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HomeMy WebLinkAbout1997-05-05 City CouncilCity of Palo Alto City Manager’s Rep }rt TO:HONORABLE CITY COUNCIL FROM:CITY MANAGER DEPARTMENT: Utilities AGENDA DATE: May 5, 1997 CMR:205:97 SUBJECT:Approval of Scope of Work for Consultant to Perform a Water Wells, Regional Storage and Distribution System Study. In July 1996, the Finance Committee selected the Water Wells, Regional Storage and Distribution System Study for review of the scope of consultant services. Staff requests Committee approval of the Scope of Work prior to issuance of a Request for Proposals. RECOMMENDATION Staff recommends that the Finance Committee approve the attached draft Request for Proposal for a consultant to perform an analysis of the capabilities of the City water wells, distribution system, water treatment processes and water system storage facilities. POLICY IMPLICATIONS Approval of this action does not represent achange to existing City policy. XE IVE Y Staffhas prepared a draft Request for Proposal for a consultant to provide a City Water Wells, Regional Storage and Distribution System Study. Previous water system studies were performed in 1957 and 1982. These studies were performed to provide capital improvement project guidance and to determine if the City water system facilities were compatible with the San Francisco Water Department’s Hetch-Hetehy water supply. The CMR:205:97 Page 1 of 4 .l overall study objectives will be to make recommendations for correcting existing water system deficiencies and to accommodate future development consistent with the City’s Comprehensive Plan. Recent changes in the operations and distribution of the regional water supply system (Heteh-Hetchy) may require the City to construct more storage and/or wells to meet the City’s water demand during regional water system emergencies. The attached draft Request for Proposals invites the Consultant to provide study management and administration, review current City water system records and operations, and evaluate the existing water distribution system capabilities and the current Water Fund Distribution Systems - System Improvement CIP, in relation to the study recommendations. The draft Request for Proposal also invites the consultant to perform ¯ the following tasks: evaluate future water distribution system demand and storage needs from existing records and make recommendations consistent with the City’s latest Comprehensive Plan; o reealibrate theexisting water distribution system model; add the upper foothills distribution system and reservoirs to the water system model; develop water system design factors consistent with the Comprehensive ~ Plan; o evaluate and propose CIP projects; o model capital improvements on the water system model; and perform a water distribution system audit to identify unaccounted for water losses from water purchasing records and water customer bills. In addition, the draft Request for Proposal invites the consultant to evaluate the need and cost for providing additional emergency storage and to develop a program to utilize existing system storage and emergency wells when the Heteh-Hetehy system is out of service. The consultant will be invited to evaluate the need for the City’s emergency well system and to determine the cost of conVert’rag the existing emergency well system into a standby wellsystem. A standby well system immediately responds to water distribution CMR:205:97 Page 2 of 4 system pressure drops whereas an emergency well system has to be manually activated and does not immediately respond to system pressure drops. Staff and the consultant will work with San Francisco Water. Department representatives to identify ’possible future Hetch-Hetchy system changes that may result from water supply and treatment studies the San Francisco Water Department is currently performing. These San Francisco Water Department studies may have an impact On how Palo Alto distributes and stores water for the City customers. The consultant will evaluate the need for and cost of water system improvements that may be necessary to accommodate San Francisco Water Department emergency water supply, treatment and operational changes. The consultant’s scope of work contains the following major tasks: 1.Study Management and Administration. Planning Considerations: includes a review of available water system background data to develop study planning characteristics. Distribution System: evaluation, water system model recalibration, development of water system design factors, modeling of recommended improvements on the recalibrated water model, and performing a water system audit. Reservoir Storage: evaluation of existing water system storage, emergency water storage needs and development of a program to incorporate the use of the foothills storage reservoirs into the daily water supply for lower elevation service areas. City Water Wells: evaluation of the need and cost to convert the current emergency well system to a standby well system. Evaluation of the number of wells needed, well capacity needed for an emergency or standby well system and provision of recommendations for future well operation and maintenance. CMR:205:97 Page 3 of 4 S L IMPACT Funds for the consultant study of the Water Wells, Regional Storage and Distribution System Study described in this report are available in the 1996-97 Water Distribution System-System Improvement CIP. ENVIRONMENTAL ASSESSMENT This study does not constitute a project under Califomia Environmental Quality Act (CEQA), and therefore no environmental assessment is required. Draft Request for Proposal for the Water Wells, Regional Storage and Distribution System Study. Prepared By: Charles Borg, Roger Cwiak and Larry Starr DEPARTMENT HEAD REVIEW: CITY MANAGER APPROVAL: CMR:205:97 Page 4 of 4 City of Palo Alto Utilities Department Request for Proposal For A Water Wells, Regional Storage and ¯ Distribution System Study Project Director: Roger Cwiak, WGW Engineering Manager Project Manager:-Charles Borg, WGW Senior Engineer Phone: (415) 329 - 2564 Proposals must be received by the Purchasing Department On or before 3 p.m. TBD And will be publicly ,opened on said day and hour in the Council Conference Room Civic Center 250 Hamilton Avenue Palo Alto, CA 94301 111. IV. V. Table of Contents Introduction ....................... Background ....................... A.Water Supply & Storage System .. B.Water Distribution System ....... Preliminary Scope. of Work ............ Proposal Content Requirements ........ Proposal Information ......... Reference Material ................... Exhibits ............................ Insurance Requirements ............... Water Fund Analysis .................. Page Number 3 3. 3 4 4 8 9 12 A-E F G Water Wells, City of Palo Alto Utilities Department Request for Proposal For A Regional Storage and Distribution System Study INTRODUCTION The City of Palo Alto is requesting proposals from qualified engineering consultants to conduct an engineering study of its water wells, regional storage and distribution system. A.OBJECTIVES OF THE STUDY: The objectives of the study will be to provide planning guidance for future water system wells, emergency water storage andwater distdbution system main extensions and replacements. This study will also provide guidance for maintenance and operation of the City’s emergency weft system, develop recommendations on weft water treatment that will meet the Department of Health Services’ requirements for emergency wells and develop. recommendations regarding, regional water storage and system storage requirements. The Consultant will study and calibrate the existing City water system model to demonstrate the recommended water, weft and storage system improvements. As part of the study, a water system audit will be performed to identify distribution system areas with large unaccounted for water losses. Capital improvement projects and budget recommendations will also be developed as part of this overall water system study. The study recommended projects will be consistent with the Comprehensive Plan and be recommended for Council approval in future C IPs. BACKGROUND Located 35 miles south of San Francisco, the City of Palo Altohas a population of approximately 58,100 inhabitants over a 26 square mile area. The municipally owned Utilities Department provides Water, Gas, Wastewater and Electric utilities within the city limits comprised of approx. 19,800 Water, 23,900 Gas, 21,600 Sewer, and 28,100 Electric utility services. HISTORICAL WATER SUPPLY & STORAGE SYSTEM The City of Palo Alto was originally dependent upon a local well system for water supply. However, as urban development accelerated, the need for an additional source of water was recognized. In 1962, routine operation of the well system was discontinued and Hetch-Hetchy became the main source of supply. The City presently maintains three existing wells for emergency water: Hale, Rinconada, Peers Park wells. Two other wells, Matadero and .Fernando, are in the system, but are currently out of service. The present Hetch-Hetchy water supply system being delivered to the City of Palo Alto comes from Sierra Mountains to the Bay Area at the Irvington Portal in Alameda County, where it is, transported through four San Francisco Bay Division Pipelines to its consumers, The City of Palo Alto has four service points connected to the San Francisco Pipelines. The City has eight (8) water service or"pressure zones." The City’s SCADA system telemeters system flows, pressures, and reservoir levels to the centrally located and controlled Utility Control Center (UCC) Building at the MSC onEast Bayshore Frontage Road. The water service connections from San Francisco Water Department are located within the boundaries of the City of Palo Alto and are known as Water Distribution Receiving Stations; California Abenue, Page Mill Road, and Arastradero Road Receiving Stations are located in under- ground vaults, while the Lytton Avenue Receiving Station is above ground. A typical receiving station consists of pumps, valves, meters, fluoride injection and SCADA-operated equipment. Included in the water storage system are six reservoirs, five of which are located above ground in the City of Palo Alto’s foothills (6.5 MG) andthe sixth located in the ground in College Terrace (4.0 MG). Each reservoir is filled by a booster station except the College Terrace reservoir which.is filled off the pressure head from the Hetch-Hetchy BayDivision Pipeline number three. A typical booster station consists of pumps, valves, pressure regulators and SCADA=operated equipment.: SEE attached Exhibits A, B, C, D, and E. !11. B WATER DISTRIBUTION SYSTEM page 5 of 12 The existing distribution system includes 223.7 miles of water mains. They range in diameter from 4 to 27 inches. Water main pipe materials consisting of cast iron, Polyvinyl chloride (PVC), transite (AC), and ductile-iron (DIP), although large diameter transmission mains are concrete cylinder-pipe (CCP), In general, the service lines from the distribution piping to the consumer are copper, while ..the valves and meters are bronze or brass. The average pressures within the water distribution system range from 50 to 100 psi. ~. SCOPE OF WORK The scope of work outlined below is the minimum necessary to satisfy the City’s OBJECTIVES OF THE STUDY. The consultant shall incorporate their engineering expertise and study experience into their proposal to meet the OBJECTIVES OF THE STUDY. The consultant will perform each of the following tasks .in a logical sequence. Each task will be considered completed when a formal task deliverable is accepted by the City: Task I- Project Management and .Administration. This task will include supervision of the project staffl invoicing and miscellaneous administrative expenses, taking accurate meeting minutes, distributing meeting minutes within two working days of the meeting, transportation, meals, possible lodging, and close coordination with the City of Palo Alto project staff. Using the scope of work and approved proposal, prepar.e a work plan with start and completion dates, manpower, resources required and the project budget detailed by task. Manage and coordinate project activities. Conduct meetings with City Staff when necessary and prepare a monthly Study status report. The monthly status report will ¯be delivered to the Project Manager by the second working day of the month following the report month. page 6 of Attend study progress meetings when City Staff or the consultant determines a study progress meeting is necessary. Prepare a preliminary and final report complete with multi-colored maps, diagrams, tables and text documenting the basic data, analyses, findings, and recommendations. The preliminary and final copies shall be ten (10) and twenty-five (25) copies respectively. The two (2) reports will be delivered to and reviewed by the City staff. Pertinent comments received will be incorporated into the =preliminary and final reports. All review comments will be responded to in writing by the Consultant prior to the final report printing. ~ Task 2- Planning Considerations~ This task shall include an inventory of background information and staff consultations to develop study planning characteristics. Review the City’s present and proposed Comprehensive Plan and previous water system-studies. Review the Comprehensive Plan to compare current and future land use (zoning) for consistency with the existing distribution system capabilities. Collect and review topographic maps: system maps and plans, operating records; data on system pressures and flows, and historical records of water purchases, production and use. 12 Schedule two meetings with Water Engineering and Operations Staff to discuss existing system operations and the current Water Utility five year CIP plan. Evaluate how the existing Water Utility CIP canbe incorporated into any Consultant CIP recommendations made as part of other tasks included in this study. Task 3- Distribution System. This task includes an evaluation of the capabilities of the City’s water distribution system to. meet current & future system water demands. Model Recalibration: We are currently utilizing Water Works to model the City’s water distribution system (program runs on ACAD. R12 for DOS, only). The model will be recalibrated to .accurately show the City’s water distribution system and the system’s ability to supply maximum day and hour demands. Also, the model will be extended from Park to Monte Bello Reservoirs to include the upper foothills water distribution system and reservoirs. page 7 of 12 Water System Desi_~n Factors: Develop water system design factors consistent with developable building square footage and future zoning for the planned land uses identified in the ¯ Comprehensive’Plan. These factors will be used to recalibrate the water model node demands for consistency with the City’s latest Comprehensive Plan. After a review of the Comprehensive Plan as the Plan relates to the water distribution and storage systems, the Consultant will meet with Water Engineering and ~Planning Department staff to discuss City planning criteria that is consistent with the Comprehensive Plan. The design factors will incorporate City maximum day plus ISO required fire flow. The design factors will be based upon the City’s most recent Comprehensive Plan, water usage records of the Palo Alto Water System and will be compared with the usage and trends of similar water systems in the Bay Area. Improvement Program: Provide computer model analysis of proposed system improvements and a detailed pipeline network analysis of the existing system. These hydraulic model simulation scenario studies will utilize, network analyses performed by the City’s computer model. A Capital Improvement Program will be evaluated, prepared and recommended for a five year CIP program. Improvements recommended over a .longer term than five years will be shown in the order the improvements should occur. The improvements will be identified as necessary to; (1.) overcome existing system deficiencies or (2) be consistent with the planned water supply needs of the City’s latest Comprehensive Plan. Water System Audit: Inspect theCity’s water system metering records, meter reading cycles and review metering operations. with City staff..The audit will pay special attention to changes in zoning, land use or changes in SFWD supply (changing form chlorine to chloramine) that could have an impact on the City’s water distribution system unaccounted for water losses. Analyze the ¯City’s Water Fund Analysis (Exhibit G) and make a list of possible causes for the unmetered loss % inthe monthly, cumulative and rolling average tabulations. The audit will identify (from City receiving station metering records and customer meter billings) the distribution system areas with large unaccounted for water losses, if they exisL The Citywill supply the customer water meter billings associated with each water receiving station meter. The consultant will make recommendations on possible page 8 ef 12 solutions to the unaccounted for water problems identified in the audit. Task 4= Reservoir Storage. This task will evaluate the need and cost of providing possible additional emergency storage for the existing water system and a program to utilize existing storage reservoirs and pump stations to supply water system demand when the San Francisco Water Department supply pipelines are out of service. Study the emergency storage reservoir requirements for the City’s water system. Take into consideration existing storage, and standby wells sources to supplement water supplies in an emergency.- Evaluate the need and cost of any additional emergency water storage recommendations based on. the above information, Title 22 of the California Administrative Code and discussions with San Francis Water Department and City Staff. Make recommendations regarding the daily use of the foothills storage reservoirs for daily water supply in service areas 1, 2,3 & 4. Evaluate the need and cost of any recommended distribution systemCIP projects which may be necessary to accomplish the use of the foothills storage reservoirs for daily water supply in service areas 1, 2, 3 & 4 due to changes in the operations and distribution of the San Francisco Hetch-Hetchy regional water supply. If additional storage is recommended to meet the present and future water demands consistentwith the Comprehensive Plan, determine the amount, cost, and location of the additional storage the City of Palo Alto will require. Consult with SFVVD and determine if the City’s present water distribution system, wells and storage reservoirs will be impacted by changes in the operations and distribution of regional water supply system (Hetch-Hetchy). Evaluate the need for and cost of possible water distribution operational changes or capital improvements, that may be required by SFWD’s current studies on chloramine use and their study of regional emergency water supply/storage issues. Task 5- City Water Wells. This task will evaluate the need for and cost of converting the City’s Emergency Water Well System into a standby well system. The consultant will also provide guidance for the page 9 of 12 maintenance and operation of the City’s emergency well system and, if necessary, develop recommendations on well water treatment that will meet the Department of Health Services requirements for standby wells. Inspect the City’s existing emergency well water production :facilities. Evaluate the needed production capacity for the City’s current emergencywells. Within sixty days of signing an Agreement with the City, evaluate the Water Utility’s need for a new production emergency/standby well at the Middlefield Road well site and submit a written evaluation to the Project Manager stating the reasons for the Middlefield Road well site recommendation. -~ Evaluate the need for and cost of converting the current City emergency well system to a standby well system. Consider the City’s current water storage capacity (10.5 MG ), the City’s operational ability to move water from the foothills to lower service ’ areas and emergency well production capacity. Provide recommendationsfor the maintenance and operation of the City’s emergency wall system.. Prepare written maintenance guidelines and schedules for the Operations Section future use. Evaluate the need for and cost of any CIP recommendations to convert the City’s emergency wells into standby wells. Develop. recommendations on well water treatment that will meet State Department of Health Services water quality requirements for standby wells with an economic analysis of water production .costs. Evaluate the need and cost of any additional recommended wells necessary to supplement .the City’s emergency water storage and supply system. Evaluate the feasibility of eliminating any of the City’s existing wells or well sites without sacrificing City emergency water supply readiness. Evaluate the need and cost of maintaining the Matadero and Fernando well .sites in the City’s emergency well system or make a recommendation to abandon these wells. IV.PROPOSAL CONTENT REQUIREMENTS page 10 of 12 PROJECTAPPROACH List the staff of the project team to be utilized on this study, . together with their qualifications and past experience in water distribution system design, water receiving station design, water reservoir design and operations, well design and operation, instrumentation, control and telemetry system operation. Identify the key person responsible for the quality and progress of the study. Include a list of sub- consultants and/or subcontractors expected to be engaged in the wo~:k. D= Provide a detailed proposal and sequence ofwork to be performed. Include additional tasks which may be necessary based on your firm’s engineering experience with this type of Water System Study. Describe in detail your.planned;involvement of City Staff. SCHEDULE Provide a progress schedule with estimated dates for completion of tasks and prepare for submission a list of deliverables for each task identified in your proposal. Your proposal will be included in the negotiated scope of work for the final consultant agreement. EXHIBITS Provide examples of ClP recommendations, reports, graphics and maps used in similar studies written by members of the proposed study team. COST Provide a breakdown of study cost by task deliverables. Payments will be made .upon acceptance of deliverables. DECLARATION OF NON-AFFILIATION page 11 of 12 Include a declaration of non-affiliation under penalty of perjury certifying that the consultant is not affiliated with nor has any financial interest, in. any manufacturer, distributor,. supplier or other company connected with consultant’s recommendation and/or installation of any products or services as required by the Utilities Department. PROPOSAL INFORMATION The City of Palo Alto’s Utilities Department Principal Contact is: Charles Borg, Senior Engineer WGW, Project Manager (415) 329.2564. Su.~p0rt Team: Romel Antonio, WGW Engineer (415) 329-2462. INCURRING COSTS The City is not liable for any cost incurred by a consultant responding to this Request for Proposal (RFP). C.SUBMITTAL PROCEDURE All questions regarding procedures to be followed in the submission of a response to this RFP should be directed to: Howard Edwards Manager of Purchasing and Contract Administration 250 Hamilton Avenue P.O. Box 10250 Palo Alto, CA 94301 (415) 329-2319 Fax." (415) 329=2468 D.INSURANCE Consultant selected for the study must provide the City with evidence of insurance coverage acceptable to the City’s page 12 of Risk Manager including casualty, professional liability, naming the. City as additionally insured, and workers’ compensation insurance. See Exhibit F for insurance requirements. 12 ACCEPTANCE OR REJECTION AND NEGOTIATION OF PROPOSALS The City reserves the right to accept or reject any or all proposals. After a consultant is selected by the City, the contents of the submitted proposal will become a contractual obligation. Failure of the consultant to agree to include the ¯ proposal as part of the contractual agreement may result in cancellation of the award. The City reserves the right to negotiate modifications to or accept any part of the proposal and will not be obligated in any way to accept those parts that do not meet with the approval of the City. Other terms and conditions of the contract will be negotiated at the time of consultant selection and will be subject to City Council approval. NON-DISCRIMINATION AND AFFIRMATIVE ACTION Consultant shall comply with the City’s requirements and policies with respect to Non-discrimination and Affirmative Action. RESPONSE SUBMISSION Eight copies of each proposal are required. All proposals must be sealed in a package showing the following information on the outside and addressed to: Howard Edwards, Manager of Purchasing and Contract Administration, City of Palo Alto, P.O. Box 10250, Palo Alto, -CA 94301 Consultant’s name and address Attention: Water Wells, Regional Storage and Distribution System Study. .page 13 of 12 The proposal package must be mailed or delivered to the above address prior to the deadline for receipt of proposals. Consultants mailing or shipping their proposals must allow sufficient delivery time to ensure receipt of their proposals by the time specified. Late .oroposals wil! not be accepted. DEADLINE FOR RECEIPT OF PROPOSALS All proposals must be received by the Director of Purchasing by 3 P.M. on (TBD). SELECTION CRITERIA All proposals will be evaluated against the following criteria: The experience of .the firm and the project team to perform the Water Wells, Regional Storage and .Water Distribution System Study. Record of similar work performed for Cities and/or other agencies together with names and phone numbers of agency contacts. 3. Project approach. Completeness of response to the R.F,P, The proposed fee relative to the services to be ¯ provided~ Based on the above criteria, a certain number of consultants will be selected to make an oral presentations. The City will schedule the time and location in Pal, Alto for each oralpresentation. Recordings may be made by the City of all oral presentations for further study and analysis. CITY OF PALO ALTO RFP for Water Wells, Regional Storage and Distribution System Study Reference Material Available page 14 of 12 Study of Water System Improvements James Montgomery, July 1983 Study of Water System Improvements Brown and Caldwell, 1963 Study of Water System Improvements BROWN AND Caldwell, February 1957 Water Well System City of Palo Alto, January 1988 Water Intec~ratedPlan 1985~1995 City of Palo Alto, February 1986 Water Distribution Map .Synex Systems’ Water Works Water Distribution Hydraulic Model (ACAD. R12 for DOS) "l~hese Engineering Studies including improvement Plans of said facilities are available for review. City staff will not reproduce nor allow this information to leave the premises. To review available information, Please contact Charles Borg, Project Manager at 415=329-2564. l© PALO ALTO SERVICE AREA Exhibit WATER SERVICE PRESSURES IIBII ¯EXAM P~[ 14SS*,Rellrveir Elovllloe (PARK)wlO00 Hovel [levelloo ~Hood X,433 ISGS13G5 ¯ SAN F~ANCI|¢O ’WATER’HARDNESS WINTER Io1~E GRAINS, PER GAI.~.ON 8UIdUER ~’~.~1 GRAINS PER GA~,ON WATER SERVICE PRESSURES CONTOUR MAP Exhibit "C" ~ MONTE BELI.O :BY - BAILEYRESERVOIRGA - GOLDEN ANDERSON CL - CLAYVAL N.C.- NORMALLY CLOSED N.O.- NORMALLY OPEN DANL ~s~~ ~ OAHL REEERVO,R ~PARK RESERVOIR R~SE~VOIR BORONDA BOOSTER_~.CORT~ MADE~A ORTE MADERA .... ~ PAGE MILL ~CONNECTION MAYFIELD RESERVOIR 20" 8~ATIOH QA ~ HILLVIEWAND ~MP STATION ZONE ~ 8"BY I~GA ¯o zo.e ~ PALO ALTO WATER SYSTEN Exhibit "D" Exhibit "E" 1128 1188=12 1177-12CI PALO ALTO 11BO-6 CI 1SHP 1184-12CI 3001 3001-12C! 3002 WATER STATION | .LYTTON CONNECTION City of Polo Alto insurance Requirements tar Contractors CONTRACTOR CONTRACT (.~O-ORDINATOR CONTRACT DESCRIPTION GENERAL TERMS AND INSTRUCTIONS oO CONTRACTORS TO THE CITY OF PALO’ALTO, AT THEIR SOLE EXPENSE, SHALL OBTAIN AND N1AINTAIN INSURANCE FOR THE TERM OF THE CONTRACT. CONTRACTORS WILL E~E REQUIRED TO PROVIDE A CERTIFICATE EVIDENCING THE INSURANCE AND NA~IlNG THE CITY AS AN ADDITIONAL INSURED. THE CERTIFICATE OF INSURANCE MUST BE COMPLETED AND EXECUTED BY AN AUTHORIZED REPF~ESENTATIVE OF THE COMPANY PROVIDING INSURA.NCE, FILED WITH THE CITY, AND APPROVED BY THE CITY’S RISK MANAG=..R BEFORE THE CONTRACT WILL -BE CONSIDERED COMPLETE AS RESPECTS INSURANCE. . THIS INSTRUCTION SHEET SHOULD BE GIVEN TO YOUR INSURANCE AGENT/BROKER WITH THE REQUIRED CERTIFICATE FQRM. RETURN THE COMPLETED CERTIFICATE TO THE CITY OF PALO ALTO CONTRACTING DEPARTMENT. THE INSURANCE cOVERAGES CHECKED BELOW ARE REQUIRED FOR THIS CONTRACT. T~PE OF COVERAGE ~"WDRKER’S COMPBNSATION . "~J" COMPREHENSIVE GENERAL LIABILITY INCLUDING; PERSONAL INJURY BROAD FORM PROPER~ DAMAGE B~NKET CONTinUAL FIRE LEGAL LIABIL~ ~COMPREHENSIVE AU~MOBILE LIABIL~Y INC~DING: HIRED NON,NED ~ PROFESSIONAL LIABILI~ INVADING: ERRORS ANO OMISSIONS ALL OAMAGES MALP~CE (IF APPLI~BL~NEGLIGENT PERFORMANCE ~THE CITY OF PALO ~LTO IS TO BE NAMEO AS AN AOO~TIONAL tNSUREO ~NO INSURANCE CE~IR~TE REGUIRED STATUTORY BODILY INJURY PROPERTY DAMAGE LONG FORM [~] SHORT FORM MiNIMuM LIMITS OF LIABILITY $ _500,~00 SO0.OOO .... ~600~00 S~O,OOC BODILY INJURY & PROPERTY DAMAGE COMBINED. BODILY INJURY’ (EACH PERSON)$ . . BODILY IN.JURY (Each Occurrence)S " "’ PROPERTY DAMAGE $. ’. ~ ~.. BODILY INJURY & PROPERTY DAMAGE COMBINED $’ ~ s ’""’s~o,0oo ~soo,ooo 8oo,0oo S00,000 ~%.S00,000 $.~oo,000 A.The City of Paid Alto, its officers, agents a~d employees are named as ~dditional insured, but only as to work pe~crmed under’contract. Said coverage as to the City of Paid Alto, etc., shall be primary coverage, without offset against City’s existing insurance and any other insurance carried by the Citybeing excess insurance only. B.Where the work involves grading, paving, excavating, drilling, or other under~round work, the policy includes destruclion of wires, conduits, pipes, mains,or other similar property or any apparatus in connection.therewith be!ow the surface of the ground whether owned by third parties of the City of PalQ Alto. C. Where the work involves excavating, collapse coverage is provided in the amounts ~bove. D. The policy Includes a °’Severability of Interest" provision. E. Deductibles over $5,000,000 must be indicated and are subject to approval. F, If such policies are cancelled or changed during the period of coverage ~s stated herein in such a manner as to a,",ect this Certificate, lhirty (30) days written notice will be mailed to the City of Paid Alto, Risk Manager, RO. Box 10250, Paid Alto, California 94303. G. The liability Insurance policy includes a contractual liability endorseme~nt providing insurance coverage for ont~a¢’,cr’s agreement to indemnify the City. H. The coverage afforded under the policies is subiect to all the terms of the policies designated herein and meets all the provisions called for herein, Exh.ibit "G"