T/O mins are located on the back of the Jepp 10-9 plates & have nothing to do with your landing mins. CL & RCLM are required to reduce down to 6/6/6 with 3 RVR trans req, however 1 trans may be inop making the other 2 req & controlling. Some carriers have an exemption to get by w/o RCLM required. The starting point to detemine T/O mins would be the standard 2 eng (1mi or 5000 rvr) and 3/4 eng mins (1/2 mi or 2400 rvr). I have trained down to 5/5/5 although none of the 121 carriers I have worked for got approval to reduce mins that low. A T/O alt is required when the wx at your dep airport is below your landing mins and is not related to T/O mins, they are 2 seperate issues. The 717 can conduct single eng Cat III autolands.