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HomeMy WebLinkAbout2724-2730 LOKER AVE; ; PC090034; Permit04-15-2010 City of Carlsbad 1635 Faraday Av Carlsbad, CA 92008 Plan Check Permit No: PC090034 Building Inspection Request Line (760) 602-2725 Job Address: Permit Type: Parcel No: Valuation: Reference #: Project Title: 2724 LOKER AV WEST CBAD PLANCK 2051302200 $0.00 Lot#: Construction Type:Entered By: Plan Approved: Issued: CBAD CROSSROADS-INSTALL Inspect Area: CONCRETE CAISSONS TO SUPPORT 4 BUILDINGS ON WEST Status: PENDING Applied: 10/19/2009 RMA Applicant: H.G. FENTON COMPANY STE 200 7577 MISSION VALLEY RD 92108 619400-0169 Owner: Plan Check Fee Additional Fees $200.00 $0.00 Total Fees:$200.00 Total Payments To Date:$200.00 Balance Due:$0.00 Inspector: FINAL APPROVAL Date:Clearance: NOTICE: Please take NOTICE that approval of your project Includes the 'Imposition" of fees, dedications, reservations, or other exactions hereafter collectively referred to as "fees/exactions." You have 90 days from the date this permit was issued to protest imposition of these fees/exactions. If you protest them, you must follow the protest procedures set forth in Government Code Section 66020(a), and file the protest and any other required information with the City Manager for processing in accordance with Carlsbad Municipal Code Section 3.32.030. Failure to timely follow that procedure will bar any subsequent legal action to attack, review, set aside, void, or annul their imposition. You are hereby FURTHER NOTIFIED that your right to protest the specified fees/exactions DOES NOT APPLY to water and sewer connection fees and capacity changes, nor planning, zoning, grading Or other similar application processing or service fees in connection with this project. NOR DOES IT APPLY to any fees/exactions of which you have previously been given a NOTICE similar to this, or as to which the statute of limitations has previously otherwise expired. CITY OF CARLSBAD Building Permit Application 1635 Faraday Ave., Carlsbad, CA 92008 760-602-2717 / 2718 / 2719 Fax 760-602-8558 www.carlsbadca.gov JOB ADDRESS 2724 Loker Ave, Carlsbad, CA 92010 SUITE#/SPACE#/UNIT# 00 CT/PROJECT # 10372 3-5 # BATHROOMS TENANT BUSINESS NAME Sensient DESCRIPTION OF WORK: Include Square Feet of Affected Area(s) Excavation for, and installation of, concrete ding foundations at west side of building along existing slope. EXISTING USE Office & Warehouse PROPOSED USE Office &WarehouH GARAGE (SF)PATIOS (SF)DECKS (SF)FIREPLACE N0| | AIR CONDITIONING YES ["/INO [ [ FIRE SPRINKLERS CONTACT NAME (If Different Font Applicant)APPLICANT NAME H.G. Fenton Company ADDRESS ADDRESS 7577 Mission Valley Rd, Ste 200 CITY STATE SanDiecio STATE CA::92108 PHONE FAX PHONE 619-400-0169 FAX 619-400-0111 EMAIL EMAIL bgatesMhgfenton.com PROPERTY OWNER NAME H.G. Fenton Property Company CONTRACTOR BUS. NAME Western foundations & Shoring ADDRESS 7577 Mission Valley Rd, Ste 200 ADDRESS 10875 Highway 67 CITY San Diego STATE CA ZIP 92108 CITY Lakeside STATE CA ZIP 92040 PHONE 619-400-0120 FAX 619-400-0111 PHONE 619-561-3510 619-561-7916 EMAIL :fcgates@hgfenton.com::ghove@westernfoundations.net ARCH/DESIGNER NAME & ADDRESS Biirkett&Wona- 3434 4th Ave, 92103 SE2533 439363 CITY BUS. LIC.* (Sec. 7031.5 Business and Professions Code: Any City or County which requires a permit to construct, alter, improve, demolish or repair any structure, prior to its issuance, also requires theapplicant for such permit to file a signed statement that he is licensed pursuant to the provisions of the Contractor's License Law {Chapter 9, commending with Section 7000 of Division 3 of theBusiness and Professions Code) or that he is exempt therefrom, and the basis for the alleged exemption. Any violation of Section 7031.5 by any applicant for a permit subjects the applicant to acivil penalty of not more than five hundred dollars {$500}). Workers' Compensation Declaration: / hereby affirm under penalty of perjury one of the following declarations: HI have and will maintain a certificate of consent to self-insure for workers' compensation as provided by Section 3700 of the Labor Code, for the performance of the work for which this permit is issued. I have and will maintain workers' compensation, as required by Section 3700 of the Labor Code, for the performance of the work for which this permit is issued. My workers' compensation insurance carrier and policy number are: Insurance Co : ::;.; '::;:: .':: ::: : :"• r : :: : .::::::':::' : :::::::: ::::': ;: : Policy No. v::!'!:. :.:::.::..: :: •":::::l: :: : :: :.: ;, -: Expiration Date ::':-:- : • :•':'•:••• .:: ;:: This section need not be completed if the permit is for one hundred dollars ($100) or less. U Certificate of Exemption: I certify that in the performance of the work for which this permit is issued, I shall not employ any person in any manner so as to become subject to the Workers' Compensation Laws of California. WARNING: Failure to secure workers' compensation coverage is unlawful, and shall subject an employer to criminal penalties and civil fines up to one hundred thousand dollars (&100,000), in addition to the cost of compensation, damages as provided for in Section 3706 of the Labor code, interest and attorney's fees. ^f CONTRACTOR SIGNATURE DATE / hereby affirm that I am exempt from Contractor's License Law for the following reason: [^~| I, as owner of the property or my employees with wages as their sole compensation, will do the work and the structure is not intended or offered for sale (Sec. 7044, Business and Professions Code: The Contractor's License Law does not apply to an owner of property who builds or improves thereon, and who does such work himself or through his own employees, provided that such improvements are not intended or offered for sale. If, however, the building or improvement is sold within one year of completion, the owner-builder will have the burden of proving that he did not build or improve for the purpose of sale). |j£J I, as owner of the property, am exclusively contracting with licensed contractors to construct the project (Sec. 7044, Business and Professions Code: The Contractor's License Law does not apply to an owner of property who builds or improves thereon, and contracts for such projects with contractor(s) licensed pursuant to the Contractor's License Law). I™"! I am exempt under Section • : : •:: :::. ; Business and Professions Code for this reason: 1.1 personally plan to provide the major labor and materials for construction of the proposed property improvement. I JYes I JNo 2.1 (have I have not) signed an application for a building permit for the proposed work. 3.1 have contracted with the following person (firm) to provide the proposed construction (include name address / phone / contractors' license number): 4.1 plan to provide portions of the work, but I have hired the following person to coordinate, supervise and provide the major work (include name / address / phone / contractors' license number): 5.1 will provide some of the work, but I have contritedXriiredTfrlsifollowing persons to provide the work indicated (include name / address / phone / type of work): >€$"PROPERTY OWNER SIGNATUI DATE 'fs the applicant or future building occupant required to submit a business olan, acutely hazardous materials registration form or risk management and prevention program under Sections 25505, 25533 or 25534 of the Presley-Tanner Hazardous Substance Account Act? | | Yes 1/lNo Is the applicant or future building occupant required to obtain a permit from the air pollution control district or ainjuality management district? LjYes [71 No Is the facility to be constructed within 1,000feetoftheouterboundaryofaschoolsite? I lYes l/INo EMERGENCY SERVICES AND THE AIR POLLUTION CONTROL DISTRICT. I hereby affirm that there is a construction lending agency for the performance of the work this permit is issued (Sec. 3097 (i) Civil Code). Lender's Name; Lender's Address: I certify that I have read the application and state that the above information is correct and that the information on the plans is accurate. I agree to comply with all City ordinances and State laws relating to building construction. I hereby authorize representative of the City of Carlsbad to enter upon the above mentioned property for inspection purposes. I ALSO AGREE TO SAVE, INDEMNIFY AND KEEP HARMLESS THE CITY OF CARLSBAD AGAINST ALL LIABILITIES, JUDGMENTS, COSTS AND EXPENSES WHICH MAY IN ANY WAY ACCRUE AGAINST SAID CITY IN CONSEQUENCE OF THE GRANTING OF THIS PERMIT. OSHA: An OSHA permit is required for excavations over 50' deep and demolition or construction of structures over 3 stories in height. EXPIRATION: Every permit issued by the Building Official under the provisions of this Code shall expire by limitation and become null and void if the building or work authorized by such permit is not commenced within 180 days from the date of such permit or if theAuildingfcr wqptanthorized by such permit is suspended or abandoned at any time after the work is commenced for a period of 180 days (Section 106.4.4 Uniform Building Code). ^APPLICANT'S SIGNATURE sJM. \^\ «- O ./>»,. DATE T EsGil Corporation In (Partnership with (government for (Suiting Safety DATE: NOV. 17, 20O9 a APPLICANT JURISDICTION: CARLSBAD a~PLAN REVIEWER Q FILE PLAN CHECK NO.: CBPC09-OO34 SET: II PROJECT ADDRESS: 2724 LOKER AVENUE WEST PROJECT NAME: Add Caissons Under (4)Existing Tilt-up Building Footings The plans transmitted herewith have been corrected where necessary and substantially comply with the jurisdiction's building codes. XI The plans transmitted herewith will substantially comply with the jurisdiction's building codes when minor deficiencies identified below are resolved and cheeked by building department staff. The plans transmitted herewith have significant deficiencies identified on the enclosed check list and should be corrected and resubmitted'for a complete recheck. The check list transmitted herewith is for yourjnformation. The plans are being held at Esgil Corporation until corrected plans are submitted for recheck. The applicant's copy of the check list is enclosed for the jurisdiction to forward to the applicant contact person. The applicant's copy of the check list has been sent to: XI Esgil Corporation staff did not advise the applicant that the plan check has been completed. Esgil Corporation staff did advise the applicant that the plan check has been completed. Person contacted: Telephone #: Date contacted: (by: ) Fax #: Mail Telephone Fax In Person X] REMARKS: The applicant to submit a letter from the soils engineer to the building official indicating that he has reviewed the foundation fixes and has determined that they comply with the report recommendations. By: ALI SADRE Enclosures: EsGil Corporation D GA D MB D EJ D PC 11/13 9320 Chesapeake Drive, Suite 208 + San Diego, California 92123 4 (858)560-1468 *• Fax (858) 560-1576 EsGil Corporation In (PartnersHip -with government for <BuiC<fing Safety DATE: OCT. 21, 2009 Q^AEPUCANT JURIST JURISDICTION: CARLSBAD a PLAN REVIEWER Q FILE PLAN CHECK NO.: CBPCO9-O034 SET: I PROJECT ADDRESS: 2724 LOKER AVENUE WEST PROJECT NAME: Add Caissons Under (4)Existing Tilt-up Building Footings The plans transmitted herewith have been corrected where necessary and substantially comply with the jurisdiction's building codes. The plans transmitted herewith will substantially comply with the jurisdiction's building codes when minor deficiencies identified below are resolved and checked by building department staff. The plans transmitted herewith have significant deficiencies identified on the enclosed check list and should be corrected and resubmitted for a complete recheck. XI The check list transmitted herewith is for your information. The plans are being held at Esgil Corporation until corrected plans are submitted for recheck. The applicant's copy of the check list is enclosed for the jurisdiction to forward to the applicant contact person. XI The applicant's copy of the check list has been sent to: Brian Gates c/o H.G. Fenton Company 7577 Mission Valley Road, # 200, S.D., CA 92108 Esgil Corporation staff did not advise the applicant that the plan check has been completed. X] Esgil Corporation staff did advise the applicant that the plan check has been completed. Person contacted: Brian C*1^) Telephone #: 1-619-400-0169 Date contacted: 10 lul°1(by: £~~ ) Fax #: 1-619-400-0111 Mail Telephone «•-•• Fax s In Person REMARKS: By: ALI SADRE Enclosures: EsGil Corporation D GA D MB D EJ D PC 10/5 9320 Chesapeake Drive, Suite 208 4 San Diego, California 92123 + (858)560-1468 *• Fax (858) 560-1576 CARLSBAD CBPCO9-OO34 OCT. 21, 2OO9 PLAN REVIEW CORRECTION LIST SINGLE FAMILY DWELLINGS AND DUPLEXES PLAN CHECK NO.: CBPC09-O034 JURISDICTION: CARLSBAD PROJECT ADDRESS: 2724 LOKER AVENUE WEST FLOOR AREA: No Change; Occupancy: B/S1/F1; Height: No Change; Stories: No Change REMARKS: DATE PLANS RECEIVED BY DATE PLANS RECEIVED BY JURISDICTION: 10/19 ESGIL CORPORATION: 10/20 DATE INITIAL PLAN REVIEW PLAN REVIEWER: ALI SADRE COMPLETED: OCT. 21, 2009 FOREWORD (PLEASE READ): This plan review is limited to the technical requirements contained in the International Building Code, Uniform Plumbing Code, Uniform Mechanical Code, National Electrical Code and state laws regulating energy conservation, noise attenuation and access for the disabled. This plan review is based on regulations enforced by the Building Department. You may have other corrections based on laws and ordinance by the Planning Department, Engineering Department, Fire Department or other departments. Clearance from those departments may be required prior to the issuance of a building permit. Present California law mandates that construction comply with the 2007 edition of the California Building Code (Title 24), which adopts the following model codes: 2006 IBC, 2006 UPC, 2006 UMC and 2005 NEC. * The above regulations apply, regardless of the code editions adopted by ordinance. The following items listed need clarification, modification or change. All items must be satisfied before the plans will be in conformance with the cited codes and regulations. Per Sec. 105.4 of the 2006 International Building Code, the approval of the plans does not permit the violation of any state, county or city law. To speed up the recheck process, please note on this list (or a copy) where each correction item has been addressed, i.e.. plan sheet number, specification section, etc. Be sure to enclose the marked up list when you submit the revised plans. CARLSBAD CBPCO9-OO34 OCT. 21, 20O9 PLANS • The following note should be given with each correction list: Please make all corrections, as requested in the correction list. Submit three new complete sets of plans for commercial/industrial projects (two sets of plans for residential projects). For expeditious processing, corrected sets can be submitted in one of two ways: 1. Deliver all corrected sets of plans and calculations/reports directly to the City of Carlsbad Building Department, 1635 Faraday Ave., Carlsbad, CA 92008, (760)602-2700. The City will route the plans to EsGil Corporation and the Carlsbad Planning, Engineering and Fire Departments. 2. Bring one corrected set of plans and calculations/reports to EsGil Corporation, 9320 Chesapeake Drive, Suite 208, San Diego, CA 92123, (858) 560-1468. Deliver all remaining sets of plans and calculations/reports directly to the City of Carlsbad Building Department for routing to their Planning, Engineering and Fire Departments. NOTE: Plans that are submitted directly to EsGil Corporation only will not be reviewed by the City Planning, Engineering and Fire Departments until review by EsGil Corporation is complete. 1. A reminder that the plans deviating from conventional wood frame construction shall have the structural portions signed and sealed by the California state licensed engineer or architect responsible for their preparation, along with structural calculations. (California Business and Professions Code). 2. Provide a statement on the Title Sheet of the plans, stating that this project shall comply with the 2007 California Building Code, which adopts the 2006 IBC. • STRUCTURAL 3. Provide a copy of the project soil report. The report shall include foundation design recommendations based on the engineer's findings. '•'' 4. Specify on the foundation plan or structural specifications sheet the soil classification and the soils expansion index of the foundation. Section A106.1.1. 5. Note on the foundation plan that "Prior to the contractor requesting a Building Department foundation inspection, the soils engineer shall advise the building official in writing that: a) The building pad was prepared in accordance with the soils report, b) The utility trenches have been properly backfilled and compacted, and c) The foundation excavations, the soils expansive characteristics and bearing capacity conform to the soils report." 6. Provide a letter from the soils engineer confirming that the foundation plan, grading plan and specifications have been reviewed and that it has been determined that the recommendations in the soils report are properly incorporated into the construction documents. CARLSBAD CBPCO9-OO34 OCT. 21, 2OO9 7. Please revise the sketch on Sheet S-2 for Building 2730 to remove the caisson at the corner of the building to match that on Sheet S-2.4. 8. Please show the spacing of all the caissons on various caisson layout plans. 9. Please provide a cross section through the pile cap on detail 11/S-3, similar to 7/S-3. 10. The following design loads shall be clearly indicated on the construction documents. (Section 1603.1) • Floor live load. Uniformly distributed, concentrated, and impact live load, including any live load reductions used, should be indicated. • Roof live load. Each roof live load used should be indicated. • Wind load. The following information should be provided, (Section 1603.1.4) o Wind importance factor, I, and building category o Applicable internal pressure coefficient o Components and cladding (the design wind pressure in terms of psf to be used for the design of exterior component and cladding materials not specifically designed by the registered design professional • Seismic design data. The following information should be provided. (Section 1603.1.5) o Seismic importance factor, IE and occupancy category o Mapped spectral response accelerations Ss and B! ,. o Site class o Spectral response coefficients SD$ and SD1 o Basic seismic-force-resisting system(s) o Design base shear o Seismic response coefficient(s), Cs o Response modification factor(s), R o Analysis procedure used. • MISCELLANEOUS & CITY POLICY ITEMS 11. To speed up the review process, note on this list (or a copy) where each correction item has been addressed, i.e., plan sheet, note or detail number, calculation page, etc. CARLSBAD CBPC09-0034 OCT. 21, 2OO9 12. Please indicate here if any changes have been made to the plans that are not a result of corrections from this list. If there are other changes, please briefly describe them and where they are located in the plans. • Have changes been made to the plans not resulting from this correction list? Please indicate: Yes Q No Q 13. The jurisdiction has contracted with Esgil Corporation located at 9320 Chesapeake Drive, Suite 208, San Diego, California 92123; telephone number of 858/560-1468, to perform the plan review for your project. If you have any questions regarding these plan review items, please contact ALI SADRE at Esgil Corporation. Thank you. CARLSBAD CBPC09-0034 OCT. 21, 20O9 [DO NOT PAY- THIS IS NOT AN INVOICE] VALUATION AND PLAN CHECK FEE JURISDICTION: CARLSBAD PLAN CHECK NO.: CBPC09-OO34 PREPARED BY: ALI SADRE DATE: OCT. 21, 2009 BUILDING ADDRESS: 2724 LOKER AVENUE WEST BUILDING OCCUPANCY: B//S1/F1 TYPE OF CONSTRUCTION: VB/SPR. BUILDING PORTION Foundation Repair& Retrofit Air Conditioning Fire Sprinklers TOTAL VALUE Jurisdiction Code AREA ( Sq. Ft.) cb Valuation Multiplier By Ordinance Reg. Mod. VALUE ($) Plan Check Fee by Ordinance Type of Review: I I Repetitive FeeRepeats D Complete Review D Other r-ri Hourly EsGil Fee $580.00 $116.00 Structural Only Hrs. $464.00 Based on hourly rate Comments: Sheet 1 of 1 macvalue.doc + PLANNING/ENGINEERING APPROVALS PERMIT NUMBER PC 09-34 DATE 10/20/09 ADDRESS 2724 LOKER AV WEST RESIDENTIAL ADDITION- MINOR (< 17,000.00) RETAINING WALL VILLAGE FAIRE POOL/SPA TENANT IMPROVEMENT COMPLETE OFFICE BUILDING OTHER FOUNDATION REPAIR ONLY PLANNER GINA RU ENGINEER DATE 10/20/09 DATE JUL, • d. H:\ABMIN\COUNTEK/PlANNING/ENGINEEItlNGAPPROVAlS 11-18-2009 Job Address: Permit Type: Parcel No: Valuation: Reference #: Project Title: Applicant: City of Carlsbad 1635 Faraday Av Carlsbad, CA 92008 Permit/Project No: SW090046 Fee Summary Listing 2724 LOKER AV WEST CBAD SWPPP 2090812800 Lot#: $0.00 PC 09-34 LOKER BUSINESS PARK REPAIR FOUNDATION Status: PENDING Applied: 10/15/2009 Entered By: KML Owner: Fee Desc SWPPP INSPECTIONS SWPPP PLAN CHECK Total Fee 208.00 49.00 Payments .00 .00 Balance Due 208.00 49.00 Total Fees to Date:$257.00 Balance Due to Date:$257.00 BURKETT & WONG Structural & Civil Engineers & Surveyors 3434 Fourth Avenue • San Diego, CA 92103-4911 Tel: (619) 299-5550 • Fax: (619) 299-9934 DATE- OCTOBER 18, 2009 ENGINEER- MJH JOB No. 10591A STRUCTURAL CALCULATIONS FOR 2724, 2726, 2728 AND 2730 LOKER AVE AT CARLSBAD, CA H.G. Fenton Company 7577 Mission Valley Rd, San Diego, CA 92108 11/6/2009 Engineer- MJH Fenton Vertical Loads Job 10591A Burkett & Wong LOADING Sheet Job No. Roofs PSF Roofing Sheathing Insulation Joists Ceiling Sprinklers Miscellaneous SubTotal Beams Total DL Live Total Load LL Reduction Typ 12.7 4.3 Oj 2 0 0 0 19.0 1 20.0 18 38.0 Y Max 16.7 4.3 0 2 0 0 0 23.0 1 24.0 18 42.0 Y 2.5 2.2 1 0 2.8 1.5 0 10.0 0 10.0 0 10.0 Y 3 3.0 3.0 3.0 Y Floors PSF LW Concrete Sheathing Insulation Joists Ceiling Sprinklers Miscellaneous SubTotal Beams Total DL Live Total Load LL Reduction A 0.0 0.0 0.0 Y 0.0 0.0 0.0 Y C 0.0 0.0 0.0 Y D 0.0 0.0 0.0 Y Lateral Loads Seismic Wind Wind Speed MPH Table 6-3 Kz 6.5.7.2 Kzt Table 6-4 Kd I 6-1 5 qz 6.5.8.1 G Figure 6-6 Cp Figure 6.5 Gcpi 6-1 7 Total PSF 85 0.76 1.00 0.85 1.00 12.0 0.85 1.30 0.00 13.2 85 0.66 1.00 0.85 1.00 10.4 0.85 0.80 0.18 8.9 Parapet 85 0.76 1 0.85 1 12.0 0.85 0 1.5 18.0 85 0.66 1 0.85 1 10.4 0.85 0 1 10.4 Soil Type Allowable Soil Bearing PSF Equivalent Fluid Press. PCF Uniform Load PSF Passive Pressure PCF u FS Sliding Min 2500 35 300 0.4 1.5 IBC Site Class Ss S1 Fa Fv Sds Sd1 Ts Seis. Design Cat. I T R Omega Cd TL 12.8-2 Cs 12.8-3 Cs 12.8-4 Cs 12.8-5 Cs 12.8-6 Cs Cs Cs*.7= Bldgs D 1.112 0.422 1.055 1.578 0.7821 0.4439 0.5676 D 1 0.26 5 2.5 5 8 0.1564 0.3415 10.508 0.010 0.042 0.156 0.156 0.109 C 1.089 0.396 1 1.404 0.726 0.3707 0.5105 D 1 0.26 2.2 1.25 2.5 8 0.33 0.648 19.938 0.010 0.090 0.330 0.330 0.231 C 1.089 0.396 1 1.404 0.726 0.3707 0.5105 D 1 0.26 3.5 3 3 8 0.2074 0.4073 12.533 0.010 0.057 0.207 0.207 0.145 C 1.089 0.396 1 1.404 0.726 0.3707 0.5105 D 1 0.4 3.25 2 3.25 8 0.2234 0.2851 5.702 0.010 0.061 0.223 0.223 0.156 fl>,« 1° o mo 20 •5. 0> Q Sg 30 LU 35 5 s 0 20 40 60 80 100 120 V 5 s • 18 inch Dia. — •— 24inchDia —A— 30 inch Dia. -X- 36 inch Dia. K 5 \ \ 140 160 180 200 220 240 260 280 300 Allowable Capacity (kips) GEOCON £& INCORPORATED ^8»^ GEOTECHNICAL CONSULTANTS 6960 FLANDERS DRIVE - SAN DIEGO, CALIFORNIA 921 21 -297- PHONE 858 558-6900 - FAX 858 558-6159 RCM I DRILLED PIER ALLOWABLE AXIAL CAPACITY CARLSBAD CROSSROADS BUILDINGS 2724, 2726, 2728 & 2730 CARLSBAD, CALIFORNIA DATE 1 PROJECT NO. 05916-42-15B IFIG. 1 DATE.ENGINEERS ENGR. PROJECT SHEET. JOB NC ,tKf ~t*?W Caisson Schedule Bldg Bldg. Bldg. Bldg. .24 1 2 3 4 5 6 7 8 26 9 10 11 12 13 14 15 16 17 18 19 28 20 21 22 23 24 25 26 30 27 28 29 30 31 32 33 34 35 36 Tributary Width 36 35 40 33 30 32 24 29 Tributary Width 24 23 33 39 26 16 24 28 20 18 28 Tributary Width 27 27 27 27 27 27 27 Tributary Width 26 18 18 28 34 26 20 23 22 29 Load K 82.8 80.5 92 75.9 69 73.6 55.2 66.7 Load K 55.2 52.9 75.9 89.7 59.8 36.8 55.2 64.4 46 41.4 64.4 Load K 116.1 116.1 116.1 116.1 116.1 116.1 116.1 Load K 59.8 41.4 41.4 64.4 78.2 59.8 46 52.9 50.6 66.7 30" Dia Caisson Weight K 14.1 18.5 25.9 22.2 25.2 25.9 18.5 14.8 Caisson Weight K 14.8 18.5 26.6 29.6 22.9 22.2 22.2 37.7 42.2 41.4 42.2 Caisson Weight K 40.0 40.0 39.2 38.5 38.5 37.7 37.7 Caisson Weight K 18.5 18.5 18.5 19.2 22.2 18.5 18.5 18.5 18.5 20.0 0.74 Total Weight K 96.9 99.0 117.9 98.1 94.2 99.5 73.7 81.5 Total Weight K 70.0 71.4 102.5 119.3 82.7 59.0 77.4 102.1 88.2 82.8 106.6 Total Weight K 156.1 156.1 155.3 154.6 154.6 153.8 153.8 Total Weight K 78.3 59.9 59.9 83.6 100.4 78.3 64.5 71.4 69.1 86.7 KLF Est. Fill Ft 7 12 17 17 22 22 17 12 Fill Ft 12 17 22 22 22 22 22 37 47 47 42 Fill Ft 27 27 26 25 25 24 24 Fill Ft 17 17 17 17 17 17 17 17 17 17 Depth into Bedrock Ft 12 13 18 13 12 13 8 8 Depth into Bedrock Ft 8 8 14 18 9 8 8 14 10 9 15 Depth into Bedrock Ft 27 27 27 27 27 27 27 Depth into Bedrock Ft 8 8 8 9 13 8 8 8 8 10 3.94 Caisson Capacity K 97.3 101.2 120.9 101.2 97.3 101.2 81.5 81.5 Caisson Capacity K 81.5 81.5 105.2 120.9 85.5 81.5 81.5 105.2 89.4 85.5 109.1 Caisson Capacity K 156.4 156.4 156.4 156.4 156.4 156.4 156.4 Caisson Capacity K 81.5 81.5 81.5 85.5 101.2 81.5 81.5 81.5 81.5 89.4 Total Wt KLF Depth Ft 19 25 35 30 34 35 25 20 Total Depth Ft 20 25 36 40 31 30 30 51 57 56 57 Total Depth Ft 54 54 53 52 52 51 51 Total Depth Ft 25 25 25 26 30 25 25 25 25 27 2.3 2.3 4.3 2.3 Total 1281 DATE.ENGINEERS SHEET_ ENGR.JOB NO / PROJECT & 10/19/2009 Engineer MJH Burkett & Wong Sheet. Job Number Concrete Beam Design Loker No. s£B GB1 GB2 GB3 Box Box Lintel test <^ .oker Jorbe B In 18 18 X 36 36 36 24 24 12 12 24 16 16 12 12 12 8 /^T2 12 36 36 36 12 12 20 D In 20 20 32 "2> 32 24 32 24 10 6.1 13 68 48 90 6.1 6.1 s^& 6.1 6.1 21 27 42 6.1 8 33 fc KSI ^2 2 *»^3 ^"^ 3 3 3 3 3 3 5 5 5 3 *^5 4 3 3 4 4 4 3 3 3 Mu K-Ft 70 16 798 354•*~~5oa 427 112 112 11 4 160 1736 1736 77J- ^4' 4 320 4 4 391 532 320 4 9.5 717 Vu K 26.1 10 78 78 95 •y" 56 56 6.2 3.1 24.4 150 15S --^165 3.1 3.1 40 3.1 3.1 78.3 106 160 3.1 1 45.6 B1 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 -" 0.8 0.8 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 As max Sqln 4.88 4.88 15.62 11.71 15.62 — ttrH10.41 7.81 1.63 0.99 vJrSS " 23.14 16.33 22.97 0.99 0.99 6.51 0.99 0.99 13.67 17.57 27.33 0.99 1.30 8.95 As reqti Sq In 0.80 0.18 5.90 3.44 6.71 4.19 ^Xijg •Tote 0.25, ^x*dTl5 3.10 5.90 8.74 1.93 0.15 0.15 1.65 0.15 0.15 4.36 4.57 1.71 0.15 0.27 5.34 Asmin Sq In 1.20 1.20 3.84 2.88 3.84 2.88 2.56 s^lj®^IMQ 0.24 1.04 3.63 2.56 3.60 0.24 0.24 1.20 0.24 0.24 2.52 3.24 5.04 0.24 0.32 2.20 As Sq In 1.06 0.24 5.90 3.44 6.71 4.19 JWJS 1.41 0.33 S^O.20 3HQ 5.90 8.74 2.57 0.20 0.20 1.65 0.20 0.20 4.36 4.57 2.28 0.20 0.32 5.34 Avmax Sq In/Ft 1.61 1.61 3.22 3.22 3.22 (x^3*T22 2.15 2.15 1.07 1.07 2.15 XJ-85 r8§. 1.39 1.07 1.07 0.83 1.07 1.07 3.72 3.72 3.72 1.07 1.07 1.79 Avmin Sq In/Ft 0.18 0.18 0.36 ^36 0.36 0.24 0.24 0.12 0.12 0.24 0.16 0.16 \fl/l2 oTa 0.12 0.08 0.12 0.12 0.36 0.36 0.36 0.12 0.12 0.20 Av Sq In/Ft 0.18 0.09 _^x8T36 0.36 0.36 0.53 0.24 0.25 0.00 0.00 0.24 0.28 0.59 0.27 .0.00 ^&QO 0.09' 0.00 0.00 0.36 0.40 0.36 0.00 0.00 0.20 Max Av Spacing In -1008- -16.00 -12.00 -16.00 12.00 -16.00 -12.00 0.00 0.00 -6.50 -34.00 24.00 45.00 0.00 0.00 0?0& 0.00 -10.50 -13.50 -21.00 0.00 0.00 -16.50 Aval Spacing Sole*- ** 0.15 0.00 0.48 0.36 0.48 0.53 0.32 0.25 0.00 0.00 0.13 0.80 1.18 1.02 0.00 0.00 0.18 ^ 0.00 "~0^0 0.32 0.45 0.63 0.00 0.00 0.28 • jgm**#* ««^ '"• Notes: Assumes Grade 60 reinforcing, use 1.5 x A for Grade 40 Negative As or Av indicate an overreinforced condition .. If "Max Av Spacing" is negative than Av is "0" for members falling under the exception in AC111.5.6.1 Uses Fee=.6 for Shear 4 C N.5IJ .TAh REMEDIAL FOUNDATION RECOMMENDATIONS CARLSBAD CROSSROADS BUILDINGS 2724, 2726, 2728, AND 2730 LOKER AVENUE CARLSBAD, CALIFORNIA PREPARED FOR H. G. FENTON COMPANY SAN DIEGO, CALIFORNIA JUNE 30, 2009 PROJECT NO. 05916-42-15B GEOCON INCORPORATED GEOTECHNICAL CONSULTANTS Project No. 05916-42-15B June 30, 2009 H. G. Fenton Company 7577 Mission Valley Road, Suite 200 San Diego, California 92108 Attention: Mr. Brian Gates Subject: CARLSBAD CROSSROADS BUILDINGS 2724, 2726, 2728, AND 2730 LOKER AVENUE CARLSBAD, CALIFORNIA REMEDIAL FOUNDATION RECOMMENDATIONS Dear Mr. Gates: In accordance with your request, we have prepared this report providing recommendations to reduce the potential for continued foundation settlement at each of the subject buildings. We have reviewed several geotechnical reports pertaining to the Carlsbad Crossroads complex (see List of References). Recently, Geocon Incorporated performed exploratory borings to assess the depth of existing fill soils, and to install slope inclinometers to measure if lateral slope movement is occurring. The locations of the borings and slope inclinometers are shown on Figure 1. Logs of all of the borings performed at the site are provided in Appendix A. BACKGROUND Geocon Incorporated performed a visual reconnaissance of the subject buildings in February 2001 as part of a purchase due diligence effort. At that time, signs of soil settlement were observed at Buildings 2726 and 2728. In December 2002 (see Geocon, 2002), a portion of the western perimeter wall of Building 2728 was underpinned using drilled piers. The piers are 30 inches in diameter and extend to depths between 35 and 55 feet below existing ground. The piers were embedded into the underlying Santiago Formation a depth of at least 8 feet. Subsequent to underpinning the 2728 building, the northern exterior building wall has experienced foundation movement resulting in separation between panel joints. At several locations concrete pieces near the top of the panel walls have spalled off. The area where the majority of continued movement has been observed is outside the portion of the building wall that was underpinned in 2002. At the 2726 building, foundation movement was observed along the western side. The interior concrete slab showed settlement of several inches inclined toward the western exterior wall. Compaction 6960 Flanders Drive • San Diego, California 92121-2974 • Telephone (858) 558-6900 • Fax (858) 558-6159 grouting was used to stabilize foundation soils in October 2005. Subsequent movement has been observed on the western perimeter building wall subsequent to compaction grouting. A recent floor level survey showed approximately 3/4-inch of movement since the last previous floor level survey performed in January 2008 (see Figure 2). Recently Geocon Incorporated performed floor level surveys on the 2724 building and the northern portions of the 2728 and 2730 buildings (see Figures 3 through 5). Based on our readings it appears the interior concrete slab slopes toward the exterior building wall closest to the slope. We previously installed slope inclinometers near the 2726 and 2728 buildings. In May 2009 we installed three additional inclinometers along the top of the slope near the 2724, 2728, and 2730 buildings. These inclinometers are being monitored monthly. We also installed crack monitors on the interior and exterior of Building 2728. These monitors are also being monitored monthly. Stuart Engineering previously set monitoring points along the exterior on each of the subject buildings and is performing periodic surveys. A summary of slope inclinometer readings and crack monitors will be provided in a future report. RECOMMENDATIONS 1.0 Monitoring 1.1 We recommend continued monitoring of the slope inclinometers to assess if deep seated slope movement within the Santiago Formation is occurring. Installation of drilled caissons for support of existing buildings should not be performed until sufficient monitoring of the inclinometers has been performed and the data shows deep seated movement is not occurring. We recommend a monitoring period of at least 6 months. 2.0 Underpinning 2.1 Provided deep seated slope movement is not occurring, it is our opinion exterior building walls can be underpinned with drilled piers extending through the underlying fill soils and at least 8 feet into dense formational soil. The piers should have a minimum diameter of 30 inches and may be designed for an allowable end-bearing capacity of 10,000 psf. Additional capacity may be achieved by side friction of the pier for an embedment into formational soil greater than three feet. An allowable side friction value of 500 psf is recommended. The allowable design values take into consideration the potential for negative skin friction associated with continued settlement of fill soils. 2.2 As a minimum, the exterior walls closest to the slope should be underpinned. We also recommend underpinning extend along exterior walls at each end of the building Project No. 05916-42-15B -2- June 30,2009 perpendicular to the slope to a sufficient distance where survey points show movement is not occurring. 2.3 Based on exploratory borings performed by Geocon Incorporated, the depth to formational Santiago Formation varies from as shallow as 16 feet (south end of 2724 Building) to as deep as 54 feet at the north end of 2726 Building. The depth to formational soil based on exploratory borings is shown on Figure 1. 2.4 Because a significant portion of the pier capacity will be developed by end bearing, the bottom of the borehole should be cleaned of all loose cuttings prior to the placement of steel and concrete. Experience indicates that backspinning the auger does not remove loose material and a flat cleanout plate or hand cleaning is necessary. Concrete should be placed within the excavation as soon as possible after the auger/cleanout plate is withdrawn to reduce the potential for discontinuities or caving. Borehole sidewall instability may occur if cohesionless or uncompacted soils are encountered. If groundwater is encountered, it should be pumped from the boring prior to placement of concrete or a wet method of construction should be employed. Casing may be required to maintain the integrity of the caisson excavation, particularly if seepage or sidewall instability is encountered 2.5 Concrete should be placed in such a way as to minimize segregation of the aggregate. Tremies should be utilized for concrete placed below groundwater or dry holes deeper than 20 feet. 2.6 All pier excavations should be observed by Geocon Incorporated to assess that the required embedment depth has been achieved and that the soil conditions do not differ significantly from those anticipated. 3.0 Interior Slab 3.1 A structural engineer should review the floor-level survey data to determine if slab removal and replacement should be performed. Slab thickness, reinforcement, and dowelling details should be provided by the structural engineer. Continued settlement of the subgrade soils beneath the interior slab could result in slab cracking and objectionable floor surface distortions. 4.0 Plan Review and Monitoring 4.1 Plans for the underpinning should be reviewed by Geocon Incorporated prior to finalizing. Project No. 05916-42-15B - 3 - June 30,2009 4.2 It is also recommended that monitoring of the settlement points established by Stuart Engineering be continued. If there are any questions regarding this report, or if we may be of further service, please contact the undersigned. Very truly yours, GEOCON INCORPORATED Rodne/CvAlikesell GE2 RCM:dmc (3) Addressee Project No. 05916-42-158 June 30, 2009 1 0 O5O f saofli siiu a 5 (N O58!Si I «1 ill* -1.0-1 CO 1 £ co i § !Z5SO5Og APPENDIX A LOGS OF EXPLORATORY BORINGS FOR CARLSBAD CROSSROADS BUILDINGS 2724, 2726, 2728, AND 2730 LOKER AVENUE CARLSBAD, CALIFORNIA PROJECT NO. 05916-42-15B PROJECT NO. 05916-42-15 DEPTH IN FEET - - 2 - - 4 - - 6 - - - 8 - - - 10 -1 V - - 12 - "" *• - 14 - " ~ - 18 - « - - 18 - - - 20 - - 22 - • 24 - - - 26 - • 28 - " SAMPLE J NO. £ E /* 'Aj j Bl-1 %A/ > V /V/ /AS Bl-2 Ip / IK\k''< 1 r ' 1 1 ' i k '1 J/1 / ^MX VBl-3 K, •/> TO K^\Y^ 1 1 >BM K-/•/ / H/ XBl-5 H> /RJ/ / K' / P Bl-6 l^/ Bl-7 ^/ lj// Bl-8 K/ m A/A/A/ & ~ 5 O y ../y Af / *As A/ AJ f tSyfy/ r i*A/J AsAJ / ,A// /A / 1 /V// /v/ , /v I/', i/ /^// 1ry ^f SOIL CLASS (USC8) CL CL BORING B 1 ELEV. (MSL) DATE COMPLETED 03-05-2005 EQUIPMENT IRA-300 BY: R MIKESEU. MATERIAL DESCRIPTION PREVIOUSLY PLACED FILL Soft, brown, Silty, CLAY; trace sand Very moist to wet, very dark brown to brown, Silty CLAY; trace sand -Stiff, very moist, gray/orangish, very silty clay with sand -Very stiff, very moist, olive brown, silty clay, small siltstone/claystone trafimcnts -Cray to orangish brown -Drove on cobble last 2 indies ETRATKDN IilSTANCE 1OWS/FT.) 1?UJg)o.«-* - ~ - 13 - - - - 17 19 23 31 ' DENSITY 1;P.C.FJ 1£a 87.8 99.3 98.1 97.8 99.6 tf? ll •s Q " 31.2 24.7 24.9 25.0 21.4 Figure A-1, Log of Boring B 1, Page 1 of 2 0691642-1S.GPJ SAMPLE SYMBOLS D ... SAMPUNQ UNSUCCESSFUL H... DISTURBED OR BAG SAMPLE _. STANDARD PENETRATION TEST H ... CHUNK SAMPLE . DRIVE SAMPLE (UNDISTURBED) . WATER TABLE OR SEEPAGE NOTE IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 05916-42-15 DEPTH IN FEET - 30 - - 32 - - - 34 - - 38 - ^ — - 38 - - - 40 - - - 42 - * — . 44 - - 48 - " • 48 - - 50 - </ SAMPLE I NO. ; 1 Bl-9 W& rV '\ VVyy \ V SA/A/A/As Bl-10 ~%/ XA/- A/As x / // • XXBl-11 iX/ PBl-12 W/ H/'tit/i/ Ky *PvV\]sy\\s\sBI 13 WvB1-13 BX-WVrvV\ ij j\Y '\ Y /\ V / \A RI.U •n i e*" t§ i o %/ 1AjXLA/syxt AJ //AjS tASA/A//iA/> .r fAS/ 1sL// ns/ f '/f AJ XL Aj f jAj A/AJ %/ ^AsA , /vxt/ r / r / •• SOIL CLASS (USCS) CL ML BORING B 1 ELEV. (MSL) DATE COMPLETED 034)5-2005 EQUIPMENT IR A-300 BY: R MIKESELL MATERIAL DESCRIPTION -Very stiff, very moist, dark olive brown with light gray, silty clay -Concretion in sampler shoe, no recovery -Olive brown to dark brown, some layers of clayey sand, small claystone fragments -Olive brown with gray and orange, very silty clay to clayey silt with sand SANTIAGO FORMATION Very dense, moist, light olive brown with gray and orangish mottling, Sandy _ On TOfV^XTB *A C?*1*» f~*jm C A VTT^OTWRTD f\ SELTSTONE to Silry, fine SANDSTONE / BORINO TERMINATED AT SOWFEET No ground water encountered Backfilled with 10 ft* of bentonite slurry (20 to 50 feet) and 9 bags of bentonite chips (upper 20 feet) z O F) CfP zCill<£fL~ 38 - - - - ~ - 38 - 34 - £WT gq Q 101.5 94.5 ^?UJC. t |l 8 20.6 23.7 Figure A-1, Log of Boring B 1, Page 2 of 2 05916-4Z-15.GPJ SAMPLE SYMBOLS G - SAMPLING UNSUCCESSFUL B ... DISTURBED Cfl BAG SAMPLE ... STANDARD PENETRATION TEST B... CHUNK SAMPLE .. DRIVE SAMPLE (UNDISTURBED) .. WATER TABLE OR SEEPAGE NOTE: IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 05916-42-15 DEPTH IN FEET - - 2 - - 4 - _ - 6 - - 8 - - 10 - - 12 - - 14 - - 16 - -i - - 18 - - 20 - - 22 - • 24 - - • 26 - - 28 - SAMPLE NO. B2-1 1 1B2-2 B2-3 1 1 B2-4 1 1PL B2-5 I B2-6 1 1 B2-7 1 >yf////////>r./v\K V I I I V YVJxV, \V IIk k// _y I\V. 5E X1 Sf/ f///X/X / X X Xx X/ X X X X ^XX X X X/ XX X X/ X X X X ^1 / / / / / / / /s / ' ?i\ TJ ^Jr Xy X X X X X X X X X X X// X XxXX/x/x/x/x ^xj/xVxyxlxXL. r / rY<fy ty/xxjx /y/ /y/ /y//f/// *^' a 1™<ji5 c SOIL CLASS (USCS) CL SC BORING B 2 ELEV. (MSL) DATE COMPLETED 03O5-2005 EQUIPMENT IR A-300 BY: R. MIKESEU. MATERIAL DESCRIPTION PREVIOUSLY PLACED FILL Firm, very moist, dark brown, Silty CLAY -Drove on orangish brown with white flakes concretion -Very stiff, very moist, olive brown, silty clay with sand and small siltstone fragments Very moist, dark brown to grayish green, plastic CLAY -Very dark brown to olive brown, highly plastic, fat clay O(j Ij^ P 2S £*£ ^ Sj i^l •^-fflmgjccS - - . 16_ 30 ^ 28 25 ^^ ""f1 ^ ^*°22c^^° 102.8 98.8 92.0 ^3*££ H2 5 £2| jjg Q ° 21.9 23.6 26.0 Figure A-2, Log of Boring B 2, Page 1 of 2 SAMPLE SYMBOLS Q-.. SAMPLING UNSUCCESSFUL S... DISTURBED OR BAQ SAMPLE |] ... STANDARD PENETRATION TEST B... CHUNK SAMPLE .. DRIVE SAMPLE (UNDISTURBED) . WATER TAKE OR SEEPAGE NOTE: IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 05916-42-15 DEPTH IN FEET - - 32 - - 34 - - 36 - - 38 - - - 40 - - 42 - _ AA _ *r*r — -" 46 SAMPLE NO. B2-8 I 1 LB2-9 I 1 82-10 1 1 B2-11 Ir Q Q j_^ ^ 1yr ••*>•' K^1 H \J / JypC{,%w M* >f >ir / f §/'V/JX /vvM/ /VVXfy m /." cc < §° (9 SOIL CLASS (USCS) SC CL ML BORING B 2 ELEV. (MSL) DATE COMPLETED 03-05-2006 EQUIPMENT IR A-300 BY: A MIKESELL MATERIAL DESCRIPTION Medium dense, very moist, olive brown with orange to light gray, very Clayey SAND Stiff, very moist, olive brown with gray, Silty CLAY; trace fine sand, medium plasticity SANTIAGO FORMATION Very dense, moist, olive gray with orange staining, Sandy/Clayey SILTSTONE BORING TERMINATED AT 46 FEET No groundwater encountered Backfilled with 16 ft* of bentonite slurry pgt|gi^f y* ^iHi ttl gQn.11 28 - - - 29 45 "50/5" W-T1!oc 96.1 ^^ ^fc i| 9K JCCe° 23.9 Figure A-2, Log of Boring B 2, Page 2 of 2 SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL §1... DISTURBED OR BAG SAMPLE _. STANDARD »>ENETRATION TEST ... CHUNK SAMPLE .. DRIVE SAMPLE (UNDISTURBED) .. WATER TABLE OR SEEPAGE NOTE: IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 05916-42-15B DEPTH IN FEET - 2 - _ - 4 - - - 6 - - - 8 - - 10 - - 12 - - 16 - - - 18 - - 20 - - 22 - - 24 - - 26 - - • 28 - SAMPLE NO. B3-1 •nyB3-2 |r B3-3 IE PI - 0 B3-5 B3-6 • B3-7 K B3-8 IF B3-9 m \lB3-10 If. 1 * i /^i fa&'$$^n ?^)&m § . ." -'. ! •* * r". f; . ' '; :: '••*. *; -/ / ":; j .^- • '•'• r.:$:&M'8$$M.4 i« SOIL CLASS sc CL ML CL SC ML BORING B 3 ELEV. (MSL.) DATE COMPLETED 05-19-2009 EQUIPMENT DIEDRICH 1 20 BY: N.Q. BORJA MATERIAL DESCRIPTION FILL Medium dense to dense, moist, yellowish brown to olive brown and gray, Clayey, fine to medium SAND; some silt Hard, moist, mottled yellowish brown and gray, Sandy CLAY; some silt Hard, moist, molded olive brown and gray, Sandy SILT; some fragments of gypsum -Becomes mottled yellowish brown to dark brown and gray Hard, moist, dark brown to dark olive brown, Sandy CLAY Dense, moist, mottled yellowish brown and gray, Clayey, fine to medium SAND; some silt -Excavates with some chunks of gray siltstone Hard, moist, mottled yellowish brown and dark brown and gray, Sandy SILT; I Q» _ - - 44 - - 37 52 42 40 34 49 44 'DENSfTYP.C.F.)110.8 115.4 U2.5 111.5 119.2 |f ^§ 14.9 15.8 17.0 16.3 14.3 Figure A-1, Log of Boring B 3, Page 1 of 2 05916-42-158.GPJ SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL H... DISTURBED Ofl BAG SAMPLE U ... STANDARD PENETRATION TEST H ... CHUNK SAMPLE . DRIVE SAMPLE (UNDISTURBED) .. WATER TABLE OR SEEPAGE NOTE IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONOmONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 05916-42-1 SB DEPTH IN FEET - 32 - SAMPLE NO. I B3-11 I B3-12 I f s ^ M 1Evr.rT i <0 sou. CLASS (USCS) SM BORING B 3 ELEV. (MSL.) DATE COMPLETED 05-19-2009 EQUIPMENT DIEDRICH 120 BY:N.CLBORJA MATERIAL DESCRIPTION tittle clay SANTIAGO FORMATION Very dense, damp, molded yellowish brown to light gray and gray, Silty, fine- to medium-grained SANDSTONE BORING TERMINATED AT 34 FEET No groundwater encountered Backfilled with 1 1 .8 ft1 of bentonite slurry ETRAT1ONIISTANCEDWS/FT.)(X. * *"""* 78 66 ' DENSITYP.C.F.)£o 11L3 Ujg ^8 9.5 Figure A-1, Log of Boring B 3, Page 2 of 2 0591&-42-15B.GPJ SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL 0... DISTURBED OH BAO SAMPLE D ... STANDARD PENETRATION TEST B-CHUNK SAMPLE ... DRIVE SAMPLE (UNDISTURBED) . ... WATER TABLE OR SEEPAGE NOTE: THELOQ OF SUBSURFACE CONDTTIONS SHOWN HEHEON APPLIES ONLY AT THE SPHaFIC BCfllN3 Cfl TRENCH LOCATION AND AT THE DATE INDICATED. IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 05916-42-15B DEPTH IN FEET - 0 - — —- 2 - - 4 - —- 6 - - 8 - " - 10 - - 12 - - - 18 - - 20 - - 22 - 24 " - 26 - - 28 - - 30 - j <SAMPLE *• NO. ! 'y'v B4-1 p K X* B4-2 mf. iR?IP*" fe[K144 fe B4-5 || II ' B4-6 • LT • B4-7 Ijl fpB4-s |F:^ 1 £•(•'p>:3E: :1p a 3 53 2S ^ ! CD ^>* >£•''*&>./?. •'.$ '•#•/^. •:jf •^i & & r5? 5?"•J^ •/y. | • •;. ' . • • ;! . • . • '. Iv •'[' .¥ ::(: ^; Iv SOIL CLASS (USCS) SC CL SC CL ML ML SM BORING B 4 ELEV. (MSL) DATE COMPLETED 05-20-2009 EQUIPMENT NEDRICH 120 BY: N.Q. BORJA MATERIAL DESCRIPTION FILL Loose, damp, yellowish brown to olive brown, Clayey, fine to medium SAND Hard, moist, dark brown. Sandy CLAY; trace gray siltstone chunks Dense, moist, yellowish brown to olive brown and dark brown, Clayey, fine to medium SAND; some slit; trace rootlets Hard, moist, dark brown to dark olive brown, Sandy CLAY SANTIAGO FORMATION Hard, damp, gray, Sandy SILTSTONE; cemented; observed in shoe of Hard, damp to moist, mottled yellowish brown to olive brown, Sandy to Clayey SILTSTONE; trace caliche; some shell fragments -Becomes mottled yellowish brown and reddish brown and gray Very dense, mottled light gray and yellowish brown to reddish brown, Sihy, fine-grained SANDSTONE; trace clay -v -Poor recovery /- BORING TERMINATED AT 30V4 FEET No ground water encountered Backfilled with 10.5 ft1 of bentonite slurry ««o H§t**S <£ m ||| gccS - » "™ 33 50 42 ~50/5" 69 -50/1" §'">u» It Q 99.5 118.5 113.3 ^^ cc ^ 1 *£II 8 25.8 13.8 17.5 Figure A-2, Log of Boring B 4, Page 1 of 1 0591B-4a-1SaGPJ SAMPLE SYMBOLS D ~. SAMPUNQ UNSUCCESSFUL B - DISTURBS} OR BAG SAMPLE ... STANDARD PENETRATION TEST ... CHUNK SAMPLE . DRIVE SAMPLE (UNDISTURBED) . WATER TABLE OR SEEPAGE NOTE: IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 05916-42-15A DEPTH IN FEET - - 2 - - - 4 - - 6 - - 8 - - in -IU - 12 - - 14 - — - 16 - - 18 - - - 20 - - 22 - - 24 - - 26 - • 28 - " SAMPLE NO. I c •': •' .''. •*• • * *• •°"' " ' •.' ' £:;:'!: 'i -:- * - %•%£ ^H jj ii m 1$mmmPi& m m m INDWATER I6i SOIL CLASS (USCS) ML ML CL BORING LB 1 ELEV. (MSL) 3701 DATE COMPLETED 01-17-2008 EQUIPMENT BUCKET EZ BORE BY: 0. GONSMAN MATERIAL DESCRIPTION FILL Soft, damp, light olive brown, fine Sandy SILT -Hit water pipe at 2 inches Medium dense, Clayey SAND and chunks of Sandy SILTSTONE Stiff, olive tan, green and brown, fine to coarse Sandy CLAY -Olive green and brown, fat clay -Dark gray and black, organic clay (slight smell) minor sticks ETRATIONIISTANCEOWS/FT.)imiuige - - - - ~ -' DENSITY 1P.C.F.) I£Q If 2 O ° Figure A-1, Log of Boring LB 1, Page 1 of 3 OS81H2-15A (BORING B1 A INCUNOMETEBJ.QPJ SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL H ... DISTURBED OR BAG SAMPLE ... STANDARD PENETRATION TEST H ...CHUNKSAMPLE .. DRIVE SAMPLE (UNDISTURBED) .. WATER TABLE OR SEEPAGE NOTE IS NOT WARRANTS) TO BE REPRESENTATIVE OF SUBSURFACE CONDTDONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 05916-42-15A DEPTH IN FEET - 32 - _ _ - 34 - - 38 - — - 38 - - 40 - - 42 - - 44 - - 46 - . - 48 - • 50 - • ~ - 52 - - - 54 - - - 56 - - - 58 - SAMPLE NO. Jsn 1 ^ ^ f$ mm j$ 2®.w p my$mw w m ':^-.-j/:,'.i£ •S •Jr. * MrX -1 ,• + , , ' i f V t ' ( ' I ' ' ccpi§i SOIL CLASS (USDS) CL-ML BORING LB 1 ELEV. (MSL) 370* DATE COMPLETED 01-17-2008 EQUIPMENT BUCKET EZ BORE BY: a GONSMAN MATERIAL DESCRIPTION -Light tan, silty sand -Olive brown, silty, fat clay, some black decomposed wood chunks, organic rich layer -Dark gray, fat clay with white mottling -Olive green and gray, fine sandy clay with orange mottling, some dark gray and black clay \ -Undulating contact f SANTIAGO FORMATION Hard to very stiff, moist, olive gray, green and brown, thinly laminated, Clayey SILTSTONE with calcite mottling and orange brown iron oxide staining 57-60 -Weakly bedded at 5S.5 feet Q o t~t— zEill|gs _ •. - - - _• CWO1 p g~ (If ^,£E t— 11§ Figure A-1, Log of Boring LB 1, Page 2 of 3 059164M5A (BOHING B1 ft INCUNOMETERJ.GPJ SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL @ ... DISTURBED OR BAG SAMPLE B ... STANDARD PENETRATION TEST H ... CHUNK SAMPLE .. DRIVE SAMPLE (UNDISTURBED) .. WATER TABLE OR SEEPAGE NOTE IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 05916-42-15A DEPTH IN FEET - - 62 - - 64 - - 66 - - 68 - - 70 - - 72 - - 74 - - 76 - - - 78 - on _- oU - - - 82 - - 84 - SAMPLE NO. ; ' \ ;• • \'< 1 ,. t * • 4X *• . * K ^ <d | EE 3 o /, "^ , ' ' ' , '' >' ' ' ' :'. *:•:•:» • *• * *'•***« x .. SOIL CLASS (USC8) onSP ML BORING LB 1 ELEV. (MSL) 3701 DATE COMPLETED 01-17-2008 EQUIPMENT BUCKET EZ BORE BY: D. GONSMAN MATERIAL DESCRIPTION -Brownish gray (slightly remolded) thinly laminated silty claystone with wet, thin yellow paste like interbeds (Troy's worm beds) dominant fractures ???, 55°NW -Becomes hard below 64 feet -Some near vertical fractures filled with yellow clay infilling -Concreted layer approximately 6 inches thick -Hard, light ottve tan, siltstone Weak, brown iron stained, wet, coarse sand, organic rich layer at base \ o|j|H\jA m mtcijf *f mcnCw uift^fc . y Dense, damp, gray and dark gray, fine SANDSTONE -Stiff, dark brown, claystone Stiff, damp, dark gray brown, massively bedded, fine Sandy, organic rich, SILTSTONE BORING TERMINATED AT 86 FEET Groundwater encountered at 86 feet Kzf |1| 2 ffl -3 CL *^ - " - - - - - - - - - - - - w~>i§ rr *** ' Q S^ l| K n o Figure A-1, Log of Boring LB 1, Page 3 of 3 06916-42-15A (BORING Bt & INCUNOMETEHJ.GPJ SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL S... DISTURBED OR BAG SAMPLE ... STANDARD PENETRATION TEST ... CHUNK SAMPLE .. DRIVE SAMPLE (UNDISTURBED) .. WATER TABLE OR SEEPAGE NOTE IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 05916-42-15A DEPTH IN FEET I SAMPLE Ma SOIL CLASS (U8C8) BORING I 1 ELEV. (MSL) 3701 DATE COMPLETED 02-23-2007 EQUIPMENT LIMITED ACCESS RIG B" DIG-BIT BY: D. GONSMAN o - 0 MATERIAL DESCRIPTION - 2 - - 4 - - 8 - - 10 - - 12 - - 14 - - 16 - - 18 - - 20 - - 22 - 24 - 26 - 28 - 11-1 11-2 11-3 11-4 n-5 11-6 11-7 11-8 sc CL FELL Loose, moist, olive brown, Clayey SAND -Medium dense, olive tan, clayey sand -Finn sandy clay SANTIAGO FORMATION Hard, damp, light olive tan and olive gray, CLAYSTONE -Light gray siltstone 11 15 32 62 53 75 Figure A-1, Log of Boring I 1, Page 1 of 2 0581W2-15A (B1 &T1 THRU T2J.GPJ SAMPLE SYMBOLS D - SAMPUNQ UNSUCCESSFUL H... DISTURBED OR BAG SAMPLE ... STANDARD PENETRATION TEST ... CHUNK SAMPLE .. DRIVE SAMPLE (UNDISTURBED) .. WATER TABLE OH SEEPAGE NOTE IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 05916-42-15A DEPTH IN FEET - 32 - - 34 - — - 38 - - 38 - - 40 - - 42 - - 44 - - • 48 - - 48 - SAMPLE NO. 11-9 >5sQ | HP w w m 1ii-io teggg 1UKn-ii liiiirw cc£§3J1 CD son. CLASS (USCS) BORING 1 1 ELEV. (MSL) 370* DATE COMPLETED 02-23-2007 EQUIPMENT LIMITED ACCESS RIG 8" DIG-BIT BY: D. GONSMAN MATERIAL DESCRIPTION -Very dense, damp, light olive gray and green, silty, fine sandstone -Cemented layer approximately 1 foot thick -Light orange brown BORING TERMINATED AT 48 FEET No groundwater encountered Backfilled with approx. 14 ft* of cement-bentonite grout (2 part portland/1 part bentonite/55 gal. water) g P zC<J <C S ill QL *~* - - " SOfS" ' 5015" ' 50/3" «U2J ^7 ^ 0 u,gDC .2 5il" Figure A-1, Log of Boring I 1, Page 2 of 2 0501WJM5A <B1 &T1 THHU T2).QPJ SAMPLE SYMBOLS Q -. SAMPLING UNSUCCESSFUL I.- DISTURBED OR BAG SAMPLE D ... STANDARD PENETRATION TEST B ... CHUNK SAMPLE .. DRIVE SAMPLE (UNDISTURBED) . WATER TABLE OR SEEPAGE NOTE: IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 059f 6-42-15A DEPTH IN FEET - - 2 - 4 - 6 -_ - 8 - -i - 10 - - - 14 - - - 18 - - 18 - - 22 - - 26 - - 28 - SAMPLE NO. 12-1 12-2 IF >^iE !/y$r ^ ;•'/w- ••. ? '/•'. 'fjfc i& X •'•A'4 .fO w &. /'jf XT«r *-%'9%/ / s/ '•A 11m % % \j\i $'$ 'f~t % X'/: ft 'f' f 1 r^'VV '4 y~/ 1 1 t S / ' f S / -x ^ ^ / 1i1 cc 1Jl t i 5? (9 SOIL CLASS (U5CS) SC SM-SC SC ML CL BORING 1 2 ELEV. (MSL) 370* DATE COMPLETED 02-O6-2008 EQUIPMENT CME SS BY: N.N. BORJA MATERIAL DESCRIPTION PREVIOUSLY PLACED FILL Loose, moist, light olive brown to gray, Clayey, fine to medium SAND Loose, damp to moist, brown to dark brown, Silly to Clayey, fine to medium SAND -Becomes medium dense to dense, yellowish brown to olive brown; trace organics and wood chips -Rock encountered Dense, damp , olive brown. Clayey, fine to medium SAND -No recovery due to rock Stiff, damp to moist, brown to olive brown, Clayey SILT SANTIAGO FORMATION Hard, damp, olive brown to green, Silty CLAYSTONE; strongly cemented; excavates olive brown to greenish brown O ri t^*"PzE<^ ^ JjS 5^1 2 {3mgccS - - - „ - 5076" 43 W CO'TZ "• >.&. 0 LU ^ CC ^•J *» 55 2 O ° Figure A-2, Log of Boring I 2, Page 1 of 4 0581W2-15A (BORING B1 & INCUNOMETERJ.QPJ SAMPLE SYMBOLS D... SAMPUNQ UNSUCCESSFUL B - DISTURBED OR BAG SAWLE U ... STANDARD PENETRATION TEST H... CHUNK SAMPLE .. DRIVE SAMPLE (UNDISTURBED) .. WATER TABLE OR SEEPAGE NOTE: IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 05916-42-15A DEPTH IN FEET - - 32 - - - 34 - - 36 - - 38 - - 40 - - - 48 - - - 44 - - 46 - - 48 - - 50 - CfJOc • 54 - • • 56 - - • 58 - SAMPLE NO. , | ^i i i% ii!in2?mm§ vvV ' 1i J i % % i v?i1iyvfyyb ^3vK»" ' m9iPm,%w^%rjffi 1 P1 lOWf^ IT I I a i ^ TttiCy liiiil11ill W/M0Mw\1 SOIL CLASS (USCS) CL ML CL BORING 1 2 ELEV. (MSL) 3701 DATE COMPLETED 02-06-2008 EQUIPMENT CME 66 BY: N.N. BORJA MATERIAL DESCRIPTION -Excavates as olive brown, silty clay -Becomes yellowish brown to olive brown -Becomes olive brown to greenish brown and light gray Hard, damp to moist, olive brown to gray. Sandy SILTSTONE Hard, damp to moist, olive brown to yellowish brown, Silty CLAYSTONE oP'* ||| Q. *"" - - - ; -- -- zuTffl(j fe6 Q - «? i| Figure A-2, Log of Boring I 2, Page 2 of 4 Q591W2-15A (BORINQ B1 & INCUNOMETER).QPJ SAMPLE SYMBOLS D - SAMPLING UNSUCCESSFUL S ... DISTURBED OH BAQ SAMPLE I] ... STANDARD PENETRATION TEST H - CHUNK SAMPLE .. DRIVE SAMPLE (UNDISTURBED) .. WATER TABLE OR SEEPAGE NOTE IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 05916-42-15A DEPTH IN FEET - 62 - - 64 - - 66 - - - 68 - - 70 - - 72 - - 74 - - 76 - _ - 78 - - 80 - - 84 - - 86 - - 88 - SAMPLE NO. \ I t Jg^J 9 1m1|1fKi 1Imi 1iii if::1-( w] :$} #3 i | ^ i Ii1 EX ' 1nI1i%f '^i•y ' •• « 1 1 1•,•NDWATER \<n SOIL CLASS (USCS) CL SM BORING \ 2 ELEV. (MSL) 3W DATE COMPLETED 02-06-2008 EQUIPMENT CME 55 BY: N.N. BOFUA MATERIAL DESCRIPTION -Becomes brown -Becomes brown to dark gray Very dense, damp to moist, dark gray, Silty, fine- to medium-grained SANDSTONE; strongly cemented -Difficult drilling || Q. - - - - - ~ - - - - - - - . - -' DENSITYP.C.F.)|f §8 Figure A-2, Log of Boring I 2, Page 3 of 4 0591&42-1SA (BORING B1 & INCUNOMETER).GPJ SAMPLE SYMBOLS D ... SAMPUN3 UNSUCCESSFUL H ... DISTURBED OR BAG SAMPLE ... STANDARD PENETRATTON TEST ... CHUNK SAMPLE .. DRIVE SAMPLE (UNDISTURBED) . WATER TABLE OR SEEPAGE NOTE IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 05916-42-15A DEPTH IN FE6T - 92 - - - 94 -| - 96 - - 98 - - 100 - SAMPLE NO. C? I '$fc*t %:l^ra«r»>»•JKvC II JvKf] ?:$ :;t|ii ijlij: 1I § SOIL CLASS (USCS) SM BORING 1 2 ELEV. (MSL) 370- DATE COMPLETED 02-06-2008 EQUIPMENT CME 55 BY: N.I* BORJA MATERIAL DESCRIPTION BORING TERMINATED AT 100 FEET No groundwater encountered Boring annulus backfilled with approximate 15.5 cu. ft.of cernent-bentonite slurry S9E |||sy~ ; *- - £ PQ slII ° Figure A-2, Log of Boring I 2, Page 4 of 4 05916-42-15A (BORING 61 & INCXINOMETER).GPJ SAMPLE SYMBOLS D - SAMPLING UNSUCCESSFUL S... DISTURBED OR BAG SAMPLE |] ... STANDARD PENETRATION TEST B... CHUNK SAMPLE .. DRIVE SAMPLE (UNDISTURBED) .. WATER TABLE OR SEEPAGE NOTE: IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 05916-42-15B DEPTH IN FEET „. n - 4 - - 6 - - 8 - - 10 - - 12 - - 14 - - • 18 - - - 18 - • 20 - - 22 - • 24 - - • 26 - - 28 - SAMPLE NO. 13-1 1 I 13-3 1F 13-4 m0-5 I 1 13-6 I I [ 13-7 •<,1 < 1 **'• ^ . *** *" '••I* V P $ $ §v/j •• ' • "- .* 1 ;': '•' :• '•'. :• •{ '-. *"- ;.-. •". **Jr Vi:•/:•fy r*.* •, i^* * -33 !5 ff^f $ '**• 2 ^ 1 £5 % P * ', /.:' •/ •)/, i. .;•• ;• '•' ." '.'; I'; ''/, :••• i& •"yf •y? ir':';jf_ % % 1<2 | c SOIL CLASS ( SCS) SC CL SC ML CL BORING 1 3 ELEV. (MSL.) DATE COMPLETED 05-18-2009 EQUIPMENT CHEDFdCH 120 BY: N.a BORJA MATERIAL DESCRIPTION FILL Loose to medium dense, moist, dark gray, Clayey, fine to medium SAND Stiff, moist, dark brown, Sandy CLAY; trace organics -Becomes mottled yellowish brown to light gray and gray Medium dense, moist, yellowish brown to gray, Clayey, fine to medium SAND Very stiff, moist, mottled yellowish brown to olive brown and gray, Sandy SILT -Becomes mottled yellowish brown and gray to dark brown Very stiff, moist, dark olive brown, Sandy CLAY -Becomes mottled yellowish brown to gray and dark brown Zg-P 2 1 <g S£ m i-qiulOffiOL - 20 . - 32 39 33 31 S-,z u«UJ 1 1^3 jk* o:~0 113.6 114.0 113.0 yDC ^p z §""" C8 14.0 13^ 17.6 Figure A-3, Log of Boring I 3, Page 1 of 4 059104MSB.QPJ SAMPLE SYMBOLS D ... SAMPUNQ UNSUCCESSFUL E3 ... DISTURBED OR BAG SAMPLE |] ... STANDARD PENETRATION TEST B ... CHUNK SAMPLE .. DRIVE SAMPLE (UNDISTURBED) .. WATER TABLE OR SEEPAGE NOTE- IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 05916-42-15B DEPTH IN FEET "_ _ - 34 - - — - 36 - oo•aO - • 40 - - 42 - - 44 - - 46 - • 48 - • 50 - - 52 - - 54 - • 56 - - 58 - SAMPLE NO. 13-8 || « m: 13-9 Mil 13-10 jKjR?. I3"u K LM13-12 K- •?• 13-13 • . 13-14 Itn 13-15 | . [ ' !• & s5 | i i- jS a '$ . ... . "». ?j **'4*Jr, $ $~ V* t •J '] • . ' • SOIL CLASS (USCS) ML CL ML ML BORING 1 3 ELEV. (MSL) DATE COMPLETED 05-18-2009 EQUIPMENT DIEDRICH 120 BY: N.G. BORJA MATERIAL DESCRIPTION Very stiff, moist, mottled dark olive brown to green and dark brown, Sandy SILT Very stiff, moist, mottled dark olive brown and dark brown, Sandy CLAY -Becomes mottled yellowish brown to olive brown and dark brown Very stiff, moist, mottled olive brown to gray and dark brown, Sandy SILT; some clay -Becomes mottled yellowish brown to olive brown and gray SANTIAGO FORMATION Very stiff, damp to moist, mottled yellowish brown and light gray to gray, Sandy SILTSTONE -Becomes mottled yellowish brown and reddish brown and gray g PzE ^a *^ 0Si<2q njUJmQL 27 -v% - 29_ 44 27 27 44 g. CO^z u^ °CL£E"~ Q 113.2 110.6 s? H*f3 ^g 7% Ci§ 18.6 19.7 Figure A-3, Log of Boring I 3, Page 2 of 4 0691&42-15B.QPJ SAMPLE SYMBOLS D - SAMPUNQ UNSUCCESSFUL H ... DISTURBED OR BAG SAMPLE U ... STANDARD PENETRATION TEST H... CHUNK SAMPLE .. DRIVE SAMPLE (UNDISTURBED) .. WATER TABLE OR SEEPAGE NOTE- IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 05916-42-158 DEPTH IN FEET - - 62 - - 64 - - 66 - - 68 - - 70 - - 72 - - 74 - - 76 - fOto - 80 - • - 82 - - - 84 - • 86 - - 88 - SAMPLE NO. H|13-16 • fl 13-17 I 1. *" * • .•:13-18 ft* 1 •Ifl•y. 1 • •* •* •* ** * *f "f* «. >- H8o I 5 % c 1»:p ty %*•* I;ra r f|H; SOIL CLASS it |Cf*QV(USCS) SM ML BORING 1 3 ELEV. (MSL) DATE COMPLETED 05-18-2009 EQUIPMENT DIEORICH 120 BY: N.Q. BORJA MATERIAL DESCRIPTION -Becomes hard, mottled yellowish brown to gray, water introduced into drill hole for effective drilling Very dense, damp, mottled gray to dark gray and dark brown, Silty, fine-grained SANDSTONE Hard, damp to moist, mottled gray to dark gray, Sandy SILTSTONE z o S t«P zC|i| m^ffa.K 50/4" - - - - - ~5CV4V4" f—wo ^ fe. 1Q yi jR t O 9s§ Figure A-3, Log of Boring I 3, Page 3 of 4 0691&-42-1S8.GPJ SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL S - DISTURBED OH BAG SAMPLE I] ... STANDARD PENETRATION TEST B ... CHUNK SAMPLE .. DRIVE SAMPLE (UNDISTURBED) WATER TABLE OR SEEPAGE NOTE IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 0591&-42-15B DEPTH IN FEET - 92 - -, OA - 96 - - 98 - - 100 - SAMPLE NO. 13-19 |i n.7n ftn > • ' : ;•,';: • '.••'.'. .' • ..QROUNDWATERSOIL CLASS (USCS) BORING 1 3 ELEV. (MSL) DATE COMPLETED 05-18-2009 EQUIPMENT DIEDRICH 120 BY: N.G. BORJA MATERIAL DESCRIPTION -Excavates with shell fragments BORING TERMINATED AT 100V4 FEET No groundwater encountered Backfilled with 30.8 ft3 of bentonite/cement slurry PENETRATIONRESISTANCE(BLOWS/FT.)- - " wv DRY DENSITY(P.C.F.)MOISTURECONTENT {%)Figure A-3, Log of Boring I 3, Page 4 of 4 059tfr42-f5B.GPJ SAMPLE SYMBOLS D - SAMPLING UNSUCCESSFUL S3 ... DISTURBED OR BAQ SAMPLE ... STANDARD PENETRATION TEST B-. CHUNK SAMPLE .. DRIVE SAMPLE (UNDISTURBED) .. WATER TABLE OR SEEPAGE NOTE: IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 05916-42-15B DEPTH IN FEET - - 2 - - 4 - - - 6 - 0o - 10 - - 12 - - 14 - - - 16 - - 18 - * 20 - • 22 - - 24 - • 26 - - 28 - SAMPLE NO. 14-1 14-2 I 1 H-3 14-4 I T i14-5 I " 14-7 1 1 >•S| Q P •/y^'Y'/Zv'v^fr Vj? '{•/•r. \fc$ 1 •'. *'• *' • $/&•';/% \$% \/--\'^ j£ ™ sf y*f*' y ' ^^?f*•M.• «j..fIIK :g • IItM.VV #*•*•*•*•%*?.V.V.M.*•*•"•'.%"•** *d i a f-<i 3 a SOIL CLASS (USCS) SC ML SC SM BORING 1 4 ELEV.(MSL) DATE COMPLETED 05/1&-05/20/2009 EQUIPMENT DIEDRICH 120 BY: N.Q. BORJA MATERIAL DESCRIPTION FELL Medium dense to dense, damp to moist, Clayey, fine to medium SAND; some silt -Excavates with chunk of gray siltstone Stiff, damp to moist, mottled yellowish brown to light brown and gray, Sandy SILT Medium dense, moist, mottled yellowish brown and dark brown and gray. Clayey, fine to medium SAND SANTIAGO FORMATION Very dense, damp, yellowish brown to olive brown. Silly, fine- to medium-grained SANDSTONE; trace gravel; trace caliche; cemented OopP- z £ ||| zffijn Q. _ " - 46 - 32 33 "50/6" 75 t CO ""T* QX £ ""*0 114.6 118.0 112.7 ^^Uj£ fci| 2 O 0 15.5 11.5 11.9 Figure A-4, Log of Boring I 4, Page 1 of 4 OS91MZ-15B.GPJ SAMPLE SYMBOLS D - SAMPLING UNSUCCESSFUL B ... DISTURBED OR BAG SAMPLE •J ... STANDARD PENETRATION TEST ill ...CHUNKSAMPLE . DRIVE SAMPLE (UNDISTURBED) .. WATER TABLE OR SEEPAGE NOTE IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES, GEOCON PROJECT NO. 05913-42-15B DEPTH IN FEET - 32 - - 34 - - 36 - - 38 - - 40 - - 42 - - 44 - - - 50 - - 52 - - 54 - - 56 - - 58 - SAMPLE NO. ? "* n :F 1 i (9 ;j 1**' "' •!;!; SOIL CLASS (USCS) ML ML BORING 1 4 ELEV. (MSL) DATE COMPLETED 05/1945/20/2009 EQUIPMENT DIEDRICH 120 BY: N.a BORJA MATERIAL DESCRIPTION Hard, damp to moist, mottled yellowish brown to olive brown and gray, Sandy SILT Hard, damp to moist, mottled light reddish brown and gray, Sandy SILTSTONE; trace quartz fragments; cemented || |ls - - - - " 50/6" If o |f S8 Figure A-4, Log of Boring I 4, Page 2 of 4 0591&-42-t58.GPJ SAMPLE SYMBOLS D... SAMPLING UNSUCCESSFUL 0... DISTURBED OR BAG SAMPLE ... STANDARD PENETRATION TEST B ... CHUNK SAMPLE .. DRIVE SAMPLE (UNDISTURBED) .. WATER TABLE OR SEEPAGE NOTB IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 05916^42-158 DEPTH IN FEET - 62 - - 64 - - - 66 - - 68 - - 70 - - 72 - - 74 - • • 78 - - 78 - - 80 - - 82 - • 84 - • 86 - - - 88 - SAMPLE NO. , > 1 UTHOLOCGROUNDWA[r L C SOIL CLASS (USCS) BORING 1 4 ELEV. (MSL) DATE COMPLETED 05119-05/20/2009 EQUIPMENT DIEDR1CH 120 BY: N.G. BORJA MATERIAL DESCRIPTION -Becomes gray Z ni _— _PENETRATIRESISTANI(BLOWS/F- - - ~ " 50/4" £ P £ if Figure A-4, Log of Boring I 4, Page 3 of 4 059NW2-15B.GPJ SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL - DISTURBED OR BAG SAMPLE ... STANDARD PENETRATION TEST H... CHUNK SAMPLE . DRIVE SAMPLE (UNDISTURBED) WATER TABLE OR SEEPAGE NOTE IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 0591&42-15B DEPTH IN FFFT - 92 - - 94 - - 96 - - Oft - 100 - SAMPLE NO. !14-m - ca 0 P c ' • ' ' ; , . | / . . ; « < | 3 5 SOIL CLASS (USCS) BORING 1 4 ELEV. (MSL.) DATE COMPLETED OS/19-05/2(V2009 EQUIPMENT CMEDRICH 120 BY: N.G. BORJA MATERIAL DESCRIPTION Hard, moist, BORING TERMINATED AT 1OMFEET No groundwater encountered Backfilled witti 30.8 ft3 of bentonite/cement shiny •*«,, P§t |fel ^- ffimUJoc^ - - - - W-T g^^*^0 ^. tr £7 i| 2 Oo Figure A-4, Log of Boring I 4, Page 4 of 4 OS91»42-1SB.QPJ SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL S ... DISTURBED OR BAG SAMPLE ... STANDARD PENETRATION TEST B ... CHUNK SAMPLE .. DRIVE SAMPLE (UNDISTURBED) .. WATER TABLE OR SEEPAGE NOTE IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GBOCON PROJECT NO. 05916-42-158 DEPTH FEET - - 2 - - 4 - - 6 - - 8 - - 10 - - 12 - - 14 - - 18 - - 18 - "" - 20 - - 22 - - 24 - - 26 - - SAMPLE NO. 15-1 If 15-2 K i I 15-3 Kn if15-4 • U» 15-5 R : • a Q Q c y'-/$ V * r*f ';V&:p:'J: % ft$1 " *"£"• " *- ". '. * .:.'{;[ . ' £. $% •%&' 1^9 ^ ^l^ 5^^w: %^i *L* ' 1 a: <5 z p^§ SOIL CLASS (USCS) sc SM ML CL SM ML BORING 1 5 ELEV. (MSL) DATE COMPLETED 05-20-2009 EQUIPMENT DIEORICH 120 BY: N.a BORJA MATERIAL DESCRIPTION FILL Medium dense, damp to moist, yellowish brown to olive brown, Clayey, fine to medium SAND; some clay Medium dense, damp, mottled yellowish brown to olive brown and light gray, Silty, fine to medium SAND; trace clay; trace roots Hard, moist, mottled yellowish brown to reddish brown and gray, Sandy SILT; trace clay Hard, moist, mottled olive brown and dark brown, Sandy CLAY -Becomes dark olive brown SANTIAGO FORMATION Very dense, damp, mottled olive brown and light gray, Silty, fine- to medium-grained SANDSTONE; cemented -Becomes light reddish brown and light gray Hard, damp, mottled yellowish brown and light gray to gray, Sandy SELTSTONE; trace quartz; cemented ««,-,p2t: *S <^ o5E-ozfSgj CL - 37 - _ 66 - 48 - - 31 " - _ 50/2" - 58 S-T ffl * s-fe.ccQ 117.4 116.1 116.5 117J 104.0 .^ a: £• F- j o 5ig 13.4 14.2 14.3 14.6 23.8 Figure A-5, Log of Boring I 5, Page 1 of 2 0591WZ-15B.QPJ SAMPLE SYMBOLS D - SAMPLING UNSUCCESSFUL H ... DISTURBED OH HAS SAMPLE I] ... STANDARD PENETRATION TEST H. CHUNK SAMPLE .. DRIVE SAMPLE (UNDISTURBED) .. WATER TABLE OR SEEPAGE NOTE IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GEOCON PROJECT NO. 0591*42-158 DEPTH IN FEET - 32 - - 34 - - 36 - QO - - 40 - - • 42 - - 44 - — •> • 46 - - 48 - SAMPLE NO. 1 1* 15-7 •:i ', * '< 4 *« « » lj s^J <j?E • ..-• :'•'•• '•'.'• ' .'• vmttvmM.VM[If life I*. **f« ::^:i ili a yt2 3 § SOIL CLASS (USCb) SM BORING 1 5 ELEV. (MSL) DATE COMPLETED 05-20-2009 EQUIPMENT DIEDR1CH 120 BY.N.aBORJA MATERIAL DESCRIPTION Very dense, damp to moist, mottled light reddish brown and olive brown and gray, Silty, fine- to medium-grained SANDSTONE; trace quartz; weakly cemented -Becomes mottled yellowish brown to olive brown and light gray; uncemented BORING TERMINATED AT 50 FEET No groundwater encountered Backfilled with 15.4 ft* of bentonite/cement slurry 8«-P z£!S <t QJ 6-Q ^Lum Q. - - - "50/4" - "50/4" £ CO "T*Z U*| °2 5 ""*s jug ?I™* iZ §12 Q8 Figure A-5, Log of Boring I 5, Page 2 of 2 SAMPLE SYMBOLS D ... SAMPLING UNSUCCESSFUL B - DISTURBED OR BAG SAMPLE ... STANDARD PENETRATION TEST ... CHUNK SAMPLE . DRIVE SAMPLE (UNDISTURBED) .. WATER TABLE OR SEEPAGE NOTE IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES. GEOCON LIST OF REFERENCES 1. American Engineering Laboratories, Inc., Carlsbad Crossroads, Phase II - Bldg. F, G, H, I &J; Carlsbad, CA., dated Feb. 6, 1990. 2. American Engineering Laboratories, Inc., Interim As-Graded Soils Report, Carlsbad Crossroads Business Center, Phase II, Bldgs. F, G, H, I & J, dated Feb. 16, 1990. 3. American Engineering Laboratories, Inc., Interim As-Graded Soils Report, Carlsbad Crossroads Business Center, Phase III, Bldg., E, dated Sept. 5, 1990. 4. Construction Testing & Engineering Inc., Site Reconnaissance and Structural Distress Inspection, 2734 Loker Ave. West, Carlsbad, CA., dated March 19, 1999. 5. Geocon Incorporated, Carlsbad Crossroads, 2720 through 2738 Loker Avenue, Carlsbad, California, Geotechnical Due-Diligence Service, prepared by Geocon Incorporated, dated March 8, 2001. 6. Geocon Incorporated, Carlsbad Crossroads; Building #, 2728 Loker Avenue, Carlsbad, California; Consultation, dated September 17, 2001. 7. Geocon Incorporated, Remedial Foundation Recommendations, Carlsbad Crossroads, Building Located at 2728 Loker Avenue (Building E), Carlsbad, California, dated September 17,2002 (Project No. 05916-02-09). 8. Geocon Incorporated, Drilled Caisson Observation, Carlsbad Crossroads, 2728 Loker Avenue (Building E), Carlsbad, California, dated December 31, 2002. 9. Rick Engineering Company, Grading Plans for Carlsbad Tract 74-21, Carlsbad Airport Business Center, City of Carlsbad, as-built date October 30, 1987. 10. San Diego Geotechnical Consultants, Inc., Foundation Investigation, Carlsbad Oaks Business Center, Lots 3-6, Carlsbad, Calif., dated November 20, 1986. 11. United States Testing Company, Inc., Geotechnical Investigation, Carlsbad Crossroads, Building Pad E, Proposed Office Building, Carlsbad, Calif., dated July 20, 1990. Project No. 05916-42-15B June 30,2009 GEQGQN I K C Q B P O B A T E D GEQTECHNICAl CONSULTANTS Project No. 05S16-42-I5B: November 10, 2009 H, Q. Fentoji Company 7577 Mission Valley Road, Suite 20Q San Diego, California 92108 Attention: Mr, Brian Gates Subject; CARLSBAD CROSSROADS BUILDINGS 2124,2726,2728, AND 2730 LOKER AVENUE CARLSBAD, CALIFORNIA STRUCTURAL PLAN REVIEW References: 1, Remedial Foundation Recommendations, Carlsbad Crossroads B.uildings 2724, 272$,. 2728, and 2730 Loker Avenue, Carlsbad, California prepared by Geoeon Incorporated dated June 30, 2009 (Project No. 05916-42-1 SB). 2, Caisson Strmtural Plans for Carlsbad Crossroads Buildings 2724, 2726, 2728, and 2730 Loker Ayenm, Carlsbad, California prepared by Burfett & Wong, dated November 6,2009 (Project No, 10591 A), Dear Mr. Gates: In accordance with your request, we have reviewed the referenced structural plans prepared by Burkett & Wong for the caissons proposed at the /subject site. The purpose of our review was to assess whether the plans have been prepared in substantial eonforrnance with the recommendations outlined in the project geotechriical report It should be understood that our review was limited to ge:6;te:chnieal aspects of project development andi did not include review of other details on the referenced plans, structural or otherwise, that do not directly1 pertain to geotechnical aspects of construction. Based on our review, it is the opinion of Geocoti Incorporated that the plans have been prepared in substantial conformance with the recommendations preselited in the referenced project soil report. If you have any questions regarding this correspondence, or if we may be of further sfrvice, please contact the undersigned; at your convenience, Very truly yours, GEOCON: INCORPORATED RCM;NB:dmc (2) Addressee (1> Burkett & Wong Attention, Mr. Mike Flanders Drive « San Diego, California 92121,2974 « Telephone |858) 558-6900 ® Eaj« (SSS); 558^159 PC090034 2724 LOKERAVWEST CBAD CROSSROADS-INSTALLOOWCRPTF l-.AIS.QnMO Ti-i 01 . /Pi \D Cfa£f C^JtU (^ Pd /( /t«/£Xf. (du/w©^ it -b £&<&'' f' CI acv Approved , Date Building Planning Engineering ti^ Fire n/n/o^tm By Forms/Fees Sent Rec'd Due? CFD HazHealthAPCD Comments Building Planning Engineering By Date Need? Q Don Q Don Q Don Q Don Application Complete? Y N By. Fees Complete? Y N By: