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THIS PAGE IS OVERSIZED AND CAN BE VIEWED IN CENTRAL RECORDS POWER ENGINEERS, INC. Abemathy to Wadsworth 345 kV Transmission Line Project Alternative Route Lenoth The overall length of a particular route can be an indicator of the relative level of land use impacts. That is, generally the shorter the route, the less land is crossed and the fewer potential impacts would result. The total lengths of the alternative routes vary from approximately 32.7 miles for Alternative Route 2, to approximately 51.0 miles each for Alternative Routes 10 and 17. The route lengths reflect the direct or indirect pathway of each alternative route between the Project endpoints. The lengths of the alternative routes may also reflect the effort to parallel existing transmission lines, other existing linear features, apparent property boundaries, and the geographic diversity of the alternative routes. The approximate lengths for each of the alternative routes are presented in Table 4-1. Impacts on Residential Areas Typically, one of the rnost important measures of potential land use impacts is the number of habitable structures located near each alternative route. Based on direction provided by the Commission, habitable structure identification is included in the CCN filing. POWER determined the number of habitable structures located within 500 feet of each alternative route centerline and their distance from the centerline using GIS software, interpretation of aerial photography, and verification during reconnaissance surveys. All 18 alternative routes have habitable structures located within 500 feet of their centerlines. The number of habitable structures located within 500 feet of each alternative route centerline ranges from 16 for Alternative Route 10, to 38 each for Alternative Routes 9 and 18. The numbers of habitable structures located within 500 feet of each alternative route centerline are presented in Table 4-1. Refer to Tables 5-2 through 5-19 located in Section 5.1 for detailed information on habitable structures for each alternative route. All known habitable structure locations are shown on Figure 5-1 (Appendix C). Compatible ROW Commission rules at 16 TAC § 25.101(b)(3)(B) require the Commission to consider whether new transmission line routes are within existing compatible ROWs and/or parallel to existing compatible ROWs, apparent property lines, other natural or cultural features. Criteria were used to evaluate compatible ROW utilization, length of route parallel and adjacent to existing transmission line ROW, length of route parallel to other existing linear ROWs, and length of route parallel to apparent property lines. It should also be noted that if a link parallels more than one existing linear corridor, only one linear corridor was tabulated (e.g., a link parallels both an existing transmission line and a roadway, but it was only tabulated as paralleling the transmission line). None of the alternative routes are proposed to utilize existing transmission line ROW. The alternative routes with lengths paralleling existing transmission line ROW range from 0.3 mile for Alternative Route 13, to 6.5 miles for Alternative Route 18. The lengths parallel and adjacent to existing transmission line ROW for each of the alternative routes are presented in Table 4-1. The alternative routes with lengths paralleling other existing compatible ROW, including highways, roads, and railways (excluding pipelines) range from approximately 13.1 miles for Alternative Route AUS 146-0259 (PER-02) SHARYLAND 150405 (2018-06-01) LD PAGE 113 401 POWER ENGINEERS, INC. Abemathy to Wadsworth 345 kV Transmission LMe Project 3, to approximately 36.5 miles for Alternative Route 8. The lengths paralleling other existing compatible ROW for each of the alternative routes are presented in Table 4-1. The alternative routes were developed to parallel apparent property boundaries or other natural or cultural features to the extent feasible in the absence of other existing compatible ROW. The route lengths paralleling apparent property lines (or other natural or cultural features) range from approximately 3.5 miles for Alternative Route 5, to approximately 12.0 miles each for Alternative Routes 10 and 17. The lengths paralleling apparent property boundaries (or other natural or cultural features) for each of the alternative routes are presented in Table 4-1. Typically, a more representative account for the consideration of whether new transmission line routes are parallel to existing compatible ROWs, apparent property lines, or other natural or cultural features (not including pipelines) is demonstrated with the percentage of each total route length parallel to any of these features. These percentages can be calculated for each alternative route by adding up the total length parallel to existing transmission lines, other existing ROW, and apparent property lines and then dividing the result by the total length of the alternative route. All the alternative routes parallel existing linear features for some portion of their lengths. The percentage of the alternative routes paralleling existing linear features ranges from approximately 84 percent for Alternative Route 4, to approximately 93 percent for Alternative Route 12. Impacts on Aciriculture Impacts to agricultural land uses can generally be ranked by degree of potential impact, with the least potential impact occurring in areas where cultivation is not the primary use (pasture/rangeland), followed by cultivated croplands. The use of cultivated cropland and pasture/rangeland can typically be continued within the ROW following construction. Most of the alternative routes cross lengths of cropland areas not irrigated by traveling systems; however, due to the relatively small area directly affected (beneath the structure foundations), and the short-term duration of construction activities at any one location, impacts are limited to a small loss of production area associated with the structures and temporary impacts related to construction. Alternative route lengths crossing cropland areas not irrigated by traveling systems; range from approximately 18.6 miles for Alternative Route 1, to approximately 33.3 miles for Alternative Route 13. The lengths of each of the alternative routes crossing croplands not irrigated by traveling systems are presented in Table 4-1. All the alternative routes cross land with known rolling or pivot type mobile irrigation systems; however, the alternative routes were developed in these areas along field edges in order to span the arc of the mobile systems with minimal impact to the systems and land use. Therefore, no significant impacts to the mobile irrigation systems are anticipated. Alternative route lengths crossing land with known rolling or pivot type mobile irrigation systems range from approximately 1.8 miles for Alternative Route 2, to approximately 6.2 miles for Alternative Route 6. The lengths of each of the alternative routes crossing land with known rolling or pivot type mobile irrigation systems are presented in Table 4-1. All the alternative routes cross lengths of pasture/rangeland (including CRP lands); however, because the ROW for this Project will not be fenced or otherwise separated from adjacent lands, no significant long-term displacement of farming or grazing activities is anticipated. Alternative route lengths crossing pasture/rangeland areas range from approximately 8.8 miles for Alternative Route 3, to approximately 18.7 miles for Alternative Route 9. The lengths of each of the alternative routes crossing pasture/rangeland are presented in Table 4-1. AUS 146-0259 (PER-02) SHARYLAND 150405 (2018-06-01) LD PAGE 114 402 POWER ENGINEERS, INC. Abernathy to Wadsworth 345 kV Transmission Line Project Impacts on Oil and Gas Facilities Oil and gas wells and associated treatment facilities and pipelines were identified within the study area using 2015 RRC data layers, aerial photo interpretation, and GIS software generated measurements. In some instances, the set-back distance was reduced due to the need to traverse a particular area to connect the Project endpoints while also considering other existing constraints in the area. There are no existing known oil and gas wells within 200 feet of the ROW centerline and no length of any alternative routes is parallel to pipeline ROW. The number of known transmission pipelines crossed by each alternative route ranges from approximately 10 each for Alternative Routes 9, 14, and 15, to approximately 16 for Alternative Route 6. The numbers of pipeline crossings for each of the alternative routes are presented in Table 4-1. Pipelines that are crossed by the alternative route approved by the Commission will be indicated on engineering drawings and flagged in the field prior to construction. Sharyland will coordinate with pipeline companies during transmission line construction and operation for continued safe operation of potentially-affected oil and gas facilities. Impacts on Transportation, Aviation, and Utility Features Transportation Potential impacts to transportation could include temporary disruption of traffic or conflicts with future proposed roadways and/or utility improvements. Traffic disruptions would include those associated with the movement of equipment and materials to the ROW, and slightly increased traffic flow and/or periodic congestion during the construction phase of the proposed Project. In the rural portions of the study area, these impacts are typically considered minor and temporary. In the developed portions