The objective of this research was the adequacy and application of a waste landfill quality index
(IQAR) as a management tool for the open-air dump in the municipality of Castanhal-PA. For
this, a socio-environmental diagnosis was carried out in the research area, in the Urban Solid
Waste (USW) management and management system in Castanhal-PA and in the recycling
companies in the municipality. A simple checklist was applied to identify the potential socioenvironmental damage resulting from the inadequate disposal of USW in the open-air dump, to
the secretariats linked to sanitation in the municipality, collectors and the community of the
agrovila Boa Vista. To qualitatively and quantitatively assess the environmental damage
generated, the Global Damage Index (IGD) was applied. In order to determine the IQAR, the
results obtained were analyzed and interpreted, for later framing the open-air spillway under
adequate or inadequate conditions. The indices that make up the IQAR refer to the
characteristics of the location, infrastructure implemented and operational conditions.
According to the data obtained, the secretariats sampled have flaws due to the lack of
elaboration, monitoring, evaluation and updating of the municipal Master Plan, which is
expressed by the lack of information on issues related to the leak or projects in progress. The
data obtained indicated that the Directly Affected Area (ADA) and the limits used for the
disposal of MSW correspond to an area of 54 hectares. Irregularities and the lack of technical
criteria in the forms of final disposal of USW and tailings at the ADA are the main factors that
promote socio-environmental damage. As for the most significant environmental damages in
the ADA, according to the sampling of collectors, they refer to the possibility of
pollution/contamination of the soil (100%) by the inadequate disposal of waste and tailings
from the various commercial and industrial activities of the municipality, burning of waste
(64%), deforestation (52%), water contamination (86%) and air pollution (34%). After an
analysis carried out in loco, the community Boa Vista was identified as an Area of Direct
Influence (AID), approximately 1km from the spillway, the extensions of the water bodies, due
to constant problems related to contamination/pollution from the runoff of surface water and
groundwater that can take different directions, and the unpleasant odor by the predominant
direction of the winds towards that community. The data obtained to identify the socioenvironmental damages in the dump, from the application of the IGD referring to the indicators
of the physical environment, indicators of the biotic and abiotic environment and of the
operational conditions, indicated that all the items listed suffer damages of direct and indirect
order, with emphasis on infrastructure implemented (-0.50), water (-0.51), fauna (-0.63) and
flora (-0.59). Thus, the general value of the IGD (-0.44) shows the precarious conditions of all
the indicators evaluated, with damages ranging from -0.33 (operating conditions) to -0.63
(fauna). The results obtained with the application of the IQAR for the characterization of the
structural, operational aspects of the locational aspects of the Castanhal-PA open-air dump,
indicated alarming conditions in all indicators with predominant assessments referring to
inadequate, absent or insufficient conditions. According to the methodology of CETESB
(2020), with the value of the IQAR (0.4), the open-air dump in Castanhal-PA has inadequate
operating conditions. In order to minimize the damages diagnosed, it is necessary, from the
beginning, to know the characteristics of the waste produced in that municipality, the
gravimetric composition and, as a matter of urgency, an adequate system of final disposal of
MSW must be implemented with: licensing of the activity, delimitation of the area, physical
fencing with screens, inspection and periodic maintenance of the site and access roads.
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