Posted on: 10/29/2010 03:31 AM

August 30, 2010. In response to questions and concerns raised by Camillus residents, and specifically, the presentation on air monitoring presented by Dr. Tracy, DEC offers the following:

• The current air monitoring program is designed for SCA construction activities only. Additional air monitoring is planned during dredging and corresponding SCA operations. This additional air monitoring plan will be a component of the Community Health and Safety Plan (CHASP) which will be presented to the public for review and comment in advance of approval and implementation.

• Honeywell has replaced its original volatile organic compound (VOC) air monitors with a different brand of VOC air monitor. Information on this new monitor, its accuracy, and calibration protocols have been provided to Dr. Tracy and others. The VOC monitors undergo daily calibration checks with a certified gas at a concentration of 5 ppm. The monitor's response to the calibration has to be < +/- 10% of the gas (or +/- 0.5 ppm). Therefore, the monitor's accuracy will be maintained each day to be better than the manufacturer's stated accuracy of +/- 10% or 2 ppm.

In addition, the VOC monitor can read down to 0.1 ppm. Each monitor will also be subjected to a certified gas of ultra pure air (<0.01 ppm) each monitoring day. The monitor's response to this zero check has to be >0.0 and &#8804;0.2 ppm. Therefore, the monitor will be proven each day to have sufficient accuracy to meaningfully measure at the action limit of 5 ppm.

• The new VOC monitors have been in place and operating since August 13, 2010. Monitoring results will be provided to the public via Honeywell’s website at www.onondaga-lake-initiatives.com

• The air monitors are designed to monitor for dust and volatile organic compounds (VOCs). The threshold limits for monitoring have been established in consultation with the New York State Department of Health (DOH) to be protective of human health. (See the attached supplemental discussion from DOH regarding the Community Air Monitoring Plan (CAMP)).

• The monitoring system in place is one of the most extensive systems provided for remediation sites and the threshold limits are as strict, or stricter, than those at many other remediation sites.

• NYSDEC is confident that the CAMP for the SCA construction work is protective of human health for the following reasons:

o Based on existing data at Wastebed 13 and neighboring Wastebed sites, the Solvay waste material existing at these sites has limited amounts of VOCs and does not pose a significant risk to the public
(See the attached discussion regarding site conditions relative to potential volatile emissions.)

o SCA construction work involves limited excavation of the wastebed material. The estimated durations for construction activities (that will actively disturb wastebed materials) during 2010, 2011, and 2012 are 33 days, 23 days, and 10 days, respectively for a total duration of 66 days (an average of 22 days per year).

o The CAMP established by DOH is protective of the anticipated short term impacts, if any, from such construction activity.

• The DEC has withheld approval of the commencement of site work in the past 2 weeks while the agencies review the air monitoring system and concerns raised by citizens.

• No site excavation will begin on the site until the week of August 30, 2010.

• The DEC will continue to work with the Town of Camillus and its residents regarding concerns with the project.

• Specifically, when the additional air monitoring plan is drafted for SCA operation, the public will have the opportunity to review and comment on the plan prior to implementation.

• The additional air monitoring plan will be in place well before commencement of dredge operations scheduled for May 2012.

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