Schedule 13 G
Item 1 (a) ATC Group Services, Inc.
(b) 104 East 25th Street 10th Floor
New York, NY 10010
Item 2 (a) Corbyn Investment Management, Inc., et al.
(b) Suite 108
2330 W. Joppa Road
Lutherville, Maryland 21093
(c) Incorporated in the State of Maryland
(d) Common Stock
(e) 002067106
Item 3 (h) The filer is a group consisting of an Investment Adviser
registered under Section 203 of the Investment Advisers Act of
1940 and an Investment Company registered under Section 8 of
the Investment Company Act.
Item 4 (a) 1,034,199
(b) 13.28%
(c) (i) Sole power to vote or direct the vote of all 1,034,199 shares
(iii) Sole power to dispose of or direct the disposition of all
1,034,199 shares
Item 5 N/A
Item 6 N/A
Item 7 N/A
Item 8 (a) The group consists of an Investment Adviser registered under
Section 203 of the Investment Advisers Act of 1940 (IA) and an
Investment Company registered under Section 8 of the Investment
Company Act (IV).
Item 9 N/A
<PAGE>
Schedule 13 G
Item 1 (a) ATC Group Services, Inc.
(b) 104 East 25th Street, 10th Floor
New York, NY 10010
Item 2 (a) Corbyn Investment Management, Inc.
(b) Suite 108
2330 W. Joppa Road
Lutherville, Maryland 21093
(c) Incorporated in the State of Maryland
(d) Common Stock
(e) 002067106
Item 3 (e) The filer is an Investment Adviser registered under Section
203 of the Investment Advisers Act of 1940.
Item 4 (a) 698,325
(b) 8.97%
(c) (i) Sole power to vote or direct the vote of all 698,325 shares
(iii) Sole power to dispose of or direct the disposition of
all 698,325 shares
Item 5 N/A
Item 6 N/A
Item 7 N/A
Item 8 N/A
Item 9 N/A
<PAGE>
Schedule 13 G
Item 1 (a) ATC Group Services, Inc.
(b) 104 East 25th Street, 10th Floor
New York, NY 10010
Item 2 (a) Greenspring Fund, Inc.
(b) Suite 110
2330 W. Joppa Road
Lutherville, Maryland 21093
(c) Incorporated in the State of Maryland
(d) Common Stock
(e) 002067106
Item 3 (d) The filer is an Investment Company registered under Section 8
of the Investment Company Act.
Item 4 (a) 335,874
(b) 4.31%
(c) (i) Sole power to vote or direct the vote of all 335,874 shares
(iii) Sole power to dispose of or direct the disposition of
all 335,874 shares
Item 5 N/A
Item 6 N/A
Item 7 N/A
Item 8 N/A
Item 9 N/A
Item 10 By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were acquired in the ordinary course
of business and were not acquired for the purpose of and do not have the
effect of changing or influencing the control of the issuer of such
securities and were not acquired in connection with or as a participant
in any transaction having such purposes or effect.
After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete
and correct.
Date: February 14, 1997
Signature: Charles vK. Carlson, President
Name/Title: Charles vK. Carlson, President
<PAGE>
CUSIP No. 002067106 13G
1. Name of Reporting Person
SS Identification No. of Above Person
Corbyn Investment Management, Inc. et al
n/a
2. Check The Appropriate Box If A Member Of A Control Group (a) [x]
(b) [ ]
3. SEC Use Only
4. Citizenship or Place of Organization
Suite 108 2330 W. Joppa Rd.
Lutherville, MD 21093
Number of Shares Beneficially Owned By Each Reporting Person With
5. Sole Voting Power
1,034,199
6. Shared Voting Power
7. Sole Dispositive Power
1,034,199
8. Shared Dispositive Power
9. Aggregate Amount Beneficially Owned By Each Reporting Person
1,034,199
10. Check Box if the Aggregate Amount in Row (9) Excludes
Certain Shares [ ]
11. Percent Of Class Represented By Amount In Row 9
13.28%
12. Type Of Reporting Person
00- Group Consisting of IA and IV
<PAGE>
CUSIP No. 002067106 13G
1. Name of Reporting Person
SS Identification No. of Above Person
Corbyn Investment Management, Inc.
52-0964322
2. Check The Appropriate Box If A Member Of A Control Group (a) [x]
(b) [ ]
3. SEC Use Only
4. Citizenship or Place of Organization
Suite 108 2330 W. Joppa Rd.
Lutherville, MD 21093
Number Of Shares Beneficially Owned By Each Reporting Person With
5. Sole Voting Power
698,325
6. Shared Voting Power
7. Sole Dispositive Power
698,325
8. Shared Dispositive Power
9. Aggregate Amount Beneficially Owned By Each Reporting Person
698,325
10. Check Box if the Aggregate Amount in Row (9) Excludes
Certain Shares [ ]
11. Percent Of Class Represented By Amount In Row 9
8.97%
12. Type Of Reporting Person
IA
<PAGE>
CUSIP No. 002067106 13G
1. Name of Reporting Person
SS Identification No. of Above Person
Greenspring Fund, Inc.
52-1267740
2. Check The Appropriate Box If A Member Of A Control Group (a) [x]
(b) [ ]
3. SEC Use Only
4. Citizenship or Place of Organization
Suite 110 2330 W. Joppa Rd.
Lutherville, MD 21093
Number Of Shares Beneficially Owned By Each Reporting Person With
5. Sole Voting Power
335,874
6. Shared Voting Power
7. Sole Dispositive Power
335,874
8. Shared Dispositive Power
9. Aggregate Amount Beneficially Owned By Each Reporting Person
335,874
10. Check Box if the Aggregate Amount in Row (9) Excludes
Certain Shares [ ]
11. Percent Of Class Represented By Amount In Row 9
4.31%
12. Type Of Reporting Person
IV
