Hi Tom Battagliese,
For solvent conversion to aqueous parts washers, check in with the IRTA in California. Here's a web site with their newsletters.
You could also have a librarian do a literature search on Dr. Katy Wolf who has published articles about work IRTA has done on solvenr alternatives, which usually includes cost-benefit data.
Here's an article about IPM integration ... sorry I don't have the original source, someone forwarded this article to me.
Pesticides, Pests Cut Back in Tempe School System
TEMPE, Arizona, May 30, 2001 - Integrated pest management has helped an Arizona school district keep unwanted pests at bay with only a fraction of the pesticides they once used. Like lots of other schools, the Tempe based Kyrene School District sprayed its facilities to control an assortment of pesky creatures: fire ants, cockroaches, mosquitoes and bark scorpions. Each month the pesticide treatments were repeated, but pest populations remained at what district officials considered to e unacceptable levels.
While the poisons were being applied and reapplied, children were being pulled out of school for a day or two each month by their parents to avoid pesticide exposure. In addition, Kyrene's pest control costs were mounting: repeated pesticide applications and administrative hours boosted the price three times over.
In April 2000, Kyrene brought in a team of specialists that included entomologists from the University of Arizona (UA) led by Dawn Gouge, an expert in urban entomology. Three Kyrene schools (Cielo, Paloma and Pueblo) were chosen for the pilot project, called Integrated Pest Management, or IPM. The operative theory behind IPM, says Gouge, is that most pests can be controlled "by combining all of our pest management tools and avoiding reliance on chemical pesticides."
"We focus on improving hygiene standards, the use of pest exclusion methods, habitat manipulation, encouraging naturally occurring biological controls and the selection of target specific pesticides that have low mammalian toxicity and low environmental impact," Gouge added.
The three pilot schools concentrated on identifying what the pests were, finding where they came from and denying them entry into buildings. All of the openings around pipes and conduits were sealed, and crawl spaces beneath portable classrooms were closed off. Drains and building slabs were repaired to inhibit cockroaches. Trees were trimmed back and birds were encouraged to roost where their droppings would not contaminate walkways and other high traffic areas.
Gouge and her colleagues monitored the project using traps in various parts of the schools. She also started a "Critter Corner" report to be included in school newsletters to provide information on bug outbreaks. "In this way we establish a pest management strategy that provides long term management of pest problems with a minimum impact on human health, the environment and non-target organisms," said Gouge.
A midterm evaluation showed that the schools reduced their pesticide applications by 90 percent and kept pest populations below 85 percent of their original levels.
Alice I. Chapman, PE
King County Hazardous Waste
130 Nickerson St, Suite 100
Seattle, WA 98109-1658