Technical Report 13 (translated)

3,8 Analysis of Sustainability Residual WatersThe Project “Construcción of Planta de Tratamiento de Residual Aguas Taboada andSubmarine emissary assures in direct form the well-being the population the district andthe province of the Callao and indirectly to the districts that conform their area ofdrainage.a. The institutional adjustments anticipated for the phases of operation and preoperationof the project.It is not required of special institutional adjustments since the project will be aposition of organizations deprived, except for opposite dispositions SEDAPAL counts ona structure to make the phases of operation and pre-operation of the project.b. The organization in charge of the project, her capacity of management in hisstages of investment and operation.As far as the execution of the stages of the cycle of the project, SEDAPAL has hadexperience with other projects in which one contracts the services of companiesconsultants and/or contractors. During the cycle of the project, SEDAPAL will offer andit will support, with information and personnel described for coordinations einspection necessary.It has been made diverse managements for the additional acquisition of lands, alreadythat at the present time in the zone in where one goes away to locate Planta de Tratamiento ofResidual waters Taboada we counted on 10 hectares of property landof SEDAPAL.In the stage of Pre Investment, the formulation, pursuit and control of the Profile,Study of Pre Feasibility and Feasibility study of the project will be made withspecialized own personnel.In the stage of Investment of the project the Definitive Study and the call forexecution of Obra, will be in charge of PRO INVESTMENT. The operation stageof the project it will be in charge of private organizations.c. The availability of resourcesSEDAPAL will finance with own resources the totality of the phase of Pre Investment,Previous studies and Consultancies of the Project and as far as the Definitive Study andcall of the Execution of Works will be in charge of PRO INVESTMENT.Given the magnitude of the investment that is needed to solve the problematic one ofto arrange in the sea and the river residual water without treatment, is necessaryintervention and the financial commitment of the Peruvian State, given the impossibilityof SEDAPAL in assuming by its magnitude the service of the debt of the financingof works.d. The participation of the beneficiariesPROFILE: CONSTRUCTION OF THE PLANT OF RESIDUAL WATER TREATMENTTABOADA And SUBMARINE EMISSARY - DISTRICT And PROVINCE Of the CALLAO157Given the technical nature of the project, the beneficiaries do not participate informulation nor execution of the project, but participate in the measurement that doessuitable use of the system, avoiding to throw inorganic solid remainders,toxic substances and other elements that make difficult the operation actions andmaintenance.e. The tariffs must calculate under two scenes:- That covers the costs with investment, operation and maintenance(to see analysis of the tariff)- That covers the costs with operation and maintenance(to see analysis of the tariff)- the tariffs must cover at least the costs with operation andmaintenanceThe income by tariff concept are always greater to the costs ofoperation and maintenance throughout the period of evaluation.f. To analyze the capacity of payment of the population through the relationingreso/tarifaIn the Project “Construcción of Planta de Tratamiento de Residual AguasTaboada and Submarine Emisario, district and province of the Callao” the familiar entranceaverage is of S/. 642/month/house, therefore the population would be paying:􀂾 In Residual Water TreatmentI calculate of Incremental Tarifa Average of Long Term (T. D. 9%)Unit cost of Investment + CO & M = 0,32 15 Xs = 4,67 (To see Picture no. 3,56)S/. 4,67/642 = 0,73% (T.D. 9%)I calculate of Incremental Tarifa Average of Long Term (T. D. 14%)Unit cost of Investment + CO & M = 0,42 15 Xs = 6,19 (To see Picture no. 3,57)S/. 6,19/642 = 0,96% (T.D. 14%)􀂾 In the Service of Agua and Alcant. + Residual Water TreatmentData:Volume of water-drainage: 15 (m3/mes/viv.)Tariff present domestic servant: 1.060 (S/. /m3)(15 Xs 1,060) + (15 Xs 0,42) T D. 14% =15.9 (serv. water and alcant.) + 6,19 (treatment) = 22,09 Suns by m3/mes/viv.Limit of Capacity of Payment: S/. 642 Xs 0,05 = 32,10 Suns by m3/mes/viv.In conclusion:- the population in residual water treatment would be paying 4,67 Sunsby m3/mes/viv. (0.73%) or 6,19 Suns by m3/mes/viv. (0.96%) with a rate ofdiscount of 9% and 14% respectively, and 22,09 Suns by m3/mes/viv.including the service of water and sewage system.PROFILE: CONSTRUCTION OF THE PLANT OF RESIDUAL WATER TREATMENTTABOADA And SUBMARINE EMISSARY - DISTRICT And PROVINCE Of the CALLAO158- Therefore, the population will be in capacity to pay to S/. 32,10 Suns bym3/mes/viv. in good condition of water and sewage system including water treatmentresidual and 5% of the total of their income would be paying.Note:According to the Organization of Salud (OPS) the level of familiar cost destined topayment of services of potable water and sewage system does not have to surpass 5% offamiliar entrance.• Analysis of the tariffFor him I calculate of the tariff was necessary to make the update of the costsincreméntales (Investment, CO & M) and the increméntales volumes of water-drainage,in order to find the ratio between both values and of considering the Incremental CostAverage of Largo Plazo (CIP) in terms of monetary units by m3.- Analysis of the tariff considering the Costs of Investment and CO & M.CIP =CIP: Incremental cost average in the long term- Analysis of the tariff considering single CO & M.CIP =CIP: Incremental cost average in the long termInv +O & M(1 + r)nOr & M(1 + r)nQ Increm(1 + r)nQ Increm(1 + r)n≤ Inv +O & M: Present value of Costs of I, Or & M(1 + r)n≤ Q Increm: Present value of the consumptions m3(1 + r)n≤ Or & M: Present value of costs of Or & M(1 + r)n≤ Q Increm: Present value of the consumptions m3(1 + r)nPROFILE: CONSTRUCTION OF THE PLANT OF RESIDUAL WATER TREATMENTTABOADA And SUBMARINE EMISSARY - DISTRICT And PROVINCE Of the CALLAO159Result of the Analysis of TarifaThe families benefitted with the Construction of the Plant of Treatment ofResidual waters Taboada and Submarine Emisario count on capacity stopsto pay the tariff of Treatment of Water-drainages.The analysis of the tariff has been made with information of the project, the costs ofinvestment and CO & Ms of the system have been analyzed to prices of the market. Thusas the volume of water-drainages of the population. To see Pictures Us. 3.56 and 3.57I calculate of Incremental Tarifa Average of Long Term.The rate of 9% discount has been used normada by the SUNASS and it is hadalso used for evaluation effect the rate of 14% discount usedin the economic evaluation del project, for the tarifario analysis, has been consideredthe cost of investment and the cost of operation and maintenance of Plant ofTreatment of Residual Waters and the Submarine Emissary, with the following onesresults:- S/. 0,32 corresponds to the investment cost more operation and maintenance witha rate of discount of 9% and S/. 0,43 considers costs with one suchrate of 14% discount. To see Picture no. 3,55 Flow To consider Tarifa ofServices.- the tariff to cover the total of costs of investment plus the operation costs andmaintenance, would reach to S/. 4,75/family to the month, considering that the familyits volume of water-drainage in average is of 15 m3/month, with a rate ofdiscount of 9% and S/. 6,26/families to the month, with a rate of discount of14%. To see Picture no. 3,58 Cost of the Service, Capacity of the Service andRequirement of Subsidies.- the capacity of payment of the families of the population of the zone of the project,month promotes to S/. 32,10 suns /, considering that according to information ofproject, the entrance monthly average/family is considered in S/. 642. To see PicturesUs. 3.56 and 3,57 Calculo of Incremental Tarifa Average of Long Term.PROFILE: CONSTRUCTION OF THE PLANT OF RESIDUAL WATER TREATMENTTABOADA And SUBMARINE EMISSARY - DISTRICT And PROVINCE Of the CALLAO160Picture No. 3.55Own ElaborationPROFILE: CONSTRUCTION OF THE PLANT OF RESIDUAL WATER TREATMENTTABOADA And SUBMARINE EMISSARY - DISTRICT And PROVINCE Of the CALLAO161Picture No. 3.56Own ElaborationPROFILE: CONSTRUCTION OF THE PLANT OF RESIDUAL WATER TREATMENTTABOADA And SUBMARINE EMISSARY - DISTRICT And PROVINCE Of the CALLAO162Picture No. 3.57Own ElaborationPROFILE: CONSTRUCTION OF THE PLANT OF RESIDUAL WATER TREATMENTTABOADA And SUBMARINE EMISSARY - DISTRICT And PROVINCE Of the CALLAO163Picture No. 3.58Own ElaborationRATE OF DISCOUNT 9%To INVESTMENT + OPERATION And MAINTENANCE 880.234.681 2.721.171.282 0,32 4,75 32,1 IFB COST OF OPERATION And MAINTENANCE 48.072.646 2.721.171.282 0,02 0,26 32,1 IFAVERAGE BY M32 Considering the volume of water-drainage of 15 m3/viv/mes3 Considering a monthly entrance by family of S/. 642RATE OF DISCOUNT 14%To INVESTMENT + OPERATION And MAINTENANCE 749.439.682 1.758.515.604 0,43 6,26 32,1 IFB COST OF OPERATION And MAINTENANCE 29.625.742 1.758.515.604 0,02 0,25 32,1 IFAVERAGE BY M32 Considering the volume of water-drainage of 15 m3/viv/mes3 Considering a monthly entrance by family of S/. 642COST Of the SERVICE, CAPACITY Of the SERVICE And REQUIREMENT OF SUBSIDIESS/./m3(1)Present value ofTotal of Costs(S/.)Present ValueVolume ofWater-drainage(m3)Suns by m3Tarifa/conex/month S/.(2)=(1)x15 m3Capacity of payment/family/month (S/.)(3)=S/. 642X0.05Suns by m3Tarifa/conex/month S/.(2)=(1)x15 m3Capacity of payment/family/month (S/.)(3)=S/. 642X0.05She existscapacity ofpaymentMARGINAL COST OF LONG TERMPresent value ofTotal of Costs(S/.)Present ValueVolume ofWater-drainage(m3)S/./m3(1)It existscapacity ofpaymentMARGINAL COST OF LONG TERMPROFILE: CONSTRUCTION OF THE PLANT OF RESIDUAL WATER TREATMENTTABOADA And SUBMARINE EMISSARY - DISTRICT And PROVINCE Of the CALLAO1643,9 Environmental impactConsidered the environmental implications of the project as a whole are positive,since the same one, is directed to assure a decontamination waterscoasts and of beaches, in this case of the bath of the Callao, that has the visit ofswimmers in the summer, who at the moment see affected their health by the quality of the water ofsea. In the zone of the sea of the Callao there is artisan fishing activity, the product issold in small markets in the area with the consequent danger of diseasesgastrointestinales for the consumers, situation that could be reverted and improvedafter the implementation of the project.It is possible to not only consider in addition this project like the complementación tocleaning of the North zone of Lima, but also like part of the set of worksdestined to adjust one capital of almost 8 million inhabitants with projections to10 million in 2025.The marine contamination in the Bay of the Callao and the zone of unloading is recognizedlike a negative impact within the Environmental Plan of SEDAPAL 2006 - 2010. measurement of propose mitigación by the Company is the residual water derivationtowards the plant of Taboada treatment, and later to its treatment, the conductionout to sea through the submarine emissary.The analysis of environmental impact contemplates the biophysic and socioeconomic componentsin the stages of planning-construction and operation, as much of the plant of treatmentlike of the submarine emissary.The two more significant potential implications of this project consist ofimpact of the pen of dispersion on the marine ecosystem (biophysic effects andsocioeconomic) during the operation, and the reinstalación of the population of Pacific ofVilla during the phase of planning-construction.The other impacts during the construction are easily mitigables by means of measuresattenuation standards (erosion, sedimentation, noise, dust, road traffic, scents, betweenothers)It is important to indicate that the project, besides to create better conditions fortourism and the real estate market of the coastal zone, will benefit to several sectorsunderprivileged of the city, giving them access to its population to a recreational use withsmaller risks for the health.Studies detailed about some components are required to be able to advancemeasures of specific mitigación or compensation.In the next sections the environmental impacts are identified and evaluated potentialof the project during the phases of construction and operation. Next they are described ofsynthetic way more excellent the anticipated environmental implications.Environmental implications related to the planning-construction• Coastal and marine sedimentation and its effects on the aquatic fauna:− During the construction, the environmental impacts are related to the lossor degradation of the habitat originated by the sedimentation. This alteration ofhabitat during the installation of the marine emissary will be located, temporary andlimited zones little extended. Esteem that the direct influences oncommunities of bentos and fish will be quickly reversible.− It is anticipated that the sedimentation generated by the draining of the site ofconstruction of the treatment plant will be located and reversible and that it will havea slight impact on the aquatic fauna. According to the characteristics of the bentos,it anticipates unites fast recolonización of the altered zone.PROFILE: CONSTRUCTION OF THE PLANT OF RESIDUAL WATER TREATMENTTABOADA And SUBMARINE EMISSARY - DISTRICT And PROVINCE Of the CALLAO165• Use and economy: The project will have an important impact on the economythe premises. During the construction, one will be due to propose in priority the uses topopulation that lives in the proximity of the project.• Dust, noise, remainders of construction, security and hygiene:− Few receivers (population) in the proximity of the construction site exist. EIA will have to mention the standard measures of mitigación that will haveto implement the contractors to neutralize the annoyances as well asprocedures of environmental supervision of works for the same security ofthe population.− Norms and safety measures will also be implemented forworkers and the disposition of the remainders.• Transit: In the Study of Environmental Impact, one will be due to look for the best routesof access for the transport of material, or by land or navy, withintention to diminish the impacts on the population and the risks ofaccidents.• Archaeological rest: In the zone archaeological rest do not exist.• Protected or sensible zones: The site of the work is not a protected zone nora sensible zone. It lacks flora and fauna.• Acceptance and knowledge of the project: It is necessary that they are madeconsultations to the main actors in the project, as well as consultations and diffusionof information to the civil society during the EIA.Environmental implications related to the operation:• Effects on the public health:− The requirements in recreation areas, like beaches, are based onprevention of the contact between the pathogenic people and organisms, likeColiformes, that can be present when they are affected by residual water withouttreatment.− Also there are evidences of which the tifoidea and the hepatitis are trasmiten by seafoodoriginating of contaminated waters, these concentrate microbes, due tonatural filtration of great amounts of contaminated water.− The impact on the health is the same justification of the project, as much by contactdirect with the water, like by the ingestion of fish and seafood affected byfecales or total, parasitic concentrations of Coliformes or heavy metals.− In which it is related to the disposition of the remainders of the plant oftreatment, will be transferred to an authorized sanitary filling. The EIA will verifyas they are apt to receive them. As they are domestic remainders, they will not be requiredspecial nor particular measures for its transport and disposition.• Effects on the marine quality of the water and ecosystems: Studiesrecent they indicate that in places where great water volumes unloadresidual which they contain significant volumes of industrial remainders, the matterin particles it can cause negative impacts when being accumulated in sediments.PROFILE: CONSTRUCTION OF THE PLANT OF RESIDUAL WATER TREATMENTTABOADA And SUBMARINE EMISSARY - DISTRICT And PROVINCE Of the CALLAO166− Toxic substances: Probably the toxic substances that they can producenegative effects, are the soluble ones in fats of the body like DDT and PCB. analyses of the operation of the diffuser, show that the initial dilution would have to varyof between 112 and 350 to 1, determining a value average from 200 to 1. The dilutionit will substantially reduce the concentration of any toxic substance, at levelsbelow that they can cause damage. He is recommendable, nevertheless,continuous monitoreo for the control of the chemical substances.− Nutrientes/Plancton/Eutrofización: In the initial dilution the nutrients in the unloadingof the residual water like nitrogen and phosphorus, they will be reduced to concentrations avery low values; which, is going to prevent the possibility with an extensive production ofplancton and phenomena of eutrofización.The impact smaller than will be permanent, is the one that could exist in the zone ofit mixes of the unloading area; nevertheless the design must anticipate that the penshe will remain submerged, with the exception of short periods in the winter. Withoutembargo, the proportion of the dilution will have to cause that this one impact isinsignificant.• Effects on the aquatic fauna and the fishing: The artisan fishing representsmain economic activity in the zone. Studies are being made at the momentadditional of bathymetry, currents, quality of sediments and quality of the waterin order to determine the characteristics of the diffuser, the pen of dilution and the zone ofit mixes (with modeling). These data will allow the evaluation of the impacts ofefluente on the average sailor. Nevertheless, besides to advance the cleaningof coastal waters and therefore of the contamination of the seafood and bivalvosthat they are fished in the zone, a recovery of several marinocosteras areas is anticipatedat the moment contaminated (among others in the Chira or the Bay ofMiraflores), with potential to develop acuicultura projects.• Effects on the local economy: The advance effects on the economythe premises are highly positive since the project would allow the improvement ofquality of beaches of the coast, which influences in an economic revaluation ofthe lands, tourist advantage and direct and indirect creation of useslike result of the investments.Measures of Mitigación• Quality of Water: The awaited impact is positive, by the preliminary treatmentadvanced in which it is hoped to retain the 100% of heavy solids, greasy andoils by means of grates, desarenadores and use of micro grates diminishing in10% the DBO.• Quality of the air: Adjustment of the project to Environmental Gui'a for works ofconstruction (environmental clauses)• Contamination aquatic fauna: It is required to elaborate a sampling programin the plan of handling of the EIA to make the pursuit of the bioacumuladores organismsand its transport to traverse the nutritional chain towards the fish.• Fishing: The improvement of quality of the water supposes a beneficial impact forseafood, fish and other species commercially important in the stage ofoperation. During the construction the fishing area will be due to restrict.PROFILE: CONSTRUCTION OF THE PLANT OF RESIDUAL WATER TREATMENTTABOADA And SUBMARINE EMISSARY - DISTRICT And PROVINCE Of the CALLAO167• Tourism and recreation: The zone of construction of the plant and the emissary noit has visit of veraneantes. In the operation stage the effect is extremelypositive, since the beach of the Callao will be in conditions for beingvisited.• Archaeological patrimony and points of interest: To delimit the intangible area andon the base of this demarcation, to ask for INC. the emission of a certificate.To physically delimit the area.• SEDAPAL: Technical qualification of its personnel for the pursuit of the planenvironmental and institutional fortification.• Population:− Elaboration of a Plan of Reinstalación and Compensacio'n arranged withaffected population;• Health: It is obvious that the project will have a positive impact on the health ofpopulation. Therefore, the environmental evaluation will be limited to review the present oneprogram of environmental pursuit of marine and coastal watersimplemented by INGESA and to propose improvements if outside necessary.• Sonic climate: Application of standard measures for noise reduction.• Uses: To thus favor the hiring of the people bordering to the projectlike that they will be reasentados and to make publicity on the project.• Earth use: To coordinate with the Mayorship, to inform and to consult withpopulation.On the other hand, the Plan will be based on the following principles demanded byinternational organisms of financing:• Communitarian Participation: the preferences of the populations that will becollected during the consultations, they will be taken in consideration duringall the process of planning as well as during the implantation of the project.In addition, the recognition of specific the cultural and legal aspects toPeru will be integrated to the Plan.• Resolution friendly and opened of the controversies or conflicts: population will participate in the planning of the Plan and also they will participateintegrally during the implantation of the project.• Pursuit in continuous: SEDAPAL will have to restore a system ofcontrol and pursuit in order to be always in measurement to identifyany problem on time and to solve it more soon possible.PROFILE: CONSTRUCTION OF THE PLANT OF RESIDUAL WATER TREATMENTTABOADA And SUBMARINE EMISSARY - DISTRICT And PROVINCE Of the CALLAO1683,10 Selection of AlternativesIn order to select the best alternative, one has considered the results ofSocial evaluation, Analysis of Sensitivity, Sustainability and Environmental impact.From the results of the Social Evaluation for the Costo/Efectividad componentit has selected alternative 2, to have the indicating minor of Costo/Efectividad (IT HOISTS)The results of the indicators of evaluation for the selection of the alternative forresidual water component is in the following picture:Picture No. 3.59Own Elaboration3,11 FinancingThe financing of the Project “Construcción of Planta de Tratamiento de AguasResidual Taboada, district and province of the Callao” it has been projected fromcosts of investment to private prices analyzed by SEDAPAL.The Studies programmed Previos and Consultorias in 2006 and 2007 will financewith own resources and they will be in charge of SEDAPAL, the Definitive Study and the Executionof Obra they will be in charge of PRO INVESTMENT.The total amount of the project to finance promotes to S/. 1,101’438,631 (USS 333’769,282),project will be financed with external credits. To see following picture:Picture No. 3.60Own Elaboration1 2(Selected)Social evaluation withoutincrease of the amount ofinvestmentI.C.E 14% (suns) 82 39Sensitivity of the Evaluation:Increase of the amount ofinvestment in 20%I.C.E 14% (suns) 89 43Assured AssuredNo NoneSelection of Residual Water AlternativesIndicators of Evaluation for the Selection of AlternativesSustainabilityEnvironmental ImpactIndice de Costo de EfectividadAlternatives(2005-2006) (2006-2007) (2007-2008) (2008-2009) (2009-2010)Plant of Treatment 0 5.768.868 7.211.084 131.422.550 215.795.447 360.197.949 109,150,894Submarine Emissary 0 8.522.107 10.652.634 646.512.983 205.942.866 871.630.591 264,130,482Total 0 14.290.975 17.863.719 777.935.533 421.738.314 1.231.828.540 373,281,376Note: Information bases for the Bank of Projects 24.06.06T.C. USS = S/. 3.3PROPOSAL OF FINANCING PER PERIODS To PRIVATE PRICESProject: "Construction of Planta de Tratamiento de Residual Aguas Taboada and Submarine Emisario,province and district of the Callao "INVESTMENTTOTALUSSINVESTMENTTOTALS/.COST OF RESIDUAL WATER INVESTMENTDescriptionPROFILE: CONSTRUCTION OF THE PLANT OF RESIDUAL WATER TREATMENTTABOADA And SUBMARINE EMISSARY - DISTRICT And PROVINCE Of the CALLAO1693.12 Logical FrameSUMMARY OF AVERAGE INDICATING OBJECTIVES OF SUPPOSED VERIFICACIONGoals to the year 2010 1.-EXPEDIENTE TECNICO1. - CONSTRUCTION OF PLANT OFADVANCED PRELIMINARY TREATMENTOF RESIDUAL WATERS, Qp 12.5 m3/s 1 Glb Thousands S/. 229.808 2.-CUADERNO OF WORK1. - INSTALLATION OF AN EMISSARYSUBMARINE OF 8000 ms OF LENGTH 1 Glb Thousands S/. 871.631 3.-VALORIZACIONES OF WORK4.-LIQUIDACION OF WORKTHE 10%DE THE POBLACIONPASA OF LASITUACIONOF POVERTY To NoncPoor To The SECOND YEAR OFCULMINATED THE PROJECT.SURVEYS To HOMES (INEI,ONG AND/OR MUNICIPALITIES)INFORMATION OF THE IMARPE AND/ORDIGESA4. - FROM YEAR 2010, THE DBO OF THE AFFLUENTESTEEM THAT DISMINUIRA IN 50%, TOREGISTERED IN THE 2004 WHICH WAS MAS OF300 mg/l.3. - FROM YEAR 2010 THE 100% OF WATERSRESIDUAL COLLECTED IN THE SUBSYSTEMTABOADA ARE TREATEDTO YEAR 2012, THE CONCENTRATION OFCOLIFORMES FECALES IS REDUCED IN A 70%IN THE COASTAL ZONE OF THE BAHIA OF THE CALLAOAnd MAGDALENA1. - FROM YEAR 2010, THE DISPOSITION OFTREATED RESIDUAL WATERS A IS MADE8000 ms Of the COASTAL EDGE OF the BAHIA OfCALLAO1.-LOS PAYMENTSBUDGETARY NOTTHEY INTERRUPT2.-NO ARE DISTURBEDCONSTRUCTION WORKINGS1. - REPORTS OF THE EQUIPMENTHARVESTING And DISPOSITIONEND - SEDAPAL2. - INFORMATION OF THE EQUIPMENTOPERATIVE PLANNING AndFINANCIER - SEDAPAL1.-EQUIPO OF OPERATION AndMAINTENANCE MAKESSUITABLE OPERATION AndMAINTENANCE OF THE SYSTEMACTIONS AIMIMPROVEMENT OF THE CONDITIONS OFWELL-BEING OF THE POPULATIONPROPOSITOIMPROVEMENT FISICO And ECOLOGICOOF THE MARINE COAST IN THE BAHIA OFCALLAO And San MiguelCOMPONENTSRESIDUAL WATER POURINGIN GREAT REMOTE VOLUMENESOF THE COASTSUITABLE CAPACITY OFRESIDUAL WATER TREATMENTPROFILE: CONSTRUCTION OF THE PLANT OF RESIDUAL WATER TREATMENTTABOADA And SUBMARINE EMISSARY - DISTRICT And PROVINCE Of the CALLAO170I CAPITULATE IVCONCLUSIONS And RECOMMENDATIONSCONCLUSIONS􀂃 This project will allow to the treatment of the water-drainages of a total of 5’346,888 inhabitantsdistributed in 27 districts to year 2025, thus contributing to the improvement of the quality of life and athe sanitary conditions of the district and province of the Callao as well as the districts thatthey include/understand the area of drainage of the project.􀂃 Two technical alternatives of solution to the problem set out, alternative 1 corresponds aPlanta de Primary Tratamiento, whereas alternative 2 corresponds to Planta ofAdvanced Preliminary Treatment. Finally alternative 2 is selected to have the minorIndice Cost – Effectiveness, both alternatives consider the same Emissary Submarine.􀂃 The total cost of the investment of the Project to prices deprived for alternative 2 is ofS/. 1,101’438,631 including IGV, of which S/. 229’808,040 corresponds to Planta ofTreatment of Residual Waters and S/. 871’630,591 to the Submarine Emissary.􀂃 The cost of the first stage of the project is of S/. 28.077.206 (S/. 12’478,758 corresponds athe costs of the Previous Studies, Consultancies and S/. 15’598,448 Definitive Study ofProject) the cost of the second stage of the project is of S/. 1,073’361,424 corresponds toDesign, Supervision and Construction of Works.􀂃 To social prices, this total investment is of the order of the S/. 945’719,212. Esteem thatthese investments will be made between years 2006 and 2010.􀂃 Like result of the made social evaluation to Planta de Tratamiento de AguasResidual Taboada, the cost of effectiveness by inhabitant is of S/. 39 by beneficiary and ofS/. 93 by beneficiary for the Submarine Emissary.􀂃 As far as the benefits the project, allows the reduction of the diseasesrelated to the contact to residual waters or the originated ones by consumption of resourcescontaminated hidrobiológicos.􀂃 The families benefitted with the Construction of the Plant of Water TreatmentResidual Taboada and Submarine Emisario count on capacity to pay the tariff ofTreatment of Water-drainages, assuring the financial sustainability the project.􀂃 The Project “Construcción of Planta de Tratamiento de Residual Aguas Taboada andSubmarine emissary district and province of the Callao” he is viable from the technical point of view,economic, social and environmental.RECOMMENDATIONS􀂃 It is recommended within the framework to approve the present Project at level of profile of the National Systemof Public Investment.􀂃 To assure that in the budget of SEDAPAL investments 2006-2007 they are briefedfinancial resources that guarantee the elaboration of the studies and laterexecute corresponding works.􀂃 It is recommended that in the following levels of study (pre-feasibility and feasibility)consider:PROFILE: CONSTRUCTION OF THE PLANT OF RESIDUAL WATER TREATMENTTABOADA And SUBMARINE EMISSARY - DISTRICT And PROVINCE Of the CALLAO171􀂾 To make a rigorous analysis of the costs of investment and operation and maintenanceof Planta de Tratamiento de Residual Aguas Taboada and of the Submarine Emissary.􀂾 To incorporate present information on physical, chemical and bacteriological parameters ofresidual waters that are collected through the collectors who will unload toPlant of Taboada Treatment.􀂾 To analyze in detail the originating flows of water-drainage of clandestine connections,overflows of reservorios, wells and cisterns, infiltrations and other flows noncontrolled thatthey unload in the sewage system system, that indicates in the picture 3.1à of the presentstudy.􀂾 To analyze and to sharpen the selected alternative, as far as the sizing ofcomponents of the plant of treatment, as well as of the submarine emissary (diameter,length, depth and material of the pipe to use).􀂾 To analyze the application of other technologies of treatment that allow reuso of the watertreated in agriculture (as in the zone bordering to the airport or zones you make bristle inWindow).􀂾 To study the possibility of the use of the treatment plants that have a level ofappropriate treatment to unload waters treated through a submarine emissaryshorter, given the difficulties that the construction of a long emissary implies.