EXHIBIT 5.1 & 23.2

July 30, 2013

Ecology and Environment, Inc.

368 Pleasant View Drive

Lancaster, New York 14086

Gentlemen:

We have acted as counsel to Ecology and Environment, Inc. (the “Company”), in connection with the preparation of the Registration Statement on Form S-8 to be filed by the Company with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the “Securities Act”), on or about the date hereof (the “Registration Statement”) relating to the registration of an aggregate of 200,000 shares of the Company’s Common Stock, $.01 par value per share (the “Shares”), reserved for issuance from time to time under the Ecology and Environment, Inc. 2011 Stock Award Plan (the “Plan”).

In so acting, we have examined originals, or copies certified or otherwise identified to our satisfaction, of (a) the Certificate of Incorporation, as amended, and By-Laws of the Company as currently in effect, (b) the Registration Statement, (c) the Plan, (d) certain resolutions adopted by the Board of Directors of the Company, and (e) such other documents, records, certificates and other instruments of the Company as in our judgment are necessary or appropriate for purposes of this opinion.

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Based on the foregoing, it is our opinion that the Shares will be, when issued and sold in the manner referred to in the Plan, legally issued, fully paid and non-assessable.

We hereby consent to the filing of this opinion as Exhibit 5.1 to the Registration Statement. In giving such consent, we do not hereby admit that we come within the category of persons whose consent is required under Section 7 of the Securities Act, or the rules or regulations of the Securities and Exchange Commission promulgated thereunder.

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