Information regarding the conditions of the soil at the site of the development is provided below in ascending chronological order. Some events include links to relevant documentation.
| Date | Event |
|
May 5, 2025 |
City staff resolves to impose soil testing condition as part of grading permit. |
|
January 9, 2026 |
City issues a tree removal permit to developer. |
|
January 12, 2026 |
Toll Brothers completes soil testing. |
|
January 15, 2026 |
While Toll Brothers removes onsite trees, they accommodate a two-day Fire Department Training event involving the Sierra Madre Fire Department and the Los Angeles County Fire Department. |
|
January 20, 2026 |
Toll Brothers completes additional soil testing to confirm an exceedance of soil contaminants in the FS-2 section. |
|
January 22, 2026 |
Toll Brothers begins trenching for installation of a silt fence. |
|
January 27, 2026 |
Hillmann Consulting prepares a Soil Management Plan (SMP), compiled with the soil testing data since January 12, 2026. |
|
January 29, 2026 |
City issues a grading permit to developer subject to soil remediation. |
|
February 4, 2026 |
Group Delta completes review of Hillmann Consulting’s soil management plan. |
|
February 4, 2026 |
City issues temporary construction fence permit to Toll Brothers. |
|
February 5, 2026 |
Hillmann Consulting revises the SMP in response to Group Delta's comments. |
|
February 5, 2026 |
City provides Toll Bros. a letter clarifying scope of remediation. |
|
February 6, 2026 |
Toll Brothers trenches site for installation of temporary construction noise fencing. |
|
February 9, 2026 |
Toll Brothers starts soil remediation through excavation of 100 cubic yards of contaminated materials in the FS-2 section. The soil is stockpiled within the Project site, next to the FS-2 area, placed on and covered with protective plastic sheeting using industry-standard best management practices. |
|
February 9, 2026 |
Toll Brothers retests soil at 5 points in the FS-2 section. |
|
February 12, 2026 |
Toll Brothers removes the soil from the Project site and hauls it to Soil Safe of California facility in Adelanto, CA. |
|
February 18, 2026 |
Toll Brothers provides City with supplementary soil sampling results and manifest copies of soil hauling. |
|
March 2, 2026 |
Toll Brothers meets with City to discuss concerns from neighboring residents. |
|
March 12, 2026 |
Toll Brothers provides the City with a memorandum summarizing the confirmatory soil test results, successful remediation activities, and precision maps locating the area of containment. |