Pre-Treatment

Restaurants

100

Where should you collect a sample from?

Sample Port 

200

How far away does the sample port need to be away from Grease Interceptor/Trap?

3-5 Feet 

300

Where should the flow control be installed in a Grease Trap

before inlet cleanout 

400

How far should the baffle plumbing need to be from the floor?

20" from the floor 

500

What is the purpose of the Internal Plumbing and baffle wall in a Pre-Treatment device?

Retention time & to completely separate both compartments 

Industries

100

What are the pH levels we look for?

5 through 11

200

How many samples are collected in a 24hr composite sample?

2xhr

Total 48 samples

300

What is the difference between a categorical and local control point? 

Categorical: after the process

Local: c/o where restrooms and all other process meets

400

How do you collect a sample for oil & grease?

Grab with stainless steel cup

500

What are the Federal, State, and Local regulations that pre treatment follows?

EPA, TCEQ, MSSO

Permits

100

What is the meaning of "GW' when  looking over a blueprint?

Grease Waste

200

What triggers the grease trap/interceptor sizing?

Change of Ownership/Seating Capacity/ Menu 

300

What's the minimum size pre treatment device used on a tunnel carwash?

4000 gal

400

How do you measure a round style grease trap?

3.14*R^2/231

500

What is the formula to sizing a pre treatment device for a commercial business?

seating x peak factor x waste flow x retention time x storage 

Inspections

100

What policy states that all kitchen fixtures need to be routed to the pre-treatment device 

Policy 2.07(J)

200

Static water lever should be at what measurement?

Outlet should be 2-3" lower than the inlet  

300

Concrete used to make a pre treatment device should be a minimum of _______ PSI?

4000 PSI

400

How do you properly eliminate a grease trap according to 30(TAC) Part 1 Chapter 285 Subchapter D Rule 285.36?

Cap off all plumbing, pump out all waste, and fill with biodegradable material measuring less than 3 inches (free of organic and construction debris)

500

How do properly install 2 50gal tanks in series?

Air Intake, Flow Control, Inlet C/O, Trap, C/O, Trap, Sample Port, Ventilation with C/O

Miscellaneous

100

What is the goal of Pre-Treatment?

To prevent the introduction of pollutants 

200

What does policy 4.09(C) state?

Cleanout must be hydro jetted to remove FOG buildup 

300

What is the proper sizing method for a carwash?

No drive thru carwashes

300 Mud Traps

1000 Grit 1st Bay

500 each additional bay

400

What year was the clean water act implemented in?

   A) 1981

   B) 1972

   C) 1994

   D)2008

1972

500

In what section of the City Ordinances does it discuss

prohibited discharges?

Section 106-182