DRC-2011-005532 - 0901a0688022d379

State of Utah
GARY R. HERBERT
Govemor
GREG BELL
Lieutenant Governor
Department of
Environmental Quality
Amanda Smith
Executive Director
DIVISION OF RADIATION CONTROL
Rusty Lundberg
Director
MEMORANDUM
I
TO:
FROM:
DATE:
SUBJECT:
Loren Morton
Phil Goble &
Februarys, 2011
/I
C-2011-005
Review of the Quarter, 2010 (dated May 19, 2010), 2"^* Quarter (dated August 26,
2010), and S"* Quarter, 2010 (dated November 22, 2010) Routine Groundwater Monitoring
Reports. Groundwater Discharge Permit (Permit) UG370004 - Denison Mines (USA)
Corp. (DUSA) White Mesa Mill, Blanding, Utah
This is a summary of DRC staff review of three DUSA monitoring reports for the Quarter (January -
March), 2"^* Quarter (April - June) and 3'"'' Quarter (July - September;) 2010 sampling events and all
accelerated monitoring during those quarters as corresponds to the DUSA reports dated May 19, August
26, and November 22, 2010, cited above. After review of these reports, DRC staff findings are as follows:
1) The DUSA Quarter, 2"^^ Quarter, 3rd Quarter 2010 Groundwater Monitoring Reports were received
by their respective due dates, June 1, September 1, and December 1, respectively. 2) Stabilization of
indicator field parameters was not reached before sample collection 3) Certain QA/QC sample data
problems are apparent. 4) Summary of the apparent violations is also provided below.
1.0 Accelerated Monitormg and POC Wells Exceeding GWCL
When a monitoring well has a pollutant that exceeds a GWCL set forth in Table 2 of the 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 LG.l). When monitoring wells have parameters that have
exceeded the Ground Water Comphance Limit (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. In the Permit Modification, new GWCLs were
established; therefore,, all groundwater samples collected after January 20, 2010 are subject to the new
GWCLs. In the event a constituent is in OOC status, DUSA will be required to prepare and submit within
30 calendar days to the Executive Secretary a plan and a time schedule for assessment of the sources,
extent and potential dispersion of the contamination, and an evaluation of potential remedial action to
restore and maintain groundwater quality to insure that Permit limits will not be exceeded at the
compliance monitoring pomt and that DMT or BAT will be reestablished, in accordance with Part I.G.4(c)
of the Permit .
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 Uke City, UT
Mailing Address: P.O. Box 144850 • Salt Lake City, UT 84114-4850
Telephone [phone] • Fax (801) 533^097 • T.D.D. [phone]
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
Tetrahydrofiaran (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 September 2010 November 2010
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
November 2010
MW-30 Class II water D-2 Nitrate + 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
November 2010
D= Down-gradient; U = Up-gradient; C = Cross-gradient; 1,2,3,4A = Cell #
a = Monitoririg well MW-2 6 is a pumping well for the Chloroform investigation
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 D-4A
Selenium
Field pH
Fluoride
2"'Quarter 2010
2"^* Quarter 2010
2"^* Quarter 2010
3'^ Quarter 2010
3'''Quarter 2010
^''^ Quarter 2010
MW-3A Class III water D-4A
Field pH
Sulfate
TDS
2"'Quarter 2010
2"^^ Quarter 2010
2"^^ Quarter 2010
3''Quarter 2010
3'''* Quarter 2010
3"* Quarter 2010
MW-12 Class III water D-3 Selenium 2"''Quarter 2010 3'''Quarter 2010
MW-18 Class III water U-1
Thallium
Field pH
Sulfate
TDS
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-1 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-1
Nitrate + Nitrite (as N)
Sulfate
TDS
Chloride
2"''Quarter 2010
2"^* Quarter 2010
Quarter 2010
1'* Quarter 2010
3'"'Quarter 2010
3'''Quarter 2010
3'''* Quarter 2010
3'^^ Quarter 2010
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MW-28 Class III water D-I Field pH
Chloride
2"'Quarter 2010
2"''Quarter 2010
3'''Quarter 2010
3'^ Quarter 2010
MW-32 Class III water . C-2 Gross Alpha
FieldpH
2"'Quarter 2010
^"'^ Quarter 2010
3'" Quarter 2010
3'''Quarter 2010
*D= Down-gradient; U = Up-gradient; C = Cross-gradient; 1,2,3,4A = Cell #
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. In the February 1, 2011 submittal, DUSA states it plans to submit the revised Field pH
GWCLs by the end of the 2"^^ quarter of 201L After DRC approval of revised GWCLs for Field pH, Table
2 ofthe Permit will be updated in a future Permit Modification. '
DUSA notified the DRC of constituents in POOC and OOC status for each quarterly sampling event,
pursuant to Part LG.l (a). In each submittal, DUSA correctly identified each well in POOC and OOC
status. Each well with a parameter in accelerated status is described in detail below. Time series
concentration charts for each parameter in OOC status is included as Attachment 1.
Table 1.A
Well Sample Date Parameter GWCL Sample Result
MW-11
2/10/2010
4/28/2010
8/25/2010
Manganese 131.29 ^ig/L
134 ug/L
137 ^g/L
138 jig/L MW-11
2/10/2010 Tetrahydrofuran (THF) 11.5 ^ig/L ll^ig/L
Manganese - well MW-11 didn't have any parameters in accelerated status prioi* to the January 20, 2010
Permit Modification. The February 2010 manganese result of 134 |ag/L is shghtly above the GWCL
(131.29 |xg/L) and put manganese in accelerated status. The August 2010 result of 138 )ag/L is the new
historic high for manganese at well MW-11 since groundwater monitoring began in the Quarter of 2005.
The previous high of 107 |Lig/L was observed in the 4*^ Quarter of 2006 and the T* Quarter of 2007. Since
well MW-11 had two consecutive (1'* & 2"^^ Qtr, 2010) manganese results above the GWCL of 134 ^ig/L, it
is in OOC status for manganese.
THF - well MW-11 didn't have any parameters in accelerated status prior to the January 20, 201,0 Permit
Modificafion. THF had only been observed in well MW-11 one time before the T' Quarter, 2010
monitoring event (3.2 |ag/L in 2"^* Quarter, 2009). Since the initial exceedances of 12 ^g/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
well MW-11. In a letter dated January 12, 2011 DUSA submitted a request that accelerated monitoring for
THF in well MW-11 be retumed to quarterly monitoring rather than the accelerated monthly monitoring
due to THF concentrations in well MW-11 being below 11.5 |ig/L in nine consecutive sampling events
since the initial exceedance of 12 |ig/L in the Quarter, 2010. The DRC denied this request for the
following reasons: 1) Due to the history of THF in groundwater at the White Mesa Uranium Mill, 2)
Presence of THF recently identified in tailings wastewater, 3) Historic DUSA claims on a THF source is
(1) Bold text indicates those results that exceed the GWCL.
Page 4
now suspect, and 4) Groundwater hydraulic considerations at well MW-11. The DRC documented these
reasons in a January 25, 2011 Request for Information (RFI) letter. In the January 25, 2011 RFI the DRC
stated: "Although, DUSA ha^ previously claimed that THF is not used in its mill operations, concentrations
of THF were detected above the Utah GWQS (46 jug/L) in the Tailing Cell 4A LDS in two consecutive
samples. Since Tailings Cell 4A is the current tailing cell being used by DUSA, it appears that the mill is
currently using THF in its operations. " DUSA has not yet responded to this RFI.
Table LB
Well Sample Date Parameter GWGL Sample Result
2/2/2010 6.46 S.U.*
4/21/2010 6.29 S.U.*
MW-14 5/21/2010 FieldpH 6.5 -8.5 s.u. 6.36 S.U.*
6/16/2010 6.45 S.U.*
8/25/2010 6.48 S.U.*
Field pH - well MW-14 had not previously been in accelerated status for Field pH before the January 20,
2010 Pennit Modification. Since sampling began under the revised Permit, DUSA has exceeded the
GWCL for Field pH in well MW-14 in five of six sampling events; therefore, well MW-14 is in OOC
status for Field pH, see Table 1 .B, above.
Table l.C
Well Sample Date Parameter GWCL Sample Result
MW-25 9/8/2010 Uranium 6.5 ^ig/L 6.57 ^ig/L
Well MW-25 didn't have any parameters in accelerated status prior to the January 20, 2010 Permit
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 is
the new historic high for Uranium at well MW-25 since sampling began in 2"^ Quarter 2005. See Table
1 .C, above.
Table I.D.
Well Sample Date Parameter GWCL Sample Result
MW-26 2/2/2010 6.59 s.u.
(chloroform 5/24/2010 6.36 S.U.*
pumping well -
active remediation
7/21/2010
8/16/2010
FieldpH 6.74 - 8.5 s.u. 6.45 S.U.*
6.39 s.u.*
in progress) 9/16/2010 6.60 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 700 ^ig/L*
4/22/2010 1,700 jig/L*
5/24/2010 800 ^g/L*
6/16/2010 Chloroform 70 ^ig/L 940 ug/L*
7/21/2010 900 jig/L*
8/16/2010 2,800 jig/L*
9/16/2010 2,100 ug/L*
(2) Asterisk indicates those results that exceed the Utah GWQS.
Page 5
4/22/2010
7/21/2010
8/16/2010
9/16/2010
Dichloromethane 5 \ig/L
9.9 ^ig/L*
12jig/L*
24 jig/L*
45 ug/L*
2/2/2010
4/22/2010
8/16/2010
9/16/2010
Uranium 41.8 ^ig/L
58.7 ug/L*
66.7|ig/L*
71.8 ug/L*
72.7jig/L*
2/2/2010
5/24/2010
9/16/2010
Chloride 58.31 mg/L
72 mg/L
80 mg/L
64 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 five of seven sampling events; therefore, well MW-26 is in OOC
status for Field pH, and 6 other analytes, see Table 1 .D, above.
Nitrate + Nitrite (as N) - well MW-26 has not previously been in accelerated status for Nitrate + Nitrite
(as N). The results of 1.3 and 2 mg/L are actually lower than the historic high for Nitrate + Nitrite (as N) at
well MW-26 (2.7 mg/L in Quarter of 2005) since groundwater monitoring began (1'* Quarter, 2005).
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 (1'' & 2"'' Qtr, 2010); therefore, WQW MW-26 is in OOC
status for Nitrate + Nitrite (as N).
Chloroform - 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 ^g/L. Since sampling
began under the revised Permit, DUSA has exceeded the GWCL for Chloroform in well MW-26 in all
seven sampling events; therefore, well MW-26 is in OOC status for Chloroform.
Dichloromethane - Dichloromethane was in accelerated status before the issuance of the January 20, 2010
Permit Modification. Because well MW-26 is associated with the Chloroform Plume 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 |J.g/L. Since sampling began under the revised Permit,
DUSA has exceeded the GWCL for Dichloromethane in well MW-26 for three consecutive 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. The result of 72.7 |ig/L in September 2010 is actually lower than the historic high for
Uranium at well MW-26 (119 |ig/L in May 2007) since groundwater monitoring began in the 1^- Quarter,
of 2005. DUSA exceeded the uranium GWCL (41.8 (xg/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 three 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.
Page 6
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 is actually the highest result for TDS at well MW-26 since groundwater monitoring
began in the 1'* Quarter, of 2005. The September 2010 TDS result is the first exceedance in well MW-26;
therefore, well MW-26 is in POOC status for TDS.
Table I.E
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 Nitrate + Nitrite (asN) 2.5 mg/L 15.3 mg/L*
MW-30 -7/21/2010 16 mg/L*
8/24/2010 16 mg/L*
9/14/2010 15 mg/L*
4/27/2010
8/24/2010 Selenium 34^g/L 35.3 }igfL
35.6 ug/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, see Table I.E, above. Since sampling began under the revised Permit,
DUSA has exceeded the GWCL for Nitrate + Nitrite (as N) in well MW-30 in all seven sampling events;
therefore, well MW-30 is in OOC status for Nitrate + Nitrite (as N). Recent concentrations are about 1.5
times the State GWQS (10 mg/1). '
Selenium - well MW-30 has not previously been in accelerated status for Selenium. The result of 35.6
[ig/L in August 2010 is actually lower than the historic high for Selenium at well MW-30 (47.2 \ig/L in 3"*
Qtr 2008) since groundwater monitoring began (T* Quarter, 2005). DUSA exceeded the Selenium GWCL
(34 |ig/L) for two consecutive sampling events (2"^* Qtr & August, 2010); therefore, well MW-30 is in
OOC status for Selenium.
Table 1.F
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*
MW-31 6/15/2010
7/21/2010
8/24/2010
9/13/2010
Nitrate + Nitrite (as N) 5 mg/L 21.1 mg/L*
20 mg/L*
22 mg/L*
21 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 of the 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 seven sampling events, see Table
1 .F, above. Therefore, well MW-31 is in OOC status for Nitrate + Nitrite (as N). Recent concentrations
are about 2-times the State GWQS (10 mg/1). ^
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
Page 7
September 2010 is actually the highest result for TDS at well MW-31 since groundwater monitoring began
in the 1 Quarter, of 2005. The September 2010 TDS result is the first exceedance in well MW-31;
therefore, well MW-31 is in POOC status for TDS.
Table l.G
WeU Sample Date Parameter GWCL Sample Result
MW-3
5/3/2010
9/20/2010 FieldpH 6.5 -8.5 s.u. 6.14 s.u.*
6.39 s.u.* MW-3 5/3/2010 Selenium 37 |Lig/L 37.2 ^ig/L MW-3
5/3/2010 Fluoride 0.68 mg/L 0:71 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 both of the events, see Table 1 .G, above. Therefore, well MW-3 is
now in OOC status for Field pH.
Selenium - well MW-3 was in accelerated status for Selenium before the issuance of the January 20, 2010
Permit Modification. The result of 37.2 |Xg/L in May 2010 is actually lower than the historic high for
Selenium at well MW-3 (46.3 ^g/L in 4* Qtr 2009) since groundwater monitoring began (3'^'* Quarter,
2005). This is the first exceedance of Selenium in well MW-3 since new GWCLs were established in the
January 20, 2010 Permit Modification; 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 0.71 mg/L in May 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 (3"'* Quarter,
2005). This is the first exceedance of Fluoride in well MW-3 since new GWCLs were established in the
January 20, 2010 Permit Modificafion; therefore, well MW-3 is in POOC status for Fluoride.
Table l.H.
Well Sample Date Parameter GWCL Sample Result
MW-3A
5/4/2010
9/21/2010 Field pH 6.5-8.5 s.u. 6.23 S.U.*
6.42 S.U.* MW-3A 5/4/2010 Sulfate 3,640 mg/L 3,680 mg/L MW-3A
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
Modificafion as well MW-3A was a "new well" and didn't have GWCLs established until Execiitive
Secretary approval of the April 30, 2008 New Wells Background Report. The Background Report was
approved with the January 20, 2010 Permit Modification. Today, three analytes appear to be in accelerated
status, see below.
Field pH - Since sampling began under the revised Permit, DUSA has exceeded the GWCL for Field pH in
well MW-3 A in both ofthe events; therefore, well MW-3 A is in OOC status for Field pH.
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. The resuU of 3,680 mg/L in May 2010 is actually lower than the
historic high for Sulfate at well MW-3A (3,870 mg/L in 4* Qtr 2009).
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. The result of 5,860 mg/L in May 2010 is the new historic high for TDS at
well MW-3 A since sampling began in 2"^* Quarter 2005.
Pages
Table I.L
Well Sample Date Parameter GWCL Sample Result
MW-12 4/27/2010
9/20/2010 Selenium 25pig/L 25.7jig/L
31.9 jig/L
Selenium - Since sampling began under the revised Permit, DUSA has exceeded the GWCL for Selenium
in well MW-12 in both of the events, see Table 1.1, above. Therefore, well MW-12 is in OOC status for
Selenium. The Selenium results of 25.7 and 31.9 jag/L are the highest results seen in well MW-12 since
groundwater monitoring began in the 2"''Quarter, of 2005.
Table l.J.
Well Sample Date Parameter GWCL Sample Result
3/22/2010
5/4/2010 Field pH 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
Thallium 1.95 ^g/L
3.32 ug/L*
3.91 ^g/L*
3.73|iig/L*
3.64 Hg/L*
5/4/2010 Sulfate 1^938.90 mg/L 1,950 mg/L
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 Field pH.
Thallium - well MW-18 was in accelerated status for Thallium before issuance of the January 20, 2010
Permit Modificafion. Since sampling began under the revised Permit, 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 1,938.90 mg/L in well MW-18 in May 2010; therefore,
well MW-18 is in POOC status for Selenium. The resuh of 1,950 mg/L in May 2010 is the new historic
high for TDS 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 is the new historic high for
TDS at well MW-18 since sampling began in 2"^^ Quarter 2005.
Table I.K.
Well Sample Date Parameter GWCL Sample Result
MW-19 5/4/2010 FieldpH 6.78 - 8.5 s.u. 6.61 s.u.
Field pH - well MW-19 had not previously been in accelerated status for Field pH before the Januaiy 20,
2010 Permit Modification. Since sampling began under the revised Permit, DUSA exceeded the GWCL
for Field pH in well MW-19 during the 2"^* Quarter, 2010 sampling event; therefore, well MW-19 is in
POOC status for Field pH.
Table I.L.
Well Sample Date Parameter GWCL Sample Result
MW-23 4/22/2010 Field pH 6.5 - 8.5 s.u. 6.18 s.u *
Well MW-23 didn't have any parameters in accelerated status prior to the January 20, 2010 Permit
Modificafion as well MW-23 was a "new well" and didn't have GWCLs established until Execufive
Page 9
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 - DUSA exceeded the GWCL for Field pH in well MW-23 during the 2"'' Quarter, 2010 sampling
event; therefore, well MW-23 is in POOC status for Field pH, see Table 1 .L, above.
Table l.M.
Well Sample Date Parameter GWCL Sample Result
5/6/2010 FieldpH 6.5 - 8.5 s.u. 6.14 S.U.*
MW-24
5/6/2010
9/21/2010 Cadmium 2.5 ug/L 4.28 ^g/L
5.06 ug/L*
5/6/2010
9/21/2010 Thallium 1.0 \ig/L 1.3 ^g/L
1.57 ug/L
Well MW-24 didn't have any parameters in accelerated status prior to the January 20, 2010 Permit
Modificafion as well MW-24 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 exceeded the GWCL for Field pH in
well MW-24 during the 2"'* Quarter, 2010 sampling event; therefore, well MW-24 is in POOC status for
Field pH, see Table 1 .M, above. r
Cadmium - since sampling began under the revised Permit, DUSA has exceeded the GWCL for Cadmium
in well MW-24 for two consecutive sampling events (2"^* & 3''' Qtr, 2010); therefore, well MW-24 is in
OOC status for Cadmium. Groundwater sampling began at MW-24 in the 2"'' Quarter, 2005 and the
previous high for Cadmium at well MW-24 was 1.48 ^ig/L in the 3"^ Quarter, 2009. The results observed •
in the 2"^^ Quarter, 2010 (4.28 \ig/L) and 3'^^ Quarter, 2010 (5.06 [ig/L) are well above the 2.5 |ag/L GWCL
standard. Furthermore, the 3"^ Quarter, 2010 result (5.06 fig/L) is shghtly 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.
Table I.N
Well Sample Date Parameter GWCL Sample Result
5/3/2010
9/14/2010 Nitrate + Nitrite (as N) 5.6 mg/L 5.8 mg/L
5.9 mg/L
MW-27
5/3/2010
9/14/2010 Chloride 38 mg/L 42 mg/L
42 mg/L
5/3/2010 Sulfate 462 mg/L 469 mg/L
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 MW-27 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.
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 for two consecutive sampling events, see Table 1 .N, above.
Page 10
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 Permit, DUSA has exceeded the GWCL for Chloride in
well MW-27 for two consecutive sampling events; therefore, well MW-27 is in OOC status for Chloride.
The December 30, 2009 Nitrate Contaminafion 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. It is important to note that MW-27 is located upgradient
of Cell 1, and downgradient of the DUSA mill site area.
Sulfate - DUSA exceeded the Sulfate GWCL of462 mg/L in well MW-27 in May 2010; therefore, well
MW-27 is in POOC status for Sulfate. The resuh of 469 mg/L in May 2010 is actually lower than the
historic high for Sulfate at well MW-27 (480 mg/L in 3"^ Qtr 2009) since sampling began (2"'* Quarter
2005).
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.
Table l.O.
Well Sample Date Parameter GWCL Sample Result
MW-28
4/19/2010
9/14/2010 FieldpH 6.1-8.5 s.u. 5.67 S.U.*
5.91 S.U.* MW-28 4/19/2010
9/14/2010 Chloride 105 mg/L 108 mg/L
106 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 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-28 for consecutive events (2"'' Qtr & 3"* Qtr, 2010); therefore, well MW-28 is in OOC status for
FieldpH.
Chloride - since sampling began under the revised Permit, DUSA has exceeded the GWCL for Chloride in
well MW-28 for two consecutive 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.
Table 1.P.
Well Sample Date Parameter GWCL Sample Result
MW-32
4/20/2010
9/13/2010 Field pH 6.4 - 8.5 s.u. 6.03 s.u.*
6.33 S.U.* MW-32
4/20/2010 Gross Alpha 3.33 pCi/L 4.5(+/-0.9) 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 for two consecufive events, see Table 1 .P, above (2"'' Qtr & 3''' Qtr,
2010); therefore, well MW-32 is in OOC status for Field pH.
Page 11
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. .
2.0 1**, 2"'', and S"^** Quarter Groundwater Monitoring Reports Received by Respective Due Dates
The DUSA 1'' Quarter (May 19, 2010), 2"'' Quarter (August 26, 2010), 3rd Quarter (November 22, 2010)
2010 Groundwater Monitoring Reports were received by the Division of Radiafion Control (DRC) by their
respective due dates: June 1, September 1, and December 1, respectively
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 DUSA to
perform analysis on the samples collected during the V\ 2"^^, and 3''' Quarter, 2010 monitoring events were
certified by the Utah Bureau of Laboratory Improvement for the parameters on which they performed
analysis.
4.0 Monitoring Wells Purged for Two Casing Volumes Before Sample Collection
As stated in Secfion 6,2.7(d)(v) of the DUSA QAP, two casing volumes must be evacuated from the well
before the sample is collected. The DUSA QAP directs DUSA to first calculate the amount of time to
evacuate two casing volumes and then pump for that length of time. After review ofthe 2"", and 3^'*
Quarter, 2010 reports, it appears DUSA evacuated the required two casing volumes in each well prior to
sample collection during the V\ 2"^*, and 3''* Quarter, 2010 sampling events and all accelerated monitoring
during those quarters. This is an area where DUSA has improved; previously this problem was observed in
the r*, 2"^ 3'"'', and 4* Quarter, 2009 reports.
5.0 Stabilization of Indicator Field Parameters Not Reached Before Sample Collection
As stated in Section 6.2.7(d)(v) of the DUSA QAP: "purging is completed after two casing volumes have
been removed and the field parameters pH, temperature, specific conductance, redox potential (Eh) and
turbidity have stabilized to within +/-10% over at least two consecutive measurements." The V\ 2"^*, 3'"''
Quarter, 2010 reports showed that the field parameters pH, temperature, and specific conductance, and
redox potential (Eh) reached stabilization in each well before sample collection in the, January -
September, 2010 monitoring events. However, this is not true for turbidity. As shown on the table below,
there were four wells in the 2"'^ Quarter, one well in the June, and one well in the July, 2010 monitoring
events where turbidity stabilization wasn't reached before sample collecfion. In each of these situations,
DUSA made at least 4 field measurements for turbidity, the two last of which are listed in Table 3 below.
As can be seen, the company failed to reach a+/-10% stability before sample collection.
Table 2 - Stabilization of Turbidity Not Reached Before Sample Collection
Groundwater
Monitoring Event
Well
Second to Last
Turbidity
Measurement (NTU)
Last Turbidity
Measurement (NTU) ^"^
%
Difference
2"''Qtr, 2010 MW-17^'^ 234.1'^^^ 92%
2"'' Qtr, 2010 MW-20 ^'^ 0 @ 5.82 gallons 0.3 @ 5.89 gallons ' 00
2"" Qtr, 2010 MW-25 ^'^ 134.4 @ 51.86 gallons 186.3 @ 52.08 gallons 39%
2°''Qtr, 2010 MW-29^'^ 60.3 @ 31.24 gallons 70.3 @ 31.46 gallons 17%
June, 2010 MW-26 2,9 (i) 7.1 ^'•^ 145%
July, 2010 MW-14 34.8 @ 32.33 gallons 72.4 @ 33 gallons 108%
July, 2010 MW-26 9.4 31.5^^^ 235%
Page 12
July, 2010 I MW-31 | 33.2 @ 78.98 gallons | 27.2 @ 79.20 gallons | -18%
Footnotes:
1) Data for this well was obtained from Tab B of the 2"'' Quarter 2010 Groundwater Monitoring Report
2) DUSA did not specify how many gallons were pumped at the time parameter measurements were taken in well MW-17 during the 2"**
Quarter 2010 sampling event ,
3) Data for this well was obtained from Tab C of the 2^ Quarter 2010 Groundwater Monitoring Report
4) DUSA did not specific how many gallons were pumped at the time parameter measurements were taken in well MW-26 during the June
2010 sampling event
5) Dataforthis well was obtained from Tab C of the 3"* Quarter 2010 Groundwater Monitoring Report
6) DUSA did not specific how many gallons were pumped at the time parameter measurements were taken in well MW-26 during the July
2010 sampling event
7) Review of the l*", 2"'', 3"* Quarter, 2010 reports show a total of 4 field parameter measurements were collected and reported in each well
Failure to reach stabilization for turbidity before sample collection is in violation of Section 6.2.7(d)(v) of
the DUSA QAP and Part I.E. I (a) of the Permit. This problem was also found when DRC staff reviewed
two previous DUSA monitoring reports, as foHows:
1) r' Quarter, 2009 Groundwater Monitoring Report - where the problem was brought to the company's
attenfion in a November 17, 2009 NOV (Violation No. 2). DUSA responded to the violation in a
December 23, 2010 letter, as follows:
a. The root cause of the noncompliance:
"The sampling technicians failed to fully understand the QAP requirement at Section 6.2.7.(d)(v)
ofthe QAP. The technicians believed that if the well yields 2 casing volumes (Section 6.2.7,(d)(vi)
ofthe QAP) or if stable parameters are obtained in accordance with Section 6.2.7.(d)(v), then a
sample can be collected. The technicians did not understand that regardless of the fact that 2
casing volumes have been evacuated, Section 6.2.7.(d)(v) requires that field parameters must also
fall within a 10% range prior to the collection of samples. As a result, the technicians in some
instances evacuated 2 casing volumes but did not achieve stable turbidity conditions for the
referenced samples in the February and March, 2009 monitoring events. In addition, and because
some of these wells were both insufficiently purged and also did not meet stable parameters,
sampling technicians were not diligent in adhering) to the overall purging requirements. "
b. Steps that have been or will be taken to correct the violations:
The following steps have been taken to correct the violation:
i. "Sample technicians have been re-apprised of the requirements at Sections 6.2.7.(d)(v) and
6.2.7. (d)(vi) of the QAP that 2 casing volumes must be evacuated and that stable field
parameters must be observed prior to sampling.
ii. The QA manager has initiated an early review process for Field Data Worksheets relative to
well evacuation volumes and field parameters. This review step will occur as soon as possible
after sampling has occurred, and in time for re-sampling should purging steps fail to comply
with QAP requirements. •[
iii. As an element of quarterly reporting, the QA manager has initiated a documented review of
quarterly samples for evacuation volume and field parameter stability which has been included
in the 3*"^ Quarter, 2009 Groundwater Monitoring Report.
iv. All technicians are required to read the QAP annually and as necessary in order to follow the
QAP requirements."
c. Date when compliance was or will be regained:
Page 13
"Samples were collected in accordance with Sections 6.2.7.(d)(v) and 6.2.7.(d)(vi) of the QAP
during the 4"^ Quarter, 2009 event. "
d. Steps taken or to be taken to prevent reoccurrence of the noncompliance:
"The steps outlined in 2 .b) above have been taken. "
In an April 21, 2010 Closeout Letter, the DRC accepted the corrective actions taken by DUSA, that
included re-training of DUSA staff and changes to intemal review procedures by DUSA management of
field data worksheets.
2) 4* Quarter, 2009 Groundwater Monitoring Report - where the problem was again brought to the
company's attenfion in an April 30, 2010 NOV (Violafions 3 & 4) DUSA responded to the violafions in a
May 24, 2010 letter, as follows:
a. The root cause of the noncompliance:
"Data indicate that it may not be feasible to achieve both a turbidity level less than 5 NTU and a
stabilized turbidity between any two measurements within 10% RPD in every well. Discussions are
underway with DRC to address the issue that it may not be appropriate or feasible to achieve
consistent turbidity levels 3 of 5 NTU in the Mill's groundwater program wells under the current
evacuation scheme, and that other well purging approaches, such as micro-purging, may be more
appropriate. "
b. Steps that have been or will be taken to correct the violations:
"A letter report addressing modification of monitoring methods relative to turbidity issues,
submitted by DUSA to DRC is currently under review. "
c. Date when compliance was or will be regained:
"Compliance will be achieved when monitoring methods relative to turbidity are modified to
address Mill site conditions. "
d. Steps taken or to be taken to prevent reoccurrence of the noncompliance:
"Seeparagraph c) above".
The DRC responded to DUSA iri a June 28, 2010 DRC Findings and Proposed Settlement Agreement and
Monetary Penalty letter. Regarding Violation 3 & 4 the DRC responded as follows:
''DRC Findings: in the May 24, 2010 DUSA letter, a root cause analysis DUSA claims that it may not
be feasible to achieve both a turbidity: level less than the 5 NTU standard and stabilization of turbidity
for two consecutive measurements within 10% in every well before sample collection. The May 24,
2010 DUSA letter also stated that to correct the violation, they had submitted a letter request for
waiver of monitoring methods relative to turbidity issues. DUSA submitted this letter on April 2, 2010,
shortly after a March 29, 2010 conference call with DRC staff to discuss State findings for the 4'^
Quarter, 2009 Report. In the April 2, 2010 letter, DUSA requested that the Executive Secretary waive
the requirement in Section 6.2.7(d)(v) ofthe QAP for turbidity to stabilize in all groundwater
monitoring wells, chloroform investigation wells and nitrate investigation wells, until such time as
revised sampling procedures are approved in q revised QAP.
Page 14
Please be advised that the April 2, 2010 request for waiver does not constitute an acceptable ,
corrective action, nor does it provide prevention steps that DUSA was ordered to provide in the April
20, 2010 NOV. Further, acceptable corrective actions and steps for prevention must always be
independent of any future DRC actions or approvals.
After reviewing the April 2/2010 request for waiver, the DRC sent DUSA a June 1, 2010 Request for
Information (RFI) letter. DUSA responded to the DRC June 1, 2010 RFI in an e-mail of June 24,
2010, which is currently under review. Therefore, Violation No. 3 remains unresolved, and DUSA has
yet to re-gain compliance with respect to this violation.
After review ofthe DUSA's explanation, we have determined that Violation No. 3 still stands, as cited.
After considering the Executive Secretary's possible enforcement options, DRC staff believes it is
necessary to pursue a penalty for this violation because this is a repeat violation, in that in a '
November 17, 2009 NOV (Violation No. 2), DUSA was cited for failing to achieve stable turbidity
conditions before collecting groundwater samples in 17 wells during the February and March, 2009
monitoring events. DUSA responded to that NOV with a December 23, 2009 letter in which they stated
that compliance had been re-gained in that the "Samples were collected in accordance with Sections
6.2.7(d)(v) and 6.2.7(d)(vi) ofthe QAP during the 4"' Quarter, 2009 event. " This and other DUSA
corrective actions and prevention steps were accepted by the DRC in an April 21, 2010 letter.
Contrary to this claim, the problem continued in the 4'^ Quarter, 2009 Report, as cited in the April 20,
2010 NOV (Violation 3). Because this is a repeat and continuing problem, a proposed civil penalty
has been calculated by DRC staff and is attached to this letter. A proposed SA is also attached for
your consideration.
Please be aware that the proposed civil penalty is based in part, on nine days of sampling during
October, November, and December, 2009, and that until the DRC approves any changes to the QAP, ^
that DUSA is bound to the commitments, corrective actions, and prevention steps listed in the
December 23, 2009 DUSA letter response. Again, said corrective actions were found acceptable in an
April 21, 2010 DRC letter. In the event that DUSA fails to execute these corrective actions, it may be
subject to additional enforcement actions and monetary penalties. "
The Executive Secretary fined DUSA a $2,997 Civil Penalty for this problem identified in the 4* Quarter,
2009 Report. DUSA paid the Civil Penalty on August 23, 2010. After DRC review ofthe June 24, 2010
DUSA response to the DRC June 1, 2010 RFI, it showed that DUSA has not provided any evidence that all
monitoring wells at the Mill have been developed properly and all common well development methods
were attempted and exhausted.
DUSA submitted a revised QAP (Rev. 7) on June 24, 2010, where they proposed a number of changes in
parameter stabilization and purging techniques. The DRC responded to the submittal in a June 24, 2010
RFI. The June 24, 2010 RFI stated: "The proposed changes in the June 4, 2010 DUSA QAP, Rey. 7 can
not be approved until the items in the June 1, 2010 DRC RFI and the items in this RFI are resolved. "
DUSA has not yet responded to the June 24, 2010 QAP RFI and their response to the June 1, 2010 RFI is
lacking the required information, '
Because this problem continues, it is recommended that the Executive Secretary pursue a Civil Penalty
again for this issue with DUSA receiving less credit for this continuing problem. It is also recommended
that the Civil Penalty for the 2"^ Quarter, June, and July 2010 violations be three separate violations rather
than lumped as one as the DRC has done in the past. DRC Staff feels this is appropriate due to the
continuing nature and DUSA's failure to submit the required information in the June 1 and June 24, 2010
RFI's.
Page 15 —
6.0 Groundwater Samples Collected with Turbidity Measurement > 5 NTU
As stated in Section 6.2.7(d)(v) of the 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
June, July, 2"^* and 3'^'* Quarter, 2010 monitoring events, there were 16 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^^^
2°" Qtr, 2010 MW-1 ^'^ 15.9
2"''Qtr, 2010 MW-5 ^'^ 21.9
2"" Qtr, 2010 MW-12 ^'^ 27.3
2"" Qtr, 2010 MW-15^'^ 11.5
2"" Qtr, 2010 MW-17 ^'^ 234.1
2"''Qtr, 2010 MW-22 ^'^ 7.7
2'"'Qtr, 2010 MW-25 ^'^ 186.3
2"''Qtr, 2010 MW-29 ^'^ 70.3
2"" Qtr, 2010 MW-32 ^'^ 5.6
June 2010 MW-11^'^ 22.9
June 2010 MW-26 7.1
3'" Qtr, 2010 MW-22 ^''> 7.5
3'" Qtr, 2010 MW-32 5.8
July 2010 MW-14 72.4
July 2010 MW-26 ^''^ 31.5
July 2010 MW-31 27.2
Footnotes:
1) Data for this well was obtained from Tab B of the 2"''Quarter 2010 Groundwater Monitoring Report
2) Data for this well was obtained from Tab C of the 2"'' Quarter 2010 Groundwater Monitoring Report
3) Data for this well was obtained from Tab B of the 3'^'' Quarter 2010 Groundwater Monitoring Report
4) Data for this well was obtained fiom Tab C of the S^*" Quarter 2010 Groundwater Monitoring Report
5) Last Measurement before sample collection.
Failure to collect groundwater samples below the 5 NTU standard is a concern in that excess turbidity has
the potential to bias groundwater quality analytical results. This is especially true of samples analyzed for
heavy metals, where an acid preservative is found in the sample bottle. 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 Februaiy 16, 2010 to discuss ways to
improve the DUSA QAP. During the call, it was agreed that Secfion 6.2.7(d)(v) of the 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 February 17, 2010. On February 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 result of DUSA pumping the required two casing volumes before
sample collection. DUSA brought up the possibihty of requesting a variance for turbidity stabilization.
The DUSA request for variance regarding 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 common well development methods were attempted
and exhausted. " As of today, February 8, 2011, no evidence that all monitoring wells at the White Mesa
Uranium Mill were properly developed has been provided by DUSA.
Page 16
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, in that DRC approved the DUSA QAP (Rev. 6) in a letter
dated April 20, 2010.
7.0 Previous Monitoring Events QA/QC Sample Data Problems
QA/QC problems found in the 4* Quarter, 2009 groundwater monitoring events showed a number of issues
of non-compliance with the DUSA QAP (for details see March 30, 2010 DRC Memo). These antecedent
problems were identified in previous DRC documents, and included: ^
• DUSA failed to report all well monitoring and samples collected, including a result for TDS in
samples MW-31 and MW-32 in the 4* Quarter 2009 Report, for the October 2009 monitoring
event This is in violation of Part I.F.I of the Permit.
• DUSA failed to report all well monitoring and samples collected, including a result for TDS in
field duplicate'MW-65 in the 4^ Quarter 2009 Report, for the October 2009 monitoring event.
This is in violation of Section 4.3.3 ofthe DUSA QAP and Part I.F.I ofthe Permit.
• DUSA failed to allow field turbidity to stabilize before collecting groundwater samples in 12 wells
during the October, November, and December, 2009 monitoring events. This is in violation of
Secfion 6.2.7(d)(v) ofthe DUSA QAP and Part I.E. 1(a) ofthe Permit.
• DUSA failed to allow field redox potential (Eh) to stabilize before collecting groundwater samples
in 5 wells during the October and November, 2009 monitoring events. This is in violation of
Section 6.2.7(d)(v) of the DUSA QAP and Part I.E. 1 (a) of the Permit.
• DUSA failed to evacuate two casing volumes before collecting groundwater samples in 17 wells
during the 4* Quarter (October) 2009 monitoring event. This is in violation of Section 6.2.7(d)(v)
of the DUSA QAP and Part LE. 1(a) of the Permit.
• DUSA failed to use the correct formula in 39 instances to determine RPD for the duplicates ofthe
October, November, and December, 2009 monitoring events. This is in violation of Section 3.1 of
the QAP and Part I.E. 1(a) of the Permit.
DUSA failed to list all GWCL exceedances that occurred during the 4*'' quarter of 2009 in a
summary table. This is in violation of Section 11 of the QAP and Part I.E. 1 (a) of the Permit.
• DUSA failed to ftally and completely disclose all non-conformance with the approved QAP for the
October, 2009 sampling event with respect to a RPD in excess of 20% for ammonia (as nitrogen)
in well MW-22 and blind duplicate sample MW-70. This is in violation of Secfion 9.1.4(a) ofthe
QAP and Part I.F. 1 (e) of the Permit.
DUSA was issued an April 20, 2010 Nofice of Violation (NOV) (Docket No. UGWlO-03) for the problems
idenfified in the 4* Quarter 2009 Report. These violafions were resolved with the June 28, 2010
Settlement Agreement, which was executed on July 26, 2010 to resolve the April 20, 2010 NOV. DUSA
was fined $17, 309 in the Setfiement Agreement, which DUSA paid for by check on August 23, 2010.
Page 17
8.0 QA/QC Sample Data Problems-2"^ Quarter of 2010
The following are QA/QC problems that occurred in the monitoring events during the 2"^* quarter of 2010.
The issues hsted below are in non-compliance with the QAP and details can be found in Table 4. No
QA/QC problems were observed in the 1^* and 3"* Quarter, 2010 Monitoring Reports.
Quarter 2010. Sampling Date: April 19 - Mav 6, 2010 (Table 4)
• The field blank (MW-60) had detectable concentrations of chloride and bicarbonate.
• The field blank (MW-60) was also analyzed for nutrients, heavy metals, gross alpha, VOCs, and
inorganics. According to the QAP, DUSA is not required to collect a field blank. However, if
DUSA wants to coUect a field blank for in house QA/QC, the DRC has no problem with it as long
as DUSA doesn't use the field blank results to flag or disqualify the groundwater sample results.
Mav 24. 2010 Accelerated Monitoring Event: Well MW-26 (Table 4)
• Relative Percent Difference was greater than 20% in original sample (MW-26, 0.3 mg/L)
compared to duplicate 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. 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. However^ both samples were below the
respective GWCL for Nitrate + Nitrite (as N) [0.62 mg/L].
It doesn't appear that DUSA is using the presence of detectable concentrations in the field blanks in 2"''
Quarter, 2010 Groundwater Report to flag or disqualify the groundwater sample results. Furthermore, the
approved QAP is currently silent on how field blanks results should have a bearing on groundwater sample
interpretation.
9.0 Violations Where Pursuing a Notice of Violation is Recommended
1. DUSA failed to allow field turbidity to stabilize before collecting groundwater samples in 8 weUs
during the 2"^* Quarter, June, and July, 2010 monitoring events. This is in violation of Section
6.2.7(d)(v) of the DUSA QAP and Part I.E. I (a) ofthe Permit. This is a continuing violafion cited
previously in the November 17, 2009 and April 20,2010 DRC NOVs.
2. 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 Parts I.C.I and Table 2 of the Permit. DUSA has also failed to coriiply with the
requirements of Part I.G.4(c). The wells and contaminants in OOC status that have exceeded their
respective GWCL include the following wells and analytes, as shown on the table below:
Table 4. Monitoring Wells and Contammants in OOC Stat US
Contaminant Monitoring Event POC Well GWCL Result
Nitrate + Nitrite fas Nl
Qtr, 2010 (2/2/2010)
2°'* Qtr, 2010 (4/22/2010) . MW-26 ^'^ 0.62 mg/L 1.3 mg/L
2 mg/L
Nitrate + Nitrite fas Nl
2"" Qtr, 2010 (5/3/2010)
3'''Qtr, 2010 (9/14/2010) MW-27 5.6 mg/L 5.8 mg/L
5.9 mg/L Nitrate + Nitrite fas Nl Qtr, 2010 (2/9/2010)
2"'*Qtr, 2010(4/27/2010) MW-30 2.5 mg/L 16.1 mg/L
15.8 mg/L
Nitrate + Nitrite fas Nl
l^'Qtr, 2010(2/9/2010)
2"'' Qtr, 2010(4/20/2010) MW-31 5 mg/L 21.7 mg/L
22.5 mg/L
Cadmium 2"" Qtr, 2010(5/6/2010)
3'''Qtr, 2010 (9/21/2010) MW-24 2.5 ug/L 4.28 }igfL
5.06 ug/L
Manganese 1^ Qtr, 2010(2/10/2010)
2°'^ Qtr, 2010(4/28/2010) MW-11 13lHg/L 134 ^g/L
137ng/L
Page 18
Selenium
2"''Qtr, 2010(4/27/2010)
3'"^ Qtr, 2010(9/20/2010) MW-12 25 Mg/L
25.7 )ig/L
31.9 Mg/L
Selenium
2"" Qtr, 2010 (4/27/2010)
August 2010 (8/24/2010) MW-30 34Hg/L 35.3 Mg/L
35.6Mg/L
Thallium
January 2010 (1/27/2010)
March 2010 (3/22/2010) MW-18 1.95 Mg/L 3.32 Mg/L
3.91 Mg/L Thallium 2"^ Qtr, 2010(5/6/2010)
3'''Qtr, 2010 (9/21/2010) MW-24 1.0 Mg/L 1.3 Mg/L
1.57 MS/L
Uranium r' Qtr, 2010 (2/2/2010)
2"''Qtr, 2010(4/22/2010) MW-26 ^'^ 41.8 Mg/L 58.7 Mg/L
66.7 Mg/L
Chloroform Qtr, 2010 (2/2/2010)
2°'* Qtr, 2010(4/22/2010) MW-26 ^'^ 70 Mg/L 700 Mg/L
1,700 Mg/L
Dichloromethane July 2010 (7/21/2010)
August 2010(8/16/2010) MW-26 5 Mg/L 12 Mg/L
24 Mg/L
Field pH
2"'^ Qtr, 2010(5/3/2010)
3'''Qtr, 2010(9/20/2010) MW-3 6.5 - 8.5 s.u. 6.14 s.u.
6.39 s.u.
Field pH
2"" Qtr, 2010(5/4/2010)
3''' Qtr, 2010(9/21/2010) MW-3A 6.5-8.5 s.u. 6.23 s.u.
6.42 s.u.
Field pH
1" Qtr, 2010(2/2/2010)
2"'^ Qtr, 2010 (4/21/2010) MW-14 6.5 - 8.5 s.u. 6.46 s.u.
6.29 s.u.
Field pH March 2010 (3/22/2010)
2"'*Qtr, 2010(5/4/2010) MW-18 6.25 - 8.5 s.u. 6.21 s.u.
6.20 s.u. Field pH
July 2010(7/21/2010)
August 2010(8/16/2010) MW-26 6.74-8.5 s.u. 6.45 s.u.
6.39 s.u.
Field pH
2°''Qtr, 2010 (4/19/2010)
3'''Qtr, 2010(9/14/2010) MW-28 6.1-8.5 s.u. 5.67 s.u.
5.91 S.U.
Field pH
2"''Qtr, 2010 (4/20/2010)
3^''Qtr, 2010 (9/13/2010) MW-32 6.4- 8.5 s.u. 6.03 s.u.
6.33 s.u.
Chloride
2"'* Qtr, 2010 (5/3/2010)
3''* Qtr, 2010(9/14/2010) MW-27 38 mg/L 42 mg/L
42 mg/L Chloride 2"" Qtr, 2010(4/19/2010)
3'''* Qtr, 2010(9/14/2010) MW-28 105 mg/L 108 mg/L
106 mg/L
TDS I'VQtr, 2010(3/15/2010)
2"" Qtr, 2010(5/3/2010) MW-27 1,075 mg/L 1,080 mg/L
1,160 mg/L
Part I.G.4(c) of the Permit requires that when DUSA identifies that a constituent is in OOC status, DUSA
will be required to prepare and submit within 30 calendar days to the Executive Secretary a plan and a time
schedule for assessment of the sources, extent and potential dispersion of the contamination, and an
evaluation of potential remedial action to restore and maintain groundwater quality to insure that Permit
limits will not be exceeded at the compliance monitoring point and that DMT or BAT will be reestablished,
in accordance with Part I.G.4(c) of the Permit.
The Permit GWCLs for the White Mesa Uranium were established with the January 20, 2010 Permit
Modification and this is the first time DUSA was required to submit the plan and schedule in accordance
with Part I.G.4(c) ofthe Permit under the Revised Permit. However, this is not the first time the DRC has
cited DUSA for this problem. After DRC review ofthe 2"^ 3'^ and 4^^ Quarter, 2005 Reports, DUSA was
cited in a NOV and Order dated August 24, 2006 (Docket No. UGW06-03) for exceeding the GWQS for
four (4) contaminants in eight (8) and being in OOC status and failing to make corrections to the system to
correct all the groundwater discharge violation of the Permit, pursuant to UAC R317-6-6.14(A). The
August 24, 2006 NOV and Order (p.6) required that DUSA/IUC prepare and submit a plan and schedule
pursuant to UAC R317-6-6.17(A)(3), which is the exact same wording found in Part I.G.4(c) of the Permit.
In the August 24, 2006 NOV transmittal letter the DRC stated: "It appears that timely submittal of the
Background Groundwater Quality (existing wells) as required in Part I.H2 ofthe Permit may have
allowed us to avoid this action. "
Page 19 /
DUSA/IUC responded to August 24, 2006 NOV in a September 18, 2006 letter, hi the letter, DUSA/IUC
stated: "According since the Background Groundwater Quality Report has not yet been submitted to the
Executive Secretary and approved and the natural background (x 2a) established, it is premature to
conclude that any of the exceedances of the current GWPLs in the Permit represent groundwater
contamination rather than natural background influences. "
To resolve the August 24, 2006 NOV, the DRC and DUSA/IUC entered into a Consent Agreement on
October 23, 2006. The Consent Agreement required DUSA/IUC to submit a Background Groundwater
Quality Report for Executive Secretary review and approval on or before January 2, 2007. The Consent
Agreement also required DUSA/IUC to pay stipulated penalties for every day beyond January 2, 2007, that
the Background Groundwater Quality Report is not submitted.
The Permit GWCLs for the White Mesa Uranium were established with the January 20, 2010 Permit
Modification. The DRC has been very dhect on what is required of DUSA when they are in OOC status.
Ll the September 1, 2009 Draft Permit, the DRC added a new Compliance Schedule Item at Part I.H.4 that
required DUSA to perform a Supplemental Isotopic Groundwater and Surface Water Investigatipn in the
monitoring wells and surface water sites that were not part of the July 2007 University of Utah Study (see
September 2009 SOB, p.31). DUSA response to Part I.H.4 was submitted in Public Comments dated
October 8, 2009. Regarding, Part I.H.4 DUSA concluded: "/« summary, the evaluations required by
proposed Part l.H. 4 are not necessary to establish that the Mill's tailings cells have not leaked to date;
they will provide little. If any, information that could be of use in evaluating a potential future tailings cell
leak; will be costly; will not be performed in accordance with accepted EPA guidance, will take at least
one-year to complete; and the timing of completion of the study will not be within Denison's control. As a
result, proposed Part I.H.4 should be eliminated from the Permit. "
the DRC responded to this comment in the January 20, 2010 Public Participation Summary (PPS), as
follows: "DRC Response: Substantive Comment. The DRC continues to believe that additional study of
groundwater isotopic geochemistry at the site is appropriate at some time. However, we agree that it is
DUSA's prerogative to defer such study until a monitoring well or contaminant passes into Out-of-
Compliance status by exceeding its respective Ground Water Compliance Limit. We also recognize that
the burden for groundwater remediation, should it be necessary, clearly falls on DUSA. As a result, the
DRC has removed Part I.H.4 of the Permit on the basis that Part I. G.4 of the Permit already provides a
process for DUSA to study possible sources of the contamination, and remediate it. " (see January 20, 2010
PPS pps. 10 and 11).
In response to another comment found in the PPS, the DRC went on to further state: "...This means that
the Ground Water Compliance Limits (GWCLs) are now established for the monitoring wells at the
facility, and enforceable under the Permit. In the event that a GWCL is exceeded in the future. Part I.G.4
of the Permit mandates a course of action whereby DUSA will be required to determine the source ofthe
contamination and provide rerhedial action, if needed..."
Page 15
APPENDIX 1
QA/QC
Tables
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TABLE 3
QA/QC Samples for the 1st Quarter 2010 (January - March) Groundwater Monitoring Event
1st Quarter 2010 Monitorinq 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 (uq/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 100 <25 <25 0.00
Cobalt 730 <10 <10 0.00
Copper 1,300 <10 <10 0.00
Iron 11,000 <30 <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 1 *0.7(+/-0.4) 1*0.9 (0:5+/-) 1 :
VOC (ug/L)
Acetone 700 <20 <2G <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 <i:o 0.00
Chloroform 70 <1.0 <1.0 <1.0 <1.0 ^ o.od
Chloromethane 30 <1.0 <r.o <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/I) 0.88 0.85 3.47 ;
Chloride (mg/I) 128 130 -1.55
Sulfate (mg/I) 507 507 0
TDS (mg/I) 1,150 1,180 -2.58
General Inorganics
Carbonate (mg/I) <1.0 <1.0 0.00
Bicarbonate (mg/I) 224 226 -0.89
Sodium (mg/I) 92.2 92.3 -0.11
Potassium (mg/I) 6.2 6.1 1.63
Magnesium (mg/I) 80.2 79.8 0.50
Calcium (mg/I) 170 167 1.78
Total anions (meq/L) 19.4 19.6 -1.03
Total cations (meq/L) 19.3 19 1.57
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Page 16
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-32
MW-1
GWQS GWCL MW-1 (Semi-Annual Monitoring) "1
Contaminant (Class II) 2nd Qtr. 2010
April - June
5/5/2010
4th Qtr. 2010 1
Oct.- Dec.
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 6.25 0.18
Nitrate + Nitrite (as N) 10 2.5 <0.1
Heavy Metals (ug/L)
Arsenic 50 12.5 <5.0
Beryllium 4 1 <0.50
Cadmium 5 4.2 <0.50
Chromium 100 50 <25
Cobalt 730 182.5 <10
Copper 1.300 325 <10
Iron 11,000 2,750 630
Lead 15 5.59 <1.0
Manganese 800 289 212
Mercury 2 0.5 <0.50
Molybdenum ,40 10 <10
Nickel 100 25 <20
Selenium 50 12.5 <5.0
Silver 100 25 <10
Thallium 2 0.5 <0.50
Tin 17,000 4.250 <100
Uranium 30 7.28 0.33
Vanadium 60 15 <15
Zinc 5.000 251 <10 1 Radiologics (pCi/L)
Gross Alpha 15 3.75 *1.1(+/-0.5) 1
VOC (ug/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 1 •• •
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 . 7.8
Toluene 1.000 250 <1.0
Xylenes (total) 10,000 2.500 <1.0
Others
Field pH(S.U.) 6.5 - 8.5 6.77-8.5 6.87
Fluoride (mg/L) 4 0.56 0.26
Chloride (mg/L) 22.1 18
Sulfate (mg/L) 838 805
TDS (mg/L) 1.567 1,340
Generallnorganics Listed in Pail I.E.I.(c)(2)(ii)
Carbonate (mg/L) <1.0
Bicarbonate (mg/L) 313
Sodium (mg/L) 177
Potassium (mg/L) 6.77
Magnesium (mg/L) 57.4
Calcium (mg/L) 161
Total anions (meq/L) 22.4
Total cations (meq/L) 20.7
MW-2
1 GWQS GWCL
(Class III)
MW-2 (Semi-Annual Monitoring)
Contaminant
GWQS GWCL
(Class III) 2nd Qtr. 2010
April - June
4/27/2010
4th Qtr. 2010
Oct. - Dec.
1 Parameters Listed in Table 2
1 Nutrients (mg/L) . . . . • . . • Ammonia (as N) 25 12.5 <0.05
Nitrate + Nitrite (as N) 10 0.12 <0.1
Heavy Metals (pg/L)
Arsenic 50 25 <5.0
Beryllium 4 . 2 <0.50
Cadmium 5 2.5 <0.50
Chromium 100 50 <25
Cobalt 730 365 <10
Copper 1,300 650 <10
Iron 11,000 151.6 <30 . • Lead 15 7.5 <1.0
Manganese 800 378.76 <10
Mercury 2 1 <0.50
Molybdenum 40 20 <10
Nickel 100 60 <20
Selenium 50 26.6 <5.0
Silver 100 50 <10
Thallium 2 1 <0.50
Tin 17,000 8,500 <100
Uranium 30 18.45 9.94
Vanadium 60 30 <15
Zinc 5,000 2,500 31
Radiologics (pCi/L)
Gross Alpha 15 1 3.2 1 *1.2(+/-0.5) 1
VOC (pg/L)
Acetone 700 350 <20
Benzene 5 2.5 <1.0
2-Butanone (MEK) 4,000 2,000 <20
Carbon Tetrachloride 5 2.5 <1.0
Chloroform 70 35 <i.o
Chloromethane ^ 30 15 <1.0
Dichloromethane 5 2.5 <1.0
Naphthalene 100 50 <1.0
Tetrahydrofuran (THF) 46 23 <1.0
Toluene 1.000 500 <1.0
Xylenes (total) 10,000 5,000 <1.0
Others
Field pH (S.U.) 6.5 - 8.5 6.5-8.5 7.48
Fluoride (mg/L) 4 0.43 0.3
Chloride (mg/L) 20. 7
Sulfate (mg/L) 2,147 1,970
TDS (mg/L) 3,800 3,130
General Inorganics Listed in Part I.E.1.(c)(2)(ii)
Carbonate (mg/L) <1.0
Bicarbonate (mg/L) 402
Sodium (mg/L) 538
Potassium (mg/L) 10.6
Magnesium (mg/L) 94.2
Calcium (mg/L) 336
Total anions (meq/L) 47.9
Total cations (meq/L) 48.2
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.
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 1.16 <0.05
Nitrate + Nitrite (as N) 10 0.73 0.3
Heavy Metals (MQ/L)
Arsenic 50 25 <5.0
Beryllium 4 2 <0.50
Cadmium 5 4.67 0.78
Chromium 100 50 <25
Cobalt 730 365 <10
Copper 1,300 650 <10
Iron 11,000 427.13 <30
Lead . 15 7.5 <1.0
Manganese 800 4,233 168
Mercury 2 1 <0.50
Molybdenum 40 20 <10
Nickel 100 100 <20
Selenium 50 , 37 37.2 35.5
Silver 100 50 <10
Thallium 2 1.6 1.31
Tin 17,000 8,500 <100
Uranium 30 47,32 18.6
Vanadium 60 30 <15
Zinc 5,000 173.19 96
Radiologics (pCi/L)
Gross Alpha 15 1 1:1 *0.2(+/-0.3) 1 1
VOC (pg/L)
Acetone . 700 350 <20
Benzene 5 2.5 <1.0
2-Butanone (MEK) 4,000 2,000 <20 .
Carbon Tetrachloride 5 2.5 <1.0
Chloroform 70 35 <1.0
Chloromethane 30 15 <1.0
Dichloromethane 5 2.5 <1.0
Naphthalene 100 50 <1.0
Tetrahydrofuran (THF) 46 23 <1.0
Toluene 1,000 500 <1.0
Xylenes (total) 10,000 5,000 <1.0
Others
Field pH (S.U.) 6.5-8.5 6.5-8.5 6.14 6.39
Fluoride (mg/L) 4 0.68 0.71 0.63
Chloride (mg/L) 76 63
Sulfate (mg/L) 3,663 3,490
TDS (mg/L) 6,186 5,270
General Inorganics Listed in Part I.E.1.(c)(2)(ii)
Carbonate (mg/L) <1.0
Bicarbonate (mg/L) 272
Sodium (mg/L) 761
Potassium (mg/L) 22.6
Magnesium (mg/L) 234
Calcium (mg/L) 428 .
Total anions (meq/L) 79
Total cations (meq/L) 74.3
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 III)
MW-3A (Semi-Annual Monitoring)
Contaminant
GWQS GWCL
(Class III) 2nd Qtr. 2010
April - June
5/4/2010
3rd Qtr. 2010
^^^July- Sept.
9/21/2010
4th Qtr. 2010
Oct. - Dec
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 0.6 <0.05
Nitrate + Nitrite (as N) 10 1.3 1
Heavy Metals (ug/L)
Arsenic 50 25 <5.0
Beryllium 4 2 1.18
Cadmium 5 8.3 1.82
Chromium 100 50 <25
Cobalt 730 365 <10
Copper 1,300 650 <10
Iron 11,000 6,500 <30
Lead 15 7.5 <1.0
Manganese 800 6,287 134
Mercury 2 ,1 0.5
Molybdenum 40 20 <10
Nickel 100 105 <20
Selenium 50 89 81.4
Silver 100 50 <10
Thallium 2 1.4 0.96
Tin 17,000 8,500 <100
Uranium 30 35 19.5
Vanadium 60 30 <15
Zinc 5,000 155 132
Radiologics (pCi/L)
Gross Alpha 15 1 7.5 1 *0.2(+/-0.4) 1 1
VOC (ug/L)
Acetone 700 350 <20
Benzene 5 2.5 <1.0
2-Butanone (MEK) 4,000 2,000 <20
Carbon Tetrachloride 5 2.5 <1.0
Chloroform 70 35 <1.0
Chloromethane 30 9.4 <1.0
Dichloromethane 5 2.5 <1.0
Naphthalene 100 50 <1.0
Tetrahydrofuran (THF) 46 23 <1.0
Toluene 1,000 500 <1.0
Xylenes (total) 10,000 5,000 <1.0
Others
Field pH (S.U.) 6.5 - 8.5 6.5-8.5 6.23 6.42
Fluoride (mg/L) 4 1.6 0.94
Chloride (mg/L) ' 70 57
Sulfate (mg/L) 3,640 3,680 3,630
TDS (mg/L) 5,805 is; 5*860 .- It 5,470
General Inorganics Listed in Part I.E.I.(c)(2)(:ii)
Carbonate (mg/L) <1.0
Bicarbonate (mg/L) 436
Sodium (mg/L) 840
Potassium (mg/L> 28.2
Magnesium (mg/L) 302
Calcium (mg/L) 487
Total anions (meq/L) 85.5
Total cations (meq/L) 86.4
Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL)
(a) = Quarterly accelerated monitoring event
MW-5
1 GWQS GWCL MW-5 (Semi-Annual Monitoring) ||
(Class II) 2nd Qtr. 2010
April - June
4/26/2010
4th Qtr. 2010
Oct.-Dec.
r Parameters Listed in Table 2
1 Nutrients (mg/L)
[Ammonia (as N) 25 1.02 0.53 .
Nitrate + Nitrite (as N) 10 2.5 <0.1
Heavy Metals (jjg/L)
Arsenic 50 17 <5.0 1 Beryllium 4 1 <0.50
Cadmium 5 2 <0.50 • Chromium 100 25 <25
Cobalt 730 182.5 <10 ,- .
Copper 1,300 325 <10
iron 11,000 2,750 112
Lead 15 4.1 <1.0
Manganese 800 37674 245
Mercury 2 1 <0.50 1 Molybdenum 40 10 <10
Nickel 100 44.1 <20
Selenium 50 12.5 <5.0
Silver 100 25 <10
Thallium 2 0.5 <0.50
Tin 17,000 4,250 <100.
Uranium 30 7.5 0.39
Vanadium 60 15 <15
Zinc 5,000 87.38 <10
Radiologics (pCi/L)
Gross Alpha 15 3.75 *0.1 (+/- 0.3) 1 I
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
plchloromethane 5 1.25 <1.0
Naphthalene 100 25 <1.0
Tetrahydrofuran (THF) 46 11.5 7.1
Toluene 1,000 250 <1.0
Xylenes (total) 10,000 2,500 <1.0 1
Others
Field pH (S.U.) 6.5-8.5 6.5-8.5 7.15
Fluoride (mg/L) 4^ 1.42 0.92
Chloride (mg/L) 71 52
Sulfate (mg/L) 1,518 1,160
TDS (mg/L) 2,575 2,090
Carbonate (mg/L) <1.0
Bicarbonate (mg/L) 399
Sodium (mg/L) 519
Potassium (mg/L) 7.66
Magnesium (mg/L) 39.9
Calcium (mg/L) 140
Total anions (meq/L) 32.1
ITotal cations (meq/L),, 33.1
MW-11
GWQS GWCL MW-11 (Quarterly Monitorinq) .i - 1
1 Contaminant (Class II) 1st Qtr. 2010 2nd Qtr. 2010 May June July August 3rd Qtr. 2010 4th Qtr. 2010
Jan. - March
2/10/2010
April-June
4/28/2010
^"'MonthlyAccl.
5/24/2010
^'WnthlyAccl.
6/16/2010
'"^Monthly Accl.
7/20/2010
^'^MbnthlyAccl.
8/25/2010
July - Sept.
9/8/2010
Oct.- Dec.
Parameters Listed in T able 2 :.
Nutrients (mg/L)
Ammonia (as N) 25 6.25 0.52 0.66 0.62 \
BNitrate + Nitrite (as N) 10 2.5 0.1 <0.1 ^0:1
Heavy Metals (pg/L)
jArsenic 50 15 <5.0 <5.0 <5.0
Beryllium 4 1 <0.50 <0.50 <0.50
jCadmium 5 1.25 <0.50 <0.50 <0.50
iChromium 100 25 <25 <25 <25
Cobalt 730 182.5 <10 <10 <10
Copper 1,300 325 <10 <10 <10
llron 11.000 2,750 149 100 106
jLead 15 3.75 <1.0 <1.0 <1.0
jManganese 800 131.29 134 137 122 99 122 128
Mercury 2 0.5 <0.50 <0,50 <0.50
Molybdenum 40 10 <10 <10 <10
Nickel 100 46.2 <20 . <20 <20
Selenium 50 12.5 <5.0 <5.0 <5.0
•
Silver 100 25 <10 <10 <10
Thallium 2 0.5 <0.50 <0.50 <0.50
Tin 17,000 4.250 <100 <100 <100 /
luranium 30 7.5 -0.92 0.96 1.06
Vanadium 60 15 <15 <15 <15
Zinc 5,000 1,250 <10 <10 <10
1 Radiologics (pGi/L)
|Gross Alpha 15 3.75 *0.6 (+/- 0.4) *0.3 (+/- 0.3) • 1 1 1 *0.6(+/-0.5) 1
VOC(ug/L) . • • . : • • ^ •••11
Acetone 700 175 <20 <20 <20
[Benzene 5 1.25 <1.0 <1.0 <1.0
2-Butanone (MEK) 4.000 1.000 <20 <20 <20
Carbon Tetrachloride 5 1.25 <1.0 / <1.0 <1.0
[Chloroform 70 17.5 <1.0 r <1.0 <1.0
IChlorGmethane 30 7.5 <1.0 <1.0 •<1.0 Dichloromethane ' 5 1.25 <1.0 <1.0 <1.0
Naphthalene 100 25 <1.0 <1.0 <1.0
Tetrahydrofuran (THF) 46 11.5 5.2 <1.0 <1.0 <1.0 <1.0 <1.0
[Toluene 1.000 250 <1.0 <1.0 <1.0 Xylenes (total) 10.000 2.500 <1.0 <i.O <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
Fluoride (mg/L) 4 1 0.51 0.49 0.52 Chloride (mg/L) 39.16 33 32 '/ • ••.' ' • • 31
Sulfate (mg/L) 1.309 1.140 1.150 1.140
TDS (mg/L) 2.528 • 2.040 2,040 , 1.960 General Inorganics Listed inPartlE.1.(c)(2)(ii)
Carbonate (mg/L) <1.0 5 <1.0 II Bicarbonate (mg/L) 410 387 410 1 Sodium (mg/L) 567 642 614
Potassium (mg/L) 6.8 7.13 7 :
Magnesium (mg/L) 19.7 23.1 20.9 Calcium (mg/L) 67 75.9 70
Total anions (meq/L) 31.3 31.5 31.3 - -
iTotai cations (meq/L)
Note: •— 29.9 33.8 32.1
Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL)
(a) = Monthly accelerateid monitoring event ,
MW-12
GWQS GWCL , MW-12 (Semi-Annual Monitoring)
Contaminant (Class III) 2nd Qtr. 2010
April-June
4/27/2010
3rd Qtr. 2010
^'^July-Sept.
9/20/2010
4th Qtr. 2010
Oct. - Pec.
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 0.6 0.14
Nitrate + Nitrite (as N) 10 5 <0.1
Heavy Metals (ug/L)
Arsenic 50 25 <5.0
Beryllium 4 2 <0.50
Cadmium 5 7 <0.50
Chromium 100 50 <25
Cobalt 730 365 <10
Copper 1,300 650 . <10 ^
llron 11,000 5,500 <30
Lead 15 7.5 <1.0
Manganese 800 2,088.80 135
Mercury 2 1 <0.50
Molybdenum 40 20 <10
Nickel r 100 60 . <20
Selenium 50 25 25.7
Silver 100 50 <10
Thallium 2 1 <0.50
Tin 17,000 8,500 <100
Uranium 30 23.5 19.8
IVanadium 60 30 <15
Zinc 5,000 2,500 18 • 1 Radiologics (pCi/L)
Gross Alpha 15 7.5 *0.1 (+/-0.3) 1 1
VOC (pg/L)
Acetone 700 350 <20
Benzene 5 2.5 <1.0
2-Butanone (MEK) 4,000 2,000 <20
Carbon Tetrachloride 5 2.5 <1.0
Chloroform 70 35 <1.0
Chloromethane 30 15 <1.0
Dichloromethane 5 2.5 <1.0
Naphthalene 100 50 <1.0
Tetrahydrofuran (THF) 46 , 23 1.8 1 Toluene 1.000 500 <1.0
Xylenes (total) 10,000 5,000 <1.0
Others
Field pH (S.U.) 6.5-8.5 6.5-8.5 7.16 6.62
• Fluoride (mg/L) 4 2 0.25
Chloride (mg/L) 80.5 64
Sulfate'(mg/L) ' • 2,560 2,390
TDS (mg/L) 4,323 3,960
General Inorganics Listed in Part I.E.I.(c)(2)(ii)
Carbonate (mg/L) 1 <1.0
Bicarbonate (mg/L) 442
Sodium (mg/L) 317
Potassium (mg/L) 12.7
Magnesium (mg/L) 215
Calcium (mg/L) 522
Total anions (meq/L) 58.9
Total cations (meq/L) 57.9
Note:
Concentrations highlighted and in bold exceed the Site Ground VVater Complaince Limit (GWCL)
(a) = Quarterly accelerated monitoring event; .
MW-14
Contaminant
-GWQS GWCL
(Class III)
MW-14 (Quarterly Monitorinq)
Contaminant
-GWQS GWCL
(Class III) 1st Qtr. 2010
Jan. - March
2/2/2010
2nd Qtr. 2010
April - June
4/21/2010
May
^^^Monthly Accl.
5/21/2010
June
<^^Monthly Accl.
6/16/2010
July
^^^Monthly Accl.,
7/20/2010
August,
^^^Monthly Accl.
8/25/2010
3rd Qtr. 2010
July-Sept.
9/8/2010
4th Qtr. 2010
Oct: - Dec.
Parameters Listed in Table 2 ^
Nutrients (mg/L)
Ammonia (as N) 25 12.5 0.12 0,07 0.13
Nitrate + Nitrite (as N) 10 5 _ 0.1 <0.1 . ^ • . <0.1 1 Heavy Metals (pg/L)
Arsenic 50 25 <5.0 <5.0 <5.0
Beryllium 4 2 <0.50 <0.50 <0.50
Cadmium 5 2.5 1.04 1.16 1.15
Chromium 100 50 <25 <25 <25
Cobalt 730 365 <10 <10 <10
Copper 1.300 650 <10 <10 <10
Iron 11.000 5.500 <30 <30 <30
Lead 15 7.5 <1.0 <1.0° <1.0
Manganese 800 2,230.30 2,060 2,070 1.920
Mercury 2 1 <0.50 <0.50 <0.50
Molybdenum 40 25 <10 <10 <10
Nickel 100 50 <20 ! <20 <20
Selenium 50 25 <5.0 <5.0 <5.0
Silver 100 50 <10 <10 <10
Thallium 2 1 <0.50 <0.50 <0.50
Tin 17.000 8.500 <100 <100 <100
Uranium 30 98 62.4 60.6 56 •
Vanadium 60 30 <15 <15 <25
Zinc 5.000 35.04 11 25 13
Radiologics (pCi/L)
Gross Alpha 15 1 7.5 | *0.4(+/-0.3)1 *0.7(+/-0.5) 1 | I 1 | *0.7 (+/-0.5) |
VOC (pg/L)
Acetone 700 350 <20 <20 '<20
Benzene 5 2.5 <1.0 <1.0 <1.0
2-Butanone (MEK) 4,000 2,000 <20 <20 <20
Carbon Tetrachloride 5 2.5 <1.0 <1.0 <1.0 ,
Chlorofdrni 70 35 <1.0 <i;o <1.0
Chloromethane 30 15 <1.0 <1.0 <1.0
Dichloromethane 5 2.5 <1.0 <1.0 <1.0
Naphthalene 100 50 <1.0 <1.0 <1.0
Tetrahydrofuran (THFJ^ 46 23 <1.0 <1.0 <1.0
Toluene 1.000 500 <1.0 <1.0 <1.0
Xylenes (total) 10.000 5.000 <1.0 <1.0 <1.0
Others
Field pH (S.U.) 6.5 - 8.5 6.5-8.5 6.46 6.29 6.36 6.45 7.19 6.48 6.51
Fluoride (mg/L) 4 0.2 0.15 0.16 0.17
Chloride (mg/L) 27 17 17 18
Sulfate (mg/L) 2,330 2.280 2,210 2.200
TDS (mg/L) 4,062 3.590 3.570 3.580
General Inorganics Listed in Part I.E.I.(c)(2)(ii)
Carbonate (mg/L) <1.0r .<1.0 <1.0v
Bicarbonate (mg/L) 500 486 503
Sodium (mg/L) 335 342 348
Potassium (mg/L) 11.9 11.6 11.8
Magnesium (mg/L) 148 145 148
Calcium (mg/L) 503 502 507
Total anions (meq/L) 56.1 54.5 54.5
Total cations (meq/L) 52.2 52.1 53
Concentrations in bold exceed the Site Ground Water Complaince Limit (GWCL)
(a) = Monthly accelerated monitoring event
MW-15
GWQS GWCL MW-15 (Semi-Annual Monitoring) ||
Contaminant (Class III) 2nd Qtr. 2010
April - June
, 4/21/2010
4th Qtr. 2010 11
Oct. - Dec.
Parameters Listed in Table 2 li
Nutrients (mg/L)
Ammonia (as N) 25 0.21 <0.05
Nitrate + Nitrite (as N) 10 0.27 0.2 /
Heavy Metals (pg/L)
Arsenic 50 25 <5.0
Beryllium 4 2 <0.50
Cadmium 5 2.5 <0.50
Chromium 100 50 . <25
Cobalt . : 730 365 <10
Copper 1,300 650 <10
Iron 11,000 817 <30
Lead 15 7.5 <1.0
Manganese 800 400 <10
Mercury 2 1 <0.50
Molybdenum 40 30 <10
Nickel 100 97 <20
Selenium 50 1287 100
Silver too 50 <10
Thallium 2 1 ; <0.50
Tin 17,000 8,500^ <100
Uranium 30 65.7 43.6
Vanadium 60 40 <15 • Zinc 5,000 2,500 21
Radiologics (pCi/L)
Gross Alpha 15 7.5 *0.3 (+1-0.4) \
VOC (ug/L)
Acetone 700 350 <20
Benzene 5 2.5 <1.0
2-Butanone (MEK) 4,000 2,000 <20
Carbon Tetrachloride 5 2.5 <1.0
Chloroform 70 35 <1.0
Chloromethane 30 15 <1.0
Dichloromethane 5 2.5 <1.0
Naphthalene' 100 50 <1.0
Tetrahydrofuran (THF) 46 23 <1.0
Toluene 1,000 500 <1.0
Xylenes (total) 10,000 5,000 <1.0
Others
Field pH (S.U.) 6.5 -8.5 6.62-8.5 6.98
Fluoride (mg/L) 4 2 0.23 • Chloride (mg/L) 57.1 35 ;
Sulfate (mg/L) 2,549.02 2,400
TDS (mg/L) 4,530 3,860
General Inorganics Listed in Part I.E.I.(c)(2)(ii)
Carbonate (mg/L) <1.0
Bicarbonate (mg/L) 453
Sodium (mg/L)^ 502
Potassium (mg/L) 10.6
Magnesium (mg/L) 155
Calcium (mg/L) 426
Total anions (meq/L) 58.3
Total cations (meq/L) 56.1 1
MW-17
Contaminant
GWQS GWCL
(Class III)
MW-17 (Semi-Annual Monitoring)
Contaminant
GWQS GWCL
(Class III) 2nd Qtr. 2010
April - June
5/3/2010
4th Qtr. 2010
Oct. - Dec.
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 0.26 <0.05
Nitrate + Nitrite (as N) ' 10 5 0.9
Heavy Metals (pg/L)
Arsenic: 50 . 25 <5.0
Beryllium 4 2 <0.50
Cadmium 5 2.5 <0.50
Chromium 100 50 <25
Cobalt 730 365 '<10
Copper 1,300 650 <10
Iron 11,000 5,500 31
Lead 15 7.5 <1.0
Manganese 800 915.4 184
Mercury 2 1 <0.50
Molybdenum 40 20 <10
Nickel 100 50 <20
Selenium 50 25 11.7
Silver 100 50 <10
Thallium 2 1 0.58
Tin 17,000 8,500 <100
Uranium 30 46.66 26.4
Vanadium 60 30 <15
Zinc 5,000 2,500 25
Radiologics (pCi/L)
Gross Alpha 15 1 2.8 1 *1.1(+/-0.5) 1
VOC (pg/L)
Acetone 700 - 350 <20
Benzene 5 2.5 <1.0
2-Butanone (MEK) 4,000 2,000 <20
Carbon Tetrachloride 5 2.5 <1.0
Chloroform 70 35 <1.0
Chloromethane 30 15 <1.0
Dichloromethane 5 2.5 <1.0
Naphthalene 100 50 <1.0
Tetrahydrofuran (THF) 46 23 <1.0
Toluene 1,000 500 <1.0
Xylenes (total) 10,000 5,000 <1.0
Others
Field pH (S.U.) 6.5 - 8.5 6.40 - 8.5 6.52
Fluoride (mg/L) 4 2 0.25
Chloride (mg/L) 46.8 35
Sulfate Qng/L) 2,860 2,480
TDS (mg/L) 5,085.42 4,030
General Inorganics Listed In Part I.E.I.(c)(2)(iO
Carbonate (mg/L) <1.0
Bicarbonate (mg/L) 499
Sodium (mg/L) 591
Potassium (mg/L) 11.2
Magnesium (mg/L) 169
Calcium (mg/L) 336
Total anions (meq/L) 60.9
Total cations (meq/L) 56.6
MW-18
1 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.
Parameters Listed in Table 2 /
Nutrients (mg/LJ
Ammonia (as N) 25 0.27 <0.05
Nitrate + Nitrite (as N) 10 2.5 <0.1
Heavy Metals (pg/L)
Arsenic 50 25 <5.0
Beryllium 4 2 <0.50
Cadmium 5 2.5 <0.50
Chromium 100 50 <25
Cobalt 730 365 <10
Copper 1,300 650 <10
Iron 11,000 414.68 104 ^• Lead 15 7.5 <1.0
Manganese , 800 350 57
Mercury 2 1 <0.50
Molybdenum ; 40 20 <10
Nickel 100 50 <20
Selenium 50 25 100
Silver 100 50 <10
Thallium. 2 1.95 3.32 3.73 3.64
Tin 17,000 8,500 <100
Uranium 30 55.1 47.2 49 44.3
Vanadium 60 30 <15
Zinc 5,000 2,500 75
Radiologics (pCI/L)
Gross Alpha 15 7.5 *i;.0 (+/-0.5) •• •.•I:. •• VOC (ug/L)
Acetone 700 350 <20
Benzene 5 2.5 <1.0
2-Butanone (MEK) 4,000 2,000 <20
Carbon Tetrachloride 5 2.5 <1.0
Chloroform 70 35 <1.0
Chloromethane 30 15 <1.0
Dichloromethane 5 2.5 <1.0
Naphthalene 100 50 <1.0
Tetrahydrofuran (THF) 46 23 <1.0
Toluene 1,000 500 <1.0
Xylenes (total) 10,000 5,000 <1.0
Others
Field pH (S.U.) 6.5 - 8.5 6.25-8.5 6.37 6.21 V mm 7.23
Fluoride (mg/L) 4 0.45
Chloride (mg/L) 69.23 52
Sulfate (mg/L) 1,938.90 -'^'^ f^miin-1.930
TDS (mg/L) 3,198.77 m •;;••;•• 3,190
General Inorganics Listed in Part I.E 1 .(c)(2)(ii)
Carbonate (mg/L) <1.0
Bicarbonate (mg/L) 478
Sodium (mg/L) 172 • Potassium (mg/L) 8.76
Magnesium (mg/L) 127
Calcium (mg/L) 540
Total anions (meq/L) 49.8
Total cations (meq/L) 45.1
Note:
Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL)
MW-19
Contaminant
GWQS GWCL
(Class III)
MW-19 (Semi-Annual Monitoring)
Contaminant
GWQS GWCL
(Class III) 1st Qtr. 2010
Jan. - March
1/26/2010
2nd Qtr. 2010
April - June
5/4/2010
3rd Qtr. 2010
^'^July - Sept
9/15/2010
4th Qtr. 2010
OcL-Dec.
Parameters Listed in Table 2 . •
Nutrients (mg/L)
Ammonia (as N) 25 0.31 <0.05
Nitrate + Nitrite (as N) 10 2.83 2.8 2.6
Heavy Metals (MQ/L)
Arsenic 50 25 <5.0
Beryllium 4 2 <0.50
Cadmium 5 2.5 <0.50
Chromium 100 50 <25
Cobalt 730 365 <10
Copper 1,300 650 <10
Iron 11,000 5,500 <30
Lead 15 7.5 <1.0
Manganese 800 400 <10
Mercury 2 1 <0.50
Molybdenum 40 20 <10
Nickel 100 50 <20
Selenium 50 28.96 11.6
Silver 100 50 <10
Thallium ' 2 2.1 0.56 0.55
Tin 17,000 8,500 <100
Uraniunri ^ 30 21.43 7.56 6.93
Vanadium 60 - 30 <15
Zinc 5,000 2,500 <10
Radiologics (pCi/L)
Gross Alpha 15 1 2.36 1 1 *0.9(+/-0.5) V 1
VOC (ug/L)
Acetone 700 350 <20
Benzene 5 2.5 <1.0
2-Butanone (MEK) 4,000 2,000 <20
Carbon Tetrachloride 5 2.5 <1.0
Chloroform ^ 70 35 <1.0
Chloromethane 30 15 <1.0
Dichloromethane 5 2.5 <1.0
Naphthalene 100 50 <1.0
Tetrahydrofuran (THF) 46 23 <1.0
Toluene 1,000 500 <1.0
Xylenes (total) 10,000 5,000 <1.0
Others
Field pH (S.U.) 6.5-8.5 6.78-8.5 6.87 6.61 6.92
Fluoride (mg/L) 4 1.39 1 0.98
Chloride (mg/L) 104.41 28
Sulfate (mg/L) 2,534.10 543
TDS (mg/L) 4,257.42 1,130
General Inorganics Listed in Part I.E.I .(c)(2)(ii)
Carbonate (mg/L) <1.0
Bicarbonate (mg/L) 273
Sodium (mg/L) 107
Potassium (mg/L) 4.22
Magnesium (mg/L) 49.6
Calcium (mg/L) 150
Total anions (meq/L) 16.8
Total cations (meq/L) 16.3 ' •• •:. V. • ••••
Note:
Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL)
(a) = Quarterly accelerated monitoring event
MW-20
GWQS GWCL MW-20 (Quarterly Monitoring)
Contaminant (Class III) 1st Qtr. 2010 2nd Qtr. 2010 3rd Qtr. 2010 4th Qtr. 2010
Jan. - March
2/11/2010
April - June
5/27/2010
July - Sept.
9/16/2010
Oct. - Dec.
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 6.25 <0.05 • <0^05 0.07
Nitrate + Nitrite (as N) 10 2.5 6.5 8.4 7.7
Heavy Metals (|jg/L)
Arsenic 50 12.5 <5.0 :<5.o <5.0
Beryllium . 4 1 <0.50 <,0.50 <0.50 .. .:, .' • •••.••. Cadmium 5 1.25 <0.50 <0.50 <0.50
Chromium 100 25 <25 <25 <25
Cobalt 730 182.5 <10 <10 <10
Copper 1,300 325 <10 <10 <10
Iron . 11,000 2.750 <30 <30 <30
Lead 15 3.75 <1.0 <1.0 <1.0
Manganese 800 200 25 13 <10
Mercury 2 0.5 <0.50 <0.50 <0.50
Molybdenum 40 10 <10 <10 <10
Nickel 100 25 <20 <20 <20
Selenium 50 12.5 <5.0 <5.0 <5.0
Silver 100 25 <10 <10 <10 " •• ••• •/ . Thallium 2 0.5 0.58 0.58 <0.50
Tin 17.000 4,250 <100 <100 <100
Uranium 30 7.5 10.2 8.46 8.26 ' • p . ••'•
Vanadium 60 15 <15 <15 <25
Zinc 5,000 1,250 92 27 38
Radiologics (pCi/L)
Gross Alpha 15 3.75 *0.7 (+/- 0.4) *0.3(+A0.4) *0.7(+/-0.5) 1
VOC(Mg/L)
Acetone 700 175 <20 <20 <20
Benzene 5 1.25 <1.0 <1.0 <1.0
2-Butanone (MEK) 4,000 1.000 <20 <20 <20
Carbon Tetrachloride 5 1.25 <1.0 <1.0 <1.0
Chloroform 70 17.5 <1.0 <1.0 <1.0
Chloromethane 30 7.5 <1.0 <1.0 <1.0
Dichloronriethane 5 1.25 <1.0 <1.0 -<1.0
Naphthalene 100 25 <1.0 <1.0 <1.0 • • •••,•• • .-. n
Tetra hyd rofuran (TH F) 46 11.5 <1.0 <1.0 <1.0
Toluene 1,000 250 <1.0 <1.0 <1.0
Xylenes (total) 10,000 2,500 <1.0 <1.0 <1.0
Others
Field pH (S.U.) 6.5-8.5 7.05 6.95 7.16
Fluoride (mg/L) 4 1 0.33 , 0.37 0.36
Chloride (mg/L) 70 57 65
Sulfate (mg/L) 4,130 4,050 3,580
TDS (mg/L) 5,150 5.610 , 5,540
General Inorganics Listed in Part I.E.I.(c)(2)(ii)
Carbonate (mg/L) <1.0 <1.0 <1.0
Bicarbonate (mg/L) 235 231 232
Sodium (mg/L) 1,370 1,340 : 1,360
Potassium (mg/L) 48 45.5 47.2
Magnesium (mg/L) 90.8 88.8 92.1
Calcium (mg/L) 349 340 352
Total anions (meq/L) 92.3 89.8 80.7
Total cations (meq/L) 85.8 83.7 85.3
MW-22
GWQS GWCL MW-22 (Quarterly Monitoring)
Contaminant (Class III) 1st Qtr. 2010 2nd Qtr. 2010 3rd Qtr. 2010 4th Qtr. 2010
Jan. - March
2/8/2010
April - June
5/5/2010
July - Sept.
9/7/2010
Oct. - Dee.
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 6.25 0.59 0.66 0.81
•
Nitrate + Nitrite (as N) 10 2.5 2.7 3.1 2.3
Heavy Metals (pg/LJ
Arsenic 50 12.5 <5.0 <5.0 <5.0
Beryllium 4 1 3.15 2.88 2.71
Cadmium 5 1.25 92.2 93 83.3
Chromium 100 25 <25 <25 <25
Cobalt 730 182.5 294 284 238
Copper 1,300 325 <10 19 12 ' 1 • •••'•'.
Iron 11,000 2.750 <30 <30 <30
Lead 15 3.75 1.1 1.1 <1.0
Manganese 800 200 31.300 33,400 29,200
Mercuiy 2 0.5 0.56 <0.50 <0.50
Molybdenum 40 10 494 596 622
Nickel 100 25 138 136 112
Selenium 50 12.5 9.8 16.4 13
Silver 100 25 <10 <10 <10
Thallium 2 0.5 1.5 1.21 <0.50
Tin 17,000 4.250 <100 <100 <100
Uranium 30 7.5 43.6 45.5 48.6
Vanadium 60 15 <15 <15 <15
Zinc 5,000 1,250 606 603 390
Radiologics (pCi/L)
Gross Alpha 15 3.75 *3.1 (+/-0.8) 6.5(+/-1.0) 8.6(+/-1.2) 1
VOC iUQ/l)
Acetone 700 175 <20 <20 <20
Benzene 5 1.25 <1.0 <1.0 <1.0
2-Butanone (MEK) 4,000 1.000 <20. <20 <20
Carbon Tetrachloride 5 1.25 <1.0 <1.0 <1.0
Chloroform 70 17.5 <1.0 <1.0 <1.0
Chloromethane 30 7.5 <1.0 <1.0 <1.0
Dichloromethane 5 1.25 <1.0 <1.0 <1.0
Naphthalene 100 25 <1.0 <1.0 <1.0
Tetrahydrofuran (THF) 46 11.5 <1.0 <1.0 <1.0
Toluene 1.000 250 <1.0 <1.0 <1.0
Xylenes (total) 10,000 2,500 <1v0 <1.0 <1.0
Others
Field pH (S.U.) 6.5-8.5 5.59 5.58 5;82
Fluoride (mg/L) 4 1 3.09 3.27 2.89
Chloride (mg/L) 61 59 56
Sulfate (mg/L) 4,990 5,330 4,660
TDS (mg/L) 6.920 7,750 6,700
General Inorganics Listed in Part I.E.I.(c)(2)(ii)
Carbonate (mg/L) <1.0 <1.0 <1.0
Bicarbonate (mg/L) 532 525 590
Sodium (mg/L) 248 271 266
Potassium (mg/L) 23.8 22.9 21.6
Magnesium (mg/L) 942 991 860
Calcium (mg/L) 439 472 441
Total anions (meq/L) 115 122 109
Total cations (meq/L) 111 118 105
MW-23
1 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.
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 0.6 <0.05
Nitrate + Nitrite (as N) 10 5 0.2
Heavy Metals (pg/L) - • • Arsenic 50 25 <5.0
Beryllium 4 2 <0.50
Cadmium 5 2.5 <0.50
Chromium 100 50 <25
Cobalt 730 365 <10
Copper 1,300 650 <10
Iron 11,000 5,500 104
Lead 15 7.5 <1.0
Manganese 800 550 184
Mercury 2 1 <0.50
Molybdenum 40 20 <10
Nickel 100 50 <20
Selenium 50 25 <5.0
Silver 100 50 <10
Thallium 2 1.5 0.69
Tin 17,000 8,500 <100
Uranium 30 32 14.9
Vanadium 60 30 <15 '
Zinc 5,000 74-47
Radiologics (pCi/L)
Gross Alpha 15 1 2.86 1 *2.3(+/-0.6) 1 1
VOC (pg/L)
Acetone 700 350 <20
Benzene 5 2.5 <1.0
2-Butanone (MEK) 4,000 2,000 <20
Carbon Tetrachloride 5 2.5 <1.0
• / Chloroform 70 35 <1.0
Chloromethane 30 5.7 <1.0
Dichloromethane 5 2.5 <1.0
Naphthalene 100 50 <1.0
Tetrahydrofuran (THF) 46 23 <1.0
Toluene 1,000 500 <1.0
Xylenes (total) 10,000 5,000 <1.0
Others
Field pH (S.U.) 6.5-8.5 6.5 - 8.5 ,••:••.•• 7.05
Fluoride (mg/L) 4 2 0.23
Chloride (mg/L) 10 7
Sulfate (mg/L) 2,524 2.340
TDS (mg/L) 3,670 ^ 3,600 ;
General Inorganics,Llstedin Part I.E.I.(c)(2)(li)
Carbonate (mg/L) <1.0
Bicarbonate (mg/L) 310
Sodium (mg/L) 394
Potassium (mg/L) ... 10.3
Magnesium (mg/L) 144
Calcium (mg/L) 448
Total anions (meq/L) 54 ,
ITotal cations (meq/L) 51.5
Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL)
(a) = Quarterly accelerated monitoring event
MW-24
Contaminant
GWQS GWCL
(Class III)
MW-24 (Semi-Annual Monitoring)
Contaminant
GWQS GWCL
(Class III) 2nd Qtr. 2010
April - June
5/6/2010
3rd Qtr. 2010
^'^July-Sept.
9/21/2010
4th Qtr. 2010
Oct. - Dec.,
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 7 0.51
Nitrate + Nitrite (as N) 10 5 <0.1
Heavy Metals (pg/L)
Arsenic 50 17 <5.0
Beryllium 4 2 <0.50
Cadmium 5 2.5 4.28 ^••^••:..,....,5ld^ .:•::.
Chromium 100 50 <25
Cobalt 730 365 <10
Copper 1,300, 650 <10
Iron 11,000 4,162 911
Lead 15 7.5 <1.0
Manganese .800 7,507 4,530
Mercury 2 1 <0.50
Molybdenum 40 20 <10
Nickel 100 50 34
Selenium 50 25 5.8
Silver 100 50 <10
Thallium 2 1 1.57
Tin 17,000 8,500 <100
Uranium 30 11.9 1.02
Vanadium 60 30 <15
Zinc 5,000 2,500 89
Radiologics (pCi/L) • • • • • • • Gross Alpha 1,5 1 7.5 1 *0.4 (+/-0.4) 1 \
VOC (ug/L) .1 •.•••.••
Acetone 700 350 <20
Benzene 5 2.5 <1.0
2-Butanone (MEK) 4,000 2,000 <20
Carbon Tetrachloride 5 2.5 <1.0
Chloroform 70 35 <1.0
Chloromethane 30 15, <1.0
Dichloromethane 5 2.5 <1.0
Naphthalene 100 50 . <1.0
Tetrahydrofuran (THF) 46 23 <1.Q
Toluene 1,000 500 <1.0
Xylenes (total) 10,000 5,000 <1.0
Others
Field pH (S.U.) 6.5-8.5 6.5 - 8.5 5,78 6.64
Fluoride (mg/L) 4 0.36 0:14
Chloride (mg/L) 71 46
Sulfate (mg/L) . 2,903 2.560
TDS (mg/L) . 4,450 4,320
General Inorganics Listed In Part I.E.1.(c)(2)(ll)
Carbonate (mg/L) <1.0
Bicarbonate (mg/L) 306
Sodium (mg/L) — 510
Potassium (mg/L) 12.5
Magnesium (mg/L) 178
Calcium (mg/L) 485
Total anions (meq/L) 59.6
Total cations (meq/L) 61.3
Cbncentrations 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 111) 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
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 0.77 0.19 0.50 0.61
Nitrate-+ Nitrite (as N) 10 5 <0.1 <0.5 <0.1
Heavy Metals (MQ/L)
Arsenic 50 25 <5.0 <5.0 <5.0"
Beryllium 4 2 <0.50 <0.50 <0.50
Cadmium 5 1.5 1.26 1.44 1.40
Chromium 100 50 <25 <25 <25
Cobalt 730 365 <10 <10 <10
Copper 1,300 650 <10 <10 <10
Iron 11.000 5,500 <30 <30 <30
Lead 15 7.5 <1.0 <1.0 <1.0
Manganese 800 1,806 1.560 1,650 1.580
Mercury 2 1 <0.50 <0.50 <0.50
Molybdenum ^ 40 20 <10 12 <10
Nickel 100 50 <20 <20 ,<20
Selenium 50 25 <5.0 <5.0 <5.0
Silver 100 50 <10 <10 <10
Thallium 2 1.1 0.96 1.04 ,0.99
Tin 17.000 8,500 <100 <100 <100
Uranium 30 6.5 5.93 6.43 6.57
Vanadium 60 30 <15 <15 <15
Zinc 5,000 2,500 <10 21 <10
Radiologics (pCi/L)
Gross Alpha 15 7.5 *0.6 (+/- 0,3) *0.6(+/-0.4) *1.2(+/-0.6) 1
VOC (ug/L)
Acetone 700 350 <20 <20 <20
Benzene 5 2.5 <1.0 <1.0 <1.0
2-Butanone (MEK) 4,000 2,000 <20 <20 <20
Carbon Tetrachloride 5 2.5 <1.0 <1.0 <1.0
Chloroform 70 35 <1.0 <1.0 <1.0
Chloromethane 30 15 <1.0 <1.0 <1.0
Dichloromethane 5 2.5 <1.0 <1.0 <1.0
Naphthalene 100 50 <1.0 <1.0 <1.0
Tetrahydrofuran (THF) 46 23 <1.0 <1.0 <1.0
Toluene 1.000 500 <1.0 <1.0 <1.0
Xylenes (total) 10.000 5,000 <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
Fluoride (mg/L) 4 0.42 0.31 0.33 0.34
Chloride (mg/L) 35 31 31 31
Sulfate (mg/L) 1,933 1,630 1.660 1,760
TDS (mg/L) 2.976 2.670 2,780 2,790
General Inorganics Listed in Part I.E.1.(c)(2)(ii)
Carbonate (mg/L) <1.0 <1.0 <1.0
Bicarbonate (mg/L) 432 424 435
Sodium (mg/L) 300 317 306
Potassium (mg/L) 9.5 9.74 9.6
Magnesium (mg/L) 116 122 125
Calcium (mg/L) 351 368 367
Total anions (meq/L) 41.9 42.4 44.6
Total cations (meq/L) 40.4 . 42.4 42.1
Note:
Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL)
(a) = monthly accelerated monitoring event
MW-26
Contaminant
GWQS GWCL
(Class III)
MW-26 (Quarterly Monitorinq) -
Contaminant
GWQS GWCL
(Class III) 1st Qtr. 2010
Jan. - March
2/2/2010
2nd Qtr. 2010
April - June
4/22/2010
May
<°^Monthly Accl.
5/24/2010
June
^^^Monthly Accl.
6/16/2010
July
^^.^Monthly Accl.
7/21/2010
August
^'^Monthly Accl.
8/16/2010
3rd Qtr. 2010
July - Sept.
9/16/2010
4th Qtr. 2010
Oct. - Dec.
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 0.92 0.09 0.18 0.34
Nitrate + Nitrite (as N) 10 0.62 .:--:i..1..3^:^ 2 0.3. 0.4 0.6 0.6 0.7
Heavy Metals (pq/L)
Arsenic 50 25 <5.0 <5.0 , <5.0
Beryllium 4 2 <0.50 <0.50 ! ••••• <0.50
Cadmium 5 2.5 <0.50 <0.50 <0.50
Chromium . 100 50 <25 <25 <25
Cobalt 730 365 <10 <10 <10
Copper 1.300 650 <10 <10 <10
Iron 11,000 2,675.83 485 513 405
Lead 15 7.5 <1.0 <1.0 <1.0
Manganese 800 1,610 1,350 1,550 1,420
Mercury 2 1 <0.50 <0.50 <0.50
Molybdenum 40 20 <10 <10 • <10
Nickel 100 50 <20 <20 <20
Selenium 50 25 9.1 8 6.3 )
Silver 100 50 <10 <10 <10
Thallium 2 1 <0.50 <0.50 <0.50
Tin 17,000 8.500 <T00 <100 <100
Uranium 30 41.8 58.7 37.4 36.6 34.4 71.8 72.7
Vanadium 60 30 <15 <15 <15
Zinc 5,000 2.500 <10 21 <10
' Radiologics (pCi/L)
Gross Alpha 15 j 4.69 1 *2.4(+/-0.5) 1 4.6(+/-0.9) | I , I 1 1 *2.5(+/-0.7) j
VOC (pq/L)
Acetone 700 350 <20 <20 <20 <20 <20 <20
Benzene 5 2.5 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0
2-Butanone (MEK) 4.000 2.000 <20 <20 <20 , <20-<20 <20
Carbon Tetrachloride 5 5 <1.0 <1.0 <1.0 <1;0 <1.0 <1.0
Chloroform 70 70 700 1700 800 900 2,800 . . 2,100 w::.a
Chloromethane 30 ,30 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0
Dichloromethane 5 5 1 i m-^.-^'-::n 2.2 :[^^^^--h..m:'-45
Naphthalene 100 50 <1.0 <1.0 <20 <20 <20 <20
Tetrahydrofuran (THF) 46 23 <1.0 <1.0 <1.0 <1.0
Toluene 1,000. 500 <1.0 <1.0 <20 <20 <20 <20
Xylenes (total) 10,000 5,000 <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 6.59 7.18 6.36 6.98 6.45 6.39 6.60
Fluoride (mg/L) 4 2 0.29 0.27 0.27
Chloride (mg/L) 58.31 57 80 47 52 49 64
Sulfate (mg/L) 2,082.06 1,840;. 1,960 2,010
TDS (mg/L) 3,284.19 3.100 3,280 3,440
General Inorganics Listed in Part l:E.i:(c)(2)(ii) /
Carbonate (mg/L) <1.0 <1.0 <1.0
Bicarbonate (mg/L) 417 419 436
Sodium (mg/L) 173 169 178 -
Potassium (mg/L) 10.6 10.9 11
Magnesium (mg/L) 165 158 166
Calcium (mg/L) 495 501 506
Total anions (meq/L) 47.3 49.3 50.8
Total cations (meq/L) 46.1 45.6 47
WWI IWWI IU UUWI 1^ I 11^1 IIIN^I liV/SI (^1 IVI III MWIU WAUCf
(a) = Monthly accelerated monitoring event J Water Complaince Limit (GWCL)
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
3/15/2010
April - June
5/3/2010
<^>July - Sept.
9/14/2010
Oct. - Dec.
Parameters Listed In Ji able 2
Nutrients (mg/L)
Ammonia (as N) 25 12.5 <0:05
Nitrate + Nitrite (as N) 10 5.6 5.8
Heavy Metals (jjg/L)
Arsenic 50 25 <5.0
Beryllium 4 2 <0.50
Cadmium 5 2.5 <0.50
Chronnium 100 50 <25
Cobalt 730 365 <10
Copper^^ 1,300 650 <10
Iron 11,000 5,500 <30
Lead 15 7.5 <1.0
Manganese 800 400 <10
Mercury 2 1 <0.50
Molybdenum 40 20 <10
Nickel 100 50 <20
Selenium ^ 50 25 12.2
Silver 100 50 <10
Thallium 2 1 <0.50
Tin 17,000 8,500 <100
Uranium 30 34 28.9
Vanadium 60 30 <15
Zinc 5.000 2,500 <10
Radiologics (pCI/L)
Gross Alpha 15 2 *1.6 (+/- 0.5) 1
VOC (pg/L)
Acetone 700 350 <20
Benzene 5 2.5 : <1.0
2-Butanone (MEK) 4,000 2,000 <20
Carbon Tetrachloride 5 2.5 <1.0
Chloroform 70 35 <1.0
Chloromethane 30 15 <1.0
Dichloromethane 5 2.5 <1.0
Naphthalene 100 50 <1.0
Tetrahydrofuran (THF) 46 23 <1.0
Toluene 1,000 500 <1.0
Xylenes (total) 10,000 5,000-<1.0
Others
Field pH (S.U.) 6.5 - 8.5 6.5-8.5 6.79 6.78 7.68
Fluoride (mg/L) 4 0.85 0.66
Chloride (mg/L) 38 42 42
Sulfate (mg/L) 462 . 469 461
TDS (mg/L) 1.075 1,080 1,160 1,060
General Inorganics Listed In Part I.E.I.(c)(2)(il)
Carbonate (mg/L) <1.0
Bicarbonate (mg/L) 466
Sodium (mg/L) 71.9
Potassium (mg/L) : 4.14
Magnesium (mg/L) 75.8
Calcium (mg/L) 173
Total anions (meq/L) 19
Total cations (meq/L) 18.1
Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL)
(a) = Quarterly accelei^ated monitoring event
MW-28
GWQS GWCL
(Class III)
MW-28 (Semi-Annual Monitoring)
j Contaminant
GWQS GWCL
(Class III) 2nd Qtr. 2010
April - June
4/19/2010
3rd Qtr. 2010
<'Ouly-Sept.
9/14/2010
4th Qtr. 2010
Oct. - Dec.
Parameters Listed In Table 2
Nutrients (mg/L)
Ammonia (as N) 25 12.5 0.1
Nitrate + Nitrite (as N) . 10 5 0.2
Heavy Metals (pg/L)
Arsenic 50 21 11.9
Beryllium 4 2 <0.50
Cadmium 5 5.2 4.2
Chromium 100 50 <25 .y -
Cobalt 730 47 30
Copper 1,300 650 <10
Iron 11,000 299 <30
Lead 15 : 7.5 <1.0
Manganese 800 1,837 1,550
Merciury 2 1 <0.50
Molybdenum 40 i 20 <10
Nickel 100 50 26
Selenium 50 11.1 7.4
Silver 100 50 <10
Thallium 2 1 0.93
Tin 17,000 8,500 <100
Uranium 30 4.9 3.36
Vanadium 60 30 <15
Zinc i 5,000 83 59
Radiologics (pCI/L)
Gross Alpha 15 1 2.42 1 *1.9(+/-0.6) 1 1
VOC (ug/L)
Acetone 700 350 <20
Benzene 5 2.5 \ <1.0
2-Butanone (MEK) 4,000 2,000 <20
Carbon Tetrachloride 5 2.5 <1.0
Chloroform 70 35 <1.0
Chloromethane 30 4.6 <1.0
Dichloromethane 5 2.5 <1.0 . • Naphthalene 100 50 <1.0
Tetrahydrofuran (THF) 46 23 <1.0
Toluene 1,000 500 <1.0
Xylenes (total) 10,000 5,000 <1.0
Others
Field pH (S.U.) 6.5-8.5 6.1-8.5 5.67 ••S^dt -.- .1
Fluoride (mg/L) 4 0.73 0.6
Chloride (mg/L) 105 108 106
Sulfate (mg/L) 2,533 2,310
TDS (mg/L) 3,852 3.670
Generallnorqanlcs Listed in Part I.E.I.(c)(2)(li)
Carbonate (mg/L) <1.0
Bicarbonate (mg/L) 158
Sodium (mg/L) 303
Potassium (mg/L) 11.4
Magneislum (mg/L) 163
Calcium (mg/L) 500
Total anions (meq/L) 53.7
iTotal cations (meq/L) 51.9 1
Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL)
(a) = Quarterly accelerated monitoring event.
MW-29
Contaminant
GWQS GWCL
(Class ill)
MW-29 (Semi-Annual Monitoring)
Contaminant
GWQS GWCL
(Class ill) 2nd Qtr. 2010
April - June
4/27/2010
4th Qtr. 2010
Oct.-Dec.
Parameters Listed In Table 2
i Nutrients (nig/L)
Ammonia (as N) 25 1.3 0.85
Nitrate + Nitrite (as N). 10 5 <0.1
Heavy Metals (ug/L)
Arsenic 50 25 <5.0
Beryllium 4 j : 2 <0.50
Cadmium 5 2.5 <0.50
Chromium 100 50 <25
Cobalt 730 365 <10
Copper 1,300 650 <10
Iron 11,000 1,869 1,630
Lead 15 7.5 <1.0
Manganese 800 5,624 4,820^
Mercury 2 - I - • <0.50
Molybdenum 40 20 <10
Nickel 100 50 <20
Selenium 50 25 <5.0
Silver 100 50 <10
Thallium 2 1.2 <0.50
Tin 17,000 8,500 <100 • Uranium 30 , 15 10.8 1 Vanadium 60 30 <15 1 Zinc 5,000 30 25 1 Radiologics (pCi/Ll
Gross Alpha 15 1 2 1 *0.8(+/-0;4) 1
VOC (pg/L) ^
Acetone 700 350 <20
Benzene 5 2.5 <1.0
2-Butanone (MEK) 4,000 2,000 <20
Carbon Tetrachloride 5 2.5 <1.0
Chloroform 70 35 <1.0
Chloromethane 30 15 <1.0
Dichloromethane 5 2.5 <1.0
Naphthalene , 100 50 <1.0
Tetra hycj rof uran (THF) 46 23 <1.0
Toluene 1,000 500 <1.0
Xylenes (total) 10,000 5,000 <1.0
Others
Field pH (S.U.) 6.5 - 8.5 6.46-8.5 6.82
Fluoride (mg/L) 4 1.1 0.76
Chloride (mg/L) 41 35
Sulfate (mg/L) 2,946 2,770
TDS (mg/L) ' 4,400 4,400
General Inorganics Listed in Part I.E.I.(c)(2)(li)
Carbonate (mg/L) <1.0
Bicarbonate (mg/L) 358
Sodium (mg/L) 516
Potassium (mg/L) 17.4
Magnesium (mg/L) 225
Calcium (mg/L) 506
Total anions (meq/L) 64.6
[Total cations (meq/L) , 66.6
MW-30
GWQS GWCL MW-30 (Quarterly Monitoring),
Contaminant (Class II) 1st Qtr. 2010 2nd Qtr. 2010 May June July . August 3rd Qtr. 2010 4th Qtr. 2010
March April - June '^>Monthly Accl. ^^^Monthly Accl. '"^Monthly Accl. ^^>Monthly Accl. July -.Sept. Oct. - Dec.
2/9/2010 4/27/2010 5/24/2010 6/15/2010 7/21/2010 8/24/2010 9/14/2010
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 0.14 <0.05 <0.05 <0.05
Nitrate + Nitrite (as N) 10 2.5 16.1 15.8 17 •IfJ...;..:--^ . ••• -15 '^-^••• Heavy Metals (ug/L) :
Arsenic 50 12.5 <5.0-<5.0 <5.0
Beryllium 4 1 <0.50 <0.50 <0.50
Cadmium 5 1.25 <0.50 <0.50 <0.50
Chromium 100 25 <25 <25 <25
Cobalt 730 182.5 <10 , <10 <10
Copper 1.300 325 <10 <10 <10
Iron 11,000 2,750 86 108 92
Lead 15 3.75 <1.0 <1.0 <1.0 s Manganese 800 61 43 38 40
Mercury .2 0.5 <0.50 <0.50 <0.50
Molybdenum 40 10 <10 <10 <10
Nickel 100 25 <20 <20 <20
Selenium 50 34 32 35.3 35.6 32.6
Silver 100 25 <10 <10 <10 ; •;
Thallium 2 0.5 <0.50 <0.50 <0.50
Tin 17,000 4,250 <100 <100 <100
Uranium 30 8.32 6.82 6.82 7.10 Vanadium 60 15 <15 <15 <15 .
Zinc ^ 5,000 1,250 11 <10 <10
Radiologics (pCi/L)
Gross Alpha 15 . 3.75 *0.6(+/-0.4) *0.1 (+/- 0.3) *0.6 (+/- 0.3) I VOC (ug/L)
Acetone 700 175 <20 . <20 <20
Benzene 5 1.25 <1.0 <1.0 <1.0 2-Butanone (MEK) 4,000 1,000 ' <20 <20 <20
Carbon Tetrachloride 5 1.25 ,<1.0 <1.0 <1.0
Chloroform 70 17.5 <1.0 <1.0 <1.0
Chloromethane 30 7.5 <1.0 <1.0 <1.0
Dichloromethane : 5 1.25 <1.0 <1.0 • V . <1.0
Naphthalene 100 25 <1.0 <1.0 <1.0
Tetrahydrofuran (THF) 46 11.5 <1.0 <1.0 <1.0
Toluene 1,000 250 <1.0 <1.0 <1.0
Xylenes (total) 10,000 2,500 <1.0 <1.0 <1.0
Others
Field pH (S.U.) 6.5-8.5 6.5 - 8.5 6.65 6.55 6.62 7.47 6.80 : 6.73 6.80
Fluoride (mg/L) 4 0.51 0.35 0.35 0.36
Chloride (mg/L) 128 127 97 111
Sulfate (mg/L) 972 767 798 756
TDS (mg/L) 1,918 1,510 1.570 1.700
General Inorganics Listed in Part I.E 1.fc)(2)(iiy
Carbonate (mg/L) <1.0 <1.0 <1.0
Bicarbonate (mg/L) 198 196 200
Sodium (mg/L) 103 111 -106
Potassium (mg/L) 6.9v 7.14 6.9
Magnesium (mg/L) 65.1 71.5 67.
Calcium (nig/L) 251 278 262
Total anions (meq/L) 24 22.6 23.3
Total cations (meq/L) 22.5 24.7 23.4
Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL)
(a) = Monthly accelerated monitoring event
MW-31
GWQS GWCL MW-31 (Quarterly Monitoring) Contaminant (Class III) 1st Qtr. 2010 2nd Qtr. 2010 May June July August ; 3rd Qtr. 2010 4th Qtr. 2010
Jan. - March April-June ^^^Monthly Accl. ^^^Monthly Accl. <^>MonthlyAccl. <^>Monthly Accl. July ^ Sept. Oct. - Dec.
2/9/2010 4/20/2010 5/21/2010 6/15/2010 7/21/2010 8/24/2010 9/13/2010
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N)' 25 12.5 <0.05 <0.05 <0.05
Nitrate + Nitrite (as N) 10 5 , 21.7 22.5 • •• 23 20 • • 22 • • • • • • 21
Heavy Metals (ug/L)
Arsenic 50 25 <5.0 <5.0 <5.0
Beryllium 4 2 <0.50 <0.50 <0.50
Cadmium 5 2.5 <0.50 <0.50 <0.50
Chromium 100 50 <25 <25 <25
Cobalt 730 365 <10 <10 <10
Copper 1,300 650 <10 <10 <10
Iron 11,000 5.500 <30 <30 <30
Lead 15 7.5 <1.0 <1.0 <1.0
Manganese 800 400 <10 <10 '<10
Mercury 2 1 <0.50 <0.50 <0.50
Molybdenum 40 20 <10 <10 <10
Nickel 100 50 <20 <20 <20
Selenium 50 71 60.8 59.6 64.4
Silver 100 50 <10 <10 <10
Thallium 2 1 <0i50 <0.50 <0.50
Tin 17,000 8,500 <100 <100 <100
Uranium 30 9.1 7.12 6.74 7.23
Vanadium 60 30 <15 <15 <15
Zinc 5,000 2,500 <10 <10 <10
Radiologics (pCi/L)
Gross Alpha 15 7.5 *0.7(+/-0.4) 1 *0.8(+/-0.5) *0.5(+/-0.4) 1
VOC (UQ/L)
Acetone 700 350 <20 <20 <20
Benzene '5 2.5 <1.0 <1.0 <1.0
2-Butanone (MEK) 4.000 2,000 <20 <20 <20
Carbon Tetrachloride 5 2.5 <1.0 -<1.0 <1.0
Chloroform 70 35 <1.0 <1.0 <1.0
Chloromethane 30 6.1 <1.0 <1.0 <1.0
Dichloromethane 5 2.5 <1.0 <1.0 <1.0
Naphthalene 100 50 <i.b ^ <1.0 <1.0
Tetrahydrofuran (THF) 46 23 <1.0 , <1.0 <1.0
Toluene 1,000 500 <1.0 <i.o. <1.0
Xylenes (total) 10,000 5,000 <1.0 <1.0 <1.0
others
Field pH (S.U.) 6.5-8.5 6.5-8.5 6:96 7.38 6.95 7.01 7.80 7.10 7.66
Fluoride (mg/L) 4 2 0.88 ' 0.84 0.89
Chloride; (mg/L) 143 128 128 139
Sulfate (mg/L) 532 507 522 527
TDS (mg/L) 1,320 1,150 1.220 1,330
General Inorganics Usted in Part I.E. 1.(c)(2)(ii) ^ ;
Carbonate (mg/L) <1.0 <1.0 <1.0
Bicarbonate (mg/L) 224 220 226
Sodium (mg/L) 92.2 91.3 91
Potassium (mg/L) 6.2 5.8 5.7
Magnesium (mg/L) 80.2 79.4 78.1
Calcium (mg/L) 170 162 164
Total anions (meq/L) 19.4 18.1 20.1
iTotal cations (meq/L) 19.3 18.8 18.7
Concentrations highlighted and in bold exceed the Site'Ground Water Corhplaince Limit (GWCL)
(a) = Monthly accelerated monitoring event
MW-32
Contaniinant
GWQS GWCL
(Class 111)
MW-32 (Semi-Annual Monitoring)
Contaniinant
GWQS GWCL
(Class 111) 2nd Qtr. 2010
April - June
4/20/2010
3rd Qtr. 2010
<">July-Sept.
9/13/2010
4th Qtr. 2010
Oct.- Dec.
Parameters Listied in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 1.17 0:72
Nitrate + Nitrite (as N) 10 5 <0.1
Heavy Metals (pg/L)
Arsenic 50 25 <5.0
Beryllium 4 2 . <0.50
Cadmium 5 4.72 1.10
Chromium 100 50 <25
Cobalt 730 75.21 41
Copper 1.300 650 <10
Iron 11.000 14,060 6.200
Lead 15 7.5 <1.0
Manganese 800 5.594.90 5,150
Mercury 2 1 <0.50
Molybdenum 40 20 <10
Nickel 100 94 49
Selenium 50 25 <5.0
Silver 100 50 <10
Thallium 2 1 <0.50
Tin 17.000 8.500 <100
Uranium 30 5.26 2.17
Vanadium 60 30 <15
Zinc 5,000 230 105
Radiologics (pCi/L)
Gross Alpha 15 1 3.33 1 *4.5(+/-0.9) | *2.9 (+/-0.7) |
VOC (pq/L)
Acetone 700 350 <20
Benzene 5 2.5 <1.0
2-Butanone (MEK) 4.000 2.000 , <20
Carbon Tetrachloride 5 2.5 <1.0
Chloroform 70 35 <1.0
Chloromethane 30 15 <1.0
Dichloromethane 5 2.5 <1.0
Naphthalene TOO 50 <1.0
Tetrahydrofuran (THF) 46 23 <1.0
Toluene 1.000 500 <1.0
Xylenes (total) 10.000 5.000 <1.0
Others
Field pH (S.U.) 6.5-8.5 6.4-8.5 6.03 6.33
Fluoride (mg/L) 4 2 0.18
Chloride (mg/L) 35.39 30
Sulfate (hfig/L) 2.556.70 2.390
TDS (mg/L) 3.960 ; .3.750
General lnorganics Listed in Part I.E.I.(c)(2)(ii)
Carbonate (mg/L) <1.0
Bicarbonate (mg/L) 486
Sodium (mg/L) 235
Potassium (mg/L) , 14.4
Magnesium (mg/L) 217
Calcium (mg/L) 514
Total anions (meq/L) 58.6
Total cations (meq/L) 54.1
Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL)
(a) = Quarterly accelerated monitoring event
Page 17
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