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RPVCCA_CC_SR_2012_10_16_C_Contract_Miraleste_Canyon_Storm_Drain_Lining_ProjectCrrvOF MEMORANDUM RANCHO PALOS VERDES REVIEWED: TO: FROM: DATE: SUBJECT: HONORABLE MAYOR &CITY COUNCIL MEMBERS i~JIM HENDRICKSON,INTERIM DIRECTOR OF PUBLI~ WORKS OCTOBER 16,2012 AWARD CONTRACT -MIRALESTE CANYON STORM DRAIN STRUCTURAL LINING PROJECT CAROLYN LEHR,CITY MANAGE~_c..\... Project Manager:Andy Winje,Associate Civil Engineer ~ RECOMMENDATIONS 1.Authorize the Mayor and City Clerk to execute a sole source construction agreement to Sancon Engineering,Inc.in an amount of $354,258.Authorize a construction contingency of $35,000 (-10%)for a total construction authorization of $389,258. EXECUTIVE SUMMARY While performing work on the 2012 Storm Drain Rehabilitation and Lining Project staff has learned of structural deficiencies in large diameter pipes that cannot be corrected using methods available under the current contract.After consideration of alternatives, staff believes the repairs can most cost effectively be performed using a technology that .is currently offered by a sole source. BACKGROUND The Public Works department is currently performing the 2012 Storm Drain Rehabilitation and Lining Project to correct deficiencies in existing pipes on the City's east side.Typically,these deficiencies include excessive corrosion,small holes or perforations in the pipes and occasionally a collapsed section that can be excavated and replaced.These minor pipe repair excavations are known as point repairs.Recent video taping of storm drains in Miraleste Canyon at Palos Verdes Drive East (PVDE) revealed longitudinal failures in the inverts of the pipes,indicating significant structural C-1 deficiencies in these large diameter corrugated metal pipes (CMP).If not addressed, these structural deficiencies could lead to collapse of the pipes,which would both inhibit drainage of the canyon under PVDE and affect the ground surface above the drain, including the roadway. DISCUSSION These pipes are very deep (averaging 25 to 30 feet)and the compromised sections very long (several hundred feet)which makes replacement of the damaged sections using the point repair method very expensive.Furthermore,with winter storms only a short way off,taking the drain out of service for long periods would not be possible. Staff has explored the feasibility and cost of several alternatives including performing point repairs,excavation and replacement,structural PVC lining and a proprietary technology known as centrifugally-cast concrete pipe. Point repairs were ruled out because the needed repairs would require several very large poi(lt repairs which would ultimately cost more than replacing the pipe. Excavation and replacement of the pipe has been estimated to cost $994,000,would require a state approved (OSHA)shoring plan,and 45 days of construction once a contractor is awarded the project.Getting to that point will require an additional period of design and bidding that would likely delay the repairs untU next spring,after the rainy season.Estimating combined additional costs to design and inspect at about 15%and adding a contingency for unknowns of 15%,brings the project cost estimate for excavation and replacement to about $1.3 million. Another alternative is installation of a structural PVC liner that provides a structural pipe section that can support the loads now causing the failure of the CMP.However,this method is not preferred due to higher cost,shorter life expectancy of PVC versus concrete pipe,and the depth of the pipe which makes accessibility problematic for installation of the PVC product.Installing a structural PVC lining for this drain has been estimated to cost at least $700,000 and could be done this autumn.The processes would take about six weeks,with the pipe being out of service for a week at a time. The final alternative,centrifugally cast concrete,provides a cast in place concrete shell, installed from the inside of the pipe so excavation is not required.The concrete shell thickness is designed to withstand the existing loading to provide a true structural replacement to the CMP.Staff believes centrifugally cast concrete pipe is the best solution to repair this drain because it is expedient,cost effective and technically superior to the structural PVC liner in this application.Staff has received a firm quote from Sancon Engineering,the current lining and rehabilitation project contractor,of $350,750 to do the work and an additional $3,508 to provide a warranty bond.Staff recommends including the warranty bond.The work can be scheduled promptly,as Sancon is a certified installation contractor for AP/M Permaform,owner of the technology,and is already working in the City.This process would take about three weeks,but the drain will only need to be out of service for a day at a time and therefore can be scheduled around any predicted weather events. Sale Source The technology staff is recommending is a proprietary technology of AP/M Permaform who requires that a certified installation contractor be used.Sancon is the only certifiedC-2 installation contractor in the Southern California area.Therefore the City is limited to using Sancon if this technology is to be implemented.However,staff believes in comparison with other alternatives,this solution is the most cost effective and expedient while providing a superior finished product.Therefore,Staff is recommending that the City Council authorize the Mayor and the City Clerk to execute a sole sourced construction contract to Sancon Engineering,Inc.in the amount of $354,258 (Attachment A).Staff is also recommending approval of a $35,000 construction contingency (-10%)to address unforeseen conditions,for a total construction authorization of $389,258.The City Attorney has reviewed and approved the attached construction contract. FISCAL IMPACT Sufficient funds to complete this project at the recommended authorization amounts are available in the FY 2012-13 budget,inclusive of continuing appropriations,for the Water Quality /Flood Protection storm drain lining program . . Attachments:A Miraleste Canyon Storm Drain Structural Lining Project Construction Contract C-3 ATTACHMENT A CITY OF RANCHO PALOS VERDES PUBLIC WORKS AGREEMENT FOR STORM DRAIN REHABILITATION PROJECT -LINES 35,36 AND 37 THIS AGREEMENT ("Agreement")is made and entered this 16th day of October,2012,by and between the CITY OF RANCHO PALOS VERDES,a California municipal corporation ("City")and Sancon Engineering, Inc ("Contractor").Contractor's license number is 731797. In consideration of the mutual covenants hereinafter set forth,the parties hereto agree as follows: 1.Scope of Services.Contractor shall perform the work and provide all labor,materials,equipment and services in a good and workmanlike manner for the project identified as Storm Drain Rehabilitation Project -Lines 35,36 and 37 ("Project"),as described in this Agreement and in the Contractor's Proposal,which is attached hereto as Exhibit "A"and incorporated herein by this reference,inclUding miscellaneous appurtenant work.All work shall be performed in accordance with the latest edition of the Standard Specifications for Public Works Construction (commonly known as the "Greenbook"),prepared and promulgated by the Southern California Chapter of the American Public Works Association and the Associated General Contractors of California (collectively "Standard Specifications"),which is incorporated herein by this reference.In the event of any conflict between the terms of this Agreement and incorporated documents,the terms of this Agreement shall control. 2.Extra Work.Extra work,when ordered in writing by the Director of Public Works and accepted by the Contractor,shall be paid for under written work order in accordance with the terms therein provided.Payment for extra work will be made at the unit price or lump sum previously agreed upon in writing between the Contractor and the Director of Public Works.All extra work shall be adjusted daily upon report sheet furnished by the Contractor,prepared by the Director of Public Works,and signed by both parties,and said daily report shall be considered thereafter the true records of extra work done. 3.Effective Date.This Agreement is effective as of the date listed above,and shall remain in full force and effect until Contractor has rendered the services required by this Agreement. 4.Time.Time is of the essence in this Agreement. 5.Force Majeure.Neither the City nor Contractor shall be responsible for delays in performance under this Agreement due to causes beyond its control,including but not limited to acts of God, acts of the public enemy,acts of the Government,fires,floods or other casualty,epidemics, earthquakes,labor stoppages or slowdowns,freight embargoes,unusually severe weather,and supplier delays due to such causes.Neither economic nor market conditions nor the financial condition of either party shall be considered a cause to excuse delay pursuant to this Section. Each party shall notify the other promptly in writing of each such excusable delay,its cause and its expected delay,and shall upon request update such notice. 6.Compensation.In consideration of the services rendered hereunder,City shall pay Contractor a not to exceed amount of three hundred fifty-four thousand,two hundred and fifty-eight dollars and no cents ($354,258.00)in accordance with the prices as submitted in Exhibit "A,"including a bond. 7.Payments.City shall make payments within thirty (30)days after receipt of an undisputed and properly submitted payment request from Contractor.City shall return to Contractor any payment C-4 request determined not to be a proper payment request as soon as practicable,but not later than seven (7)days after receipt,and shall explain in writing the reasons why the payment request is not proper. A payment shall be made as the City Council of the City prescribes upon estimates approved by the City Council.However,progress payments shall not be made in excess of ninety-five percent (95%) of the percentage of actual work completed plus a like percentage of the value of material delivered on the ground or stored subject to,or under the control of,the City,and unused.The City shall withhold not less than five percent (5%)of the Agreement price until final completion and acceptance of the Project.However,at any time after fifty percent (50%)of the work has been completed,if the City Council of the City finds that satisfactory progress is being made,it may,at its discretion,make any of the remaining progress payments in full for actual work completed. 8.Substitute Security. a.At the written request and expense of Contractor,securities equivalent to any moneys withheld by the City to ensure performance under this Agreement shall be deposited with the City,or with a state or federally chartered bank in the State of California as the escrow agent,that shall then pay those moneys to Contractor.Upon satisfactory completion of the Agreement,the securities shall be returned to Contractor. b.Alternatively,Contractor may request that the City shall make payment of retentions earned directly to the escrow agent at the expense of Contractor.At the expense of Contractor,Contractor may direct the investment of the payments into securities,and Contractor shall receive the interest earned on the investments upon the same terms provided for securities deposited by Contractor.Upon satisfactory completion of the Agreement,Contractor shall receive from the escrow agent all securities,interest,and payments received by the escrow agent from the City,pursuant to the terms of this Section. c.Securities eligible for investment shall include those listed in California Government Code Section 16430,bank or savings and loan certificates of deposit,interest-bearing demand deposit accounts,standby letters of credit,or any other security to which Contractor and the City mutually agree in writing.Contractor shall be the beneficial owner of any securities substituted for moneys withheld and shall receive any interest thereon. d.If Contractor elects to receive interest on moneys withheld in retention by the City,it shall, at the request of any subcontractor performing more than five percent (5%)of Contractor's total bid,make that option available to the subcontractor regarding any moneys withheld in retention by Contractor from the subcontractor.Further mandatory details are provided in Public Contract Code Section 22300(d),which is incorporated herein by this reference. e.The escrow agreement for security deposits in lieu of retention shall be substantially similar to the form provided in Public Contract Code Section 22300(f),which is incorporated herein by this reference. 9.Taxes.Contractor shall calculate payment for all sales,unemployment,old age pension and other taxes imposed by local,State of California and federal law.These payments are included in the total amounts in Exhibit "A." 10.Audit.The City or its representative shall have the option of inspecting and/or auditing all records and other written materials used by Contractor in preparing its billings to the City as a condition precedent to any payment to Contractor.Contractor will promptly furnish documents requested by C-5 the City.Additionally,Contractor shall be subject to State Auditor examination and audit at the request of the City or as part of any audit of the City,for a period of three (3)years after final payment under this Agreement. 11.Unresolved Disputes.In the event that a dispute arises between the City and Contractor regarding whether the conditions materially differ,involve hazardous waste,or cause a decrease or increase in Contractor's cost of or time required for performance of any part of the work,Contractor shall not be excused from any scheduled completion date provided for by the Agreement,but shall proceed with all work to be performed under the Agreement.Contractor shall retain any and all rights provided that pertain to the resolution of disputes and protests between the parties.In the event of any dispute or controversy with the City over any matter whatsoever,Contractor shall not cause any delay or cessation in or of work,but shall proceed with the performance of the work in dispute.This includes disputed time extension requests and prices for changes.The disputed work will be categorized as an "unresolved dispute"and payment,if any,shall be as later determined by mutual agreement or a court of law.Contractor shall keep accurate,detailed records of all disputed work, claims and other disputed matters.Public Contract Code Sections 20104 et seq.and Rancho Palos Verdes Municipal Code chapter 3.24 ("Claims Against the City")shall govern the procedures of the claim process,and these provisions are incorporated herein bythrs reference. 12.Termination.This Agreement may be canceled by the City at any time with or without cause without penalty upon five (5)days'written notice.In the event of termination without fault of Contractor,City shall pay Contractor for all services satisfactorily rendered prior to date of termination,and such payment shall be in full satisfaction of all services rendered hereunder. 13.Incorporation by Reference.All of the following documents are attached hereto and incorporated herein by this reference:City of Rancho Palos Verdes Instructions for Execution of Instruments; Insurance Requirements for the City of Rancho Palos Verdes Public Works Contract;Noncollusion Affidavit;Workers'Compensation Certificate of Insurance;Indemnification and Hold Harmless Agreement and Waiver of Subrogation and Contribution;Additional Insured Endorsement (Comprehensive General Liability);Additional Insured Endorsement (Automobile Liability);and Additional Insured Endorsement (Excess Liability). 14.Antitrust Claims.In entering into this Agreement,Contractor offers and agrees to assign to the City all rights,title,and interest in and to all causes of action it may have under Section 4 of the Clayton Act (15 U.S.C.Sec.15)or under the Cartwright Act (Chapter 2 (commencing with Section 16700)of Part 2 of Division 7 of the California Business and Professions Code)arising from purchases of goods,services,or materials pursuant to the Agreement.This assignment shall be made and become effective at the time the City tenders final payment to Contractor without further acknowledgment by the parties. 15.Trenching and Excavations.If the project involves trenching more than four (4)feet deep, Contractor shall promptly and before the following conditions are disturbed notify the City in writing of any:material that Contractor believes may be material that is hazardous waste,as defined in California Health and Safety Code Section 25117,that is required to be removed to a Class I,Class II,or Class III disposal site in accordance with provisions of existing law;subsurface or latent physical conditions at the site differing from those indicated;or unknown physical conditions at the site of any unusual nature,different materially from those ordinarily encountered and generally recognized as inherent in work of the character provided for in the Agreement.The City shall promptly investigate the conditions,and if the City finds that the conditions do materially differ or do involve hazardous waste and cause a decrease or increase in Contractor's cost of or the time required for performance of any part of the work,the City shall issue a change order. C-6 16.Utilities.The City acknowledges its responsibilities under Government Code section 4215 and incorporates that section herein by this reference. 17.Location of Existing Elements.The methods used and costs involved to locate existing elements, points of connection and all construction methods are Contractor's sole responsibility.Accuracy of information furnished,as to existing conditions,is not guaranteed by the City.Contractor,at its sole expense,must make all investigations necessary to determine locations of existing elements,which may include,without limitation,contacting U.S.A.Alert and other private underground locating firm(s),utilizing specialized locating equipment and/or hand trenching. 18.Independent Contractor.Contractor is and shall at all times remain,as to the City,a wholly independent contractor.Neither the City nor any of its agents shall have control over the conduct of Contractor or any of the Contractor's employees,except as herein set forth,and Contractor is free to dispose of all portions of its time and activities which it is not obligated to devote to the City in such a manner and to such persons,firms,or corporations at the Contractor wishes except as expressly provided in this Agreement.Contractor shall have no power to incur any debt,obligation,or liability on behalf of the City,bind the City in any manner,or otherwise act on behalf of the City as an agent. Contractor shall not,at any time or in any manner,represent that itbr any of its agents,servants or employees,are in any manner agents,servants or employees of City.Contractor agrees to pay all required taxes on amounts paid to Contractor under this Agreement,and to indemnify and hold the City harmless from any and all taxes,assessments,penalties,and interest asserted against the City by reason of the independent contractor relationship created by this Agreement.Contractor shall fully comply with the workers'compensation law regarding Contractor and its employees.Contractor furtheragrees to indemnify and hold the City harmless from any failure of Contractor to comply with applicable workers'compensation laws.The City shall have the right to offset against the amount of any compensation due to Contractor under this Agreement any amount due to the City from Contractor as a result of its failure to promptly pay to the City any reimbursement or indemnification arising under this Section. 19.Prevailing Wages.City and Contractor acknowledge that this project is a public work to which prevailing wages apply.The Agreement to Comply with California Labor Law Requirements is attached hereto and incorporated herein by this reference.Eight hours of labor constitutes a legal day's work. 20.Workers'Compensation.California Labor Code Sections 1860 and 3700 provide that every contractor will be required to secure the payment of compensation to its employees.In accordance with the provisions of California Labor Code Section 1861,the Contractor hereby certifies as follows: "I am aware of the provisions of Section 3700 of the Labor Code which require every employer to be insured against liability for workers'compensation or to under take self- insurance in accordance with the provisions of that code,and I will comply with such provisions before commencing the performance of the work of this contract." 21.Subcontracting.Contractor shall adhere to all provisions of the Subletting and Subcontracting Fair Practices Act,Public Contract Code Section 4100 et seq.,which is incorporated herein by this reference. 22.Nondiscriminatory Employment.Contractor shall not unlawfully discriminate against any individual based on race,color,religion,nationality,gender,sex,sexual orientation,age or condition of disability.Contractor understands and agrees that it is bound by and will comply with the nondiscrimination mandates of all statutes and local ordinances and regulations. C-7 23.Debarred,Suspended or Ineligible Contractors.Contractor shall not be debarred throughout the duration of this Agreement.Contractor shall not perform work with debarred subcontractor pursuant to California Labor Code Section 1777.1 or 1777.7. 24.Compliance with Laws.Contractor shall comply with all applicable federal,state and local laws, ordinances,codes and regulations in force at the time Contractor performs pursuant to this Agreement. 25.Bonds.Contractor shall obtain faithful performance and payment bonds,each in an amount that is not less than the total compensation amount of this Agreement,and nothing in this Agreement shall be read to excuse this requirement.The required forms entitled Payment Bond (Labor and Materials)and Performance Bond are attached hereto and incorporated herein by this reference. 26.Contractor's Representations.Contractor represents,covenants and agrees that:a)Contractor is licensed,qualified,and capable of furnishing the labor,materials,and expertise necessary to perforlT!the services in accordance with the terms and conditions set forth in this Agreement;b) there are no obligations,commitments,or impediments of any kind that will limit or prevent its full performance under this Agreement;c)there is no litigation pending against Contractor,and Contractor is not the SUbject of any criminal investigation or proceeding;and d)to Contractor's actual knowledge,neither Contractor nor its personnel have been convicted of a felony. 27.Conflicts of Interest.Contractor agrees not to accept any employment or representation during the term of this Agreement or within twelve (12)months after completion of the work under this Agreement which is or may likely make Contractor "financially interested,"as provided in Government Code Section 1090 and 87100,in any decisions made by City on any matter in connection with which Contractor has been retained pursuant to this Agreement. 28.Third Party Claims.City shall have full authority to compromise or otherwise settle any claim relating to the Agreement at any time.City shall timely notify Contractor of the receipt of any third-party claim relating to the Agreement.City shall be entitled to recover its reasonable costs incurred in providing this notice. 29.Non-Assignability;Subcontracting.Contractor shall not assign or transfer any interest in this Agreement nor any part thereof,whether by assignment or novation,without the City's prior written consent.Any purported assignment without written consent shall be null,void,and of no effect,and Contractor shall hold harmless,defend and indemnify the City and its officers,officials,employees, agents and representatives with respect to any claim,demand or action arising from or relating to any unauthorized assignment. 30.Applicable Law.The validity,interpretation,and performance of this Agreement shall be controlled by and construed under the laws of the State of California,excluding California's choice of law rules. Venue for any such action relating to this Agreement shall be in the Los Angeles County Superior Court. 31.Attorneys'Fees.If any legal action or other proceeding,including action for declaratory relief,is brought for the enforcement of this Agreement or because of an alleged dispute,breach,default or misrepresentation in connection with this Agreement,the prevailing party shall be entitled to recover reasonable attorneys'fees,experts'fees,and other costs,in addition to any other reliefto which the party may be entitled. 32.Titles.The titles used in this Agreement are for convenience only and shall in no way define,limit or describe the scope or intent of this Agreement or any part of it. C-8 33.Authority.The person executing this Agreement on behalf of Contractor warrants and represents that he or she has the authority to execute this Agreement on behalf of Contractor and has the authority to bind Contractor to the performance of its obligations hereunder. 34.Entire Agreement.This Agreement,including any other documents incorporated herein by specific reference,represents the entire and integrated agreement between City and Contractor.This Agreement supersedes all prior oral or written negotiations,representations or agreements.This Agreement may not be modified or amended,nor any provision or breach waived,except in a writing signed by both parties which expressly refers to this Agreement. 35.Construction.In the event of any asserted ambiguity in,or dispute regarding the interpretation of any matter herein,the interpretation of this Agreement shall not be resolved by any rules of interpretation providing for interpretation against the party who causes the uncertainty to exist or against the party who drafted the Agreement or who drafted that portion of the Agreement. 36.Non-waiver of Terms,Rights and Remedies.Waiver by either party of anyone or more of the conditions of performance under this Agreement shall not be a waiver of any other condition of performance under this Agreement.In no event shall the making by the City of any payment to Contractor constitute or be construed as a waiver by the City of any breach of covenant,or any default which may then exist on the part of Contractor,and the making of any such payment by the City shall in no way impair or prejudice any right or remedy available to the City with regard to such breach or default. 37.Notice.Except as otherwise required by law,any notice or other communication authorized or required by this Agreement shall be in writing and shall be deemed received on (a)the day of delivery if delivered by hand or overnight courier service during Contractor's or City's regular business hours or (b)on the third business day following deposit in the United States mail,postage prepaid,to the addresses listed below,or at such other address as one party may notify the other: To CITY: Mr.Jim Hendrickson,Interim Director of Public Works City of Rancho Palos Verdes 30940 Hawthorne Blvd. Rancho Palos Verdes,CA 90275 To CONTRACTOR: The address listed in Exhibit "A" 38.Counterparts.This Agreement may be executed in counterpart originals,duplicate originals,or both,each of which is deemed to be an original for all purposes. 39.Severability.If any term or portion of this Agreement is held to be invalid,illegal,or otherwise unenforceable by a court of competent jurisdiction,the remaining provisions ofthis Agreement shall continue in full force and effect. IN WITNESS WHEREOF,the parties hereto have executed the within Agreement the day and year first above written. C-9 ATTEST: By:_ City Clerk Dated:_ CITY OF RANCHO PALOS VERDES By:_ Mayor APPROVED AS TO FORM: By:---=--:---:--_ City Attorney ("CONTRACTOR") By:--,,-_ Printed Name:_ Title:------ By:_ Printed Name:_ Title:_ C-10 Exhibit "A":Contractor's Proposal C-11 SANCON ENGINEERING,INC. GENERAL ENGINEERING CONTRACTOR STATE CONTRACTORS LICENSE #731797 BID #B12474 Tel:(714)891-2323 Fax:(714)891-2524 Date:September 12,2012 To:City of Rancho Palos Verdes Attention:Andy Winje Phone:310-544-5249 Email:andyw@rpv.com Project:Storm Drain Rehabilitation Project -Lines 35, 36,and 37 Owner I Agency:City of Rancho Palos Verdes Based on information furnished to Sancon plus a review of the job site,please find below our proposal to rehabilitate the (2)48"x 180'CMP storm drains and the 54"x 800'CMP storm drain utilizing Centripipe trench less pipeline rehabilitation technology.Centripipe is being offered as an alternative solution to the project specified CIPP as fully structural CIPP and non-structural invert paving were not feasible solutions for the rehabilitation of the above pipelines. Our proposal includes: •Confined Space Entry Procedures &Equipment •Standard insurance coverage up to $4 Million •Pre-video of sewer main just prior to lining to confirm and document immediate acceptability for lining. •Install Centripipe fully structural pipe liner at 2in average thickness •Install 54"Weko Joint Seals at (2)Separated RCP joints •Reconnection of active HC's within lined pipe. •Final video inspection to confirm successful Centripipe liner installation Assumptions I Notes: •Normal working hours M- F7 AM to 5PM •Water services generating waste water located within the Water Department property shall be shut off or discharges re-routed to prevent water from draining into the pipeline during our liner installation •Access to the upstream creek inlet on the 54"shall be coordinated by the City •Assumes work is performed during dry weather conditions •Performance Pipeline will perform cleaning and invert grouting where required per bid unit rates prior to our work This proposal excludes: •Excludes invert repair and pipeline cleaning (Separate bid item) •Excludes BMP's,Survey and Staking,Preparing As-builts,Lateral Bypassing •Excludes excavation type point repairs of any kind,if required,including pit construction /restoration. •Excludes restorations or,re-vegetation •Standby or work outside of our scope will be billed at $165.00 /man hour which is inclusive of equipment Price:$350,750.00 Lump Sum PRICE IS BASED ON ONE MOBILIZATION.ADDITIONAL MOBILIZATIONS BILLED AT:$4,950.00 EACH.BOND,IF REQUIRED,WOULD ADD 1%TO TOTAL BID PRICE.PRICE IS BASED ON RETENTION BEING WITHELD A MAXIMUM OF 90 DAYS AFTER COMPLETION OF OUR WORK.PRICE IS FIRM FOR A PERIOD OF THIRTY DAYS FROM RECEIPT.PAYMENT TERMS NET 30 DAYS OR PER CONTRACT. Respectfully Submitted, /t~- R?a{Helmuth Sancon Engineering,INC. B12474.doc Accepted By:_ Date:_ po:------- 5841 Engineer Drive Huntington Beach,CA 92649 C-12 SANCON ENG~NEER~NG,~NC~ GENERAL ENGINEERING CONTRACTOR STATE CONTRACTORS LICENSE #731797 Tel:(714)891-2323 Fax:(714)891-2524 812 C-13