LAWRENCEVILLE, N.J., Jan. 14 /PRNewswire/ -- Envirogen, Inc. (Nasdaq: ENVG) (ENVIROGEN) announces that in connection with its previously disclosed letter of intent to acquire Fluid Management, Inc. (FMI) of Pewaukee, Wisconsin, ENVIROGEN and FMI have executed an Agreement and Plan of Merger providing for the merger of FMI into ENVIROGEN.  Financial terms of the acquisition, also previously disclosed, include the payment by ENVIROGEN of approximately $11 million in cash and the issuance of approximately 4.2 million shares of ENVIROGEN common stock, in each case subject to adjustment as provided in the Merger Agreement.           In a related transaction, ENVIROGEN announces that it has entered into a Securities Purchase Agreement with Warburg, Pincus Ventures, L.P. to finance the cash portion of the acquisition and supplement the working capital of the combined enterprise.  Under the terms of the Securities Purchase Agreement, ENVIROGEN will issue approximately 6.1 million shares of ENVIROGEN common stock to Warburg, Pincus Ventures at an aggregate purchase price of $16 million.           The shares issuable to the FMI stockholders and Warburg, Pincus Ventures will have the benefit of certain registration rights, but will be restricted from public resale for a period of one year from the date of closing.  The closings of both transactions are scheduled to occur concurrently and are subject to customary conditions, including the satisfactory operating results of FMI and ENVIROGEN prior to closing and the receipt of necessary stockholder and regulatory approvals.  ENVIROGEN intends to mail to stockholders its definitive proxy statement following SEC review.           Dr. Harch Gill, President and CEO of ENVIROGEN, commented, "FMI's strength in project management and on-site engineering along with its strong cash flow fit exceptionally well with ENVIROGEN's technology-based environmental system and service capabilities.  I look forward to the final completion of this transaction and joining the strengths of the two organizations into an extremely well-positioned environmental services firm."           FMI is a full-service environmental consulting and engineering firm with offices in Pewaukee, La Crosse, Ashwaubenon and Mosinee, Wisconsin and Geneva, Illinois.  In 1995, FMI reported gross sales of $21.4 million and pre-tax income of $4.6 million.           ENVIROGEN (Nasdaq: ENVG) is a leading technology-based environmental systems and services company that provides solutions to industrial effluent and hazardous waste remediation problems.  The Company also designs and implements vapor extraction and other integrated systems for the on-site treatment of organic contaminants in soils and groundwater.       SOURCE  Envirogen, Inc.       CO:  Envirogen, Inc.; Fluid Management, Inc.       ST:  New Jersey       IN:  ENV       SU:  TNM |