June 2008-November 2010 Phone Log for Atrazine Spec ial Review Docket Page 1 of 8

December 5, 2008

Melanie Biscoe of EPA/OPP talked with Dan Campbell of Syngenta regarding various atrazine follow-up actions which included some disc ussion on the Atrazine Monitoring Program. Specifically, Dan Campbell indicated that only two more samples from Community Water Systems in the Atrazine Monitoring Program would need to be taken

in 2008.

Phone Log prepared by – Melanie Biscoe

January 15, 2009

Suzanne Lazorko left a voice message for Kevin Cost ello of EPA/OPP requesting additional information regarding Community Water Sy stem data on EPA’s Atrazine Updates website.

Phone Log prepared by – Melanie Biscoe

January 21, 2009

Melanie Biscoe of EPA/OPP spoke with Suzanne Lazork o on the phone regarding the Community Water System data on EPA’s Atrazine Updat es website. Suzanne Lazorko

was interested in finished water concentrations of atrazine, particularly concentrations that were found in water systems identified in the January 2003 Atrazine IRED.

Phone Log prepared by – Melanie Biscoe

January 23, 2009

Melanie Biscoe of EPA/OPP spoke with Dan Campbell o f Syngenta on the phone. During this conversation, Dan Campbell asked about the status of a waiver request they had submitted requesting decommissioning of some Co mmunity Water Systems from the Atrazine Monitoring Program. Melanie Biscoe indica ted that she would need to discuss the request with EPA colleagues before knowing if o r when any decommissioning could

occur.

Phone Log prepared by – Melanie BiscoeJune 2008-November 2010 Phone Log for Atrazine Spec ial Review Docket Page 2 of 8

February 3, 2009

Melanie Biscoe of EPA/OPP spoke with Dan Campbell o f Syngenta on the phone. During this conversation, Dan Campbell indicated he would check on Atrazine Monitoring Program spreadsheets with 90-day rolling averages and annual averages, and

indicated that the data seemed to be in a database program rather than a spreadsheet.

Phone Log prepared by – Melanie Biscoe

February 27, 2009

Melanie Biscoe of EPA/OPP talked with Dan Campbell of Syngenta on the phone about OPP science division questions regarding Community Water System data. Dan Campbell indicated that they weren’t seeing atrazine levels changing in the way that OPP had described in questions OPP provided to Syngenta on February 27, 2009 (answered by Syngenta in writing on 4/17/09). Dan Campbell indi cated that Syngenta had submitted data from Vermont, IL Community Water System, and M elanie Biscoe indicated she would check with Mary Frankenberry in the Environme ntal Fate and Effects Division to make sure they had all of it. Dan Campbell and Mel anie Biscoe also discussed having a

brief call with the Environmental Fate and Effects Division and the Human Health Division on about the questions OPP provided to Syn genta on February 27, 2009 (answered by Syngenta in writing on 4/17/09).

Phone Log prepared by – Melanie Biscoe

April 14, 2009

Jennifer Sass and Mae Wu of Natural Resources Defen se Council (NRDC) called Melanie Biscoe of EPA/OPP and asked questions regar ding how Atrazine Monitoring Program data might be used to calculate annual aver ages under the Safe Drinking Water Act. NRDC had heard that Evansville, IL might be u sing the Atrazine Monitoring Program data to avoid an MCL violation. Melanie Bi scoe indicated that, in general, one would not select four random samples from each quar ter, but would use the entire set of data in calculating an annual average if one were t o use the Atrazine Monitoring Program data for that purpose. Melanie Biscoe also indicat ed that because Community Water Systems in the Atrazine Monitoring Program are samp led weekly/biweekly as opposed to quarterly, any given Community Water System is less likely to exceed the MCL when using Atrazine Monitoring Program data to calculate an annual average concentration of atrazine. NRDC was also interested in knowing whet her the sample sites for the Atrazine Monitoring Program were in the same locations as th e Safe Drinking Water Act (quarterly) sample sites.

Phone Log prepared by – Melanie BiscoeJune 2008-November 2010 Phone Log for Atrazine Spec ial Review Docket Page 3 of 8

June 10, 2009

Helen Sok of SWAPE called twice leaving a voicemail concerning Atrazine Monitoring Program data.

Phone Log prepared by – Melanie Biscoe

June 12, 2009

Melanie Biscoe of EPA/OPP and Dan Campbell of Synge nta talked on the phone about the recent posting of Atrazine Monitoring Program a nd Simazine Monitoring Program data on OPP’s Atrazine Updates website. Dan Campbe ll asked why total chlorotriazine and simazine data were posted in addition to atrazi ne data. Melanie Biscoe explained

that because the mode of action is the same for the triazines and their common degradates and OPP looks at triazines and their common degrada tes in total to assess any possible risks, it made sense for OPP to post all the data t ogether. Additionally, the atrazine parent compound is analyzed as part of the Simazine Monitoring Program so it would not

make sense for OPP to leave those data off the Atra zine Updates website. Dan Campbell also requested information on entities that had req uested the Atrazine Monitoring Program data, which Melanie Biscoe did not provide at that time. Dan Campbell indicated that Syngenta was concerned that individu al Community Water Systems would be contacted as a result of the data posting.

Phone Log prepared by – Melanie Biscoe

September 8, 2009

Melanie Biscoe of EPA/OPP and Dan Campbell of Synge nta talked on the phone regarding various atrazine follow-up actions which included some discussion on the Atrazine Monitoring Program. Dan Campbell indicate d that many Community Water Systems are/would be glad to stop monitoring becaus e they see it as an extra program. Dan Campbell also indicated that the Kickapoo, KS a nd Linn Valley, KS Community Water Systems were difficult to get samples from be cause they were private communities. Dan Campbell also indicated that Syng enta would be doing a statistical analysis to re-look at the frequency of monitoring scheme for Community Water Systems in the Atrazine Monitoring Program.

Phone Log prepared by – Melanie Biscoe

September 9, 2009

Melanie Biscoe of EPA/OPP and Dan Campbell of Synge nta talked on the phone regarding various atrazine follow-up actions which included some discussion on the Atrazine Monitoring Program. Specifically, Dan Cam pbell of Syngenta indicated that reentering the 31 Community Water Systems that had be en decommissioned earlier in 2009 would be very difficult to do because the Community Water Systems do not want to beJune 2008-November 2010 Phone Log for Atrazine Spec ial Review Docket Page 4 of 8

part of the Atrazine Monitoring Program anymore. A t that time EPA had not proposed re-entering those systems into the Atrazine Monitor ing Program.

Phone Log prepared by – Melanie Biscoe

September 10, 2009

Melanie Biscoe of EPA/OPP and Alan Robeson of the A merican Water Works Association (AWWA) talked on the phone. Alan Rober son indicated that he had talked with the Office of Water regarding atrazine and tha t he wanted to meet with OPP regarding atrazine and source water protection and the state of the science. Melanie

Biscoe asked about back-and-forth direct communicat ions with Community Water Systems.

Phone Log prepared by – Melanie Biscoe

September 30, 2009

Melanie Biscoe of EPA/OPP talked with Dan Campbell of Syngenta regarding various atrazine follow-up actions which included some disc ussion on the Atrazine Monitoring Program. Dan Campbell indicated that Syngenta was contacting Community Water Systems in the Atrazine Monitoring Program as a fol low-up to the media reports on atrazine and drinking water. With regard to the ac tual drinking water monitoring, Dan Campbell indicated that they had resolved a previou s issue they had had with Kickapoo, KS Community Water System; Linn Valley, KS CWS indi cated that it was not interested in participating in the Atrazine Monitoring Program , however.

Phone Log prepared by – Melanie Biscoe

October 26, 2009 , 4:30 PM

Bob McNally of EPA/OPP returned a phone call to Jan is McFarland of Syngenta.

Bob and Janis discussed follow-up steps from the co nference call completed an hour or so earlier with atrazine registrants. This was to plan the agenda for the Nov. 3 meeting with registrants.

In particular, Bob and Janis discussed when Syngent a might have pre-existing data analyzed that could address the issue of daily spik es, that may or may not be captured in the current monitoring program. It appears unlike ly Syngenta will have that data fully analyzed by EPA’s Nov. 3 follow-up meeting with reg istrants, since they are also preparing their presentations for the SAP that same day; but Bob and Janis did agree to have at least a conceptual discussion with OPP’s st atisticians on the type of data Syngenta has – thousands of data points – and wheth er these data are sufficient or whether additional monitoring might be helpful. The se data have been gathered in a variety of locales, from reservoirs, to creeks adja cent to fields, etc, over a decade or more.June 2008-November 2010 Phone Log for Atrazine Spec ial Review Docket Page 5 of 8

Phone Log prepared by – Bob McNally & Melanie Bisco e

January 11, 2010

Melanie Biscoe of EPA/OPP and Dan Campbell of Synge nta talked on the phone regarding various atrazine follow-up actions which included some discussion on the Atrazine Monitoring Program. Specifically, Dan Cam pbell of Syngenta indicated that providing the Atrazine Monitoring Program data in a spreadsheet would take some time because it needs to be manually exported to Microso ft Excel.

Phone Log prepared by – Melanie Biscoe

February 22, 2010

Melanie Biscoe of EPA/OPP and Dan Campbell of Synge nta talked about Atrazine Monitoring Program (AMP) data on the phone. Syngen ta indicated that it had added a confidentiality claim to the AMP spreadsheets it pr ovides to OPP, and asked why OPP needed the 2009 drinking water data spreadsheets at that time. Melanie Biscoe of EPA/OPP indicated that OPP needed the spreadsheets primarily to be able to work with the data, but also expects that the spreadsheets wo uld be posted to the Atrazine Updates website for transparency. Dan Campbell indicated t hat Syngenta would prefer that data be posted according to the county the Community Wat er System (CWS) serves rather

than the name of the CWS itself. Melanie Biscoe in dicated that she would check on the appropriateness of that with OPP management, but al so said that all the data are available by FOIA regardless. Dan Campbell also said that Sy ngenta would prefer that the data be posted only as maximum 90-day rolling averages, as it has been posted in the past, noting that Syngenta was not opposed to transparency but o pposed to the way various organizations (mis)used the data. Melanie Biscoe i ndicated that any organization’s use of

the data could be taken into account and evaluated through the atrazine re-evaluation process, if necessary.

Phone Log prepared by – Melanie Biscoe

March 22, 2010

Dr. Paul Rosenfeld of Soil Water Air Protection Ent erprise (SWAPE) called and left a voicemail for Melanie Biscoe of EPA/OPP regarding A trazine Monitoring Program data.

Phone Log prepared by – Melanie BiscoeJune 2008-November 2010 Phone Log for Atrazine Spec ial Review Docket Page 6 of 8

April 19, 2010

Dr. Paul Rosenfeld of Soil Water Air Protection Ent erprise (SWAPE) called Melanie Biscoe of EPA/OPP regarding the availability of Atr azine Monitoring Program data.

Phone Log prepared by – Melanie Biscoe

May 28, 2010

Ellis Jacobs of Able Law called Melanie Biscoe of E PA/OPP regarding the availability of Atrazine Monitoring Program data for Ohio.

Phone Log prepared by – Melanie Biscoe

June 21, 2010

Ralph Grossen left a voicemail for Robert McNally o f EPA/OPP regarding a study being conducted by the University of Minnesota on cancer and atrazine and the study’s use of the TRECI model, that Ralph Grossen believed was im plemented by EPA in the early 1990s. Ralph Grossen was interested in learning th e status of the TRECI model at EPA.

Phone Log prepared by – Melanie Biscoe

June 21, 2010

Ellis Jacobs of Able Law called Melanie Biscoe of E PA/OPP regarding Atrazine Monitoring Program data for Ohio.

Ellis Jacobs asked what the difference was between the Atrazine Monitoring Program (AMP) data and the Simazine Monitoring Program (SMP ) data. Melanie Biscoe explained why atrazine data were included in SMP sp readsheets, and say that Hillsboro, IL and Farina IL Community Water Systems (CWSs) are in both the AMP and the SMP. Melanie Biscoe explains that EPA looks at the total chlorotriazine levels in the AMP and SMP water monitoring because atrazine, simazine, an d their common degradates have similar modes of action. Melanie Biscoe also expla ins that atrazine is the more predominant contaminant in CWSs in the AMP, even th ough simazine is monitored in AMP systems as well. Melanie Biscoe says there are many more CWSs in the AMP than

the SMP.

Ellis Jacobs requests that EPA provide him with the following:

• AMP data with Ohio CWS data broken out, then aggreg ated over time (years lined up next to each other), and to also separate raw and finished water data.

o Melanie Biscoe indicated she would have to get back to him on this

request.

• The list of systems added to the AMP since 2003

o Melanie Biscoe indicated that OPP could provide tha t.June 2008-November 2010 Phone Log for Atrazine Spec ial Review Docket Page 7 of 8

• The data upon which the initial set of AMP CWSs wer e selected (the SDWA data)

o Melanie Biscoe indicated that if Ellis Jacobs wante d SDWA quarterly sample data used to determine initial AMP selection , he would have to ask the state for those data. Alternatively if he want ed to compare atrazine annual average atrazine concentrations under the Sa fe Drinking Water Act, he could also get that from the state, or from the CWS itself through links on the OW website, or if the CWS did not have a website the

information on violations could be obtained from th e EPA Office of Water via a FOIA request. Melanie Biscoe also indicated that she would check within OPP to see if OPP had any additional relevan t data that could be

made available.

Melanie Biscoe indicated that there were approximat ely 10 CWS MCL violations for atrazine in the last decade, and that the AMP in co ntrast found that several of those

violations would not have occurred if the annual av erage had been calculated using data from more frequent sampling.

Ellis Jacobs indicated that he is doing follow-up w ork to NRDC’s “Poisoning the Well” report, but for Ohio specifically.

Phone Log prepared by – Melanie Biscoe

June 24, 2010 , 4:00 PM

Melanie Biscoe of EPA/OPP contacted Dan Campbell of Syngenta and requested

information on atrazine levels detected in Drexel C WS for 2010, as EPA had gotten reports that an MCL violation has occurred in that CWS.

Phone Log prepared by – Melanie Biscoe

August 20, 2010

Brian Davis left a voicemail for Melanie Biscoe of EPA/OPP saying that he volunteered for a start-up at the University of Minnesota that has a technology to treat atrazine in drinking water; he wanted to know if the EPA or oth ers would be interested in that technology.

Phone Log prepared by – Melanie Biscoe

August 24, 2010

Bob McNally of EPA/OPP called NRDC’s Jennifer Sass at the request of EPA’s front office. Dr. Sass had heard rumors that the Agency was planning to reach decisions on

atrazine this fall. Dr. Sass also indicated that s he felt the Agency should reach decisions before the end of the year. Bob informed Dr. Sass that the Agency had another SAPJune 2008-November 2010 Phone Log for Atrazine Spec ial Review Docket Page 8 of 8

scheduled on atrazine’s cancer issues for 2011; sin ce EPA had committed to include the Agricultural Health Study (AHS) cancer epidemiology data in its atrazine re-evaluation, EPA would wait until it received those data, which are behind schedule, and received the report from the SAP before considering what the nex t steps, if any, might be on atrazine. Bob directed her to the Atrazine Updates webpage fo r more information on the AHS and

the 2011 SAP.

Phone Log prepared by – Bob McNally & Melanie Bisco e

September 2, 2010

Melanie Biscoe of EPA/OPP left an email for Brian D avis following up on his August 20, 2010 voicemail indicating that while the atrazine c ontamination technology he works on may not be germane to OPP’s regulatory decision-mak ing per se, EPA would be interested in any papers he has published regarding this technology or any additional information he would like to provide.

Phone Log prepared by – Melanie Biscoe

September 21, 2010

Helen Sok of Soil Water Air Protection Enterprise ( SWAPE) called Melanie Biscoe of EPA/OPP regarding an email she had sent the week be fore regarding Atrazine Monitoring Program data.

Phone Log prepared by – Melanie Biscoe

October 12, 2010

Melanie Biscoe of EPA/OPP talked with Dan Campbell of Syngenta on the phone regarding the availability of the well vulnerabilit y study EPA understood Syngenta to have completed four years prior. Dan Campbell indi cated that he was not sure if a well vulnerability study had actually been completed, bu t would ask his colleagues at Syngenta about the status.

Phone Log prepared by – Melanie Biscoe

October 18, 2010

Melanie Biscoe of EPA/OPP talked with Dan Campbell of Syngenta on the phone regarding the anticipated completion date for well vulnerability study, which Syngenta

estimated to be at the end of December 2010.

Phone Log prepared by – Melanie Biscoe