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NATIONAL DRINKING WATER CONTAMINANT OCCURRENCE
DATABASE
Public Right to Know - Ambient Water
Contaminant Query
| Public Right to Know Query Results |
| Ambient Source Water Data |
| National |
| Report Generated: 12-Sep-2000 |
ug/L- Micrograms per liter
| Result |
# of Analysis |
# of Stations w/Analysis |
Units |
Min |
Max |
Average |
Std. Dev. |
| Lindane
Dissolved |
| Estimated |
2 |
2 |
|
|
|
|
|
| Detect |
6 |
6 |
ug/l |
.004 |
.15 |
.0523 |
.0542 |
| Non-Detect |
5727 |
4449 |
|
|
|
|
|
| Lindane
Total(Water) |
| Detect |
10 |
10 |
ug/l |
.01 |
1.9 |
.304 |
.6402 |
| Non-Detect |
1086 |
605 |
|
|
|
|
|
*LINDANE DISSOLVED
http://www.epa.gov:9966/ncod/rpt_options_ambient_pkg.national_state_selection
Key:
Result - generally what was analyzed. Sometime you'll see
"dissolved lindane". This is basically the same
as lindane as all lindane will be dissolved at the concentrations we are talking
about.
# of analysis - the number of samples that were
analyzed.
Detect - the amount of lindane was present above the
amount that could be detected. The detection level can
range from 10 parts per trillion (ng/l)to 10 parts per billion (ug/l).
Non-detect - the amount of lindane present was too low to be detected.
# of stations with analysis - this appears to be the number of
different places at which they sampled.
Units - units for the lindane results. mg/l (milligrams per liter)
means parts per million. ug/l (microgram per liter) means part per billion. ng/l
(nanograms per liter) means parts per trillion.
Min - minimum value that was detected
Max - maximum value that was detected
Average - average of the detected values
Std. Dev - standard deviation. Tells how much scatter there is in the
data.
In interpreting the data, keep in mind that lindane discharged to water
bodies that are potential drinking water sources should have less than 19 parts
per trillion (same as 0.019 parts per billion) of lindane. Other water bodies
should have less than 63 parts per trillion (0.063 parts per billion) of lindane.
Key is courtesy of Ann
Heil LACSD.
NATIONAL
Criterion Maximum Concentration for Freshwater = 2000 ppt (set to protect
aquatic life)
Criterion Continuous Concentration for Freshwater = 80 ppt
Human Health Criterion for Consumption of Water and Organisms = 19 ppt
(set to protect human health at a one-in-a-million lifetime cancer risk, based
on a one-in-a-million lifetime cancer risk for a 70 kg person drinking 2 liters
of water per day and eating 6.5 grams per day of fish and shellfish)
Human Health Criterion for Consumption of Organisms only = 63 ppt
(set to protect human health at a one-in-a-million lifetime cancer risk, based
on a one-in-a-million lifetime cancer risk for a 70 kg person eating 6.5 grams
per day of fish and shellfish)
EXPLANATION
Criterion Maximum Concentration equals the highest concentration of a
pollutant to which aquatic life can be exposed for a short period of time
without deleterious effects. Criteria Continuous Concentration equals the
highest concentration of a pollutant to which aquatic life can be exposed for an
extended period of time (4 days) without deleterious effects.
Pesticides Found in Ground Water in the Interagency Study
http://www.ibiblio.org/arc/pestgroundwater.htm
http://www.epa.gov/region4/waste/oftecser/ecolbul.htm
http://www.pirg.org/reports/enviro/waters98/page7.htm
REASONABLY ANTICIPATED TO BE CARCINOGEN:
LINDANE AND OTHER HEXACHLOROCYCLOHEXANE ISOMERS
http://ntp-server.niehs.nih.gov/htdocs/ARC/ARC_RAC/Lindane.html
In 1995 we conducted another study in which we sampled rainfall
and air. In the air, we separated the particles from the vapors so we had air
particles, air vapors and rainfall. We had two sites in Mississippi, one in the
city of Jackson and one out at the Delta, where a lot of cotton is grown. We had
two sites in Iowa; one on a building in Iowa City, and one at the Cedar Rapids
Airport. We had a site in downtown Minneapolis, one at an ag site near
Princeton, and one on the south shore of Eagle Harbor. That was our way down
wind site. We analyzed for 49 pesticides in the air. We had detection levels
down on the order of a tenth of a nanogram per cubic meter; that's a very, very
low level. We detected 37 pesticides, including the common ones like alachlor
and atrazine. We also found a lot of insecticides; carbaryl, carbofuran,
chlorpyrifos (which is used for termites,) lindane, DDE, a degradate of
DDT, which is no longer being applied but is still volatilizing from the soil
and appearing in air samples that we collect.
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