Distributions of diagnostic projectile points present the strongest surface evidence of Early, Middle, and Late Archaic activities at the Chivay source, and therefore inference about this period is strongly influenced by the production and discard of Series 1-4 point types in prehistory. Many of the obsidian projectiles found in the Block 1 survey and the Block 4 and 5 reconnaissance area had incomplete scar coverage, which is consistent with the reduction pattern one would expect near the source. The preferential use of Ob1 over Ob2 obsidian is evident from the core discard and the tendency to use Ob1 for projectile point production. The presence of Chivay obsidian at consumption sites, both locally and regionally, during the Early Archaic suggest that the source area was accessible during this time, there is no evidence of the use of the Maymeja area until the Middle Archaic.