HomeMy WebLinkAbout1987-11-25 Water Quality Report►
minnesota department of health
717t.«.(Mawar**t. p.o. box 9441 minnoopoUt S5440
(6121623-SOOO
November 25, 1987
Mr. unilam Farley
350 South BroMD Road
Long Lake, Minneso
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Dear Mr. Farley:
Enclosed are the results of analyses conducted on water samples collected from
your well. The well was sampled as part of a monitoring program establish^
by the Metropolitan Landfill Abatement Act. The water samples have been
analyzed for the presence of 54 volatile organic chemicals and seven Indicator
parameters.
Volatile organic chemicals were not detected In the samples. The concentra
tions of the Indicator parameters were within the range of background water
quality.
He have enclosed a copy of the analysis report, and a water quality Informa
tion summary. Should you wish additional Information, please contact Ron
Thompson at 612/623-5264.
Sincerely yours.
c r.
Sister Mary Madonna Ashton
Commissioner of Health
JMMA:RDT:cad
Enclosures
cc: Gordon Meyer, Minnesota Pollution Control Agency
Senator Gen Olson
Representative John Burger
Mark Andrew, Chair, Hennepin County Board of Commissioners
Hennepin County Board of Health /
James Grabek, Mayor, City of Orono^''
an equal opportunity amployar
-
HINNESOTA DEPARTMENT OF HEALTH GROUND-WATER
Form SSU-3
ITORING - VOC SAMPLE/ANALYSIS REPOff
Rev. 9-«
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p*xylene
chloroatthane
vinyl chlerlde
chloreethtne
d Uhl erodi f1 yoroat thine
broaoaethine
dUh I oref 1 uoroat then#
atihyltnt chloride
illylchlerlde
1.1-dUhleretthine
cl !• 1 »2*dUh!eroethy1ene
le2-d1chieroethine
lolol*trlch1eretthine
hfoaedl chi ereaethene
2 0 l-dUh1 ore* 1-propene
1 f l*df chlore* l*propene
lolp2*tr1ch1ereethylent
Result (ue/l)
% ^ «■ a
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Code ^ Result (uo/ll□ m
□ []
□ I]
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B[|
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□ []□ C3
P□ []
□ I]
□ []
VOC
chlorodibroaoatthine
cl$-l,3-d1chloro-
1-propene
2-ch1oreethylv1nyl ether Q [] ____
1.1.1.2- tetrach1oroethine Q [ ]
l.l.2,2*tetrichloroethane Q [j
pentachloroethtne
1.1.2- trUhlorotrl-
fluoreethane
1 eZ-dUhlorobenitne
trichiorofluoroaethane
1 • 1-dUh1oroethy1ene
trans-lo2-
dichloroeth/ltne
chlorofora
dibroaoaethane
carbon tetrachloride
dUhloroacetoni tri 1e
1.2*d1ch1oropropane
trans*l»3*d1ch1oro*
l*propene
Io3*d1ch1oropropane
l»lp2-tr1ch1oroethane
1.2*d1broaoethane
broaofora
1•2 0 3* tr1 ch1 oropropane
R
§
San Result (ag/1 unless
Paraaeter otherwise noted)
nltrate^nltrite nitrogen <L O . ^ Q
•aaonia nitrogen _ _ _ JQ
chloride
*«>'•»• ____L id.
Iron _______L 3Z
tetrachloroethylene Q c ]_ _ _ _ _•_ _
chlorobenxene Q Q ]
1•3-d1chlorobenxene F 1 _ _ _ _ _ _ _ _ _ _ _._ _ _ _ _
1•4-dlchlorobenxene C I 1nn
, . □□_ _ _ _._ _
Analyses Result (ag/1 unless
Reouested Code Parameter otherwise noted)
□□□
specific conductance
pH
A.2.O._ _umho/cn.
MINNESOTA DEPARTMENT OF HEALTH
WATER QUALITY PARAMETERS
VOLATILE ORGANIC CMEHICALS (VOC's) arc a large group of low boiling point, carbon-containing, predomi
nantly manmade substances. VOC's are contained in a wide variety of industrial, commercial, and resi
dential products including: cleaners, degreasers, paints, solvents, inks, and petroleum distillates.
VOC's do not normally occur in groundwater. Their presence usually signifies contamination from
improper use, storage, disposal, spillage or leakage cf solvents or petroleum products. VOC's vary
widely in their toxicity and drinking water concentration standards.
NITRATE ANO NITRITE NITROGEN is used as one of the principal indicators of water quality. Nitrate
is the stable foiTn of nitrogen in oxygenated groundwater. Nitrite presents a particular health threat
to infants. Sources of nitrogen include: municipal and industrial wastes, landfill leachate, animal
and human wastes, nitrogen fertilizers, decomposition of organic matter and dissolution of nitrogen-
containing soil and rocks. Background concentrations* in Minnesota groundwaters range from less than
0.4 milligrams per liter (mg/1) to 140 mg/1 with a mean of 2.7 mg/1. A primary drinking water standard
of 10 mg/1 has been established for public water supplies.
AfiNMIA, a compound of nitrogen and hydrogen, is generally found in low concentrations in groundwater
due to oxidation to nitrate and adsorption to soil pa*‘ticles. High concentrations of aanonia may
represent oxygen depleted water or rapid introduction of ammonia fertilizers, animal or human wastes,
or leaching of solid wastes.
CHLORIDE is one of the major inorganic anions in water. Chloride is very soluble and will move through
groundwater with little attenuation. The presence of chloride in groundwater may be due to natural
salts in soils or rocks, or leaching of chemical fertilizers, solid wastes or highway deicing salts.
Background chloride concentrations in Minnesota groundwaters range from 0.3 mg/1 to 490 mg/1, with
a mean of 19.2 mg/1. The secondary drinking water standard (recofimended guideline) for public water
supplies is 2S0 mg/1.
.SULPHATE occurs almost universally in groundwater. Rainfall may contain 10 mg/1 or more sulphate.
Household wastes, including detergents, may add 10 mg/1 or more sulphate to sewage. The usual source
in groundwater is naturally occurring sulphates of gypsum or anhydrite. Background concentrations
of sulphate in Minnesota groundwaters range from O.S mg/1 to 1300 rog/1 with a mean of 72 mg/1. The
secondary drinking water standard for public water supplies is 2S0 mg/1.
IRON is a commonly found constituent in groundwaters, primarily derived from weathering of soil and
rocks. High concentrations can be due to corrosive water or leaching of wastes. Background concen
trations in Minnesota groundwaters range f/om less than 0.03 mg/1 to 46 mg/1 with a mean of 1.3 mg/1.
The secondary drinking water standard for public water supplies is 0.3 mg/1.
SPECIFIC CONOUCTANCE is a measure of the ability of water to conduct an electric current. This ability
depends on the presence, concentration, and chemical state tC Wastewater and leachate typically
have high concentrations of dissolved material (ions) and high specific conductance. Back
ground specific conductance in Minnesota groundwaters rangi*’ SO to 2S00 micromhos per centimeter
(umho/cm) with a mean of 630 iimho/cm. Specific conductance is often us?d to estimate total dissolved
solids (TOS) by multiplying specific conductance by .6. The secondary drinking water standard for
public water supplies is SOO mg/1 TOS.
pH is a measure of the hydrogen ion activity of water. pH less than 7 represents acid conditions.
pH greater than 7 represents alkaline or basic conditions. Background pH levels in Minnesota ground-
waters range from 5.9 to 9.4 with a mean of 7.5. The secondary drinking water standard for public
water supplies is 6.5 to 8.5.
*Background concentrations represent water quality values from 413 wells and springs sampled throughout
Minnesota in the Minnesota Pollution Control Agency's Ground Walir Quality Monitoring Program.
MHI) 710 tM 19R6