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Mr. Lorenzo Wingate City of La Porte August 31, 2021 Page 4 The Phase I ESAs will be conducted in accordance with ASTM E1527-13 Standard Practices. b) Wetland Delineation and Jurisdictional Determination o Perform on-the-ground delineation within the full Project limits at both potential locations to identify the limits of WOTUS, including wetlands, as defined in the United States Army Corps of Engineers (USACE) ÐWetland Delineation Manual, Technical report Y-87-1Ñ and the ÐRegional Supplement to the Corps of Engineers Wetland Delineation Manual: Atlantic and Gulf Coastal Plain Region (Version 2.0).Ñ o Employ GPS surveying techniques per USACE Galveston District operating procedures to delineate the limits of potential WOTUS and/or wetlands. o Complete necessary wetland data forms and take on-site photography for representative site features. o Prepare draft and final reports describing the methodology and results of the investigation, so that the report may satisfy the jurisdictional determination requirement for any future permits. Geographic Information System (GIS) shapefiles of the field data collected shall be provided with the final report. o Prepare either an approved jurisdictional determination (AJD) or preliminary jurisdictional determination (PJD) form for submittal to the Environmental Protection Agency (EPA)/USACE. o Accompany USACE for field verification during the jurisdictional determination, if required by USACE. Make revisions to report as required. c) Threatened and Endangered Species Assessment o Halff will conduct a threatened and endangered (T&E) species and habitat assessment at both potential project locations as defined above by performing a literature review of federal-and-state-listed threatened and endangered species for Harris County and evaluating the study area for suitable habitat for identified species. The investigation will also include a search request for the Texas Natural Diversity Database (TXNDD). TXNDD is a record of occurrences for rare plant and animal resources that is based upon the best available information to Texas Parks and Wildlife Department (TPWD). The TXNDD data does not equate to absence of a species on the site, general observations during field visits shall be utilized. The Engineer shall provide a T&E report, signed by a qualified expert, addressing: Whether preferred habitat or designated critical habitat for any listed species is likely to be presented within the project area, Whether any listed species is likely to occur, and Whether the project will affect or has the potential to affect federally listed species, Whether the project is likely to result in a ÐtakeÑ of a state-listed species. d) Cultural Resources Desktop Analysis o Halff will conduct a review of THCÓs Archeological Sites Atlas and Historic Sites Atlas to identify any historical structures, cemeteries, or archeological sites that have been recorded within the projectÓs area of potential effects (APE) for archeological resources and non- archeological historic resources. Halff will also review available historical maps, aerial imagery, soils/geology maps, and USGS topographic maps to assess the likelihood of undocumented historical structures, cemeteries, and archeological sites to occur within the APE.