HEALTH, SAFETY AND ENVIRONMENT SPECIFICATION
Accidental Releases to Land and Water
DOCUMENT ID - SP 1007
REVISION
- 2.0
DATE - 15/07/02
HSE – SPECIFICATION
Setting Clear Requirements
Authorised for Issue by the HSE IC 15/07/2002
Document Authorisation
Document Authority
‘dapo Oguntoyinbo
Ref. Ind: CSM
Date: 15/07/02
Document Custodian
G.T. Tan
Ref. Ind: CSM/2
Date: 15/07/02
Document Author
Maisoon Riyami
Ref. Ind: CSM/21
Date: 15/07/02
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.
Version 2.0
Date
June 2002
Version 1.0
Dec 1998
Author
Maisoon Riyami
Ref. Ind: CSM/21
Scope / Remarks
Editorial changes. New format.
User Notes:
The requirements of this document are mandatory. Non-compliance shall only be authorised by CSM 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.
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.
Users are encouraged to participate in the ongoing improvement of this document by providing constructive
feedback.
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REVISION 2.0
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HSE – SPECIFICATION
Setting Clear Requirements
Contents
1.
INTRODUCTION ....................................................................................................... 1
1.1
1.2
1.3
1.4
PURPOSE.....................................................................................................................1
SCOPE ........................................................................................................................1
RELATED DOCUMENTS ....................................................................................................1
DELIVERABLES ..............................................................................................................1
1.5
1.6
1.7
1.8
RESPONSIBILITY............................................................................................................2
PERFORMANCE MONITORING ............................................................................................3
REVIEW AND IMPROVEMENT .............................................................................................3
REPORTING FORMAT ......................................................................................................4
1.4.1
1.4.2
2
PERFORMANCE REQUIREMENTS ............................................................................. 5
2.1
2.2
2.3
SP-1007
Records ..............................................................................................................1
Reports ..............................................................................................................2
ACCIDENTAL RELEASES TO LAND AND WATER .......................................................................5
SOIL AND GROUNDWATER QUALITY STANDARDS (S&G QS) .....................................................5
THE USE OF EQS FOR SOIL AND GROUNDWATER ....................................................................6
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HSE – SPECIFICATION
Setting Clear Requirements
1.
Introduction
1.1
Purpose
This specification describes PDO's minimum requirements for preventing and managing
accidental releases to land and water and for managing soil and groundwater protection,
which result from PDO and PDO contractors’ activities products or services.
This specification addresses accidental releases to land and water (i.e. leaks and spills of
hydrocarbons and chemicals), through focusing on minimising the effect of these on soil,
groundwater and the marine environment.
1.2
Scope
This specification covers accidental releases generated by PDO’s activities, products and
services.
1.3
Related Documents
Environmental incidents that result in leaks or spills on land and water shall be managed
in accordance with the following PDO Documents:



SP 1007Accidental Releases Specification
Emergency Response suite of Documents (Emergency Response Policy PL 38,
Emergency Response Code of Practice Part I CP 123, Emergency Response
Procedures Part II PR 1065, Emergency Response Documents – Contingency Plans
Part III and Emergency Response Part IV Guideline GU 288) and
PR 1418 Incident Notification, Analysis, Reporting and Follow-Up Procedure.
1.4
Deliverables
1.4.1
Records
A record shall be kept and yearly updated for all sites with equipment, processes and
pipelines containing material harmful to the environment (e.g. hydrocarbons, chemicals).
The record shall contain the following minimum information:
 History of any past leaks, spills or releases
 Visual inspection of the site for evidence of past leaks, spills or releases
 Proximity to sensitive groundwater, surface water or land uses
 Potential for soil and/or groundwater contamination to occur from an off-site source
 Potential for environmental liability resulting from soil and/or groundwater
contamination.

For industrial sites, the record shall consider the following additional elements:

Equipment type, age and condition

Potential for spillage or leakage during product handling or transfer

Potential for equipment corrosion

Availability and effectiveness of any leak detection monitoring devices in place

Use of secondary containment
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Setting Clear Requirements
1.4.2
Reports
All environmental incidents, leaks and spillage’s shall be notified in accordance with the
PR 1418 Incident Notification, Investigation, Reporting and Follow-up Procedure, through
its Environmental Incident/Leak/ Spillage Notification Form. Monthly summary reports
shall be prepared and reported to CSM/2.
Monthly summary reports containing site contamination, remediation and spills data shall
be prepared in the format specified in Section 1.8 and reported to CSM/2.
Major environmental incidents, including major leaks and spills, are required to be
reported in writing to the MRMEWR within 48 hours (refer to PR 1418 Incident
Notification, Investigation, Reporting and Follow-up Procedure).
Any non-compliance with this Specification shall be notified, investigated and reported
per the ‘Non Compliance Report Form’ in CP 122 HSE Management System Manual, Part
2 Chapter 6.
Please note that all loss of containment shall be notified. In the case of loss of
containment of oil/water, only those losses that result in a release into the environment
resulting in soil and/or groundwater contamination, shall be recorded as a spill.
1.5
Responsibility
Asset Managers
Asset Managers are responsible for the prevention of accidental releases to land and
water and for ensuring that soil and groundwater protection within their area of
responsibility (including soil and groundwater protection in contractor activities), are
managed in accordance with the requirements of this Specification.
Accidental releases to land and water and contamination of soil and groundwater
addressed in this Specification shall be:
 identified
 quantified (either by direct measurement or using appropriate methods of
estimation)
 investigated
 recorded, as appropriate (refer to Section 1.4.1)
 reported, as appropriate (refer to Section 1.4.2)
Corporate Functional Discipline Heads
Corporate Functional Discipline Heads are responsible for ensuring that the requirements
of this specification are reflected in the documents for which they are responsible.
Contractors
Contractors are responsible for ensuring that accidental releases to land and water, and
managing soil and groundwater protection in the course of carrying out their contractual
requirements, are managed in accordance with the requirements of this Specification and
reported, when applicable, to the contract holder.
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HSE – SPECIFICATION
Setting Clear Requirements
In the event that circumstances prevent compliance with this Specification, Asset
Managers shall seek step-out approval (refer to CP 122 HSE Management System
Manual, Part 2 Chapter 3).
1.6
Performance Monitoring
A soil and groundwater management programme, plus a leak/spill prevention
programme shall be developed, implemented and maintained to demonstrate
compliance with this Specification. The monitoring programme shall supply the
necessary data to prepare required reports (see Section 1.4.2).
1.7
Review and Improvement
Any user of this document who encounters a mistake or confusing entry is requested to
immediately notify CSM using the ‘User Feedback Form’ provided in CP 122 HSE
Management System Manual, Part 2 Chapter 3.
This Specification shall be reviewed every 4 years. However changes to the current
version may be made in less than four years as the need arises depending upon the
issue of new and relevant environmental legislation and or major organisational changes
in PDO.
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HSE – SPECIFICATION
Setting Clear Requirements
1.8
Reporting Format
Type
Oil, water spills
Oil, water spills
Gas leaks
Parameter
Internal Corrosion
External Corrosion
Mechanical failure
Equipment failure
Human error
Sabotage/theft
Other
Flowline
Pipeline
Production/ Gathering stations
 On plot
 Well sites
 Others
Gas releases
Units
Number per month
Number of sites with the
potential of hydrocarbon
contamination:
 Well sites,
 Gathering stations,
 Production stations,
 Shallow water disposal
Number of sites investigated for
potential soil and ground water
contamination by:
 Site visit
 Site investigation
Sites which need remediation
Sites presently under
remediation
Sites remediated
Number
Other incidents
Historical
Contamination
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Volume of water per month, m
3
Volume of oil per month, m
3
Volume of oil recovered m
2
Total area impacted, m
Number per month
Number per month
Volume per month, scm
Number per month
Number
Number
Number
Number
Number
3
HSE – SPECIFICATION
Setting Clear Requirements
2
Performance Requirements
2.1
Accidental releases to Land and Water
Equipment, processes, pipelines etc. containing material harmful to the environment
(e.g. hydrocarbon, chemicals) shall be designed, maintained, operated and abandoned to
prevent accidental releases to environment.
In case of loss of containment to the environment, the contamination shall be assessed
and the soil and groundwater shall be cleaned to a level compatible with the
environmental quality standard of the receiving environment (Section 2.2).
A soil and groundwater monitoring programme shall be in place for all sites identified as
being impacted by contamination by 2001.
A response/remedial action plan shall be developed and implemented at facilities where
comparison of soil and/or groundwater contamination with legal requirements and/or the
Environmental Quality Standards (EQS) established by this Specification, indicates that a
response/remedial action is required.
Site abandonment, restoration and/or divestment shall consider legal requirements
and/or the Environmental Quality Standards established by this Specification, and the
requirements of SP 1012 Site Preparation, Abandonment and Restoration.
2.2
Soil and Groundwater Quality Standards (S&G QS)
S&G QS focus on protecting human health. These are derived from an assessment of
information on mammalian toxicology, the behavior and fate of substances in soil and
groundwater, and potential human exposure to contaminants.
Environmental Quality Standards (EQS) for groundwater are generally determined in
relation to specific Environmental Quality Objectives (refer to SP 1006 Specification for
Aqueous Effluent).
EQS for soils are more problematic to develop because it is difficult to assess the
practical health hazards associated with contaminated soil. The Environmental Quality
Standards for soils for Oman have not been defined. In the absence of these, the
Environmental Quality Standards for the state of Louisiana (Chapter 4.2 EP 95–0385)
shall apply. Where the receiving environment is of a poorer quality, the background
levels shall be adopted.
PDO’s EQS for soil and groundwater, consider the following factors in the Sultanate of
Oman:



Land use and climate
Potential for contamination of groundwater (depth of groundwater and soil type)
Use of groundwater.
Individual licences and permits may establish EQS that are more stringent than those
required by this Specification. In this case, the more stringent requirements shall apply.
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HSE – SPECIFICATION
Setting Clear Requirements
2.3
The use of EQS for soil and groundwater
The use of EQS for soil and groundwater is illustrated as follows:



SP-1007
Exceedance of EQS with movement of contaminants beyond the boundary fence
shall be considered as a non-compliance with this Specification. Action shall be
taken in these situations to reduce exposure concentrations in the event that an
EQS is exceeded.
Exceedance of EQS within the boundary fence, but with no movement off site
and no occupational health risks on site, shall be managed to ensure that risks
are as low as reasonably practicable (ALARP). Ongoing monitoring of soil and
groundwater quality shall be carried out in these situations.
Concentrations of contaminants below the EQS, both within and beyond the
boundary fence, indicate negligible risks. No action shall be required, although
periodic monitoring may be required.
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