Environmental Management Framework (emf) coastal embankment improvement project phase-i project (ceip-i) April 29, 2013 Dhaka Bangladesh Water Development Board Ministry of Water Resources Government of the People’s Republic of Bangladesh

Appendix 12: Pest Management Plan

A Pest Management Plan should be prepared for specific areas where needed, considering the type of pest/insects and their possible impacts. Plant diseases and insect pests control should use precaution and microbiological processes. The 1st species of first and second category of pesticides are forbidden to use. The first year of the planting farmyard manure will be applied and then the organic fertilizers will be used after. These will improve the physical and chemical properties of soil, and cause slight adverse environmental impact. Besides, the packing receptacle of the pesticides and fertilizers should be collected and treated centralized, and also the vessel must be forbidden to wash in the river or lake.

1. 
   Culture Method
   

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  Tillage operation
  
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  Selection seeds and cultivars
  
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  Destruction of alternative host
  
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  crop production
  
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  Use of resistant variety
  
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  Nutrient Management
  
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  Strip farmers
  
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  Pruning and thinning
  
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  Variation in timing of plant and harvest
  

2. 
   Mechanical Method
   

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  Trenching
  
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  Burring
  
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  Sieving
  
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  Netting & bagging
  

3. 
   Physical method
   

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  Temperature
  
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  Moisture
  
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  Sound
  
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  Electromagnetic filed
  

4. 
   Biological Method
   

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  Parasitoids & predators
  
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  Microbial agent
  

5. 
   Chemical Method
   

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  Insecticides
  
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  Attractant
  
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  Repellent
  
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  Sterilants
  

Integrated Pest Management (IPM)

Light trap is another technique for controlling pests under IPM. This system is used in the agriculture fields especially on HYV rice and vegetables for attracting insects. At the base of the light trap, there is a sheet generally made of steel that slopes downward. The light trap is installed on a water basin. At night, when the light trap is emitting light,

• 
  Conservation of beneficial insect, animal
  
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  There are many pathogen (fungi, bacteria &viruses) which can attack and kill many pests
  
• 
  There are many insectivorous plants, which also plays some role in controlling pests.
  

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  BRRI Dhan 28is moderately resistant to blast and leaf blight
  
• 
  BRRI Dhan 29 is moderately resistant to leaf blight
  

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  Use of healthy Seeds
  
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  Proper crop rotation
  
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  Line sowing with proper spacing
  
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  Proper management of water in the crop field
  
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  proper crop rotation
  
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  Weed free cultivation
  
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  Use of balasnced fertilizer
  
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  Water management by planting at appropriate distance
  

• 
  By cutting infected leaves or plant parts
  
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  By using hand net
  
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  By perching in the field
  
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  By using light trap
  

5. Chemical control management

Chemical control method shod be applied only when the other control methods fails to control the pest. That means pesticides should be used only as a last resort and in doing so right pesticide with right dose at right time and with right method of application should be taken in to consideration. Pesticides should be handled with proper care because all pesticide are poisonous.

Appendix 13: Generic Polder Safety Management Plan

1. 
   Introduction
   

Polder Safety Management Plan is a process that incorporates polder safety measures as a part of the day to day operation. A p[older safety management program comprises policies, procedures and investigations which minimises the risk and fatality of polder/embankment failure. A polder safety management program includes:

Its benefits are that the:

• BWDB is aware that the polder complies with current engineering standards for safety

• BWDB is assured that the polder is operated in a safe manner

• BWDB has the condition of the polder assessed on a regular basis

• BWDB is prepared for an emergency situation at the polder

• risk of polder failure is minimized.

2. 
   Safety Surveillance Requirement
   

The purpose of a polder safety surveillance program is to avoid failure of the dam, by giving early warning of any kind of symptom of trouble as early as possible. The main causes of failure, which can often be avoided by effective surveillance and

maintenance programs, are:

• seepage/leakage;

• slips/slides

• erosion;

• cracking;

• movement/deformation of embankment;

• structural defects (ie outlet pipes, spillway); and

• spillway or outlet blockage.

Following a regular routine like that outlined above should enable local community and BWDB to become aware of faults before partial or total failure occurs. Times when additional inspections are recommended include:

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  before a predicted major rainstorm (check embankment, spillway and outlet pipe);
  
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  during and after severe rainstorms (check embankment, spillway and outlet pipe);
  
• 
  during and after a severe windstorm (check upstream slope for damage from wave
  
• 
  action); and
  
  • 
    after any earthquake or tremor, whether directly felt or reported by local news media (check all aspects of the polder at the each location).
    
  • 
    Inspections should be made during and after construction
    

3. 
   Emergency Action Plan
   

1. If failure is imminent (eg. water is rising and approaching the top of the embankment, or heavily coloured water is leaking from the embankment or foundation) then you should immediately contact:

• A suitably qualified engineer, to seek advice;

• Police, BWDB

• people downstream has to be informed to take safe shelter, to inform them that you have concerns but are working on the problem.

2. If failure appears imminent or is actually in progress (eg. water is spilling over the embankment, or erosion of the embankment, spillway or foundation is occurring). If there is no chance to save the dam, inform the following at once:

• Downstream neighbours has to be informed to take safe shelter;

• Police;

• State Emergency Service;

• BWDB

3. Where major flooding is expected or in progress upstream of the dam site,then inform the following:

• Downstream neighbours;

• BWDB

• State Emergency Service.

4. 
   Documentation for a safety management program
   

A polder safety management program should ultimately result in four levels of documentation being available for each polder. These are:

1. Investigation, Design, and Construction Documentation including Data Book, Design Report and As-Constructed Details (or Construction Report)

2. Detailed Operating and Maintenance Manuals (DOMMs) which will include standing operating procedure for hydraulic structures

3. Monitoring and Evaluation Reports which will include polder safety surveillance

4. Emergency Action Plan