Rule 13d-1 (f) AGREEMENT

                                                                   EXHIBIT B

                            Rule 13d-1 (f) AGREEMENT

                  The undersigned persons (together, the "Reporting Persons"),
on this 27th day of October, 1997, do hereby agree and consent to the joint
filing on their behalf of this Schedule 13D in connection with their beneficial
ownership of Common Stock of ATC Group Services Inc. This Agreement may be
executed in counterparts.



                                   WPG Corporate Development Associates V, L.P.

                                   By:  WPG Private Equity Partners II, L.L.C.,
                                        its general partner

                                   By:  /s/ Xxxxxx X. Xxxxxxxxxx
                                      ------------------------------
                                            Xxxxxx X. Xxxxxxxxxx
                                            Managing Member


                                   WPG Private Equity Partners II, L.L.C.

                                   By:  /s/ Xxxxxx X. Xxxxxxxxxx
                                      ------------------------------
                                            Xxxxxx X. Xxxxxxxxxx
                                            Managing Member


                                   WPG Corporate Development Associates V
                                   (Overseas), L.P.

                                   By:  WPG Private Equity Partners II
                                        (Overseas), L.L.C, its general partner

                                   By:  /s/ Xxxxxx X. Xxxxxxxxxx
                                      ------------------------------
                                            Xxxxxx X. Xxxxxxxxxx
                                            Managing Member


                                   WPG Private Equity Partners II (Overseas),
                                   L.L.C.

                                   By:  /s/ Xxxxxx X. Xxxxxxxxxx
                                      ------------------------------
                                            Xxxxxx X. Xxxxxxxxxx
                                            Managing Member



                                   WPG CDA V (Overseas), Ltd.

                                   By:  /s/ Xxxxxx X. Xxxxxxxxxx
                                      ------------------------------
                                            Xxxxxx X. Xxxxxxxxxx
                                            Secretary


                                   Acquisition Holdings, Inc.

                                   By:  /s/ Xxxxxx X. Xxxxxxxxxx
                                      ------------------------------
                                            Xxxxxx X. Xxxxxxxxxx
                                            President


                                   Acquisition Corp.

                                   By:  /s/ Xxxxxx X. Xxxxxxxxxx
                                      ------------------------------
                                            Xxxxxx X. Xxxxxxxxxx
                                            President


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                                   Xxxxxx X. Xxxxxxxxxx

                                        /s/ Xxxxxx X. Xxxxxxxxxx
                                      ------------------------------



                                   Xxxxxx X. Xxxx, Xx.

                                        /s/ Xxxxxx X. Xxxx, Xx.
                                      ------------------------------


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