NCD095458527_20000614_FCX Inc. (Statesville)_FRBCERCLA SPD_December 1999 Sampling for Monitored Natural Attenuation OU-3-OCR

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RECE\VEO
JU~ 16 2000
E.or\JND sE.C1101'-l SI.JP n
December 1999 Sampling for
Monitored Natural Attenuation at
FCX-Statesville Superfund Site OU3
Statesville, North Carolina
prepared for
El Paso Energy Corporation
1001 Louisiana Street
Houston, Texas 77002
June 2000
27-60313.015
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Environmemal Engineering & Consulting
227 French Landing Drive
Suite 500
Nashville, TN 37228-1605
Tel: [phone]
Fax: [phone]
June 14, 2000
Mr. Roger Towe
El Paso Energy Cotporation
1001 Louisiana Street
Houston, TX 77002
27-60313.015
RE: Results of December 1999 Sampling for Monitored Natural Attenuation at
Operable Unit Three (OU3) of the FCX-Statesville Superfund Site
Dear Roger:
The Record of Decision (ROD) for.Operable Unit.Three (OU3) at the FCX-
Statesville Superfund Site (the Site) includes monitored natural attenuation as part of
the remedy in addition to active source control. Currently, the monitored natural
attenuation includes semiannual groundwater sampling of selected wells lfor specific
parameters as described in the Pre-Final Remedial Design Report ["Pre-Final
Remedial Design Report for Operable Unit Three (OU3), FCX-Statesville Superfund
Site, Statesville, North Carolina" dated September 1999 by Brown and Caldwell].
The primary constituent of concern in OU3 is tetrachloroethene, also referred to as
perchloroethene (PCE).
This letter report presents the results of the third comprehensive round of
monitored natural attenuation sampling that took place in December 19~9. The first
set of monitored natural attenuation sampling took place in December 1998 and
included some limited sampling in January 1999. These results were reported in the
pre-design investigation (PDI) report ("Pre-Design Investigation Report for
Operable Unit Three (OU3), FCX-Statesville Superfund Site, Statesville, North
Carolina" dated March 1999 by Brown and Caldwell). The results of the second_
comprehensive round of sampling, which occurred in June 1999, was pr~sented and
discussed in a letter report dated December 2, 1999. Following is a brief description
of the December 1999 sampling, a compilation of the sampling results, ap evaluation
of the plume stability, the scoring results for natural attenuation, and conclusions.
DESCRIPTION OF SAMPLING
Sampling of monitoring wells for groundwater quality, including analysis for vol~tile
organic compounds (VOCs) and metals designated by the United States
Environmental Agency (USEPA) and analysis for monitored natural attenuation
parameters; was conducted during the period December 7 through December 17,
1999. The wells sampled are listed in Table 1. One well listed in the work plan was
not sampled during the December 1999 sampling event and two other wells were
purged with a bailer. These two wells were analyzed for a limited number of
parameters due to the limited volume of groundwater recovered because of the low
\ \BO&I0)\rROJECfS\I'ROJ\60313.015\1032400.doc
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Mr. Roger Towe
June 14, 2000
Page 2
water table level that occurred during that period. These wells are indicated by
footnotes in Table 1. The monitoring wells associated with OU3 are sh6wn in
Figure 1. Figures 2 and 3 show the shallow and intermediate isoconcentration
contours, respectively, for PCE based on sampling data through January: 1999. The
contours have not been redrawn because relatively few changes in voe
concentrations have been observed in the two sampling events since January 1999.
The protocols for sampling are the same as previously used including slow purge
techniques. Details of the sampling method are described in the document entitled
"Remedial Design Work Plan for Operable Unit Three (OU3), FCX-Statesville
Superfund Site, Statesville, North Carolina" dated July 1998 by '
ECKENFELDER INC. (now Brown and Caldwell). A summary of the chemical
analyses and analytical method references are listed in Table 2.
As discussed in the PDI report, the primary constituents of concern in OU3 are
PCE and its degradation products. Additionally, three metals, iron, manganese, and
aluminum, were previously identified as exceeding regulatory levels and are included
in the sampling plan, as were Voes and parameters relevant to natural attenuation.
SAMPLING RESULTS
The sampling results for the wells used for monitored natural attenuation1are
presented in Table 3. This table presents results from the December 1998,January
1999, June 1999, and December 1999 sampling and from the previous sampling
events from these wells. Table 3 presents the data in the following order::the Voe
results, aluminum results, and bioparameter results, which include iron and
manganese. The first five columns provide monitoring well identification and
information including sampling dates. The voe data are organized with the first
four columns containing PCE and its degradation (or daughter) products:
trichloroethene (fCE), cis-1,2-dichloroethene (cis-1,2-DCE), and vinyl chloride
(VC). The remaining columns of voe data are organized in alphabetical order. The
bioparameter data are grouped into the following four categories: electron• acceptors,
products of degradation (including PCE daughter product ethene), nutrients, and
geochemical parameters.
The following summarizes the PCE data according to direction from the source
(north and south) and by depth (shallow and intermediate):
Source Area: The PCE concentrations from well W-17s have ranged from
42,000 µg/L to 108,700 µg/L. The most recent and highest concentration,
however, was obtained with a bailed sample rather than by the low purge
method. The range of concentrations is within normal variability for source
\\BCNSH0J\PROJECTS\PROJ\60313.015\1032400.doc
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Mr. Roger Towe
June 14, 2000
Page 3
areas; however, there may be an upward trend. This well is located within the
area to be treated by air sparging/soil vapor extraction (AS/SVE).
South Area of Shallow Zone: The PCE concentrations have remained very
constant at 190 µg/L to 220 µg/L in W-5s and less than 2.0 µg/L in the
farthest downgradient well, W-24s. The PCE concentration from well W-22s
had ranged from 3.6 µg/L to 4.0 µg/L and was 11 µg/L during th~ latest
round of sampling. Additional rounds of sampling would be required to
determine if there is a trend.
South Area of Intermediate Zone: The PCE concentrations have fluctuated
between 25 µg/L and 55 µg/L in W-5i, have decreased in W-22i frbm
170 µg/L to 65 µg/L (only a factor of two which cannot be viewed as trend),
varied between 15 µg/L and 52 µg/L in W-29i, and have increased1from
0.26 µg/L to 0.95 µg/L at the farthest downgradient well, W-32i (because of
the low concentrations, no trend can be identified).
North Area of Shallow Zone: The PCE concentrations have trended
upwards in W-19s from 26 µg/L to 420 µg/L but appear to be becbming more
stable; had trended upward from 3 µg/L to 48 µg/L in W-20s and is now
42 µg/L; and have remained less than 1.0 µg/L in W-31s, the farthest
downgradient well.
I
North Area of Intermediate Zone: The PCE concentrations have fluctuated
between 170 µg/L and 640 µg/L in W-28i with the December 1995 results
nearly identical to the June 1999 results; trended upwards in W-30i from
500 µg/L to 1,100 µg/L forthe June 1999 and to 1,200 µg/L for the
December 1999 sampling events, a factor of two; have fluctuated between
240 µg/L and 1,100 µg/L in W-20i with the most recent sample being nearly
the same concentration as the March 1996 sample; and have remained less than
1.0 µg/L in the farthest downgradient well, W-3 li, since it was first sampled in
November 1998.
North Area of the Deep Zone: W-20d, installed in 1998, may be decreasing
from a September 1998 high of 34 µg/L to a current level of 5.8 µg/L.
Background of Shallow Zone: The PCE concentrations remain le,ss than
1.0 µg/L in W-12s throughJune 1999 (no sample was collected in December
1999) and stable between 1.7 µg/L (December 1999) and 6.0 µg/L in W-18s.
Background of Intermediate Zone: The PCE concentrations remain
between 0.66 µg/L and 1.8 µg/L in W-lOi and between 1.5 µg/L and 3.0 µg/L
in W-12i.
\\BCNSH0J\PROJECTS\PROJ\60313. O ! S\l032400.doc
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Mr. Roger Towe
June 14, 2000
Page 4
EVALUATION OF PLUME STABILITY
The plume stability is evaluated using the primary evidence, which is the
groundwater VOC data, and the secondary evidence, which is the groundwater
bioparameter data.
Primary Evidence from VOC Data
Inspection of the data in Table 3 for PCE and _its daughter products reveals a
relatively stable plume from April 1994 through December 1999. For in.stance, over
this time the concentrations of PCE in W-5s located immediately south of the plant
building have ranged from 190 µg/L to 220 µg/L and in W-5i have fluctuated
between 25 µg/L and 55 µg/L. There appears to be no long-term trend for either
well. Furthermore, the data from W-5i suggests that some variability in VOC
concentrations irrespective of any trends should be anticipated.
There has been minimal fluctuation and no significant trends in the background, side
gradient, south shallow, or south intermediate, or the north shallow and the
intermediate wells located farthest downgradient. There may be an upward trend in
well W-17s. W-17s is located in the source area, which will be addressed'through
AS/SVE. There may have been an upward trend in some of the north shallow and
north intermediate wells located midway between the source area and the farthest
downgradient wells. The most recent data suggest a leveling off of concentrations or
that there are no long-term trends. The four wells located farthest downgradient
continue to have PCE concentrations of less than 1.0 µg/L.
The daughter products of PCE (TCE, cis-1,2-DCE, trans-1,2-DCE, vinyl chloride,
and ethene) continue to be present. Their concentrations remain relatively constant
relevant to PCE concentrations.
Other VOCs including 1,1,1-trichloroethane (1,1,1-TCA), 1,1,2-trichloroethane
(1,1,2-TCA) and the apparent degradation products 1,1-dichloroethane (l,1-DCA),
1,2-dichloroethane (1,2-DCA), and 1,1-dichloroethene (1,1-DCE) are present in a
few wells at relatively constant low levels. In a few cases, compounds reported to be
present in the December 1998 samples at concentrations barely exceeding detection
limits, were reported as not detected for the June 1999 and December 1999 sampling
events. Except for samples obtained from W-5s, the concentration of these
compounds remained below 10 µg/L.
\\BCNSH03\PROJECTS\PROJ\603 l 3. O I S\1032400.doc
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Mr. Roger Towe
June 14, 2000
Page S
Secondary Evidence from Bioparameter Data
The groundwater quality data with respect to plume stability and the pres,ence of
daughter products represent the primary lines of evidence that natural attenuation is
taking place. In addition to the primary evidence, secondary evidence for evaluation
of the occurrence of natural attenuation is provided by the bioparameter 'data in the
form of electron acceptors, products of degradation (in addition to the voe
daughter products discussed earlier), nutrients, and geochemical parameters. These
'data provide indirect evidence of reductive dechlorination except for eth~ne, ethane,
and chloride, which are degradation products. The presence of ethene arid ethane is
direct evidence of reductive dechlorination. This bioparameter data also provides
evidence of whether groundwater conditions are favorable for the continued
occurrence of reductive dechlorination. The data for this second type of parameters
are also presented in Table 3.
This is the third comprehensive monitored natural attenuation sampling event and
thus any apparent trends observed in this data may actually be normal variability in
groundwater data. Generally, the values obtained from the December 1999 sampling
event are quite similar to the values obtained from the June 1998 and December
1998 sampling events. Total metals, aluminum, iron, and manganese either increased
or decreased in some wells. For these wells, concentrations of all three metals
decreased by approximately the same relative amounts. This may reflect variations in
the amount of suspended fines in the samples rather than changes in conditions.
Reported dissolved oxygen concentrations have either remained constant or trended
downwards. This may reflect refinements in the sampling process or actual trends.
The volatile fatty acid results for the June 1999 sampling event were largely suspect
and are not reported in Table l The December 1999 volatile fatty acid data are
generally consistent with the 1998 data. In a few cases the reported values for the
soluble gases, methane, ethene, and ethane, either increased or decreased '
substantially. Since these gases can be easily lost during sampling, the higher of the
concentrations for each well might be more likely to represent field conditions,
however, no conclusions regarding trends in these parameters can be drav.in until
more data is obtained. However, the entirety of the data suggests no significant
trends in the bioparameter data.
SCORING RESULTS FOR NATURAL ATTENUATION USING US EPA
PROTOCOL
The Voe and bioparameter results have been used to score the OU3 monitoring
wells according to the USEPA Protocol (EPA/ 600/R-98/128, September ,1998) as a
means of providing another method of evaluating monitored natural attenuation
using the secondary evidence. The USEP A weighting (point assignment) system
used for the December 1998/January 1999 sampling event has been replaced by the
\\BCNSH0J\PROJECTSIPROJ\6031J.015\1032400.doe
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Mr. Roger Towe
June 14, 2000
Page 6
weighting system presented in the most recent version of the USEP A protocol
which contains some modifications from the previous version. Table 4 contains the
most recent point assignment system. The major differences from the point
assignment system that was previously used for the December 1998/Januaiy 1999
sampling event (refer to the PDI report) are that points are now subtracted if the pH
is outside the optimal range and points are no longer awarded for the presence of
1,1-DCE as a daughter product of 1,1,1-TCA. The laner change was made because
1,1-DCE is a chemical rather than biological degradation product of 1,1,1-TCA.
Following discussions with Dr. John T. Wilson of the USEP A we have in duded a
credit forthe presence of 1,1-DCE in the point assignment system because 1,1-DCE
does provide evidence of natural anenuation degradation mechanisms, although not
reductive dechlorination.
The total points awarded (scores) for the individual wells were recalculat~d for the
December 1998/Januaiy 1999 sampling event so that all sampling eventsJor
monitored natural anenuation parameters will have been evaluated using the same
point scoring protocol. Tables 5, 6, and 7 show the results of the point assignment
for the December 1998/Januaiy 1999, June 1999, and December 1999 s~pling
events, respectively. As a result of the revisions, some point totals have changed for
the two sampling events, largely because the new protocol subtracts 2 points for pH
values less than 5 or more than 10.0. However, in most cases where points were
subtracted for pH values less than 5.0, the values were only a few tenths of a pH unit
below 5.0. Furthermore, these lower pH values were quite similar to the pH values
reported for the background wells. This might indicate that groundwater .pH has
been in this range for an extended period of time and thus the native
microorganisms could be expected to have adapted to these conditions.
Point totals for the first sampling event have changed because the table initially
contained a mix of data from the June 1998 sampling event as well as the December
1998/J anuaiy 1999 sampling event.
There are some differences in assigned point values among the point totals for the
three sampling events. The differences reflect a number of factors:
• In some cases one or more parameters were not measured and thus points
could not be assigned for those particular parameters.
• In some cases relatively small changes in parameter values for w~lls being
scored resulted in significant changes in points awarded (e.g., DO values of
0.4 mg/L versus 0.06 mg/L correspond to points awarded of 3 versus 0,
respectively). Also, small changes in parameter values for the background
well can affect points awarded for chloride, carbon dioxide, and alkalinity.
\\BCNSH0J\pRQJECTS\PROJ\6031 J .0 I 511032400. doc
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Mr. Roger Towe
June 14, 2000
Page 7
' • In several wells where VOC concentrations were near the detection limit,
individual VOCs were present marginally above the detection limit for one
sampling event but not another.
Some wells received a relatively low number of ranking points because they were
downgradient or near the downgradient edge of the plume. Furthermore, the
differences between the concentrations of chloride, carbon dioxide, and 'alkalinity in
background well for the shallow zone and the background well for the intermediate
zone had an impact on the point totals.
The interpretation guide continues to suggest that the data provide limit~d to
adequate evidence of natural attenuation. Table 8 provides guidance from the
USEPA protocol for interpreting the total points awarded (scores) for th,e wells.
CONCLUSIONS
The following conclusions can be drawn from the current and historical data:
• There may be an upward trend in the PCE concentrations in the source
area well W-17s. This area will be addressed by AS/SVE.
• Generally, the plume is undergoing little change; the north plume area
midway between the apparent source area, W-17, and the dowO:gradient
extent of the plume may be the exception.
• Primary evidence of the biodegradation component of natural ~ttenuation,
the presence of daughter products, and a relatively stable plume remain
unchanged from previous sampling events.
• The secondary evidence or bioparameter data remains about the same and
is generally supportive of the occurrence of reductive dechloriniltion.
• Changes in ranking point totals reflect modifications to the protocol, small
differences in analytical results between sampling events, small <;hanges in
detection limits, and a few suspect analyses.
• Results from subsequent sampling events should continue to be evaluated
to identify trends that may develop. To date, trends have been &fficult to
identify because of the relatively small data set for some monito~g wells
(six to eight sets of groundwater data are typically required to establish a
trend). Also, trends have been difficult to identify because small changes in
some parameters are difficult to distinguish from normal variability in the
\\BCNSH03\PROJECTSIPROJ\603 l 3.0 I S\1032400. doc
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Mr. Roger Towe
June 14, 2000
Page 8
data, particularly for VOC data when the concentrations are low
(i.e., approaching the detection limit). '
Please call either of us at [phone] if you have any questions or comments
regarding this letter report.
Sincerely,
BROWN AND CALDWELL
(flvtLE-i-t-/i, ';ic--£.L-6;
Robert D. Norris, Ph.D.
Technical Director
In-Situ Remediation
cc: K. Mallary, EPA Region 4
N. Testerman, NCDENR
S. Miller, El Paso
J. Porter, The Porter Law Group
N. Prince, ESC
\\BCNSH0J\pROJECTS\PROJ\6031 J.O l 5\I0J 2400 doc
/ /' ,,,., .. ,' /1,,; I/ · W~-k 6vr~
Kenton H. Oma, P.E. ,
Assistant Technical Director
Design & Solid Waste
H. Mitchell, Jr., Beaunit
J. Wright, Burlington
B. Wicker, Burlington
G. House, BPMH&L
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Table 1. Monitoring Wells Selected for Semiannual Groundwater Sampling,
FCX-Statesville Superfund Site OU3
Groundwater Zone
Shallow:
Intermediate:
Deep:
Monitoring Well"
W-5s
W-12s•·c
W-17s'
W-1as•
W-19s
W-20s
W-22s'
W-24s
W-31s
W-5i
W-10ib
W-12ib
W-20i
W-22i
W-28i
W-29i
W-30i
W-31i
W-32i
W-20d
"The analytical methods for the analyses of groundwater samples are given in Table 2.
•Natural attenuation background well.
°Well was not sampled because of low water level or dryness. . . . ·
"Bailer was used to purge well. Well was sampled for a limited list of parameters due to low
water level.
P:\P ROJ\60313.015\dec•99.t01. doc Page 1 of 1
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FIGURE 1
MONITORING WELL
LOCATION MAP
FCX-STATES VILLE SUPERFUND SITE
60313.01 5 STATESVILLE, NORTH CAROLINA ou
3
BROWN AND
CALDWELL
10/99
Nu.hvilll!!, Tl!!:nnesaee
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1. Maximum ob served PCE on lsoconce t concentratl sornpling th n ration map. PCE d (°"' are used rough January 1999. a a are from .
FIGURE 2
ISOCONCE PCE IN SHANLli~ION MAP FOR . GROUNDWATER
FCX-STATESVl STA UE SUPERFUN0
60313.0
15
TESVILLE, NORTH CARO~J.. OU3
10/99
Nashville Te • nnet111ee
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Legend
~ Shallow Monitoring Well Location
"$-Intermediate t.Aonitoring Well Location
♦ Deep Monitoring Well Location ·
-10-Groundwater lsoconcenlrotion Contour
[ X]
( X)
1::12.k;_
PCE Results In (ppb] from Pre-Design
Investigation (POI}
PCE Results In (ppb) from Remedial
Investigation (RI}
1. Maximum observed PCE concentrations ore used
on isoconcentratlon mop. PCE data ore from
sampling through January 1999.
FIGURE 3
ISOCONCENTRATION MAP F'OR
PCE IN INTERMEDIATE GROUNDWATER
FCX-STATESVILLE SUPERFUND SITE, OU3
STATESVILLE, NORTH CAROLINA
60313.015 10/99
BROWN AND
CALDWELL Naahvllle, Tenne,see
-------------------Table 2. Summary of Chemical Analyses and Analytical Method References for Semiannual Groundwater Sampling,
FCX-Statesville Superfund Site OU3
Sample Evaluation Chemical TesUAnalyte Parameter Analytical Reference Methoda DQO Levelb
Field Measurements:
Laboratory Analyses:
Carbon dioxide
Iron (II)
Manganese (II)
Sulfide
Conductivity
Oxidation-reduction potential (ORP)
pH
Dissolved oxygen (DO)
Temperature
Chloride
Iron (total)
Manganese (total)
Aluminum (total) ·
Nitrate/nitrite
Sulfate
Ethane, ethene, and methanee
TCL voes
Alkalinity (carbonate/bicarbonate)f
Dissolved total organic carbon (TOC)
Volatile fatty acids
Hach Kitc
Hach Kitc
Hach Kitc
Hach KitC
ASTM Method D-1125-82
ASTM Method D-1498-76
ASTM Method D-1293-84
CHEMETRICS Ki!C
NAd
USEPA Method 325.2
Aquaterra QAPP Table 3
Aquaterra QAPP Table 3
Aquaterra QAPP Table 3
USEPA Method 353.2
USEPA Method 375.4/9038
USEPA Method 8015-Modified
Aquaterra QAPP Table 2
Standard Methods 2320B
USEPA Method 415.1
Standard Methods 5560C
111
IV
IV
IV
111
Ill
Ill
IV
Ill
111
Ill
asample preservatives, when required by the method, will be added to sample containers at the analytical laboratory prior to sampling. Contract
Required Detection Limits (CRDLs) will be according to the contract laboratory procedure (CLP) methods referenced in the Aquaterra QAPP
Tables 2 and 3. ·
bDQOs (Data Quality Objectives) and QA/QC frequencies per "Environmental Investigations Standard Operating Procedures and Quality
Assurance Manual", May 1996, USEPA Region 4. Level I= Field Screening; Level II= Field Analyses; Level Ill= Screening Data with Definitive
Confirmation; Level IV = Definitive Data.
CMethod_will be per manufacture's. procedures.-
dNot Applicable. .
eAnalysis will be subcontracted to Microseeps Incorporated, Pittsburgh, Pennsylvania.
fsamples to be collected in zero headspace containers to prevent exchange of carbon dioxide between the samples and the atmosphere.
\\BCNSHD3\P ROJ ECTS\PROJ\6031 3.015\dec-99-t02.doc Page 1 of 1
----,_ -------.. - - - ---Table 3. Data from Monitoring Wells Used for Evaluation of Monitored Natural Attenuation 617100
FCX-Statesvllle Superfund Site OU3
Well Information Volatile Organic Compounds
e ClS· , •
Monitoring Screened Sampling Tetrachloro-Trichloro-Dichiaro-Carbon Chloro-1,1-0ichloro-
Well Zone WellType Depth Date ethene ethene ethene Vinyl chloride Acetone Benzene disulfide Chlorofonn methane ethane
(fl) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L)
W-1s Side Gradient Shallow 38-48 12119/98 140DJ 0.7DJ 1.0U 5.0UD NR' 5.0UD 5.0UD 1.0JD 5.0 U 5.0 UD
W-Ss South Plume Shallow 32-42 4/1/94 200 38J 1,000 sou 530 U 50 U sou sou sou 430
W-5s South Plume Shallow 32-42 10/1/94 190 38 J 1,000 sou 250 U 50 U sou sou sou 380
W-5s South Plume Shallow 32-42 4/30/98 200DJ 55 J 1,300 DJ B.2J 61 UJ 2.9J 5.0UJ 2.2J 5.0UJ 340DJ
W-5s South Plume Shanow 32-42 12117/98 200UJ 53J 1,600 J 50 J NR 200UJ 200 UJ 200UJ 200 UJ 270J
W-Ssa South Plume ShaUow 32-42 6/9/99 190 D 57 JD 1100D 100 UD SOOUJ 100UD 100UD 100 uo 100 uo 2400
W-5s South Plume Shallow 32-42 1217/99 220 D 75JD 1,100 D 100 UD 500UD 100UD 100 uo 100 uo 100 UD 280 D
W-5s Dup South Plume Shallow 32-42 12117/99 200 D 670 1,600 D 260J NR 4JD 50 UD 50UD 50UD 290 0
W-5i South Plume Intermediate 56-,;6 10/1/94 25 2.0J 11 10U 50 U 10U 10U 2.0J 10U SJ
W-Si South Plume Intermediate 56-,;6 515/98 49 0 4.90J 40J 5.0UD 25 UD 5.0UO 5.0UD 5.0UO 5.0UO 3.3 DJ
W-5i South Plume Intermediate 56-66 12119/98 28 D 4 10 J 0.3J NR 1.0U 1.0U 0.06J 1.0UJ SJ
W-5i South Plume Intermediate 56-66 6/8/99 480 4.6 D 6.90 2.0UD 10UJ 2.0UO 1.0 JD 2.0UD 2.0UO 4.5 0
W-5i South Plume Intermediate 56-66 1218/99 55D 6.5D 9.9 D 5.0 UD 25UD 5.0 uo 5.0UD 5.0 UD 5.0 UD 8.1 D
W-6s Side Gradient Shanow 22-37 4/30/98
W-6s Cup Side Gradient Shallow 22-37 4/30/98 -
W-8i Side Gradient lntenned~te 83-93 12116/98 75J 4 3 0.09J 44 J O.OBJ 0.5J 1.0U 0.2J
W-9s Treatment Shallow 34-49 5/5/98 3,100 0 14 D 1.9DJ 10 UD 50UO 10 uo 10 uo 2.1 OJ 10UO 10UO
W-9s Dup Treatment Shallow 34-49 515/98 3,200 D 130 2 DJ 10UO 50UD 10UD 10 uo 2.20J 10UO 10UD
W-9s Treatment Shallow 34-49 12117/98 6,000 D 24 OJ 200UO 200UO NR · 200 uo 200UD 200UO 200 U 200 UD
W-10i Side Gradient Intermediate 59-69 10/1/94 1.0U 1.0U 1.0U 1.0U 11.0U 1.0U 1.0U 1.0U 1.0 U 1.0U
W-101 Side Gradient lntennediate 59-69 1/1/95 0.9 J 0.2 J 1.0U 1.0U 6.0U 1.0U 1.0U 1.0U 1.0 U 1.0 U
W-10i Side Gradient Intermediate 59-69 1211/95 0.9 J 2 0.2 J 1.0U BU 1.0U 1 0.2 J 0.2 J 1.0U
W-10i Side Gradient Intermediate 59-69 4/30/98 0.66J 1.0U 1.0U 1.0U 5.0U 1.0U 1.0 U 1.0U 1.0U 1.0 U
W-10i Side Gradient lntennediate 59-69 12119/98 2 1.0 U 1.0 UJ 1.0U NR f.OUJ 1.0U 1.0 U 1.0U 1.0 U
W-10i Side Gradient Intermediate 59-69 6/8/99 1.8 1.0 U 1.0U 1.0U 5.0 U 1.0 U -240 1.0U -1.0 U 1.0 U
. W•10i-Side Gradient Intermediate -59-69 1219/99 1.1 1.0U 1.0 U 1.0 U 5.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0U
W-11s Side Gradient Shallow 25-40 4/30/98
W-12s Background Shallow 18-33 10/1/94 1.0U 1.0 U 1.0U 1.0U 5.0U 1.0 U 1.0U 1.0U 1.0U 1.0 U
W-12s Background Shallow 18-33 1/1/95 1.0U 1.0 U 1.0U 1.0U 5.0U 1.0U 1.0U 0.1 J 1.0U 1.0 U
W-12s Background Shallow 18-33 4/30/98 1.0 U 1.0U 1.0U 1.0U 5.0 U 1.0U 1.0 U 1.0 U 1.0U 1.0U
W-12sd Background Shallow 18-33 1218/99
P:\Proj\60313.015\dee-99-103.xls Page 1 of 21
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M - - --· -- - --= -----iii)
Table 3. Data from Monitoring Wells Used for Evaluation of Monitored Natural Attenuation 6f7/00
FCX-Statesville Superfund Site OU3
Well Information Volatile Organic Compounds
e CIS-' -
Monitoring Screened Sampling Tetrachloro-Trichloro-Didlloro-Carbon Chiaro-1, 1-Dichloro-
WeU Zone Well Type Oeplh Date ethene ethane ethene Vinyl chloride Acetone Benzene d~ulfide Chloroform methane ethane
(ft) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L)
W-12i Background lntennediate 73-83 10/1/94 3.0 1.0 U 1.0U 1.0 U 5.0 U 1.0U 1.0 U 1.0 U 1.0U 0.3 J
W-12i Background Intermediate 73,a3 1/1/95 2.0 1.0 0.1 J 1.0 U 6.0U 1.0U 4.0 0.1 J 1.0U 0.4 J
W-12i Background Intermediate 73,a3 4/30/98 1.5 1.0U 1.0U 1.0U 310 OJ 1.0U 0.39J 0.14 J 1.0 U 1.0 U
W-12i Background Intermediate 73,a3 12/16/98 2J 1.0 U 1.0U 1.0 U NR 0.04J 0.05J 0.3J 1.0U 0.5J
W-12i Background Intermediate 73-83 6(//99 2.5 1.0U 1.0U 1.0U 5.0U 1.0U 1.0U 0.35J 1.0U 0.50 J
W-12i Background lntennediate 73-83 12/9/99 22 1.0 U 1.0 U 1.0 U 5.0 U 1.0 U I.OU 1.0 U 1.0 U 0.59J
W-16s Treatment Shallow 35.50 5/5/98
W-16s Treatment Shallow 35-50 12/17/98 2,300 D 40DJ 200 UD 200UD NR 200UO 200UO 25 OJ 200UO 200UO
W-16i Treatment Intermediate 77.a7 5/5/98
W-16i Treatment lntefTT!ediate 77,a7 12/17/98 1,000 D 260 180 2.0 UD NR 2.0 UD 2.0UD 400 2.0U 2.0 UD
W-17s Source Shallow 29.5-44.5 10/1/94 42,000 4,000 U' 430 J 4,000 U 20,000 U 4,000 U 4,000 U 4,000 U 4,000 U 4,000 U
W-17s Source Shallow 29.5-44.5 1/1/95 57,000 480 J 880 J 4,000 U 20,000 U 4,000 U 4,000 U 4,000 U 4,000 U 4,000 U
W-17s Source ShaUow 29.5-44.5 5/5/98 84,000 D 4100 7200 250UD 1,200 UD 250UD 250UD 110 OJ 250UD 250 UD
W-17s Source Shallow 29.5-44.5 12/18/98 72,000 D 10,000 UD 10,000 UD 10,000 UD NR 10,000 UD 10,000 UD 10,000 UD 10,000 UD 10,000 UD
W-17sd Source Shallow 29.5-44.5 12/9/99 110,000 D 5,000 UD 510JD 5,000 UD 25,000 UD 5,000 UD 5,000 UD 5,000 UD 5,000 UD 5,000 UD
W-18s Background ShaUow 22.5-37.5 12/1/95 6 6 0.8 J 1.0U 5U 1.0U 1.0U 0.6J 1.0U 1.0U
W-18s Background Shallow 22.5-37.5 4/30/98 3.5 1.0U 1.0 U 1.0 U 6.0 U 1.0 U 1.0U 1.0 U 1.0U 1.0 U
W-18s Background Shallow 22.5-37.5 12/16/98 4J 1.0U 1.0 U 1.0U NR 1.0U 1.0 U 1.0U 1.0U 1.0 U
W-18s Background Shallow 22.5-37.5 6/8/99 3.8 1.0U 1.0 U 1.0U 5.0U 1.0 U 1.0U 1.0U 1.0 U 1.0U
W-18s Background Shallow 22.5-37.5 12/6/99 1.7 I.OU 1.0 U 1.0 U 5.0 U 1.0U 1.0 U 1.0U 1.0U 1.0 U
W-19s North Plume Shallow 17-27 12/1/95 26 4 1 J 2.0U 10U 2.0 U 0.4 J 0.3J 2.0U 2.0U
W-19s North Plume Shallow 17-27 5/5/98 260 1.2 DJ 0.82 DJ 2.5 UD 12UD 2.5 UD 2.5UD 0.56 DJ 2.5UD 2.5 UD
W-19s North Plume Shallow 17-27 12/17/98 250J 5 4.0U 1.0 U NR 1.0 U 1.0U 1.0J 1.0U 1.0U
W-19s North Plume Shallow 17-27 6110/99 330 D 7.4 JD 10 UD 20UD NR 20UD 20 UD 20UD 20UD 20UD
W-19s North Plume Shallow 17-27 12/7/99 420 D 11 JD 22 D · 20 UD 100 UD 20 UD 20 UD 20 UD 20 UD 20 UD
. W-20s North Plume Shallow 4-14 12/1/95 3 0.5 J 0.8 J 1.0 U 7U 1.0U 1.0 U 0.2J 1.0U 1U
W-20s North Plume Shallow 4-14 4/29/98 20 0.89J. 3.4 1.0U 5.0U 1.0U 1.0U 0.23J 1.0U 1.0U
W-20s Dup North Plume Shallow 4-14 4/29/98 17 0.8J 3.1 1.0 U 5.0U 1.0U 1.0U 0.21 J 1.0 U 1.0 U
W-20s North Plume Shallow 4-14 12/20/98 27DJ 1 4J 1.0 U NR 1.0U 1.0 U 0.2J 1.0U 1.0 U
W-20s North Plume Shallow 4-14 6/8/99 48D 1.9 JD 5.1 D 2.0UD 10UD 2.0 UD 2.0 uo 2.0UD 2.0 UD 2.0UD
W-20s North Plume Shallow 4-14 12/7/99 40D 2.9 D 8.4 D 2.0 UD 10 UD 2.0 UD 2.0 UD 2.0 UD 2.0 UD 2.0UD
W-20s Dup North Plume Shallow 4-14 12/7/99 42D 3.1 D 8.3 D 2.0 UD 10 UD 2.0UD 2.0 UD 2.0 UD 2.0UD 2.0 UD
P:\Proj\60313.015\dec-99--t03 .xfs Page 2 of 21
-- -- --1!!!!!!11 -II!!!! 11!!!1 ---=t == a=;, &ii! at tiliim
Table 3. Data from Monitoring Wells Used for Evaluation of Monitored Natural Attenuation 6f7/00
FCX-Statesville Superfund Site OU3
Well lnfonnation Volatile Organic Compounds
e CIS-'.
Monitoring Screened Sampling T etrachloro-Trichloro-Dichiaro-Carbon Chiaro-1, 1-Dichloro-
Well Zone WeUType Depth Date ethene ethene ethene Vinyl chloride Acetone Benzene disulfide Chloroform methane ethane
(ft) (µgA.) (µg/1.) (µg/1.) (µgA.) (µg/1.) (µgA.) (µg/1.) (µg/1.) (µg/1.) (µg/1.)
W-20I North Plume Intermediate 84-94 3/1196 240 13 J 29 20U 100U 20 U 20 U 20U 20U 20 U
W-20i North Plume Intermediate 84-94 4/29198 310DJ 18 JD 25 J 2.0UJ 10UJ 2.0 UJ 0.48J 0.77 J 2.0UJ 2.0 UJ
W-20i North Plume Intermediate 84-94 12/15/98 1,100D 75 D 120D 50UD NR 50UD 14 DJ 5JD 50UD 50UD
W-20i North Plume lntennediate 84-94 1/26199 450 D 34 D 29 D 1.0U 5.0 U 0.08J 1.0U 1.0U 0.3J
W-20i North Plume Intermediate 84-94 1/27/99 380 D 29 D 24 D 20UD 100 UD 20UD 20UD 20UD 20 U 20UD
W-20i North Plume lntennedlate 84-94 6/8/99 440 D 30JD 23JD 50UD 250UD 50UD 50UD 50UD 50UD 50UD
W-20i North Plume Intermediate 84-94 12/7/99 270 D 25JD 19JD 50UD 250 UD 50UD 50 UD 50 UD 50 UD 50UD
W-2otf North Plume Deep 152-166 9/23/98 34D 4.9 9.4 1.0 U 22 1.0 U 1.0U 0.50 U 1.0U 1.0 U
W-20d North Plume Deep 152-166 12/17/98 12 J 2 0.02J 1.0 U 12 J 0.07 J 1.0U 1.0 U 1.0U 1.0 U
W-20d North Plume Deep 152-166 6/9/99 4.3 2.0 1.2 1.0 U 8.4 1.0U 1.0U 1.0 U 1.0U 1.0U
W-20d North Plume Deep 152-166 12/9/99 5.8 3.1 1.6 1.0 U 13 1.0U 1.0 U 1.0U 1.0 U 1.0U
W-22s South Plume Shallow 20-35 12/1/95 4 3 1 J 0.3 J 6U 1.0U 1.0U 0.3J 1.0 U 0.7 J
W-22s South Plume Shallow 20-35 5/1/98 3.6 0.12J 2.5 0.45J 5.0 U 1.0 U 1.0U 1.0 U 1.0U 1.1
W-22s South Plume Shallow 20-35 12/20/98 4 1.0 U 2J 0.4J NR 1.0U 1.0U 1.0U 0.1 J 0.6J
W-22sd South Plume Shallow 20-35 12/8/99 11 0.20J 3.1 0.43J 5.0 U 1.0 U 1.0 U 1.0U 1.0 U 1.0
W-22i South Plume Intermediate 57-67 3/1/96 170 16 90 10U 50U 10U 10 U 10U 10U 47
W-22i South Plume lntennedlate 57-67 5/1/98 150 D 11 100D 2.1 5.0 U 0.28J 1.0U 0.54J 1.0U 46D
W-22i South Plume Intermediate 57-67 12/20198 110 J 10D 140J 3DJ NR 10U· 10 UD 0.8J 10UJ 58J
W-22i South Plume Intermediate 57-67 6/9/99 860 11D 96 D 10UD NR 10UD 10 UD 10UD 10 UD 46 D
W-22I Sou1h Plume Intermediate 57-67 12/8/99 65D 8.5JD 77 D 10 UD 50 UD 10UD 10 UD 10 UD 10 UD 40 D
W-22i Dup South Plume Intermediate 57-67 12/8/99 63D 8.2JD 73 D 1.4JD 50 UD 10UD 10 UD 10 UD 10 UD 38D
W-24s South Plume Shallow 5-20 12/1195 1 2 0.3J 1.0 U 7U 1.0U 1.0U 0.2 J 1.0U 0.3J
W-24s South Plume Shallow 5-20 5/1198 0.35J 1.0U 1.0U 1.0 U 5.0U 1.0U 1.0 U 1.0U 1.0 U 1.0U
W-24s Oup South Plume Shallow 5-20 1/27199 1.0 U 1.0U 1.0U 1.0 U · 5.0U 1.0U 1.0U 0.06J 1.0 U 0.2 J
W-24s South Plume Shallow 5-20 1/27/99 1.0 U 1.0U 1.0 U 1.0 U 5.0U J,OU 1.0.U 0.1 J _ 1.0 U. 0.2J
W-24s .South Plume Shallow -5-20 6/9/99" -0.50J ·1.ou 1.0 u 1.0U 5.0U 1.0 U 1.0U 1.0U 1.0 U 1.0 U
W-24s South Plume Shallow 5-20 12/8/99 1.9 1.0 U 0.25J 1.0 U 5.0U 1.0 U 1.0 U 1.0U 1.0 U 0.30J
W-261 Side Gradient Intermediate 103-118 12/16198 0.3J 0.09J 0.03J 0.2J 3J 0.1 J 0.4 J 1.0 U 1.0U 1.0U
W-28i North Plume Intermediate 73-88 12/1195 230 32 12 10 U 50U 10U 10U 4J 10U 10 U
W-28i North Plume Intermediate 73-88 5/5198 1700 42 D 160 10UD 50 UD 10UD 10UD 10UD 10UD 10UD
W-28i North Plume Intermediate 73-88 12/18198 6400 24 D 9.00J 10UD NR 10UD 10UD 2JD 100U 10UD
W-28i North Plume Intermediate 73-68 6/8199 2500 40JD 15 JD 50 UD 250 uo 50UD 50UD 50 UD 50 UD 50UD
W-28i North Plume Intermediate 73-88 12/7/99 310 D 43 D 14JD 50 UD 250 UD 50 uo 50 UD 50 UD 50 UD 50 UD
P:\Proj\60313.015\dec-99-l03.xls Page 3 of 21
---- --- -- - ---- - ----Table 3. Data from Monitoring Wells Used for Evaluation of Monitored Natural Attenuation 6/7100
FCX-Statesville Superfund Site OU3
Well Information Volatile Organic Compounds
e CIS-' .
Monitoring Saeene<I Sampling T etrachloro-Trichloro-Dichloro-Carbon Chloro-1,1-Dichloro-
Well Zone Well Type Depth Date ethene ethene ethene Vin~ chloride Acetone Benzene disulfide Chlorofonn methane ethane
(ft) (µg/L) (µgll) (µgll) (µgll) (µg/L) (µgll) (µgll) (µgll) (µg/L) (µgll)
W-29i South Plume Intermediate 88-98 1211195 15 0.8 J 3 1.0U 5.0U 1.0U 1.0U O.BJ 1.0U 2
W-29i South Plume Intermediate 88-98 5/1198 42 D 1.4 DJ BD 2.5 UD 12 UD 2.5 UD 2.5UD 1.1 DJ 2.5UD 5.4 D
W-29i Dup South Plume Intermediate 88-98 12120198 34 DJ 2DJ 7 DJ 0.2DJ NR 2.0 UD 2.0UD 1DJ 2.0 UDJ · 5DJ
W-29i South Plume lntenne<liate 88-98 12/20198 32 J 2JD ?DJ 0.2DJ NR 2.0UD 2.0UD 1 J 2.0UJ 4J
W-29i South Plume lntenne<llate 88-98 619199 50 D 5.0D 7.9D 2.0UD NR 2.0UD 2.0UD 0.92 JD 2.0UD 4.7 D
W-29i Dup South Plume Intermediate 88-98 619199 49 D 5.3 D 7.8 D 2.0UD NR 2.0 UD 2.0UD 0.83 JD 2.0UD 4.5 D
W-29i South Plume Intermediate 88-98 12/9/99 52 D 2.7 JD 8.1 D 5.0 UD 25UD 5.0 UD 5.0UD 5.0 UD 5.0UD 6.3 D
W-29iDup South Plume Intermediate 88-98 12/9/99 50 D 2.6 JD 7.8 D 5.0 UD 25UD 5.0 UD 5.0UD 5.0 UD 5.0UD 6.3 D
W-30i North Plume tntermedi~te 37.5-47.5 1211195 530 2BJ 28 J 50 U 250 U 50 U sou SJ sou sou
W-30i North Plume Intermediate 37.5-47.5 4130/98 SOOD 34 D 20 D 2.5 UD 20 UD 2.5 UD 2.5UD 2.5UD 1.2 DJ 2.5 UD
W-30i North Plume lntenned,ite 37.5-47.5 12119198 560 DJ 46D 28JD 20 UD NR 20UD 20UD 20 UD 20U 20UD
W-30i North Plume Intermediate 37.5-47.5 1/26/99 1,100D 82D 43JD 0.2J 5.0 U 0.2J 1.0U 0.4J 1.0U 0.2J
W-30i North Plume Intermediate 37.5-47.5 1127199 1,100D 85D 42JD 50 UD 250UD SOLID 50 UD 50UD 50 UD 50UD
W-30i North Plume Intermediate 37.5-47.5 619199 1,100D 71 D 34JD 50 UD NR SOLID 50 UD 50UD 50 UD SOLID
W-30i North Plume lntennediate 37.5-47.5 12/8/99 1,200 D 71 JD 33JD 100 UD 500 UD 100 UD 100UD 100 UD 100 UD 100 UD
W-31s North Plume Shallow 5-15 11/1198 1.0U 1.0U 1.0U 1.0U 5.0U 1.0U 1.0 U 0.25J 1.0 U 1.0U
W-31s North Plume Shallow 5-15 11/19198 1.0U · 1.0U 1.0U 1.0 U 5.0U 1.0U 1.0 U 0.25J 1.0 U 1.0U
W-31s Dup North Plume Shallow 5-15 11/19198 1.0 U 1.0U 0.06J 1.0 U 5.0U 1.0 U 1.0U 0.29J 1.0U 1.0 U
W-31s North Plume Shallow 5-15 12116198 1.0 U 1.0U 0.04J 1.0U NR · 1.0U 1.0U 0.05J 1.0U 1.0 U
W-31sc North Plume Shallow 5-15 6/1199 1.0U 1.0 U 1.0 U 1.0U 5.0U 1.0 U 1.0U 1.0U 1.0U 1.0 U
W-31sc North Plume Shallow 5-15 6/10/99 0.26 J 1.0 U 1.0 U 1.0U NR 1.0 U 1.0U 1.0 U 1.0U 1.0U
W-31s North Plume Shallow 5-15 1216/99 1:0 U 1.0 U 1.0 U 1.0 U 5.0U 1.0 U 1.0U 1.0 U 1.0U 1.0U
W-31s Dup North Plume Shallow 5-15 12116/99 · 1.0U 1.0 U 0.06J 1.0 U NR 1.0 U 1.0 U 0.04 U 1.0U 1.0 U
W-31i North Plume Intermediate 34-44 11/1/98 1.0U 1.0U 1.0U 1.0 U 5.0 U 1.0U 1.0 U 1.0 U 1.0 U 1.0U
W-31i North Plume Intermediate 34-44 11/19198 1.0U 1.0 U 1.0U 1.0 U 5.0 U 1.0U 1.0 U 1.0 U 1.0 U 1.0U
W-31i North Plume Intermediate 34-44 12116198 0.1 J 1.0 U 1.0 U 1.0U NR 1.0 U 1.0 U 0.09J 1.0U 1.0U
W-31i North Plume Intermediate 34-44 6/1199 1.0U 1.0U 1.0 U 1.0U 5.0U 1.0U 1.2 1.0U 1.0U 1.0U
W-31i North Plume lntennediate 34-44 12/6/99 1.0 U 1.ou 1.0 U 1.0U 5.0U -1.0U 1.0 U 1.0 U ·1.0 U ·1.0 U
W-32i South Plume Intermediate 112-132 11/1198 0.26J 0.11 J 1.0 U 1.0U 5.0U 1.0U 1.0U 0.14 J 1.0U 1.0U
W-32i South Plume Intermediate 112-132 11/19198 0.26J 0.11 J 1.0U 1.0U 5.0U 1.0 U 1.0U 0.14 J 1.0U 1.0U
W-32i South Plume Intermediate 112-132 12118/98 0.4 J 0.2 J 1.0UJ -1.0U NR 1.0U 1.0U 1.0 U 1.0 U 1.0 U
W-32i South Plume Intermediate 112-132 619/99 0.63 J 0.22 J 1.0U 1.0 U 5.0U 1.0U 1.0U 1.0 U 1.0 U 1.0 U
W-32i South Plume lntennedlate 112-132 12/7/99 0.95J 0.28J 1.0 U 1.0 U 5.0U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U
P:\ProJ180313.015\dec-99-103.xls Page 4 of 21
-----------,_ --11111 ---liiiil
Table 3. Data from Monitoring Wells Used for Evaluation of Monitored Natural Attenuation smoo
FCX-Statesville Superfund Site OU3
Well Information Volatile Organic Compounds
e
Monitoring Screened Sampling 1,2-0ichloro-1.1-Dichloro-1,2-0ichloro-Methylene 4-Methyl-2-Trichloro-Trichloro-
Well Zone Well Type Depth Date ethane ethene elhene propane dlloride pentanone Toluene ethane ethane
(ft) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L)
W-1s Side Gradient Shallow 38-48 12/19198 5.0UD 20U 1.0 U 5.0 UD 10U 25UD 5.0UD 5.0UD 5.0UD
W-5s South Plume Shallow 32-42 4/1194 sou 81 50 U 50 U 50 U 250U sou 150 13J
W-Ss South Plume Shallow 32-42 10/1/94 sou 73 sou sou 32 J 250U sou 140 11 J
W-5s South Pluine Shallow 32-42 4/30198 3.8J 83 J 3.1 J 2.4 J 3.4 J 25 UJ 5.0UJ 140 DJ 13 J
W-5s South Plume Shallow 32-42 12/17/98 200 UJ 76J 200UJ 200UJ 400 UJ 1,000 UJ 200UJ 85J 200UJ
W-5s1 South Plume Shallow 32-42 6/9/99 100 UD 72JD 100UD 100UD 200 UD SOOUD 100 UD 94JD 100 UD
W-5s South Plume Shallow 32-42 12/7199 100 UD 73JD 100 UD 100 UD 200 UD 500 UD 100 UD 130 D 100 UD
W-5s Dup South Plume Shallow 32-42 12/17/99 50 UD 100 D 50 UD 50 UD 100 UD 250 UD 50 UD 110 D 10JD
W-Si South Plume Intermediate 56-86 1011/94 10U 3J 10U 10U 4J sou 10U 2J 10U
W-5i South Plume Intermediate 56-£6 5/5/98 5.0UD 3.6 DJ 5.0UD 5.0UD 10UD 25 UD 5.0UD 5.0 UD 5.0UD
W-51 South Plume Intermediate . 56-86 12/19198 1.0 U 4 1.0 U 1.0U 2.0UJ 5.0U 0.40J 1.0U 1.0U
W-Si South Plume Intermediate 56-£6 6/8/99 2.0UD 4.6D 2.0UD 2.0UD 4.0UD 10 UD 2.0UD 2.0UD 2.0UD
W-5I South Plume Intermediate 56-£6 12/B/99 5.0 UD 7.2D 5.0UD 5.0 UD 10 UD 25UD 5.0UD 5.0 UD 5.0UD
W-8s Side Gradient Shallow 22-37 4/30/98
W-8s Dup Side Gradient Shallow 22-37 4/30/98
W-Bi Side Gradient Intermediate 83-93 12/16/98 1.0 U 0.07 J 0.1 J 5 2.0 U 5.0 U 0.9JB 1.0U 1.0 U
W-9s Treatment Shallow 34-49 5/5198 10UD 10UD 10UD 10 UD 20 UD 50UD 10UD 10 UD 10 UD
W-9s Dup Treatment Shallow 34-49 5/5198 10UD 10UD 10 UD 10UD 20 UD 50UD 10UD 10UD 10UD
W-9s Treatment Shallow 34-49 12/17/98 200UD 200UD 200UD 200 UD 400U 1,000 UD 200UD 200 UD 200UD
W-10i Slde Gradient Intermediate 59-89 10/1/94 1.0 U 1.0U 1.0U 1.0 U 2.0U 5.0U 1.0 U 1.0U · 1.0 U
W-10i Side Gradient Intermediate 59-89 1/1/95 1.0U 1.0 U 1.0 U 1.0 U 2.0 U 5.0U 1.0U 1.0U 1.0 U
W-10i Side Gradient Intermediate 59-89 12/1/95 1.0 U 1.0U 1.0 U 1.0 U 2.0U 5.0U 0.1 J 1.0U 1.0U
W-10i Side Gradient Intermediate 59-89 4/30/98 1.0 U 1.0U 1.0U 1.0 U 4.1 5.0U 1.0U 1.0U 1.0 U
W-10i Side Gradient Intermediate 59-89 12/19198 1.0 U 1.0U 1.0 U 1.0U 2.0UJ 5.0UJ 1.0 UJ 1.0U 1.0U
W-10i Side Gradient Intermediate 59-89 618199 1.0 U 1.0U 1.0U 1.0U 2.0U 5.0U 1.0U 1.0U 1.0 U
W-10i Side Gradient Intermediate 59-89 12/9/99 1.0 U 1.0 U 1.0U 1.0 U 2.0 U 5.0 U 1.0U 1.0 U 1.0 U
W-11s Side Gradient Shallow 25-40 4/30/98
W-12s Background Shallow 18-33 10/1/94 1.0U 1.0 U 1.0U 1.0 U 1.0U 5.0U 1.0 U 1.0U 1.0 U
W-12s Background Shallow 18-33 1/1/95 1.0U 1.0 U 1.0 U 1.0 U 2.0 U 5.0 U 1.0U 1.0U 1.0U
W-12s Background Shallow 18-33 4/30/98 1.0U 1.0U 1.0 U 1.0 U 0.61 J 5.0 U 1.0 U 1.0 U 1.0U
W-12s' Background Shallow 18-33 12/8/99
P:\Proj\60313.01 5\dec-99-t03.xls Page 5 of 21
--------liiiiil ----------
Table 3. Data from Monitoring Wells Used for Evaluation of Monitored Natural Attenuation 6f7/00
FCX-Statesvilie Superfund Site OU3
Well Information Volatile Organic Compounds
e ns-, -
Monitoring Screened SampUng 1,2-0ichloro-1, 1-0ichloro-Dichloro-. 1,2-0ichloro-Methylene 4-Methy~2-Trichloro-Trichloro-Well Zone Well Type Depth Date ethane ethene ethene propane chloride pentanone Toluene ethane ethane
(ft) (µgll) (µg/L) (µg/L) (µgll) (µg/L) (µg/L) (µg/L) (µg/L) (µgll)
W-121 Background lntennediate 73-83 10/1/94 1.0U 1.0U 1.0U 1.0 U 1.0U 5.0U 1.0U 1.0 U 1.0U W-121 Background Intermediate 73-83 111/95 1.0U 0.1 J 1.0 U 1.0U 2.0U 5.0 U 1.0U 1.0U 1.0 U W-12i Background Intermediate 73-83 4/30/98 1.0 U 1.0 U 1.0U 1.0U 2.0 U 1.1 J 0.24J 1.0U 1.0U W-121 Background Intermediate 73-83 12116/98 1.0U 0.2J 1.0U 1.0U 2.0U 5.0 U 1.0 U 1.0 U 1.0U W-121 Background lntennediate 73-83 6ll/99° 1.0 U 1.0U 1.0U 1.0U 2.0U 5.0 U 1.0 U 1.0 U 1.0 U W-121 Background Intermediate 73-83 12/9/99 1.0U 0.17 J 1.0 U 1.0 U 2.0 U 5.0 U 1.0U 1.0 U 1.0 U
W-16s Treatment Shallow 35-50 515/98
W-16s Treatment Shallow 35-50 12117/98 200UD 200UD 200UD 200UD 400 UD 1,000 UD 200 UD 200UD 200UD
W-16i Treatment lntennediate 77-87 5/5/98
W-161 Treabnent Intermediate 77-87 12117/98 0.9 DJ 0.4 DJ 2.0UD 20D 4.0UJ 10UD 2.0U 2.0UD 2.0UD
W-17s Source Shallow 29.5-44.5 10/1/94 4,000 U 4,000 U 4,000 U 4,000 U 8,000 U 20,000 U 4,000 U 4,000 U 4,000 U W-17s Source Shallow 29.5-44.5 1/1/95 4,000 U 4,000 U 4,000 U 4,000 U 8,000 U· 20,000 U 4,000 U 4,000 U 4,000 U W-17s Source ShaUow 29.5-44.5 5/5198 250UD 250UD 250UD 57DJ 500UD 1,200 UD 250UD 250UD 250UD W-17s Source Shallow 29.5-44.5 12118/98 10,000 UD 10,000 U 10,000 UD 10,000 UD 20,000 UJ 50,000 UJ 10,000 UD 10,000 UD 10,000 UD W-17sd Source Shallow 29.5-44.5 12/9/99 5,000 UD 5,000 UD 5,000 UD 5,000 UD 10,000 UD 25,000 UD 5,000 UD 5,000 UD 5,000 UD
W-18s Background Shallow 22.5-37.5 1211/95 1 U 1.0 U 1.0U 1.0 U 2.0 U 5.0 U 0.1 J 1.0U 1.0 U W-18s Background Shallow 22.5-37.5 4/30/98 1.0U 1.0U 1.0 U 1.0U 3.4 5.0 U 1.0U 1.0 U 1.0U W-18s Background Shallow 22.5-37.5 12116/98 1.0U 1.0U 1.0U 1.0U 2.0U 5.0U 1.0 U 1.0U 1.0U W-18s Background Shallow 22.5-37.5 6/8/99 1.0 U 1.0U 1.0U 1.0U 2.0U 5.0 U 1.0U 1.0 U 1.0 U W-18s Background Shallow 22.5-37.5 12/6/99 1.0 U 1.0U 1.0 U 1.0 U 2.0 U 5.0 U 1.0 U 1.0U 1.0 U
W-19s North Plume Shallow 17-27 1211/95 2.0 U 2.0 U. . 2.0 U 2.0 U 2U 10U 2.0U 2.0U 2.0 U W-19s • North Plume Shallow 17-27 5/5/98 2.5UD 2.5 UD 2.5 UD 2.5UD 5.0 UD 12UD 2.5UD 2.5 UD 2.5 UD W-19s North Plume Shallow 17-27 12117/98 1.0 U 0.3 J 0.05 J 1 2.0U 5.0 U 1.0U 1.0U 1.0U W-19s North Plume Shallow 17-27 6/10/99 20UD 20UD 20 UD 20UD 40 UD 100UD 20UD 20 UD 20 UD W-19s North Plume Shallow 17-27 1217/99 20 UD 20 UD 20 UD 20 UD 40 UD 100UD 20 UD 20 UD 20UD
W-20s North Plume Shallow 4-14 1211/95 1.0U 1.0U 1.0 U 1.0U 2.0 U 5.0 U 1.0 U 1.0 U 1.0 U W-20s North Plume ShaUow 4-14 4/29/98 1.0 U 1.0 U 1.0U 0.28J 2.0U 5.0U 1.0U 1.0 U 1.0 U W-20s Dup North Plume ShaUow 4-14 4/29/98 1.0 U 1.0 U 1.0U 0.26J 2.0U 5.0U 1.0 U 1.0U 1.0U W-20s North Plume Shallow 4-14 12120/98 1.0U 1.0U 1.0 U 0.4 J 2.0UJ 5.0U 1.0U 1 UD 1.0U W-20s North Plume ShaDow 4-14 6/8/99 2.0 UD 2.0UD 2.0UD 0.58 JD 4.0 UD 10UD 2.0UD 2.0UD 2.0 UD W-20s North Plume Shallow 4-14 1217/99 2.0 UD 2.0 UD 2.0 UD 1.3JD 4.0 UD 10 UD 2.0 UD 2.0 UD 2.0 UD W-20s Oup North Plume Shallow 4-14 1217/99 2.0 UD 2.0 UD 2.0 UD 1.2JD 4.0 UD 10 UD 2.0 UD 2.0 UD 2.0 UD
P:\Proj\60313.01 5\dec-99-W3.xls Page 6 of 21
-------- --- --- - - ---Table 3. Data from Monitoring Wells Used for Evaluation of Monitored Natural Attenuation 6f7/00
FCX-Statesvllle Superfund Site OU3
Well Information Volatile Organic Compounds,
e ns-, -
Monitoring Saeened Sampling 1,2-0ichloro-1, 1-0ichloro-Dichiaro-1,2-Dichloro-Methylene 4-Methyl-2-Trichloro-Trichloro-
Well Zone Well Type Depth Date ethane ethene ethene propane chloride pentanone Toluene . ethane ethane
(ft) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L)
W-201 North Plume Intermediate 84-94 3/1/96 20 U 20U 20U 20 U 40 U 100U 20 U 20 U 20U
W-20i North Plume Intermediate 84-94 4/29/98 2.0UJ 0.4 J 2.0UJ 8.6 J 4 UJ 1.4 J 2.0 UJ 2.0UJ 2.0UJ
W-201 North Plume Intermediate 84-94 12115/98 50 UD 50 UD 50 UD 48DJ · 100U 250UD 50 U SOUD SOUD
W-20i North Plume lntennediate 84-94 1/26/99 1.0U 0.6J 0.2J 16 2.0U 5.0U 1.0U. 1.0 U 1.0 U
W-201 North Plume Intermediate 84-94 1/27/99 20 U 20UD 20 UD 15 JD 40 U 100UD 20 UD 20U 20U
W-20i North Plume Intermediate 84-94 6/8199 50 UD 50 UD 50 UD 13JD 100UD 250UD 50 UD 50 UD SOUD
W,20I North Plume Intermediate 84-94 1217/99 50 UD SCUD 50 UD 11 JD 100 UD 250 UD 50 UD 50 UD 50 UD
W-20d' North Plume Deep 152-166 9/23/98 1.0 U 1.0 U 1.0U 2.8 0.58J 5.0U 0.88J 1.0U 12.0U
W-20d North Plume Deep 152-166 12/17/98 1.0U 0.03J 3 2.0 U 0.4J 0.7 J 1.0U 1.0U
W-20d North Plume Deep 152-166 6/9/99 1.0 U 1.0 U 1.0U 0.61 J 2.0 U 5.0 U 0.10J 1.0U 1.0U
W-20d North Plume Deep 152-166 12/9/99 1.0 U 1.0 U 1.0 U 0.95J 2.0 U 5.0U 1.0 U 1.0 U 1.0 U
W-22s South Plume Shallow 20-35 12/1/95 1.0 U 1.0 U 1.0U 1.0 U 2.0 U 5.0 U 1.0U 1.0U 1.0U
W-22s South Plume Shallow 20-35 511/96 1.0 U 1.0U 1.0U 1.0 U 3.7 5.0 U 1.0 U 0.88J 1.0U
W-22s South Plume Shallow 20-35 12/20/98 1.0U 1.0U 1.0U 1.0U 2.0 UJ 5.0UJ 1.0U 0.6J 1.0 U
W-22sd South Plullle Shallow 20-35 12/8/99 1.0 U 1.3 1.0U 1.0 U 2.0 U 5.0 U 1.0 U 0.76J 1.0 U
W-221 South Plume Intermediate 57-67 3/1/96 10U 10U 10U 10 U 20U 50 U 10U 12 10U
W-221 South Plume Intermediate . 57-67 5/1/98 1.0U 20 0.46J 1.0U 2.0 U 5.0U 1.0U 11 0.31 J
W-221 South Plume Intermediate 57-67 12/20/96 10UD 20D 0.4JD 10 UD 20 UJ 50 UD 10UD 12 D 10UD
W-22i South Pluriie Intermediate 57-67 6/9/99 10UD . 11 D 10UD 10UD 20UD 50 UD 10UD 10 UD 10 UD
W-221 South Plume Intermediate 57-67 12/6/99 10 UD 10UD 10 UD 10 UD 20 UD 50 UD 10 UD 5.4JD 10 UD
W-22i Dup South Plume Intermediate 57-67 12/6199 10 UD 7.3JD 10UD 10 UD 20 UD 50 UD 10 UD 5.0JD 10 uo
W-24s South Plume Shallow 5-20 12/1/95 1.0 U 0.2J 1.0 U 1.0 U 1.0 U 5.0U 0.1 J 1.0U 1.0U
W-24s South Plume Shallow 5-20 5/1/98 1.0 U 1.0 U 1.0 U 1.0U 2.0 U 5.0U 1.0U 1.0U 1.0U
W-24s Dup South Plume ShaDow 5-20 1/27/99 1.0U 0.06J 1.0U 1.0U 2.0 U 5.0 U 1.0U 1.0U 1.0U
W-24s South Plume Shallow 5-20 1/27/99 1.0 U 0.1 J 1.0 U 1.0U 2.0U 5.0U 1.0 J 1.0 U 1.0U
W-24s South Plume Shallow 5-20 6/9/99 1.0U 1.0U 1.0U 1.0 U 2.0 U 5.0 U 1.0U 1.0 U 1.0U
W-24s South Plume Shallow 5-20 12/6/99 1.0 U 0.21 J 1.0 U 1.0 U 2.0 U 5.0U 1.0 U 1.0 U 1.0U
W-26i -Side Gradient Intermediate 103-118 12/16198 1.0 U 1.0U 1.0U 1.0U 2.0 U 0.5J 0.6J 1.0U 1.0 U
W-281 North Plume Intermediate 73-88 12/1/95 10U 6J 10U 10U 20U sou 10 U 10U 10U
W-28i North Plume Intermediate 73-88 5/5/98 10UD 2.9 DJ 10 UD 10UD 20UD 50UD 10 UD 10UD 10UD
W-28i North Plume Intermediate 73-88 12/18/96 10 UD 14 D 10UD 0.8JD 20U 50UD 10U 10 UD 10UD
W-26i North Plume Intermediate 73-88 616/99 50UD SOUD 50 UD SOUD 100UD 250UD 50 UD SOUD 50UD
W-281 North Plume lntennediate 73-66 1217/99 50 UD 50 UD 50 UD SCUD 100 UD 250 UD 50 UD 50 LID 50 UD
P:\Proj\6()313.01 5\dec-99-t03.xls Page 7 of 21
--------.. ... -.. --· -----Table 3. Data from Monitoring Wells Used for Evaluation of Monitored Natural Attenuation smoo
FCX-Statesville Superfund Site OU3
Well lnfonnation Volatile Organic Compounds
e ns-, -
Mon~oring Screened Sampling 1,2-0lchloro-1, 1-0ichk>ro-Dichiaro-1,2-0ichloro-Melh~ene 4-Melhy~2-Tnchloro-Tnchloro-
wen Zone Well Type Depth Date ethane ethene ethene propane chloride pentanone Toluene ethane ethane
(ft) (µg/1.) (µg/1.) (µg/1.) (µg/1.) (µg/1.) (µg/1.) (µg/1.) (µg/1.) (µg/1.)
W-291 South Plume Intermediate 88-98 12/1195 1.0U 3 1.0U 1.0U 2.0U 5.0 U 1.0U 0.5J 1.0U
W-291 South Plume Intermediate 88-98 511198 2.5 UD 4.4 D 2.5 UD 2.5UD 5.0UD 12UD 2.5 UD 2.5UD 2.5 UD
W-291 Dup South Plume Intermediate BB-98 12/20/98 2.0 UD 4D 2.0UD 2.0 UD 4.0UJ 10UD 2.0 UD 2.0UD 2.0 UD
W-291 South Plume lntennediate 88-98 12/20198 2.0 UD 3D 2.0 UD 2.0UD 4.0 UJ 10 UD 2.0 UD 2.0UD 2.0 UD
W-291 South Plume Intermediate 88-98 619199 2.0 UD 4.4 D 2.0 UD 2.0UD 4.0 UD 10UD 2.0 UD 2.0UD 2.0UD
W-291 Dup South Plume Intermediate 88-98 619199 2.0 UD 4.4D 2.0 UD 2.0UD 4.0 uo 10UD 2.0 UD 2.0UD 2.0UD
W-29I South Plume Intermediate BB-98 12/9199 5.0 UD 3.SJD 5,0 UD 5.0UD 10UD 25UD 5,0 UD 5,0 UD 5.0 UD
W-29iDup South Plume Intermediate 88-98 12/9199 5.0 UD 4.3JD 5.0 UD 5.0UD 10UD 25UD 5.0 UD 5.0 UD 5.0 UD
W-301 North Plume Intermediate 37.5-47.5 12/1195 50 U sou sou sou 100 U 250U sou sou sou
W-30i North Plume Intermediate 37.5-47.5 4130198 2.5 UD 1.1 DJ 0.38 DJ 5.3 D 12 D 12UD 0.46 DJ 2.5UD 2.5UD
W-30i North Plume Intermediate 37.5-47.5 12/19198 20UD 20U 20 UD 5 DJ 40U 100 UD 20U 20 UD 20 UD
W-30i North Plume Intermediate 37.5-47.5 1/26199 1.0 U 3 0.1 J 5 2.0U 5.0 U 0.1 J 1.0U 0.2J
W-JOI North Plume Intermediate 37.5-47.5 1/27199 50UD 50 UD 50 UD 50UD 100 U 250UD 50 UD 50 UD 50UO
W-301 North Plume Intermediate 37.5-47.5 619199 50UD 50 UD 50 UD 50 UD tOOUD 250UD 50 UD 50 UD 50UD
W-30I North Plume Intermediate 37.5-47.5 12/BJ99 100 uo 100UD 100 UD 100 UD 200 UD 500 UD 100 UD 100UD 100 UD
W-31s North Plume Shallow 5-15 11/1198 1.0 U 1.0U 1.0U 1.0U 2.0U 5.0U 0.06J 1.0U 1.0 U
W-31s North Plume Shallow 5-15 11/19198 1.0U 1.0 U 1.0 U 1.0U 2.0 U 5.0 U 0.068J 1.0 U 1.0U
W-31s Dup North Plume Shallow 5-15 11/19198 1.0U 1.0U 1.0 U 1.0 U 2.0 U 5.0U 1.0U 1.0U 1.0U
W-31s North Plume Shallow 5-15 12/16198 1.0 U 1.0U 1.0 U 1.0 U 2.0 U 5.0U 1.0U 1.0U 1.0U
W-31sc North PlurTle Shallow 5-15 617199 1.0U 1.0U 1.0 U 1.0 U 2.0U 5.0U 1.0U 1.0U 1.0 U
W-31sc North Plume Shallow 5-15 6/10199 1.0U 1.0U 1.0U 1.0 U 2.0U 5.0U 1.0 U 1.0U 1.0 U
W-31s North Plume Shallow 5-15 12/6/99 1,0 U 1.0 U 1.0 U 1.0 U 2,0 U 5.0 U 1,0 U 1.0U 1.0 U
W-31s Dup North Plume Shallow 5-15 12/16199 1.0 U 1.0 U 1.0 U 1.0 U 2.0 U 5.0U 1.0U 1.0U 1.0 U
W-311 North Plume Intermediate 34-44 11/1198 1.0 U 1.0 U 1.0 U 1.0U 2.0 5.0U 1.0U 1.0U 1.0 U
W-311 North Plume Intermediate 34-44 11/19198 1.0U 1.0U 1.0U 1.0 U 2.0J 5.0U 1.0U 1.0U 1.0 U
W-311 North Plume Intermediate 34-44 12/16198 1.0U 1.0U 1.0 U 1.0 U 2.0U 5.0U 1.0U 1.0U 1.0 U
W-311 North Plume Intermediate 34-44 617199 1.0 U 1.0U 1.0 U 1.0 U 2.0U 5.0U 1.0U 1.0U 1.0U
W-31i North Plume Intermediate 34-44 12/6199 1.0 U 1.0U 1.0 U 1.0U 2.0 U 5.0 U 1.0 U 1.0U 1.0 U
W-321 South Plume Intermediate 112-132 11/1198 1.0U 1.0U 1.0 U 1.0U 2.0U 5.0U 0.24 J 1.0 U 1.0U
W-321 South Plume Intermediate 112-132 11/19198 1.0U 1.0U 1.0 U 1.0U 2.0U 5.0 U 0.24 J 1.0U 1.0U
W-321 South Plume Intermediate 112-132 12/18198 1.0U 1.0U 1.0U 1.0U 2.0 UJ 5.0UJ 1.0 U 1.0U 1.0 U
W-321 South Plume Intermediate 112-132 619199 1.0U 1.0U 1.0 U 1.0 U 2.0 U 5.0 U 1.0U 1.0U 1.0U
W-32i South Plume Intermediate 112-132 12/7199 1.0 U 1.0 U 1.0U 1.0 U 2.0 U 5.0 U 1.0 U 1.0 U 1.0U
P:\Proj\60313.015\dec-89-103.xls Page 8 of 21
- ---.. ---.. -· ------ -.. -Table 3. Data from Monitoring Wells Used for Evaluation of Monitored Natural Attenuation 617/00
FCX-Statesvllle Superfund Site OU3
Well Information Electron Acceptors
e
Monitoring · Screened Sampling Manganese Manganese
Wei Zone Well Type Depth Date Aluminumd DO Nitrate/ Nitrite (total) (II) Iron (totaQ Iron (II) Sulfate Sulfide H2S
(ft) (mgll) (ppm) (mg/L) (mg/L) (ppm) {mg/L) (ppm) (mg/L) (mg/L) (mgll)
W-1s Side Gradient Shallow 38-48 12/19198 4.5 0.58 0.749 u 1.810 0.5 u
W-5s South Plume Shallow 32-42 4/1194
W-5s South Plume Shallow 32-42 10/1194
W-5s South Plume Shallow 32-42 4/30198 0.2 1.2 1.12 u 2.93 u u u
W-5s South Plume ShaUow 32-42 12/17198 1.9 1.430 11.100 u u
W-5s1 South Plume ShaUow 32-42 619199 34.9 1.0 2.3 2.43 0.4 36.1 0.3 1.8 0
W-5s South Plume Shallow 32-42 1211199 7.350 2.6 1.710 0.3 7.710 1.6 2.3 0
W-5s Dup South Plume Shallow 32-42 12/17199 2.0 1.6 13.0 u
W•Si South Plume Intermediate 56-66 10/1194
W-5i South Plume Intermediate 56-66 5/5198 2.0 u 0.0467 u 1.02 1.1 22 u
W-Si South Plume lntennediate 56-66 12/19198 u 0.011 B u 0.0706 B 0.2 u
W-5i South Plume Intermediate 56-66 618199 0.746 2.0 u 0.0406 0 0.595 0.4 19 0
W-5i South Plume Intermediate 56-66 12/8/99 10.400 1.5 0.26 0.101 0 5.990 2.5 18 0
W-6s Side Gradient Shallow 22-37 4/30198 0.173 5.16
W-6s Dup Side Gradient Shallow 22-37 4/30198 0.184 5.44
W-8i Side Gradient lntennediate 83-93 . 12/16198 1.0 u 0.0331 u 4.380 0.2 63 u
W-9s Treatment Shallow 34-49 5/5198 1.3 0.0365 1.08 u
W-9s Dup Treatment Shallow 34-49 5/5198 1.3 0.0529 2.43 u
W-9s Treatment Shallow 34-49 12/17198 1.8 0.535 35.6 u
W-10i Side Gradient Intermediate 59-69 10/1194
W-10i Side Gradient ln.termediate 59-69 1/1195
W-10i Side Gradient Intermediate 59-69 12/1195
W-10i Side Gradient lntennediate 59-69 4/30198 0.6 u 0.0022 B u 0.0361 B u 4.3 0.1
W-10i Side Gradient Intermediate 59-69 12/19198 2.0 0.31 0.0044 B u 0.111 0.2 u
W-10i Side Gradient Intermediate 59-69 6/8/99 0.128 B 2.0 u 0.0019 B 0 0.0434 B 0.1 3.3 0.1
W-10i Side Gradient Intermediate 59-69 12/9199 0271 u 0.0051 0 0.0974 0.3 5.3 0
W-11s Side Gradient Shallow 25-40 4/30198 0.0839 2.17
W-12s Background Shallow 18-33 10/1194
W-12s Background Shallow 18-33 1/1195
W-12s Background Shallow 18-33 4/30/98 7.0 1.7 0.0357 u 2.37 0.25 5.8 u
W-12s' Background Shallow 18-33 12/8/99 NA NA NA NA NA NA NA NA NA NA
P:\Proi'\60313.01 5\dec-99-t03.:ds Page 9 of 21
------· .. ----_., --,. -_, ... ----Table 3. Data from Monitoring Wells Used for Evaluation of Monitored Natural Attenuation smoo
FCX-Statesville Superfund Site OU3
Well Information Electron Acceptors
e
Monitoring Screened Sampling Manganese Manganese
Well Zone Well Type Depth Date Aluminumd DO Nitrate/ Nitrite (total) (II) Iron (total) Iron (II) Sulfate Sulfide H2S
(ft) (mg/I.) (ppm) (mg/I.) (mg/I.) (ppm) (mg/I.) (ppm) (mg/I.) (mg/I.) (mg/I.)
W-12i Background Intermediate 73-83 10/1194
W-12i Background Intermediate 73-83 1/1195
W-12i Background Intermediate 73-83 4/30198 4,0 2.7 0.0056 B u 0.042 B u 38 u
W-12i Background Intermediate 73-83 12/16198 3.5 3.1 0.0041 B u 0.0213 B 0.1 46
W-12i Background lntennediate 73-83 6(//99 0.0247U 3.0 3.3 0.0054 B 0 0.017 U 0 u 0
W-12I Background lntennedlate 73-83 12/9/99 1250 4 2.9 0.0293 0.1 1.890 0.3 32 0
W-16s Treatment Shallow 35-50 5/5198 0.0413 0.721
W-16s Treatment Shallow 35-50 12/17198
W-16i Treatment Intermediate 77-87 5/5198 0.001 U 0.157
W-16i Treatment Intermediate 77-87 12/17198
W-17s Source Shallow 29.5-44.5 10/1194
W-17s Source Shallow 29.5-44.5 1/1195
W-17s Source Shallow 29.5-44.5 5/5198 5.0 24 0.494 u• 1.7 0.2 u u
W-17s · Source Shallow 29.5-44.5 12/18198 4.0 27 0.699 0.3 5.1 0.8 u
W-17sd Source Shallow 29.5-44.5 12/9199 5.450 NA NA 0.707 NA 1.000 NA NA NA NA
W-18s Background Shallow 22.5-37.5 12/1195
W-18s Background Shallow 22.5-37.5 4/30198 6.0 0.43 0.0332 u 1.12 0.2 u u
W-18s Background Shallow 22.5-37.5 12/16198 u 0.285 14.300 u
W-18s Background Shallow 22.5-37.5 6/8199 37.4 3.0 0.47 0.530 0 28.4 0.2 1.8 0
W-18s Background Shallow 22.5-37.5 12/6199 0.444 3 0.32 0.0211 0 · 0231 0.4 1.3 0
W-19s North Plume Shallow 17-27 12/1195
W-19s North Plume Shallow 17-27 5/5198 5.0 0.45 0.0364 u 1.67 0.2 47 u
W-19s North Plume Shallow 17-27 12/17198 0.0744 3.260 31
W-19s North Plume Shallow 17-27 6/10199 0.795 4.0 0.83 0.0414 0.758 0.4 25 0
W-19s North Plume Shallow 17-27 12/7199 0.0376 2 1.2 0.0337 0 0.0156 0.1 17 0
W-20s North Plume Shallow 4-14 12/1/95
W-20s North Plume Shallow 4-14 4/29198 8.0 u 0.00048 u 0.0123U u u u
W-20s Dup North Plume Shallow 4-14 4/29198 u 0.0076 8 0.357 u
W-20s North Plume ShaUow 4-14 12/20198 4.0 0.21 0.016 8 u 0.844 0.2 u
W-20s North Plume Shallow 4-14 6/8199 0.593 3.5 u 0.01078 0 0.730 0.2 u 0
W-20s North Plume Shallow 4-14 12/7199 0.0282 5 0.37 0.001 0.1 0.0389 0.1 1.3 0
W-20s Dup North Plume Shallow 4-14 12/7199 0.0217 u 0.00044 0.0161 1.3
P:\Proj\60313.015\dec-99•103.xls Page 10 of 21
-----,_ -,,.. -·-lll!!lt -... --------... -Table 3. Data from Monitoring Wells Used for Evaluation of Monitored Natural Attenuation 6f7/00
FCX-Statesville Superfund Site OU3
Well lnfonnation Electron Acceptors
e
Monitoring Screened Sampling Manganese Manganese
Well Zone WellType Depth Date Aluminumd DO Nitrate/ Nitrite (total) (11) Iron (total) Iron (11) Sulfate Sulfide H2S
(fi) (mglL) (ppm) (mgll) (mgll) (ppm) (mgll) (ppm) (mglL) (mgll) (mgll)
W-20i North Plume Intermediate 84-94 3/1/96
W-20i North Plume lntenned"'te 84-94 4/29/98 2.0 0.32 0.0016 B u 0.0181 B u 6.8 u
W-20i North Plume Intermediate 84-94 12115/98 1.0 0.067 0.0013 B u 0.0745 B u 13 u
W-20i North Plume Intermediate 84-94 1/26/99
W-201 North Plume Intermediate 84-94 1/27/99
W-20i North Plume Intermediate 84-94 6/8/99 0.0247 U 1-1 0.48 0.003 U 0 0.017 U 0.1 9.8 0
W-20i North Plume Intermediate 84-94 1217/99 0.0604 0.8 0.71 0.0011 0 0.0156 0.1 13 0
W-20d' North Plume Deep 152-166 9/23/98 -
W-20d North Plume Deep 152-166 12117/98 0.5 0.00024 B u 0.012 B u 22 u
W-20d North Plume Deep 152-166 6/9/99 0.423 0.2 u 0.0028 B 0 0.147 0 11 0
W-20d North Plume Deep 152-166 1219/99 0.137 0.6 u 0.0016 0 0.0282 0 9.2 0
W-22s South Plume Shallow 20-35 12/1/95
W-22s South Plume Shallow 20-35 511/98 7.0 9.5 0.523 0.3 1.82 1.2 1.3 u
W-22s South Plume Shanow 20-35 12/20/98 4.5 9 0.645 0.2 5.340 2.2 u
W-22sd South Plume Shallow 20-35 12/8/99 12.200 NA 5.9 0.997 NA· 13.700 NA 1.3 NA
W-22i South Plume Intermediate 57-67 311/96
W-22i South Plume Intermediate 57-67 5/1/98 2.0 4.2 0.0464 u 1.26 0.95 u u
W-22i South Plume lntennedlate 57-67 12/20/98 1.0 4 0.0222 u 1.320 1.9 u
W-22i South Plume Intermediate 57-67 6/9/99 0.0247 U 0.8 2.9 0.070 0 1.08 1.6 1.3 0
W-221 South Plume Intermediate 57-67 12/8/99 0.0213 3.2 0.0316 0 2.130 3.1 2.8 0
W-22i □up South Plume Intermediate 57-67 1218/99 0.0165 3.3 0.0296 1.950 2.8
W-24s South Plume Shallow 5-20 12/1/95
W-24s South Plume Shallow 5-20 5/1/98 0.25 2.59 65.7 18
W-24s □up South Plume Shallow 5-20 1/27/99
W-24s South Plume Shallow 5-20 1/27/99 0.9 0.60 1.78 J 0.1 55.8 J 1.2 3.3 u
W-24s South Plume Shallow 5-20 6/9/99 81.3 2.0 u 1.47 0.3 80.8 2.0 u 0
W-24s South Plume Shallow 5-20 12/8/99 18.000 0.55 0.573 0.1 16.500 1.5 u 0
W-26i Side Gradient Intermediate 103-118 12116/98 3.5 2 0.0174 u 0.0234 B u 11 u
W-28i North Plume Intermediate 73-88 1211/95
W-28i North Plume Intermediate 73-88 5/5/98 2.5 0.14 0.0086 B u 0.573 u 42 u
W-28i North Plume Intermediate 73-88 12118/98 2.5 0.52 0.0071 B u 0.433 0.1 24 u
W-28i North Plume Intermediate 73-88 6/8/99 0.813 0.5 u 0.0401 0 0.695 0 29 0
W-28i North Plume Intermediate 73-88 1217/99 0.556 0.8 0.44 0.0043 0 0.233 0 14 0
P:\Proj\60313.015\dec-99-103.xls Page 11 of21
--~--~' -,_ -·-aa; 111!11 ,. -/ .. --... ---·-Table 3. Data from Monitoring Wells Used for Evaluation of Monitored Natural Attenuation 6f7/00
FCX-Statesville Superfund Site OU3
Well Information Electron Acceptors
e
Monitoring Screened Sampling Manganese Manganese
Well Zone Well Type Depth Date Aluminumd DO Nitrate/ Nitrite (total) (11) Iron (total Iron (11) Sulfate Sulfide H2S
(ft) (mg/L) (ppm) (mgll) (mgll) (ppm) (mgll) (ppm) (mg/L) (mg/L) (mgll)
W-29i South Plume Intermediate 88-98 1211195
W-29i South Plume Intermediate 88-98 511198 5.0 8.5 0.0274 u 0.0123 U u u u
W-29iDup South Plume Intermediate 88-98 · 12120198 4.5 7.4 0.0001 u 0.026 u u
W-29i South Plume lntennecliate 88-98 12/20198 4.0 7.5 0.0256 u 5.7U u u
W-29i South Plume Intermediate 88-98 619199 0.0247 U 4.0 5.8 0.0190 0 0.0170 U 0.1 u 0
W-29i Dup South Plume Intermediate 88-98 619199 0.0247 U 4.0 5.7 0.0194 0 0.0170 U 0.1 u 0
W-29i South Plume Intermediate 88-98 12/9/99 0.0260 3 6.0 0.0257 0 0.0156 0.1 2.3 0.1
W-29iDup South Plume Intermediate 88-98 12/9/99 0.0367 6.8 0.0265 0.0224 1.8
W-301 North Plume Intermediate 37.5-47.5 1211195
W-30i North Plume Intermediate 37.5-47.5 4/30198 1.8 u 0.023 u 1.59 0.7 35 5
W-30i North Plume Intermediate 37.5-47.5 12119198 0.3 u 0.0784 0.1 3.030 0.7 0.3
W-30i North Plume Intermediate 37.5-47.5 1/26199
W-30i North Plume Intermediate 37.5-47.5 1/27199
W-30i North Plume Intermediate 37.5-47.5 619/99 3.04 0.6 u 0.0735 0 1.63 0.4 35 0.1
W-30i North Plume Intermediate 37.5-47.5 12/8/99 4.310 0.9 u 0.166 0 2.960 0.1 27 2
W-31s North Plume Shallow 5-15 11/1/98
W-31s North Plume Shallow 5-15 11/19198 6.0 u 0.975 0.45 12.8 7 9.1 u
W-31s Dup North Plume Shallow 5-15 11/19/98 6.5 u 17.4 0.4 64.1 6 10 u
W-31s North Plume Shallow 5-15 12116/98 0.4 0.50 1.420 0.3 4.730 2.9 10 u
W-31sc North Plume Shallow 5-15 6fl/99 54.6 1.0 u 2.41 0 66.7 2.1 u 0
W-31s0 North Plume Shallow 5-15 6/10199 1.10 1.0 0.89 0.784 0.4 1.31 0.9 3.8 0
W-31s North Plume Shallow 5-15 12/6199 0.492 0.95 0.252 0.3 0.597 1.6 3.8 0
W-31s Dup North Plume Shallow 5-15 12/16/99 0.51 1.4 4.4 22
W-31i North Plume lntennediate 34-44 11/1198
W-31i North Plume lntennediate 34-44 11/19/98 1.6 0.50 0.0045 u 0.0399 u 11 u
W-31i North Plume lntennediate 34-44 12116198 0.6 0.60 0.0048 8 0.15 0.02088 0.1 6.6 u
W-31i North Plume lntennediate 34-44 6{7/99 0.546 0.6 0.93 0.0101 8 0 0.336 0.8 15 2
W-311 North Plume Intermediate 34-44 12/6199 0.087 0.6 0.56 0.0057 0 0.107 0.3 9.7 0.1
W-32i South Plume Intermediate 112-132 11/1/98
W-321 South Plume Intermediate 112-132 11/19/98 10' 0.59 0.0288 u 1.2 14 u
W-32i South Plume Intermediate 112-132 12118198 1.0 0.74 0.01228 0.1 0.344 u 10 u
W-321 South Plume Intermediate 112-132 619/99 0.143 8 0.8 0.53 0.0154 0 0.217 0.1 8.8 0
W-321 South Plume Intermediate 112-132 1217/99 0.101 0.36 0.0142 0 0.157 0.1 10 0
P:\ProJ\60313.015\dec-99-to3.xls Page 12 of 21
---.. ~ ----------~ ... --.. : -(all ... -Table 3. Data from Monitoring Wells Used for Evaluation of Monitored Natural Attenuation smoo
FCX-Statesville Superfund Site OU3
Well lnfonnatlon Products of Degradation
e
Monitoring Screened Sampling Volatile Fatty
Well Zone WeU Type Depth Date co, Alkalinity Alkalinity Methane Ethene Ethane Acids Chlonde
(ft) (~/L) (~/L) (~) (µg/L) (µg/L) (µg/L) (~/L) (~/L)
W-1s Side Gradient Shallow 38-48 12119/98 16 13 13 0,14 0.007 0.011 u u
W-5s South Plume Shallow 32-42 4/1/94
W-5s South Plume Shallow 32-42 10/1/94
W-5s South Plume Shallow 32-42 4/30/98 112 u u u u u 12 34
W-5s South Plume Shallow 32-42 12117/98 234 7.6 7,6 6,2 0.024 0,30 6,0 5,3
W-Ssa South Plume Shallow 32-42 6/9/99 105 9,3 4,5 0,12 0,015 4,3
W-5s South Plume Shallow 32-42 1217/99 85 7,8 u u u 13 4,7
W,5s Dup South Plume Shallow 32-42 12117/99 9,8 9,8 6,48 0,03 0,14 3,0 5,6
W-5i South Plume lntennediate 56-66 10/1/94
W-5i South Plume Intermediate 56-66 5/5/98 40 39 39 u u u 14 2.0
W-5i South Plume lntennediate 56-66 12119/98 38 52 52 0.56 0,36 0,15 3.0 1.3
W-5i South Plume Intermediate 56-66 6/8/99 60 51 0.48 0,072 0.091 2,4
W-5I South Plume Intermediate 56-66 1218/99 20 56 u u u 5,5 22
W-6s Side Gradient Shallow 22-37 4/30/98
W-6s Dup Side Gradient Shallow 22-37 4/30/98
W-8i Side Gradient lntenmed~te 83-93 12116/98 2 110 110 0-77 27 0,15 3.0 9,2
W-9s TreatmE!nt Shallow 34-49 5/5/98 u u u u u 5.7 4.9
W-9s Dup Treatment Shallow 34-49 5/5/98 u u u u u 4,6 4,7
W-9s Treatment Shallow 34-49 12117/98 2,2 2,2 0.51 0,009 0,12 u 3, 1
W-10i Side Gradient Intermediate 59-69 10/1/94
W-10i Side Gradient Intermediate 59-69 1/1/95
W-10i Side Gradient Intermediate 59-69 1211/95
W-10i Side Gradient Intermediate 59-69 4/30/98 15 38 38 u u u 12 u
W-10i Side Gradient Intermediate 59-69 12119/98 10 39 39 1,6 0.010 0,016 u u
W-10i Side Gradient Intermediate 59-69 6/8/99 15 39 540 0,63 u 1,1
W-101 Side Gradient Intermediate 59-69 1219/99 10 38 u u u u 1,1
W-11s Side Gradient Shallow 25-40 4/30/98
W-12s Background Shallow 18-33 10/)/94
W-12s Background Shallow 18-33 1/1/95
W-12s Background Shallow 18-33 4/30/98 24 u u u u u 5.7 1,9
W-12s' Background Shallow 18-33 1218/99 NA NA NA NA NA NA NA NA
P:\Proj\60313.015\dec-99-to3.xls Page 13 of 21
-~ ·~ ·------,. , . -. ~ -·----111!1 --·-Table 3. Data from Monitoring Wells Used for Evaluation of Monitored Natural Attenuation smoo
FCX-Statesville Superfund Site OU3
Well lnfonnation Products of Degradation
e
Monitoring Screened Sampfing Volatile Fatty
WeU Zone Well Type Depth Date co, Alkafintty Alkannily Methane Ethene Ethane Acids Chloride
(fi) (mgll) (mgll) (mg/l) (µgll) (µg/l) (µg/l) (mgll) (mgll)
W-12i Background Intermediate 73-83 10/1194
W-12i Background Intermediate 73-83 1/1195
W-12i Background Intermediate 73-83 4/30198 60 25 25 u u u 34 30
W-12i Background Intermediate 73-83 12/16198 55 31 31 2.2 0.028 0.26 u 31
W-12i Background Intermediate 73-83 6f/199 120 32 1.7 0.026 u 28
W-12I Background Intermediate 73-83 1219199 30 33 u u u 70 33
W-16s Treatment Shallow 35-50 5/5198
W-16s Treatment Shallow 35-50 12/17198
W-16i Treatment Intermediate 77-87 5/5/98
W-16i Treatment Intermediate 77-87 12/17198
W-17s Source Shallow 29.544.5 10/1194
W-17s Source ShaUow 29.544.5 1/1195
W-17s Source Shallow 29.5-44.5 5/5/98 46 u u u u u 5.7 27
W-17s Souroe Shallow 29.544.5 12/18198 32 3.9 3.9 1.9 0.06 0.12 3.0 29
W-17sd Source Shallow 29.544.5 1219/99 NA NA NA u u u NA NA
W-18s Background ShaUow 22.5-37.5 12/1195
W-18s Background Shallow 22.5-37.5 4/30198 90 u u u u u 23 u
W-18s Background ShaUow 22.5-37.5 12/16198 3.3 3.3 0.37 0.006 0.1 3.0 u
W-18s Background Shallow 22.5-37.5 6/8199 30 3.5 0.14 u u 1.7
W-18s Background Shallow 22.5-37.5 12/6/99 30 2.2 u u u u u
W-19s North Plume Shallow 17-27 12/1195
W-19s North Plume Shallow 17-27 5/5198 100 26 26 u u u 18 31
W-19s North Plume ShaUow 17-27 12/17198 15 15 0.34 0.012 0.083 3.0 34
W-19s North Plume Shallow 17-27 6/10/99 73 16 0.33 u u 43
W-19s North Plume Shallow 17-27 12/7199 55 13 u u u 13 48
W-20s North Plume Shallow 4-14 12/1195
W-20s North Plume Shallow 4-14 4/29198 40 28 28 u u u 12 u
W-20s Dup North Plume Shallow 4-14 4/29198 29 29 u u u 2.9 u
W-20s North Plume Shallow 4-14 12/20198 14 33 33 0.097 u 0.014 3.0 u
W-20s North Plume Shallow 4-14 6/8199 40 31 0.074 u u 1.6
W-20s North Plume Shallow 4-14 12/7/99 14 37 u u u 8.8 2.0
W-20s Dup North Plume Shallow 4-14 12/7/99 37 u u u 8.8 2.1
P:\f>roj\60313.01 5\dee-99-!03 .xis Page 14 of 21
1111111!1 ~ ---,11!1111 1111111!1 ·--·--! \-·---...... -AIR <-·-Table 3. Data from Monitoring Wells Used for Evaluation of Monitored Natural Attenuation 617/00
FCX-Statesville Superfund Site OU3
Well Information Products of Degradation
e
Monitoring Screened Sampling Volatile Fatty
Well Zone Well Type Depth Date co, Alkalinity Alkalinity Methane Ethane Ethane Acids Chloride
(ft) (mg/L) (mg/L) (mg/L) (µg/L) (µg/L) (µg/L) (mg/L) (mg/L)
W-20i North Plume Intermediate 84-94 3/1196
W-20! North Plume Intermediate 84-94 4129198 14 56 56 u u u 26 14
W-20i North Plume Intermediate 84-94 12115/98 16 64 64 1.4 0.55 0.22 u 36-
W-20i North Plume Intermediate 84-94 1/26199
W-20i North Plume Intermediate 84-94 1127/99
W-20i North Plume Intermediate 84-94 6/8199 20 61 1.6 0.028 0.025 · 23
W-201 North Plume Intermediate 84-94 1217/99 10 68 u u u 13 35
W-20d' North Plume Deep 152-166 9123198
W-20d North Plume Deep 152-166 12117198 -c 610 610 4.1 0.43 0.26 u 6.7
W-20d North Plume Deep 152-166 619199 510 1.8 0.59 0.064 2.9
W-2Dd North Plume Deep 152-166 1219199 saturated 460 u u u 7.4 2.6
W-22s South Plume Shallow 20-35 1211195
W-22s South Plume Shallow 20-35 5/1198 55 u u u u u 14 9.9
W-22s South Plume Shallow 20-35 12120198 60 u u 0.26 0.011 0.013 3.0 8.4
W-22sd South Plume Shallow 20-35 1218/99 NA <1.0 u u u u 7.3
W-22i South Plume Intermediate 57-67 3/1196
W-22i South Plume Intermediate 57-67 5/1198 105 49 49 u u u 34 16
W-22i South Plume Intermediate 57-67 12120198 100 45 45 1.1 0.011 0.013 3.0 14
W-22i South Plume Intermediate 57-67 619199 85 57 33 0.69 0.262 9.9
W-22I South Plume Intermediate 57-67 1218/99 65 53 420 u u u 7.9
W-221 Dup South Plume Intermediate 57-67 1218199 53 420 u u u 7.7
W-24s South Plume Shallow 5-20 1211195
W-24s South Plume Shallow 5-20 5/1198 15 15 0.408 u u 17 14
W-24s Dup South Plume ShaUow 5-20 1127199
W-24s South plume ShaUow 5-20 1127199 90 14 14 51 0.041 u 3.0 29
W-24s South Plume Shallow 5-20 619199 55 17 0.34 u u 18
W-24s South Plume Shallow 5-20 1218/99 80 14 u u u u 12
W-26i Side Gradient Intermediate 103-118 12116198 14 86 86 1.3 1.3 0.16 3.0 14
W-28i North Plume Intermediate 73-68 1211195
W-28i North Plume Intermediate 73-68 5/5198 2 84 84 u u u 40 5.2
W-28i North Plume Intermediate 73-68 12118198 120 120 1.5 0.43 0.24 3.0 3.2
W-28i North Plume Intermediate 73-68 618199 130 0.66 0.85 0.11 4.3
W-28i North Plume Intermediate 73-88 1217199 saturated 120 u u u u 2.6
P:\Proj\60313.01 5\dec-99-t03.xls Page 15 of 21
111111!1 .. ~. ·-... :•· ------,'!11111\ ~ '~ ... ... ,' -(la {llill .-i
Table 3. Data from Monitoring Wells Used for Evaluation of Monitored Natural Attenuation 6f7/00
FCX-Statesville Superfund Site OU3
Well lnfonnation Products of Degradation
e
Monitoring Screened Sampling Volatile Fatty
Well Zone Well Type Depth Date co, Alkatinity Alkalinity Methane Ethene Ethane Acids Chloride
(fl) (mg/I.) (mg/I.) (mg/L) (µg/L) (µg/1.) (µg/L) (mg/L) (mg/L)
W-291 South Plume Intermediate 88-98 12/1195
W-29i South Plume Intermediate 88-98 5/1198 50 8.1 8.1 u u u 17 23
W-291 Dup South Plume Intermediate 88-98 12/20198 58 11 11 0.24 0.01 0.02 3.0 21
W-29i South Plume Intermediate 88-98 12/20198 60 8.7 8.7 0.26 0.009 0.019 3.0 21
W-291 South Plume Intermediate 88-98 619199 BO 12 0.33 0.034 0.007 15
W-29i Dup South Plume Intermediate 88-98 619199 BO 12 0.43 0.050 0.016 14
W-291 South Plume Intermediate 88-98 12/9/99 45 9.4 u u u 5.5 19
W-29i □up South Plume lntennediate 88-98 12/9/99 9.4 u u u 5.5 19
W-30i North Plume Intermediate 37.5-47.5 12/1/95
W-30i North Plume Intermediate 37.5-47.5 4/30/98 19 170 170 u u u 49 30
W-301 North Plume Intermediate 37.5-47.5 12/19/98 18 140 140 1.4 0.46 0.095 9.0 22
W-30i North Plume Intermediate 37.5-47.5 1/26/99
W-30i North Plume Intermediate 37.5-47.5 1/27/99
W-301 North Plume Intermediate 37.5-47.5 6/9/99 5 130 1.7 0.99 0.45 19
W-301 North Plume Intermediate 37.5-47.5 12/8/99 saturated 140 u u u 11 21
W-31s North Plume Shallow 5-15 11/1/98
W-31s North Plume Shallow 5-15 11/19/98 45 61 61 11.6 7.6 1.2 u 4.6
W-31s Dup North Plume Shallow 5-15 11/19/98 50 55 55 11.5 5.9 1.2 u 4.6
W-31s North Plume Shallow 5-15 12/16/98 26 64 64 3.8 · 0.015 0.27 3.0 5.5
W-31sc North Plume Shallow 5-15 6///99 43 0.48 u u 5.5
W-31sc North Plume Shallow 5-15 6110199 25 39 0.19 u u 4.1
W-31s North Plume Shallow 5-15 12/6/99 20 39 u u u u 3.1
W-31s □up North Plume Shallow 5-15 12/16/99 64 64 3.3 0.011 0.23 u 6.1
W-311 North Plume Intermediate 34-44 11/1/98
W-311 North Plume Intermediate 34-44 11/19/98 12 34 34 0.18 1.8 0.022 u 1.1
W-311 North Plume Intermediate 34-44 12/16/98 10 31 31 0.80 0.019 0.21 u 1.5
W-31i North Plume Intermediate 34-44 6//199 15 58 0.20 u u 2.5
W-311 North Plume Intermediate 34-44 12/6/99 10 30 u u u u 1.7
W-32i South Plume Intermediate 112-132 11/1/98
W-32i South Plume Intermediate 112-132 11/19/98 10 65 65 0.20 1.4 0.023 3.0 1.7
W-321 South Plume Intermediate 112-132 12/18198 16 67 67 0.52 0.061 0.097 3.0 1.9
W-32i South Plume Intermediate 112-132 619/99 20 62 0.61 0.15 0.020 2.6
W-32i South Plume Intermediate 112-132 12/7/99 8 61 u u u 83 2.5
P:\?roJ"\60313.015\dec-99-t03.xls Page 16 of21
-• --1!!!111, ... ---: . ~. \-!!1!111 --.. --<--Table 3. Data from Monitoring Wells Used for Evaluation of Monitored Natural Attenuation 617100
FCX-Statesville Superfund Site OU3
Well lnfonnation Nutrients Geochemical Parameters
e
Monitoring Screened Sampling
Well Zone Well Type Depth Date TOC Phosphate TKN Ammonium Nitrate/ Nitrite Conductivity Temperature pH Eh
(It) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mmhos) ('C) (unitless) (mv)
W-1s Side Gradient Shallow 3848 12119/98 u 0.58 15 21 5.5 300
W-5s South Plume Shallow 3242 4/1/94
W-5s South Plume Shallow 3242 10/1/94
W-5s South Plume Shallow 3242 4/30/98 9.4 u u u 1.2 157 21.3 4.7 216
W-5s South Plume Shallow 3242 12117/98 5.6 1.9
W-5s1 South Plume Shallow 3242 6/9/99 3.6 2.3 70 22.5 6.8 298
W-5s South Plume Shallow 3242 1217/99 6.4 2.6 70 17.4 4.9 205
W-5s Dup South Plume Shallow 3242 12117/99 5.6 2.0
W-5i South Plume Intermediate 56-66 10/1/94
W-Si South Plume Intermediate 56-66 515/98 1.0 0.11 u u u 161 19.8 8.3 136
W-5i South Plume Intermediate 56-66 12119/98 u u 120 16 6.8 132
W-Sl South Plume Intermediate 56-66 618/99 3.6 u 150 19 7.7 320
W-5i South Plume Intermediate 5tH;6 1218/99 u 0.26 140 16.4 6.5 100
W-6s Side Gradient Shallow 22-37 4/30/98 188 19.4 5.1
W-6s Dup Side Gradient Shallow 22-37 4/30/98 188 19.4 5.1
W-lli Side Gradient Intermediate . 83-93 12116/98 3.6 u 390 17 8.5 139
W-9s Treatment Shallow 3449 5/5/98 u 0.050 u u 1.3 37 20.1 6.4 230
W-9s Dup Treatment Shallow 3449 515/98 1.0 0.050 u u 1.3 37 20.1 6.4 230
W-9s Treatment Shallow 3449 12117/98 u 1.8
W-10i Side Gradient Intermediate 59-69 10/1/94
W-10i Side Gradient Intermediate 59-69 1/1/95
W-10i • Side Gradient Intermediate 59-69 1211/95
W-10i Side Gradient Intermediate 59-69 4/30/98 u 0.022 u u u 87.7 18.2 7.2 310
W-10i Side Gradient Intermediate 59-69 12119/98 u 0.31 80 17 7.7 350
W-10i Side Gradient Intermediate 59-69 6/8/99 u u 100 16 7.5 124
W-10i Side Gradient Intermediate 59-69 1219/99 1.2 u 110 15.9 7 205
W-11s Side Gradient ShaUow 2540 4/30/98 68 19.1 5.1 302
W-12s Background Shallow 18-33 10/1/94
W-12s Background Shallow 18-33 1/1/95
W-12s Background Shallow 18-33 4/30/98 u u u u 1.7 43.7 19.3 4.9 305
W-12s' Background Shallow 18-33 1218199 NA NA NA NA NA NA NA NA NA
P:\Prof\60313.01 5\dec.-99-!03.xls Page 17 of 21
-------- ----- ------Table 3. Data from Monitoring Wells Used for Evaluation of Monitored Natural Attenuation 617100
FCX-Statesville Superfund Site OUJ
Well Information Nutrients Geochemical Parameters
e
Monitonng Screened Sampling
Well Zone Well Type Depth Date TDC Phosphate TKN Ammonium Nitrate/ Nibite Conduc1ivi1y Temperature pH Eh
(ft) (mg/I.) (mg/I.) (mg/I.) (mg/I.) (mg/I.) (mmhos) ('C) (unilless) (mv)
W-12i Background lntennediate 73-83 10/1/94
W-12i Background lntennediate 73-83 1/1/95
W-12i Background Intermediate 73-83 4/30/98 1.3 0.027 u u 2.7 281 20 6.0 284
W-12i Background Intermediate 73-83 12/16/98 u 3.1 200 17 5.0 22
W-12i Background Intermediate 73-83 611/99 u 3.3 200 20 6.0 -168
W-12i Background Intermediate 73-83 12/9199-1.1 2.9 260 15.8 5.7 -90
W-16s Treatment Shallow 35-50 5/5/98 75 20 5.4 192
W-16s Treatment Shallow 35-50 12/17/98 75 20 5.4 323
W-16i Treatment Intermediate 77-87 5/5/98 250 22 7.3 180
W-16i Treatment Intermediate 77-87 12/17/98
W-17s Source Shallow 29.5-44.5 10/1/94
W-17s Source Shallow 29.5-44.5 1/1/95
W-17s Source Shallow 29.5-44.5 5/5/98 1.9 0.041 u u 24 320 27 4.9 230
W-17s Source ShaUow 29.5-44.5 12/18/98 u 27 300 23 4.4 252
W-17s' Source Shallow 29.5-44.5 12/9/99 NA NA NA NA NA 490 21.1 4.5 NA
W-18s Background Shallow 22.5-37.5 12/1/95
W-18s Background Shallow 22.5-37.5 4/30/98 u 0.088 u u 0.43 20 18.4 5.2 498
W-18s Background Shallow 22.5-37.5 12/16198 u u
W-18s Background Shallow 22.5-37.5 6/8199 u 0.47 20 15 6.1 351
W-18s Background Shallow 22.S-37.5 1216199 u 0.32 20 14.7 5.6 225
W-19s North Plume Shallow 17-27 12/1195
W-19s North Plume Shallow 17-27 5/5198 u 0.031 u u 0.45 269 17.8 6.3 196
W-19s North Plume ShaUow 17-27 12117198 1.3
W-19s North Plume Shallow 17-27 6110199 1.4 0.83 230 16 5.5 228
W-19s North Plume Shallow 17-27 12/7199 u 1.2 270 16.6 5.4 326
W-20s North Plume Shallow 4-14 12/1195
W-20s North Plume Shallow 4-14 4/29198 u 0.045 u u u 70.4 14.8 7.4 131
W-20s Dup North Plume Shallow 4-14 4/29198 u 0.069 u u u
W-20s North Plume Shallow 4-14 12/20198 u 0.21 55 15 6.9 252
W-20s North Plume ShaUow 4-14 6/8199 u u 60 16 6.1 243
W-20s North Plume Shallow 4-14 12/7199 u 0.37 80 13.5 6.6 321
W-20s Dup North Plume Shallow 4-14 12/7199 u u
P:\Pror,BOJ 13.01 5'dec-99--t03.Jds Page 18 of 21
----------- --------Table 3. Data from Monitoring Wells Used for Evaluation of Monitored Natural Attenuation 6nl00
FCX-Statesville Superfund Site OU3
Well Information Nutrients Geochemical Parameters
e
Monitoring Screened Sampling
Well Zone Well Type· Depth Date TOC Phosphate TKN Ammonium Nitrate/ Nitrite Conductivity Temperature pH Eh
(fl) (mg/L) (mg/L) (mg/L) (mg/I.) (mg/L) (mmhos) ('C) (unitless) (mv)
W-20i North Plume Intermediate 84-94 311196
W-20i North Plume Intermediate 84-94 4/29198 u u u u 0.32 172 15.2 8.6 -328
W-20i North Plume Intermediate 84-94 12/15198 u 0.067 190 15 7.6 199
W-20i North Plume Intermediate 84-94 1/26/99
W-20i North Plume Intermediate 84-94 1/27/99
W-20i North Plume Intermediate 84-94 6/8199 u 0.48 210 16 7.3 227
W-20i North Plume lntennediate 84-94 12/7199 u 0.71 250 13.8 7.4 -199
W-20d' North Plume Deep 152-166 9/23198
W-20d North Plume Deep 152-166 12/17198 4.6 -237
W-20d North Plume Deep 152-166 6/9/99 5.7 u 1700 16 11.9 136
W-20d North Plume Deep 152-166 12/9/99 4.8 u 1750 14 11.7 .350
W-22s South Plume Shallow 20-35 12/1/95
W-22s South Plume Shallow 20-35 511/98 u u u u 9.5 108 18.9 4.7 332
W-22s · South Plume ShaUow 20-35 12/20/98 u 9 85 18 4.7 230
W-22sd South Plume Shallow 20-35 12/8/99 1.0 5.9 120 16.4 4.8 NA
W-22i South Plume Intermediate 57-67 3/1/96
W-22i South Plume Intermediate . 57-67 511198 1.0 u u u 4.2 176 19.1 6.2 222
W-22i South Plume Intermediate 57-67 12/20198 1.3 4 140 19 6.0 136
W-22i South Plume Intermediate 57-67 619/99 2.4 2.9 170 16 6.3 145
W-22i South Plume Intermediate 57-67 12/8/99 u 3.2 220 NA 62 94
W-221 Cup South Plume Intermediate 57-67 12/8/99 1.0 3.3
W-24s South Plume Shallow 5-20 12/1/95
W-24s South Plume Shallow 5-20 511198 1.3 0.12 u u 0.25 185 20.5 5.7 230
W-24s Dup South Plume Shallow 5-20 1/27199
W-24s South Plume Shallow 5-20 1/27199 1.2 u 240
W-24s South Plume Shallow 5-20 6/9199 1.4 u 90 15.5 5.9 204
W-24s South Plume Shallow 5-20 12/8/99 u 0.55 130 13 5.8 237
W-26i Side Gradient Intermediate 103-118 12/16198 u 2 240 17 7.1 237
W-28i North Plume Intermediate 73-68 12/1195
W-28i North Plume Intermediate 73-88 5/5198 6.0 0.13 u u 0.14 604 19.8 9.8 158
W-28i North Plume Intermediate 73-$8 12/18198 2.5 0.52 220 18 10.0
W-28i North Plume Intermediate 73-68 618199 3.6 u 390 19 10.5 280
W-28i North Plume Intermediate 73-88 12/7199 2.5 0.44 270 15.9 9.9 41
P:\Proj\60313.015\dec-99-,.t0J.xls Page 19of21
- ------- - ----- - ----Table 3. Data from Monitoring Wells Used for Evaluation of Monitored Natural Attenuation 6fl/OO
FCX-Statesville Superfund Site OU3
Well Information Nutrients Geochemical Parameters
e
Monitoring Screened Sampling
WeU Zone Well Type Depth Date TOG Phosphate TKN Ammonium Nitrate/ Nitrite Conductivity Temperature pH Eh
(ft) (mg/I.) (mg/I.) (mg/I.) (mg/I.) (mgll) (mmhos) ('C) (uniUess) (mv)
W-29i South Plume lntennediate 88-98 1211/95
W-29i South Plume Intermediate 88-98 511/98 u u u u 8.5 167 17.2 5.3 235
W-29i Oup South Plume lntennediate 88-98 12120/98 1.7 7.4 . 120 17 4.9 247
W-29i South Plume Intermediate 88-98 12120/98 u 7.5 120 17 4.9 239
W-29i South Plume lntennediate 88-98 6/9/99 1.4 5.8 110 16 5.6 228
W-29i Oup South Plume Intermediate 88-98 6/9/99 u 5.7 110 16 5.6 228
W-29i South Plume Intermediate 88-98 1219/99 u 6.0 180 15.4 5.8 331
W-29iDup South Plume Intermediate 88-98 12/9/99 u 6.8
W-30i North Plume lntennediate 37.5-47.5 1211/95
W-30i North Plume Intermediate 37.5-47.5 4/30/98 14 0.078 u 1.2 u 409 18 9.3 -230
W-30i North Plume Intermediate 37.5-47.5 12/19/98 5.4 u 295 16 8.4 162
W-30i North Plume lntennediate 37.5-47.5 1/26/99
W-30i North Plume Intermediate 37.5-47.5 1/27/99
W-30i North Plume Intermediate 37.5-47.5 6/9/99 4.8 u 370 20 8.4 -245
W-301 North Plume lntennediate 37.5-47.5 1218/99 3.7 u 390 14.6 9.3 -353
W-31s North Plume Shallow 5-15 11i1/98
W-31s North Plume Shallow 5-15 11/19/98 u 0.16 u u 125 18 6.9 -68
W-31s Oup North Plume Shallow 5-15 11119/98 u 0.29 u u 125 18 6.9 -63
W-31s North Plume Shallow 5-15 12/16/98 u 0.50 130 18 6.7 142
W-31sc North Plume Shallow 5-15 6f//99 u u 120 16 7.6 257
W-31sc North Plume Shallow 5-15 6110/99 1.4 0.89 110 14.5 6.9 342
W-31s North Plume Shallow 5-15 12/6/99 u 0.95 120 16.9 6.4 188
W-31s Dup North Plume Shallow 5-15 12116/99 u u 0.51 130 18 6.7
W-311 North Plume Intermediate 34-14 11/1/98
W-311 North Plume lntennediate 34-14 11/19/98 u u 0.50 85 17 7.0 -118
W-31i North Plume lntennediate 34-14 12/16/98 u 0.60 80 16 7.0 142
W-311 North Plume Intermediate 34-14 6f//99 u 0.93 210 15 7.7 119
W-31i North Plume Intermediate 34-14 1216/99 1.9 0.56 120 15.6 6.8 107
W-32i South Plume lntennediate 112-132 11/1/98
W-321 South Plume lntennediate 112-132 11/19/98 u u u u 0.59 160 17 8.8 -102
W-321 South Plume Intermediate 112-132 12/1_8/98 1.3 0.74 120 16 8.0 250
W-321 South Plume Intermediate 112-132 6/9/99 2.4 0.53 · 180 16 8.4 214
W-321 South Plume Intermediate 112-132 1217/99 1.8 0.36 150 14.2 8 109
P:\Proj\60313.015\dec-99-!03.xls Page 20 of21
- ---
P:\Proj\60313.015\dee--99-to3.»s
-- -- --- ----Table 3. Data from Monitoring Wells Used for Evaluation of Monitored Natural Attenuation
FCX-Statesville Superfund Site OU3
TABLE FOOT NOTES:
'Monitoring weU W-5s was sampled but not purged; the sample was taken on June 8, 1999, and the NAPS were colleded on June 9, 1999.
'voe data for W-20d from September 1998 are DQL Ill.
~onitoring well W-31s was resampled on 6/10/99 using a slower purge rate.
dAdditional aluminum data can be found in Table 3-4 of the Pre-Design Investigation Report
General Notes:
Data qualifiers are as follows:
B indicates the analyte was detected in a blank sample.
D indicates that the result is from a diluted sample.
J indicates the result is estimated.
• -• indicates that there was not an analysis or measurement performed.
NR indicates the result is not reportable because it was determined as unusable by the data validator.
U indicates that the result was l~ than one-fifth of the contract,equired quantitation Umit (CRQL); the reporting limit precedes the •u• qualifier.
Elevated DOs may be due to pumping the well dry and then collecting water that has been aerated.
lv1onitoring well W-12s was dry during December 1998 sampling.
-
Monitoring wells W-22s and W-12s were dry during the June 1999 sampling; W-17s did not have enough wa~r to purge or sample during the June 1999 sampling.
voe data from December 1999 sampling has been rounded to two (2) significant figures.
-- -
6f7/00
Page 21 of 21
-- ---- --- --- -
Table 4. Analytical Parameters and Weighting for Preliminary Screening of Natural Attenuation•
FCX-Statesville Superfund Site OU3
Most Contaminated
Analysis Zone Concentration Interpretation
Oxygen (DO)• < 0.5 mg/L Tolerated, suppresses the reductive pathway at higher concentrations
> 5 mg/L Not tolerated; however, VC may be oxidized aerobically
Nitrate• < 1 mg/L At higher concentrations may compete with reductive pathway
Iron (II)" > 1 mg/L Reductive pathway possible; VC may be oxidized under Fe(lll)-reducing
conditions
Sulfate' < 20 mg/L At higher concentrations may compete with reductive pathway
Sulfide• > 1 mg/L Reductive pathway possible
Methane• < 0.5 mg/L VC oxidizes
> 0.5 mg/L Ultimate reductive daughter product, VC accumulates
Oxidation reduction potential• <50mV Reductive pathway possible
(ORP) against Ag/AgCI <-100mV Reductive pathway likely.
electrode
pH• 5 <pH< 9 Optimal range for reductive pathway
5 >pH> 9 Outside optimal range for reductive pathway
--
Point
Value
3
-3
2
3
2
3
0
3
1
2
0
-2
Total Organic Carbon (TOC) > 20 mg/L Carbon and energy source; drives dechlorination; can be natural or anthropogenic 2
Temperature• > 20°c At T > 20°C, biochemical process is accelerated 1
Carbon dioxide > 2 x background Ultimate oxidative daughter product 1
Alkalinity > 2 x background Results from interaction between carbon dioxide and aquifer minerals 1
Chloride• > 2 x background Daughter product of organic chlorine 2
Hydrogen > 1 nM Reductive pathway possible; VG may accumulate 3
< 1 nM VC oxidized 0
P:\PROJ\60313.015\dec-99-t04 .doc Page 1 of2
-
- --- ---- - ---- -
Table 4. Analytical Parameters and Weighting for Preliminary Screening of Natural Attenuation•
FCX-Statesville Superfund Site OU3
Analysis
Volatile (VOA) fatty acids
BTEX0
Tetrachloroethene (PCE)
Trichloroethene (TCE)°
Dichloroethene (DCE)°
Vinyl Chloride 0/C)0
1, 1, 1-Trichloroethane (TCA)°
Dichloroethane (DCA)0
Carbon Tetrachloride
Chloroethane0
Ethene/Ethane
Chloroform
Dichloromethane
Concentration in
Most Contaminated Zone Interpretation
> 0.1 mg/L
> 0.1 mg/L
> 0.01 mg/L
> 0.1 mg/L
Intermediates resulting from biodegradation of more complex compounds; carbon
and energy source
Carbon and energy source; drives dechlorination
Material released
Material released
Daughter of product of PCE
Material released
Daughter product of TCE; if amount of cis is greater than 80% of total DCE it is
likely a daughter product. 1,1-DCE can be chemical reaction product ofTCA
Material released
Daughter product of DCE
Material released
Daughter product of TCA under reducing conditions
Material released
Daughter product of DCA or VC under reducing conditions
Daughter product of VC/ethene
Daughter product of VC/ethene
Material released
Daughter product of Carbon Tetrachloride
Material released
Daughter product of Chloroform
-
Point
Value
2
2
0
0
2c
0
2'
0
2'
0
2
0
2
2
3
0
2
0
2
•sased on 'Technical Protocol for Evaluating Natural Attenuation of Chlorinated Solvents in Ground Water" EPN600/R-98/128, September 1998.
0Required analysis.
'Points awarded only if ii can be shown that the compound is a daughter product (i.e., not a constituent of the source NAPL).
P:\PROJ\60313.015\dec-99-t04.doc Page 2 of 2
- -
-------- ----- ------Table 5. Application of USEPA Screening Method to Groundwater Sampling Results from December 1998 and January 1999•
FCX-Statesville Superfund Site OU3
Background North Shallow Plume Area South Shallow Plume Area
W-12s W-17s W-19s W-20s W-31s W-5s W-22s W-24s
Parameter Units (April 1996) Result Pointsb Result Points Result Points Result Points Result Points Result Points Result Points
Oxygen (DO) mg/L 7 4.0 0 NA 0 4 0 0.4 3 NA NA 4.5 0 0.9 0
Nitrate/Ni!Jite mg/L 1.7 27 0 NA 0 0.21 2 0.5 2 1.9 0 9 0 0.6 2
Iron (II) mg/L 0.25 0.6 0 NA 0 0.2 0 2.9 3 NA NA 2.2 3 1.2 3
Manganese (11) mg/L o' 0.3 0 NA 0 0 0 0.3 0 NA NA 0.2 0 0.1 0
Sulfate mg/L 5.6 0 2 31 0 NA 0 10 2 0 2 NA 0 3.3 2
Sulfide mg/L NA NA 0 NA 0 0 0 0 0 0 0 0 0 0 0
Methane mg/L 0 0.0019 0 0.00034 0 0.000097 0 0.0036 0 0.0062 0 0.00026 0 0.051 0
Eh(ORP) mV 305 252 0 NA 0 252 0 142 0 NA 0 230 0 240 0
TOG mg/L 0 0 0 1.3 0 0 0 0 0 5.6 0 0 0 1.2 0
Carbon Dioxide mg/L 24 32 0 NA 0 14 0 26 0 234 60 1 90
Alkalinity mg/L 0 3.9 15 1 33 1 64 7.6 1 0 0 14 1
Chloride mg/L 1.9 29 2 34 2 0 0 5.5 2 5.3 2 6.4 2 29 2
Phosphate mg/L 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
TKN mg/L 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
Ammonium mg/L 0 NA 0 . NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
Conductivity µmhos 43.7 300 0 NA 0 55 0 130 0 NA 0 65 0 NA 0
Temperature "C 19.3 23 NA 0 15 0 16 0 NA 0 16 0 NA 0
pH 4.9 4.4 -2 NA 0 6.9 0 6.7 0 NA• 0 4.7 -2 NA 0
VOA Fatty Acids mg/L 5.7 3 2 3 2 3 2 3 2 6 2 3 2 3 2
PCE mg/L 0 72 0 0.250 0 0.0270 0 0 0 0 0 0.004 0 0 0
TCE mg/L 0 0 0 0.005 2 0.001 2 0 0 0.053 2 0 0 0 0
cis-1,2-DCE mg/L 0 0 0 0 0 0.004 2 0.00004 2 1.6 2 0.002 2 0 0
Vinyl Chloride mg/L 0 0 0 0 0 0 0 0 0 0.05 0 0.0004 2 0 0
Ethene/Ethane mg/L 0 0.0002 0 0.0001 0 0.00001 0 0.0003 0 0.0003 0 0.00002 0 0.00004 0
1,1,1-TCA mg/L 0 0 0 0 0 0 0 0 0 0.065 0 0.0006 0 0 0
1,1-0CA mg/L 0 0 0 0 0 0 0 0 0 0.270 2 0.0006 2 0.0002 2
1,1-DCE mg/L 0 0 0 0.0003 2 0 0 0 0 0.076 2 0 0 0.0001 2
Total Points Awarded (Score): 6 9' 9 17 16. 12 17
p:\PRCJ\60313.015\dec-9S-to5.xls Page 1 of 2
- - - --- ---- --- ------Table 5. Application of USEPA Screening Method to Groundwater Sampling Results from December 1998 and January 1999"
FCX-Statesville Superfund Site OU3
North Intermediate Plume Area South Intermediate Plume Area
Background W-2Bi W-30i W-20i W-31i W-5i W-22i W-29i W-32i
Parameter Units W-12i Result Points Result Points Result Points Result Points Result Points Result Points Result Points Result Points
Oxygen (DO) mg/I. 3.5 2.5 0 0.3 3 1 0 0.6 0 NA NA 0 4 0 0
Nitrate/Nitrite mg/I. 3.1 0.52 2 0 2 0.07 2 0.6 2 0 2 4 0 7.5 0 0.74 2
Iron (II) mg/I. 0.1 0.1 0 0.7 0 0 0 0.1 0 0.2 0 1.9 3 0 0 0 0
Manganese (II) mg/I. NA 0 0 0.1 0 0 0 0.15 0 0 0 0 0 0 0 0.1 0
Sulfate mg/I. 46 24 0 NA 0 13 2 6.6 2 NA NA NA 0 NA 0 10 2
Sulfide mg/I. NA 0 0 0.3 0 0 0 0 0 0 0 0 0 0 0 0 0
Methane mg/I. 0.0022 0.0015 0 0.0014 0 0.0014 0 0.0008 0 0.00056 0 0.0011 0 0.00026 0 0.0005 0
Eh (ORP) mV 22 NA 0 162 0 199 0 142 0 132 0 136 0 239 0 250 0
TOG mg/I. 0 2.5 0 5.4 0 0 0 0 0 0.0 0 1.3 0 0 0 1.3 0
Carbon Dioxide mg/I. 55 NA 0 18 0 16 0 10 0 38 0 100 0 60 0 16 0
Alkalinity mg/I. 31 120 1 140 64 31 0 52 0 45 0 8.7 0 67 1
Chloride mg/I. 31 3.2 0 22 0 36 0 1.5 0 1.3 0 14 0 21 0 1.9 0
Phosphate mg/I. NA NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
TKN mg/I. NA NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
Ammonium mg/I. NA NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
Conductivity µmhos 200 220 0 295 0 190 0 BO 0 120 0 140 0 120 0 120 0
Temperatu.re •c 17 18 0 16 0 15 0 16 0 16 0 19 0 17 0 16 0
pH 5 10 '2 8.4 0 7.6 0 7 0 6.8 0 6 0 4.9 -2 8 0
VOA Fatty Acids mg/I. 0 3 2 9 2 0 0 0 0 3 2 3 2 3 2 3 2
PCE mg/I. 0.002 0.64 0 0.56 0 1.1 0 0.0001 0 0.028 0 0.11 0 0.032 0 0.0004 0
TCE mg/I. 0 0.024 2 0.046 2 0.D75 2 0 0 0.004 2 0.010 2 0.002 2 0.0002 2
cis-1,2-0CE mg/I. 0 0.009 2 0.028 2 0.12 2 0 0 0.01 2 0.14 2 0.007 2 0 0
Vm~ Chlonde mg/I. 0 0 0 0 0 0 0 0 0 0.0003 2 0.003 2 0.0002 2 0 0
Ethene/Ethane mg/I. 0.0003 0.0007 0 0.0006 0 0.0008 0 0.0002 0 0.0005 0 0.00002 0 0.00003 0 0.0002 0
1,1,1-TCA mg/I. 0 0 0 0 0 0 0 0 0 0 0 0.012 0 0 0 0 0
1,1-0CA mg/I. 0.0005 0 0 0 0 0 0 0 0 0.005 2 0.058 2 0.004 2 0 0
1,1-0CE mg/I. 0 0.014 2 0 0 0 0 0 0 0.004 2 0.02 2 0.003 2 0 0
Total Points Awarded (Score): 9 12 9 4 14 15 10 9
'Analytical data used in this table were derived from data presented in Table 3.
bRefer to Table 4 for attenuation point assignment for parameters.
cNA indicates not applicable.
d■o• was entered for results which were not detected above the reporting limit
'Several parameters were not analyzed for.
p:\PROJ\6031 J.015\dec-99--t05.xls Page 2 of2
- - - --- --- -- ----- - - -Table 6. Application of USEPA Screening Method to Groundwater Sampling Results from June 1999•
FCX-Statesville Superfund Site OU3
Background North Sharrow Plume Area South Shallow Plume Area
w.12s• W-17s W-19s W-20s W-31s W-5s W-22s W-24s
Parameter Units (April 1998) Result Pointse ResuH Points Result Points Result Points Result Points Result Points Result Points
Oxygen (DO) mg/L 7.0 NA' 0 4.0 0 3.5 0 1.0 0 1.0 0 NA 0 2.0 0
Nitrate/Nibite mgn.. 1.7 NA 0 0.83 2 0 2 0 2 2.3 0 NA 0 0 2
Iron (II) mg,\. 0.25 NA 0 0.4 0 0.2 0 2.1 3 0.3 0 NA 0 2.0 3
Manganese (II) mg/L O' NA 0 NA 0 0 0 0 0 0.4 0 NA 0 0.3 0
Sulfate mg/L 5.8 NA 0 25 0 0 2 0 2 1.8 2 NA 0 0 2
Sulfide mg/L 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
Methane mg/L 0 NA 0 0.00033 0 0.000074 0 0.00048 0 0.0045 0 NA 0 0.00034 0
Eh (ORP) mV 305 NA 0 226 0 243 0 257 0 296 0 NA 0 204 0
TOC mg,\. 0 NA 0 1.4 0 0 0 0 0 3.6 0 NA 0 1.4 0
Carbon Dioxide mgn.. 24 NA 0 73 40 0 NA 0 105 NA 0 55
AlkaLinity mg/L 0 NA 0 16 31 1 43 9.3 NA 0 17 1
Chloride mg/L 1.9 NA 0 43 2 1.6 0 5.5 2 4.3 2 NA 0 18 2
Phosphate mgn.. 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
TKN mgn.. 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
Ammonium mg,\. 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
Conductivity µmhos 43.7 NA 0 230 0 60 0 120 0 70 0 NA 0 90 0
Temperature 'C 19.3 NA 0 16 0 16 0 16 0 22.5 NA 0 15.5 0
pH 4.9 NA 0 5.5 0 6.1 0 7.6 0 6.6 0 NA 0 5.9 0
VOA Fatty Acids mg,\. 5.7 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
PCE mg,\. 0 NA 0 0.33 0 0.046 0 0 0 0.19 0 NA 0 0.0005 0
TCE mgn.. 0 NA 0 0.0074 2 0.0019 2 0 0 0.057 2 NA 0 0 0
cis-1,2-0CE mg,\. 0 NA 0 0 0 0.0051 2 0 0 1.1 2 NA 0 0 0
V,iyl Chlortde mg/L 0 NA 0 0 0 0 0 0 0 0 0 NA 0 0 0
Ethene/Ethane mg,\. 0 NA 0 0 0 0 0 0 0 0.000135 0 NA 0 0 0
1,1,1-TCA mg/L 0 NA 0 0 0 0 0 0 0 0.094 0 NA 0 0 0
1,1-0CA mgn.. 0 NA 0 0 0 0 0 0 0 0.24 2 NA 0 0 0
1.1-0CE mgn.. 0 NA 0 0 0 0 0 0 0 0.072 2 NA 0 0 0 ---
Total Poln1s Awarded (Score): NA 8 9 10 15 NA 11
P:\PROJ\60313.015\dec-99-tOO.x!s Page1of2
- ------- ----1!!11 c:;;a iiiiil -- --Table 6. Application of USEPA Screening Method to Groundwater Sampling Results from June 1999'
FCX-Statesville Superfund Site OU3
North Intermediate Plume Area South Intermediate Plume Area
Background W-28i W-30i W-20i W-31i W-5i W-22i W-29i W-32i
Parameter Units W-12i Result Points Result Points Result Points Resutt Points Result Points Result Points Result Points Results Points
Oxygen (DO) mg/L 3.0 0.5 0 0.6 0 1.1 0 0.6 0 2.0 0 0.8 0 4.0 0 0.8 0
Nitrale/Nibite mg/I. 3.3 0 2 0 2 0.48 2 0.93 2 0 2 2.9 0 5.8 0 0.53 2
Iron (II) mg/I. 0 0 0 0.4 0 0.1 0 0.8 0 0.4 0 1.6 3 0.1 0 0.1 0
Manganese (11) mg/I. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Sulfate mg/I. 0 29 0 35 0 9.8 2 15 2 19 2 1.3 2 0 2 8.8 2
Sulfide mg/I. NA NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
Methane mg/I. 0.0017 0.00066 0 0.0017 0 0.0016 0 0.0002 0 0.00048 0 0.033 0 0.00033 0 0.00061 0
Eh(ORP) mV -168 280 0 -245 2 227 0 119 0 320 0 145 0 228 0 214 0
TDC mg/I. 0 3.6 0 4.8 0 0 0 0 0 3.6 0 2.4 0 1.4 0 2.4 0
Carbon Dioxide mg/I. 120 NA 0 5 0 20 0 15 0 60 0 85 0 80 0 20 0
Alkalinity mg/I. 32 130 1 130 1 61 0 58 0 51 0 57 0 12 0 62 0
Chloride mg/I. 28 4.3 0 19 0 23 0 2.5 0 2.4 0 9.9 0 15 0 2.6 0
Phosphate mg/I. NA NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA. 0 NA 0
TKN mg/I. NA NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
Ammonium mg/L NA NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
Conductivity µmhos 200 390 0 370 0 210 0 210 0 150 0 170 0 110 0 180 0
Temperature 'C 20 19 0 20 0 16 0 15 0 19 0 16 0 16 0 16 0
pH 6 10.5 -2 8.4 0 7.3 0 7.7 0 7.7 0 6.3 0 5.6 0 8.4 0
VOA Fatty Acids mg/I. 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
PCE mg/I. 2.5 0.25 0 1.1 0 0.44 0 0 0 · 0.048 0 0.086 0 0.05 0 0.00063 0
TCE mg/L 0 0.04 2 0.071 2 0.03 2 0 0 0.0046 2 0.011 2 0.005 2 0.00022 2
cis-1,2-0CE mg/I. 0 0.015 2 0.034 2 0.023 2 0 0 0.0069 2 0.096 2 0.0079 2 0 0
Vinyl Chloride mg/I. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Ethene/Ethane mg/I. 0.000026 0.00096 0 0.00144 0 0.000053 0 0 0 0.000163 0 0.000952 0 0.000041 D 0.00017 0
1,1,1-TCA mg/I. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 D 0 0
1,1-0CA mg/I. 0.0005 0 D 0 D 0 0 0 0 0.0045 2 0.046 2 0.0047 2 0 0
1,1-0CE mg/I. 0 0 0 0 0 0 0 0 0 0.0046 2 0.011 2 0.0044 2 0 0
Total Points Awarded (Score): 5 9 8 4 12 13 10 6
1Analytical data used in this table were derived from data presented in Table 3.
bDue to the unavailability of W-12s data from the June 1999 sampling event background well data are presented from the previous sampnng event
cRefer to Table 4 for attenuation point assignment for parameters.
dNA indicates not applicable.
'·o· was entered for results which were not detected above the reporting limil
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------- -- - - --------Table 7. Application of USEPA Screening Method to Groundwater Sampling Results from December 1999•
FCX-Statesville Superfund Site OU3
Background North Shalk>w Plume Area South Shallow Plume Area
W-12s' W-17s W-19s W-20s W-31s W-5s W-22s W-24s
Parameter Units (April 1998) Result Pointse Result Points Result Points Result Points Result Points Result Points Result Points
Oxygen (DO) mg/L 7.0 NA 0 2.0 0 5 0 1.0 0 1.0 0 NA 0 1.0 0
Nitrate/Nitrite mg/L 1.7 NA 0 1.2 0 0.37 2 0.95 2 2.6 0 5.9 0 0.55 2
Iron (11) mg/L 0.25 NA 0 0.1 0 0.1 0 1.6 3 1.6 3 NA 0 1.5 3
Manganese (II) mglL 0 NA 0 0 0 0.1 0 0.3 0 0.3 0 NA 0 0.1 0
Sulfate mg/L 5.8 NA 0 17 2 1.3 2 3.8 2 2.3 2 1.3 2 0 2
SuWK!e mg/L 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
Methane mglL 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Eh (ORP) mV 305 NA 0 326 0 321 0 188 0 205 0 NA 0 237 0
TOG mglL 0 NA 0 0 0 0 0 0 0 6.4 0 1 0 0 0
Carbon Dioxide mglL 24 NA 0 55 14 0 20 0 85 NA 0 80
Alkalinity mglL 0 NA 0 13 37 39 1 7.8 <1.0 0 14
Chloride mg/L 1.9 NA 0 48 2 2 0 3.1 0 4.7 2 7.3 2 12 2
Phosphate mg/L 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
TKN mglL 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
Ammonium mglL 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
Conductivity µmhos 43.7 490 0 270 0 80 0 120 0 70 0 120 0 130 0
Temperature 'C 19.3 21.1 16.6 0 13.5 0 16.9 0 17.4 16.4 0 13 0
pH 4.9 4.5 ·2 5.4 0 6.6 0 6.4 0 4.9 -2 4.8 ·2 5.8 0
VOA Fatty Acids mg/L 5.7 NA 0 13 2 8.8 2 0 0 13 2 0 0 0 0
PCE mg/L 0 108.7 0 0.42 0 0 0 0 0 0.221 0 0.011 0 0.002 0
TCE mglL 0 0 0 0.011 2 0.0029 2 0 0 0.075 2 0.0002 2 0 0
cis-1,2-0CE mglL 0 0.5097 2 0.022 2 0.008 2 0 0 1.12 2 0.003 2 0.0003 2
Vinyl Chloride nig/L 0 0 0 0 0 0 0 .0 0 0 0 0.00043 2 0 0
Elhene/Elhane mglL 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1,1,1-TCA mglL 0 0 0 0 0 0 0 0 0 0.128 0 0.0008 0 0 0
1,1-DCA mg/L 0 0 0 0 0 0 0 0 0 0.284 2 0.001 2 0.0003 2
1,1-DCE mg/L 0 0 0 0 0 0 0 0 0 0.073 2 0.001 2 0.0002 2
Total Points Awarded (Score): NA 12 11 8 18 12 17
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--- --- ---- --- --- ---Table 7. Application of USEPA Screening Method to Groundwater Sampling Results from December 1999'
FCX-Statesville Superfund Site OU3
North lntem,ediate Plume Area South Intermediate Plume Area
Background W-28i W-30i W-20i W-31i W-5i W-22i W-29i W-32i
Parameter Units W-12i Result Points Result Points Result Points Result Points Result Points Result Points Result Points Results Points
Oxygen (DO) mg/L 4.0 0.8 0 0.9 0 0.8 0 0.6 0 1.5 0 1.0 0 3.0 0 1.0 0
Nitrate/Nitrite mg/L 2.9 0.44 2 0 2 0.71 2 0.56 2 0.26 2 3.2 0 6 0 0.36 2
Iron (II) mg/L 0.3 0 0 0.1 0 0.1 0 0.3 0 2.5 3 3.1 3 0.1 0 0.1 0
Manganese (11) mg/L 0.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Sulfate mg/L 32 14 2 27 0 13 2 9.7 2 18 2 2.8 2 2.3 2 10 2
Sulfide mg/L NA NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
Methane mg/L 0 0 0 0 0 0 0 0 0 0 0 420 3 0 0 0 0
Eh(ORP) mV -90 41 -353 2 -199 2 107 0 100 0 94 0 331 0 109 0
TOC mg/L 1.1 2.5 0 3.7 0 0 0 1.9 0 0.0 0 0.0 0 0 0 1.8 0
Carbon Dioxide mg/L 30 saturated saturated 1 10 0 10 0 20 0 65 1 45 0 8 0
AlkaITnity mg/L 33 120 140 68 1 30 0 56 0 53 0 9.4 0 61 0
Chloride mg/L 33 2.6 0 21 0 35 0 1.7 0 2.2 0 7.9 0 19 0 2.5 0
Phosphate mg/L NA NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
TKN mg/L NA NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
Ammonium mg/L NA NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0 NA 0
Conductivity µmhos 260 270 0 390 0 250 0 120 0 140 0 220 0 180 0 150 0
Temperature 'C 15.8 15.9 0 14.6 0 13.8 0 15.6 0 16.4 0 NA 0 15.4 0 14.2 0
pH 5.7 9.9 -2 9.3 -2 7.4 0 6.8 0 6.5 0 6.2 0 5.8 0 8 0
VOA Fatty Acids mg/L 70 0 0 11 2 13 2 0 0 5.5 2 0 0 5.5 2 83 2
PCE mg/L 2.197 0.307 0 0 0.265 0 0 0 0.055 0 0.065 0 0.052 0 0.001 0
TCE mg/L 0 0.043 2 0.071 2 0.025 2 0 0 0.006 2 0.008 2 0.003 2 0.0003 2
cis-1,2-DCE mg/L 0 0.014 2 O.o3 2 0.019 2 0 0 0.01 2 0.077 2 0.008 2 0 0
Vinyl Chloride mg/L 0 0 0 0 0 0 0 0 0 0 0 0.0 0 0 0 0 0
Ethene/Ethane mg/L 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1,1,1-TCA mg/L 0 0 0 0 0 0 0 0 0 0 0 0.005 0 0 0 0 0
. 1,1-DCA mg/L 0.5859 0 0 0 0 0 0 0 0 0.008 2 0.04 2 0.006 2 0 0
1,1-DCE mg/L 0.1656 0 0 0 0 0 0 0 0 0.007 2 0 2 0.004 2 0 0
Total Points Awarded (Score): 9 10 13 4 17 17 12 8
8Analytical data used in this table were derived from data presented in Table 3.
bDue to the unavailability of W-12s data from the December 1999 sampling event, background well data are presented from a previous sampling event
cRefer to Table 4 for attenuation point assignment for parameters.
dNA indicates not applicable.
"'O" was entered for results which were not detected above the reporting limil
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Table 8. Interpretation of Points Awarded during Screening Process of Natural Attenuation'
FCX-Statesville Superfund Site OU3
Score
Oto 5
6 to 14
15 to 20
>20
Interpretation
Inadequate evidence for biodegradation of chlorinated organics
Limited evidence for biodegradation of chlorinated organics
Adequate evidence for biodegradation of chlorinated organics
Strong evidence for biodegradation of chlorinated organics
'Taken from "Technical Protocol for Evaluating Natural Attenuation of Chlorinated Solvents in Ground
Water", EPA/600/R-98/128, September 1998.
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