Metropolitan Waterworks and Sewerage System Manila Water Company, Inc. E94 Volume 18 Initial Environmental Examination of the Community Sanitation Project Manila Second Sewerage Project IBRD 4019 Project No. 16 Karangalan Village Pasig City Prepared by: Manila Water Company, Inc. 489 Katipunan Rd, Balara, Quezon City December 2001 FI CO TABLE OF CONTENTS PAGE NO. Executive Summary 7 1.0 PROJECT DESCRIPTION 1.1 BASIC PROJECT INFORMATION 13 1.2 PROJECT LOCATION 13 1.3 PROJECT RATIONALE 15 1.4DESCRIPTION OF PROJECT PHASES 1 .4.1 Pre-Operational/Construction Phase 1.4.1.1 Construction Plan 16 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 18 1.4.1.5 Types of Equipment to be Used 19 1-.4.1.6 Source of Construction Materials and Facilities 19 1.4.1.7 Support Services and Facilities Requirements and Availability 20 1.4.1.8 Estimate of Total Cut Soil Volume 20 1.4.1.9 Total Manpower Requirement 20 1.4.2 Operational Phase 1.4.2.1 Project Operation Schedule and Duration 21 1.4.2.2 Process Technology and Activities 21 1.4.2.3 Waste Production Scheme 22 1.4.2.4 Manpower Requirement 24 1.4.3 Abandonment Phase 24 2.0 BASELINE ENVIRONMENTAL CONDITIONS 2.1 STUDY METHODOLOGY 2.2LAND 25 2.2.1 Land Resource Utilization 25 2 2.2.2 Physiography and Geology 25 2.2.3 Vegetation and Wildlife 25 2.2.4 Land Acquisition Assessment 31 2.3 WATER 2.3.1 Inventory of Water Bodies 31 2.3.2 Water Quality (Surface/Ground) 31 2.4AIR 32 2.5 PEOPLE 2.5.1 Population/Beneficiary 32 2.5.2 Project Affected Persons 32 3.0 ALTERNATIVES 32 4.0 IMPACT ASSESSMENT 4.1 IMPACT IDENTIFICATION 4.1.1 Impacts During Construction Phase 34 4.1.2 Impact During Operation Phase 45 4.21MPACT PREDICTION AND EVALUATION 47 4.3UNAVOIDABLE AND RESIDUAL IMPACTS 48 5.0 ENVIRONMENTAL MANAGEMENT PLAN 5.1 IMPACTS MITIGATION / ENHANCEMENT PLAN 48 5.2 ENVIRONMENTAL MONITORING ACTION PLAN 53 6.0 COMMUNITY CONSULTATION PROCESS 54 LIST OF FIGURES . ;e . ;e_,5 1 Location Map of Karangalan Village 14 2 Proposed Implementation Schedule 17 3 General Treatment Process Scheme 23 4 Photographs of STP Sites 26-29 5 j Location Map of STP Sites 35-44 LIST OF TABLES 1 Analysis of Septic Tank Effluent Quality 15 2 Land Requirement for STPs 18 3 Design Capacities of STPs 18 4 Estimates of Soil Excavation Volumes 20 5 Influent Flow Characteristics 21 6 DENR Effluent Parameters for Class C Waters 22 7 Vegetative Cover 30 8 Sources and List of Potential Environmental 33 Impacts 9 Typical Noise Emissions of Construction 45 Equipment at Various Distances from Source in dB(A) 10 Sludge Production of Various Wastewater 46 Treatment Processes 11 Summary of Assessment of Environmental Issues 47 / Impacts 12 Environmental Management Plan 48 13 Environmental Monitoring Action Plan 53 14 Institutional Monitoring 54 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-2000-02- 19-0289-211 4 Manila Water PCO Report Format 5 Sample Monitoring Sheet for Effluent Quality 6 Endorsements from the Barangay Captains 7 1994 Memorandum of Agreement between NHA and MWSS 6 EXECUTIVE SUMMARY The proposed project for Karangalan Village is a sub-project of the Community Sanitation Project, 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 Pasig River by approximately six thousand (6,000) households in Karangalan Village. The project involves the improvement and rehabilitation of the sewerage system in the Village. Specifically, the project includes the rehabilitation of the existing sewer lines and lift stations, installation of new sewer lines to intercept sewage flows from the storm drain, as well as untreated wastewater flows from individual septic tanks and households without septic tanks. Sewage treatment plants (STP) will be constructed to treat the wastewater flows. In conformity with the requirements of the Department of Environment and Natural Resources (DENR), an Environmental Compliance Certificate (ECC) NCR-2000-02-19-0289-211 issued pursuant to P.D. 1586 was secured for the project. 1.0 BASELINE ENVIRONMENTAL CONDITIONS Karangalan Village belongs to the Third Urban Development Project (Urban Ill) of the National Housing Authority. Urban IlIl projects were funded through a loan secured in February 1980 by and between the Government of the Philippines and the International Bank for Reconstruction and Development. Karangalan Village was developed in 1985 on what used to be rice fields. The Village is located along Imelda Avenue. Based on municipal and barangay boundaries, portions of the Village belong to Barangays Manggahan and de la Paz in Pasig City and Barangay San Isidro in Cainta, Rizal. Karangalan Village is divided into nine phases. Phases IA, IB and IC are on the northwestern side while phases 2A, 2B1, 2B2, 2C1, 2C2 and 2C3 are on the southeastern side. The Village is bounded by Vista Verde Subdivision in the east, Pasig Greenpark Subdivision in the west and Metroville Subdivision in the south. Hakbangan Creek bounds the northern portion of the housing area. The Village is home to an estimated 6,000 households. Included in the estimate/projection are those from the newly constructed medium rise housing (MRH) units. The Karangalan MRH consists of 10 buildings, each with 60 residential units. Floral population within Karangalan Village 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 community has two distinct seasons: 7 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 serving the estimated 42,000 population of Karangalan Village is made up of polyvinyl chloride (PVC) and concrete sewer pipes with diameters ranging from 150-250 millimeters. From each household, wastewater flows to sewer lines directed to nine (9) separate lift stations. The stations are equipped with pumps that lift wastewater to each of the nine (9) communal septic tanks (CST) serving each phase. Presently, the lift stations are non-functional. The septic tanks are typically designed with approximate dimensions of 9mxl 8mx3.5m (LxWxD). The septic tanks consist of a grit chamber, wet well and digestive chamber. The flow of raw wastewater to the grit chamber is controlled by two sluice gates. The influent is screened by a cast iron bar screen (25mmx30mm) before entry to the wet well. The digestive chamber is made up of three compartments. The septic tanks have different disposal points. The description and disposal points of the septic tanks are listed in the table below. Description of Communal Septic Tanks (CST) CST # Location and (Boundaries) Area Units Discharge (mi) Served Point 1 Block 31 (Kayumanggi/K-1 7/K- 406 846* Hakbangan 18/Karunungan), Phase IA Creek 2 Block 63 752 777* sewer (Kaayusan/Kalayaan/Karunungan), manhole Phase 1C 3 Block 84 (Kaayusan/Kabanalan/K- 925 961 Drainage 44/K-45), Phase 1 B 4 Block 58 (Kabutihan/Katipiran/K-1 18), 470 945 Hakbangan Phase 2A Creek 5 Block 21 230 401 sewer (Kagalingan/Kapatagan/Kaalaman, manhole Phase 2B1 6 Block 128 900 318 sewer (Kaunlaran/Kakisigan/Kalakasan/Kasi- manhole nupan), Phase 2C1 7 Block 14 759 357 drainage (Kaalaman/Kapayakan/Katiyakan), Phase 2B2 8 Block 61 (Kaluwagan/Katimugan/KC- 447 742 sewer 25/KC-21), Phase 2C2 manhole 9 Block 61 (Kaluwagan/Katimugan/KC- 754 588 Drainage 125/KC-21), Phase 2C2 *elementary school not counted 8 Settled wastewater from CST #1 flows to a pilot wastewater treatment facility-a biomodule project of the Japan International Cooperation Agency (JICA). The biomodule was constructed in -1 U9 1 and is currently operated and maintained by Manila Water. The biomodule has a design flow of 36-150 m3/day. In the biomodule system, the microorganisms in the activated sludge are stored in a string-type media installed in the aeration tank. Oxygen required for activation of the microorganisms is introduced by way of aeration pumps. From the disposal points listed above, all settled/treated wastewater flows to Hakbangan Creek which is a tributary of Balante Creek. This water body releases into the Marikina River which ultimately discharges into the Pasig River. During the rainy season, the BOD5 of Pasig River ranges from 3-5 mg/L. This loading reaches 7-10 mg/L during dry season. Pasig River water quality 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.); 3. Industrial Water Supply Class I (For manufacturing processes after treatment). Defective lift station pumps, substandard design and materials, and settled wastewater in the sewer lines are indicative of the need to rehabilitate and improve the existing sewer system. 2.0 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. 9 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 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. I0 OPERATIONAL PHASE 1I.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 a 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 . 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 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 network 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 3.0 ENVIRONMENTAL MONITORING PLAN Environmental monitoring will be the responsibility of Manila Water Company. I0i-t S -Li _-_ 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. Odor * Daily Sludge . STP site and . Weekly accumulation/Clogging perimeter . At STP site . Sewer network . Communal septic tanks 12 1.0 PROJECT DESCRIPTION 1.1 Basic Project Information Name of Project KARANGALAN VILLAGE COMMUNITY SANITATION PROJECT MANILA SECOND SEWERAGE PROJECT Address . KARANGALAN VILLAGE, Barangay Manggahan and de la Paz, Pasig City; Barangay San Isidro, Cainta 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 Karangalan Village 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 Karangalan Village. The project site is along Imelda Avenue which is accessible through Marcos Highway or Ortigas Avenue. Figure 1 shows the vicinity/location map of the project. 13 Figure 1 a 0.1 0.2 ___-Project Area Water Bodies 14 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 Karangalan Village as shown by the analysis of the effluent of one of the septic tanks in a similar area (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 Pasig River. Table 1 Analysis of Septic Tank Effluent Quality Limit(s) Effluent Parameter DENR-EMB Sample pH 6.5-9 7.3 @ 23.2 °C Suspended solids, mg/L 70 106.00 Dissolved Oxygen, mg/L 0.00 Biochemical Oxygen Demand 50 190.00 (BOD5), mgIL 0100 Chemical Oxygen Demand, mg/L 100 263.90 Total Coliform Count, MPN/100 ml 10,000 17:x 106 Fecal Coliform Count, MPN/100 ml 11 x 10l 15 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 December 2002 (300 calendar days). Figure 2 shows the implementation schedule for the project. Manila Water Company will undertake the project implementation. 1.4.1.2 Total Surface Development Block The service area is approximately 75.2 hectares and is estimated to have a current population of 42,000. The project will serve all residential and commercial establishments within Karangalan Village. 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 the construction of STPs, laying of sewer lines to connect Karangalan MRH and new developments to existing communal septic tanks and the rehabilitation of existing sewer lines and lift stations. The STPs will be located underground, when necessary. The area occupied by the CSTs, as described in Table 2 below will be utilized for the STPs. Sewer lines totaling approximately 500 meters will be opened for civil works. 16 Figure 2 Proposed Implementation Schedule for the Karangalan Village Community Sanitation Project Week No. 1 4 5 617189110 12113 14115 1617118119202122 232425262728 29 301 3213334 353637 383940 Layout and __ 5 ____ ____________- __ TII Temporary Field Steelwork, Form Removal and Curing Excavate and Install Sewer Line Tes.10rl F f ing o;0f Sewer Line1 Install Treatment |ll|lll14 E 0 0 3 f Equipment I 1 17 Table 2 Land Requirement for STPs _ _ _ __ 1 Block 31 (Kayumanggi/K-1 7/K-1 8/Karunungan), 406 Phase 1A 2 Block 63 (Kaayusan/Kalayaan/Karunungan), 752 Phase 1 C 3 Block 84 (Kaayusan/Kabanalan/K-44/K-45), 925 Phase 1 B 4 Block 58 (Kabutihan/Katipiran/K-1 18), Phase 2A 470 5 Block 21 (Kagalingan/Kapatagan/Kaalaman, 230 Phase 2B1 6 Block 128 900 (Kau n la ra n/Ka kis igan/Ka la kasa n/Kasi-nu pan), Phase 2C1 7 Block 14 (Kaalaman/Kapayakan/Katiyakan), 759 Phase 2B2 8 Block 61 (Kaluwagan/Katimugan/KC-25/KC-21), 447 Phase 2C2 9 Block 61 (Kaluwagan/Katimugan/KC-25/KC-21), 754 Phase 2C2 *elementary school not counted 1.4.1.4 Major Openings and Construction Activities The complete sewerage system will include the following components: * Collection sewers (diameter=150,/200/250 mm) with a total estimated length of 100 meters leading to the CSTs and STPs * STPs with the following design capacities: Table 3 Design Capacities of STPs _. PI 1 931 2 1,193 3 764 4 1,265 5 577 6 504 7 484 8 968 9 777 18 * Sewer lines (diameter=250 mm) with a total estimated length of 400 meters from STP discharge point to existing storm drainage/Creek Civil works to be implemented are as follows: For STP/Lift Stations For Pipelaying * Site clearing * Pavement cutting * Earthworks * Shoring and removal - excavation and handling * Excavation and handling - dewatering * Dewatering - backfill and compaction * Pipelaying - lean concrete/ gravel bedding * Backfill and compaction + Concrete Works * Testing pavement restoration - shoring and soil protection * Clearing / miscellaneous activities - formworks - concreting * Electro-mechanical - internal and external pipeworks - mechanical installation - electrical installation * Site restoration * Clearing/ miscellaneous activities 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 * 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 19 * 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 Karangalan Village or any other party will be made by the contractor. 1.4.1.8 Estimate Total Cut Soil Volume(for pipelaying) Table 4 presents the total system length, average excavation depth of the sewer pipes and area of the project. Table 4 Estimates of Soil Excavation Volumes Estimated Average Excavation Average Dimensions Depth (m) Excavation (sq.m) Volume (cu. m.) STP site 5,600.00 6.0 33,600.00 Sewer line 275.00 1.5 412.50 250mm0 TOTAL 34,012.50 *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 300 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 20 1.4.2 Operational Phase 1.4.2.1 Project Operation Schedule and Duration Completion of construction is expected by December 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. * 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 5 below: Table 5 Influent Flow Characteristics CST No. TSS BOD5 COD Oil and PH a (mg/I) (mg/l) (mg/I) Grease (mg/Il) 1 220 300 500 100 6-9 2 100 200 350 50 6-9 3 100 200 350 50 6-9 4 220 300 500 100 6-9 5 100 .200 350 50 6-9 6 100 200 350 50 6-9 7 100 200 350 50 6-9 8 220 300 500 100 6-9 9 220 300 500 100 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 6 below: 21 * Wastewater treatment will reduce the BOD5 from 200-300 mg/L to 50 mg/L, at the minimum. This illustrates an STP treatment efficiency of 75-83%. Table 6 DENR Effluent Parameters for Class C Waters 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 Karangalan Village may be below- or aboveground. In case a bid for belowground proposal is awarded, 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: * 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 3. 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. 22 Figure 3 General Treatment Process Scheme Bd(Dcgc (SBPIDEA Advated SLzige)V3se LKg sludge Pe-LM SIUJe a sci oudtce V\Sl A long-term disposal scheme for biosolids from the STPs 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, corn 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 STPs 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 STPs 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. The NHA has also agreed to provide a liaison officer who 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. 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. 24 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 Feb. 19, 2001 has been issued by the DENR-Regional Office (Annex 3). 2.2 LAND 2.2.1 Land Resource Utilization Karangalan Village has an estimated land area of 75.2 hectares. Approximately 60% of the total area is devoted to residential use, while 40% accounts for commercial, institutional, and community facilities and open spaces. 2.2.2 Physiography and Geology Karangalan Village 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 sites for the STPs are inside the area presently occupied by the lift stations and communal septic tanks. Figures 4A-4D show photographs of the proposed sites. 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 listed below. 25 Figure 4A - ~~~Location of CST 2 F-W ' 6 _~~~~~ 3 !'l i ~~~~~Location of CST 2 .-,'~~~~ sf. ..*- -, -q 26 Figure 4B ~~~~~~~~~~~~~~~~~~~- _4x._ } Locatio~~~~~~~n of CST3 5-~~~~~~Z- 27 Figure 4C ' . 8" .2 . Location of CST 5 C, M -.i . -. . -~~~~~~~~ s ~ -;I t _ ~~~~~:~ a ~er q- Iq ;,i Li ri . _ ,_ ~._- - . - 1 -4 iJ - .- F r ~ ~ ~ ~ ~ ~ C s: - ir? 5t . wa ~~~Location of CST 6 - - 2 -- --_ F-d ,~~2 Figure 4D - < -8~ ' - . Location of CST 7 ti#,.~~~~~Lcain o '.--~2 Table 7 Vegetative Cover-Karangalan Village g my =! - . , 9 - Mango (Mangifera indica), Banana (Sapientum spp), Santol (Sandoricum koetjape), Jackfruit (Artocarpus heterophylla), Guyabano (Annona muricata), Coconut (Cocos nucifera), Tamarind (Tamarindus indicus), Palm (Chrysalidocarpus lutescens), Gabi, Saluyot, Narra (Pterocarpus indicus) 2 Aratiles (Muntingia calabura), Tamarind (Tamarindus indicus), Banana (Sapientum spp), Coconut (Cocos nucifera), Mango (Mangifera indica), Kangkong, Guava (Psidium guajava), Sayote, Saluyot, Eucalyptus (Eucalyptus sp), Camansi (Artocarpus altilis), Achuete (Bixa orellana), Gabi 3 Banana (Sapientum spp), Ipil-ipil (Leucaena leucocephala), Star apple (Chrysophyllum cainito), Jackfruit (Artocarpus heterophylla), Pomelo (Citrus grandis), Achuete (Bixa orellana) 4 Mango (Mangifera indica), Coconut (Cocos nucifera), Banana (Sapientum spp), Ipil-ipil (Intsia bijuga), Gabi, Cassava (Manihot esculenta), Papaya, (Carica papaya), Alibangbang (Bauhinia purpurea), Saluyot, Okra, Santol (Sandoricum koetjape), Pomelo (Citrus, grandis), Talahib, Sweet potato, Sugarcane 5 Mango (Mangifera indica), Coconut (Cocos nucifera), Banana (Sapientum spp), Gabi, Papaya, (Carica papaya), Saluyot, Santol (Sandoricum koetjape), Pomelo (Citrus, grandis), Camansi (Artocarpus alftilis), Guyabano (Annona muricata), Jackfruit (Artocarpus heterophylla), Guava (Psidium guajava), Avocado (Persea americana), Narra (Ptercocarpus indicus), Callistemon 6 Mango (Mangifera indica), Banana (Sapientum spp), Gabi, Santol (Sandoricum koetjape), Guyabano (Annona muricata), Jackfruit (Artocarpus heterophylla), Guava (Psidium guajava), Avocado (Persea americana), Tamarind (Tamarindus indicus), Talahib, Sweet potato, Papaya (Carica papaya), Kamias (Averrhoa bilimbl), Horse radish (Moringa oleifera), Sili (Capsicum spp), Atis (Annona squamosa), Blumea balsamifera, Bidens pilosa, Saccharum spontaneum, Vitex parvifolia 7 Mango (Mangifera indica) ), Coconut (Cocos nucifera), Kamias (Averrhoa bilimbi), Tamarind (Tamarindus indicus), Avocado (Persea americana), Santol (Sandoricum koetjape), Guava (Psidium guajava), Jackfruit (Artocarpus heterophylla), Atis (Annona squamosa), Chico, Tiesa (Pouteria campechiana), Guyabano (Annona muricata), Star apple (Chrysophyllum cainito), Sampaguita (Jasminum sambac), Katakataka, San Francisco (Codiaeum variegatum), Broussonetia luzonica, Tecoma stans 8 Jackfruit (Artocarpus heterophylla), Banana (Sapientum spp), Sugarcane, Santol (Sandoricum koetjape), Mango (Mangifera indica), Gabi, Okra, Cassava (Manihot esculenta), Pomelo (Citrus grandis), 30 Bidens pilosa, Sida rhombifolia, Urena lobata 9 Mango (Mangifera indica), Ipil-ipil (Leucaena leucocephala), Guava (Psidium guajava), Camansi (Artocarpus altilis), Dapdap (Erythrina variegata), Banana (Sapientum spp), Kamias (Averrhoa bilimbi), Guyabano (Annona muricata), Mahogany (Swietenia macrophylla), Macahiya (Mimosa pudica) Faunal population is limited to household pets and stray animals. 2.2.4 Land Acquisition Assessment Manila Water will be allowed to use parcels of land for the nine (9) STPs by way of a grant of perpetual easement from the National Housing Authority-the owner/developer of the community. At no time shall land be acquired for the project. All identified parcels of land are free from informal settlers. 2.3 WATER 2.3.1' Inventory of Water Bodies The project area is near Hakbangan Creek which ultimately drains to the Pasig River. At present, Pasig River does not meet Class C standards (ie., suitable for propagation and growth of fishes, recreational uses and industrial water supply) especially during the summer months when there are no sufficient inflows. At these times, the BOD in Pasig River reaches 10 mg/L, which is 12 times higher than the permitted level for Class C water; DO drops to zero; and total coliforms exceed the MPN/100 ml standard by up to several thousand degrees, 2.3.2 Water Quality (SurfacelGround) Surface Water QualitY. Pollution loading to the Pasig River will be reduced since septic tanks and raw wastewater from the project area will no longer be discharged directly to the River. Effluent from the plant will comply with DENR Effluent Quality standards sufficient for Class C waters. Sixty five percent (65%) of the pollution loading to the Pasig River comes ffrom domestic waste. Without any sewerage or sanitation interventions, the pollution load entering the river is expected to increase dramatically unless necessary steps to reduce pollution loading from 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. 31 2.4 AIR Pasig City and Cainta experience 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 27.4°C and average annual humidity is 77% for Metro Manila. Air quality within Karangalan Village 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 is 42,000 based on full occupancy of the 6,000 households. 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 Village, its neighboring communities and pedestrians and motorists. Once operational, the project will directly affect the residents of the entire Karangalan Village. 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 Karangalan Village 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 being maintained. * Some households are directly discharging raw wastewater to the Hakbangan Creek. 32 Bidders for the project may opt to add another STP to the biomodule site (CST 1) and construct eight (8) more secondary treatment facilities or put up secondary treatment for the effluent of each CST combining treatment for flows from CSTs 2 & 3 and CSTs 5 & 6 in doing so. The sites will not require relocation of inhabitants during construction. Figure 5 shows the STP location maps. 4.0 IMPACT ASSESSMENT 4.1 IMPACT IDENTIFICATION Table 8 Sources and List of Potential Environmental Impacts _ M0 0r S - . - - .- 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 Karangalan Village, 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. 33 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 Pasig River 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. 34 Figure 5 Location of Sewage Treatment Plants FGtTRE lI.F- 0G R F0.13 0 FiGliRE 1O.3 STPr 7 FIGUM~~~~~~ .G FIU. ...C 35 Figure 5B Proposed STP Site 1 Manila Water 200mmO PVC PIPE 350mm0 PIPE CULVERT TOP OF PIPE EL.20.66 TOP OF PIPE EL.20.68 BOT. OF PIPE EL.18.97 BOT. OF PIPE EL.18.83 EXISTG SEPTICE TANK. EXISTO BEPTILIZED K EXIST G GRIT CHAMBER G C L/ OPEN SPACES CAN BE UTILIZED/\ _ FOR OTHER TREATMENT UNITS ( 100 sq. m. ) 36 Figure 5C Proposed STP Site 2 Manila Water NEW CYCLONE WIRE GATE IC, EXISTCG CYCLONE PROPOSED WIRE FENCE ~~~~~~~~~~UNDERGROUND SIP EXISTING CONSTRUCT NEW BASKETBALL COURT E SE-PTIC TANK ~~~~~~~~ABOVE THE PROPOSED STP ~~~ ~NEW CYCLONE WIRE FENCE T__ _ _ _ _ _ _ S T P E F F L U E N T L IN E T O NEWMCHCLONE E1~4IE NEAREST DRAINAGE MANHOLE 250mmO _ A ~~~~H O H - -NE0W CYCLONE-WIRE ATE X SM 250mmoM 0n020moPV M 37 Figure 5D Manila Water Proposed STP Site 3 E _i-EXSTGFEE C FENCE ElTN SEPV TK 4 3 S T. < ELINETO BE ABANDONED PROPOSED STP R (MAYBEEUMNHEGROUND (MAYBOEUNEGROUND 38~~~~RA3VERUD Figure 5E Proposed STP Site 4 Manila Water 04 3 ~UTILIZE EXISTING SEPTIC TANK STRUCTURE STP EFFLUENT LINE 200mm0 ISMH SMH LJ ;\ A I/< t ADDITIONAL AREA FOR PROPOSED STP IF REQUIRED - A_ POPOSED CYCLONE WIRE FENCE EE ~ ~ ~ ~~~~~~~ XISTING SEPTIC TANK MAYBE USED ) 1 1SMH I39 39 Figure 5F Proposed STP Site 5 Manila Water 10 WEP/ STP EFFLUENT LINE TO EXISTING DRAINAGE CANAL / l ~~~~~~~~~~RES. PROPOSED STP (1 90 SQ. M.) ABOVEGROUND OR UNDERGROUND EXISTING DRAINAGE LINE / g o ST-5 z X MH~~~~o w / g9w EXISTING PIPE LINE TO BE ABANDONED 40 Figure 5G Proposed STP Site 6 Manila Water STP EFFLUENT LINE TO \ \4 NEAREST DRAIAG LIN EXIST'GXST SEPTIC TAK TO BEAI ABANDONE - H l ST1 Figure 5H Proposed STP Site 7 Manila Water ax < ~~~~JE3 7 003 @ ~~~~~~3 1J° < >\ ~~~~~PARKING LOT DMH K A A L A M A N R O A DX \ STP EFFLUENT LINE \ ~~~~~~~~1W 65O ST7 EXIST'G PIPE LINE TO BE ABANDONED SEPTIC TANZ g g E o0 08.~~~~~~~~~~~~~~~~~~~~~0 SMH H 20H0 200mm 2 JB NOTE: PROP. STP MAYBE ABOVEGROUND 42 OR UNDERGROUND Figure 51 Proposed STP Site 8 Manila Water EXISTING FENCE TO BE REMOMED N H-~~~~ EXISTING SEPTIC TANK SHALL BE UTILIZED AS STP AND ADJACENT DRAINAGE CANAL I AREA MAYBE USED IF REQUIRED STP EFFLUENT LINE WEP SS NEW CYCLONE WIRE FENCE L EXISTG EFFLUENT TO BE ABANDONED 43 Figure 5J Proposed STP Site 9 Manifa Water EXISTVG SEPTIC TANK EFFLUENT L s LINE MAYBE USED IF POSIBLE a E UTILIZE EXISTING SEPTIC - TANK STRUCTURE 0~~~~~~~~ C)~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~~~~~~~~~~~A DMH K C - 3 5 S T. SM ) 20Omrn0 PCC 200mmo PVC XIST GADDITIONA ARE | k GC X SX / P/ ~~~~~PROPOSED CYCLONE WIRE FENCE O< SMH STP EFFLUENT LINE N / ITS IF REEQ'D < SMH <~~~~~~~~~~~~~~~~~~~~ a S \ 9 . \~~~~~ \\ \\ \~~~ 44 Table 9 shows the typical noise emissions of common construction equipment used at various distances from source. Table 9 Typical Noise Emissions of Construction Equipment at Various Distances from Source in dB(A) _ 0 - I - - _I . - 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 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 Karangalan Village. 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, Karangalan Village accounts for an estimated 1,493 kg/day BOD5 loading to the Pasig River. The implementation of the project will contribute to the improvement of the quality of water in Pasig River by reducing discharge of untreated/partially treated wastewater. From a pollution loading of 1,493 kg BOD5/day, loading will be reduced to 224-373 kg BOD5/day, or a 75-85% BOD reduction, when the STP becomes operational. 45 C. Socio-Economic A flat sewer charge equivalent to 50% of the water charge is already included in the water bill of those served by the biomodule. Once the STPs are commissioned, the whole service area will pay the sewer charge. This fee will help cover the costs of the operations and maintenance of the STP and the sewer network. This arrangement has been explained to the estate manager-the National Housing Authority, which disseminates project information to the populace. 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, which are more costly to manage. D. Sludge Disposal and Management The existing septic tanks in the area produce an estimated 283,500 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 10 Sludge Production of Various Wastewater Treatment Processes Treatment Process Typical Dry Solids ,I ; V Production (kglm3) S . ,;IU Activated sludge 85 634,355 Trickling filtration 70 522,410 Extended aeration 100* 746,300 Aerated lagoon 100* 746,300 *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 46 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. Starting 2004, a septage treatment facility will also be available to treat sludge and septage from the STP. This septage treatment facility 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 11 below presents a summary of the assessment of the impacts of the project. Table 11 SUMMARY OF ASSESSMENT OF ENVIRONMENTAL ISSUES/IMPACTS Environmental Impact Assessment Issueslimpacts Classification Probability Reversibility Time Magnitude Scale 1. Construction Phase Air/Dust Pollution . * _ < 4 Noise . < IV Traffic * < 4. Soil Erosion El 4. Water Pollution L < 4 Increased . Employment +S4 2. Operational Phase Water Pollution o > Contamination of drinking L I > 4. water supply Odor Pollution < 0 < v Noise o 4< 4. Accidents/hazards I < 4. Health benefits + S > Property Value and Commercial + * + >4 Attractiveness Environmental sanitation + * 40 > enhancement + Positive 0 Unlikely to occur 4 Reversible < Short term + Insignificant - Negative * likelytooccur + Irreversible > Long term v Moderate + Severe 47 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 Village and its immediate environs, 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 12 below is a matrix on the environmental management plan of the proposed project. Table 12 ENVIRONMENTAL MANAGEMENT PLAN CONSTRUCTION PHASE 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. 48 2. Air pollution a 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 NOX) work specifications and work 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 . 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 49 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 MWCI from the residents of the 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 MWCI 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. 50 OPERATIONAL PHASE Potential Manner 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 51 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 (d eod orizer/ad so rbent/m as k in 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 . 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 I 52 5.2 ENVIRONMENTAL MONITORING ACTION PLAN Tables 13 and 14 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 13 Environmental Monitoring Action Plan 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. * STP site and . Daily Odor perimeter Sludge . At STP site . Weekly accumulation/Clogging . Sewer network . Communal septic tanks 53 Table 14 Institutional Monitoring Item Reporting Scheme Reporter Recipient Frequency Pre-Construction Phase Confined Space Contractor Manila Water every entry into a Permit confined space Welding Contractor Manila Water once Accreditation . Construction Phase STARRT Card Contractor Manila Water daily Progress Report Manila Water MWSS 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 included consultations with barangay officials, community developers and managers (see Annex 6-endorsement of barangays). Consultation with the community is done in coordination with the National Housing Authority (NHA) who is the owner and developer of the project. The NHA also acts as estate manager. Community issues, such as those concerning water and sewerage, are explained to the community through the estate manager. Information and developments are echoed to the community also through the NHA. The 1994 Memorandum of Agreement (see Annex 7) by and between the MWSS and the NHA further specifies the responsibilities for the rehabilitation of the sewerage system of Karangalan Village. 54 -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 2 LOCATION: DAY 2 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 N/A 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: 2 4 5 6 8 9 . 10- 12 13 1 ...... . - 2 1 _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ANN-EX 2 ANNEX 2. WASTEWATER QUALITY MONITORING SCHEDULE Parameters Sample | Frequency Agency Total Costs for Identity | Manila Water I___________ (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 Departmcnt of Environment and Natural Resources NATIONAL CAPITAL REGION ~i O. ;e1 .'.... : t 5 Congressional Avenue. P -ject a. oj!ezon City 7-t1 Nj-.. 926-09-29 - 926-09-07 ,M%U.-2000- W. - 19 -0289-211 2009- 284 - 'RS - 211 ENVIRONMENTAL COMPLIANCE CERTIFICATE DENR-NCR hereby grants Environmental Compliance Certificate (ECC) for the construction and operation of the Nine Units of Centralized Sewage Treatment FPlant project of Manila Water Company Inc. (MWCI) located in Karangalan Village, Pasig City 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 to the following STP projects Treatment Plant No. Location -Capacity(m3'd) 1 Blk. 31 (bounded by KayurnangilK-17,'Karunungan) Phase 1A 861 2 Blk.63 (bounded by Kaayusan/Kalayaan/Karunungan) Phase 792 iC 3 Blk.84 (bounded by Kaayusan!Kabanalan1K-441K-45) Phase 961 1B - _ _ . 4 Blk.58 (bounded by KabutihaniKatipiranrK118) Phase 2A 945 5 Blk.21 (boundedby KagatinganiKapatagan.iKaalaman)Phase 435 2813 6 Blk 128(bounded by 318 KauniaranfKakisiganiKalakasan/Kasinupan).Phase 2C1 7 Blk 14 (bounded by Kaataman/KapayakaniKatiyakan)Phase 357 282 1 8 Blk 61 (bounded by Kaluwagan.:Katimugan/KC-25?KC- 742 21)Phase 2C2 9 | BIk 81 (bounded by KC-36iKC31!KC35)Phase 2C3 588 subject to the following conditions: I. PRE-CONSTRUCTION AND CONSTRUCTION STAGE: 1. That all amenities/utilities (e.g. recreational areas, parking areas, drainage lines, paved areas, etc. ) affected by the project shall be immediately restored and rehabilitated: Waania 'Water Company Inc. N-2000-° -.P>_#-0289-21 2009-284-'S-2fl 2. That the proponent shall conduct orientatlon for resident engineers and conthactor who will undertake -and implement the project to apprise them of.the conditions/stipulations of this ECC'aand the necessary measures that will mitigate adverse environmental impacts and submit report within fifteen (15) days from date of orientation; 3. Thiat a billboard measuring 0.5 meter by 1.0 meter, bearing NCR-2000- n- - rq__-0289-211 Issued pursuant to P.D. 1B86" shall be displayed in a conspicuous-location at'the project sitefor identification and guidance; I. OPE-RATION STAGE: 4. That adequate maintenance procedures shall be undertaken to avoid emission of objectionable odor from said facility; Ill. OTIlERS 5. That all the proposed environmental management measures contained in the Environmental Management'Plan shall be effected; 6. That.should adverse impacts occur as a result of project operations, all the activities, causing the same shall be immediately stopped and remedial measures shall be effected and all damages to life and properly shall be properly compensated to all aggrieved-parties; 7. That in case of abandonment or indefnite work stoppage, the project proponent shall submit a written notification thirty. (30) days before the scheduled abandonment/work stoppage and :institute protective measures to prevent adverse environmental impacts that may.be caused by the project, 8. That restoration works/grading of the exposed grounds shall' be immediately undertaken for safety , enhancement and ecological purposes;' 9. That this Certificate shall be posted in a 'conspicuous place in the Adininistration's Office.for easy reference and guidance; 10. That the proposed Environmental Monitoring' Program must be implemented, the report and/or result under oath of said monitoring shgill:be submitted to this Office-annually; 11. That a written notification shall. be made -to the DENR-NCR for approval, in case the project proponent 'cannot comply with any of the conditions for technical reasons; and !Mani( Water Compary Inc. NC-2000- nj -_fL._-0289-211 2009-284- q1'5-211 13. That the project proponent shall allow DENR-NCR personnel with proper identification card and travel/mission 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 and/or imposition of a fine in an amount not to exceed Fifty Thousand Pesos (P50,000.00) 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 this _ day of ; _ 00_ CORAZON C. DAVIS OIC, Regional Executive Director Recommending Approval: SIXTkd_4TINO,JR. Regional Director for Environment ANNEX 4 ANNEX 4. MANILA WATER PCO REPORT FORMAT Pollution Control Officer's Report Period Covered: Quarter of 200_ General Information Name of Firnm: MANILA WATER COMPANY Plant Address: Nature of Business: Utility Plant Category: 1. 0 Air Pollutive 2. n Water Pollutive 3. LI 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 Facilitie Qtr. Monitored Cont. Solid Wastes I - Name of Air Pollution Installations 2- Number of flours of Operation of the Installations During the Quarter 3 - Name ofMaterials Processell by the Source Installations 4 - Name of the Pollution Control Device of the Installations 5 - Number of llours of Operation of the Devices During the Quarter 6 - Name of Air Contaminants Nionitored 7 - Concentration of Air Contaminants Emitted by the Installations 8 - Name the Collected Solid Wastes and Means of Disposal A.2. Fuel Burning * 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 Poliltion Installations 2 - Number of Hours of Operation of the Installation During the Qutarter 3 - Name of Mlaterials Processedi by the Souirce Installations 4 - Name of the Pollution Control Device of the Installations 5 - Nuimllber of lHouirs of Operation of the l)evices During the Qluarter 6 - Name of Air Contaminants by thc Installations 7 - Concentration of Air Contaminants Emitted by the Installations 8 - Name the Collected Solid Wastes and NMeans of Disposal B.1. Sources of Wastewvater Sources Quantity I . Domestic 19,820 m3/ d 2. Process 200.0 m3I d 3. Cooling m3 I d 4. Washings: Equipment 2.6 m3 / d Floor 2.0 m3 /d B.2. Wastewater Treatment Process * Treatment Scheme Indicate ivastewaterfloiv diirections and rates and the different units involved in the process. WAS RAS i.I Influent WE ELPRI. SEDIM. C.ARIC SEC.SEIv Sludge Cake E4?VNBDDIGESTER CH-LONF 11Cn Effluent * Design Capacity of the Wastewater Treatment Facilities m3 I day * Operation of the Treatment Facilities: Average Hours/Day 24 Number of Days During the Quarter 92 * Slhiue Management Quantity Produice: m3 / day Method Used for Sludge Thickening Method Used for Sludge Treatment Method Used for Sludge Disposal Frequency of Disposal B.3. Wastewater Characteristics lIttach r esullts ofthe monthly phlsical and chentical laboratoiy analysis on the IYTP efflutent. Physical & Chemical Analysis include the following: Parameters Results Color Color Un Temperature pH Suspended Solids mg BODs mg Oil/Grease mg C. Maintenance & Repairs Works (Indicate any breakdown on the air & water pollution installations problems encountered in the operation; repair & maintenance works undertaken & improvements made on the control devices.) Submined 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)s 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: Ong. 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 Serjices Ctrl. # 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, Open Reflux Dichromate, Multiple Tube Fermentation Technique PARAMETER(S) LIMIT(S) RESULT(S) pH' 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 mg/L 50.00 Chemical Oxygen Demand5 mg/L 100.00 BACTERIOLOGICAL EXAMINATION6 Total Coliform MPNI100 mL 10,000 Fecal Coliform MPN/1 OOmL 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. ENDORSEMENTS FROM BARANGAY CAPTAINS 11PPUTh2C OF THE PHILIPPINES .1AN(CJGG.AUAN lAItIANGAY COUNCIL PASIG CITY 4 September 2000 To vjhom it may conc-rn: With the privatization of W,wSS, Manila Water Company, Inc. (MWCI) was given the right to exclusively provide water and sewerage services to the Eastern part of Metro Mlanila. In line with its service obligations, the MWCI has elected to upgrade the sewerage system of Karangalan Village. WHEREAS, the sewerage system in Karangalan Village requires repair and rehabilitation due to design considerations and degradation caused by natural deterioration; WHEREAS, the present condition of sanitation in the area may present hazards to the health of the residents of the community; WHEREAS, the existing sewer treatment facility needs to be upgraded so that the wastewater effluent will rneet environmental standards; WHEREAS, the MWCI commits to upgrade the sewerage system and improve the sewer treatrnent facility of Karangalan Village; -WHEREAS, the MWCI commits to obtain the Barangay Council's concordance prior to commencement of excavation and related civil works for vwhich MWCI will take full responsibility, inclusive of restoring the site to Rs original condition, and, In recognition of the impact of this project in reducing the pollution load to the Laguna Lake, as well as the accompanying benefits to the community, 1, the undersigned, on behalf of the Barangay Council, hereby give my support and favorable endorsement for the irnprovement of the sewerage system of phase(s) of Karangalan Village covered by Barangay Manggahan, Pasig City. Respectfiilly yours, (RIS S.C C Z Ba ngay Chl af tMan gahan. Pasig City RE2UBL.IC o0 TIIE 1HIIIPPINES BARANGAY DELA PAZ COUNCIL CITY OF PASIG 24 August 2000 TO WHOM IT MAY CONCERN: CRESENTA S. VICTORIANO Hirgy.Chairwoman I Wlh the privatizatlon of MWSS, Manila Water Company, Inc. (MWCI) was given the right to exclusively provide water and sewerage services to the Eastern part of Metro Manila. In line with Its service obligations, the MWCI has elected to upgrade the sewerage system of Karangalan Village. SULPICIO M. PADUAL };agawad , WHEREAS, the sewerage system in Karangalan Village requires repair and rehabillatlon due to desin considerations and degradaton caused | by natural deterioratbn; MANUEL A. FLORES Iagawa4 VIWHEREAS, the presert conditlon of santatlon in the area may present hazards to the health of the residerts of the comrmunty; KRARwad WHEREAS, the existing sewer treatment facl0ty needs to be upgraded so that the wastewater effluert wil meet environmental standards; DEOGRACIAS R, VELUZ WHEREAS, the MWCI comnits to upgrade the sewerage system and KagawA d improve the sewer treatment facility of Karangalan Villag e, and, In recognition of the Impact of this project In reducing the polltion load to ARSENIO N. TANCHULIN i the Laguna Lake, as weD as the accompanyi benefits to the ]aLuwad communty, 1, the underslgned, on behalf of the Barangay Council, hereby give myy support and favorable endorsemert for the knprovement of the sewerage system of phase(s) of Karangalan Vdlage covered by FABIO J. ENRIOUEZ Barangay de la Paz, Pasig City. kagnawad l a Respectfully you's, PONCIANO U CALAYAG Kagawad lA.c 5D CRESENTA S. VICTORIANO Barangay Chairwoman PAUL ARIS A. ANGULUAN SK Chairman ZENAIDA T. SANTOS Brgy. Secretary HELEN T. LACSON llrgy. Treaaure-rj Repilhfic ot the Philippines Prnvince of Rizal \l uinicipa;liti nl C:iinta [I3AIRANC;AY SAN ISlI)DR) (A)_ OFFICE OFT 1l1 PUNONG( BARANGAY _o i . .r..-_j. .. J5)fil: A (; TVI-il:lHi 7 Au gu- 29, 2000 fii. SiX-, T0TI TN1 0 ROD)(O)l.H) DE. -:St's Dire^tcr, DDNR NCR iKa';"';iJ Quezon City ERNESTO C. l)EIA ROSA Dear Sir: With the privatization of MWSS, Manila Wiater Company, Inc. (IwCI) was given the right to exclu- sively provide water and seweraze services to the ROOIBERTO C. SANrOs Eastern part of Metro Manila. In line with its Kaaiwad sevice obligations, the MWCI has elected to upgrade the sewetage system of Karangalan Village. FELINO 1I. SANI'OS Whereas, the sewerage system in KaranEalan Vil- lage requires repair and rehavilitation due to de- sign considerations and degration caused by natural deteriorAntion; III'iRIFICACION J. FI):.A l'AZ Kaga.\3;l ~'hereas, the present condition of sanitation in the area may present hazards to the health of the residents.of the community; IIFROSIT() 1'. FERIN Kzi~a-,%ad Whereas, existing sewer treatment facility needs to be upgraded so that the watewater effluent will meet environmental standards; ANTON IO S. CRU/. Whereas, the PlaCl commits to upgrade the sewerage anu improve the sewer treatment facility of Karangalan Village, and, ROSEMARlII:E . SANI'OS Raratn,wvT,easurer In recognition of the impact of this project in reducing the Dollution load to the Laguna Lake, as well as the accompanying benefits to the community, I, the undersigned, on behalf of the Barangay Council, EIRNESO Q..JAIME.SP. hereby give my support and favorable endorsement for Bari-,-iv;Seccictar the improvement of the sewerage system of phase (s) of Karangalan Village covered by Barangay San Isidro, C-inta, Rlzal. Re 1 1 g rs, ANNEX 7 ANNEX 7. MEMORANDUM OF AGREEMENT (MOA) MWSS AND THE NATIONAL HOUSING AUTHORITY \1 IKORAflDUl1 OF AOREEIZEIMT KI CAJ) Ail '!'-:. MiESHC PRESE1TS: 'Th wj'radeIE e'.ode wnd enLe:ed :;rO ti-i: _ _ J z ty nd bL)e L .J' I T' he NJATIONIAL IlOIJSIIG AUTHORITY h , 0 govepz.e:en: corporatL Iol creeted &nd C. e: ing undel onid by virtue or Preuident.iel Decree Ilo.757 with prIncipsI olfle~e esddrete at; D linen. Quezon Ci t,'. reprecen,ied hercein by Ite General i1R. ROBERtT P. PALAO herelnefter- . referred to ae the IIHIA. -and- TIhe IIETROPOLITAN WATEIIWORKS AiJD SEWERAGE SYSTEM, likewlae a governinent corp..r&tlon created snd exNitanl by 'virtue of Republic Act 6231, ee a.mended, wlth principal office addreee at Balara, i9 Dillmon. Quezon City, repreaented hereln by itC Adrni.iintratoi tIR. RUBEN A. IIERNAtNDEZZ hereinafter ruferred to ae the -Witneseeth that- WH - Iil E, illiA thlrouglh thr-e prtlc 11ti.n of ill a.;; i dectOva d h,e develolped Ktatigutsion Vilage PvoJeot. sa the }itl>s Public F.lce3 bnd ServvlCdea ('POlnent Idenir icki n tilde Tlilrdi Urbaxn DevevloPment- PIroect; WIIETREAS, ItMSS,. under 1.hu Loan A31) t eenL tnmd the allbaldlazry Loonl Aareennetr exeeuted by enJ be.twee) the Government of the Reputblic of the Phillprnloe,o ind World Benk on .3une 2,1 98O woo n.inLactc t ro rtL Ic) Ipte ro, ;enaure abdl..tntaC fine%ncinid, ao1iil'nlatLEtion , opeve,tLlon an(d ina iftInaanc.t Of Lled we Lter - wd.I dCw-'I n'-o3teumd.3, or the pl oject.; IW1IUhLAS. MIA, atter comnpletlon of cjhe pro1ect. i n;r,nclated to Lti over/tvtnafer the *e: eE r and newer myatemfn III ftivor of 1IIUSS ptvouinart to-, lh - elatIng Ilw3, < x~~vtteij 6n.l reatiPLltnz)3; C:, WHIHERE:AS. I;WSS 1 L) Irillintedl by Lecter tf Intent : o, lRI. -101 to upeLste 311d inl8aII) c I he a torenaId A ] u; faciCii eIL 'ommm1On>elln tzJ nd Iote amabject or th10 - 'v =I;OW. THEREFORE. for tnlit In coneal de,atlon of che ; foregoing pr eineu, the el.ove PAI- clea do heel:.y Iincd lt.heilmeelvas mind odm'ee to the following termn eiIl ° oncl It ri c.hc,: O / - o 'JeE 1' AH'TICI.E I Co SC.OPJE_FJI1,RmEEU \ h1e, p:rtlen: lhereto ogree tht C thin He&orancdum of - Agreement, covero n project of com'lete rehabilittstion of ninle (9) eawtge litf atatlono ac ai-amngalnn Vtilo ae / amoint inl to Three M1111ion Six Hundred Four Thoutand One \ Hlunred El glity 11 ne Ptesoe and Twen:y-Nint- Centavon (P3,60-1,189.29) whIch lncludeo repaIr of aervice : entrano,zs motor controln. other releated electrical . works . Ileplacnnent of eigliteen ( !6) pumpa na well on otler acceeeoriee and labor coot. ARTICLE II RQLAD_RES PnjHaIjLL3ELr7EJi2s nE TIS ART_U Section 1? RESPONSIfTLITIES OF NIllA a. Entruat the amount of Three Million Six Hundred Fout Thout3and One ihindred Eighty Iille PeisoB And Twenty Illne Centavoe >; (P3,604,189.29) to IIfWSS for the tpecific ,rpurpoee of utilizins the Flve llundred _? Th I1h rty Foui ThoLitiegnd EIgh t Hundred i; ); ' Eleven Pecos and Twenity Nine Centtvos (f53'12 11.211) for the electlIetal worka Lnd Three M1illion Sixty Illne Thoueand Three Hundred Seventy Eight Peaos (P3.069.378.00) for the replacement of e ighteen (18) eubineraible pumpe end c O other acceooriets. b. DitsbLIurte thei imount of Po36041,189.29 to 1--IWSS in one I ) P1)ayment upon iainina of rtie Memora,ndum of Aareeun,nt &nd/or iihiatever riemalintnd coot h nreur'red toe .j perltiolbl Ize the teyacen y C. PvOinedte. Lthe rictl roultionLa ofla M Conito^ the th etincl al worlto o,f(i HeLCO we aCrbmeate alt ic mr.p3 oilt oitter zie foriete Ilc:ueLlOb! Y t.,: c:6111"16.e.= El-,: I"Al!Jllrlatitoll C, f II i fit: ( 9) ! ewa ge l ifL c i Lta l. i o in toi o per tla I le a the LeewEng OiiIe di eponLii. d. k7oriinate Lthe porticiputlold of MERALCO InI 1 le I natt,1 lt ionl C.f HE'HI.H\CO power - . .'. ~~~~~~~~~~~~~~~Cr'aarc (I d aposol C::ollill) It L C fol- th6 [-~~~~~~~~~~~~~~~~~~1" I; r. I nrill , air z e l ilg ,ofil;el(I cwwl kI a ,-,Otj It Lol q 0, ...z. of :aLe unc IIt,lo to~ 1 b II I) I e d - 0ut ln -. . ,71 .... tile pirojcet, akibject to COA rulea and -. - ,iver , f r Tronofer the OeWar a:,'dtemn of th, / o a .a ran s glan Villape plro.ec to tlWSS after completion of worit. t SECTION LI i'_S,OISIimILIvrES OF [¶WSS aD ) Purchoae materiaIl and undertake rehabilitation of electrical works and Ireplnceinent of eighteenLi-8) submersible pumpo and other acceasorlen to operatlonalIze the aewerage nyatern In a3ccordance withi MiSS 9tancdards. ,. . 1 l, Act an worka englneer for thc -C! 4 ) completion of the rehabIlitation of nine -9) bewage lift Btn:1one and aeweroge o ye tern. c. Undertalie and conmlete rh&abIllta tlon 0 C worke within aixty (60) calendar daye u-pon av'aliabillty of purchnaed materlals iancl to Bubmit actual work accompllehment on a weekcly bama as certified by the 5accountable HWSS officiale. >u ti. 1Ianage the awarding snd implementation of the contract In 6ccordance with U .A+\ e axlsting lawa, ruleo and regulations. .e Commence the implementatloni of the' worico uiponl rece Pt P In flill oC the fnlld e mNg) sentIoned in parag3rnp)h a, Section 1 of 9 R o t.this 'Article ftom IIIA. 2 f. iCoordinate with IIIIA xerrtaentncive/s :' throulghout the irnipen;entat I o of the /*ss rehi, iii F btalt5Oi} onwontl' nd Li t-IIurn oVelvr a ___ LIhe replac ed oubmere>Ible pumps and acceavories to the I itIonal louning Author Ity. Li. 5ubIllt ,finai accounting of the entrtuted ° furWI,tnd ad colt It I cd ; o,rreft by I1WiSS t-tnaigelltell t ... :-'WSS Manager. > X ~ ~ ~ ~ ~~~~Acu A_>t I t1n L'e partmbleiif . 1t and diii vtrvtiled bs IMISS Covrpcivte Auiditor. ' 7\ Tni COdtI t-he perIodI of eIC"t I 60) : ) endeorlal dn,ye Ic not r nl f Iclet. 10 *:c,inplet e tlie2 lsehatbI IItat Ion1 woi;kef fors whatever reacon, a thirty (3()-diay e:e t.e j I e .ni uIi , 1 l b tItOmt I C l 1 ) ' dranted :t *;, HsIiS t ......... :,i~ (ole il;c *Iz- dOinC . I f IIWSS g < ' st~~~~~~ill) tul in o co;IipietC thl. wclg'iIC with in) {: _ 2 the caicI t.line xenXtCI n1. r.he IMSS ls f _ obi _ged to - r5t;11t ,i. te,urn thle remna In I n fuLnd tci MIIA wIthin thirty (30) czal nIer daya tw1tholit t,ny lteve rcat chIr ge. 0 vt', zC 1. er't the sewel ce. Ie, ;- C he rrc.IoIII :-pon Comipletlo,n of wO'rke,.whic:h le tc. ;e form6liz,cI In la PEED OIF TRANS'FJRE. ATI'l CLE III Eif lALTh u_tLl2 Th)j1. I-leinut anuitin of Agireeiment shal t.ake effect upon aligning hereof co C ln Tail1 Colntinle Iii tu11 foroe and effect until completion) of the pro?ect. clbec! ves me n t l o n e lie her1in. S'ame 1ma ybe lo'dt e-I r e pele. Ealtred tl o01 ex tel)ded on1 y' by InUt.u wV I t.tnrll eement. ,f .o t. part.le 3. If for any reeo-on, aniy provislon of thia agreement. in t~foutndL invall:i, contrtry to law or pulbi z poliIcy, or beyond -tha c-ope of aC%uthorlty of thle aignl:ries herein, the remal nder, hlereof not. ftffeote.: Oo I ll Intitle 1n force andci effect. I ll WITNESS 'fllFREOF, thlie part tleo Iave hereunto affix:eh thelr algnatilvea t.hiX _ (a dy r -_ 1994 1t D f)Jllman, Otuezoni Cl y. NATIONAl. HOUSING AUTHORITl'Y IETrr{O[POLI TAN WATEFWORKiS AtND SET FAGE 5YSTEtI r)~~I - a3 *I oa, llltoil(t) DA L3AOS [Ru I A . 1113PIAlND)lZ 'I-,~~~~~~~~~''l *Ie,,J tL L-10ift.11c,- >8fi;il1>y I p PPIiROVJ EIS ': 5T' ;J!I : l')F TH: IIE RCIIA,r U1,1I1I'It A. 111'11:1NAND1)U 0,7 -7 AG\yJELEIXTLE ENT \\URT OFI-:)B.( [ TIIElll- 1ILIPPMiES) QUEZOI! CITY ) .5. Peforoa me, ui llotary Public fotr end in Cuezon City 'r- pereonaLly nppenre(l: - o ° I(SOBM:r 1). YIALAO RtJl3E:1 A. I1ERlHANlDEU General H-Ionagel' Admilnltr5tor I-' W eilIatiGc,n8l AloLiving Aithorltv Hletrnpol 'tan '.aterwo-crha and Sewer-age Syttcm A I => Conmi. To:-: Cert. Uln. 3582131 Coomm.Tax Cert.1.1c,. 3' 7579 A |SD l.etrlied AL; Quezoir CIty Iticued nt Qhiezon CliI:i' v onued on Feb. ''3, 1 991 leaiued on 11y.3-0, 199.1 .AlI isnown to ine aicd r.n mO known to he the: eame pernono who exectited the foregoing Inatrtuinrent allnd a ockn owIe g ed to me t01w% the came ln hileI t f Iree an1( voluntary CL t and deedt o we ll no the el) r 1 t eto they Se!Jpect lve II, eprecsent, T'm foregolnu Inzitrrnmert veiera to 8 Ilemnrandum of Agreement. c alaulna eting of Live (5_ pagea. lncludliiLn cilia -; rJ p)aeR On whiCh the l citnow Iedment Id ar iten, aignect by che prtA tea aend tche Ir Inartxiriente I w I tnlceee ancid aeo I( -by mly not eeral aeii. -r W \' I WIESS I/ IIHAMD AdID SEAL, thin - __ dlay of o . _____________________ , 199-1I, L Ot io::on Clity. -.' OITIAR1Y P1Jl.LIC( C)tP 3 I Irlcr i ,1 ;;) ~~~~~~~~~lne r l eb or 1 9 .| _______:!;_ '- .^ l r. P lccl [IC,. ~~ hook (Ia. 2 ~~~~~~~~~ ' "' "'- " ~~jv. ~ Seriecof 19r,"!' i T (D~~~~~~~~~~~~~~~~~~I I-.Rs _. 1) _ . Ci . . ACCOUNTABILITY STATEMENT OF THE PROJECT PROPONENT This is to certify that all the information in the enclosed Initial Environmental Examination (IEE) are true, accurate, and complete. Should we learn of any information which would make the enclosed IEE inaccurate, we shall bring the said information to the attention of the Environmental Management Bureau (EMB) of the appropriate DENR Regional Office and the Environmental Department of World Bank. VWe hereby bind ourselves jointly and in so!hdarity with the preparers for any penalties that may be imposed arising from anv misinterpretations or failure to state material information in the enclosed IEE. In witness whereof, we hereby set our hands this 21st day of December 2001 at Quezon City. Manila Water Company Project Proponent by: Antonino Aquino President SUBSCRIBED AND SWORN to before me this 21St day of December 2001, affiant exhibiting to me his Community Tax Certificate No. 05959688 issued on January 12, 2001 at Quezon City. Notary Public Doc. No. ' a. Page No. Book No. ....~., Series of 2001 ,4 AeC ,-83-i/r