Incident assessment report for confidential underwriting use only

REMEDIATION REPORT –Sanitech - UNITRANS – 55m³ soil – Usakos NAMIBIA 3 Phase 26 June 2019 1 | P a g e

UNITRANS REMEDIATION REPORT – PHASE 3 Supervised and prepared by Sanitech Namibia:

55m³ contaminated soil from Omaruru as a result of a burnout truck, contained at Usakos

Incident assessment report for confidential underwriting use only

REMEDIATION REPORT –Sanitech - UNITRANS – 55m³ soil – Usakos NAMIBIA 3 Phase 26 June 2019 2 | P a g e

INCIDENT INFORMATION ______________________________________

REPORT ON : Remediation (2nd Phase) of 55m³ petrol contaminated soil

HAZARD CLASS AND RISKS : CLASS 3 – FLAMMABLE GASSES - PETROL

TRANSPORTER : UNITRANS NAMIBIA

DATE OF PHASE 2 : 26 June 2019

LOCATION : Private residential open erf in Usakos, NAMIBIA

DATES OF PHASE 4 REMEDIATION : ESTIMATION 07 August 2019

MAIN CONTRACTORS ON-SITE : Sanitech Namibia

3RD PARTY ISSUES : Private owner gave permission to remediate soil on erf

INTRODUCTION

In accordance with the RAP (attached), instruction received from Unitrans (Mr. Lazarus), we confirm that

Sanitech attended to the Phase 3 remediation of the soil related to the truck burnout at Omaruru.

Sanitech was appointed to conduct the full remediation of the contaminated soil recovered from the

original site.

Mr Coetzee from Sanitech responded to the initial call out and was requested to first quote for total clean-

up, sampling and remediation of the site. The quotation was accepted by Unitrans and the remedial

process started. A total of 5 samples were taken at Omaruru on the first visit at 50cm in depth at various

points indicated by Mr Coetzee and couriered to GEOLab SA. Results showed that remediation is

compulsory according to the set standards. The soil was excavated, placed in a biopile and treated with

bio remediating agents.

Incident assessment report for confidential underwriting use only

REMEDIATION REPORT –Sanitech - UNITRANS – 55m³ soil – Usakos NAMIBIA 3 Phase 26 June 2019 3 | P a g e

BACKGROUND ON BIO REMEDIATION AT USAKOS

Product information:

Petrol is an environmental hazardous substance that can have a toxic and harmful effect and should be

cleaned up in-line with the Namibian Environmental Legislation.

All risks were identified by the contractor and mitigation measures were implemented to reduce and

eliminate all risks. All the workers on site were issued with the correct PPE and they were informed of the

risks and the mitigation measures. The site was barricaded off during the remediation process.

DESCRIPTION OF THE SITE AND WORK PERFORMED

Mr Coetzee attended the site on the 26 June 2019 for the 2nd remediation process, to treat the

contaminated soil placed on plastic sheeting for treatment in a biopile. Samples were taken at 3 points

at the core of the pile of 30m. Samples were numbered – N1 (north sample 1), C2 (cente sample 2) and

S3 (south sample 3) with date and Unitrans.

The biopile was covered with pvc sheeting which had remained intact for the whole period, since Phase 2

was completed six weeks ago .

The soil inside the biopile was turned using heavy duty equipment and man power. The biopile was

drenched with water, mixed thoroughly to airated all areas, covered with pvc sheeting again to prevent

water evaporation and allow bacterial activity.

Human activity

The immediate area of the site has no active human activity.

Action taken

• An inspection of the area was conducted – In order

• The bio pile was opened and inspected – soil was still slightly wet with no petrochemical odours

• The soil in the bio pile was mixed thoroughly – aerated properly

• Water was added through the whole mixing period

• The bio pile was covered

• The site was secured and waste was disposed

Incident assessment report for confidential underwriting use only

REMEDIATION REPORT –Sanitech - UNITRANS – 55m³ soil – Usakos NAMIBIA 3 Phase 26 June 2019 4 | P a g e

CONCLUSION

• We trust that the above meets with your immediate requirements in this matter. Should you

have any queries or require any further information in this regard, please do not hesitate to

contact this office.

• This report must be read in conjunction with the remediation action plan (RAP) previously send

and accepted by the client.

• The phase 3 remediation process was completed.

• Periodic site visits will be conducted and watered as needed.

• Further soil samples will be taken on the next site visit after results of official analysis.

SITE PHOTO’S OF PHASE 3 – 26 June 2019

Open Biopile Took samples

Incident assessment report for confidential underwriting use only

REMEDIATION REPORT –Sanitech - UNITRANS – 55m³ soil – Usakos NAMIBIA 3 Phase 26 June 2019 5 | P a g e

Turn soil with TLB

Turn & mix well with water

Turning soil manualy and mix well - Aerated

Incident assessment report for confidential underwriting use only

REMEDIATION REPORT –Sanitech - UNITRANS – 55m³ soil – Usakos NAMIBIA 3 Phase 26 June 2019 6 | P a g e

Incident assessment report for confidential underwriting use only

REMEDIATION REPORT –Sanitech - UNITRANS – 55m³ soil – Usakos NAMIBIA 3 Phase 26 June 2019 7 | P a g e

More operational actions and samples

Final close up, to be inspected after 6 weeks ISSUED WITHOUT PREJUDICE AND DATED THE: 26 June 2019 at Walvis Bay

Disclaimer:

Please note:

This report has been prepared by Sanitech, with all reasonable skills, care and diligence within the terms

of the contract of this client and the report remains the property of the client and is strictly private and

confidential. The report is intended for internal use only and may not be used, or disclosed to anyone

without the permission of Sanitech. Sanitech cannot be held responsible for any changes made to the

report after it has been issued. It should be noted that the report is based on the incident at the time of

survey, Sanitech cannot be held responsible for any changes which have incurred after such date and

time. Sanitech or the client cannot be held responsible for any errors or omissions that may occur or not

be disclosed at the time of survey.

Contractor: Jannie Coetzee 0811242447 manager@hazkem.com