Water quality - Fylde - Revision history

Ajhil: /* Post baseline monitoring */

2026-05-12T09:19:31Z

Post baseline monitoring

← Older revision		Revision as of 10:19, 12 May 2026
Line 94:		Line 94:
	[[Image:Figure_7d_Sulphate.jpg\|frameless\|center\|500px\|]]		[[Image:Figure_7d_Sulphate.jpg\|frameless\|center\|500px\|]]
	[[Image:Figure_7e_Iron.jpg\|frameless\|center\|500px\|]]		[[Image:Figure_7e_Iron.jpg\|frameless\|center\|500px\|]]
	~~[[Image:Figure_7f_Methane.jpg\|frameless\|center\|500px\|]]~~

	[[Category:Environmental_baseline_monitoring_in_the_Fylde,_Lancashire]]		[[Category:Environmental_baseline_monitoring_in_the_Fylde,_Lancashire]]

Ajhil: /* Post baseline monitoring */

2026-05-12T09:16:31Z

Post baseline monitoring

← Older revision		Revision as of 10:16, 12 May 2026
Line 89:		Line 89:
	Figures 4, 5, 6 and 7 indicate (grey wash) the initiation of hydraulic fracturing at PNR (October to December 2018 and August 2019) and the subsequent periods. Data from these post-baseline dates provides no evidence for any effect on water quality from the PNR exploration works. Although concentrations of solutes continued to vary over time, key parameters remained within the baseline range at individual sites.		Figures 4, 5, 6 and 7 indicate (grey wash) the initiation of hydraulic fracturing at PNR (October to December 2018 and August 2019) and the subsequent periods. Data from these post-baseline dates provides no evidence for any effect on water quality from the PNR exploration works. Although concentrations of solutes continued to vary over time, key parameters remained within the baseline range at individual sites.

			[[Image:Figure_7a_Calcium.jpg\|frameless\|center\|500px\|]]
	~~TSByTypestream_Ca_Fig7a~~		[[Image:Figure_7b_Sodium.jpg\|frameless\|center\|500px\|]]
	~~TSByTypestream_Na_Fig7b~~		[[Image:Figure_7c_Alkanility.jpg\|frameless\|center\|500px\|]]
	~~TSByTypestream_HCO3_Fig7c~~		[[Image:Figure_7d_Sulphate.jpg\|frameless\|center\|500px\|]]
	~~TSByTypestream_SO4_Fig7d~~		[[Image:Figure_7e_Iron.jpg\|frameless\|center\|500px\|]]
	~~TSByTypestream_Fe_Fig7e~~		[[Image:Figure_7f_Methane.jpg\|frameless\|center\|500px\|]]

	[[Category:Environmental_baseline_monitoring_in_the_Fylde,_Lancashire]]		[[Category:Environmental_baseline_monitoring_in_the_Fylde,_Lancashire]]

Ajhil: /* Groundwater */

2026-05-12T09:01:45Z

Groundwater

← Older revision		Revision as of 10:01, 12 May 2026
Line 68:		Line 68:
	[[Image:Figure_4e_Iron.jpg\|frameless\|center\|500px\|]]		[[Image:Figure_4e_Iron.jpg\|frameless\|center\|500px\|]]
	[[Image:Figure_4f_Methane.jpg\|frameless\|center\|500px\|]]		[[Image:Figure_4f_Methane.jpg\|frameless\|center\|500px\|]]
			<br>
	[[Image:Figure_5a_Calcium.jpg\|frameless\|center\|500px\|]]		[[Image:Figure_5a_Calcium.jpg\|frameless\|center\|500px\|]]
	[[Image:Figure_5b_Sodium.jpg\|frameless\|center\|500px\|]]		[[Image:Figure_5b_Sodium.jpg\|frameless\|center\|500px\|]]
Line 75:		Line 75:
	[[Image:Figure_5e_Iron.jpg\|frameless\|center\|500px\|]]		[[Image:Figure_5e_Iron.jpg\|frameless\|center\|500px\|]]
	[[Image:Figure_5f_Methane.jpg\|frameless\|center\|500px\|]]		[[Image:Figure_5f_Methane.jpg\|frameless\|center\|500px\|]]
			<br>
	[[Image:Figure_6a_Calcium.jpg\|frameless\|center\|500px\|]]		[[Image:Figure_6a_Calcium.jpg\|frameless\|center\|500px\|]]
	[[Image:Figure_6b_Sodium.jpg\|frameless\|center\|500px\|]]		[[Image:Figure_6b_Sodium.jpg\|frameless\|center\|500px\|]]

Ajhil: /* Groundwater */

2026-05-12T09:01:13Z

Groundwater

← Older revision		Revision as of 10:01, 12 May 2026
Line 69:		Line 69:
	[[Image:Figure_4f_Methane.jpg\|frameless\|center\|500px\|]]		[[Image:Figure_4f_Methane.jpg\|frameless\|center\|500px\|]]

	~~TSByType_SST_Ca_Fig5a~~		[[Image:Figure_5a_Calcium.jpg\|frameless\|center\|500px\|]]
	~~TSByType_SST_Na_Fig5b~~		[[Image:Figure_5b_Sodium.jpg\|frameless\|center\|500px\|]]
	~~TSByType_SST_HCO3_Fig5c~~		[[Image:Figure_5c_Alkanility.jpg\|frameless\|center\|500px\|]]
	~~TSByType_SST_SO4_Fig5d~~		[[Image:Figure_5d_Sulphate.jpg\|frameless\|center\|500px\|]]
	~~TSByType_SST_Fe_Fig5e~~		[[Image:Figure_5e_Iron.jpg\|frameless\|center\|500px\|]]
	~~TSByType_SST_CH4_Fig5f~~		[[Image:Figure_5f_Methane.jpg\|frameless\|center\|500px\|]]

	~~TSByTypeBGSBoreholes_Ca_Fig6a~~		[[Image:Figure_6a_Calcium.jpg\|frameless\|center\|500px\|]]
	~~TSByTypeBGSBoreholes_Na_Fig6b~~		[[Image:Figure_6b_Sodium.jpg\|frameless\|center\|500px\|]]
	~~TSByTypeBGSBoreholes_HCO3_Fig6c~~		[[Image:Figure_6c_Alkanility.jpg\|frameless\|center\|500px\|]]
	~~TSByTypeBGSBoreholes_SO4_Fig6d~~		[[Image:Figure_6d_Sulphate.jpg\|frameless\|center\|500px\|]]
	~~TSByTypeBGSBoreholes_Fe_Fig6e~~		[[Image:Figure_6e_Iron.jpg\|frameless\|center\|500px\|]]
	~~TSByTypeBGSBoreholes_CH4_Fig6f~~		[[Image:Figure_6f_Methane.jpg\|frameless\|center\|500px\|]]

	==Surface water==		==Surface water==

Ajhil: /* Groundwater */

2026-05-12T08:43:39Z

Groundwater

← Older revision		Revision as of 09:43, 12 May 2026
Line 62:		Line 62:
	Monitoring of groundwater in the two aquifers (figures 4, 5 and 6) has shown that the chemical characteristics have been broadly consistent over time. Concentrations of naturally occurring CH4 up to 4 mg/L were observed in groundwater from the superficial aquifer; concentrations in the Sherwood Sandstone Group groundwater are generally low (less than 0.7 mg/l).		Monitoring of groundwater in the two aquifers (figures 4, 5 and 6) has shown that the chemical characteristics have been broadly consistent over time. Concentrations of naturally occurring CH4 up to 4 mg/L were observed in groundwater from the superficial aquifer; concentrations in the Sherwood Sandstone Group groundwater are generally low (less than 0.7 mg/l).

	~~TSByType_Quaternary_Ca_Fig4a~~		[[Image:Figure_4a_Calcium.jpg\|frameless\|center\|500px\|]]
	~~TSByType_Quaternary_Na_Fig4b~~		[[Image:Figure_4b_Sodium.jpg\|frameless\|center\|500px\|]]
	~~TSByType_Quaternary_HCO3_Fig4c~~		[[Image:Figure_4c_Alkanility.jpg\|frameless\|center\|500px\|]]
	~~TSByType_Quaternary_SO4_Fig4d~~		[[Image:Figure_4d_Sulphate.jpg\|frameless\|center\|500px\|]]
	~~TSByType_Quaternary_Fe_Fig4e~~		[[Image:Figure_4e_Iron.jpg\|frameless\|center\|500px\|]]
	~~TSByType_Quaternary_CH4_Fig4f~~		[[Image:Figure_4f_Methane.jpg\|frameless\|center\|500px\|]]

	TSByType_SST_Ca_Fig5a		TSByType_SST_Ca_Fig5a

Ajhil: /* Groundwater */

2026-05-12T08:28:34Z

Groundwater

← Older revision		Revision as of 09:28, 12 May 2026
Line 51:		Line 51:

	[[Image:BoxPlot_Figure3a_b.jpg\|frameless\|center\|500px\|]]		[[Image:BoxPlot_Figure3a_b.jpg\|frameless\|center\|500px\|]]

			<center>'''Figures 3a and 3b'''    Box plots of the distributions of dissolved chemicals. ug/L equals thousandths of a milligram per litre. BGS © UKRI.</center>

	[[Image:BoxPlot_Figure 3c.jpg\|frameless\|center\|500px\|]]		[[Image:BoxPlot_Figure 3c.jpg\|frameless\|center\|500px\|]]

			<center>'''Figure 3c'''    Box plots of the distributions of dissolved chemicals. ug/L equals thousandths of a milligram per litre.</center>

	Analysis of organic chemicals suggests that the groundwater contains detectable quantities of some pesticides, perfluorinated compounds and other synthetic chemicals, but the concentrations are low and the numbers of chemicals detected are small. The presence of these substances does, however, indicate effects on the shallow groundwater as a result of human activity (Figure 3).		Analysis of organic chemicals suggests that the groundwater contains detectable quantities of some pesticides, perfluorinated compounds and other synthetic chemicals, but the concentrations are low and the numbers of chemicals detected are small. The presence of these substances does, however, indicate effects on the shallow groundwater as a result of human activity (Figure 3).

Ajhil: /* Groundwater */

2026-05-12T08:22:15Z

Groundwater

← Older revision		Revision as of 09:22, 12 May 2026
Line 50:		Line 50:
	Methane (CH<sub>4</sub>) is also often detected, though rarely at high concentrations. The composition of CH<sub>4</sub>, where present, suggests that it has been produced in the superficial sediments by microbial reaction of organic matter.		Methane (CH<sub>4</sub>) is also often detected, though rarely at high concentrations. The composition of CH<sub>4</sub>, where present, suggests that it has been produced in the superficial sediments by microbial reaction of organic matter.

	[[Image:~~environbaselinemonitoringvideo~~.jpg\|frameless\|center\|500px\|]]		[[Image:BoxPlot_Figure3a_b.jpg\|frameless\|center\|500px\|]]

			[[Image:BoxPlot_Figure 3c.jpg\|frameless\|center\|500px\|]]

	Analysis of organic chemicals suggests that the groundwater contains detectable quantities of some pesticides, perfluorinated compounds and other synthetic chemicals, but the concentrations are low and the numbers of chemicals detected are small. The presence of these substances does, however, indicate effects on the shallow groundwater as a result of human activity (Figure 3).		Analysis of organic chemicals suggests that the groundwater contains detectable quantities of some pesticides, perfluorinated compounds and other synthetic chemicals, but the concentrations are low and the numbers of chemicals detected are small. The presence of these substances does, however, indicate effects on the shallow groundwater as a result of human activity (Figure 3).

Ajhil: /* Groundwater */

2026-05-12T08:21:12Z

Groundwater

← Older revision		Revision as of 09:21, 12 May 2026
Line 50:		Line 50:
	Methane (CH<sub>4</sub>) is also often detected, though rarely at high concentrations. The composition of CH<sub>4</sub>, where present, suggests that it has been produced in the superficial sediments by microbial reaction of organic matter.		Methane (CH<sub>4</sub>) is also often detected, though rarely at high concentrations. The composition of CH<sub>4</sub>, where present, suggests that it has been produced in the superficial sediments by microbial reaction of organic matter.

	~~LancsBoxes~~		[[Image:environbaselinemonitoringvideo.jpg\|frameless\|center\|500px\|]]
	~~BoxOrgV~~

	Analysis of organic chemicals suggests that the groundwater contains detectable quantities of some pesticides, perfluorinated compounds and other synthetic chemicals, but the concentrations are low and the numbers of chemicals detected are small. The presence of these substances does, however, indicate effects on the shallow groundwater as a result of human activity (Figure 3).		Analysis of organic chemicals suggests that the groundwater contains detectable quantities of some pesticides, perfluorinated compounds and other synthetic chemicals, but the concentrations are low and the numbers of chemicals detected are small. The presence of these substances does, however, indicate effects on the shallow groundwater as a result of human activity (Figure 3).

Ajhil: /* Groundwater */

2026-05-12T08:10:29Z

Groundwater

← Older revision		Revision as of 09:10, 12 May 2026
Line 46:		Line 46:
	* concentrations of nitrate (NO<sub>3</sub><sup>–</sup>) are low		* concentrations of nitrate (NO<sub>3</sub><sup>–</sup>) are low
	* concentrations of iron (Fe) and manganese (Mn) are high		* concentrations of iron (Fe) and manganese (Mn) are high
	* concentrations of arsenic (As) and ammonium (NH<sub>4</sub>+) are high in some of the groundwater tested		* concentrations of arsenic (As) and ammonium (NH<sub>4</sub><sup>+</sup>) are high in some of the groundwater tested

	Methane (CH<sub>4</sub>) is also often detected, though rarely at high concentrations. The composition of CH<sub>4</sub>, where present, suggests that it has been produced in the superficial sediments by microbial reaction of organic matter.		Methane (CH<sub>4</sub>) is also often detected, though rarely at high concentrations. The composition of CH<sub>4</sub>, where present, suggests that it has been produced in the superficial sediments by microbial reaction of organic matter.

Ajhil: /* Groundwater */

2026-05-12T08:10:11Z

Groundwater

← Older revision		Revision as of 09:10, 12 May 2026
Line 44:		Line 44:

	* the groundwater in both the superficial deposits and Sherwood Sandstone Group aquifers has near-neutral pH and is largely anoxic (it has low or no dissolved oxygen)		* the groundwater in both the superficial deposits and Sherwood Sandstone Group aquifers has near-neutral pH and is largely anoxic (it has low or no dissolved oxygen)
	* concentrations of nitrate (NO<sub>3</sub>–) are low		* concentrations of nitrate (NO<sub>3</sub><sup>–</sup>) are low
	* concentrations of iron (Fe) and manganese (Mn) are high		* concentrations of iron (Fe) and manganese (Mn) are high
	* concentrations of arsenic (As) and ammonium (NH<sub>4</sub>+) are high in some of the groundwater tested		* concentrations of arsenic (As) and ammonium (NH<sub>4</sub>+) are high in some of the groundwater tested

← Older revision		Revision as of 10:01, 12 May 2026
Line 68:		Line 68:
	[[Image:Figure_4e_Iron.jpg\|frameless\|center\|500px\|]]		[[Image:Figure_4e_Iron.jpg\|frameless\|center\|500px\|]]
	[[Image:Figure_4f_Methane.jpg\|frameless\|center\|500px\|]]		[[Image:Figure_4f_Methane.jpg\|frameless\|center\|500px\|]]
			<br>
	[[Image:Figure_5a_Calcium.jpg\|frameless\|center\|500px\|]]		[[Image:Figure_5a_Calcium.jpg\|frameless\|center\|500px\|]]
	[[Image:Figure_5b_Sodium.jpg\|frameless\|center\|500px\|]]		[[Image:Figure_5b_Sodium.jpg\|frameless\|center\|500px\|]]
Line 75:		Line 75:
	[[Image:Figure_5e_Iron.jpg\|frameless\|center\|500px\|]]		[[Image:Figure_5e_Iron.jpg\|frameless\|center\|500px\|]]
	[[Image:Figure_5f_Methane.jpg\|frameless\|center\|500px\|]]		[[Image:Figure_5f_Methane.jpg\|frameless\|center\|500px\|]]
			<br>
	[[Image:Figure_6a_Calcium.jpg\|frameless\|center\|500px\|]]		[[Image:Figure_6a_Calcium.jpg\|frameless\|center\|500px\|]]
	[[Image:Figure_6b_Sodium.jpg\|frameless\|center\|500px\|]]		[[Image:Figure_6b_Sodium.jpg\|frameless\|center\|500px\|]]