APPENDIX E: Road Surface Runoff Calculations from Carriageway Monitoring Results
Date and Time of Sampling:	05/01/2008  01:00 - 03:07		Weather Condition:	Fine
Parameter \ Composite	1st	2nd	3rd	4th	Water Truck (Reference)*
Suspended Solids (mg/L)	17	10	5	4	<2
Suspended Solids due to road cleaning(mg/L)	17	10	5	4	0
Mean Value of Suspended Solids (mg/L) **	9
Nitrite & Nitrate (mg/L) #	2.34	1.81	1.60	1.53	1.33
Nitrite & Nitrate due to road cleaning (mg/L)	1.01	0.48	0.27	0.20	1.33
Mean Value of Nitrite & Nitrate (mg/L) **	0.49
Total Kjeldahl Nitrogen (mg/L)	1.2	1.0	0.8	0.5	< 0.1
Total Kjeldahl Nitrogen due to road cleaning (mg/L)	1.2	1.0	0.8	0.5	0.0
Mean Value of Total Kjeldahl Nitrogen (mg/L) **	0.9
Total Phosphorus (mg/L)	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1
Total Phosphorus due to road cleaning (mg/L)	< 0.1	< 0.1	< 0.1	< 0.1	0.0
Mean Value of Total Phosphorus (mg/L) **	0.1
Total Organic Carbon (mg/L)	33	19	10	4	< 1
Total Organic Carbon due to road cleaning (mg/L)	33	19	10	4	0
Mean Value of Total Organic Carbon (mg/L) **	17
Chemical Oxygen Demand (mg/L)	35	27	14	11	2
Chemical Oxygen Demand due to road cleaning (mg/L)	33	25	12	9	2
Mean Value of Chemical Oxygen Demand (mg/L) **	20
Copper (mg/L)	0.010	0.006	0.005	0.004	0.002
Copper due to road cleaning (mg/L)	0.008	0.004	0.003	0.002	0.002
Mean Value of Copper (mg/L) **	0.004
Lead (mg/L)	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01
Lead due to road cleaning (mg/L)	< 0.01	< 0.01	< 0.01	< 0.01	0.00
Mean Value of Lead (mg/L) **	0.01
Zinc (mg/L)	0.15	0.10	0.07	0.06	0.04
Zinc due to road cleaning(mg/L)	0.11	0.06	0.03	0.02	0.04
Mean Value of Zinc (mg/L) **	0.06
Remark #	Nitrite: 0.02 mg/L Nitrate: 2.32 mg/L	Nitrite: < 0.01 mg/L Nitrate: 1.80 mg/L	Nitrite: < 0.01 mg/L Nitrate: 1.59 mg/L	Nitrite: < 0.01 mg/L Nitrate: 1.52 mg/L	Nitrite: < 0.01 mg/L Nitrate: 1.32 mg/L
* The concentration of pollutant of the reference sample was assigned to be zero when its concentration is below the detection limit.
** Pollutants that were present in the samples at concentrations at concentrations below the detection limit were assigned the value of the detection limit when event mean concentrations (EMC) were calculated.
Date and Time of Sampling:	12/01/2008  01:00 - 03:45		Weather Condition:	Fine
Parameter \ Composite	1st	2nd	3rd	4th	Water Truck (Reference)
Suspended Solids (mg/L)	14	11	4	3	< 2
Suspended Solids due to road cleaning(mg/L)	14	11	4	3	0
Mean Value of Suspended Solids (mg/L) **	8
Nitrite & Nitrate (mg/L) #	2.64	2.08	1.79	1.74	1.50
Nitrite & Nitrate due to road cleaning (mg/L)	1.14	0.58	0.29	0.24	1.50
Mean Value of Nitrite & Nitrate (mg/L) **	0.56
Total Kjeldahl Nitrogen (mg/L)	1.4	0.9	0.6	0.5	< 0.1
Total Kjeldahl Nitrogen due to road cleaning (mg/L)	1.4	0.9	0.6	0.5	0.0
Mean Value of Total Kjeldahl Nitrogen (mg/L) **	0.9
Total Phosphorus (mg/L)	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1
Total Phosphorus due to road cleaning (mg/L)	< 0.1	< 0.1	< 0.1	< 0.1	0.0
Mean Value of Total Phosphorus (mg/L) **	0.1
Total Organic Carbon (mg/L)	10	7	4	4	< 1
Total Organic Carbon due to road cleaning (mg/L)	10	7	4	4	0
Mean Value of Total Organic Carbon (mg/L) **	6
Chemical Oxygen Demand (mg/L)	32	17	8	8	< 2
Chemical Oxygen Demand due to road cleaning (mg/L)	32	17	8	8	0
Mean Value of Chemical Oxygen Demand (mg/L) **	16
Copper (mg/L)	0.011	0.007	0.004	0.004	0.001
Copper due to road cleaning (mg/L)	0.010	0.006	0.003	0.003	0.001
Mean Value of Copper (mg/L) **	0.006
Lead (mg/L)	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01
Lead due to road cleaning (mg/L)	< 0.01	< 0.01	< 0.01	< 0.01	0.00
Mean Value of Lead (mg/L) **	0.01
Zinc (mg/L)	0.17	0.11	0.06	0.06	0.02
Zinc due to road cleaning(mg/L)	0.15	0.09	0.04	0.04	0.02
Mean Value of Zinc (mg/L) **	0.08
Remark #	Nitrite: 0.02 mg/L Nitrate: 2.62 mg/L	Nitrite: < 0.01 mg/L Nitrate: 2.07 mg/L	Nitrite: < 0.01 mg/L Nitrate: 1.78 mg/L	Nitrite: < 0.01 mg/L Nitrate: 1.73 mg/L	Nitrite: < 0.01 mg/L Nitrate: 1.49 mg/L
* The concentration of pollutant of the reference sample was assigned to be zero when its concentration is below the detection limit.
** Pollutants that were present in the samples at concentrations at concentrations below the detection limit were assigned the value of the detection limit when event mean concentrations (EMC) were calculated.
Date and Time of Sampling:	19/01/2008  01:00 - 02:37		Weather Condition:	Fine
Parameter \ Composite	1st	2nd	3rd	4th	Water Truck (Reference)
Suspended Solids (mg/L)	40	20	9	7	< 2
Suspended Solids due to road cleaning(mg/L)	40	20	9	7	0
Mean Value of Suspended Solids (mg/L) **	19
Nitrite & Nitrate (mg/L) #	3.08	1.95	2.05	1.83	1.48
Nitrite & Nitrate due to road cleaning (mg/L)	1.60	0.47	0.57	0.35	1.48
Mean Value of Nitrite & Nitrate (mg/L) **	0.75
Total Kjeldahl Nitrogen (mg/L)	0.6	0.4	0.4	0.2	< 0.1
Total Kjeldahl Nitrogen due to road cleaning (mg/L)	0.6	0.4	0.4	0.2	0.0
Mean Value of Total Kjeldahl Nitrogen (mg/L) **	0.4
Total Phosphorus (mg/L)	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1
Total Phosphorus due to road cleaning (mg/L)	< 0.1	< 0.1	< 0.1	< 0.1	0.0
Mean Value of Total Phosphorus (mg/L) **	0.1
Total Organic Carbon (mg/L)	20	12	10	7	< 1
Total Organic Carbon due to road cleaning (mg/L)	20	12	10	7	0
Mean Value of Total Organic Carbon (mg/L) **	12
Chemical Oxygen Demand (mg/L)	98	37	22	17	< 2
Chemical Oxygen Demand due to road cleaning (mg/L)	98	37	22	17	0
Mean Value of Chemical Oxygen Demand (mg/L) **	44
Copper (mg/L)	0.018	0.010	0.008	0.005	0.001
Copper due to road cleaning (mg/L)	0.017	0.009	0.007	0.004	0.001
Mean Value of Copper (mg/L) **	0.009
Lead (mg/L)	0.02	0.01	< 0.01	< 0.01	< 0.01
Lead due to road cleaning (mg/L)	0.02	0.01	< 0.01	< 0.01	0.00
Mean Value of Lead (mg/L) **	0.01
Zinc (mg/L)	0.20	0.13	0.11	0.08	0.03
Zinc due to road cleaning(mg/L)	0.17	0.10	0.08	0.05	0.03
Mean Value of Zinc (mg/L) **	0.10
Remark #	Nitrite: < 0.01 mg/L Nitrate: 3.07 mg/L	Nitrite: < 0.01 mg/L Nitrate: 1.94 mg/L	Nitrite: < 0.01 mg/L Nitrate: 2.04 mg/L	Nitrite: < 0.01 mg/L Nitrate: 1.82 mg/L	Nitrite: < 0.01 mg/L Nitrate: 1.47 mg/L
* The concentration of pollutant of the reference sample was assigned to be zero when its concentration is below the detection limit.
** Pollutants that were present in the samples at concentrations at concentrations below the detection limit were assigned the value of the detection limit when event mean concentrations (EMC) were calculated.
Date and Time of Sampling:	16/02/2008  01:15 - 03:00		Weather Condition:	Fine
Parameter \ Composite	1st	2nd	3rd	4th	Water Truck (Reference)
Suspended Solids (mg/L)	18	11	6	4	< 2
Suspended Solids due to road cleaning(mg/L)	18	11	6	4	0
Mean Value of Suspended Solids (mg/L) **	10
Nitrite & Nitrate (mg/L) #	2.31	1.84	1.77	1.72	1.59
Nitrite & Nitrate due to road cleaning (mg/L)	0.72	0.25	0.18	0.13	1.59
Mean Value of Nitrite & Nitrate (mg/L) **	0.32
Total Kjeldahl Nitrogen (mg/L)	1.4	1.1	0.6	0.6	< 0.1
Total Kjeldahl Nitrogen due to road cleaning (mg/L)	1.4	1.1	0.6	0.6	0.0
Mean Value of Total Kjeldahl Nitrogen (mg/L) **	0.9
Total Phosphorus (mg/L)	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1
Total Phosphorus due to road cleaning (mg/L)	< 0.1	< 0.1	< 0.1	< 0.1	0.0
Mean Value of Total Phosphorus (mg/L) **	0.1
Total Organic Carbon (mg/L)	8	5	4	3	1
Total Organic Carbon due to road cleaning (mg/L)	7	4	3	2	1
Mean Value of Total Organic Carbon (mg/L) **	4
Chemical Oxygen Demand (mg/L)	30	14	12	8	< 2
Chemical Oxygen Demand due to road cleaning (mg/L)	30	14	12	8	0
Mean Value of Chemical Oxygen Demand (mg/L) **	16
Copper (mg/L)	0.012	0.007	0.008	0.006	0.004
Copper due to road cleaning (mg/L)	0.008	0.003	0.004	0.002	0.004
Mean Value of Copper (mg/L)	0.004
Lead (mg/L)	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01
Lead due to road cleaning (mg/L)	< 0.01	< 0.01	< 0.01	< 0.01	0.00
Mean Value of Lead (mg/L) **	0.01
Zinc (mg/L)	0.13	0.09	0.08	0.06	0.18
Zinc due to road cleaning(mg/L)	0.00	0.00	0.00	0.00	0.18
Mean Value of Zinc (mg/L) **	0.00
Remark #	Nitrite: 0.03 mg/L Nitrate: 2.28 mg/L	Nitrite: < 0.01 mg/L Nitrate: 1.83 mg/L	Nitrite: < 0.01 mg/L Nitrate: 1.76 mg/L	Nitrite: < 0.01 mg/L Nitrate: 1.71 mg/L	Nitrite: < 0.01 mg/L Nitrate: 1.58 mg/L
* The concentration of pollutant of the reference sample was assigned to be zero when its concentration is below the detection limit.
** Pollutants that were present in the samples at concentrations at concentrations below the detection limit were assigned the value of the detection limit when event mean concentrations (EMC) were calculated.
Date and Time of Sampling:	23/02/2008  01:00 - 02:10		Weather Condition:	Fine
Parameter \ Composite	1st	2nd	3rd	4th	Water Truck (Reference)
Suspended Solids (mg/L)	28	10	12	7	< 2
Suspended Solids due to road cleaning(mg/L)	28	10	12	7	0
Mean Value of Suspended Solids (mg/L) **	14
Nitrite & Nitrate (mg/L) #	2.35	1.96	1.91	1.90	1.81
Nitrite & Nitrate due to road cleaning (mg/L)	0.54	0.15	0.10	0.09	1.81
Mean Value of Nitrite & Nitrate (mg/L) **	0.22
Total Kjeldahl Nitrogen (mg/L)	1.1	0.8	0.6	0.6	0.1
Total Kjeldahl Nitrogen due to road cleaning (mg/L)	1.0	0.7	0.5	0.5	0.1
Mean Value of Total Kjeldahl Nitrogen (mg/L) **	0.7
Total Phosphorus (mg/L)	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1
Total Phosphorus due to road cleaning (mg/L)	< 0.1	< 0.1	< 0.1	< 0.1	0.0
Mean Value of Total Phosphorus (mg/L) **	0.1
Total Organic Carbon (mg/L)	12	6	4	3	< 1
Total Organic Carbon due to road cleaning (mg/L)	12	6	4	3	0.0
Mean Value of Total Organic Carbon (mg/L) **	6
Chemical Oxygen Demand (mg/L)	67	50	36	11	< 2
Chemical Oxygen Demand due to road cleaning (mg/L)	67	50	36	11	0.0
Mean Value of Chemical Oxygen Demand (mg/L) **	41
Copper (mg/L)	0.017	0.010	0.007	0.006	0.003
Copper due to road cleaning (mg/L)	0.014	0.007	0.004	0.003	0.003
Mean Value of Copper (mg/L) **	0.007
Lead (mg/L)	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01
Lead due to road cleaning (mg/L)	< 0.01	< 0.01	< 0.01	< 0.01	0.0
Mean Value of Lead (mg/L) **	0.01
Zinc (mg/L)	0.10	0.06	0.05	0.04	0.02
Zinc due to road cleaning(mg/L)	0.08	0.04	0.03	0.02	0.02
Mean Value of Zinc (mg/L) **	0.04
Remark #	Nitrite: 0.07 mg/L Nitrate: 2.28 mg/L	Nitrite: 0.02 mg/L Nitrate: 1.94 mg/L	Nitrite: 0.01 mg/L Nitrate: 1.90 mg/L	Nitrite: < 0.01 mg/L Nitrate: 1.89 mg/L	Nitrite: < 0.01 mg/L Nitrate: 1.80 mg/L
* The concentration of pollutant of the reference sample was assigned to be zero when its concentration is below the detection limit.
** Pollutants that were present in the samples at concentrations at concentrations below the detection limit were assigned the value of the detection limit when event mean concentrations (EMC) were calculated.
Date and Time of Sampling:	01/03/2008  01:06 - 02:39		Weather Condition:	Fine
Parameter \ Composite	1st	2nd	3rd	4th	Water Truck (Reference)
Suspended Solids (mg/L)	5	7	4	2	< 2
Suspended Solids due to road cleaning(mg/L)	5	7	4	2	0
Mean Value of Suspended Solids (mg/L) **	5
Nitrite & Nitrate (mg/L) #	1.92	1.81	1.76	1.72	1.67
Nitrite & Nitrate due to road cleaning (mg/L)	0.25	0.14	0.09	0.05	1.67
Mean Value of Nitrite & Nitrate (mg/L) **	0.13
Total Kjeldahl Nitrogen (mg/L)	0.9	0.2	< 0.1	< 0.1	< 0.1
Total Kjeldahl Nitrogen due to road cleaning (mg/L)	0.9	0.2	< 0.1	< 0.1	0
Mean Value of Total Kjeldahl Nitrogen (mg/L) **	0.3
Total Phosphorus (mg/L)	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1
Total Phosphorus due to road cleaning (mg/L)	< 0.1	< 0.1	< 0.1	< 0.1	0
Mean Value of Total Phosphorus (mg/L) **	0.1
Total Organic Carbon (mg/L)	7	4	2	2	< 1
Total Organic Carbon due to road cleaning (mg/L)	7	4	2	2	0
Mean Value of Total Organic Carbon (mg/L) **	4
Chemical Oxygen Demand (mg/L)	22	10	5	5	2
Chemical Oxygen Demand due to road cleaning (mg/L)	20	8	3	3	2
Mean Value of Chemical Oxygen Demand (mg/L) **	9
Copper (mg/L)	0.009	0.005	0.005	0.005	0.004
Copper due to road cleaning (mg/L)	0.005	0.001	0.001	0.001	0.004
Mean Value of Copper (mg/L) **	0.002
Lead (mg/L)	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01
Lead due to road cleaning (mg/L)	< 0.01	< 0.01	< 0.01	< 0.01	0.00
Mean Value of Lead (mg/L) **	0.01
Zinc (mg/L)	0.06	0.04	0.03	0.03	0.02
Zinc due to road cleaning(mg/L)	0.04	0.02	0.01	0.01	0.02
Mean Value of Zinc (mg/L) **	0.02
Remark #	Nitrite: < 0.01 mg/L Nitrate: 1.91 mg/L	Nitrite: < 0.01 mg/L Nitrate: 1.80 mg/L	Nitrite: < 0.01 mg/L Nitrate: 1.75 mg/L	Nitrite: < 0.01 mg/L Nitrate: 1.71 mg/L	Nitrite: < 0.01 mg/L Nitrate: 1.66 mg/L
* The concentration of pollutant of the reference sample was assigned to be zero when its concentration is below the detection limit.
** Pollutants that were present in the samples at concentrations at concentrations below the detection limit were assigned the value of the detection limit when event mean concentrations (EMC) were calculated.