Air Space Assessment for Landfill Sites
Tender Overview
- Tender Number: SCM 56/2025/26
- Client: Metsimaholo Local Municipality
- Tender Type: Request for Quotation (RFQ)
- Project: Air Space Calculation and Landfill Capacity Assessment
- Location: Sasolburg
- Province: Free State
- Closing Date: 02 June 2026
- Closing Time: 11:00
Project Objective
The purpose of this RFQ is to appoint a qualified service provider to conduct a comprehensive airspace assessment of landfill sites within the jurisdiction of Metsimaholo Local Municipality.
The study will assist the municipality in:
- Determining remaining landfill capacity.
- Calculating available airspace.
- Measuring waste accumulation trends.
- Evaluating landfill lifespan.
- Supporting future waste management planning.
- Ensuring compliance with environmental authorisations and waste licences.
Scope of Work
The successful service provider will be required to undertake the following activities:
1. Landfill Survey and Data Collection
Conduct a detailed survey of landfill facilities, including:
- Existing landfill footprint measurements.
- Topographical assessments.
- Current waste levels.
- Site condition verification.
The survey information will form the basis for all volume and airspace calculations.
2. 3D Digital Terrain Model (DTM)
Develop an accurate:
Digital Terrain Model (DTM)
using photogrammetric survey techniques.
The DTM must:
- Represent current landfill conditions.
- Capture existing topography accurately.
- Support volume calculations.
- Enable future monitoring and comparison exercises.
Survey Technology
Expected technologies may include:
- Drone photogrammetry
- UAV mapping systems
- GPS survey equipment
- Geospatial modelling software
- GIS applications
3. Airspace Calculation
Determine:
Remaining Available Airspace
The consultant must:
- Confirm landfill boundaries.
- Verify approved design levels.
- Assess licensed waste disposal areas.
- Calculate remaining disposal capacity.
Where waste licence restrictions exist, calculations must align with:
- Environmental Authorisations
- Waste Management Licences
- Approved landfill designs
4. Verification of Licensed Restrictions
The service provider must:
Review Regulatory Documentation
Including:
- Waste licences
- Environmental approvals
- Landfill design documentation
- Operational permits
The objective is to establish:
- Maximum permitted landfill dimensions.
- Final approved filling levels.
- Remaining legal disposal capacity.
5. Waste Density Analysis
Analyse:
Waste Tonnage versus Volume
The consultant must:
- Correlate incoming waste tonnage with occupied volume.
- Calculate in-situ waste density.
- Determine compaction efficiency.
- Assess landfill performance.
Data sources may include:
- Weighbridge records.
- Manual waste tally sheets.
- Historical disposal records.
6. Historical Trend Analysis
Where historical survey data is available, the consultant must:
Compare Current and Previous Surveys
To determine:
- Annual volume accumulation.
- Airspace consumption rates.
- Landfill growth patterns.
- Remaining operational lifespan.
7. Capacity Forecasting
Where historical surveys are unavailable:
Predict Future Capacity
Using:
- Waste generation data.
- Disposal trends.
- Density calculations.
- Operational assumptions.
Forecasts should estimate:
- Remaining site lifespan.
- Future airspace requirements.
- Expected closure timelines.
8. Landfill Profile Sections
The consultant must prepare:
Engineering Profile Drawings
Showing:
- Existing landfill levels.
- Final approved levels.
- Remaining airspace.
- Waste depth variations.
These profiles will assist the municipality in operational planning.
9. Optimisation Recommendations
Provide recommendations regarding:
Landfill Management Improvements
Including:
- Improved filling sequences.
- Compaction optimisation.
- Airspace conservation.
- Operational efficiency enhancements.
The aim is to maximise landfill lifespan and available capacity.
Technical Requirements
The appointed service provider must demonstrate capability in:
Photogrammetry
Including:
- Aerial image acquisition.
- Data processing.
- Terrain modelling.
- Orthophoto generation.
GIS and Geospatial Analysis
Experience with:
- Geographic Information Systems (GIS).
- Spatial data analysis.
- Topographic mapping.
- Volume calculations.
Environmental Compliance Assessment
Knowledge of:
- Waste Management Act requirements.
- Landfill licensing conditions.
- Environmental authorisations.
- Municipal waste management regulations.
Surveying and Engineering Calculations
Competence in:
- Topographic surveying.
- Earthworks calculations.
- Volume determination.
- Capacity modelling.
Personnel Requirements
The successful bidder should provide suitably qualified professionals such as:
Environmental Specialists
With experience in:
- Waste management.
- Environmental compliance.
- Landfill operations.
Land Surveyors
Registered with relevant professional bodies and experienced in:
- Topographic surveys.
- Geospatial data collection.
- Terrain modelling.
Engineers
Capable of:
- Landfill design assessments.
- Capacity calculations.
- Technical reporting.
Client-Supplied Information
The municipality may provide:
- Existing landfill status information.
- Previous topographic survey reports.
- Waste disposal records.
- Weighbridge information.
- Manual tally records.
- Environmental authorisations.
- Waste management licences.
Recommended Supporting Documents
Bidders should include:
- Company Registration Documents
- CSD Registration Report
- Tax Compliance PIN
- B-BBEE Certificate or Affidavit
- Professional Registration Certificates
- Environmental Accreditation Documents
- Surveyor Registration Evidence
- CVs of Key Personnel
- GIS and Photogrammetry Experience Records
- Similar Project Reference Letters
- Equipment Inventory
- Project Methodology
- Health and Safety Plan
- Quality Assurance Procedures
Evaluation Criteria
The tender will be evaluated on the:
80/20 Preference Point System
80 Points
- Price
20 Points
- Specific goals and locality requirements
Bidders claiming locality points must submit supporting documentation such as:
- Municipal accounts
- Lease agreements
- Proof of business address
- Other acceptable locality evidence
Important Tender Condition
Mandatory Requirement
Bidders must purchase the official bid document from the municipality.
Failure to purchase the bid document may result in automatic disqualification.
Suitable Service Providers
This RFQ is particularly suited to:
- Land surveying firms
- GIS consulting companies
- Drone survey specialists
- Environmental consulting firms
- Waste management consultants
- Geospatial engineering companies
- Civil engineering consultancies
- Photogrammetry specialists
Key Success Factors
Successful bidders should demonstrate:
- Professional surveying capability
- Experience with landfill airspace assessments
- GIS and photogrammetry expertise
- Environmental compliance knowledge
- Accurate 3D terrain modelling capability
- Waste management and landfill planning experience
- Qualified engineers and surveyors
- Strong reporting and forecasting skills