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HomeMy WebLinkAboutCT 06-27; MUROYA SUBDIVISION; GEOTCHNICAL DESIGN CRITERIA FOR DRAINAGE SWALES; 2011-11-03GEOCON INCORPORATED (07) GEOTECHNICAL • ENVIRONMENTAL. MATERIALS Project No. 07671-52-01 November 3, 2009 Revised November 3, 2011 Taylor Woodrow Homes Incorporated 16745 West Bernardo Drive, Suite 140 San Diego, California 92127 Attention: Ms. April Tomillo Subject: GEOTECHNICAL DESIGN CRITERIA FOR DRAINAGE SWALES MUROYA PROPERTY CARLSBAD, CALIFORNIA Dear Ms. Tornillo: In accordance with your request, we prepared this revised letter to provide our opinion regarding the precise grading of sideyard swales along residential units within the subject development. We revised the previous letter to include swales that are closer than originally estimated. We understand drainage swales will be located 3 feet from the structure perimeter with a minimum drainage gradient of 2 percent in accordance with City of Carlsbad Standard Drawing GS-1 5, Case 2. Based on discussions with the project civil engineer, we understand the depths of the swales will range between 0.1- and 0.3-foot below the planned pad elevations. We opine the planned swales can be constructed from a geotechnical engineering standpoint. We understand the foundations for the planned structures will be post-tensioned; therefore, the foundations do not need to be deepened. 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, Shawn Foy Weedon ft 2714 GE 2714 tLp.o813w13 AS:SFW:vb (2) Addressee (2) Pangaea Land Consultants Attention: Mr. Chuck Glass 01 411111d 6960 Flanders Drive 0 San Diego, California 92121.2974 U Telephone 858.558.6900 m Fax 858.558.6159 GEOCON INCORPORATED GEOTECHNICAI. CONSULTANTS Project No. 07671-52-01 November 3, 2009 Taylor Woodrow Homes Incorporated 16745 West Bernardo Drive, Suite 140 San Diego, California 92127 Attention: Ms. April Tomillo Subject: MUROYA PROPERTY CARLSBAD, CALIFORNIA GEOTECHNICAL DESIGN CRITERIA FOR DRAINAGE SWALES Dear Ms. Tomillo: In accordance with your request, this letter has been prepared to provide our opinion regarding the precise grading of sideyard swales along residential units within the subject development. If drainage swales are planned for a location within 5 feet from the structure perimeter, the footings should be deepened to accommodate minimum foundation embedment. We recommend that the location of the deepened footing be shown on the plot plans. We understand that Geocon Incorporated will be provided copies of the plot plans and will observe in the field that the deepened footings are properly excavated during the foundation excavation observation. Should you have any questions regarding this letter, or if we may be of further service, please contact the undersigned at your convenience. 0J Very truly yours, 0 CORPORATED z Kon oFESS, NO. 2714 - GE 2714 Exp.06/30/ w i - AS:dmc 'OFCALO C.) (2) Addressee Z (2/del) Hunsaker & Associates Attention: Ms. Marybeth Murray . 6960 Flanders Drive U San Diego, California 92121.2974 • Telephone (858) 558.6900 U Fox (858) 558.6159 .toL -a-i