2009 ADEC & ADNR ANNUAL REPORT
ALASKA GOLD COMPANY PAGE B-1 ROCK CREEK MINE AND BIG HURRAH PROJECT
Appendix B—Groundwater Data Analysis
Appendix B—Groundwater Data Analysis Memorandum TSF and IWF Monitoring Wells
2009 Rock Creek & Big Hurrah Annual Report Page B-1
350 Indiana Street, Suite 500
Golden, Colorado 80401
Tel (303) 217-5700 / 877.855.2655- Fax (303) 217-5705
www.tetratech.com
Technical Memorandum To: Mitch Henning From: Ron Rimelman
Company: Alaska Gold Company Date: 1/15/2010
Re: Rock Creek Mine, Background Baseline Ground Water Quality Statistics
Project #: 114-31979
AGC’s groundwater monitoring plan was developed to determine whether TSF seepage, if any, or the groundwater injection well field (IWF) contribute to a significant increase in constituent of concern (COC) concentrations or an exceedance of applicable Alaska water quality standards for drinking water. Representative monitoring wells have been established at 4 locations down gradient of the TSF (MW06-08A, MW06-09A/B and MW06-10A) and 2 locations downgradient of the IWF (MW07-11 and MW08-15A) (
Background
Figure 1). Samples are collected monthly from the TSF monitoring wells and quarterly from the IWF monitoring well.
Figure 1 – Monitoring Well Locations
Appendix B—Groundwater Data Analysis Memorandum TSF and IWF Monitoring Wells
2009 Rock Creek & Big Hurrah Annual Report Page B-2
Under the February 20, 2009 temporary closure plan (TCP) for the Rock Creek Mine, AGC is required to monitor groundwater to demonstrate compliance with limits based on Alaska water quality standards. In addition, TCP Table D3 establishes action levels for specific constituents in the monitoring wells downgradient of the TSF. These trigger values were based on an initial assessment of background levels and are intended to assess whether TSF seepage is reaching the monitoring wells. The TCP did not establish action levels for the IWF monitoring well.
Compliance Summary
Table 1 shows the total number of exceedances observed for both Alaska water quality standards and TCP action levels during 2009 in the TSF monitoring wells. Table 2 shows the number of exceedances observed in the IWF monitoring wells. Waste Management Permit Conditions 1.2.10 and 1.10.3 require AGC to submit a plan to ADEC outlining proposed corrective actions to prevent adverse environmental impacts and prevent further exceedances.
Table 1 –TSF Monitoring Wells Exceedance Summary
Parameter
MW06-08A MW06-09A MW06-09B MW06-10A
# Times Exceeding: # Times Exceeding: # Times Exceeding: # Times Exceeding:
WQS TCP Action
Level WQS
TCP Action Level
WQS TCP Action
Level WQS
TCP Action Level
Antimony - 4 - - - 1 - -
Arsenic 22 - 24 - 30 - 24 -
Copper - - - - - - 1 -
Manganese 6 - 1 - 29 - - -
Nickel - - - - - 5 - -
Potassium - - - 23 - 29 - 8
Sodium - - - 23 - 18 - -
Sulfate - - - - - 14 - 4
Total Dissolved Solids - - - - - 9 - -
Total Nitrate/Nitrite - - - - - 5 - -
Table 2: IWF Monitoring Well Summary
Well ID # Times Exceeding WQS
Aluminum Antimony Arsenic Iron Manganese Zinc
MW07-11 - 7 8 - - 4
MW08-15A 3 - 3 2 2 -
Measures outlined below constitute AGC’s proposed corrective action plan as required by Waste Management Permit Condition 1.10.3. Upon approval by ADEC, AGC will commence implementing this proposed corrective action plan. Based upon the analysis prepared by Tetra Tech enclosed as Attachment 1, AGC concludes implementation of this corrective action plan will avoid adverse impacts to water quality and the environment.
Tetra Tech’s analysis shows that, with few exceptions, the water quality standard exceedances observed in the TSF monitoring wells during 2009 were consistently the result of natural background concentrations present in the groundwater. It is important to understand that the TSF only received small amounts of tailings during the limited operating period.
Corrective Action Plan
In response to the corrective action requirement and to support the above findings, Tetra Tech conducted a detailed statistical analysis of baseline groundwater concentrations. This analysis supports establishing
Appendix B—Groundwater Data Analysis Memorandum TSF and IWF Monitoring Wells
2009 Rock Creek & Big Hurrah Annual Report Page B-3
new well-specific action levels for each water quality parameter that has recently exhibited exceedances. These new action levels reflect the concentrations at which potential adverse impacts on groundwater quality may actually occur, and for which AGC should take specific corrective actions to address the impact. The action levels reflect the Alaska WQS except where background levels exceed the WQS. Where such exceedances occur, the action levels represent the observed background concentrations. Compliance summaries, therefore, should continue to include exceedances of both the WQS and TCP action levels. Corrective actions, however, should only be implemented for water quality parameters where the new action levels are exceeded.
Groundwater trend data for 2009 (Figures B-1 – B-24) demonstrate that background concentrations for certain parameters, notably arsenic and manganese, are naturally elevated in the vicinity of the Rock Creek Mine. Figure B-2, for example, shows that arsenic concentrations in well MW06-8A are significantly higher than the WQS of 10 ug/L. Tetra Tech’s analysis also recognizes that there is considerable heterogeneity in groundwater conditions at each well. Each well, therefore, is considered as a separate dataset for the analysis. Additional detail on Tetra Tech’s methodology and results are presented in Attachment 1.
During 2009, monitoring well samples recorded the following exceedances of the proposed action levels:
• MW06-09A—Arsenic (1) and manganese (1) [Figures B-6 and B-7] • MW06-09B—Arsenic (2) and manganese (4) [Figures B-10 and B-11] • MW06-10A—Arsenic (1) [Figure B-14] • MW07-11—Antimony (7) and arsenic (1) [Figures B-17 and B-18] • MW08-15A—Arsenic (3) and manganese (2) [Figures B-22 and B-23]
The elevated arsenic and manganese values in MW06-09A were both observed on 2/10/2009 and are well above the long term averages for the year. Both values far exceed samples collected immediately prior to and following that date. An elevated total suspended solids concentration for the same sample (Figure B-25) strongly suggests the sample may have been contaminated and is possible invalid. The elevated arsenic and manganese values observed in MW06-09B occurred at the end of 2009. No cause has yet been identified. AGC will review subsequent monitoring data to determine any adverse trends at this sample point. The elevated arsenic value observed in MW06-10A was an isolated occurrence on 9/16/2006; subsequent samples have shown concentrations well below the proposed action level. Antimony levels in MW 07-11 steadily rose after injection began, reaching a maximum level of approximately 25 ug/L during September 2009. Subsequently, antimony levels have declined after AGC completed upgrades to the WTP that improved metals removal. In fact, the antimony level in the WTP effluent was consistently below 6 ug/L during the last quarter of 2009. AGC will continue to monitor the antimony level in MW07-11 during 2010 to evaluate whether it continues to decline towards the action level. The elevated arsenic value in MW07-11 was an isolated occurrence on 12/14/2009. AGC will continue to monitor arsenic levels in MW07-11 to determine if this value is indicative of any adverse trends.
There is insufficient background data to establish background-based action levels for monitoring well MW08-15A. As noted above, WTP effluent levels for the parameters listed in Table 13 are now consistently below water quality standards. As a result, AGC has assumed the late 2009 samples are representative of natural conditions and has not undertaken any corrective actions. During 2010, AGC will continue to review the data from MW08-15A to determine whether there are any detectable changes in water quality over time.
Appendix B—Groundwater Data Analysis Memorandum TSF and IWF Monitoring Wells
2009 Rock Creek & Big Hurrah Annual Report Page B-4
0
1
2
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4
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7
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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ts:
ug/L
Antimony (Total)Sample Point: MW06-08A Sample Result
Proposed Action Level
Figure B-1 2009
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Figure B-2 2009
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Figure B-3 2009
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ts:
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LTotal Dissolved Solids (Total)
Sample Point: MW06-08A Sample Result
Proposed Action Level
Figure B-4 2009
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Proposed Action Level
Figure B-5 2009
0
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250
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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ts:
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Proposed Action Level
Figure B-6 2009
Appendix B—Groundwater Data Analysis Memorandum TSF and IWF Monitoring Wells
2009 Rock Creek & Big Hurrah Annual Report Page B-5
0
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Proposed Action Level
Figure B-8 2009
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Proposed Action Level
Figure B-9 2009
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Proposed Action Level
Figure B-10 2009
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Proposed Action Level
Figure B-11 2009
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Proposed Action Level
Figure B-12 2009
0
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250
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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ts:
ug/L
Manganese (Total)Sample Point: MW06-09A Sample Result
Proposed Action Level
Figure B-7 2009
Appendix B—Groundwater Data Analysis Memorandum TSF and IWF Monitoring Wells
2009 Rock Creek & Big Hurrah Annual Report Page B-6
0
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Proposed Action Level
Figure B-13 2009
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Proposed Action Level
Figure B-14 2009
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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ts:
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Proposed Action Level
Figure B-15 2009
0
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600
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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ts:
mg/
LTotal Dissolved Solids (Total)
Sample Point: MW06-10A Sample Result
Proposed Action Level
Figure B-16 2009
0
5
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15
20
25
30
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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Proposed Action Level
Figure B-17 2009
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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Proposed Action Level
Figure B-18 2009
Appendix B—Groundwater Data Analysis Memorandum TSF and IWF Monitoring Wells
2009 Rock Creek & Big Hurrah Annual Report Page B-7
0
10
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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ts:
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Manganese (Total)Sample Point: MW07-11 Sample Result
Proposed Action Level
Figure B-19 2009
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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ts:
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L
Total Dissolved Solids (Total)Sample Point: MW07-11 Sample Result
Proposed Action Level
Figure B-20 2009
0
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7
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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ug/L
Antimony (Total)Sample Point: MW08-15A Sample Result
Proposed Action Level
Figure B-21 2009
0
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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Arsenic (Total)Sample Point: MW08-15A Sample Result
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Figure B-22 2009
0
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Manganese (Total)Sample Point: MW08-15A Sample Result
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Figure B-23 2009
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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ts:
mg/
L
Total Dissolved Solids (Total)Sample Point: MW08-15A Sample Result
Proposed Action Level
Figure B-24 2009
Appendix B—Groundwater Data Analysis Memorandum TSF and IWF Monitoring Wells
2009 Rock Creek & Big Hurrah Annual Report Page B-8
0
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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ts:
mg/
L
Total Suspended Solids (Total)Sample Point: MW06-09A
Sample Result
Figure B-25 2009
Appendix B—Groundwater Data Analysis Memorandum TSF and IWF Monitoring Wells
2009 Rock Creek & Big Hurrah Annual Report Page B-9
Attachment 1
350 Indiana Street, Suite 500
Golden, Colorado 80401
Tel (303) 217-5700 / 877.855.2655- Fax (303) 217-5705
www.tetratech.com
Technical Memorandum To: DRAFT From: Rex Bryan
Company: Alaska Gold Company Date: 1/15/2010
Re: Rock Creek Mine, Background Baseline Ground Water Quality Statistics
Project #: 114-31979
CC: Ron Rimelman; John Rozelle, Tetra Tech File
Introduction
Tetra Tech Inc. (TT) has analyzed the background data for groundwater quality at Alaska Gold Corporation’s (AGC) Rock Creek Mine site. This study is a continuation of a January 9, 2009 study done by SRK Consulting (2). Figure 1 shows the study area.
Figure 1. Sample Points
Appendix B—Groundwater Data Analysis Memorandum TSF and IWF Monitoring Wells
2009 Rock Creek & Big Hurrah Annual Report Page B-10
The objective of this analysis to review the background ground water data and propose statistically derived action levels for constituents of concern (COC) for each groundwater monitoring well where background levels exceed the applicable WQS.
The site monitoring plan has been developed to meet the requirements of Title 18 Chapter 60 and 70 of the Alaska Administrative Code (AAC), set forth in Article 7 of 18.AAC.60; Monitoring and Corrective Action Requirements (Title 18 Chapter 60 Section 800-860) with the objective of meeting the requirements of 18 AAC 70.
The groundwater monitoring program reflects the following components of 18 AAC 60 and 18 AAC 70:
● 18.AAC.60.825(a-e) The monitoring system has been designed to meet the requirements in terms of location, design, local hydrogeological conditions, facility design, the ability to detect potential releases and local physiographic constraints.
● 18.AAC.60.825(a)(1)(B) Sampling at other wells will provide an indication of background groundwater quality that is at least as representative as that provided by upgradient wells.
● 18.AAC.60.825(c) Has established relevant points of compliance which reflect local hydrogeological conditions, the volume and physical and chemical characteristics of the leachate, the existing quality of the groundwater…
● Appropriate tolerance levels have been established for COCs to reflect background conditions and allow detection of statistically significant increases.
● Indicator parameters have been defined to reflect the composition and site-specific background water quality. These parameters have been selected as those most likely to give an unambiguous chemical signature at monitory locations in the event of a release from the tailings storage facility (TSF) and the Injection Well area (IW).
Based on these criteria, fourteen indicator parameters have been chosen:
1. antimony (total) 2. antimony (dissolved) 3. copper (dissolved) 4. cyanide WAD 5. molybdenum (dissolved) 6. nickel (dissolved) 7. nitrate+nitrite as N (total) 8. potassium (dissolved) 9. sodium (dissolved) 10. sulfate (dissolved), 11. total dissolved solids 12. arsenic (total) 13. arsenic (dissolved) 14. manganese (dissolved) The study area is divided into two separate study areas, the Tailings Storage Facility (TSF) area and the Injection Well (IW) area. The groundwater data show considerable heterogeneity in constituent concentrations from well to well. Therefore, each monitoring well has been considered as separate dataset for this statistical analysis of background levels. Several datasets were reviewed for this analysis. The baseline groundwater monitoring data predating the mining operation (latest data: March 25, 2008) came from the Rock Creek Project Alaska Department of Natural Resources web site (1). In addition, data from an SRK Consulting memo to AGC (2) and excel spreadsheets from AGC’s current environmental department was used.
1. TSF Study Area
Appendix B—Groundwater Data Analysis Memorandum TSF and IWF Monitoring Wells
2009 Rock Creek & Big Hurrah Annual Report Page B-11
The wells included in the TSF study area consisted of MW06_8a; MW06_9a, 9b; and MW06_10a. The wells designated with “a” refer to sampling from a deeper bedrock zone, while the “b” refers to a sampling of groundwater in the overburden.
2. The IW Area
The well included in the IW area consists of MW07_11.
Discussion of Statistical Analysis.
The wells were sampled before mining at the area commenced. Each of the selected indicator parameters was statistically analyzed to determine variability baseline using Tetra Tech’s GWLimits© (3) program. This program used the baseline data to produce the best estimates for the natural upper tolerance limit of background. Note that the term “Upper Tolerance Limit” refers to an estimated value for which a specified proportion of the population will be below. For example we can be 95% confident that at least p% of the population is below a specific UTL value.
The calculation of this threshold will vary according to what underlying theoretical population exists (Normal, Lognormal, Poisson), or no distribution at all (non-parametric). Given the baseline sample size is small; the choice of a correct distribution invariably produces better estimates of the upper tolerance limit. This study follows the EPA guidance in determining the appropriate distribution. EPA’s methods are discussed in detail within EPA’s ProUCL Technical Guide (4). In addition, the results from GWLimits program have been checked against ProUCL output.
Appendix B—Groundwater Data Analysis Memorandum TSF and IWF Monitoring Wells
2009 Rock Creek & Big Hurrah Annual Report Page B-12
Attached is the output of GWLimits. Several panels depicting the graphs and charts of each analyte over time are shown on each page. For example, page 1 of Appendix 1, shown also in Figure 1, presents the statistics for total antimony at well MW06-10A. The bottom panel of the figure charts the values (y-axis) as measured at each time (x-axis). The portion of the chart plotted in black represents the data measured before mining (background) and the chart plotted in red the values after mining commenced. Note that the last background sample was taken on 4/11/2008, while the first site value was taken eight months later on 12/10/2008. The four graphs in the panels above analyze the distribution of the background dataset. The graphs show the results in their original and log-transformed form. Each of the probability plots (Sample Quantiles vs. Theoretical Quantiles) generates a Shapiro-Wilk test, which determines if the distribution is normal, lognormal or non-parametric. For total antimony at MW06-10A, the test does not reject the hypothesis that the data follows a log-normal distribution at a p=0.05. Because of this last test, the program calculates the UTL using a lognormal distribution and plots its value as a horizontal red line if it exceeds the UTL established in Table 1. In the case of total antimony at MW06-10A, the calculated UTL is 5.74 ug/L does not exceed the assigned trigger value of 6.9 ug/L (plotted as a horizontal blue line). Hence, the calculated background UTL trigger is not plotted, and a “NS” code is displayed in the small plot key. It should be noted that all of the UTL values calculated by GWLimits, given an “NS” code were in fact very similar to the trigger permit values shown in Table 1.
Additional information such as the number of samples in the background data set; the selected distribution; the maximum, average, and standard deviation is presented in the plot key area. When a GW standard exists for an analyte, is value is plotted as a horizontal green line.
As a further example of the plots in the appendix, Figure 2 shows the output of the GWLimits program for total arsenic at well MW06-9a. Note that the calculated background UTL is 93 ug/L, which is well above the applicable WQS of 10 ug/L. In addition, there is an extreme spike measured at 201 ug/L on
Table 3: Upper Tolerance Limit (UTL) Concentrations that trigger permit condition 1.2.10 (revised 6/26/2009)
Parameter Units EPA MCL**
MW06-8a MW06-9a MW06-9b
MW06-10a
MW07-11
Antimony (T,D) ug/L 6 1.2 1 1 6.9 UTL
Copper (D) ug/L 8 1.5 1.5 1.5 1.5 UTL
Cyanide (WAD) mg/L NS 0.00052 0.00052 0.00052 0.00052 UTL
Molybdenum (D) ug/L NS 10 10 10 10 UTL
Nickel (D) ug/L NS 5 5 5 5 UTL
Nitrate as Nitrogen (D) mg/L NS 0.12 0.17 0.23 0.13 UTL
Potassium (D) mg/L NS 0.85 0.95 0.71 0.96 UTL
Sodium (D) ug/L NS 4000 5500 4000 47000 UTL
Sulfate mg/L 250 50 50 53 30 UTL
Total Dissolved Solids mg/L 500 350 350 300 300 UTL
Manganese* (D) ug/L 50 UTL UTL UTL UTL UTL
Arsenic* (T,D) ug/L 10 UTL UTL UTL UTL UTL
Appendix B—Groundwater Data Analysis Memorandum TSF and IWF Monitoring Wells
2009 Rock Creek & Big Hurrah Annual Report Page B-13
February 10, 2009. Before and after this time, total arsenic values were measured at values ranging from 75 to 80 ug/L.
References:
(1) http://dnr.alaska.gov/mlw/mining/largemine/rockcreek/index.htm, October, 19, 2009
(2) SRK Consulting, Memo from B. Green and K. Black, SRK to M. Henning, Alaska Gold Company, Rock Creek Groundwater Baseline Water Quality Analysis, January 9, 2009.
(3) GWLimits© program, developed by Tetra Tech for statistical analysis and plot presentation of tolerance, confidence and prediction limits for multiple well, multiple parameter groundwater data, January 20, 2009
(3) ProUCL 4.0. (2004). A Statistical Software. National Exposure Research Lab, EPA, Las Vegas Nevada, April 2007.
Appendix B—Groundwater Data Analysis Memorandum TSF and IWF Monitoring Wells
2009 Rock Creek & Big Hurrah Annual Report Page B-14
Figure 1.
Appendix B—Groundwater Data Analysis Memorandum TSF and IWF Monitoring Wells
2009 Rock Creek & Big Hurrah Annual Report Page B-15
Figure 2.
Antimony (T)−−MW06−10A
ug/L
Fre
quen
cy
3.0 3.5 4.0 4.5 5.0 5.5
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
3.5
4.0
4.5
5.0
Antimony (T)−−MW06−10A
Shapiro−Wilk: W= 0.9136, p= 0.2692Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Antimony (T))−−MW06−10A
log(ug/L)
Fre
quen
cy
1.1 1.2 1.3 1.4 1.5 1.6 1.7
0.0
0.5
1.0
1.5
2.0
2.5
3.0
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
1.2
1.3
1.4
1.5
1.6
log(Antimony (T))−−MW06−10A
Shapiro−Wilk: W= 0.9282, p= 0.3931Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 1
9/11
/200
7
10/2
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/200
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/20/
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/200
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MW06−10A
Ant
imon
y (T
) (u
g/L)
UTL Trigger= NSClosure Plan= 6.9ALASKA WQS = 6N =11%NDs = 0% Distribution:Log Normal: W= 0.9282, p= 0.3931 Limit Calculations: GaussianMax = 5.0300 (Beta = 76.2%)ave =3.9std =0.653559>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 2
Antimony (D)−−MW06−10A
ug/L
Fre
quen
cy
0 1 2 3 4 5
01
23
45
67
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
12
34
Antimony (D)−−MW06−10A
Shapiro−Wilk: W= 0.7855, p= 0.00644Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Antimony (D))−−MW06−10A
log(ug/L)
Fre
quen
cy
−1.0 −0.5 0.0 0.5 1.0 1.5 2.0
02
46
810
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
−0.
50.
00.
51.
01.
5
log(Antimony (D))−−MW06−10A
Shapiro−Wilk: W= 0.5489, p= 4.154e−05Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 3
9/11
/200
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/20/
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/200
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008
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/200
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008
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/200
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/24/
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/200
9
4/19
/200
9
6/16
/200
9
7/24
/200
9
8/25
/200
9
1
2
3
4
5
6
7
MW06−10A
Ant
imon
y (D
) (u
g/L)
UTL Trigger= NSClosure Plan= 6.9ALASKA WQS = 6N =12%NDs = 8% Distribution:Non−Parametric Limit Calculations: Helsel + BootstrapMax = 4.7900 (Beta = 77.9%)ave =3.73636std =0.548931>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 4
Arsenic (T)−−MW06−10A
ug/L
Fre
quen
cy
90 100 110 120 130 140
01
23
45
6
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
100
110
120
130
Arsenic (T)−−MW06−10A
Shapiro−Wilk: W= 0.761, p= 0.002894Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Arsenic (T))−−MW06−10A
log(ug/L)
Fre
quen
cy
4.5 4.6 4.7 4.8 4.9
01
23
45
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
4.6
4.7
4.8
4.9
log(Arsenic (T))−−MW06−10A
Shapiro−Wilk: W= 0.8081, p= 0.01202Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 5
9/11
/200
7
10/2
0/20
07
11/6
/200
7
12/4
/200
712
/20/
2007
1/17
/200
81/
29/2
008
2/19
/200
82/
28/2
008
3/8/
2008
3/25
/200
8
4/11
/200
8
12/1
0/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
23/2
009
1/24
/200
91/
28/2
009
2/2/
2009
2/6/
2009
2/10
/200
92/
14/2
009
2/17
/200
92/
19/2
009
2/26
/200
93/
3/20
093/
7/20
09
3/27
/200
9
4/19
/200
9
6/16
/200
9
7/24
/200
9
8/25
/200
9
20
40
60
80
100
120
140
MW06−10A
Ars
enic
(T
) (u
g/L)
UTL Trigger= 133.306Closure Plan= NSALASKA WQS = 10N =11%NDs = 0% Distribution:Non−Parametric Limit Calculations: Helsel + BootstrapMax = 133.0000 (Beta = 76.2%)ave =102.445std =11.2506>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 6
Arsenic (D)−−MW06−10A
ug/L
Fre
quen
cy
50 60 70 80 90 100
01
23
45
67
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
6070
8090
Arsenic (D)−−MW06−10A
Shapiro−Wilk: W= 0.9088, p= 0.2061Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Arsenic (D))−−MW06−10A
log(ug/L)
Fre
quen
cy
4.0 4.1 4.2 4.3 4.4 4.5 4.6
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
4.1
4.2
4.3
4.4
4.5
log(Arsenic (D))−−MW06−10A
Shapiro−Wilk: W= 0.916, p= 0.2549Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 7
9/11
/200
7
10/2
0/20
07
11/6
/200
7
12/4
/200
712
/20/
2007
1/17
/200
81/
29/2
008
2/19
/200
82/
28/2
008
3/8/
2008
3/25
/200
8
4/11
/200
8
12/1
0/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
23/2
009
1/24
/200
91/
28/2
009
2/2/
2009
2/6/
2009
2/10
/200
92/
14/2
009
2/17
/200
92/
19/2
009
2/26
/200
93/
3/20
093/
7/20
09
3/27
/200
9
4/19
/200
9
6/16
/200
9
7/24
/200
9
8/25
/200
9
20
40
60
80
100
MW06−10A
Ars
enic
(D
) (u
g/L)
UTL Trigger= 101.291Closure Plan= NSALASKA WQS = 10N =12%NDs = 0% Distribution:Log Normal: W= 0.916, p= 0.2549 Limit Calculations: GaussianMax = 95.0000 (Beta = 77.9%)ave =71.1417std =11.0195>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 8
Copper (D)−−MW06−10A
ug/L
Fre
quen
cy
0.44 0.46 0.48 0.50 0.52 0.54 0.56
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
0.44
0.46
0.48
0.50
0.52
0.54
Copper (D)−−MW06−10A
Shapiro−Wilk: W= 0.6251, p= 5.228e−05Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Copper (D))−−MW06−10A
log(ug/L)
Fre
quen
cy
−0.85 −0.80 −0.75 −0.70 −0.65 −0.60 −0.55
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
−0.
80−
0.75
−0.
70−
0.65
−0.
60
log(Copper (D))−−MW06−10A
Shapiro−Wilk: W= 0.6201, p= 4.528e−05Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 9
9/11
/200
7
10/2
0/20
07
11/6
/200
7
12/4
/200
712
/20/
2007
1/17
/200
81/
29/2
008
2/19
/200
82/
28/2
008
3/8/
2008
3/25
/200
8
4/11
/200
8
12/1
0/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
23/2
009
1/24
/200
91/
28/2
009
2/2/
2009
2/6/
2009
2/10
/200
92/
14/2
009
2/17
/200
92/
19/2
009
2/26
/200
93/
3/20
093/
7/20
09
3/27
/200
9
4/19
/200
9
6/16
/200
9
7/24
/200
9
8/25
/200
9
0
2
4
6
8
10
12
14
MW06−10A
Cop
per
(D)
(ug/
L)
UTL Trigger= NSClosure Plan= 1.5ALASKA WQS = 14N =11%NDs = 91% Distribution:Non−Parametric Limit Calculations: NAMax = 0.5500 (Beta = 76.2%)ave =0std =0>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 10
Manganese (D)−−MW06−10A
ug/L
Fre
quen
cy
35 40 45 50 55 60
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
3540
4550
55
Manganese (D)−−MW06−10A
Shapiro−Wilk: W= 0.9428, p= 0.5543Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Manganese (D))−−MW06−10A
log(ug/L)
Fre
quen
cy
3.5 3.6 3.7 3.8 3.9 4.0 4.1
0.0
0.5
1.0
1.5
2.0
2.5
3.0
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
3.6
3.7
3.8
3.9
4.0
log(Manganese (D))−−MW06−10A
Shapiro−Wilk: W= 0.9475, p= 0.612Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 11
9/11
/200
7
10/2
0/20
07
11/6
/200
7
12/4
/200
712
/20/
2007
1/17
/200
81/
29/2
008
2/19
/200
82/
28/2
008
3/8/
2008
3/25
/200
8
4/11
/200
8
12/1
0/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
23/2
009
1/24
/200
91/
28/2
009
2/2/
2009
2/6/
2009
2/10
/200
92/
14/2
009
2/17
/200
92/
19/2
009
2/26
/200
93/
3/20
093/
7/20
09
3/27
/200
9
4/19
/200
9
6/16
/200
9
7/24
/200
9
8/25
/200
9
30
40
50
60
MW06−10A
Man
gane
se (
D)
(ug/
L)
UTL Trigger= 67.5042Closure Plan= NSALASKA WQS = 50N =11%NDs = 0% Distribution:Log Normal: W= 0.9475, p= 0.612 Limit Calculations: GaussianMax = 58.2000 (Beta = 76.2%)ave =45.9091std =7.67143>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 12
Molybdenum (D)−−MW06−10A
ug/L
Fre
quen
cy
5.00 5.05 5.10 5.15
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
5.00
5.05
5.10
5.15
Molybdenum (D)−−MW06−10A
Shapiro−Wilk: W= 0.5118, p= 2.104e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Molybdenum (D))−−MW06−10A
log(ug/L)
Fre
quen
cy
1.605 1.610 1.615 1.620 1.625 1.630 1.635 1.640
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
1.61
01.
620
1.63
01.
640
log(Molybdenum (D))−−MW06−10A
Shapiro−Wilk: W= 0.5117, p= 2.102e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 13
9/11
/200
7
10/2
0/20
07
11/6
/200
7
12/4
/200
712
/20/
2007
1/17
/200
81/
29/2
008
2/19
/200
82/
28/2
008
3/8/
2008
3/25
/200
8
4/11
/200
8
12/1
0/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
23/2
009
1/24
/200
91/
28/2
009
2/2/
2009
2/6/
2009
2/10
/200
92/
14/2
009
2/17
/200
92/
19/2
009
2/26
/200
93/
3/20
093/
7/20
09
3/27
/200
9
4/19
/200
9
6/16
/200
9
7/24
/200
9
8/25
/200
9
5
6
7
8
9
10
11
MW06−10A
Mol
ybde
num
(D
) (u
g/L)
UTL Trigger= 10.9928Closure Plan= 10ALASKA WQS = 10N =11%NDs = 100% Distribution:Non−Parametric Limit Calculations: NAMax = 5.1500 (Beta = 76.2%)ave =0std =0>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 14
Nickel (D)−−MW06−10A
ug/L
Fre
quen
cy
2.0 2.5 3.0 3.5 4.0 4.5
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
2.0
2.5
3.0
3.5
4.0
Nickel (D)−−MW06−10A
Shapiro−Wilk: W= 0.9047, p= 0.2105Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Nickel (D))−−MW06−10A
log(ug/L)
Fre
quen
cy
0.6 0.8 1.0 1.2 1.4 1.6
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
0.8
1.0
1.2
1.4
log(Nickel (D))−−MW06−10A
Shapiro−Wilk: W= 0.9532, p= 0.6854Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 15
9/11
/200
7
10/2
0/20
07
11/6
/200
7
12/4
/200
712
/20/
2007
1/17
/200
81/
29/2
008
2/19
/200
82/
28/2
008
3/8/
2008
3/25
/200
8
4/11
/200
8
12/1
0/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
23/2
009
1/24
/200
91/
28/2
009
2/2/
2009
2/6/
2009
2/10
/200
92/
14/2
009
2/17
/200
92/
19/2
009
2/26
/200
93/
3/20
093/
7/20
09
3/27
/200
9
4/19
/200
9
6/16
/200
9
7/24
/200
9
8/25
/200
9
0
20
40
60
80
MW06−10A
Nic
kel (
D)
(ug/
L)
UTL Trigger= NSClosure Plan= 5ALASKA WQS = 81N =11%NDs = 0% Distribution:Log Normal: W= 0.9532, p= 0.6854 Limit Calculations: GaussianMax = 4.3000 (Beta = 76.2%)ave =2.77909std =0.648975>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 16
Potassium (D)−−MW06−10A
mg/l
Fre
quen
cy
200 400 600 800 1000
01
23
45
67
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
300
400
500
600
700
800
900
Potassium (D)−−MW06−10A
Shapiro−Wilk: W= 0.8203, p= 0.01742Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Potassium (D))−−MW06−10A
log(mg/l)
Fre
quen
cy
5.5 6.0 6.5 7.0
01
23
45
67
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
5.6
5.8
6.0
6.2
6.4
6.6
6.8
log(Potassium (D))−−MW06−10A
Shapiro−Wilk: W= 0.7606, p= 0.002859Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 17
9/11
/200
7
10/2
0/20
07
11/6
/200
7
12/4
/200
712
/20/
2007
1/17
/200
81/
29/2
008
2/19
/200
82/
28/2
008
3/8/
2008
3/25
/200
8
4/11
/200
8
12/1
0/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
23/2
009
1/24
/200
91/
28/2
009
2/2/
2009
2/6/
2009
2/10
/200
92/
14/2
009
2/17
/200
92/
19/2
009
2/26
/200
93/
3/20
093/
7/20
09
3/27
/200
9
4/19
/200
9
6/16
/200
9
7/24
/200
9
8/25
/200
9
300
400
500
600
700
800
900
MW06−10A
Pot
assi
um (
D)
(mg/
l)
UTL Trigger= NSClosure Plan= 960ALASKA WQS = NSN =11%NDs = 0% Distribution:Non−Parametric Limit Calculations: Helsel + BootstrapMax = 902.0000 (Beta = 76.2%)ave =567.091std =149.73>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 18
Sodium (D)−−MW06−10A
ug/l
Fre
quen
cy
2000 2500 3000 3500 4000 4500 5000
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
2000
3000
4000
Sodium (D)−−MW06−10A
Shapiro−Wilk: W= 0.4933, p= 3.032e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Sodium (D))−−MW06−10A
log(ug/l)
Fre
quen
cy
7.6 7.8 8.0 8.2 8.4 8.6
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
7.8
8.0
8.2
8.4
log(Sodium (D))−−MW06−10A
Shapiro−Wilk: W= 0.5552, p= 1.624e−05Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 19
9/11
/200
7
10/2
0/20
07
11/6
/200
7
12/4
/200
712
/20/
2007
1/17
/200
81/
29/2
008
2/19
/200
82/
28/2
008
3/8/
2008
3/25
/200
8
4/11
/200
8
12/1
0/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
23/2
009
1/24
/200
91/
28/2
009
2/2/
2009
2/6/
2009
2/10
/200
92/
14/2
009
2/17
/200
92/
19/2
009
2/26
/200
93/
3/20
093/
7/20
09
3/27
/200
9
4/19
/200
9
6/16
/200
9
7/24
/200
9
8/25
/200
9
2000
2500
3000
3500
4000
4500
MW06−10A
Sod
ium
(D
) (u
g/l)
UTL Trigger= 4787.83Closure Plan= 4700ALASKA WQS = NSN =10%NDs = 0% Distribution:Non−Parametric Limit Calculations: Helsel + BootstrapMax = 4790.0000 (Beta = 74.1%)ave =2481std =818.921>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 20
Sulfate (D)−−MW06−10A
mg/l
Fre
quen
cy
27.5 28.0 28.5 29.0 29.5 30.0
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
28.0
28.5
29.0
29.5
Sulfate (D)−−MW06−10A
Shapiro−Wilk: W= 0.9437, p= 0.565Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Sulfate (D))−−MW06−10A
log(mg/l)
Fre
quen
cy
3.32 3.34 3.36 3.38 3.40
0.0
0.5
1.0
1.5
2.0
2.5
3.0
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
3.32
3.34
3.36
3.38
log(Sulfate (D))−−MW06−10A
Shapiro−Wilk: W= 0.9462, p= 0.5961Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 21
9/11
/200
7
10/2
0/20
07
11/6
/200
7
12/4
/200
712
/20/
2007
1/17
/200
81/
29/2
008
2/19
/200
82/
28/2
008
3/8/
2008
3/25
/200
8
4/11
/200
8
12/1
0/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
23/2
009
1/24
/200
91/
28/2
009
2/2/
2009
2/6/
2009
2/10
/200
92/
14/2
009
2/17
/200
92/
19/2
009
2/26
/200
93/
3/20
093/
7/20
09
3/27
/200
9
4/19
/200
9
6/16
/200
9
7/24
/200
9
8/25
/200
9
50
100
150
200
250
MW06−10A
Sul
fate
(D
) (m
g/l)
UTL Trigger= 30.2526Closure Plan= 30ALASKA WQS = 250N =11%NDs = 0% Distribution:Log Normal: W= 0.9462, p= 0.5961 Limit Calculations: GaussianMax = 29.7000 (Beta = 76.2%)ave =28.5182std =0.616146>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 22
TDS−−MW06−10A
mg/l
Fre
quen
cy
160 170 180 190 200 210 220 230
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
160
170
180
190
200
210
220
TDS−−MW06−10A
Shapiro−Wilk: W= 0.8184, p= 0.01643Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(TDS)−−MW06−10A
log(mg/l)
Fre
quen
cy
5.1 5.2 5.3 5.4
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
5.10
5.20
5.30
5.40
log(TDS)−−MW06−10A
Shapiro−Wilk: W= 0.7819, p= 0.005445Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 23
9/11
/200
7
10/2
0/20
07
11/6
/200
7
12/4
/200
712
/20/
2007
1/17
/200
81/
29/2
008
2/19
/200
82/
28/2
008
3/8/
2008
3/25
/200
8
4/11
/200
8
12/1
0/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
23/2
009
1/24
/200
91/
28/2
009
2/2/
2009
2/6/
2009
2/10
/200
92/
14/2
009
2/17
/200
92/
19/2
009
2/26
/200
93/
3/20
093/
7/20
09
3/27
/200
9
4/19
/200
9
6/16
/200
9
7/24
/200
9
8/25
/200
9
150
200
250
300
350
400
450
500
MW06−10A
TD
S (
mg/
l)
UTL Trigger= NSClosure Plan= 300ALASKA WQS = 500N =11%NDs = 0% Distribution:Non−Parametric Limit Calculations: Helsel + BootstrapMax = 224.0000 (Beta = 76.2%)ave =205.727std =17.596>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 24
Total Nitrate−−MW06−10A
mg/l
Fre
quen
cy
0.04 0.06 0.08 0.10 0.12 0.14 0.16
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
0.04
0.06
0.08
0.10
0.12
0.14
Total Nitrate−−MW06−10A
Shapiro−Wilk: W= 0.4694, p= 1.596e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Total Nitrate)−−MW06−10A
log(mg/l)
Fre
quen
cy
−3.2 −3.0 −2.8 −2.6 −2.4 −2.2 −2.0 −1.8
01
23
45
67
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
−3.
2−
2.8
−2.
4−
2.0
log(Total Nitrate)−−MW06−10A
Shapiro−Wilk: W= 0.5457, p= 1.254e−05Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 25
9/11
/200
7
10/2
0/20
07
11/6
/200
7
12/4
/200
712
/20/
2007
1/17
/200
81/
29/2
008
2/19
/200
82/
28/2
008
3/8/
2008
3/25
/200
8
4/11
/200
8
12/1
0/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
23/2
009
1/24
/200
91/
28/2
009
2/2/
2009
2/6/
2009
2/10
/200
92/
14/2
009
2/17
/200
92/
19/2
009
2/26
/200
93/
3/20
093/
7/20
09
3/27
/200
9
4/19
/200
9
6/16
/200
9
7/24
/200
9
8/25
/200
9
0
2
4
6
8
10
MW06−10A
Tot
al N
itrat
e (m
g/l)
UTL Trigger= 0.313Closure Plan= 0.13ALASKA WQS = 10N =10%NDs = 60% Distribution:Non−Parametric Limit Calculations: Helsel + BootstrapMax = 0.1420 (Beta = 74.1%)ave =0.073std =0.0464919>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 26
Cyanide (WAD)−−MW06−10A
mg/l
Fre
quen
cy
0.00250 0.00255 0.00260 0.00265
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
0.00
250
0.00
255
0.00
260
0.00
265
Cyanide (WAD)−−MW06−10A
Shapiro−Wilk: W= 0.6467, p= 0.0002004Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Cyanide (WAD))−−MW06−10A
log(mg/l)
Fre
quen
cy
−6.00 −5.99 −5.98 −5.97 −5.96 −5.95 −5.94 −5.93
01
23
45
67
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
−5.
99−
5.97
−5.
95
log(Cyanide (WAD))−−MW06−10A
Shapiro−Wilk: W= 0.6476, p= 0.0002054Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 27
9/11
/200
7
10/2
0/20
07
11/6
/200
7
12/4
/200
712
/20/
2007
1/17
/200
81/
29/2
008
2/19
/200
82/
28/2
008
3/8/
2008
3/25
/200
8
4/11
/200
8
12/1
0/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
23/2
009
1/24
/200
91/
28/2
009
2/2/
2009
2/6/
2009
2/10
/200
92/
14/2
009
2/17
/200
92/
19/2
009
2/26
/200
93/
3/20
093/
7/20
09
3/27
/200
9
4/19
/200
9
6/16
/200
9
7/24
/200
9
8/25
/200
9
0.002
0.003
0.004
0.005
MW06−10A
Cya
nide
(W
AD
) (m
g/l)
UTL Trigger= 0.0054Closure Plan= 0.0052ALASKA WQS = 0.0052N =10%NDs = 100% Distribution:Non−Parametric Limit Calculations: NAMax = 0.0027 (Beta = 74.1%)ave =0std =0>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 28
Antimony (T)−−MW06−8A
ug/L
Fre
quen
cy
0.5 0.6 0.7 0.8 0.9 1.0 1.1
01
23
45
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
0.5
0.6
0.7
0.8
0.9
1.0
Antimony (T)−−MW06−8A
Shapiro−Wilk: W= 0.8315, p= 0.02440Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Antimony (T))−−MW06−8A
log(ug/L)
Fre
quen
cy
−0.8 −0.6 −0.4 −0.2 0.0 0.2
01
23
45
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
−0.
6−
0.4
−0.
20.
0
log(Antimony (T))−−MW06−8A
Shapiro−Wilk: W= 0.8119, p= 0.01351Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 29
9/11
/200
7
11/2
5/20
0712
/4/2
007
12/2
0/20
07
1/16
/200
81/
30/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/10
/200
8
1/19
/200
91/
24/2
009
1/27
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
1
2
3
4
5
6
MW06−8A
Ant
imon
y (T
) (u
g/L)
UTL Trigger= 1.526Closure Plan= 1.2ALASKA WQS = 6N =11%NDs = 45% Distribution:Non−Parametric Limit Calculations: Helsel + BootstrapMax = 1.0500 (Beta = 76.2%)ave =0.87std =0.124213>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 30
Antimony (D)−−MW06−8A
ug/L
Fre
quen
cy
0.5 0.6 0.7 0.8 0.9 1.0
01
23
45
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
0.5
0.6
0.7
0.8
0.9
Antimony (D)−−MW06−8A
Shapiro−Wilk: W= 0.7894, p= 0.006828Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Antimony (D))−−MW06−8A
log(ug/L)
Fre
quen
cy
−0.7 −0.6 −0.5 −0.4 −0.3 −0.2 −0.1 0.0
01
23
45
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
−0.
7−
0.5
−0.
3−
0.1
log(Antimony (D))−−MW06−8A
Shapiro−Wilk: W= 0.7728, p= 0.004134Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 31
9/11
/200
7
11/2
5/20
0712
/4/2
007
12/2
0/20
07
1/16
/200
81/
30/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/10
/200
8
1/19
/200
91/
24/2
009
1/27
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
1
2
3
4
5
6
MW06−8A
Ant
imon
y (D
) (u
g/L)
UTL Trigger= 1.4835Closure Plan= 1.2ALASKA WQS = 6N =11%NDs = 45% Distribution:Non−Parametric Limit Calculations: Helsel + BootstrapMax = 0.9140 (Beta = 76.2%)ave =0.8315std =0.0839684>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 32
Arsenic (T)−−MW06−8A
ug/L
Fre
quen
cy
270 280 290 300 310 320 330 340
01
23
45
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
280
290
300
310
320
330
Arsenic (T)−−MW06−8A
Shapiro−Wilk: W= 0.8701, p= 0.1002Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Arsenic (T))−−MW06−8A
log(ug/L)
Fre
quen
cy
5.60 5.65 5.70 5.75 5.80 5.85
01
23
45
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
5.65
5.70
5.75
5.80
log(Arsenic (T))−−MW06−8A
Shapiro−Wilk: W= 0.851, p= 0.05967Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 33
9/11
/200
7
11/2
5/20
0712
/4/2
007
12/2
0/20
07
1/16
/200
81/
30/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/10
/200
8
1/19
/200
91/
24/2
009
1/27
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
0
50
100
150
200
250
300
350
MW06−8A
Ars
enic
(T
) (u
g/L)
UTL Trigger= 362.325Closure Plan= NSALASKA WQS = 10N =10%NDs = 0% Distribution:Normal: W= 0.8701, p= 0.1002 Limit Calculations: GaussianMax = 336.0000 (Beta = 74.1%)ave =313std =16.9444>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 34
Arsenic (D)−−MW06−8A
ug/L
Fre
quen
cy
100 150 200 250 300
01
23
45
67
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
150
200
250
300
Arsenic (D)−−MW06−8A
Shapiro−Wilk: W= 0.8365, p= 0.02842Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Arsenic (D))−−MW06−8A
log(ug/L)
Fre
quen
cy
4.8 5.0 5.2 5.4 5.6 5.8
01
23
45
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
5.0
5.2
5.4
5.6
log(Arsenic (D))−−MW06−8A
Shapiro−Wilk: W= 0.7502, p= 0.002091Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 35
9/11
/200
7
11/2
5/20
0712
/4/2
007
12/2
0/20
07
1/16
/200
81/
30/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/10
/200
8
1/19
/200
91/
24/2
009
1/27
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
0
50
100
150
200
250
300
350
MW06−8A
Ars
enic
(D
) (u
g/L)
UTL Trigger= 366.906Closure Plan= NSALASKA WQS = 10N =11%NDs = 0% Distribution:Non−Parametric Limit Calculations: Helsel + BootstrapMax = 295.0000 (Beta = 76.2%)ave =251.455std =43.8414>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 36
Copper (D)−−MW06−8A
ug/L
Fre
quen
cy
0.48 0.49 0.50 0.51 0.52 0.53 0.54 0.55
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
0.49
0.51
0.53
0.55
Copper (D)−−MW06−8A
Shapiro−Wilk: W= 0.4983, p= 1.445e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Copper (D))−−MW06−8A
log(ug/L)
Fre
quen
cy
−0.70 −0.65 −0.60
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
−0.
72−
0.68
−0.
64−
0.60
log(Copper (D))−−MW06−8A
Shapiro−Wilk: W= 0.5061, p= 1.797e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 37
9/11
/200
7
11/2
5/20
0712
/4/2
007
12/2
0/20
07
1/16
/200
81/
30/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/10
/200
8
1/19
/200
91/
24/2
009
1/27
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
0
2
4
6
8
10
12
14
MW06−8A
Cop
per
(D)
(ug/
L)
UTL Trigger= NSClosure Plan= 1.5ALASKA WQS = 14N =11%NDs = 91% Distribution:Non−Parametric Limit Calculations: NAMax = 0.5500 (Beta = 76.2%)ave =0std =0>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 38
Manganese (D)−−MW06−8A
ug/L
Fre
quen
cy
45 50 55 60 65 70 75
01
23
45
6
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
5055
6065
7075
Manganese (D)−−MW06−8A
Shapiro−Wilk: W= 0.7109, p= 0.000646Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Manganese (D))−−MW06−8A
log(ug/L)
Fre
quen
cy
3.9 4.0 4.1 4.2 4.3 4.4
01
23
45
67
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
3.9
4.0
4.1
4.2
4.3
log(Manganese (D))−−MW06−8A
Shapiro−Wilk: W= 0.7438, p= 0.001725Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 39
9/11
/200
7
11/2
5/20
0712
/4/2
007
12/2
0/20
07
1/16
/200
81/
30/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/10
/200
8
1/19
/200
91/
24/2
009
1/27
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
50
60
70
80
MW06−8A
Man
gane
se (
D)
(ug/
L)
UTL Trigger= 86.2861Closure Plan= NSALASKA WQS = 50N =11%NDs = 0% Distribution:Non−Parametric Limit Calculations: Helsel + BootstrapMax = 74.8000 (Beta = 76.2%)ave =56.6636std =8.72872>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 40
Molybdenum (D)−−MW06−8A
ug/L
Fre
quen
cy
5.00 5.02 5.04 5.06 5.08 5.10
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
5.00
5.02
5.04
5.06
5.08
5.10
Molybdenum (D)−−MW06−8A
Shapiro−Wilk: W= 0.5316, p= 8.564e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Molybdenum (D))−−MW06−8A
log(ug/L)
Fre
quen
cy
1.605 1.610 1.615 1.620 1.625 1.630
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
1.61
01.
615
1.62
01.
625
1.63
0
log(Molybdenum (D))−−MW06−8A
Shapiro−Wilk: W= 0.5319, p= 8.628e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 41
9/11
/200
7
11/2
5/20
0712
/4/2
007
12/2
0/20
07
1/16
/200
81/
30/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/10
/200
8
1/19
/200
91/
24/2
009
1/27
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
5
6
7
8
9
10
MW06−8A
Mol
ybde
num
(D
) (u
g/L)
UTL Trigger= 10Closure Plan= 10ALASKA WQS = 10N =10%NDs = 100% Distribution:Non−Parametric Limit Calculations: NAMax = 5.1000 (Beta = 74.1%)ave =0std =0>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 42
Nickel (D)−−MW06−8A
ug/L
Fre
quen
cy
1.0 1.5 2.0 2.5 3.0
01
23
45
6
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
1.0
1.5
2.0
2.5
Nickel (D)−−MW06−8A
Shapiro−Wilk: W= 0.8113, p= 0.01990Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Nickel (D))−−MW06−8A
log(ug/L)
Fre
quen
cy
0.0 0.2 0.4 0.6 0.8 1.0 1.2
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
0.0
0.2
0.4
0.6
0.8
1.0
log(Nickel (D))−−MW06−8A
Shapiro−Wilk: W= 0.835, p= 0.03838Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 43
9/11
/200
7
11/2
5/20
0712
/4/2
007
12/2
0/20
07
1/16
/200
81/
30/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/10
/200
8
1/19
/200
91/
24/2
009
1/27
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
0
20
40
60
80
MW06−8A
Nic
kel (
D)
(ug/
L)
UTL Trigger= NSClosure Plan= 5ALASKA WQS = 81N =10%NDs = 0% Distribution:Non−Parametric Limit Calculations: Helsel + BootstrapMax = 2.8100 (Beta = 74.1%)ave =1.624std =0.722376>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 44
Potassium (D)−−MW06−8A
mg/l
Fre
quen
cy
250 300 350 400 450 500 550 600
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
250
350
450
550
Potassium (D)−−MW06−8A
Shapiro−Wilk: W= 0.7552, p= 0.004124Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Potassium (D))−−MW06−8A
log(mg/l)
Fre
quen
cy
5.4 5.6 5.8 6.0 6.2 6.4
01
23
45
6
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
5.6
5.8
6.0
6.2
6.4
log(Potassium (D))−−MW06−8A
Shapiro−Wilk: W= 0.7237, p= 0.001706Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 45
9/11
/200
7
11/2
5/20
0712
/4/2
007
12/2
0/20
07
1/16
/200
81/
30/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/10
/200
8
1/19
/200
91/
24/2
009
1/27
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
300
400
500
600
700
800
MW06−8A
Pot
assi
um (
D)
(mg/
l)
UTL Trigger= NSClosure Plan= 850ALASKA WQS = NSN =10%NDs = 40% Distribution:Non−Parametric Limit Calculations: Helsel + BootstrapMax = 585.0000 (Beta = 74.1%)ave =538.833std =34.5625>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 46
Sodium (D)−−MW06−8A
ug/l
Fre
quen
cy
2600 2700 2800 2900 3000 3100 3200
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
2600
2800
3000
3200
Sodium (D)−−MW06−8A
Shapiro−Wilk: W= 0.909, p= 0.3091Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Sodium (D))−−MW06−8A
log(ug/l)
Fre
quen
cy
7.85 7.90 7.95 8.00 8.05 8.10
0.0
0.5
1.0
1.5
2.0
2.5
3.0
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
7.90
7.95
8.00
8.05
log(Sodium (D))−−MW06−8A
Shapiro−Wilk: W= 0.923, p= 0.418Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 47
9/11
/200
7
11/2
5/20
0712
/4/2
007
12/2
0/20
07
1/16
/200
81/
30/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/10
/200
8
1/19
/200
91/
24/2
009
1/27
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
2600
2800
3000
3200
3400
3600
3800
4000
MW06−8A
Sod
ium
(D
) (u
g/l)
UTL Trigger= NSClosure Plan= 4000ALASKA WQS = NSN =9%NDs = 0% Distribution:Log Normal: W= 0.923, p= 0.418 Limit Calculations: GaussianMax = 3200.0000 (Beta = 71.7%)ave =2832.22std =172.828>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 48
Sulfate (D)−−MW06−8A
mg/l
Fre
quen
cy
40.0 40.5 41.0 41.5 42.0 42.5 43.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
40.5
41.0
41.5
42.0
42.5
Sulfate (D)−−MW06−8A
Shapiro−Wilk: W= 0.9166, p= 0.2911Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Sulfate (D))−−MW06−8A
log(mg/l)
Fre
quen
cy
3.69 3.70 3.71 3.72 3.73 3.74 3.75 3.76
0.0
0.5
1.0
1.5
2.0
2.5
3.0
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
3.70
3.71
3.72
3.73
3.74
3.75
log(Sulfate (D))−−MW06−8A
Shapiro−Wilk: W= 0.9199, p= 0.3176Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 49
9/11
/200
7
11/2
5/20
0712
/4/2
007
12/2
0/20
07
1/16
/200
81/
30/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/10
/200
8
1/19
/200
91/
24/2
009
1/27
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
50
100
150
200
250
MW06−8A
Sul
fate
(D
) (m
g/l)
UTL Trigger= NSClosure Plan= 50ALASKA WQS = 250N =11%NDs = 0% Distribution:Log Normal: W= 0.9199, p= 0.3176 Limit Calculations: GaussianMax = 42.6000 (Beta = 76.2%)ave =41.2364std =0.701816>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 50
TDS−−MW06−8A
mg/l
Fre
quen
cy
240 250 260 270
0.0
0.5
1.0
1.5
2.0
2.5
3.0
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
240
250
260
270
TDS−−MW06−8A
Shapiro−Wilk: W= 0.8863, p= 0.1542Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(TDS)−−MW06−8A
log(mg/l)
Fre
quen
cy
5.50 5.55 5.60
0.0
0.5
1.0
1.5
2.0
2.5
3.0
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
5.48
5.52
5.56
5.60
log(TDS)−−MW06−8A
Shapiro−Wilk: W= 0.8882, p= 0.1620Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 51
9/11
/200
7
11/2
5/20
0712
/4/2
007
12/2
0/20
07
1/16
/200
81/
30/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/10
/200
8
1/19
/200
91/
24/2
009
1/27
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
250
300
350
400
450
500
MW06−8A
TD
S (
mg/
l)
UTL Trigger= NSClosure Plan= 350ALASKA WQS = 500N =10%NDs = 0% Distribution:Log Normal: W= 0.8882, p= 0.1620 Limit Calculations: GaussianMax = 273.0000 (Beta = 74.1%)ave =256.3std =13.5487>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 52
Total Nitrate−−MW06−8A
mg/l
Fre
quen
cy
0.04 0.06 0.08 0.10 0.12 0.14
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
0.06
0.08
0.10
0.12
Total Nitrate−−MW06−8A
Shapiro−Wilk: W= 0.5142, p= 2.251e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Total Nitrate)−−MW06−8A
log(mg/l)
Fre
quen
cy
−3.2 −3.0 −2.8 −2.6 −2.4 −2.2 −2.0
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
−3.
0−
2.8
−2.
6−
2.4
−2.
2
log(Total Nitrate)−−MW06−8A
Shapiro−Wilk: W= 0.5367, p= 4.221e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 53
9/11
/200
7
11/2
5/20
0712
/4/2
007
12/2
0/20
07
1/16
/200
81/
30/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/10
/200
8
1/19
/200
91/
24/2
009
1/27
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
0
2
4
6
8
10
MW06−8A
Tot
al N
itrat
e (m
g/l)
UTL Trigger= 0.2839Closure Plan= 0.12ALASKA WQS = 10N =11%NDs = 73% Distribution:Non−Parametric Limit Calculations: Helsel+ BootstrapMax = 0.1240 (Beta = 76.2%)ave =0.085std =0.0380395>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 54
Cyanide (WAD)−−MW06−8A
mg/l
Fre
quen
cy
0.00250 0.00255 0.00260 0.00265 0.00270
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
0.00
250
0.00
260
0.00
270
Cyanide (WAD)−−MW06−8A
Shapiro−Wilk: W= 0.5092, p= 1.961e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Cyanide (WAD))−−MW06−8A
log(mg/l)
Fre
quen
cy
−6.00 −5.98 −5.96 −5.94 −5.92 −5.90
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
−5.
98−
5.96
−5.
94−
5.92
log(Cyanide (WAD))−−MW06−8A
Shapiro−Wilk: W= 0.5089, p= 1.94e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 55
9/11
/200
7
11/2
5/20
0712
/4/2
007
12/2
0/20
07
1/16
/200
81/
30/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/10
/200
8
1/19
/200
91/
24/2
009
1/27
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
0.002
0.003
0.004
0.005
MW06−8A
Cya
nide
(W
AD
) (m
g/l)
UTL Trigger= 0.0054Closure Plan= 0.0052ALASKA WQS = 0.0052N =11%NDs = 100% Distribution:Non−Parametric Limit Calculations: NAMax = 0.0027 (Beta = 76.2%)ave =0std =0>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 56
Antimony (T)−−MW06−9A
ug/L
Fre
quen
cy
0.50 0.52 0.54 0.56 0.58 0.60
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
0.50
0.52
0.54
0.56
0.58
0.60
Antimony (T)−−MW06−9A
Shapiro−Wilk: W= 0.5038, p= 1.687e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Antimony (T))−−MW06−9A
log(ug/L)
Fre
quen
cy
−0.70 −0.65 −0.60 −0.55 −0.50
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
−0.
70−
0.65
−0.
60−
0.55
log(Antimony (T))−−MW06−9A
Shapiro−Wilk: W= 0.5061, p= 1.798e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 57
9/11
/200
7
10/2
0/20
07
11/2
2/20
0712
/4/2
007
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/11
/200
8
12/2
4/20
0812
/27/
2008
1/14
/200
91/
20/2
009
1/22
/200
91/
25/2
009
1/28
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
8/25
/200
9
1
2
3
4
5
6
MW06−9A
Ant
imon
y (T
) (u
g/L)
UTL Trigger= 1.2094Closure Plan= 1ALASKA WQS = 6N =11%NDs = 100% Distribution:Non−Parametric Limit Calculations: NAMax = 0.6000 (Beta = 76.2%)ave =0std =0>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 58
Antimony (D)−−MW06−9A
ug/L
Fre
quen
cy
0.50 0.52 0.54 0.56 0.58 0.60
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
0.50
0.52
0.54
0.56
0.58
0.60
Antimony (D)−−MW06−9A
Shapiro−Wilk: W= 0.5038, p= 1.687e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Antimony (D))−−MW06−9A
log(ug/L)
Fre
quen
cy
−0.70 −0.65 −0.60 −0.55 −0.50
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
−0.
70−
0.65
−0.
60−
0.55
log(Antimony (D))−−MW06−9A
Shapiro−Wilk: W= 0.5061, p= 1.798e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 59
9/11
/200
7
10/2
0/20
07
11/2
2/20
0712
/4/2
007
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/11
/200
8
12/2
4/20
0812
/27/
2008
1/14
/200
91/
20/2
009
1/22
/200
91/
25/2
009
1/28
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
8/25
/200
9
1
2
3
4
5
6
MW06−9A
Ant
imon
y (D
) (u
g/L)
UTL Trigger= 1.2094Closure Plan= 1ALASKA WQS = 6N =11%NDs = 100% Distribution:Non−Parametric Limit Calculations: NAMax = 0.6000 (Beta = 76.2%)ave =0std =0>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 60
Arsenic (T)−−MW06−9A
ug/L
Fre
quen
cy
70 75 80 85 90
01
23
45
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
7580
85
Arsenic (T)−−MW06−9A
Shapiro−Wilk: W= 0.9605, p= 0.7914Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Arsenic (T))−−MW06−9A
log(ug/L)
Fre
quen
cy
4.25 4.30 4.35 4.40 4.45 4.50
0.0
0.5
1.0
1.5
2.0
2.5
3.0
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
4.30
4.35
4.40
4.45
log(Arsenic (T))−−MW06−9A
Shapiro−Wilk: W= 0.9527, p= 0.7Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 61
9/11
/200
7
10/2
0/20
07
11/2
2/20
0712
/4/2
007
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/11
/200
8
12/2
4/20
0812
/27/
2008
1/14
/200
91/
20/2
009
1/22
/200
91/
25/2
009
1/28
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
8/25
/200
9
50
100
150
200
MW06−9A
Ars
enic
(T
) (u
g/L)
UTL Trigger= 92.9101Closure Plan= NSALASKA WQS = 10N =10%NDs = 0% Distribution:Normal: W= 0.9605, p= 0.7914 Limit Calculations: GaussianMax = 87.2000 (Beta = 74.1%)ave =79.65std =4.55516>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 62
Arsenic (D)−−MW06−9A
ug/L
Fre
quen
cy
65 70 75 80 85
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
6570
7580
Arsenic (D)−−MW06−9A
Shapiro−Wilk: W= 0.8918, p= 0.1463Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Arsenic (D))−−MW06−9A
log(ug/L)
Fre
quen
cy
4.15 4.20 4.25 4.30 4.35 4.40
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
4.20
4.25
4.30
4.35
log(Arsenic (D))−−MW06−9A
Shapiro−Wilk: W= 0.8885, p= 0.1334Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 63
9/11
/200
7
10/2
0/20
07
11/2
2/20
0712
/4/2
007
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/11
/200
8
12/2
4/20
0812
/27/
2008
1/14
/200
91/
20/2
009
1/22
/200
91/
25/2
009
1/28
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
8/25
/200
9
20
40
60
80
100
120
140
MW06−9A
Ars
enic
(D
) (u
g/L)
UTL Trigger= 89.3445Closure Plan= NSALASKA WQS = 10N =11%NDs = 0% Distribution:Normal: W= 0.8918, p= 0.1463 Limit Calculations: GaussianMax = 80.6000 (Beta = 76.2%)ave =73.1455std =5.75454>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 64
Copper (D)−−MW06−9A
ug/L
Fre
quen
cy
0.50 0.52 0.54 0.56 0.58 0.60
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
0.50
0.52
0.54
0.56
0.58
Copper (D)−−MW06−9A
Shapiro−Wilk: W= 0.5112, p= 2.073e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Copper (D))−−MW06−9A
log(ug/L)
Fre
quen
cy
−0.70 −0.65 −0.60 −0.55 −0.50
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
−0.
65−
0.60
−0.
55
log(Copper (D))−−MW06−9A
Shapiro−Wilk: W= 0.5116, p= 2.095e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 65
9/11
/200
7
10/2
0/20
07
11/2
2/20
0712
/4/2
007
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/11
/200
8
12/2
4/20
0812
/27/
2008
1/14
/200
91/
20/2
009
1/22
/200
91/
25/2
009
1/28
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
8/25
/200
9
0
2
4
6
8
10
12
14
MW06−9A
Cop
per
(D)
(ug/
L)
UTL Trigger= NSClosure Plan= 1.5ALASKA WQS = 14N =11%NDs = 91% Distribution:Non−Parametric Limit Calculations: NAMax = 0.5820 (Beta = 76.2%)ave =0std =0>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 66
Manganese (D)−−MW06−9A
ug/L
Fre
quen
cy
49 50 51 52 53 54 55 56
0.0
0.5
1.0
1.5
2.0
2.5
3.0
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
5051
5253
5455
56
Manganese (D)−−MW06−9A
Shapiro−Wilk: W= 0.9243, p= 0.3557Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Manganese (D))−−MW06−9A
log(ug/L)
Fre
quen
cy
3.90 3.95 4.00
0.0
0.5
1.0
1.5
2.0
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
3.90
3.94
3.98
4.02
log(Manganese (D))−−MW06−9A
Shapiro−Wilk: W= 0.9272, p= 0.3835Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 67
9/11
/200
7
10/2
0/20
07
11/2
2/20
0712
/4/2
007
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/11
/200
8
12/2
4/20
0812
/27/
2008
1/14
/200
91/
20/2
009
1/22
/200
91/
25/2
009
1/28
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
8/25
/200
9
50
100
150
MW06−9A
Man
gane
se (
D)
(ug/
L)
UTL Trigger= 59.0783Closure Plan= NSALASKA WQS = 50N =11%NDs = 0% Distribution:Log Normal: W= 0.9272, p= 0.3835 Limit Calculations: GaussianMax = 56.0000 (Beta = 76.2%)ave =52.2636std =2.42086>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 68
Molybdenum (D)−−MW06−9A
ug/L
Fre
quen
cy
5.00 5.05 5.10 5.15 5.20
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
5.00
5.05
5.10
5.15
5.20
Molybdenum (D)−−MW06−9A
Shapiro−Wilk: W= 0.5316, p= 8.564e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Molybdenum (D))−−MW06−9A
log(ug/L)
Fre
quen
cy
1.60 1.61 1.62 1.63 1.64 1.65
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
1.61
1.62
1.63
1.64
1.65
log(Molybdenum (D))−−MW06−9A
Shapiro−Wilk: W= 0.5322, p= 8.689e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 69
9/11
/200
7
10/2
0/20
07
11/2
2/20
0712
/4/2
007
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/11
/200
8
12/2
4/20
0812
/27/
2008
1/14
/200
91/
20/2
009
1/22
/200
91/
25/2
009
1/28
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
8/25
/200
9
5
6
7
8
9
10
11
MW06−9A
Mol
ybde
num
(D
) (u
g/L)
UTL Trigger= 11.3152Closure Plan= 10ALASKA WQS = 10N =10%NDs = 100% Distribution:Non−Parametric Limit Calculations: NAMax = 5.2000 (Beta = 74.1%)ave =0std =0>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 70
Nickel (D)−−MW06−9A
ug/L
Fre
quen
cy
0.5 1.0 1.5 2.0 2.5 3.0 3.5
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
0.5
1.0
1.5
2.0
2.5
3.0
Nickel (D)−−MW06−9A
Shapiro−Wilk: W= 0.8793, p= 0.128Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Nickel (D))−−MW06−9A
log(ug/L)
Fre
quen
cy
−1.0 −0.5 0.0 0.5 1.0 1.5
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
−0.
50.
00.
51.
0
log(Nickel (D))−−MW06−9A
Shapiro−Wilk: W= 0.8246, p= 0.02884Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 71
9/11
/200
7
10/2
0/20
07
11/2
2/20
0712
/4/2
007
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/11
/200
8
12/2
4/20
0812
/27/
2008
1/14
/200
91/
20/2
009
1/22
/200
91/
25/2
009
1/28
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
8/25
/200
9
0
20
40
60
80
MW06−9A
Nic
kel (
D)
(ug/
L)
UTL Trigger= NSClosure Plan= 5ALASKA WQS = 81N =10%NDs = 0% Distribution:Normal: W= 0.8793, p= 0.128 Limit Calculations: GaussianMax = 3.0300 (Beta = 74.1%)ave =1.439std =0.933577>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 72
Potassium (D)−−MW06−9A
mg/l
Fre
quen
cy
760 780 800 820 840 860 880
0.0
0.5
1.0
1.5
2.0
2.5
3.0
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
760
780
800
820
840
860
880
Potassium (D)−−MW06−9A
Shapiro−Wilk: W= 0.9449, p= 0.6087Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Potassium (D))−−MW06−9A
log(mg/l)
Fre
quen
cy
6.65 6.70 6.75
0.0
0.5
1.0
1.5
2.0
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
6.64
6.68
6.72
6.76
log(Potassium (D))−−MW06−9A
Shapiro−Wilk: W= 0.9451, p= 0.6108Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 73
9/11
/200
7
10/2
0/20
07
11/2
2/20
0712
/4/2
007
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/11
/200
8
12/2
4/20
0812
/27/
2008
1/14
/200
91/
20/2
009
1/22
/200
91/
25/2
009
1/28
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
8/25
/200
9
600
700
800
900
MW06−9A
Pot
assi
um (
D)
(mg/
l)
UTL Trigger= NSClosure Plan= 950ALASKA WQS = NSN =10%NDs = 0% Distribution:Log Normal: W= 0.9451, p= 0.6108 Limit Calculations: GaussianMax = 876.0000 (Beta = 74.1%)ave =816.9std =39.784>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 74
Sodium (D)−−MW06−9A
ug/l
Fre
quen
cy
4300 4400 4500 4600 4700 4800 4900 5000
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
4400
4600
4800
Sodium (D)−−MW06−9A
Shapiro−Wilk: W= 0.9233, p= 0.42Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Sodium (D))−−MW06−9A
log(ug/l)
Fre
quen
cy
8.40 8.45 8.50
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
8.38
8.42
8.46
8.50
log(Sodium (D))−−MW06−9A
Shapiro−Wilk: W= 0.9234, p= 0.4214Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 75
9/11
/200
7
10/2
0/20
07
11/2
2/20
0712
/4/2
007
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/11
/200
8
12/2
4/20
0812
/27/
2008
1/14
/200
91/
20/2
009
1/22
/200
91/
25/2
009
1/28
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
8/25
/200
9
3500
4000
4500
5000
5500
MW06−9A
Sod
ium
(D
) (u
g/l)
UTL Trigger= NSClosure Plan= 5500ALASKA WQS = NSN =9%NDs = 0% Distribution:Log Normal: W= 0.9234, p= 0.4214 Limit Calculations: GaussianMax = 4960.0000 (Beta = 71.7%)ave =4673.33std =203.347>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 76
Sulfate (D)−−MW06−9A
mg/l
Fre
quen
cy
42.0 42.5 43.0 43.5 44.0
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
42.0
42.5
43.0
43.5
Sulfate (D)−−MW06−9A
Shapiro−Wilk: W= 0.9707, p= 0.8937Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Sulfate (D))−−MW06−9A
log(mg/l)
Fre
quen
cy
3.73 3.74 3.75 3.76 3.77 3.78 3.79
0.0
0.5
1.0
1.5
2.0
2.5
3.0
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
3.74
3.75
3.76
3.77
3.78
log(Sulfate (D))−−MW06−9A
Shapiro−Wilk: W= 0.9708, p= 0.8946Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 77
9/11
/200
7
10/2
0/20
07
11/2
2/20
0712
/4/2
007
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/11
/200
8
12/2
4/20
0812
/27/
2008
1/14
/200
91/
20/2
009
1/22
/200
91/
25/2
009
1/28
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
8/25
/200
9
50
100
150
200
250
MW06−9A
Sul
fate
(D
) (m
g/l)
UTL Trigger= NSClosure Plan= 50ALASKA WQS = 250N =11%NDs = 0% Distribution:Log Normal: W= 0.9708, p= 0.8946 Limit Calculations: GaussianMax = 43.9000 (Beta = 76.2%)ave =42.9909std =0.60573>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 78
TDS−−MW06−9A
mg/l
Fre
quen
cy
275 280 285 290 295 300 305
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
280
285
290
295
300
TDS−−MW06−9A
Shapiro−Wilk: W= 0.8774, p= 0.1217Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(TDS)−−MW06−9A
log(mg/l)
Fre
quen
cy
5.62 5.64 5.66 5.68 5.70 5.72
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
5.64
5.66
5.68
5.70
log(TDS)−−MW06−9A
Shapiro−Wilk: W= 0.879, p= 0.1270Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 79
9/11
/200
7
10/2
0/20
07
11/2
2/20
0712
/4/2
007
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/11
/200
8
12/2
4/20
0812
/27/
2008
1/14
/200
91/
20/2
009
1/22
/200
91/
25/2
009
1/28
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
8/25
/200
9
250
300
350
400
450
500
MW06−9A
TD
S (
mg/
l)
UTL Trigger= NSClosure Plan= 350ALASKA WQS = 500N =10%NDs = 0% Distribution:Log Normal: W= 0.879, p= 0.1270 Limit Calculations: GaussianMax = 301.0000 (Beta = 74.1%)ave =292.5std =8.2226>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 80
Total Nitrate−−MW06−9A
mg/l
Fre
quen
cy
0.04 0.06 0.08 0.10 0.12 0.14 0.16
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
0.06
0.08
0.10
0.12
0.14
0.16
Total Nitrate−−MW06−9A
Shapiro−Wilk: W= 0.6239, p= 5.056e−05Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Total Nitrate)−−MW06−9A
log(mg/l)
Fre
quen
cy
−3.0 −2.8 −2.6 −2.4 −2.2 −2.0 −1.8
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
−3.
0−
2.8
−2.
6−
2.4
−2.
2−
2.0
−1.
8
log(Total Nitrate)−−MW06−9A
Shapiro−Wilk: W= 0.6277, p= 5.647e−05Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 81
9/11
/200
7
10/2
0/20
07
11/2
2/20
0712
/4/2
007
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/11
/200
8
12/2
4/20
0812
/27/
2008
1/14
/200
91/
20/2
009
1/22
/200
91/
25/2
009
1/28
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
8/25
/200
9
0
2
4
6
8
10
MW06−9A
Tot
al N
itrat
e (m
g/l)
UTL Trigger= 0.2271Closure Plan= 0.17ALASKA WQS = 10N =11%NDs = 73% Distribution:Non−Parametric Limit Calculations: Helsel+ BootstrapMax = 0.1590 (Beta = 76.2%)ave =0.124667std =0.0330807>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 82
Cyanide (WAD)−−MW06−9A
mg/l
Fre
quen
cy
0.00250 0.00252 0.00254 0.00256 0.00258 0.00260
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
0.00
250
0.00
254
0.00
258
Cyanide (WAD)−−MW06−9A
Shapiro−Wilk: W= 0.5038, p= 1.687e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Cyanide (WAD))−−MW06−9A
log(mg/l)
Fre
quen
cy
−6.00 −5.99 −5.98 −5.97 −5.96 −5.95
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
−5.
99−
5.98
−5.
97−
5.96
log(Cyanide (WAD))−−MW06−9A
Shapiro−Wilk: W= 0.5044, p= 1.712e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 83
9/11
/200
7
10/2
0/20
07
11/2
2/20
0712
/4/2
007
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
24/2
008
4/11
/200
8
12/2
4/20
0812
/27/
2008
1/14
/200
91/
20/2
009
1/22
/200
91/
25/2
009
1/28
/200
91/
31/2
009
2/6/
2009
2/10
/200
92/
12/2
009
2/14
/200
92/
17/2
009
2/19
/200
92/
26/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/24
/200
9
8/25
/200
9
0.002
0.003
0.004
0.005
MW06−9A
Cya
nide
(W
AD
) (m
g/l)
UTL Trigger= 0.0052Closure Plan= 0.0052ALASKA WQS = 0.0052N =11%NDs = 100% Distribution:Non−Parametric Limit Calculations: NAMax = 0.0026 (Beta = 76.2%)ave =0std =0>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 84
Antimony (T)−−MW06−9B
ug/L
Fre
quen
cy
0.50 0.52 0.54 0.56 0.58 0.60
02
46
810
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
0.50
0.52
0.54
0.56
0.58
0.60
Antimony (T)−−MW06−9B
Shapiro−Wilk: W= 0.4876, p= 1.435e−05Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Antimony (T))−−MW06−9B
log(ug/L)
Fre
quen
cy
−0.70 −0.65 −0.60 −0.55 −0.50
02
46
810
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
−0.
70−
0.65
−0.
60−
0.55
log(Antimony (T))−−MW06−9B
Shapiro−Wilk: W= 0.4874, p= 1.428e−05Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 85
9/11
/200
7
10/2
0/20
07
11/6
/200
711
/22/
2007
12/4
/200
7
12/2
1/20
07
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
25/2
008
4/11
/200
8
12/1
1/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
22/2
009
1/24
/200
91/
28/2
009
1/31
/200
92/
6/20
092/
10/2
009
2/12
/200
92/
14/2
009
2/17
/200
92/
20/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/20
/200
97/
24/2
009
7/27
/200
98/
3/20
098/
10/2
009
8/17
/200
98/
25/2
009
1
2
3
4
5
6
MW06−9B
Ant
imon
y (T
) (u
g/L)
UTL Trigger= 1.2108Closure Plan= 1ALASKA WQS = 6N =12%NDs = 92% Distribution:Non−Parametric Limit Calculations: NAMax = 0.6000 (Beta = 77.9%)ave =0std =0>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 86
Antimony (D)−−MW06−9B
ug/L
Fre
quen
cy
0.50 0.51 0.52 0.53 0.54 0.55 0.56 0.57
02
46
810
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
0.50
0.52
0.54
0.56
Antimony (D)−−MW06−9B
Shapiro−Wilk: W= 0.4653, p= 5.58e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Antimony (D))−−MW06−9B
log(ug/L)
Fre
quen
cy
−0.70 −0.68 −0.66 −0.64 −0.62 −0.60 −0.58 −0.56
02
46
810
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
−0.
68−
0.64
−0.
60
log(Antimony (D))−−MW06−9B
Shapiro−Wilk: W= 0.4648, p= 5.541e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 87
9/11
/200
7
10/2
0/20
07
11/6
/200
711
/22/
2007
12/4
/200
7
12/2
1/20
07
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
25/2
008
4/11
/200
8
12/1
1/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
22/2
009
1/24
/200
91/
28/2
009
1/31
/200
92/
6/20
092/
10/2
009
2/12
/200
92/
14/2
009
2/17
/200
92/
20/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/20
/200
97/
24/2
009
7/27
/200
98/
3/20
098/
10/2
009
8/17
/200
98/
25/2
009
1
2
3
4
5
6
MW06−9B
Ant
imon
y (D
) (u
g/L)
UTL Trigger= 1.138Closure Plan= 1ALASKA WQS = 6N =13%NDs = 92% Distribution:Non−Parametric Limit Calculations: NAMax = 0.5680 (Beta = 79.4%)ave =0std =0>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 88
Arsenic (T)−−MW06−9B
ug/L
Fre
quen
cy
220 240 260 280 300 320 340
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
240
260
280
300
320
Arsenic (T)−−MW06−9B
Shapiro−Wilk: W= 0.8981, p= 0.1501Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Arsenic (T))−−MW06−9B
log(ug/L)
Fre
quen
cy
5.4 5.5 5.6 5.7 5.8
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
5.45
5.55
5.65
5.75
log(Arsenic (T))−−MW06−9B
Shapiro−Wilk: W= 0.9125, p= 0.2295Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 89
9/11
/200
7
10/2
0/20
07
11/6
/200
711
/22/
2007
12/4
/200
7
12/2
1/20
07
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
25/2
008
4/11
/200
8
12/1
1/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
22/2
009
1/24
/200
91/
28/2
009
1/31
/200
92/
6/20
092/
10/2
009
2/12
/200
92/
14/2
009
2/17
/200
92/
20/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/20
/200
97/
24/2
009
7/27
/200
98/
3/20
098/
10/2
009
8/17
/200
98/
25/2
009
0
50
100
150
200
250
300
350
MW06−9B
Ars
enic
(T
) (u
g/L)
UTL Trigger= 339.573Closure Plan= NSALASKA WQS = 10N =12%NDs = 0% Distribution:Log Normal: W= 0.9125, p= 0.2295 Limit Calculations: GaussianMax = 323.0000 (Beta = 77.9%)ave =261.167std =28.6573>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 90
Arsenic (D)−−MW06−9B
ug/L
Fre
quen
cy
0 50 100 150 200 250
01
23
45
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
5010
015
020
0
Arsenic (D)−−MW06−9B
Shapiro−Wilk: W= 0.9231, p= 0.2764Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Arsenic (D))−−MW06−9B
log(ug/L)
Fre
quen
cy
3.5 4.0 4.5 5.0 5.5
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
4.0
4.5
5.0
5.5
log(Arsenic (D))−−MW06−9B
Shapiro−Wilk: W= 0.935, p= 0.3954Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 91
9/11
/200
7
10/2
0/20
07
11/6
/200
711
/22/
2007
12/4
/200
7
12/2
1/20
07
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
25/2
008
4/11
/200
8
12/1
1/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
22/2
009
1/24
/200
91/
28/2
009
1/31
/200
92/
6/20
092/
10/2
009
2/12
/200
92/
14/2
009
2/17
/200
92/
20/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/20
/200
97/
24/2
009
7/27
/200
98/
3/20
098/
10/2
009
8/17
/200
98/
25/2
009
0
50
100
150
200
250
300
MW06−9B
Ars
enic
(D
) (u
g/L)
UTL Trigger= 293.434Closure Plan= NSALASKA WQS = 10N =13%NDs = 0% Distribution:Log Normal: W= 0.935, p= 0.3954 Limit Calculations: GaussianMax = 237.0000 (Beta = 79.4%)ave =123.162std =63.7726>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 92
Copper (D)−−MW06−9B
ug/L
Fre
quen
cy
0.5 0.6 0.7 0.8 0.9
02
46
810
12
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
0.50
0.60
0.70
0.80
Copper (D)−−MW06−9B
Shapiro−Wilk: W= 0.4154, p= 2.461e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Copper (D))−−MW06−9B
log(ug/L)
Fre
quen
cy
−0.7 −0.6 −0.5 −0.4 −0.3 −0.2 −0.1
02
46
810
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
−0.
7−
0.6
−0.
5−
0.4
−0.
3−
0.2
log(Copper (D))−−MW06−9B
Shapiro−Wilk: W= 0.4304, p= 3.135e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 93
9/11
/200
7
10/2
0/20
07
11/6
/200
711
/22/
2007
12/4
/200
7
12/2
1/20
07
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
25/2
008
4/11
/200
8
12/1
1/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
22/2
009
1/24
/200
91/
28/2
009
1/31
/200
92/
6/20
092/
10/2
009
2/12
/200
92/
14/2
009
2/17
/200
92/
20/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/20
/200
97/
24/2
009
7/27
/200
98/
3/20
098/
10/2
009
8/17
/200
98/
25/2
009
0
2
4
6
8
10
12
14
MW06−9B
Cop
per
(D)
(ug/
L)
UTL Trigger= 1.6074Closure Plan= 1.5ALASKA WQS = 14N =13%NDs = 92% Distribution:Non−Parametric Limit Calculations: NAMax = 0.8570 (Beta = 79.4%)ave =0std =0>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 94
Manganese (D)−−MW06−9B
ug/L
Fre
quen
cy
200 220 240 260 280 300
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
200
220
240
260
280
Manganese (D)−−MW06−9B
Shapiro−Wilk: W= 0.882, p= 0.07582Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Manganese (D))−−MW06−9B
log(ug/L)
Fre
quen
cy
5.3 5.4 5.5 5.6 5.7
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
5.3
5.4
5.5
5.6
log(Manganese (D))−−MW06−9B
Shapiro−Wilk: W= 0.911, p= 0.1893Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 95
9/11
/200
7
10/2
0/20
07
11/6
/200
711
/22/
2007
12/4
/200
7
12/2
1/20
07
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
25/2
008
4/11
/200
8
12/1
1/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
22/2
009
1/24
/200
91/
28/2
009
1/31
/200
92/
6/20
092/
10/2
009
2/12
/200
92/
14/2
009
2/17
/200
92/
20/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/20
/200
97/
24/2
009
7/27
/200
98/
3/20
098/
10/2
009
8/17
/200
98/
25/2
009
50
100
150
200
250
300
350
MW06−9B
Man
gane
se (
D)
(ug/
L)
UTL Trigger= 314.709Closure Plan= NSALASKA WQS = 50N =13%NDs = 0% Distribution:Log Normal: W= 0.911, p= 0.1893 Limit Calculations: GaussianMax = 294.0000 (Beta = 79.4%)ave =237.923std =28.7589>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 96
Molybdenum (D)−−MW06−9B
ug/L
Fre
quen
cy
5.00 5.02 5.04 5.06 5.08 5.10
02
46
810
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
5.00
5.02
5.04
5.06
5.08
5.10
Molybdenum (D)−−MW06−9B
Shapiro−Wilk: W= 0.4794, p= 1.251e−05Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Molybdenum (D))−−MW06−9B
log(ug/L)
Fre
quen
cy
1.605 1.610 1.615 1.620 1.625 1.630
02
46
810
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
1.61
01.
615
1.62
01.
625
1.63
0
log(Molybdenum (D))−−MW06−9B
Shapiro−Wilk: W= 0.4797, p= 1.257e−05Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 97
9/11
/200
7
10/2
0/20
07
11/6
/200
711
/22/
2007
12/4
/200
7
12/2
1/20
07
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
25/2
008
4/11
/200
8
12/1
1/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
22/2
009
1/24
/200
91/
28/2
009
1/31
/200
92/
6/20
092/
10/2
009
2/12
/200
92/
14/2
009
2/17
/200
92/
20/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/20
/200
97/
24/2
009
7/27
/200
98/
3/20
098/
10/2
009
8/17
/200
98/
25/2
009
5
6
7
8
9
10
MW06−9B
Mol
ybde
num
(D
) (u
g/L)
UTL Trigger= 10Closure Plan= 10ALASKA WQS = 10N =12%NDs = 100% Distribution:Non−Parametric Limit Calculations: NAMax = 5.1000 (Beta = 77.9%)ave =0std =0>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 98
Nickel (D)−−MW06−9B
ug/L
Fre
quen
cy
1.0 1.5 2.0 2.5 3.0 3.5
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
1.0
1.5
2.0
2.5
3.0
Nickel (D)−−MW06−9B
Shapiro−Wilk: W= 0.9277, p= 0.3560Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Nickel (D))−−MW06−9B
log(ug/L)
Fre
quen
cy
0.0 0.2 0.4 0.6 0.8 1.0 1.2
0.0
0.5
1.0
1.5
2.0
2.5
3.0
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
0.0
0.2
0.4
0.6
0.8
1.0
log(Nickel (D))−−MW06−9B
Shapiro−Wilk: W= 0.8969, p= 0.1446Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 99
9/11
/200
7
10/2
0/20
07
11/6
/200
711
/22/
2007
12/4
/200
7
12/2
1/20
07
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
25/2
008
4/11
/200
8
12/1
1/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
22/2
009
1/24
/200
91/
28/2
009
1/31
/200
92/
6/20
092/
10/2
009
2/12
/200
92/
14/2
009
2/17
/200
92/
20/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/20
/200
97/
24/2
009
7/27
/200
98/
3/20
098/
10/2
009
8/17
/200
98/
25/2
009
0
20
40
60
80
MW06−9B
Nic
kel (
D)
(ug/
L)
UTL Trigger= NSClosure Plan= 5ALASKA WQS = 81N =12%NDs = 25% Distribution:Normal: W= 0.9277, p= 0.3560 Limit Calculations: Helsel + BootstrapMax = 3.0900 (Beta = 77.9%)ave =2.22889std =0.548485>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 100
Potassium (D)−−MW06−9B
mg/l
Fre
quen
cy
540 560 580 600 620 640 660 680
0.0
0.5
1.0
1.5
2.0
2.5
3.0
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
540
580
620
660
Potassium (D)−−MW06−9B
Shapiro−Wilk: W= 0.9651, p= 0.8528Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Potassium (D))−−MW06−9B
log(mg/l)
Fre
quen
cy
6.25 6.30 6.35 6.40 6.45 6.50 6.55
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
6.30
6.35
6.40
6.45
6.50
log(Potassium (D))−−MW06−9B
Shapiro−Wilk: W= 0.9682, p= 0.8908Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 101
9/11
/200
7
10/2
0/20
07
11/6
/200
711
/22/
2007
12/4
/200
7
12/2
1/20
07
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
25/2
008
4/11
/200
8
12/1
1/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
22/2
009
1/24
/200
91/
28/2
009
1/31
/200
92/
6/20
092/
10/2
009
2/12
/200
92/
14/2
009
2/17
/200
92/
20/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/20
/200
97/
24/2
009
7/27
/200
98/
3/20
098/
10/2
009
8/17
/200
98/
25/2
009
550
600
650
700
750
MW06−9B
Pot
assi
um (
D)
(mg/
l)
UTL Trigger= NSClosure Plan= 710ALASKA WQS = NSN =12%NDs = 0% Distribution:Log Normal: W= 0.9682, p= 0.8908 Limit Calculations: GaussianMax = 677.0000 (Beta = 77.9%)ave =600.583std =39.622>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 102
Sodium (D)−−MW06−9B
ug/l
Fre
quen
cy
3000 3200 3400 3600 3800
0.0
0.5
1.0
1.5
2.0
2.5
3.0
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
3100
3300
3500
3700
Sodium (D)−−MW06−9B
Shapiro−Wilk: W= 0.942, p= 0.5439Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Sodium (D))−−MW06−9B
log(ug/l)
Fre
quen
cy
8.00 8.05 8.10 8.15 8.20 8.25
01
23
45
6
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
8.05
8.10
8.15
8.20
log(Sodium (D))−−MW06−9B
Shapiro−Wilk: W= 0.9513, p= 0.6612Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 103
9/11
/200
7
10/2
0/20
07
11/6
/200
711
/22/
2007
12/4
/200
7
12/2
1/20
07
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
25/2
008
4/11
/200
8
12/1
1/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
22/2
009
1/24
/200
91/
28/2
009
1/31
/200
92/
6/20
092/
10/2
009
2/12
/200
92/
14/2
009
2/17
/200
92/
20/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/20
/200
97/
24/2
009
7/27
/200
98/
3/20
098/
10/2
009
8/17
/200
98/
25/2
009
3500
4000
4500
5000
MW06−9B
Sod
ium
(D
) (u
g/l)
UTL Trigger= NSClosure Plan= 4000ALASKA WQS = NSN =11%NDs = 0% Distribution:Log Normal: W= 0.9513, p= 0.6612 Limit Calculations: GaussianMax = 3790.0000 (Beta = 76.2%)ave =3406.36std =203.434>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 104
Sulfate (D)−−MW06−9B
mg/l
Fre
quen
cy
30 35 40 45 50
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
3540
45
Sulfate (D)−−MW06−9B
Shapiro−Wilk: W= 0.9532, p= 0.6472Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Sulfate (D))−−MW06−9B
log(mg/l)
Fre
quen
cy
3.4 3.5 3.6 3.7 3.8 3.9
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
3.5
3.6
3.7
3.8
3.9
log(Sulfate (D))−−MW06−9B
Shapiro−Wilk: W= 0.9651, p= 0.83Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 105
9/11
/200
7
10/2
0/20
07
11/6
/200
711
/22/
2007
12/4
/200
7
12/2
1/20
07
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
25/2
008
4/11
/200
8
12/1
1/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
22/2
009
1/24
/200
91/
28/2
009
1/31
/200
92/
6/20
092/
10/2
009
2/12
/200
92/
14/2
009
2/17
/200
92/
20/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/20
/200
97/
24/2
009
7/27
/200
98/
3/20
098/
10/2
009
8/17
/200
98/
25/2
009
50
100
150
200
250
MW06−9B
Sul
fate
(D
) (m
g/l)
UTL Trigger= NSClosure Plan= 53ALASKA WQS = 250N =13%NDs = 0% Distribution:Log Normal: W= 0.9651, p= 0.83 Limit Calculations: GaussianMax = 48.9000 (Beta = 79.4%)ave =38.6462std =5.31862>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 106
TDS−−MW06−9B
mg/l
Fre
quen
cy
210 220 230 240 250 260
01
23
45
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
220
230
240
250
TDS−−MW06−9B
Shapiro−Wilk: W= 0.9565, p= 0.7337Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(TDS)−−MW06−9B
log(mg/l)
Fre
quen
cy
5.35 5.40 5.45 5.50 5.55
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
5.40
5.45
5.50
5.55
log(TDS)−−MW06−9B
Shapiro−Wilk: W= 0.9589, p= 0.768Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 107
9/11
/200
7
10/2
0/20
07
11/6
/200
711
/22/
2007
12/4
/200
7
12/2
1/20
07
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
25/2
008
4/11
/200
8
12/1
1/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
22/2
009
1/24
/200
91/
28/2
009
1/31
/200
92/
6/20
092/
10/2
009
2/12
/200
92/
14/2
009
2/17
/200
92/
20/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/20
/200
97/
24/2
009
7/27
/200
98/
3/20
098/
10/2
009
8/17
/200
98/
25/2
009
250
300
350
400
450
500
MW06−9B
TD
S (
mg/
l)
UTL Trigger= NSClosure Plan= 300ALASKA WQS = 500N =12%NDs = 0% Distribution:Log Normal: W= 0.9589, p= 0.768 Limit Calculations: GaussianMax = 256.0000 (Beta = 77.9%)ave =233.667std =12.4997>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 108
Total Nitrate−−MW06−9B
mg/l
Fre
quen
cy
0.00 0.05 0.10 0.15 0.20 0.25
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
0.05
0.10
0.15
0.20
Total Nitrate−−MW06−9B
Shapiro−Wilk: W= 0.6094, p= 7.897e−05Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Total Nitrate)−−MW06−9B
log(mg/l)
Fre
quen
cy
−3.5 −3.0 −2.5 −2.0 −1.5
02
46
8
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
−3.
0−
2.5
−2.
0
log(Total Nitrate)−−MW06−9B
Shapiro−Wilk: W= 0.6828, p= 0.0003757Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 109
9/11
/200
7
10/2
0/20
07
11/6
/200
711
/22/
2007
12/4
/200
7
12/2
1/20
07
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
25/2
008
4/11
/200
8
12/1
1/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
22/2
009
1/24
/200
91/
28/2
009
1/31
/200
92/
6/20
092/
10/2
009
2/12
/200
92/
14/2
009
2/17
/200
92/
20/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/20
/200
97/
24/2
009
7/27
/200
98/
3/20
098/
10/2
009
8/17
/200
98/
25/2
009
0
2
4
6
8
10
MW06−9B
Tot
al N
itrat
e (m
g/l)
UTL Trigger= NSClosure Plan= 0.23ALASKA WQS = 10N =13%NDs = 0% Distribution:Non−Parametric Limit Calculations: Helsel + BootstrapMax = 0.2020 (Beta = 79.4%)ave =0.0754615std =0.0523137>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 110
Cyanide (WAD)−−MW06−9B
mg/l
Fre
quen
cy
0.00250 0.00255 0.00260 0.00265 0.00270
02
46
810
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
0.00
250
0.00
260
0.00
270
Cyanide (WAD)−−MW06−9B
Shapiro−Wilk: W= 0.4578, p= 4.921e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Cyanide (WAD))−−MW06−9B
log(mg/l)
Fre
quen
cy
−6.00 −5.98 −5.96 −5.94 −5.92 −5.90
02
46
810
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
−5.
98−
5.96
−5.
94−
5.92
log(Cyanide (WAD))−−MW06−9B
Shapiro−Wilk: W= 0.4588, p= 5.003e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 111
9/11
/200
7
10/2
0/20
07
11/6
/200
711
/22/
2007
12/4
/200
7
12/2
1/20
07
1/17
/200
81/
31/2
008
2/19
/200
82/
28/2
008
3/13
/200
83/
25/2
008
4/11
/200
8
12/1
1/20
0812
/24/
2008
12/2
7/20
081/
1/20
091/
14/2
009
1/20
/200
91/
22/2
009
1/24
/200
91/
28/2
009
1/31
/200
92/
6/20
092/
10/2
009
2/12
/200
92/
14/2
009
2/17
/200
92/
20/2
009
3/3/
2009
3/7/
2009
3/27
/200
9
4/18
/200
9
6/17
/200
9
7/20
/200
97/
24/2
009
7/27
/200
98/
3/20
098/
10/2
009
8/17
/200
98/
25/2
009
0.002
0.003
0.004
0.005
MW06−9B
Cya
nide
(W
AD
) (m
g/l)
UTL Trigger= 0.0054Closure Plan= 0.0052ALASKA WQS = 0.0052N =13%NDs = 100% Distribution:Non−Parametric Limit Calculations: NAMax = 0.0027 (Beta = 79.4%)ave =0std =0>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 112
Antimony (T)−−MW07−11
ug/L
Fre
quen
cy
0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
02
46
810
1214
−2 −1 0 1 2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
Antimony (T)−−MW07−11
Shapiro−Wilk: W= 0.5892, p= 2.28e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Antimony (T))−−MW07−11
log(ug/L)
Fre
quen
cy
−1.2 −1.0 −0.8 −0.6 −0.4 −0.2 0.0
02
46
810
1214
−2 −1 0 1 2
−1.
0−
0.8
−0.
6−
0.4
−0.
20.
0
log(Antimony (T))−−MW07−11
Shapiro−Wilk: W= 0.6962, p= 3.501e−05Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 113
4/26
/200
7
5/31
/200
7
6/14
/200
7
6/26
/200
7
7/9/
2007
7/24
/200
7
8/8/
2007
8/28
/200
79/
7/20
07
9/28
/200
710
/2/2
007
10/1
7/20
07
10/3
1/20
07
11/1
6/20
07
12/1
2/20
07
1/15
/200
81/
25/2
008
2/8/
2008
2/20
/200
8
3/9/
2008
6/18
/200
9
7/22
/200
9
8/12
/200
9
8/25
/200
9
0
5
10
15
20
25
MW07−11
Ant
imon
y (T
) (u
g/L)
UTL Trigger= 3.3061Closure Plan= NSALASKA WQS = 6N =20%NDs = 70% Distribution:Non−Parametric Limit Calculations: Helsel+ BootstrapMax = 1.0000 (Beta = 86.1%)ave =0.453833std =0.267903>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 114
Antimony (D)−−MW07−11
ug/L
Fre
quen
cy
0.40 0.45 0.50
05
1015
−2 −1 0 1 2
0.40
0.45
0.50
Antimony (D)−−MW07−11
Shapiro−Wilk: W= 0.3291, p= 1.255e−08Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Antimony (D))−−MW07−11
log(ug/L)
Fre
quen
cy
−1.0 −0.9 −0.8 −0.7 −0.6
05
1015
−2 −1 0 1 2
−0.
95−
0.85
−0.
75−
0.65
log(Antimony (D))−−MW07−11
Shapiro−Wilk: W= 0.316, p= 1.004e−08Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 115
4/26
/200
7
5/31
/200
7
6/14
/200
7
6/26
/200
7
7/9/
2007
7/24
/200
7
8/8/
2007
8/28
/200
79/
7/20
07
9/28
/200
710
/2/2
007
10/1
7/20
07
10/3
1/20
07
11/1
6/20
07
12/1
2/20
07
1/15
/200
81/
25/2
008
2/8/
2008
2/20
/200
8
3/9/
2008
6/18
/200
9
7/22
/200
9
8/12
/200
9
8/25
/200
9
0
5
10
15
20
MW07−11
Ant
imon
y (D
) (u
g/L)
UTL Trigger= 9.9122Closure Plan= NSALASKA WQS = 6N =20%NDs = 90% Distribution:Non−Parametric Limit Calculations: NAMax = 0.5280 (Beta = 86.1%)ave =0.4515std =0.108187>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 116
Arsenic (T)−−MW07−11
ug/L
Fre
quen
cy
55 60 65 70 75 80 85
02
46
8
−2 −1 0 1 2
6065
7075
80
Arsenic (T)−−MW07−11
Shapiro−Wilk: W= 0.9738, p= 0.8314Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Arsenic (T))−−MW07−11
log(ug/L)
Fre
quen
cy
4.1 4.2 4.3 4.4
01
23
45
67
−2 −1 0 1 2
4.10
4.20
4.30
4.40
log(Arsenic (T))−−MW07−11
Shapiro−Wilk: W= 0.9732, p= 0.8211Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 117
4/26
/200
7
5/31
/200
7
6/14
/200
7
6/26
/200
7
7/9/
2007
7/24
/200
7
8/8/
2007
8/28
/200
79/
7/20
07
9/28
/200
710
/2/2
007
10/1
7/20
07
10/3
1/20
07
11/1
6/20
07
12/1
2/20
07
1/15
/200
81/
25/2
008
2/8/
2008
2/20
/200
8
3/9/
2008
6/18
/200
9
7/22
/200
9
8/12
/200
9
8/25
/200
9
20
40
60
80
MW07−11
Ars
enic
(T
) (u
g/L)
UTL Trigger= 83.8088Closure Plan= NSALASKA WQS = 10N =20%NDs = 0% Distribution:Normal: W= 0.9738, p= 0.8314 Limit Calculations: GaussianMax = 82.2000 (Beta = 86.1%)ave =69.19std =6.10133>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 118
Arsenic (D)−−MW07−11
ug/L
Fre
quen
cy
45 50 55 60 65 70 75 80
01
23
45
6
−2 −1 0 1 2
4550
5560
6570
75
Arsenic (D)−−MW07−11
Shapiro−Wilk: W= 0.9214, p= 0.1056Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Arsenic (D))−−MW07−11
log(ug/L)
Fre
quen
cy
3.8 3.9 4.0 4.1 4.2 4.3 4.4
01
23
45
6
−2 −1 0 1 2
3.9
4.0
4.1
4.2
4.3
log(Arsenic (D))−−MW07−11
Shapiro−Wilk: W= 0.9039, p= 0.04877Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 119
4/26
/200
7
5/31
/200
7
6/14
/200
7
6/26
/200
7
7/9/
2007
7/24
/200
7
8/8/
2007
8/28
/200
79/
7/20
07
9/28
/200
710
/2/2
007
10/1
7/20
07
10/3
1/20
07
11/1
6/20
07
12/1
2/20
07
1/15
/200
81/
25/2
008
2/8/
2008
2/20
/200
8
3/9/
2008
6/18
/200
9
7/22
/200
9
8/12
/200
9
8/25
/200
9
20
40
60
80
MW07−11
Ars
enic
(D
) (u
g/L)
UTL Trigger= 83.7547Closure Plan= NSALASKA WQS = 10N =20%NDs = 0% Distribution:Normal: W= 0.9214, p= 0.1056 Limit Calculations: GaussianMax = 76.6000 (Beta = 86.1%)ave =61.855std =9.14011>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 120
Copper (D)−−MW07−11
ug/L
Fre
quen
cy
0.4 0.6 0.8 1.0
02
46
8
−2 −1 0 1 2
0.4
0.6
0.8
1.0
Copper (D)−−MW07−11
Shapiro−Wilk: W= 0.8558, p= 0.006671Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Copper (D))−−MW07−11
log(ug/L)
Fre
quen
cy
−1.2 −1.0 −0.8 −0.6 −0.4 −0.2 0.0 0.2
02
46
8
−2 −1 0 1 2
−1.
0−
0.6
−0.
20.
0
log(Copper (D))−−MW07−11
Shapiro−Wilk: W= 0.9306, p= 0.1589Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 121
4/26
/200
7
5/31
/200
7
6/14
/200
7
6/26
/200
7
7/9/
2007
7/24
/200
7
8/8/
2007
8/28
/200
79/
7/20
07
9/28
/200
710
/2/2
007
10/1
7/20
07
10/3
1/20
07
11/1
6/20
07
12/1
2/20
07
1/15
/200
81/
25/2
008
2/8/
2008
2/20
/200
8
3/9/
2008
6/18
/200
9
7/22
/200
9
8/12
/200
9
8/25
/200
9
0
2
4
6
8
10
12
14
MW07−11
Cop
per
(D)
(ug/
L)
UTL Trigger= 1.3609Closure Plan= NSALASKA WQS = 14N =20%NDs = 15% Distribution:Log Normal: W= 0.9306, p= 0.1589 Limit Calculations: Cohens + GaussianMax = 1.0900 (Beta = 86.1%)ave =0.596059std =0.201905>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 122
Manganese (D)−−MW07−11
ug/L
Fre
quen
cy
25 30 35 40
01
23
4
−2 −1 0 1 2
2530
3540
Manganese (D)−−MW07−11
Shapiro−Wilk: W= 0.9592, p= 0.528Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Manganese (D))−−MW07−11
log(ug/L)
Fre
quen
cy
3.2 3.3 3.4 3.5 3.6 3.7 3.8
01
23
45
−2 −1 0 1 2
3.3
3.4
3.5
3.6
3.7
log(Manganese (D))−−MW07−11
Shapiro−Wilk: W= 0.9575, p= 0.4958Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 123
4/26
/200
7
5/31
/200
7
6/14
/200
7
6/26
/200
7
7/9/
2007
7/24
/200
7
8/8/
2007
8/28
/200
79/
7/20
07
9/28
/200
710
/2/2
007
10/1
7/20
07
10/3
1/20
07
11/1
6/20
07
12/1
2/20
07
1/15
/200
81/
25/2
008
2/8/
2008
2/20
/200
8
3/9/
2008
6/18
/200
9
7/22
/200
9
8/12
/200
9
8/25
/200
9
25
30
35
40
45
50
MW07−11
Man
gane
se (
D)
(ug/
L)
UTL Trigger= 43.6807Closure Plan= NSALASKA WQS = 50N =20%NDs = 0% Distribution:Normal: W= 0.9592, p= 0.528 Limit Calculations: GaussianMax = 40.7000 (Beta = 86.1%)ave =33.09std =4.42016>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 124
Molybdenum (D)−−MW07−11
ug/L
Fre
quen
cy
5.00 5.05 5.10 5.15 5.20
05
1015
−2 −1 0 1 2
5.00
5.05
5.10
5.15
5.20
Molybdenum (D)−−MW07−11
Shapiro−Wilk: W= 0.3536, p= 1.926e−08Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Molybdenum (D))−−MW07−11
log(ug/L)
Fre
quen
cy
1.61 1.62 1.63 1.64 1.65
05
1015
−2 −1 0 1 2
1.61
1.62
1.63
1.64
1.65
log(Molybdenum (D))−−MW07−11
Shapiro−Wilk: W= 0.3541, p= 1.942e−08Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 125
4/26
/200
7
5/31
/200
7
6/14
/200
7
6/26
/200
7
7/9/
2007
7/24
/200
7
8/8/
2007
8/28
/200
79/
7/20
07
9/28
/200
710
/2/2
007
10/1
7/20
07
10/3
1/20
07
11/1
6/20
07
12/1
2/20
07
1/15
/200
81/
25/2
008
2/8/
2008
2/20
/200
8
3/9/
2008
6/18
/200
9
7/22
/200
9
8/12
/200
9
8/25
/200
9
5
6
7
8
9
10
MW07−11
Mol
ybde
num
(D
) (u
g/L)
UTL Trigger= 10Closure Plan= NSALASKA WQS = 10N =20%NDs = 100% Distribution:Non−Parametric Limit Calculations: NAMax = 5.2000 (Beta = 86.1%)ave =0std =0>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 126
Nickel (D)−−MW07−11
ug/L
Fre
quen
cy
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
01
23
45
6
−2 −1 0 1 2
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Nickel (D)−−MW07−11
Shapiro−Wilk: W= 0.9126, p= 0.07136Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Nickel (D))−−MW07−11
log(ug/L)
Fre
quen
cy
0.0 0.5 1.0 1.5
01
23
45
−2 −1 0 1 2
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
log(Nickel (D))−−MW07−11
Shapiro−Wilk: W= 0.9629, p= 0.6037Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 127
4/26
/200
7
5/31
/200
7
6/14
/200
7
6/26
/200
7
7/9/
2007
7/24
/200
7
8/8/
2007
8/28
/200
79/
7/20
07
9/28
/200
710
/2/2
007
10/1
7/20
07
10/3
1/20
07
11/1
6/20
07
12/1
2/20
07
1/15
/200
81/
25/2
008
2/8/
2008
2/20
/200
8
3/9/
2008
6/18
/200
9
7/22
/200
9
8/12
/200
9
8/25
/200
9
0
20
40
60
80
MW07−11
Nic
kel (
D)
(ug/
L)
UTL Trigger= 3.849Closure Plan= NSALASKA WQS = 81N =20%NDs = 0% Distribution:Log Normal: W= 0.9629, p= 0.6037 Limit Calculations: GaussianMax = 4.1800 (Beta = 86.1%)ave =1.9605std =0.788206>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 128
Potassium (D)−−MW07−11
mg/l
Fre
quen
cy
850 900 950 1000 1050 1100 1150
01
23
45
67
−2 −1 0 1 2
850
900
950
1000
1100
Potassium (D)−−MW07−11
Shapiro−Wilk: W= 0.9737, p= 0.8294Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Potassium (D))−−MW07−11
log(mg/l)
Fre
quen
cy
6.75 6.80 6.85 6.90 6.95 7.00 7.05
01
23
45
−2 −1 0 1 2
6.75
6.80
6.85
6.90
6.95
7.00
7.05
log(Potassium (D))−−MW07−11
Shapiro−Wilk: W= 0.9715, p= 0.7872Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 129
4/26
/200
7
5/31
/200
7
6/14
/200
7
6/26
/200
7
7/9/
2007
7/24
/200
7
8/8/
2007
8/28
/200
79/
7/20
07
9/28
/200
710
/2/2
007
10/1
7/20
07
10/3
1/20
07
11/1
6/20
07
12/1
2/20
07
1/15
/200
81/
25/2
008
2/8/
2008
2/20
/200
8
3/9/
2008
6/18
/200
9
7/22
/200
9
8/12
/200
9
8/25
/200
9
850
900
950
1000
1050
1100
1150
MW07−11
Pot
assi
um (
D)
(mg/
l)
UTL Trigger= 1182.64Closure Plan= NSALASKA WQS = NSN =20%NDs = 0% Distribution:Normal: W= 0.9737, p= 0.8294 Limit Calculations: GaussianMax = 1140.0000 (Beta = 86.1%)ave =992.8std =79.2322>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 130
Sodium (D)−−MW07−11
ug/l
Fre
quen
cy
30000 35000 40000 45000 50000
01
23
4
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
3600
040
000
4400
048
000
Sodium (D)−−MW07−11
Shapiro−Wilk: W= 0.9262, p= 0.4116Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Sodium (D))−−MW07−11
log(ug/l)
Fre
quen
cy
10.45 10.50 10.55 10.60 10.65 10.70 10.75 10.80
0.0
0.5
1.0
1.5
2.0
2.5
3.0
−1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
10.4
510
.55
10.6
510
.75
log(Sodium (D))−−MW07−11
Shapiro−Wilk: W= 0.9287, p= 0.4348Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 131
4/26
/200
7
5/31
/200
7
6/14
/200
7
6/26
/200
7
7/9/
2007
7/24
/200
7
8/8/
2007
8/28
/200
79/
7/20
07
9/28
/200
710
/2/2
007
10/1
7/20
07
10/3
1/20
07
11/1
6/20
07
12/1
2/20
07
1/15
/200
81/
25/2
008
2/8/
2008
2/20
/200
8
3/9/
2008
6/18
/200
9
7/22
/200
9
8/12
/200
9
8/25
/200
9
35000
40000
45000
50000
55000
MW07−11
Sod
ium
(D
) (u
g/l)
UTL Trigger= 55734.2Closure Plan= NSALASKA WQS = NSN =10%NDs = 0% Distribution:Log Normal: W= 0.9287, p= 0.4348 Limit Calculations: GaussianMax = 48800.0000 (Beta = 74.1%)ave =41540std =4876.06>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 132
Sulfate (D)−−MW07−11
mg/l
Fre
quen
cy
100 105 110
01
23
4
−2 −1 0 1 2
100
105
110
Sulfate (D)−−MW07−11
Shapiro−Wilk: W= 0.9707, p= 0.77Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Sulfate (D))−−MW07−11
log(mg/l)
Fre
quen
cy
4.60 4.65 4.70
01
23
4
−2 −1 0 1 2
4.60
4.64
4.68
4.72
log(Sulfate (D))−−MW07−11
Shapiro−Wilk: W= 0.9712, p= 0.7799Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 133
4/26
/200
7
5/31
/200
7
6/14
/200
7
6/26
/200
7
7/9/
2007
7/24
/200
7
8/8/
2007
8/28
/200
79/
7/20
07
9/28
/200
710
/2/2
007
10/1
7/20
07
10/3
1/20
07
11/1
6/20
07
12/1
2/20
07
1/15
/200
81/
25/2
008
2/8/
2008
2/20
/200
8
3/9/
2008
6/18
/200
9
7/22
/200
9
8/12
/200
9
8/25
/200
9
100
150
200
250
MW07−11
Sul
fate
(D
) (m
g/l)
UTL Trigger= 115.137Closure Plan= NSALASKA WQS = 250N =20%NDs = 0% Distribution:Log Normal: W= 0.9712, p= 0.7799 Limit Calculations: GaussianMax = 114.0000 (Beta = 86.1%)ave =105.425std =4.05357>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 134
TDS−−MW07−11
mg/l
Fre
quen
cy
350 360 370 380 390 400 410 420
01
23
45
6
−2 −1 0 1 2
360
370
380
390
400
410
420
TDS−−MW07−11
Shapiro−Wilk: W= 0.9417, p= 0.258Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(TDS)−−MW07−11
log(mg/l)
Fre
quen
cy
5.90 5.95 6.00
02
46
8
−2 −1 0 1 2
5.90
5.95
6.00
log(TDS)−−MW07−11
Shapiro−Wilk: W= 0.9357, p= 0.1984Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 135
4/26
/200
7
5/31
/200
7
6/14
/200
7
6/26
/200
7
7/9/
2007
7/24
/200
7
8/8/
2007
8/28
/200
79/
7/20
07
9/28
/200
710
/2/2
007
10/1
7/20
07
10/3
1/20
07
11/1
6/20
07
12/1
2/20
07
1/15
/200
81/
25/2
008
2/8/
2008
2/20
/200
8
3/9/
2008
6/18
/200
9
7/22
/200
9
8/12
/200
9
8/25
/200
9
360
380
400
420
440
460
480
500
MW07−11
TD
S (
mg/
l)
UTL Trigger= 428.77Closure Plan= NSALASKA WQS = 500N =20%NDs = 0% Distribution:Normal: W= 0.9417, p= 0.258 Limit Calculations: GaussianMax = 419.0000 (Beta = 86.1%)ave =389.45std =16.4108>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 136
Total Nitrate−−MW07−11
mg/l
Fre
quen
cy
0.05 0.10 0.15
02
46
810
1214
−2 −1 0 1 2
0.04
0.08
0.12
0.16
Total Nitrate−−MW07−11
Shapiro−Wilk: W= 0.5767, p= 1.704e−06Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Total Nitrate)−−MW07−11
log(mg/l)
Fre
quen
cy
−3.0 −2.5 −2.0
02
46
810
12
−2 −1 0 1 2
−3.
0−
2.5
−2.
0
log(Total Nitrate)−−MW07−11
Shapiro−Wilk: W= 0.6895, p= 2.91e−05Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 137
4/26
/200
7
5/31
/200
7
6/14
/200
7
6/26
/200
7
7/9/
2007
7/24
/200
7
8/8/
2007
8/28
/200
79/
7/20
07
9/28
/200
710
/2/2
007
10/1
7/20
07
10/3
1/20
07
11/1
6/20
07
12/1
2/20
07
1/15
/200
81/
25/2
008
2/8/
2008
2/20
/200
8
3/9/
2008
6/18
/200
9
7/22
/200
9
8/12
/200
9
8/25
/200
9
0
2
4
6
8
10
MW07−11
Tot
al N
itrat
e (m
g/l)
UTL Trigger= 0.256Closure Plan= NSALASKA WQS = 10N =20%NDs = 55% Distribution:Non−Parametric Limit Calculations: Helsel + BootstrapMax = 0.1610 (Beta = 86.1%)ave =0.075std =0.0450874>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 138
Cyanide (WAD)−−MW07−11
mg/l
Fre
quen
cy
0.00250 0.00255 0.00260 0.00265 0.00270
05
1015
−2 −1 0 1 2
0.00
250
0.00
260
0.00
270
Cyanide (WAD)−−MW07−11
Shapiro−Wilk: W= 0.365, p= 3.914e−08Theoretical Quantiles
Sam
ple
Qua
ntile
s
log(Cyanide (WAD))−−MW07−11
log(mg/l)
Fre
quen
cy
−6.00 −5.98 −5.96 −5.94 −5.92
05
1015
−2 −1 0 1 2
−5.
98−
5.96
−5.
94−
5.92
log(Cyanide (WAD))−−MW07−11
Shapiro−Wilk: W= 0.3659, p= 3.976e−08Theoretical Quantiles
Sam
ple
Qua
ntile
s
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 139
4/26
/200
7
5/31
/200
7
6/14
/200
7
6/26
/200
7
7/9/
2007
7/24
/200
7
8/8/
2007
8/28
/200
79/
7/20
07
9/28
/200
710
/2/2
007
10/1
7/20
07
10/3
1/20
07
11/1
6/20
07
12/1
2/20
07
1/15
/200
81/
25/2
008
2/8/
2008
2/20
/200
8
3/9/
2008
6/18
/200
9
7/22
/200
9
8/12
/200
9
8/25
/200
9
0.0020
0.0025
0.0030
0.0035
0.0040
0.0045
0.0050
MW07−11
Cya
nide
(W
AD
) (m
g/l)
UTL Trigger= 0.0052Closure Plan= NSALASKA WQS = 0.0052N =19%NDs = 100% Distribution:Non−Parametric Limit Calculations: NAMax = 0.0027 (Beta = 85.4%)ave =0std =0>DL<DL
Rock Creek GW Baseline Water Quality Statistics 2010-02-05
Tetra Tech Project No. 114-310979 140