The URL can be used to link to this page

2008-877 G �°--� C I T Y OF E N C I N I T A S /j> 7 D EJ7 ENGINEERING SERVICES DEPARTMENT 505 S . VULCAN AVE. ENCINITAS, CA 92024 GRADING PERMIT PERMIT NO. : 877GI PARCEL NO. 254-413-1000 PLAN NO. : JOB SITE ADDRESS : 816 WOOD DR CASE NO. : 07041 / CDP APPLICANT NAME TENSHANG JOH MAILING ADDRESS : 29504 BERTRAND DR PHONE NO. : 858-922-6645 CITY: ENCINITAS STATE: CA ZIP: 92024- wa----- CONTRACTOR : HCH CONSTRUCTION CORP PHONE NO. : 619-850-8877 LICENSE NO. : 777545 LICENSE TYPE: B ENGINEER : CHRISTOPHER PINNOW PHONE NO. : -pp__j,_3s_ 16S� PERMIT ISSUE DATE : 6/23/08 i PERMIT EXP =OLiVER 09 PERMIT ISSUED BY: Z , INSPECT BE ------ - -- --- -- - -- -------- PERMIT FEES & DEPOSITS -- --- ---- -- - ---- ------------ 1 . PERMIT FEE 290 . 00 2 . GIS MAP FEE . 00 3 . INSPECTION FEE 1, 251 . 00 4 . INSPECTION DEPOSIT: . 00 5 . NPDES INSPT FEE 260 . 00 6 . SECURITY DEPOSIT 26, 025 . 00 7 . FLOOD CONTROL FE 170 . 00 8 . TRAFFIC FEE . 00 9 . IN-LIEU UNDERGRN . 00 10 . IN-LIEU IMPROVMT . 00 ll . PLAN CHECK FEE 00 12 . PLAN CHECK DEPOSIT: . 00 -- - --- - --- - - - - - -- --- - -- - - DESCRIPTION OF WORK - - - - - -- - -- - - - - - - - - - - - - - - --- -- -- PERMIT TO GUARANTEE BOTH PERFORMANCE AND LABOR/MATERIALS FOR EARTHWORK, DRAINAGE, PRIVATE IMPROVEMENTS AND EROSION CONTROL . CONTRACTOR MUST MAINTAIN TRAFFIC CONTROL AT ALL TIMES PER W.A. T. C. H. STANDARDS OR APPROVED PLAN. LETTER DATED JUNE 6 , 2008 APPLIES . -- - - INSPECTION --- - - -- - - -- - -- - - DATE - - -- - -- - INSPECTOR' S SIGNATURE ---- INITIAL INSPECTION wJ � 0 8 COMPACTION REPORT RECEIVED 7 Lam— O ENGINEER CERT. RECEIVED ROUGH GRADING INSPECTION ? ap FINAL INSPECTION ► ------ - ---- ---- -- --- ----- --- ---- --- - -- - - - --- - - -- ---------- -- - -- - ---- ----------- I HEREBY ACKNOWLEDGE THAT I HAVE READ THE APPLICATION AND STATE THAT THE INFORMATION IS CORRECT AND AGREE TO COMPLY WITH ALL CITY ORDINANCES AND STATE LAWS REGULATING EXCAVATING AND GRADING, AND THE PROVISIONS AND CONDITIONS OF ANY PERMIT ISSUED PURSUANT TO THIS APPLICATION. SIGNATURE DATE SIGNED max)s14A&J 6-7 '-J0 G �R5 (Y- PRINT NAME TELEPHONE NUMBER .^Y TTI MT T /1TTT? _ "1 /IT.TT.T L+n ') T f'-M'NTT 'Z !l'T LIFA THE ORIGINAL OFTHIS DOCUMENT `�/dAS RECORDED ON AUG 31, 2010 DOCUMENT NUMBER. 2010-0455610 RECORDING REQUESTED BY AND, ) DAVID L.BUTLER, COt 1NTr'RECORDER WHEN RECORDED MAIL TO: ) SAN DIEGO COUNTi'RECOR.DER'S OFFICE TIME 3:47 PM CITY CLERK ) CITY OF ENCINITAS ) 505 SOUTH VULCAN AVENUE ) ENCINITAS, CA 92024 ) SPACE ABOVE FOR RECORDER'S USE ENCROACHMENT MAINTENANCE AND REMOVAL COVENANT ENCROACHMENT PERMIT NO. 877AE A.P.N.: 25y- 4113 — /a Project No: 777-6 An encroachment permit is hereby granted to the Permittee designated in paragraph one, Attachment "A", as the owner of the Benefited property described in paragraph two, Attachment "A," to encroach upon City Property described in paragraph three, Attachment "A", as detailed in the diagram, Attachment "B". Attachments "A" and "B" are hereby incorporated herein by this reference as though fully set forth at length. In consideration of the issuance of this encroachment permit, Permittee hereby covenants and agrees, for the benefit of the City, as follows: 1. This covenant shall run with the land and be binding upon and inure to the benefit of the future owners, encumbrancers, successors, heirs, personal representatives, transferees, and assigns of the respective parties. 2. Permittee shall use and occupy the City Property only in the manner and for the purpose described in paragraph four, Attachment "A". 3. By accepting the benefits herein, Permittee acknowledges title to the City Property to be in the City and waives all right to contest that title. 4. The term of the encroachment permit is indefinite and may be revoked by the City and abandoned by Permittee at any time. The city shall mail written notice of revocation to Permittee, addressed to the Benefited Property which shall set forth the date upon which the benefits of encroachment permit are to cease. 5. City is , titled to remove all or a portion of the improvements constructed by Permittee in order repair, replace, or install public improvements. City shall have no obligation to pay for or restore Permittee's improvements. 6. Permittee agrees to hold harmless, defend and indemnify from and against all claims, demands, costs, losses, damages, injuries, litigation, and liability arising out of or related to the use, construction, encroachment or maintenance to be done by the Permittee or Permittee's agents, employees or contractors on City Property. 7. Upon abandonment, revocation, completion, or termination, Permittee shall, at no cost to the city, return City Property to its pre-permit condition within the time specified in the notice of revocation or prior to the date of abandonment. 8. If Permittee fails to restore the City Property, the City shall have the right to enter upon the City Property, after notice to the Permittee, delivered at the Benefited Property, and restore the City Property to its pre-permit condition to include the removal and destruction of any improvements and Permittee agrees to reimburse the city for the costs incurred. Notice may be given by first class mail sent to the last known address of the Permittee, which shall be deemed effective three calendar days after mailing, or by any other reasonable method likely to give actual notice.. 9. If either party is required to incur costs to enforce the provisions of this covenant, the prevailing party shall be entitled to full reimbursement for all costs, including reasonable attorney's fees. 10. Permittee shall agree that Permittee's duties and obligations under this covenant are a lien upon the Benefited Property. Upon 30-day notice, and an opportunity to respond, the City may add to the tax bill of the Benefited Property any past due financial obligation owing to city by way of this covenant. 11. Permittee waives the right to assert any claim or action against the City arising out of or resulting from the revocation of this permit or the removal of any improvements or any other action by the City, its officers, agents, or employees taken in a manner in accordance with the terms of the permit. 12_ Permittee recognizes and understands that the permit may create a possessory interest subject to property taxation and that the permittee may be subject to the payment of property taxes levied on such interest. 13_ As a condition precedent to Permittee's right to go upon the City Property, the agreement must first be signed by the Permittee, notarized, executed by the City and recorded with the County Recorder of the County of San Diego. The recording fee shall be paid by Permittee 14. Approved and issued by the City of Encinitas, California, this day of , 20 �1 Dated- 9JGeAl LMid Owner/Permitte ignat re TEAA59AN6 -XW Owner/Permittee Print Dated: 7 TAIL Y Owner/Permittee Signature PFI-CgZAill JON Owner/Permittee Print (Notarization of PERMITTEE si iLed) Dated: �LS7l�� 2D/� Peter Cota-Robles Engineering Service Director, City of Encinitas Technical Field Services, Inc. Civil Engineering& Inspection l ATTA CMAAF yr -9*44bit "A" to Covenant Regarding Encroachment Permit No.--&77--p4- 1. Tenshang Joh and Pei-Chuan Joh 2. Benefited Property: All that land as described in Grant Deed Doc. No. 2003- 0992969, Recorded on July 25,2003 in the office of the County Recorder of San Diego County. 3. City Properrty: That portion of the adjacent land to the southerly property line being six feet (6') in width, and along the entire length of said property line as shown in Exhibit "B". 4. Purpose: Encroachment for Turfblock swale in right-of-way. 1944 Kellog Avenue,Carlsbad,California 92008 (760)434-2617 Technical Field Services, Inc. Civil Engineering& Inspection March 6, 2009 City of Encinitas Engineering Services Permits 505 South Vulcan Avenue Encinitas, California 92024 Re: Engineer's Final Grading Certification for Project No. 07-041 CDP and Grading Permit Number 877 G. The grading under permit number been the atta�hedaAs substantial with the approved grading plan or as shown on Final grading inspection has demonstrated that lot of drainage to the street and/ orhe approved grading plan and that swales drain at a minimum an appropriate drainage system. All the Low Impact Development, Source Control and Treatment Control t Management Management Practices as shown on the drawing and requ' g Practices Manual II were constructed and are operatio together the required maintenance covenant(s). <� , '1 Mc.C 62262 r � ' v Ex ��361rlj Engineer of Record ow,P.E. `��' Chris ctvj�.sf�"p ..� °�r� o CAI-kg. � G Dated G Verification by the Engineering Inspector of this fact is done by the I ��ll not relieve hereon and will take place only after the above is signed and stamped the Engineer of Record of the ultimate responsibility: Engineering Inspector Dated a i 199' amarack Aeenuc. Cart had,Cailiiornia 9200 (805) 0 60- 696 08/,26/2008 09:00 6192952152 JgECERRIL FADE 02!10 Technical Field Services, Inc. { Civil Engineering&111Fpecnon AS-GRADED GEOTECBMCAE REFORT t JOH PROPERTY, 816 WOOD DRIVE ENCINITAS,CALIFORNIA 92024 PREPARED FOIL: Mr. &.Mrs. Ioh 29504 Bertrand Drive Agoura Hills, California 91301 PREPARED BY: Technical Field Services,Inc. 1944 Kcllog Avenue, Suite 103 Carlsbad, California 92005 July 15,2008 projeet No.4048 1944 K,ellvg Avenue,Carlsbad,Califorrnla 92008 (760)434-2617 08426/2008 09:00 6192952152 JFiECERRIL PAGE 03110 Technical Meld Services, Inc. Civil Engineering& Inspection July 15,2008 Project No. 4048 W.&Mrs.Joh 29504 Bertrand Drive Agoura Dills,California 91301 Subject: As�Crreded Geotechnical Report, Job Residence 816 Wood Drive,Encinitas,California 92024 A.P.N.: 254-413-10 Dear W. Joh: Tral>smtted havwith is our.As-Clradad C otwhnkal Report for the subjet project,dated duly 1 S,2t10g. 11W soils evaluation services as authorized by you includes:site obsearvation and testing during grading opera dons.This report presents our field operatiow and results of our field and laboratory tests. We appreciate the opportunity to be of service and contact forward ersigrcontinued involvement with you'I�j • Should you have questions,please Respectfully submitted, TechnieaY 1Fi d S ,Inc. � oFes„lo 4 �z Christop o ka C 6282 Principal Engineer 0 n Mrs aF CRLEr�`8 Distribution: (2)Addressers 1944 Kellog Avenue,Carlsbad,California 92008 (760)434-261'7 08426/2009 09:00 6192952152 JBECERRIL PAGE 04/10 July 15,2008 job Residence Project No.4048 816 Wood Drive,Encinitas TA_BLIE OF CONTENTS pul-e 1. E.,TMoDuCTION......................................... ............ ....................... ........... 2. SIFF,DESCRIPTION................................................. 3. SUMMARY OF FIELD EVALUATION-----......................................................... ....... 4. LIMITATIONS........ ................................................................ 5, SELECTED REFF-RENCUS.................I-------------------------------------------------------- ............ ........... Tabks Table I -Field Density Tests for Project Na.4048 -rabic 2-Moisture-Density Test ROsults OR/26/2008 09:00 6192952152 JBEGERRIL PAGE 05110 July 15,2008 Joh Residence project No, 4048 816 Wood Drive,Encinitas 1. INTRODUCITION 1iea1 evaluation and testing In response-to-your��a��° we have provided services for the proposed Project.The purposes of our services were to observe the wading opera- tion and test fill soils for suitable densities and moisture contents. We performed field and laboratory tests oof representative results amore Presented herein.a�sui�ility of compacted soils at the site.Our observati 2, SITE DESCRIMON The subject site is located at 816 Wood Drive,within Encintas,m San Diego County.The site is bound by Capri Road to the North,Wood Drive to the South,and a residential property to the East and West. The site is relatively level,and is clean and free Of debris from demolition Of the previous property im- proven 'ents. 3. SUMMARY OF FIELD EVALUA'T'ION Our engineers conducted field observations and tests during grading operations for the subject site.The contractor excavated the garage and building pad arm to a depth of three feet below grade,and to five feet outside the building line using art 863C track dozer,and a 3140 excavator. Soils encountered were medium tan brown silty said with a trace of clayey binder Exisdng$oils wem gcnerally acceptable fuc use as fill. Bottom of excavation contained dense formational sand- stone;and was scarified,moisture couditroned and compacted priory to'fill placement.An existing 3,diameter vertical seepage pit was discovered at the bottom of excavation elevation 190. The, abandoned pit measured 28 feet in depth,and was lined with hollow cinder block. The pit was properly marked and filled with 9 C.Y. of concrete slurry.The fill soils were moisture condi- tioned to within 2%of optimum,placed and compacted in 6 to 8 inch lifts with the dozer. In-situ density tests were performed during the grading operations in general accordance with ASTM D1556.Tests indicate relative compaction of 90%, or .gxeatcr. Results of the density tests arcs pre- sented in Table 1.The approximate location of the field density test is shown on Figure 1,Test Location Map. Laboratory tests were performed on representative samples of the mixed material to evaluate op- timum moisture-density relationship.The maximum dry density and optimum moisture content tests-were perrforrm.ed in general.accordwxce-with ASTM D1557,and-t1w results-mv-preeseatted in Table 2. No further grading or placement of fill has been done. Based on our observations and the results of our field and laboratory tests, it is our opinion that the site is suitable for construction of the proposed residential structure, and will provide bearing capacity required for support of the structure. 08/,2612008 09:00 6192952152 JgECERRIL PAGE 06/10 July 15, 2008 Soh Residence Project No. 4048 816 Wood Drive,Encinitas 4. LIWrATIONS The geoteclznical services outlined irl this report have been conducted ixa.accordance with current practice and the Standard of care exercised by geotechnical consultants performing similar tasks i_n this area.No other warranty, exPressed or implied, is made regarding the observations and conclusions expressed in this report. The reported test results represent values at the locations tested. It is important to note that the precision of field and-lalxaWMY tests is got exact and va�iatians should be-cxpec :The re- precision locations and elevations of the tests are estimated based on correlations with the site Q - Furtber accuracy is not implied. 2 Te"nl"I Feld eemkes,lam. 08426/2008 09:00 6192952152 JBECERRIL PAGE 0 7/10 July 15, 2008 Soh Residence Projcct No.$048 816 Wood Drive, Encinitas S, SELECTED REFERENCES . California Building Code, 2007, Ch's 16, 18, International Building Code, 2006, Ch's 16, 18, Seismic Engineering Design Provisions. 3 06/26/2008 69:66 6192952152 JBECERRIL PAGE 63/16 Judy 15,2008 Joh residence project No. 4048 816 Wood Drive,Encinitas Table 1—Field Dena i Test Result %Moistue- Dew oJ)en- T"t Nu: Material si /o 1 1 1.92 114.$ 8.5 91.5 2 1 192 115,4 9.0 92.0 3 1 194 115.6 8.2 922.1 4 1 194 116.8 9.4 93.1 5 2 Space 126,4 SS 95.4 Table 2—Maximum Density Test Results Maximum Optimum Material Description Dry Density Moisture Content Type No. X Medium biro n silty Sand(SM) 125.5 8.5 2 ClasaIl Base. 132-4. 7.5 mh�.� 2 Q8/26/2008 09:90 6192952152 JTiECERRIL PAGE 09/10 Technical Field Services, Inc. J (.�Ivjj Engineering&Insl►ection July 18;2008 City of Encinitas Engineering Services Permits 505 South Vulcan Avenue Encinitas, California 92024 Re: Engjn5er's Pad Ccrtificaton for Project NO, 07-041 CDP and Grading Permit Number 877 GI . Pursuant to section 23.24.3 10 of the Encinitas Municipal Code, this inter of Record for submitted as a Pad Certification Letter for 816 Wood�the Drive.project has been completed in the subject project,I hereby state all rough�ac�g uixezx}.ents oftlae City of Encinitas, conformance with.the approved g�adir�g p � Codes and Standards. 23.24.301 (B). The pad elevation as field verified and shown on the approved grading plan is measured,to bi-- L94-0 for the main.house,.and_19I A)for Air-garage unit. 23.2.4.301 (B)1 -Construction of line and grade for all engineered drainage devises have been field verified and are in substantial conformance with the subject grading plan. 23.24.301(B)5 The location and inchnation of all manufactured slopes have been field verified and'are in substantial,confoxmance with the subject g Zazn. 23.24,301(B)6 The construction of earthen berms and positive building pad doge have been field verified and are in substantial conformance with the subject grading plan- Q�yOFES�,QN NER Respectfully Submi No.C 6M P' C P.E. 1944 Kellog Aveinvte,Car]sbad,California 92008 (760)434-2617 08426/2008 09:00 6192952152 JBECERRIL PAGE 10110 Technical f=ield Services, Inc. Civil1;rsgi�neering NnsDection July 18,200-8 City of Encinitas Engineering Services Permits 505 South Vulcan,Avenue Encinitas, California 92024 Re: Plan.Review,Proposed J4h Residence, 816 Wood Dr�,Encinitas - This letter is herby submitted,cofirming that the foundation plait, grading plan and specifications have been reviewed and that it has been detemined that the recommendations in the souls report are properly incorporated into the construction FES docents_ Respectfully Submitted, Vk R C Chris p Vv,P.E. c,z a E 62282 nj 1944 Kellog Avenue,Carlsbad,California 9ZO08 0760)434.2617 Technical Field Services, Inc. Civil Engineering& Inspection PRELIMINARY GEOTECHNICAL REPORT, JOH RESIDENCE, 816 WOOD ROAD, JUP! 2 ? 2008 ENCINITAS, CALIFORNIA 92024 PREPARED FOR: Mr. Tenshang Joh 29504 Bertrand Drive Agoura Hills, California 91301 PREPARED BY: Technical Field Services, Inc. 1944 Kellog Avenue, Suite 103 Carlsbad, California 92008 January 29, 2008 Project No. 4048 1944 Kellog Avenue,Carlsbad,California 92008 (760)434-2617 Technical Field Services, Inc. Civil Engineering& Inspection " January 29, 2008 Project No. 4048 Mr.Tenshang Joh 29504 Bertrand Drive Agoura Hills, California 91301 Subject: Preliminary Geotechnical Evaluation and Recommendations, Joh Residence, 816 Wood Drive, Encinitas, California 92024 A.P.N.: 254-413-10 Dear Mr. Joh: Transmitted herewith is our Preliminary Geotechnical Report for the subject project,dated January 29, 2008.The proposed project will be a two story home constructed with a slab-on-grade foundation.The soils evaluation services as authorized by you includes:site evaluation of existing soils,laboratory testing for expansive potential,soils classification,and recommendations for foundation design and construc- tion.This report presents our field operations,results of our field and laboratory tests and recommendations. We appreciate the opportunity to be of service and look forward to continued involvement with your project. Should you have questions, please contact the undersigned. Respectfully submitted, Technical Field Services, Inc. Chris p 'e A. ow _? 'NO. . Principal Enginee 0 Expc ''I CP/rs C ,Q/ NIA Distribution: (2)Addressee 1944 Kellog Avenue,Carlsbad,California 92008 (760)434-2617 Joh Residence January 29, 2008 816 Wood Drive, Encinitas Project No. 4048 TABLE OF CONTENTS Page 1. INTRODUCTION ................................................................................................................... 1 2. SITE DESCRIPTION............................................................................................................1. 1 3. SUMMARY OF FIELD EVALUATION................................................................................. 1 4. FIELD AND LABORATORY TESTING................................................................................ 1 5. GEOLOGIC HAZARDS.......................................................................................................... 2 6. CONCLUSIONS AND RECOMMENDATIONS................................................................... 3 7. LIMITATIONS......................................................................................................................... 4 8. SELECTED REFERENCES ................................................................................................... 5 Illustrations Figure 1 —Site Location Map Tables Table 1 —Moisture-Density Test Results Table 2—Expansion Potential Test Results Appendix Appendix A—Recommended Earthwork Specifications 40481oh Gtch Joh Residence January 29, 2008 816 Wood Drive, Encinitas Project No. 4048 1. INTRODUCTION In response to your request and authorization,we have provided geotechnical evaluation and testing services for the proposed project. The purposes of our services were to evaluate existing soils and provide recommendations for construction of a two story home and detached garage with accessory dwelling above.The new structures combined floor area is approximately 3900 s.f.. We performed field and laboratory tests of representative material samples to evaluate suitability of the existing underlying soils at the site. Our findings and conclusions are presented herein. 2. SITE DESCRIPTION The subject site is located at 816 Wood Drive,within the City of Encinitas in San Diego County.The site is bound by Wood Drive to the South,residential property to the East and West,and Capri Road to the North.The site is relatively level,and has an existing single story residential structure and separate stor- age building which are to be removed.Access to the site is made through Capri Road. 3. SUMMARY OF FIELD EVALUATION Our engineers conducted the field investigation on January 23, 2008. Soils encountered consisted of fine to medium to brown silty Sand(topsoil) (SM), classified as fill to a depth of 18 inches, below grade.At 18 inches to two feet in depth and below, competent formational marine terrace deposit soils of the Torrey Formation(Ts)were encountered consisting of medium cemented light brown sandstone with fines. Soil samples were taken for laboratory testing within the proposed new construction area.A septic tank servicing the existing home is to be removed and sewer ser- vice will be connected to the public system. The soils in the area within the proposed detached garage and accessory unit were found to be Torrey Formation at grade. Soils were probed and found to be firm and of high density. Soils were visually and texturally classified according to the field identification procedures set forth in the Uniform Soils Classification System. 4. FIELD AND LABORATORY TESTING Laboratory tests were performed on a representative sample of the existing material to evaluate expansion potential, and optimum moisture-density relationship. The maximum dry density and optimum moisture content tests were performed in general accordance with ASTM D1557-91, and the results are presented in Table 1. Expansion potential test was performed in general accor- dance with UBC Standard 18-2, and the results are presented in Table 2. Groundwater was not encountered during the course of our investigation. Groundwater is antici- pated at a depth greater than 15 feet. We do not anticipate groundwater to affect the proposed development. Technical Field Services,Onc. Joh Residence January 29, 2008 816 Wood Drive, Encinitas Project No. 4048 5. GEOLOGIC HAZARDS A review of available geologic hazards pertaining to the site indicates the existence of the Elsi- nore fault zone approximately 50 miles to the northeast, the Newport-Coronado fault and the Rose Canyon fault zone approximately 15 miles to the South of the site. These faults, or any other major active faults in the region have the potential to produce moderate to strong ground shaking. It is likely that the site will experience the effects of at least one moderate to large mag- nitude earthquake during the life of the proposed structure. The maximum bedrock accelerations that would be attributed to a maximum probable earthquake occurring along the nearest fault seg- ments of selected fault zones that could affect the site are summarized below. MAXIMUM BEDROCK ACCELLERATIONS Fault Zone Distance(Mi.) Max Magnitude Max Bedrock Mw Acceleration Rose Canyon 15 mi. 6.9 0.07 Elsinore-Julian 50 mi. 7.1 0.11 Earthquake Valley 50 mi. 6.5 0.07 Elsinore-Coyote 60 mi. 6.8 0.07 The proposed structure should be designed in accordance with the Seismic Design Provisions and Requirements as set forth in the Uniform Building Code, 1997 edition Chapter 16. Based on a maximum earthquake of 6.9 magnitude along the nearest portion of the Rose Canyon fault, or a maximum event along the Elsinore Fault Zone of 7.1,the maximum Bedrock Acceleration at the site would be approximately 0.11 g. For structural design purposes, a damping ratio not greater than 5 %of critical damping, and Soil Profile Type Sd are recommended(UBC Table 16-J). Based on the location of the site greater than 15 kilometers to the nearest Type A fault, and greater than 15 kilometers to the nearest Type B fault,Near Source Factors Na equal to 1.0 and Nv equal to 1.0 are applicable. Seismic design parameters from the Uniform Building Code (UBC), 1997 edition, Volume 11, Chapter 16, are summarized below for the Seismic Zone 4 val- ues. UBC—Chapter 16 Table Seismic Parameter Recommended Value 16-I Seismic Zone Factor Z 0.40 16-J Soil Profile Type Sd 16-Q Seismic Coefficient Ca 0.44Na 16-R Seismic Coefficient Cv 0.64Nv 16-S Near Source Factor Na 1.0 16-T Near Source Factor Nv 1.0 16-U Seismic Source Tyjw B Based on the consistency of soil deposits, and the absence of shallow groundwater, it is our opin- ion that the potential for liquefaction is very low. 2 Technical(Field Services,Onc. Joh Residence January 29, 2008 816 Wood Drive, Encinitas Project No. 4048 6. CONCLUSIONS AND RECOMMENDATIONS Based on our observations and the results of our field and laboratory tests, it is our opinion that the site is suitable for construction of the proposed residential structure, provided the recommen- dations included herein are implemented in design and construction. Grading And Earthwork The main house site shall be cleared of all debris and deleterious materials. The surface soils extending to a maximum depth of 36 inches, and a minimum of 5 feet outside of the building footprint, shall be over-excavated, scarified,moisture conditioned to within 2%of optimum, and compacted to a minimum of 90%relative density. The existing septic tank is to be removed and backfilled with clean soils, and compacted to 90%relative density. The detached garage unit area is to be cut to grade, approximately four feet below the house pad elevation, and will be founded entirely in existing formational soils. Grading shall be performed in accordance with standard grading procedures outlined in the appendix A, and minimum requirements of the City of Encinitas. Foundation and Slab Continuous footings and/or spread footings are suitable for use for the proposed two story structure,provided they are founded within the following minimums: Spread footings and grade beams shall extend a minimum of 24 inches below adjacent grade. Continuous footings shall be a minimum of 18 inches in depth, and 15 inches in width, and shall be reinforced with a minimum of 2 #4 bars, 3 inches clear from the bottom of footing, and 2 #4 bars within 3 inches of the top of footings. It is recommended that concrete be a minimum of 2500 psi for footings and slabs, and 3000 psi for spread footings and grade beams.. Concrete floor slabs shall be a minimum of 4 inches true thickness with reinforcement consist- ing of#3 bars placed at 16 inches on center each way. Slab reinforcement shall be placed within the middle third of the slab by supporting the steel on chairs or"doby"blocks. Slab reinforce- ment should extend a minimum of 6 inches into perimeter footings. Garage slabs may be constructed independent of the garage perimeter footings. The effect of concrete shrinkage will result with cracks developing through the slab. This effect is common to all concrete, and may be reduced by placing the fresh concrete at a maximum slump of 4 inches. The minimum steel rec- ommended is not intended to prevent or reduce shrinkage cracks. Prior to slab placement,the sub-grade should be prepared with 2 inches of clean granular sand, followed by a minimum of 10-mil thick moisture barrier, and overlain by 2 inches of clean sand. Footings and slab areas to receive concrete should be pre-saturated to optimum moisture 24 hours prior to and wetted just prior to concrete placement. An allowable soils bearing value of 1500 pounds per square foot may be used when designing footings founded 18 inches in the compacted fill soils, and 2000 pounds per square foot may be used when designing continuous and spread footings founded a minimum of 18 inches into firm 3 Technical Field Services,Inc. Job Residence January 29, 2008 816 Wood Drive, Encinitas Project No. 4048 natural formation. This value may be increased by 20%for each additional foot of depth to a maximum value of 4500 pounds per square foot, as set forth in the 1997 U.B.C. table 18-1-A. It is anticipated that over time,the underlying soils have a potential for settlement of no more than 1/8 inch, and potential for differential settlements of as much as 1/8 inch. Drainage Adequate measures shall be implemented to properly finish grade the site after the structure and other improvements are in place, such that the drainage water within the site and adjacent properties is directed away from the foundations, footings floor slabs and the tops of slopes by the use of swales and subsurface drains towards the natural drainage of the lot. Proper surface and subsurface drains shall be used and maintained to minimize the potential of water seeking the level of bearing soils under the foundations, footings and floor slabs. Planting and watering within 18 inches of the structure is not recommended,however may be implemented with proper drainage and limiting water within the 18 inch perimeter zone. 7. LIMITATIONS The geotechnical services outlined in this report have been conducted in accordance with current practice and the standard of care exercised by geotechnical consultants performing similar tasks in this area.No other warranty, expressed or implied, is made regarding the observations and conclusions expressed in this report. The reported test results represent values at the locations tested. It is important to note that the precision of field and laboratory tests is not exact and variations should be expected. The re- ported locations and elevations of the tests are estimated based on correlations with the site plans. Further accuracy is not implied. 4 Technical Field Services,lnnc. Joh Residence January 29, 2008 816 Wood Drive, Encinitas Project No. 4048 8. SELECTED REFERENCES American Public Works Association, 2000, "Greenbook" Standard Specifications for Public Works Construction. City of San Diego, 2001, Supplement Amendments to the Standard Specifications for Public Works Construction, San Diego,. Uniform Building Code, 1997,Volume 2, Structural Engineering Design Provisions. 5 Technical Field Services,lnc. i �v ® C O moo V p �o a`o a U �zgo . Nn 3dpyd t mi � i sN t s 1 1 � t � 1 � = t � ig iLL a 5 � � s u sn l� ESE 1 �Y vu�a O ¢ N m aua m a W 7 O Joh Residence January 29, 2008 816 Wood Drive, Encinitas Project No. 4048 Table 1 —Maximum Density Test Results Material Maximum Optimum Type No. Description Dry Density Moisture Content YP (pc f) (/o) 1 Light brown/Tan Sand with silts(SM) 125.5 8.5 Table 2—Expansion Index Test Results Material Type No. Initial Final Expansion Moisture Moisture Index 1 6.5% 11.5% 0-20 -very low 4048 Joh Gtch 2 APPENDIX A RECOMMENDED EARTHWORK SPECIFICATIONS 1. General Description The intent of these specifications is to obtain uniformity and adequate strength in filled ground so that the proposed structures may be safely supported. The procedures include the clearing and preparation of the land to be filled, processing the fill soils, the spreading, and compaction of the tilled areas to conform with the lines and grades as shown on the approved plans. The owner shall retain a Civil Engineer qualified in soil mechanics (herein referred to as engineer) to inspect and test earthwork in accordance with these specifications. The engineer shall advise the owner and grading contractor immediately if any unsatisfactory conditions are observed to exist and shall have the authority to reject the compacted filled ground until such time that corrective measures are taken, necessary to comply with the specifications. It shall be the sole responsibility of the grading contractor to achieve the specified degree of compaction. 2. Preparing Areas to be Filled (a) All brush, vegetation and any biodegradable refuse shall be removed or otherwise disposed of so as to leave the areas to be filled free of vegetation and debris. Any uncompacted filled ground or loose compressible natural ground shall be removed unless the report recommends otherwise. Any buried tanks or other structures shall be removed and the depression backfilled to the satisfaction of the engineer. (b) The natural ground which is determined to be satisfactory for the support of the filled ground shall then be plowed or scarified to a depth of at least 12 inches (12"). (c) After the natural ground has been prepared, it shall then be brought to the proper moisture content and compacted to not less than 90 percent of maximum dry density in accordance with ASTM D1557-91 . (d) Where fills are made on slopes greater than 20 percent, horizontal benches shall be cut into the firm natural ground. The initial bench at the toe of the fill shall be at least 15 feet in width on firm undisturbed natural ground. The width of all succeeding benches shall be at least 6 feet. APPENDIX A 2 3. Fill Materials All material shall be approved by the engineer and shall consist of materials free from vegetable matter, and other lumps greater than 6 inches in diameter. If, during grading operations, soils are found which were not encountered and tested in the preliminary investigation, tests on these soils shall be performed to determine their physical characteristics. Any special treatment recommended in the preliminary or subsequent soils reports not covered herein shall become an addendum to these specifications. 4. Placing and Compacting Fill Materials (a) When the moisture content of the fill material is below that specified, water shall be added until the moisture content is near optimum to assure uniform mixing and effective compaction. (b) When the moisture content of the fill materials is above that specified. the fill material shall be aerated by blading and scarifying or other satisfactory methods until the moisture content is near optimum as specified. (c) After processing, the suitable 611 materials shall be placed in layers which, when compacted, shall not exceed six inches (6"). Each layer shall be spread evenly and shall be thoroughly mixed during the spreading insure uniformity of materials and moisture in each layer. (d) After each layer has been placed, mixed and spread evenly, it shall be thoroughly compacted to not less than the density set forth in paragraph 2 (c) above. Compaction shall be accomplished with approval types of compaction equipment. Rolling shall be accomplished while the till material is at the specified moisture content. In place density tests shall be performed in accordance with ASTM D 1356-90. (e) The surfaces of the fill slopes shall be compacted by means of sheepsfoot rollers or other suitable equipment. Compacting operations shall be continued until the slopes are stable and until there is no appreciable amount of loose soil on the slopes. 5. Inspection Sufficient inspection by our firm or the Soil's Engineer of record and/or his/her representative shall be maintained during the Tilling and compacting operations so that he/she can verify that the fill was constructed in accordance with the accepted specifications. 6. Seasonal Limits No fill material shall be placed, spread, or rolled if weather conditions increase the moisture content above permissible limits. When the v,ork is interrupted by rain, fill operations shall not be resumed until the moisture content and density of fill are as previously specified. All recommendations presented in the attached report are a part of these specifications. 2 Technical Field Services, Inc. Cicil F.nincering& Inspection ! HYDROLOGY REPORT, PROPOSED JOH RESIDENCE, 816 WOOD DRIVE, ENCINITAS, CALIFORNIA 92024 1 I . i I"E J 2 ^n� 7 �U'v J PREPARED FOR: Mr. Tenshang Joh 29504 Bertrand Drive- Agoura Hills, California 91301 PREPARED BY: Technical Field Services, Inc. 1944 Kellog Avenue, Suite 103 Carlsbad, California 92008 January 31, 2008 Project No. 4048 1944 Kellog A,enue.Carlsbad, California 92008 (760)434-2617 Technical Field Services, Inc. ci%it Engineering& Inspection � January 31, 2008 Project No. 4048 Mr.Tenshang Joh 29504 Bertrand Drive Agoura Hills,California 91301 Subject: Hydraulics Study, Proposed Joh Residence, 816 Wood Drive, Encinitas, California 92024 Dear Mr. Joh: Transmitted herewith is our Preliminary Hydrology Report for the subject project,dated January 31, 2008.The proposed project will be a two story home constructed with wood framing and slab-on-grade foundation.Lot drainage will not be changed from the current pattern to facilitate construction.This re- port presents the findings of our study,and measures to adequately handle the anticipated conditions. We appreciate the opportunity to be of service and look forward to continued involvement with your project. Should you have questions, please contact the undersigned. Respectfully submitted, Technical Field Services, Inc. r— Christ e Pinnow ' ,c Principal Engin r No.C 62262 CP/rs 1 Exp: 3gc,J x, * �1r sr CNI� Q�`P F CAl.�Fa Distribution: (2)Addressee 1944 Kellog Asenue,Carlsbad,California 92008 (760)434-2617 Joh Residence January 31, 2008 816 Wood Drive, Encinitas Project No. 4048 TABLE OF CONTENTS Page 1. INTRODUCTION ................................................................................................................... 1 2. SITE DESCRIPTION.............................................................................................................. 1 3. FIELD EVALUATION ............................................................................................................ 1 4. CALCULATIONS ................................................................................................................... 1 5. CONCLUSIONS...................................................................................................................... 2 6. LIMITATIONS......................................................................................................................... 2 7. SELECTED REFERENCES ................................................................................................... 3 Illustrations Figure 1 — Hydrograph data Figure 2— Site map Figure 3-1 —Intensity/Duration Design Chart Appendix Appendix— 100 Year, 6 hour Rainfall Isopluvial 100 Year, 24 hour Rainfall Isopluvial 4048 Joh Hydrology Joh Residence January 31, 2008 816 Wood Drive, Encinitas Project No. 4048 1. INTRODUCTION In response to your request and authorization, we have provided Hydrologic evaluation and calcula- tions pertaining to the runoff characteristics for the proposed project.The purpose of our study was to evaluate the existing and post-construction storm-water runoff. 2. SITE DESCRIPTION The subject site is located at 816 Wood Drive,within the City of Encinitas in San Diego County.The site is bound by Wood Drive to the South,Capri Road to the North,residential property to the West,and East.The site has an existing single story structure of approximately 1,800 s.f.The property is rectangu- lar,and is an existing legal lot of 12,522 s.f.. 3. FIELD EVALUATION Drainage of the site currently allows approximately 40%of the lot to flow towards Wood Drive,and the remaining 60%flows towards Capri Road. Existing site improvements contribute to a total of 3280 s.f. (26%)of impervious area for the lot.The relative majority of runoff passes through land- scape and grass areas and infiltrates before overflow to the public drain system.There is a 38'wide x 39'deep driveway section at the northwest corner of the property,which directly contributes to surface runoff quantities on Capri Road. Flow quantities from this section are estimated at 0.17 cfs,.Total runoff quantities towards Capri Road is estimated at 0.68 cfs for the 100 year frequency storm.Total runoff quantities towards Wood Drive is estimated at 0.34 cfs for the 100 year frequency storm.The site does not receive runoff from adjacent properties. The proposed project will consist of removing all existing improvements from the property and con- structing a new house,garage/accessory unit,concrete drive and walkways which will create an impervious area of approximately 3,250 s.f.,or 26%of the lot coverage.The lot will be graded such that the drainage will not change,and continue to flow through landscape zones along the North and South yards of the property,and ultimately to the frontages of the lot along Wood Drive at the front and Capri Road at the rear,where a permanent BMP grass swale zones(6'x 76'area)will provide re- tention, infiltration and sedimentation of storm water before allowing excess runoff from entering the public storm-water drainage system. 4. CALCULATIONS Hydrology calculations herein were performed using the San Diego County Hydrology Design Manual, Rational Method, for a maximum probable storm occurring once in 100 years, for a six hour period. The peak flow, Q, is calculated using the formula: I Technical Field Services.Inc. Joh Residence January 31, 2008 816 Wood Drive, Encinitas Project No. 4048 Q = C*I*A Where, C =0.90(%imperviouse)+ Cp(1%imperviouse) Cp = 0.45, for LDR2.9DU/Acre, soil type C I= 6.59 inches/hour for 5 min. time of concentration A= 12522 s.f. = 0.288Ac., Before development, 26%of the site is impervious, 60% drains North, and 40%drains South. North runoff: Q= (0.45 * 6.59 * 0.1722 ac.) +(0.87*6.59*0.03ac.) =0.68 cfs South runoff: Q =0.45 * 6.59 * 0.115 ac. =0.34 cfs. Total runoff peak is at 245 minutes from storm beginning is 0.68cfs towards Capri Road, and 0.34 cfs towards Wood Drive. After development, 26% of the site is impervious, 60% drains North, and 40%drains South. North runoff: Q =(0.45 * 6.59 * 0.1842 ac.)+(0.87*6.59*0.018ac.) =0.55 cfs South runoff: Q = 0.45 * 6.59 * 0.115 ac. = 0.34 cfs. Total runoff peak is at 245 minutes from storm beginning is 0.55cfs towards Capri Road, and 0.34 cfs towards Wood Drive. 5. CONCLUSIONS Based on our observations and the results of our calculations ,the change in total runoff after construction is - 0.134cfs, amounting to a peak discharge reduction of 20%towards Capri Road. All runoff will be toward Wood Drive and Capri Road, and will not flow onto adjacent proper- ties. The peak runoff to Wood Drive is calculated to be 0.34 cfs, and occurs at 245 minutes from storm beginning. The peak runoff to Capri Road is calculated to be 0.68 cfs, and occurs at 245 minutes from storm beginning. Runoff flows through landscape areas, and through a 6'wide `Grassblock' infiltration zone and swale allowing maximum infiltration and flow reduction be- fore exiting the property to Wood Drive and Capri Road storm drainage conveyances. NO.C 52262 Exp: A 2 Technical FI*M Services,Inc. Joh Residence January 31, 2008 816 Wood Drive, Encinitas Project No. 4048 6. LIMITATIONS The Engineering services outlined in this report have been conducted in accordance with current practice and the standard of care exercised by Civil Engineering consultants performing similar tasks in this area. No other warranty, expressed or implied, is made regarding the observations and conclusions expressed in this report. The reported calculated results represent values at the locations studied using current available data. It is important to note that the precision of estimated variables is not exact and variations should be expected. Further accuracy is not implied. 3 Technical Field Services,Inc. Joh Residence January 31, 2008 816 Wood Drive, Encinitas Project No. 4048 7. SELECTED REFERENCES County of San Diego, Hydrology Manual, San Diego, dated September, 2003. q Technical Field Services,Inc. FIONAL METHOD HYDROGRAPH PROGRAM �YRIGHT 1992,2001 RICK ENGINEERING COMPANY J DATE 2/19/2008 )ROGRAPH FILE NAME Text1 E OF CONCENTRATION 5 MIN. DUR RAINFALL 2.5 INCHES ;IN AREA 0.115 ACRES VOFF COEFFICIENT 0.45 \K DISCHARGE 0.34 CFS E(MIN)= 0 DISCHARGE(CFS)= 0 E(MIN)= 5 DISCHARGE(CFS)= 0 E(MIN)= 10 DISCHARGE(CFS)= 0 E(MIN)= 15 DISCHARGE(CFS)= 0 E(MIN)= 20 DISCHARGE(CFS)= 0 E(MIN)= 25 DISCHARGE(CFS)= 0 E(MIN)= 30 DISCHARGE(CFS)= 0 E(MIN)= 35 DISCHARGE(CFS)= 0 E(MIN)= 40 DISCHARGE(CFS)= 0 E(MIN)= 45 DISCHARGE(CFS)= 0 E(MIN)= 50 DISCHARGE(CFS)= 0 E(MIN)= 55 DISCHARGE(CFS)= 0 E(MIN)= 60 DISCHARGE(CFS)= 0 E(MIN)= 65 DISCHARGE(CFS)= 0 E(MIN)= 70 DISCHARGE(CFS)= 0 E(MIN)= 75 DISCHARGE(CFS)= 0 E(MIN)= 80 DISCHARGE(CFS)= 0 E(MIN)= 85 DISCHARGE(CFS)= 0 E(MIN)= 90 DISCHARGE(CFS)= 0 E(MIN)= 95 DISCHARGE(CFS)= 0 E(MIN)= 100 DISCHARGE(CFS)= 0 E(MIN)= 105 DISCHARGE(CFS)= 0 E(MIN)= 110 DISCHARGE(CFS)= 0 E(MIN)= 115 DISCHARGE(CFS)= 0 E(MIN)= 120 DISCHARGE(CFS)= 0 E(MIN)= 125 DISCHARGE(CFS)= 0 E(MIN)= 130 DISCHARGE(CFS)= 0 E(MIN)= 135 DISCHARGE(CFS)= 0 E(MIN)= 140 DISCHARGE(CFS)= 0 E(MIN)= 145 DISCHARGE(CFS)= 0 E(MIN)= 150 DISCHARGE(CFS)= 0 E(MIN)= 155 DISCHARGE(CFS)= 0 E(MIN)= 160 DISCHARGE(CFS)= 0 E(MIN)= 165 DISCHARGE(CFS)= 0 E(MIN)= 170 DISCHARGE(CFS)= 0 E(MIN)= 175 DISCHARGE(CFS)= 0 E(MIN)= 180 DISCHARGE(CFS)= 0 (MIN)= 185 DISCHARGE(CFS)= 0 E(MIN)= 190 DISCHARGE(CFS)= 0 (MIN)= 195 DISCHARGE(CFS)= 0 (MIN)= 200 DISCHARGE(CFS)= 0 E(MIN)= 205 DISCHARGE(CFS)= 0 E(MIN)= 210 DISCHARGE(CFS)= 0 (MIN)= 215 DISCHARGE(CFS)= 0 (MIN)= 220 DISCHARGE(CFS)= 0 (MIN)= 225 DISCHARGE(CFS)= 0 (MIN)= 230 DISCHARGE(CFS)= 0 (MIN)= 235 DISCHARGE(CFS)= 0.1 (MIN)= 240 DISCHARGE(CFS)= 0.1 (MIN)= 245 DISCHARGE(CFS)= 0.34 E(MIN)= 250 DISCHARGE(CFS)= 0.1 (MIN)= 255 DISCHARGE(CFS)= 0 E(MIN)= 260 DISCHARGE(CFS)= 0 (MIN)= 265 DISCHARGE(CFS)= 0 (MIN)= 270 DISCHARGE(CFS)= 0 (MIN)= 275 DISCHARGE(CFS)= 0 (MIN)= 280 DISCHARGE(CFS)= 0 (MIN)= 285 DISCHARGE(CFS)= 0 (MIN)= 290 DISCHARGE(CFS)= 0 (MIN)= 295 DISCHARGE(CFS)= 0 (MIN)= 300 DISCHARGE(CFS)= 0 (MIN)= 305 DISCHARGE(CFS)= 0 (MIN)= 310 DISCHARGE(CFS)= 0 (MIN)= 315 DISCHARGE(CFS)= 0 (MIN)= 320 DISCHARGE(CFS)= 0 (MIN)= 325 DISCHARGE(CFS)= 0 (MIN)= 330 DISCHARGE(CFS)= 0 (MIN)= 335 DISCHARGE(CFS)= 0 (MIN)= 340 DISCHARGE(CFS)= 0 (MIN)= 345 DISCHARGE(CFS)= 0 (MIN)= 350 DISCHARGE(CFS)= 0 (MIN)= 355 DISCHARGE(CFS)= 0 ONAL METHOD HYDROGRAPH PROGRAM YRIGHT 19921,2001 RICK ENGINEERING COMPANY DATE 2/19/2008 ROGRAPH FILE NAME Text1 OF CONCENTRATION 5 MIN. UR RAINFALL 2.5 INCHES N AREA 0.1725 ACRES OFF COEFFICIENT 0.45 <DISCHARGE 0.68 CFS (MIN)= 0 DISCHARGE(CFS)= 0 (MIN)= 5 DISCHARGE(CFS)= 0 (MIN)= 10 DISCHARGE(CFS)= 0 (MIN)= 15 DISCHARGE(CFS)= 0 (MIN)= 20 DISCHARGE(CFS)= 0 (MIN)= 25 DISCHARGE(CFS)= 0 (MIN)= 30 DISCHARGE(CFS)= 0 (MIN)= 35 DISCHARGE(CFS)= 0 (MIN)= 40 DISCHARGE(CFS)= 0 (MIN)= 45 DISCHARGE(CFS)= 0 (MIN)= 50 DISCHARGE(CFS)= 0 (MIN)= 55 DISCHARGE(CFS)= 0 (MIN)= 60 DISCHARGE(CFS)= 0 (MIN)= 65 DISCHARGE(CFS)= 0 :(MIN)= 70 DISCHARGE(CFS)= 0 :(MIN)= 75 DISCHARGE(CFS)= 0 (MIN)= 80 DISCHARGE(CFS)= 0 (MIN)= 85 DISCHARGE(CFS)= 0 (MIN)= 90 DISCHARGE(CFS)= 0 (MIN)= 95 DISCHARGE(CFS)= 0 (MIN)= 100 DISCHARGE(CFS)= 0 (MIN)= 105 DISCHARGE(CFS)= 0 (MIN)= 110 DISCHARGE(CFS)= 0 (MIN)= 115 DISCHARGE(CFS)= 0 (MIN)= 120 DISCHARGE(CFS)= 0 (MIN)= 125 DISCHARGE(CFS)= 0 (MIN)= 130 DISCHARGE(CFS)= 0 (MIN)= 135 DISCHARGE(CFS)= 0 (MIN)= 140 DISCHARGE(CFS)= 0 (MIN)= 145 DISCHARGE(CFS)= 0 (MIN)= 150 DISCHARGE(CFS)= 0 (MIN)= 155 DISCHARGE(CFS)= 0 (MIN)= 160 DISCHARGE(CFS)= 0 E(MIN)= 165 DISCHARGE(CFS)= 0 E(MIN)= 170 DISCHARGE(CFS)= 0 (MIN)= 175 DISCHARGE(CFS)= 0 (MIN)= 180 DISCHARGE(CFS)= 0 E(MIN)= 185 DISCHARGE(CFS)= 0 (MIN)= 190 DISCHARGE(CFS)= 0 (MIN)= 195 DISCHARGE(CFS)= 0 E(MIN)= 200 DISCHARGE(CFS)= 0 E(MIN)= 205 DISCHARGE(CFS)= 0 E(MIN)= 210 DISCHARGE(CFS)= 0 E(MIN)= 215 DISCHARGE(CFS)= 0 E(MIN)= 220 DISCHARGE(CFS)= 0 E(MIN)= 225 DISCHARGE(CFS)= 0.1 E(MIN)= 230 DISCHARGE(CFS)= 0.1 E(MIN)= 235 DISCHARGE(CFS)= 0.1 E(MIN)= 240 DISCHARGE(CFS)= 0 E(MIN)= 245 DISCHARGE(CFS)= 0.68 E(MIN)= 250 DISCHARGE(CFS)= 0.1 E(MIN)= 255 DISCHARGE(CFS)= 0.1 E(MIN)= 260 DISCHARGE(CFS)= 0 E(MIN)= 265 DISCHARGE(CFS)= 0 E(MIN)= 270 DISCHARGE(CFS)= 0 E(MIN)= 275 DISCHARGE(CFS)= 0 E(MIN)= 280 DISCHARGE(CFS)= 0 E(MIN)= 285 DISCHARGE(CFS)= 0 E(MIN)= 290 DISCHARGE(CFS)= 0 E(MIN)= 295 DISCHARGE(CFS)= 0 E(MIN)= 300 DISCHARGE(CFS)= 0 E(MIN)= 305 DISCHARGE(CFS)= 0 E(MIN)= 310 DISCHARGE(CFS)= 0 E(MIN)= 315 DISCHARGE(CFS)= 0 E(MIN)= 320 DISCHARGE(CFS)= 0 E(MIN)= 325 DISCHARGE(CFS)= 0 E(MIN)= 330 DISCHARGE(CFS)= 0 E(MIN)= 335 DISCHARGE(CFS)= 0 E(MIN)= 340 DISCHARGE(CFS)= 0 E(MIN)= 345 DISCHARGE(CFS)= 0 E(MIN)= 350 DISCHARGE(CFS)= 0 E(MIN)= 355 DISCHARGE(CFS)= 0 n_�^^We��ea^� '$ VO4 C .tc.•� C U w 0 o 0 t C']N(')ON N N N•- m O• NO OI,C 7 U t M CO o'p to p f0 ^ONSSn �:�m�n on me — ,w L U LQ 'r, (0 U O N ~' L.L m mom m rf: v e c'f N N N O O -j p o �r:o c';o rn s _ g .'1�.m m N n .R m C:- m r' ' C �O O d 11 I < •' (h r u]e e :^.MN N . O OO, Nr VJ O O L O. a N _ �jm?Q_r Eccc 3 N rn a s ° o nm vM N vN � �ooa y C (�f N <T I6 C � 4/ y �- Nescnn N�.como ornr�m�n. E (D In t N (6 C ..;soo:r. aa,TNmm mo! c .�_ rQiom `mKO c. loaroodi y � 7 O O d a, n rr MN �N - 0000d r. N U IU N c o c N p 11 N m O - p; r- N mIn 0cc I- n n N C 7 U LL7 O rn r^_ .['.!7 :\N!O c^c._ •r r, om -i�- e rN C O CO c r to — N U J N c(i.f)-t c'i :�, c`.:� - - a a O O O OBI o U C O -O .d o t @ O 0 1 C >, a N a.m ao MI N 'a Q c .0 a O 00 "C c C I! L c ai C ^:N N - - E y mr,r N nc>c - <sc-m-n! C6 O �' R .a L N Q �' C C cn '^_ Q: �-ci NI Q .nv O a o D y Y j, p y l a O� L O rd :� � ooCOCOOOO� p "V N�y L Q1 N c C N cc u' U N Nac � ^.m 1Nti° - aa�=�.,p _moo+ ll7l v� p- aC� ccCCOCOp000O 0 C C U �_ 1` .V 3 u1 C W N II �_ 11 I- U NP O r•'f NNagiO W OWN a2 or r � O� I a O E G c CD 70 II Lo LL a U.� Q L m a cn 11 Q — Q Z M 6-Hour Precipitation(inches) �^ o 'r, o -) o n o vi o C : : : : N c Z Q C ` .. 0 W � = �a II II II 13 - � c y c .. ._... - _ N C m 0/0( ZL .7 O G C C: C, CJ C m n (lnoytsali0U11�(psualul If Cd C13 2 N NO I a 1/ 0 %! ifil lit gel z Imperial County p.to 0. .. .......... . .......... .......... ..... ..... . ... ....... V.......... .......... ................... `0 .00.L L V 00.LlL 6 d 'p CP C r Z �A7 4� ZZ fill it c) Hit gel z C3, o Imperial County 46" ... ....... ....... . . ..... . ..... F ---------- . ...... .... DE.9t . ........ . .......... 9t.9LI 2Y vv • .00.LLL .00.[11 R O.LtI 3k David Jolly, Land Surveying 764 Laguna Drive Carlsbad, CA 92008 Phone:760-729-7969 Fax:760-729-6351 E-mail: djollyls@adelphia.net i Chris Pinnow, P.E. 27 2u,08 Technical Field Services, Inc. 1199 Tama rack Avenue Carlsbad, CA 92008 RE: Establishment of Vertical Bench Mark based on City of Encinitas Survey Control Network For project situate at 816 Wood Drive Encinitas, CA February 04, 2008 Dear Chris; This letter is to certify that on February 01, 2008 1 performed a survey to establish a vertical bench mark near the abovementioned project site based on City of Encinitas Survey Control Network Station ENC-05, described as being a found 2" iron pipe with tag stamped"RCE 29577" at a 20 foot offset to the center of cul-de-sac at the northeast end of Arbor Court. If you have any questions please feel free to contact me Sincerely, Q_ZL�I L__s. David Jolly, L.S. MEMBER:California Land Surveyor's Association CITY OF ENCINITAS SURVEY CONTROL NETWORK - Engineering Department Phone(780)633-2770 505 S. VuMan Avenue Fax(760)633-2818 Encinitas, CA 92024-3633 Point Number: 1005 Station Name: ENC-05 Datum: CCS 83,1991.36 Epoch,U.S.Survey Feet Monument Description: Latitude: 33°4'29.35833"N Longitude: 117017'33.35682-W FD. 2"IRON PiIPE WITH TAG STAMPED"RCE 29577"AT A 20 Ellipsoid Height: 58.7 FOOT OFFSET TO THE CENTER OF CUL-DE-SAC AT THE Northing: 1972447.581 NORTHEAST END OF ARBOR COURT. Easting: 6242287.976 NGVD29 Elevation: 172.235 NAVD88 Elevation: 174.391 Combined Scale Factor 0.9999615 Established By: HUNSAKER&ASSOCIATES SAN Convergence: - 0 34 22.536 Date Established: 4/15/2004 Horizontal Order: FIRST Monument"To Reach" Description: Monument FROM THE INTERSECTION OF OLYMPUS STREET AND Sketch: ARBOR COURT, GO NORTHEASTERLY 0.1 MI. TO A BULB CUL R DE-SAC. THE MONUMENT IS LOCATED 20 FEET NORTHWESTERLY OF A 2"IRON PIPE AT THE CENTER OF 9577 CUL-DE-SAC, 27'SOUTHERLY OF A STREET LIGHT AND 19 FEET SOUTHEASTERLY OF A SEWER MANHOLE SET FLUSH IN ASPHALT. `f r �.P 1 —AIM I Iti\ 'mss ,i HUNSAKER & ASSOCIATES S A N D I E G O 1 N C . PLANNING ■ ENGINEERING ■ SURVEYING 10179 Huennekens St. Suite 200 San Diego, CA 92121 PH: (858) S58-4500 FX: (8S8) 558-1414 Page 5 of 49