Long, Tann & D'Onofrio, Inc.

3906 Concord Pike, Suite F, Wilmington, DE 19803

Tel: (302) 477-1970

Fax: (302) 477-1985

General Inquiries:

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Pete D’Onofrio P.E.

Owner / President

200 Three Tun Road, Malvern, PA 19355

302-477-1970 ext. 302

John O. Grieshaber P.E., SECB, F. SEI, F.ASCE


302-477-1970 ext. 303

John F. Rzasa, Jr. P.E.


302-477-1970 ext.305

Administration / Accounts Receivable

302-477-1970 ext. 301

For all other inquiries, please contact us via email or send us a fax at: 302-477-1985

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We would greatly appreciate the opportunity to discuss your project and how we can help you.

All information entered will be used solely for quoting a project and will not be sold to any third parties.