LIST OF TABLES

TableNo. Title Page

2.1 Historical loading of BODs to Galveston Bay system (circa 1970) 212.2 Estimates of Municipal and Industrial Wastewater Discharges by 23

County (circa 1970)2.3 Estimates of salt brine discharges and disposal method by county in 24

the Galveston Bay area (circa 1961)2.4 Neleigh's estimated loads of selected pollutants into the Galveston 26

Bay system by water quality segment (circa 1974)2.5 Neleigh's estimated loads of selected pollutants into the Galveston 30

Bay system by pollutant (circa 1974)2.6 Estimated loading of nonconventional and toxic pollutants into the 33

Galveston Bay system (1985-87)2.7 Estimates of selected pollutant loadings into the Galveston Bay 36

system (1985-87) from permitted dischargers and major tributaries2.8 Annual pollutant discharges by major source category and percent 40

of annual total discharge (1987)2.9 Non-point source loads into Galveston Bay for average (1987) year 423.1 Texas Water Quality Segments used to aggregate point source 51

loading estimates3.2 Water quality parameters included in point source loading 52

estimates3.3 Effluent parameter code prefix and suffix match 543.4 Typical Pollutant Concentrations from Pacheco et al. (1990) 613.5 Texas Water Commission source of wastewater codes 633.6 Ratios used to correct Typical Pollutant Concentrations from 68

experience with Galveston Bay system dischargers3.7 Example of effluent load summary for discharges into the Galveston 69

Bay system in 19903.8 Determination of allowable concentrations of metals in effluents 73

discharging to marine and estuarine waters3.9 Typical pollutant concentrations corrected to meet current Texas 75

surface water quality criteria3.10 USGS gauge names, numbers, and drainage areas used in 77

estimating tributary loading into Galveston Bay3.11 Annual inflows to Lake Houston (1965-88) 833.12 Evaporation from Lake Houston (1965-88) 843.13 Withdrawals from Lake Houston (1965-88) 853.14 Changes in storage in Lake Houston (1965-88) 863.15 Annual water balance in Lake Houston (1965-88) 884.1 Summary of statistics for 30-day average BODs concentrations in 93

selected individual municipal wastewater discharges for 19904.2 Summary of statistics for constituents in industrial wastewater 95

discharges for 19904.3 Total effluent flows into Galveston Bay in 1990 96

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4.4 Effluent flows without cooling water into Galveston Bay in 1990 974.5 Effluent loads of BOD5 into Galveston Bay in 1990 984.6 Effluent loads of TSS into Galveston Bay in 1990 1004.7 Effluent loads of oil and grease into Galveston Bay in 1990 1014.8 Effluent loads of total nitrogen into Galveston Bay in 1990 1024.9 Effluent loads of total phosphorus into Galveston Bay in 1990 1034.10 Effluent loads of total fecal Coliforms into Galveston Bay in 1990 1044.11 Effluent loads of total arsenic into Galveston Bay in 1990 1064.12 Effluent loads of total cadmium into Galveston Bay in 1990 1074.13 Effluent loads of total chromium into Galveston Bay in 1990 1084.14 Effluent loads of total copper into Galveston Bay in 1990 1094.15 Effluent loads of total iron into Galveston Bay in 1990 1104.16 Effluent loads of total lead into Galveston Bay in 1990 1114.17 Effluent loads of total mercury into Galveston Bay in 1990 1124.18 Effluent loads of total zinc into Galveston Bay in 1990 1134.19 Effluent loads of PCB into Galveston Bay in 1990 1144.20 Effluent loads of total arsenic into Galveston Bay in 1990 with 116

revised Typical Pollutant Concentrations4.21 Effluent loads of total cadmium into Galveston Bay in 1990 with 117

revised Typical Pollutant Concentrations4.22 Effluent loads of total chromium into Galveston Bay in 1990 with 118

revised Typical Pollutant Concentrations4.23 Effluent loads of total copper into Galveston Bay in 1990 with 119

revised Typical Pollutant Concentrations4.24 Effluent loads of total lead into Galveston Bay in 1990 with revised 120

Typical Pollutant Concentrations4.25 Effluent loads of total mercury into Galveston Bay in 1990 with 121

revised Typical Pollutant Concentrations4.26 Effluent loads of total zinc into Galveston Bay in 1990 with revised 122

Typical Pollutant Concentrations4.27 Summary of effluent loads of constituents into Galveston Bay in 123

19904.28 Metals loading from tributaries into Galveston Bay corrected from 152

dissolved to total metal loading4.29 Annual areal tributary loads 1534.30 Flows from waste discharges (1990) and tributaries (1968-88 155

average) including cooling water4.31 Flows from waste discharges (1990) and tributaries (1968-88 156

average) excluding cooling water flows4.32 Loading from waste discharges (1990) and tributaries (1968-88 157

average) for BODs4.33 Loading from waste discharges (1990) and tributaries (1968-88 158

average) for total suspended solids4.34 Loading from waste discharges (1990) and tributaries (1968-88 159

average) for total nitrogen4.35 Loading from waste discharges (1990) and tributaries (1968-88 160

average) for total phosphorus4.36 Loading from waste discharges (1990) and tributaries (1968-88 162

average) for oil and grease

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4.37 Loading from waste discharges (1990) and tributaries (1968-88 163average) for fecal Coliform bacteria

4.38 Loading from waste discharges (1990) and tributaries (1968-88 164average) for total arsenic

4.39 Loading from waste discharges (1990) and tributaries (1968-88 165average) for total cadmium

4.40 Loading from waste discharges (1990) and tributaries (1968-88 166average) for total chromium

4.41 Loading from waste discharges (1990) and tributaries (1968-88 167average) for total copper

4.42 Loading from waste discharges (1990) and tributaries (1968-88 168average) for total iron

4.43 Loading from waste discharges (1990) and tributaries (1968-88 169average) for total lead

4.44 Loading from waste discharges (1990) and tributaries (1968-88 170average) for total mercury

4.45 Loading from waste discharges (1990) and tributaries (1968-88 171average) for total zinc

4.46 Loading from waste discharges (1990) and tributaries (1968-88 172average) for PCB

4.47 Active permitted tidal disposal brine discharges in Galveston Bay in 1731992

5.1 Comparison of annual pollutant discharges from wastewater 179discharges from this study and those of Pacheco et al. (1990)

5.2 Summary of constituent loads into the Galveston Bay system from 181point sources, tributaries, and non-point sources

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