UEVtEVV X3FfA- CPE REPORT
The CPE report will, be reviewed by the state to
ensure that the CPE team has followed the proper
protocol and has considered all of the key CPE
areas. The review ensures that the evaluation and
report maintains a focus on public health, optimiz-
ing performance, and the multiple barrier strategy
of surface water treatment.
Introduction to Comprehensive Performance
Evaluations
(EPA/625/C-01-011) CPE Training CD
Optimizing Water Treatment Plant Performance
Using the Composite Correction Program
(EPA 625/6-91/027/August 1998)
For ordering either of these documents or for
general drinking water information, contact EPA's
Safe Drinking Water Hotline [800-426-4791] or see
the EPA website http://www. eoa. gov/
safewater.html.
Office of Water (4606M)
EPA 816-F-02-20
www.epa.gov/safewater
November 2002
Comprehensive
Performance
Evaluation (CPE):
The Basics
Printed on Recycled Paper
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This brochure is intended
for use by surface water
treatment systems, state
personnel, and third-
parties that'have become involved with a Compre-
hensive Performance Evaluation (CPE) of a surface
water treatment plant. The CPE was originally
developed as a voluntary activity to assist filtration
plants in achieving "optimized" performance and
thereby achieving an increased level of public
health protection. With EPA's promulgation of the
Interim Enhanced Surface Water Treatment Rule
(IESWTR) and the Long Term 1 Enhanced Surface
Water Treatment Rule (LT1ESWTR), some systems
may now be required to have a CPE conducted at
their facility. The fundamental procedures for a
CPE, whether initiated due.to an individual filter
effluent trigger or simply to achieve plant optimiza-
tion, are the same. The process will involve the
water system staff, state regulators, and, depend-
ing on the policies of the state, possibly a third-
party.
PLEASE NOTE: The information presented here is
not intended to instruct the reader in how to
conduct a CPE, but rather to help systems, states,
and third-parties understand their roles and respon-
sibilities in the CPE process. Specific information on
how to conduct a CPE is presented in the refer-
ences cited at the end of this brochure.
A CPE is a thorough
review and analysis
of a filtration plant's
performance and an
assessment of the impact of administrative, design,
operation, and maintenance practices on the plant's
turbidity levels. The CPE focuses on factors that
adversely impact a plant's ability to achieve opti-
mized performance and consists of the following
components:
e assessment of plant performance;
.* evaluation of major unit processes;
• identification and prioritization of
performance limiting factors;
* .assessment of the applicability of follow-up
activities necessary; and
• preparation of a CPE report.
\HAT SHOULD A CP REPOT
Assessment of the performance of the plant includ-
ing evaluations of sedimentation basin performance,
filter media, and filter performance'during routine
operation and critical "worst-case" time pe.riods
(e.g., peak flow conditions and directly after
backwash). The report should include a graphical-
representation of the plant's performance over a 1-
year period that shows raw, clarified, and finished
water turbidity against time.
Evaluation of all major unit processes existing at the
plant, for their potential to achieve optimized
performance (including flocculation, sedimentation,
filtration and disinfection processes). The report
should emphasize maximizing the use of existing
facilities rather than constructing new infrastruc-
ture.
Performance Limiting Factors that were identified
as impacting plant performance should be listed in
their order of priority. Issues such as the aesthetics
of the plant should not be included in the report
unless linked to the performance problems. The
report should not include specific recommendations
. for improvements. Recommendations are best
addressed in follow-up technical assistance, ideally
through solutions developed and implemented by
plant staff with outside facilitation.
The report should be free of design or operational
bias. Engineering professionals may be inclined to
emphasize design factors. CPE teams may also be
reluctant to identify operational and administrative
issues that may offend or impact the plant's staff.
Preferably, the report should emphasize operational
solutions rather than major design changes,
Assessment of potential follow-up activities appro-
priate for the plant. Follow-up could include state-
directed Comprehensive Technical Assistance
(CTA) or third-party activities.
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El agua de la playa parece limpia, Cpero, lo es?
Podria valer la pena averiguar antes de que usted
o sus ninos vayan a nadar. El agua en la mayoria de las
playas, la mayor parte del tiempo, es segura para nadar.
Sin embargo, usted no puede estar segUro.que el agua de
una playa es segura a menos que se hagan pruebas, debido
a que el agua en la playa puede contener microorganismos
patogenos que no se pueden very producen enfermedades.
El monitoreo de la calidad del agua en la playa por
los oficiales locales de la salud y medio ambiente es
necesario para advertir a los ciudadanos cuando hay
un problema. Con la aprobacion de la ley "Beaches
Environmental Assessment and Coastal Health
Act" (BEACHES) del 10 de octubre, de 2000, se
enmendo el "Clean Water Act" para incluir nuevas pro-
visiones significativas para la proteccion de las playas.
Esta nueva ley autoriza un programa nacional de
fondos para asistir a los gobiernos locales, estatales, y
tribales en el desarrollo e implementacion de programas
de monitoreo y notificacion al publico para sus aguas
recreativas costeras. Tambien requiere que los estados
adopten mejores estandares de calidad de agua para
patogenos e indicadores de patogenos y requiere que la
EPA realice estudios y desarrolle mejores guias para
establecer criterios microbiologicos de calidad del agua.
v •
Ademas, la ley requiere que la EPA desarrolle
criterios de desempeno para monitoreo, notificacion, y
bases de datos con informacion pubhca y requiere que
otras agencias federales establezcan ciertos programas.
Como afeeta iq contaminaeion de fa playa a
usted y CB sis faniflia?
1——• 1 agua puede estar contaminada por diferentes
L—.cosas. Basura, como platos desechables, bolsas y
botellas plasticas, y colillas de cigarrillos se ven facil-
mente. Frecuentemente son. las cosas que no se puede
ver, como las bacterias y o.tros.microorganismos, sobre
los que tenemos que prestar mas atencion. Si usted o
Preguntos para hacer a lo ofictna (ocai de
monitoreo de (a salud de las playas:
• Cuales playas ustedes monitorean y con que
frecuencia?
9 Que evaluan ustedes?
• Donde puedo ver los resultados de las pruebas y
quien me los puede explicar?
• Cuales son las principales fuentes de contami-
naeion que afectan a esta playa?
Que hacer si su piaya no es monitoreada
regularmente:
• Evite nadar despues de lluvias intensas.
8 Busque descargas de aguas lluvias a lo largo de
la playa. No nade cerca de ellas.
• Si el agua de la playa esta designada una zona
de "no descargue" de aguas residuales de
embarcaciones, averigiie si los servicios de recep-
cion portuaria para los desechos solidos estan
disponibles y funcionando.
9 Busque basura u otras senales de contaminaeion
como manchas de petroleo en el agua. Estos
tipos de contaminantes pueden indicar la pres-
encia de microorganismos patogenos que tal vez
hayan sido arrastrados al agua.
• Si cree que el agua de la playa esta contami-
nada, comuniquese con los oficiales locales
de salud o proteccion ambiental. Para ellos,
es importante informarse sobre sospechas de
contaminaeion del agua en la playa para poder
proteger a los ciudadanos de
la exposicion.
• Trabaje con las autoridades
locales para crear un pro-
grama de monitoreo.
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