Sustainability Report 2007/08Eastern Treatment Plant inputs and discharges
Raw sewage monitoring
The quality of raw sewage entering the plant is described in the following
table.
(All data in mg/L unless otherwise indicated).
| Parameter, Units |
Median1
|
90th Percentile
|
Maximum
|
|---|---|---|---|
| BOD5 (mg/L) | 455 | 609 | 660 |
| Suspended Solids (mg/L) | 495 | 885 | 1400 |
| pH (pH units) | 7.1 | 7.5 | 9.0 |
| Ammonia as N (mg/L) | 42 | 45 | 51 |
| Total Combined Nitrogen (mg/L) | 75 | 88 | 140 |
| Total Phosphorus (mg/L) | 15 | 20 | 27 |
| Anionic Surfactants MBAS (mg/L) | 4.4 | 7.4 | 9.3 |
| Cadmium (mg/L) | 0.0005 | 0.0009 | 0.0036 |
| Chromium (mg/L) | 0.02 | 0.040 | 0.13 |
| Copper (mg/L) | 0.13 | 0.24 | 0.45 |
| Lead (mg/L) | 0.008 | 0.015 | 0.025 |
| Mercury (mg/L)2 | 0.00052 | 0.00032 | 0.00132 |
| Phenol (g/L) | 702 | 2502 | 3002 |
| Toluene (g/L) | 2.02 | 16.62 | 502 |
| Benzene (g/L) | 0.52 | 0.52 | 502 |
| PAH's total (g/L) | 0.142,3 | 0.232,3 | 0.252,3 |
Notes:
- 1/2 Limit of Detection Values used. All results found to be less than the detection limits were taken as half the given value i.e. <2 = 1.
- Total PAH's are calculated using the sum of the following PAH's:
(acenapthylene, anthracene, 1,2-benzanthracene, 3,4-benzofluoranthene, benzo (k) fluoranthene, 1,12-benzoperylene, benzo(a) pyrene, chrysene, dibenzo(a.h)anthracene, fluorene and indeno(1.2.3-cd)pyrene. All results were less than the detection limit and were calculated at half the given value i.e. <2 = 1).
Discharge to water
The following results represent samples taken from the final effluent sample point at Truemans Rd and flow measurements at the Eastern Treatment Plant from 1 July 2007 to 30 June 2008.
| Parameter (units) |
Median
|
90th Percentile
|
Maximum
|
|||
|---|---|---|---|---|---|---|
|
Licence Limit
|
Result
|
Licence Limit
|
Result
|
Licence Limit
|
Result
|
|
| BOD5 (mg/L) | NS | 7 | NS | 22 | NS | 32 |
| CBOD5 (mg/L) | 20 | 3 | 40 | 6 | NS | 16 |
| Suspended Solids (mg/L) | 30 | 11 | 60 | 22 | NS | 100 |
| pH (pH units) | NS | 7 | NS | 8 | ≥6, ≤9 | 8.1 |
| Ammonia as N (mg/L) (Truemans Rd) |
30 | 1.8 | NS | 11 | 40 | 19 |
| Ammonia as N (mg/L) (final effluent at ETP) |
5 | 2.4 | NS | 12.9 | NS | 19 |
| Total Nitrogen (mg/L) | NS | 16.5 | NS | 25 | NS | 27 |
| Total Phosphorus (mg/L) | NS | 8.3 | 15 | 9.8 | NS | 11 |
| Anionic Surfactants (mg/L) | 0.4 | 0.1 | 0.7 | 0.26 | NS | 0.57 |
| Cadmium (mg/L)1 | NS | 0.0001 | 0.005 | 0.0001 | 0.01 | 0.0001 |
| Chromium (mg/L) | NS | 0.003 | 0.075 | 0.005 | 0.15 | 0.007 |
| Copper (mg/L) | NS | 0.015 | 0.05 | 0.015 | 0.1 | 0.048 |
| Lead (mg/L)1 | NS | 0.0005 | 0.05 | 0.0006 | 0.1 | 0.003 |
| Mercury (mg/L)1 | NS | 0.00005 | 0.0005 | 0.00005 | 0.001 | 0.00005 |
| Phenol (g/L) | NS | 0.5 | NS | 4.6 | 100 | 5.0 |
| Toluene (g/L) | NS | 0.5 | NS | 0.5 | 50 | 0.5 |
| Benzene (g/L) | NS | 0.5 | NS | 0.5 | 25 | 0.5 |
| PAH's total (g/L)2 | NS | 0.13 | NS | 0.23 | 15 | 0.25 |
| ETP discharge (ML/day)3 | NS | 300 | NS | 364 | NS | 521 |
| Outfall discharge (ML/day)4 | 540 | 300 | NS | 373 | NS | 544 |
| Total Residual Chlorine (mg/L) | NS | 0.12 | NS | 0.27 | 1.0 | 0.42 |
| E.coli (orgs/100mL) | 200 | 23 | 1000 | 118 | NS | 2500 |
| Enterococci (orgs/100ml) | NS | 7 | NS | 39 | NS | 1300 |
| Dissolved Oxygen (mg/L) | NS | 7.2 | NS | 8.4 | ≥ 6.0 | 6.0 - 8.5 |
Notes:
- All results found to be less than the detection limit were taken as half the limit of detection (LOD) e.g. <8 = 4.
- Total Poly Aromatic Hydrocarbons (PAH’s) are calculated using the sum of the following PAH’s: (acenapthylene, anthracene, 1,2-benzanthracene, 3,4-benzofluoranthene, benzo(k)fluoranthene, 1,12-benzoperylene, benzo(a)pyrene, chrysene, dibenzo(a.h)anthracene, fluorene and indeno(1.2.3-cd)pyrene. Note that laboratory error meant that one of the treated effluent PAH analytical results reported here was from a sample taken on 27th July 2006 rather than on a sample taken before 30th June 2006.
- ETP outflow flow excluding South East Water treatment plants that also discharge treated effluent into the South East Outfall.
- Calculated Total Outfall flow is the actual flow to the Outfall including South East Water discharges to the South East Outfall minus recycled water taken from the South East Outfall.
NS = No specified limit
Discharge to land
While there was no effluent discharged to land at the Eastern Treatment Plant (for irrigation purposes) the following table shows the results of a recycled water-monitoring program was undertaken during the year. The table reports water quality against the "Class C" requirements specified in the EPA Victoria Publication 464.2 "Guidelines for Use of Reclaimed Water", 2003.
| E. colimedian org/100mL | BOD5mg/L Median |
CBOD5mg/L Median |
Suspended Solids mg/L Median |
pH Median (Range) |
|
|---|---|---|---|---|---|
| Class C Limits | < 1000 | NA | < 20 | < 30 | 6.5 - 9.0 |
| Rising main leaving the Eastern Treatment Plant 1 | 6 | 6.0 | 3 | 12 | 7.0 - 8.0 |
| Ballarto Rd Sample Point (SEO Manhole No. 069) | 3 | 7 | 3 | 12 | 7.0 - 8.0 |
| Range Rd Sample Point (SEO Manhole No. 035) | 2 | 7 | 3 | 9 | 7.0 - 8.0 |
| Trumans Rd Gunnamatta (SEO Manhole No. 003) | 23 | 7 | 3 | 11 | 7.0 - 8.1 |
- Eastern Treatment Plant Reuse sample point
Effluentflow to the outfall
Daily and monthly median and maximum flows (ML/day) were measured during 2007/08. Monthly median and maximums are shown below. The total outfall flows for 2007/08 are as follows:
| Description |
Flow (ML)
|
Comment |
|---|---|---|
| ETP Outflow |
112,202
|
Total outfall pump station flow minus internal plant use |
| Calculated outfall flow |
112,990
|
Boags Rocks Outfall flow (ETP plus South East Water treatment plant flows, less water recycling) |
| Month |
Median (ML/d)
|
Maximum (ML/d)
|
|---|---|---|
| July 2007 |
341
|
515
|
| August 2007 |
282
|
437
|
| September 2007 |
309
|
490
|
| October 2007 |
307
|
360
|
| November 2007 |
319
|
520
|
| December 2007 |
312
|
521
|
| January 2008 |
269
|
343
|
| February 2008 |
327
|
433
|
| March 2008 |
262
|
460
|
| April 2008 |
267
|
334
|
| May 2008 |
284
|
365
|
| June 2008 |
330
|
411
|
Bacteriological monitoring - beach samples
Samples of receiving waters were taken throughout the year at six locations along the Gunnamatta and St Andrews beaches as detailed below:
Beach 1 The first bluff east of the discharge point
Beach 2 Gunnamatta West beach opposite the amenities block
Beach 3 Gunnamatta West beach opposite the Surf Life Saving Club
Beach 4 Gunnamatta East beach approximately 350 metres east of sample point
two
Beach 5 Le Lievres beach 110 metres west of the discharge point
Beach 6 Rye back beach - main swimming area.
The results are presented as a rolling 30-day median and rolling 60-day 75th percentile as per the recreational water quality guidelines given in the State Environment Protection Policy Waters of Victoria. The day results for E.coli and Enterococci for all samples taken at all the above sample points were consistent with the Policy requirements throughout the year. The results are as follows:
Beach E. coli data (orgs / 100
mL)
State Environmental Protection Policy Waters of Victoria require for primary
contact recreation a rolling 30 day median of ≤ 150 Orgs/100
mL.
|
BEACH 1
|
BEACH 2
|
BEACH 3
|
BEACH 4
|
BEACH 5
|
BEACH 6
|
|||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
SAMPLE DATE
|
Day result
|
30 d Median
|
Day Result
|
30 d Median
|
Day Result
|
30 d Median
|
Day Result
|
30 d Median
|
Day Result
|
30 d Median
|
Day Result
|
30 d Median
|
|
3-Jul-07
|
8 | 0 | 0 | 2 | 18 | 0 | ||||||
|
11-Jul-07
|
0 | 2 | 0 | 2 | 7 | 0 | ||||||
|
19-Jul-07
|
0 | 0 | 0 | 0 | 34 | 0 | ||||||
|
24-Jul-07
|
6 | 0 | 2 | 0 | 14 | 0 | ||||||
|
27-Jul-07
|
10 | 6 | 10 | 0 | 0 | 0 | 20 | 2 | 20 | 18 | 0 | 0 |
|
2-Aug-07
|
0 | 0 | 0 | 0 | 68 | 0 | 0 | 0 | 50 | 20 | 0 | 0 |
|
8-Aug-07
|
2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 20 | 0 | 0 |
|
14-Aug-07
|
58 | 6 | 34 | 0 | 150 | 2 | 0 | 0 | 0 | 14 | 0 | 0 |
|
20-Aug-07
|
0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 16 | 16 | 2 | 0 |
|
28-Aug-07
|
4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 5 | 0 | 0 |
|
5-Sep-07
|
0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 3 | 0 | 0 |
|
13-Sep-07
|
2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 |
|
21-Sep-07
|
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 |
|
27-Sep-07
|
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
|
3-Oct-07
|
2 | 0 | 2 | 0 | 0 | 0 | 2 | 0 | 14 | 0 | 2 | 0 |
|
9-Oct-07
|
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 0 | 0 | 0 |
|
15-Oct-07
|
0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 |
|
23-Oct-07
|
2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 10 | 8 | 0 | 0 |
|
31-Oct-07
|
0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 2 | 8 | 0 | 0 |
|
7-Nov-07
|
2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 6 | 0 | 0 |
|
12-Nov-07
|
4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 18 | 6 | 2 | 0 |
|
20-Nov-07
|
4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 18 | 10 | 0 | 0 |
|
28-Nov-07
|
10 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 7 | 0 | 0 |
|
30-Nov-07
|
0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 50 | 18 | 2 | 0 |
|
5-Dec-07
|
0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 18 | 0 | 0 |
|
11-Dec-07
|
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 13 | 0 | 0 |
|
19-Dec-07
|
6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 34 | 13 | 0 | 0 |
|
27-Dec-07
|
5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 190 | 34 | 0 | 0 |
|
2-Jan-08
|
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 420 | 34 | 2 | 0 |
|
9-Jan-08
|
11 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 120 | 120 | 0 | 0 |
|
16-Jan-08
|
6 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 130 | 130 | 3 | 0 |
|
23-Jan-08
|
2 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 24 | 130 | 0 | 0 |
|
30-Jan-08
|
2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 330 | 130 | 2 | 2 |
|
6-Feb-08
|
4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 120 | 120 | 6 | 2 |
|
13-Feb-08
|
0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 120 | 6 | 3 |
|
21-Feb-08
|
4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 260 | 120 | 0 | 2 |
|
27-Feb-08
|
10 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 16 | 120 | 0 | 2 |
|
5-Mar-08
|
0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 24 | 24 | 0 | 0 |
|
12-Mar-08
|
100 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 44 | 24 | 0 | 0 |
|
19-Mar-08
|
0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 17 | 24 | 0 | 0 |
|
26-Mar-08
|
34 | 10 | 8 | 0 | 4 | 0 | 8 | 0 | 86 | 24 | 4 | 0 |
|
2-Apr-08
|
4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 24 | 0 | 0 |
|
9-Apr-08
|
30 | 30 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 17 | 0 | 0 |
|
16-Apr-08
|
2 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 6 | 0 | 0 |
|
23-Apr-08
|
21 | 21 | 0 | 0 | 0 | 0 | 0 | 0 | 16 | 6 | 0 | 0 |
|
30-Apr-08
|
8 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 |
|
7-May-08
|
0 | 8 | 4 | 0 | 2 | 0 | 0 | 0 | 8 | 6 | 0 | 0 |
|
14-May-08
|
2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 0 | 0 |
|
21-May-08
|
4 | 4 | 2 | 0 | 14 | 0 | 0 | 0 | 6 | 6 | 0 | 0 |
|
28-May-08
|
4 | 4 | 0 | 0 | 2 | 2 | 6 | 0 | 0 | 0 | 0 | 0 |
|
4-Jun-08
|
0 | 2 | 4 | 2 | 4 | 2 | 0 | 0 | 8 | 6 | 2 | 0 |
|
11-Jun-08
|
0 | 2 | 0 | 0 | 2 | 2 | 0 | 0 | 14 | 6 | 0 | 0 |
|
18-Jun-08
|
0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 6 | 0 | 0 |
|
25-Jun-08
|
0 | 0 | 2 | 0 | 0 | 2 | 0 | 0 | 2 | 2 | 0 | 0 |
Beach Enterococci data (orgs / 100
mL)
State Environmental Protection Policy Waters of Victoria require for primary
contact recreation a rolling 30 day median of = 35 Orgs/100
mL and a rolling 60 day 75th Percentile of = 150 orgs/100
mL
|
BEACH 1
|
BEACH2
|
BEACH 3
|
|||||||
|---|---|---|---|---|---|---|---|---|---|
|
SAMPLE DATE
|
Day results
|
30 d Median
|
75th
%ile |
Day Result
|
30 d Median
|
75th
%ile |
Day Result
|
30 d Median
|
75th
%ile |
|
3-Jul-07
|
0 | 0 | 0 | ||||||
|
11-Jul-07
|
0 | 9 | 0 | ||||||
|
19-Jul-07
|
0 | 2 | 0 | ||||||
|
24-Jul-07
|
0 | 0 | 2 | ||||||
|
27-Jul-07
|
10 | 0 | 34 | 2 | 0 | 0 | |||
|
2-Aug-07
|
120 | 0 | 47 | 9 | 46 | 0 | |||
|
8-Aug-07
|
13 | 10 | 2 | 2 | 0 | 0 | |||
|
14-Aug-07
|
310 | 13 | 790 | 34 | 550 | 2 | |||
|
20-Aug-07
|
0 | 13 | 0 | 34 | 0 | 0 | |||
|
28-Aug-07
|
16 | 16 | 0 | 2 | 0 | 0 | |||
|
5-Sep-07
|
0 | 13 | 14.5 | 0 | 0 | 21.5 | 3 | 0 | 2.5 |
|
13-Sep-07
|
0 | 0 | 14.5 | 0 | 0 | 21.5 | 2 | 2 | 2.5 |
|
21-Sep-07
|
0 | 0 | 14.5 | 0 | 0 | 18 | 0 | 0 | 2.5 |
|
27-Sep-07
|
0 | 0 | 14.5 | 0 | 0 | 18 | 0 | 0 | 2.5 |
|
3-Oct-07
|
0 | 0 | 14.5 | 0 | 0 | 18 | 0 | 0 | 2.5 |
|
9-Oct-07
|
0 | 0 | 14.5 | 0 | 0 | 1 | 0 | 0 | 2.5 |
|
15-Oct-07
|
0 | 0 | 6.5 | 0 | 0 | 0 | 0 | 0 | 1 |
|
23-Oct-07
|
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
|
31-Oct-07
|
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
|
7-Nov-07
|
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
|
12-Nov-07
|
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
|
20-Nov-07
|
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
|
28-Nov-07
|
2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
|
30-Nov-07
|
0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 |
|
5-Dec-07
|
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
|
11-Dec-07
|
2 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 |
|
19-Dec-07
|
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
|
27-Dec-07
|
4 | 0 | 1 | 3 | 0 | 0 | 0 | 0 | 0 |
|
2-Jan-08
|
4 | 2 | 2 | 0 | 0 | 0 | 2 | 0 | 0 |
|
9-Jan-08
|
2 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
|
16-Jan-08
|
4 | 4 | 3 | 0 | 0 | 0 | 0 | 0 | 4 |
|
23-Jan-08
|
0 | 4 | 3 | 0 | 0 | 0 | 0 | 0 | 0 |
|
30-Jan-08
|
2 | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 0 |
|
6-Feb-08
|
5 | 2 | 4 | 0 | 0 | 0 | 0 | 0 | 0 |
|
13-Feb-08
|
0 | 2 | 4 | 0 | 0 | 0 | 0 | 0 | 0 |
|
21-Feb-08
|
0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 |
|
27-Feb-08
|
4 | 2 | 4 | 0 | 0 | 0 | 0 | 0 | 0 |
|
5-Mar-08
|
0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 |
|
12-Mar-08
|
2 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 |
|
19-Mar-08
|
0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 |
|
26-Mar-08
|
4 | 2 | 4 | 0 | 0 | 0 | 0 | 0 | 0 |
|
2-Apr-08
|
0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 |
|
9-Apr-08
|
5 | 2 | 4 | 0 | 0 | 0 | 0 | 0 | 0 |
|
16-Apr-08
|
0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 |
|
23-Apr-08
|
8 | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 |
|
30-Apr-08
|
0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 |
|
7-May-08
|
2 | 2 | 4 | 0 | 0 | 0 | 0 | 0 | 0 |
|
14-May-08
|
0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 |
|
21-May-08
|
0 | 0 | 3 | 0 | 0 | 0 | 2 | 0 | 0 |
|
28-May-08
|
6 | 0 | 4.5 | 0 | 0 | 0 | 0 | 0 | 0 |
|
4-Jun-08
|
2 | 2 | 4.5 | 2 | 0 | 0 | 4 | 0 | 0 |
|
11-Jun-08
|
0 | 0 | 3.5 | 0 | 0 | 0 | 0 | 0 | 0 |
|
18-Jun-08
|
0 | 0 | 3.5 | 0 | 0 | 0 | 0 | 0 | 0 |
|
25-Jun-08
|
4 | 2 | 3 | 2 | 0 | 0 | 0 | 0 | 0 |
Beach Enterococci data (orgs / 100 mL)
|
|
BEACH4
|
BEACH5
|
BEACH6
|
||||||
|---|---|---|---|---|---|---|---|---|---|
|
SAMPLE DATE
|
Day Result
|
30 d Median
|
75th
%ile |
Day Result
|
30 d Median
|
75th
%ile |
Day Result
|
30 d Median
|
75th
%ile |
|
3-Jul-07
|
2 | 10 | 0 | ||||||
|
11-Jul-07
|
6 | 0 | 0 | ||||||
|
19-Jul-07
|
0 | 42 | 2 | ||||||
|
24-Jul-07
|
0 | 4 | 0 | ||||||
|
27-Jul-07
|
90 | 2 | 130 | 10 | 2 | 0 | |||
|
2-Aug-07
|
58 | 6 | 94 | 42 | 4 | 2 | |||
|
8-Aug-07
|
16 | 16 | 8 | 42 | 0 | 2 | |||
|
14-Aug-07
|
49 | 49 | 30 | 30 | 39 | 2 | |||
|
20-Aug-07
|
0 | 49 | 0 | 30 | 14 | 4 | |||
|
28-Aug-07
|
0 | 16 | 40 | 30 | 0 | 4 | |||
|
5-Sep-07
|
0 | 0 | 32.5 | 0 | 8 | 41 | 0 | 0 | 3 |
|
13-Sep-07
|
0 | 0 | 32.5 | 0 | 0 | 41 | 0 | 0 | 3 |
|
21-Sep-07
|
0 | 0 | 32.5 | 0 | 0 | 41 | 0 | 0 | 3 |
|
27-Sep-07
|
0 | 0 | 32.5 | 0 | 0 | 35 | 0 | 0 | 3 |
|
3-Oct-07
|
0 | 0 | 32.5 | 6 | 0 | 35 | 0 | 0 | 3 |
|
9-Oct-07
|
0 | 0 | 8 | 2 | 0 | 19 | 0 | 0 | 2 |
|
15-Oct-07
|
0 | 0 | 0 | 0 | 0 | 7 | 0 | 0 | 0 |
|
23-Oct-07
|
0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0 |
|
31-Oct-07
|
0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
|
7-Nov-07
|
0 | 0 | 0 | 4 | 0 | 3 | 0 | 0 | 0 |
|
12-Nov-07
|
0 | 0 | 0 | 6 | 0 | 3 | 2 | 0 | 0 |
|
20-Nov-07
|
0 | 0 | 0 | 32 | 4 | 5 | 0 | 0 | 0 |
|
28-Nov-07
|
0 | 0 | 0 | 4 | 4 | 5 | 0 | 0 | 0 |
|
30-Nov-07
|
0 | 0 | 0 | 10 | 6 | 6 | 0 | 0 | 0 |
|
5-Dec-07
|
0 | 0 | 0 | 2 | 6 | 6 | 0 | 0 | 0 |
|
11-Dec-07
|
0 | 0 | 0 | 0 | 4 | 5 | 0 | 0 | 0 |
|
19-Dec-07
|
0 | 0 | 0 | 4 | 4 | 5 | 0 | 0 | 0 |
|
27-Dec-07
|
0 | 0 | 0 | 65 | 4 | 8 | 0 | 0 | 0 |
|
2-Jan-08
|
0 | 0 | 0 | 53 | 4 | 21 | 6 | 0 | 0 |
|
9-Jan-08
|
0 | 0 | 0 | 78 | 53 | 42.5 | 0 | 0 | 0 |
|
16-Jan-08
|
0 | 0 | 0 | 32 | 53 | 42.5 | 20 | 0 | 1 |
|
23-Jan-08
|
2 | 0 | 0 | 20 | 53 | 42.5 | 3 | 3 | 1.5 |
|
30-Jan-08
|
0 | 0 | 0 | 39 | 39 | 46 | 0 | 3 | 1.5 |
|
6-Feb-08
|
0 | 0 | 0 | 0 | 32 | 46 | 0 | 0 | 1.5 |
|
13-Feb-08
|
0 | 0 | 0 | 0 | 20 | 46 | 0 | 0 | 1.5 |
|
21-Feb-08
|
0 | 0 | 0 | 28 | 20 | 46 | 0 | 0 | 1.5 |
|
27-Feb-08
|
0 | 0 | 0 | 0 | 0 | 46 | 0 | 0 | 1.5 |
|
5-Mar-08
|
0 | 0 | 0 | 2 | 0 | 46 | 2 | 0 | 2.5 |
|
12-Mar-08
|
0 | 0 | 0 | 6 | 2 | 35.5 | 8 | 0 | 4.5 |
|
19-Mar-08
|
0 | 0 | 0 | 0 | 2 | 30 | 6 | 2 | 4.5 |
|
26-Mar-08
|
0 | 0 | 0 | 7 | 2 | 24 | 0 | 2 | 4.5 |
|
2-Apr-08
|
0 | 0 | 0 | 2 | 2 | 13.5 | 0 | 2 | 2.5 |
|
9-Apr-08
|
0 | 0 | 0 | 0 | 2 | 6.5 | 0 | 0 | 1 |
|
16-Apr-08
|
0 | 0 | 0 | 2 | 2 | 4 | 0 | 0 | 1 |
|
23-Apr-08
|
0 | 0 | 0 | 0 | 2 | 4 | 0 | 0 | 1 |
|
30-Apr-08
|
0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 1 |
|
7-May-08
|
0 | 0 | 0 | 2 | 0 | 2 | 0 | 0 | 1 |
|
14-May-08
|
0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 1 |
|
21-May-08
|
2 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 |
|
28-May-08
|
0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 |
|
4-Jun-08
|
0 | 0 | 0 | 2 | 0 | 2 | 0 | 0 | 0 |
|
11-Jun-08
|
0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 |
|
18-Jun-08
|
0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
|
25-Jun-08
|
2 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
Discharges to air
Outfall Pump Station Engine
The EPA Victoria discharge licence for the Eastern Treatment Plant requires that annual monitoring of at least one of the five outfall pump engine stacks when operating on sludge gas.
As part of the Eastern Green Energy Project, Melbourne water replaced three of its five outfall pump engines in 2006/07, with electrical motors thus eliminating emissions from the outfall pump station during normal operation. In 2007/08, Melbourne water converted the remaining two engines to operate on natural gas with 10 % diesel pilot fuel. These two engines will be used only during emergencies and breakdowns.
As there was no outfall engine operating on sludge gas, no sampling was conducted for outfall pump engine emission, as agreed by EPA.
Power Station Engine
During 2007/08, sludge gas was used primarily for the operation of the power engines in the power station.