April 12, 2007 Don Clark, Clarke Basement Systems, 284 Main St. N., Markham, Ontario L3P 2Y8 Dear Don Thank you for a job well done on my crawlspace. Your crew of Rob, Graham and Aldo did a fabulous job and are a credit to Clarke Basement Systems. The CleanSpace product is not inexpensive, but I know I got what I paid for because I have already seen some results of having this product installed. There is definitely less moisture up in my living space now and I have noticed a reduction of moisture on my windows as well. I know this will also reduce my heating and air conditioning bills as well. Something that was not mentioned to me was how your product helps drastically reduce radon gas. Here in Lagoon City we live on a peat bog that causes radon gas and so this product is a great added feature worth mentioning to everyone who should have CleanSpace in their crawl space. Your CleanSpace system certainly will “pay for itself”. Thanks again for a job well done. Sincerely, Tibor Patacsi 19 Pinetree Crt. Lagoon City.