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COVENANT ENVIRONMENTAL SUCCESSFULLY COMPLETES FIRST-STAGE SUSTAINED PRODUCTION TESTING OF MOBILE RETORT UNIT

 COVENANT ENVIRONMENTAL SUCCESSFULLY COMPLETES FIRST-STAGE
 SUSTAINED PRODUCTION TESTING OF MOBILE RETORT UNIT
 MEMPHIS, Tenn., Sept. 25 /PRNewswire/ -- Covenant Environmental Technologies, Inc. (OTC: CVEM) has successfully completed the first stage of sustained production testing of its proprietary Bold-Ark Mobile Retort (MRU) in the reclamation of hydrocarbons from non-hazardous oil field waste, Hal. A. Millsap, president and chief executive officer, announced today.
 In the first-stage testing, the MRU operated continuously for eight to 10 hours a day five days a week, with sustained throughput of approximately four tons per hour. Second-stage tests, to begin in the next few weeks, are targeted to achieve throughput of 5 to 10 tons per hour with no significant decline in performance, Mr. Millsap said.
 "The emissions and residual hydrocarbon tests demonstrate that the MRU can remove 98 percent of the total hydrocarbons from typical non- hazardous oil field waste, and do so in an environmentally acceptable manner," Mr. Millsap said. "Analytical reports show that toxicity characteristic leachate procedure (TCLP) values of processed materials were well within the standards established by the Tennessee Department of Environment and Conservation. Meanwhile, produced hydrocarbons had a heating value roughly equal to number 4 grade fuel oil."
 Statistical findings on the tests, conducted by Environmental Services company, of Little Rock, Ark., were as follows:
 -- Feedstock: Total petroleum hydrocarbons: 7564 mg/kg. Volatile hydrocarbons: benzene, 0.127 mg/kg; toluene, 0.211 mg/kg; trichloroethene, 0.280 mg/kg, and zylene, 1.280 mg/kg.
 -- Stack Emissions: Particulate concentration 0.0324 grains per cubic foot; particulate emission rate, 0.2110 pounds per hour; sulfur dioxide concentration 1.143(5) pounds per cubic foot, and sulfur dioxide emission rate, 5.228(2) pounds per hour.
 -- Produced Hydrocarbons: Heating value, 12,516 BTU per pound. Sulfur content 1.58 percent.
 -- Residual Hydrocarbons in Processed Waste. Total petroleum hydrocarbons, 172 mg/kg. All volatile hydrocarbons, below detection limits.
 The principal goals of the sustained production tests were to (1) demonstrate operational reliability, (2) demonstrate reclamation efficiency, (3) provide for third party testing of stack emissions, and (4) provide for third party testing of processed oil field waste.
 Testing of the MRU for recycling of used auto and truck tires is continuing Mr. Millsap said, and will be carried into the sustained production phase when second-stage oil field waste testing is completed. The MRU is expected to extract 100 percent of commercially valuable hydrocarbons, carbon black and steel from used tires, also in an environmentally acceptable manner, he added.
 The first two commercial mobile retort systems are in the latter stages of production and are scheduled to be delivered to customers this fall, Mr. Millsap said.
 Covenant Environmental Technologies' Bold-Ark mobile retort unit, 10 years in development, reclaims and recycles non-hazardous oil field waste, used rubber tires, and plastic materials, reducing them to commercially valuable carbonaceous products. It is designed to be transported to and operated at the clean-up site.
 -0- 9/25/92
 /CONTACT: Linda Moore, vice president-administration, or Carolyn Hagood, vice president-operations, 901-794-1392, of Covenant/
 (CVEM) CO: Covenant Environmental Technologies, Inc. ST: Tennessee IN: SU:


PS-LR -- NY042 -- 3560 09/25/92 14:21 EDT
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Date:Sep 25, 1992
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