Preliminary Results from Surface Water
Monitoring with C.L.A.M. at the Spokane Tribal
Boundary in May and September of 2015
Presentation to SRRTTF TWG 1-6-16
Brandee Era-Miller
Washington State Department of Ecology
Environmental Assessment Program
Toxics Studies Unit
Results for total PCB congeners:
• Results are within the noise of the C.L.A.M. sampling system (SPE disk housing contamination)
• Concentrations represent totals from Lab (need to blank correct per project objectives)
• Blanks shown are either Trip or Transfer (most comparable to samples)
May 2015
September 2015
200
450
180
400
160
Picograms per Liter
Picograms per Liter
500
350
300
250
200
150
140
120
100
80
60
100
40
50
20
0
0
20 L
20 L
Blank
Blank CLAM
CLAM CLAM
20 L
20 L
Blank
CLAM
CLAM
PCB Homologue Example:
1400
• Mono and Di (lightest) and Nona and Deca (Heaviest) – no environmental signal
• Tri through Octa appear to have potential environmental signal above the noise
• Still need to look at this for all samples
1200
1000
800
20 liter C.L.A.M.
from May 2015
600
400
200
0
Mono Mono
Di
Di
Tri
Tri
Tetra
Tetra Penta Penta
Hexa
Hexa Hepta Hepta
Octa
Octa
Nona
Nona
Deca
Deca
Sample Blank Sample Blank Sample Blank Sample Blank Sample Blank Sample Blank Sample Blank Sample Blank Sample Blank Sample Blank
Results for PBDEs:
•
•
•
•
Blanks shown are either Trip or Transfer (most comparable to samples)
PBDE 47 appears to have strongest environmental signal above sampling system noise
PBDE 99 and 209 are in the sampling system noise for half of the samples
Still need to look at other PBDE congeners (40+)
September 2015
May 2015
35
60
PBDE 47
PBDE 47
Picograms per Liter
Picograms per Liter
30
25
20
15
50
40
30
20
10
5
10
0
0
20 L
20 L
Blank Blank CLAM CLAM CLAM
20 L
20 L
Blank
CLAM
CLAM
What Next?
• Use XAD-2 instead of C.L.A.M. for upcoming January sampling:
o See if results can get above the noise
o Upcoming Ecology study using XAD-2 at same location (Will Hobbs)
• Apply blank correction per project objectives and TWG input
• Look for patterns and information in homologues & congeners
• Summarize study information on C.L.A.M. QA/QC:
o Breakthrough SPE disk analysis
o Characterization of PCB contamination from disk housing
• EAP still evaluating appropriate use of C.L.A.M.
o May not be best tool for low-level PCBs
o Stainless steel SPE disk housing
o Waiting on results of AXYS blank study
How to Blank Correct?
• Report NJs per SRRTTF/LimnoTech QAPP, but do NJs get included in totals?
• If using NJs, then should we include NJ data in blank correction? Seems like a good idea.
• 3x blank rule used in SRRTTF/LimnoTech QAPP, but 3x rule is typically not used by labs.
5x and 10x are more typical.
• Examples below are from Spokane Tribal Boundary Monitoring Study.
Row Sample ID
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Parameter Name Result Qual UOM
Blank
1509068-10
PCB-001
21.8 B
pg/sample
3.85
1509068-10
PCB-002
27.8
pg/sample
2.5
1509068-10
PCB-003
32.6 B
pg/sample
3.88
1509068-10 Monochlorobiphenyls
1509068-10
PCB-194
1509068-10
PCB-195
1509068-10
PCB-196
1509068-10
PCB-197/200
1509068-10
PCB-198/199
1509068-10
PCB-201
1509068-10
PCB-202
1509068-10
PCB-203
1509068-10
PCB-204
1509068-10
PCB-205
1509068-10 Octachlorobiphenyls
1509068-11
PCB-183/185
5.84
1.75
3.07
1.5
8.13
0.932
2.36
4.17
0.5
0.5
NJ
J
J
NJ
NJ
J
UJ
UJ
4.23 NJ
pg/sample
pg/sample
pg/sample
pg/sample
pg/sample
pg/sample
pg/sample
pg/sample
pg/sample
pg/sample
pg/sample
pg/sample
pg/sample
1.14
0.72
1.08
0.5
2.69
0.5
0.5
1.87
0.5
0.5
Qual BtS Ratio 3x rule
J
5.662338
21.8
J
27.8
J
8.402062
32.6
82.2
NJ
5.122807
5.84
NJ
2.430556
1.75
NJ
2.842593
3.07
UJ
1.5
NJ
3.022305
8.13
UJ
0.932
UJ
2.36
NJ
2.229947
4.17
UJ
0.5
UJ
0.5
0.546 NJ
7.747253
Qual 5x rule
21.8
27.8
32.6
82.2
5.84
NJ
1.75
J
3.07
J
1.5
NJ
8.13
NJ
0.932
J
2.36
4.17
UJ
0.5
UJ
0.5
4.23 NJ
Qual 10x rule Qual
21.8 U
27.8
32.6 U
27.8
5.84
NJ
1.75 NJ
J
3.07 J
J
1.5 J
NJ
8.13 NJ
NJ
0.932 NJ
J
2.36 J
4.17
UJ
0.5 UJ
UJ
0.5 UJ
4.23 NJ
4.23 NJ
Comment / Question
Censor Example
Censor Example
Censor Example
Censor Example Homologue
5.84 or 5.84 U for 10x?
1.75 NJ or 1.75 U?
3.07 J or 3.07 UJ?
8.13 NJ or 8.13 U for 5/10x?
4.17 or 4.17 U?
Homologue total?
4.23 NJ and 4.23 U for 10x?