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TO: H.T. "Sonny" Dean, Director of General Services <br />FROM: Lynn Williams, Supt. of Buildings &Grounds <br />DATE: July 23, 1993 <br />SUBJECT: Utilities - Air Quality <br />Per you request, I have provided an outline of the activities <br />Buildings and Grounds has undertaken concerning this matter over <br />the last five (5) years. Every attempt has been made to provide <br />chronological order. <br />July 1988 - Renovation of present Utilities Office complete. <br />November 1988 - First testing by Indian River County Public Health <br />Unit. <br />January 1989 - Fan coil unit and duct work unit serving Pinto's <br />office area replaced in response to odor complaint. <br />October 1989 - Enviropact, Inc. - Indoor Air Assessment <br />October 1989 - Clean A/C system, area walls and ceiling. Increase <br />outdoor air intake. <br />January 1990 - Strip heaters and humidistat's installed as a <br />"reheat" system to improve humidity control. <br />December 1990- - Environmental System Services contracted for air <br />balance and system evaluation. <br />February 1991 - Modifications made to chilled water circulating <br />pump to increase water flow through units. <br />February 1992 - ECT Testing of air quality. <br />March 1992 - Remove carpet in Pinto's office and conference room, <br />replaced with vinyl tile. Disinfected ceiling space <br />above entire Utilities Office. Wipe down all walls <br />and doors. <br />September 1992 - Abandoned exhaust fan removed. Opening closed. <br />March 1993 - Rerouted and insulated condensate line in Utilities. <br />April 1993 - Applied duct sanitization to duct work and ceiling <br />space of area. <br />Throughout this time frame, our Preventative Maintenance <br />Program has been on-going. A typical visit consists of: <br />Every 13 weeks - Change filters, add algicide <br />tablets and inspect unit. <br />Alternate 13 weeks - Change filters, add algicide <br />tablets and inspect unit. <br />Clean coil, lube motor, tighten <br />electrical connections and check <br />operation. <br />The outline above in no way represents our entire effort on <br />this problem. <br />25 <br />AUG - 31993 <br />BOOK 90 ;t{U� X411 <br />I <br />