THE GROUNDWATER REMEDIATION SYSTEM (GRS)
MONITORING AND OPERATIONS PROGRAM
SEMI-ANNUAL ENGINEERING REPORT
FOR THE PERIOD JANUARY 1, 2007 THROUGH JUNE 30, 2007
AT
LUVATA GRENADA LLC (OEM PLANT)
GRENADA, MISSISSIPPI
PURSUANT TO MISSISSIPPI DEPARTMENT OF ENVIRONMENTAL QUALITY
(MDEQ)
AGREED ORDER 2875-94
DATED JULY 19, 1994
FOR
LUVATA GRENADA LLC
GRENADA, MISSISSIPPI
HAZCLEAN Report No. 07.0306.52
October, 2007
THE GROUNDWATER REMEDIATION SYSTEM (GRS)
MONITORING AND OPERATIONS PROGRAM
SEMI-ANNUAL ENGINEERING REPORT
FOR THE PERIOD JANUARY 1, 2007 THROUGH JUNE 30, 2007
AT
LUVATA GRENADA LLC (OEM PLANT)
GRENADA, MISSISSIPPI
PURSUANT TO MISSISSIPPI DEPARTMENT OF ENVIRONMENTAL QUALITY
(MDEQ)
AGREED ORDER 2875-94
DATED JULY 19, 1994
FOR
LUVATA GRENADA LLC
GRENADA, MISSISSIPPI
___________________________________
E. Corbin McGriff, Ph.D., P.E.
President and Director of Operations
_________________________________
State of Mississippi Registered
Professional Engineer No. 5690
___________________________________
Michael A. Noone, RPG
Geological Services Manager
_________________________________
State of Mississippi Registered
Professional Geologist No. 0162
Prepared by
HAZCLEAN ENVIRONMENTAL CONSULTANTS, INC.
P. O. Box 16485
Jackson, Mississippi 39236-6485
(601) 922-0766
HAZCLEAN Report No. 07.0306.52
October, 2007
TABLE OF CONTENTS
Page
1.0
INTRODUCTION ................................................................................................... 1
1.1
Background................................................................................................ 1
1.2
Remedial System Review and Modification ............................................... 2
2.0
GROUNDWATER REMEDIATION SYSTEM (GRS) DESIGN SUMMARY ........... 4
3.0
OPERATIONS, MAINTENANCE AND MONITORING ACTIVITIES ..................... 6
3.1
Operations and Maintenance ..................................................................... 6
3.2
GRS Performance Summary ..................................................................... 6
3.3
NPDES Influent and Effluent Sampling Summary ..................................... 7
4.0
GROUNDWATER SAMPLING SUMMARY .......................................................... 8
4.1
Monitoring Well Sampling Activities Summary ........................................... 8
4.2
Groundwater Levels and Vacuum Readings............................................ 12
5.0
SITE RESPONSE TO TREATMENT .................................................................. 13
5.1
Total TCE Mass Removed (Vapor and Groundwater) ............................ 13
5.2
TCE Mass Removed from Groundwater .................................................. 13
5.3
TCE Mass Removed as Vapor ................................................................ 14
5.4
GRS Treatment Summary ....................................................................... 14
6.0
REMEDIAL PROGRESS EVALUATION ............................................................. 15
6.1
Operations Summary ............................................................................... 15
6.2
Findings ................................................................................................... 16
TABLES:
Table 1:
Table 1-1:
Table 1-2:
Table 1-3:
Table 1-4:
Groundwater Elevation Summary Monitoring and
Recovery Wells (June, 2007) ........................................................ 17
Groundwater Elevation Summary Monitoring and
Recovery Wells (Stratigraphic Layer 1)
(June, 2007) .................................................................................. 24
Groundwater Elevation Summary Monitoring and
Recovery Wells (Stratigraphic Layer 2)
(June, 2007) .................................................................................. 26
Groundwater Elevation Summary Monitoring and
Recovery Wells (Stratigraphic Layer 3)
(June, 2007) .................................................................................. 29
Groundwater Elevation Summary Monitoring and
Recovery Wells (Stratigraphic Layer 4)
(June, 2007) .................................................................................. 32
i
TABLE OF CONTENTS
(Continued)
Page
Table 1-5:
Table 2:
Table 2-1:
Table 2-2:
Table 2-3:
Table 2-4:
Table 2-5:
Table 3:
Table 3-1:
Table 3-2:
Table 3-3:
Table 3-4:
Table 3-5:
Table 4:
Table 4-1:
Table 4-2:
Table 4-3:
Table 4-4:
Table 4-5:
Table 5:
Groundwater Elevation Summary Monitoring and
Recovery Wells (Stratigraphic Layer 5)
(June, 2007) .................................................................................. 35
Laboratory Analytical Report Summary
Argus Analytical, Inc. (June, 2007)................................................ 37
Laboratory Analytical Report Summary
(Stratigraphic Layer 1) (June, 2007).............................................. 44
Laboratory Analytical Report Summary
(Stratigraphic Layer 2) (June, 2007).............................................. 46
Laboratory Analytical Report Summary
(Stratigraphic Layer 3) (June, 2007).............................................. 49
Laboratory Analytical Report Summary
(Stratigraphic Layer 4) (June, 2007).............................................. 52
Laboratory Analytical Report Summary
(Stratigraphic Layer 5) (June, 2007).............................................. 55
Historical (Original to Current) TCE Groundwater
Analytical Summary - All Wells ..................................................... 57
Historical (Original to Current) TCE Groundwater
Analytical Summary (Stratigraphic Layer 1) .................................. 65
Historical (Original to Current) TCE Groundwater
Analytical Summary (Stratigraphic Layer 2) .................................. 67
Historical (Original to Current) TCE Groundwater
Analytical Summary (Stratigraphic Layer 3) .................................. 70
Historical (Original to Current) TCE Groundwater
Analytical Summary (Stratigraphic Layer 4) .................................. 73
Historical (Original to Current) TCE Groundwater
Analytical Summary (Stratigraphic Layer 5) .................................. 76
Composite Historical TCE Groundwater Analytical Summary
Monitoring and Recovery Wells - All ............................................. 78
Composite Historical TCE Groundwater Analytical Summary
Monitoring and Recovery Wells (Stratigraphic Layer 1) ................ 86
Composite Historical TCE Groundwater Analytical Summary
Monitoring and Recovery Wells (Stratigraphic Layer 2) ................ 89
Composite Historical TCE Groundwater Analytical Summary
Monitoring and Recovery Wells (Stratigraphic Layer 3) ................ 92
Composite Historical TCE Groundwater Analytical Summary
Monitoring and Recovery Wells (Stratigraphic Layer 4) ................ 96
Composite Historical TCE Groundwater Analytical Summary
Monitoring and Recovery Wells (Stratigraphic Layer 5) .............. 100
GRS Operational Summary
(March, 2000 through June, 2007) .............................................. 102
ii
TABLE OF CONTENTS
(Continued)
Page
GRAPH:
Graph 1:
Cumulative Volatile Organic Compounds (VOCs) Removed
(March, 2000 to June, 2007) ....................................................... 111
FIGURES:
Figure 1:
Figure 2-1:
Figure 2-2:
Figure 2-3:
Figure 2-4:
Figure 2-5:
Figure 3-1:
Figure 3-2:
Figure 3-3:
Figure 3-4:
Figure 3-5:
Figure 4:
Site Layout .................................................................................. 113
Groundwater Elevation Contour Map (Stratigraphic Layer 1) ...... 115
Groundwater Elevation Contour Map (Stratigraphic Layer 2) ...... 117
Groundwater Elevation Contour Map (Stratigraphic Layer 3) ...... 119
Groundwater Elevation Contour Map (Stratigraphic Layer 4) ...... 121
Groundwater Elevation Contour Map (Stratigraphic Layer 5) ...... 123
TCE Concentration Map (Stratigraphic Layer 1) ......................... 125
TCE Concentration Map (Stratigraphic Layer 2) ......................... 127
TCE Concentration Map (Stratigraphic Layer 3) ......................... 129
TCE Concentration Map (Stratigraphic Layer 4) ......................... 131
TCE Concentration Map (Stratigraphic Layer 5) ......................... 133
System Recovery Well(s) Vacuum Readings
(Stratigraphic Layers 1 and 2, June, 2007) ................................. 135
APPENDICES:
Appendix A:
GRS Monthly Laboratory Analytical Reports (Effluent and Influent)
(January through June, 2007)
Appendix B:
Argus Analytical, Inc. Laboratory Reports,
Semi-Annual Groundwater Sampling Event (June, 2007)
iii
HAZCLEAN REPORT NO. 07.0306.52
1.0
INTRODUCTION
1.1
Background
PAGE 1
As part of a Comprehensive Groundwater Investigation (pursuant to Mississippi
Department of Environmental Quality [MDEQ] Agreed Order 2875-94, dated July 19, 1994),
presently ongoing at the Luvata Grenada LLC (OEM Plant) facility, Grenada, Mississippi,
HAZCLEAN ENVIRONMENTAL CONSULTANTS, INC. (HAZCLEAN), has prepared a
Groundwater Remediation System (GRS) monitoring and operations program semi-annual
engineering report for the facility for the second semi-annual period of the seventh year of
operation (January 1, 2007 – June 30, 2007). This semi-annual report was compiled from
HAZCLEAN’s field and operations/maintenance data and from laboratory analytical data
reported to HAZCLEAN by Argus Analytical, Inc., Ridgeland, Mississippi.
Initial assessment activities at the OEM facility were conducted from 1989 – 1992.
Assessment activities were requested by the Mississippi Department of Environmental
Quality (MDEQ) pursuant to the discovery of elevated levels of Trichloroethene (TCE) in the
groundwater monitoring wells (GWMWs) located on the east adjoining property (Koppers
Industries, Inc.).
Luvata contracted HAZCLEAN to prepare a Work Plan (Report No. 93.1.306.20.256;
December 7, 1993) for a preliminary groundwater investigation and to develop a report on
historical waste management practices (Report No. 93.1.306.20.286; December 14, 1993)
as part of the Work Plan.
Initial assessment activities were completed in 1995 and in November, 1997, a
“Groundwater Remediation System and Monitoring Program Design for the Comprehensive
Groundwater Investigation Program (Revised)”; Report No. 96.1.306.27.447, was submitted
to the MDEQ.
From November, 1999 through February, 2000, installation of monitoring wells, recovery
wells, and the groundwater remediation system were completed. The GRS was initially
started in March, 2000. Except for periods of adjustments and maintenance to improve the
recovery efficiency, the system has operated continuously.
The following report incorporates a summary of the GRS monthly Operations and
Maintenance (O&M), semi-annual groundwater sampling event and reporting activities for
the second semi-annual period of the seventh year of operation (January 1, 2007 –
June 30, 2007).
OCTOBER, 2007
HAZCLEAN REPORT NO. 07.0306.52
PAGE 2
The site has been characterized as consisting of five (5) identified water-bearing layers and
referred to as Stratigraphic Layers: 1, 2, 3, 4 and 5. Notably, after careful review of
historical data, Stratigraphic Layer 3/4, which had only one (1) well (MW-52-30) placed
within this layer, will no longer be recognized as a distinct layer. This well has been placed
in Stratigraphic Layer 3.
1.2
Remedial System Review and Modification
Lennox International, Heatcraft’s former parent company, initiated a voluntary project
review in November 2003 to evaluate all phases of the overall program including site
characterization, system efficacy, system operational components, and system efficiency.
Available site characterization and remediation system documentation was reviewed and
evaluated to determine the extent to which the objectives stated in the Order/Voluntary
Agreement between MDEQ and Heatcraft OEM had been and were being met.
In an effort to more quantitatively evaluate the current GRS groundwater capture zone and,
thus, system effectiveness a numerical groundwater modeling assessment was conducted.
After successful quantitative statistical calibration of the steady-state groundwater flow
model, the finite element grid was modified to accommodate the addition of pumping nodes
so that, in addition to evaluating current system effectiveness, a variety of alternative
scenarios could be evaluated. Results of the simulations demonstrated that complete
capture has not been achieved. However, aggregate site data do show that natural
processes, including dispersion, diffusion, sorption, and intrinsic biological processes, have
attenuated downgradient plume migration.
The results of that review recommended retaining the current system’s concept and
objectives, but re-designing the mechanical aspects of the system. MDEQ concurred with
this recommendation and the groundwater extraction-and-treatment system is being
reconfigured to provide better capture of the more highly contaminated portions of the
plume and by separating the SVE system to help ensure capture of the vapor plume and
more efficient removal of contaminant mass from the vadose zone. The modified
groundwater remediation system has been designed to contain the source zone and to
prevent further migration of the plume (greater than or equal to 1 mg/L) off site. Based on
hydrogeologic modeling, high concentration plume capture will be achieved with 30 wells,
and eight of these wells will be existing GRS recovery or monitoring wells the others are
newly drilled wells. These well locations were selected through groundwater modeling
performed on data from a series of slug tests performed on existing deep and shallow
wells. These locations are designed to provide capture of the dissolved-phase plume and
protect against off-site migration.
OCTOBER, 2007
HAZCLEAN REPORT NO. 07.0306.52
PAGE 3
The SVE system will utilize a dedicated blower rather than the existing liquid ring pump; this
is expected to result in improved efficiency and the ability to better control and monitor the
system. The SVE system will also use dedicated extraction wells to accommodate
collection of accurate vapor-flow measurements, accurate measurement of contaminant
concentrations in the vadose, and accurate vacuum measurements. With this information,
resources can be reassigned and the vadose source can be more aggressively attacked
and more quickly treated.
Installation of the new groundwater extraction-and-treatment and SVE system is currently
underway and is to be completed in the fall of 2007.
OCTOBER, 2007
HAZCLEAN REPORT NO. 07.0306.52
2.0
PAGE 4
GROUNDWATER REMEDIATION SYSTEM (GRS) DESIGN SUMMARY
The GRS was installed and started operations in March, 2000. The system is a Dual
Phase Vapor Extraction (DPVE) type and was manufactured by Ejector Systems, Inc.,
Addison, Illinois. The GRS incorporates a 50 horsepower Travaini Liquid Ring Vacuum
Pump (LRVP) to produce a vacuum to recover Volatile Organic Compounds (VOCs),
specifically, Trichloroethene (TCE) impacted groundwater from a system of 27 recovery
wells. Extracted groundwater and soil vapors are drawn into the GRS’s primary air-water
separator (knock-out tank) which separates vapors from recovered groundwater. The
vapors are drawn though the LRVP and a secondary air/moisture separator prior to
discharge to the atmosphere. The groundwater is pumped from the primary knockout tank,
utilizing a pump which has been designed to operate under vacuum conditions, for
treatment through a series of three (3) separate air stripper units.
The GRS utilizes a central four-inch (4") Schedule 40 PVC piping network to apply a
vacuum to the vadose and saturated zones surrounding the recovery wells. Soil vapors
and groundwater are delivered to the GRS via a single four-inch (4") piping network. In
order to produce groundwater from deeper wells (greater than 30 feet in depth), a
dedicated one-inch (1") PVC air line delivers compressed air to each applicable well. By
utilizing vacuum assisted air-lift, downhole mechanical pumps are eliminated, thereby,
reducing maintenance and/or replacement costs. Influent piping, effluent piping and GRS
components are routed as illustrated on Figure 1, Site Layout.
The GRS major system components include the following:
a.
A series of three (3) separate air strippers consisting of one (1) 2-tray air
stripper system and two (2) separate 4-tray air stripper systems rated for up
to 50 gallons per minute (gpm) liquid influent. Each tray contains
approximately twelve (12) aeration tubes for water treatment. Each stripper
discharges the residual Volatile Organic Compound (VOC) vapors through
separate exhaust stacks.
b.
One (1) – fifty (50) horsepower Liquid Ring Vacuum Pump (LRVP). The
GRS has been designed in order to combine maximum groundwater
recovery and maximize vapor recovery at the facility. By combining both, the
overall time required for remediation of the facility is minimized.
c.
Hour run-time meter (wired to the LRVP).
d.
Remote telemetry system with restart and monitoring capabilities.
OCTOBER, 2007
HAZCLEAN REPORT NO. 07.0306.52
PAGE 5
e.
Phase reversal monitor and relay to protect electrical hardware from
spontaneous phase reversals, utility maintenance errors, etc.
f.
Voltage overload protection relays to protect electrical hardware from voltage
spikes due to lightning strikes, etc.
g.
Air/water and air/air heat exchanger.
h.
Ten (10) horsepower rotary screw air compressor with 110 psi capacity for
continuous duty operation with filtration system and gauges to provide air lift
in the deeper recovery wells (RW-2-60, RW-2-118, RW-4-60, RW-5-60,
RW-13-60, RW-14-60, RW-15-60, RW-19-60, and RW-20-60).
i.
8.5' W x 28.5' L x 9.5' H aluminum hull building with removable walls.
The GRS unit and components are enclosed in a cyclone fenced compound to protect the
unit and components from vandalism, damage from traffic and to protect the general public
in accordance with MDEQ regulations.
OCTOBER, 2007
HAZCLEAN REPORT NO. 07.0306.52
3.0
OPERATIONS, MAINTENANCE AND MONITORING ACTIVITIES
3.1
Operations and Maintenance
PAGE 6
HAZCLEAN visits the facility a minimum of two (2) times per month for scheduled O&M
activities, to collect system influent and effluent water samples under the National Pollutant
Discharge Elimination System (NPDES) permit and to record the groundwater remediation
system (GRS) data. System data to be recorded consists of the following:
▪
▪
▪
▪
▪
▪
Runtime hours;
Stripper blower values;
Totalizing flowmeter gallons;
AWS-1 vacuum;
AWS transfer and other pump readings;
Liquid ring exhaust and liquid ring pump temperatures.
O&M activities for the semi-annual period include maintenance on the flow meter totalizer,
installation of various system gauges, scheduled lubrication of all motors, cleaning of the
AWS-1 and AWS-2 tanks and conductance probes, repairs to Blowers 1 and 2,
replacement of drop tubes in recovery wells, repair leaking make-up water pump, cleaning
of air strippers and other routine GRS maintenance activities. HAZCLEAN conducts
unscheduled visits as needed.
3.2
GRS Performance Summary
During this performance period (January 1, 2007 – June 30, 2007), the GRS processed a
combined total volume of 1,126,731 gallons of groundwater and make-up waters. The ratio
of make-up water to groundwater has never been determined, but a ratio of 1:4 is
reasonable, based on previous meter readings. The GRS operated a total of 3,716 of
4,344 hours for an operating efficiency of 85.5 percent (%).
Since the GRS start-up in March, 2000, the GRS has extracted approximately
42,526,840 gallons of groundwater and make-up water (Note: groundwater plus make-up
waters will be referred to as groundwater throughout this report). The GRS has operated a
total of 54,340 hours of 64,032 calendar hours for an operating efficiency of 84.9 percent
(%).
OCTOBER, 2007
HAZCLEAN REPORT NO. 07.0306.52
3.3
PAGE 7
NPDES Influent and Effluent Sampling Summary
Since system start-up and monthly thereafter, National Pollutant Discharge Elimination
System (NPDES) groundwater permit sampling has been conducted. The NPDES Permit
No. MS0001368 was issued in 1998, re-issued September 16, 2003, and expires
August 31, 2008. The permit requires bimonthly monitoring of:
a.
b.
c.
d.
e.
f.
g.
Flow Rate
Biochemical Oxygen Demand (5-Day)
Total Suspended Solids
Trichloroethene (TCE)
Vinyl Chloride
Oil and Grease
pH
As required by the NPDES Permit, on a monthly basis, all influent and effluent samples are
analyzed for certain Volatile Organic Aromatics (VOAs), - specifically targeting: Benzene;
Carbon Disulfide; 1,1-Dichloroethene (1,1-DCE); CIS-1,2-Dichloroethene (CIS-1,2-DCE);
Trans-1,2-Dichloroethene
(Trans-1,2-DCE);
Ethylbenzene,
Styrene;
Toluene;
Trichloroethene (TCE), Vinyl Chloride and Xylenes (Total). Additionally, once per month,
the effluent system discharge water is analyzed for Oil and Grease and Total Suspended
Solids (TSS). The effluent water pH is field measured and provided to the laboratory (see
Appendix A, GRS Monthly Laboratory Analytical Reports [Effluent and Influent]). In
September, 2003, the NPDES Permit was modified and BOD 5 was removed from the
analysis criteria.
During the course of the GRS start-up evaluation (March 8 through July 1, 2000), the GRS
was subjected to several operating scenarios to determine the optimal removal and
treatment of VOC impacted soils and groundwater. Discharged TCE ranged from below
method detection limits (BMDL) to a maximum of 0.082 milligrams per liter (mg/l). Upon
receipt and review of analytical results yielding TCE effluent concentrations above the
method detection limit, the GRS was adjusted to reduce TCE effluent concentrations.
During portions of April, 2000 and May, 2000, the GRS discharged TCE in concentrations
above method detection limits (0.006 mg/l - 0.082 mg/l); however, the levels were within the
discharge limitations (no stated permit levels) in the MDEQ, NPDES Permit Number
MS0001368.
Since May, 2000, all monitored effluent chemicals of concern concentrations have been in
compliance with the NPDES Permit.
OCTOBER, 2007
HAZCLEAN REPORT NO. 07.0306.52
PAGE 8
4.0
GROUNDWATER SAMPLING SUMMARY
4.1
Monitoring Well Sampling Activities Summary
Sampling of groundwater monitoring/recovery wells for the second semi-annual period
(January 1, 2007 – June 30, 2007) of the seventh year of operations was performed in
June, 2007, in accordance with Quality Assurance Protocols detailed in the United States
Environmental Protection Agency (USEPA), Region IV, Environmental Investigations
Standard Operating Procedure and Quality Assurance Manual (EISOPQAM) (November,
2001).
Polyethylene-Based Equilibrator Passive Diffusion Bag (PDB) disposable samplers and
disposable bailers were used to obtain groundwater samples which were submitted for
laboratory analysis for Volatile Organic Compound (VOC) concentrations. PDB samplers
are suitable for obtaining concentrations of VOCs in groundwater and are a suggested
method for long-term monitoring of VOCs in groundwater monitoring wells at wellcharacterized sites. The effectiveness of the use of a single PDB sampler in a monitoring
well is dependent upon horizontal flow through the well screen and that the quality of the
water is representative of the groundwater in the aquifer directly adjacent to the well
screen.
A typical PDB sampler consists of a low-density polyethylene lay-flat tube closed at both
ends which is filled with deionized water prior to installation within the monitored well. The
sampler is positioned within the well bore, approximately 8” – 12” from the well bottom. The
amount of time that the PDB sampler is left in the monitoring well prior to recovery depends
on the time required by the PDB sampler to equilibrate with localized groundwater and the
time required for the environmental disturbance caused by sampler deployment to return to
ambient conditions. The rate that the deionized water within the PDB sampler equilibrates
with localized groundwater depends on multiple factors, including the type of compounds
being sampled and the water temperature. The samplers are left in place long enough for
the localized groundwater, contaminant distribution, and flow dynamics to restabilize
following PDB sampler deployment. Laboratory, field data and pilot studies support that a
minimum of two to three (2-3) weeks is adequate time for equilibration for VOCs. From
May 30 – 31, 2007, the PDB samplers were installed in monitoring wells located at the
following stations:
MW-1-29
MW-5-40
MW-7-57
MW-10-20
MW-12-31
MW-15-40
OCTOBER, 2007
MW-2-60
MW-5-60
MW-8-19
MW-10-34
MW-12-47
MW-15-60
MW-2-118
MW-6-24
MW-8-119.5
MW-10-45
MW-13-36
MW-16-43
MW-3-29
MW-6-59.5
MW-9-19
MW-11-17
MW-13-58
MW-16-57
MW-4-43
MW-7-19
MW-9-34
MW-11-35
MW-14-36
MW-17-30
MW-4-60
MW-7-42
MW-9-48
MW-12-20
MW-14-57
MW-17-48
HAZCLEAN REPORT NO. 07.0306.52
MW-18-20
MW-20-50
MW-26-25
MW-28-118
MW-31-30
MW-34-30
MW-37-30
MW-40-30
MW-44-50
MW-48-20
PZ-3-19
MW-55-60
MW-58-60
MW-18-40
MW-21-30
MW-26-40
MW-29-25
MW-31-39
MW-34-50
MW-37-60
MW-40-57
MW-45-30
MW-49-20
MW-53-30
MW-56-30
MW-59-30
MW-18-60
MW-22-30
MW-26-57
MW-29-40
MW-32-30
MW-35-30
MW-38-30
MW-41-30
MW-45-50
MW-50-20
MW-53-60
MW-56-60
MW-59-60
PAGE 9
MW-19-40
MW-23-30
MW-27-25
MW-29-64
MW-32-40
MW-35-50
MW-38-60
MW-42-30
MW-46-30
MW-51-30
MW-54-30
MW-57-30
MW-19-60
MW-24-30
MW-27-40
MW-30-30
MW-33-30
MW-36-30
MW-39-30
MW-43-30
MW-46-50
MW-52-30
MW-54-60
MW-57-60
MW-20-28.5
MW-25-30
MW-27-57
MW-30-50
MW-33-40
MW-36-50
MW-39-60
MW-44-30
MW-47-50
PZ-1-29A
MW-55-30
MW-58-30
Following the initial equilibration period, the PDB samplers maintain equilibrium
concentrations with the localized groundwater until recovery. Recovery of the PDB
samplers consists of retrieving the PDB samplers from the well and immediately
transferring the enclosed water into two (2) laboratory supplied 40-milliliter (ml) sampling
vials with Hydrochloric Acid (HCL) preservative and placing in a cooler with ice to chill the
samples to four degrees Centigrade (4oC) awaiting transport to Argus Analytical, Inc.,
Ridgeland, Mississippi, an approved National Environmental Laboratory Accreditation
Program (NELAP) laboratory for analysis. All retrieved groundwater samples were
analyzed according to EPA Method 8260B for Volatile Organic Compounds.
Since PDBs are too large and drop-tubes prevent the placement of PDBs within the casing
of recovery wells, disposable bailers were utilized to obtain samples from the recovery wells
and Piezometer Well PZ-2-19. Groundwater samples were collected from May 30 - 31,
2007, from the following locations:
MW-1-29
MW-5-40
MW-7-57
MW-10-20
MW-12-31
MW-15-40
MW-18-20
MW-20-50
MW-26-25
MW-29-40
MW-32-30
MW-35-30
MW-38-30
MW-41-30
MW-45-50
MW-50-20
RW-18-38
OCTOBER, 2007
MW-2-60
MW-5-60
MW-8-19
MW-10-34
MW-12-47
MW-15-60
MW-18-40
MW-21-30
MW-26-40
MW-29-64
MW-32-40
MW-35-50
MW-38-60
MW-42-30
MW-46-30
MW-51-30
RW-20-59
MW-2-118
MW-6-24
MW-8-119.5
MW-10-45
MW-13-36
MW-16-43
MW-18-60
MW-22-30
MW-26-57
MW-30-30
MW-33-30
MW-36-30
MW-39-30
MW-43-30
MW-46-50
MW-52-30
RW/MW-02-29
MW-3-29
MW-6-59.5
MW-9-19
MW-11-17
MW-13-58
MW-16-57
MW-19-40
MW-23-30
MW-27-40
MW-30-50
MW-33-40
MW-36-50
MW-39-60
MW-44-30
MW-47-50
PZ-01-29A
RW/MW-05-24
MW-4-43
MW-7-19
MW-9-34
MW-11-35
MW-14-36
MW-17-30
MW-19-60
MW-24-30
MW-28-118
MW-31-30
MW-34-30
MW-37-30
MW-40-30
MW-44-50
MW-48-20
PZ-2-19
RW/MW-13-20
MW-4-60
MW-7-42
MW-9-48
MW-12-20
MW-14-57
MW-17-48
MW-20-28.5
MW-25-30
MW-29-25
MW-31-39
MW-34-50
MW-37-60
MW-40-57
MW-45-30
MW-49-20
PZ-3-19
RW/MW-14-20
HAZCLEAN REPORT NO. 07.0306.52
RW/MW-15-20
MW-53-60
MW-56-60
MW-59-60
RW/MW-16-28
MW-54-30
MW-57-30
RW/MW-19-20
MW-54-60
MW-57-60
PAGE 10
RW/MW-4-29
MW-55-30
MW-58-30
RW-18-59
MW-55-60
MW-58-60
MW-53-30
MW-56-30
MW-59-30
For Quality Assurance/Quality Control (QA/QC) purposes, 12 duplicate groundwater
samples and one (1) trip blank were collected and submitted for the same analysis as the
groundwater samples. The 12 duplicates are identified by the alphabet letters A-L with the
actual well in parenthesis: Duplicate A (MW-53-30), B (MW-9-19), C (MW-50-20),
D (MW-32-40), E (MW-46-50), F (MW-44-30), G (MW-58-60), H (MW-29-25), I (MW-2-118),
J (MW-26-40), K (MW-28-118), and L (MW-20-50).
All samples were analyzed for the following site specific target Volatile Organic Compounds
(VOCs): Trichloroethene (TCE), Vinyl Chloride, Cis-1,2 Dichloroethene, Trans-1,2Dichloroethene, 1,1-Dichloroethene, Benzene, Toluene, Ethylbenzene, Xylenes (Total),
Carbon Disulfide and Styrene.
Groundwater levels were measured using a Solinst®, Inc., Model 122 Light Non-Aqueous
Phase Liquids (LNAPL)/Dense Non-Aqueous Phase Liquids (DNAPL)/water interface
probe. Neither LNAPLs nor DNAPLs were encountered in any measured groundwater or
recovery well. Following each measurement, the interface probe was thoroughly cleaned
using the following procedure; first with a Liqui-nox® detergent solution, then rinsed with
deionized water, then rinsed with pesticide grade isopropanol, and a final rinse with distilled
water. Elevations are determined to an accuracy of 0.01 feet from the top of each
monitoring well casing elevation. All groundwater measurements are made from the north
side of the top of riser pipe casing to ensure consistency in a reference point. The direction
of groundwater flow varies for each identified stratigraphic layer.
Layer 1:
For this monitoring period, the groundwater flow had a predominate westerly
direction from PZ-3-19 toward RW/MW-14-20 and continuing a westward
direction toward MW-18-20, except in the southeast portion. In the southeast
area, the direction changes to a southeasterly flow. The overall flow pattern
somewhat mimics the surface topography. Also, during this period, in the
months of March and April, RW/MW-13-20 and RW/MW-19-20 were
disconnected from the recovery system and RW/MW-15-20 was unable to be
located (possibly destroyed). Depths to groundwater ranged from 8.94 feet to
19.84 feet below top of casing (TOC) for this period.
Layer 2:
Groundwater flow is mainly to the north and east. RW/MW-04-29 did not
encounter groundwater this sampling period. RW/MW-02-29 has been
disconnected from the treatment system and MW-27-25 was unable to be
located. Depths to groundwater range from 14.41 feet below top of casing
(TOC) to 25.69 feet below TOC.
OCTOBER, 2007
HAZCLEAN REPORT NO. 07.0306.52
PAGE 11
Layer 3:
Groundwater flow direction underlying the site is mainly towards the north
and east, which has been the general direction for most of the reporting
periods. Depths to groundwater have remained about the same as
compared to the December, 2006 depths. Depths to groundwater ranges
from 9.77 feet to 26.34 feet below top of casing (TOC).
Layer 4:
Groundwater flow for Stratigraphic Layer 4 has a west to east flow pattern in
the direction of Jack Creek, which is located to the southeast and
circumvents the site from the southeast to a northerly route and enters
Batupan Bogue River. Current (June, 2007) depths compared to December,
2006 depths did not indicate much change; therefore, little
recharge/discharge is occurring. RW-18-59 has a depth to groundwater of
7.79 feet below top of casing (TOC). This well compares favorably to
Piezometer Well PZ-2-19, which has a depth to groundwater of 8.94 feet
below top of casing (TOC). This well’s depth to groundwater implies that it is
located within a confined bed, separate and distinct from other wells
identified to be in Stratigraphic Layer 4. As a result, it was not utilized in
constructing the groundwater flow maps. Depths to groundwater range from
12.98 feet to 28.11 feet below top of casing (TOC).
Layer 5:
A determination of the groundwater flow is based on only three (3) control
points. This layer is similar to Layer 4 in that recharge/discharge does not
vary much. Groundwater flow direction is from south to north across the site
toward the Batupan Bogue River. Depths to groundwater range from
20.71 feet to 26.21 feet below top of casing (TOC).
The groundwater elevations for this sampling event were only slightly different than the
December, 2006 sampling event. Table 1, Groundwater Elevation Summary Monitoring
and Recovery Wells, presents the groundwater elevations measured from June 27 - 29,
2007, for all wells and by stratigraphic layers. Tables 1-1 through 1-5 present the
groundwater elevations for the wells within the respective Stratigraphic Layers 1, 2, 3, 4,
and 5.
Disposable nitrile gloves were worn during the purging and sampling activities of all wells.
Gloves were changed between groundwater purging activities and between sample
acquisition of each sampled well. Groundwater samples collected for VOC analysis were
placed into two (2) laboratory supplied 40 ml, amber glass sample vials with Teflon® caps.
All samples were preserved with Hydrochloric Acid (HCL). After sample collection, the
samples were double-bagged in Ziploc™ freezer bags to prevent cross-contamination and
then placed in a cooler with ice to be cooled to 4° C. All samples were submitted within the
allowed holding time to Argus Analytical, Inc., Ridgeland, Mississippi, for laboratory
analysis.
OCTOBER, 2007
HAZCLEAN REPORT NO. 07.0306.52
PAGE 12
Table 2, Laboratory Analytical Report Summary, Argus Analytical, Inc., presents the
analytical results for all sampled wells. Tables 2-1 through 2-5, Laboratory Analytical Report
Summary, detail the analytical results of all sampled wells as applicable for each
stratigraphic layer for the June, 2007 sampling event. For the complete analytical report,
see Appendix B, Argus Analytical, Inc. Laboratory Reports, Semi-Annual Groundwater
Sampling Event. Table 3, Historical (Original to Current) TCE Groundwater Analytical
Summary – All Wells, presents and compares the original to the most current TCE
concentrations. Tables 3-1 through 3-5 compare the original (1994/1995 data) to the June,
2007 TCE groundwater analytical results for each stratigraphic layer.
4.2
Groundwater Levels and Vacuum Readings
For each semi-annual event, groundwater level measurements are only taken in system
effectiveness and boundary control wells. Groundwater levels are used to monitor the
movement and direction of groundwater flow for all Stratigraphic Layers (1 – 5). A review of
site data indicates that only a limited area of the facility is subject to the influence of the
GRS unit. The areas showing influence are the areas of major concern, specifically in the
areas of monitoring wells 13, 14, 15 and 16. Vacuum readings are taken on all recovery
wells to determine their working efficiency. Vacuum readings are measured at the wellhead
while the system is operating at vacuum with a permanently mounted vacuum gauge at the
wellhead. The normal vacuum operating range by the liquid ring vacuum pump (LRVP) is
between 15 – 17 inches of Mercury.
OCTOBER, 2007
HAZCLEAN REPORT NO. 07.0306.52
5.0
PAGE 13
SITE RESPONSE TO TREATMENT
Monitoring activities, including the measurement of VOC exhaust concentrations, exhaust
temperatures, pressure gauge and control panel readings, groundwater influent and
effluent concentrations, groundwater treated volumes, system repairs, and other criteria
required to maintain the GRS have been conducted. As discrepancies and malfunctioning
items and/or equipment are identified, repairs are made and adjustments to the system are
made. Major repairs, such as upgrading the system, were not conducted since a new
treatment system and recovery well arrangement is being implemented.
On a monthly basis, exhaust (air) VOC emission concentrations are measured with a
Photovac MicroFID, handheld Flame Ionization Detector (FID) Meter capable of detecting
VOCs in a range from 0.5 to 50,000 parts per million (ppm). Prior to collecting each vapor
reading, the HVM is calibrated in accordance to manufacturer’s instructions. By correlating
analytical data with measured VOC concentrations, monitoring exhaust gas velocities and
concentrations, the vapor mass of VOCs as TCE being removed is calculated. The GRS is
recovering vadose zone soil vapors from the facility’s recovery well system at a rate of
approximately 277 cubic feet per minute for this semi-annual period.
5.1
Total TCE Mass Removed (Vapor and Groundwater)
For the second semi-annual period of the seventh year of operation (January 1, 2007 –
June 30, 2007), the GRS has extracted a combined total of 1,644.89 pounds (0.82 tons) of
TCE in vapor form and from groundwater.
5.2
TCE Mass Removed from Groundwater
For the semi-annual period (January 1, 2007 – June 30, 2007), the GRS treated
1,126,731 gallons of groundwater in 3,716 operational hours for an average of 5.05 gallons
per minute (gpm). The decrease (343,560 gallons) in groundwater processed this period
versus last period (1,126,731 gallons vs. 1,470,291 gallons) relates to the decrease in
VOCs removed (5.05 pounds vs. 5.16 pounds). For the period, the GRS has removed
3.74 pounds of VOCs from the groundwater.
OCTOBER, 2007
HAZCLEAN REPORT NO. 07.0306.52
5.3
PAGE 14
TCE Mass Removed as Vapor
For the semi-annual period (January 1, 2007 – June 30, 2007), the GRS removed
1,641.15 pounds (0.82 tons) as vapor this period resulting in a decrease (279.31 pounds)
over the previous period (1,641.15 pounds vs. 1,920.46 pounds and 0.82 tons vs.
0.96 tons). The system’s actual exhaust volumetric flow rate (Q)1 was calculated at an
average 277 cubic feet per minute (cfm) based on six (6) measurements during the semiannual period.
1
The actual volumetric flow rate (Q) for the system was determined
utilizing the following equation:
Q=VA
Where Velocity (V):
V=1096(VP/) ½
and
VP= velocity pressure in the exhaust stack (inches of Water)
= density of the stack gas (pounds per cubic foot)
A= the cross sectional area of the stack (square feet).
The exhaust velocity pressure (VP) was measured utilizing a Dwyer
Pitot Tube and a digital manometer traversed perpendicular across
the diameter of the exhaust stack as given in Dwyer Instruments
Inc., Bulletin No. H-11. The stack gas density was determined by
measuring the stack gas dry bulb, wet bulb temperatures and
relative humidity and using a psychometric air properties calculator
to find the specific volume, which is the reciprocal of the density.
5.4
GRS Treatment Summary
For the second semi-annual period of the seventh year of operation (January 1, 2007 June 30, 2007), the GRS has operated in compliance with NPDES Permit No. MS0001368.
Since the start-up of the system in March, 2000, the GRS has removed a total of
51,348 pounds (25.67 tons) of VOC/TCE in vapor form and a total of 1,346 pounds
(0.67 tons) of VOC/TCE from groundwater. A total of 52,695 pounds (26.35 tons) of VOCs
have been removed from the subsurface by the GRS in 54,340 operating hours. Table 5,
GRS Operational Summary, details GRS applied vacuum, runtime, total effluent discharge,
groundwater influent and effluent concentrations, GRS vapor effluent concentrations, and
GRS vapor velocities. Monthly influent and effluent laboratory analytical reports are
attached in Appendix A.
OCTOBER, 2007
HAZCLEAN REPORT NO. 07.0306.52
6.0
REMEDIAL PROGRESS EVALUATION
6.1
Operations Summary
PAGE 15
Dense Non-Aqueous Phase Liquids (DNAPLs) were not detected or measured by the
interface probe in any monitoring well at the facility. DNAPLs have not accumulated within
any component of the GRS. The GRS has proved to be an effective means of remediation
for the site. From a review of the historical analytical data, a number of groundwater
monitoring wells in each stratigraphic unit show a decrease in TCE concentration over time.
TCE concentrations at the start of operations March, 2000 to the June, 2007 analytical
results for each stratigraphic layer are summarized as follows (see Tables 3-1 through 3-5):
Layer 1:
This layer continues to show substantial lowering of contamination from
original high levels in many wells. Although down from their original 19941995 values, monitoring wells MW-7-19, MW-9-19, MW-18-20, MW-49-20,
and MW-50-20 had increases. The largest increase occurred in MW-50-20
(188 mg/l vs. 136 mg/l). As stated in previous reports, this monitoring well is
most likely being contaminated from spillage of untreated and/or partially
treated waters from the old treatment system. Additionally, recovery well
RW/MW-14-20 increased from 22.6 mg/l to 28.5 mg/l. Three (3) recovery
wells (RW/MW-13-20, RW/MW-15-20, and RW/MW-19-20) were
disconnected and/or destroyed during this semi-annual monitoring period;
therefore, no sampling was conducted for these wells. For the remaining
wells in this layer, contamination levels ranged from <0.002 to 1.24 mg/l.
Layer 2:
This layer continues to show decreases in contamination in the majority of
wells. Increases were noted for monitoring wells MW-1-29, MW-3-29,
MW-16-43, MW-17-48, MW-23-30, MW-37,30, PZ-1-29A and recovery well
RW/MW-16-28. The highest concentrations are found in MW-18-40
(14.1 mg/l); RW/MW-05-24 (17.2 mg/l) and RW/MW-16-28 (6.47 mg/l). While
these wells are the highest in concentration, they have been reduced from
levels ranging upwards to 238 mg/l. The remaining wells in Layer 2 range
from <0.002 mg/l to 17.2 mg/l. MW-27-25 was unable to be located (UTL).
RW/MW-2-29 was disconnected in April and RW/MW-4-29 did not encounter
groundwater (GWNE).
OCTOBER, 2007
HAZCLEAN REPORT NO. 07.0306.52
PAGE 16
Layer 3:
For this semi-annual sampling event, Layer 3 had little change from the
previous (December 2006) sampling event. The higher concentration wells
(MW-02-60, MW-05-40, MW-07-42, MW-09-34, MW-13-36, MW-14-36,
MW-15-40 and MW-20-50), which are within the suspect source areas,
remained mostly stable in concentration levels (see Table 3-3, Historical
[Original to Current] TCE Groundwater Analytical Summary [Stratigraphic
Layer 3] for results).
Layer 4:
Layer 4 has 31 wells being monitored. The highest concentration is still in
MW-14-57 but is down from its highest concentration of 317 mg/l to 219 mg/l.
Based on the June, 2007 analytical results, this layer appears to be
stabilizing in its vertical and horizontal migration for the most part, with the
exception of MW-4-60 and MW-14-57. MW-4-60 increased from 14.5 mg/l to
43.6 mg/l and MW-14-57 increased from 119 mg/l to 219 mg/l.
Layer 5:
This layer, which has only three (3) monitoring wells, has remained stable
with concentration levels ranging from <0.002 mg/l to 0.045 mg/l. The effects
of a downward migration into this layer are not apparent.
Continued groundwater sampling data aids in determining the horizontal and vertical
movement of the TCE plume(s) at the facility.
6.2
Findings
1.
The GRS has been an effective mechanism for the extraction of VOCs from the
groundwater and vadose zone. To date, approximately 54,340 pounds (26.35 tons)
of VOCs have been extracted and treated due to vapor extraction and/or
groundwater treatment.
2.
DNAPLs and LNAPLs were not detected in any measured groundwater monitoring
well or groundwater recovery well during the June, 2007 sampling event.
3.
During the past semi-annual period, the groundwater influent flow rate, based on
gallons processed, ranged from 2.0 gallons per minute (gpm) to 9.3 gpm. The
average groundwater GRS influent flow rate is approximately 4.7 gpm into the
AWS-1 knockout tank.
4.
A number of groundwater monitoring wells in each stratigraphic unit show a
decrease in TCE concentration over time.
5.
The use of Equilibrator Passive Diffusion Bag (PDB) Samplers is cost effective and
maintains the necessary data quality objectives for sampling TCE concentrations.
OCTOBER, 2007
HAZCLEAN REPORT NO. 07.0306.52
PAGE 17
TABLE 1
GROUNDWATER ELEVATION SUMMARY
MONITORING AND RECOVERY WELLS
JUNE, 2007
OCTOBER, 2007
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PAGE 1
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PAGE 2
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PAGE 3
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PAGE 4
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PAGE 5
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PAGE 6
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PAGE 24
TABLE 1-1
GROUNDWATER ELEVATION SUMMARY
MONITORING AND RECOVERY WELLS
STRATIGRAPHIC LAYER 1
JUNE, 2007
OCTOBER, 2007
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PAGE 26
TABLE 1-2
GROUNDWATER ELEVATION SUMMARY
MONITORING AND RECOVERY WELLS
STRATIGRAPHIC LAYER 2
JUNE, 2007
OCTOBER, 2007
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PAGE 1
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PAGE 2
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PAGE 29
TABLE 1-3
GROUNDWATER ELEVATION SUMMARY
MONITORING AND RECOVERY WELLS
STRATIGRAPHIC LAYER 3
JUNE, 2007
OCTOBER, 2007
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PAGE 1
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PAGE 2
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TABLE 1-4
GROUNDWATER ELEVATION SUMMARY
MONITORING AND RECOVERY WELLS
STRATIGRAPHIC LAYER 4
JUNE, 2007
OCTOBER, 2007
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PAGE 1
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PAGE 2
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TABLE 1-5
GROUNDWATER ELEVATION SUMMARY
MONITORING AND RECOVERY WELLS
STRATIGRAPHIC LAYER 5
JUNE, 2007
OCTOBER, 2007
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PAGE 37
TABLE 2
LABORATORY ANALYTICAL REPORT SUMMARY
ARGUS ANALYTICAL, INC.
JUNE, 2007
OCTOBER, 2007
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PAGE 1
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PAGE 2
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PAGE 3
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PAGE 4
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PAGE 5
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PAGE 6
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PAGE 44
TABLE 2-1
LABORATORY ANALYTICAL REPORT SUMMARY
ARGUS ANALYTICAL, INC.
STRATIGRAPHIC LAYER 1
JUNE, 2007
OCTOBER, 2007
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PAGE 46
TABLE 2-2
LABORATORY ANALYTICAL REPORT SUMMARY
ARGUS ANALYTICAL, INC.
STRATIGRAPHIC LAYER 2
JUNE, 2007
OCTOBER, 2007
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PAGE 1
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PAGE 2
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TABLE 2-3
LABORATORY ANALYTICAL REPORT SUMMARY
ARGUS ANALYTICAL, INC.
STRATIGRAPHIC LAYER 3
JUNE, 2007
OCTOBER, 2007
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PAGE 1
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PAGE 2
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TABLE 2-4
LABORATORY ANALYTICAL REPORT SUMMARY
ARGUS ANALYTICAL, INC.
STRATIGRAPHIC LAYER 4
JUNE, 2007
OCTOBER, 2007
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PAGE 2
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TABLE 2-5
LABORATORY ANALYTICAL REPORT SUMMARY
ARGUS ANALYTICAL, INC.
STRATIGRAPHIC LAYER 5
JUNE, 2007
OCTOBER, 2007
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PAGE 57
TABLE 3
HISTORICAL (ORIGINAL TO CURRENT)
TCE GROUNDWATER ANALYTICAL SUMMARY – ALL WELLS
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PAGE 2
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PAGE 3
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PAGE 4
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PAGE 5
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PAGE 6
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PAGE 7
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PAGE 65
TABLE 3-1
HISTORICAL (ORIGINAL TO CURRENT)
TCE GROUNDWATER ANALYTICAL SUMMARY
STRATIGRAPHIC LAYER 1
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TABLE 3-2
HISTORICAL (ORIGINAL TO CURRENT)
TCE GROUNDWATER ANALYTICAL SUMMARY
STRATIGRAPHIC LAYER 2
OCTOBER, 2007
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TABLE 3-3
HISTORICAL (ORIGINAL TO CURRENT)
TCE GROUNDWATER ANALYTICAL SUMMARY
STRATIGRAPHIC LAYER 3
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PAGE 2
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TABLE 3-4
HISTORICAL (ORIGINAL TO CURRENT)
TCE GROUNDWATER ANALYTICAL SUMMARY
STRATIGRAPHIC LAYER 4
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PAGE 2
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TABLE 3-5
HISTORICAL (ORIGINAL TO CURRENT)
TCE GROUNDWATER ANALYTICAL SUMMARY
STRATIGRAPHIC LAYER 5
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TABLE 4
COMPOSITE HISTORICAL TCE GROUNDWATER ANALYTICAL SUMMARY
MONITORING AND RECOVERY WELLS – ALL
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PAGE 4
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PAGE 5
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PAGE 7
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TABLE 4-1
COMPOSITE HISTORICAL TCE GROUNDWATER ANALYTICAL SUMMARY
MONITORING AND RECOVERY WELLS
(STRATIGRAPHIC LAYER 1)
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TABLE 4-2
COMPOSITE HISTORICAL TCE GROUNDWATER ANALYTICAL SUMMARY
MONITORING AND RECOVERY WELLS
(STRATIGRAPHIC LAYER 2)
OCTOBER, 2007
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PAGE 90
INSERT TABLE 4-2
PAGE 1
OCTOBER, 2007
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INSERT TABLE 4-2
PAGE 2
OCTOBER, 2007
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TABLE 4-3
COMPOSITE HISTORICAL TCE GROUNDWATER ANALYTICAL SUMMARY
MONITORING AND RECOVERY WELLS
(STRATIGRAPHIC LAYER 3)
OCTOBER, 2007
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PAGE 93
INSERT TABLE 4-3
PAGE 1
OCTOBER, 2007
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INSERT TABLE 4-3
PAGE 2
OCTOBER, 2007
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INSERT TABLE 4-3
PAGE 3
OCTOBER, 2007
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PAGE 96
TABLE 4-4
COMPOSITE HISTORICAL TCE GROUNDWATER ANALYTICAL SUMMARY
MONITORING AND RECOVERY WELLS
(STRATIGRAPHIC LAYER 4)
OCTOBER, 2007
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PAGE 97
INSERT TABLE 4-4
PAGE 1
OCTOBER, 2007
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INSERT TABLE 4-4
PAGE 2
OCTOBER, 2007
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INSERT TABLE 4-4
PAGE 3
OCTOBER, 2007
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PAGE 100
TABLE 4-5
COMPOSITE HISTORICAL TCE GROUNDWATER ANALYTICAL SUMMARY
MONITORING AND RECOVERY WELLS
(STRATIGRAPHIC LAYER 5)
OCTOBER, 2007
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INSERT TABLE 4-5
OCTOBER, 2007
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TABLE 5
GRS OPERATIONAL SUMMARY
MARCH, 2000 THROUGH JUNE, 2007
OCTOBER, 2007
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INSERT TABLE 5
PAGE 1
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INSERT TABLE 5
PAGE 2
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TABLE 5
PAGE 3
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TABLE 5
PAGE 4
OCTOBER, 2007
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TABLE 5
PAGE 5
OCTOBER, 2007
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TABLE 5
PAGE 6
OCTOBER, 2007
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TABLE 5
PAGE 7
OCTOBER, 2007
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TABLE 5
PAGE 8
OCTOBER, 2007
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PAGE 111
GRAPH 1
CUMULATIVE VOLATILE ORGANIC COMPOUNDS (VOCs) REMOVED
MARCH, 2000 TO JUNE, 2007
OCTOBER, 2007
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INSERT GRAPH 1
OCTOBER, 2007
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FIGURE 1
SITE LAYOUT
OCTOBER, 2007
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INSERT FIGURE 1
OCTOBER, 2007
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PAGE 115
FIGURE 2-1
GROUNDWATER ELEVATION CONTOUR MAP
(STRATIGRAPHIC LAYER 1)
OCTOBER, 2007
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PAGE 116
INSERT FIGURE 2-1
OCTOBER, 2007
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FIGURE 2-2
GROUNDWATER ELEVATION CONTOUR MAP
(STRATIGRAPHIC LAYER 2)
OCTOBER, 2007
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PAGE 118
INSERT FIGURE 2-2
OCTOBER, 2007
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FIGURE 2-3
GROUNDWATER ELEVATION CONTOUR MAP
(STRATIGRAPHIC LAYER 3)
OCTOBER, 2007
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INSERT FIGURE 2-3
OCTOBER, 2007
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FIGURE 2-4
GROUNDWATER ELEVATION CONTOUR MAP
(STRATIGRAPHIC LAYER 4)
OCTOBER, 2007
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INSERT FIGURE 2-4
OCTOBER, 2007
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FIGURE 2-5
GROUNDWATER ELEVATION CONTOUR MAP
(STRATIGRAPHIC LAYER 5)
OCTOBER, 2007
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INSERT FIGURE 2-5
OCTOBER, 2007
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FIGURE 3-1
TCE CONCENTRATION MAP
(STRATIGRAPHIC LAYER 1)
OCTOBER, 2007
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INSERT FIGURE 3-1
OCTOBER, 2007
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FIGURE 3-2
TCE CONCENTRATION MAP
(STRATIGRAPHIC LAYER 2)
OCTOBER, 2007
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INSERT FIGURE 3-2
OCTOBER, 2007
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FIGURE 3-3
TCE CONCENTRATION MAP
(STRATIGRAPHIC LAYER 3)
OCTOBER, 2007
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INSERT FIGURE 3-3
OCTOBER, 2007
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FIGURE 3-4
TCE CONCENTRATION MAP
(STRATIGRAPHIC LAYER 4)
OCTOBER, 2007
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INSERT FIGURE 3-4
OCTOBER, 2007
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FIGURE 3-5
TCE CONCENTRATION MAP
(STRATIGRAPHIC LAYER 5)
OCTOBER, 2007
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INSERT FIGURE 3-5
OCTOBER, 2007
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FIGURE 4
SYSTEM RECOVERY WELL(S) VACUUM READINGS
(STRATIGRAPHIC LAYERS 1 AND 2)
OCTOBER, 2007
APPENDIX A
GRS MONTHLY LABORATORY ANALYTICAL REPORTS
EFFLUENT AND INFLUENT
JANUARY THROUGH JUNE, 2007
APPENDIX B
ARGUS ANALYTICAL, INC. LABORATORY REPORTS
SEMI-ANNUAL GROUNDWATER SAMPLING EVENT
JUNE, 2007