O17 West_Essex_Highlands_Geotech_Slope_Stability_Review_20250716

Princeton Hydro, LLC Page | 5 In conclusion, the recent slope stability analysis is inadequate to assess the conditions of the subject slope at proposed Building. The parameters used only reflect the most competent locations above the top of the slope of the investigation and not the degraded bedrock conditions found in the middle slopes on the site. By also leaving out the impact of the subsurface wastewater utility line and the less competent Feltville Formation provides an unrealistic evaluation of the site and provides a false sense of security that the subject proposed Building D can be constructed without initiating landslide activity. I will be available for the July8 16, 2025 Planning Board meeting to discussion my observations and conclusions. Thank you. Sincerely, Geoffrey M. Goll, P.E. President Princeton Hydro, LLC cc: WeCare