Assessment of Diesel Management, Fuel Losses, and Generator and Tank Emissions in Saudi Arabia
Link the fuel cycle—from tanker delivery to equipment dispensing—with practical environmental compliance decisions. We review storage, handling, and inventory, identify where inventory discrepancies arise and where leaks could lead to soil contamination, and measure generator emissions and noise levels for regulatory compliance.
Albuad Environmental Company provides a diesel management and fuel loss assessment service for construction sites and facilities in Saudi Arabia. We review the fuel cycle and inventory balance, measure generator emissions and noise, assess oil tank emissions, and identify vapor recovery opportunities, delivering outputs ready for inclusion in the project's Environmental Management Plan (EMP).
What is meant by the Diesel Management, Fuel Loss, and Emission Assessment?
It is an integrated review of the site's fuel cycle, from the receipt of diesel tankers to storage, refueling, and dispensing to equipment. It involves matching supplier receipts with tank and meter readings to identify where discrepancies originate. The assessment includes measuring generator stack emissions during documented operations and evaluating noise at points representing affected areas, according to the regulatory standards applicable to each source.
The service falls under environmental compliance for construction sites and facilities. It can be requested for one or multiple sites, and its outputs are designed for contractors to incorporate fuel storage and handling procedures into the project's Environmental Management Plan.
Judging results is not reduced to a single number: In exhaust testing, the limit must specify the engine type and operating method, with the result and the limit presented on the same basis. In noise testing, the measurement point must represent the affected area, and the limit for the recorded period must be used (daytime from 07:00 to 20:00 or nighttime from 20:00 to 07:00).
When does your facility need this service?
Start with the environmental permit conditions and monitoring plan. Review the need for an assessment when adding or relocating a generator or tank, changing operating hours, encountering recurring inventory discrepancies, or receiving noise complaints that coincide with operations.
Construction and contracting sites
To review diesel storage and handling from tanker receipt to equipment dispensing, identify where inventory discrepancies arise, and pinpoint where leaks or spills could lead to soil or drain contamination.
Facilities relying on generators
To measure exhaust emissions at the sampling point within the exhaust path during documented load, assess noise at points representing affected areas, and review monitoring reports before including them in the environmental compliance file.
Oil and liquid storage facilities
To estimate emissions from oil and condensate tanks from flash evaporation, storage and operational losses, and compare operational improvement alternatives, vapor recovery units (VRT/VRU), and enclosed combustion.
Diesel and Emissions Management Assessment Service Scope
The scope of the engagement is determined based on the facility type and permit requirements. All three components can be executed together, or any of them can be requested as a specialized assessment.
Storage and Filling
Reviewing stationary and mobile tanks, filling points, secondary containment, drainage paths, and spill response readiness, accompanied by a field observations log identifying the action priority, the responsible party, and the closure evidence.
Supply, Dispensing, and Inventory
Reconciling supplier invoices, tank readings, and meter readings, tracking dispensing to equipment and transfers between sites and subcontractors, with a fuel balance that separates documented losses from measurement or recording errors and unexplained differences.
Usage Efficiency
Reviewing equipment and generator consumption based on operating hours, work volume, or produced power, depending on available data, with comparable indicators to identify equipment or operating patterns worthy of review.
Generator Emissions
Inventorying and classifying generators, testing exhaust under documented operating conditions, and matching the pollutant, unit, and basis of comparison with Article Five of the Executive Regulation for Air Quality and its annexes.
Environmental noise
Identifying measurement points representing affected areas, measuring the equivalent sound level LAeq,T during the period relevant to the complaint or permit, and comparing it with the applicable category limits.
Tanks and Vapor Recovery
Estimating flash evaporation and storage/operational losses, and comparing existing asset optimization, direct recovery (VRU), pre-separation (VRT), and enclosed combustion, along with a post-implementation performance verification plan.
What is the permissible limit for generator noise in Saudi Arabia?
The noise level is compared to the LAeq,T index during the measurement time, and the limit is determined according to the classification of the zone represented by the measurement point and its period. The daytime period is legally defined from 07:00 to 20:00, and the nighttime period from 20:00 to 07:00, in accordance with the Executive Regulations for Noise.
| Classification of the zone represented by the measurement point | Daytime limit dB(A) | Nighttime limit dB(A) |
|---|---|---|
| Category A: Low-density residential areas, surroundings of schools, hospitals, and as defined by the regulations | 50 | 40 |
| Category B: Medium-density residential areas | 55 | 45 |
| Category C: High-density residential areas and mixed residential/commercial zones | 60 | 50 |
| Category D: Commercial zones including warehouses and financial centers | 65 | 55 |
| Industrial zones at the outer boundaries of the activities | 70 | 65 |
Illustrative example: A daytime reading of 58 dB(A) is 2 dB below the Category C limit, but 3 dB above the Category B limit; therefore, the interpretation of the result begins with documenting the point's location, classification, and measurement period. It also includes Noise Implementation Regulations In Article Eight, monitoring data must be retained for at least three years and provided to the National Center for Environmental Compliance upon request.
Noise versus exhaust emissions are two different questions: A sound reading near the generator helps diagnose its equipment, while a reading at the point of impact addresses neighborhood impact. Similarly, an exhaust test is useful for characterizing the source, while an external exposure assessment requires a range suitable for ambient air.
How do we implement the assessment?
Permit review and source inventory
Review environmental permit conditions and the monitoring plan, inventory tanks, generators, and noise points, and prepare a schedule linking each source to its applicable measurements and requirements.
Survey and inventory balancing
Review the fuel cycle from receipt to discharge, collect documented readings, and identify exhaust sampling points and noise measurement points, while coordinating measurements with a licensed service provider as applicable.
Matching results with references
Comparing exhaust and noise results against the applicable reference, verifying the pollutant, unit, and basis of measurement, and interpreting inventory discrepancies into documented losses, measurement errors, and unexplained differences.
Prioritizing corrective actions
Prioritizing pollution prevention and corrective actions based on risk, and comparing measurement, control, and drainage improvements according to their cost, impact, and remaining project duration.
Actionable deliverables
Preparing a fuel balance, a regulatory comparison report, and an implementation and follow-up plan, along with templates for receipt, disbursement, inventory, transfer, and spill documentation.
Closing and performance monitoring
Follow-up on action implementation and verification of observation closure can be added to the technical proposal, measuring the effectiveness of the measure at the affected point under comparable conditions.
What does the facility receive?
We focus on deliverables that the project team or the facility can implement, monitor, and include in the environmental compliance file.
Fuel balance and inventory management
A balance that separates documented losses, confirmed measurement or recording errors, and the remaining unexplained difference, with consumption efficiency indicators comparable between equipment and operational templates for receipt, disbursement, inventory, and transfer.
Documented emissions and noise report
A documented comparison with the applicable reference for each generator, point, and measurement period, stating the limitations of the conclusion and gaps that need to be filled, along with a list of actions prioritized by importance and criteria for verifying their results.
The outputs support Environmental Compliance for Construction Sites AndPreparing periodic environmental reports and records AndStack emission measurements, within the limits of the assignment and project requirements.
Scope of Responsibilities: The role of Al-Bu'd Al-Bee'i (Albuad Environmental Company) is field assessment, analysis, preparation of reports and templates, and identifying performance requirements for proposed alternatives. Regulatory measurements, sampling, and analyses are coordinated with service providers holding the necessary licenses or accreditations, and procurement, installation, operation, and maintenance works are assigned to qualified executive entities under independent commissions.
Deliverables of diesel management, emissions, and fuel loss assessment
The delivery package is determined according to the scope of the commission and may include:
| Director | What does it help you determine? |
|---|---|
| Field observation log for storage and handling | Action priority, responsible party, and closure guide. |
| Fuel balancing and explanation of inventory discrepancies. | Documented loss, measurement errors, and unexplained variances. |
| Utilization efficiency indicators. | Equipment and operational patterns requiring review. |
| Emissions and noise report compared to the baseline. | Position of each result relative to the applicable limit, its period, and its zone category. |
| Corrective action plan and operational models. | Action, responsible party, deadline, and post-treatment verification method. |
| Vapor recovery alternatives study (upon assignment). | Technical and economic comparison of operational improvements, VRT, VRU, and enclosed combustion. |
| Performance monitoring and verification plan. | Measurement points, test conditions, acceptance criteria, and operational responsibilities. |
What data is required to get started?
- Project city or facility, activity type, and its phase.
- Number of tanks, their capacities, and types (fixed or mobile).
- Average monthly diesel supply and current dispensing method.
- Number of generators, their capacities, fuel type, and operating hours.
- Copy of environmental permit requirements or the latest monitoring report.
- The most significant inventory discrepancy, incident, or complaint you wish to evaluate.
If data is limited, a gap review can be initiated to define a phased investigation program.
What determines the cost and duration of the service?
The scope of the price quote is determined by identifying the number of tanks and generators, the pollutants to be tested, the readiness of sampling points, the number of noise measurement points and their monitoring intervals, and the availability of historical data that can be utilized in preparing the report.
The assignment can be divided into phases, starting with a review of the permit and an inventory of sources, followed by measurements and analysis, and ending with a compliance report and action plan. The technical proposal should clarify what can be delivered initially versus what depends on the completion of subsequent measurements.
FAQs on Diesel Management and Emissions Assessment
When does a facility need to measure generator emissions and noise?
Start with the environmental permit conditions and the monitoring plan. Review the need for measurement when adding a generator, relocating one closer to a residential area, or changing operating hours. In the event of a noise complaint, identify the timing of the disturbance and the equipment operating at that time so that the measurement visit accurately reflects the complaint conditions.
Is daytime noise reading sufficient if neighbors complain at night?
Daytime measurement is useful for describing daytime operations. To evaluate a nighttime complaint, measurement should be scheduled for the period when the disturbance occurs (from 20:00 to 07:00), while documenting the generator's operating status and other sound sources during the measurement.
What is the difference between measuring generator exhaust, ambient air, and noise?
Exhaust measurements are taken from an appropriate point in the exhaust path to determine the pollutant concentration from the generator during documented operation. Ambient air is measured at external points selected based on the study objective and impact pathways. Noise is measured at the boundaries or points representing affected receptors to determine the sound level at the point of impact during any given period.
How do I review an environmental monitoring report before using it in the compliance file?
Correlate each result with the generators, points, operating conditions, and periods covered by the measurement. Review the test scope, regulatory reference, limit, unit, noise point classification, test method, equipment identifiers, calibration certificates, raw readings, the method for calculating averages, the proposed action for each observation, and the responsible party for implementation.
How long should noise measurement data be retained?
If the environmental permit requires the facility to monitor noise levels, Article 8 of the Executive Regulation on Noise requires that monitoring data be kept for at least three years and provided to the National Center for Environmental Compliance upon request.
What is the difference between VRT and VRU in tank vapor recovery?
A VRT tower separates part of the gas dissolved in the liquid before it reaches the tank, which occurs due to the pressure drop between the separator and the tank. A VRU unit collects vapors from the tower or tank and prepares them for transport or utilization when a suitable receiving destination is available. Direct recovery from the tank is evaluated if collection and pressure conditions are favorable.
Is it mandatory to install a VRU unit for every oil tank in Saudi Arabia?
Compliance is determined by the applicable regulatory requirements, environmental permit conditions, and the characteristics of the material, tank, and process. The VRU option or others are evaluated based on performance requirements and acceptance by the competent local authority, while reviewing the Executive Regulation for Air Quality and the amended Table of Violations and Penalties.
How are emissions from crude oil and condensate tanks measured?
Flash evaporation emissions are estimated from liquid data and separation/storage conditions or from representative measurements. Storage and operational losses are calculated using a methodology appropriate for the tank type, such as AP-42 Chapter 7.1 where applicable. Loading and leakage are included within the agreed limits, ensuring that the same stream is not double-counted, while clearly indicating measured, calculated, and estimated quantities and their units.
Regulatory and Technical References
The assessment is based on The Executive Regulations for Air Quality and its annexes Including Article Five and the provisions for periodic and continuous monitoring, andNoise Implementation Regulations Within their limits according to area categories and measurement periods, andEnvironmental monitoring reporting service at the National Center for Environmental Compliance. And as technical references U.S. EPA emission testing methods AndAP-42 reference for liquid storage tanks AndVapor recovery units reference. The scope of each site is selected according to its data and applicable permit requirements.
Define your site assessment scope and start with a documented fuel balance
Submit the project city, the number of tanks and generators and their capacities, the average monthly supply, and a copy of the permit requirements or the latest monitoring report. We review your data and propose an assessment scope that clarifies the measurements and outputs that support your site's compliance.