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of using ORC in B10PILES. Early proof-of-concept work was an in-house study oti a crude oil contaminated soil. When the contaminated soils were treated with ORC there was a 7000 ppm greater reduction in TPH after 200 days, relative to the control ORC was used in an experiment with Dow Chemical in Midland, MI The study was eventually presented in a poster session at the Third International Symposium for In Situ and On-Site Bioreclamation, April 26, 1995 (The Battelle Conference). The target problem was 20,000 to 30,000 cubic yards of soil at an oil well field service center The contamination consisted of 0.1% to 5% by weight of total petroleum hydrocarbons (TPH). A sample of the contaminated area was taken and incorporated into an experiment. The relevant elements of the presentation abstract are as follows- "Oxygen supplied to soil is often the single most important factor limiting bioremediation of petroleum containing soils One approach for increasing the rate of TPH removal (and decreasing treatment times) is through enhancing the supply of oxygen to the soil The introduction of solid oxygen releasing compounds into soil provides a viable alternative for meeting the oxygen demand of petroleum contaminated soils." ORC was demonstrated to CONTROL ODORS -- by the neutralization of reduced sulfur and nitrogen compounds and the inhibition of their microbial producers A mayor environmental firm, IT Corporation, tested ORC and compared it to nitrates for hydrogen sulfide control in an industrial effluent lagoon The results were presented at the 1993 annual meeting of the American Chemical Society in Atlanta, GA. The full details of the study are presented in Technical Bulletin V.1. IREG EN ES X S ----------------------------------------------------------------------------- *Bioremediation Producfs 27130A Paseo Espada, Ste 1407, San Juan Capistrano, CA 92675 Phone 714-443-3136 Fax 714-443-3140