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<br />DRAINAGE CRITERIA MANUAL (V. 3)
<br />
<br />STORMWATER OUALlTY MANAGEMENT
<br />
<br />STORMWATER QUALITY MANAGEMENT
<br />
<br />CONTENTS
<br />
<br />Why is Stormwater Runoff Ouality Important ........,................................................................... SO.1
<br />1.1 Environmental Impacts ...............................,...........................................,..................... SO.1
<br />1.2 NPDES Regulations ....................................."..,...................................,..,..,................. SO.3
<br />1.2.1 Phase I Stormwater Regulations..................................................................... SO.3
<br />1.2.2 Phase II Stormwater Regulations.................................................................... SO.8
<br />1.2.3 Non-Stormwater Discharges ....................,...................................................... SO.9
<br />
<br />1.3 Summary ......................................................................................................,...,......... SO.12
<br />
<br />2 Stormwater Ouality Characteristics and Sources....................,.............................................., SO.13
<br />
<br />2.1 General.......,....,................................................,...",.........................................,.".".., SO.13
<br />2.2 Typical Constituent Concentrations in Urban Runoff ..........,...................................... SO.13
<br />
<br />3 Overview of Best Management Practices ...................................,........................................... SO.15
<br />3.1 Nonstructural and Structural BMPs .................................,...,...................................... SO.15
<br />3.2 Stormwater Ouality Management Strategy......,...................................................,..... SO.16
<br />3.2.1 Municipalities .............................,.."."..,......................................................... SO.16
<br />3.2.2 Industrial and Commercial.....................................,....................................... SO-16
<br />3.3 Erosion Control During Construction ......,.....,......,..................................................... SO.19
<br />
<br />TABLES
<br />
<br />1.1 Urban Runoff Pollutants ..............................,."."."."..,...,.......................................................... SO.2
<br />1-2 Activities and Associated Pollutants,...,....,..,..,..".,."..,.............................................................. SO.4
<br />1.3 Non.Stormwater Discharges .......,..............................................................................,.,.."...... SO.l 0
<br />1.4 Allowable Non.Stormwater Discharges................................................,...,........,..,.,.........,...... SO.10
<br />
<br />2.1 Average Event Mean Concentrations by Land Use ........................................,....................... SO.14
<br />
<br />FIGURES
<br />
<br />3.1 Storm water Pollution Control Selection Flow Diagram ......................................,.................... SO.17
<br />3.2 Multi.Level Stormwater Ouality Management Strategy..............................................,............ SO.18
<br />
<br />X-X-98
<br />URBAN DRAINAGE AND FLOOD CONTROL DISTRICT
<br />DEN/RH1472.0OC/981800031.DOC
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