BankName:FNB PhysicalAddress: Director:Branch:Brandwag TheFirs,4thfloor TarikHöppenerBranchCode:230534 CnrCraddockandBiermannAvenue Account:62434305472 Rosebank,Johannesburg,2116

Envitech Solutions (Pty) Ltd. Attn. Brendon Jewaskiewitz 22 Seventh Avenue Northmead Benoni 1501

DATE: 27/02/2017 Landfill gas analysis Enviroserv landfill site Shongweni Dear Brendon, We are sending you the landfill gas analysis results of the two samples taken at the Enviroserv Shongweni landfill site on 30-01-2017. The analysis was conducted in partnership with Siloxa Engineering AG. A few comments to put the results in context for correct interpretation: 1) Sampling The sampling was done by using a laboratory pump with a teflon coated pipe and pump surface. After purging the pump with air the sampling was effected at sampling point V2-P3 at 11.10am and at sampling point V2-P2 at 11.20am. Both samples were taken through a small hole drilled below the activated carbon filter bed.

RE-ENERGISEAFRICA(PTY)LTD.TheFirs,4thfloorCnrCraddockandBiermannAvenueRosebank,Johannesburg2116www.reenergise.co.zaReg.-No.:2013/177435/07VAT.-No.:4730266808TarikHöppenerManagingDirectorC.+27–79–3330420

BankName:FNB PhysicalAddress: Director:Branch:Brandwag TheFirs,4thfloor TarikHöppenerBranchCode:230534 CnrCraddockandBiermannAvenue Account:62434305472 Rosebank,Johannesburg,2116

Sampling point V2-P2 Sampling point V2-P3 2) Main components The residual pressure in the vent pipe appeared to be non-existent or extremely low and Vishan Singh from Envitech Solutions stated that the situation was very unusual based on his previous experience on that site. We are inclined to suggest that it is likely that air had entered the vent system from the outside through the stone drainage layer and became part of the gas mixture sampled from inside the vent piping system. 3) Concentration of H2S The highest ever recorded sample analysed by the laboratory is a hydrogen sulphide concentration of approx. 90,000 mg/m3 that was taken from a landfill site in Spain. The measured concentration of the two samples from the Shongweni landfill site are below the 90,000 mg/m3 but still unusually high. The hydrogen sulphide analysis was done in duplicate for both samples taken from the Shongweni landfill site. 4) Halogenated hydrocarbons, BTEX and long-chain hydrocabons (> n-Pentane) In general North American landfill gas samples appear to have higher levels of impurities than European results. The measured parameters around minor compounds of various hydrocarbons correspond with concentrations observed at North American landfill gas operations.

BankName:FNB PhysicalAddress: Director:Branch:Brandwag TheFirs,4thfloor TarikHöppenerBranchCode:230534 CnrCraddockandBiermannAvenue Account:62434305472 Rosebank,Johannesburg,2116

5) Methanol and ethanol No significant Methanol and Ethanol was found in the sampled gas. This corresponds with the laboratory results of other gas screenings as these elements occur very rarely in landfill gas. Kind regards,

Tarik Höppener Managing Director

BankName:FNB PhysicalAddress: Director:Branch:Brandwag TheFirs,4thfloor TarikHöppenerBranchCode:230534 CnrCraddockandBiermannAvenue Account:62434305472 Rosebank,Johannesburg,2116

Analysis results Laboratory report no. B170116275 B170116276 Sampling point V2-P2 V2-P3 Sampling date / sampled by 30-01-2017 / Tarik Höppener Sample place / gas type landfill site Shongweni / landfill gas Order no. / Date ES 2017-017 / sent 24-01-2017 Main components (according to DIN 51872-04-A (GC-WLD), main components referring to dry gas)

B170116275

Sample V2-P2 B170116276

Sample V2-P3

Methane Vol.- % 9.1 9.2 Carbon dioxide Vol.- % 7.3 6.5 Oxygen Vol.- % 16.4 16.1 Nitrogen Vol.- % 64.4 66.3 Inorganic trace gases (Ammonia VDI 3496 / calorimetric; Hydrogen sulphide DIN 51855-4 / calorimetric)

Ammonia mg/m³N < 0.2 < 0.2 Hydrogen sulphide mg/m³N 29 600 16 500 Halogenated Hydrocarbons (according to VDI 3865 Bl. 4 (GC-FID))

Dichlorodifluoromethane (F12) mg/m³N < 0.1 < 0.1 Vinylchloride mg/m³N 6.4 4.5 Trichloroflouromethane (F11) mg/m³N < 0.1 < 0.1 1,1-Dichloroethene mg/m³N 1.5 1.0 Dichloromethane mg/m³N 0.9 < 0.1 1,1,2-Trichloro-1,2,2-trifluoroethane (F113) mg/m³N < 0.1 < 0.1

trans-1,2-Dichloroethene mg/m³N < 0.1 < 0.1 1,1-Dichloroethane mg/m³N < 0.1 < 0.1 cis-1,2-Dichloroethene mg/m³N 7.1 8.5 Trichloromethane mg/m³N 0.2 < 0.1 1,2-Dichloroethane mg/m³N < 0.1 < 0.1 1,1,1-Trichloroethane mg/m³N < 0.1 < 0.1 Tetrachloromethane mg/m³N < 0.1 < 0.1 Trichloroethene mg/m³N 21.1 19.3 1,1,2-Trichloroethane mg/m³N 0.5 0.6 Tetrachloroethene mg/m³N 3.5 0.2 1,1,1,2-Tetrachloroethane mg/m³N < 0.1 < 0.1 BTEX (according to VDI 3865 Bl. 4 (GC-MS)

Benzene mg/m³N 6.2 6.3 Toluene mg/m³N 198.0 139.0 Ethylbenzene mg/m³N 84.4 59.3 m-/p-Xylene mg/m³N 129.0 96.1 o-Xylene mg/m³N 42.8 35.3 Silicon compounds (according to VDI 3865 Bl. 4 (GC-MS))

Tetramethylsilane mg/m³N 0.8 0.4 Trimethylsilanol mg/m³N 9.5 16.6 Hexamethyldisiloxane (L2) mg/m³N 7.8 6.2 Hexamethylcyclotrisiloxane (D3) mg/m³N 0.4 0.4 Octamethyltrisiloxane (L3) mg/m³N 0.6 0.5

BankName:FNB PhysicalAddress: Director:Branch:Brandwag TheFirs,4thfloor TarikHöppenerBranchCode:230534 CnrCraddockandBiermannAvenue Account:62434305472 Rosebank,Johannesburg,2116

Octamethylcyclotetrasiloxane (D4) mg/m³N 4.9 6.6

Decamethyltetrasiloxane (L4) mg/m³N < 0.1 < 0.1 Decamethylcyclopentasiloxane (D5) mg/m³N 0.5 0.8

Sum silicon compounds (calc.) mg/m³N 24.5 31.5 Sum silicon (calc.) mg/m³N 8.3 10.6 Hydrocarbons (according to VDI 3865 Bl. 4 (GC-FID) > n-Pentane, <= n-Decane mg/m³N 2 280 2 220 > n-Decane mg/m³N 52 69 Additional tests (according to VDI 3865 Bl. 4 (GC-MS)

Methanol mg/m³N < 1 < 1 Ethanol mg/m³N < 1 < 1 n. d. = not determined, n. a. = not applicable

WARNING: The sample(s) to which the findings recorded herein (the “Findings”) relate was (were) obtained from the Client. The Findings constitute no warranty of the sample’s representativeness of any goods and strictly relate to the sample(s). The Company accepts no liability with regard to the origin or source from which the sample(s) is/are said to be extracted. Attention is drawn to the limitation of liability, indemnification and jurisdiction issues defined therein. Any holder of this document is advised that information contained hereon reflects the Company’s findings at the time of its intervention only and within the limits of Client’s instructions, if any. The Company’s sole responsibility is to its Client and this document does not exonerate parties to a transaction from exercising all their rights and obligations under the transaction documents. Any unauthorized alteration, forgery or falsification of the content or appearance of this document is unlawful and offenders may be prosecuted to the fullest extent of the law.