Overview of Requirements for Groundwater Systems...Getting Started •Cover letter with engineering...
Transcript of Overview of Requirements for Groundwater Systems...Getting Started •Cover letter with engineering...
Overview of Requirements for Groundwater Systems
Presented By: Elston Johnson
Overview
• Getting Starting
• Monitoring Requirements
• Operational Requirements
• Other Requirements
Getting Started
• Approval Required
• Plans and Specifications
• Waterlines
• Wells
• Tanks
• Chemical treatment systems
• Pumps
Getting Started
• Cover letter with engineering report
• Submittal form
• TCEQ Core Data Form (for new systems)
• Sealed engineering plans and specifications
• Well completion data
Getting Started
• Requirements on our website
• http://www.tceq.texas.gov/drinkingwater/newsystems.html
• Checklist for Proposed Public Water System
• Contact Staff on Utilities Technical Review Team
Construction of PWS Wells
● 18 inch casing
● Sealing Block
● Sealed Well Head
● Screened Vents
● Sampling Tap
● Flow Meter
● Fenced or Housed
● All Weather Road
● Air Release Device
Sanitary Conditions of PWS Wells
● Protection from Flooding
● >50 feet: Livestock, Septic Tanks, Cemeteries, Sewers
● > 150 feet: Septic Tank Drainage Fields, UST, liquid pipeline
● >300 feet: Industrial Waste Drainage Ditch, Lift Stations
● > 500 feet: Sewage Treatment Plant, Landfill, Sewage Irrigated land, BFU Sites, Solid Waste Site
Monitoring
• Federal and State requirements
• Basis for the Federal Drinking Water Program
• Measures the amount of contaminants in water
Monitoring
• Bacteriological Monitoring
• Chemical Monitoring
Monitoring
• Bacterial Monitoring
• Total Coliform
• All systems
• Monthly Requirement
• Based on Population
Minimum Number of Samples Population Served per Month 1 to 1,000 . . . . . . . . . . . . . . . . . . . . . . 1 1,001 to 2,500 . . . . . . . . . . . . . . . . . . 2 2,501 to 3,300 . . . . . . . . . . . . . . . . . . 3 3,301 to 4,100 . . . . . . . . . . . . . . . . . . 4 4,101 to 4,900 . . . . . . . . . . . . . . . . . . 5 4,901 to 5,800 . . . . . . . . . . . . . . . . . . 6 5,801 to 6,700 . . . . . . . . . . . . . . . . . . 7 6,701 to 7,600 . . . . . . . . . . . . . . . . . . 8 7,601 to 8,500 . . . . . . . . . . . . . . . . . . 9 8,501 to 12,900 . . . . . . . . . . . . . . . . 10 12,901 to 17,200 . . . . . . . . . . . . . . . 15 17,201 to 21,500 . . . . . . . . . . . . . . . 20 21,501 to 25,000 . . . . . . . . . . . . . . . 25 25,001 to 33,000 . . . . . . . . . . . . . . . 30 33,001 to 41,000 . . . . . . . . . . . . . . . 40 41,001 to 50,000 . . . . . . . . . . . . . . . 50
Monitoring
• Bacterial Monitoring
• Groundwater Rule
• Requires Well Monitoring
• Required if Positive Total Coliform in distribution system
Monitoring
• Bacterial Monitoring
• Groundwater Rule
• Triggered source sampling
• Corrective actions
• 4-Log viral treatment
• Triggered Source Monitoring Plans
• System A collects 3 TC positive routine distribution samples
G4440001B
G4440001C
G4440001A
Well not in use
(-) (-) (-)
(-) (-) (-)
Monitoring
• Bacterial Monitoring
• Corrective actions
• TCEQ will require a Corrective Action when a fecal indicator is found in the groundwater source.
• There are 6 possible corrective actions.
Monitoring
Approved Corrective Actions:
1. Correct all significant deficiencies
2. Provide alternate source of water
3. Eliminate source of contamination
4. Provide 4-log viral treatment
5. Well disinfection in accordance with AWWA procedures
6. A state-specified period of source assessment monitoring
Corrective Action Timeline
Day 30 Day 0 Day 120 Day ?
Lab notifies
PWS of a raw
water fecal (+)
sample result,
PWS creates
PN
Communicate
with TCEQ
Complete corrective
action or in compliance
with a schedule
Notification to
TCEQ
Monitoring
• Chemical Monitoring
• Numerous Contaminants
• Systems type determines sampling frequency
• TCEQ conducts sampling
Monitoring
• Chemical Monitoring
• TCEQ determines sampling schedule
• Schedule can be found on TCEQ website
• “Drinking Water Watch,”
• http://dww.tceq.texas.gov/DWW/
Monitoring
• Compliance Determination
• Both microbial and chemical contaminants
have a limit set by “EPA” called a Maximum Contaminant Level (MCL)
• MCL based on evaluation of health risk data and cost to treat contaminant
• TCEQ staff in Public Drinking Water section do compliance determination
Monitoring
• Public Notice
• Public Notice is required when a sample is above the MCL or is not collected
• Schedule for public notice can differ per rule
• TCEQ staff in Public Drinking Water section in Austin can assist
Operating
• Operating a Public Water System:
• Capacity
• Recordkeeping
Operating
• Operation activities at Public Water System are evaluated by the TCEQ region offices
• Evaluation is conducted during Comprehensive Compliance Investigations (CCI)
Facility Notification
● Courtesy call approximately 1 to 2 weeks prior to
investigation, unless...
● TCEQ Region Office advises facility that ALL
Required Records must be available for review
at the time of the scheduled CCI
● Records checklist provided in advance, request it
What to Expect During the CCI
● File and Record Review
● Facility Evaluation
● Distribution Evaluation
● Exit Interview
Capacities
● Well Pumping Capacities
● Storage Tank Capacities
● Pressure Tank Capacities
● Service Pump
● Raw/Transfer Pumping Capacities
● Proprietary Treatment System Capacities
Capacities
Example:
System with >250 connections:
Two wells – 0.6 gpm/connection
Total storage of 200 gallons/connection
Two service pumps – 2.0 gpm/connection
Elevated Storage Tank - 200 gpm/connection
Apartment
Building with
16 Units
Retail Meters = 1
Retail Connections = 16
Water Meter
Required Records
● Certified Operators
● CSI Certificates
● Wholesale Water Contracts
● Monthly Operating Reports
● ANSI/NSF Certifications
● Plumbing Ordinance or Service
Agreements
● Well Plugging Reports
● Well Logs
Required Records
● Construction and Interim
Approval Letters
● Up-to-date Maps of the
Distribution System
● Tank Inspection Reports
● Back-Flow Prevention
Program
● Sanitary Control
Easements
● Variances or Exemptions
Two Year Retention Schedule
§290.46(f)(3)(A)
● Volume of water treated each day or each week
● Amount of chemicals used each day or each week
● Dates dead-end-mains are flushed
● Complaints received by the system (detailed)
● Dates storage tanks and facilities are cleaned
● Maintenance records for equipment and facilities
Three Year Retention Schedule
§290.46(f)(3)(B)
● NOV’s and Corrective Actions
● Copies of Public Notices issued by the system
● Disinfectant Residual Monitoring (Distribution)
● Calibration Records/Laboratory/Meters/Etc.
● Backflow Prevention Device Programs (initial
installs and annual calibrations)
Five Year Retention Schedule
§290.46(f)(3)(D)
● Microbiological Analyses
● Annual Inspections for Water Storage and
Pressure Tanks
● Inspections for Pressure Filters
Ten Year Retention Schedule
§290.46(f)(3)(E)
● Monthly Operating Reports
● Chemical Analyses
● Customer Service Inspections (CSI)
● Written Reports, Summaries, Communications
Inspections of the system conducted by the
system, private consultants, or the TCEQ
● GWR 4-Log Minimum Specified Residual
Monthly Operating Report (New)
Monitoring Plans and Operations Manual
§290.121and §290.42(l)
Monitoring Plan
● Identify all sampling locations and entry points
● Describe sampling frequency
● Procedures and labs used
● Can be updated at any time must work with
TCEQ Public Drinking Water to get approved
Operations Manual
● Operator routine maintenance and repair
procedures
● Protocols in the event of a natural or man-made
catastrophe
● Telephone numbers of personnel and agencies to
be contacted in the event of an emergency.
Calibration Requirements
§290.46(s)(1)
● CALIBRATE EVERY 3 Years
● Well Meters, Groundwater Production Meters
Flow Measuring Devices
Disinfectant Residual Analyzers
§290.46(s)
● Bench-top Accuracy Verification - 30 DAYS
(With known concentrations – Gel Standards)
● On-Line Calibration - 90 DAYS
● (With known concentrations)
● On-Line Calibration Check -MONTHLY
( With known concentrations OR comparing with
results of an approved bench-top, amperometric,
spectrophotometric, or titration method)
Storage Tanks
Ground and Elevated
● General Condition
● Inlet and Outlet
● Water Level Indicators
● Vents
● Hatches
● Overflows
● Ladders
● Fencing
Storage Tanks
Pressure
● General Condition
● Air-To-Water Volume Indicators
● Pressure Release Devices
● Pressure gauges
● Air Filters
Disinfection
● General Condition of Facilities, Equipment and
Housing, Scales
● Vents, Fans if necessary
● Injection Points
● NH3 bottle
● SCBA
● Capacity > 50%
Distribution
● Check your chlorine residual
● Pressure (measured at highest elevations)
● Leaks
● Exposed lines
Exit Interview
● Previous CCI issues
● Current Deficiencies
● 14-Day Area of Concern Notification
● Additional Issues
● Exit Interview Form
After Receiving the Letter
If Violations are Noted
● Respond in writing by the compliance due date
● Option to Contest Violations
(contact person on letter)
● Read and understand “Corrective Action”
● Call region office for technical assistance and for
time extensions
GUIDANCE MANUALS
Download these manuals from the TCEQ Website at
http://www.tceq.texas.gov
Just insert the document number in the subject search box
●RG-195: 30 TAC Chapter 290 Subchapter D
●RG-346: 30 TAC Chapter 290 Subchapter F
●RG-384: How to Develop a Monitoring Plan
●RG-407: Disinfectant Residual Reporting
Need Assistance
● Financial, Managerial and Technical (FMT)
assistance can be requested through Public
Drinking Water Section
● Small Business and Local Government
Assistance Hotline 1.800.447.2827
● Public Drinking Water Conference
August 7 – 8, 2012, Austin Texas
Elston Johnson
Water Supply Division
● TCEQ Headquarters - Austin, Texas
● Office: 512.239.0990
● Direct Line: 512-239-6266
● E-mail: [email protected]