Mantelverordnung: introduction of EBV, adaptation of BBodSchV, DepV and GewAbfV

New Mantelverordnung: introduction of EBV and adaptation of BBodSchV, DepV and GewAbfV

Posted on 04 October 2022

In July 2021, the legislature published the new Mantelverordnung (“Regulation on the Introduction of a Substitute Construction Materials Regulation, on the Revision of the Federal Soil Protection and Contaminated Sites Regulation and on the Amendment of the Landfill Ordinance and the Commercial Waste Ordinance”).

Although the regulations of the Mantelverordnung will only come into force on 01 August 2023, the new requirements may already have to be taken into account in current tenders and in construction projects whose execution begins before this date. Among other things, the scope of testing (parameters) and testing methods will be changed, so that old analysis results (e.g. according to LAGA M20) will only be comparable to a limited extent.

Classification of mineral waste

Processing of crushed concrete

Substitute Construction Materials Ordinance (EBV)

The most important item is the introduction of the Substitute Building Materials Ordinance (EBV), which for the first time sets out nationwide and legally binding requirements for the production and use of mineral substitute building materials (including recycled building materials from construction and demolition waste, soil and dredged material, gravel for railway tracks). The EBV thus replaces, among others, the LAGA M20 leaflet.

Further information on the new regulations can be found here.

To give you an overview of the most important changes and help you prepare in good time, we have produced a brochure that you can download here:

Brochure on the New Mantelverordnung (German)

LGA Institut für Umweltgeologie und Altlasten GmbH

Christian-Hessel-Str. 1
90427 Nürnberg

Tel.: +49 911 12076 100
Fax: +49 911 12076 110
info@LGA-geo.de
bewerbung@LGA-geo.de

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3D laser scanner measures and visualizes rock cellar in road embankment

3D laser scanner measures and visualizes rock cellar in road embankment

Posted on May 10, 2022.

Determining the exact position of rock cellars or caves in relation to the ground surface requires precise surveying techniques. The smallest angular errors can “warp” the entire model and cause several meters of positional deviation above a certain corridor length, which is an unacceptable inaccuracy, especially for questions concerning building and traffic infrastructure.

With a high-precision survey using a 3D laser scanner, we were once again able to record three rock cellars, whose entrances are located in the street embankment, with centimeter accuracy and visualize them under city ground. Not only the location in relation to the above-ground use (building, open space, traffic area), but also the cover of the cellars could be reliably determined. In addition to the geological recording of the vaults, the cover and its structure is one of the decisive parameters for evaluating the geological stability of the cellars.

3D scan of rock cellars under a building

Monitoring site in one of the rock cellars

However, the all-clear was given for the recently inspected basements. Besides a few structures in need of monitoring, the basements were mostly in good condition. The monitoring program is used to determine whether the monitored structures need to be rehabilitated or technically secured in the long term if their condition deteriorates.

LGA Institut für Umweltgeologie und Altlasten GmbH

Christian-Hessel-Str. 1
90427 Nürnberg

Tel.: +49 911 12076 100
Fax: +49 911 12076 110
info@LGA-geo.de
bewerbung@LGA-geo.de

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Successful participation in various round robin tests

Successful participation in various round robin tests

Posted on 07 March 2022.

The quality of sampling determines the accuracy of expert statements. Errors made here can no longer be cured in the subsequent steps.

For this reason, we attach great importance to quality assurance in our company (more information hier). Interlaboratory tests and comparative measurements are also an important part of this. On the one hand, interlaboratory comparisons offer testing laboratories the opportunity to compare the results of their testing procedures with those of other testing laboratories under standardized conditions. In this way, their own performance can be reliably checked. On the other hand, monitoring authorities use the evaluation of the interlaboratory comparisons to decide on the compliance with qualitative approval requirements of individual testing laboratories. In 2021, we participated in the following round robin tests and comparative measurements:

Zertifikat über Ringuntersuchungen zur Ermittlung von Probenahmeunsicherheit und Umgang mit Messunsicherheit

Sampling on a property contaminated with explosives in Kempten, Germany

Round robin test on explosive residues in soil     The Federal Environment Agency had invited engineering companies to this round robin test in Kempten. A plot of land contaminated by explosives was to be representatively sampled according to the rules of the “art of contaminated sites” (area composite sample of topsoil, effect pathway soil – man). Dr. Kunibert Eberlein and Simon Landgraf from our company were represented.

 

Round robin test for soil sampling from trenches
At this event, organized by the Bavarian State Office for the Environment (LfU), all testing laboratories approved in Bavaria according to §18BBodSchG were present. Both walk-in trenches and non-walk-in trenches (from the excavator shovel) were sampled. Dr. Kunibert Eberlein and Hendrik Belz participated for the LGA..

Sampling from an excavator shovel

Comparative measurement of groundwater sampling from a measuring point
In cooperation with four other offices or laboratories, we organized a comparative measurement at a groundwater measuring point. The analysis results (5 samples each for heavy metals and further inorganic parameters, 10 samples for LHKW), were comprehensively statistically evaluated. Fabian Ziegler, Hendrik Belz and Gerold Neumann participated from our office.

The results of the round robin tests on explosives residues are still pending.
The round robin tests for sampling at accessible and non-accessible excavations will be presented on 30.06.2022 within the framework of the GAB’s contaminated site symposium.
The statistical evaluation of the groundwater sampling was carried out by AIR – Analytik Institut Rietzler GmbH using the round robin evaluation software A45 from AQS Baden-Württemberg. In addition to the standard deviation of the on-site parameters, the zu-scores were determined for the individual samplers for the investigated organic and inorganic parameters. The results were made available to all test participants in a final report.

LGA Institut für Umweltgeologie und Altlasten GmbH

Christian-Hessel-Str. 1
90427 Nürnberg

Tel.: +49 911 12076 100
Fax: +49 911 12076 110
info@LGA-geo.de
bewerbung@LGA-geo.de

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Vortrag bei der DCONex in Essen

Vortrag bei der DCONex in Essen

Verfasst am .

Am 19. und 20. Januar 2022 fand die DCONex, Fachkongress mit begleitender Ausstellung für das Schadstoff-Management, in Essen statt, an der auch Dr. Jürgen Kisskalt und Fabian Ziegler teilnahmen.

Am ersten Veranstaltungstag stellte Herr Dr. Kisskalt die „GVSS – Handlungsempfehlungen zum Umgang mit asbesthaltigen Brandschutzklappen“ dem Fachpublikum vor.

Die Empfehlungen waren von einem Fachausschuss der GVSS unter Beteiligung von drei LGA-Mitarbeitern erarbeitet worden.

Weitere Informationen zum Thema:

„Asbesthaltige Brandschutzklappen – ein Update“

„Frisch veröffentlicht: Handlungsempfehlungen zum Umgang mit asbesthaltigen BSK“

„Brandschutzklappen-Inspektion“

LGA Institut für Umweltgeologie und Altlasten GmbH

Christian-Hessel-Str. 1
D-90427 Nürnberg

Phone:  +49 911 12076 100
Telefax:  +49 911 12076 110
info@LGA-geo.de
bewerbung@LGA-geo.de

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DAkkS supervisory audit confirms the high quality of our sampling

DAkkS supervisory audit confirms the high quality of our sampling

Written on February 05 2022

On October 21, 2021, one of the regular supervisory audits by experts from the DAkkS (German Accreditation Body) took place at our company.

The report now available attests to our staff’s very high level of competence in sampling soil, soil gas, building substances and waste.

Our accreditation according to DIN EN ISO/IEC 17025 as well as our admission as Examination Center according to § 18 BBodSchG are thus confirmed.

Our services around sampling and measurements you will find here.

LGA Institut für Umweltgeologie und Altlasten GmbH

Christian-Hessel-Str. 1
D-90427 Nürnberg

Phone:  +49 911 12076 100
Telefax:  +49 911 12076 110
info@LGA-geo.de
bewerbung@LGA-geo.de

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Rock protection on the B173: Around 340 m of fence, 1,000 rock nails and 3,000 m² of netting

Rock protection on the B173: Around 340 m of fence, 1,000 rock nails and 3,000 m² of netting.

Posted on January 13, 2022.

With more than 5,000 motor vehicles/24 h (census from 2015), the B173 federal road is one of the most important supraregional connecting axes in Upper Franconia. It connects the A 73 freeway near Lichtenfels with the A 9 freeway near Hof, which is accompanied by an intensive traffic volume with an above-average share of heavy traffic..

In order to ensure the safety of road users against geohazards such as rockfall and rock slides, the Bayreuth State Building Authority commissioned LGA IUA GmbH to carry out an assessment of potential danger areas along the B173 southwest of Schwarzenbach am Wald (Frankenwald). The reason for this had been the slipping of a rock package from an embankment in spring 2017. The rock mass came to a standstill behind the guard rail. As a result, the slope was examined and assessed for its rock and boulder fall potential. In addition, the rock-strewn steep slopes above the B173 as well as all rock slopes directly at the roadside in an approx. 2.5 km long road section southwest of Schwarzenbach am Wald were investigated up to and including August 2021, which, on the basis of an orienting site inspection, apparently harbored a high hazard potential.

Strongly loosened rock slope on the B173

Close-up of a fissured block in the steep slope above B173

After detailed terrain investigations, drone flights, evaluations of the digital terrain model and selected rockfall simulations, a total of 27 rock objects were assigned a hazard level > 1, which required short-, medium- or long-term technical protection of the objects, depending on the level.

Following the investigation, the second phase of the project involved the execution planning and tendering of the safety measures. The planned measures include the removal of vegetation whose roots could destabilize the rock slope or tip onto the road due to lack of vitality, the clearing of individual rock objects at risk of falling, and the installation of rockfall protection fences of various energy absorption classes with a total length of approx. 340 meters. In addition, four road embankments will be netted using high-strength mesh (total net area of over 3,000 m²). Over 1,000 rock nails will be installed to secure the nets.

Installation of netting

The contractor for the rock support work with a total contract volume of around €840,000 is Jähnig GmbH from Dorfhain (Osterzgebirge). Holz Prell GmbH Gundlitz from Stammbach was commissioned with the preparation of the total of four construction sites (clearing and clearance work). The local construction supervision is carried out by the LGA expert Simone Pflaum, who was also the project manager during the exploration and planning phase.

When work began on October 25, 2021, the B173 was closed on one side in the active construction area; for a short time, tree felling work led to a full closure of the B173. Snowfall and snow cover in December made the work increasingly difficult. After a 3.5-week winter break, the construction site is expected to restart on January 17, 2022.

Drilling operations in challenging weather conditions

LGA Institut für Umweltgeologie und Altlasten GmbH

Christian-Hessel-Str. 1
D-90427 Nürnberg

Phone:  +49 911 12076 100
Telefax:  +49 911 12076 110
info@LGA-geo.de
bewerbung@LGA-geo.de

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