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Home My WebLink AboutCT 77-02; Woodridge; Soils Reports; 1982-04-02.- 3467 KurU SlrM . Sail'DigQO. Calbfn~a 92110 714-224.2911 April 2, 1982 Project No. 592073-FC03 .--_ Woodwti‘-d4lyde Consultants c-r 7-72 Broadmoor Homes, Inc. 3911 Sorrento Valley Boulevard Suite B San Diego, California 92121 Attention: Mr. Ron Van Daele COMPACTSON TEST RESULTS - WOODRIDGE UNITS 2 THROUGH 5 STORM DRAIN, SEWER, WATER, COMMON UTILITIES BACKFILL AND SUBGRADE AND BASE TEST CARLSBAD, CALIF'ORNIA - Gentlemen: - Attached are the results of field density tests performed at the subject site at your request and under the direction of Messrs. Mike Ladala and Ron Van Daele. These tests were performed on the dates and at the locations indicated; they were performed in accordance with ASTM Test Method No. D1556- 64. Also attached are the results of laboratory compaction tests performed in accordance with ASTM Test Method No. D1557- 70A on samples of the materials used for fill and backfill. To our knowledge, these tests represent the relative compac- tion and water contents at the locations tested. Our opinions as to the relative compaction, water content, or suitability of the fill in areas not tested will be expressed only where we have observed the placement of such fill, and we are satis- fied that construction procedures followed in untested areas are represented by the areas tested. - Very truly yours, WOODWARD-CLYDE CONSULTANTS f Richard P. While R.E. 21992 - RPW/EHP/rs Attachments (5) -. Consulting Engineers. Geolowsts and Environmental Scienllsls OfIces in Other Prwpal CWS - -;- r^\ , COMPACTION TEST RESdLTS --&a NhMC WOODRIDGE PHASE II UNIT #2 D~rcRwonrrD 4/2/82 Jam Nuwocr 592072-~2 (STORM DRAIN BACKFILL) I* Drruccw+nc~ APRIL 7, 1981 THROUGH Ai'RIL 8, 1981 r~cr SD-1 01 SD-l l)olDnlu nm.0 -TORT UUTlvl YTD mt -Dr ucmmw SURFACE 00"lDwi un*mT uwm111 colc.",oY ow*DaD OF SUTWI. a? UC sorw DWm. hPR7 SD-1 LOT 66A WEST END -4' 13.0 113.9 123.0 92 -_ SD-2 " II I * -2' 12.3 116.2 123.0 94 SD-3 LOT 6611 CENTER SURFACE 13.6 113.0 123.0 91 eAPR8 SD-4 I LOT 66B SOUTH END -4' 13.0 111.1 121.0 91 - SD-5 LOT 53 -2' 11.1 110.4 121.0 91 SD-6 LOT 66B NORTH END SURFACE 13.0 112.8 123.0 91 - - _- - - dm S/25/81 . Woochard-Clyde Ccmsuttants e CD*‘c,vl*S I”CI*lr.. ClOlb‘I‘.S .*o ,e..l.O.I”,U1.L .Co,*lllll - - I COMPACTION TEST RESULTS _. Jar N&MR WOODRIDGE PHASE II, UNIT 2 Jom Nuw~rr 592072-PC02 (SEWER TRENCH BACKFILL) -- D*~=*Covm~o MARCH 31, 1981 THROUGH APRIL 6, 1981 DAlCRE?OWEO 4/2/82 hot SW-1 ov SW-1 YTL - MAR 31 - - APRl - -. APR 2 -- APR 3 lmLT OLTLLT LQuno* *“Y.‘” 01 SW-1 HOSP WAY, OPP. LQT 36 -4' 13.6 115.9 123.0 SW-2 " " (I II 46 -2' 13.0 116.6 123.0 SW-3 .I " " @I 45 SURF. 12.3 118.3 123.0 SW-4 * II " " 65 -4" 11.7 118.3 123.0 SW-5 SW-6 SW-7 SW-8 HOsP WAY, OPP. WT 65 PRIVATE STREET, OPP. LOT 44 PRIVATE STREET, OPP. UYT 42 PRIVATE STREET, OPP. IOT 43 SW-9 IDT 46 -6' 11.7 115.9 121.0 SW-10 LOT 48 -3' 13.6 115.1 12.30 SW-11 L 47 SURF. 13.0 113.6 121.0 SW-12 SW-13 SW-14 PRIVATE STREET, OPP. IDT 65 PRIVATE STREET, OPP. LOT 63 PRIVATE STREET, OPP. I IDT 64 SW-15 SW-16 SW-17 . SW-18 PRIVATE STREET, OPP. Len 66A PRIVATE STREET, OPP. I&T 58 PRIVATE STREET, OPP. LOT 61 PRIVATE STREET, OPP. IDT 60 SURFACE SURF. -4' -2' SURF. -4' -2' SURF. -4' -4' -2' SURF. Nolwruu oomrr l n-m. nao -BITT UP UDODAIODY UITlrrl -.lW km”NOso” -DC* l O? us. Du.. 10.5 111.4 123.0 13.0 112.8 123.0 11.7 12.3 117.7 117.6 128.0 128.0 13.0 113.5 123.0 11.7 115.9 123.0 12.3 114.6 123.0 13.6 12.3 112.2 123.0 114.0 123.0 11.7 111.7 123.0 13.6 117.6 128.0 94 94 96 96 90 91 92 91 95 93 93 92 94 93 91 92 90 91 - - M S/29/81 - COMPACTION TEST REbJLTS Jolr NAME WOODRIDGE PHASE II UNIT 12 -- Jam NUMBCR 592072-PC02 (WATER TRENCH RAmILL) DATE RCWRTCD 412102 DATCO Covrrrrp APRIL 13, 1981 THROUGH APRIL 27, 1981 l ACC w-1 o? w-1 ,- OAVC ,- APR 13 - APR 23 - - - APR 24 - - -APR27 .olmnlrs -1 -11 LocA~lo* or SURFACE mmnw *Y*DSD SaTm. W-.1 W-2 w-3 w-4 w-5 W-6 w-7 W-8 w-9 w-10 w-11 w-12 w-13 dm S/25/81 HOSP. WAY OPPOSITE LOT 36 Hosp. WAY OPPOSITE LOT 46 Hosp. WAY OPPOSITE LOT 66~ HOSP. WAY OPPOSITE LOT 45 HOSP. WAY OPPOSITE LOT 69A PRIVATE STREET OPPASITE LOT 37 PRIVATE STREET OPPOSITE LOT 39 PRIVATE STREET OPPOSITE LOT 38 PRIVATE STREET OPPSITE LOT 47 PRIVATE STREET OPPOSITE LOT 51 PRIVATE STREET OPPOSITE LOT 59 PRIVATE STREET OPPOSITE LOT 55 PRIVATE STREET OPPOSITE LOT 49 -1' -1' -1' SURFACE SURFACE -1' -1' SURFACE -1' 13.6 -1' 13.6 -1' 11.7 SURFACE 13.0 114.0 123.0 SURFACE 13.6 112.4 123.0 11.1 10.5 11.7 12.3 13.0 11.7 13.0 13.0 LADoD~rolll 11e1l-w a? 115.8 123.0 111.9 123.0 114.2 123.0 122.3 128.0 116.6 123.0 115.9 123.0 114.0 118.4 123.0 123.0 114.0 121.0 111.2 112.1 121.0 121.0 (IU,,“, coD**CTt** s-or LAi c&r. 94 90 92 95 94 94 92 96 94 91 92 92 91 . . - - ,a, NAUC - Jam NUUBCR DATE. COWRED :>. s .- ., :. COMPACTION TEST RESULTS WOODRIDGE PHASE II, UNIT 2 592072-FCO2 (UTILITY TRENCH BACKFILL) MY 14, 1981 THROUGH MY 18, 1981 D~rcRCroRrrD 4/z/82 rror u-1 * U-l un mt NumDsn Da7cBT LOCATIOY OC mownJu na.0 -VOW UUTIVS SURFACE oo*ntm Dmdoln mamn CO*,.m40* S1TwT. UP cv l 01 Lu. wa. -l&y14 - gAY15' -- MY 18 - - U-l HOSP. WAY, OPP. LOT. 36 U-2 " )I (I - 66 u-3 .I * I l 66 u-4 PRIVATE ST.," n 44 u-5 II I I - 42 U-6 PRIVATE ST., OPP. L-47 u-7 * * I - 50 U-8 * L " l 53 u-9 " L " " 55 u-10 u-2 PRIVATE ST., OPP. L-66 u-11 U-8 I " " a 53 -6” 14.3 -6 ” 15.3 ,3*' 11.1 -6" 12.3 -3- 13.6 -6" 12.3 -3" 13.6 -3" 14.3 -6" 13.0 -6 ‘1 13.0 -3" 12.3 112.6 109.7 115.3 114.7 115.9 123.0 123.0 123.0 123.0 123.0 91 88 93 93 94 111.5 123.0 90 114.0 123.0 92 105.0 123.0 85 112.6 123.0 91 118.7 123.0 96 115.7 123.0 94 - - - - - . COMPACTION TEST RESULTS 10a NAUC WOODRIDGE PHASE II, UNIT 2 DATKRCWRTCD 412182 JOB Nunnrrr S92072-FCO2 (SUBGRADE AND BASE) - >ATLI COVERED JUNE 2, 1981 THROUGH JUNE 4, 1981 PAGE s-1 - f-l - nbn mr ml”“.‘” JUN2 S-l -- s-2 s-3 s-4 - s-5 S-6 D> s-7 S-8 s-9 s-10 - s-11 s-12 - iJN4 s-13 - s-14 s-15 S-16 s-17 S-18 BSTUV L.DuVlOW OI SURFACE molmn4Y Oo*nn . MTR. nsu4 1**111 cc? u8o”AToIT -TlVS 8aeBn-t CO”CAcTIOY ur sooruJ.osar. PRIVATE ST., OPP. L-60 SG 7.5 110.1 121.0 91 I " m "54 SG 10.5 123.4 128.0 96 " I) " "64 SG 11.1 123.2 128.0 96 " II " "42 SG 13.0 117.3 123.0 95 " " II "43 SG 11.1 118.7 123.0 96 s-1 " * * "60 SG 13.0 118.9 121.0 98 HOSP. WAY, OPP. LOT 36 SC " n " I 45 SG I) " " " 66A SG PRIVATE ST., OPP. L-58 TOP OF BASE " (I " " 51 " " I " n "46 ",I 12.3 117.8 123.0 95 13.0 119.3 123.0 97 12.3 * 118.1 123.0 96 8.7 126.2 129.5 97 9.1 120.4 129.5 93 12.3 129.3 129.5 99 s-11 PRIVATE ST., OPP. L-51 TOP OF BASE " ,I " "41 ")I " II " "36 "" HOSP. WAY, OPP. LOT 45 " " " I " " 66A ” ” HOSP. WAY, STA. 11+50 " " 13.0 127.2 129.5 98 12.3 125.5 129.5 96 13.0 127.7 129.5 98 11.7 128.4 129.5 99 13.0 128.2 129.5 99 12.3 126.3 129.5 97 - - r?e 12/10/w woodwad-Clyde cQnsuttants #$ c**svL.I”c I*CI*.I.s O.OLOS8.V. .“D ‘*.l.O*“.*..L .CI.“.lS., COMPACTION TEST RLAJLTS JOJ NAME WOODRIDGE PHASE XI, UNIT 3 Jw NUMBER 592072-FCO2 (SEWER DRAIN BAC'IWILL) D&n RCWWKD 4/2/82 DA~~~Covm~o APRIL 24, 1981 THROUGH UAY 15, 1981 ?AGC SW-1 Dv SW-1 .- un - APR 24 APR27 - APR 28 - APR 29 - AFR 30 - _ MAY1 -- MAY4 _ MAY13 MY 15 - - -I (IYYICI mowvuu rm*r Lo&x~IO” 01 SURPACE co-n*7 . IIWT. naw LADO”A-1 IIu1IV8 wawn mamn co”C*clIoY UI a? ~wuJ.m.“m SW-l SW-2 -3' 13.6 114.7 123.0 93 SURF. 11.1 110.9 123.0 90 .Sw-3 SW-4 -2' 13.6 114.0 123.0 92 SURF. 12.3 113.2 123.0 92 SW-5 SW-6 SW-7 SW-8 -10' 13.6 113.0 123.0 91 -6' 13.0 114.0 123.0 92 -3' 13.6 105.4 123.0 85 -3' 13.6 112.4 123.0 91 SW-9 SW-10 SURF. 13.6 117.3 128.0 91 SURF. 12.3 118.9 128.0 92 SW-11 SW-12 SW-13 SW-14 HOSP. WAY, OPP. IDT 70 W " " UYr 70 EASEMENT,.LOT 70 " IDT 70 PRIVATE ST., OPP. X.&T 79 " " I IDT 78 PRIVATE ST., OPP. IBT 79 SW-7 " " " LOT 79 PRIVATE ST., OPP. L&Yl' 76 I., I I) IaT 79 PRIVATE ST., OPP. I.&T 97 I) " I Ior 92 PRIVATE ST., OPP. LOT 90 SW-11 " II I IOT 97 -8' 14.3 111.0 128.0 86 -8' 13.0 120.6 128.0 94 -6' 13.6 118.9 128.0 92 -8' 13.6 117.5 128.0 91 SW-15 PRIVATE ST., OPP. LOT 91 -3' 13.0 122..8 128.0 96 SW-16 I I II Ior 95 -3' 11.7 119.8 128.0 93 SW-17 PRIVATE ST., OPP. LOT 90 SURF. 14.3 117.2 128.0 SW-18 " )I I) mT 94 SURF. 11.1 116.6 128.0 SW-19 PRIVATE ST., OPP. LOT 90 -4' 12.3 120.1 SW-20 I) I) It LOT 89 -2' 12.3 118.1 128.0 128.0 \ SW-21 , PRIVATE ST., OPP. LOT 90 SURF. 13.6 116.4 128.0 SW-22 FOREST ST., OPP. LOT 101 -6' 11.7 121.3 128.0 SW-23 " II H LOT 100 -3' 13.0 120.2 128.0 SW-24 FOREST ST., OPP. IDT 101 SURF. 12.3 116.4 128.0 91 91 93 92 90 94 93 90 - wt 7/27/81 COMPACTION TEST RESULTS -Jckl N~rr WOODRIDGE PHASE II UNIT 3 DATE RCWFITED 4/2/82 - Nuwmrr ,,59;072-FC02 (WATER TRENCH BACKFILL) -- D~rrr Covuco MY 26, 1981 THROUGH JUNE 3, 1981 l AGL w-1 * W-l Yvs hAY 26 .- MY 27 - --MY 28 JUNl .-- JUN 2 _- JUN 3 - .- m *YIDU -81 -vie* 01 SURFACE W1-11. 0Dnnuf l I?‘. n8w mmmwv nr -lo”1 8omn cu Bau1tll coIcAmm” l oc w. mas. W-l PRIVATE ST. OPP. IX)T 70 -1' 13.0 119.3 126.0 94 u-2 I " " " 75 -1' 11.1 119.0 126.0 94 w-3 I I " " 79 -1' 13.6 123.6 128.5 96 u-4 w-5 W-6 HOSP. WAY OPP. KDT. SURFACE " " " I " I( " I I " 11.7 118.7 128.5 92 13.0 117.3 128.5 91 12.3 117.8 128.5 91 w-7 W-8 w-9 w-10 PXVATE ST. OPP. LOT 31 " " " " 74 " " I " 79 " . . " I l ” 79 -1' 12.3 115.0 123.0 93 SURFACE 12.3 114.3 123.0 92 -1' 10.5 107.9 123.0 87 SURFACE 13.6 112.5 123.0 91 w-11 u-9 PRIVATE ST. OPP. LQT 79 -1' 13.6 118.9 123.0 96 w-12 FOREST ST. OPP. LOT 99 -1' 13.0 120.0 128.0 93 w-13. " " " " 100 SURFACE 13.0 112.6 123,O 91 w-14 PRIVATE ST. OPP. LOT 96 -1' 12.3 113.2 123.0 92 w-15 I " n " 91 -1' 13.0 116.8 128.0 87 W-16 I w n " 88 SURFACE 13.6 119.0 128.0 92 y-17 " I )I " 93 I 12.3 120.0 128.0 93 W-18 w-19 w-20 w-21 w-22 PRIVATE ST. OPP. LOT 98 " " " " 91 I( " "'a " 82 I( I, " " 87 " I ,I " 81 SURFACE -1' -1' SURFACE " 13.6 13.6 12.3 12.3 13.6 119.0 123.0 96 iii.4 123.0 90 115.1 123.0 93 114.3 123.0 92 114.5 123.0 93 %m 6/22/81 CD”.Y,II”C .*LI*,a”. OIDLOCIITL .*o .*“I.o*“,*..L l Ct.*.ll.s - . Jod NAUC .-- Jam Nunur DATU COVUCD ‘,. ’ COMPACTION TEST RESULTS WOODRIDGE PHASE II, UNIT 3 592072-FCO2 (UTILITIES BACKFILL) JUNE 29, 1981 THROUGH JULY 1, 1981 DATcRCWWLD 4/2/82 PADC u-1 - U-l -la WT ma7 LOUT~OW ““I.‘” O? SUibCE mowlvY nan oo”vaIfT w*:TY l urm. cc? --JUN 29 u-1 u-2 u-3 - u-4 U-S U-6 - Jm 30 u-7 U-8 u-9 _- u-10 u-11 u-12 - u-13 u-14 U-15 U-16 u-17 U-18 -JULl u-19 u-20 u-21 - u-22 U-23 - - - - . u-1 u-2 u-9 u-12 u-14 HOSP. WAY, OPP. IOT 70 * * (I LOT 75 HOSP. WAY, OPP. I#l' 78 * II * IDr 98 HOSP. WAY, OPP. LOT 70 I) * " IBT 75 HOSP. WAY, OPP. LOT 79 I " * LOT 70 PRrVATE ST.,OPP. WT 73 I * n mT 70 PRIVATE ST.,OPP. LOT 73 I " II LOT 78 PRIVATE ST.,OPP. LOT 83 I * II J.&T 87 PRIVATE ST.,OPP. IM' 78 II H II LOT 88 PRIVATE ST.,OPP. I&T 91 * II " T.&T 97 PRIVATE ST.,OPP. WT 87 (I " * LOT 79 PRIVATE ST.,OPP. S.&T 85 " I I WT. 92 PRIVATE ST.,OPP. XOT 100 . -1' -1' -1' -1' -1' -1' SURF. SURF. -1' SURF. -1' -1' -1' -1' -1' -1' -1' -1' -1' SURF. SURF. SURF. SURF. 13.6 105.2 123.0 85 14.3 108.6 123.0 88 13.0 113.0 123.0 91 12.3 115.5 123.0 93 11.7 115.2 123.0 93 12.3 114.8 123.0 93 12.3 110.9 123.0 90 13.0 113.0 123.0 91 13.6 105.5 123.0 85 14.3 112.6 123.0 91 13.0 114.0 123.0 92 14.3 102.3 123.0 83 12.3 112.3 123.0 91 13.6 105.9 123.0 86 11.7 114.7 123.0 93 11.1 115.3 123.0 93 12.3 113.1 123.0 91 11.7 114.6 123.0 93 13.6 114.4 123.0 93 13.0 117.0 128.0 91 13.6 112.9 123.0 91 12.3 118.9 128.0 92 13.6 120.1 128.0 93 - COMPACTION TEST RESULTS Jw Nlrwr - WOODRIDGE PHASE II, UNIT #3 DATE RLWRT~D 4/2/82 ha Nuwmrr 592072-FC02 (SUBGRADE AND BASE) -DArc~CwrarD OCXIBER 27, 1981 THROUGH HOVEXBER 4, 1981 l AGE s-1 - s-1 UT8 -. OCT 27 - --XT 28 - tmv 3 - -vov 4 - nnr *wmmcn IOIPTWU n8w mm LOCATbOY awn*7 u18ll-v a. SURFACE -_ a mvwf. cc? uDomAToIY mmmm UP (ILUTIV8 coYc*cfIo* l ovw.mAr. S-l s-2 s-3 s-4 PRIVATE ST., OPP. L-90 * " l L-95 * " II L-80 " " II L-82 SG 7.5 126.9 128.0 99 SC 12.3 123.1 128.0 96 SG 13.0 125.5 120.0 98 SG 11.7 125.2 128.0 97 s-5 HOSP. WAY, OPP. LOT 70 SG 13.0 122.5 128.0 95 S-6 . (I q - 76 SG 11.7 119.2 128.0 93 s-7 I * II - 103 SG 12.3 124.2 128.0 97 S-8 S-6 HOSP. WAY, OPP. I&T 76 SG 11.1 122.2 128.0 95 s-9 PRIVATE ST., OPP. L-73 s-10 s-11 PRIVATE ST., OPP. L-97 I * 0 L-85 TOP OF BASE T.O.B. T.O.B. 16.3 113.8 131.0 86 1i.i 125.7 131.0 95 12.3 124.7 131.0 95 s-12 PRIVATE ST., OPP. L-91 T.O.B. 10.7 124.6 131.0 95 s-13 s-g * n * L-73 T.O.B. 1'1.7 125.3 131.0 95 s-14 FOREST ST., OPP. L-99 T.O.B. 12.3 128.2 131.0 97 ST15 HOSP. WAY, OPP. l&T 70 T.O.B. 12.5 129.6 131.0 98 S-16 " .I 8, I, 75 T.O.B. 11.1 124.6 131.0 95 s-17 )I " II * 99 T.O.B. 12.5 125.2 131.0 95 - rt 4/l/82 woo&ward-Clybe Consuttants e _ -.. A. - ‘. COMPACTION TEST RESULTS -Jar NAM& WOODRIDGE PHASE II UNIT 14 DATERCWRTED 4/2/82 Jua Nuwnrr 9 592072-FC02 (STORM DRAIN BACKFILL) - OATU covucD JUNE 4, 1981 THROUGH JUNE 23, 1981 PAGE SD-l 0" SD-l m.ImTwU __~ - Y7m m -17 -t'o. mwmou 01 suRF&& FAIK F’CW m.nlrr RI Luoulonl Ol)rotw UC ;uN 4 - - SD-1 p-2 SD-3 sr+4 - m-5 SD-6 - JuN9 - SD-7 IX)T 111 N.W. END -3' SD-8 " 111 S.E. " -2' SD-9 " 111 CENTER SURFACE JUN 11 - SD-10 SD-11 SD-12 _ JUN12 SD-13 SD-14 - JUN 23 SD-15 - - - SD-16 SD-17 MONROE ST. 18" RCP OPP. KIT 107 -6: MONROE ST. 18" RCP OPP. IX)T 107 -3' MONROE ST. 18" RCP OPP. IDT 107 SURFACE MONROE ST. 24" RCP OPP. LOT 113 -6' J4ONROE ST. 24" RCP OPP. LOT 113 -3' MONROE ST. 24" RCP OPP- LOT 113 SURFACE. MONROE ST. 48" RCP STA. 33+40 44' MONROE ST. 48" RCP STA. 33+30 48' MONROE ST. 48" RCP STA. 33+15 50' MONROE ST. 24" RCP W. SIDE -2' MONROE ST. 24" RCP E. SIDE SURFACE t4ONROE ST. 48" RCP STA. 33+40 -4' MONROE ST. 48" RCP STA. 33too -2' MONROE ST. 48" RCP STA. 33+30 SURFACE 13.0 121.1 123.0 12.3 116.1 123.0 13.6 113.6 123.0 11.7 114.0 115.3 112.9' 114.4 116.6 113.1 123.0 12.3 123.0 13.6 '12.3 13.6 13.0 123.0 123.0 123.0 123..0 12.3 13.6 13.0 115.3 117.0 119.5 126.0 126.0 123.0 13.6 12.3 112.9 115.3 123.0 123.0 11.1 13.0 13.6 119.6 119.5 117.0 128.5 128.5 128.5 UU11”. co.c.0700. * O? -. Dw.. 98 94 92 92 93 91 93 94 92 91 92 97 91 93 93 92 91 vv6cxhard-~consuttants e tOUsY,IlYC a*S,**s*, 0‘0L001.Y‘ .“D ,““,“o*“m*..L ,CI,*.ln~l 4 COMPACT1ON TEST REsaJLTS . Ja, NAME WOODRIDGE PHASE II UNIT (14 DATC R~WIRTCD 4/2,82 - JOB NUMBLR 592072-FC02 (SEWER BACKFILL) DATE. COVIRLD NAY 6, 1981 THROUGH MAY 11, 1981 ?A=L w-1 - m-1 - mn mt -UT l wtman 01 - MY 6 SW- 1 - SW-2 SW-3 - MAY 7 SW-4 - SW-5 SW-6 - MAY 8 SW-7 - SW-8 LwI’o. PRIVATE ST. OPP. LOT 111 A PRIVATE ST. OPP. UYT 128 PRIVATE ST. OPf’. LOT 124 PRIVATE ST. OPP. LOT 111 A PRIVATE ST. OPP. LOT 127 PRIVATE ST. OPP. LOT 123 SEWER EXXMENT OPP. LOT 112 SEWER EASEMENT OPP. LOT 118 -2' -2' -4' SURFACE 13.6 116.4 123.0 n 'I 13.0 123.0 13.6 113.0 112.2 123.0 -3' -2' - MAY 11 SW-9 SEWER EASEMENT OPP. LOT 112 SURFACE SW-10 SEWER EASEMEBJT OPP. - LOT 118 . - w’nvr~ 0”ll.T . DlTR. 13.6 12.3 112.6 123.0 114.3 123.0 12.3 115.0 123.0 14.3 112.1 12.3 114.6 13.0 12.3 113.7 115.2 121.0 121.0 121.0 121.0 n&w mmtn UI UBonAlQnv NU1IVI DB.llW CO*CAClIOU nr 8 01 Lu. ma.. 91 92 93 94 91 91 92 94 93 95 - - - - .dm 7/l/81 . -. - COMPACTION TEST RESULTS -Jw NAM& WOODRIDGEPHASE 11 UNIT #4 DATCREWRTCD 4/2/82 JOB Nuw~rn 592072-FC02 (WATER BACKFILL) .- DATL~ COVKRCD MAY 26, 1981 THROUGH JUNE 4, 1981 CAGC w-1 01 W-l WI-U nnw wo.AronT auTtYI ml-a mr l nn Lou1’0. m*nwl m.DlW oml*ITI 80"?*'7r80. - .““.‘I 01 SURFA& 8O”YWT. UI KC * 0. Lu. 0a.I. MAY 26 W-l w-2 w-3 w-4 - MY 27 W-5 - W-6 w-7 - JUN 4 W-8 - w-9 -. w-10 - LOT 111 WEST END " 111 EAST " PRIVATE ST. OPP LOT 107 PRIVATE ST. OPP LMP 100 PRIVATE ST. OPP LX)T 114 PRIVATE ST. OPP LOT 120 PRIVATE ST. OPP mT 124 -1' 11.7 SURFACE 12.3 -1' 13.0 SURFACE 11.1 -1' 11.7 -1' 13.0 -1' 12.3 PRIVATE ST. OPP. LOT 122 PRIVATE ST. OPP. LOT 117 PRIVATE ST. OPP. LOT 179 SURFACE 11.7 'I 11.1 n a-- 12.3 113.0 114.8 117.7 116.0 115.2 113.0 115.5 117.7 119.6 113.0 121.0 93 121.0 94 123.0 95 123.0 94 121.0 95 123.0 91 121.0 95 128.0 92 128.0 93 123.0 91 woodward-ctydecons4.lltants c’ . - d.m 7/2/81 CO*s”,II*O I*C,*r‘.‘ CIOLOC8.I. .reo ‘*.1”0*“,*..L .CI‘*ll*ls ‘I -_ COMPKTION TEST RESULTS _ Jor NAYC WOODRIDGE PHASE 11, UNIT 4 DATE Rcrorrrro 4 /2/a 2 JM Nuw~rs 592U72-FCo2 (UrILrrIES BACKFILL) - DAT~CW~~LD mLY 15, 1981 THROUGH JULY 16, 1981 CAGC u-1 OF u-1 un - JUL 15 - - - JUL 16 -. - - mt *uuBCm U-l u-2 U-3 u-4 u-5 U-6 u-7 U-S u-9 u-10 u-11 u-12 u-13 u-14 u-15 U-16 u-17 - \ct 7/23/81 ~OWTVY nun mcr LoMrio* O? SURFACE Do"rc"T mmtw %U?II. ur LUOUvernv ~IIVW ~Wrv CONHR101 CCI l ww.ouc PRIVATE ST.,OPP. LOT 6 PRXVATE ST. BEZWEEN XWS 107 L 111 PRIVATE ST.,OPP. WT 113 11 * I) UX 124 MONROE ST.,OPP. LOT 105 (I I " LOT 116 u-4 PRIVATE ST.,OPP. u)T 124 HONROE ST.,OPP. LOT 107 )I II I LOT 117 PRIVATE ST.,OPP. IJYJ! 111 " n " LOT 119 HONROE ST., OPP. LOT 142 n II ,I LOT 136 MONROE ST., OPP. LX)T 130 IS " " LOT 136 WNROE ST., OPP. LOT 134 " I‘ ,I I.&T 141 -1’ -1' 13.6 120.1 128.0 93 -1' 11.7 116.0 128.0 91 -1' 10.1 100.1 123.0 81 -1' 13.6 112.9 123.0 91 -1' 13.0 113.0 123.0 91 -1' 13.6 117.0 123.0 95 SURF. 13.0 113.8 123.0 92 SURF. 11.7 114.7 123.0 93 SURF. 13.0 113.0 123.0 91 SURF. 12.3 115.0 123.0 94 -1' 14.3 109.1 123.0 88 -1' 11.1 110.3 123.0 90 -1' 11.1 119.7 128.0 93 -1' 11.1 112.9 123iO 91 SURF. 12.3 117.8 128.0 92 SURF. 13.0 120.6 128.0 94 11.1 llS.7 128.0 92 woodward-Clyde- A G co*s”LII*c a*CI*,l.. SIOLDC,... .*a ,“.,“0*1,*.., ,C~**fl,,L COMPACTION TEST RESULTS - Jar NAME WOODRIDGE PHASE II, UNIT (4 DATCRCPORTED 412182 - Joa Nuwmc~ 592072-FCO2 (SUBGRADE AND BASE) DArc~Covr*ro OCTOBER 26, 1981 THROUGH NOVEMBER 2, 1981 PAGE s-1 Or S-l YR mr -#I Loul-#o* mumman OI SURFACE -- OCT 26 S-l S-2 s-3 - s-4 s-5 S-6 - s-7 OCT 27 S-8 PRIVATE ST., OPP. XYI' 123 SG 11.7 118.3 123.0 96 s-9 '" " * " 128 SG 12.3 118.6 123.0 96 s-10 * " * 'I 113 SG 10.5 120.5 123.0 97 OCT 30 s-11 -_ s-12 s-13 - s-14 s-15 NOV 2 S-16 MONROE STREET, STA. 28+00 T.O.B. s-17 n 8' .I 31+00 T-0-B. MONROE STREET, OPP. L-105 I * * L-111 " " * L-116 PRIVATE ST., OPP. I 106 1) I) (I * 114 m II * " 120 s-1 MONROE STREET, OPP. L-105 PRIVATE ST., OPP. LOT 24 PRIVATE ST., OPP. LQI' 116 PARKING AREA BETWEEN LQTS 1llA C 107 PRIVATE ST., OPP. LOT 104 PRIVATE ST. BETWEEN LOTS 1llA & 107 SG SG SG SG SG SG SG TOP OF BASE T.O.B. T.O.B. T.O.B. T.O.B. moID-ruu 00*n*t *ITuT. nma mslrnlW cc? UmomAlornT y*#llv PC* 10.7 111.5 121.0 92 11.7 119.8 123.0 97 10.8 119.0 123.0 96 11.1 121.4 126.0 96 10.5 117.1 121.0 96 11.1 115.3 121.0 95 10.7 115.7 121.0 95 10.7 131.6 12.3 128.1 loot 97 13.0 10.5 13.4 10.5 11.7 127.1 128.2 131.0 131.0 131.0 131.0 131.0 144.0 144.0 97 97 127.1 97 137.4 141.4 95 98 .- - .- s I Y+ A/l /~-a WoodwaKl-wu 4 co*,“LII*c ,*CI*,I.‘ CIOLDOI,V. COMPACTION TEST RESULTS - Jod NAM& WOODRIDGE PHASE II, UNIT 15 DATE RC?ORTCD 4/2/82 - JOB NUMBErr 592072-FCO2 (STORM DRAIN BACKFILL) DAruCovr"tD JUNE 8, 1981 +HRoUCH JUNE 9, 1981 l =SJj,l Dr SD-l un t88t rncTrl7 LoaTlOY “““.I” 0, SURFACE --JUN 8 SD-l PRIVATE ST., OPP. L-143 -5' 13.0 120.8 123.0 98 SD-2 II n " L-143 -2' 12.3 121.4 128.5 94 SD-3 WEST OF LOT 130, N. &ND -4' 12.3 120.0 128.5 93 - SD-4 WEST OF LOT 130, S. END -2' 13.6 123.1 128.5 95 JuN9 SD-5 PRIVATE ST., OPP. L-143 SURF. SD-6 -- WEST OF LOT 130, CENTER SURF. - ___ . wt 4/l/82 “01el-unn co*n*t l rnYw-l. 13.0 119.5 128.5 93 12.3 120.0 128.5 93 nmn mmlIIl-Y rc? WWYOIY B8MOltY ?cI WoodwardCQde Cmsuftants e Cc..,.“. *,.a.? ..,C..,,... C.O.dLI.V. ,.r. .’ .-. COMPACTION TEST REsaLTS --kid NAM WODRIDGEPlikSE 11,UNIT 5 +# Nuw~rrr s92d72-F-co2 WWER BAQ(FILL) - DA-C-u, MY 4, 1981 THROUGH HAY 5, 1981 DATE RLWRTCO 4/z/82 P*cr m-1 OF m-1 Ytm mT M-rx~T CouTloY auaocn w WAY 4 m-1 - SW-2 SW-3 PRIVATE ST.,OPP. IDT 140 -4' 13.6 120.4 128.0 94 I * " m 135 -4' 13.0 118.8 128.0 92 I) " I IUT 137 -2' 12.3 123.5 128.5 96 --wIY 5 Su-4 Su-5 .- -. _ m-6 )IDNROE ST., OPP. KIT 131 -2' 12.3 121.3 128.5 94 PRIVATE ST.,OPP. ILYX' 136 SURF. 11.7 117.0 128.5 91 )I I) I I&T 139 SURF. 13.6 119.1 128.5 92 UOICIUU SURFACE oo*YmWT l ITI?. noun U(0lY-Y a? wt 7/23/81 : .- ’ . . COMPACTION TEST RESULTS -Jod NANC WOODRIDGE PHASE II, UNIT 5 DAT~RCWRTED 4/2/& Jar Nuw~rr 592072-x02 (WATER BACKFILL) - D*~~~co"~n~o JUNE 10, 1981 THRXJGH JUNE 11, 1981 CACL W-l or W-l MI1 Tmt 0l"I.L" JUN 10 W-l - w-2 w-3 w-4 - Km 11-“ w-5 w-6 w-7 - W-8 - & 7/23/81 WTCSl LDUTIOY O? SURFACE PRIVATE ST.,OPP. UY'F 130 -2' 11.7 115.0 123.0 93 II ,I I) SOT 133 -2' 13.6 105.9 123.0 86 PRIVATE ST..,OPP. I.LYl' 137 -2' 13.0 114.0 123.0 92 " II I) LOT 141 -2' 14.3 112.6 123.0 91 w-2 PRIVATE ST.,OPP. m 133 -2' 13.0 115.1 123.0 93 * " I WT 132 SURF. 12.3 119.1 123.0 96 , PRIVATE ST.,OPP. IX)T 136 SURF. 12.3 112.3 123.0 91 " " " T&T 140 SURF. 11.7 117.2 123.0 95 wtmvu w*lKwl smt17. nat.0 UJlSlW UCI -TORY maw cc? WTlW coYwcII** l oIuJ.unO. - . . . COMPACTION TEST RESULTS -od NAYL WOODRIDGE PHASE II, UNIT 5 DATE RrwnTto 4/2/82 JOB Nuu~ra 592072~FCO2 (UTILITY TRENCH BACKFILL) - 'AT"CoVc"LO AUGUST 31, 1981 THROUGH SEPTEMBER 1, 1981 CAGL u-1 0' u-1 wn -1 OrreST aUWB* 01 -AUG 31 U-l - u-2 - u-3 u-4 - SEPT 1 U-5 u-4 - U-6 u-7 - - moIBTuu nun WOUTVIY ULl,l”l LOCAT80* SURFACE WICTCW BmNBIlY mswY W”ClcTlO” l rn?rn. Uf cc? *ofMYJ.MnB. PRIVATE SI'REET, OPP. xor 140 -1' 13.0 PRIVATE STREET, OPP. LOT 137 -1' 12.3 PRIVATE STREET, OPP. mT 134 -1' 13.6 PRIVATE STREET, OPP. mT 131 -1' 14.9 PRIVATE STREET, OPP. LOT 131 PRIVATE STREET, OPP. IaT 133 PRIVATE STREET, OPP. LOT 138 -1' 12.3 SURF. 13.0 SURF. 12.3 117.0 120.2 116.4 112.6 121.3 116.1 118.4 - . - * wt g/24/81 128.5 91 128.5 93 128.5 90 128.5 87 128.5 94 128.5 90 128.5 92 CO*‘“LI,*S I”CI”II‘.. O.OLOClll. .*a ‘““,“Dre”,“,.L ,C,aYII‘,, - - . COMPACTION TEST RESULTS JIM NAIBC WOODRIDGE PHASE II, UNIT 15 DATL RCWRTCD 412~82 JOB Nvwmr 392072-FCQ2 (SUBGRADE AND BASE) - DA-Cov‘RLo OCTOBER 26, 1981 THROUGH OCXQBER 30, 1981 pA=L s-1 Or S-l - tin l oIs-iv”s nabm UOO”ATOlY LtLIIIW w msr LOCAllO” .““OE. O? SURFACE W”~YT CUIDITT mDn7 W",.CT*O* . my-. UI cc? l or- “sap . .- oc1' 26 - om 30 - - - - - - - - - - s-1 PRIVATE ST., OPP. L-142 SG 12.3 114.8 121.0 95 s-2 " " " L-135 SG 10.5 120.9 126.0 95 s-3 I " " L-130 SG 11.1 116.7 123.0 95 s-4 PRIVATE ST., OPP. L-139 TOP OF BASE 9.9 i 126.7 131.0 96 s-5 I) " I _ L-133 T.O.B. 12.3 126.3 131.0 96 = wt 4/l/82 co*L”L.~*c ,*cI**‘“s SIOLOC1‘.. .*m D*“I”D*“,*,CL .c,s*7,,,, PLASTICITY.CHARACTERISTI~ 1 2 3 4 Liavid Limit. K 32 22 24 - - , . . 150 - - 140 - - - - - 1x PI&city Index, # 16 3 12 Classification by Unified Soil Classification System SC SM SC IDS CURVES 1 00 80 60 40 20 0 iooo loo 10 1.0 0.1 0.01 0.001 GRAIN SIZE, mm MECHANICAL ANALYSIS I- I DIRE l- Final Water Content, % IA 1 - ! - I.- 1 DDarenl Cohesion. Dsf l-l-l-l SAMPLE LOCATION YON BOTTOM CUT L0TS 123-128 CUT LOTS 90-98 I 10 20 30 40 IABORATO~-~Y C$$fiC&~~!js7 7. A LABORATORY COMPACTION TEST TEST METHOD: FILL SUITABILITY TESTS WOODRIDGE PHASE II, UNIT 2 DRAWN BY: ch CnECKED BY: aPROJECT NO: 5%!072-FcO2 1 DATE: 4/13/81 FIGURE NO: 1 A WT 3/30/81 WOOOWARD-CLYDE CONSULTANTS _-- , * . 150 .- - . . 140 . ! rl i I I I I 110 i i PLAsflClTY CHARACTERISTICS Liquid Limit, W Pirrticity Index. X t?P 27 10 Classification by Unified Soil Clruifiotion System !a SC SC I ZERO AIR VOIDS CURVES (3 250 I f&w ii “0 40 5 Q 20 0 1aM loo 10 1.0 0.1 0.01 0.001 . GRAIN SIZE, mm MECHANICAL ANALYSIS DIRECT SHEAR TEST DATA Dry Density, pcl initial Water Content, ‘16 Final Water Content, % Apparent Cohesion, psf Apparent Friction Angle, degrees - - - , Optimum Moisture MOISTURE CONTENT, 36 10 20 30 40 ~BORATORY CC)$$$CJl~J$57 7. A LABORATORY COMPACTION TEST TEST METHOD: * I FiLL SUITABILITY TESTS WOODRIDGE PHASE II, UNIT 2 CHECK ED BY:, PROJECT NO: 592072-FC02 FIOUllE NO: 2 WT 3/30/81 WOOOWARD-CLY DE COWSlJlfANlS I . I- . . * ‘. ‘. .* 3467KurtzSIreet San &go Cal.!orn~a 92110 I 714.224.2911 77-z FicL - &b&+ i W00dwardClyde Consultants i June 5, 1981 Project No. 592072-PC02 Broadmoor Homes, Inc. 3911 Sorrento Valley Boulevard San Diego, California 92126 -L c - - -I --__ -- - e-w Attention: Mr. James Carter FINAL REPORT OF ENGINEERING OBSERVATION OF GRADING AND TESTING OF COMPACTED FILL WOODWRIDGE PHASE II CARLSBAD TRACT 77-2, UNlT 3 LOTS 70 THROUGH 103 . CARLSBAD, CALIFORNIA -- -- _- J : .' Gentlemen: In accordance with your request, and our proposal dated January 22, 1981, we have provided engineering services in conjunction with the grading of the subject site- SCOPE OF WORK 'Our senrices included: a Providing engineering observation of the grading operation, 0 Providing engineering and geologic alluvial removal, 0 Performing field density tests in compacted fill, 0 Performing laboratory tests on observation of the placed and representative samples of the material used for fill, and 0 Providing professional opinions regarding the contractor's general adherence to plans and specifications. Consulllng Engrieers Ge3lwsfs ang Envqinmenrai Sc:enlts!s . i . f . . Broadmoor Homes, Inc. June 5, 1981 I. Project No. 592072-FC02 I Page 2 Woodward-Clyde Consultants i SUMMARY OF' GEXEWL EARTHWORX AND TESTING Site preparation, compaction, and testing were done between December 22, 1980 and May 8, 1981. In our opinion, based on our observation and testing,.. the work‘perfotied during that period was in general conformance with the Specifications for Controlled Fill attached to our report entitled "Soil and -z.y--- Geolqgfc Investigation for- the Prop0se.d Carlsbad Tract __ No. CT 77-2," dated July 19, 1979. -. -.- me - i During the grading period, fill was placed, compacted, and tested on fill Lots 70 through 72 and cut-fill Lots 73, 81 through 84, 99 and 100. Lots 102 and 103 have been left in their natural state. Lots 74 through 80, 85 through 98, and Lot 101 are cut lots. The grading operation generally consisted of removing alluvial and loose surface soils, watering, scarifying, and compacting areas to receive fill and making cuts and fills to design grade. . .. During the grading operation, compaction procedures were observed, and field density tests were made to help.evaluate the relative compaction of-the placed fill. Field observations and results of field density tests indicate that the fill has been generally compacted to 90 percent or more of maximum laboratory dry density as determined in accordance with ASTM Test Method No. D1557-70. For reference, the approximate locations of field density tests and the limits of compacted fill have been recorded on a copy of the grading plan. The results of field density tests, expressed as .a percent of laboratory dry density (relative compaction), are given on the attached forms. Laboratory tests were made on representative samples of the materials us'ed for fill. The tests were performed to evaluate moisture density relationships, maximum dry density, optimum moisture content, grain size distribution, plasticity and swell characteristics. The results of laboratory tests are attached. * SUMMARY OF FINISH GRADE SOIL CONDITIONS Fill Lots and Fill Portion of Cut-Fill Lots Inspection and laboratory tests indicate that nonexpansive fill was placed within two feet of rough grade on all fill lots noted herein. Broadmoor Homes, Inc. June 5, 1981 Project No. 592072-FC02 Page 3 Woodward-Clyde Consultants ._*. Cut Lots and Cut Portion of Cut-Fill Lots . . Cut lots and cut-fill lots were inspected at the completion of grading. The inspection indicated that no expansive soil is evident at rough grade surface. Nonexpansive soil is soil which swells less than three percent when compacted to 90 . -i--‘- percent ,of--the maximum laboratory compaction density at.optimuq- water content under a-surcharge of 160-psi: -. -.- ___- RECOMMENDATIONS Foundations for Structures on Nonexpansive Soils We recommend that foundations for single- or two-story; multi- dwelling, residential structures placed on nonexpansive, undisturbed soil or on nonexpansive, properly compacted fill be designed for a bearing pressure not exceeding 2,000 psf (dead plus live loads). We recommend that footings be founded at least 12 inches below finished grade and have a minimum width of 12 inches. In our opinion, this bearing pressure can be I : increased by no more than one-third for loads that include wind or seismic forces. i Slopes Fill slopes at the site have varying inclinations of approximately l-1/2:1 to 2:l (horizontal to vertical), and are approximately 10 feet high. Fill slopes'were treated by over filling, rolling with a sheepsfoot compactor and cutting back to design grade. We recommend that structures that will not tolerate differential settlements (such as foundations, swimming pools, concrete decks, walls, etc.) not be located within eight feet of the top of a slope. We recommend that footings that are located within eight feet of the top of a slope be extended in depth until the outer bottom edge of the footing is eight feet horizontally from the outside face of the slope. Additional Fill and Utility Trenches This report discusses the fill placement observed by personnel from our firm during the period speci,fied. We recommend that any additional fill placed, as well as backfill placed in utility trenches,located within-five feet of a building and deeper than 12 inches, or backfill placed in any trench located Broadmoor Homes, Inc. June 5, 1981 Project No. 592072-FC02 Page 4 , Woodward-Clyde Consuitants 1 ? five feet or more from a building and deeper than five feet, be - _. compacted under our observation and tested to verify compliance with the earthwork specifications for the project. We should be contacted at least 24 hours prior to backfilling operations, Drainage _ -CT”- We recommend that-positive measures be taken to properly-finish- -- -. grade-each lot after structures and other improvements are in place, so that drainage waters from the lot and adjacent properties are directed off the lot and away from foundations, floor slabs, and slope tops. Even when these measures are taken, a shallow ground water or surface water condition can and may develop in areas where no such water condition-existed prior to site development; this is particularly true where a substantial increase in surface water infiltration.results from landscape irrigation. LIMITATIONS , ,.. -. The elevations of compaction tests shown as finished grade (FG) Urn. tests on the attached forms correspond to the elevations shown on the "Grading Plan for Carlsbad Tract #77-2, Unit 3," dated February 14, 1980, prepared by Roy L. Klema Engineers, Inc. Elevations and locations used in this report were based on field surveys done by others. - . The soil conditions described in this report are based on observations and periodic testing. This office should be notified of any indications that soil conditions are not as described herein. We will inspect foundation excavations for each lot if we are requested to do so. For this report, rough lot grade is defined as that grade set in the field by the grade checker from reference stakes established by the surveyor, and represents rough grade at the* time we were inspecting the grading operation. The conclusions and opinions drawn from the test results and site inspections apply only to our work with respect to grading, and represent conditions at the date of our final inspection. We will accept no responsibility for any subse- quent changes made to this site by others, or by uncontrolled action of water, or by failure of others to properly repair damages by uncontrolled action of water. . l .I , . l * . Broadmoor Homes, Inc. June 5, 1981 Project No. 592072-FC02 Page 5 WoodwardClyde Consultants . j r! If you have any questions, please give us a call. . Very truly yours,' WOODWARD-CLYDE CONSULTANTS ~ - - --.. ! -- I -.- _- _. Stevesi C. Haley R.E. 18577 . SCEf/DT/rs Attachments (4) . * / -_ t . . . . . . . COMPACTION TEST RESULTS Joa N*wr WOODRIDGE PHASE II, UNIT 3 DATC RLPORTED G/5/81 Joa Nuwmrrr 592072-FCO2 8 !! P*-rts Covrrro JANUARY 19, 1981 THROUGH MAY 8, 1981 rrcr 1 OP 1 -.:. RO,-4 "LLD LLIoui-o*~ mars rrrt mm87 -7,*X LocIT,o* LLs"*llo* -* DC*.,rT PCI.,* "Y-III OI co*P*cTIo* 01 lxst *-=:-. UP rv % O~LU. Owl.. JAN19 1 LOT 71 - 2 * 70 _ _a. 3 ---. L I, 72 __ _-_ -= JAN 20 4 5 6 LOT 71 186' .- 12.3 117.2 128.0 91 . . 72 192 ' 13.0 114.0 123.0 92 " 73 194' 12.3 112.6 123.0 96 JAN 21 7 LOT 70 194' 11.1 114.0 l-23.0 8 " 84 190' 13.0 114..2 ,121.0 9 II 82 192' 11.7 111.0 121.0 JAN 22 IFEB-4 FEB 5 FEB 6 -_ FEB 24 MAY 8 10 LOT99 . 196' 11.7 110.8 121.0 11 - w 100 198' 12.3 117.8 128.0 12 13 14 15 16 . LOT 73 F’, 195.3' 13.6 118.4 128.0 17 " 7'1 FG 195.3' 10.5 116.4 128.0 18 LOT 7i LOWER FG 187.0' 11.7 i16.1 128.0 19 .I 70 ** FG 187.0' 11.7 116.5 128.0 20 - LOT '0 UPPER FG 196.0' 12.3 118.4 128.0 21 ' (1 71 " FG 196.0 12.3 118.1 128.0 22 LOT 99 FG 199.6 12.3 117.0 128.0 23 " 100 FG 199.6 13.0 118.2 128.0 LOT 81 UPPER W’ 82 IQ '* 83 " '* 84 - : 180. :. 184' 188' - .- 13.0 111.:5 121.0 92 13.6 110.1 121.0 91 13;o 117.8-. -128.C “92. -. FG 193.5' 13.0 112.6 123.0 L FG 193.2' 11.7 112.3 123.0 FG 193.2' 13.0 112.9 123.0 FG 192.8 12.3 lli.5 123.0 92 94 91 91 92 * ".) 91 91 91 . 90 92 90 / 90 91 92 92 91 * 92 . . . . ( l . . . 1 PLASTICITY CHARACTERISTICSI 1 1 2 1 3 1 Liquid Limit, % 32 122 24 Plasticity Index, % 16 .;3 12 Classification by Unified Soil r Classif ication System SC SM SC ,f 1oa (3 z 80 9, iE g40 a w 0, 20 4 ERO AIR VOIDS CURVES 0 2.70SG - - --- MECHANICAL ANALYSIS iooo 100 10 -1.0 0.1 -aOF- 0.001 GRAIN SIZE, mm - -- COBBLES “;“A”: 1 c Sy I I i f SILT L CLAY 100 Dl R ECT SHEAR TEST DA?A 1 2 3 Dry Density, pd Initial Water Content, % Final Water Content, % I - . . Apparent Cohesion, psf Apparent Frictton Angie, degrees - - * . SAMPLE LOCATION TOT 130. C@lYON BOW CUT LOTS 123-128 CUT LOTS 90-98 I 10 20 30 40 LABORATORY COMPACTION TEST LABORATORY C~$#~~‘~~5, 7. A TEST METHOD: FILL SUITABILITY TESTS WOODRIDGE PF!!SE II, UNiT 2 I 1 I . . * .- _ . -i . . 150 110 1oc 8( . ! i 1 ; b d . ; t I- q PLASTICITY CHARACTERISTICS 4 5 6 SILT & CLAY Liquid Limit. % 44 34 100 Plasticity Index, % NP 27 18 Classification by Unified Soil Classification System SM kc SC I g 80 3 2” ,+ g 40 a . ZERO AIR VOIOS CURVES k! 20 0 -70 SG . _ ___ - 1000 100 10 ..-. . GRAIN !.(I_ 0.1 8.81 _ ~0~001 SIZE, mm MECHANICAL ANALYSIS - DIRECT SHEAR TEST DATA ’ 4 5 6 Dry Density, pcf \ - Initial Water Content, % Final Water Content, % I-. Apparent Cohesion. psf . i I \i\ I I III ill I . SAMPLE LOCATION Maximum Dry Defwty, pcf 121.0 123.0 126.0-- Optimum Moisture . . _ l - c ~ r) n , , , Content, % 1 } 1 1 1 MOISTL I I1.U IV.2 I”.” ( JRE CONTENT, % 10 20 30 40 LABORATORY COMPACTION TEST 111 LOTS 130-139 FiLL SUITABILITY TESTS WOODRIDGE Pk!!SE II, UNIT 2 I I ..A_ rcI-e-.-- -c-q -_-_ 1 I-^ a-- c 1 ’ . ,** # . .._ 81 PLASTlCfTY CHARACTERISTICS , ’ I ? Liquid Limit, % Plasticity Index, % ta? Classification by Unified Soil Ctasrification System SM ‘i c . . ZERO AIR VOIDS CURVES BBLES ;“‘:’ ’ c ‘f” f SILT b CLAI $j 80 $60 : g 40 @z E! 20 0 1000 loo 10 1.0 0.1 091 0.001 _ .-. _ GRAIN SlZE,mm -- - MECHANICAL ANALYSIS _. 7 DIRECT SHEAR TEST DATA i 7 Dry Density, pd Initial Water Coflten:. % Final Water Content, % Apparent Cohesion, psf - Apparent Friction Angle. degrees - - l- I- LA80RATORY COMPACTION LABORATORY COMPACTION TEST TESTMETHOO: AST."I D 1557 70 A FILL SUlTAElLlTY TESTS WOODRIDGE PHASE II, UNIT 2 rtP.WY IIY. J CHECKEDBY:.~ PROJECTNO: 592072-FC02 1 C&n: 4/13/82 I FIGURE NO: > ’ * . . -- I 3467 l<tirtz Street San 01ego. CaMorn8a 92110 714-224-2911 Telex 697.84 1 WoodwaraGlyde Consultants - May 13, 1981 Project No. 592072-FC02 - Broadmoor Homes, Inc. 3911 Sorrento Valley Boulevard San Diego, California 92126 Attention: Mr. James Carter FINAL REPORT OF ENGINEERING OBSERVATION OF - GRADING AND TESTING OF COMPACTED FILL WOODRIDGE PHASE II - CARLSBAD TRACT 77-2, UNIT 5 LOTS 130 THROUGH 143 CARLSBAD, CALIFORNIA - - *Gentlemen: In accordance with your request, and our proposal dated January 22, 1981, we have provided engineering services in conjunction with the grading of the subject site. SCOPE OF WORK Our services included: 0 Providing engineering observation of the grading operation, 0 Providing engineering and geologic observation of alluvial removal and buttress construction, 0 Performing field density tests in the placed and compacted fill, 0 Performing laboratory tests on representative samples of the material used for fill, and 0 Providing professional opinions regarding the con- tractor's general adherence to plans and specifications. Consulbng Engineers. Geologlsts and Envaonmental Sc~enIMs Otflces tn Other Pnnclpal Cities *Broadmoor Homes, Inc. May 13, 1981 Project No. 592072-FC02 Page 2 Wtddward-Clyde Consultants SUMMARY OF GENERAL EARTHWORK AND TESTING Site preparation, compaction, and testing were done between December 22, 1980 and April 30, 1981. In our opinion, based on our observation and testing, the work performed during that period was in general conformance with the Specifications for Controlled Fill attached to our report entitled "Soils and Geologic Investigation for the Proposed Carlsbad Tract No. CT 77-2," dated July 19, 1979. During the grading period, fill was placed, compacted, and tested on Lots 130 through 143 along the western edge of Monroe Street, and a private roadway parallelling Monroe Street. A buttress fill was constructed at the rear of Lots 136 through 141 in accordance with the recommendations of the preliminary report. A 3 to 1 inclined fill slope was constructed northward from Lot 130 in accordance with a report dated April 22, 1981. The grading operation gener- ally consisted of removing alluvial and loose fill soils, installing subdrains under the buttress slope and on the bottom of the draw along Monroe Street, scarifying, watering and compacting areas to receive fill, and making cuts and fills to design grade. During the grading operation, compaction procedures were observed, and field density tests were made to help evaluate the relative compaction of the placed fill. Field observations and results of field density tests indicate that the fill has been generally compacted to 90 percent or more of maximum laboratory dry density as determined in accordance with ASTM Test Method No. D1557-70. For re- ference, the approximate locations of field density tests and the limits of compacted fill have been recorded on a copy of the grading plan. The results of field density tests, expressed as a percent of laboratory dry density (relative compaction), are given on the attached forms. : . I . .Broadmoor Homes, Inc. May 13, 1981 Project No. 592072-FC02 Page 3 - - - - - - - .- W~~dward4lyde Consultants Laboratory tests were made on representative samples of the materials used for fill. The tests were performed to evaluate moisture density relationships, maximum dry density, optimum moisture content, grain size distribution, plas- ticity and swell characteristics. The results of laboratory tests are attached. - SUMMARY OF FINISH GRADE SOIL CONDITIONS Inspection and laboratory tests indicate that non- expansive fill was placed within 2 feet of rough grade on all lots noted herein. The soils at finish grade in our .opinion can be classed as SM soils. They meet the HUD criteria for slab underlay in that they swell less than 2 percent under a surcharge load of 150 psf, have less than 35 percent passing the No. 200 sieve, and the plasticity index is less than 15. RECOMMENDATIONS Foundations for Structures on Nonexpansive Soils We recommend that foundations for single- or'two-story, multi-dwelling, residential structures placed on nonex- pansive, properly compacted fill be designed for a bearing pressure not exceeding 2,000 psf (dead plus live loads). We recommend that footings be founded at least 12 inches below finished grade and have a minimum width of 12 inches. In our opinion, this bearing pressure can be increased by no more than one-third for loads that include wind or seismic forces. Slopes Fill Slopes at the site have inclinations varying from approximately 3:l to 2:l (horizontal to vertical), and are 1 ’ I -- , Broadmoor Homes, Inc. May 13, 1981 Project No. 592072-FC02 Page 4 Wbjdward-Clyde Consultants approximately 80 feet high maximum. Fill slopes were * treated by overfilling, periodically backrolling with a sheepsfoot compactor, track rolled and then trimmed back to grade. - - - - Additional Fill and Utility Trenches This report discusses the fill placement observed by personnel from our firm during the periods specified. We recommend that any additional fill placed, as well as backfill placed in utility trenches located within 5 feet of a building and deeper than 12 inches, or backfill placed in any trench located 5 feet or more from a building and deeper than 5 feet, be compacted under our observation and tested to verify compliance with the earthwork specifications for the project. We should be contacted at least 24 hours prior to backfilling operations. Drainage We recommend that positive measures be taken to prop- erly finish grade each lot after structures and other improve- ments are in place, so that drainage waters from the lot and adjacent properties are directed off the lot and away from foundations, floor slabs, and slope tops. Even when these measures are taken, a shallow ground water or surface water .condition can and may develop in areas where no such water condition existed prior to site development; this is partic- ularly true where a substantial increase in surface water infiltration results from landscape irrigation. LIMITATIONS The elevations of compaction tests shown as finished grade (FG) tests on the attached forms correspond to the - I Broadmoor Homes, Inc. May 13, 1981 Project No. 592072-FC02 Page 5 ' Wbdward4lyde Consultants elevations shown on the "Grading Plan for Carlsbad Tract 77-2, Unit 5," dated March 4, 1980, revised April 10, 1981, prepared by Roy L. Klema Engineers, Inc. Elevations and locations used in this report were based on field surveys done by others. The soil conditions described in this report are based - on observations and periodic testing. 'This office should be notified of any indications that soil conditions are not as described herein. We will inspect foundation excavations for each lot if we are requested to do so. For this report, rough lot grade is defined as'that grade set in the field by the grade checker from reference stakes established by the surveyor, and represents rough grade at the time we were inspecting the grading operation. Likewise, the indicated depths of placement of nonexpansive soil were based on the measurements made by and grades set by the contractor's grade checker. - The conclusions and opinions drawn from the test results and site inspections apply only to our work with respect to grading, and represent conditions at the date of our final inspection. We will accept no responsibility for any subsequent changes made to this site by others, or by uncontrolled action of water, or by failure of others to properly repair damages by uncontrolled action of water. If you have any questions, please give us a call. Very truly yours, - WOODWARD-CLYDE CONSULTANTS - - Richard P. While R.E. 21992 RPW/DT/rs Attachments (4) , - OMPACTION TEST RESULT5 Jorl NAME WOODRIDGE PHASE II, UNIT #5 DATE RC~ORTEO s/14/81 - 28 NUM~LR 592072-FC02 (BUTTRESS FILL-PREVIOUS LOT NUMBERS) ~ATEoCoVEREo MARCH 10, 1981 THROUGH MARCH26, 1981 PAGE B-1 Or B-2 !4 t 10 .- 'I t 11 -- - .?I...3 12 - MAR 13 - - M-1 14 B-9 WEST OF LOT 135 124' 11.7 114.4 126.0 90 B-10 @I ,I ,, 137 128' 13.0 117.3 128.5 91 B-11 I# ,I II 136 132' 11.7 117.8 128.5 91 B-12 I, ,I I, 136 136' 13.6 108.2 126.0 85 B-13 B-12 II II II 136 136' 13.0 118.1 126.0 93 - B-14 WEST OF LOT 134 92' 12.3 115.1 123.0 B-15 II II ,I 135 128' 13.0 111.0 123.0 B-16 ,I II I, 134 96' 13.6 112.2 123.0 B-17 II II ,I 134 102' 11.7 118.3 128.0 Mb9 15 -- - B-18 B-19 B-20 B-21 B-22 MAR 16 - B-23 B-24 B-25 M.9 17 -- - FL t 18 -- - PL I 19 -- - MA& 23 - _- WI s/11/81 B-3 WEST OF LOT 138 100' 11.7 114.3 123.0 92 B-4 II w II 136 104' 13.6 115.4 -123.0 -93 B-5 II II II 137 108' 13.0 116.0 123.0 94 B-6 WEST OF LOT 135 86' 13.6 115.1 123.0 93 B-7 '8 II II 138 116' 11.7 114.4 123.0 93 B-8 II I) I, 136 120' 13.0 113.4 123.0 92 WEST OF I.0T 135 II I, ,I 133 II I, II 133 I, I, ,I 132 II II ,9 133 WEST OF LOT 134 II II I, 136 II II I, 132 126' 12.3 118.3 128.5 112' 12.3 120.6 128.5 118' 12.3 117.1 128.5 122' 11.7 119.8 128.5 130' 10.5 123.1 128.5 136' 12.3 122.3 128.5 140' 11.7 122.1 128.5 142' 11.7 118.3 128.5 B-26 B-27 By28 B-29 B-30 B-31 B-32 B-33 B-34 B-35 B-36 LOT 130 LOT 131 LOT 132 LOT 130 LOT 134 LOT 133 LOT 132 MT 130 LOT 134 LOT 131 LOT 133 70' 11.1 112.6 123.0 74' 10.5 118.5 126.0 78' 12.3 115.0 126.0 82' 13.6 114.9 123.0 78' 13.0 112.0 123.0 84' 13.6 114.0 123.0 86' 13.0 116.3 126.0 90' 12.3 118.3 126.0 94 ' 11.7 118.0 121.5 98' 13.6 115.4 126.5 102' 12.3 117.1 126.5 93 90 91 92 92 93 91 93 95 95 95 92 91 94 91 93 91 92 92 93 93 93 92 Woodward-Clyde Consultants @ lX.l P4”Y.K” “a,**, LOC*t,O” CLL”AYlON 0, or YE.I YOI.Y”III COYT.)II * onr WT. lItLo OIH.8,” PC, LAIOIAYOIIY Il.UYI”l 0,"IITI COYCltYlO" K? * 0, L*.. OU@. B-l LOT 139 94’ 11.7 111.8 123.0 90 B-2 IDT 136 98’ 14.3 112.6 123.0 91 “,OMPACTION TEST RESULTS ’ -‘OJ NAME WOODRIDGE PHASE II, UNIT #5 OATS REPORTED 5/14/Sl ~08 Nuu8r~ 592072-EC02 (BUTTRESS FILL) - ATL~COWRED MARCH 10, 1981 THROUGH MARCH 26, 1981 PACE B-2 OF B-2 -- 0*1e 711.1 RSTS~7 N”Y.LR or IAR 24 B-37 - B-38 B-39 ps B-40 B-41 B-42 B-43 - I 3 26 B-44 B-45 - B-46 - - - - - J- S/11/81 COC*TION LOT 130 LOT 132 MT 131 SOUTH LOT 132 II 9, 130 I, a, 131 II Ia 130 SOUTH LOT 132 8, N 131 1, I8 130 CL&I”AVIOW 0‘ TLIV 106' 13.0 116.7 126.5 92 108' 12.3 117.3 126.5 92 112' 11.7 118.3 126.5 93 116' 13.0 120.4 126.5 -94 120' 13.6 122.0 126.5 96 124' 12.3 114.4 126.5 90 128' 12.3 117.8 126.5 93 132' 13.6 119.7 126.0 95 136' 11.7 116.8 126.0 92 140' 12.3 117.1 126.0 92 “0I.V”” COYlLWT * 011 wt. lllL0 D‘“.,,” UC LAmOmAloRv “*UVI”. Om4Inv coI4?Act1oY Per 5 or LA.. 0‘“‘. Woodward-Clyde Consultants a , XIMPACTION TEST RESULT - - JOJ ‘NAM WOODRIDGE PHASE 11, UNIT 5 DATE REPORTED 5/14/81 Jo8 NUMWR 592072-FC02 OATESCOVERED DECEMBER 23, 1980 THROUGH APRIL 30, 1981 PAGE 1 OF 2 OAT‘ - DEC 23 -- DEC 24 - DEC 29 - DEC 30 DEC 31 - -JAN 5 - JAN 6 - JAN 8 JAN 9 24 LOT 135 82' 13.6 --IAN 27 - "EB 2 - JAN 3 _- v8aT “SVLW l.OCATIOH ELLVATIOH N”Y.C” 0, or Ve.IT --*t-5/8/81 1 2 LOT 130* 52' 10.5 PRIVATE ST., OPP. L-133* 60' 9.1 3 4 5 PRIVATE ST., OPP. L-131 72' 11.7 *a 11 ,, L-134 76' 13.0 ,I II I, L-137 80' 10.5 6 PRIVATE ST., OPP. L-132* 64' 10.5 7 II I, II L-132 76' 11.7 8 I, 8, II L-136 a2 12.3 9 10 11 PRIVATE ST., OPP. L-131* 58' 13.0 LOT 134* 66' 10.5 PRIVATE ST., OPP. L-133 80' 11.1 12 13 14 56' 13.0 64' 13.6 66' 13.0 15 16 17 18 LOT 130* PRIVATE ST., OPP. L-131 II II 14 L-133 PRIVATE ST., LOT 130* MT 130 LOT 136 16 LOT 130 ‘ LOT 130* LOT 132* LOT 134* 62' 10.5 72' 6.0 76' 10.5 72' 11.7 19 20 21 66' 68' 70' 11.7 11.7 12.3 22 LOT 137 82' 11.7 23 LX)T 134 80' 11.1 2s LOT 138 86' 13.0 26 LOT 141 88' 12.3 27 LtOT 139 90' 11.7 28 LOT 137 90' 13.0 29 LOT 139 92' 13.6 30 LOT 140 94 ' 13.0 31 LOT 142 102' 13.0 32 LOT 133* 72' 13.6 33 LOT 130 74' 13.0 34 LOT 133 76' 12.3 * PREWOUS LOT NUMBERS WoodwardGlyde Consultants e VISLD OIH.,lV PC, LA,O”*TO”v OmdDlTI KC )I*LAr1v. COYPACVIOW H oc (A*. OKN‘. 119.5 126.0 114.4 126.0 94 90 115.2 126.0 91 119.9 126.0 - 95 116.3 126.0 92 115.9 126.0 113.8 126.0 119.9 126.0 91 90 9s 113.4 123.0 92 119.3 123.0 96 112.6 123.0 91 124:9 126.0 125.3 126.0 124.2 126.0 99 99 98 123.1 126.0 109.2 123.0 110.2 123.0 110.8 123.0 97 88 90 90 115.8 123.0 114.8 123.0 117.8 123.0 94 93 9s 114.6 123.0 112.4 123.0 93 91 120.8 126.0 95 112.8 123.5 111.3 123.5 111.9 123.5 91 90 90 113.3 123.5 112.2 119.5 111.1 119.5 113.4 119.5 91 93 93 94 122.0 126.0 96 120.4 126.0 95 115.6 126.0 91 c’o*s”L~I*o cH‘l”*I*. CIOC001.T. .ro E*vl”o*“t*l.L ‘EIIlu,#l,l .m- > .A - 30MPACTlON TEST RESULT: Jo* NAME WOODRIDGE PHASE II, UNIT 5 OATE REPORTEO - S/14/81 JCJB NUMBER 592072-FC02 -OATL~COVLRED DECEMBER 23, 1980 THROUGH APRIL 30, 1981 PAGE 2 Or 2 DAVE - FEB 25 __ - MAR 10' APR 17 APR 20 APR 21 APR 22 - APR 27 APR 28 - APR 29 - APR 30 T1.I *““.I” “171[.1 LOCATIOH 0, 3s 36 37 38 39 40 41 42 43 44 4s 46 47 48 49 so 51 52 53 54 55 56 57 58 59 60 61 62 63 64 6s 66 67 68 * PREVIOUS LOT NUMBERS ' LOT 140 LOT 138 LOT 141 LOT 139 LOT 131 LOT 132 LOT 134 mT 136 LOT;130 LOT .l'32 LOT 135 LOT 140 LOT 141 LOT 140 LOT 139 LOT 138 LOT 137, LOWER LOT 137, UPPER LOT 136, U)WRR LOT 136, UPPER LOT 135, LOWER LOT 135, UPPER LOT 134, UPPER LOT 134, LOWER LOT 133, LX)WER LOT 133, UPPER LOT 132, UPPER LOT 132, LOWER LOT 131, LOWER LOT 130, LOWER 62 LOT 132, LOWER MT 131, UPPER LOT 130, UPPER LOT 142 FG 101.3' 13.0 116.8 123.0 94 FG 101.3' 13.6 114.4 123.0 93 FG 96.3' 13.6 114.0 123.0 92 FG 96.3' 12.3 115.9 123.0 94 FG 92.0' 13.0 112.8 123.0 91 FG 101.0' 13.6 113.0 123.0 91 FG 92.0' 13.0 113.9 123.0 92 FG 101.0' 11.7 111.7 123.0 90 FG 90.0' 12.3 119.0 128.5 92 FG 99.0' 13.6 120.5 128.5 93 FG 99.0' 13.6 124.2 128.5 96 FG 90.0' 13.0 119.2 128.5 92 FG 88.0' 13.0 117.2 128.5 91 FG 97.0' 13.6 119.3 128.5 92 FG 97.0' 14.3 117..1 128.5 91 FG 88.0' 13.0 112.9 128.5 87 FG 85.0' 11.7 116.5 128.5 FG 85.0' 12.3 118.5 128.5 FG 88.0' 13.0 117.1 128.5 FG 94.0' 12.3 118.9 128.5 FG 94.0' 13.6 115.9 128.5 FG 105.0' 13.0 114.0 123.0 90 92 91 92 90 92 LLIYA,ION OF TLIT YO,.V”“I I’sLO Co”T*Hv DWl,l*V * DIV WV. nr LAmO*ATOav 0*H.,VV KC (LrnUIIVS coYc*cvlo* % 0, U.. DW.. 96 ’ 12.3 115.1 123.0 93 92’ 11.7 118.3 128.0 92 100' 14.3 112.6 123.0 91 94 ' 13.0 114.2 123.0 - 92 80' 12.3 115.1 123.0 93 82' 11.7 114.3 123.0 92 86' 12.3 115.1 123.0 93 90' 13.0 116.6 123.0 94 84' 13.0 112.8 123.0 91 86' 11.7 ;, 118.0 123.0 95 88' 13.0 112.3 123.0 91 100' 12.3 116.1 123.0 94 wt 5/a/01 Woodward-Clyde Consultants @ - dOMPACTION TEST RESULT: JOJ NAMC WOODRIDGE PHASE II, UNIT 5 -_ Jam Nuumcta 592072-FC02 (STREET) 3ATL'CoVERCD DECEMBER 22, 1980 THROUGH APRIL 26, 1981 OATE REPORTED S/14/81 PAGE s-1 Or s-1 OAT& - UEC 22 - AC 24 -lEC 29 DEC 31 - AN5 _Jm 6 26 -Sp - .- _- - - ..- - - - - It S/11/81 “0l.V”“. ,I*L* U~ORATORV I8U7IVI -n.V ll‘VE,V Loc*7lo” LLCY*TIO” CO”,.“, o*“.lTv 0IN.ll-v co”c*c7lo” ““Y.L” 0; OF 7c*v s OIV WT. PC, rcr n oc LA;. o&. S-l MONROE ST.,OPP. L-130* 50' 10.5 116.6 126.0 92 s-2 1, I’ 61 L-131* 56' 11.7 118.9 126.0 94 s-3 MONROE ST.,OPP. L-130 70' 10.5 118.5 126.0 - 94 s-4 MONROE ST., OPP. L-137 78' 12.3 115.8 126.0 91 s-5 MONROE ST.,OPP. L-133* 64' 10.5 114.1 126.0 90 S-6 MONROE ST.,OPP. L-133 76' 11.1 115.6 126.0 91 s-7 MONROE ST.,OPP. L-138 84' 12.3 115.1 126.0 91 S-8 PRIVATE ST.,OPP. L-140 95' 11.1 116.3 128.5 90 s-9 11 11 11 L-137 88' 13.6 118.1 128.5 91 s-10 11 11 11 L-132 82' 13.0 118.4 128.5 92 * PREVIOUS LOT NUMBER Woodward-Ctyde Consultants a consi, raw.2 ‘NCI*Ic”‘ GrOLOC,‘,, .*o ‘l,l”ek”E*,.C *CIc*rl,ls --- . .r ) PLASTICITY CHARACTERISTICS1 1 1 2 1 3 1 - - - Liquid Limit, % 1 32 1 22 1 24 Plasticity Index, % Classification by Unified Soil Classitication System 16 3 12 SC SM SC . t- \1 \I\ \ ZERO AIR VOIDS CURVES 150 140 130 120 110 too 9a 80 / - I- Optimum Moisture L ‘0 10 20 30 40 LABORATORY C~~pT”M~‘~ys7 TEST METHOD: 7. A LABORATORY COMPACTION TEST OBBLES “,““vEfL’ c ‘;” f SILT L CLAY 100 cl z 80 3 2~ l- g 40 a UJ d 20 pooo I ’ loo I 1 10 III IIll 1.0 0.1 III 0.01 0.001 GRAIN SIZE. mm MECHANICAL ANALYSIS DIRECT SHEAR TEST DATA Dry Derwty, pcf Initial Water Content, % Final Water Content. % Apparent Cohesion, psf Apparent Friction Angle, degrees - - - SAMPLE LOCATION 0. CANYON BOTTOM ~ CUT LQTS 123-128 CUT LOTS 90-98 4 < I= ILL SUITABILITY TESTS WOODRIDGE PHASE II, UNIT 2 - ORAWN BY: c!l CHECKED BY: t &PROJECT NO: 592072-mo2 ] DATE: 4/13/81 FIGURE NO: 1 WT 3/30/81 WOOOWARO-CLYDE CONSULTANTS 1 PLASTICITY CHARACTERISTICS) 4 1 5 1 6 1 - - - 8C 150 120 ila 1oc Liquid Limit, % Plasticity Index. % Classification by Unified Soil Classification System 44 34 NP 27 38 SM SC SC AIR VOIDS CURVES SG -I I I I I I I R Zl I I I I I I I hY\h 3’ >. K I 1 O& 1 ! I i I 1000 loo 10 1.0 0.1 0.01 0.001 GRAIN SIZE, mm MECHANICAL ANALYSIS DIRECT SH-EAR TEST DATA 4 5 6 Dry Density, pcf initial Water ‘Content, X Final Water Content. % Apparent Cohesion, psf Apparent Friction Angle, degrees - - - SWELL TEST DATA 4 5 6 Initial OrY Oensitv, pcf 109 111 114 Initial Water Content, % 11 11 10 Final Dry Density, pcf 109 108 112 Final Water Content, % 15 18 16 Load, psf 160 160 160 -- Swell oercent n1 7 1 1-S _. , _ -. -_. _ 10 20 30 40 LABORATORY COMPACTION TEST .-* , -.- --- -1 LOTS 130-139 LABORATORY CO~f$(#QIys7 TEST METHOD: 7. A FILL SUITABILITY TESTS WOODRIDGE PHASE II, UNIT 2 DRAWN BY: ch CHECKED BY:,\ &?ej PROJECTNO: 592072-FC02 1 DATE: 4/13/81 FIGURE NO: 2 WT 3/30/U WOODWARD-CLYDE CONSULTANTS * . - 0 . - 150 PLASTICITY CHARACTERISTICS 7 Liquid Limit, % Plasticity Index. % Classification by Unified Soil Classification System NP SM 140 - - 130 - . 12a - - 110 - 1oc - 8( AIR VOIDS CURVES SG 100 p 80 $, F 2 40 a lu h 20 0 loo0 loo 10 1.0 0.1 0.01 0.001 GRAIN SIZE. mm hlECHANlCAL ANALYSIS DIRECT SHEAR TEST DATA 7 I 1 Dry Density, pcf I I I- I 1 1 lnrtral Water Content, % !- ! ! I Final Water Content, 56 I - Apparent Cohesion, psf Apparent Frrctron Angle, degrees - 1 I 1 MOISTURE CONTENT,% 1 1 I ,u\3 10 20 30 40 LABORATORY COMPACTION LABORATORY COMPACTION TEST TEST METHOD: ASTM D 1557 70 A I FILL SUITABILITY TESTS WOODRIDGE PHASE II, (MIT 2 I DRAWN BY: CHECKED BY:, PROJECT NO: 592072-FC02 DATE: 4/13/81 FIGURE NO: 3 WT 3/30/81 WDODWARD-CLYDE CONSULTANTS - - - - 12a ii0 1OC 8t Plasticity Index, % 1 6 115 I10 1 ‘“‘I I I Classification bv Unified Soil I J M-SC SC SC g 80 !I Lx60 b- , 9 PLASTICITY CHARACTERISTICS 1 2 3 Liquid Limit, % 27 33 , 28 Inn 3 I t-- = I I I ‘\Q.J 111lll\ IA i s i i i i i i 1000 loo 10 I.0 0.1 0.01 0.001 GRAIN SIZE, mm MECHANICAL ANALYSIS DIRECT SHEAR TEST DATA 1 2 3 . Dry Density. pcf Initial Water Content. % Final Water Content, % Apparent Cohesion, &f Apparent Friction Angle, degrees - - - SWELL TEST DATA Initial Dry Density, pcf Initial Water Content, % Final Dry Density, pcf Final Water Content, % Load, psf -- Swell, percent 1 2 3 107 114 12 10, 100 113 23 14 160 160 6.9 0.3 LABORATORY COMPACTION TEST I SAMPLE LOCATION I 1 CUT SL0PE.S.W. COR. SITE 2 S.W. cmER l 3 BUTTRESS CUT, S.W. COR. LA8ORATORY COMPACTION TEST METHOD: ASTM D 1557 70 A - @ILL SUITABILITY TESTS DRAWN BY: ch PUEBLO DEL OR0 PROJECTNO: 59331W-FCOl DATE: 5/14&l FIOURE NO: 1 wt S/13/81 WOODWARD-CLYDE CONSULTANTS ’ -- #, . . . . PLASTICITY CHARACTERISTICS 4 5 6 Liquid Limit, % 34 35 46 Plasticity Index. % 17 10 27 Classification by Unified Soil Classification System SC CL CL i L 100 150 130 120 ii0 lot 9c EC ZERO AIR VOlDS CURVES 0 1000 100 10 1.0 0.1 0.01 0.001 GRAIN SIZE, mm MECHANICAL ANALYSIS , DIRECT SHEAR TEST DATA 4 5 6 Dry Density. pcf Initial Water Content, % Final Water Content, % Apparent Cohesion, psf Apparent Friction Angle, degrees - - - .- - - \ L&A LVO 9r Final Water Content, % 17 21 29 Load, psf 160 160 160 -- Swell. oercent 2.7 4-R 9.3 - - I I I I I Maximum Dry 4 5 6 Density, pcf 126.5 122.0 114.5 SAMPLE LOCATION I 4 HOSP. WAY BUTTRESS 5 I?. LOT 10 6 LOT 11 LABORATORY COMPACTION TEST METHOD: A.Sl!C~ 10 20 30 LABORATORY COMPACTION TEST - FILL SUITABILITY TESTS PUEBLO DEL OR0 1 ORAWN BY: ch CHECKED BY:?ET< PROJECT NO: 59331W-FCOl DATE: 5/14/81 1 FIOURE NO: 2 A w-t 5/14/81 WOODWARD-ClY DE CONSULTANTS - . $67 Kurtz Street San Dtego. Calllornta 921 IO - 714-224-2911 WoodwarcKlyde Consultants - June 9, 1981 Project No. 592072-FC02 - Broadmoor Homes, Inc. 3911 Sorrento Valley Boulevard San Diego, California 92126 -- Attention: Mr. James Carter - FINAL REPORT OF ENGINEERING OBSERVATION OF GRADING AND TESTING OF COMPACTED FILL - WOODRIDGE PHASE II CARLSBAD TRACT 77-2, UNIT 4 LOTS 104 THROUGH 129 - CARLSBAD, CALIFORNIA - Gentlemen: In accordance with your request, and our proposal dated - January 22, 1981, we have provided engineering services in conjunction with the grading of the subject site. - SCOPE OF WORK - Our services included: - 0 Providing engineering observation of the grading operation, . - 0 Providing engineering and geologic observation of alluvial removal, 0 Performing field density tests in the placed and compacted fill, 0 Performing laboratory tests on representative samples of the material used for fill, and - 0 Providing professional opinions regarding the con- tractor's general adherence to plans. and specifications. - Consulting Engbneers C~*IogiSls at-d Enwronmenlal Sc~enl~sls - Oftlces In Other Pnnclpal CWS - . Broadmoor Homes, Inc. -. Juhe 9, 1981 Project No. 592072-FC02 - Page 2 - .- W( ‘. dward43yde Consultants SUMMARY OF GENERAL EARTHWORK AND TESTING Site, preparation, compaction, and testing were done between December 22, 1980 and May 1, 1981. In our opinion, based on our observation. and testing, the work performed during that period was in general conformance with the Speci- fications for Controlled Fill attached to our report entitled "Soil and Geologic Investigation for the Proposed Carlsbad - Tract No. CT 77-24," dated July 19, 1979. During the grading period, fill was 'placed, compacted, and tested on fill Lots 104 through 107, 115 through 121, and cut-fill Lots 113, 114, and 122 through 126. Lots 110, 111, and 112, and Lot 129 were left in their natural state. Lots 108, 109, 127, and 128 are cut lots. The grading opera- tion generally consisted of removing alluvial and loose surface soils, scarifying, watering, and compacting areas to receive fill and making cuts and fills to design grade. - - -. - During the grading operation, compaction procedures were observed, and. field density tests were made to help evaluate the relative compaction of the placed fill. Field observa- tions and results of field density tests indicate that the fill has been generally compacted to 90 percent or more of maximum laboratory dry density as determined in accordance with ASTM Test Method No. D1557-70. For reference, the approximate locations of field density tests and the limits of compacted fill have been recorded on a copy of the grading plan. The results of field density tests, expressed as a percent of laboratory dry density (relative compaction), are given on the attached forms. Laboratory tests were made on representative samples of the materials used for fill. The tests were performed to evaluate moisture density relationships, maximum dry density, optimum moisture content, grain size distribution, plasticity and swell characteristics. The results of laboratory tests are attached. u*uL1LJllIuuL IiUIlI~b ( * a .June 9, 1981 Project No. 592072-FC02 Page 3 vw 3vwr u=~yrle Consultants SUMMARY OF FINISH GRADE SOIL CONDITIONS - Fill Lots and Fill Portion of Cut-Fill Lots Inspection and laboratory tests indicate that non- ^_ expansive fill was placed within two feet of rough grade on all fill lots noted herein. - Cut Lots and Cut Portion of Cut-Fill Lots Not Undercut - Cut Lots and cut-fill Lots 113, 114, and 122'through 126 were inspected at the completion of grading. The inspection - indicated that no expansive soil is evident at rough grade surface. Nonexpansive soil is soil that swells less than three percent when compacted at 90 percent of maximum labo- ratory desnity, surcharged with 160 psf, and submerged in water. ' RECOIQlENDATIONS - Foundations for Structures on Nonexpansive Soils - We recommend that foundations for single- or two-story, multi-dwelling, residential structures placed on nonexpansive, undisturbed soil or on nonexpansive, properly compacted fill - be designed for a bearing pressure not exceeding 2,000 psf (dead plus live loads). We recommend that footings be founded at least 12 inches below finished grade and have a minimum width of 12 inches. In our opinion, this bearing pressure can be increased by no more than one-third for loads that include wind or seismic forces. - Slopes Fill slopes at the site have varying inclinations of ?- approximately l-1/2:1 to 2:l (horizontal to vertical), and are approximately ten feet high. Fill slopes were treated by over ,-- Broadmoor Homes, Inc. WI - Award-Clyde Consultants * 'June 9, 1981 . Project No. 592072-FC02 - Page 4 filling, rolling with a sheepsfoot compactor, and cut back to design grade. We recommend that structures that will not tolerate differential settlements (such as foundations, -_ swimming pools, concrete decks, walls, etc.) not be located within eight feet of the top of a slope. We recommend that - footings that are located within eight feet of the top of a slope be extended in depth until the outer bottom edge of the - - footing is eight feet horizontally from the outside face of the slope. - Additional Fill and Utility Trenches This report discusses the fill placement observed by -- personnel from our firm during the period specified. We recommend that any additional fill placed, as well as backfill - placed in utility trenches located within five- feet of a building and deeper than 12 inches, or backfill placed in any trench located five feet or more from a building and deeper than five feet, be compacted under our observation and tested to verify compliance with the earthwork specifications for the - project. We should be contacted at least 24 hours prior to backfilling operations. - Drainage We recommend that.positive measures be taken to properly finish grade each lot after structures and other improvements are in place, so that drainage waters from the lot and adja- cent properties are directed off the lot and away from foundations, floor slabs, and slope tops. Even when these measures are taken, a shallow ground water or surface water condition can and may develop in areas where no such water condition existed prior to site development; this is particu- larly true where a substantial increase in surface water infiltration results from landscape irrigation. - - . Broadmoor Homes, inc. WC ? IwardGlyde Consultants G - June 9, 1981 1, Project No. 592072-FC02 .' Page 5 - LIMITATIONS - The elevations of compaction tests shown as finished grade (FG) tests on the attached forms correspond to the - elevations shown on the "Grading Plan for Carlsbad Tract #77-2, Unit 4," dated February 14, 1980, prepared by Roy L. Klema Engineers, Inc. Elevations and locations used in this - report were based on field surveys done by others. The soil conditions described in this report are based on - observations and periodic testing. This office should be notified of any indications that soil conditions are not as - described herein. We will inspect foundation excavations for each lot if we are requested to do so. - For this report, rough lot grade is defined as that grade set in the field by the grade checker from reference stakes .- established by the surveyor, and represents rough grade at the time we were inspecting the grading operation. The conclusions and opinions drawn from the test results - and site inspections apply only to our work with respect to grading, and represent conditions at the date of our final - inspection. We will accept no responsibility for any subse- quent changes made to this site by others, or by uncontrolled - action of water, or by failure of others to properly repair damages by uncontrolled action of water. - If you have any questions, please give us a call. - Very truly yours, WOODWARD-CLYDE CONSULTANTS - _ EYES? SCH/DT/eej Attachments - (4) --_-- b, -,* a* C. - ’ JOMPACTION TEST RESULT! - OJNhMC WOODRIDGE PHASE II, UNIT 4 DATE Rf.?ORTED (i/9/81 o NUMBER 592072-Fc02 (STREETS) W-~=W~IQED JANUARY 27, 1981 THROUGH FEBRUARY 3, 1981 PACE s-1 or S-l “**.I”“S llCl.0 LA.O”ATO”I “‘UT11, o*v= n9v “‘TEST LOCATlOH LLEVIIIOW COWllllT 0‘1.1,” O~“.lll coYc*cT,oY - WUY.‘” 0, QC TCll s on* WT. ?cf KC * or LA.. O‘“.. --- -~ iN 27 S-l MONROE ST.,OPP. L.OT 104 82' 11.7 113.3 121.0 94 s-2 II ,a 88 u - 107 78' L3.6 112.6 121.0 93 s-3 8, 0, II ., 111 73' 13.0 113.8 121.0 94 ZB 3 s-4 MONROE ST.,OPP. LOT 106 80' 13.6 115.4 126.0 -91 c - - - ! 27/81 Woodward=Clyde Consultants @ CcJ*.rLII*C t.“Glc.&‘“. ~cOLOCI*r, ..,D s~.“‘““*L,II,.L sCa.*ll.l, / - OMPACTION TEST RESULTS -JO& NAML WOODRIDGE PHASE II, UNIT 4 DATE RFPORTEO 6/5/81 Jo8 Nuuarn 592072-FC02 --DATE~COww FEBRUARY 4, 1981 THROUGH MAY 1, 1981 PAGE 1 Or 2 \ OATrn - FEB 4 - - 'EB 27 - - MAR 9 - - MAR 24 - -APR 3 - APR 7 - -APR 8 - APR 27 -APR 28 - nar NUM.‘” 1)g11*1 LOSAT,OH 0, vILcY*,Iow 0, TCST “01.7”“‘ CO”Tl”, * DIT VT. CIILO OltN.lTl PC? UmonAronT “SUTI”. O*W.Wl COYCICT,OW KC x or U.. OW.. 1 LOT 106 80’ Il.7 114.8 126.0 2 LOT 105 84' 10.5 115.1 126.0 3 LOT 107 84' 13.6 115.3 126.0 4 LOT 104 88' 12.3 117.8 126.0 5 6 7 8 9 10 11 12 76' 13.6 112.7 123.0 91 76' 12.3 113.0 123.0 91 80' 11.7 112.1 123.0 91 80' 12.3 112.4 123.0 91 82' 11.7 113.7 123.0 92 84' 11.7 114.3 128.5 90 86' 12.3 114.4 128.5 90 84' 11.1 120.0 128.5 93 13 14 15 16 17 18 19 20 LOT 118, LOWER LOT 116, LOWER LOT 115, LOWER LOT 117, IXlWER LOT 119, LOWER LOT 118, UPPER LOT 116, UPPER LOT 120, LOWER ' LOT 113, UPPER LOT 115, UPPER LOT 117, UPPER LOT 121 LOT 119, UPPER LOT 122 LOT 106 LOT 105 86' 13.0 120.4 128.5 93 90' 13.6 122.0 126.0 94 92' 12.3 115.1 126.0 91 90' 12.3 120.2 128.5 93 94' 13.0 124.9 128.5 97 94' 11.7 118.9 128.5 92 88' 10.5 119.3 126.0 94 90' 11.7 114.7 126.0 91 ?1 22 23 24 31 LOT 104 LOT 105 LOT 106 MT 107 LOT 113, UPPER LOT 114, UPPER LOT 115, LOWER LOT 115, UPPER LOT 116, LOWER LOT 116, UPPER LOT 117, LOWER LOT 117, UPPER LOi' 117, LOWER LOT 118, LOWER LOT 118, UPPER LOT 119, LOWER LOT 120, LOWER LOT 121, LOWER LOT 122, LOWER FG 92.5' 13.6 122.0 126.5 96 FG 92.5' 11.7 118.3 126.5 93 FG 92.0' 12.3 114.4 126.5 90 FG 92.0' 13.0 116.6 126.5 92 25 26 27 28 FG 90.8' 11.1 120.0 128.5 93 FG 90.8' 12.3 120.7 128.5 93 FG 82.9' 11.7 122.1 128.5 95 FG 21.9' 12.3 118.0 126.0 93 29 30 31 32 FG 82.9' 13.5 113.5 126.0 90 FG 91.9' 16.7 116.7 126.0 92 FG 84.0' 11.2 111.2 126.0 82 FG 93.0' 17.4 117.4 126.0 93 33 34 35 FG 84.0' 11.7 117.7 128.0 FG 84.0' 12.3 121.5 128.0 FG 93.0' 11.1 118.6 128.0 36 37 FG 86.0' 13.6 117.2 128.0 FG 86.0' 13.0 120.7 128.0 38 39 FG 96.3' 12.3 120.5 128.0 FG 96.3' 11.7 120.8 128.0 91 91 91 93 - 91 94 92 91 94 94 94 Woodward-Clyde Consultants A s co*~“l,l*c ENClltl‘“‘ CEoLOtl.Is .*a ‘*.I”O~“~UI.,. .CIc*11*,, _-. / -- ,I . ‘. .OMPACTION TEST RESULT: -JOJ NAM@ WOODRIDGE PHASE II, UNIT 4 DATE REPORTED 6/5/81 Jo8 NUM~LR 592072-FCOl - DATr'=OVEnCo FEBRUARY 4, 1981 THROUGH MAY 1, 1981 PACE 2 OF 2 YO,.,““‘ CISLO U.O”.TO”” “.UII”. o*,s nm, 1&TC1? LOCI,IOC( CLI”*TIOW COWT.WT o*w.,,, OIW.ITI coYc*c,Io* W”Y.6” 0, 0, T~S, ta 011 -1. Cc, KC * or U.. ova.. APR 29 40 LOT 120, UPPER FG 95.0' 13.0 118.8 128.0 92 -- 41 LOT 119, UPPER FG 95.0' 12.3 115.8 128.0 90 APR 30 42 LOT 123, UPPER FG 113.0' 13.0 116.6 123.0 -94 - 43 LOT 124, UPPER FG 113.0' 12.3 113.0 123.0 91 LOT 125, UPPER FG 108.5' 13.6 112.3 123.0 91 - LQT 126, UPPER FG 108.5' 13.0 113.3 123.0 92 - - - - - - - - - rrt 5/27/81 Woodward-Clyde Consultants @ EO**“L~I*~ L”CI”‘L.. O‘OLOCI‘,, .*o L**l.O**.*,.L sCtl*,,,,s - . . -. - - 150 81 . 9 PLASTlClTY CHARACTERlSTlCS 1 2 3 Lmuld Llmrr, JI 32 22 24 Plartlcity Index. % 16 3 12 Clasrlluzatlon by Unrfrcd Soil Clau8tnxtmn Svsccm SC SM SC 100 (3 z 80 3, Q l- ; 40 a w o- 20 0 VOIDS CURVES 2.70 SG 1000 loo 10 1.0 0.1 0.01 0.001 GRAIN SIZE. mm ~IECHANICAL ANALYSIS DIRECT SHEAR TEST DATA 1 2 3 Dry Densrty. pcf Initial Water Content. % Final Water Content, % Apparent Cohesron, p5f Apparent Frictron Angle. degrees - - - . 7 SWELL TEST DATA 1 2 3 Initial Dry Density, pcf 118 Initial Water Content. % 11 Final Dry Density. pcf 116 15 I Y \l\A ~, _ , _ ,=, I ! Swell. percent I - I - 1 1.5 \ I 11 10 20 30 40 LABORATORY COMPACTION TEST 3 1 CUT LOTS 90-98 I LABORATORY C?M&$,CJ10#57 TEST METHOD: 7. A * ‘FILL SUITABILITY TESTS DRAWN BY: ch WOODRIDGE PHASE II, UNIT 2 CHECKED BY:’ pt.p$j-Pfto~ECT No: 592072-Co2 1 DATE: 4/13/81 FIGURE NO: 1 WT 3/30/81 WOODWARD-CLYDE CONSULTANTS l -. - . . - 1 PLASTICITY CHARACTERISTICSI 4 1 5 1 6 1 1 Llwld Llmct. ‘6 I - 144 134 I - - - - 150 lr)C I 3c I 2f I If 101 9 81 )- )- I- 3 Plarlw2ty Index. W Cloulfcatlon by Unified Soil Clasrrfrcatron System NP 27 18 SM SC SC . ZERO AIR VOIDS CURVES ’ I : MY , ’ ! 6,4sm 1000 loo 10 1.0 0.1 0.01 0.001 GRAIN SIZE. mm AIECHANICAL ANALYSIS . -z-T-l - DIF \ECT SHEAR TEST DATA I I 4 I3 ItI, Dry Densrty, pcf Initial Water Content, 46 Final Water Content, % , Apparent Cohesion. psf I - . Apparent Friction Angle, degrees - - - l--t---L-t~?ukw 3 ! . * \I w 1 1 , . ELL TEST DATA 4 3 0 Initial Dry Density, pcf 109 111 114 Initial Water Content, % 11 11 10 Final Dry Density. pcf 109 108 112 Final Water Content, % 160 160 160 Swell, percent .Ol 3.1 1.5 Maxrmum Dry 10 20 30 40 LABORATORY COA”$CJ’O#5- __ _ LABORATORY COMPACTION TEST TEST METHOD: I IV H I FILL SUITABILITY TESTS I WOODRIDGE PHASE II, UNIT 2 ORAIlN8y: ch CHECKED BY: ,\ \eel PROJECT NO: 592072-FC02 1 DATE: 4/13/81 FIGURE NO: 2 WT 3/30/81 WOOOWARO-CLYDE CONSULTANTS - PLASTICITY CHARACTERISTICS I I r ZERO AIR VOIDS CURVES - - - - - SWELL TEST DATA 110 7 I I I Initial Dry Density. pcf 1 115 Initial Water Content % -- --..-. .- I 0 11; I I ! \ Final Drv Den! sity. pcf 6 -+.- I I Final Water Content, % 14 1OC t- I I Load, psf 160 !li t -- Swell, percent I 0.4 I 1 I I I I I i I I I I I 1 I I I I L I I I I I 9c 1. I I I I 1 1 1 ’ I r i\l Maximum Drv 7 A SAMPLE LOCATION 1 7 1 J BUTTRESS U3TS 130-139 I 8C ‘0 r IO 20 30 40 LABORATORY COMPACTI ION LABORATORY COMPACTION TEST TEST METI .lrn.. n +JD: Hb-1-N IJ 1557 70 A Lrourd Limit. X Plasttcrtv Index. % Clautficatron by Untficd !kril Classrlrcation Svrtem NP SM 2.70 SG . (3 z 80 9 am I- ; 40 a : 20 0 1000 loo 10 1.0 0.1 0.01 0.001 GRAIN SIZE, mm MECHANICAL ANALYSIS DIRECT SHEAR TEST DATA 7 Dry Density, pcf Initial Water Content, % Final Water Content, % Apparent Cohesion, psf Apparent Friction Angle, degrees - FILL SUITABILITY TESTS WOODRIDGE PHASE II, UNIT 2 - ORAWN BY: CHECKEO BY:, PROJECTNO: 592072-FC02 DATE: 4/l 3/81 FIGURE NO: 3 A WT 3/30/81 WOOOWAAD-CLYDE CONSULTANTS , -. -, 9’ l - . . - - - PLASTICITY CHARACTERISTICS 1 2 3 Liqutd Limit. X 27 33 28 PII~IICIIV Index. X 6 15 10 Clawficaflon by Umficd soil Clars~lical~on Svstsm SM-SC SC SC , VOIDS CURVES 100 ‘i fi 40 a ii! 20 1000 loo 10 1.0 0.1 0.01 0.001 GRAIN SIZE, mm MECHANICAL ANALYSlS 1 SAMPLE LOCATION CUT SL0PE.S.W. COR. SITE 2 s.w- -El? PUTTRESS CUT, S.W. COR. 10 20 30 40 LABORATORY COMPACTION LABORATORY COMPACTION TEST TEST METHOD: ASTM D 1557 70 A f FILL SUITABILITY TESTS PUEBLO DEL DR0 DRAWN BY: ch PROJECTNO: 59331W-PC01 wt S/13/81 WOOOWARO-CLY DE CONSULTANTS a-. . ’ . .’ . I * PLASTICITY CHARACTERlSTlCS 4 5 6 L8ouKl Limit. ?4 . 34 35 46 l’lasrtc~~y Index. % 17 18 27 Cla,rr~ltcat~on by Unified Soil _ Classllicatlon Svstcm SC CL CL 140 130 DIRECT SHEAR TEST DATA . ! I Dry Density, pcf Ltr f- Initial Water Content, % / Final Water Content, % 120 i I Apparent Cohesion, psf Apparent Friction Angle, degrees - - - - ii0 lot I - - - 8C )- 0 10 20 30 40 LABORATORY COMPACTION LABORATORY COMPACTION TEST TEST METHOD: AsTMDlfj51 - FILL SUlTABlLlTY TESTS c ZERO AIR VOtDS CURVES loo0 loo 10 1.0 0.1 ‘0.01 0.00 GRAIN SIZE, mm MECHANlCAL ANALYSIS SAMPLE LOCATION IIOSP. WAY BUTTRESS -SIDE. LOT 10 PUEBLO DEL OR0 i - ORAWN BY: Ch 1 CtiECKEOtSY:~~l<1 PROJECTNO: '59331W-FCOl 1 DATE: 5/14/81 1 FtOURL NO: 2 . wt S/14/81 WOODWARD-CLYDE CONSULTANTS , .r . I. *., _ 6: 3467 KWTZ Strut San Dego. Calltornca 92110 714-224-2911 Tekx 6974341 . -: . April 13, 1981 Project No. 592072-FC02 i Broadmoor Homes, Inc. 3911 Sorrento Valley Boulevard Suite B San Diego, California 92111 Attention: Mr. James Carter - -It--- --_. -- FINAL-&PORT OF ENGINk%RING .--. _ OBSERVATION OF GRADING AND TESTING'OF COMPACTED WOODRIDGE PHASE II CARLSBAD TRACT 77-2, UNIT 2 LOTS 36 THROUGH 65 HOSP WAY CARLSBAD, CALIFORNIA Gentlemen: In accordance with your request, our . - w.- FILL -- -a _- proposal dated January 22, 1981 atid your Contract No. 0560, we have provided engineering services in conjunction with the grading of the subject site. SCOPE OF WORE qur services included: - 0 Providing engineering obsenration -of the 'grading operation, 0 Performing field density tests in the placed and compacted fill, 0 Performing laboratory tests on representative samples of the material used for fill, 0 Providing engineering observation of the excavation and recompaction of loose surface soils, and 0 Providing professional opinions regarding the contractor's general adherence to plans and specifications. / . Consumg Engwers. Geologists and Enwronmental SWmStS -- . . Broadmoor Home>, Inc. *, April 13, 1981 Project No. 592072-Fe02 Page 2 Woodward=C!yde Consultants SHMMARY OF GENERAL EARTHWORK AND TESTING -. . - Site preparation, compactiion, and testing were done between January 7 and March 19, 1981. Inr'our opinion, based on our observation and testing, was in general the work performed during that period conformance with the Specifications for Controlled Fill attached to our r&port entitled "Soils and Geologic Investigation for the Proposed Carlsbad Tract No. CT 77-2," dated July 19, 1979. _ .--. : :f During the grading period, fill was placed, compacted, and ,z--- - tested on--fill lots 46, 47,-54 and 55 and the fill portions of cut/fill lots 36 through 40, 43, 44;'-45;48 through 53; 56 and --- 63 through 65. Lots 41, 42 and .57 through 62 are cut lots. Lots 66 and 67 are not designated as building lots and were either cut-fill, cut or the grading operation essentially consisted of scarifying, watering and compacting areas to receive fill followed by making cuts and fills to design grade. During the grading operation, compaction procedures were observed, and field density tests were made to help evaluate the relative compaction of the placed fill. Field observa- tions and results of field density tests indicate the fill has been generally compacted to 90 percent or more of maximum dry laboratory density as determined in accordance with ASTM Test Method No. D1557-70. For reference, the approximate location of field density tests and the limits of compacted fill have been recorded on a copy of the grading plan. The results of field density tests, expressed as a percent of maximum lab- oratory dry density (relative compaction), are given on the attached forms. Laboratory tests were made on representative samples of the materials used for fill. The tests were performed to evaluate moisture density relationships, maximum dry density, optimum moisture content, grain size distribution, and plasticity, strength, and swell characteristics. The results of lab- oratory tests are attached. SUMMARY OF FINISH GRADE SOIL CONDITIONS Fill Lots and Fill Portion of Cut-Fill Lots . Inspection and laboratory tests indicate that nonexpansive . fill was placed within 2 feet of rough grade on all fill lots and the fill portion of all cut/fill lots noted herein. ,* Inc. - , Broadmoor Homk, . April 13, 1981 Project No. 592072-FC02 Page 3 WoodwardClyde Consultants Cut Lots/And Cut Portion of Cut/Fill Lots _.. . cut Lots 41, 42 and 57 through q2 and the cut portion of cut-fill lots 36 through 40, 43, 44: 45, 48 through 53, 56 and 63 through 65A were inspected at the completion of grading. The inspection indicated tha" L no expansive soil is evident at rough grade surface. - - ._--- RECOMMENDATIONS . . . :: Foundations for Structures on Nonexpansive Soils: . ,=------ Lots-36 Through 6.5 .___ _ - -- .._ -. _ m. w-- -- -- i . We recommend that foundations for single- or two-story (multi- dwelling) structures placed on nonexpansive, undisturbed soil or on nonexpansive, properly compacted fill be designed for a bearing pressure not exceeding 2000 psf (dead plus live loads}. We recommend that footings be founded at least 12 inches below finished grade, and have a minimum width of 12 inches. In our opinion, this bearing pressure can be increased by no more than one-third for loads that include wind or seismic forces. . '. Lots 56 and 57 are bounded on the west by nearly vertical, I _:" t natural bluffs with heights on the order of 20 feet. We recommend that the building locations or foundations be designed as follows: a) Situate the buildings so that the foundations are east of a 1 to 1 inclined line extending up and . easterly from the base of the bluffs, or b) If the building locations cannot be- adjusted, place the buildings on drilled piers. The piers should be extended a minimum of 5 feet below the 1 to 1 inclined line extending from the base of the bluffs ahd should be a minimum of 2 feet. in diameter. Piers can be designed for an allowable soil bearing pressure of 5000 psf. / . We recommend that the lots be sloped at a minimum of 1 percent to the streets and that no water be allowed to drain over the. face of the bluffs. Even with these provisions we anticipate that small block falls will continue from the bluff face, and that remedial work may be necessary in the future. . . . , .I. ' Broadmoor Homes, Inc. . April 13, 1981 Project No. Page 4 592072-FC02 , _. -_-.-- WoodwardGyde Consultants Slopes Fill slopes at the site fi ave inclinations of approximately l-1/2 to 1 and 2 to 1 (horizontal'to vertical), and are ap- . . proximately 10 feet high maximum. Fill slopes were treated - . slightly over overbudding periodically backrolling with a sheepsfoot roller and then cutting back to the design slope. _ --- We recommend that structures thatwill not tolerate differ- ential settlements (such as foundations, concrete decks, walls, swimming pools, etc.) not be located within 8 feet of ,5--- - the -top of a slope,._ We. -recommend. that footings -that are __ -- located within 8 feet of the top of a slope be extended in depth until the outer bottom edge of the footing is 8 feet horizontally from the outside face of the slope- Additional Fill and Utility Trenches . . t This report.discusses the fill placement observed by personnel from our firm during the period(s) specified. Weirecommend that any additional fill placed, utility trenches as well as backfill placed in located within 5 feet of a building and deeper than 12 inches, or backfill placed in any trench located 5 feet or more from a building and deeper than 5 feet, be compacted under our observation and tested to verify com- pliance with the earthwork specifications for the project. We should be contacted at least 24 hours prior to backfilling operations. Drainage We recommend that positive measures be taken to properly finish grade each lot (after structures and other improvments are in place), so that drainage waters from the lot and adjacent properties are directed off the lot and away from foundations, floor slabs, and slope tops, Even when these measures are taken, a shallow ground water or surface water condition can. and may develop in areas where no such water condition existed prior to site development; this is par- ticularly true where a substantial increase in surface watei- infiltration results from landscape irrigation. LIMITATIONS The elevations of compaction tests shown as finshed grade (FG) tests on the attached forms correspond to the elevations, shown . . . - . Broadmoor Hode=, Inc. . April 13, 1981 Project No. 592072-FC02 Page 5 I' WoodwardGyde Consultants on the "Grading Plan for Carlsbad Tract 77-2, Unit 2." dated 'December 5, 1979, prepare$ by Roy L. Klem?, Engineers Inc. Escondido California. Elevations pnd locations used in this report were based on field surveys done by others. . . . -. The soil conditions 'described in z the report are based on observations and periodic testing. This office should be notified of any indications that soil -conditions are not as described herein. We will inspect foundation excavations for each lot if we are requested to do so. . -=---- For.-this report,rough lot-grade isdefined as that-grade set __ _ in the field by the surveyor, and represents rough grade at the time we were inspecting the grading operation. Likewise, the indicated depths of placement of nonexpansive soil were based on the measurements made by and grades set by the con- tractor's grade checker. :'w The conclusions and opinions draw from the test results and site inspections apply only to grading, our work with respect to and represent conditions at the date of our final inspection. We will accept no responsibility for any sub- sequent changes made to this site by others, or by uncon- ' trolled action of water, or by failure of others to properly ~ , .". , repair damages by uncontrolled action of water. . If you have any questions, please give us a call. Very truly yours, WGGDWARD-CLYDE coxwmms &a, - . / . Mr. Richard P. While R.E. 21992 ' RPW/EHP/kb Attachments . . l I COMPACTION TEST RESULT3 JO.B NAML WOODRIDGE PHASE II, UNIT $2 Dhre RLFORTEO 4/13/81 Jor NUMIER 592072-x02 DATC¶ COVERED JANUARY 7, 1981 TEiX0UGi-I MAFtCH 11, 1981 PAGE 1 O? 2 MTK T&ST ‘WY.‘” II YOI.T”“K LLCVATIB* ?ILLD LAsOR*TomY COMTCW? DIllDIm mKUTI*L DKWSl~ oc TLST ‘* DrnT WI. rcr COYMclIO* KI 3; or us. DCM‘. JAN 7 -. 1 2 JAN 8 3 4 JAN 9 JAN 12 JAN 13 JAN 14 . . . / JAN 15 JAN 16 JAN 19 JAN 20 nwrst 01 --_. -- 5 LOT37-- ---- _- 144 '. '- i-2.3 6 WT 38 146' 11.1 7 LOT 36 146' 11.7 up.1 126.0 119.6 126.0 120.0 ---126-O 119.9 126.0 115.0 126-O -- 95 - 95 91 8 LOT 46 156' 8.7 113.9 123.0 92 9 LOT 48 160' 11.1 111.5 123.0 - 90 10 LOT 47 162' 12.3 117.2 11 LQT 45 146' 13.0 114.0. 12 LOT 44 152' 12.3 115.1 i 123.0 123.0 123.0 95 92 93 13 14 15 16 17 18 15 LOT 46 164' 13.0 116.7 126.0 92 LOT 47 168' 11.7 115.6 126.0 91 LOT 64 170' 10.5 110.7 126.0 87 MT 53 166' 12.3 118.3 126.0 93 LOT 52 170' 13.0 116.3 126.0 92 MT 64 170' 11.1 114.9 126.0 91 19 LOT 66A, OPP. LQT 46 166' 13.0 116.6 123.0 94 20 LOT 49 172' 12.3 114.1 123.0 92 21 LOT 46 172' 11.1 113.8 123.0 92 l 22 LOT 48 174' 11.7 113.6 123.0 92 23 LOT 45 156' 12.3 114.7 123.0 93 24 *LOT 51 172' 13.0 25 IDT .50 174' 11.7 26 MT 65 172' 12.3 27 LOT 54 170' 11.7 113.8 123.0 92 111.0 123.0 90 111.1 121.0 91 110.8 121.0 . 91 28 29 30 31 32 LOT 63 LOT 65 LOT 64 LOT 36, UPPER LEVEL FG LOT 37, (( w FG 174' 12.3 114.3 123.0 92 176' 13.0 114.2 123.0 92 176' 13.6 115.4 123.0 93 147.2' 13.0 113.9 121.0 94 . 147.2' 13.6 115.9 121.0 96 33 34 35 36 37 38 35 LOT 38, UPPER LEVEL FG 148.3' 11.7 112.8 121.0 93 LOT 39, 11 1, FG 148.3' 13.6 115.3 121;o 95 LOT 55 172' 11.7 104.3 121.0 86 LOT 56 176' 11.1 112.4 121.0 92 LOT 5s 172' 12-3 109.1 121.0 90 LOT 54 172' 13.0 115.1 121.0 95 LocATIo* LOT 38 UT 36 - IDT 39 LOT 44 138"- 13.6 122.4 126.0 140' I---. 142': 12.3 144' 13.6 97 94 94 WOOdWad-Ckk Consubnf4 St . . ! a COMPACTION TEST RESULTS . . JO,J NAME ~~DRIDGE PHASE II, UNIT 82 DATlr RePoRTeD 4/13/81 JOB NUMEW~ 592072-FC02 DAres COVERED JANUARY 7, 1981 THROUGH MARCH 11, 1981 PAGS 2 Qp 2 I MTC RKY W”Y.K” RKTLIT 0, ,JAN --il 39 40 41 42 43 . ,"?--- JAN 22 JAN 23 JAN .26 I JAN 27 I FE8 5 FEB 6 61 62 63 MAR 9 64 MAR 11 65 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 56 t LOcArIO* ~-- YO,mnJ”c r1a.D lABOMTO** COHTKMT RKUTlYL DKYSiTV DKWl)lW Y, DIT W?. COYCACTlON UI ur % 01 LAa. DKN.. LOT 44, LOWER LEYVEL FG 148e.l LOT 45, w u FG 148-O' LOT 43, UPPER LEVEL..FG 158-l" MT 44, w w FG 157,l' IX)T 43, LOWER LEVEL FG 149.1' 13.6 lL1.7 123.0 90 14.3 112.6 123-O 91 -13-g--- 112.8 121.0 93 14-3 13.6 LOT 45; UPPER LEVEi FG 157; f' 11-7 LOT 46, LOWER LEVEL FG 166.8' 13.0 MT 47, 11 n FG 166.2' 11.1 LOT 48, w w FG 167.0' 11.7 .112.4 121.0 92 Ci.5 123.0 90 -- 113..8 “'121.0 113.4 121.0 112.4 121.0 114.8 121.0 IDT 66A FG 175.0' 1.30 114.9 123.0 LOT 46, UPPER LEVEL FG 175.2' 12.3 113.3 123.0 LOT 47, m w FG 175.2' 12.3 112.6, 123.0 LOT 48, *' w FG 176.0' 13.0 112.2 123.0 .LOT 49, UPPER LEVEL FG LOT 50, *' w FG LOT 51, " w FG LOT 52, UPPER LEViL FG LOT 53, w It Fd 176-O' 13.6 112.6 123.0 175.7' 13.0 112.0 123.0 175-7' 13.6 113.4 123.0 172.2' 12.3 111.3 123-O 172.2' 13.6 106.4 123.0 IX)T 54 FG LOT 55 FG LOT 53, UPPER LEVEL FG LOT 56 FG ID2 63 FG IAT 64 FG 'LOT 65 FG IXT 40 FG LOT 56 FG 174.4' 12.3 112.3 123.0 174.4' 11.7 112.9 123.0 172;2' 11.1 111.1 123.0 178.9' 13.6 112.9 123.0 177.0' 12.3 111.5 123.0 177.0' 11.7 113.8 123.0 177.0' 12.3 111.1 123.0 148.3' 13.0 178.9' 13.6 112.0 115.1 121.0 123.0 94"' 93 92 94 93 92 91 91 91 9i 92 '._., 90 86 91 91 90 ./ 91 90 92 90 92 93 _- ^ ,-- .- WcmchvarcbCtyde Consultants e . COMPACTION TEST RESULTS Jo& NAME WOODRIDGE PHASE II, UNIT $2 DATE Reromro 4/13/81 JOB NUMBER 592072-FC02 (STREET TEST) DATLICOV~RED JANUARY 12, 1981 THROUGH MARCH 11, 1981 PAGE s-1 or s-1 1 YOIDTUR~ llCLD MTe T8ST IlKT.XT L48014TD*T =)LLATt”Z LOCATIOM CLLVAT(OI) CtUL.‘” 0, TKLT COWTRrCI DIMmiTT DcwmlTT 0, TA 011 wr. co*P4cTIo# UP UC % OC IA.. DC”.. s-1 JAyI? PRIVATE ST.,OP". L-44 S-2 JAN, 14 S-3 Jv 16 PRIVATE ST.,OPP. L-47 PRIVATE ST.,OPP. L-53 .a +.g:--- s-4 -- 'PRIVATE ST.,.OEP. L-65 FG s-5 -. IV II I, L-54 FG 173.9' 171.2' MAR 11 S-6 PRIVATE ST.,OPP. L-45 FG 145.8' 145' Z' 172' 172.' 13.0 114.5 126.0 ll.l--- 114.0 126.0 12.3 X12.6 121.0 I3.6 114.0 . ..123.0 -- 13.0 112.0 123.0 13.6 114.9 123.0 90 90 93 92 91 93 . , . . . I . WT 3/27/81 woodward=Ctyde Consubnts $j& COMLES “,““;:I c ‘;” f SILT b CLAY I PLASTICITY CHARACTI ERISTICS l 2 3 Liquid Limit, % 32 22 24 1 1 Ptasticitv Index. % 1 16 1 3 1 12 1 ‘--I I I I Classification by Unified Soil 1 11 I ___ 1 -_ I Classification Svstem .- ZERO AIR VOIDSCURVES loo0 loo .‘lO 1.0 0.1 0.01 0.001 GRAINSIZE, mm __ . . . . _ MECXANKA~ANALYSIS- - - - - 1 OIRECTSHEARTEST DATA 1 - 1 1 2 1 3 1 t i i Dry Density, pcf ’ I I - _ Initial Water Content. % - - t - Final Water Content, % Apparent Cohesion, psf Apparent Friction Angle, degrees - - - SWELL TEST DATA _ 1 2 3 Initial Dry Density, pcf 118 ./ Initial Water Content. % 11 Final Drv Densitv. ocf 116 Final Water Content, % 15 Load, psf 160 Swell, percent 1 - \ - il.51 t SAMPLE LOCATION 1 TC)T -CANYON BOW 2 CUT U)TS 123-128 Maximum Dry L Ocnsi ty, pcf 126.0 123.0 128.0 ‘c, \ Optimum Moisture lkbh Content, % 10.0 11.0 10-f ‘I’ ’ ’ ’ )O , 1 1 1 1 MOISTURE CONTENT,% i i 1 i i ,:q 10 20 30 40 3 1 CUT LOTS 90-98 I LAsORAiORY COMPACTION TEST FILL SUITABILITY TESTS WOODRIDGE PHASE II, UNIT 2 DRAWN BY: ch 1 CHECKED BY:Jv\ Q&PROJECT ~0: 592072-X02 1 DATE: 4/13/81 FIGURE NO: 1 110 100 80 PLASTICITY CHARACTERISTICS 4 5 6 Liquid Limit, % 44 34 Plasticity Index, 96 NP 27 18 Classification by Unified Soil Classification System SM SC SC i A !! 2.60 I SG I 1 I I\i\;j’\ 2.50 SG - --- VOIDS CURVES . -a SWELL TEST DATA 4 5 6 Initial Dry Density, pcf 109 111 114 . I I z k 5 Initial Water Content, % 11 11 10 > I I I I Final Dry Density, pcf 109 108 112 K -I : . I I I I I I I I I I I\ ; I Final Water Content, % 15 18 16 ! I I I 11 I\ 160 160 160 Swell. percent .Ol 3.1 1.5 OBBLES yyc S;” , f SILT b CLAY 1000 100 ‘: 10 1.0 0.1 0.01 o.ocl1 GRAIN SIZE, mm . .- MECHANk-AL: ANA‘YS;S- - - -. DIRECT SHEAR TEST DATA 4 5 6 , Dry Density, pcf - - Initial Water Content, % Final Water Content, % Apparent Cohesion, psf Apparent Friction Angle, degrees - - - . Maximum Dry 4 5 Density. pcf 121.0 123.0 126.0. Optimum Moisture Cantent % 11.0 10.5 ln ni- I - 1 LOTS 42 & 43 1u.u L - 1 BUTTRESS CtJl' w. OF I I I I I I MOISTURE CONTENT. % t L0TS 130-139. 10 20 . 30 40 LABORATORY COMPACTION TEST LA8ORATORY CC&&&C#Cy$57 TEST METHOD: 7. A FILL SUITABILITY TESTS WOODRIDGE PHASE II, UNIT 2 DRAWN BY: ch PROJECT NO: 592%2-Fc02 b DATE: 4/13/81 FIGURE NO: 2 . . -i.. ?!a ,‘---’ _ 140 PLASTICITY CHARACTERISTICS COBBLES .I “,““‘:‘I c ‘;” f SILT L CLAY Liquid Limit, % Plasticity Index, % NP Classification by Unified Soil Classification System ZERO AIR VOIDS CURVES jy++2.y;;G -. _ _._ - - T- I\ 2.50 1.0 0.1. 0.01 0.001 GRAIN SIZE, mm MECHANlCAi.ANALYSIS- - - - -. lO( 9t 8( DIRECT SHEAR TEST DATA 1 I t 1 Dry Density, pcf 1’ Initial Water Content, % c % Final Water Content, % Apparent Cohesion, psf Apparent Friction Angle, degrees - 1 cbntent. % -- _- ., . I 9.51 I ---I I I II I I I\, t 'a 1 1 1 iiiiiY II I I I -+ MOISTURE CONTENT,% 1 1 1 ! 1 . !v \I u I 10 20 30 40 LABORATORY COMPACTION LABORATORY COMPACTION TEST TEST METHOD: JiST:d D 1557 70 A . FILL SUiTABiLITY TESTS 1 I J . WOODRIDGE PHASE II, UNIT 2 DRAWN BY: 1 CHECKED EY:.a PROJECT NO: 592072-FC02 1 DATE: 4/13/81’ 1 FIGURE NO: 7 3467 Kurtz Street San D~ego. California 92110 714-224-2911 Telex 697-841 March 30, 1981 Project No. 592073-FCOl Mr. James Carter Broadmoor Homes, Inc. 3911 Sorrento Valley Road Suite B San Diego, California 92111 WoodwardGlyde Consultants i . ) ? ,: _ .- I,,, “81 .,.’ . i .i;, -1 project Mgn. WOODRIDGE PHASE I FOOTING INSPECTION LOTS 1 THROUGH 20 AND 23 THROUGH 30 CARLSBAD, CALIFORNIA Dear Mr. Carter: In accordance with your request, we have examined test pits dug adjacent to existing concrete footings at the subject site. The purpose of this work was to express our opinion regarding the depth of footings and the soils into which the footings are errbedded. The footings were exposed by shallow backhoe test pits at 71 locations around the foundations. The number of pits per lot ranged from 3 to 8. They were dug by your representative and equipment on March 24, 1981 and were examined by a staff geologist from our firm on the same date. Our inspections revealed that the footings ranged in depth from 9 to 18 inches below lowest adjacent grade. However, the depth below finish floor was on the order of 20 inches in each case which indicates that fine grading has not yet been done and that additional soil will be placed adjacent to the footings to provide additional embedment; moreover the ground surface around the slabs was rough and uneven; typical of that encountered during the construction period. The soil exposed in the pits consisted of either dense natural nonexpansive soil or properly compacted nonexpansive silty to clayey sand. In our opinion the footing depths will be in accordance with our minimum recommendations following fine grading including the filling of depressed areas adjacent to the footings, at completion of building construction. The soils exposed in the pits are as anticipated in our final report. Consulting Engineers. Geologists and Enwronmental Scientists Offlces in Other Principal Cities Mr. James Carter March 30, 1981 Project No. 592073-FCOl Page 2 Woodward=Clyde Consultants If there are any questions concerning our footing inspection, please give us a call. .Very truly yours, WOODWARD-CLYDE CONSULTANTS -a- Richard P. While R.E. 21992 3467 Kurtz Street San Diego. Callfornla 92110 714-224-2911 Telex 697-841 / * ./ WoodwardGlyde Consultants - March 23, 1981 Project No. 592072-FC01 - Broadmoor Homes, Inc. 3911 Sorrento Valley Boulevard Suite B San Diego, California 92111 Attention: Mr. James Carter - BUTTRESS DESIGN WOODRIDGE UNIT 5, AREA WEST OF MONROE STREET CARLSBAD, CALIFORNIA Gentlemen: - RECEiVED r” I,, ,A ;1 :: 1$&q : Project M&s. In accordance with your request and our verbal recommenda- tions we are presenting design recommendations for the construction of a buttress west of Lots 130 through 140 in the subject subdivision. For our study we have been presented a "Supplemental Grading Plan, Carlsbad Tract 77-2 Unit 5" prepared by Roy L. Klema Engineers, Inc. dated February 1981. The grading plan indicates that the irregular topography within the slide area identified by geologists from our firm, will be graded so as to form a smooth slope with an inclination of approx- imately 2 to 1 (horizontal to vertical). Maximum vertical cuts will be on the order of 20 feet. - BACKGROUND INFORMATION Our "Soil and Geological Investigation for the Proposed Carlsbad Tract No. CT 77-2 Planned Unit Development No. 8, Hosp Grove, Carlsbad California" dated July 19, 1979, identi- fied a landslide within the hillside west of Monroe Street in the northwestern part of the site. A test boring placed at the toe of the slope did not encounter any landslide planes. Subsequent geologic investigation identified a slide plane within a cut bank along the west side of an existing dirt road near the toe of the slope. The slide plane was noted at approximate Elevation 97 (MSLD), above the test boring. Because of the difficulty involved and the large number of trees present on the hillside no additional test borings were made. The approximate limits of the landslide are shown on Fig. 1. ENGfNEERING DEPT. LIBRARY R E 6= E IV E hp City of Carlsbad *.-IF- ConsuitIng Engineers. Geologists 2075 Las Palmas Drive CaMi CA 92009-4859 ; 2 7 1981 and Enwronmental Sclentlsts Offices in Other Pnncipai Cities Cg=y OF CARLSBAD Engineering Department - i’ Broadmoor Homes, Inc. March 23, 1981 Project No. 592072-FCOl Page 2 - CONCLUSIONS AND RECOMMENDATIONS - - - - - - - - - Area 0” C(psf) f(pcf) - - - WoodwardGlyde Consultants Our geologic mapping and field investigations indicate an ancient landslide is present within the hillside west of Monroe Street behind Lots 130 through 140 and extending offsite to the north. Our field investigation did not evaluate the depth of the landslide, however, for our analysis we have assumed the slide is deep-seated. The slide plane geometry and soil shear strength parameters assumed are shown on the sketch below. TYPICAL BUTTRESS SECTION (No Scale) 140 - z : 5 120- !3 E s loo- 80 ^) Graben Neutral Block 24 0 120 10 0 120 Buttress 33 300 125 We recommend that the landslide area be treated by one of the two methods outlined below: we also recommend that all - *. Broadmoor Homes, Inc. March 23, 1981 - Project No. 592072-FCOl Page 3 WoodwatxLClyde Consultants - grading within the landslide area be observed by an engi- neering geologist from our firm to evaluate geologic conditions. - - a) If during grading the slide plane is found to be shallow we recommend that the landslide be com- pletely removed. b) If the slide plane is deep-seated we recommend a drained buttress be constructed within the limits shown on Fig. 1. A typical cross section of the buttress at the maximum section is shown on the attached "Guide Specifications for Typical Buttress." A drain should be installed at the rear of the buttressed slope as indicated. We recommend with either mitigating measure the excavated material be replaced and‘properly compacted. The stability of construction slopes should be the responsi- bility of the contractor. Grading during the rainy period may cause construction slope failures. - If you have an questions, please call us. Very truly yours, WOODWARD-CLYDE CONSULTANTS Richard P. While R.E. 21992 - RPW/MRR/mam Attachments (2) GUIDE SPECIFICATIONS FOR TYPICAL BUTTRESS - I. DESCRIPTION - - Buttresses consisting of compacted, granular fill shall be installed as shown on the plans in accordance with these specifications, unless otherwise specified by the engineer. Typical cross sections are shown on the sketch. II. CONSTRUCTION - The buttresses shall be composed of compacted, granular material as described in the report recommendations. - Chimney drains consisting of filter gravel and perforated pipe shall be installed as shown on the sketch. - III. PERFORATED PIPE AND FILTER GRAVEL .- Collector pipe shall be 6-inch diameter, perforated, thick walled ABS or PVC pipe sloped to drain to outlet pipe. Outlet pipe from buttress shall be nonperforated and should slope at 1 percent minimum to drain to a convenient outlet. - Filter material for use in backfilling chimneys and around and over drain pipe shall consist of clean, coarse sand and gravel or crushed stone conforming to the following grading requirements. Sieve Size Percentage Passing Sieve 1 " 3/4" 3/8" 4 8 30 50 200 100 90 - 100 I. 40 - 100 25 - 40 18 - 33 5- 15 o- 7 o- 3 This material generally conforms with Class II permeable material in accordance with Section 68-l-025 or combined aggregate. section 90-3.04 of the Standard Specifications of the State of California, Department of Transportation. - IV. LAYING Trenches for drains shall be excavated to a minimum width - equal to the outside diameter of the pipe plus 1 foot and to the depth shown on the plans or as directed by the engineer. The bottom of the trench shall then be covered full width by .- - 4 inches of filter material and the drain pipe shall be laid with the perforations at the bottom and sections shall be joined with couplers. The pipe shall be laid on a minimum slope of 0.2 percent. I - - After the pipe has been placed, the trench shall be back- filled with filter material to the elevation shown on the plans, or as directed by the engineer. SKETCH DETAIL OF MAXIMUM SECTION (No Scale) lb* Maximum 0 2 . 1 t\\ '.71 1 (or flatter) 0 " . n .T ' Filter uravel / . $H chimney-drai I Minimum -'-'7h Grade t 20' -I Maximum LATTICE LAYOUT OF BUTTRESS DRAINS 24" - .z (No Scale) Minimum Collector Drain Pipe - qinimum encasement Seepage collector pipe Flinimum 6" diameter f Bottom of Buttress Excavation