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BEST PRACTICES
BMP is a methodologies or practice that is used to abate pollution.
In general, it includes on-ground structural works and also
non-structural measures such as educational approach, policy and
regulatory, guidelines, maintenance, monitoring and research. The
structural and non-structural measures can be combined to prevent
and reduce pollution, especially pollution from the non-point
sources. BMP must be tailor suit and adapt to local condition and
practice as the target pollutant and its dispersal factor varies
accordingly.
In current
practice, many BMPs has been developed and each of them address
specifically to their respective sector, i.e. BMP for fisheries, BMP
for agriculture, etc. The consolidation of these BMPs and its
linkage shall be viewed in a broad manner should its full
implementation are to be taking place. Last but not least, legal
tools are extremely important in exercising all the beautifully
documented practices.
Lembaga Urus Air Selangor will adopt best practices as legal tools
to prevent pollution; where non-point sources pollution is our first
priority, as we have Department of Environment to control the point
sources.
NPS pollution can results from runoff, or groundwater seepage from
industrial, municipal, agricultural or aquaculture sites and others.
It is not from a single point, such as an industrial pipe outfall.
It often goes unnoticed; however it is extremely widespread and
contributes towards a significant level of seriousness of our
overall water pollution problem.
NPS Best Management Practices (BMP) means choices of preventive,
remedial, and management measures that reduce the availability,
detachment, and transport of pollutants to both ground and surface
waters; and of course economical alternatives should be taken into
consideration. The choices of techniques to abate NPS pollution must
be based on site conditions. The performance of techniques should
also be evaluated against costs for a number of items such as
materials, installation and maintenance costs to be cost-effective
in the long-term.
Here are some examples on major source of NPS and its general BMP
that has been practiced worldwide.
|
Source of NPS |
BMP |
Roads and Streets
|
·
dispose of
paints, solvents, and petroleum products at approved
disposal sites, not in storm drains or street gutters
·
fix automobile
oil and fuel leaks
·
stop oil
dumping on rural roads
·
construct a
sediment catch basin to collect storm water runoff
·
reduce road
construction runoff by building terraces and catch basins,
and by planting cover crops (grass) |
|
Agriculture and livestock
Runoff
from barnyards, feedlots and cropland carries away manure,
fertilizers, ammonia, pesticides, livestock waste, oil, and
toxins from farm equipment, soil and sediment.
Nitrogen
from fertilizers, manure, waste and ammonia turns into
nitrite and nitrate and can affect water quality as well as
aquatic habitats.
|
·
read and
follow all labels and ask for application directions
before using
chemicals, fertilizers, and
pesticides.
·
use
conservation tillage, contour farming, strip cropping, and
crop rotation
·
institute
pasture management
·
leave filter
strips and field borders along wetlands and streams
·
use cover
crops to reduce erosion and terrace areas prone to erosion
·
fence
waterways to reduce
riparian zone impact
from livestock
·
construct
livestock waste collection and treatment ponds for confined
livestock
·
Use organic
fertilizers that release nutrients more slowly.
·
Recycle oil,
antifreeze, batteries, fertilizer, pesticides and other
chemicals and materials as much as possible.
·
Control runoff
from exposed soil, feedlots and barnyards so that it doesn't
get into drinking water, streams and lakes.
|
Logging
|
·
monitor water
entering and leaving cut areas
·
prevent
sediments from reaching streams and
lakes by building
terraces, catch basins, and natural filters
·
leave a
vegetative buffer zone in riparian areas
·
maintain and
restore effective watersheds
·
implement a
plan to reduce erosion from roads
|
Mining
|
·
monitor all
water entering and leaving mine sites
·
intercept and
reroute uncontaminated water away from contaminated areas
·
construct
catch basins and terraces, and plant cover crops, to catch
sediment and prevent erosion
·
catch and
treat contaminated water
·
stabilize
stream channels
·
stabilize
mining waste areas to prevent release of
materials to
streams
·
maintain
buffer strips along streams
|
Construction
Construction and clearing land often put sediment in rivers
and bodies of water. Oil, debris, paint and other harmful
chemicals also can runoff with water and sediment from
construction sites.
|
·
implement
erosion and sediment control plan (ESCP is always be
referred as best management practices)
·
plant ground
cover to reduce erosion
·
dispose of
solvent, paint, and other wastes at approved disposal sites
·
build
temporary, small dikes to slow and catch runoff
·
build sediment
catch basins to collect construction runoff
·
build earth
beams and filter runoff before water enters a stream
|
Residential
Fertilizers, weed killer, insecticides, and fungicides,
loose grass clippings and leaves, soil from exposed areas in
the yard, pet droppings, poorly maintained septic systems,
detergents from washing a car, common household cleaners,
improper disposal of paint, oil and other chemicals.
|
·
read labels
prior to using pesticides, fertilizers or chemicals
·
use
nonchemical fertilizers (compost) on gardens
·
dispose of
household hazardous waste at approved disposal sites
·
maintain
septic tanks if sewers are not available
·
Keep roadways,
street gutters and walkways swept and clear of soil, grass
and debris
·
Use
environmentally safe cleaning products that don't contain
phosphorus or other toxic chemicals.
·
Cut down on car
use, check and repair oil or other leaks and take batteries
and excess motor oil to auto shop for proper disposal.
·
Use biological
methods and traps to reduce insects, weeds and fungus
instead of toxic insecticides and herbicides. Never apply
pesticides or herbicides near wells. Plant grass or plants
in exposed soil areas.
·
Monitor and
maintain septic systems for leaks and overflows.
·
Pick up and
properly dispose of pet droppings.
|
Aquaculture
Runoff
from untreated aqua farm can brings along nitrogen
compounds, liquid waste, chemicals and other substances that
may cause water quality deterioration, both surface and
groundwater. |
·
Harvest,
stockpile and dispose of animal manure from concentrated
animal feeding operations by minimize discharge of nitrogen
pollutants by leaching and runoff.
·
Convey
aquaculture facility wastewater to settling basins or lagoon
·
Convey
aquaculture waters and runoff to agricultural crop lands
·
Convey
aquaculture waters to groundwater recharge system
·
Collect and
convey liquid wastes to a storage facility or treatment
·
Design and
construct appropriate storage or treatment basins
·
Divert,
collect and convey storm runoff to storage facility
·
Convey and
construct appropriate diversion structures
·
Seal ponds and
lagoons for water loss
·
Close
facilities in a manner to minimize the discharge of nitrogen
pollutants |

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