The"dearER\" letter. May 3, 1974 Regional Administrator EPA Region IV 1421 Peach Tree street, N.E. Atlanta, Georgia 30309 Gentlemen: Per our telephone communication of yesterday, we hereby notify you of an incident of non-compliance with regard to our discharge permit, Application No: M M m i M H I . The specified daily average of fluoride in our discharge was exceeded because insufficient lime was added to our holding tank, due to an oversight. Upon analysis of our weekly composite sample, we discovered the problem and called your office immediately. This non-compliance lasting up to one week has been corrected by refilling the lime feeder. In order to prevent a recurrence, we aro evaluating the feasibility of including some kind of a level sensing device and alarm to our lime feeding system. This is in addition to the installation of a flow sensor as per our letter of March 12, 1974. Please rest assured we are anxious to prevent any further accidental discharges and we are attempting to cooperate with your office in every possible way. Yours sincerely,
Vice President Operations cc: State EPA : Chairman of Board : Corporate Legal Counsel
Your discharge permit calls for composite sampling, but composite sampling doesn't keep you from polluting, it only shows if you have or haven't The way to be sure you stay within permit levels is bv continuous monitoring of your discharge — so you can do something about setting things right the moment something goes wrong. If you would like to know about our continuous on-line monitors for ammonia, cadmium, chlorine, copper, cyanide, lead, nitrate, and other inorganic species — write to our Monitor Division. It beats writing the EPA!
ORION RESEARCH 380 Putnam Avenue Cambridge, MA 02139 CIRCLE 3 6 O N READER SERVICE CARD
April 22,1974 C&EN
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