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1999-5843 G APR. 13. 2000 1:49PM CTE ESCOND I DO NO. 2641 P, 1/16 ~ ~ CONSTRUCTION TESTING & ENGINEERING, 2414 VINEYARD AVE, STE. G ESCONDIDa, CA 92029 (760) 746-4955 FAX (760)746-9806 INC. "' FACSIMILE TRANSMITTAL SHEET '1\). Jeff Garami FROM: Dale Binder (:I)~1PANY: City of Encinitas ])1\TE: 4/13/00 FAX NUMBER: TOTAL NO. OF PAGES INCLUDING COVER: 760-633-2818 i'IIUNE NUMJlF.R: SENDER'S REFERENCE NUMBER: 10-3028 KF: YOUR REFERENCE NUMBER: Filips Residence 0 URGENT. FOR REVIEW 0 PLEASE COMMENT 0 PLEASE REPLY 0 PLEASE RECYCLE N\ n'ES/COMMENTS. Pad compaction report attached as requested by Larry from L T Construction for residence at 1401 Akita Lane, Encinitas. DALE BI!'. )ER SOIl, FTELD MANAGER APR. 13.2000 1 :49PM CTE ESCONDIDO NO. 2641 P.2/16 CONSTRUCTION ]ÈSTING & ENGINEERING, INC. r , § ~ ~ t? § Cì ENGINEERING, INc. ~ SAN DIEGO, CA . RIVEKSIDE, fA . VENTIlKA. CA . TRACY, CA . LANCASTER, CA 2414 Vineyard Ave. 490 E. Princcland CL L64S Pac:ific Ave. 242 W.I.arch 42156IO1h 51. W, Suilc G Sui~ 7 Suilc IOS Suite F Unit K K'!Condido, CA 92029 Corona, CA '.11719 Oxnard. CA 9303.i Tracy. fA 95376 L~nc~lér, CA 93534 (760) 746-4955 (909) 371-11190 (6611 486.6475 (209) 839.28911 (661) 726-9676 1760) 746-9~ ru (~) J7J.2168~.\X (661) 486-9016 FH (2091839.28'.15 fAX (661) 72(,,9676 ~U REPORT OF TESTING OF COMPACTED FILL. BUILDING PAD PROPOSED FILIPS RESIDENCE 1401 AKITA LANE ENCINIT AS. CALIFORNIA PREP ARED FOR: MR. LARRY TRUJILLO L T CONSTRUCTION 7338 JUNCUS COURT SAN DIEGO, CALIFORNIA 92129 PREP ARED BY: CONSTRUCTION TESTING & ENGINEERING, INC. 2414 VINEYARD AVENUE. SUITE G ESCONDIDO, CA 92029 CTE Project No. 10-3028 April 11, 2000 F:\!O-.IO28\Rpl_Compac!cd Fill, Building Pad.doc GEOTECHNICAL AND CONSTRUCTION ENGINEERING TESTING AND INSPECTION APR. 1 3. 200 0 NO. 2641 ---Po 3/16 -- - 1: 50PM CONSTRUCTION ]ÈSTING & ENGINEERING, INC. eTE ESCOND I DO . , SAN DIEGO, CA 2414 Vineyard Ave. Soil. G Escondido, CA 92029 (760} 746-4955 (760) 746-9806 fAX . RIVERSIDE, CA 490 K Princcland CL Suite 7 Corona, CA 91719 1909) 371-lg90 1909) 371-2168 FA~ VENTUKA, CA 1645 Pacil1c A,'e. Suite 105 Oxnard, CA 93033 1661) 4116.6475 (661) 486-9016 fAX . 'fRACt', fA 242 W. Larch Snitd" 1ì'acy, CA 95376 (209) 839-2890 (209) 839.2895 fU . LANCASTER, CA 42156 10th SL W. Uni!K Lancas!er, fA 93534 (61111726-9676 166)} 726-9676 FAX ... April 11,2000 CTE Project No.1 0-3028 Mr. Larry Trujillo L T Construction 7338 Juncus Court San Diego, California 92129 Subject: Report of Testing of Compacted Fill, Building Pad Proposed Filips Residence 1401 Akita Lane Encinitas, California Refeœnced Report: Preliminary Geotechnical Investigation Proposed Residence 1401 Akita Lane Encinitas, California By CTE dated April 27, 1999 Mr. Trqjillo: At your request, we have performed earthwork testing during grading at the site. Attached is our report of the observations and tests perfonned to date on fill materials for the building pad. Based on our testing and observation, earthwork was perfonned in general accordance with the r~commendations provided in our referenced Preliminary Geotechnical Investigation. Respectfully submitted, CONSTRUCTION TESTING & ENGINEERING, INC. F:\IO-JO28\Rpf_Compaclcd Fill. BUIlding Pad,dol: GEOTECHNICAL AND CONSTRUCTION ENGINEERING TESTING AND INSPECTION APR. 13.2000 1: 50 PM CTE ESCOND I DO NO. 2641 P. 4/16 , '\ ... TABLE OF CONTENTS 1.0 PROPOSED DEVELOPMENT... """"" ""'" """"" "'" """""'" """" .... ........... .... """" ""'" ....1 2 . 0 F r L L P LA CEMENT.. ...... .... ..... . . ..... ... .. ..... .. .. . .. .. ... .. ... '" ..... ... ... ...... .. . "'" . .. ... .. .. . .. . . ..... . . , .. .. ... ... 1 3.0 TESTING ......,.............. .n............ .... """"""""""'" .................... """""" ........... n..... ...... .... ......1 4.0 TREATMENT OF BUILDING PAD... """"""""" .... """ """"""'" """ .......... ........................2 5.0 FOUNDATION AND SLAB RECOMMENDATIONS .........................................................2 5. I Foundations............ ......... """'" ....... ........... ............ """""""" """"" .... """"'" .......... "'..n. ...2 5.2 Foundation Setback............... ....... """" """""'" ..n......... ""'" ... ........ ........... "'" ... .... 'n... .......3 5.3 Lateral Resistance and Earth Pressures.......................n........................................,..............3 5.4 Concrete Slab-an-Grade ........... """"""""" ..... "'" "'" ..........,... ................... """""""" ......,..4 5.5 Exterior Flatwork and Improvements............................ """ ..................................... ...........4 6.0 ADDITIONAL CONSTRUCTION OBSERV A TION............................................................5 7.0 SURFACE AND SUBGRADE DRAINAGE """""""""".....................................................5 8.0 LIMIT A TrONS """ """"" ""'" ..... """""" ..................... """"""" """"'" ................ """"""""" 6 TABLES TABLE I TABLE 2 COMPACTION TEST SUMMARY COMPACTION TEST DATA FIGURES FIGURE 1 FIGURE 2 FfOURE 3 SITE INDEX MAP COMPACTION TEST LOCATION MAP RETAINlNG WALL DRAINAGE DETAIL F:\IO.JIJ211\Rpl_Compactcd Fill, Building Pad,doc APR. 13. 2000 1: 51 PM CTE ESCONDIDO NO. 2641 P. 5/16 , ^, Report of Testing of Compacted Fill. Building Pad Proposed Filips Residence 140 I Akita Lane Encinitas, California April 11.2000 Page 1 CTE Job. No. 10-3028 1,0 PROPOSED DEVELOPMENT The site is at the south end of Akita Lane, south of Fortuna Ranch Road in Encinitas, California (Figur~ I). The proposed development consists of a single-family. wood-fi'amed residential structure with an attached garage. Associated improvements include driveways, landscaping, and utilities. 2.0 FILL PLACE:rvŒNT Compacted fill was placed during recent grading to prepare the site for the construction of the proposed structure. Fill material was derived from on site sources. Fill was generally placed in compacted J ifis at or near optimum moisture content. Grading was perfonned using standard heavy- duty construction equipment. 3.0 TESTING Testing was generally performed to supplement field observations and aid in promoting compliance with the applicable project requirements. Testing of compacted fill addressed by this report was conducted between March 15 and 28, 2000. Field testing of the compacted £11 material was conducted in accordance with ASTM D2922 and D3017 (nuclear method) along with AASHTO T224 (rock correction), Results of the field testing indicate that tilJ materials were compacted to a minimum of90 % of the laboratory maximum dry density as determined by test method ASTM 0- 1557, Tabulated results of the field compaction testtng pertonned are provided in the attached Table l. R~fer~nce compal:tion values tor the tì1J materials are provided in Table II. Approximate test locations are graphlc::lIly depicted on Figure 2, f'\IO-JO2S\Rpl_Compil.;tc:d Fill. IJuilding Pad. do.; APR. 13. 2000 1: 51 PM CTE ESCONDIDa NO. 2641 P. 6/16 Report of Testing of Compacted Fill. Building Pad Proposed Filips Residence 140 I Akita Lane Encinitas. California April l i. 2000 Page 2 CTE Job. No. 10-3028 4.0 TREATMENT OF BUILDING PAD To prepare the building pad, areas receiving fill were overexcavated to the depth of competent natural material. This generally consisted of solid Jurassic Santiago Peak Volcanics. Based on site preparation and location at the site we anticipate footings will be founded entirely in properly compacted fill materials or into formational soils depending on footing depths. 5.0 FOUNDATION AND SLAB RECOMMENDATIONS 5. I Foundations Continuous and isolated spread footings embedded a minimum of 12 inches into Jurassic Santiago Peak Votcanics or 18 inches into properly recompacted fill are suitable for use at this site, However, footings should not straddle cut/fill interfaces. If transitional conditions are encountered during footing excavation reviews than mitigative measures will be required. These measures may include. but ar<;: not limited to. placing additional reinforcement or deepening footing excavations. Foundation dimensions and reinforcement should be based on allowable bearing values of 2000 pounds per square foot (pst) for footings founded on properly compacted fill. For footings founded directly on the Jurassic Santiago P~ak Volcanics an allowable bearing value 0£3000 psfmay be used to calculate foundation dimensions and reinforcement. The allowable bearing value may be increased by one third for short duration loading which includes the effects of wind or seismic tlm:c:-\. F,\I(-JO28\Rpt_Lompactc:d Fill, Building rad,uoc APR. 13. 2000 1: 51 PM CTE ESCONDIDO NO.2 6 41 P. 7/16 Report of Testing of Compacted Fill, Building Pad Proposed Filips Residence 140 I Akita Lane Encinitas, California Apri I I I, 2000 Page 3 CTE Job. No. 10-3028 Footings should be a minimum of 12 inches in width. Minimum reinforcement for continuous footings should consist of four #4 reinforcing bars; two placed near the top and two placed near the bottom. Isolated footing reinforcement should be designed by the project structural engineer. The structural engineer should also provide recommendations for reinforcement of any deepened spread footings and footings with pipe penetrations. 5.2 Foundation Setback Footings should be designed such that the minimum horizontal distance from the top of the adjacent slope to the outer edge of the footing is a minimum of 10 feet. Where this distance cannot be attained. the footings should be deepened to a depth where the horizontal distance from the face of the adjacent slope to the outer edge of the footing meets the 10-foot minimum distance. ).3 Lateral Resistance and Earth Pressures The following recommendations may be used for shallow footings on the site. Foundations placed in firm. well compacted till material or competent formation may be designed using a coefficient of friction of 0.35 (total frictional resistance equals coefficient of friction times the dead load). A design passive resistance value of 300 pounds per square foot per toot of depth (with a maximum value l)f 1200 pounds per square foot) may be used. The allowable lateral resistance can be taken as the sum of the frictional resistanœ and the passive resistance, provided the passive resistance does not ~xçeed two-thirds of the total allowable resistance. Retaining walls up to ten feet high and backfilled using generally granular soils may be designed using the equivalent nuid weights given in the Table below. 1':\ I ().J02~\R(1t_Compaclcd Fill, Building I'au,'¡nc APR, 13.2000 1: 52 PM CTE ESCONDIDO NO, 2641 P, 8/16 " R~port of Testing of Compacted Fill, Building Pad Proposed Filips Residence I ~O I Akita Lane Encinitas, California April] I. 2000 Page 4 CTE Job. No. 10-3028 ,",",""" , ," ""'"'""',":i"""""" " ::i,:\:, "';;,,;;,;" GHTS WALL TYPE LEVEL BACKFILL CANTILEVER WALL (YIELDING) RESTRAINED WALL 38 SLOPE BACKFrLL 2:1 (HORIZONTAL: VERTICAL) 60 58 90 The values above assume non-expansive backfill and free draining conditions. Measures should be taken to prevent a moisture buildup behind all retaining walls. Drainage measures should include free draining backfi 11 materials and perforated drains. Provided on Figure 3 is recommended gravel and perforated pipe drainage system. These drains should discharge to an appropriate onsite location. 5.4 Concrete Slab-an-Grade Lightly loaded concrete slabs should be a minimum of 4 inches tlúck and be reinforced with #3 or #4 reinforcing bars placed on 18 or 24 -inch centers each way. All slab reinforcement should be supported to ensure placement near mid-height of the concrete. All slab areas should be underlain by a minimum of four inches of clean. compacted sand. For all slabs. a vapor barrier consisting of a minimum often mil visqueen or equivalent membrane with all laps sealed should underlie moisture sen::¡itivc Hoor areas. The membrane should be placed at mid-height in the sand layer discussed above. 5 ,5 E~t~rior Flat\No~ and Improvements To redll¡;e the potential for distrc;:ss to exterior flatwork caused by subgrade movement. we r~col1lmenù that improvements be installed with crack-control joints at appropriate spacing as F\().)O18\RpI_Cornpill;lcd Fill. Building Pild,doc APR. 13. 2000 1: 53 PM CTE ESeOND I DO NO. 2641 P. 9/16 r, Report of Testing of Compacted Fill, Building Pad Proposed Filips Residence 1401 Akita Lane Encinitas. California April II. 2000 Page 5 CTE Job. No. 10.3028 designed by the project architect. Flatwork. which should be installed with crack control joints. includes drìveways. sidewalks, and architectural features. All subgrades should be properly moisture conditioned and prepared according to the earthwork recommendations previously given before placing concrete. Positive drainage should be established and maintained adjacent to all flatwork. Positive drainage means drainage away from improvements at a gradient of at least 2 percent for a distance of at least five feet. 6.0 ADDITIONAL CONSTRUCTION OBSERVATION All additional grading and backfilling should be observed and tested to assure confom1ance with recommendations presented herein. All footing trenches should be examined before placement of steel reinforcement. All graded slopes should be planted and maintained with erosion resistant vegetation. 7.0 SURFACE AND SUBGRADE DRAINAGE Foundation and concrete-slab-on grade performance depends greatly on how well the runoff waters drain from the site. This is tme both during construction and over the entire life of the structure. The ground surface around structures should be graded so that water flows rapidly away from the structures without ponding. The surface gradient needed to do this depends on the landscaping type. In gt:llcral, the pavements and t1owerbeds within five feet of buildings should slope away at graJíçnts of at least two percent Densely vegetated areas should have minimum gradients of five percent away from buildings if doing so is practica1. ':\1O-3028\R!I_COl11pact\:d Fill, Building P"d,doc APR. 13.2000 1: 53 PM eTE ESCOND I DO NO. 2641 P. 10/16 \, Report of Testing of Compacted Fill. Building Pad Proposed Filips Residence 140 I Akita Lane Encinitas, California April 1 J. :WOO Page 6 CTE Job. No. 10-3028 Planters should be constructed so that water from them will not seep into the foundation areas or beneath slabs and pavement. In any event, iITigation should be limited to the minimum actually necessary to sustain the landscaping plants properly. Should excessive irrigation. waterline breaks, or unusually high rainfall occur, saturated zones and groundwater may develop. Consequently, the site should be graded so that water drains away readily without saturating the foundation or landscaped areas or cascading over slope faces. Potential sources of water. such as water pipes and drains should be frequently examined for signs ofleakage or damage. Any such leakage or damage should be repaired promptly. The project Civil Engineers should thoroughly evaluate the on-site drainage and make provisions as necessary to keep surface waters from affecting the site. 8.0 LIMITATIONS As limited by the scope of the services that we agreed to perfoml. our opinions presented herein are based on our observations, test results, and understanding of the proposed site development. Our service was performed according to the currently accepted standard of practice and in a way that provides a reasonable measure of the compliance of the grading operations with the job requirements. No warranty, express or implied. is given or intended with respect to the performance of the project in any respect. Submittal of this report should not be construed as relieving the grading contractor of his responsibility to comply with the project requirements. Tht;: opportunity to be of service is appreciated. If you have any questions regarding testing conducted. observations made during construction or recommendations presented herein, please do not hl.:sitate to contact this office. F\ I O.JO2¡¡\Rpl_Compa..:I..:11 Fill, BUllllins I'ild,doc APR. 1 3. 20 0 0 1: 53 PM CTE ESCONDIDO \, . Report of Testing of Compacted Fill. Building Pad Proposed Filips Residence 1401 Akita Lane Encinitas, California April 11,2000 NO. 2641 P. 11/16 Page 7 CTE Job. No. 10-3028 Respectfully submitted, CONSTRUCTION TESTING & ENGINEERING, INc. fl-I£-¡ ð-I ~ódney D. J{¡l~, GE #2173 Geotechnical Engineering Manager "I \.~ J U~athan Goodmacher. CEG #2136 Se ior Engineering Geologist F:\!O-JO28\Rpl_Compm:tcd Fill. Building I'ad,doc APR. 13. 2000 " . Job Narne: Job Address: Date J/15/00 3/15/00 3/ I 5/00 3/15/00 3/17/00 3/17/00 J/ 7/00 3/17'00 J/17/O0 J/17/00 )/17/00 3/20/00 3:20100 3/22/00 3/22/00 3/23/00 J/23/00 3/27/00 3/27/00 3/27/00 .3í:moo ynoo ](27/00 3;27'00 .3'28/00 3/28/00 3~8/00 1: 54PM en ESCOND I DO TABLE I COMPACTION TEST SUMMARY FIL1P~RESIDEN ENC1191TAS; C Test .;,,", No. 4&\)H ." "' i1 '....' ';' j) / '.',',. .,...'.. '.'"X ~ '.. I KEYW A Y NE SIDE 2 KEYW A Y NE SIDE 3 IŒYW A Y NE SIDE 4 KEYW A Y NE SIDE 5 KEYW A Y N SIDE 6 KEYW A Y NW SIDE 7 KEYW A Y NW SIDE 8 RETEST OF # 7 9 KEYWAY @ DRIVE 10 KEYW A Y (ã) DRIVE II KEYWAY@DRIVE 12 DRIVEWAY AREA 13 DRIVEWAY AREA 14 PAD SOUTH SIDE 15 PAD NORTH SIDE 16 DRIVEWAY AREA 17 DRIVEWAY AREA NORTH 18 DRIVEWAY AREA 19 DRIVEWAY AREA 10 DRIVEWAY AREA .2 I PAD EAST OF CENTER 22 PAD NORTH SIDE 23 PAD SW CORNER 24 PAD CENTER 25 DRIVEW A Y AREA 26 DRIVEWAY AREA EAST 27 DRIVEWAY AREA WEST .. ('ISI' F\lI.U). SIT RUESI' ; 'i;I..I/JR..' El~:e~~ ,'", ,',..".!¡~~' 415,0 117.4 8.9 416,0 114,9 8,7 4[6.5 116,8 9,0 418,0 115,3 ] I J 416,5 120,0 10,( 416,0 114,9 10,8 415.0 109.4 (3.7 4]5,0 121.3 12.8 417,0 120.5 12,5 417,0 1]8,7 ]1.0 417,0 1168 107 415,0 120,9 9,2 416.0 ]21.9 8,9 417,0 1270 8,4 418.0 125,8 9.7 414.0 118,2 10,5 4[25 ]200 97 415,0 120,2 9,8 417,0 ]22.6 7,8 417,8 120,9 8,5 FG 126,0 68 FG 121.3 7.4 FG 124.0 72 FG 118.6 8.4 FG 1 ¡ 6,0 9,2 FG [24,9 7,8 FG 122,8 83 NO. 2641 P. 12/16 <<,'~~ "...,..' .....', .."....',.> . ,..,'. c~!Pít., .. 92% 90% 92% 90% 92% 90% 84%** 93% 92% 91% 92% 91% 92% 94% 93% 91% 92% 90~io 92% 91% 95% 91% 93% 91% 91% 94% 92% 2 2 2 2 3 2 3 3 3 3 2 4- 4 5 5 3 3 4 4 4 4 4- 4 3 ') 4 4 APR. 13. 2000 1: 55 PM eTE ESeOND I DO NO. 2641 P. 13/16 .. '.. TABLE II LABORATORY TEST DATA . SampIê No; . J4Pj'N~ø;~ ....'... j()b:A!ðdtçss: .,,' 124,5 12,0 Red brown silty SAND 2 127.5 12.0 # 1 With 10% rock correction 3 130.5 12.0 #1 With 20% rock correction 4 133.0 12.0 #1 With 30% rock correction 5 135.5 12,0 # 1 With 40% rock correction 1 APR. 13.2000 1: 56 PM eTE ESeOND I DO NO. 2641 P. 14/16 " . . ~~!ii. V.~Vì£:!X: .., ""., [ , 01 , .7ÔOrD . .. ~,iiJ ri":-) , '\ ¡ g 21 O~ 'b~ ~I\ '9~ I ' 18 ~ -~~ ~. ~ \ - "~ ~g .l.CJ . .r¡}. /::':./'Á.:' v I '\'¡J~ ,~ W, '.:"'/ / m \p~.¿.:/ / ',s>". .s' ~ r;;'// -----" liE -~~~ ~~. l °k"-- ,. ,..- I '" ~ -$ ~~, <~. þ\"~&.,-.r~ ~~.. it/I--' ( ,;i~('4~~. ), -; ~~.c:>~ ~t~. ~'./D..r ,/,;t;:-:'.... 1/;-f~(p,,1tei' ,; I, '- \F'" COI' ' (O,tJ ì"""""'\-o i--_. \ ~~ .sy"". ~--- S ,t!. r~ jr: ~:§ ~ j ~)~........~ ,<.,' <, ~. " II> r')J \ c:. "" ~ -t""-'J =:ì- ~ -.- / '- '." Dus\Y 11\ 57~) .g III )' ( "JI~ ,,);/è ,'" ( :, Ø3!1) ði ~ -L ~......~)'!.. ---.. IV 'f'r.-;~ l ¡;- íc.., .I '- 0 f n'I Lf;>5';§~'~,~( \ 3 (- ~ ¡r --,b ¡.4.... 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II>«IIIftIIItmQJN(; J,II,IVINBY,\lW \VI<NUG.9TI:G ESCI.>Nm{Jt)c, "'""'j""'7,".""., SITE INDEX MAP FILII'S RlsmENCE 1"01 AKJT,\ L.\NE ENCINITAS, CALIFORNIA .10 N" 10-3028 AS SHOWN 1 \11 \/'ROIBC1'S\III-JIIZW\lNUEXMAf"CNV ",10 .' APR. 13.2000 1: 57 PM CTE ESCOND I DO NO, 2641 ~ « ...J -< E- S2 -< P, 15/16 prope~ ~o~~~~ - - - - - - - - - - - - - - - - - - - - - '- -- -- -- -- -- -- ---- , ~~ "ð' =', 21 Ë; <\) 0.' 81 0., - - - - - - - - - - - ------- ------- --.- -- ------ -------- ------ .----- ---------- (&* j1Þ ~~ CON~EY1~C~~!~~~o~~~~~~~EE~~~~~~~~~~E?~(~c. ~ 20<.. VINEYARD ,'VI!NUI!. STI! G I!$CONf>IDO CA, '12020 (700) 7....."B DNOOOBR)/(,IN(', ,'FE JOII NO 10-302& ,\ é NO SCALE DATE PI 4/00 2 e APPROXIMATE TEST LOCA nON COMP ACTION TEST LOCATION MAP FrUPS REsmENCE I~OI AKlT..\ LANE ENCINITAS, C.\LIFORNJ..\ \If ~.It()BCTS\I"""2". CC IMI'LOCCNV APR, 13. 2000 1:57PM CTE ESCONDIDa NO, 2641 P, 16/16 ... ...., .' RETAINING W AL 3/4" GRAVEL SURROUNDED BY FILTER FABRIC (MlRAFI 140 N, OR EQUIVALENT) FINISH GRADE WALL FOOTING MINIMUM 6" LAYER OF FILTER ROCK UNDERLYING PIPE àit' ¡; ~~ CONSTRUCTION TESTING & ENGINEERING, me. J ""', (;E(rrsCHN1C,\L. ,INn CONSTRUCTION ENGINEERING 'rESTJIoIOINL> INSPECTION. HI~ VINEY 1M!) AVENUE. S'rEG ESCOND1IJ() ('A "2~2') (7("J)7~h"¡'¡SS 1!N000ep.R'NO.lNC RETAINING WALL DRAINAGE DETAIL fllLIrs RF..SmENCE 1401/\KIT.-\ L.,\NE ENCINIT!\S. C\LIFORNI.\ ~ r.... ~""""U""""""""."n"'M"'.ItT....""",\".. , rll' I § ~ ú I ~ t? &' Cì I ENGINEERING, INc. I I I I I I I I I I I I I I I I CONSTRUCTION ]ÈSTING & ENGINEERING, INC. SAN DIEGO, CA . 2414 Vmeyanl.Ave. Suite G Escondida, CA 92029 (760) 746-4955 (760) 746-9806 Fax CTE Job No.1 0-3028 RIVERSIDE, CA 490 £, Princeland Ct, Suite 7 Corona, CA 91719 (909) 371-1890 (909) 371-2168 Fax VEN11J RA, CA 1645 Pacific Ave. Suite 105 Oxnard. CA 93033 (805) 486-6475 (805) 486-9016 Fax TRACY, CA 242 W. Larch Rd. Suite F Tracy. CA 95376 (209) 839-2890 (209) 839-2895 Fax LANCASTER, CA 42156 10th St. W. Unit K Landcaster. CA 93534 (805) 726-9676 (805) 726-9676 Fax f\ March 22, 1999 Hydrology Study Filips Residence 1401 Akita Lane Encinitas, California Drawing No. 5842-GR Prepared For: Gary & Cindy Filips Prepared By: Construction Testing & Engineering, Inc. 2414 Vineyard Avenue, Suite G Escondido, CA 92029 ~~~~~~P:14~~ 1/\'<" "'~¿; \j. 0,- """" ~.\', ï , (;,' ,4/" oJ -1~.\ -;v ,~, ,",/"".," ;' /Á . ()'.'11::~.. t'¡ '~';j,/.zJ;.' rí'\ \ ':." \, ""', /.:.) , ~'!, \ ';'; ,;¡U J:"' . r"\ j \,,0> ,'"~I 4~B2 '" :J' " ~ ,-",.. ';\, ' ' " \ <,",1 ~".',\"\,,,".,E,- x,' ),- q ,l,__,',!""~y,ï,.,}.'",,,/ \\ ,J,'~,.., /(l,'~';' ,c,- >" '¡V\\.......{</'o' I' \¡ " ; ,/> ,,' ----- ,;. '<;';'J ",,','(.,,"'~'-'C~"l:l \\;',',),',',." /,' """,,- .,.j (.\.\ /",' r "T ,', -~"øo'L ~V",i-U~ GEOTECHNICAL AND CONSTRUCTION ENGINEERING TESTING AND INSPECTION I I I I I I I I I I I I I I I I I I I TABLE OF CONTENTS Section 0 BJECTIVE ASSUMPTIONS HYDROLOGY CALCULATIONS A TT A CHMENTS ATTACHMENT 1- PRECIPITATION MAPS ATTACHMENT 2 - INTENSITY-DURATION CHARTS ATTACHMENT 3 - HYDROLOGY MAP I I I I I I I I I I I I I I I I I I I Hydrology Study Filips Residence Encinitas, California March 22, 1999 OBJECTIVE To calculate 1O0-year flow for 1401 Akita Lane in Encinitas, California. ASSUMPTIONS 1. Flow calculations per San Diego County Hydrology Manual (1985) F:\lG-3O28\HydroIotY SIudy,doc I I I I I I I I I I I I I I I CONSTRUCTION 1ÈSTING & ENGINEERING, INC. SAN OlIGO, CA . IMISIDI, CA . YlNTVti, CA . TRACY, CA 1ANCASTD, CA 2414 VIneyri Ave. 490 Eo Prtnœbnd Ct. 1645 PadIIc Ave. 392 Y. 1mb Id. 4Z1S6101b sa. Y. SuiteG Suite 7 Suite IOS Suite 19 Valli f.tœÐdIdo. CA 92029 Corona, CA 91719 Omard, CA 93033 Trxy. CA 95376 laaster. CA 93534 (760) 7464955 (909) 371-1890 (80S) ~75 (209) 839-Z890 (80S) 726-9676 (760) 746-9806 FAX (909) 371.2168 fAX (80S) 486-9016 FAX (209) 839-Z89S FAX (80S) 72&9676 FAX BASIN 1 1. AREA (A) 43560 FT2IACRE = ~ACRES 2. COEFFICIENf OF RUNOFF (C) COEFFICIENf "C" LAND USE SOIL TYPE (1) RE S ID ENTIAL: A ~ ~ Q SINGLE FAMILY .40 .45 .50 .55 = MULTI-UNITS .45 .50 .60 .70 = MOBILE HOMES .45 .50 .55 .65 = RURAL (LOTS GREATER @= O.~5 THAN Y2 ACRE) 30 .35 .40 COMMERCIAL (2) 80% IMPERVIOUS .70 .75 .80 .85 = INDUSTRIAL (2) 90% IMPERVIOUS .80 .85 .90 .95 = C= O.~) 3. TIME OF CONCENfRA TION (TC) HIGH POINT (Hw _422..5" LOW POINT (Hd H=HH-HL= -¿1.) FEEf L = 500 FEEf 5280 FEETIMILE TC= 60 (11.9(L3)1H)°'38S+1O = _1 ), 0 MIN INTENSITY (1) FOR FREQUENCY YEAR lQ.(L MILES ,1Q,O O.OQ5 4, SEE A IT ACHMENT 1 FOR PRECIPITATION MAPS FROM THE SAN DIEGO COUNfY HYDROLOGY MANU AL A) P6 = 3 . n P2<4 = J. 0 ~ð-= _O, 'O P2<4 B) P6 (ADJUSTED) = C) I=--A,2 3,0 IN. IN/HR (SEE AITACHMENT 2 FOR INTENSITY-DURATION CHARTS) 5. RUNOFF (Q) Q=CIA=~CFS II<D -- ~ .. GEOTECHNICAL AND CONSTRUCTION ENGINEERING TESTING AND INSPECTION I I I I I I I I I I I I I I I I I I I A IT ACHMENT 1 - - - - - - - - - - - - - - - - - - -, COUllTY OF SAN 0 IEGO DEf'ARTI1f:NT OF SANITATION & FLOOD COIITIWL I I 45' -0- : 1-0- I 15' ~. I -o- j 33° --.--- .. ---' ... -. ,-- - - , P,.pnf'd by u,s, DEPARHIENjl' OF COMMERCE I I tUT'O:f^L OCI'^,~IC IINO AT, OSI'IIEWIC AO~:I:-IISTRATION : SPECIAL STUOIES URA~CII. OffiCE Of II UROLOGY. NATIONAL "'E"TIIER SERVICE .... H I » , " 301 J J'.' I 1 18' liS' , 30' 151 3D' IS' 116° , I I I - - .- - - - - - - -,.- i-' - - - - - - - - COUNTY OF SAM DIEGO DEP^RTHENT OF SANITATION & FlOOO CONTROL H t-t t ). t , 'II" 'I~ I )0' I'i I 117° , I ~i ' 101 I~' II f," I . I -~ ,. I I I I I I I I I I I I I I I I I I I A IT ACHMENT 2 D~SIGtY. CHART JNTENSITY-DURATl~ ;Þ '\: '\: m.2 a ...... x x ...... ,...., < >,1 ~ 10 ~ 2 5 6 30 . .. ~- '.'".. , Hn'lrc:; ",~~:", I I I I I I I I I I I I I I I I I I I ATTACHMENT 3