Beta Sigma Phi, Alpha Alpha Chapter Non-Profit Organizations Beta Sigma Phi, Alpha Alpha Chapter Request Info Bethany Beach, DE 19930 (302) 569-1332 About Map About The Alpha Alpha Chapter is comprised of 25+ women who volunteer their time to identify opportunities to help the community either through service projects or raising funds. Meetings are once a month. What's Nearby? Distance: 5 10 15 20 25 50 mi.