Jensen Updates
Turner/Jensen Updates • • • • • •
Concurrent Sampling Hydrosol Results Unusual Sfc Water Results from Crimora Instream Loading Calculations Reconsidering Plant Reach Sources Mapping Scour Routes
Concurrent Sfc H20 Sampling (Dupont, VDEQ, USGS) • September 6, 2005 • Two locations – Lyndhurst Ave, low/bkg Hg, 1 sample – Dooms, high Hg, 3 samples
• Three laboratories – StudioG/USGS ran THg and MHg – VDEQ ran THg only
• Each group provided samples to other two groups
• • • • •
Dupont and VDEQ “field filtered” USGS “lab filtered” Dupont used pump to sample USGS and VDEQ “dipped” samples Some results from USGS still pending
Studio Geochimica-Dooms
Total Hg (ng/L)
60 50 40
Dupont THg
30
VDEQ THg
20
USGS THg
10 0 12:45
14:00 Sample Time
15:00
10 8 Dupont DHg VDEQ DHg SG Filt
USGS Filt&Anal
2
SG Filt
4
USGS Filt &Anal
6 SG Filt
Total Dissolved Hg (hg/L)
Studio Geochimca-Dooms
0 12:45
14:00 Sample
15:00
USGS DHg-SG USGS DHg-GS
Hydrosol Results September 13, 2005
Total Mercury in Hydrosol 9/05 ug/g, dry wt 70 60 50 40 30 20 10
Station
IF or d
Po rt R.
G .P ar k
Cr im or a Fo re st ry Ha rri st on
Do om s
B. Pa rk
C. Pa rk
SR -R F
0
THg & MHg in Hydrosol 9/05 140 120 100 80
THg, ug/g
60
MHg, ng/g
40 20
Station
IF or d
C. Pa rk B. Pa rk Do om s Cr im or a Fo re str y Ha rri sto n G. Pa rk Po rt R.
SR -R F
0
Anomaly at Crimora September 18, 2005
Unusual THg/MeHg Results Near Crimora-Sept 2005 (ng/L)
Transect “BNK” DHg=11.1 DMeHg=1.08 9/18/05
WPT009 DHg=21.2/19.0 DMeHg=9.09/9.49 9/18/05
B&T “CR” THg=45.1 DHg=7.18 TMeHg=1.09 DMeHg=0.89 9/13/05
Station Fl ux C h
14 h
"0 "0 09" 09 "D up G Ox en b ic ow om D itc h
Pa rk 2n Ba dS sic t P Ka ark tie Co H re or se sh H oe ol lo Er wa od y ed F Ba nk Fo re st P R ry ep ub lic
C on st
Concentration, n
Dissolved Surface Water
Sept 2004 - "Transect" Sampling Averages
25
20
15 THg
MHg
10
5
0
Very
Preliminary River Loadings 4 Surface Water Sampling Events
• Assumptions – Used unfiltered THg concentration data at 14 stations and 4 sampling events – Interpolated discharges between SR-Ref and Harriston – Loading = Concentration * Discharge – Loading inputs between stations = Differences in loading between stations
Loading Inputs Between Key Sample Stations
Reaches SR-REF to Constitution Park Constitution Park to Dooms Dooms to Crimora Crimora to Harriston Harriston to Port Republic
RRM -1.5 to 0.3 0.3 to 5.5 5.5 to 10.5 10.5 to 17 17 to 25
4-Aug 1 14.6 -4.5 0.4 -3.8
Flood 04 1230 1689 374 2842 211
5-Feb 24.4 -14.1 14.4 -1.5 -5.9
5-Sep 1.2 12.9 -8 -0.3 -0.2
Loading Inputs Between Key Sample Stations Summer Base Flow Reaches SR-REF to Constitution Park Constitution Park to Dooms Dooms to Crimora Crimora to Harriston Harriston to Port Republic
RRM -1.5 to 0.3 0.3 to 5.5 5.5 to 10.5 10.5 to 17 17 to 25
4-Aug 1 14.6 -4.5 0.4 -3.8
Flood 04 1230 1689 374 2842 211
5-Feb 24.4 -14.1 14.4 -1.5 -5.9
5-Sep 1.2 12.9 -8 -0.3 -0.2
Loading Inputs Between Key Sample Stations Flood Flow Reaches SR-REF to Constitution Park Constitution Park to Dooms Dooms to Crimora Crimora to Harriston Harriston to Port Republic
RRM -1.5 to 0.3 0.3 to 5.5 5.5 to 10.5 10.5 to 17 17 to 25
4-Aug 1 14.6 -4.5 0.4 -3.8
Flood 04 1230 1689 374 2842 211
5-Feb 24.4 -14.1 14.4 -1.5 -5.9
5-Sep 1.2 12.9 -8 -0.3 -0.2
Loading Inputs Between Key Sample Stations Add Moderate Flow in Feb 05 Reaches SR-REF to Constitution Park Constitution Park to Dooms Dooms to Crimora Crimora to Harriston Harriston to Port Republic
RRM -1.5 to 0.3 0.3 to 5.5 5.5 to 10.5 10.5 to 17 17 to 25
4-Aug 1 14.6 -4.5 0.4 -3.8
Flood 04 1230 1689 374 2842 211
5-Feb 24.4 -14.1 14.4 -1.5 -5.9
5-Sep 1.2 12.9 -8 -0.3 -0.2
Very
Preliminary Loading Indications
• Higher THg inputs above Constitution Park at moderate to high flow • Minimal THg inputs above Constitution Park during 2 very low flow samplings • During flood of 9/04, inputs continued along entire South River below plant • During low to moderate flow, inputs limited to upper river to Dooms or Crimora
Plant Reach Main St
Wayne Ave
Plant
Plant Reach Possible Explanations for Plant Reach Loading Main St TSS Exchange with Sediments?
Rockfish Run?
Wayne Ave
Plant
Plant Reach Possible Explanations for Plant Reach Loading Main St
Scoured Floodplain?
Wayne Ave
Plant
Plant Reach Floodplain
Concurrent Sampling Hydrosol Results Unusual Sfc Water Results from Crimora Instream Loading Calculations Reconsidering Plant Reach Sources Mapping Scour Routes
Concurrent Sfc H20 Sampling (Dupont, VDEQ, USGS) • September 6, 2005 • Two locations – Lyndhurst Ave, low/bkg Hg, 1 sample – Dooms, high Hg, 3 samples
• Three laboratories – StudioG/USGS ran THg and MHg – VDEQ ran THg only
• Each group provided samples to other two groups
• • • • •
Dupont and VDEQ “field filtered” USGS “lab filtered” Dupont used pump to sample USGS and VDEQ “dipped” samples Some results from USGS still pending
Studio Geochimica-Dooms
Total Hg (ng/L)
60 50 40
Dupont THg
30
VDEQ THg
20
USGS THg
10 0 12:45
14:00 Sample Time
15:00
10 8 Dupont DHg VDEQ DHg SG Filt
USGS Filt&Anal
2
SG Filt
4
USGS Filt &Anal
6 SG Filt
Total Dissolved Hg (hg/L)
Studio Geochimca-Dooms
0 12:45
14:00 Sample
15:00
USGS DHg-SG USGS DHg-GS
Hydrosol Results September 13, 2005
Total Mercury in Hydrosol 9/05 ug/g, dry wt 70 60 50 40 30 20 10
Station
IF or d
Po rt R.
G .P ar k
Cr im or a Fo re st ry Ha rri st on
Do om s
B. Pa rk
C. Pa rk
SR -R F
0
THg & MHg in Hydrosol 9/05 140 120 100 80
THg, ug/g
60
MHg, ng/g
40 20
Station
IF or d
C. Pa rk B. Pa rk Do om s Cr im or a Fo re str y Ha rri sto n G. Pa rk Po rt R.
SR -R F
0
Anomaly at Crimora September 18, 2005
Unusual THg/MeHg Results Near Crimora-Sept 2005 (ng/L)
Transect “BNK” DHg=11.1 DMeHg=1.08 9/18/05
WPT009 DHg=21.2/19.0 DMeHg=9.09/9.49 9/18/05
B&T “CR” THg=45.1 DHg=7.18 TMeHg=1.09 DMeHg=0.89 9/13/05
Station Fl ux C h
14 h
"0 "0 09" 09 "D up G Ox en b ic ow om D itc h
Pa rk 2n Ba dS sic t P Ka ark tie Co H re or se sh H oe ol lo Er wa od y ed F Ba nk Fo re st P R ry ep ub lic
C on st
Concentration, n
Dissolved Surface Water
Sept 2004 - "Transect" Sampling Averages
25
20
15 THg
MHg
10
5
0
Very
Preliminary River Loadings 4 Surface Water Sampling Events
• Assumptions – Used unfiltered THg concentration data at 14 stations and 4 sampling events – Interpolated discharges between SR-Ref and Harriston – Loading = Concentration * Discharge – Loading inputs between stations = Differences in loading between stations
Loading Inputs Between Key Sample Stations
Reaches SR-REF to Constitution Park Constitution Park to Dooms Dooms to Crimora Crimora to Harriston Harriston to Port Republic
RRM -1.5 to 0.3 0.3 to 5.5 5.5 to 10.5 10.5 to 17 17 to 25
4-Aug 1 14.6 -4.5 0.4 -3.8
Flood 04 1230 1689 374 2842 211
5-Feb 24.4 -14.1 14.4 -1.5 -5.9
5-Sep 1.2 12.9 -8 -0.3 -0.2
Loading Inputs Between Key Sample Stations Summer Base Flow Reaches SR-REF to Constitution Park Constitution Park to Dooms Dooms to Crimora Crimora to Harriston Harriston to Port Republic
RRM -1.5 to 0.3 0.3 to 5.5 5.5 to 10.5 10.5 to 17 17 to 25
4-Aug 1 14.6 -4.5 0.4 -3.8
Flood 04 1230 1689 374 2842 211
5-Feb 24.4 -14.1 14.4 -1.5 -5.9
5-Sep 1.2 12.9 -8 -0.3 -0.2
Loading Inputs Between Key Sample Stations Flood Flow Reaches SR-REF to Constitution Park Constitution Park to Dooms Dooms to Crimora Crimora to Harriston Harriston to Port Republic
RRM -1.5 to 0.3 0.3 to 5.5 5.5 to 10.5 10.5 to 17 17 to 25
4-Aug 1 14.6 -4.5 0.4 -3.8
Flood 04 1230 1689 374 2842 211
5-Feb 24.4 -14.1 14.4 -1.5 -5.9
5-Sep 1.2 12.9 -8 -0.3 -0.2
Loading Inputs Between Key Sample Stations Add Moderate Flow in Feb 05 Reaches SR-REF to Constitution Park Constitution Park to Dooms Dooms to Crimora Crimora to Harriston Harriston to Port Republic
RRM -1.5 to 0.3 0.3 to 5.5 5.5 to 10.5 10.5 to 17 17 to 25
4-Aug 1 14.6 -4.5 0.4 -3.8
Flood 04 1230 1689 374 2842 211
5-Feb 24.4 -14.1 14.4 -1.5 -5.9
5-Sep 1.2 12.9 -8 -0.3 -0.2
Very
Preliminary Loading Indications
• Higher THg inputs above Constitution Park at moderate to high flow • Minimal THg inputs above Constitution Park during 2 very low flow samplings • During flood of 9/04, inputs continued along entire South River below plant • During low to moderate flow, inputs limited to upper river to Dooms or Crimora
Plant Reach Main St
Wayne Ave
Plant
Plant Reach Possible Explanations for Plant Reach Loading Main St TSS Exchange with Sediments?
Rockfish Run?
Wayne Ave
Plant
Plant Reach Possible Explanations for Plant Reach Loading Main St
Scoured Floodplain?
Wayne Ave
Plant
Plant Reach Floodplain
