SEVENSON ENVIRONMENTAL SERVICES INC
DEF 14A, 2000-04-17
HAZARDOUS WASTE MANAGEMENT
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                    SCHEDULE 14 A INFORMATION

   PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES
                      EXCHANGE ACT OF 1934


Filed by the Registrant  [x]

Filed by a Party other than the Registrant [  ]

Check the appropriate box:

[  ] Preliminary Proxy Statement        [  ]  Confidential,
                                        for Use of the Commission
                                        Only (as permitted by
Rule 14a-6(e)(2))
[x]  Definitive Proxy Statement
[ ]  Definitive Additional Materials
[ ]  Soliciting Material Pursuant to Section 240.14a-11(c) or
Section 240.14a-2.

              SEVENSON ENVIRONMENTAL SERVICES, INC.
_________________________________________________________________
        (Name of Registrant as Specified In Its Charter)

_________________________________________________________________
    (Name of Person(s) Filing Proxy Statement, if other than
Registrant))

Payment of Filing Fee (Check the appropriate box):

[x]  No fee required.

[ ]  Fee computed on table below per Exchange Act Rules 14a-
     6(i)(4) and 0-12.

     (1)  Title of each class of securities to which transaction
          applies:

________________________________________________________________

     (2)  Aggregate number of securities to which transaction
          applies:

________________________________________________________________

     (3)  Per unit price or other underlying value of transaction
          computed pursuant to Exchange Act Rule 0-11 (Set forth
          the amount on which the filing fee is calculated and
          state how it was determined):
          _______________________________________________________

     (4)  Proposed maximum aggregate value of transaction:
          _______________________________________________________

     (5)  Total fee paid:
          _______________________________________________________


<PAGE>
[ ]  Fee paid previously with preliminary materials.

[ ]  Check box if any part of the fee is offset as provided by
     Exchange Act Rule 0-11(a)(2) and identify the filing for
     which the offsetting fee was paid previously.  Identify the
     previous filing by registration statement number, or the
     Form or Schedule and the date of its filing.

     (1)  Amount Previously Paid:


     (2)  Form, Schedule or Registration Statement No.:

     (3)  Filing Party:

     (4)  Date Filed:











































<PAGE>
[LOGO]        SEVENSON ENVIRONMENTAL SERVICES INC.
                       2749 Lockport Road
               Niagara Falls, New York 14305-2229


                    NOTICE OF ANNUAL MEETING


TO ALL STOCKHOLDERS:

     NOTICE IS HEREBY GIVEN that the Annual Meeting of
Stockholders of Sevenson Environmental Services, Inc., a New York
corporation, will be held at the Comfort Inn, One Prospect Point,
Niagara Falls, New York, on May 23, 2000, at 10:00 a.m., for the
following purposes:

     (1)  To elect eight Directors, two of whom will be Class A
Directors elected by holders of Common Stock and six of whom will
be Class B Directors elected by holders of Class B Common Stock,
such Directors to hold office until the next Annual Meeting of
Stockholders and until their successors are elected and
qualified.

     (2)  To ratify the appointment by the Board of Directors of
Deloitte & Touche LLP as independent accountants to audit the
accounts of the Company for the fiscal year ending December 31,
2000.

     (3)  To transact such other business as may properly come
before the meeting.

                         By Order of the Board of Directors,

                         WILLIAM J. McDERMOTT

                         Secretary

April 17, 2000



WHETHER OR NOT YOU PLAN TO ATTEND THE MEETING, PLEASE MARK, DATE,
SIGN AND PROMPTLY RETURN THE ENCLOSED PROXY IN THE ENVELOPE
PROVIDED.















<PAGE>
                         PROXY STATEMENT
               FOR ANNUAL MEETING OF STOCKHOLDERS
                               OF
              Sevenson Environmental Services, Inc.

                         _______________

                          TO BE HELD AT
                         THE COMFORT INN
                       ONE PROSPECT POINT
                     NIAGARA FALLS, NEW YORK
                         ON MAY 23, 2000
                         _______________


                         PROXY STATEMENT

GENERAL MATTERS


     The accompanying proxy is solicited by the Board of
Directors of Sevenson Environmental Services, Inc. (the
"Company") for the Annual Meeting of Stockholders of the Company
(the "Annual Meeting") to be held at the Comfort Inn, One
Prospect Point, Niagara Falls, New York, 14303, on Tuesday,
May 23, 2000, at 10:00 a.m. This Proxy Statement and the enclosed
form of proxy are first being mailed to stockholders on or about
April 17, 2000.

     The cost of solicitation of proxies will be borne by the
Company.  Solicitation other than by mail may be made by officers
or by regular employees of the Company, who will receive no
additional compensation therefor, by personal or telephone
solicitation, the cost of which is expected to be nominal.  The
Company will reimburse brokerage firms and other securities
custodians for their expenses in forwarding proxy materials to
their principals.

     Only holders of shares of Common Stock, par value $.01 per
share (the "Common Stock") and the Company's Class B Common
Stock, par value $.01 per share (the "Class B Common Stock") of
record at the close of business on April 6, 2000 will be entitled
to notice of and to vote at the meeting and at all adjournments
thereof.  At the close of business on April 6, 2000, the Company
had outstanding approximately 2,142,019 shares of Common Stock
and 7,394,210 shares of Class B Common Stock.  At the meeting,
the holders of Common Stock will be entitled, as a class, to
elect two Directors (the "Class A Directors") and the holders of
Class B Common Stock will be entitled, as a class, to elect the
remaining six Directors (the "Class B Directors").

     Except for the election of Directors and except for class
votes as required by law, holders of both classes of Common Stock
vote or consent as a single class on all matters, with each share
of Common Stock having one vote per share and each share of
Class B Common Stock having ten votes per share.



<PAGE>
     Shares of Common Stock represented by the proxies in the
form enclosed, properly executed, will be voted in the manner
designated, or if no instructions are indicated, in favor of
Directors named therein and for the ratification of the
appointment of Deloitte & Touche LLP as independent accountants.
In their discretion the Proxies are authorized to vote upon such
other business as may properly come before the Annual Meeting.
The proxy given by the enclosed proxy card may be revoked at any
time before it is voted by delivering to the Secretary of the
Company a written revocation or a duly executed proxy bearing a
later date, or by attending the Annual Meeting and voting in
person.


SECURITY OWNERSHIP OF MANAGEMENT AND PRINCIPAL STOCKHOLDERS


     The following table sets forth information concerning the
persons known to the Company to beneficially own, as defined in
Rule 13d-3 under the Securities Exchange Act of 1934, more than
5% of the outstanding shares of Common Stock or Class B Common
Stock, the number of shares of each class owned by each Director
of the Company, the named executive officers and by all executive
officers and Directors as a group, as of March 14, 2000, and the
aggregate voting power held by such persons and the group in
circumstances where Class B Common Stock votes as one class with
the Common Stock.
                                Shares of       Shares of Class B
Name(l)                      Common Stock(2)     Common Stock(2)
___________________          _______________    _________________
                                                                     Voting
                            Number Percentage   Number Percentage    Power
                            ______ __________   ______ __________    ______
Artisan Partners Limited
  Partnership
1000 North Water St.#1770   229,400   10.71%       0        0         .30%
Milwaukee, WI 53202

Royce & Associates, Inc.  1,129,720   52.74%       0        0        1.47%
1414 Avenue of the Americas
New York, NY 1001 9
___________________________________________________________________________
Michael A. Elia                 0        0    1,351,430(6) 18.28%   17.76%
___________________________________________________________________________
Laurence A. Elia                0        0    1,381,760(7) 18.69%   18.16%
___________________________________________________________________________
Richard A. Elia                 0        0    1,383,260(8) 18.71%   18.18%
___________________________________________________________________________
William J. McDermott            0        0    1,399,740(9) 18.93%   18.40%
___________________________________________________________________________
Alan R. Elia, Jr.            7,000(3)    *      245,000(3)  3.31%    3.22%
___________________________________________________________________________
Arthur A. Elia              19,540(4)    *        0           0        *
___________________________________________________________________________
Dena M. Armstrong           19,700(5)    *        0           0        *
___________________________________________________________________________



<PAGE>
___________________________________________________________________________
Joseph J. Castiglia          1,600       *        0           0        *
___________________________________________________________________________
Robert S. Kelso                320       *        0           0        *
___________________________________________________________________________
All officers and Directors
as a group                  48,160       *    5,761,190    77.92%   75.72%
___________________________________________________________________________

*Less than 1%

(1)  Unless otherwise noted, the address of all beneficial owners is c/o
     Sevenson Environmental Services, Inc., 2749 Lockport Road, Niagara
     Falls, New York 14305-2229.

(2)  Beneficial ownership has been determined in accordance with Rule 13d-3
     under the Securities Exchange Act of 1934, and individuals may
     disclaim beneficial ownership for other purposes.  Each stockholder
     has sole investment and voting power over the shares opposite his name
     unless otherwise indicated.  The Class B stockholders are parties to a
     Voting Agreement pursuant to which all shares of Class B Common Stock
     are to be voted in accordance with the majority vote, except in
     situations in which there exist certain conflicts of interest.  The
     Voting Agreement commenced in 1989, was for a term of ten years and
     was renewed in 1999 for a term of ten years.

(3)  Does not include 11,240 shares of Common Stock held in trusts, of
     which he is a co-trustee, for the benefit of his children and as to
     which he disclaims beneficial ownership and 1,119,240 Class B shares
     held by a trust of which he and his father, Alan R. Elia, Sr., are
     co-trustees.

(4)  Does not include 8,170 shares of Common Stock held by his spouse as to
     which he disclaims beneficial ownership.

(5)  Includes 15,600 shares of Common Stock which may be acquired under
     options.  Does not include 6,000 shares held by her spouse as
     custodian for her minor children as to which she disclaims beneficial
     ownership.

(6)  Does not include 72,000 Class B shares held by his spouse and 48,640
     Class B shares held by his spouse as custodian for his minor children
     as to which he disclaims beneficial ownership and 27,120 Class B
     shares held in trusts, of which he is a co-trustee, for the benefit of
     his minor children, and as to which he disclaims beneficial ownership.

(7)  Does not include 80,000 Class B shares held by his spouse and 36,480
     Class B shares held by his spouse as custodian for his minor children
     as to which he disclaims beneficial ownership and 11,100 Class B
     shares held in trusts for the benefit of his minor children of which
     he is a co-trustee and as to which he disclaims beneficial ownership.

(8)  Does not include 80,000 Class B shares held by his spouse and 36,480
     Class B shares held by his spouse as custodian for his minor children
     as to which he disclaims beneficial ownership and 9,600 Class B shares
     held in trusts for the benefit of his minor children of which he is a
     co-trustee and as to which he disclaims beneficial ownership.


<PAGE>

(9)  Does not include 80,000 Class B shares held by his spouse
     and 24,320 Class B shares held by his spouse as custodian
     for his minor children as to which he disclaims beneficial
     ownership and 8,040 Class B shares held in trusts for the
     benefit of his minor children of which he is a co-trustee
     and as to which he disclaims beneficial ownership.


ELECTION OF DIRECTORS

     It is intended that proxies solicited by the Board of
Directors will, unless otherwise directed, be voted to elect the
two nominees for Class A Director named below.  The Class B
Directors will be elected by the holders of the Class B Common
Stock.  Holders of Common Stock are not entitled to vote on the
election of the Class B Director nominees.  Directors are elected
by a plurality of the votes cast; accordingly, abstentions and
broker non-votes will have no effect.

     The nominees proposed for election to the Board of Directors
are all presently members of the Board.  The nominees named
herein, if elected as Class A Directors, will hold office until
the next succeeding Annual Meeting of Stockholders and until
their successors are duly elected and qualified.  In the event
either nominee for Class A Director becomes unavailable and a
vacancy exists, it is intended that the persons named in the
proxy may vote for a substitute who will be recommended by the
remaining Director.  It is anticipated that Michael A. Elia,
Laurence A. Elia, Richard A. Elia, William J. McDermott and Alan
R. Elia, Jr., who own 77.9% of the Class B Common Stock (the
"Principal Stockholders"), will execute a proxy authorizing the
voting for all of the nominees for Class B Directors.  The Board
of Directors has no reason to believe that any of the nominees
will be unable to serve as Directors.  All Directors have served
continuously as such from the year stated.
























<PAGE>

_________________________________________________________________
                                 Director
Name                      Age     Since      Title
_________________________________________________________________
Nominees for
Class A Directors

Joseph J. Castiglia       65       1989      Director
Robert S. Kelso           79       1989      Director
_________________________________________________________________

Nominees for
Class B Directors

Michael A. Elia           48       1980      President, Chief
                                              Executive Officer
                                              and Director
Laurence A. Elia          49       1979      Vice President and
                                              Director
Richard A. Elia           46       1982      Executive Vice
                                              President and
                                              Director
William J. McDermott      50       1979      Vice President -
                                              Finance, Secretary
                                              and Director
Dena M. Armstrong         42       1982      Assistant Vice
                                              President -
                                              Finance, Treasurer
                                              and Director
Arthur A. Elia            71       1979      Director
_________________________________________________________________


     JOSEPH J. CASTIGLIA, former Vice Chairman, President and
Chief Executive Officer of Pratt & Lambert United, Inc., (paint,
industrial coatings, and adhesives manufacturer) Buffalo, NY. is
presently a business consultant and private investor, JBC
Enterprises, East Aurora, NY.  He also serves as Chairman,
Catholic Health System of Western New York (consortium of
hospitals); Chairman, Blue Cross & Blue Shield of Western New
York, Inc. (health care and health insurance company); Director,
New York State Electric and Gas Corporation (utility); Director,
Vision Group of Funds and Vision Fiduciary Funds, Inc. (mutual
fund group); and Director, Community Foundation for Greater
Buffalo.  Mr. Castiglia was Vice Chairman, President and Chief
Executive Officer of Pratt & Lambert United, Inc. from August
1994 until his retirement in January 1996.  Prior to that time,
he was President and Chief Executive Officer of Pratt & Lambert,
Inc. from 1989 until July 1994, at which time the company was
merged with United Coatings, Inc.  He received his B.B.A. degree
from Canisius College and is a Certified Public Accountant in the
State of New York.







<PAGE>
     ROBERT S. KELSO served as President, Chief Executive Officer
and a Director of Calspan Corporation (aerospace research and
development company) from 1970 until his retirement in 1978.
From 1984 until 1993 he served as a Director of Blue Shield of
Western New York, Inc. (health care and health insurance
company).  He received B.S. and M.S. degrees in engineering from
the Massachusetts Institute of Technology and the University of
Michigan, respectively.

     MICHAEL A. ELIA has served as Chief Executive Officer of the
Company since 1984.  Prior to 1984 he served as Vice President in
charge of construction operations of the Company.  He received
his B.S. degree in Civil Engineering from Villanova University.
Mr. Elia is also a director of Sovran Self Storage, Inc., a real
estate investment trust which owns and operates self-storage
centers.

     LAURENCE A. ELIA has served as a Vice President of the
Company and its predecessors since 1975 and in various executive
capacities prior to that time.  He received his A.B. and B.S.
degrees in Engineering from Dartmouth College.

     RICHARD A. ELIA has served as a Vice President of the
Company since 1982 and in various executive capacities prior to
that time.  He received his B.S. degree in Business
Administration from Villanova University.

     WILLIAM J. MCDERMOTT has served as Vice President-Finance of
the Company since 1986, and as Secretary since 1987.  Prior to
1986 he served as legal counsel with the Company and its prede-
cessors.  He received his J.D. and B.S. (Civil Engineering)
degrees from the State University of New York at Buffalo.  He is
a member of the New York bar.

     DENA M. ARMSTRONG has been employed by the Company and its
predecessors since 1975.  Since 1982 she has served as Assistant
Vice President-Finance.  She received her B.S. degree from
Niagara University.

     ARTHUR A. ELIA has been with the Company including its
predecessors since 1947.  From 1947 until 1982 he served as a
Vice President.  From 1982 to 1984 he served as the Chief
Executive Officer of the Company.  Arthur Elia is the father of
Michael, Laurence and Richard Elia and Dena M. Armstrong is their
cousin.

The Board of Directors recommends a vote FOR the election of the
above nominees.


BOARD OF DIRECTORS AND COMMITTEES


     During 1999, the Board of Directors had five meetings.  The
Board of Directors has an Audit Committee consisting of Messrs.
Castiglia and Kelso and a Compensation Committee consisting of
Messrs. Castiglia, Kelso and Arthur A. Elia.  The Board of
Directors does not have a nominating committee.

<PAGE>

     The Audit Committee recommends independent accountants for
selection by the Board of Directors, reviews the results and
scope of the audit and the services provided by and the fees paid
to the independent accountants.  The Audit Committee also reviews
semi-annually the allocation of expenses pursuant to the Services
Agreement between the Company and SCC Contracting, Inc. (SCC), a
general construction business owned by the Principal
Stockholders.  See "Certain Transactions - Transactions with
SCC." During 1999, the Audit Committee had two meetings.

     The Compensation Committee makes recommendations to the
Board of Directors with respect to compensation of Directors and
executive officers.  The Committee administers the Bonus Plan and
the 1989 Incentive Stock Plan.  During 1999, the Compensation
Committee had one meeting.

     Every member of the Board of Directors attended at least 75%
of the meetings of the Board and of the committees of which the
Director is a member.


REMUNERATION OF DIRECTORS

     Directors who are not employees of the Company are paid an
annual retainer of $6,000 plus a fee of $1,000 for each meeting
of the Board of Directors attended, and each meeting of a commit-
tee of the Board of Directors attended when not scheduled on the
same day as a Board Meeting, and are reimbursed for their
expenses incurred in attending such meetings.

     In accordance with the provisions of the 1989 Incentive
Stock Plan, each non-employee Director is entitled to receive a
one-time, non-discretionary option to acquire 4,800 shares of
Common Stock.


EXECUTIVE COMPENSATION

Compensation Committee Report on Executive Compensation
_______________________________________________________

     Decisions on compensation of the Company's executives
generally are made by the three member Compensation Committee of
the Board (the "Committee").  Each member of the Committee is a
non-employee director.  All decisions by the Committee relating
to the compensation of the Company's executive officers are
reviewed by the full Board, except for decisions about awards
under the Company's 1989 Incentive Stock Plan (the "Plan").

     The Company's executive compensation policies are to provide
competitive levels of compensation that integrate pay with the
Company's performance goals, reward profitability, recognize
individual initiative and achievements, and assist the Company in
attracting and retaining qualified executives.  In 1999, these
policies were carried out through the compensation components of




<PAGE>
salary, profit sharing, pension, perquisites, bonus and, for
officers other than those named in the following Summary
Compensation Table, stock options.

     Although the Committee has approved modest periodic
increases in the salaries of executive officers other than those
named in the Summary Compensation Table, at the request of the
named executive officers no increase in their salaries was
implemented for a nine year period through 1996.  In subsequent
years, the Committee has approved increases in salary for each of
these officers to offset some of the loss of the value of their
salaries due to inflation.  A competitive salary structure is the
most fundamental component of executive compensation used by the
Committee to assist in attracting and retaining qualified
executives.

     The Committee considers the profitability of the Company in
awarding bonuses under the Bonus Plan, which are awarded based
solely on individual performance and Company profitability.
Bonuses have been awarded to various officers including the named
executive officers, as indicated in the Summary Compensation
Table.  Annual Company contributions to the Company's Profit
Sharing Plan, if any, are made from the Company's current or
accumulated profits and are then allocated among participants
based upon compensation.

     Neither pension allocations nor perquisites, which include
income tax return preparation, club membership dues, interest-
free loans for split dollar life insurance premiums and provision
of or payments for automobiles, relate directly to the Company's
performance.  Instead, these relatively inexpensive components of
executive compensation are primarily viewed as necessary to keep
compensation levels competitive and to assist in attracting and
retaining qualified executives.

     The Committee also believes that stock ownership by
management and employees serves as an incentive to the
enhancement of stockholder value.  In 1999, stock options were
awarded to certain officers, not including those named in the
Summary Compensation Table, and employees.  Because the named
executive officers are also among the Principal Stockholders, the
Committee sees less reason to award them options, stock
appreciation rights ("SARs") or restricted stock.  Accordingly,
while the named executive officers continue to be eligible to
participate in the Plan, and the Committee reserves the right to
make awards to them in the future based on individual or Company
performance, assistance in the attraction or retention of
qualified executives, or other qualitative or quantitative
criteria, it has never awarded the named executive officers any
options, SARs or restricted stock.

     The Committee's approach to establishing Mr. Michael A.
Elia's compensation does not differ from the policies and
criteria described above, except that recognition is given to the
fact that, as President and Chief Executive Officer, Mr. Elia's
responsibility for the Company's performance is incrementally



<PAGE>
greater than that of the other executive officers.  In
particular, the Committee considered the Company's record
revenues and earnings per share for 1999 and that the Company
ended the year with record backlog.  The Committee is pleased
with the Company's performance and its outlook.

                              Compensation Committee:

                              Joseph J. Castiglia
                              Robert S. Kelso
                              Arthur A. Elia



Summary Compensation Table

     The following Summary Compensation Table sets forth
information with respect to the annual and other compensation
paid or accrued by the Company during the years ended December
31, 1999, 1998 and 1997 for (i) the chief executive officer and
(ii) the three other executive officers of the Company whose
annual compensation exceeded $100,000, for services rendered in
all capacities.
_________________________________________________________________
                                   Annual
                                Compensation
Name and Principal              ____________         All Other
Position               Year    Salary   Bonus(l)  Compensation(2)
                                ($)       ($)           ($)
_________________________________________________________________
Michael A. Elia,       1999    218,545     80,042       16,011
 Chief Executive       1998    212,180     53,694       15,880
 Officer               1997    206,000     37,847       16,028
_________________________________________________________________
Richard A. Elia,       1999    207,617     80,042       15,640
 Executive Vice        1998    201,570     53,694       15,737
 President             1997    195,700     37,847       15,887
_________________________________________________________________
William J. McDermott,  1999    196,689     80,042       16,067
 Vice President -      1998    190,960     53,694       16,059
 Finance               1997    185,400     37,847       16,024
_________________________________________________________________
Laurence A. Elia       1999    196,689     80,042       15,938
 Vice President        1998    190,960     53,694       15,937
                       1997    185,400     37,847       16,096
_________________________________________________________________
(1)  Amounts shown in this column represent cash bonuses paid and
     annual awards under the Company's Profit Sharing Plan, in
     which most regular employees participate on the basis of
     compensation.

(2)  Amounts shown for 1999 include the dollar value of split
     dollar life insurance premiums paid by the Company on behalf
     of each of the named executive officers, in the amounts of
     $1,752, $1,381, $1,808, and $1,679, respectively.  Such
     amounts also include Company contributions to the accounts
     of each named executive officer in the defined contribution
     pension plan in the amount of $14,259 each.

<PAGE>

COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION

     Messrs.  Castiglia, Kelso and Arthur A. Elia served on the
Compensation Committee of the Company for the past fiscal year.
The Company pays interest at the annual rate of 9% to Arthur A.
Elia, a Director and a former executive officer of the Company,
and to his brother Alan Elia, Sr., with respect to the
indebtedness incurred by the Company in 1981 in connection with
its acquisition of a construction business owned by them.  The
amount of the principal indebtedness, all of which is unsecured,
owed to Arthur A. Elia and Alan Elia, Sr. as of December 31, 1999
was $1,000,000 each, and interest payments to them in 1999 were
$90,000 each.  The indebtedness to each matures six months after
his death and is funded by life insurance.

     Other than as stated above, during the fiscal year no
Compensation Committee member had any interlocking relationship
with the Company of the type required by Item 402(j) of
Regulation S-K to be disclosed herein.


COMPLIANCE WITH SECTION 16(a) OF THE SECURITIES EXCHANGE
ACT OF 1934

     Section 16(a) of the Securities Exchange Act of 1934
requires the Company's directors and certain officers, and
persons who own more than 10% of a registered class of the
Company's equity securities, to file reports of ownership and
change in ownership with the SEC.  Directors, officers and
greater-than-10% stockholders are required by SEC regulation to
furnish the Company with copies of all Section 16(a) forms they
file.  Based solely on review of information furnished to the
Company, reports filed through the Company and written
representations that no Forms 5 were required, the Company
believes that all Section 16(a) filing requirements applicable to
its directors, officers and greater-than-10% beneficial owners
were complied with during fiscal year 1999, except that Messrs.
Michael A. Elia, Laurence A. Elia, Richard A. Elia, Alan R. Elia,
Jr. and William J. McDermott each filed one late report of a
conversion of shares of Class B Common Stock into an equal number
of shares of Common Stock in connection with gifts made by them.
Reports of those gifts were timely filed.


FIVE-YEAR STOCKHOLDER RETURN COMPARISON

     The following line-graph presentation compares cumulative
stockholder returns on an indexed basis since 1995 with the S&P
500 Stock Index and a peer group of companies selected by the
Company.

     The peer group consists of five companies engaged in the
environmental services, engineering and/or contracting business;
those companies are: CET Environmental Services, Inc., IT Group,





<PAGE>
Michael Baker Corp., URS Corp. and ThermoRetec.  The peer group
has changed from that used last year.  A company in the peer
group last year, Dames & Moore Group, was acquired during 1999
and thus no longer exists as an independent company.  A company
was added to the peer group to take its place, URS Corp.



(GRAPH INSERT)
TOTAL STOCKHOLDER RETURNS
SEVENSON ENVIRONMENTAL SERVICES, INC.
DECEMBER 31, 1994 - DECEMBER 31, 1999


                        Dec 94   Dec 95   Dec 96  Dec 97   Dec 98   Dec 99
                        ______   ______   ______  ______   ______   ______

Sevenson Environmental
  Svcs                 $100.00  $120.77  $128.40  $139.04  $110.57  $117.93
S&P 500 Index          $100.00  $134.11  $161.29  $211.30  $267.65  $319.91
Peer Group             $100.00  $117.17  $136.39  $194.95  $213.08  $196.21


CERTAIN TRANSACTIONS

Transactions with SCC

     Prior to an internal restructuring of the Company completed
before the Company's initial public offering in April, 1989, the
Company also conducted a general construction business.  As part
of the restructuring, the general construction business was
transferred to SCC.  All of the capital stock of SCC was
distributed to and is owned by the Principal Stockholders.  The
business of SCC and the Company have been and are expected to
continue to be operated out of the office, yard and shop
facilities owned by the Company.  SCC has used to varying degrees
and is expected to continue to use the Company's office and
administrative personnel, computer resources, equipment and other
Company personnel.

     An agreement (the "Services Agreement") provides guidelines
for the Company's performance and pricing of services it provides
to SCC and facilities used by SCC.  The Company's charges to SCC
are based upon a cost allocation system believed by the Company
to be fair and equitable to the Company's stockholders.
Allocation of these costs is generally based upon usage.  SCC and
the Company rent equipment owned by the other.  In such
circumstances the user pays the fair market rental rate.

     During 1999, SCC paid the Company approximately $140,461 for
general and administrative services and general yard and shop
services, and the Company paid SCC $337,803 for the use of
equipment.  The formulae and actual intercompany charges are
reviewed semi-annually by the Audit Committee of the Company's
Board of Directors.




<PAGE>
     The Company's liability insurance and workers compensation
policies are written to cover both the Company and SCC.  Since
these policies contain limits which are applicable to both SCC
and the Company, covered losses experienced by SCC would increase
the costs of and reduce limits of coverage available to the
Company.  SCC will pay the portion of the premiums for these
policies attributable to its operations.  In 1999, the Company's
share of the liability insurance and workers compensation
premiums was approximately $1,762,378 and SCC's share totaled
approximately $56,327.

     Premiums for the Company's general liability and workers
compensation policies are retrospectively rated, which means that
premiums for past policy years are recalculated annually in sub-
sequent years to reflect actual losses under the policies.
Recalculation can result in an increase or decrease in the
premiums within certain limits.  The Company and SCC have agreed
to share such increases and decreases pro-rata on the basis of
the respective portion of the original premiums paid.
Accordingly, losses incurred by SCC could result in increases in
the Company's insurance premiums in an amount disproportionate to
its own loss experience.

     As is customary in the industry, the Company is obligated to
indemnify its surety against losses incurred by the surety on
surety bonds written on behalf of the Company and its
subsidiaries.  The Company remains liable to the surety for any
loss on surety bonds written on behalf of SCC prior to March 1,
1989 when SCC was part of the Company.  The surety has not
suffered any losses on such surety bonds and the Company is not
aware of any basis for any claims that could give rise to such
losses.  SCC and the Principal Stockholders have agreed to
indemnify the Company against any loss the Company sustains as a
result of its indemnification of the surety on surety bonds
written on behalf of SCC.

     The Company maintains both a money-purchase pension plan and
a profit sharing plan.  SCC formerly maintained identical plans
for its employees which were merged into the Company's plans
effective as of January 1, 1989.  Persons employed by both the
Company and SCC in the same year will receive allocations to the
plans from both companies based on their compensation from each.


Other Transactions

     See "Compensation Committee Interlocks and Insider
Participation."

     In May 1988, a corporation owned primarily by the Principal
Stockholders acquired a hotel in Niagara Falls, New York.  The
Company provides bookkeeping and accounting services to the hotel
and charges the corporation an amount equal to the Company's
costs (determined on the basis of computer usage) of providing
such services.  In 1999, these costs totaled approximately
$93,159.



<PAGE>
AUDITORS

     The firm of Deloitte & Touche LLP, independent certified
public accountants, has audited the records of the Company for
the past sixteen years.  The Board of Directors wishes to
continue the services of this firm for the fiscal year ending
December 31, 2000, and the stockholders' ratification of such
appointment is requested.  If the stockholders do not ratify the
selection of Deloitte & Touche LLP by the affirmative vote of a
majority of votes cast at the Annual Meeting on this proposal,
selection of independent accountants will be reconsidered by the
Board of Directors.

     Representatives of Deloitte & Touche LLP will attend the
Annual Meeting, will have the opportunity to make a statement if
they desire to do so, and will be available to respond to
appropriate questions.

     The Board of Directors recommends a vote FOR the
ratification of the appointment of Deloitte & Touche LLP as
independent accountants to audit the accounts of the Company for
the fiscal year ending December 31, 2000.


SUBMISSION OF STOCKHOLDER PROPOSALS

     Proposals of stockholders intended to be included in the
proxy materials for the 2001 Annual Meeting of Stockholders must
be received by the Secretary, Sevenson Environmental Services,
Inc., 2749 Lockport Road, Niagara Falls, New York 14305-2229, no
later than December 18, 2000.

     In the case of a stockholder who wishes to present a
proposal for consideration at the 2001 Annual Meeting of
Stockholders without inclusion of such proposal in the Company's
proxy statement, unless notice of such proposal is received by
the Secretary of the Company no later than March 3, 2001,
management proxies would be allowed to use their discretionary
voting authority to vote on such proposal.


OTHER MATTERS

     At the time of the preparation of this Proxy Statement, the
Board of Directors of the Company did not contemplate or expect
that any business other than that pertaining to the subjects
referred to in this Proxy Statement would be brought up for
action at the meeting, but in the event that other business
calling for a stockholders' vote does properly come before the
meeting, the Proxies will vote thereon according to their best
judgment in the interest of the Company.

                         By Order of the Board of Directors,
                         SEVENSON ENVIRONMENTAL SERVICES, INC.
April 17, 2000           William J. McDermott, Secretary




<PAGE>
            PROXY FOR ANNUAL MEETING OF STOCKHOLDERS

              SEVENSON ENVIRONMENTAL SERVICES, INC.
                       2749 Lockport Road
                 Niagara Falls, New York  14302

THIS PROXY IS SOLICITED BY THE BOARD OF DIRECTORS OF THE COMPANY


     The undersigned, revoking all prior proxies, hereby appoints
Michael A. Elia and William J. McDermott, or either of them, as
proxies with full power of substitution, and hereby authorizes
them to represent and vote, as designated on the reverse, all the
shares of Common Stock of Sevenson Environmental Services, Inc.
held of record by the undersigned on April 6, 2000 at the Annual
Meeting of Stockholders to be held at the Comfort Inn, One
Prospect Point, Niagara Falls, New York, on May 23, 2000, or any
adjournment thereof.

          (Continued and to be Signed on Reverse Side)







































<PAGE>
[ X ]  Please mark
       your votes as
       in this example

          The Directors recommend a vote FOR election
          of all nominees and FOR proposal 2.


1.   Election of Class A Directors

      FOR      WITHHELD
     [   ]      [   ]  Nominees: Joseph J. Castiglia,
                                 Robert S. Kelso

     FOR except vote withheld from the following nominee:

     __________________________________


2.   Ratify the appointment of Deloitte & Touche LLP as
     independent auditors for fiscal year 2000

      FOR        AGAINST          ABSTAIN
     [   ]        [   ]            [   ]


3.   In their discretion, the proxies are authorized to vote upon
     any other matters of business which may properly come before
     the meeting, or, any adjournment(s) thereof

PLEASE MARK, DATE, SIGN AND RETURN THE PROXY CARD PROMPTLY, USING
THE ENCLOSED ENVELOPE.

     Change of Address/comments on reverse side   [   ]

     I plan to attend the meeting                 [   ]

     I do not plan to attend the meeting          [   ]



SIGNATURE(S)__________________________________   Date
____________________


NOTE:  Please sign exactly as name appears hereon.  Joint owners
should each sign.  When signing as attorney, executor,
administrator, trustee or guardian, please give full titles as
such.  If a corporation, please sign in full by President or
other authorized officer.  If a partnership, please sign in
partnership name by authorized person.








<PAGE>
            PROXY FOR ANNUAL MEETING OF STOCKHOLDERS

              SEVENSON ENVIRONMENTAL SERVICES, INC.
                       2749 Lockport Road
                 Niagara Falls, New York  14302


     The undersigned, revoking all prior proxies, hereby appoints
Michael A. Elia and William J. McDermott, or either of them, as
proxies with full power of substitution, and hereby authorizes
them to represent and vote, as designated on the reverse, all the
shares of Class B Common Stock of Sevenson Environmental
Services, Inc. held of record by the undersigned on April 6, 2000
at the Annual Meeting of Stockholders to be held at the Comfort
Inn, One Prospect Point, Niagara Falls, New York, on May 23,
2000, or any adjournment thereof.

          (Continued and to be Signed on Reverse Side)









































<PAGE>
[ X ]  Please mark
       your votes as
       in this example


THIS PROXY IS SOLICITED BY THE BOARD OF DIRECTORS OF THE COMPANY.  The
Directors recommend a vote FOR election of all nominees and FOR
proposal 2.


1.   Election of Class B Directors

      FOR      WITHHELD
     [   ]      [   ]  Nominees: Michael A. Elia, Laurence A. Elia,
                                 Richard A. Elia, William J.
                                 McDermott, Dena M. Armstrong,
                                 Arthur A. Elia

     FOR except vote withheld from the following nominee(s):

     __________________________________


2.   Ratify the appointment of Deloitte & Touche LLP as independent
     auditors for fiscal year 2000

      FOR        AGAINST          ABSTAIN
     [   ]        [   ]            [   ]


3.   In their discretion, the proxies are authorized to vote upon any
     other matters of business which may properly come before the
     meeting, or, any adjournment(s) thereof


     Change of Address/comments on reverse side   [   ]

     I plan to attend the meeting                 [   ]

     I do not plan to attend the meeting          [   ]



SIGNATURE(S)_______________________________   Date______________


NOTE:  Please sign exactly as name appears hereon.  Joint owners
should each sign.  When signing as attorney, executor, administrator,
trustee or guardian, please give full titles as such.  If a
corporation, please sign in full by President or other authorized
officer.  If a partnership, please sign in partnership name by
authorized person.







<PAGE>


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