Bahadurgarh Environmental Lab · NABL TC-7710 · Pan-India site monitoring

Ambient Air Quality Monitoring — NAAQS 2009 Compliance

A delayed or rejected air-quality dataset can stall an SPCB consent-to-operate or an environmental clearance for months. Ambient air quality monitoring at Auriga is conducted at our Bahadurgarh Environmental & Industrial Monitoring Laboratory (NABL TC-7710), with CPCB-aligned methods for NAAQS 2009 compliance, EIA baseline studies, and consent-to-operate monitoring. Field teams mobilise to your site and the analysis is completed at the same accredited lab.

Our scope covers all 12 NAAQS 2009 (notified 18 November 2009 by the CPCB) criteria pollutants — PM2.5, PM10, SO₂, NO₂, CO, O₃, lead, ammonia, benzene, benzo(a)pyrene, arsenic, and nickel — using calibrated high-volume samplers, fine-particulate samplers, and continuous analysers. For industrial EIA work we add VOCs, H₂S, and site-specific pollutants, and on request benchmark results against the WHO Air Quality Guidelines 2021 for multinational clients and EIA consultants who need the international reference alongside the Indian standard.

Backed by the Arbro Group's analytical heritage — Arbro Lab since 1990, Auriga Research since 2007 — with NABL ISO/IEC 17025 accreditation, our reports are structured for direct submission to SPCBs, MoEFCC / SEIAA, and EIA consultants — with the NAAQS 2009 comparison table, wind-rose interpretation, and accreditation reference included.

Reports in 12–15 working days of sampling | Expedited compliance reporting available

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Air Quality Parameters

Each pollutant is mapped to its measurement method so EHS and EIA teams can match scope to the NAAQS 2009 criteria-pollutant list at a glance.

PM2.5 / PM10

Particulate Matter

Gravimetric analysis per IS 5182 using fine-particulate and respirable dust samplers on pre-weighed filters.

SO₂

Sulphur Dioxide

Improved West and Gaeke method per IS 5182 — a core NAAQS 2009 criteria pollutant.

NO₂

Nitrogen Dioxide

Modified Jacob and Hochheiser method for ambient NO₂ against the NAAQS 2009 limit.

Carbon Monoxide

Non-dispersive infrared (NDIR) analyser for ambient carbon monoxide.

O₃

Ozone

UV photometric method for ground-level ozone.

BTX

VOCs (Benzene · Toluene · Xylene)

Volatile organic compounds by GC-FID / GC-MS — benzene is a NAAQS 2009 criteria pollutant.

Pb / As / Ni

Heavy Metals

Lead, arsenic, and nickel by ICP-MS after acid digestion of the particulate filter.

NH₃

Ammonia

Indophenol blue method for ambient ammonia.

BaP

Benzo(a)pyrene

Particulate-phase benzo(a)pyrene by HPLC with fluorescence detection.

NAAQS 2009

Full Criteria-Pollutant Panel

All 12 NAAQS 2009 criteria pollutants in a single monitoring campaign, with optional WHO AQG 2021 comparison.

How It Works

Get a Quote & Site Plan

Share your site location, the monitoring objective (SPCB consent, EIA baseline, post-project monitoring), the number of locations, and the parameters required. Your dedicated SPOC confirms the scope, the CPCB siting criteria and sampling duration, and the NAAQS 2009 category that applies to your site.

Field Sampling

Auriga's field team mobilises from the Bahadurgarh Environmental Lab to your site and deploys calibrated high-volume, fine-particulate, and gaseous samplers over the NAAQS-prescribed 24-hour averaging period, with concurrent meteorological logging. Sample chains of custody are bar coded and registered in YLIMS on receipt back at the lab.

Laboratory Analysis & QA Review

Collected filters and impinger solutions are analysed at the Bahadurgarh lab (NABL TC-7710) by gravimetry, spectrophotometry, GC, ICP-MS, and HPLC as applicable. Every result is compared against the NAAQS 2009 limit and passes through a formal internal QA review and sign-off before the report is generated.

Receive Your NABL Report

Your NABL-accredited air quality report is delivered digitally within the committed turnaround time. Reports carry Auriga's NABL accreditation under ISO/IEC 17025:2017, include the NAAQS 2009 comparison table, wind-rose interpretation, and optional WHO AQG 2021 benchmarking, and are accepted by SPCBs, MoEFCC / SEIAA, and EIA consultants. Track sample status in real time through YLIMS.

Turnaround Time

Service	Standard TAT	Express
Field sampling (per location, 24-hour campaign)	24–48 hours	— fixed by NAAQS averaging
Laboratory analysis of collected samples	7–10 business days	Available
Complete report (NAAQS 2009 comparison + wind rose)	12–15 business days	Available
WHO AQG 2021 benchmarking overlay	+ 1–2 business days	On request
EIA baseline season network (8–12 weeks)	Per ToR / EIA schedule	On request
Urgent compliance submission	Expedited	On request

Who Needs Air Quality Monitoring

Industries seeking or renewing consent-to-operate / consent-to-establish from the State Pollution Control Board (SPCB).
EIA study consultants conducting baseline ambient air quality assessments for environmental clearance.
Construction and infrastructure project developers monitoring ambient air during and after the build.
Pharmaceutical and food manufacturers needing ambient monitoring as part of environmental clearance and consent conditions.
Mining, cement, and thermal power projects monitoring per MoEFCC / SEIAA clearance conditions.
Industrial estates and SEZs running periodic ambient monitoring across the campus boundary.
Urban local bodies, smart-city projects, and metro/road authorities assessing project-corridor air quality.
Real estate and township developers near industrial zones documenting baseline and occupancy air quality.
Multinational manufacturers benchmarking sites against both NAAQS 2009 and WHO AQG 2021.
EHS managers building the air-quality dataset for ESG, GRI, or corporate sustainability disclosure.

Why Auriga for Air Quality Monitoring

Bahadurgarh Environmental Lab — NABL TC-7710

Auriga's primary environmental monitoring facility, with a NABL scope explicitly covering the Chemical — Environment & Pollution discipline (~80 parameters across air, water, soil, and effluent) plus site / field testing.

Full NAAQS 2009 criteria-pollutant panel

All 12 NAAQS 2009 criteria pollutants measured and reported against the applicable category limit (industrial / residential / ecologically sensitive), with annual and 24-hour averaging as required.

WHO AQG 2021 benchmarking on request

For multinational clients and EIA consultants, results are benchmarked against the WHO Air Quality Guidelines 2021 alongside the Indian standard — the international context most global EHS teams now expect.

Field + lab under one accreditation

Mobile field teams and the accredited analytical lab sit under the same NABL TC-7710 scope — no sub-contracting of the sampling or the analysis, which removes a common SPCB / EIA reviewer query.

Reports built for SPCB / MoEFCC submission

Structured for direct attachment to consent applications and EIA reports, with the NAAQS 2009 comparison table, wind-rose interpretation, and accreditation reference included.

Arbro Group analytical heritage

Established analytical heritage through the Arbro Group (Arbro Lab since 1990, Auriga Research since 2007), with NABL ISO/IEC 17025 accreditation — the audit trail EHS managers and EIA consultants look for in an environmental monitoring partner.

Related Services

Frequently Asked Questions

What pollutants are covered under ambient air quality monitoring?

Our ambient air quality monitoring covers all 12 criteria pollutants under NAAQS 2009 (notified 18 November 2009): PM2.5, PM10, SO2, NO2, CO, O3, lead, ammonia, benzene, benzo(a)pyrene, arsenic, and nickel. For industrial EIA studies we additionally monitor VOCs (volatile organic compounds), H2S, and site-specific pollutants based on the nature of the industrial process. On request we also benchmark results against the WHO Air Quality Guidelines 2021 for multinational clients and EIA consultants who need the international reference alongside the Indian standard.

Which Auriga lab performs air quality monitoring?

Ambient air quality monitoring is conducted by our Bahadurgarh Environmental & Industrial Monitoring Laboratory (NABL TC-7710), Auriga's primary environmental monitoring facility. Its NABL ISO/IEC 17025:2017 scope explicitly covers the Chemical — Environment & Pollution discipline (around 80 parameters spanning ambient air, water, soil, and effluent) plus site / field testing, with CPCB-aligned methods for NAAQS 2009 compliance, EIA baseline studies, and consent-to-operate monitoring. Field teams mobilise from Bahadurgarh to your site for sampling and the analysis is completed at the same accredited lab.

What are the NAAQS 2009 standards and when were they notified?

The National Ambient Air Quality Standards (NAAQS) currently in force in India were notified on 18 November 2009 by the Central Pollution Control Board (CPCB) under the Air (Prevention and Control of Pollution) Act, superseding the 1994 standards. NAAQS 2009 prescribes limits for 12 criteria pollutants across industrial, residential, and ecologically sensitive area categories, with both annual and 24-hour averaging periods for most parameters. Our reports compare your measured concentrations directly against the applicable NAAQS 2009 category limit, and — where requested — against the WHO Air Quality Guidelines 2021.

How is ambient air quality sampling conducted in the field?

We deploy high-volume respirable dust samplers and fine-particulate samplers for PM10 and PM2.5 collection on pre-weighed filters. Gaseous pollutants are sampled using impingers with specific absorbing solutions or continuous analysers. Sampling is performed over the NAAQS-prescribed 24-hour averaging period at locations determined per CPCB siting criteria — upwind, downwind, and at sensitive receptors — with concurrent meteorological data (wind speed, direction, temperature) for wind-rose interpretation.

What is the turnaround time for ambient air quality monitoring reports?

Field sampling for a single monitoring location takes 24–48 hours per session (driven by the 24-hour NAAQS averaging requirement). Laboratory analysis of collected samples takes 7–10 business days. A complete ambient air quality monitoring report — including data analysis, comparison with NAAQS 2009, wind-rose interpretation, and (on request) WHO AQG 2021 benchmarking — is delivered within 12–15 business days of field sampling completion. Expedited reporting is available for urgent compliance submissions.

How many monitoring locations and what duration does an EIA baseline study require?

For an EIA baseline air-quality study, the EIA Notification 2006 and the relevant sector guidance typically require monitoring across one full season (excluding the monsoon) — usually 8 to 12 weeks — at a network of locations selected to represent the core and buffer zones around the project site (commonly 8 locations, adjusted for project size and terrain). Each location is monitored on the CPCB-prescribed frequency (typically twice weekly per pollutant). Confirm the exact network design and duration with your SPOC and EIA consultant, since the requirement scales with project category and the Terms of Reference issued by the appraisal committee.

Are Auriga air quality reports accepted by SPCB and MoEFCC for consent and clearance?

Yes. Because monitoring is performed under the Bahadurgarh lab's NABL TC-7710 accreditation using CPCB-aligned methods, the reports are accepted by State Pollution Control Boards (SPCBs) for consent-to-operate and consent-to-establish, by MoEFCC and SEIAA for environmental clearance and EIA submissions, and by EIA consultants assembling baseline and post-project monitoring datasets. Reports are formatted for direct attachment to the consent application or EIA report, with the NAAQS 2009 comparison table and accreditation reference included.

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