Hydrocarbon Management PROCEDURE

Transcription

1 Hydrocarbon Management PROCEDURE Doc No: Approved: PRO-0380 Operations Manager

2 Table of Contents 1. PURPOSE SCOPE REFERENCES LEGISLATION/STANDARDS DEFINITIONS HYDROCARBON MANAGEMENT SYSTEM BIOREMEDIATION AREA MATERIAL TO BE TREATED REQUIREMENT TO NOTIFY SOIL CONTAMINATION ASSESSMENT OF REQUIREMENT TO LAND FARM TRANSFER OF CONTAMINATED SOIL TO LAND FARM LOCATION LAND FARM LOCATION PILE PARAMETERS COMPLETION OF LAND FARMING PROCESS MONITORING AND MANAGEMENT PROGRAM... 6 MONTHLY... 6 QUARTERLY... 6 ANNUALLY ACCOUNTABILITIES DOCUMENT CONTROL COMMUNICATION & CONSULTATION August August of 8

3 1. PURPOSE Integra Coal Operations (ICO) uses a number of hazardous substances including diesel, lubricating oils, grease, solvents, paints, coolants and flocculant. The purpose of this Hydrocarbon Management Procedure is to ensure that operations at ICO are undertaken in a manner that minimises hydrocarbon and chemical spills and provides information regarding management and reporting requirements if a spill occurs. 2. SCOPE This procedure applies to the management, storage and handling of hydrocarbon materials and the bioremediation treatment of hydrocarbon contaminated soils across the site. 3. REFERENCES 3.1 LEGISLATION/STANDARDS NSW Contaminated Land Act 1997 Protection of the Environment Operations Act 1997 State Environmental Planning Policy (SEPP) 55 Remediation of Lands National Environmental Protection Measure (NEPM) Schedule B1 Guideline on Investigation Levels for Soil and Groundwater AS : The storage and handling of flammable and combustible liquids 4. DEFINITIONS Accountability Hazardous Material Hydrocarbon A function of a person s role, for which he or she is answerable to their supervisor or manager. Anything that, when produced, stored, moved, used or otherwise dealt with without adequate safeguards to prevent it from escaping, may cause injury or death or damage to life, property or the environment. An organic compound or chemical compound consisting entirely of hydrogen and carbon. Hydrocarbons are the main constituents of fuels and oils. For the purposes of this procedure Coal is not included in the management of hydrocarbons as a number of other procedures deal with the volatility and environmental concerns of coal extraction and storage. 10 August August of 8

4 5. HYDROCARBON MANAGEMENT SYSTEM To provide proficient procedures, training personnel and equipment for the storage and handling of hydrocarbon materials on the mine site. Actions All employees to be advised of the potential impact of hydrocarbons during inductions and toolbox talks Documentation of record of induction, toolbox talks and training shall be maintained on site Where fuel, oil or chemicals are to be stored on site, a secure and imperviously bunded area (110% of volume of largest vessel) shall be provided. Minimum separation distances between hydrocarbons and other storage facilities and ignition sources shall be maintained Spill kits shall be readily accessible and maintained at storage and fill/drainage points. Where practical a hardstand location shall be utilised for the draining of spent hydrocarbons. Refuelling of mobile plant and equipment should be undertaken, where feasible, on designated hardstand areas or provided with temporary bunding to contain any spillages MSDS for all chemicals stored on site and available Oil water separators for drainage from workshops/washdown areas must be maintained Responsibility Advisor / Training Advisor / Training Advisor / Maintenance Advisor / Maintenance Advisor / Store Maintenance Operations and contractors All personnel Maintenance 6. BIOREMEDIATION AREA 6.1 MATERIAL TO BE TREATED Material requiring treatment is any topsoil, subsoil, clay, rock or other solid media (for the purposes of this procedure, referred to as soil ) which has been impacted by a hydrocarbon substance (e.g. diesel, hydraulic oil, engine oil, gearbox oil, grease etc). 6.2 REQUIREMENT TO NOTIFY SOIL CONTAMINATION All personnel must notify their supervisor of all hydrocarbons spills which result in soil contamination regardless of volume. The Supervisor or Advisor (ECA) will record the following details of the incident in the "Hydrocarbon Incident Register". 1. Location of Spill 2. Estimated volume of hydrocarbon involved. (litres) 10 August August of 8

5 3. Estimated soil contaminated (m3) 4. Action taken (area bunded, absorbent material spread, hydrocarbon contained, material removed offsite by certified waste contractor, material removed to bio-remediation site). 5. Person/s involved. 7. ASSESSMENT OF REQUIREMENT TO LAND FARM A supervisor, once aware of an incident of hydrocarbon contamination of soils, will decide whether land farming is an appropriate form of soil treatment. The ECA can assist the supervisor in this assessment, if required. 8. TRANSFER OF CONTAMINATED SOIL TO LAND FARM LOCATION Prior to the opportunity to transfer the contaminated soil to the land farm site being available, contaminated soil should be delineated to prevent it being handled as uncontaminated soil (such as waste rock overburden/interburden). The hydrocarbon and contaminated material must be contained prior to removal. The supervisor is to authorise the transfer of the contaminated soil to the land farming location at a time when practical to do so. 9. LAND FARM LOCATION The location for land farming should be one which is readily accessible by plant (trucks, excavator etc), where contaminated material can reside for an extended period (as a guide, 1-2 years), is removed from any clean water system and is not at risk of being buried by waste emplacement activity. The bioremediation area should be clay bunded and designed so that it does not drain freely. Typically the land farm should have delineated areas ( bays ) to support individual treatment of either contamination by different hydrocarbon types, different degrees of contamination and/or different stages of land framing progress. Treatment locations should be areas which would not be expected to receive significant overland drainage (ie get flooded) and be within an area that is not to be impacted by dumping, rehabilitation or other disturbances such as road construction etc. for at least 3 years. The location of the Open Cut land farming site is currently in the vicinity of the RL100 dump area. The location of the Underground land farming site is in vicinity of the stowe emplacement area (below the RL100m ROM coal handling area). 10. PILE PARAMETERS To maximise the performance of the land farming process to remove hydrocarbon contamination from soils, it is important to: 10 August August of 8

6 Limit pile depth a maximum height of 1m is recommended (a lower pile height will accelerate hydrocarbon degradation, a higher pile will slow down degradation etc); Ensure pile is not compacted; and Periodically turn the pile (more frequent turnings will accelerate degradation of hydrocarbons). Hydrocarbon degradation can also be accelerated by addition of water to the pile beyond that afforded by incident rainfall and addition of nutrient such as chicken manure. 11. COMPLETION OF LAND FARMING PROCESS Satisfactory completion of land farming is considered to be when hydrocarbon concentration within the pile has reached less than 1000ppm TPH (total petroleum hydrocarbon) concentration. This is verified through chemical analysis by a commercial analytical laboratory. A Hydrocarbon Management Register must be kept by the ECA containing the following information: 1. Test results from a NATA certified Laboratory of all remediated soil prior to disposal to in pit waste dump. 2. Volume of material taken to in pit waste dump. 3. Date and location of dumped material 4. Name of Supervisor and ECA. Material should be block tipped on the inner part of the dump and not at or over the tip face. The material must be dumped at an RL at least 20 metres above the groundwater level which is predicted after mine closure, and at least 10 metres below final design surface. (Rehabilitated surface). Refer to NEPM Schedule B1 Guideline, Section 2.4.2, Ecological Screening Levels for "Urban Residential and public open space" (coarse limits should be used given the nature of overburden material). Once the material is considered suitable, it can be transported and either direct placed or merged with topsoil stockpiles for future use in rehabilitation activities. 12. MONITORING AND MANAGEMENT PROGRAM Monthly Visual inspection by the ECA of land farm area. Note condition of area generally, pile height, degree of compaction, bunding condition, moisture levels. ECA to arrange any necessary corrective works through the area supervisor. Quarterly If required, ECA to arrange turning and mixing of the piles through the area supervisor. 10 August August of 8

7 Annually If required, ECA to collect representative soil samples from piles and obtain TPH concentrations. ECA to advise supervisor of ability to remove any successfully decontaminated soil material from the area on the basis of analytical results, as appropriate. The ECA will be responsible for recording information. 10 August August of 8

8 13. ACCOUNTABILITIES ROLE ACCOUNTABILITIES Environment & Community Advisor Works with document control to ensure procedure is kept up to date and the latest version is kept on Integra s Intranet. Arranges for relevant people to be trained on this procedure. Monitoring and oversight of the land farm facility. Technical assistance to area supervisors. Facilitating spoil pile turning, watering, nutrient addition etc in conjunction with area supervisor. Maintain the Hydrocarbon Management Register and Hydrocarbon Incident Register Supervisor Reporting of spill incidents to the Environment & Community Advisor. Ensure contaminated soil is not handled as normal (uncontaminated) waste. Facilitating transfer of hydrocarbon contaminated soil to the land farm facility. Facilitating spoil pile turning, watering, nutrient addition etc in conjunction with the Environment & Community Advisor. All persons Report hydrocarbon spills to area supervisor or ECA. 14. DOCUMENT CONTROL This procedure is to be reviewed every three (3) years and modified as necessary. 15. COMMUNICATION & CONSULTATION This procedure is to be circulated to all key stakeholders for comment, prior to finalisation. 10 August August of 8