Patos-Marinza Development Project. Well 5761 ERP Contamination Assessment Report

Transcription

1 Patos-arinza Development Project Well 5761 ERP Contamination Assessment Report ay 2015

2 1 Executive Summary Environmental Contamination Assessment Bankers Petroleum Albania Limited (BPAL) has prepared this document in support of the company s reclamation action plan following the incident at (P29A lease pad) on 1st April 2015 This document is structured so as to provide an evidence based overview of the environmental condition of the area surrounding Well The assessment report considers air, solids, and water monitoring, and compares the results against relevant standards and laws where available a Air Quality The air quality in the area surrounding the release remains unchanged following the release event in April The compositional elements of air samples taken after the release were comparable with air samples taken prior to release in the same area, meeting acceptable international levels outlined by the European Union The analysis was carried out using samples taken on a monthly basis for the previous 9 months, including April, following the release All testing met international and Albanian standards After the Release Patos-arinza Air Testing Results Before the Release (9 month average) μg/m Benzene H2S S02 NO2 As part of our commitment to continually improving our operations and to address concerns we have Acceptable International Levels: Air samples compared to European Union Standards heard from the community, Bankers has a broader emissions control program in place, designed to reduce emissions even further by improving facilities and operating practices over the coming years We would like to emphasize and reassure residents of arinza that Bankers was monitoring the air quality throughout the release; at no point during the release was the air unsafe or toxic b Solids/Ground Samples Soil samples taken from the area directly surrounding the release did not contain elevated levels of hydrocarbons and all samples were well within acceptable international levels Low hydrocarbon content of samples containing emitted material from the incident demonstrates that released gas and fluid was not in contact with any oil bearing zone or released any oil to ground water or surface soils

3 After the Release Acceptable International Levels Soil Hydrocarbon Testing Results 1000 mg/kg Acceptable International Levels: Soil samples compared to UK Environment Agency s soil guidelines using the CLEA model Soil samples taken from the area directly surrounding the release did not show significant metal contaminants and were within acceptable international levels Samples taken after the release were compared to samples taken in the same area prior to the release and samples taken outside of the release area The results showed no noticeable difference in the soil characteristics demonstrating that the released material did not cause contamination Some samples indicated marginally elevated levels of nickel when compared to the most conservative standard, but this was consistent with the samples taken prior to the release, not considered to have been caused by the incident

4 Soil etal/inorganic Testing Results After the Release Acceptable International Levels 100 mg/kg Arsenic Barium* Cadmium Chromium Copper Lead Nickel** Selenium Zinc Acceptable International Levels: Soil Samples compared to UK Environment Agency s soil guidelines using the CLEA model *A single Barium test exceeded the most conservative international standards (CLEA), but is still below the threshold acceptable for public parks (1960 mg/kg) **Nickel values are consistent with the geological make-up of the area and remain below limits for public parks (184 mg/kg) c Water Wells Analysis of the water samples taken both before and after the release indicate there was no change to the water quality due to the release Water samples were compared to acceptable international standards (European Union, World Health Organization) and Albanian drinking water standards Recent samples taken after the release were consistent with testing done before, as part of an environmental survey Bankers undertook in September 2014 Water samples taken after the release showed no elevation of hydrocarbon or metals in water demonstrating that no drilling fluids were emitted with the release Water quality has historically been a challenge in this area, as some samples indicated elevated levels of biological and ionic matter consistent with human and agricultural activities Bankers has committed to pay compensation for individual wells damaged by the release, in accordance with the Commune Commission s findings These wells were not drilled deep enough to provide potable water from clean aquifer sources as outlined by international guidelines

5 Patos-arinza Water Testing Results After the Release Before the Release Acceptable International Levels 10 mg/kg NOT APPLICABLE NOT APPLICABLE Acceptable International Levels: Water samples compared to United Kingdom Environmental Protection Act, World Health Organization standards, European Union Drinking Water Standard, United Kingdom Department for Environment Food & Rural Affairs Drinking Water Inspectorate Standard The Company continues to work alongside the village of arinza and the Kuman Commune on ways to improve the environmental conditions from legacy oil operations and to reduce the footprint of hydrocarbon operations for local residents We have heard concerns from the community about the health of their livestock after the release The data referred to above shows that the air, water and soil were not affected by the release and at no time posed a danger to either humans or livestock Being the Partner of Choice: At Bankers we work hard to be a partner of choice for the country of Albania, through careful consideration of social, cultural, environmental, health and safety practices Over the past ten years Bankers has been focused on improving conditions from legacy oil contamination to protect our people and the local community, and lessening the environmental footprint of hydrocarbon operations We work hard to be considerate neighbours and invest in local communities by working closely with the people living and working in the same areas that we operate Our focus has been on building strong relationships within communities based on respect, trust, and honest dialogue The following pages contain the data

6 Well 5761 ERP - Contamination Assessment Report 2 Introduction Bankers Petroleum Albania Limited (BPAL) has prepared this document in support of the company s reclamation action plan following the incident at (P29A lease pad) on 1 st April 2015 This document is structured so as to provide an evidence based overview of the environmental condition of the area surrounding Well Where relevant; monitoring data is considered and compared to: Available baseline data Albanian Standards International Standards Risk based criteria 3 Incident Summary & Overview Incident Summary On April 1, 2015, at approximately 0609 hrs well 5761 experienced a blowout during drilling operations Initial indications are that the drilling rig encountered a zone containing pressured non-hydrocarbon gas located in the shallower water table above the petroleum system The gas migrated up the wellbore to surface, the BOP s were closed and the well was diverted to degasser The degasser line off the manifold progressively washed out due to the pressure and velocity of the gas/water/sand flowing to surface; flow was then diverted to flare tank via 4 inch piping which also progressively wore out This resulted in a large amount of sand and water ponding on the lease surface Bankers enacted the Emergency Response Plan in reaction to the gas release associated with the well blowout Gas and water were coming to surface in the area surrounding the lease and extending into the adjacent arinza village The people within the 500m planning radius were evacuated by Bankers staff and State Police The well was subsequently controlled with mud around 1700hrs on April 1 Casing was set to surface and cemented on April 4 and the rig was released on April 5 Immediate Overview and effect of incident The immediate and observable impact of the incident was as a result of the movement of pressured water/gas flows Two private water well locations and several other locations experienced significant outflows of water and sediment to surface The impacted area was primarily to the east of the drilling lease, towards the arinza village At all locations a fine silty sand was exhausted and there was a loss of volume at least at the near surface resulting in the opening of a number of holes at surface The exit points were in open fields, on a road, around wells, and beneath or adjacent to buildings Page 3 of 37

7 Well 5761 ERP - Contamination Assessment Report 4 Environmental onitoring Geophysical surveys are ongoing in order to characterize any physical impact to the geology underlying the area Environmental monitoring has been undertaken to identify any potential or ongoing environmental risks BPAL has an extensive monitoring network and equipment capacity within the Patos arinza which enabled rapid mobilization of resources following the event 41 Data Sources Air Quality Continuous Air onitoring using electronic equipment GR Albania Air Quality Assessment Air Quality at Drilling Rig 504 and Nearby the Site Ambient Air Quality Tubes Part of a network providing continuous monitoring since June 2013 Soil Quality Post-incident samples Drilling ud Post-incident samples Expelled Sediment Baseline Sampling Trial Pits WSP Environmental Soil and Groundwater Investigation, November 2012 Community Water Well Quality Post-incident samples Pre-incident samples (GR Albania - from 3D Geophysical Survey testing September 2014) 42 Air Quality 421 onitoring Locations and Parameters Air monitoring was undertaken using electronic monitoring equipment at the locations shown in Figure 1 Page 4 of 37

8 Well 5761 ERP - Contamination Assessment Report Continuous Air onitoring Locations Figure 1: Continuous Equipment Air onitoring Locations Page 5 of 37

9 Well 5761 ERP - Contamination Assessment Report Environmental air monitoring commenced as soon as possible after the incident commenced The locations monitored and the parameters measured by the electronic equipment are shown in Table 1 Location Time Frame Parameters measured Time Frame Parameters measured 1 LEL, O 2, H 2S, CH 3SH, CO 2 LEL, O 2, H 2S, CH 3SH, CO 2, CH 4, VOC, CO, SO 2, NO 2 2 LEL, O 2, H 2S, CH 3SH, CO 2 LEL, O 2, H 2S, CH 3SH, CO 2, CH 4, VOC, CO, SO 2, NO 2 5 LEL, O 2, H 2S, CH 3SH, CO 2 LEL, O 2, H 2S, CH 3SH, CO 2, CH 4, VOC, CO, SO 2, NO 2 6 LEL, O 2, H 2S, CH 3SH, CO 2 LEL, O 2, H 2S, CH 3SH, CO 2, CH 4, VOC, CO, SO 2, NO LEL, O 2, H 2S, CH 3SH, CO 2 LEL, O 2, H 2S, CH 3SH, CO 2, CH 4, VOC, CO, SO 2, NO 2 8 LEL, O 2, H 2S, CH 3SH, CO 2 LEL, O 2, H 2S, CH 3SH, CO 2, CH 4, VOC, CO, SO 2, NO 2 9 LEL, O 2, H 2S, CH 3SH, CO 2 LEL, O 2, H 2S, CH 3SH, CO 2, CH 4, VOC, CO, SO 2, NO 2 10 LEL, O 2, H 2S, CH 3SH, CO 2 LEL, O 2, H 2S, CH 3SH, CO 2, CH 4, VOC, CO, SO 2, NO 2 11 LEL, O 2, H 2S, CH 3SH, CO 2 LEL, O 2, H 2S, CH 3SH, CO 2, CH 4, VOC, CO, SO 2, NO Location Time Frame Parameters measured Location Time Frame Parameters measured 3 LEL, CH 4, H 2S, VOC, CO 2 23 Sinkhole at the second house LEL, O 2, H 2S, CH 3SH, CO 2 4 LEL, CH 4, H 2S, VOC, CO 2 24 Sinkhole on the road LEL, O 2, H 2S, CH 3SH, CO 2 5 LEL, CH 4, H 2S, VOC, CO 2 25 Sinkhole by the barn Ongoing LEL, O 2, H 2S, CH 3SH, CO 2 9 LEL, CH 4, H 2S, VOC, CO 2 12 LEL, CH 4, H 2S, VOC, CO 2 13 LEL, CH 4, H 2S, VOC, CO LEL, CH 4, H 2S, VOC, CO LEL, CH 4, H 2S, VOC, CO 2 16 LEL, CH 4, H 2S, VOC, CO 2 17 LEL, CH 4, H 2S, VOC, CO 2 18 LEL, CH 4, H 2S, VOC, CO 2 19 LEL, CH 4, H 2S, VOC, CO 2 20 LEL, CH 4, H 2S, VOC, CO 2 21 LEL, CH 4, H 2S, VOC, CO 2 22 LEL, CH 4, H 2S, VOC, CO 2 Table 1: Continuous Air onitoring Dates and Locations Gradko International Ambient Air onitoring Tubes Bankers has, since October 2013, been maintaining a network of Ambient Air onitoring Tubes at up to 40 locations across the Patos arinza field One of those monitoring stations (Location 23) was in the vicinity of the incident location, between the drilling rig and the village This particular location has been in place since June 2014 The position of Location 23 is shown in Figure 2 Page 6 of 37

10 Well 5761 ERP - Contamination Assessment Report Figure 2: Ambient Air onitoring Location No 23 Page 7 of 37

11 Well 5761 ERP - Contamination Assessment Report The monitoring tubes had been replaced on the 30 th of arch, and were therefore in place throughout the incident After the required exposure, the monitoring tubes were sent to the UK for analysis They had been in situ from the dates of 30 th arch to 6 th of April The parameters tested were NO 2, CO 2, H2S, & VOCs comprising the following: Benzene Toluene Ethylbenzene m/p-xylene o-xylene 2,5-Cyclohexadiene-1,4-dione, 2,5-diphenyl- Benzoic acid + Pentane, 2-methyl- Hexane ethylcyclohexane GR Albania Heavy etals onitoring Independent experts GR Albania were mobilized to site between the 4 th and 6 of April to undertake additional air monitoring This included a suite of heavy metals testing: Cd, Tl, Hg, Co, Cr, Ni, As, n, Cu, Pb The locations their experts specified as most suitable for sampling are shown in Figure 3 Page 8 of 37

12 Well 5761 ERP - Contamination Assessment Report Figure 3: GR Albania Heavy etal onitoring Locations Page 9 of 37

13 Well 5761 ERP - Contamination Assessment Report 422 Analysis of Results Continuous onitoring Locations No H 2 S or flammable gases were identified on the day of the incident BPAL have not at any point since the incident identified any measurable level of H 2 S Trace levels of methane (CH 4 ) were detected at one location but not at level above considered flammable, maximum concentration observed was 35% The CH 4 & LEL readings was identified immediately at the source, however when monitoring was completed a meter away from source there was insufficient gas to get any reading at all; indicating very small quantities being released Reduced oxygen levels were identified at one location during one sampling event, but not at a level considered hazardous The value recorded was 182% compared to a normal value of approximately 21% ethyl ercaptans were identified at some locations (1,2,5,6, 7, 8, 9, 10 & 11) between the 1st and 4th of April The Levels were generally 01ppm compared to the United States Occupational Safety and Health Administration (OSHA) Permitted Exposure Limit of 10 ppm (20 mg/m3) The only value above 01 was a reading of 05ppm at Location 9 on the 1st of April A full copy of the results is provided as Appendix 1 Gradko International Ambient Air onitoring Tubes The monitoring data returned from the laboratory was compared to the last 8 months of monitoring for the same location to identify any changes in ambient air quality at the time of the incident Full results of the monitoring are provided as Appendix 2 Page 10 of 37

14 Well 5761 ERP - Contamination Assessment Report Graph Showing Ambient Air Benzene Concentrations Between June 2014 and April 2015 at Location No Benzene 600 Benzene µg/m Round 8 (June 2014) Round 9 Round 10 Round 11 Round 12 Round 13 Round 14 Round 15 (arch 2015) Round 16 (April 2015) onitoring Round Chart 1: Benzene Concentrations from June 2014 to April 2015 Benzene concentrations decreased at the time of the incident when compared to the previous three months of monitoring Page 11 of 37

15 Well 5761 ERP - Contamination Assessment Report Graph Showing Ambient Air H2S Concentrations Between June 2014 and April 2015 at Location No H2S H2S µg/m Round 8 (June 2014) Round 9 Round 10 Round 11 Round 12 Round 13 Round 14 Round 15 (arch 2015) onitoring Round Round 16 (April 2015) Chart 2: H 2 S Concentrations from June 2014 to April 2015 H 2 S concentrations were approximately the same at the time of the incident as compared to the previous three months of monitoring Page 12 of 37

16 Well 5761 ERP - Contamination Assessment Report Graph Showing Ambient Air SO2 Concentrations Between June 2014 and April 2015 at Location No SO2 SO2 µg/m Round 8 (June 2014) Round 9 Round 10 Round 11 Round 12 Round 13 Round 14 Round 15 (arch 2015) onitoring Round Round 16 (April 2015) Chart 3: SO 2 Concentrations from June 2014 to April 2015 SO 2 concentrations had been decreasing since monitoring Round 13 (December 2014) No increase in SO 2 was identified at the time of the incident Page 13 of 37

17 Well 5761 ERP - Contamination Assessment Report Graph Showing Ambient Air NO2 Concentrations Between June 2014 and April 2015 at Location No NO2 NO2 µg/m Round 8 (June 2014) Round 9 Round 10 Round 11 Round 12 Round 13 Round 14 Round 15 (arch 2015) onitoring Round Round 16 (April 2015) Chart 4: NO 2 Concentrations from June 2014 to April 2015 An increase in ambient concentrations of NO 2 was identified in April when compared to previous monitoring rounds The values recorded remain within the EU standards (40µg/m 3 ) and the Albanian Norms 60µg/m 3 ) NO 2 is a combustion gas and the increase is considered likely to be due to the increase in vehicle and machinery activity in response to the ERP between the 1 st and 6 th of April Page 14 of 37

18 Well 5761 ERP - Contamination Assessment Report Graph Showing Ambient VOC Concentrations Between June 2014 and April 2015 at Location No 23 VOC µg/m Round 8 (June 2014) Round 9 Round 10 Round 11 Round 12 Round 13 Round 14 Round 15 (arch 2015) onitoring Round Top 5 VOC Inc BTEX Round 16 (April 2015) Chart 5: Total VOC Concentrations from June 2014 to April 2015 Total VOC concentrations identified at the location during the incident were lower than the average values recorded during the previous 8 months GR Albania Heavy etals onitoring Results Table 2: Heavy etals in Air onitoring Results onitoring was undertaken at the site on the 4 th of April 2015 in order to identify if air quality had been impacted by heavy metal emissions No samples were recorded as above the limits of detection Page 15 of 37

19 Well 5761 ERP - Contamination Assessment Report 423 Air onitoring Conclusions A rigorous monitoring strategy was put in place as soon as possible after the commencement of the incident and has continued for an extended period In almost all cases the values recorded were at normal ambient levels, or were in line with previously measured background concentrations In a limited number of cases, the very sensitive equipment recorded a number which departed from background levels such as in the case of CH 4, O 2, and CH 3 SH However at all times these were within safe limits It is not therefore considered plausible that any of the parameters measured would have negatively impacted any members of the community or livestock This is reinforced by the absence of conflagration, nor complaints from company workers within the incident area 43 Solids onitoring 431 onitoring Determinands Following the incident the Environmental Department undertook a visual inspection of drainage channels within the vicinity of the lease site Impact was noted in the form of increased sediment and water levels, however there was no visual or olfactory evidence of contamination It was however considered that samples should be taken in order to characterize the material which had been deposited at surface The following soil samples were taken: Expelled material: SDG : S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11 aterial from the lease: SDG : RIG 504 ud, RIG 504 Sand The analysis completed was: Asbestos ID in Solid Samples Cyanide, Complex Cyanide, Free Hexavalent Chromium (s) Arsenic Barium Cadmium Chromium Copper Lead ercury Nickel Selenium Zinc etals Prep PAH by GCS ph Page 16 of 37

20 Well 5761 ERP - Contamination Assessment Report Phenols Total of 5 Speciated (S) by HPLC Organic Carbon, Total Soil Organic atter (SO) VOC (S) by GC S WSP TPH Criteria Working Group Additionally, leachate testing was completed for the following determinands: Asbestos ID in Solid Samples Cyanide, Complex Cyanide, Free Arsenic (dissfilt) Barium (dissfilt) Beryllium (dissfilt) Cadmium (dissfilt) Chromium (dissfilt) Cobalt (dissfilt) Copper (dissfilt) Lead (dissfilt) Nickel (dissfilt) Selenium (dissfilt) Zinc (dissfilt) Chromium, Hexavalent ercury Dissolved Calcium (dissfilt) agnesium (dissfilt) Potassium (dissfilt) Sodium (dissfilt) etals Prep PAH Spec S - Aqueous Phenols Total of 5 Speciated TPH Total (Includes EPH Total and GRO Total) Agricultural land baseline samples: SDG : Trial Pit 1, Trial Pit 2 Two trial pits were dug as part of the Geophysical survey In order to obtain baseline information, two samples were taken from 05m below ground level and tested for: Chloride Water Soluble Sulphate as SO4 Cyanide, Complex Cyanide, Free Cyanide, Total Hexavalent Chromium (s Arsenic Barium Cadmium Chromium Copper Lead ercury Nickel Page 17 of 37

21 Well 5761 ERP - Contamination Assessment Report Selenium Zinc etals Prep Nitrate as NO3 PAH ph Soil Organic atter (SO) TPH Total (Includes EPH Total and GRO Total) 432 onitoring Locations Solids monitoring locations are provided as Figure 4 Page 18 of 37

22 Well 5761 ERP - Contamination Assessment Report Figure 4 Soil and Sediment onitoring Locations Page 19 of 37

23 Well 5761 ERP - Contamination Assessment Report 433 Analysis of Results Human Health Soil Guideline Values In the absence of Albanian Norms, or Soil Guideline Values (SGVs), the results of the analysis have been compared to SGVs based on UK limits derived using the CLEA (Contaminated Land Exposure Assessment) odel The CLEA odel is a computer based application that combines information on the toxicity of soil contaminants with estimates of potential exposure by adults and children living, working and/or playing on land affected by contamination over long periods of time The model focuses on pathways relevant to direct human health risks arising from exposure to contaminated land, consistent with the suitable for use approach It predicts the amount of contaminant to which they might be exposed based on a given soil contaminant concentration By comparing predicted exposure with health criteria values on tolerable or acceptable contaminant intakes, the model is used to generate assessment criteria (ie Soil Guideline Values) that establish a contaminant concentration in soil that is protective of human health Full copies of the results are provided as Appendix 3 Expelled aterial Samples S1-S11 were initially screened to identify parameters recorded above the limits of the detection in the laboratory The majority were below that limit Those present in concentrations above the limits of detection were confined to those hydrocarbons and metals, as presented in Table 3 and Table 4 which show the highest value recorded across all 11 No samples Hydrocarbon Highest Recorded Value (mg/kg) Hydrocarbon SGV (Residential Land Use Including Plant Update) mg/kg Aliphatics >C5-C Aliphatics >C6-C Aliphatics >C8-C Aliphatics >C10-C Aliphatics >C12-C Aliphatics >C16-C Aliphatics >C21-C Aromatics >EC5-EC Aromatics >EC7-EC Aromatics >EC8-EC Aromatics >EC10-EC Aromatics >EC12-EC Aromatics >EC16-EC Aromatics >EC21-EC Aromatics >EC35-EC Table 3: Comparison of highest recorded organic values compared to relevant SGVs Page 20 of 37

24 Well 5761 ERP - Contamination Assessment Report No exceedances of the hydrocarbon SGVs were identified etals Highest Recorded Value (mg/kg) SGV (Residential Land Use Including Plant Update) mg/kg Arsenic Barium Cadmium Chromium Copper Lead Nickel Selenium Zinc Table 3: Comparison of highest recorded inorganic values compared to relevant SGVs arginally elevated Nickel was recorded in 7 No of the 11 No samples, (The highest value was 184mg/kg compared to guideline value of 130mg/kg), but the concentration is within the value for allotments of 230mg/kg To provide context, the standard for public parks are 869mg/kg, and for commercial and industrial sites, a value of 13,000mg/kg is considered acceptable In 2012, an intrusive investigation was under taken across the Patos arinza Field This included the advancement of 130 No boreholes to a depth of approximately 10m In 132 No of the samples tested, nickel was identified at concentrations greater than 230mg/kg The highest concentration was 429mg/kg One borehole, BH108 was located in the vicinity of the incident 2 No samples were taken in November 2012 at depths of 06m-10m and 34m-40m The results were 185mg/kg and 223mg/kg The ground was recorded as natural (ie not made ground) It is therefore considered that the levels of nickel identified in the soil samples are a result of the geological make up of the area, and are at background concentrations A single marginal exceedance of Barium was recorded in S10 with a concentration of 267mg/kg compared to a SGV of 225 This result is an outlier, with the remaining 10 falling between 239mg/kg and 106mg/kg However it is still well within the standard for Public Parks of 1960mg/kg Public Parks are considered appropriate for local parks and open spaces typically located adjacent to residential housing RIG 504 ud, RIG 504 Sand Samples taken from the lease were initially screened to identify parameters recorded above the limits of the detection in the laboratory The majority were below that limit Those present in concentrations above the limits of detection were confined to those hydrocarbons and metals, as presented in Table 4 and Table 5 Page 21 of 37

25 Well 5761 ERP - Contamination Assessment Report RIG 504 UD RIG 504 UD RIG 504 SAND Hydrocarbon SGV (Residential Land Use Including Plant Update) mg/kg Aliphatics >C5-C6 <10 <10 30 Aliphatics >C6-C <10 73 Aliphatics >C8-C Aliphatics >C10-C Aliphatics >C12-C16 <10 <10 93 Aliphatics >C16-C21 <10 < Aliphatics >C21-C35 <10 < Aliphatics >C35-C44 <10 < Aromatics >EC5-EC7 <10 <10 65 Aromatics >EC7-EC8 <10 < Aromatics >EC8-EC Aromatics >EC10-EC Aromatics >EC12-EC16 <10 < Aromatics >EC16-EC21 <10 < Aromatics >EC21-EC35 <10 < Table 4: Comparison of organic concentrations against relevant SGVs No exceedances of the hydrocarbon SGVs were identified etals RIG 504 UD RIG 504 SAND aximum Value Recorded: Percentage of SGV for Residential Land Use (Including Plant Uptake) Arsenic Barium Cadmium Chromium Copper Lead ercury <014 <014 N/A Nickel Selenium <1 <1 N/A Zinc Table 5: Comparison of inorganic concentrations against relevant SGVs arginally elevated nickel was identified in Rig 504 ud with a result of 137mg/kg compared to a Residential SGV of 130mg/kg However, as discussed above, this is considered in line with or less than background levels Trial Pit 1 & 2 Samples from these locations will provide additional background data The results are due on the 12 th of ay Page 22 of 37

26 Well 5761 ERP - Contamination Assessment Report 434 Further Baseline and Validation Sampling Additional surface samples will be taken from non sediment impacted (ie baseline) areas and compared with soil samples taken from areas currently overlain by expelled material This validation will provide assurance that it s possible to return the site to being suitable for its existing end use, or has been returned to its baseline condition 435 Soil onitoring Conclusions The majority of all testing indicated levels below the limits of detection No hydrocarbons were identified in any samples at levels above the Soil Guideline Values for Residential Land Use Limited exceedances of Nickel were identified in approximately half of the samples However this is considered to represent background concentrations In 1 No sample, barium was recorded above the Residential SGV, but considerably below the SGV for Public Parks Overall there is no indication of a substantially elevated concentration of contaminants as a result of the incident Reclamation should focus on reparation of the physical impact 44 Community Water Well onitoring 441 Water onitoring Locations Three main water wells exist within the vicinity of the incident They provide water to a number of households within the area Although a considerable number of unofficial wells are also active access for sampling was not available None of the wells are considered to be potable water wells Water samples were taken from water wells 1, 2, 3 for analysis on 13 th of April Samples were sent to Alcontrol in the UK Concurrently samples were taken by GR Albania, who hold Albanian accreditation for a number of parameters They also have access to the Public Health Directory s Laboratories in Tirana, and maintain a contract with Ambiente SC Laboratory, Italy The locations of the wells are shown in Figure 5 Page 23 of 37

27 Well 5761 ERP - Contamination Assessment Report Figure 5: Location of Community Water wells: 1, 2,& 3 Page 24 of 37

28 Well 5761 ERP - Contamination Assessment Report 442 Water Quality onitoring Parameters GR Albania Laboratory: ph Conductivity TDS (total dissolved solid) TSS (Total suspend solid) Public Health Directory Laboratory- Tirane: Calcium (mg/l) agnesium (mg/l) Chlorine (mg/l) NH4 (mg/l) NO2 (mg/l) NO3 (mg/l) SO4 (mg/l) Hardness P2O5 ((μg/l)l) Ambiente SC Laboratory Italy: Total hydrocarbon (C<12) (μg/l) Total hydrocarbon (C >12) (μg/l) Phenols (μg/l) Alcontrol - UK In order to fully characterize these samples, they were sent to the UK and tested to drinking water standard which significantly reduces the limits of detection This ensures the results can be compared with very stringent drinking water regulations This was done in order to ensure maximum information became available It must however be emphasized that these are general supply wells, and were not drilled or completed to the standards required for water wells Full copies of the results are provided as Appendix 4 Alkalinity, Total as CaCO3 Ammoniacal Nitrogen as N (low level) Ammoniacal Nitrogen Low as NH3 Ammoniacal Nitrogen Low as NH4 Bromide Page 25 of 37

29 Well 5761 ERP - Contamination Assessment Report Chloride Nitrate as N Nitrate as NO3 Phosphate (ortho) as PO4 Sulphate Conductivity (at 20 degc) Cyanide, Complex Cyanide, Free Cyanide, Total Aluminium (dissfilt) Antimony (dissfilt) Arsenic (dissfilt) Barium (dissfilt) Boron (dissfilt) Cadmium (dissfilt) Chromium (dissfilt) Copper (dissfilt) Lead (dissfilt) anganese (dissfilt) Nickel (dissfilt) Selenium (dissfilt) Zinc (dissfilt) Fluoride Chromium, Hexavalent ercury Dissolved Sodium (dissfilt) Hardness, Total as CaCO3 unfiltered etals Prep PAH Spec S - Aqueous (W) ph Value Phenols Total of 5 Speciated (W) by HPLC Sulphide VOC (W) by GC S WSP SVOC exc TIC WSP TPH CWG inc TAE Page 26 of 37

30 Well 5761 ERP - Contamination Assessment Report 443 Analysis of Results Albanian Drinking Water Standards Recommended value aximum allowable value according to STASH 3904: according to STASH 3904: 1997 September 2014 April 2015 September 2014 April 2015 September 2014 April Sample 12 Sample 15 B21 B22 Sample 7Sample 23 B11 B12 Sample 2 Sample 17 B31 B32 ph Conductivity(μS/c) Calcium (mg/l) agnesium (mg/l) Chlorine (mg/l) NH4 (mg/l) NO2 (mg/l) NO3 (mg/l) SO4 (mg/l) TDS (mg/l) Hardness P2O5 (μg/l) Table 6: GR Albania Water Well onitoring Results from April 2015 and September 2014 Page 27 of 37

31 Well 5761 ERP - Contamination Assessment Report In September 2014 Bankers undertook a Geophysical Survey to understand the geology of the Patos arinza oilfield It was recognized that community concerns around water well impact could be caused by the passage and use of vibration source trucks It was therefore decided that a round of well monitoring would be undertaken This provides a direct baseline for comparison with recent testing Table 6 above provides both sets of data, as well as the Albanian drinking water standards Generally is can be seen that water quality has in fact improved since September 2014 It is considered that this is due to increased dilution from aquifer recharge through the winter months A limited number of exceedances of Albanian drinking water standards for NH4 were recorded in two of the April 2015 samples 2 (B12) and 3 (B31) were recorded as 00655mg/l and 0068mg/l respectively compared to a norm of 005mg/l/ European drinking water standards have a value of 05mg/l Therefore NH4 at this level are not considered a contaminant of concern Conductivity of the water was higher than the Norm of 400 μs/cm during all sampling events Conductivity is a water quality indicator rather than a heath impacting parameter Water is affected by the presence of inorganic dissolved solids such as chloride, nitrate, sulfate, phosphate, sodium, magnesium, calcium and iron ions Organic compounds like oil, phenol, do not conduct electrical current very well and therefore have a low conductivity when in water (USEPA) Higher conductivity supports the findings that hydrocarbons are absent or at very low levels Importantly there are a number of sources of pollutants which may be signaled by increased conductivity: eg a failing sewage system would raise the conductivity because of the presence of chloride, phosphate, and nitrate Other sources of increased conductivity are urban runoff from roads and agricultural runoff (water draining agricultural fields typically has extremely high levels of dissolved salts) Full hydrocarbons analysis from the GR monitoring was not available at the time of writing, but is considered in detail in the Alcontrol data set provided below as Table 7 Page 28 of 37

32 Well 5761 ERP - Contamination Assessment Report Determinand Name Albanian Standards ax Allowable Concentration Total coliforms* 0 0 N/100 ml No/100ml 3 <1 56 Streptococci, Faecal (Enterococci)* 0 0 N/100 ml No/100ml <1 <1 <1 Eschericia coli* 0 0 N/100 ml CFU/100ml Ammoniacal Nitrogen Low as NH4 NG 005 mg/l mg/l * Sulphide NG Detected by senses mg/l mg/l * <001 <001 < degc 400 NG µs/cm-3 in 20 oc ms/cm * Aluminium (dissfilt) mg/l µg/l * <29 <29 <29 Antimony (dissfilt) NG 10 µg/l µg/l <016 <016 <016 Arsenic (dissfilt) µg/l µg/l * Barium (dissfilt) NG 100 µg/l µg/l * Boron (dissfilt) µg/l µg/l * Cadmium (dissfilt) 3 5 µg/l µg/l * <01 <01 <01 Copper (dissfilt) µg/l µg/l * <085 <085 <085 Lead (dissfilt) NG 50 µg/l µg/l * < anganese (dissfilt) µg/l µg/l * Nickel (dissfilt) µg/l µg/l * Selenium (dissfilt) NG 10 µg/l µg/l * <039 1 <039 Zinc (dissfilt) µg/l µg/l * ercury (dissfilt) NG 1 µg/l µg/l * <001 <001 <001 Sulphate mg/l mg/l * Chloride mg/l mg/l * Phosphate (ortho) as PO µg/l mg/l * <50 <50 <54 Nitrate as NO mg/l mg/l * 0384 <03 <03 Nitrate as N NG 005 mg/l mg/l * <00677 <00677 Cyanide, Total NG 10 µg/l mg/l * <50 <50 <50 Sodium (dissfilt) mg/l mg/l * Hardness, Total as CaCO3 unfiltered German grade (Results in g/l) mg/l Chromium, Hexavalent NG 50 µg/l mg/l * <30 <30 <30 Page 29 of 37

33 Well 5761 ERP - Contamination Assessment Report Determinand Name Albanian Standards ax Allowable Concentration ph 65 : ph ph Units * Phenol NG 05 µg/l mg/l * <4 <4 <4 2,4-Dichlorophenol NG 30 µg/l µg/l <4 <4 <4 Fluorene µg/l µg/l <4 <4 <4 Hexachlorobenzene NG 1 µg/l µg/l <4 <4 <4 PAH Spec S - Aqueous (W) Naphthalene (aq) No Units µg/l * <01 <01 <01 Acenaphthene (aq) No Units µg/l * <0015 <0015 <0015 Acenaphthylene (aq) No Units µg/l * <0011 <0011 <0011 Fluoranthene (aq) No Units µg/l * <0017 <0017 <0017 Anthracene (aq) No Units µg/l * <0015 <0015 <0015 Phenanthrene (aq) No Units µg/l * <0022 <0022 <0022 Fluorene (aq) No Units µg/l * <0014 <0014 <0014 Chrysene (aq) No Units µg/l * <0013 <0013 <0013 Pyrene (aq) No Units µg/l * <0015 <0015 <0015 Benzo(a)anthracene (aq) No Units µg/l * <0017 <0017 <0017 Benzo(b)fluoranthene (aq) No Units µg/l * <0023 <0023 <0023 Benzo(k)fluoranthene (aq) No Units µg/l * <0027 <0027 <0027 Benzo(a)pyrene (aq) No Units µg/l * <9 <9 <9 Dibenzo(a,h)anthracene (aq) No Units µg/l * <0016 <0016 <0016 Benzo(g,h,i)perylene (aq) No Units µg/l * <0016 <0016 <0016 Indeno(1,2,3-cd)pyrene (aq) No Units µg/l * <0014 <0014 <0014 PAH, Total Detected USEPA 16 (aq) 0 Total PAH 02 µg/l µg/l <0344 <0344 <0344 ethyl tertiary butyl ether (TBE) No Units µg/l * <3 <3 <3 Aliphatics >C5-C6 No Units µg/l <10 <10 <10 Aliphatics >C6-C8 No Units µg/l <10 <10 <10 Aliphatics >C8-C10 No Units µg/l <10 <10 <10 Aliphatics >C10-C12 No Units µg/l <10 <10 <10 Aliphatics >C12-C16 (aq) No Units µg/l <10 <10 <10 Aliphatics >C16-C21 (aq) No Units µg/l <10 <10 <10 Aliphatics >C21-C35 (aq) No Units µg/l <10 <10 <10 Total Aliphatics >C12-C35 (aq) No Units µg/l <10 <10 <10 Page 30 of 37

34 Well 5761 ERP - Contamination Assessment Report Determinand Name Albanian Standards ax Allowable Concentration Aromatics >EC5-EC7 No Units µg/l <10 <10 <10 Aromatics >EC7-EC8 No Units µg/l <10 <10 <10 Aromatics >EC8-EC10 No Units µg/l <10 <10 <10 Aromatics >EC10-EC12 No Units µg/l <10 <10 <10 Aromatics >EC12-EC16 (aq) No Units µg/l <10 <10 <10 Aromatics >EC16-EC21 (aq) No Units µg/l <10 <10 <10 Aromatics >EC21-EC35 (aq) No Units µg/l <10 <10 <10 Total Aromatics >EC12-EC35 (aq) No Units µg/l <10 <10 <10 Total Aliphatics & Aromatics >C5-35 (aq) NG 10 µg/l µg/l <10 <10 <10 VOC S (W) Vinyl chloride NG 05 µg/l µg/l * <1 <1 <1 1,1-Dichloroethene NG 3 µg/l µg/l * <1 <1 <1 Chloroform NG 01 mg/l µg/l * <1 139 <1 Benzene NG 1 µg/l µg/l * <1 <1 <1 Trichloroethene NG 70 µg/l µg/l * <1 <1 <1 1,2-Dichloropropane NG 20 µg/l µg/l * <1 <1 <1 Bromodichloromethane NG 15 µg/l µg/l * <1 244 <1 cis-1,3-dichloropropene NG 20 µg/l µg/l * <1 <1 <1 Tetrachloroethene 1 40 µg/l µg/l * <1 <1 <1 1,2-Dibromo-3-chloropropane NG 1 µg/l µg/l <1 <1 <1 *NG = None Given Table 7: arinza Community Water Wells - Alcontrol testing Page 31 of 37

35 Well 5761 ERP - Contamination Assessment Report Table 7 compares the water determinands against Albanian drinking water standards both Albanian Standards (Norms) and Albanian ax Allowable Concentrations No legal definition was available to indicate the segregation between the levels This is not replicated in other guidelines such as those provided by the World Health Organisation Coliforms were identified in 1 and 3 Coliforms are bacteria that are naturally present in the environment and used as an indicator that other, potentially harmful, bacteria may be present They are generally associated with failing sewage systems Elevated conductivity is recorded in all samples, re-enforcing the GR Albania data as discussed previously Nitrates were recorded as below the limits of detection (<00677mg/l) in 2 No Samples, and 00867mg/l in the remaining sample All of these are greater than the Albanian drinking water standard However the EU Drinking Water Standards (DWS), The UK DWS, and the WHO all specify a standard of 50mg/l Therefore nitrates are not considered to be a contaminant of concern The water sample from 3 has an elevated concentration of anganese at 898µg/l compared to a standard of 50µg/l The WHO provides a health based value of 400ug/l The 50µg/l limit is generally applied since concentrations at or below the health-based guideline may affect the appearance, taste or odour of the water All Polycyclic Aromatic Hydrocarbons (PAHs) are at levels lower than the limit of detection for all 16 priority species identified by the US EPA Water samples were subjected to TPH CWG testing which returns results separated between aliphatic and aromatic hydrocarbons, as well as grouped by carbon chain lengths This would have allowed comparison with the WHO hydrocarbon standards However, in all cases the levels of hydrocarbon were below the limits of detection 444 Water onitoring Conclusions The identification of coliform bacteria indicates the presence of failed, or in this case, largely non-existant sewage management system The village of arinza doesn t have centralised municipal black water treatment It operates largely by the use of soakaway drains; although the Public Health Directorate reports that black water is collected from septic tanks and discharged to a canal It is therefore not unexpected that the underlying water has been impacted by activity of this nature and this is not considered likely to have been caused by the incident As previously discussed, drinking water standards are very conservative and this water is not considered to be a drinking water source However, comparison against those standards serves to demonstrate that water quality at the wells remains good, and no deterioration has been recorded as a result of the incident and, for the measured non-microbial parameters, water quality remains within health based criteria Page 32 of 37

36 Well 5761 ERP - Contamination Assessment Report 5 Conclusions As a result of the incident at Well a number of concerns were raised regarding the environmental condition of the area surrounding the drilling rig This report has systematically addressed the issues of air quality, emitted sediments, and underground water quality using the available historical evidence and chemical testing Bankers will continue to monitor the situation in order to identify any issues that may arise, and to demonstrate compliance with best practice and international standards However, to date, no issues in regards to contamination have been indicated The company remains committed to cleaning and repairing damaged areas, in co-operation with the Government of Albania, and in full collaboration with our community neighbours Page 33 of 37

37 Well 5761 ERP - Contamination Assessment Report Appendix 1 Continuous Air onitoring Results

38 Well 5761 ERP Air onitoring Data Air onitoring Date: 01/04/2015 Parameter/L ocation LEL Oxy H 2 S CO CH 3 SH Time 13:26 13:30 13:04 13:10 13:35 13:18 13:07 13:38 12:54 Parameter/L ocation LEL Oxy H 2 S CO CH 3 SH Time 15:04 15:08 16:30 16:19 14:59 16:15 16:24 14:40 14:50 Parameter/L ocation LEL Oxy H 2 S CO CH 3 SH Time 17:20 17:23 16:56 16:49 17:15 16:44 16:53 17:08 17:02 Parameter/L ocation LEL Oxy H 2 S CO CH 3 SH Time 19:22 19:25 19:00 18:50 19:17 18:44 18:54 19:11 19:05

39 Well 5761 ERP Air onitoring Data Air onitoring Date: 02/04/2015 Parameter/Lo cation LEL Oxy H 2 S CO CH 3 SH Time 10:20 8:35 8:45 9:00 9:10 9:30 10:00 9:45 9:20 7:55 8:20 8:50 9:05 Parameter/Lo cation LEL Oxy H 2 S CO CH 3 SH Time 13:00:00 1:26 12:43 12:34 12:56 13:13 12:39 12:52 12:47 Parameter/Lo cation LEL Oxy H 2 S CO CH 3 SH Time 13:45 13:50 13:26 13:18 13:40 13:57 13:23 13:36 13:33 Parameter/Lo cation LEL Oxy H 2 S CO CH 3 SH Time 14:23 14:28 14:10 14:00 14:20 14:15 14:05 14:31 14:36 Parameter/Lo cation LEL Oxy H 2 S CO CH 3 SH Time 18:08 18:13 17:45 17:55 18:05 18:00 17:50 18:18 18:22

40 Air onitoring Date: 03/04/2015 Parameter/L ocation LEL Oxy H 2 S CO CH 3 SH CH 4 05 Time 9:48 9:53 9:22 10:04 9:43 10:00 10:07 9:40 9:36 9:33 Well 5761 ERP Air onitoring Data Parameter/L ocation LEL Oxy H 2 S CO CH 3 SH CH 4 05 Time 11:37 11:40 11:14 11:49 11:34 11:46 11:53 11:31 11:28 11:21 Parameter/L ocation H 2 S CH LEL VOC (ppm) NO2 (ppm) O 2 % CO (ppm) CO CH 3 SH SO Time: 13:00 Weather: Cloudy Wind direction: From East Parameter/L ocation H 2 S CH LEL VOC (ppm) NO2 (ppm) O 2 % CO (ppm) CO CH 3 SH SO Time: 15:37 Weather: Sunny Wind direction: From West Parameter/L ocation H 2 S CH LEL VOC (ppm) NO2 (ppm) O 2 % CO (ppm) CO CH 3 SH SO Time: 17:40 Weather: Sunny Wind direction: From West

41 Well 5761 ERP Air onitoring Data Air onitoring Date: 04/04/2015 Parameter/ Location H 2 S CH LEL VOC (ppm) NO2 (ppm) O 2 % CO (ppm) CO CH 3 SH SO Time: 8:00 Weather: Sunny Wind direction: Not Windy Parameter/ Location H 2 S CH LEL VOC (ppm) NO2 (ppm) O 2 % CO (ppm) CO CH 3 SH SO Time: 10:00 Weather: Sunny Wind direction: Not Windy House Time: 10:35 Parameter/ Location H 2 S CH LEL VOC (ppm) NO2 (ppm) O 2 % CO (ppm) CO CH 3 SH SO Time: 16:30 Weather: Cloudy Wind direction: From West House Time: 16:47 Parameter/ Location H 2 S CH LEL VOC (ppm) NO2 (ppm) O 2 % CO (ppm) CO CH 3 SH SO Time: 18:30 Weather: Cloudy Wind direction: From North West House Time: 18:37

42 Well 5761 ERP Air onitoring Data Air onitoring Date: 05/04/2015 Parameter/ Location H 2 S CH LEL VOC (ppm) NO2 (ppm) O 2 % CO (ppm) CO CH 3 SH SO Time: 7:45 Weather: Cloudy Wind direction: From East Parameter/ Location H 2 S CH LEL VOC (ppm) NO2 (ppm) O 2 % CO (ppm) CO CH 3 SH SO Time: 9:45 Weather: Rainy Wind direction: Not Windy

43 Well 5761 ERP Air onitoring Data Air onitoring Date: 06/04/2015 Parameter/L ocation H 2 S CH LEL VOC (ppm) CO Time: 9:55 Weather: Cloudy Wind direction: From South Parameter/L ocation H 2 S CH LEL VOC (ppm) CO Time: 12:10 Weather: Cloudy Wind direction: From South Parameter/L ocation H 2 S CH LEL VOC (ppm) CO Time: 14:15 Weather: Cloudy Wind direction: From West Parameter/L ocation H 2 S CH LEL VOC (ppm) CO Time: 17:00 Weather: Cloudy Wind direction: From West Parameter/L ocation H 2 S CH LEL VOC (ppm) CO Time: 18:05 Weather: Cloudy Wind direction: From West

44 Well 5761 ERP Air onitoring Data Air onitoring Date: 07/04/2015 Parameter/ Location H 2 S CH LEL VOC (ppm) CO Time: 7:55 Weather: Cloudy Wind direction: From North Parameter/ Location H 2 S CH LEL VOC (ppm) CO Time: 11:30 Weather: Cloudy Wind direction: From North Parameter/ Location H 2 S CH LEL VOC (ppm) CO Time: 13:23 Weather: Cloudy Wind direction: From North Parameter/ Location H 2 S CH LEL VOC (ppm) CO Time: 16:28 Weather: Cloudy Wind direction: From North

45 Well 5761 ERP Air onitoring Data Air onitoring Date: 08/04/2015 Parameter /Location H 2 S CH LEL VOC (ppm) CO Time: 10:10 Weather: Sunny Wind direction: From North East Parameter /Location H 2 S CH LEL VOC (ppm) CO Time: 11:35 Weather: Sunny Wind direction: From North

46 Well 5761 ERP Air onitoring Data Time: 9:35 Weather: Sunny Wind direction: From North Parameter /Location H 2 S CH LEL VOC (ppm) CO Time: 13:10 Weather: Sunny Wind direction: From North West Parameter /Location H 2 S CH LEL VOC (ppm) CO Time: 17:40 Weather: Sunny Wind direction: From North

47 Well 5761 ERP Air onitoring Date Location No Location/Parameter LEL (%) Oxy (%) H 2 S (ppm) CO 2 (ppm) CH 3 SH (ppm) Time Wind direction Weather conditions 25 Sinkhole on the road Sinkhole on the second house :00 NE Sunny 24 Big sinkhole next to the barn Sinkhole on the road Sinkhole on the second house :00 NW Sunny 24 Big sinkhole next to the barn Sinkhole on the road Sinkhole on the second house :00 NW Sunny 24 Big sinkhole next to the barn Sinkhole on the road Sinkhole on the second house :00 NW Sunny 24 Big sinkhole next to the barn Sinkhole on the road Sinkhole on the second house :30 W Sunny 24 Big sinkhole next to the barn Sinkhole on the road Sinkhole on the second house :30 NW Sunny 24 Big sinkhole next to the barn Sinkhole on the road Sinkhole on the second house :00 N Sunny 24 Big sinkhole next to the barn Sinkhole on the road Sinkhole on the second house :00 SE Sunny 24 Big sinkhole next to the barn Sinkhole on the road Sinkhole on the second house :00 SW Sunny 24 Big sinkhole next to the barn Sinkhole on the road Sinkhole on the second house :00 NW Sunny 24 Big sinkhole next to the barn Sinkhole on the road Sinkhole on the second house :30 NW Sunny 24 Big sinkhole next to the barn Sinkhole on the road Sinkhole on the second house :30 W Sunny 24 Big sinkhole next to the barn Sinkhole on the road Sinkhole on the second house :00 E Sunny 24 Big sinkhole next to the barn Sinkhole on the road Sinkhole on the second house :00 E Overcast 24 Big sinkhole next to the barn Sinkhole on the road Sinkhole on the second house :00 W Overcast 24 Big sinkhole next to the barn Sinkhole on the road Sinkhole on the second house :30 NW Sunny 24 Big sinkhole next to the barn

48 Well 5761 ERP - Contamination Assessment Report Appendix 2 Ambient Air onitoring Results

49 (A division of Gradko International Ltd) 2187 St artins House, 77 Wales Street Winchester, Hampshire SO23 0RH tel: fax: LABORATORY ANALYSIS REPORT REPORT NUBER X3342R CUSTOER Fier, Albania GRADKO LAB REFERENCE GSJ0343 DESPATCH NOTE No DATE SAPLES RECEIVED BOOKING IN REF X3342 QUANTITATIVE ANALYSIS OF BTEX IDENTIFICATION AND ESTIATION (SEI-QUANTITATIVE ANALYSIS) OF TOP 5 VOC ON TENAX DIFFUSION TUBES BY GC/S Analysis has been carried out in accordance with in-house method GL 13 Tube Number GRA Exposure Time(mins) 9840 Sample ID 23 BTEX ng on tube ppb in air* µgm -3* Benzene Toluene Ethylbenzene m/p-xylene o-xylene Top 5 VOC ng on tube ppb in air* µgm -3* Pentane, 2-methyl Hexane Pentane Heptane ethylcyclohexane Identification and estimation results for ng on tube are calculated by reference to toluene and toluene-d8 Internal standard Overall U 136% for quantitative analysis of BTEX compounds + This compound is not covered by our UKAS accredited flexible scope Uptake Rates: Benzene 145 ngppm -1 min -1 All other compounds: 200 ngppm-1min-1 Date of Analysis Analysts Name ariella Angelova Date of Report The Diffusion Tubes have been tested within the scope of Gradko International Ltd Laboratory Quality Procedures calculations and assessments involving the exposure procedures and periods provided by the client are not within the scope of our UKAS accreditation Those results obtained using exposure data shall be indicated by an asterisk Any queries concerning the data in this report should be directed to the Laboratory anager Gradko International Ltd This report is not to be reproduced, except in full, without the written permission of Gradko International Ltd Form LQF32b Issue 6 February 2015 Report Number X3342R Page 1 of 1

50 (A division of Gradko International Ltd) 2187 St artins House, 77 Wales Street Winchester, Hampshire SO23 0RH tel: fax: LABORATORY ANALYSIS REPORT HYDROGEN SULPHIDE IN DIFFUSION TUBES BY UVSPECTROPHOTOETRY REPORT NUBER J01865R BOOKING IN REFERENCE J01865 DESPATCH NOTE CUSTOER Bankers Petroleum Attn: Tim Kemp Lagja 'Sheq adh' Rruga 'Leonard urialdo' Godine 37 Fier, Albania DATE SAPLES RECEIVED 08/04/2015 JOB NUBER N/A Sample Exposure Data TOTAL µg H 2 S - Location Number Date On Date Off Time (hr) µg H 2 S Blank µg/m 3 * ppb * /03/ /04/ Laboratory Blank 002 Exposure times were calculated from start and finish times given on the exposure sheet Overall U ±111% Limit of Detection 0031µg on tube Analysed on UV08 Camspec 550 Analyst Name Joanna Jacek Date of Analysis 14/04/2015 Date of Report 14/04/2015 Analysis carried out in accordance with documented in-house Laboratory ethod GL5 The Diffusion Tubes have been tested within the scope of Gradko International Ltd Laboratory Quality Procedures calculations and assessments involving the exposure procedures and periods provided by the client are not within the scope of our UKAS accreditation Those results obtained using exposure data shall be indicated by an asterisk Any queries concerning the data in this report should be directed to the Laboratory anager Gradko International Ltd This report is not to be reproduced, except in full, without the written permission of Gradko International Ltd Form LQF32b Issue 6 February 2015 Report Number J01865R Page 1 of 1

51 (A division of Gradko International Ltd) 2187 St artins House, 77 Wales Street Winchester, Hampshire SO23 0RH tel: fax: LABORATORY ANALYSIS REPORT DETERINATION OF SULPHUR DIOXIDE IN DIFFUSION TUBES BY ION CHROATOGRAPHY REPORT NUBER BOOKING IN REFERENCE No J01867R J01867 DESPATCH NOTE No CUSTOER DATE SAPLES RECEIVED 08/04/2015 Bankers Petroleum Attn: Tim Kemp Lagja 'Sheq adh' Rruga 'Leonard urialdo' Godine 37 Fier, Albania Sample Date Date Exposure µg S µg S - SO 2 SO 2 Location Number Exposed Finished Hours Total Blank µg/m 3 * ppb* /03/ /04/ Laboratory Blank 001 Comment: Results are blank subtracted Tube was dirty when received Result may be compromised Overall U ±60% Limit of Detection 003µg S Analysed on Dionex ICS3000 ICU5 Analyst Name Katya Paldamova Date of Analysis 13/04/2015 Date of Report 14/04/2015 Analysis has been carried out in accordance with in-house method GL1 The Diffusion Tubes have been tested within the scope of Gradko International Ltd Laboratory Quality Procedures calculations and assessments involving the exposure procedures and periods provided by the client are not within the scope of our UKAS accreditation Those results obtained using exposure data shall be indicated by an asterisk Any queries concerning the data in this report should be directed to the Laboratory anager Gradko International Ltd This report is not to be reproduced, except in full, without the written permission of Gradko International Ltd Form LQF32b Issue 6 February 2015 Report Number J01867R Page 1 of 1

52 (A division of Gradko International Ltd) 2187 St artins House, 77 Wales Street Winchester, Hampshire SO23 0RH tel: fax: LABORATORY ANALYSIS REPORT NITROGEN DIOXIDE IN DIFFUSION TUBES BY UVSPECTROPHOTOETRY REPORT NUBER J01868R BOOKING IN REFERENCE J01868 DESPATCH NOTE CUSTOER Bankers Petroleum Attn: Tim Kemp Lagja 'Sheq adh' Rruga 'Leonard urialdo' Godine 37 Fier, Albania DATE SAPLES RECEIVED 08/04/2015 Sample Exposure Data Location Number Date On Date Off TOTAL Time (hr) g/m 3 * ppb * µg NO /03/ /04/ Laboratory Blank Comment: Results are not blank subtracted Tube was dirty when received Result may be compromised Results have been corrected to a temperature of 293 K (20 ) Overall U 78% +/- Limit of Detection 0017 gno 2 Tube Preparation : 20% TEA / Water Analysed on UV 04 Camspec 550 Analyst Name Chelsea Gemmell Date of Analysis 10/04/2015 Date of Report 10/04/2015 Analysis carried out in accordance with documented in-house Laboratory ethod GL7 The Diffusion Tubes have been tested within the scope of Gradko International Ltd Laboratory Quality Procedures calculations and assessments involving the exposure procedures and periods provided by the client are not within the scope of our UKAS accreditation Those results obtained using exposure data shall be indicated by an asterisk Any queries concerning the data in this report should be directed to the Laboratory anager Gradko International Ltd This report is not to be reproduced, except in full, without the written permission of Gradko International Ltd Form LQF32b Issue 6 February 2015 Report Number J01868R Page 1 of 1