Tucson Weekly: Listings: Environment (October 15

ENVIRONMENT
GRAY WATER. Women Build Houses, a network dedicated to increasing women's access to building skills and knowledge, and to promoting environmentally-safe building, presents a workshop on the use of gray water. Learn the characteristics of a safe system while building a simple gray water tank for a washing machine. Class runs from 1 to 4 p.m. on Saturday, October 17. Advanced registration is required, and childcare is available. Class fees are based on a sliding scale, with a discount for registering for five classes. Call 206-8000 to register. (Se habla español.)
Listings STRAW BALE HOGAN WORKSHOP. Women Build Houses (Navajo Chapter) and the Black Mesa Permaculture Project raise the walls of an octagonal hogan, from October 22 through 25. Topics covered in the workshop include: the pros and cons of straw bale construction, solar design considerations, money-saving tactics, how to choose good bales and raise straight walls, and finishing options for straw bale walls. The cost is based on a sliding scale from $150 to $375, including meals. Workshop is free for Native American women. Call Susan at 326-5844 for registration information. Volunteers are needed in October and November to help haul and peel logs, move stone, mix mortar, haul materials, and help with the timber framing. Call Andy at 774-6686 for information.