Base line on the southeasterly side of Old Riverbed begins at a stone monument in the center line of Main Ave. N.W. and Elm St. N.W. and extends to a stone monument at the intersection of Elm St. N.W. and Division Ave. N.W.; thence deflecting to the left 89 degrees 48 minutes 30 seconds two thousand and six and forty-four one-hundredths (2006.44) feet to a stone monument at the angle in Division Ave. N.W.; thence deflecting to the right 41 degrees 49 minutes 30 seconds a distance of nine hundred and fourteen and twenty-two one-hundredths (914.22) feet to a stone monument; thence deflecting to the right 30 degrees 2 minutes a distance of two hundred and eighty and eighty-four one-hundredths (280.84) feet to a stone monument; thence deflecting to the right 45 degrees 24 minutes 30 seconds a distance of ninety-one and thirty- six one-hundredths (91.36) feet to a stone monument; thence deflecting to the left 39 degrees 28 minutes 50 seconds a distance of two hundred and sixteen one- hundredths (200.16) feet to a stone monument; thence deflecting to the left 4 degrees 16 minutes a distance of one thousand six hundred and eighty-seven (1687) feet to a stone monument which is at the center of old River Ave. N.W. and 54th St. N.W.