sir20125023 AppendixD

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					Appendix D: Results of normality tests and trend analyses

This is Appendix D in "Paces, J.B., Elliott, P.E., Fenelon, J.M., Laczniak, R.J., and Moreo, M.T., 2012, Transient effects on groundwater chemical compositions from pumping of
supply wells at the Nevada National Security Site, Nye County, Nevada, 1951-2008: U.S. Geological Survey Scientific Investigations Report 2012-5023, 108 p."

Results of statistical tests of normality and trend based on available conductance and major ion concentrations from water-supply wells on the Nevada National Security Site (NNSS)
are presented in a series of worksheets (organized by borehole name as shown in the table below) in this Microsoft ® Excel workbook. Tests were performed using commercial
software (Minitab® v.15.1.30 and AquaChem® v.2010.1.83). Results given for different normality tests are shown as either “passed” or “failed” depending on whether resulting p-
values were greater than or less than, respectively, the critical value of 0.05 corresponding to the 95-percent confidence limit. Different tests for normality emphasize different
statistical aspects of a sample set and do not always return the same results.

Appendix number     USGS borehole name
D-1                 Army 1 WW
D-2                 J-12 WW
D-3                 J-13 WW
D-4                 U-20 WW
D-5                 UE-5c WW
D-6                 UE-15d WW
D-7                 UE-16d WW
None                UE-19c WW
D-8                 WW-2
D-9                 WW-3
D-10                WW-4
D-11                WW-4A
D-12                WW-5A
D-13                WW-5B
D-14                WW-5C
D-15                WW-8
D-16                WW-A
D-17                WW-C
D-18                WW-C-1


The Mann-Kendall test is a nonparametric estimator of trend (Gilbert, 1987; Gibbons, 1995; Helsel and Hirsch, 2002). Two values, S and Z, are computed by the procedure and are
listed in this appendix. The S value represents the number of times that the differences in a time-ranked sequence of values are greater than (1), less than (-1), or equal to (0) zero.
Positive S values indicate possible increasing trends and negative S values indicate possible decreasing trends with time. The Z statistic represents an estimate of the variance of S,
which is used to compute the standard normal cumulative distribution probability (Prob %) for each constituent. A probability less than 5.00 percent allows the null hypothesis (there
is no trend with time) to be rejected, and the sign of the S statistic determines if the trend is increasing or decreasing.

Sen's nonparametric estimator of slope computes the median of all concentration-compared-to-time data pairs (Gilbert, 1997). This value is given as the Slope in the tables in this
appendix. Variances for these multiple slopes are used to establish upper and lower limits of confidence for the specified probability level (95 percent). Trend results are reported as
significant if the confidence intervals are both positive or both negative numbers, and an increasing or decreasing trend, respectively, is reported.
Linear regression results are calculated using two parametric methods. The first test uses simple linear regression and calculates (1) the coefficient of variation (R 2), which is an
estimate of the degree of covariation between concentration and time (1=perfect correlation, 0=zero correlation) and (2) the p-value representing the appropriateness of rejecting the
null hypothesis of no trend with time. If p-values are less than 0.05, then there is a 95 percent probability that data indicate an increasing or decreasing trend, depending on the sign
of the slope. The validity of linear regression results depends on whether or not the regression residuals are normally distributed. This result is given in this appendix as either
"passed" or "failed" and uses the Anderson-Darling test for normality.
The second linear regression test uses 2-error regression models (Ludwig, 2003) that consider uncertainty in the X and Y values using the limits specified for analytical error. These
models produce a best-fit slope and 95 percent uncertainty value. If the ±95 percent value exceeds the slope value, the null hypothesis is accepted (no trend). If the slope value
exceeds the 95 percent value, an increasing or decreasing trend is indicated depending on the sign of the slope. The "Result" column is an overall evaluation of trend considering
the criteria given by the p-value, residual normality, and ±95 percent slope estimator, and is unqueried if all outcomes are definitive and queried if one of the criteria does not yield a
definitive outcome.
Appendix D-1: Results of normality tests and trend analyses
Army 1 WW
Confidence level = 95%
Start date = 7/10/1962
End date = 4/4/2001
                                                                                                                                                                                              Linear Regression
                                    Normality tests                       Years              Mann-Kendall                   Sen's nonparametric estimator of slope        Least squares fit      York fit
                Total  Student. Andersen- Ryan-       Kolmogorov-  Total   with                                                       Lower                                                  Slope                Residual
                                                                                                                                                                                2
Constituent    samples Range     Darling    Joiner      Smirnov   samples Data    S      Z       Prob(%)     Result       Slope        Limit   Upper Limit     Result       R       P-value (mg/L/yr) ±95%        normality    Result
Conductivity     25      failed    failed    failed      failed     23     17     56    1.453     7.32      no trend     2.15E-03    -1.68E-04   3.56E-03     no trend     0.169      0.041   0.800     0.750     passed      increasing
Ca               24      failed    failed   passed       failed     23     18     -44   -1.14     12.78     no trend     -2.78E-05   -2.04E-04   0.00E+00     no trend     0.057      0.272   -0.300    0.058     passed      no trend
Mg               24      failed    failed    failed      failed     23     18     -23   -0.58     28.05     no trend     0.00E+00    -9.92E-05   2.28E-05     no trend     0.014      0.592   -0.011    0.035      failed     no trend
Na               23      passed   passed    passed      passed      22     17     77    2.143     1.61      increasing   2.43E-04    5.59E-05    3.95E-04    increasing    0.200      0.032   0.076     0.075      failed     increasing
K                24      failed   passed    passed      passed      23     17     3     0.053     47.89     no trend     0.00E+00    -3.84E-05   5.04E-05     no trend     0.010      0.645   0.006     0.021     passed      no trend
Cl               26      passed    failed    failed      failed     25     19     70    1.612     5.34      no trend     1.37E-04    0.00E+00    3.33E-04     no trend     0.083      0.153   0.060     0.076      failed     no trend
HCO3             25      passed    failed    failed      failed     24     18     58    1.415     7.85      no trend     2.27E-04    0.00E+00    4.03E-04     no trend     0.021      0.490   0.070     0.220      failed     no trend
SO4              24      failed   passed     failed     passed      23     18     51    1.321     9.32      no trend     1.32E-04    0.00E+00    3.11E-04     no trend     0.009      0.657   0.028     0.089     passed      no trend
SiO2             19      passed   passed    passed      passed      18     14     37    1.366     8.61      no trend     1.21E-04    0.00E+00    2.40E-04     no trend     0.067      0.283   0.024     0.050     passed      no trend
F                21      failed    failed    failed      failed     20     18     13    0.39      34.84     no trend     0.00E+00    -3.44E-06   1.31E-05     no trend     0.094      0.177   0.005     0.005     passed      no trend


Army 1 WW
Confidence level = 95%
Start date = 8/1/2001
End date = 7/13/2005
                                                                                                                                                                                              Linear Regression
                                    Normality tests                       Years              Mann-Kendall                   Sen's nonparametric estimator of slope        Least squares fit      York fit
                Total  Student. Andersen- Ryan-       Kolmogorov-  Total   with                                                       Lower                                                  Slope                Residual
Constituent    samples Range     Darling    Joiner      Smirnov   samples Data    S      Z       Prob(%)     Result       Slope        Limit   Upper Limit     Result       R2      P-value (mg/L/yr) ±95%        normality    Result
Conductivity     18      failed   passed    passed      passed      17      5     98    3.996      0        increasing   6.97E-02    5.37E-02    8.74E-02    increasing    0.992      0.000   25.700    6.100     passed      increasing
Ca               10      passed   passed    passed      passed      9       4     19    1.877     3.03      increasing   3.42E-03    4.21E-04    6.04E-03    increasing    0.331      0.082   1.500     1.600      failed     no trend
Mg               10      passed   passed    passed      passed      9       4     19    1.877     3.03      increasing   3.12E-03    5.83E-04    4.36E-03    increasing    0.428      0.040   0.720     0.690     passed      increasing
Na               10      passed   passed    passed      passed      9       4     28    2.815     0.24      increasing   6.83E-03    3.79E-03    8.30E-03    increasing    0.859      0.000   3.120     0.590     passed      increasing
K                10      passed   passed    passed      passed      9       4     10    0.938     17.41     no trend     7.56E-04    -6.23E-04   1.03E-03     no trend     0.055      0.516   0.071     0.170     passed      no trend
Cl               10      passed   passed    passed      passed      9       4     24    2.398     0.82      increasing   2.43E-02    1.40E-02    3.72E-02    increasing    0.751      0.001   8.300     3.900     passed      increasing
HCO3             11      passed   passed    passed      passed      9       4     -6    -0.52     30.01     no trend     -4.79E-03   -1.24E-02   3.02E-03     no trend     0.296      0.083   -2.200    2.900     passed      no trend
SO4              11      failed   passed    passed      passed      9       4     6     0.521     30.11     no trend     1.37E-03    -1.76E-03   6.20E-03     no trend     0.015      0.722   -0.220    0.980     passed      no trend
SiO2             10      passed   passed    passed      passed      9       4     11    1.043     14.86     no trend     1.91E-03    -6.86E-04   3.23E-03     no trend     0.611      0.008   0.630     0.310     passed      increasing
F                10      passed   passed    passed      passed      9       4     3     0.21      41.7      no trend     4.58E-06    -1.06E-04   9.68E-05     no trend     0.136      0.295   -0.014    0.028     passed      no trend
Appendix D-2: Results of normality tests and trend analyses
J-12 WW
Confidence level = 95%
Start date = 4/25/1958
End date = 7/25/2006


                                      Normality tests                         Years            Mann-Kendall
                Total    Student. Andersen- Ryan-       Kolmogorov-  Total     with
Constituent    samples    Range    Darling    Joiner      Smirnov   samples   Data    S       Z      Prob(%)    Result
Conductivity     38       failed    failed     failed      failed     38       23     124   1.547      6.1      no trend
Ca               26      passed     failed     failed      failed     26       18     2     0.022     49.12     no trend
Mg               27       failed    failed     failed      failed     27       19     56    1.147     12.57     no trend
Na               29      passed     passed    passed      passed      29       21     -72   -1.333    9.14      no trend
K                28      passed     passed    passed      passed      28       21     -86   -1.68     4.65     decreasing
Cl               28      passed     failed     failed      failed     28       20     -38   -0.731    23.24     no trend
HCO3             30      passed     failed     failed      failed     30       22     -75   -1.321    9.33      no trend
SO4              29       failed    failed    passed       failed     29       22     -73   -1.351    8.84      no trend
SiO2             26      passed     passed    passed      passed      26       18     86    1.874     3.04     increasing
F                25      passed     passed    passed      passed      25       20     -98   -2.268    1.17     decreasing
                                                                      Linear Regression
   Sen's nonparametric estimator of slope        Least squares fit     York fit
                        Upper                                      Slope                  Residual
 Slope    Lower Limit    Limit        Result       R2     P-value (mg/L/yr) ±95%          normality    Result
4.65E-04    0.00E+00    1.08E-03     no trend     0.265     0.000    0.42     0.210        failed     increasing
0.00E+00    -3.49E-05   5.30E-05     no trend     0.002     0.845    0.003    0.026        failed      no trend
1.07E-05    -6.16E-06   3.24E-05     no trend     0.022     0.464    0.011    0.013        failed      no trend
-1.14E-04   -2.57E-04   0.00E+00     no trend     0.128     0.056    -0.052   0.054       passed       no trend
-2.03E-05   -4.69E-05   0.00E+00     no trend     0.081     0.142    -0.007   0.012        failed      no trend
-3.27E-05   -1.15E-04   3.94E-05     no trend     0.049     0.259    -0.017   0.040        failed      no trend
-2.13E-04   -7.36E-04   0.00E+00     no trend     0.048     0.242    -0.17    0.280        failed      no trend
-5.75E-05   -1.22E-04   0.00E+00     no trend     0.042     0.287    -0.012   0.032        failed      no trend
2.77E-04    2.54E-05    5.10E-04    increasing    0.231     0.013    0.42     0.270       passed      increasing
-1.56E-05   -2.51E-05   -7.97E-07   decreasing    0.195     0.027    -0.004   0.004       passed      decreasing
Appendix D-3: Results of normality tests and trend analyses
J-13 WW
Confidence level = 95%
Start date = 1/1/1963
End date = 10/19/2005


                                        Normality tests                           Years           Mann-Kendall
Constituen  Total        Student.   Andersen-    Ryan-    Kolmogorov-    Total     with
t          samples        Range      Darling    Joiner      Smirnov     samples   Data    S       Z      Prob(%)
Conductivity   33        passed       failed     failed      failed       28       14     50    0.968     16.64
Ca             23         failed     passed     passed      passed        16       13     -62   -2.752     0.3
Mg             23         failed      failed     failed      failed       16       13     -48   -2.118    1.71
Na             21        passed       failed    passed       failed       15       12     -18   -0.843    19.95
K              21        passed       failed    passed      passed        16       13     -52   -2.296    1.08
Cl             22         failed     passed     passed       failed       15       12     17    0.794     21.37
HCO3           23         failed      failed     failed     passed        16       13     -45   -1.983    2.37
SO4            22         failed     passed     passed      passed        13       11     4     0.183     42.73
SiO2           21         failed     passed     passed      passed        16       13     -6    -0.226    41.07
F              22        passed       failed    passed      passed        15       12     -33   -1.586    5.64
                                                                                               Linear Regression
ann-Kendall                  Sen's nonparametric estimator of slope       Least squares fit         York fit
                                     Lower      Upper                                          Slope               Residual
               Result      Slope      Limit      Limit        Result       R2       P-value   (mg/L/yr)    ±95%    normality    Result
               no trend   6.46E-04 -4.74E-04 1.99E-03        no trend     0.066      0.149     0.370      0.510     failed      no trend
              decreasing -1.27E-04 -2.09E-04 -6.33E-05     decreasing     0.389      0.010     -0.036     0.027    passed      decreasing
              decreasing -2.06E-05 -3.22E-05 0.00E+00      inconclusive   0.382      0.011     -0.007     0.006     failed     decreasing
               no trend   -2.08E-04 -4.61E-04 2.42E-05       no trend     0.018      0.618     -0.050     0.130    passed       no trend
              decreasing -3.37E-05 -6.86E-05 -9.60E-06     decreasing     0.250      0.049     -0.014     0.014    passed      decreasing
               no trend   2.70E-05 -1.50E-05 1.21E-04        no trend     0.001      0.912     0.009      0.028    passed       no trend
              decreasing -5.66E-04 -1.21E-03 -9.92E-05     decreasing     0.180      0.090     -0.180     0.210     failed      no trend
               no trend   3.80E-06 -1.00E-04 7.78E-05        no trend     0.014      0.696     0.005      0.029    passed       no trend
               no trend   -2.37E-05 -5.15E-04 2.14E-04       no trend     0.060      0.345     0.039      0.097     failed      no trend
               no trend   -1.48E-05 -3.62E-05 0.00E+00       no trend     0.107      0.216     -0.003     0.008    passed       no trend
Appendix D-4: Results of normality tests and trend analyses
U-20 WW
Confidence level = 95%
Start date = 5/23/1987
End date = 11/5/1997


                                   Normality tests                           Years            Mann-Kendall
                Total  Student. Andersen- Ryan-         Kolmogorov- Total     with
Constituent    samples Range     Darling   Joiner         Smirnov  samples   Data    S       Z      Prob(%)       Result
Conductivity      6      passed   passed     passed       passed      6        4     4     0.574     28.31        no trend
Ca                6      passed   passed     passed       passed      6        4     7     1.127     12.98        no trend
Mg                6      passed   passed     passed       passed      6        4     1       0        50          no trend
Na                6      passed   passed     passed       passed      6        4     6     0.956     16.95        no trend
K                 6      passed   passed     passed       passed      6        4     -7    -1.127    12.98        no trend
Cl                6      passed    failed    passed       failed      6        4     -10   -1.721    4.26        decreasing
HCO3              6      passed    failed     failed      failed      6        4     -9    -1.503    6.64         no trend
SO4               6      passed   passed     passed       failed      6        4     -2    -0.191    42.42        no trend
SiO2              6      passed   passed     passed       passed      6        4     4     0.564     28.65        no trend
F                 2                 Insufficient data                 2        2             Insufficient data                Insuffic
                                                                       Linear Regression
    Sen's nonparametric estimator of slope         Least squares fit     York fit
                                                                     Slope                  Residual
 Slope      Lower Limit Upper Limit    Result        R2     P-value (mg/L/yr) ±95%          normality   Result
2.41E-03    -5.11E-03     5.88E-03     no trend     0.578     0.079    1.590     1.700      passed      no trend
3.68E-04    -6.28E-04     6.51E-04     no trend     0.481     0.126    0.123     0.200      passed      no trend
1.16E-05    -1.58E-04     1.13E-04     no trend     0.004     0.900    0.003     0.038      passed      no trend
6.02E-04    -7.90E-04     8.42E-04     no trend     0.740     0.028    0.240     0.340      passed      no trend
-5.88E-05   -4.44E-04     1.36E-05     no trend     0.411     0.170    0.123     0.200      passed      no trend
-1.57E-04   -5.11E-04    -1.14E-05    decreasing    0.479     0.128    -0.053    0.066      passed      no trend
-3.31E-03   -1.76E-02    -1.28E-04    decreasing    0.358     0.210    -1.200    2.200      passed      no trend
-5.24E-05   -1.93E-03     7.05E-04     no trend     0.089     0.566    -0.160    0.600      passed      no trend
1.83E-04    -1.89E-04     7.94E-04     no trend     0.166     0.423    0.050     0.280      passed      no trend
                Insufficient data                                       Insufficient data
Appendix D-5: Results of normality tests and trend analyses
UE-5c WW
Confidence level = 95%
Start date = 3/23/1971
End date = 1/28/2003


                                      Normality tests                         Years           Mann-Kendall
                Total    Student. Andersen- Ryan-       Kolmogorov-  Total     with
Constituent    samples    Range    Darling    Joiner      Smirnov   samples   Data    S      Z      Prob(%)    Result
Conductivity     12      passed     passed    passed      passed      12       10     27    1.787     3.7     increasing
Ca                9      passed     passed    passed      passed       9        9     2     0.104    45.85     no trend
Mg                9      passed      failed    failed      failed      9        9     -21   -2.12     1.7     decreasing
Na                8      passed     passed    passed      passed       8        8     12    1.361    8.68      no trend
K                 8      passed     passed    passed      passed       8        8     4     0.371    35.53     no trend
Cl                9      passed     passed    passed      passed       9        9     12    1.147    12.57     no trend
HCO3              9      passed     passed    passed      passed       9        9     4     0.313    37.72     no trend
SO4               7       failed    passed    passed      passed       7        7     14    1.975    2.41     increasing
SiO2              7      passed     passed    passed      passed       7        7     9     1.202    11.48     no trend
F                 8       failed    passed    passed      passed       8        8     5     0.495    31.04     no trend
                                                                      Linear Regression
   Sen's nonparametric estimator of slope        Least squares fit     York fit
                        Upper                                      Slope              Residual
 Slope    Lower Limit    Limit        Result       R2     P-value (mg/L/yr) ±95%      normality      Result
3.57E-03    3.20E-04    5.64E-03    increasing    0.709     0.001    1.54      0.54       passed   increasing
1.20E-05    -3.25E-04   1.34E-04     no trend     0.001     0.953    0.011    0.082       passed    no trend
-3.89E-05   -1.19E-04   -1.48E-05   decreasing    0.554     0.021    -0.024    0.02       passed   decreasing
8.43E-04    -3.64E-04   1.22E-03     no trend     0.424     0.080    0.28      0.33       failed    no trend
4.86E-05    -8.33E-05   1.51E-04     no trend     0.136     0.370    0.019    0.046       passed    no trend
1.74E-04    -2.18E-04   4.16E-04     no trend     0.079     0.465    0.05      0.14       passed    no trend
1.24E-03    -3.20E-03   3.77E-03     no trend     0.077     0.470     0.3      0.89       passed    no trend
3.18E-04    3.61E-06    6.02E-04    increasing    0.511     0.071    0.105    0.076       passed   increasing
1.09E-03    -1.51E-03   2.39E-03     no trend     0.596     0.025    0.61      0.53       passed   increasing
7.38E-06    -2.91E-05   3.63E-05     no trend     0.001     0.948    0.002    0.017       passed    no trend
Appendix D-6: Results of normality tests and trend analyses
UE-15d WW
Confidence level = 95%
Start date = 11/2/1966
End date = 8/1/1990


                                     Normality tests                        Years            Mann-Kendall
                Total    Student. Andersen- Ryan-      Kolmogorov- Total     with
Constituent    samples    Range    Darling   Joiner      Smirnov  samples   Data    S       Z      Prob(%)    Result
Conductivity     10      passed     failed    passed     passed      9        9     -17   -1.677    4.68     decreasing
Ca               11      passed    passed     passed     passed     10       10     13    1.078     14.06     no trend
Mg               11      passed     failed    failed     failed     10       10     7     0.539     29.5      no trend
Na               10       failed    failed    failed     failed      9        9     -23   -2.294    1.09     decreasing
K                10       failed   passed     passed     passed      9        9     11    1.048     14.73     no trend
Cl               11      passed     failed    failed     failed     10       10     3     0.179     42.9      no trend
HCO3             11       failed    failed    passed     passed     10       10     -28   -2.415    0.79     decreasing
SO4              10      passed    passed     passed     passed      9        9     -13   -1.251    10.55     no trend
SiO2             10      passed    passed     passed     passed      9        9     19    1.887     2.96     increasing
F                 7       failed   passed     passed     passed      7        7     -12   -1.671    4.74     decreasing
                                                                     Linear Regression
   Sen's nonparametric estimator of slope        Least squares fit     York fit
                        Upper                                      Slope                 Residual
 Slope    Lower Limit    Limit        Result       R2     P-value (mg/L/yr) ±95%         normality    Result
-7.93E-03   -1.83E-02   -1.03E-03   decreasing    0.593     0.003     -3.8     2.1       passed      decreasing
6.48E-04    -5.43E-04   1.14E-03     no trend     0.062     0.462    0.08     0.33       passed       no trend
8.17E-05    -2.27E-04   4.43E-04     no trend     0.003     0.882    0.01     0.17        failed      no trend
-2.66E-03   -4.97E-03   -3.98E-04   decreasing    0.558     0.013    -1.55    0.91       passed      decreasing
1.72E-04    -1.24E-04   5.67E-04     no trend     0.196     0.201    0.08     0.14       passed       no trend
8.17E-05    -9.53E-04   4.38E-04     no trend     0.003     0.864    0.01     0.23        failed      no trend
-7.44E-03   -1.05E-02   -3.11E-03   decreasing    0.505     0.014     -2.5     1.8       passed      decreasing
-8.95E-04   -1.76E-03   1.06E-04     no trend     0.331     0.082    -0.31    0.33       passed       no trend
4.83E-03    7.90E-04    7.93E-03    increasing    0.532     0.017    1.03     0.96       passed      increasing
-1.52E-04   -3.37E-04   -1.88E-05   decreasing    0.515     0.07     -0.054   0.062      passed       no trend
Appendix D-7: Results of normality tests and trend analyses
UE-16d WW
Confidence level = 95%
Start date = 1/1/1981
End date = 7/12/2005


                                   Normality tests                        Years            Mann-Kendall
                Total  Student. Andersen- Ryan-      Kolmogorov- Total     with
Constituent    samples Range     Darling   Joiner      Smirnov  samples   Data    S       Z      Prob(%)    Result
Conductivity     23      passed   passed    passed     passed     20       10     -39   -1.233    10.88     no trend
Ca               17      failed   passed    passed     passed     15       10     34    1.635      5.1      no trend
Mg               17      passed   passed    passed     passed     15       10     -4    -0.148    44.1      no trend
Na               15      passed    failed   failed     failed     14        9     -37   -1.971    2.44     decreasing
K                15      failed    failed   passed     passed     13        8     -19    -1.1     13.56     no trend
Cl               16      passed   passed    passed     passed     15       10     44    2.133     1.65     increasing
HCO3             15      passed   passed    passed     passed     12        9     -51   -3.437    0.03     decreasing
SO4              16      failed   passed    passed     passed     14        9     5     0.22      41.31     no trend
SiO2             15      failed    failed   failed     failed     14        9     -51   -2.745     0.3     decreasing
F                13      passed   passed    passed     passed     12        8     -33   -2.199    1.39     decreasing
                                                                      Linear Regression
   Sen's nonparametric estimator of slope        Least squares fit     York fit
                        Upper                                      Slope                  Residual
 Slope    Lower Limit    Limit        Result       R2     P-value (mg/L/yr) ±95%          normality    Result
-2.57E-03   -5.06E-03   1.54E-03     no trend     0.160     0.139    -1.500   1.900       passed       no trend
4.09E-04    0.00E+00    1.03E-03     no trend     0.122     0.170    0.120    0.180       passed       no trend
-5.01E-05   -2.18E-04   1.45E-04     no trend     0.023     0.577    -0.013   0.058       passed       no trend
-4.96E-04   -1.07E-03   -1.37E-04   decreasing    0.466     0.005    -0.200   0.150       passed      decreasing
-3.94E-05   -1.03E-04   1.76E-06     no trend     0.020     0.614    -0.005   0.020        failed      no trend
3.01E-04    9.80E-05    4.83E-04    increasing    0.336     0.019    0.113    0.080       passed      increasing
-3.44E-03   -7.54E-03   -2.41E-03   decreasing    0.466     0.010    -1.140   0.630        failed     decreasing
2.17E-05    -1.91E-04   2.69E-04     no trend     0.034     0.508    -0.039   0.096       passed       no trend
-2.71E-04   -3.98E-04   -2.03E-04   decreasing    0.368     0.013    -0.140   0.110        failed     decreasing
-1.12E-05   -1.70E-05   -5.87E-06   decreasing    0.701     0.000    -0.005   0.002       passed      decreasing
Appendix D-8: Results of normality tests and trend analyses
WW-2
Confidence level = 95%
Start date = 4/25/1962
End date = 1/30/1991


                                      Normality tests                         Years            Mann-Kendall
                Total    Student. Andersen- Ryan-       Kolmogorov-  Total     with
Constituent    samples    Range    Darling    Joiner      Smirnov   samples   Data    S       Z      Prob(%)    Result
Conductivity     11       failed    passed    passed      passed       9        8     23    2.294     1.09     increasing
Ca               11       failed    passed    passed      passed      11       10     31    2.335     0.98     increasing
Mg               11      passed     passed    passed      passed      11       10     34    2.569     0.51     increasing
Na               10      passed     passed    passed      passed      10        9     25    2.155     1.56     increasing
K                10      passed     passed    passed      passed      10        9     25    2.147     1.59     increasing
Cl               12      passed     passed    passed      passed      11       10     14    1.012     15.58    no trend
HCO3             12       failed    passed    passed      passed      11       10     38    2.889     0.19     increasing
SO4              10       failed    passed    passed      passed      11        8     23    2.306     1.06     increasing
SiO2              8       failed    failed     failed      failed     10        9     -10   -0.812    20.86    no trend
F                 6      passed     failed     failed      failed      5        5     -1      0        50      no trend
                                                                     Linear Regression
   Sen's nonparametric estimator of slope       Least squares fit     York fit
                         Upper                                    Slope                  Residual
 Slope    Lower Limit    Limit        Result      R2     P-value (mg/L/yr) ±95%          normality    Result
6.20E-03    4.08E-03    8.64E-03   increasing    0.777     0.000    2.400    1.100       failed      increasing
6.65E-04    5.50E-04    8.67E-04   increasing    0.578     0.007    0.260    0.140       failed      increasing
3.85E-04    2.00E-04    6.09E-04   increasing    0.584     0.006    0.170    0.120       passed      increasing
3.08E-04    8.83E-05    4.58E-04   increasing    0.582     0.010    0.101    0.046       passed      increasing
8.06E-05    1.83E-05    2.66E-04   increasing    0.287     0.110    0.035    0.047       passed      no trend
1.99E-04    -1.29E-04   3.27E-04    no trend     0.063     0.429    0.069    0.091       passed      no trend
3.90E-03    3.27E-03    4.43E-03   increasing    0.933     0.000    1.480    0.290       passed      increasing
3.79E-04    6.92E-05    5.35E-04   increasing    0.631     0.006    0.113    0.070       passed      increasing
-3.95E-04   -6.61E-03   6.12E-04    no trend     0.167     0.314    0.140    0.260       passed      no trend
0.00E+00    -3.15E-05   2.04E-05    no trend     0.003     0.916    0.001    0.006       failed      no trend
Appendix D-9: Results of normality tests and trend analyses
WW-3
Confidence level = 95%
Start date = 4/4/1957
End date = 4/16/1969


                                      Normality tests                                          Mann-Kendall
                                                                                Years
                Total    Student. Andersen-   Ryan-     Kolmogorov-    Total     with
Constituent    samples    Range    Darling    Joiner      Smirnov     samples   Data    S       Z      Prob(%)   Result
Conductivity      9      passed    passed     passed      passed         7        6     -4    -0.451    32.62    no trend
Ca                8       failed   passed     passed      passed         7        5     1       0        50      no trend
Mg                8      passed    passed     passed      passed         7        5     -7    -0.901    18.38    no trend
Na                8      passed    passed     passed      passed         7        5     -10   -1.367    8.58     no trend
K                 8      passed    passed     passed      passed         7        5     5     0.615     26.94    no trend
Cl                8      passed    passed     passed      passed         7        5     -4    -0.456    32.43    no trend
HCO3              8      passed    passed     passed      passed         7        5     4     0.451     32.62    no trend
SO4               8      passed    passed     passed      passed         7        5     -3     -0.3     38.2     no trend
SiO2              7      passed    passed     passed      passed         7        5     -2    -0.152    43.96    no trend
F                 8      passed     failed     failed      failed        7        5     6     0.778     21.84    no trend
                                                                    Linear Regression
   Sen's nonparametric estimator of slope       Least squares fit       York fit

                           Upper                                  Slope                 Residual
 Slope      Lower Limit    Limit     Result       R2     P-value (mg/L/yr)    ±95%      normality    Result
-1.93E-03   -3.74E-02     7.89E-03   no trend    0.006     0.850    -0.200     3.700    passed      no trend
0.00E+00    -2.79E-03     8.92E-04   no trend    0.039     0.641    -0.060     0.290    passed      no trend
-4.43E-04   -1.31E-03     0.00E+00   no trend    0.018     0.749    -0.040     0.250    passed      no trend
-7.32E-04   -4.27E-03     0.00E+00   no trend    0.002     0.915    0.015      0.280    passed      no trend
0.00E+00    -9.22E-05     2.22E-04   no trend    0.738     0.006    0.085      0.072     failed     increasing
-7.87E-04   -2.17E-03     2.97E-04   no trend    0.300     0.160    -0.150     0.190    passed      no trend
8.19E-04    -3.18E-03     4.01E-03   no trend    0.208     0.256    0.330      0.880    passed      no trend
0.00E+00    -3.88E-03     5.95E-04   no trend    0.408     0.088    -0.240     0.250    passed      no trend
-8.87E-04   -4.51E-03     4.10E-03   no trend    0.388     0.135    -0.720     0.990    passed      no trend
0.00E+00    0.00E+00      6.03E-05   no trend    0.095     0.459    0.004      0.014     failed     no trend
Appendix D-10: Results of normality tests and trend analyses
WW-4
Confidence level = 95%
Start date = 12/1/1981
End date = 7/25/2006


                                   Normality tests                         Years            Mann-Kendall
                Total  Student. Andersen- Ryan-       Kolmogorov- Total     with
Constituent    samples Range     Darling   Joiner       Smirnov  samples   Data    S       Z      Prob(%)    Result
Conductivity     18      passed   passed    passed      passed     17        9     -32   -1.277    10.08     no trend
Ca               16      passed   passed    passed      passed     15       11     36    1.734     4.14     increasing
Mg               17      passed   passed    passed      passed     16       12     20    0.857     19.57     no trend
Na               15      passed   passed    passed      passed     14       10     -46   -2.467    0.68     decreasing
K                15      passed    failed    failed     failed     14       10     2     0.055     47.81     no trend
Cl               17      passed   passed    passed      passed     16       12     42    1.846     3.25     increasing
HCO3             16      passed    failed    failed     failed     15       11     -26   -1.239    10.77     no trend
SO4              17      failed   passed    passed      passed     16       12     13    0.541     29.43     no trend
SiO2             14      passed   passed    passed      passed     14       10     -30   -1.588    5.62      no trend
F                16      passed   passed    passed      passed     15       11     -40   -1.93     2.68     decreasing
                                                                      Linear Regression
   Sen's nonparametric estimator of slope        Least squares fit     York fit
                        Upper                                      Slope              Residual
 Slope    Lower Limit    Limit        Result       R2     P-value (mg/L/yr) ±95%      normality      Result
-8.60E-04   -2.48E-03   3.84E-04     no trend     0.008     0.729    -0.060   0.610   passed        no trend
1.61E-04    0.00E+00    3.20E-04     no trend     0.023     0.574    0.021    0.083   passed        no trend
6.67E-05    -8.39E-05   1.57E-04     no trend     0.124     0.167    0.035    0.057   passed        no trend
-3.97E-04   -1.03E-03   -1.89E-04   decreasing    0.018     0.630    -0.050   0.260       failed    no trend
0.00E+00    -4.71E-05   3.14E-06     no trend     0.011     0.706    -0.009   0.022       failed    no trend
2.97E-04    0.00E+00    5.77E-04     no trend     0.209     0.065    0.096    0.088   passed       increasing?
-1.13E-03   -4.17E-03   0.00E+00     no trend     0.144     0.147    -0.690   0.740   passed        no trend
1.32E-04    -1.39E-04   2.18E-04     no trend     0.051     0.385    0.044    0.095   passed        no trend
-5.20E-04   -1.26E-03   -2.16E-05   decreasing    0.176     0.135    -0.210   0.270   passed        no trend
-2.53E-05   -3.99E-05   -9.86E-06   decreasing    0.332     0.019    -0.010   0.006       failed   decreasing?
Appendix D-11: Results of normality tests and trend analyses
WW-4A
Confidence level = 95%
Start date = 8/8/2000
End date = 7/25/2006


                                    Normality tests                         Years           Mann-Kendall
                Total  Student. Andersen- Ryan-       Kolmogorov-  Total     with
Constituent    samples Range     Darling    Joiner      Smirnov   samples   Data    S       Z      Prob(%)   Result
Conductivity     11      passed   passed     passed     passed      11        4     12    0.856     19.59    no trend
Ca                8      passed   passed     passed     passed       8        5     9     0.997     15.93    no trend
Mg                8      passed   passed     passed     passed       8        5     -6    -0.619    26.81    no trend
Na                8      passed   passed     passed     passed       8        5     2     0.124     45.08    no trend
K                 8      passed   passed     passed     passed       8        5     -6    -0.619    26.81    no trend
Cl               10      failed   passed     passed     passed      10        5     10    0.808     20.95    no trend
HCO3              9      passed    failed    passed      failed      9        6     5     0.419     33.75    no trend
SO4               9      passed   passed     passed     passed       9        6     -13   -1.258    10.42    no trend
SiO2              8      passed   passed     passed     passed       8        5     0       0        50      no trend
F                 8      passed   passed     passed     passed       8        5     -4    -0.371    35.53    no trend
                                                                   Linear Regression
  Sen's nonparametric estimator of slope       Least squares fit     York fit
                        Upper                                    Slope                 Residual
 Slope    Lower Limit    Limit       Result      R2     P-value (mg/L/yr) ±95%         normality   Result
3.70E-03    -4.43E-03   1.14E-02    no trend    0.038     0.589    0.800    3.300      passed      no trend
6.34E-04    -4.24E-04   2.22E-03    no trend    0.090     0.469    0.190    0.570      passed      no trend
-9.34E-05   -6.31E-04   1.51E-04    no trend    0.002     0.921    -0.008   0.180      passed      no trend
5.88E-04    -2.61E-03   7.37E-03    no trend    0.066     0.538    0.600    1.700      passed      no trend
-1.73E-04   -9.77E-04   4.48E-04    no trend    0.095     0.458    -0.099   0.260      passed      no trend
1.68E-03    -5.99E-04   7.05E-03    no trend    0.007     0.845    -0.230   0.650      passed      no trend
5.55E-03    -1.53E-02   2.78E-02    no trend    0.017     0.740    -1.800   6.900      passed      no trend
-1.12E-03   -3.44E-03   4.47E-04    no trend    0.212     0.213    -0.410   0.650       failed     no trend
0.00E+00    -4.48E-03   2.86E-03    no trend    0.147     0.349    -0.600   1.700      passed      no trend
-4.62E-05   -2.50E-04   2.86E-04    no trend    0.304     0.157    -0.037   0.069      passed      no trend
Appendix D-12: Results of normality tests and trend analyses
WW-5A
Confidence level = 95%
Start date = 4/4/1957
End date = 6/4/1964


                                    Normality tests                         Years          Mann-Kendall
                Total  Student. Andersen- Ryan-       Kolmogorov-  Total     with
Constituent    samples Range     Darling    Joiner      Smirnov   samples   Data    S       Z      Prob(%)   Result
Conductivity      9      passed   passed    passed       failed      8        6     -1      0        50      no trend
Ca                9      passed   passed    passed      passed       7        5     0       0        50      no trend
Mg               10      passed   passed    passed      passed       8        6     4     0.374     35.42    no trend
Na               10      passed   passed    passed      passed       8        6     4     0.371     35.53    no trend
K                 8      passed   passed    passed      passed       6        5     -1      0        50      no trend
Cl               10      passed   passed    passed      passed       8        6     4     0.377     35.31    no trend
HCO3             10      passed   passed    passed      passed       8        6     4     0.371     35.53    no trend
SO4               8      passed   passed    passed      passed       6        5     3     0.39      34.84    no trend
SiO2              9      passed   passed    passed      passed       8        6     -11   -1.237    10.8     no trend
F                 9      passed   passed    passed      passed       7        5     8     1.063     14.38    no trend
                                                                   Linear Regression
  Sen's nonparametric estimator of slope       Least squares fit     York fit
                        Upper                                    Slope                 Residual
 Slope    Lower Limit    Limit       Result      R2     P-value (mg/L/yr) ±95%         normality   Result
-2.99E-03   -1.82E-02   7.38E-03    no trend    0.081     0.494    -2.100   4.800      passed      no trend
0.00E+00    -9.14E-04   3.65E-04    no trend    0.001     0.952    -0.008   0.094      passed      no trend
6.68E-05    -1.08E-04   4.31E-04    no trend    0.035     0.658    0.046    0.072      passed      no trend
4.43E-04    -3.57E-03   3.80E-03    no trend    0.089     0.473    0.390    1.200      passed      no trend
-8.96E-05   -6.42E-04   3.78E-04    no trend    0.001     0.952    -0.008   0.094      passed      no trend
2.73E-04    -2.25E-03   1.43E-03    no trend    0.172     0.307    0.350    0.620      passed      no trend
2.23E-03    -1.64E-02   1.93E-02    no trend    0.200     0.266    1.600    2.600      passed      no trend
7.64E-04    -1.85E-03   1.44E-03    no trend    0.053     0.662    0.220    0.950      passed      no trend
-5.43E-03   -1.28E-02   8.40E-04    no trend    0.446     0.070    -2.700   3.300      passed      no trend
1.70E-04    -1.08E-04   2.56E-04    no trend    0.317     0.188    0.058    0.084      passed      no trend
Appendix D-13: Results of normality tests and trend analyses
WW-5B
Confidence level = 95%
Start date = 4/4/1957
End date = 7/25/2006


                                    Normality tests                         Years             Mann-Kendall
                Total  Student. Andersen- Ryan-       Kolmogorov-  Total     with
Constituent    samples Range     Darling    Joiner      Smirnov   samples   Data     S       Z      Prob(%)    Result
Conductivity     37      passed   passed    passed      passed      37       19     95     1.23      10.94     no trend
Ca               28      passed   passed    passed      passed      28       20      1       0        50       no trend
Mg               28      passed    failed    failed      failed     28       20     106    2.076      1.9     increasing
Na               27      failed   passed    passed      passed      27       19     -175   -3.629    0.01     decreasing
K                25      failed    failed    failed      failed     25       18     61     1.402     8.04      no trend
Cl               28      passed   passed    passed      passed      28       20     -49    -0.949    17.14     no trend
HCO3             29      failed   passed    passed      passed      29       21     -16    -0.281    38.92     no trend
SO4              26      passed   passed    passed      passed      26       19     -25    -0.53     29.82     no trend
SiO2             24      passed    failed    failed      failed     24       17     36     0.868     19.27     no trend
F                28      passed   passed    passed      passed      28       20     -107   -2.096    1.81     decreasing
                                                                      Linear Regression
   Sen's nonparametric estimator of slope        Least squares fit     York fit
                        Upper                                      Slope              Residual
 Slope    Lower Limit    Limit        Result       R2     P-value (mg/L/yr) ±95%      normality      Result
4.04E-04    -1.15E-04   1.02E-03     no trend     0.084     0.082    0.190    0.210       passed    no trend
0.00E+00    -3.54E-05   4.23E-05     no trend     0.018     0.494    0.014    0.018       passed    no trend
2.28E-05    0.00E+00    4.68E-05     no trend     0.126     0.064    0.019    0.011       failed   increasing?
-4.71E-04   -6.94E-04   -2.20E-04   decreasing    0.362     0.001    -0.132   0.074       passed   decreasing
1.71E-05    0.00E+00    7.13E-05     no trend     0.147     0.058    0.027    0.027       failed    no trend
-5.08E-05   -1.58E-04   3.97E-05     no trend     0.014     0.551    -0.008   0.043       passed    no trend
-6.19E-05   -6.62E-04   6.36E-04     no trend     0.011     0.593    -0.110   0.240       passed    no trend
-3.19E-05   -1.89E-04   9.99E-05     no trend     0.002     0.823    -0.001   0.052       passed    no trend
3.76E-04    -6.78E-04   1.36E-03     no trend     0.027     0.444    0.710    0.430       failed    no trend
-3.75E-06   -8.60E-06   0.00E+00     no trend     0.094     0.113    -0.002   0.002       passed    no trend
Appendix D-14: Results of normality tests and trend analyses
WW-5C
Confidence level = 95%
Start date = 4/1/1957
End date = 7/25/2006


                                    Normality tests                         Years           Mann-Kendall
                Total  Student. Andersen- Ryan-       Kolmogorov-  Total     with
Constituent    samples Range     Darling    Joiner      Smirnov   samples   Data    S       Z      Prob(%)    Result
Conductivity     43      failed    failed    failed      failed     43       23     317   3.307     0.05     increasing
Ca               26      passed    failed    failed      failed     26       18     -21   -0.441    32.96    no trend
Mg               27      passed    failed    failed      failed     27       21     -28   -0.563    28.67    no trend
Na               29      passed   passed    passed       failed     29       21     123   2.289      1.1     increasing
K                28      passed   passed    passed      passed      28       21     51    0.989     16.14    no trend
Cl               32      passed    failed    failed      failed     32       23     97    1.557     5.97     no trend
HCO3             32      passed   passed    passed      passed      32       24     87    1.395     8.16     no trend
SO4              30      passed    failed   passed      passed      30       22     257   4.568       0      increasing
SiO2             23      passed   passed    passed      passed      23       17     -32   -0.819    20.64    no trend
F                30      passed   passed    passed      passed      30       22     232   4.123       0      increasing
                                                                    Linear Regression
   Sen's nonparametric estimator of slope       Least squares fit     York fit
                         Upper                                    Slope                 Residual
 Slope    Lower Limit    Limit        Result      R2     P-value (mg/L/yr) ±95%         normality    Result
2.88E-03    1.75E-03    3.64E-03   increasing    0.528     0.000    1.230    0.360      passed      increasing
0.00E+00    -1.92E-05   2.55E-06    no trend     0.095     0.126    -0.001   0.007       failed     no trend
0.00E+00    -2.21E-05   5.35E-06    no trend     0.036     0.341    0.001    0.007      passed      no trend
2.36E-04    5.98E-05    4.60E-04   increasing    0.142     0.044    0.081    0.069      passed      increasing
2.09E-05    -1.39E-05   4.05E-05    no trend     0.042     0.298    0.008    0.013       failed     no trend
6.15E-05    0.00E+00    1.22E-04    no trend     0.031     0.332    0.025    0.033       failed     no trend
1.23E-03    -3.06E-04   2.36E-03    no trend     0.085     0.106    0.360    0.530      passed      no trend
3.02E-04    2.47E-04    3.74E-04   increasing    0.688     0.000    0.119    0.030      passed      increasing
-1.11E-04   -3.66E-04   1.38E-04    no trend     0.011     0.629    -0.020   0.092      passed      no trend
1.54E-05    1.06E-05    2.28E-05   increasing    0.522     0.000    0.007    0.002      passed      increasing
Appendix D-15: Results of normality tests and trend analyses
WW-8
Confidence level = 95%
Start date = 1/11/1963
End date = 7/25/2006


                                    Normality tests                                      Mann-Kendall
                                                                          Years
                Total  Student. Andersen-   Ryan-     Kolmogorov-  Total   with
Constituent    samples Range     Darling    Joiner      Smirnov   samples Data    S       Z      Prob(%)   Result
Conductivity     29      failed   passed    passed      passed      29     15     50    0.919     17.9     no trend
Ca               27      passed   failed     failed      failed     27     17     20    0.396     34.6     no trend
Mg               26      failed   failed     failed      failed     26     16     69    1.499     6.69     no trend
Na               23      failed   passed    passed      passed      23     15     -59   -1.532    6.27     no trend
K                24      failed   passed     failed     passed      24     15     -33   -0.794    21.36    no trend
Cl               26      passed   passed    passed      passed      26     16     30    0.639     26.13    no trend
HCO3             26      passed   failed     failed      failed     26     17     -55   -1.191    11.69    no trend
SO4              25      passed   failed     failed      failed     25     15     -46   -1.052    14.65    no trend
SiO2             23      passed   passed    passed       failed     23     14     -3    -0.053    47.89    no trend
F                20      passed   passed    passed       failed     20     15     -42   -1.332    9.15     no trend
                                                                    Linear Regression
   Sen's nonparametric estimator of slope       Least squares fit      York fit

                           Upper                                  Slope                 Residual
 Slope      Lower Limit    Limit     Result       R2     P-value (mg/L/yr)   ±95%       normality   Result
3.84E-04    -3.60E-04     1.00E-03   no trend    0.019     0.480    0.110    0.250      passed      no trend
1.98E-06    -2.17E-05     3.82E-05   no trend    0.015     0.544    0.008    0.018       failed     no trend
1.37E-05    0.00E+00      2.48E-05   no trend    0.088     0.141    0.002    0.009       failed     no trend
-9.56E-05   -2.16E-04     0.00E+00   no trend    0.155     0.063    -0.040   0.044      passed      no trend
-1.06E-05   -3.40E-05     1.30E-05   no trend    0.037     0.370    -0.007   0.019      passed      no trend
4.15E-05    -7.51E-05     1.88E-04   no trend    0.026     0.429    0.004    0.051      passed      no trend
-2.19E-04   -9.80E-04     9.64E-05   no trend    0.110     0.098    -0.270   0.270      passed      no trend
-1.89E-05   -8.53E-05     0.00E+00   no trend    0.047     0.297    -0.010   0.025       failed     no trend
0.00E+00    -2.26E-04     2.74E-04   no trend    0.067     0.213    -0.010   0.230      passed      no trend
-6.95E-06   -1.67E-05     0.00E+00   no trend    0.160     0.080    -0.003   0.003      passed      no trend
Appendix D-16: Results of normality tests and trend analyses
WW-A
Confidence level = 95%
Start date = 9/21/1960
End date = 2/16/1988


                                    Normality tests                         Years           Mann-Kendall
                Total  Student. Andersen- Ryan-       Kolmogorov-  Total     with
Constituent    samples Range     Darling    Joiner      Smirnov   samples   Data    S       Z      Prob(%)   Result
Conductivity     17      passed    failed    failed     passed      12       11     14    0.894     18.58    no trend
Ca               19      failed    failed    failed      failed     14       13     -2    -0.055    47.81    no trend
Mg               19      passed    failed    failed      failed     14       13     10    0.494     31.06    no trend
Na               19      passed   passed    passed       failed     14       13     -19   -0.988    16.15    no trend
K                19      passed   passed    passed      passed      14       13     -20   -1.043    14.84    no trend
Cl               20      failed    failed    failed      failed     15       14     7     0.297     38.33    no trend
HCO3             20      passed    failed    failed      failed     15       14     15    0.693     24.42    no trend
SO4              18      failed   passed    passed       failed     13       12     2     0.061     47.56    no trend
SiO2             16      failed    failed    failed      failed     12       11     -1      0        50      no trend
F                17      passed   passed    passed      passed      14       13     30    1.592     5.57     no trend
                                                                   Linear Regression
  Sen's nonparametric estimator of slope       Least squares fit     York fit
                        Upper                                    Slope                 Residual
 Slope    Lower Limit    Limit       Result      R2     P-value (mg/L/yr) ±95%         normality   Result
9.95E-04    -2.93E-04   2.35E-03    no trend    0.003     0.856    0.000    1.300      passed      no trend
0.00E+00    -2.17E-04   4.77E-05    no trend    0.017     0.670    0.009    0.033       failed     no trend
0.00E+00    -4.73E-05   1.11E-04    no trend    0.001     0.932    0.001    0.028       failed     no trend
-1.06E-04   -3.30E-04   0.00E+00    no trend    0.049     0.446    -0.038   0.074       failed     no trend
-6.71E-05   -2.18E-04   4.14E-05    no trend    0.134     0.198    -0.033   0.046      passed      no trend
5.04E-05    -1.72E-04   4.71E-04    no trend    0.001     0.906    0.002    0.075       failed     no trend
1.19E-04    -3.81E-04   7.29E-04    no trend    0.003     0.835    0.020    0.280       failed     no trend
0.00E+00    -2.86E-04   3.22E-04    no trend    0.000     0.988    0.010    0.130      passed      no trend
-1.94E-04   -1.40E-03   1.44E-03    no trend    0.007     0.797    -0.120   0.650       failed     no trend
1.43E-05    0.00E+00    2.65E-05    no trend    0.169     0.144    0.005    0.006      passed      no trend
Appendix D-17: Results of normality tests and trend analyses
WW-C
Confidence level = 95%
Start date = 4/25/1962
End date = 5/19/1993


                                    Normality tests                         Years          Mann-Kendall
                Total  Student. Andersen- Ryan-       Kolmogorov-  Total     with
Constituent    samples Range     Darling    Joiner      Smirnov   samples   Data    S      Z      Prob(%)    Result
Conductivity     19      passed   passed    passed      passed      16       12     47   2.071     1.92     increasing
Ca               17      failed   passed     failed     passed      17       13     23   0.906     18.24    no trend
Mg               19      passed   passed    passed      passed      19       15     37   1.26      10.38    no trend
Na               17      passed   passed    passed      passed      17       13     -1     0        50      no trend
K                17      passed   passed    passed      passed      17       13     -5   -0.165    43.45    no trend
Cl               19      passed    failed    failed      failed     19       15     4    0.105     45.81    no trend
HCO3             17      passed   passed    passed      passed      17       13     24   0.947     17.17    no trend
SO4              17      failed   passed     failed     passed      17       13     18   0.701     24.17    no trend
SiO2             15      passed   passed    passed       failed     15       11     -4   -0.149    44.09    no trend
F                13      failed    failed    failed      failed     13       12     19    1.1      13.56    no trend
                                                                     Linear Regression
   Sen's nonparametric estimator of slope       Least squares fit     York fit
                         Upper                                    Slope              Residual
 Slope    Lower Limit    Limit        Result      R2     P-value (mg/L/yr) ±95%      normality      Result
5.00E-03    1.26E-03    7.83E-03   increasing    0.179     0.063    1.800    1.900   passed        no trend
3.20E-04   -1.57E-04    7.52E-04    no trend     0.019     0.582    0.080    0.190   passed        no trend
1.07E-04   0.00E+00     2.15E-04    no trend     0.190     0.055    0.053    0.051   passed       inconclusive
0.00E+00   -3.99E-04    5.04E-04    no trend     0.000     0.973    0.002    0.140   passed        no trend
0.00E+00   -1.43E-04    1.02E-04    no trend     0.002     0.861    0.005    0.050   passed        no trend
0.00E+00   -1.28E-04    1.62E-04    no trend     0.026     0.493    -0.012   0.081       failed    no trend
6.92E-04   -6.64E-04    1.47E-03    no trend     0.022     0.561    0.130    0.710       failed    no trend
1.23E-04   -1.27E-04    3.49E-04    no trend     0.128     0.158    0.100    0.130   passed        no trend
0.00E+00   -4.02E-04    1.61E-04    no trend     0.021     0.605    0.030    0.100       failed    no trend
7.57E-06   -7.45E-06    2.40E-05    no trend     0.008     0.763    0.003    0.007       failed    no trend
Appendix D-18: Results of normality tests and trend analyses
WW-C-1
Confidence level = 95%
Start date = 6/14/1964
End date = 7/12/2005


                                    Normality tests                                        Mann-Kendall
                                                                          Years
                Total  Student. Andersen-   Ryan-     Kolmogorov-  Total   with
Constituent    samples Range     Darling    Joiner      Smirnov   samples Data    S       Z      Prob(%)    Result
Conductivity     33      failed   failed    failed       failed     33     19     248   3.828     0.01     increasing
Ca               23      passed   failed    failed       failed     23     17     47    1.215     11.21     no trend
Mg               26      failed   passed    passed      passed      26     18     -55   -1.19     11.7      no trend
Na               24      passed   failed    failed      passed      24     16     -67   -1.638    5.07      no trend
K                25      passed   failed    failed       failed     25     17     -49   -1.122    13.1      no trend
Cl               23      passed   failed    failed       failed     23     15     7     0.159     43.7      no trend
HCO3             27      passed   failed    failed       failed     27     19     -52   -1.064    14.38     no trend
SO4              26      failed   passed    passed      passed      26     18     -21   -0.441    32.96     no trend
SiO2             26      failed   passed    failed      passed      26     18     42    0.904     18.29     no trend
F                23      passed   failed    passed       failed     23     18     -82   -2.141    1.62     decreasing
                                                                       Linear Regression
   Sen's nonparametric estimator of slope         Least squares fit      York fit

                           Upper                                    Slope               Residual
 Slope      Lower Limit    Limit      Result        R2     P-value (mg/L/yr)   ±95%     normality     Result
5.90E-03     3.37E-03     9.97E-03   increasing    0.218     0.006    2.600     1.800      failed   increasing
1.09E-04    -6.71E-05     2.84E-04   no trend      0.003     0.816    0.000     0.110      failed    no trend
-7.19E-05   -1.78E-04     1.11E-05   no trend      0.127     0.080    -0.043    0.048   passed       no trend
-2.66E-04   -7.39E-04     0.00E+00   no trend      0.089     0.167    -0.110    0.150   passed       no trend
-2.10E-05   -9.50E-05     0.00E+00   no trend      0.010     0.640    -0.009    0.035      failed    no trend
0.00E+00    -9.92E-05     1.56E-04   no trend      0.084     0.191    0.028     0.050   passed       no trend
-5.84E-04   -2.23E-03     3.10E-04   no trend      0.075     0.177    -0.680    0.960      failed    no trend
0.00E+00    -1.97E-04     6.29E-05   no trend      0.047     0.300    -0.020    0.054   passed       no trend
7.38E-05    -8.47E-05     1.34E-04   no trend      0.032     0.390    0.027     0.060      failed    no trend
-9.03E-06   -1.65E-05     0.00E+00   no trend      0.229     0.024    -0.003    0.003   passed      decreasing

				
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