INTEGRATED ENVIRONMENTAL TECHNOLOGIES ENTERS INTO INVESTMENT AGREEMENT WITH BENCHMARK PERFORMANCE GROUP, INC.

LITTLE RIVER, SC, May 23, 2007 - Integrated Environmental Technologies, Ltd. (OTCBB: ?IEVM?) announced today that it has inked a Term Sheet with Benchmark Performance Group, Inc. for Benchmark to invest in excess of $3 million dollars in the Company. Under the terms of the agreement, Benchmark Energy Products, LP, a subsidiary of the Houston-based Benchmark Performance Group, will also become the exclusive worldwide distributor of EcaFlo? equipment and EcaFlo? fluids - anolyte and catholyte - to the oil and gas industry. The two companies had previously finalized an agreement whereby IET would supply additional EcaFlo? equipment to meet Benchmark?s expected demand for EcaFlo? solutions. The mutually beneficial investment agreement between IET and Benchmark comes as a result of a developing business relationship with Benchmark and its President and CEO, Wayne Kinsey. Benchmark has carefully developed its reputation as an innovator in the development, manufacture, and supply of specialty chemicals, compounds, and additives for industrial and oilfield applications. Benchmark Energy Products will use and sell EcaFlo? fluids for the effective management of bacteria, viruses, fungi, and other microorganisms in both fracturing fluids and in the waters produced in conjunction with the production of oil and gas. William Prince, President and CEO of Integrated Environmental Technologies said, ?We welcome the significant investment and confidence that Benchmark is placing with us and we are already involved in furthering our very good relationship with Benchmark. This partnering agreement allows us to pick up of the pace of building EcaFlo? equipment, which will generate environmentally-responsible solutions for Benchmark?s oil and gas industry customers. We look forward to working together to grow the demand for these ?green solutions.? IET places its trust in Benchmark as the exclusive licensee and distributor to this industry because of their proven ability to sell product, their integrity within their market and because of their genuine desire to take a leadership role in promoting oilfield environmental stewardship in an economically-viable manner.? Prince further stated, ?The $3+ million equity investment that Benchmark is making into IET, coupled with the upcoming EcaFlo? equipment sales and sustaining technology fees IET will glean from Benchmark?s future sales of anolyte, makes this investment agreement an exceptional jump-start to IET?s growth plans.? Wayne Kinsey, President and CEO of Benchmark and its various affiliates, including Benchmark Energy Products, stated: ?We?re very excited about these next steps we?re taking with IET. We expect our equity investment to help IET grow the market for its EcaFlo? equipment not only into our industry, but also into many others. We see this as a limitless opportunity for both Benchmark and IET, with tremendous up-side potential for both companies. The timing of our agreement to invest in IET could not be any better. We are presently moving this product into the marketplace. All of our feedback from the industry has been extremely positive, so we continue moving ahead with great anticipation and excitement.? About Benchmark Performance Group: Benchmark is a manufacturer and supplier of, among other things, specialty chemicals, compounds and additives developed for industrial and oilfield applications, including, but not limited to, proprietary cross-linkers, polymers, polymer slurries and other fluid additives used in oil and gas well cementing, stimulation and production fluids. www.benchmark-research.com Forward-Looking Statements: The statements in this press release regarding the investment agreement, future sales of EcaFlo? equipment and/or any further results of agreements with Benchmark Performance Group, future opportunities and any other effect, result or aspect of the agreement and any other statements, which are not historical facts, are forward-looking statements. Such statements involve risks and uncertainties, including, but not limited to, costs and difficulties related to the integration of EcaFlo? equipment and fluids into Benchmark Performance Group?s sales and services, actual revenues to be derived as a result of any current or pending agreement, applicability of IEVM?s technology, costs, delays, and any other difficulties related to IEVM?s business plan, risks and effects of legal and administrative proceedings and governmental regulation, future financial and operational results, general economic conditions, and the ability to manage and continue growth. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual outcomes may vary materially from those indicated. IEVM undertakes no obligation to revise or update such statements to reflect current events or circumstances after the date hereof or to reflect the occurrence of unanticipated events. Contact: William E. Prince, President and CEO Integrated Environmental Technologies, Ltd. 4235 Commerce Street Little River, South Carolina 29566 (843) 390-2500 Office (843) 390-3900 Fax president@ietltd.net For more information on the IET?s products, please visit: www.ietusa.net For more information on IEVM?s Investor Relations, please visit: www.ietltd.net