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Home My WebLink AboutCT 05-07; BRESSI RANCH LOT 40; R VALUE TESTING NORTH AND SOUTH PARKING LOTS; 2007-04-16&109-(r7 SOUTHERN CALIFORNIA GEOTECHNICAL A California Corporation April 16, 2007 St. Croix Capital 406 9th Avenue, Suite 309 San Diego, California 92101 Attention: Mr. Rich Landreth Project No.: 06M112-4111 Subject: R-Value Testing: South Parking Lot Proposed Business Park Bressi Ranch Lot 40, Planning Area 5 SWC of Palomar Airport Road and Melrose Drive Carlsbad, California Gentlemen: CITY OF CARLSBAD APPROVED 0 WITH ADDITIONS As requested by the site superintendent, Mr. Abe Starks, R-Value testing has been completed on a representative soil sample obtained from within the southern half of the proposed asphaltic concrete parking lot subgrade at the project site. The purpose of this testing was to determine the pavement sections for these areas. Results of the recent laboratory testing are as follows: Sample Identification Sample Location R-Value R-3 South of Building 12 13 R-4 South of Building 14 17 Based on information provided to us by Partners Planning & Engineering (PE&E) (the project civil engineer) via Mr. Abe Starks, it is our understanding that pavement design sections in the south parking lot for Traffic index (Ti5 =4.5 and 5.01-were prepared by PE&E consisting of 4 inches of asphaltic concrete (AC) over 7 inches of aggregate base (AB) and 4 inches AC over 9 inches AB for TI=4.5 and 5.0, respectively. Based on the recently completed R-Value testing and the Traffic Indices (TI) provided by PE&E, the aforementioned pavement sections for the on-site asphalt pavements within the south parking lot are considered suitable for their intended use. The pavement subgrade soils should be compacted to at least 90 percent of the ASTM D-1557 maximum dry density. The aggregate base course should be compacted to at least 95 percent of the ASTM D-1557 maximum dry density. The asphaltic concrete should be compacted to at least 95 percent of the Marshall maximum density, as determined by ASTM D-2726. The aggregate base course may consist of crushed aggregate base (CAB) or crushed miscellaneous base (CMB), which is a recycled gravel, asphalt and concrete material. The gradation, R-Value, Sand Equivalent, and Percentage Wear of the CAB or CMB should comply with appropriate specifications contained in the current edition of the "Greenbook" Standard Specifications for Public Works Construction. 22885 East Savi Ranch Parkway v Suite E v Yorba Linda, CA 92887-4624 voice: (714) 685-1115v fax: (714) 685-1118v www.socalgeo.com We appreciate the opportunity of providing geotechnical services on this project. If you have any questions regarding this information, please contact our office at your convenience. Respectfully Submitted, SOUTHERN CALIFORMA GEOTECHNICAL, INC. Robert G. Trazo, M.Sc, G 2655 Senior Engineer Distribution: (1) Addressee (3) TSA, Attn: Abe Starks, pdf SOUTHERN CALIFORNIA lIPr GEOTECHNICAL Bressi Ranch Lot 40—Carlsbad, CA Project No. 06M1144R Page 2 April 6 2007 St. Croix Capital'. 406 9th Avenue, Suite 309 San Diego, California 92101 Attention: Mr. Rich Landreth Project No.: 06M112-4. SOUTHERN CALIFORNIA 1 GEOTECHNICAL A California Corporation Subject R-Value Testing South Parking Lot Proposed Business Park Bressi Ranch Lot 40, Planning Area 5 SWC of Palomar Airport Road and Melrose Drive .Carlsbad,..California Gentlemen: In accordance with your request, R-Value testing has been completed zon representative soil samples obtained from within the southern half of the proposed asphaltic concrete parking lot subgrade at the project site It is our understanding that the City of Carlsbad is requiring this testing for use in determining the pavement sections for the drive lanes and parking stalls Results of the recent laboratory. testing are as follows: Sample Identification Sample Location R-Value R-3 South of Building 12 13 R-4 South of Building 14 17 We appreciate the opportunity of providing geotechnical services on this project. If you have any questions regarding this information, please contact our office at your convenience. Respectfully Submitted, SOUTHERN CALIFDRNIiOTECHNICALJNC, ifr7 Robert G. Trazo, M:Sc, E 2655 Senior Engineer Distribution: (1) Addressee (1) TSA, Attn: Abe Starks 01- No. 2655 I Exp.12/31/O8 At Op 22885 East Savi Ranch Parkway v Suite E v Yorba Linda, CA 92887-4624 voice (714).777-0333 v fax (714) 685-1118 v www.socalgeo.com SOUTHERN CALIFORNIA GEOTECHNICAL A California Corporation Flarch 8, 2007 St. Croix Capital 06 9th Avenue, Suite 309 San Diego, California 92101 Attention: Mr. Rich Landreth Project No.: 06M112-3111 Subject: R-Value Testing: North Parking Lot Proposed Business Park Bressi Ranch Lot 40, Planning Area 5 SWC of Palomar Airport Road and Melrose Dri Carlsbad, California Y OF &/fLSBAD feaQvP. WITH ADDITI NS .3 /Al/, Gentlemen: - , I In accordance with your request, R-V6166 testing 'has'béen cothpleted on representative soil I samples obtained from within the northern half of the proposed asphaltic concrete parking lot subgrade at the project site. It is our understanding that the City of Carlsbad is requiring this testing for use in determining the pavement sections for the drive lanes and parking stalls. Results of the recent laboratory testing are as follows: Sample Identification Sample Location R-Value R-1 Northeast portion of site 29 R-2 Northwest portion of site 16 We appreciate the opportunity of providing geotechnical services on this project. If you have any questions regarding this information, please contact our office at your convenience. Respectfully Submitted, SOUTHERN CALIFORNIA GEOTECHNICAL, INC. Robert G. Trazo, M.Sc./cE 2655 Senior Engineer U Distribution: (1) Addressee (1) TSA, Attn: Mike Shamshoian 22885 Est-Savi Ranch Parkway v Suite E v Yorba Linda, CA 92887-4624 voice: (714) 685-1115 v fax: (714) 685-1118 v www.socalgeo.com