ERTC Soil Remediation

There are big rocks and boulders buried in the ERTC property acquired by PPH for the new hospital. PPH knew about the buried rocks (with accompanying voids), and the estimated remediation costs, BEFORE it acquired the property.

Here is a handout having a selection from documents received based on requests to PPH about the "soil remediation" issue.
Handout 11/07/2007

Exemplary quotes:
"However, for this rock fill material loosely constrained by smaller gravel and fine sands, there is no known method for predicting its seismic performance, ground motion characteristics or stability under ground shaking. We would be hard pressed to place our engineering seal of approval on the report recommending construction of a hospital on these rock fill materials at the ERTC site."

"The most rational option for remediating the grading conditions so the entire site may be used for hospital construction would be to remove and replace the rock fill with fine fill materials using the ground-up boulders in the process. . . . The option of removing, grinding up the rock materials to fine materials and replacing them in a properly compacted process over the site has been estimated at $30 Million."

"We are concerned that some areas of the site may not conform to the City's rock fill placement requirements as shown in Appendix A in the reports. Prior to approval of the final grading for ERTC, and issuance of a grading permit for PPH, we would like to receive clarification on these issues."