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SPN H.004100 – FEASIBILITY STUDY APPENDIX C ENVIRONMENTAL INVENTORY 040-012-042AH Appendices Lead Sheets PROVIDENCE JULY 2016 I‐10 CORRIDOR IMPROVEMENTS STAGE 0 FEASIBILITY STUDY STATE PROJECT NO. H.004100 FEDERAL AID PROJECT NUMBER H004100 ENVIRONMENTAL INVENTORY EAST BATON ROUGE AND WEST BATON ROUGE PARISHES, LOUISIANA SPN H.004100 - ENVIRONMENTAL INVENTORY TABLE OF CONTENTS Section Page No. 1.0 INTRODUCTION ............................................................................................... 1-1 2.0 ALTERNATIVES ............................................................................................... 2-1 2.1 Mainline Alternative – One Additional Lane ....................................... 2-1 2.2 Interchange Alternative – LA 415 ........................................................ 2-1 LA 415 Partial Cloverleaf ........................................................... 2-1 LA 415 Directional ...................................................................... 2-2 2.3 Interchange Alternative - Highland-Nicholson ................................... 2-2 2.4 Interchange Alternative - Washington-Dalrymple .............................. 2-2 Washington Street I-110 Left Exit ............................................. 2-2 Dalrymple/Washington Consolidated Interchange ................. 2 - 3 2.5 Interchange Alternative - Perkins Road .............................................. 2-3 2.6 Interchange Alternative - Acadian Thruway ....................................... 2-3 Acadian Modification – Ramp Lengthening ............................. 2-4 Acadian Modification – Single-Point Diamond ........................ 2-4 Acadian Modification – Diverging Diamond ............................ 2-4 2.7 Interchange Alternative - I-10/I-12 Split - College Direction Ramps . 2-4 3.0 AFFECTED NATURAL ENVIRONMENT .......................................................... 3-1 3.1 Prime and Unique Farmland ................................................................ 3-1 3.2 Threatened and Endangered Species ................................................. 3-1 3.3 Essential Fish Habitat ........................................................................... 3-4 3.4 Wetlands ................................................................................................ 3-4 3.5 Waters Resources ................................................................................ 3-4 Surface Water ............................................................................. 3-4 Groundwater ............................................................................... 3-6 3.6 Floodplains ............................................................................................ 3-6 3.7 Natural and Scenic Rivers .................................................................... 3-7 3.8 Unique and Environmentally Sensitive Areas .................................... 3-7 3.9 Noise ...................................................................................................... 3-7 3.10 Air Quality .............................................................................................. 3-9 3.11 Cultural Resources ............................................................................. 3-10 3.12 Hazardous and Solid Waste Concerns ............................................. 3-10 Hazardous Waste Sites ............................................................ 3-11 Underground Storage Tanks ................................................... 3-12 Oil and Gas Wells ..................................................................... 3-12 4.0 AFFECTED HUMAN ENVIRONMENT .............................................................. 4-1 4.1 Land Use ................................................................................................ 4-1 4.2 Community Demographic .................................................................... 4-1 4.3 Environmental Justice Analysis .......................................................... 4-6 4.4 Community Facilities ............................................................................ 4-8 5.0 PERMITS .......................................................................................................... 5-1 6.0 REFERENCES .................................................................................................. 6-1 7.0 LIST OF ACRONYMS ....................................................................................... 7-1 040-012-040AH Env Inventory - Final 070716 i PROVIDENCE SPN H.004100 - ENVIRONMENTAL INVENTORY TABLE OF CONTENTS (continued) LIST OF TABLES Table 4-1 Population Data ............................................................................................... 4-3 4-2 Demographic Data ........................................................................................... 4-4 4-3 Poverty Status in the Past 12 Months ............................................................ 4-5 LIST OF FIGURES Figure 1 Buffered Project Study Area ........................................................................... 1-2 2a Buffered Project Study Area With Environmental Constraints ................... 3-2 2b Buffered Project Study Area With Environmental Constraints ................... 3-3 3 Minority Data .................................................................................................... 4-2 4 Poverty Data ..................................................................................................... 4-7 LIST OF APPENDICES Appendix A Existing Site Photographs B Environmental Database Reports B-1 ECOS Reports B-2 EDR Report C Preliminary Traffic Noise Analysis 040-012-040AH Env Inventory - Final 070716 ii PROVIDENCE SPN H.004100 - ENVIRONMENTAL INVENTORY 1.0 INTRODUCTION The Louisiana Department of Transportation and Development (DOTD) and the Interstate 10 (I-10) Corridor Improvement Study Project Team is conducting a Stage 0 Feasibility Study and Environmental Inventory (Feasibility Study) for improvements to I-10 from Louisiana Highway 415 (LA 415) in West Baton Rouge Parish to the I-10 / Interstate 12 (I-12) split at Essen Lane in East Baton Rouge Parish. The proposed project will aim to reduce congestion, improve traffic flow, and improve safety along the corridor. Figure 1 is the Buffered Project Study Area. The purpose of this report is to summarize the environmental screening process conducted on the feasible alternatives and to identify resources associated with the natural and human environment as they relate to the I-10 project study area. The mainline and interchange improvement locations are proposed within West and East Baton Rouge Parishes, Louisiana. 040-012-040AH Env Inventory - Final 070716 1-1 PROVIDENCE SPN H.004100 - ENVIRONMENTAL INVENTORY FIGURE 1 BUFFERED PROJECT STUDY AREA 040-012-040AH Env Inventory - Final 070716 1-2 PROVIDENCE SPN H.004100 - ENVIRONMENTAL INVENTORY 2.0 ALTERNATIVES Multiple build alternatives for the I-10 Corridor were studied using a Tier 1 Analysis as detailed in Chapter 2 and Appendix A of the Feasibility Study. One mainline alternative and 10 interchange alternatives were accepted to move forward into Stage 1, Planning and Environmental. The interchange locations include LA 415, Louisiana Highway 1 (LA 1), Highland Road-Nicholson Drive, Washington Street, Dalrymple Drive, Perkins Road, Acadian Thruway, College Drive, and the I-10/I-12 Split. 2.1 Mainline Alternative – One Additional Lane The One Additional Lane alternative would add one additional lane to both the eastbound and westbound directions on I-10 through the project study area, with the exception of the Mississippi River Bridge. While there are existing sound walls along the I-10 mainline in Baton Rouge, preliminary screening for placement of additional sound walls was conducted. Potential locations for sound walls are discussed in Section 3.9 and will be evaluated further in Stage 1. In the majority of the corridor, adding one lane in each direction can be constructed within the existing right-of-way (ROW). In order for this improvement to take place, interchange modifications would be required. 2.2 Interchange Alternative – LA 415 Two interchanges alternatives west of the Mississippi River Bridge are recommended to move forward. Those options are a Partial Cloverleaf interchange at LA 415 (Lobdell Highway), and a Directional interchange at LA 415. LA 415 Partial Cloverleaf This alternative replaces the existing diamond interchange in the southwest quadrant of this interchange with a Partial Cloverleaf. The improvement entails eliminating the left turn conflict point and providing right-hand lane continuous movement. 040-012-040AH Env Inventory - Final 070716 2-1 PROVIDENCE SPN H.004100 - ENVIRONMENTAL INVENTORY LA 415 Directional Similar to the Partial Cloverleaf alternative, this interchange alternative seeks to improve the south to east traffic movement. Currently, motorists travelling south on LA 415 desiring to proceed eastbound on I-10 make an unrestricted left hand turn from a dedicated turn lane. This alternative replaces that movement with a directional ramp. The ramp would cross over the interstate and combine (at-grade) with the existing north to east travel lane before merging with I-10 eastbound traffic. 2.3 Interchange Alternative - Highland-Nicholson This interchange alternative would lengthen the westbound acceleration and eastbound deceleration lanes on I-10 at this interchange. The lengthening would occur up to the overhead truss (structure) portion of the bridge. 2.4 Interchange