Projects & Services

Originally established as C.C. Tatham & Associates Ltd. in 1988 and rebranded as Tatham Engineering Limited in 2019, we provide engineering and advisory services to public and private sector clients in a wide range of civil engineering disciplines. From conceptual and preliminary design, through to construction and implementation, we recognize that each project and client partnership is unique.

For each, project delivery must balance client needs and wants, site and environmental constraints, approval requirements, project timelines and project budgets. Our approach to achieving this balance is consistent – through commitment, quality and resolve. Our clients appreciate this and have rewarded us with repeat opportunities – many of our client relations span 20+ years.

See how we’re enhancing our communities:

AIR & NOISE

ELECTRICAL

MUNICIPAL
INFRASTRUCTURE

TRANSPORTATION

ASSET
MANAGEMENT

HYDROGEOLOGY

STRUCTURAL – BRIDGES

WATER &
WASTEWATER

CLIMATE
RESILIENCE

LAND
DEVELOPMENT

STRUCTURAL – BUILDINGS

WATER
RESOURCES

COASTAL

MECHANICAL

SURVEY &
CONSTRUCTION

Air & Noise

  • Ontario Air and Noise Environmental Compliance Approval (ECA) submissions
  • Environmental Activity and Sector Registry (EASR) registrations
  • Annual written summary reports
  • Emission Summary and Dispersion Modelling (ESDM) report and Acoustic Assessment Report (AAR) updates
  • Best management practice plans for dust and odour control
  • Air quality assessment for road Class Environemntal Assessment (EA) projects
  • National Pollutant Release Inventory (NPRI) quantification and reporting
  • City of Toronto ChemTRAC quantification and reporting
  • Federal Greenhouse Gas Reporting Program and provincial greenhouse gas screening, quantification, and reporting
  • Predictive Ontario regulatory air dispersion modelling
  • Environmental Emergency (E2) dispersion modelling

Asset Management

  • Reserve fund studies
  • Road needs studies
  • Road condition assessments
  • Infrastructure inventories
  • Life cycle costing
  • Funding applications for government programs

Climate Resilience

  • Sector and process specific greenhouse gas emission quantification
  • Climate change financial and risk analysis and business case modelling
  • Climate change action planning
  • Ontario Emission Performance Standard (EPS) opt-in support
  • Infrastructure design for climate resiliency
  • Natural hazard assessment for climate resiliency including floodplain and shoreline hazards
  • Infrastructure vulnerability/risk assessment
  • Asset management
  • Green infrastructure/nature based solutions for climate resiliency
  • Sustainability advisory services including LEED and Envision
  • Civil/mechanical and electrical support for Green Energy projects
Coastal Services

Coastal

  • Shoreline hazard assessments
  • Coastal process modelling
  • Shoreline protection structure design, repair and rehabilitation, including emergency work
  • Design of nature-based shoreline protection
  • Class Environmental Assessments in support of shoreline works
  • Field investigations including topographic survey, bathymetry and visual condition assessment
  • Regulatory approvals and stakeholder consultation
  • Construction oversight including construction inspection, contract administration and certification

Hydrogeology

  • Local and regional scale groundwater assessments
  • Source water protection planning and implementation
  • Assessment of groundwater-surface water interactions
  • Water budgets
  • Low Impact Development (LID) assessments
  • Construction dewatering plan development and review
  • Preparation of hydrogeological reports and compliance monitoring programs
  • Submission of MECP Permit-To-Take-Water (PTTW) and/or Environmental Activity and Sector Registry (EASR) registration
  • Water well and septic system feasibility studies (MECP D-5-5 and D-5-4, and Large Subsurface Disposal Systems)
  • Peer reviews
Services Electrical

Electrical

  • Interior, exterior & roadway lighting
  • Emergency lighting, exit sign & fire alarm systems design
  • High voltage substation design
  • Medium voltage servicing design
  • Low voltage distribution design
  • Supervisory Control & Data Acquisition(SCADA) & Programmable Logic Controllers (PLC) systems design
  • Security access control & surveillance systems
  • Communication data systems design
  • Control systems design, review & specifications
  • Solar, wind & hydraulic system design
  • On-site services, including inspections & commissioning
  • Electrical equipment studies, building assessments & peer reviews

Mechanical

  • Heating, ventilation & air conditioning
  • Domestic water & backflow prevention
  • Sanitary drainage & venting
  • Boiler, chiller, & hydronic systems
  • Humidification & dehumidification systems
  • Toxic gas monitoring & exhaust systems
  • Industrial ventilation
  • Building automation & control systems
  • Building energy & water conservation
  • Equipment condition assessments, reviews & evaluation
  • Pumping system design & optimization

Land Development

  • Site plans & approvals
  • Grading & drainage
  • Site servicing
  • Septic systems
  • Residential subdivisions
  • Industrial parks
  • Servicing studies & reports
  • Erosion & sediment control

Structural – Bridges

  • Public and Private Sector Projects
  • Planning Studies
  • Class Environmental Assessments
  • Public Consultation
  • Approach Guide Rail Safety Assessments
  • OSIM Bridge, Culvert and Retaining Wall Inspections
  • Emergency Inspections and Investigations
  • Rehabilitation and Replacement Design
  • Community Trail Bridges

Structural – Buildings

  • Structural engineering for new buildings, including multi-storey residential, commercial, institutional, and industrial
  • Building renovations & additions
  • Custom homes & home renovations
  • Cottage renovations & boathouses
  • Condition assessments & evaluation of existing structures
  • Design of structural repairs for buildings and infrastructure
  • Shoreline structures including wharves, docks, and shorewalls
  • Retaining walls & headwalls
  • Holding tanks, wet wells & reservoirs
  • Water treatment plants & pump stations
  • Dam safety studies & rehabilitation

Municipal Infrastructure

  • Infrastructure renewal & reconstruction
  • Watermain, sanitary & storm sewer systems
  • Stormwater management
  • Road design & reconstruction
  • Streetscape improvements
  • Boat launch & municipal docks
  • Development charge studies
  • Engineering standards reviews
  • Peer reviews
  • Class environmental assessments

Survey & Construction

  • Topographic & as-built surveys
  • Construction control & staking
  • Contract & tender documentation
  • Tender administration & evaluation
  • Contract administration & construction inspection
  • Shop drawing reviews
  • Construction certification

Transportation

  • Road widening & improvements
  • Intersection improvements
  • Roundabouts
  • Pavement markings & signage plans
  • Parking analysis & design
  • Traffic impact studies & briefs
  • Traffic operational reviews
  • Site access reviews
  • Transportation master plans
  • Environmental assessments
  • Active transportation
  • Road & bridge rationalization studies

Water & Wastewater

  • Water supply, treatment, storage & pumping
  • Wastewater collection, pumping & treatment
  • Effluent disposal, including subsurface disposal beds
  • Hydraulic modelling
  • Compliance & performance reporting
  • Servicing studies & master plans
  • Class environmental assessments
  • Flow monitoring & inflow/infiltration control studies
  • Operations & maintenance manuals

Water Resources

  • Hydrologic & hydraulic modelling
  • Stormwater management planning
  • Water quality & quantity control
  • Low impact development features
  • Natural channel designs
  • Flood control, mapping & assessments
  • Riverbank & shoreline remediation
  • Shoreline hazard & setback assessment
  • Erosion & sediment control
  • Stormwater master planning
  • Class environmental assessments
  • Surface water & groundwater monitoring