ehp by the under 2009 act · for the first time, no bore returned sulfolane results above the limit...

O'Connor Gary

From:

Sent:

Leonie Picerno [[email protected]]

Friday, 9 September 2011 10:22 AM

To: O'Connor Gary

Cc: Erik Dekker

Subject: Willawong Monitoring Program

Attachments: willawong_gw_LYP _100910.jpg; groundwater_monitoring_well_list_L YP.xls

Gary As discussed, the Willawong monitoring program was amended last year. The attached map and spreadsheet indicate monitoring locations. Basic changes to the program are summarised below: - All broken, damaged or buried wells removed from program.

of 1

- Some of the nested wells were removed from program (recent groundwater studies (particularly HLA report) have confirmed that there is little difference in results between deep and shallow wells and that these aquifers are actually connected anyway). - We are now monitoring pe!jmeter wells only as remediation has been completed and we have a good baseline of contamination. - Monitoring is undertaken on a sixmonthly basis. We aim for Aug/Sept and Feb/Mar. - Groundwater well levels are measured in all onsite wells (including ones dropped frorn the original monitoring program) on a six monthly basis. - Surface water samples are collected from Blunder and Oxley Creek on a six monthly basis.

I will forward the last round of monitoring results in another email. As discussed, the only major change I have noticed recently is an increase in ammonia in groundwater and surface water adjacent to the municipal landfill site. It was subsequently discovered that there was an electrical problem with our leachate collection system which was causing operational problems. This is currently being rectified and I hope the ammonia levels will subsequently decrease again. ·

Please feel free to contact me on 3027 4729 if you have any queries. Regards Leonie 1zj1f I, Leonie Picerno ;t/,; !.uk ~ ~ rr--' ~,_fl ~<---' o-../

City Projects Office ·17 ~- ~ .., ~ !'lj ~

Brisbane City Council ~ c7 ~ ~ Green Square, South Tower ........., ~,(, -~ ~4 ~/ - "';?" (/ 505 St. Paul's Terrace ·"" · t7 Fortitude Valley QLD 4006 ~ ' /_ ..v6, ~~ 4.~ Ph 3027 4729 ~rtw-v ~ "" r cl // ****************************************************This message has passed through an insecure network. Please direct all enquiries to the message author. ****************************************************

9/09/2011

\

14-180 File P Page 1 of 39

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BH01/01 ~-

BH01/02S BH01/03S BH01/04S BH01/05S BH01/07S BH01/08D

~ -

BH01/08S BH01/09S BH111 BH112 BH114 BH11D BH12D --- ---

BH12L BH12S ~H13S BH15D BH15S BH17D BH17S BH18S BH216 BH7D BH7S BHBA BH97/14S BH97/16 BH97/17 BH97/19 BH97/1S BH97/20D BH97/20S BH97/27 BH97/2S BH97/5S BH97/6M BH97/6S BH97/9D BH97/9S PP6 BHOB/06

~ ~-

BHOB/04 BHOB/02 BHOB/08 BHOB/09

- -

BH02/01 BH02/02 BH04/10

14-180 File P of 39 Release

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Project Name

Willawong - Groundwater Wells

Figure 1

14-180 File P of 39Release

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Willawong Environmental Monitoring

Round 46 June 2011


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1-c::: 0 a.. w 0:::

Dt•dlr.rted to" fttlltr JJrlsfurue

To: City Design Environmental Date: 4 July 2011 Management

Attn: Carl Dowthwaite, Willawong Remediation Project Manager

CC:

Scientific Analytical Services 180 Ashrldge Rd Darra Qld 4076

Enquiries: 07 3407 2666 Fax: 07 3407 2690

Chemist in Charge, Bob Gray, 3407 2661 Environmental 1, Sue Mole, 3407 2664 Environmental 2 , Patti O'Shea, 3407 2665 Microbiology, Bob Phillips, 3407 2673 Environmental Monitoring, Rebecca

MacKinney,

From: R.B. Gray, Chemist In Charge, Scientific Analytical Services

Re: WILLAWONG ENVIRONMENTAL MONITORING-ROUND 46

The forty-sixth round of monitoring for the above project was carried out between 2 and 9 June 2011 . This round of sampling was performed under dry conditions, but following wet conditions in late May.

Rainfall (measured at BLR 736 Blunder Creek, lnala Gauging station) indicated a very dry June and July, followed by an unusually wet August.

Month Rainfall (mm) Mean Rainfall AtBLR736 (measured at

Blunder Ck lnala Brisbane Airport)

March 131 138.5 April 131 90.4 May 79 98.8

The latest (September 201 0) update to the monitoring program for the Willawong Remediatio) Project concentrates primarily on measurement of components leaving the site, by sampling the bores located around the perimeter of the site. The locations monitored are annotated on the attached site map. Sampling is now conducted at 8-monfhlnte_Ly~

Multi-parameter Field Analysers, calibrated on the day of use, were employed in the determination of field results for pH, conductivity, temperature, dissolved oxygen and redox potential.

Blunder and Oxley Creeks

Physical/Inorganic Analysis

Both Blunder and Oxley Creeks exhibited good flows during the sampling period. Recorded pH values in the creeks were slightly alkaline, in a range from pH 7.3 to pH 7.6. Brisbane City Council's Water Quality Objectives for fresh water incorporate a desirable pH range of 6.5-8.5.

G:\SAS\TSAS\Reports\Willawong\REPORTS\Round 46\Round 46 report.doc

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'.j._ Conductivity readings were low and in line with long-term values, with a range of 2.00 - 360_HS/cm \1 being recorded across the sites. "

Dissolved oxygen results were acceptable at most sample locations in both Oxley and Blunder f\ \y\L~ creeks, but the lowest results have been returned for the Blunder Creek locations CMPS&F4, ")-: J CMPS&F5 and WR1, at 4.7, 5.4 and 5.5mg/L respectively. These locations are at the northwestern corner of the site and have llistoncally been affected by discharges fro the Northern Drain and the adjacent landfill. A dissolved oxygen concentration of 5mg/L is· generally accepted as the minimum concentration desirable for maintenance of a viable aquatic ecosystem.

Suspended solids concentrations were higher than usual, having been affected by several heavy rainfall events at the end of May. DOE14 and DOE15 in Oxley Creek, and CMPS&F4 and CMPS&F5 in Blunder Creek returned the highest results, in the range 35-71 mg/L.

Heavy metals concentrations were low, with most below the level of reporting.

High ammonia nitrogen results of 0.78mgjl at CMPS&F5, 0.29mg/L at CMPS&F4, 0.47mg/L at DOEB3 and 0.18mg/L at WR 1 show -a distinct influence from fne!aMfilr:-"This is also TefleCted in the oxidised nitrogeil{nitrite + nitrate) results reported for these locations. Total nitrogen results for northern Blunder Creek locations, at 0.8- 1.7mg/L, lie above the expected range for SE Queensland creeks.

No cyanide results were returned above the limit of reporting of 0.004mg/L.

Microbiological Analysis

Microbiological quality in Blunder Creek was good and complied with primary contact (swimming) guidelines of <150cfu/100ml faecal coliforms. The Oxley Creek locations DOE14 and DOE15 were slightly above the guideline, at 170 and 180cfu/1 OOmL respectively.

Groundwater Samples

Physical/Inorganic analysis

pH values for borewaters varied between a strongly acidic pH 4.4 (BH01/05S) and near-neutral pH 6.9 (BH13S). High salinity continues to be a feature of many of the bores. BH01/05S (17,0001-JS/cm) and BH02/01 (17,0001-JS/cm) returned the highest conductivities, and the lowest conductivity was recorded at BH15D (3901-JS/cm). Redox potentials varied widely, from +250mV at BH01/08D, to -94mV at BH17S.

BH 178 returned a very high ammonia nitrogen concentration of 340mg/L, followed by BH 138 at 160mg/L.

High oxidised nitrogen (N02 + N03) results were again reported at 97/98 in the south-east (23mg/L) and BH97/14S at 11 mg/L. These results are consistent with previous results from these locations.

With the locations in the centre of the site with the highest total organic carbon concentrations not being sampled, the highest TOC result came from BH17S on the western boundary near Blunder C~eek, at 180mg/L.

No location returned a total cyanide result above the limit of reporting of 0.004mg/L. For reference, the Australian Drinking water Guideline maximum value for cyanide is 0.08mg/L.

Many of the bores (27) returned arsenic results between the limit of reporting (0.001 mg/L) and 0.018mg/L, with the highest result coming from BH97 /58, at the north-eastern corner of the site.

G:\SAS\TSAS\Reports\Willawong\REPORTS\Round 46\Round 46 reporl.doc


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Cadmium results were low, with many locations below the limit of reporting of <0.0002mg/L and none exceeding 0.0006mg/L.

Cobalt has historically been found at relatively high concentrations at this site, with concentrations ranging up to 0.26mg/L, at BH01/05S on this occasion. This is consistent with previous results.

The highest lead result was 0.027mg/L at BH01/05.

No location report.ed mercury above the limit of reporting of 0.1 tJg/L.

The highest nickel concentrations were obtained for BH01/05S (0.061 mg/L) and BH17S (0.060mg/L).

Low concentrations of selenium, just above the limit of reporting, were reported for seven locations, with the highest results being returned for bores BH97/6S, BH17S and BH12S, all at 0.002mg/L.

BH114 returned the highest zinc result of 0.71 mg/L.

Organics Analysis

The range of organics targeted for this program is limited to include only the following components of interest:

Benzene 1 ,4 Dichlorobenzene 2,4 Dichlorophenol 2,6 Dichlorophenol Endosulfan 1 (alpha Endosulfan) Endosulfan 2 (beta Endosulfan) Sulfolane (selected SW corner locations) Thiolane (selected SW corner locations)

Again , only BH17S has returned a1.4 dichlorobenzene result above the limit of reporting, at 11 tJg/L.

Seven locations reported benzene above the limit of reporting, in the range 2-16tJg/L, with BH13S being the highest.

No.location reported 2.4 dichlorophenol or 2.6 dichlorophenol above the limit of reporting of 1 tJg/L. Alpha and beta endosulfan were not detected above the limit of reporting in any bore.

For the first time, no bore returned sulfolane results above the limit of reporting of 1 mg/L. BH112 returned the highest thiolane result of 916tJg/L, followed by BH01/08D at 626tJg/L. These results are considerably lower than previously reported from these locations.

Summary

The ammonia, oxidised nitrogen and total nitrogen results for Round 46 indicate some leakage of leachate into Blunder Creek adjacent to the Northern Drain and some distance upstream. Oxley Creek remains unaffected.


{


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Data Management

Data from this and preceding Rounds have been entered into the SiteMan database for future interrogation.

Please advise if you have any queries regarding this project or if we can be of further assistance.

Regards

Bob Gray Manager, Scientific Analytical Services

Attachments - graphs, location diagrams, site map


14-180 File P of 39

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• LEGEND

Sampling Site

Roads

Creeks

Municipal Landfill Site

Willawong Site Boundary

N

t INFORMATION SOURCE: Sr1~ono City Council (BCC), QASCO. SUNMAP

DOE15

DOEB3

DOE14

DOEB2

WR3

CMPS&FS

WR1

CMPS&F4

0

• Brisbane Clty

2

pH pH Unit ·

3 4 5 6 7

Brisbane City Council Willawong Remediation Project

8

Environmental Data Management System

CREEKS - ROUND 46 Pnnrod: 1fll201 1


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Municipal Land~ll Site

c:::::J Willawong Site Boundary

N

t INFORMATION SOURCE: Stfsbano City Council (BCC). CASCO, SUNMAP

DOEB3

CMPS&F5

CMPS&F4

DOE15

WR1

DOE14

WR3

DOEB2

0

•

50

Conductivity uS/em

100 150 200 250 300 350



CREEKS - ROUND 46 Printod: 1fll2011


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N

t INFORMATION SOURCE: Briobono C1/y C<>uncil (BCC), OASCO, SUNIAAP

DOE15

WR3

DOEB2

DOEB3

DOE14

WR1

CMPS&FS

CMPS&F4

0

Dissolved 02 - Field mg/L

2 3 4 5 6 7



CREEKS - ROUND 46 Pn'nrod: 1flri011


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Sampling Site

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Municipal Landfi ll Site


N

t INFORMATION SOURCE: SriUJono City CouncH (BCC). CASCO, SUNMAP

DOE14

CMPS&F4

CMPS&F5

DOE15

DOEB3

DOEB3

WR1

WR3

DOEB2

0

• Brisbane City

~~ w.ilcr,.as

Suspended Solids mg/L

10 20 30 40 50 60 70



CREEKS - ROUND 46 Pn'nrod: tfl/1011


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N

t INFORMATION SOURCE; Bn,_no Cil)' CounDI (BCC), QASCO, SUNIAAP

Coliforms Faecal (MF) cfu/1 OOml

DOE15

DOE14

DOEB3

DOEB3

CMPS&F5

CMPS&F4

WR1

DOEB2

-25 25 75 125 175



CREEKS -ROUND 46 Printod: 1/l/2011


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N

t INFORMATION SOURCE: Brisbono City Cooncil (BCC), OASCO, SUNMAP

CMPS&FS

DOEB3

DOEB3

CMPS&F4

WR1

DOEB2

DOE14

WR3

DOE15

0

• Brlsbaneaty

~~ W.Jter ,.iii:li

0.1

Ammonia as N mg/L

0.2 0.4 0.6 0.3 0.5 0.7


0.8


CREEKS - ROUND 46 Prlntod: 1/T/2011

14-180 File P of 39

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N

t INFORMATION SOURCe: Br•obono Cly Council (BCC). QASCO. SUNMAP

DOEB3

DOEB3

CMPS&FS

CMPS&F4

WR1

DOE15

DOE14

WR3

DOEB2

0

Nitrite+Nitrate as N mg/L

0.1 0.2 0.3 0.4 0.5 0.6


0.7


CREEKS - ROUND 46 Prlnrod: tfl/2011


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Vllillawong Site Boundary

N

t INFORMATION SOURCE: Brl~ban~ Oty CounciT (BCC), OASCO, SUNMAP

DOEB3

DOEB3

CMPS&FS

CMPS&F4

WR1

DOE14

DOE15

WR3

DOEB2

0

• Brisbane City

Total Nitrogen as N mg/L

0.5 1.5



CREEKS -ROUND 46 Printod: 51712011


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~11? I BH114H01/08S

. BH111

. BH97/2S. ________ -r--------_j

• LEGEND

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c:::J Willawong Site Boundary INFORMATION SOURCE: Brisbane C,ty CouneJf (BCC), CASCO, SUNMAP

N

t

Conductivity uS/em

. 17,000 to 17,000 (2)

· • 5,300 to 17,000 (6) • 3,200 to 5,300 (7) e 1 .500 to 3,200 (12) e 390 to 1 ,500 (13)


Environmental Data Management Syst em

BORES - ROUND 46 Printod: 4/l/2011


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· BJ-·l11? • BH01/08D


c=:J \Nillawong Site Boundary

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t INFORMATION SOURCE: Bri:;bano C1ty Council (BCC), QASCO, SUNMAP

Ammonia as N mg/L

1340 to 340 (1)

60 to 340 (4)

• 15 to 60 (2) e 2.7 to 15 (7) e 0 to 2.7 (21)



BORES - ROUND 46 Printed: 51712011


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~.-~~=--------~r----------BH97/9S I ~--=d

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Willawong Site Boundary /NFORMA TION SOURCE: Brl::bono C1ty C<JuncH (BCC), QASCO, SUNMAP

"' BH97/90

e s H97t27

N

t • Brlsbaneaty

Nitrite+Nitrate as N mg/L

. 23 to 23.1 (1)

. 11 to 23 (2)

• 2.9 to 11 (3) e 0.3 to 2.9 (6) e 0 to 0.3 (30)



BORES -ROUND 46 Printc<l: 5171201 1


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BH97/1S

@ 11? . BH1 ~H01/08S

. BH111 __ __,_ BH97/2S ________

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Willawong Site Boundary INFORMATION SOURCE: Btk;bono r;,ty Cooncil (BCC), OASCO, SUNMAP

N

t • Bristlane City

~~ W.>tcrJ.-

Cobalt (Soluble) mg/L

10.04 to 0.26 (5)

0.03 to 0.04 (3)

0.02 to 0.03 (6) e 0.01 to 0.02 (11) e 0 to 0.01 (14)



BORES -ROUND 46 Pnntod: 41!/1.011

14-180 File P of 39

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t INFORMATION SOURCE: Brl:;bDno C1ry Counc# (BCC). OASCO, SUN!I/AP

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. 0.006 to 0.019 (7)

. 0.004 to 0.006 (2) • 0.003 to 0.004 (3) e 0.002 to 0.003 (6) e 0.001 to 0.002 (7)



BORES - ROUND 46 Prmtod: 4/712011


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1000

r--==

800 -

600 -

..J c, 400 -::

200 -

0 BH112 BH01/08D

-200

BH111

Willawong Bores Thiolane

I I BHSA BH18S BH97/1S BH01/08S BH97/2S BH114


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12

10

8

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4

2

0

b (I.e;, 1.'<> r~ ~ ~ ~ ~ ~ <> ~ ~ ~ ~ k1 <()-<- r~ r~ r~ I ~ r~ I~ I~ ~ 10~ ~~ [<c ~ f--- 1- 1- 1- 1- 1- 1- 1- 1- 1-

-4 f- f- f- f- f- f- f- f- f- f- 1- f- 1- f-

-6

Willawong Bores 1.4-Dichlorobenzene

~ ht I"~ ~~ ~ l§ ~ ~ ~ ~ ~ I~ r0 ~ ~ ~ I« I« !?'-~ ~ ~ 10~ 0 ~ ~ ~ ~ K' 1- 1- 1- I'- 1- I'-

f- 1- f- f- 1- f- 1- 1- 1- f- f- 1- f- 1- f- f-

~ rC' ~ ~ ~ ~ ~ ~ ~ ~ brc ~ ~ ~ ~ b< !?'-~ !?--~ ~ I?'-~ b< ~ I!'~ !?'-~ ~ b< !?--~ 0

1- 1-

1- 1- f- f- f- f- f- f- f- f- 1- f- 1- f- 1-

14-180 File P of 39

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16

14 r---

12 -

10 -

8 -

6 -

4 -

2 -

0 BH13S BH01/08D BH112

Willawong Bores Benzene

BH01/08D BH08/09 BH17S BH111 BH12S


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180

160

140

120

100 r-::::! _, E

80 r-

60 1-

40 1-

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0

r-

1-

1- 1-

- - r- r-

Willawong Bores Total Nitrogen

~ nn n nnnnnnnn n nnn~-


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20

15

...I 0, E

10

5

0

~""""""

1--

I-

- r--

1-- 1- 1---

I- 1- 1-r--

:--

Willawong Bores Nitrite+ Nitrate N

n n n 11 r-1 .---. ,----,

BH97/9S BH97/14S BH97/14S BH13S BH97/16 BH7D BH08/08 BH97/20D BH01/03S PP6 BH97/6S BH97/20S BH97/19 BH97/17 BH97/6M BH01/0SS BH97/9D

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400

350

300

250

..J c, 200 E

150

100

50

0

,.....--

-

-

-

r= - r---

-- r-- -

-- r-- - - -

,_

Willawong Bores Ammonia Nitrogen

D D c:J 1'"'"::'] = = = BH17S BH13S BH97/6S BH7S BH97/20D BH97/20S BH12S BH01/08S BH97/17 BH97/9S BHOS/09 BH112

= """"""' BH7D BHSA PP6 BH15S


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0.03

0.025

0.02

...J c, 0.01 5 E

0.01

0.005

0

r=---

-

-

-- r-----

- r-----

r--- -- r--

Willawong Bores Lead

'-- 1-- 1-- 1-- 1-- --n n n n

BH01/05S BH97/17 BH97/16 BH08/09 BH216 BH01/08D BH01 /08D BH97/14S BH01/09S BH97/14S BH13S

ll r-1 n BH08/08 BH97/9S BH97/20D

14-180 File P of 39

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0.07

0.06 r- -

0.05 r- -

0.04 1- - = .--...J .--c, E .....

0.03 r- - r-- t-- t-- -,..--

0.02 1- - r-- t-- t-- - t-- - -

0.01 1- - r-- t-- t-- - t-- - -

0

Willawong Bores Nickel

- - -r-

- c-- - 1-r-,..--

- r-- - 1- t-- - -

- -,...

_ ,...c--,.. t-'" - -


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0.25

0.2

...J

c, 0.1 5 E

0.1

0.05

Willawong Bores Cobalt


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...J c, E

Willawong Bores Cadmium

0.0007 ..-----------------------------------------------------,

0.0006 +----,------,-------------------------------------------j

0.0005 +-----1

0.0004 +-----1

0.0003 +-----1

0.0002 +-----1

0.0001 +--- --1

0+---L---L--r--J----L-~--~--~-~--~--~-~-~~----L--~-~----~~~

BH216 BH7S BH1 2S BH111 BH08109 BH7D


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0.02

0.018

0.016

0.014

0.012

...I c, 0.01 E

0.008

0.006

0.004

0.002

0

F

1--

I--

I--

1--

I--

=

-,....-

- 1- -

- 1- - -

- t-- - -

- 1- - -

1--

I-- - -

Willawong Bores Arsenic

r- ,.... r- ' - - I-- -

II II II r I II I I II n n o n n n n

14-180 File P of 39

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200

180

160

140

120

...J Cl 100 E

80

60

40

20

0

,-- =

- '--

- -

- I-

,...... ,.... .... f- - f- f-

I- - I-..:._

- - I- -

_-....

- -

'-- -

Willawong Bores Total Organic Carbon

r- r-

- f- -.....

r ... - f- - f- - f- f- f- r-

f 11 1 n n D D D n n D D D n


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> E

30 0

25 0

20 0 1-

15 0 '-- - - - 1- 1-

10 0 1- - - 1- 1- 1- -

I"'

- 1- 1- - - - 1-

Willawong Bores Redox Potential

1- 1-

50 1- 1- - - 1- 1- - - - 1- 1- - - - 1- 1- 1- - - 1- - 1- - 1- 1- __ r_ 1-

-100 +-------------------------------------------------------------------------------------------------------------~

-150~------------------------------------------------------------------------------------------------------------~

14-180 File P of 39

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18000

16000 1-

14000 1-

12000 1-

10000 1-E (J

Ci5 :::

8000 1- - -F

6000 1- - - - 1- 1-

4000 1- - - - 1- 1- 1- -

2000 1- '- - - 1- 1- 1- -

0

- 1-

- 1- 1- - -

Willawong Bores Conductivity

f-- 1- 1- - - 1- 1-

~~n n n nn n nnnn n ~n ~R R


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8

7

6 1- 1- 1- 1- 1- 1- 1- 1- 1- 1- 1- 1- 1- 1-

5 1- 1- 1- 1- 1- r- 1- 1- - 1- 1- ,_ 1- 1-

~ :::::> 4 1- 1- 1- 1- 1- 1- 1- '- 1- 1- - 1- 1- ,_

:r Q.

3 1- 1- 1- 1- 1- 1- 1- 1- 1- 1- 1- - 1- 1-

2 1- 1- 1- 1- 1- 1- 1- 1- - 1- 1- - 1- 1-

1- 1- 1- 1- 1- 1- 1- 1- 1- 1- 1- 1- 1- 1-

0

Willawong Bores pH Value

1- 1- 1- 1- 1- 1- - ,.--

- 1- 1- - 1- 1- - - - - - -

1- 1- - 1- 1- - - - - - - -

'- 1- 1- - 1- 1- - - - - - -

- 1- 1- - 1- 1- - - - - - -

1- 1- 1- 1- 1- 1- - r- - - r- -

- -

- -

- 1-

- -

- 1-

- - - - - - - - -

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

- - 1- - - - - - - - - - -

- - - - - - - - - - - - 1-

- - r- - - r- - - - - - - -


Releas

ed by

EHP

unde

r the

RTI Act

2009

• LEGEND

Sampling Site

Roads

Creeks

BH112

' BH01/08D . BH111



N

t INFORM ATION SOURCE: Btisb~ne Crty Coune1l (BCC), OASCO, SUNMAP

Thiolane UG/L

. 916 to 916 (1)

. 626 to 916 (1) e 241 to 626 (1) e 52 to 241 (1)

History for BH112 3,000+---------------j 2.500 -+-------lrr----ri----f"'"'l==l 2,000-t---~~

1,500 -t----1 1,000

500 O~A-~~~~~-L~~~~A-~~~

01/2004 05/2005 09/2007 0212009 06/2011 11/2004 02/2006 01 /2008 02/2010



BORES- ROUND 46 Prlntod: 41712011


Releas

ed by

EHP

unde

r the

RTI Act

2009

BH112 ..

• LEGEND

Sampling Site

Roads

Creeks


c:=J Willawong Site Boundary

• BH01/080

N

t INFORMATION SOURCE: Bfl,bono C1ty Council (BCC), OASCO, SUNMAP

Benzene UG/L

. 16 to 16 (1)

e 6to 16 (2) • 5to 6 (1) e 2 to 5 (3)



BORES -ROUND 46 Printod: 41712011


Releas

ed by

EHP

unde

r the

RTI Act

2009

LEGEND

• Sampling Site

Roads

Creeks


c::J \Nillawong Site Boundary

N

t INFORMATION SOURCE: Brisbono C'ty Council (BCC), QASCO, SUNMAP

Brisbane Ci1y

~-:::::;;;, W.Jt'-"' 'ifii;!#.

Copper (Soluble) mg/L

. 0.021 to 0.025 (1)

• 0.011 to 0.016 (1) e 0.006 to 0.011 (6) e 0.001 to 0.006 (18)


Environmental Data Managem~nt System

BORES- ROUND 46 Printed: 4/T/2011


Releas

ed by

EHP

unde

r the

RTI Act

2009

ehp by the under 2009 act · for the first time, no bore returned sulfolane results above the limit...

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