MN Water Science Center: Pesticides in rain, Minneapolis near Lake Harriet, Minnesota, April through October 1994.

USGS Water Science Center, Minnesota

Table 18.--Pesticides in rain, Minneapolis near Lake Harriet, Minnesota, April through October 1994.

[Total number of samples is 23; 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	96	0.74	0.20	July 5
Alachlor	Lasso	87	.53	.13	May 17
Metribuzin	Sencor	74	1.1	.02	June 14
Cyanazine	Bladex	61	6.2	.06	May 17
Metolachlor	Dual	39	.38	.09	May 17
EPTC	Eradicane	35	.10	.03	June 14
Pendimethalin	Prowl	35	.19	.02	May 17
Simazine	Princep	26	.02	.01	June 14
Propachlor	Ramrod	22	.13	.07	May 3
Acetochlor	Harness+	17	.03	.01	May 17
Propazine	Milogard	13	.02	.02	April 26
Ethalfluralin	Sonalan	4	.08	--	April 26
Prometon	Pramitol	4	.01	--	August 2
Trifluralin	Treflan	4	.01	--	June 14
Terbacil	Sinbar	4	.02	--	May 17
Benfluralin	Benefin	0	<.01	--	--
Butylate	Sutan+	0	<.01	--	--
Pebulate	Tillam	0	<.01	--	--
Propanil	Erban	0	<.01	--	--
Tebuthiuron	Spike	0	<.01	--	--
Triallate	Far-Go	0	<.01	--	--

Insecticides
Methyl parathion	Penncap-M	48	.49	.03	June 14
Terbufos	Counter	17	.06	.02	April 26
Chlorpyrifos	Lorsban	13	.02	.02	October 25
Azinphos-methyl	Guthion	9	.17	.10	April 26
Fonofos	Dyfonate	4	.05	--	April 26
Permethrin	Ambush	4	.01	--	June 14
Phorate	Thimet	4	.01	--	April 26
Lindane	Lindane	0	<.02	--	--
Diazinon	Diazinon	0	<.01	--	--
Ethoprop	Mocap	0	<.01	--	--
Malathion	Cythion	0	<.02	--	--

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