WA-855_11512_G_O_20200127_MANNKENDALL

Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:ug/L
Sampling Point ID:MW-1 MW-2 MW-3 RW-3 RW-4 MW-7 MW-14
Sampling Sampling
Event Date
1 6/16/2015 4410 7260 22200 849 1159 8.5 1096
2 12/15/2015 1610 9770 5319 79.4 2088 2.49 708
3 9/29/2016 3770 7936 19400 278.2 1189 371.3
4 6/7/2017 6960 9145 35500 663 1797 156
5 3/15/2018 3320 1686 13940 859 1950 6.37 1002
6 9/26/2018 2640 30100 2290 671
7 3/20/2019 1014 4850 2582 1.8 518.5
8 12/10/2019 3434 7350 201 411.6
9
10
11
12
13
14
15
16
17
18
19
20
Coefficient of Variation:0.58 0.50 0.67 0.64 0.46 0.67 0.52
Mann-Kendall Statistic (S):-9 -5 -6 4 8 -4 -10
Confidence Factor:88.1%76.5%72.6%75.8%80.1%83.3%86.2%
Concentration Trend:Stable Stable Stable No Trend No Trend Stable Stable
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
TOTAL BTEX CONCENTRATION (ug/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
27-Jan-20 11512
Ainsley's Service Center - Creswell Total BTEX
J.M. Edwards (NCDEQ)
1
10
100
1000
10000
100000
12/14 07/15 01/16 08/16 03/17 09/17 04/18 10/18 05/19 12/19 06/20Concentration (ug/L)Sampling Date
MW-1
MW-2
MW-3
RW-3
RW-4
MW-7
MW-14
Core - Total BTEX 4yr
Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:ug/L
Sampling Point ID:MW-16 MW-22 MW-23 MW-26 MW-27 MW-28 MW-30
Sampling Sampling
Event Date
1
2
3
4 7/10/2012 988 118.2
5 4/24/2013 221 34.2 3 3 3
6 12/10/2013 4.2 38.6 32 5.7 3 3
7 10/1/2014 2.7 22.8 180 3 6.9 3
8 6/17/2015 481.5 3 57 3
9 12/15/2015 560 139
10 9/29/2016 71 158
11 6/7/2017 21 227
12 3/15/2018 16 30
13 3/20/2019 3.6 17
14 12/10/2019 8 34 20
15
16
17
18
19
20
Coefficient of Variation:1.75 0.82 1.42 0.37 1.01 0.99
Mann-Kendall Statistic (S):-8 -4 -6 -1 12 9
Confidence Factor:95.8%83.3%69.4%50.0%91.1%93.2%
Concentration Trend:Decreasing Stable No Trend Stable Prob. Increasing Prob. Increasing
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
TOTAL BTEX CONCENTRATION (ug/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
27-Jan-20 11512
Ainsley's Service Center - Creswell Total BTEX
J.M. Edwards (NCDEQ)
1
10
100
1000
11/10 04/12 08/13 12/14 05/16 09/17 02/19 06/20Concentration (ug/L)Sampling Date
MW-16
MW-22
MW-23
MW-26
MW-27
MW-28
MW-30
West - Total BTEX 6yr
Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:ug/L
Sampling Point ID:MW-1 MW-2 MW-3 RW-3 RW-4 MW-7 MW-14
Sampling Sampling
Event Date
1 6/16/2015 460 5900 4900 640 540 6 1000
2 12/15/2015 160 3100 4600 70 1100 0.93 630
3 9/29/2016 460 6900 4500 180 480 310
4 6/7/2017 660 7700 8200 450 910 120
5 3/15/2018 330 1300 5100 470 900 4 850
6 9/26/2018 320 8600 1300 570
7 3/20/2019 74 1800 1500 0.5 440
8 12/10/2019 3100 2800 100 330
9
10
11
12
13
14
15
16
17
18
19
20
Coefficient of Variation:0.56 0.54 0.46 0.64 0.54 0.91 0.55
Mann-Kendall Statistic (S):-8 -2 -4 2 4 -4 -10
Confidence Factor:84.5%57.0%64.0%59.2%64.0%83.3%86.2%
Concentration Trend:Stable Stable Stable No Trend No Trend Stable Stable
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
BENZENE (2L = 1 UG/L / GCL = 5000 UG/L) CONCENTRATION (ug/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
27-Jan-20 11512
Ainsley's Service Center - Creswell Benzene (2L = 1 ug/L / GCL = 5000 ug/L)
J.M. Edwards (NCDEQ)
0.1
1
10
100
1000
10000
12/14 07/15 01/16 08/16 03/17 09/17 04/18 10/18 05/19 12/19 06/20Concentration (ug/L)Sampling Date
MW-1
MW-2
MW-3
RW-3
RW-4
MW-7
MW-14
Core - Benzene 4yr
Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:ug/L
Sampling Point ID:MW-16 MW-22 MW-23 MW-26 MW-27 MW-28 MW-30
Sampling Sampling
Event Date
1
2
3
4 7/10/2012 820 86 0.5 0.5
5 4/24/2013 180 21 0.5 0.5 0.5
6 12/10/2013 1.4 26 30 3.2 0.5 0.5
7 10/1/2014 1.6 160 0.5 4.4 0.5
8 6/17/2015 460 0.5 43 0.5
9 12/15/2015 520 110
10 9/29/2016 49 140
11 6/7/2017 9.9 200
12 3/15/2018 4.6 17
13 3/20/2019 1.1 4.4
14 12/10/2019 1.8 26 4.5
15
16
17
18
19
20
Coefficient of Variation:1.55 1.08 1.61 1.16 1.09 1.12
Mann-Kendall Statistic (S):-6 -4 2 0 12 9
Confidence Factor:95.8%83.3%53.5%40.8%91.1%93.2%
Concentration Trend:Decreasing No Trend No Trend No Trend Prob. Increasing Prob. Increasing
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
BENZENE (1 UG/L) CONCENTRATION (ug/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
27-Jan-20 11512
Ainsley's Service Center - Creswell Benzene (1 ug/L)
J.M. Edwards (NCDEQ)
0.1
1
10
100
1000
11/10 04/12 08/13 12/14 05/16 09/17 02/19 06/20Concentration (ug/L)Sampling Date
MW-16
MW-22
MW-23
MW-26
MW-27
MW-28
MW-30
West - Benzene 6yr
Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:ug/L
Sampling Point ID:MW-1 MW-2 MW-3 RW-3 RW-4 MW-7 MW-14
Sampling Sampling
Event Date
1 6/16/2015 360 2200 830 0.92 1100
2 12/15/2015 700 100 52 160 2.3 840
3 9/29/2016 140 750 130 10 0.97 390
4 6/7/2017 250 3100 230 10 290
5 3/15/2018 27 690 410 10 1.2 200
6 9/26/2018 1700 53 120
7 3/20/2019 430 1 0.58 150
8 12/10/2019 27 510 10 98
9
10
11
12
13
14
15
16
17
18
19
20
Coefficient of Variation:1.02 0.88 0.94 1.57 0.55 0.93
Mann-Kendall Statistic (S):-10 -6 2 -7 -2 -26
Confidence Factor:95.2%72.6%59.2%80.9%59.2%100.0%
Concentration Trend:Decreasing Stable No Trend No Trend Stable Decreasing
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
MTBE (20 UG/L) CONCENTRATION (ug/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
27-Jan-20 11512
Ainsley's Service Center - Creswell MTBE (20 ug/L)
J.M. Edwards (NCDEQ)
0.1
1
10
100
1000
10000
12/14 07/15 01/16 08/16 03/17 09/17 04/18 10/18 05/19 12/19 06/20Concentration (ug/L)Sampling Date
MW-1
MW-2
MW-3
RW-3
RW-4
MW-7
MW-14
Core - MTBE 4yr
Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:ug/L
Sampling Point ID:MW-16 MW-22 MW-23 MW-26 MW-27 MW-28 MW-30
Sampling Sampling
Event Date
1
2
3
4 7/10/2012 160 320 520 89 100
5 4/24/2013 120 180 500 350 170 1.9 6.4
6 12/10/2013 80 680 35 170 180 100 43
7 10/1/2014 35 760 8.7 17 180 190 130
8 6/17/2015 1.6 210 4.8 10 210 96 76
9 12/15/2015 250 190
10 9/29/2016 310 130
11 6/7/2017 270 74
12 3/15/2018 270 10
13 3/20/2019 0.6 31
14 12/10/2019 0.49 270 5.3 18
15
16
17
18
19
20
Coefficient of Variation:0.99 0.63 1.44 1.10 0.29 0.83 0.90
Mann-Kendall Statistic (S):-15 2 -15 -6 35 -9 -1
Confidence Factor:99.9%59.2%99.9%88.3%100.0%79.2%50.0%
Concentration Trend:Decreasing No Trend Decreasing No Trend Increasing Stable Stable
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
MTBE (20 UG/L) CONCENTRATION (ug/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
27-Jan-20 11512
Ainsley's Service Center - Creswell MTBE (20 ug/L)
J.M. Edwards (NCDEQ)
0.1
1
10
100
1000
11/10 04/12 08/13 12/14 05/16 09/17 02/19 06/20Concentration (ug/L)Sampling Date
MW-16
MW-22
MW-23
MW-26
MW-27
MW-28
MW-30
West - MTBE 6yr
Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:ug/L
Sampling Point ID:MW-1 MW-2 MW-3 RW-3 RW-4 MW-7 MW-14
Sampling Sampling
Event Date
1 6/16/2015 300 560 580 19 170 0.61 72
2 12/15/2015 110 290 450 4.4 310 0.95 110
3 9/29/2016 340 460 740 20 340 1 78
4 6/7/2017 710 640 1300 11 360 1 120
5 3/15/2018 350 170 470 16 330 6.5 160
6 9/26/2018 270 750 350 140
7 3/20/2019 84 190 270 0.47 130
8 12/10/2019 290 310 39 300
9
10
11
12
13
14
15
16
17
18
19
20
Coefficient of Variation:0.67 0.45 0.57 0.46 0.41 1.33 0.52
Mann-Kendall Statistic (S):-3 -4 -6 0 -2 4 20
Confidence Factor:61.4%70.3%72.6%40.8%54.8%70.3%99.3%
Concentration Trend:Stable Stable Stable Stable Stable No Trend Increasing
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
NAPHTHALENE (6 UG/L) CONCENTRATION (ug/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
27-Jan-20 11512
Ainsley's Service Center - Creswell Naphthalene (6 ug/L)
J.M. Edwards (NCDEQ)
0.1
1
10
100
1000
10000
12/14 07/15 01/16 08/16 03/17 09/17 04/18 10/18 05/19 12/19 06/20Concentration (ug/L)Sampling Date
MW-1
MW-2
MW-3
RW-3
RW-4
MW-7
MW-14
Core - Naph 4yr
Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:ug/L
Sampling Point ID:MW-16 MW-22 MW-23 MW-26 MW-27 MW-28 MW-30
Sampling Sampling
Event Date
1
2
3
4 7/10/2012 180 9.9 1
5 4/24/2013 94 22 1 1 1
6 12/10/2013 4.2 27 1 1 1
7 10/1/2014 30 31 5.6 1 1
8 6/17/2015 1 3.8 15 0.68 1
9 12/15/2015 30 2.8
10 9/29/2016 35 3.1
11 6/7/2017 32 7.8
12 3/15/2018 26 14
13 3/20/2019 1 20
14 12/10/2019 2.1 11 34
15
16
17
18
19
20
Coefficient of Variation:1.40 0.61 0.97 1.06 1.46
Mann-Kendall Statistic (S):-12 2 22 25 9
Confidence Factor:98.2%59.2%97.1%99.6%93.2%
Concentration Trend:Decreasing No Trend Increasing Increasing Prob. Increasing
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
NAPHTHALENE (6 UG/L) CONCENTRATION (ug/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
27-Jan-20 11512
Ainsley's Service Center - Creswell Naphthalene (6 ug/L)
J.M. Edwards (NCDEQ)
0.1
1
10
100
1000
11/10 04/12 08/13 12/14 05/16 09/17 02/19 06/20Concentration (ug/L)Sampling Date
MW-16
MW-22
MW-23
MW-26
MW-27
MW-28
MW-30
West - Naph 6yr