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Wastewater

SacSewer NPDES Permit Renewal and Regulatory Support

Since 1990, LWA has been a trusted partner for SacSewer (formerly Regional San) guiding the agency through complex regulatory processes and supporting the evolution of Sacramento’s wastewater treatment facilities.

What Sets Us Apart

  1. Long-term Partnership: We have provided over three decades of continuous support, demonstrating our commitment and deep understanding of the client’s needs.
  2. Comprehensive Expertise: We navigated complex regulatory requirements while supporting major facility upgrades.
  3. Innovative Problem-Solving: We developed creative solutions to meet stringent environmental standards while ensuring operational efficiency.
  4. Advanced Modeling Capabilities: We used state-of-the-art water quality modeling to support scientifically sound permit limits.
  5. Adaptive Approach: Our strategies have evolved with changing regulations and emerging contaminants of concern.

Key Services and Achievements

  • Permit Renewal Support:
    • We successfully guided SacSewer through multiple NPDES permit renewals since 1990.
    • We prepared comprehensive Reports of Waste Discharge and Anti-Degradation Analyses.
  • Technical Studies and Analyses:
    • We conducted specialized studies on mixing zones, thermal impacts, and treatment plant performance.
    • We performed statistical analyses to assess compliance and determine reasonable potential for pollutants.
  • Regulatory Negotiation:
    • We prepared detailed comments on draft permits and orders.
    • We supported SacSewer through permit appeals and negotiations with regulatory agencies.
  • Innovative Compliance Strategies:
    • We developed approaches for complex issues like toxicity compliance and disinfection byproduct management.
    • We evaluated the performance of advanced treatment processes like Biological Nutrient Removal.
  • Emerging Contaminant Management:
    • We addressed challenges posed by emerging contaminants like N-nitrosodimethylamine (NDMA).
    • We developed strategies to mitigate downstream impacts on dissolved oxygen levels.
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