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<br />Although the purchase price of about $1000.00 seelns high when. <br />compared to conventional dehumidifiers~ the Sahara brand is so <br />much more efficient that its pennies per pil1t removal cost is so much <br />better that there is a finite pay back period for the higher cost. Ili <br />addition to nl1JJ.1.illg cheaper, the Sahara captures a good deal more <br />moisture, and hence makes the. space drier. Using a Sahara in. <br />conjunction vvith air conditionmg "vill allO\;V you to lUaintain relative <br />40% relative hUmidity in summer, wbich v\lill prevent mold <br />problems, and help to preserve stored iteIus in the property room as <br />.well. Ask the Shelter people to make recommendations as to where <br />to place the dehumidLfiers.. or. feel free to call me. <br /> <br />I measured C02 levels almost three times the outdoor level, 1200. <br />p2..rtS per million indoors (PPlvD/400 PP1:\loutdoors. This suggests <br />that there is insufficient fresh air being added to your ventilation air. <br />Reducing fresh air intake produces energy savings. because bringing <br />in fresh air requires discharging heated air in winter or cooled air in <br />summer, but there is a trade off in lessened worker comfort and <br />efficiency, as well as increased indoor air quality complaints. 1000 <br />PP}/I is the high end limit in the ASHR!\E standard for 111door air <br />quality. It should be a simple matter to i.t"'1crease the fresh air intake, <br />if Inaintenance personnel are assured that energy savings ?Te a <br />secondaI:Y priority to occupant comfort., You fnighfcbnside{' ., <br />installing heat recovery ventilation, which pennits the capture of <br />heat in diSCharged air. Again, Shelter Supply distributes the VanEE <br />Droduct vvhich has perfonned well in our cliluate. SOlne other <br />brands vvork as '.vell, but please callIne before Iuaking a final <br />decision about mOdifying rOUT ventilation systelu. <br /> <br />As a final note. take appropriate precautions in reluoving the sheet <br />rock from the back vvall. Careless h8..Lldling of moldy material can <br />generate clouds of irritating mold spores that can effect the health of <br />occupants and '.vorkers alike. Standard practice is to seal off the <br />work area, then use exhaust ventilation to the outdoors to remov~e <br />airborne contarninants generated by demolition work. All affected <br />surfaces should be damp cleaned \vith a dilute bleach solution. <br /> <br />If I can be of any further help, please call Ine. <br /> <br />Sincerely <br />~ , <br /> <br />1~~ <br />lv'Iac Pearce <br /> <br />"-'" <br />~I <br />