1

Helms, Greg

From: Regulatory Assistance Office@DTSC <RAO@dtsc.ca.gov>

Sent: Tuesday, September 01, 2015 4:36 PM

To: Helms, Greg

Subject: RE: Hazardous waste research project

Are you at your desk for me to call? 

Gloria.Conti@dtsc.ca.gov 

Regulatory Assistance Officer 

714-484-5400 

DTSC Regulatory Assistance Officers provide informal guidance only about management of 

hazardous waste for the convenience of the public. Such oral or electronic mail advice is not binding 

upon DTSC, nor does it have the force of law. If you would like a formal opinion on a matter by DTSC, 

please contact the responsible program office directly. You should also refer to the statutes and 

regulations, DTSC Policies and Procedures, and other formal documents. If you would like to provide 

us feedback please do so at: 

http://calepa.ca.gov/Customer/CustForm.pdf 

From: Helms, Greg [Helms.Greg@epa.gov] 

Sent: Tuesday, September 01, 2015 1:28 PM 

To: Regulatory Assistance Office@DTSC 

Subject: RE: Hazardous waste research project

Gloria‐

I took a look at the DTSC database website, but it links to the National BRS website; I did not see that California

separately identifies non‐RCRA, California only, hazardous wastes.

________________________________

Gregory Helms

U.S. EPA

Waste Characterization Branch

Office of Solid Waste and Emergency Response

phone: 703‐308‐8845

fax: 703‐308‐0514

helms.greg@epa.gov

Address for regular/USPS mail:

1200 Pennsylvania Ave. NW

Mail Code 5304P

Washington, DC 20460
2

Address for overnight/hand delivery mail:

Two Potomac Yard

2733 S. Crystal Dr.

5th Floor; N‐5611

Arlington, VA 22202  

See OSWER's new LEAF leach test methods at:

http://epa.gov/wastes/hazard/testmethods/sw846/new_meth.htm

For an overview of hazardous waste regulation see the RCRA Orientation Manual, at:

www.epa.gov/epawaste/inforesources/pubs/orientat/

From: Regulatory Assistance Office@DTSC [mailto:RAO@dtsc.ca.gov]  

Sent: Tuesday, September 01, 2015 11:52 AM

To: Helms, Greg

Subject: RE: Hazardous waste research project

Greg,  

Have you checked the Biennial report information by any chance?  

Gloria.Conti@dtsc.ca.gov

Regulatory Assistance Officer 

714-484-5400 

DTSC Regulatory Assistance Officers provide informal guidance only about management of 

hazardous waste for the convenience of the public. Such oral or electronic mail advice is not binding 

upon DTSC, nor does it have the force of law. If you would like a formal opinion on a matter by DTSC, 

please contact the responsible program office directly. You should also refer to the statutes and 

regulations, DTSC Policies and Procedures, and other formal documents. If you would like to provide 

us feedback please do so at: 

http://calepa.ca.gov/Customer/CustForm.pdf

From: Helms, Greg [Helms.Greg@epa.gov]

Sent: Tuesday, September 01, 2015 8:00 AM

To: Regulatory Assistance Office@DTSC

Subject: RE: Hazardous waste research project

Gloria—

Thanks for getting back to me.

Ideally I would like to find data on California regulated solid corrosive wastes that that answer the questions: How

much? What is it or what process generated it? and Who generated it?

But, I will take whatever data you may have, at whatever level of detail/resolution it has.

Thanks.

________________________________

Gregory Helms
3

U.S. EPA

Waste Characterization Branch

Office of Solid Waste and Emergency Response

phone: 703‐308‐8845

fax: 703‐308‐0514

helms.greg@epa.gov

Address for regular/USPS mail:

1200 Pennsylvania Ave. NW

Mail Code 5304P

Washington, DC 20460

Address for overnight/hand delivery mail:

Two Potomac Yard

2733 S. Crystal Dr.

5th Floor; N‐5611

Arlington, VA 22202  

See OSWER's new LEAF leach test methods at:

http://epa.gov/wastes/hazard/testmethods/sw846/new_meth.htm

For an overview of hazardous waste regulation see the RCRA Orientation Manual, at:

www.epa.gov/epawaste/inforesources/pubs/orientat/

From: Regulatory Assistance Office@DTSC [mailto:RAO@dtsc.ca.gov]  

Sent: Monday, August 31, 2015 7:28 PM

To: Helms, Greg

Subject: RE: Hazardous waste research project

Greg,  

I can think of a few different places where this type of information could be found. We have (RCRA & non‐RCRA) waste

code information on our HWTS database, the only question however is how do we know what specific California code

they used.  

I was recently at a class where we discussed Cal waste code 141 as being a good potential code, but would others use

that code? I don't think I would have intuitively gone to that waste code.  

Are you specifically looking for "total" numbers or more detailed information?

Gloria.Conti@dtsc.ca.gov

Regulatory Assistance Officer 

714-484-5400 

DTSC Regulatory Assistance Officers provide informal guidance only about management of 

hazardous waste for the convenience of the public. Such oral or electronic mail advice is not binding 

upon DTSC, nor does it have the force of law. If you would like a formal opinion on a matter by DTSC, 

please contact the responsible program office directly. You should also refer to the statutes and 

regulations, DTSC Policies and Procedures, and other formal documents. If you would like to provide 

us feedback please do so at: 
4

http://calepa.ca.gov/Customer/CustForm.pdf

From: Helms, Greg [Helms.Greg@epa.gov]

Sent: Monday, August 31, 2015 1:22 PM

To: Regulatory Assistance Office@DTSC

Subject: Hazardous waste research project

To: DTSC‐ 

I am working on a research project regarding corrosive hazardous waste, and see that there is a difference between the

federal definition and the California state regulatory definition for corrosivity. The California regulations go beyond the

federal definition, and include within their scope solid material as well as liquids, whereas the federal definition

regulates only liquid or aqueous waste.  

Do you collect any data that is in an available form on California corrosive hazardous wastes that might allow someone

to distinguish between liquid/aqueous wastes and corrosive wastes that are solid materials?

If not, is there someone on your staff that may be knowledgeable about the kinds of wastes generated that would be

available to talk about this question?

Thanks for your help.

________________________________

Gregory Helms

U.S. EPA

Waste Characterization Branch

Office of Solid Waste and Emergency Response

phone: 703‐308‐8845

fax: 703‐308‐0514

helms.greg@epa.gov

Address for regular/USPS mail:

1200 Pennsylvania Ave. NW

Mail Code 5304P

Washington, DC 20460

Address for overnight/hand delivery mail:

Two Potomac Yard

2733 S. Crystal Dr.

5th Floor; N‐5611

Arlington, VA 22202  

See OSWER's new LEAF leach test methods at:

http://epa.gov/wastes/hazard/testmethods/sw846/new_meth.htm

For an overview of hazardous waste regulation see the RCRA Orientation Manual, at:

www.epa.gov/epawaste/inforesources/pubs/orientat/