Comprehensive Site Mapping and Analytical Assessment Report Detailed Design, Technical Definition of Works, and Supporting
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Comprehensive site mapping and analytical assessment report Detailed Design, Technical Definition of Works, and Supporting Assessments/Studies required for the Removal of POPs Pesticides and Recovery of Associated Contaminated Soil along with Site Cleanup, Stabilization, Containment, and Monitoring applied to the Nubarashen Burial Site (Yerevan, Armenia) December 2017 Nubarashen Burial Site Comprehensive Site Mapping and Analytical Assessment Report Contractor: DEKONTA, a.s. Seat: Dretovice 109, 273 42 Stehelceves, Czech Republic Address: Volutova 2523, 158 00 Praha 5 Phone: + 420 235 522 252-3 Fax: + 420 235 522 254 E-mail: [email protected] Internet: www.dekonta.cz Contact Mr. Vojtech Musil persons: Phone: + 420 724 047 927 E-mail: [email protected] Client: United Nations Development Programme Address: 14 Petros Adamyan str. Yerevan 0010, Armenia Contact person: Ms. Gayane Gharagebakyan, [email protected], +37491 490 243 UNDP Project Coordinator Project: Comprehensive Site Mapping and Analytical Assessment Report Project title: Detailed Design, Technical Definition of Works, and Supporting Assessments/Studies required for the Removal of POPs Pesticides and Recovery of Associated Contaminated Soil along with Site Cleanup, Stabilization, Containment, and Monitoring applied to the Nubarashen Burial Site (Yerevan, Armenia) Report: FINAL Completed by: Mr. Prokop Barson Mr. Michal Černý Mr. Petr Lacina Mr. Otakar Pazdírek Mr. Marek Polák Mr. Boris Urbánek Mr. Adam Zapletal Reviewed and Mr. Jan Vaněk approved by: Head of Remediation and Environmental Projects Division Member of the Board of Directors Date: December 24, 2017 Copy No. : 1 2 3 Nubarashen Burial Site Comprehensive Site Mapping and Analytical Assessment Report CONTENTS Executive Summary ................................................................................................................. 1 1. Introduction ...................................................................................................................... 10 2. Data on the Area ............................................................................................................... 10 2.1 Geographic Delineation of the Area ............................................................................. 10 2.2 Existing and Planned Land Use .................................................................................... 11 2.3 Basic Characterization of the Area Inhabitation .......................................................... 13 2.4 Relations of Property Rights ........................................................................................ 14 2.5 Geomorphological and Climatic Conditions ................................................................ 14 2.6 Geological Conditions .................................................................................................. 17 2.6.1 Pre-Quaternary Development ................................................................................ 17 2.6.2 Quaternary Development ...................................................................................... 17 2.6.3 Tectonics ............................................................................................................... 18 2.6.4 Seismic Activity in the Area ................................................................................. 18 2.7 Hydrogeological Conditions ......................................................................................... 20 2.8 Hydrological Conditions .............................................................................................. 20 3. The Present State of Exploration of the Area ................................................................ 21 Assessing the Discharge of Contaminants from the Nubarashen Toxic Chemicals Repository Site (2010) ........................................................................................... 21 Site Assessment and Feasibility study of the Nubarashen Burial Site of Obsolete Banned Pesticides in Nubarashen, Armenia, Contract No. ARM/01/2013, OSCE, TAUW (2013) ........................................................................................... 22 Strengthening National Capacities on Comprehensive Chemicals (Persistent Organic Pollutants) Contaminated Site Assessment in Armenia, Analytical Report on Sampling on Nubarashen Site, Tranfer of Czech Knowledge, GEOtest (2013) ... 24 3.1 Overview of Contamination Sources............................................................................ 25 4. Current Survey Work ...................................................................................................... 26 4.1 The Methodology and Scope of Survey and Analytical Work..................................... 26 4.1.1 RTG Spectrometry ................................................................................................ 26 4.1.2 Drilling and Excavatory Works ............................................................................. 28 4.1.3 Sampling and Analytics of Soil Samples .............................................................. 29 4.1.4 Engineering Geology ............................................................................................. 32 4.1.5 Geophysical Measurements ................................................................................... 33 4.1.6 Geodesy ................................................................................................................. 37 4.2 Results of Survey Work................................................................................................ 39 4.2.1 Geological Conditions of the Assessed Area ........................................................ 39 4.2.2 Hydrogeological Conditions of the Assessed Area ............................................... 42 4.2.3 RTG Spectrometry - Evaluation of Surface Contamination ................................. 42 4.2.4 RTG Spectrometry – Pure Pesticides .................................................................... 43 4.2.5 Evaluation of Chemical Analyses of Soil Samples ............................................... 45 Nubarashen Burial Site Comprehensive Site Mapping and Analytical Assessment Report 4.2.6 Correlation of RTG Spectrometry and Chemical Analyses .................................. 48 4.2.7 Evaluation of Soil Mechanics Analyses of Soil Samples ...................................... 49 4.2.8 Geotechnical Calculations ..................................................................................... 50 4.2.9 Evaluation of Geophysical Measurements ............................................................ 53 4.2.10 Techological samples ............................................................................................ 55 4.3 Summary of the Extent and Degree of Contamination ................................................ 56 4.3.1 Category 1 – Pure Pesticides ................................................................................. 58 4.3.2 Category 2 – High Contamination ......................................................................... 58 4.3.3 Category 3 – Low Contamination ......................................................................... 58 4.3.4 Category 4 – Contaminated Construction Material ............................................... 59 4.4 The Balance of Contamination ..................................................................................... 59 4.4.1 Methodology of calculation ................................................................................... 60 4.5 Approximate Distribution of the Main Types of POPs in the Landfill and Its Surroundings .................................................................................................................................. 64 4.6 Migration of Contamination ......................................................................................... 66 4.7 Constraints and Uncertainties ....................................................................................... 67 5. Conclusions and Recommendations................................................................................ 68 Nubarashen Burial Site Comprehensive Site Mapping and Analytical Assessment Report LIST OF ANNEXES 1. Graphic Annexes Scale 1.1 General Situation of the Site 1 : 3 000 1.2 Detailed Situation of the Site 1 : 500 1.3 Geological Map 1 : 1 500 1.4 Location of Engineering-Geological Exploratory Objects 1 : 500 1.5 Location of Contamination Exploratory Objects 1 : 500 1.6 Location of Surface Contamination Exploratory Objects (X-ray Measurements) 1 : 1 000 1.7 Location of Geophysical Measurements 1 : 500 1.8 Geological Profiles of Boreholes and Pits 1 : 50 1.9 Contour map of Apparent Conductivity 1 : 500 1.10 Contour map of true Conductivity 1 : 500 1.11 Vertical sections of true Conductivity 1 : 500 1.12 Map of Surface Contamination (X-Ray Measurements) 1 : 500 1.13 Map of Subsurface Contamination - Actual Investigation 1 : 500 1.14 Photo Documentation of probes 2. Textual Annexes 2.1 Geological Documentation of Boreholes, Probes and Pits 2.2 Sampling Plan 2.3 Protocols of Chemical Laboratories Samples Collection 2.4 Laboratory Protocols of Chemical Analyses 2.5 Protocols of X-Ray Measurements 2.6 Laboratory Protocols of Soil Mechanics Analyses 2.7 Overview of Laboratory Analyses Results 2.8 Overview of Samples and Laboratory Tests 2.9 Report on Geotechnical Calculations 2.10 Report on Geodetical Survey 2.11 Documentation of Engineering-Geological Mapping Points 2.12 Permition for Site Investigation