Table Page 



17 Effluent Limitations for Stormwater Runoff New Source 

 Federal Standards in Pounds/Thousand Gallons of Flow 



(mg/1) 67 



18 Sources and Characteristics of Petroehemical Solid Waste ... 69 



19 Petrochemical Processes as Waste Sources 70 



20 Composition of Cooling Water Effluent of Petrochemical 



Plants 73 



21 Five Common Types of Dredge Rigs 87 



22 Discharge Rates for Hydraulic Dredge Pipelines 93 



23 Average Efficiency of Primary and Secondary Sewage 



Treatment Plants 137 



24 Length of Ocean Outfall for Secondary-Treatment Effluent 

 That Can Be Constructed at Cost of Conversion to Advanced 

 Wastewater Treatment 138 



25 Estimated Quantities of Pollutants That Could Enter 



Municipal Receiving Waters in a Hypothetical City 149 



26 Measures for Reducing and Delaying Urban Storm Runoff .... 154 



27 Generalized Analyses of Various Liquid Wastes (in Parts 



per Million) 155 



28 Permitted Current (A) and 1983 Projected (B) Effluent 

 Discharges (in Pounds per Day) for a 250,000 BBL per Day 

 Refinery 160 



29 Tanker Dimensions and Pumping Rates 188 



30 Estimated Annual Oil Pollution of the Oceans 192 



XVI 



