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ATTACHNILE ;T# TO
ciza-,mogion
Planning e i e
Report
If this information is required in an alternate accessible format, please contact the Municipal
Clerk at 905-623-3379 ext. 2102.
Report To: Council
Date of Meeting: July 4, 2016
Report Number: PSD-053-16 Resolution: C_- D Or-A- »�
File Number: PLN 26.14.1 By-law Number:
Report Subject: Update on Rotosonic Borehole at Clarington Transformer Station —
Request to Alter Location
Recommendations:
1. That Report PSD-053-16 be received; and
2. That all interested parties listed in Report PSD-053-16 and any delegations be advised of
Council's decision.
Municipality of Clarington
Report PSD-053-16 Page 2
Report Overview
Council approved $25,000 funding towards a rotosonic proposal by G360 Group to
complement and add to the scientific knowledge gained from the existing deep geologic
hole drilled in late 2014. The deep geologic hole was drilled by Hydro One as required
by the road use agreement with Clarington. A major objective of the rotosonic proposal
was to continue the well monitoring by Hydro One (once they are done) and establish a
long-term monitoring site for the Oak Ridges Moraine Groundwater Program.
On June 22, 2016 a request to relocate the rotosonic borehole to alternate locations
was received. Planning and Development Committee referred the communication to
staff for a report.
1 . Background
1.1 Clarington Council and staff have been very involved with the proposed Clarington
Hydro Transformer since March of 2012. Involvement has included public
information meetings, the Environmental Study Report review, attendance at the
Community Liaison Committee meetings and numerous discussions.
1.2 To address ongoing concerns from community members and residents, Hydro
One proposed and Clarington accepted funding for peer review of the Surface and
Groundwater monitoring program. The peer review consultant, Mr. Steven Usher
of SLR Consulting (Canada) Ltd. was retained in accordance with the Purchasing
By-law and has been working with the residents, staff and Hydro One consultants
since October 2014.
1.3 Another major development was the deep monitoring well required by the road use
agreement which was drilled to bedrock (below the Thorncliffe Aquifer) in
December 2014. The hydrogeologists (CLOCA, G360 Group, Stantec, SLR)jointly
agreed that the MW5-14 site on Hydro One property was the most relevant
location for this deep geologic hole and monitoring well. The MW5-14 site already
has monitors at 4 metres, 7 metres and 40 metres; the deep borehole monitor at
112 metres and another monitor at 52 metres were a result of drilling the deep
borehole. This provides multi-level monitoring (that is, a nested cluster of
boreholes and monitors).
1.4 In the April 2, 2015 proposal (Attachment 1) from G360 Group requested that a
rotosonic borehole be located at the MW5-14 site, instrumented with a Multi Level
System (MLS). Since that time all parties have been working towards finalizing the
legal agreements and making the detail arrangements to meet the requirements
for the rotosonic drilling and MLS installation. The CLOCA Board has approved
the necessary legal agreements and Hydro One is in the final stages of executing
these agreements. The agreements provide for the rotosonic drilling and the long-
term monitoring of the deep geologic hole and MLS by CLOCA for the
Municipality of Clarington
Report PSD-053-16 Page 3
advancement of scientific knowledge of the Oak Ridge Moraine and its
hydrogeology.
1.5 On June 22, 2016, Drs. Cherry and Parker (Attachment 2) requested that alternate
locations on private property be considered for the rotosonic hole. This request
appears to have resulted from the amount of time that has passed, concern that
the Masters students involved will have to pay for an additional semester and lack
of a firm date for drilling.
1.6 Members of the Enniskillen Environmental Association (EEA) appeared at
Committee on June 27th requesting that Townline Road also be considered as a
potential location. Committee referred the communication to staff for a report at
the July 4, 2016 Council meeting.
2. Rotosonic Proposal
2.1 G360 Group from the University of Guelph and other participating hydrogeologists
proposed a multilevel monitoring well (the MLS) installed in a borehole drilled by
rotosonic methods at MW5-14. It would have state of art multi-level monitoring
equipment. It would be drilled using a different methodology than the deep
borehole providing additional scientific data. Dr. Rick Gerber of the Oak Ridges
Moraine Groundwater Program was the designated liaison between G360 and
Hydro One; as an employee of Central Lake Ontario Conservation Authority he
has also had carriage of the legal agreement which received Board approval in
May, 2016.
2.2 Hydro One has accepted the proposal for the rotosonic borehole and multilevel
installation and is working diligently to ensure that all the necessary arrangements
are in place to realize this goal. The legal agreement with Hydro One for the long
term care, maintenance, and monitoring is in the final stages. Hydro One has
retained the responsibility to decommission of the multilevel deep well when
required. The proposal is to maintain these piezometers for the long term so that
as much scientific data as possible is obtained. As noted in the proposal "Also
given that groundwater trends can take long periods of time to develop (e.g.
decades) a longer monitoring data set is preferable".
2.3 The Rotosonic hole provides an opportunity to use the rotosonic drilling
methodology to obtain undisturbed soil samples that are unaffected by drilling
fluids. Of equal importance, it allows the installation of the multi-level monitoring
device that can be used to test water pressures and water quality at many more
intervals per borehole than the conventional technology used by Hydro One and
G360 at the existing deep geologic hole.
2.4 Clarington's objectives in supporting the rotosonic where:
• Provide a detailed assessment of the aquitard in proximity to the Hydro One
site (that is, in the direction of groundwater flow) to ensure it performs as
Municipality of Clarington
Report PSD-053-16 page 4
predicted by the existing studies. This includes water levels and water
quality.
• Provide an opportunity for longer term monitoring, exceeding the 5 year
mandate of Hydro One.
• Provide an opportunity for long term research of the Newmarket Till aquitard,
which protects deeper wells in the area, through the Oak Ridges Moraine
Coalition study group.
• Provide insight to the continued safety of the private wells in the area to
unanticipated effects from the Transformer Station.
2.5 CLOCA objectives in supporting the rotosonic in addition to those outlined above
is:
• understanding the hydraulic and geochemical performance of the geologic
deposits associated with the Oak Ridges Moraine.
3. Borehole Locations
3.1 MW5-14 Location (Beside Existing Deep Hole)
The drilling of the deep hole was completed in December 2014 down into bedrock.
The work was supervised by Stantec on Hydro One property with Group 360 (Dr.
Emmanuelle Arnaud and 4 students), Dr. Rick Gerber from the Oak Ridges
Moraine Groundwater Coalition (composed of the Regions and Conservation
Authorities) and the Municipality's peer review consultant, Steve Usher of SLR
participating.
The rotosonic hole would be drilled on the Hydro One property as set out in the
proposal. The legal agreement necessary is in the final stages and has been
approved by the CLOCA Board. Because of the Hydro One construction activities
on site, the specific location adjacent to MW5-14 will not be available until
September.
The preferred location by G360, Dr. Gerber and our Peer Review consultant
(Steve Usher of SLR) is the existing MW5-14 monitoring location for various
reasons including scientific, long term access and the established working
relationship.
3.2 Townline Location(s)
The second choice would be the Townline Road right of way. Depending on the
specific location selected (it should be downgradient of the site, on the east side of
the creek), the costs should be similar to the MW5-14 site for the rotosonic drilling.
Having two holes in separate locations, MW5-14 (deep hole) and Townline
(rotosonic) would actually be of great benefit doubling the information, scientifically.
However, it should be pointed out that the three locations shown by
Municipality of Clarington
Report PSD-053-16 Page 5
Figure 1: Alternate Locations
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Private Property
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Townline Rd
coNG�S
Municipality of Clarington
Report PSD-053-16 Page 6
G360 are not downgradient of the site, contrary to the original objective (first bullet
in section 2.4 above).
Providing access to the site is a challenge. From the north along the road right-of-
way would require clearing. The Operations Department commented on June 24th
that to clear the road right-of-way a contractor would have to be used and they
would not guarantee it would be completed by July 4th. Townline Road is a
boundary road and partially owned by the City of Oshawa. Any agreement with
G360 to establish the borehole on the road right-of-way would require Oshawa's
agreement. Portions of the unopened right-of-way are under the Conservation
Authority regulation and an alteration permit would be necessary.
Two potential locations of the borehole have now been submitted by G360 with the
third southerly location shown on Figure 1 as the previously considered location.
Documentation required of G360 would be proof of WSIB clearance (for the driller
and researchers), liability insurance and safety protocols required by the Ministry
of Labour.
The drilling contractor and researchers would be working on municipal land it
would be prudent have a road use agreement in place with G360 or at a minimum
the typical requirements for any contractor on municipal land.
G360 and members of the EEA were attempting to secure access via an adjacent
property owner to avoid clearing the ROW.
3.3 Private Property Location
There are pros and cons to the private property location off of Langmaid Road. It
is not downgradient of the site and lies in a different subwatershed. Additional
drilling cost may be added because of the higher location on the hill. There could
be benefits if this second data-point were further north. To the north there is more
of a chance to actually intersect Halton Till and the Mackinaw aquifer and prove
the groundwater divide more definitively.
It is our understanding from G360 that they have used private drilling sites in the
past and have a prototype agreement (5 year) they would enter into with the
property owner. We are assuming the logistics surrounding the drill rig access
route to the site will be addressed. Hydro One have indicated permission to cross
their property has not been sought or granted.
Given that municipal funds are being allocated to this work it would be prudent of
the Municipality to ensure that long-term access is addressed through an
easement or other legal mechanism and that the participants (e.g. drilling
contractor and G360) have WSIB clearance, proof of insurance, a specific work
plan and deliverables for Clarington Council.
Municipality of Clarington
Report PSD-053-16 Page 7
For the Oak Ridges Moraine Groundwater Program to have long-term access to
the site there would have to be an agreement reached with the private property
owner. At this point in time CLOCA staff have indicated that they could not
comment or commit to any involvement until they have more details regarding the
proposal. Any legal agreement with CLOCA would require approval of the Board
and would not happen until the fall at the earliest.
3.4 For Council to alter the site location and where the funding is being allocated, a
resolution rescinding Resolution #C-136-15 (Attachment 3) would be required.
4. Comments
4.1 The request to relocate the rotosonic borehole came from the University
researchers and EEA based on the Master's students being forced to extend their
theses timeline by at least a semester. While unfortunate, it is not unusual for
Master's students to take longer than the minimum timeframe to accomplish their
work. Also there was no commitment or guarantee of timing, rather it was
understood that the rotosonic drilling had to work within the schedule of the other
construction activities on site.
4.2 Shifting the location of the rotosonic borehole away from the MW5-14 site could
have scientific benefit for some of the outstanding questions about the mackinaw
aquifer and sand lenses that may occur in the area; however, it depends on the
site selected whether these objectives will be met. To date, no details of the exact
location on Townline Road or the access arrangements for the private property
have been provided.
4.3 Hydro One has proven through the collaborative work on the deep geologic hole to
be a very good partner with a very capable project manager. Moving the rotosonic
drilling off-site undermines this partnership and jeopardizes the long-term
monitoring agreement for the deep geologic hole and remainder of the monitoring
wells on the site.
4.4 The primary objective of establishing a long-term monitoring site (beyond 2019) as
outlined in the proposal by G360 may not be realized by the shifting to an alternate
site, it creates uncertainty with regard to long-term land ownership and monitoring
activities.
4.5 It has been indicated in writing by Hydro One to G360 and partner agencies that:
"Hydro One is committed to the agreements with CLOCA and at this point in time
our best possible timeframe for the execution of the rotosonic well drilling is
September 2016. This timing is due to our construction constraints in the MW5
area on the site. Over the next couple weeks Hydro One will confirm the drilling
start date and if there can be an improvement in the timing this information will be
communicated immediately".
Municipality of Clarington
Report PSD-053-16 Page 8
5. Concurrence
Not applicable.
6. Strategic Plan Application
Not applicable.
Submitted by: ®�i� � Reviewed
David J. Crome, MCIP, RPP Franklin Wu,
Director of Planning Services Chief Administrative Officer
Staff Contact: Faye Langmaid, Manager of Special Projects, 905-623-3379 ext. 2407 or
flangmaid(a)clarington.net
Attachments:
Attachment 1 — Proposal dated April 2, 2015 from Group 360
Attachment 2 — Letter dated June 22, 2016 from Group 360
Attachment 3 — Resolution #C-136-15
The following is a list of the interested parties to be notified of Council's decision:
Brad Bowness, Hydro One
Clint Cole, Enniskillen Environmental Association
Drs. John Cherry and Beth Parker, Group 360, University of Guelph
Dr. Rick Gerber, YPDT-CAMC
Steven Usher, SLR Consulting (Canada) Ltd
DJC/FL/df
Attachment 1 to
Municipality of Clarington Report PSD-053-16
Hydrogeological Assessment of the South
Slope of the Oak Ridges Moraine, Clarington,
Ontario
(Hydro One Clarington Transformer Station - MW5-14)
Proposal
April 02, 2015
StUdV Team
University of Guelph, G360
Beth Parker, PhD -Director, G360 Centre for Applied Groundwater Research
John Cherry, PhD, P.Eng -Associate Director, G360 Centre for Applied Groundwater
Research;
-Director, University Consortium for Field-Focused
Groundwater Contamination Research
Emmanuelle Amaud, PhD
Jana Levison, PhD, EIT
Tara Harvey, Graduate Student
McMaster University
James Smith, PhD
Sidney Duggan, Graduate Student
Kelly Whelan, Graduate Student
Central Lake Ontario Coiiservation Atithority
Richard Gerber, Phl), P.Geo. (Oak Ridges Moraine Groundwater Program YPDT-CAMC)
Proposal: betoiled Hydrogeologicial Assessment, Oak Ridge-, Moraine,Clarington,Ontario
TABLE OF CONTENTS
1. INTRODUCTION ............................................................................ 32
'1.1 Background.................................. ....... ........ ...... ....... 3
1.2 Current Status_......... ..............***""''''..........*......
'11.3 Proposed Long-Term, Monitoring .......................................................................... 8
'11.4 Next Steps................................ ....... ........... ...... .................. ...... ...................I...........8
2. TASKS, METHODOLOGY & REPORTING................................. 10 -
2.1 Infrastructure: Rotosonic and modular multi-level system....... ........................ 10
2.2 Site Access.........__......... ...................... ......__................. 11
2.3 Reporting Structure.....__....................... ........_....................... .................................12
3. DELIVERABLES.......................................................................... 12
3.1 Short-Term—Years 1-5 ......................... ........._.................................. .................._12
3.2 Long-Term Monitoring (after 5 years; >2019) .........................__.......................... ..... 13
4. FINANCIAL, LEGAL & SCHEDULE....:....................................... 13
5. SUMMARY................................................................................... 14
6. REFERENCES............................................................................. 16
APPENDIX A: Rotosonic Borehole Quote.................................... 17
APPENDIX B: Reference Letters................................................... 18
LIST OF FIGURES
Figure 1: Hydro One Clariington Transformer station location with approximate project area
shown as black line (Image- Google Earth)...... ............_................ ............._... .......3
Figure 2: Project site plan(Figure from Stantec, 2014)_ .........................................................6
Figure 3: Piezometers installed at Hydro One Clarington transformer station,Site W5-14. .7
Figure 4: PrGposed interaction and informationidata sharing structure. ...... ........................ 12
Proposal- Detailed Itydrogeologieal Assessment. Oak Ridges Moraine,Clarington,Ontario
1 , INTRODUCTION
1.1 Background
Hydro One Networks Inc. is constructing a transformer station located in the Municipality of
Clarington (Figure 1). This project was approved by the Ontario Ministry of the Environment
and Climate Change(MOECC)following a Class Environmental Assessment(EA)on
January 2",2014 subject to six conditions- Two conditions relative to this proposal include
the preparation and implementation of a Surface Water and Groundwater Monitoring Plan
and the establishment of a Community Liaison Committee(CLC)to disseminate and
exchange information between Hydra One and members of the public. The CLC first met on
June 5,2014 and is expected to meet through the detailed design and construction phases
of the project- In 2014, Clarington,using funds provided by Hydro One, hired a
hydrogeological consultant,(Steven Usher, SLR Consulting Inc-)to assist with its' review,
planning and administrative duties and to provide interpretive support to Council,their
constituents and staff in the understanding of technical matters associated with pre and post
development conditions at the site. Hydro One's monitoring requirements and CLC duties
must extend through 2015 to 2019 as a condition of the EA approval. An opportunity exists
for all parties to make use of the detailed information at this site in the Oak Ridges Moraine
(ORM)planning area to better understand the flow systems associated with the Moraine.
• 1
1 t s1
Figure 1:Hydro One Clarington Transformer station location with approximate,pnq,�ect area
shown as black line(!mage:Google Earth)-
April 02,2015 Hydro One monitoring site MW5-14 Page 3 of 18
Proposal: betailed i ydrogeological Assessment, Oak Ridges Moraine,Clarington,Ontario
The proposed construction of the Hydro One Clarington Transformer Station has and
continues to experience controversy. A group of local home owners known as the
Enniskillen Environmental Association(EEA)have historically expressed and still have
concerns relating to the project and the safety of the local water resources. Researchers
from the University of Guelph(UofG;Beth Parker,Jana Levison and John Cherry)have
provided comments(Cherry et al.,2613)on behalf of the EEA during and subsequent to the
Environmental Assessment process. The Regional Municipality of Durham and the Central
Lake Ontario Conservation Authority have also provided review and comment throughout
the Environmental Assessment process.
The YPDT-CAMC groundwater initiative commenced in 2001 to provide assistance to four
Municipalities and their nine Conservation Authority partners with tools and products to
better understand and manage their groundwater resources.Among other things,the tear
of hydrogeological experts developed a shared populated hydrological database,a
geological model,and several numerical models_This work has served the agencies in their
business needs and supported major aquifer monitoring decisions.Dr. Rick Gerber is a
member of the YPDT-CAMC team_
Many gaps exist in the technical coverage of the ORM area and it is important to
progressively close these gaps to strengthen the overall understanding. Over the last
decade,UofG researchers and the YPDT-CAMC team have had informal discussions
regarding groundwater monitoring infrastructure and possible future collaboration to begin
filling these gaps, largely facilitated through their shared interest in aquitard hydrogeokagy.
Aquitards are lower permeability deposits such as clay or dense till (deposited by glaciers)
soil units but also extending to rock units(e.g.shale, limestone). While monitoring exists for
the majority of major aquifers in the Province, there is limited monitoring of these lower
permeability aquitards which are considered contaminant barriers to many of the municipally
Alized confined aquifer systems. Understanding the efficacy of these barriers is key to
adequately assessing vulnerability of deeper municipal drinking water supplies.
Collaborative efforts discussed included upgrading the quality of groundwater monitoring
infrastructure for regional investigations associated with the Oak Ridges Moraine_
Over the last year,Dr.John Cherry has had discussions with the EEA and Municipality of
Clarington regarding the need for enhanced site characterization and groundwater
monitoring relative to the transformer station and also related to the protection and
understanding of the Oak Ridges Moraine in general_ Following the EA approval of the
Hydro One project by the MOECC(January 2614), UofG approached the YDPT-CAMC team
(Rick Gerber)to possibly collaborate on establishing a high-quaiity monitoring site in the
Clarington area_ Given the high oast of installing such infrastructure as well as the local
concerns, it was decided that if the opportunity to collect high-quality hydrogeological
information(long-term)proved to be feasible then this possibility should be explored. Such
information is deemed to be useful to both local undertakings and also to the regional
analysis of the Oak Ridges Moraine being conducted by the Oak Ridges Moraine
Groundwater Program.
On October 2, 2014 the Municipality of Clarington provided road allowance access to Hydro
One to construct a road into their Clarington Transformer site. Part of the road easement
agreement included a condition that Hydro One amend the site g-roundwater monitoring
program to include deep drilling to collect geologic information along with the installation of a
deep monitoring well,and that Drs_Rick Gerber and John Cherry be invited to participate.
The information generated is also to be shared with the(Municipality of Clarington,CLOCA,
the EEA and the CLC_ This deep drilling program was conducted in December 2014 with
further details included in the next section(1.2 Current Status)_
April 02,2015 Hydro -fine monitoring site MW5-14 Page 4 of 18
Proposal. Detailed Hydrogeological Assessment. Oak Ridges Moraine,Clarington,Ontario
This proposal relates to leveraging the effort and cost that has already been expended by
Hydro One for water resource investigations at the site. The aim of the proposed work is to
enhance and maintain long-term(following Hydro One monitorinq EA obligations)the
existing groundwater monitoring infrastructure that has been installed at site MW"J5-14_ The
proposal outlines the components deemed necessary to turn this location into a high-quality,
rm
long-tegroundwater monitoring location_ The two main components relate to:
• Drilling a cored borehole by the Rotosonic method for the purposes of the installation
of a mutli-level groundwater monitoring device;and
• Obtaining legal access to this location (MVW5-14)in perpetuity_
1.2 Current Status
Construction of the Clarington Transformer Station is awaiting approval of a Permit To Take
Water(PTTIA?)application submitted to the MOECC.The existing monitoring network,
including other site investigation locations, is shown on Figure 2. All cin-site investigation
boreholes terminated at depths less than 16 m beneath the ground surface(mbgs)with the
exception of site MW115-14 (Figure 3)where a borehole was drilled to 40 mbgs. This location
already had 2 piezometers installed by Hydro One as part of their site Monitoring Plan. This
is the site that was chosen for the deep groundwater exploration program(conducted during
December 2014)as directed in the road easement agreement.
The December 2014 drilling program involved drilling and coring a borehole to and into the
shale bedrock. A continuous core of the sediment column ,was obtained from ground
surface to approximately 2 m into the bedrock for a total depth of 129.5 m. Borehole gamma
logging was conducted at this location to characterize the soils to a depth of approximately
52 m_ The field investigative team included individuals from Stantec Consulting (Brant Gill,
Natalie Spina), 'SLR Consulting Inc. (Steve Usher),University of Guelph (Emmanuelle
Arnaud,Tara Harvey)McMaster University(Sydney Duggan, Kelly Whelan),and the Oak
Ridges Moraine Groundwater Program (Rick Gertner). Natalie Spina,Emmanuelle Arnaud,
Tara Harvey,Sydney Duggan and Kelly Whelan were on site daily during drilling to log and
sample the core and provide drill crews oversight_ Hydro One on-site staff,under the
direction of Jeff Cridland, provided assistance and logistical support_
A summary of the current groundwater monitors installed at MW5-14 is included in Figure 3.
Five 2-inch diameter piezometers have been installed labelled here from shallowest to
deepest as A to E. Hydro One has incorporated four of the five piezometers(A to D)into
their site monitoring program(2015-2019)that will include measuring grater levels and
groundwater quality analyses. The deep piezometer(E)is not part of the currently proposed
Hydro One monitoring program. It is our recommendation that these five piezometers be
monitored in conjunction with each rather to ensure a consistent and useful dataset. This
situation needs to be rectified as the monitor should not be left idle for the next five Mears_
Ideally the deep piezometer(E)should be incorporated into the Hydro One monitoring
program or another party identified to monitor this piezometer_ Given the positive interactive
situation bebnreen all parties that was established for the December 2014 field investigations,
we are hopeful that a suitable arrangement can be established whereby all five piezometers
at MW5-'14 can be cooperatively monitored.
April 02,2015 Hydro One monitoring site iMW5-14 Rage 5 of 18
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Project Site Plan
Figure 2 Project site plan(Figure from Stantee,2014)_
Proposal- Detailed Hydrogeological Assessment, Oak Ridges Moraine,Clarington,Ontario
HydrGOne Claringto'1; MW5-14
Geology 2"PVC piezometers Formation
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Figure 3.Paezomet+ers instWlled at Hydro One iClanngton transformerstatran Site ArtW5-14-
April 02,2015 Hydra One monitoring site MW5-14 Page 7 of 18
Proposal: Detailed Hydrogeo logical Assessment,Oak Ridges Moraine,Clarington.Ontario
1.3 Proposed Long-Terni Monitoring
The Oak Ridges Moraine Groundwater Program has been opportunistic in establishing
higher-quality groundwater monitoring locations in various hydrogeologic settings within their
study area,which encompasses much of south-central Ontario. Most of these locations are
situated within the western half of the Oak Ridges Moraine(ORM). The Program's
monitoring locations are seen as complimentary to groundwater monitoring being conducted
by municipalities(associated with municipal Supply Well fields)and ambient groundwater
conditions monitored by the Provincial Groundwater Monitoring Network (PGMN;conducted
by the MOECC.and Conservation Authorities)- As mentioned previously.,this proposal is all
attempt to leverage the effort and cost that has already been expended through Hydro One
investigations at the site,and establish a high-quality, long-term groundwater monitoring
location at MW5-14.
A high quality, long-term groundwater monitoring site in the proposed geologic setting
generally includes the following, some of which has already been accomplished:
a) Continuous core of the sediments above bedrock and confirmation of the bedrock rock
type-This is usually cored using mud rotary techniques because PO-sized core
generally provides the best quality soil and rock samples and the highest likelihood of
drilling to a greater depth;
b) Installations of monitoring wells and multi-level sampling ports at various depths within
the geologic profile to establish vertical groundwater flow interaction between the
various soil and rock units encountered. This interaction is analysed utilizing water
levels, chemistry and physical testing(e.g. pumping tests). Ideally, at least one of the
monitoring wells should be 2.5"diameter or greater,and installed at or near the bottom
of the deepest borehole, to allow for the largest number of geophysical tools to be
sent down the borehole for geophysical togging;and
c) Access(physical and legal)to the monitoring site in perpetuity to collect
hydrogeological information.
At monitoring site MW5-14, Hydro One has already facilitated and completed the most costly
item outlined in a)and part of b)above. For a relatively small further outlay of effort(and
funds)it is anticipated that a high-quality monitoring facility can be established at MW5-14
that will assist the understanding of the regional groundwater flow system. Information
generated from such a facility is also expected to benefit more site specific investigations
conducted in similar hydrogeologic settings. The proposed further outlay to transform site
MW5-14 (situated on Hydro One property)is described below with any new funding coming
from agencies other than Hydro One.
1.4 Next Steps
The above work has provided a basic framework for understanding the geologic profile at
this site. Five ground) hater monitors provide spot measurements of conditions at those
intervals. The drilling however identified both thick continuous units of similar properties,
and also considerable lengths of variable conditions. For example the Newmarket Till below
MW5-,14-D (Figure 3)is a mixture of diamict, and fine-grained sand lenses, and silt lenses
which are characterized by contrasting geologic and hydraulic properties.
April 02,2015 1 iydro one monitoring site M W 5-14 Page 8 of 18
Proposal- Detailed Ifydrogeological Assessment, took Ridges Moraine,Clarington,Ontario
The next step, proposed here, is to complete the existing infrastructure with detailed
instrumentation capable of long-term groundwater monitoring and designed to examine
these hydrogeological nuances. This is detailed in Section 2, below.
Specifically,the objectives of the proposed long-term groundwater monitoring program are
to:
• Fill existing knowledge and data gaps;
• Comparison of different field methods including groundwater monitoring construction
and exploration methods(e.g. conventional mud rotary coring versus Rotosonic
coring);
• Understand the continuity and integrity of the till deposits(aquitards)to be applied
both locally and regionally;
+ These aquitards are the protective layers for aquifers utilized by both private and
municipal well supplies;
• Understand the regional continuity of aquifers for potential future water supply; and
• Validation of the current geological and hydrogeological understanding being applied
to municipal groundwater infrastructure on a regional basis.
April 02,2015 Hydro one monitoring:site MW5-14 Page 9 of 18
Proposal- betoiled Hydrogeological Assessment, Oo.k Ridges Moraine,Clarington, Ontario
2. TASKS, METHODOLOGY & REPORTING
The proposed tasks for future work at site MW15-14 to transform and complete the existing
infrastructure to a high-quality, long-term groundwater monitoring facility includes:
• Drilling a Rotosonic borehole with associated installation of multiple groundwater
sampling ports within that borehole(Infrastructure); and
• Provision of access by Hydro One to U of GuelphNPDT-CAMC staff in perpetuity(Site
Access).
2.1 Infrastructure: Rotosonic and modular multi-level system
Complex hydrogedlogic settings often exhibit large changes in hydraulic properties and
three-dimensional groundwater flow patterns over short distances. The problem can be
further exacerbated within aquitards (e.g. glacial till)by the presence of fractures andfor
sand seams and the fact that conventional piezometers can,take months to years to provide
useful inforniation, Conventional piezometers also contain casing joints which can leak,
further complicating results. The Lower Newmarket till is situated beneath site MWJ5-14 and
is found throughout much of the ORM study area. T'his unit controls the flow of groundwater
between the shallow groundwater flow system and the deep groundwater flow system,
thereby acting as the protective layer for the deep aquifers used for private and municipal
water supply. The Lower Newmarket till and other geologic units encountered on site are
characterized as exhibiting subtle yet important changes in hydraulic properties over short
distances. This type of setting requires more detailed monitoring to fully understand the
details of groundwater flow paths.
Theproposal is for a Rotosonic borehole to be drilled at MW5-14. This drilling method
vibrates a drill casing to depth while collecting a continuous core sample. The key
characteristic of this drilling method is that a drill fluid is not needed for borehole control or as
a drill bit coolant. This minimizes the possibility of drill fluid subsurface contamination which
can take months to years to remove or naturally dissipate. A modular multi-level system
adapted for high resolution monitoring of, hydraulic head and ground water quality will be
installed within the borehole. The system accommodates up to '15 monitoring intervals within
one hole and can be used to monitor overburden andlof bedrock to depths of interest at
MW5-14. Detailed vertical monitoring provides important information on hydraulic head and
groundwater quality distributions that are missed with fewer monitoring intervals- The
monitoring system offers unique advantages where detailed monitoring in heterogeneous
settings is needed to assess and understand groundwater flow and possible contaminant
migration. Even with the availability of core logs prior to installation of multi-level systems,
most of the specific depths at which the highest head differentials occur often cannot be
anticipated from detailed visual inspection of the core, indicating the essential and unique
role of the high-resolution head monitoring (Parker et aL,2006).
Advantages of the proposed Rotosonic drilling method and installation of multi-lbvel
monitoring system include:
• Unified, holistic Understanding of the hydrologic system including both aquitards (e.g.
till, silt)and aquifers(e.g.sand). The existing conventional monitors are screened in
aquifers with the exception of monitor MW5-1 4C-1
April 02,2015 Hydra One monitoring site MW5-14 Page 10 of 18
Proposal: Detailed I-fydrogeo logical Assessment, Oak Midges Moraine,Clarington, Ontario
• Comprehensive understanding of groundwater hydraulic gradients resulting in an
improved appreciation of vertical flow though the stratigraphic profile and of the
integrity of the fill as a protective barrier for deeper aquifer systems;
• Improved understanding of the hydraulic properties of the encountered fill units.which
will be useful to the ORM Groundwater Program.These data are not achievable from
conventional borehole monitoring;
• Multi-level sample ports are smaller volume than conventional piezometer installations
thereby allowing for quicker response times within aquitards; and
• The Rotosonic drilling method is reported to be fast with uncontaminated samples(no
drill mud)and no downhole sample contamination with the result being that the
integrity of soil and groundwater samples is greatly increased.
One of the research objectives of selecting this location (MW5-,14)is that different drilling
methods (PQ mud rotary versus Rotosonic)can be compared including costs,timing of
completion,quality of samples obtained and quality of groundwater monitoring installations
achieved. Another ancillary benefit is,the training of students in advanced hydrogeologic
techniques.
A drilling contractor will drill the Rotosonic borehole. The Multi-level monitoring system will
be installed in the borehole by the drilling contractor and UoG technicians supervised by
Beth Parker and John Cherry, in collaboration with Rick Gerber. It is understood that the
drilling contract would have to be administered by HydroOne because of Ministry of Labour
and 3rd party liability issues.The logging of the Rotosonic core would be done by UoG and
McMaster University personnel who logged the core from the borehole to bedrock that was
drilled in December 2014.
All on—site work will follow the safety and logistical procedures that were established during
the December 20*14 drilling program, led by Hydro One's Jeff Cridland- All potential site
visitors from the University of Guelph, McMaster University and CLOCA(Rick Gerber) are
covered under Workers Compensation.
2.2 Site Access
The groundwater monitoring infrastructure at 1;AV%15-14 consists of 5 conventional 2 inch
diameter PVC piezometers. Hydro One plans on monitoring only 4 of these fA-D) as part of
their EA required monitoring program for the period 2015-20,19. It is assumed that Hydro
One plans on decommissioning all!5 piezometers when their monitoring obligations have
been satisfied.
Given that MW5-'14 consists of 5 groundwater monitors, all 5 should be actively monitored
iinClUding MVV5-,14E. We(YPDT-CAMC, UofG)require forma[permission to access this site
through 2019 to ensure that all 5 monitors are actively monitored if Hydro One is unwilling to
do so.
We request site access permission to install the groundwater monitoring infrastructure
detailed in Section:2.1. The installation of this further groundwater monitoring infrastructure
will upgrade this site to a high-quality groundwater monitoring facility to be utilized for both
regional and local hydrogeologic investigations in the long term.
Given the outlay of funds to install the Current monitoring infrastructure and the proposed
outlay of funds to upgrade the facility, it would be a lost opportunity to decommission this site
after Hydro One is finished their monitoring requirements in 2019. We request permission to
April 02,2015 Hydro one monitoring site MW5-14 Page 11 of 18
Proposal= Detailed 1tydrogeological Assessment, Oak Ridges Moraine,Clarington,Ontario
access site MW5-'14 in perpetuity to continue collecting valuable groundwater information as
outlined in Section 1.4 above. A legal entity is needed should any of this groundwater
monitoring infrastructure cease to be used at some point in the future and to provide for
maintenance of the piezometers in the long-term. The legal entity is responsible for
decommissioning should this prove to be necessary. Central Lake Ontario Conservation
Authority has agreed to be the legal entityy for this proposed long-terra, high-quality
groundwater monitoring facility at 1ti4 ^B-14. Further details are provided below.
2.3 Reporting Structure
The proposed reporting structure is summarized in Figure 4_ It is anticipated that a
streamlined interaction and reporting protocol will be optirnal given the different entities that
are involved including the proposal team, local government and Hydro One.
Proposed Interaction Structure
Lang-term groundwater monitoring site MW5-14
Hydro One(Owner)
.lariragtcnTrarr$fcrm?rStat cn -
Site MW5-14
Designared Li&i
Rick Gerber
e
Central LakeOntaric Ccnsei-vaticn
Authority(CLOD;Legal Entity)
Munir'pafit;ofClaringtm
> UniverstyGfGueipihG360 Enn sk: leriEnvironrnerita Assn
• B.Parker,-J-Cherry,E.Arnaud
M100aster Unpre"L
J a m es Srm ith
Rick Gertner Faye Langmaid
Figure 4--PYoposed ir(teractran and r:farmat onldata shanng structure.
3. DELIVERABLES
3.1 Short-Term—years 1-5
1-hyrdro One is conducting an on-site monitoring program for the approximate period 20:15-
20,19 to satisfy MOECC requirements. It is preferred that the Hydro C1ne monitoring program
April 02,2015 Hydra One monitoring site A W5-14 Rage 12 of 18
Proposal: betailed Hydrogeological Assessment, Oak Ridges Moraine,Clarington, ontorio
includes all 5 piezometers at MW5-14. Until this issue is resolved it is unclear what, if
anything, other parties will be asking to complete. It would be prudent for all 5 piezometers
to be monitored for the period 2015-2019. We look forward to further discussion towards
resolving this issue.
3.2 Long-Terra Monitoring (after 5 years; >2019)
The long-term monitoring goals at MW6-14 will be to continue the monitoring program
conducted by Hydro One for the period 2015-2019. It is assumed that the ultimate
groundwater monitoring infrastructure at MW5-14 will include the current 5 groundwater
monitors plus multi-level monitoring probes installed within a Rotosonic borehole. It is
anticipated that transducers with dataloggers will be installed in select piezometers collecting
data at regular intervals (hourly),and that manual measurements(—monthly)will also be
conducted. Groundwater sampling and analysis will be conducted(—annually)along with
physical aquifer/aquitard testing. These data will be shared with the various interested
stakeholders regarding water resources associated with the Oak Ridges Moraine.
Information will be disseminated through publication in University theses,scientific journals,
public lectures and talks at conferences,as well as through the YPDT-CAMC web site
(www.oak6daesvwvater_ca -
4. FINANCIAL, LEGAL & SCHEDULE
The following lays the groundwork for the suggested logistics and details. Letters of
Reference outlining pertinent details are included in Appendix B. Subsequent discussions
with all parties, particularly Hydro One, will refine these details.
1) Legal Entity- CLOCA has agreed to be legally responsible for the groundwater
monitoring infrastructure at site MW5-1 4 subsequent to 20,19 for the boreholes that
Hydro One must monitor as a condition of the EA. They will do this as well for the
proposed detailed multi-level monitoring installation in the Rotosonic borehole
immediately upon completion. This also means the arrangement and completion of
the decommissioning of all boreholes at some point in the future(>2019)should this
become necessary;
a. It is requested that Hydro One transfer decommissioning funds to CLOCA for
the existing borehole cluster(5 piezometers A through E)at site MW5-14.
The anticipated cost is expected to be on the order of$10,000 assuming
$2000.00 per piezometer;
b. CLOCA will also be responsible for the decommissioning of the additional
Rotosonic borehole at some time in the future(this borehole is not under the
EA approval conditions and the construction costs are not being funded by
Hydro One);
c. A Memorandum of Understanding (MOU)will be prepared between CLOCA
and Hydro One.
2) RotoSonic Drilling—Rotosonic drilling,,and multi-level piezometer installation will be
supervised by the University of Guelph. Funding sources and logistics for this
includes:
a. Municipality of Clarington$25,000-To be transferred to Hydro One ter pay for
the preferred Rotosonic driller. A quote from Choice Sonic Drilling is included
as Appendix A;
April 02,2015 Hydro one monitoring site MW5-14 Page 13 of 18
Proposal: betailed Hydrogeological Assessment, Oak kidges Moraine,Clorington, Ontario
b. EEA$5,000 to John Cherry-This will be used by UofG to purchase a
Waterloo System multi-level installation to be installed within the Rotosonic
borehole;
c. John Cherry NSERC-Should Rotosonic drilling (2a) cost more than$25,000
then an invoice will be sent by Hydro One to John Cherry to cover the
remainder;
d. John Cherry NSERC-Should the purchase of multi-level piezometers cost
more than$5,000 then John Cherry will pay for the ren-cinder;
e. This task can be completed at any time subject to driller availability. Time is
not expected to lower drilling costs so ideally the sooner the better. Also
given that groundwater trends can take long periods of time to develop (e.g.
decades), a longer monitoring data set is preferable,- and
f. University of Guelph and McMaster University researchers will make regular
Visits to site to measure water levels, or take groundwater samples,or
conduct hydrogeological testing!(under the Supervision of YPDT-CAMC staff)-
3) Long-term Monitoring (>2019)-The key components of this task will be site
access from Hydro One which will be outlined in the MOU with the legal entity
(CLOCA)and the existence of a decommissioning fund as outlined in 1 above. Other
items include:
a. YPDT-CAMC staff(employees of CLOCA)will make regular(-Monthly)visits
to the site to measure water levels, or take groundwater samples, or conduct
hydrogeological testing subject to Hydro One schedules and health and
safety requirements;
b. University of Guelph and McMaster University researchers will make regular
Visits to site to measure water levels, or take groundwater samples,or
conduct hydrogeological testing(under the supervision of YPDT-CAMC staff);
c. Annual maintenance costs are estimated at$1000/year. CLOCA will prepare
a capital budget submission for FY 2016 and ongoing to cover these costs.
Alternatively,the Oak Ridges Moraine Groundwater Program(YPDT-CAMC)
program could cover these costs should the partners agree;and
d. Laboratory analysis (e.g. chemistry, isotopes)will,be conducted
opportunistically as funding is available.
5. SUMMARY
The following provides a summary of the relative events and requests contained within this
proposal for Hydro One's consideration:
1) Hydro One has established a monitoring network for the Clarington Transformer
station location in response to MOECC project approval requirements. It is
anticipated that this monitoring program will extend through the period 2015 to 20*19;
2) Hydro One conducted deep groundwater exploration tasks at site tAW5-14 during
December 2014 in response to conditions attached to their road easement
agreement with the Municipality of Clarington. This exploration was conducted in
concert with CLOCA, YPDT-CAMIC, University of Guelph, McMaster University,
Municipality of Clarington, and CLC(SLR Consulting)representatives;
3) Monitoring site MW5-14 now contains 5 groundwater monitors (piezometers)
installed at various depths. It is unclear if Hydro One will monitor all 5 of these
monitors for their monitoring period 2015 to 2019;
April 02,2015 Hydro One monitoring site MW5-14 Page 14 of 18
Proposal: betailed Hydrogeological Assessment, Oak Pidge!; Moraine,Clarington,Ontario
4) Given Hydro One's current groundwater related site expenditures at MWS-14 if would
seem prudent to monitor all 5 piezometers at MW5-14 for the 2015-2019 monitoring
period;
5) Permission is requested to augment monitoring capabilities at site M4W5-,14 by drilling
a Rotosonic borehole and installing the associated multi-level groundwater
monitoring system;
6) We hope to work out a mutually agreeable solution to enable monitoring to occur at
all 5 monitors at MW5-1 4 plus the installed multi-level monitoring system through the
period 2015 to 2019;
7) From a technical perspective (and to better capitalize on the Hydro One expenditure
to date)it would be preferred that Hydro One permit the continuation of groundwater
monitoring at site MW5-14 post-2019. The altemative would be to decommission this
location in 20,19 when Hydro One has fulfilled their MOECC monitoring requirements.
No additional costs would incur to Hydro One as a result of longer term monitoring;
8) Post-2019 we request permission to access the groundwater monitoring facilities at
site MW5-14 in perpetuity with CLOCA acting as the legal entity; and finally
9) No direct cost or funding is requested from Hydro One except for transfer of funds
that would have been spent decommissioning the five MW5-14 piezometers A-E to
CLOCA. These funds will be held by CLOCA for decommissioning at a [Liter date
should this be deemed necessary at some point in the future(>2019).
We thank you for your consideration of this proposal and we look forward to a successful
collaborafion in establishing a high-quality, long-term groundwater monitoring facility at site
MW5-14. The water resource information generated at this site is anticipated to benefit both
regional and local investigAons across south-central Ontario.
Sincerely,
Dr. Beth Parker Dr. John Cherry
University of Guelph, G360 Group University of Guelph, G360 Group
Dr. James Smith
McMaster University
Dr. Richard Gerber
Oak Ridges Moraine Groundwater Program(YPDT-CAMC)
416-737-1550
April 02,20915 Hydro one monitoring site MW 5-14 Page 15 of 18
Proposal: Detailed Hydrogeological Assessment,Oak Ridges Moraine,Clarington, Ontorio
6. REFERENCES
Cherry,J.A., B. Parker and J. Levison.2013. Independent Review, Hydrogeological
Concerns for the Clarington Transformer Station Class Environmental Assessment Draft
Environmental Study Report. Prepared for the Enniskillen Environmental Association.
July 31-
Hydro,One.2012. Clarington transformer station class environmental assessment draft
environmental study report. Report N U rnber:590-CLEA-12-11- Environmental Services
and Approvals, Hydro One Networks Inc. Toronto, Ontario.
Parker, B.L., J.A. Cherry and B.J.Swanson. A multi-level system for high-resolution
monitoring in rotasonic boreholes. Ground Water Monitoring and Remediation, 26(4), 57-
73-
Stantec Consulting Ltd. 2013. Hydrogeologic&hydrologic assessment report Clarington
transforrner station, 1609-60745. Prepared for Hydro One Networks Inc., Stantec
Consulting Ltd., Kitchener, Ontario, 102 pp.
Stantec Consulting Ltd. 2014. Pre-Station Construction Groundwater and Surface Water
Baseline Conditions Report, Hydro One—Clarington Transformer Station. November 18,
82pp.
April 02,2015 Hydra One monitoring site MW5-14 Page 16 of 18
Appendix A: Potosonic Borehole Quote
010E
THE ONLY CHOICL- IN SONIC DRILLING Project Proposal
Choice Sonic Drilling Ltd. Quote No: 171
72 Main st,Mount Albert Customer Name: John Cheery
Ont,LOG 1MO Client Contact:
Tel:647-527-3745 Project No Concession 7&8
choicesonicdrilling.coni Contract Name:
Sao pe of work
Wiling one BH's to apprommately 200 teet,it All be turn ad into a multi level piezometer upon BH's tinal depth. All BH's will bei led using
Sonic technology and will produce a continuous core sample of 4.5"to depth of hole.All wells will be to MOE specifications,Materials would be
supplied by client.
Start date from: 101-Sep-14 Finish date to: 01-Oct-14
DESCRIPTION UOM QMNY" RATE EXTENDED RATE
Mobf0emob to site Lump Sum 1.00 2,500.00 2,500.00
Perdiem for crew Each 4.00 285.00 1,140.00
Hourly rate for Sonic Rig,Box truck Hours 40.00 295.00 11,8rJO.00
Toolino Charcie 4"x 6"Drilling Metre 60.001 45.00 2,700.00
8"override tooling charge (if needed) Metre 0.00 55.00 0.00
Water delivery to site with rental of water cubes Days 0.00 295.00 0.00
Decommission of 61-1"s(grouted to surface) Each 0.00 20-00 UO
,Flush well protector or stick up well protectors Each 0.00, 125-001 0.00
Total 1 18,140.00
dourly drill rate includes loading,moving,drilling,installing,testing,development and clean tip.
All uffliffes will be cleared by client prior to drill's arrival
Discreet sampling materials,testing equipment and all water samples will be the responsibility of the client.
Water used for drilling can either be supplied on site or can delivered for an extra cost
Drill cuttings and waste water caused by drill will be handled by client_
Page1 of 1
April 02,2015 Hydro One monitoring site MW5-14 Page 17 of 18
Appendix B: Reference letters
W-1 TORO MO
Oak Moraine Groundwater Program(YPDT-CAMC)
March 30,2015
Faye Langmaid
Manager of Special Projects, Municipality of Ciarington
Planning Services Department
40 Temperance Street
Bowmanville, ON LI C 3AG
905-623-3379,ext.2407
Re: Hydrogeological Assessment of the South Slope of the Oak Ridges Moraine,
Clarington, Ontario–proposal to Hydro One,
Dear Ms. Langmaid;
The Oak Ridges Moraine Groundwater Program was established in 2001 by four
municipalities(Peel,York and Durham Regions, City of Toronto)and nine conservation
authority partners situated within south-central Ontario across the extent of the Oak Ridges
Moraine. Program staff also work closely with the Ontario Geological Survey,the Ontario
Ministry of the Environment,the Ontario Ministry of Natural Resources, and the Geological
Survey of Canada. Projects with researchers at Canadian Universities are also on-going
(e.g. University of Waterloo, Trent University). The goal of this collaborative effort is to
establish science-based, responsible water resource management. The premise of the
Program is that sound technical understanding leads to more effective water resource
planning and policy. This is seen as vital in regards to the Oak Ridges Moraine given its
importance in influencing water supply and ecosystem health within much of south-central
Ontario.
One of the key components of any hydrogeologic analysis is the availability of long-term, high
quality monitoring information. While much water related information exists across the Oak
Ridges Moraine,the quality is quite variable. The presence of state-of-the-art, groundwater
monitoring infrastructure is largely non-existent. The Hydro One Clarington transformer
station site contains a large thickness of glacial fill deposits that protect both shallow and
deep aquifer systems. The proposed monitoring will provide valuable information regarding
groundwater flow through these fill deposits that can be applied across much of south-central
Ontario. The locations,of higher quality monitoring locations are shown on the attached
Figure 1. Higher quality sites include the presence of a carefully logged soil core extending
from ground surface to bedrock and the installation of 3 or more monitoring wells at various,
depths. To date,the higher quality monitoring stations shown have been largely installed
over narrow geologic structures(e.g.tunnel channels)where the till deposits have been
partially or completely eroded.
The proposal to Hydro One referenced above seeks to install high quality groundwater
monitoring infrastructure at a location on the Moraine(Clarington), Monitoring at the site
would generate research-level hydrogeological information and knowledge ultimately leading
to a better understanding of aquifer(water supply)vulnerability. This site will fill a large gap
101 Excharmp Avenue, V"han, ON, Cowdo, L4K 5R6
lei ter..
Hydrogeologital Assessment of the South Slope of the Oak Ridges Moraine,
Clorington, Ontario (Hydro One Transformer Station MWS-14) - proposal
relating to the paucity of information relating to how groundwater flows through till deposits
associated with the Moraine. We fully Support the proposed project as its intent is viewed as
significantly enhancing Our Program objectives.
We have developed significant hydrogeologic expertise related to the flow systems
associated vMh the Oak Ridges Moraine. We expect that we will work closely with the study
team to convey our knowledge, particularly in placing the local findings into the regional
context that we have developed. Other in-kind contributions are possible, for example one
opportunity may include collecting samples from the monitoring infrastructure and having
them analysed as part of our on-going,isotope study being conducted with researchers from
the University of Waterloo.
We look forward to developing a successful collaboration with Hydro One as outlined in the
proposal. We also look forward to working with world-class researchers in enhancing our
understanding of the hydrogeology of the Oak Ridges Moraine. Finally,we fully welcome the
long-needed establishment of state-of-the-art-monitoring facilities along the Oak Ridges
Moraine.
Sincerely,
A
Steve Holysh, P.Geo.
Hydrogeologist and Co-Manager
Oak Ridges Moraine Hydrogeology Program (YPDT-CAMC)
s,holysh@trc:a.ori.ca: 416-66*1-6600 x5588
Richard Gerber, Ph.D., P.Geo.
Hydrogeologist and Co-Manager
Oak Ridges Moraine Hydrogeology Program (YPDT-CAMC)
rgerber@trca.on.ca;416-661-6600 x5589
March 30, 2015 ORM Groundwater Program (YPUT-CAMC) Page 2 of 3
Hydrogeological � f the South Slope of the Oak Ridges Moraine,
Clarington, Ontario (Hydrorr Stab - sal
�sa
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s
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15xiw tr.,�5y:g 111:::�57n1r}
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Figure 1: Higher quality monitoring locations in the Oak Ridges Moraine study area. Higher
quality locations include the presence of a carefully logged core to bedrock along with the
installation of 3 or more tpr nitoti ng wells at variable depths.
March 30, 2015 ORM Groundwater Program POT- f
Attachment 2 to
Municipality of Clarington Report PSD-053-16
June 22, 2016
Attention: Mr. Mayor and Council Members
Municipality of Clarington
Council Services
40 Temperance Street
Bowmanville, ON L1 C 3A6
Attention: Faye Langmaid
RE: Proposed modifications to approved Rotosonic hole location and $25,000 funding
The University of Guelph (UofG) and McMaster University are appreciative of Clarington
Council's $25,000 commitment and the work that has occurred by all parties involved towards
the advancement of a Rotosonic hole and installation of a Multi-level System (MLS). The drilling
has not been able to proceed on a schedule that will allow the graduate students who are
depending on data from the hole and from the multilevel system to complete their Masters
theses in the time allotted to them by the University. The July 5 start date drilling schedule
meets these needs. Although there are still ongoing attempts to get drilling approved for the
Hydro One land at the deep core hole site, the prospects for full approval by July 5 are very
poor. However, G360 is proposing an alternate drill site on private property appropriately
located for the purposes of the scientific study and consistent with the Clarington-approved
funding in order to expedite the completion of the MLS. This alternative site arrangement will
enable the schedules arranged with the drilling contractor to be met and it will ensure that the
team of scientific collaborations can proceed with no deficiencies so that the financial
investment by Clarington can give the best possible value. An agreement is being established
between G360 and a landowner for access to the MLS for a period of five years with G360
owning the costs of well decommissioning when this is needed. We hope that CLOCA will see
this monitoring as valuable to them and that CLOCA will want to take the MLS on as part of their
long term monitoring network. This plan will allow G360 to convey data to interested parties in
an accelerated manner and create a reasonable and effective timeline for the graduate students
working on this project. It will also allow Clarington to have full access to the hole/MLS in their
pursuit to inform and protect their citizens. We will welcome Dr. Rick Gerber to be a collaborator
on the drilling of the hole and the multilevel system installation,just as would be the case if the
hole were to be drilled on Hydro One property as originally planned. We will also welcome the
participation of Mr. Steve Usher during the drilling and MLS installation. With this slight shift in
collaborative efforts because of the new location of the hole, and with a focus on this new
location from G360, McMaster University, the Municipality of Clarington, and the EEA, it is
expected that the advancement of the Rotosonic hole and installation of the MLS will occur in
July of 2016. Drilling of the Rotosonic hole and installation the MLS on private land, with
ownership by G360 for the near future will best facilitate the scientific goals of this project.
The drilling at the rotosonic site will be done to install a multilevel monitoring system with many
monitor intervals (16 ports). Each monitoring internal is like an individual monitoring well. So in
essence, this location will have sixteen wells, each at a different depth. The particular MLS, to
be installed in a rotosonic hole to a maximum depth of 300 feet, is the new G360 MLS that we
believe will in the future have great value at this site and at many other sites on the Moraine and
far beyond.
This MLS project has substantial cost associated with it, including the student research
stipends, travel to and from the site, purchase of the MLS and the sand and bentonite for
installation, the drilling contractor cost, purchase of pressure transducers and recoding units for
monitoring in the MLS, water analysis cost for samples from the 16 ports on the MLS
(inorganics, isotopes, dissolved organic carbon and more). The total cost of this project through
to completion of the two Masters theses exceeds 150K.
To enable this project to proceed we have rounded up funds from a few different sources
including:
- G360
- McMaster
- Geological Survey of Canada
-the EEA
The Geological Survey of Canada (GSC) is a collaborator on the project because the MLS is an
innovative endeavour and because the site location is of particular interest to the GSC
geologists. GSC geologists have much experience and expertise concerning the Moraine.
The 25K that has been planned to come from Clarington is a key component of the overall
budget: we will send to you soon the details of the MLS design so that Rick Gerber and Steve
Usher can have input before the drilling begins. All of the components of the MLS have been
ordered but there is flexibility in what is to be put in the ground by the fact of the modular design
of the MLS and that we have some extra component pieces.
Yours sincerely,
Dr. John Cherry, FRSC, PEng.
Distinguished Emeritus Professor, University of Waterloo and
G360 Centre for Applied Groundwater Research, University of Guelph
Dr. Beth Parker, Professor and NSERC Industrial Research Chair, and
Director, G360, Centre for Applied Groundwater Research, University of Guelph j
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Municipality of Clarington Attachment 3 to
Report PSD-053-16
Council Meeting Minutes April 27, 2015
Item 4
Resolution #C-136-15
Moved by Councillor Neal, seconded by Councillor Cooke
That Report PSD-024-15 be received;
That Council Resolution # C-172-14 (Attachment 3) granting G360 Group access to
Townline Road for the purpose of a deep borehole and providing a grant of $25,000 to
the University of Guelph be rescinded;
That the Municipality of Clarington provide.up to $25,000 to fund the Joint proposal of
Central Lake Ontario Conservation Authority, University of Guelph and McMaster
University (G360 Group) for their proposal "Hydrogeological Assessment of the South
Slope of the Oak Ridges Moraine" dated April 2, 2015 (Attachment 1);
That the project be funded with a transfer from the 2013 Donations Account to the
Consulting Reserve;
That Hydro One be requested to provide site access for the additional rotosonic
borehole and long term monitoring activities as outlined in the proposal in Attachment
1 to Report PSD-024-15;
That Steve Usher be requested to prepare a written report to the Enniskillen
Environmental Association based on his presentation of April 27, 2015; and
That all Interested parties listed in Report PSD-024-15 and any delegations be
advised of Council's decision,
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