CED_24006174A_250227_FSD_AHE_Geotechnical Data Report

GEOTECHNICAL DATA REPORT (Stormwater Infiltration Testing) February 27, 2025 40 Eagle Ridge Way Block 106; Lot 20.03 Township of West Orange Essex County, New Jersey Prepared for: TheWaymaker LLC 40 Eagle Ridge Way West Orange, NJ 07052 Prepared by: _______________________________ Francisco Sanchez-Dominici New Jersey Professional Engineer License No. GE061874 _______________________________ Ahmed Elmekati New Jersey Professional Engineer License No. GE053487 Colliers Engineering & Design, Inc. 300 Tice Blvd, Suite 101 Woodcliff Lake, NJ 07677 Main: 845-352-0411 Colliersengineering.com Project No. 24006174A

Table of contents Introduction ........................................................................................................................................................................ 1 Available Information ........................................................................................................................................................ 1 Site and Project Description ............................................................................................................................................ 1 Stormwater Subsurface Exploration ............................................................................................................................. 1 Subsurface Conditions ..................................................................................................................................................... 1 USDA Web Soil Survey..................................................................................................................................................... 1 Soil Stratification ............................................................................................................................................................. 2 General Groundwater Observations ............................................................................................................................. 2 In-situ Infiltration Testing ................................................................................................................................................. 2 Proposed Stormwater Facilities ..................................................................................................................................... 2 Measured Field Intake Rate ............................................................................................................................................ 2 Closing .................................................................................................................................................................................. 3 Limitations ........................................................................................................................................................................... 3 Test Pit Logs

Limitations ........................................................................................................................................................................... 3 Test Pit Logs ........................................................................................................................................................................ 2 In-situ Infiltration Test Result .......................................................................................................................................... 3 GEOTECHNICAL DATA REPORT | February 27, 2025

Table Table 1: Summary of In-Situ Infiltration Test Figure Figure 1: Hydrogeologic Map (USDA Web Soil Survey) Drawing B-01-ELP .................................................................................................................................. Exploration Location Plan Appendices Appendix A .................................................................................................................................................... Test Pit Logs Appendix B ....................................................................................................................... In-Situ Infiltration Test Result GEOTECHNICAL DATA REPORT | February 27, 2025

Introduction In accordance with our proposal dated February 17, 2025, Colliers Engineering & Design, Inc. (CED), performed a subsurface exploration program for the proposed stormwater infiltration BMP areas of the site located at 40 Eagle Ridge Way, Township of West Orange, Essex County, New Jersey. This report presents a summary of the data collected during CED’s field presence and result of the performed in-situ infiltration test. Available Information 1. Drawing titled, “Demolition Plan”, by Colliers Engineering & Design, dated September 17, 2024. Site and Project Description The project site is located at 40 Eagle Ridge Way, Township of West Orange, Essex County, New Jersey. The site is identified as Block 106, Lot 20.03 on the corresponding tax map. The site is bound by Eagle Ridge Way towards West. A residential development is located towards North, and wooded areas are located towards East. A vacant lot bounds the south side of the site. The site is currently occupied by a residential development with several structures and appurtenant site features. Surface grades generally slope downward from El. 628± towards West to El. 603± towards East. We understand stormwater management facilities are proposed at several locations on the eastern side of the site. Stormwater Subsurface Exploration CED performed a subsurface exploration program consisting of five test pits, TP-01 through TP-05. The test pits were performed at locations selected by the site-civil engineer and extended up to 12.5 ft below existing surface grades. Drawing B-01-ELP presents the location of the test pits. The test pits were performed by Grabowski Construction, Inc. of West Orange, New Jersey, on February 18, 2025, under the continuous observation of CED representative, Mr. Francisco SanchezDominici, PE. Our representative located the test pits based on existing site features and handheld GPS equipment. The test pits were backfilled upon completion. Subsurface Conditions USDA Web Soil Survey Available information from the Web Soil Survey Tool provided by the United States Department of Agriculture Natural Resources Conservation Service suggests that there are up to two soil types and reports depths to the water table, noted as rating, within the project site limits as presented in Figure 1. GEOTECHNICAL DATA REPORT | February 27, 2025 Page 1

Soil Stratification The test pits encountered the site soils exposed at the surface. The site soils generally consist of silt loam, silt clay loam, loamy sand, varying amounts of gravel/boulders. The test pits were terminated within these soils. The test pit logs are presented in Appendix A. Soils encountered were classified in the field in general accordance with the USDA Soil Classification System, a summary of which is presented in Appendix A. General Groundwater Observations Groundwater conditions were not encountered within the test pits during the time of our exploration. Groundwater observations noted above reflect the conditions at the time of our onsite presence. Note that groundwater levels can fluctuate with locations, seasonal changes, precipitation, nearby construction activities, foreign influences such as leakage into and out of utilities, and other factors. Pockets or seams of gravels, sands, silts, or open fractures and joints can store and transmit “perched” groundwater flow or seepage. In-situ Infiltration Testing Proposed Stormwater Facilities Test pit TP-01 was terminated before reaching the bottom of the proposed stormwater facility due to concerns of damaging existing subsurface utilities at the request of the general contractor. Test Pits TP-04 and TP-05 were terminated before reaching the bottom of the proposed stormwater facility due to refusal on bedrock at depths ranging up to 12.5 ft below existing grades. Test Pits TP-02 and TP-03 were terminated at depths ranging up to 9 ft below existing grades due to refusal on bedrock. A single ring infiltrometer test was performed within Test Pit TP-03. The single ring infiltrometer test was performed in accordance with Chapter 12 of the New Jersey BMP Manual. A summary of the single ring infiltrometer test is presented in Table 1. Measured Field Intake Rate Table 1 presents a summary of the in-situ infiltration test performed and corresponding result. The result of the in-situ infiltrations test is presented in Appendix B. Table 1. Summary of In-Situ Infiltration Test Location ID Test Depth (ft) TP-03 3.5 Soil Description (see logs for full description) Loamy Sand GEOTECHNICAL DATA REPORT | February 27, 2025 Test Type Measured Field Intake Rate (in/hr) Single Ring 6.2 in/hr Page 2

Closing The data presented in this report is based on field observations and measured test results. The number, location, and depth of the explorations were completed as requested by the project team. Limitations This data report and all supporting documentation have been prepared exclusively for the use of TheWaymaker LLC pursuant to the Agreement between Colliers Engineering & Design (DBA Maser Consulting) and TheWaymaker LLC. All provisions set forth in the Agreement and the General Terms and Conditions attached thereto are incorporated herein by reference. No warranty, express or implied, is made herein. The field observations and data contained in this report are based on limited exploration and testing of the subsurface at the referenced project site, at the locations and depths indicated in this report. The explorations indicate subsurface conditions at the specific locations, depths, and times explored. This report is intended to serve as a data report. CED is not responsible for any claims, damages, or liability associated with interpretation of subsurface data or reuse of the subsurface data or engineering analysis without the expressed written authorization of CED. This data report and related documentation are instruments of service. The subject matter of this data report is limited to the facts and matters stated herein. The scope of this subsurface exploration did not include geotechnical interpretation or evaluation of the findings, or investigation or evaluation of any environmental issues, such as wetlands, or hazardous or toxic materials on, below, or in the vicinity of the subject site. Any statements in this report or supporting documentation regarding odors or unusual or suspicious items or conditions observed are strictly for information only. GEOTECHNICAL DATA REPORT | February 27, 2025 Page 3

Figure GEOTECHNICAL DATA REPORT | February 27, 2025

N Figure 1 PROJECT: 40 EAGLE RIDGE WAY Hydrogeologic Map (NRCS Web Soil Survey) TOWNSHIP OF WEST ORANGE, ESSEX COUNTY, NEW JERSEY Project No.: 24006174A

Drawing GEOTECHNICAL DATA REPORT | February 27, 2025