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HomeMy WebLinkAboutResolution 1992 - 0011RESOLUTION NO.92-11 CERTIFYING FINAL SUPPLEMENT NO.2 TO PROGRAM EIR FOR AMENDMENT NO.1 TO THE COLLECTION,TREATMENT AND DISPOSAL FACILITIES MASTER PLAN —1989 RE MEMORY LANE INTERCEPTOR,CONTRACT NO.2-30 (THE “MAKING CERTAIN FINDINGS RELATING TO SIGNIFICANT ENVIRONMENTAL EFFECTS IDENTIFIED IN SUPPLEMENT NO.2 TO PROGRAM EIR;ADOPTING A STATEMENT OF OVERRIDING CONSIDERATIONS;ADOPTING MITIGATION MEASURES AND MONITORING PLAN;AND AUTHORIZING THE FILING OF A NOTICE OF DETERMINATION RE SAID PROJECT A JOINT RESOLUTION OF THE BOARDS OF DIRECTORS OF COUNTY SANITATION DISTRICTS NOS.1 AND 2 OF ORANGE COUNTY,CALIFORNIA,CERTIFYING THE FINAL SUPPLEMENT NO.2 TO PROGRAM ENVIRONMENTAL IMPACT REPORT FOR AMENDMENT NO.1 TO THE COLLECTION,TREATMENT AND DISPOSAL FACILITIES MASTER PLAN -1989 RE MEMORY LANE INTERCEPTOR,CONTRACT NO.2-30 (THE “PROJECT”); MAKING CERTAIN FINDINGS RELATING TO SIGNIFICANT ENVIRONMENTAL EFFECTS IDENTIFIED IN SUPPLEMENT NO.2 TO PROGRAM EIR;ADOPTING A STATEMENT OF OVERRIDING CONSIDERATIONS;ADOPTING MITIGATION MEASURES AND MONITORING PLAN;AND AUTHORIZING THE FILING OF A NOTICE OF DETERMINATION RE SAID PROJECT WHEREAS,the Boards of Directors of County Sanitation Districts Nos.1 and 2 of Orange County,California (“Districts”),certified the Final Program Environmental Impact Report for Collection,Treatment and Disposal Facilities Master Plan (“EIR”)in July 1989;and, WHEREAS,the Districts are the Lead Agency for the preparation and consideration of environmental documents for the projects contained with the 1989 Collection,Treatment and Disposal Facilities Master Plan,pursuant to the California Environmental Quality Act of 1970,as amended,(“CEQA”),the State of California CEQA Guidelines and the Districts’CEQA procedures;and, WHEREAS,the Districts are presently considering the approval of ~roject,described as the Memory Lane Interceptor,Contract No.2-30 (the “Project”);and, WHEREAS,Districts have determined additional environmental studies ~re required before proceeding with the Project,described as Supplement No.2 (“Supplement”);and, WHEREAS,to assess the Project’s environmental impacts objectively, the Districts have caused to have prepared a Draft Supplement No.2 to Program Environmental Impact Report for Amendment No.1 to the Collection,Treatment and Disposal Facilities Master Plan (“Draft”)to assess the significant environmental impacts,mitigation measures,and alternatives associated with the Project;and, WHEREAS,the Districts have consulted with other public agencies and the general public,giving them an opportunity to coninent on the Draft as required by CEQA;and, WHEREAS,on December 11,1991,the Boards of Directors of the Districts held a duly-noticed public hearing to provide a further opportunity for the general public to cormient on and respond to the Draft;and, WHEREAS,the Districts have objectively evaluated the coments from public agencies and persons who reviewed the Draft;and WHEREAS,the conments and recomendations received on the Draft, either in full or in suninary,together with the Districts’responses to significant environmental concerns raised in the review and consultation process,have been included in the Final Supplement No.2 to Program Environmental Impact Report for Amendment No.1 to the Collection,Treatment and Cisposal Facilities Master Plan re Memory Lane Interceptor,Contract No.2—30, (°Supplement”);and, WHEREAS said Supplement has been presented to the members of the Eoards of Directors of the Districts for review and consideration prior to the final approval of,and comitment to,the Project. NOW,THEREFORE,THE Boards of Directors of County Sanitation Districts 1105.1 and 2 of Orange County,California, DO HEREBY RESOLVE,DETERMINE AND ORDER: Section 1 That the Boards of Directors do hereby certify that the inal Supplement No.2 to EIR has been completed in compliance with CEQA,the tate CEQA Guidelines,and the Districts’CEQA procedures,and that the Boards )f Directors have reviewed and considered the information contained in the Final 5upplement prior to approval of,or comitment to,the Project.The Final ~upp1ement No.2 consists of the following two documents: A.“Draft Supplement No.2 to Program Environmental Impact Report on ~ollection,Treatment and Disposal Facilities Master Plan addressing Memory Lane Interceptor,Project 2—30”,dated November 1991;and, B.“Final Supplement No.2 to Program Environmental Impact Report on Collection,Treatment and Disposal Facilities Master Plan addressing Memory Lane Interceptor,Project 2—30,dated February 1992. Section 2 That the Draft Supplement No.2 and the Final Supplement No. 2 to •the Program EIR have fully and adequately addressed all expressed environmental concerns resulting from the proposed construction of the Project. Section 3 That the proposed Project will create a number of significant or potentially significant environmental effects.These impacts are identified •n Table 1 of the Draft Supplement No.2 to Final Program EIR,that are appended 1:0 this Resolution as Attachment A. Section 4 That the Boards of Directors of DISTRICTS do further find :hat changes or alterations have been required in,or incorporated into,the proposed Project which avoid or substantially lessen significant environmental ‘affects,as identified in the Final Supplement No.2 to Final Program EIR. Section 5 Significant impacts identified in the Final Supplement No.2 ~o Final Program EIR will be mitigated to less-than—significant levels by the )ISTRICTS as specified in Attachment A to this Resolution. Section 6 The DISTRICTS will implement mitigation measures for impacts identified,as less than significant in the Final Supplement No.2 as specified in Attachment A to this Resolution. Section 7 The DISTRICTS hereby adopt the following monitoring and reporting program to ensure implementation of the mitigation measures described in Sections 5 and 6. A.The Director of Engineering shall be the Environmental Monitor responsible for coordinating mitigation monitoring and reporting activities. B.The Environmental Monitor shall review the design of the Project and certify that the facility design complies with Final Supplement No.2 or reconinend design modifications necessary to achieve such compliance.In addition,prior to the DISTRICTS obtaining bids for construction,the Environmental Monitor shall review the bid documents and certify compliance with applicable mitigation measures. C.The Director of Engineering shall assign staff responsibilities to certify compliance with mitigation measures during and after construction of the Project. Section 8 The Boards of Directors of County Sanitation Districts Nos.1 and 2 of Orange County,California,have balanced the benefits of the Project against its unavoidable environmental risks in detemining whether to approve the Project.The Boards hereby find that the occurrence of the unavoidable significant environmental effects identified in the Final Supplement No.2 to the Final Program EIR and set forth in Attachment A attached hereto is acceptable for the following reason: A.The Project is necessary to provide sewer collection facilities to serve land use changes approved by the Cities of Santa Ana and Orange. Section 9 The Project described in Final Supplement No.2 is the preferred alternative and is hereby approved. Section 10 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 DISTRICTS’CEQA procedures. PASSED AND ADOPTED AT AN ADJOURNED REGULAR MEETING HELD FEBRUARY 19,1992. ATTACHMENT A Table 1 SUMMARY OF ENVIRONMENTAL IMPACTS ~D MITIGATION MEASURES Memory Lane Interceptor Sewer Soils/Geology/Seismic Impacts A estimated 58,000 cubic yard of material will have to be excavated to accomrn’~odate the new pipeline to depths of twenty feet below ground.Of this total,about 33,000 will be backfilled and the remainder removed to another location for use as fill. It is contemplated that the majority of construction activities would occur during dry periods and consequently no significant impacts from erosion and sedimentation would occur. Street pavement and surfaces will have to be removed for instal~.ation of the pipe and replacement will be necessary. No unavoidable adverse impacts on geological resources are anticipated.. Geology/Soils/Seizmicity Mitigation Measures The pipeline project,(Contract No.2-30)will be under construction for a time frame of approximately nine months.The project is being scheduled to avoid conflicts with other major construction projects (1-5 widening and Owens Drive widening)in the area which will result in major detours of traffic. Close coordination with the Cities of Orange and Santa Ana has occurred to develop the proposed project schedule,minimize adverse impacts on the two communities and to avoid cumulative effects from construction. In order to minimize impacts,the intersections of Bristol Street/Memory Lane, Flower Street/Memory Lane,and Main Street/Owens will be constructed using the jacking method,as will the section crossing underneath the Santa Ana Freeway. The intersection of Broadway/Owens Drive will either be jacked or constructed at night to minimize traffic impacts,particularly to Main Place.The remainder of the excavation for the pipeline will be constructed using the open trench method. The specifications will require that all excavations be performed, protected,and supported,as required for safety and in a manner set forth in the CAL/OSHA Construction Safety Orders.The contractor will be required to obtain a permit from the applicable agency as required by California Labor Code and prepare and submit to the District a detailed plan showing the design of &~oring,bracing,and sloping or other provisions to be made for worker protection.The project geotechnical investigation will include soils-related design criteria for use in preparation of and/or reviewing the plan.This will include such information as safe construction slopes,lateral earth pressures for sheeting and shoring design,and the effects of adjacent surcharge loads. Excavation of an open trench will be limited to 500 feet or a distance necessary to accommodate pipe installation in a single day.This distance will be collective in length and will include open excavation for pipeline and appurtenances and backfilling which has not been temporarily resurfaced. ATTACHMENT A Table 1-1 (Continued) SUMMARY OF ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES Memory Lane Interceptor Sewer Geology/Soils/Seismicity Mitigation Measures (Continued) The contractor will be required to control grading and stockpiling of excavated material in a manner to prevent water from running into excavations. Obstructions of surface drainage will be avoided and means provided for storm waters or surface drains to maintain uninterrupted service. A geotechnical investigation currently being undertaken by the Engineer will identify those areas where groundwater is observed in borings and will suggest methods of dewatering which might be employed. The specifications will require that all excavations be properly backfilled and compacted.Compaction will be obtained by mechanical means,water jetting,hand tamping,or a combination of these methods. During the course of construction,all asphalt or concrete removed will be either hauled to an approved disposal site,or as appropriate,recycled and used for construction elsewhere.This will be the responsibility of the contractor.• Any asphalt pavement removed for trenching •operations shall be replaced in compliance with the requirements of the agencies having jurisdiction. Construction techniques will require that pipelines are constructed appropriately to avoid the impacts of anticipated seismic events. Hydrology and Water Quality Impacts The proposed pipeline will cross the Santa Ana River at the Riverview Golf Course and will connect to the Santa Ana River Interceptor located in the County of Orange access road along the west levee.An encroachment permit for construction in the River will be required from the County of Orange. The impact of the proposed project on the flood control channels is limited to the construction period.The flood control facility under Owens Drive will be considered in design and the widening project for Owens Drive.The excavation activities in the Santa Ana River will occur during the dry season subject to approvals from the County of Orange and Corps of Engineers and will not adversely i.pact flood control operations. Construction will require site dewatering for installation of the new pipeline. No unavoidable adverse impacts on water resources are anticipated. Table 1-1 (Continued) SUIIMARY OF ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES Memory Lane Interceptor Sewer Water Quality Mitigation Measures The contractor will also be required to comply with the provisions of the District’s NPDES permit in disposing of water from the construction area.Proper dewatering procedures as specified in a blanket NPDES Permit (No. CA 0106119,Order No.85-83)for dewatering issued by the Regional Water Quality Control Board,Santa Ana Region (RWQCB,SAR)to the Sanitation Districts.This order will be made a part of the Plans and Specifications. The Districts must also comply with all measures identified by the County or COE for the work that must be done in the Santa Aria River channel.Close coordination must be done to assure that the project does not interfere with the Corps major project to modify the SAR channel.Upon construction completion the river bed will be ‘returned to its existing configuration thus restoring normal operating capacity.Any modifications which may be appropriate to be in conformity with the new plans and requirements of the COE and County EMA will be made. Construction will occur during the dry season and work will be stopped once wet weather begins.All work which could potentially temporarily impair the river or its levee will be completed by October 15th and be subject to approval of the COE and EMA. A detailed dewatering plan will be developed and implementation and compliance made a part of the construction contract. Biotic Impacts The majority of the proposed sewer line route will be located in an existing surface Street easement.As such,no impact to existing biota will occur. There is no section of the proposed pipeline that has been extensively planted and that will require removal of the vegetation other than the area where the pipeline crosses the golf course. The alignment of the pipeline through the Santa Ana River will likely cause the removal of one large Eucalyptus tree and there may be impacts on a stand of three small pine trees.There will be disturbance of the Riverview Golf Course while construction takes place in the Santa Ana River channel.The 15th green is adjacent to the project on the east side of the River,and the 13th tee is adjacent to the project on the west side of the River.Both the green and the tee will be protected from disturbance during construction. No unavoidable adverse impacts as to biota issues are anticipated. Biotic Mitigation Measures Any trees and large shrubs removed as a result of the proposed project will be replaced on a one-to-one basis. The golf green and tee will be protected.Any fairway disturbance will be. returned to its original state following construction. Table 1-1 SUMMARY OF ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES Memory Lane Interceptor Sewer Noise Impacts The implementation of the project will result in the generation of short-term noise attributable to the alignment construction activities.Long-term noise will be associated with future sewer maintenance/repair activities which is considered a minor if not negligible activity. Construction noise levels will exceed background noise level by a considerable margin.The exact degree of impact on the surrounding community will depend upon the type of equipment used and hours of operation.However,noise levels associated with the construction are expected to range from 70 .dB(A)to 105 dB(A)within 50 feet of the equipment being used. A portion of the equipment working at this site will be within 100 to 150 feet of some residences.Therefore,intermittent noise levels as high as 90 dB(A)could be expected at these homes.Noise levels of this magnitude would be considered an annoyance.Therefore,it is likely that without special precautions and mitigation,construction at this site may at times increase local noise levels to unacceptable levels. Cumulative impacts from short-term construction noise impacts will be those related to the La Veta Avenue and 1-5 widening projects as well as the planned development projects in the area planned by the Cities of Orange and Santa Ana which are expected to extend over a three year period.In comparison to these projects and their magnitude,the Sanitation Districts’project will be of a short-term and temporary nature. The completed project will not generate operational noise other than the occasional need to drive service vehiclesalong the access road to inspect the sewers via access manholes or to perform routine maintenance such as line cleaning. Unavoidable adverse impacts from noise generation can be anticipated even after the implementation of mitigation measures due to the close proximity to residential areas and the nature of the equipment used. Noise Mitigation Measures All construction equipment shall be stored on or near the area under constructior.to eliminate daily heavy duty truck trips on vicinity roadways. All construction equipment,stationary or mobile,shall be equipped with properly operating and maintained.mufflers,and all engines shall be kept in proper tune. Construction activities shall be restricted to the hours of 7 A.M.-9 P.M.on weekdays and 9 A.M.-6 P.M.on Saturdays,as promulgated by the applicable local jurisdiction,also no construction shall be permitted outside of these hours or on Sundays or Federal holidays,unless a waiver has been granted by Project Manager.Any waiver shall take into account the impact upon the community. Table 1-I ST.ThfMA.RY OF ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES Memory Lane Interceptor Sewer Noise Mitigation Measures (Continued) Construction activities should not commence before 7:00 a.m.nor extend past 9:00 p.m.or the hours stipulated by local ordinances whichever are most. restrictive.Noise levels should not exceed 65 dB(A)at the nearest residential property line as a result of construction activity except for short periods of time as provided in local ordinances.Noise levels should be monitored during construction to assure ordinance compliance and worker safety. On-site noise monitoring equipment will be used by the construction managers to assure compliance with the contract provisions which are specified. Coordination with the City of Orange and the hospitals will be undertaken to minimize the noise effects on those facilities. Land Use Impacts The project will result in the removal and replacement of only a minor amount of vegetation and pavement in order to accomplish the construction of the facilities.Due to the complete urbanization of the surrounding area and the previous disturbance of the project sites,no significant long term impacts are expected.The proposed use will be compatible with the other existing uses in the area since the pipelines will be beneath the ground surface. At the Santa Ana River the project will disrupt two north/south cart paths on the east and west sides of the golf course.The project will also impact the Santa Ana River Trail bike path. Access to residential developments along Memory Lane will be limited and,at certain times during the day,impassable. Access to the alley east of Flower at the end of Memory Lane adjacent to the Santa Ana Freeway will be blocked during construction of that portion of the Project. Short term access impacts will occur to commercial developments along Owens Drive during construction.Access to the parking at Lincoln Town Center will be disrupted and the parking area for Polly’s Pies from Owens Drive will be removed.The closure of Owens Drive east of Main Street will be inconvenient for those people utilizing the Santiago Park facilities and for gaining access to the commercial developments along Parker south of Town and Country Road. Project impacts primarily occur during thc construction phase (;lasting nne months)and therefore are temporary.It is expected that the pipe can be installed at a rate of about 100-200 feet per day,so any one area will not be affected for any longer than a few day by the construction equipment.Truck traffic may be present in a given area for weeks. In order to proceed along the proposed route encroachment permits or easement rights will be required from several public agencies. Table 1-1 SUMMARY OF ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES Memory Lane Interceptor Sewer There are no easement purchases on the project.Encroachment permits will be required from the County of Orange Environmental Management Agency for crossing the Santa Ana River and from CalTrans for the crossings under the Santa Ana (1-5)and Garden Grove (1-22)freeways.Construction permits will~ be required by the Cities of Orange and Santa Aria for roadway work.A Section 404 permit will be required by the U.S.Army Corps of Engineers and a Section 1601 permit will be required by the California Department of Fish and Game for work in the Santa Ana River. A utilities easement and or plan review by the appropriate utilities will be required prior to construct and coordination will be maintained as necessary during construction to protect existing utility services. The proposed,project does not create effects which are significant as to land uses..It is not expected that securing the required easements and approvals will delay the project. The alley east of Flower at the end of Memory Lane will be closed to all access to the five garages on the alley during construction of that portion of the project.Access to the houses which face Memory Lane and Jonquil Road will be possible from those streets. Land Use Mitigation Measures No easements will be obtained for the project.Certain Public right-of-way will be obtained from the appropriate agencies.All permits will be approved prior to construction of the project. Every effort will be made to maintain limited access to properties along the project route.The major intersections of Bristol Street/Memory Lane,Flower Street/Memory Lane,Owens Drive/Main Street and under the Santa Ana Freeway will be jacked or constructed at’night as determined at a later date following discussions with the District,the contractor and the requirements of the City of Santa Ana.The portion of the project from the 1-5 to Main Street is scheduled for construction during September to avoid interference with the holiday shopping season.While the initial project report anticipates the closure of Owens Drive at Main Street,an effort will be made to maintain limited access to the Lincoln Town Center. Santiago Pa k lawn bowling facilities and the Day Care Center will be accessible from Lowell during the closure of Owens Drive. Transportation and Circulation Impacts , Traffic impacts from the proposed project,while disruptive during construction,will be of a temporary nature.To avoid traffic disruptions, it is planned to jack the sewer pipeline under key intersections and roadways. A Traffic Control Plan has been developed for the project and traffic impacts are more clearly defined therein. Table 1-1 SUMMARY OF ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES Memory Lane Interceptor Sewer Transportation and Circulation Impacts (continued) The construction is being phased to minimize disruption and to accommodate construction of the Main Street traffic improvements by the Cities of Santa Ana and Orange.Phased construction would be the jacking under Main Street and is anticipated from approximately May to June,1992.Phase 2, construction from Main Street to Town and Country in Owens Drive and Phase 3, the 1-5 Freeway bore would be constructed simultaneously from June through mid-July 1992.Phase 4 construction from Town and Country to Batavia is sche4uled from mid-July through early September 1992.Construction of the Phase 5 section from the 1-5 Freeway to Main Street is scheduled for the month of September 1992 and on a separate heading,the Phase 6 construction from the Santa Ana River to the 1-5 Freeway is scheduled from mid-August 1992 through the end of February,1993.Following immediately behind the construction of the interceptor will be the City of Santa Ana Owens Street Improvements from mid-July 1992 through mid-October 1992 and the Main Street Bridge closure by Cal Trans from mid-October 1992 through the end of February 1993. Construction activities are expected to interfere with the normal flow of traffic on local surface streets. There are two schools in the area which will not be adversely impacted. Construction related activities could create unexpected hazardous situations. Construction of the se~age conveyance system will necessitate applying for an encroachment permit in order to allow for the tunneling under 1-5,the open cut under the street below the Garden Grove Freeway overpass on Owens Drive and the Santa Ana River from Caltrans and the COE and EMA respectively. Impact on Orange County Transportation should be extremely minimal.The major bus lines in the area travel along Main Street,crossing the pipeline route at Owens,an area which the project is tunneling under.These include Bus Numbers 51,53,55,and 307A.Two other bus lines,Bus Numbers 47 and 49 which are scheduled every 30 minutes during the peak hours of 6AM to 9AM and 3PM to 6PM Monday through Friday,travel along Memory Lane from the Santa Ana River bed to Bristol.The plan for this area should leave a lane open in each direction. Constructior activities could potentially have a significant adverse effect businesses .n the project area.However,implementation of the proposed mitigation measures would reduce the impact to a level of insignificance. Impact will be reduced dur to their short-term nature and efforts to maintain ingress/egress to the parking lots most of the time,and scheduling construction to occur during periods when the parking lots are least used. Every effort will be made to maintain limited access to properties along the project route.The major intersections of Bristol Street/Memory Lane,Flower Street/Memory Lane,Owens Drive/Main Str~et and under the Santa Ana Freeway will be jacked or constructed at night as determined at a later date following discussions with the District,the contractor and the requirements of the City of Santa Ana. Table 1-1 SU}IMARY OF ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES Memory Lane Interceptor Sewer Transportation and Circulation Impacts (continued) The portion of the project from the 1-5 to Main Street is scheduled for construction during September to avoid interference with the holiday shopping season.While the initial project report anticipates the closure of Owens Drive at Main Street,an effort will be made to maintain limited access to the Lincoln Town Center. Santiago Park lawn bowling facilities and the Day Care Center will be accessible from Lowell during the closure of Owens Drive. Westwood and.Lowell can be closed during construction in intersections since alternate access exists Owens 1-5 to Broadway parking lot driveways adjacent to work zone may be closed since alternate access exists. Main at Owens Intersection jacking operations will not affect existing traffic patterns to a measurable degree. Transportation Mitigation Measures The following mitigation measures will be implemented during construction: Construction signing used for the handling of traffic for public convenience shall conform to the latest edition of the “Work Area Traffic Control Handbook”(WATCH)published by Building News,Inc.and the Caltrans “Manual of Warning Signs,Lights,and Devices for Use in the Performance of WorK upon Highways,”which will be included in the specifications. In addition,the signing,barricading,and diverting of traffic shall be subject to the approval of the authority with jurisdiction over the street (Cities of Santa Ana and Orange).The contractor will be required to maintain a 24-hour emergency service to remove,install, relocate,and maintain warning devices. In addition,the following mitigation measures are recommended: Signs shall be posted in advance of the construction period to warn motorists of the beginning date of the construction period.These signs shall be posted on the affe ted arterial to advise motorists to use alternate routes. A plan shall be prepared to safeguard school children at the school zones and school crossings as shown on the Safe Route Map (Figures — and _).Temporary school guards (if not available at the affected crossings),flashing signals and other devices shall be considered at locations along the sidewalks or Street crossings where the construction activities and pavement conditions might cause new safety hazards to school age children.The school district should be consulted in the preparation of contingency measures to protect school children. Affected property owners and business shall be sufficiently notified in advance of construction and attempts will be made to minimize impacts. Table 1-1 SiDIMARY OF ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES Memory Lane Interceptor Sewer Transportation Mitigation Measures (continued) Replacement parking for temporarily displaced private parking shall be considered.Parking for construction employees shall be arranged in the project staging areas or in designated areas.approvable to local City officials.Construction through parking lots will be phased and scheduled so as to minimize disruptions to existing uses. The Traffic Control Plan for Construction shall designate the responsibility and i~ncorporate provisions for daily supervision of construction traffic safety including inspection of detour plans,signing and safety problems. Specific mitigation measures for the various segments of construction include: 1.Memory.West of Bristol Work hours 7 a.m.to 3 p.m.Pipeline in westbound #3 lane,work zone and equipment in westbound #2 lane.Eastbound traffic in normal pattern.(Restriping may be required.)Access to apartment complex and businesses on North side of Memory will require coordination between contractor and property/business owners. 2.Memory at Bristol Intersection Jacking operation.One westbound lane during open receiving pit on west leg of intersection.North to west double left turn lane needs to be reduced to one lane.This will cause capacity problems and will require advance posting warning of delays and recommending alternate routes. 3.Memory Lane.Bristol to Flower Work hours 7 a.m.to 4 p.m. Pipeline in westbound #2 lane.Work zone in westbound #1 lane.Westbound traffic in eastbound #1 lane.Eastbound traffic in eastbound #2 lane. Prohibit parking in the approach to work zone. Access to residential properties needs a flag controlled operation in area of Memory with raisedmedian. 4.Memory at Flower Intersection Jacking operation across Flower and along Memory Lane to alley east of Farmers. 5.Alley,Farmers to 1-5 Work hours 7 a.m.to 4 p.m.Pipeline and work zone will likely require full width of alley.Property owners will need to be advised regrrding limited access to their properties during construction. 6.Owens 1-5 to Broadway Work hours 9 a.m.to 4 p.m.Pipeline and work zone varies alo~ig south side of street and center of street.Maintain traffic in one lane each way.Parking lot driveways adjacent to work zone may be closed since alternate access exists. 7.Owens at Broadway intersection Work hours 8 p.m.to 6 a.m.for open cut.Jacking across Broadway is an option since the Owens Drive lane configuration can be modified to accommodate 2 WB and 2 EB lanes east of Broadway and 1 westbound and 2 eastbound lanes west of Broadway. Table 1-i SUMMARY OF ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES Memory Lane Interceptor Sewer Transportation Mitigation Measures (continued) 8.Owens,Broadway to Main Work hours 6 a.m.to 4 p.m.Pipeline and work zone adjacent to north side curb.Shift lane configuration to provide 2 lanes in each direction during work hours. 9.Main at Owens Intersection Jacking operation will not affect existing traffic patterns to a measurable degree. 10.Owens.Main to Lawson Work zone and pipeline outside traveled way. 11.Owens,Lawson to City Limit Line Work hours 7 a.m.to 4 p.m.Work zone on south side of street.Maintain 1 lane each direction. 12.Parker.City Limit to Town &Country driveway and Town &Country driveway to LaVeta Work hours 9 a.m.to 3 p.m.Work zone in west side of street.Maintain 1 northbound and 1 southbound lane with up to 3 lanes for left turns where required.Prohibit parking.Coordinate acces•s to properties. 13.Parker.Town &CountrY driveway May require week-end work. 14.LaVeta at Parker intersection 15.LaVeta.Parker to Batavia 16.Batavia at LaVeta Peak hour traffic data indicates near capacity operation.24 hour data not available.Work hours 9 a.m.to 3 p.m.Minimum 1 lane in each direction. Property access right turn in/out only. Prior to the implementation of construction an application for a “Utilities “Encroachment Permit”shall be sent to the (Caltrans and the EMA and COE). Comments from the various depaEtments of these entities shall,be incorporated into the final plans.Additional permits will be required from the Cities of Santa Ana and Orange for their streets and utility services,ongoing planning meetings have facilitated close coordination with the two cities in developing the project design and schedule. Air Quality Impacts The largest potential impact on air quality would be related to pipeline construction involving excavation and earth moving along with the transportation requirements to bring workers and materials to the site and to haul off surplus earth.These activities will emit dust and air pollutant emissions well in excess of those which normally occur.Heavy construction equipment such as trucks,tractors,scrapers,backhoes,and other equipment powered by internal combustion engines will emit a few pounds per day of various air pollutants.This source of air pollution is very minor compared to the overall regional air pollution burden.The project emissions will be insignificant on a regional scale,and most likely,on a local scale. Table 1-1 SUMMARY OF ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES Memory Lane Interceptor Sewer Air Quality Impacts (continued) Vehicular emissions during construction would be relatively minor on a regional scale.It is estimated that the construction period would last for approximately nine months and that during this timefraine emissions would be generated by construction activities including workers commuting to the site. This temporary construction activity may result in localized air quality degradation and contribute to the increase in emissions within the air shed. Such emissions are certainly not expected to cause any deterioration of air quality which would cause exceedance of existing applicable standards. Overall regional air quality and long-term compliance with standards is not expected to be adversely affected by this project either -directly or indirectly. Once operational and in use for conveyance of of raw sewage to the Santa Ana River Interceptor,the pipeline is not expected to generate odors.Past experience has -not shown that these pipelines and their manholes (where air is vented)pose any odor problems. Air Quality Mitigation Measures Both dust and gaseous pollutant emissions can be reduced by simple control methods.During excavation,watering should occur on a daily basis as needed for dust suppression.As previously stated,watering on a regular basis (i.e. , two to four times per day)can reduce dust emissions by about 50 percent.Gaseous pollutant emissions from vehicles can be reduced by the use of well tuned and properly maintained equipment. Recreation Impacts Implementation of the proposed project will cause some disruption of the Riverview Golf Course,the two cart paths and the bike path along the Santa Ana River.Connection to the Santa Ana River Interceptor will be made at the County right-of-way adjacent to the bike path and will involve construction of a permanent structure at that location.Removal of one large eucalyptus tree from the golf course may be required. Implementation of the proposed project will require installing the pipe through the Santa River Trail bikeway.It has been proposed to tunnel under the bikeway to avoid disruption of this heavily used facility.Diversion around the construction site or to provide a bridge and fencing over the trenched area are other options but given the nature of the underpass in this area,it would be difficult to temporarily re-route the facilities to avoid the construction area. Access to Santiago Park and the lawn bowling facilities and day camp will be interrupted during the closure of Owens Drive. Access to Morrison Park via memory Lane will be limited during construction of a portion of the project. Table 1-1 SUHMARY OF ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES Memory Lane Interceptor Sewer Recreation Mitigation Measures During construction of the portion of the project in the Santa Ana River,the two golf car paths will be temporarily re-routed.The pipeline will be routed So as to avoid disruption to the Green at Hole 15 and the Tee at Hole 13.The green in particular and to some extent the Tee have been identified by the management at Riverview Golf Course as sensitive areas because of the cultivation that which would be necessary to restore the facilities. Every effort will be made to avoid disturbance of the bicycle path adjacent to the Santa Ana River.If it is not possible to safely relocated the path temporarily,the project will tunnel underneath the facility. If it is necessary to remove the eucalyptus tree,a replacement tree will be planted at the conclusion of the project. Access to Morrison Park will be possible via Orange Road to Corrigan during construction on Memory Lane. Access to the Santiago Park lawn bowling and day camp facilities will be maintained via Lawson Avenue. Where necessary to protect recreational facility users,chain link fencing will be installed on a temporary basis to provide safety. Minor and unavoidable adverse impacts are anticipated to recreational activities. Impacts on Utilities Changes under the revised interceptor pipeline project (from that proposed in June 1991,include an increase in the interceptor sewer size from 33 to 36 inches. The need for the proposed project is related to the increased flows expected to be generated by redevelopment and new construction in the vicinity of Main Place in the Cities of Santa Ana and Orange. Excavation could potentially disrupt existing sewer service in the imniediate vicinity.In some instances some local sewer lines will be tied into the new pipeline.The proposed pipeline alignment,however,have been selected to minimize disruption to existing utilities.As a result,no major utility relocations are anticipated. There are no major impacts anticipated to electrical,natural gas,fuel line, cable TV,water supply lines,storm drains,telephone cables or other utilities. The proposed project will not significantly increase electrical consumption. Table 1-1 SU~ARY OF ENVIRONMENTAL IMPACTS,AND MITIGATION MEASURES Memory Lane Interceptor Sewer Utility Mitigation Measures All excavation activity related to the proposed project shall be performed in such a way as to protect all existing utilities few,if any (other than some local sewer lines)of which,have to be relocated.No unavoidable adverse impacts as to utilities are anticipated. The applicant shall coordinate with SCE to ensure that existing electrical service will not be interrupted during project construction. There is a 36 inch high pressure line is located adjacent to the project alignment in Parker Street between La Vita Avenue and the City of Orange/City of Santa Ana boundary.Excavation activities could potentially disrupt existing gas services provided to the immediately surrounding areas if an unforeseen accident occurred. Utility locations have been verified with local agencies and the design is intended to avoid moving existing services. The proposed project is itself a mitigation project to avoid constructing two separate projects on other congested surface streets in the Cities of Santa Ana and Orange.These alternatives are discussed in Section 7.0. Health and Safety Impacts No extraordinary health and safety impacts are anticipated as a result of construction of the proposed facilities.However,factors such as inconvenience,annoyance,and/or vexation resulting from noise,dust,leaks, odor,spills,overflows of untreated wastewater,and/or traffic congestion impacts addressed in previous sections may become nuisance factors.The most significant nuisance conditions likely to occur is during limited periods when tie-ins with existing facilities occur or when operations commence. The introduction of construction activities in developed areas will create a degree of confusion and congestion,each of which could enhance the potential for vehicular and pedestrian conflicts.The crossing of intersections could require.a narrowing of traffic flows temporarily,that in turn could create confusion,congestion and potential conflicts unless properly handled. The open trench,any parked machinery,as well as any stockpiled dirt will appear to be an attractive but dangerous play area to children able to reach the construction area.If crosswalks are to be crossed by construction vehicles,this will provide a potential hazard to young children. In addition to these dangers,construction of the facility will intensify the risk of fire should an accident occur(i.e.gas line break,etc.) Once constructed,the facilities should be structurally sound so as not to pose a danger during seismic activity and/or other public disaster. Table 1-1 SUMMARY OF ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES Memory Lane Interceptor Sewer Health and Safety Impacts (continued) The safety of Santa Ana School District school children walking near the project site at Memory.Lane crossings near Flower Street and Bristol for the Santiago Elementary School and the Herbert Hoover Elementary School at Owens and Main Street could be affected by the proposed construction.The safest routes to both schools are included herein in Appendix C. The Orange Unified School District does not anticipate any impact to its nearest schools which include Fairhaven and West Orange Elementary Schools and Portola and Yorba Jr.High Schools. There are no underground tanks locating within the proposed alignment,but there are some nearby which must be avoided or which could be leaking (none are known to be leaking now.Those closest to the actual construction are located at the Chevron and Exxon Stations on the northerly side of Memory Lane at Bristol. There are no reported or known.leaking underground tanks in the proposed project area that would lead to health or safety issues resulting from excavation. There are not expected to be any significant impacts associated with the Naval Fuel Line.As-built drawings are being obtains and the exact location will be determined and taken into account in project alignment for the jacking under the Freeway and connections in Memory Lane. No unavoidable adverse impacts as to health and safety considerations are anticipated. Health and Safety Mitigation Measures To provide maximum safety for the residents of the surrounding residential developments as well as the general public,the construction specification will provide for the erection of a minimum 7-foot chain link fence or other means of securement to preclude unauthorized entry to any excavation during all nonworking hours (24-hour basis)including weekends and holidays. While cons ruction operations are under way,the contractor will be required to provide means to protect the public from his activities and to restrict access to the construction site to authorized personnel. Security will be provided at equipment yard areas and other dangerous sites, by the contractor. The fencing or other security measures around the construction area should preclude entry to the stockpiled,machinery arid excavation area. In heavily developed areas or where appropriate,the excavated material will be removed and stockpiled offsite to protect public safety when such action is necessary. Table 1-1 STTh~MARY OF ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES Memory Lane Interceptor Sewer Health and Safety Mitigation Measures (continued) Signs,lights and flagmen should be utilized as necessary to ensure safe, adequate access for pedestrians and vehicles at all times when there is heavy truck traffic on local surface streets. Contractors shall comply withall applicable laws and regulations. Every effort shall be made to minimize the impacts of odors when tie-ins are made.- Construction signing used for handling traffic and public convenience should conform to the State of California,Department of Transportation,Manual of Warning Signs,Lights,and Devices for Use in Performance of Work Upon Highways,latest edition. All signs should be illuminated or reflectorized when they are used during hours of darkness.All cones,pylons,barricades or posts used in the diversion of traffic should be provided with flashers or other satisfactory illumination if in place during hours of darkness. The signing,barricading,and diverting of traffic should be subject to the approval of the authority with jurisdiction over such public streets.The contractor should maintain a 24-hour emergency service to remove,install, relocate,and maintain warning devices and should furnish to the authority, names and telephope numbers of those persons responsible for this emergency service.In the event those persons do not promptly respond or the authority deems it necessary to call out other forces to accomplish emergency service,the Contractor should be held responsible for the cost of such emergency service. The Contractor should provide and maintain such fences,barriers,directional signs,lights,and flagmen as are necessary to give adequate warning to the public at all times of any dangerous conditions to be encountered as a result of the construction work and to give directions to the public. A guard should be placed at all school crossings during normal school hours while construction is.within 500 feet of any school crossing or if truck traffic on streets where there are school crossings is required. Interference with the underground tanks could cause leakage,therefore adequate protection measures will be implemented by strict avoidance of the areas near the tanks. There are not expected to be any significant impacts associated with the Naval Fuel Line since its exact location will be noted on the plans. Coordination with the Orange County Transportation Authority and the Cities of Orange and Santa Ana is underway.The location of the newly relocated fuel line will be noted on the Plans and Specifications so potential disruption will not occur. Table 1-1 SW(MARY OF ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES Memory Lane Interceptor Sewer Aesthetic Impacts Visual impacts from machinery,trenching,and dirt pilings will occur along each segment of the proposed alignment during the period that construction activities are in progress.The primary visual impacts from the construction will be short-term;i.e.,for the duration of construction. Typically,construction occurs on small reaches or segments with construction activities lasting only a few days for each segment.The impacts of noise, dust and local air pollutant emissions from equipment would be limited to these few days for any particular household or business with the exception of the areas where jacking were taking place durIng which time the impacts may be extended for a few days longer. The only long-term visual impact will be where the vent pipes and access manholes and surface access ports to the utility corridor. The proposed realignment will not create any significant impacts that are different from those which presently exist. Aesthetic Mitigation Measures Landscaping programs will be coordinated with sewer construction projects to re-establish landscaped areas impacted by construction. Excess earth will be removed from areas of sewer?construction,or be recontoured in conjunction with landscaping programs. Excavation should be conducted with minimal grading of slopes.Revegetation of disturbed areas should commence immediately after project completion. No unavoidable adverse impacts as to aesthetic issues are anticipated. Cultural Resource Impacts As there are no known sites in the immediate project area and the vicinity is a highly developed historical floodplain,no impacts are anticipated. Cultural Resource Mitigation Measures In accord~~ce with the recommendations of the California ,Archaeological Inventory Regional Information Center,no archaeological survey will be conducted at this time.A halt work condition will be included in the contract documents in the event cultural resources are uncovered during construction.Any archaeological resources uncovered during construction which may be impacted will be mitigated by the stipulations of Appendix K of the CEQA Guidelines,as follows: Table 1-1 SUMMARY OF ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES Memory Lane Interceptor Sewer Cultural Resource Mitigation Measures (continued) a.In general,buried remains which go undetected during a surface survey could bed encduntered during development. If evidence of archaeological resources is encountered during project excavation,all related activity shall cease in the vicinity of the find,but not for the overall construction,and a qualified archaeologist will be consulted to assess the significance of the resource and to recomend appropriate protection measures. b.If requested by the Native American Heritage Comission, the applicant will meet with and make arrangements for a Native American observer together with an archaeologist to be present onsite during grading operations as reconinended by the State Native American Heritage Coimiission. c.If human remains of possible Native American origin are encountered during the project,the Orange County coroner’s office and the Native American Heritage Comission will be contacted for preservation and protection of the remains,per the California Native Comi ssi on. No unavoidable adverse impacts as to archaeological sites or cultural resources are anticipated. Impacts on Natural Resources The project will use some 12,000 feet of pipe and manhole structures made of natural materials.Energy in the form of fuels for vehicles and equipment will be used.Neither of these uses of materials is considered to be significant in the context of ongoing infrastructure support systems in southern California. The use of energy and natural resources is an unavoidable adverse impact Natural Resource Mitigation Measures To the extent allowable,asphalt and cement removed from streets and alleys will be re-icled.Soil removed will be backfilled or stockpiled for other ‘uses. STATE OF CALIFORNIA) )SS. COUNTY OF ORANGE ) I,RITA J.BROWN,Board Secretary of the Boards of Directors of County Sanitation Districts Nos.1 and 2 of Orange County,California,do hereby certify that the foregoing Resolution No.92—11 was passed and adopted at an adjourned regular meeting of said Boards on the 19th day of February,1992,by the following vote,to wit: District 1 AYES:Dan Griset,Chairman,Fred Barrera,Charles E.Puckett,Don R. Roth,James A.Wahner None None Irv Pickier,Chairman,Fred Barrera,Buck Catlin,John Collins, Barry Denes,William 0.Mahoney,Robert H.Main,Glenn Parker, Miguel Pulido,Don R.Roth,Henry W~Wedaa None Arthur G.Newton IN WITNESS WHEREOF,I have hereunto set my hand and affixed the official seal of County Sanitation District No.1 on behalf of itself and District No.2 of Orange County,California,this 19th day of February,1992. ~~ Rita J.Brown,’~oard Secretary Boards of Directors,County Sanitation Districts Nos.1 and 2 of Orange County,California NOES: ABSENT: District 2 AYES: NOES: ABSENT: