Services

What We Do

Commercial Drone Services

Our FAA Part 107 licensed Pilot in Command has flown unmanned and fixed wing aircraft for over 20 years. We have published in peer reviewed journals using our novel drone-based applications. 

  • Commercial Real Estate Photography and VIdeography
  • Construction Surveillance and Management
  • Site Take-Off/Quantities using Pix4D
  • Thermal inspections and analysis (New!)

Air Dispersion Modeling

We do advanced numerical modeling of stationary and non-stationary emission sources for regulatory and safety reviews. We have over 10 years of experience modeling oil and gas processes as well as heavy industries.

  • Flares and well blow-outs
  • Hydrogen sulfide analysis
  • Odor Studies
  • Industrial pollution transport

SLAB

The SLAB model is a Gaussian plume model developed by the Lawrence Livermore Lab in 1992 that treats denser-than-air releases by solving the one-dimensional equations of momentum, conservation of mass, species, and energy, and the equation of state. SLAB handles release scenarios including ground level and elevated jets, liquid pool evaporation, and instantaneous volume sources. The model handles continuous and instantaneous releases, converting calculations from a plume during release to a puff model after the release ends.

AERMOD

AERMOD is a steady-state Gaussian-based dispersion model developed by  the AERMIC (American Meteorological Society (AMS)/United States Environmental Protection Agency designed for short-range (up to 50 kilometers) dispersion of air pollutant emissions from stationary industrial sources. It is currently the USEPA’s preferred regualtory model.

CALPUFF

CALPUFF is a non-steady puff model that calculates complex wind fields typically found in mountainous areas originally developed for the  California Air Resources Board but later adopted by the US Environmental Protection Agency. Digitized local terrain and geophysical data are incorporated into the process during the development of the meteorological model using the Terrain Elevation Data Processing (TERREL), and other preprocessors. Digital terrain files were downloaded from the Shuttle Radar Topography Mission (SRTM3) Global Coverage (~90 m) Version 2 database. The Global Land Cover Characteristics (GLCC) database maintained by the US Geological Survey (USGS) provided land use data. CALPUFF uses time based meteorological data from observations or generated with prognostic forecasting models. While not the USEPA’s prefered model, CALPUFF is a recommended alternative for log-range (greater than 50 km) and complex dispersion analysis.