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616, Seeking approval to leave lowe, Studies & ReportsCOUNTY OF LOS ANGELESy. DEPARTMENT 0P PUBLIC WORKS MATERIALS ENGINEERING DIVISION Address: 900 S. Fremont Ave. Alhambra, CA 91803 Telephone: (818) 458-4925 Calling hours - Monday through Addition Thursday 8-9 a.m. & 3-4 p.m. Location 29 .rnurh MiddliorjagP r.ana Rc,1 1 i rtn wi 1 1 a Developer/Owner Kwn 1Taihnsnn Engineer much AAy P.ngi r+rao 3ng_ Geotechnical Engineer G 14n7n-4,61 Geologist Fhieee Miscellaneous Plan Check No e7e7e8a348 I Review of: District Office Sheet 1 of 1 DISTRIBUTION: 19 n2 - Drainage and Grading - Geo/Soils Central File - District Engineer _ - Geologist - Geotechnical Engineer _,_ Engineer Site Plan Dated By Processing Center 1/1/92-- Geotechnical Report Dated A/2S/9_5_ Geologic Report Dated _i./22h96_ REMARKS: Cr r� r ; Sy Cw.: ,� •. 1. Provide additional data which further substantiates the glide plane shear strength values utilized in the slope stability analysis.._�� T„l 'T'A7 lee '741i $ 2. Provide static and seismic slope stability for cross sectio4D-Dutilizing a translational failure mode_ Also, provide a geotechnical cross section showing the critical failure plane used in analysis. Indicate the various shear strength / parameters used in the analysis in the appropriate segments of the failure plane.:, Show location of the cross sections used in slope stability analysis on the • a r. geotechnical map. Recommend mitigation if factors of safety are below County T, minimum standard. J / J 3. Provide static and seismic slope stability analysis for all cut slopes which exhibit?-)�,� adverse bedding conditions. Also, provide a geotechnical cross section showing the critical failure plane used in analysis. Indicate the various shear strength parameters used in the analysis in the appropriate segments of the failure plane_ Show location of the cross sections used in slope stability analysis on the geotechnical map. Recommend mitigation if factors of safety are below County minimum standard. - 5--mac. S eeee, : �.. , ._i., - r Gur ., 1 , 4. Provide data on the possible adverse impact of the private sewage disposal system relative to site stability and adjacent properties. Discuss the path of migration of the effluent and whether ponding or daylighting of the effluent will occur. Stability calculations must consider the effect of ponding/perched groundwater. 5. The Department of Public Works "Geotechnical Site Inspection" review is intended to preliminarily tell you if readily apparent conditions indicate that a geology or soils report may be required and/or to tentatively indicate possible conditions that may have to be met prior to issuance of a permit. Any comments, determinations, opinions or other statements concerning the property which are contained in this review sheet are tentative and subject to change. Additional data may be brought to the Department's attention which may materially affect and/or supersede statements made herein. Because of the very limited nature of the review conducted by this Department, any statements made in this review sheet are not binding on this Department and are not to be relied upon by anyone in deciding whether to build on or buy any property. Further review requires submittal of a permit application for Grading and/or Building. Prepared by _ __ ller A. Steuer -- Date 4/7/97 74OT1CP• Public safety, relative to geotechnical subsurface exploration, shall be provided in accordance with current codes for excavations. inclusive of the Los Angeles County Code, Chapter 11.48, and the State of California, Title 8, Constriction Safety Orders. skrut • TOTAL P.02 2. Sheet_ of STATUS CHECKS: (819) 458-4925 8-9 am & 3-4 pm Mon.-Thur. Thomas Guide Tract 7/A71 Patent Tract Site Address *2 irtrller;deo I ana Geologist KArth ehlorr Geotechnical Engineer AWN! Angeles County Department of Public Wo•' Dist. Office 12 0P MATERIALS ENGINEERING DIVISION F ✓ NF GEOLOGIC REVIEW SHEET ._ Disaster 900 S. Fremont Ave., Alhambra, CA 91803 (Fees Waived S TEL. (818) 458-4925 Job No. Hrs. Review of: Miscellaneous Inspection e7o22RR34R For: _V. _ Geologic Report(s) Dated __Eb1Prr R/92/AR Geotechnical Engineering Report(s) Dated Lots) 1 Location __City of Rollin© hills Developer/owner )nhnenn Engineer/Arch.Routh Ray Addition and Stahl° SW1U R ') /QF DISTRIBUTION _2_ District Office _1 Geologist 1 Geotechnical Eng. 1 Section File — Grading Section _L. Process Center _ Supervisor An addendum geologic and soils report is required. The reports must address, but not be limited to, the following: 1. It appears that the bedding Otagng the top of cross-section A -A' and B-B' could be daylighted. Will the bedding be unsupportive in the proposed cut slopes? Mitigate es warranted. How does the on -site sewage disposal system affect the stability of the landslide? Will sewage effluent reach the location of the landslide? a. Please plot the location of seepage system (existing and future) on the geology map and sections. b. Plot the direction and flow of the sewage effluent on the cross -sections. 3. The consultant geologist must make an unequivocal and definite 111 statement. — 4. Please refer to soils review sheet dated 4/7/97 N u i r , r, -c 5. The Department of Public Works "Geologic Site Inspection' review is intended to preliminarily tell you if readily apparent conditions indicate that a geology or soils report may be required and/or to tentatively indicate possible conditions that may have to be met prior to issuance of a permit. Any comments. determinations, opinions or other statements concerning the property which are contained in this review sheet are tentative and subject to change. Additional data may be brought to the Department's attention which may materially affect and/or supersede statements made herein. Because of the very limited nature of the review conducted by this Department, any statements made in this review sheet are not binding on this Department and are not to be relied upon by anyone in deciding whether to build on or buy any property. Further review requires submittal of a permit application for Grading and/or Building. Comment (Number change e► 1996 revised County Building Code) Prepared by. Robert Thomas Reviewed by Date 4/13197 NOW. Public safety, relative to geotechrSical subsurface exploration, shalt be provided in accordance with current codes for excavations, inclusive of the Los Angeles County Code, Chapter 11.48, and the State of California, Title 6, Construction Safety Orders. Bob/31873