Engineering Design Manual - Loudoun Water

TABLE OF CONTENTS
PAGE
5.6 PRETREATMENT ................................................................................................................. 64
A. Definitions ...................................................................................................................................64
B. Guidelines and Review Process for Interceptors and Reclamation Systems...........................65
C. Design Requirements..................................................................................................................66
D. Significant Industrial Users........................................................................................................67
5.7 GRINDER PUMPS ................................................................................................................ 67
A. Definitions and Conditions of Service........................................................................................67
B. Installations to Meet Loudoun Water Intent and Policy Standards ........................................68
C. Design Approval Required..........................................................................................................69
D. Financial Considerations ............................................................................................................69
E. Notice Provision and Covenants.................................................................................................70
F. Laterals ........................................................................................................................................70
5.8 INSTALLATION REQUIREMENTS ...........................................................................................71
A. Excavation, Bedding and Backfill............................................................................................... 71
B. Acceptance Tests .........................................................................................................................73
Chapter 6: Reclaimed Water ..................................................................... 75
6.1 SCOPE .................................................................................................................................75
A. Intent............................................................................................................................................75
B. Minimums ...................................................................................................................................75
6.2 HYDRAULIC REQUIREMENTS ...............................................................................................75
A. Capacity........................................................................................................................................75
B. Distribution Piping......................................................................................................................76
C. Hydraulic Models ........................................................................................................................76
6.3 RECLAIMED WATERLINE LAYOUT ........................................................................................77
A. Plan View ..................................................................................................................................... 77
B. Profile...........................................................................................................................................79
C. Easements................................................................................................................................... 80
6.4 FLUSHING HYDRANTS..........................................................................................................81
A. Plan View ..................................................................................................................................... 81
B. Profile...........................................................................................................................................82
6.5 SERVICE CONNECTIONS AND METERS ................................................................................. 82
A. Reuse Service Connection...........................................................................................................82
B. Reuse Meters ...............................................................................................................................83
C. Sizing Reuse Meters ....................................................................................................................84
6.6 CROSS CONNECTION AND BACKFLOW PREVENTION............................................................. 85
6.7 IDENTIFICATION ................................................................................................................. 85
A. Labeling and Marking of Underground Facilities .....................................................................85
B. Labeling and Marking Above-Ground or Indoors.....................................................................86
C. Conversion of Piping to Reclaimed Service ...............................................................................86
6.8 INSTALLATION REQUIREMENTS .......................................................................................... 86
A. Excavation, Bedding and Backfill...............................................................................................87
B. Acceptance Tests ........................................................................................................................ 88
Engineering Design Manual
September 2010
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