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Environmental
Division
Air Quality Monitoring
Programme -
CAMP DATA
CAMP - Phase I
Scope :
Preliminary assessment of the air quality
of the Colombo City using Sulphation Rate (SR) and Dust Fall
(DF) to measure the Sulphar and dust level of the ambient
air.
Duration : March 1989 - August 1991
Sampling : The Colombo City is divided into 13
planny zones by the Urban Development Authority (UDA). In each
planning zone sampling device was sired to every cover
industrial, commercial, residential areas and traffic
intersections.
The criteria for
deterring sampling locations :
|
Area covered by each unit |
70 ha (average) |
|
Population covered by each unit |
13000 (average No) |
|
Distance between two adjacent units Km |
average - 0.8
range - 0.6 -
1.2 |
A total of 49 locations were selected in the
city and sixty units were installed. The number of sampling devices
placed, depended on the size of the population and area of the
planning zone.
| PLANNING UNIT |
EXTENT (ha) |
POPULATION |
NO OF SAMPLING
UNIT |
Kollupitiya (KP)
Bambalapitiya
(BP)
Wellawatte (WW)
Narahenpitiya (NP)
Kirulaponne
(KN)
Borrella (BR)
Cinnamangardens (CG)
Dematagoda
(DG)
Suduwella (SW)
Grandpass (GP)
Mattakkuliya
(MK)
Kotahena (KH)
Kochchikade (KK) |
291
238
335
354
381
156
343
285
214
248
380
170
159 |
55223
29434
55259
32940
49603
32630
19611
68781
56236
63291
69160
39897
93785 |
4
4
4
3
2
3
2
5
5
5
5
3
4 |
Summary and
Conclusion :
Out of the 49 locations, 8 stations were identified
as having unsatisfactory values, 24 stations as having moderate
values and 17 stations as having excellent values of SR and DF for
air quality. Unsatisfactory locations were situated near traffic
intersections or industrial areas.
CAMP - Phase II
Scope : The Second Phase of the
Colombo Air Quality Monitoring Programme (CAMP - II) was started in July
1992 to qualitatively analyze the ambient level of SO2, NO2, Lead and SPM
at Seven (07) selected location within the City of Colombo.
Duration :
July 1992 - September 1993.
Sampling & Analysis :
Locations were selected to cover critical and moderate
areas, which was identified by the CAMP - PHASE I study and samples were collected on 8
hourly basis, every 8th day to analyzed SO2, NO2, Lead and SPM in Colombo Air by using
wet chemical methods. The sampling locations and the analytical methods were summarized in Table (01) & Table (02)
respectively.
Table (01): Locations Description;
| L1. |
Traffic Police Station , Colombo 11. |
| L2. |
Sarasavipaya, Maradana Juntion, Colombo 10.
|
| L3. |
Lanka Tractors Ltd, Nawala Road, Colombo 05. |
| L4. |
ICTAD Sub Office, Baseline Road Colombo 08. |
| L5. |
Aitken Spence (Pvt) Ltd, Sri Wickrama Mawatha, Colombo 15. |
| L6. |
Milagiriya Church, Colombo 04. |
| L7. |
Academy of Administration Studies, Longdon Place, Colombo 07. |
Table (02): Pollution Parameter and Analytical Methods;
| Parameters |
Analytical Method |
|---|
| Sulfur Dioxide (SO2) |
West &
Greek method |
| Nitrogen Dioxide (NO2) |
Saltzmann method |
| Particulate Lead (Pd) |
Hi-volume sampling & Colorimetry |
| Suspended Particulate Matter (SPM) |
Hi-volume sampling & Gravimetry |
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