1812_DukeMarshall_2024Q3GWCR_AppD_FID1906842_20241030

Well ID Analyte Number of Samples Non-Detects Detects Percent Non-Detects Is Trend Analysis Applicable? Two-Sided P Value S Value Trend Conclusion
CLF-401 Groundwater Elevation 50 0 50 0 Yes 7.79461343545378E-23 -1177 Statistically significant decreasing trend
CLF-402 Groundwater Elevation 50 0 50 0 Yes 6.57557405179255E-20 -1093 Statistically significant decreasing trend
CLF21-10 Groundwater Elevation 45 0 45 0 Yes 2.39193468587473E-07 -529 Statistically significant decreasing trend
CLF21-11 Groundwater Elevation 45 0 45 0 Yes 0.0313805527985096 -221 Statistically significant decreasing trend
CLF21-12 Groundwater Elevation 44 0 44 0 Yes 0.436004638671875 - Stable, no significant trend
CLF21-13/R Groundwater Elevation 42 0 42 0 Yes 2.62731864042465E-10 -584 Statistically significant decreasing trend
CLF21-14/R Groundwater Elevation 44 0 44 0 Yes 0.3166264295578 - Stable, no significant trend
CLF21-15 Groundwater Elevation 41 0 41 0 Yes 0.0225856807082891 -204 Statistically significant decreasing trend
CLF22-306 Groundwater Elevation 28 0 28 0 Yes 4.41918679427999E-09 -298 Statistically significant decreasing trend
CLF22-307 Groundwater Elevation 27 0 27 0 Yes 2.4601856694062E-06 -227 Statistically significant decreasing trend
CLF23-405 Groundwater Elevation 23 0 23 0 Yes 1.64448163419983E-10 -243 Statistically significant decreasing trend
CLF23-406 Groundwater Elevation 24 0 24 0 Yes 5.7391858626632E-11 -265 Statistically significant decreasing trend
CLF23-407 Groundwater Elevation 24 0 24 0 Yes 7.49558104473635E-09 -234 Statistically significant decreasing trend
CLF23-408 Groundwater Elevation 24 0 24 0 Yes 2.51679788121351E-11 -270 Statistically significant decreasing trend
CLF24-501 Groundwater Elevation 4 0 4 0 Yes 0.308179497718811 - Stable, no significant trend
CLF24-502 Groundwater Elevation 4 0 4 0 Yes 0.308179497718811 - Stable, no significant trend
CLF24-503 Groundwater Elevation 4 0 4 0 Yes 1 - Stable, no significant trend
CLF24-504 Groundwater Elevation 4 0 4 0 Yes 1 - Stable, no significant trend
CLF24-505 Groundwater Elevation 4 0 4 0 Yes 1 - Stable, no significant trend
GWA-04D Groundwater Elevation 42 0 42 0 Yes 1.73939795899969E-08 -521 Statistically significant decreasing trend
GWA-04S Groundwater Elevation 42 0 42 0 Yes 2.66875632704E-09 -550 Statistically significant decreasing trend
ILF-02D Groundwater Elevation 43 0 43 0 Yes 1.30599267511577E-10 -615 Statistically significant decreasing trend
ILF-02S Groundwater Elevation 43 0 43 0 Yes 4.41060715727914E-10 -597 Statistically significant decreasing trend
MW-04 Groundwater Elevation 41 0 41 0 Yes 2.81717302641482E-06 -418 Statistically significant decreasing trend
MW-04D Groundwater Elevation 43 0 43 0 Yes 3.47634205866143E-08 -528 Statistically significant decreasing trend
Notes: Prepared by: RSB Checked by: GTC
Detection limits were adjusted in accordance with U.S. Environmental Protection Agency guidelines.
NA - not analyzed
To be analyzed for trends there must be at least 4 detects and less than or equal to 50% non-detects.
A P value less than 0.1 indicates a statistically significant trend.
A negative S value indicates a decreasing trend.
A positive S values indicates an increasing trend.
Well ID Analyte Number of Samples Non-Detects Detects Percent Non-Detects Is Trend Analysis Applicable? Two-Sided P Value S Value Trend Conclusion
CLF-401 Groundwater Elevation 4 0 4 0 Yes 0.0894293710589409 -6 Statistically significant decreasing trend
CLF-402 Groundwater Elevation 4 0 4 0 Yes 0.308179497718811 - Stable, no significant trend
CLF21-10 Groundwater Elevation 4 0 4 0 Yes 0.734095215797424 - Stable, no significant trend
CLF21-11 Groundwater Elevation 4 0 4 0 Yes 1 - Stable, no significant trend
CLF21-12 Groundwater Elevation 4 0 4 0 Yes 1 - Stable, no significant trend
CLF21-13/R Groundwater Elevation 4 0 4 0 Yes 0.4701007604599 - Stable, no significant trend
CLF21-14/R Groundwater Elevation 4 0 4 0 Yes 1 - Stable, no significant trend
CLF21-15 Groundwater Elevation 4 0 4 0 Yes 0.308179497718811 - Stable, no significant trend
CLF22-306 Groundwater Elevation 4 0 4 0 Yes 0.308179497718811 - Stable, no significant trend
CLF22-307 Groundwater Elevation 4 0 4 0 Yes 0.734095215797424 - Stable, no significant trend
CLF23-405 Groundwater Elevation 4 0 4 0 Yes 0.308179497718811 - Stable, no significant trend
CLF23-406 Groundwater Elevation 4 0 4 0 Yes 0.734095215797424 - Stable, no significant trend
CLF23-407 Groundwater Elevation 4 0 4 0 Yes 0.0894293710589409 -6 Statistically significant decreasing trend
CLF23-408 Groundwater Elevation 4 0 4 0 Yes 0.734095215797424 - Stable, no significant trend
CLF24-501 Groundwater Elevation 4 0 4 0 Yes 0.308179497718811 - Stable, no significant trend
CLF24-502 Groundwater Elevation 4 0 4 0 Yes 0.308179497718811 - Stable, no significant trend
CLF24-503 Groundwater Elevation 4 0 4 0 Yes 1 - Stable, no significant trend
CLF24-504 Groundwater Elevation 4 0 4 0 Yes 1 - Stable, no significant trend
CLF24-505 Groundwater Elevation 4 0 4 0 Yes 1 - Stable, no significant trend
GWA-04D Groundwater Elevation 4 0 4 0 Yes 0.734095215797424 - Stable, no significant trend
GWA-04S Groundwater Elevation 4 0 4 0 Yes 0.308179497718811 - Stable, no significant trend
ILF-02D Groundwater Elevation 4 0 4 0 Yes 1 - Stable, no significant trend
ILF-02S Groundwater Elevation 4 0 4 0 Yes 0.734095215797424 - Stable, no significant trend
MW-04 Groundwater Elevation 4 0 4 0 Yes 0.308179497718811 - Stable, no significant trend
MW-04D Groundwater Elevation 4 0 4 0 Yes 0.0894293785095215 6 Statistically significant increasing trend
Notes: Prepared by: RSB Checked by: GTC

Detection limits were adjusted in accordance with U.S. Environmental Protection Agency guidelines.
NA - not analyzed
To be analyzed for trends there must be at least 4 detects and less than or equal to 50% non-detects.
A P value less than 0.1 indicates a statistically significant trend.
A negative S value indicates a decreasing trend.
A positive S values indicates an increasing trend.