The impact of urban groundwater upon surface water - eTheses ...

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(a) Concentration ug/l (b) Concentration μgl -1 10 9 8 7 6 5 4 3 2 1 0 10 9 8 7 6 5 4 3 2 1 0 Quality of water discharging through the northern side of the river bed - longitudinal profile 25 TCE, 24 Cis DCE PCE TCE cis-1,2-DCE trans-1,2-DCE 1,1-DCE 1,1,1-TCA 1,1-DCA TCM 5 11 12 4 2 1 13 14 6 19 15 10 8 9 16 7 17 18 Riverbed profile number Quality of water discharging through the Southern side of the river bed - longitudinal profile 11 chloroform 16 cis DCE 47 TCA, 62 TCE PCE TCE cis-1,2-DCE trans-1,2-DCE 1,1-DCE 1,1,1-TCA 1,1-DCA TCM 5 11 12 4 2 1 13 14 6 19 15 10 8 9 16 7 17 18 Riverbed profile number 110 TCA, 25 DCA, 52 TCE, 10.8 cis DCE Figure 7.22 Chlorinated solvent concentrations in groundwater discharging through the (a) North and (b) South banks of the study reach.
WATER QUALITY INTERACTIONS The Environment Agency has undertaken a survey for 56 pesticides, herbicides and selected trace organic compounds in water supply rivers, for the Midland Region (Environment Agency, 1998). The pesticides mecoprop and isoproturon and the organic compounds nonyl phenol, chloroform and trichloroethene were identified in the sewage treatment discharges from Ray Hall and Minworth in the upper Tame. In addition to these compounds MCPA was identified in the surface water at Lea Marston, a distance of 10 km downstream of the study area. No surface water sampling was conducted within the upper Tame in this survey. No work has been done on the groundwater contribution of pesticides to the upper Tame, but they may be present in the groundwater owing to the extensive use of amenity and industrial pesticides in major conurbations. 7.8 Biodegradation and transport of chlorinated solvents across the groundwater/surface water interface The degradation of PCE, TCE and 1,1,1-TCA is indicated by the presence of cis 1,2-DCE and 1,1-DCA within the groundwater. The rate of abiotic transformation is generally low and most reactions are probably a result of microbially mediated reductive hydrogenolysis (Fetter, 1999). The reduction follows a pathway with decreasing chlorination from PCE to TCE to DCE to vinyl chloride to ethene (Figure 7.23), and from TCA to DCA to chloroethane to ethane. Cis 1,2-DCE is only produced as a product of biodegradation and the ratio of TCE/DCE provides an indication of the extent to which biodegradation has occurred. The average TCE/DCE ratio varied from 62 in the abstraction wells to 2 in the shallow groundwater and 4 in the riverbed piezometers. In the case where either only TCE or only DCE was detected the ratio was calculated using the detection limit for the non-detected compound. Average values were taken for the north and south bank of each profile to remove 295
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THE IMPACT OF URBAN GROUNDWATER UPO
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ABSTRACT A field-based research stu
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ACKNOWLEDGEMENTS I would like to th
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3.4.1 Solid Geology ...............
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5.5.2 Riverbed Sediment Core Data a
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6.10 Investigation of groundwater-s
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LIST OF FIGURES 2.1 Conceptual mode
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6.1 Schematic diagram for the analy
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LIST OF TABLES Table 3.1 Descriptio
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APPENDICES Appendices 1, 11, 19, 20
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1.1 Project outline CHAPTER 1. INTR
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4) to develop suitable monitoring m
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INTRODUCTION European Commission Wa
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REVIEW 2.1) and surface water may o
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REVIEW features of groundwater/surf
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REVIEW provide refuge to benthic in
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Abstraction For drinking water supp
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REVIEW occur such as biodegradation
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2.2.1 Water quality studies REVIEW
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REVIEW investigated groundwater/sur
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REVIEW owing to their widespread de
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REVIEW have been used to determine
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REVIEW and under conditions of non-
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(b) (a) River Tame 10 m topographic
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STUDY SETTING But under the General
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(a) Land Use In The River Tame Corr
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(a) (b) Figure 3.3 (a) Photograph o
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Figure 3.4 Schematic geology of the
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Table 3.1 Description of geological
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Wildmoor Sandstone Formation (middl
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STUDY SETTING Man-made excavations
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STUDY SETTING Tame were effluent to
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(a) (b) (c) Figure 3.9 (a) Postulat
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STUDY SETTING this restricts the le
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Figure 3.10 Schematic cross section
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STUDY SETTING water quality through
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STUDY SETTING (Ford, 1990) from nin
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STUDY SETTING dry cleaning industry
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MONITORING NETWORKS AND METHODS CHA
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2 9 4 0 0 0 2 8 8 0 0 0 4020000 410
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MONITORING NETWORKS AND METHODS The
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Water quality data were collected i
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MONITORING NETWORKS AND METHODS pie
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MONITORING NETWORKS AND METHODS pre
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MONITORING NETWORKS AND METHODS the
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MONITORING NETWORKS AND METHODS (Ga
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MONITORING NETWORKS AND METHODS Acc
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MONITORING NETWORKS AND METHODS bor
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MONITORING NETWORKS AND METHODS tha
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MONITORING NETWORKS AND METHODS des
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4.7.3 Grain size analyses by the Ha
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K = hydraulic conductivity (feet da
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MONITORING NETWORKS AND METHODS A s
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MONITORING NETWORKS AND METHODS Run
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MONITORING NETWORKS AND METHODS nex
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MONITORING NETWORKS AND METHODS Dif
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4.9.3 Radial Flow Analytical Soluti
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q = - k dh dx River Riverbed q = th
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Determinands Method of analyses Ana
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MONITORING NETWORKS AND METHODS dif
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5.2 Groundwater in the Tame Valley
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Total Monthly Volume Abstracted (m
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4020000 4100000 Bescot GS 91, 182 1
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5.3.2 Baseflow Analyses GROUNDWATER
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GROUNDWATER FLOW TO THE RIVER TAME
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Temperature C o 20 19.5 19 18.5 18
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5 cm Figure 5.16 (a) Riverbed core
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Frequency 9 8 7 6 5 4 3 2 1 0 10 20
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Summary of Darcy Specific Discharge
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Location Specific Discharge (md -1
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5.8 The Hydrogeological Setting of
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Level ( m.a.o.d ) Level ( m.a.o.d )
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5.9 Concluding Discussion GROUNDWAT
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CHAPTER 6. THE MODELLING OF GROUNDW
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6.2.1 Analytical Model, Steady Stat
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GROUNDWATER FLOW MODELLING The rive
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GROUNDWATER FLOW MODELLING 6.3.1 Re
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39 57 Figure 6.2 Regional Setting f
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GROUNDWATER FLOW MODELLING increase
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GROUNDWATER FLOW MODELLING general,
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Groundwater head contours (1m) 93.0
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GROUNDWATER FLOW MODELLING 6.4.3 Gr
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11 12 13 # # # # # # 96 97 98 Colum
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GROUNDWATER FLOW MODELLING unsatura
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River level data GROUNDWATER FLOW M
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GROUNDWATER FLOW MODELLING of geolo
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GROUNDWATER FLOW MODELLING The FAT3
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GROUNDWATER FLOW MODELLING and grav
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Elevation of cell centre (m.a.o.d)
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GROUNDWATER FLOW MODELLING transmis
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GROUNDWATER FLOW MODELLING on each
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GROUNDWATER FLOW MODELLING of 0.5md
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Analytical solution for the saturat
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GROUNDWATER FLOW MODELLING presence
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GROUNDWATER FLOW MODELLING in secti
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GROUNDWATER FLOW MODELLING The aver
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GROUNDWATER FLOW MODELLING would re
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GROUNDWATER FLOW MODELLING the aqui
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95 95 95 95 39 MODFLOW Particle Tra
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GROUNDWATER FLOW MODELLING Historic
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Discharge to the river m 3 d -1 % v
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GROUNDWATER FLOW MODELLING 6.10.2 A
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GROUNDWATER FLOW MODELLING investig
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GROUNDWATER FLOW MODELLING across t
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GROUNDWATER FLOW MODELLING by the F
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Specific discharge to the river fro
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GROUNDWATER FLOW MODELLING in time
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GROUNDWATER FLOW MODELLING unsatura
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GROUNDWATER FLOW MODELLING amplitud
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Depth (cm) -80 -100 -120 -140 -160
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Depth (cm) -40 -60 -80 -100 -120 -1
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GROUNDWATER FLOW MODELLING cycles o
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6.12 Conclusions GROUNDWATER FLOW M
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GROUNDWATER FLOW MODELLING consider
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WATER QUALITY INTERACTIONS CHAPTER
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Water Quality Data From Sutton Park
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WATER QUALITY INTERACTIONS 7.1 Indi
Page 263 and 264: WATER QUALITY INTERACTIONS (the fur
Page 265 and 266: WATER QUALITY INTERACTIONS Underlyi
Page 267 and 268: WATER QUALITY INTERACTIONS Oxygen l
Page 269 and 270: (a) (b) Eh (mv) DO (mgl -1 ) 600 50
Page 271 and 272: WATER QUALITY INTERACTIONS riverbed
Page 273 and 274: WATER QUALITY INTERACTIONS samples
Page 275 and 276: WATER QUALITY INTERACTIONS errors i
Page 277 and 278: WATER QUALITY INTERACTIONS industri
Page 279 and 280: (a) (b) (c) Depth below river bed (
Page 281 and 282: WATER QUALITY INTERACTIONS within 5
Page 283 and 284: WATER QUALITY INTERACTIONS The grea
Page 285 and 286: Cation Content (mgl -1 ) 300 250 20
Page 287 and 288: (a) (b) (c) Calcium Concentration m
Page 289 and 290: WATER QUALITY INTERACTIONS in the u
Page 291 and 292: 7.5 Toxic Metals WATER QUALITY INTE
Page 293 and 294: WATER QUALITY INTERACTIONS parkland
Page 295 and 296: 95 94 93 92 OD (meters) 91 90 89 88
Page 297 and 298: (a) (b) (c) Chloride (meql -1 ) Nit
Page 299 and 300: (a) (b) Depth below river bed (cm)
Page 301 and 302: (a) (c) (e) Depth below river bed (
Page 303 and 304: WATER QUALITY INTERACTIONS depth. T
Page 305 and 306: WATER QUALITY INTERACTIONS extent.
Page 307 and 308: Number of samples greater than dete
Page 309 and 310: WATER QUALITY INTERACTIONS The only
Page 311 and 312: WATER QUALITY INTERACTIONS source f
Page 313: WATER QUALITY INTERACTIONS The surf
Page 317 and 318: WATER QUALITY INTERACTIONS the bias
Page 319 and 320: WATER QUALITY INTERACTIONS The grou
Page 321 and 322: WATER QUALITY INTERACTIONS value of
Page 323 and 324: Depth below river bed (cm) 0 20 40
Page 325 and 326: WATER QUALITY INTERACTIONS There is
Page 327 and 328: WATER QUALITY INTERACTIONS Standard
Page 329 and 330: WATER QUALITY INTERACTIONS general
Page 331 and 332: WATER QUALITY INTERACTIONS attenuat
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Page 335 and 336: GROUNDWATER FLUX CHAPTER 8. ESTIMAT
Page 337 and 338: GROUNDWATER FLUX solution then the
Page 339 and 340: GROUNDWATER FLUX the riverbed piezo
Page 341 and 342: HCO3 - Determinant Mean Groundwater
Page 343 and 344: Residential roof run-off *1 General
Page 345 and 346: GROUNDWATER FLUX availability of sa
Page 347 and 348: Discharge MLd -1 350 330 310 290 27
Page 349 and 350: (a) Dissolved Mass gs -1 Dissolved
Page 351 and 352: GROUNDWATER FLUX exception of Si, C
Page 353 and 354: Location Distance from Bescot GS (k
Page 355 and 356: GROUNDWATER FLUX groundwater is a s
Page 357 and 358: Maximum concentration in the plume
Page 359 and 360: GROUNDWATER FLUX 150 m was used, to
Page 361 and 362: Estimate of mass flux from the plum
Page 363 and 364: GROUNDWATER FLUX an urban setting.
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GROUNDWATER FLUX improvement of sur
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CONCLUSIONS CHAPTER 9. CONCLUSIONS
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CONCLUSIONS surface-water quality b
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CONCLUSIONS 1945) which caused sign
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CONCLUSIONS Objective 4. To develop
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CONCLUSIONS On a catchment scale, g
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CONCLUSIONS other compounds of inte
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CONCLUSIONS groundwater and surface
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REFERENCES REFERENCES Allen, D.J.,
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REFERENCES Bredehoeft, J.D., & Papa
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REFERENCES De Marsily, G., 1986. Qu
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REFERENCES Ford, M., Tellam, J.H.,
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REFERENCES Hooda, P.S., Moynagh, M.
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REFERENCES Kuwabara, J., Berelson,
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REFERENCES Modica, E., 1993. Hydrau
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REFERENCES Rivett, M.O., Feenstra,
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REFERENCES Stagg, K.A., 2000. An in
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REFERENCES Younger, P.L., 1989. Str
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