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HomeMy WebLinkAboutDRC-2012-001714 - 0901a068802f9731State of Utah GARY R HERBERT Governor GREG BELL Lieutenant Governor Department of Environmental Quality Amanda Smith Executive Director DIVISION OF RADL\TION CONTROL Rusty Lundberg Director MEMORANDUM TO THROUGH FROM DATE SUBJECT File Phil Goble, Compliance Section Manager Tom Rushing, PG "/^ 7'?^'-/2 July 25,2012 Review ofthe 4* Quarter, 2011 (dated February 28, 2012), and 1'' Quarter, 2012 (dated May 29, 2012) Groundwater Monitonng Reports Groundwater Discharge Permit (Permit) UGW370004 - Denison Mines (USA) Corp (DUSA) White Mesa Mill, Blanding, Utah This IS a summary of DRC staff review ofthe DUSA monitonng reports for the 4* Quarter 2011 (October - December) dated February 28, 2012 (received by DRC on February 29,2012) and the l" Quarter 2012 (January - March) dated May 29, 2012 (received by DRC on May 30, 2012) The review included all sampling events and accelerated monitonng dunng those quarters, as well as DUSA Plan and Time Schedule documents (wntten notification for monitonng exceedences) for the penods, specifically 1 February 15, 2012, DUSA Notice Pursuant to Part IG 1(a) fourth quarter ("Q4") groundwater monitonng, and, 2 May 11, 2012, DUSA Notice Pursuant to Part IG 1(a) first quarter ("Q1") groimdwater monitonng 1. Summarv of Findings DRC staff findings are as follows 1 The subject Monitonng Reports were received by their respective due dates, March 1, and June 1, respectively 2 Based on DRC review of the 4* Quarter 2011 Groimd Water Monitonng Report, laboratory results were not included for Ammonia (as N) for 16 of the monitonng wells required for routine groundwater compliance monitormg Specifically, laboratory results were not reported for the following wells Quarterly Monitonng Wells MW-14, MW-30, MW-31, and MW-35, and Semi-annual Monitonng Wells MW-1, MW-2, MW-3, MW-3A, MW-12, MW-15, MW-17, MW-18, MW-19, MW-23, MW 27, and MW-28 3 Turbidity values >5 NTU are ongoing in several wells 4 Monitonng wells m OOC (Potential GWCL Revisions) will be investigated per DUSA Plan and Time Schedules currently under approved plans listed in Stipulation and Consent Agreement, Docket No UGW12-03, Duly executed on July 12,2012 Denison Mines 4^'' Qtr 2011 and 1'^ Qtr 2012 Groundwater Reports DRC Review Memo Page 2 Schedules to investigate and address OOC status (Detailed Review per #17 of this memo below) 5 Updated QAP Rev 7 2 which has been approved by the Director includes prescnbed items for DUSA follow-up if duplicate sample compansons do not comply with ^0% Relative Percent Difference Calculation These protocols were implemented by DUSA dunng the Quarter 2012 although they were not yet required to be m effect 2. Accelerated Monitoring and POC Wells Exceeding GWCL When a monitonng well has a pollutant that exceeds a GWCL set forth in Table 2 of the Permit it is m Probable Out of Compliance (POOC) status According to the current Permit, DUSA is then required to immediately initiate accelerated sampling of that pollutant (see Permit, Part IG 1) When monitonng wells have parameters that have exceeded the Ground Water Compliance Limit (GWCL) two or more consecutive times they are m Out of Compliance (OOC) status (see Permit, Part IG 2) In the event a constituent is in OOC status, DUSA is 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 monitonng point and that DMT or BAT will be reestablished, in accordance with Part IG 4(c) of the Permit The DRC issued a February 7, 2012 Notice of Enforcement Discretion (NOED) for failure on the part of DUSA to comply with these timelines for acceleration of groundwater monitonng at well MW-35 DUSA stated in a March 26, 2012 response to the NOED that based on an agreement made between DRC and DUSA dunng a telephone conference call on Apnl 5, 2010, DUSA is not required to implement accelerated monitonng until "/Ae month following the submission of the Exceedence Notice for a specified quarter " Based on DRC review of notes taken dunng the Apnl 5, 2010 telephone conference (Loren Morton 4/5/10, 0900), DUSA verbally requested to wait until the end of the quarter to send m the notice of out-of compliance status - but within 30 days ofthe last lab report that DUSA receives DRC notified DUSA by letter (dated Apnl 16,2012) that in order to formalize the Apnl 5, 2010 discussion items related to out-of-compliance reporting and sampling, a wntten request for a groundwater permit modification (groundwater permit, out-of-compliance notification and accelerated monitonng requirements) is required for Director review and approval DUSA submitted a May 25,2012 wntten request for a Permit modification, including redline copies of pertinent pages of the Permit to reflect the agreements made dunng the Apnl 5, 2010 conference call The Permit modification request is currently under DRC review and is pending modificaUon In the tables listed below are monitonng wells with parameters currently in accelerated OOC or POOC status Table 1 - Wells Monitored Quarterly Accelerated to Monthly Monitoring Well Class *Position Parameter Date of First Date Accelerated Exceedance of Monitonng First GWCL Required Denison Mines 4*'' Qtr 2011 and 1'^ Qtr 2012 Groundwater Reports DRC Review Memo Page 3 Well Class *Position Parameter Date of First Exceedance of GWCL Date Accelerated Monitoring First Required MW-11 Class II water D-3 Manganese Tetrahydrofuran (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 III water C-3 Field pH Uranium 4"^ Quarter 2010 September 2010 January 2011 November 2010 MW-26^'^ Class HI water C-2 Field pH Nitrate + Nitnte (as N) Chloroform Uranium Chlonde Dichloromethane TDS February 2010 February 2010 February 2010 February 2010 February 2010 Apnl 2010 September 2010 May 2010 May 2010 May 2010 May 2010 May 2010 June 2010 January 2011 MW-30 Class n water D-2 Nitrate + Nitnte (as N) Chlonde Selenium Uranium Field pH February 2010 V' Quarter 2011 Apnl 2010 4* Quarter 2011 2"''Qtr 2011 May 2010 May 2011 July 2010 March 2012 July 2011 MW-31 Class in water D-2 Nitrate + Nitnte (as N) Chlonde Sulfate TDS Field pH February 2010 V Quarter 2011 4* Quarter 2010 September 2010 2nd Quarter 2011 May 2010 Apnl 2011 January 2011 January 2011 July 2011 MW-35 Class n C-4B Uranium Manganese Thallium Adjusted Gross Alpha 2nd Quarter 2011 2nd Quarter 2011 3"* Quarter 2011 3"* Quarter 2011 July 2011 July 2011 October 2011 October 2011 D = Down-gradient, U = Up-gradient, C = Cross-gradient, 1,2,3,4A = Cell # a = Monitormg well MW-26 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 Monitonng First Required MW-2 Class III water C-3 Adjusted Gross Alpha 4"^ Quarter 2010 Quarter 2011 MW-3 Class in water D-4A Selenium Field pH Fluonde 2"''Quarter 2010 2"^* Quarter 2010 2"^* Quarter 2010 3"* Quarter 2010 3"* Quarter 2010 3'** Quarter 2010 MW-3A Class in water D-4A Field pH Sulfate TDS Selenium 2"** Quarter 2010 2"^^ Quarter 2010 2"*^ Quarter 2010 4* Quarter 2010 3"^ Quarter 2010 3'^ Quarter 2010 3"* Quarter 2010 Quarter 2011 MW-5 Class II water D-3 Uranium 4"" Quarter 2010 Quarter 2011 MW-12 Class HI water D-3 Field pH Selenium 4* Quarter 2010 2"'^ Quarter 2010 Quarter 2011 3"^ Quarter 2010 Denison Mines 4^*" Qtr 2011 and 1'* Qtr 2012 Groundwater Reports DRC Review Memo Page 4 Well Class *Position Parameter Date of First Exceedance of GWCL Date Accelerated Monitoring First Required MW-15 Class in water D-4A Iron 4"^ Quarter 2011 V Quarter 2012 MW-18 Class III water U-1 Thallium Field pH Sulfate TDS Quarter 2010 2"^ Quarter 2010 2"** Quarter 2010 2"*^ Quarter 2010 2"^ Quarter 2010 3"^ Quarter 2010 3"'Quarter 2010 3'^ Quarter 2010 MW-19 Class III water U-1 Field pH Nitrate + Nitnte as N 2"" Quarter 2010 4* Quarter 2011 3'''Quarter 2010 V Quarter 2012 MW-23 Class ni water D-3 Field pH Manganese 2"'' Quarter 2010 4* Quarter 2011 3"^ Quarter 2010 V Quarter 2012 MW-24 Class III water D-1 Cadmium Thallium Field pH 2"''Quarter 2010 2"^^ Quarter 2010 2"^ Quarter 2010 OJ O J O J a a a OO O II I SS S S S S to t o t o OO O OO O MW-27 Class in water U-1 Nitrate + Nitnte (as N) Sulfate TDS Chlonde Field pH 2"''Quarter 2010 2°^* Quarter 2010 V Quarter 2010 1'' Quarter 2010 3'"^ Quarter 2011 3'^^ Quarter 2010 3"^ Quarter 2010 2"^* Quarter 2010 2"''Quarter 2010 4* Quarter 2011 MW-28 Class in water D-1 Field pH Chlonde 2"" Quarter 2010 2"*^ Quarter 2010 3'" Quarter 2010 3"* Quarter 2010 MW-29 Class in water D-2 Field pH Iron 4"" Quarter 2010 2"*^ Quarter 2011 Quarter 2011 3"* Quarter 2011 MW-32 Class in water C-2 Adjusted Gross Alpha Field pH 2"'' Quarter 2010 2"^* Quarter 2010 3'** Quarter 2010 3'^ Quarter 2010 *D = Down-gradient, U = Up-gradient, C = Cross-gradient, 1,2,3,4A = Cell # Table 1 above is a comprehensive list of all Groundwater Monitonng Wells in Accelerated Status DUSA IS required to nonfy the DRC on a quarterly basis regarding wells and parameters which went into accelerated monitonng dunng the penod [Part IG 1(a), Accelerated Monitoring Status Reports (AMSR)] For the two quarters of monitonng reviewed, the reports have been received as follows 1 AMSR received for the 4* Quarter Report, dated February 15, 2012 and received by DRC on February 16, 2012 2 AMSR received for the 1'^ Quarter Report, dated May 11, 2012 and received by DRC on May 14, 2012 Following is a summary of each parameter which went into accelerated dunng the reporting penods reviewed for this memo as included in the Report (Note that DRC review of the report completeness and agreed upon investigations and actions between DRC and DUSA regarding parameters/wells currently in OOC status, including dates of agreements and documents are detailed in sections below) DUSA and the Executive Secretary entered into a Stipulated Consent Agreement, specifying corrective actions for the OOC parameters, based upon agreed upon study objectives and activities Based upon language in the subject AMSR's as agreements between DRC and DUSA, current parameters which are under re- evaluation according to the agreed upon actions are included in the Stipulated Consent Agreement and do not require specific corrective actions to be listed in the AMSR with the exception of TDS in Well MW-31 Denison Mines 4**^ Qtr 2011 and 1'^ Qtr 2012 Groundwater Reports DRC Review Memo Page 5 One new OOC well/parameter is noted for the reviewed reports, Well MW-31 TDS DRC will include language in a letter for the current review to include this well/parameter m the Plan and Time Schedule study plans submitted by DUSA on June 13, 2011, as requested by DUSA m the 1'* Quarter 2012 AMSR dated May 11, 2012 and received by DRC on May 14, 2012 3. Summarv of February 15,2012,4**' Quarter 2011 Data Results AMSR: New Accelerated Well or Start OQC Status and Parameter: Semi-Annual Baseline to Quarterly Accelerated: MW-15 h-on MW-19 Nitrate + Nitnte MW-23 Manganese Semi-Annual Wells mth Two Successive Exceedances beginning Q4 (Out of Compliance) None Quarterly Baseline to Monthly Accelerated: MW-30 Uranium Quarterly Wells with Two Successive Exceedances beginning Q4 (Out of Compliance) None 4. Summarv of May 11,2012, Quarter 2012 Data Results AMSR: New Accelerated Well or Start OOC Status and Parameter: Semi-Annual Baseline to Quarterly Accelerated: None Semi-Annual Wells with Two Successive Exceedances beginning Ql (Out of Compliance) None Quarterly Baseline to Monthly Accelerated: MW-35 Selenium Quarterly Wells with Two Successive Exceedances beginning Ql (Out of Compliance) MW-31 TDS Denison Mines 4^^ Qtr 2011 and 1'* Qtr 2012 Groundwater Reports DRC Review Memo Page 6 Based on DRC review of the monitonng acceleraUons and OOC status, and with consideration of the May 25, 2012 DUSA Permit modification request, it appears that DUSA has appropnately identified monitoring exceedences as well as required follow up actions 5. 4"* Quarter 2011 Ammonia (as N) Laboratory Results Based on DRC review ofthe 4th Quarter 2011 Ground Water Monitonng Report, certain wells had to be resampled for Ammonia (as N) due to high reporting limits for the following monitonng wells Quarterly Monitonng Wells MW-14, MW-30, MW-31, and MW-35 Semi-annual Monitonng Wells MW-1, MW-2, MW-3, MW-3A, MW-12, MW-15, MW-17, MW-18, MW-19, MW-23, MW 27, and MW-28, 6. 4^** Quarter 2011 Tin Re-analysis Per the 4* Quarter Monitonng Report Part 2 1 4 it was noted that Energy Laboratones (DUSA contract laboratory) certificaUon through the State Bureau of Laboratory Improvement for Tm expired on June 30, 2011 Therefore the Tin data for the 3"* and 4* Quarters of 2011 were not m conformance with the White Mesa Uranium Mill Quality Assurance Plan DUSA notified the DRC per requirements of the Groundwater Permit Part IE 1(a), and conducted reanalysis ofthe 3"'* quarter and 4* quarter samples All samples were within holding time for Tin analysis Per DRC review the DUSA corrective actions were appropnate and no further action is recommended 7 Stipulated Consent Agreement Docket No. UGW12-03 Regarding Studies for Groundwater Monitoring OOC Parameters and Decreasing pH Trends Stipulated Consent Agreement Docket Number UGW 12-03 (SCA) was duly executed by the DRC Director and the DUSA Vice President and Counsel on July 12, 2012 The SCA was executed in order to provide formal approval of three Plan and Time Schedule Documents, including follow-up actions and timelines, in order to investigate and resolve multiple parameters m out-of-compliance status for several ground monitonng wells at the White Mesa Uranium Mill Facility Specifically the SCA provides approval for DUSA Plan and Time Schedule documents dated June 13, 2011, September 7, 2011 and Apnl 13,2012 The Apnl 13, 2012 Plan and Time Schedule addresses studies, actions, and timelines in order to investigate decreasing pH trends which have been identified at several monitonng wells across the site In general, three types of study will be included 1- Geochemical Analysis 2- Mass Balance 3- Hyrogeologic analysis for wells distant fi-om the Mill's tailings cells Geochemical Analysis Study to evaluate "indicator constituents" to determine changes in behavior for each well since the date of the Existing Wells Background Report Mass Balance Analysis Evaluation of concentration m the groundwater m companson with the Mill tailings and an evaluation of any mounding at the location of the well m question Denison Mines 4*'' Qtr 2011 and 1'^ Qtr 2012 Groundwater Reports DRC Review Memo Page 7 Hydrogeologic Analysis Evaluation to determine the plausibility of impact firom Mill tailings The purpose of these studies is to "evaluate the behavior of all the constituents in the well in question to determine if there are any changes in the behavior" of applicable constituents as compared with past studies as cited m the DUSA Plan and Time Schedules If significant changes are identified then DUSA will propose to the Executive Secretary further analysis to idennfy the source and the extent of the contamination If no significant changes are identified then DUSA will propose changes to the GWCL's for the wells and constituents of concem The SCA requires that any proposed revised GWCL is calculated m accordance with the logic flow diagram included in the background study reports (INTERA 2007) For ground water monitonng wells that are showing decreasing pH trends, DUSA v^ll additionally conduct sampling of existing well core to determine if the hypothesized cause being dissolution of iron pynte m the mineral matnx of the Burro Canyon Aquifer is potentially the cause of such decreasing trends Agreed upon well core samples will be visually examined by XRF screening and will also be submitted for bench analysis of iron pynte concentration (% of mineral matnx) Based on these agreements and the Stipulated Consent Agreement, no additional formal enforcement action is recommended for current parameters in out-of-compliance status 8. Analytical Laboratories Used by DUSA Certified by State of Utah to Perform Analysis for all Analytes The analytical laboratones (Energy Laboratones, Casper, WY and Amencan West Analytical Laboratones, Salt Lake City, UT) were contracted by DUSA to perform analysis on the samples collected dunng the 4* Quarter, 2011 and Quarter 2012 The Bureau of Laboratory Improvement - Energy Laboratones Utah Certification current valid through 6/30/2013 for affected parameters (Copy included as attachment 2 of this memo) The Bureau of Laboratory Improvement ~ Amencan West Analytical Utah Certification current valid through 5/31/2013 for affected parameters (Copy included as attachment 3 of this memo) Per DRC review of the current certification parameters (Received via E-mail from the Bureau of Laboratory Improvement), it was venfied that Energy Laboratones and Amencan West Analytical Laboratones maintained the required certifications to conduct the required analysis m conformance with the Ground Water Discharge Permit (UGW370004) and the White Mesa Uranium Mill Quality Assurance Plan Copies ofthe Utah Bureau of Laboratory Improvement certificates of accreditation, including lists of all certified parameters are included as attachments 2 and 3 of this memo 9. Monitoring WeUs Purged for Two Casing Volumes Before Sample Collection As stated in Section 6 2 7(d)(v) of the DUSA Quality Assurance Plan (QAP), Rev 6 which was in effect dunng the subject monitonng penods, two casing volumes must be evacuated from the well before the sample is collected (unless purged to dryness) 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 Per DRC cross Denison Mines 4^*^ Qtr 2011 and 1'^ Qtr 2012 Groundwater Reports DRC Review Memo Pages check of approximately 30% of the field data sheets for each of the reports reviewed, it appears DUSA correctly calculated the well casing volumes and evacuated the required two casing volumes in monitonng wells pnor to sample collection dunng the 4* Quarter 2011 and 1^' Quarter 2012 monitonng penods, with the exception of wells which were purged to dryness as discussed below Based on DRC review of the DUSA methodology for pumping wells to dryness and collection of field parameters, V\ 2"'*, and 3'** quarters 2011 report review, it was noted that the DUSA QAP requirements were not consistent with the RCRA guidance Based on formal communication with DUSA and follow- up telephone conversations, it was agreed that the facility QAP needed to be modified to provide consistency with the professional guidance Based on this a revised QAP Revision 7 2, dated June 6, 2012 was approved by the Executive Secretary on June 7, 2012 In cases where wells are evacuated to dryness the QAP now requires that "(vii) If the well is purged to dryness Record the number of gallons purged on the Field Data Worksheet The well should be sampled as soon as a sufficient volume of groundwater is available to fill sample containers Upon arrival at the well after recovery or when sufficient water is available for sampling measure depth to water and record on the Field Data Worksheet Take one set of measurements offield parameters for pH, specific conductance and temperature only Collect the samples into the appropriate sample containers Take an additional set of measurements offield parameters for pH, specific conductance and temperature after the samples have been collected If the field parameters ofpH, specific conductance and temperature are within 10% RPD the samples can be shipped for analysis If the field parameters ofpH, specific conductance and temperature are not within 10% RPD, dispose of the sample aliquots, and purge the well again as described above Repeat this process if necessary for three complete purging events If after the third purging the event, the parameters ofpH, specific conductance and temperature do not stabilize to within 10% RPD, the well is considered sufficiently purged and collected samples can be submitted for analysis " Although the ground water samples collected dunng the subject reviews were not required to comply with this methodology, since the QAP Rev 7 2 was not in effect, this summary is provided in order to clanfy the previous follow up action regarding the DRC comments and note that the issue will not be raised regardmg the failure to record stabilized field parameter pnor to sampling in correspondence related to this review The monitonng field data worksheets have been reviewed to msure that methods were compliant with the previous applicable QAP revision "(vii) If the well cannot yield two casing volumes, A Evacuate the well to dryness and record the number of gallons evacuated on the Field Data Worksheet, and Denison Mines 4^*" Qtr 2011 and 1'^ Qtr 2012 Groundwater Reports DRC Review Memo Page 9 B Prior to sampling, measure and record depth to groundwater on the Field Data Worksheet following the procedures set out in paragraph 613 above" DRC venfied that in cases where the monitoring well was evacuated to dryness, the number of gallons evacuated was recorded for the 4* Quarter 2011 and Quarter 2012 reports Also, DRC verified that depth to groundwater was measured and recorded (comments field) on the field sheet Therefore, DUSA has complied with the applicable QAP requirements 10. Groundwater Samples Collected with Turbidity Measurement ^ 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 " Dunng the 4* Quarter, 2011 (October), and 1^' Quarter 2012 (February) monitonng events, there were 11 compliance wells where DUSA collected groundwater samples above the 5 NTU standard (see table below) Table 3 - Groundwater Samples Collected with Turbidity Measurement ^ NTU Groundwater Monitonng Event Well Turbidity, NTU 4'" Qtr, 2011 MW-1 14 8 4"^ Qtr 2011 MW-03 A^'^ Resample 168 4'" Qtr, 2011 MW-12 31 8 4'" Qtr 2011 MW-19^'^ Resample 102 4'" Qtr, 2011 MW-20 ^'^ 109 4"" Qtr, 2011 MW-22 99 4"* Qtr, 2011 MW.23<'><'> 170 4'" Qtr, 2011 MW-24 ^'^ 14 8 4"" Qtr, 2011 MW-25 ^'^ 83 4'" Qtr, 2011 MW-29 ^'^ 33 1 4'" Qtr 2011 MW-37^'^ 1028 1" Qtr, 2012 MW-19 35 1" Qtr, 2012 MW-29 26 1" Qtr, 2012 MW-32 ^'^ 12 80 Footnotes 'Data for this well was obtained from Tab B of the 4"' Quarter 2011 Groundwater Monitonng Report ^Data for this well was obtained from Tab B of the 1* Quarter 2012 Groundwater Monitonng Report 'Also exceeded for a re-sample in the same quarter DUSA undertook a redevelopment project for groundwater monitonng wells dunng calendar years 2010/2011, in response to a DRC letter dated June 1,2010 A redevelopment report was prepared and submitted to DRC on September 30, 2011 (Received by DRC on October 3,2011) which is currently under DRC review Future actions will be based upon those review findings The findings regarding the current report reviews will be included as an advisory m the DRC findings letter 11. Relative Percentage Difference Calculations for Blind Duplicate Analysis DRC conducted a review of the blmd duplicate samples collected dunng each of the monitonng quarters Per the facility QAP, one blind duplicate must be collected with each sample batch DRC confirmed that one blind duplicate was collected for each batch The duplicates are required to be within 20% Relative Percent Difference (RPD) per the QAP Part 9 1 4, if any ofthe samples do not meet this companson cntena then DUSA is required to conform to the Denison Mines 4^^ Qtr 2011 and 1'^ Qtr 2012 Groundwater Reports DRC Review Memo Page 10 procedures for corrective action listed in the current QAP (Per the language in Part 10 1 a of the QAP, Rev 6), these include a Identify and define the problem, b Assign responsibility for investigating the problem, c Investigate and determine the cause of the problem, d Determine a corrective action to eliminate the problem, e Assign and accept responsibility for correcting the problem, f Implement the corrective action and evaluate its effecbveness, g Venfy that the corrective action has eliminated the problem The resuhs ofthe 4* quarter of 2011 (MW-18/MW-70 12/8/2011) blind duplicates for fron did not meet the 20% cntena (RPD value was 20 69%) DRC notes that the nonconformance was identified by DUSA in Section 3 4 7 of the 4* Quarter Monitoring Report, as well as on Table G7-A in appendix G of the report Per the DUSA Report ''The sample results reported for MW-18/MW70 were not five times greater than the reporting limit of 30 and as such the deviation from the 20% RPD requirement is acceptable " The results ofthe I'' quarter of 2012 (MW-26/MW-65 2/18/2012) blind duplicates for Chlonde did not meet the 20% cntena (RPD value was 46 15%) DRC notes that the nonconformance was identified by DUSA in SecUon 3 4 7 of the Quarter Monitonng Report, as well as on Table G7-A in appendix G of the report Per the DUSA explanation of follow-up actions ''the QA Manager contacted the Analytical Laboratory and requested a review of the raw data to assure that there were no transcription errors and the data were accurately reported The laboratory noted that the data were accurate and reported correctly Reanalysis was not completed as the samples were beyond the holding time " Histoncally, DRC has not considered an occasional deviation from the 20% RPD cntena an issue, and has not required the full corrective action as specified by the QAP It is recognized that the standard corrective actions are not directly applicable to the blind duplicate analysis since it is an independent test ofthe laboratory precision DRC saw a need for the QAP to be updated to specify corrective actions when the 20% RPD cntena is not met per previous review ofthe 1^', 2"'* and 3^^* Quarter 2011, which are feasible and useful in the case of blind duplicate compansons This update is needed in order to avoid compliance issues in regards to these occasional deviafions from the 20% RPD for blind duplicates The new protocols are a DUSA notification of the discrepancy to the laboratory b DUSA request for venfication from the laboratory that no transcnption errors occurred dunng analysis and reporting of the affected parameter c Potential re-analysis of the sample for parameters of concem if the sample is still within holdmg time Updated QAP Rev 7 2 which has been approved by the Director includes these items for follow-up As noted above, DUSA did follow these protocols dunng the 1^' Quarter 2012 although they were not yet in effect, DRC will use enforcement discretion based on the histoncal follow-up actions regarding the violanons Denison Mines 4^*" Qtr 2011 and 1'* Qtr 2012 Groundwater Reports DRC Review Memo Page 11 12. Laboratory QA/QC Flags - 4'" Quarter 2011 QA/QC problems for the 4* Quarter, 2011 are summanzed below Non-Conformance Summary Self- Identified*? DUSA Correcnve Action Summary DRC Findings Routine Reporting Limit Check found discrepancy regarding some parameters which were raised due to dilution ofthe sample (sample matnx interference) Y Discrepancies were reported Raising RL's due to sample matnx is common It may be appropnate to raise the RL's in the facility QAP MW-30 Counting Error > 20%, Gross Alpha Y DUSA Venfied that data results were below the GWCL Gross Alpha result was 5% ofthe GWCL Matnx Spike MW-3 outside of recovery limits for Silver Y Recorded Discrepancy Recovery was 69% Matrix Spike for Tin MW- 11 was outside of recovery limits Y Recorded Discrepancy MS Recovery was 61% Uranium Matnx Spike recovery was not recorded for MW-20 Y Uranium Concentration in the Sample was 4 times the spike level Manganese Matnx Spike recovery was not recorded for MW-24 Y Manganese Concentration in the Sample was 4 Umes the spike level Method Blank Bicarbonate and Sulfate concentrations reported above the QAP required RL Y Reported' Accelerated Monitonng Uranium Matnx Spike Recovery Not Recorded Y Uranium Concentration in the Sample was 4 Umes the spike level Accelerated Monitormg, Tnp Blank for 1,2 Dichlorobenzene above lab range for surrogate % recovery Y QAP does not specify a required range Recovery was 121% Note DRC reviewed the holding time summary chart, no exceedences of holding times were noted DRC reviewed the temperature check charts, all sample batches were received by the laboratory ^°C 13. Laboratory QA/QC Flags -1"* Quarter of 2012 QA/QC problems for the Quarter 2011, as summanzed by DUSA, below Denison Mines 4*'' Qtr 2011 and 1'* Qtr 2012 Groundwater Reports DRC Review Memo Page 12 Non-Conformance Summary Self- Identified'? DUSA Corrective Action Summary DRC Findings Routine Reporting Limit Check found discrepancy regardmg some parameters which were raised due to dilution of the sample (sample matnx interference) Y In all cases the reported value for the analyte was higher than the increased detection lirmt Data qualified bya"D" flag No Comments Low Matnx Spike Recovenes for several sample parameters Y Recorded the Discrepancy in the laboratory reports and section G of the report No requirements in current approved QAP High Matnx Spike Recovery for several samples Y Recorded the Discrepancy No requirements in current approved QAP Matnx Spike Recovery not Calculated for Molybdenum, Uranium, Manganese, and Zinc Y Uranium Concentration in the Sample was 4 times the spike level No Comments, No Requirements in QAP High Surrogate Recovery for several organics Y Recorded the Discrepancy No requirements in current approved QAP Method Blank Bicarbonate concentraUons reported above the QAP required RL Y Recorded High Recovery for LCS Y Recorded the Discrepancy No requirements in current approved QAP Note DRC reviewed the holding time summary chart, no exceedences of holding times were noted DRC reviewed the temperature check charts, all sample batches were received by the laboratory ^°C 14. Review of Time Concentration Plots The Permit Part IF 1 g requires DUSA to submit Time Concentration Plots for each monitonng well for chlonde, fluonde, sulfate and uranium Per DRC review ofthe Time Concentration Plots for the 4* Qtr 2011 and 1'' Qtr 2012 it appears that all issues which were reported and discussed dunng the previous DRC review ofthe r', 2"^and 3"* Qtr's 2011 Reports have been resolved Specifically, DUSA is no longer culling data fi"om the plots based on the DUSA findings that certain concentrations are outliers DRC requested that DUSA plot all ground water data histoncally and it appears that the plots are representative of the data DRC notes that per the discussions with DUSA it was agreed to that DUSA need not plot trend lines on the Time Concentration Plots Therefore, the plots no longer include trend Imes The reviewed plots appear to be in conformance with the agreed upon changes Denison Mines 4^*" Qtr 2011 and 1'* Qtr 2012 Groundwater Reports DRC Review Memo Page 13 15. Review of Depth to Groundwater Measurements and Water Table Contour Maps Per DRC cross checks of groundwater elevation measurement calculations used for the 4* Quarter 2011 and l^* Quarter 2012, approximately 5% of wells cross checked, no errors were found DRC noted that groundwater elevations appeared stable and m conformance v^ath histoncal levels dunng the review penods No decreases were noted in the ground water mound beneath the upper wildlife pond where pond recharge was stopped in the 4* Quarter 2011 16. Report Turn Around Times DRC noted that there is currently no specified maximum time limit for the contract laboratory to deliver the analytical report to DUSA Per review of the 4* Quarter 2011 Report, DRC noted that per Table I, most of the samples were collected in early October (October 3,4, 5, 6, 11, 12 of 2012) but the laboratory analytical package was not received by DUSA until late December (December 22 and 27, 2012) This is a turnaround time of approximately 11 weeks which seems unreasonably long Per review ofthe 1^* Quarter 2012 Report the tum-around times were significantly less (approx 30 days) In order to insure timely data submission, review and acceleration of monitonng fi-equencies for OOC parameters, DRC recommended in an Apnl 16,2012 letter that DUSA include a maximum time penod for analytical report receipt fi-om the laboratory of 30 days from sample receipt by the contract laboratory in a modified Quality Assurance Plan for the Mill Per a May 25,2012 response letter from DUSA they stated, "// is important to note that despite Denison's efforts, any contracted laboratory may deliver data beyond the contractually specified time limits, despite any associated contractual penalties that may apply Because Denison does not self-perform the analytical work, Denison cannot completely control the data reporting timeframes or force delivery of data within a specified timeframe Denison can and does enforce contractual requirements as practicable, however, a laboratory's performance is sometimes beyond Denison's control It is Denison's understanding that DRC has made this request for an improved data turn-around-time to assure timely implementation for accelerated monitoring frequencies for OOC parameters Denison has met the GWDP requirement to sample quarterly, and the GWDP does not require or specify a timeframe within the quarter for sampling Denison generally strives to collect the quarterly samples with sufficient time remaining in the quarter to resample if necessary to address any shipping, sample, analytical or quality issues which arise Denison should not be penalized for laboratory performance if the laboratory does not provide results within a specified time period for samples collected early in the quarter, provided Denison meets the quarterly sampling and reporting requirements in the GWDP In light of DRC's concern, and as discussed with DRC on May 14, 2012 Denison will agree to provide the Exceedence Notice 30 days from the receipt of the last data package for the latest samples collected in a quarter (either quarterly or monthly accelerated) but no later than 60 days after the end of the quarter The Plan and Time Schedule for addressing OOC parameters will be submitted within 30 days after the Exceedence Notice The proposed changes to the GWDP under separate cover (dated May 25, 2012) reflect these agreements As a result of the foregoing and per Denison's discussions with DRC by telephone on May 14, 2012, no timeframe for delivery and turn-around-time has been added to the QAP " Denison Mines 4^^" Qtr 2011 and 1'* Qtr 2012 Groundwater Reports DRC Review Memo Page 14 Based on the phone calls and agreements, DRC will monitor the laboratory tum-around times on future reports to determine if the reporting timelines result in any excessive prolongation of initiation of accelerated monitonng and/or Plan and Time Schedules to investigate and address OOC status 17. Approvals 1 One new OOC well/parameter is noted for the reviewed reports, Well MW-31 TDS DRC will include language in a letter for the current review to include this well/parameter in the Plan and Time Schedule study plans submitted by DUSA on June 13, 2011, as requested by DUSA m the 1st Quarter 2012 AMSR dated May 11, 2012 and received by DRC on May 14, 2012 References: ' Denison Mines (USA) Corp , Feburary 15, 2012, Notice Pursuant to Part IG 1(a) Q4, 2011 ^Denison Mines (USA) Corp , Febmary 28,2012, 4^'' Quarter 2011 Groundwater Monitoring Report Groundwater Discharge Permit UGW370004, White Mesa Uranium Mill ^ Denison Mines (USA) Corp , May 11, 2012, Notice Pursuant to Part IG 1(a) Ql, 2012 Denison Mines (USA) Corp , May 29, 2012, 7" Quarter 2012 Groundwater Monitoring Report Groundwater Discharge Permit UGW370004, White Mesa Uranium Mill ^Denison Mines (USA) Corp , March 22, 2010, White Mesa Uranium Mill Ground Water Monitoring Quality Assurance Plan (QAP), Revision 6 ^Denison Mines (USA) Corp , June 6, 2012, White Mesa Uranium Mill Ground Water Monitoring Quality Assurance Plan (QAP), Revision 7 2 ^Utah Department of Environmental Quality, Division of Radiation Control, Ground Water Discharge Permit, Permit No UGW370004,Denison Mines (USA) Corp Attachment 1 2011 Ground Water Monitonng Data Tables MW-1 Contaminant GWQS GWCL (Class II) MW-1 (Semi-Annual Monitonng) Contaminant GWQS GWCL (Class II) 2nd Qtr 2011 Apnl - May 4/11/2011 4th Qtr 2011 Oct - Dec 10/11/2011 Parameters Listed in Table 2 Nutnents (mg/L) Ammonia (as N) 25 6 25 0 05 No Result Nitrate ••• Nitnte (as N) 10 25 <0 1 <0 1 Heaw Metals (ug/L) Arsenic 50 12 5 <5 0 <5 0 Beryllium 4 1 <0 50 <0 50 Cadmium 5 42 <0 50 <0 50 Chromium 100 50 <25 <25 Cobalt '730 182 5 <10 <10 Copper 1 300 325 <10 <10 Iron 11 000 2,750 272 288 Lead 15 5 59 <1 0 <1 0 Manganese 800 289 218 206 Mercury 2 05 <0 50 <0 50 Molybdenum 40 10 <10 <10 Nickel 100 25 <20 <20 Selenium 50 125 <5 0 <5 0 Silver 100 25 <10 <10 Thallium 2 05 <0 50 <0 50 Tin 17 000 4,250 <100 <100 Uranium 30 7 28 <0 3 <0 30 Vanadium 60 15 <15 <15 Zinc 5,000 251 <10 <10 Radiologics (oCi/L) Gross Aloha 15 1 3 75 1 0 5r+/-0 4) | *0 5(+/-0 2) VOC (uq/L) Acetone 700 175 <20 <20 Benzene 5 1 25 <1 0 <1 0 2-Butanone (MEK) 4,000 1 000 <20 <20 Carbon Tetrachlonde 5 1 25 <1 0 <1 0 Chloroform 70 17 5 <1 0 <1 0 Chloromethane 30 75 <1 0 <1 0 Dichloromethane 5 1 25 <1 0 <1 0 Naphthalene 100 25 <1 0 <1 0 Tetrahydrofuran (THF) 46 11 5 10 7 7 82 Toluene 1,000 250 <1 0 <1 0 Xvlenes (total) 10.000 2,500 <1 0 <1 0 Others Field pH (S U ) 65-85 6 77 - 8 5 7 66 7 07 Fluonde (mg/L) 4 0 56 0 26 0 33 Chlonde (mg/L) 22 1 18 17 Sulfate (mg/L) 838 805 713 TDS (mg/L) 1,567 1.340 1.370 General Inoraanics Listed in Part 1 E 1 (c)l2)ln) Carbonate (mg/L) <1 0 <1 0 Bicarbonate (mg/L) 299 278 Sodium (mg/L) 175 155 Potassium (mg/L) 7 1 64 Magnesium (mg/L) 60 6 60 6 Calcium (mg/L) 173 169 Total anions (meg/L) 20 1 19 9 Total cations (meq/L) 21 4 20 3 MW-2 GWQS GWCL MW-2 (Semi-Annual Monitonng) Contaminant (Class III) 1st Qtr 2011 2nd Qtr 2011 3rd Qtr 2011 4th Qtr 2011 Jan - March 2/14/2011 Apnl - June 4/12/2011 July -Sept 8/8/2011 Oct - Dec 10/5/2011 Parameters Listed in Table 2 Nutrients (mg/L) Ammonia (as N) 25 125 <0 05 No Result Nitrate + Nitrite (as N) 10 0 12 <0 1 <0 1 Heaw Metals (uq/L) Arsenic 50 25 <5 0 <5 0 Beryllium 4 2 <0 50 <0 50 Cadmium 5 25 <0 50 <0 50 Chromium 100 50 <25 <25 Cobalt 730 365 <10 <10 Copper 1.300 650 <10 <10 Iron 11.000 151 6 <30 <30 Lead 15 75 <1 0 <1 0 Manganese 800 378 76 <10 <10 Mercury 2 1 <0 50 <0 50 Molybdenum 40 20 <10 <10 Nickel 100 60 <20 <20 Selenium 50 26 6 151 14 7 Sliver 100 50 <10 <10 Thallium 2 1 <0 50 0 93 Tin 17,000 8.500 <100 <100 Uranium 30 18 45 105 136 Vanadium 60 30 <15 <15 Zinc 5.000 2.500 <10 <10 Radiologics (pCi/L) Gross Alpha 15 32 11(+/-02) 1 2 (+/- 0 5) 0 5 (+/- 0 2) 1 3 (+/- 0 4) voc (ua/L) Acetone 700 350 <20 <20 Benzene 5 25 <1 0 <1 0 2-Butanone (MEK) 4,000 2,000 <20 <20 Carbon Tetrachloride 5 25 <1 0 <1 0 Chloroform 70 35 <1 0 <1 0 Chloromethane 30 15 <1 0 <1 0 Dichloromethane 5 25 <1 0 <1 0 Naphthalene 100 50 <1 0 <1 0 Tetrahydrofuran (THF) 46 23 <1 0 <1 0 Toluene 1.000 500 <1 0 <1 0 Xylenes (total) 10,000 5,000 <1 0 <1 0 Others Field pH (S U ) 65-85 65-85 7 12 7 10 Fluoride (mg/L) 4 0 43 03 03 Chlonde (mg/L) 20 7 7 Sulfate (mq/L) 2,147 1,970 1.950 TDS (mg/L) 3.800 3.130 3.080 General Inorganics Listed n Part 1 E 1 (c)(2)(ii) Carbonate (mg/L) <1 0 <1 0 Bicarbonate (mg/L) 386 349 Sodium (mg/L) 520 447 Potassium (mg/L) 108 98 Magnesium (mg/L) 91 7 93 7 Calaum (mg/L) 330 328 Total anions (meq/L) 46 46 5 Total cations (meq/L) 46 9 43 8 MW-3 GWQS GWCL MW-3 (Semi-Annual Monitonng) Contaminant (Class III) 1st Qtr 2011 2nd Qtr 2011 3rd Qtr 2011 4th Qtr 2011 <°'jan - March Apnl - June <°>July - Sept Oct - Dec 2/15/2011 4/13/2011 8/12/2011 10/10/2011 Parameters Listed in Table 2 Nutnents (mcj/L) Ammonia (as N) 25 1 16 <0 05 No Result Nitrate + Nitnte (as N) 10 0 73 03 03 Heaw Metals (ualL) Arsenic 50 25 <5 0 <5 0 Beryllium 4 2 <0 50 <0 50 Cadmium 5 4 67 1 26 1 01 Chromium 100 50 <25 <25 Cobalt 730 365 <10 <10 Copper 1.300 650 <10 <10 Iron 11,000 427 13 <30 89 Lead 15 75 <1 0 <1 0 Manganese 800 4,233 223 94 Mercury 2 1 <0 50 <0 50 Molybdenum 40 20 <10 <10 Nickel 100 100 <20 <20 Selenium 50 37 405 454 46 467 Silver 100 50 <10 <10 Thallium 2 1 6 1 02 1 38 Tin 17.000 8,500 <100 <100 Uranium 30 47 32 18 6 133 Vanadium 60 30 <15 <15 Zinc 5 000 17319 96 74 Radioloqics (oCi/L) Gross Aloha 15 1 *0 2 (+/- 0 3) *<0 2 (+/- 0 2) voc (uq/L) Acetone 700 350 <20 <20 Benzene 5 25 <1 0 <1 0 2-Butanone (MEK) 4,000 2,000 <20 <20 Carbon Tetrachlonde 5 25 <1 0 <1 0 Chloroform 70 35 <1 0 <1 0 Chloromethane 30 15 <1 0 <1 0 Dichloromethane 5 25 <1 0 <1 0 Naphthalene 100 50 <1 0 <1 0 Tetrahydrofuran (THF) 46 23 <1 0 <1 0 Toluene 1,000 500 <1 0 <1 0 Xylenes (total) 10,000 5,000 <1 0 <1 0 Others Field pH (8 U ) 65-85 65-85 6 09 614 634 6 52 Fluonde (mg/L) 4 0 68 0 69 0 71 096 0 91 Chlonde (mg/L) 76 63 63 Sulfate (mq/L) 3,663 3.490 3,470 TDS (mg/L) 6,186 5.270 5,120 General Inorganics Listed in Part 1 E 1 (c)(2)(ii) Carbonate (mg/L) <1 0 <1 0 Bicarbonate (mq/L) 272 204 Sodium (mg/L) 761 692 Potassium (mg/L) 22 6 24 2 Magnesium (mg/L) 234 245 Calcium (mg/L) 428 451 Total anions (meq/L) 79 77 4 Total cations (meo/L) 74 3 73 4 Note Concentrations highlighted and in bold exceed the Site Ground Water Complaince Linut (GWCL) (a) = Quarterly accelerated monitonng event MW-3A GWQS GWCL MW-3A (Semi-Annual Monitonng) Contaminant (Class III) 1st Qtr 2011 2nd Qtr 2011 3rd Qtr 2011 4th Qtr 2011 <^>Jan - March Apnl - June "'July - Sept Oct - Dec 2/16/2011 4/13/2011 8/11/2011 10/11/2011 Parameters Listed in Table 2 Nutnents (mg/L) Ammonia (as N) 25 06 <0 05 No Result Nitrate + Nitnte (as N) 10 1 3 1 2 1 1 Heavy Metals (ug/L) Arsenic 50 25 <5 0 <5 0 Beryllium 4 2 1 13 1 2 Cadmium 5 83 1 2 1 35 Chromium 100 50 <25 <25 Cobalt 730 365 <10 <10 Copper 1,300 650 <10 <10 Iron 11,000 5,500 <30 88 Lead 15 75 <1 0 <1 0 Manganese 800 6,287 113 144 Mercury 2 1 05 <0 50 Molybdenum 40 20 <10 <10 Nickel 100 105 <20 <20 Selenium 50 89 99 85 8 88 5 95 Silver 100 50 <10 <10 Thallium 2 1 4 0 96 0 97 Tin 17,000 8 500 <100 <100 Uranium 30 35 197 18 1 Vanadium 60 30 <15 <15 Zinc 5,000 155 63 68 Radiologics (pCi/L) Gross Alpha 15 75 0 4 (+/- 0 4) 1 *<0 07 (+/- 0 2) VOC (uo/L) Acetone 700 350 <20 <20 Benzene 5 25 <1 0 <1 0 2-Butanone (MEK) 4,000 2.000 <20 <20 Carbon Tetrachlonde 5 25 <1 0 <1 0 Chloroform 70 35 <1 0 <1 0 Chloromethane 30 94 <1 0 <1 0 Dichloromethane 5 25 <1 0 <1 0 Naphthalene 100 50 <1 0 <1 0 Tetrahydrofuran (THF) 46 23 <1 0 <1 0 Toluene 1,000 500 <1 0 <1 0 Xylenes (total) 10,000 5 000 <1 0 <1 0 Others Field pH (8 U ) 65-85 65-85 6 06 6 60 619 650 Fluonde (mg/L) 4 1 6 1 14 1 06 Chlonde (mg/L) 70 65 59 Sulfate (mg/L) 3,640 3,730 3,350 3,560 3.750 TDS (mg/L) 5,805 5 770 5.720 5,810 5 630 General Inorganics Listed n Part 1 E 1 (c)(2)(ii) Carbonate (mg/L) <1 0 <1 0 Bicarbonate (mg/L) 375 376 Sodium (mg/L) 814 708 Potassium (mg/L) 28 6 27 3 Magnesium (mg/L) 295 301 Calcium (mg/L) 473 474 Total anions (meq/L) 78 0 85 9 Total cations (meq/L) 84 0 79 9 Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limt (GWCL) (a) = Quarterly accelerated monitonng event MW-5 GWQS GWCL MW-5 (Semi-Annual Monitonng) Contaminant (Class II) 1st Qtr 2011 2nd Qtr 2011 3rd Qtr 2011 4th Qtr 2011 '^'Jan - March Apnl - June '^'July -Sept Oct - Dec 10/10/2011 Parameters Listed in Table 2 Nutnents (mq/L) Ammonia (as N) 25 1 02 0 61 03 Nitrate + Nitnte (as N) 10 25 02 02 Heavy Metals (ug/L) Arsenic 50 17 <5 0 <5 0 Beryllium 4 1 <0 50 <0 50 Cadmium 5 2 <0 50 <0 50 Chromium ICQ 25 <25 <25 Cobalt 730 182 5 <10 <10 Copper 1.300 325 <10 <10 Iron 11,000 2,750 32 62 Lead 15 4 1 <1 0 <1 0 Manganese 800 376 74 282 241 Mercury 2 1 <0 50 <0 50 Molybdenum 40 10 <10 <10 Nickel 100 44 1 <20 <20 Selenium 50 125 <5 0 <5 0 Silver 100 25 <10 <10 Thallium 2 05 <0 50 <0 50 Tin 17 000 4,250 <100 <100 Uranium 30 75 29 5 7 16 05 4 52 Vanadium 60 15 <15 <15 Zinc 5,000 87 38 <10 <10 Radiologics (pCi/L) Gross Alpha 15 3 75 1 0 4 (+/- 0 4) 1 *<0 2 (+/- 0 2) VOC (uq/L) Acetone 700 175 <20 <20 Benzene 5 1 25 <1 0 <1 0 2-Butanone (MEK) 4,000 1.000 <20 <20 Carbon Tetrachlonde 5 1 25 <1 0 <1 0 Chloroform 70 175 <1 0 <1 0 Chloromethane 30 75 <1 0 <1 0 Dichloromethane 5 1 25 <1 0 <1 0 Naphthalene 100 25 <1 0 <1 0 Tetrahydrofuran (THF) 46 11 5 1 33 2 61 Toluene 1,000 250 <1 0 <1 0 Xylenes (total) 10,000 2,500 <1 0 <1 0 Others Field pH (S U ) 65-85 65-85 6 87 7 41 Fluonde (mg/L) 4 1 42 09 0 89 Chlonde (mg/L) 71 54 50 Sulfate (mg/L) 1,518 1,250 1,240 TDS (mg/L) 2,575 2,380 2,110 General Inorganics Listed in Part 1 E 1 (c)(2)(ii) Cari3onate (mg/L) <1 0 <1 0 Bicarbonate (mg/L) 395 361 Sodium (mg/L) 535 470 Potassium (mg/L) 92 8 Magnesium (mg/L) 44 2 41 4 Calcium (mg/L) 164 151 Total anions (meq/L) 34 1 33 3 Total cations (meq/L) 35 3 31 6 Note Concentrations highlighted and in bold exceed the Site Ground Water Compliance bmit (GWCL) (a) = Quarterly accelerated monitonng event MW 11 GWQS GWCL MW 11 (Monthly Monitonng) Contaminant (Class II) January 1st Qtr 2011 March 2nd Qtr 2011 May June July 3rd(3tr 2011 September 4th Qtr 2011 November December (Class II) '"Monthly Acd Jan March '•'Monthly Acd Apnl June '"Monthly Acd '"Monthly Acd '"Monthly Acd July Sept '"Monthly Acd Od Dec '"Monthly Acd '"Monthly Acd 1/11/2011 2/2/2011 3/15/2011 4/4/2011 5/10/2011 6/20/2011 7/6/2011 8/3/2011 9/7/2011 10/4/2011 11/9/2011 12/14/2011 Parameters Listed In T able 2 Nutnents (man.) Ammonia (as N) 25 6 25 07 0 69 0 63 066 Nitrate + Nitrite (as N) 10 25 <0 1 <0 1 <0 1 <0 1 Heavy Metals (uo/L) Arsenic SO 15 <5 0 <5 0 <5 0 <5 0 Beryllium 4 1 <0 50 <0 50 <0 50 <0 50 Cadmium 5 1 25 <0 50 <0 50 <0 50 <0 50 Chiomium 100 25 <25 <25 <25 <25 Cobalt 730 1825 <10 <10 <10 <10 0>DDer 1 300 325 <10 <10 <10 <10 Iron 11 000 2 750 63 69 226 236 Lead 15 3 75 <1 0 <1 0 <1 0 <1 0 Manganese 600 131 29 121 ^ 14S 68 148 170 121 151 118 106 112 105 100 Mercury 2 05 <0 50 <0 50 <0 50 <0 50 Molytxlenum 40 10 <10 <10 <10 <10 Nickel 100 46 2 <20 <20 <20 <20 Selenium 50 12 5 <5 0 <5 0 <5 0 <5 0 Silver 100 25 <10 <10 <10 <10 Thallium 2 05 <0 50 <0 50 <0 50 <0 50 Tin 17 000 4 250 <100 <100 <100 <100 Uranium 30 75 0 42 096 0 48 0 47 Vanadium 60 15 <15 <15 <15 <15 Zinc 5 000 1 250 <10 <10 <10 <10 Radiologics (DCI/L) Gross AlDha 15 375 1 •0 1 (+/ 0 8) 1 02(+/ 01) 1 1 1 1 1(+/ 07) 1 0 5(+/ 0 3) VOC(uofl.) Acetone 700 175 <20 <20 <20 <20 Benzene 5 1 25 <1 0 <1 0 <1 0 <1 0 2 Butanone (MEK) 4 000 1 000 <20 <20 <20 <20 Cartx>n Tetrachlonde 5 1 25 <1 0 <1 0 <1 0 <1 0 Chloroform 70 17 5 <1 0 <1 0 <1 0 <1 0 Chloromethane 30 75 <1 0 <1 0 <1 0 <1 0 Dichloromethane 5 1 25 <1 0 <1 0 <1 0 <1 0 Naphthalene 100 25 <1 0 <1 0 <1 0 <1 0 Tetrahydrofuran frHF) 46 11 5 <1 0 <1 0 <1 0 <1 0 <1 0 <1 0 <1 0 <1 0 <1 0 <1 0 <1 0 <1 0 Toluene 1 000 250 <1 0 <1 0 <1 0 <1 0 Xylenes (total) 10 000 2 500 <1 0 <1 0 <1 0 <1 0 others Field pH (S U) 65 65 65 85 7 48 7 51 7 26 7 53 7 48 7 87 Fluonde (mo/L) 4 1 0 48 0 44 0 48 0 56 Chlonde (mg/L) 3916 32 31 31 28 Sulfate (mg/L) 1.309 1.190 1.140 1,090 1,140 TDS (mn.) 2.528 2.130 2,070 1,940 1,930 General Inorganics Listed in Part 1 E 1 (c)(2)(ii) Cartxinate (mg/L) <1 0 5 4 <1 0 BIcartxinate (mg/L) 385 387 347 363 Sodium (mg/L) 601 622 628 580 Potassium (mg/L) 683 73 66 65 Magnesium (mg/L) 21 2 23 4 17 3 17 3 Calaum (mg/L) 70 6 78 2 59 4 59 4 Total anions (meo/L) 32 1 30 9 29 4 30 4 Total cations (meo/L) 31 6 33 1 31 9 29 8 Nats Concantratlcru hlohllahtsd aid in bold excssd the Sits Oround Witer Ccmolainca Umit (QWCL) (a) = Monthly accvtaratsd monHorlng wont MW-12 GWQS GWCL MW-12 (Semi-Annual Monitonnq) 1st Qtr 2011 3rd Qtr 2011 4th Qtr 2011 Quarterly 2nd Qtr 2011 Quarterly 2nd Semi Contaminant (Class III) Accelerated 1st Semi Annual Accelerated Annual "'Jan-March Apnl - June "'July - Sept Oct - Dec 2/15/2011 4/27/2010 8/9/2011 10/6/2011 Parameters Listed in Table 2 Nutnents (mg/L) Ammonia (as N) 25 06 0 06 No Result Nitrate + Nitnte (as N) 10 5 <0 1 0 1 Heaw Metals (uo/L) Arsenic 50 25 <5 0 <5 0 Beryllium 4 2 <0 50 <0 50 Cadmium 5 7 <0 50 <0 50 Chromium 100 50 <25 <25 Cobalt 730 365 <10 <10 (Copper 1,300 650 <10 <10 Iron 11.000 5 500 42 <30 Lead 15 75 <1 0 <1 0 Manqanese 800 2,088 80 198 277 Mercury 2 1 <0 50 <0 50 Molybdenum 40 20 <10 <10 Nickel 100 60 <20 <20 Selenium 50 25 39 0 21 7 254 354 Silver 100 50 <10 <10 Thallium 2 1 <0 50 0 73 Tin 17,000 8,500 <100 <100 Uranium 30 23 5 20 0 20 5 Vanadium 60 30 <15 <15 Zinc 5,000 2,500 18 <10 Radioloqics (DCI/L) Gross AlDha 15 75 *0 3(+/-0 1) *0 4 (+/- 0 3) VOC (uq/L) Acetone 700 350 <20 <20 Benzene 5 25 <1 0 <1 0 2-Butanone (MEK) 4,000 2,000 <20 <20 Carbon Tetrachlonde 5 25 <1 0 <1 0 Chloroform 70 35 <1 0 <1 0 Chloromethane 30 15 <1 0 <1 0 Dichloromethane 5 25 <1 0 <1 0 Naphthalene 100 50 <1 0 <1 0 Tetrahydrofuran (THF) 46 23 1 41 1 49 Toluene 1,000 500 <1 0 <1 0 Xylenes (total) 10,000 5,000 <1 0 <1 0 Others Field pH (S U ) 65-85 65-85 64 6 67 613 6 70 Fluonde (mq/L) 4 2 0 21 0 26 Chlonde (mg/L) 80 5 64 61 Sulfate (mq/L) 2,560 2,220 2,430 TDS (mo/L) 4,323 3,910 3,860 General Inorqanics Listed n Part 1 E 1 (c)(2)(ii) Carbonate (mg/L) <1 0 <1 0 Bicarbonate (mg/L) 419 381 Sodium (mg/L) 324 276 Potassium (mg/L) 130 124 Magnesium (mg/L) 217 210 Calaum (mg/L) 520 505 Total anions (meq/L) 549 586 Total cations (meo/L) 58 3 548 Note Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL) (a) = Quarterly accelerated monitonng event MW-14 GWQS GWCL MW 14 (Quarteriy Monitonng) Contaminant (Class III) January 1st Qtr 2011 March 2nd Qtr 2011 May June July 3rd Qtr 2011 September 4th Qtr 2011 November December '"Monthly AccI Jan - March '"Monthly AccI April June '••Monthly AccI '"•Monthly AccI '"•Monthly Acci Julv - Sept '••Monthly AccI Oct Dec '"•Monthly AccI '"•Monthly AccI 1/11/2011 2/7/2011 3/14/2011 4/4/2011 5/10/2011 6/15/2011 7/5/2011 8/3/2011 9/8/2011 10/4/2011 11/30/2011 12/14/2011 1 Parameters Listed in T able 2 [ Nutnents (mg/L) lAmmonla (as N) 25 12 5 0 05 <0 05 <0 05 No Result Nitrate •*• Nitrite (as N) 10 5 <0 1 <0 1 <0 1 <0 1 Heaw Metals (uo/L) Arsenic 50 25 <5 0 <5 0 <5 0 <5 0 Beryllium 4 2 <0 50 <0 50 <0 50 <0 50 Cadmium 5 25 1 09 0 67 1.63 1 76 Chromium 100 50 <25 <25 <25 <25 Cobalt 730 365 <10 <10 <10 <10 CoDoer 1,300 650 <10 <10 <10 <10 Iron 11 000 5 500 <30 <30 <30 <30 Lead 15 75 <1 0 <1 0 <1 0 <1 0 Manganese 800 2 230 30 2 020 2140 1 990 1 960 Mercury 2 1 <0 50 <0 50 <0 50 <0 50 Molybdenum 40 25 <10 <10 <10 <10 Nickel 100 50 <20 <20 <20 <20 Selenium 50 25 <5 0 <5 0 <5 0 <5 0 Sliver ICQ 50 <10 <10 <10 <10 Thallium 2 1 <0 50 <0 50 <0 50 <0 50 Tin 17 000 8,500 <100 <100 <100 <100 Uranium 30 98 61 3 58 3 76 4 30 2 Vanadium 60 30 <15 <15 <25 <15 Zinc 5.000 35 04 11 16 12 11 Radiologics (oCiA.) Gross Aloha 15 75 1 *0 4 (+/ 0 09)1 •0 5 (+/ 0 2) 1 1 1 *0 5(+/-0 2) •0 9(+/ 0 4) 1 1 VOC (uo/L) Acetone 700 350 <20 <20 <20 <20 Benzene 5 25 <1 0 <1 0 <1 0 <1 0 2 Butanone (MEK) 4 000 2 000 <20 <20 <20 <20 Carbon Tetrachlonde 5 25 <1 0 <1 0 <1 0 <1 0 Chloroform 70 35 <1 0 <1 0 <1 0 <1 0 Chloromethane 30 15 <1 0 <1 0 <1 0 <1 0 Dichloromethane 5 25 <1 0 <1 0 <1 0 <1 0 Naohthalene 100 50 <1 0 <1 0 <1 0 <1 0 Tetrahydrofuran (THF) 46 23 <1 0 1 06 <1 0 <1 0 Toluene 1 000 500 <1 0 <1 0 <1 0 <1 0 Xylenes (total) 10,000 5.000 <1 0 <1 0 <1 0 <1 0 others Field pH (S U ) 65 85 65 85 6 36 6 22 6 77 6 63 6 33 6 04 6 47 622 6 52 67 6 82 6 81 Fluonde (mg/L) 4 02 015 0 15 0 15 6 52 0 16 Chlonde (mg/L) 27 20 20 18 6 52 19 Sulfate (mg/L) 2,330 2,180 2.110 2.210 6 52 2,250 TDS (mg/L) 4.062 3,510 3,660 3,560 6 52 3,540 General Inoraanics Listed in Pan 11 = 1 (c)(2)/ii) jCarbonate (mg/L) <1 0 <1 0 <1 0 <1 0 [Bicarbonate (mg/L) 475 470 449 445 ISodium (mg/L) 334 380 363 307 potassium (mg/L) 11 5 11 3 122 11 4 iMagnesium (mg/L) 151 135 155 151 Calcium (mo/L) 514 496 506 506 jTotal anions (meo/L) 53 7 52 1 53 8 54 7 {Total cations (meo/L) 52 9 52 7 54 1 51 3 Note 0)ncantratians in bold exceed the Site Qround Water Ckjmplalnce Limit (GWCL) (a) = Monthly accelerated monitoring event MW-15 Contaminant GWQS GWCL (Class III) MW-15 (Semi-Annual Monitonng) Contaminant GWQS GWCL (Class III) 2nd Qtr 2011 Apnl - June 4/12/2011 4th Qtr 2011 Oct - Dec 10/10/2011 Parameters Listed in Table 2 Nutnents (mg/L) Ammonia (as N) 25 0 21 <0 05 No Result Nitrate + Nitnte (as N) 10 0 27 02 02 Heaw Metals (gcj/L) Arsenic 50 25 <5 0 <5 0 Beryllium 4 2 <0 50 <0 50 Cadmium 5 25 <0 50 <0 50 Chromium 100 50 <25 <25 Cobalt 730 365 <10 <10 Copper 1,300 650 <10 <10 Iron 11,000 81 7 <30 137 Lead 15 75 <1 0 <1 0 Manganese 800 400 <10 <10 Mercury 2 1 <0 50 <0 50 Molybdenum 40 30 <10 <10 Nickel 100 97 <20 <20 Selenium 50 128 7 116 112 Silver 100 50 <10 <10 Thallium 2 1 <0 50 <0 50 Tin 17,000 8,500 <100 <100 Uranium 30 65 7 36 8 42 5 Vanadium 60 40 <15 <15 Zinc 5,000 2,500 <10 <10 Radiologics (oCi/L) Gross Alpha 15 1 7 5 1 *0 3{+/-0 2) 1 *0 01 {+/-0 2) VOC (uo/L) Acetone 700 350 <20 <20 Benzene 5 25 <1 0 <1 0 2-Butanone (MEK) 4,000 2,000 <20 <20 Carbon Tetrachlonde 5 25 <1 0 <1 0 Chlorofonm 70 35 <1 0 <1 0 Chloromethane 30 15 <1 0 <1 0 Dichloromethane 5 25 <1 0 <1 0 Naphthalene 100 50 <1 0 <1 0 Tetrahydrofuran (THF) 46 23 <1 0 <1 0 Toluene 1.000 500 <1 0 <1 0 Xylenes (total) 10 000 5,000 <1 0 <1 0 Others Field pH (S U ) 65-85 6 62 - 8 5 6 87 6 70 Fluonde (mg/L) 4 2 0 23 0 25 Chlonde (mg/L) 571 43 38 Sulfate (mg/L) 2.549 02 2,150 2,450 TDS (mg/L) 4.530 3,830 3.780 General Inorganics Listed in Part 1 E 1 (c)(2)(ii) Carbonate (mg/L) <1 0 <1 0 Bicarbonate (mg/L) 439 407 Sodium (mg/L) 516 440 Potassium (mg/L) 10 9 99 Magnesium (mg/L) 159 158 Calcium (mg/L) 446 441 Total anions (meq/L) 532 58 7 Total cations (meq/L) 58 1 544 MW-17 Contaminant GWQS GWCL (Class III) MW-17 (Semi-Annual Monitonng) Contaminant GWQS GWCL (Class III) 2nd Qtr 2011 Apnl - June 4/13/2011 (Chlonde Resampled 5/25/2011) 4th Qtr 2011 Oct - Dec 10/10/2011 Parameters Listed in Table 2 Nutnents (mg/L) Ammonia (as N) 25 0 26 <0 05 No Result Nitrate + Nitnte (as N) 10 5 1 1 1 2 Heaw Metals (uo/L) Arsenic 50 25 <5 0 <5 0 Beryllium 4 2 <0 50 <0 50 (Dadmium 5 25 <0 50 <0 50 Chromium 100 50 <25 <25 Cobalt 730 365 <10 <10 Copper 1,300 650 <10 <10 Iron 11,000 5.500 <30 35 Lead 15 75 <1 0 <1 0 Manganese 800 915 4 184 152 Mercury 2 1 <0 50 <0 50 Molybdenum 40 20 <10 <10 Nickel 100 50 <20 <20 Selenium 50 25 138 139 Silver 100 50 <10 <10 Thallium 2 1 <0 50 0 51 Tin 17,000 8,500 <100 <100 Uranium 30 46 66 178 24 Vanadium 60 30 <15 <15 Zinc 5,000 2,500 <10 <10 Radiologics (DCI/L) Gross Aloha 15 1 2 8 1 *0 5(+/-0 2) 1 *0 6(+/-0 2) VOC (uq/L) Acetone 700 350 <20 <20 Benzene 5 25 <1 0 <1 0 2-Butanone (MEK) 4,000 2,000 <20 <20 Carbon Tetrachtonde 5 25 <1 0 <1 0 Chloroform 70 35 <1 0 <1 0 Chloromethane 30 15 <1 0 <1 0 Dichloromethane 5 25 <1 0 <1 0 Naphthalene 100 50 <1 0 <1 0 Tetrahydrofuran (THF) 46 23 <1 0 <1 0 Toluene 1,000 500 <1 0 <1 0 Xylenes (total) 10,000 5,000 <1 0 <1 0 Others Field DH (S U ) 65-85 6 40 - 8 5 6 85 6 82 Fluonde (mq/L) 4 2 0 26 0 27 Chlonde (mg/L) 46 8 36(5/25/11 Sample) 37 Sulfate (mg/L) 2,860 2.190 2.420 TDS (mq/L) 5,085 42 3.860 3.750 General Inorqanics Listed in Part 1 E 1 (c)(2)(ii) Carbonate (mq/L) <1 0 <1 0 Bicarbonate (mg/L) 473 435 Sodium (mg/L) 590 496 Potassium (mg/L) 12 3 11 4 Magnesium (mq/L) 170 169 Calaum (mg/L) 354 348 Total anions (meq/L) 545 58 6 Total cations (meo/L) 57 6 53 1 MW-18 GWQS GWCL MW-18 (Semi-Annual Monitonng) Contaminant (Class III) 1st Qtr 2011 2nd Qtr 2011 3rd Qtr 2011 4th Qtr 2011 Jan - March Apnl - June '^'July - Sept 8/10/2011 (Thallium Resampled Oct - Dec 2/15/2011 4/6/2011 9/21/11) 10/11/2011 Parameters Listed in Table 2 Nutnents (mg/L) Ammonia (as N) 25 0 27 <0 05 No Result Nitrate + Nitnte (as N) 10 25 <0 1 <0 1 Heavy Metals (uq/L) Arsenic 50 25 <5 0 <5 0 Beryllium 4 2 <0 50 <0 50 Cadmium 5 25 <0 50 <0 50 Chromium 100 50 <25 <25 Cobalt 730 365 <10 <10 Copper 1,300 650 <10 <10 Iron 11.000 414 68 51 80 Lead 15 75 <1 0 <1 0 Manganese 800 350 70 77 Mercury 2 1 <0 50 <0 50 Molybdenum 40 20 <10 <10 Nickel 100 50 <20 <20 Selenium 50 25 <5 0 <5 0 Silver 100 50 <10 <10 Thallium 2 1 95 3.49 3.74 3 39(9/21/11 Sample) 3 83 Tin 17,000 8,500 <100 <100 Uranium 30 55 1 45 4 40 3 Vanadium 60 30 <15 <15 Zinc 5,000 2,500 <10 <10 Radiologics (pCi/L) Gross Alpha 15 75 *0 6 (+/- 0 2) *0 7 (+/- 0 2) VOC (uq/L) Acetone 700 350 <20 <20 Benzene 5 25 <1 0 <1 0 2-Butanone (MEK) 4,000 2,000 <20 <20 Carbon Tetrachlonde 5 25 <1 0 <1 0 Chlorofonn 70 35 <1 0 <1 0 Chloromethane 30 15 <1 0 <1 0 Dichloromethane 5 25 <1 0 <1 0 Naphthalene 100 50 <1 0 <1 0 Tetrahydrofuran (THF) 46 23 <1 0 <1 0 Toluene 1,000 500 <1 0 <1 0 Xylenes (total) 10,000 5,000 <1 0 <1 0 Others Field pH (S U ) 65-85 6 25 - 8 5 6 27 6 67 5 95 6 54 Fluonde (mg/L) 4 0 45 0 19 0 22 Chlonde (mg/L) 69 23 46 53 Sulfate (mg/L) 1,938 90 1.770 1,780 1,910 2,020 TDS (mg/L) 3,198 77 3,250 3^50 3,190 3,220 General Inorganics Listed in Part 1 E 1 (c)(2)(ii) Carbonate (mg/L) <1 0 <1 0 Bicarbonate (mg/L) 473 435 Sodium (mg/L) 187 161 Potassium (mg/L) 96 9 Magnesium (mg/L) 130 132 Calcium (mg/L) 566 586 Total anions (meq/L) 46 2 50 7 Total cations (meq/L) 47 3 47 4 Note Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL) MW-19 GWQS GWCL MW-19 (Semi-Annual Monitonng ) Contaminant (Class III) 1st Qtr 2011 2nd Qtr 2011 3rd Qtr 2011 4th Qtr 2011 Jan - March April - June ^^^July - Sept Oct - Dec 2/21/2011 4/6/2011 7/20/2011 10/12/2011 Parameters Listed in Table 2 Nutrients (mg/L) Ammonia (as N) 25 0 31 <0 05 No Result Nitrate + Nitrite (as N) 10 2 83 26 4 Heavy Metals (gg/L) Arsenic 50 25 <5 0 <5 0 Beryllium 4 2 <0 50 <0 50 Cadmium 5 25 <0 50 <0 50 Chromium 100 50 <25 <25 Cobalt 730 365 <10 <10 Copper 1,300 650 <10 <10 Iron 11,000 5,500 <30 <30 Lead 15 75 <1 0 <1 0 Manganese 800 400 <10 39 Mercury 2 1 <0 50 <0 50 Molybdenum 40 20 <10 <10 Nickel 100 50 <20 <20 Selenium 50 28 96 106 21 9 Silver 100 50 <10 <10 Thallium 2 2 1 0 53 0 59 Tin 17,000 8,500 <100 <100 Uranium 30 21 43 6 78 5 48 Vanadium 60 30 <15 <15 Zinc 5.000 2,500 <10 <10 Radiologics (pCi/L) Gross Alpha 15 2 36 1 •0 95(+/-0 2) 1 *0 6 (+/- 0 2) VOC (uq/L) Acetone 700 350 <20 <20 Benzene 5 25 <1 0 <1 0 2-Butanone (MEK) 4.000 2,000 <20 <20 Carbon Tetrachloride 5 25 <1 0 <1 0 Chloroform 70 35 <1 0 <1 0 Chloromethane 30 15 <1 0 <1 0 Dichloromethane 5 25 <1 0 <1 0 Naphthalene 100 50 <1 0 <1 0 Tetrahydrofuran (THF) 46 23 <1 0 <1 0 Toluene 1.000 500 <1 0 <1 0 Xylenes (total) 10.000 5,000 <1 0 <1 0 Others Field pH (S U ) 65-85 6 78 - 8 5 6 79 6 86 6 65 6 88 Fluoride (mg/L) 4 1 39 09 1 04 Chloride (mg/L) 104 41 26 38 Sulfate (mg/L) 2,534 10 473 1320 TDS (mq/L) 4,257 42 1.110 1.410 General Inorganics Listed in Part 1 E 1 (c)(2)(ii) Carbonate (mg/L) <1 0 <1 0 Bicarbonate (mg/L) 264 199 Sodium (mg/L) 102 128 Potassium (mg/L) 42 5 Magnesium (mg/L) 48 9 72 1 Calcium (mg/L) 150 198 Total anions (meq/L) 15 1 32 1 Total cations (meq/L) 160 21 5 Note Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL) (a) = Quarterly accelerated monitonng event MW-20 GWQS MW-20 (Semi-Annual Monitoring ) Contaminant (Class III) 1st Qtr 2011 2nd Qtr 2011 4th Qtr 2011 Jan - March April - June Oct - Dec 2/16/2011 4/11/2011 10/20/2011 Parameters Listed in Table 2 Nutrients (mg/L) Ammonia (as N) 25 0 06 0 12 23 Nitrate + Nitrite (as N) 10 4 1 29 16 Heavy Metals (ug/L) Arsenic 50 <5 0 <5 0 <5 0 Beryllium 4 <0 50 <0 50 <0 50 Cadmium 5 <0 50 <0 50 <0 50 Chromium 100 <25 <25 <25 Cobalt 730 <10 <10 <10 Copper 1.300 <10 <10 <10 Iron 11.000 <30 <30 <30 Lead 15 <1 0 <1 0 <1 0 Manganese 800 <10 19 <10 Mercury 2 <0 50 <0 50 1 41 Molybdenum 40 10 <10 39 Nickel 100 <20 <20 <20 Selenium 50 <5 0 <5 0 <5 0 Silver 100 <10 <10 <10 Thallium 2 0 58 <0 50 0 75 Tin 17,000 <100 <100 <100 Uranium 30 6 95 8 42 <0 30 Vanadium 60 <15 <15 16 Zinc 5,000 31 26 <10 Radiologics (pCi/L) Gross Alpha 15 *0 6(+/-0 1) *0 7 (+/- 0 2) *0 03 (+/- 0 2) VOC (ug/L) Acetone 700 <20 <20 <20 Benzene 5 <1 0 <1 0 <1 0 2-Butanone (MEK) 4,000 <20 <20 <20 Carbon Tetrachloride 5 <1 0 <1 0 <1 0 Chloroform 70 <1 0 <1 0 <1 0 Chloromethane 30 <1 0 <1 0 <1 0 Dichloromethane 5 <1 0 <1 0 <1 0 Naphthalene 100 <1 0 <1 0 <1 0 Tetrahydrofuran (THF) 46 <1 0 <1 0 <1 0 Toluene 1,000 <1 0 <1 0 <1 0 Xylenes (total) 10,000 <1 0 <1 0 <1 0 Others Field pH (S U ) 65-85 6 95 6 90 8 05 Fluoride (mg/L) 4 0 35 0 35 0 24 Chlonde (mg/L) 64 64 55 Sulfate (mg/L) 3,140 3,260 3,160 TDS (mg/L) 5,380 5.470 4.600 General Inorganics Listed in Part 1 E 1 (c)(2)(ii) Carbonate (mg/L) <1 0 <1 0 11 Bicarbonate (mg/L) 217 229 15 Sodium (mg/L) 1.260 1.340 1,220 Potassium (mg/L) 43 6 45 3 20 2 Magnesium (mg/L) 86 9 84 3 55 Calcium (mg/L) 336 338 350 Total anions (meq/L) 71 1 73 8 69 1 Total cations (meq/L) 79 7 83 1 71 8 Note GWCLs are not established at Monitonng Well MW-20 because the well is a General Monitonng Well ratherthan a POC Well Concentrations highlighted and in bold exceed the Site Ground Water Quality Standard (GWQS) MW-22 GWQS MW-22 (Quarterly Monitoring to Semi Annual) Contaminant (Class III) 1st Qtr 2011 2nd Qtr 2011 2nd Semi 2011 Jan - March April - June July - Dec 2/8/2011 4/6/2011 10/11/2011 Parameters Listed in Table 2 Nutrients (mg/L) Ammonia (as N) 25 013 <0 05 04 Nitrate + Nitrite (as N) 10 25 23 26 Heavy Metals (pg/L) Arsenic 50 <5 0 <5 0 <5 0 Beryllium 4 2 31 2 24 911 Cadmium 5 85 75 4 135 Chromium 100 <25 <25 <25 Cobalt 730 267 237 496 Copper 1.300 <10 11 <10 Iron 11.000 <30 <30 41 Lead 15 1 1 <1 0 45 Manganese 800 28,600 27,000 42,100 Mercury 2 <0 50 <0 50 <0 50 Molybdenum 40 719 798 195 Nickel 100 130 113 270 Selenium 50 12 82 152 Silver 100 <10 <10 <10 Thallium 2 1 12 0 95 1 59 Tin 17,000 <100 <100 <100 Uranium 30 444 42 3 27 2 Vanadium 60 <15 <15 <15 Zinc 5,000 511 455 989 Radiologics (pCi/L) Gross Alpha 15 *9 5(+/-1 1) 2 4 (+/- 0 3) 4 2 (+/- 0 5) VOC (pg/L) Acetone 700 <20 <20 <20 Benzene 5 <1 0 <1 0 <1 0 2-Butanone (MEK) 4,000 <20 <20 <20 Carbon Tetrachloride 5 <1 0 <1 0 <1 0 Chloroform 70 <1 0 <1 0 <1 0 Chloromethane 30 <1 0 <1 0 <1 0 Dichloromethane 5 <1 0 <1 0 <1 0 Naphthalene 100 <1 0 <1 0 <1 0 Tetrahydrofuran (THF) 46 <1 0 <1 0 <1 0 Toluene 1.000 <1 0 <1 0 <1 0 Xylenes (total) 10,000 <1 0 <1 0 <1 0 Others Field pH (S U ) 65-85 5 58 6 39 5 35 Fluoride (mg/L) 4 3 09 2 89 5.21 Chloride (mg/L) 57 55 56 Sulfate (mg/L) 4.490 4.420 6,100 TDS (mg/L) 6.800 6.700 8.190 General Inorganics Listed in Part 1 E 1 (c)(2)(ii) Carbonate (mg/L) <1 0 <1 0 <1 0 Bicarbonate (mg/L) 565 585 135 Sodium (mg/L) 258 268 258 Potassium (mg/L) 21 5 21 2 23 5 Magnesium (mg/L) 803 834 1090 Calcium (mg/L) 440 437 448 Total anions (meq/L) 105 103 131 Total cations (meq/L) 99 8 103 124 Note GWCLs are not established at Monitonng Well MW-22 because the well is a General Monitonng Well ratherthan a POC Well Concentrations highlighted and in bold exceed the Site Ground Water Quality Standard (GWQS) MW-23 GWQS GWCL MW-23 (Semi-Annual Monitonng) Contaminant (Class III) 1st Qtr 2011 2nd Qtr 2010 3rd Qtr 2011 4th Qtr 2011 <^'jan -March Apnl - June <^'july - Sept Oct - Dec 2/9/2011 4/11/2011 8/4/2011 10/6/2011 Parameters Listed in Table 2 Nutnents (mq/L) Ammonia (as N) 25 06 <0 05 No Result Nitrate + Nitnte (as N) 10 5 03 0 1 Heavy Metals (uo/L) Arsenic 50 25 <5 0 <5 0 Beryllium 4 2 <0 50 <0 50 Cadmium 5 25 <0 50 <0 50 Chromium 100 50 <25 <25 Cobalt 730 365 <10 <10 Copper 1,300 650 <10 <10 Iron 11,000 5.500 98 275 Lead 15 75 <1 0 <1 0 Manganese 800 550 32 551 Mercury 2 1 <0 50 <0 50 Molybdenum 40 20 <10 <10 Nickel 100 50 <20 <20 Selenium 50 25 <5 0 <5 0 Silver 100 50 <10 <10 Thallium 2 1 5 <0 50 0 51 Tin 17,000 8,500 <100 <100 Uranium 30 32 8 37 8 21 Vanadium 60 30 <15 <15 Zinc 5,000 74 24 21 Radiologics (pCi/L) Gross Alpha 15 2 86 1 *0 9 (+/- 0 2) 1 *1 7 {+/- 0 5) VOC (UQ/L) Acetone 700 350 <20 <20 Benzene 5 25 <1 0 <1 0 2-Butanone (MEK) 4,000 2,000 <20 <20 Carbon Tetrachlonde 5 25 <1 0 <1 0 Chlorofonm 70 35 <1 0 <1 0 Chloromethane 30 57 <1 0 <1 0 Dichloromethane 5 25 <1 0 <1 0 Naphthalene 100 50 <1 0 <1 0 Tetrahydrofuran (THF) 46 23 <1 0 <1 0 Toluene 1.000 500 <1 0 <1 0 Xylenes (total) 10.000 5.000 <1 0 <1 0 Others Field pH (S U ) 65-85 65-85 613 7 19 638 6 56 Fluonde (mg/L) 4 2 0 23 02 Chlonde (mg/L) 10 8 6 Sulfate (mg/L) 2.524 2,100 2.030 TDS (mg/L) 3,670 3,560 3.020 General Inorganics Listed n Part 1 E 1 (c)(2)(ii) Carbonate (mg/L) <1 0 <1 0 Bicarbonate (mg/L) 326 249 Sodium (mg/L) 403 308 Potassium (mg/L) 103 87 Magnesium (mg/L) 145 126 Calcium (mg/L) 448 394 Total anions (meq/L) 49 3 46 6 Total cations (meq/L) 52 1 43 6 Note Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL) (a) = Quarteriy accelerated monitonng event MW-24 GWQS GWCL MW-24 (Semi-Annual Monitonng Contaminant (Class III) 1st Qtr 2011 2nd Qtr 2011 3rd Qtr 2011 4th Qtr 2011 ""July-Sept 2/10/2011 Apnl - June 4/5/2011 <^'july-Sept 8/4/2011 Oct - Dec 10/11/2011 Parameters Listed in Table 2 Nutnents (mg/L) Ammonia (as N) 25 7 0 08 04 Nitrate + Nitnte (as N) 10 5 02 <0 1 Heaw Metals (pq/L) Arsenic 50 17 <5 0 <5 0 Beryllium 4 2 <0 50 <0 50 Cadmium 5 25 2 78 2 61 1 46 1 78 Chromium 100 50 <25 <25 Cobalt 730 365 <10 <10 Copper 1,300 650 <10 <10 Iron 11,000 4,162 801 524 Lead 15 75 <1 0 <1 0 Manganese 800 7 507 4.230 2,310 Mercury 2 1 <0 50 <0 50 Molybdenum 40 20 <10 <10 Nickel 100 50 32 <20 Selenium 50 25 <5 0 <5 0 Silver 100 50 <10 <10 Thallium 2 1 142 1 07 <0 50 0 62 Tin 17.000 8.500 <100 <100 Uranium 30 11 9 1 4 2 62 Vanadium 60 30 <15 <15 Zinc 5,000 2,500 41 35 Radiologics (pCi/L) Gross Alpha 15 7 5 *0 5 (+/- 0 2) *0 2 (+/- 0 2) VOC (ug/L) Acetone 700 350 <20 <20 Benzene 5 25 <1 0 <1 0 2-Butanone (MEK) 4,000 2,000 <20 <20 Cartxjn Tetrachlonde 5 25 <1 0 <1 0 Chloroform 70 35 <1 0 <1 0 Chloromethane 30 15 <1 0 <1 0 Dichloromethane 5 25 <1 0 <1 0 Naphthalene 100 50 <1 0 <1 0 Tetrahydrofuran (THF) 46 23 <1 0 <1 0 Toluene 1,000 500 <1 0 <1 0 Xylenes (total) 10 000 5,000 <1 0 <1 0 Others Field pH (S U ) 65-85 65-85 5 75 614 645 644 Fluonde (mg/L) 4 0 36 0 19 0 36 Chlonde (mg/L) 71 45 39 Sulfate (mg/L) 2,903 2.560 2,500 TDS (mo/L) 4,450 4,330 3.740 General Inorganics Listed in Part 1 E 1 (c)(2)(ii) Carbonate (mg/L) <1 0 <1 0 Bicarbonate (mg/L) 173 327 Sodium (mg/L) 508 356 Potassium (mg/L) 125 93 Magnesium (mg/L) 169 120 Calcium (mg/L) 474 488 Total anions (meq/L) 57 4 58 4 Total cations (meq/L) 60 0 50 Note (Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL) (a) = Quarterly accelerated monitonng event MW-25 GWQS GWCL MW-25 (Quarterly Monitonng) Contaminant (Class III) January 1st Qtr 2011 March 2nd Qtr 2011 May June July 3rd Qtr 2011 September 4th Qtr 2011 November December '"Monthly AccI Jan • March "'Monthly AccI Apnl - June "'Monthly AccI "'Monthly AccI "'Monthly AccI July - Sept "'Monthly AccI Oct - Dec "'Monthly AccI "'Monthly AccI 1/11/2011 2/2/2011 3/15/2011 4/4/2011 5/11/2011 6/20/2011 7/6/2011 8/3/2011 9/7/2011 10/4/2011 11/9/2011 12/12/2011 Paranieters Listed in Table 2 1 Nutnents (mg/L) Ammonia (as N) 25 0 77 0 49 0 46 0 41 04 Nitrate ••• Nitnte (as N) 10 5 <0 1 <0 5 <0 1 <0 1 Heaw Metals (uo/L) Arsenic 50 25 <5 0 <5 0 <5 0 <5 0 Beryllium 4 2 <0 50 <0 50 <0 50 <0 50 Cadmium 5 1 5 1 34 1 27 1 19 1 27 Chromium 100 50 <25 <25 <25 <25 Cobalt 730 365 11 <10 <10 <10 Copper 1 300 650 <10 <10 <10 <10 Iron 11 000 5 500 <30 <30 <30 <30 Lead 15 75 <1 0 <1 0 <1 0 <1 0 Manganese 800 1 806 1 650 1 530 1 330 1 580 Mercury 2 1 <0 50 <0 50 <0 50 <0 50 Molybdenum 40 20 <10 11 12 10 Nickel 100 50 <20 <20 <20 <20 Selenium 50 25 <5 0 <5 0 <5 0 <5 0 Silver 100 50 <10 <10 <10 <10 Thallium 2 1 1 0 93 0 92 0 99 1 08 Tin 17 000 8 500 <100 <100 <100 <100 Uranium 30 65 7 02 4 77 68 5 56 6 72 7 06 6 74 6 37 5 96 5 27 6 56 6 1 Vanadium 60 30 <15 <15 <15 <15 Zinc 5,000 2,500 <10 <10 <10 <10 Radiologics (pCi/L) Gross Alpha 15 75 *0 6(+/-0 09)| *08(+/-02) 1 1 1 •0 6 (+/- 0 2) 1 1 (+/- 0 4) 1 VOC (uo/L) Acetone 700 350 <20 <20 <20 <20 Benzene 5 25 <1 0 <1 0 <1 0 <1 0 2-Butanone (MEK) 4 000 2 000 <20 <20 <20 <20 Carbon Tetrachlonde 5 25 <1 0 <1 0 <1 0 <1 0 Chloroform 70 35 <1 0 <1 0 <1 0 <1 0 Chloromethane 30 15 <1 0 <1 0 <1 0 <1 0 Dichloromethane 5 25 <1 0 <1 0 <1 0 <1 0 Naphthalene 100 50 <1 0 <1 0 <1 0 <1 0 Tetrahydrofuran (THF) 46 23 <1 0 <1 0 <1 0 <1 0 Toluene 1 000 500 <1 0 <1 0 <1 0 <1 0 Xvlenes (total) 10,000 5,000 <1 0 <1 0 <1 0 <1 0 Others Field pH (S U ) 65-85 65-85 643 6 59 684 6 70 5 91 5 78 6 30 646 654 6 60 6 51 6 85 Fluonde (mg/L) 4 0 42 0 31 0 28 0 31 0 32 Chlonde (mg/L) 35 30 31 32 32 Sulfate (mg/L) 1.933 1,690 1,620 1.660 1 680 TDS (mo/L) 2,976 2.720 2,900 2.830 2.700 General Inoraanics Listed in Part 1 E1 (c)(2)(ii) Carbonate (mg/L) <1 0 <1 0 <1 0 <1 0 Bicarbonate (mg/L) 405 408 382 387 Sodium (mg/L) 298 310 310 276 Potassium (mg/L) 9 26 97 98 92 Magnesium (mg/L) 119 117 123 120 Calcium (mg/L) 358 354 367 354 Total anions (meq/L) 42 7 41 3 41 7 42 2 Total cations (mea/L) 40 9 41 1 42 2 39 8 Concentrations highlighted and in bold exceed the Site Ground Water Complaince Umit (GWCL) (a) = monthly accelerated monitonng event MW-26 Contaminant GWQS GWCL (Class III) MW 26 (Quarteriy Monitonng) Contaminant GWQS GWCL (Class III) January '"•Monthly AccI 1/12/2011 1st Qtr 2011 Jan March 2/16/2011 March '"•Monthly AccI 3/15/2011 2nd Qtr 2011 Apnl June 4/1/2011 May '"•Monthly AccI 5/10/2011 June '"•Monthly AccI 6/20/2011 July '"•Monthly Acd 7/6/2011 3nJ Qtr 2011 July Sept 8/3/2011 September '••Monthly Acci 9/7/2011 4th Qtr 2011 Oct Dec 10/12/2011 November | December '"•Monthly Acci 1 '"•Monthly AccI 11/9/2011 1 12/14/2011 Parameters Listed in Table 2 Nutnents (mg/L) Ammonia (as N) 25 0 92 0 25 0 22 0 27 0 1 Nitrate + Nitnte (as N) 10 0 62 02 06 06 08 04 03 09 06 24 09 1 3 23 Heaw Metals (ug/L) Arsenic 50 25 <5 0 <5 0 <5 0 <5 0 Beryllium 4 2 <0 50 <0 50 <0 50 <0 50 Cadmium 5 25 <0 50 <0 50 <0 50 <0 50 Chromium 100 50 <25 <25 <25 <25 Cobalt 730 365 <10 <10 <10 •elO CoDDer 1 300 650 <10 <10 <10 <10 Iron 11 000 2 675 83 606 596 1.280 681 Lead 15 75 <1 0 <1 0 <1 0 <1 0 Manoanese 800 1 610 1 470 1 380 984 1.500 Mercury 2 1 <0 50 <0 50 •C0 50 <0 50 Molybdenum 40 20 <10 <10 <10 <10 Nickel 100 50 <20 <20 <20 <20 Selenium 50 25 76 <5 0 <5 0 <5 0 Silver 100 50 <10 <10 <10 <10 Thallium 2 1 <0 50 <0 50 <0 50 <0 50 Tin 17.000 8 500 <100 <100 <100 <:100 Uranium 30 41 8 32 0 693 31 8 60 2 57 4 18 5 571 19 0 561 569 55 6 57 Vanadium 60 30 <15 <15 <15 <15 IZinc 5.000 2.500 <10 <10 <10 <10 1 Radiologics (oCi/L) iGross AlDha 15 1 4 69 1 no results 1 *3 0 (+/ 0 2) 1 *2 7 (+/ 0 2) 1 3 3 (+/ 0 2) 1 3 9 (+/ 0 7) I 1 I *2 7(+/ 0 4) 1 1 2 2(+/-0 2) VOC (ug/L) Acetone 700 350 <20 <20 <20 <20 <20 <20 Benzene 5 25 <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 Tetrachlonde 5 5 <1 0 <1 0 <1 0 <1 0 <1 0 <1 0 Chloroform 70 70 800 730 1200 390 1,900 730 300 1,000 1.300 440 1 200 1,400 Chloromethane 30 30 <1 0 <1 0 <1 0 <1 0 <1 0 <1 0 Dichloromethane 5 5 <1 0 10 14 31 20 7 24 10 79 26 89 11 Naohthalene 100 50 <1 0 <1 0 <20 <20 <20 <20 Tetrahydrofuran (THF) 46 23 <1 0 <1 0 <1 0 <1 0 <1 0 <1 0 Toluene 1 000 500 <1 0 <1 0 <20 <20 <20 <20 Xvlenes (total) 10,000 5,000 1 <1 0 <1 0 <1 0 <1 0 <1 0 <1 0 Others Field pH (S U ) 65 85 6 74 8 5 6 83 6 06 6 89 622 643 6 52 6 35 6 07 6 71 6 82 6 75 7 10 Fluonde (mo/L) 4 2 0 25 0 26 0 27 0 24 IChlonde (mg/L) 58 31 52 59 64 64 54 39 64 60 66 61 55 62 Sulfate (mg/L) 2.082 06 1.780 1.850 1.950 2,070 TDS (mo/L) 3,284 19 3.100 3,270 3,140 3.310 3.140 3,020 3.270 3,190 3,200 3.190 3.220 3.160 General Inoraanics Listed in Part 1 E 1 (c)(2)(ii) Carbonate (mg/L) <1 0 <1 0 <1 0 <1 0 iBicarbonate (mg/L) 418 414 397 376 ISodium (mg/L) 174 200 222 169 Potassium (mg/L) 11 2 11 6 107 109 Maonesium (mg/L) 168 163 159 165 Calaum (mg/L) 511 519 482 519 iTotal anions (meq/L) 45 7 47 2 48 8 51 IjTotal cations (meo/L) 47 2 48 3 47 1 47 1 Concentrations highlighted and In bold exceed tha Site Ground Water C>>mplaince Limit (GWCL) (a) = Monthly accelerated monitonng event MW-27 GWQS GWCL MW-27 (Semi-Annual Monitonng) Contaminant (Class III) 1st Qtr 2011 2nd Qtr 2011 3rd Qtr 2011 4th Qtr 2011 Jan - March 2/9/2011 Apnl - June 4/5/2011 <^'july - Sept 8/8/2011 Oct - Dec 10/5/2011 Parameters Listed in Table 2 Nutnents (mg/L) Ammonia (as N) 25 125 <0 05 No Result Nitrate + Nitnte (as N) 10 56 60 64 60 63 Heaw Metals (pg/L) Arsenic 50 25 <5 0 <5 0 Beryllium 4 2 <0 50 <0 50 Cadmium 5 25 <0 50 <0 50 Chromium 100 50 <25 <25 Cobalt 730 365 <10 <10 Copper 1.300 650 <10 <10 Iron 11,000 5,500 <30 <30 Lead 15 75 <1 0 <1 0 Manganese 800 400 <10 <10 Mercury 2 1 <0 50 <0 50 Molybdenum 40 20 <10 <10 Nickel 100 50 <20 <20 Selenium 50 25 122 13 Silver 100 50 <10 <10 Thallium 2 1 <0 50 <0 50 Tin 17,000 8,500 <100 <100 Uranium 30 34 30 1 28 7 Vanadium 60 30 <15 <15 Zinc 5,000 2,500 <10 <10 Radiologics (pCi/L) Gross Alpha 15 2 *0 7(+/-0 1) *1 1 (+/-0 2) *0 8 (+/- 0 2) 1 5 (+/- 0 5) VOC (ug/L) Acetone 700 350 <20 <20 Benzene 5 25 <1 0 <1 0 2-Butanone (MEK) 4,000 2.000 <20 <20 Carbon Tetrachlonde 5 25 <1 0 <1 0 Chloroform 70 35 <1 0 <1 0 Chloromethane 30 15 <1 0 <1 0 Dichloromethane 5 25 <1 0 <1 0 Naphthalene 100 50 <1 0 <1 0 Tetrahydrofuran (THF) 46 23 <1 0 <1 0 Toluene 1,000 500 <1 0 <1 0 Xylenes (total) 10,000 5,000 <1 0 <1 0 Others Field pH (S U ) 65-85 65-85 6 71 6 58 6 37 7 16 Fluonde (mg/L) 4 0 85 0 61 0 69 Chlonde (mg/L) 38 46 43 43 44 Sulfate (mg/L) 462 455 442 424 456 TDS (mg/L) 1,075 1.090 1.190 1.090 1.110 General Inorganics Listed n Part 1 E 1 (c)(2)(ii) Carbonate (mg/L) <1 0 <1 0 Bicarbonate (mg/L) 461 424 Sodium (mg/L) 71 7 61 5 Potassium (mg/L) 4 1 4 Magnesium (mg/L) 74 9 76 7 Calcium (mg/L) 173 177 Total anions (meq/L) 185 182 Total cations (meq/L) 180 179 Note Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL) (a) = Quarterly accelerated monitonng event MW-28 GWQS GWCL MW-28 (Semi-Annual Monitonng) Contaminant (Class 111) 1st Qtr 2011 '^'Jan - March 2nd Qtr 2011 Apnl - June 3rd Qtr 2011 '^'juIy-Sept 4th Qtr 2011 Oct - Dec 2/14/2011 4/11/2011 (VOCs Collected 4/18/2011) 8/8/2011 10/5/2011 Parameters Listed in Table 2 Nutnents (mg/L) Ammonia (as N) 25 125 <0 05 No Result Nitrate + Nitnte (as N) 10 5 02 02 Heaw Metals (gg/L) Arsenic 50 21 11 1 109 Beryllium 4 2 <0 50 <0 50 Cadmium 5 52 4 13 3 99 Chromium 100 50 <25 <25 Cobalt 730 47 37 30 Copper 1 300 650 <10 <10 Iron 11.000 299 <30 <30 Lead 15 75 <1 0 <1 0 Manganese 800 1.837 1,690 1.540 Mercury 2 1 <0 50 <0 50 Molybdenum 40 20 <10 <0 50 Nickel 100 50 27 39 Selenium 50 11 1 68 <5 0 Silver 100 50 <10 <10 Thallium 2 1 0 87 0 91 Tin 17 000 8,500 <100 <100 Uranium 30 49 3 29 319 Vanadium 60 30 <15 <15 Zinc 5,000 83 45 40 Radiologics (pCi/L) Gross Alpha 15 2 42 *0 8 (+/- 0 2) 1 4 (+/- 0 4) VOC (uo/L) Acetone 700 350 <20 <20 Benzene 5 25 <1 0 <1 0 2-Butanone (MEK) 4,000 2,000 <20 <20 Carbon Tetrachlonde 5 25 <1 0 <1 0 Chlorofonn 70 35 <1 0 <1 0 Chlonamethane 30 46 <1 0 <1 0 Dichloromethane 5 25 <1 0 <1 0 Naphthalene 100 50 <1 0 <1 0 Tetrahydrofuran (THF) 46 23 <1 0 <1 0 Toluene 1.000 500 <1 0 <1 0 Xylenes (total) 10 000 5,000 <1 0 <1 0 Others Field pH (S U ) 65-85 6 1-85 570 599 577 6 07 Fluonde (mg/L) 4 0 73 0 59 06 Chlonde (mg/L) 105 114 109 105 143 Sulfate (mg/L) 2,533 2.090 2.340 TDS (mg/L) 3,852 3.690 3,610 General Inorganics Listed in Part 1 E 1 (c)(2)(ii) Carbonate (mg/L) <1 0 <1 0 Bicarbonate (mg/L) 155 146 Sodium (mg/L) 310 270 Potassium (mg/L) 11 9 11 1 Magnesium (mg/L) 167 167 Calcium (mg/L) 513 505 Total anions (meq/L) 49 1 55 2 Total cations (meo/L) 531 51 Note Concentrations highlighted and in bold exceed the Site Ground Water Complaince Limit (GWCL) (a) = Quarteriy accelerated monitonng event MW-29 GWQS GWCL MW-29 (Semi-Annual Monitonng) Contaminant (Class III) 1st Qtr 2011 2nd Qtr 2011 3rd Qtr 2010 4th Qtr 2011 <^'jan - March Apnl - June '^'July - Sept Oct - Dec NA 4/5/2011 8/9/2011 10/5/2011 Parameters Listed in Table 2 Nutnents (mg/L) Ammonia (as N) 25 1 3 0 66 05 Nitrate + Nitnte (as N) 10 5 <0 1 <0 1 Heavy Metals (pg/L) Arsenic 50 25 80 <5 0 Beryllium 4 2 O <0 50 <0 50 Cadmium 5 25 O <0 50 <0 50 Chromium 100 50 T3 C <25 <25 Cobalt 730 365 CM <10 <10 Copper 1.300 650 C 3 <10 <10 Iron 11.000 1.869 CO 3.010 1.080 1.220 Lead 15 75 fl) <1 0 <1 0 Manganese 800 5.624 a r a m i 4,900 4,800 Mercury 2 1 a r a m i <0 50 0 61 Molybdenum 40 20 Q. <10 <10 Nickel 100 50 0) <20 <20 Selenium 50 25 CO m <5 0 <5 0 Silver 100 50 \c c e h <10 <10 Thallium 2 1 2 \c c e h <0 50 1 08 Tin 17,000 8,500 o <100 <100 Uranium 30 15 z 127 11 7 Vanadium 60 30 <15 <15 Zinc 5,000 30 11 <10 Radiologics (pCi/L) Gross Alpha 15 2 *1 0 (+/- 0 2) 1 5 (+/- 0 5) VOC (ug/L) Acetone 700 350 <20 <20 Benzene 5 25 <1 0 <1 0 2-Butanone (MEK) 4,000 2 000 <20 <20 Carbon Tetrachlonde 5 25 <1 0 <1 0 Chlorofomn 70 35 <1 0 <1 0 Chloromethane 30 15 <1 0 <1 0 Dichloromethane 5 25 <1 0 <1 0 Naphthalene 100 50 <1 0 <1 0 Tetrahydrofuran (THF) 46 23 <1 0 <1 0 Toluene 1,000 500 <1 0 <1 0 Xylenes (total) 10,000 5,000 <1 0 <1 0 Others Field pH (S U ) 65-85 6 46 - 8 5 6 45 6 20 6 51 Fluonde (mg/L) 4 1 1 0 68 0 79 Chlonde (mg/L) 41 38 37 Sulfate (mg/L) 2.946 2,600 2.850 TDS (mq/L) 4,400 4,080 4,280 General Inorganics Listed n Part 1 E 1 (c)(2){ii) Carbonate (mg/L) <1 0 <1 0 Bicarbonate (mg/L) 351 327 Sodium (mg/L) 496 435 Potassium (mg/L) 173 167 Magnesium (mg/L) 213 213 Calcium (mg/L) 482 476 Total anions (meq/L) 60 9 65 8 Total cations (meq/L) 63 7 60 6 Note Concentrations highlighted and in bold exceed the Site Ground Water Complaince Umit (GWCL) (a) = Quarteriy accelerated monitonng event C^taminam GWQS GWCL (Class II) MW 30 (Quaneriv Monitonng) C^taminam GWQS GWCL (Class II) January '"Monthly AccI 1/10/2011 1st Qtr 2011 Jan March 2/1/2011 March '"Monthly AccI 3/14/2011 2nd Or 2011 Apnl June 4/11/2011 May '"Monthly AccI 5/10/2011 June '"Monthly AccI 6/20/2011 July '"Monthly AccI 7/5/2011 Smar 2011 Julv Sept 8/3/2011 September '"Monthly Acd 9/7/2011 4th Qtr 2011 Oa Dec 10/4/2011 November '"Monthly Acd 11/8/2011 Decemt»r '"MonlhlvAcd 12/12/2011 Parameters Listed in T able 2 Nutnents (mo/L) Ammonia (as N) 25 014 0 05 <0 05 <0 05 No Resuli Nitrate + Nitnte (as N) 10 25 15 16 0 17 0 16 16 17 17 14 16 1« 16 16 Heaw Metals (uo/L) Arsenic 50 12 5 <5 0 <5 0 <5 0 <5 0 Beryllium 4 1 <0 50 <0 50 <0 50 <0 50 Cadmium 5 1 25 <0 50 <0 50 <0 50 <0 50 Chromium 100 25 <25 <25 <25 <25 Cobalt 730 182 5 <10 <10 <10 <10 C^Doer 1 300 325 <10 <10 <10 <10 Iron 11 000 2 750 67 68 38 73 Lead 15 3 75 <1 0 <1 0 <1 0 <1 0 Manganese 800 61 38 39 27 36 Mercury 2 OS <0 50 <0 50 <0 50 <0 50 Molytxlenum 40 10 <10 <10 <10 <10 Nickel 100 25 <20 <20 <20 <20 Selenium 50 34 362 347 35 444 383 387 32 4 397 32 4 36 6 36 8 38 0 Silver 100 25 <10 <10 <10 <10 Thallium 2 05 <0 50 <0 50 <0 50 <0 50 Tin 17 000 4 250 <100 <100 <100 <100 Uranium 30 8 32 5 97 6 49 8 00 983 Vanadium 60 15 <15 <15 <15 <15 Zinc 5,000 1,250 <10 <10 <10 <10 RadioloQics (DCI/L) Gross Aloha 15 1 3 75 1 1 02(+/ 0 7)l 1 04(+/ 02) 1 1 1 1 1 1 (+/ 0 7) 1 1 0 7 (+/ 0 4) 1 VOC(uan.) Acetone 700 175 <20 <20 <20 <20 Benzene 5 1 25 <1 0 <1 0 <1 0 <1 0 2 Butanone (MEK) 4 000 1 000 <20 <20 <20 <20 C^itxin Tetrachlonde 5 1 25 <1 0 <1 0 <1 0 <1 0 Chloroform 70 175 <1 0 <1 0 <1 0 <1 0 Chloromethane 30 75 <1 0 <1 0 <1 0 <1 0 Drchloromethane 5 1 25 <1 0 <1 0 <1 0 <1 0 Naphthalene 100 25 <1 0 <1 0 <1 0 <1 0 Tetrahydrofuran (THF) 46 11 5 <1 0 <1 0 <1 0 <1 0 Toluene 1 000 250 <1 0 <1 0 <1 0 <1 0 Xvlenes (total) 10,000 2,500 <1 0 <1 0 <1 0 <1 0 Others Field pH (S U ) 65 85 65 85 6 65 6 95 7 08 6 81 6 53 8S6 6 67 6 60 6 80 6 50 7 14 7 14 Fluonde (mq/L) 4 0 51 034 034 0 33 0 37 Chlonde (mg/L) 128 134 134 128 127 127 126 145 129 122 124 Sullate (mo/L) 972 796 746 768 759 TDS (mo/L) 1.918 1.530 1.650 1.550 1.550 General Inoraanics Listed in Part 1 E 1 (cX2Xii) Carbonate (mo/L) <1 0 <1 0 <1 0 <1 0 Bicartxinata (mo/L) 185 187 176 175 SexJium (mo/L) 102 107 102 931 Potassium (mg/L) 656 72 68 67 Maqnesium (mg/L) 67 5 67 9 66 7 68 3 Olcium (mg/L) 263 269 263 266 Total anions (meo/L) 24 6 23 6 23 4 23 5 Total cations (meo/L) 23 3 23 9 23 2 231 Nats (a) • Monlhlv accelerated monitortnq event I the SIta Oioind Comolalncs Umit (OWCL) Contaminant GWQS GWCL (Class III) MW 31 (Quart arlv Monitonnq) 1 Contaminant GWQS GWCL (Class III) January '"Monthly AccI 1/10/2011 1st Qtr 2011 Jan March 2/1/2011 March '"Monthly Acd 3/14/2011 2nd C3tr 2011 Apnl June 4/1/2011 May '"Monthly Acd 5/21/2010 June '"Monthly Acd 6/20/2011 July '"Monthlv Acd 7/5/2011 3rdar 2011 Julv Seot 8/2/2011 September '"Monthly Acd 9/6/2011 4th ar 2011 Od Dec 10/3/2011 November '"Monthly Acd 11/8/2011 December 1 '"Monthly Acd 12/12/2011 Parameters Listed in T able 2 Nutnents (mo/L) Ammonia (as N) 25 12 5 <0 05 <0 05 <0 05 No Result Nitrate * Nitnte (as N) 10 5 19 21 22 21 20 22 22 20 21 21 21 21 Heaw Metals (uo/L) Arsenic 50 25 <5 0 <5 0 <5 0 <5 0 Bervliium 4 2 <0 50 <0 50 <0 50 <0 50 C^mium 5 25 <0 50 <0 50 <0 50 <0 50 Chromium 100 50 <25 <25 <25 <25 Cobalt 730 365 <10 <10 <10 <10 Copper 1 300 650 <10 <10 <10 <10 Iron 11 000 5 500 <30 <30 <30 35 Lead 15 75 <1 0 <1 0 <1 0 <1 0 Manganese 800 400 <10 <10 <10 <10 Mercury 2 1 <0 50 <0 50 <0 50 <0 50 Molytxlenum 40 20 <10 <10 <10 <10 Nickel 100 50 <20 <20 <20 <20 Selenium 50 71 64 6 65 2 66 2 68 8 Silver 100 50 <10 <10 <10 <10 Thallium 2 1 <0 50 <0 50 <0 50 <0 50 Tin 17 000 8 500 <100 <100 <100 <100 Uranium 30 91 5 77 6 81 7 68 8 87 Vanadium 60 30 <15 <15 <15 <15 Zinc 5,000 2,500 <10 <10 <10 <10 Radiolcxiics (DCI/L) Gross Aloha 15 1 75 1 |04(+/ 0 08)1 1 08(+/ 01) llll <05(+/ 06)l 1 09(+/ 04) 1 VOC(uQrt.) Acetone 700 350 <20 <20 <20 <20 Benzene 5 25 <1 0 <1 0 <1 0 <1 0 2 Butanone (MEK) 4 000 2 000 <20 <20 <20 <20 Cartxin Tetrachlonde 5 25 <1 0 <1 0 <1 0 <1 0 Chloroform 70 35 <1 0 <1 0 <1 0 <1 0 Chloromethane 30 6 1 <1 0 <1 0 <1 0 <1 0 Dichloromethane 5 25 <1 0 <1 0 <1 0 <1 0 Naphthalene 100 50 <1 0 <1 0 <1 0 <1 0 Telrahvdrofuran (THF) 46 23 <1 0 <1 0 <1 0 <1 0 Toluene 1 000 500 <1 0 <1 0 <1 0 <1 0 Xvlenes (total) 10,000 5,000 <1 0 <1 0 <1 0 <1 0 CMhers Field pH (S U ) 65 85 65 85 66 7 21 7 47 6 99 6 95 7 01 6 60 6 66 7 02 7 27 7 01 7 44 Fluonde (mq/L) 4 2 0 83 0 83 0 80 0 84 Chlonde (mg/L) 143 145 143 143 145 148 148 148 145 145 148 Sulfate (mg/L) 532 638 531 503 512 S40 532 537 541 539 852 530 TDS (mg/L) 1,320 1,240 1,220 1,250 1.370 1,290 1J30 1,280 1,300 1,300 1,320 1,290 1.330 General Inoraanics Listed in Part 1 E 1 (c)(2)(ii) Cartxinate (mo/L) <1 0 <1 0 <1 0 <1 0 Bicarbonate (mg/L) 211 213 199 202 Scxlium (mg/L) 91 6 95 95 3 85 5 Potassium (mg/L) 5 75 6 1 57 59 Magnesium (mg/L) 79 6 801 81 2 83 3 Calcium (mg/L) 168 172 172 177 Total anions (meg/L) 20 3 196 201 201 Total cations (meo/L) 191 194 196 196 i Ih* Sile Oround Water Camnlilnce Umll (OWCLl MW-32 GWQS GWCL MW-32 (Semi-Annual Monitoring) Contaminant (Class 111) 1st Qtr 2011 2nd Qtr 2011 3rd Qtr 2011 4th Qtr 2011 "'Jan - March April - June "'July-Sept Oct - Dec 2/9/2011 4/1/2011 8/30/2011 10/3/2011 Parameters Listed in Table 2 Nutrients (mq/L) Ammonia (as N) 25 1 17 0 68 05 Nitrate ••• Nitrite (as N) 10 5 <01 <0 1 Heaw Metals (uo/L) Arsenic 50 25 <5 0 <5 0 Beryllium 4 2 <0 50 <0 50 Cadmium 5 4 72 0 70 0 95 Chromium 100 50 <25 <25 Cobalt 730 75 21 40 36 Copper 1.300 650 <10 <10 Iron 11,000 14 060 6 400 80 Lead 15 75 <1 0 <1 0 Manqanese 800 5 594 90 5.030 5.050 Mercury 2 1 <0 50 <0 50 Molybdenum 40 20 <10 <10 Nickel 100 94 44 49 Selenium 50 25 <5 0 <5 0 Silver 100 50 <10 <10 Thallium 2 1 <0 50 <0 50 Tin 17 000 8.500 <100 <100 Uranium 30 5 26 2 08 0 58 Vanadium 60 30 <15 <15 Zinc 5,000 230 77 27 Radioloqics (pCi/L) Gross Alpha 15 3 33 *1 5 (+/- 0 2) *4 6(+/-0 3) •1 9 {+/- 0 3) 3 7 (+/- 0 7) VOC (uq/L) Acetone 700 350 <20 <20 Benzene 5 25 <1 0 <1 0 2-Butanone (MEK) 4,000 2 000 <20 <20 Carbon Tetrachlonde 5 25 <1 0 <1 0 Chloroform 70 35 <1 0 <1 0 Chloromethane 30 15 <1 0 <1 0 Dichloromethane 5 25 <1 0 <1 0 Naphthalene 100 50 <1 0 <1 0 Tetrahydrofuran (THF) 46 23 <1 0 <1 0 Toluene 1,000 500 <1 0 <1 0 Xvlenes (total) 10,000 5.000 <1 0 <1 0 Others Field pH (S U ) 65-85 64-85 6 01 615 62 636 Fluoride (mg/L) 4 2 0 17 0 22 Chloride (mg/L) 35 39 33 34 Sulfate (mq/L) 2,556 70 2,180 2.370 TDS (mq/L) 3,960 3,760 3,660 General Inorqanics Listed in Part 1 E 1 (c)(2)(ii) Cart)onate (mg/L) <1 0 <1 0 Bicarbonate (mg/L) 473 447 Sodium (mq/L) 246 210 Potassium (mg/L) 14 6 14 Magnesium (mg/L) 225 220 Calcium (mg/L) 529 513 Total anions (meg/L) 541 57 6 Total cations (meg/L) 56 1 53 2 C^ncentrabons highlighted and in bold exceed the Site Ground Water C^omplaince Limit (GWCL) (a) = Quarteriy accelerated monitonng event MW-34 GWQS Contaminant 1st Qtr 2011 2nd Qtr 2011 3rd Qtr 2011 4th Qtr 2011 Jan - March Apnl - June July - Sept Oct - Dec 2/16/2011 4/13/2011 Parameters Listed in Table 2 Nutnents (mg/L) Ammonia (as N) 25 <0 1 <0 05 Nitrate + Nitnte (as N) 10 03 03 Heavy Metals (uq/L) Arsenic 50 <5 0 <5 0 Beryllium 4 <0 50 <0 50 Cadmium 5 <0 50 <0 50 Chromium 100 <25 <25 Cobalt 730 <10 <10 Copper 1.300 <10 <10 Iron 11.000 32 282 a Lead 15 <1 0 <1 0 a Q Manganese 800 34 177 a> <D Mercury 2 <0 50 <0 50 a. P Q. Molybdenum 40 <10 <10 lo S a i lo S a i Nickel 100 <20 <20 lo S a i lo S a i Selenium 50 136 144 Silver 100 <10 <10 Thallium 2 0 73 <0 50 Tin 17,000 <10 <10 Uranium 30 23 7 24 8 Vanadium 60 <15 <15 Zinc 5,000 <10 11 Radiologics (pCi/L) Gross Alpha 15 *0 5(+/-0 1) *0 8 (+/- 0 2) VOC (uq/L) Acetone 700 <20 <20 Benzene 5 <1 0 <1 0 2-Butanone (MEK) 4,000 <20 <20 Carbon Tetrachlonde 5 <1 0 <1 0 Chloroform 70 <1 0 <1 0 Chloromethane 30 <1 0 <1 0 Dichloromethane 5 <1 0 <1 0 Naphthalene 100 <1 0 <1 0 Tetrahydrofuran (THF) 46 <1 0 <1 0 Toluene 1,000 1 1 <1 0 Xylenes (total) 10,000 1 4 <1 0 Others Field pH (S U ) 65-85 6 55 7 00 Fluonde (mg/L) 4 0 54 0 55 Chlonde (mg/L) 74 69 Sulfate (mq/L) 2,110 2,160 TDS (mg/L) 3,690 3.790 General Inorganics Listed in Part 1 E 1 (c)(2)(ii) Carbonate (mg/L) <1 0 <1 0 Bicarbonate (mg/L) 335 336 Sodium (mg/L) 394 420 Potassium (mg/L) 133 14 6 Magnesium (mg/L) 150 148 Calcium (mg/L) 505 512 Total anions (meq/L) 51 6 52 5 Total cations (meq/L) 55 0 56 3 Note Monitonng Well MW-34 is neither a POC or General Monitoring It is used strictly for head monitoring purposes Well GWQS GWCL Contaminant (Class II) 1st Qtr 2011 2ndC»r 2011 3rdC»r 2011 4th Qtr 2011 November December Jan-March April June July Sept 8/2/2011 Od Dec '"MontliWAcd '"Monthly Acd. 2/15/2011 4/12/2011 (Resampled 8^0^011 See Parameters Labeled R) 10/3/2011 11/8/2011 12/14/2012 Parameters Listed m T able 2 Nutnents (mo/L) Ammonia (as N) 25 625 0 06 01 005 No Result Nitrate + Nitnte (as N) 10 25 03 <01 <01 <01 Heaw Metals (ug/L) Arsenic 50 12 5 <50 <50 <50 R <50 Beryllium 4 1 <050 <050 <050 R <0 50 Cadmium 5 1 25 <050 <0 50 <050 R <0 50 Chromium 100 25 <25 <25 <25-R <25 C:obalt 730 182 5 <10 13 <10-R <10 CoDoei 1 300 325 <10 <10 <10-R <10 Iron 11 000 2,750 188 568 207 R 182 Lead 15 3 75 <1 0 <10 <1 0-R <10 Manganese 800 200 24« S80 " 2674» ' 271 2U 247 Mercury 2 05 <050 <050 <050-R <050 Molybdenum 40 10 <10 <10 <10-R <10 Nickel 100 25 <20 <20 26-R 23 Selenium 50 12 5 <50 <50 9 3.^^ 105 Silver 100 25 <10 <10 <10-R <10 Thallium 2 05 <050 <050 0S2-R 057 <050 063 Tm 17 000 4 250 <100 <100 <100-R <100 Uranium 30 75 12.7 1»9 18.3-R 201 24.0 23.6 Vanadaim 60 15 <15 <15 «!15-R <15 Zinc 5000 1.250 <10 <10 <10-R <10 Radiologics (pCi/L) Gross Alpha 15 3 75 2 6 (+/ 0 2) 4.4{+/>0S) 4$l*l OS) 4.7 (+/ 0 5) 4J(+/.0 7) VOC(uofl.) Acetone 700 175 <20 <20 <20 <20 Benzene 5 1 25 <1 0 <1 0 <1 0 <1 0 2 Butanone (MEK) 4 000 1,000 <20 <20 <20 <20 Cartxjn Tetrachkirkle 5 1 25 <1 0 <1 0 <1 0 <1 0 Chtorofomi 70 17 5 <1 0 <1 0 <1 0 <1 0 Chtoromethane 30 75 <1 0 <1 0 <1 0 <1 0 Dichloromethane 5 125 <10 <1 0 <1 0 <1 0 Naphthalene 100 25 <10 <1 0 <1 0 <1 0 Tetrahydrofuran (THF) 46 11 5 <10 <1 0 <1 0 <1 0 Toluene 1 000 250 <1 0 <10 <10 <1 0 Xylenes (total) 10,000 2.500 <1 0 <1 0 <10 <10 Others FeU pH (S U ) 65 85 717 660 ^ 6.24 6 61 6 50 Fluonde (mg/L) 4 1 0 32 0 38 0 37 0 37 Chlonde (mo/L) 41 64 59 61 Sulfate (mg/L) 1,140 2.190 2,330 2,400 TDS (man.) 2.200 3.830 3.720 3.750 General Inoraanics LEted nPartlE1(c)(2Mii) Cartx>nate (mo/L) <1 0 <1 0 <1 0 <10 Bicartxinate (mg/L) 266 410 394 385 Scxlrum (mg/L) 227 425 416-R 352 Potassium (mo/L) 77 11 8 11 6 R 11 0 Magnesium (man.) 866 150 155 R 149 Cakaum (mg/L) 289 522 524 R 502 Total antons (meo/L) 29 3 54 0 56 7 58 0 Total catnns (meo/L) 31 6 57 2 57 3 52 9 OV)rCLerorMW.35\»greealdurinalhsFetirusv1S 2011 Permit Modifk:«icn The QWCLS haw been eat d Iho tracUen of the OWOS (0 2S1 for Class 11 water under OWCLa cen be eetdilldiad ^ amrwal cT a Backoraund Repon for well hlW.35 (a) - Mcnttilv eccefcyited monltorinq event MW-36 Contaminant GWQS Contaminant GWQS 3rd Qtr 2011 July - Sept 8/9/2011 4th Qtr 2011 Oct - Dec 10/3/2011 Parameters Listed in Table 2 Nutnents (mg/L) Ammonia (as N) 25 <0 05 No Result Nitrate + Nitnte (as N) 10 02 02 Heavy Metals (pg/L) Arsenic 50 <5 0 <5 0 Beryllium 4 <0 50 <0 50 Cadmium 5 <0 50 <0 50 Chromium 100 <25 <25 Cobalt 730 <10 <10 Copper 1,300 <10 <10 Iron 11.000 282 <30 Lead 15 <1 0 <1 0 Manganese 800 <10 <10 Mercury 2 <0 50 <0 50 Molybdenum 40 <10 <10 Nickel 100 <20 <20 Selenium 50 229 254 Silver 100 <10 <10 Thallium 2 <0 50 1 43 Tin 17,000 <10 <100 Uranium 30 23 9 24 0 Vanadium 60 <15 <15 Zinc 5,000 35 <10 Radiologics (pCi/L) Gross Alpha 15 *0 3(+/-0 1) *1 4 (+/- 0 4) VOC (gg/L) Acetone 700 <20 <20 Benzene 5 <1 0 <1 0 2-Butanone (MEK) 4,000 <20 <20 Carbon Tetrachlonde 5 <1 0 <1 0 Chloroform 70 <1 0 <1 0 Chloromethane 30 <1 0 <1 0 Dichloromethane 5 <1 0 <1 0 Naphthalene 100 <1 0 <1 0 Tetrahydrofuran (THF) 46 1 00 <1 0 Toluene 1,000 <1 0 <1 0 Xylenes (total) 10,000 <1 0 <1 0 Others Field pH (S U ) 65-85 6 58 6 92 Fluonde (mg/L) 4 0 33 0 32 Chlonde (mg/L) 54 56 Sulfate (mg/L) 2,740 2.860 TDS (mg/L) 4,320 4.270 General Inorganics Listed in Part 1 E 1 (c)(2)(ii) Carbonate (mg/L) <1 0 <1 0 Bicarbonate (mg/L) 340 338 Sodium (mg/L) 716 628 Potassium (mg/L) 98 98 Magnesium (mg/L) 136 137 Calcium (mg/L) 445 442 Total anions (meq/L) 64 2 66 7 Total cations (meq/L) 64 8 60 9 Note GWCL's have not been developed or approved for MW-36, Well was mstalled m 2011, As-Built approved by DRC onl 1/14/2011 MW-37 Contaminant GWQS Contaminant GWQS 3rd Qtr 2011 July - Sept 8/11/2011 4th Qtr 2011 Oct - Dec 10/19/2011 Parameters Listed in Table 2 Nutnents (mg/L) Ammonia (as N) 25 <0 05 No Result Nitrate + Nitnte (as N) 10 23 1 7 Heavy Metals (pg/L) Arsenic 50 <5 0 <5 0 Beryllium 4 <0 50 <0 50 Cadmium 5 <0 50 <0 50 Chromium 100 <25 <25 Cobalt 730 <10 <10 Copper 1,300 <10 <10 Iron 11,000 <30 <30 Lead 15 <1 0 <1 0 Manganese 800 115 29 Mercury 2 <0 50 <0 50 Molybdenum 40 <10 <10 Nickel 100 <20 <20 Selenium 50 <5 0 52 Silver 100 <10 <10 Thallium 2 <0 50 <0 50 Tin 17.000 <10 <10 Uranium 30 18 1 156 Vanadium 60 <15 <15 Zinc 5,000 45 21 Radiologics (pCi/L) Gross Alpha 15 *0 6(+/-0 1) *0 9 (+/- 0 3) VOC (ug/L) Acetone 700 <20 <20 Benzene 5 <1 0 <1 0 2-Butanone (MEK) 4.000 <20 <20 Carbon Tetrachlonde 5 <1 0 <1 0 Chloroform 70 <1 0 <1 0 Chloromethane 30 <1 0 <1 0 Dichloromethane 5 <1 0 <1 0 Naphthalene 100 <1 0 <1 0 Tetrahydrofuran (THF) 46 1 00 <1 0 Toluene 1.000 <1 0 <1 0 Xylenes (total) 10,000 <1 0 1 0 Others Field pH (S U ) 65-85 6 86 6 89 Fluonde (mg/L) 4 0 30 0 23 Chlonde (mg/L) 55 50 Sulfate (mg/L) 2,440 2.620 TDS (mg/L) 3.820 3.980 General Inorganics Listed in Part 1 E 1 (c)(2)(ii) Carbonate (mg/L) <1 0 <1 0 Bicarbonate (mg/L) 291 261 Sodium (mg/L) 556 556 Potassium (mg/L) 139 142 Magnesium (mg/L) 129 133 Calcium (mg/L) 457 481 Total anions (meq/L) 57 3 60 3 Total cations (meq/L) 58 0 59 5 Note GWCL's have not been developed or approved for MW-37, Well was installed in 2011, As-Built approved by DRC onl 1/14/2011 Attachment 2 Energy Laboratories Casper BLI Certification state of Utah Department of Health Environmental Laboratory Certification Program Certification is hereby granted to Energy Laboratories Incorporated - Casper 2393 Salt Creek Highway Casper, WY 82601 Has conformed with the 2009 TNI Standard Scope of accreditiation is limited to the State of Utah Accredited Fields of Accreditiation Which accompanies this Certificate EPA Number WY00002 Expiration Date 6/30/2013 Certificate Number WY000022012-3 .r^^^^., ' Rbbyn M. Atkinson, Ph D. HCLD Director, Unified State Laboratones Public Health ^ ^ UTAH DEPARTMENT OF Continued accredited status depends on successful ongoing parttcitpation in the program 3| ^ HEALTH State of Utah Gary R Herbert Governor Gregory S Bell Lieutenant Governor Utah Department of Health W David Patron Ph D Executive Director Disease Control and Prevention Robyn M Atkinson, Ph D, HCLD Director Unified State Laboratories Public Health Bureau of Laboratory Improvement David B Mendenhall, MPA, MT (ASCP) Bureau Director EPA Number: WY00002 Attachment to Certificate Number: WY000022012-3 Pagel oflO Energy Laboratories Incorporated - Casper Start Date Expires AB Program/Matrix: CWA (Non Potable Water) Method EPA 1664A (HEM) Oil & Grease 7/1/2012 6/30/2013 FL Total recoverable petroleum hydrocarbons (TRPH) 7/1/2012 6/30/2013 FL Method EPA 200.7 Aluminum 7/1/2012 6/30/2013 FL Antimony 7/1/2012 6/30/2013 FL Arsenic 7/1/2012 6/30/2013 FL Banum 7/1/2012 6/30/2013 FL Beryllium 7/1/2012 6/30/2013 FL Boron 7/1/2012 6/30/2013 FL Cadmium 7/1/2012 6/30/2013 FL Calcium 7/1/2012 6/30/2013 FL Chromium 7/1/2012 6/30/2013 FL Cobalt 7/1/2012 6/30/2013 FL Copper 7/1/2012 6/30/2013 FL Iron 7/1/2012 6/30/2013 FL Lead 7/1/2012 6/30/2013 FL Magnesium 7/1/2012 6/30/2013 FL Manganese 7/1/2012 6/30/2013 FL Molybdenum 7/1/2012 6/30/2013 FL Nickel 7/1/2012 6/30/2013 FL Phosphorus, total 7/1/2012 6/30/2013 FL Potassium 7/1/2012 6/30/2013 FL Selenium 7/1/2012 6/30/2013 FL Silica as Si02 7/1/2012 6/30/2013 FL Silver 7/1/2012 6/30/2013 FL Sodium 7/1/2012 6/30/2013 FL Strontium 7/1/2012 6/30/2013 FL Thallium 7/1/2012 6/30/2013 FL Titanium 7/1/2012 6/30/2013 FL Vanadium 7/1/2012 6/30/2013 FL Zinc 7/1/2012 6/30/2013 FL Method EPA 200.8 Aluminum 7/1/2012 6/30/2013 FL Antimony 7/1/2012 6/30/2013 FL Arsenic 7/1/2012 6/30/2013 FL ^kim 4431 South 2700 West • Taylorsville, UT 84119 • phone (801) 965-2400 •fax (801)965-2544 ^ ^AH DEPARTMENT OF HEALTH www health utah gov/els/labimp/ EPA Number: WY00002 Attachment to Certificate Number: WY000022012-3 Page 2 of 10 Energy Laboratones Incorporated - Casper Start Date Expires AB Program/Matrix: CWA (Non Potable Water) Barium 7/1/2012 6/30/2013 FL Beryllium 7/1/2012 6/30/2013 FL Boron 7/1/2012 6/30/2013 FL Cadmium 7/1/2012 6/30/2013 FL Calcium 7/1/2012 6/30/2013 FL Chromium 7/1/2012 6/30/2013 FL Cobalt 7/1/2012 6/30/2013 FL Copper 7/1/2012 6/30/2013 FL Lead 7/1/2012 6/30/2013 FL Manganese 7/1/2012 6/30/2013 FL Mercury 7/1/2012 6/30/2013 FL Molybdenum 7/1/2012 6/30/2013 FL Nickel 7/1/2012 6/30/2013 FL Potassium 7/1/2012 6/30/2013 FL Selenium 7/1/2012 6/30/2013 FL Silver 7/1/2012 6/30/2013 FL Sodium 7/1/2012 6/30/2013 FL Strontium 7/1/2012 6/30/2013 FL Thallium 7/1/2012 6/30/2013 FL Thonum 7/1/2012 6/30/2013 FL Tin 7/1/2012 6/30/2013 FL Titanium 7/1/2012 6/30/2013 FL Uranium 7/1/2012 6/30/2013 FL Vanadium 7/1/2012 6/30/2013 FL Zinc 7/1/2012 6/30/2013 FL Method EPA 2451 Mercury 7/1/2012 6/30/2013 FL Method EPA 245.7 Mercury 7/1/2012 6/30/2013 FL Method EPA 300.0 Bromide 7/1/2012 6/30/2013 FL Chloride 7/1/2012 6/30/2013 FL Fluonde 7/1/2012 6/30/2013 FL Nitrate as N 7/1/2012 6/30/2013 FL Nitrate-nitnte 7/1/2012 6/30/2013 FL Nitnte as N 7/1/2012 6/30/2013 FL Orthophosphate as P 7/1/2012 6/30/2013 FL Sulfate 7/1/2012 6/30/2013 FL Method EPA 353.2 Nitrate-nitnte 7/1/2012 6/30/2013 FL Method EPA 900 Gross-alpha 7/1/2012 6/30/2013 FL Gross-beta 7/1/2012 6/30/2013 FL Method EPA 903 Radium-226 7/1/2012 6/30/2013 FL Method HACH 8000 Chemical oxygen demand 7/1/2012 6/30/2013 FL UTAH DEPARTMENT OF r HEALTH 4431 South 2700 West • Taylorsville, UT 84119 • phone (801) 965-2400 • fax (801) 965-2544 wvwv health Utah gov/els/labimp/ EPA Number: WY00002 Attachment to Certificate Number: Energy Laboratones Incorporated - Casper WY000022012-3 P^g^ ^ of lo Start Date Expires AB Program/Matrix: CWA (Non Potable Water) Method SM2320B Alkalinity as CaC03 Method SM2340B Total hardness as CaC03 Method SM2510B Conductivity Method SM2540C Residue-filterable (TDS) Method SM2540D Residue-nonfilterable (TSS) Method SM3112B Mercury Method SM3114B Arsenic Selenium Method SM4500-CI~B Chlonde Method SM4500-F~C Fluonde Method SM4500-H+B pH Method SM4500-NH3G Ammonia as N Method SM4500-NO2"B Nitnte as N Method SW4500-SO4"E Sulfate Method SM5310C Total organic carbon Method SM7500-UC Uranium 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL UTAH DEPARTMENT OB HEALTH 4431 South 2700 West • Taylorsville, UT 84119 • phone (801) 965-2400 • fax (801) 965-2644 www health utah gov/els/labimp/ EPA Number: WY00002 Attachment to Certificate Number: Energy Laboratones Incorporated - Casper WY000022012-3 P^ge 4 of i o Start Date Expires AB Program/Matrix: RCRA (Non Potable Water) Method EPA1664A Total recoverable petroleum hydrocarbons (TRPH) 7/1/2012 6/30/2013 FL Method EPA 1664A (HEM) Oil & Grease 7/1/2012 6/30/2013 FL Method EPA 301 OA Preparation/Extraction 7/1/2012 6/30/2013 FL Method EPA3510C Preparation/Extraction 7/1/2012 6/30/2013 FL Method EPA 5030 Preparation/Extraction 7/1/2012 6/30/2013 FL Method EPA6010A Arsenic 7/1/2012 6/30/2013 FL Method EPA 601 OB Arsenic 7/1/2012 6/30/2013 FL Banum 7/1/2012 6/30/2013 FL Cadmium 7/1/2012 6/30/2013 FL Chromium 7/1/2012 6/30/2013 FL Lead 7/1/2012 6/30/2013 FL Selenium 7/1/2012 6/30/2013 FL Silver 7/1/2012 6/30/2013 FL Method EPA 6020 Arsenic 7/1/2012 6/30/2013 FL Banum 7/1/2012 6/30/2013 FL Cadmium 7/1/2012 6/30/2013 FL Chromium 7/1/2012 6/30/2013 FL Lead 7/1/2012 6/30/2013 FL Mercury 7/1/2012 6/30/2013 FL Selenium 7/1/2012 6/30/2013 FL Silica as Si02 7/1/2012 6/30/2013 FL Silver 7/1/2012 6/30/2013 FL Method EPA7470A Mercury 7/1/2012 6/30/2013 FL Method EPA 8015B Diesel range organics (DRO) 7/1/2012 6/30/2013 FL Gasoline range organics (GRO) 7/1/2012 6/30/2013 FL Method EPA8260B 1,1,1,2-Tetrachloroethane 7/1/2012 6/30/2013 FL 1,1,1-Tnch loroethane 7/1/2012 6/30/2013 FL 1,1,2,2-Tetrachloroethane 7/1/2012 6/30/2013 FL 1.1.2-Tnchloroethane 7/1/2012 6/30/2013 FL 1,1-Dichloroethane 7/1/2012 6/30/2013 FL 1,1-Dichloroethylene 7/1/2012 6/30/2013 FL 1,1-Dichloropropene 7/1/2012 6/30/2013 FL 1,2,3-Tnchlorobenzene 7/1/2012 6/30/2013 FL 1,2,3-Trichloropropane 7/1/2012 6/30/2013 FL 1,2,4-TnchlorGbenzene 7/1/2012 6/30/2013 FL UTAH DEPARTMENT OF r HEALTH 4431 South 2700 West • Taylorsville. UT 84119 • phone (801) 965-2400 • fax (801) 966-2544 www health Utah gov/els/labimp/ EPA Number: WY00002 Attachment to Certificate Number: Energy Laboratones Incorporated - Casper WY000D22012-3 Start Date Page 5 of 10 Expires AB Program/Matrix: RCRA (Non Potable Water) 1,2,4-Tnmethylbenzene 7/1/2012 6/30/2013 FL 1,2-Dibromo-3-chloropropane (DBCP) 7/1/2012 6/30/2013 FL 1,2-Dibromoethane (EDB, Ethylene dibromide) 7/1/2012 6/30/2013 FL 1,2-Dichlorobenzene (o-Dichlorobenzene) 7/1/2012 6/30/2013 FL 1,2-Dichloroethane (Ethylene dichloride) 7/1/2012 6/30/2013 FL 1,2-Dichloropropane 7/1/2012 6/30/2013 FL 1,3,5-Tnmethylbenzene 7/1/2012 6/30/2013 FL 1,3-Dichlorobenzene 7/1/2012 6/30/2013 FL 1,3-Dichloropropane 7/1/2012 6/30/2013 FL 1,4-Dichlorobenzene 7/1/2012 6/30/2013 FL 1-Chlorohexane 7/1/2012 6/30/2013 FL 2,2-Dichloropropane 7/1/2012 6/30/2013 FL 2-Butanone (Methyl ethyl ketone, MEK) 7/1/2012 6/30/2013 FL 2-Chloroethyl vinyl ether 7/1/2012 6/30/2013 FL 2-Chlorotoluene 7/1/2012 6/30/2013 FL 2-Hexanone 7/1/2012 6/30/2013 FL 4-Chlorotoluene 7/1/2012 6/30/2013 FL 4-Methyl-2-pentanone (MIBK) 7/1/2012 6/30/2013 FL Acetone 7/1/2012 6/30/2013 FL Acetonitnle 7/1/2012 6/30/2013 FL Acrolein (Propenal) 7/1/2012 6/30/2013 FL Acrylonitnle 7/1/2012 6/30/2013 FL Allyl chloride (3-Chloropropene) 7/1/2012 6/30/2013 FL Benzene 7/1/2012 6/30/2013 FL Bromobenzene 7/1/2012 6/30/2013 FL Bromochloromethane 7/1/2012 6/30/2013 FL Bromodichloromethane 7/1/2012 6/30/2013 FL Bromoform 7/1/2012 6/30/2013 FL Carbon disulfide 7/1/2012 6/30/2013 FL Carbon tetrachlonde 7/1/2012 6/30/2013 FL Chlorobenzene 7/1/2012 6/30/2013 FL Chlorodibromomethane 7/1/2012 6/30/2013 FL Chloroethane (Ethyl chlonde) 7/1/2012 6/30/2013 FL Chloroform 7/1/2012 6/30/2013 FL Chloroprene (2-Chloro-1,3-butadiene) 7/1/2012 6/30/2013 FL cis-1,2-Dichloroethylene 7/1/2012 6/30/2013 FL cis-1,3-Dichloropropene 7/1/2012 6/30/2013 FL Dibromomethane (Methylene bromide) 7/1/2012 6/30/2013 FL Dichlorodifluoromethane (Freon-12) 7/1/2012 6/30/2013 FL Diethyl ether 7/1/2012 6/30/2013 FL Ethyl acetate 7/1/2012 6/30/2013 FL Ethyl methacrylate 7/1/2012 6/30/2013 FL Ethylbenzene 7/1/2012 6/30/2013 FL Hexachlorobutadlene 7/1/2012 6/30/2013 FL lodomethane (Methyl iodide) 7/1/2012 6/30/2013 FL Isobutyl alcohol (2-Methyl-1-propanol) 7/1/2012 6/30/2013 FL Isopropylbenzene 7/1/2012 6/30/2013 FL Methyl bromide (Bromomethane) 7/1/2012 6/30/2013 FL Methyl chloride (Chloromethane) 7/1/2012 6/30/2013 FL UTAH DEPARTMENT OF ^ HEALTH 4431 South 2700 West • Taylorsville, UT 84119 • phone (801) 965-2400 • fax (801) 965-2544 www health utah gov/els/labimp/ EPA Number: WY00002 Attachment to Certificate Number: Energy Laboratones Incorporated - Casper WY000022012-3 Page 6 of lo start Date Expires AB Program/Matrix: RCRA (Non Potable Water) Methyl tert-butyl ether (MTBE) 7/1/2012 6/30/2013 FL Methylene chloride (Dichloromethane) 7/1/2012 6/30/2013 FL Naphthalene 7/1/2012 6/30/2013 FL n-Butylbenzene 7/1/2012 6/30/2013 FL n-Propylbenzene 7/1/2012 6/30/2013 FL Propionitrlle (Ethyl cyanide) 7/1/2012 6/30/2013 FL sec-Butylbenzene 7/1/2012 6/30/2013 FL Styrene 7/1/2012 6/30/2013 FL tert-Butylbenzene 7/1/2012 6/30/2013 FL Tetrachloroethylene (Perchloroethylene) 7/1/2012 6/30/2013 FL Toluene 7/1/2012 6/30/2013 FL trans-1,2-Dichloroethylene 7/1/2012 6/30/2013 FL trans-1,3-Dichloropropylene 7/1/2012 6/30/2013 FL trans-1,4-Dichloro-2-butene 7/1/2012 6/30/2013 FL Trichloroethene (Trichloroethylene) 7/1/2012 6/30/2013 FL Trichlorofluoromethane (Fluorotnchloromethane, Freon 11) 7/1/2012 6/30/2013 FL Vinyl acetate 7/1/2012 6/30/2013 FL Vinyl chloride 7/1/2012 6/30/2013 FL Xylene (total) 7/1/2012 6/30/2013 FL Method EPA 9020 Total organic halides (TOX) Method EPA 9040 pH 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL UTAH DEPARTMENT OF HEALTH 4431 South 2700 West • Taylorsville. UT 84119 • phone (801) 965-2400 • fax (801) 965-2544 www health utah gov/els/labimp/ EPA Number: WY00002 Attachment to Certificate Number: WY000022012-3 Page? oflO Energy Laboratones Incorporated - Casper Start Date Expires AB Program/Matrix: RCRA (Solid & Hazardous Material) Method EPA 1311 Toxicity Charactenstic Leaching Procedure Metals 7/1/2012 6/30/2013 FL Toxicity Characteristic Leaching Procedure Volatlles 7/1/2012 6/30/2013 FL Method EPA3050B Preparation/Extraction 7/1/2012 6/30/2013 FL Method EPA3550A Preparation/Extraction 7/1/2012 6/30/2013 FL Method EPA 5035 Preparation/Extraction 7/1/2012 6/30/2013 FL Method EPA6010B Antimony 7/1/2012 6/30/2013 FL Arsenic 7/1/2012 6/30/2013 FL Banum 7/1/2012 6/30/2013 FL Cadmium 7/1/2012 6/30/2013 FL Chromium 7/1/2012 6/30/2013 FL Lead 7/1/2012 6/30/2013 FL Selenium 7/1/2012 6/30/2013 FL Silver 7/1/2012 6/30/2013 FL Method EPA 6020 Arsenic 7/1/2012 6/30/2013 FL Banum 7/1/2012 6/30/2013 FL Cadmium 7/1/2012 6/30/2013 FL Chromium 7/1/2012 6/30/2013 FL Lead 7/1/2012 6/30/2013 FL Selenium 7/1/2012 6/30/2013 FL Sliver 7/1/2012 6/30/2013 FL Method EPA7471A Mercury 7/1/2012 6/30/2013 FL Method EPA 8015B Diesel range organics (DRO) 7/1/2012 6/30/2013 FL Gasoline range organics (GRO) 7/1/2012 6/30/2013 FL Method EPA8260B 1.1.1,2-Tetrachloroethane 7/1/2012 6/30/2013 FL 1,1,1 -Tnchloroethane 7/1/2012 6/30/2013 FL 1,1,2,2-Tetrachloroethane 7/1/2012 6/30/2013 FL 1,1,2-Trichloroethane 7/1/2012 6/30/2013 FL 1,1-Dichloroethane 7/1/2012 6/30/2013 FL 1,1-Dichloroethylene 7/1/2012 6/30/2013 FL 1.1-Dichloropropene 7/1/2012 6/30/2013 FL 1,2,3-Tnchlorobenzene 7/1/2012 6/30/2013 FL 1,2,3-Tnchloropropane 7/1/2012 6/30/2013 FL 1,2,4-Trichlorobenzene 7/1/2012 6/30/2013 FL 1,2,4-Tnmethylbenzene 7/1/2012 6/30/2013 FL 1,2-Dibromo-3-chloropropane (DBCP) 7/1/2012 6/30/2013 FL 1,2-Dibromoethane (EDB. Ethylene dibromide) 7/1/2012 6/30/2013 FL 1,2-Dichlorobenzene (o-Dichlorobenzene) 7/1/2012 6/30/2013 FL 1,2-Dichloroethane (Ethylene dichlonde) 7/1/2012 6/30/2013 FL UTAH DEPARTMENT OF HEALTH 4431 South 2700 West • Taylorsville, UT 84119 • phone (801) 965-2400 • fax (801) 965-2544 www health utah gov/els/labimp/ EPA Number: WY00002 Attachment to Certificate Number: Energy Laboratones Incorporated - Casper WY000022012-3 P^ge 8 of i o start Date Expires AB Program/Matrix: RCRA (Solid & Hazardous Material) 1,2-Dichloropropane 7/1/2012 6/30/2013 FL 1,3,5-Tnmethylbenzene 7/1/2012 6/30/2013 FL 1,3-Dichlorobenzene 7/1/2012 6/30/2013 FL 1,3-Dichloropropane 7/1/2012 6/30/2013 FL 1,4-Dichlorobenzene 7/1/2012 6/30/2013 FL 2,2-Dichloropropane 7/1/2012 6/30/2013 FL 2-Butanone (Methyl ethyl ketone, MEK) 7/1/2012 6/30/2013 FL 2-Chloroethyl vinyl ether 7/1/2012 6/30/2013 FL 2-Chlorotoluene 7/1/2012 6/30/2013 FL 2-Hexanone 7/1/2012 6/30/2013 FL 4-Chlorotoluene 7/1/2012 6/30/2013 FL 4-Methyl-2-pentanone (MIBK) 7/1/2012 6/30/2013 FL Acetone 7/1/2012 6/30/2013 FL Acetonitnle 7/1/2012 6/30/2013 FL Acrolein (Propenal) 7/1/2012 6/30/2013 FL Acrylonitnle 7/1/2012 6/30/2013 FL Allyl chlonde (3-Chloropropene) 7/1/2012 6/30/2013 FL Benzene 7/1/2012 6/30/2013 FL Bromobenzene 7/1/2012 6/30/2013 FL Bromochloromethane 7/1/2012 6/30/2013 FL Bromodichloromethane 7/1/2012 6/30/2013 FL Bromoform 7/1/2012 6/30/2013 FL Carbon disulfide 7/1/2012 6/30/2013 FL Carbon tetrachloride 7/1/2012 6/30/2013 FL Chlorobenzene 7/1/2012 6/30/2013 FL Chlorodibromomethane 7/1/2012 6/30/2013 FL Chloroethane (Ethyl chloride) 7/1/2012 6/30/2013 FL Chloroform 7/1/2012 6/30/2013 FL Chloroprene (2-Chloro-1,3-butadiene) 7/1/2012 6/30/2013 FL cis-1,2-DichIoroethylene 7/1/2012 6/30/2013 FL cis-1,3-Dichloropropene 7/1/2012 6/30/2013 FL Dibromomethane (Methylene bromide) 7/1/2012 6/30/2013 FL Dichlorodifluoromethane (Freon-12) 7/1/2012 6/30/2013 FL Diethyl ether 7/1/2012 6/30/2013 FL Ethyl methacrylate 7/1/2012 6/30/2013 FL Ethylbenzene 7/1/2012 6/30/2013 FL Hexachlorobutadiene 7/1/2012 6/30/2013 FL lodomethane (Methyl iodide) 7/1/2012 6/30/2013 FL Isobutyl alcohol (2-Methyl-1-propanol) 7/1/2012 6/30/2013 FL Isopropylbenzene 7/1/2012 6/30/2013 FL Methyl bromide (Bromomethane) 7/1/2012 6/30/2013 FL Methyl chlonde (Chloromethane) 7/1/2012 6/30/2013 FL Methyl tert-butyl ether (MTBE) 7/1/2012 6/30/2013 FL Methylene chlonde (Dichloromethane) 7/1/2012 6/30/2013 FL Naphthalene 7/1/2012 6/30/2013 FL n-Butylbenzene 7/1/2012 6/30/2013 FL n-Propylbenzene 7/1/2012 6/30/2013 FL Propionitnle (Ethyl cyanide) 7/1/2012 6/30/2013 FL sec-Butylbenzene 7/1/2012 6/30/2013 FL UTAH DEPARTMENT OF HEALTH 4431 South 2700 West • Taylorsville, UT 84119 • phone (801) 965-2400 • fax (801) 965-2544 www health utah.gov/els/labimp/ EPA Number: WY00002 Attachment to Certificate Number: WY000D22012-3 Page 9 of 10 Energy Laboratones Incorporated - Casper Start Date Expires AB Program/Matrix: RCRA (Solid & Hazardous Material) Styrene 7/1/2012 6/30/2013 FL tert-Butylbenzene 7/1/2012 6/30/2013 FL Tetrachloroethylene (Perchloroethylene) 7/1/2012 6/30/2013 FL Toluene 7/1/2012 6/30/2013 FL trans-1,2-Dichloroethylene 7/1/2012 6/30/2013 FL trans-1,3-Dichloropropylene 7/1/2012 6/30/2013 FL trans-1.4-Dichloro-2-butene 7/1/2012 6/30/2013 FL Tnchloroethene (Tnchloroethylene) 7/1/2012 6/30/2013 FL Trichlorofluoromethane (Fluorotnchloromethane, Freon 11) 7/1/2012 6/30/2013 FL Vinyl acetate 7/1/2012 6/30/2013 FL Vinyl chloride 7/1/2012 6/30/2013 FL Xylene (total) 7/1/2012 6/30/2013 FL Method EPA 9023 Extractable organics halides (EOX) 7/1/2012 6/30/2013 FL Method EPA9045C pH 7/1/2012 6/30/2013 FL ?f I? UTAH DEPARTMENT OF HEALTH 4431 South 2700 West • Taylorsville. UT 84119 • phone (801) 965-2400 • fax (801) 965-2544 www health utah gov/els/labimp/ EPA Number: WY00002 Attachment to Certificate Number: Energy Laboratones Incorporated - Casper WY000022012-3 Page lo of lo start Date Expires AB Program/Matrix: SDWA (Potable Water) Method Brooks/Blanchard Ra-228 Radium-228 Method EPA 200.8 Uranium Method EPA 900.0 Gross-alpha Gross-beta Method EPA 901.1 Gamma Emitters Method EPA 903 Radium-226 Method EPA 905 Strontium-90 Method EPA 906 Tritium Method EPARa-05 Radium-228 Method Radon in Drinking Water Radon-222 Method SM7500-UC Uranium 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL 7/1/2012 6/30/2013 FL The Utah Environmental Laboratory Certification Program (ELCP) encourages clients and data users to verify the most current certification letter for the authonzed method The analytes by method which a laboratory is authorized to perform at any given bme will be those indicated in the most recent certificate letter The most recent certification letter supersedes all previous certification or authorization letters It is the certified laboratory's responsibility to review this letter for discrepancies The certified laboratory must document any discrepancies In this letter and send notice to this bureau within 15 days of receipt This certificate letter will be recalled in the event your laboratory's certification is revoked UTAH DEPARTMENT OF r HEALTH 4431 South 2700 West • Taylorsville. UT 84119 • phone (801) 965-2400 • fax (801) 965-2544 www health utah gov/els/labimp/ Utah Department of Health W David Patton Ph D Execulrve Director Disease Control and Prevention Robyn M Atkinson, Ph D, HCLD Director, Unified State Laboratories Public Health Bureau of Laboratory Improvement David B Mendenhall, MPA, MT (ASCP) Bureau Director State of Utah Gary R Herbert Governor Gregory S Bell Lieutenant Governor Energy Laboratones Incorporated - Casper Thefollowing parameters have not been approved by the ELCP for certification. Program/Matrix: CWA / Non Potable Water Method EPA 901.1 Gamma Emitters Parameter not on Primary state accreditation letter. Program/Matrix: RCRA / Solid & Hazardous Matenal Method EPA8260B 1-Chlorohexane Parameter not on Primary state accreditation letter. Ethyl acetate Parameter not on Primary state accreditation letter UTAH DEPARTMEOT OF HEALTH 4431 South 2700 West • Taylorsville, UT 84119 • phone (801) 965-2400 • fax (801) 965-2544 www health utah gov/els/labtmp/ Attachment 3 Amencan West Analytical Laboratones Certification state of Utah Department of Health Environmental Laboratory Certification Program Certification is hereby granted to American West Analytical Laboratories 463 West 3600 South Salt Lake City, UT 84115 Has conformed with the 2009 TNI Standard Scope of accreditiation is limited to the State of Utah Accredited Fields of Accreditiation Which accompanies this Certificate EPA Number UT00031 Expiration Date 5/31/2013 Certificate Number UT000312012-2 iobyn M Atkinson, Ph D, HCLD Director, Unified State Laboratones Public Health Continued accredited status depends on successful ongoing parttcitpation in the program. ^ UTAH DEPARTMENT OF jf HEALTH State of Utah Gary R Herbert Governor Gregory S Bell Lieutenant Governor Utah Department of Health W David Patton Ph D Executive Director Disease Control and Prevention Robyn M. Atkinson, Ph D, HCLD Director Unified State Laboratories Public Heallh Bureau of Laboratory Improvement David B Mendenhall, MPA, MT (ASCP) Bureau Director EPA Number: UT00031 Attachment to Certificate Number: Amencan West Analytical Laboratones UT000312012-2 P^S^ ' ^8 Start Date Expires AB Program/Matnx: CWA (Non Potable Water) Method EPA 160.4 Residue-volatile Method EPA 1664A (HEM) Oil & Grease Method EPA 1801 Turbidity Method EPA 200 7 6/1/2012 5/31/2013 UT 6/1/2012 5/31/2013 UT 6/1/2012 5/31/2013 UT Aluminum 6/1/2012 5/31/2013 UT Antimony 6/1/2012 5/31/2013 UT Arsenic 6/1/2012 5/31/2013 UT Banum 6/1/2012 5/31/2013 UT Beryllium 6/1/2012 5/31/2013 UT Boron 6/1/2012 5/31/2013 UT Cadmium 6/1/2012 5/31/2013 UT Calcium 6/1/2012 5/31/2013 UT Chromium 6/1/2012 5/31/2013 UT Cobalt 6/1/2012 5/31/2013 UT Copper 6/1/2012 5/31/2013 UT Iron 6/1/2012 5/31/2013 UT Lead 6/1/2012 5/31/2013 UT Magnesium 6/1/2012 5/31/2013 UT Manganese 6/1/2012 5/31/2013 UT Molybdenum 6/1/2012 5/31/2013 UT Nickel 6/1/2012 5/31/2013 UT Potassium 6/1/2012 5/31/2013 UT Selenium 6/1/2012 5/31/2013 UT Silica as Si02 6/1/2012 5/31/2013 UT Silver 6/1/2012 5/31/2013 UT Sodium 6/1/2012 5/31/2013 UT Strontium 6/1/2012 5/31/2013 UT Thallium 6/1/2012 5/31/2013 UT Tin 6/1/2012 5/31/2013 UT Titanium 6/1/2012 5/31/2013 UT Vanadium 6/1/2012 5/31/2013 UT Zinc 6/1/2012 5/31/2013 UT UIAB OEPARTMEOT OF HEALTH 4431 South 2700 West • Taylorsville. UT 84119 • phone (801) 965-2400 • fax (801) 965-2544 www health utah gov/els/labimp/ EPA Number: UT00031 Attachment to Certificate Number: Amencan West Analytical Laboratones UT000312012-2 Start Date Page 12 of 28 Expires AB Program/Matrix: RCRA (Non Potable Water) Chloroprene (2-Chloro-1,3-butadiene) 6/1/2012 5/31/2013 UT cis-1,2-Dich loroethylene 6/1/2012 5/31/2013 UT cis-1,3-Dichloropropene 6/1/2012 5/31/2013 UT cis-1,4-Dichloro-2-butene 6/1/2012 5/31/2013 UT Cyclohexane 6/1/2012 5/31/2013 UT Cyclohexanone 6/1/2012 5/31/2013 UT Dibromomethane (Methylene bromide) 6/1/2012 5/31/2013 UT Dichlorodifluoromethane (Freon-12) 6/1/2012 5/31/2013 UT Diethyl ether 6/1/2012 5/31/2013 UT Ethyl acetate 6/1/2012 5/31/2013 UT Ethyl methacrylate 6/1/2012 5/31/2013 UT Ethylbenzene 6/1/2012 5/31/2013 UT Hexachlorobutadiene 6/1/2012 5/31/2013 UT lodomethane (Methyl iodide) 6/1/2012 5/31/2013 UT Isobutyl alcohol (2-Methyl-1-propanol) 6/1/2012 5/31/2013 UT Isopropyl acetate 6/1/2012 5/31/2013 UT Isopropyl alcohol (2-Propanol, Isopropanol) 6/1/2012 5/31/2013 UT Isopropylbenzene 6/1/2012 5/31/2013 UT Methacrylonitrlle 6/1/2012 5/31/2013 UT Methyl acetate 6/1/2012 5/31/2013 UT Methyl acrylate 6/1/2012 5/31/2013 UT Methyl bromide (Bromomethane) 6/1/2012 5/31/2013 UT Methyl chloride (Chloromethane) 6/1/2012 5/31/2013 UT Methyl methacrylate 6/1/2012 5/31/2013 UT Methyl tert-butyl ether (MTBE) 6/1/2012 5/31/2013 UT Methylcyclohexane 6/1/2012 5/31/2013 UT Methylene chloride (Dichloromethane) 6/1/2012 5/31/2013 UT m-Xylene 6/1/2012 5/31/2013 UT n-Amyl acetate 6/1/2012 5/31/2013 UT Naphthalene 6/1/2012 5/31/2013 UT n-Butyl alcohol (1-Butanol, n-Butanol) 6/1/2012 5/31/2013 UT n-Butylbenzene 6/1/2012 5/31/2013 UT n-Hexane 6/1/2012 5/31/2013 UT n-Octane 6/1/2012 5/31/2013 UT n-Propylamine 6/1/2012 5/31/2013 UT n-Propylbenzene 6/1/2012 5/31/2013 UT o-Xylene 6/1/2012 5/31/2013 UT Pentachloroethane 6/1/2012 5/31/2013 UT Propionitnle (Ethyl cyanide) 6/1/2012 5/31/2013 UT p-Xylene 6/1/2012 5/31/2013 UT sec-Butylbenzene 6/1/2012 5/31/2013 UT Styrene 6/1/2012 5/31/2013 UT tert-Butyl alcohol 6/1/2012 5/31/2013 UT tert-Butylbenzene 6/1/2012 5/31/2013 UT Tetrachloroethylene (Perchloroethylene) 6/1/2012 5/31/2013 UT Tetrahydrofuran (THF) 6/1/2012 5/31/2013 UT Toluene 6/1/2012 5/31/2013 UT trans-1,2-Dichloroethylene 6/1/2012 5/31/2013 UT trans-1,3-Dichloropropylene 6/1/2012 5/31/2013 UT iriAH OTPARTMENT OF r HEALTH 4431 South 2700 West • Taylorsville, UT 84119 • phone (801) 965-2400 • fax (801) 965-2544 vwwv health utah gov/els/labimp/