Ready-mix concrete and block factories are a core part of the construction sector, but they are among the activities that attract the most neighbor complaints and inspection findings: dust from sand and aggregate stockpiles and cement loading, mixer wash water laden with cement, and constant truck traffic. The environmental permit for a concrete or block factory therefore needs a file that addresses these impacts clearly from the design stage. This article explains the environmental path and the main conditions under the Environment Law's regulations.
Main environmental impacts
| Source | Impact |
|---|---|
| Sand and aggregate storage | Wind-blown dust and dust from equipment movement |
| Cement unloading and silo filling | Fine dust from vents |
| Batching plant | Dust and noise |
| Washing mixers and trucks | Alkaline water carrying cement and sediment |
| Truck traffic | Road dust, noise and debris on public roads |
| Returned concrete and broken blocks | Large volumes of solid waste |
The legal path
The Environmental Permits Regulation applies to the factory as an industrial activity: a classification form, a construction permit before building, then an operating permit before production. The National Center for Environmental Compliance (NCEC) sets the category based on production capacity, location and surroundings. A factory within or 500 meters or less from sensitive receptors or areas needs a detailed EIA. Increasing capacity or adding a block line to a concrete plant changes the size or type of activity and needs a new operating permit before it happens.
Dust: Air Quality Regulation requirements
Article 7 of the Air Quality Regulation requires anyone transporting, loading or unloading materials or soil to take precautions against dispersion, including covering, spraying or enclosing airborne-prone materials, using vehicles that prevent dust emissions, and stabilizing haul routes. In practice at the factory:
- Side walls and covers for sand and aggregate stockpiles, sprayed on windy days.
- Filters on cement silo vents, maintained with documented replacement.
- Enclosing the batching plant and loading points.
- Paving or spraying internal roads, and washing truck wheels before exit.
- The regulation also requires regular maintenance of pollution controls and prevention of any emission above the standards.
Mixer wash water
The Water Media Regulation defines wastewater as water whose properties have changed through industrial use, and mixer wash water is a clear example. The usual solution is a series of settling basins to separate sediment, with the water reused in production or washing. Dumping untreated wastewater into any environmental medium, such as neighboring land or the street, is among the violations heard by the competent court under the Penalties Regulation. Dried sediment is managed as solid waste through licensed parties.
Concrete waste
Returned concrete and broken blocks arrive in large volumes every day. The Waste Management Law puts recycling and resource recovery before safe disposal and prohibits leaving or dumping waste outside designated places. So: reuse what you can (such as crushing broken blocks for reuse according to specifications), and send the rest by licensed carrier to approved sites with a transport document, never onto vacant land.
Noise
Mixers, compressors, block machines and trucks are noise sources. The Noise Regulation sets 70 dB by day and 65 at night at the boundary for industrial areas, with night from 8 p.m. to 7 a.m. A factory operating at night near residential areas is prone to complaints, and after a complaint NCEC may require noise modeling and a reduction plan.
Most common inspection findings at concrete plants
- Exposed stockpiles without spraying or covering.
- Damaged or missing silo filters.
- Wash water running outside the plant or onto neighboring land.
- Returned concrete piling up without management or documentation.
- Increased production or new lines without amending the permit.
Frequently Asked Questions about Concrete and Block Factories
Does a small block factory need an environmental permit?
Yes. It is an industrial activity, and NCEC sets its category and requirements after reviewing the classification form based on capacity and location.
How should mixer wash water be handled?
With settling basins and water reuse, never discharging it untreated into any environmental medium, and managing dried sediment through licensed parties.
What is the most important measure against dust complaints?
Covering and spraying stockpiles, silo filters, stabilized internal roads and covered trucks, as the Air Quality Regulation requires.
Can broken blocks be reused?
Yes, according to specifications and conditions; the law puts recycling and reuse before disposal, and the rest goes to an approved site by licensed carrier.
How Abak Green helps
We manage the environmental permit file for your concrete or block factory, prepare the environmental management plan with dust, wash water, waste and noise measures, set up records, and follow compliance and inspection findings. Contact us about your factory.
