ASSESSMENT OF LFG VERTICAL MIGRATION OTTAWA...

ASSESSMENT OF LFG VERTICAL MIGRATION

OTTAWA LANDFILL

WASTE MANAGEMENT

TECHNICAL REPORT – SURVEY APRIL 2009

PROJECT No Q116300-101

GENIVAR S.E.C.

1175 Lebourgneuf Boulevard, 3rd floor

Québec (Québec) G2K 0B4

Phone : (418) 780-0878

Fax : (418) 780-4182 Document prepared by Marlène Demers, eng.

Member OIQ number : 115373

And approved by Catherine Verrault, M.Sc., M.A.Sc.

Quebec, May 12th , 2009

Landfill gas emission surface sampling Ottawa Landfill

GENIVAR i Q116300-101

TABLE OF CONTENT

Page

TABLE OF CONTENT .................................................................................................................. i LIST OF TABLES ......................................................................................................................... ii LIST OF FIGURES ....................................................................................................................... ii LIST OF APPENDIX .................................................................................................................... ii

1. INTRODUCTION ............................................................................................................. 1

2. METHODOLOGY ............................................................................................................. 2 2.1 Location of measurements ..................................................................................... 2 2.2 Methodology......................................................................................................... 2

2.2.1 Instrumentation ....................................................................................... 2 2.2.2 Instrument calibration.............................................................................. 3 2.2.3 Meteorological constraints ....................................................................... 3

3. RESULTS .......................................................................................................................... 6 3.1 Regulations ........................................................................................................... 6 3.2 Surface sampling results......................................................................................... 6 3.3 Site configuration and well performance .............................................................. 23 3.4 Improvements since the previous assessment ....................................................... 23 3.5 Wind speed ........................................................................................................ 23

4. INTERPRETATION OF RESULTS...................................................................................... 24


GENIVAR ii Q116300-101

LIST OF TABLES

Page

TABLE 3-1 : POINTS HAVING A METHANE CONCENTRATION HIGHER THAN 500 PPMV – APRIL 2009......................................................................................................... 8

TABLE 3-2: POINTS HAVING A METHANE CONCENTRATION HIGHER THAN 500 PPMV - DECEMBER 2008 ................................................................................................. 9

LIST OF FIGURES

Page

FIGURE 2-1 : LOCATION OF MEASUREMENT POINTS – LANDFILL – APRIL 2009 .................... 4 FIGURE 2-2 : LOCATION OF MEASUREMENT POINTS – CARP ROAD – APRIL 2009 ................ 5 FIGURE 3-1 : METHANE CONCENTRATIONS – LANDFILL – APRIL 2009................................. 17 FIGURE 3-2 : METHANE CONCENTRATIONS – LANDFILL – DECEMBER 2008........................ 18 FIGURE 3-3 : ISO-CONTOURS OF METHANE CONCENTRATIONS – LANDFILL – APRIL 2009 19 FIGURE 3-4 : ISO-CONTOURS OF METHANE CONCENTRATIONS – LANDFILL – DECEMBER

2008................................................................................................................................. 20 FIGURE 3-5 : METHANE CONCENTRATIONS CARP ROAD –APRIL 2009 ................................ 21 FIGURE 3-6 : METHANE CONCENTRATIONS CARP ROAD – DECEMBER 2008....................... 22

LIST OF APPENDIX

APPENDIX I Statistical report


GENIVAR 1 Q116300-101

1. INTRODUCTION

Waste Management of Canada Corp. has given a mandate to GENIVAR S.E.C. for the

assessment of methane emission at the surface of Ottawa landfill.

According to the offer for professional services, the following tasks were performed :

Measurement on a continuous basis of the methane concentrations in the

ambient air above the surface of the landfill site and the air sparging system with

the FID-GPS technology developed by the firm GENIVAR S.E.C. ;

Measurement on a continuous basis of the methane concentrations in the

ambient air above the ground along four (4) extra lines, located on the north and

south sides of the landfill site, with the FID-GPS technology developed by the

firm GENIVAR S.E.C. ;

Data processing and mapping of results ;

Technical report editing.

Field work was performed by Mr. Dave Veilleux and Mr. Alexandre Monette of

GENIVAR S.E.C. on April 22 & 24, 2009.


GENIVAR 2 Q116300-101

2. METHODOLOGY

2.1 Location of measurements

Assessment of vertical migration of LFG was performed above the entire landfill and

above the ground along four (4) extra lines located on the north and south sides of

the landfill site. Location of the measurement points is shown on Figure 2-1.

This assessment was also performed above the LFG air sparging system trench (2 lines

of 1 km long at a height of approximately 6 inches on each side above ground).

Location of the measurement points is shown on figure 2-2.

2.2 Methodology

Methane concentrations above ground are measured and recorded on a continuous

basis with a portable Flame Ionisation Detector (FID). Spatial location of the

measurement points are defined and recorded by a Global Positioning System (GPS).

According to the EPA procedure, the sampling is done along the periphery of the

waste cells and along a serpentine pattern spaced about 30 meters apart, at a height

of approximately 6 inches above ground.

Methane concentrations are then processed and spatial coordinates are transformed

from the degree, minute, second format to the NAD83MTM Zone 9 system. A map

showing iso-contours of methane concentration is prepared. The iso-contours are

overlaid on a map showing the landfill gas collection system general arrangement in

order to be able to evaluate its efficiency and to identify areas where modifications

are required to reduce emissions to the atmosphere.

2.2.1 Instrumentation

Methane concentrations are determined with a Thermo Environmental Instruments

TVA 1000B portable analyser by the flame ionisation method. This instrument is used

for the measurements into ambient air of small concentrations of total volatile organic


GENIVAR 3 Q116300-101

compounds, expressed as methane. The analytical range of the analyser is 0 to

50 000 ppmv with a lower detection limit at 0.5 ppmv.

Since the concentration of methane in landfill gas is more than 100 times higher than

non methane organic compounds and that the measured concentrations are low, the

result given by the instrument is interpreted as methane alone.

Spatial co-ordinates are measured by a Garmin GPS which in DGPS mode has an

accuracy of less than 1 meter.

Wind speed is checked regularly during sampling with a portable anemometer.

2.2.2 Instrument calibration

Accuracy of the analytical instrument is verified on a regular basis with calibration gas

having a known composition. Adjustments are made if required. For the TVA

1000B, the calibration gases are composed of:

100 ppmv of CH4 in air ; 10 000 ppmv of CH4 in air.

2.2.3 Meteorological constraints

Average wind speed during sampling shouldn't exceed 8 km/hr with maximum peak

speed at 20 km/hr.

LANDFILL GAS EMISSIONWASTE MANAGEMENT

OTTAWA LANDFILL

GPS/FID MEASUREMENT

FIGURE 2-1

LOCATION OF MEASUREMENT POINTS

APRIL, 2009

LEGEND

ACTIV

EAREA

345800 346000 346200 346400 346600 346800 347000

5015200

5015400

5015600

5015800

5016000

5016200

GAS EXTRACTION WELL

MEASUREMENT POINTS

2500, rue Jean-Perrin, bur. 204 Québec (QC) G2C 1X1

Tél.: (418) 845-8885 Téléc.: (418) 845-5559

CARP R

OAD

FLARE

SCALE

& O

FFICE

BUILD

ING

HIGHW

AY 417

LANDFILL


OTTAWA LANDFILL

GPS/FID MEASUREMENT

FIGURE 2-2

LOCATION OF MEASUREMENTPOINTS

APRIL, 2009

MEASUREMENT POINTS

LEGEND

FENCE

EXISTING FENCE


Tél.: (418) 845-8885 Téléc.: (418) 845-5559


GENIVAR 6 Q116300-101

3. RESULTS

3.1 Regulations

In Ontario, owners of landfill sites need an approval if their facilities “may discharge

or from which may be discharged a contaminant into any part of the natural

environment other than water » (Environmental Protection Act, R.S.O. 1990,

CHAPTER E.19, part II General Provisions, section 9 Approval of Director, plant or

production process). However, no specific maximum acceptable concentration of

methane above the surface is defined.

Under item No. 4 of Provincial Officer’s Order No. 5830-6Z2PPW, WM is required

to perform landfill gas emission surveys at the Ottawa landfill site in April, June,

August, October and December 2009. Each report shall include also the survey

results of the previous campaign and describe any actions related to the LFG

collection and flaring system taken since the last survey.

US EPA has enacted operational standards in "Standards of Performance for New

Stationary Sources and Guidelines for Control of Existing Sources: Municipal Solid

Waste Landfills", into effect since March 12th, 1996 (40 CFR Parts 51, 52 and 60).

This rule stipulates that methane concentrations measured at the surface of the

landfill shall be less than 500 ppmv. EPA methodology and standard will be used for

the assessment of methane emissions to the atmosphere at the Ottawa landfill.

3.2 Surface sampling results

Results show that there are 27 points (0,38%) having a methane concentration above

500 ppmv compared to 3,60% of the points for the previous survey. Table 3-1

presents the location of those points together with their concentration and table 3-2

presents the results of December 2008 survey.

Figure 3-1 presents the detailed results for this survey and figure 3-2 for December

2008. Iso-contour map of methane concentrations is shown on figure 3-3 for this

sampling campaign and figure 3-4 for December 2008. The highest concentration


GENIVAR 7 Q116300-101

recorded in the present survey is 6 582 ppmv at (346 258, 5 015 414) which is

located near of well #18.

High methane emissions are concentrated mainly on the north-east corner, near well

#78 and along the north slope, near well #48.

Figure 3-5 presents the methane concentrations obtained above the LFG air sparging

system located along Carp Road for this survey and figure 3-6 for December 2008.

No methane concentration higher than 500 ppmv was measured in April 2009.


GENIVAR 8 Q116300-101

Table 3-1 : Points having a methane concentration higher than 500 ppmv – April 2009

X Y CH4 (ppmv)

346258 5015414 6582

346713 5016055 4257

346713 5016056 3247

346710 5016057 1848

346708 5016057 1566

346176 5015564 1444

346095 5015268 1314

346264 5015638 1003

346247 5015439 958

346087 5015354 910

346096 5015496 802

346095 5015275 719

346095 5015278 699

346561 5015702 660

346179 5015568 627

346406 5015804 627

346670 5016038 611

346104 5015501 596

346246 5015437 580

346407 5015805 562

346671 5016040 559

346089 5015355 551

346562 5015659 547

346152 5015540 536

346174 5015561 533

346096 5015280 532

346054 5015229 514


GENIVAR 9 Q116300-101

Table 3-2: Points having a methane concentration higher than 500 ppmv - December 2008

X Y CH4 (ppmv)

346511 5015564 40100

346543 5015707 9837

346513 5015566 8645

346507 5015559 7877

346459 5015518 7400

346545 5015627 7069

346465 5015523 6009

346458 5015517 5659

346449 5015927 5004

346188 5015267 4880

346285 5015352 4742

346463 5015637 4601

346461 5015520 4561

346508 5015561 4533

346452 5015510 4290

346451 5015928 4117

346464 5015636 3834

346465 5015637 3564

346451 5015509 3201

346468 5015526 3168

346472 5015528 3163

346470 5015527 3112

346547 5015629 3108

346287 5015354 2979

346284 5015350 2961

346457 5015515 2927

346495 5015548 2883

346510 5015562 2856

346045 5015569 2791

346415 5015473 2738


GENIVAR 10 Q116300-101

X Y CH4 (ppmv)

346044 5015568 2688

346055 5015578 2685

346469 5015640 2669

346172 5015401 2521

346047 5015571 2398

346053 5015577 2379

346453 5015511 2375

346496 5015550 2356

346467 5015524 2354

346417 5015475 2342

346051 5015575 2332

346062 5015585 2318

346059 5015582 2244

346116 5015238 2220

346049 5015573 2205

346463 5015521 2145

346074 5015598 2100

346078 5015601 2087

346413 5015471 2056

346064 5015587 2022

346431 5015603 1963

346485 5015540 1963

346510 5015676 1962

346190 5015269 1924

346543 5015625 1879

346515 5015567 1876

346042 5015566 1869

346503 5015556 1818

346450 5015928 1782

346474 5015530 1778

346014 5015541 1763

346266 5015417 1761


GENIVAR 11 Q116300-101

X Y CH4 (ppmv)

346270 5015419 1739

346505 5015558 1712

346447 5015926 1703

346418 5015476 1682

346143 5015227 1678

346057 5015580 1664

346421 5015480 1652

346420 5015478 1639

346145 5015229 1589

346016 5015543 1575

346429 5015487 1555

346441 5015922 1535

346544 5015708 1526

346484 5015538 1513

346066 5015589 1502

346512 5015678 1483

346146 5015230 1448

346493 5015546 1429

346455 5015513 1426

346448 5015927 1409

346244 5015313 1387

346501 5015555 1374

346175 5015404 1322

346412 5015470 1309

346148 5015232 1274

346423 5015482 1265

346455 5015666 1259

346114 5015236 1222

346424 5015483 1222

346142 5015228 1215

346010 5015538 1199

346012 5015539 1157


GENIVAR 12 Q116300-101

X Y CH4 (ppmv)

346627 5015786 1147

346073 5015595 1145

346478 5015534 1135

346371 5015465 1131

346008 5015536 1126

346467 5015639 1110

346068 5015590 1099

346061 5015583 1078

346537 5015622 1063

346006 5015534 1057

346268 5015418 1057

346482 5015537 1055

346243 5015311 1054

346628 5015787 1051

346487 5015541 1048

346076 5015599 1035

346482 5015689 1028

346004 5015532 1027

346486 5015693 1008

345975 5015505 1007

346373 5015467 1003

346333 5015396 985

346461 5015637 981

345974 5015503 969

346364 5015461 969

346372 5015466 967

346040 5015565 963

346074 5015442 961

345985 5015514 960

346426 5015485 956

346476 5015532 955

346498 5015552 935


GENIVAR 13 Q116300-101

X Y CH4 (ppmv)

346272 5015420 933

346289 5015356 933

346152 5015235 929

346439 5015922 925

346150 5015233 922

345996 5015524 919

346002 5015530 915

346400 5015609 894

346519 5015686 893

346516 5015683 883

345998 5015526 882

346363 5015460 877

345977 5015507 868

346529 5015614 862

346036 5015561 853

346076 5015444 849

346369 5015464 847

346018 5015545 838

346431 5015489 837

346251 5015431 835

346196 5015679 830

346038 5015563 820

346154 5015236 819

346017 5015255 815

345993 5015521 813

345987 5015516 809

346375 5015469 808

346088 5015609 807

345991 5015519 786

346649 5015805 777

346475 5015531 776

345995 5015523 759


GENIVAR 14 Q116300-101

X Y CH4 (ppmv)

346071 5015594 759

346378 5015472 758

346070 5015592 753

346000 5015528 742

346360 5015457 732

346443 5015847 732

345983 5015512 720

346117 5015239 707

346250 5015431 707

346376 5015471 707

346368 5015463 700

346023 5015550 693

346025 5015551 691

346533 5015616 691

346276 5015342 671

346030 5015556 667

346351 5015449 667

346271 5015337 663

346357 5015454 661

346480 5015535 661

346358 5015456 658

346530 5015615 658

346428 5015486 657

346500 5015553 657

346547 5015595 654

345989 5015517 653

346086 5015607 647

346445 5015849 642

345968 5015498 641

346034 5015559 641

346029 5015554 640

346518 5015571 636


GENIVAR 15 Q116300-101

X Y CH4 (ppmv)

346520 5015572 636

346366 5015462 632

346265 5015417 629

345981 5015510 617

346361 5015459 617

346453 5015931 616

346156 5015237 612

346132 5015219 611

346259 5015481 610

346539 5015623 610

346112 5015235 609

346354 5015452 603

346445 5015924 602

346140 5015226 600

346027 5015553 596

346520 5015688 594

345979 5015509 593

346610 5015773 591

346522 5015574 589

346411 5015469 588

346489 5015543 588

346139 5015225 585

346353 5015450 584

345958 5015489 583

346469 5015946 583

346019 5015254 580

346380 5015474 580

346472 5015643 579

346443 5015923 577

346228 5015412 575

346235 5015671 574

346350 5015447 574


GENIVAR 16 Q116300-101

X Y CH4 (ppmv)

346356 5015453 571

346471 5015642 568

345972 5015502 566

346021 5015548 562

346444 5015501 557

346260 5015483 550

346433 5015492 546

346541 5015624 543

345960 5015490 541

346032 5015558 541

346432 5015490 539

345914 5015448 538

345916 5015450 538

346297 5015364 536

346147 5015264 534

346517 5015569 531

346436 5015495 530

346135 5015222 527

346517 5015684 526

346409 5015467 525

346348 5015446 522

346019 5015546 520

346549 5015630 519

346448 5015506 518

346272 5015338 517

346435 5015494 512

346524 5015575 512

345970 5015500 504

346143 5015261 503

346274 5015340 500


OTTAWA LANDFILL

GPS/FID MEASUREMENT

FIGURE 3-1

METHANE CONCENTRATIONSLANDFILL

APRIL, 2009

LEGEND

ACTIV

EAREA

0 à 50 ppmv

50 à 100 ppmv

100 à 500 ppmv

500 à 50000 ppmv

345800 346000 346200 346400 346600 346800 347000

5015200

5015400

5015600

5015800

5016000

5016200


Tél.: (418) 845-8885 Téléc.: (418) 845-5559


OTTAWA LANDFILL

GPS/FID MEASUREMENT

FIGURE 3-2

METHANE CONCENTRATIONSLANDFILL

DECEMBER, 2008

LEGEND

ACTIV

EAREA

0 à 50 ppmv

50 à 100 ppmv

100 à 500 ppmv

500 à 50000 ppmv

345800 346000 346200 346400 346600 346800 347000

5015200

5015400

5015600

5015800

5016000

5016200


Tél.: (418) 845-8885 Téléc.: (418) 845-5559


OTTAWA LANDFILL

GPS/FID MEASUREMENT

FIGURE 3-3

ISO-CONTOURS OFMETHANE CONCENTRATIONS

APRIL, 2009

LEGEND

ACTIV

EAREA

0 ppmv

25 ppmv

50 ppmv

100 ppmv

250 ppmv

500 ppmv

1000 ppmv

10000 ppmv

345800 346000 346200 346400 346600 346800 347000

5015200

5015400

5015600

5015800

5016000

5016200


Tél.: (418) 845-8885 Téléc.: (418) 845-5559


OTTAWA LANDFILL

GPS/FID MEASUREMENT

FIGURE 3-4

ISO-CONTOURS OFMETHANE CONCENTRATIONS

DECEMBER, 2008

LEGEND

ACTIV

EAREA

0 ppmv

25 ppmv

50 ppmv

100 ppmv

250 ppmv

500 ppmv

1000 ppmv

10000 ppmv

345800 346000 346200 346400 346600 346800 347000

5015200

5015400

5015600

5015800

5016000

5016200


Tél.: (418) 845-8885 Téléc.: (418) 845-5559

346700 346800 346900 347000 347100 347200 347300 347400 347500

5015600

5015700

5015800

5015900

5016000

5016100

5016200

5016300

CARP R

OAD

FLARE

SCALE

& O

FFICE

BUILD

ING

HIGHW

AY 417

LANDFILL


OTTAWA LANDFILL

GPS/FID MEASUREMENT

FIGURE 3-5

METHANE CONCENTRATIONSCARP ROAD

APRIL, 2009

LEGEND

FENCE

EXISTING FENCE

0 to 50 ppmv

50 to 100 ppmv

100 to 500 ppmv

500 to 50000 ppmv


Tél.: (418) 845-8885 Téléc.: (418) 845-5559

346700 346800 346900 347000 347100 347200 347300 347400 347500

5015600

5015700

5015800

5015900

5016000

5016100

5016200

5016300

CARP R

OAD

FLARE

SCALE

& O

FFICE

BUILD

ING

HIGHW

AY 417

LANDFILL


OTTAWA LANDFILL

GPS/FID MEASUREMENT

FIGURE 3-6

METHANE CONCENTRATIONSCARP ROAD

DECEMBER, 2008

LEGEND

FENCE

EXISTING FENCE

0 to 50 ppmv

50 to 100 ppmv

100 to 500 ppmv

500 to 50000 ppmv


Tél.: (418) 845-8885 Téléc.: (418) 845-5559


GENIVAR 23 Q116300-101

3.3 Site configuration and well performance

As of April 2009 survey, the landfill gas collection system at the Ottawa landfill is

composed of 177 vertical extraction wells and horizontal collectors installed at the

bottom of North, West and South slopes. All of these wells are connected to three

(3) flaring stations (2 enclosed flares with 3 blowers and 1 candlestick flare with 1

blower) via a 450 mm header located at the bottom of the slopes.

3.4 Improvements since the previous assessment

This is a summary of the work that was completed since the last air emission survey

which was conducted in December 2008.

An electrical and piping system was installed on the North, West and South Slopes to

install pumps to dewater the LFG wells. The pumps will be installed in May.

A total of 1,700m of horizontal collector was installed at the base of the North, West

and South Slopes. A total of 16 vertical wells were also installed at the base of the

Northeast Slope.

3.5 Wind speed

Sampling was done when the winds were under specifications described at 2.2.3.

The average velocity of the wind was between 6 and 8 km/hr and the gust of the

wind was 15 km/h on Wednesday (April 22, 2009) and the average velocity of the

wind was between 4 and 8 km/hr and the gust of the wind was 11 km/h on Friday

(April 24, 2009).


GENIVAR 24 Q116300-101

4. INTERPRETATION OF RESULTS

The results shown on Figure 3-3 indicate that high emissions are principally located :

1) Along the south slope, near well #18 ;

2) On the north-east corner, near well #78 ;

3) Along the north slope, near well #48.

The integrity of the soil cover should be checked and modified if required and the

vacuum increased at the wells located in the area of the high spots.

No high value was recorded above the ground along the four (4) extra lines located

on the north and south sides of the landfill site and above the air purging system near

Carp road.

APPENDIX I

STATISTICAL REPORT

—————————— Gridding Report —————————— Tue May 12 11:15:48 2009 Elasped time for gridding: 0.08 seconds Data Source Source Data File Name: R:\GENIVAR\Q116300 (Biogaz - WM Ottawa, Surface 2009)\Avril 2009\Fichiers Excel\SITE.xls X Column: A Y Column: B Z Column: C Data Counts Active Data: 7045 Original Data: 8084 Excluded Data: 0 Deleted Duplicates: 1039 Retained Duplicates: 278 Artificial Data: 0 Superseded Data: 0 Univariate Statistics ———————————————————————————————————————————— X Y Z ———————————————————————————————————————————— Minimum: 345879 5015173 0 25%-tile: 346184 5015459 2.79 Median: 346387 5015676 16.15 75%-tile: 346585 5015884 35.03 Maximum: 346922 5016182 6582 Midrange: 346400.5 5015677.5 3291 Range: 1043 1009 6582 Interquartile Range: 401 425 32.24 Median Abs. Deviation: 200 212 13.85 Mean: 346386.74506742 5015670.7748758 32.749744499645 Trim Mean (10%): 346385.96909005 5015670.5382432 22.234467749566 Standard Deviation: 245.48381225292 253.36983377858 120.16255920507 Variance: 60262.302078225 64196.272668988 14439.040634711

Coef. of Variation: 3.6691144019877 Coef. of Skewness: 33.722316722949 ———————————————————————————————————————————— Inter-Variable Correlation ———————————————————————————— X Y Z ———————————————————————————— X: 1.000 0.738 0.032 Y: 1.000 0.067 Z: 1.000 ———————————————————————————— Inter-Variable Covariance ———————————————————————————————— X Y Z ———————————————————————————————— X: 60262.302078225 45895.745305456 950.36558851971 Y: 64196.272668988 2032.6282661145 Z: 14439.040634711 ———————————————————————————————— Planar Regression: Z = AX+BY+C Fitted Parameters ———————————————————————————————————————————— A B C ———————————————————————————————————————————— Parameter Value: -0.023712170208602 0.057897282022183 -282147.37473476 Standard Error: 0.0097974099637514 0.0094924759176076 45165.058175013 ———————————————————————————————————————————— Inter-Parameter Correlations ———————————————————————————— A B C ———————————————————————————— A: 1.000 0.738 0.703 B: 1.000 0.999 C: 1.000 ———————————————————————————— ANOVA Table ————————————————————————————————————————————

Source df Sum of Squares Mean Square F ———————————————————————————————————————————— Regression: 2 670193.06420633 335096.53210317 23.352 Residual: 7042 101052848.20733 14350.021046199 Total: 7044 101723041.27154 ———————————————————————————————————————————— Coefficient of Multiple Determination (R^2): 0.006588409625085 Nearest Neighbor Statistics ————————————————————————————————— Separation |Delta Z| ————————————————————————————————— Minimum: 1 0 25%-tile: 1.4142135623731 0.35 Median: 2.2360679774998 2.39 75%-tile: 2.8284271247462 9.34 Maximum: 4.4721359549996 6553.94 Midrange: 2.7360679774998 3276.97 Range: 3.4721359549996 6553.94 Interquartile Range: 1.4142135623731 8.99 Median Abs. Deviation: 0.5923591472464 2.32 Mean: 2.2805967446734 17.880668559262 Trim Mean (10%): 2.2765901590727 6.4214067181832 Standard Deviation: 0.75483762271119 155.29009883812 Variance: 0.56977983666028 24115.014797154 Coef. of Variation: 0.33098250467743 8.6848038328906 Coef. of Skewness: -0.069768577598228 34.933199855896 Root Mean Square: 2.4022700407061 156.31613194191 Mean Square: 5.7709013484741 24434.73310528 ————————————————————————————————— Complete Spatial Randomness Lambda: 0.0066943054218648 Clark and Evans: 0.37319108208166 Skellam: 1710.0548430606 Exclusion Filtering Exclusion Filter String: Not In Use Duplicate Filtering

Duplicate Points to Keep: Maximum Z X Duplicate Tolerance: 0.00012 Y Duplicate Tolerance: 0.00012 Deleted Duplicates: 1039 Retained Duplicates: 278 Artificial Data: 0 ———————————————————————————————————————————— X Y Z ID Status ———————————————————————————————————————————— 345883 5015387 2.59 6263 Retained 345883 5015387 2.35 6464 Deleted 345883 5015387 2.36 6458 Deleted 345883 5015387 2.38 6440 Deleted 345883 5015387 2.46 6369 Deleted 345909 5015392 0.12 7996 Retained 345909 5015392 0.09 8014 Deleted 345909 5015410 0.55 7769 Retained 345909 5015410 0.28 7891 Deleted 345909 5015410 0.39 7845 Deleted 345929 5015456 2.45 6375 Retained 345929 5015456 2.27 6521 Deleted 345929 5015456 2.4 6421 Deleted 345982 5015393 26.32 2776 Retained 345982 5015393 20.87 3406 Deleted 345983 5015393 18.14 3747 Retained 345983 5015393 12.86 4474 Deleted 345983 5015393 18.02 3764 Deleted 345986 5015391 49.55 1288 Retained 345986 5015391 16.24 4008 Deleted 345986 5015391 17.54 3842 Deleted 345988 5015395 25.92 2815 Retained 345988 5015395 9.78 4998 Deleted 345988 5015395 11.09 4776 Deleted 345988 5015395 21.59 3326 Deleted 345988 5015395 22.15 3252 Deleted 345988 5015395 23.28 3113 Deleted

345989 5015391 19.43 3579 Retained 345989 5015391 8.8 5159 Deleted 345994 5015404 74.91 661 Retained 345994 5015404 12.49 4535 Deleted 345994 5015404 30.23 2409 Deleted 345995 5015404 41.43 1613 Retained 345995 5015404 38.98 1773 Deleted 345995 5015404 21.31 3358 Deleted 346000 5015255 2.03 6879 Retained 346000 5015255 1.69 7326 Deleted 346000 5015255 1.71 7309 Deleted 346000 5015255 1.87 7176 Deleted 346001 5015255 1.96 6995 Retained 346001 5015255 1.47 7443 Deleted 346001 5015255 1.61 7370 Deleted 346001 5015255 1.82 7241 Deleted 346012 5015347 2.63 6208 Retained 346012 5015347 0.21 7928 Deleted 346012 5015347 0.46 7806 Deleted 346012 5015347 1.88 7155 Deleted 346015 5015281 13.17 4426 Retained 346015 5015281 3.61 5807 Deleted 346015 5015281 5.31 5625 Deleted 346015 5015282 38.99 1771 Retained 346015 5015282 8.75 5169 Deleted 346019 5015381 216 86 Retained 346019 5015381 172 123 Deleted 346019 5015381 86.23 503 Deleted 346019 5015381 48.62 1316 Deleted 346019 5015381 27.1 2686 Deleted 346020 5015236 1.72 7301 Retained 346020 5015236 1.7 7320 Deleted 346027 5015438 62.14 897 Retained 346027 5015438 54.78 1110 Deleted 346027 5015438 36.72 1922 Deleted

346041 5015314 14.73 4187 Retained 346041 5015314 8.12 5261 Deleted 346041 5015314 8.2 5251 Deleted 346041 5015314 8.27 5237 Deleted 346041 5015314 8.29 5232 Deleted 346041 5015314 8.4 5222 Deleted 346041 5015314 8.77 5166 Deleted 346041 5015314 8.85 5152 Deleted 346041 5015314 8.86 5150 Deleted 346041 5015314 9.14 5095 Deleted 346041 5015314 9.62 5019 Deleted 346041 5015314 10.27 4929 Deleted 346041 5015314 10.48 4900 Deleted 346041 5015314 10.63 4869 Deleted 346041 5015314 11.26 4757 Deleted 346042 5015314 7.93 5281 Retained 346042 5015314 7.59 5336 Deleted 346042 5015563 1.51 7425 Retained 346042 5015563 0.06 8035 Deleted 346043 5015360 101 361 Retained 346043 5015360 89.58 462 Deleted 346043 5015360 67.82 766 Deleted 346043 5015360 55 1107 Deleted 346043 5015648 16.52 3972 Retained 346043 5015648 12.72 4496 Deleted 346043 5015648 12.94 4457 Deleted 346043 5015648 13.62 4348 Deleted 346043 5015648 13.83 4326 Deleted 346043 5015648 13.9 4315 Deleted 346043 5015648 16.01 4038 Deleted 346044 5015315 8.11 5262 Retained 346044 5015315 7.98 5274 Deleted 346048 5015292 6.42 5484 Retained 346048 5015292 0.12 7998 Deleted 346048 5015292 0.47 7804 Deleted 346048 5015292 1.11 7587 Deleted 346048 5015292 1.22 7558 Deleted 346048 5015292 1.25 7548 Deleted More ... ————————————————————————————————————————————

Breakline Filtering Breakline Filtering: Not In Use Gridding Rules Gridding Method: Triangulation with Linear Interpolation Anisotropy Ratio: 1 Anisotropy Angle: 0 Output Grid Grid File Name: R:\GENIVAR\Q116300 (Biogaz - WM Ottawa, Surface 2009)\Avril 2009\Fichiers Excel\SITE.grd Grid Size: 97 rows x 100 columns Total Nodes: 9700 Filled Nodes: 4734 Blanked Nodes: 4966 Grid Geometry X Minimum: 345879 X Maximum: 346922 X Spacing: 10.535353535354 Y Minimum: 5015173 Y Maximum: 5016182 Y Spacing: 10.510416666667 Grid Statistics Z Minimum: 0.019755509642313 Z 25%-tile: 5.0598369704325 Z Median: 18.531447023331 Z 75%-tile: 35.8074273901 Z Maximum: 5263.6904615128 Z Midrange: 2631.8551085112 Z Range: 5263.6707060032 Z Interquartile Range: 30.747590419667 Z Median Abs. Deviation: 15.102337159615 Z Mean: 31.782896228951 Z Trim Mean (10%): 23.220872325122 Z Standard Deviation: 101.7517885719 Z Variance: 10353.426477581 Z Coef. of Variation: 3.201463700442 Z Coef. of Skewness: 35.074150100514 Z Root Mean Square: 106.60008897877

Z Mean Square: 11363.578970281

ASSESSMENT OF LFG VERTICAL MIGRATION OTTAWA...

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