1. Executive Summary

The BBCAB Project in Al Bahya, Abu Dhabi, is a strategic infrastructure development initiative aimed at converting an existing canal into engineered, stable land to support future residential construction and associated urban infrastructure. In alignment with Abu Dhabi’s environmental protection objectives and the requirements of the Environment Agency – Abu Dhabi (EAD), a structured ambient air quality monitoring program was implemented during the execution phase.

This report presents the methodology, results, and performance evaluation of the air quality monitoring component of the BBCAB Project. The monitoring program focused on:

Particulate Matter: PM2.5 and PM10

Carbon Dioxide: CO2

Total Volatile Organic Compounds: TVOC

Monitoring results demonstrate that air quality impacts associated with project activities were effectively managed. Particulate levels, while elevated during peak construction periods, were reduced following the implementation and optimization of dust control measures. CO2 levels remained within typical ranges for active construction sites, and TVOC concentrations were consistently non-detectable at monitoring locations. Overall, the BBCAB Project maintained acceptable ambient air quality conditions and complied with project environmental management requirements.

2. Project Overview

2.1 Project Description

The BBCAB Project involves the controlled backfilling of an existing canal using engineered fill material to create stable land intended for:

Future residential building construction

Associated infrastructure and urban expansion

Potential future landscaping, public amenities, or ecological enhancement areas

The works include large-scale material handling and logistics operations, notably:

Transport of Gatch and other fill materials by heavy trucks

Placement and compaction of fill materials

Operation of heavy construction machinery across the site

2.2 Environmental and Community Context

The project is located in close proximity to:

A residential neighborhood

A nearby school (sensitive receptor)

Due to these sensitivities, management of air quality impacts—especially dust generated by truck movements, stockpiling, and earthworks—was identified as a priority. The air quality monitoring program was therefore designed to:

Characterize ambient air conditions at and near critical receptor locations

Assess the influence of construction activities on air quality

Support timely implementation and verification of mitigation measures

Demonstrate compliance with EAD requirements and internal project environmental performance targets

3. Air Quality Monitoring Framework

3.1 Objectives

The air quality monitoring program for the BBCAB Project was established with the following key objectives:

Quantify ambient concentrations of key pollutants associated with construction activities, particularly PM2.5, PM10, CO2, and TVOC.

Identify temporal trends in air pollutant concentrations in relation to construction activity levels.

Evaluate the effectiveness of mitigation measures, including dust suppression, traffic management, and equipment maintenance.

Provide evidence of compliance with applicable environmental criteria and project-specific environmental management requirements.

3.2 Monitoring Parameters

The following parameters were monitored:

PM2.5

Fine particulate matter with aerodynamic diameter

≤

2.5

 

μ

m

≤2.5μm, associated with combustion sources and fine dust.

PM10

Coarse particulate matter with aerodynamic diameter

≤

10

 

μ

m

≤10μm, largely associated with dust from earthworks, unpaved roads, and material handling.

CO2 (Carbon Dioxide)

Indicator of combustion emissions from diesel-powered trucks and construction equipment, as well as site occupancy and ventilation characteristics.

TVOC (Total Volatile Organic Compounds)

Aggregate measure of volatile organic vapors, potentially arising from fuel handling, exhaust emissions, and other site-related sources.

3.3 Monitoring Equipment and Methodology

Air quality monitoring was conducted using the Tekneka Air Quality Monitoring Device, which is capable of continuously measuring and logging the target parameters with suitable resolution and accuracy for construction-site ambient monitoring.

Key elements of the methodology included:

Monitoring Locations

Strategically selected points in and around the project site, with emphasis on:

Areas of intensive material handling and truck maneuvering

Interfaces with the adjacent residential neighborhood

Locations representative of exposure near the nearby school

Monitoring Period

Continuous or regular monitoring during normal site operating conditions over the period August to December, with data aggregated into monthly average values.

Data Treatment

Raw readings collected in the field were processed to generate weekly and monthly summaries.

Monthly averages were used as the primary basis for performance evaluation and trend analysis.

4. Monitoring Results

4.1 Monthly Average Concentrations

The following table summarizes the monthly average concentrations of PM2.5, PM10, CO2, and TVOC recorded during the monitoring period.

Table 1 – Monthly Average Air Quality Parameters (BBCAB Project)

Month PM2.5 μg/m3 PM10μg/m3 CO2ppm TVOCppb

August 35.20 50.82 443.03 0

September 51.40 76.00 775.00 0

October 42.70 85.50 768.00 0

November 42.15 84.90 768.00 0

December 18.60 21.30 768.00 0

Trend Analysis:

Elevated PM2.5 and PM10 levels in September, October, and November correlate with:

Periods of intensified construction and backfilling activities

Increased truck movements for Gatch transport

Heightened earthworks and material stockpile handling

A marked reduction in both PM2.5 and PM10 in December indicates:

Optimization and consistent application of dust control measures

Stabilization of major earthwork activities and potentially reduced material handling intensity

Mitigation Measures and Their Effectiveness:

The downward trend in December is attributable to enhanced and sustained environmental control measures, including:

Regular water spraying on haul roads, unpaved surfaces, and active work fronts

Appropriate management of stockpiles (e.g., reduced heights, optimized locations, and, where necessary, covering)

Speed controls for project vehicles on unpaved or partially treated road surfaces

Maintenance of trucks and machinery to reduce excessive exhaust and fugitive dust emissions

These measures proved effective in reducing particulate concentrations in the later stages of monitoring, demonstrating responsive and adaptive environmental management.

5.2 Carbon Dioxide (CO2)

CO2 concentrations reflected the overall level of combustion-related activity and general site occupancy:

Values increased from 443.03 ppm (August) to approximately 775 ppm (September), and then remained relatively stable (around 768 ppm) from October through December.

The overall average CO2 concentration was

704.41

 

ppm

704.41ppm.

Interpretation:

The increase between August and September coincides with ramp-up in construction operations and associated vehicular and equipment use.

The subsequent stability indicates a consistent level of site activity without evidence of abnormal CO2 accumulation or inadequate dispersion.

Recorded values are within typical ranges for active outdoor construction environments.

5.3 Total Volatile Organic Compounds (TVOC)

TVOC levels were consistently recorded as:

TVOC:

0

 

ppb

0ppb for all monitored months.

Interpretation:

The non-detectable TVOC levels suggest that:

VOC emissions from project-related sources (e.g., fuel handling areas, machinery exhaust, chemical product usage) were not significant at the monitoring locations, or

Any VOC emissions present were sufficiently low and well-dispersed so as not to be detected by the monitoring equipment at the recorded resolution.

This result indicates that VOC-related air quality impacts from BBCAB activities were negligible at ambient receptor locations.

6. Compliance, Risk Management, and Conclusions

6.1 Compliance with Environmental Requirements

The air quality monitoring program was aligned with the monitoring and reporting requirements of the Environment Agency – Abu Dhabi (EAD) and internal project environmental management plans. Key aspects of compliance and good practice include:

Systematic measurement and documentation of PM2.5, PM10, CO2, and TVOC across the active construction period.

Strategic placement of monitoring points to capture conditions near sensitive receptors (residential area and nearby school).

Use of monitoring results to reinforce and refine mitigation measures as required.

Based on the recorded data and trend analysis:

There is no indication of persistent or uncontrolled deterioration in air quality attributable to the project.

The project maintained acceptable air quality performance in line with its environmental commitments.

6.2 Environmental Risk Management

The BBCAB Project adopted a proactive approach to managing air quality risks:

Identification of high-risk activities (truck traffic, earthworks, stockpiling) and timely deployment of controls.

Continuous improvement driven by monitoring feedback, particularly evident in the reduction of particulate levels in December.

Integration of environmental considerations into construction planning and logistics (e.g., route selection, work sequencing).

This approach minimized potential nuisance and health risks for the surrounding community and contributed to responsible project delivery.

6.3 Overall Conclusions

The findings of the air quality monitoring program for the BBCAB Project can be summarized as follows:

Air quality was effectively controlled throughout the monitoring period.

While particulate matter levels increased during peak activity months (September–November), they were subsequently reduced through targeted and sustained mitigation measures, as evidenced by the significant improvement in December.

CO2 concentrations were consistent with typical construction-related emissions.

The recorded values reflected normal operational conditions and did not suggest any unusual or hazardous accumulation.

TVOC concentrations were non-detectable at monitoring points.

This indicates that VOC-related emissions were negligible or effectively dispersed, and that no significant TVOC impact was imposed on the surrounding environment.

The project demonstrated adherence to environmental management best practices.

Through systematic monitoring, responsive mitigation, and attention to sensitive receptors, the BBCAB Project met its air quality management objectives and regulatory expectations.

Conclusion:

The BBCAB Project was executed with a robust and responsive air quality management program. Monitoring results confirm that the project’s air emissions and dust generation were controlled to acceptable levels, thereby protecting nearby residents, the school community, and the local environment while supporting the successful delivery of a critical urban development initiative in Al Bahya, Abu Dhabi.