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Town of Aurora – Pilot Inflow and Infiltration (I/I) Reduction Project – Aurora 2C Lands

Innovative solutions in land development are crucial for sustainable growth. Civica Infrastructure Inc., in collaboration with TACC Developments Inc., recently spearheaded an inflow and infiltration (I/I) reduction pilot project in the Town of Aurora. This initiative aimed to identify and remediate I/I sources within local and regional sanitary sewer systems, thereby optimizing new development capacity allocation.

Project Description

Civica’s primary objective was to aid TACC Developments in reducing inflow and infiltration in the Town of Aurora. Civica located and fixed I/I sources at the local and regional sanitary sewer systems. In return, they received new capacity development capacity allocation.

The project took a systematic approach, investigating over 250 hectares and more than 3,000 lots. The methodologies included:

Through these comprehensive site-specific environmental studies (SSES), 196 I/I sources were identified across 20 catchment areas.

These sources included:

  • 60 Residential Downspouts
  • 34 Sanitary Manhole Covers
  • 32 Roof Leaders
  • 20 Mainline Point Repairs
  • 13 Roof Leaders connected to a Sump Pump
  • 14 Sanitary Manhole Frame and Cover Repairs
  • 10 Catch Basins
  • 9 Sump Pumps
  • 2 Cleanouts
  • 2 Mainline Full Segment Repairs

Of the identified sources, 170 were successfully remediated. The remaining 26 were not addressed due to property owner consent issues or lack of cost-effective remediation options.

Relevance of Experience

Civica’s extensive experience in environmental monitoring and various investigative techniques proved invaluable for this project. Key areas of expertise included:

  • Environmental Monitoring
  • Flow and Rainfall Monitoring
  • Smoke/Dye and Lot Investigations
  • Advanced GIS Analysis and Numerical Modelling
  • Pipe and Manhole CCTV Inspection
  • Preliminary Design, Alternative Sizing, and Cost Estimation
  • Detailed Design, Permitting, and Construction Estimation
  • Flow Reduction Verification

Lessons Learned

  • Robust Stakeholder Communication Plan: A well-thought-out communication plan is essential for effective investigations on private properties. This includes lot inspections, smoke and dye testing, and foundation drain inspections.
  • Stakeholder Sign-Offs: Ensuring stakeholder sign-offs at multiple checkpoints guarantees the success of remediation works.
  • Warranty Period: Offering a warranty period for remediation works on private properties ensures stakeholder satisfaction and trust.
  • Incentives for Innovation: Municipal incentives to test innovative techniques and products would significantly benefit future I/I reduction initiatives.

Choose Civica for Your Inflow and Infiltration Reduction Project

The Town of Aurora’s pilot I/I reduction project is a testament to the importance of collaborative efforts and innovative solutions in land development. By leveraging its expertise in flood analysis, environmental monitoring, and remediation, Civica ensured the project’s success, providing valuable lessons for future endeavours.

For more detailed insights and to learn how you can implement similar inflow and infiltration strategies in your projects, contact Civica today. Let’s work together to create sustainable and efficient land development solutions.