Hydrogeological survey, geological survey, water analysis, water treatment, water purification

The hydrogeological survey includes exploration and implementation work, projects, assessments and evaluations in various areas of the environment associated with underground water.

This especially includes the search for groundwater sources for wells, hydrogeological survey of site contamination (old environmental burdens, illegal dumping sites, brownfields), hydrogeological survey of public burial grounds, groundwater level monitoring systems, hydrogeological and absorption survey for building construction and the feasibility of the construction of domestic wastewater treatment plants and root zone wastewater treatment plants within sites.

SEARCH FOR GROUNDWATER SOURCES, EXPLORATION BOREHOLES

The search for groundwater sources is divided into the following stages:

Designing

Design work consisting of the search for the necessary information regarding the location from maps and archives, searching for groundwater within the site and subsequent project processing.

Field reconnaissance and borehole locating

The field reconnaissance and borehole locating are necessary to get the hydrogeologist introduced to the terrain. We are able to find the most appropriate location for the borehole (well) according to the principles of ČSN 75 5111 within 1 week following the inquiry. If a new building is planned, it is best to first find an ideal location for a well, and then set the position of the building accordingly. Proceeding the other way round can be very complicated.

We strongly recommend having the groundwater source located and the well completed prior to the actual commencement of the building work. This has the following benefits:

• You avoid the risk of having your house and building site damaged by the drilling equipment used
• The access to the site for the technology is not complicated
• Independent source of water for the construction process
• Financial savings on providing a water connection, which is not needed
• No water tariff

Notification of exploratory borehole to authorities

At least 15 days before the commencement of the drilling work, we notify the relevant local authorities. If an exploratory borehole deeper than 30 metres is made, the project will be submitted to the relevant Regional Office, 30 days prior to the commencement of the work.

HYDROGEOLOGICAL SURVEY OF SITE POLLUTION

Old environmental burdens

Contaminated soil, geological environment and groundwater (old environmental burdens) are a major problem in the area of environmental protection. Environmental burden is in many cases the source of unacceptable risks to human health, groundwater and surface water, natural resources and other environmental components. The hydrogeological survey will identify the intensity of the pollution of the geological environment and especially groundwater. We analyse the collected groundwater samples to monitor quality parameters. We carry out physical, chemical and microbiological analyses in accredited laboratories.

Illegal dumping sites

Illegal dumping sites are one of the major areas of old environmental burdens, with a significant influence on the quality of groundwater. In accordance with the applicable legislation, we carry out hydrogeological surveys of the potential contamination of groundwater, remediation of pollution and the site preparation for further use. This also includes the development of permanent groundwater surface level and quality monitoring systems.

Brownfields

Brownfields are generally the legacy of the industrial past, mostly constituted by industrial sites, abandoned farms, unused railway structures, former military premises and or public facilities that are no longer used. The existence of brownfields leads to significant economic losses; they can be burdensome and a source of unacceptable risks to the public health and the environment, especially groundwater.

ATE CR, a.s. is capable of dealing with this issue. We will issue a revitalization project quantifying the costs of its implementation, for an application for financial support from the EU resources.

We have experts of all professions needed to determine the degree of area contamination and its liquidation, including the area preparation for further reasonable use. The degree of environmental contamination is also determined on the basis of a thorough hydrogeological survey.

HYDROGEOLOGICAL SURVEY OF BURIAL GROUNDS

We carry out surveys of old and new public burial grounds pursuant to Act No. 256/2001 Coll., on funeral services. Hydrogeological surveys are carried out to assess the geological and hydrogeological conditions of the site, determination of the maximum depth of burial and decomposition times, together with a proposal and implementation of measures to decrease groundwater levels as required.

HYDROGEOLOGICAL SURVEY FOR BUILDING CONSTRUCTION

We carry out hydrogeological surveys of planned construction sites, to determine the groundwater levels. This is also associated with the possible need to pump groundwater from the foundation pit. Hydrogeological surveys are closely related with absorption surveys, verifying the absorption situation within the location, or in other words suitability of the rock under soft surfaces to absorb rainwater from hard surfaces, also in the event of rainstorms.

FEASIBILITY OF THE CONSTRUCTION OF A DOMESTIC WASTEWATER TREATMENT PLANT AND ROOT ZONE WASTEWATER TREATMENT PLANT WITHIN A SITE

Within the scope of our hydrogeological survey services, we also carry out assessments from the perspective of the suitability for domestic wastewater treatment plants and root zone wastewater treatment plants. Within sites where domestic wastewater treatment plants and root zone wastewater treatment plants have been approved for use with family homes, we also examine the potential absorption quantities and the quality of the treated water. The absorption places are selected so as to avoid any contamination of the existing groundwater sources, both within the site and in the vicinity.