I first discovered the idea of lining a crawl space about a year prior, from a website operated by "Clean Space Texas" (Olympic's previous name). I contacted them via phone, and Darrin Saffell set up an appointment to come out and look at it. He arrived on time for the appointment. He spent a length of time explaining the process and the benefits, answering many of my detailed questions. Then he whipped out a Tyvek suit and actually crawled under my house with a flashlight and a camera. He spent about 20 minutes down there. A week or so later, he emailed me a detailed bid, which several options and a surprisingly detailed map of my crawlspace. He had identified the low spots and devised a drainage plan. Due to high cost, and other construction, I called Darrin to let him know I was still very interested, but needed to put off the project. He was kind and did not apply any pressure. A year later, I called him and we agreed to keep the same price and commence work. We set up a start date approximately 2 weeks later. On that day, Darrin and his crew (2 workers) showed up exactly on time. They started by removing a lot of debris left from years of neglect, repairs and construction (including abandoned cast iron and galvanized plumbing pipe, abandoned electrical wires, lumber scrap, concrete chuncks, etc.). Then they dug a trench around the perimeter of the house and buried a perforated drain pipe. Finally, they laid a liner on the floor, up the walls, and up the piers to seal off the space, and installed a sump pump (piped into a drain) and a dehumidifier. Total job took 3 days, and Darrin kept in contact via phone and email the whole time. They did not ask for payment until work began (down payment at start, full remainder upon completion). The crew worked long, hard days, and cleaned up behind themselves each day upon completion. Highly, highly recommend.