COMPLIANCE INFO_2019 - Laserfiche WebLink

Home Browse Search

THE CHLORINE INSTITUTE 1300 Wilson Boulevard, Suite 525,Arlington,VA 22209 Phone: 703-894-4140 Fax: 703-894-4130 www.chlorineinstitute.org Jim Palmer, Chair Tom Tirabassi, Vice-Chair Frank Reiner,President DATE: September 12, 2017 MEMO TO: Cl Official Correspondents FROM: Frank Reiner SUBJECT: Suspension of Pamphlet 74, Guidance On Estimating the Area Affected By A Chlorine Release As you are aware, Cl had contracted with the DHS CSAC to model the results of Jack Rabbit I, conducted in 2010, and utilize those results to revise Pamphlet 74, Area Affected by a Chlorine Release. The intent of this analysis was to provide a model which more closely matches real life experience and allow for better planning in the event of an emergency. Recently, as the Jack Rabbit II data has become available, it has become apparent that the new data and some refinements that DHS is making in the model will result in a wider affected area. As a result of this new information we have had discussions with DHS and EPA. We are in agreement that the current version of Pamphlet 74 must be used with caution. We do not recommend that current version of Pamphlet 74 be used for RMP purposes. In cooperation with EPA, we are suspending the publication of Pamphlet 74 while the Jack Rabbit II work is being completed and we fully understand the impact. In the mean time we recommend that alternate modeling approaches be used such as EPA's RMP*COMP. This action is taken to assure that there is confidence in Cl recommendations and to follow through on our commitment to use the best available science. The current Pamphlet 74 version was based on models developed by DHS and was in our view the best science available at the time. We look forward to the updated analysis and will keep members informed when the updated version is available. Dr. Shannon Fox will provide a more detailed dive into this matter at the Fall Cl meeting.