HomeMy WebLinkAbout; Recycled Water Master Plan 2012 Appendix F; Recycled Water Master Plan 2012 Appendix F; 2012-01-12
January 2012 F-1 pw://Carollo/Documents/Client/CA/Carlsbad/8308A00/Deliverables/Draft Report/Appendicies/Appendix A.doc
Appendix F
MODEL CALIBRATION DATA
This appendix includes:
• Calibration Field Testing Plan
• Calibration Data
• Model Calibration Results
o Reservoirs
o Pump Stations
o Metering Station
o Temporary Pressure Loggers
March 24, 2010 - DRAFT D-1
pw://Carollo/Documents/Client/CA/Carlsbad/8308A00/Deliverables/Draft Report/Appendicies/Appendix A.doc
Appendix D
CALIBRATION PLAN
City of Carlsbad
RECYCLED WATER MASTER PLAN UPDATE
MODEL CALIBRATION PLAN
FINAL
September 2009
199 SOUTH LOS ROBLES AVENUE • SUITE 530 • PASADENA, CALIFORNIA 91101 • (626) 535-0180 • FAX (626) 535-0185Calibration Plan.doc
City of Carlsbad
RECYCLED WATER MASTER PLAN UPDATE
MODEL CALIBRATION PLAN
TABLE OF CONTENTS
Page No.
1.0 OVERVIEW................................................................................................................1
1.1 Schedule........................................................................................................ 1
2.0 EXTENDED PERIOD CALIBRATION........................................................................2
2.1 Overview of Extended Period Calibration Process........................................ 2
2.2 Data Required for Extended Period Calibration............................................. 2
2.3 Format of Data............................................................................................... 4
2.4 Required Equipment / Staff.......................................................................... 18
2.5 Models and Intermediate Readings............................................................. 19
3.0 WATER QUALITY CALIBRATION...........................................................................19
3.1 Overview of the Water Quality Calibration Process..................................... 19
LIST OF TABLES
Table 1 Calibration Data Gathering and Testing Schedule........................................... 1
Table 2 EPS Calibration Data Gathering Parameters................................................... 2
Table 2 EPS Calibration Data Gathering Parameters (Continued)............................... 3
Table 3 Sample SCADA Data Format .......................................................................... 4
LIST OF FIGURES
Figure 1 Overview Map of Pressure Logger and Water Quality Sampling Locations .... 6
Figure 1a Temporary Pressure Logger and Water Quality Sampling Locations.............. 7
Figure 1b Temporary Pressure Logger and Water Quality Sampling Locations.............. 8
Figure 1c Temporary Pressure Logger and Water Quality Sampling Locations.............. 9
Figure 1d Temporary Pressure Logger and Water Quality Sampling Locations............ 10
Figure 1e Temporary Pressure Logger and Water Quality Sampling Locations............ 11
Figure 1f Temporary Pressure Logger and Water Quality Sampling Locations............ 12
Figure 1g Temporary Pressure Logger and Water Quality Sampling Locations............ 13
Figure 1h Temporary Pressure Logger and Water Quality Sampling Locations............ 14
Figure 1i Temporary Pressure Logger and Water Quality Sampling Locations............ 15
Figure 1j Temporary Pressure Logger and Water Quality Sampling Locations............ 16
Figure 1k Temporary Pressure Logger and Water Quality Sampling Locations............ 17
September 30, 2009
Calibration Plan.doc
RECYCLED WATER MASTER PLAN UPDATE
MODEL CALIBRATION PLAN
1.0 OVERVIEW
This calibration plan covers each of the calibration processes, specifically focusing on data
gathering needs to ensure an accurate and complete calibration.
1.1 Schedule
Field testing and data gathering for the spring model calibration will tentatively take place
during the first week of October, from the 5th through the 11th. Table 1 presents a
preliminary schedule of this week, detailing on which days each data gathering element of
the calibration will take place. This will allow our team to start the model calibration as soon
as possible following the week of calibration data gathering.
Table 1 Calibration Data Gathering and Testing Schedule
Recycled Water Master Plan Update
City of Carlsbad
Sunday
September
27
Monday
September
28
Tuesday
September
29
Wednesday
September
30
Thursday
October 1
Friday
October 2
Finalize PLs
Locations
Saturday
October 3
Sunday
October 4
Monday
October 5
Install
PLs
Tuesday
October 6
PL Start
Recording
Wednesday
October 7
EPS Data
Gathering
Thursday
October 8
EPS
WQ
Sampling
Friday
October 9
EPS Data
Gathering
Saturday
October 10
EPS Data
Gathering
Sunday
October 11
EPS Data
Gathering
Monday
October 12
Remove
PLs
Tuesday
October 13
Provide
SCADA to
our team
Wednesday
October 14
Thursday
October 15
Friday
October 16
Saturday
October 17
Abbreviations: EPS: Extended Period Simulation; PLs: Pressure Loggers; WQ: Water Quality.
The remainder of this plan details the data required for each calibration and testing
procedures for each portion of the calibration test.
September 30, 2009 1
Calibration Plan.doc
2.0 EXTENDED PERIOD CALIBRATION
2.1 Overview of Extended Period Calibration Process
The extended period calibration is intended to calibrate the extended period simulation
(EPS) capabilities of the hydraulic model by closely matching the model pressures, flows,
and tank levels to field conditions over a 24 hour period of similar demand and system
boundary conditions. Pressure data, tank levels, and flows from the water reclamation
plants, booster stations, and the pressure reducing stations will be recorded for a full week
in order to create diurnal patterns and obtain EPS calibration data. The primary varied
parameters for this calibration will be operational controls and pipeline roughness
coefficients; although other parameters may also be adjusted as calibration results are
generated.
2.2 Data Required for Extended Period Calibration
The calibration data required for the extended period calibration consists of records of
system pressures, tank levels, and flows from the water reclamation plants, booster
stations, and the pressure reducing stations throughout the distribution system. These
system pressures will be gathered both by the City’s existing sensor network and by
temporary pressure loggers, which will be attached by plumbing into existing air release
valves (ARV) and meters throughout the distribution system. Additional data, including
system controls and operational details, will be required to establish boundary conditions for
the model. This data will be gathered over the course of the week (See Table 1 for the
complete calibration schedule).
A target system interval of 15 minutes will be used for data gathering. If any facilities listed
lack the capabilities for 15 minute interval data gathering (e.g., they use circular charts or
flow totalizers), assumptions will be necessary to interpolate data for the calibration.
The calibration data required for EPS calibration is listed by site in Table 2 and is shown
geospatially on Figure 1. Figure 1 also shows the location of the temporary pressure
loggers, along with each facility of the recycled water distribution system for which data is
required. Following Figure 1 is a series of zoomed in locations, Figures 1a through 1k.
Table 2 EPS Calibration Data Gathering Parameters
Recycled Water Master Plan Update
City of Carlsbad
Facility Name Measurement Unit Interval Source
Reservoirs
D-1 Tank level ft 15 min SCADA
D-2 Tank level ft 15 min SCADA
C Tank level ft 15 min SCADA
Mahr Reservoir level ft 15 min SCADA
September 30, 2009 2
Calibration Plan.doc
Table 2 EPS Calibration Data Gathering Parameters (Continued)
Recycled Water Master Plan Update
City of Carlsbad
Facility Name Measurement Unit Interval Source
Pressure Reducing Stations
Faraday PRV Percent Open % 15 min SCADA
suction pressure psi 15 min SCADA
discharge pressure psi 15 min SCADA
Corinthia MOV flow gpm 15 min SCADA
suction pressure psi 15 min SCADA
discharge pressure psi 15 min SCADA
Avenida Encinas PRV Percent Open % 15 min SCADA
suction pressure psi 15 min SCADA
discharge pressure psi 15 min SCADA
La Costa PRV Percent Open % 15 min SCADA
suction pressure psi 15 min SCADA
discharge pressure psi 15 min SCADA
Twin D PRV Percent Open % 15 min SCADA
suction pressure psi 15 min SCADA
discharge pressure psi 15 min SCADA
Dump Valve Percent Open % 15 min SCADA
(to Reclaimed Water Basins) suction pressure psi 15 min SCADA
discharge pressure psi 15 min SCADA
Booster Stations
Bressi Pump Station flow gpm 15 min SCADA
discharge pressure psi 15 min SCADA
Twin D Pump Station flow gpm 15 min SCADA
discharge pressure psi 15 min SCADA
Calavara Pump Station flow gpm 15 min SCADA
discharge pressure psi 15 min SCADA
Encina Pump Station flow gpm 15 min SCADA
discharge pressure psi 15 min SCADA
Pressure Loggers
EPS-1 – Figure 1a pressure psi 15 min PL
EPS-2 – Figure 1b pressure psi 15 min PL
EPS-3 – Figure 1c pressure psi 15 min PL
EPS-4 – Figure 1d pressure psi 15 min PL
EPS-5 – Figure 1e pressure psi 15 min PL
EPS-6 – Figure 1f pressure psi 15 min PL
EPS-7 – Figure 1e pressure psi 15 min PL
EPS-8 – Figure 1g pressure psi 15 min PL
EPS-9 – Figure 1h pressure psi 15 min PL
EPS-10 – Figure 1i pressure psi 15 min PL
EPS-11 – Figure 1j pressure psi 15 min PL
EPS-12 – Figure 1i pressure psi 15 min PL
EPS-13 – Figure 1h pressure psi 15 min PL
EPS-14 – Figure 1k pressure psi 15 min PL
EPS-15 – Figure 1e pressure psi 15 min PL
Connections (System Inflows)
Vallecitos Water District’s
Meadowlark WRF
flow
discharge pressure
gpm
psi
15 min
15 min
SCADA
SCADA
September 30, 2009 3
Calibration Plan.doc
Table 2 EPS Calibration Data Gathering Parameters (Continued)
Recycled Water Master Plan Update
City of Carlsbad
Facility Name Measurement Unit Interval Source
Leucadia County Water District’s
Gafner WWTP2
flow
discharge pressure
gpm
psi
15 min
15 min
SCADA
SCADA
Twin D Potable PRV1 flow gpm 15 min SCADA
suction pressure psi 15 min SCADA
discharge pressure psi 15 min SCADA
Connections (System Outflows)
Olivenhain MWD
flow
suction pressure
gpm
psi
15 min
15 min
SCADA
SCADA
Notes:
1) Supplemental potable water is introduced to the recycled water system when the D Tanks reach
a low water level. Supplied to system at this location which is an 8-inch diameter combination
pressure reducing and sustaining valve.
2) The Gafner WWTP currently supplies recycled water only to the south golf course of the La
Costa Spa and Resort. The main water system is supplied entirely from Meadowlark WRF.
Abbreviations: CC = Circular Chart; FT = Flow Totalizer; PL = Pressure Logger; PRS = Pressure
Reducing Station.
2.3 Format of Data
2.3.1 SCADA Data
All SCADA data needs to be provided in MS Excel or a MS database format. The number of
data points for each facility is estimated to be slightly over 2000 points for each of the 39
SCADA data fields requested. Table 3 presents an acceptable sample format for the
SCADA data.
Table 3 Sample SCADA Data Format
Recycled Water Master Plan Update
City of Carlsbad
TANK3_LEVEL TANK2_LEVEL RWC1_PRESSURLZ PS9_PRESSUR_SUCT
time ft time ft time psi time gpm
2/1/09 1:05 27.61 2/1/09 1:04:54 25.73 2/1/09 1:03:49 44.53 2/1/09 1:03:17 120.59
2/1/09 1:20 27.52 2/1/09 1:20:22 25.54 2/1/09 1:21:45 44.65 2/1/09 1:21:55 117.05
2/1/09 1:35 27.35 2/1/09 1:34:27 25.39 2/1/09 1:33:25 44.20 2/1/09 1:32:35 119.63
2/1/09 1:50 25.12 2/1/09 1:50:39 25.29 2/1/09 1:51:53 45.34 2/1/09 1:52:21 119.42
2/1/09 2:05 25.59 2/1/09 2:04:05 25.13 2/1/09 2:03:23 45.13 2/1/09 2:02:24 115.52
2/1/09 2:20 25.60 2/1/09 2:20:29 27.56 2/1/09 2:21:20 45.26 2/1/09 2:22:13 117.21
2/1/09 2:35 25.55 2/1/09 2:34:27 27.60 2/1/09 2:33:29 44.59 2/1/09 2:32:52 117.29
2/1/09 2:50 27.96 2/1/09 2:50:09 27.90 2/1/09 2:50:46 45.01 2/1/09 2:51:00 117.05
2/1/09 2:05 25.76 2/1/09 2:04:04 27.67 2/1/09 2:03:12 45.75 2/1/09 2:02:55 116.55
2/1/09 2:20 25.41 2/1/09 2:20:17 26.51 2/1/09 2:21:53 44.22 2/1/09 2:22:02 116.91
2/1/09 2:35 25.56 2/1/09 2:34:45 27.31 2/1/09 2:33:56 44.42 2/1/09 2:33:03 115.15
2/1/09 2:50 25.06 2/1/09 2:50:02 26.96 2/1/09 2:50:35 45.04 2/1/09 2:51:26 119.02
September 30, 2009 4
Calibration Plan.doc
Table 3 Sample SCADA Data Format
Recycled Water Master Plan Update
City of Carlsbad
2/1/09 3:05 25.11 2/1/09 3:04:24 27.00 2/1/09 3:04:13 44.17 2/1/09 3:03:25 120.00
Notes:
This sample was taken from a different SCADA system and thus may not represent the exact format of the
City’s SCADA output.
September 30, 2009 5
Calibration Plan.doc
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Pipelines by Pressure Zone255318
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Figure 1eTemporary Pressure Logger and Water Quality Sampling LocationsDraft Calibration PlanCity of Carlsbad
O
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Figure 1fTemporary Pressure Logger and Water Quality Sampling LocationsDraft Calibration PlanCity of Carlsbad
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Figure 1hTemporary Pressure Logger and Water Quality Sampling LocationsDraft Calibration PlanCity of Carlsbad
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Figure 1iTemporary Pressure Logger and Water Quality Sampling LocationsDraft Calibration PlanCity of Carlsbad
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Figure 1jTemporary Pressure Logger and Water Quality Sampling LocationsDraft Calibration PlanCity of Carlsbad
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Figure 1kTemporary Pressure Logger and Water Quality Sampling LocationsDraft Calibration PlanCity of Carlsbad
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0 500 1,000
Feet
Depending on the interval of data available and record keeping capabilities of the SCADA
system, modifications may need to be made to the SCADA system prior to the calibration
week (and impacting the schedule). It would be preferable to our team to obtain SCADA
data on 5-minute intervals. However, hourly intervals would be sufficient if 5-minute
intervals are not possible. If possible, the time of each data point should be included in the
output report, especially if the SCADA data is queried from each facility independently.
2.3.2 Circular Charts
If required, our team will digitize any circular charts in hourly intervals for the data point that
are not available on SCADA and listed in Table 2. The City should provide color copies of
any circular charts for facility parameters requested. If the facility is offline for the duration of
the entire EPS data-gathering period, there is no need to provide circular charts for that
facility. If the City uses circle charts, the accuracy of these data points will be limited in
comparison to SCADA data.
2.3.3 Manual Facilities
For any manually operated facilities listed in Table 2, an operational log should be
substituted for the requested facility parameters. It is assumed that flow totalizers are used
to take daily readings of the amount of recycled water pumped during each 24-hour period.
For any manually operated pump used during the extended period calibration week, the
hours that the pump is on or off, along with the flow rate during each operation period will
be needed. Photocopies of the log sheets for these pumps would be sufficient. If the City
finds it more convenient, a handwritten or electronic log of all sites would also be sufficient.
2.3.4 Temporary Pressure Loggers
Discussions with the City have indicated that locations to attach temporary pressure loggers
are limited. City staff indicated that it will provide all 15 pressure loggers and that all the
temporary pressure loggers can be plumbed onto air vacuum relief valves. Our team has
indicated general locations for the 15 pressure loggers on Figure 1, with additional zoomed
in detail shown in Figures 1a through 1k. City staff will install near these locations as local
meters and appurtenances allow.
2.4 Required Equipment / Staff
2.4.1 Required Staff (City)
This task will require City employees to place all of the pressure loggers in the field on the
initial day of testing (tentatively October 5th).
City staff shall be responsible for installation/removal of data loggers on hydrants, driving
City vehicles or any other function involving City property.
September 30, 2009 18
Calibration Plan.doc
2.4.2 Required Equipment (City)
• 15 pressure loggers – Dickson PR300
• appropriate wrenches and equipment to place loggers at each location
2.4.3 Required Equipment (Carollo/CH2M Hill)
• Maps of field locations for pressure loggers
2.5 Models and Intermediate Readings
The sampling interval for all pressure loggers should be set to 5 minutes. Each pressure
logger will require approximately 2,016 data points (12 data points per hour over 7 days).
The pressure loggers are Dickson brand pressure loggers model PR300 marked CE2
through CE6. The internal capacity of these meters is limited to 7,936 data points, which is
sufficient to record one week of data in 5-minute intervals.
3.0 WATER QUALITY CALIBRATION
The water quality calibration is intended to calibrate the water quality capabilities of the
hydraulic model by matching its predicted chlorine residuals to laboratory tested chlorine
residuals taken from sampling sites in the distribution system.
3.1 Overview of the Water Quality Calibration Process
The primary varied parameters for this calibration will be the wall and bulk reaction
coefficients, although other parameters may also be adjusted as calibration results are
generated. It should be noted that the calibration of Chlorine residuals in the City’s
distribution system will involve more engineering judgment and assumptions than the
hydraulic calibration and that the results obtained from this process are subject to
interpretation.
The key challenge is the fact that the chlorine samples are collected during the day, each
representing different hydraulic conditions, while the results are typically compared as an
instantaneous set of values. With only one sample at each location per day, the range in
chlorine level at each location is not captured.
Also, the model will be unable to adequately model the hydraulics of mixing within the
reservoirs. A computational fluid dynamic (CFD) model would need to be created for each
reservoir in order to accurately determine how water quality changes within each reservoir.
However, CFD modeling is complex and time consuming, and is not a part of this project.
Due to these and other unknown conditions, the water quality calibration results are
typically not as accurate as hydraulic calibration, and the model results are therefore
subject to interpretation. The proposed water quality calibration process consists of the
following steps:
September 30, 2009 19
Calibration Plan.doc
1. Chlorine Sampling
2. Establish Boundary Conditions
3. Water Quality Calibration
3.1.1 Step 1 - Chlorine Sampling
The proposed sampling sites for the calibration will consist of sampling sites throughout the
distribution system and the water reclamation facilities, as presented on Figure 1 and
shown in detail in Figures 1a through 1k. These sites are selected such that there is a good
coverage of the entire distribution system and are located in close proximity to the proposed
pressure logger locations to expedite field work. The exact locations of pressure recorders
and water quality sampling may need to be adjusted slightly based on field conditions. Any
sampling program that the City already follows could be incorporated into the water quality
calibration data gathering. It is highly desired to conduct the water quality calibration in the
same week as the EPS data gathering to record the hydraulic boundary conditions.
If both chlorine and chloromines are used, the water quality reports for each sampling site
need to include both free and total chlorine residual. To get an idea of the range of chlorine
levels during the day, it is requested that the City multiple samples throughout the day at
each sampling location.
City operations staff have indicated they have the capabilities for analyzing chlorine
residuals during sampling. Hence, no laboratory evaluation of chlorine residual will be
required.
The chlorine decay factor for the system will need to be determined by taking samples near
the supply sources and analyzing the sample over several days until the residual reaches
zero. City staff have indicated that the chlorine residual discharged from the Meadowlark
WRF is near zero already, so sampling will not provide decay curve results.
The sampling locations for jar tests are indicated on Figure 1 (near Carlsbad WRF pump
station and the distribution system nearby). Samples should be taken at each location and
analyzed daily (recording time and residual level) until the residual reaches zero.
3.1.2 Step 2 - Establish Boundary Conditions
To establish boundary conditions for the water quality model, the chlorination dosage at
each point of entry into the distribution system will need to be input into the hydraulic model.
The boundary conditions include:
o Chlorine concentrations in all reservoirs.
o Chlorine dosage at all wells and other dosing locations.
September 30, 2009 20
Calibration Plan.doc
September 30, 2009 21
Calibration Plan.doc
o Chlorine concentrations in the water provided through each water reclamation
facility.
The sampled residual for each reservoir will be used as an initial condition within the model
for each reservoir. An extended simulation will be used to check that the operational
controls for the reservoir within the model maintain residual levels.
3.1.3 Step 3 - Water Quality Calibration
Calibration will be conducted by comparing the actual chlorine residual levels recorded at
the sampling sites to the predicted values in the hydraulic model. First, the boundary
conditions, such as initial concentrations and dosages will be input. Then, the free chlorine
levels are calibrated by making model adjustments. Possible adjustments to the model
include initial concentrations in the distribution system and/or reservoir operational controls
and retention times, wall and bulk reaction coefficients in pipelines, and expanded
investigation into any areas of influence of chloramines/chlorine interaction (if applicable).
6080100120140160Pressure (psi)Pressure Logger DataPL1PL3PLXXPLE8PLE70204010/13 10/14 10/15 10/16 10/17 10/18 10/19 10/20 10/21Pressure (psi)Time
6080100120140160Pressure (psi)0204010/13 10/14 10/15 10/16 10/17 10/18 10/19 10/20 10/21Pressure (psi)TimePLE4PLXPLE6PLE5PLE2
6080100120140160Pressure (psi)Pressure Logger Data0204010/13 10/14 10/15 10/16 10/17 10/18 10/19 10/20 10/21Pressure (psi)TimePLE1PL21PL17PL12
35Reservoirs302025Level (ft)15Level (ft)51001 3 5 7 9 11 13 15 17 19 21 23 25Time
150020002500300035004000Flow (gpm)Pump Stations050010001 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25TimeEncina/Carlsbad-SCADATwin "D"Bressi-SCADACalavera-SCADAEncina/Carlsbad-ModelTwin "D"-ModelBressi-ModelCalavera-Model
2000250030003500400045005000Flow (gpm)FCV0500100015001 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25TimeCorinthia-SCADACorinthia-Model
6080100120Pressure (psi)Measured Pressure, psiModeled Pressure, psi02040Pressure (psi)Date - TimeFigure XXPressure Logger 1 (PL1)EPS Calibration PlotRecycled Water Master PlanCarlsbad Water District
80100120140Pressure (psi)Measured Pressure, psiModeled Pressure, psi0204060Pressure (psi)Date - TimeFigure XXPressure Logger 3 (PL3)EPS Calibration PlotRecycled Water Master PlanCarlsbad Water District
80100120140160Pressure (psi)Measured Pressure, psiModeled Pressure, psi0204060Pressure (psi)Date - TimeFigure XXPressure Logger 12 (PL12)EPS Calibration PlotRecycled Water Master PlanCarlsbad Water District
80100120140Pressure (psi)Measured Pressure, psiModeled Pressure, psi0204060Pressure (psi)Date - TimeFigure XXPressure Logger 17 (PL17)EPS Calibration PlotRecycled Water Master PlanCarlsbad Water District
80100120140160Pressure (psi)Measured Pressure, psiModeled Pressure, psi0204060Pressure (psi)Date - TimeFigure XXPressure Logger 21 (PL21)EPS Calibration PlotRecycled Water Master PlanCarlsbad Water District
6080100120Pressure (psi)Measured Pressure, psiModeled Pressure, psi02040Pressure (psi)Date - TimeFigure XXPressure Logger E1 (PLE1)EPS Calibration PlotRecycled Water Master PlanCarlsbad Water District
40506070Pressure (psi)Measured Pressure, psiModeled Pressure, psi0102030Pressure (psi)Date - TimeFigure XXPressure Logger E2 (PLE2)EPS Calibration PlotRecycled Water Master PlanCarlsbad Water District
80100120140160Pressure (psi)Measured Pressure, psiModeled Pressure, psi0204060Pressure (psi)Date - TimeFigure XXPressure Logger E4 (PLE4)EPS Calibration PlotRecycled Water Master PlanCarlsbad Water District
80100120140Pressure (psi)Measured Pressure, psiModeled Pressure, psi0204060Pressure (psi)Date - TimeFigure XXPressure Logger E5 (PLE5)EPS Calibration PlotRecycled Water Master PlanCarlsbad Water District
6080100120Pressure (psi)Measured Pressure, psiModeled Pressure, psi02040Pressure (psi)Date - TimeFigure XXPressure Logger E6 (PLE6)EPS Calibration PlotRecycled Water Master PlanCarlsbad Water District
30405060Pressure (psi)Measured Pressure, psiModeled Pressure, psi01020Pressure (psi)Date - TimeFigure XXPressure Logger E7 (PLE7)EPS Calibration PlotRecycled Water Master PlanCarlsbad Water District
80100120140Pressure (psi)Modeled Pressure, psiMeasured Pressure, psi0204060Pressure (psi)Date - TimeFigure XXPressure Logger E8 (PLE8)EPS Calibration PlotRecycled Water Master PlanCarlsbad Water District
95100105Pressure (psi)Measured Pressure, psiModeled Pressure, psi808590Pressure (psi)Date - TimeFigure XXPressure Logger X (PLX)EPS Calibration PlotRecycled Water Master PlanCarlsbad Water District
80100120140160180Pressure (psi)Modeled Pressure, psiMeasured Pressure, psi020406080Pressure (psi)Date - TimeFigure XXPressure Logger XX (PLXX)EPS Calibration PlotRecycled Water Master PlanCarlsbad Water District