some conclusions:
DESCRIPTION
Some conclusions: Glyphosate and AMPA: re-found in 15 out of 28 small water supply plants, where glyphosate and AMPA were found in 2001/2002. - PowerPoint PPT PresentationTRANSCRIPT
Some conclusions:• Glyphosate and AMPA: re-found in 15 out of 28 small water supply plants, where glyphosate and AMPA were found in 2001/2002.• Glyphosate and AMPA were found in 14 wells and in 1 drilling
located in the bottom of a well => wells are much more vulnerable compared to drillings extracting ground water from deeper reservoir’s.• Glyphosate and AMPA sources are presumably adjacent fields at 5 small water plants. At 4 plants the pollution originated from local
courtyards. The remaining sources were of different characters => every plant - it’s history.• Glyphosat/AMPA concentrations in the well water decreases with increasing distance to possible sources.• The well water were characterized by ground water originating from fractured till.
Background: Glyphosate and AMPA were found frequently in upper ground water reservoir’s in StorstømSmall Water Plants with findings of glyphosate / AMPA.
Plants with findings ofglyphosate or AMPA
Plants with findings 0,1 µg/l
Glyphosate ogAMPA
Plants analyzed forglyphosate/AMPA
number % number %KøbenhavnStorstrømSønderjyllandViborg
28193195199
3383
10
10,719,71,55
015
24
07,812
4 counties 615 54 8,8 21 3,4
Background: distribution of AMPA in 4 counties. (Map- thickness of sediments over chalk)
Background: BAM in small water plants (Map – pre quartenary, green = chalk)
New project implemented in 2005:
•38 small water plants with previous findings of glyphosate/AMPA in Storstrøm
•analytical program - Glyphosate/ AMPA, BAM, coliform bacteria, selected main components (NO3, SO4, Fe++, etc.)
•interview
•Hand drillings, sampling of ground water
•Multivariable statistic work
number Plants detailedinvestigated
Plants sampled 28 12Contact to ownernot possible
2
Plant closed 4Owner will notprecipitate
4
total 38 12
Glyphosate and AMPA re-found in 15 plants out of 28 investigated.
number %plantInvestigatedplants
0,01 -0,1 µg/l
=0,1µg/l Allfindings
active 20 3 6 45inactive 8 2 4 75totale 28 5 10
4 plants closed + 8 inactive = 12 plants not running=>
app. 30% of the previous investigated plants are closed
Distribution of glyphosate/AMPA in different types of plants 28 investigated
plants
numberPlant, typePlants
investigatedFindings findings
0,1 µg/ldrilling 5 0Drilling in well 5 2 1well 18 13 9total 28 15 10
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• Ko
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•København •Storstrøm •Sønderjylland •Viborg •Storstrøm ny
Glyphosate/AMPA, sample month and concentration.
Results from 2001/2002 and from Storstrøm 2005
glyphosat/AMPA mod prøveudtagningsdybde
0
2
4
6
8
10
12
14
0,001 0,01 0,1 1 10
glyphosat/AMPA uden fund
Glyphosate/AMPA With outfindings
With findingsconcentration in µg/l
water/sediment Samplesnumber
Samplenumber
MaximumGlyphosat
MaximumAMPA
sediment 26 5 0,05 0,36Water from plant 14 15 0,16 0,54Water from well 1 20 0,72 5,6Water from drain 0 2 0,26 0,2Water, handdrilling
14 5 0,015 0,09
Water from ditch 0 1 0,02 0,11
Glyphosate/AMPA concentrations and groundwater table in hand drillings and wells
Samples analyzed for glyphosate and AMPA
water samples with findings of E.coli and coliform bacteria.71 samples
Hand drilling – findings of coliform bacteria and E.coli against depth of water table in hand drillings. Maximum counted bacteria -160
coliform bacteria i different samples0 20 40 60 80 100
water from plant
water from well
water from drain
water from ditch
water from hand drilling
all samples
%
% coliforme bakterier % E.coli
Coliform against depth to water table in hand drillings
0
0,5
1
1,5
2
2,5
3
0 50 100 150 200
coliforme E.coli
Possible source areas
possible sources
0 1 2 3 4 5
tiling/courtyard
ditch
courtyard
courtyard/field
run way
field
under hedge
number
Concentration and distance to possible scource. Water samples with findings of glyphosate/AMPA from wells and plants.Detection limit 0,01µg/l
distance to possible scource and concentration in plant/well
0,01
0,1
1
10
0 5 10 15 20 25
distance in meter
ko
nc
i µ
g/l
.
glyhhosat AMPA
Geological description Isseg. – ice segmentation in till
Plantnr.
geology fractures Isseg. open macro pores Upper grv.Transport
possiblescource
a1 Till Stronglyfractured
fissil Worm burrows Till field
a3 Till Stronglyfractured
fissil Worm burrows Till field
a4 Till silt Stronglyfractured
no RootchannelWorm burrows
ML silt sand ditch
a5 Till fractured fissil RootchannelWorm burrows
Till Tiling/ Court yard
a7 Till/sand Stronglyfractured
nej Worm burrowsRootchannel
Till sand Court yard
a9 Till Stronglyfractured
fissil RootchannelWorm burrows
Till field
a10 Till/sand Stronglyfractured
fissil RootchannelWorm burrows
Till sand Court yard /field
a12 Till Weaklyfractured
fissil Worm burrows Till Under hedge
a13 Till/sand Stronglyfractured
fissil RootchannelWorm burrowsdisincrection
Till sand field
a14 Till Stronglyfractured
no RootchannelWorm burrows
Till Run way/ entrance
a15 Till/ gytja Weakly/Strongly fractured
Poss. fissil Worm burrows Till Court yard
a16 Till/sand Stronglyfractured
no Worm burrows Sand Till Court yard