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Report To: Planning and Development Committee
Date of Meeting: January 7, 2019
Report Number: PSD -001-19 Resolution: JC -011-19
File Number: PLN 33.3.10 By-law Number:
Report Subject: Matters Relating to a Durham York Energy Centre Ambient Air
Monitorina Station 2018 Exceedance of Dioxins and Furans
Recommendations:
1. That Report PSD -001-19 be received; and
2. That all interested parties listed in Report PSD -001-19 and any delegations be advised
of Council's decision by the Department.
Municipality of Clarington Page 2
Report PSD -001-19
Report Overview
In accordance with Council Resolution #C-267-18, the purpose of this report is to provide to
Council the response received from Ministry of the Environment, Conservation and Parks
respecting their assessment of a recorded exceedance of dioxins and furans at the Durham
York Energy Centre's Courtice Water Pollution Control Plan ambient air monitoring station
on May 26, 2018.
1. Background
1.1 On September 17, 2018, Council heard the delegation of Wendy Bracken regarding an
exceedance of dioxins and furans at the Region of Durham's Durham York Energy
Centre (DYEC) ambient air monitoring station referred to as the Courtice Water
Pollution Control Plant (WPCP) Station. The subject exceedance was recorded on May
26, 2018. The measured dioxin and furan concentration of 0.109 picogram (pg)/m3 is
9% above the Ambient Air Quality Criteria of 0.1 pg/m3.
1.2 In accordance with the established protocol, a notification of a potential exceedance
was prepared by Stantec and submitted to the Region of Durham, Region of York,
Ministry of the Environment, Conservation and Parks, and the Region of Durham's
Medical Officer of Health (Attachment 1). The notification was also posted on the DYEC
website. The following summary of Stantec's review of the subject exceedance was
documented in the "Quarterly Ambient Air Quality Monitoring Report for the Durham
York Energy Centre — April to June 2018" (Stantec Consulting Ltd., August 8, 2018):
Winds were generally southwesterly over the 24-hour measurement period, for
which the Courtice WPCP Station is upwind of the DYEC. DIF concentrations
were also elevated regionally and likely due to a regional emissions source. The
measured DIF concentrations are not expected to have resulted in an adverse
effect on human health or the environment.
1.3 The September 17, 2018 delegation of Ms. Bracken raised a number of concerns with
respect to the subject exceedance. These concerns included the delay in providing
notification of the exceedance, the dioxin and furans concentrations recorded at the
same time at the two other ambient air monitoring stations established for the DYEC,
the potential risks associated with dioxins and furans, and concerns respecting the
DYEC air monitoring programs, equipment and protocols. In response, Council
approved Resolution #C-267-18, as follows:
That Staff write to the Ministry of the Environment, Conservation and Parks and
request their response in writing to the opinions expressed by Stantec in their
Municipality of Clarington Page 3
Report PSD -001-19
July 31, 2018 letter regarding dioxins and furans and concentrations measured in
the ambient air monitoring, including:
a) Whether they agree that the incinerator was "unlikely to have substantially
contributed to the elevated dioxins and furans concentration at the Courtice
WPCP Station measured on May 26, 2018;
b) Explain how if the dioxins and furans concentrations were from a regional
source rather than the DYEC, how the higher concentrations would be clustered
around the incinerator,
c) What the AMESA continuous monitoring of dioxins and furans showed for
the days in question, and whether the continuous monitoring has been validated,
That Municipal Staff report back to a future General Government Committee
meeting and provide copies of responses that are received to Members of
Council; and
That a copy of this resolution be forwarded to the Region of Durham.
2. Discussion
2.1 On October 19, 2018, Staff wrote to the Ministry of the Environment, Conservation and
Parks (MECP) providing a copy of Resolution #C-267-18 and requesting responses to
the questions raised.
2.2 On October 31, 2018, the MECP completed a review Stantec's assessment of the
subject exceedance, confirming the validity of the laboratory analysis and toxicological
review. A copy of this letter was posted on the DYEC website (Attachment 2).
2.3 On November 26, 2018, the MECP provided a written response to Staff's request of
October 19, 2018 (Attachment 3). The MECP have determined the results of Stantec's
assessment to be valid, and noted the upwind location of the Courtice WPCP Station
relative to the predominant winds during the monitoring period. In addition, the MECP
has concluded that no adverse effects would be expected based on the reported
concentrations. The MECP has indicated that a potential source for the subject
exceedance cannot be determined. Further, with respect to AMESA continuous
monitoring of dioxins and furans, data correlation could not be provided.
3. Concurrence
Not Applicable.
Municipality of Clarington
Report PSD -001-19
4. Conclusion
Page 4
In response to Council Resolution #C-267-18, Staff requested and received a written
response from the MECP respecting their assessment of a recorded exceedance of
dioxins and furans at the DYEC's Courtice WPCP ambient air monitoring station on May
26, 2018. A copy of the response and a separate related response provided to the
Regional Municipality of Durham are attached for Members of Council as requested.
G �.r
Submitted by. Reviewed by:
Faye Langmaid, RPP, FCSLA, Andrew C. Allison, B. Comm, LL.B
Acting Director of Planning Services CAO
Staff Contact: Amy Burke, Senior Planner, (905) 623-3379 Ext. 2423 or aburke@clarington.net
ACB/tg
Attachments:
Attachment 1 - Letter dated July 31, 2018 from Stantec Consulting Ltd. to the Regional
Municipality of Durham re: notice of elevated dioxins/furans at the DYEC
Courtice WPCP monitoring station on May 26, 2018
Attachment 2 - Letter dated October 31, 2018 from the Ministry of the Environment,
Conservation and Parks to the Regional Municipality of Durham re: review of
the notice of elevated dioxins/furans at the DYEC Courtice WPCP monitoring
station on May 26, 2018
Attachment 3 - Email and letter dated November 26, 2018 from the Ministry of the
Environment, Conservation and Parks re: response to the questions raised in
Resolution #C-267-18
List of interested parties to be notified of Council's decision is on file in the Planning Services
Department.
® Stantec 30OW-675 Cochrane Drive, Markham ON UR OB8
July 31, 2018
File: 160950528
Attention: Mr. Gioseph Anello, Manager,
Waste Planning, and Technical Services
The Regional Municipality of Durham
605 Rossland Road East
P.O. Box 623
Whitby, ON L1N 6A3
Dear Mr. Anello,
Reference: Durham York Energy Centre, Ambient Monitoring Program — Elevated Dioxins/Furans
at Courtice WPCP on May 26, 2018
The purpose of this letter is to provide notice and supplemental information to the Regions of Durham and
York of an elevated measured ambient concentration of Dioxins and Furans (D/F) on May 26, 2018 at the
Courtice WPCP Station. Formal notification of the Ontario Ministry of the Environment, Conservation and
Parks (MECP) and Durham Medical Officer of Health is required.
Following the guidance of the Ambient Monitoring Plan (AMP), Stantec reviewed and confirmed the D/F
filter results with the analytical laboratory (Maxxam) and conducted a review of the elevated D/F
concentration. Additionally, Stantec requested Maxxam to re -analyze the May 26th samples from the
Courtice WPCP, Rundle Road and Crago Road Stations. Furthermore, the potential impact on human
health was evaluated by a Stantec Toxicologist.
The following summarizes our findings:
The May 26, 2018, D/F Toxic Equivalency Quotient (TEQ) concentration at the Courtice WPCP
Station was determined to be 0.109 pg TEQ/m3 which is 9% above the MECP Schedule 3 air quality
Standard from Regulation 419/05 — Air Pollution — Local Air Quality (O. Reg. 419/05). D/F TEQ
concentrations at the Crago Road and Rundle Road Stations (0.098 and 0.091 pg TEQ/m3,
respectively) were also elevated relative to recent measurements. D/F TEQ values were below the
MECP's Upper Risk Threshold (URT) of 1.0 pg TEQ/m3.
2. Stantec requested the May 26, 2018 samples at all three stations be re -analyzed by Maxxam to
confirm the results. The re -run was found to be similar to the initial results. The average of the initial
and re -analysis lab results for the Courtice WPCP was 0.106 which is also above the air quality
Standard. Attachment A provides the laboratory results and Stantec's calculation of the TEQ values.
The D/F TEQ results for May 26, 2018 at each station are summarized below.
Design with community in mind
July 31, 2018
Mr. Gioseph Anello, Manager, Waste Planning, and Technical Services
Page 2 of 5
Reference: Durham York Energy Centre, Ambient Monitoring Program — Elevated Dioxins/Furans at Courtice WPCP on May 26, 2018
Table 1: Summary of Sampling of Dioxins and Furans on May 26, 2018
3. A review of the DYEC Continuous Emissions Monitoring (CEMs) data for May 261h does not show an
upset condition which could result in higher D/F emissions. Annual stack testing of the units was
conducted on May 31 and June 1, 2018 — the dioxin and furans stack testing results for both boilers
were less than 11 pg TEQ/Rm3 which is well below the applicable emissions criteria.
4. The MCP Air Quality Health Index was moderate during the morning of May 26th at the Oshawa and
Toronto East monitoring stations.
5. Attachment B includes a summary of the May 26th data at each station, based on the initial analysis.
Plots of the D/F measurements since the beginning of 2018 are provided for all three stations. The
plots show that typical background levels are around 0.02 pg TEQ/m3 and the May 26th
measurements are elevated relative to the rest of the 2018 measurements.
6. Attachment B also includes wind roses for May 26th at each station. The wind roses for each station
show low winds (less than 5 km/h) on May 26th, with winds blowing mainly from westerly to
southwesterly directions over the course of the day. Wind roses with hourly wind speed and direction
labelled with the hour of the day are also provided in the summary. Time series plots of the wind
direction measured at each station are also included. The wind direction for which the DYEC stack is
upwind of the monitor is shown by a purple dashed line in both sets of plots. The hourly wind roses
and time history plots show that over the course of the day, the DYEC was upwind of each of the
three monitoring stations for varying periods of time. Thus, we can expect that all three monitors
could have potentially been impacted by DYEC emissions but by varying amounts. At the Courtice
WPCP Station, the DYEC stack was upwind for only short periods of time around 8 a.m. and around
10 p.m. to 11 p.m. The Courtice WPCP measurement, which had the highest measured D/F
Design with community in mind
Concentration (pg TEQ/m3)
Courtice WPCP
Rundle Road
Crago Road
Initial Analysis
0.109
0.091
0.098
Second Analysis
0.103
0.095
0.101
Average
0.106
0.093
0.099
MECP Standard
0.1
MECP URT
1
3. A review of the DYEC Continuous Emissions Monitoring (CEMs) data for May 261h does not show an
upset condition which could result in higher D/F emissions. Annual stack testing of the units was
conducted on May 31 and June 1, 2018 — the dioxin and furans stack testing results for both boilers
were less than 11 pg TEQ/Rm3 which is well below the applicable emissions criteria.
4. The MCP Air Quality Health Index was moderate during the morning of May 26th at the Oshawa and
Toronto East monitoring stations.
5. Attachment B includes a summary of the May 26th data at each station, based on the initial analysis.
Plots of the D/F measurements since the beginning of 2018 are provided for all three stations. The
plots show that typical background levels are around 0.02 pg TEQ/m3 and the May 26th
measurements are elevated relative to the rest of the 2018 measurements.
6. Attachment B also includes wind roses for May 26th at each station. The wind roses for each station
show low winds (less than 5 km/h) on May 26th, with winds blowing mainly from westerly to
southwesterly directions over the course of the day. Wind roses with hourly wind speed and direction
labelled with the hour of the day are also provided in the summary. Time series plots of the wind
direction measured at each station are also included. The wind direction for which the DYEC stack is
upwind of the monitor is shown by a purple dashed line in both sets of plots. The hourly wind roses
and time history plots show that over the course of the day, the DYEC was upwind of each of the
three monitoring stations for varying periods of time. Thus, we can expect that all three monitors
could have potentially been impacted by DYEC emissions but by varying amounts. At the Courtice
WPCP Station, the DYEC stack was upwind for only short periods of time around 8 a.m. and around
10 p.m. to 11 p.m. The Courtice WPCP measurement, which had the highest measured D/F
Design with community in mind
July 31, 2018
Mr. Gioseph Anello, Manager, Waste Planning, and Technical Services
Page 3 of 5
Reference: Durham York Energy Centre, Ambient Monitoring Program — Elevated Dioxins/Furans at Courtice WPCP on May 26, 2018
concentration, was also the station for which winds were blowing from the DYEC to the station for the
least amount of time.
7. Based on the relative similarity of the D/F measurements at each station, and that the Courtice
WPCP Station was the primarily upwind station over the majority of the day, the most likely source for
the elevated D/F concentrations measured at each station was a regional source rather than the
DYEC.
8. The MECP develops Ambient Air Quality Criteria (AAQC) and air quality Standards based on
available toxicological information for individual chemicals. In general, the MECP uses an approach
that is based on identifying the highest reported exposure level that does not result in an observable
adverse health effect (referred to as the No Observable Adverse Effect Level or NOAEL), or the
lowest reported exposure associated with an observable adverse health effect (referred to as the
Lowest Observable Adverse Effect Level or LOAEL). For each chemical, the MECP sets the AAQC or
Standard at a concentration that is typically more than 100 times lower than the NOAEL or LOAEL
selected for use in the derivation. This approach is used to account for uncertainties that may exist in
the toxicological information used in the derivation of the Standard.
Using this approach, the MECP developed a 24-hour AAQC and Standard for D/F of 0.1 pg TEQ/m3
(where TEQ = Toxic Equivalency Quotient that represents the total concentration of D/F expressed
relative to the toxicity of 2,3,7,8-TCDD). The 24-hour value was derived from toxicological studies that
noted developmental effects associated with exposures to D/F (MECP 2009)1. The MECP considers
the 24-hour D/F concentration in air to represent an essentially negligible health risk (MECP, 2009).
This means that measured 24-hour average D/F concentrations that are at or below the
AAQC/Standard would represent a negligible human health risk for people in the local community.
On May 26, 2018, a D/F TEQ concentration of 0.109 pg TEQ/m3 was measured at the Courtice
WPCP station. Although the D/F TEQ measurement on May 26, 2018 exceeded the MECP 24-hour
AAQC, the exceedance was marginal (9% higher than the AAQC). In interpreting the human health
risks that may be associated with this exceedance it is important to understand the pattern and
frequency of these exceedances. Exposures that exceed a defined exposure limit on an intermittent
basis (exceedances are separated by weeks or months) do not represent as much of a human health
risk as exceedances that occur on a more frequent basis (occur on multiple consecutive sampling
events). Therefore, to properly evaluate the potential health risks that may be associated with the
MECP EBR website accessed Aug 21, 2017: http://www.ebr.gov.on.ca/ERS-WEB-
External/displaynoticecontent.do?noticeId=MTAW Dk2&status I d = MTY50TQz
Design with community in mind
July 31, 2018
Mr. Gioseph Anello, Manager, Waste Planning, and Technical Services
Page 4 of 5
Reference: Durham York Energy Centre, Ambient Monitoring Program — Elevated Dioxins/Furans at Courtice WPCP on May 26, 2018
occasional exceedances of the 24-hour D/F exposure limit, it is important to also consider the
frequency of these occurrences. The D/F TEQ concentrations at the Courtice WPCP station have
consistently been around 0.02 pg TEQ/m3 for the past several years and in the subsequent sample
collected June 19, 2018. In addition, the D/F TEQ concentrations at the Rundle Road and Crago
Road stations were 0.091 pg TEQ/m3 and 0.098 pg TEQ/m3, respectively.
Based on these results, the exceedance noted on May 26, 2018 would appear to represent an
isolated event and as such, would be considered to represent a negligible human health risk.
9. The MECP's Upper Risk Threshold (URT) for D/F TEQ is 1.0 pg TEQ/m3. The URTs are not air
quality Standards; rather, URTs represent management limits that are not directly tied to human
health effects. An exceedance of an URT is not an indication of potential human health effects.
Rather, an exceedance of an URT is an indication that timely action is required to lower the
concentrations, and thereby reduce potential human health risks (MECP, 2017)2. Although URTs are
not directly linked to the occurrence of human health effects, human health risks associated with
prolonged exposures to chemicals in air at concentrations that exceed their respective URTs would
not be considered negligible by the MECP.
2 MECP, February 2017: Guideline for the Implementation of Air Standards in Ontario (GIASO) (Guideline A-12)
(Version 3).
Design with community in mind
July 31, 2018
Mr. Gioseph Anello, Manager, Waste Planning, and Technical Services
Page 5 of 5
Reference: Durham York Energy Centre, Ambient Monitoring Program — Elevated Dioxins/Furans at Courtice WPCP on May 26, 2018
CONCLUSION
Based on Stantec's review, the DYEC is unlikely to have substantially contributed to the elevated D/F
concentration at the Courtice WPCP Station measured on May 26, 2018. Furthermore, the measured D/F
concentration is not expected to have resulted in an adverse effect on human health or the environment.
If you have comments or questions, please contact the undersigned.
Regards,
Stantec Consulting Ltd.
Bryan Leec( Ph.D.
Senior Toxicologist
Phone: (905) 381-3264
Fax: (905) 385-3534
Bryan.Leece@stantec.com
Gregory Croo , P.Eng.
Principal, Environmental Services
Phone: (416) 598-7687
Fax: (416) 596-6680
Gregory.Crooks@Stantec.com
Attachments: Attachment A D/F Data Tables
Attachment B Analysis
Connie Lim B.A.Sc.
Project Manager, Atmospheric Environment
Phone: (905) 415-6385
Fax: (905) 474-9889
Connie.Lim@Stantec.com
c. Christian Shelepuk, The Regional Municipality of Durham
Seth Dittman, The Regional Municipality of York
Celeste Dugas, District Manager, York -Durham District Office, MOEC
Dr. Robert Kyle, Commissioner & Medical Officer of Health, Region of Durham
Kimberly Ireland, Stantec Consulting Ltd.
pk v:\016091active\160950528\planning\correspondence\moecc\df_exceedance_may_2018\let_160950528_elevated-df_20180731_rev1.docx
Design with community in mind
ATTACHMENT A
D/F DATA TABLES
Dioxins and Furans
Location
Date
Start Time
• • hh:mm
Crago
0:00'
0.005
Crago (Duplicate)
0:00,
0.009
1,2,3,7,8 -Penta CDD *
Courtice
0:00'
0.005
Courtice
(Duplicate)
0:00 r
0.011
0.005
Rundle
'
0:00
1,2,3,4,7,8 -Hexa CDD *
Rundle
(Duplicate)
1
0:00
0.012
Sample Duration
hours
0.005
24.08
1,2,3,6,7,8 -Hexa CDD *
pg/ms
24.08
0.010
0.015
23.67
0.005
0.009
23.67
pg/ms
0.020
23.19
0.021
0.010
23.19
0.010
Technician
pg/ms
0.125
AW
0.128
0.083
AW
0.086
Octa CDD *
AW
0.348
0.354
AW
0.317
0.293
AW
Total Tetra CDD *
pg/ms
AW
0.075
Filter Number
0.083
0.042
GNA486-01
Total Penta CDD *
pg/m'
GNA486-01
0.021
0.065
GNA487-01
0.015
0.015
GNA487-01
pg/m'
0.173
GNA488-01
0.185
0.073
GNA488-01
0.092
Maxaam ID
pg/m'
0.263
GUN309
0.276
0.194
GUN309
0.172
2,3,7,8 -Tetra CDF **
GUN297
0.091
0.167
GUN297
0.181
0.141
GUN298
1,2,3,7,8 -Penta CDF **
pg/m'
GUN298
0.030
Maxxam Job #
0.041
0.041
B8C6452
2,3,4,7,8 -Penta CDF **
pg/m'
B8C6452
0.070
0.096
B8C6448
0.091
0.075
B8C6448
pg/m'
0.162
B8C6448
0.183
0.168
B8C6448
0.122
Total Volumetric Flow
Ami/sample
0.082
333.59
WHO...
0.079
333.59
WHO.r,
2,3,4,6,7,8 -Hexa CDF **
328.44
WH020DGMIVIMWENIPW
0.085
328.44
WHO.r,
0.069
294.74
WH02-IMIFWWMMIPPM
pg/m'
294.74
WHO2
Analytical Results
2,3,7,8 -Tetra CDD"
Units
pg
Value
<3.4
EDL
3.4
TEF
1
Value
17.2
EDL
7.2
TEF
1
V. lue
<3.3
EDL
3.3
TEF
1
<6.1
b.l
TEF
1
V, lue
<3.6
EDL
3.6
TEF
1
<5.6
0.080
TEF
1,2,3,7,8 -Penta CDD
pg
<3.6
3.6
1
<6.7
6.7
1
<3.6
3.6
1
<7.0
7.0
1
<3.2
3.2
1
<8.6
8.6
1
1,2,3,4,7,8 -Hexa CDD *
pg
<3.2
3.2
0.1
<7.9
7.9
0.1
<3.4
3.4
0.1
<7.5
7.5
0.1
<3.0
3.0
0.1
<6.8
6.8
0.1
1,2,3,6,7,8 -Hexa CDD `
pg
4.3
3.3
0.1
<6.4
6.4
0.1
5.0
3.5
0.1
<6.1
6.1
0.1
<3.1
3.1
0.1
<5.5
5.5
0.1
1,2,3,7,8,9 -Hexa CDD *
pg
6.8
3.1
0.1
<6.8
6.8
0.1
6.8
3.2
0.1
<6.5
6.5
0.1
4.3
2.9
0.1
<5.9
5.9
0.1
1,2,3,4,6,7,8 -Hepta CDD '
pg
41.6
3.3
0.01
29.8
6.6
0.01
42.2
3.5
0.01
27.3
6.6
0.01
28.1
2.8
0.01
25.3
4.1
0.01
Octa CDD *
pg
116
3.1
0.0003
118
7.1
0.0003
131
3.2
0.0003
104
7.2
0.0003
86.5
2.8
0.0003
93.3
9.8
0.0003
Total Tetra CDD `
pg
29.1
3.4
25.0
7.2
31.9
3.3
Total Hexa CDD
27.2
6.1
12.5
3.6
7.5
5.6
pg TEQ/m'
Total Penta CDD *
pg
30.3
3.6
<14 (1)
14
pg TEQ/m'
21.5
3.6
0.0198
<16 (1)
16
0.0139
<9.0 (2)
9.0
0.0013
<8.6 (1)
8.6
0.0012
Total Hexa CDD `
pg
57.6
3.2
0.031
37.1
7.0
0.025
60.9
3.4
1,2,3,4,7,8 -Hexa CDF
24.1
6.7
0.0165
34.4
3.0
0.0138
27.1
6.0
pg TEQ/m'
Total Hepta CDD •
pg
87.9
3.3
0.0072
69.6
6.6
pg TEQ/m'
90.6
3.5
0.0095
63.6
6.6
0.0069
59.4
2.8
0.0019
50.6
4.1
0.0013
2,3,7,8 -Tetra CDF *'
pg
<61 (1)
61
0.1
55.8 (2)
6.8
0.1
64.9
3.3
0.1
59.6
7.1
0.1
41.6
3.6
0.1
41.1
6.8
0.1
1,2,17,8 -Penta CDF **
pg
15.0
3.2
0.03
10.1
6.8
0.03
15.9
3.3
0.03
13.6
6.9
0.03
12.1
3.5
0.03
<12
12
0.03
2,3,4,7,8 -Penta CDF **
pg
34.6
3.2
0.3
23.3
6.9
0.3
31.4
3.2
0.3
26.9
6.9
0.3
26.7
3.5
0.3
22
12
0.3
1,2,3,4,7,8 -Hexa CDF ••
pg
54.1 (2)
3.1
0.1
55.1 (3)
6.6
0.1
60.1 (1)
2.9
0.1
55.1 (2)
6.7
0.1
40.7(l)
3.0
0.1
6.1 (2)
7.6
0.1
1,2,3,6,7,8 -Hexa CDF"
pg
27.3
3.2
0.1
23.8
5.6
0.1
27.2
2.9
0.1
26.1
5.7
0.1
21.1
3.1
0.1
18.3
6.5
0.1
2,3,4,6,7,8 -Hexa CDF ••
pg
29.5
3.4
0.1
28.4
7.0
0.1
31.1
3.1
0.1
<29 (1)
29
0.1
20.2
3.3
0.1
20.3
8.1
0.1
1,2,3,7,8,9 -Hexa CDF"
pg
6.3
3.6
0.1
<8.3
8.3
0.1
5.2
3.4
0.1
<8.5
8.5
0.1
5.2
3.5
0.1
<9.6
9.6
0.1
1,2,3,4,6,7,8 -Hepta CDF ••
pg
141
2.6
0.01
94.2
5.2
0.01
160
2.7
0.01
111
5.8
0.01
97.1
3.2
0.01
67.4
6.7
0.01
1,2,3,4,7,8,9 -Hepta CDF"
pg
31.0
3.1
0.01
24.9
8.3
0.01
29.0
3.2
0.01
31.0
9.3
0.01
23.6
3.8
0.01
24
11
0.01
Octa CDF **
pg
106
3.0
0.0003
89.3
8.4
0.0003
109
2.8
0.0003
108
6.0
0.0003
73.2
4.0
0.0003
70.6
7.2
0.0003
Total Tetra CDF"
pg
385
3.5
385
6.8
381
3.3
374
7.1
303
3.6
311
6.8
Total Penta CDF ""
pg
399
3.2
238
6.8 1
375
3.2
349
6.9
321
3.5
142
12
Total Hexa CDF **
pg
317
3.3
293
6.7
315
3.1
235
6.9
262
3.2
214
7.8
Total Hepta CDF **
pg
263
2.9
189
6.4
282
3.0
216
7.1
199
3.5
157
8.3
Toxic Equivalency
pg
Notes:
* CDD = Chloro Dibenzo-p-Dioxin ** CDF = Chloro Dibenzo-p-Furan
2,3,7,8 -Tetra CDD *
pg/m'
0.005
0.011
0.005
0.009
0.006
0.009
1,2,3,7,8 -Penta CDD *
pg/m'
0.005
0.010
0.005
0.011
0.005
0.015
1,2,3,4,7,8 -Hexa CDD *
pg/m'
0.005
0.012
0.005
0.011
0.005
0.012
1,2,3,6,7,8 -Hexa CDD *
pg/ms
0.013
0.010
0.015
0.009
0.005
0.009
1,2,3,7,8,9 -Hexa CDD *
pg/ms
0.020
0.010
0.021
0.010
0.015
0.010
123,447,8 -Hepta CDD *
pg/ms
0.125
0.089
0.128
0.083
0.095
0.086
Octa CDD *
pg/ms
0.348
0.354
0.399
0.317
0.293
0.317
Total Tetra CDD *
pg/ms
0.087
0.075
0.097
0.083
0.042
0.025
Total Penta CDD *
pg/m'
0.091
0.021
0.065
0.024
0.015
0.015
Total Hexa CDD *
pg/m'
0.173
0.111
0.185
0.073
0.117
0.092
Total Hepta CDD *
pg/m'
0.263
0.209
0.276
0.194
0.202
0.172
2,3,7,8 -Tetra CDF **
pg/m'
0.091
0.167
0.198
0.181
0.141
0.139
1,2,3,7,8 -Penta CDF **
pg/m'
0.045
0.030
0.048
0.041
0.041
0.020
2,3,4,7,8 -Penta CDF **
pg/m'
0.104
0.070
0.096
0.082
0.091
0.075
1,2,3,4,7,8 -Hexa CDF **
pg/m'
0.162
0.165
0.183
0.168
0.138
0.122
1,2,3,6,7,8 -Hexa CDF **
pg/m'
0.082
0.071
0.083
0.079
0.072
0.062
2,3,4,6,7,8 -Hexa CDF **
pg/m'
0.088
0.085
0.095
0.044
0.069
0.069
1,2,3,7,8,9 -Hexa CDF **
pg/m'
0.019
0.012
0.016
0.013
0.018
0.016
1,2,3,4,6,7,8 -Hepta CDF **
pg/m'
0.423
0.282
0.487
0.338
0.329
0.229
1,2,3,4,7,8,9 -Hepta CDF **
pg/m'
0.093
0.075
0.088
0.094
0.080
0.081
Octa CDF **
pg/m'
0.318
0.268
0.332
0.329
0.248
0.240
Total Tetra CDF **
pg/m'
1.154
1.154
1.160
1.139
1.028
1.055
Total Penta CDF **
pg/m'
1.196
0.713
1.142
1.063
1.089
0.482
Total Hexa CDF **
pg/m'
0.950
0.878
0.959
0.715
0.889
0.726
Total Hepta CDF **
pg/m'
0.788
0.567
0.859
0.658
0.675
0.533
Toxic Equivalency
pg/m'
TOTAL TOXIC EQUIVALENCY
Calculated Concentration.EIW
DaTEQIM3
0.098
Crag.
0.101
Crago
0.109
Courtice
0.103
co.rt',ce (Duplicate)
0.091
Rundle
0.095
Rundle (Duplicate)
TEQ
2,3,7,8 -Tetra CDD *
nils M=
r
0.005
26/05/2018
0.011
26/05/2018
0.005
0.009
0.009
pg TEQ/m'
0.006
1,2,3,7,8 -Penta CDD
pg TEQ/m'
0.005
0.010
0.005
0.011
0.005
0.015
1,2,3,4,7,8 -Hexa CDD
pg TEQ/m'
0.0005
0.0012
0.0005
0.0011
0.0005
0.0012
1,2,3,6,7,8 -Hexa CDD
pg TEQ/m'
0.0013
0.0010
0.0015
0.0009
0.0005
0.0009
1,2,3,7,8,9 -Hexa CDD
pg TEQ/m'
0.0020
0.0010
0.0021
0.0010
0.0015
0.0010
123,447,8 -Hepta CDD
pg TEQ/m'
0.0012
0.0009
0.0013
0.0008
0.0010
0.0009
Octa CDD
pg TEQ/m'
0.00010
0.00011
0.00012
0.00009
0.00009
0.00009
Total Tetra CDD
pg TEQ/m'
Total Penta CDD
pg TEQ/m'
Total Hexa CDD
pg TEQ/m'
Total Hepta CDD
pg TEQ/m'
2,3,7,8 -Tetra CDF **
pg TEQ/m'
0.0091
0.0167
0.0198
0.0181
0.0141
0.0139
1,2,3,7,8 -Penta CDF
pg TEQ/m'
0.0013
0.0009
0.0015
0.0012
0.0012
0.0006
2,3,4,7,8 -Penta CDF
pg TEQ/m'
0.031
0.021
0.029
0.025
0.027
0.022
1,2,3,4,7,8 -Hexa CDF
pg TEQ/m'
0.0162
0.0165
0.0183
0.0168
0.0138
0.0122
1,2,3,6,7,8 -Hexa CDF
pg TEQ/m'
0.0082
0.0071
0.0083
0.0079
0.0072
0.0062
2,3,4,6,7,8 -Hexa CDF
pg TEQ/m'
0.0088
0.0085
0.0095
0.0044
0.0069
0.0069
1,2,3,7,8,9 -Hexa CDF
pg TEQ/m'
0.0019
0.0012
0.0016
0.0013
0.0018
0.0016
1,2,3,4,6,7,8 -Hepta CDF
pg TEQ/m'
0.00423
0.00282
0.00487
0.00338
0.00329
0.00229
1,2,3,4,7,8,9 -Hepta CDF
pg TEQ/m'
0.00093
0.00075
0.00088
0.00094
0.00080
0.00081
Octa CDF
pg TEQ/m'
0.000095
0.000080
0.000100
0.000099
0.000075
0.000072
Total Tetra CDF
pg TEQ/m3
Total Penta CDF
pg TEQ/m'
Total Hexa CDF
pg TEQ/m'
Total Hepta CDF
TEQ/m3
TOTAL TOXIC EQUIVALENCY
pq TEQ/m'
0.098
0.101
0.109
0.103
0.091
0.095
Notes:
EDL = Estimated Detection Limit
* CDD = Chloro Dibenzo-p-Dioxin, ** CDF = Chloro Dibenzo-p-Furan
TEF = Toxic Equivalency Factor, TEQ = Toxic Equivalency Quotient
WHO(2005): The 2005 World Health Organization, Human and Mammalian Toxic
ATTACHMENT B
ANALYSIS
Dioxins and
Furans
Concentration
Hourly Wind Rose on May 26,
Station
D/F Concentration through 2018
Wind Rose on May 26, 2018
Wind Direction Time Series on May 26, 2018
on May 26,
2018
2018
(PgTEQ/ m3)
0.12
Wind Speed and Direction at
c
_. NORTH........
Crago Road Station during May 26
C
0. 1'
, .........
e
400
�'•. : , •.
3s
`2�%
300
- 0.0614%
o
,:
,,•,,. .,
" 0.04
..,.20
'
200
c
..�
2
a
V
:WEST{
FAST:
o+• ••�.••�.
150
Crago
0.098
0 0.02AL
•
•
1.4•g•�
100
V
15 1k I i
1i
0
L
S
:3
SD
LL
y
9
S S-�
c�
U-�
•, .... ..
SPD
D
C-�
O�
]-
2O 2O
��
2a o Q�
�O
-
�Q
:.,; "•..,,:,"
........._. i""' ""' "
-) 4.00 05.00
�'•,.,
235 - 1%
j�0 ?QJ ?Q]. ��. �C{J. S�. �. ,QJ. 84J. 94J. ZOO jZ 7j0 ?QJ. ?�. 34J. p�. S� SQJ. �. �C{J.9�. ZOO Z'rb jib
0
0.00 .q7 ,� .q0 ,47 .� .� .q .cb ,� 0 q0 60 q7 ,b 47 4) X6, X00 X00
X
0
8
1� 1�
1� 8 8N
......
"'..:..........
3.00-4.00
'--
��,
_j,
9�9� 9� 9� 9y2 9� 9y 9� 9q� 9y2 9� 9y2 n� n A 9
Ri ti y
........._.SOUTH._.:
2.00-3.00
J
❑
Date
1.00-2.00
_
1m
Time on May 26,2018
0 0.50-1.00
Calms: 13.01%
- 1 -minute Wind Direction -24hour Average W nd Direction ..... Wind Direction Toward DYECStack
•
D/F Samples
Median Concentration
0.12
Wind Speed and Direction at
m
Rundle Road Station during May 26
E
-
NORTH,
-
C
0.1
%''.
WiM olrectien ('I
a�
lt�
._
.' ,' ....:.............�'
'• 35%
�
3 So
za%
41
300
0.06
.,'21%
-
Ia.L L
+
-.,
X14%
'
19
250
-
N
..101 .... ..... .................
0.04
•
7%
:<,
z?
0 200
:...........i...........'.......... i...
;WEST:
:..........
... ...............)
:FAST:
5 65 �. 20
0 a
150
,a , a
Rundle
0.091
0 0.02
•,,.
9 .Bw„�
100
0
I'.
rL
W S.
50
LL
C '!
Y V 2
V
-6"
�(
9S�
0
���
�� ���
�2 �Q V c0
s�
... ...
�'--
'=5.00
� 400-soa
2 `
� '
J24. S 6 �0 00 00 . 9 9. Z0 00 "00O .lr .I2 J. 2,0 L'b 00 00 008.00 9. !O. '7Z J2.
000 OOOOOOO
d�
�d8 ��8
a�8 d� 18
�d8
8
"'..t.....,
300 400
..�
09 479 �9 4i9 4)9 W9 479 �9 4)9,� 9� OO q W 2i4)q q,-4) 47 4) 4)q 4) 47gO000A000A0009
���� ���
9'Ll '9'Ll y7
.o
❑
...............SOUrH.--.
� 2.00-3.00
Date
E] 1.00-2.00
so
Time on May 26,2018
D 0.50 -1.00
Calms: 2.14%
- 1-inute Wind Direction-24hou,A-ge Wind Direction ..... Wind Di rection Toward DYEC Stack
•
D/F Samples
Median Concentration
-- xre4 °t..x°e rwwa°v�slaa
0.12
Wind Speed and Direction at
m
Courtice WPCP Station during May 26
ibkw
400
w
F
0.08
i
35%
~
350
�+
i
i:2.8%
300
s 0.06
.:............
;'z1%
_
Courtice
0.109
0 04
V
c 0.02
;:.
7%,.-;
----------------------------......:.....
'iWESTi �., ...
l
. ... ......' EP,STi
•
250
-0
v zoo
150
„
'° ie�
18 ` 21
loo
M7,
WIND SPEM
0
i
-5.00
0
I
_
�o
�o �o
��
��
"
:-
400 5 00
19
Z?0�00�47�
o o�
0 18 1�
o�
o�
3.00 - 4.00
:
00
�47 �� �� �� ���� �� 00
����4i� �� Q�(b �(bZbq�00,pO92109'%1
.........................xSOUTH ......,.
� 2.00-3.00
O'0��A0009
'19 p�47
O 1.00-2.00
as
Date
3.50-1.00
Time on May 26, 2018
Calms: 9.72%
-1-minute Wind Direction -24hour A-ge Wnd Direction ••... Wind Direction Toward DYECStack
•
D/F Samples
Median Concentration
-- mea or.sn°erw.oa °r�s1�a
Ministry of the Environment,
Conservation and Parks
Central Region
York Durham District Office
230 Westney Road South, 5'h Floor
Ajax ON LIS 7J5
Toll -Free : 1-800-376-4547
Telephone.: 905-427-5600
Fax: 905-427-5602
October 31, 2018
Ministere de I'Environnement, de is
Protection de la nature et des Pares
Region du Centrel
Bureau de district de York Durham
230 route Westney sud, 5e 6tage
Ajax ON LIS 7J5
Sans frais : 1-800-376-4547
T616phone : 905 427-5600
Telecopieur : 905 427-5602
Gioseph Anello, MEng, PEng, PMP
Manager of Waste Planning & Technical Services
The Regional Municipality of Durham
605 Rossland Road East
Whitby ON L1 N 6A3
Re: Durham York Energy Centre
Ambient Air Monitoring Program
Dioxin and Furan Exceedance at Courtice Station — May 26, 2018
Ontario
The ministry has completed a review of the letter from Stantec Consulting Ltd., dated July 31, 2018,
regarding the dioxin and furan exceedance at the Courtice ambient air monitoring station.
On May 26, 2018, a dioxin and furan concentration of 0.109 pg (picogram)/m3 was recorded at the
Courtice station. The result was 9% above the Ambient Air Quality Criteria of 0.1 pg/ml. Elevated
dioxin and furan concentrations were also detected at the Rundle Road station (0.091 pg/ml) and at the
Crago Road station (0.098 pg/ml) for the same monitoring period.
The ministry completed a data validation review and toxicological assessment of the dioxin and furan
results. The dioxin and furan results are deemed to be valid based on a review of the laboratory
analysis and the recorded air flows. The toxicological review concluded no adverse effects would be
expected based on the reported concentrations.
During the monitoring period the predominant winds were blowing from the southwest and west which
places the Courtice station upwind of the Durham York Energy Centre. A potential source of the
elevated dioxin and furan concentrations could not be determined due to light winds and low
mixing/dispersion conditions.
If you have any questions please contact me at (905)4275626, celeste.dugas(aoontario.ca or Phil Dunn
at (905)427-5627, philip.dunn@ontario.ca.
Yours truly,
Celeste Dugas
District Manager
York Durham District
c: L, Fortuna, Region of Durham
S. Dittman, Region of York
M. Neild, Covanta
From:
Duaas, Celeste (MECP)
To:
Burke, Amv
Cc:
Dunn, Philip (MECP); Langmaid, Fay; Butchart, Jeff (MECP)
Subject:
RE: Durham York Energy Centre D/F Exceedance 2018-05-26 (MOC File PLN 33.3.10)
Date:
Monday, November 26, 2018 1:38:16 PM
Attachments:
Nov.26,2018 Response to Clarinaton Council Resolution.Ddf
Elevated DF -MECP Letter Oct.31, 2018.Ddf
Amy,
The attached letter has been prepared in response to the information requested by
the Municipality of Clarington as outlined in resolution #C-267-18.
I've also attached a copy of the letter sent to the Region of Durham from the Ministry
of Environment, Conservation and Parks, dated October 31, 2018, regarding the
elevated concentration of dioxin and furan at the Courtice ambient air monitoring
station.
As stated in the attached, the ministry completed a data validation review and
toxicological assessment of the dioxin and furan results and we have determined the
results to be valid. In addition, the ministry has concluded that no adverse effects
would be expected based on the reported concentrations.
If you have any questions please contact me at (905)427-5626,
celeste.dugas&ontario.ca or alternatively you can contact Senior Environmental
Officer Phil Dunn at (905)427-5627, philip.dunnl'gontario.ca.
Regards,
Celeste Dugas
District Manager
York Durham District Office
Ministry of Environment, Conservation and Parks
230 Westney Road South, 5th Floor
Ajax, ON Ll S 7J5
celeste.dugas e.ontario.ca
Newmarket Phone: (905)836-7446
Ajax Phone: (905)427-5626
From: Burke, Amy [mailto:ABurke@clarington.net]
Sent: October -19-18 9:52 AM
To: Dugas, Celeste (MECP) <Celeste.Dugas@ontario.ca>
Cc: Dunn, Philip (MECP) <Philip.Dunn @ontario.ca>; Langmaid, Faye <flangmaid@clarington.net>
Subject: Durham York Energy Centre D/F Exceedance 2018-05-26 (MOC File PLN 33.3.10)
Good Morning Celeste,
At the September 17, 2018 Municipality of Clarington Council meeting, questions
relating to the measured dioxins and furans exceedance at the Durham York Energy
Centre's (DYEC) Courtice Water Pollution Control Plan monitoring station on May 26,
2018 and the supplemental information prepared by Stantec (letter dated July 31,
2018 to Gioseph Anello, Region of Durham) were raised. The attached resolution
#C-267-18 was subsequently passed by Council with respect to requesting
information from the Ministry of the Environment, Conservation and Parks (MECP) on
this matter.
Can the MECP please provide responses the three questions raised in the attached
resolution, including:
1. Does the MECP agree that the incinerator was "unlikely to have substantially
contributed to the elevated dioxins and furans concentration at the Courtice
WPCP Station measured on May 26, 2018"?
2. If the dioxins and furans concentrations were from a regional source rather
than the DYEC, is there an explanation for how the higher concentrations
would be clustered around the incinerator?
What did the AMESA continuous monitoring of dioxins and furans show for the days
in question, and has the continuous monitoring been validated?
We appreciate your support with this matter.
Kind regards,
Amy
Amy Burke
Senior Planner — Special
Projects
Planning Services Department
Municipality of Clarington
40 Temperance Street, Bowmanville ON L1 C 3A6
905-623-3379 ext. 2423 11-800-563-1195
www.clarington.net
Ministry of the Environment,
Conservation and Parks
Central Region
York Durham District office
230 Westney Road South, 5'h Floor
Ajax ON L1S 7,15
Toll -Free: 1.800-376-4547
Telephone.: 905-427-5600
Fax: 905-427-5602
November 26, 2018
Ministere de I'Environnement, de la
Protection de la nature et des Pares
Region du Centrel
Bureau de district de York Durham
230 route Westney sud, 5° etage
Ajax ON US 7,15
Sans frais : 1-800-376-4547
Telephone : 905 427-5600
Telecopieur : 905 427-5602
Amy Burke, MEng, PEng, PMP
Senior Planner — Special
Projects
Planning Services Department
Municipality of Clarington
40 Temperance Street
Bowmanville ON UC 3A6
Re: Clarington Council Resolution, dated September 17, 2818
Durham York Energy Centre (DYEC)
Ambient Air Monitoring Program
Dioxin and Furan Exceedance at the Courtice Station
Dear Ms. Burke:
Ontario
1 am responding to your email and attached council resolution regarding the elevated
concentration of dioxin and furan at the Courtice ambient air monitoring station, on May
26, 2018.
I've provided a response to each question in the referenced council resolution:
Q: Does the MECP agree that the incinerator was "unlikely to have substantially
contributed to the elevated dioxins and furans concentration at the Courtice
WPCP Station measured on May 26, 2018"?
A: The ministry agrees with the consultants' conclusion that the DYEC was unlikely
to be the major contributor to the elevated concentration at the Courtice station.
The ministry review of the Stantec Consulting Ltd. letter to the Region of Durham,
dated July 31, 2018, included a data validation review and toxicological
assessment of the dioxin and furan results. The ministry has determined the
results to be valid and the toxicological review concluded that no adverse effects
would be expected based on the reported concentrations.
During the monitoring period the predominant winds were from the southwest
and west which places the Courtice monitoring station upwind of the DYEC.
A potential source of the elevated dioxin and furan concentrations could not be
determined due to light winds and low mixing/dispersion conditions.
Covanta completed the annual voluntary source test the week of May 28 to June
1, 2018. The results of the test indicate that dioxin and furan concentrations in
emissions from the DYEC were significantly below the compliance limit.
Q: If the dioxins and furans concentrations were from a regional source rather than
the DYEC, is there an explanation for how the higher concentrations would be
clustered around the incinerator?
A: As indicated, a potential source of the elevated dioxins and furans concentrations
could not be determined. At this time, there is no data from other monitoring
locations that would indicate that there is a cluster of high concentrations around
the incinerator.
The continuation of the ambient air monitoring program will enable the ministry to
assess trends and may help to identify other potential sources that affect local
ambient air quality.
Q: What did the AMESA continuous monitoring of dioxins and furans show for the
days in question, and has the continuous monitoring been validated?
A: Covanta and the Region of Durham continue to evaluate the data from the
AMESA system (collected monthly since late 2015) to determine if the data
provides an accurate estimate of dioxins and furans in emissions and if it can be
correlated to source test results. Once the evaluation of the AMESA system is
completed the data will be used to assess the ongoing performance of the air
pollution control system. The data from the AMESA system is not intended to be
used for compliance verification.
If you have any questions please contact me at (905)427-5626,
celeste.dugas(crpontario.ca or Phil Dunn, Senior Environmental Officer, at (905)427-
5627, philip.dunn( )ontario.ca.
Yours truly,
Celeste Dugas
District Manager
York Durham District
c: L. Fortuna, Region of Durham
Ministry of the Environment,
Conservation and Parks
Central Region
York Durham District Office
230 Westney Road South, 5° Floor
Ajax ON US 7,16
Toll -Free: 1-800-3764547
Telephone.: 905-427-5600
Fax: 905-427-5602
October 31, 2018
Ministbre de I'Environnement, de Is
Protection de Ia nature at des Pares
Region du Centrel
Bureau de district de York Durham
230 route Westney sud, 50 btage
Ajax ON L1S 7J5
Sans frais : 1-800-376.4547
Tblbphone : 905 427-5600
Telbcopieur : 905 427-5602
Gioseph Anello, MEng, PEng, PMP
Manager of Waste Planning & Technical Services
The Regional Municipality of Durham
605 Rossland Road East
Whitby ON LIN 6A3
r�
Ontario
Re: Durham York Energy Centre
Ambient Air Monitoring Program
Dioxin and Furan Exceedance at Courtice Station — May 26, 2018
The ministry has completed a review of the letter from Stantec Consulting Ltd., dated July 31, 2018,
regarding the dioxin and furan exceedance at the Courtice ambient air monitoring station.
On May 26, 2018, a dioxin and furan concentration of 0.109 pg (picogram)/m3 was recorded at the
Courtice station. The result was 9% above the Ambient Air Quality Criteria of 0.1 pg/m3. Elevated
dioxin and furan concentrations were also detected at the Rundle Road station (0.091 pg/m3) and at the
Crago Road station (0.098 pg/m3) for the same monitoring period.
The ministry completed a data validation review and toxicological assessment of the dioxin and furan
results. The dioxin and furan results are deemed to be valid based on a review of the laboratory
analysis and the recorded air flows. The toxicological review concluded no adverse effects would be
expected based on the reported concentrations.
During the monitoring period the predominant winds were blowing from the southwest and west which
places the Courtice station upwind of the Durham York Energy Centre. A potential source of the
elevated dioxin and furan concentrations could not be determined due to light winds and low
mixing/dispersion conditions.
If you have any questions please contact me at (905)427-5626, celeste.ducias aOontario.ca or Phil Dunn
at (905)427-5627, philip.dunnOontario.ca.
Yours truly,
Celeste Dugas
District Manager
York Durham District
c: L. Fortuna, Region of Durham
S. Dittman, Region of York
M. Neild, Covanta