TETRA TECH INC
SC 13D, 1997-06-23
ENGINEERING SERVICES
Previous: TETRA TECH INC, SC 13G/A, 1997-06-23
Next: RISER FOODS INC /DE/, SC 14D1/A, 1997-06-23



                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549


                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934


                                Tetra Tech, Inc.
                                (Name of Issuer)


                    Common Stock ($0.01 par value per share)
                         (Title of Class of Securities)


                                   881-62G-103
                                 (CUSIP Number)


                                Daniel A. Whalen
                               5866 Ostrander Road
                                Oakland, CA 94618
                                  510-283-7700
- --------------------------------------------------------------------------------
            (Name, Address and Telephone Number of Person Authorized
                     to Receive Notices and Communications)


                                  June 11, 1997
- --------------------------------------------------------------------------------
             (Date of Event which Requires Filing of this Statement)


If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  which is the subject of this  Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box: |_|

- --------------------------------------------------------------------------------


                                Page 1 of 6 Pages

<PAGE>


- --------------------------------------------------------------------------------

CUSIP No.:  881-62G-103                                       Page 2 of 6 Pages
- --------------------------------------------------------------------------------


(1) NAME OF REPORTING PERSON:  Daniel A. Whalen

    S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON:   468-5636-37

- --------------------------------------------------------------------------------
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP           (a)      |_|
                                                               (b)      |_|
- --------------------------------------------------------------------------------
(3) SEC USE ONLY


- --------------------------------------------------------------------------------
(4) SOURCE OF FUNDS*                                                 
     OO

- --------------------------------------------------------------------------------
(5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
    ITEMS 2(d) or 2(e)                                                   |_|

- --------------------------------------------------------------------------------
(6) CITIZENSHIP OR PLACE OF ORGANIZATION

         United States

- --------------------------------------------------------------------------------
        NUMBER OF               (7)      SOLE VOTING POWER
          SHARES                               2,802,646
                            ----------------------------------------------------
       BENEFICIALLY             (8)      SHARED VOTING POWER
         OWNED BY                                109,194
                            ----------------------------------------------------
           EACH                 (9)      SOLE DISPOSITIVE POWER
        REPORTING                              2,802,646
                            ----------------------------------------------------
          PERSON               (10)     SHARED DISPOSITIVE POWER
           WITH                                  109,194
- --------------------------------------------------------------------------------
         (11)  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                   2,911,840
- --------------------------------------------------------------------------------
         (12)  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
               CERTAIN SHARES*                                          |_|

- --------------------------------------------------------------------------------
         (13)     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                   17.9 %
- --------------------------------------------------------------------------------
         (14)      TYPE OF REPORTING PERSON*

                   IN
- --------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>



     Item 1.  Security and Issuer

     This  Statement  relates to the  common  stock,  par value  $0.01 per share
("Common  Stock"),  of Tetra Tech, Inc., a Delaware  corporation (the "Issuer").
The  address  of the  principal  executive  offices  of the  Issuer is 670 North
Rosemead Boulevard, Pasadena, California 91107.

     Included in this Statement are the shares of Series A preferred  stock, par
value $0.01 per share ("Preferred  Stock"),  of the Issuer beneficially owned by
Daniel A. Whalen. Each share of Preferred Stock will be automatically  converted
into  one  share  of  Common  Stock  upon  the  filing  of an  amendment  to the
Certificate  of  Incorporation  of the  Issuer  that  increases  the  number  of
authorized  shares of Common Stock to an amount sufficient to convert all of the
then-outstanding  shares of Preferred  Stock (the  "Amendment").  The Issuer has
agreed to use commercially reasonable efforts to obtain the stockholder approval
necessary for the Amendment.

     Item 2. Identity and Background

     (a)  Daniel A. Whalen (the "Reporting Person")

     (b)  Address: 5866 Ostrander Road, Oakland, California 94618

     (c)  President  and  Chief  Executive  Officer  of Whalen &  Company,  Inc.
          ("WhalenCo")  and Whalen  Service  Corps Inc.  ("Whalen  Service," and
          together with WhalenCo, the "Whalen Companies"),  with offices located
          at 3675 Mt. Diablo Boulevard, Suite 360, Lafayette,  California 94549.
          The Whalen  Companies assist their clients in the acquisition of sites
          for wireless telecommunications facilities.

     (d)  During  the  last  five  years,  the  Reporting  Person  has not  been
          convicted in a criminal  proceeding  (excluding  traffic violations or
          similar misdemeanors).

     (e)  During the last five years,  the Reporting Person has not been a party
          to a  civil  proceeding  of  a  judicial  or  administrative  body  of
          competent  jurisdiction  and as a result of such  proceeding was or is
          subject  to  a  judgment,  decree  or  final  order  enjoining  future
          violations of, or prohibiting  activities subject to, federal or state
          securities laws.

     (f)  United States

     Item 3. Source and Amount of Funds or Other Consideration

     (a)  Pursuant to the Agreement and Plan of Reorganization among the Issuer,
          the Whalen  Companies,  and the  stockholders of the Whalen  Companies
          dated  June 11,  1997 (the  "Agreement"),  the Whalen  Companies  were


                                  Page 3 of 6
<PAGE>

          merged with and into the Issuer. The stock of the Whalen Companies was
          converted  into a right to receive  1,680,000  shares of Common Stock,
          1,231,840  shares  of  Preferred  Stock and  other  good and  valuable
          consideration.

     (b)  Pursuant to the  Agreement,  the size of the board of directors of the
          Issuer was  increased to five members and Daniel A. Whalen was elected
          as a director.

     (c)  Beneficial  ownership of 1,617,000  shares of Common Stock is obtained
          through the direct ownership of such shares by the Reporting Person.

     (d)  Beneficial  ownership of 63,000 shares of Common Stock is derived from
          the   reporting   Person's   position  as  co-trustee  of  six  trusts
          established for the benefit of the Reporting Person's  children.  Each
          trust owns 10,500 shares of Common Stock.

     (e)  Beneficial  ownership of  1,185,646  shares of Common Stock is derived
          through the direct ownership of 1,185,646 shares of Preferred Stock by
          the Reporting  Person.  Such shares of Preferred Stock are convertible
          into shares of Common Stock in the manner described in Item 1 above.

     (f)  Beneficial  ownership of 46,194 shares of Common Stock is derived from
          the   reporting   Person's   position  as  co-trustee  of  six  trusts
          established for the benefit of the Reporting Person's  children.  Each
          trust owns 7,699 shares of Preferred  Stock.  Such shares of Preferred
          Stock  are  convertible  into  shares of  Common  Stock in the  manner
          described in Item 1 above.

     Item 4. Purpose of Transaction

     The  information  set forth in the response to Item 3 above is incorporated
herein by reference.

     Item 5. Interest in Securities of the Issuer

     The response to Item 3 is  incorporated  herein by  reference.  Pursuant to
Rule 13d-3 of the  Securities  Exchange Act of 1934,  as amended,  the Reporting
Person is deemed to  beneficially  own  2,911,840  shares of Common  Stock which
constitutes  approximately  17.9%  of the  16,245,913  shares  of  Common  Stock
outstanding.  The number of shares of Common Stock outstanding is the sum of the
shares (i) represented to be outstanding by the Issuer in the Agreement and (ii)
issued pursuant to the Agreement.

     Item 6.  Contracts,  Arrangements,  Understandings  or  Relationships  with
Respect to Securities of the Issuer

                                  Page 4 of 6

<PAGE>

     The  information  set  forth  in the  responses  to  Items 3 and 4 above is
incorporated herein by reference.

         Item 7.  Material to be filed as Exhibits

         Not applicable



                  {remainder of page intentionally left blank}


                                  Page 5 of 6


<PAGE>



                                    SIGNATURE

         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.

Dated: June 23, 1997



                                DANIEL A. WHALEN


                                /s/ Daniel A. Whalen
                                --------------------




                                  Page 6 of 6



© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission