OHL York Joint Venture Environmental Licence Monitoring Data Environment Protection Licence No 20388 Data for the Month: January 2015 Data published: February 2015 *NTU pH (unit) Oil and Grease (Visibility) 05/01/2015 3.7 8.0 No 3300 05/01/2015 -4.0 8.2 No 4860 05/01/2015 -3.8 8.3 No 4700 05/01/2015 -3.3 8.1 No Unnamed Creek Sump 4630 05/01/2015 22 8.4 No Sump 2.80 2790 05/01/2015 12.7 8.3 No Farm Dam 70 Sch Rd 2510 05/01/2015 13 7.8 No Settling Tanks Unnamed Creek 4700 06/01/2015 6.4 8.2 No TB 5.50 5570 06/01/2015 32 8.3 No 4710 06/01/2015 27 8.4 No 4710 07/1/2015 22 8.4 No Farm Dam 70 Sch Rd 2510 13/01/2015 26.6 8.3 No TB 5.50 5570 13/01/2015 28.4 8.1 No Sump behind Culvert Ch4200 4130 14/01/2015 42 8.0 No Farm Dam 70 Sch Rd 2510 14/01/2015 23 7.9 No Sump 2.80 2790 14/01/2015 28 8.0 No Basin ID Approx. Chainage Date of Discharge Culvert Ch4200 4200 Boundary Rd Sump Sewer underbore pit Settling Tanks Unnamed Creek Railway Terrace South Railway Terrace South (Lab) Total Suspended Solids (mg/L) 17 11 OHL York Joint Venture I Schofields Road Upgrade Stage 2 37 Schofields Road, Schofields NSW 2762 I PO Box 6275 Rouse Hill Town Centre NSW 2155 For more information or enquiries please email dmalysiak@ohlaustralia.com Comment *NTU pH (unit) Oil and Grease (Visibility) 15/01/2015 2.6 7.5 No 4710 15/01/2015 17 8.2 No 4700 16/01/2015 20.8 8.2 No 4730 16/01/2015 11 8.2 No Boundary Rd Sump 3300 16/01/2015 27.5 8.1 No Boundary Rd Sump 3300 17/01/2015 18.8 8.3 No Bridge Street Lap Pool 5050 17/01/2015 20.2 8.2 No Railway Terrace North 4730 17/01/2015 8.2 8.3 No Bridge Street Lap Pool 5050 20/01/2015 27.2 8.3 No Settling Tanks Unnamed Creek 4700 30/01/2015 17 8.1 No Sump 2.80 2790 30/01/2015 11 8.0 No Culvert Ch2515 2515 30/01/2015 47.6 8.1 No 4700 31/01/2015 9.5 8.1 No 4710 31/01/2015 7 8.1 No Culvert Ch4200 4200 31/01/2015 6.1 8.3 No Culvert Ch2515 2515 31/01/2015 21.7 8.2 No Basin ID Approx. Chainage Date of Discharge Culvert Ch4200 4200 Railway Terrace South Settling Tanks Unnamed Creek Railway Terrace North Settling Tanks Unnamed Creek Railway Terrace South (Lab) Total Suspended Solids (mg/L) Comment 11 Water sample sent to the laboratory for analysis Pollutant TSS *NTU pH Oil and Grease Concentration Limit 50 40 6.5 – 8.5 Not visible mg/L = milligrams per litre N/A = Not applicable NV = Not visible ND = No Discharge DNS = Did Not Sample TSS = Total Suspended Solids (mg/L) *NTU = Nephelometric Turbidity Units A correlation graph between TSS and NTU has been established for the site. Using a 50% safety factor, an NTU reading of 40 has been adopted to ensure samples have a TSS of below 50mg/L. OHL York Joint Venture I Schofields Road Upgrade Stage 2 37 Schofields Road, Schofields NSW 2762 I PO Box 6275 Rouse Hill Town Centre NSW 2155 For more information or enquiries please email dmalysiak@ohlaustralia.com