129-26 (Exhibit A) STV-consultant-ageement_2026-01-05.pdf

Gregory Avenue and Lowell Avenue Safe Routes to School Preliminary Engineering, Final Design, and Construction Engineering Services Page 6 Preliminary Engineering – Scope of Work limits. No hydraulic modeling is anticipated. Drainage design and improvements are not anticipated. STV will investigate alternatives to avoid triggering the NJDEP SWM Rules by reducing cartway widths such that new sidewalk (impervious area) is offset by the removal of existing roadway pavement area. Additionally, STV will investigate using porous concrete sidewalk to minimize added impervious surface area. This proposal does not include SWM analysis. If deemed a major development, supplemental services will be required. Obtain Maps for Storm Water Management Rules Compliance STV will obtain soil survey maps from the NRCS and Land Use maps from NJDEP for the study area, and a USGS Digital Elevation Model. All maps will be geo-referenced to the state plane coordinate system to delineate the drainage areas and compute the hydrologic parameters. Prepare Drainage Area Maps STV will produce drainage area maps for the study area. STV will delineate the watershed boundaries that contribute storm-water runoff to the project site. The drainage area boundaries will be field verified, and any additional drainage features identified that may alter the hydrologic characteristic of the watershed will be added. Perform Preliminary Storm Water Management (SWM) Analysis As previously mentioned, if the project exceeds the thresholds for triggering the NJDEP SWM Rules. STV will prepare calculations to determine the required water treatment and TSS percentage removal as well as water quantity volume. STV will analyze and design the SWM for flood control in accordance with NJDEP rules. Finding suitable locations for SWM BMPs will be conducted under this task. Using the soil test pits and lab analysis, any proposed basins will be designed in accordance with the BMP Manual. b. Prepare Detailed

ll be conducted under this task. Using the soil test pits and lab analysis, any proposed basins will be designed in accordance with the BMP Manual. b. Prepare Detailed Hydrologic and Hydraulic (H&H) Analysis (3038) H&H analysis is not anticipated for this project. There are no hours associated with this activity. 5. STRUCTURES There are no existing structures impacted with the project limits. Retaining walls will be investigated to minimize impacts to the properties adjacent to the proposed sidewalk. Three retaining walls are proposed within the project limits: • Lowell Avenue Retaining Wall, Lawrence Avenue to Helen Avenue • Lowell Avenue Retaining Wall, North of Helen Avenue • Gregory Avenue Retaining Wall a. Prepare Structural Design Recommendation Summary (3100) STV will prepare a structural design recommendation summary that documents the existing conditions, design parameters and criteria, structure alternatives development, structural selection process, recommended structure and aesthetic treatments, MPT and staging, and other essential criteria required for the proper selection of the recommended structural elements. In addition, impacts to utility, right of way and environmentally sensitive features will also be documented in the Structural Design Recommendation Summary. 6. GEOTECHNICAL ENGINEERING