environmental sanitation clearance

7/25/2019 Environmental Sanitation Clearance

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4,000 cubic meter capacity Sewerage Treatment Plant

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Basic Project Information

Name of the Project : Proposed 2,000 cubic meters per dayCapacity Sewerage Treatment Plant

Location : Magay St., R.T. Lim Boulevard,Zamboanga City

Nature of Project : Wastewater Management Project

Proponent Profile

Proponent Name Zamboanga City Water District

Address Pilar St., Zamboanga City

AuthorizedSignatory/Representativeto Apply for ECS

Leonardo Rey D. VasquezGeneral Manager

Represented by :Arnulfo A. AlfonsoAssistant General Manager for TechnicalServices

Contact Details Tel No. : 991-1556Field Office (Engineering) : 955-4235Fax No. : 991-2799

2.0 Site Information

The proposed project site was chosen based on location,

possibility of land availability, land area, and elevation with

respect to flood level.

The existing site of the Materials Recovery Facility (MRF)

owned by the Local Government of Zamboanga City is located 300

meters away from the West Pumping Station. The project will

utilize 1,800 square meters of the area for the construction of

the 4,000 cubic meter capacity Sewerage Treatment Plant.

Last April 22, 2014, a Memorandum of Agreement has been

signed by the Local Government of Zamboanga, represented by the

City Mayor, Maria Isabelle Climaco-Salazar, and the Zamboanga

Ciy Water District, represented by its General Manager, Leonardo


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Rey D. Vasquez, for the use of the said area. This was witnessed

by members of the Board of Directors of ZCWD and the department

heads and key personnel of the local government.

The project site is bounded on North by Gov. Lim Avenue

(Magay Street), on the East by a Mosque and the open space

nearing the Zamboanga City Public Market, on the south by the

Magay Creek along the Philippine Ports Authority, on the West by

the MRF. Along the North side, there are found certain

structures made of light materials but which are no longer part

of the bounded area.

2.0 Project Rationale/Objective

The provision of effective sanitation services is a key

development challenge in the Philippines. As the population

rises and is increasingly concentrated in urban centers, there

is corresponding increase in wastewater generation. Under the

Clean Water Act, water utilities in highly urbanized areas, in

coordination with local government units (LGUs), are required to

connect existing sewage lines to available sewerage systems. In

areas where there are no sewerage systems, water utilities may

adopt a sanitation improvement program that will regularly

remove septage to increase the performance of septic tanks.

Within the ZCWD franchise area, only a very small

percentage of households are connected to the existing

sewerage system. The existing system however lacks the

necessary treatment facility to treat raw sewage. Most houses

that are not connected to the existing system use septic tanks

which only provide partial treatment of sewage. The lack of

maintenance of septic tanks renders the partial treatment

useless as it makes the septage or the contents of the septic

tank more pollutive when directly discharged to drainage canals

and eventually to bodies of water. This is also the case forsewerage systems without wastewater treatment facilities.

2.1 Objectives

The operational objectives of the project are:


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1. To provide a Sewage Treatment Plant (STP) for the

existing ZCWD sewer network that will reduce pollution

attributed to untreated sewage discharge or overflow from

households;

2. To rehabilitate the existing sewer network including

the expansion of the sewerage coverage area;

3. To provide efficient and affordable sewerage service

initially to existing ZCWD sewered customers and

ultimately to all targeted areas within the franchise of

ZCWD;

4. To comply to all existing local and national

environmental laws and regulations on effluent and sludge

disposal by construction and operation of efficient

treatment plants and sludge disposal facility; and

5. To improve water quality, sanitation and public health

conditions to enhance economic productivity and potentials

in fishery, aquatic life and eco-tourism in the general

areas of Zamboanga City and adjoining municipalities.

3.0 Project Type and Area Covered

This project will cover the existing collection system

which covers approximately 80 hectares of the downtown area

including the following barangays: Zone I, II, portion of Zone

III and Zone IV.

The general project scheme will take on the following

components:

Phase I (Year 2010-2015)

Construction of STP at MRF Site with 2015 design sewageflow

Construction of interconnection works from West Pumping

Station to STP at MRF

Phase II (Year 2015-2020)

Sewer network investigation and rehabilitation works


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Rehabilitation of East and West Pumping Stations and

discharge lines

Expansion of Sewerage System utilizing separate system of

sewage collection (pipe laying, interconnection, and

service connection works)

Expansion of STP to accommodate flows from expansion area

(2020 design sewage flow)

4.0 Operational Process

Sewer System

The sanitary system dates back to year 1933 when it

was constructed during the American occupation. It covers

an area of approximately 80 hectares covering most of thecitys downtown area. The collection system consists of

approximately 11,400 l.m. of vitrified clay pipes with

lengths and sizes broken down as follows: 830 l.m. of 100

mm diameter, 5,390 l.m. of 150 mm, 4,960 l.m. of 250 mm,

and 220 l.m. of 300 mm. Excluded are private lines of large

establishments connected into the system. Figure 3-4 shows

the existing layout plan of the sewerage system. The Magay

Creek (Sucabon Creek) divides the sewer service area into

the East and West catchment areas. Sewage flow from the

East catchment are conveyed by gravity to the East PumpingStation, which are then pumped to the West Pumping Station

via two 200 mm diameter cast iron (CI) pressure pipes.

Likewise, sewage flows generated from the West catchment

are collected in the receiving tanks of the West Pumping

Station where together with the flows from the East

catchment are no currently being discharged into Magay

Creek.

5.0 Plans and Specifications

This project will be undertaken under a Design and Build

Scheme. Thus, the detailed plans and specifications of this

project cannot yet be presented.

However, a the preliminary design of the sewerage treatment

plant is presented as follows:


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5.1 Treatment Options

(1) Sewage Characteristics and Effluent Limits

The sewage treatment plant (STP) should be able

to produce an effluent that meets all the required

discharge standards, must be cost-efficient with

minimal operational and maintenance requirements

and must be robust enough to accept varying organic

and hydraulic loads. Varying and fluctuating

wastewater characteristics are highly expected

during STP operations. Low organic content of

sewage (i.e. BOD < 70 mg/l) is susceptible to

endogenous respiration in the aeration tank for

biological treatment system. Such condition will

result to thinning of bio-sludge in the reactor and

formation of sludge with poor ability to settle. In

addition to appropriate STP design, good operation

and process control will be the key in meeting the

compliance limit all the time.

The proposed sewage flow characteristics are

presented with range values and are shown in the

Table 5.1. The one-time sampling conducted in March

2009 yielded a BOD of 98 mg/l. This is relativelylow compared to average sewage characteristics.

Since this is a one-time sampling event, the design

parameters for the STP will be referred to reported

literature values. The effluent standards of Class

C water as stipulated in DAO 35 should be used as

the treatment objective criteria for the proposed

STP.

The specific water quality parameters that must

be complied with are listed in Table 5.2.


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Table 5.1 Design Criteria for ZCWD-STP

Table 5.2 Effluent Standards: Conventional and Other

Pollutants Inland Waters Class C

Parameter Units Effluent LimitsColor PCU 150pH 6.5-9.0

COD mg/L 100

BOD5

@ 20 mg/L 50

Total Suspended Solids mg/L 70Oil and Grease mg/L 5

Phenolic substances mg/L 0.10Total Coliforms MPN/100 ml 10,000

source: DENR Administrative Order No. 35 s. 1995

(2) Preliminary Treatment Units

Preliminary treatment units, the first stage of

sewage treatment, must be able to efficiently remove

coarse solids and other large materials often found insewage to protect downstream equipment such as

transfer and sludge pumps and mechanical scrapers.

Preliminary (or pre-treatment) operations typically

include flow equalization, oil and grease removal,

coarse to fine screening, grit removal and, in some

cases, macerating or grinding of large suspended

solids. A number of pre-treatment units are

recommended for the sewage treatment plants. These are

the following:

Screening - Coarse screening of solids with particle

diameter of 6 to 150 mm may be accomplished using bar

racks or bar screens (mechanically cleaned). Inert

materials less than 6 mm in diameter may be removed by

fine screens (fixed parabolic type or rotary drum).

Inclined bar screens are frequently applied atSTPs,


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pumping stations and polder pumps. It may be a

continuous self-cleaning screening belt that removes

fine and coarse solids with mesh width of screen in

the range of 0.5 to 30 mm.

Removal of Grits - This is accomplished after

screening and before flow equalization in order to

protect mechanical equipment from abrasion and

accelerated wear. Grit removal will separate sand,

gravel or any other heavy non-putrescible materials

from the sewage. This may be accomplished in grit

removal chambers or by centrifugal separations of

solids.

Flow Equalization - This pre-treatment unit is often

required for separate systems whether operating on

dry- or wet- weather flow. This is often accomplishedby using equalization basin properly designed based on

peak and minimum diurnal flow patterns providing an

average of 2 hours detention for the design flow.

(3) Main Treatment Units

The main treatment may either involve chemical

treatment or biological treatment. In some cases, the

enhanced chemical precipitation process using either

plate clarifiers or diffused/dissolved air flotationmay be considered as an alternative to biological

treatment units especially for combined sewer flows.

The process is usually attractive to sewage flow with

low organic loads but relatively high inert or non-

biodegradable suspended solids. However, the process

will entail large chemical consumption and

subsequently will produce considerable volume of

sludge which will need further processing, treatment

and disposal. Organic removal using biological

treatment process is recommended for this project.Four (4) biological treatment systems were evaluated

using a technology selection criteria developed for

MWCI in Metro Manila (MTSP Feasibility Study in 2003).

These selection criteria are as follows:


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Table 5.3 Comparative Advantages and Disadvantages of

Selected Biological Treatment Systems


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(4) Sludge Handling and Other Post Treatments

Sludge treatment and disposal is a major

consideration in choosing the appropriate main

treatment technology. Sludges are mainly due to the

production of excess sludges during the biological

treatment process. To prevent nuisance due to odor,

these sludges must be stabilized, dewatered and

disposed of properly in landfill as soon as possible.

Sludges may be stabilized and later used as soil

conditioners or fertilizers. Available separation

technologies considered are presented in Table 5.4.

Chlorine disinfection is often used for STP system.

Other options currently used are ultraviolet (UV)

radiation, ozonation, chlorine dioxide, peracetic acid

and electron beam irradiation (E-beam).

Table 5.4 Comparative Advantages and Disadvantages of Bio-

Sludge Handling Equipment


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Fig. 5.1 Sample STP Site Layout as recommended by Philippine Water Revolving Fund


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6.0 Description of Existing Environment

Topography and Geology

The study area is situated on a coastal plain covering

stretches of generally flat terrain with elevations ranging from

zero to 50 meters above mean sea level (mamsl). In general, the

profile is sloping from the shoreline before gradually becoming

rolling and mountainous toward the center of the peninsula. The

urban center of the study area is situated in a relatively flat

terrain located near the shoreline with elevations reaching only

up to 5 mamsl.

The coastal plains of the Zamboanga Peninsula are covered

by recent alluvium, raised coral reefs, and beach deposits. The

uplands on the other hand are made up of igneous and sedimentary

rocks of tertiary age, mainly andesitic, volcanic, limestones,

shales, and tuffs.

A large expanse of the study area is covered by lowland San

Miguel silt, characterized by a reddish brown color, friable,

and takes the form of a fine granular silt loam. This soil type

is mostly planted to rice, corn, and fruit trees.

The mountainous portions of the study area have soils which

are characterized by gray to dark gray which was formed from

residual soils underlain with coralline limestone. Drainage in

this soil type is good externally and varies from fair to poor

internally.

Hydrology

Zamboanga City has two pronounced seasons, the wet and dry.

The wet season begins in April and ends in November while therest of the year is dry with occasional rains. The mean annual

rainfall over the study area is 1,129 mm with an average

temperature of 27.2 C, December and January being the cold

months with temperature registers of 26 to 27 C1

1Zamboanga City Climatological Station, PAGASA (1950-1985)


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There are two major river systems that traverse the study

area. These are the Tumaga River and the Baliwasan River. The

Tumaga River drains the Pasonanca Reserve at the upstream

running southeast before exiting into the Moro Gulf. The

Baliwasan River on the other hand drains the eastern most

portion of the study area before finally discharging intothe

Basilan Strait. One of the major tributary which branched out

from the Tumaga River is Magay Creek. This creek drains the city

center of Zamboanga City, originating from Barangay Camino Nuevo

and discharging into Basilan Strait fronting the international

sea port.

7.0 Brief Discussion On Environmental And Health Impacts

One of the objectives of constructing this sewerage

treatment plant is to improve the water quality, sanitation and

public health conditions to enhance economic productivity and

potentials in fishery, aquatic life and eco-tourism in the

general areas of Zamboanga City and adjoining municipalities.

The World Health Organization (WHO) has classified diseases

related to water into four categories:

1)water-borne diseases e.g., cholera, hepatitis A,typhoid,

diarrhea and dysentery;2)water-washed diseases e.g., diarrhea, intestinal

parasitism, conjunctivitis (sore eyes), and skin diseases;

3)water-based diseases e.g., schistosomiasis; and

4)water-vector related diseases e.g., malaria, filariasis and

dengue or H-fever.

The discharge of untreated wastewater into the coastal

waters poses detrimental effects not only to the water body and

its biodiversity but also to the aquatic resources that are

eventually consumed by the people of Zamboanga.

Thus, it is anticipated that upon the operation of this

sewerage treatment plant, there will be gradual but considerable

improvements in the water quality of the receiving body. The

limited pollution load of the effluent discharged into the

creek, which are within or even lower than the standards set by


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DENR, would allow the natural assimilation of these pollutants

by the water body.

Possible environmental impacts that are expected in the

operation of the STP include the following:

Odour and air pollution from the plant and from the

disposal of effluents and sludge;

Infiltration of sewage into topsoil, aquifer, or water

supply and impact of water supply;

Mosquito breeding and diseases transmitted by

mosquitos;

Solid waste disposal of sludge and other wastes;

Tourist and recreation areas such as nature reserves,

forests, parks, monuments, sport centers, beaches, and

other open areas which would be impacted;

Possible emergencies and plant failures, the frequency

at which they may occur, and possible consequences of

such emergencies.

In order to mitigate these impacts, the winning bidder or

contractor would be required to incorporate measures that would

control odor and install air emission control equipment to

mitigate the impacts on air.

There is a slim chance of infiltration of sewage into the

water supply since there is a sanitary clearance that is being

observed against the water system. Futhermore, the water sources

are located upstream of the location of the sewerage system and

the proposed STP. However, regular maintenance checks are being

performed to mitigate infiltration of sewage into the ground

water. The Phase II of this project involves the replacement of

of the old sewer lines where the structural integrity of such

pipes are already in question considering the age of said pipes.

To avoid mosquito breeding within the STP from tanks, most

of said tanks will be constructed sub-surface and will be

enclosed. The aeration process of the said tanks will not be

conducive for mosquito breeding because of its continuous

disturbance and agitation.


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The present case where raw sewage is directly discharged

30-40 meters from the West Pumping Station could have

contributed to the degrading water quality of the Cawa-Cawa Bay.

Despite such fact, tourism has not dwindled, but had rather

increased the number of beach goers. However, with the advent of

the STP operation, it could be expected that the water quality

of the beach would gradually improve with its continuous

operation.

8.0 Brief Discussion on Mitigating/Control Measures

The following mitigating measures will be implemented in

the event that the following circumstances may arise during the

operation of the STP:

Treatment Plant Failure

Standby generators should be provided in order to

provide immediately the power requirements should there be

power failure. Chlorination of the effluent could also be

increased during these periods to reduce pathogenic

bacteria in the effluent.

It will be ensured that all plant equipment must at

all times be in good operating condition. Trainingprogrammes and for plant operation and maintenance

activities will be included as part of the project's

technical assistance program. Funds will be allotted to

make available new equipment parts and training after the

project's contractors have completed their obligations.

Outfall Location and Design

The location of the effluent outfall is be so located

as to ensure the maximum dilution of the effluent in theMagay Creek.

However, the discharge of effluent will not be

regularly determined as water reclamation will be an option

in the operation of the STP which will also be open for use

by the City Environment and Natural Resources Office, the


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City General Services Office and the Philippine Ports

Authority for their general purposes use.

Plant Odour, Mosquito And Other Nuisance

Odours from the plant are expected to be reduced from

existing levels and not pose a major problem due to the

location of the project site and the south-westerly wind

which would carry most of the odour to the sea.

Fly and mosquito breeding can be controlled in ponds

and the sludge drying lagoons by chemical application (i.e.

calcium hypochlorite, chlorine).

Noise from the plant is expected to be minimal, and

the location of the plant and wind direction will reduce

this adverse impact. Adverse impacts of heavy traffic to

and from the plant of local street traffic and noise is

expected to be minimal during plant operations.

Other control and mitigating measures which will be

implemented during the construction and operation phases of this

project will be discussed under the section on

Mitigating/Control Measures.

9.0 Occupational and Safety Measures

Since the project will be using the Design and Build

Scheme, the contractor will be required to observe the following

occupational and safety measures, among others. They shall

provide sufficient number of the following items to ensure the

safety and welfare of their employees, its subcontractors, the

Engineer and its agents and the public during the execution of

the work.

1.PPE

2.Signages

3.Barricades or bollards

4.Warning Lights

5.Steel plates for open excavation

6.Board-up fence


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7.Access ladder

8.Sheeting and shoring for excavation

9.Safety engineer and traffic aides

10. Other safety equipment necessary to execute the work

in a safe manner

11.

All other items that are required by the DPWH, City

Engineers Office and/or LGU for the safe execution of the

Work

During plant operations, the following safety measures will be

implemented on the following phases/aspects of the operation:

9.1 Safety

ZCWD, as the end user, shall be responsible in

ensuring the safety of its employees and guests by

providing a safe working environment. It shall ensure that

prior to the operation of the Sewerage Treatment Plant, its

employees shall have completed a safety training. Monthly

safety meetings, and regular safety trainings, will be

conducted to update the existing safety plans. All

employees will undergo CPR and Basic First Aid Training.

The STP Supervisor will maintain a record of all

training provided. He shall also be responsible forinsuring that all plant plans and programs are reviewed on

an annual basis.

9.2 Peak Flows

The STP personnel shall determine peak flows and when

influent wet wells high level alarm is activated. In such

cases, the Supervisor shall be alerted and the latter shall

assign an Operator who will monitor the plant during the

peak flow event.

Operators will check the condition of the bar screens

and watch for hydraulic over loading of treatment processes

for the duration of the event. The STP will be monitored 24

hours a day for as long as the peak conditions exist.


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9.2.1 Responding to Peak Flows

ResponsiblePersonnel

Action

Operator - receives an alarm forinfluent high level

-

acknowledges the alarm andchecks plant flow

- - notifies Supervisor ofthe alarm condition

Supervisor - Checks current weatherconditions and predictedrainfall

- Schedules Operators tomonitor the plant duringthe event.

Scheduled

Operator

- Monitors flow through the

treatment process- Checks for influent flow inexcess of pump capacity

- Monitors chlorinationprocess to insure properfunction

- Manually rakes screens whennecessary

- Checks grit classifier forcontinuous operation

- Checks sewer levels at key

manholes in the collectionsystem as may be directedby the Supervisor

- Log activities in theOperations Log Book

9.3 Sanitary Sewer Overflows

There is an overflow event when there is a release of

untreated sewage to the environment or inside of a building

not including permitted combined sewer overflow points. The

cause of the overflow includes:

Overtopping of manholes

Overflow of pump station wet wells

Force main pipeline breaks

Air release valve failures


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Sewer line blockages

Sewer line or main failures

Flow exceeding the capacity of the collection

system

These cases require immediate emergency responses

which include, but are not limited, to the following:

Division Manager to mobilize personnel to stop,

control, contain and clean up the spill.

Division Manager must notify the following

authorities:

o DPWH or City Engineers Office, as the case

may be;

o Department of Health, Center for Health

Development;o Department of Environment and Natural

Resources-Environmental Management Bureau

o Local Government of Zamboanga City

The STP manager must ensure that the contaminated area

is barricaded of and evaluates the event to eliminate

hazards, both current and future, to the public health and

environment.

It shall also undertake the following preventive

measures, to wit:

Establish a gravity sewer cleaning schedule;

Conduct video inspection of the collection

system;

Verify the capacity of the collection system and

of the plant with each new development;

Provide battery back up alarm system in both

pumping stations;

Redundant pump, valve and control system in all

pump stations;

Provide emergency power generation system at

plant and in all pumping stations

9.3.1 Responding to Sewer Overflows

Responsible Action


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Personnel

Plant Manager - Upon notification of anoverflow event, evaluatesthe resources needed tostop , contain or control

the event;- Assigns a response team tostop, contain and controlthe spill

- Mobilizes the personnelresponsible

- Reports the overflow eventto the proper authorities

Response Team - If the spill is in atraffic area, diverttraffic away from the spillwith barriers and/orflaggers;

- Contains the spills withsandbags or other barriers

- Blocks storm drains andother runoff points toprevent spill from reachingreceiving waters;

- If spill is on thepavement, hoses down thespill area thoroughly usingthe vacuum truck to pick upthe rinse water; or

- If spill is on bare ground,removes the contaminatedsoil;

- Returns the site conditionit was in before the spill.

- Completes other clean uptasks as may be directed bythe Department of Health,the supervisors and properauthorities.

-

Reports clean up measuresundertaken o the plantmanager.

ScheduledOperator

- Monitors flow through thetreatment process

- Checks for influent flow inexcess of pump capacity

- Monitors chlorination


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process to insure properfunction

- Manually rakes screens whennecessary

- Checks grit classifier for

continuous operation- Checks sewer levels at keymanholes in the collectionsystem as may be directedby the Supervisor

- Log activities in theOperations Log Book

9.3.2 Reporting a Sewer Overflow Event

The STP Manager, within five (5) days from the

occurrence of a sewer overflow event, will take thefollowing actions:

1.Receive a notification of the event;

2.Investigate the cause of the event;

3.Gathers data about the event including start

time, duration, estimated volume discharged,

area affected and point of entry intro

receiving waters;

4.Writes the detailed report on the event

including the steps taken to prevent

reoccurrence.

5.Submits the written report to the ZCWD

Management, DENR-EMB, DOH-CHD IX, and the

City Health Office.

The Supervisor shall:

1.Gather the necessary data including

surrounding the event including the start

time, duration, estimated volume and

affected area;

2.

Inform ZCWD Management, DENR-EMB IX, DOH-CHD

IX and the City Health Office to report the

incident and pass on information gathered.

3.Take photographs of the incident for

documentation purposes.


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4.Contacts the STP Manager to report the

incident and pass on information;

5.Writes the summary of the incident to be

submitted to the STP Manager;

9.4 Chemical Handling

As a measure of safety, personnel must at all times

wear protective gear including but not limited to safety

glass and gloves.

9.4.1 First Aid for Chemical Exposure

1.Eyes : Wash eyes thoroughly with water

for 15 minutes and

get medical

assistance

2.Skin : Flush skin with soap and water.

Get medical attention

3.Ingestion : Seek medical attention

immediately. Induce

vomiting if conscious.

4.Inhalation of spray or dust : Remove to

fresh air and get

immediate medicalattention.

These first aid measures shall be updated accordingly,

particularly as the type of chemical used for the STP will

be known.

When cleaning chemical spills, make sure that

appropriate protective gear and equipment are being worn.

For liquid spills, flush small spills into the wet well.

For larger spills, contain the spill and recover as much ofthe chemical as possible. Discharge the remaining liquid

directly into the wet well. Rinse the area and discharge

the wash water into the wet well.


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In case of solid spills, dispose appropriately into

the designated dumpster according to the nature of the

waste (biodegradable, non-biodegradable, hazardous, etc.).

9.5 Responding to Earthquake and Tsunami

When an earthquake strikes, employees are advised to

drop, cover and hold (drop and cover under a desk or

sturdy table). Windows, bookshelves, filing cabinets and

other objects that could fall should be avoided. Hold onto

the desk or table; if it moves, move with it. If outdoors,

move to a clear area, away from trees, signs, buildings or

downed electrical wires and poles.

After the earthquake, check yourself and those around

you for injuries. Be prepared for aftershocks. A severe

earthquake may necessitate the opening of an Emergency

Operation Center. The STP should take the following steps:

Responsible Personnel Action

STP Manager - Checks on the welfare of allplant personnel. Injuredpeople will be cared for as afirst priority.

- Goes to the Emergency ResponseCenter or sends his supervisor

or any representative of theSTP;

- Assigns operators toinvestigate for damagesstarting with the main plantand outfall, then pumpstations and force mains.

- Plan for work schedules tocover 24 hours/day until theemergency condition isdeclared and ended.

Plant Operator -

Conducts a plant walkthroughnoting equipment andstructural damage

- Reports his findings to thesupervisor

Laboratory Operator - Checks laboratory forequipment or structural damageand assist in the clean up of


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the laboratory following achemical hygiene plan

- Reports any damage to thesupervisor

Supervisors - Evaluate the damage reports

and plan for system operationaround problem areas.- Assigns remaining operators

into teams to check pumpstations and force mains forsigns of damage.

- Plans for equipment andmanpower needed to keep thesystem running.

- Reports damage and measuresneeded to be taken to the STPmanager

The likelihood of a Tsunami affecting the STP and the

West Pumping Station is not remote considering its

proximity to the Cawa-Cawa Bay. However, no records of

tsunami in the said area has been made in the history

because of its location and the presence of the Great and

Little Sta. Cruz Island fronting the bay, as well as the

other islands in the nearby area.

However, as a measure of disaster preparedness, the

following are the actions that will be taken in the eventof a tsunami:


Supervisor - Receives a tsunami warning- If the ETA is more than 1hour, assigns an operator tomonitor the West PumpingStation

- If the ETA is less than 1hour, move all vehicles andpersonnel to higher ground and

wait for an all clear sign- Monitor local news for all

clear or new tsunamiinformation and relay latestnews to the operators

- Contact local septage haulersto place them on standby inthe event of a possible pump


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out of pumping stations wouldbe needed

Pumping StationOperator

- Contacts the Philippine PortsAuthority and the nearbyresidents and informs them of

the warning and that thepumping station will not beable to pump waste until theclear sign is received.

- Pumps down the West PumpingStation and shuts off allpower to the station

- Prepares for the pump out ofthe West Pumping Station inthe event of its loss in thesurge

- Monitors the pumping stationfrom a high ground until givenan all clear sign.

Laboratory Operator - Checks laboratory forequipment or structural damageand assist in the clean up ofthe laboratory following achemical hygiene plan

- Reports any damage to thesupervisor

Supervisors - Evaluate the damage reportsand plan for system operationaround problem areas.

- Assigns remaining operatorsinto teams to check pumpstations and force mains forsigns of damage.



9.5.1 Post Tsunami Action

Since tsunamis often occur as a series,

activities will not be resumed until PAG-ASA has given the

all clear. If generated by a local earthquake, be


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prepared for an after shocks. The following earthquake

action plan:


Supervisor - Receives a tsunami warning All

Clear message; notifies allpersonnel;

- Assigns other personnel,septage haulers, etc. toassist if necessary

- Prepares a written report ofactions taken and damageencountered. If sewage hasescaped into the environmentinclude the report with theOverflow report

Pumping StationOperator

-

Inspects the West PumpingStation. Reports the problemssuch as flooding or power lossto supervisor.

- Prepares for the pump out ofany pump station in the eventof its loss in the surge.

STP Operator - Prepares for peak flowSupervisors - Evaluate the damage reports

and plan for system operationaround problem areas.

-

Assigns remaining operatorsinto teams to check pumpstations and force mains forsigns of damage.



9.6 Standard Operating Procedures for Escape Route

In the event of a fire alarm, personnel should follow

the escape route which will be strategically posted in the

building and should exit the building immediately.

Operators should take their cellular phones with them and


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have the Laboratory Operator call 117 for the fire

department.

All plant personnel will meet in the parking lot. A

head count will be taken to ensure that everyone has made

it out of the building safely.

After the fire department has completed extinguishing

the fire, the STP manager and/or supervisors will evaluate

the extent of the damage. A plan for operation of the plant

around the damaged area will be formulated on a case to

case basis.

9.7 STP Blood-borne Pathogen Site Specific Plan

9.7.1 Potential Hazards

There is a potential for exposures from needles

and other contaminated sharps which may be present in

the wastewater flow stream through primary treatment

or in the sludge flow stream.

The sewage flow stream through primary

treatment. This includes manholes, pump

stations, bar screens, and the primary

clarifiers. The sludge flow stream which includes the

primary sludge pumps, the thickened sludge

pumps, and the belt filter press, as the

case may be.

First Aid/CPR

All blood and other potentially infectious

materials is treated as if known to be

infectious with HIV and HBV.

9.7.2 Control Measures

If an employee comes into contact with blood or

other potentially infectious materials, they will

remove any personal protective equipment and

immediately, or as soon as possible, wash their hands

and other exposed areas with soap and warm running


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water in the restrooms at the STP. The incident will

immediately be reported to the supervisor who will

assist the employee to the nearest medical center if

immediate medical attention is necessary.

9.7.3 a. Sewage Flow Stream through Primary

Treatment

1.Manhole and Pump Stations

All employees will wear boots with

steel toes and steel shanks when entering

any portion of the collection system where

wastewater is present. If an employee has to

kneel down, they will wear appropriate knee

protection. Protective gloves will be worn

whenever an employee must put their hands

into the wastewater.

2.Plugged pumps

Any pump that is plugged will be

cleared as much as possible using mechanical

means. Employees will wear protective gloves

if they must reach into the pump with their

hands.

3.Bar Screens

For this project, bidders will be

required to propose bar screens that are

mechanically cleaned. However, if the

screens need to manually cleaned, such as

when the equipment backs down, it must use a

rake specifically designed for that barscreen. The screenings are raked onto a

platform, shoveled onto the screenings

conveyor or into a garbage can and then

dumped into the screenings dumpster.

4.Screening Dumpsters


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Employees must not place any part of

their body into the screenings dumpster

especially when all work is done using

mechanical means.

5.Primary clarifiers

No work is done in the primary

clarifiers unless they are completely pumped

out.

9.7.3 b. Sludge Flow Stream

When work is done on any equipment that is

part of the sludge flow stream (i.e. Primary

Sludge Pumps, Thickened Sludge Pumps, Belt Filter

Press and All Sludge Piping) all material will be

removed from pumps, piping, etc. using mechanical

means as much as possible. Employees will wear

protective gloves if they must reach into any

such equipment with their hands. After all the

sludge has been removed from the equipment it

will no longer be considered a potential hazard.

9.7.3 c. First Aid/CPR

Whenever CPR is given disposable gloves and

a mouth to mouth barrier will be used. Gloves and

eye protection will be worn for any first aid

that involves blood and/or body fluids. When

there is more than one victim employees will

change protective equipment (gloves, etc.)

between each person.

9.7.4 Personal Protective Equipment (PPE)

PPE will be removed immediately, or when

feasible, if penetrated by blood or other potentially

infectious material. All PPE will be inspected for

contamination or loss of integrity (holes, cracks,


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etc.) prior to use. Re-usable PPE will be

decontaminated using a 1:10 bleach solution (made

fresh) then inspected for structural defects.

Defective PPE will immediately be brought to the

Supervisor for repair or replacement. All employees

will remove contaminated PPE or other clothing

following safe removal techniques as shown in

training.

9.7.5 Cleaning Procedure for Blood and Other

Potentially

Infectious Material (OPIM)

Always wear gloves to clean up blood or OPIM. Use

a 1: 10 bleach solution (made fresh) to clean up all

potentially infectious material.

9.7.5 a. Small Area

1.Cover the contaminated area with disposable

paper towels and pour bleach solution over

the entire area.

2.Fold the papertowels into themselves and

discard into a red biohazard bag.

3.Cover the area with bleach solution and wipe

up with papertowels.

4.Place the papertowels into the red biohazard

bag then remove the gloves and place them

into the biohazard bag also.

9.7.5 b. Large Area

1.Fill a mop bucket with a 1:10 bleachsolution.

2.Carefully mop the area without spreading the

contaminated material.3.Allow the area to dry.4.Change the water in the mop bucket.5.Mop the entire area with new bleach

solution.6.Change the water and rinse the mop head in a

new bleach solution.


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7.Place the mop head in a red biohazard bagand send in for cleaning.

9.7.6 Waste Handling and Disposal

Do not fill any biohazard waste container tooverflowing. If the outside of the container is

contaminated, use gloves while handling it. Place

the contaminated container into another container

(double bag, etc.) to prevent spreading the

contamination.

9.7.6 a. Types of Contaminated Waste (notReusable Material)

1. Garbage

Bandaids, kleenex, papertowels, etc.that will not release any blood or OPIM(liquid, semi-liquid, or dried flakes) whencompressed. These items can be thrown intothe trash.

2. Regulated waste (material that goes in ared bag for disposal)

Liquid or semi-liquid blood or OPIM

Items contaminated with blood or OPIMwhich would release these substances ina liquid or semi-liquid state ifcompressed.

Items caked with dried blood or OPIMwhich are capable of releasing thesematerials during handling

Contaminated sharps

The actual volume of blood is not thedetermining factor as to whether or not

a particular material is to beconsidered regulated waste. Forexample, 10mL of blood on a disposablebed sheet would appear as a spot (notregulated waste) while the same amountof blood on a cotton ball would likelycause saturation and dripping(regulated waste).


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9.7.6 b. Waste Handling

1.Contaminated Sharps

All contaminated sharps will be placedin a sharps container using mechanicalmeans (pliers, tongs, etc.). The sharpscontainer will be marked as Used andproperly disposed of. The tongs, etc.,will be disposed of or cleaned using a1:10 bleach solution (made fresh).

2.Contaminated Laundry

Contaminated laundry (includinguniforms with employees blood on them)

will be placed in a separate red biohazardbag and disposed of accordingly (ifhazardous waste treater becomes availablelocally, the biohazard wastes will bepicked-up by them for proper disposal).

3.Regulated Waste

All regulated wastes (other thansharps) will be placed in a red biohazardbag.

9.7.6 c. Disposal

All bloodborne pathogen waste will beplaced in a biohazard container located inthe equipment bay. In the absence of ahazardous waste treater, the contractor mustbe able to provide the STP with acontainment for hazardous waste. It must beconstructed in a manner that will preventcontamination of soil and ground water.

All wastes must be in proper leak andspill proof containers ( double bagged inbiohazards red bags, sharps containers,etc.) prior to disposal.

9.7.6 d Training


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All STP employees with occupational exposurewill receive annual bloodborne pathogen trainingprovided by the City Health Office. The STP willalso give site-specific training to all employeeson an annual basis. All new employees will begiven bloodborne pathogen orientation trainingand be offered the Hepatitis B Vaccination within10 days of hire or prior to initial assignment toa job with occupational exposure. Generaltraining on bloodborne pathogens, personalprotective equipment, exposures, etc. will beprovided using a video one year and by acertified trainer contracted by the City HealthOffice the following year. This plan will bereviewed annually by the Supervisor and the STPManager.

9.7.6 e. Control Devices

Bloodborne Pathogen Kits are located at thefollowing stations:

all vehicles

in the laboratory next to the door

outside the entrance to the Mens

Restroom in the Administration Building

in the shop above the deep sink

The kits contain the following: Red biohazard waste bags

Mouth to mouth barrier

Nose/mouth mask

Disposable gloves

Disposable aprons

Infectious liquid spill control powder

Additional information:

Sharps containers are located in allthe trucks. Contact the supervisor forreplacements.

Additional disposable gloves are in thelaboratory and in the trucks.

Kneepads are located in the lockers.

Red bags for contaminated laundry(including uniforms with employees


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blood on them) are supplied and arelocated in the mens locker room.

Red bags for all other contaminateditems are located in the laboratory.

Vehicle kits are inspected and re-

stoked immediately following use orannually when the vehicles areserviced.

Facility kits are used for the annualsite specific training. After thetraining the kit contents areinspected, re-stocked and sealed again.

9.8 Standard Operating Procedure for Chemical Handling

9.8.1 General Precautions

Safety Precautions

Wear safety glasses, a face shield, gloves, rubber

boots, and rain gear when receiving the chemicals.

9.8.2 First Aid for Chemical Exposure

1.Eyes

Immediately flush skin with running water for at

least 15 minutes while removing contaminated

clothing and shoes. Do not attempt to neutralize.

Get medical attention. Wash all clothing before

reuse. Dispose of contaminated shoes.

2.Skin

Immediately flush skin with running water for at

least 15 minutes while removing contaminated

clothing and shoes. Do not attempt to neutralize.

Get medical attention. Wash all clothing before

reuse. Dispose of contaminated shoes.

3.Ingestion


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Give several glasses of water if victim is

conscious. Do NOT induce vomiting. Seek medical

attention immediately. Do not give anything by

mouth if person is unconscious or if having

convulsions.

4.Inhalation

Stop work immediately and move to fresh air. If

breathing has stopped give CPR to person. Seek

medical attention if the exposure is severe.

9.8.3 Spill Reporting

a. Reportable Quantity

The reportable quantity is determined on the

type of chemical spilt. A list of chemicals that

will be used by the STP as well as the

corresponding reportable quantity shall be

prepared.

b. Notification

If there is a spill greater than the

reportable quantity released into theenvironment, call 117 and then notify the

supervisor.

9.8.4 Spill Clean Up

Wear the appropriate PPE.

A.

Land/Liquid Spill

Contain the spill and recover as much of the

chemical as possible and pump into the chemical

tank. Use a commercial absorbent to absorb the

remaining chemical. Place the used absorbent

material in a drum and dispose of at a hazardous


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waste disposal site. Dike the area to contain the

wash water, then hose the pavement. Neutralize

the wash water before discharging the wash water

into the headworks.

B.

Solid Waste

Dispose of solid waste at a hazardous waste

disposal site.

9.9 Accident Prevention Plan Confined Spaces Entry

Procedures

A confined space is defined as a space that:

1.is large enough and so configured that an

employee can bodily enter and performassigned work; and

2.has limited or restricted means for entry

or exit (for example, tanks, vessels,

silos, storage bins, hoppers, vaults, and

pits are spaces that may have limited

means of entry); and

3.is designed for continuous employee

occupancy

For the purpose of this safety provisions, twoconfined space classifications:

1.Class A Space confined space is not

exposed, nor has the potential of being

exposed to raw wastewater; Non-IDLH (

Non-Immediately Dangerous to Life or

Health);

2.Class B Space confined space is

exposed, or has the potential of being

exposed to raw wastewater (IDLH);

9.9.1 Entry Procedures for Class A Space

Whenever it is necessary to enter a confinedspace, the following procedure shall be strictlyadhered to. Any willful violation of these procedures


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can be considered cause for immediate dismissal fromthe employment.

1.A confined spaces entry permit shall beused to review the required precautionsand conditions prior to entry. The permitshall be fully completed and understoodby each employee involved with the jobtask. Each permit authorizes a singleentry into the specified confined space.Should the space be vacated andventilation is halted, a new permit shallbe required upon re-entry into theconfined space. Confined spaces entrypermits are valid only when signed by theattendant.

2.All traffic control measures shall betaken.

3.

The hazardous waste guidelines hereinprovided shall be followed whereapplicable.

4.An initial test of the atmosphere shallbe performed to assure that the oxygencontent, carbon monoxide, hydrogensulfide and any explosive vapors are atan acceptable level. Whenever possible,this test shall be performed prior toactually opening the space; for example,manholes should be tested before removing

the cover by probing the atmospherethrough the cover pick-hole. Importantsteps include:

a.Ensuring that instrumentation hasbeen calibrated according tomanufacturers instructions prior to

use.b.Understanding the following

operating instructions for theinstrument.

c.Atmospheric testing devices shall be

tested with calibration gas prior touse. The purpose of this test is toensure that the device willrecognize alarm conditions.

d.If an alarm condition develops, thearea shall be immediately evacuatedand the lead worker contacted.


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e.Ventilation is not a substitute foratmospheric testing.

f.Ventilation shall be performed forfive minutes or five air exchangeswhichever is greater. Care shall betaken to prevent pockets ofunventilated gases in the confinedspace. Also, the fresh air supplymust be from an uncontaminatedsource, for example, avoid engineexhaust.

g.Ventilation shall be continued aslong as the confined space isoccupied. If the ventilation hosemust be removed to move men ormaterials through the entryway, thehose shall be replaced and

ventilation continued as soon as itis possible to do so. All work shallstop and the area shall be evacuatedif ventilation fails.

h.The confined space shall beevacuated if any indications of illeffects such as dizziness,irritation or excessive odors arenoted.

5.All persons entering confined spacesshall read and understand this guidelines

and trained as to the nature of thehazards involved, the necessaryprecautions, and the use of protectiveand emergency equipment required.

6.All persons entering a confined spaceshall wear an approved rescue harness.

7.No routine tasks shall be performed inany atmosphere that causes an alarmcondition. Should it become necessary toenter a space to rescue a worker, thefollowing procedure shall be followed:

a.

Summon helpb.If the worker is attached to a

lifeline, attempt to remove theworker to fresh air. If he cannot beremoved, continue ventilation

c.The space may not be entered byanyone until there is a trainedattendant at the entryway. If you


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are alone, the odds are that youwill die if you enter the space tosave another worker.

d.Prepare to enter the space toperform the necessary rescue. Therescuer will be wearing a safetyharness with lifeline attached, aten-minute escape pack, or a SCBA.Other equipment may be requireddepending on the circumstances.

8.No smoking shall be permitted inside, orwithin ten feet of a confined space.

9.One person shall be designated as theattendant. The attendants responsibilitiesare as follows:

e.The attendant shall be responsiblefor safe entry on site.

f.

The attendant shall be responsiblefor the condition of testing andsafety equipment in use.

g.The attendant shall remain at theentryway at all times when workersare in the confined space.

h.The attendant shall keep watch on,maintain communication with theworkers and SHALL NOT leave theentryway to satisfy routine needs ofthe workers, such as fetching tools,

etc.i.The attendant shall monitor the

atmospheric testing device andinform the workers should an alarmcondition develop.

10. Atmospheric testing shall be continuouswhile the confined space is occupied.

11. All persons shall immediately vacatethe confined space should an alarm conditiondevelop. Alarm set points shall be:

j.Oxygen 19.5% minimum and 23%

maximum.k.Hydrogen Sulfide 10 ppm maximum.l.Lower explosive limit (lel) 10%

maximum.m.Carbon Monoxide 35 ppm maximum

12. All workers in confined spaces shallwear a hard hat.


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13. If any piece of equipment required forsafe entry of confined spaces is defectiveor missing, work shall be halted until theequipment is repaired or replaced.

14. All portable electric tools shall beconnected to a ground fault interrupter.

15.

Hot work shall not be permitted if theatmosphere contains explosive gases greaterthan 10% of the lower explosive limit.

16. Any hazardous condition encounteredshall be noted on the confined space entrypermit.

9.9.2 Class B Entry Procedures

1.All Class A space entry procedures shallbe followed.

2.

2. All persons entering a Class B space

shall be on an approved lifeline.3.All persons entering a Class B space shall

carry a ten minute escape pack. The use of aself-contained breathing apparatus (SCBA)shall preclude this requirement. An air linerespirator is not a SCBA.

4.A Class B space may be downgraded to aClass A space if presenceor potential ofraw wastewater exposure is eliminated.

9.9.3 Hot Work

It is any procedure that by its nature couldcause combustion of explosive gases. This wouldinclude, but is not limited to welding, brazing,soldering, cutting, heating, grinding, drilling,sanding and chipping. Hot work shall require a hotwork permit.

1.Any hot work involving sources of ignitionand including welding and burning shallrequire positive assurance that fire hazards

and flammable atmospheres have beencontrolled. Combustible material shall beprotected.

2.A combustible gas indicator shall test theatmosphere continuously.

3.Where hot work involves the generation oftoxic gases, vapors, or fumes, local exhaust


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and/or respiratory protection shall beequired.

4.Compressed gas cylinders should notgenerally be allowed in confined spaces.Compressed gas lines shall be protected fromrupture or damage

5.

Compressed gas cylinders or electricgenerators should be attended at all times.Sources of compressed gases or arc weldingpower shall be turned off immediately whenan emergency arises, or when work isinterrupted or completed.

9.9.4 Use of Toxic and/or Flammable Materials inConfined Spaces

Work in confined spaces frequently requires the use

of toxic or flammable materials. These include, butare not confined to, coating, linings, paints,cements and solvents.

1.Quantities of toxic or flammable materialsbrought into or used in confined spacesshall be limited to the smallest amountconsistent with efficient use.

2.Containers shall be designed to minimizeevaporation and spillage. Safety cans orsmall squeeze bottles are preferable when

applicable.3. Continuous ventilation shall be provided

in sufficient quantity and design tocontrol fire and health hazards.

4.Atmospheres shall be tested continuouslyto provide positive assurance that hazardsdo not exist. In no instance shallflammable vapour concentrations exceed 10%of the lower explosive limit.

5.Spraying of toxic or flammable substancessuch as paint is not recommended.

6.

Respiratory protective equipment shall beused as required.

7.Sources of ignition shall be eliminatedwhen flammable liquids are used.

8.Materials, equipment and training shall beprovided to clean up spills.


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9.All applicable instructions orrecommendations from the manufacturershall be enforced.

9.9.4 Permit Required Confined Spaces for the STP

1.

Administration Building

a.Oil-Water Separator Sump

2.Headworks

a.Influent Sampling Manholeb.Influent Wet Wellc.Lower Level Sump Pump Wet Welld.Septage Tankse.Screw Pump Inlet Sumps

f.

Influent Channelg.Barscreen Channelsh.Parshall Flume Chambers

3.Primary Clarifiers

a.Primary Influent Channelb.Primary Tanks #1 and #2c.Primary Effluent Channeld.Secondary Bypass Channele.Gravity Thickeners #1 and #2

4.Aeration Basins

a.Influent Channels of Tanksb.Open air tanks which cannot be

effectively ventilated. Personnelentering these tanks should carry aconfined space meter.

c.Effluent Channeld.Scum Pit

5.

Chemical Rooms6.Effluent Area

a.Splitter box (if available)b.Chlorine Contact Chambersc.Secondary Clarifiers which are open

air tanks that cannot be effectivelyventilated. Personnel entering these


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tanks should carry a confined spacemeter.

d.Under Drain Pump Statione.Scum Boxf.Chemical Mixing Chamberg.Effluent Channelh.

Effluent Pumps Wet Welli.Effluent Pumps Valve Vault

7.Odor Control Facility

a.Chemical Storage Tanksb.Caustic Tankc.Scrubber Caustic Tankd.Scrubber Ductinge.Scrubber Fan Housing

8.

All Areas Outside of the Main Plant

a.All pumping station wet wellsb.All pumping station valve vaultsc.All collection system manholesd.All flowmeter vaults

9.9.5 Non Permit Required Confined Spaces

A. Attic Spaces in the Admin BuildingB. Screw Pump Room Stairwell Area

C. Polymer Tank Containment Area

9.10 Accident Prevention Plan Hazardous Communication Plan

1.Plant Hazard Communication

To ensure that information about the dangers ofall hazardous chemicals used by the Sewerage TreatmentPlant is known by all affected employees, thefollowing hazardous information program has been

established.

All operators must participate in the HazardousCommunication Program. This program will always beavailable on the bookshelf above the control room deskfor review by any interested operator.

2.Container Labelling


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All operators will verify that all containersreceived for use will be clearly labelled as to thecontents, note the appropriate hazard warning, andlist the name and address of the manufacturer. Whentransferring contents to a secondary container theoperator will label the container with either an extracopy of the original manufacturers label or with

labels that have the identity and the appropriatehazard warning. For help with labelling, coordinatewith the Laboratory or Operations Supervisor. Theplant maintenance program will generate a work orderevery six months assigning an operator to review andupdate the file and to check the plant for newchemicals that encoding and inventory. The operatorassigned with MSDS will review secondary labelling andupdates as needed.

3.Material Safety Data Sheets (MSDS)

The STP Manager is responsible for establishingand monitoring the plantsmaterial safety data sheets(MSDS) and will make sure procedures are developed toobtain the necessary MSDS and will review incomingMSDSs for new or significant health and safety

information. The Operations Supervisor will see that

any new information is passed on to affectedemployees.

Copies of MSDSs for all hazardous chemicals in

use will be kept in the same location as thisguidelines; MSDSs will be available to all operators

during each work shift. If an MSDS is not available,immediately contact the current Safety Officer, theSTP Manager and/or the designated supervisor.

4.Employee Training Information

The Operations Supervisor is responsible for the

plant's employee training program. The OperationsSupervisor will ensure that all program elementsspecified below are carried out, and will also clearall program elements with the Plant Manager. Uponstarting work, each new employee of the WastewaterTreatment Plant will receive a health and safetyorientation included in normal Wastewater TreatmentPlant training that includes the following:


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1.An overview of the requirements contained inthe Hazard Communications Standard.

2.Hazardous chemicals present at the SewerageTreatment Plant.

3.Physical risks such as gas build up in pipingand health risks of the hazardous chemicalsincluding the symptoms of overexposure.

4.How to determine the present of hazardouschemicals in the Sewerage Treatment Plant.

5.How to reduce or prevent exposure to hazardouschemicals through use of control procedures,work practices and personnel protectiveequipment.

6.Steps ZCWD has taken to reduce or preventexposure to hazardous chemicals

7.Procedures from the MSDSs to follow ifemployees are overexposed to hazardous

chemicals.8.How to read labels and review MSDSs to obtain

information.9.Location of the MSDS file and written hazard

communication program.10. Prior to introducing a new chemical hazard

into the Sewerage Treatment Plant, eachoperator will be given information and trainingas outlined above for the new chemical hazard.

5. Hazardous Non Routine Task

Periodically, all operators are required toperform hazardous non-routine tasks. Some examplesof non-routine tasks are confined space entry,painting, etc. Prior to starting work on suchprojects, each affected operator will be giveninformation by the Plant Manager and/or theOperations Supervisor about the hazardous chemicalsthe operator may encounter during such activity.This information will include specific chemicalhazards, protective and safety measures the operator

can use, and steps the City is using to reduce thehazards, including ventilation, respirators,presence of another operator and emergencyprocedures.

6. Informing Contractors


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It is the responsibility of the City to providecontractors with information about hazardouschemicals their employees may be exposed to on thejob site and suggested precautions for thecontractor's employees. Contractors will becontacted before work is started, to gather anddistribute information concerning any chemicalhazard that they may bring to the WastewaterTreatment Plant.

7. List of Hazardous Chemicals

All hazardous chemicals to be used will belisted in the MSDS books that will be located on thebookshelf above the control room desk. The bookswill be broken into four categories.

Volume I Oil and Paints

Volume II Hardware and Cleaners

Volume III Odor Control Chemicals andPlant Chemicals

Volme IV Laboratory Chemicals

Operators unfamiliar with the hazards of anychemical will look up the MSDS for that chemicalprior to using the chemical.

8. Hazard Communication Training Program

A.Objective

The Zamboanga City Water District SewerageTreatment Plant will establish a hazardcommunication training program the purpose ofwhich is to provide the knowledge andinformation the operator or part-time employeewill need and has the right to know pertainingto the safe handling of any hazardous chemicalused within or around the Sewerage TreatmentPlant. Binders will be assembled which willcontain the following:1.The Hazard Communication Standard2.The Laboratory Chemical Hygiene Plan3.The Hazard Communication Program Policy4.The Hazard Communication Training Policy

a.Current inventory listing all materialscontaining hazardous chemicals;


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b.Material Safety Data Sheet for allmaterials and products listed on theinventory. Request Letters Blank Forms.These binders will be available at alltimes to plant employees for review andwill be stored in the bookshelf areaabove the control room desk.

9. Training on the use of the Program

A. Hazard Communication Standard

As part of the training program, it isrequired that all STP employees read and becomefamiliar with the requirements of the HazardCommunication Standard.

Upon starting work at the STP, each newemployee will receive as part of their training,instructions on the use of the HazardCommunication and a review of the HazardousChemicals used in the operation of the Plant.

B. Hazardous Chemicals Inventory

A current and updated inventory will bekept listing all materials and productscontaining hazardous chemicals that are marked

with a warning or caution label. as newmaterials containing hazardous warning enter thePlant, they will be added to the inventory and aMSDS will be obtained from the Supplier orManufacturer and added to the binder.

C. Labeling

Chemical Manufacturers and Distributors arerequired to label, tag, or mark each containerof hazardous chemical (s), the appropriate

hazard warning, and the name and address of theChemical Manufacturer or responsible party.Containers, into which hazardous chemicals aretransferred, once they arrive at the Plant, mustalso be labelled with the identity of thehazardous chemical (s) and appropriate hazardwarnings if such identification is on acontainer, it must be reported immediately to


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the Plant Manager and/or Operations Supervisor.It should never be considered that a product issafe without first reading the label. If indoubt or if more information is needed relatedto the product, check the Hazard Communicationinventory and read the MSDS on the productbefore using.

D. MSDS

The Material Safety Data Sheet (MSDS) is animportant document, which provides the user withthe chemical hazard information needed to handlethe product safely. Described are the primaryroutes of entry into the body such asinhalation, ingestion, or skin absorption; and

precautions to take such as proper workpractices, personal protective clothing andequipment. All employees are required to takeadvantage of this information to avoidunnecessary injury.

10. Chemicals Used in the Treatment of Wastewater

A. Bulk ChemicalsHazardous chemicals commonly used at the

Plant and Pump Stations for the treatment ofwastewater may include, but not limited to,Sodium Hydroxide, Sodium Hypochlorite, Polymer,Sodium Bisulfite, Granulated Carbon and Bioxide.

B. Lab Chemicals

Lab chemicals are addressed in the ChemicalHygiene Plan, which will be prepared prior toplant operation.

C. Chemicals used in maintenance

Chemicals contacted during maintenanceprocedures include #2 diesel, solvent,acetylene, oxygen, carbon monoxide, oils andgreases. Refer to individual MSDSs for hazardinformation and first aid measures for any


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maintenance product that is unfamiliar to theuser.

11. Hazard Information and First Aid Measures

First Aid Measures for each type of chemicalsthat will be used for the STP will be developed upondetermination which of the common wastewatertreatment chemicals will be used for this purpose.

In general however, the following general firstaid measures will be performed:

1.Eyes - Flush immediately with plenty of watercontinually for 15 minutes. Get medicalattention immediately.

2.Skin - Flush plenty of water and removecontaminated clothing if needed. Get medical

attention immediately.3.Inhalation- remove to fresh air immediately.

Get immediate medical attention.4.Ingestion - do not induce vomiting. Give large

quantities of water. Get immediate medicalattention.

5.Spillage - contain spill and assess thesituation

6.Personal Protective Equipment - to protect thebody from contact, wear impervious gloves,goggles, face shield and chemical spill

raingear

9.11 Accident Prevention Plan for Hazardous Energy Control& Safety Lockout / Tag-out

Purpose

In order to ensure maximum safety foremployees and associated personnel, the ZCWDSewerage Treatment Plant will establish thefollowing regarding the de-energizing of

hazardous energy sources on equipment down formaintenance or service. These energy sources caninclude electrical, hydraulic, pneumatic andgravity.


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Procedure

1.Before any type of power equipment is tohave maintenance or service performed, itshall be isolated from all power and storedenergy sources. If possible, the storedenergy of the equipment being serviced ormaintained shall be released. The purpose ofthis procedure is to ensure that no re-energization will occur until the lockoutsystem is removed. All employees of theSewerage Treatment Plant are required to usethese procedures.

2.Proper notification to all affectedemployees or associated personnel must beestablished prior to locking out equipment.

A supervisor, all operators and anycontractors or sub-contractors workingaround equipment to be locked out shall benotified. All employees who are in the samework area are to be notified. All employeeswhose work area can be affected by thelockout shall be notified.

3.Equipment to be locked out shall be shutdown by normal means before locking out. Allstored electrical energy, hydraulic energy,

mechanical energy, pneumatic energy,gravitational energy, or other stored energyshall be released or neutralized. Any storedenergy, which cannot be released, is to beblocked and/or locked to prevent itsrelease.

4.Lockouts require personal locks to beeffective. Tags for identification purposesshall accompany locks and/or lockoutdevices. If more than one person is working

on a locked out unit, lockout clips thatwill accommodate more than one lock shall beused. Each employee shall have a lock on thelockout clip.

5.Electrical power lockouts are to be placedat the energy source. Motor disconnects,branch power switches, and brand power


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breakers are energy sources. Circuit breakerboxes are not good lockout points as theyprevent access to other circuits in thebreaker box. On/Off switches are notacceptable lockout points.

6.

When a chain is used as a locking device, agang lock clip shall be used to join chainends to accommodate multiple locks.

Lock-Out Station Locations

Lock-out stations for the ZCWD SewerageTreatment Plant will be located as soon asthe plans for the designs of the STP will beapproved and before the plant operationcommences.

Tag-Out Procedures

1.All equipment taken out of service shall betagged out in accordance with EquipmentSpecific Tag-out Procedures utilizing an"out of service" tag attached to a gang lockclip with a nylon self-locking wire tie.

2.All equipment being put back into serviceshall be done in accordane with Equipment

Specific Start up Procedures. Start up shallbe authorized by a supervisor or plantmanager, unless startup is being performedby individual who took equipment out ofservice in accordance to Equipment SpecificTag-out Procedures.

3.Authorization for start up shall be recordedon the tag out/start up sheet. Adherence toprocedures shall be recorded on tag-out/startup sheet.

4.Tags are not to be used to provide a safeworking environment for any individual. Tagsare to be used only to keep a piece ofequipment out of service.

5.Procedures, logs, tags, ties, and locks arelocated at each lockout/tag-out station.


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Lock Out Procedures

Any person subject to injury workingon or around tagged out equipment shallinstall a personal lock on the gang lockclip used for tag-out. A signed and datedDanger--"Do Not Operate" tag shallaccompany all personal locks. The key tothe lock will be on the person whoinstalled the lock at all times. Theselocks will be removed by the end of eachshift, or working day, and re-installed when andif work is to be resumed by that person.These locks and tags are located at eachlockout/tag-out station.

1.

All equipment being worked on shall belocked out in accordance with EquipmentSpecific Lock-out Procedures utilizing an"Do Not Operate" tag attached to a ganglock clip with a lock for each personworking on or around the equipment.

2.All equipment being put back into serviceshall be done in accordance with EquipmentSpecific Start up Procedures. Start upshall be authorized by a supervisor or

plant manager, unless start up is beingperformed by individual who took equipmentout of service in accordance to EquipmentSpecific Lock-out Procedures.

3.Authorization for start up shall berecorded on the Lockout/start up sheet.Adherence to procedures shall be recordedon the Lockout/start up sheet.

4.Procedures, logs, tags, ties, and locks are

located at each lockout/tag-out station.

A. Lock out/Tag out Devices

1.Lock out/tag out devices shall be capableof withstanding the environment to whichthey are exposed for the maximum time thatexposure is expected.


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2.Lock out/tag out devices shall besubstantial enough to prevent removalwithout use of excessive force or unusualtechniques; such as with the use of boltcutters or other metal cutting tools.

3.Lock out/tag out devices shall bestandardized in color (red). Print andformat in tags shall be standardized.

B. Periodic Inspection

An annual inspection shall be performed anddocumented by safety officer. The purpose ofthis inspection is to ensure the procedures andrequirements of this policy are being followed.Any deviations or inadequacies identified shallbe corrected.

C. Training

1.Training shall be provided on an annualbasis to ensure that employees understandthe purpose and function of the lock out-tag out program, and that the employeesacquire the knowledge and skills requiredfor the safe application, usage, andremoval of lock out/tag out devices.

2.When a tag-out system is used, as is the

case at this plant, employees shall betrained in the limitations of tags. Tagsare essentially warning devices and do notprovide physical restraint that is providedby a lock. When an out-of-service tag isattached to an energy-isolating device, itis not to be removed without authorizationfrom a foreman or plant manager, unlessperson removing tag is same person whotagged outequipment removed from service.This policy is never to be bypassed,

ignored, or otherwise defeated.3.Retraining shall be provided to affected

employees whenever there is a change inmachines, equipment or processes thatpresent a new hazard, or when there is achange in the energy control procedures.


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Compliance

Any employee who does not comply withthis plan is subject to disciplinaryactions and possible termination of employment.

9.12 Chemical Hygiene Plan

Purpose

The purpose of the Chemical Hygiene Plan is toprotect employees from health hazards while workingwith hazardous chemicals by establishing safe workpractices and procedures.

Hazardous chemicals Chemicals for which there

is significant evidence based on

at least one legitimate studythat acute or chronic healtheffects may occur in exposedemployees.

Health hazard A chemical that is a health

hazard will likely cause a measurablechange in the body. The term health

hazard includes chemicals which are

carcinogens, toxic or highly toxicagents, reproductive toxins,

irritants, corrosives, sensitizers,hepatotoxins (chemicals which produceliver damage), nephrotoxins(chemicals which produce kidneydamage), neurotoxins (chemicals whoseprimary toxic effect is on thenervous system), agents which act onthe hematopoietic (blood) systems,and agents which damage the lungs,skin, eyes, or mucous membranes.

Acute health effects areimmediate or slightly delayed (burns,inflammation, allergic responses,damage to eyes, lungs, nervoussystem); chronic health effects aredelayed or cumulative afterrepetitive exposure (some arereversible after elimination of


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exposure to chemical, some areirreversible (cancer).

In addition to the chemicalhazards there are physical hazards toconsider. Physical hazards includefire, explosion, electrical shock,and hazards from the means ofcontainment (gas cylinders, glassapparatus, furnaces, etc).

Plan Management

A. Availability of the Chemical HygienePlan

A copy of the Chemical Hygiene Plan is

kept in the lab with a copy of the NPDESPermit, SOPs, the QA/QC Manual, and otherrelated documents. The Chemical Hygiene Planis readily available to employees, employeerepresentatives and, upon request, to thedirector of the department of Labor andIndustries.

B. Responsibility

1. The Plant Manager is ultimately

responsible for ensuring the ChemicalHygiene Plan is implemented andenforced.2. The Lab Supervisor is alsodesignated as the Chemical HygieneOfficer. The Chemical Hygiene Officerhas the following responsibilities:

Work with administrators and otheremployees to establish chemicalhygiene policies and practices.

Monitor purchase, use, and

disposal of chemicals used in thelab

Know the current legalrequirements concerning regulatedsubstances

Seek ways to improve the ChemicalHygiene Plan


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3. The Lab Supervisorsresponsibilities are:

Ensure workers know and follow thechemical hygiene rules.

Ensure protective equipment is

available and in working order Ensure appropriate training has

been provided

Provide regular, formal chemicalhygiene and housekeepinginspections

Ensure routine inspections ofemergency equipment are done

Know the current legalrequirements concerning regulatedsubstances

Determine the required levels ofprotective apparel and equipment

Ensure employees are trained andthe facilities are adequate forany material being ordered

4.The lab worker is responsible for:

Following the practices describedin the Chemical Hygiene Plan foreach operation

Developing good personal chemical

hygiene habits

C. Information and Training

All Wastewater Treatment Plantemployees are trained in first aid. Chemicalhygiene training occurs each time anoperator rotates into the lab. Trainingcovers the following issues:

The risks associated with workingin the lab

What to do if there is an accident The location and proper use ofprotective apparel and equipment

Review of the Chemical Hygieneplan

D. Review and Update of the Plan


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The Chemical Hygiene Plan is reviewedand updated by the Chemical Hygiene Officeras follows:

Annually

Whenever new procedures are

implemented which involve the useof hazardous chemicals

To reflect changes in the law

Procedures for Working with Chemicals

A. Emergencies

In case of an emergency CALL 117 forfire, ambulance, and police.

B. General Rules

Minimize all chemical exposures byplanning ahead and performing work in amanner which reduces the duration and extentof exposure to all chemicals.

Avoid skin contact with all chemicals(Few chemicals are without

hazards)

Use special precautions for chemicals with

special hazards. Assume any mixture is more toxic than its

most toxic component

Assume all substances of unknown t

environmental sanitation clearance

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