Exhibit 3.25

BY-LAWS

FUGRO U. S., INC.

A California Corporation

Article I

OFFICES

Section 1. PRINCIPAL OFFICE. The principal office for the transaction of business of the corporation is hereby fixed and located in the City of Long Beach, County of Los Angeles, State of California.

The Board of Directors is hereby granted full power and authority to change said principal office from one location to another in said county.

Section 2. OTHER OFFICES. Branch or subordinate offices may at any time be established by the Board of Directors at any place or places where the corporation is qualified to do business.

Article II

MEETINGS OF SHAREHOLDERS

Section 1. PLACE OF MEETINGS. All annual meetings of shareholders shall be held at the principal office of the corporation, and all other meetings of shareholders shall be held either at the principal office or at any other place within or without the State of California which may be designated either by the Board of Directors pursuant to authority hereinafter granted to said Board, or by written consent of all shareholders entitled to vote thereat, given either before or after the meeting and filed with the Secretary of the corporation.

Section 2. ANNUAL MEETINGS. The annual meetings of shareholders shall be held on the tenth day of February, of each year, at 10 o’clock A.M.; provided, however, that should said day fall upon a legal holiday, then such annual meeting of shareholders shall beheld at the same time and place on the next day thereafter ensuing which is not a legal holiday.

Written notice of each annual meeting shall be given to each shareholder entitled to vote thereat, either personally or by mail or other means of written communication, charges prepaid, addressed to such shareholder at his or her address appearing on the books of the corporation or given by him or her to the corporation for the purpose of notice. If a shareholder gives no address, notice shall be deemed to have been given him if sent by mail or other means of written communication addressed to the place where the principal office of the corporation is situated, or if published at least once in some newspaper of general circulation in the county in which said office is located. All such notices shall be sent to such shareholder entitled thereto, not less than ten (10) days before such annual meeting, and shall specify the place, day and hour of such meeting, and shall also state the general nature of the business or proposal to be considered or acted upon at such meeting before action may be taken at such meeting on:

a. A proposal to sell, lease, convey, exchange, transfer or otherwise dispose of all or substantially all of the property or assets of the corporation except under Section 3900 of the California Corporations Code;

b. A proposal to merge or consolidate with another corporation, domestic or foreign;

c. A proposal to reduce the stated capital of the corporation;

d. A proposal to amend the Articles of Incorporation;

e. A proposal to wind up and dissolve the corporation;

f. A proposal to adopt a plan of distribution of shares, securities or any consideration other than money in the process of winding up.

Section 3. SPECIAL MEETINGS. Special meetings of the shareholders, for any purpose or purposes whatsoever may be called at any time by the President or by the Board of Directors, or by one or more shareholders holding not less than one-fifth of the voting power of the corporation. Except in special cases where other express provision is made by statute, notice of such special meetings shall be given in the same manner as for annual meetings of shareholders. Notices of any special meeting shall specify, in addition to the place, day and hour of such meeting, the general nature of the business to be transacted.

Section 4. ADJOURNED MEETINGS AND NOTICE THEREOF. Any shareholders’ meeting, annual or special, whether or not a quorum is present, may be adjourned from time to time by vote of a majority of the shares, the holders of which are either present in person or by proxy thereat, but in the absence of a quorum, no other business may be transacted at any such meeting.

When any shareholders’ meeting, either annual or special, is adjourned for thirty days or more, notice of the adjourned meeting shall be given as in the case of an original meeting. Except as aforesaid, it shall not be necessary to give any notice of an adjournment or of the business to be transacted at an adjourned meeting, other than by announcement at the meeting at which such adjournment is taken.

Section 5. ENTRY OF NOTICE. Whenever any shareholder entitled to vote has been absent from any meeting of shareholders, whether annual or special, an entry in the minutes to the effect that notice has been duly given shall be sufficient evidence that due notice of such meeting was given to such shareholder, as required by law and the By-Laws of the corporation.

Section 6. VOTING. At all meetings of shareholders, every shareholder entitled to vote shall have the right to vote in person or by proxy the number of shares standing in his name on the stock records of the corporation. Such vote may be given by viva voce or by ballot; provided, however, that all elections for directors must be by ballot upon demand made by a shareholder at any election and before the voting begins. At all elections of directors of the corporation, each shareholder entitled to vote shall have the right to cast as many votes as shall equal the number of his shares multiplied by the number of directors to be elected, and he may cast all of such votes for a single candidate or may distribute them among some or all of the candidates as he sees fit. The candidates receiving the highest number of votes up to the number of directors to be elected shall be elected.

Section 7. QUORUM. The presence in person or by proxy of the holders of a majority of the shares entitled to vote at any meeting shall constitute a quorum for the transaction of business. The shareholders present at a duly called or held meeting at which a quorum is present may continue to do business until adjournment, notwithstanding the withdrawal of enough shareholders to leave less than a quorum.

Section 8. CONSENT OF ABSENTEES. The proceedings and transactions of any meeting of shareholders, either annual or special, however called and noticed, shall be as valid as though had at a meeting duly held after regular call and notice, if a quorum be present either in person or by proxy, and if, either before or after the meeting, each of the shareholders entitled to vote, not present in person or by proxy, signs a written waiver of notice, or a consent to the holding of such meeting, or an approval of the minutes thereof. All such waivers, consents or approvals shall be filed with the corporate records or made a part of the minutes of the meeting.

Section 9. ACTION WITHOUT MEETING. Any action, which under the provisions of Section 2239 of the California Corporations Code may be taken at a meeting of the shareholders, may be taken without a meeting if authorized by a writing signed by all of the holders of shares who would be entitled to vote at a meeting for such purpose, and filed with the Secretary of the corporation.

Section 10. PROXIES. Every person entitled to vote or execute consents shall have the right to do so either in person or by an agent or agents authorized by a written proxy executed by such person or his duly authorized agent and filed with the Secretary of the corporation; provided, that no such proxy shall be valid after the expiration of eleven (11) months from the date of its execution, unless the shareholder executing it specifies therein the length of time for which such proxy is to continue in force, which in no case shall exceed seven (7) years from the date of its execution.

Article III

DIRECTORS

Section 1. POWERS. Subject to limitations of the Articles of Incorporation, of the By-Laws, and particularly Article II, Section 6 of these By-Laws, and of the California General Corporation Law, as to action to be authorized or approved by the shareholders, and subject to the duties of directors as prescribed by the By-Laws, all corporate power shall be exercised by or under the authority of, and the business and affairs of the corporation shall be controlled by, the Board of Directors. Without prejudice to such general powers, but subject to the same limitations, it is hereby expressly declared that the directors shall have the following powers, to wit:

a. To select and remove all other officers, agents and employees of the corporation, prescribe

such powers and duties for them as may not be inconsistent with law, with the Articles of Incorporation or the By-Laws, fix their compensation, and require from them security for faithful service;

b. To conduct, manage and control the affairs and business of the corporation, and to make such rules and regulations therefor not inconsistent with law, the Articles of Incorporation or the By-Laws, as they may deem best;

c. To change the principal office for the transaction of the business of the corporation from one location to another within the same county as provided in Article I, Section 1, hereof; to fix and locate from time to time, one or more branch or subsidiary offices of the corporation within or without the State of California, as provided in Article I, Section 2 hereof; to designate any place within or without the State of California for the holding of any shareholders’ meetings except annual meetings; and to adopt, make, and use a corporate seal, and to prescribe the form of certificates of stock, and to alter the form of such seal and of such stock certificates from time to time, as in their judgment they may deem best, provided, such seal and such certificates shall at all times comply with the provisions of the law;

d. To authorize the issue of stock of the corporation from time to time, upon such terms as may be lawful, in consideration of money paid, labor done or services actually rendered, debts or securities cancelled, or tangible or intangible property actually received, or in case of shares issued as a dividend, against amounts transferred from surplus to stated capital;

e. To borrow money and incur indebtedness for the purposes of the corporation and to cause to be executed and delivered therefor, in the corporate name, promissory notes, bonds, debentures, deeds of trust, mortgages, pledges, hypothecations or other evidences of debt and securities therefor; and

f. To appoint an executive committee and other committees, and to delegate to the executive committee any of the powers and authority of the Board in the management of the business and affairs of the corporation, except the power to declare dividends and to adopt, amend or repeal by-laws. The executive committee shall be composed of two or more directors.

Section 2. NUMBER AND QUALIFICATIONS OF DIRECTORS. The authorized number of directors of the corporation shall be FIVE (5) until changed by amendment of the Articles of

Incorporation or by a by-law amending this Article III, Section 2 of these By-Laws duly adopted by the vote or written assents of the shareholders.

Section 3. ELECTION AND TERM OF OFFICE. The directors shall be elected at each annual meeting of the shareholders, but if any such annual meeting is not held, or the directors are not elected thereat, the directors may be elected at any special meeting of the shareholders held for that purpose. Each director shall hold office until his respective successor is elected or until he is removed from office.

Section 4. VACANCIES. Vacancies in the Board of Directors may be filled by a majority of the remaining directors, though less than a quorum, or by a sole remaining director, and each director so elected shall hold office until his successor is elected at an annual or special meeting of the shareholders.

A vacancy or vacancies in the Board of Directors shall be deemed to exist in case of the death, resignation or removal of any director, or if the authorized number of directors be increased, or if the shareholders fail at any annual or special meeting of shareholders at which any director or directors are elected, to elect the full authorized number of directors to be voted for at that meeting.

The shareholders may elect a director or directors at any time to fill any vacancy or vacancies not filled by the directors. If the Board of Directors accept the resignation of a director tendered to take effect at a future time, the Board or the shareholders shall have power to elect a successor to take office when the resignation is to become effective.

No reduction of the authorized number of directors shall have the effect of removing any director prior to the expiration of his term of office.

Section 5. PLACE OF MEETING. Regular meetings of the Board of Directors shall be held at any place within or without the State which has been designated from time to time by resolution of the Board or by written consent of all members of the Board. In the absence of such designation, regular meetings shall be held at the principal office of the corporation. Special meetings of the Board may be held either at a place so designated or at the principal office.

Section 6. ORGANIZATION MEETING. Immediately following each annual meeting of shareholders, the Board of

Directors shall hold a regular meeting for the purpose of organization, election of officers, and the transaction of other business. Notice of such meetings is hereby dispensed with.

Section 7. SPECIAL MEETINGS. Special meetings of the Board of Directors for any purpose or purposes shall be called at any time by the President, or, if he is absent or unable or refuses to act, by any Vice-President, or, if he is absent or unable or refuses to act, by any director.

Written notice of the time and place of special meetings shall be delivered personally to the directors or sent to each director by mail or other form of written communication, charges prepaid, addressed to him at his address as it is shown upon the records of the corporation, or if it is not shown on such records or is not readily ascertainable, at the place in which the meetings of the directors are regularly held. In case such notice is mailed or telegraphed, it shall be deposited in the U. S. mail or delivered to the telegraph company in the place in which the principal office of the corporation is located at least forty-eight (48) hours prior to the time of the holding of the meeting. In case such notice is delivered personally as above provided, it shall be so delivered at least twenty-four (24) hours prior to the time of the holding of the meeting. Such mailing, telegraphing, or delivery as above provided, shall be due, timely, legal, and personal notice to such director.

Section 8. NOTICE OF ADJOURNMENT. Notice of the time and place of holding an adjourned meeting need not be given to absent directors if the time and place be fixed at the meeting adjourned.

Section 9. ENTRY OF NOTICE. Whenever any director has been absent from any special meeting of the Board of Directors, an entry in the minutes to the effect that notice has been duly given shall be sufficient evidence that due notice of such special meeting was given to such director, as required by law and the By-Laws of the corporation.

Section 10. WAIVER OF NOTICE. The transactions of any meeting of the Board of Directors, however called and noticed or wherever held, shall be as valid as though had at a meeting duly held after regular call and notice, if a quorum be present, and if, either before or after the meeting, each of the directors not present signs a written waiver of notice or a consent to holding such meeting or an approval of the minutes thereof. All such waivers, consents, or approvals shall be filed with the corporate records or made

a part of the minutes of the meeting.

Section 11. QUORUM. A majority of the authorized number of directors shall be necessary to constitute a quorum for the transaction of business, except to adjourn as hereinafter provided. Every act or decision done or made at a meeting by a majority of all authorized directors, which meeting is duly held and at which a quorum is present, shall be regarded as the act of the Board of Directors, unless a greater number be required by law, the Articles of Incorporation, or the By-Laws.

Section 12. ADJOURNMENT. A quorum of the directors may adjourn any directors’ meeting to meet again at a stated time, place and hour, provided however, that in the absence of a quorum, the directors present at any directors’ meeting, either regular or special, may adjourn from time to time, until the time fixed for the next regular meeting of the Board.

Section 13. ACTION WITHOUT MEETING. Any action required or permitted to be taken by the Board of Directors may be taken without a meeting if all members of the Board shall individually or collectively consent in writing to such action. Such written consent or consents shall be filed with the minutes of the proceedings of the Board. Such action by written consent shall have the same force and effect as a unanimous vote of such directors. Any certificate or other document which relates to action so taken shall state that the action was taken by unanimous written consent of the Board of Directors without a meeting and that the By-Laws authorize the Directors to so act.

Section 14. FEES AND COMPENSATION. Directors shall not receive any stated salary for their services as directors, but, by resolution of the Board, a fixed fee, with or without expenses of attending, may be allowed for attendance at each meeting. Nothing herein contained shall be construed to preclude any director from serving the corporation in any other capacity as an officer, agent, employee, or otherwise, and receiving compensation therefor.

Article IV

OFFICERS

Section 1. OFFICERS. The officers of the corporation shall be:

a. President,

b. Vice-President,

c. Secretary, and

d. Treasurer.

The corporation may also have, at the discretion of the Board of Directors, a Chairman of the Board, one or more additional vice-presidents, one or more assistant-secretaries, one or more assistant-treasurers, and such other officers as may be appointed in accordance with the provisions of Section 3 of this Article. Officers other than the President and Chairman of the Board, need not be directors. One person may hold two or more offices, except those of President and Secretary.

Section 2. ELECTIONS. The officers of the corporation, except such officers as may be appointed in accordance with the provisions of Sections 3 or 5 of this Article, shall be chosen annually by the Board of Directors, and each shall hold his office until his successor is appointed or until he resigns or is removed from office.

Section 3. SUBORDINATE OFFICERS, ETC. The Board of Directors may appoint such other officers as the business of the corporation may require, each of whom shall hold office for such period, have such authority and perform such duties as are provided in the By-Laws or as the Board of Directors may from time to time determine.

Section 4. REMOVAL AND RESIGNATION. Any officer may be removed, either with or without cause, by a majority of the directors at the time in office, at a regular or special meeting of the Board, or, except in case of an officer chosen by the Board of Directors, by any officer upon whom such power of removal may be conferred by the Board of Directors.

Any officer may resign at any time by giving written notice to the Board of Directors or to the President, or to the Secretary of the corporation. Any such resignation shall take effect at the date of the receipt of such notice or at any later time specified therein; and unless otherwise specified therein, the acceptance of such resignation shall not be necessary to make it effective.

Section 5. VACANCIES. A vacancy in any office because of death, resignation, removal or any other cause shall be filled by the Board of Directors at a regular or special meeting.

Section 6. CHAIRMAN OF THE BOARD. The Chairman of the Board, if there shall be such an officer, shall, if present, preside at all meetings of the Board of Directors, and exercise and perform such other powers and duties as may from time to time be assigned to him by the Board of Directors as prescribed by the By-Laws.

Section 7. PRESIDENT. Subject to such supervisory powers, if any, as may be given by the Board of Directors to the Chairman of the Board, if there be such an officer, the President shall be the chief executive officer of the corporation and shall, subject to the control of the Board of Directors, have general supervision, direction, and control of the business and affairs of the corporation. He shall preside at all meetings of the shareholders, and in the absence of the Chairman of the Board, or if there be none, at all meetings of the Board of Directors. He shall be ex-officio a member of all the standing committees, including the executive committee, if any; shall have the general powers and duties of management usually vested in the office of president of a corporation; and shall have such other powers and duties as may be prescribed by the Board of Directors or the By-Laws.

Section 8. VICE-PRESIDENT. In the absence or disability of the President, the Vice-Presidents in order of their rank as fixed by the Board of Directors, or if not ranked, the Vice-President designated by the Board of Directors, shall perform all the duties of the President, and when so acting shall have all the powers of, and be subject to all the restrictions upon, the President. The Vice-Presidents shall have such other powers and perform such other duties as from time to time may be prescribed for them respectively by the Board of Directors or the By-Laws.

Section 9. SECRETARY. The Secretary shall keep, or cause to be kept, a book of minutes at the principal office or such other place as the Board of Directors may order, of all meetings of directors and shareholders, with the time and place of holding, whether regular or special, and if special how authorized, the notice thereof given, the names of those directors and shareholders present, the names of those present at the directors’ meeting, the number of shares present or represented at shareholders’ meetings and the proceedings thereof.

The Secretary shall keep, or cause to be kept, at the principal office or at the office of the corporation’s transfer agent, a share register, or a duplicate share register, showing the names of the shareholders and their addresses; the number and classes of shares held by each; the number and date of certificates issued for the same; the

number and date of cancellation of every certificate surrendered for cancellation.

The Secretary shall give or cause to be given, notice of all meetings of shareholders and the Board of Directors, as required by the By-Laws or by law to be given, and he shall keep the seal of the corporation in safe custody, and shall have such other powers and perform such other duties as may be prescribed by the Board of Directors or the By-Laws.

Section 10. TREASURER. The Treasurer shall keep and maintain, or cause to be kept and maintained, adequate and correct accounts of the properties and business transactions of the corporation, including accounts of its assets, liabilities, receipts, disbursements, gains, losses, capital, surplus, and shares. Any surplus, including earned surplus, paid-in surplus, and surplus arising from a reduction of stated capital, shall be classified according to source and shown in a separate account. The books of account shall at all times be open for inspection by any director.

The Treasurer shall deposit all monies and other valuables in the name and to the credit of the corporation with such depositories as may be designated by the Board of Directors. He shall disburse the funds of the corporation as may be ordered by the Board of Directors and shall render to the President and directors, when they request it, an account of all of his transactions as Treasurer and of the financial condition of the corporation, and shall have such other powers and perform such other duties as may be prescribed by the Board of Directors or the By-Laws.

Article V

MISCELLANEOUS

Section 1. RECORD DATE AND CLOSING STOCK BOOKS. The Board of Directors may fix a time in the future as a record date for the determination of the shareholders entitled to notice of and to vote at any meeting of shareholders, or to receive any dividend, distribution, or allotment of rights, or to exercise rights in respect to any change, conversion, or exchange of shares. The record date so fixed shall not be more than fifty days prior to the date of the meeting or event for which it is fixed. When a record date is so fixed, only shareholders of record on the record date shall be entitled to notice of and to vote at such meeting, or to receive such dividend, distribution, or allotment of rights, or to exercise sugh rights, as the case may be, notwithstanding any transfer of any shares on the books of the corporation after the record date. The Board of Directors may close the books of the corporation against transfers of shares during the whole or any part of the fity-day period preceding such meeting or event.

Section 2. INSPECTION OF CORPORATE RECORDS. The share register or duplicate share register, the books of account, and minutes of proceedings of the shareholders and directors shall be open to inspection upon the written demand of any shareholder or the holder of a voting trust certificate, at any reasonable time, and for a purpose reasonably related to his interests as a shareholder, and shall be exhibited at any time when required by the demand of ten percent of the shares represented at any shareholders’ meeting. Such inspection may be made in person or by an agent or attorney, and shall include the right to make extracts. Demand of inspection other than at a shareholders’ meeting shall be made in writing upon the President, Secretary or Assistant-Secretary of the corporation.

Section 3. CHECKS, DRAFTS, ETC. All checks, drafts or other orders for payment of money, notes or other evidences of indebtedness issued in the name of or payable to the corporation, shall be signed or endorsed by such person or persons and in such manner as, from time to time, shall be determined by resolution of the Board of Directors.

Section 4. SEAL. The corporation shall have a common seal, and shall have inscribed thereon the name of the corporation, the date of its incorporation, and the word California.

Section 5. ANNUAL REPORT. The Board of Directors shall cause an annual report complying with the provisions of Section 3007 et seq. of the California Corporations Code to be sent to the shareholders not later than 120 days after the close of the fiscal or calendar year.

Section 6. CONTRACTS, ETC., HOW EXECUTED. The Board of Directors, except as the By-Laws or Articles of Incorporation otherwise provide, may authorize any officer or officers, agent or agents, to enter into any contract or execute any instrument in the name of and on behalf of the corporation, and such authority may be general or confined to specific instances; and unless so authorized by the Board of Directors, no officer, agent, or employee shall have any power or authority to bind the corporation by any contract or agreement or to pledge its credit to render it liable for any purpose or to any amount.

Section 7. CERTIFICATES OF STOCK. A certificate or certificates for shares of the capital stock of the corporation shall be issued to each shareholder when any such shares are fully paid. All such certificates shall be signed by the President or a Vice-President and the Secretary or an

Assistant-Secretary, or be authenticated by facsimiles of the signatures of the President and Secretary, or a facsimile of the signature of the President and the written signature of the Secretary or Assistant-Secretary. Every certificate authenticated by a facsimile of a signature must be counter-signed by a transfer agent or a transfer clerk, and be registered by an incorporated bank or trust company, either domestic or foreign, as registrar of transfers, before issuance.

Certificates for shares may be issued prior to full payment thereof, under such restrictions and for such purposes as the Board of Directors or the By-Laws may provide; provided, however, that any such certificates so issued prior to full payment shall state the amount remaining unpaid and the terms of payment thereof.

Section 8. REPRESENTATION OF SHARES OF OTHER CORPORATIONS. The President or any Vice-President and the Secretary or Assistant-Secretary of this corporation are authorized to vote, represent, and exercise on behalf of this corporation all rights incident to any and all shares of any other corporation or corporations standing in the name of this corporation. The authority herein granted to said officers to vote or represent on behalf of this corporation any and all shares held by this corporation in any other corporation or corporations, may be exercised either by such officers in person or by any person authorized so to do by proxy or power of attorney duly executed by said officers.

Section 9. INSPECTION OF BY-LAWS. The corporation shall keep in its principal office for the transaction of business the original or a copy of the By-Laws as amended or otherwise altered to date, certified by the Secretary, which shall be open to inspection by the shareholders at all reasonable times during business hours.

Article VI

AMENDMENTS

Section 1. POWER OF SHAREHOLDERS. New by-laws may be adopted or these By-Laws may be amended or repealed by the vote of shareholders entitled to exercise a majority of the voting power of the corporation or by the written assent of such shareholders.

Section 2. POWER OF DIRECTORS. Subject to the right of shareholders as provided in Section 1 of this Article VI to adopt, amend, or repeal by-laws, by-laws other than a by-law or amendment thereof changing the authorized number of directors may be adopted, amended, or repealed by the Board of Directors.

CERTIFICATE OF SECRETARY

I, the undersigned, do hereby certify:

That I am the duly elected and acting Secretary of Fugro U.S., Inc., a California corporation; and

That the foregoing By-Laws, comprising thirteen pages, constitute the By-Laws of said corporation as duly adopted at a meeting of the Board of Directors thereof duly held on the 8th day of October , 1970 .

IN WITNESS WHEREOF, I have hereunto subscribed my name and affixed the seal of said corporation this 2nd day of November ,1970 .

	/s/ Jay L. Smith
	Jay L. Smith, Secretary

(SEAL)