flow monitoring: dollars and...

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1 Flow Monitoring: Flow Monitoring: Dollars and Sensors Dollars and Sensors March 12, 2008 * 1:00 March 12, 2008 * 1:00- 3:00pm EDT 3:00pm EDT Topics Topics Flow monitoring programs Flow monitoring programs Planning and performing the field work Planning and performing the field work Common data issues and QA/QC Common data issues and QA/QC Lessons learned Lessons learned Managing competing priorities Managing competing priorities modeling modeling operations operations consent decree reporting consent decree reporting billing billing

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1

Flow Monitoring: Flow Monitoring: Dollars and SensorsDollars and Sensors

March 12, 2008 * 1:00March 12, 2008 * 1:00--3:00pm EDT3:00pm EDT

TopicsTopics

Flow monitoring programsFlow monitoring programsPlanning and performing the field work Planning and performing the field work Common data issues and QA/QC Common data issues and QA/QC Lessons learned Lessons learned Managing competing priorities Managing competing priorities

modeling modeling operations operations consent decree reporting consent decree reporting billing billing

2

SpeakersSpeakers

Stuart Bowns, Stuart Bowns, HydromaxHydromax USAUSAAbraham Araya, Ph.D., King Abraham Araya, Ph.D., King County/DNRP, Wastewater Treatment County/DNRP, Wastewater Treatment DivisionDivisionSusan E. Moisio, P.E., CH2M HILLSusan E. Moisio, P.E., CH2M HILLModeratorModerator: Jean Vieux, : Jean Vieux, VieuxVieux, Inc., Inc.

Stu BownsStu Bowns

Project Manager, Hydromax USA, Project Manager, Hydromax USA, Florence, KYFlorence, KY

B.S. in Geography from S.U.N.Y. at B.S. in Geography from S.U.N.Y. at BrockportBrockport

First CCTV project in 1972 and first flow First CCTV project in 1972 and first flow monitoring project in 1975monitoring project in 1975

3

Planning the Field WorkPlanning the Field Work

Project Objectives Project Objectives

Site SelectionSite Selection

Site Conditions Site Conditions

History of Technology (open channel)History of Technology (open channel)

Performing the Field WorkPerforming the Field Work

Selection of Equipment Selection of Equipment

InstallationsInstallations

MaintenanceMaintenance

Data RequirementsData Requirements

4

Project Objectives Project Objectives

Used for billing, capacity analysis, Used for billing, capacity analysis, csocso

occurrence, operations, etc.occurrence, operations, etc.

Flow or Occurrence Flow or Occurrence

Short or Long Term (Permanent?)Short or Long Term (Permanent?)

Sampling time Sampling time 5 minute, 15 minute, flow or depth adjusted, 5 minute, 15 minute, flow or depth adjusted, etc.etc.

Uptime and accuracyUptime and accuracy

Data requirementsData requirementsFormatFormat

Monthly, Weekly, Daily, Web basedMonthly, Weekly, Daily, Web based

5

Site SelectionSite Selection

Project ObjectivesProject Objectives

System mapsSystem maps

InIn--house personnel experienced with field house personnel experienced with field

conditionsconditions

Multiple manholes for each selected siteMultiple manholes for each selected site

Attempt to avoid stacking meter sitesAttempt to avoid stacking meter sites

Site ConditionsSite Conditions

6

Perform Field Inspections and DocumentPerform Field Inspections and Document

Field Inspections Need to Identify:Field Inspections Need to Identify:Access Access SafetySafety

7

StructuralStructural

OperationalOperational

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HydraulicsHydraulics

History of TechnologyHistory of TechnologyOpen ChannelOpen Channel

Level only (dipper, bubbler, float)Level only (dipper, bubbler, float)

Differential pressure & ultrasonic levelDifferential pressure & ultrasonic level

ElectroElectro--magnetic velocitymagnetic velocity

Doppler velocityDoppler velocity

Transit time velocityTransit time velocity

9

Range gated Range gated dopplerdoppler velocityvelocity

Radar velocityRadar velocity

Wireless communicationsWireless communications

End user product with web data End user product with web data

presentation & data analysis tools presentation & data analysis tools

??????????????????????

Selection of EquipmentSelection of Equipment

UseUse

Project ObjectivesProject Objectives

Site Selection and ConditionsSite Selection and Conditions

Knowledge of TechnologyKnowledge of Technology

10

Selection of EquipmentSelection of Equipment

UseUse

Project ObjectivesProject Objectives

Site Selection and ConditionsSite Selection and Conditions

Knowledge of TechnologyKnowledge of Technology

Accuracy and repeatability starts with the Accuracy and repeatability starts with the

right meter in the right site right meter in the right site

Low DWF level with maximum surchargesLow DWF level with maximum surcharges

Depth of manhole is factored into any Depth of manhole is factored into any dpdp

or ultrasonic level limitsor ultrasonic level limits

Silt debris changes frequentlySilt debris changes frequently

Multiple Multiple dpdp level sensors set at offsetslevel sensors set at offsets

Foaming on water surfaceFoaming on water surface

DpDp level and level and dopplerdoppler sensor in invertsensor in invert

11

Low levelLow levelLow profile sensorLow profile sensorUltrasonic levelUltrasonic level

Low level with fast velocitiesLow level with fast velocitiesUltrasonic level with radar velocityUltrasonic level with radar velocity

High levelHigh levelRange gated Range gated dopplerdoppler

Very clear flow Very clear flow ElectroElectro--magnetic velocitymagnetic velocity

Frequent rags, solids, grease, hard to accessFrequent rags, solids, grease, hard to accessWireless communication Wireless communication

Constant surchargeConstant surchargeDoppler velocity mounted on crown of pipeDoppler velocity mounted on crown of pipe

CSO occurrence CSO occurrence Ultrasonic levelUltrasonic level

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InstallationsInstallationsDocumentDocument

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MaintenanceMaintenanceDocumentDocument

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FlowFlow Debris Debris DepthDepth Velocity Velocity Depth Depth Flow Flow (in)(in) (FPS) (FPS) (in) (in)

33 22 00 RecordedRecorded3.25 3.25 22 00 11% Low11% Low33 2.252.25 00 13% Low13% Low33 22 0.50.5 8% High8% High

66 22 00 RecordedRecorded6.25 6.25 22 00 4% Low4% Low66 2.252.25 00 11% Low11% Low66 22 0.50.5 3% High3% High

88--inch Lineinch Line

FlowFlow Debris Debris DepthDepth Velocity Velocity Depth Depth Flow Flow (in)(in) (FPS) (FPS) (in) (in)

44 22 00 RecordedRecorded4.25 4.25 22 00 9% Low9% Low44 2.252.25 00 13% Low13% Low44 22 0.50.5 5% High5% High

1616 22 00 RecordedRecorded16.25 16.25 22 00 2% Low2% Low1616 2.252.25 00 13% Low13% Low1616 22 0.50.5 1% High1% High

2222 22 00 RecordedRecorded22.25 22.25 22 00 1% Low1% Low2222 2.252.25 00 9% Low9% Low2222 22 0.50.5 1% High1% High

2424--inch Lineinch Line

17

Data RequirementsData Requirements

911.113.3904/20/07 02:00

891.073.4304/20/07 01:45

901.093.4204/20/07 01:30

931.103.4804/20/07 01:15

1021.183.5204/20/07 01:00

1061.193.6104/20/07 00:45

1131.233.6804/20/07 00:30

1181.243.7804/20/07 00:15

1241.283.8204/20/07 00:00

1261.283.8804/19/07 23:45

1211.243.8504/19/07 23:30

1341.313.9904/19/07 23:15

1391.324.0704/19/07 23:00

1521.424.1204/19/07 22:45

1431.324.1604/19/07 22:30

1431.344.1104/19/07 22:15

1521.384.2004/19/07 22:00

1451.344.1604/19/07 21:45

1481.354.2004/19/07 21:30

1391.294.1404/19/07 21:15

1471.334.2104/19/07 21:00

1401.334.0704/19/07 20:45

1441.324.1704/19/07 20:30

1051.083.8404/19/07 20:15

gpmft/sinUnits

Flow RateVelocityLevelLabel

HUSA06 - 5th Pl. and Sheridan Rd.Site Name

911.113.3904/20/07 02:00

891.073.4304/20/07 01:45

901.093.4204/20/07 01:30

931.103.4804/20/07 01:15

1021.183.5204/20/07 01:00

1061.193.6104/20/07 00:45

1131.233.6804/20/07 00:30

1181.243.7804/20/07 00:15

1241.283.8204/20/07 00:00

1261.283.8804/19/07 23:45

1211.243.8504/19/07 23:30

1341.313.9904/19/07 23:15

1391.324.0704/19/07 23:00

1521.424.1204/19/07 22:45

1431.324.1604/19/07 22:30

1431.344.1104/19/07 22:15

1521.384.2004/19/07 22:00

1451.344.1604/19/07 21:45

1481.354.2004/19/07 21:30

1391.294.1404/19/07 21:15

1471.334.2104/19/07 21:00

1401.334.0704/19/07 20:45

1441.324.1704/19/07 20:30

1051.083.8404/19/07 20:15

gpmft/sinUnits

Flow RateVelocityLevelLabel

HUSA06 - 5th Pl. and Sheridan Rd.Site Name

18

Storm 3

0.000.100.200.300.400.500.600.700.800.901.00

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Storm 2

0.000.100.200.300.400.500.600.700.800.901.00

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19

Questions?Questions?

Abraham Araya, PhD Abraham Araya, PhD

Water Quality Planner, King Water Quality Planner, King County/DNRP, Wastewater Treatment County/DNRP, Wastewater Treatment DivisionDivisionM.Sc. (1987) and PhD (1993) in Geology M.Sc. (1987) and PhD (1993) in Geology from The New Mexico Institute of Mining from The New Mexico Institute of Mining and Technology (NM Tech) in Socorro, and Technology (NM Tech) in Socorro, New Mexico.New Mexico.8 years of Flow Monitoring Experience8 years of Flow Monitoring Experience

20

OverviewOverviewKing County Wastewater Treatment Division (WTD) King County Wastewater Treatment Division (WTD) Facilities.Facilities.

Flow Monitoring Flow Monitoring -- What we need and how we use it.What we need and how we use it.

Flow Monitoring BackgroundFlow Monitoring Background

Lessons LearnedLessons Learned

Flow Monitoring and Data QA/QC Process.Flow Monitoring and Data QA/QC Process.Field work.Field work.Office work.Office work.

FacilitiesFacilitiesTreatment plantsTreatment plants

Two regional, one local, Two regional, one local, two under constructiontwo under construction

CSO facilities: 4CSO facilities: 4Conveyance pipes: 330 milesConveyance pipes: 330 milesPump stations: 42Pump stations: 42Regulator stations: 19Regulator stations: 1935 Local Agencies35 Local AgenciesService Area: 414 Mi2Service Area: 414 Mi2Serves 1.4 millionServes 1.4 millionCombined: 70 Mi2Combined: 70 Mi2

21

Why We Need It & How We Use ItWhy We Need It & How We Use It

Track longTrack long--term trends.term trends.Analyze conveyance system capacity.Analyze conveyance system capacity.Conduct hydraulic modeling and calibration.Conduct hydraulic modeling and calibration.Analyze Inflow/infiltration.Analyze Inflow/infiltration.Calculate CSO volume for NPDES reporting.Calculate CSO volume for NPDES reporting.Plan inspections and schedule maintenance Plan inspections and schedule maintenance and repair activities and repair activities

Flow Monitoring Flow Monitoring -- BackgroundBackground

Pre 2000 Pre 2000 90 to 100 short and long90 to 100 short and long--term (LTM) sitesterm (LTM) sites

2000 2000 –– 2002 KC Regional I/I Control Program2002 KC Regional I/I Control Program775 775 –– 806 mini basins 806 mini basins Average Size: 150 Acres, 22,000 LF of Sewer MainAverage Size: 150 Acres, 22,000 LF of Sewer Main75 Long 75 Long --Term Term

Post 2002Post 200275 to 120 Long Term & 75 to 120 Long Term & ““Short TermShort Term”” Monitoring SitesMonitoring Sites

•• Combined System = 37 (NPDES = 11)Combined System = 37 (NPDES = 11)•• Separated System = 82Separated System = 82•• Telemetry Units = 57Telemetry Units = 57•• Manually collected = 62Manually collected = 62

22

Lessons Learned Lessons Learned Local Agency ParticipationLocal Agency Participation

All Local Agencies Participated in Flow All Local Agencies Participated in Flow MonitoringMonitoring

Provided GIS Information Provided GIS Information

Assisted in Permitting, Access to Local Assisted in Permitting, Access to Local Lines, and traffic ControlLines, and traffic Control

Helped Select, Design, and Implement Helped Select, Design, and Implement Pilot ProjectsPilot Projects

Participated in Pre & PostParticipated in Pre & Post--Project Flow Project Flow MonitoringMonitoring

ContractorContractor

Set Performance Measurement CriteriaSet Performance Measurement CriteriaData Uptime and Flow VerificationData Uptime and Flow Verification

Trained Staff Working With ContractorTrained Staff Working With ContractorQA/QC Data for Consistency and Accuracy QA/QC Data for Consistency and Accuracy

Before Project Completion and the Modeling Before Project Completion and the Modeling PhasePhaseAudit Any Changes Made to Flow DataAudit Any Changes Made to Flow Data

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VendorVendorOne Size Does One Size Does NOT NOT Fit ALL Fit ALL

Research Products and ReferencesResearch Products and References

Training and Product Demonstration Training and Product Demonstration Request Training and Product Demonstration Request Training and Product Demonstration Verify Meter AccuracyVerify Meter AccuracyEvaluate Data Collection and Communication ProtocolsEvaluate Data Collection and Communication ProtocolsEvaluate Software and HardwareEvaluate Software and Hardware

Customer Service / Technical SupportCustomer Service / Technical SupportEase of Access to SupportEase of Access to SupportQuality and Level of SupportQuality and Level of Support

Pre vs. Post 2000 Pre vs. Post 2000 Data IssuesData Issues

-- Proper Site selection & Meter InstallationsProper Site selection & Meter Installations-- Timely MaintenanceTimely Maintenance-- Field Verifications & Onsite Data ReviewField Verifications & Onsite Data Review-- Office Data Review to Identify ProblemsOffice Data Review to Identify Problems

-- Increased UptimeIncreased Uptime-- Increased Data Quality and ReliabilityIncreased Data Quality and Reliability-- Responsiveness to ClientsResponsiveness to Clients-- Timely Delivery of Quality Data Timely Delivery of Quality Data -- Flexibility to Accommodate ClientFlexibility to Accommodate Client’’s Needss Needs

24

Changes ImplementedChanges Implemented

Staffing LevelStaffing Level

Additional Metering TechnologyAdditional Metering Technology

Continuous Staff TrainingContinuous Staff Training

•• Site Inspection and SelectionSite Inspection and Selection•• Monitor InstallationMonitor Installation•• Field Verification of Meter AccuracyField Verification of Meter Accuracy•• Onsite Data Quality Verification and Onsite Data Quality Verification and

TroubleshootingTroubleshooting

Staff Training Staff Training

Meter Installation and VerificationMeter Installation and Verification

25

Meter Installation & VerificationMeter Installation & Verification

Site InvestigationSite Investigation

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Data Quality Verification and Data Quality Verification and TroubleshootingTroubleshooting

Changes ImplementedChanges Implemented

Standard Operating ProceduresStandard Operating Procedures

Site Visit LogsSite Visit Logs

Weekly Meetings With Field & Office Weekly Meetings With Field & Office StaffStaff

27

Flow Monitoring ProcessFlow Monitoring Process

Field workField workSite Investigation.Site Investigation.Equipment Installation.Equipment Installation.Field Verification.Field Verification.Data Collection and Record Keeping.Data Collection and Record Keeping.

Office workOffice workFlow Data Evaluation and Finalization.Flow Data Evaluation and Finalization.Troubleshooting Equipment/Sites.Troubleshooting Equipment/Sites.

Flow Monitoring EquipmentFlow Monitoring Equipment

Area Area –– Velocity meters (devices that measure velocity Velocity meters (devices that measure velocity and depth for flow rate calculation (Q= A x V))and depth for flow rate calculation (Q= A x V))

Meter Type Depth Sensor Velocity SensorI Ultrasonic / Pressure Ultrasonic/ Doppler

Peak II Pressure Transducer Electromagnetic

IIIUltrasonic / Pressure (only during surcharged conditions)

Radar or Electromagnetic sensor (during surcharge)

28

Field Verification of Meter AccuracyField Verification of Meter Accuracy

Depth confirmationDepth confirmation

Velocity ConfirmationVelocity ConfirmationFlows > 2 inches measured using a Flows > 2 inches measured using a portable velocity meter.portable velocity meter.

Low flow (usually < 1 to 2 inches of Low flow (usually < 1 to 2 inches of

DOF) using volumetric Weirs or DOF) using volumetric Weirs or

Propeller Meter.Propeller Meter.

29

Data Collection/TransferData Collection/TransferData collected weekly/biweekly using a laptop computer (and Data collected weekly/biweekly using a laptop computer (and remotely from the office).remotely from the office).Onsite data review (and maintenance).Onsite data review (and maintenance).Daily data back up to king county server (DNRP/WTD).Daily data back up to king county server (DNRP/WTD).Daily update of site visit logs and verification reports.Daily update of site visit logs and verification reports.Notify data analyst.Notify data analyst.

Office Work Office Work Flow Monitoring Data EvaluationFlow Monitoring Data Evaluation

Review Meter Functionality and AccuracyReview Meter Functionality and Accuracy

Perform Diagnostics to Verify Sensor FunctionalityPerform Diagnostics to Verify Sensor Functionality

Compare Meter Readings to Field ReadingsCompare Meter Readings to Field Readings

Review Field Notes and Any Service RecordsReview Field Notes and Any Service Records

Data EditingData Editing

Data FinalizationData FinalizationIl buono, Il brutto, Il cattivoIl buono, Il brutto, Il cattivo

30

Hydrographs and ScattergraphsHydrographs and Scattergraphs

Review Meter Functionality and AccuracyReview Meter Functionality and AccuracyComparison of Depth and Velocity PatternsComparison of Depth and Velocity Patterns

Consistency With site hydraulics (ex. P/S)Consistency With site hydraulics (ex. P/S)

Identify sites that have equipment/installation Identify sites that have equipment/installation problemsproblems

Identify sites with unusual hydraulicsIdentify sites with unusual hydraulics

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WINT003\mp1\RAWVEL WINT003\mp1\UNIDEPTH

Consistency With Site HydraulicsConsistency With Site Hydraulics

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Comparing Meter & Field ReadingsComparing Meter & Field Readings

Skyway Pilot (raw) flow data 10/29/02 to 1/16/03

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Verifying Sensor Functionality and Verifying Sensor Functionality and Data QualityData Quality

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MercerMini\mp1\RAWVEL MercerMini\mp1\UNIDEPTH

Reconstituted velocityFlagged depth

Data EditingData Editing

Depth Drifting & Poor Velocity Data Depth Drifting & Poor Velocity Data (Sediment Problem)(Sediment Problem)

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Poor Velocity DataPoor Velocity Data

Poor Velocity DataPoor Velocity Data

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Data FinalizationData FinalizationRAW DATA• Velocity• Depth

Data Review• Hydrograph Analysis • Scattergraph Analysis• Review Field Notes and Service Logs

FINAL DATA

Data Editing• Flagging Erroneous Data• Reconstructing Velocity Data• Check Data Anomalies

Data Finalization• Verify Pipe Dimension• Verify Silt Level• Calculate Gain or Average Velocity • Depth/Velocity Adjustments• Flow Balancing• Generate Flow Quantities

36

Questions?Questions?

Susan Moisio, PESusan Moisio, PESenior technologist with CH2MSenior technologist with CH2M HILL.HILL.

M.S Civil Engineering Youngstown State M.S Civil Engineering Youngstown State UniversityUniversity

B.S. in Civil Engineering from Arkansas State B.S. in Civil Engineering from Arkansas State UniversityUniversity

21 years of experience in collection system 21 years of experience in collection system engineering, including 16 years with the engineering, including 16 years with the Metropolitan Sewer District of Greater Cincinnati Metropolitan Sewer District of Greater Cincinnati

37

AgendaAgenda

Monitoring programsMonitoring programs

Local Monitoring vs System Wide MonitoringLocal Monitoring vs System Wide Monitoring

Data AnalysisData Analysis

Monitoring ProgramsMonitoring Programs––driven bydriven by

Consent Decrees/Master PlanningConsent Decrees/Master Planning

OperationsOperations

Hydraulic Understanding of SystemHydraulic Understanding of System

39

Consent Decree DrivenConsent Decree Driven

OperationsOperationsSSOsSSOsBasement BackupsBasement BackupsI/I Removal ProgramsI/I Removal ProgramsCredits for DevelopmentCredits for Development

Hydraulic Understanding of SystemHydraulic Understanding of System

Consent Decree DrivenConsent Decree Driven

OperationsOperations

Hydraulic Understanding of SystemHydraulic Understanding of System

Monitoring ProgramsMonitoring Programs

41

Local Monitoring FocusLocal Monitoring FocusIdentified Problem AreasShort Monitoring PeriodDefined Boundary ConditionSolving Localized ProblemsHydraulic Model Development SSOsBasement BackupsDid not focus on pre RDI/I Monitoring

Local Monitoring FocusLocal Monitoring Focus

42

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System Wide MonitoringSystem Wide MonitoringConsent Decree DrivenBoth Sanitary and Combined18” Above Combined12” Above SanitaryBuild Dynamic Hydraulic ModelKeep > 100 Permanent Meters

System Wide MonitoringSystem Wide Monitoring

•3 Major Basins

•300 Monitors

•February through May for 2 years

43

145145 SitesSites

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Mill CreekMill Creek

5454 SitesSites

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Great MiamiGreat Miami

44

101101 SitesSites

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Little MiamiLittle Miami

Monitoring SitesMonitoring Sites

45

System Wide MonitoringSystem Wide Monitoring

•Different Site Conditions

•Safety Concerns

•Access

System Wide MonitoringSystem Wide Monitoring

Large Diameter Combined Sewers

46

Site and Hydraulic ConditionsSite and Hydraulic Conditions

Main Interceptors Into Mill Creek WWTP

•Surcharged during installation

•Surcharged during maintenance

47

System Wide Monitoring System Wide Monitoring –– SSO 700 metering SSO 700 metering before and after monitoring programbefore and after monitoring program

Data AnalysisData Analysis

49

Bubble Bubble DiagramDiagram•Relationship between meters

•Sets up project understanding

•Understand how flows are entering and leaving the system

•Field Inspection

N

0.004

0.004

1.127

1.127

0.0400.040

4.843

2.630

1.025

1.0421.025

1.908 1.621

1.908 2.646

0.031 1.641

1.610 -5.901

0.278 0.471

0.278 0.471

0.280 0.521

0.280 0.241

0.0000.000

0.241

0.000 0.241

0.000

LEGEND

Cumulative Flow DRY WEATHER FLOW FLOW METERIncremental Flow WET WEATHER FLOW

LBLFB009

BR

IS

0.031

GOSM001S048-045

GOSM016S034-252

GOSM015S024-284

GOSM013S050-400

GOSM014S033-839

GOSM010S034-049

GOSM011S034-048

GOSM017S024-092

GOSM009S034-063

GOSM005S025-063

GOSM006S035-104

GOSM004S025-194

GOSM002S024-109

GOSM012S034-188

GOSM008S035-166

GOSM003S024-037

GOSM007S034-342

Bubble Bubble DiagramDiagram

N 21.5685%

3.805

25.4 15%25.37

2.53740%

6.341.332 6.3421%

39% 2.4740.36421% 1.73

0.034 1.50% 1.73 0.67639%

21% 0.0000.056 12.685

2.24 2.50% 25.37 50%0.694 40% 2.24 18.08

0.2241.928 10%86% 0.000

0.000 39%40%

0.00-1.06

5% 1.0620.000100%

0.82 21.240.82 21.24

95%0.817 20.176 0.00100% -2.53

1.32810%

13.28-7.72 0.838

9%11.949

90%0.135 0.279

1.35 10% 9.31 3%1.35 9.31

1.219 8.006 86%90%

0.1865.158 2%

12.69-14.62 0.971

100% 3.6780.97

0.9712.688100%

5%

0.850.85

0.852

4.838 95%12.685

1.730

LEGEND

DRY WEATHER FLOW FLOW METER Cumulative FlowWET WEATHER FLOW Incremental Flow

5.09

3.683.42

5.09

32.978

LBLFB008

LBLFB009

BR

IS

0.255

GOSM001S048-045

GOSM016S034-252

GOSM015S024-284

GOSM013S050-400

GOSM014S033-839

GOSM010S034-049

GOSM011S034-048

GOSM017S024-092

GOSM009S034-063

GOSM005S025-063

GOSM006S035-104

GOSM004S025-194

GOSM002S024-109

GOSM012S034-188

GOSM008S035-166

GOSM003S024-037

GOSM007S034-342

TO LBLFB009

TO GOSM006

How does the flow REALLY go?

50

Data AnalysisData AnalysisADDF and InfiltrationADDF and Infiltration

0.000

0.200

0.400

0.600

0.800

1.000

1.200

1.400

1.600

1.800

2.000

00:00 01:00 02:00 03:00 04:00 05:00 06:00 07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00

Time of Day (hours)

Flow

(MG

D)

DW/HG DW/LG

Data AnalysisData AnalysisKC Metro Rainfall Data (Dr. McEnroe's Report)

Rainfall History

0.01

0.10

1.00

10.00

10 100 1000

Duration (minutes)

Rai

nfal

l Int

ensi

ty (i

n/hr

)

0.25

0.5

1

2

5

10

25

50

100

51

Wet Weather Wet Weather Inflow Coefficients

Flow Projections

Volume Projections

3 Mo

6 Mo

1 Yr

5 Yr

10 Yr

25 Yr

0.20

5.20

10.20

15.20

20.20

25.20

0.00 0.50 1.00 1.50 2.00 2.50

Rainfall Intensity, in/hr

Inflo

w, m

gd

Capacity Projected Inflow Inflow Peak Flow 3 Mo6 Mo 1 Yr 5 Yr 10 Yr 25 Yr

Data AnalysisData Analysis

0

5

10

15

20

25

0 12 24 36 48

Time, hrs

Flow

Rat

e, m

gd

CapacityPeak Flow

52

Flow Comparison at Meter MC-WB-46TMarch 4,2001 vs. June 6, 2001

0.0

2.0

4.0

6.0

8.0

10.0

12.0

14.0

16.0

18.0

0:00

1:00

2:00

3:00

4:00

5:00

6:00

7:00

8:00

9:00

10:0

0

11:0

0

12:0

0

13:0

0

14:0

0

15:0

0

16:0

0

17:0

0

18:0

0

19:0

0

20:0

0

21:0

0

22:0

0

23:0

0

0:00

Time (hrs)

Flow

(mgd

)0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

Rain (in/15 m

in)

Rainfall date: June 6, 2001 Rainfall volume = 0.36 inPeak intensity = 0.72 in/hrDuration = 0.50 hrRainfall in previous 7 days = 1.24 in

Rainfall date: March 4, 2001 Rainfall volume = 0.36 inPeak intensity = 0.16 in/hrDuration = 2.83 hrRainfall in previous 7 days = 0.00 in

June 6, 2001

March 4, 2001

Data AnalysisData Analysis

ConclusionsConclusions

Purpose of monitoring programUse of the dataLength of the monitoring periodLong term data needs

54

Q & A SessionQ & A Session

Stuart Bowns, Stuart Bowns, HydromaxHydromax USAUSAAbraham Araya, Ph.D., King Abraham Araya, Ph.D., King County/DNRP, Wastewater Treatment County/DNRP, Wastewater Treatment DivisionDivisionSusan E. Moisio, P.E., CH2M HILLSusan E. Moisio, P.E., CH2M HILLModeratorModerator: Jean : Jean VieuxVieux, , VieuxVieux, Inc., Inc.

Thank YouThank YouOur Distinguished Presenters Our Distinguished Presenters

WEF AND WEF Collections Systems CommitteeWEF AND WEF Collections Systems CommitteeTina Wolff, Malcolm PirnieTina Wolff, Malcolm PirnieRenee Kayal, WEFRenee Kayal, WEFChristine Handog, WEFChristine Handog, WEF

Site coordinatorsSite coordinators

AttendeesAttendees

See your site coordinator for Professional Development Hours (See your site coordinator for Professional Development Hours (PDHsPDHs).).

The next Collection Systems Committee sponsored webcast is on The next Collection Systems Committee sponsored webcast is on August 13, 2008, focusing on August 13, 2008, focusing on CMOMCMOM’’ss ReRe’’sewersewer”” reaction.reaction.

For more info on the WEFCSC and activities, please go to For more info on the WEFCSC and activities, please go to www.wef.orgwww.wef.org

55