Test results for FOCUS_TOXSWA_2.2.1

Standard drainage and runoff input files are used for this test[1]. These are coupled to a less and a more persistent compound in water, respectively FOCUS Compound A_sw and H_sw.

1. Model output for 3 applications of 1 kg/ha of FOCUS Compound A_sw to winter cereals (maize for R2) with the first appln at the day around emergence

Scenario executed at 16-Nov-2005	Appln date (not changed)	Water		Sediment
		Global max (μg/L) [Date]	TWAC 28 d (μg/L)	Global max (μg/L) [Date]
D1-Ditch	3-Oct-1982 23-Oct-1982 5-Nov-1982	225.322 22-Nov-1982	144.921	57.592 25-Nov-1982
D1-Stream	3-Oct-1982 23-Oct-1982 5-Nov-1982	157.715 13-Nov-1982	100.997	39.094 25-Nov-1982
D2-Ditch	3-Nov-1986 28-Nov-1986 8-Dec-1986	466.838 12-Dec-1986	156.592	69.059 15-Dec-1986
D2-Stream	3-Nov-1986 28-Nov-1986 8-Dec-1986	333.303 11-Dec-1986	102.087	44.020 15-Dec-1986
D3-Ditch	22-Nov-1992 28-Nov-1992 10-Dec-1992	29.885 22-Nov-1992	25.777	8.797 10-Dec-1992
D4-Pond	28-Sep-1985 4-Oct-1985 26-Oct-1985	31.201 21-Dec-1985	23.758	9.366 23-Dec-1985
D4-Stream	28-Sep-1985 4-Oct-1985 26-Oct-1985	102.111 9-Dec-1985	75.326	26.290 21-Dec-1985
D5-Pond	27-Nov-1978 18-Dec-1978 01-Jan-1979	42.088 12-Feb-1979	18.308	9.965 14-Feb-1979
D5-Stream	27-Nov-1978 18-Dec-1978 01-Jan-1979	70.481 11-Feb-1979	40.855	17.582 13-Feb-1979
D6-Ditch	6-Dec-1986 30-Dec-1986 14-Jan-1987	156.174 19-Jan-1987	26.258	15.289 19-Jan-1987
R1-Pond	14-Nov-1978 20-Nov-1978 27-Nov-1978	1.100 25-Nov-1978	0.251	0.163 28-Nov-1978
R1-Stream	14-Nov-1978 20-Nov-1978 27-Nov-1978	92.865 25-Nov-1978	1.487	5.628 25-Nov-1978
R2-Stream	26-Apr-1977 7-May-1977 20-May-1977	35.806 13-May-1977	1.031	2.844 13-May-1977
R3-Stream	5-Dec-1980 11-Dec-1980 20-Dec-1980	161.811 16-Dec-1980	4.679	10.440 16-Dec-1980
R4-Stream	5-Nov-1979 10-Dec-1979 24-Dec-1979	10.770 21-Dec-1979	0.246	0.758 21-Dec-1979

2. Model output for 3 applications of 1 kg/ha of FOCUS Compound H_sw to winter cereals (maize for R2) with the first appln at the day around emergence

Scenario executed at 17-Nov-2005	Appln date (not changed)	Water			Sediment
		Global max (μg/L) [Date]	TWAC 28 d (μg/L)	Global max (μg/L) [Date]
D1-Ditch	3-Oct-1982 23-Oct-1982 5-Nov-1982	246.886 20-Nov-1982	164.766	222.821 27-Nov-1982
D1-Stream	3-Oct-1982 23-Oct-1982 5-Nov-1982	158.426 13-Nov-1982	102.158	126.212 27-Nov-1982
D2-Ditch	3-Nov-1986 28-Nov-1986 8-Dec-1986	470.635 12-Dec-1986	175.340	259.823 31-Dec-1986
D2-Stream	3-Nov-1986 28-Nov-1986 8-Dec-1986	333.837 11-Dec-1986	102.840	153.179 31-Dec-1986
D3-Ditch	22-Nov-1992 28-Nov-1992 10-Dec-1992	33.145 22-Nov-1992	30.046	88.787 11-Jan-1993
D4-Pond	28-Sep-1985 4-Oct-1985 26-Oct-1985	127.139 31-Jan-1986	123.278	286.937 5-Apr-1986
D4-Stream	28-Sep-1985 4-Oct-1985 26-Oct-1985	102.289 9-Dec-1985	75.577	110.523 30-Jan-1986
D5-Pond	27-Nov-1978 18-Dec-1978 01-Jan-1979	110.710 17-Feb-1979	106.070	232.143 1-May-1979
D5-Stream	27-Nov-1978 18-Dec-1978 01-Jan-1979	70.554 11-Feb-1979	41.027	72.715 11-Apr-1979
D6-Ditch	6-Dec-1986 30-Dec-1986 14-Jan-1987	157.164 19-Jan-1987	28.960	58.952 20-Jan-1987
R1-Pond	14-Nov-1978 20-Nov-1978 27-Nov-1978	1.462 27-Nov-1978	1.281	1.845 2-Feb-1979
R1-Stream	14-Nov-1978 20-Nov-1978 27-Nov-1978	93.610 25-Nov-1978	1.508	12.218 25-Nov-1978
R2-Stream	26-Apr-1977 7-May-1977 20-May-1977	36.198 13-May-1977	1.047	6.500 13-May-1977
R3-Stream	5-Dec-1980 11-Dec-1980 20-Dec-1980	163.022 16-Dec-1980	4.774	22.984 16-Dec-1980
R4-Stream	5-Nov-1979 10-Dec-1979 24-Dec-1979	10.816 21-Dec-1979	0.249	1.662 21-Dec-1979

For substance A_sw the results of v1.1.1 and v2.2.1 are exactly the same.

For substance H_sw the PECs calculated with v1.1.1 and v2.2.1 differ slightly for most runs. The largest differences in global max if found for the D1-Ditch scenario, which is 0.206 mg/L lower than the corresponding global max of FOCUS_TOXSWA v1.1.1. The largest difference in TWAC 28 d is found for the D2-Ditch scenario, which is 0.253 mg/L higher than the corresponding TWAC 28 d of FOCUS_TOXSWA v1.1.1. The differences in calculated PECs are due to the tighter selection of the calculation time steps in the water layer for substances with Koc values between 10 and 100 L/kg (Koc of H_sw is 100 L/kg) (See the ‘Differences between TOXSWA_2.2.1 and TOXSWA_1.1.1’ document, item m1). The differences in PECs between v1.1.1 and v2.2.1 are smaller than 0.2%, so considered not significant.

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[1] Please note that these runs are intended as a test for the TOXSWA software only. They do not correspond to sensible, consistent step 3 FOCUS runs that can be used for risk assessment purposes. (E.g. because PRZM and MACRO do calculations for a pesticide with D-sw properties, while TOXSWA performs calculations for a pesticide with A-sw or H-sw properties.)