Lowering of groundwater according to soil report - Your experiences?

... swim away and now there is an attempt to really squeeze the lemon press on those who are still building despite the high price level.

That is what I have occasionally expressed here in the forum, that I simply do not think the high prices are justified. I am happy for you that you have had these experiences and can now do a lot yourself with friends. I wish you much success and especially enjoyment in doing so.

It is what I have occasionally expressed here in the forum, that I simply do not think the high prices are justified. I am happy for you that you have had these experiences and can now do a lot with buddies yourself. I wish you much success and especially fun with it.

I just tried to follow the prices in the offer by phone and understand why the system is hopelessly oversized, but the vague answers only strengthened my thinking and hit the nail on the head with what you say. It is high time that the market is "grounded" again. Thank you, I am all the more looking forward to what is coming just now. For all those who want to dig up this thread in the future, I would like to repeat something that I was already convinced of anyway and now have in black and white: The prices charged for providing pumps, settling tanks, and hoses, etc. are even above the prices for buying these devices. Imagine going to a car rental and paying €45,000 for a mid-size car for a rental period of 4 weeks. I am speechless.

You wrote that at another construction site the water is currently being lowered. Take another close look at it with your current knowledge. Maybe you can estimate the amount of water, how many liters between 2 switch-on points in the sand container etc.?

You wrote that at another construction site the water is currently being lowered. Take another close look at it with your current level of knowledge. Maybe you can estimate the amount of water, how many liters are between 2 activation points in the sand container, etc.?

I had an in-depth conversation with the excavator operator. Since the excavation pit is enclosed by a sheet pile wall, this unfortunately has no relevance for me in terms of quantity. What was important, however, is that the groundwater was encountered 2.5m below ground level. So again, there is an agreement with my data. The water was pushing up through the excavation pit from below, but he said ultimately it is only a matter of time until this pressure decreases somewhat. The positive thing is that the aquifer is only about 2.7m thick. That is the water column between the impermeable layer and the top of the groundwater level. It could have been 5 or 10m as well. Then the situation would look completely different.

Update from 13.05.2022:

This morning I received a call from the environmental office regarding my application and a related query. After clarifying this, they told me that everything looks good and that the (positive) notice will be sent to me by mail in the next few days. Great.

A note about a separate application regarding the crossing of public traffic routes led me into a conversation with an employee of the traffic office. The result is that I have already registered for an online seminar to obtain the MVAS. This is a kind of certificate of expertise for the common rules of traffic safety obligations. This certificate is a mandatory document in the application. Normally, almost all construction companies or the foremen possess this certificate. It costs about 180€ and a Saturday of free time. Afterwards, the 5-page application along with the traffic sign and rule plan will be sent to the traffic office.

Once this is done, all formal hurdles are first cleared and it goes into the ordering of the relevant components for the system. I will provide a detailed list for this soon.

Update from 02.06.2022

The notification arrived this week. This means the water management is finally approved. The conditions for this are quite limited (e.g. max. particle size/amount allowed to enter the sewage system, etc.). The cost for the notification was "only" just over €300, whereas we had expected around €1,000. So a reason to be happy in between :)
The equipment is now almost all procured, and with that, the basement is filling up, which ideally should soon be emptied for the demolition.

In the meantime, I also attended a Saturday seminar to obtain the certificate for the so-called "Responsible person for traffic safety at work sites in public traffic areas" (~€180). This is required when, for example, applying for a road closure or excavation work on public ground with the city/municipality – here with us called "application for traffic regulation order." Since we have to cross the pedestrian and bike path to get to the sewer, a half-side closure is necessary, and therefore a traffic sign plan must be attached to the application. However, since we do not affect traffic lights or motor vehicle traffic, no so-called standard plan was required. By the way, this is subdivided into various standard plans. We also had to attach a site plan and, of course, the application form as well as the obtained certificate.

As with the environmental office, the traffic and civil engineering office was very surprised that suddenly the client is taking care of everything themselves. Therefore, there will soon be an on-site appointment to precisely coordinate the civil engineering (very manageable) and the traffic regulation. Civil engineering on public ground may only be carried out by companies that are listed in a special register by the city. This is mainly to ensure certain standards are met and liability is clearly defined. But I think we can manage that too and find a solution together with which everyone can save face.