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Soil Investigations for Data Collection in the Delta Initial Study/Proposed Mitigated Negative Declaration xv vi. species sensitivity and response to disturbance, vii. species fecundity, and viii. the probability of population recovery from impacts. If loss of individuals due to project activities would exceed 2% of the local population or if the particular life history of the plant species indicates that a loss of that scale would threaten the persistence of the local population, or if there are fewer than 10 statewide extant occurrences, the soil investigation will not be allowed to proceed at that location. MM BIO-19: Botanical Considerations for Vegetation Removal If access requires minor disturbances to or removal of vegetation, a qualified botanist will be consulted to ensure that no special-status vegetation is significantly impacted. MM BIO-20: Botanical Avoidance Zones Soil investigation activities will not be conducted within the intertidal zone of rivers or sloughs, including in-channel islands, or shoals to the extent feasible. If work in these areas is necessary, the Impact Area will be surveyed by a qualified botanist during tidal conditions that expose the intertidal area where Delta mudwort or Mason’s lilaeopsis would occur. If Delta mudwort or Mason’s lilaeopsis are identified, they will be flagged or mapped with a GPS for avoidance. MM CUL-1: a. All soil investigation locations would be reviewed by a qualified archaeologist to evaluate the potential for impacts, if any, to cultural resources. b. Locations that have no previous survey coverage must be surveyed by, or under the direct supervision of a qualified archaeologist prior to the start of any ground disturbing activities. c. If the archaeologist observes cultural or potential tribal cultural resources within the Impact Area or associated resource buffer as identified by a qualified archaeologist, the location will be shifted the minimum distance necessary to reduce the potential for significant cultural resource impacts without significantly increasing potential impacts to other resources. d. A tribal representative from the consulting tribes will be invited to participate in the pre-activity field visits and archaeological surveys in Impact Areas specified as an area of interest/concern during consultation by that consulting tribe/tribes. e. Consulting tribes will be informed of any potential tribal cultural resources located within the study area specified as an area of interest/concern by a consulting tribe/tribes.