MN Water Science Center: Summary of pesticides in rain at all sites, May through September 1991.

Table 3.--Summary of pesticides in rain at all sites, May through September 1991.

[Total number of samples is 106 from 7 sites (Icelandic State Park, Ely, Marcell, Camp Ripley, Princeton, Rosemount, and Lamberton) Laboratory analysis conducted by Dee Mueller and Gary Horvath, Laboratory Services Division, Minnesota Department of Agriculture; mg/L, micrograms per liter; --, not determined]
Common name	Brand name	Percent detection	Maximum concentration ( mg/L)	Date of maximum concentration	Site of maximum concentration
Herbicides
Alachlor	Lasso	15	3.6	May 21	Rosemount
Cyanazine	Bladex	3	1.5	May 28	Lamberton
Atrazine	Aatrex	2	.82	July 2	Rosemount
Ethalfluralin	Sonalan	0	<.20	--	--
Metolachlor	Dual	0	<.10	--	--
Metribuzin	Sencor	0	<.20	--	--
Pendimethalin	Prowl	0	<.10	--	--
Prometon	Pramitol	0	<.10	--	--
Propachlor	Ramrod	0	<.25	--	--
Propazine	Milogard	0	<.25	--	--
Trifluralin	Treflan	0	<.10	--	--

Insecticides
Fonofos	Dyfonate	0	<.12	--	--
Lindane	Lindane	0	<.03	--	--
Terbufos	Counter	0	<.15	--	--

Fungicide
Chlorothalonil	Bravo	0	<.09	--	--

Table 3.--Summary of pesticides in rain at all sites, May through September 1991.

[Total number of samples is 106 from 7 sites (Icelandic State Park, Ely, Marcell, Camp Ripley, Princeton, Rosemount, and Lamberton) Laboratory analysis conducted by Dee Mueller and Gary Horvath, Laboratory Services Division, Minnesota Department of Agriculture; mg/L, micrograms per liter; --, not determined]

Common name

Brand name

Percent detection

Maximum concentration

( mg/L)

Date of maximum concentration

Site of maximum concentration

Herbicides

Alachlor

Lasso

3.6

May 21

Rosemount

Cyanazine

Bladex

1.5

May 28

Lamberton

Atrazine

Aatrex

.82

July 2

Rosemount

Ethalfluralin

Sonalan

<.20

Metolachlor

Dual

<.10

Metribuzin

Sencor

<.20

Pendimethalin

Prowl

<.10

Prometon

Pramitol

<.10

Propachlor

Ramrod

<.25

Propazine

Milogard

<.25

Trifluralin

Treflan

<.10

Insecticides

Fonofos

Dyfonate

<.12

Lindane

<.03

Terbufos

Counter

<.15

Fungicide

Chlorothalonil

Bravo

<.09

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