Environmental Management

Introduction

What is meant by Environment?

It is the surrounding in which we live; land, water, atmosphere, animals, trees etc, which can be affected by our activities

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All our activities produce waste in solid, liquid & gaseous form, which if discharged to the environment in excess quantities beyond its assimilation capacity can lead to pollution

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Environmental Policy

Daewoo Engineering & Construction Co., Ltd. recognizes that the Earth environment is essential and will comply with the following environmental policy for planning and conducting the construction business for human survival not only for present but also for future generation.

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Environmental Management Point

• Minimize construction waste, effluent and promote recycling
• Prevent environmental pollution
• Provide adequate information, training and supervision
• Measure, monitor and review environmental performance

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What is Pollution?

This is a state in which the environment is contaminated with toxic materials, discharged by our activities, which are harmful to the flora, fauna & living beings

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• Air Pollution
• Water Pollution
• Land Pollution
• Noise Pollution

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Spill

What is meant by spill?

• This refers to the sudden or accidental discharged of contaminant into the environment
• Spill Control Plans

Three processes are in place for effective management of waste water to avoid land surface and ground water contamination.

- Batching plant process water

- Treatment of batching plant toxic waste water before discharge

- The high pH value is neutralized with the use of Aluminum Sulfate

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Use Of Absorbents/Neutralizers

• Battery charging operation

- Sulphuric acid is being neutralized with soda ash before disposal

• Materials for Clean-up & Control

- Saw dust

- Dry sand

- Rags

- Oil boom

- Absorbent Pad

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Spill Response Guide

Once a spill is noticed:

• Shout spill! Spill!! Spill!! To attract others

- Notify all concerned (Including HSE)

- Identify source of spill or leaks

- Stop source of spill

- Contain spill

- Clean-up

- Disposal of contaminated materials

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Response Flow Chart

• Release To Water or Soil Contamination

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Oil Diesel

- Call departmental manager on channel xxx.

- Call safety on channel x

- Call Company emergency unit on channel xx

- Identify the source/shut down the source.

- Contain the spread

- Arrange for clean up

- Follow disposal procedures

- Make written report

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What Is Waste?

• Left over materials from the office, site and camps that are not useful in its present state and needs to be disposed off

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Types Of Wastes

• Wood
• Used engine oil
• Used batteries
• Used tyres
• Oily cotton rag
• Oil contaminated sand
• Metal scrap

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• Gaskets, glass waste etc.
• Sewage
• Kitchen waste
• Clinical waste
• Paper
• Carton
• Plastic

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Common wastes that are generated in the project are;

Waste Management

• Involves all the necessary procedure, practices, storage methods etc. That are put in place for the effective control of waste

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Waste Management

Waste Stream

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Waste

Generation

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Waste Segregation

Waste

Storage

Waste

Transfer

Waste

Disposal Team

Waste

Disposal

Waste

Documentation

Waste Disposal

Sewage - Treated & discharged

Kitchen waste - Incinerated

Clinical waste - Incinerated

Paper waste - Incinerated / Recycled

Plastic waste - Recycled

Wooden waste - Recycled

Used engine oil - Disposal by approved

Agency

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Waste Disposal

Used batteries - Recycled

Used tyres - Disposed

Oily cotton rag - Incinerated

Metal scrap - Recycled

Gasket - Disposed

Glass wastes - Recycled

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Waste Management Tips

• Reduce production of waste
• Segregate waste
• Recycle waste
• Disposed off waste
• Conserve resources

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Waste Management

• Waste management aim is to gradually reduce waste with the aim of eliminating those that have the potential to cause harm to people and the environment.
• It is criminal offence to dispose hazardous waste to nature or cause harm to the environment.

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Environmental Control

Dust Pollution during Construction Phase

• Adequately sprinkle the area with water especially the road under construction to suppress or minimize dust. Water sprinkling of construction areas shall be done twice a day, morning and afternoon on a regular basis.

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Body of Water

• Protect all forms of body of water around the site that will be affected during the construction period this includes river, sea, swamp or lakes.
• No waste water coming from the construction site will be discharged to this body of water without proper treatment or tested to be safe and will not harm any form of living things in the environment.

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Environmental Control

Noise Control

• Administer a continuing, effective hearing conservation program, as described in the procedure, whenever employee noise exposures equal or exceed an 8-hour time-weighted average sound level of 85 decibels measured.

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Environmental Control

• Hazards of Exposure to noise
• Exposure to noise can have the following consequences;
• Causes annoyance and irritation
• Affects concentration and efficiency
• Causes fatigue and accident proneness
• Prevents ear from registering other sounds, instructions and warnings
• Short exposure to excess noise causes damage to the inner ear and permanent loss of hearing

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Environmental Control

• Limiting Exposure to noise can be reduced by:
• Engineering and control methods (e.g. installation of silencer, sound controlled equipment enclosure, replacing equipment with a low noise producing equipment if possible)
• Job rotation
• Providing rest rooms or acoustic refuges
• Re-arranging work locations
• PPE (ear plug, ear muffs)

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Environmental Control

Soil Erosion

• The excavated or embanked area, shoulder on side slopes or borrow pits are the area where soil erosion are likely to occur during heavy rain. To avoid soil erosion, all exposed surface shall be regressed or covered by stone pitching, lining concrete, spill way and compaction of the embankment area shall be carried out.

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Operating Procedures:

• The operating procedures for various operations such as Acid neutralization, Auto Effluent Grease pit operation, Batching plant effluent neutralization should be displayed at the corresponding locations. The operating personnel in the corresponding locations should be trained to operate the above procedures.

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Summary

• Minimizse construction waste, and then dispose it to the designated area
• Implement waste segregation ang recycling
• Minimize the source of pollution by establishing target of saving energy and resources
• Strive that there is no environmental accident and violation of environmental legislation and regulation
• Environmental policy shall be open to the public as well as internal
• Each employee should understand and comply with the policy, and shall actively participate in and make utmost efforts to the environmental management activity

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