DRC-2011-007577 - 0901a0688028c79f

State of Utah
GARY R. HERBERT
Governor
GREG BELL
Lieutenant Governor
Department of
Environmental Quality
Amanda Smith
Executive Director
DIVISION OF RADIATION CONTROL
Rusty Lundberg
Director
MEMORANDUM
TO:
FROM:
DATE:
SUBJECT:
File
Phil Goble
March 24, 2011
Review of the 4th Quarter, 2010 (dated February 28, 2011) Routine Groundwater -
Monitoring Report. Groundwater Discharge Permit (Permit) UG370004 - Denison Mines
(USA) Corp. (DUSA) White Mesa Mill, Blanding, Utah
This is a summary of the 4*^ Quarter (October - December), 2010 sampling events and all accelerated
monitoring during the quarter as documented in the February 28, 2011 DUSA Report, cited above. After
review of the 4"^ Quarter, 2010 Report, DRC staff fmdings are as follows 1) The DUS A 4'''-Quarter, 2010
Groundwater Monitoring Report was received by its respective due date (March 1). 2) The Ground Water
Compliance Limit (GWCL) for Field pH was exceeded in well MW-12, MW-15, MW-25, and MW-29 for
the first time. 3) The GWCLs for Selenium in well MW-3 and Uranium in well MW-5 were exceedeid for
the first time. 4) DUSA failed to collect a sample for TDS in samples MW-26, MWT31, and MW-65 for the
December 2010 accelerated monitoring event. 5) DUSA failed to collect a sample for uranium in wells
MW-25 for the December accelerated monitoring event. 6) During the analysis of the 4* Quarter, 2010
monitoring event, mercury was not analyzed within the 28 day holding time requirement in 11 samples. 7)
Certain QA/QC sample data problems are apparent. 8) Summary of the apparent violations is also provided
below. •
LO Accelerated Monitoring and POC Wells Exceeding GWCL
When a monitoring well has a pollutant that exceeds a GWCL set forth in Table 2 ofthe Permit it is in
Probable Out of Compliance (POOC) status. DUSA is then required to immediately initiate accelerated
sampling of that pollutant (see Permit, Part I.G.I). When monitoring wells have parameters that have
exceeded the GWCL two or more consecutive times they are: in Out of Compliance (OOC) status (see
Permit, Part I.G.2). The Background Groundwater Quality Reports (dated October 2007 and April 30,
2008) were approved by the DRC. The Background Quality Reports were approved with the January 20,
2010 Permit Modification, hi the Permit Modification, new GWCLs were established; therefore, all
groundwater samples collected after January 20, 2010 will be subject to the new GWCLs.
In the tables listed below are monitoring wells with parameters currently in POOC (normal font) or OOC
(in bold and italics) status.
168 North 1950 West • Salt Lake City, UT
Mailing Address: P.O. Box 144850 • Salt Lake City, UT 84114-4850
Telephone [phone] • Fax (801) 533^097 • T.D.D. (801) 536^414
www.deq.utah.gov
Printed on 100% recycled paper
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Table 1 - Wells Monitored Quarterly Accelerated to Monthly Monitoring
Well Class *Position Parameter Date of First
Exceedance of
GWCL
Date Accelerated
Monitoring First
Required
MW-11 Class II water D-3 Manganese
Tetrahydroftiran (THF)
February 2010
February 2010
May 2010
May 2010
MW-14 Class III water D-4A Field pH February 2010 May 2010
MW-25 Class II water C-3 Uranium
Field pH
September 2010
November 2010
December 2010
March 2011
MW-26 Class III water C-2
Field pH
Nitrate + Nitrite (as N)
Chloroform
Uranium
Chloride
Dichloromethane
TDS
February 2010
February 2010
February 2010
February 2010
February 2010
April 2010
September 2010
May 2010
May 2010
May 2010
May 2010
May 2010
June 2010
December 2010
MW-30 Class II water D-2 Nitrate -h Nitrite (as N)
Selenium
February 2010
April 2010
May 2010
June 2010
MW-31 Class III water D-2 Nitrate + Nitrite (as N)
TDS
February 2010
September 2010
May 2010
Deciember 2010
* D = Down-gradient; U = Up-gradient; C = Cross-gradient; 1,2,3,4A,4B = Cell #
Wells Monitored Semi-annually Accelerated to Quarterly Monitoring ,
Well Class *Position Parameter
Date of First
Exceedance of
GWCL
Date Accelerated
Monitoring First
Required
MW-3 Class III water b-4A
Selenium
Field pH
Fluoride
2"" Quarter 2010
2"^* Quarter 2010
2"" Quarter 2010
3'''Quarter 2010
3'" Quarter 2010
3'^^ Quarter 2010
MW-3A Class III water D-4A
Field pH
Sulfate
> TDS
Selenium
2"'Quarter 2010
2"'^ Quarter 2010
2"^* Quarter 2010
4"^ Quarter 2010
3''''Quarter 2010
3'^ Quarter 2010
3'^ Quarter 2010
Quarter 2011
MW-5 Class II Water D-3 Uranium 4"^ Quarter 2010 1''Quarter 2011
MW-12 Class III water D-3 Selenium
Field pH
2"''Quarter 2010
4* Quarter 2010
3''Quarter 2010
Quarter 2011
MW-15 Class III water D-4A Field pH 4"* Quarter 2010 Quarter 2011
MW-18 Class III water U-l
Thallium
Field pH
Sulfate
TDS
V Quarter 2010
March 2010
2"^ Quarter 2010
2"^^ Quarter 2010
3'^^ Quarter 2010
3'"*^ Quarter 2010
3'^ Quarter 2010
3'" Quarter 2010
MW-19 , Class III water U-l Field pH 2"''Quarter 2010 3''Quarter 2010
MW-23. Class III water D-3 Field pH 2"^ Quarter 2010 3'''Quarter 2010
MW-24 Class III water D-1
Cadmium
Thallium
Field pH
2"" Quarter 2010
2"''Quarter 2010
2"^^ Quarter 2010
3''Quarter 2010
3'^^ Quarter 2010
3'^^ Quarter 2010
MW-27 Class III water U-l Nitrate+Nitrite (asN) 2"'Quarter 2010 3'''Quarter 2010
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Sulfate
TDS
Chloride
2"' Quarter 2010
r'Quarter 2010
Quarter 2010
3'" Quarter 2010
3'''Quarter 2010
3'''Quarter 2010
MW-28 Class III water D-1 Field pH
Chloride
2"''Quarter 2010
2"^^ Quarter 2010
3''Quarter 2010
3'''Quarter 2010
MW-29 Class III water D-2 FieldpH 4"" Quarter 2010 Quarter 2011
MW-32 Class III water C-2 Gross Alpha
Field pH
2"' Quarter 2010
2"''Quarter 2010
3'''Quarter 2010
3''* Quarter 2010
* Z) = Down-gradient; U = Up-gradient; C = Cross-gradient; 1,2,3,4A 4B = Cell #
Some ofthe parameters listed in the above table were not found to be in excess of their respective GWCL
during the 4* Quarter, 2010 monitoring event. The following wells have parameters currently in POOC or
OOC status that did not exceed their respective GWCL (last time parameter above GWCL in parenthesis)
during the 4'*'Quarter, 2010 sampling event:
MW-3A
MW-11:
MW-18:
MW-19:
MW-25:
MW-26:
MW-27:
MW-30:
MW-31:
MW-32:
; Sulfate (2"^^ Qtr 2010) and TDS (2"^ Qtr 2010)
THF (r^ Qtr. 2010)
Field pH (2"^* Qtr 2010), Sulfate (2"'^ Qtr 2010), and TDS (2"^^ Qtr 2010)
Field pH(2"'^ Qtr 2010)
Uranium (3'" Qtr 2010)
Nitrate + Nitrite (as N) (1'' Qtr. 2010), Uranium (3''' Qtr 2010), and TDS (3'^^ Qtr 2010),
Sulfate (2"^^ Qtr 2010) and TDS (2"^* Qtr 2010)
Sulfate (August 2010)
Sulfate (3'" Qtr 2010)
Gross Alpha (2"''Qtr 2010)
DUSA has previously stated that the data used to calculate a GWCL for field pH in the Background Report
was actually Lab pH and not Field pH. This was verified by the DRC during review of the background
reports; however, because a GWCL based on Lab pH is more conservative than Field pH, the DRC
accepted DUSA's proposed GWCLs for pH. In a letter dated February 1, 2011 DUSA proposed a plan to
correct the GWCLs for pH. DUSA will base revised GWCLs for pH on Field pH collected in monitoring
events since 2005. DUSA plans to submit the revised Field pH GWCLs by the end of the 2"'' quarter of
2011. After DRC approval of revised GWCLs for Field pH, Table 2 ofthe Permit will be^ipdated in a
future Permit Modification.
Each well with a parameter in accelerated status is described in detail below. Time concentration charts for
each parameter in OOC status is included as Attachment 1.
Well Sample Date Parameter GWCL Sample Result
2/10/2010
4/28/2010
134 ug/L
137 fig/L
MW-11
8/25/2010
10/20/2010
11/11/2010
12/15/2010
Manganese 131.29 \ig/L 138 ^g/L
141|ig/L
133 ug/L
158jig/L
2/10/2010 Tetrahydroftiran (THF) 11.5|Lig/L 12 ug/L
Manganese - well MW-11 didn't have any parameters in accelerated status prior to the January 20, 2010
Permit Modification. The February 2010 manganese result of 134 |ig/L was slightly above the GWCL
(131.29 |ig/L) and put manganese in accelerated status. The December 2010 result of 158 |ig/L is the new
Page 4
historic high for manganese at well MW-11 since groundwater monitoring began in the 1^* Quarter of2005.
The previous high of 107 )ig/L was observed in the 4*^ Quarter of 2006 and the 1Quarter of 2007. Since
well MW-11 had two consecutive (1'^ & 2"'' Qtr, 2010) manganese resuhs above the GWCL of 134 \xg/h, it
is in OOC status for manganese.
THF - well MW-11 didn't have any parameters in accelerated status prior to the January 20,2010 Permit
Modification. THF had only been observed in well MW-11 one time before the Quarter, 2010
monitoring event (3.2 ug/L in 2"'' Quarter, 2009). Since the initial exceedances of 12 |ig/L, all other THF
samples in well MW-11 have been below the GWCL of 11.5 |ig/L; therefore, well MW-11 is in POOC ,
status for THF.
DUSA has previously argued that PVC well casing solvents and glues are the source of the THF detected
in monitor wells MW-1, MW-3, MW-5, and MW-12; however, they have not made the same argument for
wellMW-11.
WeU Sample Date Parameter GWCL Sample Result
2/2/2010 6.46 s.u.
4/21/2010 6.29 s.u.
5/21/2010 6.36 s.u.
MW-14 6/16/2010 Field pH 6.5 -8.5 s.u. 6.45 s.u.
8/25/2010 6.48 s.u.
11/10/2010 6.37 s.u.
12/15/2010 6.47 s.u.
Field pH - well MW-14 had not previously been in accelerated status for Field pH before the January 20,
2010 Permit Modification. Since sampling began under the revised Permit, DUSA has exceeded the
GWCL for Field pH in well MW-14 in seven of ten sampling events; therefore, well MW-14 is in OOC
status for Field pH.
Well Sample Date Parameter GWCL Sample Result
MW-25 9/8/2010 Uranium 6.5 ug/L 6.57 ug/L MW-25 11/10/2010 Field pH 6.5-8.5 s.u. 6.36 s.u.
Well MW-25 didn't have any parameters in accelerated status prior to the January 20, 2010 Pennit
Modification as well MW-25 was a "new well" and didn't have GWCLs established until Executive
Secretary approval of the April 30, 2008 New Wells Background Report; The Background Report was
approved with the January 20, 2010 Permit Modification.
Uranium - DUSA exceeded the Uranium GWCL of 6.5 \ig/L in well MW-25 in the 3''' Quarter, 2010;
therefore, well MW-25 is in POOC status for Uranium. The result of 6.57 \ig/L in the 3''' Quarter, 2010
was the historic high for Uranium at well MW-25 since sampling began in the 2"'' Quarter 2005.
Field pH - During the January 20, 2010 Permit Modification a GWCL was set for Field pH in well MW-25
at 6.5 - 8.5 s.u. The result of 6.36 s.u. in September 2010 is actually the lowest result for Field pH at well
MW-25 since groundwater monitoring began in the Quarter, of 2005. The November 2010 Field pH
result is the first exceedance in well MW-25; therefore, well MW-25 is in POOC status for Field pH.
Page 5
Well Sample Date Parameter GWCL Sample Result
2/2/2010 6.59 s.u.
5/24/2010 6.36 s.u.
7/21/2010 6.45 s.u.
8/16/2010
9/16/2010 FieldpH 6.74-8.5 s.u. 6.39 S.U.
6.60 s.u.
10/20/2010 6.61 s.u.
11/15/2010 6.49 s.u.
12/15/2010 6.45 s.u.
2/2/2010
4/22/2010 Nitrate + Nitrite (as N) 0.62 mg/L 1.3 mg/L
2 mg/L
2/2/2010
4/22/2010
700 }ig/L
1,700 ^g/L
5/24/2010 • 800^g/L
6/16/2010 940 ug/L
7/21/2010
8/16/2010 Chloroform 70 \xg/L 900 ^g/L
2,800 ^g/L
9/16/2010 2,100 ^g/L
MW-26 10/20/2010
11/15/2010
12/15/2010
1,000 }ig/L
1,900 jig/L
1,400 ug/L
4/22/2010 9.9 ug/L
7/21/2010
8/16/2010
9/16/2010
10/20/2010
Dichloromethane
12 ug/L
24jig/L
45^g/L
5.5 \ig/L
11/15/2010 16 ug/L
2/2/2010
4/22/2010
8/16/2010 Uranium 41.8 ^ig/L
58.7^g/L
66.7 ug/L
71.8 ug/L
9/16/2010 72.7jig/L
2/2/2010 72 mg/L
5/24/2010
9/16/2010 Chloride 58.31 mg/L 80 mg/L
64 mg/L
11/15/2010 48 mg/L
9/16/2010 TDS 3,284.19 mg/L 3,440 mg/L
Field pH - well MW-26 has not previously been in accelerated status for Field pH before the January 20,
2010 Permit Modification. Since sampling began under the revised Permit, DUSA has exceeded the
GWCL for Field pH in well MW-26 in eight of 10 sampling events; therefore, well MW-26 is in OOC ;
status for Field pH.
Nitrate + Nitrite (as N) - well MW-26 has not previously been in accelerated status for Nitrate + Nitrite
(as N). Since sampling began under the revised Permit, DUSA exceeded the GWCL for Nitrate + Nitrite
(as N) in well MW-26 for two consecutive sampling events (r^-& 2"^^ Qtr, 2010); therefore, well MW-26 is
in OOC status for Nitrate + Nitrite (as N). ^
Chloroform - well MW-26 is a pumping well for the chloroform plume. Chloroform was in accelerated
status before the issuance of the January 20, 2010 Permit Modification. Because well MW-26 is associated
with the Chloroform Plume, the Chloroform GWCL at well MW-26 was set at the Utah Ground Water
Quality Standard (GWQS) or 70 |xg/L. Since sampling began under the revised Pemiit, DUSA has
Page 6
exceeded the GWCL for Chloroform in well MW-26 in all ten sampling events; therefore, well MW-26 is
in OOC status for Chloroform.
Dichloromethane - well MW-26 is a pumping well for the chloroform plume. Dichloromethane was in
accelerated status before the issuance of the January 20, 2010 Permit Modification. Because well MW-26
is associated with the Chloroform Plunie and Dichloromethane is a daughter product of Chloroform, the
GWCL for Dichloromethane at well MW-26 was set at the Utah Ground Water Quality Standard (GWQS)
or 5 )ig/L. Since sampling began under the revised Permit, DUSA has exceeded the GWCL for
Dichloromethane in well MW-26 in seven of ten sampling events; therefore, well MW-26 is in OOC status
for Dichloromethane.
Uranium - well MW-26 was in accelerated status for Uranium before the issuance of the January 20, 2010
Permit Modification. DUSA exceeded the uranium GWCL (41.8 )ag/L) for two consecutive sampling
events (1'' & 2"^ Qtr, 2010); therefore, well MW-26 is in OOC status for Uranium.
Chloride - since sampling began under the revised Permit, DUSA has exceeded the GWCL for Chloride in
well MW-26 in four sampling events, however, none of the events were consecutive; therefore^ well MW-
26 is in POOC status for Chloride. The December 30, 2009 Nitrate Contamination Investigation Report
(Figure 4) did not include well MW-26 as part of the Chloride Plume, but it did show the plume adjacent to
well MW-26. Therefore, it is possible the plume has moved into well MW-26.
TDS - well MW-26 has not previously been in accelerated status for TDS. During the January 20, 2010
Permit Modification a GWCL was set for TDS in well MW-26 at 3,284.19 mg/L. The result of 3,440 mg/L
in September 2010 was the highest result for TDS at well MW-26 since groundwater monitoring began in
the 1 Quarter, of 2005. The September 2010 TDS result was the first exceedance in well MW-26;
therefore, well MW-26 is in POOC status for TDS.
Well Sample Date Parameter GWCL Sample Result
2/9/2010 16.1 mg/L
4/27/2010 15.8 mg/L
5/24/2010 17 mg/L
6/15/2010 15.3 mg/L
MW-30
7/21/2010
8/24/2010
9/14/2010
10/19/2010
11/9/2010
12/14/2010
Nitrate + Nitrite (as N) 2.5 mg/L 16 mg/L
16 mg/L
15 mg/L
15 mg/L
15 mg/L
16 mg/L
4/27/2010
8/24/2010 Selenium 34 ^ig/L 35.3 ^g/L
35.6 jig/L
Nitrate + Nitrite (as N) - well MW-30 is associated with the Nitrate + Nitrite (as N) plume; therefore, the
GWCL for Nitrate + Nitrite was set at the fi-action of the GWQS, i.e., 2.5 for Class II aquifer in the January
20, 2010 Permit Modification. Since sampling began under the revised Permit, DUSA has exceeded the
GWCL for Nitrate + Nitrite (as N) in well MW-30 in all ten sampling events; therefore, well MW-30 is in
OOC status for Nitrate + Nitrite (as N).
Selenium - well MW-30 has not previously been in accelerated status fpr Selenium. DUSA exceeded the
Selenium GWCL (34 ^g/L) for two consecutive sampling events (1'* Qtr & August, 2010); therefore, well
MW-30 is in bOC status for Selenium.
Page 7
Well Sample Date Parameter GWCL Sample Result
2/9/2010 21.7 mg/L
4/20/2010 22.5 mg/L
5/21/2010 23 mg/L
6/15/2010 21.1 mg/L
MW-31
7/21/2010
8/24/2010
9/13/2010
10/19/2010
11/9/2010
12/14/2010
Nitrate + Nitrite (as N) 5 mg/L 20 mg/L
22 mg/L
21 mg/L
20 mg/L
20 mg/L
20 mg/L
9/13/2010 TDS 1,320 mg/L 1,330 mg/L
Nitrate + Nitrite (as N) - well MW-31 is associated with the Nitrate + Nitrite (as N) plume; therefore, the
GWCL for Nitrate + Nitrite was set at the fraction ofthe GWQS, i.e., 5.0 for Class III aquifer in the
January 20, 2010 Permit Modification. Since sampling began under the revised Permit, DUSA has
exceeded the GWCL for Nitrate + Nitrite (as N) in well MW-31 in all ten sampling events; therefore, well
MW-31 is in OOC status for Nitrate + Nitrite (as N).
TDS - well MW-31 has not previously been in accelerated status for TDS. During the January 20, 2010
Permit Modification a GWCL was set for TDS in well MW-31 at 1,320 mg/L. The result of 1,330 mg/L in
September 2010 was the highest resuh for TDS at well MW-31 since groundwater monitoring began in the
1^' Quarter, of 2005. The September 2010 TDS result was the first exceedance in well MW-31; therefore,
well MW-31 is in POOC status for TDS.
WeU Sample Date Parameter GWCL Sample Result
MW-3
5/3/2010
9/20/2010
11/19/2010
Field pH 6.5 - 8.5 s.u.
6.14 s.u.
6.39 s.u.
6.35 s.u.
MW-3 5/3/2010
11/19/2010 Selenium 37|Lig/L 37.2^g/L
38.8 iig/L
MW-3
5/3/2010
11/19/2010 Fluoride 0.68 mg/L 0.71 mg/L
0.77 mg/L
Field pH - well MW-3 has not previously been in accelerated status for Field pH before the January 20,
2010 Permit Modification. Since sampling began under the revised Permit, DUSA has exceeded the
GWCL for Field pH in well MW-3 in all three events; therefore, well MW-3 is in OOC status for Field pH.
Selenium - well MW-3 was in accelerated status for Selenium before the issuance ofthe January 20, 2010
Permit Modification. The result of 38.8 |ig/L in November 2010 is actually lower than the historic high for
Selenium at well MW-3 (46.3 |ig/L in 4* Qtr 2009) since groimdwater monitoring began in the 3"* Quarter,
of 2005. DUSA has exceeded the GWCL for Field pH in well MW-3 in two of three events, however the
events were not consecutive; therefore, well MW-3 is in POOC status for Selenium.
Fluoride - well MW-3 has not previously been in accelerated status for Fluoride before the January 20,
2010 Permit Modification. The result of 0.77 mg/L in November 2010 is actually lower than the historic
high for Selenium at well MW-3 (0.8 mg/L in 4'*' Qtr 2009) since groundwater monitoring began in the 3*^
Quarter, of 2005. DUSA has exceeded the GWCL for Fluoride in well MW-3 in two of three events,
however the events were not consecutive; therefore, well MW-3 is in POOC status for Fluoride.
Pages
Well Sample Date Parameter GWCL Sample Result -
5/4/2010 6.23 s.u.
9/21/2010 Field pH 6.5-8.5 s.u. 6.42 s.u.
MW-3A 11/22/2010 6.21 S.U. MW-3A 11/22/2010 Selenium 89 ug/L 94.8jig/L
5/4/2010 Sulfate 3,640 mg/L 3,680 mg/L
5/4/2010 TDS 5,805 mg/L 5,860 mg/L
Well MW-3 A didn't have any parameters in accelerated status prior to the January 20, 2010 Permit
Modification as well MW-3A was a "new well" and didn't have GWCLs established until Executive
Secretary approval of the April 30, 2008 New Wells Background Report. The Background Report was
approved with the January 20, 2010 Permit Modification.
Field pH - Since sampling began under the revised Permit, DUSA has exceeded the GWCL for Field pH in
well MW-3A in all three events; therefore, well MW-3A is in OOC status for Field pH.
Selenium - DUSA exceeded the Selenium GWCL of 89 |ig/L in well MW-3 A in the 4* Qtr of 2010;
therefore, well MW-3 A is in POOC status for Selenium. The result of 94.8 \ig/L in the 4^ Qtr of 2010 is
actually lower than the historic high for Selenium at well MW-3A (107 \xg/L in 1'^ Qtr 2009).
Sulfate - DUSA exceeded the Sulfate GWCL of 3,640 mg/L in well MW-3A in May 2010; therefore, well
MW-3 is in POOC status for Selenium.
TDS - DUSA exceeded the TDS GWCL of 5,805 mg/L in well MW-3A in May 2010; therefore, well MW-
3A is in POOC status for TDS.
WeU Sample Date Parameter GWCL Saniple Result
MW-12
4/27/2010
9/20/2010
11/19/2010
Selenium 25 |ig/L
25.7 ug/L
31.9 ug/L
21.6 ug/L MW-12
11/19/2010 Field pH 6.25 - 8.5 s.u. 6.47 s.u.
Selenium - Since sampling began under the revised Permit, DUSA has exceeded the GWCL for Selenium
in well MW-12 in all three events; therefore, well MW-12 is in OOC status for Selenium. The Selenium
September 2009 resuh of 31.9 fig/L is the highest resuh seen in well MW-12 since groundwater monitoring
began in the 2"^^ Quarter, of 2005.
Field pH - During the January 20, 2010 Permit Modification a GWCL was set for Field pH in well MW-12
at 6.5 - 8.5 s.u. The result of 6.47 s.u. in September 2010 is actually the lowest result for Field pH at well
MW-12 since groundwater monitoring began in the 1^^ Quarter, of 2005. The November 2010 Field pH
result is the first exceedance in well MW-12; therefore, well MW-12 is in POOC status for Field pH.
WeU Sample Date Parameter GWCL Sample Result
MW-18 3/22/2010
5/4/2010 FieldpH 6.25-8.5 s.u. 6.21 s.u.
6.20 s.u. MW-18
1/27/2010
3/22/2010
5/4/2010
9/15/2010
11/18/2010
Thallium 1.95 ^ig/L
3.32^g/L
3.91 }ig/L
3.73 ^g/L
3.64 ug/L
3.57 ug/L
MW-18
5/4/2010 Sulfate 1,938.90 mg/L 1,950 mg/L
Page 9
5/4/2010 TDS 3,198.77 mg/L | 3,280 mg/L
Field pH - DUSA has exceeded the GWCL for Field pH in well MW-18 for consecutive events (March
2010 and 2"''Qtr, 2010); therefore, well MW-18 is in OOC status for FieldpH. .
Thallium - well MW-18 was in accelerated status for Thallium before issuance of the January 20 j 2010
Permit Modification. Since sampling began under the revised Pemiit, DUSA has exceeded the GWCL for
Thallium in well MW-18 in all sampling events; therefore, well MW-18 is in OOC status for Thallium.
Sulfate - DUSA exceeded the Sulfate GWCL of 1,950 mg/L in well MW-18 in May 2010; therefore, well
MW-18 is in POOC status for Sulfate. The result of 1,950 mg/L in May 2010 was the historic high for
Sulfate at well MW-18 since sampling began in 2"'' Quarter 2005.
TDS - DUSA exceeded the TDS GWCL of 3,198.77 mg/L in well MW-18 in May 2010; therefore, well
MW-18 is in POOC status for TDS. The result of 3,280 mg/L in May 2010 was the historic high for TDS
at well MW-18 since sampling began in 2"'* Quarter 2005.
WeU Sample Date Parameter GWCL Sample Result
MW-1,9 5/4/2010 FieldpH 6.78 - 8.5 s.u. 6.61 s.u.
Field pH - DUSA exceeded the GWCL for Field pH in well MW-22 during the 2"" Quarter, 2010 sampling
event; therefore, well MW-19 is in POOC status for Field pH.
Well Sample Date Parameter GWCL Sample Result
MW-23 4/22/2010
11/22/2010 Field pH 6.5 - 8.5 s.u. 6.18 s.u.
6.44 s.u.
Well MW-23 didn't have any parameters in accelerated status prior to the January 20, 2010 Permit
Modification as well MW-23 was a "new well" and didn't have GWCLs established until Executive
Secretary approval ofthe April 30, 2008 New Wells Background Report. The Background Report was
approved with the January 20, 2010 Permit Modification.
Field pH - since sampling began under the revised Permit, DUSA has exceeded the GWCL for Field pH in
well MW-23 in two sampling events, however, neither of the events were consecutive; therefore, well
MW-23 is in POOC status for Field pH.
Well Sample Date Parameter GWCL Sample Result
MW-24
5/6/2010
11/17/2010 FieldpH 6.5-8.5 s.u. 5.78 s.u.
6.10 s.u.
MW-24
5/6/2010
9/21/2010
11/17/2010
Cadmium 2.5 [ig/L
4.28 ^g/L
5.06 ^g/L
3.22 ug/L MW-24
5/6/2010
9/21/2010
11/17/2010
Thallium 1.0 ug/L
1.3}ig/L
1.57 ug/L
1.09 ug/L
Well MW-24 didn't have any parameters in accelerated status prior to the January 20, 2010 Permit
Modification as well MW-24 was a "new well" and didn't have GWCLs established until Executive
Secretary approval of the April 30, 2008 New Wells Background Report. The Background Report was
approved with the January 20, 2010 Pemiit Modification.
Page 10
Field pH - since sampling began under the revised Permit, DUSA has exceeded the GWCL for Field pH in
well MW-24 in two sampling events, however, neither of the events were consecutive; therefore, well
MW-24 is in POOC status for Field pH.
Cadmium - since sampling began under the revised Permit, DUSA has exceeded the GWCL for Cadmium
in well MW-24 in all sampling events; therefore, well MW-24 is in OOC status for Cadmium. The 3'"''
Quarter, 2010 result (5.06 ^ig/L) was above the Utah GWQS (5 ^ig/L).
Thallium - since sampling began under the revised Permit, DUSA has exceeded the GWCL for Thallium
in well MW-24 in all sampling events; therefore, well MW-24 is in OOC status for Thallium.
WeU Sample Date Parameter GWCL Sample Result
MW-27
5/3/2010
9/14/2010
11/12/2010 .
Nitrate + Nitrite (asN) 5.6 mg/L
5;8 mg/L
5.9 mg/L
5.7 mg/L
MW-27
5/3/2010
9/14/2010
11/12/2010
Chloride 38 mg/L
42 mg/L
42 mg/L
45 mg/L
MW-27
5/3/2010 Sulfate 462mg/L 469 mg/L
MW-27
3/15/2010 ,
5/3/2010 TDS 1,075 mg/L 1,080 mg/L
1,160 mg/L
Well MW-27 didn't have any parameters in accelerated status prior to the January 20, 2010 Permit
Modification as well M\y-27 was a "new well" and didn't have GWCLs established unfil Executive
Secretary approval of the April 30, 2008 New Wells Background Report. The Background Report was
approved with the January 20, 2010 Permit Modification.
Nitrate + Nitrite (as N) - since sampling began under the revised Permit, DUSA has exceeded the GWCL
for Nitrate + Nitrite (as N) in well MW-27 in all sampling events; therefore, well MW-27 is in OOC status
for Nitrate + Nitrite (as N). The December 30, 2009 Nitrate Contamination Investigation Report (Figure 3)
included well MW-27 as part of the Nitrate Plume.
Chloride - since sampling began under the revised Pemiit, DUSA has exceeded the GWCL for Chloride in
well MW-27 for all sampling events; therefore, well MW-27 is in OOC status for Chloride. The December
30, 2009 Nitrate Contamination Investigation Report (Figure 4) did not include well MW-27 as part of the
Chloride Plume, but it did show the plume adjacent to well MW-27. Therefore, it is possible the plume has
moved into well MW-27.
Sulfate - DUSA exceeded the Sulfate GWCL of 469 mg/L in well MW-27 in May 2010; therefore, well
MW-18 is in POOC status for Sulfate.
TDS - since sampling began under the revised Permit, DUSA has exceeded the GWCL for TDS in well
MW-27 for two consecutive sampling events; therefore, well MW-27 is in OOC status for TDS. The result
of 1,950 mg/L in May 2010 was the historic high for Sulfate at well MW-18 since sampling began in 2"''
Quarter 2005.
WeU Sample Date Parameter GWCL Sample Result
MW-28
4/19/2010
9/14/2010
11/12/2010 Field pH 6.1 - 8.5 s.u.
5.67 s.u.
5.91 S.U.
5.72 s.u
Page 11
4/19/2010 108 mg/L
9/14/2010 Chloride 105 mg/L 106 mg/L
11/12/2010 107 mg/L
Well MW-28 didn't have any parameters in accelerated status prior to the January 20, 2010 Permit
Modification as well MW-28 was a "new well" and didn't have GWCLs established unfil Execufive
Secretary approval of the April 30, 2008 New Wells Background Report. The Background Report was
approved with the January 20, 2010 Permit Modification.
Field pH - since sampling began under the revised Permit, DUSA has exceeded the GWCL for Field pH in
well MW-28 in all sampling events); therefore, well MW-28 is in OOC status for Field pH.
Chloride - since sampling began under the revised Permit, DUSA has exceeded the GWCL for Chloride in
well MW-28 in all sampling events; therefore, well MW-28 is in OOC status for Chloride. The December
30, 2009 Nitrate Contamination Investigation Report (Figure 4) included well MW-28 as part of the
Chloride Plume.
WeU Sample Date Parameter GWCL Sample Result
MW-29 11/19/2010 Field pH 6.46 - 8.5 s.u. 6.17 s.u.
Field pH - DUSA exceeded the GWCL for Field pH in well MW-29 during the 4"" Quarter, 2010 sampling
event; therefore, well MW-29 is in POOC status for Field pH.
Well Sample Date Parameter GWCL Sample Result
4/20/2010 6.03 s.u.
9/13/2010. FieldpH 6.4 - 8.5 s.u. 6.33 s.u.
MW-32 11/10/2010 6.05 s.u.
4/20/2010
9/13/2010 Gross Alpha 3.33 pCi/L 4.5 (+/- 0.9) pCi/L
2.9 (+/-0.7) pCi/L
Field pH - well MW-32 had not previously been in accelerated status for Field pH before the January 20, .
2010 Permit Modification. Since sampling began under the revised Permit, DUSA has exceeded the.
GWCL for Field pH in well MW-32 in all sampling events; therefore, well MW-32 is in OOC status for
FieldpH.
Gross Alpha - well MW-32 was in accelerated status for Gross Alpha before the issuance of the January
20, 2010 Permit Modification. DUSA exceeded the Gross Alpha GWCL of 3.33 pCi/L in well MW-32 in
April 2010 with a resuh of 4.5 (+/- 0.9) pCi/L. Well MW-32 also showed a resuh of 2.9 (+/- 0.7) in
September 2010. According to Part I.E. 1(e)(3) of the Permit, because the error term was greater than 20%
and the sum of the activity concentration and error term (2.9 + 0.7 = 3.6) is greater than GWCL (3.33
pCi/L), DUSA has also exceeded the Gross Alpha GWCL in September 2010. Therefore, well MW-32 is
in OOC status for Gross Alpha.
2.0 4th Quarter, 2010 Groundwater Monitoring Reports Received by Respective Due Date
The DUSA 4* Quarter, 2010 (Febmary 28, 2011) Groundwater Monitoring Report was received by the
Division of Radiation Control (DRC) by its respective due date: March 1, 2011.
Page 12
3.0 Analytical Laboratories Used by DUSA Certified by State of Utah to Perform Analysis for all
Analytes
The analytical laboratories (Energy Labs - Casper and American West Analytical Lab) used by DtJSA to
perform analysis on the samples collected during the 4^ Quarter, 2010 Report monitoring events were
certified by the Utah Bureau of Laboratory Improvement for the parameters on which they performed
analysis.
4.0 Parameters That Were Not Analyzed or as Required by the Permit
During the 3'^'' Quarter (September), 2010 monitoring event, there were three wells with new constituents
that had exceeded their respecfive GWCL (MW-26 TDS, MW-31 TDS, MW-25 Uranium). All of these
wells are sampled at a quarterly frequency; therefore, these constituents are now required to be sampled on
a monthly basis. After review ofthe 4* Quarter, 2010 Report, it is apparent DUSA didn't.accelerate
sampling for TDS in wells MW-26 and MW-31 and Uranium in well MW-25, as required. These saniples
should have been collected in December of 2010. Failure to collect accelerated samples for TDS in wells
MW-26 and MW-31 and Uranium in well MW-25 during December of 2010 is in violation of Parts
I.E. 1(b)(2) and I.G. 1(b)(1) of the Permit. This is also a continuing violation previously cited in three DRC
NOVs dated January 11, 2008 (UGW07-04), Febmary 28, 2008 (UGW08-01), and April 1, 2008 (UGWO8-
02).
During an April 5, 2010 conference call with DUSA, there was a discussion when the accelerated sampling
should begin. The GWCLs for the White Mesa Mill were reset with the January 20, 2010 Permit
Modification and there was some confusion to when the accelerated sampling should commence. It was
agreed by DUSA and the DRC that wells required to be sampled on a semi-annual basis will be sampled in
the next quarter and wells required to be sampled on a quarterly basis will be sampled in the next
accelerated monthly sampling event after DUSA submits the required notification pursuant to Part I.G. 1(a)
of the Permit for GWCL exceedances during the quarter.
The nofification pursuant to Part I.G. 1(a) for the 3"* Quarter, 2010 exceedances was submitted by DUSA in
a November 12, 2010 letter and DUSA listed the exceedances described above; therefore DUSA should
have sampled for those parameters in the next accelerated monthly event (December). It appears DUSA
was well aware that accelerated sampling for those constituents was required in the 4^ Quarter, 2010, as
they stated so in Table 2 of the November 22, 2010 3'^^ Quarter, 2010 Report.
DUSA stated on page 9 of the 4^ Quarter, 2010 Report: "DUSA intended to commence the monthly
sampling for the third quarter exceedances in December 2010, which was the first monthly sampling
event after the receipt of the third quarter 2010 data in November 2010. However, although the data
were reviewed, the information was not communicated to the Mill Staff in sufficient time to allow for
the collection of the samples before the end of the fourth quarter 2010."
5.0 Analysis Performed Past Recommended Holding Time
During the 4*^ Quarter, 2010 (November) monitoring event, DUSA's analytical laboratory (Energy Labs -
Casper) performed analysis for mercury in 10 wells (MW-1, MW-3, MW-3A, MW-12, MW-18,'MW-19,
MW-20, MW-23, MW-26, and MW-34) and one blind duplicate (MW-70) past the recommended holding
time. These holding time exceedances are in violation of Section 8.2 and Table 1 of the DUSA QAP and
Part I.E. 1(a) of the Permit. The maximum holding time for mercury is 28 days, which is found in Table 1
of the approved DUSA QAP of 28 days. DUSA contacted the DRC by telephone on January 19, 2011 and
by written notice in a January 26, 2011 letter to notify the DRC of the problem. In the January 26, 2011
letter, DUSA claims it has met affirmative defense, as follows:
Page 13
"Denison believes that the affirmative defense in Part I. G.S. C) of the Permit should be applicable to this
incident, for the following reasons:
a) Notification
By virtue of the initial oral notification given to UDEQ at Wednesday, January 19, 2011, and this
written notice, Denison has submitted notification under UAC R317-6-6.13.
b) Failure was not Intentional or Caused by the Permittee's Negligence
The exceedance of the mercury holding time was not intentional or caused by Denison's negligence,
either in action or in failure to act. Denison used diligence in implementing the improved QA/QC
review protocols which resulted in the identification of the holding time exceedance. Similarly, the
exceedance was not caused by EL's negligence. EL reviewed its Utah Method Certification and
Methods description to determine the applicable holding time; however, during that review, EL
misinterpreted an existing discrepancy in the requirements within the methods.
c) The Permittee has Taken Adequate Measures to Meet Permit Conditions
Denison has taken adequate measures to meet Permit conditions in a timely manner. Denison
contacted UDEQ the same day that Denison corporate staff had received enough information to
conclude and confirm that a holding time exceedance had occurred. Denison has already notified the
laboratory in writing that the laboratory's interpretation was erroneous, and that EL is required to
meet the conditions in Denison's groundwater QAP.
d) The Provisions of UCA 19-5-107 Have Not Been Violated
The provisions of Utah Code 19-5-107 have not been violated. There has been no discharge ofa
pollutant into waters of the state. Denison has not caused pollution which constitutes a menace to
public health and welfare, or is harmful to wildlife, fish or aquatic life, or impairs domestic,
agricultural, industrial, recreational, or other beneficial uses of water, nor has Denison placed or
caused to be placed any waste in a location where there is probable cause to believe it will cause
pollution. There was no discharge of solutions from the Mill's tailings impoundments. "
Although, it appears that DUSA has met three of the four items (a, c, and d) needed to meet affirmative
defense, DUSA is ultimately responsible for the samples they collect. As a result, DUSA has failed to
meet all the requirements for Affirmafive Defense, as specified in UAC R317-6-6.16(C)(2). The cause of
this problem was caused by the neglect of DUSA's contract laboratory, Energy Labs - Casper. DUSA's ,
contract laboratory, Energy Labs - Casper, neglected to perform analysis for mercury in 11 samples within
the 28 days, as required by Secfion 8.2 and Table 1 ofthe DUSA QAP. Energy Labs - Casper claims that
they didn't perform the analysis for mercury within 28 for two reasons (from the DUSA January 26, 2011
letter):
1. EnergyLabs - Casper is currently Utah State certified for, and uses for DUSA's groundwater
analyses. Method 200.8 Determination of Trace Elements in Water and Wastes by Inductively
Coupled Plasma-Mass Spectrometry, Revision 5.4 dated 1994. This method, which is required by
the QAP, lists the holding time for mercury as 6 months. This method is the currently promulgated
method per 40 CFR 141 and 143 (September 1998).
2. DUSA collected all the samples for groundwater mercury during the period from November 15 to
November 29, 2010. Energy Labs - Casper received all of DUSA's fourth quarter groundwater
mercury samples during the period fi-om November 19, 2010 through November 24, 2010. Due to
Page 14
the laboratory staff schedules during the holidays, Energy Labs - Casper did not have enough
available staff to analyze the mercury samples within the 28 day hold time, which expired on
December 13, 2010 for the earliest, and December 28, 2010 for the latest ofthe mercury samples.
DUSA has used EnergyLabs for groundwater analysis since the original Permit was issued. Although,
DUSA has had holding time violations in the past, this is the first time its analytical laboratory failed to
perform analysis for mercury within the 28 day holding time requirement; therefore, DRC staff believes
item #2 is far more likely to be the cause of the holding time violation.
This is the third time DUSA has had a holding time violation. Previous, this problem was observed for
several VOC analytes in 42 samples collected between March 16, 2005 and June 14, 2006 (l" Quarter,
2005 thm 2"^^ Quarter, 2006). During a November 13, 2006 enforcement conference, these violations were,
resolved by DUSA after their commitment to prevent this from happening again (see November 15, 2006
Confirmatory Action Letter, p.2). In a November 21, 2006 response letter (p.2), DUSA responded that
it"...w/// take steps to ensure that analyses are performed by Energy Laboratories within the required time
frames... " These problems were observed again in the 4* Quarter^ 2007 (October) monitoring event where
carbonate and bicarbonate were not analyzed within the 14 day Tcquirement and DUSA was cited for this
problem in the April 1, 2008 NOV (UGW08-02, Violation #3). Based on DRC staff findings, it appears
DUSA has not lived up to its commitment as this continuing problem was also observed in the 4* Quarter,
2011 sampling event. These holding time exceedances are in violafion of Sections 8.2 and Table 1 of the
DUSA QAP and Part LE.l (a) of the Permit.
6.0 Field Data Worksheet for Ground Water used for the 4*'' Quarter and December 2010
monitoring reports not approved.
The Field Data Worksheet for Ground Water (hereafter Field Data Worksheet) used by DUSA for the 4^
Quarter (November) and December, 2010 monitoring events has not been approved by the DRC. The
approved Field Data Worksheet can be found in the currently approved DUSA QAP (3/22/2010 Revision
6), as Attachment 1. The Field Data Worksheet used during the 4* Quarter (November) and December,
2010 monitoring events has in the top right comer of the document "Date: 3/22/2010 Rev. 6" however, this
is not same Field Data Worksheet found in the approved DUSA QAP Revision 6. Both Field Data
Worksheets are included as Attachment 2 for comparison purposes. Failure to use the currently approved
Field Data Worksheet is in violafion of Part I.E. 1 (a) of the Permit.
7.0 Groundwater Samples Collected with Turbidity Measurement > 5 NTU
' )
As stated in Secfion 6.2.7(d)(v) ofthe DUSA QAP: "... turbidity measurement in the water should be <5
NTU prior to sampling unless the well is characterized by water that has a higher turbidity. " During the
and 4*^^ Quarter, 2010 monitoring event, there were 6 wells where DUSA collected groundwater samples
above the 5 NTU standard (see table below).
Table 3 - Groundwater Samples Collected with Turbidity Measurement > 5 NTU
Groundwater
Monitoring Event Well Turbidity
4th Qtr, 2010 12.1 .
4th Qtr, 2010 MW-12 ^'^ 139.2
4th Qtr, 2010 MW-29 8.5
4th Qtr, 2010 MW-32 ^'^ 8.5
4th Qtr, 2010 MW-34 ^'^ 14.7
4th Qtr, 2010 MW-35 ^'^; 1505
Footnotes:
I) Data for this well was obtained from Tab B of the 4* Quarter 2010 Groundwater Monitoring Report
Page 15
Failure to collect groundwater samples below the 5 NTU standard is a concem in that excess turbidity has
the potential to bias groundwater quality analytical results. Section 6.2.7(d)(v) of the DUSA QAP needs
improvement, in that its current wording "...turbidity measurement in the water should be < 5 NTU prior to
sampling... " needs to be strengthened in the DUSA QAP to make it a requirement before sample
collection. A conference call was held with DUSA on Febmary 16, 2010 to discuss ways to improve the
DUSA QAP. During the call, it was agreed that Section 6.2.7(d)(v) ofthe DUSA QAP would be changed
to "shall" rather than should. A redline/strikeout version of the QAP (Revision 6.0) was e-mailed to
DUSA on Febmary 17, 2010. On Febmary 25, 2010 DUSA requested a conference call to discuss
turbidity. In the conference call, Mr. Ryan Palmer of DUSA explained that they have been-seeing turbidity
in several wells above the 5 NTU standard at the time of sample collection. Mr. Palmer said that the levels
of turbidity seen were a direct resuh of DUSA pumping the required two casing volumes before sample
collection. DUSA brought up the possibility of requesting a variance for turbidity stabilization. The DUSA
request for variance regardmg turbidity was submitted under letter dated April 2,2010.
After DRC review of the variance request, the DRC sent DUSA a Request for Information (RFI) on June 1,
2010. In the RFI (Item #2), the DRC stated: "Before the DRC can consider approval of any variance
regarding turbidity in monitoring wells, DUSA has to provide convincing evidence that all monitoring
wells at the Mill have been developed properly and all commonly well development methods were
attempted and exhausted. " As of today, Febmary 8, 2011, no evidence that all monitoring wells at the
White Mesa Uranium Mill were properly developed has been provided by DUSA.
On March 22, 2010 DUSA submitted DUSA QAP (Rev. 6). After review of this document, it appears
Section 6.2.7(d)(v) ofthe DUSA QAP will remain as "...turbidity measurement in the water should be < 5
NTU prior to sampling... "for the time being. The DRC approved DUSA QAP (Rev. 6) in a letter dated
April 20, 2010.
8.0 Previous Monitoring Events QA/QC Sample Data Problems
QA/QC problems found in the 1 ^\ 2"^*, and 3'''* 2010 Groundwater Monitoring Reports groundwater
monitoring events showed a number of issties of non-compliance with the DUSA QAP (for details see
Febmary 8, 2011 DRC Memo). These antecedent problems were identified in previous DRC documents,
and included:
• DUSA failed to allow field turbidity to stabilize before collecting groundwater samples in 8 wells
* during the 2"^* Quarter, June, and July, 2010 monitoring events. This is in violafion of Section
6.2.7(d)(v) of the DUSA QAP and Part I.E.l(a) ofthe Permit. This is a confinuing violafion cited
previously in the November 17, 2009 and April 20, 2010 DRC NOVs.
• DUSA failed to protect the waters of the state in that 11 contaminants have exceeded their
respective GWCL in Table 2 of the Permit for two consecutive sampling events. This is in
violation of the Utah Water Quality Act (UC 19-5-107) and Part I.C. 1 and Table 2 of the Permit.
• During the May 2010 monitoring event. Relative Percent Difference was greater than 20% in
original sample (MW-26, 0.3 mg/L) compared to duphcate sample (MW-65, 0.4 mg/L) for Nitrate
+ Nitrite (as N) (-28.57%), see Table 4. This is in violation of Section 9.1.4(a) of the QAP.
9.0 QA/QC Sample Data Problems 4*''Quarter of 2010
The following are QA/QC problems that occurred in the monitoring events during the 4''' quarter of 2010.
The issues listed below are in non-compliance with the QAP and details can be found in Table 6.
Page 16
4^ Quarter 2010. Sampling Date: November 9 - December 1, 2010 (Table 6)
• The equipment rinse blank (MW-34R) had detectable concentrations of Ammonia (as N) (0.06
mg/L), Nitrate + Nitrite (as N) (0.1 mg/L), sulfate (2 |Lig/L), and bicarbonate (5 |ag/L). None of
these concentrations were within an order of magnitude compared to the original field samples
collected during the 4* Quarter, 2010 monitoring event.
• Relative Percent Difference (RPD) was greater than 20% in original sample (MW-l 8, 94 )ig/L)
compared to duplicate sample (MW-70, 118 ^ig/L) for iron (-22.64%), see Table 4. This is in
violation of Section 9.1.4(a) of the QAP. When DUSA submits an original and duplicate sample to
the DRC for reporting purposes, the DRC will use the sample with the highest concentration
submitted to determine compliance. Both samples were below the GWCL for iron in well MW-18
[414.68 \ig/L]. This RPD problem was identified by DUSA in Tab G, Table G-7A in the 4^^
Quarter, 2010 Report.
October 19 - 20, 2010 Accelerated Monitoring Event (Table 6)
• Relative Percent Difference was greater than 20% in original sample (MW-26, 1,000 |ig/L)
compared to duplicate sample (MW-65, 740 |ig/L) for Chlorform (29.89%), see Table 6. This is in
violation of Secfion 9.1.4(a) of the QAP. When DUSA subrhits an original and duplicate sample to
the DRC for reporting purposes, the DRC will use the sample with the highest concentration
submitted to determine compliance. Both of these samples were above the GWCL for Chloroform
in well MW-26 (70 \xg/L); however, well MW-26 is associated with the Chloroform plume, so this
resuhs is not a surprise. This RPD problem was idenfified by DUSA in Tab G, Table G-7B in the
4* Quarter, 2010 Report.
• Relative Percent Difference was greater than 20% in original sample (MW-26, 52 mg/L) compared
to duplicate sample (MW-65, 38 mg/L) for Chlorform (29.89%), see Table 6. This is in violafion
of Section 9.1.4(a) of the QAP. When DUSA submits an original and duplicate sample to the DRC
for reporting purposes, the DRC will use the sample with the highest concentration submitted to
determine compliance. Both of these samples were below the GWCL for Chloride in well MW-26
(70 \ig/L). This RPD problem was idenfified by DUSA in Tab G, Table G-7B in the 4* Quarter,
2010 Report.
It doesn't appear that DUSA is using the presence of detectable concentrations in the equipment rinse
blank in the 4'*' Quarter, 2010 Groundwater Report to flag or disqualify the groundwater sample results.
Furthermore, the approved QAP is currently silent on how equipment rinse blank results should have a
bearing on groundwater sample interpretation.
10.0 Violations Wliere Pursuing a Notice of Violation is Recommended
1. DUSA failed to collect accelerated samples for TDS in wells MW-26 and MW-31 and Uranium in
well MW-25 during December of 2010. This is in violafion of Parts I.E.l(b)(2) and I.G.l(b)(l) of
the Permit. This is also a continuing violation previously cited in three DRC NOVs dated January
11, 2008 (UGW07-04), Febmary 28, 2008 (UGW08-01), and April I, 2008 (UGW08-02).
2. DUSA's analytical laboratory (Energy Labs - Casper) performed analysis for mercury in 10 wells
(MW-1, MW-3, MW-3A, MW-12, MW-18, MW-19, MW-20, MW-23, MW-26, and MW-34) and
one blind duplicate (MW-70) past the recommended holding time. This is in violation of Section
8.2 and Table 1 ofthe DUSA QAP and Part I.E. 1(a) ofthe Permit. This is also a continuing
violation previously cited in the April 1, 2008 NOV (UGW08-02, Violation #3).
3. DUSA used a Field Data Worksheet for the 4* Quarter (November) and December, 2010
monitoring events has not been approved by the DRC. The Field Data Worksheet used by DUSA,
is not the approved Field Data Worksheet, as found in Attachment 1 of the March 22, 2010 DUSA
Page 18
APPENDIX 1
QA/QC
Tables
TABLE 2
MONITORING WELLS WITH CONTAMINANT(S) WITH GROSS ALPHA
COUNTING VARIANCE EXCEEDING 20%
(PCI/L)
Well
Contaniinant(s)
Groundwater Gradient
Relationship to Tailing Cells
Well
Contaniinant(s) 1st Qtr 2010
Jan. - March
Concentration
+ Error Term
Counting
Variance
2nd Qtr 2010
April • June
Concentration
+ Error Term
Counting '
Variance
3rd Qtr 2010
July - Sept.
Concentration
+ Error Term
Counting
Variance
4th Qtr 2010
Oct. - Dec.
Concentration
+ Error Term
Counting
Variance
Groundwater Gradient
Relationship to Tailing Cells
MW-1 1.1 (+/-0.5) 1.6 45.4% 0.7{+/-0.6) 1.3 85.7% Up gradient of the site.
MW-2 1.2 (+/-0.5) 1.7 41.6% Directly southwest of the southwest
comer and down gradient of Tailing
CelM.
MW-3 0.2 (+/- 0.3) 0.5 150% 0.4 (+/-0.6) 1.0 150% Down gradient of all the tailing cells
MW-3A 0.2 (+/- 0.4) 0.6 200% 1.7 (+/-0.8) 2.5 47% Down gradient of all the tailing cells
MW-5 0.1 (+/-0.3) 0.4 300% 0.3 (+/-0.08) 0.38 26.6% Down gradient of Tailing Cell 3.
MW-11 0.6 (+/-0.4) 1.0 S6.6% 0.3 (+/-0.3) 0.6 100% 0.6 (+/-0.5) 1.1 83.3% 0.2 (+/-0.08) 0.28 40% Directly down gradient of Tailing Cell 3.
MW-12 0.1 (+/-0.3) 0.4 300% 0.5 (+/-0.6) 1.1 120% Down gradient of Tailing Cell 3.
MW-14 0.4 (+/- 0.3) 0.7 75% 0.7 (+/- 0.5) 1.2 71.4% 0.7 (+/- 0.5) 1.2 71.4% 0.3 (+/-0.09) 0.39 30% Directly down gradient of Tailing Cell
4A.
MW-15 0.3 (+/-0.4) 0.7 133% 0.05 (+/-0.07) 0.12 140% Directly near the southwest comer and
down gradient of Tailing Cell 4A
MW-17 1.1 (+/-0.5) 1.6 45.4% 0.04 (+/-0.09). 0.13 225% Directly south of and down gradient of
Tailing Cell 4A.
MW-18 1.0 (+/-0.5) 1.5 50% 1.1 (+/-0.7) 1.8 63.6% Uo gradient of the site.
MW-19 0.9 (+/-0.5) 1.4 55.5% 1.2(+/-0.7) 1.9 58.3% Directly northeast and up gradient of
mill site.
MW-20* 0.7 (+/-0.4) 1.1 57.1% 0.3 (+/-0.4) 0.7 133% 0.7 (+/- 0.5) 1.2 71.4% 2.8 (+/-1.0) 3.8 35.7% Down gradient of all the tailing cells
MW-22* 3.1 (+/-0.8) 3.9 25.8% Down gradient of all the tailing cells
MW-23 2.3 (+/-0.6) 2.9 26% 1.8 (+/-0.9) 2.7 50% Directly on the southwest comer and
down gradient of Tailing Cell 3.
MW-24 0.4 (+/- 0.4) 0.8 100% 0.1 (+/-0.07) 0.17 70% Directly on the southwest comer and
down gradient of Tailing Cell 1.
MW-25 0.6 (+/-&.3) 0.9 50% 0.6 (+/-0.4) 1.0 66.6% 1.2 (+/-0,6) 1.8 50% Directty on the southeast comer and
cross gradient of Tailing Cell 3.
MW-26 2.4 (+/-0.5) 2.9 20.8% 2.5 (+/-0.7) 3.2 28% East and cross gradient ofTalling Cell
2. MW-26 is a pumping well. Pumping
from this well will capture some
groundwater under the eastside of
Tailing Cell 2.
MW-27 1.6(+/-0.5) 2.1 31.3% Near the northeast comer and
upgradient of Tailing Cell 1.
MW-28 1.9 (+/-0.6) 2.5 3i.e% Directly on the north side and up
gradient of Tailing Cell 2, and directly
on the south side and down gradient of
Tailing Cell 1.
MW-29 0.8 (+/-0.4) 1.2 50% Directly on the south side and
upgradient of Tailing Cell 3, and directly
on the south side and down gradient cf
Tailing Cell 2.
MW-30 0.6 (+/-0.4) 1.0 66.6% 0.1 (+/-0.3) 0.4 300% 0.6 (+/-0.3) 0.9 50% 0.2 (+/-0.08) 0.28 40% Directly on the north side and
upgradient of Tailing Cell 3, and directly
on the south side and down gradient df
Tailing Cell 2.
MW-31 0.7 (+/-0.4) 1.1 57.1% 0.8(+/-0.5) 1.3 62.5% 0.5 (+/-0.4) 0.9 80% 0.04 (+/-0.09) 0.13 225% Directly on the north side and
upgradient of Tailing Cell 3, and directly
on the south side and down gradient of
Tailing Cell 2.
MW-32 2.9 (+/- 0.7) 3.6 24.1% Directly near the southeast comer and 1
cross gradient of Tailing Cell 2 and
directly near the northeast comer and
up gradient of Tailing Cell 3.
MW-34 1.5(+/-0.8) 2.3 53.3% Directly on the south side and down
gradient of Tailing Cell 4B
|MW-35 Directly on the west side and
cross/down gradient of Tailing Cell 4B
• =; UnrBguiated well, Monitoring Wells MW-20 and MW-22 are General Monitoring Wells
Blank caHs - gross alpha concentration below laboratory detection ItrTiit {>1.0 pCi/L). Therefore, no counting
TABLES
QA/QC Samples for the 1st Quarter 2010 (January - March) Groundwater Monitoring Event
1st Quarter 2010 Monitoring Event February 2 -11, 2010
Contaminant GWQS Trip Blank Trip Bank Duplicate of MW-31 Trip Blank Trip Bank
MW-31 MW-65 % diff
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 <0.05 <0.05 0.00
Nitrate + Nitrite (as N) 10 21.7 22.3 -2.73
Heavy Metals (ug/L)
Arsenic 50 <5.0 <5.0 0.00
Beryllium 4 <0.50 <0.50 .0.00
Cadmium 5 <0.50 <0.50 0.00
Chromium ICQ <25 <25 0.00
Cobalt 730 '<10 <10 0.00
Copper 1,300 <10 <10 0.00
Iron 11,000 <3b <30 0.00
Lead 15 <1.0 <1.0 0.00
Manganese 800 <10 <10 0.00
Mercury 2 <0.50 <0.50 0.00
Molybdenum 40 <10 <10 0.00
Nickel 100 <20 <20 0.00
Selenium 50 60.8 60.4 0.66
Silver 100 <10 <10 0.00
Thallium 2 <0.50 <0.50 0.00
Tin 4,000 <100 <100 0.00
Uranium 30 7.12 7.07 0.70
Vanadium 60 <15 <15 0.00
Zinc 5,000 <10 <10 0.00
Radiologics (pCi/L)
Gross Alpha 15 1 |*0.7(+/-0.4) 1*0.9(0.5+/-)!
VOC (ug/L)
Acetone 700 <20 <20 <20 <20 0.00
Benzene 5 <1.0 <1.0 <1.0 <1;0 0.00
2-Butanone (MEK) 4,000 <20 <20 <20 <20 0.00
Carbon Tetrachloride 5 <1.0 <1.0 <1.0 <1.0 0.00
Chloroform 70 <1.0 <1.0 <1.0 <1.0 0.00
Chloromethane 30 . <1.0 <1.0 ' <1.0 <1.0 0.00
Dichloromethane 5 <1.0 <1.0 <1.0 <1.0 0.00
Naphthalene 100 <1.0 <1.0 <1.0 <1.0 0.00
Tetrahydrofuran (THF) 46 <1.0 <2.0 0.00
Toluene 1,000 <1.0 <1.0 <1.0 <1.0 0.00
Xylenes(total) 10,000 <1.0 <1.0 <1.0 <1.0 0.00
Others
Field pH (S.U.) 6.5-8.5 6.96 6.96 0
Fluoride (mg/l) 0.88 0.85 3.47
Chloride (mg/l) 128 130 -1.55
Sulfate (mg/l) 507 507 0
TDS (mg/l) 1,150 1,180 -2.58
General Inorganics
Carbonate (mg/l) <1.0 <1.0 0.00
Bicarbonate (mg/l) 224 226 -0.89
Sodium (mg/l) 92.2 92.3 -0.11
Potassium (mg/l) 6.2 6.1 1.63
Magnesium (mg/l) 80.2 79.8 0.50
Calcium (mg/l) 170 167 1.78
Total anions (meq/L) 19.4 19.6 -1.03
Total cations (meq/L) 19.3 19 1.57
TABLE 4
QA/QC Samples for the 2nd Quarter 2010 (April - June) Groundwater Monitoring Event
Accelerated Monitoring Event Mav 21 -24, 2010 Accelerated Monitorinq Event June 15 - 16, 2010 2nd Quarter 2010 Monitorinq Event April 19-Mav 6, 2010 • •
Contaminant GVVQS Field Blank Trip Bank Du olicate of MW-26 Trip Bank Du plicate of MW-26 Field Blank Trip Bank Trip Bank Duplicate of MW-32 Duplicate of MW-19-
• " •
MW-60 MW-26 MW-65 % diff MW-26 : MW-65 % diff MW-60 MW-32 ' MW-65 .- %diff MW-19 MW-70 % diff
Nutrients (mg/L
• ' • • • • ..• • ; • Ammonia (as N) 25 <0.05 0.72 0.81 -11.76 <0.05 <0.05 0.00 Nitrate + Nitrite (as N) 10 0.3 0.4 • • 0.4 0.4 _ 0.00 • <0.1 I <0.1 <0.1 0.00 2.6 2.6' 0.00
Heavy Metals (ug/L)
Arsenic 50 -<5.0 <5.0 <5.0 0.00 <5.0 <5.0 0.00
Beryllium 4 <0.50-<0.50 <0.50 . 0.00 <0.50 <0.50 0.00
Cadmium' 5 <0.5p <0.50 1.10 . 1.16 -5.31 <0.50 <0.50 0.00
Chromium , 100
•
<25 <25 <25 0.00 <25 <25 0.00
Cobalt " 730 <10. 41 38 7.59 <10 <10 0.00
Copper • 1,300 <10 <10 <10 0.00 <10 <10 0.00 Iron 11,000 <3b :<30 6,200 6,220 : -0.32 <30 <30 0.00
Lead 15 <1.0 <1.0 <1.0 0.00 <1.0 <1.Q 0.00
Manganese 800 <10 <10 5,150 4,940 4.16 ; <10 <10 0.00
Mercury 2 <0.50 <0.50 <0.50 0.00 <0.50 <0.50 0.00
Molybdenum 40. <10 <10 11 <10 <10 0.00 .
Nickel " . 100 <20, <20 49 44 10.75 <20 <20 0.00 '
Selenium 50 <5.0 <5.0 <5.0 0.00 11.6 11.1 4.41
Silver 100 <10 <10 <10 0.00 <10 <10 0.00
Thallium 2 <0.50 <0.50 <0.50 0.00 - 0.55 0.56 -1.80
fin 4,000 <100 <100 • <100 0.00 <100 <100 O.oo' Uranium 30 <0.30 37.4 37.1 0.81 36.6 37.4 -' ;2.16 <0.30 2.17 2.16 0.46 6.93 7.08 -2.14
Vanadium 60 <15 <15 <15 0.00 <15 <15 0.00 Zinc 5,000 <10 105 102 2.90 • <10 12
" Radiologics (pCi/L)
Gross Alpha 15 0.3(0.5+/-)! I I 1 •0.09(0.3+/-)! *4.5(+/-0.9)!*4.3(+/-0.8)1 *0.9 (+/- 0.5) *0.9(+/-0.5) VOC (ug/L)
Acetone . 700 <20 <20 <20 <20 <20 0.00 <20 <20 <20 <20 0.00 <20 <20 0.00
Benzene 5 <1.0 <1.0 <1.0 <1.0 <1.0 0.00 <1.0 <1.0 <1.0 <1.0 0.00 <1.0 <1.0 0.00
2-Butanone (MEK) 4,000 <20 <20 <20 <20 <20 0.00 <20 <20 <20 <20 0.00 <20 <20 0.00
Carton Tetrachloride 5 <1.0 <1.0 <1.0 <1.0 <1.0 0.00 <1.0 <1.0 <1.0 <1.0 0.00 <1.0 <1.0 0.00 Chloroform 70 -<1.0 <1.0 800 750 6.45 <1.0 940 960 -2.11 <1.0 <1.0 <1.0 <1.0 0.00 <i.o • <1.0 0.00
Chloromethane 30 <1.0 <1.0 <1.0 <1.0 - <1.0 0.00 <1.0 <1.0 <1.0 <1.0 0.00 <1.0 . <1.0 0.00
Dichloromethane 5 <1.0 <1.0 <1.0 2.2 2.2 0.00 <1.0 <1.0 "<1.0 <1.0 0.00 <1.0 <1.0 0.00
Naphthalene 100 <1.0 <1.0 <1.0 <20 <20 0.00 <1.0 <1.0 <1.0 <1.0 0.00 <1.0 <1.0 0.00 Tetrahydrofuran (THF) 46 <1.0 <1.0 <1.0 <1.0 <1.0 0.00 <1.0 <1.0 <1.0 <1.0 <1.0 0.00 <1.0 <1.0 0.00
Toluene 1,000 <1.0 <1.0 <1.0 <20 <20 0.00 <1.0 <1.0 <1.0 <1.0 0.00 <1.0 <1.0 0.00 Xylenes(total) lo.ocio <1.0 <1.0 <1.0 <1.0 <1.0 0.00 <1.0 . <1.0 <1.0 <1.0 0.00 <1.0 <1.0 0.00
Others
Field pH (S.U.) 6.5-8.5 6.36 6.36 0.00 6.98 6.98 0.00 6.11 6.03 6.03 0.00 . 6.61 6.61 '0.00
Fluoride (mg/l) <o:i 0.18 0.18 ' 0.00 0.98 0.98 0.00
Chloride (ring/I) 80 76 5.13 47 43 8.89 30 32 -6.45 28 28 0.00
Sulfate (mg/l) <1.0 2,390 2,290 4.27 543 571 -5.03
TDS(mg/l) <10 3,750 3,760 -0.27 1,130 1,120 0.89
General Inorganics
Carbonate (mg/l) <1.0 <1.0 <1.0 0.00 <1.0 <1.0 0.00
Bicartjonate (mg/l) 2' 486 484 0.41 273 272 0.37
Sodium (mg/l) <0.57 235 240 -2.11 107 108 -0.93
Potassium (mg/l) <0.50 14.4 14 2.82 4:22 4.27 -1.18
Magnesium (mg/l) <0.50 217 218 -0.46 49.6 50.9 -2.59 Calcium (mg/l) <0.50 514 513 0.19 150 150 0.00
Total anions (meq/L) 0.176 • 58.6 56.6 3.47 16.8 17.4 -3.51
Total cations (meq/L) • ND 54.1 54.4 -0.55 16.3 16.5 -1.22 . Field blank, trip blank, and duplicate sample data that rhay invalidate the groundwater sampte
Numbers in RED show the result exceeds respective GWCL standard. ^ Numbers in RED sliow thie result exceeds respective GWCL (a) Field Blank (MW-60),has detectable concentratioris of chloride and'bicart»nate.'
te:S6^ife^™&liS»:fe standard. Numbers in RED show the result exceeds respective GWCL standard. '
TABLE 5
QA/QC Samples for the 3rd Quarter, 2010 (July - September) Groundwater,Monltoring Event
Accelerated Monitoring EventJuly 20-21, 2010 Accelerated Monitoring Event August 24 - 25, 2010 • 3rd Quarter 2008 Monitorinq Event September 7 - 28, 2010
Contaminant GWQS Trip Bank Duplicate of MW-14 Trip Bank Duplicate of MW-11 Trip Bank Trip Bank Duplicate of MW-31 - Duplicate of MW-24 Trip Bank
MW-14 MW-65 ,1 % diff MW-11 MW-65 % diff MW-31 MW-65 1 % diff MW-24 MW-70-% diff
Nutrients (mq/L) • , , ••• • . , • • Amnnonia (as N) 25 <0.05 . <0.05 o:oo
Nitrate + Nitrite (as N) 10 21 22 -4.65
Heaw Metals (UQ/L)
Arsenic 50 <5.0 <5.0 0.00
Beryllium
Cadmium
4
5
<0.50
<0.50
<0.50
<0.50
0.00
0.00 5.06 5.10 -0.79
Chromium 100 <25 -<25 . 0.00
Cobalt 730 <10 <10 0.00
Copper
Iron -
I, 300
II, 000
<10
<30
<10
<30
o:oo
0.00
Lead 15 <1.0 <1.0 0.0(3
Manganese 800 138 135 2.20 <10 <10 .0.00
Mercury
Molybdenum
Nickel
2
40
100
<0.50
<10
<20
<0.50
<10
<2iD
0.00
0.00
0.00
Selenium 50 64.4 63.3 1.72
Silver 100. <10 <^Q 0.00
Thallium . 2 . <0.50 <0.50 0.00 1.57 1.52 3.24
Tin 4,00(3 <100 <100 0.00
Uranium 30 7.23 7.14 1.25
Vanadium 60 <15 <:15 0.00
Zinc , -5,000 1 <10 <10 0.00
Radiologics (pCi/L)
Gross Alpha 15 1 1 1 1 1 1 III 1*0.5 (+/-0.4)1*0.5 (+/-0.4)1 1 1 1
VOC (uq/L)
Acetone 700 <20 <20 . <20 <20 <20 <20 0.00
Benzene 5 <1.0, <1.0, <1.0 <1.0 ' <1.0 <1.0 0.00
2-Butanone (MEK) 4,000 <20 <20 <20 <20 <20 <20 0.00
Carbon Tetrachloride 5 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 . 0.00
Chloroform 70 .<1.0 <1.0 .•<1.0 <1.0 <1.0 <1.0 0.00
Chloromethane 30 <1.0 <1.0 <1.0 , '<1.0. <1;0 <1.0 0.00
Dichloromethane 5 <1.0 <1.0 <1.0 <1.0 <1.0 <1.p 0.00
Naphthalene -100 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 0.00
Tetrahydrofuran (THF)
Toluene
46
1,000
<1.0
<1.0
<1.0
<1.0
<1.0 <1.0 0.00
<1.0 <1.0
<1.0
<1.0
<1.0
<1.0
0.00
0.00
Xvlenes (total) 10,000 <1.0 • <1.0 <1.0 <1.0 <1.0 <1.0 o:oo
Others
Field pH (S.U.) 6.5-8.5 7.19 7.09 ~ 1.40. 7.66 7.75 -1.17 6.64 6.64 0.00
Fluoride (mg/l) -0.89 0.89 0.00
Chloride (mg/l) 139 132 5.17
Sulfate (mg/l) 527 540 -2.44
TDS (mg/l) 1,330 1,290 3.05
General Inorganics
Carbonate (mg/l) <1.0 <1,0 0.00
Bicarbonate (mg/l) 226 225 0.44
Sodium (mg/l)
Potassium (mg/l)
91
5.7.
92.1
, 5.7
-1.20
0.00
Magnesium (mg/l)
Calcium (mg/l)
78.1
164
79.4
170
-1.65
-3.59
Total anions (meq/L) 20.1 20.3 -0.99
Total cations (meq/L) 18.7 19.2 -2.64
Trip blank and duplicate sample data that may invalidate the groundwater samples
Numbers in RED show the result exceeds respective GWCL standard. Numbers in RED show the result exceeds respective GWCL standard.
TABLE 6
QA/QC Samples for the 4th Quarter 2010 (October - December) Groundwater Monitoring Event
Accelerated Monitoring Event October 19-20, 2010 Accelerated Monitoring Event December 14-15, 2010 4th Quarter 2010 Monitorinq Event November 9 December 1, 2010
Contaminant GWQS Trip Bank Duplicate of MW-26 Trip Bank Duplicate of MW-32 Trip Bank Trip Bank Trip Bank Eq. Bank Duplicate of MW-32 Duplicate of MW-22
MW-26 MW-65 % diff MW-26 MW-65 % diff MW-34R MW-32 MW-65 % diff MW-18 MW-70 % diff
Nutrients (mg/L)
Ammonia (as N) 25 • O.Of 1.04 1.01 2.93 0.09 0.09 " 0.00
Nitrate + Nitrite (as N) 10 0.4 0.4 0.00 0.4 0.4 0.00 6.1"' '. <0.1 .<0.1 0.00 <0.1 <0.1 0.00
Heavy Metals (ug
Arsenic 50 -<5.0 <5.0 <5:0 0.00 <5.0 <5.0 0.00
Beryllium 4 <0.50 <0.50 <0.50 0.00 ' <0.50 <0.50 0.00
Cadmium 5 <0.50 0.78 0.81 -3.77 <0.50 <0.50 0.00
Chromium 100 <25 <25 <25 0.00 <25 <25 0.00
Cobalt 730 <10 46 38 19.05 <10 <10 0.00
Copper ' 1,300 <10 <10 <10 0.00 <10 <10 0.00
Iron
Lead
11,000
15,
<30
<1.0
6,200 •
<1.0
6,190
<1.0
0.16
0.00
94
<1.0
118
<1.0 0.00
Manganese 800 <10 5,090 4,760 6.70 70 68 2.90
Mercury 2 <0.50 '<0.50 <0.50 0.00 <0.50 <0.50 • 0.00
Molybdenum 40-<10 <10 <10 0.00 <10 <10 0.00
Nickel 100 <20 49 48 2.06 <20 <20 ' 0.00
Seleniijm . 50 : <5.0 <5.0 <5.0 0.00 <5.0 <5.0 0.00
Silver ' 100 <10 <10 <10 0.00 <10 <10 0.00
Thallium • 2 <0.50 <0.50 <0.50 0.00 3.57 3.63 -1.67
Tin • 17,000 <100 , <100 <100 0.00 <100 <100 0.00
Uranium 30 37:5 36.7 . 2.16 29:6 30.8 -3.97 <0.30 2.11 , 2.05 2.88 42.70 43.40 -1.63
Vanadium 60 <15 <15 <15 0.00 <15 <15 0.00
Zinc ' 5,000-<10 81 76" 6.37 - <10 <10 0.00
Radiologics (pCi/L)
Gross Alpha 15 •1.5 (0.8+/-)^ 1.4(+/-0.1) 1.4 (+/-0.1) •1.1 (+/-0.7)1*0.7 (+/-0.6)1 ,.
VOC (ug/L)
Acetone 700 <20 <20 <20 0.00 <20 <20 <20 0.00 <20 <20 <20 <20 <20 <20 0.00 <20 <20 0.00
Benzene 5 <1.0 <1.0 <1.0 0.00 <1.0 <1.0 <1.0 0.00 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 0.00 <1.0 <1.0 0.00
2-Butan6ne(MEK) , 4,000 <20 <20 • <20 0.00 <20 <20 <20 0.00 <20 <20 <20 <20 <20 <20 0.00 <20 <20 0.00
Carbon Tetrachloride 5 <1.0 <1.0 <1.0 0.00 <1.0 <1.0 <1.0 0.00 <1.0 <1.0 <1.0 <1.0. <1.0 <1.0 0.00' <1.0 <1.0 0.00 Chloroform 70 <1.0 1,000 740 Il;>ir2.9:89 iAJ^'. <1.0 1,400 1,300 , 7:41 <1.0 <1.0 ,, <1.0 <1.0 <1.0 <1.0 0.00 <1.0 <1.0 0.00
Chloromethane 30 • <1.0 <1.0 <1.0 0.00 <1.0 <1.0 <1.0 0.00 <1.0 <i."o <1.0 <1.0 . <1.0 <1.0 0.00 <1.0 <1.0 0.00
Dichloromethane 5 <1.0 5.5 5.6 -1.80 <1.0 1.2 <1.0 0.00 : <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 0.00 <1.0 <1.0 0.00
Naphthalene 100-<1.0 <20 <20 0.00 <1.0 <20 <20 0.00 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 0.00 <1.0 <1.0 0.00
Tetrahydrofuran'(THF) 46 <1.0 <1.0 <1.0 0.00 <1.0 <1.0 <1.0 0.00 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 0.00 <1.0 <2.0 0.00
Toluene 1,000 <1.0 <20 <20 0.00 <1.0 <20 <20 0.00 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 0.00 <1.0 <1.0 0.00
Xylenes (total) 10,000 <1.0 / <1.0 <1.0 - 0.00 <1.0 <1.0 <1.0 0.00 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 0.00 <1.0 <1.0 0.00
others
FieldpH (S.U.) 6.5-8.5 6.61 6.61 0.00 6.45 6.45 0.00 8.89 6.05 6.05 0.00 6.37 6.37 0.00
Fluoride (mg/l)
Chloride (mg/l) 52 38 52 51 1.94
<0.10 0.19
35
0.18
31
5.41
12.12
0.22
52
0.22
53
0.00
-1.90
Sulfate (mg/l) • 2' ^ ri' 2,330 2,410 -3.38 1,910 1,950 -2.07
TDS (mg/l) <io 3,690 3,730 -1.08 3,030 3,160 -4.20
General Inorganics
Carbonate (mg/l)
Bicarbonate (mg/l)
<1.p
•' 5', •
<1.0
483
<1.0
480
0.00
0.62
<1.0
469
<1.0
467
0.00
- 0.43
Sodium (mg/l) <0.60 218 224 -2.71 i 174 177 -1.71
Potassium (mg/l) <0.50 14.4 14.5 -0.69 9.6 9.6 0.00
Magnesium (mg/l) <0.50 211 219 -3.72 126 127 -0.79
Calcium (mg/l) <0.50 498 518 -3.94 564 566 -0.35
Total anions (meq/L) \. 0.132 57.4 58.9 -2.58 49 49.7 -1.42
Total cations (meq/L) 0.00428 52.2 54.1 -3.57 46.4 46.6 -0.43
Field blank, equipment blank, trip blank, and duplicate st mple data that may invalidate the groundwater samples
Numbers in RED show the result exceeds respective GWCL
Relative,ReTcefItiDlffwOTc'ergr^^
Numbers in RED show the result exceeds respect veGWCL (a) Equipment Rinsig Blank (MW-63) has detectable concentrations of ammonia (as N), Nitrate + Nitrite (as N), Gross Alpha:'Sulfate, and
Carbonate..l'i.. ^ .['r • '- .
Numtrers in RED show the result exceeds respective GWCL
RelativV€wcWDiffe7ehca'grMtff;than:20%i^^
Page 19
APPENDIX 2
Monitor Well Concentration Tables for:
MW-1, MW-2, MW-3, MW-3A, MW-5, MW-11, MW-12, MW-14,
MW-15, MW-17, MW-18, MW-19, MW-20, and MW-22 through MW-35
MW-1
GWQS GWCL MW-1 (Semi-Annual Monitoring)
Contaminant, (Class II) 2nd Qtr. 2010 4th Qtr. 2010 Contaminant,
April - June
5/5/2010
Oct. - Dec.
11/18/2010
Parameters Listed in Table 2 1
Nutrients (mg/L)
Ammonia (as N) 25 . 6.25 0.18 0.12
Nitrate + Nitrite (as N) 10 2.5 <0.1 <0.1
Heavy Metals (gg/L)
Arsenic . 50 12.5 <5.0 <5.0
Beryllium 4 1 <0.50 <0.50
Cadmium 5 4.2 <0.50 <0.50
Chromium 100 50 <25 <25
Cobalt 730 182.5 <10 <10
Copper 1,300 325 <10 <10
Iron 11,000 2,750 630 324
Lead 15 5.59 <1.0 <1.0
Manganese 800 289 212 275
Mercury 2 0:5 <0.50 <0.50
Molybdenum 40 10 <10 <10
Nickel 100 25 <20 <20
Selenium. 50 12.5 <5.0 <5.0
Silver 100 25 <10 <10
Thallium 2 0.5 <0.50 <0.50
Tin 17,000 4,250 <100 <100
Uranium 30 7.28 0.33 0.33
Vanadium 60 15 <15 <15
Zinc 5,000 251 <10 <10
Radiologics (pCi/L)
Gross Alpha 15 3,75 •1.1(+/-0.5) *0.7 (+/- 0.6)
VOC (pg/L)
Acetone 700 175 <20 <20
Benzene 5 1.25 <1.0 <1.0
2-Butanone (MEK) 4,000 1,000 <20 <20
Carbon Tetrachloride 5 1.25 <1.0 <1.0
Chloroform 70 17.5 <1.0 <1.0
Chloromettiane 30 7.5 <1.0 <1.0
Dichloromethane 5 1.25 <1.0 <1.0
Naphthalene 100 25 <1.0 <1.0
Tetrahydrofuran (THF) 46 11.5 7.8 10.7
Toluene 1,000 250 <1.0 <1.0
Xylenes (total) 10,000 2,500 <1.0 <1.0
Others
Field pH (S.U.) 6.5-8.5 6.77-8.5 6.87 6.96
Fluoride (mg/L) 4 0.56 0.26 0.29
Chloride (mg/L) 22.1 18 15
Sulfate (mg/L) 838 805 792
TDS (mg/L) 1,567 1,340 1,350 .
General Inorganics Listed In Part I.E.1"(c)(2)(ii)
Carbonate (mg/L) <1.0 <1.0
Bicarbonate (mg/L) 313 303
Sodium (mg/L) 177 169
Potassium (mg/L) 6.77 6.8
Magnesium (mg/L) 57.4 61.6
Calcium (mg/L) 161 175
Total anions (meq/L) 22.4 21.9
Total cations (meq/L) 20.7 21.3
MW-2
Contaminant
GWQS GWCL
(Class III)
MW-2 (Seml-Annual Monitoring)
Contaminant
GWQS GWCL
(Class III) 2nd Qtr. 2010
April - June
4/27/2010
4th Qtr. 2010
Oct. - Dec.
11/17/2010
Parameters Listed In Table 2
Nutrients (mg/L)
Ammonia (as N) 25 12.5 <0.05 <0.05
Nitrate + Nitrite (as N) 10 0.12 <0.1 <0.1
Heavy Metals (jjg/L)
Arsenic 50 25 <5.0 <5.0
Beryllium 4 2 <0.50 <0.50
Cadmium 5 2.5 <0.50 <0;50
Chromium 100 50 <25 <25
Cobalt 730 365 <10 <10
Copper 1,300 650 <10 <10
Iron 11,000. 151.6 <30 <30
Lead 15 7.5 <1.0 <1.0
Manganese 800 378.76 <10 <10
Mercury 2 1 <0.50 <0.50
Molybdenum 40 20 <10 <10
Nickel 100 60 <20 <20
Selenium 50 26.6 <5.0 9.2
Silver 100 50 <10 <10
Thallium 2 1 <0.50 <0.50
Tin 17,000 8,500 <100 <100
Uranium 30 18.45 9.94 10.2
Vanadium 60 30 <15 <15
Zinc 5,000 2,500 31 <10
Radiologics (pCi/L)
Gross Alpha 15 1 3.2 1 *1.2(+/-0.5) 1 0.7(+/-0.1)
VOC (ug/L)
Acetone 700 350 <20 <20
Benzene 5 2.5 <1.0 <1.0
2-Butanone (MEK) 4,000 2,000 <20 <20
Carbon Tetrachloride 5 2.5 <1.0 <1.0
Chloroform 70 35 <1.0 <1.0
Chloromethane 30 15 <1.0 <1.0
Dichloromethane 5 2.5 <1.0 - <i.a
Naphthalene 100 50 <1.0 <1.0
Tetrahydrofuran (THF) 46 23 <1.0 <1.0
Toluene 1,000 500 <1.0 <1.0
Xylenes (total) 10,000 5,000 <1.0 <1.0
Others
Field pH (S.U.) 6.5-8.5 6.5-8.5 7.48 6.91
Fluoride (mg/L) 4 0.43 0.3 0.29
Chloride (mg/L) 20 7 7
Sulfate (mg/L) 2,147 1,970 2,000
TDS (mg/L) 3,800 3,130 3,140
General Inorganics Listed in Part I.E.I.(c)(2)(ii)
Carbonate (mg/L) <1.0 <1.0
Bicarbonate (mg/L) 402 384
Sodium (mg/L) 538 503
Potassium (mg/L) 10.6 10.5
Magnesium (mg/L) 94.2 93.1
Calcium (mg/L) 336 328
Total anions (meq/L) 47.9 48.2
Total cations (meq/L) 48.2 46.2
MW-3
Contaminant
GWQS GWCL
(Class III)
MW-3 (Semi-Annual Monitoring)
Contaminant
GWQS GWCL
(Class III) 2nd Qtr. 2010
April - June
5/3/2010
3rd Qtr. 2010
'"'July - Sept.
9/20/2010
4th Qtr. 2010
Oct. - Dec.
11/19/2010
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 1.16 <0.05 0.11
Nitrate + Nitrite (as N) 10 0.73 0.3 0.4
Heavy Metals (ug/L)
Arsenic 50 25 <5.0 <5.0
Beryllium 4 2 <0.50 <0.50
Cadmium 5 4.67 0.78 0.63
Chromium 100 50 <25 <25
Cobalt 730 365 <10 <10 ^
Copper 1,300 650 <10 <10
Iron 11,000 427.13 <30 <30
Lead 15 7.5 <1.0 <1.0
Manganese 800 4,233 168 143
Mercury 2 1 <0.50 <0.50
Molybdenum 40 20 <10 <10
Nickel 100 100 <20 <20
Selenium 50 37 37.2 35.5 38.8
Silver ' 100 50 <10 <10
Thallium 2 1.6 1.31 1.34
Tin 17,000 8,500 <100 <100
Uranium 30 47.32 18.6 16.9
Vanadium 60 . 30 <15 <15
Zinc 5,000 173.19 96 40
Radiologics (pCi/L)
Gross Alpha 15 i 1 1 *0.2(+/-0.3) j 1 *0.4 (+/-0.6).
VOC (gg/L)
Acetone 700 350 <20 <20
Benzene 5 2.5 <1.0 <1.0
2-Butanone (MEK) 4,000 2,000 <20 <20
Carbon Tetrachloride 5 2.5 <1.0 <1.0
Chloroform 70 35 <1.0 .<1.0
Chloromethane 30 15 <1.0 <1.0
Dichloromethane 5 2.5 <1.0 <1.0
Naphthalene 100 50 <1.0 <1.0
Tetrahydrofuran (THF) 46 23 <1.0 <1.0
Toluene 1,000 500 <1.0 <1.0
Xylenes (total) 10,000 5,000 <1.0 <1.0
Others
Field pH (S.U.) ^ 6.5-8.5 6.5-8.5 6.14 6.39 6.35
Fluoride (mg/L) 4 0.68 0.71 0.63 0.77
Chloride (mg/L) 76 63 63
Sulfate (mg/L) 3,663 ^ 3,490 3,430
TDS (mg/L) 6,186 5,270 5,020
General Inorganics Listed in Part I.E.I.(c)(2)(ii)
Carbonate (mg/L) .<1.0 <1.0
Bicarbonate (mg/L) 272 234
Sodium (mg/L) 761 780
Potassium (mg/L) 22.6 24.8
Magnesium (mg/L) 234 248
Calcium (mg/L) 428 468
Total anions (meq/L) 79 77.2
Total cations (meq/L) 74.3 78.3
Note:
Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL)
(a) = Quarterly accelerated monitoring event
MW-3A
Contaminant
GWQS GWCL
(Class 111)
MW-3A (Semi-Annual Monitoring)
Contaminant
GWQS GWCL
(Class 111) 2nd Qtr. 2010
April - June
5/4/2010
3rd Qtr. 2010
'"July - Sept.
9/21/2010
4th Qtr. 2010
Oct. - Dec.
11/22/2010
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 0.6 <0.05 0.08
Nitrate + Nitrite (as N) 10 1.3 1 1.2
Heavy Metals (gg/L)
Arsenic 50 25 <5.0 <5.0
Beryllium 4 2 1.18 0.73
Cadmium 5 8.3 1.82 1.82
Chromium 100 50 . <25 <25
Cobalt 730 365 <10 <10
Copper 1,300 650 <10 <10
Iron 11,000 5,500 -<30 <30
Lead 15 7.5 <1.0 <1.0
Manganese 800 6,287 134 270
Mercury 2 1 0.5 <0.50
Molybdenum 40 20 <10 <10
Nickel 100 105 <20 <20
Selenium 50 89 81.4 94.8
Silver 100 50 <10 <10
Thallium 2 1.4 0.96 0.95
Tin 17,000 8,500 <100 <100
Uranium 30 35 19.5 19.2
Vanadium 60 30 <15 <15
Zinc 5,000 155 132 54
Radiologics (pCi/L)
Gross Alpha 15 1 7.5 1 *0.2(+/-0.4) 1 1 *1.7(+/-0.8)
VOC (gg/L)
Acetone 700 350 <20 <20
Benzene 5 2.5 <1.0 <1.0
2-Butanone (MEK) 4,000 2,000 <20 <20
Carbon Tetrachloride 5 2.5 <1.0 <1.0
Chloroform 70 35 <1.0 <1.0
Chloromethane 30 9.4 <1.0 <1.0
Dichloromethane 5 2.5 <1.0 <1.0
Naphthalene 100 50 <1.0 <1.0
Tetrahydrofuran (THF) 46 23 <1.0 <1.0
Toluene 1,000 500 <1.0 <1.0
Xylenes (total) 10,000 5,000 <1.0 <1.0
Others
Field pH (S.U.) 6.5 - 8.5 6.5-8.5 6.23 6.42 6.21
Fluoride (mg/L) 4 1.6 0.94 1.28
Chloride (mg/L) 70 57 . 59
Sulfate (mg/L) 3,640 3,680 3,630 ' 3,850
TDS (mg/L) 5,805 5,860 5,470 5,330
General Inorganics Listed in Part I.E.!.(c)(2)(ii)
Carbonate (mg/L) <1.0 <1.0
Bicarbonate (mg/L) 436 346
Sodium (mg/L) 840 754
Potassium (mg/L) 28.2 27.8
Magnesium (mg/L) 302 312
Calcium (mg/L) 487 463
Total anions (meq/L) 85.5 87.6
Total cations (meq/L) 86.4 82.3
Concentrations highlighted and In bold exceed the Site Ground Water Complaince Limit (GWCL)
(a) = Quarterly accelerated monitoring event
MW-5
Contaminant
GWQS GWCL
(Class 11)
MW-5 (Semi-Annual Monitoring)
Contaminant
GWQS GWCL
(Class 11) 2nd Qtr. 2010
April •: June
4/26/2010
4th Qtr. 2010
Oct. - Dec.
11/11/2010
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 1.02 0.53 0.54
Nitrate + Nitrite (as N) 10 2.5 <0.1 0.2
Heavy Metals (gg/L)
Arsenic 50 17 <5.0 <5.0
Beryllium 4 1 <0.50 <0.50
Cadmium 5 2 <0.50 <0.50
Chromium 100 25 <25 <25
Cobalt 730 182.5 <10 <10
Copper 1,300 ' 325 <10 <10
Iron 11,000 2,750 112 46
Lead 15 4.1 <1.0 <1.0
Manganese 800 376.74 245 252
Mercury 2 1 <0.50 <0.50
Molybdenum 40 10 <10 <10
Nickel 100 44.1 <20 <20
Selenium 50 12.5 <5.0 <5.0
Silver 100 25 <10 <10
Thallium 2 0.5 <0.50 <0.50
Tin 17,000 4,250 <100 <100
Uranium 30 7.5 0.39 11.6
Vanadium 60 15 <15 <15
Zinc 5,000 87.38 <10 <10
Radiologics (pCi/L)
Gross Alpha 15 1 3.75 1 *0.1 (+/-0.3) 1 *0.3(+/-0.08)
VOC (gg/L)
Acetone 700 175 <20 <20
Benzene 5 1.25 <1.0 <1.0
2-Butanone (MEK) 4,000 1,000 <20 <20
Carbon Tetrachloride 5 1.25 <1.0 <1.0
Chloroform 70 17.5 <1.0 <1.0
Chloromethane 30 7.5 <1.0 <1.0
Dichloromethane 5 1.25 <1.0 <1.0
Naphthalene 100 25 <1.0 <1.0
Tetrahydrofuran (THF) 46 11.5 7.1 1.31
Toluene 1,000 250 <1.0 <1.0
Xylenes (total) 10,000 2,500 <1.0 <1.0
Others
Field pH (S.U.) 6.5-8.5 6.5 - 8.5 7.15 7.31
Fluoride (mg/L) 4 1.42 0.92 0.92
Chloride (mg/L) 71 52 52
Sulfate (mg/L) 1,518 1,160 1,260
TDS (mg/L) 2,575 2,090 2,210
General Inorganics Listed in Part I.E.1.(c)(2)(ii)
Carbonate (mg/L) <1.0 <1.0
Bicarbonate (mg/L) 399 390
Sodium (mg/L) 519 487
Potassium (mg/L) 7.66 9.2
Magnesium (mg/L) 39.9 40.6
Calcium (mg/L) 140 ^ 146
Total anions (meq/L) 32.1 34.1
Total cations (meq/L) 33.1 32.1
MW-11
GWQS GWCL MW-11 (Quatterty Monitoring)
Contaminant (Class II) 1st Qtr. 2010 2nd Qtr. 2010 May June July August 3rd Qtr. 2010 October 4th Qtr. 2010 December
Jan. - March April - June '•'Monthly Accl. "'Monthly Accl. '"'Monthly Accl. '•'Monthly Accl. July - Sept. '•'Monthly Aod. Oct. - Dec. "'Monthly Accl.
2/10/2010 ~ 4/28/2010 5/24/2010 6/16/2010 7/20/2010 8/25/2010 9/8/2010 10/20/2010 11/11/2010 12/15/2010
Parameters Listed in Table 2
Nutrients (mq/U)
Ammonia (as N) 25 6.25 0.52 0.66 0,62 . 0.66
Nitrate + Nitrite (as N) 10 2:5 0.1 <0.1 <0.1 <0.1
Heavy Metals (ud/L)
Arsenic 50 15 <5.0 <5.0 <5.0 <5.0
Beryllium 4 1 <0.50 <0.50 <0.50 <0.50
Cadmium 5 1.25 <0.50 <0.50 <0.50 <0.50
Chromium 100 25 <25 <25 <25 <25
Cobalt 730 182.5 <10 <10 <10 <10
Copper i,3bo 325 <10 <10 , <10 <10
Iron 11,000 2,750 149 100 106 58
Lead 15 3.75 <1.0 <1.0 <1.0 <1.0
Manganese 800 131.29 134 137 122 99 - 122 • •; 138 128 •••v 141 133 ; 158
Mercury 2 0,5 <0.50 <0.50 <0.50 <0.50
Molybdenum 40 10 <10 <10 <10 <10
Nickel 100 46,2 <20 <20 <20 <20
Selenium 50 12.5 <5.0 <5.0 <5.0 <5,0
Silver 100 25 <10 <10 <10 <10
Thallium 2 0.5 <0.50 <0.50 <0.50 <0,S0
Tin 17,000 4.250 <iob <100 <100 <100
Uranium 30 7.5 0.92 0.96 1.06 0,87 "
Vanadium 60 15 <15 <15 <15 <15
Zinc 5,000 1,250 <10 <10 <10 <10
Radiologics (pCi/L)
'• • . • ^_ • Gross Alpha 15 3.75 •0.6 (+/- 0.4) •0.3 (+/- 0.3) i •0.6 (+/- 0.5) •0,2 (+/- 0,08)
VOC(ug/U
Acetone 700 175 <20 <20 <20 <20
Benzene 5 1.25 <1.0 <1.0 <1.0 <1.0
2-Butanone (MEK) 4,000 1,000 <20 <20 <20 <20
Cartnn Tetrachloride 5 1.25 <1.0 <1.0 <1.0 <1.0
Chlorofoim 70 17.5 <1.0 <1.0 <1.0 <1.0
Chloromethane 30 7.5 <1.0 <1.0 <1.0 -=1.0
Dichloromethane 5 1.25 <i.b <1.0 <1.0 <1.0
Naptithajene 100 25 <1.0 <1.0 <1.0 <1.0
tetrahydrofuran (THF) 46 11.5 5.2 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 . <1.0 <1.0
toluene 1,000 250 <1.0 <1.0 <i.o-<1.0
Xylenes (total) 10,000 2,500 <1.0 <1.0 <1.0 <1.0
Others
Field pH (S.U.) 6.5 - 8.5 6.5 - 8.5 7.44 7.22 7.29 8.21 7.51 7.32 8.34 7.49 7.44 7.37
Fluoride (mg/L) 4 1 0.51 0.49 0.52 0.49
Chloride (mg/L) 39.16 33 32 31 - 34
Sulfate (mg/L) 1,309 1,140 1,150 1,140 1,180
TbS(mg/L) 2,528 2,040 2,040 1,960 2,020
General Inorqanics Listed in Partl.E.1.{oX2Xii)
Carbonate (mg/L) <1.0 5 <1.0 <1.0
Bicarbonate (mg/L) 410 387 410 387
Sodium (mg/L) 567 642 614 573
Potassium (mg/L) 6,8 7.13. 7 6.9
Magnesium (mg/L) 19.7 23.1 20.9 20.1
Calcium (mg/L) 67 75.9 70 68
Total anions (mec|/L) 31.3 31.5 31.3 31.8 ~
Total cations (meq/L) 29.9 33.8 32.1 30.2
Concentrations hiohlightod and in bold exceed the Site Ground Water Complainca Limit (GWCL)
(a) = Monthly accelerated monitoring evenX
MW-12
GWQS GWCL MW-12 (Semi-Annual Monitorinq)
Contaminant (Class III) 2nd Qtr. 2010
April - June
4/27/2010
3rd Qtr. 2010
'°'july - Sept.
9/20/2010
4th Qtr. 2010
Oct. - Dec.
11/19/2010
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 0.6 0.14 0.12
Nitrate + Nitrite (as N) 10 5 <0.1 <0.1
Heavy Metals (gq/L)
Arsenic 50 25 <5.0 <5.0
Beryllium 4 2 <0.50 <0.50
Cadmium 5 7 <0.50 <0.50
Chromium 100 . 50 <25 <25
Cobalt 730 365 <10 <10.
Copper 1,300 650 <10 <io •
Iron 11,000 5,500 <30 <30
Lead 15 7.5 <1.0 <1.0
Manganese 800 2,088.80 135 220
Mercury 2 1 <0.50 <0.50
Molybdenum 40 20 <10 <10
Nickel 100 60 <20 <20
Selenium 50 25 '•X:. -:^:25i7- .:. 31.9 27 JB
Silver 100 50 <10 <10
Thallium 2 1 <0.50 <0.50
Tin 17,000 8,500 <100 <100
Uranium 30 23.5 19.8 18
Vanadium 60 30 <15 <15
Zinc 5,000 2,500 18 <10
Radiologics (pCi/L)
Gross Alpha 15 7.5 *0.1 (+/-0.3) •0;5 {+/- 0.6)
VOC (gg/L)
Acetone 700 350 <20 <20
Benzene 5 2.5 <1.0 • <1.0'
2-Butanone (MEK) 4,000 2,000 <20 <20
Carbon Tetrachloride 5 2.5 <1.0 <1.0
Chloroform 70 35 <1.0 <1.0
Chloromethane 30 15 <1.0 <1.0
Dichloromethane 5 2.5 <1.0 <1.0
Naphthalene 100 50 <1.0 <1.0
Tetrahydrofuran (THF) 46 23 1.8 <1.0
Toluene 1,000 500 <1.0 <1.0
Xylenes (total) 10,000 5,000 <1.0 <1.0
Others
Field pH (S.U.) 6.5 - 8.5 6.5-8.5 7.16 6.62 6.47
Fluoride (mg/L) 4 2 0.25 0.26
Chloride (mg/L) 80.5 64 63
Sulfate (mg/L) 2,560 2,390 2,480
TDS (mg/L) 4,323 3,960 3,850
General Inorganics Listed in Part I.E. 1.(c)(2)(ii)
Carbonate (mg/L) <1.0 <1.0
Bicarbonate (mg/L) 442 421
Sodium (mg/L) 317 306
Potassium (mg/L) 12.7 12.7
Magnesium (mg/L) 215 214
Calcium (mg/L) 522 510
Total anions (meq/L) 58.9 60.3
Total cations (meq/L) 57.9 56.7
Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL)
(a) = Quarteriy accelerated monitoring event
MW-14
GWQS GWCL MW-14 (Quarteriy Monitoring)
Contaminant (Class III) 1st Qtr. 2010 2nd Qtr. 2010 May June July August 3rd Qtr. 2010 October 4th Qtr. 2010 December
Jan. - March
2/2/2010
April - June
4/21/2010
'•'Monthly Accl.
. 5/21/2010
'"'Monthly Accl.
6/16/2010
""Monthly Accl.
, 7/20/2010
'"Monthly Accl.
8/25/2010
July - Sept.
9/8/2010
'•'Monthly Accl.
10/20/2010
Oct. - Dec.
ii/ib/ioio
'•'Monthly Accl.
12/15/2010
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 12.5 0.12 0.07 0.13 0.19
Nitrate + Nitrite (as N) 10 5 0.1 <0.1 <0.1 <0.1
Heavy Metals (ug/L)
Arsenic 50 25 <5.0 <5.0 <5.0 <5.0
Beryllium
Cadmjum
4
5
2
2.5
<0.50
1.04
<0.50
1.16
<0.50
1.15
<0.50
1.1
Chromium 100 50 <25 <25 <25 <25
Cobalt 730 365 <10 <10 <10 <10
Copper 1,300 650 <10 <10 <10 <10
Iron 11,000 5,500 <30 <30 <30 <30
Lead 15 7.5 <1.0 <i.b <1.0 <1.0 .
Manganese 800 2,230.30 2,060 2,070 1,920 1,980
Mercury 2 1 <0.50 <0.50 <0.50 <0.50 •
Molybdenum 40 25 <10 <10 <10 <10
Nickel 100 50 <20 <20 <20 <20
Selenium 50 25 <5.0 <5.0 . <5.0 <5.0
Silver 100 50 <10 <10 <10 .<10
Thallium 2 . 1 <6.50 <0.50 <0.50 <0.50
Tin 17,000 8,500 <100 <100 <100 <100
Uranium 30 98 62.4 60.6 56 62.2
Vanadium 60 30 <15 <15 <25 ~'<15
Zinc 5,000 35.04 11 25 13 12
Radiologics (pCi/L)
Gross Alpha 15 7.5 •0.4 (+/-0.3) 1 *0.7(+/-0.5) 1 1 1 - 1 •0.7(+/-0.5) 1 *0.3(+/-0.09) 1
VOC (ua/L)
Acetone 700 350 <20 <20 <20 . <20
Benzene 5 2.5 <1.0 <i.b - <1.0 <1.0 .
2-Butanone (MEK) 4,000 2,000 <20 <20 <20 <20
Cart3on Tetrachloride 5 2.5 <1.0 <1.0 <1.0 <1.0 .
Chloroform 70 35 <1.0 <1.0 <1.0 <1.0'
Chloromethane 30 15 <1.0 <1.0 <1.0 <1.0
Dichloromethane 5 2.5 <1.0 <1.0 <1.0 <1.0
Niaphthalene
Tetrahydrofuran (THF)
Toluene
100
46
1,000
50
23
500
<1.0
<1.0
<1.0
<1.0 <1.6
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Xvlenes (total) 10,000 5,000 <1.0 <1.0 <1.0 <1.0
others
Field pH (S.U.) 6.5 - 8.5 6.5 - 8.5 vv-6.46 • : •. 6.29 •i; :•• .6.36^,:,.= ... y:^::,:-: 6.45 7.19 . 6.51 6.60 6.37 6.47
Fluoride (mg/L) 4 0.2 0.15 0.16 0.17 0.15
Chloride (mg/L) 27 17 17 18 18
Sulfate (mg/L) 2,330 2,280 2,210 2,200 2,170
TDS (mq/L) 4,062 3,590 3,570 3,580 3,510
General Inorganics Listed in Parti.E.I.(c)(2Xii) Carisonate (mg/L) <1.0 <1.0 <1.0 <1.0
Bicarbonate (mg/L) 500 486 503 480
Sodium (mg/L)
Potassium (mg/L)
335
11.9
342
11.6
348
. 11.8
318
11.5
Magnesium (mg/L) 148 145 148 144
Calcium (mg/L) 503 502 507 492
Total anions (meq/L) 56.1 54.5 54.5 53.5
Total cations (meq/L) 52.2 52.1 53 50.5
Concentrations in bold exceed the Site Ground Water Complaince Limit (GWCL) (a) - Monthly accelerated monitoring event
MW-15
1 GWQS GWCL MW-15 (Semi-Annual Monitoring)
Contaminant (Class III) 2nd Qtr. 2010 4th Qtr. 2010
April - June Oct. - Dec.
4/21/2010 ' 11/11/2010
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia'(as N) 25 0.21 <0.05 <0.05
Nitrate + Nitrite (as N) 10 0.27 0.2 0.1
Heavy Metals (gg/L)
Arsenic 50 25 <5.0 <5.0
Beryllium 4 2 <0.50 <0.50
Cadmium 5 2.5 <0.50 <0.50
Chromium 100 50 <25 <25
Cobalt 730 365 <10 <10
Copper 1,300 650 <10 <10
Iron 11,000 81.7 <30 <30
Lead 15 7.5 <1.0 <1.0
Manganese 800 400 <10 <10
Mercury 2 1 <0.50 <0.50
Molybdenum 40 30 <10 <10
Nickel 100 97 <20 <20
Selenium ' 50 128.7 100. 99.5
Silver 100 50 <10 <10
Thallium 2 1 <0.50 . <0.50
Tin 17,000 8;500 , <100 <100
Uranium 30 65.7 43.6 46.9
Vanadium 60 40 <1& <15
Zinc 5,000 2,500 21 <10
Radiologics (pCi/L)
Gross Alpha 15 7.5 *0.3 (+/- 0.4) *0.05 (+/- 0.07)
VOC (gg/L)
Acetone 700 350 <20 <20
Benzene 5 2.5 <1.0 <1.0
2-Butanone (MEK) 4,000 2,000 <20 <20
Carbon Tetrachloride 5 2.5 <1.0 <1.0
Chloroform 70 35 <1.0 <1.0
Chloromethane" 30 15 . <1.0 <1.0
Dichloromethane 5 2.5 <1.0 <1.0
Naphthalene 100 50 <1.0 <1.0
Tetrahydrofuran (THF) 46 23 <1.0 <1.0
Toluene 1,000 500 <1.0 • <1.0
Xylenes (total) 10,000 5,000 <1.0 <1.0
Others
Field pH (S.U.) 6.5 - 8.5 6.62-8.5 6.98 6.57
Fluoride (mg/L) 4 2 0.23 0.23
Chloride (mg/L) 57.1 35 41
Sulfate (mg/L) 2,549.02 2,400 2,350
TDS (mg/L) 4,530 3,860 3,850
General Inorganics Listed in Part I.E.1.(c)(2)(ii)
Carbonate (mg/L) <1.0 <1.0
Bicarbonate (mg/L) 453 446
Sodium (mg/L) 502 468
Potassium (mg/L) 10.6 10.5
Magnesium (mg/L) 155 148
Calcium (mg/L) 426 412
Total anions (meq/L) 58.3 57.5
Total cations (meq/L) 56.1 53.4
MW-17
Contaminant
GWQS GWCL
(Class 111)
MW-17 (Semi-Annual Monitoring)
Contaminant
GWQS GWCL
(Class 111) 2nd Qtr. 2010
April - June
5/3/2010
4th Qtr. 2010
Oct. - Dec.
11/17/2010
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 0.26 <0.05 0.07
Nitrate + Nitrite (as N) 10; 5 0.9 1.1
Heavy Metals (gg/L)
Arsenic 50 25 <5.0 <5.0
Beryllium 4 2 <0.50 <0.50
Cadmium 5 2.5 <0.50 <0.50
Chromium 100 50 <25 <25
Cobalt 730 365 <10 <10
Copper 1.300 650 <10 <10
Iron 11,000 5,500 31 <30
Lead 15 7.5 <1.0 <1.0
Manganese 800 915.4 184 164
Mercury 2 1 <0.50 <0.50
Molybdenum 40 20 <10 <10
Nickel 100 50 <20 <20
Selenium 50 .25 11.7 11.7
Silver 100 • 50 <10 <10
Thallium 2 1 0.58 0.51
Tin 17,000 8,500 <100 <100
Uranium 30 46.66 26.4 25.6
Vanadium 60 30 <15 <15 .
Zinc 5,000 2,500 25 <10
Radiologics (pCi/L)
Gross Alpha 15 1 2:8 1 *1.1 (+/-0.5) 1 *0.04 (+/-0.09)
VOC (gg/L)
Acetone 700 350 <20 <20
Benzene 5 2.5 <1.0 <1.0
2-Butanone (MEK) 4,000 2,000 <20 <20
Carbon Tetrachloride 5 2.5 <1.0 <1.0
Chloroform 70 35 • <1.0 <1.0
Chloromethane 30 15 <1.0 <1.0
Dichloromethane 5 2.5 <1.0 <1.0
Naphthalene 100 50 <1.0 <1.0
Tetrahydrofuran (THF) 46 23 <1.0 <1.0
Toluene 1,000 500 <1.0 <1.0
Xylenes (total) 10,000 5,000 <1.0 <1.0
Others
Field pH (S.U.) 6.5 -• 8.5 6.40 - 8.5 6.52 6.56
Fluoride (mg/L) 4 2 0.25 0.26
Chloride (mg/L) 46.8 35 38
Sulfate (mg/L) 2,860 2,480 2,340
TDS (mg/L) 5,085.42 4,030 3,860
General Inorganics Listed in Part I.E.I.(c)(2)(ii)
Carbonate (mg/L) <1.0 <1.0
Bicarbonate (mg/L) 499 478
Sodium (mg/L) 591 564
Potassium (mg/L) 11.2 11.9
Magnesium (mg/L) 169 171
Calcium (mg/L) 336 353
Total anions (meq/L) 60.9 57.7
Total cations (meq/L) 56.6 56.6
MW-18
GWQS GWCL MW-18 (Semi-Annual Monitoring)
Contaminant (Class III) 1st Qtr. 2010 2nd Qtr. 2010 3rd Qtr. 2010 4th Qtr. 2010
January
1/27/2010
March
3/22/2010
April - June
5/4/2010
<'>July-Sept.
9/15/2010
Oct.-Dec.
11/18/2010
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 0.27 <0.05 0.09
Nitrate + Nitrite (as N) 10 2.5 <0.1 <0.1
Heavy Metals (pg/L)
Arsenic 50 25 <5.0 <5.0
Beryllium 4 2 <0.50 <0.50
Cadmium 5 2.5 <0.50 <0.50
Chromium 100 50 <25 <25
Cobalt 730 365 <10 <10
Copper 1,300 650 <10 <10
Iron 11,000 414.68 104 94
Lead 15 7.5 <1.0
•
<1.0
Manganese 800 350 57 70
Mercury 2 1 <0.5d <0.50
Molybdenum 40 20 <10 ^<10
Nickel 100 50 <20 <20
Selenium 50 25 <5.0 <5.0
Silver 100 50 <10 <10
Thallium 2 1.95 3.32 ^^.^ 3.73 3.64 3.57
Tin 17,000 8,500 <100 <100
Uranium 30 55.1 47.2 49 44.3 42.7 -
Vanadium 60 30 <15 <15
Zinc 5,000 2,500 75 <10
Radiologics (pCi/L)
Gross Alpha 15 7.5 M.O (+/- 0.5) *1.1 (+/-0.7)
VOC (pg/L)
Acetone 700 ^350 <20 <20
Benzene ' 5 2.5 <1.0 <1.0
2-Butanone (MEK) 4,000 2,000 <20 <20
Carbon Tetrachloride 5 2.5 <1.0 <1.0
Chloroform 70 35 <1.0 <1.0
Chloromethane 30 15 <1.0 <1.0 :
Dichloromethane 5 2.5 <1.0 <1.0
Naphthalene 100 50 <1.0 <1.0
Tetrahydrofuran (THF) 46 23 <1.0 <1.0
Toluene 1,000 500 <1.0 <1.0
Xylenes (total) 10,000 5,000 <1.0 <1.0
Others
Field pH (S.U.) 6.5-8.5 6.25 - 8.5 6.37 6.21 6.20 7.23 6.37
Fluoride (mg/L) 4 0.45 0.19 0.22
Chloride (mg/L) 69.23 52 52
Sulfate (mg/L) 1,938.90 1,950 1,930 1,910
TDS (mg/L) 3,198.77 3.280 f 3,190 -3,030
General Inorganics Listed in Part I.E 1.(c)(2)(ii)
Carbonate (mg/L) <1.0 <1.0
Bicarbonate (mg/L) 478 469
Sodium (mg/L) - 172 174
Potassium (mg/L) 8.76 9.6
Magnesium (mg/L) . 127 126
Calcium (mg/L) 540 564
Total anions (meq/L) 49.8 49
Total cations (meq/L) 45.1 46.4
Note:
Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL)
MW-19
GWQS GWCL MW-19 (Semi-Annual Monitoring)
Contaminant (Class III) 1st Qtr. 2010 2nd Qtr. 2010 3rd Qtr. 2010 4th Qtr. 2010
Jan. - March April - June '^^July - Sept. Oct. - Dec.
1/26/2010 5/4/2010 9/15/2010 11/18/2010
Parameters Listed In Table 2
Nutrients (mg/L)
Ammonia (as N) 25 0.31 <0.05 <0.05
Nitrate + Nitrite (as N) 10 2.83 2.8 2.6 2.4
Heavy Metals (|jg/L)
Arsenic 50 25 <5.0 <5.0
Beryllium 4 2 <0.50 <0.50
Cadmium 5 2.5 <0.50 <0.50
Chromium 100 50 <25 <25
Cobalt 730 365 <10 <10
Copper 1,300 650 <10 <10
Iron 11,000 5,500 <30 <30 '
Lead 15 7.5 <1.0 <1.0
Manganese 800 400 <10 <10
Mercury 2 1 <0.50 <0.50
Molybdenum 40 20 <10 <10
Nickel 100 50 <20 <20
Selenium 50 28.96 11.6 10.8
Silver 100 50 <10 <10
Thallium 2 2.1 0.56 0.55 <0.50
Tin 17,000 8,500 <100 <100
Uranium 30 21.43 7.56 6.93 6.48
Vanadium 60 30 <15 <15
Zinc 5,000 2,500 <10 <10
Radiologics (pCi/L)
Gross Alpha 15 2.36 *0.9 (+/- 0.5) *1.2 (+/-0.7)
VOC (ijg/L)
Acetone 700 350 <20 <20
Benzene 5 2.5 <1.0 <1.0
2-Butanone (MEK) 4.000 2,000 <20 <20
Carbon Tetrachloride 5 2.5 <1.0 <1.0
Chloroform 70 35 <1.0 <1.0
Chloromethane 30 15 <1.0 <1.0
Dichloromethane 5 2.5 <1.0 <1.0
Naphthalene 100 50 <1.0 <1.0
Tetrahydrofuran (THF) 46 23 <1.0 <1.0
Toluene 1,000 500 <1.0 <1.0
Xylenes (total) 10,000 5,000 <1.0 <1.0
Others
Field pH (S.U.) 6.5-8.5 6.78 - 8.5 6.87 6.61 6.92 6.80
Fluoride (mg/L) 4 1.39 1 0.98 1
Chloride (mg/L) 104.41 28 25
Sulfate (mg/L) 2,534.10 543 552
TDS (mg/L) 4,257.42 1,130 1,010
General Inorganics Listed in Part I.E.I .(c)(2)(ii)
Carbonate (mg/L) <1.0 <1.0
Bicarbonate (mg/L) 273 271
Sodium (mg/L) 107 98.9
Potassium (mg/L) 4.22 4.2
Magnesium (mg/L) 49.6 49.5
Calcium (mg/L) 150 152
Total anions (meq/L) 16.8 16.9
Total cations (meq/L) 16.3 16
Note:
Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL)
(a) = Quarteriy accelerated monitoring event
MW-20
GWQS MW-20 (Quarterly Monitorinq)
Contaminant (Class III) 1st Qtr. 2010 2nd Qtr. 2010 3rd Qtr. 2010 4th Qtr. 2010
Jan. - March April - June July - Sept. Oct. - Dec.
2/11/2010 5/27/2010 9/16/2010 11/22/2010
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 <0.05 <0.05 0.07 0.1
Nitrate + Nitrite (as N) 10 6.5 8.4 7.7 6.8 ^
Heavy Metals (pg/L)
Arsenic 50 <5.0 <5.0 <5.0 <5.0
Beryllium 4 <0.50 <0.50 <0.50 <0.50
Cadmium 5 <0.50 <0.50 <0.50 <0.50
Chromium 100 <25 <25 <25 <25
Cobalt 730 <10 <10 <10 <10
Copper 1,300 <10 <10 <10 <10
Iron 11,000 <30 <30 <30 <30
Lead 15 <1.0 <1.0 <1.0 <1.0
Manganese 800 25 13 <10 <10
Mercury 2 <0.50 <0.50 <0.50 <0.50
Molybdenum 40 <10 <10 <10 <10
Nickel 100 <20 <20 <20 <20
Selenium 50 <5.0 <5.0 <5.0 <5.0
Silver 100 <10 <10 <10 <10
Thallium 2 0.58 0.58 <0.50 <0.50
Tin 17,000 <100 <100 <100 <100
Uranium 30 , 10.2 8.46 8.26 8.25
Vanadium 60 <15 <15 <25 <15
Zinc 5,000 92 27 38 24
Radiologics (pCi/L)
Gross Alpha 15 *0.7(+/- 0.4) *0.3 (+/- 0.4) *0.7 (+/- 0.5) *2.8{+/-1.0)
VOC (pg/L)
Acetone 700 <20 <20 <20 . <20
Benzene 5 <1.0 <1.0 <1.0 <1.0
2-Butanone (MEK) 4,000 <20 <20 <20 <20
Carbon Tetrachloride 5 <1.0 . <1.0 <1.0 <1.0
Chloroform 70 <1.0 <1.0 <1.0 <1.0
Chloromethane 30 <1.0 <1.0 <1.0 <1.0
Dichloromethane 5 <1.0 <1.0 <1.0 <1.0
Naphthalene 100 <1.0 <1.0 <1.0 <i.o •
Tetrahydrofuran (THF) 46 <1.0 <1.0 <1.0 <1.0
Toluene 1,000 <1.0 <1.0 <1.0 4.6
Xylenes (total) 10,000 <1.0 <1.0 <1.0 3.4
Others
Field pH (S.U.) 6.5-8.5 7.05 6.95 7.16 7.25
Fluoride (mg/L) 4 0.33 0.37 0.36 0.36
Chloride (mg/L) 70 57 65 64
Sulfate (mg/L) 4,130 4,050 3.580 3,570
TDS (mg/L) 5,150 5,610 5,540 5,280
General Inorganics Listed in Part I.E.I .(c)(2)(ii)
Cart>onate (mg/L) <1.0 <1.0 <1.0 <1.0
Bicarbonate (mg/L) 235 231 232 226
Sodium (mg/L) 1,370 1.340 1,360 1,280
Potassium (mg/L) 48 45.5 47.2 44.5
Magnesium (mg/L) 90.8 88.8 92.1 85.2
Calcium (mg/L) 349 340 352 330
Total anions (meq/L) 92.3 89.8 80.7 80.4
Total cations (meq/L) , 85.8 83.7 85.3 80.4
Note:
GWCLs are not established at Monitoring Well
Concentrations highlighted and in bold exceed
MW-20 because the well Is a General Monitoring Well rather than a POC Well
the Site Ground Water Quality Standard (GWQS)
MW-22
GWQS MW-22 (Quarterly Monitorinq)
Contaminant (Class III) 1st Qtr. 2010 2nd Qtr. 2010 3rd Qtr. 2010 4th Qtr. 2010
Jan. - March April - June July - Sept. Oct. - Dec.
2/8/2010 5/5/2010 9/7/2010 11/16/2010
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 0.59 0.66 0.81 0.27
Nitrate + Nitrite (as N) 10 2.7 3.1 2.3 0.3
Heavy Metals (pg/L)
Arsenic 50 <5.0 <5.0 <5.0 <5.0
Beryllium 4 3.15 2.88 2.71 2.22
Cadmium 5 92.2 93 83.3 86.7
Chromium 100 <25 <25 <25 <25
Cobalt 730 294 284 238 281
Copper 1,300 <10 19 12 <10
Iron 11.000 <30 <30 <30 41
Lead 15 1.1 1.1 <1.0 <1.0
Manganese 800 31,300 33,400 29,200 28,500
Mercury 2 0.56 <0.50 <0.50 <0.50
Molybdenum 40 494 :..:;:X.-596...::..:;h.-622 698
Nickel 100 :r,'i36::.::::i o:iii2-' 132
Selenium 50 9.8 16.4 ^z 8.8
Silver 100 <10 <10 <10 <10
Thallium 2 1.5 1.21 <0.50 1
Tin 17,000 <100 <100 <100 <100
Uranium 30 ^ v.-V*-45:5 • .• 48.6 44.9
Vanadium 60 <15 <15 <15 <15
Zinc 5,000 606 603 390 485
Radiologics (pCI/L)
Gross Alpha . 15 *3.1 (+/- 0.8) 1 6.5 (+/- 1.0) 8.6(+/-1:2) 2.2 (+/- 0.2)
VOC (pg/L)
Acetone 700 <20 <20 <20 <20 -
Benzene 5 <1.0 <1.0 <1.0 ' <1.0
2-Butanone (MEK) 4,000 <20 <20 <20 <20
Cai^bon Tetrachloride 5 <1.0 <1.0 <1.0 <1.0
Chloroform 70 <1.0 <1.0 <1.0 <1.0
Chloromethane 30 <1.0 <1.0 <1.0 <1.0
Dichloromethane 5 <1.0 <1.0 <1.0 .<1.0,
Naphthalene 100 <1.0 <1.0 <1.0 <1.0
Tetrahydrofuran (THF) 46 <1.0 <1.0 <1.0 <1.0
Toluene 1.000 <1.0 <1.0 <1.0 <1.0
Xylenes (total) 10.000 <1.0 <1.0 <1.0, <1.0
Others
Field pH (S.U.) 6.5-8.5 5.59 5.58 5.82 5.62
Fluoride (mg/L) 4 3.09 3.27 2.89 2.95
Chloride (mg/L) 61 59 56 65
Sulfate (mg/L) 4.990 5.330 4,660 4,890
TDS (mg/L) 6.920 7,750 6,700 7,130
General Inorganics Listed in Part I.E.I .(c)(2)(li)
Carbonate (mg/L) <1.0 <1.0 <1;0 <1.0
Bicarbonate (mg/L) 532 525 590 565
Sodium (mg/L) 248 271 266 252
Potassium (mg/L) 23.8 22.9 21.6 22.6
Magnesium (mg/L) 942 991 860 890
Calcium (mg/L) 439 472 441 449
Total anions (meq/L) 115 122 109 113
Total cations (meq/L) 111 118 105 107
Note:
GWCLs are not established at Monitoring Well
Concentrations highlighted and in bold exceed
MW-22 because the well is a General Monitoring Well rather than a POC Well
the Site Ground Water Quality Standard (GWQS)
MW-23
Contaminant
GWQS GWCL
(Class III)
MW-23 (Semi-Annual Monitoring)
Contaminant
GWQS GWCL
(Class III) 2nd Qtr. 2010
April - June
4/22/2010 .
3rd Qtr. 2010
<*'july - Sept
9/14/2010
4th Qtr. 2010
Oct. - Dec.
11/22/2010
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 0.6 <0.05 <0.05
Nitrate + Nitrite (as N) 10 5 0.2 0.2
Heavy Metals (gg/L)
Arsenic 50 25 <5.0 <5.0
Beryllium 4 2 <0.50 <0.50
Cadmium 5 2.5 <0.50 <0.50
Chromium 100 50 <25 <25
Cobalt 730 365 <10 <10
Copper 1,300 650 <10 <10
Iron 11,000 5,500 104 <30
Lead 15 7.5 <1.0 <1.0
Manganese 800 550 184 65
Mercury 2 1 <0.50 <0.50
Molybdenum 40 20 <10 <10
Nickel 100 50 <20 <20
Selenium 50 25 <5.0 <5.0
Silver 100 50 <10 <10
Thallium 2 1.5 0.69 0.51
Tin 17,000 8,500 <100 <100
Uranium 30 32 14.9 12.5
Vanadium 60 30 <15 <15
Zinc 5,000 74 47 15
Radiologics (pCi/L)
Gross Alpha 15 1 2.86 1 *2.3(+/-0.6) j. I *1.8(+/-0.9)
VOC (gg/L)
Acetone 700 350 <20 <20
Benzene 5 2.5 <1.0 <1.0
2-Butanone (MEK) 4,000 2,000 <20 <20
Carbon Tetrachloride 5 2.5 <1.0 <1.0,
Chlorofonn 70 35 <1.0 <1.0
Chloromethane 30 5.7 <1.0 . <1.0
Dichloromethane 5 2.5 <1.0 <1.0
Naphthalene 100 50 <1.0 <1.0
Tetrahydrofuran (THF) 46 23 <1.0 <1.0
Toluene 1,000 500 <1.0 <1.0
Xylenes (total) 10,000 5,000 <1.0 <1.0
Others
Field pH(S.U.) 6.5-8.5 6.5 - 8.5 6.18 7.05 6 44
Fluoride (mg/L) 4 2 0.23 0.23
Chloride (mg/L) 10 7 9
Sulfate (mg/L) 2,524 2,340 2,280
TDS (mg/L) 3,670 3,600 3,560
General Inorganics Listed in Part I.E.I.(c)(2)(ii)
Carbonate (mg/L) <1.0 <1.0
Bicarbonate (mg/L) 310 309
Sodium (mg/L) 394 374
Potassium (mg/L) 10.3 9.9
Magnesium (mg/L) 144 144
Calcium (mg/L) 448 440
Total anions (meq/L) 54 52.7
Total cations (meq/L) 51.5 50.3
Note:
Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL)
(a) = Quarteriy accelerated monitoring event
MW-24
GWQS GWCL MW-24 (Semi-Annual Monitoring) i
' Contaminant (Class III) 2nd Qtr. 2010 3rd Qtr. 2010 4th Qtr. 2010
April - June '°>July- SepL Oct. - Dec.
5/6/2010 . 9/21/2010 11/17/2010
Parameters Listed in Table 2 "
Nutrients (mg/L)
Ammonia (as N) 25 7 0.51 0.71
Nitrate + Nitrite (as N) 10 5 <0.1 2.7
Heavy Metals (gg/L)
Arsenic 50 17 <5.0 <5.0
Beryllium 4 2 <0.50 . <0.50
Cadmium 5 \ 2.5 4.28 5.06 3.22 4
Chromium 100 50 <25 <25 ~
Cobalt 730 365 <10 <10
Copper 1,300 650 <10 <10
Iron 11,000 4,162 911 198
Lead 15 7.5 <1.0 <1.0
Manganese 800 7,507 4,530 4,480
Mercury 2 1 <0.50 <0.50 .
Molybdenum 40 20 <10 <10
Nickel 100 50 34 33
Selenium 50 25 5.8 <5.0
Silver 100 50 <10 <10
Thallium 2 1 1.3 ^.ST•:m.--\v 1.09
Tin 17.000 8,500 <100 <100
Uranium 30 11.9 1.02 1.44
Vanadium 60 30 <15 <15
Zinc 5,000 2,500 89 56
Radiologics (pCi/L)
Gross Alpha 15 7.5 •0.4 (+/- 0.4) *0.1 (+/-0.07)
VOC (gg/L)
Acetone 700 350 <20 <20 •
Benzene 5 2.5 <1.0 <1.0
2-Butanone (MEK) 4,000 2,000 <20 <20
Carbon Tetrachloride 5 2.5 <1.0 <1.0
Chloroform 70 35 <1.0 <1.0
Chloromethane 30 15 <1.0 <1.0"
Dichloromethane 5 2.5 <1.0 <1.0
Naphthalene 100 50 <1.0 <1.0
Tetrahydrofuran (THF) 46 23 <1.0 <1.0
Toluene 1,000 500 <1.0 <1.0
Xylenes (total) 10,000 5,000 <1.0 <1.0
Others
Field pH (S.U.) 6.5 - 8.5 6.5-8.5 tt. 5.78 6.64 6.10
Fluoride (mg/L) 4 0.36 0.14 0.18
Chloride (mg/L) 71 46 48
Sulfate (mg/L) 2,903 2,560 2,760
TDS (mg/L) 4,450 4,320 4,200
General Inorganics Listed in Part I.E.I.(c)(2)(ii)
Carbonate (mg/L) <1.0 <1.0
Bicarbonate (mg/L) 306 197
Sodium (mg/L) 510 475
Potassium (mg/L) 12.5 12.8
Magnesium (mg/L) 178 173
Calcium (mg/L) 485 478
Total anions (meq/L) 59.6 62.2
Total cations (meq/L) 61.3 59.1
Note:
Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL)
(a) = Quarterly accelerated monitoring event
MW-25
GWQS GWCL MW-25 (Quarterly Monitoring)
Contaminant (Class III) 1st Qtr. 2010 2nd Qtr. 2010 3rd Qtr. 2010 4th Qtr. 2010
Jan. - March April - June July-Sept. Oct. - Dec.
2/3/2010 4/28/2010 9/8/2010 11/10/2010
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 0.77 0.19 0.50 0.61 . 0.56
Nitrate + Nitrite (as N) 10 5 <0.1 <0.5 <0.1 <0.1
Heavy Metals (pg/L)
Arsenic 50 25 <5.0 <5.0 <5.0 <5.0
Beryllium 4 2 <0.50 <0.50 <0.50 <0.50
Cadmium 5 1.5 1.26 1.44 1.40 1.26
Chromium 100 50 <25 <25 <25 <25
Cobalt 730 365 <10 <10 <10 <10
Copper 1,300 650 <10 <10 <10 <10
Iron 11.000 5,500 <30 <30 <30 <30
Lead 15 7.5 <1.0 <1.0 <1.0 . <1.0
Manganese 800 1,806 1,560 1,650 1,580 1,530
Mercury 2 1 <0.50 <0.50 <0.50 <0.50
Molybdenum 40 20 <10 12 <10 <10
Nickel 100 50 <20 <20 <20 <20
Selenium 50 25 <5.0 <5.0 <5.0 <5.0
Silver 100 50 <10 <10 <10 <10
Thallium 2 1.1 0.96 1.04 0.99 0.86
Tin 17,000 8,500 <100 <100 <100 <100
Uranium 30 6.5 5.93 6.43 6.57 5.89
Vanadium 60 30 <15 <15 <15 <15
Zinc 5,000 2.500 <10 21 <10 <10
Radiologics (pCi/L)
Gross Alpha 15 7.5 *0.6 (+/- 0.3) *0.6 (+/- 0.4) *1.2 (+/-0.6) 0.7(+/-0.1)
VOC iug/L)
Acetone 700 350 <20 <20 <20 <20
Benzene 5 2,5 <1.0 <1.0 <1.0 <1.0
2-Butanone (MEK) 4,000 2,000 <20 <20 <20 <20
Carbon Tetrachloride 5 2.5 <1.0 <1.0 <1.0 <1.0
Chloroform 70 35 <1.0 <1.0 <1.0 <1.0
Chloromethane 30 15 <1.0 <1.0 <1.0 <1.0
Dichloromethane 5 2.5 <1.0 <1.0 <1.0 <1.0
Naphthalene 100 50 <1.0 <1.0 <1.0 <1.0
Tetrahydrofuran (THF) 46 23 <1.0 <1.0 <1.0 <1.0
Toluene 1,000 500 <1.0 <1.0 <1.0 <1.0
Xylenes (total) 10,000 5,000 <1.0 <1.0 <1.0 <1.0
Others
Field pH (S.U.) 6.5-8.5 6.5-8.5 6.59 7.20 6.58 6.36
Fluoride (mg/L) 4 0.42 0.31 0.33 0.34 0.31
Chloride (mg/L) 35 31 31 - 31 31
Sulfate (mg/L) 1,933 1,630 1,660 1,760 1,650
TDS (mg/L) 2,976 2,670 2,780 2,790 2,800 '
General Inorganics Listed in Part I.E.I.(c)(2)(ii)
Carbonate (mg/L) <1.0 <1.0 \<1.0 <1.0
Bicarbonate (mg/L) 432 424 435 413
Sodium (mg/L) 300 317 306 277
Potassium (mg/L) 9.5 9.74 9.6 9.3
Magnesium (mg/L) 116 122 125 116
Calcium (mg/L) 351 368 367 354
Total anions (meq/L) 41.9 42.4 44.6 42.1
Total cations (meq/L) 40.4 42.4 42.1 39.5
Note:
Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL)
(a) = monthly accelerated monitoring event
MW-26
GWQS • GWCL MW-26 (Quarteriy Monitorinq)
Contaminant (Class III) 1st Qtr. 2010 2nd Qtr. 2010 May June July August 3rd Qtr. 2010 October 4th Qtr. 2010 December
Jan. - March
2/2/2010
April - June
4/22/2010
'•'Monthly Accl.
5/24/2010
'•'Monthly Accl.
6/16/2010
'•'Monthly Accl.
7/21/2010
'•'Monthly Accl.
8/16/2010
July - SepL
9/16/2010
"'Monthly Accl.
10/20/2010
Oct. - Dec.
11/15/2010
'•'Monthly Accl.
12/15/2010
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 0.92 0.09 0.18 0.34 0.49
Nitrate + Nitrite (as N) 10 0.62 1.3 • 2.-..:-0.3 0.4 0.6 0.6 0:7 0.4 0.2 0.4
Heavy Metals (uq/L)
Arsenic 50 25 <5.0 <5.0 <5.0 <5.0
Beryllium 4 2 <b.5b <b.50 <0.50 <0.50
Cadmium 5 2.5 <0.50 <0.50 <0.50 <0.50
Chromium 100 50 <25 <25 <25 <25
Cobalt 730 365 <10 <10 <10 <ib Copper 1,300 650 <10 <10 <io-<10
Iron 11,000 2,675.83 485 513 405 278
Lead 15 7.5 <1.0 <1.0 <1.0 <1.0
Manganese
Mercury
800
2
1,610
1
1,350
<0.50
1,550
<0.5b
1,420
<0.50
1,080
<0.50
Molybdenum 40 20 <10 <ib <10 <10
Nickel 100 50 <20 <20 <20 <20
Selenium 50 25 9.1 8 6.3 <5.0
Silver 100 50 <10 <10 <10 <10
Thalliurn 2 1 <b.50 <0.50 <0.50 <0.50
Tin 17,000 8,500 <100 <100 <100 <100
Uranium 30 41.8 58.7 'Mr'-:• 37.4 36.6 34.4 71.8 72.7 37.5 30.4 29.6
Vanadium 60 30 <15 <15 <15 <15
Zinc 5,000 ^ 2,500 • <10 21 <10 <10
Radiologics (pCi/L)
Gross Alpha 15 4.69 *2.4 (+/- 0.5) 1 4.6 (+/- 0.9) •2.5 (+/-0.7) 2.2 (+/- 0.2)
VOC (UQ/L)
Acetone , 700 350 <20 <20 <20 <20 <20 <20 <20 <20 V <20
Benzene 5 2.5 <1.0 <1.0 <i!o <i:o <1.0 <1.0 <1.0 <1.0 <1.0
2-Butanone (MEK) 4,000 2,000 <20 <20 <20 <20 <20 <20 <20 <20 <20
Carbon Tetrachloride 5 5 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0
Chlorofonm 70 70 700 1.700 940 900 2,600 2,100 !f 1,000 1,900 1,400 :
Chloromethane 30 30 <1.0 <1.0 <1.0 , <1.0 <1.0 <1.0 <1.0 <1.0 <1.0
Dichloromethane 5 5 1 9.9 2.2 ••:. sSl2 -'-h. • 45 5.5 'y.'-'W: 1.2
Naphthalene
Tetrahydrofuran (THF)
lob
46
50
23
<ro
<1.0
<1.0
<1.0
<20
<1.0
<20 <20 <20
<1.0
<2b
<1.0
<20
<1.0
<20
<1.0
Toluene 1,000 50b <1.0 <1.0 <20 <20 <20 <20 <20 <20 <20
Xylenes (total) 10,000 5,000 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0
others
Field pH (S.U.) 6.5-8.5 6.74-8.5 6.69 7.18 ^ : 6.98 6.45 • 6.39 . 6.60 y:.: 6.61 6.49 6.45
Fluoride (mg/L) 4 2 0^29 0.27 0.27 0.28
Chloride (mg/L) 58.31 72 57 47 52 49 64 52 *s-P-:.':i-'. 52
Sulfate (mg/L) 2,082.06 1,840 1,960 2,010 1,880
TDS (mg/L) 3,284.19 3,100 3,280 3,440 • 3,140
General Inorganics Listed In Part I.E.I.(c)(2)(ii)
Carbonate (mg/L) • <1.0 <1.0 <1.0 <1.0
Bicarbonate (mg/L) 417 419 436 414
Sodium (mg/L) 173 169 178 213 '
Potassium (mg/L) 10.6 10.9 11 11
Magnesium (mg/L)
Calcium (mg/L)
165
495
158
501
166
506
153
474
Total anions (meq/L) 47.3 49.3 50.8 47.4
Total cations (meq/L) 46.1 45.6 — 47 45.9
Concentrations highlighted and in l»ld exceed the Site Ground Water Complaince Limit (GWCL)
(a) = Monthly accelerated monitoring event
MW-27
GWQS GWCL MW-27 (Semi-Annual Monitoring)
Contaminant (Class III) 1st Qtr. 2010 2nd Qtr. 2010 3rd Qtr. 2010 4th Qtr. 2010
Jan. - March April - June <*'july - Sept. Oct. - Dec.
.3/15/2010 5/3/2010 9/14/2010 11/12/2010
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 12.5 <0.05 <0.05
Nitrate + Nitrite (as N) 10 5.6 *.::.:.;..5.8..1i:.--5.9 5.7
Heavy Metals (jjg/L)
Arsenic 50 25 <5.0 <5.0
Beryllium 4 2 <0.50 <0.50
Cadmium 5 2.5 <0.50 <0.50
Chromium .100 50 <25 <25
Cobalt 730 365 <10 <10
Copper 1.300 650 <10 <10
Iron 11,000 5,500 <30 <30
Lead 15 7.5 <1.0 <1.0
Manganese 800 400 <10 <10
Mercury 2 1 <0.50 <0.50
Molybdenum 40 20 <10 <10
Nickel 100 50 <20 <20
Selenium 50 25 12.2 10
Silver 100 50 <10 <10
Thallium 2 1 <0.50 <0.50
Tin 17,000 8,500 <100 <100
Uranium 30 34 28.9 27.7
Vanadium 60 30 <15 <15
Zinc 5,000 2.500 <10 <10
Radiologics (pCi/L)
Gross Alpha 15 2 *1.6(+/-0.5) 1.0(+/-0.1)
VOC (gg/L)
Acetone 700 350 <20 <20
Benzene 5 2.5 <1.0 <1.0
2-Butanone (MEK) 4,000 2,000 <20 <20
Carbon Tetrachloride 5 2.5 <1.0 <1.0
Chloroform 70 35 <1.0 <1.0
Chloromethane 30 15 <1.0 <1.0
Dichloromethane 5 2.5 <1.0 <1.0
Naphthalene 100 50 <1.0 <1.0
Tetrahydrofuran (THF) 46 23 <1.0 <1.0
Toluene 1,000 500 <1.0 <1.0
Xylenes (total) 10,000 5,000 <1.0 <1.0
Others
Field pH (S.U.) 6.5-8.5 6.5 - 8.5 6.79 6.78 7.68 6.89
Fluoride (mg/L) 4 0.85 0.66 0.68
Chloride (mg/L) 38 ••••••••••::<^:i;.42^^-^^ 'iv^ • 42 Sf -45
Sulfate (mg/L) 462 469 461 452
TDS (mg/L) 1,075 1,080 1,160 1,060 1,110
General Inorganics Listed in Part I.E.1.(c)(2)(ii)
Carbonate (mg/L) <1.0 .<1.0
Bicarbonate (mg/L) 466 459
Sodium (mg/L) 71.9 65.8
Potassium (mg/L) 4.14 4.3
Magnesium (mg/L) 75.8 72.1
Calcium (mg/L) 173 167
Total anions (meq/L) 19 18.6
Total cations (meq/L) 18.1 17.2
Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL)
(a) = Quarterly accelerated monitoring event
MW-28
Contaminant
GWQS GWCL
(Class III)
MW-28 (Semi-Annual Monitoring)
Contaminant
GWQS GWCL
(Class III) 2nd Qtr. 2010
April - June
4/19/2010
3rd Qtr. 2010
<**July-Sept.
9/14/2010
4th Qtr. 2010
Oct. - Dec.
11/12/2010
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 12.5 0.1 0.17
Nitrate + Nitrite (as N) 10 5 0.2 0.2
Heavy Metals (gg/L)
Arsenic 50 21 11.9 11.9
Beryllium 4 2 <0.50 <0.50
Cadmium 5 5.2 4.2 4.11
Chromium 100 50 <25 <25
Cobalt 730 47 30 31
Copper 1,300 650 <10 <10
Iron 11.000 299 <30 42
Lead 15 7.5 <1.0 <1.0
Manganese 800 1,837 1.550 1,510
Mercury 2 1 <0.50 <0.50
Molybdenum 40 20 . <10 <0.50
Nickel 100 50 26 .28
Selenium 50 11.1 7.4 <5.0
Silver 100 50 <10 <10
Thallium 2 1 0.93 0.81
Tin 17,000 8,500 <100 <100
Uranium 30 4.9 3.36 3.45
Vanadium 60 30 <15 <15
Zinc 5.000 83 59 43
Radiologics (pCi/L)
Gross Alpha 15 1 2.42 1 •1.9(+/-0.6) 1 1 0.6(+/-0.1).
VOC (gg/L)
Acetone 700 350 <20 <20
Benzene 5 2.5 <1.0 <1.0
2-Butanone (MEK) 4.000 2,000 <20 <20
Carbon Tetrachloride 5 2.5 <1.0 •cl.O
Chloroform 70 35 <1.0 <1.0
Chloromethane 30 4.6 <1.0 <1.0
Dichloromethane 5 2.5 <1.0 <1.0
Naphthalene 100 50 <1.0 <1.0
Tetrahydrofuran (THF) 46 23' <1.0 <1.0
Toluene 1.000 500 <1.0 <1.0
Xylenes (total) 10,000 5,000 <1.0 <1.0
Others
Field pH (S.U.) 6.5-8.5 6.1 -8.5 5.67 5.91 5.72
Fluoride (mg/L) 4 0.73 ,0.6 0.58
Chloride (mg/L) 105 •:.^y..--:-m-:yy-:-:--.-. ^••106 ; • 107
Sulfate (mg/L) 2,533 2,310 2,290
TDS (mg/L) 3,852 3,670 3,630
General Inorganics Listed in Part I.E.1.(c)(2)(ii)
Carbonate (mg/L) <1.0 <1.0
Bicari3onate (mg/L) 158 157
Sodium (mg/L) 303 288
Potassium (mg/L) 11.4 11.7
Magnesium (mg/L) 163 162
Calcium (mg/L) 500 492
Total anions (meq/L) 53.7 53.2
Total cations (meq/L) 51.9 50.7
Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL)
(a) = Quarteriy accelerated monitoring event
MW-29
GWQS GWCL MW-29 (Semi-Annual Monitoring)
Contaminant (Class III) 2nd Qtr. 2010 4th Qtr. 2010
April - June Oct.-Dec.
4/27/2010 11/9/2010
Parameters Listed in Table 2
Nutrients (mg/L) ,
Ammonia (as N) 25 1.3 0.85 0.99
Nitrate + Nitrite (as N) 10 5 <0.1 <0.1
Heavy Metals (gg/L)
Arsenic 50 25 <5.0 <5.0
Beryllium 4 2 <0.50 <0.50
Cadmium 5 2.5 <0.50 <0.50
Chromium 100 50 <25 <25
Cobalt 730 365 <10 . <10
Copper 1,300 650 <10 <10
Iron 11,000 • 1,869 1,630 1,490
Lead 15 7.5 <1.0 <1.0
Manganese 800 5.624 4,820 4,890
Mercury 2 1 <0.50 <0.50
Molybdenum 40 20 <10 <10
Nickel 100 50 <20 <20
Selenium 50 25 • <5.0 <5.0
Silver 100 50 <10 <10
Thallium 2 1.2 <0.50 <0.50
Tin 17,000 8,500 <100 <100
Uranium 30 15 10.8 11.6
Vanadium 60 30 <15 <15
Zinc 5.000 30 25 20
Radiologics (pCi/L)
Gross Alpha 15 2 *0.8 (+/- 0.4) 0.7(+/-0.1)
VOC (gg/L)
Acetone ,700 350 <20 <20
Benzene 5 2.5 <1.0, <1.0
2-Butanone (MEK) 4.000 2,000 <20 <20
Carbon Tetrachloride 5 2.5 <1.0 <1.0
Chloroform 70 35 <1.0 <1.0
Chloromethane 30 15 <1.0 <1.0
Dichloromethane 5 2.5 <1.0 <1.0
Naphthalene 100 50 <1.0 <1.0
Tetrahydrofuran (THF) 46 23 <1.0 <1.0
Toluene 1,000 500 <1.0 <1.0
Xylenes (total) 10,000 5,000 <1.0 <1.0
Others
Field pH (S.U.) 6.5 - 8.5 6.46 - 8.5 6.82 6.17
Fluoride (mg/L) 4 1.1 0.76 0.74
Chloride (mg/L) 41 35 39
Sulfate (mg/L) 2,946. 2,770 2,690
TDS (mg/L) 4,400 4,400 4,390
General Inorganics Listed in Part I.E.1.(c)(2)(ii)
Carbonate (mg/L) <1.0 <1.0
Bicarbonate (mg/L) 358 355
Sodium (mg/L) 516 454
Potassium (mg/L) 17.4 17.4
Magnesium (mg/L) 225 211
Calcium (mg/L) 506 470
Total anions (meq/L) 64.6 62.9
Total cations (meq/L) 66.6 61.1
GWQS GWCL MW-30 (Quarterly Monitorinq)
Contaminant -(Class II) 1st Qtr 2010 2nd Qtr 2010 May June July August 3rd Qtr 2010 October 4th Citr, 2010 December
March April - June '•'Monthly Accl. '"Monthly Accl, '•'Monthly Accl, '•'Monthly Accl. July - Sept. '•'Monthly Accl. Oct, - Dec, '•'Monthly Accl.
2/8/2010 4/27/2010 5/24/2010 6/15/2010 7/21/2010 8/24/2010 9/14/2010 10/19/2010 11/6/2010 12/14/2010
Parameters Listed in Table 2
Nutrients (mq/L)
Ammonia (as N) 25 0.14 <0.05 <0.05 <0.05 0,05 -
Nitrate + Nitrite (as N) 10 2,5 16.1 16.8 16.3 16 • 16 ;:^':::':''<l^' • •|/t6 •• Heavy Metals (pq/L)
Arsenic 50 12.5 <5.0 <5.0 <5.0 , <5.0
Beryllium 4 1 <0.50 <0.50 <0.50 ' <0.50
Cadmium 5 1.25 <0.50 <0.50 <0.50 <0.50
Ctiromium 100 25 <25 <26 <25 <25
Cobalt 730 182.5 <10 <10 <10 <^o
Copper 1,300' 325 <10 . <10 <10 <10
Iron 11,000 2,750 86 108 92 70
Lead 15 3.75 <1.0 <i.b <1,0 <i.6 Manganese 800 61 43 38 40 36
Mercury 2 0.5 <0.50 <0.50 <0,50 <0.50
Molytxlenum 40 10 <10 <10 <10 <10
Nickel 100 25 <20 <20 <20 <20
Selenium 50 34 32 35.3 33,'6 32,6 32.4 32.2 30.5
Silver 100 25 <10 <10 <io • <10
Thallium 2 0.5 <0.50 <0.S0 <0.50 <0.50
Tin 17,000 4,250 <100 <100 <100 <100
Uranium 30 8.32 6.82 6.82 7.10 6.64
Vanadium 60 15 <15 <16 - <15 <15
Zinc 5,000 1,250 11 <10 <10 <10
Radiologics (pCi/L)
Gross Alpha 15v 3.75 •0.6 (+/- 0.4) •0,1 (+/-0.3) •0.6 (+/- 0,3) •0.2 (+/- 0.08)
VOC (Mg/L)
Acetone 700 175 <20 <20 <20 <20
Benzene 5 1.25 <1.0 <1.0 <1,0 <1.0
2-Butanon6 (MEK) 4,000 1,000 <20 <20' <20 <20
Carbon Tetrachloride 5 1.25 <1.0 <1.0 <1,0 <10
Chloroform 70 17,5 •=1.0 • <1.0 <1,0 <:1.0
Chloromethane 30 7.5 <1.0 <1,0 <1.0 <1,0
Dichloromethane . 5 1.25 <1.0 <1,0 <1.0 <1,0
Naphthalene 100 25 <1,0 «:1.0 <1,0 <1,0
Tetrahydrofuran (THF) 46 11.5 <1.0 <1.0 <1,0. <1.0
Toluene 1,000 250 <1.0 <1.0 <1.0 <1,0
Xylenes (total) 10,000 2,500 <1.0 <1.0 <1.0 <1 0
CMhers
FieldpH (S.U ) 6.5 - 8.5 6.5 - 8.5 6.65 6.55 6.62 7,47 6 80 6 73 6.80 6.77 6,75 6.65
Fluoride (mg/L) 4 0,51 0.35 0.35 0.36 0,36
Chloride (mg/L) 127 87 1 l'l 126
Sulfate (mg/L) 972 767 798 756 720
TDS (mg/L) 1,618 1,510 1,570 1,700 1,700
General Inorganics Listed in Part I.E.-I .(c)(2)(ii)
Cartwnate (mg/L) <1.0 <1.0 <1.0 <1.0
Bicarbonate (mg/L) ISS 186 200 160
Sodium (mg/L) 103 111 106 947
Potassium (mg/L) 6.9 7 14 e.e 6.9
Magnesium (mg/L) 65.1 71.6 67 64.1
Calcium (mg/L) 251 278 262 251
Total anions (meq/L) 24 22.6 23.3 22.8
total cations (meq/L) 22.5 24.7 23.4 "•22.1
Concantrations highlightad and In bold excood the Sita Ground Water Complainco Umlt (GWCL)
(a) = Monthly accelerated monitoring event
GWCJS GWCL MW-31 (Quarteriy Monitorinq)
Contaminant (Class III) 1st Qtr 2010 2nd Qtr. 2010 May June July August' 3n1 Qtr. 2010 October 4th Qtr 2010 ' Decemt>er
Jan, - March April - June '•'Monthly Accl. '•'Monthly Accl. '•'Monthly Accl. '"Monthly Accl. July - Sept. '•'Monthly Accl. Oct. - Dec. '•'Monthly Accl
2/9/2010 4/20/2010 6/21/2010 6/15/2010 7/21/2010 8/24/2010 9/13/2010 10/18/2010 11/9/2010 12/14/2010
Parameters Listed in Tabla 2
Nutrients (mq/L)
Ammonia (as N) 25 12,5 <0.05 <0.05 <0.05 <0.06
Nitrate + Nitrite (as N) 10 5 • 21.7 ^22.B.::.-y.:!-L 21.1 • 20 ••. 22 • .-v,;... '21 .....••i'; •=ff- 20 . ; . iOy-yM 20
Heavy Metals (pq/L)
Ar^nic 50 25 <5.0 <6.0 <5.0 <5.0
Beryllium 4 2 <0,60 <0.50 <0,50 <0.50
Cadmium 5 2.5 <0.60 <0.50 <0.50 <0.50
Chromium 100 50 • <25 <25 <25 <25 Cobalt 730 365 <10 <10 <10 . <10
Copper 1,300 650 <10 <10 <10 <10
Iron 11,000 5.500 <30 <30 <30 <30
Lead 15 7.6 <1.0 <1.0 <1.0 <i 0
Manganese 600 400 <10 <10 <10 <10
Mercury 2 1 <0.50 <0.60 • <0.50 <0.60
Molybdenum 40 20 <10 <10 <10 <10
Nickel 100 50 <20 <20 <20 ''<20
Selenium 60 71 60.8 58.6 64.4 60
Silver . 100 50 <10 <10 <10 <10
Thallium 2 1 <0.50 <0 50 <0.50 <0.60
Tin 17,000 8,600 <iob <100 <100 <100
Uranium 30 9.1 7 '2 6 74 7.23 6.72
Vanadium 60 30 <15 <15 <15 <16
Zinc 5,000 2,500 <10 <10 <10 <10
Radiologics (pCi/L)
Gross Alpha 15 7.6 •0.7 (+/- 0.4) •0.8 (+/- 0.5) *0.5 (+/- 0.4) •0.4 (+/- 0.09)
VOC (pg/L)
Acetone 700 360 <20 <20 <20 <20
Benzene . 5 2.6 *10 <1.0 <1 0 <1.0
2-Butanone (MEK) 4,000 2,000 <20 <20 <20 <20 .
Carbon Tetrachloride 5 2.5 <1.0 <1.0 <1.0 <1.0
Chloroform 70 35 <1 0 <1.0 <i.o' <i.b
Chlommethane 30 6.1 <1 0 ti.b <1 0 «:1.0
Dichloromethane 5 2,5 <1.0 <1.0 <1,0 , <i,b'
Naphthalene 100 50 <1.0 <1.0 <1 0 <i:o
TetiBhydrofuran (THF) 46 23 <1.0 <1.0 <1,0 <vb Toluene i.ooo 500 <1.0 <i.6 <1,0 <1.0
Xylenes (total) 10,000 5,000 <1.0 <1,0 <1.0 <1.0
Others
Field pH (S.U.) 6.5-8.6 6,5-8.5 6.96 7.38 6,95 7.01 7.80 7.10 7,66 6.92 6.98 6.96
i^luoride (mg/L) 4 2 0.88 0.84 0.89 0.84
Chloride (mg/L) 143 128 128 139 138'
Sulfate (mg/L) 632 507 622 527 639
TDS (mg/L) 1,320 1,150 1,220 1,330 1,320
General Inorganics Listed in Part I.E.1.(c)(2)(ii)
Carbonate (mg/L) <1.0 <1.0 <1,0 <1.0
Bicaibonate (mg/L) 224 220 226 216
Sodium (mg/L) 02.2 91.3 91 85.4
Potassium (mg/L) 6.2 5.8 5 7 5.9
Magnesium (mg/L) 80.2 78.4 78.1 77,8
Calcium (mg/L) 170 162 164 166
Total anions (meq/L) 19.4 18.1 20.1 ' 20.1
Total cations (meq/L) 19,3 18.8 18.7 18.5
Concentrations hghlighted end in bold exceed the Site Ground Water ComplBince Limit (GWCL) (a) = Monthly accelerated monitoring event
MW-32
GWQS GWCL MW-32 (Semi-Annual Monitoring)
Contaminant (Class III) 2nd Qtr. 2010 3rd Qtr. 2010 4th Qtr. 2010
April - June "'July - Sept. Oct. - Dec.
4/20/2010 9/13/2010 11/10/2010
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 1.17 0.72 1.04
Nitrate + Nitrite (as N) 10 5 <0.1 <0.1
Heavy Metals (pg/L)
Arsenic 50 25 <5.0 <5.0
Beryllium 4 2 <0.50 <0.50
Cadmium 5 4.72 1.10 0.78
Chromium 100 50 <25 <25
Cobalt 730 75.21 41 46
Copper 1,300 650 <10 <10
Iron 11,000 14.060 6,200 6,200
Lead 15 7.5 <1.0 <1.0
Manganese 800 5,594.90 5,150 5,090
Mercury 2 1 <0.50 <0.50
MolytxJenum 40 20 <10 <10
Nickel 100 94 49 ^ 49
Selenium "50 25 <5.0 <5.0
Silver 100 50 <10 <10
Thallium 2 1 <0.50 <0.50
Tin ' 17.000 8.500 <100 <100
Uranium 30 5.26 2.17 2.11
Vanadium 60 30 <15 <15
Zinc 5,000 230 105 81
Radiologics (pCi/L)
Gross Alpha 15 3.33 *4.5(*/-0.9) *2.9 (+/- 0.7) 1.4 (+/- 0.1)
VOC (pg/L)
Acetone 700 350 <20 <20
Benzene 5 2.5 <1.0 <1.0
2-Butanone (MEK) 4.000 2,000 <20 <20
Carbon Tetrachloride 5 2.5 <1.0 <1.0
Chloroform 70 35 <1.0 <1.0
Chloromethane 30 15 <1.0 <1.0
Oichlorometfiane 5 2.5 <1.0 <1.0
Naphthalene 100 50 <1.0 <1.0
Tetrahydrofuran (THF) 46 23 <1.0 <1.0
Toluene 1,000 500 <1.0 <1.0
Xylenes (total) 10,000 5.000 <1.0 <1.0
Others
Field pH (S.U.) 6.5-8.5 6.4-8.5 6.03 6.33 6.05
Fluoride (mg/L) 4 , 2 0.18 0.19
Chloride (mg/L) 35.39 30 35
Sulfate (mg/L) 2,556.70 2,390 2,330
TDS (mg/L) 3,960 3,750 3,690
General Inorganics Listed in Part I.E. 1.(c)(2)(ii)
Carbonate (mg/L) <1.0 <1.0
Bicarbonate (mg/L) 486 483
Sodium (mg/L) 235 218
Potassium (mg/L) 14.4 14.4
Magnesium (mg/L) 217 211
Calcium (mg/L) 514 498
Total anions (meq/L) 58.6 57.4
Total cations (meq/L) 54.1 52.2
Concentrations highlighted and in t)old exceed the Site Ground Water Complaince Limit (GWCL)
(a) = Quarteriy accelerated monitoring event
MW-34
Contaminant
GWQS
4th Qtr. 2010
Oct. - Dec.
11/29/2010
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 0.15
Nitrate + Nitrite (as N) 10 0.3
Heavy Metals {\iglL)
Arsenic. 50 <5.0
Beryllium 4 <0.50
Cadmium 5 <0.50
Chromium 100 <25
Cobalt 730 <10
Copper 1,300 <10
Iron 11,000 32
Lead 15 <1.0
Manganese 800 247
Mercury 2 <0.50
Molybdenum 40 <10
Nickel 100 <20
Selenium 50 128
Silver 100 <10
Thallium 2 0.73
Tin 17,000 <10
Uranium 30 27.4
Vanadium 60 <15
Zinc 5,000 <10
Radiologics (pCi/L)
Gross Alpha 15 1 *1.5(+/-0.8)
VOC (pg/L)
Acetone 700 <20
Benzene 5 <1.0
2-Butanone (MEK) 4,000 <20
Carbon Tetrachloride 5 <1.0
Chloroform 70 <1.0
Chloromethane 30 <1.0
Dichloromethane 5 <1.0
Naphthalene 100 <1.0
Tetrahydrofuran (THF) 46 <1.0
Toluene 1,000 1.1
Xylenes (total) 10,000 1.4
Others
Field pH (S.U.) 6.5-8.5 7.39
Fluoride (mg/L) 4 0.54
Chloride (mg/L) 69
Sulfate (mg/L) 2,280
TDS (mg/L) 3,720
General Inorganics Listed in Part I.E.1.(c)(2)(ii)
Carbonate (mg/L) <1.0
Bicarbonate (mg/L) 335
Sodium (mg/L) 398
Potassium (mg/L) 13.8
Magnesium (mg/L) 144
Calcium (mg/L) 492
Total anions (meq/L) 54.8
Total cations (meq/L) 54.1
Note:
Monitoring Well MW-34 is neither a POC or General Monitoring Well
It is used strictly for tiead monitoring purposes
MW-35
Contaminant
GWQS GWCL
(Class II) 4th Qtr. 2010<^^
Oct. - Dec.
11/10/2010
Parameters Listed In Table 2
Nutrients (mg/L)
Ammonia (as N) 25 6.25 0.31
Nitrate + Nitrite (as N) 10 2.5 <0.1
Heavy Metals (pg/L)
Arsenic 50 12.5 <5.0
Beryllium 4 1 <0.50
Cadmium 5 1.25 <0.50
Chromium 100 25 <25
Cobalt 730 182.5 18
Copper 1,300 325 <10
Iron 11,000 2,750 388
Lead 15 3.75 <1.0
Manganese 800 200 698
Mercury 2 0.5 <0.50
Molybdenum 40 10 <10
Nickel 100 25 26
Selenium 50 12.5 <5.0
Silver 100 25 <10
Thallium 2 0.5 1.14
Tin 17,000 4,250 <100
Uranium 30 7.5 27.2
Vanadium 60 15 <15
Zinc 5,000 1,250 14
Radiologics (pCi/L)
Gross Alpha 15 1 3.75 1 2.6 (•!•/-0.2)
VOC (pg/L)
Acetone 700 175 <20
Benzene 5 1.25 <1.0
2-Butanone (MEK) 4,000 1,000 <20
Carbon Tetrachloride 5 1.25 <1.0
Chloroform 70 17.5 <1.0
Chloromethane 30 7.5 <1.0
Dichloromethane 5 1.25 <1.0
Naphthalene 100 25 <1.0
Tetrahydrofuran (THF) 46 11.5 <1.0
Toluene 1,000 250 <1.0
Xylenes (total) 10,000 2,500 <1.0
Others
Field pH (S.U.) 6.5 - 8.5 7.46
Fluoride (mg/L) 4 1 0.41
Chloride (mg/L) 69
Sulfate (mg/L) 2,310
TDS (mg/L) 3,760
General Inorganics Listed in Part I.E.1.(c)(2)(ii)
Carbonate (mg/L) <1.0
Bicarbonate (mg/L) 412
Sodium (mg/L) 379
Potassium (mg/L) 11.7
Magnesium (mg/L) 142
Calcium (mg/L) 490
Total anions (meq/L) 56.8
Total cations (meq/L) 53
Note:
GWCLs for MW-35 were set during the February 15, 2011 Pennit Modification. The GWCLS have been set
at the fraction of the GWQS (0.25) for Class II water uncJer GWCLs can be established after approval of a
Background Report for well MW-35.
_a = The 4th Quarter 2010 sampling event was conducted before the GWCLs were set at well MW-35
Page 20
ATTACHMENT 1
Time Concentration Charts for Parameters in OOC Status:
Monitoring Well MW-11
Historic Manganese Concentrations (pg/L)
180 1
160
140
120
100 Manganese
•GWCL 131.29 |jg/L
'Increasing Trend
Mar-05 Sep-05 Mar-06 Sep-06 Mar-07 Sep-07 Mar-08 Sep-08 Mar-09 Sep-09 Mar-10 Sep-10
Monitoring Well MW-12
Historic Selenium Concentrations (|jg/L)
35 -i
•Selenium
•GWCL 25 Mg/L
•Increasing Trend
0 ^- —!• 1 r
Jun-05 Dec-05 Jun-06 Dec-06 Jun-07 Dec-07 Jun-08 Dec-08 Jun-09 Dec-09 Jun-10
Monitoring Well MW-24
Historic Cadmium Concentrations ([igIL)
Cadmium
•GWCL 2.5 Mg/L
•Increasing Trend
0 -»—o-—1>
Jun-05 Dec-05 Jun-06 Dec-06 Jun-07 Dec-07 Jun-08 Dec-08 Jun-09 Dec-09 Jun-10
^ Monitoring Well MW-24
Historic Thallium Concentrations ([iglL)
•Thallium
•GWCL 1 MQ/L
•Increasing Trend
Jun-05 bec-05 Jun-06 Dec-06 Jun-07 Dec-07 Jun-08 Dec-08 Jun-09 Dec-09 Jun-10
Monitoring Well MW-26
Historic Chloroform Concentrations (MQ/L)
9000
8(j00
7000
6000
5000
4000
3000
2000
1000
• Chloroform
•GWCL 70 Mg/L
•Decreasing
Trend
1 r
Sep-02 Apr-03 Nov-03 Jun-04 Jan-05 Aug-05 Mar-06 Oct-06 May-07 Dec-07 Jul-08 Feb-09 Sep-09 Apr-1 O Nov-10
Monitoring Well MW-26
Historic Dichlormethane Concentrations (Mg/L)
120
100
Dichlormethane
GWCL 5 Mg/L
'Increasing Trend
Mar-05 Sep-05 Mar-06 Sep-06 Mar-07 Sep-07 Mar-08 Sep-08 Mar-09 Sep-09 Mar-10 Sep-10
Monitoring Well MW-26
Historic Nitrate + Nitrite (as N) Concentrations (mg/L)
: Nitrate + Nitrite (as N)
•GWCL 0.62 rng/L
•Increasing Trend
Mar-05 Sep-05 Mar-06 Sep-06 Mar-07 Sep-07 Mar-08 Sep-08 Mar-09 Sep-09 Mar-10 Sep-10
Monitoring Well MW-26
Historic Uranium Concentrations ([iglL)
140
120
100
Uranium
GWCL 41.8 Mg/L
'Increasing Trend
Mar-05 Sep-05 Mar-06 Sep-06 Mar-07 Sep-07 Mar-08 Sep-08 Mar-09 Sep-09 Mar-10 Sep-10
Monitoring Well MW-27
Historic Chloride Concentrations (mg/L)
50
25
20
15
10
0 1 1 : 1 1 1 : 1 •—•- 1 1 —I • 1
Jun-05 Dec-05 Jun-06 Dec-06 Jun-07 Dec-07 Jun-08 Dec-08 Jun-09 Dec-09 Jun-10
Chloride
GWCL 38 mg/L
'Increasing Trend
Monitoring Well MW-27
Historic Nitrate + Nitrite (as N) Concentrations (mg/L)
•Nitrate + Nitrite (as N)
•GWCL 5.6 mg/L
'Increasing Trend
Jun-05 Dec-05 Jun-06 Dec-06 Jun-07 Dec-07 Jun-08 Dec-08 Jun-09 Dec-09 Jun-10
Monitoring Well MW-27
Historic TDS Concentrations (mg/L)
1400
1200
1000
800
600
400
200
0 -i r -I -r
•TDS
•GWCL 1,075 mg/L
•Increasing Trend
Jun-05 Dec-05 Jun-06 Dec-06 Jun-07 Dec-07 Jun-08 Dec-08 Jun-09 Dec-09 Jun-10
Monitoring Well MW-28
Historic Chloride Concentrations (mg/L)
120
100
60
40
20
T r T '• r 0
Jun-05 Dec-05 Jun-06 Dec-06 Jun-07 Dec-07 Jun-08 Dec-08 Jun-09 Dec-09 Jun-10
Chloride
•GWCL 105 mg/L
'Increasing Trend
Monitoring Well MW-30
Nitrate + Nitrite (as N) Historic Concentrations (mg/L)
Nitrate + Nitrite (as N)
GWCL 2.5 mg/L
'Increasing Trend
Jun-05 Dec-05 Jun-06 Dec-06 Jun-07 Dec-07 Jun-08 Dec-08 Jun-09 Dec-09 Jun-10
Monitoring Well MW-31
Historic Nitrate + Nitrite (as N) Concentrations (mg/L)
Nitrate + Nitrite (as N)
•GWCL 5 mg/L
'Decreasing Trend
Jun-05 Dec-05 Jun-06 Dec-06 Jun-07 Dec-07 Jun-08 Dec-08 Jun-09 Dec-09 Jun-10
Page 21
ATTACHMENT 2
Copy of Field Data Worksheet for Groundwater .
Used for the November and December 2010 Sampling Events
VS
Currently Approved Field Data Worksheet for Groundwater
As found in the March 22, 2010 DUSA QAP
Mill - Groundwater Discharge Permit
Groundwater Monitoring Quality Assurance Plan (QAP)
ATTACHMENT 1
WHITE MESA URANIUM MILL
FIELD DATA WORKSHEET FOR GROUND WATER
Description of Sampling Event; \Decer)her Mo/i^M*^ OrOuM
OENiSO MINES
Date: 03/22/2010 Rev. 6
Attachment 1
See instruction
Location (well name):
Sampler Name » ;^ i
and initials: |-^nr»cr H«)U*)j/TI'f
Date and Time for Purging iJiyiS/^OiO
Well Purging Equip Used: H pump or • bailer
Sampling Event |0^ce.rv\^^ l^or\^^H
pH Buffer 7.0 y.o
and Sampling (if different)
Well Pump (if other than Bennet)
Prev. Weil Sampled in Sampling Event
pH Buffer 4.0
MVO-JH
Specific Conductance HMHOS/ cm Well Depth(O.Olft): W'Z^
Depth to Water Before Purging 7^.03 Casing Volume (V) 4" Well:
3" Well:
(.653h)
(.367h)
Conductance (avg)
Well Water Temp, (avg) | H -^ ^
Weather Cond.
pH of Water (avg)
Redox Potential (Eh) Turbidity
Ext'l Amb. Temp. "C (prior sampling event)
Time
Conductance
Temp. °C
Gal. Purged
pH
Redox Potential Eh (mV) |
Turbidity (NTU)
Time
Conductance
Temp. °C
Gal. Purged
pH
Redox Potential Eh (mV)
Turbidity (NTU)
Time
Conductance
Temp, °C
Gal. Purged
PHT
Redox Potential Eh (mV)
Turbidity (NTU)
Time
Conductance
Temp. °C
Gal. Purged
I pH
Redox Potential Eh (mV)
Turbidity (NTU)
White Mesa Mill
Field Data Worksheet for Groundwater 1 of2
Mill - Groundwater Dischai^e Permit
Groundwater Monitoring Qua Iity Assurance Plan (QAP)
Date; 03/22/2010 Rev. 6
Volume of Water Purged
Pumping Rate Calculation
Flow Rate (Q), in gpm.
S/60= I s.M
gallon(s)
Time to evacuate two casing volumes (2V)
T = 2V/Q = I ^//\
Number of casing volumes evacuated (if other than two)
If well evacuated to dryness, number of gallons evacuated
Name of Certified Analytical Laboratory if Other Than Energy Labi ^/A
Type of Sample Sample Taken Sample Vol (indicate
if other than as
specified below)
Filtered Preservative
Type
Preservative
Added Type of Sample
Y N
Sample Vol (indicate
if other than as
specified below) Y N .
Preservative
Type Y N
VOCs 123 • 3x40 ml • HCL Q •
Nutrients 13 • 100 ml • e H2S04 •
Heavy Metals • 250 ml • HN03 Kl •
All Other Non Radiologics • • 250 ml • • No Preserv. • •
Gross Alpha • • 1,000 ml • • HN03 • •
Other (specify)
•
Sample volume o •
PH
If preservative is used, specify
Type and Quantity of
Preservative:
Comment
See instruction
Took DtjpV^* \o V^^cr 7^.03, Took 1 5<:+of^ |3a<'*r»t:'Vcrs. ^
Do not touch this ceil (SheetName)
White Mesa Mill
Field Data Worksheet for Groundwater 2 of 2
Mill - Groundwater Discharge Permit
Groundwater Monitoring
Quality Assurance Plan (QAP)
Date: 3-22-10 Revision 6
Page 41 of 49
ATTACHMENT 1
WHITE MESA URANIUM MILL
FIELD DATA WORKSHEET FOR GROUND WATER
Description of Sampling Event: :
Location (well name)
Sampler
Name and initials
Date and Time for Purging and Sampling (if different)
Well Purging Equip Used: pump or bailer Well Pump (if other than Bennet)
Sampling Event Prev. Well Sampled in Sampling Event
pH Buffer 7.0_ . pH Buffer 4.0
Specific Conductance uMHOS/cm Well Depth_
Depth to Water Before Purging
Conductance (avg)
Well Water Temp, (avg)
Weather Cond.
Casing Volume (V) 4" Well:
3"Well:_
pH of Water (avg)
Redox Potential (Eh) Turbidity
Ext'l Amb. Temp,(prior to sampling event)
_(.653h)
.(.367h)
Time: Gal. Purged
Conductance
pH
Temperature_
Redox Potential (Eh)
Turbidity
Time: Gal. Purged_
Conductance
pH
Temperature_
Redox Potential (Eh)
Turbidity
Time: Gal. Purged_
Conductance
pH
Temperature
Redox Potential (Eh)_
Turbidity
Time: Gal. Purged
Conductance
pH
Temperature
Redox Potential (Eh)_
Turbidity
Mill - Groundwater Discharge Permit
Groundwater Monitoring
Quality Assurance Plan (QAP)
Date: 3-22-10 Revision 6
Page 42 of 49
Volume of Water Purged When Field Parameters are Measured_
Pumping Rate Calculation
Flow Rate (Q), in gpm.
S/60 =
Time to evacuate two casing volumes (2V)
T = 2V/Q =
Number of casing volumes evacuated (if other than two)
If well evacuated to dryness, number of gallons evacuated
Name of Certified Analytical Laboratory if Other Than Energy Labs
Type of Sample Sample
Taken
(circle)
Sample Volume
(indicate if other
than as specified
below)
Filtered
(circle)
Preservative Added
(circle)
VOCs N 3x40 ml N HCL Y N
Nutrients N 100 ml N H2SO, Y N
Heavy Metals N 250 ml N HNO, Y N
All Other
Radiologics
Non-N 250 ml N No Preservative Added
Gross'Alpha N 1,000 ml N H2SO4 Y N
Other (specify) N Sample volume N N.
If a preservative is used,
Specify Type and
Quantity of Preservative:
Comments