l Nomination of an approved person, such as a site manager, to be responsible for good site practices, including arrangements for collection and effective disposal to an appropriate facility, of all wastes generated at the site;
l Training of site personnel in proper waste management and chemical handling procedures;
l Provision of sufficient waste disposal points and regular collection of waste;
l Appropriate measures to minimize windblown litter and dust during transportation of waste by either covering trucks or by transporting wastes in enclosed containers;
l Regular cleaning and maintenance programme for drainage systems, sumps and oil interceptors;
l Proper storage of general refuse in enclosed bins or compaction units, separated from C&D material; and
l Employment of a reputable waste collector for removal of general refuse from the site, separated from C&D material.
l The design of the foundation works should minimize the amount of excavated material to be generated;
l Excavated soil should be reused on site as far as possible, e.g. for landscape works, in order to minimize the amount of public fill to be disposed off-site;
l Segregation and storage of different types of waste in different containers, skips or stockpiles to enhance reuse or recycling of materials and their proper disposal;
l Encourage collection of aluminium cans by individual collectors by providing separate labelled bins to enable this waste to be segregated from other general refuse generated by the work force;
l Proper storage and site practices to minimize the potential for damage or contamination of construction materials; and
l Plan and stock construction materials carefully to minimize amount of waste generated and avoid unnecessary generation of waste.
l Ash should be stored in storage silos;
l Ash should be handled and conveyed in closed systems fully segregated from the ambient environment;
l Ash should be wetted with water to control fugitive dust, where necessary; and
l The wetted ash should be transported in covered trucks or containers to the designated landfill site.
l The fuel tank to be installed should be of specified durability.
l Double skin tanks are preferred.
l Underground fuel storage tank should be placed within a concrete pit.
l The concrete pit shall be accessible to allow regular tank integrity tests to be carried out at regular intervals.
l Tank integrity tests should be conducted by an independent qualified surveyor or structural engineer.
l Any potential problems identified in the test should be rectified as soon as possible.
l Installation of aboveground fuel oil pipelines is preferable; if underground pipelines are unavoidable, concrete lined trenches should be constructed to contain the pipelines.
l Double skin pipelines are preferred.
l Distance between the fuel oil refuelling points and the fuel oil storage tank shall be minimized.
l Integrity tests for the pipelines should be conducted by an independent qualified surveyor or structural engineer at regular intervals.
l Any potential problems identified in the test should be rectified as soon as possible.
l Installation of leak detection device at storage tank and pipelines.
l Installation and use of pressure gauges (e.g. at the two ends of a filling line) in fuel filling, which allows unexpected pressure drop or difference and sign of leakage to be detected.
l Storage tank refuelling (from road tanker) should only be conducted by authorized staff of the oil company using the company’s standard procedures.
l An Oil Spill Response Plan should be prepared by the operator to document the appropriate response procedures for oil spillage incidents in details. General procedures to be taken in case of fuel oil spillage are presented below.
Training
- Training on oil spill response actions should be given to relevant staff. The training shall cover the followings:-
w Tools & resources to combat oil spillage and fire, e.g. locations of oil spill handling equipment and fire fighting equipment;
w General methods to deal with oil spillage and fire incidents;
w Procedures for emergency drills in the event of oil spills and fire; and
w Regular drills shall be carried out.
Communication
- Establish communication channel with Fire Services Department (FSD) and EPD to report any oil spillage incident so that necessary assistance from relevant department can be quickly sought.
Response Procedures
- Any fuel oil spillage within the STF site should be immediately reported to the Plant Manager with necessary details including location, source, possible cause and extent of the spillage.
- Plant Manager should immediately attend to the spillage and initiate any appropriate action to confine and clean up the spillage. The response procedures shall include the following:
- Identify and isolate the source of spillage as soon as possible.
- Contain the oil spillage and avoid infiltration into soil/ groundwater and discharge to storm water channels.
- Remove the oil spillage.
- Clean up the contaminated area.
- If the oil spillage occurs during storage tank refuelling, the refuelling operation should immediately be stopped.
- Recovered contaminated fuel oil and the associated material to remove the spilled oil should be considered as chemical waste. The handling and disposal procedures for chemical wastes are discussed in the following paragraphs.
l Chemicals and chemical wastes should only be stored in suitable containers in purpose-built areas.
l The storage of chemical wastes should comply with the requirements of the Code of Practice on the Packaging, Labelling and Storage of Chemical Wastes.
l The storage areas for chemicals and chemical wastes shall have an impermeable floor or surface. The impermeable floor/ surface shall possess the following properties:-
- Not liable to chemically react with the materials and their containers to be stored;
- Able to withstand normal loading and physical damage caused by container handling;
- The integrity and condition of the impermeable floor or surface should be inspected at regular intervals to ensure that it is satisfactorily maintained;
- For liquid chemicals and chemical wastes storage, the storage area should be bunded to contain at least 110% of the storage capacity of the largest containers or 20% of the total quantity of the chemicals/chemical wastes stored, whichever is the greater;
- Storage containers shall be checked at regular intervals for their structural integrity and to ensure that the caps or fill points are tightly closed; and
- Chemical handling shall be conducted by trained workers under supervision.
l A Chemicals and/ or Chemical Wastes Spillage Response Plan shall be prepared by the operator to document in details the appropriate response procedures for chemicals or chemical wastes spillage incidents. General procedures to be undertaken in case of chemicals/ chemical waste spillages are presented below.
Training
- Training on spill response actions should be given to relevant staff. The training shall cover the followings:-
w Tools & resources to handle spillage, e.g. locations of spill handling equipment;
w General methods to deal with spillage; and
w Procedures for emergency drills in the event of spills.
Communication
- Establish communication channel with FSD and EPD to report the spillage incident so that necessary assistance from relevant department can be quickly sought.
Response Procedures
- Any spillage within the STF site should be reported to the Plant Manager.
- Plant Manager shall attend to the spillage and initiate any appropriate actions needed to confine and clean up the spillage. The response procedures shall include the followings:-
w Identify and isolate the source of spillage as soon as possible;
w Contain the spillage and avoid infiltration into soil/ groundwater and discharge to storm water channels (in case the spillage occurs at locations out of the designated storage areas);
w Remove the spillage; the removal method/ procedures documented in the Material Safety Data Sheet (MSDS) of the chemicals spilled should be observed;
w Clean up the contaminated area (in case the spillage occurs at locations out of the designated storage areas); and
w The waste arising from the cleanup operation should be considered as chemical wastes.