BAY AREA AIR QUALITY MANAGEMENT DISTRICT
375 Beale Street, Suite 600. . San Francisco, CA 94105. . (415) 749-4990. . Fax (415) 749-5030
DATA FORM SC
Solvent Cleaning Operations
Plant No.
Source No
Application No.
New
Modified
Retro
(for office use only)
Form SC is for solvent cleaning operations only. All other operations involving solvents, use Data Form S. Form instructions
are on the following page. PLEASE READ FIRST.
SIC Number
Plant No.
1. Business Name
2. Date of Initial Operation
Source No
S- (leave blank if unknown)
3. Make, Model, and Rated Capacity of Equipment
4. Operating time:
hours/day
days/week
weeks/year
5. Typical % of total annual usage:
Dec-
Feb
%
Mar-May
%
Jun-Aug
%
Sep-Nov
%
6. Does solvent evaporation emissions at this source vent directly to room atmosphere or to an abatement device or
through a stack? (Check one)
7. Net solvent usage for 12-month period (See instructions below)
8. Solvent used most: Trade name
% of total used
9. Solvent used 2nd most: Trade name
% of total used
(Attach a Material Safety Data Sheet for each solvent)
8a) Material Code ________; Density ____________lb/gal (District use only)
9a) Material Code ________; Density ____________lb/gal (District use only)
10. If this is a wipe cleaning operation, check this box and stop here. This form is now complete.
11. Container: Length in. width in. liquid volume gal. freeboard height in. (See instructions)
12. Freeboard ratio = Freeboard height divided by smaller of the length or width =
13. General information:
a. Is there a container for the solvent and for the articles being cleaned?
yes no
b. Does the container have a cover?
yes no
c. Is a solvent spray used?
yes no
If yes, is spray "atomized" or a "shower" type? __________________________________________________________
d. Is there a conspicuous label summarizing District operating requirements?
yes no
e. How are cleaned parts drained?
14. Equipment type: Check one: Vapor Degreaser (Part A) Conveyorized Degreaser (Part B) Cold Cleaner (Part C)
Part A: Open-Top Vapor Degreaser (Attach copy of equipment specifications or manufacturer's data sheet.) Does the
degreaser have the following?
15. Condenser flow switch (except on refrigerated degreasers)?
yes no
16. Spray safety switch for degreasers with open area greater than 432 in
2
?
yes no
17. Vapor level control thermostat?
yes no
For large Vapor Degreasers with open area greater than 1550 in
2
:
18. A refrigerated chiller (in addition to the cooling coils)?
yes no
19. Carbon adsorption or other control system?
yes no
Part B: Conveyorized degreaser (Attach copy of equipment specifications or manufacturer's data sheet.) Does the degreaser
have the following?
20. Condenser slow switch (except on refrigerated degreasers)?
yes no
21. Spray safety switch?
yes no
22. Vapor level control thermostat for boiling degreasers?
yes no
23. Drying tunnel or rotating basket?
yes no
24. Open area of the degreaser entrance
in
2
exit
in
2
For large Conveyorized Degreasers with an air-vapor interface area greater than 3100 in
2
:
25. A refrigerated chiller (in addition to the cooling coils)?
yes no
26 Carbon adsorption or other control system used?
yes no
Part C: Cold Cleaner (Attach copy of equipment specifications):
27. Is air agitation used?
yes no
28. Is a water cover used?
yes no
29. A refrigerated chiller, carbon adsorption, or other control?
yes no
Person completing this form:
Date:
(revised 4/12/16)
INSTRUCTIONS FOR COMPLETING DATA FORM SC
Complete one Data Form SC for each solvent cleaning operation.
SIC and Plant Numbers may be left blank if unknown.
Please read the following instructions prior to completing this form.
Line 6 If emissions from this source vent to other than room atmosphere, check either the source,
abatement device, or emission point to which they vent; complete the appropriate source,
abatement, or emission point form(s) in addition to Data Form SC.
Line 7 Annual net solvent usage is the quantity of solvent lost to the atmosphere in a 12-month
period. Net solvent usage equals the quantity of solvent purchased and placed in the
container minus the quantity of recovered or recycled solvent. Net solvent usage is also
equal to the quantity of "make-up" solvent placed in the container. If annual net solvent
usage is not available, please estimate or project the annual solvent usage.
Line 8
&
Line 9
Provide the trade name(s) of solvent(s) used. If more than two solvents are used, attach
additional Material Safety Data Sheets (MSDS). "Percent of total used" means the percent
of the total solvents used at this source.
Line 11 Freeboard height: (A) of vapor degreasing tanks is the distance from the solvent vapor-air
interface to the top of the degreasing tank; (B) of conveyorized degreasing tanks is the
distance from the top of the solvent or solvent vapor-air interface to the bottom of the lowest
opening in the degreaser tank; (C) of cold cleaning tanks is the distance from the top of the
solvent or solvent drain to the top of the tank.
DEFINITIONS
Open-Top Vapor Degreaser: Any batch loaded, boiling solvent degreaser.
Conveyorized Degreaser: Any continuously loaded, conveyorized solvent degreaser either boiling
or non-boiling.
Cold Cleaner: Any non-boiling solvent degreaser, including, but not limited to, spray sinks, spray
booths and batch-loaded dip tanks.
Wipe Cleaning: That method of cleaning which utilizes a material such as a rag wetted with a
solvent, coupled with a physical rubbing process to remove contaminants from surfaces.
Freeboard Height: Of open-top vapor degreasing tanks, the distance from the solvent vapor-air
interface to the top of the degreaser tank. Of conveyorized degreasing tanks, the distance from the
top of the solvent or solvent vapor-air interface to the bottom of the lowest opening in the degreaser
tank. Of cold cleaning tanks, the distance from the top of the solvent or solvent drain to the top of the
tank.
Make-up Solvent: Make-up solvent is that solvent which is added to a cleaning operation to replace
solvent lost through evaporation. Where solvent is reclaimed by a commercial reclamation service,
only the net increase between solvent sent out and solvent returned shall be considered make-up
solvent.
Condenser Flow Switch: A safety switch which shuts off sump heat if condenser water fails to
circulate or rises above the designated operating temperature.
Spray Safety Switch: A safety switch which cuts off the pump of the spray applicator if the vapor
level drops below a specified level.
Vapor Level Control Thermostat: A safety switch which turns off the sump heater if the thermostat
senses vapors rising above the air-vapor interface.
(revised 4/12/16)