Company News... NRC ENVIRONMENTAL SERVICES ANNOUNCES THE ACQUISITION OF A/C INDUSTRIAL SERVICES CORPORATION PRESS RELEASE CHICO, CALIFORNIA October 1, 2007 FOR IMMEDIATE RELEASE—NRC Environmental Services, Inc. (NRCES) announced today the acquisition of A/C Industrial Services Corporation (A/C), a privately held fully integrated environmental management and engineering firm, serving public and private organizations on the US West Coast for over 20 years. The A/C acquisition greatly complements NRCES’ existing Northern California operations. In addition to over ten new highly skilled employees, A/C also brings asbestos abatement to NRCES’ arsenal of services. Strategically located in Chico, California, A/C is well positioned to provide rapid and efficient services throughout Northern, Central, and Eastern California. By combining the existing strengths of A/C with the talent and resource depth of NRCES, the company expects rapid growth and service expansion in Northern California. “This move comes at an important time,” said Todd Roloff, NRCES Vice President. "Many NRCES customers have been requesting that we augment our presence in the geographic area currently serviced by A/C. With this acquisition, NRCES will both meet the needs of existing customers as well as provide additional services to those that need them in the northern California region. ” NRCES also looks forward to being part of the Butte County community with its operation of the Butte County household hazardous waste collection facility. NRCES will continue its commitment to responsible business practices at this facility and with its overall operations. NRCES is part of the SEACOR Environmental Services group of companies, a wholly owned subsidiary of SEACOR Holdings Inc. (NYSE: CKH). NRCES is the West Coast leader in providing land and marine emergency response as well as environmental remediation and industrial services. NRCES has numerous West Coast offices including Seattle and Spokane, WA; Portland, OR; and Chico, Eureka, Alameda, Long Beach and San Diego, CA. For more information about NRCES’ services visit www.nrces.com. A/C is a dynamic, client-oriented firm that offers environmental engineering and hazardous waste management services throughout the western United States. As a multi-disciplinary environmental company, A/C solves environmentally related problems ranging from complex sub-surface soil and groundwater contamination issues to the management and treatment of hazardous materials. For additional information, please contact: Steve Candito, President NRCES (631) 224-9141 Ext 110 or Todd Roloff, Vice President (510) 749-1390 Ext 4121. This release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements include, but are not limited to, comments about the benefits of the contemplated transaction and the parties’ plans, objectives, expectations, intentions and other statements that are not historical facts. Such statements are based on the current beliefs of the parties’ respective managements and are subject to significant risks and uncertainties. The following factors, among others, could affect the transaction and the anticipated results: the receipt of requisite documentation, consents and approvals and the parties’ ability to achieve expected synergies in the transaction.