Nick G.
Senior Engineer at Yorke Engineering, LLC- Claim this Profile
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Bio
Credentials
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Transportation Worker Identification Credential (TWIC)
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Experience
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Yorke Engineering, LLC
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United States
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Environmental Services
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1 - 100 Employee
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Senior Engineer
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Jul 2015 - Present
AIR DISPERSION MODELING • Performed air dispersion modeling using various agency-approved computer programs, such as AERSCREEN, Hotspot Analysis and Reporting Program (HARP) and AERMOD. This includes using facility and equipment data to model criteria pollutants and toxic air contaminants, perform health risk analyses, and determine areas of high concern for both permitting and CEQA. • Projects included modeling of criteria pollutants and toxic air contaminants for equipment such as internal combustion engines, boilers and heaters, air pollution control equipment, process tanks, power generation equipment, and cooling towers. • Projects have involved various types of sources and facilities, including food processing plants, schools, chemical plants, refineries, wastewater treatment plants, and power plants. AIR PERMITTING • Air permit applications and analyses for a variety of emissions equipment and operations. • These sources have included IC engines, boilers, turbines, manufacturing process lines, storage tanks, fuel dispensing systems, and various air pollution control systems. These permits have required BACT analyses, air dispersion modeling, HRAs, and regulatory compliance analyses. EMISSION INVENTORIES AND ANNUAL EMISSIONS REPORTING • Prepared air emission inventories used for annual emissions reporting, permitting, HRAs, and air dispersion modeling. • Calculation of emissions was done using manufacturer’s data, local agency emission factors, federal EPA emission factors, agency-approved emission estimate tools and agency-approved source tests. MOBILE SOURCE COMPLIANCE ASSISTANCE • Provided clients with assistance in determining their compliance status and schedule with the CARB On-Road and Off-Road regulations for clients with different fleet sizes. Conducted numerous fleet average calculations for various fleet sizes, including large fleets with more than 50 units. Show less
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University of California, Riverside
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United States
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Higher Education
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700 & Above Employee
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Doctor of Philosophy (PhD) in Chemical and Environmental Engineering
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Oct 2010 - Aug 2015
My research evaluates the impact of new fuels and control on emissions from several significant sources: marine vessels, harbor craft, heavy-duty vehicles, commercial cooking and natural gas fired turbines. PM and air toxics released to the atmosphere adversely impact air quality and human health. My dissertation examined the benefits of new fuel when used in ocean going vessels (OGVs) and harbor craft. In one project, gaseous and particulate matter emissions were measured at sea aboard a very large crude carrier (VLCC) to evaluate a novel, low-sulfur, heavy fuel oil (HFO) as a potential replacement for marine gas oil (MGO). Results showed that both NOx and PM2.5 emissions were still ~4% and ~69% lower with MGO compared to low sulfur HFO. Another project quantified the benefits of a hydrotreated algae fuel was characterized when used in a marine diesel generator aboard a Stalwart class marine vessel. NOx emissions showed slight benefits while PM2.5 emissions were similar when switching from the ultra-low sulfur diesel fuel (ULSD) to a blend with the hydrotreated algae diesel fuel. Finally, a selective catalytic reduction (SCR) and diesel particulate filter (DPF) aftertreatment controls installed aboard a tugboat led to significant reductions of NOx (~92%) and PM2.5 (~96%) emissions. My dissertation characterizes the effectiveness of commercial cooking technologies on the physical and chemical nature of particle mass, particle number and gaseous toxics from commercial cooking operations. Finally, my research describes improved methodologies for characterizing PM emissions from natural gas fired turbines. Findings include that PM emissions from natural gas turbines are very low, with the effluent below national ambient air quality standards. The effects of varying dilution parameters such as dilution ratio, residence time, relative humidity and dilution temperature on particle mass from these sources were further characterized in this dissertation. Show less
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Cummins Inc.
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United States
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Motor Vehicle Manufacturing
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700 & Above Employee
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Emissions Development Co-op
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Jun 2014 - Jan 2015
Studies were conducted at the Cummins Technical Center (CTC). Submitted four technical reports on PM and PN measurements from Heavy Duty diesel and natural gas engines. Contributed to the improvement of low PM mass measurement variability. Specific responsibilities include setting up and troubleshooting particle mass and particle number instruments, planning studies, collecting and analyzing data, writing technical reports and presenting and disseminating results to customers. Studies were conducted at the Cummins Technical Center (CTC). Submitted four technical reports on PM and PN measurements from Heavy Duty diesel and natural gas engines. Contributed to the improvement of low PM mass measurement variability. Specific responsibilities include setting up and troubleshooting particle mass and particle number instruments, planning studies, collecting and analyzing data, writing technical reports and presenting and disseminating results to customers.
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University of California, San Diego
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United States
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Medical Practices
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1 - 100 Employee
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Undergraduate Student Researcher
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Jun 2008 - Aug 2010
Development of a cost effective, miniaturized black carbon sensor to measure black carbon emissions in rural India from traditional and smokeless cooking practices. Development of a cost effective, miniaturized black carbon sensor to measure black carbon emissions in rural India from traditional and smokeless cooking practices.
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Education
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2010 - 2015
University of California, Riverside
Doctor of Philosophy (PhD), Chemical and Environmental Engineering -
2008 - 2010
University of California, San Diego
B.S. Chemical Engineering, Chemical Engineering
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