From the Report Executive Summary (please refer to the document to see the full text, including footnotes):
Aluf Plastics Division of API Industries Inc. (Aluf Plastics) operates a plastic bag manufacturing facility in Orangeburg, NY. The facility is located at 2 Glenshaw Road, Orangeburg, NY 10962, Rockland County. The Aluf Plastics facility currently operates under New York State Department of Environmental Conservation’s (NYSDEC) Air State Facility Permit ID 3‐3924‐00190/00006.
Aluf Plastics, in response to community concern regarding odors in the vicinity, conducted stack test evaluation runs for toxic organic pollutants on two of the on‐site stack outlets on June 28 and 29, 2017. The stack testing procedures and laboratory analytical protocols were developed with the direction and approval of NYSDEC. Aluf Plastics and NYSDEC have requested that the data from the stack assessments be used to determine whether facility emissions had the potential to impact nearby receptors. Aspen Outlook, LLC (Aspen Outlook) presents the following analysis of the data using U.S. Environmental Protection Agency (EPA) and NYSDEC approved air dispersion modeling techniques to evaluate the potential impacts from the emitted pollutants at the Aluf Plastics site.
This report provides a summary of the modeling procedures and results. This report summarizes the methodology and results of the air dispersion modeling analysis conducted to estimate worst‐case impacts of 1‐hour and annual averaged toxic pollutants, in comparison to the NYSDEC short
term and annual guideline concentrations (SGCs and AGCs). In addition, modeled concentrations have been compared to Odor Thresholds identified in a June 6, 2016 Memorandum from Donald Brenner, P.E., L.L.B. The modeling analysis was prepared in accordance with Appendix W of the Guideline on Air Quality Models (Revised) and NYSDEC Guidelines on Dispersion Modeling Procedures for Air Quality Impact Analysis (DAR‐10).
Toxic air pollutant emissions from sources at the Aluf Plastics Facility were modeled to determine the maximum short‐term and annual ground‐level concentrations (1‐hour and annual averaging period). The resulting maximum ground‐level concentration values associated with as‐measured
in‐stack concentrations do not exceed the corresponding SGCs or AGCs or the Odor Thresholds for any of the pollutants measured.