Question details

General considerations for Operation
$ 10.00

Course Textbook

Godish, T., Davis, W. T., & Fu, J. S. (2015). Air quality (5th 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 2.1 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 ft3/min (CFM)

1 exhaust fan

Air Makeup Unit

5760 ft3/min (CFM)

1 air makeup

Filter Openings

20.0 ft2 each

Two (2) filter openings

Coating WV

VOC content

2.8 lb/gal coating Coating VM

Water Content


Per gal/coating


1.0 lb/gal

Water Density


Per gal/water


8.34 lb/gal

Coating VW


Water volume



Exempt-solvent Content


Per gal/coating


0.5 lb/gal

Exempt-solvent Density


Per gal/exempt solvent


6.64 lb/gal

Coating Ves


Exempt solvent volume





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.


Unit V Mini Project

As a continuation of our course project due in Unit VIII, A Permit By Rule (PBR) Application for an Interior Surface Coating Facility, complete the next section, “Operational Face and Filter Velocities,” of your proposal by following the instructions carefully, and then submit your continued draft for grading.


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

2. Open your proposal draft from Unit IV and make any improvements to your draft using your professor’s feedback from the Unit IV project assignment.

MEE 6501, Advanced Air Quality Control 5

3. Open the Unit V Study Guide, read the Unit V Lesson, then review the calculations demonstrated and explained regarding face velocity calculations and filter velocity calculations for our scenario.

4. Make your Unit V work your fourth level 1 heading titled “Operational Face and Filter Velocities.” Describe and demonstrate (illustrate) the calculations for the following for this section of your project: (a) calculate the face velocity and (b) filter velocity of the spray booth in a minimum one-page, double-spaced document.


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