Need to return call by / at/between and

. Signature: Project No.: 0317.00.005. 580 Page 1 of 3
Project

Name: Nanotechnology Review

CBI?

Yes

No TELEPHONE CALL RECOR D Incoming Outgoing Date: 08/23 /2013 Time: am

pm

Company

Name: California EPA, Department of Toxic

Substances Control ERG Staff Name: Eva Knoth

Contact

Name: Suzanne Davis, suzanne.davis@dtsc.ca.gov Contact Phone
Number:

General Subject: Email Request for Information on Nanomaterials Research

TOPICS DISCUSSED AND ACTION TAKEN

Email sent on 7 / 26/13 to Bill Ryan (Bill.Ryan@dtsc.ca.gov), Jeff Wong (Jeff.Wong@dtsc.ca.gov), and Suzanne Davis (Suzanne.Davis@dtsc.ca.gov):

Dear Ms. Davis, Mr. Ryan, and Mr. Wong,

We are researching the potential presence and impact of nanomaterials in industrial wastewater discharges as part of the Clean Water Act Section 304m annual review proc ess for US EPA’s Office of Water, Engineering and Analysis Division under Contract No. EP

- C

- 12

- 021. We are doing this work on behalf of Mr. William Swietlik of the US EPA in Washington, DC.

Specifically, we are evaluating the current state of knowledge on the toxicity, analytical measurement, fate and transport, production and treatment of manufactured nanomaterials present in industrial wastewater discharges. Kurt Rindfusz, a chemical engineer and colleague at ERG, has corresponded with CalEPA DTSC staff o n research related to nanomaterials and indicated that results from the Chemical Information Call

- In may be able to provide us with some valuable insight.

Our research aims to answer the following questions:

· Are there studies on the presence of nanomaterials in industrial wastewaters? If so, what are the industries and associated nanomaterials that may have the greatest wastewater discharge impact (primary manufacturers)?

· Are there analytical techniques available to detect nanomaterials in wastewater or other water streams, such as drinking water and surface water?

Our present focus is investigating production capacities or quantities for U.S. primary manufacturers of silver,
TiO 2 and CNT nanomaterials. We understand that th is type of data is difficult to find. Our primary source is a paper published in ES&T by Hendren et al. in 2011 ( http://pubs.acs.org/doi/abs/10.1021/es103300g ). Did any manufacturers provide produ ction capacity or quantities though the call

- in program? We would also like to get a better understanding of the trends and conclusions drawn from the information gathered.

We would appreciate any assistance you can provide to help focus our research. We a ppreciate your time and

consideration.Need to return call by / at/between and

. Signature: In the mean time, if you have any questions or concerns regarding this request please feel free to follow up with William Swietlik directly at (202) 566

- 1129 or by email: swietlik.william@epa.gov

.
Sincerely,

Kim Wagoner

kim.wagoner@erg.com (703) 633

- 1620

Eva Knoth

eva.knoth@erg.com (703) 633

- 1648

Email Response on 8/23/13:

Hello Ms. Knoth,

I apologize for the delay in my reply to your email. Unfortunately, I have not been actively working on the
nanomaterial chemical call

- in. I have cc:’d Donald Owen on your request since he was reviewi ng the information submitted by nanomaterial manufacturers under the second chemical information call

- in with Bill Ryan and Dr. Wong.

I’ll try to provide some information to your questions below.

Q1. Are there studies on the presence of nanomaterials in indu strial wastewaters? If so, what are the industries and associated nanomaterials that may have the greatest wastewater discharge impact (primary manufacturers)?

A1. There were news stories on regarding nanosilver and nanotitanium dioxide a few years ago. I tried to highlight some of the articles in the attached Round_Two_Bilio.pdf that might pertain to your questions above. Also attached is a copy of the bibliography created for the carbon nanotube call

- in.
I don’t think we cam e across many research papers on the presence of nanomaterials in environmental media during the carbon nanotube call

- in but that may have been due to the relative newness of the subject at the time.

Another potential source of information is the Interna tional Council on Nanotechnology nanoEHS
Virtual Journal at http://cohesion.rice.edu/centersandinst/icon/virtualjournal.cfm

.

Q2. Are there analytical techniques available to detect nanomaterials in wastewater or other water streams, such as drinking water and surface water?

A2. The US EPA lab at UNLV had issued a screening method “APM 32 Screening Methods for Metal

Containing Nanoparticles in Water” in September 2011, EPA/600/R

- 11/096 wh ich is attached.

The ASTM Committee E56 has issued some standards which I think focus more on the characterization of nanomaterials rather than detecting the nanomaterials the environment. Katrina Varner at the US EPA UNLV laboratory is a member of this committee ( varner.katrina@epa.gov

, 702

- 798

- 2645). She may be aware of other efforts by US EPA or others to develop standards for detecting nanomaterials in the environment.Need to return call by / at/between and

. Signature:

ANSI

- NSP has set up a standards dat abase at http://nanostandards.ansi.org/tiki

- index.php and will be hosting a free webinar on October 10, 2013 at 1 pm EST and registration is available at https:// goansi.webex.com/mw0307l/mywebex/default.do?nomenu=true&siteurl=goansi&service=6 &rnd=0.42526087190735085&main_url=https%3A%2F%2Fgoansi.webex.com%2Fec0606l%2Fev
entcenter%2Fevent%2FeventAction.do%3FtheAction%3Ddetail%26confViewID%3D1236345897
%26%26%26%26site url%3Dgoansi

.

We did receive analytical information as part of our chemical call

- ins but I think many methods were either on characterizing the nanomaterial or part of the facility’s EHS program. Please use the links below to view the
information collect ed from these chemical call

- ins:

Carbon Nanotube Information Call

- in: http://www.dtsc.ca.gov/PollutionPrevention/Round_One.cfm

Quantum Dots and Nano Metals/Metal Oxides Information Cal l

- in: http://www.dtsc.ca.gov/PollutionPrevention/Round_Two.cfm

If I come across any additional information that may be useful for answering the questions above, I will forward
that to you.

Sincerely,

Suzanne Davis Hazardous Substances Engineer
Cal/EPA Department of Toxic Substances Control 1001 I Street, 12 th Floor Sacramento, CA 95814
Phone: 916

- 327

- 4206

FAX: 916

- 327

- 4494
email: suzanne.davis@dtsc.ca.gov

Ms. Davis attached three documents with the response:

California EPA. (2009). Bibliography for Round 1 Chemical Information Call

- In.

California EPA. (2012). Bibliography for Round 2 Chemical Information Call

- In.

U.S. EPA. (2011). Screening Methods for Metal

- Containing Nanoparticles in Water. EPA/600/R

- 11/096

. Washington, DC.