2165.91 feet and whose chord and chord bearing are 152.44 feet and N. 00 deg. 02' 43" E. respectively for an arc distance of 152.47 feet to a point of tangency having coordinates N. 429,452.13 and E. 2,403,056.60; thence N. 01 deg. 58' 17" W., 141.63 feet to a point of curvature having coordinates N. 429,593.68 and E. 2,403,051.73; thence following the arc of a curve to the right whose radius is 4560.67 feet and whose chord and chord bearing are 224.93 feet and N. 00 deg. 33' 30" W. respectively for an arc distance of 224.95 feet to a point on the existing Alexandria-Arlington Boundary, said point having coordinates N. 429,818.60 and E. 2,403,049.54; thence running along said existing boundary N. 14 deg. 40' 33" W., 307.96 feet to an existing boundary corner with coordinates N. 430,116.51 and E. 2,402,971.52; thence running N. 09 deg. 54' 36" W., 1447.14 feet to another existing corner having coordinates N. 431,542.06 and E. 2,402,722.47; thence continuing with said existing Alexandria-Arlington Boundary N. 01 deg. 20' 15" E., 271.24 feet to a corner with coordinates N. 431,813.23 and E. 402,728.80, said point being in the vicinity of the Washington and Old Dominion Railroad right of way; thence running S. 78 deg. 26' 13" E. 1858.44 feet to an existing boundary corner having coordinates N. 431,440.71 and E. 2,404,549.52; thence continuing with an extension of the last mentioned course 5.73 feet (1864.17 feet in all) to a point whose coordinates are N. 431,439.56 and E. 2,404,555.13; said point lying in Four Mile Run; thence turning and running with the proposed centerline of Four Mile Run N. 20 deg. 30' 55" E., 62.07 feet to a point of curvature whose coordinates are N. 431,497.69 and E. 2,404,576.88; thence following the arc of a curve to the right whose radius is 420.44 feet and whose chord and chord bearing are 361.79 feet and N. 45 deg. 59' 55" E. respectively, for an arc distance of 374.00 feet to a point of compound curvature having coordinates N. 431,749.02 and E. 2,404,837.12; thence running along the arc of a curve to the right whose radius is 388.90 feet and whose chord and chord bearing are 241.48 feet and N. 89 deg. 34' 10" E. respectively for an arc distance of 245.54 feet to a point of tangency whose coordinates are N. 431,750.83 and E. 2,405,078.59 thence continuing along said proposed center and thence with the existing centerline of Four Mile Run S. 72 deg. 20' 35" E. 115.13 feet to a point of curvature whose coordinates are N. 431,715.91 and E. 2,405,188.30; thence following the arc of a curve to the left whose radius is 805.00 feet and whose chord and chord bearing are 218.56 feet and S. 80 deg. 08' 42.5" E. respectively for an arc distance of 219.24 feet to a point of tangency whose coordinates are N. 431,678.50 and E. 2,405,403.64; thence running S.