none, Plans only - Interior remodel , Correspondence•
L._. ._._.� T.I.N. ENGINEERING cO1PANY
Gaotachnical • Structural • Environmental
171134 Raney Drive a Torrance, CA 90504
Tel: (310) 371-7045 Fier: (310) 371•3856
File No.: 010639
January 21, 2003
City of Rolling Hills
olo Mr. Joe Abdo
00 Buggy Whip Drive
Rolling HUH Califbaia 90274
SUBJECT: Imported Soil for Proposed One -Story House Addition at 0 Buggy Whip Drive, Rollin g
Hills, California
Dear Mr. Abdo:
In accordance with the request by your project contractor, Mr. Douglas Moms, we have completed
this letter In otter to request the City of Rolling Hills to allow the project grading contractor to import
drier so11 from 14 Outrider of the City of Rolling Hills to the subject site in order to expedite fill
grading at the subject site.
The existing on -site piled fill soil was generated from over -excavation at the subject site. This fill soil
consisted of a silty clay and abundant bedrock fragments with high moisture content. Moisture content
of the clayey soil was approximately 41 % high (suitable moisture content should be between $6 to
34%) after drying for one week. The on -she wet soil may take additional 3 to 4 weeks to dry excess
moisture out. Over -excavation, approximately 5 to 6 feet deep, was performed in the slab area bf the
proposed residential building. Once rain comes, this over -excavation area will be filled with water and
the fill grading will almost be impossible to properly complete within months. In additional, ontc the
wet soli soaked with additional water, the wet soil will need more time to dry excess moisture out.
Therefore, it Is practical to import drier soil from outside to mix with the on -site wet sail in order to
obtain the Jill material with an adequate moisture content to complete the fill grading at the subject site.
It is our understanding that this import is intern to complete the fill grading. It is not inteett to ineirease
tbotage of the proposed residential building.
Thank you for this opportunity to be of service. If you have any questions regarding this letter, please
contact the undersigned at the letterhestd location.
TSCL:ir
No. 44ws
CIVIL.
Very truly yours,
T.I.N. ENGINEERING COMPANY
Tony S. C. Lee, M.S., P.E.
Project Engineer
CITY OF ROLLING HILLS
Appruv d /1-
PLAi:NiNGLEPARTMENTD
Dale 1
/i 2/0 —5
Datd
4918 CAMERINO ST.
LAKEWOOD, CA 90712
ST. LIC. # 452831
562-634-4804
DOUGA.S MORRIS CONSTRUCAN
GENERAL BUILDING CONTRACTOR
January 22, 2003
City of Rolling Hills
Subject: 0 Buggy Whip Drive
Import Footing Soil
Mr. Craig Nealis
Please find attached a letter from T.I.N. Engineering Company, the geotechnical engineer on the above
referenced project.
We are proposing to mix the drier footing soil, approximately 250 yards, from # 14 Outrider with the moist soil
at # 0 Buggy Whip Drive.
The mixing of the two (2) soils will provide a suitable moisture content which should be between 26% and 34%
In lieu of the present 41%.
The soil is only being placed at the over excavated area under the proposed slab at # 0 Buggy Whip Drive.
The finish floor elevations will remain the same.
CITY OF ROLLING HILLS
Apr Cdt
EPARTMENJ