil are not considered to represent a risk to workers or site visitors via the inhalation of vapours in indoor air. 4.2 COCs in Groundwater To determine which COCs in groundwater were in excess of values protective of human health, maximum concentrations of COCs in groundwater were compared to the MECP human health component values for coarse-textured soils under a residential/institutional/parkland property use (Table 4-3). Under a non-potable groundwater scenario, human receptors have the potential to be indirectly exposed to COCs via the migration of vapours from groundwater to indoor air. To be protective of this scenario, the MECP has derived the GW2 component values. Due to the presence of shallow groundwater (<3 mbgs) at the Site, the Table 7 GW2 values were selected for this comparison to account for the limited opportunity for vapours to attenuate prior to reaching the building foundation. As described above for soils, the residential/institutional/parkland GW2 values for groundwater are protective of a residential exposure scenario which is considered to be highly conservative for a recreational property use. Comparison to the commercial GW2 values is considered to be more appropriate for the assessment of potential risks to on-site workers and property visitors. In addition to the comparisons described above, maximum concentrations were compared to the MECP ½ solubility limits to provide a theoretical indication for the potential occurrence of free-phase product. Table 4-3 Comparison of Maximum Concentrations of COCs in Groundwater to

Human Health Component Values (µg/L)

COC Maximum

Concentration (µg/L)

Table 7 GW2 Component Value

(Residential)a

Table 7 GW2 Component Value

(Commercial)b ½ Solubility Limit

Anthracene 1.7 NV NV 22 Benzo[a]pyrene 1.8 14 220 0.81 Benzo[b]fluoranthene 2.5 81 1,300 0.75 Benzo[g,h,i]perylene 1.1 NV NV 0.13 Benzo[k]fluoranthene 0.88 100 1,600 0.4 Chrysene 1.6 95 1,500 1 Indeno(1,2,3-cd)pyrene 1.1 190 3,100 0.095 Naphthalene 26 4.4 75 16,000 BOLDED values highlighted in grey are exceeded by the maximum on-site concentration. NV No value. Indicates that the MECP has not provided a component value. a Component values are the MECP (2016) Table 7 human health component values for

residential/institutional/parkland properties. b Component values are the MECP (2016) Table 7 human health component values for

commercial/industrial/community properties.

Migration of Vapours from Groundwater to Indoor Air The maximum concentration of naphthalene (26 ug/L) exceeded the Table 7 GW2 component value (4.4 ug/L) protective of residents via the inhalation of vapours migrating from impacted groundwater to indoor air. However, concentrations were well below the GW2 value protective of indoor workers under a commercial land use (75 ug/L). Given that the commercial GW2 values are more reflective of exposure frequencies under a recreational land use, concentrations of naphthalene in on-site groundwater are not considered to represent a risk to workers or site visitors via the inhalation of vapours in indoor air.


Potential for Free Product Concentrations of several PAHs exceeded the MECP ½-solubility limits, indicating that these chemicals may be present as free-phase product. While the presence of free-phase product does not on its own represent a risk to human health, it does represent a potential ongoing source of contamination to groundwater. The elevated concentrations identified in groundwater may be associated with the presence of sedimentation within the samples rather than the presence of free product. Future sampling should implement measures to minimize the collection of sediments within the groundwater samples. Overall, concentrations of PAHs in groundwater are not considered to represent a concern to human health.


5.0 ECOLOGICAL RISK ASSESSMENT The initial selection of COCs in soil and groundwater included a comparison of the maximum measured concentrations or highest detection limits to the Table 7 and 9 Standards. Based on this comparison, twenty-two (22) chemicals in soil and eight (8) chemicals in groundwater were retained as COCs for further evaluation in the RA. As described previously, the Site Condition Standards represent the lowest of a series of component values designed to be protective of a number of human and ecological receptors. Therefore, an exceedance of the Standard does not necessarily indicate that concentrations are above those levels that are considered to be protective of ecological receptors. The purpose of an ecological risk assessment (ERA) is to determine whether COCs in on-site soil and groundwater have the potential to result in unacceptable risks to ecological receptors. Therefore, the maximum concentrations of COCs in on-site soil and groundwater that were in excess of the Site Condition Standards were compared to the MECP component values protective of ecological receptors. The following sections provide a qualitative evaluation of potential risks to ecological receptors as a result of exposure to COCs in soil and groundwater. 5.1 Contaminants of Concern in Soil To further address the potential risks of COCs in soil to ecological receptors, maximum concentrations of those chemicals retained as COCs in soil were compared to component values derived to be protective of birds/mammals, plants/soil organisms, and the leaching of chemicals from soil to groundwater and the subsequent migration of groundwater to surface water (S-GW3) (Table 5-1). In addition, given that the nearest body of surface water is within 30 m of the Site, the MECP considers surface runoff of soils to sediment to be a pathway of potential concern. Therefore, concentrations were also compared to the sediment quality component values protective of sediment-dwelling organisms in the event impacted soils may enter the water body via surface runoff. The sediment quality component value is a sediment concentration designed to be protective of most benthic organisms. Sediment quality component values are provided in the Table 9 SCS and conservatively assume that benthic organisms will be exposed to COCs in sediment at concentrations that are equal to the maximum measured soil concentrations. Table 5-1 Comparison of Maximum Concentrations of COCs in Soil to Component

Values Protective of Ecological Receptors (µg/g)

COCs Maximum

Concentration (µg/g)

Plants/ Soil Organismsa

Birds/ Mammalsa S-GW3a Sediment

Qualityb

Acenaphthylene 0.32 NV NV 0.15 NV Antimony 3.4 20 25 NV NV Arsenic 22.7 20 51 NV 6 Benzene 0.05 25 370 14 NV Benz[a]anthracene 1.16 0.5 NV 5.1E+11 0.32 Benzo[a]pyrene 1.75 20 1,600 3.8E+13 0.37 Benzo[b]fluoranthene 2.84 NV NV 7.7E+13 NV Benzo[g,h,i]perylene 1.27 6.6 NV 1.2E+13 0.17 Benzo[k]fluoranthene 0.94 7.6 NV 2.5E+13 0.24 Dibenz[a,h]anthracene 0.28 NV NV 2.4E+13 0.06 Fluoranthene 3.49 50 0.69 40,000 0.75 Indeno[1,2,3- 1.2 0.38 NV 8.6E+13 0.2


Table 5-1 Comparison of Maximum Concentrations of COCs in Soil to Component Values Protective of Ecological Receptors (µg/g)

COCs Maximum

Concentration (µg/g)

Plants/ Soil Organismsa

Birds/ Mammalsa S-GW3a Sediment

Qualityb

cd]pyrene Methylnaphthalene 1.42 NV NV 76 NV Molybdenum 5 40 6.9 NV NV Naphthalene 0.65 0.6 380 200 NV PHC F2 104 150 NV 230 NV PHC F3 1,020 300 NV NV NV PHC F4 662 2,800 NV NV NV Phenanthrene 1.82 6.2 2,700 270 0.56 Pyrene 2.75 NV 4,700 2,600 0.49 Toluene 0.27 150 140 68 NV Xylene 0.67 95 96 26 NV BOLDED values highlighted in grey are exceeded by the maximum on-site concentration. NV No value. Indicates that the MECP has not provided a component value for this pathway/receptor group. a Component values are the MECP (2016) ecological component values for residential/institutional/parkland

property use with coarse textured soil. b Component values are the MECP (2016) Table 9 sediment quality component values for

residential/parkland/institutional/industrial/commercial/community property use for sites located within 30 m of a water body.

Potential Risks to Plants/Soil Organisms and Birds/Mammals Based on the comparison provided in Table 5-1, concentrations of arsenic, benz(a)anthracene, indeno(1,2,3-cd)pyrene, naphthalene, and PHC F3 exceeded the component values protective of plants/soil organisms. In addition, concentrations of fluoranthene exceeded the component value protective of bird/mammals. Concentrations of one or more PAHs that were in excess of these component values were found in three (3) (BH301, BH305, and BH307) of the four (4) samples analyzed for PAHs at depths ranging from 0 to 1.2 mbgs. Exceedances were limited to one sample for arsenic (BH307) and two samples for PHC F3 (BH308 and BH309). This indicates that on-site soils contain concentrations of these COCs that may result in adverse effects to sensitive terrestrial ecological receptors should they be exposed to these soils. These samples were collected over a large strip of land along Park Street. Given the limited number of samples collected across the Site as a whole, it is unknown if contamination extends across the remainder of the Site. Supplemental sampling can be conducted to further delineate impacts in soil. Alternatively, measures can be taken to ensure that ecological receptors do not have direct access to impacted soils. This may include soil excavation and/or the addition of hard caps (e.g., asphalt, concrete, or paving stones) or soft caps consisting of a geotextile membrane covered by a minimum of 30 cm of clean topsoil to any areas that contain concentrations of COCs in excess of the ecological component values within 30 cm of the ground surface. When planting deep rooting plants or trees, a sufficient thickness of topsoil should be added. Measures should be taken to prevent the redistribution of underlying soils during any future construction or maintenance activities. Risks to Aquatic Life The maximum concentration of acenaphthylene was in excess of the S-GW3 component value protective of aquatic life in bodies of surface water that may be impacted by the leaching of contamination from soil to groundwater and the subsequent migration of groundwater to surface water. Given that this value is based on theoretical estimates of the leaching of acenaphthylene from soil to groundwater, a more accurate approach for assessing potential risks to aquatic life


is through the consideration of concentrations measured in groundwater. The maximum concentration of acenaphthylene in groundwater (0.3 µg/L) was below the Table 7 and 9 Site Condition Standards, and the associated GW3 component value (1.4 µg/L) protective of aquatic life via the migration of impacted groundwater to surface water. Therefore, based on the available soil and groundwater data, it is not anticipated that concentrations of acenaphthylene in on-site soil or groundwater represent a risk to aquatic life in the Bobcaygeon River. Sediment Quality Concentrations of arsenic and several PAHs in soil exceeded the MECP sediment quality component values. Given that some of these exceedances were identified in soil samples collected between 0 and 0.6 mbgs, there is the potential for impacted soils to impact sediment quality in the Bobcaygeon River. To ensure that aquatic receptors are not subject to adverse effects, it is recommended that measures are taken to prevent surface runoff of impacted soils into the waterbody. This may include the installation of sediment fences, or the addition of hard caps (e.g., asphalt, concrete, or paving stones) or soft caps consisting of a geotextile membrane covered by a minimum of 30 cm of clean topsoil to any areas that contain elevated concentrations of these COCs in exposed soils. 5.2 Contaminants of Concern in Groundwater To further address the potential risks of COCs in groundwater to ecological receptors, maximum concentrations of those chemicals retained as COCs were compared to the GW3 component values protective of aquatic receptors in off-site bodies of surface water (Table 5-2). Table 5-2 Comparison of Maximum Concentrations of COCs in Groundwater to

Component Values Protective of Aquatic Life (µg/L)

COC Maximum Concentration (µg/L) GW3 Component Valuea

Anthracene 1.7 1 Benzo[a]pyrene 1.8 2.1 Benzo[b]fluoranthene 2.5 4.2 Benzo[g,h,i]perylene 1.1 0.2 Benzo[k]fluoranthene 0.88 1.4 Chrysene 1.6 0.7 Indeno(1,2,3-cd)pyrene 1.1 1.4 Naphthalene 26 6,200 BOLDED values highlighted in grey are exceeded by the maximum on-site concentration. a Values are the MECP (2016) Table 7 and 9 GW3 component values.

Risks to Aquatic Life Maximum concentrations of anthracene, benzo(g,h,i)perylene, and chrysene were in excess of the GW3 component values. Based on the results of the November 2019 supplemental sampling, concentrations of anthracene exceeded the GW3 value in BH304, while concentrations of benzo(g,h,i)perylene and chrysene exceeded the GW3 values in both monitoring wells (BH304 and BH307). Based on the proximity of BH304 to the Bobcaygeon River, there is the potential for impacted groundwater to reach surface water. While it is not anticipated that these exceedances represent a significant concern to aquatic life given the relatively low concentrations identified in groundwater and the volume of the Bobcaygeon River, further delineation of impacted groundwater is recommended.


6.0 OVERALL CONCLUSIONS AND RECOMMENDATIONS Intrinsik was retained by Cambium on behalf of Landscape Planning to assess potential risks to human health and ecological receptors associated with contaminants identified in on-site soil and groundwater at 45 Park Street, Bobcaygeon, Ontario. This was determined by conducting a screening-level evaluation, where concentrations of chemicals present in soil and groundwater were compared to the MECP Site Condition Standards and the associated component values derived to be protective of human health and the environment. This assessment was conducted using scientific approaches that are generally consistent with O.Reg.153/04 and in accordance with accepted practices and usual standards of thoroughness and competence for the profession of toxicology and environmental risk assessment. The assessment was prepared for internal due diligence purposes and not for submission to the MECP for the purpose of obtaining an RSC. The site characterization information provided within the Geotechnical Investigation (Cambium, 2019a) and the Phase Two ESA (Cambium, 2019b) were considered in the current assessment. Based on the available data, the results of the assessment of potential human health and ecological risks related to concentrations of COCs in on-site soil and groundwater indicated the following: Human Health Risk Assessment

• Concentrations of several PAHs were in excess of the MECP component values derived to be protective of site visitors and long-term outdoor workers that may have frequent direct contact with impacted soils. Concentrations of one or more PAHs that were in excess of these component values were found in three (3) (BH301, BH305, and BH307) of the four (4) samples analyzed for PAHs at depths ranging from 0 to 1.2 mbgs. This indicates that on-site soils contain concentrations of these COCs that may result in unacceptable health risks should workers and site visitors have the opportunity for frequent direct exposure to these soils. These samples were collected over a large strip of land along Park Street. Given the limited number of samples collected and analyzed for PAHs, it is unknown if contamination extends across the remainder of the Site. Supplemental sampling is recommended to further delineate PAH impacts in soil. It is also recommended that measures are taken to ensure that receptors do not have direct access to impacted soils. This may include soil excavation and/or the addition of hard caps (e.g., asphalt, concrete, or paving stones) or soft caps consisting of a geotextile membrane covered by a minimum of 30 cm of clean topsoil to any areas that contain concentrations of PAHs in excess of the MECP component values within 30 cm of the ground surface. Measures should be taken to prevent the redistribution of underlying soils during any future construction or maintenance activities.

• Multiple samples contained concentrations of arsenic that exceeded the MECP component values protective of site visitors and long-term workers, however, these component values are significantly lower than the typical Ontario background concentration. Only two (2) samples contained concentrations of arsenic that exceeded the background concentration. Given that concentrations of arsenic only marginally exceeded the background concentration, arsenic in soil is not anticipated to represent a risk to workers or site visitors that exceeds that experienced by receptors under typical conditions across Ontario.


• Concentrations of all chemicals in soil were below MECP component values derived to be protective of construction workers that may have direct contact with impacted soils. Therefore, concentrations of COCs in soil are not anticipated to represent a potential concern to construction workers that may have direct contact with impacted soils.

• Concentrations of all COCs were below MECP component values protective of outdoor air exposure. Therefore, it is not anticipated that COCs in on-site soil will result in unacceptable risks to outdoor workers or site visitors via the inhalation of outdoor air.

• Based on the available data, concentrations of COCs in on-site soil and groundwater are not considered to represent a risk to workers or site visitors via the inhalation of vapours in indoor air.

Ecological Risk Assessment

• Concentrations arsenic, PAHs, and PHCs in on-site soils were in excess of component values derived to be protective of plants/soil organisms and/or birds/mammals. Concentrations of one or more PAHs that were in excess of these component values were found in three (3) (BH301, BH305, and BH307) of the four (4) samples analyzed for PAHs at depths ranging from 0 to 1.2 mbgs. Exceedances were limited to one sample for arsenic (BH307) and two samples for PHC F3 (BH308 and BH309). This indicates that on-site soils contain concentrations of these COCs that may result in adverse effects to sensitive terrestrial ecological receptors should they be exposed to these soils. Given the limited number of samples collected across the Site, it is unknown if contamination extends across the entire Site. Supplemental sampling can be conducted to further delineate impacts in soil. Alternatively, measures can be taken to ensure that ecological receptors do not have direct access to impacted soils. This may include soil excavation and/or the addition of hard caps or soft caps consisting of a geotextile membrane covered by a minimum of 30 cm of clean topsoil to any areas that contain concentrations of COCs in excess of the ecological component values. When planting deep rooting plants or trees, a sufficient thickness of topsoil should be added. Measures should be taken to prevent the redistribution of underlying soils during any future construction or maintenance activities.

• Concentrations of arsenic and several PAHs in soil exceeded the MECP sediment quality component values. Given that some of these exceedances were identified in soil samples collected between 0 and 0.6 mbgs, there is the potential for impacted soils to impact sediment quality in the Bobcaygeon River. To ensure that aquatic receptors are not subject to adverse effects, it is recommended that measures are taken to prevent surface runoff of impacted soils into the waterbody. This may include the installation of sediment fences, or the addition of hard or soft caps to any areas that contain elevated concentrations of these COCs in exposed soils.

• Concentrations of anthracene, benzo(g,h,i)perylene, and chrysene in groundwater were in excess of the MECP component values protective of aquatic life. Based on the proximity of the exceedances to the Bobcaygeon River, there is the potential for impacted groundwater to reach surface water. While it is not anticipated that these exceedances represent a significant concern to aquatic life given the relatively low concentrations identified in groundwater and the volume of the Bobcaygeon River, further delineation of impacted groundwater is recommended.


7.0 DOCUMENT SIGN-OFF LIMITATIONS AND DISCLAIMER Intrinsik was retained by Cambium on behalf of Landscape Planning to assess potential human health and ecological risks associated with contaminants identified in on-site soil and groundwater. This was determined by conducting a screening-level evaluation, where concentrations of chemicals present in soil and groundwater were compared to the MECP Site Condition Standards and the associated component values derived to be protective of human health and the environment. Therefore, the current assessment only evaluated those pathways that were considered in the derivation of the Site Condition Standards. It is assumed that the soil and groundwater samples collected as part of the site investigations conducted by Cambium (2019a,b) provide an accurate representation of on-site conditions, however, these investigations were limited in scope and were not prepared with the intention of obtaining an RSC. Additional investigations would be required to provide complete horizontal and vertical delineation of contaminants in soil and groundwater. Concentrations in excess of those reported in these investigations may exist in areas of the Site, therefore, the accuracy of the risk estimates provided in this report are limited by the available site characterization data. Intrinsik provided this report for Cambium and Landscape Planning solely for the purpose stated in the report. Intrinsik does not have, and does not accept, any responsibility or duty of care whether based in negligence or otherwise, in relation to the use of this report in whole or in part by any third party. Any alternate use, including that by a third party, or any reliance on or decision made based on this report, are the sole responsibility of the alternative user or third party. Intrinsik does not accept responsibility for damages, if any, suffered by any third party as a result of decisions made or actions based on this report. Intrinsik makes no representation, warranty, or condition with respect to this report or the information contained herein other than that it has exercised reasonable skill, care, and diligence in accordance with accepted practice and usual standards of thoroughness and competence for the profession of toxicology and environmental assessment to assess and evaluate information acquired during the preparation of this report. Any information or facts provided by others, and referred to or utilized in the preparation of this report, is believed to be accurate without any independent verification or confirmation by Intrinsik. This report is based upon and limited by circumstances and conditions stated herein, and upon information available at the time of the preparation of the report. Intrinsik has reserved all rights in this report, unless specifically agreed to otherwise in writing with Cambium and Landscape Planning. Should you have any questions or require clarification, please do not hesitate to contact me at (905) 364-7800 x208 or via email at [email protected]. Yours sincerely, INTRINSIK CORP.

Adam Safruk, B.Sc., MES, QPRA Senior Environmental Health Scientist


8.0 REFERENCES Cambium. 2019a. Geotechnical Investigation Report – Bobcaygeon Beach Park, Bobcaygeon,

ON. 2019-08-09. Cambium Inc. Reference No.: 8854-001. Cambium. 2019b. Phase II Environmental Site Assessment – 45 Park Street, Bobcaygeon, ON.

2019-10-18. Cambium Inc. Reference No.: 8854-002. MECP. 2011. Rationale for the Development of Soil and Groundwater Standards for Use at

Contaminated Sites in Ontario, revised version April 15, 2011. Standards Development Branch, Ontario Ministry of the Environment, Conservation, and Parks (formerly the Ministry of the Environment and Climate Change).

MECP. 2016. Modified Generic Risk Assessment Approved Model. Queen’s Printer for Ontario,

2016. November 1, 2016. Standards Development Branch, Ontario Ministry of the Environment, Conservation, and Parks (formerly the Ministry of the Environment and Climate Change).

ATTACHMENT A

SITE CHARACTERIZATION FIGURES

P.O. Box 325, 52 Hunter Street EastPeterborough, Ontario, K9H 1G5

Tel: (705) 742.7900 Fax: (705) 742.7907www.cambium-inc.com

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- Base mapping features are © Queen's Printer of Ontario, 2019 (this doesnot constitute an endorsement by the Ministry of Natural Resources or theOntario Government).- Distances on this plan are in metres and can be converted to feet bydividing by 0.3048.- Cambium Inc. makes every effort to ensure this map is free from errors butcannot be held responsible for any damages due to error or omissions. Thismap should not be used for navigation or legal purposes. It is intended forgeneral reference use only.

PHASE II ENVIRONMENTAL

SITE ASSESSMENT

LANDSCAPE PLANNING LTD.Bobcaygeon Beach Park,

Bobcaygeon, Ontario

P.O. Box 325, 52 Hunter Street EastPeterborough, Ontario, K9H 1G5

Tel: (705) 742.7900 Fax: (705) 742.7907www.cambium-inc.com

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- Base mapping features are © Queen's Printer of Ontario, 2019 (this doesnot constitute an endorsement by the Ministry of Natural Resources or theOntario Government).- Distances on this plan are in metres and can be converted to feet bydividing by 0.3048.- Cambium Inc. makes every effort to ensure this map is free from errors butcannot be held responsible for any damages due to error or omissions. Thismap should not be used for navigation or legal purposes. It is intended forgeneral reference use only.

PHASE II ENVIRONMENTAL

SITE ASSESSMENT

LANDSCAPE PLANNING LTD.Bobcaygeon Beach Park,

Bobcaygeon, Ontario

ddra of 101, 103, and 105 brisbane road, toronto, ontario · 6605 hurontario street, suite 500,...

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