Wearing rubber gloves and working in a well-ventilated room, sponge a small amount on, then off, to test the reaction. If the logs respond well, continue cleaning. Other cleansers, such as Simple Green or citrus cleaners, may pack enough power for your needs.
1 The cost of hydroseeding at Always Green Hydroseeding depends on the seed choice. 2  Quick Lawn, which uses Perennial Ryegrass, costs $0.10 per square foot. 3  Athletic and Park, suitable for home lawns, parks and athletic fields, costs $0.12 per square foot.
This figure may be appropriate for small-scale hydropower, but large hydropower plants will have values significantly lower than this. An average value for O&M costs of 2â% to 2.5â% is considered the norm for large-scale projects (IPCC, 2011 and Branche, 2012).