ISPU · KLHK

Ambient air quality monitoring,
ISPU-grade across your estate.

A three-stage program: dispersion modeling baseline → multi-station AQMS deployment → live Air Digital Twin. Your operators and the regulator see pollutant dispersion in near real-time.

Under PermenLHK No. 15/2019, Indonesian industrial estates must monitor ambient air quality at multiple locations, not just one. Yet most estates rely on a single AQMS station or periodic manual sampling that can't capture spatial variability or predict dispersion patterns.

  • Spatial gap A single station covers a tiny footprint. Pollutant concentrations vary dramatically across an estate depending on wind, topography, and point sources.
  • No forecasting Manual sampling gives you a snapshot, not a prediction. By the time you detect a problem, the community impact window has passed.
  • Regulatory exposure KLHK can challenge a single-station claim. Multi-station data with dispersion modeling is the defensible standard.

"Your estate is 500 hectares. One station is a pinprick."

ISPU (Indeks Standar Pencemaran Udara) is Indonesia's ambient air quality index, calculated from PM2.5, PM10, SO₂, NO₂, O₃, and CO concentrations. Industrial estates are required to monitor these parameters at multiple locations, not just a single reference point.

MUSA's Air Quality Monitoring is a three-stage program. First, we run a dispersion modeling study using Gaussian plume models and local meteorological data to establish baselines and identify optimal AQMS station locations. Second, we install a network of reference-grade or beta-attenuation AQMS stations across the estate. Third, all feeds converge into MUSA View as a live Air Digital Twin 3D dispersion maps, wind roses, hotspot identification, and automated ISPU reporting.

The result: you don't just know what's happening right now. You can predict what's coming, and prove compliance at any point in time.

What we measure

Every ISPU parameter, plus the meteorology that drives it.

PM2.5

Fine particulate matter, the most health-critical ISPU parameter. Beta-attenuation or oscillating microbalance.

PM10

Coarse particulate matter, resuspended dust, construction fugitives, stack fallout.

SO₂

Sulfur dioxide, from high-sulfur fuel combustion. uv fluorescence analyser.

NO₂

Nitrogen dioxide, traffic and combustion indicator. Chemiluminescence detection.

O₃

Ground-level ozone, photochemical product of NOₓ and VOCs. UV photometry.

CO

Carbon monoxide, incomplete combustion indicator. Gas filter correlation IR.

Wind speed & direction

Dispersion driver, essential for interpreting every concentration reading.

Temperature & humidity

Atmospheric conditions that affect pollutant chemistry and sensor performance.

Barometric pressure

Pressure corrections for standard-condition concentration reporting.

Benefits

Multi-station compliance with predictive insight.

ISPU compliance at multiple stations

Spatial coverage across your estate, not just a single reference point.

Dispersion modeling

Predict pollutant impacts before they happen, scenario planning, not just observation.

Air Digital Twin

3D visualization of pollutant dispersion across your estate in near real-time.

Early warning

Get alerted before air quality degrades, not after the monthly review.

Multi-station, one console

Rollup view across all AQMS nodes in MUSA View, estate-wide in one screen.

Sustainability report ready

Ambient air data feeds directly into your GRI and PROPER submission.

Delivered on the MUSA pipeline

Air Quality Monitoring is most prominent at the Warehouse and Platform layers.

01 · SensorAQMS stations
02 · EdgeMUSA Integrator
03 · WarehouseData Management
04 · PlatformMUSA View
ReportingISPU · KLHK
05 · AgentMUSA Assistant
Features

What's actually in the program.

Three-stage deployment program

Dispersion modeling study → AQMS network design and install → Air Digital Twin activation. Each stage gates the next, so every station earns its location and every model produces a justifiable result.

  • Gaussian plume dispersion modeling with local met data
  • Optimized AQMS station siting across the estate
  • Reference-grade and beta-attenuation options
AQMS station deployment
Multi-station AQMS network · estate-wide coverage

Multi-parameter AQMS stations

Reference-grade or beta-attenuation monitors for all six ISPU parameters plus meteorological sensors. Each station is a self-contained node with its own calibration, power, and communications.

  • PM2.5 / PM10, beta-attenuation or TEOM
  • SO₂, NO₂, O₃, CO, standard reference methods
  • Met station, wind, temperature, humidity, pressure
Air quality monitoring equipment
Reference-grade AQMS station · 6-parameter

Air Digital Twin in MUSA View

3D dispersion maps, wind roses, hotspot identification, and time-lapse playback. Every AQMS station feeds a unified spatial model, so you see not just what each station reads, but what's happening between them.

  • 3D pollutant concentration surface across the estate
  • Wind rose overlays and dispersion plume animation
  • Hotspot identification and source attribution
Air Digital Twin dashboard
MUSA View · Air Digital Twin · 3D dispersion

Automated ISPU reporting

ISPU index calculated automatically from your AQMS data per the KLHK methodology. Daily, monthly, and annual summaries generated and formatted for regulatory submission, no manual spreadsheet work.

  • ISPU index per station and estate-wide aggregate
  • Daily, monthly, annual summary reports
  • Regulatory-ready formatting for KLHK submission
ISPU reporting dashboard
ISPU index · automated daily report
Regulatory context

Why multi-station ISPU monitoring matters.

PermenLHK 15/2019

Ambient Air Quality Standards require monitoring of PM2.5, PM10, SO₂, NO₂, O₃, and CO. Industrial estates must demonstrate compliance at multiple locations across their footprint.

ISPU index calculation

The ISPU index is calculated from 5 pollutant concentrations using a piecewise linear function. The highest sub-index becomes the reported ISPU value for that station and time period.

AQMS station siting guidelines

KLHK guidelines specify minimum distances from obstructions, representative coverage radii, and co-location requirements. Our dispersion modeling ensures every station meets siting criteria.

PROPER green rating

PROPER (Program for Pollution Control, Evaluation and Rating) requires demonstrated ambient air performance. Multi-station AQMS data with dispersion modeling is the strongest evidence package.

Process

From baseline study to live Digital Twin.

01

Dispersion study & baseline

Gaussian plume modeling using local meteorological data, terrain, and source inventory. Output: baseline concentration map and optimal AQMS station locations.

02

AQMS network design & install

Station specification, procurement, shelter construction, and installation at model-recommended sites. Power, comms, and initial calibration.

03

Commission & ISPU registration

Parallel reference method validation, ISPU index verification, KLHK registration. Go-live sign-off with first automated report.

04

Operate & refine Digital Twin

Live data, automated ISPU reports, scheduled maintenance, model calibration against observed data. Quarterly performance reviews and annual compliance reconciliation.

Who it's for

Industries where ambient air quality is a priority.

Industrial Estates

Kawasan · multi-tenant

Power Plants

Coal, gas, geothermal

Petrochemicals

Refinery, cracker, storage

Cement & Mining

Kiln, crusher, haul road

Ports & Logistics

Terminal, fleet, warehousing

Commercial Real Estate

Mixed-use, campus, CBD

Built with

Related products in the MUSA stack.

Other solutions

Compliance across every parameter.

Get started

Tell us about your estate footprint.

A site map and your source inventory is enough to start the dispersion study. We'll come back with station locations, a deployment plan, and budget, before any hardware is ordered.