MN Water Science Center: Pesticides in rain near Crystal Springs, Minnesota, April through September 1994.

USGS Water Science Center, Minnesota

Table 16.--Pesticides in rain near Crystal Springs, Minnesota, April through September 1994.

[Total number of samples is 22; mg/L, micrograms per liter; --, not detected]
Common name	Brand name	Percent detections	Maximum concentration ( mg/L)	Median concentration ( mg/L)	Date of maximum concentration
Herbicides
Atrazine	Aatrex	86	1.3	0.11	May 31
Alachlor	Lasso	82	.70	.08	May 17
Cyanazine	Bladex	73	3.2	.10	May 31
Metolachlor	Dual	50	.56	.03	May 17
Metribuzin	Sencor	50	.25	.02	August 2
Acetochlor	Harness	32	.46	.04	April 26
Pendimethalin	Prowl	32	.07	.04	May 31
Propazine	Milogard	27	.02	.02	July 19
EPTC	Eradicane	18	.04	.02	May 10
Ethalfluralin	Sonalan	18	.04	.03	July 25
Propachlor	Ramrod	18	.02	.02	May 17
Simazine	Princep	18	.01	.01	August 2
Prometon	Pramitol	14	.02	.01	September 20
Butylate	Sutan+	9	.02	.02	October 4
Pebulate	Tillam	9	.02	.02	June 14
Terbacil	Sinbar	5	.03	--	September 20
Benfluralin	Benefin	0	<.01	--	--
Propanil	Erban	0	<.01	--	--
Tebuthiuron	Spike	0	<.01	--	--
Triallate	Far-Go	0	<.01	--	--
Trifluralin	Treflan	0	<.01	--	--

Insecticides
Azinphos-methyl	Guthion	55	.85	.07	May 10
Methyl parathion	Penncap-M	36	.13	.02	June 14
Lindane	Lindane	27	.10	.03	August 2
Terbufos	Counter	27	.02	.02	May 10
Fonofos	Dyfonate	23	.04	.02	July 19
Chlorpyrifos	Lorsban	14	.06	.01	August 2
Permethrin	Ambush	5	.01	--	June 28
Malathion	Cythion	0	<.02	--	May 17
Diazinon	Diazinon	0	<.01	--	--
Ethoprop	Mocap	0	<.01	--	--
Phorate	Thimet	0	<.01	--	--

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