Message Fri, Aug 12, 2011 1:04 PM
To: Jodi Ross
Subject: Perchlorate Monitoring
Attachments: Attach0.html Uploaded File 7K
CEI_Sample_Matrix_(10.23.09).pdf Uploaded File 64K
Hi Jodi:
To follow up on your questions from yesterday, we have contacted the lab for an explanation of the differences/accuracy of the two testing methods for Perchlorate that have been used for the project.
Second, with respect to 65, 91, and 110 Groton Road sampling, both 65 and 110 are scheduled to be sampled annually, which occurs during September of each year. I've attached the sampling matrix, as determined by CEI, which is the schedule we follow (under "Proposed Residential Sampling Program"). As for 91 Groton Road, they are scheduled to sampled on a quarterly basis. After reviewing our scheduling letters, this residence was included in the mailing for June.
Thank you for your attention to this matter. Let us know if you have any questions or require any additional information.
Thanks,
Ray
Raymond L. Willis, III, P.E.
Vice President
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