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/~ <br />ALBUS-KEEFE & ASSOCIATES, INC. <br />GEOTECHNICAL CONSULTANTS <br />December 20, 2006 <br />J.N.: 1369.00 <br />Mr. David DiRienzo <br />Urban+West <br />936 East Santa Ana Blvd. <br />Santa Ana, CA 92701 <br />Subject: Geotechnical Recommendations for Settlement Monitoring of Adjacent <br />Buildings, Proposed Courthouse Lofts, 320 West Fourth Street, City of Santa <br />Ana, California <br />Dear Mr. DiRienzo; <br />At your request, Albus-Keefe & Associates, Inc. has developed an overview of recommended <br />settlement monitoring of the adjacent buildings for the site referenced above. Settlement monitoring <br />of the two adjacent buildings on either side of the proposed construction will entail attaching <br />settlement monuments onto the sides of these buildings at select locations. These monuments should <br />be surveyed prior to grading of the site and immediately prior. to foundation and building <br />construction. During foundation and building construction, these settlement monuments should <br />initially be monitored daily, then weekly, and then possibly biweekly or monthly. The monitoring <br />schedule will depend on the actual measurements recorded at that time and the proposed loadings <br />being placed. Settlement limits will depend on a structural evaluation of these adjacent buildings <br />and recommendations from the project structural engineer. A settlement response plan may be <br />developed to detail our response in reporting and alerting the project team based on review of field <br />survey data measurements. <br />If you should have any questions or need clarification regarding these recommendations, please do <br />not hesitate to call this office. <br />Respectfully submitted, <br />Albus-Keefe & Associates, Inc., <br />~~~~ <br />Douglas T. Abernathy, <br />Senior Engineer <br />1011 North Armando Street, Anaheim CA 92806-2606 (714) 630-1626 FAX (714) 630-1916 <br />• :p7 ~'~ <br />• . `' • <br />