05-29-2003 Bayport Expansion Review Committee Meeting

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e Port of Houston Authority "0. 21520(Revised) Galveston Bay, along the Bayport Ship Channel, City of Pasadena, Harris County, Texas. Attachment 1, Sheet310fYl-.(Revised May 2003) . Port of Houston Authority Wetland Mitigation Plan Performance Standards a. Planted vegetation must exhibit at least 50% survival at the first post-construction monitoring event (45 days post-planting). b. Cover of desirable vegetation in the flooded zones and non-planted areas within the wetland footprint equal to or exceeding 70% by the end of Phase I (3 years). c. Cover of desirable vegetation in the planting zones and non-planted areas within the wetland footprint equal to or exceeding 70% throughout Phase II (2 years). Corrective Actions a. If 50% survival of planted vegetation is not exhibited during the first post-construction monitoring event, replanting will be required at the original density in areas where 50% survival is not exhibited. Replanting will occur as soon as it is biologically and logistically feasible, but no later than the beginning of the next growing season. b. If the percent cover of desired species does not meet or exceed 70% at the end of Phase I (3 years), The PHA will be required to evaluate the cause of the unacceptable growth and recommend an appropriate response. Appropriate responses could include modifications to site hydrology, replanting, introduction of . different species, or no action. c. If the percent cover of desired species does not meet or exceed 70% throughout Phase II (2 years), The PHA will be required to evaluate the cause of the unacceptable growth and recommend an appropriate response. Control of Undesirable Vegetation Some of the of the vegetation that will grow voluntarily in the planting zones will be considered undesirable vegetation. Undesirable species are typically exotic species or invasive native species that provide poor habitat and forage, or impede the establishment and maintenance of desirable species. Some undesirable species will cause little harm and may be tolerated. Other species will adversely impact weUand development and will not be tolerated. Performance Standards 8. Vegetative cover of undesirable species shall not exceed 10% within the weUand or enhanced upland habitats during Phase I, or until planted and other desirable species have become well established. While it may be impractical or impossible to . Benchmark Ecological Services, Inc. May 2003