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Home My WebLink AboutOCSD 01-24RESOLUTION NO.OCSD 01-24 MAKING CERTAIN FINDINGS RELATING TO LESS THAN SIGNIFICANT ENVIRONMENTAL EFFECTS IDENTIFIED IN THE INITIAL STUDY!MITIGATED NEGATIVE DECLARATION FOR THE CONSTRUCTION OF A NEW PUMP STATION ORIGINALLY DESIGATED AS “REHABILITATION OF THE 14TH STREET PUMP STATION”;APPROVING MITIGATION MEASURES;ADOPTING THE FINAL INITIAL STUDY!MITIGATED NEGATIVE DECLARATION FOR THE REHABILITATION OF THE 14TH STREET PUMP STATION;AUTHORIZING THE FILING OF A NOTICE OF DETERMINATION RE SAID PROJECT;AND ADOPTING A MITIGATION MONITORING AND REPORTING PROGRAM A RESOLUTION OF THE BOARD OF DIRECTORS OF ORANGE COUNTY SANITATION DISTRICT MAKING CERTAIN FINDINGS RELATING TO LESS THAN SIGNIFICANT ENVIRONMENTAL EFFECTS IDENTIFIED IN THE INITIAL STUDY!MITIGATED NEGATIVE DECLARATION FOR THE CONSTRUCTION OF A NEW PUMP STATION ORIGINALLY DESIGNATED AS “REHABILITATION OF THE 14TH STREET PUMP STATION”; APPROVING MITIGATION MEASURES;ADOPTING THE FINAL INITIAL STUDY!MITIGATED NEGATIVE DECLARATION FOR THE REHABILITATION OF THE 14TH STREET PUMP STATION; AUTHORIZING THE FILING OF A NOTICE OF DETERMINATION RE SAID PROJECT;AND ADOPTING A MITIGATION MONITORING AND REPORTING PROGRAM WHEREAS,the Board of Directors of the Orange County Sanitation District (“District”)is presently considering the adoption of the Final Initial Study! Mitigated Negative Declaration for the Rehabilitation of the 14th Street Pump Station (“Project”);and WHEREAS,District is the Lead Agency for the preparation and construction of environmental documents for the Final Initial Study!Mitigated Negative Declaration for the Project,which is consistent with the 1999 Strategic Plan Program Environmental Impact Report,pursuant to the California Environmental Quality Act of 1970,as amended (“CEQA”),the State of California CEQA Guidelines,and District’s CEQA procedures;and, WHEREAS,to assess the Rehabilitation of the 14th Street Pump Station’s environmental impacts objectively,District prepared an Initial Study to assess the potentially-significant environmental impacts,mitigation measures,if any,and alternatives associated with the Project;and, WS&S -#144556:No.3 -12/05/01 1 WHEREAS,the Initial Study resulted in a determination that there were only less than significant impacts associated with the proposed Project if certain mitigation measures were implemented,therefore a Mitigated Negative Declaration was prepared;and, WHEREAS,District has consulted with other public agencies and the general public,giving them an opportunity to comment on the Initial Study/Mitigated Negative Declaration,as required by CEQA;and, WHEREAS,District has objectively evaluated,received,and filed comments from public agencies and persons who reviewed the Initial Study/Mitigated Negative Declaration;and, WHEREAS,the comments and recommendations received on the Initial Study/Mitigated Negative Declaration,either in full or in summary,together with the District’s responses to significant environmental concerns raised in the review,have been included in the Final Initial Study/Mitigated Negative Declaration;and, WHEREAS,said Final Initial Study/Mitigated Negative Declaration has been presented to the District’s Board of Directors for review and consideration prior to the final approval of,and commitment to,the Final Initial Study/Mitigated Negative Declaration for the Rehabilitation of the 14th Street Pump Station;and, WHEREAS,District has prepared a Mitigation Monitoring and Reporting Program,designed to ensure that the approved mitigation measures are implemented during Project construction and operation. NOW,THEREFORE,the Board of Directors of Orange County Sanitation District, DOES HEREBY RESOLVE,DETERMINE,AND ORDER: Section 1 That changes or alterations have been required in,or incorporated into,the proposed Project,before the proposed Initial Study/Mitigated Negative Declaration was released for public review,which avoid or mitigate significant environmental effects to a point where clearly no significant effect on the environment would occur,all identified in the Final Initial Study/Mitigated Negative Declaration. Section 2 That there is no substantial evidence that the Project will have a significant impact on the environment. Section 3 That the Final Initial Study/Mitigated Negative Declaration reflects District’s independent judgment and analysis. WS&S -#144556:No.3 -12/05/01 2 Section 4 The documents and other materials that constitute the record of proceedings upon which the District’s decision is based are located at the Orange County Sanitation District,10844 Ellis Avenue,Fountain Valley, California,92708.The Custodian of these documents and other materials is the Director of Engineering,Attention of William Cassidy,Project Manager. Section 5 That the proposed Project consists of the construction of a new pump station,new force main,and extension of the existing upstream gravity sewer.The proposed Project also includes the decommissioning of the existing pump station.The proposed Project,without mitigation,could create a number of potentially significant environmental effects that have been identified in the Final Initial Study/Mitigated Negative Declaration,and have been taken into account in selecting the best methods for achieving Project objectives with minimal environmental impacts. Section 6 Potentially significant impacts identified in the Final Initial Study/Mitigated Negative Declaration that will be mitigated to less than significant levels by District are as follows: A.The architectural design of the pump station is to integrate with the surrounding area,incorporating low water-use plants to prevent degradation of the existing visual character of the site or surrounding area. B.The station’s exterior lighting is to be directed downward and oriented to ensure that no light source is directly visible from neighboring residential areas.Motion sensor lighting is to be used. C.Air emissions from equipment vehicles will be mitigated by continued compliance with South Coast Air Quality Management District requirements.Equipment will shut off when not in direct use and located as far as possible from residential areas.The constructor is to notify residences on West Balboa Boulevard and the Newport Beach Grammar School by posting notices of planned construction activities at least one (1)week in advance. D.That a Traffic Control Plan will be developed and included as part of the District’s Standard Plans and Specifications.Emergency vehicle access will be provided,via a locked gate accessible to all emergency service agencies.Automobile,bicycle,and pedestrian access to the area will be temporarily prohibited to protect public safety and facilitate a more rapid completion of the Project via fencing and detour signs. E.Disturbance of cultural or paleontological resources during construction will be mitigated by halting work if unusual materials are found,and then consulting with qualified professionals to examine the materials,record findings,and properly curate any significant artifacts discovered. WS&S -#144556:No.3 -12/05/01 3 F.Construction staging areas shall be designed to contain contaminants such as oil,grease,and fuel products so that they do not drain towards receiving waters or storm drain inlets.Overnight drip pans are to be placed beneath heavy-duty construction equipment. G.Temporary construction noise will be mitigated by limiting construction hours and informing the neighbors of construction activities. H.Disruption of roadways and parking during construction will be mitigated through preparation of traffic control plans that maintain maximum safe traffic access.The Newport Beach Grammar School and nearby Churches are to be notified at least one (I)week in advance of any lane closures.The Contractor is to provide for a crossing guard and traffic police at the intersection of Balboa Boulevard and 14th Street to ensure the safety of the Elementary School children arriving and departing from school. Section 7 That the Board of Directors adopts the Final Initial Study/Mitigated Negative Declaration. Section 8 That the Board of Directors approves the mitigation measures,and adopts the Mitigation Monitoring and Reporting Program. Section 9 That the Board Secretary is authorized and directed to file the Notice of Determination and any other documents in accordance with the requirements of CEQA and the District’s CEQA Procedures. PASSED AND ADOPTED at a regular meeting held December 19,2001. AT~E~$T: ~ BOARD S~CRETA -. WS&S -#144556:No.3-12/05/01 4 REHABILITATION OF THE 14TH STREET PUMP STATION, NEWPORT BEACH Initial Study /Mitigated Negative Declaration November 13,2001 Preparedfor Orange County Sanitation District E SA Environmental Science Associates REHABILITATION OF THE 14TH STREET PUMP STATION, NEWPORT BEACH Initial Study /Mitigated Negative Declaration L.November 13,2001 Prepared for Orange County Sanitation District 4221 Wilshire Boulevard 225 Bush Street 1000 Broadway 700 Univcrsity Avcnuc 2685 Ulmerton Rd.Environmental Suite 480 Suite 1700 Suite 410 Suite 130 #102 Science Los Angeles,San Francisco,Oakland,Sacramento,Clearwater, AOCIateS California California California California Florida 90010-3512 94104 94607 95825 33762 (323)933-6111 (415)896-5900 (510)839-5066 (916)564-4500 (727)572-5226 201168 ORANGE COUNTY SANITATION DISTRICT REHABILITATION OF THE l4~STREET PUMP STATION INITIAL STUDY/MITIGATED NEGATIVE DECLARATION TABLE OF CONTENTS SECTION 1 INTRODUCTION I Project Background I Project Description 2 Project Location 3 Project Schedule 3 CEQA Issues and Procedures 4 SECTION 2 INiTIAL STUDY CHECKLIST 7 EVALUATION OF ENVIRONMENTAL IMPACTS 9 Aesthetics 9 Agricultural Resources 9 Air Quality 10 Biological Resources 10 Cultural Resources 11 L.Geology and Soils 12 Hazards and Hazardous Materials 13 Hydrology and Water Quality 14 Land Use and Planning 15 Mineral Resources 15 Noise 15 Population and Housing 16 Public Services 17 Recreation 17 Transportation/Traffic 17 Utilities and Service Systems 18 Mandatory Findings of Significance 19 SECTION 3 DISCUSSION OF IMPACTS AND MITIGATION MEASURES 20 Aesthetics 20 Agricultural Resources 21 AirQuality 21 Biological Resources 24 Cultural Resources 25 Geology and Soils 26 Hazards and Hazardous Materials 27 ORANGE COUNTY SANITATION DISTRICT REHABILITATION OF THE l4~STREET PUMP STATION INITIAL STUDY/MITIGATED NEGATIVE DECLARATION TABLE OF CONTENTS -(Continued) Hydrology and Water Quality 28 Land Use and Planning 30 Mineral Resources 31 Noise 31 Population and Housing 33 Public Services 33 Recreation 34 TransportationiTrafflc 34 Utilities and Service Systems 36 Mandatory Findings of Significance 36 SECTION 4 SUMMARY OF MITIGATION MEASURES 38 SECTION 5 REFERENCES 40 LIST OF FIGURES L Figure 1 Site Location Map 5 Figure 2 View of Existing 14th Street Pump Station 6 Figure 3 View of Proposed New Pump Station 6 11 SECTION 1.0 INTRODUCTION This document presents the results of an Initial Study to determine if any significant environmental effects could occur from the proposed project.The Initial Study was prepared pursuant to the requirements of Section 15063 of the California Environmental Quality Act (CEQA)Guidelines. PROJECT BACKGROUND The Orange County Sanitation District (OCSD)maintains a collection system consisting of twelve -trunk sewer lines that collect and convey wastewater from the service area in Orange County to treatment facilities located in the cities of Huntington Beach and Fountain Valley.The collection system consists of gravity sewers and 20 pump stations.One of OCSD’s Newport Beach trunk sewer lines follows West Balboa Boulevard through Newport Beach and terminates at OCSD’s Treatment Plant No.2 located in Huntington Beach.The sewer was installed in 1945 and later rehabilitated in 1989.An assessment of this sewer found that the pump station located in an underground vault on West Balboa Boulevard at 14th Street needed to be substantially refurbished. Subsequent assessments determined that the existing underground vault could not be refurbished. As a result,a new location was located on a nearby vacant lot.OCSD proposes to construct a new pump station vault and electrical building to replace the existing pump station.The capacity of the pump station and the existing sewer would not change. OCSD prepared a Program Environmental Impact Report (PEIR)in 1999 to assess the wastewater facility’s 20-year Strategic Plan.The PEIR identified capital improvement projects needed to accommodate projected wastewater flows within the service area through the year 2020.The identified projects included treatment system upgrades,discharge capacity improvements,and collection system improvements.Although the PEIR covers pump station replacements,it does not specifically address the 14th Street Pump Station.Since rehabilitation of the 14th Street ~ Station has not previously been assessed,an Initial Study has been prepared to comply with CEQA requirements. Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial Study/Mitigated Negative Declaration PROJECT DESCRIPTION The proposed project will replace the existing pump station located at 14th Street and West Balboa Boulevard in Newport Beach with a new pump station located on a currently vacant lot on West Balboa Boulevard located approximately 650 feet from the existing pump station (see Figure 1). The project will include excavating a trench from the existing facility just west of the intersection of 14th Street and West Balboa Boulevard to the new facility location at 1514 West Balboa Boulevard (see Figure 3).The project will also include excavating a 27-foot deep,below-grade vault at the new location to house new pumping equipment.A one-story,576 square-foot,above- grade building housing electrical equipment will be constructed on the new site.When the new pump station is complete the project will involve the decommissioning of the existing facility. The existing gravity sewer will be extended approximately 650 feet from the existing pump station along the inside eastbound lane of West Balboa Boulevard.The sewer will then turn north and extend across the westbound lanes to the new pump station location.The sewer extension will enter the pump station at 12 feet below grade.A new force main will be installed from the pump station to the existing gravity sewer within West Balboa Boulevard approximately five feet below grade. Excavation for the new pump station will be approximately 27 feet below ground surface.The shoring shall consist of diaphragm walls constructed of concrete piling.No pile driving will be necessary.The excavation will be below groundwater levels,requiring dewatering with a sump pump.Once excavated,a concrete seal floor will be poured in the standing water.The concrete seal floor braces the shoring walls at the base and steel beam bracing will be used at the top.The underground pump station structure will consist of a steel reinforced concrete mat foundation, walls,and ground level floor. A one-story building will be placed over the vault to house electrical equipment.The above-ground concrete structure is estimated to be Sixteen (16)feet by thirty-six (36)feet and approximately twenty (20)feet in height.The floor of the electrical building will be a minimum of one foot above the base flood elevation for the area.The architectural design of the building 2 Orange County Sanitation District Rehabilitation of the 14”Street Pump Station Initial Study/Mitigated Negative Declaration will integrate with the surrounding urban design.Entrance to the new pump station will be accessed from the alley just north of the property. Decommissioning of the existing pump station will involve exposing the existing structure and removing the upper five feet of concrete below West Balboa Boulevard.The remaining vault will be filled with cement slurry and abandoned in place.After completion of the decommissioning process,the affected portion of West Balboa Boulevard will be resurfaced to match the existing condition. The property at 1514 West Balboa Boulevard is currently privately owned.The new pump station location is an empty lot,adjacent to a Southern California Edison (SCE)substation site and a three-story residential apartment building.OCSD plans on acquiring the property prior to implementation of the proposed project.Construction of the new pump station will not impede operation of the existing 14th Street Pump Station and service will not be interrupted to surrounding residents and businesses. PROJECT LOCATION~ The existing pump station is owned by OCSD (see Figure 2)and is located at the intersection of West Balboa Boulevard and 14th Street on the Balboa Peninsula in Newport Beach,California. The 14th Street pump station is beneath the West Balboa Boulevard median on the west side of the intersection.The new property to be acquired is adjacent to an SCE-owned substation site and a three-story residential apartment building.Two churches are located on the block (Our Lady of Mount Carmel,1441 West Balboa Blvd and Christ Church by the Sea,1400 West Balboa).One elementary school (Newport Beach Grammar School),and the Los Arenas Park are located within close proximity of the project.Other features of the area include residential properties,Newport Bay,beachfront,and small commercial establishments. PROJECT SCHEDULE Construction related activities would be conducted eight hours per day,five days per week. Excavations for the project would last approximately 16 weeks,non-currently.Construction of the electrical building and below-ground structure will take approximately eight weeks.The remaining 48 weeks will consist of equipment installation,landscaping,testing and time necessary 3 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial Study/Mitigated Negative Declaration to receive materials and other equipment.The proposed project,from “Notice to Proceed”to the acceptance of the fmished product would take approximately 72 weeks. CEQA ISSUES AN1)PROCEDURES In accordance with the CEQA Guidelines,an Initial Study/Mitigated Negative Declaration has been prepared to assess the proposed project’s effect on the environment and provides the appropriate level of analysis to comply with CEQA requirements to ensure that no significant impacts would result.The Initial Study/Mitigated Negative Declaration will be available for public review for 30 days.Following the review period,the OCSD Board of Directors will review the public comments received and decide whether to adopt the Mitigated Negative Declaration. 4 Orange County Sanitation District Rehabilitation of the 14t~1 Street Pump Station Initial StudyfMitigated Negative Declaration ‘AW&tt% ~1+L+{~°EE fl 1 fl 21 I I. Proposed New Sewer Location Gravity Sewer -approx.10.5 to 12.0 below ground surface Force Main --—-approx.5.0 below ground surface Gravity Sewer approx.5.0’below ground surface New Pump Station at 1514 West Balboa Blvd SITE LOCATI ON +1~FFR®H®®~FTil IF®RlmNji R~tflU ~23J 1. Hj:• ~- ®T@i@1o.1 I ii.i~:Existing Sewer L 1 ~ Ibi North NOT TO SCALE NA~6N lH~ :BALBOA BLVD Station Under Street fl~~JLTIjNEWPORTL_~H I EL~N9~Y L~L IT1LI~ - .—O~SD 141/i Street Pimip Slatiün 15/201168 • SOURCE:Environmental Science Associates Figure 1 Location of Existing and Proposed Pump Station Sites L SOURCE:Environmental Science Associates SOURCE:Environmental Science Associates OCSD 14th Street Pump Station IS/2O1/68~ Figure 2 View of Existmg 14th Street Pump Station Location Beneath Balboa Blvd OCSD /4th Street Pump Station IS/201168u Figure 3 View of Proposed New Pump Station Location at 1514 Balboa Blvd SECTION 2.0 INITIAL STUDY CHECKLIST The following Environmental Checklist and discussion of potential environmental effects were completed in accordance with Section 1 5063(d)(3)of the CEQA Guidelines to determine if the project may have any significant effect on the environment. A brief explanation is provided for all determinations.A “No Impact”or “Less than Significant Impact”determination is made when the project will not have any impact or will not have a significant effect on the environment for that issue area based on a project-specific analysis. CEQA ENVIRONMENTAL CHECKLIST FORM AND INITIAL STUDY 1.Project Title:Rehabilitation of the 14th Street Pump Station 2.Lead Agency Name and Address:Orange County Sanitation District 10844 Ellis Avenue Fountain Valley,CA 92708 3.Contact Person and Phone Number:Jim Herberg 714-593-7310 4.Project Location:1514 West Balboa Boulevard Newport Beach,CA 92663 5.Project Sponsor’s Name and Address:Orange County Sanitation District 6.General Plan Designation:Medium Density Residential and Open Space 7.Zoning:Zoning is currently residential,but plans are to convert the area back to a public utility zone after the property is obtained by OCSD. 8.Description of Project:Construction of a new pump station at a new location,including decommissioning of existing pump station. 9.Surrounding Land Uses and Setting:Surrounding land uses include residential property,utilities,churches,a school,a park and a public beach. 10.Other agencies whose approval is required: City of Newport Beach encroachment permit,zoning change California Coastal Commission coastal development permit 7 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial Study/Mitigated Negative Declaration Environmental Factors Potentially Affected: The environmental factors checked below would be potentially affected by this project,involving at least one impact that is a “Potentially Significant Impact”as Indicated by the checklist on the following pages: ~Aesthetics 0 Agriculture Resources ~Air Quality ~Biological Resources ~Cultural Resources ~Geology /Soils 0 Hazards &Hazardous Materials 0 Hydrology /Water Quality J Land Use /Planning 0 Mineral Resources ~Noise 0 Population /Housing ~Public Services 0 Recreation ~Transportation/Traffic O Utilities I Service Systems 0 Mandatoiy Findings of Significance DETERMINATION:(To be completed by lead agency) On the basis of this initial evaluation: 0 I find that the proposed project COULD NOT have a significant effect on the environment,and a NEGATiVE DECLARATION will be prepared. ~I find that although the proposed project could have a significant effect on the environment, there will not be a significant effect in this case because revisions in the project have been made by or agreed to by the project proponent.A MITIGATED NEGATIVE DECLARATION will be prepared. 0 I find that the proposed project MAY have a significant effect on the environment,and an ENVIRONMENTAL IMPACT REPORT is required. 0 I find that the proposed project MAY have a “potentially significant impact”or “potentially significant unless mitigated”impact on the environment,but at least one effect 1)has been adequately analyzed in an earlier document pursuant to applicable legal standards,and 2)has been addressed by mitigation measures based on the earlier analysis as described on attached sheets.An ENVIRONMENTAL IMPACT REPORT is required,but it must analyze only the effects that remain to be addressed. 0 I find that although the proposed project could have a significant effect on the environment, because all potentially significant effects (a)have been analyzed adequately in an earlier EIR or NEqA~’1i~E DECLARATION pursuant to applicable standards,and (b)have been avoided or mi~ated pursuant to at~arlier EIR or NEGATIVE DECLARATION,including revisions or m~igation in tha6ryimposed upon the proposed project,nothing further is required. •C //-/~-ô~ Signature 2~fr’z A ~-C/I~JMJ Date ForPrintedName 8 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial Study/Mitigated Negative Declaration Less Than Sign~flcant Potentially With Less Than Sign ~fl cant Mitigation Significant No Impact Incorporation Impact Impact I.AESTHETICS —Would the project: Issues (and Supporting Information Sources): a)Have a substantial adverse effect on a scenic vista?0 0 0 b)Substantially damage scenic resources,including,but not limited to,trees,rock outcroppings,and historic buildings within a state scenic highway?El 0 0 c)Substantially degrade the existing visual character or quality of the site and its surroundings?El 0 0 d)Create a new source of substantial light or glare which would adversely affect day or nighttime views in the area?El El 0 II.AGRICULTURE RESOURCES: In determining whether impacts to agricultural resources are significant environmental effects,lead agencies may refer to the California Agricultural Land Evaluation and Site Assessment Model prepared by the California Department of Conservation as an optional model to use in assessing impacts on agriculture and farmland. Would the project: Issues (and Supporting Information Sources): a)Convert Prime Farmland,Unique Farmland,or Farmland of Statewide Importance (Farmland),as shown on the maps prepared pursuant to the Farmland Mapping and Monitoring Program of the California Resources Agency,to non-agricultural use?El El El b)Conflict with existing zoning for agricultural use,or a Williamson Act contract?0 El El c)Involve other changes in the existing environment which,due to their location or nature,could result in conversion of Farmland,to non-agricultural use?0 El El 9 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial Study/Mitigated Negative Declaration Less Than Sign~fl cant Potentially With Less Than Significant Mitigation Sign~/~cani No Imvact Incorporation Impact Impact III.AIR QUALITY:Where available,the significance criteria established by the applicable air quality management or air pollution control district may be relied upon to make the following determinations. Would the project: Issues (and Supporting Information Sources): a)Conflict with or obstruct Implementation of the applicable Air Quality Attainment Plan?0 0 b)Violate any air quality standard or contribute to an existing or projected air quality violation?0 0 c)Result in a cumulatively considerable net increase of any criteria pollutant for which the project region is non-attainment under an applicable federal or state ambient air quality standard (including releasing emissions,which exceed quantitative thresholds for ozone precursors)?0 0 0 d)Expose sensitive receptors to substantial pollutant concentrations?0 0 0 e)Create objectionable odors affecting a substantial number of people?0 0 IV.BIOLOGICAL RESOURCES —Would the project: Issues (and Supporting Information Sources): a)Have a substantial adverse effect,either directly or through habitat modifications,on any species identified as a candidate,sensitive,or special-status species in local or regional plans,policies,or regulations,or by the California Department of Fish and Game or U.S. Fish and Wildlife Service?0 0 0 b)Have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans,policies,regulations or by the California Department of Fish and Game or U.S.Fish and Wildlife Service?0 0 0 10 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial StudyfMitigated Negative Declaration Less Than Sign~Icant Potentially With Less Than Sign~flcant Mitigation Sign~fi cant No Imnact Incorporation Imnact Imnact c)Have a substantial adverse effect on federally protected wetlands as defmed by Section 404 of the Clean Water Act (including,but not limited to,marsh,vernal pool, coastal,etc.)through direct removal,filling, hydrological interruption,or other means?0 d)Interfere substantially with the movement of any native resident or migratory fish or wildlife corridors,or impede the use of native wildlife nursery sites?0 0 0 e)Conflict with any local policies or ordinances protecting biological resources,such as a tree preservation policy or ordinance?0 0 0 f)Conflict with the provisions of an adopted Habitat Conservation Plan,Natural Conservation Community Plan,or other approved local,regional,or state habitat conservation plan?0 0 0 V.CULTURAL RESOURCES —Would the project: Issues (and Supporting Information Sources): a)Cause a substantial adverse change in the significance of a historical resource as defined in §15064.5? b)Cause a substantial adverse change in the significance of a unique archaeological resource pursuant to §15064.5?0 0 0 c)Directly or indirectly destroy a unique paleontological resource or site or unique geologic feature?0 0 D d)Disturb any human remains,including those interred outside of formal cemeteries?0 0 0 11 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial Study/Mitigated Negative Declaration Less Than Sign /fican: Potential/v With Less Than Sign ~fIcant Mitigation Sign /17 cant No imoact Incorporation Impact Impact VI.GEOLOGY AND SOILS —Would the project: Issues (and Supporting Information Sources): a)Expose people or structures to potential substantial adverse effects,including the risk of loss,injury,or death involving:El El 0 i)Rupture of a known earthquake fault,as delineated on the most recent Aiquist-Priolo Earthquake Fault Zoning Map issued by the State Geologist for the area or based on other substantial evidence of a known fault?Refer to Division of Mines and Geology Special Publication 42.El El 0 ii)Strong seismic ground shaking?El El 0 iii)Seismic-related ground failure,including liquefaction?El 0 0 iv)Landslides?El El El b)Result in substantial soil erosion or the loss of topsoil?El El 0 c)Be located on strata or soil that is unstable,or that would become unstable as a result of the project,and potentially result in on-or off-site landslide,lateral spreading,subsidence,liquefaction,or collapse?El El 0 d)Be located on expansive soil,as defined in Table 18-1 - B of the Uniform Building Code,creating substantial risks to life or property?0 El 0 e)Have soils incapable of adequately supporting the use of septic tanks or alternative wastewater disposal systems where sewers are not available for the disposal of wastewater?El El El 12 Orange County Sanitation District Rehabilitation of the 14k”Street Pump Station Initial Study/Mitigated Negative Declaration Less Than Sign~lIcant Potentially With Less Than Sign jfl cant Mitigation Sign~/lcant No Jmvact Incorvo ratio,,Impact Imoact VII.HAZARDS AND HAZARDOUS MATERIALS - Would the project: a)Create a significant hazard to the public or the environment through the routine transport,use,or disposal of hazardous materials?0 El El b)Create a significant hazard to the public or the environment through reasonably foreseeable upset and accident conditions involving the release of hazardous materials into the environment?0 0 0 c)Emit hazardous emissions or handle hazardous or acutely hazardous materials,substances,or waste within one-quarter mile of an existing or proposed school?El El 0 d)Be located on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code Section 65962.5 and,as a result, would it create a significant hazard to the public or the environment?El El El e)For a project located within an airport land use plan or, where such a plan has not been adopted,within two miles of a public airport or public use airport,would the project result in a safety hazard for people residing or working in the project area?El El El f)For a project within the vicinity of a private airstrip, would the project result in a safety hazard for people residing or working in the project area?El 0 El g)Impair implementation of or physically interfere with an adopted emergency response plan or emergency evacuation plan?0 El 0 h)Expose people or structures to a significant risk of loss, injuxy or death involving wildiand fires,including where wildlands are adjacent to urbanized areas or where residences are intermixed with wildiands?El El El 13 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial Study/Mitigated Negative Declaration Less Than Sign ~canz Potentially With Less Than Sign~fIcant Mitigation Sign~can:No Im~acr Incorvo ration Im~pct Impact VIII.HYDROLOGY AND WATER QUALITY - Would the project: Issues (and Supporting Information Sources): a)Violate any water quality standards or waste discharge requirements?E1 0 0 b)Substantially deplete groundwater supplies or interfere substantially with groundwater recharge such that there should be a net deficit in aquifer volume or a lowering of the local groundwater table level (e.g.,the production rate of pre-existing nearby wells would drop to a level which would not support existing land uses or planned uses for which permits have been granted)?0 0 0 c)Substantially alter the existing drainage pattern of the site or area,including through the alteration of the course of a stream or river,in a manner which would result in substantial erosion or siltation on-or off-site?0 0 0 d)Substantially alter the existing drainage pattern of the site or area,including through the alteration of the course of a stream or river,or substantially increase the rate or amount of surface runoff in a manner which would result in flooding on-or off-site?0 0 0 e)Create or contribute runoff water which would exceed the capacity of existing or planned storm water drainage systems?0 f)Otherwise substantially degrade water quality?0 0 g)Place housing within a 100-year flood hazard area as mapped on a federal Flood Hazard Boundaiy or Flood Insurance Rate Map or other flood hazard delineation map? h)Place housing within a 100-year flood hazard area structures which would impede or redirect flood flows?0 0 0 i)Expose people or structures to a significant risk of loss, injury or death involving flooding,including flooding as a result of the failure of a levee or dam?0 14 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial Study/Mitigated Negative Declaration Less Than Sign~ficant Potentially With Less Than Significant Mitigation Sign~flcant No Jm~act Incorz,o ration ~Lmyact lmz~acI j)Inundation of seiche,tsunami,or mudflow?D IX.LAND USE AND PLANNING —Would the project: Issues (and Supporting Information Sources): a)Physically divide an established community?0 0 0 b)Conflict with any applicable land use plan,policy,or regulation of an agency with jurisdiction over the project (including,but not limited to the general plan, specific plan,local coastal program,or zoning ordinance)adopted for the purpose of avoiding or mitigating an environmental effect?0 0 c)Conflict with any applicable habitat conservation plan or natural communities’conservation plan?0 0 X.MINERAL RESOURCES —Would the project: Issues (and Supporting Information Sources): a)Result in the loss of availability of a known mineral resource that would be of value to the region and the residents of the state?0 0 0 b)Result in the loss of availability of a locally-important mineral resource recovery site delineated on a local general plan,specific plan,or other land use plan?0 0 0 XI.NOISE —Would the project result in: Issues (and Supporting Information Sources): a)Exposure of persons to or generation of noise levels in excess of standards established in the local general plan or noise ordinance,or applicable standards of other agencies?0 0 0 b)Exposure of persons to or generation of excessive groundborne vibration or groundborne noise levels?0 0 0 15 Orange County Sanitation District Rehabilitation of the 14Ih Street Pump Station Initial Study/Mitigated Negative Declaration Less Than Significant Potentially With Less Than Sign ~flcant Mitigation Significant No Jmyact lncorz,oratjon Impact Impact c)A substantial permanent increase in ambient noise levels in the project vicinity above levels existing without the project?El El El d)A substantial temporary or periodic increase in ambient noise levels in the project vicinity above levels existing without the project?0 e)For a project located within an airport land use plan or,where such a plan has not been adopted,within two miles of a public airport of public use airport, would the project expose people residing or working in the project area to excessive noise levels?El El 0 f)For a project within the vicinity of a private airstrip, would the project expose people residing or working in the project area to excessive noise levels?El El El XII.POPULATION AND HOUSING —Would the project: Issues (and Supporting Information Sources): a)Induce substantial population growth in an area,either directly (for example,by proposing new homes and businesses)or indirectly (for example,through extension of roads or other infrastructure)?El El El b)Displace substantial numbers of existing housing, necessitating the construction of replacement housing elsewhere?El El El c)Displace substantial numbers of people necessitating the construction of replacement housing elsewhere?El El El 16 Orange County Sanitation District Rehabilitation of the I4~Street Pump Station Initial Study/Mitigated Negative Declaration Less Than Sign~li cant Potentially With Less Than Sign y’icant Mitigation Sign ~/Icant No Imoact Incorporation Imoact Impact XIII.PUBLIC SERVICES - Issues (and Supporting Infonnation Sources): a)Would the project result in substantial adverse physical impacts associated with the provision of new or physically altered governmental facilities,need for new or physically altered governmental facilities,the construction of which could cause significant environmental impacts,in order to maintain acceptable service ratios,response times,or other performance objectives for any of the public services: Fire protection?D 0 0 Police protection?0 0 0 Schools?0 0 0 Parks?0 0 0 Other public facilities?0 0 0 XIV.RECREATION - Issues (and Supporting Information Sources): a)Would the project increase the use of existing neighborhood and regional parks or other recreational facilities such that substantial physical deterioration of the facility would occur or be accelerated?0 0 0 b)Does the project include recreational facilities or require the construction or expansion of recreational facilities,which might have an adverse physical effect on the environment?]0 XV.TRANSPORTATION I TRAFFIC —Would the project: Issues (and Supporting Information Sources): a)Cause an increase in traffic,which is substantial in relation to the existing traffic load and capacity of the street system (i.e.,result in a substantial increase in either the number of vehicle trips,the volume-to- capacity ratio on roads,or congestion at intersections)?0 0 0 17 Orange County Sanitation District Rehabilitation of the l4tI~Street Pump Station Initial Study/Mitigated Negative Declaration Less Than Sign~icant Potentially With Less Than Significant Mitigation Sign~fi cant No Impact incorpo ration Impact Impact b)Exceed,either individually or cumulatively,a level of service standard established by the county congestion management agency for designated roads or highways?El El El c)Result in a change in air traffic patterns,including either an increase in traffic levels or a change in location that results in substantial safety risks?El El El d)Substantially increase hazards to a design feature (e.g., sharp curves or dangerous intersections)or incompatible uses (e.g.,farm equipment)?El 0 0 e)Result in inadequate emergency access?El El El f)Result in inadequate parking capacity?0 0 El g)Conflict with adopted policies supporting alternative transportation (e.g.,bus turnouts,bicycle racks)?El 0 0 XVI.UTILITIES AND SERVICE SYSTEMS - Would the project: Issues (and Supporting Information Sources): L. a)Exceed wastewater treatment requirements of the applicable Regional Water Quality Control Board?0 El 0 b)Require or result in the construction of new water or wastewater treatment facilities or expansion of existing facilities,the construction of which could cause significant environmental effects?El El El c)Require or result in the construction of new storm water drainage facilities or expansion of existing facilities,the construction of which could cause significant environmental effects?El El El d)Have sufficient water supplies available to serve the project from existing entitlements and resources,or are new or expanded entitlements needed?0 El El 18 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial StudyIMitigated Negative Declaration Leu Than Sign ~/icant Potentially With Less Than Sign ~/lcant Mitigation Sign~fIcant No Jm~act Incorporation jmpact lmDact e)Result in a determination by the wastewater treatment provider,which serves or may serve the project that it has adequate capacity to serve the project’s projected demand in addition to the provider’s existing commitments?El 0 El f)Be served by a landfill with sufficient permitted capacity to accommodate the project’s solid waste disposal needs?El 0 El g)Comply with federal,state,and local statutes and regulations related to solid waste?El El El XVII.MANDATORY FINDINGS OF SIGNIFICANCE Issues (and Supporting Information Sources): a)Does the project have the potential to degrade the quality of the environment,substantially reduce the habitat of a fish or wildlife species,cause a fish or wildlife population to drop below self-sustaining levels, threaten to eliminate a plant or animal community, reduce the number or restrict the range of a rare or endangered plant or animal or eliminate important examples of the major periods of California history or prehistory?El El El b)Does the project have impacts that are individually limited,but cumulatively considerable?(“Cumulative considerable”means that the incremental effects of a project are considerable when viewed in connection with the effects of past projects,the effects of other current projects,and the effects of probable future projects)?El El El c)Does the project have environmental effects which will cause substantial adverse effects on human beings, either directly or indirectly?0 El 0 19 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial StudyfMitigated Negative Declaration SECTION 3.0 DISCUSSION OF IMPACTS AND MITIGATION MEASURES I.AESTHETICS A.Have a substantial adverse effect on a scenic vista? B.Substantially damage scenic resources,including but not limited to,trees,rock outcroppings,and historic buildings within a state scenic highway? No Impact The project site is located on West Balboa Boulevard in the city of Newport Beach in Orange County (See Figure 1).West Balboa Boulevard is a residential street.The project site is not within a scenic vista as designated by the California Department of Transportation (Caltrans) under the California Scenic Highways Program’or located within a state designated scenic highway.2 The closest state-designated scenic highway is over 10 miles from the project site.The site is currently a cleared vacant lot and is situated approximately 150 feet south of the Newport Marina.Construction activities in the proposed project area would be short term.No impacts are anticipated,and no mitigation measures are required. C.Substantially degrade the existing visual character or quality of the site and its surroundings? Less than Significant Impact with Mitigation Incorporation Implementation of the proposed project would not degrade the existing visual character of the project site or surrounding area.The project would involve decommissioning an existing underground pump station and constructing a new pump station on a vacant lot.The pump station would be housed within a new 576 square foot one story building.The property is adjacent to a small SCE substation to the west and a three-story residential building to the east.The project site is located in an area with some residential and some commercial uses.Entrance to the new pump station would be from the alley just north of the property. The architectural design of the pump station would integrate with the surrounding area.The scale and design of the structure would be similar to the SCE building next door.Landscaping of the site would be incorporated into the design.OCSD is not required to obtain a building permit from the city of Newport Beach.However,a set of plans will be given to the City for review and comment.An encroachment permit must be obtained from the city of Newport Beach prior to beginning construction within West Balboa Boulevard.The proposed mitigation measure would ensure that impacts to aesthetics would be less than significant. I Southern California Association of Governments,Regional Transportation Plan,2001 2 Ibid. 20 Orange County Sanitation District Rehabilitation of the l4j~~Street Pump Station Initial StudyfMitigated Negative Declaration •OCSD shall provide landscaping on the pump station property incorporating low water-use plants. D.Create a new source of substantial light or glare which would adversely affect day or nighttime views in the area? Less than Significant Impact with Mitigation Incorporation Installation of lighting on the property could result in an impact of light or glare on the apartment complex next to the proposed project site.In particular,nighttime lighting adjacent to windows of the apartment complex would affect neighboring residents.The following mitigation measure would reduce this impact to a.less than significant level. •OCSD shall ensure that all permanent exterior lighting installed on the new project site is directed downward and oriented to ensure that no light source is directly visible from neighboring residential areas.Motion sensor lighting shall be installed on the project site.This will lessen the amount of light used at a given time and will reduce this impact to a less than significant level. II.AGRICULTURAL RESOURCES A.Convert Prime Farmland,Unique Farmland,or Farmland of Statewide Importance (Farmland),as shown on the maps prepared pursuant to the Farmland Mapping and Monitoring Program of the California Resources Agency,to non-agricultural use? B.Conflict with existing zoning for agricultural use,or a Williamson Act contract? C.Involve other changes in the existing environment which,due to their location or nature,could result in conversion of Farmland,to non-agricultural use? No Impact. Based on a site visit conducted by the OCSD’s environmental consultant,the project site is currently not used for agricultural purposes.There are no agricultural resources or operations in the vicinity of the project site and no lands enrolled under the Williamson Act that would be impacted.No mitigation measures are required. III.AIR QUALITY A.Conflict with or obstruct implementation of the applicable Air Quality Attainment Plan? No Impact The proposed project would involve brief construction activities that would require up to four pieces of construction equipment for up to 72 weeks.The project would be consistent with the Air Quality Management Plan (AQMP)last updated by the South Coast Air Quality Management District (SCAQMD)in 1997.No impacts are anticipated,and no mitigation measures are required. 21 Orange County Sanitation District Rehabilitation of the I4~~Street Pump Station Initial Study/Mitigated Negative Declaration B.Violate any air quality standard or contribute to an existing or projected air quality violation? C.Result in a cumulatively considerable net increase of any criteria pollutant for which the project region is non-attainment under an applicable federal or state ambient air quality standard (including releasing emissions,which exceed quantitative thresholds for ozone precursors)? Less than Significant Impact The project site is located in the South Coast Air Basin,which is designated as non-attainment for ozone (03),carbon monoxide (CO),and particulates (PM10).The air basin is classified as attainment for nitrogen oxides (NOr),sulfur dioxide (SO2),and lead (Pb).SCAQMD is the regional agency empowered to regulate stationary and mobile air emission sources.The project would not generate any additional operational air emissions.Once the 72-week construction period is completed,the trunk sewer would operate as it does currently.Construction activities would consist of demolition,excavation,building,pipeline placement,and trench back filling.It is anticipated that the proposed project would be completed within 72 weeks from the beginning of site clearing.Construction-related activities would occur eight hours per day,five days per week. Construction exhaust emissions will be generated from construction equipment,earth movement and demolition activities,construction workers’commute,and construction material hauling for the entire construction period.The SCAQMD’s CEQA Air Quality Handbook provides a methodology for estimating construction exhaust emissions based upon the number and type of equipment to be used and the duration of the construction period.This methodology was used to estimate construction exhaust emissions for the proposed project.The SCAQMD’s CEQA Air Quality Handbook presents emissions significance thresholds for construction and operations activities as shownin Table 1. Emissions estimates were calculated for the proposed project based on assumptions for typical construction activity.Heavy equipment will be required for approximately 24 weeks during excavation and constructing of the electrical building.Deliveiy trucks,tractors,and trailers,will be brought to the site to deliver materials and equipment throughout construction of the project, though not on a daily basis.The calculations assume that the project would be completed consecutively within the 72-week time period.Construction air emissions will take place during the 24-week excavation and building period,for which these calculations are based.The calculations also assume that a maximum of two backhoes and two large trucks would be operating for an average of six hours per day;five material deliveries would occur per day traveling 30 miles each way;and 10 employees would travel 60 miles round trip per day.The trenching and excavation activities would extract approximately 1,800 cubic yards of soil.The soil would be hauled either to the Treatment Plant No.2 in Huntington Beach for temporary storage or to a local landfill. 22 Orange County Sanitation District Rehabilitation of the 14tb Street Pump Station Initial Study/Mitigated Negative Declaration TABLE 1:AIR EMISSIONS SIGNIFICANCE THRESHOLDS ESTABLISHED BY SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT Carbon Monoxide (CO) Project Construction 550 lbs.per day Reactive Organic Compounds (ROC)75 lbs.per day Nitrogen Oxides (NOr)100 lbs.per day Particulates (PM10) Source:CEQA Air Quality Handbook,SCAQMD,1993. 150 lbs.per day Table 2 summarizes the air emissions to be expected during construction activities.The emissions estimates were calculated using EMFAC7G emissions factors.These emission factors are approved by the California Air Resources Board (CARB)for planning purposes.Attachment A of the document includes air emissions calculation worksheets.None of the estimated emissions would exceed the SCAQMD thresholds of significance.No significant impact to air resources would be anticipated during the repair of the pipeline.Nonetheless,the mitigation measures identified later in this section would further reduce air emissions impacts. TABLE 2:ESTIMATED AIR EMISSIONS DURING CONSTRUCTION TOTAL EMISSIONS Air Pollutant lbs/day Carbon Monoxide (CO)9.45 Reactive Organic Compounds (ROC)6.20 Nitrogen Oxides (NO~)53.81 Particulates (PM10)*1.55 Source:Emission factors from EMFAC7G,2001 Summer. slncludrs PM10 emissions for grading of 55 lbs/acre/day from Table 9-2 of the CEQA Handbook Assumes 2 diesel front-end loaders,I trencher operating an average of 6 hours per day.Assumes 88 trucks hauling 1,800 cubic yards of soil to Treatment Plant No.2 and back within the 72-week construction period.Assumes 10 construction employees at 30-mile round-trip commute. 23 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial Study/Mitigated Negative Declaration D.Expose sensitive receptors to substantial pollutant concentrations? Less than Significant Impact with Mitigation Incorporated. The SCAQMD defines sensitive receptors as residential areas,schools,playgrounds,health care facilities,day care facilities,and athletic fields.Residential areas exist within 20 feet of the new pump station site.In addition,Newport Beach Grammar School and two churches are located within 50 feet of the existing 14th Street Pump Station.The project would not violate SCAQMD thresholds of significance for air emissions.The following mitigation measures are recommended to reduce potential impacts to local residences. •Construction equipment will be shut off to reduce idling when not in direct use.Diesel engines,motors,or equipment shall be located as far away as possible from existing residential areas. •Stationary and mobile equipment shall be placed as far from the residential areas and schools as possible within the construction easement and new station site. •The contractor shall notify residences on West Balboa Street and the Newport Beach Grammar School by posting notices along West Balboa Boulevard of planned construction activities at least one week in advance.The notification shall include a planned schedule and contact information. Short-term construction activities are not anticipated to significantly impact local sensitive receptors. E.Create objectionable odors affecting substantial number of people? Less than Significant Impact. The project would replace a sewage pump station.The new facility would operate similar to the existing facility.OCSD maintains a system-wide odor control program that includes periodically adding odor control chemicals to the certain sewer trunks.The proposed project would not modify existing conditions with respect to the odor control program.Operations at this site would not change from existing operations.During construction,temporary odors could be released when making connections to the existing sewer.These impacts would be short term occurring over a period of several hours and would be less than significant. IV BIOLOGICAL RESOURCES A.Have a substantial adverse effect,either directly or through habitat modifications,on any species identified as a candidate,sensitive,or special-status species in local or regional plans,policies,or regulations,or by the California Department of Fish and Game or U.S.Fish and Wildlife Service? B.Have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans,policies,regulations or by the California Department of Fish and Game or U.S.Fish and Wildlife Service? C.Have a substantial adverse effect on federally protected wetlands as defined by Section 404 of the Clean Water Act (including,but not limited to,marsh,vernal pool,coastal, etc.)through direct removal,filling,hydrological interruption,or other means? 24 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial Study/Mitigated Negative Declaration D.Interfere substantially with the movement of any native resident or migratory fish or wildlife corridors,or impede the use of native wildlife nursery sites? E.Conflict with any local policies or ordinances protecting biological resources,such as a tree preservation policy or ordinance? F.Conflict with the provisions of an adopted Habitat Conservation Plan,Natural Conservation Community Plan,or other approved local,regional,or state habitat conservation plan? No Impact The proposed new location for the 14th Street pump station is a cleared vacant lot 150 south of Newport Bay.The lot supports minimal weedy invasive plant species and two ornamental trees. The lot is surrounded by urban development to the east and west. The closest ecological area to the project site is Newport Bay.The project site is located on an urbanized peninsula of Lower Newport Bay.Upper Newport Bay is designated as an Ecological Reserve,but Lower Newport Bay includes several marinas.Upper Newport Bay is located approximately two miles from the project Site. The project site does not support any native habitat and would therefore have no impact on any sensitive habitats,species and would not interfere with the migration or movement of wildlife.In addition,the project site does not support any riparian or federally protected wetlands and is located outside of the planning area of the Orange County Natural Community Conservation Plan &Habitat Conservation Plan (NCCP/HCP,County of Orange Environmental Management Agency,1996).The proposed project would not conflict with any other local conservation plan or preservation policy,therefore,no impacts are anticipated and no mitigation measures are required. V.CULTURAL RESOURCES A.Cause a substantial adverse change in the significance of a historical resource as defined in §15064.5? Less than Significant Impact The project would not cause substantial adverse impacts to any known historical resources. Though built in 1945,the existing pump station and trunk sewer are not unique nor the oldest in operation within the OCSD trunk sewer system.It is likely that the 1989 refurbishment destroyed or altered any potentially significant features of the trunk sewer and pump station.The replacement is considered a less than significant impact and no mitigation measures are required. B.Cause a substantial adverse change in the significance of a unique archaeological resource pursuant to §15064.5? C.Directly or indirectly destroy a unique paleontological resource or site or unique geologic feature? D.Disturb any human remains,including those interred outside of formal cemeteries? Less than Significant Impact with Mitigation Incorporation 25 Orange County Sanitation District Rehabilitation of the I4~Street Pump Station Initial StudyfMitigated Negative Declaration There are no known archaeological or paleontological resources on the project site.No religious or sacred uses are known to have occurred on the project site.Since development will be taking place in an area previously disturbed by development,there is an unlikely potential that cultural resources will be discovered.However,the potential for locating paleontological materials is unknown,since the project will involve excavation of up to 27 feet below ground surface. Mitigation measures are required in the event archaeological and/or paleontological resources are encountered.Implementation of the following measure would reduce this impact to a less than significant level. •In the event cultural or paleontological materials are discovered during excavation activities,all work in that area shall cease until a qualified archaeologist and/or paleontologist examines the resources and provides recommendations for further assessment of the site including collection and curation tasks. VI.GEOLOGY AND SOILS A.Expose people or structures to potential substantial adverse effects,including the risk of loss,injury,or death invotving: 1)Rupture of a known earthquake fault,as delineated on the most recent Aiquist-Priolo Earthquake Fault Zoning Map issued by the State Geologist for the area or based on other substantial evidence of a known fault?Refer to Division of Mines and Geology Special Publication 42. ii)Strong seismic ground shaking? iii)Seismic-related ground failure,including liquefaction? iv)Landslides? B.Result in substantial soil erosion or the loss of topsoil? Less than Significant Impact The 14th Street Pump Station replacement project site is not located within an Aiquist-Priolo Earthquake Fault Zon&.The nearest active faults to the project areas are the Newport-Inglewood, the Pelican Hill Fault,and offshore faults.Offshore traces of the Newport-Inglewood Fault are mapped within five miles of the project site to the south.Other major faults in the region include the Whittier Fault Zone and the Palos Verdes Fault.Seismic activity on any of these known faults within the region could cause considerable ground shaking in the project area. Geologic formations underlying the project site consist of Quaternary alluvium.Soils consist of native sand and silty sands.No artificial fill material was observed during geotechnical investigations conducted at the site in February 200 l~.The site is relatively flat,and no substantial erosion or landslide impact is expected as a result of the project. The proposed project,in and of itself would not expose people or structures to potential impacts pertaining to seismic groundshaking.Since earthquake related hazards cannot be avoided in the Southern California region,the project site may be subjected to ground motion which could affect ~California Division of Mines and Geology,Special Publication 42,1997 ‘~Associated Soils Engineering Inc.,Geotechnical Exploration Report for Proposed New Residence 1514 East Balboa Boulevard,Newport Beach,CA,February 26,2001 26 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial Study/Mitigated Negative Declaration structures.Unconsolidated soil types and shallow groundwater in the area create a high liquefaction potential,which would increase the potential for ground motion impacts.According to the California Division of Mines and Geology,the project site is within a liquefaction hazard area.However,a geotechnical study conducted for the site in May 2001 concluded that liquefaction would not pose significant impacts to the project5. The project would not construct habitable structures or place housing within a seismic hazard area.The project would upgrade existing facilities,providing more protection from seismic impacts than currently exists.Furthermore,the pump station would be designed to comply with the California Building Code (CBC)and the Uniform Building Code (UBC)in order to reduce the potential effects of seismic shaking that may occur in the vicinity of the project area.No impact would be anticipated.No mitigation is required. C.Be located on strata or soil that is unstable,or that would become unstable as a result of the project,and potentially result in on-or off-site landslide,lateral spreading, subsidence,liquefaction,or collapse? D.Be located on expansive soil,as defined in Table 18-1-B of the Uniform Building Code, creating substantial risks to life or property? Less than Significant Impact As discussed above,the potential for soil liquefaction in the project area is considered high due to the sandy soils and high water table.Geotechnical analysis conducted for the site in May 2001 concluded that the site would pose minimal liquefaction impacts.In addition,subsidence is not expected in the area and no expansive soils are anticipated.Compliance with the CBC and UBC would minimize any potential impact.No mitigation is required. E.Have soils incapable of adequately supporting the use of septic tanks or alternative wastewater disposal systems where sewers are not available for the disposal of wastewater? No Impact The proposed project would not involve the use of septic tanks.The nature of the proposed project does not necessitate the need for septic tanks.Therefore,no impacts are anticipated and no mitigation measures are required. VII.HAZARDS AND HAZARDOUS MATERIALS A.Create a significant hazard to the public or the environment through the routine transport,use,or disposal of hazardous materials? B.Create a significant hazard to the public or the environment through reasonably foreseeible upset and accident conditions involving the release of hazardous materials into the environment? ~Diaz Yourman &Associates,Geotechnical Investigation for Rehabilitation of 14th Street Pump Station, May 31,2001 27 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial StudyIMitigated Negative Declaration C.Emit hazardous emissions or handle hazardous or acutely hazardous materials, substances,or waste within one-quarter mile of an existing or proposed school? D.Be located on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code Section 65962.5 and,as a result,would it create a significant hazard to the public or the environment? E.For a project located within an airport land use plan or,where such a plan has not been adopted,within two miles of a public airport or public use airport,would the project result in a safety hazard for people residing or working in the project area? F.For a project within the vicinity of a private airstrip,would the project result in a safety hazard for people residing or working in the project area? C.Impair implementation of or physically interfere with an adopted emergency response plan or emergency evacuation plan? H.Expose people or structures to a significant risk of loss,injury or death involving wildiand fires,including where wildlands are adjacent to urbanized areas or where residences are intermixed with wildiands? No Impact Operation of the proposed project would not require the use or storage of significant quantities of hazardous materials (such as fuel and oil).Therefore,no accidental explosion or major release of hazardous materials is likely to occur. In addition,the project site is not located within the immediate vicinity of any airport or private airstrip.The nearest airport to the project site,John Wayne International Airport,is located five miles northeast of the project site.The proposed project would not result in a safety hazard for the people working in the project area or visiting the project site. In the event of an emergency,all emergency procedures would be implemented within local,state, and federal guidelines during construction and operation of the proposed project.The OCSD will contact emergency service providers and law enforcement of planned lane closures,as stipulated in OCSD’s 1999 Strategic Plan PEIR.No full street closures are anticipated to occur. The proposed project is not located adjacent to wildlands or near a substantial amount of dry brush that could expose people to wildfire risks. Implementation of the proposed project would not create impacts that would subject people or structures to hazardous chemicals or conditions.No impacts are anticipated and no mitigation measures being proposed. VIII.HYDROLOGY AND WATER QUALITY A.Violate any water quality standards or waste discharge requirements? Less than Significant Impact with Mitigation Incorporation The project would involve excavating a 12-foot deep trench for approximately 800 feet for placing new pipeline upstream of the existing pump station.Construction of the new pump station will require excavation of a an area of approximately 1,000 square feet to a depth of approximately 27 28 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial Study/Mitigated Negative Declaration feet.Operational discharge permits will not be necessary for the less than one-acre project,but a Notice of Intent for dewatering activities will be required.Excavation,trenching and construction activities would incorporate best management practices to minimize impacts to local receiving waters,including preventing construction runoff from entering storm drains unimpeded. The proposed excavation would be deeper than local groundwater levels and would require dewatering during construction.The infiltrating groundwater would be discharged to the storm drain,which empties into Newport Bay approximately 150 feet north of the site.The dewatering would comply with OCSD’s existing National Pollution Discharge Elimination System (NPDES) small-project dewatering permit issued by the Santa Aria Region,Regional Water Quality Control Board (RWQCB).6 Since the groundwater in the area is hydraulically connected to the Bay,no water quality impacts would be anticipated from the dewatering.Nonetheless,the effluent will be monitored as part of the project pursuant to the monitoring requirements of the NPDES permit.In addition,the contractor will be required to submit a Notice of Intent to the RWQCB prior to initiating discharges. •OCSD shall incorporate into contract specifications the requirement that the construction staging areas be designed to contain contaminants such as oil,grease,and fuel products so that they do not drain towards receiving waters or storm drain inlets.If heavy-duty construction equipment is stored overnight drip pans will be placed beneath the machinery engine block and hydraulic systems. B.Substantially deplete groundwater supplies or interfere substantially with groundwater recharge such that there should be a net deficit in aquifer volume or a lowering of the local groundwater table level (e.g.,the production rate of pre-existing nearby wells would drop to a level which would not support existing land uses or planned uses for which permits have been granted)? C.Substantially alter the existing drainage pattern of the site or area,including through the alteration of the course of a stream or river,in a manner which would result in substantial erosion or siltation on-or off-site? D.Substantially alter the existing drainage pattern of the site or area,including through the alteration of the course of a stream or river,or substantially increase the rate or amount of surface runoff in a manner which would result in flooding on-or off-site? E.Create or contribute runoff water which would exceed the capacity of existing or planned storm water drainage systems? F.Otherwise substantially degrade water quality? G.Place housing within a 100-year flood hazard area as mapped on a federal Flood Hazard Boundary or Flood Insurance Rate Map or other flood hazard delineation map? H.Place housing within a 100-year flood hazard area structures which would impede or redirect flood flows? 6 The National Pollution Discharge Elimination System (NPDES)permit No.CAG998001,Order No.98- 67,1998. 29 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial StudyfMitigated Negative Declaration No Impact The project would not require dewatering following completion of construction.The proposed project would not deplete or interfere with potable water sources.No impacts to groundwater are anticipated. The project would not alter the drainage patterns in the area.The vacant lot is currently flat. Storm water run off from the site will enter the storm drain on West Balboa Boulevard and discharge into Newport Bay.The project would involve a slight increase in impermeable surfaces within the vacant lot.The resulting increase in runoff would not be significant since the site is relatively small.The projected runoff from the site would not exceed capacity of the existing storm drain. The project site is not located within an area designated as 100-year or 500-year flood plain.7 The floor of the pump station building at ground level would be at least one foot above the 100-year floodplain.The subgrade portion of the building would be sealed and protected from flooding. Construction and operation activities associated with the proposed project would not subject people or structures to flooding impacts.No impacts are anticipated.No mitigation measures are required. I.Expose people or structures to a significant risk of loss,injury or death involving flooding,including flooding as a result of the failure of a levee or dam? J.Inundation of seiche,tsunami,or mudflow? Less than Significant Impact There is no potential impact resulting from seiche or mudflow.However,the project site is located near coastal waters and while a tsunami is possible,the chance of a tsunami occurring during an extremely high tide is very small.In the event in an unforeseen catastrophic event, OCSD would adhere to the Federal Emergency Contingency Plan and the Flood Protection Plan. The subgrade portion of the pump station would be sealed and protected from flooding.This impact is less than significant and no mitigation measures are required. IX.LAND USE AND PLANNING A.Physically divide an established community? No Impact The proposed project would conduct construction activities within the vicinity of the existing trunk sewer.A vacant lot would be purchased by OCSD and used to accommodate a public facility.The location was chosen due to the need for a pump station in the near vicinity based on the local topography.The proposed project would not result in any division of the community or significantly impact low income or minority resources.No mitigation measures are required. ~U.S.Federal Emergency Management Agency,Federal Emergency Management Agency National Flood Insurance Program Map No.06059C0054F.Revised January 3,1997.Washington D.C.:U.S. Federal Emergency Management Agency. 30 Orange County Sanitation District Rehabilitation of the l4~”Street Pump Station Initial Study/Mitigated Negative Declaration B.Conflict with any applicable land use plan,policy,or regulation of an agency with jurisdiction over the project (including,but not limited to the general plan,specific plan,local coastal program,or zoning ordinance)adopted for the purpose of avoiding or mitigating an environmental effect? Less than Significant Impact The project site is located in the City of Newport Beach.The prior owner,Mavericks Development &Holdings LLC,obtained a zone change for the property,which changed the property from a public utility zone to multi-family dwelling zone.Prior to implementing the project,OCSD would apply for a zone change back to a public utility zone.OCSD would obtain the property prior to implementation of the project.The zoning change would not conflict with prior or current surrounding land uses.Therefore,a less than significant impact is anticipated and no mitigation measures are required. C.Conflict with any applicable habitat conservation plan or natural communities’ conservation plan? No Impact The proposed relocation of the 1 4th Street Pump Station represents a continuation of existing use in the area.The proposed project would not conflict with any habitat conservation plan or natural communities’conservation plan.Therefore,the proposed project would not pose an impact and no mitigation measures are required. X.MINERAL RESOURCES A.Result in the loss of availability of a known mineral resource that would be of value to the region and the residents of the state? B.Result in the loss of availability of a locally-important mineral resource recovery site delineated on a local general plan,specific plan,or other land use plan? No Impact The proposed project would not result in the loss of availability of any mineral resource that would be of future value8 therefore,there is no potential for impacts.No mitigation measures are required. XI.NOISE A.Exposure of persons to or generation of noise levels in excess of standards established in the local general plan or noise ordinance,or applicable standards of other agencies? B.Exposure of persons to or generation of excessive groundborne vibration or groundborne noise levels? 8 Orange County General Plan,Resources Element,1995 31 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial StudyfMitigated Negative Declaration D.A substantial temporary or periodic increase in ambient noise levels in the project vicinity above levels existing without the project? Less than Significant Impact with Mitigation Incorporation Construction activities associated with the project would generate short-term noise.Local sensitive receptors include a three-story residential apartment building,two churches,and an elementary school.The Newport Beach Municipal Code (2001)provides special provisions to avoid construction noise impacts that are applicable to anticipated project activities. “Weekdays and Saturdays.No person shall,while engaged in construction,remodeling,digging,grading,demolition,painting, plastering or any other related building activity,operate any tool, equipment or machine in a manner which produces loud noise that disturbs,or could disturb,a person of normal sensitivity who works or resides in the vicinity,on any weekday except betwecn the hours of seven a.m.and six-thirty p.m.,nor on any Saturday except between the hours of eight a.m.and six p.m.” The following mitigation measures would ensure that noise generated from the proposed project would reduce the impact to less than significant levels. •Construction and pipe installation activities in the City of Newport Beach,shall be limited to the hours of 7:00 a.m.to 6:30 p.m.,Monday through Friday. •At least one week prior to construction,local residences and the Newport Beach Grammar School shall be notified of planned construction activities.The notification shall include a planned schedule and contact information. C.A substantial permanent increase in ambient noise levels in the project vicinity above levels existing without the project? Less than Significant Impact The project would not subject people to substantial permanent increases in ambient noise levels in the project vicinity above levels existing without the project.The pump station would be insulated to comply with ambient noise standards set by the city of Newport Beach’s General Plan.A less than significant impact is anticipated. E.For a projectlocated within an airport land use plan or,where such a plan has not been adopted,within two miles of a public airport of public use airport,would the project expose people residing or working in the project area to excessive noise levels? F.For a project within the vicinity of a private airstrip,would the project expose people residing or working in the project area to excessive noise levels? No Impact 32 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial Study/Mitigated Negative Declaration The project would not subject people to excessive noise or be located within two miles of an airport.No impacts are anticipated and no mitigation measures are required. XII.POPULATION AND HOUSING A.Induce substantial population growth in an area,either directly (for example,by proposing new homes and businesses)or indirectly (for example,through extension of roads or other infrastructure)? B.Displace substantial numbers of existing housing,necessitating the construction of replacement housing elsewhere? C.Displace substantial numbers of people necessitating the construction of replacement housing elsewhere? No Impact The proposed project would relocate an existing pump station and extend a gravity pipeline.No housing would be constructed,destroyed,or replaced as a result of the project.No impact is anticipated and no mitigation measures are required. XIII.PUBLIC SERVICES A.Would the project result in substantial adverse physical impacts associated with the provision of new or physically altered governmental facilities,need for new or physically altered governmental facilities,the construction of which could cause significant environmental impacts,in order to maintain acceptable service ratios, response times,or other performance objectives for any of the public services: Fire protection? Police protection? Schools? Parks? Other public facilities? Less Than Significant Impact The project would relocate an existing facility and extend a gravity pipeline.No impacts to fire or police services are anticipated.Emergency access will be maintained at all times (see Transportation Section).Construction would take place adjacent to Newport Beach Grammar School but would be temporary and is not anticipated to impact any public services used by the school.Construction activities would take place approximately 650 feet from the school.No impacts are anticipated and no mitigation measures are required. XIV RECREATION 33 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial Study/Mitigated Negative Declaration A.Would the project increase the use of existing neighborhood and regional parks or other recreational facilities such that substantial physical deterioration of the facility would occur or be accelerated? B.Does the project include recreational facilities or require the construction or expansion of recreational facilities,which might have an adverse physical effect on the environment? Less than Significant The proposed project would not increase demand for neighborhood or regional parks.No negative impacts to recreation are anticipated.The public beach,harbor,and park are located in close proximity to the proposed project site.However,construction activities would not significantly impede access to these areas,and no full street closures are anticipated.One lane of traffic in each direction (one eastbound and westbound lane)will be kept open through the duration of the construction activities.Due to the temporaly nature of the project,this is considered a less than significant impact and no mitigation measures are required. XV TRANSPORTATION /TRAFFIC A.Cause an increase in traffic,which is substantial in relation to the existing traffic load and capacity of the street system (i.e.,result in a substantial increase in either the number of vehicle trips,the volume-to-capacity ratio on roads,or congestion at intersections)? B.Exceed,either individually or cumulatively,a level of service standard established by the county congestion management agency for designated roads or highways? Less than Significant with Mitigation Incorporation Implementation of the project would not result in an increase in traffic trips on West Balboa Boulevard,since the existing facility is being rebuilt two blocks away on the same street.The project area is mostly urban in character,with some residential uses.A bike route is located along the public beach away from the project location and will not be impacted by the project.The Orange County Transportation Authority operates a bus route (Route 71)that traverses West Balboa Boulevard.Traffic on the local streets is not expected to be operating at unacceptable levels during morning and evening peak hours.Construction activities would add short-term traffic to the area.As part of the project,the contractor would obtain an encroachment permit from the city of Newport Beach.The encroachment permit would include a traffic control plan to be implemented during the work conducted within the street.One lane of traffic in each direction will be kept open at all times and no full street closures are anticipated.Traffic on West Balboa Boulevard and 14th Street may experience delays due to demolition of the existing pump station. The following mitigation measure would reduce this short-term impact to less than significant levels. •OCSD shall notify Newport Beach Grammar School of any lane closures that may impact access to the school at least one week prior to demolition of the 1 4th Street Pump Station.The Contractor shall provide for a crossing guard and traffic police at the intersection of I 4th Street and West Balboa Boulevard to ensure the safety of elementary 34 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial Study/Mitigated Negative Declaration •school children arriving and departing from school.Implementation would reduce this short-term impact to a less than significant level. C.Result in a change in air traffic patterns,including either an increase in traffic levels or a change in location that results in substantial safety risks? D.Substantially increase hazards to a design feature (e.g.,sharp curves or dangerous intersections)or incompatible uses (e.g.,farm equipment)? No Impact The project would not alter air traffic patterns.The project would not alter the current roadway designs.No impact is expected.No mitigation measures are required. E.Result in inadequate emergency access? Less than Significant Impact During construction,traffic lanes on West Balboa Boulevard overlying the gravity sewer would be closed.Traffic would be disrupted along West Balboa Boulevard between 14th Street through 16th Street.West Balboa Boulevard is a four-lane street traversing east to west and consisting of two lanes directing each way.One eastbound lane and one westbound lane would be open at all times during project activities and through intersections.No state-owned streets would be impacted that would require a permit from Caltrans.As part of the project,the contractor would obtain an encroachment permit from the city of Newport Beach.The encroachment permit would include a traffic control plan to be implemented during the work conducted within the street.No full street closures are anticipated.No significant impacts to traffic would be anticipated. F.Result in inadequate parking capacity? Less than Significant with Mitigation Incorporation The proposed trenching of the pipeline would temporarily impact approximately twelve metered parking spaces.Metered parking is provided along the median that traverses east to west along West Balboa Boulevard.Since trenching will take place along the inside lane of the eastbound side of the road,access to these spaces will be impeded by construction activities for approximately four weeks.Sensitive receptors for this issue include a nearby elementary school, two churches,the public beach,and Los Arenas Park.These facilities utilize metered parking.In order to reduce this impact to a less than significant level,the following mitigation measure is required. •OCSD shall notify the elementary school and two chruches that parking may be impacted at least one week prior to trenching along West Balboa Boulevard. G.Conflict with adopted policies supporting alternative transportation (e.g.,bus turnouts, bicycle racks)? No Impact 35 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial Study/Mitigated Negative Declaration The project would not conflict with adopted City policies supporting alternative transportation. No impact is expected. XVI UTILITIES AND SERVICE SYSTEMS A.Exceed wastewater treatment requirements of the applicable Regional Water Quality Control Board? Less than Significant Impact Construction of the project would require dewatering the excavated areas.The dewatering would be conducted using a sump pump in the bottom of the excavated areas.The water would be discharged to the storm drain system that flows to the Newport Bay.The dewatering activities and discharge would comply with OCSD’s NPDES permit for small construction project dewatering activities,including the discharge monitoring and reporting requirements.Compliance with the NPDES permit would reduce this impact to a less than significant level. B.Require or result in the construction of new water or wastewater treatment facilities or expansion of existing facilities,the construction of which could cause significant environmental effects? C.Require or result in the construction of new storm water drainage facilities or expansion of existing facilities,the construction of which could cause significant environmental effects? D.Have sufficient water supplies available to serve the project from existing entitlements and resources,or are new or expanded entitlements needed? E.Result in a determination by the wastewater treatment provider,which serves or may serve the project that it has adequate capacity to serve the project’s projected demand in addition to the provider’s existing commitments? F.Be served by a landfill with sufficient permitted capacity to accommodate the project’s solid waste disposal needs? G.Comply with federal,state,and local statutes and regulations related to solid waste? No Impact The project involves replacing an existing pump station with a new pump station.The pump station will be moved to the new location to provide OCSD with easier access to the equipment. The assessment of the existing vault containing the equipment concluded that it could not be refurbished. The existing station does not have a potable water supply.However,the new Station will have a potable water Supply for washdown and landscaping purposes and will require OCSD to connect to the city of Newport Beach’s existing water line,located on Balboa Boulevard.The project would not construct new Storm drain facilities,require new water supplies or increased capacity at the treatment plant,or increase solid waste capacity needs.Therefore,the project would not adversely impact regional utilities. 36 Orange County Sanitation District Rehabilitation of the 14t)1 Street Pump Station Initial Study/Mitigated Negative Declaration XVII MANDATORY FINIMNGS OF SIGNIFICANCE A.Does the project have the potential to degrade the quality of the environment, substantially reduce the habitat of a fish or wildlife species,cause a fish or wildlife population to drop below self-sustaining levels,threaten to eliminate a plant or animal community,reduce the number or restrict the range of a rare or endangered plant or animal or eliminate important examples of the major periods of California history or prehistory? B.Does the project have impacts that are individually limited,but cumulatively considerable?(“Cumulative considerable”means that the incremental effects of a project are considerable when viewed in connection with the effects of past projects,the effects of other current projects,and the effects of probable future projects)? No Impact The project would replace an existing pump station at a new location.The new location does not support wildlife.No significant cultural resources are known to exist at the new location.No impact is expected. C.Does the project have environmental effects which will cause substantial adverse effects on human beings,either directly or indirectly? Less than significant Impact The project enhances the reliability of existing infrastructure.The identified mitigation measures would ensure that no significant adverse impacts to human beings would be associated with operation or construction. 37 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial StudyfMitigated Negative Declaration SECTION 4.0 SUMMARY OF MITIGATION MEASURES This section provides a summary of mitigation measures identified in the Initial Study. AESTHETICS •OCSD shall provide landscaping on the pump station property incorporating low water- use plants. •OCSD shall ensure that all permanent exterior lighting installed on the new project site is directed downward and oriented to insure that no light source is directly visible from neighboring residential areas.Motion sensor lighting shall be installed on the project site. This will lessen the amount of light used at any given time and will reduce this impact to a less than significant level. AIR QUALITY •Construction equipment will be shut off to reduce idling when not in direct use.Diesel engines,motors,or equipment shall be located as far away as possible from existing residential areas. •Stationary and mobile equipment shall be placed as far from the residential areas and schools as possible within the construction easement and new station site. •The contractor shall notify residences on West Balboa Street and the Newport Beach Grammar School by posting notices along West Balboa Boulevard of planned construction activities at least one week in advance.The notification shall include a planned schedule and contact information.Therefore,short-term construction activities would not significantly impact local sensitive receptors. CULTURAL RESOURCES •In the event cultural or paleontological materials are discovered during excavation activities,all work in that area shall cease until a qualified archaeologist and/or paleontologist examines the resources and provides recommendations for further assessment of the site including collection and curation tasks. HYDROLOGY AND WATER QUALITY •OCSD shall incorporate into contract specifications the requirement that the construction staging areas be designed to contain contaminants such as oil,grease,and fuel products so that they do not drain towards receiving waters or storm drain inlets.If heavy-duty construction equipment is stored overnight drip pans will be placed beneath the machinery engine block and hydraulic systems. 38 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial StudyfMitigated Negative Declaration NOISE •Construction and pipe installation activities in the city of Newport Beach,shall be limited to the hours of 7:00 a.m.to 6:30 p.m.,Monday through Friday. •At least one week prior to construction,local residences and the Newport Beach Grammar School shall be notified of planned construction activities.The notification shall include a planned schedule and contact information. TRANSPORTATION/TRAFFIC •OCSD shall notify Newport Beach Grammar School of any lane closures that may impact access to the school at least one week prior to demolition of the 14th Street Pump Station. The Contractor shall provide for a crossing guard and traffic police at the intersection of 14th Street and West Balboa Boulevard to ensure the safety of elementary school children arriving and departing from school.Implementation would reduce this short-term impact to a less than significant level. •OCSD shall notify the elementary school and two churches that parking may be impacted at least one week prior to trenchmg along West Balboa Boulevard. 39 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial StudyfMitigated Negative Declaration SECTION 5.0 REFERENCES Associated Soils Engineering Inc.,Geotechnical Exploration Report for Proposed New Residence 1514 East Balboa Boulevard,Newport Beach,CA.February 26,2001 California Department of Transportation (Caltrans),California Scenic Highway Program. Officially Designated State Scenic Highways,December 2000. California Division of Mines and Geology.Geologic Map of Cal~fornia:Santa Ana Sheet.1966. California Division of Mines and Geology.Maps ofKnown Active Fault Near-Source Zones in Cal~fornia andAdjacent Portions of Nevada.1998. California Division of Mines and Geology.Probabilistic Seismic Hazard Assessment for the State of Cal~fomia.1996. California Environmental Quality Act.CEQA Guidelines.2001 California Environmental Quality Act.Air Quality Handbook,SCAQMD.1993. California Regional Water Quality Control Board,Santa Ma Region,Order No.98-67,NPDES No.CAG99800 1,General Waste Discharge Requirements to Discharges to Surface Waters Which Pose an Insignificant (De Minimis)Threat to Water Quality,1998 City of Newport Beach.City of Newport Beach Municipal Code.2001 County of Orange.Orange County Code of Ordinances.2000 County of Orange Environmental Management Agency.1996 Natural Community Conservation Plan &Habitat Conservation Plan for the County of Orange,Central &Coast Subregion. July 17,1996. County of Orange Planning and Development Services Department.County of Orange General Plan.1998. Diaz Yourman &Associates.Geotechnical Investigation for Rehabilitation of 14’~Street Pump Station.May 31,2001 Division of Mines and Geology,Special Publication 42. Jennings,Charles.Fault Map of California.1988 The National Pollution Discharge Elimination System (NPDES)permit No.CAG99800 1,Order No.98-67,1998. 40 Orange County Sanitation District Rehabilitation of the 14th Street Pump Station Initial StudyfMitigated Negative Declaration Orange County Sanitation District.Orange County Sanitation District Strategic Plan Final Environmental Impact Report,1999 State of California,2001.Ca4fornia Environmental Quality Act,CEQA Guidelines.Amended, Chapter 1312,Statutes of 1976 and Chapter 1230,Statutes of 1994. Stadum,Carol J.A Student Guide to Orange County Fossils.Chapman College Press,Orange. 1973 Southern California Association of Governments,Regional Transportation Plan,2001 U.S.Federal Emergency Management Agency,Federal Emergency Management Agency National Flood insurance Program Map No.06059C0054F.Revised January 3,1997.Washington D.C.:U.S.Federal Emergency Management Agency. 41 Orange County Sanitation District Rehabilitation of the 14*h Street Pump Station Initial Study/Mitigated Negative Declaration