NCD003200383_20030909_Koppers Co. Inc._FRBCERCLA SAP QAPP_Groundwater Sampling-OCR

North Carolina
Department of Environment and Natural
Resources
Michael F. Easley, Governor
William G. Ross Jr., Secretary
Dexter R. Matthews, Director
Ms. Beverly Hudson
Remedial Project Manager
Superfund Branch
Waste Management Division
US EPA Region IV
61 Forsyth Street, 11 th Floor
Atlanta, Georgia 30303
September 9, 2003
RE: Proposed Groundwater Sampling Work Plan for Natural Attenuation Assessment
Former Koppers Industries, Inc. NPL Site
Morrisville, Wake County, North Carolina
Dear Ms. Hudson:
The Superfund Section of the North Carolina Department of Environment and Natural Resources
(NC DENR) has received and reviewed Proposed Groundwater Sampling Work Plan for Natural
Attenuation Assessment for the Formi,:r Koppers Industries, Inc. National Priorities List (NPL)
Site. The Superfund Section offers the attached comments.
The Superfund Section of the NC DEJ:-IR appreciates the opportunity to comment on this
document. If you have any questions or comments, please feel free to contact me at (919) 733-
2801, extension 349.
Attachment
Sincerely,
:i'L-filtf~JIH~ 1 J:v;d B. Mattison, CHMM
Environmental Engineer
NC Superfund Section
CC: Mr. Michael Helbling, Beazer East, Inc.
1646 Mail Service Center, Raleigh, North Carolina 27699-1646
Phone: [phone] \ FAX:: [phone] \ Internet: wwv.•.enr.state.nc.us
AN EQUAL OPPORTUNITY\ AFFIRMATIVE ACTION EMPLOYER -50% RECYCLED/ JO% POST CONSUMER PAPER
Ms. Beverly Hudson
September 9, 2003
Page I
• •
Proposed Groundwater Sampling Work Plan for Natural
Attenuation Assessment
Former Koppers Industries, Inc. NPL Site
1. Although this work plan details the sampling to be performed in the evaluation of the
feasibility of enhanced natural biodegradation, please note that much greater detail should
be provided in the future regarding the natural attenuation of pentachlorophenol (PCP)
and all other constituents of concern (COCs) at the Site. Topics to be discussed include
the pathways of natural attenuation of PCP and all other COCs, the parent and daughter
products, organisms responsible for the natural attenuation of PCP and all other COCs,
relevant research conducted on PCP and COC degradation, groundwater fate and
transport modeling, timeframe for achieving North Carolina groundwater standards, etc.
Additionally, please note that approval of this work plan and the sampling of groundwater
for natural attenuation parameters does not relieve the responsible party from
responsibility for operation and maintenance activities associated with the existing
treatment system, namely operation of the system, quarterly and semiannual sampling,
etc.
2. The frequency of sampling for natural attenuation parameters was not detailed in this
document. Please revise the document to include a frequency of sampling of natural
attenuation parameters. It is suggested that the natural attenuation parameter sampling be
conducted in conjunction with quarterly groundwater monitoring activities in order to
account for temporal variations as well as to identify any relationships exhibited between
the natural attenuation parameters and the concentrations of the constituents of concern.
3. Please revise Table 1 -Proposed Groundwater Analytical Parameters and Methods to
include provisions for the analysis of PCP and all other COCs, all daughter products from
the degradation of PCP and all other COCs, ethane, ethene, total organic carbon (TOC)
and chloride.
•
August 18, 2003
Ms. Beverly Hudson
Remedial Project Manager
USEPA-Region IV
North Superfund Remedial Branch
Waste Management Division
I 00 Alabama Street
Atlanta, Georgia 30303
RE: Proposed Groundwater Sampling Work Plan for Natural Attenuation Assessment
Former Koppers Company Site, Morrisville, North Carolina
RETEC Project No. BEAZ?-03624-103
Dear Ms. Hudson:
On behalf of Beazer East, Inc. (Beazer), RETEC North Carolina, Inc. (RETEC) is submitting this
proposed groundwater sampling work plan for assessing geochemical evidence of natural attenuation
processes at the former Koppers Company site (Site) in Morrisville, North Carolina. Pentachlorophenol
(PCP), the principal constituent of concern (COC) at the Site, is potentially biodegradable by naturally-
occurring soil and groundwater microorganisms under either aerobic or anaerobic conditions. Since the
completion of remedial actions at the Sile have resulted in the reduction of groundwater PCP
concentrations to levels only slightly greater than the Remedial Goals, enhanced natural biodegradation
may provide a more cost-effective approach to achieving the groundwater cleanup goals than continued
operation of the existing groundwater extraction and treatment system.
As a first step in evaluating the feasibility of enhanced natural biodegradation at the Site, it is important to
identify the existing geochemical conditions that are indicative of naturally-occurring biodegradation
pathways. Therefore, this work plan has been developed to provide an appropriate assessment of the Site
groundwater geochemistry.
Groundwater Geochemistry Sampling
The objective of the proposed groundwater sampling event is to collect geochemical data that can be
compared to locations of former source areas, current distributions of dissolved COi, and groundwater
gradients. A total of 16 monitoring wells will be sampled and will consist ofC-0IB, C,09B, C-I0A, C-
I0B, C-1 IB, C-12A, C-138, C-14B, C-ISB, C-27A, C-27B, C-28A, C-29B, PW-I, M-04, and C-14A.
The locations of these wells are shown in Figure 1.
After water levels in all wells have been gauged, groundwater sampling will commence by purging the
wells selected for the natural attenuation assessment using a low-stress, low-flow purging technique. The
low-flow approach for well purging and groundwater sampling is generally described in the United Stales
Environmental Protection Agency (USEPA) Region 4 Enviro11111e11/u/ !11vesligations S!andard Operating
Procedures and Qualify Assurance Manual (EISOPQAM) (USEPA, 2001 ), and more specifically by Puls
and Barcelona (1996). As specified by this procedure, dedicated tubing will be connected to a peristaltic
pump and will be lowered lo the approximate mid-point of the screened interval of a given well. Water
will then be pumped from the well al a·slow rate (generally 100-500 mL/min) lo minimize drawdown of
the water level in the well and suspension of any fine-grained sediment, and to avoid aeration of the water
being sampled. The pump discharge tubing will be connected lo a llow-through cell containing probes
for the continuous measurement of temperature;' pl-( specific conductivity; turbidity~ DO~ and
Ms. Beverly Hudson
August 18, 2003
Page 2
• •
oxidation/reduction potential (ORP) ~,sing a YSI Model 610-D Water Quality Logger ( or equivalent
instrument) which will be calibrated before use according to the manufacturer's instructions. Purging will
continue until parameters stabilize (less than 10 percent variation between successive readings),
indicating that stagnant water has been removed from the well screen interval and that the water being
sampled is chemically representative of the water within the formation. This technique facilitates the
accurate measurement of volatile and reduced parameters (e.g., VOCs, DO, ORP, methane, Fe'2, Mn-2,
s·'), and minimizes the introduction of sediment into samples, which can lead to falsely high
concentrations of organic constituents that tend to sorb onto particulate matter.
At the conclusion of purging, groundwater samples will be collected for analysis of the following
chemical parameters:
Table 1 Proposed Groundwater Analytical Parameters and Methods
Analyte Method
Alkalinitv ✓ SM18 2320B
Nitrate , USEPA 9056 £~00
Ferrous iron ,,, SM18 3500-Fe D Phenanthroline Method r la ,
Total iron USEPA 6010
Dissolved mannanese USEPA 6010B
Total manaanese USEPA 6010B
Sulfate , USEPA 9056
Sulfide USEPA 9030B/9034
Methane -11 ..... -,I RSK 175 sw ~ i,o ....... J.r.: j
Pentachloro□henol USEPA 8270C-SIM
-rvc
Data Evaluation C,l,.._\_,,..·1!<-
The geochemical and groundwater elevation data will be plotted on the site map to identify concentration
distributions that are related to groundwater flow directions and the presence of residual COi. These
distributions will provide an indication of whether COi biodegradation is occurring through aerobic or
anaerobic pathways.
RETEC recommends holding a meeting with representatives of the North Carolina Department of
Environment and Natural Resources (NCDENR), USEPA Region IV, Beazer, and RETEC to discuss this
proposed work plan and potential groundwater remedial alternatives for the Site. We will call you to
identify a mutually-agreeable schedule and location for this meeting. In the meantime, please do not
hesitate to call me at 919-484-2200 if you have any questions or comments regarding this proposed scope
of work.
Sincerely,
::f?2 ';];~
Mark S. Westray
Principal Technical Consultant
Enclosure
cc:· D. Mattison-NCDENR
M. Helbling-Beazer
L. Kclmar-RETEC
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PROPOSED NATURAL ATTENUATION
ASSESSMENT MONITORING WELLS
LAYOUT: FIGURE 1
• •
Letter of Transmittal
The RETEC Group, Inc.
1822 Easl NC Highway 54
5uile 100
Durham, NC 27713
.RETEC
919.484. 2200 Phone
919.484. 8100 Fax
www.retec.com
TO: Dave Mattison DATE: 7/16/03 ----------------TIN Contoured Groundwater Potentiometric
RE: Surface Maps PROJECT NO: BEAZ7-03624-103
PLEASE FIND: ~ Attached D Under separate cover via:
D Copy of Letter D Change Order D Drawings/Figures D Plans/Specs
D Samples D Other:
Copies Date No. Descriotion
7/16/03 TIN Contoured Groundwater Potentiometric I
D For Approval D Approved as Submitted
~ For Your Use D Approved as Noted
D As Requested D Returned for Corrections
D For Review & Comment
Remarks:
Surface Maos
D Resubmit
D Submit
D Return
D Other:
Should you have any questions, please feel free to call me.
Sincerely,
The RETEC Group, Inc.
Stefanie Young
cc: M. Helbling-Beazer
R. Bauer-RETEC
___ Copies for Approval
___ Copies for Distribution
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•
April 23, 2003
Ms. Beverly Hudson
Remedial Project Manager
USEPA-Region IV
North Superfund Remedial Branch
Waste Management Division
100 Alabama Street
Atlanta, Georgia 30303
•
.RETEC
RETEC N<1tth C1mlin,1, Inc
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RE: Request for Modifications to the Groundwater Sampling Program at the
Former Koppers Company Site, Morrisville, North Carolina
RETEC Project No.: BEAZ7-03624-103
Dear Ms. Hudson:
RETEC North Carolina, Inc. (RETEC). on behalf of Beazer East, Inc. (Beazer), is submitting this request
to modify the groundwater monitoring frequency and the type of groundwater sampling equipment used at
the former Koppers Company Site in Morrisville, North Carolina (Site). Beazer herein requests that in the
second half of 2003, the quarterly monitoring schedule be changed to semiannual, and the use of stainless-
steel bailers be.changed to dedicated-Teflon® bailers.
RETEC has discussed these modifications with Mr. David Mattison of the North Carolina Department of
Environment and Natural Resources during a telephone conversation in February 2002. Mr. Mattison
recommended that we have sufficient data (at least 3 years of data) to support our requests. This data has now
been compiled, and as shown on the enclosed summary table, the number of constituents detected in the
groundwater sampled from this Site (as well as the concentrations of those constituents) appear to have
stabilized; warranting a reduced sampling frequency. In addition, the non-reactive nature of Teflon® bailers
makes them a suitable and more cost effective alternative to the labor-intensive stainless-steel bailers currently
used.
As stated above, RETEC hopes to implement these modifications during the second half of2003; therefore, we
request that you provide us with a letter approving these modifications on or before June 30, 2003.
RETEC thanks you for your time and consideration of this request. Please do not hesitate to contact Michael
Helbling, Beazer Environmental Manager at [phone] or Rita Bauer at [phone] should you have
questions or comments regarding this letter, or the Site in general.
Sincerely,
RETEC North Carolina, Inc.
Stefanie D. Young
Environmental Scientist
Enclosure
eh-fV!, ~cdt-0
Rita M. Bauer
Groundwater Sampling Program Manager
cc: D. Mattison-North Carolina Department of Environment and Natural Resources
M. Helbling-Beazer East, Inc.
•
Historical Groundwater Sampling Analytical Results
Beazer -Morrisville, NC
ROD Analyte Name Units Groundwater Standard•
2,4-DICHLOROPHENOL "n/L
PENTACHLOROPHENOL "n'L
1,2,3,4,6,7,8-HoCDD nn/L
1,2,3,4,6,7,8-HpCDF oa/L
1,2,3,4,7,8,9-HoCDF nn/L
1,2,3,4, 7,8-HxCDD nn/L
1,2,3,4, 7,8-HxCDF pq/L
1,2,3,6, 7,8-HxCDD nn/L
1,2,3,6, 7,8-HxCDF nn/L
1,2,3,7,8,9-HxCDD nn/L
1,2,3, 7,8,9-HxCDF nn/L
1,2,3, 7,8-PeCDD pq/L
1,2,3, 7,8-PeCDF nn/L
2,3,4,6,7,8-HxCDF nn/L
2,3,4, 7 ,8-PeCDF nn/L
2,3,7,8-TCDD nn/L
2,3,7,8-TCDF pq/L
OCDD nn/L
OCDF nn/L
TOTAL HPCDD oa/L
TOTAL HPCDF nn/L
TOTALHXCDD nn/L
TOTAL HXCDF nn/L
TOTAL PECDD nn/L
TOTAL PECDF pq/L
TOTAL TCDD nn/L
TOTAL TCDF nn/L
Notes:
---indicates not analyzed
B indicates compound was also detected in the blank.
Bold Font indicates detection.
D indicates compound was diluted.
20
1
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
DRY indicates insufficient groundwater volume in well to produce sample.
J indicates estimated result.
NA indicates not applicable.
pg.IL -picograms per liter
REA indicates sample was reanalyzed.
Red Font indicates exceedance.
*ROD -Record of Decision Groundwater Cleanup Standard
U indicates compound was analyzed for, but not detected.
µg/L -micrograms per liter
Sampling Note:
Well C-01 B was inadvertanly sampled for dioxins/furans in May 2002.
•
Mar-00
0.2 u
1 u
---
---
---
...
...
...
...
...
---
...
---
---
...
---
...
...
...
...
...
...
...
---
---
...
---
C-01B
Mar-01 May-02 Feb-03 Mar-00
0.2 u 0.22 u 0.2 u 0.2 u
1 u 1.1 u 0.98 u 1 u
... 20 u ---. ..
---1.6 u ------
... 1.7 u ------
. .. 2 u ... ---
... 1.6 u ... . ..
. .. 2.2 u ... . ..
... 1.6 u ... . ..
---2 u ---...
... 1.7 u ... . ..
---3.4 u ------
---1.8 u ... ---
---1.7 u ---...
---1.8 u ------
... 1.6 u ... . ..
---1.2 u ---. ..
... 360 ... . ..
---7.9 u ------
... 29 ---. ..
---3.7 u ------
... 2.2 u ---...
... 1.7 u ... . ..
---3.4 u ---...
... 1.9 u ... ---
---1.6 u ---...
... 1.2 u ... ---
C-09B C-10A C-10A DUP C-10A C-10B
Mar-01 Mar-02 Feb-03 Mar-00 Mar-01 Mar-02 Feb-03 Mar-00 Jun-00
0.2 u 0.2 u 0.19 u 0.2 u 0.2 u 0.2 u 0.2 u 0.19 u 0.2 u 0.2 u
1 u 1 u 0.96 u 1 u 1 u 1 u 1 u 0.96 u 1 u 1 u
------ --------------- ---------
--------------------- ---------
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' 1 of 8
I
•
Historical Groundwater Sampling Analytical Results
Beazer -Morrisville, NC
ROD Analyte Name Units Groundwater Standard•
2,4-DICHLOROPHENOL "n/L
PENTACHLOROPHENOL "nil
1,2,3,4,6,7,8-HpCDD nn/L
1,2,3,4,6,7,8-HpCDF oa/L
1,2,3,4, 7,8,9-HoCDF nn/L
1,2,3,4, 7,8-HxCDD no/L
1,2,3,4, 7,8-HxCDF oa/L
1,2,3,6, 7,8-HxCDD nn/L
1,2,3,6,7,8-HxCDF oa/L
1,2,3, 7,8,9-HxCDD nn/L
1,2,3, 7,8,9-HxCDF nn/L
1,2,3,7,8-PeCDD oa/L
1,2,3, 7,8-PeCDF nn/L
2,3,4,6,7,8-HxCDF D□/L
2,3,4,7,8-PeCDF nn/L
2,3,7,8-TCDD nn/L
2,3,7,8-TCDF oa/L
OCDD nn/L
OCDF no/L
TOTALHPCDD oa/L
TOTAL HPCDF nn/L
TOTALHXCDD D□/L
TOTALHXCDF oa/L
TOTAL PECDD nn/L
TOTAL PECDF D□/L
TOTAL TCDD nn/L
TOTAL TCDF nn/L
Notes:
---indicates not analyzed
B indicates compound was also detected in the blank.
Bold Font indicates detection.
D indicates compound was diluted.
20
1
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
DRY indicates insufficient groundwater volume in well to produce sample.
J indicates estimated result.
NA indicates not applicable.
pg/L -picograms per liter
REA indicates sample was reanalyzed.
Red Font indicates exceedance.
~ROD -Record of Decision Groundwater Cleanup Standard
U indicates compound was analyzed for, but not detected.
µg/L -micrograms per liter
Sampling Note:
Well C-01 B was inadvertanly sampled for dioxins/fur ans in May 2002.
•
C-10B
0.2 u
1 u
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
------
---
---
---
---
C-10B DUP C-10B
Sep-OD Mar-01 Jun-01 Mar-02 Feb-03
0.2 u 0.2 u 0.2 u 0.2 u 0.2 u
1 u 1 u 1 u 1 u 1 u
---------------
---------------
---------------
---------------
---------------
---------------
---------------
------------------------------
---------------
---------------
---------------
---------------
---------------
---------------
---------------
---------------
---------------
---------------
---------------
---------------
---------------
---------------
---------------
---------------
2 of 8
C-11 B C-12A C-13B
Jun-OD Mar-01 Mar-02 Feb-03 Mar-OD Jun-01 Mar-02 Feb-03 Mar-OD Mar-01
0.2 u 0.38 0.2 u 0.33 0.2 u 0.2 u 0.2 u 0.2 u 0.2 u 0.2 u
1 u 1 u 1 u 0.95 u 1 u 1 u 1 u 0.98 u 1 u 1 u
------------------------------
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------------------------------
------------------------------
------------------------------------------------------------
------------------------------------------------------------
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•
Historical Groundwater Sampling Analytical Results
Beazer -Morrisville, NC
ROD Analyte Name Units Groundwater Standard*
2,4-DICHLOROPHENOL ,,n,L
PENTACHLOROPHENOL ,,n,L
1,2,3,4,6,7,8-HpCDD oo/L
1,2,3,4,6,7,8-HpCDF oa/L
1,2,3,4,7,8,9-HPCDF nn/L
1,2,3,4,7,8-HxCDD oa/L
1,2,3,4,7,8-HxCDF oa/L
1,2,3,6, 7,8-HxCDD nn/L
1,2,3,6,7,8-HxCDF oa/L
1,2,3,7,8,9-HxCDD nn/L
1,2,3,7,8,9-HxCDF oa/L
1,2,3,7,8-PeCDD Dail
1,2,3,7,8-PeCDF nn/L
2,3,4,6,7,8-HxCDF oa/L
2,3,4,7,8-PeCDF nn/L
2,3,7,8-TCDD oa/L
2,3,7,8-TCDF oa/L
OCDD nn/L
OCDF oa/L
TOTALHPCDD nn/L
TOTAL HPCDF on/L
TOTALHXCDD oa/L
TOTAL HXCDF nn/L
TOTAL PECDD oa/L
TOTAL PECDF oa/L
TOTAL TCDD nn/L
TOTAL TCDF oa/L
Notes:
--indicates not analyzed
B indicates compound was also detected in the blank.
Bold Font indicates detection.
D indicates compound was diluted.
20·
1
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
DRY indicates insufficient groundwater volume in well to produce sample.
J indicates estimated result.
NA indicates not applicable.
pg.IL -picograms per liter
REA indicates sample was reanalyzed.
Red Font indicates exceedance.
·ROD -Record of Decision Groundwater Cleanup Standard
U indicates compound was analyzed for, but not detected.
µg/L -micrograms per liter
Sampling Note:
Well C-01 B was inadvertanly sampled for dioxins/furans in May 2002.
•
C-13B
Mar-02 Feb-03 Mar-00 Sep-00 Dec-00
0.2 u 0.19 U 0.2 u 0.53 U 0.71 u
1 u 0.95 U 16 21 3.6 u
------ ---2530 ---
------ ---537 --------- ---36.1 ---
---------22.4 J ---
---------17.4 J ---
---------138 ---
---------25.9 J ---
---------70.2 ---
------ ---7.64 u ---
---------11.1 J ---
------ ---2.46 U ---
------ ---20.4 J ---
------ ---2.41 u ---
---------2.13 u ---
------ ---1.64 u ---
--- --- ---23200 B ---
------ ---1930 ---
--- --- ---3990 ---
------ ---1850 ---
---------481 ---
------ ---555 ---
---------11.1 ---
------ ---90.1 ---
--- --- ---2.13 U ---
------ ---1.64 u ---
C-14A C-14B
Mar-01 Jun-01 Aug-01 Dec-01 Mar-02 May-02 Aug-02 Dec-02 Feb-03 Mar-00 Jun-00
0.2 U 0.23 u 0.2 u DRY DRY DRY DRY DRY DRY 0.2 u 0.2 u
4.4 1.4 180 D DRY DRY DRY DRY DRY DRY 5.9 1 u
1100 ---55 ---DRY ---DRY ---DRY ---150
97 ---7.8 u ---DRY ---DRY ---DRY ---34
15 U ---0.98 u ---DRY ---DRY ---DRY ---2.1 u
12 u ---1.7 u ---DRY ---DRY ---DRY ---4.8 u
7.3 U ---1.5 u ---DRY ---DRY ---DRY ---3.2 u
43 J ---2.7 u ---DRY ---DRY ---DRY ---6.8 u
7.3 U ---1.4 u ---DRY ---DRY ---DRY ---2.4 u
77 ---1.6 u ---DRY ---DRY ---DRY ---4.2 u
8.6 UJ ---1.6 u ---DRY ---DRY ---DRY ---3.3 u
9.2 U ---2.1 u ---DRY ---DRY ---DRY ---9.8 u
7.2 U ---1.4 u ---DRY ---DRY ---DRY ---5 U
8.1 UJ ---1.6 u ---DRY ---DRY ---DRY ---3.3 u
7.1 u ---1.3 u ---DRY ---DRY ---DRY ---5.1 u
3.2 U ---1.3 u ---DRY ---DRY ---DRY ---4.1 u
3 U ---0.94 u ---DRY ---DRY ---DRY ---2.8 u
3900 ---660 ---DRY ---DRY ---DRY ---1000
260 ---56 J ---DRY ---DRY ---DRY ---24 u
1400 ---92 ---DRY ---DRY ---DRY ---220
240 ---16 U ---DRY ---DRY ---DRY ---34
180 ---3 U ---DRY ---DRY ---DRY ---11 u
26 U ---2.1 u ---DRY ---DRY ---DRY ---4.8 u
9.2 U ---2.1 u ---DRY ---DRY ---DRY ---9.8 u
7.2 U ---1.5 u ---DRY ---DRY ---DRY ---5.1 u
3.2 U ---1.3 u ---DRY ---DRY ---DRY ---4.1 u
3 U ---0.94 u ---DRY ---DRY ---DRY ---2.8 U
3of 8
'
•
Historical Groundwater Sampling Analytical Results
Beazer -Morrisville, NC
ROD Analyte Name Units Groundwater Standard*
2,4-DICHLOROPHENOL 11n1L
PENTACHLOROPHENOL 11n/L
1,2,3,4,6,7,8-HpCDD oa/L
1,2,3,4,6,7,8-HoCDF nn/L
1,2,3,4, 7,8,9-HpCDF nn/L
1,2,3,4, 7,8-HxCDD oa/L
1,2,3,4, 7,8-HxCDF nn/L
1,2,3,6, 7,8-HxCDD on/L
1,2,3,6, 7,8-HxCDF pg/L
1,2,3,7,8,9-HxCDD nn/L
1,2,3, 7,8,9-HxCDF oa/L
1,2,3,7,8-PeCDD nn/L
1,2,3,7,8-PeCDF on/L
2,3,4,6, 7,8-HxCDF oa/L
2,3,4,7,8-PeCDF nn/L
2,3, 7 ,8-TCDD oa/L
2,3, 7 ,8-TCDF nn/L
OCDD nn/L
OCDF oa/L
TOTALHPCDD nn/L
TOTAL HPCDF on/L
TOTALHXCDD pg/L
TOTAL HXCDF nn/L
TOTAL PECDD oa/L
TOTAL PECDF oa/L
TOTAL TCDD nn/L
TOTAL TCDF oa,L
Notes:
---indicates not analyzed
B indicates compound was also detected in the blank.
Bold Font indicates detection.
D indicates compound was diluted.
20
1
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
DRY indicates insufficient groundwater volume in well to produce sample.
J indicates estimated result.
NA indicates not applicable.
pg/L -picograms per liter
REA indicates sample was reanalyzed.
Red Font indicates exceedance.
·ROD -Record of Decision Groundwater Cleanup Standard
U indicates compound was analyzed for, but not detected.
µg/L -micrograms per liter
Sampling Note:
Well C-01 8 was inadvertanly sampled for dioxins/furans in May 2002.
•
Sep-00 Dec-00
0.4 u 0.2 u
15 8.9 D ... ---
... ---... ...
... ---
... ...
... ...
---...
---...
... ...
... ...
... ---
---...
---...
... ...
... ...
... ...
... ---
... ...
... ...
... ...
... ...
... ...
... ---
... ...
... ---
C-14B
Mar-01 Jun-01 Aug-01 Dec-01
0.2 u 0.2 u 0.2 u 0.2 u
12 1.4 1 u 1 u
10 u ... 6.2 u ---
4.4 u ... 2 u ...
4.7 u ... 0.97 u ...
5.1 u ... 1.5 u ...
5.7 u ... 1.1 u ---
6 u ---1.6 u ...
5.6 u ... 1.1 u ---
5.3 u ---1.4 u ...
6.7 UJ ---1.2 u ...
10 u ... 2.9 u ...
2.3 u . .. 1.6 u ---
6.3 UJ ... 1.2 u ---
2.3 u ... 1.6 u ...
5.7 u ... 1.2 u ...
3.2 u ... 1 u ...
82 J ---55 J ...
9 u ... 6.6 u ...
10 u ---6.2 u ...
4.7 u ... 2 u ...
6 u ... 1.6 u ...
6.7 u . .. 1.2 u ...
10 u ... 2.9 u ---
2.3 u . .. 1.6 u ---
5.7 u ... 1.2 u ---
3.2 u . .. 1 u ---
4 qt 8
C-15B C-27A
Mar-02 May-02 Feb-03 Mar-00 Mar-01 Mar-02 Feb-03 Mar-00 Mar-01 Mar-02 Feb-03
0.23 u 0.22 u 0.19 u 0.2 u 0.2 u 0.2 u 0.21 u 0.2 u 0.2 u 0.2 u 0.2 u
1.2 u 1.1 u 0.96 u 1 u 1 u 1 u 1 u 1 u 1 u 1 u 1 u
... ... ... ... ... . .. ... ... ... ... . ..
... ... ... ------... ------... . .. ---
... ... ... ------. .. ---... . .. ... ---
... ---... ... ---... ... ... ... . .. ---
... ... ... ------. .. ---. .. ---... ...
... ... ---... ---. .. ... ... ... ... . ..
... ------... ---... ... ... . .. ... ...
... ... ---... ---... ... ... ... . .. ---
... ... ... ---... ---... . .. ---... ---
... ... ... ---... ... ... --- ---
. .. ---
---... ... ... ... ... ... ... ... ... . ..
---... ... ... ... ... ---... . .. ... ...
... ... ... ... ... ... ---... ... ---. ..
... ---... ... --- ---
... ... . .. ... ...
... ... ---... ... ---... ... ... ... . ..
... ... ---... ... ... ... ---. .. ... ...
... ------... ------... ... ... ... . ..
... ... ---... ... ---... ... . .. ... ...
... ... ... ... ... ... ... ---... ---. ..
... ------... ------... ... . .. ... ...
... ... ... ... ... ... ---... . .. ... ---
... ... ... ---... . .. ---... ... ... ---... ... ... ... ... ... ... ------... ...
---... ... ... ... ... ------... ---. ..
... ... ... ---... ... ... ... ---. .. ...
•
Historical Groundwater Sampling Analytical Results
Beazer -Morrisville, NC
ROD Analyte Name Units Groundwater Standard•
2,4-DICHLOROPHENOL o,n/L
PENTACHLOROPHENOL o,n/L
1,2,3,4,6,7,8-HnCDD nn/L
1,2,3,4,6,7,8-HoCDF nn/L
1,2,3,4,7,8,9-HoCDF nn/L
1,2,3,4, 7,8-HxCDD nn/L
1,2,3,4,7,8-HxCDF nn/L
1,2,3,6, 7,8-HxCDD nn/L
1,2,3,6, 7,8-HxCDF nn/L
1,2,3, 7,8,9-HxCDD nn/L
1,2,3, 7,8,9-HxCDF pq/L
1,2,3,7,8-PeCDD nn/L
1,2,3,7,8-PeCDF nn/L
2,3,4,6,7,8-HxCDF nn/L
2,3,4,7,8-PeCDF nn/L
2,3,7,8-TCDD pq/L
2,3,7,8-TCDF nn/L
OCDD nn/L
OCDF nn/L
TOTAL HPCDD nn/L
TOTAL HPCDF nn/L
TOTAL HXCDD nn/L
TOTAL HXCDF nn/L
TOTAL PECDD nn/L
TOTAL PECDF nn/L
TOTAL TCDD nn/L
TOTAL TCDF pq/L
Notes:
---indicates not analyzed
B indicates compound was also detected in the blank.
Bold Font indicates detection.
D indicates compound was diluted.
20
1
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA.
NA
NA
NA
NA
NA
NA
DRY indicates insufficient groundwater volume in well to produce sample.
J indicates estimated result.
NA indicates not applicable.
pg/L -picograms per liter
REA indicates sample was reanalyzed.
Red Font indicates exceedance.
*ROD -Record of Decision Groundwater Cleanup Standard
U indicates compound was analyzed for, but not detected.
µg/L -micrograms per liter
Sampling Note:
Well C-01 B was inadvertanly sampled for dioxins/furans in May 2002.
•
Jun-00
0.2 u
1 u
...
...
...
...
...
...
..•
...
...
...
•..
...
...
...
...
...
...
...
...
...
...
...
...
...
...
C-27B C-28A
Mar-01 Mar-02 Feb-03 Mar-00 Mar-01 Mar-02
0.2 u 0.2 u 0.19 u 0.2 u 0.2 u 0.2 u
1 u 1 u 0.96 u 1 u 1 u 1 u
... ... ... ... ... ...
... ... ... ... . .. ...
... .•. ... ... . .. ...
... ... . .. ... . .. ...
... ... ... ... . .. ...
... ... . .. ... ... ...
... ... ... ... ... ...
... ... . .. ... ... ...
... ... ... ... . .. ...
... ... ... ... ... ...
... ... ... ... ... ...
... ... ... ... ... ...
•.. ... . .. ... ... ...
... ... ... ... . .. ...
... ... . .. ... ... ...
... ... ... ... ... ...
... ... ... ... ... ...
... ... ... ... ... ...
... ... ... ... ... ...
... ... ... ..• ... ...
... ... . .. ... ... ...
... ... ... ... ... ...
... ... . .. ... ... ...
... ... ... ... ... ...
... ... . .. ... ... ...
5 of 8
C-28B C-29B C-29B REA C-29B
Feb-03 Jun-00 Mar-00 Jun-00 Sep-00 Dec-00 Mar-01 Jun-01
0.19 u 0.2 u 0.2 u 0.22 0.2 u 4 u 0.6 1 u 0.21
0.97 u 1 u 9.3 110 D 51 D 80 51 D 58 56 D
. .. ... ... . .. 9.8 u 344 ... 19 u ...
... ... ... . .. 3.4 u 55.1 ... 6.4 u ...
. .. ... ... . .. 3.1 u 6.68 u ... 1.9 u ...
... ... ... . .. 4.8 u 14.5 J ... 4 u ...
..• ... . .. . .. 3 u 2.25 u ... 4.1 u ...
... ... ... . .. 4.6 u 15 J ... 4.6 u ...
... ... ... ... 2.2 u 2.39 u ... 4.1 u ...
... ... ... ... 4.2 u 4.23 u ... 4 u ...
. .. ... ... . .. 3.1 u 3.68 u ... 4.8 UJ ...
... ... ... ... 7.4 u 2.18 u ... 4.8 u ...
. .. ... ... . .. 4.1 u 2.24 u ... 5 u ...
... ... ... ... 3.1 u 2.56 u ... 4.5 UJ ...
... ... ... . .. 4.2 u 2.19 u ... 5 u ...
. .. ... ... ... 3.2 u· 1.21 u . .. 1.8 u ...
... ... ... ... 2.2 u 0.819 u ... 2 u ...
. .. ... ... . .. 88 3650 B ... 200 ...
... ... ... ... 6.5 u 249 ... 21 u ...
. .. ... ... ... 9.8 u 606 . .. 19 u ...
... ... ... ... 3.4 u 245 ... 8.9 u ...
. .. ... ... . .. 4.8 u 54.4 ... 4.6 u ...
... ... ... . .. 3.1 u 62.4 ... 4.8 u . ..
... ... ... ... 16 u 2.18 u ... 4.8 u . ..
... ... ... . .. 4.2 u 6.23 ... ' 5 u ...
... ... ... ... 3.2 u 1.21 u ... 1:8 u . ..
... ... ... . .. 2.2 u 0.819 u ... 2 u ...
•
Historical Groundwater Sampling Analytical Results
Beazer -Morrisville, NC
ROD Analyte Name Units Groundwater Standard•
2,4-DICHLOROPHENOL 11n/L
PENTACHLOROPHENOL 11n/L
1,2,3,4,6, 7,8-HoCDD nn/L
1,2,3,4,6, 7 ,8-HoCDF nn/L
1,2,3,4,7,8,9-HpCDF nn/L
1,2,3,4,7,8-HxCDD nn/L
1,2,3,4, 7,8-HxCDF nn/L
1,2,3,6, 7,8-HxCDD oa/L
1,2,3,6, 7,8-HxCDF nn/L
1,2,3, 7,8,9-HxCDD nn/L
1,2,3, 7,8,9-HxCDF nn/L
1,2,3,7,8-PeCDD nn/L
1,2,3,7,8-PeCDF oa/L
2,3,4,6,7,8-HxCDF nn/L
2,3,4,7,8-PeCDF nn/L
2,3,7,8-TCDD nn/L
2,3,7,8-TCDF nn/L
OCDD nn/L
OCDF nn/L
TOTALHPCDD nn/L
TOTALHPCDF oa/L
TOTALHXCDD nn/L
TOTAL HXCDF nn/L
TOTAL PECDD oa/L
TOTAL PECDF nn/L
TOTAL TCDD nn/L
TOTAL TCDF nn/L
Notes:
---indicates not analyzed
B indicates compound was also detected in the blank.
Bold Font indicates detection.
D indicates compound was diluted.
20
1
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
DRY indicates insufficient groundwater volume in well to produce sample.
J indicates estimated result.
NA indicates not applicable.
pg/L -picograms per liter
REA indicates sample was reanalyzed.
Red Font indicates exceedance.
*ROD -Record of Decision Groundwater Cleanup Standard
U indicates compound was analyzed for, but not detected.
µg/L -micrograms per liter
Sampling Note:
Well C-01 B was inadvertanly sampled for dioxins/furans in May 2002.
•
Aua-01
0.45
17 D
4.2 u
2.6 u
2.8 u
9.8 u
3 u
11 u
2.9 u
9.3 u
3.7 u
3.8 u
1.9 u
3.4 u
1.9 u
1.8 u
1.7 u
7.3 u
5.7 u
4.2 u
2.8 u
11 u
3.7 u
4.3 u
3.1 u
1.8 u
1.7 u
C-29B
Dec-01 Mar-02 May-02 Aua-02
0.2 u 2 u 0.2 u 0.2 u
41 D 27 41 D 39 D
14 u ---12 u ---
2.7 u ---2.7 u ---
1.5 u ---1.5 u ---
1.2 u ---1.8 u ---
0.88 u ---1.1 u ---
1.6 u ---1.9 u ---
0.47 u ---1.1 u ---
1.1 u ---1.7 u ---
0.57 u ---1.2 u ---
2 u ---2.7 u ---
0.64 u ---1.6 u ---
0.52 u ---1.2 u ---
0.62 u ---1.6 u ---
0.82 u ---1.4 u ---
0.97 u ---1.1 u ---
64 J ---99 u ---
6.9 u ---6.1 u ---
14 u ---12 u ---
4.6 u ---3.7 u ---
1.6 u ---2.2 u ---
1.3 u ---1.2 u ---
3.3 u ---2.7 u ---
1 u ---1.8 u ---
0.82 u ---1.4 u ---
0.97 u ---1.1 u ---
C-29B C-29B DUP M-04
Dec-02 Feb-03 Mar-00 Sep-00 Mar-01 Mar-02 May-02 Aug-02 Dec-02 Feb-03
1 u 0.97 u 0.95 u 0.2 u 0.22 u 0.22 u DRY DRY DRY DRY DRY
45 28 32 1 u 1.1 u 1.1 u DRY DRY DRY DRY DRY
9.4 u --------------- --------- ------
3.6 u ------------------ ------ ---
---
1.2 u ------------------------------
0.51 u --------- ---------------------
0.79 u ------------------------------
0.6 u --------------- ------------ ---
1.1 u --------------- ------------ ---
0.62 u ------------------------------
0.48 u ------------ --- ---------------
1.6 u --------- --------------- ------
1.1 u --------- ---
------------ ------
1.1 u ------------------------------
1.1 u ------------ ------------------
0.81 UJ --------- ------------------ ---
1.1 UJ --------------------- ---------
140 --------- --------- ------------
19 u ------------------------------
22 u ------------------ ------------
7.8 u ------------ ------------------
1 u ------------ --- ------ ---------
1.1 u --------------------------- ---
1.6 u ------------ ------------------
1.1 u --------------------- ---------
0.81 UJ --------- ---------------------
1.1 UJ --------- ------------ ---------
6 of 8
•
Historical Groundwater Sampling Analytical Results
Beazer -Morrisville, NC
ROD Analyte Name Units Groundwater Standard•
2,4-DICHLOROPHENOL "n/L
PENTACHLOROPHENOL "n/L
1,2,3,4,6,7,8-HpCOD on/L
1,2,3,4,6,7,8-HpCDF □a/L
1,2,3,4,7,8,9-HPCDF nn/L
1,2,3,4, 7,8-HxCDD □a/L
1,2,3,4,7,8-HxCDF pg/L
1,2,3,6, 7,8-HxCDD nn/L
1,2,3,6,7,8-HxCDF □a/L
1,2,3,7,8,9-HxCDD nn/L
1,2,3,7,8,9-HxCDF on/L
1,2,3, 7,8-PeCDD □a/L
1,2,3, 7,8-PeCDF nn/L
2,3,4,6,7,8-HxCDF □a/L
2,3,4,7,8-PeCDF nn/L
2,3,7,8-TCDD on/L
2,3,7,8-TCDF □a/L
OCDD nn/L
OCDF □a/L
TOTAL HPCDD □a/L
TOTAL HPCDF nn/L
TOTAL HXCDD □a/L
TOTAL HXCDF nn/L
TOTALPECDD nn/L
TOTAL PECDF □a/L
TOTAL TCDD nn/L
TOTAL TCDF on/L
Notes:
---indicates not analyzed
B indicates compound was also detected in the blank.
Bold Font indicates detection.
D indicates compound was diluted.
20
1
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
DRY indicates insufficient groundwater volume in well to produce sample.
J indicates estimated result.
. NA indicates not applicable.
pg/L -picograms per liter
REA indicates sample was reanalyzed.
Red Font indiC:ates exceedance.
*ROD -Record of Decision Groundwater Cleanup Standard
U indicates compound was analyzed for, but not detected.
µg/L -micrograms per liter
Sampling Note:
Well C-01 B was inadvertanly sampled for dioxins/furans in May 2002.
•
PW-01
0.2 u
36 OJ
---
---
---
---
---
---
---
------
---
---
---
---
---
---
------
---
---
---
---
---
---
---
---
PW-01 -DUP PW-01 PW-01 -DUP PW-01
Mar-00 Jun-00 Sep-00
0.2 u 0.2 u 0.2 u 1 u
50 D 20 DJ 22 DJ 30
---5.8 u 4.4 u 13.9 u
---2.6 u 1.9 u 2.88 u
---2.8 u 2.1 u 4.39 u
---4.2 u 4.1 u 5.1 u
---2.9 u 2.5 u 2 U
---4.1 u 3.9 u 5.78 u
---2.1 u 1.8 U 2.34 u
---3.7 u 3.6 U 5.11 u
---3 U 2.6 U 3.31 u
---7.2 u 7.4 u 2.48 u
---3.6 u 3.7 u 1.72 u
---3 U 2.6 U 2.09 u
---3.7 u 3.7 u 1.9 u
---3.3 u 3.8 u 1.24 u
---2 u 2.4 u 1.67 u
---8.9 u 7.3 u 69.2 u
---5.4 u 5.7 u 7.7 u
---5.8 u 4.4 u 13.9 u
---2.8 u 2.1 u 3.54 u
---4.2 u 4.1 u 5.33 U
---3 U 2.6 u 2.4 u
---12 u 15 u 2.48 U
---4.1 u 3.7 u 1.81 u
---3.3 U 3.8 u 1.24 U
---2 U 2.4 u 1.67 u
7 of 8
PW-01 PW-01 -DUP PW-01 PW-01 -DUP PW-01 PW-01 -OUP PW-01
Dec-00 Mar-01 Jun-01 Auq-01
0.2 u 0.2 u 0.2 u 0.2 u 0.2 u 0.2 u 0.2 u
16 OJ 14 D 33 DJ 34 D 24 DJ 30 D 35 D
------4.2 u 4.8 u ------2.1 u
------3.8 u 12 u ------1.3 U
------4.1 u 7.6 u ------1.3 U
------5.9 u 16 u ------1.7 u
------4.3 UJ 12 u ------1.6 u
------6.7 u 18 u ------1.8 u
------4.3 U 12 u ------1.5 u
------5.9 u 16 U ------1.6 u
------5.1 UJ 14 UJ ------1.7 u
------11 u 7.7 u ------2.6 u
------5 u 5.9 u ------1.3 u
------4.8 UJ 13 UJ ------1.6 u
------5 UJ 5.9 u ------1.3 u
------5.6 u 5.3 u ------1.3 u
------5.8 u 4.3 u ------0.96 u
------9.7 UJ 13 u ------17 u
------11 u 9.4 u ------3.6 u
------4.2 u 4.8 u ------2.1 u
------4.1 u 12 u ------1.3 U
------6.7 u 18 U ------1.8 U
------5.1 u 14 u ------1.7 u
------11 u 7.7 u ------2.6 U
------5.6 u 9.7 u ------1.3 U
------5.6 u 5.3 u ------1.3 U
------5.8 u 4.3 u ------0.96 U
•
Historical Groundwater Sampling Analytical Results
Beazer -Morrisville, NC
ROD Analyte Name Units Groundwater Standard•
2,4-DICHLOROPHENOL ua/L
PENTACHLOROPHENOL un/L
1,2,3,4,6,7,8-HoCDD nn/L
1,2,3,4,6, 7 ,8-HpCDF pa/L
1,2,3,4, 7,8,9-HpCDF oa/L
1,2,3,4, 7,8-HxCDD nn/L
1,2,3,4, 7,8-HxCDF pa/L
1,2,3,6, 7,8-HxCDD nn/L
1,2,3,6, 7,8-HxCDF nn/L
1,2,3, 7,8,9-HxCDD nn/L
1,2,3, 7,8,9-HxCDF nn/L
1,2,3, 7,8-PeCDD nn/L
1,2,3,7,8-PeCDF nn/L
2,3,4,6,7,8-HxCDF nn/L
2,3,4,7,8-PeCDF pa/L
2,3,7,8-TCDD nn/L
2,3,7,8-TCDF nn/L
OCDD nail
OCDF nn/L
TOTALHPCDD nn/L
TOTAL HPCDF nn/L
TOTALHXCDD nn/L
TOTAL HXCDF nn/L
TOTAL PECDD nn/L
TOTAL PECDF nn/L
TOTAL TCDD . pq/L
TOTAL TCDF nn/L
Notes:
---indicates not analyzed
B indicates compound was also detected in the blank.
Bold Font indicates detection.
D indicates compound was diluted.
20
1
NA
NA
NA·
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
DRY indicates insufficient groundwater volume in well to produce sample.
J indicates estimated result.
NA indicates not applicable.
pg/L -picograrns per liter
REA indicates sample was reanalyzed.
Red Font indicates exceedance.
*ROD -Record of Decision Groundwater Cleanup Standard
U indicates compound was analyzed for, but not detected.
µg.11... -micrograms per liter
Sampling Note:
Well C-01 B was inadvertanly sampled for dioxins/furans in May 2002.
•
PW-01 -DUP
Aug-01
0.2 u
29 D
2.1 u
0.76 U
0.8 u
1.4 u
1.3 u
1.5 u
1.3 U
1.4 u
1.4 u
2.2 u
1.2 u
1.4 u
1.1 u
1.5 U
0.89 U
7.6 U
1.8 U
2.1 u
0.8 U
1.5 u
1.4 U
2.2 U
1.5 U
1.5 u
0.89 u
PW-01 PW-01 -DUP PW-01 PW-01 -DUP PW-01
Dec-01 Mar-02
0.2 u 0.2 u 0.2 u 0.2 u 0.2 u
27 DJ 25 D 4.2 D 7.6 18 D
9.9 u 4.2 u ------3.3 u
1.8 u 2.1 u ------2.8 u
2.2 u 2.5 u ------3.2 u
0.67 U 3.5 u ------3.4 u
0.85 u 3.1 u ------2.5 u
0.9 u 3.9 u ------3.7 u
0.54 u 2.9 u ------2.5 u
0.62 u 3.5 U ------3.3 u
0.65 U 3.5 u ------2.7 u
1.7 u 5.5 U ------7.2 u
0.85 U 3.2 u ------4.3 u
0.6 u 3.2 u ------2.7 u
0.85 u 3.2 u ------4.4 u
0.61 u 2.3 u ------5.2 u
1 u 1.8 u ------2.9 u
32 u 15 u ------14 u
5.2 u 4.8 u ------4.4 u
9.9 u 4.2 u ------3.3 u
3.7 u 2.5 u ------3.2 u
1.1 u 3.9 u ------3.7 u
0.85 u 3.5 u ------2.7 u
2.5 u 5.5 u ------7.2 u
0.97 u 3.7 u ------5 u
1.4 u 2.3 u ------5.2 u
1 u 1.8 u ------2.9 u
8 of 8
PW-01 -DUP PW-01 PW-01 -DUP PW-01 PW-01 -DUP PW-01 PW-01 -DUP
May-02 Aug-02 Dec-02 Feb-03
0.22 u 0.2 u 0.22 u 0.39 U 0.39 U 0.6 u 0.59 U
20 D 21 D 16 D 22 D 22 D 21 19
3.2 u ------1.9 u 2.6 u ------
2 U ------2.1 u 2 u ------
2.4 u ------0.79 U 0.81 u ------
2.8 U ------0.89 U 0.57 u ------
2 U ------1.8 u 1.7 u ------
3.1 u ------0.94 u 1.1 u ------
2 U ------1.1 u 0.74 u ------
2.7 u ------1.1 u 0.39 u ------
2.2 u ------1 u 0.63 u ------
4.6 U ------1.6 U 1.4 u ------
2.8 U ------1 u 0.97 u ------
2.2 u ------0.95 U 0.87 u ------
2.8 U ------0.94 u 0.93 U ------
3 u ------0.69 UJ 0.93 UJ ------
1.7 u ------1 UJ 1 u ------
21 u ------8,7 u 7.8 U ------
3.5 u ------2.8 U 3.2 u ------
3.2 u ------1.9 U 2.6 U ------
2.4 u ------2.1 u 2 u ------
3.1 u ------1.1 u 1.1 u ------
2.2 u ------1.8 U '1.7 u ------
6.4 u ------2.4 U 1.4. U ------
2.8 u ------1 u 0.97 u ------
3 U ------0.69 UJ 0.93 UJ ------
1.7 u ------1 UJ 1 u ------