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OMB APPROVAL
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OMB NUMBER: 3235-0145
Expires: August 31, 1999
Estimated average burden
hours per response . . 14.90
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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(AMENDMENT NO. 8 )*
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TETRA TECH,INC.
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(Name of Issuer)
COMMON STOCK, $0.01 PAR VALUE
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(Title of Class of Securities)
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881 62G 103
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(CUSIP Number)
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DECEMBER 31, 2000
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(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:
|_| Rule 13d-1(b)
|_| Rule 13d-1(c)
|X| Rule 13d-1(d)
*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.
The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).
POTENTIAL PERSONS WHO ARE TO RESPOND TO THE COLLECTION OF INFORMATION CONTAINED
IN THIS FORM ARE NOT REQUIRED TO RESPOND UNLESS THE FORM DISPLAYS A CURRENTLY
VALID OMB CONTROL NUMBER.
SEC 1745 (3-98)
Page 1 of 5 pages
CUSIP No. 881 62G 103
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1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
LI-SAN HWANG
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2. Check the Appropriate Box if a Member of a Group
(See Instructions)
(a)
(b)
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3. SEC Use Only
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4. Citizenship or Place of Organization UNITED STATES OF
AMERICA
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NUMBER OF 5. Sole Voting Power 1,839,409
SHARES ------------------------------------------------------------
BENEFICIALLY 6. Shared Voting Power -0-
OWNED BY ------------------------------------------------------------
EACH 7. Sole Dispositive Power 1,839,409
REPORTING ------------------------------------------------------------
PERSON WITH 8. Shared Dispositive Power -0-
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9. Aggregate Amount Beneficially Owned
by Each Reporting Person 1,839,409
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10. Check if the Aggregate Amount in Row (11) Excludes
Certain Shares (See Instructions)
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11. Percent of Class Represented by Amount in Row (11) 4.6%
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12. Type of Reporting Person (See Instructions) IN
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Page 2 of 5 pages
ITEM 1.
(a) Name of Issuer TETRA TECH, INC.
(b) Address of Issuer's Principal 670 NORTH ROSEMEAD BOULEVARD
Executive Offices PASADENA, CALIFORNIA 91107
ITEM 2.
(a) Name of Person Filing LI-SAN HWANG
(b) Address of Principal Business Office 670 NORTH ROSEMEAD BOULEVARD
or, if none, Residence PASADENA, CALIFORNIA 91107
(c) Citizenship UNITED STATES OF AMERICA
(d) Title of Class of Securities COMMON STOCK, $0.01 PAR VALUE
(e) CUSIP Number 881 62G 103
ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO SECTIONS 240.13d-1(b) OR
240.13d-2(b) OR (c), CHECK WHETHER THE PERSON FILING IS A:
(a) |_| Broker or dealer registered under section 15 of the Act (15 U.S.C.
78o).
(b) |_| Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).
(c) |_| Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C.
78c).
(d) |_| Investment company registered under section 8 of the Investment Company
Act of 1940 (15 U.S.C. 80a-8).
(e) |_| An investment adviser in accordance with Section 240.13d-1(b)(1)(ii)
(E);
(f) |_| An employee benefit plan or endowment fund in accordance
with Section 240.13d-1(b)(1)(ii)(F);
(g) |_| A parent holding company or control person in accordance
with Section 240.13d-1(b)(1)(ii)(G);
(h) |_| A savings associations as defined in Section 3(b) of the Federal
Deposit Insurance Act (12 U.S.C. 1813);
(i) |_| A church plan that is excluded from the definition of an investment
company under section 3(c)(14) of the Investment Company Act of 1940
(15 U.S.C. 80a-3);
(j) |_| Group, in accordance with Section 240.13d-1(b)(1)(ii)(J).
Page 3 of 5 pages
ITEM 4. OWNERSHIP.
Provide the following information regarding the aggregate number and
percentage of the class of securities of the issuer identified in Item 1.
(a) Amount beneficially owned: 1,839,409
(b) Percent of class: 4.6%
(c) Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote 1,839,409
(ii) Shared power to vote or to direct the vote -0-
(iii) Sole power to dispose or to direct the disposition of 1,839,409
(iv) Shared power to dispose or to direct the disposition of -0-
ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS
If this statement is being filed to report the fact that as of the date
hereof the reporting person has ceased to be the beneficial owner of more than
five percent of the class of securities, check the following |X|.
ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.
NOT APPLICABLE
ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE
SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY
NOT APPLICABLE
ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP
NOT APPLICABLE
ITEM 9. NOTICE OF DISSOLUTION OF GROUP
NOT APPLICABLE
ITEM 10. CERTIFICATION
(a) The following certification shall be included if the statement is
filed pursuant to Section 240.13d-1(b):
By signing below I certify that, to the best of my knowledge
and belief, the securities referred to above were acquired
and are held in the ordinary course of business and were not
acquired and are not held for the purpose of or with the
effect of changing or influencing the control of the issuer
of the securities and were not acquired and are not held in
connection with or as a participant in any transaction
having that purpose or effect.
(b) The following certification shall be included if the statement is
filed pursuant to Section 240.13d-1(c):
By signing below I certify that, to the best of my knowledge
and belief, the securities referred to above were not
acquired and are not held for the purpose of or with the
effect of changing or influencing the control of the issuer
of the securities and were not acquired and are not held in
connection with or as a participant in any transaction
having that purpose or effect.
Page 4 of 5 pages
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.
February 14, 2001
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Date
/s/ Li-San Hwang
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Signature
Li-San Hwang
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Name/Title
The original statement shall be signed by each person on whose behalf the
statement is filed or his authorized representative. If the statement is signed
on behalf of a person by his authorized representative other than an executive
officer or general partner of the filing person, evidence of the
representative's authority to sign on behalf of such person shall be filed with
the statement, provided, however, that a power of attorney for this purpose
which is already on file with the Commission may be incorporated by reference.
The name and any title of each person who signs the statement shall be typed or
printed beneath his signature.
NOTE: Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Section 240.13d-7 for other
parties for whom copies are to be sent.
ATTENTION: INTENTIONAL MISSTATEMENTS OR OMISSIONS OF FACT CONSTITUTE FEDERAL
CRIMINAL VIOLATIONS (SEE 18 U.S.C. 1001)
MHODMA.LADOCS;218614;1 (218614)
Page 5 of 5 pages