PC-2026-15 - Laserfiche WebLink

330 Land Company, LLC 9785.004.001 Arroyo Lago October 31, 2025 RESPONSE TO CITY REVIEW COMMENTS Page 5 BSK Comment 13 – Geotechnical Report, Section 5.3, Differential Fill Slope Mitigation ENGEO should reference Figure 2C to clarify where this condition exists. ENGEO Response to Comment 13 Figure 2C is now referenced in this section. BSK Comment 14 – Geotechnical Report, Section 5.3.1, Option 1: Subexcavation and Recompaction ENGEO should state how much differential settlement is estimated to remain after this overexcavation. ENGEO Response to Comment 14 Following subexcavation and recompaction, we estimate differential fill settlement to be less than ½ inch over a span of 50 feet. The geotechnical report has been revised to include a discussion on differential settlement. BSK Comment 15 – Geotechnical Report, Section 5.4.1, On-Site Existing Fill Because particles up to 8 inches in diameter are allowed for on -site existing fill, consideration should be given to providing recommendations for avoiding nesting (i.e., grouping together) of large particles together during fill placement to avoid potential erosion-driven settlement. Also, consideration should be given to limiting the use of larger particles up to 8 inches above the planned depth of underground utilities to reduce the risk that conventional earthwork equipment may not be able to dig through such material. ENGEO Response to Comment 15 We have revised the geotechnical report and included a recommendation to place on-site existing material in a manner that prevents nesting of larger particles. BSK Comment 16 – Geotechnical Report, Section 6.1, Post-Tensioned Mat Foundations The comment regarding seismically induced settlement should be removed because ENGEO concluded that the potential for seismically induced settlement is low. Perhaps this should be revised to reference the potential for post-construction ground surface movement due to near surface expansive soils and the potential for future total and differential settlement due the presence of significant thicknesses of undocumented fill and compressible soil. ENGEO Response to Comment 16 No exceptions taken. References to seismically induced settlement in this section have been removed.