The project is in two parts: construction of the new wastewater tunnel and expansion of the Henriksdal treatment plant and the Sickla plant.
Both building of the tunnel and expansion of the treatment plant will be heard and sometimes felt by people living nearby.
Structure-borne noise will be caused by the drilling that we will be carrying out in the rock. Although it will not be possible to hear the drilling at that distance, the noise from it will propagate in the rock and cause sound waves that spread to the surface. People may perceive structure-borne noise to vibrate and be monotonous and muffled. The structure-borne noise will decline gradually as the various tunnel fronts move forward by about 10-20 metres a week.
Blasting noise is caused by explosions in the rock. These noises are short-lived and can be heard on the surface as a muffled explosion from inside the rock. We will be blasting on a number of different fronts simultaneously, and the loudest noise will be heard above the tunnel fronts. The noise and vibrations fron the blastings can sometimes travel far from the blasting site.
When drilling and blasting are complete, stone will need to be knocked out with hammers and then the rock spoil has to be loaded. People living nearby will not hear the loading of rock spoil, and this will take place at some point during our planned working hours of 7am to 10pm.
For airborne noise, the Swedish Environmental Protection Agency's guidelines on noise from construction sites apply (NFS 2004: 15). According to them, the disturbances from the workplace must not exceed
For structure borne noise (drilling noise), the following values apply according to our permission:
* dBA values are equivalent values, ie mean values during the period being measured.
If you feel that you are disturbed by noise that exceeds the guidelines, you should contact the project. In some cases, we may offer replacement accommodation during the period you are disturbed.
You can receive notifications via text message or e-mail about 30 minutes before we blast.
If you are disturbed by our work, please contact us. We will then come out to you and make noise measurements on site.
The basic rule is that residents who are disturbed by more than 45 dBA indoors for more than a week are offered replacement housing or the opportunity for temporary stay during the day. Even you who, for example, work at home or have a job that makes you need to sleep during the day, you may be entitled.
Substitute accommodation can be apartment hotels or other apartments.
We are rebuilding and modernizing Henriksdal's wastewater treatment plant. We are rebuilding the treatment process with new technology, and we are also building a new sludge plant in Henriksdalsberget.
On Henriksdalsberget there are many homes that will be affected throughout the construction period. We have permission to carry out disruptive work according to the Swedish Environmental Protection Agency's guidelines during non-holiday weekdays from 7 am to 10 pm.
Some work steps mean that we drill and blast in the rock. The drillings cause structure borne noise that spreads through the rock to the homes that are closest to the place where the work is performed.
Find out more about how Henriksdal residents will be affected by the blasting operations.
We are expanding and modernizing the Sickla plant under Hammarbybacken. People living near the facility, especially in Hammarby Sjöstad and Hammarbyhöjden will be affected by our work. We have permission to carry out disruptive work according to the Swedish Environmental Protection Agency's guidelines during non-holiday weekdays from 7 am to 10 pm.
The work will continue until 2026, but the most disruptive work, ie the blasting works, will last for about 3 years. After that, concrete work begins.
The sewer tunnel is being built far below the ground at a speed of 10-20 meters a week. Structure borne noise from drilling in the rock is estimated to be disturbing for a limited period of time while the tunnel front is just below a certain area. Thereafter, the tunnel front will move forward and you will no longer be affected by these structure borne noises.
Blastings, which can be felt far from the blasting site, can be experienced as disturbing for a longer period, depending on how close to the blasting site you live.
You can contact us directly if you have any views on our work when we are blasting the tunnel or blasting in Henriksdal.
You can reach us on 08 522 128 80 or send an email to framtidensavloppsrening@svoa.se
