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HomeMy WebLinkAboutOCSD 00-18RESOLUTION NO.OCSD 00-18 ) MAKING CERTAIN FINDINGS RELATING TO SIGNIFICANT ENVIRONMENTAL EFFECTS IDENTIFIED IN THE FINAL ENVIRONMENTAL IMPACT REPORT/ENVIRONMENTAL IMPACT STATEMENT FOR IMPLEMENTATION OF THE RELOCATION AND/OR PROTECTION OF THE SANTA ANA RIVER INTERCEPTOR;ADOPTING A MITIGATION MONITORING AND REPORTING PROGRAM;ADOPTING A STATEMENT OF OVERRIDING CONSIDERATIONS;DIRECTING STAFF TO PROCEED WITH ALTERNATIVE “D”;AND AUTHORIZING THE FILING OF A NOTICE OF DETERMINATION RE SAID PROJECT A RESOLUTION OF THE BOARD OF DIRECTORS OF THE ORANGE COUNTY SANITATION DISTRICT MAKING CERTAIN FINDINGS RELATING TO SIGNIFICANT ENVIRONMENTAL EFFECTS IDENTIFIED IN THE DRAFT ENVIRONMENTAL IMPACT REPORT/ENVIRONMENTAL IMPACT STATEMENT FOR THE RELOCATION AND/OR PROTECTION OF THE SANTA ANA RIVER INTERCEPTOR (“THE PROJECT”);ADOPTING A MITIGATION MONITORING AND REPORTING PROGRAM; ADOPTING A STATEMENT OF OVERRIDING CONSIDERATIONS;DIRECTING STAFF TO PROCEED WITH ALTERNATIVE “0”;AND AUTHORIZING THE FILING OF A NOTICE OF DETERMINATION RE SAID PROJECT JULY 19,2000 WHEREAS,the Board of Directors of the Orange County Sanitation District (OCSD),hereinafter referred to as “District”,is presently considering the approval of the Relocation and/or Protection of the Santa Ana River Interceptor (SARI),a project to avoid and/or protect structural failure of the SARI line due to flood erosion,herein referred as the Relocation and/or Protection of the SARI;and, WHEREAS,the District is the lead agency for the preparation and consideration of environmental documents for the Relocation and/or Protection of the SARI,pursuant to the California Environmental Quality Act of 1970,as amended,(“CEQA”),the State of California CEQA Guidelines and District CEQA procedures;and, WHEREAS,to assess the Relocation and/or Protection of the SARI’s environmental impacts objectively,the District has caused to be prepared a Draft Environmental Impact Report/Environmental Impact Statement (EIR/EIS)to assess the significant environmental impacts,mitigation measures,and alternatives associated with the Relocation and/or Protection of the SARI,and identify an environmentally superior alternative;and, WHEREAS,the District has consulted with other public agencies and the general public,giving them an opportunity to comment on the Draft EIR/EIS as required by CEQA;and, WHEREAS,on May 24,2000,the District held a duly-noticed public hearing to provide a further opportunity for the general public to comment on and respond to the Draft EIR/EIS;and, WHEREAS,the District has objectively evaluated the comments from public agencies and persons who reviewed the Draft EIR/EIS;and, WHEREAS,the comments and recommendations received on the Draft EIR/EIS, either in full or in summary,together with the District’s responses to significant environmental concerns raised in the review and consultation process,have been included in the Final EIR/EIS;and, WHEREAS,said Final EIR/EIS consisting of the Draft EIR/EIS and the Supplement,which includes changes to the Draft EIR/EIS in response to comments, have been presented to the members of the District Board of Directors for review and consideration prior to the final approval of,and commitment to,the Relocation and/or Protection of the SARI. WHEREAS,Alternative “D”includes relocation of the SARI from the designated 100-year floodplain into the alignment under La Palma Avenue;construction of 28,000 feet of 39 to 60-inch diameter pipeline,along the bike path paralleling La Palma Avenue to north of the Santa Ana River between Weir Canyon and Green River Golf Course; coordination of several utility crossings;and coordination of deep tunneling under La Palma Avenue and upstream to the northerly side of Burlington Northern Santa Fe Railroad Track;and WHEREAS,Staff has recommended Alternative “D”as the Preferred Alternative; NOW,THEREFORE,the Board of Directors of Orange County Sanitation District, DOES HEREBY RESOLVE,DETERMINE AND ORDER: 1.That the proposed Relocation and/or Protection of the SARI’s Final EIRJEIS has identified a number of significant or potentially significant environmental effects. These impacts are identified in the Final EIRJEIS. 2.That the Board of Directors finds that changes or alterations have been required in, or incorporated into,the proposed project,which avoid or substantially lessen significant environmental effects,all identified in the Final EIRJEIS. 3.That the Board of Directors makes the findings set forth in Attachment A,including findings concerning Alternative “D”;significant unavoidable adverse impacts; significant impacts reduced to less than significant levels by mitigation measures incorporated into the Relocation and/or Protection of the SARI;and Project Alternatives. 4.That the Board of Directors adopts the Mitigation Monitoring/Reporting Program for Alternative “D”attached hereto as Attachment B. 5.That the Board of Directors adopts the Statement of Overriding Considerations set forth in Attachment A,and makes the findings set forth therein. 2 ) 6.That the Board of Directors adopts Alternative “D”and directs Staff to proceed with Alternative “D”of the Project. 7.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 July 19,2000. ATTEST: Board Sec(9~ary (j :~ .5 -r ‘~ )1 H:\wp.dta\engUOBS &CONTRACTS\2-41 SARI REALIGNMENflCEQA -EIR\Making Certain Findings Resolution 99- OX.doc ‘I S--f 3 Attachment A -Alternative D IINDINGS CONCERNING SIGNIFICANT UNAVOIDABLE ADVERSE IMPACTS The Final EIR/EIS indicates that the implementation of the project would result in two significant~ unavoidable adverse impacts.As described below in the findings for each of these impacts,there are~ either no feasible mitigation measures or the feasible mitigation measures would only partially mitigate1 ~he impact and the residual effect would remain significant.It is hereby determined that these impacts: are acceptable for the reasons specified in the Statement of Overriding Considerations. Water Quality ~s shown on page 8-22 of the Draft EIR/EIS,construction of Alternative D (the preferred alternative)1 ~would entail excavation and other earthmoving activities which would result in exposed soils and1 stockpiles of earth.This would expose the material to erode at an accelerated rate during storm events.1 Stormwater runoff could discharge sediment into the Santa Ana River at a rate higher than under current: conditions. ~lso as shown on page 8-22 of the Draft EIR/EIS,another potential source of water quality degradation is ~he use and staging of heavy equipment and other construction equipment.Equipment leaks of oil, ~rease and fuel products could adversely affect local water quality in either urban runoff or the Santa Ana River which receives the urban runoff streams or could be directly impacted by those alternatives with alignments within the river channel. Findings Based on the Final EIR/EIS and the entire record before the Orange County Sanitation District Board of’ Directors,the Board finds that there is no feasible mitigation measure that will reduce the impacts! presented above to less than significant levels.Nonetheless,the District is adopting the mitigation~ measures presented in the Mitigation Monitoring and Reporting Program.Specific economic,legal, social,technological,or other considerations justify approval of the project notwithstanding these impacts as more fully described in the Statement of Overriding Considerations. FINDINGS CONCERNING SIGNIFICANT IMPACTS REDUCED TO LESS THAN SIGNIFICANT LEVELS BY MITIGATION MEASURES INCORPORATED INTO THE PROJECT flhe Final EIR/EIS identifies significant impacts,that are reduced to a “less than significant”level by the inclusion in the project approval of the mitigation measures identified in the Final EIR/EIS.It is hereby determined that these significant environmental impacts of the project will be avoided or substantially lessened by the inclusion of the identified mitigation measures,which are presented in the Mitigation ~Monitorin~and Reporting Program. 1 EIR/EIS Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18 -Attachment A \\radon\datal\wp.dta\engUOBS &CONTRACTS\2-41 SARI REALIGNMENT’~CEQA -EIR\Attach A Findings for Alternative D.doc Attachment A -Alternative D ~id Use and Planning Construction could have a temporary adverse effect on recreationists utilizing the bikeway along La Palma Avenue,Featherly Regional Park,Brush Canyon Park,and the Green River Golf Course (page ES-5 of Draft EIR/EIS). Geology and Soils ~rhree faults plus a fault splay cross the proposed alignment (page ES-6 of Draft EIR/EIS).I During construction,disturbed soils,as well as any stockpiled soils,would be subject to wind and/or water erosion( (page ES-6 of Draft EIR/EIS). Some of the soils along the pipeline alignment are corrosive based on pH,sulfate and chloride testing (page ES-6 o~ Draft EIRIEIS). I ~ir Quality Heavy construction equipment such as trucks,tractors,backhoes,cranes,utility vehicles,drill rigs,andt other equipment powered by internal combustion engines,such as generators,would emit a few pounds~ (per day of various air pollutants (page ES-8 of Draft EIR/EIS). ~The total estimated emissions from the construction under worst case conditions to generate up to 1OO~ pounds per day of dust during a Santa Ana wind condition (page ES-8 of Draft EIRIEIS). TransportationlTraffic (During construction it will be necessary to temporarily close the bikeway which runs parallel to La Palma Avenue andt divert bicyclists and hikers to La Palma Avenue (page ES-9 of Draft EIRIEIS). During construction of the portion of pipeline along Camino de Bryant,it will be necessary to close one lane of traffi~ ~iuring working hours which will be a great inconvenience to residents in the Brush Canyon area (page ES-9 o~ Draft EIR/EIS). Biological Resources Temporary and permanent impacts to wildlife habitat would occur during construction (page ES-12 of( Draft EIRIEIS). Mineral Resources ~Several thousand cubic yards of native materials (e.g.,sand,gravel,rock,etc.)will be required to ~onstruct the proposed facilities (page ES-13 of Draft EIRJEIS). 2 EIRJEIS Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18 -Attachment A \‘.radon\datal\wp.dta\eng\JOBS &CONTRACTS’2-41 SARI REALIGNMENT’~CEQA -EIR’Attach A Findings for Alternative D.doc Attachment A -Alternative D Noise Operation of equipment used during the pipeline construction would temporarily increase noise levels to ~,ell in excess of ambient noise levels (page ES-i 5 of Draft EIR/EIS). Public Services there could be periods of lane closures,or at least,traffic control along La Palma Avenue and Camino~ ~e Bryant.This could delay response times by emergency personnel (page ES-16 of Draft EIR/EIS). Utilities and Service Systems. The proposed pipeline would cross several utilities (page ES-17 of Draft EIR/EIS). Aesthetics Construction operations would be highly visible to motorists traveling along La Palma Avenue andi Camino de Bryant (page ES-19 of Draft EIR/EIS). Recreation During construction,it would be necessary to temporarily close the bike path along La Palma Avenue and provide for an alternative bike lane or bike route along La Palma Avenue (page ES-22 of Draft EIRIEIS). Construction work within and adjacent to the Green River Golf Course could also have adverse visual and noise effects on golfers (page ES-22 of Draft EIR/EIS). FINDINGS Based on the Final EIR/EIS and the entire administrative record,the Board finds that changes or alterations have been incorporated into the project which will substantially lessen the significant effects identified above,thereby reducing potential effects to less than significant levels.The District adopts the~ mitigation measures included in the Mitigation Monitoring and Reporting Program. 3 EIR/EJS Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18 -Attachment A \\radon~data1\wp.dta~eng\JOBS &CONTRACTS\2-41 SARI REAUGNMENT~CEQA -EIR\Attach A Findings for Alternative D.doc Attachment A -Alternative D STATEMENT OF OVERRIDING CONSIDERATIONS The California Environmental Quality Act (CEQA)requires a decision-maker,in this case the Orange County Sanitation District Board of Directors,to balance the benefits of a proposed project against its unavoidable environmental risks in determining whether to approve the project.If the Board of Directors allows the occurrence of significant effects through approval of a project,it must state its specific reasons for so doing in writing.Such reasons are included in the “statement of overriding considerations”. Section 15093 of the CEQA Guidelines establishes the following requirements for a statement of overriding considerations: (b) (c) (a)CEQA requires the decision-making agency to balance,as applicable,the economic,~ legal,social,technological or other benefits of a proposed project against its unavoidable environmental risks when determining whether to approve the project.If the specific economic, legal,social,technological or other benefits of a proposed project outweigh the unavoidable, adverse environmental effects,the adverse environmental effects may be considered! “acceptable”. When the lead agency approves a project which will result in the occurrence of significant~~ effects,which are identified in the final EIR but are not avoided or substantially lessened,the~ agency shall state in writing the specific reasons to support its action based on the final E~R~ and/or other information in the record.The statement of overriding considerations shall be~ supported by substantial evidence in the record. If an agency makes a statement of overriding considerations,the statement should be~ included in the record of the project approval and should be mentioned in the notice of~ determination.This statement does not substitute for,and shall be in addition to,findings! required pursuant to Section 15091. hhe Orange County Sanitation District (hereinafter referred to as “District”or ‘OCSD”)adopts and makes’ ~he following statement of overriding considerations regarding the remaining unavoidable impacts1 identified within the Final EIR/EIS for the Relocation and/or Protection of the Santa Ana River Interceptor. In adopting Resolution 00-18,the District’s Board of Directors acknowledges that it has weighed thei benefits of the project against the adverse significant impacts that have not been avoided or substantially~ lessened to less-than-significant levels through mitigation. The District’s Board of Directors hereby determines that the benefits of the project outweigh the~ unmitigated adverse impacts and the project should be approved.The District’s Board of Directors finds! that to the extent that the identified significant adverse impacts have not been avoided or substantially lessened,there are specific economic,legal,social,technological or other considerations which support~ ~pproval of the project 4 EIR/E1S Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18-Attachment A \\radon\datal\wp.dta\eng\JOBS &CONTRACTS\2-41 SARI REALIGNMENT\CEQA -EIR\Attach A Alternative 0 Overriding considerations.doc Attachment A -Alternative D SIGNIFICANT UNAVOIDABLE IMPACTS ~~~~1 Unavoidable or potentially unavoidable significant environmental effects of the project identified in the Final EIR/EIS and Findings of Fact include the following: •As shown on page 8-22 of the Draft EIR/EIS,construction would entail excavation~ and other earthmoving activities which would result in exposed soils and stockpiles of~ earth.This would expose the material to erode at an accelerated rate during storm~ events.Stormwater runoff could discharge sediment into the Santa Ana River at a: rate higher than under current conditions. •Also as shown on page 8-22 of the Draft EIR/EIS,another potential source of water~ quality degradation is the use and staging of heavy equipment and other construction~ equipment.Equipment leaks of oil,grease and fuel products could adversely affect local water quality in either urban runoff or the Santa Ana River which receives the: urban runoff streams. ~DOPTION OF OVERRIDING CONSIDERATIONS The District specifically adopts this Statement of Overriding Considerations and finds that:a)as part of the approval provisions,the project has eliminated or substantially lessened all significant effects on the ~nvironment where feasible;and b)the remaining unavoidable impacts of the project are acceptable in light of the environmental,economic,legal,social,technological,and other considerations set forth herein,because the benefits of the project outweigh the significant and adverse impacts. ~he District finds that each of the overriding considerations set forth below constitutes a separate and~ independent ground for finding that the benefits of the project outweigh its significant adverse~ environmental impacts and is an overriding consideration warranting approval of the project.These~ matters are supported by substantial evidence in the record. BENEFITS The adoption of the project will enable the District to provide safe and reliable wastewater services to the SARI service area and reduce the risk of a pipeline failure which would allow untreated wastewater to flow down the Santa Ana River and into the Pacific Ocean which would eventually result in beach ~losures at Newport and Huntington Beaches.A failure of the SARI line would also allow sand and debris to enter the SARI line and cause damage to the District’s treatment facilities.The District finds that the’ benefits of safe and reliable wastewater services override the significant construction impacts associated I with the proposed project. 5 EIR/EIS Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18 -Attachment A H:\wp.dta\eng\JOBS &CONTRACTS\2-41 SARI REALIGNMENflGEQA -EIR~Attach A Alternative 0 Overriding Considerations.doc Attachment A -Findings Regarding Alternatives to the Proposed Project FINDINGS REGARDING PROJECT ALTERNATIVES The Orange County Sanitation District analyzed six alternatives plus the no project alternative in determining which alternative was the preferred alternative.Those alternatives are briefly described below: •Alternative “A”would involve the relocation of the existing SARI line out of the SantaAna River floodplain between Stations 1071+00 and 1172+07 along with construction of two grade stabilizers at locations where SARI line thalweg crossings will be protected in place. The new pipeline would be located under the existing paved bikeway that parallels La Palma Avenue. •Alternative “B-i’would involve construction of one grade stabilizer in the “horseshoe bend” area and relocation of the SARI line between Stations 1071+00 and 1237+21.The new pipeline would be located out of the Santa Ana River floodplain into an alignment under the existing paved bikeway paralleling La Palma Avenue and continuing upstream along the northerly side of the Burlington Northern Santa Fe (BNSF)railroad to the first manhole (Station 1237+21)in San Bernardino County. •Alternative “6-2”would involve construction of one grade stabilizer at the Brush Canyon confluence and relocation of the existing SARI line between Stations 977+00 and 1172+07. The new pipeline would be located out of the Santa Ana River floodplain into an alignment under the existing paved bikeway which parallels La Palma Avenue (similar to Alternative “A”) and extending downstream in La Palma Avenue past Weir Canyon Road in the City of Anaheim. •Alternative “C”would involve complete relocation of the SARI line between Stations 977+00 and 1237+21.The new pipeline would be located out of the Santa Ana River floodplain into an alignment under La Palma Avenue (similar to Alternative “6-2’)and continuing easterly under the existing paved bikeway to a crossing under the BNSF railroad.This alignment would also extend upstream to the San Bernardino County line along the northerly side of the BNSF railroad to the Green River Golf Course (similar to Alternative “B-i”).This alternative would have two parallel pipelines:one to carry the brine flow (30 mgd)generated from the San Bernardino treatment plants and the other to carry domestic sewage flow (0 to 10 mgd) generated in Orange County downstream from the Green River Golf Course.The Alternative “C”alignment would have minimal wetland impacts because no grade stabilizers would be required;however,it would encounter several utility crossings along the new alignment.In addition,the new alignment would require tunneling due to the depth of the lines beneath La Palma Avenue about a mile east of the Weir Canyon Road bridge.There would also be significant construction challenges within the narrow railroad right-of-way and steep hillsides north of the Green River Golf Course. 6 EIRIEIS Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18-Attachment A \\radon\datal\wp.dta\eng\JOBS &CONTRACTS\2-41 SARI REALIGNMENT\CEQA -EIR~Attach A Findings Proj Alternatives.doc Attachment A -Findings Regarding Alternatives to the Proposed Project ‘Alternative “D”would be similar to Alternative “C”as it would include relocation of the SARI line between Stations 977+00 and 1237+21 as described above.This alternative would be designed to carry the combined flow of brines generated in the San Bernardino and Riverside areas and the domestic sewage flow generated in Orange County downstream of the Green River Golf Course (30 to 40 mgd).The Alternative “D”alignment would require no grade stabilizers;however,it would encounter several utility crossings.In addition,this alignment would require deep tunneling under La Palma Avenue and would encounter significant construction challenges within the narrow railroad right-of-way and steep hillsides north of the Green River Golf Course. ‘Manhole Protection Alternative would involve the installation of four grade stabilizers at locations where reduction of streambed degradation would protect in place the SARI line crossings of the river thalweg and minimize damages to manholes.Also,each manhole would be provided with a gravel access road for inspection and maintenance along with strengthening of manholes against flood damages. No Project Alternative would allow the existing SARI line to remain vulnerable to structural failure during future floods and also remain inaccessible for normal maintenance operations. Section 15091 of the California Environmental Quality Act Guidelines states: (a)No public agency shall approve or carry out a project for which an EIR has been certified which identifies one or more significant environmental effects of the project unless the public agency makes one or more written findings for each of those significant effects, accompanied by a brief explanation of the rationale for each finding.The possible findings are: (1)Changes or alterations have been required in,or incorporated into,the project which would avoid or substantially lessen the significant environmental effect as identified in the final EIR. (2)Such changes or alterations are within the responsibility and jurisdiction of another public agency and not the agency making the finding.Such changes have been adopted by such other agency or can and should be adopted by such other agency. (3)Specific economic,legal,social,technological,or other considerations,including provisions of employment opportunities for highly trained works,make in feasible the mitigation measures or project alternatives identified in the final EIR. (emphasis added) 7 EIR/EIS Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18 -Attachment A \\radon\datal\wp.dta\eng\JOBS &CONTRACTS\2-41 SARI REALIGNMENT\CEQA -EIR\Attach A Findings Proj Alternatives.doc Attachment A -Findings Regarding Alternatives to the Proposed Project (b)The findings required by subsection (a)shall be supported by substantial evidence in the record. (c)The finding in subsection (a)(2)shall not be made if the agency making the finding has concurrent jurisdiction with another agency to deal with identified feasible mitigation measures or alternatives.The finding in subsection (a)(3)shall describe the specific reasons for rejecting identified mitigation measures and project alternatives (emphasis added) (d)When making the findings required in subsection (a)(1),the agency shall also adopt a program for reporting on or monitoring the changes which it has either required in the project or made a condition of approval to avoid or substantially lessen significant environmental effects.Those measures must be fully enforceable through permit conditions,agreements,or other measures. (e)The public agency shall specify the location and custodian of the documents or other material which constitute the record of the proceedings upon which its decision is based. (f)A statement made pursuant to Section 15093 does not substitute for the findings required by this section. Alternative A Alternative A would only relocate the middle section of the affected reach and would include two grade stabilizers at either end of the relocated section,as discussed on page 2-1 of DEIR/EIS.The two grade stabilizers would be subject to failure during a major flood event;therefore,this alternative would not be as reliable as those alternatives that did not include grade stabilizers (May 2,2000 staff meeting).A failure of the SARI would risk having the line as well as the headworks at the treatment plant plugged with silt,sand and debris for a significant period of time (page ES-4 of Draft EIR/EIS).Such an event could lead to wastewater spills throughout Orange County,beach contamination and closure,and fines to paid by OCSD.Replacement of the affected reach of pipeline could take from seven to twelve months (May 2, 2000 staff meeting).At $10 per gallon per day,the maximum fines could potentially exceed $100 to $200 million daily (Section 13360 et seq,Porter Cologne Water Quality Control Act). Construction of the grade stabilizers would also have a significant effect on wildlife habitat and several listed species including the least Bell’s vireo,yellow warbler,Rufus-crowned sparrow,yellow-breasted chat and Santa Aria sucker (Page 11-32 of Draft EIRIEIS). Based on the above findings,Alternative A is infeasible due to environmental,technological,and economic considerations. 8 EIRIEIS Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18 -Attachment A \\radon\datal\wp.dta\eng\JOBS &CONTRACTS\2-41 SARI REALIGNMENT\CEQA -EIR\Attach A Findings Proj Alternatives.doc Attachment A -Findings Regarding Alternatives to the Proposed Project Alternative B-I Alternative B-i would relocate the middle and upper section of the affected reach and include one grade stabilizer at the lower end,as discussed on page 2-4 of DEIR/EIS.The grade stabilizer would be subject to failure during a major flood event;therefore,this alternative would not be as reliable as those alternatives that did not include grade stabilizers (May 2,2000 staff meeting).A failure of the SARI would risk having the line as well as the headworks at the treatment plant plugged with silt,sand and debris for a significant period of time.Such an event could lead to wastewater spills throughout Orange County, beach contamination and closure,and fines to paid by OCSD (page ES-4 of Draft EIR/EIS). Replacement of the affected reach of pipeline could take from seven to twelve months.At $10 per gallon per day,the total/maximum fines could potentially exceed $100 to $200 million daily (Section 13360 et seq,Porter Cologne Water Quality Control Act). Construction of the grade stabilizer would also have a significant effect on wildlife habitat and several listed species including the least Bell’s vireo,yellow warbler,yellow-breasted chat and Santa Ana sucker (page 11-32 of Draft EIR/EIS). Based on the above findings,Alternative B-i is infeasible due to environmental,technological,and economic considerations. Alternative B-2 Alternative 6-2 would relocate the lower and middle section of the affected reach and include one grade stabilizer,as discussed on page 2-6 of DEIR/EIS.The grade stabilizer would be subject to failure during a major flood event;therefore,this alternative would not be as reliable as those alternatives that did not include grade stabilizers (May 2,2000 staff meeting).A failure of the SARI would risk having the line as well as the headworks at the treatment plant plugged with silt,sand and debris for a significant period of time (page ES-4 of Draft EIRIEIS).Such an event could lead to wastewater spills throughout Orange County,beach contamination and closure,and fines to paid by OCSD.Replacement of the affected reach of pipeline could take from seven to twe’ve months (May 2,2000 staff meeting).At $10 per gallon per day,the total/maximum fines could potentially exceed $100 to $200 million daily (Section 13360 et seq,Porter Cologne Water Quality Control Act). Construction of the grade stabilizer would also have a significant effect on wildlife habitat and several listed species including the least Bell’s vireo,yellow warbler,Rufus-crowned sparrow and Santa Ana sucker (page 11-32 of Draft EIR/EIS). Based on the above findings,Alternative B-2 is infeasible due to environmental,technological,and economic considerations. 9 EIR/EJS Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18 -Attachment A \\radon~data1\wp.dta\eng\JOBS &cONTRACTS\2-41 SARI REALIGNMENT~CEQA -EIR\Attach A Findings Proj Alternatives.doc Attachment A -Findings Regarding Alternatives to the Proposed Project Alternative C Alternative C would relocate the entire line out of the river channel and include no grade stabilizers,as discussed on page 2-8 of DEIR/EIS .However,it would be necessary to construct parallel lines;one for brine and one for domestic wastewater.In order to implement .this alternative it would also be necessary for the Santa Ana Watershed Project Authority to separate all raw sewage sources and collect the sewage and brines separately,in parallel systems (May 2,2000 staff meeting).The brine line would have to be extended from the Orange County border to the Orange County Sanitation District outfall,a distance of approximately 20 miles and an added cost of $58 million.Additional wastewater collection systems would have to be constructed upstream of Prado Dam.A preliminary cost estimate indicates that the collection systems would total approximately $46 million.Therefore,the total cost of this alternative would be about $150 million (May 2,2000 staff meeting). Based on the above findings,Alternative C is infeasible due to economic and environmental considerations. Alternative D Alternative D would relocate the entire line out of the river channel and include no grade stabilizers,as discussed on page 2-10 of DEIR/EIS.The brines and domestic wastewater would be transported in the same pipeline thereby eliminating the need for the parallel pipeline system (page 2-10 of Draft EIRIEIS). This alternative was ranked the environmentally superior alternative (page 21-1 and Table 21-1 of Draft EIRIEIS).In conclusion,Alternative D renders itself superior for the following reasons: 1.It relocates the entire length of the SARI line outside the river,therefore it has the lowest risk for failure (compared to Alternatives Bi,B2,and the grade stabilizer alternative) (Table ES-2 of Draft EIRIEIS). 2.It requires the least impact on the environment.By comparison,Alternatives BI,B2,and the grade stabilizer alternative require various ~eveIs of construction work in the river and across the river stream,thus significantly impacting the wildlife habitat.Alternative C involves larger excavations and tunnels than Alternative D,therefore it would generate more noise,construction traffic,and exhaust gas emission for a longer period of time (Table ES-2 of Draft EIR/EIS). 3.The capital investment for Alternative D is lower than Alternative C,and is confined to the project area.Alternative C would require significant additional investments to separate the brines from raw sewage.Alternative D is,therefore,more economical and practical (May 2,2000 staff meeting). Based on the above,this is the preferred alternative. 10 EIRJEIS Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18 -Attachment A \\radon\data1\wp.dta\eng~JOBS &CONTRACTS\2-41 SARI REALIGNMENT\CEQA -EIR\Attach A Findings Proj Alternatives.doc Attachment A -Findings Regarding Alternatives to the Proposed Project Manhole Protection Alternative The Manhole Protection Alternative would include the construction of four grade stabilizers,manhole protection at several manholes and the construction of fifteen access roads and turnarounds,as discussed on page 2-12 of DEIR/EIS.The four grade stabilizers would be subject to failure during a major flood event;therefore,this alternative would not be as reliable as those alternatives that did not include grade stabilizers (May 2,2000 staff meeting).A failure of the SARI would risk having the line as well as the headworks at the treatment plant plugged with silt,sand and debris for a significant period of time.Such an event could lead to wastewater spills throughout Orange County,beach contamination and closure,and fines to paid by OCSD (page ES-4 of Draft EIRIEIS).Replacement of the affected reach of pipeline could take from seven to twelve months.At $10 per gallon per day,the total/maximum fines could potentially exceed $100 to $200 million daily (Section 13360 et seq of the Porter Cologne Water Quality Control Act). Construction of the grade stabilizers would also have a significant effect on wildlife habitat and several listed species including the white-tailed kite (pages 11-21 and 11-28 of Draft EIRIEIS),least Bell’s vireo and yellow-breasted chat (page 11-28 of Draft EIRIEIS)and Santa Ana sucker (page 11-22 of Draft El R/EIS). Based on the above findings,the Manhole Protection Alternative is infeasible due to economic and environmental considerations. No Project Alternative The No Project Alternative would continue to subject the SARI to failure,as discussed on page 2-15 of DEIR/EIS.A failure of the SARI would risk having the line as well as the headworks at the treatment plant plugged with silt,sand and debris for a significant period of time.Such an event could lead to wastewater spills throughout Orange County,beach contamination and closure,and fines to paid by OCSD.Replacement of the affected reach of pipeline could take from seven to twelve months (May 2, 2000 staff meeting).At $10 per gallon per day,the total/maximum fines could potentially exceed $100 to $200 million daily (Section 13360 et seq of the Porter Cologne Water Quality Control Act). Based on the above findings,the no project alternative is infeasible due to environmental and economic considerations. 11 EIR/EJS Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18 -Attachment A \\radon\datal\wp.dta\eng\JOBS &CONTRACTS\2-41 SARI REALIGNMENT\CEQA -EIR~.Attach A Findings Proj Alternatives.doc ATTACHMENT B MITIGATION MONITORING/REPORTING PROGRAM FOR THE ALTERNATIVE D OCSD Resolution 00-IS,Attachment B Mitigation Monitoring and Reporting Program for Alternative D LAND USE AND PLANNING mpact: ~onstruction could have a temporary adverse effect on recreationists utilizing the bikeway along La Palma Avenue,Featherly Regional Park,Brush Canyon Park, md the Green River Golf Course.Less than significant with mitigation. Mitigation Measures: ~ompIy with local ordinances and restrict construction activities to daylight hours or as specified in encroachment permits. Post notices or provide notification of construction activities to adjacent property owners (including homeowners and businesses)at least 72 hours in advance o :onstruction and provide a contact and phone number of an OCSD staff person to be contacted regarding questions or concerns about construction activity. ~tlaintain steel trench plates at the construction sites to restore access across open trenches,if necessary. Drovide temporary signage indicating that businesses are open IMPLEMENTATION PROCEDURE MONITORING AND REPORTING MONITORING RESPONSIBILITY MONITORING SCHEDULE 1.Include compliance with local Maintain record of signage,business OCSD Prior to and during construction. construction ordinances in notifications inspections and construction specifications construction schedule. including site safety during non-construction hours. 2.Include the preparation and distribution of notifications prior to construction activities in contract specifications. 3.Maintain record of communication with local authorities. 4.Include signage for impacted businesses in contract specifications. 5.Conduct periodic construction site inspections. 1 Mitigation Monitoring and Reporting Program Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18,Attachment B H:\wp.dta\eng\JOBS &CONTRACTS\2-41 SARI REALIGNMENT\CEQA -EIR\Attach B MMRP for Alternative D.doc Mitigation Monitoring and Reporting Program for Alternative D AGRICULTURAL RESOURCES Impacts: There were no impacts identified. Mitigation Measures: No mitigation is required. POPULATION AND HOUSING Impacts: rhere were no impacts identified. Mitigation Measures: No mitigation is required. 6EOLOGY AND SOILS Impacts: rhree faults plus a fault splay cross the proposed alignment. During construction,disturbed soils,as well as any stockpiled soils,would be subject to wind and/or water erosion. Some of the soils along the pipeline alignment are corrosive based on pH,sulfate and chloride testing. hese impacts are less than significant with mitigation. 2 Mitigation Monitoring and Reporting Program Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18,Attachment B H:\wp.dta\eng’JOBS &CONTRACTS\2-4 I SARI REALIGNMENT\CEQA -EIR\Attach 13 MMRP for Alternative D.doc Mitigation Monitoring and Reporting Program for Alternative D Mitigation Measures: OCSD should adhere to the geotechriical recommendations resulting from the ongoing studies during design. Standard erosion control measures should be included in all construction specifications.Suggested mitigation measures include: Minimize exposed soil surfaces in area and in time. Retain existing vegetation where possible. Prohibit clearing and grading activities until a firm construction schedule is known. Stabilize all construction site soils with erosion control measures,such as silt fences,matting,etc. Control dust during construction by frequent watering. OCSD should retain a corrosion engineer to determine the best methods to protect the pipeline from corrosion due to the high corrosivity properties of the soil. OCSD should conduct pump tests to determine the quantity of dewatering that will be required along the pipeline alignment IMPLEMENTATION PROCEDURE MONITORING AND REPORTING MONITORING RESPONSIBILITY MONITORING SCHEDULE 1.Include seismic specifications in Maintain record of construction OCSD Prior to and during construction. the construction specifications.specifications and geotechnical2.Include erosion control information. measures in construction specifications. 3.Contract with a qualified corrosion engineer. 4.Conduct pump tests to determine the quantity of dewatering. 3 Mitigation Monitoring and Reporting Program Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18,Attachment B H:\wp.dta\cng\JOBS &CONTRACTS\2-41 SARI REALIGNMENT\CEQA -EIR\Attach B MMRP for Alternative D.doc Mitigation Monitoring and Reporting Program for Alternative D HYDROLOGY AND WATER RESOURCES Impacts: Dewatering of groundwater is required to keep the sites from having large amounts of water in them in areas where the groundwater levels are higher than the pipeline installation depth below grade. Construction would entail excavation and other earthmoving activities,which would result in exposed soils and stockpiles of earth.This would expose the material o erode at an accelerated rate during storm events. ~Equipment leaks of oil,grease,and fuel products could adversely affect local water quality in either urban runoff or the Santa Ana River. rrhese impacts are potentially significant with mitigation. Mitigation Measures: ~onstruction contractors should implement Best Management Practices to prevent erosion and sedimentation to avoid significant adverse impacts to surface water uality.These should be incorporated into a Storm Water Pollution Prevention Program (SWPPP). ~he District should coordinate with the Orange County Public Facilities and Resources Department (Orange County Flood Control District)Planning Section to pnsure compatibility and joint use feasibility with existing and future projects IMPLEMENTATION PROCEDURE MONITORING AND REPORTING MONITORING RESPONSIBILITY MONITORING SCHEDULE 1.Implement BMP’s of Statewide Maintain compliance with SWMP and OCSD Prior to and during construction. SPCC for administrative record 3.hiip~ment existing SWMP and ~ciuthng annual reports to the SPCC. 4.Periodically update SWMP and Maintain record of site inspections 5.Provide adequate spill and sample analysis results. prevention and surface water management SOP’s in contract specifications. 6.Periodically inspect construction site. 4 Mitigation Monitoring and Reporting Program Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18,Attachment B H:\wp.dea\eng\JOBS &CONTRACTS\2-4 I SARI REALIGNMENT\CEQA -EIR\Attach B MMRP for Alternative D.doc Mitigation Monitoring and Reporting Program for Alternative D ~RQUAUTY Impacts: Heavy construction equipment such as trucks,tractors,backhoes,cranes,utility vehicles,drill rigs,and other equipment powered by internal combustion engines, uch as generators,would emit a few pounds per day of various air pollutants. he total estimated emissions from the construction is estimated under worst case conditions to generate up to 100 pounds per day of dust during a Santa Ana md condition. hese are less than significant impacts with mitigation. Mitigation Measures: ~Maintain construction equipment engines by keeping them properly tuned. Use clean and low-sulfur fuel for equipment. ~Spread soil binders on site,unpaved roads,and staging areas ~1Vater site and equipment in the morning and the evening. ~Reestablish ground cover on the construction site through seeding and watering. Cover exposed soils whenever possible. Suspend-grading activities during first and second stage smog alerts and during high winds in accordance with SCAQMD Rule 403 requirements. Cover or maintain a minimum 12-inch freeboard on haul trucks and cover trucks with tarps. Mitigation Monitoring and Reporting Program Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18,Attachment B H:~wp.dta\eng\JOBS &CONTRACTS\2-41 SARI REALIGNMENT\CEQA -EIR~Atiach B MMRP for Alternative D.doc Mitigation Monitoring and Reporting Program for Alternative D I IMPLEMENTATION PROCEDURE MONITORING AND REPORTING MONITORING RESPONSIBILITY MONITORING SCHEDULE 1.Conduct mitigation measures to Maintain record of construction OCSD Prior to and during construction. reduce construction air methods for administrative record. emissions. 2.Conduct periodic construction Maintain record of site inspections for site inspections,administrative record. TRANSPORTATION/TRAFFIC Impacts: During construction it will be necessary to temporarily close the bikeway which runs parallel to La Palma Avenue and to divert bicyclists and hikers to La Palma \venue. During construction of the portion of pipeline along Camino de Bryant,it will be necessary to close one lane of traffic during working hours,which will be a great inconvenience to residents in the Brush Canyon area. These impacts are less than significant with mitigation. Mitigation Measures: Traffic control plans should be prepared by a qualified professional engineer prior to construction. rraffic control plans should consider the ability of alternative routes to carry additional traffic and identify the least disruptive hours of construction site truck access routes and the type and location of warning signs,lights and other traffic control devices.Consideration should be given to maintaining access to commercial parking lots,private driveways and sidewalks,bikeways and equestrian trails,to the greatest extent feasible. rraffic control plans should comply with the Work Area Traffic Control Handbook and/or Manual of Traffic Controls as determined by each affected local agency to minimize any traffic and pedestrian hazards that exist during project construction. Encroachment permits for all work within public rights-of-way should be obtained from each involved agency prior to commencement of any construction.Agencies involved include Orange County,City of Anaheim,City of Yorba Linda,The Metropolitan Water District of Southern California,and Yorba Linda Water District. Other entities involved include Burlington Northern Santa Fe Railroad,Spnnt,and Southern California Edison.OCSD should comply with all traffic control ~e~uirements as identified by these agencies. 6 Mitigation Monitoring and Reporting Program Relocation and/or Protection of the Santa Ana River Intercept or Contract No.2-41 Resolution 00-18,Attachment B H:\wp.dta\eng\JOBS &CONTRACTSk2-4 I SARI REALIGNMENT\CEQA -ElR~Attach B MMRP for Alternative D.doc Mitigation Monitoring and Reporting Program for Alternative D 1rhe construction technique for the implementation of the proposed project,such as microtunnelirig,bore and jack,cut and cover with partial street closure,or cut and cover with full street closure should include consideration of the ability of the roadway system,both the street in question and alternate routes to carry existing traffic volumes during project construction.If necessary,adjacent parallel streets should be selected as alternate routes during the proposed construction period. LAs required by local jurisdictions,the proposed pipeline should be jacked under select major intersections to avoid traffic disruption and congestion. Public streets should generally be kept operational during construction,particularly during the morning and evening peak hours of traffic.Lane closures should be minimized during peak traffic hours. Public streets should be restored to a condition mutually agreed to between OCSD and the local jurisdictions prior to construction. ~CSD should attempt to schedule construction to occur jointly with other public works projects already planned in the affected locations,through careful coordination with all local agencies involved. Emergency service purveyors should be contacted and consulted to preclude the creation of unnecessary traffic bottlenecks that would seriously impede response ~imes.Additionally,measures to provide an adequate level of access to private properties should be maintained to allow delivery of emergency services. b CTA should be contacted when construction affects roadways that are part of the OCTA bus network. Short-term construction impacts and closures to the bikeway paralleling La Palma Avenue should be mitigated with detours,signage,flagmen and reconstruction s appropriate. Construction plans should be submitted to the Orange County’s Division of Harbors,Beaches and Parks/Trails Planning and Implementation for review and ~pproval prior to project construction. he bikeway paralleling La Palma Avenue impacted by construction activities should be restored to its original condition after construction. 7 Mitigation Monitoring and Reporting Program Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18,Attachment B H:\wp.dta\eng\JOBS &CONTRACTS\2-41 SARI REALIGNMENT~CEQA -EIR\Attach B MMRP for Alternative D.doc Mitigation Monitoring and Reporting Program for Alternative D IMPLEMENTATION PROCEDURE 1.Contract with qualified traffic control engineer to prepare a traffic control plan. 2.Ensure that issues highlighted in mitigation measures are included in traffic control plan. 3.Include within contract specifications the acquisition of all necessary encroachment permits. 4.Review list of required permits and verify adequacy prior to construction. 5.Conduct periodic site inspections including post-completion inspection. MONITORING AND REPORTING ACTIONS Maintain traffic control plan,permits, and construction schedule and methods for administrative record. Maintain record of site inspections including post-construction inspections. MONITORING RESPONSIBILITY OCSD MONITORING SCHEDULE Prior to and during construction. BIOLOGICAL RESOURCES Impacts: Temporary and permanent impacts to wildlife habitat would occur during construction. hese impacts are less than significant with mitigation. Mitigation Measures: Permanent impacts to wildlife habitat (not including giant reed forest,open water,or developed areas)should be mitigated at a 3:1 ratio. ~emporary impacts to wildlife habitat (not including giant reed forest,open water,or developed areas)should be mitigated at a 2:1 ratio. Mitigation for impacts to open water associated with the Santa Ana River should be determined in coordination with the Army Corps of Engineers and CDFG. 8 Mitigation Monitoring and Reporting Program Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18,Attachment B H:\wp.dta\eng\JOI3S &CONTRACTS\2-41 SARI REALIGNMENV~CEQA -EIR\Attach B MMRP for Alternative D.doc Mitigation Monitoring and Reporting Program for Alternative D ~ ~learing of vegetation associated with potential project design elements should be conducted outside of the nesting season (February 15th to September 30)to ~void violations of the Migratory Bird Treaty Act.In addition,pre-project surveys should be conducted within sensitive habitat areas proposed for clearing to ensure that sensitive species will not be harmed or harassed by clearing activities.In the event of scheduling delays or other unforeseen circumstances that would equire an exception to the breeding season restriction,the mitigation measure should require that a permitted monitoring biologist be present with authority to restrict all construction or vegetation clearing activities from within 500 feet of least Bell’s vireo,southwestern willow flycatcher or coastal California gnatcatcher. Prior to initiation of activities within the Santa Ana River,surveys for Santa Ana sucker should be conducted to determine whether the species is present within the impact area.Additionally,sedimentation and erosion control measures should be implemented to reduce the amount of impact to waters downstream of the proposed impact area.Mitigation for impacts to the Santa Ana sucker and its habitat should be determined in coordination with the U.S.Fish and Wildlife Service. IMPLEMENTATION PROCEDURE 1.Include proper mitigation measures in contract specifications. 2.Coordinate with the U.S.Fish and Wildlife Service regarding the potential impacts and mitigation measures for the Santa Ana sucker and its habitat. MONITORING AND REPORTING ACTIONS Maintain record of construction oversight for administrative record. Maintain record of communication and coordination with the U.S.Fish and Wildlife Service for the administrative record. MONITORING RESPONSIBILITY OCSD MONITORING SCHEDULE Prior to and during construction. Mitigation Monitoring and Reporting Program Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-4/ Resolution 00-18,Attachment B 9 H:\wp.dta\eng\JOBS &CONTRACTS\2-4 I SARI REALIGNMENT\CEQA -EIR\Attach B MMRP for Alternative D.doc Mitigation Monitoring and Reporting Program for Alternative 0 MINERAL RESOURCES !Impac~: Several thousand cubic yards of native materials (e.g.,sand,gravel,rock,etc.)will be required to construct the proposed facilities. his impact is less than significant with mitigation. Mitigation Measures: OCSD should specify that to the extent possible,locally derived or recycled asphalt should be used for the project. Lio the extent possible,locally excavated materials should be reused for backfill. rro the extent feasible,recycled materials should be used for bedding material,road fill,or other purposes where they meet the technical specifications. Local mineral resource suppliers should be utilized rather than importing materials from distant locations. IMPLEMENTATION PROCEDURE MONITORING AND REPORTING MONITORING RESPONSIBILITY MONITORING SCHEDULE 1.Include the prop:r mitig:tion ~:te OCSD Prior to and during construction. HAZARDS AND HAZARDOUS MATERIALS Impacts: During construction it would be necessary to relocate the bike path along La Palma Avenue to the adjoining surface street thus creating a potential public safety I hazard where bicyclists and motorists would be in close contact. Construction within the river would result in the greatest potential for any fuel spills to adversely impact water quality. rhese impacts are potentially significant with mitigation. 10 Mitigation Monitoring and Reporting Program Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18,Attachment B H:\wp.dta\eng\JOBS &CONTRACTS\2-41 SARI REALIGNMENT\CEQA -EIR\Attach B MMRP for Alternative D.doc Mitigation Monitoring and Reporting Program for Alternative D MONITORING AND REPORTING ACTIONS IMPLEMENTATION PROCEDURE MONITORING RESPONSIBILITY MONITORING SCHEDULE 1.Incorporate the appropriate Maintain record of coordination with OCSD Prior to and during construction. mitigation measures in the the affected jurisdictions for the I contract specifications.administrative record. 2.Prepare a Spill Prevention Control and Countermeasure Maintain record of construction Plan for the project. 3.Coordinate with the Orange oversight for the administrative record. County Public Facilities Resources Department; Orange County Flood Control District,Planning Section;The Metropolitan Water District of Southern California;Orange County Water District;and other affected jurisdictions. 4.Prepare a traffic management plan including those items highlighted in the mitigation measures. NOISE Impacts: Operation of equipment used during the pipeline construction would temporarily increase noise levels to well in excess of ambient noise levels. These impacts are less than significant with mitigation. Mitigation Measures: Construction activities should be limited to between the hours of 7:30 am and 5:30 p.m.and as necessary to comply with local ordinances.Any nighttime or ~weekend construction activities would be subject to local permitting. ~ll equipment used during construction should be muffled and maintained in good operating condition.All internal combustion engine driven equipment shall be ~ted with well-maintained mufflers in accordance with manufacturers recommendations. —-—----—---~-——---~ Mitigation Monitoring and Reporting Program Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18,Attachment B H:\wp.dta\eng\JOBS &CONTRACTS\2-41 SARI REALIGNMENT\CEQA -EIR\Attach B MMRP for Alternative D.doc Mitigation Monitoring and Reporting Program for Alternative D IMPLEMENTATION PROCEDURE MONITORING AND REPORTING MONITORING RESPONSIBILITY MONITORING SCHEDULE 1.Include compliance with local Maintain record of construction OCSD Prior to and during construction. no~e and construchon ordinances in oversight for the administrative 2.Provide construction oversight to ensure scope of work is carried out. ~PUBLIC SERVICES Impacts: here could be periods of lane closures,or at least,traffic control along La Palma Avenue and Camino de Bryant.This could delay response times by emergency personnel. his impact is less than significant with mitigation. ~Mitigation Measures: The contractor should provide a copy of its traffic control plan to the local police departments,the Orange County Sheriffs Department,and the California Highway Patrol. ccess to emergency facilities should be maintained on a 24-hour basis. renches should be immediately backfilled after pipeline installation.If installation is incomplete,steel trench plates should be used to cover open trenches. he contractor should ensure that adequate barriers are established to prevent pedestrians from entering open trenches in an active construction area.Warnings hould also be posted sufficient distances from the work area to allow pedestrians to cross the street at controlled intersections rather than having to jaywalk. ~ ~ ~ ~ .~~~ Mitigation Monitoring and Reporting Program Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18,Attachment B H:\wp.dta\eng\JOBS &CONTRACTS\2-41 SARI REALIGNMENT\CEQA -EIR\Attaeh B MMR.P for Alternative D.doc Mitigation Monitoring and Reporting Program for Alternative D UTILITIES AND SERVICE SYSTEMS Impacts: Ihe proposed pipelines would cross several utilities.These impacts are less than significant with mitigation. Mitigation Measures: detailed study identifying utilities along the pipeline routes should be conducted during the design stages of the project.For segments with adverse impacts,the following mitigation measures should be implemented. Utility excavation or encroachment permits should be received from the appropriate agencies.These permits would include mitigation measures to minimize utility Jisruption.OCSD and its contractor should comply with permit conditions and such conditions should be included in the contract specifications. Utility locations should be verified through field surveys. Detailed specifications should be prepared as part of the design process to include procedures for the excavation,support,and fill of areas around utility cables md pipelines.All affected utility services should be notified of OCSD’s construction plans and schedule.Arrangements should be made with these entities regarding protection,relocation,or temporary disconnection of services. In order to reduce potential impacts associated with utility conflicts,the following measures should be implemented in conjunction with those outlined above: Disconnected cables and pipelines should be promptly reconnected. 13 Mitigation Monitoring and Reporting Program Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18,Attachment B IMPLEMENTATION PROCEDURE 1.Include site safety measures in contract specifications. 2.Notify local authorities of construction schedule. 3.Maintain access to emergency facilities during construction activities including during non- working hours. 4.Periodically inspect construction site. MONITORING AND REPORTING MONITORING RESPONSIBILITY Maintain record of notifications for OCSD the administrative record. Maintain record of site inspections for the administrative record. MONITORING SCHEDULE During construction. H:\wp.dta\eng\JOBS &CONTRACTS\2-41 SARI REALIGNMENT\CEQA -EIR\Attach B MMRP for Alternative D.doc Mitigation Monitoring and Reporting Program for Alternative D ~Sb i ~of Health Services (bOHS)standards which require:1)a 10-foot horizontal separation between paraflel wastewater ~nd water mains and 2)one-foot vertical separation between perpendicular wastewater and water line crossings.In the event that the separation requirements ~annot be maintained,OCSD should obtain DOHS variance through provisions of water encasement,or other means deemed suitable by DOHS,and 3)encasing ~vater mains in protective sleeves where a new wastewater main crosses under or over an existing water main. he construction contractor should comply with OCSD requirements and specifications to protect existing utility lines. OCSD should coordinate with all affected agencies (e.g.,The Metropolitan Water District of Southern California,Southern California Edison Company,Southern California Gas Company,Orange County Flood Control District,Orange County Public Facilities Resources Department,etc.)to ensure compatibility and joint use easibility with existing and future projects. IMPLEMENTATION PROCEDURE MONITORING AND REPORTING MONITORING RESPONSIBILITY MONITORING SCHEDULE 1:identify utilities along the Maintain record of coordination for OCSD Prior to and during construction. alignment that could be the administrative record. 2.Coordinate with all affected Maintain record of construction the appropriate oversight for the administrative mitigation measures in the contract recor specifications. kESTHETICS mpacts: Construction operations would be highly visible to motorists traveling along La Palma Avenue and Camino de Bryant.These impacts are less than significant with mitigation. Mitigation Measures: OCSD should require the contractor(s)for the project to locate equipment staging areas in locations,which are not highly visible. bCSD should ensure that its contractors restore disturbed areas along the pipeline alignment to a condition mutually agreed to between OCSD and local ~urisdictions prior to construction such that short-term construction disturbance does not result in long-term visual impacts. ~Construction contractors should be required to keep construction and staging areas orderly,free of trash and debris.This requirement can be implemented by including construction site housekeeping measures in contract specifications and enforcing these provisions during construction by the on-site inspectors working 14 Mitigation Monitoring and Reporting Program Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18,Attachment B H:\wp.dta\eng\JOBS &CONTRACTS\2-41 SARI REALIGNMENT\CEQA -EIR\Attach B MMRP for Alternative D.doc Mitigation Monitoring and Reporting Program for Alternative D MONITORING AND REPORTING MONITORING RESPONSIBILITY MONITORING SCHEDULE IMPLEMENTATION PROCEDURE ACTIONS 1.Include construct on s~e Maintain specifications for OCSD Prior to and during construction. contract specifications. administrative record. 2.Conduct po:t-construction site Maintain record of site inspections for n pe on the administrative record. CULTURAL RESOURCES mpacts: rhe potential for unearthing archeological resources during construction appears to be limited due to the extensive prior modification of the area.Therefore, ultural resources impacts are anticipated to be insignificant. Viltigation Measures: Due to the remote possibility of exposing significant subsurface cultural resources,OCSD should implement the following prior to construction: Language should be included in the construction specifications alerting the contractors to the potential for subsurface cultural resources. Contractors and OCSD staff should receive an archeological orientation from a professional archeologist regarding the types of resources,which might be uncovered,and how to identify those resources during construction activities.The orientation should also cover procedures to follow in the case of any archeological discovery. If cultural resources are encountered at any time during project excavation,construction personnel should avoid altering these materials and their context until a qualified archeologist has evaluated the situation.Project personnel should not collect or retain cultural resources.Prehistoric resources include,but are not limited to,chert or obsidian flakes;projectile points;mortars and pestles;dark,friable soil containing shell and bone;dietary debris;heat-affected rock;or human burials.Historic resources include stone or adobe foundations or walls;structures and remains with square nails;and refuse deposits (glass,metal, wood,ceramics),often found in old wells and privies. In the event of accidental discovery or recognition of any human remains,the County Coroner should be notified immediately and construction activities halted.If the remains are found to be Native American,the Native American Heritage Commission should be notified within 24 hours.Guidelines of the Native American Heritage Commission should be adhered to in the treatment and disposition of the remains. 15 Mitigation Monitoring and Reporting Program Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18,Attachment B H:\wp.dta\eng\JOBS &CONTRACTS\2-41 SARI REALIGNMENT\CEQA -EIR\Attach B MMRP for Alternative D.doc Mitigation Monitoring and Reporting Program for Alternative D I MONITORING AND REPORTING IMPLEMENTATION PROCEDURE MONITORING RESPONSIBILITY MONITORING SCHEDULE ACTIONS 1.Contract with a qualified Maintain construction specifications OCSD Prior to and during construction. archeologist to conduct pre-for the administrative record. construction site surveys in any area of the proposed project Maintain record of site inspections for that has not been previously the administrative record. disturbed. 2.Include necessary actions in the contract specifications should archeological artifacts be discovered during construction activities. RECREATION Impacts: During construction,it would be necessary to temporarily close the bike path along La Palma Avenue and provide for an alternative bike lane or bike route along La Palma Avenue. Construction work within and adjacent to the Green River Golf Course could also have adverse visual and noise effects on golfers. These impacts are less than significant with mitigation. -~ -1~——--...... Mitigation Monitoring and Reporting Program Relocation and/or Protection of the Santa Ana River Interceptor Contract No.2-41 Resolution 00-18,Attachment B H:\wp.dta\eng\JOBS &CONTRACTS\2-4I SARI REALIGNMENT\CEQA -EIR\Attach B MMRP for Alternative D.doc Mitigation Monitoring and Reporting Program for Alternative D Mitigation Measures: OCSD should prepare a bike path detour and bicycle traffic management plan,which would be included in the plans and specifications for the Relocation and Protection of the Santa Ana River Interceptor project.The plan should include the following items: Provision of adequate work areas. Signing. Application and removal of pavement markings. Construction scheduling. Placement and maintenance of safety devices. Roadway lighting,if necessary. Traffic regulations. Surveillance and inspection. MONITORING AND REPORTING IMPLEMENTATION PROCEDURE MONITORING RESPONSIBILITY MONITORING SCHEDULE ACTIONS 1.Contract with a qualified Maintain construction specifications OCSD Prior to and during construction. professional engineer to for the administrative record. prepare a bicycle traffic management plan.Maintain record of site inspections for 2.Insure that the plan includes the the administrative record. items highlighted in the mitigation measures. 3.Make routine site inspections. - 1~7~~~ Mitigation Monitoring and Reporting Program Relocation and/or Protection of the Santa Ana River Interceptor - Contract No.2-41 Resolution 00-18,Attachment B H:\wp.dta\eng\JOBS &CONTRACTS\2-41 SARI REALIGNMENT\CEQA -EIR\Attaeh B MMRP for Alternative D.doc