Philippines - Manila Second Sewerage Project : environmental impact assessment (Vol. 12 of 27) : Initial Environmental Examination of Project no. 10 ; Palacol lot D, Taguig, Metro Manila

Metropolitan Waterworks and Sewerage System Manila Water Company, Inc. E94 Volume 12 Initial Environmental Examination of the Community Sanitation Project Manila Second Sewerage Project IBRD 4019 Project No. 10 PALACOL LOT D Taguig, Metro Manila Prepared by: Manila Water Company, Inc. 489 Katipunan Rd, Balara, Quezon City December 2001 - Fl EC!Y dpw I L Cu" r I a-  TABLE OF CONTENTS PAGE NO. Executive Summary 7 1.0PROJECT DESCRIPTION 1.1 BASIC PROJECT INFORMATION 11 1.2 PROJECT LOCATION 12 1.3 PROJECT RATIONALE 12 1.4DESCRIPTION OF PROJECT PHASES 1 .4.1 Pre-Operational/Construction Phase 1.4.1.1 Construction Plan 14 1.4.1.2 Total Surface Development Block 16 1.4.1.3 Estimate Total Area to be opened for Civil Works 16 1.4.1.4 Major Openings and Construction Activities 16 1.4.1.5 Types of Equipment to be Used 18 1.4.1.6 Source of Construction Materials and Facilities 18 1.4.1.7 Support Services and Facilities Requirements and Availability 1 8 1.4.1.8 Estimate of Total Cut Soil Volume 18 1.4.1.9 Total Manpower Requirement 19 1.4.2 Operational Phase 1.4.2.1 Project Operation Schedule and Duration 19 1.4.2.2 Process Technology and Activities 19 1.4.2.3 Waste Production Scheme 21 1.4.2.4 Manpower Requirement 21 1.4.3 Abandonment Phase 23 2.0 BASELINE ENVIRONMENTAL CONDITIONS 2.1 STUDY METHODOLOGY 2.2 LAND 2.2.1 Land Resource Utilization 23 2  2.2.2 Physiography and Geology 23 2.2.3 Vegetation and Wildlife 23 2.2.4 Land Acquisition Assessment 25 2.3 WATER 2.3.1 Inventory of Water Bodies 25 2.3.2 Water Quality (Surface/Ground) 25 2.4AIR 26 2.5 PEOPLE 2.5.1 Population/Beneficiary 26 2.5.2 ProjectAffected Persons 26 3.0 PROJECT ALTERNATIVES 26 4.0 IMPACT ASSESSMENT 4.1 IMPACT IDENTIFICATION 4.1.1 Impacts During Construction Phase 28 4.1.2 Impact During Operation Phase 29 4.2 IMPACT PREDICTION AND EVALUATION 32 4.3 UNAVOIDABLE AND RESIDUAL IMPACTS 32 5.0 ENVIRONMENTAL MANAGEMENT PLAN 5.1 IMPACTS MITIGATION / ENHANCEMENT PLAN 32 5.2 ENVIRONMENTAL MONITORING ACTION PLAN 37 6.OCOMMUNITY CONSULTATION PROCESS 38  LIST OF FIGURES 1 Location Map of BLC 13 2 Proposed Implementation Schedule 15 3 Proposed STP Site Layout 17 4 General Treatment Process Scheme 22 5 Photograph of STP site 24 4  LIST OF TABLES 1 Typical Analysis of Septic Tank Effluent Quality 14 2 Estimates of Soil Excavation Volumes 19 3 Influent Flow Characteristics 20 4 DENR Effluent Parameters for Class C Waters 20 5 Sources and List of Potential Environmental 27 Impacts 6 Typical Noise Emissions of Construction 29 Equipment at Various Distances from Source in dB(A) 7 Sludge Production of Various Wastewater 30 Treatment Processes 8 Summary of Assessment of Environmental Issues 31 / Impacts 9 Environmental Management Plan 32 10 Environmental Monitoring Action Plan 37 11 Institutional Monitoring 38 5  LIST OF ANNEXES 1 Manila Water Company STARRT Card for Monitoring Construction Works 2 Wastewater Quality Monitoring Schedule 3 Environmental Compliance Certificate (ECC) NCR-2000-12- 11-0262-211 4 Manila Water PCO Report Format 5 Sample Monitoring Sheet for Effluent Quality 6 Endorsement from the Barangay Captain 7 Memorandum of Agreement (MOA) between Manila Water Company and the Bases Conversion Development Authority (BCDA)  EXECUTIVE SUMMARY The proposed project for Palacol Lot D is one of the twenty-three (23) sub- projects of the Community Sanitation Project Phase 1, which is a component of the World Bank-assisted Manila Second Sewerage Project (MSSP). The project is intended to reduce the current wastewater pollution discharged to the Laguna Lake by the seven hundred and eighty (780) households in Palacol Lot D. The project involves the improvement of the sewerage system in the compound. Specifically, the project includes the installation of new sewer lines to intercept combined sewage and wastewater flows from the storm drain and septic tanks. An underground sewage treatment plant (STP) will be constructed to treat the wastewater flows. A Memorandum of Agreement (MOA) between Manila Water Company and the Bases Conversion Development Authority (BCDA) will be executed for the project. In conformity with the requirements of the Department of Environment and Natural Resources (DENR), an Environmental Compliance Certificate (ECC) NCR-2000-12-11-0262-211 issued pursuant to P.D. 1586 was secured for the project. I. BASELINE ENVIRONMENTAL CONDITIONS Palacol Lot D, also known as Project Dreamland/Lupang Katuparan was developed by the Bases Conversion and Development Authority (BCDA) as a relocation site for the population affected by the disposition of portions of the Fort Bonifacio military reservation. It is bounded by Hagonoy Creek in the south and Colonel Ballecer Street in the west. The 82,000-square meter property is cut into 780 parcels intended to shelter an estimated population of 5,460. Floral population within Palacol Lot D constitutes ornamental plants and a few trees. Faunal population is limited to household pets and stray animals. The area is characterized by a relatively even distribution of precipitation during the year. Like in most parts of Metro Manila, the area has two distinct seasons: the dry season during the months of November to May and the wet season during the months of June to October. Existing Sewerage System The sewerage system of Palacol Lot D is made up of polyvinyl chloride (PVC) sewer pipes with diameters ranging from 150-200 millimeters as indicated in the plans. The sewer lines collect wastewater from the individual septic tanks of the 780 households having an equivalent population of 5,460. From the septic tanks, settled wastewater flows to a chlorine contact chamber which is currently not in 7  use. Untreated wastewater then flows to the Hagonoy Creek which finds its way to the Laguna Lake. The current BOD5 of the Laguna Lake ranges from 2-5 mg/L which falls within the BOD5 for Class C waters. DENR Administrative Order 34 (DAO 34) describes Class C water as that suitable for the following: 1. Fishery Water for the propagation and growth of fish and other aquatic resources; 2. Recreational Water Class 11 (Boating, etc.); 3. Industrial Water Supply Class I (For manufacturing processes after treatment). II. ENVIRONMENTAL IMPACTS AND MITIGATING MEASURES Potential Environmental Mitigating Measures Impact CONSTRUCTION PHASE 1. Poor quality of * Manila Water Company will monitor the supply and installation construction contract to assure quality of equipment and construction. Site Managers and Engineers with experience in construction management shall approve all materials and equipment to be used and installed at the site. * The contractor will be required to post a performance bond for the Design and Construction Contract of the sewerage system. 2. Air pollution . Efficient construction planning and work scheduling (suspended particulates, * Formulation of appropriate work plans, work scheduling, work odor and fumes, vehicle specifications and work methodologies emissions eg. CO2, CO . . Provision of properly maintained storage area for keeping NOx) stocks of construction materials and equipment . Prompt and fast removal of excavated materials or dredges spoils from construction site . Sprinkling of water on dust-generating mounds of resulting from earthmoving activities and civil works. * Control of motor vehicle emissions . Dust accumulation will also be prevented through proper washing of the vehicles prior to its departure from the site . Development and enforcement of strict health and safety pollution control regulations specific for the project site - Good housekeeping of workplace and construction affected areas - Use of Protective Gear by all workers 8  3. Water pollution due to . Provide temporary drain systems and storage facilities for wastewater, oil excavation soils, fuel and oils needed for equipment leakage/spills . Cautious and sensible planning for construction and post- construction phases of the project . Provision of a routine chemical and oil spill clean-up plan . Formulation of a monitoring program 4. Noise pollution from . Establish temporary sound barriers around the work site operation of construction . Proper scheduling and phasing of high-noise activities equipment . Use of appropriate mufflers and sound proofing for construction machinery, equipment and engines . Use of Personnel Protective Equipment by all workers 5. Temporary disruption of . Public information campaign posting schedule of construction traffic flow within the . Provision of a liaison officer from the residents of the compound compound to assist the information dissemination regarding inevitable changes in schedule of operations . Provision of temporary alternative routes, including visible traffic warning signals . To the extent possible, sewer lines and manholes will be constructed in common areas not used for pedestrian or vehicular traffic . Scheduling of delivery materials and removal of excavated material during non-rush hour periods. OPERATIONAL PHASE 1.Environmental hazards. . Carefully designed post-construction maintenance, due to accidents, man- contingency and monitoring programs made and natural disasters . Well designed plan for detection of accident or natural events eg. accidental spills, fire, including precautionary and remedial measures to be seismic activity, observed earthquakes, heavy . Provision of preventive and remedial procedural manuals at rain/flooding and design workplace failure . Adequate plans for environmental rehabilitation and restoration of site and removal of temporary structures and facilities installed during construction phase 2. Water Pollution (effluent . Wastewater discharged by the STP shall conform with the discharge) Effluent Standards set forth in DENR Administrative Order 34 and 35 for Class C waters . Regular monitoring of wastewater effluent by the Manila Water Company Central Laboratory . Regular check on sewer lines to prevent discharge/seepage of untreated wastewater to the environment . Quality of civil work on the STP facility shall be enforced during construction to avoid seepage 3. Noise Pollution (STP a Use of appropriate mounting for machinery to minimize equipment, lift station) vibration . All mechanical/electrical equipment shall be installed inside enclosures . If appropriate, motors shall be provided with soundproofing devices . Maintenance of greenbelt zones and vegetation with appropriate tree species 9  4. Solid Waste . Solid waste generated within the STP facility will be minimal (generated within the facility but provision will be made for garbage collection and by the facility) . Disposal of sludge generated will be in accordance with established procedures of relevant authorities (disposal of sludge for use as soil conditioner) 5. Odors (organic and sulfur . Maintenance of greenbelt zones and vegetation with compounds coming from appropriate tree species raw wastewater and during . Provision of landscape which will improve the aesthetic of the desludging of septic tanks) area by planting green strips using appropriate plant or tree species * Provision of odor control mechanisms (deodorizer/adsorbent/masking agent) to prevent malodorous emissions) 6, Maintenance and . Regular asset condition monitoring by Manila Water Company Operation of the System personnel * Poor maintenance of . Regular maintenance works for STP equipment (pumps and mechanical equipment motors), sewer nehvork and septic tanks (pumps and motors) . Adequate training of STP operators * Connections . A liaison officer from the Community will assist the STP operator in assuring the facility's efficiency in operation * Provision of adequate maintenance equipment and spares for the sewerage system facility 111. ENVIRONMENTAL MONITORING PLAN Environmental monitoring will be the responsibility of Manila Water Company. - B 0 T: 1 .& Construction Phase Compliance with Manila . At STP site and its * On-the-spot daily Water Company health and perimeter inspection and safety policies (dust . Pipe laying area monitoring will be emissions, good * Equipment and implemented by the housekeeping, noise, odors) materials storage area Health and Safety Dept. of Manila Water Company using the STARRT Card (Annex 1) Traffic . Ingress and egress to * Daily the construction site 10  Operational Phase Effluent Water Quality . Influent . Annex 2 describes in for parameters like pH, 5-day * Samples from detail the schedule of BOD, COD, Total coliform, Treatment stages wastewater quality suspended solids, and oil and . Effluent monitoring. grease. O STP site and Odor prmtr*Daily * tSpesimter Sludge . AtSTP site Weekly accumulation/Clogging * Sewer network . Communal septic tanks 1.0 PROJECT DESCRIPTION 1.1 Basic Project Information Name of Project : PALACOL LOT D COMMUNITY SANITATION PROJECT MANILA SECOND SEWERAGE PROJECT Address PALACOL LOT D, Barangay Signal Village, Taguig, Metro Manila Contact Persons : Leonor C. Cleofas Manager, Engineering and Project Management Office Metropolitan Waterworks and Sewerage System Ground Floor, Engineering Building, MWSS Complex, Katipunan Road, Balara, Quezon City 1105 Tel No. (632) 920-5413; (632) 920-5521 to 40 locals 3570/3569; Telefax: (632) 922-2568 Ma. Fiorella De Los Reyes-Fabella Wastewater Project Development Manager Manila Water Company, Inc. 489 Katipunan Road, 1105 Balara, Quezon City, Philippines Tel No. (632)981-8147; (632)926-7999 loc2032 Fax (632) 981-8106  1.2 PROJECT LOCATION The proposed project for Palacol Lot D is a sub-project of the Community Sanitation Project, which is a component of the World Bank-assisted MSSP. The service area is the entire compound of Palacol Lot D. The project site is along Pio Felipe Street in Taguig which is accessible by way of M. Almeda St. in Pateros. Figure 1 presents the vicinity map of the project. 1.3 PROJECT RATIONALE In Metro Manila, untreated/partially treated domestic wastewater is the major source of pollution of inland waters. Most residential houses in Metro Manila treat their wastewater by means of septic tanks, which do not provide adequate treatment to satisfy the DENR requirements for wastewater effluent standards. Moreover, majority of septic tanks in Metro Manila is not properly maintained. This situation has led to the deterioration of the Pasig River and other inland waters. The DENR has estimated that around 60% of the pollution load to Pasig River, which empties to Manila Bay and Laguna Lake, come from domestic discharges. In the case of Laguna Lake, 65% of the total pollution load is attributed to domestic waste. There is therefore an urgent need to establish collection and treatment methods that will help reduce the pollution load to inland waters. The provision of an efficient and cost-effective sewage collection, treatment and disposal is the primary objective of the Community Sanitation Project under the MSSP. This project specifically aims to address the problems of inadequate wastewater treatment and disposal in Palacol Lot D. Inadequate treatment of wastewater in septic tanks is indicated by the typical analysis of the effluent quality of septic tanks in other project sites (see Table 1 below). The project will help reduce public health risks and environmental pollution from untreated/partially treated domestic wastewater by providing a sustainable sanitation and sewerage facility. It will also serve as a good illustration of proper sanitation especially to the neighboring communities near Laguna Lake. 12  Figure 1. Location Map P A L A C O~~~~PAACL LOT D z LIZ Project Area Water Bodies 13  Table 1 Typical Analysis of Septic Tank Effluent Quality PH 6.5-9 7.3(R27.90C Suspended solids, mg/L 70 90-120 Dissolved Oxygen, mg/L 0.00 Biochemical Oxygen Demand 50 150-250 (BOD5), mg/L Chemical Oxygen Demand, mg/L 100 200-300 Total Coliform Count, MPN/100 ml 10,000 10-107- 0 6 7 Fecal Coliform Count, MPN/100 ml - .10W-10 1.4 DESCRIPTION OF PROJECT PHASES 1.4.1 Pre-Operational / Construction Phases 1.4.1.1 Construction Plan The project is scheduled for bidding in December 2001. Construction is expected to commence in March 2002 and project completion is targeted in September 2002 (210 calendar days). Figure 2 shows the implementation schedule for the project. Manila Water Company will undertake the project implementation. 14  Figure 2 Proposed Implementation Schedule for the PALACOL LOT D Community Sanitation Project Week No. 1 2 3 4 1 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 nStakiTraten OrderEquipment Excavatsing f. MInstl Treactort l<_| Auccept9ance & j{____112lt Tn urinove  1.4.1.2 Total Surface Development Block The service area is approximately 8.2 hectares and is estimated to have a projected population of 5,460. The project will serve all residential and commercial establishments within Palacol Lot D. Any increase in population is not considered because there are no further planned development within the compound that would significantly affect the quality and/or quantity of wastewater discharges. 1.4.1.3 Estimate of Total Land Area to be Opened for Civil Works Civil Works will include installation of sewer pipe to collect the flow from the chlorine contact chamber to the STP, construction of the STP, and the laying of STP discharge pipe. The STP may be located underground in a 200 square- meter lot. Sewer lines totaling 20 meters will be opened for civil works. Figure 3 shows the STP site layout for the project. 1.4.1.4 Major Openings and Construction Activities The complete sewerage system will include the following components: * Sewer lines (diameter=200 mm) with a total estimated length of 15 meters to connect the chlorine contact chamber to the STP * STP with a design capacity of 874 m3/day and land requirement of 200 m2 * STP discharge pipe (diameter=200 mm) with a total estimated length of 5 meters to existing storm drainage Civil works to be implemented are as follows: For STP - mechanical installation * Site clearing - electrical installation * Earthworks * Site restoration - excavation and handling * Clearing/ miscellaneous activities - dewatering For Pipelaving - backfill and compaction o Pavement cutting - lean concrete/ gravel bedding o Shoring and removal * Concrete Works * Excavation and handling - shoring and soil protection o Dewatering - formworks + Pipelaying - concreting o Backfill and compaction * Electro-mechanical * Testing pavement restoration * internal and external pipeworks o Clearing / miscellaneous activities  Figure 3 Proposed STP Site Layout Manila Water K! / ~~~~~~~~house ,mwss o EL20.05 //S <~ WATE EXISTING CHLORINE EEXiST 250mmn TO EXISTINGCHLORINES EFFLUENT LINE CONTACT CH BEL0 BE A DCYCLONE WIRE FENCE 17  1.4.1.5 Types of Equipment to be Used The civil works contractor will provide equipment which include, but is not limited to, the following: * backhoe/loader * dewatering equipment * concrete mixer/concrete pump * welding machine * compactor * jackhammer and air compressor o generator * dump trucks 1.4.1.6 Source of Construction Materials and Facilities The following alternative type of pipe materials will be permitted for sewer mains: * UPVC Pipe * Polyethylene * Fiberglass Pipe * Ductile Iron Pipe * Cast Iron Soil Pipe The contractor can choose from the above pipe materials. 1.4.1.7 Support Services and Facilities Requirements and Availability Support services and facilities will be tapped from the available utilities on site. Arrangements with locators in Palacol Lot D and/or any other party will be made by the contractor. 1.4.1.8 Estimate Total Cut Soil Volume(for pipelaying) Table 2 presents the total system length, average excavation depth of the sewer pipes and area of the project. 18  Table 2 Estimates of Soil Excavation Volumes Estimated Average Excavation Average Dimensions Depth (m) Excavation (sq.m) Volume (cu. m.) STP site 200.00 6.0 1,200.00 Sewer line 200 10.00 1.5 15.00 mm0 TOTAL 1,215.00 *Estimated dimension of pipe (sq.m.)= [(pipe diameter +0.3) x total length of pipe required] 1.4.1.9 Total Manpower Requirement The project will be bid out based on World Bank procedures. The winning bidder will provide contractual work for a period of around 210 calendar days. The contractor will provide skilled and unskilled workers to carry out the scope of works as detailed in the bid documents. The scope of works includes: * site clearing * installation works for the sewer.network * detailed engineering design and construction/installation works for the STP and its appurtenances * landscaping of the STP site and the vicinity * abandonment activities (road restoration, etc.) * STP start-up operations 1.4.2 Operational Phase 1.4.2.1 Project Operation Schedule and Duration Completion of construction is expected by September 2002. Start-up operations will begin immediately after project completion. 1.4.2.2 Process Technology and Activities The project will be bid on the basis of performance specifications for the STP Treatment Process: * Wastewater flows were computed on the basis of a per capita water demand of 200 liters per day and a 70% wastewater discharge. Storm infiltration was estimated at 10% of the total flows. A peak factor of 1.5 was added in the computation of design flows to determine pipes sizes and capacity of STP. 19  * The influent flow characteristics were based on random laboratory analyses of septic tank effluent in other project sites. The influent quality assumptions are shown in Table 3 below: Table 3 Influent Flow Characteristics 0 100 1 200 350 50 6-9 TSS = Total Suspended Solids BOD5 = 5-day biochemical oxygen demand at 200C COD = chemical oxygen demand * Wastewater discharged by the STP shall conform with the Effluent Standards set forth in DENR Administrative Order 34 and 35 for Class C waters as shown in Table 4 below: * Wastewater treatment will reduce the BOD5 from 200 mg/L to 50 mg/L, at the minimum. This illustrates an STP treatment efficiency of at least 75%. Table 4 DENR Effluent Parameters for Class C Waters j - M .F - S -s M :S. ... ;I Color PCU 150 pH 6-9 COD mg/L 100 Settleable solids mg/L 0.5 5-day 200C BOD mg/L 50 Total Suspended Solids mg/L 70 Total Dissolved Solids mg/L 7 Oil and Grease mg/L 5 Phenolic Substances mg/L 0.10 Total Coliforms MPN/100 ml 10,000 Process Scheme of STP The STP to be constructed in Palacol Lot D may be below ground. If contract award goes to an underground STP proposal, the only aboveground structures will be the control room/panel. The STP treatment process will provide secondary treatment to septic tank effluent. It is expected that bidders will propose different process technologies based on the performance specifications in the bid documents. Some factors which will be considered in selecting the STP treatment process are: 20  * Suitability in project site . Performance/Treatment efficiency * Capital and Replacement costs * Operations and Maintenance Costs * Complexity of operations . Flexibility of treatment process A general scheme for the treatment process is illustrated in Figure 4. 1.4.2.3 Waste Production Scheme Up to 2005, sludge produced in the treatment process will be transported to a centralized Septage Sea Disposal Station located in J.P. Rizal St, Brgy. West Rembo, Makati City. Mobile vacuum tankers will collect the sludge produced in the STP. A long-term disposal scheme for biosolids from the STP will be as soil conditioner for sugarcane and corn in Pampanga. Experiments done in coordination with the Sugar Regulatory Administration on the use of sludge in enhancing the soil quality of lahar-covered areas and the growth of crops such as sugarcane, com and bittergourd resulted in the issuance of a temporary license issued by the Fertilizer and Pesticide Authority. The license allows the use of sludge in growing similar crops. Sludge generated from the STP can also be treated in the 600 cum/day septage treatment facility which is expected to be operational by 2004. This facility is part of the Sanitation Component of the Pasig River Rehabilitation Project. The facility will be operated by Manila Water Company. 1.4.2.4 Manpower Requirement Manila Water Company will assign an LLDA and DENR-accredited Pollution Control Officer (PCO) who will be responsible for the compliance of the STP with government regulations. The PCO will have trained operators/crews who will monitor and manage the operation of the sewer network. Since the STP operations will be operated largely by automation, regular maintenance works will include declogging of sewer lines and removal of sludge from the STP site and the communal septic tanks. The STP operator will visit the project site daily. Monitoring of the effluent quality will be the joint responsibility of the PCO and the Central Laboratory of Manila Water Company. A liaison officer from the community will coordinate with Manila Water Company personnel on the proper operations of the STP and the sewer network. A 24-hour Customer Service Hotline (1627) is available to accept complaints and other emergency reports. Manila Water Company has sewer network repair crews who work in regular round-the-clock 8-hour shifts and who are readily available for any emergency work. 21  Figure 4 General Treatment Process Scheme Raw Sew'ag J .\/ Lift Surge 20 Treatment Disinfection Pump Tank System (Chlorination) Biological (SBR/IDEA Activated Sludge) Waste Sludge Sludge Digestion Re-use sludge as soil conditioner 22  1.4.3 Abandonment Phase Upon completion of the project scope, the contractor will remove all temporary structures and facilities installed during the construction phase. All pavements will be restored. The cost of abandonment will be incorporated in the overall cost of the project. Manila Water Company will issue a certificate of final acceptance only upon completion of all abandonment works by the contractor and upon turnover of the STP operations. 2.0 BASELINE ENVIRONMENTAL CONDITIONS 2.1 STUDY METHODOLOGY This Initial Environmental Examination (IEE) was prepared in compliance with the World Bank's Operational Directive 4.01 on Environmental Assessment. An IEE was previously carried out according to the DENR Administrative Order No. 96- 37, for which an Environmental Compliance Certificate (ECC) dated Dec. 11, 2000 has been issued by the DENR-Regional Office (Annex 3). 2.2 LAND 2.2.1 Land Resource Utilization Palacol Lot D has an estimated land area of 8.2 hectares. Approximately 30% of the total area is devoted to residential use, while 70% accounts for parking spaces, driveways, other common facilities and open spaces. 2.2.2 Physiography and Geology Palacol Lot D lies on a relatively flat plain. Soil type in the area belongs to the QA1-Quaternary Alluvium class. Quaternary Alluvium is characterized by detrital deposits; mostly silt, sand and gravel. 2.2.3 Vegetation and Wildlife The proposed site for the STP is in a vacant lot in Block 54. Figure 5 shows photographs of the proposed site. The vegetative cover of the site is predominantly wild grass interspersed with a small number of wild, adolescent vegetation. The plant species that can be found in the site and which will be uprooted during construction are: Aratiles (Muntingia calabura); Cassava (Manihot esculenta); Cashew; Common grass (Phragmites spp); Guava (Psidium guajava); Makahiya (Mimosa pudica); Papaya (Carica papaya); Sweet potato; Tamarind (Tamarindus indicus) Faunal population is limited to household pets and stray animals. 23  Figure 5. Proposed STP Site v--a " Vcnarea in Block 54a 24  2.2.4 Land Acquisition Assessment Manila Water will be allowed to use a parcel of land for the STP by way of a grant of perpetual easement from the owner/developer of the community, which in this project is the Bases Conversion Development Authority (BCDA). The STP site is free from informal settlers. 2.3 WATER 2.3.1 Inventory of Water Bodies Wastewater flows from the individual septic tanks flow to the Hagonoy Creek and ultimately to the Laguna Lake. The current BOD5 of the Laguna Lake is 2-5 mg/L which falls within the BOD5 for Class C waters. DENR Administrative Order 34 (DAO 34) describes Class C water as that suitable for the following: 1. Fishery Water for the propagation and growth of fish and other aquatic resources; 2. Recreational Water Class II (Boating, etc.); and 3. Industrial Water Supply Class I (For manufacturing processes after treatment) 2.3.2 Water Quality (Surface/Ground) Surface Water Quality. Pollution loading to the Laguna Lake will be reduced since septic tanks and raw wastewater from the project area will no longer be discharged directly to the Lake. Effluent from the plant will comply with DENR Effluent Quality standards sufficient for Class C waters. At present, the Laguna Lake is used for the propagation and growth of fishes as well as recreational and industrial uses. Sixty five percent (65%) of the pollution loading to the Lake comes from domestic waste. Without any sewerage or sanitation interventions, the pollution load entering the Lake is expected to increase dramatically unless necessary steps to reduce pollution loading form domestic wastewater is taken. Ground Water Quality. Since septic tank effluent will undergo further treatment in the plant, the possibility of contaminating the aquifers due to leachate from septic tank discharge or from raw wastewater will be eliminated. Seepage from plant operations will be non-existent. 25  2.4 AIR Taguig experiences only two types of weather conditions, rainy season and the dry season. Rainy season occurs between the months of July and October, while the dry season occurs between November and June. Mean annual temperature is 27.40C and average annual humidity is 77% for Metro Manila. Air quality within Palacol Lot D is moderately unpolluted. However, outside the premise is a national road where public and private vehicles exhaust vehicle fumes contributing to the air pollution in the vicinity. 2.5 PEOPLE 2.5.1 Population Assuming 7 persons per unit, the projected population in Palacol Lot D is 5,460. Social status of the families range from Class B to Class D based on the classification of the National Statistics Office (NSO). 2.5.2 Project Affected Persons During construction, the project will cause noise and traffic nuisance to the Palacol Lot D community, its neighboring communities and pedestrians. Once operational, the project will directly affect the residents of the entire Palacol Lot D. The sanitation of the community will be improved when the new sewer system is operational. Manila Water will assign skilled personnel to operate and maintain the system up to approved standards. 3.0 ALTERNATIVES Palacol Lot D is considered a priority area for the improvement of sanitation conditions based on the following factors: * It has a relatively high population density. + The existing sanitation facilities are inadequate to comply with the DENR effluent standards. * The communal sanitation and drainage systems in the compound are not maintained. The site identified for the STP is a vacant lot in Block 54. The site will not require relocation of inhabitants during construction. 26  4.0 IMPACT ASSESSMENT 4.1 IMPACT IDENTIFICATION Table 5 Sources and List of Potential Environmental Impacts r __ 0. 0. . 0 - . 0. CONSTRUCTION PHASE Air Pollution The impact on the air quality will only occur during the construction phase, but could be 1. Dust emission will occur due to civil works controlled through proper measures. Among such as excavation, disposal of excess the potential air impacts are: soil, etc. . Ground level concentration of suspended 2. Emission of dust and other air pollutants solids will increase by vehicles. * Air pollutants such as C02, CO, and NO, will occur from vehicle emissions. Water Pollution . Improper disposal of the wastewater produced could lead to contamination of 1. Domestic waste made by the construction ground water. workers and staff. . Uncontrolled wastewater discharge, 2. Wastewater will be produced due to the construction debris and oil leakage / spill will washing of vehicles. increase the sedimentation/contribute to the 3. Spillage of oil might occur through pollution of the nearest body of water improper handling. Noise Pollution . Noise level will increase due to the usage of noise generating equipment. 1. Noise pollution from the operation of construction equipment and vehicles. OPERATIONAL PHASE Water Pollution . The project will reduce the wastewater load into the Laguna Lake and will constitute a 1. Improper operation and maintenance of positive impact. However, improper the STP will result to water pollution. operations/maintenance of the STP will result to the discharge of untreated or partially treated effluent. Odor Pollution . The whole Palacol Lot D, especially the buildings near the STP, will experience 1. Unpleasant odor will result from the unpleasant odor during periods of odor anaerobic conditions and improper emission. operation and maintenance of the STP. Noise Pollution . Impact will be insignificant and can easily be controlled through proper preventive 1. Noise generating engines and equipment measures. that are necessary for the operation of STP will be used. Added noise will be created during its operation. 27  Socio-Economic * The STP will result to a positive impact since the domestic wastewater will be 1. The project will result to proper treatment treated and will help decrease the pollution of wastewater. load into Pasig River. Also, the treated 2. Value of land will increase. water could be re-used. Residual and Unavoidable Impacts * Proper precautionary and preventive measures to avoid these kinds of impacts. 1. Accidents and man-made disasters might occur due to design failure and improper construction practices. 2. Environmental hazards might occur due to natural disasters like earthquakes, typhoon, etc. 4.1.1 Impacts During Construction Phase A. Air Quality During the implementation of the project, an increase in emission of dust and suspended particulates will occur in the vicinity of the STP site and excavations for the sewer pipes. This can be attributed to civil works such as excavation, disposal of excess soil and other related construction activities. Another cause will be emission of fumes and other air pollutants of the vehicles to be used. B. Water Quality Excavation activities in the project site could loosen soils and transport of these materials to the Laguna Lake will result in siltation or increase in turbidity. Inappropriate disposal of human waste by construction workers, excessive use of water for washing of equipment and spillage of oil might also occur. C. Noise Noise will be generated during the construction of the project due to the operation of equipment and construction activities. Considering that the proposed site for the project is near the residential buildings, proper mitigating measures will be done to ensure that the equipment and activities will cause little or no disturbance to the residents. Heavy equipment will be monitored to operate only in short periods of time to avoid sustained high level of noise. The operator of heavy equipment will be required to pause work for 10-15 minutes after every two (2) hours of operation. The use of heavy equipment will be strictly prohibited from 6:00 P.M. until 8:00 A.M. on weekdays. Residents will be given prior notice at least one (1) day before use of any heavy equipment on Saturdays. Use of heavy equipment will be prohibited during Sundays except for special or emergency activities that need immediate action. 28  Table 6 shows the typical noise emissions of common construction equipment used at various distances from source. Table 6 Typical Noise Emissions of Construction Equipment at Various Distances from Source in dB(A) Air Compressor 75-87 69-81 63-75 Backhoe 71-92 65-87 59-81 Compactor 72 66 60 Concrete Mixer 75-88 69-82 63-76 Pumps 70-90 64-84 56-78 Tractors, 78-95 72-89 66-83 Bulldozers __l Trucks 83-93 77-87 71-81 Jack Hammer 81-97 75-91 69-85 D. Ecological Effects Since there are no rare, endemic species of flora and fauna in the project area, project implementation has minimal impact on the overall terrestrial ecology of Palacol Lot D. Some plants will be unavoidably cleared during civil works. 4.1.2 Impacts During Operation Phase A. Air Quality There will be minimal effect on the air quality during the operational phase of the STP. Aside from the occasional odor nuisance, there will be no adverse effect on the air quality. The performance specifications for the STP treatment process specifically state that the facility should have odor control mechanisms (eg., deodorizer, masking agent, adsorbent, etc.). Manila Water Company will not accept the turnover of the STP by the contractor if the facility emits unpleasant odors. Permanent solution(s) to address any odor nuisance will be the responsibility of the contractor. B. Water Quality Without wastewater treatment, Palacol Lot D accounts for an estimated 175 kg BOD5/day loading to the Laguna Lake. The implementation of the project will contribute to the improvement of the quality of water in Laguna Lake by reducing discharge of untreated/partially treated wastewater. From a pollution loading of 175 kg BOD5/day, loading will be reduced to 26-44 kg BOD5/day, or a 75-85% BOD5 reduction, when the STP becomes operational. 29  C. Socio-Economic A flat sewer charge equivalent to 50% of the water charge will be included in the water bill once the STP is commissioned. This fee will help cover the costs of the operations and maintenance of the STP and the sewer network. This arrangement will be clearly explained to the community during the consultation process and the residents' agreement to the project will include their acceptance of the additional fees. The consultation to be done with the community is explained in Chapter 6.0. The general sanitation conditions in the project area will significantly improve. The project will reduce, if not eliminate the threat of water borne diseases such as diarrhea and typhoid fever, which are more costly to manage. D. Sludge Disposal and Management The existing septic tanks in the area produce an estimated 36.85 kg of sludge per year. The table below illustrates the sludge production averages for various wastewater treatment processes. Also indicated is the estimated sludge production of the STP considering each type of treatment. Table 7 Sludge Production of Various Wastewater Treatment Processes Treatment Process Typical Dry Solids Estimated STP Sludge Production (kglm3) Production (kglday) Activated sludge 85 74,290 Trickling filtration 70 61,180 Extended aeration 100* 87,400 Aerated lagoon 100* 87,400 *assumes no primary treatment The bidders for the project may propose any of the above wastewater treatment process or their modifications. Cost and operational efficiency are among the considerations for awarding the bid. In the interim (i.e. up to 2005), sludge produced in the treatment process and collected from the communal septic tanks will be transported to a Septage Sea Disposal Station located in J.P. Rizal St., Brgy, West Rembo, Makati City. Vacuum tankers will collect the sludge produced in the STP and the septage from septic tanks. A long-term alternative is the disposal of sludge and septage to the lahar areas in Pamapanga. The sludge can be used as soil conditioner for sugarcane and corn. Experiments done in coordination with the Sugar Regulatory Administration on the use of sludge in enhancing the soil quality of lahar-covered areas and the growth of crops such as sugarcane, corn and bittergourd resulted in the issuance 30  of a temporary license issued by the Fertilizer and Pesticide Authority. The license allows the use of sludge in growing similar crops. Starting 2004, a septage treatment facility will also be available to treat sludge and septage from the STP. This septage treatment is part of the Sanitation Component of the Pasig River Rehabilitation Project. Manila Water Company will operate the septage treatment facility. Stabilized sludge may also be used as filling material 4.2 IMPACT PREDICTION AND EVALUATION Table 8 below presents a summary of the assessment of the impacts of the project. Table 8 SUMMARY OF ASSESSMENT OF ENVIRONMENTAL ISSUES/IMPACTS Environmental Impact Assessment Issues/lmpacts Classification Probability Reversibility Time 11rFE -Scale 1. Construction Phase Air/Dust Pollution * .t< Noise - 0+ < Traffic - + < 4. Soil Erosion - 40 < Water Pollution - 0 < Increased + + < Employment 2. Operational Phase Water Pollution - > Contamination of drinking i 4' > + water supply Odor Pollution o +<t Noise El + < + Accidents/hazards o + < + Health benefits + >4+ Property Value and Commercial + > + > Attractiveness Environmental sanitation + * 4> 4 enhancement + Positive 0 Unlikely to occur + Reversible < Short term 4' Insignificant - * likely to occur + Irreversible > Long term T Moderate Negative 4 Severe 31  The implementation of the project is projected to produce minimal adverse effect environmental impacts. Moreover, the long-term benefits from the project such as improved sanitation conditions within the compound, lesser risk of waterborne diseases, and reduction in pollution will more than compensate for the negative effects that this project will cause during construction and operation. Mitigating measures will be implemented to minimize, if not eliminate any adverse impact that the project may cause. Measures to enhance the existing environmental conditions in the project site shall be implemented, as needed. 4.3 UNAVOIDABLE AND RESIDUAL IMPACTS Unavoidable and residual impacts are those which occur as a result of natural calamities such as floods caused by typhoons or heavy rains, earthquakes and the like. Appropriate measures will be done to anticipate these impacts and to implement contingency action plans. 5.0 ENVIRONMENTAL MANAGEMENT PLAN 5.1 IMPACTS MITIGATION / ENHANCEMENT PLAN Table 9 below is a matrix on the environmental management plan of the proposed project. Table 9 ENVIRONMENTAL MANAGEMENT PLAN CONSTRUCTION PHASE l Potential Manner of Environmental Mitigating Measures Implementation Schedule Impact 1. Poor quality of . Manila Water Company will To be included in the Daily construction monitor the supply and contractor's scope of installation contract to work, under the assure quality of equipment supervision of Manila and construction. Site Water Company.* Managers and Engineers with experience in construction management shall approve all materials and equipment to be used and installed at the site. . The contractor will be required to post a performance bond for the Design and Construction Contract of the sewerage system. 32  2. Air pollution . Efficient construction To be included in the Start of (suspended planning and work contractor's scope of construction particulates, odor scheduling work, under the and daily and fumes, vehicle . Formulation of appropriate supervision of Manila emissions eg. C02, work plans, work scheduling, Water Company.* CO NOR) work specifications and \'.'ork methodologies . Provision of properly maintained storage area for keeping stocks of construction materials and equipment * Prompt and fast removal of excavated materials or dredges spoils from construction site * Sprinkling of water on dust- generating mounds of resulting from earthmoving activities and civil works. * Control of motor vehicle emissions . Dust accumulation will also be prevented through proper washing of the vehicles prior to its departure from the site . Development and enforcement of strict health and safety pollution control regulations specific for the project site - Good housekeeping of workplace and construction affected areas - Use of Protective Gear by all workers 3. Water pollution a Provide temporary drain To be included in the During due to wastewater, systems and storage contractor's scope of construction oil leakage/spills, facilities for excavation soils, work, under the toxic and hazardous fuel and oils needed for supervision of Manila substances equipment Water Company.* . Cautious and sensible planning for construction and post-construction phases of the project . Provision of a routine chemical and oil spill clean- up plan . Formulation of a monitoring program 4. Noise pollution . Establish temporary sound To be included in the Daily from operation of barriers around the work site contractor's scope of 33  construction * Proper scheduling and work, under the equipment phasing of high-noise supervision of Manila activities Water Company.* * Use of appropriate mufflers and sound proofing for construction machinery, equipment and engines * Use of Personnel Protective Equipment by all workers 5. Temporary * Public information campaign To be included in the Daily disruption of traffic posting schedule of contractor's scope of flow within the construction work, under the compound * Provision of a liaison officer supervision.of Manila from the residents of the Water Company.* compound to assist the information dissemination regarding inevitable changes in schedule of operations * Provision of temporary alternative routes, including visible traffic warning signals * To the extent possible, sewer lines, manholes and lift station will be constructed in common areas not used for pedestrian or vehicular traffic * Scheduling of delivery materials and removal of excavated material during non-rush hour periods. 6. Accumulation of * Hauling and proper disposal To be included in the Daily solid waste in of waste construction contractor's scope of construction site materials by contractor, work, under the supervised by Manila Water supervision of Manila Company Water Company.* * Provision of temporary toilet facilities for workers *Manila Water Company's contractor shall comply with all the conditions stipulated in the scope of work. Any violation by the contractor will be penalized by a performance security incorporated in the bid. The performance security will be in the form of an unconditional bank guarantee in the amount of 10% of the contract price. 34  OPERATIONAL PHASE Potential M Mannie? r;:of Environmental Mitigating Measures Implementation Schedule Impact -- 1.Environmental . Carefully designed post- Manila Water Observance hazards due to construction maintenance, Company of guidelines accidents, man- contingency and monitoring will be done made natural programs daily. disasters eg. * Well designed plan for Accidental spills, detection of accident or fire, seismic natural events including activity, precautionary and remedial earthquakes, heavy measures to be observed rain/flooding and * Provision of preventive and design failure remedial procedural manuals at workplace * Adequate plans for environmental rehabilitation and restoration of site and removal of temporary structures and facilities installed during construction phase 2. Water Pollution * Wastewater discharged by Manila Water Refer to the STP shall conform with Company Annex 2 the Effluent Standards set forth in DENR Administrative Order 34 and 35 for Class C waters. Annex 2 describes in detail the schedule of wastewater quality monitoring. - * Regular monitoring of wastewater effluent by the Manila Water Company Central Laboratory * Regular check on sewer lines to prevent discharge/seepage of untreated wastewater to the environment . Quality of civil work on the STP facility shall be enforced during construction to avoid seepage 35  3. Noise Pollution . Use of appropriate mounting Manila Water Observance for machinery to minimize Company shall be done vibration daily. . All mechanical/electrical equipment shall be installed inside enclosures . If appropriate, motors shall be provided with soundproofing devices . Maintenance of greenbelt zones and vegetation with appropriate tree species 4. Solid Waste . Solid waste generated within Manila Water Weekly (generated within the STP facility will be Company the facility and by minimal but provision will be the facility) made for garbage collection . Disposal of sludge generated will be in accordance with established procedures of relevant authorities (disposal of sludge for use as soil conditioner) 5. Odors (organic . Maintenance of greenbelt Manila Water This shall be and sulfur zones and vegetation with Company inspected compounds coming appropriate tree species daily. from raw . Provision of landscape which wastewater and will improve the aesthetic of during desludging the area by planting green of septage) strips using appropriate plant or tree species . Provision of odor control mechanisms (deodorizer/adsorbent/maskin g agent) to prevent malodorous emissions) 6, Maintenance and * Regular asset condition Manila Water This shall be Operation of the monitoring by Manila Water Company done daily. System Company personnel . Poor . Regular maintenance works maintenance of for STP equipment (pumps mechanical and motors), sewer network equipment and septic tanks (pumps and a Adequate training of STP motors) operators . A liaison officer from the Community will assist the STP operator in assuring the facility's efficiency in operation . Provision of adequate maintenance equipment and spares for the sewerage system facility 36  5.2 ENVIRONMENTAL MONITORING ACTION PLAN Tables 10 and 11 below present the action plan for environmental monitoring for the proposed project. Manila Water Company will be responsible for the monitoring of-the STP, the sewer network, and communal septic tanks. Table 10 Environmental Monitoring Action Plan i *"m 2"] _' :" -A* LM t5 Construction Phase Compliance with Manila * At STP site and its * On-the-spot daily Water Company health and perimeter inspection and safety policies (dust . Pipe laying area monitoring will be emissions, good * Equipment and implemented by the housekeeping, noise, odors) materials storage area Health and Safety Dept. of Manila Water Company using the STARRT Card (Annex 1) Traffic . Ingress and egress to * Daily the construction site Operational Phase Effluent Water Quality * Influent . Annex 2 describes in for parameters like pH, 5-day . Samples from detail the schedule of BOD, COD, Total coliform, Treatment stages wastewater quality suspended solids, and oil and . Effluent monitoring. grease. Daily Odor . Weekly . STP site and Sludge perimeter accumulation/Clogging . At STP site * Sewer network . Communal septic tanks 37  Table 1 1 Institutional Monitoring Item Reporting Scheme Reporter Recipient Frequency: Pre-Construction Phase Confined Space Contractor Manila Water every entry to a Permit confined space Welding Contractor Manila Water once Accreditation Construction Phase STARRT Card Contractor r Manila Water daily Progress Report Manila Water iMWSS quarterly MWSS World Bank Operation Phase PCO Report (See Manila Water DENR/LLDA quarterly Annex 4 for the PCO MWSS PCO Report Format) The procedures to be used during the sampling and analysis will be based on the standard methods prescribed in DENR Administrative Order No. 34 and 35. Annex 5 presents a sample monitoring sheet of effluent quality used by Manila Water Company. 6.0 CONSULTATION PROCESS The development of the project is ongoing. Consultations with the BCDA and the community associations are being conducted. Annex 6 presents the endorsement of the Barangay Captain for the project. A Memorandum of Agreement (MOA) will be executed among Manila Water Company, the Bases Conversion Development Authority, and the community associations. The MOA will specify the responsibilities of the parties concerned in the project (see Annex 7). 38  ANNEXES  ANNEX 1  ANNEX 1. MANILA WATER COMPANY STARRT CARD FOR MONITORING CONSTRUCTION WORKS SAFETY TASK ANALYSIS RISK REDUCTION TALK (STARRT) CARD NAME OF CONTRACTOR: DATE: _ _ SUPERVISOR/FOREMAN: _ JOB DESCRIPTION: NIGHT E LOCATION: __ DAY m TODAY ACTIVITIES: PRIMARY HAZARDS INVOLVED: SAFETY PRECAUTIONS TAKEN: PUBLIC SAFETY HAZARDS (ENVIRONMENTAL) BARRICADES N/A YES NO NOISE N/A YES NO TRENCH PLATE N/A YES NO HEATSTRESS N/A YES NO SIGNS N/A YES NO GROUND CONTAMINATION N/A YES NO BARRIERS N/A YES NO WORKING AT HEIGHT FLASHERS N/A YES NO FULL BODY HARNESS YES NO GUARDS N/A YES NO SHOCK ABSORBING LANYARD YES NO NOTICES N/A YES NO ACCESS LADDERS YES NO OTHER N/A YES NO TIE OFF POINTS N/A YES NO HAZARDS (BODY) HORIZONTAL SAFETY LINE N/A YES NO FALL POTENTIAL N/A YES NO ENERTIA REAL N/A YES NO PINCH POINTS N/A YES NO SLIP GRIPS N/A YES NO ELECTRICAL SHOCK N/A YES NO SAFETY NETS N/A YES NO SLIP-TRIP N/A YES NO MAN BASKETS N/A YES NO FLYING PARTICLES N/A YES NO SUSPENDED PLATFORM N/A YES NO THERMAL BURNS N/A YES NO DROP AREA PROTECTION N/A YES NO MANUAL LIFTING N/A YES NO BARRICADES N/A YES NO SHARP OBJECT N/A YES NO SCAFFOLD HOUSEKEEPING GREEN TAG UP TO DATE N/A YES NO AREA TIDY YES NO HANDRAILS, LADDERS, BOARDS N/A YES NO FREE OF WASTE YES NO FULL WIDTH PLANKING N/A YES NO PPE ALL PLANKS IN GOOD CONDITION N/A YES NO HARD HAT YES NO CONFINED SPACE SAFETY GLASSES YES NO CONFINED SPACE PERMIT ISSUED YES NO WORK GLOVES YES NO CONFINED SPACE STANDBY PERSON YES NO SAFETY BOOTS YES NO ATMOSPHERE TESTED YES NO CHEMICAL GLOVES N/A YES NO WORKERS TOLD OF HAZARDS YES NO RUBBER BOOTS N/A YES NO ENTRY PERMIT COMPLETED YES NO MONO GOGGLES N/A YES NO WELDING FOOT GUARDS N/A YES NO HOT WORK PERMIT YES NO EXCAVATION FIRE WATCH MAN YES NO EXCAVATION PERMIT YES NO FIRE EXTINGUISHERS YES NO DAILY INSPECTION YES NO FIRE BLANKET YES NO BENCHED/SLOPED/STEPPED YES NO SHIELDS N/A YES NO LADDER PROVIDED YES NO CYLINDERS SECURED... SIGNS & BARRICADES IN PLACE YES NO ... & MOVED FROM SPARK AREA N/A YES NO ELECTRICAL SPARKS CONTAINED N/A YES NO CORDS IN GOOD CONDITION N/A YES NO COMBUSTIBLES CLEARED N/A YES NO PLUGS & RECEPTORS NOT - FACE SHIELD N/A YES NO BROKEN N/A YES NO BURNING GOGGLES N/A YES NO CORRECT VOLTAGE RATING N/A YES NO FRESH AIR N/A YES NO STRUNG ABOVE GROUND N/A YES NO RESPIRATOR N/A YES NO NOT THROUGH WATER N/A YES NO EAR PROTECTION N/A YES NO SAFETY HARNESS N/A YES NO OTHERS: --------  LIFTING EMERGENCY EQUIPMENT RIGGING IN GOOD CONDITION YES NO FIRE EXTINGUISHER N/A YES NO PROPER RIGGING YES NO SAFETY SHOWER N/A YES NO LIFTING ZONE BARRICADED YES NO EYEWASH NiA YES NO CURRENT INSPECTION ON CRANE YES NO REPAIR PROCESS EQUIPMENT OVERHEAD POWER YES NO VALVES LOCKED N/A YES NO LINES CLEARANCE (10'+) YES NO TAGS HUNG N/A YES NO OVERHEAD WORK OR FLOOR OPENING PROPER EQUIPMENT FIXED BARRICADES YES NO MANLIFT N/A YES NO (TAPE) DANGER N/A YES NO FORKLIFT N/A YES NO (TAPE) CAUTION N/A YES NO TRUCKS, TRACTOR ETC. N/A YES NO BARRIERS N/A YES NO HAND TOOLS N/A YES NO SIGNS N/A YES NO HAND POWER TOOLS N/A YES NO TRENCH & HOLE COVER IN . GENERAL PLACE N/A YES NO TRAFFIC WATCH N/A YES NO HANDRAILS/TOEBOARD N/A YES NO PERMIT & STARRT CARD N/A YES NO DISPLAYED REMARKS: SUPERVISOR: SIGNATURE:__ FOREMAN: SIGNATURE: _ _ EMPLOYEE NAME: ID # EMPLOYEE SIGNATURE: 1 2 =_= 3 4 3 __ _ _ _ _ _ _ _ _ _ _ _ __ _ ___ . _ ___ _ _ _ _ _.__ _ _ __ _ _ _ _ _ ._ _ _ _ _ 6 . .... .. . ... .____ __ _ _ ..__._ ___ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 8 9 ___,__ _ _ _ _ _ __ _ _ _ _ _ _ _ ___ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ 10 10 . . . _. _ _ _ ._ __ _ _ __ 11 _ ,_, . ___ ._ _ _ - 12 __ _ . . _ ___ - ---- 13 14 ___ 15 _ _ _  ANNEX 2  ANNEX 2. WASTEWATER QUALITY MONITORING SCHEDULE Parameters Sample Frequency Agency Total Costs for Identity Manila Water (PhP/month) TOT=46,961.00 pH Influent, quarterly DENR 14,696.00 Suspended solids effluent monthly MWSS Dissolved Oxygen Regulatory BOD5 Office COD weekly Manila Water Oil & grease Residual Chlorine Total Coliform Fecal Coliform 30-Minute settling Sample daily Manila Water 25,080.00 test from Aeration tank COD effluent Residual Chlorine effluent Dissolved oxygen Return weekly Manila Water 2,640.00 Sludge Volume activated Index sludge, Settleable Matter Mixed Suspended Solids liquor Total Solids tanks pH Raw monthly Manila Water 4,545.00 Suspended solids sludge, Cyanide Digested Cadmium sludge Chromium Copper Iron Manganese Lead Zinc  ANNEX 3  ANNEX 3. ENVIRONMENTAL COMPLIANCE CERTIFICATE (ECC) Republic of the Philippines - Department of Environment and Natural Resources NATIONAL CAPITAL REGION i 1ti - rl i#zz3s1 Cni-.nrt-ssionofAvenute, Pr^ecli e irzo: 'n City %c'9Z-2000 -_L_- i_-021)2-21fi '1009- 266 -q-f -211 ENVIRONMENTAL COMPLIANCE CERTIFICATE DENR-NCR hereby grants Environmental Compliance Certificate (ECC) for the construction and operation of the Centralized Sewage Treatment Plant project of Manila Wator Compay Inc. (MWCI) located in Dreamiand Subdivision, Palacol, Brgy. Signal Village, Taguig, Metro Manita after complying with the Environmental Impact Statement (EIS) system requirements as prescribed in the guidelines of the implementing Rules and Regulations of Presidential Decree 1586. This Certificate is issued subject to the following conditions: 1. PRE-CONSTRUCTION AND CONSTRUCTION STAGE: I That all amenitieslutilities (e.g. recreational areas, parking areas, drainage lrnes, paved areas. etc. ) affected by the project shall be immediately restored and rehabilitated: 2 That the proponent shall condtict orientation for resident engineers and contractor who will undertake and Implement the project to apprise them of the conditIons/stipulations of this ECC and the necessary measures that will mitigate adverse environmental impacts and submit report within fifteen (15) days from date of orientation; 3 That a billboard measuring 0.5 meter by 1.0 meter, bearing "NCR-2000- j i -0262-211 Issued pursuant to P.D. 1586" shall be displayed in a conspicuous location at the project site for Identifitcation and guidance. 1I. OPERATION STAGE: 4 That this Certiricate covers the operation of a 1660 cu.m. per day capacity, below ground mounted Sewage Treatment Plant to exclusively serve the existing buildings of Dreamiand Su5divlsion; 5. That adequate maintenance procedures shall be undertalen to avoid emission of objectionable odor from said facility; It. OTHERS 6. That all the proposed environrmentalt nanagemeritttteasures tontained in the Environmental Management Plan shall biieltected; 7. That should adverse impacts,odWur as a resait d' ojet'oeiatis, all ihe activities causing the sameqshafl[be lminediely'itoopped arfd'remedial, measures shall.be effected ond) all dnmagest6., life and prjpei shallH'e properly compensated to all aggnieved'parties  -An*& . Vatr :totpaTny huc -A!V-200 <LgdL -062 -211 2(09-60''1- Tg- >!i 8. That In case of abandonment or Indefinite work stoppage. the project proponent shall submi a written notification thirty (30) days before the scheduled abandonment/work stoppage and to restore the site to its onginal condition or provide safety and protective measures to prevent adverse environmental impacts that may be caused by the project: 9 That restoration works/grading of the exposed grounds shall be immediately undertaken for safety enhancement and ecological purposes: 10 That this Certificate shall be posted In a conspicuous place in the Administration's Office for easy reference and guidance; 11 That the proposed Environmental Monitoring Programl must be implemented, the report and/or result under oath of said monitoring and on the compliance with each of the conditions of the ECC shall be submitted to this Office annually, 12. Thiat a written notification shall be made to the DENR-NCR for approval, inr case the project proponent cannot comply with any of the conditions for technical reasons: and 13 That the project proponent shall allow DENR-NCR personnel with proper Identification card and travel/misslon order to conduct inspection/monitoring of the project without prior notice to oversee compliance to ECC conditions. Non-compliance with any of the above stipulations and/or misrepresentations In the IEE submitted by the proponent will be sufficient cause for the suspension or cancellation of this Certificate andlor imposition of a fine in an amount not to exceed Fifty Thousand Pesos (P50000.00) for every violation thereof pursuant to Article IX, Section 6.0, DENR Administrative Order No. 37, Series of 1996. This ECC Is not a permit rather it is a certification that the proponent has committed to undertake or Implement mitigation measures to reduce the negative impacts to acceptable level Given thist I tR 7ay of 2000. CORAZON,'C. DAVIS. OIC. Regional Executive Director Recommending Approval; SIX;E OL JR. Regional Diredtor for Environment  ANNEX 4  ANNEX 4. MANILA WATER PCO REPORT FORMAT Pollution Control Officer's Report Period Covered: - Quarter of 200 General Informnation Name of Firm: MANILA WATER COMPANY Plant Address: Natuire of Business: Utility Plant Category: 1. 0 Air Pollutive 2. l Water Pollutive 3. 3 Air & Water Pollutive NOTE: Sections To Be Filled-up. For Categoryl, Sections A & C; For Category 2, Sections B & C And For Category 3, Sections A, B & C. A. Air Pollution Aspect A.1. Process Equipment * 1 2 3 4 5 6 7 8 Air Pollution Hrs. Air Pollution Hrs. Air Cont. of Disposal Source per Material Control per Pollutants Air of Collected Installations Qtr. Processed Facilities Qtr. Monitored Cont. Solid Wastes  I - Name of Air lPollition Installatinns 2- Number of Uotirs of Operation of the Installations Dl)ring the Quarter 3 - Name of Materials Processed by the Source histallations 4 - Name or thc Pollution Control Device of the Installations 5 - Number of 11ouirs of Operation of the Devices During the Quarter 6- Name of Air Contaminants Monitored 7 - Concentration of Air Contaminants Emitted by the Installations 8 - Name the Collected Solid WVastes and Means of Disposal A.2. Fuel Burning * 1 2 3 4 5 6 7 8 Air Pollution HFrs. Air Pollution Hrs. Air Cont. of Disposal Source per Material Control per Pollutants Air of Collected Installations Qtr. Processed Facilities Qtr. Monitored Cont. Solid Wastes  I- Name of Air Pollution Installations 2- Number of liouirs of Operation of the Installation Du ring the Quarter 3 - Name ofMaterials Processedl by the Source Installations 4 - Name of the Pollition Control Device of the Installations 5 - Number of Hours of Operation of the Devices Duiring the Quiarter 6 - Name of Air Contaminants bv thc Installations 7 - Concentration of Air Conitaminants Emitted by the Installations 8 - Name the Collected Solid WVastes anfd Means of )isposal B. 1. Sources of Wastewater Sources Quantity 1. Domestic 19,820 m3 d 2. Process 200.0m3 / d 3. Cooling m3 / d 4. Washings: Equipment 2.6 m3 I d Floor 2.0 m3/ d B.2. Wastewater Treatment Process * Treatment Scheme Inrdicate wastewaterflow diirections and rates anrd tite different tunits involvel in the process. WAS RAS influent V\tUV LL PI.SEDIA ACT. AERAC E ,------________1- Sludge Cike ECLCR=2INA11 Eflitrent * Design Capacity of the Wastewater Treatment Facilities _ M3 / day * Operation of the Treatment Facilities: Average Hours/Day 24 Number of Days During the Quarter 92  - Slud(ge Mlanagement Quantity Pro(duce: n3 / day Method Used for Shldge Thickening Method Used for Sludge Treatment Method Used for Sltidge Disposal Frequency of Disposal B.3. Wastewater Characteristics Attach resilts of thie nionthly phiysical and( chemnical laboratory analysis on the IYTP effluent. Physical & Chemical Analysis include the following: Parameters Results Color Color Un Temperature pH Suspended Solids mg BOD5 mg Oil/Grease mg C. Maintenance & Repairs Wor-ks (Indicate anlY breakdowvn on the air & ivater polluttion installations problems encountered in the operation; repair & maintenance works undertaken & improvements made on the control devices.) Submitted by: Attested by: ANTONINO T. AQUINO Pollution Control Officer President  Quality and Regulation Laboratory Services Analytical Services RESULT OF ANALYSIS AC-01- 03-012 AT-01-03-013 Source of Sample Submitted by Collected by Date/Time Collected Date/ Time Submitted Analyzed by Analytical Services Personnel PARAMETER(S) RESULT(S) LIMIT(S) INFLUENT EFFLUENT Color TCU 150.00 Turbidity NTU - Settleable Matter mUL 0.50 Suspended Solids, 103'C mg/L 70.00 Dissolved Solids, 1800C mg/L - pH 6.50-9.00 Dissolved Oxygen (DO) mg/L - Biochemical Oxygen Demand (BOD)5 mg/L 50.00 Chemical Oxygen Demand mg/L 100.00 Surfactants (MBAS) mg/L 5.00 Oil and Grease mg/L 5.00 Phenols mg/L 0.10 Cadmium mg/L 0.05 Chromium (Cr'0) mg/L 0.10 Copper mg/L - Cyanide* mg/L 0.20 Iron mg/L - Lead mg/L 0.30 Manganese mg/L - Zinc mg/L Residual Chlorine mg/L BACTERIOLOGICAL EXAMINATION Total Coliform MPN/100 ml 10,000 Fecal Coliform MPN/100 ml Sample analyzed as submitted eur-equipment under repair Analyzed qualitatively Certified Correct: Orig. Sgd. ELIZABETH P. SEVILLENO Sr. Quality & Regulation Officer Date Test Report Issued: This report may not be reproduced in full and may not be used for advertisement or litigation purposes without permisssion of MWC.This report is certified to have passed the MWC Quality Control procedures for reporting of analysis results.  ANNEX 5  ANNEX 5. SAMPLE MONITORING SHEET FOR EFFLUENT QUALITY Quality and Regulation Laboratory Services Analytical Services Ctri #: LE-00-06-004 RESULT OF ANALYSIS Source of Sample Submitted by Collected by Date/Time Collected Date/ Time Submitted Date Analyzed Analyzed by Analytical Services Personnel Analytical Methods Used 'Electrometric, 2Cobalt-Platinum Scale, 3Gravimetric, 4Azide Modification, 5Open Reflux Dichromate, 6Multiple Tube Fermentation Technique PARAMETER(S) LIMIT(S) RESULT(S) pH 1 Units 6.50-9.00 Color 2 TCU 150.00 Suspended Solids3 mg/L 70.00 Dissolved Oxygen4 mg/L - Biochemical Oxygen Demand 4(BOD)s mglL 50.00 Chemical Oxygen Demand5 mg/L 100.00 BACTERIOLOGICAL EXAMINATIONr_ Total Coliform MPN/100 mL 10,000 Fecal Coliform MPN/1OOmL - REMARKS: Sample analyzed as submitted Submitted by: Certified Correct: Original Signed Original Signed MA VIRGINIA B. PINEDA ELIZABETH P. SEVILLENO Sr. Analyst Unit Head, Analytical Services Date Test Report Issued: This report may not be reproduced in full and may not be used for advertisement or litigation purposes without permission of MWC.This report is cerified to have passed the MWC Quality Control procedures for reporting of analysis results.  ANNEX 6  ANNEX 6. ENDORSEMENT FROM BARANGAY CAPTAIN , *