Sawpit Creek Sewage Treatment Plant

Environment Protection Licence no. 447

STATE OF NEW SOUTH WALES (OFFICE OF ENVIRONMENT AND HERITAGE)

Kosciuszko Road, Perisher Valley, NSW, 2624

(view this licence)

2011-2012

Monitoring point 1 - discharge to groundwater effluent quality monitoring

The outlet from the final treatment pond to an underground absorption trench view map (SCSTPmonpoints.pdf, 823kb)

Sample Date	pH	Nitrogen (ammonia) mg/L	Nitrogen (total) mg/L	Phosphorus (total) mg/L	Total suspended solids mg/L	Biochemical oxygen demand mg/L	Oil & grease mg/L	Faecal coliforms cfu/100mL	Date Obtained	Date Published
12-Oct-11	9.0	<0.1	2.9	0.16	12	6	<1	<2	18-Oct-11	07-Jun-12
26-Oct-11	9.4	<0.1	2.5	0.17	24	9	<1	2	01-Nov-11	07-Jun-12
09-Nov-11			no	discharge	pond	filling
07-Dec-11	7.8	<0.1	0.7	0.03	<2	<2	<1	<2	13-Dec-11	07-Jun-12
04-Jan-12	7.3	0.6	0.7	0.02	<2	<2	<1	<2	11-Jan-12	07-Jun-12
01-Feb-12	7.6	<0.1	0.8	0.19	<2	<2	<1	<2	07-Feb-12	07-Jun-12
29-Feb-12	6.8	<0.1	5.2	0.15	4	<2	<1	<1	17-Mar-12	07-Jun-12
28-Mar-12	8.2	<0.1	1.5	0.09	5	5	<1	34	03-Apr-12	07-Jun-12
26-Apr-12	7.1	1.1	4.6	0.06	4	4	<1	10	02-May-12	07-Jun-12
23-May-12	8.5	<0.1	11	0.24	18	9	3	40	31-May-12	07-Jun-12
20-June-12	7.5	0.2	1.6	0.09	8	<2	<1	<2	27-Jun-12	09-Jul-12
18-July-12	7.6	0.1	10.0	0.21	13	5	<1	4	24-Jul-12	02-Aug-12
15-Aug-12	8.3	<0.1	6.2	0.28	15	12	<1	8	21-Aug-12	29-Aug-12
12-Sept-12	7.9	<0.1	5.3	0.59	27	4	<2	30	18-Sep-12	24-Sep-12
Concentration limit (90%ile)	6.5-9.0	2	10	0.3	15	10	2	200
Concentration limit (100%ile)	6.5-9.0	3	15	2	35	30	10	600

Monitoring point 2 - ambient water quality monitoring

Sawpit Creek upstream view map (SCSTPmonpoints.pdf, 823kb)

Sample Date	pH	Nitrogen (ammonia) mg/L	Nitrogen (total) mg/L	Phosphorus (total) mg/L	Total suspended solids mg/L	Biochemical oxygen demand mg/L	Faecal coliforms cfu/100mL	Date Obtained	Date Published
12-Oct-11	7.3	<0.1	0.11	0.01	2	<2	8	18-Oct-11	07-Jun-12
26-Oct-11	7.2	<0.1	0.24	0.02	9	<2	48	1-Nov-11	07-Jun-12
9-Nov-11	7.2	<0.1	0.24	0.02	9	<2	48	15-Nov-11	07-Jun-12
7-Dec-11	7.3	<0.1	0.12	0.01	<2	<2	2	13-Dec-11	07-Jun-12
4-Jan-12	7.4	<0.1	0.12	0.01	2	<2	18	11-Jan-12	07-Jun-12
1-Feb-12	7.3	<0.1	0.22	0.01	3	<2	42	07-Feb-12	07-Jun-12
29-Feb12	7.1	<0.1	0.41	0.04	10	<2	360	17-Mar-12	07-Jun-12
28-Mar-12	7.3	<0.1	0.14	0.02	4	<2	10	03-Apr-12	07-Jun-12
26-April-12	7.2	<0.1	0.14	0.01	2	<2	4	02-May-12	07-Jun-12
23-May-12	7.4	<0.1	0.07	<0.01	<2	<2	6	31-May-12	07-Jun-12
20-June-12	7.1	<0.1	0.10	0.01	<2	<2	4	27-Jun-12	09-Jul-12
18-July-12	7.2	<0.1	0.1	<0.01	2	<2	<2	24-Jul-12	02-Aug-12
15-Aug-12	7.3	<0.1	0.09	<0.01	<2	<2	4	21-Aug-12	29-Aug-12
12-Sept-12	7.1	<0.1	0.09	<0.01	<2	<2	14	18-Sep-12	24-Sep-12

Monitoring point 3 - ambient water quality monitoring

Sawpit Creek downstream view map (SCSTPmonpoints.pdf, 823kb)

Sample   Date	pH	Nitrogen (ammonia) mg/L	Nitrogen (total) mg/L	Phosphorus (total) mg/L	Total suspended solids mg/L	Biochemical oxygen demand mg/L	Faecal coliforms cfu/100mL	Date Obtained	Date Published
12-Oct-11	7.3	<0.1	0.11	0.01	2	<2	4	18-Oct-11	07-Jun-12
26-Oct-11	7.3	<0.1	0.22	0.02	7	<2	50	01-Nov-11	07-Jun-12
9-Nov-11	7.3	<0.1	0.22	0.02	7	<2	50	15-Nov-11	07-Jun-12
7-Dec-11	7.3	<0.1	0.12	0.01	2	<2	10	13-Dec-11	07-Jun-12
4-Jan-12	7.4	<0.1	0.11	0.01	<2	<2	20	11-Jan-12	07-Jun-12
1-Feb-12	7.3	<0.1	0.21	0.01	3	<2	36	07-Feb-12	07-Jun-12
29-Feb-12	7.1	<0.1	0.45	0.03	11	<2	560	17-Mar-12	07-Jun-12
28-Mar-12	7.3	<0.1	0.14	0.02	4	<2	14	03-Apr-12	07-Jun-12
26-April-12	7.2	<0.1	0.14	0.01	2	<2	4	02-May-12	07-Jun-12
23-May-12	7.4	<0.1	0.07	<0.01	<2	<2	14	31-May-12	07-Jun-12
20-June-12	7.1	<0.1	0.11	0.01	<2	<2	<2	27-Jun-12	09-Jul-12
18-July-12	7.2	<0.1	0.1	<0.01	2	<2	2	24-Jul-12	02-Aug-12
15-Aug-12	7.1	<0.1	0.09	<0.01	2	<2	10	21-Aug-12	29-Aug-12
12-Sept-12	7.1	<0.1	0.10	<0.01	<2	<2	<2	18-Sep-12	24-Sep-12