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Appendix 2. Pesticides <strong>and</strong> degradation products analyzed, use, <strong>and</strong> occurrence in ground- <strong>and</strong> surface-<strong>water</strong> samples<br />

from the Mermentau River Basin, southwestern Louisiana, 1998-2001—Continued<br />

Pesticide or degradation product Use<br />

Number <strong>of</strong><br />

samples<br />

collected<br />

Dichlorprop H 29 0 36 0.0<br />

Dieldrin I 29 0 242 .8<br />

Dinoseb H 29 0 36 2.8<br />

Diphenamid H 29 0 36 33.3<br />

Disulfoton I 29 0 242 .0<br />

Diuron H 29 3 36 91.7<br />

EPTC H 29 0 242 11.6<br />

Ethalfluralin H 29 0 242 .0<br />

Ethoprophos I 29 0 242 5.4<br />

Fenuron H 29 0 36 .0<br />

Fipronil I 29 0 192 72.4<br />

Fipronil degradate RPA105048 I, DP 29 0 207 84.1<br />

Fipronil Sulfone I, DP 29 0 207 87.4<br />

Fipronil Sulfide I, DP 29 0 207 88.8<br />

Flumetsulam H 29 3 36 .0<br />

Fluometuron H 29 0 36 5.6<br />

Fon<strong>of</strong>os I 29 0 242 .0<br />

Imazaquin H 29 7 36 8.3<br />

Imazethapyr H 29 0 36 .0<br />

Imidacloprid I 29 0 36 .0<br />

Lindane I 29 0 242 .0<br />

Linuron H 29 0 242 .0<br />

Malathion I 29 3 242 19.4<br />

MCPA H 29 0 36 2.8<br />

MCPB H 29 0 36 .0<br />

Metalaxyl F 29 3 36 38.9<br />

Methiocarb I 29 0 36 .0<br />

Methomyl I 29 0 36 .0<br />

Methomyl oxime I, DP 29 0 36 .0<br />

Methyl-Azinphos I 29 0 242 .0<br />

Methyl-Parathion I 29 0 242 1.2<br />

Metolachlor H 29 7 242 92.6<br />

Metribuzin H 29 3 242 33.1<br />

Metsulfuron methyl H 29 0 36 .0<br />

Molinate H 29 0 242 86.4<br />

Napropamide H 29 0 242 2.1<br />

Neburon H 29 0 36 .0<br />

Nicosulfuron H 29 0 36 .0<br />

Norflurazon H 29 0 36 .0<br />

Oryzalin H 29 0 36 .0<br />

Oxamyl I, DP 29 0 36 .0<br />

52<br />

Ground <strong>water</strong> Surface <strong>water</strong><br />

Samples with<br />

detected<br />

concentrations<br />

(percent)<br />

Number <strong>of</strong><br />

samples<br />

collected<br />

Samples with<br />

detected<br />

concentrations<br />

(percent)

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