DRC-2010-007650 - 0901a0688024ed7c

State of Utah
GARY R. HERBERT
Govemor
GREG BELL
LieutenatJt Govemor
Department of
Environmental Quality
Amanda Smith
Executive Director
DIVISION OF RADIATION CONTROL
Dane L. Finerfrock
Director
MEMORANDUM
TO:
FROM:
DATE:
SUBJECT:
File
Phil Goble, Hydrogeologi
May 20, 2010
Data Evaluation for the 4^" Quarter, 2009 Split Sampling Event in October 2009
(2009 GW Module 60B) at the Denison Mines (USA) Corp. White Mesa Uranium
Mill Near Blanding, Utah
The purpose of this memorandum is to provide a summary regarding review of the DUSA 4**^
Quarter, 2009 Groundwater Report and to provide a review of the 2009 Split Sampling Event
collected between Denison Mines (USA) Corp. (hereafter DUSA) and the Division of Radiation
Control (hereafter DRC) for the 4^^ Quarter, 2009 groundwater monitoring event conducted during
October 12 - 14, 2009 for the DUSA White Mesa Mill facility near Blanding, Utah.
The split sampling review has been conducted per the "August 7, 2007 DRC Split Sampling
Guidance Document at Uranium Mill Operations (hereafter Guidance)." The review was
conducted to ensure facility compliance with the March 17, 2008 DUSA Groundwater Discharge
Permit, Permit No. UG370004 (hereafter Permit) and the November 18, 2008 DUSA Quality
Assurance Plan Revision 4 (hereafter QAP.) Although both the Permit and QAP have been
recently updated, these documents were in force at the time of the 2009 Split Sampling Event.
Field Activities
Division of Radiation Control (DRC) hydrogeologists Phil Goble and Dean Henderson
accompanied the DUSA groundwater sampling crew (Tanner HoUiday) on October 12 - 14, 2009.
The following groundwater monitoring wells were sampled during the 4^^ Quarter, 2009 Split
Sampling Event:
• MW-5
• MW-12
• MW-25
(October 12, 2009)
(October 13, 2009)
(October 13, 2009)
168 North 1950 West • Salt Uke City, UT
Mailing Address: P.O. Box 144850 • Salt Uke City, UT 84114-4850
Telephone [phone] • Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Printed on 100% recycled paper
DRC 2009 Split Sampling Event- White Mesa Mill
Page 2
• MW-26 (October 13, 2009)
• MW-27 (October 12, 2009)
• MW-28 (October 12, 2009)
Each of the monitoring wells sampled during this period has a dedicated sampling pump installed.
DUSA personnel operated the sampling equipment, calculated purge volumes, and measured field
parameters while the well was being purged. DRC samples were submitted to Eberline Analytical
Corporation (radiological) and Lionville Laboratory (non radiological) for analysis.
The DRC collected samples from 5 out of 22 total compliance monitoring wells during this
sampling event, or 22.7% of the monitoring wells. This satisfies the 10% minimum suggested in
the DRC Split Sampling Guidance. Additional samples were collected during the 2009 Split
Sampling Event because only one well (MW-32) was collected for the 2008 Split Sampling Event.
Review of Field Sainpling Methods
The QAP includes specific requirements for field collection of groundwater samples: Review of
observed field procedures against QAP section titles and Parts are listed below:
Documentation Procedures (Field Data Worksheet), QAP Attachment 1- Page 41 and 42:
Field Sheets for the split sample wells are included as Attachment 1 of this memo. The Field
Data Worksheets include the following information:
1. Description of Sampling Event,
2. Location (well name) - Sampler Name and initials,
3. Date and Time for Purging and Sampling if different,
4. Well Purging Equip used: pump or bailer - well pump (if other than Bennet),
5. Sampling Event - Prev. Well Sampling in Sampling Event,
6. pH Buffer 7.0-pH Buffer 4.0,
7. Specific Conductance uMHOS/cm,
8. Well Depth,
9. Depth to Water Before Purging-Casing Volume: 4" Well (.653h), 3" Well (.367h),
10. Conductance (avg) - pH of water (avg),
11. Well Water Temp, (avg) - Redox Potential (Eh) - Turbidity,
12. Weather Condtions - Ext'l Amb. Temp, (prior to sampling event),
13. Measurement of Field Parameters: Conductance, pH, Temperature, Redox Potential,
and Turbidity,
14. Volume of Water Purged When Field Parameters are measured,
15. Pumping Rate Caluation: Flow Rater (Q) in gpm s/60 - Time to excavate two casing
volumes (2V) T = 2V/Q,
16. Number of casing volumes evacuated (if other than two),
17. If well is evacuated to dryness, number of gallons evacuated, and
18. Name of Certified Analytical Laboratory if other than Energy Labs.
Each of the monitoring wells split-sampled had a dedicated sampling pump installed. DUSA
personnel operated the sampling equipment and calculated purge volumes.
DRC 2009 Split Sampling Event - White Mesa Mill
Page 3
Calibration, QAP Section 5.0 - P. 12
Field instruments were calibrated by DUSA staff The instruments were calibrated each day in
the morning at the Mill lab prior to going to the first well site. The DRC confirmed that
calibration reagents were within the expiration date, properly mixed, and that the DUSA personnel
were followed the manufacturers recommendations for instrument calibration.
Field calibration protocols were also reviewed during this inspection. Per DRC review, the
instruments were properly calibrated prior to the day of sampling. It was also noted that the
DUSA personnel provided instrument calibration spot checks against pH standards prior to
sampling each day and that all standards were within reagent expiration dates.
Pre-Purging/Sampling Activities, QAP Section 6.2.6 - Page 18
Well locations were checked for tampering or damage prior to opening. All split sample well
locations were locked as verified by DRC staff and none of the well compartments or casings
were damaged.
Sample bottles, supplied by the respective laboratories, were checked and clean prior to fill. All
purge calculations, instrument calibrations, and paperwork checks were conducted prior to well
pumping.
Well Purging/Measurement of Field Parameters, QAP Section 6.2.7 - Pages 18- 20
DUSA QAP Sections 6.2.7(d)(ii)&(iii) - The DUSA sampler did not calculate a pump flow rate
[in gallons per minute (gpm)] for well MW-27. The DUSA sampler wrote .33 gpm on the Field
Data Worksheet without actually calculating the flow rate. The sampler calculated the time to
pump two casing volumes at 174 minutes (57.41/.33). DUSA pumped for 120 minutes (39.6
gallons) before collecting a sample at MW-27.
The DRC asked the DUSA sampler, where he came up with the .33 gpm flow rate. He said the
setting on the regulator (equipment that controls the air pressure going into bladder pump) was at
ID-55 and that setting equaled a flow rate of .33 gpm. When asked how he knew the setting was
0.33 gpm, he said that was what he was told. The DRC asked the DUSA sampler to verify if the
gpm was truly .33 gpm by filling up a 5-gallon bucket and dividing by five. The 5-gallon bucket
was filled in 23 minutes; therefore, the true gpm at well MW-27 was .217 gpm. Therefore, it
would have taken DUSA 264 minutes (57.41/.217) to pump two casing volumes at well MW-27.
DUSA QAP Section 6.2.7(d)(iv) - It was observed that DUSA pumped for 120 minutes (less than
two casing volumes) in five wells (MW-5, MW-12, MW-25, MW-27, MW-28) before collecting
samples rather than the required two casing volumes. This problem was already pursued under
the April 20, 2010 NOV (Violation No. 5) for the 4''' Quarter, 2009 Report.
Sampling to be taken and order of taking samples, QAP Section 6 2.8 - Page 21
The QAP specifies sampling orders by parameter for collection. Per field review and the
groundwater sample sheet checklists, the parameters were taken in the order specified by the
QAP.
DRC 2009 Split Sampling Event - White Mesa Mill
Page 4
DRC Coordinated Procedures
DRC supplied their own bottles and followed preservation and chain-of-custody labeling and
procedures as specified by Eberline and Lionville Laboratories (the DRC contract labs.) DRC
assisted DUSA in simultaneously filling the sample bottles. The bottles were filled by alternating
DUSA bottles and DRC bottles.
Chain-of-Custody and Analytical Request Record, QAP Section 7.2 - Page 27
All DRC and DUSA samples were sealed and labeled per the individual laboratory procedures.
Neither laboratory flagged the samples for failures in COC procedures.
DATA VALIDATION
Verify That Analysis Was Conducted Within Method Holding Tiines
DRC staff verified that all analyses were performed by the DRC contract laboratories within the
holding times for each parameter for each well sampled. This is documented in the attached
Table 1.
Verify That Reporting Limits Used Were Appropriate
DRC staff verified that the reporting limits used by the DRC contract laboratories for each
parameter was appropriate for each well sampled. This is documented in the attached Table 2.
Verify That Appropriate Analytical methods were used
The Guidance states "/« the case of analytical methods, the DRC will use the same methods found
in the facility's approved QAP to the extent practicable.'''' If the DRC contract laboratory uses an
analytical method that is either specified in Table 1 of the DUSA QAP or is listed on TO7210
Price Form of contract #086096, the analytical method will be considered appropriate. For the
2009 DUSA Split Sampling Event, there were seven instances where the DRC Contract laboratory
used an analytical method that was neither specified in the DUSA QAP or the TO7210 Price Form
of contract #086096. This is documented in the attached Table 3 and is summarized below:
Analyte
Analytical
Methods
Specified in
DUSA QAP
Method
Contract
Eberline Lab
Said They
Would Used In
Contract
#086096
Analytical
Method Used By
Eberline
Laboratory
Correct
Analytical
Method Used?
Ammonia (as N) A4500-NH3 G 4500-NH3D or
6010B
SM 4500-NH3E No
Chloride (mg/l) A4500-C1 B A4500-CI EPA 300.0
(1993)
No
Sulfate (mg/l) A4500-SO4 E 30010 or
SM426C
EPA 300.0
(1993)
No
DRC 2009 Split Sampling Event - White Mesa Mill
Page 5
Sodium (mg/l) E200.7 E200.7 SW 6010B No,
Potassium (mg/l) E200.7 E200.7 SW 6010B . No
Magnesium
(mg/l)
E200.7 E200.7 SW 6010B No
Calcium (mg/l) E200.7 E200.7 SW6010B No
DRC Contract Analytical Laboratory Not Certified by State of Utah to Perform Analysis for
Some Parameters
In the State of Utah, the Bureau of Laboratory Improvement (BLI) certifies Environmental Labs.
After reviewing the BLI database, it appears that the DRC contract laboratories Eberline Services
and Lionville Laboratory performed analysis under methods they are not certified for by the State
of Utah. In Section 1, Page 2, of the Scope of Services of Eberline/Lion vi lie's contract with the
State of Utah, which expires on August 31, 2010, it plainly states: "All analytical work must be
conducted by a Utah-certified laboratory."
and
"Should the laboratory be unable to conduct all of the required analytical methods directly, it will
be the responsibility of the laboratory to subcontract that portion of the contract to a Utah-
certified laboratory that will perform all required analyses in accordance with all contract
requirements."
As the table shows below, the DRC contract laboratories performed analysis for 10 parameters
that they were not certified for by the State of Utah.
Laboratory Parameter
Analytical Method
Certified For
Parameter
Method Performed
by DRC Contract
Laboratory
Eberline Gross Alpha EPA 900.0 EPA 00-02
Lionville' Ammonia (as N) None 4500-NH3E
Lionville Nitrate-1-Nitrate (as N) None EPA 353.2
Lionville Tetrahydrofuran (THF) None 8260B
Lionville pH None 4500-H+B
Lionville Fluoride None SM4500
Lionville Chloride None EPA 300.0 (1993)
Lionville Sulfate None EPA 300.0 (1993)
Lionville Total Dissolved Solids
(TDS)
EPA 160.1 2540 C
Lionville Carbonate/Bicarbonate None 2320B
An e-mail was sent to Ms. Tamara DeMorest of BLI on May 20, 2010 to verify that the DRC
findings were correct. Ms. DeMorest responded the same day and agreed with the DRC that the
' Eberline Laboratory subcontracted this inorganic analysis out to Lionville Laboratories.
DRC;2009 Split Sampling Event - White Mesa Mill
Page 6
DRC contract laboratories performed analysis for some parameters under analytical methods they
were not certified for by the State of Utah.
Attachment A, Item 12 of the Eberline/Lionville contract states:
''TERMINATION: Unless otherwise stated in the Special Terms and Conditions, this contract
may be terminated, with cause by either party, in advance of the specified termination date, upon
written notice being given hy the other party. The party in violation will be given ten (10) working
days afier notification to correct and cease the violations, afier which the contract may be
terminated for cause. This contract may be terminated without cause, in advance of the specified
expiration date, by either party, upon sixty (60) days prior written notice being given the other
party. On termination of this contract, all accounts and payments will be processed according to
the financial arrangements set forth herein for approved services rendered to date of
termination."
DRC staff believes that a DRC contract laboratory that performs analysis for parameters under
methods they are not certified for by the State of Utah is a cause for termination of the contract.
However, because the contract with Eberline/Lionville expires on August 31, 2010 and because
the DRC will be performing more split sampling events in summer 2010, it is recommend that the
contract not be terminated as it will be difficult to find a replacement laboratory that can perform
analysis for all necessary parameters. However, DRC staff believes that Eberline/Lionville should
not be considered an option as a DRC contract laboratory in the future because of the problems
described above.
Verifying That Laboratory Control Samples (e.g., blind duplicates, field blanks, etc;) Were
Within Limits Specified In the QAP
In accordance with the Guidance and Section 3.1 of the DUSA Quality Assurance Plan (hereafter
QAP), comparability of the results reported by the laboratories utilized by the DRC contract
laboratories Eberline Services and Lionville for non-radiologics were determined by calculating
the Relative Percent Difference (RPD) between two split samples using the following equation:
RPD = [|A - B|/{(A + B)/2}] X 100%
Where: A = original sample (MW-28), and
B = duplicate sample (MW-99)
EPA guidelines for analysis of original and duplicate samples, which have been established for
evaluating contract laboratories, include a criterion of 20% RPD (or less) as acceptable. On
October 12, 2009 the DRC collected a duplicate sample for MW-32 and identified it as MW-99.
Based on comparing the sample results for MW-28 and MW-99, the RPD for each parameter was
less than 20% for all parameters except for one (molybdenum). RPD was greater than 20% in
original sample (MW-28, 1.1 pg/L) compared to duplicate sample (MW-99, 0.775 pg/L) for
molybdenum (34.67%), however, both of these DRC results were below the Ground Water
Compliance Limit (hereafter GWCL) for molybdenum (20 pg/L). Given that exceedance of the
GWCL is not in question, repeating the sampling event is not warranted. As a result, no
corrective action is recommended at this time. Molybdenum will be reassessed prior to the 2010
split sampling event to evaluate if a pattern of discrepancies is apparent with these analytes, that
might warrant repeat split sampling or corrective action. r
DRC 2009 Split Sampling Event - White Mesa Mill
Page 7
DRC DATA EVLAUATION
Data Comparison - Non Radiological Parameters
In accordance with the Guidance and Section 3.1 of the DUSA Quality Assurance Plan (hereafter
QAP), comparability of the results reported by the laboratories utilized by DUSA [Energy
Laboratories - Casper (hereafter Energy Labs) and American West Analytical Laboratories
(hereafter AWAL)] for non-radiologics were determined by calculating the RPD between two
split samples using the following equation:
RPD = [|A - B|/{(AB)/2}] X 100%
Where: A = original sample (DUSA), and
B = duplicate sample (DRC)
A summary of the non-radiological parameters results which shows the RPD between the DUSA
result and the corresponding Lionville split sample results are included as Attachment 2. The
Guidance suggests that an RPD of 30% or less is acceptable, with an RPD of greater than 30%
requiring some form of corrective action.
Nine analytes failed the acceptance criteria of 30% RPD as summarized in the table below:
Summary of Split Sampling Data not within 30% RPD Range for Non-Radiologic
Parameters
Well ID Analyte DUSA Result DRC Result RPD% GWCL/GWQS
MW-5 Ammonia (as N) 0.47 mg/L 0.34 mg/L 32.10 6.25 mg/L
MW-12 Uranium 20.8 |L!g/L 43 Mg/L -69.59 15 p g/L
MW-25 Ammonia (as N) 0.49 mg/L 0.3 mg/L 48.1 25 mg/L*
MW-25 Cadmium 1.32 pg/L 1.82 pg/L -31.85 5 pg/L*
MW-26 Ammonia (as N) 0.41 mg/L 0.29 mg/L 34.29 12.5 mg/L
MW-26 Nitrate + Nitrite
(as N)
0.1 mg/L 0.2 mg/L -66.67 5 mg/L
MW-26 Uranium 29.6 Mg/L 54 Mg/L -58.37 15 pg/L
MW-27 Nitrate -i- Nitrite
(asN)
5.2 mg/L 13.4 mg/L -88.17 10 mg/L*
MW-28 Nitrate -I- Nitrite
(as N)
O.lmg/L 0.18 mg/L -57.14 10 mg/L*.:
* = GWCL had not been set at time of sampling for these wells; therefore, the result is compared to the Utah Ground Water
Quality Standard (GWQS).
Further analysis of these nine results that did not satisfy acceptance criteria indicates that three of
the results reported by both DUSA and the DRC exceed a GWCL (see bold text above). This is
not unexpected given that the wells with parameters above the GWCL are already in accelerated
status with these parameters (Uranium in wells MW-12 and MW-26 and Nitrate + Nitrite as N in
well MW-27). Holding times have expired, so reanalysis of the October, 2009 samples is not a
possibility. The next recommendation in the Guidance is to repeat the split sampling in each well
that has a discrepancy. In this instance, five of the six wells would require re-sampling for at least
one analyte, essentially creating a repeat of the sampling event. Given that a GWCL exceedance
is not in question for 6 of the analytes listed, and that the three remaining wells are already in
DRC 2009 SpHt Sampling Event - White Mesa Mill
Page 8
accelerated status, repeating the sampling event is not warranted. As a result, no corrective action
is recommended at this time. These nine analytes (and 8 wells) will be reassessed prior to the the
2010 split sampling event to determine if a pattern of discrepancies is apparent with these
analytes, that might warrant repeat split sampling or other corrective action.
Data Comparison - Vanadium
Vanadium was observed in each well in the DRC results of the 2009 Split Sampling Event.
Conversely, DUSA results showed vanadium as non-detect for the same wells, as shown on the
table below:
Well Analyte GWCL/GWQS DUSA
Result
DUSA
Analytical
Method
DRC
Result
DRC
Analytical
Method
MW-5 Vanadium 15 pg/L <15 E200.8 23.7 Mg/L SW 6010B
MW-12 Vanadium 30 pg/L <15 E200.8 37.8 Mg/L SW6010B
MW-25 Vanadium 60 pg/L* <15 E200.8 36.5 pg/L SW 6010B
MW-26 Vanadium 30 pg/L <15 E200.8 35.1 Mg/L SW6010B
MW-27 Vanadium 60 pg/L* <15 E200.8 38.1 pg/L SW6010B
MW-28 Vanadium 60 pg/L* <15 E200.8 43.5 pg/L SW 6010B
* = GWCL had not been set at time of sampling for these welis; therefore.
Quality Standard (GWQS).
the result is compared to the Utah Ground Water
A possible explanation could be that because each laboratory used a different analytical method
[e.g. DUSA (E200.8) vs. DRC (SW 6010B)], they got different results. If the DRC results are
true, DUSA would be in potentially out of compliance (POOC) status in wells MW-5, MW-12,
and MW-26 and would need to begin accelerated sampling. The recommendation in the Guidance
is to repeat the split sampling in each well that has a discrepancy. In this instance, all six wells
would require re-sampling for at least one analyte. Under this scenario, the next split-sampling
event would be a duplication of the split-sampling event described in this memorandum. .
Data Comparison - Radiological Parameters
Comparability of results betNveen the DUSA and DRC split sample results for radiologic
contaminants was evaluated using the reported values and the range of their respective error terms
as follows:
Bounds of the 95% confidence limit: Lower Bound Upper Bound
DUSA Sample Result = Sl-Tl to Sl -HTI
DRC Split Sample Result = S2-T2 to S2 + T2
Where:
51 = original sample result (DUSA), and
52 = duplicate sample result (DRC)
Tl = reported error term of DUSA sample
T2 = reported error term of DRC sample
DRC 2009 Split Sampling Event - White Mesa Mill
Page 9
Per the Guidance, the lower and upper bounds for the 95% confidence level are to be calculated
for each radiological parameter by the analytical lab, i.e., error term. Attachment 3 is a summary
table of the radiological results and shows the lower bound (LB) and upper bound (UB) for each
of the DUSA results and the cori-esponding Eberline split sample results. In addition to the LB
and UB, the coefficient of variance (CV) has been calculated for each sample result and is also
presented in Attachment 3. A summary of the results presented in Attachment 3 are shown
below:
Summary of Data Overlap Evaluation for Radiologic Parameters by Well
Well Analyte Overlapping
Data?
Higher Result
DRC or DUSA
Coefficient of
Variance % Well Analyte Overlapping
Data?
Higher Result
DRC or DUSA DUSA DRC
MW-5* Gross Alpha -DRC -138.6%
MW-12* Gross Alpha -DRC -76.7%
MW-25* Gross Alpha -DRC -67.7%
MW-26 Gross Alpha N DRC .29.4% 59.7%
MW-27* Gross Alpha -DRC -16.8%
MW-28 Gross Alpha Y DRC 47.4% 108.3%
* = Non-detect, therefore data overlap and coefficient of variance was not calculated for that particular parameter.
As shown by the above table, only one of six samples exhibit 100% correlation between the
results reported by DUSA and the DRC split sample gross alpha results. Since the ideal scenario
of 100% correlation between the laboratory utilized by DUSA and that used by the DRC was riot
achieved, further analysis of the results is necessary. Several additional criteria can be used to
evaluate the data, including whether a GWCL was exceeded in the samples analyzed by either
laboratory, which laboratory is reporting the highest result (higher result being more conservative
or protective of the environment) and which laboratory is reporting the smallest coefficient of
variance (smaller coefficient of variance is an indicator of better data quality).
Without exception, the results reported by the DUSA laboratory exhibit a coefficient of variance
below 100% more often than the DRC laboratory, suggesting better data quality in the DUSA
results. However, in every case the results reported by the laboratory utilized by the DRC
reported a higher (more conservative) result than those reported by DUSA.
The Guidance suggests that if the reported concentration ranges (LB to UB) from each laboratory
have an overlap, the results are considered comparable and no further evaluation is necessary. If
the reported concentration ranges from each laboratory do not overlap then corrective action is
required.
Per DRC review of the non-overlapping data for Gross Alpha and as per the table above, it
appears that the DRC data is likely non-conforming due to insufficient count time. DRC has been
working with the lab regarding these non-conforming data and will continue to request longer
count times.
DRC 2009 Split Sampling Event- White Mesa Mill
Page 10
Conclusions and Recommendations
Despite the lack of perfect correlation between the results reported by DUSA and the State, the
split samples collected during October 2009 were successful in determining compliance with the
Permit. Comparing data reported by DUSA with that reported by the State does not suggest an
attempt by DUSA to under-report or otherwise provide unreliable data. Since the discrepancies ,
are analyte-specific rather than sample-specific, it is not likely that sample collection, storage, or
preservation methods are causes for concem since those would tend to affect the entire sample.
Differences between sample results are more likely attributable to chemistry (i.e., variations due
to laboratory methods and procedures), and do not suggest compliance problems with the facility.
With respect to data quality, based on an evaluation of the values, the DUSA laboratory data are
of higher quality. This is not unexpected given the large volume of samples submitted annually to
the laboratory by DUSA. As a result, their laboratory is experienced in dealing with challenges
the high TDS groundwater can create with certain analytical methods. In addition, their
laboratory is eager to satisfy a valuable client when issues requiring further attention do arise. On
the other hand, the laboratory utilized by the DRC only receives approximately 10 samples per
year from the uranium mill which does not give them consistent experience with the high TDS
groundwater.
The DRC contract laboratories Eberline Services and Lionville Laboratory performed analysis
under methods they are not certified for by the State of Utah. DRC staff believes that a DRC
contract laboratory that performs analysis for parameters under methods they are not certified for
by the State of Utah is a cause for termination of the contract. However, because the contract with
Eberline/Lionville expires on August 31, 2010 and because the DRC will be performing more
split sampling events in summer 2010, it is recommend that the contract not be terminated as it
will be difficult to find a replacement laboratory that can perform analysis for all necessary
parameters. However, DRC staff believes that Eberline/Lionville should not be considered an
option as a DRC contract laboratory in the future because of the problems described above.
Recommendations For Improving Future Split Sampling Events
The Guidance recommendation of re-sampling each well that has an unresolved discrepancy for a
given analyte would result in re-sampling of each of the 10 monitoring wells for one or more
parameters. Under this scenario, the next split-sampling event would be a duplication of the split-
sampling event described in this memorandum. This is not practical, not necessary, and not the
intent of the split sampling program, which has been designed to sample each well over a 10 year
period.
However, the DRC has identified the following areas where improvements can be made during
future split sampling events to improve on the quality of the data obtained:
• Review the laboratory data as soon as possible, so if there are data quality issues there is
an opportunity to re-analyze samples before holding times expire. Some of the data
quality issues identified in this memorandum may have been corrected if the data had been
reviewed prior to the expiration.
DRC 2009 Split Sampling Event - White Mesa Mill
Page 11
References
Denison Mines (USA) Corp., November 18, 2008, Revision 4, White Mesa Uranium Mill Ground
Water Monitoring Quality Assurance Plan.
Denison Mines (USA) Corp., February 28, 2009, White Mesa Uranium Mill Groundwater
Monitoring Report 4^*^ Quarter, 2009 (October through December).
Eberline Analytical Services, November 18, 2009, Analyses Data Package
Lionville Laboratory, November 12, 2009, Analyses Data Package
Utah Division of Radiation Control, August 7, 2007, "Utah Department of Environmental Quality
Division of Radiation Control Guidance for Groundwater Split Sample Collection at Uranium
Mill Operations."
Utah Division of Radiation Control, September 17, 2007, State of Utah Contract with Eberline
Analytical Services, Contract # 086096
Utah Division of Radiation Control, March 23, 2010, "Review of the 4th Quarter, 2009 (dated
February 28, 2010) Routine Groundwater Monitoring Report Groundwater Discharge Permit
(Permit) UG370004 Denison Mines (USA) Corp. (DUSA) White Mesa Mill, Blanding, Utah.
Utah Division of Water Quality, March 17, 2008, Ground Water Discharge Permit, Denison
Mines (USA) Corp, Permit No. UGW370004.
DRC 2009 Split Sampling Event - White Mesa Mill
Page 12
ATTACHMENT!
Field Data Worksheets October 12 - 13, 2009:
Wells: MW-5, MW-12, MW-25, MW-26, MW-27, and MW-28
DRC 2009 Split Sampling Event - White Mesa Mill
Page 13
ATTACHIMENT 2
2009 Split Sample Results for:
Wells: MW-5, MW-12, MW-25, MW-26, MW-27, and MW-28
October 12- 13,2009
Table 1 - Sample Holding Time
2009 DUSA Split Sampling Event
Analyte Analytical Method Holding Time Sample Date
MW-5
Date Analyzed
MW-5
Analyzed Within
Required
Holding Time?
Ammonia (as N) SM 4500-NH3E 28 days 10/12/2009 10/19/2009 Yes
Nitrate + Nitrite (as N) EPA 353.2 28 days 10/12/2009 10/23/2009 Yes
Arsenic SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Beryllium SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Cadmium SW6010B 6 months 10/12/2009 10/26/2009 Yes
Chromium SW 60IOB 6 months 10/12/2009 10/26/2009 Yes
Cobalt SW 601 OB • 6 months 10/12/2009 10/26/2009 Yes
Copper SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Iron SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Lead SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Manganese SW6010B 6 months 10/12/2009 10/26/2009 Yes
Mercury SW-846 7470A 28 days 10/12/2009 10/21/2009 Yes
Molybdenum SW6010B 6 months 10/12/2009 10/26/2009 Yes
Nickel SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Selenium SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Silver SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Thallium SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Tin SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Uranium SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Vanadium SW6010B 6 months 10/12/2009 10/26/2009 Yes
Zinc SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Gross Alpha EPA 00-02 6 months 10/12/2009 , 11/12/2009 Yes
Acetone SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Benzene SW 8260B 14 days 10/12/2009 10/22/2009 Yes
2-Butanone (MEK) SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Carbon Tetrachloride SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Chloroform SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Chloromethane SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Dichloromethane SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Naphthalene SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Tetrahydrofuran (THF) SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Toluene SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Xylenes(total) SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Field pH (S.U.) SM 4500-H+B Immediate 10/12/2009 10/19/2009 Yes
Fluoride (mg/l) SM 4500 28 days 10/12/2009 10/19/2009 Yes
Chloride (mg/l) EPA 300.0(1993) 28 days 10/12/2009 10/22/2009 Yes
Sulfate (mg/l) EPA 300.0 (1993) 28 days 10/12/2009 10/22/2009 Yes
TDS (mg/l) SM2540C 7 days 10/12/2009 10/16/2009 Yes
Carbonate (mg/l) SM 2320B 14 days 10/12/2009 10/22/2009 Yes
Bicarbonate (mg/l) SM 2320B 14 days 10/12/2009 10/22/2009 Yes
Sodium (mg/l) SW6010B 6 months 10/12/2009 10/26/2009 Yes
Potassium (mg/l) SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Magnesium (mg/l) SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Calcium (mg/l) SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Table 1 - Sample Holding Time
2009 DUSA Split Sampling Event
Analyte Analytical Method Holding Time Sample Date
MW-12
Date Analyzed
MW-12
Analyzed Within
Required
Holding Time?
Ammonia (as N) SM 4500-NH3E 28 days 10/13/2009 10/19/2009 Yes
Nitrate + Nitrite (as N) EPA 353.2 28 days 10/13/2009 10/23/2009 Yes
Arsenic SW6010B 6 months 10/13/2009 10/26/2009 Yes
Beryllium SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Cadmium SW 60IOB 6 months 10/13/2009 10/26/2009 Yes
Chromium SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Cobalt SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Copper SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Iron SW 6010B 6 months 10/13/2009 10/26/2009 Yes
Lead SW 6010B 6 months 10/13/2009 10/26/2009 Yes
Manganese SW 6010B 6 months 10/13/2009 10/26/2009 Yes
Mercury SW-846 7470A 28 days 10/13/2009 10/21/2009 Yes
Molybdenum SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Nickel SW6010B 6 months 10/13/2009 10/26/2009 Yes
Selenium SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Silver SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Thallium SW 6010B 6 months 10/13/2009 10/26/2009 Yes
Tin SW 6010B 6 months 10/13/2009 10/26/2009 Yes
Uranium SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Vanadium SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Zinc SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Gross Alpha EPA 00-02 6 months 10/13/2009 11/12/2009 Yes
Acetone SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Benzene SW 8260B 14 days 10/13/2009 10/22/2009 Yes
2-Butanone (MEK) SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Carbon Tetrachloride SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Chloroform SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Chloromethane SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Dichloromethane SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Naphthalene SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Tetrahydrofuran (THF) SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Toluene SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Xylenes(total) SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Field pH (S.U.) SM 4500-H+B Immediate 10/13/2009 10/19/2009 Yes
Fluoride (mg/l) SM 4500 28 days 10/13/2009 10/19/2009 Yes
Chloride (mg/l) EPA 300.0 (1993) 28 days 10/13/2009 10/22/2009 Yes
Sulfate (mg/l) EPA 300.0(1993) 28 days 10/13/2009 10/22/2009 Yes
TDS (mg/l) SM2540C 7 days 10/13/2009 10/16/2009 Yes
Carbonate (mg/l) SM2320B 14 days 10/13/2009 10/22/2009 Yes
Bicarbonate (mg/l) SM 2320B 14 days 10/13/2009 10/22/2009 Yes
Sodium (mg/l) SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Potassium (mg/l) SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Magnesium (mg/l) SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Calcium (mg/l) SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Table 1 - Sample Holding Time
2009 DUSA Split Sampling Event
Analyte Analytical Method Holding Time Sample Date
MW-25
Date Analyzed
MW-25
Analyzed Within
Required
Holding Time?
Ammonia (as N) SM 4500-NH3E 28 days 10/13/2009 10/19/2009 Yes
Nitrate + Nitrite (as N) EPA 353.2 28 days 10/13/2009 10/23/2009 Yes
Arsenic SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Beryllium SW 6010B 6 months 10/13/2009 10/26/2009 Yes
Cadmium SW 6010B 6 months 10/13/2009 10/26/2009 Yes
Chromium SW 60IOB 6 months 10/13/2009 10/26/2009 Yes
Cobalt SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Copper SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Iron SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Lead SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Manganese SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Mercury SW-846 7470A 28 days 10/13/2009 10/21/2009 Yes
Molybdenum SW 6010B 6 months 10/13/2009 10/26/2009 Yes
Nickel SW 6010B 6 months 10/13/2009 10/26/2009 Yes
Selenium SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Silver SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Thallium SW 60IOB 6 months 10/13/2009 10/26/2009 Yes
Tin SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Uranium SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Vanadium SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Zinc SW 6010B 6 months 10/13/2009 10/26/2009 Yes
Gross Alpha EPA 00-02 6 months 10/13/2009 11/12/2009 Yes
Acetone SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Benzene SW 8260B 14 days 10/13/2009 10/22/2009 Yes
2-Butanone (MEK) SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Carbon Tetrachloride SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Chloroform SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Chloromethane SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Dichloromethane SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Naphthalene SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Tetrahydrofuran (THF) SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Toluene SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Xylenes(total) SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Field pH (S.U.) SM 4500-H+B •Immediate 10/13/2009 10/19/2009 Yes
Fluoride (mg/l) SM 4500 28 days 10/13/2009 10/19/2009 Yes
Chloride (mg/l) EPA 300.0 (1993) 28 days 10/13/2009 10/22/2009 Yes
Sulfate (mg/i) EPA 300.0(1993) 28 days 10/13/2009 10/22/2009 Yes
TDS (mg/l) SM2540C 7 days 10/13/2009 10/16/2009 Yes
Carbonate (mg/l) SM 2320B 14 days 10/13/2009 10/22/2009 Yes
Bicarbonate (mg/l) SM 2320B 14 days 10/13/2009 10/22/2009 Yes
Sodium (mg/l) SW6010B 6 months 10/13/2009 10/26/2009 Yes
Potassium (mg/l) SW 60IOB 6 months 10/13/2009 10/26/2009 Yes
Magnesium (mg/l) SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Calcium (mg/l) SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Table 1 - Sample Holding Time
2009 DUSA Split Sampling Event
Analyte Analytical Method Holding Time Sample Date
MW-26
Date Analyzed
MW-26
Analyzed Within
Required
Holding Time?
Ammonia (as N) SM 4500-NH3E 28 days 10/13/2009 10/19/2009 Yes
Nitrate + Nitrite (as N) EPA 353.2 28 days 10/13/2009 10/23/2009 Yes
Arsenic SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Beryllium SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Cadmium SW 60IOB 6 months 10/13/2009 10/26/2009 Yes
Chromium SW 6010B 6 months 10/13/2009 10/26/2009 Yes
Cobalt SW 6010B 6 months 10/13/2009 10/26/2009 Yes
Copper SW 60IOB 6 months 10/13/2009 10/26/2009 Yes
Iron SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Lead SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Manganese SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Mercury SW-846 7470A 28 days 10/13/2009 10/21/2009 Yes
Molybdenum SW 60IOB 6 months 10/13/2009 10/26/2009 Yes
Nickel SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Selenium SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Silver SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Thallium SW 6010B 6 months 10/13/2009 10/26/2009 Yes
Tin SW 6010B 6 months 10/13/2009 10/26/2009 Yes
Uranium SW 6010B 6 months 10/13/2009 10/26/2009 Yes
Vanadium SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Zinc SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Gross Alpha EPA 00-02 6 months 10/13/2009 11/12/2009 Yes
Acetone SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Benzene SW 8260B 14 days 10/13/2009 10/22/2009 Yes
2-Butanone (MEK) SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Carbon Tetrachloride SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Chloroform SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Chloromethane SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Dichloromethane SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Naphthalene SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Tetrahydrofuran (THF) SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Toluene SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Xylenes(total) SW 8260B 14 days 10/13/2009 10/22/2009 Yes
Field pH (S.U.) SM 4500-H+B Immediate 10/13/2009 10/19/2009 Yes
Fluoride (mg/l) SM 4500 28 days 10/13/2009 10/19/2009 Yes
Chloride (mg/l) EPA 300.0 (1993) 28 days 10/13/2009 10/22/2009 Yes
Sulfate (mg/l) EPA 300.0(1993) 28 days 10/13/2009 10/22/2009 Yes
TDS (mg/l) SM2540C 7 days 10/13/2009 10/16/2009 Yes
Carbonate (mg/l) SM 2320B 14 days 10/13/2009 10/22/2009 Yes
Bicarbonate (mg/l) SM 2320B 14 days 10/13/2009 10/22/2009 Yes
Sodium (mg/l) SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Potassium (mg/l) SW 601 OB 6 months 10/13/2009 10/26/2009 Yes
Magnesium (mg/l) SW 6010B 6 months 10/13/2009 10/26/2009 Yes
Calcium (mg/l) SW 6010B 6 months 10/13/2009 10/26/2009 Yes
Table 1 - Sample Holding Time
2009 DUSA Split Sampling Event
Analyte Analytical Method Holding Time Sample Date
MW-27
Date Analyzed
MW-27
Analyzed Within
Required
Holding Time?
Ammonia (as N) SM 4500-NH3E 28 days 10/12/2009 10/19/2009 Yes
Nitrate + Nitrite (as N) EPA 353.2 28 days 10/12/2009 10/23/2009 Yes
Arsenic SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Beryllium SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Cadmium SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Chromium SW6010B 6 months 10/12/2009 10/26/2009 Yes
Cobalt SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Copper SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Iron SW 60IOB 6 months 10/12/2009 10/26/2009 Yes
Lead SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Manganese SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Mercury SW-846 7470A 28 days 10/12/2009 10/21/2009 Yes
Molybdenum SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Nickel SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Selenium SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Silver SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Thallium SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Tin SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Uranium SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Vanadium SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Zinc SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Gross Alpha EPA 00-02 6 months 10/12/2009 11/12/2009 Yes
Acetone SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Benzene SW 8260B 14 days 10/12/2009 10/22/2009 Yes
2-Butanone (MEK) SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Carbon Tetrachloride SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Chloroform SW8260B 14 days 10/12/2009 10/22/2009 Yes
Chloromethane SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Dichloromethane SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Naphthalene SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Tetrahydrofuran (THF) SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Toluene SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Xylenes(total) SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Field pH (S.U.) SM 4500-H+B Immediate 10/12/2009 10/19/2009 Yes
Fluoride (mg/l) SM 4500 28 days 10/12/2009 10/19/2009 Yes
Chloride (mg/l) EPA 300.0 (1993) 28 days 10/12/2009 10/22/2009 Yes
Sulfate (mg/l) EPA 300.0(1993) 28 days 10/12/2009 10/22/2009 Yes
TDS (mg/l) SM2540C 7 days 10/12/2009 10/16/2009 Yes
Carbonate (mg/l) SM 2320B 14 days 10/12/2009 10/22/2009 Yes
Bicarbonate (mg/l) SM 2320B 14 days 10/12/2009 10/22/2009 Yes
Sodium (mg/l) SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Potassium (mg/l) SW6010B 6 months 10/12/2009 10/26/2009 Yes
Magnesium (mg/l) SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Calcium (mg/l) SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Table 1 - Sample Holding Time
2009 DUSA Split Sampling Event
Analyte Analytical Method Holding Time Sample Date
MW-28
Date Analyzed
MW-28
Analyzed Within
Required
Holding Time?
Ammonia (as N) SM4500-NH3E 28 days 10/12/2009 10/19/2009 Yes
Nitrate + Nitrite (as N) EPA 353.2 28 days 10/12/2009 10/23/2009 Yes
Arsenic SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Beryllium SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Cadmium SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Chromium SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Cobalt SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Copper SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Iron SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Lead SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Manganese SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Mercury SW-846 7470A 28 days 10/12/2009 10/21/2009 Yes
Molybdenum SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Nickel SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Selenium SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Silver SW 60IOB 6 months 10/12/2009 10/26/2009 Yes
Thallium SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Tin SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Uranium SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Vanadium SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Zinc SW6010B 6 months 10/12/2009 10/26/2009 Yes
Gross Alpha EPA 00-02 6 months 10/12/2009 11/12/2009 Yes
Acetone SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Benzene SW 8260B 14 days 10/12/2009 10/22/2009 Yes
2-Butanone (MEK) SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Carbon Tetrachloride SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Chloroform SW8260B 14 days 10/12/2009 10/22/2009 Yes
Chloromethane SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Dichloromethane SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Naphthalene SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Tetrahydrofuran (THF) SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Toluene SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Xylenes(total) SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Field pH (S.U.) SM 4500-H+B Immediate 10/12/2009 10/19/2009 Yes
Fluoride (mg/l) SM4500 28 days 10/12/2009 10/19/2009 Yes
Chloride (mg/l) EPA 300.0(1993) 28 days 10/12/2009 10/22/2009 Yes
Sulfate (mg/l) EPA 300.0(1993) 28 days 10/12/2009 10/22/2009 Yes
TDS (mg/l) SM2540C 7 days 10/12/2009 10/16/2009 Yes
Carbonate (mg/l) SM 2320B 14 days 10/12/2009 10/22/2009 Yes
Bicarbonate (mg/l) SM 2320B 14 days 10/12/2009 10/22/2009 Yes
Sodium (mg/l) SW6010B 6 months 10/12/2009 10/26/2009 Yes
Potassium (mg/l) SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Magnesium (mg/l) SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Calcium (mg/l) SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Table 1 - Sample Holding Time
2009 DUSA Split Sampling Event
Analyte Analytical Method Holding Time Sample Date
MW-99
Date Analyzed
MW-99
Analyzed Within
Required
Holding Time?
Ammonia (as N) SM 4500-NH3E 28 days 10/12/2009 10/19/2009 Yes
Nitrate + Nitrite (as N) EPA 353.2 28 days 10/12/2009 10/23/2009 Yes
Arsenic SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Beryllium SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Cadmium SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Chromium SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Cobalt SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Copper SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Iron SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Lead SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Manganese SW 601 OB 6 months 10/12/2009 10/26/2009 . Yes
Mercury SW-846 7470A 28 days 10/12/2009 10/21/2009 Yes
Molybdenum SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Nickel SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Selenium SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Silver SW 6010B 6 months 10/12/2009 10/26/2009 Yes
Thallium SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Tin SW6010B 6 months 10/12/2009 10/26/2009 Yes
Uranium SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Vanadium SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Zinc SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Gross Alpha EPA 00-02 6 months 10/12/2009 11/12/2009 Yes
Acetone SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Benzene SW 8260B 14 days 10/12/2009 10/22/2009 Yes
2-Butanone (MEK) SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Carbon Tetrachloride SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Chloroform SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Chloromethane SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Dichloromethane SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Naphthalene SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Tetrahydrofuran (THF) SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Toluene SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Xylenes(total) SW 8260B 14 days 10/12/2009 10/22/2009 Yes
Field pH (S.U.) SM 4500-H+B Immediate 10/12/2009 10/19/2009 Yes
Fluoride (mg/l) SM 4500 28 days 10/12/2009 10/19/2009 Yes
Chloride (mg/l) EPA 300.0 (1993) 28 days 10/12/2009 10/22/2009 Yes
Sulfate (mg/l) EPA 300.0 (1993) 28 days 10/12/2009 10/22/2009 Yes
TDS (mg/l) SM2540C 7 days 10/12/2009 10/16/2009 Yes
Carbonate (mg/l) SM 2320B 14 days 10/12/2009 10/22/2009 Yes
Bicarbonate (mg/l) SM 2320B 14 days 10/12/2009 10/22/2009 Yes
Sodium (mg/l) SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Potassium (mg/l) SW6010B 6 months 10/12/2009 10/26/2009 Yes
Magnesium (mg/l) SW 601 OB 6 months 10/12/2009 10/26/2009 Yes
Calcium (mg/l) SW6010B 6 months 10/12/2009 10/26/2009 Yes
Table 2 - Reporting Limits
2009 DUSA Split Sampling Event
Analyte
MW-5
GWCL
(Class II)
DUSA QAP
Reporting Limit
Reporting
Limit Used by
DRC Lab
Reporting
Limit
Appropriate?
Nutrients (mg/L)
Ammonia (as N) 6.25 0.05 mg/L 0.1 mg/L Yes
Nitrate + Nitrite (as N) 2.5 0.1 mg/L 0.2 mg/L Yes
Heavy Metals (iJg/L)
Arsenic 12.5 5 Mg/L 15 pg/L Yes^
Beryllium 1 0.50 |jg/L 1.5 pg/L Yes^
Cadmium 1.25 0.50 pg/L 1.5 pg/L Yes^
Chromium 25 25 jjg/L 15 pg/L Yes
Cobalt 182.5 10 pg/L 15 pg/L Yes
Copper 325 10 pg/L 15 pg/L Yes
Iron 2.750 30 pg/L 75 pg/L Yes
Lead 3.75 1.0 pg/L 3.0 pg/L Yes
Manganese 200 10 pg/L 15 pg/L Yes
Mercury 0.5 0.50 pg/L 0.20 pg/L Yes
Molybdenum 10 10 pg/L 15 pg/L Yes^
Nickel 25 20 pg/L 15 pg/L Yes
Selenium 12.5 5 pg/L 15 pg/L Yes^
Silver 25 10 pg/L 15 pg/L Yes
Thallium 0.5 0.50 pg/L 1.5 pg/L Yes^
Tin <250 100 pg/L 75 pg/L Yes
Uranium 7.5 0.30 pg/L 30 pg/L Yes^
Vanadium 15 15 pg/L 15 pg/L Yes
Zinc 1,250 10 pg/L 30 pg/L Yes
Radiologics (pCi/L)
Gross Alpha 3.75 1.0 pCi/L
VOC (UQ/L)
Acetone 175 20 pg/L 5 pg/L Yes
Benzene 1.25 1.0 pg/L 1.0 pg/L Yes
2-Butanone (MEK) 1000 20 pg/L 5 pg/L Yes
Carbon Tetrachloride 1.25 1.0 pg/L 1.0 pg/L Yes
Chloroform 17.5 1.0 pg/L 1.0 pg/L Yes
Chloromethane 7.5 1.0 pg/L 1.0 pg/L Yes
Dichloromethane 1.25 1.0 pg/L 1.0 pg/L Yes
Naphthalene 25 1.0 pg/L 1.0 pg/L Yes
Tetrahydrofuran (THF) 11.5 1.0 pg/L 1.0 pg/L Yes
Toluene 250 1.0 pg/L 1.0 pg/L Yes
Xylenes(total) 2500 1.0 pg/L 1.0 pg/L Yes
Others
Field pH (S.U.) 0.01 s.u. 0.10 pH units Yes^
Fluoride (mg/l) 1 0.1 mg/L 0.1 mg/L Yes
Chloride (mg/l) 1 mg/L 2.5 mg/L Yes^
Sulfate (mg/l) 1 mg/L 125 mg/L Yes^
TDS (mg/l) 10 mg/L 10 mg/L Yes
General Inorganics
Carbonate (mg/l) 1 mg/L 2 mg/L Yes^
Bicarbonate (mg/l) 1 mg/L 2 mg/L Yes^
Sodium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Potassium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Magnesium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Calcium (mg/l) 0.50 m^/L 0.75 mg/L Yes^
Yes^ = The RL used by the
Yes^ = The RL used by the
there is no Utah GWQS for
DRC contract lab is above the DUSA GWCL but is below the Utah GWQS.
DRC contract lab is above the DUSA RL specified in Table 2 of the DUSA QAP; however,
this parameter, therefore the RL used is appropriate.
Table 2 - Reporting Limits
2009 DUSA Split Sampling Event
Analyte
MW-12
GWCL
(Class III)
DUSA QAP
Reporting Limit
Reporting
Limit Used by
DRC Lab
Reporting
Limit
Appropriate?
Nutrients (mg/L)
Ammonia (as N) 12.5 0.05 mg/L 0.1 mg/L Yes
Nitrate + Nitrite (as N) 5 0.1 mg/L 0.2 mg/L Yes
Heavy Metals (jjg/L)
Arsenic 25 5 pg/L 15 pg/L Yes^
Beryllium 2 0.50 pg/L 1.5 pg/L Yes
Cadmium 2.5 0.50 pg/L 1.5 pg/L Yes
Chromium 50 25 pg/L 15 pg/L Yes
Cobalt 365 10 pg/L 15 pg/L Yes
Copper 650 10 pg/L 15 pg/L Yes
Iron 5,500 30 pg/L 75 pg/L Yes
Lead 7.5' 1.0 pg/L 3.0 pg/L Yes
Manganese 400 10 pg/L 15 pg/L Yes
Mercury 1 0.50 pg/L 0.20 pg/L Yes
Molybdenum 20 10 pg/L 15 pg/L Yes
Nickel 50 20 pg/L 15 pg/L Yes
Selenium 25 5 pg/L 15 pg/L Yes
Silver 50 10 pg/L 15 pg/L Yes
Thallium 1 0.50 pg/L 1.5 pg/L Yes^
Tin 8,500 100 pg/L 75 pg/L Yes
Uranium 15 0.30 pg/L 30 pg/L Yes^
Vanadium 30 15 pg/L 15 pg/L Yes
Zinc 2,500 10 pg/L 30 pg/L Yes
Radiologics (pCi/L)
Gross Alpha 7.5 1.0 pCi/L
VOC (ug/L)
Acetone 350 20 pg/L 5 pg/L Yes
Benzene 2.5 1.0 pg/L 1.0 pg/L Yes
2-Butanone (MEK) 2000 20 pg/L 5 pg/L Yes
Carbon Tetrachloride 2.5 1.0 pg/L 1.0 pg/L Yes
Chloroform 35 1.0 pg/L 1.0 pg/L Yes
Chloromethane 15 1.0 pg/L 1.0 pg/L Yes
Dichloromethane 2.5 1.0 pg/L 1.0 pg/L Yes
Naphthalene 50 1.0 pg/L 1.0 pg/L Yes
Tetrahydrofuran (THF) 23 1.0 pg/L 1.0 pg/L Yes
Toluene 500 1.0 pg/L 1.0 pg/L Yes
Xy!enes(total) 5000 1.0 pg/L 1.0 pg/L Yes
Others
Field pH (S.U.) 0.01 s.u. 0.10 pH units Yes^
Fluoride (mg/l) 2 0.1 mg/L 0.1 mg/L Yes
Chloride (mg/l) 1 mg/L 2.5 mg/L Yes^
Sulfate (mg/l) 1 mg/L 125 mg/L Yes^
TDS (mg/l) 10 mg/L 10 mg/L Yes
General Inorganics
Carbonate (mg/l) 1 mg/L 2 mg/L Yes^
Bicarbonate (mg/l) 1 mg/L 2 mg/L Yes^
Sodium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Potassium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Magnesium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Calcium (mg/l) 0.50 mg/L 0.75 mg/L Yes"^
Yes^ = The RL used by the
Yes^ = The RL used by the
there is no Utah GWQS for
DRC contract lab is above the DUSA GWCL but is below the Utah GWQS.
DRC contract lab is above the DUSA RL specified in Table 2 of the DUSA QAP; however,
this parameter, therefore the RL used is appropriate.
Table 2 - Reporting Limits
2009 DUSA Split Sampling Event
Analyte
MW-25
GWCL
(Class III)
DUSA QAP
Reporting Limit
Reporting
Limit Used by
DRC Lab
Reporting
Limit
Appropriate?
Nutrients (mg/L)
Ammonia (as N) 12.5 0.05 mg/L 0.1 mg/L Yes
Nitrate + Nitrite (as N) 5 0.1 mg/L 0.2 mg/L Yes
Heavy Metals (jjg/L)
Arsenic 25 5 pg/L 15 pg/L Yes^
Beryllium 2 0.50 pg/L 1.5 pg/L Yes
Cadmium 2.5 0.50 pg/L 1.5 pg/L Yes
Chromium 50 25 pg/L 15 pg/L Yes
Cobalt 365 10 pg/L 15 pg/L Yes
Copper 650 10 pg/L 15 pg/L Yes
Iron 5,500 30 pg/L 75 pg/L Yes
Lead 7.5 1.0 pg/L 3.0 pg/L Yes
Manganese 400 10 pg/L 15 pg/L Yes
Mercury 1 0.50 pg/L 0.20 pg/L Yes
Molybdenum 20 10 pg/L 15 pg/L Yes
Nickel 50 20 pg/L 15 pg/L Yes
Selenium 25 5 pg/L 15 pg/L Yes
Silver 50 10 pg/L 15 pg/L Yes
Thallium 1 0.50 pg/L 1.5 pg/L Yes^
Tin 8,500 100 pg/L 75 pg/L Yes
Uranium 15 0.30 pg/L 30 pg/L Yes^
Vanadium 30 15 pg/L 15 pg/L Yes
Zinc 2,500 10 pg/L 30 pg/L Yes
Radiologics (pCi/L)
Gross Alpha 7.5 I.OpCi/L
VOC (ug/L)
Acetone 350 20 pg/L 5 pg/L Yes
Benzene 2.5 1.0 pg/L 1.0 pg/L Yes
2-Butanone (MEK) 2000 20 pg/L 5 pg/L Yes
Carbon Tetrachloride 2.5 1.0 pg/L 1.0 pg/L Yes
Chloroform 35 1.0 pg/L 1.0 pg/L Yes
Chloromethane 15 1.0 pg/L 1.0 pg/L Yes
Dichloromethane 2.5 1.0 pg/L 1.0 pg/L Yes
Naphthalene 50 1.0 pg/L 1.0 pg/L Yes
Tetrahydrofuran (THF) 23 1.0 pg/L • 1.0 pg/L Yes
Toluene 500 1.0 pg/L 1.0 pg/L Yes
Xylenes(total) 5000 1.0 pg/L 1.0 pg/L Yes
Others
Field pH (S.U.) 0.01 s.u. 0.10 pH units Yes^
Fluoride (mg/l) 2 0.1 mg/L 0.1 mg/L Yes
Chloride (mg/l) 1 mg/L 2.5 mg/L Yes^
Sulfate (mg/l) 1 mg/L 125 mg/L Yes^
TDS (mg/l) 10 mg/L 10 mg/L Yes
General Inorganics
Carbonate (mg/l) 1 mg/L 2 mg/L Yes^
Bicarbonate (mg/l) 1 mg/L 2 mg/L Yes^
Sodium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Potassium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Magnesium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Calcium (mg/l) 0.50 mg/L 0.75 mg/L Yes''
Yes^ = The RL used by the
Yes^ = The RL used by the
there is no Utah GWQS for
DRC contract lab is above the DUSA GWCL but is below the Utah GWQS.
DRC contract lab is above the DUSA RL specified in Table 2 of the DUSA QAP; however,
this parameter, therefore the RL used is appropriate.
Table 2 - Reporting Limits
2009 DUSA Split Sampling Event
Analyte
MW-26
GWCL
(Class III)
DUSA QAP
Reporting Limit
Reporting
Limit Used by
DRC Lab
Reporting
Limit
Appropriate?
Nutrients (mg/L)
Ammonia (as N) 12.5 0.05 mg/L - 0.1 mg/L Yes
Nitrate + Nitrite (as N) 5 0.1 mg/L 0.2 mg/L Yes
Heavy Metals (ug/L)
Arsenic 25 5 pg/L 15 pg/L Yes^
Beryllium 2 0.50 pg/L 1.5 pg/L Yes
Cadmium 2.5 0.50 pg/L 1.5 pg/L Yes
Chromium 50 25 pg/L 15 pg/L Yes
Cobalt 365 10 pg/L 15 pg/L Yes
Copper 650 10 pg/L 15 pg/L Yes
Iron 5,500 30 pg/L 75 pg/L Yes
Lead 7.5 1.0 pg/L 3.0 pg/L Yes
Manganese 400 10 pg/L 15 pg/L Yes
Mercury 1 0.50 pg/L 0.20 pg/L . Yes
Molybdenum 20 10 pg/L 15 pg/L Yes
Nickel 50 20 pg/L 15 pg/L Yes
Selenium 25 5 pg/L 15 pg/L Yes
Silver 50 10 pg/L 15 pg/L Yes
Thallium 1 0.50 pg/L 1.5 pg/L Yes^
Tin 8,500 100 pg/L 75 pg/L Yes
Uranium 15 0.30 pg/L 30 pg/L Yes^
Vanadium 30 15 pg/L 15 pg/L Yes
Zinc 2,500 10 pg/L 30 pg/L Yes
Radiologics (pCi/L)
Gross Alpha 7.5 I.OpCi/L
VOC (ug/L)
Acetone 350 20 pg/L 5 pg/L Yes
Benzene 2.5 1.0 pg/L 1.0 pg/L Yes
2-Butanone (MEK) 2000 20 pg/L 5 pg/L Yes
Carbon Tetrachloride 2.5 1.0 pg/L 1.0 pg/L Yes
Chloroform 35 1.0 pg/L 1.0 pg/L Yes
Chloromethane 15 1.0 pg/L 1.0 pg/L Yes
Dichloromethane 2.5 1.0 pg/L 1.0 pg/L Yes
Naphthalene 50 1.0 pg/L 1.0 pg/L Yes
Tetrahydrofuran (THF) 23 1.0 pg/L 1.0 pg/L Yes
Toluene 500 1.0 pg/L 1.0 pg/L Yes
Xylenes(total) 5000 1.0 pg/L 1.0 pg/L Yes
Others
Field pH (S.U.) 0.01 s.u. 0.10 pH units Yes^
Fluoride (mg/l) 2 0.1 mg/L 0.1 mg/L Yes
Chloride (mg/l) 1 mg/L 2.5 mg/L Yes^
Sulfate (mg/l) 1 mg/L 125 mg/L Yes^
TDS (mg/l) 10 mg/L 10 mg/L Yes
General Inorganics
Carbonate (mg/l) 1 mg/L 2 mg/L Yes^
Bicarbonate (mg/l) 1 mg/L 2 mg/L Yes^
Sodium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Potassium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Magnesium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Calcium (mg/l) 0.50 mg/L 0.75 mg/L Yes''
Yes^ = The RL used by the
Yes^ = The RL used by the
there is no Utah GWQS for
DRC contract lab is above the DUSA GWCL but is below the Utah GWQS.
DRC contract lab is above the DUSA RL specified in Table 2 of the DUSA QAP; however,
this parameter, therefore the RL used is appropriate.
Table 2 - Reporting Limits
2009 DUSA Split Sampling Event
Analyte
MW-27
GWCL
(Class III)
DUSA QAP
Reporting Limit
Reporting
Limit Used by
DRC Lab
Reporting
Limit
Appropriate?
Nutrients (mg/L)
Ammonia (as N) 12.5 0.05 mg/L 0.1 mg/L Yes
Nitrate + Nitrite (as N) 5 0.1 mg/L 2 mg/L Yes
Heavy Metals (ug/L)
Arsenic 25 5 pg/L 15 pg/L Yes^
Beryllium 2 0.50 pg/L 1.5 pg/L Yes
Cadmium 2.5 0.50 pg/L 1.5 pg/L Yes
Chromium 50 25 pg/L 15 pg/L Yes
Cobalt 365 10 pg/L 15 pg/L Yes
Copper 650 10 pg/L 15 pg/L Yes
Iron 5,500 30 pg/L 75 pg/L Yes
Lead 7.5 1.0 pg/L 3.0 pg/L Yes
Manganese 400 10 pg/L 15 pg/L Yes
Mercury 1 0.50 pg/L 0.20 pg/L Yes
Molybdenum 20 10 pg/L 15 pg/L Yes
Nickel 50 20 pg/L 15 pg/L Yes
Selenium 25 5 pg/L 15 pg/L Yes
Silver 50 10 pg/L 15 pg/L Yes
Thallium 1 0.50 pg/L 1.5 pg/L Yes^
Tin 8,500 100 pg/L 75 pg/L Yes
Uranium 15 0.30 pg/L 30 pg/L Yes^
Vanadium 30 15 pg/L 15 pg/L Yes
Zinc 2,500 10 pg/L 30 pg/L Yes
Radiologics (pCi/L)
Gross Alpha 7.5 I.OpCi/L
VOC (ug/L)
Acetone 350 20 pg/L 5 pg/L • Yes
Benzene 2.5 1.0 pg/L 1.0 pg/L Yes
2-Butanone (MEK) 2000 20 pg/L 5 pg/L Yes
Carbon Tetrachloride 2.5 1.0 pg/L 1.0 pg/L Yes
Chloroform 35 1.0 pg/L 1.0 pg/L Yes
Chloromethane 15 1.0 pg/L 1.0 pg/L Yes
Dichloromethane 2.5 • 1.0 pg/L 1.0 pg/L Yes
Naphthalene 50 1.0 pg/L 1.0 pg/L Yes
Tetrahydrofuran (THF) 23 1.0 pg/L 1.0 pg/L Yes
Toluene 500 1.0 pg/L 1.0 pg/L Yes
Xylenes(total) 5000 1.0 pg/L 1.0 pg/L Yes
Others
Field pH (S.U.) 0.01 S.U. 0.10 pH units Yes^
Fluoride (mg/l) 2 0.1 mg/L 0.1 mg/L Yes
Chloride (mg/l) 1 mg/L 2.5 mg/L Yes^
Sulfate (mg/l) 1 mg/L 25 mg/L Yes^
TDS (mg/l) 10 mg/L 10 mg/L Yes
General Inorganics
Carbonate (mg/l) 1 mg/L 2 mg/L ; Yes^
Bicarbonate (mg/l) 1 mg/L 2 mg/L Yes^
Sodium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Potassium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Magnesium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Calcium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Yes^ = The RL used by the
Yes^ = The RL used by the
there is no Utah GWQS for
DRC contract lab is above the DUSA GWCL but is below the Utah GWQS.
DRC contract lab is above the DUSA RL specified in Table 2 of the DUSA QAP; however,
this parameter, therefore the RL used is appropriate.
Table 2 - Reporting Limits
2009 DUSA Split Sampling Event
Analyte
MW-28
GWCL
(Class III)
DUSA QAP
Reporting Limit
Reporting
Limit Used by
DRC Lab
Reporting
Limit
Appropriate?
Nutrients (mg/L)
Ammonia (as N) 12.5 0.05 mg/L 0.1 mg/L Yes
Nitrate + Nitrite (as N) 5 0.1 mg/L 0.2 mg/L Yes
Heavy Metals (ug/L)
Arsenic 25 5 pg/L 15 pg/L Yes^
Beryllium 2 0.50 pg/L 1.5 pg/L Yes
Cadmium 2.5 0.50 pg/L 1.5 pg/L Yes
Chromium 50 25 pg/L 15 pg/L Yes
Cobalt 365 10 pg/L 15 pg/L Yes
Copper 650 10 pg/L 15 pg/L Yes
Iron 5,500 30 pg/L 75 pg/L Yes
Lead 7.5 1.0 pg/L 3.0 pg/L Yes
Manganese 400 10 pg/L 15 pg/L Yes
Mercury' 1 0.50 pg/L 0.20 pg/L Yes
Molybdenum 20 10 pg/L 15 pg/L Yes
Nickel 50 20 pg/L 15 pg/L Yes
Selenium 25 5 pg/L 15 pg/L Yes
Silver 50 10 pg/L 15 pg/L Yes
Thallium 1 0.50 pg/L 1.5 pg/L Yes^
Tin 8,500 100 pg/L 75 pg/L Yes
Uranium 15 0.30 pg/L 30 pg/L Yes^
Vanadium 30 15 pg/L 15 pg/L Yes
Zinc 2,500 10 pg/L 30 pg/L Yes
Radiologics (pCi/L)
Gross Alpha 7.5 I.OpCi/L
VOC (ug/L)
Acetone 350 20 pg/L 5 pg/L Yes
Benzene 2.5 1.0 pg/L 1.0 pg/L Yes
2-Butanone (MEK) 2000 20 pg/L 5 pg/L Yes
Carbon Tetrachloride 2.5 1.0 pg/L 1.0 pg/L Yes
Chloroform 35 1.0 pg/L 1.0 pg/L Yes
Chloromethane 15 1.0 pg/L 1.0 pg/L Yes
Dichloromethane 2.5 1.0 pg/L 1.0 pg/L Yes
Naphthalene 50 1.0 pg/L 1.0 pg/L Yes
Tetrahydrofuran (THF) 23 1.0 pg/L 1.0 pg/L Yes
Toluene 500 1.0 pg/L 1.0 pg/L Yes
Xylenes(total) 5000 1.0 pg/L 1.0 pg/L Yes
Others
Field pH (S.U.) 0.01 s.u. 0.10 pH units Yes^
Fluoride (mg/l) 2 0.1 mg/L 0.1 mg/L Yes
Chloride (mg/l) 1 mg/L 5 mg/L Yes^
Sulfate (mg/l) 1 mg/L 125 mg/L Yes^
TDS (mg/l) 10 mg/L 10 mg/L Yes
General Inorganics
Carbonate (mg/l) 1 mg/L 2 mg/L Yes^
Bicarbonate (mg/l) 1 mg/L 2 mg/L Yes^
Sodium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Potassium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Magnesium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Calcium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Yes^ = The RL used by the
Yes^ = The RL used by the
there is no Utah GWQS for
DRC contract lab is above the DUSA GWCL but is below the Utah GWQS.
DRC contract lab is above the DUSA RL specified in Table 2 of the DUSA QAP; however,
this parameter, therefore the RL used is appropriate.
Table 2 - Reporting Limits
2009 DUSA Split Sampling Event
Analyte
MW-99
GWCL
(Class III)
DUSA QAP
Reporting Limit
Reporting
Limit Used by
DRC Lab
Reporting
Limit
Appropriate?
Nutrients (mg/L)
Ammonia (as N) 12.5 0.05 mg/L 0.1 mg/L Yes
Nitrate + Nitrite (as N) 5 0.1 mg/L 0.2 mg/L Yes
Heavy Metals (ug/L)
Arsenic 25 5 pg/L 15 pg/L Yes^
Beryllium 2 0.50 pg/L 1.5 pg/L Yes
Cadmium 2.5 0.50 pg/L 1.5 pg/L Yes
Chromium 50 25 pg/L 15 pg/L Yes
Cobalt 365 10 pg/L 15 pg/L Yes
Copper 650 10 pg/L 15 pg/L Yes
Iron 5,500 30 pg/L 75 pg/L Yes
Lead 7.5 1.0 pg/L 3.0 pg/L Yes
Manganese 400 10 pg/L 15 pg/L Yes
Mercury 1 0.50 pg/L 0.20 pg/L Yes
Molybdenum 20 10 pg/L 15 pg/L Yes
Nickel 50 20 pg/L 15 pg/L Yes
Selenium 25 5 pg/L 15 pg/L Yes
Silver 50 10 pg/L 15 pg/L Yes
Thallium 1 0.50 pg/L 1.5 pg/L Yes^
Tin 8,500 100 pg/L 75 pg/L Yes
Uranium 15 0.30 pg/L 30 pg/L Yes^
Vanadium 30 15 pg/L 15 pg/L Yes
Zinc 2,500 10 pg/L 30 pg/L Yes
Radiologics (pCi/L)
Gross Alpha 7.5 1.0 pCi/L
VOC (ug/L)
Acetone 350 20 pg/L 5 pg/L Yes
Benzene 2.5 1.0 pg/L 1.0 pg/L Yes *
2-Butanone (MEK) 2000 20 pg/L 5 pg/L Yes
Carbon Tetrachloride 2.5 1.0 pg/L 1.0 pg/L Yes
Chloroform 35 1.0 pg/L 1.0 pg/L Yes
Chloromethane 15 1.0 pg/L 1.0 pg/L Yes
Dichloromethane 2.5 1.0 pg/L 1.0 pg/L Yes
Naphthalene 50 1.0 pg/L 1.0 pg/L Yes
Tetrahydrofuran (THF) 23 1.0 pg/L 1.0 pg/L Yes
Toluene 500 1.0 pg/L 1.0 pg/L Yes
Xylenes(total) 5000 1.0 pg/L 1.0 pg/L Yes
Ofhers
Field pH (S.U.) 0.01 s.u. 0.10 pH units Yes^
Fluoride (mg/l) 2 0.1 mg/L 0.1 mg/L Yes
Chloride (mg/l) 1 mg/L 5 mg/L Yes^
Sulfate (mg/l) 1 mg/L 125 mg/L Yes^
TDS (mg/l) 10 mg/L 10 mg/L Yes
General Inorganics
Carbonate (mg/l) 1 mg/L 2 mg/L Yes^
Bicarbonate (mg/l) 1 mg/L 2 mg/L Yes^
Sodium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Potassium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Magnesium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Calcium (mg/l) 0.50 mg/L 0.75 mg/L Yes^
Yes^ = The RL used by the
Yes^ = The RL used by the
there is no Utah GWQS for
DRC contract lab is above the DUSA GWCL but is below the Utah GWQS.
DRC contract lab is above the DUSA RL specified in Table 2 of the DUSA QAP; however,
this parameter, therefore the RL used is appropriate.
Table 3 - Analytical Methods Used
2009 DUSA Split Sampling Event
Analyte
Analytical Methods
Specified in DUSA
QAP
Method Contract Lab
Said They Would Use
Contract # 086096
Analytical Method
Used by Contract
Laboratory
Correct Analytical
Method Used?
Ammonia (as N) A4500-NH3 G 4500-NH3D or 601 OB SM 4500-NH3E No
Nitrate + Nitrite (as N) E353.2 EPA 300.0 EPA 353.2 Yes
Arsenic E200.8 SW 601 OB SW 6010B Yes
Beryllium E200.8 SW6010B SW 601 OB Yes
Cadmium E200.8 SW 601 OB SW 601 OB Yes
Chromium E200.8 SW 601 OB SW 601 OB Yes
Cobalt E200.8 SW 601 OB SW 601 OB Yes
Copper E200.8 SW 601 OB SW 601 OB Yes
Iron E200.7 SW 601 OB SW 601 OB Yes
Lead E200.8 SW 601 OB SW 601 OB Yes
Manganese E200.8 SW 601 OB SW 601 OB Yes
Mercury E200.8 SW-846 7000 Series SW-846 7470A Yes
Molybdenum E200.8 SW 60IOB SW 60IOB Yes
Nickel E200.8 SW 601 OB SW 60IOB Yes
Selenium E200.8 SW 601 OB SW 60IOB Yes
Silver E200.8 SW 601 OB SW 601 OB Yes
Thallium E200.8 SW 601 OB SW 601 OB Yes
Tin E200.8 SW 601 OB SW 60IOB Yes
Uranium E200.8 SW 601 OB SW 601 OB Yes
Vanadium E200.8 SW 601 OB SW 601 OB Yes
Zinc E200.8 SW 601 OB SW 601 OB Yes
Gross Alpha E900.1 EPA 00-02 EPA 00-02 Yes
Acetone SW 8260 B SW 8260 B SW 8260B Yes
Benzene SW 8260 B SW 8260 B SW 8260B Yes
2-Butanone (MEK) SW 8260 B SW 8260 B SW 8260B Yes
Carbon Tetrachloride SW 8260 B SW 8260 B SW 8260B Yes
Chloroform SW 8260 B SW 8260 B SW 8260B Yes
Chloromethane SW 8260 B SW 8260 B SW 8260B Yes
Dichloromethane SW 8260 B SW 8260 B SW 8260B Yes
Naphthalene SW 8260 B SW 8260 B SW 8260B Yes
Tetrahydrofuran (THF) SW 8260 B SW 8260 B SW 8260B Yes
Toluene SW 8260 B SW 8260 B SW 8260B Yes
Xylenes(total) SW 8260 B SW 8260 B SW 8260B Yes
Field pH (S.U.) A4500-H B No Preference SM 4500-H+B Yes
Fluoride (mg/l) A4500-F C EPA 300 or 340.2 SM 4500 Yes
Chloride (mg/l) A4500-CI B A4500-CI EPA 300.0(1993) No
Sulfate (mg/l) A4500-SO4 E 30010 or SM426C EPA 300.0(1993) No
TDS (mg/l) A2540 C /\2540 C SM2540C Yes
Carbonate (mg/l) A2320 B A2320 B SM 2320B Yes
Bicarbonate (mg/l) A2320 B A2320 B SM 2320B Yes
Sodium (mg/l) E200.7 E200.7 SW6010B No
Potassium (mg/l) E200.7 E200.7 SW 60IOB No
Magnesium (mg/l) E200.7 E200.7 SW 601 OB No
Calcium (mg/l) E200.7 E200.7 SW 6010B No
ATTACHMENT 1
Field Data Worksheets October 12- 13, 2009:
Wells: MW-5, MW-12, MW-25, MW-26, MW-27, and MW-28
Page a of 4.5
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14 77
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o
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Comments Ar^:o-tf^ <^Ar ,'.>'^SH . ni^/.<r W^wA*^ , Ph.i Uhi^ c,^4. pg^^
u .
ATTACHMENT 2
2009 Split Sample Results for:
Wells: MW-5, MW-12, MW-25, MW-26, MW-27, and MW-28
October 12- 13,2009
MW-5
Contaminant
GWQS GWCL
(Class II)
DRC Sample DUSA Sample
Contaminant
GWQS GWCL
(Class II) 4th qtr. 2009
Oct. - Dec.
10/12/2009
4th qtr. 2009
Oct. - Dec.
10/12/2009
Relative
Percent
Difference
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 6.25 0.34 0.47
Nitrate + Nitrite (as N) 10 2.5 <0.02 <0.1 0.00
Heavy Metals (ug/L)
Arsenic 50 12.5 O.O <5.0 0.00
Beryllium 4 1 <0.30 <0.50 0.00
Cadmium 5 1.25 <0.30 <0.50 0.00
Chromium 100 25 <0.75 <25 0.00
Cobalt 730 182.5 <0.75 <10 0.00
Copper 1,300 325 O.O <10 0.00
Iron 11,000 2,750 78.4 78 0.51
Lead 15 3.75 O.O <1.0 0.00
Manganese 800 200 273 291 -6.38
Mercury 2 0.5 <0.06 <0.50 0.00
Molybdenum 40 10 1.43 <10
Nickel 100 25 <0.75 <20 0.00
Selenium 50 12.5 <4.50 <5.0 0.00
Silver 100 25 <1.50 <10 0.00
Tliallium 2 0.5 <1.50 <0.50 0.00
Tin 17,000 4,250 <1.50 <100 0.00
Uranium 30 7.5 <30 <0.30 0.00
Vanadium 60 15 23.7 <15
Zinc 5,000 1,250 <6.0 <10 0.00
Radiologics (pCi/L)
Gross Alpha 15 1 3.75 1 *3.08 (+/-4.27) | *0.6 (+/-0.7) |
VOC (ug/L)
Acetone 700 175 <1.0 <20 0.00
Benzene 5 1.25 <0.50 <1.0 0.00
2-Butanone (MEK) 4,000 1,000 <1.0 <20 0.00
Carbon Tetrachloride 5 1.25 <0.50 <1.0 0.00
Chloroform 70 17.5 <0.50 <1.0 0.00
Chloromethane 30 7.5 <0.50 <1.0 0.00
Dichloromethane 5 1.25 <1.0 <1.0 0.00
Naphthalene 100 25 <0.50 <1.0 0.00
Tetrahydrofuran (THF) 46 11.5 <1.0 6.4
Toluene 1,000 250 <0.50 <1.0 0.00
Xylenes(total) 10,000 2,500 <0.50 <1.0 0.00
Others
Field pH (S.U.) 6.5-8.5 7.38 8.12 -9.55
Fluoride (mg/l) 4 1 0.916 1 -8.77
Chloride (mg/l) 52.3 51 2.52
Sulfate (mg/l) 1,110 1,140 -2.67
TDS (mg/l) 2,050 2,000 2.47
General Inorganics Listed in Part I.E.1.(c)(2)(ii)
Carbonate (mg/l) <2.0 <1.0 0.00
Bicarbonate (mg/l) 327 393 -18.33
Sodium (mg/l) 430 531 -21.02
Potassium (mg/l) 7.12 7.77 -8.73
Magnesium (mg/l) 37.9 39.4 -3.88
Calcium (mg/l) 134 139 -3.66
Numbers in Orange show the result exceeds respective GWCL standard.
m
MW-12
Contaminant
GWQS GWCL
(Class III)
DRC Sample DUSA Sample
Contaminant
GWQS GWCL
(Class III) 4th qtr. 2009
Oct. - Dec.
10/13/2009
4th qtr. 2009
Oct. - Dec.
10/13/2009
Relative
Percent
Difference
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 12.5 0.12 <0.05
Nitrate + Nitrite (as N) 10 5 0.07 <0.1
Heavy Metals (ug/L)
Arsenic 50 25 O.O O.O 0.00
Beryllium 4 2 <0.30 <0.50 0.00
Cadmium 5 2.5 0.394 <0.50
Chromium 100 50 <0.75 <25 0.00
Cobalt 730 365 <0.75 <10 0.00
Copper 1,300 650 O.O <10 0.00
Iron 11,000 5,500 94.6 100 -5.55
Lead 15 7.5 O.O <1.0 0.00
Manganese 800 400 77.1 89 -1433
Mercury 2 1 <0.06 <0.50 0.00
Molybdenum 40 20 1.02 <10
Nickel 100 50 <0.75 <20 0.00
Selenium 50 25 19 19.7 -3.62
Silver 100 50 <1.50 <10 0.00
Thallium 2 1 <1.50 <0.50 0.00
Tin 17,000 8,500 <1.50 <100 0.00
Uranium 30 15 43 20.8
Vanadium 60 30 37.8 <15
Zinc 5,000 2,500 <6.0 <10 0.00
Radiologics (pCi/L)
Gross Alpha 15 1 7.5 1*9.48 (+/-7.27)| *0.2 (+/-0.7) |
VOC (ug/L)
Acetone 700 350 <1.0 <20 0.00
Benzene 5 2.5 <0.50 <1.0 0.00
2-Butanone (MEK) 4,000 2,000 <1.0 <20 0.00
Carbon Tetrachloride 5 2.5 <0.50 <1.0 0.00
Chloroform, 70 35 <0.50 <1.0 0.00
Chloromethane 30 15 <0.50 <1.0 0.00
Dichloromethane 5 2.5 <1.0 <1.0 0.00
Naphthalene 100 50 <0.50 <1.0 0.00
Tetrahydrofuran (THF) 46 23 <1.0 2.3
Toluene 1,000 500 <0.50 <1.0 0.00
Xylenes(total) 10,000 5,000 <0.50 <1.0 0.00
Others
Field pH (S.U.) 6.5-8.5 7.04 7.59 -7.52
Fluoride (mg/l) 4 2 0.283 0.3 -5.83
Chloride (mg/l) 62.1 67 -7.59
Sulfate (mg/l) 2,290 2,550 -10.74
TDS (mg/l) 3,920 3,830 2.32
General Inorganics Listed in Part I.E.1.(c)(2)(ii)
Carbonate (mg/l) <2.0 <1.0 0.00
Bicarbonate (mg/l) 350 443 -23.46
Sodium (mg/l) 297 307 -3.31
Potassium (mg/l) 12.6 12.9 -2.35
Magnesium (mg/l) 226 213 5.92
Calcium (mg/l) 529 506 4.44
Numbers in RED show the result exceeds respective GWQS standard.
Numbers in Orange show the result exceeds respective GWCL standard.
„.„ isii^^^^Mii
MW-25
Contaminant
GWQS GWCL DRC Sample DUSA Sample
Contaminant
GWQS GWCL
4th qtr. 2009
Oct. - Dec.
10/13/2009
4th qtr. 2009
Oct. - Dec.
10/13/2009
Relative
Percent
Difference
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 12.5 0.3 0.49
Nitrate + Nitrite (as N) 10 5 <0.02 0.1 0.00
Heavy Metals (ug/L)
Arsenic 50 25 O.O O.O 0.00
Beryllium 4 2 O.30 O.50 0.00
Cadmium 5 2.5 1.82 1.32
Chromium 100 50 0.75 <25 0.00
Cobalt 730 365 9.61 10 -3.98
Copper 1,300 650 O.O <10 0.00
Iron 11,000 5,500 <15 <30 0.00
Lead 15 7.5 O.O <1.0 0.00
Manganese 800 400 1,730 1,740 -0.58
Mercury 2 1 O.OO O.50 0.00
Molybdenum 40 20 12 12 0.00
Nickel 100 50 4.53 <20
Selenium 50 25 <4.50 O.O 0.00
Silver 100 50 <1.50 <10 0.00
Thallium 2 1 <1.50 1 0.00
Tin 17,000 8,500 <1.50 <100 0.00
Uranium 30 15 <30 6.28
Vanadium 60 30 36.5 <15
Zinc 5,000 2,500 O.O <10 0.00
Radiologics (pCi/L)
Gross Alpha 15 1 7.5 1*10.8 (+/-7.31)| *0.7(+/-0.7) |
VOC (ug/L)
Acetone 700 350 <1.0 <20 0.00
Benzene 5 2.5 O.50 <1.0 0.00
2-Butanone (MEK) 4,000 2,000 <1.0 <20 0.00
Carbon Tetrachloride 5 2.5 O.50 <1.0 0.00
Chloroform 70 35 . O.50 <1.0 0.00
Chloromethane 30 15 O.50 <1.0 0.00
Dichloromethane 5 2.5 <1.0 <1.0 0.00
Naphthalene 100 50 O.50 <1.0 0.00
Tetrahydrofuran (THF) 46 23 <1.0 <2.0 0.00
Toluene 1,000 500 O.50 <1.0 0.00
Xylenes(total) 10,000 5,000 O.50 <1.0 0.00
Others
Field pH (S.U.) 6.5-8.5 6.73 7.43 -9.89
Fluoride (mg/l) 4 2 0.323 0.3 7.38
Chloride (mg/l) 32.9 34 -3.29
Sulfate (mg/l) 1,570 1,650 -4.97
TDS (mg/l) 2,650 2,690 -1.50
General Inorganics Listed in Part I.E.1.(c)(2)(ii)
Carbonate (mg/l) <2.0 <1.0 0.00
Bicarbonate (mg/l) 338 412 -19.73
Sodium (mg/l) 286 296 -3.44
Potassium (mg/l) 9.13 9.78 -6.87
Magnesium (mg/l) 123 116 5.86
Calcium (mg/l) 341 352 -3.17
Numbers in RED show the result exceeds respective GWQS standard.
Numbers in Orange show the result exceeds respective GWCL standard.
MW-26
Contaminant
GWQS GWCL
(Class III)
DRC Sample DUSA Sample
Contaminant
GWQS GWCL
(Class III) 4th qtr. 2009
Oct. - Dec.
10/13/2009
4th qtr. 2009
Oct. - Dec.
10/13/2009
Relative
Percent
Difference
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 12.5 0.29 0.41
Nitrate + Nitrite (as N) 10 5 0.2 0.1
Heavy Metals (ug/L)
Arsenic 50 25 O.O <5.0 0.00
Beryllium 4 2 O.30 O.50 0.00
Cadmium 5 2.5 0.57 O.50
Chromium 100 50 <0.75 <25 0.00
Cobalt 730 365 1.03 <10
Copper 1,300 650 O.O <10 0.00
Iron 11,000 5,500 871 882 -1.25
Lead 15 7.5 O.O <1.0 0.00
Manganese 800 400 1,170 1,230 -5.00
Mercury 2 1 O.06 O.50 0.00
Molybdenum 40 20 1.73 <10
Nickel 100 50 2.92 <20
Selenium 50 25 <4.50 O.O 0.00
Silver 100 50 <1.50 <10 0.00
Thallium 2 1 <1.50 O.50 0.00
Tin 17,000 8,500 <1.50 <100 0.00
Uranium 30 15 54 29.6
Vanadium 60 30 35.1 <15
Zinc 5,000 2,500 O.O <10 0.00
Radiologics (pCi/L)
Gross Alpha 15 1 7.5 1 *11.4 (+/-6.74) | *3.4(+/-1.0) 1
VOC (ug/L)
Acetone 700 350 <1.0 <20 0.00
Benzene 5 2.5 O.50 <1.0 0.00
2-Butanone (MEK) 4,000 2,000 <1.0 <20 0.00
Carbon Tetrachloride 5 2.5 O.50 <1.0 0.00
Chloroform 70 35 695 750 -7.61
Chloromethane 30 15 O.50 <1.0 0.00
Dichloromethane 5 2.5 4.51 5.9 -26.71
Naphthalene 100 50 O.50 <1.0 0.00
Tetrahydrofuran (THF) 46 23 <1.0 <2.0 0.00
Toluene 1,000 500 O.50 <1.0 0.00
Xylenes(total) 10,000 5,000 O.50 <1.0 0.00
Others
Field pH (S.U.) 6.5-8.5 6.75 7.54 -11.06
Fluoride (mg/l) 4 2 0.273 0.3 -9.42
Chloride (mg/l) 54.4 58 -6.41
Sulfate (mg/l) 1,840 1,890 -2.68
TDS (mg/l) 3,200 3,140 1.89
General Inorganics Listed in Part I.E.1.(c)(2)(ii)
Carbonate (mg/l) <2.0 <1.0 0.00
Bicarbonate (mg/l) 343 415 -19.00
Sodium (mg/l) 216 212 1.87
Potassium (mg/l) 10 11.2 -11.32
Magnesium (mg/l) 160 157 1.89
Calcium (mg/l) 449 502 -11.15
Numbers in RED show the result exceeds respective GWQS standard.
Numbers in Orange show the result exceeds respective GWCL standard.
MW-27
Contaminant
GWQS GWCL DRC Sample DUSA Sample
Contaminant
GWQS GWCL
4th qtr. 2009
Oct. - Dec.
10/12/2009
4th qtr. 2009
Oct. - Dec.
10/12/2009
Relative
Percent
Difference
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 12.5 0.26 0.05
Nitrate + Nitrite (as N) 10 5 13.4 5.2
Heavy Metals (ug/L)
Arsenic 50 25 O.O O.O 0.00
Beryllium 4 2 O.30 O.50 0.00
Cadmium 5 2.5 O.30 O.50 0.00
Chromium 100 50 <0.75 <25 0.00
Cobalt 730 365 0.75 <10 0.00
Copper 1,300 650 O.O <10 0.00
Iron 11,000 5,500 <15 <30 0.00
Lead 15 7.5 O.O <1.0 0.00
Manganese 800 400 0.75 <10 0.00
Mercury 2 1 O.06 O.50 0.00
Molybdenum 40 20 3.73 <10
Nickel 100 50 0.75 <20 0.00
Selenium 50 25 11.7 12.3 -5.00
Silver 100 50 <1.50 <10 0.00
Thallium 2 1 <1.50 O.50 0.00
Tin 17,000 8,500 <1.50 <100 0.00
Uranium 30 15 40.8 32.1 23.87
Vanadium 60 30 38.1 <15
Zinc 5,000 2,500 O.O <10 0.00
Radiologics (pCi/L)
Gross Alpha 15 1 7.5 1 25.3 (+/-424) 1 *0.9 (+/-0.8) 1
VOC (ug/L)
Acetone 700 350 <1.0 <20 0.00
Benzene 5 2.5 O.50 <1.0 0.00
2-Butanone (MEK) 4,000 2,000 <1.0 <20 0.00
Carbon Tetrachloride 5 2.5 O.50 <1.0 0.00
Chloroform 70 35 O.50 <1.0 0.00
Chloromethane 30 15 O.50 <1.0 0.00
Dichloromethane 5 2.5 <1.0 <1.0 0.00
Naphthalene 100 50 O.50 <1.0 0.00
Tetrahydrofuran (THF) 46 23 <1.0 <2.0 0.00
Toluene 1,000 500 O.50 <1.0 0.00
Xylenes(total) 10,000 5,000 O.50 <1.0 0.00
Others
Field pH (S.U.) 6.5-8.5 6.96 7.75 -10.74
Fluoride (mg/L) 4 2 0.718 0.7 2.54
Chloride (mg/L) 42.3 44 -3.94
Sulfate (mg/L) 427 456 -6.57
TDS (mg/L) 1,080 1,030 4.74
General Inorganics Listed in Part I.E.1.(c)(2)(ii)
Carbonate (mg/L) <2.0 <1.0 0.00
Bicarbonate (mg/L) 374 456 -19.76
Sodium (mg/L) 75.6 70.7 6.70
Potassium (mg/L) 4.04 4.45 -9.66
Magnesium (mg/L) 73.3 73.5 -0.27
Calcium (mg/L) 169 169 ^ 0.00
Numbers in RED show the result exceeds respective GWQS standard.
Numbers in Orange show the result exceeds respective GWCL standard.
MW-28
GWQS GWCL DRC Sample DUSA Sample Duplicate of MW-28
(DRC Sample) Contaminant 4th qtr. 2009
Oct. - Dec.
4th qtr. 2009
Oct. - Dec.
Relative
Percent
Duplicate of MW-28
(DRC Sample)
10/12/2009 10/12/2009 Difference MW-28 MW-99 % diff
Parameters Listed in Table 2
Nutrients (mg/L)
Ammonia (as N) 25 12.5 <0.10 <0.05 0.00 <0.10 <0.10 0.00
Nitrate + Nitrite (as N) 10 5 0.18 0.1 0.18 0.18 0.00
Heavy Metals (ug/L)
Arsenic 50 25 12.6 12.6 0.00 12.6 12.7 -0.79
Beryllium 4 2 <0.30 <0.50 0.00 <0.30 <0.30 0.00
Cadmium 5 2.5 4.59 4.39 4.45 4.59 4.59 0.00
Chromium 100 50 <0.75 <25 0.00 <0.75 <0.75 0.00
Cobalt 730 365 30 29 3.39 30 29.4 2.02
Copper 1,300 650 O.O <10 0.00 <3.0 <3.0 0.00
Iron 11,000 5,500 37.1 <30 37.1 36.5 1.63
Lead 15 7.5 <3.0 <1.0 0.00 O.O <3.0 0.00
Manganese 800 400 1,600 1,520 5.13 1,600 1,580 1.26
Mercury 2 1 <0.06 <0.50 0.00 <0.06 <0.06 0.00
Molybdenum 40 20 1.1 <10 1.1 0.775 34.67
Nickel 100 50 23.9 25 -4.50 23.9 24.1 -0.83
Selenium 50 25 <4.50 <5.0 0.00 <4.50 <4.50 0.00
Silver 100 50 <1.50 <10 0.00 <1.50 <1.50 0.00
Thallium 2 1 2.14 1.93 10.32 2.14 <1.50 0.00
Tin 17,000 8,500 <1.50 <100 0.00 <1.50 <1.50 0.00
Uranium 30 15 <30 3.46 <30 <30 0.00
Vanadium 60 30 43.5 <15 43.5 42.4 2.56
Zinc 5,000 2,500 52.5 67 -24.27 52.5 43.2 19.44
Radiologics (pCi/L)
Gross Alpha 15 7.5 *8.33 (+/-9.02) *1.9(+/-0.9) *8.33 (+/-9.02) *5.03 (+/-6.30)
VOC (ug/L)
Acetone 700 350 <1.0 <20 0.00 <1.0 <1.0 0.00
Benzene 5 2.5 <0.50 <1.0 0.00 <0.50 <0.50 0.00
2-Butanone (MEK) 4,000 2,000 <1.0 <20 0.00 <1.0 <1.0 0.00
Carbon Tetrachloride 5 2.5 <0.50 <1.0 0.00 <0.50 <0.50 0.00
Chlorofomn 70 35 <0.50 <1.0 0.00 <0.50 <0.50 0.00
Chloromethane 30 15 <0.50 <1.0 0.00 <0.50 <0.50 0.00
Dichloromethane 5 2.5 <1.0 <1.0 0.00 <1.0 <1.0 0.00
Naphthalene 100 50 <0.50 <1.0 0.00 <0.50 <0.50 0.00
Tetrahydrofuran (THF) 46 23 <1.0 <2.0 0.00 <1.0 <1.0 0.00
Toluene 1,000 500 <0.50 <1.0 0.00 <0.50 <0.50 0.00
Xylenes( total) 10,000 5,000 <0.50 <1.0 0.00 <0.50 <0.50 0.00
Others
Field pH (S.U.) 6.5 - 8.5 6.05 6.68 -9.90 6.05 6.07 -0.33
Fluoride (mg/l) 4 2 0.577 0.7 -19.26 0.577 0.574 0.52
Chloride (mg/l) 110 104 5.61 110 107 2.76
Sulfate (mg/l) 2,250 2,380 -5.62 2,250 2,230 0.89
TDS (mg/l) 3,810 3,710 2.66 3,810 3,710 2.66
General Inorganics Listed in Part I.E.I .(c)(2)(ii)
Carbonate (mg/l) <2.0 <1.0 0.00 <2.0 <2.0 0.00
Bicarbonate (mg/l) 128 158 -20.98 128 128 0.00
Sodium (mg/l) 293 308 -4.99 293 285 2.77
Potassium (mg/l) 10.9 11.4 -4.48 10.9 10.9 0.00
Magnesium (mg/l) 169 168 0.59 169 167 1.19
Calcium (mg/l) 493 512 -3.78 493 482 2.26
Relative Percent Difference greater than 20% - violation
of Part 9.1.4(a) of the Quality Assurance Plan.
ATTACHMENT 3
Radiologic Split Sample Results Comparison
DUSA Uranium Mill
October 12- 13,2009
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