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Petroleum Development Oman L.L.C.

UNCLASSIFIED DOC ID : SP-1225 June 2001

- Drilling Specification -Environmental Management

User Note:

The requirements of this document are mandatory. Non-compliance shall only be authorised by TWM through STEP-OUT approval.

A controlled copy of the current version of this document is on PDO's EDMS. Before making reference to this document, it is the user's responsibility to ensure that any hard copy, or electronic copy, is current. For assistance, contact the Document Custodian.

Users are encouraged to participate in the ongoing improvement of this document by providing constructive feedback.

Keywords: atmosphere, CFCs, effluent, emissions, energy, environment, fauna, flora, halons, land, materials, noise, resources, sewage, vibration, waste, water consumption.

This document is the property of Petroleum Development Oman, LLC. Neither the whole nor any part of this document may be disclosed to others or reproduced, stored in a retrieval system, or transmitted in any form by any means (electronic, mechanical, reprographic recording or otherwise) without prior written consent of the owner.

Drilling Specification – Environmental Management Version 1.0

Document Authorisation

Document Authority Document Custodian Document Author

Nick West

Ref. Ind: TWM

Date: 06/06/01

TBA

Ref. Ind: TWE/52

Date: 06/06/01

Julian Barlow

Ref. Ind: TWM/11

Date: 06/06/01

The following is a brief summary of the four most recent revisions to this document. Details of all revisions prior to these are held on file by the Document Custodian.

Version No. Date Author Scope / Remarks

Version 1.0 June 2001 Julian BarlowTWM/11

Steve Williams TWB/Y

SP-1225 Page June 2001ii


Contents

1. Introduction...........................................................................................................11.1 Purpose.............................................................................................................1

2. Scope.....................................................................................................................22.1 Definition..........................................................................................................22.2 Deliverables......................................................................................................22.2.1 Records.........................................................................................................22.2.2 Reports..........................................................................................................22.3 Responsibilities.................................................................................................32.4 Emissions to Atmosphere.................................................................................32.4.1 CFCs.............................................................................................................32.4.2 Halons...........................................................................................................32.4.3 Exhausts........................................................................................................42.4.4 Flaring & Venting........................................................................................42.5 Aqueous Effluents.............................................................................................42.5.1 Production Water..........................................................................................42.5.2 Sewage Effluent............................................................................................42.5.3 Drainage Water.............................................................................................52.6 Accidental Releases to Land and Water............................................................52.7 Use of Energy, Materials and Resources..........................................................52.7.1 Land Take.....................................................................................................52.7.2 Water Consumption......................................................................................62.7.3 Materials.......................................................................................................62.8 Waste Management...........................................................................................62.8.1 Waste Segregation.........................................................................................62.8.2 Waste Disposal..............................................................................................72.8.3 Discharge to the Waste pits...........................................................................72.9 Land Management............................................................................................82.9.1 Well Handover..............................................................................................82.10 Performance Monitoring...............................................................................82.11 Review and Improvement.............................................................................82.12 Reporting Format..........................................................................................8

APPENDICES

Appendix 1: Well Engineering Monthly and End of Well Environmental ReportAppendix 2 TWM Waste Segregation Chart

SP-1225 Page June 2001iii


1. Introduction

1.1 Purpose

PDO’s HSE Policy (PL-38) commits the Company to comply with Omani law, to protect the environment and to prevent pollution.

PDO’s HSE Policy is supported by a suite of Corporate Environmental Specifications that define the minimum environmental requirements. Well Engineering is required to comply with PDO’s Environmental Specifications. This document identifies the environmental requirements for Well Engineering in addition to those identified in the Corporate Environmental Specification to allow it to manage aspects of the business which have the potential to either be a hazard to human health or to harm the environment.

SP-1225 Page June 20011


2. ScopeThis Specification applies to all Well Engineering activities carried out by both PDO and its Contractors (i.e. drilling, workover, fraccing, well testing, workshops and associated camps).

This Specification sets out the requirements for environmental management within Well Engineering Operations that are not adequately addressed in the Corporate Environmental Specifications.

2.1 Definition

This Specification addresses the environmental risks arising from Well Engineering activities.

2.2 Deliverables

2.2.1 Records

Records shall be maintained to document the implementation of this Specification. These include:

Monthly Environmental Report End of Well Environmental Report Environmental Incident report (Well Engineering HSE&S 24-hour Incident

Notification Form) Location Survey Report Well Location Custodianship Transfer Form Waste Consignment Note

2.2.2 Reports

PDO staff

Well Engineering environmental performance shall be reported to CSM/2 on a monthly basis

PDO staff and Contractors:

Environmental performance shall be reported monthly (by 10 th of the month) to TWM/11 using the Monthly Environmental Report (ref Appendix 1)

Rigs, Well Test Units, Frac Units, Hoists shall provide details of chemicals used and waste generated at each well in the End of Well Environmental Report (ref Appendix 1)

Any non-compliances with this Specification shall be notified, investigated and reported per procedure ref PR 1444 “Well Engineering Management”.

Environmental incidents shall be reported in accordance with HSE/97/01“Accident investigation and follow up”.

Sightings of the Arabian Oryx shall be reported to the White Oryx Project Field manager of the MRME via CSM/2.



2.3 Responsibilities

The Senior Well Engineer is responsible for ensuring that well designs and wellsite activities comply with the requirements of this Specification. As Contract Holder for drilling rigs, the Senior Well Engineer is also responsible for communicating this Specification to Contractors, and for ensuring that the requirements of this Specification are adhered to within the scope of their contracts. In the event that circumstances prevent compliance with this Specification, the Senior Well Engineer shall seek step-out approval

The Company Site Representative (Drilling, Well Test, Frac and Hoist Supervisor) is responsible for ensuring that activities comply with the requirements of this Specification. In the event that circumstances prevent compliance with this Specification, the Drilling Supervisor shall seek step-out approval

Contractors are responsible for ensuring that activities undertaken within the scope of their contracts are managed in accordance with the requirements of this Specification.

2.4 Emissions to Atmosphere

Well Engineering operations have the potential to generate the following atmospheric emissions:

Venting Flaring Exhausts Fugitive Emissions Halons CFCs Odours

The requirements for managing emissions to atmosphere are identified in the Corporate Environmental Specification, SP 1005 “Emissions to Atmosphere”. In addition the following requirements shall apply to Well Engineering activities.

2.4.1 CFCs

CFCs contribute toward global warming and depletion of the ozone layer and as a consequence CFCs and HCFCs shall be phase out and the use of HFCs minimised within PDO operations.

Within Well Engineering emissions to atmosphere are relatively high as the majority of the losses are caused by the leakage from damaged equipment during moves. Well Engineering Contractors shall actively pursue the replacement of equipment with refrigerants of a lower Ozone Depleting Potential (ODP) and Global Warming Potential (GWP).

Where the Well Engineering Contractor maintains or repairs equipment containing CFCs, CFC recovery and recycling equipment shall be used. Where the maintenance and repair services are conducted by a 3rd party, the Well Engineering Contractor shall ensure that recovery / recycling equipment is being used.

Reports on CFC inventory, emissions to atmosphere, CFCs recovered and reused shall be provided on a monthly basis as per the reporting requirements (Section 2.2.2).

2.4.2 Halons

Halons shall not be used within Well Engineering operations.



2.4.3 Exhausts

Many of the mobile units in the interior are powered by generators fuelled by crude oil. The burning of crude oil has the potential to generate considerable smoke, however this shall be controlled by the following:

Equipment (e.g. centrifuges) shall be fitted to ensure that the generators burn with as clean a flame as practically possible using crude oil as a fuel.

smoky stacks shall be minimised by conducting optimum engine utilisation/maintenance

2.4.4 Flaring & Venting

Flaring and venting of hydrocarbons contribute towards global warming and as such should be minimised to levels as low as practically possible.

Flaring is conducted by the Well Testing Units as part of the testing process of wells. The testing proposal is prepared by the PFAT and submitted to Well Engineering who prepare a programme to carry out the testing in line with the proposal. The quantity flared is influenced by the proposal produced by the PFATs and is therefore outside the direct control of the Well Engineering Department. However Well Engineering has a responsibility to minimise the quantity flared wherever practicable and therefore shall challenge the proposal where required to ensure that flaring is minimised whilst providing the results required by the PFATs.

At the location the Well Test Supervisor is responsible for ensuring that venting and flaring is minimised during the testing operation.

2.5 Aqueous Effluents

The requirements for managing aqueous effluents are identified in the Corporate Environmental Specification SP 1006 “Aqueous Effluents”. In addition the requirements for managing the following aqueous effluent applicable to Well Engineering operations are identified:

Production Water Sewage Effluent Drainage Water

2.5.1 Production Water

Production water is used for drill water on a number of rigs. Whilst this is an efficient use of a “waste product” from the oil it contains concentrations of oil and therefore has the potential to impact the environment if discharged directly to the water pit.

To minimise the impact an oil water separator system shall be used to separate the oil prior to discharging to the water pit. In the event that oil is discharged to the environment it should be removed and disposed as per the requirements of SP-1009 “Waste Management“.

2.5.2 Sewage Effluent

The remote nature of the Well Engineering operations in the interior dictates that sewage effluent cannot be discharged directly to the sewage infrastructure available within the PDO camps. In the past untreated sewage effluent was discharged directly to open sewage lagoons, however this practice is no longer acceptable and shall be phased out by November 2001.



In order to effectively mange sewage effluent and minimise the impact on the environment the following requirement shall be met:

Camp locations should, wherever possible, be located such that the sewage effluent discharges can be connected to permanent sewage treatment facilities.The camp sites supporting units operating in Central Oman (Burhaan, Barik and Qarn Alam) shall, if practicable, be sited within the former SBG (“1000 man”) camp.

Camp locations shall be fitted with a pre-cast concrete septic tank and soakaway for sewage effluent (where ground conditions are suitable).

Well sites shall install a septic/soakway system (typically a 30” conductor, or similar, buried behind the offices and accommodation).

Where ground permeability conditions do not permit the installation of a soak-away pit, holding tanks shall be installed. The effluent from the holding tank will be transported to an approved sewage treatment plant (STP).

The Senior Well Engineer is responsible for ensuring that adequate sewage treatment facilities are in place prior to moving on location.

2.5.3 Drainage Water

Drainage water from the well sites shall be directed towards the waste pits (either directly to the waste pit or to the cellar where it is pumped to the waste pit).

Drainage water from permanently installed washing facilities (e.g. vehicle wash bays) shall be directed via an oil water interceptor prior to discharge to the sewage system.

2.6 Accidental Releases to Land and Water

SP-1007 “Accidental Releases to Land and Water” addresses accidental releases to land and water (hydrocarbons and chemicals) and focuses on minimising the effect on soil, groundwater and the marine environment generated by PDO activities, products and services.

Environmental incidents that result in leaks or spills on land and water shall be managed in accordance with:

PR 1287 “Contingency Plans, Vol 2, Well Engineering Operations”

2.7 Use of Energy, Materials and Resources

SP 1008 “Use of Energy Materials and Resources” addresses the use of:

Energy - fuel and electricity used for “work related” activities Materials (chemicals and its associated packing materials).Resources (land take and freshwater consumption).

In addition, the following requirements shall apply specifically to drilling activities:

2.7.1 Land Take

The land take of Well Engineering operations is managed by minimising the size of the well location. In addition to this the following shall be shall be undertaken:

equipment shall be stored on the rig location, wherever practicableland take and water use shall be minimised by using a combi waste / water pit



2.7.2 Water Consumption

Well Engineering operations consume a considerable amount of water in undertaking its activities and as such shall follow water conservation practices?.

Water quality Hierarchy

In order to make effective use of water resources water shall be used, wherever practicable in the following of preference:

1 Production water2 Saline WSW water3 Water from RO facility4 Fresh WSW water

Water resources from fresh water aquifers that supply local communities shall not be exploited.

Management of Water Pits

At the well site, water conservation practices shall be followed to minimise unnecessary wastage of water resources.

However water conservation practices shall not jeopardise the water reserve required to address potential well control problems.

2.7.3 Materials

The Well site Well Engineer or ADSV is responsible for chemical management at the rig site.

Efficient use shall be made of chemicals and realistic quantities shall be requested when placing orders in order to minimise wastage. In addition the following shall be undertaken:

manage chemical stock on the First in First Out (FIFO) principleseparate hazardous and non hazardous chemicalprotect Big Bags against UV light by covering with tarpaulinrequest re-bagging if packaging is damaged prior to backloading / useinclude copy of TREM or SHOCK card with backload manifestunused chemicals shall be re-palletised and returned to the Supply Department.

2.8 Waste Management

SP 1009 “Waste Management” defines categories of waste and acceptable means of disposal. In addition, the following requirements shall apply specifically to Well Engineering activities.

2.8.1 Waste Segregation

Waste shall be segregated as identified in the TWM Waste Segregation Chart (Appendix 2). To effectively manage the different waste streams and ensure that the waste is properly controlled the following is required:

Interior Camps

Domestic Kitchen Waste Skip Non-Hazardous Waste Skip



Interior locations

Non-Hazardous Waste SkipHazardous Waste SkipScrap Metal SkipWaste Oil TankRecyclable Goods

Adequate skips are required to be available on site to ensure that the wastes are properly managed and stored at the location. The exact waste skips required is dependant upon the operation being carried out and the nature of the wastes generated (e.g. at the rig site all of the skips identified above shall be available at the location).

The waste containers shall be covered in order to keeps camels away.

Problems encountered with the waste management contractors should be referred to the CSR, the Area Services Supervisor (OxO/16).

2.8.1.1 Caustic Drums

Caustic Drums shall be emptied completely and washed out with water. The drum shall then be either punctured with holes in the base or flattened and then placed in the scrap metal skip.

2.8.1.2 Casing and Tubing

The Wellsite Well Engineer shall ensure that:

Protectors are re-installed on unused casing and tubing. Steel pallets and protectors of used tubing are stacked at the side of the location for

collection by the Logistics Department. Steel pallets and protectors of used tubing shall not be placed in the scrap metal bins.

2.8.2 Waste Disposal

All wastes generated shall be removed from the location and be accompanied by a Waste Consignment Note. No waste shall be burnt or buried.

2.8.3 Discharge to the Waste pits

The waste pits at the drilling site shall only be used for disposing:

water based drilling mud and cuttings with Total Petroleum Hydrocarbons, TPH < 10,000 mg/kg (i.e. only discharges with less then 10% hydrocarbon content by weight are allowed). brines brought up from ‘downhole’.and neutralised acids (ref SP - 1222 “Acid Washing”)

Zinc bromide shall not be discharged to the drilling waste pit but must be disposed as a chemical waste. Where calcium bromide is discharged to the waste pit precautions shall be taken to prevent animal and bird access.

2.8.3.1 Oil Based Mud (OBM)

Oil Based Mud (OBM) shall not be discharged to the waste pit. On rigs where OBM is used special measures shall be put in place in order to ensure that cuttings generated are not discharged to the waste pit.



2.8.3.2 Chemical Waste

Waste or surplus chemicals shall not be discharged to the waste pit.Lab chemicals from either mud/cement testing or mud logging operations shall not be sent to the waste pit or septic tank.

2.9 Land Management

SP 1012 “Land Management” addresses the selection and preparation of mobile campsites and well locations as well as other assets/infrastructure. It also addresses the surface requirements of well locations for transfer of custodianship, and for abandonment and restoration.

The Well Engineering End of Well / Monthly Environmental Waste Report (ref Appendix 1) shall be completed at the end of each well and attached to the Well Location Custodianship Transfer Form.

2.9.1 Well Handover

The procedure for managing the transfer of the well location is detailed in PR-1444 Well Engineering Management Procedure,s4.7.4.3. In addition the following minimum requirements shall be adhered to prior to moving off the location

No rubbish on rig/camp locations No oil floating on waste/water pit Back fill rig site septic pit (if present) when moving off Cellar safe: grating installed, valve handles/gauges installed

2.10 Performance Monitoring

Compliance with this Specification shall be monitored through workplace supervision, and periodic site inspection.

Environmental performance shall be monitored by analysis of the information provided in the required (see Section 2.14).

2.11 Review and Improvement

Any user of this document who wishes to provide constructive feedback, or who encounters a mistake or confusing entry is requested to immediately notify the Document Custodian using the form provided in PR 1444 “Well Engineering Management”.

This document shall be reviewed as necessary by the Document Custodian, but no less frequently than every four years. Triggers for full or partial review of this Specification are listed in PR 1444 “Well Engineering Management”.

2.12 Reporting Format

PDO Staff: Environmental performance shall be reported to TWM/11 monthly using the TWM End of Well/Monthly Drilling/Well Test Waste Report (ref Appendix 1).

Contractors: There are no routine reporting requirements against this Specification.



Appendix 1: Environmental Report Form

..\..\FORMS\Env Report - Monthly & End Well version 6.xls

T W M / 1 1 1T W M / 1 1 ( S W E ) , ( W E ) , ( D r i l l i n g C o n t r a c t o r B a s e )

M O N T H L Y E N V I R O N M E N T A L R E P O R T

M o n t h l y

R e p o r t D a t e

R e p o r t T y p e : ( E n d o f W e l l / M o n t h l y )

N e w o r w o r k o v e r

A s s e t A r e a

M e t e r s d r i l l e d ( m o n t h )

M e t e r s d r i l l e d ( e n d o f w e l l )

T W M M O N T H L Y W A S T E R E P O R T R E P O R T F O R :

R i g / W e l l T e s t U n i t / F r a c / I n t e r i o r B a s e

W e l l : ( N a m e / N r )

T y p e : ( M u l t i l a t r l . . l e g / H o r i z o n t a l o n ly / V e r t )

F r o m :S e n d T o : C o p y :

( R I G / W T U / F R A C / C T U / I N T E R I O R B A S E S )

T h e f o l lo w in g i n f o r m a t io n n e e d t o b e s e n d t o T W M / 1 1 , T W M / 1 1 1 b o t h a t t h e e n d o f a w e l l ( B B B ) a n d e v e r y m o n t h . ( A A A ) I t i s m a n d a t o r y t o a t t a c h t h e c o m p le t e d e n d o f w e l l w a s t e r e p o r t ( B B B ) t o t h e W e l l L o a c a t io n C u s t o d i a n s h ip T r a n s f e r f o r m ( i s s u e : 0 1 / 0 0 ) w h e n i t i s s e n t t o t h e c u s t o m e r . M o n t h ly r e p o r t i n g o n ly ( A A A ) is r e q u i r e d f o r in t e r i o r c o n t r a c t o r l o c a t io n s . T h e in f o r m a t i o n f o r m s t h e b a s is f o r E n v i r o n m e n t a l m o n i t o r i n g , a n n u a l r e p o r t i n g t o s t a k e h o l d e r s a n d s a t is f ie s t h e I S O - 1 4 0 0 1 s t a n d a r d .

G E N E R A L H E A D E R D A T A F O R A A A a n d B B B

D a t e S t a r t e d

D a t e R e l e a s e d

S o i l P r o t e c t i o n S c o r e

U n i t11 . 1 m 3

1 . 2 m 3

2 k W h

33 . 1 M T3 . 2 M T3 . 3 M T3 . 43 . 5 M T

44 . 1 M T4 . 2 M T4 . 3 p c e4 . 4 m4 . 5 m 3

4 . 6 m 3

55 . 1 m 3

5 . 2 M T5 . 3 M T5 . 4 p c e5 . 5 p c e5 . 6 m 3

5 . 7 M T5 . 8 m5 . 9 m 3

66 . 1 k g6 . 2 M T6 . 3 d i s p o s e d t o M T6 . 4 d i s p o s e d t o m 3

O T H E R W A S T EC l i n i c a l w a s t e d i s p o s e d t o ( c l in ic ) :N O R M c la s s e d m a t e r i a l s d i s p o s e d t o :O t h e r w a s t eO t h e r w a s t e

O B M c u t t i n g s d is p o s e d o f t o :

H A Z A R D O U S W A S T E :

W a s t e t y r e s d i s p o s e d t o :B a t t e r ie s d i s p o s e d t o :

L u b e o i l / g r e a s e s d is p o s e d o f t o :

C o n t a m in a t e d o i ly s a n d ( s p i l l s ) d is p o s e d t o :H a z a r d o u s W a s t e s k ip c o n t e n t s

M e t e r s o f h o le d r i l l e d w i t h O B M t h i s m o n t h

C h e m ic a l w a s t e ( l iq u id ) d i s p o s e d t o :C h e m ic a l w a s t e ( s o l i d ) d i s p o s e d t o :

M e t e r s o f h o le d r i l l e d w i t h W B M t h is m o n t hV o lu m e o f c u t t in g s in w a s t e p i t t h is m o n t hV o lu m e o f W B M in w a s t e p i t t h i s m o n t h

N O N H A Z A R D O U S I N D U S T R I A L W A S T EG e n e r a l I n d u s t r ia l w a s t e S c r a p s t e e l w a s t eR e t u r n e d w o o d e n p a l l e t s f o r r e - u s e

T o t a l d o m e s t i c w a s t e g e n e r a t e d ( r i g a n d c a m p s i t e ) :D o m e s t ic w a s t e d i s p o s e d t o l a n d - f i l l a t :D o m e s t ic w a s t e b u r i e d a t c a m p s i t e :C o o r d i n a t e s w h e r e t h e w a s t e is b u r ie d a t c a m p s i t e - ( N o r t h in g , E a s t in g ) :D o m e s t ic w a s t e t a k e n b y T h i r d P a r t y ?

N O N H A Z A R D O U S D O M E S T I C W A S T E

V o l u m e

D i e s e l C o n s u m e d ( U n i t )E le c t r i c i t y C o n s u m e d f r o m A s s e t ( C a m p )

E N E R G Y C O N S U M P T I O NC r u d e O i l B u r n e d ( U n i t & C a m p )

D O N O T C H A N G E U N I T S !A A A ) M O N T H L Y D A T A



77 . 1 m 3

7 . 2 m 3

7 . 3 l i t r e

88 . 1 Y e s / N o8 . 2 Y e s / N o8 . 3 Y e s / N o8 . 3 Y e s / N o8 . 4 m 3

99 . 1 s c m9 . 2 m 3

9 . 3 m 3

9 . 4 m 3

9 . 5 m 3

9 . 6 M T9 . 79 . 8 m 3

E s t im a t e o f o i l c o n t a m in a t io n t o f la r e p i t s :

O il f la r e d :

G a s f la r e d :

P r o d u c e d w a t e r d is p o s e d in w a s t e p i tO th e r w a s t e d is p o s e d in w a s t e p i t :S p e c i f y ( a b o v e ) o th e r w a s t e :

P r o d u c e d w a t e r d is p o s e d a t :

O il d is p o s e d a t ( O i l / C o n d e n s a t e )

R ig s i t e s e w a g e d is p o s e d v ia p r e - in s ta l le d s e p t ic s o a k a w a y

W E L L T E S T W A S T E ( f o r w e l l t e s t u n i t s / f r a c o n l y )

C a m p s ite s e w a g e d is p o s e d w i t h v a c u u m t r u c k f r o m h o ld in g ta n kS e w a g e w a s te r e m o v e d f r o m c a m p s it e t o :

S E W A G E D A T A

R ig s i t e c o n s u m p t io nM o n t h ly c o n s u m p t io n p e r m a n / d a y ( R ig + C a m p c o m b in e d )

C a m p s i te s e w a g e d is p o s a l v ia p r e - in s ta l le d s e p t ic s o a k a w a yC a m p s i te s e w a g e d is c h a r g e d in S e w a g e T r e a tm e n t P la n t

P O T A B L E W A T E R C O N S U M P T I O NC a m p s ite c o n s u m p t io n

1 01 0 .1 R - 1 1 k g1 0 .2 R - 1 1 k g1 0 .3 R - 1 1 k g1 0 .4 R - 1 1 k g1 0 .5 R - 1 2 k g1 0 .6 R - 1 2 k g1 0 .7 R - 1 2 k g1 0 .8 R - 1 2 k g1 0 .9 R - 2 2 k g1 0 .1 0 R - 2 2 k g1 0 .1 1 R - 2 2 k g1 0 .1 2 R - 2 2 k g1 0 .1 3 R - 5 0 2 k g1 0 .1 4 R - 5 0 2 k g1 0 .1 5 R - 5 0 2 k g1 0 .1 6 R - 5 0 2 k g1 0 .1 7 R - 1 3 4 a k g1 0 .1 8 R - 1 3 4 a k g1 0 .1 9 R - 1 3 4 a k g1 0 .2 0 R - 1 3 4 a k g1 0 .2 1 R - 4 0 4 a k g1 0 .2 2 R - 4 0 4 a k g1 0 .2 3 R - 4 0 4 a k g1 0 .2 4 R - 4 0 4 a k g1 0 .2 5 R - 4 0 7 k g1 0 .2 6 R - 4 0 7 k g1 0 .2 7 R - 4 0 7 k g1 0 .2 8 R - 4 0 7 k g1 0 .2 9 k g

P R IN T N A M E S C L E A R L Y :P r e p a r e d b y : P o s i t i o n :

S i g n a t u r e :A p p r o v e d B y :( W A S T E C U S T O D IA N )

C h e c k e d B y : P o s i t i o n :

S i g n a t u r e :

T W M f ie ld r e t e n t io n t im e s : M o n t h ly r e p o r t s = 1 y e a r

E n d o f W e l l = C o n t r a c t d u r a t io n

L e a k e d t o a t m o s p h e r e t h is m o n th :R e c o v e r e d / r e c y c le d :

H a lo n I n s t a l le d in p e r m a n e n t f i r e f ig h t in g s y s t e m

In s t o c k o n c a m p / r ig s i te f o r r e p a i r s :L e a k e d t o a t m o s p h e r e t h is m o n th :R e c o v e r e d / r e c y c le d :

In s t o c k o n c a m p / r ig s i te f o r r e p a i r s :

L e a k e d t o a t m o s p h e r e t h is m o n th :R e c o v e r e d / r e c y c le d :

In s t a l le d in e q u ip m e n t :In s t o c k o n c a m p / r ig s i te f o r r e p a i r s :

In s t a l le d in e q u ip m e n t :In s t o c k o n c a m p / r ig s i te f o r r e p a i r s :L e a k e d t o a t m o s p h e r e t h is m o n th :R e c o v e r e d / r e c y c le d :

R e c o v e r e d / r e c y c le d :In s t a l le d in e q u ip m e n t :

In s t o c k o n c a m p / r ig s i te f o r r e p a i r s :L e a k e d t o a t m o s p h e r e t h is m o n th :R e c o v e r e d / r e c y c le d :In s t a l le d in e q u ip m e n t :

L e a k e d t o a t m o s p h e r e t h is m o n th :

L e a k e d t o a t m o s p h e r e t h is m o n th :R e c o v e r e d / r e c y c le d :In s t a l le d in e q u ip m e n t :

In s t a l le d in e q u ip m e n t :In s t o c k o n c a m p / r ig s i te f o r r e p a i r s :

M O N T H L Y C F C IN V E N T O R YIn s t a l le d in e q u ip m e n t :In s t o c k o n c a m p / r ig s i te f o r r e p a i r s :



T W M / 1 1 1T W M / 1 1 ( S W E ) , ( W E ) , ( D r i l l i n g C o n t r a c t o r B a s e )

D O N O T C H A N G E U N I T S !

G E N E R A L H E A D E R D A T A F O R A A A a n d B B B

M e t e r s d r i l l e d ( m o n t h )

M e t e r s d r i l l e d ( e n d o f w e l l )

( R I G / W T U / F R A C / C T U / I N T E R I O R B A S E S )

T h e f o l l o w i n g i n f o r m a t i o n n e e d t o b e s e n d t o T W M / 1 1 , T W M / 1 1 1 b o t h a t t h e e n d o f a w e l l ( B B B ) a n d e v e r y m o n t h . ( A A A ) I t i s m a n d a t o r y t o a t t a c h t h e c o m p l e t e d e n d o f w e l l w a s t e r e p o r t ( B B B ) t o t h e W e l l L o a c a t i o n C u s t o d i a n s h i p T r a n s f e r f o r m ( i s s u e : 0 1 / 0 0 ) w h e n i t i s s e n t t o t h e c u s t o m e r . M o n t h l y r e p o r t i n g o n l y ( A A A ) i s r e q u i r e d f o r i n t e r i o r c o n t r a c t o r l o c a t i o n s . T h e i n f o r m a t i o n f o r m s t h e b a s i s f o r E n v i r o n m e n t a l m o n i t o r i n g , a n n u a l r e p o r t i n g t o s t a k e h o l d e r s a n d s a t i s f i e s t h e I S O - 1 4 0 0 1 s t a n d a r d .

R e p o r t D a t e

R e p o r t T y p e : ( E n d o f W e l l / M o n t h l y )

N e w o r w o r k o v e r

A s s e t A r e a

E n d o f W e l l

S o i l P r o t e c t i o n S c o r e

R i g / W e l l T e s t U n i t / F r a c / I n t e r i o r B a s e

W e l l : ( N a m e / N r )

T y p e : ( M u l t i l a t r l . . l e g / H o r i z o n t a l o n l y / V e r t )

D a t e S t a r t e d

S e n d T o : C o p y :

D a t e R e l e a s e d

E N D O F W E L L W A S T E S T A T E M E N T F O R H A N D O V E R T O T H E A S S E T T E A M

T W M E N D O F W E L L W A S T E R E P O R T R E P O R T F O R :

F r o m :

1 1 S H O C R E F .1 1 . 1 m 3

1 1 . 2 m 3

1 1 . 3 M T1 1 . 4 M T1 1 . 5 M T1 1 . 6 M T1 1 . 7 M T1 1 . 8 M T1 1 . 9 M T1 1 . 1 0 M T1 1 . 1 1 m 3

1 1 . 1 2 m 3

1 1 . 1 3 m 3

1 1 . 1 4 m 3

1 1 . 1 5 % : m 3

1 1 . 1 6 C l a s s : M T1 1 . 1 7 m 3

1 1 . 1 8 M T1 1 . 1 9 M T1 1 . 2 0 m 3

1 1 . 2 1 m 3

1 1 . 2 2 m 3

1 1 . 2 3 m 3

1 1 . 2 4 T y p e : % S t r e n g t h : m 3

1 1 . 2 5 T y p e : C o n c : m 3

1 1 . 2 6 T y p e : M T1 1 . 2 7 m 3

1 1 . 2 8 m 3

1 1 . 2 9 m 3

1 1 . 3 0 m 3

1 1 . 3 1 m 3

1 1 . 3 2

D R I L L I N G F L U I D S ( F R O M S E C T I O N M U D R E P O R T , C O R R E C T F O R L O S S E S )B B B ) E N D O F W E L L D A T A

B r i n e d i s c h a r g e dE s t i m a t e o f w a t e r u s e d f o r c l e a n i n g d i s c h a r g e d t o w a s t e p i t :T o t a l v o l u m e o f f l u i d i n t h e W A S T E p i t ( a t t i m e o f r i g r e l e a s e ) :E s t i m a t e o f D r i l l w a t e r u s e d d u r i n g t h i s p r o g r a m :

A c i d ( s p e n t ) d i s c h a r g e d : B l e a c h d i s c h a r g e d :

C e m e n t a d d i t i v e n a m e :C e m e n t a d d i t i v e n a m e :

C e m e n t s l u r r y d i s c h a r g e d

F r a c t i o n o f C r u d e %A v . R e t o r t % C r u d e o n c u t t i n g s :

M i x w a t e r d i s c h a r g e d :C e m e n t a d d i t i v e n a m e :C e m e n t a d d i t i v e n a m e :C e m e n t a d d i t i v e n a m e :C e m e n t a d d i t i v e n a m e :

Q u a n t i t y

L i q u i d a d d i t i v e :L i q u i d a d d i t i v e :L i q u i d a d d i t i v e :

M u d c h e m i c a l n a m e : M u d c h e m i c a l n a m e : M u d c h e m i c a l n a m e : M u d c h e m i c a l n a m e :

M u d c h e m i c a l n a m e : M u d c h e m i c a l n a m e : M u d c h e m i c a l n a m e : M u d c h e m i c a l n a m e :

T o t a l W B M d r i l l e d c u t t i n g s d i s c h a r g e d t o W a s t e P i tT o t a l W a t e r b a s e d m u d d i s c h a r g e d t o W a s t e P i tC o m p o s i t i o n o f W a t e r b a s e d M u d s y s t e m d i s c h a r g e d i n w a s t e p i t

E s t i m a t e o f D e h y d r a t i o n w a t e r u s e d d u r i n g t h i s p r o g r a m :E s t i m a t e o f D r i l l w a t e r i n t h e W A T E R p i t ( a t t i m e o f r i g r e l e a s e ) :p H o f l i q u i d l e f t i n W a s t e p i t ( a t t i m e o f r i g r e l e a s e )



1212.1 m3

12.2 OBM or UB: m3

12.312.4 m3

13 SHOC REF.13.1 MT13.2 MT13.3 MT13.4 MT13.5 m3

1414.114.214.314.414.514.614.714.814.914.1014.1114.12

PRINT NAMES CLEARLY:

Prepared by:

Approved By:(WASTE CUSTODIAN)

Checked By:

TWM field retention times: Monthly reports = 1 year

End of Well = Contract duration

Signature:

Position:

Signature:

Position:

DO NOT CHANGE UNITS!

OTHER WASTE

Drilled cuttings disposed to:Oil based mud recycled:

DRILLING WASTE/CNSUMPTION OIL BASED MUD/ UNDERBALANCED

Quantity

Quantity

Other chemicals discharged to waste pit - specify type

Dry mud chemicals (rejected/dumped etc) discharged to waste pit:Dry cement discharged to waste pit:Dry cement chemicals discharged to waste pit:

m3

m3

Yes/No/naYes/NoYes/NoYes/NoYes/NoYes/NoYes/NoYes/No

Is the Waste pit lined:Has floating oil been skimmed off the waste pit surface.

Next location after Rig move

Are the gratings on the cellar in place?Cellar empty?Location cleared of rubbish? (at time of rig release)Other relevant info:

Sewage discharged on campsite: (base on pot. water consumed)Has (open) sewage pit been backfilled?Is the location constructed with a combi Water/Waste pit: Is the Waste pit fenced:

Sewage discharged on rig site: (base on pot. water consumed)OTHER ENVIRONMENTAL DATA

Other chemicals discharged to waste pit - specify type

Type of oil based mud:Oil based mud contamination to waste pit:



Appendix 2 TWM Waste Segregation Chart

T W M W A S T E S E G R E G A T I O N O N W E L L S I T ES k i p s t o b e p a r t i t i o n e d a s p e r i n f o n o t e 3 3 4 t o a i d s e g r e g a t i o n

E N G L I S H A R A B I C R E S P O N S I B I L T Y C O N T R O L SC O L O U R C O D E S K I P W A S T E S T R E A M

N O N H A Z A R D O U S A l l p l a s t i c s e . g . b a g s , d r u m s , b o t t l e s ( G e n e r a l R u b b i s h ) P a c k a g i n g M a t e r i a l

N o n m e t a l r o p eU s e d G l o v e sE m p t y n o n - h a z a r d o u s c h e m i c a l s a c k s

( Y E L L O W ) ( e . g . b a g s o f s a l t , b e n t o n i t e , C a C o 3 e t c )S c r a p w o o dR u b b e r ( N o T i r e s )F a n B e l t s ( R u b b e r B e l t s )G l a s sP V C ( P l a s t i c P i p e )F l o u r e s c e n t t u b e s a n d l i g h t b u l b sD r y c e l l b a t t e r i e s ( n o n - r e c y c l a b l e )

H A Z A R D O U S T i r e sW A S T E O i l y / g r e a s y g l o v e s

O l d A i r C o n d i t i o n e r s P a r t s ( f r e o n r e c o v e r r e d )B a t t e r i e sP a i n t T i n s & P a i n t B r u s h e s

( O R A N G E ) S p r a y c a n s ( A e r o s o l C a n s )S o l v e n t B o t t l e s & T i n sO l d O i l F i l t e r sH y d r a u l i c H o s e sO i l y R a g sG r i t b l a s t i n g w a s t e / r e s i d u e sB a g s o f H a z a r d o u s M u d C h e m i c a l sM u d L a b C h e m i c a l W a s t eP i p e D o p e B u c k e t s & B r u s h e s

S C R A P S T E E L W e l d e r ' s S c r a p M e t a lW A S T E C l e a n p i e r c e d C a u s t i c d r u m s

E m p t y 4 2 g a l . O i l d r u m s ( p u n c h h o l e s ! )W i r e S l i n g s ( D r i l l i n g L i n e )

( B L U E ) M e t a l B i n d e r s ( f r o m W W S )S h a k e r S c r e e n sT i n C a n sE l e c t r i c C a b l e ( e - l i n e ) A n y o t h e r m e t a l a r t i c l e s

W A S T E O I L T A N K W a s t e L u b r i c a n t sP a i n t T h i n n e r s

( G R E Y ) D i r t y / u s e d m o t o r o i lS o l v e n t s

D O M E S T I C Y e l l o w B a g s( R i g o w n e d = b l a c k ) - P a p e r

W a s t e C o n t r ' s = y e l l o w - A l u m i n i u m C a n s B l a c k B a g s

( A T C A M P ) - F o o d S c r a p s - k i t c h e n W a s t e

C L I N I C A L W A S T E( P L A S T I C C L I N I C B A G ) M e d i c a l W a s t e( S H A R P C O N T A I N E R ) S h a r p s

R E C Y C L E G O O D S C a s i n g / T u b i n g p r o t e c t o r s( M a t e p i n / b o x t h e n b a c k l o a d t o s u p p l y )W o o d e n p a l l e t sS c r a p B i t s ( L e a v e i n t a c t s e n d t o s u p p l y )P a p e r / c a r d b o a r d ( Y e l l o w b a g s )U s e d p r i n t c a r t r i g e s ( I n t e r n a l m a i l t o H E S / 2 )

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