Carbonized maize stem/stalk fragments where recovered from Unit VIII and XI in Pits 2J and 2X and maize charcoal was directly dated by Bloom et al. (1983:418) from Unit XI, Pit 2J. According to Bloom et al. (1983:418) this evidence demonstrates that the Maya were active cultivators on this floodplain by the Middle Pre-Classic period. Bloom et al. (1983:418) state that when considering the carbon isotope fractionation of the maize, this date could be pushed back 200 yrs.