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ANALYSIS OF THE 1998 WATER-DISTRIBUTION SYSTEM
SERVING THE DOVER TOWNSHIP AREA, NEW JERSEY:

Field Data Collection Activities and
Water Distribution System Modeling

TABLE OF CONTENTS

AUTHORS

FOREWORD

CONTENTS

Supplemental Data
List of Illustrations
List of Tables
Conversion Factors for Units
Glossary Abbreviations
Sea Level Definition

ABSTRACT

INTRODUCTION

BACKGROUND

Method of Analysis
Description of the Water-Distribution System
Initial Model Simulation
Technical Work Group and Expert Panel Review

FIELD-DATA COLLECTION ACTIVITIES

Hydrant Selection
Data Recording Equipment
Test Protocol
Analysis of Pressure Data

WATER-DISTRIBUTION SYSTEM MODEL DEVELOPMENT

Historical Background
Hydraulic Simulation Model
Water-Quality Simulation Model

HYDRAULIC MODEL CALIBRATION

Overview
Requirements for Model Input

Junction Data
Tank Geometry and Initial Water-Level Data
Pipeline Data
Pump Data
Pump Control Data
Pattern Data
Time Parameter Data

Calibration Procedures

Calibration Parameters
Calibration Statistics

Sensitivity Analysis

WATER-QUALITY SIMULATION

Use of the Model for Epidemiologic Investigations

Proportionate Contribution of Water for the 1998 System

Areal Distributions, Dover Township Area, New Jersey
Selected Locations, Dover Township Area, New Jersey

Generalized Approach for Historical Reconstruction

SUMMARY

Acknowledgments
Disclaimer
Availability of Model Input Data Files

REFERENCES

SUPPLEMENTAL DATA

Appendix A. Photographs showing locations of test hydrants used for pressure tests
Appendix B. Letter of calibration for pressure data loggers
Appendix C. Entry form used to record installation information for pressure tests
Appendix D. Graphs of measured pressure, one-minute sampling interval, March 1998
Appendix E. Graphs of measured pressure, one-minute sampling interval, August 1998
Appendix F. Graphs of flow versus head for booster pumps
Appendix G. Tables and graphs of consumption demand factors and groundwater well pumping factors, March 1998 simulation
Appendix H. Tables and graphs of consumption demand factors and groundwater well pumping factors, August 1998 simulation
Appendix I. Graphs and tables of measured and simulated pressure, March 1998
Appendix J. Graphs and tables of measured and simulated pressure, August 1998
Appendix K. Graphs and tables of measured and simulated hydraulic head for storage tanks, March 1998
Appendix L. Graphs and tables of measured and simulated hydraulic head for storage tanks, August 1998
Appendix M. Graphs and tables of measured and simulated booster pump flows, March 1998
Appendix N. Graphs and tables of measured and simulated booster pump flows, August 1998
Appendix O. Graphs and tables of measured and simulated well flows, March 1998
Appendix P. Graphs and tables of measured and simulated well flows, August 1998
Appendix Q. Graphs of simulated barium concentration in storage tanks showing a dynamic equilibrium condition

LIST OF ILLUSTRATIONS

Plates 1-22.  Shown as HTML documents or PDF files. To download the PDF file, you will need Adobe Acrobat Reader.
Maps showing:

1. Location of area of investigation, Dover Township, Ocean County, New Jersey  (HTML)
   PDF version  (requires Adobe Acrobat Reader)
   
   
2. Water-distribution system serving the Dover Township area, New Jersey, 1998
   PDF version  (requires Adobe Acrobat Reader)
   
   
3. Equivalent hydraulic network used for initial simulation of the water-distribution system serving the Dover Township area, New Jersey
   PDF version  (requires Adobe Acrobat Reader)
   
   
4. Locations of proposed test hydrants for collecting system-wide pressure data, Dover Township area, New Jersey
   PDF version  (requires Adobe Acrobat Reader)
   
   
5. Locations of proposed alternate test hydrants for collecting system-wide pressure data, Dover Township area, New Jersey
   PDF version  (requires Adobe Acrobat Reader)
   
   
6. Locations of test hydrants used for installation of pressure data loggers to collect system-wide pressure data, Dover Township area, New Jersey
   PDF version  (requires Adobe Acrobat Reader)
   
   
7. Distribution of nodal values of average consumption used to model the 1998 water-distribution system serving the Dover Township area, New Jersey
   PDF version  (requires Adobe Acrobat Reader
   
   
8. Distribution of pipeline diameters used to model the 1998 water-distribution system serving the Dover Township area, New Jersey
   PDF version  (requires Adobe Acrobat Reader)
   
   
9. Distribution of Hazen-Williams "C-factors" assigned to pipelines used to model the 1998 water-distribution system serving the Dover Township area, New Jersey
   PDF version  (requires Adobe Acrobat Reader)
   
   
10. Areal distribution of mean absolute pressure difference between March 1998 test data and simulation, Dover Township area, New Jersey
    PDF version  (requires Adobe Acrobat Reader)
    
    
11. Areal distribution of mean absolute pressure difference between August 1998 test data and simulation, Dover Township area, New Jersey
    PDF version  (requires Adobe Acrobat Reader)
    
    
12. Areal distribution of measured and simulated barium concentrations, March and April 1996, Dover Township area, New Jersey
    PDF version  (requires Adobe Acrobat Reader)
    
    
13. Areal distribution of simulated proportionate contribution of water from the Berkeley wells (33, 34, 35) to locations in the Dover Township area, New Jersey, March 1998 conditions
    PDF version  (requires Adobe Acrobat Reader)
    
    
14. Areal distribution of simulated proportionate contribution of water from the South Toms River well (32) to locations in the Dover Township area, New Jersey, March 1998 conditions
    PDF version  (requires Adobe Acrobat Reader)
    
    
15. Areal distribution of simulated proportionate contribution of water from the Route 70 well (31) to locations in the Dover Township area, New Jersey, March 1998 conditions
    PDF version  (requires Adobe Acrobat Reader)
    
    
16. Areal distribution of simulated proportionate contribution of water from the Parkway well field ground-level storage tank to locations in the Dover Township area, New Jersey, March 1998 conditions
    PDF version  (requires Adobe Acrobat Reader)
    
    
17. Areal distribution of simulated proportionate contribution of water from the Berkeley wells (33, 34, 35) to locations in the Dover Township area, New Jersey, August 1998 conditions
    PDF version  (requires Adobe Acrobat Reader)
    
    
18. Areal distribution of simulated proportionate contribution of water from the Brookside well (43) to locations in the Dover Township area, New Jersey, August 1998 conditions
    PDF version  (requires Adobe Acrobat Reader)
    
    
19. Areal distribution of simulated proportionate contribution of water from the Route 70 well (31) to locations in the Dover Township area, New Jersey August 1998 conditions
    PDF version  (requires Adobe Acrobat Reader)
    
    
20. Areal distribution of simulated proportionate contribution of water from theParkway well field ground-level storage tank to locations in the Dover Township area, New Jersey, August 1998 conditions
    PDF version  (requires Adobe Acrobat Reader)
    
    
21. Areal distribution of simulated proportionate contribution of water from the Holly Plant ground-level storage tank to locations in the Dover Township area, New Jersey, August 1998 conditions
    PDF version  (requires Adobe Acrobat Reader)
    
    
22. Areal distribution of simulated proportionate contribution of water from the Windsor ground-level storage tank to locations in the Dover Township area, New Jersey, August 1998 conditions
    PDF version  (requires Adobe Acrobat Reader)

1. Time pattern for water usage: (A) winter-time demand, March 24-25,1998, and (B) peak-demand, August 14-15, 1998

Figures 2-10. Photographs showing:

2. Components of hydrant pressure measurement configuration: (A) Dickson A7983 hydrant adapter kit, (B) Dickson brass lever handle shut-off valve, 1/4 NPTF x 1/4 NPTF, shown in "off" position, (C) coiled pressure hose with a quick release coupling, and (D) RADCOM Lolog LL™ pressure data logger
3. Assembly of hydrant pressure measurement configuration: (A) hydrant adapter kit, (B) brass shut-off valve in "on" position, (C) coiled pressure hose with quick release coupling, and (D) RADCOM Lolog LL™ pressure data logger
4. Configuration of test equipment showing method of downloading data from pressure logger to Psion HC-120™ hand-heldcomputer using an RS232C cable attached to pressure logger's infra-red port
5. Water utility staff flushing test hydrant H-9 in preparation for pressure data logger installation
6. (A) hydrant adapter kit, brass lever handle shut-off valve in "off" position, and Ashcroft Duralife industrial pressure gauge, and (B) installation of equipment on test hydrant H-9
7. Attachment of pressure data logger installation to test hydrant H-23
8. ATSDR staff querying pressure data logger attached to test hydrant H-11 for parameters of date, time, and pressure using the Psion HC-120™ hand-held computer
9. ATSDR staff covering test hydrant H-11 with a heavy-duty (0.003 in.) plastic bag to indicate "out-of-service" condition
10. Data being downloaded from the Psion HC-120™ hand-held computer to a laptop computer using the RS232 ports on both computers

11. Comparison of mean absolute pressure difference (d_P) for test hydrants, March and August 1998 simulations
12. Comparison of measured and simulated hourly pressure data: (A) March 24-25, 1998, and (B) August 14-15, 1998
13. Frequency of absolute pressure difference between March and August 1998 test data and simulations
14. Comparison of simulated percentage of water from points of entry to selected test hydrant locations, Dover Township area, New Jersey:(A) March 1998 conditions, and (B) August 1998 conditions

LIST OF TABLES:

Table

1. Description of water-distribution system tanks, wells, and pumps, Dover Township area, New Jersey
2. Identification, coordinates, and location of test hydrants used for the March and August 1998 pressure tests, Dover Township area, New Jersey
3. Hydrant identification and corresponding data logger serial numbers used for theMarch and August 1998 pressure tests, Dover Township area, New Jersey
4. Comparison of maximum and minimum pressures obtained from the March and August 1998 pressure tests, Dover Township area, New Jersey
5. Set of input data properties required by EPANET to model the water-distribution system serving the Dover Township area, New Jersey
6. Sources for data and model parameter values used to construct the water-distribution system model, Dover Township area, New Jersey
7. Storage tank identification, hydraulic data, and dimensions used for EPANET simulations of the water-distribution system serving the Dover Township
8. Pipeline characteristics of the water-distribution system, Dover Township area, New Jersey
9. Pump identification, characteristic data, calibrated values, and status during March and August 1998 pressure tests, Dover Township area, New Jersey
10. Qualitative evaluation of sources for model error, water-distribution system model, Dover Township area, New Jersey
11. Summary of comparisons between test data and model simulations for the March and August 1998 pressure tests described in report, Dover Township area, New Jersey
12. Variation of parameter values used to conduct sensitivity analyses using the calibrated water-distribution system model, Dover Township area, New Jersey
13. Comparison of simulation statistics for the water-distribution system model using calibrated and varied parameters, Dover Township area, New Jersey
14. Identification of barium sampling locations and comparison of measured and simulated barium concentration values, Dover Township area New Jersey
15. Simulated proportionate contribution of water for 1998 conditions from points of entry to selected locations, Dover Township area, New Jersey

CONVERSION FACTORS FOR UNITS

Factors for converting inch-pound units to the International System (SI) of units are given below:
Multiply	By	To obtain
cubic foot per second (ft3/s)	0.02832	cubic meter per second (m3/s)
foot (ft)	0.3048	meter (m)
gallon (gal)	3.785	liter(L)
gallon per minute (gpm)	0.06309	liter per second (L/s)
inch (in.)	2.54	centimeter (cm)
mile (mi)	1.609	kilometer (km)
million gallons (Mgal)	0.003785	cubic meter (m3)
million gallons per day (MGD)	0.04381	cubic meter per second (m3/s)
part per billion (ppb)	1.00	microgram per liter (mg/L)
pound per square inch (psi)	6.8948	kilopascal (kPa)

GLOSSARY OF ABBREVIATIONS

SEA LEVEL DEFINITION

In this report, "sea level" refers to the National Geodetic Vertical Datum of 1929 (NGVD of 1929)-a geodetic datum derived from a general adjustment of the first-order level net of both the United States and Canada, formerly called "Sea Level Datum of 1929."

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