Loading...
HomeMy WebLinkAboutCT 05-16; VILLAGES OF LA COSTA OAKS NORTH; COMPLETION OF GRADING; 2012-09-14GEO'CON INCORPORATED GEOTECHNICAL • ENVLR.ONMENTAL • MATERIALS Project No. 06105-52-27 September 14, 2012 Pulte Homes 27101 Puerta Re1, Suite 300 = Mission Viejo, Cal iforná 92691 Attention: Mr.Dãvid Hutchins • • Subject COMPLETION OF GRADING VThLAES ,!?F LA COSTA - THE OAKS NORTH :NEIGHBORHOOD 3,:4;,:4 T47 (ARLSBAD CALIFORNIA References: 1. Update Geotechniçal Rçpbrt 'Wg of L4. COs The Oaks North, Neighborhoods 3 83 4 and 3 5 Lots 1 throLugh Carlsbad California prepared by Geocon Incorporated dated January 5 2010 (Project No 06 105-52-27) 2 Final Report of Testing and Observation Services Peiformed During Site Grading Villages of La Costa - The Oaks North Neighborhood 3.-j, Lots 1 through 39 Car 1,7 lsbad California prepared by Geocon Incorporated October 30 2007 (Project Nb 06403-52-20). Dear Mr. Hutchins: - In accordance With he request ofCity.of Cadsbãd,-v'eptepâêdthis;!etier to confirm that the'grading. of Lot 47 of the subject development is complete We dpine that the subject building pad has been properly graded and is ready to receive the planned improvements The conclusions and recommendations presented in the referenced update report remain applicable Should you have any questions regarding this letter, or if we may be of further service, please contact the undersigned-at-ydur-tônvénierice. Very truly yours, GEOCON INCORPORATED 7 CEG 1778 AS:SFW:vb (2/del) Addressee 6960 Flanders Drive • San Diego, California 92121-2974 • • Telephone 858.558.6900 0 Fax 858.558.6159 GEOCON INCORPORATED GEOTECHN [CAL . ENVIRON MENTAL .MATERIALS7'' Project No. 06105-52-27 May 18, 2012 PulteHomes 271.0! Puerta Real, Suite 300 Mission Viejo, California 92691 Attention: Mr. David Hutchins . . Subject COMPLETION OF GRADiNG VILLAGES OF LA COSTA - THE OAKS NORTH NEIGHBPRHOOD 34, LOT 40 .CARLSAD, CALIFORNIA .1 .. . References:. 1 Updcite Geotechnical Report Villages of La Costa - The Oaks North Neighborhoods 34 and 3- Lots 1 thiough 83 Carlsbad Califoinia, piepaied by Gebcon Incorpotated, dated,January 5,2010 (Project N0 06105 52-27) 2 Final Report of Testing and Observation m Services Perfored During Site Grading Villages of La Co5ta - The Oaks North hb Neigorhood 3.'5, Lots 1—m 39 Carlsbad California prepared by Geocon Incorpoiated, October 30, 2007 (Project No 06403 52-20) Dear Mr. Hutchins: In accordance with the request of City of Carlsbad; we prepared this letter to confirm that thegrading of Lot 40 of the subject development is complete. We opine t ubj e at the sct building pad has been properly graded and is ready to receive . the planned imrQvèments. The conclusions and recommendations presented in the referenced update report remain applicable. Should you have any questions regarding this letter, or if we maybe of further service, please contact the undersigned at your convenience. Very truly yours, GEOCON iNCORPORATED AU DR AU .1 i /'Soa'd r SADR CEG 1778 00C!"i f 17 7i =IC Shawn Foy Weedon No. 2714 GE 2714 . . . . 4 Ep. 06/30/13° ::d:dressee 6960 Flanders Drive • San Diego, California 92121-2974 • Telephone 858.558.6900 U Fax 858.558.6159 .GEOCON INCORPORATED GEOTECHNICAL.. ENVIRONMENTAL •MATERI'ALS 7 Project No. 06105-52-27 April 24, 2012 Pulte Homes 2.7101Puerta Real, Suite 300 Mission Viejo, California 92691 Attention: Mr David -Hutchins / Subject COMPLETION OF GRADiNG - VILLAGES OF LA COSTA - THE OAKS NORTH NEIGHBORHOOD 3.4; LOT 55 AND LOT 56 CARLSBAD, CALIFORNIA References: 1. Update Geotechnical Report Villages of La Costa - The Oaks North, Neighboi hoods 3.4 and 3 5 Lots] thrugh 83 Carlsbad California, prepared by Geocon Incorporated, dated January 5 2010 (PrdjectNo 06105-52-27). .2. Final Report of Testing and ObsëriatioServices Performed During Site Grading, Villages-of La Costa - The Oaks North, Neighborhood 3.5, Lots I through 39, Carlsbad, Caifornia, prepared by Geocon -Incorporated, October 30, 2007 (Project No. 06403-52-20). Dear Mr. Hutchins: . In accord ance,with the request of City of Carlsbad, we prepared this letter to confirm that the grading of Lots 55 and 56 of the subject development is complete We opine that the building pads have been properly graded and are ready to receive the planned improvements The conclusions and recommendations presented in the referenced updatereport- remain applicable. Sholld you have.an.y questions, regarding this letter, of if we riay be of further service, please contact the undersignd at your convenience. Very truly yours, GEOCON INCORPORATED AL A1778 G ENGINEERIN (3/del) • Addressee urcoI0, H Co No; 2714 Shawn Foy Weedon I Exp. 06/30/13 GE2714 \c \ %c . OF CA 6960 Flanders Drive U San Diego, California 92121.2974 0 TeIephoe 858.558.6900 0 Fax 858.558:6159 AMBERLY AT LA COSTA OAKS NORTH - - (AREAS 3.4 & 3.5) .. rM PHASING EXHIBIT. 84 40 55 B 56 41 54 BO- —%---T 57 LEGEND . V42 C') 58 RS HVWT (9) . 52 59 8A lÀ - . •Ii 44 51 MODELS 50 60 LOT 84 - 45 M 61 7B BO 111 46 49 A 62 - Pad Cert Request area 47 3 Lots 55 & 56, 5-3-12 CO 48 64 1p 5A 6.5 84 ii 66 82 II I',I 81 67 80 68 B 79 69 78 70 6A 77 71 NTS 76 72 - - 7 6B 73 '\ 74 84 P -1' • / 6 ' 85 4B 36 39 1 0 10 51 llI 32 28 27 25:4; /go1e16Th' lB 1 1A 85 3A 3B HUNSAKER PK4SE LOr NUMBERS TOTAL IA 20-22. 38-39 - - 18 23-26. 36-37 - - 24 27-30 - - 28 37-35 34 1-2, 17-19 - - 38 3-4. 74-16 46 5-6, 17-13 48 7-70 54 48. 66. 87-83 :-c 58 67-70 4 54 77-72. 78-80 :5: 68 73-77 5 - 7A 49, 62-65 5 - 78 50-5!, 60-61 4 54 52-53. 38-59 : -. 88 5457 4. 80 ' 40-43 & 47 MOMS 44-46 4 - TOTAL 83 GEOCON . . INCORPORATED GEOTECHNICA.L •ENViRQNMENTAL • MATERiALS Project No. 06105-52-27 March 21, 20 12 Pulte Homes- 27101 Puerta Reals Suite 300 . . . Mission Viejo, California 92691 . ., . Attention: Mr. David Hutchins . . . Subject:.COMPLETION OF GRADING VILLAGES OF LA COSTA -THE OAKS NORTH NEIGHBORHOOD 34, LOTS 41 THROUGH 43 CARLSBAD, CALIFORNIA; References: 1. Update Geotechnical Report tfiilages. of.- La Costcl - The Oaks North, Neighborhoods 3.4 and-3.5, -Lots.1 through 83 Carlsbad California, prepared by Geocon Incorporated, dated January 5, 201 0 (Project No 06,105-52-27). 2 Final Report of Testing and Observation Services Performed During Site Grading - Villages of La Costa - The Oaks North Neighborhood 3 5 Lois 1 through 39 C4rlsbad, California, prepared by Geócon Incorported, October 30, 2007 (Project No. 06403-52-20). Dear Mr. Hutchins: In accordance with the request of City of Carlsbad, we prepared this letter to confirm that the grading of Lots 41 through 43'of the subject development is complete We opine that the building pads have been propetly graded and are ready to receive the planned improvements The conclusions and recommendations presented in the referenced update report remain applicable Should you have any.question regarding this letter, or if we may be of further service, please contact the undersignedat yOur convenience. Very truly yours, GEOCON1NC RPORATED .271 E 06/30113. uu GE 2714 (3/del) Addressee - - - - 6960 Flanders Dri'ie • San Diego, California 92121-2974 • lelepFione 858.558:6900 '• Fax 858.558.6159 GEOCON . INCORPORATED '"" . . ''•" .. . "' .• GEOTECHNICAL • ENVIRONMENTAL. MATERIALS . •.Pioject No. 06105-52-27 March 16 2012 Pulte' Homes 27 101 Puerta Real Suite 300 Mission Viejo California 92691 Attention: Mr. David Hutchins Subject COMPLETION OF GRADING VILLAGES OF LA COSTA L THE OAKS NORTH NEIGHBORHOOD 3:4 .. . LOTS 49 THROUGH 54 AND LOTS 57 THROUGH 65 CARLSBAD, CALIFORNIA' .. . . References 1 Update Geotechnical Report Villages of La Costa - The Oaks North Neighborhoods 3.4 and 3 5 Lots I through 83 Carlsbad California prepared by Geocon Incorporated, .datedlJanuary 5,2010 (ProjectNO. 06105-52-27). 2 Final Report of Testing and Observation Services Performed During Site Grading Villages of La Costa - The Oaks North Neighborhood 3 5 Lots 1 through 39 pre6ated bfGeoconlncoTporated, October: 3.2007 (Project No. 06403-52-20). Dear Mr., Hutchins: ml accordance with :the: request of City of Carlsbad, we prepared :this letter to confirm that the grading . of 'Lots 49 through '54 'd 57 through 65 of the subject devlbpiñnt is complete: .We: Opine that the" building pads have been properly graded and are ready to receive the planned improvements The conclusions and recommendations presented in the referenced update report remain applicable Should you have any questions regarding this letter or if we may be of further service, please contact the undersigned at your convenience. Y ryitruly yours ,: , . • • . ' .'.' 1. • 1. : • ' ' H GEOC • ' ORPORATED. H: :1" , • ;, : ' : 'Shawn Foy Widon GE 2714 (e-mail) Addressee ' , . ' . ...... (3/del) Hunsaker & Associates San Diego • Attention: Mr. David:Blalock. • :. - 6960 Fl (in ders'Drive 0 San Diego California 92121-2974,' • Telephone 858.558.6900 • Fax 858.558.6159 GEOCON INCORPORATED - GEOTECHNICAL • ENVIRONMENTAL. MATERIALS Project No. 06105-52-7 December 22, 2011 Pulte Homes - 27 101 Puerta Real, Spite 300 ,.. Mission Viejo, California 92.691 Attention: Mr.-David 'l-lutch in Subject: COMPLETION OF GRADING VILLAGES OF LA COSTA THE OAKS NORTH N iGHBRI-IOOD 3.5 PHASE 6 LOTS 71 THROUGI-1 80 CARLSBAD, CALIFORNIA References: 1. Update Geotechnical Rej.0rt J"illages of La Costa -The Oaks North, Neighboi hoods 3.4 and 3.5, Lots 1 through 83 Carlsbad California, prepared by Geocon Incoiporated, dated January 5,2010,2008 (Project No 06105 52-27) 2 Final Report of Testing and Obsei va/ion Services Peifoi med During Site Grading, Villages of La Costa - The Oaks North Neighboihood 3 Lots 1 through 39 pre par ed by GeOcon Incorporated, October 30 2007 (Project No. 06403-52-20). Dear Mr. Hutch ins: .- . In accordance with the eqiiest'of City of Ca1rl'sbad, we prepared.this letter to confirimthat the grading of Lots 71 through 80 of the subject development is complete We opme that the building pads have been properly graded and are ready to receive the planned improvements The conclusions and recommendations presented in the referenced update report remain applicable. Should you have any questions regarding this letter, or if we may be of further service, please contact the uindersigned 'at your convenience. ' Very truly yours, GEOCON ORPORATED co 'Shawn Foy Weedon Exp. 06/30 GE 2714 SFW:dmc - (2) Addressee (3/del) Hunsaker & Associates San Diego Attentioul: Mr. David Blalock - 6960 Flanders Drive 0 San Diego, California 92121.2974 . U Telephone 858.558.6900 m Fax 858,558.6159 GE000N INCORPORATED GEOTECHN1CA_L •ENVIRONMENTAL •MATERIALS Project Np. 06105-52-27 December 22, 2011 Pii!te Hoñies - 27101'PuertaReal, Suite 300 Mission Viejo, CãlifOrnia92691 - Attention: Mr. David Hutchins - Subject COMPLETION OF GRADING VILLAGES OF LA COSTA - THE OAKS NORTH NEIGHBORHOOD 35 PHASE 6— LOTS 71 THROUGH 80 CARLSBAD CALIFORNIA References: 1. Uj5date Geotechnicôl Report Viliciges of. La çpstc, - The Oaks North, Neighborhoods 3 4 and h Lots] through 83 Carlsbad California, prepared by Geocon Incoiporated, dated January 5,2010,2008 (Project No. 06105'-52-27). 2 Final Report of Testing and Obsei vation Srvices Peifoi med Din ing Site Grad' Villages of La Costa - The Oaks North Neighborhood 3 5 Lots 1 through 39 prpárd by Geocon 1ncorporated October. 30, 2,007 (Project No. 06403-52-20). Dear Mr. Hutchins: in accordance with the request of City of Carlsbad, we prepared this letter to confirm.thatth grading of Lots 71 through 80 of the subject development is complete We opine that the building pads have been properly graded and are ready to receive the planned im prove ments The conclusions and recommendations presented in the referenced update report iemain applicable Should you have any questions regarding this lettei, or i'f we may be of further service, please contact the undersigned at your convenináe: Very truly yours, GEOCbN •CORPORATED rn 'Shawn Foy We;don GE 2714 SFW:drnc .• (2) • Addressee • (3/del) Hunsaker &Asoëiates San Diego Attention: W. David-Blalock 6960 Flanders Drive . San Diego, California 92121-2974 0 Telephone 858558.6900 0 Fax 858.558.6159 GEO\CON : INCORPORATED GEOT.ECHNICAL.. ENV•IRONMENTALi MATEIA1S Project No. 0610552-27' December 22, 2011 Piilte Homes 27101Puerta Real, Suite 300. . Mission-Viejo, Califdrnia 92691 Attention: Mr. David Hutchins, . Subject: COMPLETION OF GRADING VILLAGES OF. LA COSTA —THE OAKS NORTH. NEIGHBORHOO16; 3.5 PHASE 6— LOTS 71 THROUGH 80 CARLSBAD, CALIFORNIA . References: I Update Geotechnic.al Report Villages of La Costa - The Oaks North,- Neighboi hoods 3 4 and 3--,5, Lots / ihi ough 83 Carl.s bad California, prepared by Geocon Incorporated, dated January 5,2010,2008 (PtojectNo 06105-52 27) 2. Fihal Report of Testing and Obsv4/iqñ Ser)ics Perforned During Site. Grading, Villages of La Costa - The Oaks—North, Neighborhood 3 5 Lots I through 39 - . prepared byGeocon Incorpoiated,. October 30, 2007 (Project No. 06403-52-20). bear Mr. Hutchins: In accordance with the request of City of Carlsbad, we prëpred th is letter to confirm that the grading of Lots 71 through 80 of the subject development is complete We opine that the building pads have been properly graded and are ready to receive the planned impiovements The conclusions and recommendations presented in the referenced update report remain applicable Should you have any questions regarding this letter, or if we may be of further service, please contact the undersigned at your convenience. Very truly your, GEOCON CORPORATED No z7li4 Shawn Foy Weedon . EXp06I3O/13 GE 2714 SFW:dmc (2) . Addressee (3/del) Hunsaker & Associates San Diego Attention: Mr. DavidBlalock 6960 Flanders Drive U San Diego, California 92121-2974 0 TeIephne 858.558.6900 0 Fox 858.558.6159 'S S GEOCON IN,C0RP0RATED EdTECH:NJC.:A'•L •ENVIR'ONMENTAL. MATERIALS .Projeèt No. 06105L5227 May 3,2011 Pulte Homes. : S 27 10 1. Puerta Real, Suite 300 Mission Viejo, California 92691 Attention: Mr. David,-Hutchins S S Subject: VILLAGES. OF..LA'COSTA -THE OAK& NORTH - S NEIGH ORHOOD '3.5. S PHASE 5—LOTS 48,66 THROUGH 70, AND 81 THROUGH 83 CARLSBAD, CALIFORNIA COMPLETION OF'GRADING S References: 1. Update Geotechniéal Report.. Villages of La Costa - The Oaks North, Neighborhoods .3.4 and 3.5, Lots 1 through 83 Carlsbad, California, prepared by Geocon Incorporated, dated January 5,2010, 2008 (Project No. 06105L5227). .2.' Final Report of Testing and Osé,yation Services Perfonned During Site Grading, Villages of la Costa '-.. The Oaks Nortk - Neighborhood, 3.5 Lots 1 through 39, prepared-by Geocoñ Incorporated, October 30,2007 (Project No. 06403-52-20). Dear Mr.' Hutchins:, S 5 5 S •, S S In accordance with the request of-City of Carlsbad, we prepared this letter to confirm that the grading of Lots 48, 66. through 70, and.8 1. through 83 of the subject development is complete. We opine that the building pads have been properly graded and are ready to receive the'.planned improvements The - conclusions and recomrnëndations'presented in 'the referenced update report remain applicable. S 5 Should you hiye any questions regarding this- letter;or-if we rnay'be'of further service, please contact ' the.undersigned at your.convenience Very truly yours, GEOCON CORPORATED' JA W 'aEyW::don GE 2714 Fri (2) Addressee 6960 Flanders Drive' U San Diego; California 92121-2974, 1 Telephone 858.558.6900 U Fax 858.558.6159 G]OCO INcoRPoRATED; GEOTECHNICAL • ENVIRONMENTAL • MATERIALS Project No.06105-52-27 May 3011 PulteHomes 27101 Puerta Real, Suite 300 Mission Viejo, California 92691 - Attention Mr. David Hutchins - Subject VILLAGES OF LA COSTA - THE OAKS NORTH NEIGHBORHOOD 35 PHASE 5—LOTS.-48j. 66 THROUGH 70, AND 81 THROUGH 83 CARLSBAD, CALIFORNIA. COMPLETION OF GRADING ' • • References 1 Update Geotechnical Report Villages of La Costa - The Oaks North Neighborhoods 3 4 and 3;5, Lots 1 through 83 Carlsbad, California, prepared by Geocon Incorporated, datdJanuary 5, 2010,2008 (Project No. 06105-52-27). 2 Final Report of Testing and Observation Services Performed During- Site Grading Villages of La Costa - The Oaks North Neighborhood 35 Lots 1 through 39, prepared by Geocon Incorporated, October 30 2007 (Project No 06403-52-20) Dear Mr. Hutchins: S In accordance with the request of City of Carlsbad, we prepared this letter to confirm that the grading of Lots 48, 66 through 70, and 81 through 83 of the subject development is complete We opine that the building pads have been properly graded and are ready to receive the planned improvements The conclusions and recommendations presented in the referenced update report remain applicable Should you have any questions regarding this letter or if we may be of further service, please contact the undersigned at your convenience.. Very truly yours, GEOCON- ORPORATED- - - Shawn Foy Weedon GE 2714 0610/11 Zo (2) Addressee 6960 Flanders Drive U Son Diego; California 921212974' • TeIephne 858.558.6900 • Fax 858.558.6159 Co-ç GEOCO.N.' INC.O APO RATED - - GEOT.ECHNICAL • ENVIRONMENTAL • MATERIALS Project No. No. 06105-52-27 - March 29,2011' - Pulte Homes - 27101 , Puerta Real, Suite 300 - Mission Viejo, California 92619 . Attention: Mr. David-Hutchins . . Subject: VILLAGES OF LA COSTA— THE OAKS NORTH - NEIGHBORHOQD3.5 - PHASES 3 AND 4, LOTS 1 THROUGH 19 CARLSBAD, CALIFORNIA COMPLETION OF GRADING . -. & References: 1. Update Geotechnical Report Villages of La Costa - - The Oaks North, -, . Neighborhoods 3.4 and 3.5, Lbt, 1 through 83 Carlsbad, California, prepared by Geocon -Incorporated, dated-January 5, 20.10, 2008 (Project No. 06105-52-27).. 2. Final Report of Testing and- Obseiyation Services Performed During Site Grading, - Villages of La Costa - The Oaks Nprthr Neighborhood 3:5, Lots - 1 through 39, -• prepatred by Geocon-Incorporated, October 30,'2007 (Project No. 06403-52-20). DearMr. Hutchins: In accordance with the request of City of Carlsbad, we prepared this letter to confirtit that the grading of Lots I. through- 90f the subject development iscomplete. We oine that the buildingpads have been properly graded and are ready •to receive the. planned , improvements. The conclusions and recommendations presented in the referenced update repoft remain applicable. Should you have any questions regarding this letter, or if we may be of further service, please contact • the undersigned at-your convenience. • - . - - • Very truly yours, . - GEOCON INCORPORATED . .• -• t4 VV Michael C.Ertwine Shawn Foy Weedon CIO Senior Staff Geologist GE 2714. Exo.06i3' Ze MCE:SFW:dmc 61 '0 OF 0 (2/del) Addressee 6960 Flanders Drive • San Diego, California 92121-2974 • Telephone858.558.6900 • Fax 858.558.6159 GE ON' INCORPORATED GEOTEC.HNICAL •EN.VIRONM-ENTA1U 'MATERIA.LS ' Project No. 06105-52727 March 29,2011 Pulte Homes 27101 Puerta Real, Suite 300 . . Mission Viejo, California 92619 . . Attention: Mr. David Hutchins . . Subject: VILLAGES OF LA COSTA - THE OAKS NORTH NEIGHBORHOOD 3.5 - PHASES 3 AND 4, LOTSI THROUGH 19 CARLSBAD, CALIFORNIA . . COMPLETION OF GRADING'. . References 1 Update Geotechnical Report Villages of La Costa - The Oaks North Neighborhoods 3.4 and 3 5 Lots 1 through 83 Carlsbad California, prepared by Geocon 'Incorporated, dated January 5, 20,10, 2008. (Project No. 06105-52-27). 2. FinOl Report of Testing and' Observation Services Performed During Site Grading, Villages of Là Costa - The Oaks North,- -.Neighborhood 3.5, Lots 1 through 39, preáred'by Geocon Incorporated, October'30, 2007 (Project No. 06403-52-20). ' Dear M:Hutchins: . In accordance with the request of City, of Carlsbad, we prepared this letter to confirm that the grading of L6s .1 through. 19 of the subject 'developient is'cothplete. We opine that the building"pads have been properly graded • 'and ar'e ready to receive the planned. iñiprovements. The' conclusions and recommendations presented in the referenced update report remain applicable. Should you have any questions regarding. this, .letter, ,or' if we may be of further service, please contact the undersigned at your convenience. ''• - • 'Very truly' yours, ' - rn - • GEOCON INCORPORATED • MichaCErtwme 'Shawn Foy Weedon No. 2714 CC 401 (2./del) Addressee 6960 Flanders Drive' U Son Diego, California 92121-2974 0 TèIephne 858,558.6900 0 'Fax 858.558.6159 GEOCON INCORPORATED GE'O:TECHNIC'A'iu E N V I Project No. 06105-52-27 February 28, 2011 Pulte Homes 27101 Puerta Real, Suite 300 Mission Viejo, California 92619 Attention: Mr. David Hutchins R ONMEN'.TA L• MATER lA,LS1' /1jioc , -. .Mi°&tai/4c, Subject: VILLAGES OF LA COSTA - THE OAKS NORTH NEIGHBORHOODS 3.4 AND 3.5 " CORTE PANORAMA = STATIONS 23±78 THROUGH 27+84 SITIO, DESTINO - STATIONS 10+00 THROUGH 16+00 CORTE FORTUNA - STATIONS 9+77 THROUGH 16+00 CARLSBAD, CALIFORNIA - PAVEMENT RECOMMENDATIONS Dear Hutchins: - - - In accordance with our proposal dated December21, 2009 .and discussion with you in the preconstruction meeting, we obtained subgrade soil samples from the subject roadways After collection, we performed Resistance Value (R-Value) tests on the samples Based on conversations with the project civil engineer from Hunsaker and Associates San Diego Incorporated, we understand that a Traffic Index (TI) o15.0 has been assigned to the subject roadways. Subgrade soil varies from sandy clay to silty to clayey sand with gravel, and typically exhibits low to high R-Value characteristics We performed the laboratory R-Value tests in accordance with ASTM D 2844 (California Test Method No 301) The results of the laboratory tests and the corresponding roadway station numbers are presnted in Table I. Based on laboratory testing and the TI provided, we calculated the pavement sections in accordance with California Department of Transportation Highway Design Manual and the City of Carlsbad Minimum Structural Standard GS-17 The pavement sections and the Traffic Index are presented in Table II Calculations for the pavement sections are presented in Figure 1 Final pavement sections should be obtained frOm the City-of Carlsbad., • - Asphalt concrete should conform to. Section 203-6,6f the,-StandardSpec4fiiations for Public Works Construction (Greenbook) Class 2 aggregate base materials should conform to Section 26-1 02A of the Standard Specifications of the State of Calfornia, 'Department of Transportation '(Caltrans) or approved equivalent. Additionally, materials should conform to City of Carlsbad specifications. Prior to placing base materials for roadways and curb/gutter, the upper 12 inches of subgrade should be scarified, moisture conditioned as necessary, and compacted to a dry density of at least 95 percent of the laboratory maximum dry density in accordance with ASTM D 1557. The upper 12 inches of 6960 Flanders Drive 0 San Diego, California 92121-2974 'I Telephone 858.558.6900 U Fax 858.558.6159 subgrade beneath areas to receive concrete sidewalks should be compacted to a dry density of at least 90 percent of the laboratory maximum dry density near to slightly above optimum moisture content. The base materials should be compacted to a dry density of at least 95 percent of the laboratory maximum dry density near to slightly above optimum moisture content. The asphalt concrete should be compacted to a density of at least 95 percent of the laboratory Hveem density in accordance with ASTM D 2726. - The performance of asphalt concrete pavement is highly dependent on providing positive surface drainage away from the edge of the pavement. Ponding of water on or adjacent to the pavement will likely result in saturation of the subgrade materials and subsequent pavement distress. To reduce the- occurrence for such situations, a 'minimum drainage gradient of at least 1 percent should be maintained for' pavement surfaces. Drainage from landscaped areas should be directed to controlled drainage structures. Should you have any questions regarding this correspondence, or if we may be of further service, please contact the undersigned at your convenience. Very truly yours, GEOCON INCORPORATED Michael C. Ertwine Senior Staff Geologist 4 dr 778 . A~~ Shawn Foy Weedon GE 2714 MCE:AS:SFW:dmc (3/del) Addressee (e-mail) Hunsaker & Associates Attention: Mr. David Blalock #)I?i. SAD 6 ALI R \ IL No. 17,78 1.0 CERTIFIED —I * ENGINEERING * GEOLOGIST ç3.,QFESS/0 No.2714 Exp.06/30/ii OF C City bad SHOP D'7VV:'y.. EVIEW The approva! by the. Engineer jf any shop or work drawing (or of any drawing of the Contractors plant or equipment) shall not in any way be deemeO to rekase the Contractor from full responsibility for complete ani eccurate performance of the Work in accordance with the Cc•ntc Drawings and Specifications. Neither shall such app;'ova1 reean the Contractor form any liability placed upon him by any provision in the Form of Contract. Li .......REJECTED/RESUBMIT O .......AMEND AND RESUBMIT o.........MAKE CORRECTIONS NOTED NO EXCEPTIONS TAKEN Date Project No. 06105-52-27 ' -2- February 28, 2011 "S TABLE SUMMARY OF R-VALUE TEST RESULTS ASTM 0 2844-01 (CALIFORNIA TEST METHOD NO. 301) Sample Number Location R-Value R-1 Corte Panorama - Stations 23+78 through 25+50 8 R-2 - Corte Panorama - Stations 25+50 through 27+84 6 R-3 Sitio Destino - Stations 10+00 through 13+50 30 R-4 Sitio Destino - Stations 13+50 through 16+00 39 R-5 Corte Fortuna - Stations 9+77 through 13+00 33 R-6 Corte Fortuna - Stations 13+00 through 16+00 36 TABLE II PAVEMENT SECTION RECOMMENDATIONS - Location Traffic Index (T R-Value Asphalt Concrete (inches) 'Class 2 Aggregate Base* (inches) Corte Panorama - Stations 23+78 through 25+50 . 5.0 8 4.0 7.0 Corte Panorama - Stations 25+50 through 27+84 5.0 6 4.0 8.0 1Sitio Destino - Stations,10+00 through' 13+50 5.0 30 4.0 4.0 'Sitio Destino - Stations 13+50 through 16+00 5.0 39 4.0 4.0 Corte Fortuna - Stations 9+77 through 13+00 . 5.0 33 4.0. . 4.0 Corte Fortuna - Stations 13+00 through 16+00 5.0 36 4.0 4.0 *Or approved equivalent. Project No. 06105-52-27 February28,2011 FIGURE PAVEMENT SECTION CALCULATIONS FOR LA COSTA OAKS NORTH - NEIGHBORHOOD 3.4 AND 3.5 Corte Panorama - Stations 23+75 through 25+50 Use subgrade R-Value = 8.0 Traffic Index (TI) = 5.0 Methodology = Caltrans Highway Design Manual Section 608.4 Safety Factor = 0.2 - Applied to Asphalt Concrete (AC) GE for AC = (0.0032)(5.0)(100-78.0)+0.2 = .55 feet from Table 608.413 Highway Design Manual GE = .55 feet for AC yields actual thickness = 2.65 inches Use 4.0 inches of AC - City Minimum GE for 4.0 inches of AC = .83 feet GE for base = (0.0032)(5.0)(100- 8.0) - .83 = .64 feet from Table 608.4B Highway Design Manual with GF for Class 2 base = 1.1 Base thickness = 6.97 inches Use base thickness = 7.0 inches Design Street Structural Section Asphalt Concrete Thickness = 4.0 inches. Class 2 Aggregate Base Thickness 7.0 inches. Corte Panorama - Stations 25+50 through 27+84 Use subgrade R-Value= 6.0 Traffic Index (TI) = 5.0 Methodology = Caltrans Highway Design Manual Section 608.4 Safety Factor = 0.2 Applied to Asphalt Concrete (AC) GE for AC = (0.0032)(5.0)(I00-78.0)+0.2 =.55 feet from Table 608.4B Highway Design Manual GE = .55 feet for AC yields actual thickness = 2.65 inches Use 4.0 inches of AC - City Minimum GE for 4.0 inches of AC =.83 feet GE for base = (0.0032)(5.0)(I00- 6.0) - .83 = .67 feet from Table 608.4B Highway Design Manual with GF for Class 2 base = 1.1 Base thickness = 7.32 inches Use base thickness = 7.5 inches Design Street Structural Section Asphalt Concrete Thickness = 4.0 inches. Class 2 Aggregate Base Thickness = 8.0 inches Project No. 06105-52-27 February 28, 2011 FIGURE 1 (Continued) PAVEMENT SECTION CALCULATIONS FOR LA COSTA OAKS NORTH- NEIGHBORHOOD 3.4 AND 3.5 Sitio Destino - Stations 10+00 through 13+50 Use subgrade R-Value = 30.0 - Traffic Index (TI) = 5.0 Methodology = Caltrans Highway Design Manual Section 608.4 Safety Factor = 0:2 - Applied to Asphalt Concrete (AC) GE for AC = (0.0032)(5.0)(100-78.0)+0.2 = .55 feet from Table 608.4B Highway Design Manual GE = .55 feet for AC yields actual thickness = 2.65 inches Use 4.0 inches of AC - City Minimum GE for 4.0 inches of AC = .83 feet GE for base = (0.0032)(5.0)(100-30.0) - 83 = .29 feet from Table 608.413 Highway Design Manual with GF for Class 2 base = 1.1 Base thickness = 3.13 inches Use base thickness = 370 inches Design Street Structural Section Asphalt Concrete Thickness = 4.0 inches. Class 2 Aggregate Base Thickness = 4.0 inches, City of Carlsbad minimum. Sitio Destino - Stations 13+50 through 16+00 Use subgrade R-Value = 39.0 Traffic Index (TI) 5.0 Methodology = Caltrans Highway Design Manual Section 608.4 Safety Factor = 0.2 - Applied to Asphalt Concrete (AC) GE for AC (0.0032)(5.0)(I00-78.0)±0:2 = .55 feet . 0 from Table 608.4B Highway Design Manual GE = .55 feet for AC yields actual thickness = 2.65 inches Use 4.0 inches of AC - City Minimum - GE for 4.0 inches of AC = .83 feet GE for base = (0.0032)(5.0)(I00-39.0) - .83 = .14 feet from Table 608.4B Highway Design Manual with GF for Class 2 base = 1.1 Base thickness = 1-.56 inches - Use base thickness = 4-4 inches Design Street Structural Section. Asphalt. Concrete Thickness = 4.0 inches. Class 2 Aggregate Base Thickness = 4.0 inches, City of Carlsbad minimum. Project No. 06105-52-27 0 0 February 28, 2011 FIGURE 1 (Continued) PAVEMENT SECTION CALCULATIONS FOR LA COSTA OAKS NORTH - NEIGHBORHOOD 3.4 AND 3.5 Corte Fortuna - Stations 9+77 through 13+00 Use subgrade R-Value = 33.0 Traffic Index (TI) = 5.0 Methodology = Caltrans Highway Design Manual Section 608.4 Safety Factor = 0.2 - Applied to Asphalt Concrete (AC) GE for AC = (0.0032)(5.0)(I00-78.0)+0.2 = .55 feet from Table 608.413 Highway Design Manual GE = .55 feet for AC yields actual thickness = 2.65 inches Use 40 inches of AC - City Minimum GE for 4.0 inches of AC = .83 feet GE for base = (0.0032)(5.0)(100-33.0) - .83 = .24 feet from Table 608.413 Highway Design Manual with GF for Class 2 base = 1.1 Base thickness = 2.60 inches Use base thickness =24 inches Design Street Structural Section *** Asphalt Concrete Thickness = 4.0 inches. Class 2 Aggregate Base Thickness =4.0 inches, City of Carlsbad minimum. Corte Fortuna - Stations 13+00 through 16+00 Use subgrade R-Value = 36.0 Traffic Index (TI) = 5.0 Methodology = çaltrans Highway Design Manual Section 608.4 Safety Factor = 0.2 - Applied to Asphalt Concrete (AC) - . GE for AC = (0.0032)(5.0)(100-78.0)+0.2 = .55 feet from Table 608.4B Highway Design Manual GE = .55 feet for AC yields actual thickness = 2.65 inches Use 4.0 inches of AC - City Minimum GE for 4.0 inches of AC =.83 feet GE for base = (0.0032)(5.0)(100-36.0) - .83 = .19 feet from Table 608.413 Highway Design Manual with GF for Class 2 base = 1.1 Base thickness = 2.08 inches . Use base thickness = 2.0 inches Design Street Structural Section Asphalt Concrete Thickness = 4.0 inches. S Class 2 Aggregate Base Thickness = 4.0 inches, City of Carlsbad minimum. Project No. 06105-52-27 February 28, 2011 GE000N INCORPO R A TED GEOTECH'JICAL CONSULTANTS 04) Project No. 06105-52-27 January 11, 2011 Pulte Homes 27101 Puerta Real, Suite 300 Mission Viejo, California 92619 Attention: Mr. David Hutchins Subject: VILLAGES OF LA COSTA - THE OAKS NORTH NEIGHBORHOODS 3.4 AND 3.5 LOTS 20 THROUGH 26 AND LOTS 36 THROUGH 47 CARLSBAD, CALIFORNIA COMPLETION OF GRADING References: 1. Update Geotechnical Report Villages of La Costa - The Oaks North, Neighborhoods 3.4 and 3.5, Lots 1 through 83 Carlsbad, California, prepared by Geocon Incorporated, dated January 5, 2010, 2008 (Project No. 06105-52-27). Final Report of Testing and Observation Services Performed During Site Grading, Villages of La Costa - The Oaks North, Neighborhood 3.4, Lots 40 through 83, prepared by Geocon Incorporated, September 10, 2007 (Project No. 06403-52-20). Final Report of Testing and Observation Services Performed During Site Grading, Villages of La Costa - The Oaks North, Neighborhood 3.5, Lots 1 through 39, prepared by Geocon Incorporated, October 30, 2007 (Project No. 06403-52-20). Dear Mr. Hutchins: In accordance with your request and the City of Carlsbad, we prepared this letter to confirm that Lots 20 through 26 and Lots 36 through 47 of the subject development are complete. We performed testing and observation services during the original grading operations as presented in the referenced reports. The lots have recently been processed by removing vegetative growth, spinning the lots, moisture conditioning as necessary, and recompacting the upper 12 to 24 inches of soil. We observed the compaction procedures and performed in-place density tests to evaluate the dry density and moisture content of the fill material. We performed in-place density tests in general conformance with ASTM Test Method D 6938. Table I presents the results of the in-place dry density and moisture content tests. Table II presents laboratory tests selected from the referenced report. In general, the in- place dry density test results indicate that the fill soil has a dry density of least 90 percent of the laboratory maximum dry density near to slightly above optimum moisture content at the locations tested. From a geotechnical engineering standpoint, earthwork operations were performed in substantial conformance with the referenced report and the building pads have been properly graded to receive 6960 Flanders Drive • San Diego, California 9212I-974 I Telephone (858( 5586900 0 Fax (858) 558-6159 the planned improvements. The conclusions and recommendations presented in the referenced reports remain applicable for the development of the project. Should you have any questions regarding this letter, or if we may be of further service, please contact the undersigned at your convenience. Very truly yours, GEOCON INCORPORATED IV L- Michael C. Ertwine Shawn Foy Weedon Senior Staff Geologist GE 2714 (4) Addressee No. 2714 (email) Pulie Homes Job Site Trailer TABLE I SUMMARY OF FIELD DENSITY TEST RESULTS Elev. Plus Field Field Field Reqd. or 3/4" Adj. Adj. Dry Moist. Rel. Rel. Depth Cue Rock MDD OMC Dens. Cont. Comp. Comp. Test No. Date Location (1) No. (%) (pcf) (%) (pcf) (%) (%) (%) RG I 01/10/I1 Unit 3.4; Lot 47 RG 2 01/10/11 Unit 3.4; Lot 46 RG 3 01/10/11 Unit 3.4; Lot 45 RG 4 01/10/11 Unit 3.4; Lot 44 RG 5 01/10/11 Unit 3.4; Lot 43 RG 6 01/10/11 Unit 3.4; Lot 42 RG 7 01/10/11 Unit 3.4; Lot 4l RG 8 01/10/11 Unit 3.5; Lot 36 RG 9 01/10/11 Unit 3.5; Lot 37 RG 10 01/1 0/1 1 Unit 3 .5 ; Lot 38 RG 11 01/10/1I Unit 3.5; Lot 39 RG 12 01/11/11 Unit 3.5; Lot 20 RG 13 01/11/11 Unit 3.5; Lot 21 RG 14 01/11/11 Unit 3.5; Lot 22 RG 15 01/1 1/1 1 Unit 3.5;Lot23 RG 16 01/11/11 Unit 3.5; Lot 24 RG 17 01/11/11 Unit 3.5; Lot 25 RG 18 01/11/11 Unit 3.5; Lot 26 510 18 20 143.5 6.2 133.7 9.0 93 90 504 18 20 143.5 6.2 131.2 8.5 91 90 498 18 10 141.2 6.9 130.6 9.7 92 90 492 18 20 143.5 6.2 131.0 8.4 91 90 486 18 30 145.9 5.5 136.7 7.9 94 90 480 18 30 ------------------------------------------------------------------------------------------------------------------------------------------------------------------ 145.9 5.5 132.1 6.3 91 90 474 18 20 143.5 6.2 131.7 9.0 92 90 536 18 20 143.5 6.2 131.7 9.0 92 90 537 18 20 143.5 6.2 133.3 8.4 93 90 538 18 20 143.5 6.2 131.3 8.7 91 90 538 18 20 ------------------------------------------------------------------------------------------------------------------------------------------------------------------ 143.5 6.2 130.2 7.1 91 90 539 18 10 141.2 6.9 127.8 9.4 91 90 538 18 10 141.2 6.9 127.3 8.0 90 . 90 538 18 10 141.2 6.9 131.3 7.4 93 90 537 18 10 141.2 6.9 130.2 8.8 92 90 537 18 20 ------------------------------------------------------------------------------------------------------------------------------------------------------------------ 143.5 6.2 130.7 9.3 91 90 536 18 10 141.2 6.9 131.4 8.8 93 90 536 18 10 141.2 6.9 127.4 9.6 90 90 Project No. 06105-52-27 January 11, 2011 TABLE I EXPLANATION OF CODED TERMS - TEST SUFFIX A, B, C,... : Retest of previous density test failure, following moisture conditioning and/or recompaction. - STRIKE-OUT Fill in area of density test failure was removed and replaced with properly compacted fill soil. - PREFIX CODE DESIGNATION FOR TEST NUMBERS RG - REGRADE - CURVE NO. Corresponds to curve numbers listed in the summary of laboratory maximum dry density and optimum moisture content test results table for selected fill soil samples encountered during testing and observation. - ROCK CORRECTION For density tests with rock percentage greater than zero, laboratory maximum dry density and optimum moisture content were adjusted for rock content. For tests with rock content equal to zero, laboratory maximum dry density and optimum moisture content values are unadjusted. - TYPE OF TEST SC: Sand Cone Test (ASTM D 1556) NU: Nuclear Density Test (ASTM D 6938) OT: Other - ELEVATION/DEPTH Test elevations/depths have been rounded to the nearest whole foot. Project No. 06105-52-27 January 11, 2011 TABLE II SUMMARY OF LABORATORY MAXIMUM DRY DENSITY AND OPTIMUM MOISTURE CONTENT TEST RESULTS ASTM D 1557 Sample No. Description Maximum Dry Density Optimum Moisture Content I (pcf) (% dry weight) 18 Light reddish brown, Silty to Clayey, fine to coarse SAND 138.9 7.6 Project No. 06105-52-27 January 11, 2011 'GEOCON INCORPORATED S GE .OTECHNICAL.ENVIRONMENTA1UMATERIALS7 Project No: 06105-5227 January 11, 2011 Pulte Homes 27101 -Püerta Real, Suite 300 Mission Viejo,* California 92619 - Attention: Mr. David Hutchins Subject: VILLAGES OF LA COSTA - THE OAKS'NORTH NEIGHBORHOODS 3.4 AND 3.5 LOTS 20 THROUGH 26 AND LOTS 36.THROUGH 47 CARLSBAD, CALIFORNIA COMPLETION OF GRADING References: 1. Update Geotechnical Report Villages of La. Costa - - The Oaks North, Neighborhoods .14 and 3.5; Lots 1 through 83 Carlsbad, California, prepared by Geocon Inorporated, dated Jàñuàry 5, 2010, 2008 (Project No. 06105-52-27). Final Rep prt ofsTesting and Obs ation-Seivices Performed During Site Grading, Villages of La Costa The Oaks North, Neighborhood 3.4, Lots 40 through 83, prepared by Geocon Incorporated;. September 10, 2007(Project No. 0640352-20). Final. Report of Testing and Observation Services Perforthed During Site Grading, - Villages of liz Costa - The Oaks- Northç Neighborhood 3.5, Lots 1 through 39, prepared by Geocon Incorporated, October 30, 2007 (Project No. 06403-52-20). Dear Mr. Hutchins: S In accordance with your request and City' of Carlsbad, we prepared this letter to confirm that Lots '20. through 26 and Lots 36 'through 47 of The, subject development are complete. We performed testing and observation services during the original grading operations as presented in-the referenced reports The lots have recently been processed by removing vegetative growth spinning the lots, moisture conditioning as necessary, and recompacting the upper 12 to 24 inches of soil We observed the compaction procedures and' performed iI-place density tests to evaluate the dry density and moisture content of the fill material We performed in-place density tests in general conformance with ASTM Test Method D 6938. Table I presents the results of the in-place dry density and moisture content tests.'Table llpresents láboratory'tests selected from the referenced report. In general, the in- place dry density test results indicate that the fill soil has a dry density of least 90 percent of the laboratory maximum dry density near to slightly àbov optimum moisture content at the locations tested. From a geotechnical engineering, standpoint, earthwork -operations were performed in substantial conformance with the referenced report and the. buildmgpads have been properlygraded to receive 6960 Flanders Drive 0 San-Diego, California 92121-2974 U Telephone 858:558.6900 U Fax 858.558.6159 the planned improvements. The conclusions and recommendations presented in the referenced reports remain applicable for the development of the project. Should you have any questions regarding this letter, or if we may be of further service, please contact the undersigned at your convenience Very truly yours GEOCON INCORPORATED Michael C. Ertwine • Shawn Foy Weedon Senior Staff Geologist GE 2714 ;::l Addressee : Homes Job Site Trailer No 2 14 Attention: Mr., Danny Manibusan Project No 061055227 2 January 11, 2011 TABLE _. SUMMARY OF FIELD DENSITY TEST RESULTS Elev. Plus Field Field Field Reqd. or 3/4 Adj. Adj. Dry Moist. Rel. Rel. Depth Curve Rock MDD oMC Dens. Cont. Comp. Comp. Test No. Date . Location (ft) No. (°1) (pcf) (%) (pci) (%) (%) (%) RG 1 01/10/11 Unit 3.4; Lot 47. 510 18 20 ,1435 62 1337 90 93 90 RG 2 01/10/11 Unit 3.4; Lot 46 504 18: 20 143.5 6.2 131.2 8.5 . 91. 90 RG 3 01/10/I1 Unit 3.4; Lot 45 - 498 18 10 141.2 6.9 130.6 9.7 92 90 RG 4 01/10/11 Unit 3.4; Lot 44 . 492 18 20 143.5 6.2 131.0 8.4 91 90 RG 5 01/10/11 Unit 3.4; Lot 43 486 18 30 145.9 55 136.7 7.9 94 90 RG 6 01/10/11 Unit 3.4; Lot 42 . 480 18 - 30. 145.9 5.5 132.1 6.3 91 90 RG 7 01/10/11 Unit 3.4; Lot 41 474 18 20 1435 62 1317 90 92 90 RG 8 01/10/11 Unit 3.5; Lot 36 . 536 18 20 . 143.5 ,6.2 131.7. 9.0 92 90 RG 9 01/10/11 Unit 3.5; Lot 37 . . . . . 537 18 20 143.5 6.2 133.3 8.4 93 90 .RG 10 01/10/11 Unit 3.5; Lot 38 . . 538 18 20 143.5 6.2 131.3 8.7. - 91 90 RG 11 01/10/11 Unit 3.5; Lot 39 538 18 20 1435 62 1302 71 91 90 RG 12 01/11/11 Unit 3.5; Lot 20 - 539 18 10 1412 69 1278 94 91 90 RG 13 - 01/11/11 Unit 3.5; Lot 21. . 538 18 10. 141.2 - 6.9 127.3 . 8.0 90 90 RG 14 01/11/11 Unit 3.5; Lot 22 538 18 10 . 141.2 6.9 131.3 7.4 93 90 RG 15 01/11/11 Unit 3.5; Lot 23 . 537 18 10 141.2 6.9 130.2 . 8.8 '92 90 ' RG 16 01/11/11 Unit 3.5; Lot 24 . . . . 537 . 18, 20 143.5- 6.2 130.7 9.3 . 91. 90 RG 17. 01/11/11 Unit 3.5; Lot 25 - 536 18 10 141.2 6.9 131.4 8.8 93 90 ' RG 18 01/11/11 Unit 3.5; Lot 26 . 536 18 10 141.2 6.9. 127.4 9.6 , 90 , 90 Project No. 061055227 January 11, 2011 TABLE I' S EXPLANATION OF CODED TERMS -TEST SUFFIX A, B, C,... : Retest of previous density test failure, following moisture conditioning and/or recompaction. - STRIKE-OUT - S Fill in area of density test failure was removed and replaced-with properly compacted fill soil. PREFIX CODE DESIGNATION FOR TEST NUMBERS RG - REGRADE -CURVE NO. Corresponds10 curve numbers listed in the summary of laboratory maximum dry density and optimum moisture content test results table for selected fill soil samples encountered during testing and observation. -. - ROCK CORRECTION 0 For density tests with rock percentage greater than zero, laboratory maximum dry density and optimum moisture content were adjusted for rock content. For tests with rock content equal to zero, laboratory maximum dry density and optimum moisture content values are unadjusted. -TYPE OF TEST ' SC: Sand Cone Test (ASTM D 1556) S NU: Nuclear Density Test (ASTM D 6938) OT: Other .• S S S • - - ELEVATION/DEPTH Test elevations/depths have been rounded to the nearest whole foot. S - • • TABLE 11 SUMMARY OF LABORATORY MAXIMUM DRY DENSITY AND OPTIMUM MOISTURE CONTENT TEST RESULTS - - / ASTM D 1557. S I Sample No. Description' Maximum Dry Density (pet) Optimum Moisture Content I (% dry weight) I - 18 ; Light reddish brown, Silty to Clayey, fme to coarse SAND 138.9 - I 7.6