Florida Aquifer Protection: The Regulatory View

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• Florida Aquifer Protection The Regulatory View

Judy Richtar UIC Program Manager Southwest
District
American Ground Water Trust ASR IV April 16,
2004
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Federal Requirements for all Class V Wells

• Prohibition to endanger (40 CFR 144.12)
• Does not allow the movement of fluid containing
  any contaminant into USDWs, if the presence of
  that contaminant may cause a violation of any
  primary drinking water regulation or adversely
  affect public health.

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ASR Standards

• Injection into a USDW
• Primary drinking water standards
• Secondary drinking water standards
• Not adversely affect health of persons

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ASR Standards

• Injection into non-USDW
• No standards _at_ point of injection
• Meet standards if migration into USDW
• (lateral vertical)

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Water Quality

• Primary Secondary standards
• Public health issues
• Pathogen survival / transport

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Point of Compliance

• Point of injection
• Within the aquifer
• Recovered water

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Monitor Well Network

• Storage zone
• Seasonal storage
• Long-term storage
• Recovery efficiency

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Recovery Efficiency

• Volume vs. Water Quality
• Potable water issues
• Reclaimed water issues

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Drinking Water Program

• Recovered water quality
• DO / pH / arsenic / TTHM / turbidity
• Dissolved Fe
• Total sulfide
• 226Ra/228Ra
• HAA5s

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Recovery Efficiency

• Volume vs. Water Quality
• Potable water issues
• Reclaimed water issues

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Cycle Schedule

• Volumes / storage duration
• Length of cycles
• Number of cycles
• Recovery
• to native water quality
• to injected fluid quality
• to parameter-specific levels

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Other Considerations

• Geophysical logging after testing
• Financial responsibility
• Mechanical integrity testing
• Geochemical modeling
• Ground water tracers
• ZOD for all ASR systems

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FL Reclaimed ASR Criteria

• Principal vs. Full Treatment
• TOC annual avg. 5 mg/L
• max. 9 mg/L
• TOX annual avg. 0.2 mg/L
• max. 0.3 mg/L

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FL Reclaimed ASR Criteria

• Into lt 1,000 mg/L TDS aquifer
• Full treatment disinfection
• Into 1,000 to 3,000 mg/L TDS aquifer
• Not current / future public water source
• Principal treatment disinfection
• Into gt 3,000 mg/L TDS aquifer
• Principal treatment disinfection

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FL Reclaimed ASR Criteria

• High-level disinfection
• Class I reliability
• 24-hour operator attendance
• Approved operating protocol
• Reject storage / wet weather storage
• Monitoring requirements

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Zone of Discharge

• Volume underlying a site to the property boundary
• Excludes lt 1,000 mg/L TDS aquifer
• Reclaimed ASR only
• Secondary standards sodium only

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FL UIC Program Website

• http//www.dep.state.fl.us/water/uic/index.htm