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HomeMy WebLinkAboutCT 06-27; MUROYA SUBDIVISION; GRADING COMPLETIONS (2012);GEOCON INCORPORATED GEOTECHNICAL • ENVIRONMENTAL • MATERIALS ) Project No. 07671-52-02 June 7, 20 12 Taylor Woodrow Homes Incorporated 8105 Irvine Center Drive, Suite 1450 Irvine, California 92618 Attention: Mr. Tom Baine Subject: COMPLETION OF GRADft4G, MUROYA PROPERTY - PHASE 2— BUILDINGS I THROUGH 3, 12, AND 24 THROUGH 27 CARLSBAD, CALIFORNIA References: 1. Geotechnical Investigation, Muroya Property, Carlsbad, California, prepared by Geocon Incorporated, dated July 14, 2009 (Project No.. 07671-52-01). - 2. Final Report of Testing and Observation Services Peifornied During Site Grading, Muroya Property, Buildings 1 through 37, Carlsbad, California, prepared by Geocon Incorporated, dated June 7, 2012 (Project 07671-52-02). 3. Grading Plans for. Muroya, prepared by Pangaea Land Consultants, Inc., dated October 19, 2011, Drawing No. 471-7A (Project No. CT 06-27). Dear Mr. Baine: In accordance with the request of City of Carlsbad, we prepared this letter to confirm that the grading of Phase 2 (Buildings 1 through 3, 12 and 24 through 27) of the subject development is complete. From a geotechnical engineering standpoint, earthwork operations were performed in substantial conformance with the referenced report and the building pads have been properly graded to receive the planned improvements. The conclusions and recommendations presented in the referenced reports remain applicable for the development of the project. - Should you have any questions regarding this letter, or if we may be of further service, please contact the undersigned at your convenience. . . Very truly yours, GEOCON INC/RPORATED Shawn Foy Weedon GE 2714 oF ESS, CID 0'\ No. 2714 \ Exp.06/30/13 )I VA (2) Addressee (3/del) Taylor Morrison Homes Job Site Attention: Mr. Gary Boiick 6960 Flanders Drive • San Diego, California 92121.2974 0 Telephone 858.558.6900 0 Fax 858.558.6159 GEOCON INCORPORATED G E 0 T C H N I C A I ENVIRONMENTAL. M AT E R IALS (407/F)~ Project No. 07671-52-02 June 7, 2012 Taylor Woodrow Homes 1ncoporated 8105 Irvine Center Drive, Suite 1450 Irvine, California 92618 Attention: Mr. Tom Baine Subject: COMPLETION OF GRADING MUROYA PROPERTY PHASE 3— BUILDINGS 4 THROUGH I1 CARLSBAD, CALIFORNIA References: 1. Geotechniccil Investigation, Muroya Property, Carlsbad, California, prepared by Geocon Incorporated, dated July 14, 2009 (ProjectNo. 07671-52-01). Final Report of Testing cind Observation Services Performed During Site Grading, Muroya Property, Buildings] through 37, Carlsbad, California, prepared by Geocon Incorporated, dated June 7, 2012 (Project 07671-52-02). Grading Plans for: Muroya, prepared by Pangaea Land Consultants, inc., dated October 19, 2011, Drawing No. 471-7A (Project No. CT, 06-27). Dear Mr. Baine: In accordance with the request of City of Carlsbad, we prepared this letter to confirm that the grading of Phase 3 (Buildings 4 through 11) of the subject development is complete. From a geotechnical engineering standpoint; earthwork operations were performed in substantial conformance with the referenced report and the building pads have been properly graded to receive the planned improvements. The conclusions and recommendations presented in the referenced reports remain applicable for the development of the project. Should you have any questions regarding this letter, or if we may be of further service, please contact the undersigned at your convenience. Very truly yours, cONRPORATED ?2( No. 2714 Shawn Foy Weedon cr- Exp. 06/30/13 GE 2714 (2) Addressee (3/del) Taylor Morrison Homes Job Site Attention: Mr. Gary Bouck 6960 Flanders Drive • Son Diego, California 92121-2974 0 Telephone 858.558.6900 0 Fax 858.558.6159 GEOCON INCORPORATED GEOTECHNICAL . ENVIRONMENTA.L • MATERIALS Project No. 07671-52-02 January 10, 2012 Taylor Woodrow Homes Incorporated 8105 Irvine Center Drive, Suite 1450 Irvine, California 92618 Attention: Mr. Torn Baine Subject: COMPLETION OF GRADING MUROYA PROPERTY MODEL LOTS - BUILDINGS 35 THROUGH 37 CARLSBAD, CALIFORNIA References: 1. Geotechnical Investigation, Muroya Property, Carlsbad, California, prepared by Geocon Incorporated, dated July 14, 2009 (Project No. 07671-52-01). 2. Grading Plans for: Muroya, prepared by Pangaea Land Consultants, Inc., dated October 19, 2011, Drawing No. 471-7A (Project No. CT 06-27).. Dear Mr. Baine: In accordance with your request and the City of Carlsbad, we prepared this letter to confirm that grading of building pads for the models (Buildings 35 through 37) of the subject development is complete. Based on our recent testing and observation services during the grading operations, earthwork operations were performed in substantial conformance with the referenced geotechnical report. We opine that the building pads have been properly graded and are ready to receive the planned improvements. The conclusions and recommendations presented in the referenced report remain applicable for the design of the project. Grading consisted of removing the upper 3 to 5 feet of soil to expose the Very Old Paralic Deposits and placing fill on the order of 10 to 15 feet. The subject building pads are underlain by compacted fill overlying the Very Old Paralic Deposits (formerly described as Lindavista Formation). The undercutting operations extended laterally at least 5 feet outside of building footprint. Fill soil of approximately 10 to 15 feet was placed within Buildings 35, 36, and 37 to achieve a finish pad grade elevations ranging from 338 to 339 feet above Mean Sea Level (MSL). The results of our testing and observation services performed during the grading operations will be included in the final report of grading for the project. We observed compaction procedures and performed in-place density tests during the grading operations to evaluate the dry density and moisture content of the fill materials. We performed in-place density tests in general conformance with ASTM Test Method D 6938 (nuclear). The results of the in-place dry density and moisture content tests will be summarized in the final grading report. In general, the in-place density test results indicate that the fill soil has a dry density of at least 90 6960 Flanders Drive S Son Diego, California 92121.2974 0 Telephone 858.558.6900 0 Fox 858.558.6159 - A. percent of the laboratory maximum dry density near to slightly above optimum moisture content at the locations tested. The approximate locations of the in-place density tests performed during site grading operations will be shown On the As-Graded Geologic Map of the final grading report. Should you have any questions regarding this letter, or if we may be of further service, please contact the undersigned at your convenience. Very truly yours, GEOCON II'TCORPORATED Cristian A. Lin /hawn Foy Weedon Senior Staff Engineer GE 2714 CAL:SFW:dmc (4) Addressee (e-mail) Pangaea Land Consultants Attention: Mr. Dale Mitchell Project No. 07671-52-02 -2 - January 10, 2012