AM. removed Locus 14 (prefloor deposits)(sampled) from AC3, exposing the paved floor. Cleaned in AC1 and removed the southern section of Locus 21 (sampled). took pollen samples also from these sediments. Moved to AC2, measured and removed locus 17 (gray-brown soil with some burnt loci, mostly remnants of Locus 15 (soil samples and charcoal yesterday). Uncovered a widespread black-stained soil feature in this region (all between the standing/fallen ashlars), with widespread burnt features (this is locus 18). Locus 18 is the last lens of sodden deposits lying on a level of tuff pavers, which have crevices between them similar to the pavers lining the troughs.