SLIDE 1
Dufferin Aggregates Paris Pit CAP Meeting
November 26, 2019
1
■ Welcome and Introductions ■ Review & Approval of Minutes from previous meeting ■ Review of Questions Tracker ■ Operations Update ■ Membership Update ■ Next Meeting
2
Dufferin Aggregates Paris Pit CAP Meeting November 26, 2019 1 - - PowerPoint PPT Presentation
Dufferin Aggregates Paris Pit CAP Meeting November 26, 2019 1 - - PowerPoint PPT Presentation
Dufferin Aggregates Paris Pit CAP Meeting November 26, 2019 1 Agenda Welcome and Introductions Review & Approval of Minutes from previous meeting Review of Questions Tracker Operations Update Membership Update Next
SLIDE 2
SLIDE 3
Questions Tracker
3
SLIDE 4
■ Variance in metal concentrations is typical of groundwater found in glacial
deposits (poorly sorted sand and gravel deposits with variable amounts of fine grained sediment) and surface water bodies.
■ Aluminum is the 3rd most abundant element in the earth’s crust, commonly
found in silicate minerals such as feldspars. The source of Aluminum in glacial deposits is from weathering in feldspar minerals.
■ Aluminum is commonly found naturally in groundwater and surface water
and is not a result of aggregate extraction or aggregate washing.
■ Graphs of Aluminum and other selected metals (Arsenic, Lead, Nickel) were
developed to show concentrations versus time, demonstrating there are no increasing trends in Aluminum and other metal concentrations in groundwater and surface water.
4
Question: Why there is a variance in surface water sampling and groundwater sampling related to Aluminum and metals?
SLIDE 5
Operations Update
5
SLIDE 6
■ Employees
■ 16 hourly, 4 salary ■ Hiring in 2019 – 5 new employees ■ Hiring in 2020 – Expecting to hire 2 additional employees ■ Two shifts – Production & Maintenance
■ Review of samples:
■ 6.7mm Clear (Chip) ■ Concrete/Asphalt Sand ■ 19mm Concrete Stone ■ Raw feed/bank material
6
Operations Update
■ 13.2 mm Rounds ■ HL3 ■ Silt Sediment
SLIDE 7
■ Operations from June 2019 to November 2019 have included:
■ Shipping to customers ■ Processing of washed products (Mining west boundary) ■ Rehabilitation of side slopes (Boundary) ■ Plant Maintenance
■ Operations plan for remaining of 2019:
■ Shipping to customers ■ Main production shut down ■ Rehabilitation – side slopes and floors ■ Ongoing maintenance activities
7
Operations Update
SLIDE 8
8
Operations Update
- Stripping northern
section to prepare area for extraction
- Progressive
rehabilitation of southwest boundary
- Continue developing
settling pond cells
- Rehabilitation around
source pond October 15 2019
SLIDE 9
9
SLIDE 10
10
SLIDE 11
■ 2017: Source pond extracted ■ 2018: Soil placed and cattails planted around pond perimeter ■ 2019: Berm/slope earthworks and seeding completed
11
Source Pond
SLIDE 12
12
MECP Inspection ■ Provincial Officer completed an inspection of the site’s ECA (ISW) on
November 20, 2019.
■ He noted that it is typical to follow up with a site inspection for newly
granted ECA’s within the first couple years of operation.
■ Inspection consisted of a review of documentation required by the ECA,
as well as a site tour
■ No action items identified and a full report is to be compiled within the
next couple weeks, findings to be discussed at the next CAP meeting.
SLIDE 13
■ CAP Membership Review
■ Two members no longer wish to participate ■ Four members did not respond ■ Eight members confirmed participation
■ 2020 meeting schedule
■ For discussion
■ Topic suggestions
13
Closing
SLIDE 14
Thank you
14
SLIDE 15
GHD 078410
CRH Canada Group Inc.
78410
Dufferin Paris Pit
13-Aug-19
Groundwater (Overburden) Aluminum Concentration vs. Time Graph
FIGURE NO. 1a
- 0.10
0.10 0.30 0.50 0.70 0.90 1.10 1.30 1.50 Jan-2005 Jan-2006 Jan-2007 Jan-2008 Jan-2009 Jan-2010 Jan-2011 Jan-2012 Jan-2013 Jan-2014 Jan-2015 Jan-2016 Jan-2017 Jan-2018 Jan-2019 Jan-2020
Concentration (mg/L) Date
BH88-1-I BH88-2-I BH88-4-I BH88-4A-II BH88-5-I BH88-5-II BH88-6-I MW1-12 MW2-12 MW3-16 MW4-16 MW5-16 MW6-16 ODWQS
SLIDE 16
GHD 078410
CRH Canada Group Inc.
78410
Dufferin Paris Pit
13-Aug-19
Groundwater (Bedrock) Aluminum Concentration vs. Time Graph
FIGURE NO. 1b
0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 Jan-2005 Jan-2007 Jan-2009 Jan-2011 Jan-2013 Jan-2015 Jan-2017 Jan-2019
Concentration (mg/L) Date
BH88-4A-I BH88-5A-I ODWQS
SLIDE 17
GHD 078410
CRH Canada Group Inc.
78410
Dufferin Paris Pit
13-Aug-19
Surface Water Aluminum Concentration vs. Time Graph
FIGURE NO. 1c
1 2 3 4 5 6 7 8 Jan-2005 Jan-2007 Jan-2009 Jan-2011 Jan-2013 Jan-2015 Jan-2017 Jan-2019
Concentration (mg/L) Date
SW1B PWQO
SLIDE 18
GHD 078410
CRH Canada Group Inc.
78410
Dufferin Paris Pit
14-Aug-19
Surface Water (Recirculation Pond) Aluminum Concentration vs. Time Graph
FIGURE NO. 1d
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 Jan-2005 Jan-2007 Jan-2009 Jan-2011 Jan-2013 Jan-2015 Jan-2017 Jan-2019
Concentration (mg/L) Date
Recirculation Pond PWQO
SLIDE 19
GHD 078410
CRH Canada Group Inc.
78410
Dufferin Paris Pit
13-Aug-19
Groundwater (Overburden) Arsenic Concentration vs. Time Graph
FIGURE NO. 2a
0.000 0.002 0.004 0.006 0.008 0.010 0.012 Jan-2005 Jan-2006 Jan-2007 Jan-2008 Jan-2009 Jan-2010 Jan-2011 Jan-2012 Jan-2013 Jan-2014 Jan-2015 Jan-2016 Jan-2017 Jan-2018 Jan-2019 Jan-2020
Concentration (mg/L) Date
BH88-1-I BH88-2-I BH88-4-I BH88-4A-II BH88-5-I BH88-5-II BH88-6-I MW1-12 MW2-12 MW3-16 MW4-16 MW5-16 MW6-16 ODWQS
SLIDE 20
GHD 078410
CRH Canada Group Inc.
78410
Dufferin Paris Pit
13-Aug-19
Groundwater (Bedrock) Arsenic Concentration vs. Time Graph
FIGURE NO. 2b
0.000 0.002 0.004 0.006 0.008 0.010 0.012 Jan-2005 Jan-2007 Jan-2009 Jan-2011 Jan-2013 Jan-2015 Jan-2017 Jan-2019
Concentration (mg/L) Date
BH88-4A-I BH88-5A-I ODWQS
SLIDE 21
GHD 078410
CRH Canada Group Inc.
78410
Dufferin Paris Pit
13-Aug-19
Surface Water Arsenic Concentration vs. Time Graph
FIGURE NO. 2c
0.001 0.002 0.003 0.004 0.005 0.006 Jan-2005 Jan-2007 Jan-2009 Jan-2011 Jan-2013 Jan-2015 Jan-2017 Jan-2019
Concentration (mg/L) Date
SW1B PWQO
SLIDE 22
GHD 078410
CRH Canada Group Inc.
78410
Dufferin Paris Pit
13-Aug-19
Groundwater (Overburden) Lead Concentration vs. Time Graph
FIGURE NO. 3a
0.000 0.002 0.004 0.006 0.008 0.010 0.012 Jan-2005 Jan-2006 Jan-2007 Jan-2008 Jan-2009 Jan-2010 Jan-2011 Jan-2012 Jan-2013 Jan-2014 Jan-2015 Jan-2016 Jan-2017 Jan-2018 Jan-2019 Jan-2020
Concentration (mg/L) Date
BH88-1-I BH88-2-I BH88-4-I BH88-4A-II BH88-5-I BH88-5-II BH88-6-I MW1-12 MW2-12 MW3-16 MW4-16 MW5-16 MW6-16 ODWQS
SLIDE 23
GHD 078410
CRH Canada Group Inc.
78410
Dufferin Paris Pit
13-Aug-19
Groundwater (Bedrock) Lead Concentration vs. Time Graph
FIGURE NO. 3b
0.000 0.002 0.004 0.006 0.008 0.010 0.012 Jan-2005 Jan-2007 Jan-2009 Jan-2011 Jan-2013 Jan-2015 Jan-2017 Jan-2019
Concentration (mg/L) Date
BH88-4A-I BH88-5A-I ODWQS
SLIDE 24
GHD 078410
CRH Canada Group Inc.
78410
Dufferin Paris Pit
13-Aug-19
Surface Water Lead Concentration vs. Time Graph
FIGURE NO. 3c
0.005 0.01 0.015 0.02 0.025 0.03 Jan-2005 Jan-2007 Jan-2009 Jan-2011 Jan-2013 Jan-2015 Jan-2017 Jan-2019
Concentration (mg/L) Date
SW1B PWQO
SLIDE 25
GHD 078410
CRH Canada Group Inc.
78410
Dufferin Paris Pit
13-Aug-19
Groundwater (Overburden) Nickel Concentration vs. Time Graph
FIGURE NO. 4a
0.000 0.002 0.004 0.006 0.008 0.010 Jan-2005 Jan-2006 Jan-2007 Jan-2008 Jan-2009 Jan-2010 Jan-2011 Jan-2012 Jan-2013 Jan-2014 Jan-2015 Jan-2016 Jan-2017 Jan-2018 Jan-2019 Jan-2020
Concentration (mg/L) Date
BH88-1-I BH88-2-I BH88-4-I BH88-4A-II BH88-5-I BH88-5-II BH88-6-I MW1-12 MW2-12 MW3-16 MW4-16 MW5-16 MW6-16 ODWQS
There is no ODWQS for nickel.
SLIDE 26
GHD 078410
CRH Canada Group Inc.
78410
Dufferin Paris Pit
13-Aug-19
Groundwater (Bedrock) Nickel Concentration vs. Time Graph
FIGURE NO. 4b
0.000 0.002 0.004 0.006 0.008 0.010 Jan-2005 Jan-2007 Jan-2009 Jan-2011 Jan-2013 Jan-2015 Jan-2017 Jan-2019
Concentration (mg/L) Date
BH88-4A-I BH88-5A-I ODWQS
There is no ODWQS for nickel.
SLIDE 27
GHD 078410
CRH Canada Group Inc.
78410
Dufferin Paris Pit
13-Aug-19
Surface Water Nickel Concentration vs. Time Graph
FIGURE NO. 4c
0.005 0.01 0.015 0.02 0.025 0.03 Jan-2005 Jan-2007 Jan-2009 Jan-2011 Jan-2013 Jan-2015 Jan-2017 Jan-2019
Concentration (mg/L) Date
SW1B PWQO