Course Textbook

Godish, T$.,$ Davis, W$.$ T$.,$ & Fu$,$ J$.$ S$.(2015).$ Air quality $(5$th ed$.).$ Boca Raton, FL: CRC Press.

Our course project will be to develop a document titled A Permit By Rule $($PBR$)$ Application for an Interior Surface Coating Facility that will serve as a simulation of our work as a contract environmental engineer to a small vehicle body shop located in the state of Texas.

The Scenario:

You have been contracted with a vehicle body repair shop named Texas Car Body Repairs, USA to engineer and write a state $($Texas$)$ air permit application for a carefully designed interior lining $($painting$)$ facility. According to Texas state laws and EPA laws, the facility must have an air permit before construction begins. Once the facility is completed, the construction air permit will then become the operational air permit for the facility. As a result, your client wants the air permit application to automatically align the interior surface coating facility into operational compliance with state and federal air quality laws. Consequently, it is extremely important for you to write the air permit application to meet the air permit criteria using the state guidance document and considering the equipment and chemicals already planned for the facility operations.

Your client has presented you with the following specifications regarding the facility operations plan:

Interior Liner Coating Material

$10$ gallons coating$/$vehicle

$2$ gallons of solvent$/$vehicle

Vehicle Lining Application

Apply interior liners to two $(2)$ vehicles$/$day

Work five $(5)$ hours$/$day and four $(4)$ days$/$week Vehicle Lining Curing

Vehicle Lining Curing

Cure interior liners of two $(2)$ vehicles$/$day

Work five $(5)$ hours$/$day and four $(4)$ days$/$week

Interior Liner Cure

Heater fuel source is natural gas$-$fired drying oven

Heater generates $2\mathrm{.}1$ million $($MM$)$ Btu$/$hr at maximum $2,500$ hrs$/$year

Vehicle Lining Design

Cross$-$draft air plenum

Vehicle interior is the spray area

Exhaust Fan

$10,000$ ft$3/$min $($CFM$)$

$1$ exhaust fan

Air Makeup Unit

$5760$ ft$3/$min $($CFM$)$

$1$ air makeup

Filter Openings

$20\mathrm{.}0$ ft$2$ each

Two $(2)$ filter openings

Coating WV

VOC content

$2\mathrm{.}8$ lb$/$gal coating Coating VM

Water Content

Per gal$/$coating

$1\mathrm{.}0$ lb$/$gal

Water Density

Per gal$/$water

$8\mathrm{.}34$ lb$/$gal

Coating VW

Water volume

Calculation

Exempt$-$solvent Content

Per gal$/$coating

$0\mathrm{.}5$ lb$/$gal

Exempt$-$solvent Density

Per gal$/$exempt solvent

$6\mathrm{.}64$ lb$/$gal

Coating Ves

Exempt solvent volume

Calculation

The client has designed an interior coating spray painting system that allows the interior of a vehicle to be coated $($such as for new vehicles, or vehicles being restored after fire damage or other catastrophic interior damage$).$ The operations will involve a stripped$-$down vehicle body being brought into the facility$$s shop. The shop is a steel building with a finished concrete floor and a paint booth for each vehicle. The vehicle will be placed in the spray booth. The booth will be opened at one end of the booth for makeup air. The exhaust air will flow through an exhaust chamber at the other end of the vehicle $($see Cross$-$Draft Automotive Spray Booth in Appendix F of the TCEQ Regulatory Guidance Document$).$ For each vehicle, once the liner application operations are completed the forced curing $($drying$)$ operations will immediately commence.

Instructions:

$1.$ Closely read the Required Reading assignment from your textbook, the TCEQ $(2011)$ document, and the Unit Lesson in the Study Guide.

$2.$ Open the Unit VII Study Guide, read the Unit VII Unit Lesson, then review the calculations demonstrated and explained regarding calculations for emissions of products of combustion from heaters and ovens for our scenario.

$3.$ Make your Unit VII work your sixth level $1$ heading titled $$ Heater and Oven Combustion Emissions $.$ Describe and demonstrate $($illustrate$)$ the calculations for the following for this section of your project: $($a$)$ nitrous oxides $($NOx$),($b$)$ carbon monoxide $($CO$),($c$)$ particulate matter $($PM$),($d$)$ volatile organic compounds $($VOC$),$ and $($e$)$ sulfur dioxide $($SO$2)$ for BOTH hourly emissions $($short$-$term$)$ in lbs$./$hr$.$ AND annual $($long$-$term$)$ emissions in tons$/$year$.$ Your response should be in a minimum one$-$page, double$-$spaced document.