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of solid waste generated and collected from
the households, commercial establishments,
institutions and the markets were computed
based on the data obtained from the General
Services Office. The rates of solid waste
generation for both urban and rural barangays
were gathered. The composition of solid waste
was also determined. Secondary data were
obtained by reviewing reports from the General
Services Office and other studies related to
solid waste management. Wastes on collection
routes and points were examined to validate
secondary data. Wastes in garbage trucks and
in dumpsite were also examined for further
Figure 1. Barangay map of Tuguegarao City
Interviews of personnel involved in
the city solid waste management including
collection crews were conducted. Rapid rural
appraisal was employed to further elicit data.
Population Data
Population data for every barangay
for the year 2007 was obtained from the City
Planning and Development Office (CPDO) of
Tuguegarao City. The spatial distribution of the
population is shown in Figure 3. The population
data was projected at an average annual
growth rate of 1.02% as determined by the
National Statistics Office. The population data
was used to estimate the volume of solid waste
generated by the households in every barangay
and the projected population data was used to
forecast the trend of solid waste generated by
the households in every barangay.
Rate, Weight and Volume of Solid Wastes
Per capita waste generation rate
was obtained by getting samples of 1 to 11
households depending on the number of
J.B. Guzman
households for both urban and rural barangays.
The sample size was obtained by using the
Slovin’s formula. Household members for each
sample were recorded. Waste generated by
these households in kilograms for a period
of 7 days was measured. The average waste
generation per household member per day or
the per capita waste generation in kg/cap/day
is equal to the total waste generated by the
household divided by the number of household
member divided by 7 days.
Weight of solid waste generated by
households in each barangay for urban and
rural barangays was computed by multiplying
the number of population by the corresponding
per capita rate of waste generation for urban
and rural barangays respectively. Weight
of solid wastes generated from commercial
establishments, institutions and the market
were estimated from the corresponding
percentages of waste collected by garbage
trucks as determined by the General Services
Office of Tuguegarao City.
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