Abstract
A third-party-trained “Odor Patrol” program was conducted at a school that is about a one-mile distance from a landfill to clarify the odor nuisance problems from the landfill. Every 20 min from 6 to 9 a.m. on school days, the “Odor Profile Method” (OPM) was used with the landfill odor wheel to identify the odor type and intensity of each odor type. This study showed that an Odor Patrol using the OPM can accurately define odor nuisance changes over time and can be used as a method to confirm changes of odor nuisances in a field study. The Odor Patrol only found 13 data inputs of the 1000 data inputs (1.3%) for the 100-day odor monitoring with a landfill odor or trash odor that could cause odor complaints. The Odor Patrol data and the Odor Complaint data compared well. The OPM by an “Odor Patrol” could determine the contribution of the nuisance odors from 6 to 9 a.m. at the school site, about one mile away from the landfill. The study demonstrated a novel approach for odor monitoring by using the Odor Profile Method with an Odor Patrol. The OPM not only confirmed the mitigation of a landfill odor problem, but it also determined odor character, odor intensity, odor frequency and odor duration during this study period. “Landfill gas” was determined to be primarily a rotten vegetable odor with a secondary sewery/fecal odor of lower intensity, and “trash odors” were primarily a rancid and sweet odor with a secondary sewery/fecal and/or rotten vegetable odor of lower intensities generated from trash reaching the landfill. The order of intensity observed from high to low was: Trash odor (Rancid–Sweet) > Rotten vegetable > Sewery/Fecal > Rancid. Thus, trash odor is the major problematic odor from the landfill site. Quality assurance methods were used to remove local odors from the evaluation.
Highlights
Since 2009, California‘s South Coast Air Quality Management District (SCAQMD)has seen a dramatic increase in the number of complaints related to nuisance odors from a landfill
Patrol” can evaluate the odor nuisance caused by a particular odor source: i.e., determine the odor character, nuisance causedofby a particular source: i.e.,the determine the and odorduration character,ofodor odor intensity each odorant odor and determine frequency the intensity of each odorant and determine the frequency and duration of the odor probodor problem
The first objectives of the study were to determine if the “Odor Profile Method” by an “Odor Patrol” can evaluate the odor nuisance caused by a particular odor source; i.e., determine the odor character, odor intensity of each odorant and frequency and duration of the odor problem
Summary
Has seen a dramatic increase in the number of complaints related to nuisance odors from a landfill. This landfill processes one-third of the daily waste from Los Angeles County per day. When the consumer complaints reach an excessive number, and these are verified by the odor inspectors, SCAQMD considers it an odor nuisance problem. Reference [1] indicated that during the Odor Patrol time period in the previous year. Reference [1] indicated that during the Odor Patrol time period in the previous year to this study (from 2016 to 2017) “trash odor” was the primary odor. Community and inspectors for to gases are produced withinisthe landfill from anaerobic. A lower intensity, “rotten vegetable” and/or a “sewage/fecal” odor were identified either from intensity, “rotten vegetable” and/or a “sewage/fecal” odor were identified either from the trash gas or from landfill gas.
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