NCD003200383_19990811_Koppers Co. Inc._FRBCERCLA RA_Proposed Remedial Action Groundwater Monitoring Program-OCR

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LLIAM L. MEYER q, • ,, ,11::'
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NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WASTE MANAGEMENT
August 11, 1999
Memorandum
TO:
FROM:
RE:
Mr. Jay Zimmerman
Division of Water Quality
David B. Mattison, CHMM@
Environmental Engineer
Superfund Section
Proposed Remedial Action Groundwater Monitoring Program
Koppers Company, Inc. NPL Site
Morrisville, Wake County
ThermoRetec Consulting Corporation, on behalf of Beazer East, Inc., has completed
the Proposed Remedial Action Groundwater Monitoring Program for the Koppers
Company, Inc. National Priorities List (NPL) site. The document being reviewed is
attached.
Please distribute this document to the appropriate personnel and submit any
comments to the NC Superfund Section. We would like to have the views and
permitting requirements of the Groundwater Section by September I, I 999 in order
to transmit any comments to the United States Environmental Protection Agency in
an expeditious manner.
If you or your staff have any questions or comments, please feel free to call me at
[phone], extension 349.
Attachment
401 OBERLIN ROAD, SUITE 150, RALEIGH, NC 27605
PHONE[phone] FAX [phone]S
AN EQUAL OPPORTUNITY/ AFFIRMATIVE ACTION EMPLOYER· 60% RECYCLE0/10% POST-CONSUMER PAPER
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Smart Solutions. Positive Outcomes.
Proposed Remedial Action
Groundwater Monitoring Program
Former Koppers Company, Inc. Superfund
Site, Morrisville, North Carolina
Prepared by:
ThermoRetec Consulting Corporation
9 Damonmill Square, Suite 3A
Concord, Massachusetts 01742
ThermoRetec Project No.: 4-3624
Prepared for:
Beazer East, Inc.
One Oxford Centre, Suite 3000
Pittsburgh, PA 15219
August 1999
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Proposed Remedial Action
Groundwater Monitoring Program
Former Koppers Company, Inc. Superfund
Site, Morrisville, North Carolina
Prepared by:
ThermoRetec Consulting Corporation
9 Damon Mill Square, Suite 3A
Concord, MA 01742
ThermoRetec Project No.: 4-3624
Prepared for:
Beazer East, Inc.
One Oxford Centre, Suite 3000
Pittsburgh, PA 15219
Prepared by:
~~I\~ fj,b Lara Kelmar, ProJect Manager
August 1999
G:IBEAZERIRALEIGH\1999\gw_mon_plan.wpd
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Table of Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
2 Previous Analytical Findings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
3 Groundwater Monitoring Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
List of Tables
Table 2-1 Summary of Historical Groundwater Quality Data for Constituent of
Interest, First Quarter 1990 through First Quarter 1 998
Table 2-2 PCDD/PCDF Analytical Results and Toxicity Equivalence Concentrations,
January I 998
List of Figures
Figure 2-1
Figure 2-2
Figure 2-3
Groundwater Elevation Contours Shallow Wells, January 21, 1998
Groundwater Elevation Contours Intermediate/Deep Wells, October 21,
1998
Monitoring Well Locations
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1 Introduction
Beazer East, Inc. (Beazer) has been operating a groundwater extraction and
treatment system at this former wood treating facility since February 1997. The
site, located approximately one mile north of Morrisville, North Carolina, was
purchased by Koppers Company, Inc. in 1962 and ceased operations in
September 1986. The Koppers Company was acquired by Beazer in 1988.
During plant operation, two types of wood treatment activities were conducted,
a lamination process and a wood preserving process called CELLON. The
CELLON process used from approximately 1968 to 197 5 consisted of press-
injecting pentachlorophenol in a liquified butane isopropyl ether solution into the
wood. Excess pentachlorophenol salt was removed by steaming the wood. The
wash solution from the steaming process was filtered to recover
pentachlorophenol, then the solution was discharged into a fire pond on the site.
The site was placed on the National Priorities List (NPL) by the Environmental
Protection Agency (EPA) in March of 1989. Remedial Action activities
conducted at the site include: soil removal and off-site incineration; surface water
treatment and discharge; and groundwater extraction, treatment, and discharge
under authorization by the State of North Carolina. As noted in the Record of
Decision (ROD), the groundwater treatment system is to continue to operate
until the following cleanup standards are achieved: 30 pg!L for dioxins/furans, l
µg!L for pentachlorophenol and 20 µg!L for 2,4-dichlorophenol.
During the first year of full-scale groundwater extraction and treatment
operations, groundwater was monitored on a quarterly basis in accordance with
the Baseline Groundwater Data Summary Report (Fluor Daniel GTI, September
1996). The results of these monitoring activities were reported in the Six-Month
Groundwater Remedial Action Monitoring Report (Fluor Daniel GTI, November
1997 and One-Year Groundwater Remedial Action Monitoring Report (Fluor
Daniel GTI, June 1998). The Proposed Groundwater Monitoring Program
presents a summary of the analytical findings reported in these two documents
and a proposed groundwater monitoring plan to evaluate the continuing
performance of the groundwater remediation system at the site.
Introduction 1-1
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2 Previous Analytical Findings
As reported in the Six-Month and One-Year Groundwater Remedial Action
Monitoring Reports (Fluor Daniel GTI, November, 1997 and June 1998),
groundwater elevation data were collected during all four quarter's monitoring
activities from on-site and near off-site monitoring wells. This information was
used to develop potentiometric maps to assess the hydraulic influence of
groundwater pumping at well PW-I for the shallow and bedrock monitoring
intervals. Figures 2-1 and 2-2 present the results for the most recent monitoring
event for the shallow and intermediate/deep monitoring wells. Figure 2-1 for the
shallow monitoring interval indicates the continued presence of a potentiometric
high in the north central-area of the site and an elongated area of depression
originating from this potentiometric high area to the west of pumping well PW-1
that extends to the northwest.
Groundwater samples were collected from fifteen monitoring wells (shown in
Figure 2-3) and the groundwater pumping well PW-01 during the January 1998
monitoring event and were analyzed for pentachlorophenol and 2,4-
dichlorophenol by EPA Method 8270B, using ion trap technology. This
analytical method provides a detection limit of l µefl for pentachlorophenol and
0.2 µ'lfl for 2,4-dichlorophenol. Three of the fifteen samples were also analyzed
for dioxins and furans (PCDD/PCDF) using EPA Method 8290. These samples
for dioxins and furans were collected from the three wells where
pentachlorophenol concentrations exceeded the cleanup standard of I µ'lfl during
both the Baseline and Six-Month monitoring events.
A summary of historical pentachlorophenol and 2,4-dichlorophenol groundwater
data collected from the site since 1990 is presented in Table 2-1. This data
includes the results from the July 1997 and January 1998 sampling events
conducted after the initiation of full-scale groundwater extraction operations. As
shown in Table 2-1, the following wells were found to have concentrations of
pentachlorophenol and 2-4-dichlorophenol which meet the specified cleanup
standards during the last two sampling events (at a minimum):
• C-01B
• C-09B
• C-I0A
• C-12A
• C-13B
• C-14A
• C-15B
Previous Analytical Findings 2-1
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Proposed &medial Action Groundwater Monitoring Program
• C-27A
• C-27B
• C-28A
Additionally, monitoring well C-14B has reported 2,4-dichlorophenol
concentrations which meet the required cleanup standards for the last two
sampling events.
Analytical results for the dioxin/furan analyses are reported in Table 2-2. The
laboratory results for each PCDD/PCDF congener are multiplied by the Toxicity
Equivalent Factor (TEF) relative to 2,3,7,8-TCDD. The TEC values are summed
and compared to the cleanup standard of 30 pg/L for 2,3,7,8-TCDD. All samples
were less than this cleanup standard. See the One-Year Groundwater Remedial
Action Monitoring Report (Fluor Daniel GTI, June 1998) for a full discussion of
the sampling and analytical results for the January 1998 sampling event.
Previous Ana!Ytical Findings 2-2
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J Groundwater Monitoring Program
The first year performance verification program demonstrated that concentrations
of PCDD/PCDF are below the groundwater cleanup standards specified in the
ROD in all wells. With the exception of wells C-I0B, C-1 lB, C-14B, C-29B, and
M-04 (where insufficient water was present to sample during the January 1998
sampling event), the groundwater cleanup standards for pentachlorophenol and
2,4-dichlorophenol have been achieved also. As discussed during the July 29,
1999 site meeting between representatives of the USEPA, North Carolina
Department of Environment and Natural Resources (NCDENR), and Beazer, the
next step of the groundwater monitoring program will foe.us ort demonstrating
that the cleanup standards have been met in the site monitoring wells through a
program of continued sampling and analysis.
The proposed groundwater monitoring program begins with a one time round of
groundwater sampling and analysis for pentachlorophenol and 2,4-dichlorophenol
in the site wells shown in Figure 2-3. The results from this sampling and analysis
event will be used to establish current groundwater conditions at the site and will
be used in conjunction with the results of the January 1998 sampling event to
determine which wells have been demonstrated to meet the specified groundwater
cleanup standards. Wells that meet the cleanup standards in both of these
monitoring events, will be placed onto an annual monitoring schedule.
Following the initial sampling event, quarterly sampling of all wells with reported
results above the specified cleanup levels will continue until four consecutive
sampling events indicate that the concentrations of pentachlorophenol and 2,4-
dichlorophenol meet the specified cleanup levels. As the cleanup goals are
demonstrated in a well by the four consecutive analytical findings at or below the
specified cleanup goals, that well will go to the annual sampling program.
Because dioxins and furans are impurities of pentachlorophenol, there is the
potential for PCDD/PCDF to be found where pentachlorophenol is detected. For
this monitoring program, wells that have concentrations of pentachlorophenol
at or above the specified cleanup level during any sampling event will be sampled
and analyzed for PCDD/PCDF during the next quarterly sampling event. Wells
that have detectable concentrations of pentachlorophenol in more than one
quarter per calendar year will be sampled and analyzed for PCDD/PCDF semi-
annually.
When the findings for all wells meet the specified cleanup goals, a request will
be submitted to shut down the extraction system and a long-term monitoring
Groundwater Monitoring Program 3-1
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Proposed Remedial Action Groundwater Monitoring Program
system will be developed to monitor groundwater quality at the site. Thirty days
following notification of the proposed system modification, the system will be
shut down and the long-term monitoring system will continue until the next five
year review period.
During the quarterly sampling events, water level elevations will be taken at all
wells at the site during each sampling event to continue to observe hydraulic
conditions. All sampling activities will be conducted according to the Field
Sampling and Analysis Plan developed in June 1993 as part of the Remedial
Design.
Groundwater Monitoring Program 3-2
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Table 2-1
Summary of Historical Groundwater Quality Data for Constituents of Interest
First Quarter 1990 through First Quarter 1998
Former Koppers Superfund Site
Morrisville, North Carolina
Well Sampling Event Pentachlorophenol 2,4-Dichlorophenol
(µg/L) (µg/L)
C-018 Jul-90 4U 35.8
C-018 Oct-90 7.77 J 9.24 J
C-018 Oct-93 10.0 U 10.0 U
C-018 Mar-96 1 U 0.2 U
C-018 Jan-98 1 U 0.2 U
C-098 Jul-90 1 U 0.731 U
C-098 Oct-90 1 U 0.5 U
C-098 Nov-93 10.0 U 10.0 U
C-098 Mar-96 1 U 0.2 U
C-098 .lan-98 1 U 0.2 U
C-10A Jun-90 3.82 0.5 U
C-10A Oct-90 1 U 0.5 U
C-10A Nov-93 10.0 U 10.0 U
C-10A Mar-96 1 U 0.2 U
C-10A Jan-98 1 U 0.2 U
C-108 Oct-90 113 21.8
C-108 Jan-92 23.9 312
C-108 Nov-93 10.0 U 10.0 U
C-108 Mar-96 2J 0.2 U
C-108 Jul-97 11 1
C-108 Jan-98 1 U 0.2 U
C-118 Jul-90 9.8 0.5 U
C-118 Oct-90 12.6 0.5
C-118 Nov-93 10.0 U 10.0 U
C-118 Mar-96 29 0.2 U
C-11 B Dup. Mar-96 26 0.2 U
C-118 Jul-97 1 U 1
C-118 Jan-98 2 0.2 U
C-11 B Duo. Jan-98 1 0.2 U
* Reproduced from Fluor Daniel GTI (June 1998)
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Table 2-1
Summary of Historical Groundwater Quality Data for Constituents of Interest
First Quarter 1990 through First Quarter 1998
Former Koppers Superfund Site
Morrisville, North Carolina
Well Sampling Event Pentachlorophenol 2,4-Dichlorophenol
(µg/L) (µg/L)
C-12A Jun-90 1 U 0.5 U
C-12A Oct-90 1 U 0.5 U
C-12A Oct-93 10.0 UJ 10.0 UJ
C-12A Mar-96 1 U 0.2 U
C-12A Jan-98 1 U 0.2 U
C-13B Jun-90 1 U 0.5 U
C-13B Oct-90 1 U 0.5 U
C-13B Jan-92 1 U 0.2 U
C-13B Nov-93 10.0 U 10.0 U
C-13B Mar-96 1 U 0.2 U
C-13B Jan-98 1 U 0.2 U
C-14A Jun-90 889 0.5 U
C-14A Oct-90 2010 0.5 U
C-14A Nov-93 1600 10.0 U
C-14A Mar-96 3500 0.2 J
C-14A Jul-97 0.08 U 0.2 U
C-14A Jan-98 1 U 0.2 U
C-14B Jun-90 499 0.5 U
C-14B Oct-90 124 0.5 U
C-14B Nov-93 10.0 U 10.0 U
C-14B Mar-96 19 0.2 U
C-14B Jul-97 14 0.2 U
C-14B Jan-98 1 U 0.2 U
C-15B Jul-90 1.60 0.5 U
C-15B Oct-90 1 U 0.5 U
C-15B Jan-92 0.5 U 0.5 U
C-15B Nov-93 10.0 U 10.0 U
C-15B Mar-96 1 U 0.2 U
C-15B Jan-98 1 U 0.2 U
* Reproduced from Fluor Daniel CTI (June 1998)
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Table 2-l
Summary of Historical Groundwater Quality Data for Constituents of Interest
First Quarter 1990 through First Quarter 1998
Former Koppers Superfund Site
Morrisville, North Carolina
Well Sampling Event Pentachlorophenol 2,4-Dichlorophenol
(µg/L) (µg/L)
C-27A May-90 1 UJ 0.5 UJ
C-27A Oct-90 1 U 0.5 U
C-27A Jan-92 48.4 J 0.5 U
C-27A Nov-93 10.0 U 10.0 U
C-27A Mar-96 1 U 0.2 U
C-27A Jan-98 1 U 0.2 U
C-278 Jun-90 4.23 0.5 U
C-278 Oct-90 4.18 U 0.5 U
C-278 Nov-93 10.0 U 10.0 U
C-278 Mar-96 2J 0.2 UJ
C-278 Jul-97 1 U 0.2 U
C-278 Dup. Jul-97 1 U 0.2 U
I" .?79 Jan-98 1 U 0.2 U
C-28A May-90 1 U 0.5 U
C-28A Oct-90 26 0.5 U
C-28A Nov-93 10.0 U 10.0 U
C-28A Mar-96 1 U 0.2 U
C-28A Jan-98 . 1 U 0.2 U
C-298 Jul-90 591 0.5 U
C-298 Oct-90 968 0.5 U
C-298 Nov-93 17 10.0 U
C-298 Mar-96 1 U 0.3
C-298 Jan-98 170 0.2 U
M-04 Jul-90 99.2 0.5 U
M-04 Oct-90 69.1 0.5 U
M-04 Mar-96 10 0.2 U
M-04 Jul-97 0.08 U 0.2 U
M-04 Jan-98 NS NS
* Reproduced from Fluor Daniel GT! (June 1998)
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Table 2-1
Summary of Historical Groundwater Quality Data for Constituents of Interest
First Quarter 1990 through First Quarter 1998
Former Koppers Superfund Site
Morrisville, North Carolina
Well Sampling Event Pentachlorophenol
(µg/L)
PW-01 Oct-93 120
PW-01 Dup. Oct-93 159
PW-01 Mar-96 29
PW-01 Jul-97 91
PW-01 Jan-98 6
Notes:
1 NS indicates that the well was not sampled.
2 U indicates that the compound was analyzed for by not detected.
3 J indicates an estimated value.
* Reproduced from Fluor Daniel GT! (June 1998)
F,\PROJECTS\4-3624\GW _MON\TAB2-1.WPD
2,4-Dichlorophenol
(µg/L)
10.0 U
10.0 U
0.4
0.2 U
0.2 U
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Table 2-2
PCDD/PCDF Analytical Results and Toxicity Equivalence Concentrations
January 1998
Compound (pg/L) TEF
DIOXIN
2,3,7,8-TCDD 1
1,2,3,7,8-PeCDO 0.5
1,2,3,4,7,S.HxCOD 0.1
1,2,3,6,7,8-HxCOD 0.1
1,2,3, 7 ,e.e.HxCDO 0.1
1,2,3,4,6,7,8-HpCOO 0.01
ocoo 0.001
Total TCODs
Total PECDOs
Total HxCDOs
Total HpCOOs
FURANS
2.3,7.8-TCOF 0.1
1.2.3,7,8-PeCOF 0.05
2,3,4.7,8-PeCOF 0.5
1,2,3,4,7,8-HxCOF 0.1
1,2,3,6,7,8-HxCDF 0.1
2,3,4,6,7,8-HxCOF 0.1
1,2,3,7,8,9-HxCDF 0.1
1.2,3,4,6,7,8-HpCOF 0.01
1,2,3,4,7 ,8,9-HpCDF 0.01
OCOF 0.001
Total TCDFs
Total PeCOFs
Total HxCDFs
Total HpCDFs
Total TEC (pgll)
Notes:
Fonner Koppers Superfund Site
Morrisville, North Carolina
C10B C-11B
RNUtl TEC Result TEC
1.3 U NO 0.88U ND
1.4 U NO 0.54 U NO
2.6 0.26 1.3 U NO
7.6 0.76 1.2 U NO
◄.1 0.41 1.1 U NO
190 1.9 8.9 0.0089
2500 2.5 78 0.078
1.4 U . 0.88 U
1.4 U . 0.54 U .
42 1,3 U .
330 . 14
0.60 U NO 0.38 U NO
, 1.2 U NO 0.55 U NO
1.1 u NO 0.47 U ND
1.6U NO 0.79 U NO
1.4 U NO 0,89 U NO
1.6 U NO 26 2.6
1.1 U NO 0.88 U NO
57 0.57 3.5 0.035
2.4 0.024 0.25 U NO
150 0.15 9.0 0.009
0.65 U . 0.38 U .
4.7 0.55 U .
37 26 .
150 . 8.2
6.6 2.8
C118 Oup.
Reeult TEC
1.2 U NO
0.47 U ND
1.7 U ND
1.8 U ND
1.5 U NO
12 0.12
120 0.12
1.2 U
0.47 U
1.7 U
19 .
0.34 U ND
0.51 U NO
0.39 U NO
0.62 U NO
0.69 U NO
0.67 U NO
0.69 U NO
4.5 0.045
0.62 U ND
14 0.014
0.34 U
0.51 U .
1.1
11
0.3
PCDD/PCDF groundwater data from resampling event on February 11, 1998
TEF -Toxicity equivalence factor (I TEF/89 EPA, March 1989)
TEC -Toxicity equivalence concentration (relative to 2,3,7,8-TCDD)
ND -Not Detected
U -Compau~~ was analyzed for by not detected
• Reproduced from Fluor Daniel GT! (June 1998)
PW01
Result
1.2 U
0.54 U
a.nu
0.70 U
0.66 U
1.9
14U
1.2U
0.54 U
a.nu
1.9
0.39 U
1.0U
0.83 U
0.27 U
0.30 U
0.29 U
0.29 U
0.53 U
0.50 U
2.0
0.39 U
1.1 U
0.03 U
0.53 U
TEC
NO
ND
ND
NO
NO
0.019
0.014
.
.
.
ND
NO
ND
ND
NO
NO
NO
NO
NO
0.002
.
.
.
.
0.035
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GROUNDWATER MONITORING PROGRAM
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4-3624
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GROUNDWATER ELEVATION CONTOURS
SHALLOW WELLS -JANUARY 21, 1998
FORMER KOPPERS COMPANY, INC. SITE
MORRISVILLE, NORTH CAROLINA
FIGURE: 2-1
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GROUNDWATER MONITORING PROGRAM
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GROUNDWATER ELEVATION CONTOURS
INTERMEDIATE/DEEP WELLS -OCTOBER 21, 1997
FORMER KOPPERS COMPANY, INC. SITE
MORRISVILLE, NORTH CAROLINA 4-3624
°"TE: 8/99 ORWN: F'O-CTI nu:: 4-3634TI FIGURE: 2-2
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)
.ThermoRetec
0
0
0
0
c:::::J
c:=J =
0
()
1/J,
D
if LJ
· LEGEND
+ MONITORING WELL LOCAllON
BEAZER E4ST, INC.
PROPERTY BOUNOARY
UNIT STRUCTURES INC.
PROPERTY BOUNDARY
SCALE (FELl)
0 200 400 600
•REPRODUCED FROM FLUOR DANIEL GTI, JUNE 1998
GROUNDWATER MONITORING PROGRAM
BEAZER EAST, INC.
4-3624
Oo\TE: 8/99 ORWN: F"O-GTI F'U: 4-J6J-4TI
MONITORING WELL LOCATIONS
FORMER KOPPERS COMPANY, INC. SITE
MORRISVILLE, NORTH CAROLINA
FIGURE: 2-3