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HARO, KASUNICH AND ASSOCIATES, INC.
CI. /ôC; igq )*-)e~ëeFrt 1CJ
~ CQ;!-lCONSULTING GEOTECHNI L & COASTAL ENGINEERS
Project No, M10031,3File No, 10031,3 8-26-10,doc26 August 2010
PEBBLE BEACH COMPANYP,O. Box 1767Pebble Beach, California 93953
Attention: Cheryl Burrell
Subject: Geotechnical and Geologic Feasibilty Update LetterSpyglass Hill Resort Alternative (The Spyglass Pit)Stevenson Drive at Spyglass Hil RoadPebble Beach, California
Dear Ms, Burrell,
At your request, Haro, Kasunich & Associates is providing a Geotechnical/Geologic
Feasibility Update Letter to our May 2001 Geotechnical Investigation Report andNielsen Associate's July 2002 Geologic Investigation Report for the referenced project.This Update Letter addresses the feasibility of the alternative of developing a resorthotel complex and spa (referred to as the Spyglass Hill Resort) at the Spyglass Pit.
The purpose of this letter is to update the previously mentioned feasibility level report forthe proposed development as it's currently planned. We also provide additionaldiscussion and general recommendations from a geologic and/or geotechnicalstandpoint. The aforementioned reports are an integral part of this study and theycontain data collected during those investigations that is relevant to our currentevaluation that will need to be considered during preparation of plans for the SpyglassHill Resort projects, and during construction of those projects,
Our recommendations are based upon a field reconnaissance of the project area byMark Foxx (Certified Engineering Geologist) and John E, Kasunich (GeotechnicalEngineer); drillng of ten exploratory borings in the vicinity of the proposed structures;four percolation tests in the vicinity of the proposed drainage retention areas; andresults of laboratory testing completed to date, Boring logs, percolation and laboratorytest results are enclosed with this letter, Our evaluation included review of the followingdocuments:
1.1.6 EAST LAKE AVENUE . WATSONVILLE, CALIFORNIA 95076 . (831.) 722-41.75 · FAX (831.) 722-3202
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Pebble Beach CompanyProject No. M 1 0031,3Del Monte Forest Spyglass Hill Resort26 August 2010Page 2
1, Haro, Kasunich and Associates, Geotechnical/Geologic Feasibility ofConstruction letter for Golf Cottages at Spyglass Hill and Stevenson Drive atSpyglass Hill Road, Project No, M7447,3, dated 3 April 2001;
2, Haro, Kasunich & Associates, Geotechnical Investigation For Golf Cottages AtSpyglass Hill Road, Project No, M7447,3, dated 21 May 2001;
3, Nielsen and Associates, Geologic Investigation Of 11 Proposed Golf Cottages at
The Spyglass Pit, Job No, M-1013-G-C, Exhibit C, Dated July 2002;
4, Haro, Kasunich and Associates, Geotechnical Investigation For Alternative 2 GolfCourse Land Use Plan Areas M, N, 0, U and V, Project No, SC3905.1, dated 28October 1996;
5, Foxx, Nielsen & Associates, Geologic Investigation of Alternative 2 Golf CourseLand Use Plan Areas M, N, 0, U & V, Equestrian Center, Collins Field andCollins Residential Parcels, Project No, M-767-G, dated October 1996;
6, Jacobs & Associates, Geotechnical Investigation For Area M, Project No, 5380-M240-D63, dated 4 May 1990;
7. Foxx, Nielsen & Associates, Preliminary Geologic Investigation of Project AreaM, Project No. M-287-G-M, dated 9 July 1990,
Project and Site Description
Based on a preliminary site plan by WWD Engineering (civil engineers of record),Exhibit 12 and 13 dated 12 November 2009 (see attachment Figure 1), the proposeddevelopment wil consist of the construction of a 100 room hotel resort complex withthirteen one to two story public and guest room buildings, a three level parking structurewith two levels of underground parking at the hotel, a spa with underground parking,access streets and drainage improvements,
The resort complex will be located east of a 36 acre preservation area between SignalHill Road and Spyglass Hill Road, The development area size is about 16 acres, The16 acre area is located along the west side of Spyglass Hill Road, right across the roadfrom Spyglass Hill golf course. We presume the proposed buildings will be of steeland/or wood frame and concrete and/or masonry construction, combined with concreteslab-an-grade floors, Actual loads are not known at this time but are expected to be
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Pebble Beach CompanyProject No, M10031,3Del Monte Forest Spyglass Hill Resort26 August 2010Page 3
typical of such construction. The proposed construction will also require retaining walls,parking facilities, driveway access from Spyglass Hill Road, cart pathways, patios andsidewalks, and attendant utilities and landscaping. The underground parking structurewill be located at the southern edge of the development area.
The 16 acre area is comprised of two different terrains, These are a low forested areato the north and an existing quarry to the south of the 16 acre development. The quarry,which is locally known as Spyglass Pit, historically has been an area for stockpiling filland other debris. The low forested area where the spa with underground parking isproposed was mainly used for an existing access road from the quarry to Spyglass HillRoad,
Four one story guest rooms and a spa building with second level guest suites andunderground parking are located in the low forested areas, while the remaining
development will be located at the quarry, The forested area consists of a north southtrending broad ridge with well developed pine trees that have grown within a welldeveloped top soil mantel over decomposed granite, The quarry consists of steeplyinclined graded cuts and fills as part of the quarry operations, The quarry is sparselyvegetated with brush and grasses,
Field Exploration
The purpose of our field exploration was to explore subsurface conditions in areas thathave not been explored during previous geotechnical and geologic studies, Subsurfaceconditions were investigated on 2 and 4 August 2010, The approximate locations of thetest borings in relation to previous exploratory borings are shown on the Boring SitePlan (see attachment Figure 2), The borings were advanced with 6-inch diametermotor-driven continuous flight auger equipment mounted on a truck, The soilsencountered in the borings was continuously logged in the field and described inaccordance with the Unified Soil Classification System (ASTM D2487) (see attachment,Key To Logs, figure 3).
Representative soil samples were obtained from test borings at selected depths, or atmajor strata changes. These samples were recovered using the 3,0 inch outsidediameter (O,D,) Modified California Sampler (L) or the 2,0 inch O,D, Standard TerzaghiSampler (T), The penetration resistance blow counts noted on the boring logs wereobtained as the sampler was dynamically driven into the in situ soiL.
The process was performed by dropping a 140-pound hammer from a 30-inch free falldistance, driving the sampler 6 to 18 inches, and recording the number of blows for
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Pebble Beach CompanyProject No, M 1 0031,3Del Monte Forest Spyglass Hill Resort26 August 2010Page 4
each 6-inch penetration intervaL. The blows recorded on the boring logs represent theaccumulated number of blows that were required to drive the sampler the last 12inches,
Our exploration borings (EX12-5, EX12-6, EX12-6A, EX12-7 and EX12-7 A) performedin the forested area indicate the inboard side of the existing dirt road was cut intodecomposed granite and up to five feet of fill exists has been placed on outboard edgeof the road, The road cut shows a 12 to 18 inches thick clayey soil mantel with rootsover decomposed granite, This road cut profile is a very good indication of what thesubsurface soil will be in undeveloped and ungraded areas of the forest. Ourexploration borings (EX12-1, EX12-2, EX12-3, EX12-4 and EX12-8) performed in thequarry indicate approximately 6 to 20 feet of loose dark grey silty sand with granitegravels and various layers of wood debris (fill) over very stiff grey orange mottled leanclay with sand (native) over dense to very dense decomposed granite. The fill slopesare inclined up to 1:1 (horizontal:vertical), composed of loose soil and wood debrismaterials, and currently showing signs of erosion and surficial instability,
Based on WWD's proposed finished floor elevations for the underground parkingstructure in relation to the soils encountered in our recent borings, the first or lowestfloor will be placed upon very dense decomposed granodiorite. Excavations, rangingfrom 7 to 19 feet deep will be required to accommodate the first floor of the structure.The excavations will be composed of loose dune sands and fil which will be unstablewhen cut vertically, over granodiorite, Excavations made into the granodiorite will bemore stable and require less shoring and/or can be laid back at steeper gradients, Weanticipate these excavations will require shoring and/or will need to be cut back at astable angle. In our opinion, fill and dune deposits will be easy to excavate, but thegranodiorite may require more powerful excavating equipment due to its density. Also,depending on the time of year, seepage perched upon the granodioite will occur andmake excavating and shoring more difficult during construction, Dewatering measuresshould be planned accordingly,
For the proposed spa, WWD shows finished floor elevations to be 5 to 10 feet belowgrade. Based on our exploratory borings, the spa will be placed upon decomposedgranodiorite. Excavations to accommodate the finished floor will be composed of nativeclayey sands and granodiorite. These excavations will likely be stable laid back at anear vertical angle. In our opinion, the native clayey sands will be easy to excavate, butthe granodiorite may require more powerful excavating equipment due to its density,We do not anticipate seepage and ground water issues is this area during construction,however it should be recognized that groundwater levels may fluctuate with time, beingdependent upon seasonal precipitation, irrigation, land use, and climate conditions as
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Pebble Beach CompanyProject No, M10031.3Del Monte Forest Spyglass Hill Resort26 August 2010Page 5
well as other factors, Therefore, water observations at the time of the field investigationmay vary from those encountered during the construction phase and/or afterconstruction of the project.
Due to the unconsolidated nature of dune sands, these sands are very erodible if notprotected, The current layout of the resort indicates that at least 5 guest rooms and theparking structure will be constructed adjacent to the dune sands. The erosion potentialcan be mitigated through proper control of runoff and placing erosion control cover overdisturbed and bare sands,
New residential structures should be designed in conformance with the most currentCalifornia Building Code (2007 eBC), For seismic design, on the basis of the subsoilsand geologic description the project site is classified as Site Class C, based ondefinitions presented in Table 1613,5,2 in the 2007 CBC, The longitude and latitudewere determined using a satellite image generated by Google Earth, These coordinateswere taken from the middle of the area of the proposed improvements:
Longitude = -121,959, Latitude =36,582
The coordinates listed above were used as input in the Java Ground Motion ParameterCalculator created by the USGS to determine ground motion associated with themaximum considered earthquake (MCE) SM and the reduced ground motion for designSD, In lieu of a site specific study, the peak ground acceleration (PGA) was determinedfollowing the CBC 1802,2.7 Exception for liquefaction analysis where;
PGA =80sf2,5
80s= 1,074 9
PGA = 0.43 9
Ground water was not encountered in our borings, however earth materials above thedecomposed granite were moist. Due to the contrast in permeability between thefill/terrace deposits and granodiorite, perched ground water conditions are expected todevelop across this site,
Boring logs are attached to the letter as Figures 4 to 15,
The fil, in its current state and configuration, is not suitable to build upon. The
underlying clayey soils are native terrace deposits that were found to be stiff to very stiffand moderately expansive with a plastic index (Pi) of 18 to 46, Foundations and related
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Pebble Beach CompanyProject No. M10031,3Del Monte Forest Spyglass Hil Resort26 August 2010Page 6
improvements, depending on final grades, will incorporate design parameters to offsetthe expansion potential of these clays, The decomposed granite is dense to very denseweathered granodiorite, a crystalline igneous rock, The decomposed granite offersexcellent bearing support for engineered structures,
Laboratory results are summarized on the right side of the logs of borings at the depthssampled, Graphical laboratory results are attached to this letter as Figures 16 to 25,
Percolation Testing
Percolation testing of the subsurface soil was performed below the existing dirt road inthe forested area. Tests were done at borings EX12-6, EX12-6A, EX12-7 and EX12-7 A.We understand from Jeffrey Lorentz, of WWD Engineering, this area is roughly whereonsite retention is being considered for the development. A 3 inch diameter ADS pipewith the bottom 12 inches perforated was inserted into the percolation test holes, Thebottom 12 inches of annulus space between the walls of the test holes and the ADSpipe were filled with drain rock and the remaining annular space was filed with nativesoils up to the ground surface, After installation, the holes were than pre-saturated 24hours prior to the percolation testing. The percolation testing commenced by adding ormaintaining water levels until the level reach 12 inches from the bottom of the pipe, Anon standard falling head test was then performed by taking 8 measurements of thewater level every 30 minutes for four hours, The purpose of this test was to determine afalling head percolation rate for the bottom 12 inches of the boring,
In summary, at a depth of 3,5 feet below grade, percolation rates were between zeroand 3 inches per hour. At a depth of 6 feet below grade, percolation rates were 0.0 to0.4 inches per hour, These percolation rates can be attributed to the clayey and densenature of the underlying soils, At a depth of 3,5 feet boring number EX12-7 exhibited agood percolation rate (3 inches per hour), However, the remaining borings exhibitedpoor percolation rates (0,0 to 0.4 inches per hour) that are not conducive with on-siteretention, The percolation data and results are attached to this letter as Figures 26 to29,
Discussion. Conclusions and Recommendations
Based on the results of our recent geotechnical and geologic work, therecommendations presented in our May 2001 report and Nielsen Associate's July 2002report (listed below) stil apply,
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Pebble Beach CompanyProject No. M10031.3Del Monte Forest Spyglass Hill Resort26 August 2010Page 7
1. Haro, Kasunich & Associates, Geotechnical Investigation For Golf Cottages AtSpyglass Hill Road, Project No. M7447,3, dated 21 May 2001;
2. Nielsen and Associates, Geologic Investigation Of 11 Proposed Golf Cottages atThe Spyglass Pit, Job No, M-1 013-G-C, Exhibit C, Dated July 2002;
If conflict arises between the recommendations in this and past reports,recommendations in this report govern, If further clarification is needed, please contactour office,
The results of our investigation indicate there are no adverse geotechnical or geologichazards that can not be mitigated and would preclude the development of this project.Primary geologic hazards and geotechnical concerns and/or conditions that may havethe most impact on the proposed project include strong seismic shaking, slopeinstability and erosion of the over steepened fill slopes, extensive grading to ensureadequate removal of unsuitable fill materials, proper placement of engineered fillsbeneath proposed building sites, perched groundwater, expansive clays and uniformbearing support for foundations,
Surface and subsurface site drainage should be controlled during and afterconstruction, WWD Engineering is developing an engineered drainage plan whichincludes capturing surface runoff from the proposed development and retaining it on-siteor allowing for soil infiltration, We recommend on-site detention of storm runoff beutilized for this area, or other areas on this site could be investigated for onsite retentionfeasibility, A detention form of design, releasing the collected runoff at a metered rate,is being considered for this development to be more compatible with the site soilconditions, The metered outlet path will be designed to not exacerbate slope erosion,and negatively impact down slope properties, Where on-site retention is possible, it willbe combined with metered detention to allow for some soil infiltration of accumulatedstormwater, Metered drainage should be dispersed over non-erodible well vegetatedsurfaces that lead into drainage channels, Collected surface drainage should bedischarged in a manner that will not increase the erosion of drainage channels orresidual soil at the discharge points, Underground detention systems should becontained to separate them from perched groundwater and to aid in anchoring themagainst potential buoyant forces, Additional percolation testing to assist the designersin drainage system selection prior to site specific design of the improvements in thedevelopment may determine soil zones with better permeability characteristics thanthose presented in this limited feasibility study,
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Pebble Beach CompanyProject No, M10031,3Del Monte Forest Spyglass Hill Resort26 August 2010Page 8
In our opinion the native soils underlying this site possess adequate bearing capacity forstructural support, The over steepened fill slopes possess poor engineering qualities forstructural support and are considered unstable in their current condition, The existingun-engineered fill in the quarry (up to 20 feet deep) should be removed to firm in situground and replaced with compacted engineered fill where they are to supportimprovements, Engineered fill slopes should be inclined at 2:1 (horizontal: vertical) orflatter before developing the site, Existing cut slopes should be evaluated prior todevelopment. Depending upon the proposed grading requirements and the stabilityanalysis, they can be steeper or flatter as necessary.
We anticipate that structures placed upon compacted engineered fill, stiff native clayand dense decomposed granite or engineered fills may be supported by conventionalspread footings, provided they are designed and constructed in accordance with therecommendations of this update letter, our May 2001 Geotechnical Investigation Reportand Nielsen Associate's July 2002 Geologic Investigation Reports, Alternativefoundation recommendations can be developed for areas underlain by expansive clay,A geotechnical investigation presenting design criteria pertaining to general site grading,building foundations, concrete slab-on-grade, retaining walls, structural pavementsections and general site drainage should be prepared for each structure to assist thedesigners in foundation selection and other design considerations,
In conclusion, it is our opinion that the proposed development is geologically andgeotechnically feasible, provided the recommendations in this report and the priorreports are complied with during design, development, construction, and occupancy ofthe property,
The recommendations of this update letter are to be followed during the developmentprocess for each lot. A design-level on-site retention study and geotechnical studyincluding recommendations specific to the developer's conceptual design should becompleted for each lot. The project engineering geologist and geotechnical engineershould review the developer's conceptual design and related aspects of construction ateach lot.
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Pebble Beach CompanyProject No, M10031,3Del Monte Forest Spyglass Hill Resort26 August 2010Page 9
If you have any questions concerning the data or conclusions presented in this report,please call our office,
~~?-p:-Mark FoxxEngineering GeologistC,E,G, 1493 .
5l if~ r;Jl~William E. St. ClairStaff Engineer
JEKlHPNfdk
Sincerely,
John E. KasunichGeotechnical EngineerG,E. 455
Copies: 6 to Addressee1 to Jeffrey Lorentz, WWD Engineering
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PREVLo\RY DIVISIONS GROUP SECONDARY DIVISIONS aSY:YißOL
CLEAN OW Well grded grv,ls, grvel-sand ,nixnies, little or no fines. I
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GRAVELS GRAVELS(LESS THAN G10 Poorly graded g.av~ls or grrvei-sarú mixtures, little or GO I
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MORE rn.';;- HALF 5% FINES) fu~ Ië ~ 5
OF COAól~ESiJry gravels. grvel-sUld-siit mixtures, non-plastic ti~~ ~, FRACTION :S GM'J ~ .-',. :: ž LARGeR nV\N GR:" VEL
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NO.4 SIEVE \VITz FINES GC Clayey grvels, gravel-sand-clay mixtures. plasiic tines.I
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-z :. :.~ I CLEAN SW Well grded sands. grvelly sands. lio:le or no fines I
~ -: ~ SA1'1DS I SANDSi- -
:: ;: -: (LESS THN-i ~~ MORE THAN HALF SF Poorly grnded sands or grvelly sands, liule or no finesC OF COARSE
5~'G FINES) --U.~:;
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FRACTION is SANDS 3M Silty sands, sand-silt mixtres, non-pla.~tic tines,S:YIALLER THAN WIT
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NO.4 STEVE FINES SC Clayey sands, sand-clay mixtures. plastic tines.
IvfL Inorganic silts and very tine sands. rock tlour. siity or clayeyi
I .:, SILTS AND CLAYSfine sands or clayey silts witli slight plasticiry.
,
.- ~ j ~ CL Inorganic clays oî low to medium plasticity. grawily clays. i.. ;;... ~ sandy clays. silty :lays. lean clays. !:I LIQUID LIMIT 1S LESS nIAN 50%.. ~;;I:: ~ ~ ~
g ~: gI
OL Organic silts and organic sììty cìays of low plasticity.
-t
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"" ;: ~ .j MI-I Inorganic silts. micaceous or diatomaceous tine sandy or
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'.,~ ~:: SILTS .-\ND CLAYS siil)' soils, elastic silts,~
r_~ ~ - LZ .;.~ .-
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CH rnorg:mic clays of high plasticity, filt clays.'. L. ;:LIQUID LU"fIT IS GREATER T'riAN
50~.~1
IOrganic clays ûtinedium to high plasticity. organic silts.Of-
II ilGHL \- ORGA:'HC SOILS Pt I Peat and uther highly organic soi IS.
GRAIN SIZESU.S. STANDARD SER1ES SIEVE CLEAR $()l;,-\RE SIEVE OPENl.GS
200 .iO 10 ~ 3/4" Y' 12"
SA?-D IGRAVEL
SIL TS AND eLA YSFINE I "lEorUM i COARSE I I
COBBLES BOULDERSFfNE COARSE
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."'t:nc,mr:ni:d ":OlIicn:SSIVt: ~tn:n~t~i ,n :,)nS,.it::5 JC:~~irwj by l:iblllatory tc:iüng or o.pproximatcu by :hc Sw.nil:ini P::::c:t:.:lll0l1 -;":si. .-\ST:'l j)~ i S36!. ¡.cáclpcnl.tromcicr. :or,~lnL. M ',I,'ìuaJ ,Jfisi:j\',l\on
Haro Kasunich &KEY TO LOGS Project No.
Associates Spyglass Hill Resort Ml0031.3 FigurePebble Beach, California 23 Au~st 2010 No. 3
I i 0 Kr un¡l~ssoci~~nc.l-"í ""tr~'~t \
Del Monte Forest Subdivision Spyglass HiPROJECT NO. M10031.3
I LOGGED BY BSCDATE DRILLED August 2, 2010 BORING DIAMETER 6" BORING NO, Ex 12-1
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(1C
óz (1(1 a. 0_:: .0a... EE -g ::I1 ",(J I1 VI
SOIL DESCRIPTION
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Mise,LAB
RESULTS
~o(Fill)
~Grey-orange Silty SAND with Granite Gravels,damp, medium dense
SM
r5 1 -1-1 r .'26
19,3 Atterberg LimitsLL = 38.6%PL = 14.0%PI = 25
(Native) Grey orange mottled lean CLAY withSand & vertical decomposed root, nocontamination, moist, very stiff
CL
r ('i:1
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- 10 1 -1-2 ( : :'
tr.;:::l
(Native)50/5" 4,1
Grey-orange Silty SAND, decomposed Granite,dry, very dense
Consistent drilling
SM
ri: -15 1ti-1-3 r ./.. -
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~ 1~25!il
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l rr -! -30
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50/3" 4,0 Sieve Analysis
% Gravel = 5.5% Sand = 79.3% Fines = 15,2
Dry, very dense
Consistent Drillng
~20 1ti-1-4C.'Dry, very dense
Boring terminated at 20.5 feet
50/2" 1.2
~-35 -
HARO, KASUNICH AND ASSOCIATES, INC.
I BY: dk I FIGURE NO, Lf
illro Kr uJl~oci~~nc.
I U 1"~ï" \I LOGGED BY BSC
I
I ~,r"..I C.CIc:
~Oi _i
~-
(-5-
t~
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)-, -~ ~..
~: -15t(c.
~ ~;
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óZCICI C. Õõ.~ ..E't EII t: ::en II en
Del Monte Forest Subdivision Spyglass Hill ResortPROJECT NO. M10031.3
DATE DRILLED August 2, 2010 BORING DIAMETER 6"
SOIL DESCRIPTION
t:::0o:¡
en IIu't¡¡CI'-,-f/~f/t: II::Ü
.. 'of/0..~"'~~00-10all'
..$
,CI"'EU! 0....i..::Cloa;
0.
~'iii ~~t:.. ::CI ' .. è:c: ~ .!!~c. 0'"
è: -=~c: 0:"
BORING NO, Ex 12-2
MISC,LAB
RESULTS
l' -2-1 ( \ .'
1 D-2-2 ("h:,
%"
~..
~.~V;,.fi¡':'
12-2-3( 'I
, l20 1 )-2-4 (
L1 -
l t~ -"
i.' -,
~ -l ~,~!
~'"r
r- 25 12-2-5( ,
-30~
T -!
¿. (
-35 -
(Fil)
Drilled through rock (g 5 feet, start sample at 6feet
Grey Silty SAND with Gravel, dry, dense
(Fill) Grey orange mottled lean CLAY, damp, stiffGrades into Clayey SAND (g 11.5 feet
CL-SC
Spoils smell contaminated!!! (Like fuel or diesel)
(Native) Grey orange mottled Sandy SILT(Decomposed Granite) with seams of grey Sandylean Clay, damp, very hard
Damp, very hard
Sample very disturbed, drill out to 26 feet &sample again
1 -2-6 ( . . White Clayey SAND with decomposed Granite,
1 -2-7 ( ,:::~damp,dense
I : ' : :; (no recovery) very densel' -2-8 ( .::: Grey-orange Silty SAND (decomposed Granite)
:::;; dry, very dense
SM
50/5"ML
50/1"
50/5"
58SC
/ SM 50/2"
OISho
HARO, KASUNICH AND ASSOCIATES, INC.
I BY: dk I FIGURE NO 5'
Consistent Drilling
34
11
5,7 Sieve Analysis
% Gravel:: 12.4% Sand:: 70.9
Fines:: 16.7
IS', '1- Atterberg LimitsLL:: 29.8%PL:: 12.0%
Pi:: 18
14.6
5,7 Sieve Analysis
% Gravel:: 1 .1% Sand:: 39.1
% Fines:: 59,8
5,2
17.2
3,9 Sieve Analysis
% Gravel:: 1,3% Sand:: 72.3
% Fine:: 26,3
,
____ Kr ri,~ Y , #'
I "_0 - a unt 'kssoci"fs~nc,L ~ tt~cal~,/4, \
Del Monte Forest Subdivision Spyglass Hil Resort
PROJECT NO. M10031.3
I LOGGED BY BSCDATE DRILLED August 2,2010 BORING DIAMETER 6" BORING NO. Ex 12-2
¿ ó
I
z Ql Õ.r- CI c._:: .... c. ..Ec.
E "CQlct i:
::c: en ct en
~35 1i?-2-9 (~-
-
~-
r40-
tf, -45l,õl
r~'"
'I
-
-~
~..'"'"'"
;l-50
1, -C-J
~~:i1- -,
:5-
l55If0
tí -
i¡¡
t0u
-f..~ -.,,
r-6Olc'~-4l.
~'";t:i00",
~ -65:~
~II'".Jèi!Ò,
r-70 -
I
SOIL DESCRIPTION
I:
:g~en ct(J"C¡¡Ql'-,-Il~1II:ct::U
.. 'o II0.0..-~~00-10all'
..$
, Ql"'Eu¡ 0....,..:: Ql
O~a.
~'iii e~1:.. ::Qlu ëi~c: ci 'õ"C
~ ""~c: 0:0
MISC,LAB
RESULTS
Dry, very denseBoring terminated at 35.5 feet
.J iui~no
HARD, KASUNICH AND ASSOCIATES, INC.
I BY: dk I FIGURE NO, &
'"0 Kr unfl.ßssoci,.~nc.
t ~ it~"al~t, \Del Monte Forest Subdivision Spyglass Hil Resort
PROJECT NO. M10031.3
LOGGED BY BSC DATE DRILLED August 2,2010 BORING DIAMETER 6" BORING NO, Ex 12-3
¿.i-+'CoClci
óZ QlQl Co Õë.~ .0E'C ECI i: ;:en CI en
SOIL DESCRIPTION
i:
~~en CI()'C¡¡Ql'-._~i~IIi:CI::e3
+' '0~i0.0..-~~00-llaJM
..2
, Ql""Eui 0...., +'
::C1
05;c.
~Ini: 'Cl""ci~è:Coci
e~::(¡ è:'õ'C:E~
MISC,LAB
RESULTS
-0(Fil)
12-3-1 (
Dark grey-black Silty SAND with decomposedGravels, damp, medium dense
SM-526
16.3
,_ tl . ,:1 -10 . .~I 1Q-3-2C~:::
r - :::i:,. L~ I-15
Encounterd wood debris em 8 feet
921,8
Damp, loose
i,
~ ~"
1 2-3-3 ( "\ :: :7
12-3-3 Sieve Analysis% Gravel = 1.4% Sand = 77,8% Fines = 20,7
Damp, loose
1
~~20i¡, -
i
:~ (
:l -
.~ 1-_ 25 1 ' ' :'" I -3-5 ( :.:
1'-3-4 (20
Grey orange Silty SAND (decomposed Granite)dry, very dense
SM 50/6"6.4
12-3-4 HydrometerAnalysis% Gravel = 0% Sand = 45.5% Silt = 18.8% Clay = 35,712-3-4 Atterberg LimitsPi = 46LL = 70.6
PL = 24.3
(Native) Grey, orange mottled Sandy Fat CLAYwith Sand & decomposed Granite, moist, very stiff
CH
'I-
~
ril0,-,4 -i -30!.~
~u'"a
-
Consistent drilling
. ". . .
White-orange Clayey Sandy SILT withdecomposed Granite, damp, very hard
ML 50/6" 12-3-6 Sieve Analysis% Gravel = 0% Sand = 41.2% Fines = 58.8
1 ~-3-6 (
~-35 -
Consistent Drilling,
HARD, KASUNICH AND ASSOCIATES, INC.
I BY: dk I FIGURE NO.1-
I fL r rl~ ial~rI a Ka uni. Associ es nco
~ U L utt~ei.L \
Del Monte Forest Subdivision Spyglass Hil ResortPROJECT NO. M10031.3
I LOGGED BY BSCDATE DRILLED August 2,2010 BORING DIAMETER 6" BORING NO, Ex 12.3
¿ ò
I
ZQ,Q, C. ÕJ: ã.Z' .0..
Ec.E "CQ,ct c:
)00 en ct en
SOIL DESCRIPTION
c:
~gen cttJ"Ci+Q,'-.- II:: IIc: ct::(3
.. '0110.0..-~~00-LOIIM
..2
.Q,"'Eui 0....,..:J Q,oæ
Q.
Z.'iii ~~æ-. .a ~o ~ '!!"CC. 0~ ""~o ':0
MISC,LAB
RESULTS
~35I 1¡2-3-7 (T~ Dry, very dense
Boring terminated at 35,5 feet
.. ~ul2 2.0
~
-40~
~ C,! -45!
~ t
I~ l-~ I-50¡((, -
~ ~'j -
"
tllG 1-55
ii -
l C.1
:1 -
~ r60-
..
r~'l0('j -'i -65!.~
~ti'"0
-
~-70 -
HARD, KASUNICH AND ASSOCIATES, INC.
I BY: dk i FIGURE NO g
In r fi b .\I Hio Ka uni I1YAssocials\nc.U -q, ~ #..~c.'f.~, \. L ll~1
Del Monte Forest Subdivision Spyglass Hill ResortPROJECT NO. M10031.3
I LOGGED BY BSCDATE DRILLED August 2,2010 BORING DIAMETER 6" BORING NO. Ex 12.4
~,t!
t'"
~
1,'
~'"
¡j(1
ii
i!
oÜ
I
it.t-C.Ql0
10-
-
r-
-5~-
r-10
t-
1-15
-
r-
-
~20-
r-
l-25-
I-
óZ QlQl C. Õë.~ .cE'C Eti i: :i(J l\ (J
SOIL DESCRIPTION
i:
~g(J fj
'C¡¡Ql'-.-VI
:=VIi:l\::Ü
õuio.c..-~~00-10COM
..Ql-
, Ql
"'EII 0-..,-:Jelo:ia.
~'iii ~-g
¡¡-. .a~c~ '!!'CC. 0~ ""~o """
MISC,LAB
RESULTS
r"
i8
t~.¡
~,¡
:~
~~~
( - 30 1 -4-6 (
~rl' -!¿ -l ~
-35 -
1/-4-1 ( :::
1 -4-2 C; :,~
, ,
1 D-4-3 ( \ :::
P-4-4 ( :':
1/-4-5 ( ,':
(Fill)
Grey-black Silty SAND, damp, loose SM
,". , ,
Wood debris with Grey Black Silty SAND, damp SM 50/3"
Rough Drilling (wood debris)
", , ,
Wood debris
Rough Drillng
SM 50/3"(Native) Grey-orange Silty SAND (decomposedGranite) with seams of grey Clay, damp, verydense
Consistent drilling
Sluff in sampler (no recovery), very dense 50/3"
::::: (Granite)
'::,, Dry, very dense
Boring terminated at 30,5 feet
50/0"
6
6
Sieve Analysis
% Gravel = 5,0% Sand = 72.7% Fines = 22.3
48.0
34.7
Sieve Analysis
% Gravel = 0.6% Sand = 81.0% Fines = 18.4
2.0
I
HARD, KASUNICH AND ASSOCIATES, INC.
I BY: dk I FIGURE NO, q
ro Kr unUi~ssoci"l~nc.
t '"if~~t~ \Del Monte Forest Subdivision Spyglass Hill Resort
PROJECT NO. M10031.3
I LOGGED BY BSCi
DATE DRILLED August 2,2010 BORING DIAMETER 6" BORING NO, Ex 12--5
¿ óz Qj
I
Qj c. Õ.ie. i;
~..Ec. E 'CQl ra i: ::
CJrn ra
rn
10.'..'
-.'-
~ .'..'-
-5~
1 -5-1 ( r'- .'
r "
SOIL DESCRIPTION
i: ..;:0 Qj i;õui ..o:¡ ..Qj
ëii ~~rnnl ,Efl 'Su C10 i: ''C¡¡ _. Qj"" ::
~it .... ûí~Qj'-~Qí CJ~,-ti
'õ'C~ti 00 ~c.i: ra -10 O~ :æ~::(3 lll" a. CJ
MISC,LAB
RESULTS
(Fil)
Brown Silty SAND, damp, medium dense SM
50/6"5.4(Native) Grey-orange Silty SAND (decomposed
Granite) dry, very denseSM
f¡j¡.
~ t
1
Consistent drilling
-10111-5-2 ( r:
50/6"9,2
Dry, very dense
"¡i _
~ Ir -15 1 -5-3 (",':: __ Dry, very denseBoring terminated at 15,5 feet
Consistent driling
50/6" 3,1
i ~,,,:.
oö
-
~20
). -
~ r
~ I-
~ r25"¡
I
-
~
I¡¡0'""
~ -306
~'"~~ -
c; -
~-35 -
I
HARD, KASUNICH AND ASSOCIATES, INC.
I BY: dk I FIGURE NO, iO
rto ,K! uJJ,~ssocial~nc.
U L l3t1;~'.11 \Del Monte Forest Subdivision Spyglass Hil Resort
PROJECT NO. M10031.3
LOGGED BY BSC DATE DRILLED August 2,2010 BORING DIAMETER 6" BORING NO, Ex 12.6
I ó
I
¿ Z(1Õ(1 Co.i _:: .0.. Co ..ECo
E "C(1 ia i: ::c: en ia (J
r-o , ", ,- , , '
. ,',, "- ' ' ,, ,
, , ,
~, , ,, ,
-
-5~-
t ~!;1 -10'ò,
t.''"c:
;i-
..
l158~:,,," -
~ ~r -i
L-
~ ~20ü,r
'i
-
E
~0u.;l:~
-
r25j
-
~
I;:0'(
~-30
~01a'i -
-
~r-35 -
SOIL DESCRIPTION
i: ..:: 0 (1 ~.. ' ..0; o(J .(1
~~en ri 0.0 '+E ëñu ..- II 0 i: '"Ci¡ _.
(1'+::
(1'- ~~....
c: ~ ûí~._(J ~ êi 'õ"C~(J 00 ~Coi:ri -10 oa; :E~;:(3 (DC" a. c:
SM
MISC,LAB
RESULTS
Greyish brown Silty SAND decomposed Granite,with Clay, damp
Boring terminated at 3.5 feet
I HARD, KASUNICH AND ASSOCIATES, INC.i BY: dk I FIGURE NO. II
rlroKr uJl~ssocial~nc,
II t ~ t1~'sal ~t' \
Del Monte Forest Subdivision Spyglass Hil ResortPROJECT NO. M10031.3
LOGGED BY BSC DATE DRILLED August 2, 2010 BORING DIAMETER 6" BORING NO. Ex 12-6A
¿,¿..a.aiC
-0
òZ aiai a. õë.~ .cE'C EC' i: ;:(I C' (I
SOIL DESCRIPTION
i:::00:'(I C'(J"C¡¡ai'-,- Ul~Uli:C'::ü
õuio.c~-;~::00-10alM
L.
2, ai
""EU! 0.. L.i'":i aioli
a.
~'iii ~.¿i:.. :i Sai ' ..~c~ '!!"C~a. ,g~
C .."
MISC.LAB
RESULTS
Reddish brown Silty SAND, decomposed Granite,damp
SM
-5Boring terminated at 6,0 feet
o
r -10I~cg
..'"00
rf-15
~
ri0Ü f- 20
I
'.'
E0...i
II,. -25~
I
i~it,9,
i
I-30
6Oi0
"
-35 -
HARD, KASUNICH AND ASSOCIATES, INC.
BY: dk I FIGURE NO, l'l
I. r1ro Kr unr~~SSOCi~~nC'. U -t"" 11',y~~ i,t \I
Del Monte Forest Subdivision Spyglass Hil ResortPROJECT NO. M10031.3
I LOGGED BY BSCDATE DRILLED August 2,2010 BORING DIAMETER 6" BORING NO, Ex 12.7
¿ ó
I
Z(1 õ.I" (1 c._ ;: .0.. C. ..
Ec. E '0(1ni i:
;:0 C/ ni C/
r-o.'..'
-.'- . .
~. .'
-
r5-
~ t-10
SOIL DESCRIPTION
i: ..:=0 (1 ~õui ..0:; .(1 ~~C/ ni 0.0 "'E 'ijj
Q ..- lIo i: ''0; _. (1"' :J(1'- ~~
.... o~ 1i ~.- II ,..~II 00 :J (1 ~c. 'õ'Oi: ni -LO o:i :i~::(3 IIM C. 0
SM
Mise,LAB
RESULTS
Orange Brown Silty SAND decomposed Granite,dry
Boring terminated at 3.0 feet
'.
~ r
r _"
"'r,.
~ -15-
f ~
"l
~'~20j
I -
l t
~t25I iI
~'lie
i -30.~u
ri
i- 35 -
HARD, KASUNICH AND ASSOCIATES, INC.
BY: dk I FIGURE NO, ,l ~
flo K! unfJ,£ssocial:\nc.
II i lji1~~iL \
Del Monte Forest Subdivision Spyglass Hil ResortPROJECT NO. M10031.3
DATE DRILLED August 2,2010 BORING DIAMETER 6" BORING NO, Ex 12-7ALOGGED BY BSC
¿.r-..a.Clci
óz Q)
Q) a. Õe.~ .0
E "CE
ra i: ::(J ra
(J
.'
.'
.'
.'.
.'
SOIL DESCRIPTION
i: ..:: 0 Cl ~.. ' ..0:0 OUI ,Cl
~l(J ra 0.0 "'E UIt. ~-; "!o i: '"C¡¡ Cl"' ::Q)'- UI~ ....
ci Co êi ~.-UI 3:0 ~ Q) 'õ"C~(/ ~a.i: ra .Qil off :E~::Ü lIM n. ci
SM
MISC,LAB
RESULTS
-0Orange brown Silty SAND decomposed Granite,dry
-5Boring terminated at 6.0 feet
t -10i.""'"Cl
i
r -15~
r~ü -20
fe
8
I~ -25
IiorL -30i:
I~I
..~C)
-35 -
HARD, KASUNICH AND ASSOCIATES, INC.
BY: dk I FIGURE NO. 'Lf
/' flro Kr uJl~ssoci~~nc,U t LLt~~I~, \Del Monte Forest Subdivision Spyglass Hill Resort
PROJECT NO.
I LOGGED BY MeDATE DRILLED August 4,2010 BORING DIAMETER 6" BORING NO, Ex 12.8
~ó
I
z (! õ.s (! c._:: .0.. C. ..Ea.
E i:Ql el t: ::0(f el
(f
1-0ill'' .'
-
- /.,: .'
~',~,), '')3~!.- ):;
r5.' ;;':J.
1 D-8-1 (
-
~
(.,
~
'i
-10.Q
t1 ?-8-2 (
il ". ,
ï .'r -!
l15,',i: .'0
::.. ,',,; ", P-8-3 ( r::, -.:
~
.'.~:x
f -1
~20:i~Ü,i
I
-
e:
(0...,
I-
i
i L25
t -'"
r;0;¡0r -
, -30is
~'"0
I~i
SOIL DESCRIPTION
i: ..=0 Ql ~.. ' ..0+: OW . Ql
l!~(fei 0.0 ""E ïii0 ~-; lIo i: .i:¡¡ Ql"" ::~i: .... ûí~Ql'- i.. o~~~ 00 ::(!
è:c. 'õi:t: el -It 015 ::~::e3 alM a. 0
SM
SC
MISC,LAB
RESULTS
FiI- Tan Silty SAND, dry, damp
Black Clayey SAND, fine-medium grain, moist, fil
15Black Sandy CLAY, moist, very stiff CL
28
Native - Grey Silty SAND, fine-coarse grain, verymoist, medium dense
SM
Grey black, white Silty SAND, fine to mediumgrain, damp, very dense "weathered Granite"Boring terminated at 16,5
SM 50/6"
~L35 -
I
I BY: dk
¡HARD, KASUNICH AND ASSOCIATES, INC.
I FIGURE NO. 15"
IPLASTICITY CHART
80 /i
70 /I / /
60 ,/I V50
ICH ;e /i
I /z 40r 9/'i
" t- OHiU) 30.:.. / orri '" CL MHI
20 /'~ /I CL
I /i10 V
I. : ."
CL - ML .../ ML1..::..;.:.\.......',.. '.......w.
i /'a ML
I0 10 20 30 40 50 60 70 80 90 100 110 120
ii LIQUID LIMIT (%)i
i PLASTICITY DATAii
Key Sample Depth Natural Plastic Liquid Plasticity Unified Soil. Symbol Number (feet) Water Limit Limit Index Classificationi Content (%) (%) Symbol
W(%)
i .. 12-1-1 6.0 14.4 14.0 38.6 25 CL
I
* 12-2-2 11.0 12.1 12.0 29.8 18 CL
Ii
EÐ 12-3-4 21.0 24.3 24.3 70.6 46 CH
I
i
Ii
i ATTERBERG LIMITS TEST RESULTSDel Monte Forest - Spyglass Hil Resort
Pebble Beach, California
I
SCALE
DRAWN BY: JDDATE August 2010 HARO, KASUNICH & ASSOCIATES, INC.REVISED: GEOTECHNICAL AND COASTAL ENGINEERS
I
116 E.LAKE AVENUE WATSONVILLE, CA 95076JOB NO M10031.3 (831)722-"1475
FIGURE NO, Ii? I '"""~
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16 20 30 40 50 70 140
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Percolation Test Results For Spyglass Hill ResortProject No: M10031.3Date: 8/16/10
By: Hare, Kasunich and Associates
HOLE NO.: EX12-6 TEST DATE: 8/3/10 DRILL DATE: 8/2/10WATER LEVEL AFTER PRE-SOAK: 1.77 ft DEPTH OF BORING: 3.4 feetTESTED BY: TA PERCOLATION ZONE: 1.5 to 3.4 feet
ELAPSED DEPTH TO INCREMENTAL FALL OF PERCOLATION PERCREADING TIME (min) WATER (feet) WATER (inches) RATE (min/inch) (in/hr)
Start a 1,50 0.0 0.0 0.001 30 1.57 0.8 35.7 1.602 60 1,59 0,2 125.0 0.403 90 1.60 0.1 250.0 0.204 120 1.60 0.0 0.0 0.005 150 1.61 0.1 500.0 0.126 180 1.61 0.0 0.0 0.007 210 1.61 0.0 0.0 0.00i: L4U 1.ÖL 0.1 fbU.U U.UI:
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Percolation Test Results For Spyglass Hil ResortProject No: M10031.3Date: 8/19/10
By: Haro, Kasunich and Associates
HOLE NO.: IEX12-6A TEST DATE: 8/18/10 DRILL DATE: 8/2/10WATER LEVEL AFTER PRE-SOAK: 2.57 ft DEPTH OF BORING: 6.2 feetTESTED BY: TA PER COLA TION ZONE: 2.6 to 6.2 feet
ELAPSED DEPTH TO INCREMENTAL FALL OF PER COLA TION PERCREADING TIME (min) WATER (feet) WATER (inches) RATE (min/inch) (in/hr)
Start a 2.57 0.0 0.00 0.001 30 2.57 0.0 0.00 0,002 60 2.57 0,0 0.00 0.003 90 2.57 0.0 0,00 0.004 120 2.57 0,0 0.00 0.005 150 2.57 0.0 0.00 0.006 180 2.57 0.0 0.00 0.007 210 2.57 0.0 0.00 0.00!: :¿4U 2.57 U,U U.UU lJ
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Percolation Test Results For Spyglass Hil ResortProject No: M 1 0031.3Date: 8/16/10
By: Ham, Kasunich and Associates
HOLE NO.: EX12-7 I TEST DATE: 8/3/10 DRILL DATE: 8/2/10WATER LEVEL AFTER PRE-SOAK: DRY DEPTH OF BORING: 3,3 feetTESTED BY: TA PERCOLATION ZONE: 2,3 to 3,3 feet
ELAPSED DEPTH TO INCREMENTAL FALL OF PERCOLATION PERCREADING TIME (min) WATER (feet) WATER (inches) RATE (minlinch) (in/hr)
Start 0 2.30 0.0 0.0 0,01 30 2.50 2.4 12.5 4.82 60 2,93 5.2 5,8 10.43 90 3.09 1.9 15.6 3.84 120 3.30 2.5 RefiIlTo2.97' 11.9 5.05 150 3.16 2.3 13.2 4,66 180 3.29 1.6 19,2 3.27 210 3,33 0.5 RefiIlTo3.10' 62,5 1.0ö ;¿4U j.Lb 1.\: lb.b
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o 30 60 90 120 150 180 210 240Elapsed Time (minutes)
r=LG- 28
Percolation Test Results For Spyglass Hil ResortProject No: M10031.3Date: 8/16/10
By: Hare, Kasunich and Associates
HOLE NO.: EX12-7A TEST DATE: 8/3/10 DRILL DATE: 8/2/10WATER LEVEL AFTER PRE-SOAK: DRY DEPTH OF BORING: 6.3 feetTESTED BY: TA PERCOLATION ZONE: 5.4 to 6.3 feet
ELAPSED DEPTH TO INCREMENTAL FALL OF PERCOLATION PERCREADING TIME (min) WATER (feet) WATER (inches) RATE (min/inch) (in/hr)
Start 0 5.41 0.0 0.0 0.01 30 5.45 0.5 62.5 1.02 60 5.47 0.2 125.0 0.43 90 5.48 0.1 250.0 0.24 120 5,51 0.4 83.3 0.85 150 5.52 0.1 250.0 0.26 180 5.53 0.1 250,0 0.27 210 5,55 0.2 125.0 0.415 :¿4U b.5f U.¿ l¿O.U UA
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