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~ .r <br />Mr. Md~tindes <br />Page Tt~ro <br />7. Annual data recovering should be an excess of 75% for a <br />valid annual geometric mean calculation. (See the Acrbient <br />Air Requirements for a metre detailed explanation.) <br />8. The monitoring plan, as explained in the Ambient Air Nbnitoring <br />requirements, can be limited to a brief description of your <br />imnitoring activities since your efforts are not a State re- <br />quirement. We would also like to see an example of your <br />calculations used in figuring the T5P concentrations precision <br />and accuracy statistics. <br />9. Division personnel are available to conduct one round of audits <br />for you per State fiscal year (July -June). A written <br />request for such an audit is required. <br />For your consideration I have enclosed a quarterly report received from <br />Pittsburgh and Midway Coal. They were conducting a monitoring program <br />similar to yours. there is further information concer-iing their project <br />available in our office, if you would find it helpful. <br />Please review the Ambient P'bnitoring Requirements and if you have any <br />question, please feel free to call. <br />Sincerely, <br />J.~'-~ k.~3~ <br />Beth K. Baird <br />Air Pollution Control <br />cc: Steve Arnold - APCD <br />Sandy Fim-ick - CMLRD ~/o ~+-+.LL-~a <br />