Overview: The Neenan Company was contracted to design and build the school expansion. Given the absence of suitable surface water disposal options and the Colorado Department of Public Health and Environment’s (CDPHE) mandate for subsurface discharge with less than 10 mg/L total nitrogen, a specialized treatment system was essential. IWS was selected for their expertise in designing, permitting, and constructing such complex systems.

IWS’s Key Contributions:

IWS played a critical role in overcoming the project’s regulatory hurdles. Specifically, IWS:

• Developed an Innovative System: Designed a wastewater treatment system combining Advantex AX-100 pods with IWS denitrification up-flow filters to meet the stringent CDPHE nitrogen discharge requirements (less than 10 mg/L).
• Secured Regulatory Approval: Worked closely with CDPHE to gain approval for this novel system, which was a first for the agency in subsurface dispersal applications.
• Engineered a Comprehensive Solution: Designed the complete system, including:
  • a 15,000-gallon septic tank.
  • a 10,000-gallon anoxic tank.
  • a 15,000-gallon recirculation tank.
  • six AX-100 Advantex pods.
  • two 8,000-gallon denitrification up-flow filter tanks.
  • a 6,000-gallon dosing tank.
  • a 40,000 sq. ft. drain field.

Successful Project Delivery:  Through IWS’s innovative design, regulatory expertise, and meticulous construction, the Sargent Schools wastewater treatment system was successfully implemented, meeting all CDPHE requirements. This achievement enabled the seamless integration of the new high school building, ensuring a sustainable and compliant wastewater solution for the rural community.

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