- Consultation on the impact of the derogation requested by the Republic of Bulgaria, provided for in Directive 2009/28 / EC, authorizing elevated values above 60 Kpa of gas vapor pressure when mixed with bioethanol, on ozone levels on the territory of the Republic of Bulgaria – “Bulgarian Petroleum and Gas Association ASSOCIATION” and NIGG-BAS;
- RESEARCH AND DETERMINATION OF THE LOCATION OF NEW NUCLEAR POWER IN THE KOZLODUY NPP PLACE, SECTION: “Supplementing information on local and regional meteorological characteristics. Clarification of Atomic Dispersion Characteristics” – REL-1000-ST-005-A.
- “Investigation of the site for calibration of compass systems of airplanes type “AIRBUS 320” and “BOEING 737”, 229/19.04.2011, Lufthansa Technique Sofia (participants Assoc. Prof. P. Trifonova and Assist. Prof. M. Metodiev );
- Analysis of seismic hazard for the “Ada Tepe” site: Complex interpretation of anomalous gravitational and geomagnetic field” Sofia, 2012 (participants Assoc. Prof. P. Trifonova and Assist. Prof. M. Metodiev );
- “Investigation and determination of the location for the new nuclear power on the of “NPP Kozloduy” site: Complex analysis of geophysical fields in the regional and the local zone around NPP Kozloduy”. Sofia, 2013 (participants Assoc. Prof. P. Trifonova and Assist. Prof. M. Metodiev);
- “Geophysical analysis of the industrial zone of “Aurubis Bulgaria” , Pirdop: analysis of gravimetric and geomagnetic fields and identification of fault structures according to gravimetric and geomagnetic data”. Sofia, 2014 (participants Assoc. Prof. P. Trifonova and Assist. Prof. M. Metodiev);
- Detailed micro-seismic zoning and determination of predicted seismic characteristics of dump site “Lyuliakovitsa” Part 3.2. Analysis of geophysical conditions in the region. Project № Д-ІІІ-37/12.05.2017 г. “ASAREL-MEDET” LTD – Panagyurishte (participants Assoc. Prof. P. Trifonova and Assist. Prof. M. Metodiev);
- “Field magnetic investigation along profiles on the territory of area “Zheleznik”, municipalities of Kuchevo and Majdanpek, Republic of Serbia”, TERA-SKAUT Ltd., 2017 ( Assist. Prof. М. Metodiev).
- Registration, analysis, processing and interpretation of seismological information from the Local Seismic Network (LSM) in the area of Kozloduy – running/current;
- Registration, analysis, processing and interpretation of seismological information from Local Seismological Network (LSM) in the region of Provadia – – running/current;
- Detailed microseismic zoning and determination of the design seismic characteristics of the “Liulyakovitsa” tailings pond – 2017-2018;
- Assessment and analysis of seismicity in the region of the industrial site of “AURUBIS BULGARIA” Pirdop – 2014.
- Processing and analysis of earthquake records for the design of quay wall in the region of Varna town – 2016;
- Verification of the results and assessments obtained by detailed microseismic zoning and determination of the design seismic characteristics of “Liulyakovitsa” tailings pond – 2014-2015;
- Detailed microseismic zoning and determination of the design seismic characteristics of “Liulyakovitsa” tailings pond – 2017-2018.
- Provision of data from reference stations;
- Monitoring the stability of all permanent stations of NIGGG and NAVITEC;
- Provide and analyze of sea level data. BMF PORT BURGAS LTD.