Loading...
HomeMy WebLinkAboutLEIGHTON-YEN AND ASSOCIATES - 1973-05-21t AGREEMENTFOR GEOLOGIC AND SEISMIC SAFETY STUDY THIS AGREEMENT, made on the Az _day of 1973 b and between the CITY OF HUNTINGTON BEACH, a municipal oration Y P P (hereinafter referred to as CITY), and LRIGI-ITON-YEN $ ASSOCIATES, a California Corporation (hereinafter referred to as CONSULTANT): W I T N E S S E T H: WHEREAS, CITY has determined that the public interest requires a geologic and seismic safety study upon which to buse the City's General Plan; and WHEREAS, CITY has determined the public interest requires the land use, conservation, open space, and seismic sa:-ety elements (among other) of the General Plan be firmly, based on soun(I geologic, soils, and seismic data analyses; and WHEREAS, CONSULTANT is qualified to undertake and complete such analyses and is willing to undertake the same; NOW, THEREFORE, the CITY and CONSULTANT in consideration of the mutual convenants and agreements hereinafter contained, do hereby agree, each with the other, as follows:- I. OBJECTIVES The objectives of the study shall hereinafter be described as four principal areas of resoarch concentration., including the identifi- cation and analyses of Lclglitoii•Ycn &Associates, Inc. dog 1. The distribution and character of local geologic, soils, and seismic conditions, including the structure of local geologic formations, the location and character of recent and active faults, and surficial con- ditions such as landslide areas, areas susceptible to erosion, and areas containing expansive/collapsible soils. 2. The area's relative susceptibility to seismic hazards due to the proximity of recent and active faults, the likelihood of major -earthquakes, and the probable maximum magnitude of such act-1 3. The relative susceptibility of specific -localized areas to seismic hazards, including their potential susceptibility to surface ruptures from faulting, to ground shaking, and to soil liquefaction. 4. fine distribution, and character of local geologic, sills, and seismic conditions in relation to the development and/or use of land throughout the community. Specific criteria shall be developed by which to assess and regulate the type, design and location of buildings and land uses within various geo-physical areas of the City. II. SCOPE: OF STUDY The work to be done by CONSULTANT in this study is set out in Exhibit "A", attached hereto and by this reference made a part hereof. III. STUDY AREA The study area will be defined as all lands lying within the corporate Limits of the City, and the portion of County lands known as Bolsa Chica Lagoon. The study area is shown on the attached maps, Fig. 1. IV. CONSULTANT agrees to c�.nmence work on the project within ten (10)days following the execution of this Agreement, and to diligently continue the same to completion. All work to be done by CONSULTANT under this agreement shall be completed within a. period of .four months following -2- LeiglitonYen & Associates, Inc. AOL execution unless mutually agreed changes are made. CONSULTANT further agrees to provide twenty(20) copies of a non -technic s °summary report, five (9) copies of a technical report, containing all findings, analyses, and recommendations (both in written and graphic form) of the work as outlined by Exhibit "A"`- Scope of Study, and reproducible masters for both reports. CONSULTANT further agrees to provide oral public presentations on said report to CITY'S Planning Commission and City Council at such timks and in such number's as CITY'S representative deems appropriate. Said oral presentations shall not exceed a total of three �3) in number. CITY agrees to notify consultant of the time and place of said oral presentations at least ten (10) days prior to the date on which the ,presentations are to take place. Beyond these oral public presentations, CONSULTANT will meet regularly with authorized representatives of the Planning Department staff in order to facilitate coordination and to dutifully carry out the study _. to completion. V. BILLING AND PAYMENT For furnishing the services specified under Exhibit "A" of this Agreement, CITY agrees to pay CONSULTANT the sum of Seven 'Thousand � Five Hundred Dollars ($7,500.00). partial payments for work performed under this Agreement shall be made on a calendar month basis and at monthly intervals during the progress of this work. Each partial payment shall be made within ten (10) days after presentation to the City of a statement setting forth in detail the work performed and all costs incurred by CONSULTANT, together :with supporting vouchers for the period covered by -3- Lciglaon•Ycn & Associatcs, Inc, each said statement, up to and including the total sum of Four Thousand - Dollars Dollars ($4,000.00). The balance of Three Thousand Five Hundred/($3,500,)0) shall be paid to CONSULTANT within thirty (30) days of submission and st - factory completion of the final report. The totalamount of Seven ThousandFiveHundred Dollars ($7,500.00) shall include all costs incurred by CONSULTANT for salary and out-of-pocket costs for travel and miscellaneous expenses necessary to perform the Scope of Services specified under Exhibit "A" of this agreement. Any specific additional assignments, salary expenses, authorized travel and appearances not provided for in the scope of services set forth.under Exhibit "A" must be approved by CITY; payment for said approved and designated additional Mork and 1 imbursable expenses shall tie made on a calendar month basis at monthly intervals, on the basis of the Professional Staff Fee Schedule, July 1, 1972, marked Exhibit "B" and attached hereto and by reference made a part hereof, and each payment shall be made within ten (10) days after presentation to CITY of a statement setting forth in detail the additional work performed and all costs incurred by CONSULTANT, together with supporting vouchers, for the period covered by each said statement. VI. DESIGNATION OF AUTHORIZED REPRESENTATIVES CONSULTANT hereby agrees, upon the signing of this Agreement,, to furnish the City in writing the name of an individual who will be authorized to act in person or through his designee for CONSULTANT in all matters pertaining to the study. Such individual shall be approved by the CITY'S Planning Director: -4, Leig:oton-Yen & Associates, Inc. CITY agrees, upon signing of this Agreement, to furnish CONSULTANT the name of an individual who, as the CITY'S Project P asen- tative, will be authorized to act in person or through his designee as representative for the CITY in all matters pertaining to this study. It is aderstood and agreed by said parties that the authorized representatives may be changed, provided either party to this Agreement so desiring the change give at least five (5) days' prior notice in writing to the other, naming its new authorized representative, and th4t CONSULTANT'`s said representative shall be acceptable to the CITY.' VII. COOPERATION All departments of the CITY will assist CONSULTANT in the performance of this study, and CONSULTANT agrees to provide general guidance and direction to CITY personnel that are to assist CONSULTANT in the collec- tion of data and the preparation of said reports. CITY shall provide letters of introduction of CONSULTANT to such other persons, firms, or governmental entities as necessary to assist CONSULTANT in obtaining required data. The use of CITY records and personnel by CONSULTANT shall be coordinated through the CITY's representative. VIII. OWNERSHIP OF REPORTS AND DATA All reports, exhibits,., data, and other work or materials prepared in compliance with this Agreement shall be and remain the property of the CITY, to be used by CITY as may be required. IX.' CHANGES IN WORK CITY may, at any time, by written request of the CITY's Project Representative, make any minor changes in the services to be provided -S- Leighton-Yen &Associates, Inc, hereunder and act an additional cost not to exceed One Thousand Yiolla..rs ($1,000.00). If such changes cause any increase in the cost of doing the work ,under this Agreement or in the time required for its performance, an adjustment as mutually agreed upon will be made by CONSULTANT and the CITY, and the Agreement shall be modified in iTriting accordingly. Any claim for adjustment under this article must be made in writing to the CITY's Project Representative within ten (10) days from the date the change is requested. - X. TERMINATION This agreement is subject to termination by the CITY at any time upon serving written notice to CONSULTANT, and the CITY shall there- after be liable to CONSULTANT only for fees and costs accrued to the date of receipt by CONSULTANT of such notice. XI. NOTICES All notices to CONSULTANT under this Agreement shall be deemed valid and effective upon deposit in the United States Mail, postage prepaid, by certified and/or registered mail, addressed to Leighton -Yen Associates, 300 South Beach Boulevard, La Habra, California 90631. All notices to the CITY under this Agreement shall be deemed valid and effective when personall, served upon the Planning Director or upon deposit in the United States Mail, postage prepaid, by certified and/or registered mail, addressed to the Planning Director, City of Huntington Beach, P.O. Box 190, Huntington Beach, California 92648 X11. GENERAL PROVISIONS In this Agreement, whenever the context so requires, the masculine gender includes the feminine and/or neuter and the singular- 6_ Leighton•Yen &'Associates, Itic. 9 ` IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be -'executed on the date first 'written .above. d CITY OF HUNTINGTON BEACH, a municipal corporation Dated: Z / 7 3 By , Mayor ATTEST: ,r City C1ek CITY PPROVED AS TO 0}2h1: ty Attorney Dated: A-1a ZZ, 1.9 73 By; President By: Secretary CONSULTANT Leighton -Yen &Associates, Inc: 2_ :A • Exhibit B, July 1, 102 PROFESSIONAL STAFF FEE SCHEDULE Soil and Rock Engineering- Chief. Engineer (Bing C. Yen) $ 32.00/hr. Principal. Engineer 26.50/hr. Project Engineer 22.00/hr. Laboratory;Specialist 20.00/hr. Staff Engineer 18.00/hr. Field Technician 14.00/hr. Draftsman 13.00/hr. Geology ChiefGeologist (F. Beach Leighton) $ 32.00/hi. Senior Geologist 26.50/hr. Project Geologist 22.00/hr. Staff Geologist 18.00/hr. Geologic Technician 14.00/hr. Geologic Draftsman 13.00/hr. Leighton Yen & Associates♦ Inc. 1 STUDY AREA LIMITS HUNTINGTON BEACH GEOLOGIC AND SEISMIC SAFETY STUDY ,r?otitirn�uor , � _ �- Y•M. � A�.E N to P ON? S� fy Di a� x tJ �--- �( •a 5GAI�OC7'! \ 1y7—\I I. 6 PSLN UPOVG NiA 4 6 4 1 t �V' -r4 `Yw, PISII 1 -U.S. NAVAL i�ti �.t0 ic--2 1 1V rld o M Tr l ..Y. CSTNIV rTEn. J�1ApJrw9,�+ v istmiuster �) r lfprlllp . tStH(VS't. "I EL 4E - IJAU j 4 ,ti•"�: t (J „ I I L ,4•r� S!\/J�idtvuy I 'Bolsa J cIt[•y'.�� .. GOLDfY tSt i Ctty '9.1A09E' Senl / srArloN_ l�l[LA0 I:rC&Ch IC,) `� IOINGCp N I `i I- r, 119 MAI.; t41u,T� Z\` Lt K f �Nt71 JI Ft A '/ l Stncise I > I` e r1coft S111o1�E� SurfslCiC�' VfW4ll1[ D r I ,tHC11'[ML MIS ALW it S'tnrs urUlCLAIn,A.V w i, QI ,� 9 AIfSA v SO, •.NutiiSI +7 _ coon ACII � CL VNIM.TSo921MCLUAit0�`'ti'�-; •, Ayl ,'•. i Y 5G'nA Huntingtori`,'�� , � NTE Co., f.) ATfAA +v[ �l•_. Beach y ! ul 1 `e . i NANIITCIN IrfA ♦tt AVE b! 19 34, sr,� �pti � •�' � srACNAn AICAAIM0 N rpor Ih. Figurel Leighton -Yen & Associates, Inc. APPENDIX E EXHIBIT A SCOPE OF STUDY CITY OF HUNTINGTON BEACH GEOLOGIC AND SEISMIC SAFETY STUDY THE STUDY The study shall consist of four pri.ncipah tasks: 1. The collection and compilation of existing geologic, soils, and seismic data. 2. An assessment of existing '.Lta and specific factors for further study. 3. The study and analysis of high -priority geologic, soils, and seismic factors. 4. The development and review of specific criteria as related to land use planning, Task I. Collection and Compilation of Existing Data Activities under this initial task shall consist of those efforts required to gather and compile all available data on the geologics soils, and seismic conditions of the Huntington Beach area. This data shall include, but not be limited to, information related to the following geologic, soils, and seismic a5perts: 1. local geologic formations 2. expansive/collapsible soils 3. slope stability 4. mineral resource depletion S. land subsidence 6. earthquakes 7. fault rupture 8. tsunami Leighton -Yen & Associates, Inc. Data to be gathered by the City staff will include aerial photographs, topo- graphic maps and geologic maps and reports of the Huntington Beach area from City files, The Consultant shall review all available'existing literature and data from other sources and gather such information as may be obtainable to complete the data base. Infoni-tion gathered from all sources shall be compiled in such a form as to be, readily available for future use by both the Consultant and City staff. Task II. Assessment of Ex� Data a d under Task I it is antici- pated or. review of the existing available data there n I. p g g that several geologic, soils and seismic factors will be identified that reuire further study. The Consultant shall identify these factors, and in cooperation with the City staff, assign priority rankings to each factor. The Consultant shall also develop and submit to the City staff, a phasing program for the continuance of such studies as determip,ed to be beyond the present study scope. Task III. Study and Analysis of High -Priority Factors It is presently anticipated that the following geotechnical factors or conditions will require further study beyond the level of information provided from Task I. As a part of the Scope of Study, these would include: 1. Seismic conditions --'the relative susceptibility of all areas to seismic hazards, including surface ruptures from faulting, to ground motions, and to soil liquefaction. 2. Ground F osidence - resulting from future withdrawal of petroleum from underground.Leservoirs. 3. Expansive soils - the pi,-esence of expansive,soils which impose special requirements or future constr-faction. y Leighton -Yen & Associams, Inc, Task IV. Development"of Criteria for Land. Use Planning From the va-s.ous geologic, soils and seismic data and factors studied under the previous tasks, the Consultant shall develop and recommend specific criteria by which to assess the type, design and location of buildings and land uses within various geo-physical areas of the City. These criteria will be designed to allow the land use planner, as well as the civil or structural engineer to assess the relative impact of geologic, soils and seismic conditions on development throughout the City and to effect various trade-off options.. In order that effective use can be made of the geologic, soils and seismic zP f stud the data that is to be gathered. and an:��y.,.„fl during the course o the y, following conditons should be met. 1. The data should be presented in such a form as can be readily interpreted and used by study groups carrying out investigations of other elements of the General Plan. 2. The data should be presented in a manner which is readily under- standable by non -technical persons. 3 The data should be in a form which allows continual upgrading as more information becomes available in the future. 4. The methodology for upgrading data banks should be presented in sufficient detail to allow eventual turnover to City staff. S. The geologic, soils and seismi-z study should develop guidelines for further study, not only by public agencies, but more importantly, studies which become a routine requirement of private developers. 6. The geologic, soils and seismic study should make full use of current sate -of -the -art techniques Leighton -Yen`& Associates, Inc, Data developed during the course of the study shall be presented in both map and report fo7:m. All maps shall be in a form suitable for the addition of future information. The a ;ty shall furnish the Consultant with abase topo- graphic map of a scale of 1P1 = 800' from which to develop the maps. The report will interpret and present data used in the development of the maps; a discussion of the potential impact of the information contained on the maps, ff and the Consultants recommendations regarding future studies. I The maps to be included are as follows: 1. Geologic Map This map will present the distribution of geologic units within the study area, the structural character and com- posit4'-n of the formations, and other basic geologic and engineering properties of each unit. Developed primarily from existing data, this map will form one of the data bases from which other maps may be developed. 2. Expansive/Collapsible Soils Map - The Consultant will present in this map existing and potential areas containing expansive soilsandcollapsible soil sets, as well as a rating of the expansion potential of the former ?materials 3. Active Fault Map - This map shall identify the location of recent and active faults throughout the study area, and in particular the Newport -Inglewood Fault which passes through the corporate Limits of the City. The Consultant will ascertain the surface traces of this fault, determine whether movement has taken place along these traces, and will present zones of movement or potential movement in relation to faults'. Leighton -Yen &.Associates, Inc. i 4. Map of Areas Subject to Soil Liquefaction - If a major_ earthquake were to occur on the Newport -Inglewood Fault, it is conceivable that certain near -shore areas might undergo liquefaction, or a momentary loss of strength. The Consultant will define such r;tential lique- faction zones through the use of a dynamic -stress computer ara?ysis, using representative soil profiles of the various local, near -shore conditions. S. Ground Response Spectra Zone Map - The Consultant will develoij sm3 delineate upon this map various response -spectrum zones ut:LI-iZi.r,z a dynamic -stress computer program, at the same time the soA]. lique_ faction studies are being carried out. By developing and utilizing estimated ground motion characteristics, the Consultant will determine the characteristic response spectrum at the sur;',ace of sites or areas throughout the City. An analysis and recommendations will be made ry the Consultant as to the type, design and location of buildings and land uses within each area designated on the map. The City staff, insofar as practical, will provide the Consultant with assistance in drafting services, report reproduction, and other allied services. PERFORMANCE Performance time on the study shall be four months. Regular meetings with the Planning Department will be scheduled as necessary. A minimum of three presen- tations to the Planning Commission and City Council will be required. Leighton -Yen & Associates, Inc. RESOLUTLON N0. RESOLUTION OF THE CITY COUNCIL OF THE CITY HUNTINGTON BEACH AUTHORIZING THE MAYOR AND Gj_TY CLERK TO EXECUTE AGREEMENT FOR GEOLOGIC AND SEISMIC SAFETY STUDY The City Council of the City of Huntington Beach does hereby resolve as follows: That the Agreement for Geologic and Seismic Safety Study, by and between the City of Huntington Beach, a municipal corporation and Woodward -McNeill & Associates, a California corporation, dated February 20, 1973, a copy of which is marked "Exhibit A", attached hereto and made apart hereof, is hereby approved. That the Mayor and City Clerk oftheCity of _iuntington Beach are hereby authorized and directed to execute the Agree- ment for Geologic and Seismic Safety Study. PASSED AND ADOPTED by the City Council of the City of Huntington Beach at a regularmeeting thereof held on the 20th day of February, 1973. Mayor ATTEST: APPROVED AS TO FORM: City Clerk Cit?oAttd4_A��32_ \ A j Res. No. STATE OF CALIMANIA COUNTY OF ORANGE ) ) ss: CITY OF HUNTINGTON BEACH ) I, PAUL C. JONES, the duly elected, qualified and acting City Clerk of the City of Huntington Beach, and ex- offici.o Clerk of the City Council of said City, do hereby certify that the whole number of members of the City Council;, of the City of Huntington Beach ,is seven; that the foregoing resolution was passed and adopted by the affirmative vote of more than a majority of all the members of said City Council a regular meeting_ thereof held on the day of 19 , by the following vote , AYES: Councilmen; NOES: Councilmen: ABSENT: Councilmen: City Clerk and ex-o'fficio Clerk of the City Council of the City of Huntington Beach, California ,d Feb_rvary 13, 1973 TO: City Council FROM; City Attorney SUBJECT; Resolution Authorizing the Mayor and City Clerk to Execute_Agreement for Geologic and Seismic Safety Study At the request of the City Administrator and the Planning Director, we transmit resolution and copy of subject agreement. The resolution approves the agreement and authorizes and directs the Mayor and City Clerk to execute the agreement on behalf of the City. Respectfully submitted, DON P. BONFA City Attorney /lm Attachment r v CITY 04WHunTif"IGTOn BEACH P.O.. BOX 190, CALIFORNIA 926413 PLANNING DEPT. (714) 515-5271 APPROVLPD By CITX GOUIVCIL .......... TO: Honorable Mayor and City Council FROM: Planning Department DATE April 30, 1973............................ y ATTN: David D. Rowlands, City Administrator RE: GEOLOGIC AND SEISMIC STUDY At the February 20, 1973 meeting of the City Council the Planning Department's request for the retention of a consultant to perform a geologic and seismic study for the city was refused. The Council expressed concern over two points: 1. There was only one consultant considered by the department. 2. There was a study being considered by; the County of Orange to provide the same information to the city. On March 20, 1973 the Planning Department sent out 24 requests for proposals for the study to qualified firms in Orange and Los Angeles Counties. Nine responses were received. The Planning staff then screened the proposals and selected three firms that best met the criteria of the request for proposal. (Refer to Scope of Service attached.) The firms were Woodward -McNeill, Moore and Taber, and Leighton and Yen. Representatives of Public Works, Building, Civil Defense and Planning Department interviewed each of the firms Leighton and Yen was selected as the firm that would serve the city's need best. Also the Planning Department investigated the county sponsored study and found the following: 1. The study is being done by the California Division of Mines and Geology and the County of Orange Building Department and is being coordinated by the Orange County Planning Directors' Association. Completion is scheduled for January 1974. Ask AOL W RP Honorable Mayor and City Council April 30, 1973 Page 2 2. The study is on a broad county -wide scale and will not result in a Seismic Safety Element. (The information is being developed at a scale of 1"=40001 as opposed to 1"=800' being requested by the Planning Department. 3. A consultant ,could- have to be retained to further develop the county study to meet our needs. The Planning Department contacted the Orange County Planning Directors' Association, California Division of Minus and Geology and the Orange County Building Department to verify the information. Also a representative of California Division of Mines and Geology was present at a portion of the oral interviews and confirmed this to the interview board. In addition to the SeismicSafetyElement the information developed in this study will be valuable for use in other planning programs such as the Conservation, and Open Space Elements, Therefore the Planning Department requests your approval to negotiate a contract with Leighton -Yen and ,associates to perform this study as outlined in their proposal for the sum of $7,500. Respectfully submitted, K. A. Reynold Planning Director Ask Ask SCOPE OF STUDY MY OF PRWINGTOL1 BEACH GEOLOGIC AND SEISITC SAFETY STUDY THE STUDY The study shall consist of .four principal tasks 1. The collection and compilation of existing geologic, soils, and seismic data. Z. An assessment of existing data and specific factors for further study. 3. The study and analysis of high -priority geologic, soils, and seismic factors. 4. 711e development and review of specific criteria as related to land use planning. Task I. Collection and Compilation of Existing Data Activities under this initial task shall consist of those efforts required to gather -and compile all available data on the geologic, soils, and seismic con d tions nf the NetvpcA Beach area. This data shall include, but not to limited to, information related to the following geologic, soils, and seismic aspects: 1, local geologic, formations ". empansive/collapsible soils 3. slope stability 4mineral resource depletion 5. land subsistence b. earthquakes 7. fault, rupture 8 tsuu;nam Data. to be gathered by the City staff will include aerial photographs, topo- graphic maps and geologic maps and report; of the Huntington Beach area from City files. The Consultant shall review all available existing literature and data from other sources and gather such information, as may be obtainable to complete the data base.Information gathered from all sources shall be compiled in such a form as to be readily available for future use by both the Consultant and City staff. Task II. Assessment of Existing Data Upon review of the existing available data. gathered under Task I it is anticipated that several geologic, soils and seismic factors will be identified that require further study. The Consultant shall identify these factors, and in cooperation with the City staff, assign priority rankings to each factor. The Consultant shall also develop and submit to the City staff, a phasing program for the continuance of such studies as determined to be beyond the present study scope. Task III. Study and Analysis of High -Priority Factors It is presently anticipated that the following geotechnical factors or conditions will require further study beyond the level of information provided from Task 1. As a part of the Scope of Study, these would include: 1. Seismic conditions - the relative susceptibility of all areas to seismic hazards, including surface ruptures from faulting, to ground motions, and to soil liquefaction. 2. Ground suosidence - resulting from future witharoxral of petroleum from underground reservoirs. 3. Expansive soils - the presence of expansive soils which impose speoia.l -requirements or future construction. Tas1t TV. Deve ,opment of Criteria for Lurid Use Planning From the various geologic, soils and seism;-- data and factors studied wider the -01'e;-ious vasls, •th;+ Consultant shall develop and racommend specific criteria by }Which to assess the type, design. 2 nd location of bu- dings and lan uses within various gao-physical areas of the City. These criteria will 'bet designed to s llow .he land use planner, as well as the civil or structural engineer to assess the relative impact of geologic, soils any seismic;, conditions on development throughout the City and to effect -various trade-off option In order that effective use can be made of the geologic, oils and seismic data that is to be gathered and analyzed during the course of the study, the follow- ing conditions should be met. 1. The data should be ;presented in such a form a, can be readily interpreted and used by study groups carrying out ivestigations of other elements or the General Plan. 2. The data should be presented in a manner ti Mich is readi.y under- standable by non -technical persons. 3, The data should be in a form which allows c;ont:ynual up ­ ding as more information becomes available i:i future. - r 4. The mzthodology for upgrading data banks should be presented an sufficient detail t allow eventual turnover to City staff. S. The geologic, soils sad seismic study should develop guidelines for further study, not only by public agericies, but more ,,importantly, studies which become a routine requirement of private developers. b. The geologic, soils and seismic study should matte full use of current state-of-the-art techniques. Data developed during the course of the study shall be presented in both map and report form. All maps shall be in a form suitable for the addition of future information. The City. shall :Furnish the Consultant with a base topographic trap cf a scale of l" 800' from which to develop the maps. Via report will interpret and present data used in the development of the maps; a discussion of the potential impact of the information contained on the maps, and the Consultants recommendations regarding future studies The traps to be include, are as of-t-!s: 1 Geologic tilap - This rap will present the distri> ution of geologic units within the study area, the structural character and com- position of the fo .rations, and other; b•tsic geologic and eng:bieerirg properties of each unit. Developed primarily from existing data, this map will form, one-ef the data rases from which other maps may be developed. ?. Expansive; Collapsible Soils lvi-,tp - The Consultant will present in this Tnap oxisting and potential areas containing expansive soils arrl collAps-Lble so:,?. sets, as well. as a rating of the expansion potential of the former ma?,aerials. 3. Active Fault i`a This map shall :identify the location of recent and active faults throughout the study area, and in particular the Nei�port-molt;+=d Fault which passes through the corporate limits of thie City, The Consultant will ascertain thesurfacetraces of this fault, determine whether movement has taken place along these txdces, �Md will present zones of movement or potential move- rrent in ..•elan on to faults. P .n was 4. Map of Arell Sub;iect to Soil Liquefaction a major earthquake were to occur on the I*e;rport-Inglewood Fault, it is conceivable that certain hear-s!;ore areas might undergo liquefaction, or a rr;_mentar} loss ;, E strength. Ilie Consultant will define such potential `liaue .faction zones through the use of a dynamic -stress computer analysis, vying representative soil profiles of the various local, near -shore conditions. S. Ground Resp se Spectra Zone Map.- The Consultant will develop and delineate upon this map various 'response -spectrum zones utilizing a d-namic-stress computer program, at the same time 'the soil lique factioi, studies are being carried out. By developing and utilizing est.Ura.ted gro m-cl motion characteristics, the Consultant will ieterm -ie` the character)^tic response spectra-m at the surface of sites or areas throughout the City. An analysis and recommendations will be maje by the Consultant as to the type, design and location of buildings and land uses within each area designated on the map. The City staff, insofar as practical, will provide the Consultant with assistance in draftLiirg services, report reproduction, and other allied services. PRRFORMAPCE Performance time on the study shall be four months. Regular meetingo with the Planning Department will be scheduled as necessa._y. A minimum cf three presentations to the 'Planning Commission and City Council will be required. f CITY OF nTIf T P. BEACH �( P.O. BOX 190, CALIFORNIA 92648 �: -- PLANNING DEPT: (714) 536-5271 TO: Honorable Mayor and City CouncilFROM: ,�j��� %Y U DATE: Planning l- DepartmentT j�f� DATE: May 1F 1973 ' ATTN: David L Rowlands, City Administrator RE: GEOLOGIC AND SEISMIC SAFETY STUDY 17 Transmitted herewith ror your approval is the agreement with Leighton-Yen'and`Associates to perform a Geologic and Seismic Safety Study for the sum of $7,500. Approval was given by your ,body to negotiate this contract at the May 7 1,9'33 City Council meeting_. Respectfully ubmitted, f t K. A. Reynolds 21anning Director KA,R: b'wo enc.