According to Eskilstuna Municipality, the stricter regulation means that emissions of methylene chloride from production facilities and gas recovery systems may amount to a maximum of 120 tons per installed production line per year. The total emissions from the facility may be a maximum of 720 tons per year. Emissions must be controlled through mass balance calculations.
The company must notify the community building committee when a new production line is installed. In practice, this means that if Senior builds two production lines as planned during the trial period, the company will be allowed to emit at most 240 tons of methylene chloride per year. The previous provisional limit allowed 900 tons per year regardless of the number of lines.
The trial period applies for two years from when methylene chloride begins to be used in production, which has not yet happened. New in the condition is that emissions must be controlled with mass balance calculations. This means that Senior needs to show where all methylene chloride goes, from when the substance enters the process until it leaves as emissions, product, or waste.
The exact start date of the trial period is not specified, and it is unclear when methylene chloride will begin to be used in production. The regulations aim to tighten oversight of industrial emissions in the area.