MN Water Science Center: Summary of pesticides in rain at all sites, May through September 1993.

Table 5.--Summary of pesticides in rain at all sites, May through September 1993.

[Total number of samples is 77 from 5 sites (Park Rapids, Princeton, Minneapolis, Crystal Springs, and Lamberton) Laboratory analysis conducted at the University of Minnesota; 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	74	12	May 25	Lamberton
Atrazine	Aatrex	71	2.9	June 25	Princeton
Metolachlor	Dual	61	.92	June 8	Lamberton
Metribuzin	Sencor	39	.05	July 13	Lamb./Park R.
EPTC	Eradicane	35	1.4	May 25	Lamberton
Cyanazine	Bladex	30	3.5	June 15	Lamberton
Ethalfluralin	Sonalan	29	.08	June 25	Princeton
Pendimethalin	Prowl	27	1.4	June 8	Lamberton
Triallate	Far-Go	25	.26	July 13	Lamberton
Propachlor	Ramrod	23	.32	May 25	Minneapolis
Simazine	Princep	21	1.3	June 15	Princeton
Propazine	Milogard	18	.06	June 15	Princeton
Terbacil	Sinbar	10	1.4	May 18	Lamberton
Propanil	Erban	9	.11	August 24	Park Rapids
Tebuthiuron	Spike	5	.03	September 14	Park Rapids
Trifluralin	Treflan	5	0	June 15	Lamberton
Prometon	Pramitol	3	.02	August 24	Lamb./Park R.
Butylate	Sutan+	1	.03	June 8	Lamberton
Benfluralin	Benefin	0	<.01	--	--
Pebulate	Tillam	0	<.01	--	--
Insecticides
Methyl parathion	Penncap-M	40	.15	June 15	Princeton
Chlorpyrifos	Lorsban	19	.08	June 8	Lamberton
Terbufos	Counter	14	.29	June 22	Park Rapids
Malathion	Cythion	6	.10	July 29	Princeton
Ethoprop	Mocap	5	.03	June 16	Crystal Springs
Phorate	Thimet	1	.01	July 13	Lamberton
Diazinon	Diazinon	0	<.01	--	--
Lindane	Lindane	0	<.02	--	--
Azinphos-methyl	Guthion	0	<.02	--	--
Permethrin	Ambush	0	<.01	--	--

Table 5.--Summary of pesticides in rain at all sites, May through September 1993.

[Total number of samples is 77 from 5 sites (Park Rapids, Princeton, Minneapolis, Crystal Springs, and Lamberton) Laboratory analysis conducted at the University of Minnesota; 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

May 25

Lamberton

Atrazine

Aatrex

2.9

June 25

Princeton

Metolachlor

Dual

.92

June 8

Lamberton

Metribuzin

Sencor

.05

July 13

Lamb./Park R.

EPTC

Eradicane

1.4

May 25

Lamberton

Cyanazine

Bladex

3.5

June 15

Lamberton

Ethalfluralin

Sonalan

.08

June 25

Princeton

Pendimethalin

Prowl

1.4

June 8

Lamberton

Triallate

Far-Go

.26

July 13

Lamberton

Propachlor

Ramrod

.32

May 25

Minneapolis

Simazine

Princep

1.3

June 15

Princeton

Propazine

Milogard

.06

June 15

Princeton

Terbacil

Sinbar

1.4

May 18

Lamberton

Propanil

Erban

.11

August 24

Park Rapids

Tebuthiuron

Spike

.03

September 14

Park Rapids

Trifluralin

Treflan

June 15

Lamberton

Prometon

Pramitol

.02

August 24

Lamb./Park R.

Butylate

Sutan+

.03

June 8

Lamberton

Benfluralin

Benefin

<.01

Pebulate

Tillam

<.01

Insecticides

Methyl parathion

Penncap-M

.15

June 15

Princeton

Chlorpyrifos

Lorsban

.08

June 8

Lamberton

Terbufos

Counter

.29

June 22

Park Rapids

Malathion

Cythion

.10

July 29

Princeton

Ethoprop

Mocap

.03

June 16

Crystal Springs

Phorate

Thimet

.01

July 13

Lamberton

Diazinon

<.01

Lindane

<.02

Azinphos-methyl

Guthion

<.02

Permethrin

Ambush

<.01

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