Re: Risk Assessment – Ref No. 3678-8JPR93 …ottawa.ca/cs/groups/content/@webottawa/documents/pdf/mdaw/mtc3/...Rationale for Removing the ... .clean soil (Table 3 Site Condition

AMEC Environment & Infrastructure a Division of AMEC Americas Limited 300 - 210 Colonnade Road South Ottawa (Nepean), Ontario CANADA K2E 7L5 Tel (613) 727-0658 Fax (613 727 9465 www.amec.com

February 15, 2012

Environmental Assessment and Approvals Branch Ontario Ministry of the Environment Floor 12A, 2 St. Clair Ave. West Toronto, ON M4V 1L5 Attention: Director Dear Sir: Re: Risk Assessment – Ref No. 3678-8JPR93

Lansdowne Park and Sylvia Holden Commemorative Park Rationale for Removing the Geomembrane from the Soil Cap Covering the EasternLandfill

Further to our meeting of February 6th, 2012 in which we discussed the concept of removing the requirement for an impermeable geomembrane from the soil cap covering the eastern landfill, we are pleased to offer additional rationale for this recommendation. Background The risk management plan developed for Lansdowne Park acknowledged that an impermeable barrier was not required to manage unacceptable risk associated with soil contaminants present in the eastern landfill. The specification for a geomembrane was included based on initial discussions between the City and the Ministry District Office and the opinion expressed during those discussions that such a cap design would be mandated owing to the presence of the former landfill and concerns regarding increased infiltration once the parking areas were removed. As it was assumed that this would obviate the need for a ground water monitoring program, the engineering design for the eastern landfill included specifications for an Enviro Liner® EL4030 low-density polyethylene liner or equivalent over the surface of the former landfill as a means for preventing surface infiltration. The risk management measure preventing direct access to soil is specified by the requirement for “….clean soil (Table 3 Site Condition Standards in a Non-Potable Ground Water Condition - Residential/Parkland/Institutional Property Use), a hard surface cap or a combination thereof. The thickness of the “cap” overlying the geomembrane will be determined based on landscaping needs but will not be less than 500 millimetres inclusive of topsoil and/or surface treatment features such as paving”. During on-going review of the Risk Assessment report, AMEC has reconsidered the requirement for a geomembrane over the eastern landfill based on a number of factors. These include: the cost and complexity of design based on the delineated extent of impacts; drainage issues and the potential for methane accumulation under the cap; the lack of ground water impacts attributable to leaching from the landfill; and a commitment for on-going ground water and methane monitoring.

Lansdowne Park and Sylvia Holden Commemorative Park Rationale for Geomembrane Removal February 15, 2012

TZ10100102 Page 2

Ground Water Quality The results of ground water analyses at monitoring wells at and in the vicinity of the Eastern Landfill, including areas immediately hydraulically downgradient of the landfill, indicate no exceedances of Table 3 Site Conditions Standards (SCS) for the identified contaminants of concern (COC). Similarly, no such exceedances were observed elsewhere on the Lansdowne Park Property. Although exceedances of the Table 3 SCS for chloroform were observed at a number of monitoring wells on the RA RSC Property, as well as the remainder of Lansdowne Park during the initial ground water sampling programs in 2010, these exceedances were not observed in 2011 and have been attributed to leaking municipal infrastructure (e.g. water mains and sanitary sewers) as opposed to leaching from a contaminant source. It is anticipated that re-occurrence of the chloroform impacts after redevelopment will be mitigated through replacement of the existing servicing infrastructure with that which is required to support the redevelopment. In addition to COC, landfill leachate indicator parameters as listed in Column 2 of Schedule 5 of the 1998 Landfill Standards were also analyzed as part of the ground water sampling program. The leachate parameter analyses indicate some level of impact by landfill leachate; however, in the absence of suitable background sampling location the magnitude of the impact relative to background ground water quality cannot be readily quantified. The absence of a suitable background sampling locations is attributed to the outward radial pattern originating at the north end of the Eastern Landfill due to leakage from the Rideau Canal and preferential flow along the path of the former inlet. Through the northern half of the landfill the seasonal water resides within the waste fill layer. As such, the ground water samples collected from wells in this area (i.e. MW12, MW27, MW31) are thus interpreted to be representative of ground water in equilibrium with the soil and waste and thus are taken to be representative of the worse case ground water impacts attributable to soil leaching. Although not considered to be an ideal background monitoring well due to its close proximity to the Eastern Landfill, it may be reasonable to interpret MW10-18 as being representative of background ground water quality based on its hydraulically upgradient location relative to the Eastern Landfill. As such, ground water is marginally degraded by leachate with respect to background, with parameters reporting in the range of < 1 to up to 9.2 times background concentration for all parameter but iron. While iron exhibits a higher degree of variability and is present at concentrations of up to 20.1 mg/L, it has been evaluated in the RA for its impacts on surface water. A summary of analytical results for ground water are appended to this memorandum as are borehole locations and relevant cross sections through relevant portions of the landfill. With the exception of chloroform, no parameters exceed the applicable Table 3 SCS whereas the concentrations of leachate related parameters are not indicative of significant impacts by landfill leachate. Assessment of the Soil Leaching The potential for soil leaching was specifically addressed in the risk assessment using the Domenico 2D Transport Model, which is the default model used by the MOE in the development of the SCS and in the modified generic risk assessment model (MGRA). The model was run for those PAHs where maximum concentrations in soil exceed the S-GW3 component values and metals (i.e. Sb, As, Ba, Cd, Cu, Pb, Mo, Se, Sn, Zn, Fe and MeHg) for which the MOE has not established S-GW3 values. The model calculates concentrations of COCs in pore water in


TZ10100102 Page 3

equilibrium with the maximum concentration of each COC in soil. The pore water concentration is used to calculate the concentration in ground water resulting continuous leaching in the source zone. This “dilution factor” takes into account assumptions regarding surface infiltration and the size of the mixing zone (note that the dilution factor of 1.127 for pore water into ground water employed for the RA RSC Property is less than that used in the development of the MOE SCS). Predicted ground water concentrations at the point of discharge are based on the aquifer properties (e.g. porosity, foc, etc). The value used for surface infiltration is a default value of 0.28 m/annum for coarse-grained soil based on the Ministry’s MGRA model. The Rideau Valley Conservation Authority indicates that the volume of water available for ground water recharge is on the order of 0.365 m/a (total precipitation minus evapotranspiration). Assuming an infiltration factor of 70% consistent with surface landscaping, a reasonable value for ground water recharge once the area is landscaped would be on the order of 0.255 m/a, providing a slightly less conservative value than that used in the model for the RA RSC Property. The results of the Domenico modeling are presented in Appendix H of the RA report. Based on equilibrium partitioning and a non-depleting source, the model predicts ground water concentrations orders of magnitude higher than what has been measured at the Site. Despite this, there are no unacceptable risks associated with surface water discharge. As such, concerns over increased infiltration leading to the potential for unacceptable risks due to soil leaching are not supported by the modeling that has been conducted as part of the risk assessment. Ground Water and Methane Monitoring Based on concerns regarding placement of impacted soil within the eastern berm, the Ministry has recommended that a ground water monitoring program be implemented post construction. AMEC has proposed a program consisting of monitoring ten ground water monitoring wells on a semi-annual basis (i.e. spring and fall). Monitoring will include measuring ground water elevations as well as analysis of relevant COC including PAHs, PHCs, metals and landfill leachate indicator parameters as per column 2 of Schedule 5 of the Landfill Standards Guideline (MOE 1998). As discussed during the meeting of February 6th, an additional monitoring well will be established in the vicinity of the former McElroy Building near the point where ground water exits the Site. It has been proposed that the monitoring program be carried out for a period of three years from the date of final construction after which the need for continued monitoring shall be determined based on the results of the monitoring. A contingency plan would be developed in the event that an exceedance of the Table 3 SCS for one or more of the parameters noted above is realized and confirmed through follow-up monitoring. Similarly, a contingency plan would also be developed should monitoring data indicate an increasing trend in the concentrations of the parameters being monitored. The contingency plan may include continued monitoring beyond the three year target termination date, increased monitoring frequency, further evaluation of potential risks and implementation of any mitigative measures as deemed appropriate. The ground water monitoring program is considered sufficient to identify any changes in ground water quality that may result from increased surface infiltration at the Site. With respect to methane gas, a concern has been expressed that increased surface infiltration may enhance the degree to which anaerobic conditions exist in the sub-surface thereby increasing the potential for methane gas generation. AMEC has proposed additional methane monitoring to better understand the potential for methane generation and accumulation in on-


TZ10100102 Page 4

site structures. Similar to the ground water monitoring program described above, a methane monitoring program will detect and increased trends in methane generation such that contingency measures can be implemented should they be required. In conclusion, we are of the opinion that a geomembrane as originally specified in the risk management plan developed for the RA RSC Property is not required to mitigate exposure to contaminants present in the eastern landfill. This is based on the following considerations:

• A geomembrane is not required to prevent direct access to contaminants present in soil. This is accomplished by the specifications for a hard or soft cap;

• The potential for unacceptable risk arising from increased soil leaching with subsequent discharge to surface water is not supported by modeling. Nevertheless, this will be evaluated via a ground water monitoring program that will continue post construction; and,

• Similarly, the potential for an increase in methane generation resulting from the promotion of anaerobic conditions in the subsurface will be evaluated via methane monitoring program with contingency measures as appropriate.

The removal of the geomembrane from the specifications of the cap covering the eastern landfill greatly simplifies the design of this feature and the requirements for on-going monitoring and maintenance. Should the ministry be receptive to this change, we will modify the Risk Management Plan and design drawings accordingly and submit them for review. In the interim, should you have any questions or require additional information please feel free to contact to undersigned at your convenience. Respectfully Submitted, AMEC Environment & Infrastructure a division of AMEC Americas Limited

J. Stuart Bailey, Ph.D., QPRA Steven Gable, P. Eng., P.E., MBA, rmc Principal, Risk Assessment Associate Engineer

Kevin D. Hicks, M.Sc., P.Geo., QPESA Senior Associate Hydrogeologist Attachments (4)

Stratigraphic and Instrumentation Logs – Eastern Landfill and Vicinity Cross Section B-B’ and G-G’ Groundwater Monitoring Data – Eastern Landfill and Vicinity Groundwater Analytical Data – Eastern Landfill and Vicinity

Stratigraphic and Instrumentation Log:

Drilled By:Drill Date: Drill Method:Hole Size:

Project No: Project Name:Client:Location:

Logged By: Entered By:

Well Casing Size / Slot Size:Casing Elevation:

Vapour Unit:

Datum:Checked by:Sheet: 1 of 1

Elevation:Easting:Northing:

300-210 Colonnade RoadOttawa, OntarioK2E 7L5

SUBSURFACE PROFILE SAMPLE DATA

Dep

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0 0ft m

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1

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MW10-10

George Downing Estate DrillingMarch 1, 2010 CME Truck Hollow Stem Auger200 mm

TZ101001 Lansdowne ParkCity of OttawaLansdowne Park

JFT JFT

Ground SurfaceASPHALTFILLFine gravellly loamy sand, grey, damp

Fine loamy sand, grey

Waste: wood

LOAMY SANDFine loamy sand, grey

GRAVELLY LOAMY SANDFine gravelly loamy sand, grey

Brown

Becomes wet

Flowing sands (did not sample)

END OF BOREHOLE

64.750.00

61.703.05

60.943.81

57.137.62

AS

AS

SS

SS

SS

SS

SS

SS

SS

1

2

3

4

5

6

7

8

9

NA

NA

7

6

8

22

18

7

13

N/A

N/A

46

63

38

29

17

50

54

20 40 60 80(ppm)

Total Organic Vapour

250 750 1250(ppm)

Combustible Vapour

Sample submitted for PAH and

Metals analyses.

Sample submitted for PHC F1-F4 and BTEXS analyses.

52 mm / 10 Slot64.69

RKI Eagle / MiniRAE PID

GeodeticKDH

64.75368859.645029217.086






Vapour Unit:





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1

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MW10-11



JFT JFT

Ground SurfaceASPHALTFILLFine gravelly loamy sand, grey, damp

Brown

Waste: wood

Fine loamy sand, grey/brownWaste: concrete

Waste: wood, concrete

LOAMY SANDFine loamy sand, brown

Fine sandy loam, grey/brown

GRAVELLY LOAMY SANDFinegravelly loamy sand, brown, moist

Becomes wet


END OF BOREHOLE

64.890.00

61.083.81

60.324.57

57.277.62

AS

AS

SS

SS

SS

SS

SS

SS

SS

1

2

3

4

5

6

7

8

9

NA

NA

10

11

11

8

20

14

9

N/A

N/A

33

21

29

50

29

46

33

20 40 60 80(ppm)


250 750 1250(ppm)

Combustible Vapour

Sample submitted for PAH analyses.


52 mm / 10 Slot64.8


GeodeticKDH

64.89368895.3835029169.555






Vapour Unit:





Dep

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0 0ft m

1

1

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MW10-12



JFT JFT


Waste: crushed stone

Fine loamy sand, dark grey/blackWaste: wood

Fine gravelly loamy sand, greyWaste: brick, ash/cinders

SILTSilt, trace organics

LOAMY SANDFine loamy sand, grey, moist

GRAVELLY LOAMY SANDFine gravelly loamy sand, grey, wet

Gravelly loamy sand, brown, wet


END OF BOREHOLE

64.710.00

60.903.81

60.144.57

59.385.33

57.097.62

AS

AS

SS

SS

SS

SS

SS

SS

SS

1

2

3

4

5

6

7

8

9

NA

NA

21

3

2

1

7

12

6

N/A

N/A

25

25

29

67

50

75

67

20 40 60 80(ppm)


250 750 1250(ppm)

Combustible Vapour

Sample submitted for Metals and pH

analyses.



Metals analyses.

52 mm / 10 Slot64.64


GeodeticKDH

64.71368889.7195029252.056






Vapour Unit:





Dep

th

0 0ft m

1

1

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MW10-13



JFT JFT


Fine loamy sand, trace organics, grey

Becomes moist

Becomes wet

SANDY LOAMFine sandy loam, grey/brown, trace organics, wet

SILTSilt, brown/grey

END OF BOREHOLE

64.690.00

60.883.81

60.124.57

59.515.18

AS

AS

SS

SS

SS

SS

SS

1

2

3

4

5

6

7

NA

NA

3

2

4

1

1

N/A

N/A

54

58

67

96

79

20 40 60 80(ppm)


250 750 1250(ppm)

Combustible Vapour


Metals analyses.


(DUP-1)

52 mm / 10 Slot64.61


GeodeticKDH

64.69368862.1735029276.164






Vapour Unit:





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th

0 0ft m

1

1

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Remarks

MW10-16



JFT JFT


Fine sandy loam, brown

Fine loamy sand grained, grey

Waste: ash/cinders, glass

Waste: ash/cinders, glass, slag

Waste: ash/cinders, glass, slag

LOAMY SANDFine loamy sand, grey

GRAVELY LOAMY SANDFine gravelly loamy sand, grey

Becomes moist

LOAMY SANDFine loamy sand, grey, wet

Flowing sands

END OF BOREHOLE

64.710.00

60.903.81

60.144.57

58.616.10

57.097.62

AS

AS

SS

SS

SS

SS

SS

SS

SS

SS

1

2

3

4

5

6

7

8

9

10

NA

NA

10

4

2

3

5

6

6

4

N/A

N/A

33

38

38

21

58

0

79

79

20 40 60 80(ppm)


250 750 1250(ppm)

Combustible Vapour

Sample submitted for Metals and pH analyses. (DUP-5)



52 mm / 10 Slot64.63


GeodeticKDH

64.71368932.6485029314.726






Vapour Unit:





Dep

th

0 0ft m

1

1

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MW10-17



JFT JFT


Brown/grey


Fine loamy sand, brown

Fine loamy sand, brown/grey

Brown

GRAVELLY LOAMY SANDGravelly loamy sand, grey, moist

Becomes wet


END OF BOREHOLE

64.990.00

63.471.52

59.965.03

57.377.62

AS

AS

SS

SS

SS

SS

SS

SS

SS

1

2

3

4

5

6

7

8

9

NA

NA

6

6

6

6

14

11

14

N/A

N/A

58

67

50

54

63

58

54

20 40 60 80(ppm)


250 750 1250(ppm)

Combustible Vapour



(DUP-2)

52 mm / 10 Slot64.94


GeodeticKDH

64.99368953.2525029167.128






Vapour Unit:





Dep

th

0 0ft m

1

1

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MW10-18



JFT JFT


Brown

layer of stoneFine loamy sand, brown

Becomes moist

Becomes wet, grey

SILTSilt, trace organics, brown

END OF BOREHOLE

65.120.00

60.854.27

60.554.57

AS

AS

SS

SS

SS

SS

1

2

3

4

5

6

NA

NA

15

3

2

2

N/A

N/A

54

33

50

54

20 40 60 80(ppm)


250 750 1250(ppm)

Combustible Vapour

Sample submitted for Metals and pH analyses. (DUP-6)


52 mm / 10 Slot64.98


GeodeticKDH

65.12368903.4695029375.652






Vapour Unit:





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0 0ft m

1

1

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MW10-28



JFT JFT


Grey/brown

LOAMY SANDFine loamy sand sand, brown

SANDY LOAMFine sandy loam, trace organics, dark brown

LOAMY SANDFine loamy sand sand, brown, moist

SANDY LOAMFine sandy loam, brown, moist

LOAMY SANDFine loamy sand sand, grey, wet

SANDY LOAMFine sandy loam, brown/grey, wet

END OF BOREHOLE

64.810.00

63.291.52

62.222.59

61.763.05

61.003.81

60.544.27

60.244.57

59.635.18

AS

AS

SS

SS

SS

SS

SS

1

2

3

4

5

6

7

NA

NA

6

3

2

4

2

N/A

N/A

38

92

29

67

71

20 40 60 80(ppm)


250 750 1250(ppm)

Combustible Vapour


52 mm / 10 Slot64.74


GeodeticKDH

64.81368922.1395029188.699






Vapour Unit:





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MW10-29



JFT JFT


SANDY LOAMFine sandy loam, brown


GRAVELLY LOAMY SANDFine loamy sand, pieces of rock

Gravelly loamy sand, trace pieces of rock, brown/grey, moist

Becomes wet

LOAMY SANDFine loamy sand

END OF BOREHOLE

64.920.00

63.401.52

62.632.29

59.895.03

58.066.86

57.307.62

AS

AS

SS

SS

SS

SS

SS

SS

SS

SS

1

2

3

4

5

6

7

8

9

10

NA

NA

17

5

10

10

12

17

16

12

N/A

N/A

33

75

50

54

50

42

50

54

20 40 60 80(ppm)


250 750 1250(ppm)

Combustible Vapour

Sample submitted for Metals and pH

analyses.


52 mm / 10 Slot64.74


GeodeticKDH

64.92368840.1835029137.578






Vapour Unit:





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MW11-1

George Downing Estate Drilling28-July-11 CME Truck Hollow Stem Auger200 mm

TZ101001.01 Lansdowne Park SupplementalCity of OttawaLansdowne Park

BS BS

Ground SurfaceASPHALT

LOAMY SAND (FILL)Very fine grained, some organics, trace fine gravel, dark brown, dry/damp

Becoming brown

Becoming fine grained

GRAVELLY LOAMY SAND Medium grained, brown, moist/wet

END OF BOREHOLE

64.680.00

60.873.81

57.067.62

SS

SS

SS

SS

SS

SS

SS

SS

SS

SS

1

2

3

4

5

6

7

8

9

10

7

3

8

4

25

15

15

45

50+

30

63

50

63

71

42

50

58

67

83

75

20 40 60 80(ppm)


250 750 1250(ppm)

Combustible Vapour


Metals analysis. (5'-7')

Sample submitted for FOC analysis.

(15'-17')

Sample submitted for FOC analysis.

(2.5'-4.5')

52 mm / 10 Slot64.59

MiniRAE 3000 PID

GeodeticKH

64.68368887.945029102.05






Vapour Unit:





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g W

ell

Det

ails

Remarks

MW11-2

Strata Soil Sampling Inc.27-July-11 Geoprobe 7822 Direct Push w HSA Overdrill82 mm / 200 mm

TZ101001.01 Lansdowne Park SupplementalCity of OttawaLansdowne Park

LP/BS BS

Ground SurfaceASPHALT

GRAVELLY LOAMY SAND (FILL)Very fine grained, grey, dry/damp

LOAMY SAND (FILL)Very fine grained, light brown, dry/damp

Becoming fine grained, brown

Becoming moist/wet

LOAMY SANDMedium grained, brown, moist, trace gravel

SANDMedium grained, trace fine gravel, brown

END OF BOREHOLE

64.910.00

64.150.76

61.863.05

59.585.33

57.297.62

PH

PH

PH

PH

PH

PH

PH

PH

PH

PH

1

2

3

4

5

6

7

8

9

10

70

70

97

97

100

100

100

100

53

53

20 40 60 80(ppm)


250 750 1250(ppm)

Combustible Vapour


Metals analysis. (2.5'-5')

Sample submitted for PHC analysis.

(7.5'-10')

Sample submitted for VOC analysis.

(10'-12.5')

52 mm / 10 Slot64.86

MiniRAE 3000 PID

GeodeticKH

64.91368942.615029135.55

Table 1. Ground Water Monitoring Data - Eastern Landfill and VicinityMinimum Maximum Seasonal

Easting Northing Elevation Elevation Fluctuation(masl) (masl) (m)

MW 12 368894.390 5029324.665 64.820 64.850 unknown 3.068 61.752 2.512 62.308 2.439 62.381 61.752 62.381 0.629MW 27 368915.833 5029286.818 64.712 64.738 unknown - - - - 2.392 62.320 - - NAMW 31 368888.801 5029341.746 65.010 65.045 60.475 - - - - 2.652 62.358 - - NAMW10-10 368859.640 5029217.086 64.690 64.750 57.130 5.362 59.328 4.804 59.886 4.086 60.604 59.328 60.604 1.276MW10-11 368895.383 5029169.555 64.800 64.890 57.270 5.526 59.274 4.907 59.893 4.219 60.581 59.274 60.581 1.307MW10-12 368889.719 5029252.056 64.640 64.710 57.090 5.154 59.486 4.630 60.010 4.073 60.567 59.486 60.567 1.081MW10-13 368862.173 5029276.164 64.610 64.690 59.510 3.794 60.816 3.162 61.448 2.505 62.105 60.816 62.105 1.289MW10-16 368932.648 5029314.726 64.630 64.710 57.700 4.833 59.797 4.464 60.166 4.153 60.477 59.797 60.477 0.680MW10-17 368953.252 5029167.128 64.940 64.990 57.370 5.697 59.243 5.085 59.855 4.429 60.511 59.243 60.511 1.268MW10-18 368903.469 5029375.652 64.980 65.120 60.550 2.868 62.112 1.782 63.198 1.898 63.082 62.112 63.198 1.086

April 1, 2010Depth to Ground Water

(mbtoc)

Ground Water

Elevation(masl)

Bottom of Well

Screen Elevation

(m)

MonitorLocation

Top of Casing

Elevation(m)

MTM Coordinates Ground Surface

Elevation(m)

August 10, 2011Depth to Ground Water

(mbtoc)

Ground Water

Elevation(masl)

May 25, 2010Depth to Ground Water

(mbtoc)

Ground Water

Elevation(masl)

MW10 18 368903.469 5029375.652 64.980 65.120 60.550 2.868 62.112 1.782 63.198 1.898 63.082 62.112 63.198 1.086MW10-28 368922.139 5029188.699 64.740 64.810 59.630 5.151 59.589 4.862 59.878 3.872 60.868 59.589 60.868 1.279MW10-29 368840.183 5029137.578 64.740 64.920 57.300 5.388 59.352 4.736 60.004 4.015 60.725 59.352 60.725 1.373MW11-1 368887.938 5029102.047 64.594 64.676 57.056 - - - - 3.974 60.620 - - NAMW11-2 368942.610 5029135.546 64.857 64.907 57.287 - - - - 4.318 60.539 - - NANotes:mbtoc = Metres below top of casing.masl = Metres above sea level.N/A = Not Accessible.Survey Data Provided by City of Ottawa Surveys and Mapping Unit.

TZ101001 AMEC Earth & Environmental Page 1 of 1

Table 2Summary of Petroleum Hydrocarbon Ground Water Analyses - Eastern Landfill and Vicinity

RL 2011 EPA Standards Analytical Results - µg/L

Sample Location MW10-10 MW10-10 MW10-11 MW10-11 MW10-12 MW10-12 MW10-12 MW10-12 MW10-12Sample No. MW10-10 MW10-10 MW10-11 MW10-11 MW10-12 MW10-12 MW10-12 Dup-2 Average

Laboratory ID Non-Potable B10-07066-2 1022188-06 B10-07462-7 1022196-03 B10-07462-5 1022188-07 1134051-09 1134051-13Sample Date (mm/dd/yy) Ground Water 03/22/10 05/27/10 03/24/10 05/28/10 03/24/10 05/27/10 08/12/11 08/12/11 08/12/11

Date of Analysis (mm/dd/yy) (Table 3) 3/27/20101 6/4/20103 3/27/20105 6/5/20104 3/27/20105 6/4/20103 8/19/20117 8/19/20117

0.5 (430) 44 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.50.5 18000 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.50.5 2300 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5- - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5- - < 1.0 < 0.5 < 1.0 < 0.5 < 1.0 < 0.5 < 0.5 < 0.5 < 0.5

0.5 4200 < 1.5 < 1.0 < 1.5 < 1.0 < 1.5 < 1.0 < 0.5 < 0.5 < 0.50.5 (9100) 1300 < 0.5 < 0.4 < 0.5 < 0.4 < 0.5 < 0.4 < 0.5 < 0.5 < 0.525 750** < 50 < 200 < 50 < 200 < 50 < 200 < 25 < 25 < 25

100 150** < 50 < 100 < 50 < 100 < 50 217 < 100 < 100 < 100500 500** < 500 < 100 < 500 < 100 < 500 400 < 100 < 100 < 100500 500** < 500 < 100 < 500 < 100 < 500 < 100 < 100 < 100 < 100

- - - - - - - - - - -Notes:

FO = Fuel Oil.HO = Heavy Oil.NDP = No Distinct Pattern.PHC = Petroleum Hydrocarbons.

o-Xylenes m,p-Xylenes

Styrene PHC F1 (C6 - C10) *

** For a Site to Meet This Standard There Must be no Evidence of Free Product, Including but not Limited to, Visible Petroleum Hydrocarbon Film or Sheen Present on Ground Water, Surface Water or in any Ground Water or Surface Water Samples.

* F1 Fraction Does Not Include BTEX; However, the Proponent has the Choice as to Whether or not to Subtract BTEX from the Analytical Result.

PHC F3 (>C16 - C34)

Resemblance PHC F4 (>C34)

Benzene

Parameters

Total Xylenes

PHC F2 (>C10 - C16)

Toluene Ethylbenzene

Full Depth Generic Site Condition Standards


Table 2Summary of Petroleum Hydrocarbon Ground Water Analy

RL 2011 EPA Standards

Sample LocationSample No.

Laboratory ID Non-PotableSample Date (mm/dd/yy) Ground Water

Date of Analysis (mm/dd/yy) (Table 3)0.5 (430) 440.5 180000.5 2300- -- -

0.5 42000.5 (9100) 130025 750**

100 150**500 500**500 500**

- -Notes:






PHC F3 (>C16 - C34)


Benzene

Parameters

Total Xylenes

PHC F2 (>C10 - C16)


Full Depth Generic Site Condition Standards MW10-12 MW10-13 MW10-13 MW10-16 MW10-16 MW10-16 MW10-16 MW10-16 MW10-17

RPD MW10-13 MW10-13 MW10-16 MW10-16 Dup-1 Average RPD MW10-17% B10-07462-3 1022188-08 B10-07066-1 1022099-10 1022099-11 % B10-07462-6

08/12/11 03/24/10 05/27/10 03/22/10 05/26/10 05/26/10 05/26/10 05/26/10 03/24/103/27/20105 6/4/20103 3/27/20101 6/1/20102 6/1/20102 3/27/20105

- < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5- < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5- < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5- < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5- < 1.0 < 0.5 < 1.0 < 0.5 < 0.5 < 0.5 - < 1.0- < 1.5 < 1.0 < 1.5 < 1.0 < 1.0 < 1.0 - < 1.5- < 0.5 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 - < 0.5- < 50 < 200 < 50 < 200 < 200 < 200 - < 50- < 50 < 100 < 50 < 100 < 100 < 100 - < 50- < 500 < 100 500 < 100 < 100 < 100 - 1000- < 500 < 100 < 500 < 100 < 100 < 100 - 1000- - - NDP - - - - HO







0.5 42000.5 (9100) 130025 750**

100 150**500 500**500 500**

- -Notes:






PHC F3 (>C16 - C34)


Benzene

Parameters

Total Xylenes

PHC F2 (>C10 - C16)



MW10-17 Dup-1 Average RPD MW10-17 MW10-17 MW10-17 MW10-18 MW10-28B10-08865-3 B10-08865-5 % 1022188-09 1133284-01 1136272-01 1022188-10 1022188-13

04/08/10 04/08/10 04/12/10 04/12/10 05/27/10 08/11/11 09/02/11 05/27/10 05/27/104/12/20106 4/12/20106 6/4/20103 8/18/20118 9/6/20119 6/4/20103 6/4/20103

- - - - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5- - - - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5- - - - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5- - - - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5- - - - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5- - - - < 1.0 < 0.5 < 1.0 < 1.0 < 1.0- - - - < 0.4 < 0.5 < 0.4 < 0.4 < 0.4

< 50 < 50 < 50 - < 200 < 25 < 200 < 200 < 200< 50 < 50 < 50 - < 100 < 100 < 100 < 100 < 100< 500 < 500 < 500 - < 100 783 < 100 < 100 < 100< 500 < 500 < 500 - < 100 1270 < 100 < 100 < 100

- - - - - - - - -







0.5 42000.5 (9100) 130025 750**

100 150**500 500**500 500**

- -Notes:






PHC F3 (>C16 - C34)


Benzene

Parameters

Total Xylenes

PHC F2 (>C10 - C16)



Dup-2 Average RPD MW10-29 MW10-29 MW11-1 MW11-1 MW11-2 Dup-41022188-14 % B10-07513-4 1022196-06 1133284-04 1136272-02 1134058-08 1134058-09

05/27/10 05/27/10 05/27/10 03/25/10 05/28/10 08/11/11 09/02/11 08/15/11 08/15/116/4/20103 3/27/201010 6/5/20104 8/18/20118 9/6/20119 8/22/20117 8/22/20117

< 0.5 < 0.5 - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5< 0.5 < 0.5 - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5< 0.5 < 0.5 - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5< 0.5 < 0.5 - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5< 0.5 < 0.5 - < 1.0 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5< 1.0 < 1.0 - < 1.5 < 1.0 < 0.5 < 0.5 < 0.5 < 0.5< 0.4 < 0.4 - < 0.5 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5< 200 < 200 - < 50 < 200 < 25 < 25 < 25 < 25< 100 < 100 - < 50 < 100 < 100 < 100 < 100 < 100< 100 < 100 - < 500 < 100 840 < 100 < 100 < 100< 100 < 100 - < 500 < 100 825 < 100 < 100 < 100

- - - - - - - - -







0.5 42000.5 (9100) 130025 750**

100 150**500 500**500 500**

- -Notes:






PHC F3 (>C16 - C34)


Benzene

Parameters

Total Xylenes

PHC F2 (>C10 - C16)


Full Depth Generic Site Condition Standards MW11-2 MW11-2 MW12 MW12 MW12

Average RPD MW12 MW12 MW12% B10-08909-1 1022196-07 1134051-08

08/15/11 08/15/11 04/08/10 05/28/10 08/12/114/12/201012 6/5/20104 8/19/20117

< 0.5 - < 0.5 < 0.5 < 0.5< 0.5 - < 0.5 < 0.5 < 0.5< 0.5 - < 0.5 < 0.5 < 0.5< 0.5 - < 0.5 < 0.5 < 0.5< 0.5 - < 1.0 < 0.5 < 0.5< 0.5 - < 1.5 < 1.0 < 0.5< 0.5 - < 0.5 < 0.4 < 0.5< 25 - < 50 < 200 < 25< 100 - 280 < 100 < 100< 100 - 1000 < 100 < 100< 100 - 800 < 100 < 100

- - FO/HO/NDP - -


Table 3Summary of Polynuclear Aromatic Hydrocarbon Ground Water Analyses - Eastern Landfill and Vicinity


Sample Location MW10-11 MW10-11 MW10-12 MW10-12 MW10-13 MW10-13 MW10-16 MW10-16Sample No. MW10-11 MW10-11 MW10-12 MW10-12 MW10-13 MW10-13 MW10-16 MW10-16

Laboratory ID Non-Potable B10-07462-7 1022196-03 B10-07462-5 1022188-07 B10-07462-3 1022188-08 B10-07066-1 1022099-10Sample Date (mm/dd/yy) Ground Water 03/24/10 05/28/10 03/24/10 05/27/10 03/24/10 05/27/10 03/22/10 05/26/10

Date of Analysis (mm/dd/yy) (Table 3) 03/30/10 06/03/10 03/30/10 06/03/10 03/30/10 06/03/10 03/29/10 05/31/101.0 (1700) 600 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.051 1.8 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05

0.1 2.4 < 0.05 < 0.01 < 0.05 < 0.01 < 0.05 0.02 0.07 < 0.010.2 4.7 0.19 < 0.01 < 0.05 < 0.01 < 0.05 < 0.01 0.12 < 0.010.01 0.81 0.19 < 0.01 < 0.01 < 0.01 0.02 < 0.01 0.21 < 0.010.1 0.75 0.17 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 0.13 < 0.050.1 0.4 0.07 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.050.2 0.2 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05

Biphenyl, 1,1- 0.5 1700 0.21 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 0.17 < 0.050.1 1 0.21 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 0.17 < 0.050.2 0.52 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.050.4 130 0.43 < 0.01 0.08 < 0.01 0.09 < 0.01 0.38 < 0.010.5 400 < 0.05 < 0.05 < 0.05 0.05 < 0.05 < 0.05 < 0.05 < 0.050.2 0.2 0.12 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.052 1800 < 0.05 < 0.05 < 0.05 0.07 < 0.05 0.06 < 0.05 < 0.052 1800 < 0.05 < 0.05 < 0.05 0.1 < 0.05 0.08 < 0.05 < 0.052 1800 < 0.1 < 0.1 < 0.1 0.17 < 0.1 0.14 < 0.1 < 0.12 (6400) 1400 < 0.05 < 0.05 0.05 0.12 < 0.05 0.12 < 0.05 < 0.05

0.1 580 0.17 < 0.05 0.06 < 0.05 0.1 0.08 0.32 < 0.050.2 68 0.06 < 0.01 0.07 < 0.01 0.34 < 0.01 < 0.01 0.2

Notes:* The Methyl Naphthalene Standards are Applicable to Both 1-Methyl Naphthalene and 2- Methyl Naphthalene , with the Provision that if Both are Detected the Sum of the Two Must not

Indeno(1,2,3,c,d)pyrene

Methylnaphthalene, 2-* Methylnaphthalene (total)

Dibenzo(a,h)anthracene

Methylnaphthalene, 1-*

Fluorene

Pyrene

Naphthalene

Fluoranthene


Benzo(a)anthracene

Parameters

Phenanthrene

Acenaphthene Acenaphthylene Anthracene

Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,i)perylene

Chrysene

Benzo(k)fluoranthene


Table 3Summary of Polynuclear Aromatic Hydrocarbon Ground




Date of Analysis (mm/dd/yy) (Table 3)1.0 (1700) 6001 1.8

0.1 2.40.2 4.70.01 0.810.1 0.750.1 0.40.2 0.2

Biphenyl, 1,1- 0.5 17000.1 10.2 0.520.4 1300.5 4000.2 0.22 18002 18002 18002 (6400) 1400

0.1 5800.2 68






Fluorene

Pyrene

Naphthalene

Fluoranthene


Benzo(a)anthracene

Parameters

Phenanthrene



Chrysene


MW10-16 MW10-16 MW10-16 MW10-18 MW10-18 MW10-29 MW10-29 MW11-1DUP-1 Average RPD MW10-18 MW10-18 MW10-29 MW10-29 MW11-1

1022099-11 % B10-07462-4 1022188-10 B10-07513-4 1022196-06 1133284-0405/26/10 05/26/10 05/26/10 03/24/10 05/27/10 03/25/10 05/28/10 08/11/1105/31/10 03/30/10 06/03/10 03/31/10 06/03/10 08/16/11< 0.05 < 0.05 - < 0.05 < 0.05 < 0.05 < 0.05 < 0.05< 0.05 < 0.05 - < 0.05 < 0.05 < 0.05 < 0.05 < 0.05< 0.01 < 0.01 - < 0.05 < 0.01 < 0.05 < 0.01 < 0.01< 0.01 < 0.01 - < 0.05 < 0.01 < 0.05 < 0.01 < 0.01< 0.01 < 0.01 - 0.09 < 0.01 < 0.01 < 0.01 < 0.01< 0.05 < 0.05 - 0.1 < 0.05 < 0.05 < 0.05 < 0.05< 0.05 < 0.05 - < 0.05 < 0.05 < 0.05 < 0.05 < 0.05< 0.05 < 0.05 - 0.05 < 0.05 < 0.05 < 0.05 < 0.05< 0.05 < 0.05 - - < 0.05 - < 0.05 < 0.05< 0.05 < 0.05 - < 0.05 < 0.05 < 0.05 < 0.05 < 0.05< 0.05 < 0.05 - < 0.05 < 0.05 < 0.05 < 0.05 < 0.05< 0.01 < 0.01 - 0.2 < 0.01 < 0.05 < 0.01 < 0.01< 0.05 < 0.05 - < 0.05 < 0.05 < 0.05 < 0.05 < 0.05< 0.05 < 0.05 - < 0.05 < 0.05 < 0.05 < 0.05 < 0.05< 0.05 < 0.05 - < 0.05 0.06 < 0.05 < 0.05 < 0.05< 0.05 < 0.05 - < 0.05 0.08 < 0.05 < 0.05 < 0.05< 0.1 < 0.1 - < 0.1 0.14 < 0.1 < 0.1 < 0.10< 0.05 < 0.05 - < 0.05 0.1 0.08 < 0.05 < 0.05< 0.05 < 0.05 - 0.13 < 0.05 < 0.05 < 0.05 < 0.05< 0.01 -- - 0.17 < 0.01 0.1 < 0.01 < 0.01


Table 3Summary of Polynuclear Aromatic Hydrocarbon Ground




Date of Analysis (mm/dd/yy) (Table 3)1.0 (1700) 6001 1.8

0.1 2.40.2 4.70.01 0.810.1 0.750.1 0.40.2 0.2

Biphenyl, 1,1- 0.5 17000.1 10.2 0.520.4 1300.5 4000.2 0.22 18002 18002 18002 (6400) 1400

0.1 5800.2 68






Fluorene

Pyrene

Naphthalene

Fluoranthene


Benzo(a)anthracene

Parameters

Phenanthrene



Chrysene


MW11-2 MW11-2 MW11-2 MW11-2 MW-12 MW-12MW11-2 Dup-4 Average RPD MW-12 MW-12

1134058-08 1134058-09 % B10-08909-1 1022196-0708/15/11 08/15/11 08/15/11 08/15/11 04/08/10 05/28/1008/22/11 08/22/11 04/15/10 06/03/10< 0.05 < 0.05 < 0.05 - < 0.06 < 0.05< 0.05 < 0.05 < 0.05 - < 0.06 < 0.05< 0.01 < 0.01 < 0.01 - < 0.06 < 0.01< 0.01 < 0.01 < 0.01 - 0.08 < 0.01< 0.01 < 0.01 < 0.01 - 0.08 < 0.01< 0.05 < 0.05 < 0.05 - 0.11 < 0.05< 0.05 < 0.05 < 0.05 - < 0.06 < 0.05< 0.05 < 0.05 < 0.05 - < 0.06 < 0.05< 0.05 < 0.05 < 0.05 - - < 0.05< 0.05 < 0.05 < 0.05 - 0.07 < 0.05< 0.05 < 0.05 < 0.05 - < 0.06 < 0.05< 0.01 < 0.01 < 0.01 - 0.11 < 0.01< 0.05 < 0.05 < 0.05 - < 0.06 < 0.05< 0.05 < 0.05 < 0.05 - 0.06 < 0.05< 0.05 < 0.05 < 0.05 - < 0.06 < 0.05< 0.05 < 0.05 < 0.05 - < 0.06 < 0.05< 0.10 < 0.10 < 0.10 - < 0.12 < 0.1< 0.05 < 0.05 < 0.05 - < 0.06 < 0.05< 0.05 < 0.05 < 0.05 - 0.06 < 0.05< 0.01 < 0.01 < 0.01 - 0.1 < 0.01


Table 4Summary of Heavy Metals Ground Water Analyses - Eastern Landfill and Vicinity


Sample Location MW10-11 MW10-11 MW10-12 MW10-12 MW10-13 MW10-13 MW10-18 MW10-18Sample No. MW10-11 MW10-11 MW10-12 MW10-12 MW10-13 MW10-13 MW10-18 MW10-18

Laboratory ID Non-Potable B10-07462-7 1022196-03 B10-07462-5 1022188-07 B10-07462-3 1022188-08 B10-07462-4 1022188-10Sample Date (mm/dd/yy) Ground Water 3/24/2010 5/28/2010 3/24/2010 5/27/2010 3/24/2010 5/27/2010 3/24/2010 5/27/2010

Date of Analysis (mm/dd/yy) (Table 3) 4/7/20101 5/31/20102 4/7/20101 6/7/2010 4/7/20101 6/7/2010 4/7/20101 6/7/20100.5 20000 0.2 < 1 0.2 < 1 0.1 < 1 < 0.1 < 11 1900 0.2 < 10 0.7 < 10 1.4 < 10 0.8 < 102 29000 151 179 418 515 73 85 283 265

0.5 67 < 2 < 1 < 2 < 1 < 2 < 1 < 2 < 110 45000 16 < 50 39 51 24 < 50 35 630.5 2.7 < 0.02 < 1 < 0.02 < 1 < 0.02 < 1 < 0.02 < 110 810 < 2 < 50 < 2 < 50 4 59 < 2 < 5010 140 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 101 66 3.9 < 5 3.1 < 5 3.7 < 5 6.7 < 55 87 < 2 < 5 < 2 < 5 < 2 < 5 < 2 < 51 25 0.05 < 1 < 0.02 < 1 0.1 < 1 0.03 < 1

0.1 (2.8) 0.29 < 0.02 < 0.1 < 0.02 < 0.1 < 0.02 < 0.1 < 0.02 < 0.10.5 9200 < 10 < 5 < 10 < 5 < 10 < 5 < 10 < 51 490 < 10 6 < 10 < 5 < 10 < 5 < 10 65 63 < 1 < 5 < 1 < 5 < 1 < 5 < 1 < 5

0.3 1.5 < 0.02 < 1 < 0.02 < 1 < 0.02 < 1 < 0.02 < 10.5 510 < 0.05 < 1 < 0.05 < 1 < 0.05 < 1 < 0.05 < 12 420 - - - -

0.5 250 < 5 < 10 < 5 < 10 6 12 < 5 < 105 1100 < 5 < 20 < 5 < 20 5 < 20 < 5 < 20

Notes:

2 = Chromium (vi) analysed 6/2/10.3 = Chromium (vi) analysed 8/17/11, Mercury analysed 8/18/11.4 = Mercury analysed 8/22/11.

1 = Barium, Beryllium, Boron, Chromium, Copper, Molybdenum, Nickel, Vanadium and Zinc analysed 3/25/10 and Chromium (vi) analysed 4/8/10.

Antimony

Parameters

Selenium

Boron

Lead Mercury*

*Analysis for Methyl Mercury Only Applies When Mercury (Total) Standard is Exceeded.

Arsenic Barium

Thallium

Vanadium Zinc

Uranium

Beryllium

Chromium (VI)

Silver

Nickel


Cobalt Copper

Molybdenum

Cadmium Chromium


Table 4Summary of Heavy Metals Ground Water Analyses - East




Date of Analysis (mm/dd/yy) (Table 3)0.5 200001 19002 29000

0.5 6710 450000.5 2.710 81010 1401 665 871 25

0.1 (2.8) 0.290.5 92001 4905 63

0.3 1.50.5 5102 420

0.5 2505 1100

Notes:

2 = Chromium (vi) analysed 6/2/10.3 = Chromium (vi) analysed 8/17/11, Mercury analysed 8/18/11.4 = Mercury analysed 8/22/11.

1 = Barium, Beryllium, Boron, Chromium, Copper, Molybdenum, Nickel, Vanadium and Zinc analysed 3/25/10 and Chromium (vi) analysed 4/8/10.

Antimony

Parameters

Selenium

Boron

Lead Mercury*

*Analysis for Methyl Mercury Only Applies When Mercury (Total) Standard is Exceeded.

Arsenic Barium

Thallium

Vanadium Zinc

Uranium

Beryllium

Chromium (VI)

Silver

Nickel


Cobalt Copper

Molybdenum

Cadmium Chromium

MW10-29 MW11-1 MW11-2 MW11-2 MW11-2 MW11-2MW10-29 MW11-1 MW11-2 Dup-4 Average RPD

1022196-06 1133284-04 1134058-08 1134058-09 %5/28/2010 08/11/11 08/15/11 08/15/11 08/15/11 08/15/115/31/20102 8/16/20113 8/17/20114 8/17/20114

< 1 < 0.5 < 1 < 1 < 1< 10 < 1 < 10 < 10 < 10 -139 83 85 88 86.5 3.5< 1 < 0.5 < 1 < 1 < 1 -< 50 25 < 50 < 50 < 50 -< 1 < 0.1 < 1 < 1 < 1 -< 50 4 < 50 < 50 < 50 -< 10 < 10 < 10 < 10 < 1 -< 5 < 0.5 < 1 < 1 < 1 -< 5 1 < 5 6 5.5 -< 1 < 0.1 < 1 < 1 < 0.1 -

< 0.1 < 0.1 < 0.1 < 0.1 < 0.1 -5 1 < 5 < 5 < 5 -

< 5 2 < 5 < 5 < 5 -< 5 1 < 5 < 5 < 5 -< 1 < 0.1 < 1 < 1 < 1 -< 1 < 0.1 < 1 < 1 < 1 -- 0.7 < 5 < 5 < 5 -

< 10 4.5 2 2 2 -< 20 < 10 < 20 < 20 < 20 -


Table 5Summary of Volatile Organic Compounds Ground Water Analyses - Eastern Landfill and Vicinity


Sample Location MW10-10 MW10-10 MW10-10 MW10-10 MW10-10 MW10-10 MW10-11 MW10-11 MW10-11 MW10-12 MW10-12Sample No. MW10-10 MW10-10 MW10-10 Dup-1 Average RPD MW10-11 MW10-11 MW10-11 MW10-12 MW10-12

Laboratory ID Non-Potable B10-07066-2 1022188-06 1133284-09 1133284-11 % B10-07462-7 1022196-03 1133284-07 B10-07462-5 1022188-07Sample Date (mm/dd/yy) Ground Water 03/22/10 05/27/10 08/11/11 08/11/11 08/11/11 08/11/11 03/24/10 05/28/10 08/11/11 03/24/10 05/27/10

Date of Analysis (mm/dd/yy) (Table 3) 06/04/10 08/18/11 08/18/11 05/27/10 06/05/10 08/18/11 05/27/10 06/04/1030 130000 - - < 5.0 < 5.0 < 5.0 - - - < 5.0 - -0.5 (430) 44 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5 < 0.5 < 0.52.00 85000 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 - 0.8 < 0.4 < 0.5 < 0.4 < 0.45.00 (770) 380 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.5 < 0.50.5 (56) 5.6 < 0.3 < 0.7 < 0.5 < 0.5 < 0.5 - < 0.3 < 0.7 < 0.5 < 0.7 < 0.70.2 (8.4) 0.79 < 0.2 < 0.5 < 0.2 < 0.2 < 0.2 - < 0.2 < 0.5 < 0.2 < 0.5 < 0.50.5 630 < 0.2 <4.0 < 0.5 < 0.5 < 0.5 - < 0.2 < 0.4 < 0.5 < 0.2 < 0.4

Chloroethane - - - - < 1.0 < 1.0 < 1.0 - - - < 1.0 - -1.00 (22) 2.4 5.9 5.1 2 2 2 - 18.1 8.8 < 0.5 < 0.3 < 0.5

Chloromethane - - - - < 3.0 < 3.0 < 3.0 - - - < 3.0 - -0.01 82000 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.1 < 0.5

Dichlorodifluoromethane 2.00 4400 - - < 1.0 < 1.0 < 1.0 - - - < 1.0 - -0.2 (0.83) 0.25 < 0.1 < 1.0 < 0.2 < 0.2 < 0.2 - < 0.1 < 1.0 < 0.2 < 0.1 < 1.00.05 (9600) 4600 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.1 < 0.40.2 9600 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.1 < 0.42 (67) 8 < 0.2 < 0.4 < 0.5 < 0.5 < 0.5 - < 0.2 < 0.4 < 0.5 < 0.2 < 0.4

0.5 (3100) 320 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.1 < 0.50.5 (12) 1.6 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.1 < 0.50.5 (17) 1.6 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.1 < 0.50.5 (17) 1.6 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.1 < 0.40.5 (17) 1.6 < 0.1 < 1.0 < 0.5 < 0.5 < 0.5 - < 0.1 < 1.0 < 0.5 < 0.1 < 1.00.50 (140) 16 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.1 < 0.5

- (45) 5.2 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.1 < 0.4- (45) 5.2 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.1 < 0.5

0.5 (45) 5.2 - - < 0.5 < 0.5 < 0.5 - - - < 0.5 - -0.5 2300 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5

Hexane 5 (520) 51 - - < 1.0 < 1.0 < 1.0 - - - < 1.0 - -20 (1500000) 470000 - - < 5.0 < 5.0 < 5.0 - - - < 5.0 - -- - - - < 10.0 < 10.0 < 10.0 - - - < 10.0 - -

20 (580000) 140000 - - < 5.0 < 5.0 < 5.0 - - - < 5.0 - -2 (1400) 190 - - < 2.0 < 2.0 < 2.0 - - - < 2.0 - -

2.0 (5500) 610 < 0.3 <4.0 < 5.0 < 5.0 < 5.0 - < 0.3 <4.0 < 5.0 < 0.3 <4.02 (6400) 1400 < 0.7 ‐ - - - - < 0.7 ‐ - < 0.7 ‐

0.5 (9100) 1300 < 0.5 < 0.4 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.4 < 0.5 < 0.5 < 0.40.50 (28) 3.4 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.1 < 0.50.5 (15) 3.2 < 0.4 < 0.6 < 0.5 < 0.5 < 0.5 - < 0.4 < 0.6 < 0.5 < 0.4 < 0.60.5 (17) 1.6 < 0.2 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.2 < 0.5 < 0.5 < 0.2 < 0.50.5 18000 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5 < 0.5 < 0.50.1 (850) 180 < 0.2 ‐ < 0.5 < 0.5 < 0.5 - < 0.2 ‐ < 0.5 < 0.2 ‐0.5 (6700) 640 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 - 0.2 < 0.4 < 0.5 < 0.1 < 0.40.5 (30) 4.7 < 0.1 < 0.6 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.6 < 0.5 < 0.1 < 0.60.5 (17) 1.6 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.1 < 0.45.0 2500 - - < 1.0 < 1.0 < 1.0 - - - < 1.0 - -- - - - < 0.5 < 0.5 < 0.5 - - - < 0.5 - -

0.5 (1.7) 0.5 < 0.2 < 0.4 < 0.5 < 0.5 < 0.5 - < 0.2 < 0.4 < 0.5 < 0.2 < 0.4 Xylenes, m,p- - 4200 < 1.0 < 0.5 < 0.5 < 0.5 < 0.5 - < 1.0 < 0.5 < 0.5 < 1.0 < 0.5 Xylenes, o- - 4200 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5

0.5 4200 < 1.5 < 1.0 < 0.5 < 0.5 < 0.5 - < 1.5 < 1.0 < 0.5 < 1.5 < 1.0


Tetrachloroethane, 1,1,2,2-

Chlorobenzene

Ethylbenzene

Dichloroethylene, cis-1,2- (c-1,2-DCE)


Dichloropropene, 1,3- (Total)

Naphthalene

Methyl Butyl Ketone (2-Hexanone) Methyl Isobutyl Ketone Methyl tert-butyl ether Methylene Chloride (Dichloromethane)

Dichloroethylene, 1,1- (1,1-DCE)

Methyl Ethyl Ketone (2-Butanone)

Dichloropropene, trans-1,3-

Dichlorobenzene, 1,4- (p-DCB) Dichloroethane, 1,1- (1,1-DCA) Dichloroethane, 1,2- (1,2-DCA)

Styrene

Dichloroethylene, trans-1,2- (t-1,2-DCE)

Dibromoethane, 1,2- (Ethylene Dibromide) Dichlorobenzene, 1,2- (o-DCB)

Dichloropropane, 1,2- Dichloropropene, cis-1,3-

Vinyl Chloride

Xylenes (total)

Trichloroethane, 1,1,2- (1,1,2-TCA) Trichloroethylene (TCE)

Tetrachloroethylene (PCE) Toluene

1,3,5-Trimethylbenzene

Trichlorobenzene, 1,2,4- Trichloroethane, 1,1,1- (1,1,1-TCA)

Trichlorofluoromethane

Dichlorobenzene, 1,3- (m-DCB)

Parameters

Carbon Tetrachloride

Chloroform

Benzene Bromodichloromethane Bromoform Bromomethane

Dibromochloromethane

Acetone


Table 5Summary of Volatile Organic Compounds Ground Water Analyses -




Date of Analysis (mm/dd/yy) (Table 3)30 1300000.5 (430) 442.00 850005.00 (770) 3800.5 (56) 5.60.2 (8.4) 0.790.5 630

Chloroethane - -1.00 (22) 2.4

Chloromethane - -0.01 82000

Dichlorodifluoromethane 2.00 44000.2 (0.83) 0.250.05 (9600) 46000.2 96002 (67) 8

0.5 (3100) 3200.5 (12) 1.60.5 (17) 1.60.5 (17) 1.60.5 (17) 1.60.50 (140) 16

- (45) 5.2- (45) 5.2

0.5 (45) 5.20.5 2300

Hexane 5 (520) 5120 (1500000) 470000- -

20 (580000) 1400002 (1400) 190

2.0 (5500) 6102 (6400) 1400

0.5 (9100) 13000.50 (28) 3.40.5 (15) 3.20.5 (17) 1.60.5 180000.1 (850) 1800.5 (6700) 6400.5 (30) 4.70.5 (17) 1.65.0 2500- -

0.5 (1.7) 0.5 Xylenes, m,p- - 4200 Xylenes, o- - 4200

0.5 4200



Chlorobenzene

Ethylbenzene




Naphthalene






Styrene




Vinyl Chloride

Xylenes (total)







Parameters


Chloroform



Acetone

MW10-12 MW10-12 MW10-12 MW10-12 MW10-13 MW10-13 MW10-13 MW10-16 MW10-16 MW10-16 MW10-16MW10-12 Dup-2 Average RPD MW10-13 MW10-13 MW10-13 MW10-16 Dup-1 Average RPD

1134051-09 1134051-13 % B10-07462-3 1022188-08 1134051-02 1022099-10 1022099-11 %08/12/11 08/12/11 08/12/11 08/12/11 03/24/10 05/27/10 08/12/11 05/26/10 05/26/10 05/26/10 05/26/1008/19/11 08/19/11 05/27/10 06/04/10 08/19/11 06/01/10 06/01/10

< 5.0 < 5.0 < 5.0 - - - < 5.0 - - - -< 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - < 0.3 < 0.7 < 0.5 < 0.7 < 0.7 < 0.7 -< 0.2 < 0.2 < 0.2 - < 0.2 < 0.5 < 0.2 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - < 0.2 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 -< 1.0 < 1.0 < 1.0 - - - < 1.0 - - - -< 0.5 < 0.5 < 0.5 - < 0.3 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 3.0 < 3.0 < 3.0 - - - < 3.0 - - - -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 1.0 < 1.0 < 1.0 - - - < 1.0 - - - -< 0.2 < 0.2 < 0.2 - < 0.1 < 1.0 < 0.2 < 1.0 < 1.0 < 1.0 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 -< 0.5 < 0.5 < 0.5 - < 0.2 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.4 < 0.4 < 0.4 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 -< 0.5 < 0.5 < 0.5 - < 0.1 < 1.0 < 0.5 < 1.0 < 1.0 < 1.0 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - - - < 0.5 - - - -< 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 1.0 < 1.0 < 1.0 - - - < 1.0 - - - -< 5.0 < 5.0 < 5.0 - - - < 5.0 - - - -< 10.0 < 10.0 < 10.0 - - - < 10.0 - - - -< 5.0 < 5.0 < 5.0 - - - < 5.0 - - - -< 2.0 < 2.0 < 2.0 - - - < 2.0 - - - -< 5.0 < 5.0 < 5.0 - < 0.3 <4.0 < 5.0 <4.0 <4.0 <4.0 -

- - - - < 0.7 ‐ - ‐ ‐ ‐ -< 0.5 < 0.5 < 0.5 - < 0.5 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - < 0.4 < 0.6 < 0.5 < 0.6 < 0.6 < 0.6 -< 0.5 < 0.5 < 0.5 - < 0.2 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - < 0.2 ‐ < 0.5 ‐ ‐ ‐ -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.6 < 0.5 < 0.6 < 0.6 < 0.6 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 -< 1.0 < 1.0 < 1.0 - - - < 1.0 - - - -< 0.5 < 0.5 < 0.5 - - - < 0.5 - - - -< 0.5 < 0.5 < 0.5 - < 0.2 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 -< 0.5 < 0.5 < 0.5 - < 1.0 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - < 1.5 < 1.0 < 0.5 < 1.0 < 1.0 < 1.0 -










0.5 (3100) 3200.5 (12) 1.60.5 (17) 1.60.5 (17) 1.60.5 (17) 1.60.50 (140) 16

- (45) 5.2- (45) 5.2

0.5 (45) 5.20.5 2300

Hexane 5 (520) 5120 (1500000) 470000- -

20 (580000) 1400002 (1400) 190

2.0 (5500) 6102 (6400) 1400

0.5 (9100) 13000.50 (28) 3.40.5 (15) 3.20.5 (17) 1.60.5 180000.1 (850) 1800.5 (6700) 6400.5 (30) 4.70.5 (17) 1.65.0 2500- -


0.5 4200



Chlorobenzene

Ethylbenzene




Naphthalene






Styrene




Vinyl Chloride

Xylenes (total)







Parameters


Chloroform



Acetone

MW10-17 MW10-17 MW10-18 MW10-18 MW10-28 MW10-28 MW10-28 MW10-28 MW10-28 MW10-29 MW10-29MW10-17 MW10-17 MW10-18 MW10-18 MW10-28 Dup-2 Average RPD MW10-28 MW10-29 MW10-29

1022188-09 1133284-01 B10-07462-4 1022188-10 1022188-13 1022188-14 % 1133284-02 B10-07513-4 1022196-0605/27/10 08/11/11 03/24/10 05/27/10 05/27/10 05/27/10 05/27/10 05/26/10 08/11/11 03/25/10 05/28/1006/04/10 08/18/11 05/27/10 06/04/10 06/04/10 06/04/10 08/18/11 03/27/10 06/05/10

- < 5.0 - - - - - - < 5.0 - -< 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5< 0.4 < 0.5 < 0.1 < 0.4 < 0.4 < 0.4 < 0.4 - < 0.5 0.7 < 0.4< 0.5 < 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.1 < 0.5< 0.7 < 0.5 < 0.3 < 0.7 < 0.7 < 0.7 < 0.7 - < 0.5 < 0.3 < 0.7< 0.5 < 0.2 < 0.2 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.2 < 0.2 < 0.5< 0.4 < 0.5 < 0.2 < 0.4 < 0.4 < 0.4 < 0.4 - < 0.5 < 0.2 < 0.4

- < 1.0 - - - - - - < 1.0 - -< 0.5 < 0.5 < 0.3 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 15.3 < 0.5

- < 3.0 - - - - - - < 3.0 - -< 0.5 < 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.1 < 0.5

- < 1.0 - - - - - - < 1.0 - -< 1.0 < 0.2 < 0.1 < 1.0 < 1.0 < 1.0 < 1.0 - < 0.2 < 0.1 < 1.0< 0.4 < 0.5 < 0.1 < 0.4 < 0.4 < 0.4 < 0.4 - < 0.5 < 0.1 < 0.4< 0.4 < 0.5 < 0.1 < 0.4 < 0.4 < 0.4 < 0.4 - < 0.5 < 0.1 < 0.4< 0.4 < 0.5 < 0.2 < 0.4 < 0.4 < 0.4 < 0.4 - < 0.5 < 0.2 < 0.4< 0.5 < 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.1 < 0.5< 0.5 < 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.1 < 0.5< 0.5 < 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.1 < 0.5< 0.4 < 0.5 < 0.1 < 0.4 < 0.4 < 0.4 < 0.4 - < 0.5 < 0.1 < 0.4< 1.0 < 0.5 < 0.1 < 1.0 < 1.0 < 1.0 < 1.0 - < 0.5 < 0.1 < 1.0< 0.5 < 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.1 < 0.5< 0.4 < 0.5 < 0.1 < 0.4 < 0.4 < 0.4 < 0.4 - < 0.5 < 0.1 < 0.4< 0.5 < 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.1 < 0.5

- < 0.5 - - - - - - < 0.5 - -< 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5

- < 1.0 - - - - - - < 1.0 - -- < 5.0 - - - - - - < 5.0 - -- < 10.0 - - - - - - < 10.0 - -- < 5.0 - - - - - - < 5.0 - -- < 2.0 - - - - - - < 2.0 - -

<4.0 < 5.0 < 0.3 <4.0 <4.0 <4.0 <4.0 - < 5.0 < 0.3 <4.0‐ - < 0.7 ‐ ‐ ‐ ‐ - - < 0.7 ‐

< 0.4 < 0.5 < 0.5 < 0.4 < 0.4 < 0.4 < 0.4 - < 0.5 < 0.5 < 0.4< 0.5 < 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.1 < 0.5< 0.6 < 0.5 < 0.4 < 0.6 < 0.6 < 0.6 < 0.6 - < 0.5 < 0.4 < 0.6< 0.5 < 0.5 < 0.2 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.2 < 0.5< 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5‐ < 0.5 < 0.2 ‐ ‐ ‐ ‐ - < 0.5 < 0.2 ‐

< 0.4 < 0.5 < 0.1 < 0.4 < 0.4 < 0.4 < 0.4 - < 0.5 < 0.1 < 0.4< 0.6 < 0.5 < 0.1 < 0.6 < 0.6 < 0.6 < 0.6 - < 0.5 < 0.1 < 0.6< 0.4 < 0.5 < 0.1 < 0.4 < 0.4 < 0.4 < 0.4 - < 0.5 < 0.1 < 0.4

- < 1.0 - - - - - - < 1.0 - -- < 0.5 - - - - - - < 0.5 - -

< 0.4 < 0.5 < 0.2 < 0.4 < 0.4 < 0.4 < 0.4 - < 0.5 < 0.2 < 0.4< 0.5 < 0.5 < 1.0 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 1.0 < 0.5< 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5< 1.0 < 0.5 < 1.5 < 1.0 < 1.0 < 1.0 < 1.0 - < 0.5 < 1.5 < 1.0










0.5 (3100) 3200.5 (12) 1.60.5 (17) 1.60.5 (17) 1.60.5 (17) 1.60.50 (140) 16

- (45) 5.2- (45) 5.2

0.5 (45) 5.20.5 2300

Hexane 5 (520) 5120 (1500000) 470000- -

20 (580000) 1400002 (1400) 190

2.0 (5500) 6102 (6400) 1400

0.5 (9100) 13000.50 (28) 3.40.5 (15) 3.20.5 (17) 1.60.5 180000.1 (850) 1800.5 (6700) 6400.5 (30) 4.70.5 (17) 1.65.0 2500- -


0.5 4200



Chlorobenzene

Ethylbenzene




Naphthalene






Styrene




Vinyl Chloride

Xylenes (total)







Parameters


Chloroform



Acetone

MW10-29 MW-12 MW-12 MW12 MW11-1 MW11-2 MW11-2 MW11-2 MW11-2MW10-29 MW-12 MW-12 MW12 MW11-1 MW11-2 Dup-4 Average RPD

1133284-03 B10-08909-1 1022196-07 1134051-08 1133284-04 1134058-08 1134058-09 %08/11/11 04/08/10 05/28/10 08/12/11 08/11/11 08/15/11 08/15/11 08/15/11 08/15/1108/18/11 04/12/10 06/05/10 08/19/11 08/18/11 08/22/11 08/22/11

< 5.0 - - < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 -< 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.3 < 0.7 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.2 < 0.2 < 0.5 < 0.2 < 0.2 < 0.2 < 0.2 < 0.2 -< 0.5 < 0.2 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 1.0 - - < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 -2.1 < 0.3 < 0.5 < 0.5 1.3 1.4 1.4 1.4 -

< 3.0 - - < 3.0 < 3.0 < 3.0 < 3.0 < 3.0 -< 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 1.0 - - < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 -< 0.2 < 0.1 < 1.0 < 0.2 < 0.2 < 0.2 < 0.2 < 0.2 -< 0.5 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.2 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 1.0 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 - - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 1.0 - - < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 -< 5.0 - - < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 -< 10.0 - - < 10.0 < 10.0 < 10.0 < 10.0 < 10.0 -< 5.0 - - < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 -< 2.0 - - < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 -< 5.0 < 0.3 <4.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 -

- < 0.7 ‐ - - - - - -< 0.5 < 0.5 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.4 < 0.6 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.2 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.2 ‐ < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.6 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 1.0 - - < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 -< 0.5 - - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.2 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 1.0 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 1.5 < 1.0 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -


Table 5Summary of Volatile Organic Compounds Ground Water Analyses - Eastern Landfill and Vicinity


Sample Location MW10-10 MW10-10 MW10-10 MW10-10 MW10-10 MW10-10 MW10-11 MW10-11 MW10-11 MW10-12 MW10-12Sample No. MW10-10 MW10-10 MW10-10 Dup-1 Average RPD MW10-11 MW10-11 MW10-11 MW10-12 MW10-12

Laboratory ID Non-Potable B10-07066-2 1022188-06 1133284-09 1133284-11 % B10-07462-7 1022196-03 1133284-07 B10-07462-5 1022188-07Sample Date (mm/dd/yy) Ground Water 03/22/10 05/27/10 08/11/11 08/11/11 08/11/11 08/11/11 03/24/10 05/28/10 08/11/11 03/24/10 05/27/10

Date of Analysis (mm/dd/yy) (Table 3) 06/04/10 08/18/11 08/18/11 05/27/10 06/05/10 08/18/11 05/27/10 06/04/1030 130000 - - < 5.0 < 5.0 < 5.0 - - - < 5.0 - -0.5 (430) 44 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5 < 0.5 < 0.52.00 85000 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 - 0.8 < 0.4 < 0.5 < 0.4 < 0.45.00 (770) 380 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.5 < 0.50.5 (56) 5.6 < 0.3 < 0.7 < 0.5 < 0.5 < 0.5 - < 0.3 < 0.7 < 0.5 < 0.7 < 0.70.2 (8.4) 0.79 < 0.2 < 0.5 < 0.2 < 0.2 < 0.2 - < 0.2 < 0.5 < 0.2 < 0.5 < 0.50.5 630 < 0.2 <4.0 < 0.5 < 0.5 < 0.5 - < 0.2 < 0.4 < 0.5 < 0.2 < 0.4

Chloroethane - - - - < 1.0 < 1.0 < 1.0 - - - < 1.0 - -1.00 (22) 2.4 5.9 5.1 2 2 2 - 18.1 8.8 < 0.5 < 0.3 < 0.5

Chloromethane - - - - < 3.0 < 3.0 < 3.0 - - - < 3.0 - -0.01 82000 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.1 < 0.5

Dichlorodifluoromethane 2.00 4400 - - < 1.0 < 1.0 < 1.0 - - - < 1.0 - -0.2 (0.83) 0.25 < 0.1 < 1.0 < 0.2 < 0.2 < 0.2 - < 0.1 < 1.0 < 0.2 < 0.1 < 1.00.05 (9600) 4600 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.1 < 0.40.2 9600 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.1 < 0.42 (67) 8 < 0.2 < 0.4 < 0.5 < 0.5 < 0.5 - < 0.2 < 0.4 < 0.5 < 0.2 < 0.4

0.5 (3100) 320 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.1 < 0.50.5 (12) 1.6 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.1 < 0.50.5 (17) 1.6 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.1 < 0.50.5 (17) 1.6 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.1 < 0.40.5 (17) 1.6 < 0.1 < 1.0 < 0.5 < 0.5 < 0.5 - < 0.1 < 1.0 < 0.5 < 0.1 < 1.00.50 (140) 16 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.1 < 0.5

- (45) 5.2 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.1 < 0.4- (45) 5.2 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.1 < 0.5

0.5 (45) 5.2 - - < 0.5 < 0.5 < 0.5 - - - < 0.5 - -0.5 2300 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5

Hexane 5 (520) 51 - - < 1.0 < 1.0 < 1.0 - - - < 1.0 - -20 (1500000) 470000 - - < 5.0 < 5.0 < 5.0 - - - < 5.0 - -- - - - < 10.0 < 10.0 < 10.0 - - - < 10.0 - -

20 (580000) 140000 - - < 5.0 < 5.0 < 5.0 - - - < 5.0 - -2 (1400) 190 - - < 2.0 < 2.0 < 2.0 - - - < 2.0 - -

2.0 (5500) 610 < 0.3 <4.0 < 5.0 < 5.0 < 5.0 - < 0.3 <4.0 < 5.0 < 0.3 <4.02 (6400) 1400 < 0.7 ‐ - - - - < 0.7 ‐ - < 0.7 ‐

0.5 (9100) 1300 < 0.5 < 0.4 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.4 < 0.5 < 0.5 < 0.40.50 (28) 3.4 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.1 < 0.50.5 (15) 3.2 < 0.4 < 0.6 < 0.5 < 0.5 < 0.5 - < 0.4 < 0.6 < 0.5 < 0.4 < 0.60.5 (17) 1.6 < 0.2 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.2 < 0.5 < 0.5 < 0.2 < 0.50.5 18000 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5 < 0.5 < 0.50.1 (850) 180 < 0.2 ‐ < 0.5 < 0.5 < 0.5 - < 0.2 ‐ < 0.5 < 0.2 ‐0.5 (6700) 640 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 - 0.2 < 0.4 < 0.5 < 0.1 < 0.40.5 (30) 4.7 < 0.1 < 0.6 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.6 < 0.5 < 0.1 < 0.60.5 (17) 1.6 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.1 < 0.45.0 2500 - - < 1.0 < 1.0 < 1.0 - - - < 1.0 - -- - - - < 0.5 < 0.5 < 0.5 - - - < 0.5 - -

0.5 (1.7) 0.5 < 0.2 < 0.4 < 0.5 < 0.5 < 0.5 - < 0.2 < 0.4 < 0.5 < 0.2 < 0.4 Xylenes, m,p- - 4200 < 1.0 < 0.5 < 0.5 < 0.5 < 0.5 - < 1.0 < 0.5 < 0.5 < 1.0 < 0.5 Xylenes, o- - 4200 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5

0.5 4200 < 1.5 < 1.0 < 0.5 < 0.5 < 0.5 - < 1.5 < 1.0 < 0.5 < 1.5 < 1.0


Acetone

Parameters


Chloroform


Vinyl Chloride

Xylenes (total)






Dichloroethane, 1,1- (1,1-DCA) Dichloroethane, 1,2- (1,2-DCA)

Styrene







Chlorobenzene

Ethylbenzene




Naphthalene





Dichlorobenzene, 1,4- (p-DCB)










0.5 (3100) 3200.5 (12) 1.60.5 (17) 1.60.5 (17) 1.60.5 (17) 1.60.50 (140) 16

- (45) 5.2- (45) 5.2

0.5 (45) 5.20.5 2300

Hexane 5 (520) 5120 (1500000) 470000- -

20 (580000) 1400002 (1400) 190

2.0 (5500) 6102 (6400) 1400

0.5 (9100) 13000.50 (28) 3.40.5 (15) 3.20.5 (17) 1.60.5 180000.1 (850) 1800.5 (6700) 6400.5 (30) 4.70.5 (17) 1.65.0 2500- -


0.5 4200


Acetone

Parameters


Chloroform


Vinyl Chloride

Xylenes (total)







Styrene







Chlorobenzene

Ethylbenzene




Naphthalene






MW10-12 MW10-12 MW10-12 MW10-12 MW10-13 MW10-13 MW10-13 MW10-16 MW10-16 MW10-16 MW10-16MW10-12 Dup-2 Average RPD MW10-13 MW10-13 MW10-13 MW10-16 Dup-1 Average RPD

1134051-09 1134051-13 % B10-07462-3 1022188-08 1134051-02 1022099-10 1022099-11 %08/12/11 08/12/11 08/12/11 08/12/11 03/24/10 05/27/10 08/12/11 05/26/10 05/26/10 05/26/10 05/26/1008/19/11 08/19/11 05/27/10 06/04/10 08/19/11 06/01/10 06/01/10

< 5.0 < 5.0 < 5.0 - - - < 5.0 - - - -< 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - < 0.3 < 0.7 < 0.5 < 0.7 < 0.7 < 0.7 -< 0.2 < 0.2 < 0.2 - < 0.2 < 0.5 < 0.2 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - < 0.2 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 -< 1.0 < 1.0 < 1.0 - - - < 1.0 - - - -< 0.5 < 0.5 < 0.5 - < 0.3 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 3.0 < 3.0 < 3.0 - - - < 3.0 - - - -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 1.0 < 1.0 < 1.0 - - - < 1.0 - - - -< 0.2 < 0.2 < 0.2 - < 0.1 < 1.0 < 0.2 < 1.0 < 1.0 < 1.0 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 -< 0.5 < 0.5 < 0.5 - < 0.2 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.4 < 0.4 < 0.4 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 -< 0.5 < 0.5 < 0.5 - < 0.1 < 1.0 < 0.5 < 1.0 < 1.0 < 1.0 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - - - < 0.5 - - - -< 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 1.0 < 1.0 < 1.0 - - - < 1.0 - - - -< 5.0 < 5.0 < 5.0 - - - < 5.0 - - - -< 10.0 < 10.0 < 10.0 - - - < 10.0 - - - -< 5.0 < 5.0 < 5.0 - - - < 5.0 - - - -< 2.0 < 2.0 < 2.0 - - - < 2.0 - - - -< 5.0 < 5.0 < 5.0 - < 0.3 <4.0 < 5.0 <4.0 <4.0 <4.0 -

- - - - < 0.7 ‐ - ‐ ‐ ‐ -< 0.5 < 0.5 < 0.5 - < 0.5 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - < 0.4 < 0.6 < 0.5 < 0.6 < 0.6 < 0.6 -< 0.5 < 0.5 < 0.5 - < 0.2 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - < 0.2 ‐ < 0.5 ‐ ‐ ‐ -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.6 < 0.5 < 0.6 < 0.6 < 0.6 -< 0.5 < 0.5 < 0.5 - < 0.1 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 -< 1.0 < 1.0 < 1.0 - - - < 1.0 - - - -< 0.5 < 0.5 < 0.5 - - - < 0.5 - - - -< 0.5 < 0.5 < 0.5 - < 0.2 < 0.4 < 0.5 < 0.4 < 0.4 < 0.4 -< 0.5 < 0.5 < 0.5 - < 1.0 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 - < 1.5 < 1.0 < 0.5 < 1.0 < 1.0 < 1.0 -










0.5 (3100) 3200.5 (12) 1.60.5 (17) 1.60.5 (17) 1.60.5 (17) 1.60.50 (140) 16

- (45) 5.2- (45) 5.2

0.5 (45) 5.20.5 2300

Hexane 5 (520) 5120 (1500000) 470000- -

20 (580000) 1400002 (1400) 190

2.0 (5500) 6102 (6400) 1400

0.5 (9100) 13000.50 (28) 3.40.5 (15) 3.20.5 (17) 1.60.5 180000.1 (850) 1800.5 (6700) 6400.5 (30) 4.70.5 (17) 1.65.0 2500- -


0.5 4200


Acetone

Parameters


Chloroform


Vinyl Chloride

Xylenes (total)







Styrene







Chlorobenzene

Ethylbenzene




Naphthalene






MW10-17 MW10-17 MW10-18 MW10-18 MW10-28 MW10-28 MW10-28 MW10-28 MW10-28 MW10-29 MW10-29MW10-17 MW10-17 MW10-18 MW10-18 MW10-28 Dup-2 Average RPD MW10-28 MW10-29 MW10-29

1022188-09 1133284-01 B10-07462-4 1022188-10 1022188-13 1022188-14 % 1133284-02 B10-07513-4 1022196-0605/27/10 08/11/11 03/24/10 05/27/10 05/27/10 05/27/10 05/27/10 05/26/10 08/11/11 03/25/10 05/28/1006/04/10 08/18/11 05/27/10 06/04/10 06/04/10 06/04/10 08/18/11 03/27/10 06/05/10

- < 5.0 - - - - - - < 5.0 - -< 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5< 0.4 < 0.5 < 0.1 < 0.4 < 0.4 < 0.4 < 0.4 - < 0.5 0.7 < 0.4< 0.5 < 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.1 < 0.5< 0.7 < 0.5 < 0.3 < 0.7 < 0.7 < 0.7 < 0.7 - < 0.5 < 0.3 < 0.7< 0.5 < 0.2 < 0.2 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.2 < 0.2 < 0.5< 0.4 < 0.5 < 0.2 < 0.4 < 0.4 < 0.4 < 0.4 - < 0.5 < 0.2 < 0.4

- < 1.0 - - - - - - < 1.0 - -< 0.5 < 0.5 < 0.3 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 15.3 < 0.5

- < 3.0 - - - - - - < 3.0 - -< 0.5 < 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.1 < 0.5

- < 1.0 - - - - - - < 1.0 - -< 1.0 < 0.2 < 0.1 < 1.0 < 1.0 < 1.0 < 1.0 - < 0.2 < 0.1 < 1.0< 0.4 < 0.5 < 0.1 < 0.4 < 0.4 < 0.4 < 0.4 - < 0.5 < 0.1 < 0.4< 0.4 < 0.5 < 0.1 < 0.4 < 0.4 < 0.4 < 0.4 - < 0.5 < 0.1 < 0.4< 0.4 < 0.5 < 0.2 < 0.4 < 0.4 < 0.4 < 0.4 - < 0.5 < 0.2 < 0.4< 0.5 < 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.1 < 0.5< 0.5 < 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.1 < 0.5< 0.5 < 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.1 < 0.5< 0.4 < 0.5 < 0.1 < 0.4 < 0.4 < 0.4 < 0.4 - < 0.5 < 0.1 < 0.4< 1.0 < 0.5 < 0.1 < 1.0 < 1.0 < 1.0 < 1.0 - < 0.5 < 0.1 < 1.0< 0.5 < 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.1 < 0.5< 0.4 < 0.5 < 0.1 < 0.4 < 0.4 < 0.4 < 0.4 - < 0.5 < 0.1 < 0.4< 0.5 < 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.1 < 0.5

- < 0.5 - - - - - - < 0.5 - -< 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5

- < 1.0 - - - - - - < 1.0 - -- < 5.0 - - - - - - < 5.0 - -- < 10.0 - - - - - - < 10.0 - -- < 5.0 - - - - - - < 5.0 - -- < 2.0 - - - - - - < 2.0 - -

<4.0 < 5.0 < 0.3 <4.0 <4.0 <4.0 <4.0 - < 5.0 < 0.3 <4.0‐ - < 0.7 ‐ ‐ ‐ ‐ - - < 0.7 ‐

< 0.4 < 0.5 < 0.5 < 0.4 < 0.4 < 0.4 < 0.4 - < 0.5 < 0.5 < 0.4< 0.5 < 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.1 < 0.5< 0.6 < 0.5 < 0.4 < 0.6 < 0.6 < 0.6 < 0.6 - < 0.5 < 0.4 < 0.6< 0.5 < 0.5 < 0.2 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.2 < 0.5< 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5‐ < 0.5 < 0.2 ‐ ‐ ‐ ‐ - < 0.5 < 0.2 ‐

< 0.4 < 0.5 < 0.1 < 0.4 < 0.4 < 0.4 < 0.4 - < 0.5 < 0.1 < 0.4< 0.6 < 0.5 < 0.1 < 0.6 < 0.6 < 0.6 < 0.6 - < 0.5 < 0.1 < 0.6< 0.4 < 0.5 < 0.1 < 0.4 < 0.4 < 0.4 < 0.4 - < 0.5 < 0.1 < 0.4

- < 1.0 - - - - - - < 1.0 - -- < 0.5 - - - - - - < 0.5 - -

< 0.4 < 0.5 < 0.2 < 0.4 < 0.4 < 0.4 < 0.4 - < 0.5 < 0.2 < 0.4< 0.5 < 0.5 < 1.0 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 1.0 < 0.5< 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 - < 0.5 < 0.5 < 0.5< 1.0 < 0.5 < 1.5 < 1.0 < 1.0 < 1.0 < 1.0 - < 0.5 < 1.5 < 1.0










0.5 (3100) 3200.5 (12) 1.60.5 (17) 1.60.5 (17) 1.60.5 (17) 1.60.50 (140) 16

- (45) 5.2- (45) 5.2

0.5 (45) 5.20.5 2300

Hexane 5 (520) 5120 (1500000) 470000- -

20 (580000) 1400002 (1400) 190

2.0 (5500) 6102 (6400) 1400

0.5 (9100) 13000.50 (28) 3.40.5 (15) 3.20.5 (17) 1.60.5 180000.1 (850) 1800.5 (6700) 6400.5 (30) 4.70.5 (17) 1.65.0 2500- -


0.5 4200


Acetone

Parameters


Chloroform


Vinyl Chloride

Xylenes (total)







Styrene







Chlorobenzene

Ethylbenzene




Naphthalene






MW10-29 MW-12 MW-12 MW12 MW11-1 MW11-2 MW11-2 MW11-2 MW11-2MW10-29 MW-12 MW-12 MW12 MW11-1 MW11-2 Dup-4 Average RPD

1133284-03 B10-08909-1 1022196-07 1134051-08 1133284-04 1134058-08 1134058-09 %08/11/11 04/08/10 05/28/10 08/12/11 08/11/11 08/15/11 08/15/11 08/15/11 08/15/1108/18/11 04/12/10 06/05/10 08/19/11 08/18/11 08/22/11 08/22/11

< 5.0 - - < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 -< 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.3 < 0.7 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.2 < 0.2 < 0.5 < 0.2 < 0.2 < 0.2 < 0.2 < 0.2 -< 0.5 < 0.2 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 1.0 - - < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 -2.1 < 0.3 < 0.5 < 0.5 1.3 1.4 1.4 1.4 -

< 3.0 - - < 3.0 < 3.0 < 3.0 < 3.0 < 3.0 -< 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 1.0 - - < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 -< 0.2 < 0.1 < 1.0 < 0.2 < 0.2 < 0.2 < 0.2 < 0.2 -< 0.5 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.2 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 1.0 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 - - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 1.0 - - < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 -< 5.0 - - < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 -< 10.0 - - < 10.0 < 10.0 < 10.0 < 10.0 < 10.0 -< 5.0 - - < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 -< 2.0 - - < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 -< 5.0 < 0.3 <4.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 -

- < 0.7 ‐ - - - - - -< 0.5 < 0.5 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.4 < 0.6 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.2 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.2 ‐ < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.6 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.1 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 1.0 - - < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 -< 0.5 - - < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.2 < 0.4 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 1.0 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 1.5 < 1.0 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 -


Table 6Summary of Polychlorinated Biphenyls Ground Water Analyses - Eastern Landfill and Vicinity


Sample Location MW10-11 MW10-17 MW10-28 MW10-28 MW10-28 MW10-28Sample No. MW10-11 MW10-17 MW10-28 Dup 2 Average RPD

Laboratory ID Non-Potable 1022196-03 1022188-09 1022188-13 1022188-14 %Sample Date (mm/dd/yy) Ground Water 05/28/10 05/27/10 05/27/10 05/27/10 05/27/10 05/27/10

Date of Analysis (mm/dd/yy) (Table 3) 05/31/10 05/31/10 05/31/10 05/31/100.2 (15) 7.8 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 - Polychlorinated Biphenyls

ParametersFull Depth Generic Site

Condition Standards


Table 7Summary of General Chemistry Ground Water Analyses - Eastern Landfill and Vicinity


Sample Location MW10-10 MW10-10 MW10-10 MW10-10 MW10-11 MW10-11 MW10-11 MW10-12Sample No. MW10-10 Dup-1 Average RPD MW10-11 MW10-11 MW10-11 MW10-12

Laboratory ID Non-Potable 1133284-09 1133284-11 % B10-07462-7 1022196-03 1133284-07 B10-07462-5Sample Date (mm/dd/yy) Ground Water 08/11/11 08/11/11 08/11/11 08/11/11 03/24/10 05/28/10 08/11/11 03/24/10

Date of Analysis (mm/dd/yy) (Table 3) 8/17/20114 8/17/20114 3/25/20102 6/2/20103 8/17/20114 3/25/20102

- - 273 273 273 0.0 - - 321 -- - 0.06 0.06 0.06 0.0 < 0.01 0.15 0.16 2.13- - < 12 < 4 - - - - < 4 -- - 82 25 53.5 106.5 - - 18 -- - 2 1.7 1.85 16.2 - - 4.1 -- - 1790 1760 1775 1.7 - - 2620 -

0.005 0.066 < 0.002 < 0.002 < 0.002 - < 0.005 < 0.01 < 0.002 -- - 366 366 366 0.0 - - 958 -- - 7.6 7.6 7.6 0.0 - - 7 -- - 958 970 964 1.2 - - 1820 -- - 1 1.1 1.05 9.5 - - 0.6 -

Anions1 2300 397 370 383.5 7.0 454 - 414 -

0.1 - 3.2 3.1 3.15 3.2 1.8 2.5 3.4 -0.1 - < 0.05 < 0.05 < 0.05 - < 0.1 < 0.05 < 0.05 -- - - - - - - - - -

Metals2 29 0.121 0.121 0.121 0.0 - - 0.144 -

10 45 0.027 0.028 0.0275 3.6 - - 0.06 -- - 122 122 122 0.0 - - 326 -- - < 0.1 < 0.1 < 0.1 - - - < 0.1 -- - 14.9 15.1 15 1.3 - - 34.7 -- - < 0.005 < 0.005 < 0.005 - - - 0.055 -- - 1.99 1.95 1.97 2.0 - - 13.1 -5 2300 351 243 297 36.4 - 241 217 -

All Units in milligrams per litre (mg/L) Except Where Noted Otherwise.1 = Anions analysed 6/3/10 and Cyanide analysed 5/28/10.2 = Chloride, Ammonia and Cyanide analysed 3/26/10.3 = Anions analysed 6/7/10 and Cyanide analysed 6/1/10.

6 = Ammonia analyzed 3/24/10.7 = Chloride and Ammonia analyzed 3/26/10 and Cyanide analysed 3/30/10.8 = Chloride analysed 4/12/10 and Cyanide analysed 4/14/10.9 = Anions analysed 8/17/11 and Cyanide analysed 8/18/11.10 = Cyanide analyzed 11/18/11, Anions analysed 11,19,11.

4 = Ammonia and COD analysed 8/15/11, Anions, and Metals analysed 8/16/11, Cyanide and TDS analysed 8/18/11, DOC analysed 8/19/11 and BOD analysed 8/22/11.5 = Anions analysed 8/16/11, COD, Hardness and pH analysed 8/17/11, Cyanide and TDS analysed 8/18/11, Ammonia, TKN and metals analysed 8/19/11 and Conductivity analysed 8/20/11.

Manganese

Hardness Cyanide

Sodium Potassium

Calcium Iron

Chloride Nitrate (as N) Nitrite (as N)

Boron

Magnesium

pH (pH units)

Barium


Chemical Oxygen Demand (COD)

Parameters

Sulphate

General Inorganics Alkalinity

Biochemical Oxygen Demand (BOD) Ammonia

Total Dissolved Solids (TDS)

Dissolved Organic Carbon (DOC) Conductivity

Total Kjeldahl Nitrogen (TKN)


Table 7Summary of General Chemistry Ground Water Analyses - Eastern L




Date of Analysis (mm/dd/yy) (Table 3)

- -- -- -- -- -- -

0.005 0.066- -- -- -- -

Anions1 2300

0.1 -0.1 -- -

Metals2 29

10 45- -- -- -- -- -5 2300




Manganese

Hardness Cyanide

Sodium Potassium

Calcium Iron


Boron

Magnesium

pH (pH units)

Barium



Parameters

Sulphate






MW10-12 MW10-12 MW10-12 MW10-12 MW10-13 MW10-16 MW10-17 MW10-17MW10-12 Dup-2 Average RPD MW10-13 MW10-16 MW10-17 MW10-17

1134051-09 1134051-13 % 1134051-02 1134051-03 B10-07462-6 1022188-0908/12/11 08/12/11 08/12/11 08/12/11 08/12/11 08/12/11 03/24/10 05/27/10

8/22/20115 8/22/20115 8/22/20115 8/22/20115 3/25/20102 6/2/20103

322 322 322 0.0 423 461 - -2.27 2.23 2.25 1.8 3.77 1.26 < 0.01 0.0912 14 13 15.4 14 17 - -133 96 114.5 32.3 182 237 - -23.3 16.4 19.85 34.8 24.4 14.2 - -1120 1160 1140 3.5 2090 1200 - -

< 0.002 < 0.002 < 0.002 - < 0.002 < 0.002 < 0.005 < 0.01287 292 289.5 1.7 507 402 - -7 7 7 0.0 7.2 7.2 - -

602 572 587 5.1 1190 692 - -11.7 12.8 12.25 9.0 9.1 9.3 - -

191 201 196 5.1 384 119 350 ‐0.1 0.1 0.1 0.0 < 0.1 < 0.1 1.7 1.7

< 0.05 < 0.05 < 0.05 - < 0.05 < 0.05 < 0.1 < 0.057 11 9 44.4 233 39 - -

0.6 0.567 0.5835 5.7 0.152 0.263 - -0.046 0.047 0.0465 2.2 0.039 0.05 - -

89 91.8 90.4 3.1 218 166 - -20 20.2 20.1 1.0 12.5 3.72 - -

15.5 15.2 15.35 2.0 17 15.3 - -0.262 0.237 0.2495 10.0 1.01 0.601 - -5.09 5.23 5.16 2.7 4.75 3.09 - -97.4 104 100.7 6.6 208 86.6 - -







- -- -- -- -- -- -

0.005 0.066- -- -- -- -

Anions1 2300

0.1 -0.1 -- -

Metals2 29

10 45- -- -- -- -- -5 2300




Manganese

Hardness Cyanide

Sodium Potassium

Calcium Iron


Boron

Magnesium

pH (pH units)

Barium



Parameters

Sulphate






MW10-17 MW10-18 MW10-28 MW10-29 MW11-1 MW11-2 MW11-2 MW11-2MW10-17 MW10-18 MW10-28 MW10-29 MW11-1 MW11-2 Dup-4 Average

1133284-01 1134051-07 1133284-02 1133284-03 1133284-04 1134058-08 1134058-0908/11/11 08/12/11 08/11/11 08/11/11 08/11/11 08/15/11 08/15/11 08/15/11

8/17/20114 8/22/20115 8/17/20114 8/17/20114 8/17/20114 8/19/20119 8/19/20119

199 451 403 237 N/A - - -0.06 0.41 0.38 0.06 0.11 0.18 0.05 0.115< 10 4 < 4 < 6 N/A - - -62 20 13 34 N/A - - -1.4 9.5 7.4 1.3 N/A - - -

1350 2630 2350 1470 N/A - - -< 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002

391 562 747 311 N/A - - -7.7 7 6.9 7.5 N/A - - -912 1490 1420 764 N/A - - -1.6 1 0.8 0.9 N/A - - -

297 517 391 299 N/A - - -2 0.2 5 2.9 3.1 4.5 4.3 4.4

< 0.50 < 0.05 < 0.50 < 0.05 < 0.05 < 0.05 < 0.05 < 0.0557 140 359 107 N/A - - -

0.154 0.253 0.228 0.102 0.083 - - -0.024 0.073 0.097 0.023 0.025 - - -126 188 257 103 N/A - - -

< 0.1 0.116 0.128 < 0.1 N/A - - -< 20 22.1 25.4 13.2 N/A - - -0.058 0.141 0.222 < 0.005 N/A - - -2.22 10.5 9.37 1.72 N/A - - -151 326 281 183 117 - - -







- -- -- -- -- -- -

0.005 0.066- -- -- -- -

Anions1 2300

0.1 -0.1 -- -

Metals2 29

10 45- -- -- -- -- -5 2300




Manganese

Hardness Cyanide

Sodium Potassium

Calcium Iron


Boron

Magnesium

pH (pH units)

Barium



Parameters

Sulphate






MW11-2 MW12 MW27 MW31RPD MW12 MW27 MW31

% 1134051-08 1134051-04 1134051-0108/15/11 08/12/11 08/12/11 08/12/11

8/22/20115 8/22/20115 8/22/20115

- 195 422 212113.0 0.39 2.79 0.55

- < 2 9 30- < 10 42 23- 4.3 7.7 4.7- 541 1460 581- < 0.002 < 0.002 < 0.002- 184 269 644- 7.2 7.4 7.5- 374 756 326- 1.1 3.7 0.9

- 50 257 604.5 < 0.1 < 0.1 < 0.1- < 0.05 < 0.05 0.05- 11 1 5

- 0.312 0.309 0.264- 0.029 0.048 0.031- 51 92.7 68.8- 3.27 11.8 4.54- 13.7 9.08 12.5- 0.141 0.492 0.193- 2.49 5.66 2.76- 27.6 176 37.5


Comments by the Ministry of the Environment on:

• Rationale for Removing the Geomembrane from the Soil Cap Covering the

Eastern Landfill, letter report dated February 15, 2012. Prepared by AMEC and submitted as part of RA1200-11b (IDS. No. 3678-8JPR93)

The proponent has proposed removing as a risk management measure, the geomembrane barrier over the former Eastern Landfill. Previously, this membrane had been proposed to minimize infiltration through the landfill and the potential generation of leachate containing dissolved contaminants. The Ministry does not object to not having the geomembrane - EnviroLiner 4030 or equivalent - provided in those areas of the RA property where it was suggested as part of the 0.5m cap. However, the following comments need to be addressed in a revised Risk Management Plan.

1. In removing the proposed geomembrane, there will remain a requirement for placement of a clean fill cap to prevent contact with the underlying impacted landfill soils. At the bottom of the second paragraph on Page 1 of the Rationale Letter, the proponent describes the proposed cover that was to be placed over the geomembrane. However, there is no description of the proposed soil cover that will replace the geomembrane/soil combination. The proponent should explicitly describe the construction of the proposed replacement soil cap.

2. In removing the proposed geomembrane, the proponent will remove the barrier to

deep root growth that it offered. The proponent should confirm that the proposed risk management plan for landscaping and planting will be adequate given the proposed absence of a root growth barrier.

3. The proponent has indicated that, other than chloroform, there are no exceedances

of the MOE Table 3 SCSs in ground water in the vicinity of the Eastern Landfill. Chloroform exceedances are described by the proponent as being related to infrastructure leakage. It is noted that ground water exceedances have been identified previously at MW10-12 (F2 PHC on May 27/2010), MW10-17 (F3 and F4 PHC on August 11/2011), and MW11-1 (F3 and F4 PHC on August 11/2011), although in subsequent analysed samples from these wells, concentrations have been below the MOE Table 3 SCSs. Given the recent detected concentrations of F2, F3 and F4 PHC, it is difficult for the reviewer to agree that that there are no exceedances of the MOE Table 3 SCSs. Additional data are required to confirm that the previous detected elevated concentrations are anomalous. Perhaps the proponent has sampled more recently with low flow techniques and the recent data is more representative, however, this is not yet evident in what has been presented.

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4. None of the data obtained as a result of the January 2012 field work was presented in AMEC’s letter-report dated February 15, 2012. Prior to the said field work, the Ministry had requested that data be collected in relation to the potential for landfill gas generation. We heard at the February 6th, 2012 meeting that methane was found at a concentration that is twice the ceiling acceptable under the MOE guideline (20% LEL for methane). The Ministry is still waiting for such information and other stemming from the January 2012 field work to be documented and commented upon, particularly in the context of the Risk Management Plan.

5. The proponent continues to look at some carbon-containing compounds, as

opposed to all sources of carbon in the subsurface. The discussion on leachate transport modeling is focused on contaminants of concern (for brownfields) which were to be expected to have very limited mobility. For instance, the behaviour of PAHs and metals in the subsurface – addressed in the section "Assessment of the Soil Leaching" - and particularly their groundwater transport does not represent what will happen to such materials/wastes as wood, lumber and debris, on contact with rainfall/snowmelt percolating the soil strata and leaching out carbon-rich compounds under future site conditions. The Ministry fails to see any discussion on this and other processes that appear in groundwater transport equations. Presence of wood in significant quantities in the subsurface has been reported: the retaining wall delineating the former inlet was built with it.

6. The proponent has indicated that the results of leachate modelling “predicts ground

water concentrations orders of magnitude higher than what has been measured at the Site” noting that there “are no unacceptable risks associated with surface water discharge”. It is noted that the proponent has only considered a limited number of parameters (i.e. PAHs and some metals) in the leachate modelling and that the proponent has not modelled those parameters which have previously been identified in the ground water in the vicinity of the Eastern Landfill (i.e. F2, F3 and F4 PHC). The proponent may wish to evaluate the potential for leaching of these parameters from the landfill under the increased infiltration conditions that would result from removal of the existing asphalt cover and in absence of the previously proposed geomembrane;

7. Ground water monitoring and sampling has been proposed as a means of

demonstrating that adverse effect develops in the absence of the geomembrane liner. Insufficient detail has been provided with respect to the locations of the proposed monitoring wells to allow the reviewer to comment on the adequacy of the proposed monitoring program; although, conceptually the approach is agreeable. The proponent is encouraged to ensure that wells are located both within and down gradient of the landfill;

8. In the event that exceedances of the MOE Table 3 SCSs are identified in ground

water, the proponent has proposed developing a contingency plan that may include “monitoring beyond the three (3) year target termination date, increased

2

monitoring frequency, further evaluation of potential risks and implementation of any mitigative measured as deemed appropriate”. The proponent may wish to consider evaluating the “potential risks” now, within the current risk assessment. The proponent should include some possible scenarios and mitigations to demonstrate that viable solutions would be available to the proponent should the need arise in future.

9. At the February 6th meeting, we heard reasons evoked by AMEC’s landfill group

staff: they are not documented in the Feb. 15th letter-report.

10. It is the Ministry’s understanding from numerous communications with City staff and representatives that the Landsdowne Park property (LPP) re-development was aiming for LEED certification. To gain LEEDs points under the sustainable site category, stormwater management specifialists opted to collect stormwater from the 16.3 hectares of the LPP and to infiltrate the same in the subsurface of a small portion of the RA property, perhaps over an area of a few hundreds of square metres. Since the get-go to the LPP re-development project, the Ministry: (i) has identified the need for all engineering disciplines to co-ordinate/integrate each other's work; (ii) has reminded all parties of concern on several occasions of the same; (iii) re-iterates that it does not have control over any aspect of the engineering work because it remains the responsibility of all engineering practitioners signing and sealing documents presented to the Ministry.

Note: the proponent is respectfully reminded that in order for the Ministry to draft a Certificate of Property Use, a revised Risk Management Plan needs to be filed with the Ministry and to respond to the points mentioned above and in previous communications to the Ministry's satisfaction.

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January 30, 2012

Environmental Assessment and Approvals Branch Ontario Ministry of the Environment Floor 12A, 2 St. Clair Ave. West Toronto, ON M4V 1L5 Attention: Director Dear Sir: Re: Revised Risk Assessment

Lansdowne Park and Sylvia Holden Commemorative Park 945-1015 Bank Street, Ottawa, Ontario IDS No3678-8JPR93, RA1200-11

Please find enclosed one original and six copies of the Revised Risk Assessment (RA) prepared in reference to the above noted property. The Revised RA has been prepared by AMEC Environment & Infrastructure, a division of AMEC Americas Limited, on behalf of The City of Ottawa. The Revised RA takes into account MOE comments provided on the Risk Assessment (dated December 9, 2011), as well as additional correspondence between the MOE and AMEC. All correspondence is document in Appendix A. Efforts have been made to identify information added to the RA with an underline and information deleted from the RA with a strikethrough. In the review of this Revised RA, please note that:

• The Phase One ESA and Phase Two ESA are currently being updated to address the MOE comments and are not included within this RA. The summary of the Phase One ESA and Phase Two ESA have been updated to take into account the MOE comments and additional investigations. These are provided in Appendix D.

• Updates to the risk management plan are currently in progress and being discussed with the MOE. As such, the full risk management plan (Appendix I) is not provided within this RA. Section 7 provides a summary of the risk management plan. The information in this section may be adjusted, but will meet the same performance objectives outlined in Section 7.1.

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If you have any questions related to the RA report, please contact me at (416) 434-6916. Respectfully Submitted, AMEC Environment & Infrastructure

Stuart Bailey, PhD., QPRA Principal AMEC Environment & Infrastructure a division of AMEC Americas Ltd.

Documents

Re: Risk Assessment – Ref No. 3678-8JPR93 …ottawa.ca/cs/groups/content/@webottawa/documents/pdf/mdaw/mtc3/...Rationale for Removing the ... .clean soil (Table 3 Site Condition