Site Characterization and Associated Disposal Costs for Illegal Dumpsites Located in the Municipality of La Granja, Chile
Abstract Chilean legislation dictates that Municipalities are responsible for household solid waste management, but this doesn’t include the clean-up of illegal dumpsites. These in-city dumpsites usually are located on public roads, parks or abandoned sites; have a wide variety of origins, from household trash to business waste, and feature a high component of construction debris. One of the main problems that municipalities have managing these sites is that when they are cleaned, the dumpsites immediately reappear. Therefore, a site survey and visual characterization was performed for these illegal dumpsites at the Municipality of La Granja, and a cost analysis associated with the constant clean-up costs was performed. La Granja Municipality has an established clean-up program with a frequency that varies from one to three withdrawals a week per dumpsite. Santiago is Chile's capital and is divided into 32 municipalities, the general population of the city is 5.250.565 habitants according to the 2017 census. La Granja is one of Santiago’s municipalities; according to the last census, it has 116.571 inhabitants and a total of 34.423 households divided into 69 neighbourhoods. The social economical income of the municipality corresponds to medium low to lower level. The study detected 35 critical sites that were catalogued as recuring dumpsites. The mayor cause of these dumpsites corresponds to illegal dumping of construction waste, mayor appliance and household waste, and only one dumpsite didn’t present construction debris during the length of the study. The average volume measured in site, for most of the dumpsites varied from 1 to 3 m3 and only 2 sites exceeded 8 m3. The most important characteristics of the dumpsites were the ease accessibility (82,4%), followed by the total lack of public illumination, high vehicular traffic and to or more intersections (67,7%). The equipment and personnel cost were estimated for the clean-up service of the 35 dumpsites. The cost analysis showed that the associated cost of the clean-up corresponds to a 5,8% of the municipal budget for solid waste management. As a result of the study, 4 sites were intervened through the generation of green area or small parks, with an emphasis in the protection or blocking of the access and roadside.