Back to Toms River, New Jersey page
Table 1. Sources for data and model parameter values
[ATSDR, Agency for Toxic Substances and Disease Registry; EPANET, a water-distribution system model; NJDHSS, New
Jersey Department of Health and Senior Services; SCADA, supervisory control and data acquisition system;
UWTR, United Water Toms River, Inc.]
Data or Model Parameter |
Source for Data or Model Parameter |
Modified During Calibration |
Comment |
Physical Data |
|||
| Network and pipeline geometry | UWTR electronic data files (Flegal, 1997) |
No |
Network pipelines range from 2-16-inches in diameter |
| Test hydrant locations | UWTR; ATSDR | No |
Horizontal and vertical control of hydrants determined by ATSDR staff by use of global positioning system equipment |
Hydraulic and Water-Quality Data |
|||
| Pressure data from test hydrants | ATSDR-supplied pressure data loggers and developed test protocol | No |
1-minute sampling data averaged to hourly values for model simulations |
| Ground-level and elevated storage tank water levels | UWTR SCADA output to data file | No |
5-minute output; value for each hour of test used for model simulations |
| Groundwater well production | UWTR SCADA output to computer screen and total daily pumping data | No |
ATSDR staff recorded well production from screen output during test |
| High service and booster pump flows | UWTR SCADA output to data file | No |
15-minute output; average value over each hour of test used for model simulations |
| Barium data; concentration in groundwater | NJDHSS (NJDHSS, 1999c) |
No |
One-time tap sample at 21 schools on March 28, 1996; point of entry sampled at 4 locations on April 4, 1996 and at 1 location on April 24, 1996; See Figure 8 for details |
Model Data |
|||
| Pipe roughness ("C-Factor") | EPANET Users Manual (Rossman, 1994) | No |
See Table 2 for details |
| Pump-characteristic curves | UWTR data | Yes |
Data obtained in early 1990s |
| System demand factors | UWTR SCADA production data output to computer screen | Yes |
Factors derived from instantaneous production data recorded by ATSDR staff during March and August 1998 tests |
| Nodal demand | UWTR metered consumption data | No |
Quarterly data for October 1997 - April 1998 by meter location; address matched to model node location |