HomeMy WebLinkAbout; Kelly Ranch Area E Desilting Basin; Kelly Ranch Area E Desilting Basin; 2001-01-30JfiN-31-2001 21=06 6195600380 P.02/04
PACIFIC SOILS ENGINEERING, INC.
7715 CONVOY COURT. SAN DIEGO, CALIFORNIA 92111
TELEPHONE: (858) 560-1713, FAX: (658) 560-0380
SHEA HOMES
10721 Treena Street - Suite 200
San Diego, CA 92131-1039 January 30, 2001
Work Order 400625G
Attention: Mr. Greg Ponce
Subject: Geotechnical Summary for the Grading of the Desilting
Basin, Adjacent to Cannon Road, Approximate Station
94+30 to 99+60, Kelly Ranch, Village E, Canterbury Project,
in the City of Carlsbad, California
References: See Appendix
Gentlemen:
Presented herein is Pacific Soils Engineering, Inc.'s (PSE) geotechnical summary for
the grading associated with the desilting basin adjacent to Cannon Road, approximate
station 94+30 to 99+60, Kelly Ranch, Village E, Canterbury project, located in the City
of Carlsbad, California. This report represents a summary of the as-graded geologic
and geotechnical conditions associated with the basin and adjacent cut slope.
Project grading occurred in 1999 and consisted of the excavation of the desilting basin
and adjacent cut slopes. Very minor amounts of compacted fill were placed along the
southern edge of Cannon Road during project grading. The materials encountered dur-
ing the excavation were observed to consist of colluvium and weathered bedrock. Evi-
dence for landsliding, which is discussed in PSE (1998), was observed to be not pre-
sent. Accordingly, based upon our recent observations and our observations during
grading the slopes associated with the desilting basin are considered to be grossly and
surficially stable.
CORPORATE HEADQUARTERS LOS ANGELES COUNTY RIVERSIDE COUNTY SOUTH ORANGE COUNTY
TEL. (714) 220-0770 TEL: (310) 325-7272 or (323) 775*771 TEL; (909) 67S-810S TEL: (714) 730-2122
FAX: (714) 220-9589 FAX: (714) 220-9589 FAX; (909! 676-1879 FAX: (714) 730-5191
JRN-31-2001 21=06 6195600380 P.03/04
Work Order 400625G
January 30, 2001
Page 2
It is our understanding that the City of Carlsbad proposes to infill the basin and create a
pad for a sewer pump station. It is PSE opinion that this is likely to be feasible without
significant remedial grading. Geotechnical review of the proposed design of the sewer
pump station pad should be undertaken prior to grading, particularly if additional cuts
are proposed for the adjacent slopes.
The opportunity to be of service is appreciated, and should you have any questions
please contact the undersigned.
Respectfully submitted,
PACIFIC SOILS ENGINEERING, INC.
Engineering Geologist ^?
Dist: (3) Addressee
Reviewed by:
. HANSON,
VicePresident
JAC/DAM/JAH;KR/G024
PACIFIC SOILS ENGINEERING, INC.
JfiN-31-2001 21=08 6195600380 P.04/04
Work Order 400625G APPENDIX
January 30, 2001
REFERENCES
Pacific Soils Engineering, Inc., 1999, Project Grading Report for Lots 1 through 144,
inclusive, and Lot 153, Kelly Ranch, Village E, City of Carlsbad, CA, dated April
12,1999, (Work Order 400625G).
Pacific Soils Engineering, Inc., 1998, Response to City of Carlsbad Review Comments,
Kelly Ranch, Area 'E', in the City of Carlsbad, CA, dated March 3, 1998, (Work
Order 400625G).
PACIFIC aOILB ENQlNEERIlUa, INC.
TOTflL P.04