NCEES is one of the well recognized organization for crediential evaluation.  You can send a notorized copy of diploma from here but your transcript must be sent directly from the university you graduated. Since it is not easy to get another copy of transcript from TU, what I did is I scaned my transcript and sent it to my friend in Nepal. He prined it, got notorized from TU, sealed it in TU envelope and posted directly to the NCEES and that worked. Don't forget to send transcript request form (you will get it from NCEES once you pay the fee which is $400.0) and ask to enclose it in the mail. However, according to their evaluation I have 11 credits deficit on General Education category. Some states don't care about that if you have completed required hours in engineering courses but some do. You can find out your state's requirements. By the way, you must have gone through the same process for your EIT certification as well.

Here is the link for NCEES

http://www.ncees.org/