The national gallery of art, andrew w mellon memorial fountain- pennsylvania & constitution avenues & 6th st nw. Mellow fountain restoration. Disassemble-remove fountain & surrounding plaza stones, remove-reinstall waterproofing membrane beneath, re-install fountain & stone- relocate ada ramp between sidewalk & fountain from west to east side of site- add one hand rail each at north and south stairs - upgrade fountain bowl light fixtures as per plans. Uscfa approved letter & documents. 6th st & constitution ave nw 20565. The purpose of this application-building permit is to obtain doee approval for the excavation been proposed for the mellon fountain restoration.