LSSE provides wastewater facilities planning, design, bid document preparation and construction phase for new systems, rehabilitation of existing systems, as well as unique source reduction (inflow/infiltration programs). Recent experience includes planning through construction phase services for over 138 miles of sanitary/combined sewers and 10 wastewater treatment plants. LSSE has also maintained a prominent role in one of the nation’s largest and most complex wet weather control programs, the Allegheny County (ALCOSAN) wet weather control program mandated under a Federal EPA Consent Decree, which has an estimated cost of over $ 3 billion. No other regional, western Pennsylvania firm had equivalent status in this multi-phase regional program, which involved eight teams lead by one of the nation’s Engineering News-Record (ENR) Top–10 Wastewater Engineering firms.

Facilities Planning, Design, Construction Phase, and Surveying Services:

  • Separate Sanitary Sewers
  • SSO Elimination
  • Combined Sewer Separation
  • CSO Mitigation
  • Pump Stations
  • Small Diameter Pressure Sewers
  • Wastewater Treatment Process
    • Grit Removal
    • Odor Control
    • Biological/Chemical Treatment
    • Clarification
    • Disinfection
    • Solids Management/Disposal
  • Flow Equalization Facilities

SPECIALIZED STUDIES/INVESTIGATIONS:

  • Community and Multi-Jurisdictional Wastewater Facilities Planning (PA Act 537), Design and Permitting
  • Consent Order and Sewage Facilities Corrective Action Plans
  • Operation and Maintenance Programs
  • CSO/SSO Characterization Studies/Evaluations
  • Wastewater Process Optimization
  • Hydraulic Re-Rating Studies
  • Industrial Pretreatment
  • Rate Studies
  • PA Act 57 Tap Fee Analysis
  • Developer Reviews
  • Annual/Capital Budgets
  • Permit Renewals
  • Chapter 94 Reports
  • Vulnerability Assessments
  • Grant Assistance/Administration
  • GIS – Asset Management
  • Infiltration/Inflow (I/I) and Source Reduction Studies
    • Flow Monitoring and QA/QC Analysis
    • Flow Isolation Studies
    • Present Worth-based Cost-effectiveness Analysis
    • Design
    • Permitting and Implementation
    • Post Project Certification
    • Hydraulic and Hydrologic Modeling/Analysis
    • Partial Parallel Replacement to eliminate SSO’s and achieve significant RD I/I and GWI Flow Reduction
    • RTK Analytic Parameters to be put into SWMM Models to assess Pipe Capacity Analysis