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The purpose of this program is to monitor charge traps in the ACS-WFC CCDs at the lowest charge level and update the pixel-based CTE model parameters as needed. As shown in ACS ISR 2018-04 comma the number of traps affecting small to medium-size charge packets can be inferred from the shape of warm pixel trails in short darks with a range of background (post-flash) levels. A new comma more direct approach to pinning the CTE model has been developed to compare these data to scaled long (1000s) darks from the Daily Monitor program. By examining the survival of WPs as a function of row number and post-flash level comma we can develop a direct model for CTE losses.