Erosion Control Plan

1JABATAN PEMBANGUNAN BANDAR, PERBADANAN PUTRAJAYA

17 – 19 APRIL 2006

SHERATON HOTEL, LABUAN


By

Ir. Razali bin JarminB.Sc. (Hons), M.Sc. (Geotechnical),P.Eng.

Timbalan Pengarah

Bahagian Kawalan Infrastruktur & Penyelenggaraan

Jabatan Pembangunan Bandar

Perbadanan Putrajaya


Area : 4,932 hectares

Population : 330,000

Residential Units : 67,000 units

Land Use :-

5.3 %

2.9 %

25.8 %

0.2 %

10.1 %

18.2 %

37.5 %

Government Offices

Commercial

Residential

Civic & Cultural

Public Amenities

Infrastructure &

Utilities

Open Space


GOALS OF PUTRAJAYA DRAINAGE MASTER PLAN

To provide a cost effective maintainable drainage systemd.

To provide for public convenience and safety from floodingc.

To mitigate increased runoff and pollutant exports to external

catchments. (provision of detention ponds)

b.

To preserve the environmental values of the lake system.a


DRAINAGE PATHS AND THE OPEN SPACE

NETWORK

The drainage infrastructure proposed for Putrajaya to achieve the goals

comprises of the following system :-

Detention basins (dry and wet type)d.

Gross Pollutant Traps (GPTs)e.

Water Pollution Control Ponds / Wetlandsf

Culvertsc.

Open channelsb.

Stormwater pipes (conduits) – closed systemsa


Detention

Pond

Detention

PondDetention

Pond

DETENTION PONDS (TO BE CONSTRUCTED)

Detention

Pond

Detention

Pond


PLOT AREA




TO ACHIEVE THIS, WE NEED CONTROLS IN DEVELOPMENT


LEGISLATION

�TOWN AND COUNTRY PLANNING ACT 1976 (ACT 172)

�STREET, DRAINAGE AND BUILDING ACT 1974 (ACT 133)

�EARTHWORKS (PERBADANAN PUTRAJAYA) BY-LAWS 1996

�ENVIRONMENTAL QUALITY ACT 1974 (ACT 127)

�ENVIRONMENTAL QUALITY (DELEGATION OF POWERS)

(PERBADANAN PUTRAJAYA) ORDER 2002


RECOMMENDATION FOR

INFRA WORKS FOR CF

APPLICATION

PROJECT

COMPLETION

PROJECT CLOSURE

PLAN (PCP)

SITE INSPECTION AND

MONITORING

DURING

CONSTRUCTION

STAGE

ENVIRONMENTAL

MANAGEMENT AUDIT

REPORT (EMAR)

DETAIL INSPECTION OF

EARTHWORKS PLAN AND

SPECIFICATIONS

BEFORE APPROVAL

BEFORE

CONSTRUCTION

ENVIRONMENTAL

MANAGEMENT

COMPLIANCE PLAN

(EMCP)

EARTHWORKS REPORTPLANNING STAGEENVIRONMENTAL

MANAGEMENT REPORT

(EMR)


1.1 TOWN AND COUNTRY PLANNING ACT 1976

1.0 PLANNING STAGE

SECTION 19(1)

No person other than local authority shall carry out any development

unless planning permission has been granted.

SECTION 27(6)

On conviction can be fine not exceeding RM 50,000.00 and to a further

fine which may extend to RM 1,000.00 for each day during which the

development is carried out after the first conviction for the offence.


1.2 PLANNING STAGE CONTROL

SECTION 21A(1) – DEVELOPMENT PROPOSAL REPORT

For erosion and sediment control , the report should contained

the following :-

�Measures for the preservation of its natural topography

�The proposed earthworks and a

�A description on how the earthworks to be carried out.

�Environmental Control Plan


2.1 STREET, DRAINAGE AND BUILDING ACT 1974

2.0 EARTHWORKS APPROVAL STAGE

SECTION 70A (1)

No person shall commence or carry out or permit to be commenced or

Carried out any earthworks without having first submitted to the

local authority plans and specifications in respect of the earthworks and

obtained the approval of the local authority thereto.

SECTION 70A (9) - PENALTY

Upon conviction, liable to an imprisonment for a term not exceeding

5 years or fine not exceeding RM 50,000.00 or both


2.2 STREET,DRAINAGE AND BUILDING

(COMPOUNDING OF OFFENCES)

(FEDERAL TERRITORY OF PUTRAJAYA) BY-LAWS 2003

Can be Compounded – not exceeding 50% of the maximum amount

of fine (i.e. RM 25,000.00 )

2.3 EARTHWORKS (PERBADANAN PUTRAJAYA)

BY-LAWS 1996

Upon conviction shall be liable to a fine not exceeding RM 2,000.00

And shall also be liable to a further fine not exceeding RM 100.00 for

Every day during which the offence is continued after the conviction.


2.0 SUBMISSION OF PLANS

PLANS FOR EARTHWORKS APPROVAL SHALL BE SUBMITTED

BY A REGISTERED PROFESSIONAL CIVIL ENGINEER AS

REQUIRED BY THE LAW

Plans submitted by the Consultant should indicate the following :-

1. Cut / Fill Area

2. Location of Silt Traps and Wash Trough

3. Location of Temporary Drainage System etc.

4. And any other measures to control erosion during construction and

5. Permanent protection upon completion of the earthworks.

** (Participant can refer to the Earthworks By-Laws for further details)


EXAMPLE : EROSION CONTROL PLAN SUBMISSION


EXAMPLE : TYPICAL DETAILS OF SILT TRAP


SILT TRAP

EARTHWORKS CONTROL

Function :-

To control the flow of sediment and polluted

water from entering the main water system

eg. river, streams, main drains

Design of Silt Traps :-

As per MASMA Guidelines

Monitoring :-

Ensure that the Developer/Contractor desilt

the silt trap as and when required to ensure

its efficiency.

Spillway

Filter Material

Dry Type


Well maintained Silt Trap

Silt Trap not properly maintained

(Action can be taken by the Local Authority

by issuing Compliance Instructions or fine

the Developer / Contractor as stipulated in

the Act / By-Laws )


Silt trap – Wet Type

Spillway


TEMPORARY EARTH DRAINS

EARTHWORKS CONTROL

Function :-

To direct the flow of surface water to the silt

trap or sediment basin.

Monitoring :-

Ensure that the Developer/Contractor

maintain the temporary drain regularly.

Overflow pipe

Filter Material

Temporary Earth drains


SILT FENCE

EARTHWORKS CONTROL

Function :-

To control the flow of sediments into

temporary drains / waterways / lakesOverflow pipe

Filter Material


SILT FENCE

EARTHWORKS CONTROL

Overflow pipe

Filter Material




WASH TROUGH

EARTHWORKS CONTROL

Function :-

To ensure that vehicles leaving the

site is clean and does not dirty the

public road.

Overflow pipe

Filter Material


PROTECTION TO SLOPES

EARTHWORKS CONTROL

All exposed slopes to be

turfed

immediately (preferred

method : Hydroseeding)

to control erosion.

Overflow pipe

Filter Material



3.0 ENFORCEMENT

REGULAR INSPECTIONS BY THE AUTHORITY TO THE CONSTRUCTION

SITE IS A MUST TO ENSURE THAT THE DEVELOPER / CONTRACTOR

FULFILL THE REQUIREMENTS AS PER APPROVED PLAN.

ACTION AS STATED IN THE ACT OR BY-LAWS SHALL BE ENFORCED

IMMEDIATELY TO ENSURE THAT THE DAMAGE DONE BY NOT

FULFILLING THE REQUIREMENTS IS MINIMAL.


DESILTING WORKS


DETENTION POND - DESILTING WORKS (POST CONSTRUCTION)


DETENTION POND – AFTER DESILTING WORKS


GROSS POLLUTANT TRAP

PERMANENT CONTROLS

Function :-

To control the flow of

sediment and rubbish

from entering the main water

system eg. river, streams,

main drains, lakes

Spillway

Filter Material


RUBBISH SCREEN/ SEDIMENT TRAP

PATENTED GROSS

POLLUTANT TRAP

(eg. ECOSOL, CDS, ROCLA)


FOR YOUR ATTENTION

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Erosion Control Plan

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