SHELL/LORAX ANIMATED INFORMATION SYSTEM ...neiwpcc.org/tanks2013old/presentations/tuesday/Whirlwind...We may have used certain terms, such as resources, in this presentation that United

Shell Projects and Technology

SHELL/LORAX ANIMATED INFORMATION SYSTEM GROUNDWATER ASSESSMENT AND REMEDIATION

AND GROUNDWATER STATISTICAL DATA ANALYSIS TOOL

(GWSDAT)

24th National Tanks Conference September 16 – 18, 2013 Denver, CO

Curt Stanley Global Discipline Leader

1 September 2013


DEFINITIONS AND CAUTIONARY NOTE

2

The companies in which Royal Dutch Shell plc directly and indirectly owns investments are separate entities. In this presentation “Shell”, “Shell group” and “Royal Dutch Shell” are sometimes used for convenience where references are made to Royal Dutch Shell plc and its subsidiaries in general. Likewise, the words “we”, “us” and “our” are also used to refer to subsidiaries in general or to those who work for them. These expressions are also used where no useful purpose is served by identifying the particular company or companies. ‘‘Subsidiaries’’, “Shell subsidiaries” and “Shell companies” as used in this presentation refer to companies over which Royal Dutch Shell plc either directly or indirectly has control. Companies over which Shell has joint control are generally referred to “joint ventures” and companies over which Shell has significant influence but neither control nor joint control are referred to as “associates”. In this presentation, joint ventures and associates may also be referred to as “equity-accounted investments”. The term “Shell interest” is used for convenience to indicate the direct and/or indirect (for example, through our 23% shareholding in Woodside Petroleum Ltd.) ownership interest held by Shell in a venture, partnership or company, after exclusion of all third-party interest. This presentation contains forward-looking statements concerning the financial condition, results of operations and businesses of Royal Dutch Shell. All statements other than statements of historical fact are, or may be deemed to be, forward-looking statements. Forward-looking statements are statements of future expectations that are based on management’s current expectations and assumptions and involve known and unknown risks and uncertainties that could cause actual results, performance or events to differ materially from those expressed or implied in these statements. Forward-looking statements include, among other things, statements concerning the potential exposure of Royal Dutch Shell to market risks and statements expressing management’s expectations, beliefs, estimates, forecasts, projections and assumptions. These forward-looking statements are identified by their use of terms and phrases such as ‘‘anticipate’’, ‘‘believe’’, ‘‘could’’, ‘‘estimate’’, ‘‘expect’’, ‘‘goals’’, ‘‘intend’’, ‘‘may’’, ‘‘objectives’’, ‘‘outlook’’, ‘‘plan’’, ‘‘probably’’, ‘‘project’’, ‘‘risks’’, “schedule”, ‘‘seek’’, ‘‘should’’, ‘‘target’’, ‘‘will’’ and similar terms and phrases. There are a number of factors that could affect the future operations of Royal Dutch Shell and could cause those results to differ materially from those expressed in the forward-looking statements included in this presentation, including (without limitation): (a) price fluctuations in crude oil and natural gas; (b) changes in demand for Shell’s products; (c) currency fluctuations; (d) drilling and production results; (e) reserves estimates; (f) loss of market share and industry competition; (g) environmental and physical risks; (h) risks associated with the identification of suitable potential acquisition properties and targets, and successful negotiation and completion of such transactions; (i) the risk of doing business in developing countries and countries subject to international sanctions; (j) legislative, fiscal and regulatory developments including regulatory measures addressing climate change; (k) economic and financial market conditions in various countries and regions; (l) political risks, including the risks of expropriation and renegotiation of the terms of contracts with governmental entities, delays or advancements in the approval of projects and delays in the reimbursement for shared costs; and (m) changes in trading conditions. All forward-looking statements contained in this presentation are expressly qualified in their entirety by the cautionary statements contained or referred to in this section. Readers should not place undue reliance on forward-looking statements. Additional risk factors that may affect future results are contained in Royal Dutch Shell’s 20-F for the year ended December 31, 2012 (available at www.shell.com/investor and www.sec.gov ). These risk factors also expressly qualify all forward looking statements contained in this presentation and should be considered by the reader. Each forward-looking statement speaks only as of the date of this presentation, [insert date]. Neither Royal Dutch Shell plc nor any of its subsidiaries undertake any obligation to publicly update or revise any forward-looking statement as a result of new information, future events or other information. In light of these risks, results could differ materially from those stated, implied or inferred from the forward-looking statements contained in this presentation. We may have used certain terms, such as resources, in this presentation that United States Securities and Exchange Commission (SEC) strictly prohibits us from including in our filings with the SEC. U.S. Investors are urged to consider closely the disclosure in our Form 20-F, File No 1-32575, available on the SEC website www.sec.gov. You can also obtain these forms from the SEC by calling 1-800-SEC-0330.


WHAT IS THE SHELL/LORAX AIS?

The Shell/LORAX Animated Information System (AIS) was designed to help non-SME’s understand basic aspects of:

Hydrogeology including groundwater flow in the subsurface Aquifers

Gradients

Groundwater Velocity

Contaminant migration (including key processes that affect contaminant migration) as well as LNAPL considerations

Groundwater vulnerability

Site investigation

Various remediation technologies and considerations

UST systems, and

Typical remediation project progression over time 3 September 2013


HOW CAN THE SHELL/LORAX AIS BE USED?

Facilitating understanding and alignment on key issues with PMs and Consultants

Facilitating advocacy with regulators

Facilitating awareness of key issues by various external stakeholders (e.g., the public) who may be involved with a project

Facilitating management understanding of key issues related to soil and groundwater contamination

As a teaching tool for use by schools and universities

4 September 2013


KEY ASPECTS OF THE SHELL/LORAX AIS

The AIS is programmed in Adobe Flash and consists of > 600 MB of files

In order to effectively run, the files should be downloaded and run from a computer hard drive (not compatible with Mac at this time)

The animations do not lend themselves to net meetings since the computer screen cannot resolve the animation quickly enough over the internet

There are 6 major modules consisting of 1) hydrogeology, 2) basic concepts, 3) vulnerability, 4) remediation, 5) tanks, and 6) generic spill response

Each module contains hidden buttons that the user can use (or not use) depending upon the audience

The inclusion of the modules and hidden buttons, helps the user tailor the presentation to the audience

Training is required in order to effectively use the Shell/LORAX AIS

5 September 2013


FINAL CONSIDERATIONS

CD’s have been provided to Shell staff and GESS Consultants (free of charge)

The LORAX Groundwater AIS has been made publicly available (API)

Anyone can download the AIS (free) or can obtain a CD from LORAX (at a nominal fee to cover shipping and handling)

Information on this tool is available on the LORAX and API websites: www.lorax.biz (including multiple language/metric versions)

Users should register with LORAX to receive news and updates.

This tool is intended for the benefit of the general public and should not be used for financial gain.

This material is copyrighted by Shell and LORAX and must not be altered without Shell’s approval

6 September 2013

http://www.lorax.biz/


GWSDAT V 2 GROUND WATER SPATIO TEMPORAL ANALYSIS

TOOL.

Mike Spence, Wayne Jones Soil & Groundwater and Statistical Consulting, STCT UK


BUSINESS DRIVERS

Huge quantities of groundwater data (single site or portfolios of sites) generated but no standardized way to objectively report, analyze and make inference.

Lack of data analysis results in lost opportunities for closeout of groundwater monitoring, early leak detection and avoiding unnecessary remediation work.


GWSDAT- WHAT IS IT?

A decision support tool based on statistical methods to monitor contaminated groundwater data on portfolios of sites. An Excel Add-in that uses the open source (freeware) statistical programming language “R”. GWSDAT Functionality:

A user friendly graphical user interface (GUI) tool. Includes graphs and images which communicate the location and trend of contaminants which are easy to interpret and backed up with objective statistics. Identification of locations where statutory regulatory limits have been exceeded or contaminant concentrations are increasing. Groundwater flow estimation based upon groundwater levels at different well locations.

GWSDAT Project Objectives

GWSDAT: User Feedback and Roll-out of v1.2

Issues Goal

Risk-management decisions are often based on limited understanding of groundwater data:

Reduced environmental OPEX and liabilities through:

- Sites in needless long-term monitoring and remediation

- facilitated site closures, reduced reliance on active remediation systems

- Delayed response to rising trends indicative of new releases or off-site migration

- earlier identification of increasing trends (faster response helps to reduce long term management costs)

- GW data collection may be routine rather than “fit for purpose”, with specific targets in mind

- optimised use of gw monitoring (eliminate collection of redundant data)

- Trends are evaluated on a well-by well basis rather than spatiotemporally

- improved risk-management decision making through site-wide evaluation (spatial evaluation)

- Lack of easy to use statistical tools for evaluation of trends/uncertainties in gw data

- improved risk-management decision making through improved trend evaluation and uncertainty analysis

- Traditional methods of trend analysis and reporting using e.g. Excel are too time consuming to be routinely carried out for smaller sites

- clear, standardised trend plots and plume visualisations produced at the “click of the mouse”


GWSDAT BENEFITS

GWSDAT has been used operationally in the monitoring and assessment of Shell's global downstream assets (e.g. refineries, terminals, fuel stations) for a period of over 4 years. Environmental engineers have reported numerous benefits: Rapid interpretation of complex data sets for both small and large

groundwater monitoring networks. Earlier identification of new spills or off-site migration. Reduced reliance on engineered remediation through increased use of

monitored natural attenuation remedies, where groundwater data analysis supports its effectiveness.

Earlier closeout of sites in needless long-term monitoring and/or remediation.

Simplified preparation of groundwater monitoring reports.

11 September 2013


SOFTWARE DEVELOPMENT – KEY DESIGN FEATURES

Uses free open-source software (R). Graphics generated in graphical user interface (GUI) can be exported to MS Office (MS Word or Powerpoint)

Uploads monitoring data directly from an Excel worksheet and requires only well coordinates and time series groundwater elevation/ solute concentration data

Useful output for both small and large- scale sites/ datasets

Trend analysis functions reduce the effect of any errors in the input dataset

Is fast, robust, easy to install, intuitive to use and able to generate a range of standard plot types with the minimum of user input

12


EXAMPLE DATA INPUT SHEET IN EXCEL


GWSDAT USER INTERFACE

Well Trend Plot Trend and Threshold Indicator Matrix

Spatial Plot

Visualisation Options

Functions: Spatial graphics Select any CoC from the drop down menu Scroll forwards “+” and backwards “-” in time through spatiotemporal model to see concentration distribution at different times. Option to superimpose groundwater elevation contours and flow direction arrows Option to export contour plots for each CoC to report format


Functions: NAPL data handling

Option to plot NAPL distribution


Functions: NAPL data handling

NAPL plotting functions- Time series thickness

GWSDAT: User Feedback and Roll-out of v1.2 .

NA

PL T

hick

ness

(mm

)


DATA ANALYSIS USING TREND MATRIX

Scroll to time of interest (most recent monitoring event in this example) Use matrix colour coding to quickly inspect concentration trends in wells. Review data for (e.g. red squares) using temporal trend viewer on LHS Option to export most recent trend matrix (or sub matrices for large datasets) to report format Matrix can also be used to show whether concentration trend at given time point is significantly above or below a user defined threshold


GWSDAT USER INTERFACE- KEY TO TREND MATRIX Trend Key

StrongUpward

Trend

UpwardTrend

Stable

Downward

Trend

StrongDownward

Trend

Non-Detect Data

Not Available

Doubling-Time<1 Year

1 Year<Doubling-Time<2 Years

Doubling-Time>2 YearsHalf-Life>2 Years

1 Year<Half-Life<2 Years

Half-Life<1 Year

Threshold Key

NotSignificantly below

Threshold limit

Significantly belowThreshold limit

Non-Detect Data

Not Available


Use of trend analysis for site closeout

Issue- potential sites in needless long-term monitoring and remediation (difficulties in demonstrating plume stability)

Goal- facilitated site closures, reduced reliance on active remediation systems

0.5

1.0

1.5

2.0

2.5

D ate

TO

LU

EN

E

(ug

/l)

2003 2004 2005 2006

TOLU EN E in M W-5

Compliance threshold e.g. 1 ug/L

95% confidence limit on non- parametric trend

Non detect data (orange markers)


Issue- delayed response related to new releases or off-site migration

Goal- earlier identification of increasing trends (quicker response)

Leak detection

MW-1

TF-1

MW-2

TF-2

MW-3

TF-3

MW-4

TF-4

MW-5

MW-6

MW-7

MW-8

Ben

zene

Toluen

e

Eth

ylben

zene

Xyl

ene

BTE

X

MTB

E

Nap

thal

ene

TBA

Diis

opropyl

eth

er

Eth

anol

TPH-D

RO

TPH-G

RO

Trend Trend Trend Trend Trend Trend Trend Trend Trend Trend Trend Trend

02-Dec-2001

MW-1

TF-1

MW-2

TF-2

MW-3

TF-3

MW-4

TF-4

MW-5

MW-6

MW-7

MW-8

Ben

zene

Toluen

e

Eth

ylben

zene

Xyl

ene

BTE

X

MTB

E

Nap

thal

ene

TBA

Diis

opropyl

eth

er

Eth

anol

TPH-D

RO

TPH-G

RO

Trend Trend Trend Trend Trend Trend Trend Trend Trend Trend Trend Trend

02-Nov-2003

2/11/2003 2/12/2001

2e

+0

25

e+

02

1e

+0

32

e+

03

5e

+0

31

e+

04

2e

+0

45

e+

04

1e

+0

5

Date

MT

BE

(u

g/l)

2002 2004 2006 2008

MTBE in MW-4

MTB

E

MTB

E

MTBE in MW4

MW4 MW4

2/11/2003

2/12/2001


Issue- GW data collection tends to be routine rather than “fit for purpose”

Goal- optimised use of GW monitoring (end collection of redundant data)

Avoiding collection of redundant data 0

.40

0.4

50

.50

0.5

50

.60

0.6

5

Date

Be

nze

ne

(u

g/l)

2004 2005 2006 2007 2008 2009

Benzene in GA-28

GA-12

GA-13

GA-15

GA-17

GA-18

GA-19

GA-27

GA-28

GA-29

GA-30

GA-100

GA-101

GA-102

TPH C

11-C

23

TPH C

24-C

39

TPH C

4-C39

MTB

E

Ben

zene

Toluen

e

Eth

ylben

zene

Xyl

ene

TVO

C

Trend Trend Trend Trend Trend Trend Trend Trend Trend

25-Feb-2009

Trend Key

StrongUpward

Trend

UpwardTrend

Stable

Downward

Trend

StrongDownward

Trend

Non-Detect Data

Not Available

Doubling-Time<1 Year

1 Year<Doubling-Time<2 Years

Doubling-Time>2 YearsHalf-Life>2 Years

1 Year<Half-Life<2 Years

Half-Life<1 Year

Threshold Key

NotSignificantly below

Threshold limit

Significantly belowThreshold limit

Non-Detect Data

Not Available

Non- detect data

Additional Functions: Aquifer selection

Option to process data from different aquifers separately

GWSDAT: User Feedback and Roll-out of v1.2 .

Additional Functions: Model validation tools

Option to create time series plots of spatiotemporal model data vs actual concentration data

Data can also be exported to Excel, together with the % differences


Spatiotemporal Predictions for Ethylbenzene at GWSDAT Example

Sampling Date

Solu

te c

oncentr

ation (

ug/l)

10 0̂

10 1̂

10 2̂

10 3̂

10 4̂

2006 2007 2008 2009

GDBH102 GDBH104

2006 2007 2008 2009

MW10

MW5

2006 2007 2008 2009

MW7

10 0̂

10 1̂

10 2̂

10 3̂

10 4̂

MW9

Spatiotemporal Prediction Detectable Data Non-Detect Data


MAKING THE MOST OF TIME SERIES CONCENTRATION DATA THROUGH SPATIOTEMPORAL ANALYSIS

Addition or removal of monitored locations can have a large effect on the apparent concentration distribution if each individual monitoring event is interpreted in isolation

Spatiotemporal analysis creates a best- fit continuous concentration distribution to the whole of the monitoring history, thereby reducing the effect of variation in the monitoring network

25

TIME

X

Y Round 1

Round 3

Round 2


DEVELOPMENT OF SPATIOTEMPORAL MODEL

GWSDAT uses penalised splines to fit the model and a Bayesian methodology to select the appropriate degree of model smoothness

2 Papers currently in review describing the GWSDAT software application & spatiotemporal modeling approach:

oSubmitted to Environmetrics: “Efficient and automatic methods for flexible regression on spatiotemporal data, with applications to groundwater monitoring” A. W. Bowman, L. Evers, D. A. Molinaria, W. R. Jones, M. J. Spence”

oSubmitted to Environmental Modelling & Software: “GWSDAT - GroundWater Spatiotemporal Data Analysis Tool” W. R. Jones, M. J. Spence; A. W. Bowman, L. Evers, D. A. Molinari

26

Time- series plots of MTBE concentration distribution with water table elevation contours

Manufacturing Site Case Study (anonymised):

Oct 2005 to Dec 2006: MTBE plume expansion from source area in SE due to high GW flow velocity

Jan 2007 to – Oct 2007: Pumping rates increased in central well gallery to intercept plume

Nov 2007: Old pipework sections sealed off in SE of site.

Dec 2007- Sept 2008: Plume shrinkage due to MNA

GWSDAT: Roll-out of v1.2


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

39.3

39.4

39.5

39.6

39.7

39.8

39.9

40

40.

1

ND<1

9.2

ND<1

2.4

2

6.611

7.7

123.212

ND<1ND<1

8.84.9

6.54.4ND<1ND<13.85.9

ND<1ND<1

1

1.3

ND<1ND<1

0.56ND<10.78

1

117.4

145.5

123.61.43.63.6123.61.4

5.82.92.1ND<1ND<15.82.12.9ND<1ND<1

4.9 1.8

6.12

ND<1

ND<1

1.1

MTBE : 17-Oct-2005 to 16-Nov-2005

Plume Expansion


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

38.8

38.9

39

39.1

39.2

39.3

39.4

39.5

39.6

39.7 39.8

1702.3

0.773

65

44

17

2.6

ND<1

3568

7.1

ND<1

ND<1

13

ND<1

1.2

3.6

2013

4.3

ND<1

17127.4

3.6650

1612

53ND<1ND<18.74.6

ND<1ND<1

2

58

2.4

2.8

ND<1ND<1

0.55ND<10.57

79ND<1ND<1

0.5

69

3126

29

10186.68.78.718106.6

0.981.265.75.760.981.2

3.1 2.5

8.62.1

ND<1

ND<1ND<1

1.2

MTBE : 17-Nov-2005 to 16-Dec-2005

Plume Expansion


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

39.5

39.6

39.7

39.8

39.9

40

40.

1

40.2

1515

75.8

51ND<1

1616

3.43ND<12.59.86.5

ND<1ND<1

ND<10.7

3.5

2219

ND<16.7

MTBE : 17-Dec-2005 to 16-Jan-2006

Plume Expansion


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

39

39.2

39.4

39.6

39.8

39.

8 4

0

40.2

79

75

1.15

ND<1

11033

11

ND<1

ND<1

ND<1

914

ND<13

1.12.6

9.57

1519

3.75.7

ND<1

8.7224.42.97.1

0.56ND<1ND<1

221128

3.81.84.2ND<1ND<1ND<16.23.5657

ND<1ND<1ND<1

5.1

28

3.44.3

1.72.8

ND<1ND<1ND<1

ND<1ND<1ND<1ND<1

11 370

151214

19137.9161319167.9

9.61.46.92.56.99.62.51.4

2.74.4 2.54.4

101322.6

ND<1ND<1

ND<1ND<1ND<1

2.12.9

MTBE : 17-Jan-2006 to 16-Feb-2006

Plume Expansion


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

39.4

39.6

39.8

40

40.

2 40.4

40.6

40.8

41

41.2

41.4

41.6

91515256

1009288110

ND<1ND<1ND<1

10022046019112023

10121213

ND<1ND<1ND<1ND<1

ND<1ND<1

ND<1ND<1ND<1

1133

ND<1

3.1

2524

9.3

3312

ND<1

13

6.6ND<1467510571667.7

ND<1

5.7

4

ND<1

ND<1ND<1ND<1

41

2421162921242916

2.1682959403340246840293359402.124

ND<14.3 224.1

56142ND<16.1

ND<1ND<1ND<1

ND<1

1.9

MTBE : 17-Feb-2006 to 16-Mar-2006

Plume Expansion


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

39.8

40

40.2

40.4

40.6

40.8

41

41.2

41.4

41.6

41.8

42

20ND<136

ND<1383616

644312

16

ND<11.6ND<1

ND<1ND<1ND<1ND<1ND<1ND<1

69061055140390

12888

14263435

ND<1ND<1ND<1ND<1ND<1ND<1ND<1


51251239.75.7

ND<1

2.1

7.32.9

ND<1

2522

18

3.5

3835139.4

ND<1ND<1

1518

68.7510356ND<1ND<166642444.3

ND<1

4000

13000

2.3

2.4

ND<1

ND<1ND<1ND<1

52414216

1.3

2500

202537

313228

ND<19161128404722ND<17.628471640112297.6

441.127383832731.1

ND<1ND<1ND<1ND<11.4 2322.5

676547.2333336.24


5829068350

ND<1

1.4

MTBE : 17-Mar-2006 to 16-Apr-2006

Plume Expansion


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

40.4

40.6

40.8

41

41.2

41.4

41.6

41.8

42

42.

2

42.

4

85ND<1ND<1

74ND<1ND<1

1010ND<119

2.72.1

ND<1ND<1ND<1ND<1ND<1ND<1ND<1ND<1

1100690960730640910880

88081013001700

17121314

ND<1ND<1ND<1ND<1ND<1ND<1ND<1ND<1ND<1

ND<12.6ND<1ND<1ND<1ND<1ND<1ND<1ND<1

338.736.9334

ND<1

1.9

2.3

196

29

7312971

ND<1ND<1

90013002222

10142919222937540.54ND<1333ND<13.44

ND<13.7

560076

1900

1100ND<1

540500

39

2

2.2

ND<1

ND<1ND<1ND<1

2224 1100

49220

5895

308.73.32130218.73.3

ND<11.81.4ND<15300.825300.821.81.4

ND<1ND<1ND<1ND<1ND<1ND<1ND<1ND<1ND<1ND<1ND<12ND<1ND<1

54344446441446.43ND<12


11002900110027006501800170280340

ND<1ND<1

1200

1.2

MTBE : 17-Apr-2006 to 16-May-2006

Plume Expansion


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

40.4

40.6

40.8

41

41.2

41.4

41.6

41.8

42

42.

2

241.337

ND<1ND<1ND<1ND<1

ND<1ND<1ND<1ND<1

ND<1ND<19180

2.40.55ND<1


15

860480330400700390320320

1600120014001700

1618ND<1ND<1



3.23355.74343

ND<1

1.2

17

737

27

ND<1ND<1

66360110350

ND<1ND<1ND<1

17001763

ND<1 ND<1ND<1

6762110180200310160400400ND<1ND<167916

ND<1163317

ND<1ND<1ND<1

ND<1ND<1ND<1

ND<1

65003538 ND<1

880 1400 510

ND<1

510140

ND<1ND<1

440

95320

2300

190280

3

1700

1100

1.6

0.96

ND<1ND<1

ND<1ND<11.5

1624

1.7ND<1

18029

150

ND<1ND<115015240102401501510

ND<11.11.4ND<12000.652000.651.11.4

ND<1ND<12ND<11.6ND<1ND<1ND<122ND<12ND<12

544767.1365ND<1ND<1ND<1223ND<153


1600250016001600

ND<1ND<1

1000ND<1

1.4

MTBE : 17-May-2006 to 16-Jun-2006

Plume Expansion


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

40.

2

40.3

40.4

40.5

40.6

40.7

40.8

40.9

41

41.

1

ND<1

0.61ND<1


630510700180

1200

9ND<16



3432.73ND<15.14

ND<1

ND<1

9.9

2484

22

15064490330

ND<1ND<1

9208804964

420540490470540510500420ND<1ND<142432965

5.42.7

ND<1

ND<10.92

0.64

ND<1ND<1

ND<1ND<14

1608.33.2

4

360440

200280

31440130231304403123

ND<11.70.881.2ND<1224.3224.31.20.88

ND<1ND<1ND<1ND<10.96ND<1ND<1 322ND<11ND<1ND<1ND<1

575ND<13.4ND<165ND<1ND<1ND<11.717ND<12.93


78016006601700

ND<1ND<1

ND<1

200

0.73

MTBE : 17-Jun-2006 to 16-Jul-2006

Plume Expansion


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

39.7

39.8

39.9

40

40.1

40.2

40.3 4

0.4

12100

ND<177

0.6

0.99

ND<1ND<1ND<1


74095

940



334444

ND<1

ND<1

ND<1

21

140380650

23

ND<1

91490120017010066

ND<1ND<1ND<1

ND<1

ND<1

7505178100

450440430410360330340ND<1ND<1ND<15878100140

0.56ND<1ND<1ND<1

ND<1

9.2

1200

ND<1

ND<1

1.4

1.2

ND<1ND<1

ND<1ND<10.66

1201.628ND<1

15

2000

20024075

140180250

ND<12001100160ND<11100200160

5.1154.62.14.6155.12.1

ND<1ND<1ND<1ND<1ND<1ND<1ND<1ND<1ND<1ND<1ND<1ND<1ND<1

5455ND<143244333


6301100630140

ND<1ND<1

1.4

ND<1

ND<1ND<1

MTBE : 17-Jul-2006 to 16-Aug-2006

Plume Expansion


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

39.4

39.6

39.8

40

40.2

40.4

40.6

40.8

41

ND<1

ND<1

ND<1ND<1

ND<1ND<1

33091

960

ND<1

ND<1ND<1ND<1

ND<1ND<1

55

ND<1

ND<1

38

560660

16

11080

ND<1ND<1

110

310330300320ND<1ND<1150190180180

ND<1ND<1

ND<1

ND<1

350ND<1

690

ND<1

200

1267 2400

ND<1

2000

1200

ND<1

ND<1

ND<1ND<1

ND<1ND<1

1626

130110

5163

86011003708408401100860370

8ND<111ND<1118ND<1ND<1

3ND<1ND<1ND<1

55333ND<1

ND<1ND<1

250220940

2ND<1ND<1 ND<1

ND<1

16

ND<1

MTBE : 17-Aug-2006 to 16-Sep-2006

Plume Expansion


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

39.4

39.6

39.8

40

40.2

40.4

40.6

40.8

41

41.2

39ND<1

ND<1140

ND<1

ND<1

ND<1ND<1

ND<1ND<1

130120

730

ND<1

ND<1ND<1

ND<1ND<1

6

ND<1

ND<1

630

660750

24

ND<1

8405778

ND<1ND<1

22010090

310310350390370ND<1ND<1190200230280240

ND<1ND<1

150045

4400

ND<1

6.2

ND<1ND<1

ND<11.8ND<1

201515

3

1000

8890

4336

22001700230012001700220023001200

369.44.74.4369.44.44.7

ND<13 ND<1ND<1

4522ND<12120

ND<1ND<1

3903104300

ND<1ND<1

ND<1

MTBE : 17-Sep-2006 to 16-Oct-2006

Plume Expansion


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

39.7

39.8

39.9

40

40.1

40.2

40.3

40.4

40.5

40.6

40.6

40.

7

ND<1

ND<1

3

ND<1ND<1

ND<1ND<1

110150

600

2

ND<1ND<1

ND<1ND<1

33

ND<1

ND<1

620430

5

7541

ND<1ND<1

5845

320310360250ND<1ND<1200210250210

ND<1ND<1

ND<1

590

ND<1

2

ND<1

ND<1ND<1ND<1

3238

11070

32

10007806705705707801000670

ND<12ND<168ND<1682ND<1

ND<12 ND<1ND<1

44120937933104

ND<1ND<1

ND<1ND<1

ND<1

MTBE : 17-Oct-2006 to 16-Nov-2006

Plume Expansion


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

39.2

39.4

39.6

39.8

40

40.2

40.4

40.6 4

0.8

8ND<1330

ND<1ND<1

ND<1

3

ND<16

ND<1ND<1

6378140

5301100

ND<1

ND<1ND<1

ND<1ND<1

66

ND<1

ND<1

420

500

3

ND<1

4304101918

ND<1ND<1

523327

200170170160ND<1ND<1210190190230

ND<1ND<1

2500150

83004600

1901401200

1

2

ND<1ND<1

ND<1ND<1ND<1

283 870850

5564

3731

790510340690510340790690


ND<12 ND<1ND<1

55444ND<1

ND<1ND<1

22

ND<1

160

1

MTBE : 17-Nov-2006 to 16-Dec-2006

Plume Expansion


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

39.2

39.4

39.6

39.8

40

40.2 40.4

40.6

40.8

ND<1

ND<1

2

ND<1

4661

900

1

520

4

ND<1

140210150160160

3400

671100

450

12

55

30

2

311ND<119

ND<1

MTBE : 17-Dec-2006 to 16-Jan-2007

Plume Stabilisation

Pumping rates increased


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

39.8

40

40.2

40.4

40.6

40.8

41

41.

2

41.

4

41.

6

ND<1

ND<1

ND<1

4

ND<1

4349

1200

5

ND<1

4

ND<1ND<1

11

ND<1

ND<1

ND<1

56ND<115017011097

ND<1

ND<1

1200220

30005200

ND<1

620

21 290

14

270440

152

ND<11 ND<1

56395735863

ND<1

MTBE : 17-Jan-2007 to 16-Feb-2007

Plume Stabilisation


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

40

40.2

40.4

40.6

40.8

41

41.2

41.4

41.6

41.8

42

42.

2

ND<1ND<1

ND<1

ND<1

5

3031

710

1

ND<1ND<1

ND<1

3

ND<11

1

140801515

ND<1

ND<1

ND<1

2

7242

94535865506769ND<1ND<192100777882606665

ND<1

ND<1

ND<1

970170050

18001200 ND<1

ND<1

130

1

180220

250

ND<1

ND<1

ND<1

75 290180

10

150210

11ND<1

ND<1 1

436272615861608185

ND<1ND<1

5602

MTBE : 17-Feb-2007 to 16-Mar-2007

Plume Shrinkage


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

40.4

40.6

40.8

41

41.2

41.4

41.4

41.6

ND<1ND<1

ND<1

ND<1

ND<1

ND<1ND<1

2829

540

1

ND<1ND<1ND<1

ND<1

333

ND<1

ND<1

ND<12

1302526

ND<1

ND<1

ND<1

68717179617170496274ND<1ND<15756505443504948494045

ND<1

ND<1

16001900280 ND<1

950990

ND<1

6ND<1

2ND<1 150260

10

11074

3ND<1

1 ND<1

5567681707355626163494860

ND<1ND<1ND<1

98

6505501300

MTBE : 17-Mar-2007 to 16-Apr-2007

Plume Shrinkage


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

39.

7 3

9.9

40

40.

1

40.

2

40.

3 4

0.4

40.4

40.

5

40.5

40.

6

40.6

40.7

2ND<1

ND<1ND<1

ND<1

ND<1

15

ND<1ND<1ND<1

3927

260

ND<1

ND<1

2

ND<1ND<11ND<1

ND<1

22010027

ND<1ND<1

ND<1ND<1

ND<1ND<1

ND<1

31

ND<153745849ND<1ND<133322723

ND<1ND<1

ND<1

ND<1ND<1ND<1

ND<1ND<1

13009601420 ND<1ND<1

810710390 6

ND<1ND<1

646

ND<1

4

84420

120

1

ND<1

ND<1

150ND<12 310

5

1504319

ND<18ND<1ND<1

ND<12 ND<1ND<1

333202221

ND<1

2700

MTBE : 17-Apr-2007 to 16-May-2007

Plume Shrinkage


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

39.

8

40

40.2

40.4

40.6

40.8

41

ND<1ND<1

ND<1

5

ND<1

ND<1

7

1212

320

ND<1

ND<1

ND<1

2

ND<1ND<1

ND<1

6999

ND<1

2

ND<1

ND<1

2127

53785145ND<125372619

ND<1

ND<1ND<1

ND<1

47015 ND<1

590990 ND<1

ND<1

64

ND<1

1295

150

ND<1

ND<1

7 210100

65

1003915

11ND<1

ND<1ND<1

421321614

59037035

MTBE : 17-May-2007 to 16-Jun-2007

Plume Shrinkage


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

40.4

40.6

40.8

41

41.2

41.

4 41.

6

41.

8

ND<1ND<1

ND<1

ND<1

16

4

79

210

ND<1

385033

40573936411811141411

600 7

23001400

2ND<1

130

2121

1922222222

ND<1

4536

MTBE : 17-Jun-2007 to 16-Jul-2007

Plume Shrinkage


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

40

40.2

40.4

40.6

40.8

41

41.

2

41.

4

41.

6

41.

8

ND<1

ND<1

ND<1

7

ND<1ND<1

ND<1ND<1

ND<1

33

130

ND<1

ND<1ND<1

ND<1ND<1

32

ND<1

ND<1

ND<1ND<1

ND<1

ND<1ND<1

ND<1

4210

8

ND<1ND<1

57

22

1

20

ND<1 ND<1ND<1

49353828

63442921ND<1ND<114101311

ND<1ND<1

ND<1

ND<1ND<1ND<1

ND<1ND<1

470 5 ND<1ND<1

1300920 1

ND<1ND<1

3

ND<1

2

77

2

ND<1

ND<1

ND<1

ND<1

ND<1

ND<1

5 140

73

26

128ND<1

ND<1ND<1ND<1ND<1

4330212114

ND<1ND<1

420

380180

MTBE : 17-Jul-2007 to 16-Aug-2007

Plume Shrinkage


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

40.8

40.9

41

41.1

41.2

41.3

41.4

41.

5 4

1.6

41.

7

41.

8

41.

9

12

ND<1

ND<1

ND<1

7164

160

ND<1

9

158

1137362831

273019171410810

9201100

7140

2

ND<1

2410

14

21191314

1255

410

320420

MTBE : 17-Aug-2007 to 16-Sep-2007

Plume Shrinkage


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

40

40.1

40.2

40.3

40.4

40.5

40.6

40.7

40.8

40.

8

ND<1ND<1

ND<11100

ND<1

ND<1

ND<1

ND<1ND<1

245

91

ND<1

ND<1ND<1

ND<1ND<1

22

2

3

ND<1

512ND<1

ND<1

2

1

52522232220

1411976ND<1ND<187777

ND<1ND<1

ND<1

370340 2 ND<1

540460

ND<1

ND<1670210

350

ND<1 200310

1

34283

6ND<1

ND<12 11

331518171714

ND<1ND<1

7

350730

8001200

MTBE : 17-Sep-2007 to 16-Oct-2007

Plume Shrinkage

Old pipework sections sealed off


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

39.4

39.6

39.8

40

40.2

40.4

40.4

593

5561

ND<1

ND<1

ND<1

ND<1

154

80

ND<1

ND<1

ND<1

3

3

79

1

ND<1

3514

ND<1ND<1

4

1

ND<1

24181613

5543ND<17766

ND<1

ND<1ND<1

ND<1ND<1

410 2 ND<1ND<1

660470 ND<1

ND<1ND<1

32300

3

53077

ND<1

590220

240

1ND<1 160

ND<1

464

84ND<1

2 1

310855

ND<1

3

760

1600710

MTBE : 17-Oct-2007 to 16-Nov-2007

Plume Shrinkage


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

39.6

39.8

40

40.2

40.4

40.6

40.8

41

41.2

ND<1

ND<1

7

ND<1

ND<1

ND<1

93

110

ND<1

ND<1

ND<1

3

ND<1

ND<1

2622

12ND<1ND<1

ND<1

1518

12

ND<1

ND<1

243315

4333ND<17665

ND<1ND<1

ND<1

5 5

ND<1

22015 ND<1

490260 ND<1

ND<1

160

ND<1

ND<1

ND<1

22

ND<1

200

180

ND<1

ND<1

ND<1

ND<1

96

23

151011

31

2 1

34ND<114

ND<1

5

27061ND<1

190051

MTBE : 17-Nov-2007 to 16-Dec-2007

Plume Shrinkage


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

40.6

40.7

40.8

40.9

41

41

41.1 41.2

41.3

41.4

41.

5

41.

6

41.

7

ND<1ND<18

16

ND<1

ND<1

3

ND<1

ND<1

2

142

68

ND<1

ND<1

ND<1

2

6

6

1

2

ND<1

9

3

918

34453ND<164334

10

ND<1

280250 ND<1

8801700910

ND<1

1725023

ND<1

1

8

ND<12

ND<1 2

256664

ND<1

37

110130020004011071ND<12904

190340110

MTBE : 17-Dec-2007 to 16-Jan-2008

Plume Shrinkage


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

40

40.2

40.4

40.6

40.8

41

41.2

41.4

41.

6

15

35

ND<1

ND<1

2

ND<1ND<1

ND<1

101

81

1

ND<1

ND<1

1

5

52

44

ND<1

153

ND<1

13

5

ND<1

12272525

3ND<15ND<13ND<122556

ND<1

39 8

ND<1

290196 ND<1

11001400 ND<1

ND<1

ND<1

5

2

28033

61100

190100

ND<1

ND<1

ND<1

4 130100

22

71617167

7ND<1

ND<1 2

23ND<165

ND<1

26

11005604629ND<1ND<1

16062

MTBE : 17-Jan-2008 to 16-Feb-2008

Plume Shrinkage


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

40.4

40.5

40.6

40.7

40.8

40.9

41

41.

1

ND<15

42

ND<1

ND<1

26

5854012024

141

41

4

5

126

6

4

22181822

122455

100 1

ND<1

1000850

2

1

270

2

31101151011531

3

5542

5

ND<1

ND<1

ND<1

ND<1

ND<1

ND<1 4

ND<1 ND<1

5204002619ND<1ND<1

11099

MTBE : 17-Feb-2008 to 16-Mar-2008

Plume Shrinkage


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

40.4

40.6

40.8

41

41.2

41.4

41.6

41.8

42

42.

2

ND<122

ND<1

ND<1

2

ND<1ND<1

ND<1ND<1

325405001301108687

ND<1160

152

93

2

ND<1ND<1

ND<1ND<1

22

ND<1

ND<1

6

4

ND<1

54

9534

ND<1

ND<1ND<1

43

65

2

14

543

303125

ND<1ND<1ND<14876

ND<1

ND<12ND<11

ND<1ND<1ND<1

9 158ND<1ND<1

ND<1ND<1

400220 42 ND<11

1200800 ND<1

ND<1ND<1

ND<1

1111

3

1

1702010

60

7819

ND<1

ND<1

ND<1

ND<1

2

111

100130

23

744552755424

26362

ND<1ND<1 22

3335311

ND<1ND<1

15

ND<1

5

ND<1

3

ND<1ND<1

ND<1ND<1

ND<1ND<1

ND<1

ND<1

45665

ND<1ND<1ND<1ND<1ND<1

ND<1

ND<1

ND<1ND<1 3ND<1ND<1

11ND<1 ND<1

2401401421ND<1ND<1

680

MTBE : 17-Mar-2008 to 16-Apr-2008

Plume Shrinkage


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

41

41.2

41.4

41.6

41.

8

42

ND<1

ND<1

ND<1

3

ND<1

78150290230160934151594529

ND<1ND<1ND<1783210

21

39

1

ND<1

ND<1

3

ND<1ND<1

36

ND<1 3221

35363327

ND<1

ND<1ND<1ND<1

ND<1ND<1ND<1ND<1


14152660 ND<1ND<11113

ND<1ND<1ND<1

65 1 ND<1

300130

ND<1

ND<1

1222

4

420

11ND<1ND<1

130

2

22424222ND<1 3

33334

ND<1

ND<1

ND<1ND<1

ND<1ND<1

ND<1ND<1ND<1ND<1

ND<1ND<1ND<1

1

ND<1ND<1ND<1 ND<1ND<1ND<1ND<1

1112 ND<1ND<1ND<1

88581516ND<1ND<1

91160

MTBE : 17-Apr-2008 to 16-May-2008

Plume Shrinkage


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

40.4

40.5

40.6

40.7

40.8

40.9

41

41.1

41.2

41.3

41.

4

1

ND<1

3ND<12

ND<1

ND<1

9325160451202215

ND<1ND<18154

290210

273

30

180130

ND<1

ND<1

ND<1

3

3


3

ND<1

52

ND<1

8

4

7

1ND<1ND<1ND<1

1817151918

10111313ND<1

ND<1ND<1

ND<1ND<1ND<1ND<1

ND<1ND<1

79888842 822ND<1

ND<1ND<1

1 ND<1

150120130 ND<1

ND<1

ND<1

22ND<1

ND<1

14059

ND<1

ND<1

ND<1ND<1ND<1ND<1

19ND<119111166ND<1ND<1ND<122

553

ND<1 3

357677

ND<1ND<1ND<1

ND<1ND<1

ND<1

ND<1ND<1

ND<1ND<1 ND<1ND<1ND<1ND<1

1ND<11ND<1 ND<1ND<1

18012087433219ND<1ND<1ND<1

170907

MTBE : 17-May-2008 to 16-Jun-2008

Plume Shrinkage


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

40.2

40.4

40.5

40.6

40.7

40.8

40.9

40.9

41

ND<11

ND<1

3

ND<1ND<1

ND<1

18132102101917

ND<1ND<12330

150100280330

364

19

ND<1

ND<1

ND<1

3

43

1222

33

3442

ND<1

22

42

2

2

ND<1ND<1ND<1ND<1

1611117

1413149ND<1

ND<13

ND<1ND<1

ND<1ND<1ND<1

ND<1ND<1

25192521 1ND<1ND<1ND<1

ND<1ND<1

555ND<1ND<1

440560

ND<1

ND<1

ND<1242

2

130320

31

5227

ND<1

ND<1

ND<1ND<1ND<1ND<1

230100

ND<1ND<1

11ND<11111ND<1ND<1

ND<122ND<1ND<1

ND<1 4

48763

ND<1

3 1

ND<1ND<1

ND<1ND<1

ND<1ND<1

ND<1ND<1

ND<1ND<1 ND<1ND<1ND<1ND<1

ND<1ND<1ND<1ND<1 ND<1ND<1

62561412ND<1ND<1

8998

MTBE : 17-Jun-2008 to 16-Jul-2008

Plume Shrinkage


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

40.1

40.2

40.2

40.3

40.3

40.4

40.4

40.5

40.5

40.6

40.6 4

0.7

40.

8

40.

9

11

ND<1

2

ND<1

518020

ND<152

900380

324

11

ND<1

ND<1

ND<1

2

ND<1

ND<1

3

ND<1

23

4

ND<1

2

ND<1

2

1

ND<1

2

ND<1ND<1 ND<1ND<1

8886

1097ND<1ND<1

46

5

ND<1ND<1ND<1ND<1

ND<1ND<1ND<1ND<1

189678 314523

ND<1

2ND<1ND<1

340 ND<1

ND<1

2

1ND<1

1

13017

ND<1

ND<1

ND<1

ND<1

ND<1

ND<1ND<1

2

ND<1 3

33333

ND<1ND<1

ND<1

ND<1

ND<1

ND<1 ND<1ND<1

ND<1ND<1 ND<1

3210ND<1

46

MTBE : 17-Jul-2008 to 16-Aug-2008

Plume Shrinkage


0

5

10

25

50

75

100

200

400

800

1500

3000

5000

5e+06ug/l

2568000 2568500 2569000 2569500 2570000 2570500 2571000

56

35

00

05

63

55

00

56

36

00

05

63

65

00

56

37

00

05

63

75

00

39.9

40

40.1

40.2

40.3

40.4 40.5

40.6

40.7

40.7

40.8

ND<12

2 122

ND<1ND<1

ND<1

319027033

ND<1150110

1300430360

ND<1

3

2031

ND<1

ND<1

ND<1

1

23

343

1

2

ND<1

66654

54ND<1ND<1

247051ND<564387921217115375764926476920480

5

ND<1ND<1ND<1ND<1

ND<1

ND<1

6221 14232049

ND<1

480

ND<1

54

ND<1

ND<1

8932

23

78

ND<1

ND<1

ND<1

ND<1

130

ND<1ND<1

214410141024

21

332332

ND<1

2ND<1

ND<1

ND<1

25

ND<1ND<1

ND<1

ND<1

ND<1 ND<1

ND<1 ND<1

259ND<1

2

MTBE : 17-Aug-2008 to 16-Sep-2008

Plume Shrinkage


Q & A

September 2013 63

Documents

SHELL/LORAX ANIMATED INFORMATION SYSTEM ...neiwpcc.org/tanks2013old/presentations/tuesday/Whirlwind...We may have used certain terms, such as resources, in this presentation that United