Haiphong department of transport

4.3.5. LOCATIONS OF LIQUID AND TOXIC MATERIAL STORAGE AREAS:
The CEMP Site Plans shall specify the locations for the storage of liquid materials and toxic materials. The following conditions to avoid adverse impacts due to improper fuel and chemical storage:
 All fuel and chemical storage (if any) shall be sited on an impervious base within a bund and secured by fencing. The storage area shall be located away from any watercourse or wetlands. The base and bund walls shall be impermeable and of sufficient capacity to contain 110 percent of the volume of tanks.

 Filling and refuelling shall be strictly controlled and subject to formal procedures and will take place within a bounded area to contain spills / leaks of potentially contaminating liquids.

 All valves and trigger guns shall be resistant to unauthorized interference and vandalism and be turned off and securely locked when not in use. - The contents of any tank or drum shall be clearly marked. Measures shall be taken to ensure that no contaminated discharges enter any drain or watercourses.

 Disposal of lubricating oil onto the ground or water bodies will be prohibited.

 Should any accidental spills occur immediate clean up will be undertaken and all cleanup materials stored in a secure area for disposal to a Site authorized to dispose of hazardous waste
4.3.6. EARTHWORKS, CUT AND FILL SLOPES
Earthworks, cuts and fill slopes shall be carefully managed to minimize negative impacts on the environment.
The Contractor shall maintain stable cut and fill slopes at all times and cause the least possible disturbance to areas outside the prescribed limits of the works.
The Contractor shall complete cut and fill operations to final cross-sections at any one location as soon as possible and preferably in one continuous operation to avoid partially completed earthworks, especially during the rainy season.
In order to protect any cut or fill slopes from erosion, in accordance with the drawings, cut off drains and toe-drains shall be provided at the top and bottom of slopes and be planted with grass or other plant cover. Cut off drains should be provided above high cuts to minimize water runoff and slope erosion.
Any excavated cut or unsuitable material shall be disposed of in designated disposal areas as approved by the Engineer. Disposal sites should not be located where they can cause future slides, interfere with agricultural land or any other properties, or cause soil from the dump to be washed into any watercourse. Drains may need to be dug within and around the tips, as directed by the Engineer.
4.3.7. STOCKPILES AND BORROW PITS
The construction of the road will use existing borrow pits or quarries. However, in case that new borrow pits and quarries are needed, the Contractor shall carry out the following activities:
 Locations of stockpiles, quarries and borrow pits shall be identified and demarcated, ensuring that they are a minimum of 25 m from critical areas such as steep slopes, erosion- prone soils, cultivated lands, and areas that drain directly into water bodies. Locations of stockpiles, quarries and borrow pits shall be in non-productive land to the maximum extent possible and be approved by the Engineer;

 Location of stockpiles, quarries, and borrow pits shall avoid sensitive areas such as nature reserves, scenic spots, forest parks, water source protection areas, etc;

 Limit extraction of material to approved and demarcated quarries and borrow pits;

 Stockpile topsoil when first opening the borrow pit. After all usable borrow has been removed, the previously stockpiled topsoil should be spread back over the borrow area and graded to a smooth, uniform surface, sloped to drain. On steep slopes, benches or terraces may have to be specified to help control erosion;

 Excess overburden should be stabilized and re-vegetated. Where appropriate, organic debris and overburden should be spread over the disturbed site to promote re-vegetation. Natural re-vegetation is preferred to the extent practicable;

 Existing drainage channels in areas affected by the operation should be kept free of overburden;

 The Contractor shall ensure that all borrow pits used are left in a trim and tidy condition with stable side slopes, re-establishment of vegetation, restoration of natural water courses, avoidance of flooding of the excavated areas wherever possible so no stagnant water bodies are created which could breed mosquitoes;

 When the borrow pits cannot be refilled or reasonably drained, the Contractor shall consult with the local community to determine their preference for reuse such as fish farming or other community purposes;

 No foreign material generated/ deposited during construction shall remain on site;

 Areas affected by stockpiling shall be reinstated to the satisfaction of the Engineer.

4.3.8. DISPOSAL OF DEBRIS
The Contractor shall carry out the following activities:
 Establish and enforce daily site clean-up procedures, including maintenance of adequate disposal facilities for debris;

 Debris generated due to the dismantling of existing structures shall be suitably reused, to the extent feasible, in the proposed rehabilitation program (e.g. as fill materials for embankments). The disposal of remaining debris shall be carried out only at sites identified and approved by the Engineer. The Contractor should ensure that these sites (a) are not located within designated forest or cultivated areas; (b) do not impact natural drainage courses; and (c) do not impact endangered/rare flora. Under no circumstances shall the Contractor dispose of any material in environmentally sensitive areas;

 In the event any debris or silt from the sites is deposited on adjacent land, the Contractor

shall immediately remove such, debris or silt and restore the affected area to its original state to the satisfaction of the Engineer;

 Water courses shall be cleared of debris and drains and culverts checked for clear flow paths;

 Include provisions for incorporating the most appropriate stabilization techniques for each disposal site and determine that the selected spoil disposal sites do not cause unwanted surface drainage;

 Assess risk of any potential impact regarding leaching of spoil material on surface water;

 Once the job is completed, all rehabilitation -generated debris should be removed from the site.

4.3.9. DEMOLITION OF EXISTING INFRASTRUCTURES
The following measures shall be implemented in order to protect workers and the public from falling debris and flying objects:
 Set aside a designated and restricted waste drop or discharge zones, and/or a chute for safe movement of wastes from upper to lower levels;

 Conduct sawing, cutting, grinding, sanding, chipping or chiselling with proper guards and anchoring as applicable;

 Maintain clear traffic ways to avoid driving of heavy equipment over loose scrap;

 Provide all workers with safety glasses with side shields, face shields, hard hats, and safety shoes.

4.3.10. BRIDGES, OVERPASSES, INTERCHANGES AND VIADUCTS
The Contractor shall submit a bridge, overpass, interchange or viaduct construction method statement to the Engineer for approval, detailing the location of the temporary bypasses, spill prevention measures, and sedimentation control measures, surface water flow diversion, reinstatement, etc;
After bridge construction, the works area, stream diversion, settlement pond areas and temporary bypasses shall be reinstated to the satisfaction of the Engineer.
4.4. CLEARANCE, RE-VEGETATION PLANTING AND RESTORATION MANAGEMENT PLAN
The Contractor shall prepare a Clearing, Re-Vegetation Planting and Restoration Management

Plan for approval of the Engineer. No work can be commenced until this approval is given. The

Plan shall identify procedures and mitigation measures for clearing, re-vegetation and restoration of construction areas.
4.4.1. CLEARING OF CONSTRUCTION AREAS
The Contractor shall ensure the following provisions are included in its Plan:
 Allow the existing usage of the Site to continue as long as is practicable, without interference with the Contractor’s activities. Vegetation shall not be disturbed in those areas not

described in the Plan for non objection;

 Large or significant trees in camp areas and access roads should be preserved wherever possible;

 Before vegetation clearing takes place in any rehabilitation area, search and rescue and seed collection shall be undertaken;

 Before clearing of vegetation, the Contractor shall ensure that all litter and non-organic material is removed from the area to be cleared;

 Vegetation clearing shall take place in a phase manner in order to retain vegetation cover for as long as possible;

 All indigenous plant material removed from cleared areas shall be stockpiled for mulching.

All remaining vegetation shall be removed and disposed of at an approved landfill site.

 The Contractor shall remove topsoil from all areas where topsoil will be impacted on by rehabilitation activities, including temporary activities such as storage and stockpiling, etc;

 Stripped topsoil shall be stockpiled in areas approved by the Engineer for later use in re- vegetation and shall be adequately protected.

The application of chemicals for vegetation clearing shall be minimized. To the extent possible, non-residual chemicals shall be selected and with negligible adverse effects on human health;
Herbicides use in the Project shall be shown to be effective against the target vegetation species, have minimum effect on the natural environment, and be demonstrated to be safe for inhabitants and domestic animals in the treated areas, as well for personnel applying them. The use of herbicides shall be approved by the Engineer.
4.4.2. RE-VEGETATION PLANTING AND SITE RESTORATION
The Contractor shall ensure the following provisions are included in its Plan:
 Re-vegetation shall start at the earliest opportunity. Appropriate local native species of vegetation shall be selected for the compensatory planting and restoration of the natural landforms;

 Restoration of cleared areas such as borrow pits no longer in use, disposal areas, site facilities, workers’ camps, stockpiles areas, working platforms and any areas temporarily occupied during construction of the Project works shall be accomplished using landscaping, adequate drainage and re-vegetation;

 Spoil heaps and excavated slopes shall be re-profiled to stable batters, and grassed to prevent erosion;

 Restoration and re-vegetation shall be carried out timely for the exposed slopes/soils and finished areas shall be reinstated in order to achieve the stability of slopes and maintain soil integrity;

 All affected areas shall be landscaped and any necessary remedial works shall be undertaken without delay, including grassing and reforestation;

 Trees shall be planted at exposed land and on slopes to prevent or reduce land collapse and keep stability of slopes;

 Soil contaminated with chemicals or hazardous substances shall be removed and transported and buried in waste disposal areas;

 All affected areas should be landscaped and any necessary remedial works should be undertaken without delay, including grassing and reforestation;

 Water courses should be cleared of debris and drains and culverts checked for clear flow paths;

 All sites should be cleaned of debris and all excess materials properly disposed;

4.5. WASTE MANAGEMENT PLAN
The Contractor shall develop a Waste Management Plan that addresses the issues described below.
4.5.1. LIQUID WASTE DISPOSAL
The Waste Management Plan address the following requirements:
 The design of temporary drainage systems, sanitary facilities (toilets) at worker camps and at the construction sites and the proposed disposal site;

 Describe the measures for proper collection and treatment of wash water from equipment maintenance;

 There shall be no direct discharge of wastewater, wash water, chemicals, spoils, waste oil, muddy materials or solid waste to the rivers and canals;

 Indicate the system proposed and the locations of related facilities on site, including mobile toilets and temporary latrines, wastewater storage areas, retention ponds etc;

 Disposal of lubricating oil and similar materials, onto the ground or into water bodies is prohibited.

 Liquid material containment areas shall not drain directly to surface water.

 Liquid material storage containment areas shall be equipped with drains regulated by valve system and the valve shall be maintained locked in the closed position with supervisory control of the key.

 Lubricating and fuel oil spills shall be cleaned up immediately and spill clean-up materials shall be transported and disposed by an authorized firm (via a contract with the Contractor) to an approved landfill or disposal sites of Hai Phong City.

 Ensure that run-off from the construction sites is not deposited directly into any watercourse and shall indicate the system proposed, including the locations of retention ponds and other facilities.

4.5.2. SOLID WASTE DISPOSAL:
The Waste Management Plan address the following requirements:
 Management of domestic wastes generated at worker camps and offices with provisions for temporary holding, recycling and hauling and disposal of residual wastes by a licensed waste contractor.

 Management of industrial wastes, construction wastes, spoils and muddy materials. The plan should identify disposal sites for spoils and muddy materials. The disposal site for muddy materials shall comply with the following criteria: it is not located within 200 m from

residential areas, schools, aquaculture farms and within 500 m from water intake points for domestic use and historic, religious sites with proper design of bottom and walls to avoid leakage of effluent into surrounding areas

 Management of hazardous materials should comply with the national technical regulations and requirements.

 There shall be no burning of oily wastes and /or vegetation wastes.
4.5.3. WASTE WATER DISPOSAL
All water and waste products arising on the Site shall be collected, removed from the Site via a suitable and properly designed temporary drainage system and disposed of at locations and in manners that will cause neither pollution nor nuisance The Site Plan shall indicate the system proposed and the locations of related facilities on the Site, including latrines, holding areas, etc. There shall be no direct discharge of sanitary or wash water to surface water. Disposal such as, but not limited to, lubricating oil and similar materials, onto the ground or into water bodies shall be prohibited. Liquid material storage containment areas shall not drain directly to surface water.

Liquid material storage containment areas equipped with drains shall be valved and the valve shall be maintained locked in the closed position with supervisory control of the key. Lubricating and fuel oil spills shall be cleaned up immediately and spill clean-up materials shall be maintained at the

storage area. Spill clean-up materials shall be disposed in approved landfill or disposal sites.
4.5.4. SOLID WASTES
The Contractor shall submit a method statement detailing a solid waste control system (storage, provision of bins, site clean-up schedule, bin clean-out schedule, etc.) to the Engineer for approval. This plan shall address the following:
 All facilities are maintained in a neat and tidy condition and the site shall be kept free of litter;

 Measures shall be taken to reduce the potential for litter and negligent behaviour with regard to the disposal of all refuse. At all places of work, the Contractor shall provide litter bins, containers and refuse collection facilities for later disposal;

 Solid waste may be temporarily stored on site in a designated area approved by the

Engineer for collection and disposal through a licensed waste collector

 Waste storage containers shall be covered, tip-proof, weatherproof and scavenger proof.

The waste storage area shall be fenced off to prevent wind-blown litter;

 No burning, on-site burying or dumping of waste shall occur;

 All solid waste shall be disposed of offsite at an approved disposal site. The Contractor shall supply the Engineer with certificates of disposal;

 Random disposal of solid waste in scenery areas shall be strictly prohibited;

 The Contractor shall identify and demarcate disposal areas clearly indicating the specific materials that can be deposited in each;

 Recyclable materials such as wooden plates for trench works, steel, scaffolding material, site holding, packaging material, etc shall be collected and separated on-site from other waste sources. Collected recyclable material shall be re-used for other projects or sold to a waste collector for recycling.
4.5.5. DOMESTIC WASTE
The Contractor shall provide refuse bins, all with lids, for all worker camps and construction sites. Refuse shall be collected and removed from all facilities at least twice per week. Domestic waste shall be transported to the approved refuse disposal site in covered containers or trucks. Collection and disposal of domestic waste shall be coordinated with local authorities.
4.5.6. HAZARDOUS AND CHEMICAL WASTES
The waste management plan shall address the following:
 All hazardous and chemical waste (including waste bitumen, etc.) shall be disposed of at an approved hazardous landfill site and in accordance with legislative requirements. The Contractor shall provide disposal certificates to the Engineer;

 The removal of asbestos-containing materials or other toxic substances shall be performed and disposed of by specially trained workers;

 Used oil and grease shall be removed from site and sold to an approved used oil recycling company;

 Under no circumstances shall the spoiling of tar or bituminous products be allowed on the site, over embankments, in borrow pits or any burying;

 Unused or rejected tar or bituminous products shall be returned to the supplier’s production plant;

 Used oil, lubricants, cleaning materials, etc. from the maintenance of vehicles and machinery shall be collected in holding tanks and sent back to the supplier or removed from site by a specialist oil recycling company for disposal at an approved hazardous waste site;

 Informing the Engineer of any accidental spill or incident;

 Initiate a remedial action following any spill or incident;

 Provide a report explaining the reasons for the spill or incident, remedial action taken, consequences/damage from the spill, and proposed corrective actions.
4.6. MATERIAL HANDLING, USE AND STORAGE MANAGEMENT PLAN
The Contractor shall ensure the following provisions are included in its Plan:
4.6.1. TRANSPORTATION
The Material Handling, Use and Storage Management Plan shall address the following:
 The Contractor shall ensure that all suppliers and their delivery drivers are aware of procedures and restrictions (e.g. restricted areas);

 Material shall be appropriately secured to ensure safe passage between destinations during transportation;

 Loads shall have appropriate cover to prevent them spilling from the vehicle during transit;

 The Contractor shall be responsible for any clean-up resulting from the failure by his employees or suppliers to property secure transported materials.

4.6.2. HAZARDOUS AND CHEMICAL SUBSTANCES
The Contractor shall provide a method statement detailing the hazardous substances / material that are to be used during construction, as well as the storage, handling, and disposal procedures for each substance / material and emergency procedures in the event of misuse or spillage that might negatively affect the environment. In general terms, the following activities shall be carried out:
 All hazardous material / substances (e.g. petrochemicals, oils, etc.) shall be stored on site only under controlled conditions;

 All hazardous material / substances shall be stored in a secured, appointed area that is fenced and has restricted entry. All storage shall take place using suitable containers to the approval of the EMS;

 Hazard signs indicating the nature of the stored materials shall be displayed on the storage facility or containment structure;

 Fuel shall be stored in a steel tank supplied and maintained by the fuel suppliers. The tank shall be located in a secure, demarcated area.

4.6.3. ACID SULPHATE SOILS (ASS)
Disturbance of the acid sulphate soil will generate a series of environmental impacts. Exposure of the ASS to air will cause oxidation of the sulphide bearing minerals, leading to production of H2SO4 (sulphuric acid). Leaching of the oxidized products by rainwater will cause acidic surface run-off. This run-off can cause lowering of pH of the receiving body of water. The lowering of acidity can be accompanied by the increased solubility of metallic elements such as iron and

aluminum and such water quality condition is harmful to aquatic organisms and plants. Considering that the overall land uses of the Project alignment are agriculture and aquaculture, the potential impacts of the disturbance of acid sulphate soil can be significant if not properly managed.

The extent of treatment is unknown until the excavated embankment material has been tested. As such, a Provisional Sum has been included to allow for the treatment of soils should this be discovered during construction. Method of treatment will depend on the level of risk. Payment through the Provisional Sum will be in accordance with the General Conditions of Contract.
4.6.4. SURFACING MATERIALS
The Material Handling, Use And Storage Management Plan shall address the following:
 Over spray of bitumen products outside of the road surface and onto roadside vegetation shall be prevented using a method approved by the SES;

 When heating of bitumen products, the Contractor shall take appropriate fire control measures; Stone chip / gravel excess shall not be left on road / paved area verges. This shall be swept /raked into piles and removed to an area approved by the SES;

 Water quality from runoff from any fresh bitumen surfaces shall be monitored by the SES

and remedial actions taken where necessary.

4.6.5. CEMENT AND CONCRETE BATCHING
The Material Handling, Use And Storage Management Plan shall address the following:
 Concrete mixing directly on the ground shall not be allowed and shall take place on impermeable surfaces to the satisfaction of the SES;

 All runoff from batching areas shall be strictly controlled, and cement-contaminated water shall be collected, stored and disposed of at a site approved by the SES;

 Unused cement bags shall be stored out of the rain where runoff won’t affect it;

 Used (empty) cement bags shall be collected and stored in weatherproof containers to prevent windblown cement dust and water contamination. Used cement bags shall not be used for any other purpose and shall be disposed of on a regular basis via the solid waste management system (see Waste Management Plan);

 All excess concrete shall be removed from site on completion of concrete works and disposed of. Washing of the excess into the ground is not allowed. All excess aggregate shall also be removed.
4.7. ECOLOGICAL MANAGEMENT PLAN
The Contractor shall ensure the following provisions are included in its Plan: