HomeMy WebLinkAboutCCST Smart Meter FINAL.pdfHEALTH
IMPACTS OF RADIO FREQUENCY EXPOSURE
FROM SMART METERS
APRIL 2011 -FINAL REPORT
ACKNOWLEDGMENTS
We would like to thank the many people who provided input and feedback towards the
completion of this report.Without the insightful feedback that these individuals generously
provided,this report could not have been completed.We would like to give special thanks
to the California Smart Grid Center,College of Engineeringand Computer Science at the
California State University,Sacramento and to the University of California's Center for
Information Technology Research in the Interest of Society (ClTRIS).
This report was conducted with the oversight of a CCST Smart Meter Project Team,whose
members include:Rollin Richmond (Chair),Emir Macari,Patrick Mantey,Paul Wright,Ryan
McCarthy,Jane Long,David Winickoff,and Larry Papay.We also thank J.D.Stack for his
technical contributions and Lora Lee Martin for the overall coordination of this report
response.We express gratitude to CCST's members and colleagues for their many
contributions to the report.Comments on the January 2011 draft of this report were
solicited from the public.Many very thoughtful and informed comments were received.All
public comments were reviewed and taken into consideration as this final report was
completed.
COPYRIGHT
Copyright 2010 by the California Council on Science and Technology.Library of Congress
Cataloging Number in Publications Data Main Entry Under Title:
Health Impacts of Radio Frequency Exposure From Smart Meters
April 2011
ISBN-13:978-1-930117-42-6
CCST is a non-profitorganization established in 1988 at the request of the California State
Government and sponsored by the major public and private postsecondary institutions of
California and affiliate federal laboratories in conjunctionwith leading private-sector firms.
CCST's mission is to improve science and technology policy and application in California by
proposing programs,conducting analyses,and recommending public policies and initiatives
that will maintain California's technological leadership and a vigorous economy.
Note:The California Council on Science and Technology (CCST)has made every reasonable
effort to assure the accuracy of the information in this publication.However,the contents
of this publication are subject to changes,omissions,and errors,and CCST does not accept
responsibility for any inaccuracies that may occur.
For questions or comments on this publication contact:
California Council on Science and Technology
1130 K Street,Suite 280
Sacramento,California 95814
(916)492-0996
ccst@ccst.us
Table of contents
Lette rf ro m CCST ............................................................................................................................1
Key report findings .........................................................................................................................2
Othercons i der at io ns ......................................................................................................................2
Legislative request..........................................................................................................................4
A ppro a ch ........................................................................................................................................4
Two types of radio frequency effects:Thermal and Non-thermal.................................................5
F i ndi n gs ..........................................................................................................................................5
What are smart meters?................................................................................................................8
Why are smart meters being installed throughoutCalifornia?....................................................10
What health concerns are associated with smart meters?..........................................................13
FCC guidelines address known thermal effects only,not non-thermal effects............................14
Power density (and exposure level)declines rapidly with distance.............................................17
Comparison of electromagnetic frequencies from smart meters and other devices...................18
What is duty cycle and how does it related to RF exposure?.......................................................21
What about exposure levels from a bank of meters and from just behind
the wall of a single meter?...........................................................................................22
Is the FCC standard sufficient to protect public health?..............................................................22
Are ad d itiona I tech nology-specific sta nda rds needed ?...............................................................22
Publ i c i nform at i on a ndeduc a t io n ................................................................................................2 3
Alternatives to wireless?..............................................................................................................23
Key factors to consider when evaluating exposure to radiofrequency from smart meters?.......24
Conclusion ....................................................................................................................................25
Appendix A -Letters requesting CCST assistance........................................................................26
Assem bly Member H uff ma n's Letter................................................................................26
Asse mb ly MemberMonn i n g's Lette r ...............................................................................29
City of Mill Valley Letter ...................................................................................................29
Appendix B -Project Process .......................................................................................................31
A ppend ix C -P ro ject Tea m ..........................................................................................................33
A ppend ix D -Wr itt en Su bm is s i on A utho rs ..................................................................................36
A ppend ix E -M a te ri a I s Co nsu Ited................................................................................................37
Appendix F -Glossary ..................................................................................................................44
A ppend ix G -CCST 2010 Bo a rdMembe rs....................................................................................46
Appendix H -CCST 2010 Council Members .................................................................................47
Appendix I
-Report Credits..........................................................................................................48
Letter from CCST
With rapidly emerging and evolving technologies,lawmakers at times find themselves
pressed to make policy decisions on complex technologies.Smart meters are one such
technology.
Smart meters are being deployed in many places in the world in an effort to create a new
generation of utility service based on the concepts of a smart grid,one that is agile,efficient
and cost effective.
The electricity crisis of 2000 and 2001 helped force the issue here in California,lending
significant urgency to the need for better management of power generation and
distribution.In 2006,the California Public Utilities Commission authorized the Pacific Gas
and Electric Company to implement a relativelynew technology,smart meters,to gather
much more precise information about power usage throughoutthe state.The process of
installing the meters throughoutthe state is still underway.
As with any new technology,there are unknowns involved.Smart meters generally work by
transmittinginformation wirelessly.Some people have expressed concerns about the
health effects of wireless signals,particularlyas they become virtually ubiquitous.These
concerns have recently been brought to the attention of state legislators,with some local
municipalities opting to ban further installation of the meters in their communities.
We are pleased that Assembly Members Huffman and Monning have turned to CCST for
input on this issue.It is CCST's charge to offer independent expert advice to the state
governmentand to recommend solutions to science and technology-related policy issues.
In this case,we have assembled a succinct but comprehensive overview of what is known
about human exposure to wireless signals and the efficacy of the FCC safety standards for
these signals.To do so,we assembled a project team that consulted with over two dozen
experts and sifted throughover a hundred articles and reports,providing a thorough,
unbiased overview in a relativelyrapid manner.
In situations where public sentiment urges policy makers to make policy decisions with
potentiallylong-term consequences,access to the best information possible is critical.This
is the role that CCST was created to fulfill.
Susan Hackwood Rollin Richmond
Executive Director,CCST Project Team Chair,CCST
Health Impacts of Radio Frequency from Smart Meters
Response to Assembly Members Huffman and Monning
California Council on Science and Technology
April 2011
KEY REPORT FINDINGS
1.Wireless smart meters,when installed and properly maintained,result in much
smaller levels of radio frequency (RF)exposure than many existing common
household electronic devices,particularlycell phones and microwave ovens.
2.The current FCC standard provides an adequate factor of safety against known
thermallyinduced health impacts of existing common household electronic devices
and smart meters.
3.To date,scientific studies have not identified or confirmed negative health effects
from potentialnon-thermal impacts of RF emissions such as those produced by
existing common household electronic devices and smart meters.
4.Not enough is currentlyknown about potential non-thermal impacts of radio
frequency emissions to identifyor recommend additional standards for such impacts
OTHERCONSIDERATIONS
Smart electricity meters are a key enabling technology for a "smart grid"that is
expected to become increasingly clean,efficient,reliable,and safe at a potentiallylower
cost to the consumer.The CCST Smart Meter Project Team offers the followingfor
further consideration by policy makers,regulators and the utilities.We appreciate that
each of these considerations would likely require a cost/benefitanalysis.However,we
feel they should be considered as the overall cumulative exposure to RF emissions in our
environment continues to expand.
1.As wireless technologies of all types increase in usage,it will be importantto:(a)
continue to quantitativelyassess the levels of RF emissions from common household
devices and smart meters to which the public may be exposed;and (b)continue to
investigate potential thermal and non-thermal impacts of such RF emissions on
human health.
2.Consumers should be provided with clearly understood information about the
radiofrequency emissions of all devices that emit RF including smart meters.Such
information should include intensityof output,duration and frequency of output,
and,in the cases of the smart meter,pattern of sending and receiving transmissions
to and from all sources.
3.The California Public Utilities Commission should consider doing an independent
review of the deployment of smart meters to determine if they are installed and
operating consistent with the information provided to the consumer.
4.Consideration could be given to alternative smart meter configurations (such as
wired)in those cases where wireless meters continue to be concern to consumers.
1
5000
4500
4000
3500
3000
2500
2000
1500
00 800
1000
500 200
0
0.00 Maximum
Minimum
Figure 1.Instantaneous Radio Frequency Power Density Levels of Common Devices (in microWatts/cm')
About this figure:This figure was developed by the CCST project team.Q.uantities for different distances
calculated using Inverse Square Law.Assumes distances in far-field,where power density reduces as the
square of the distance from the source.Smart meter power scaled to obtain output for 50%duty cycle.The
source for the various starting measurements came from Electric Power Research Institute (EPRI),Radio-
Frequency Exposure Levels from Smart Meters:A Case Study of One Model (February 2011)
2
Legislative Request
On July 30,2010,California Assembly Member Jared Huffman wrote to the California
Council on Science and Technology (CCST)to request that the Council perform an
"independent,science-based study...[that]would help policy makers and the general public
resolve the debate over whether smart meters present a significant risk of adverse health
effects."California Assembly Member Bill Monning signed onto the request with his own
letter to CCST on September 15,2010.The City of Mill Valley also sent a letter on
September 20th Supporting Assembly Member Huffman's request for the study.
Approach
Reflecting the requests of the Assembly Members,CCST agreed to compile and assess the
evidence available to address:
1.Whether Federal Communications Commission (FCC)standards for smart meters
are sufficiently protective of public health,taking into account current exposure
levels to radiofrequencyand electromagnetic fields.
2.Whether additional technology-specific standards are needed for smart meters
and other devices that are commonlyfound in and around homes,to ensure
adequate protection from adverse health effects.
CCST convened a Smart Meter Project Team composed of CCST Council and Board members
supplemented with additional experts in relevant fields (see Appendix A for Project Team
members).The Project Team identified and reviewed over 100 publications and postings
about smart meters and other devices in the same range of emissions,including research
related to cell phone RF emissions,and contacted over two dozen experts in radio and
electromagnetic emissions and related fields to seek their opinion on the two identified
issues.
It is important to note that CCST has not undertaken primary research of its own to address
these issues.This response is limited to soliciting input from technical experts and to
reviewing and evaluating available information from past and current research about health
impacts of RF emitted from electric appliances generally,and smart meters specifically.This
report has been extensively reviewed by the Project Team,experts in related fields,and has
been subject to the CCST peer review process (see Appendix B).It has also been made
available to the public for comment.
3
Two Types of Radio Frequency Effects:Thermal and Non-thermal
Household electronic devices,such as cellular and cordless telephones,microwave ovens,
wireless routers,and wireless smart meters produce RF emissions.Exposure to RF emissions
may lead to thermal and non-thermal effects.Thermal effects on humans have been
extensively studied and appear to be well understood.The Federal Communications
Commission (FCC)has established guidelines to protect public health from known hazards
associated with the thermal impacts of RF:tissue heating from absorbing energy associated
with radiofrequency emissions.Non-thermal effects,however,including cumulative or
prolonged exposure to lower levels of RF emissions,are not well understood.Some studies
have suggested non-thermal effects may include fatigue,headache,irritability,or even cancer.
But these findings have not been scientifically established,and the mechanisms that might lead
to non-thermaleffectsremain uncertain.Additional research and monitoring is needed to
better identifyand understand potential non-thermal effects.
Findings
Given the body of existing,generally accepted scientific knowledge regarding smart meters and
similar electronic devices,CCST finds that:
1.The FCC standard provides an adequate factor of safety against known RF induced
health impacts of smart meters and other electronic devices in the same range of RF
emissions.
The potential for behavioral disruption from increased body tissue temperatures is the
only biological health impact that has been consistently demonstrated and scientifically
proven to result from absorbing RF within the band of the electromagnetic spectrum
(EMF)that smart meters use.The Federal Communications Commission (FCC)has set a
limit on the Standard Absorption Rate (SAR)from electronic devices,which is well below
the level that has been demonstrated to affect behavior in laboratory animals.Smart
meters,including those being installed by Pacific Gas and Electric Company (PG&E)in
the Assembly Members'districts,if installed according to the manufacturers
instructions and consistent with the FCC certification,emit RF that is a very small
fraction of the exposure level established as safe by the FCC guidelines.
FCC staff has recently confirmed that it "relied on the expert opinions of EPA,NCRP,and
others to conclude that the RF exposure limits it adopted were adequately protective of
human health from all known adverse effects,regardless of whether these effects were
thermal or athermal in origin".1
The FCC guidelines provide a significant factor of safety against known RF impacts that
occur at the power levels and within the RF band used by smart meters.Given current
1 Statement provideby Robert Weller regarding FCC regulations on February 3,2011.Robert Weller,Chief,
Technical Analysis Branch,Office of Engineering and Technology,Federal Communications Commission.
4
scientific knowledge,the FCC guideline provides a more than adequate margin of safety
against known RF effects.
2.At this time there is no clear evidence that additional standards are needed to protect
the public from smart meters or other common household electronic devices.
Neither the relevant scientific literature nor our expert consultations support that there
is a causal relationship between RF emissions and non-thermal human health impacts.
Nor does the relevant evidence convincingly describe mechanisms for such impacts,
although more research is needed to better understand and verifythese potential
mechanisms.Given the absence of evidence supporting a real hazard,the benefits of
elevating existing standards are highly speculative.Further,there is not an existing basis
from which to understand what types of standards could be helpful or appropriate.
Without a clearer understanding of the biological mechanisms involved identifying
additional standards or evaluating the relative costs and benefits of those standards
cannot be determined at this time.
Given the existing significant scientific uncertaintyaround non-thermal effects,there is
currentlyno generally accepted definitive,evidence-based indication that additional
standards are needed.Because of the lack of generally accepted evidence,there is also
not an existing basis from which to understand what types of standards could be helpful
or appropriate.Without a clearer understanding of the biological mechanisms involved
identifying additional standards or evaluating the relative costs and benefits of those
standards cannot be determined at this time.
CCST notes that in some of the studies reviewed,contributors have raised emerging
questions from some in the medical and biological fields about the potential for
biological impacts other than the thermal impact that the FCC guidelines address.A
report of the National Academies identifies research needs and gaps and recommended
areas of research to be undertaken to further understanding of long-term exposure to
RF emissions from communication devices,particularlyfrom non-thermal mechanisms.
In our increasingly wireless society,smart meters account for a very small portion of RF
emissions to which we are exposed.Concerns about human health impacts of RF
emissions from smart meters should be considered in this broader context.
2 National Research Council (2008)Identificationof Research Needs Relating to Potential Biological or Adverse
Health Effects of Wireless Communication,The National Academies Press,Washington,D.C.
5
THE SCIENTIFIC METHOD
"Scientifically established","generally accepted scientific knowledge"and other such references
throughoutthis document are referencing information obtained throughthe scientific method.A
scientific method consists of the collection of data throughobservation and experimentation,and the
formulation and testing of hypotheses.These steps must be repeatable in order to predict future results.
Scientific inquiry is generally intended to be as objective as possible,to reduce biased interpretationsof
results.Another basic expectation is to document,archive and share all data and methodology so they are
available for careful scrutiny by other scientists,giving them the opportunityto verify results by
attempting to reproduce them.This practice,called full disclosure,also allows statistical measures of
the reliability of these data to be established.
INTERPRETING THE SCIENTIFICLITERATURE
In our review of the relevant scientific evidence,we privileged those studies that had as many of the
followingindicia of scientific reliability as possible:(1)Empirical testing;(2)Peer review and publication;
(3)The use of accepted standards and controls;(4)Degree to which the findingis generally accepted by a
relevant scientific community.These criteria of scientific reliability are broadly based on the standards of
expert testimony and evidence in the US Federal Courts.
Health concerns surrounding RF from smart meters are similar to those from many other
devices that we use in our daily lives,including cordless and cellular telephones,microwave
ovens,wireless routers,hair dryers,and wireless-enabled laptop computers.As detailed in the
report,a comparison of electromagnetic frequencies from smart meters and other devices
shows that the exposure level is very low.
Standards of Proof or Certaintyin Public Health
In this report,scientific evidence is the primary consideration.Upon consulting with the
California Department of Public Health,it is noted that using scientific evidence to shape public
policy is always challenging.The standards for declaring certaintywithin a scientific discipline,
which are based on the results of statistical testing,may be unrealistic or inappropriate for
making public policy decisions,particularlythose with potential impacts on population health.
Statistical tests usually rely on the convention of whether the results of a given study are
sufficient to reject the null hypothesis of no effect (i.e.,of a given exposure).This is effectively
a standard of 95%certainty,analogous to the legal standard of proof "beyond a reasonable
doubt."
In public health,five factors are generally considered when reviewing scientific evidence for
policy decisions related to specified exposures:
1.Severity of potential effect(s):e.g.,cancer or serious birth defects would be considered
more severe than skin irritation;
2.Number of people with potential exposure;
3.Levels of likely and possible exposures;
4.Degree of certaintyof the specific effect(s)at different exposure levels;certaintyjust
above 50%might be characterized as "more likely than not."
5.Cost to mitigate potential effect(s),typicallyconsidered in light of the other factors.
6
Policy makers constantlyweigh these factors consciously or unconsciously as they interact with
stakeholders to craft good public policy.In one situation,they might consider high-cost
mitigations for high-severity effects with high-certainty evidence.In another situation with
high-severity effects and "more likely than not"certaintyof those effects,they might choose
low-cost mitigations.This report did not extend beyond the scientific evidence realm with
which we were charged leavingthose issues to the policy makers to whom this report has been
delivered.
What are Smart Meters?
Smart meters measure attributes of electricity,natural gas,or water as delivered to consumers
and transmit that information (e.g.,usage)digitally to utility companies.Some smart meters
are also designed to transmit real-time information to the consumer.These smart meters
replace traditional,analog meters and meter readers with an automated process that is
expected to reduce operating costs for utilities,and potentially,costs for customers (see Figure
2).Each of California's major electricity utilities has begun deploying smart meter
infrastructure.
a.Analog Meter b.Digital Meter
Figure 2.a)An analog,conventional meter and a (b)digital smart meter (Source:PG&E)
There are many kinds of smart meters manufactured by a varietyof companies.The meter,
including sensors and the housing or casing,may be manufactured by one company while the
communications device (installed within the meter)is manufactured by another.Depending
upon the internal communications device employed,meters are configured to operate in a
wired or in wireless environment.The smart meters used by PG&E are made by General Electric
and Landis +Gyr and use a wireless communications technology from Silver Spring Networks.
Each of these PG&E meters has two transmitters to provide two different communications of
data from these meters."The first provides for the "automatic meter reading"(AMR)function
of the meter (and for more detailed and real time monitoring of the characteristics of the
*Tell,R.(2008)"Supplemental Report on An Analysis of Radiofrequency Fields Associated with Operation of the
PG&E Smart Meter Program Upgrade System,"Prepared for Pacific Gas &Electric Company,Richard Tell
Associates,Inc.,October 27.
7
electrical energy delivered to the consumer)and sends this data to an access point,where it is
collected along with data from many other customers and transmitted to PG&E using a wireless
area network (WAN)(similar to the way cell phone communication works).
SMART METER NETWORK
COMPONENTS Smart meter
.HAN
Home access
Utility access network
Will allowWANconsa-sto
monitor and
manage own
Wireless area
power use
network
Utility company
Figure 3.Simplified depiction of smart Meter system network.Arrows show the use of radiofrequency(RF)
signals for automated meter reading,communications among electric power meters,relays,access points,the
company's enterprisemanagement systems.The future home access network will operatewithin the house.
Smart meters have evolved from automatic meter reading (AMR;i.e.,replacing meter readers)
to a real time monitoring of power as delivered to the consumer by the utility company.CCST
obtained from PG&E the Richard Tell Associates report,which describes the operation of the
smart meter from the 2008 perspective of AMR,not a fully deployed real time smart grid.
The Richard Tell Associates reports describe the use of the smart meter radios being deployed
by PG&E as licensed by the FCC for a maximum power output of 1 W (watt)and within the 902-
928 MHz (mega-hertz)frequencyband.In its initial deployment,PG&E reports that it will
configure the radios to transmit data from the meter to the access point once every four hours,
for about 50 milliseconds at a time.4 Accounting for this,the current duty cycles of the smart
meter transmitter (that is,the percent of time that the meter operates)would then typicallybe
1 percent,or in some cases where the meter is frequently used as a relay,as much as 2-4
percent.This means that the typical smart meter in this initial (AMR)use would not transmit
any RF signal at least 96-98 percent of the time.
It is important to note that any one smart meter is part of a broader "mesh"network and may
act as a relay among other smart meters and utility access points.In addition,when the smart
4 Tell,R.(2008)"Supplemental Report on An Analysis of Radiofrequency Fields Associated with Operation of the
PG&E Smart Meter Program Upgrade System,"Prepared for Pacific Gas &Electric Company,Richard Tell
Associates,Inc.,October 27.
http://www.pge.com/includes/docs/pdfs/shared/edusafety/systemworks/rfsafety/rffields supplemental report
2008.pdf)
8
grid is fully functional the smart meters would be expected to be transmittingmuch more than
once every four hours,providing data in near real-time,which will result in a much higher duty
cycle.For purposes of this report we include a hypothetical scenario where the smart meter is
transmitting50 percent of the time (i.e.,transmittinghalf the time and receiving half the time).
Even in this 50%duty cycle situation the power output would be well below the FCC limits.
Smart meters are designed to transmit data to a utility access point that is usually 25 feet above
ground,on utility or light poles.These access points are designed to transmit data from up to
5,000 smart meters to the utility company.Access points have a similar AMR transmitter as
smart meters,as well as an additional AirCard,which communicates with utilities and is similar
to wireless cards used in laptop computers.AirCards typicallyoperate at 0.25-1 W,in the 800-
900 MHz or 1.9 GHz range.
In some cases,data is moved throughthe mesh network,relaying the data through other
meters to the utility access point.This may occur when the topography or built environment
interferes with the transmission of data from a smart meter to the access point.In these cases,
the relaying of data may occur between one smart meter and another before the signal is sent
to the utility access point (e.g.,hops along a set of meters).Additionally,some non-meter data
relays will also exist in the system to connect some smart meters to utility access points.
Manysmart meters,including those from PG&E,also have a second transmitter that,at some
future point in time,will allow customers to enable a home access network (HAN).The HAN will
allow increased consumer monitoringof electricity use and communication among appliances
and the future smart grid.Thisfunctionality is important to achieve the full potentialof the
smart grid.This second internal transmitter,for delivery of smart meter data to the consumer,
reportedly will operate at a rated power of 0.223W,at frequencyof about 2.4 GHz (again,
similar to that of cell phones and wireless phones).The actual duty cycle of this transmitter will
depend on the design and operation of the home area network.
Why are Smart Meters Being Installed ThroughoutCalifornia?
It is anticipated,when fully operational,that smart electricity meters are a key enabling
technology for a "smart grid"that is expected to become increasingly clean,efficient,reliable,
and safe (see Figure 3)at a potential lower cost to the consumer.(Digital meters are also being
used for reading of natural gas and water consumption).Smart electrical meters allow direct
two-waycommunication between utilities and customers,which is expected to help end users
adjust their demand to price changes that reflect the condition of the electricity grid.These end
user adjustments can help to protect the overall reliability of the electricity grid,cut costs for
utility customers,and improve the operation and efficiency of the electricity grid.The smart
grid will enable grid operators to better balance electricity supply and demand in real-time,
which becomes increasingly important as more intermittent wind and solar generation
resources are added to the grid.
9
Figure 4 depicts the potential operation of a smart grid.
WAN
Figure 4.Illustration of components of the PG&E Smart Meter Program Upgrade showing the use of
radiofrequency(RF)signals for communications among electric power meters,relays,access points and,
ultimately,the company's enterprisemanagement systems.(Source Silver Spring Network')
Smart meters will also allow utilities to communicate grid conditions to customers through
price signals,so that consumers,via their HAN,can delay non-time sensitive demands (such as
clothes drying)to a time when electricityis cheapest or has the most benefit to the reliability of
the system.In some cases wireless signals interior to the structure will also be able to
automaticallyadjust the heating and ventilation systems and to adjust heat or air conditioning
units.This adaptation to price or reliability signals could reduce overall electricity costs for
customers,improve the utilization of renewable and non-renewable power plants,and cut
costs associated with adding intermittent wind and solar resources to the grid.
While such long-term value of smart meters will take years to fully realize,they are sufficiently
promising that the federal governmenthas required utilities to take steps to implement smart
s See http://www.silverspringnet.com/products/index.htmlfor component descriptions.Network
infrastructure includes the Silver Spring Access Points (APs)and Relays that forward data from endpoints across
the utility's backhaul or WAN infrastructure into the back office.
The UtilitylQ application suite incorporates both utility applications such as Advanced Metering and Outage
Detection as well as administrative programs for managing and upgrading the network.GridScape provides
management for DA communications networks.
The CustomerlQ web portal enables utilities to directly communicate usage,pricing,and recommendations to
consumers.Silver Spring works with each utility to customize the information portrayed and to import utility-
specific information such as rate schedules.
10
grid networks,including the use of smart meters.6 After review and authorization from the
California Public Utilities Commission,'utilities in California have begun to install smart meters
throughoutthe state.Some California utilities (such as Sacramento Municipal Utility District)
have received significant federal fundingfor smart meter deployment from the American
Recovery and Reinvestment Act (federal stimulus package).Many countries around the world
are actively deploying smart meters as well.Digital smart meters are generally considered to be
the fundamental technology required to enable widespread integration of information
technology (IT)into the power grid (i.e.,the smart grid).The followingtable (table 1)
summarizes some potential societal benefits expected to result from the smart grid.
Table 1:Smart Grid Benefits
Consumers Environment
1.Cost Savings Resultingfrom Energy Efficiency 1.Widespread Deployment of Renewable Energy
2.Increased Consumer Choice and Convenience (Solar,Wind,Biofuels)and Electric Vehicles
3.More Transparent,Real-TimeInformation and (EVs)
Control for Consumers 2.Reduced Need to Build More Fossil Fueled Power
plants
3.Reduced Carbon Footprint and Other Pollutants
(via Renewables,Energy Efficiency,Electric
Vehicles)
Utilities Economy
1.Reduced Cost Due to Increased Efficienciesin 1.Creates New Market for Goods and Services (i.e.,
Delivering Electricity and Reduction in New Companies,New Jobs)
Manpower to Read Meters.2.Up-skilling Workforce to be Preparedfor New
2.Improved Reliability and More Timely Outage Jobs
Response 3.Reduced Dependenceon Foreign Oil,Keeps
3.Increased Customer Satisfaction Due to Cost Dollars at Home
Savings and Self-Control
Source:California Smart Grid Center
The federal Energy Independence and Security Act of 2007 directs states to encourage utilities to initiate smart
grid programs,allows recovery of smart grid investments through utility rates,and reimburses 20%of qualifying
smart grid investments.The American Recovery and Reinvestment Act of 2009 provided$4.5 billion to develop
smart grid infrastructure in the U.S.For more information,see:Congressional Research Service (2007)"Energy
Independence and Security Act of 2007:A Summary of Major Provisions,"CRS Report for Congress,Order Code
RL34l294,December 21.(http://energy.senate.gov/public/files/RL342941.pdf)'California Public Utilities Commission decision on Application 07-12-009 (March 12,2009).Decision on Pacific Gas
and Electric Company's Proposed Upgrade to the Smartmeter Program.
11
What Health Concerns are Associated with Smart Meters?
Human health impacts from exposure to electromagnetic frequency (EMF)emissions vary
depending on the frequencyand power of the fields.Smart meters operate at low power and
in the RF portion of the electromagnetic spectrum.At these levels,RF emissions from smart
meters are unlikelyto produce thermal effects;however it is not scientifically confirmed
whether or what the non-thermal effects on living organisms,and potentially,human health
might be.These same concerns over potential impacts should apply to all other electronic
devices that operate with similar frequency and power levels,including cell phones,computers,
cordless phones,televisions,and wireless routers.Any difference in health impacts from these
devices is likely to be a result of differences in usage patterns among them.
Thermal Effects
Electromagnetic waves carry energy,and EMF absorbed by the body can increase the
temperatureof human tissue.The scientific consensus is that body temperatures must
increase at least 1°C to lead to potential biological impacts from the heat.The only scientifically
verified effect that has been shown to occur in the power and frequencyrange that smart
meters are designed to occupy is a disruption in animal feeding behavior at energy exposure
levels of 4 W/kg and with an accompanying increase in body temperatureof 1°C or more."The
exposure levels from smart meters even at close range are far below this threshold.The FCC
has set limits on power densities from electronic devices that are well below the level where
demonstrated biological impacts occur,and the limits are tens or hundreds of times higher than
likely exposure from smart meters.
Non-thermal Effects
There are emerging questions in the medical and biological fields about potential harmful
effects caused by non-thermal mechanisms of absorbed RF emissions.Complaints of health
impacts from "electromagnetic stress"have been reported,with symptoms including fatigue,
headache,and irritability.Some studies have suggested that RF absorption from mobile
phones may disrupt communication between human cells,which may lead to other negatives
impacts on human biology.1o,11 While concerns of brain cancer associated with mobile phone
usage persist,there is currentlyno definitive evidence linking cell phone usage with increased
"D'Andrea,J.A.,Adair,E.R.,and J.O.de Lorge (2003)Behavioral and cognitive effects of microwave exposure,
Bioelectromagnetics Suppl 6,539-62 (2003).
Tell,R.(2008)"Supplemental Report on An Analysis of Radiofrequency Fields Associated with Operation of the
PG&E Smart Meter Program Upgrade System,"Prepared for Pacific Gas &Electric Company,Richard Tell
Associates,Inc.,October 27.
(http://www.pge.com/includes/docs/pdfs/shared/edusafety/systemworks/rfsafety/rffields supplemental report
2008.pdf)
10 Markova,E.,Malmgren,L.,and I.Y.Belyaev (2009)Microwaves from mobile phones inhibit 53PB1focus
formation in human stem cells stronger than in differentiated cells:Possible mechanistic link to cancer risk.
Environmental Health Perspectives,doi:10.1289/ehp.0900781.
11 Nittby,H.,Grafstrom,G.,Eberhardt,J.L.,Malmgren,L.,Brun,A.,Persson B.R.R.,and L.G.Salford (2008)
Radiofrequency and Extremely Low-Frequency Electromagnetic Field Effects on the Blood-Brain Barrier
Electromagnetic Biology and Medicine,27:103-126,2008.
12
incidence of cancer.12 But due to the recent nature of the technology,impacts of long-term
exposure are not known.Ongoing scientific study is being conducted to understand non-
thermal effects from long-term exposure to mobile phones and smart meters,etc.,especially
the cumulative impact from all RF emitting devices including that of a network of smart meters
operating throughouta community.
There currentlyis no conclusive scientific evidence pointing to a non-thermal cause-and-effect
between human exposure to RF emissions and negative health impacts.For this reason,
regulators and policy makers may be prudent to call for more research while continuing to base
acceptable human RF exposure limits on currentlyproven scientific and engineering findings on
known thermal effects,rather than on general concerns or speculation about possible unknown
and as yet unproven non-thermal effects.Such questions will likely take considerable time to
resolve.The data that are available strongly suggest that if there are non-thermal effects of RF
absorption on human health,such effects are not so profound as to be easily discernable.
FCC Guidelines
In 1985,the FCC first established guidelines to limit human exposure and protect against
thermal effects of absorbed RF emissions.The guidelines were based on those from the
American National Standards Institute (ANSI)that were issued in 1982.14 In 1996,the FCC
modified its guidelines,is based on a rulemaking process that began in 1993 in response to a
1992 revision of the ANSI guidelines"'"and findings by the National Council on Radiation
Protection and Measurements (NCRP)."The 1996 guidelines are still in place today.
In its rulemaking process to set SAR and MPE limits,the FCC relied on many federal
health and safety agencies,including the U.S.Environmental Protection Agency and the
Food and Drug Administration.
12 Ahlbom,A.,Feychting,M.,Green,A.,Kheifets,L.,Savitz,D.A.,and A.J.Swerdlow (2009)Epidemiologic evidence
on mobile phones and tumor risk:a review.Epidemiology 20,639-52 (2009).
13 National Research Council (2008)Identificationof Research Needs Relating to Potential Biological or Adverse
Health Effects of Wireless Communication,The National Academies Press,Washington,D.C.
(http://www.nap.edu/catalog/12036.html)
14 American National Standards Institute (1982)"American National Standard Radio Frequency Radiation Hazard
Warning Symbol,"ANSI C95.2-1982,Institute of Electrical and Electronics Engineers,Inc.
15 FCC (1997)"Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic
Fields,"OET Bulletin 65 (Edition 97-01),Federal Communications Commission,August.
(http://www.fcc.gov/Bureaus/EngineeringTechnology/Documents/bulletins/oet65/oet65.pdf)
16 American National Standards Institute (1992)"Safety Levels with Respect to Human Exposure to Radio
Frequency Electromagnetic Fields,3 kHz to 300 GHz,"ANSI/IEEE C95.1-1992 (previously issued as IEEE C95.1-1991),
Institute of Electrical and Electronics Engineers,Inc.
17 American National Standards Institute (1992)"Recommended Practice for the Measurement of Potentially
Hazardous Electromagnetic Fields -RF and Microwave,"ANSI/IEEE C95.3-1992,Institute of Electrical and
Electronics Engineers,Inc.
18 NCRP (1986)"Biological Effects and Exposure Criteria for Radiofrequency Electromagnetic Fields,"NCRPReport
No.86 (1986),National Council on Radiation Protection Measurements.
13
While the FCC guidelines appear to provide a large factor of safety against known thermal
effects of exposure to radiofrequency,they do not necessarily protect against potential non-
thermal effects,nor do they claim to."Without additional understanding of these effects,
there is inadequate basis to develop additional guidelines at this time.
The FCC guidelines measure exposure to RF emissions in two ways.Specific absorption rate
(SAR)measures the rate of energy absorption and is measured in units of watts-per-kilogram of
body weight (W/kg).It accounts for the thermal effects on human health associated with
heating body tissue and is used as a limiting measurement for wireless devices,such as mobile
phones,that are used in close proximityto human tissue.'°The FCC limits,as well as the
underlying ANSI and NCRP limits,are based on a SAR threshold of 4 W/kg.At the time of the
FCC rulemaking,and still today,behavioral disruption in laboratory animals (including non-
human primates)at this absorption rate is the only adverse health impact that has been clearly
linked to RF at levels similar to those emitted by smart meters.This finding is supported in
scientific literature21,22 and by the World Health Organization and many health agencies inEurope.23,24The FCC limit of 1.6 W/kg provides a significant factor of safety against this
threshold.
Limits on SAR provide the basis for another measurement of exposure,maximum permissible
exposure (MPE).MPE limits average exposure over a given time period (usually 30 minutes for
general exposure)from a device and is often used for exposure to stationary devices and where
human exposure is likely to occur at a distance of more than 20 cm.It is measured in micro (10
6)WBÌÌS-per-square-centimeter (µW/cm2),and accounts for the fact that the human body
absorbs energy more efficientlyat some radiofrequencies than others.The human body
absorbs energy most efficientlyin the range of 30-300 MHz,and the corresponding MPE limits
for RF emissions in this range are consequently the most stringent.In the frequency bands
where smart meters operate,including PG&E's,namely the 902-928 MHz band and 2.4 GHz
range,the human body absorbs energy less efficiently,and the MPE limits are less restrictive.
19 The U.S.EPA confirmed this in a letter to The Electromagnetic Radiation Policy Institute,dated March 8,2002.
(http://www.emrpolicy.org/litigation/case law/docs/noi epa response.pdf)
20 FCC (2001)"Additional Information for Evaluating Compliance of Mobile and Portable Devices with FCC Limits for
Human Exposure to Radiofrequency Emissions,"Supplement C (Edition 01-01)to OET Bulletin 65 (Edition 97-01),
Federal Communications Commission,June.
(http://www.fcc.gov/Bureaus/EngineeringTechnology/Documents/bulletins/oet65/oet65c.pdf)
21 D'Andrea,J.A.,Adair,E.R.,and J.O.de Lorge (2003)Behavioral and cognitive effects of microwave exposure,
Bioelectromagnetics Suppl 6,539-62 (2003).
22 Sheppard,A.R,Swicord,M.L.,and Q.Balzano (2008)Quantitativeevaluations of mechanisms of radiofrequency
interactions with biological molecules and processes,Health Phys 95,365-96 (2008).
23 The World Health Organization has reviewed international guidelines for limiting radiofrequencyexposure and
scientific studies related to human health impacts and concludes that exposure below guideline limits don't appear
to have health consequences.(http://www.who.int/peh-emf/standards/en/)
24 COmmittee on Man and Radiation (COMAR)(2009)"Technical Information Statement:Expert reviews on
potential health effects of radiofrequency electromagnetic fields and comments on The Bioinitiative Report,"
Health Physics 97(4):348-356 (2009).
14
The FCC limits on MPE are summarized in Figure 5.25,26 At 902 MHz,appropriate for operation
of the AMR transmitter of the smart meter;the FCC limit is 601 µW/cm2.At higher frequencies,
the human body absorbs even less energy,and the threshold for the 2.4 GHz transmitter for
home area network communications is consequently higher,1000 µW/cm2.
PG&E commissioned a 2008 study by Richard Tell Associates,"Supplemental Report on An
Analysis of Radiofrequency Fields Associated with Operation of the PG&E Smart Meter Program
UpgradeSystem."In this study of PG&E's proposed smart meter network it is noted that the
FCC limits on MPE include a factor of safety,and the perceived hazardous exposure level is 50
times higher than the FCC limits."The study estimates that the highest exposure from smart
meters,if an individual were standing directly in front of and next to the meter,would be 8.8µW/cm2transmittingat 2 to 4%of the time.The study notes that this is almost 70 times less
than the FCC limit and 3,500 times less than the demonstrated hazard level.In all likelihood,
individuals will be much farther away from smart meters and likely behind them,(within a
structure)where power density will be much lower.The highest exposure from the entire
smart meter system would occur immediately adjacent to an access point.It is very unlikely
that an individual would be immediately adjacent to an access point,as they are normally
located 25 feet above the ground on a telephone or electrical pole or other structure.The peak
power density from an access point is estimated to be 24.4 µW/cm2,or about 25 times less
than the FCC limit.From the ground,exposure to power density from access points is
estimated to be 15,000 times less than the FCC limit in great part due to the distance from the
device.
The PG&E commissioned report by Richard Tell Associates is based onlyon an AMR duty cycle
of transmitting data once every four hours which results in this very low estimated peak power.
However,we are not aware of the justificationfor using averaging over a four-hour period.We
do know the FCC'"allows averaging of exposure over a designated period (30 minutes).To
truly be a smart grid the data will be transmitted at a much more frequent rate than this.In
this report we look at the worst-case scenario,a meter that is stuck in the "on"position,
constantlyrelaying,at a 100%duty cycle.Even in this 100%scenario the RF emissions would be
measurably below the FCC limits for thermal effects.
25 FCC (1997)"Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic
Fields,"OET Bulletin 65 (Edition 97-01),Federal Communications Commission,August.
(http://www.fcc.gov/Bureaus/EngineeringTechnology/Documents/bulletins/oet65/oet65.pdf)
26 FCC (1999)"Q.uestions and Answers about Biological Effects and Potential Hazards of Radiofrequency
Electromagnetic Fields,"OET Bulletin 56 (Fourth Edition),Federal Communications Commission,August.
(http://www.fcc.gov/Bureaus/EngineeringTechnology/Documents/bulletins/oet56/oet56e4.pdf)
27 Tell,R.(2008)"Supplemental Report on An Analysis of Radiofrequency Fields Associated with Operation of the
PG&E Smart Meter Program Upgrade System,"Prepared for Pacific Gas &Electric Company,Richard Tell
Associates,Inc.,October 27.
(http://www.pge.com/includes/docs/pdfs/shared/edusafety/systemworks/rfsafety/rffields supplemental report
2008.pdf)
28 http://www.fcc.gov/Bureaus/EngineeringTechnology/Documents/bulletins/oet56/oet56e4.pdf
15
Power Density (and Exposure Level)Declines Rapidly with Distance
The power density from smart meters,or other devices that emit RF,falls off dramatically with
distance.Figure 6 illustrates this affect for an example smart meter.While the estimated
maximum exposure level at 1foot from the meter with a duty cycle of 50%is 180 µW/cm2 (far
below the FCC guidelines),at a distance of about 10 feet,the power-density exposure
approaches zero.
1200
FCC Limit
1000
800
600
o
400
100%if always on
200
Max exposure from smart If on 50%Max exposure from smart meter
meter AMR transmitter at HAN transmitter at 5%duty cycle
0 5%duty cycle
0 500 1000 1500 2000 2500
Frequency(MHz)
Figure 5.FCC maximum permissible exposure limits on power density rise with frequencybecause the human
body can safely absorb more energy at higher frequencies.The estimated maximum exposure from a 1-Watt
AMR transmitter at 5%duty cycle (i.e.,72 minutes/day)and one-foot distance is 18 µW/cm",or 3%of the FCC
limit.Even if a meter malfunctioned and was stuck in the always-on transmit mode (i.e.,100%duty cycle),
exposure levels would be 60%of the FCC limit for an AMR transmitter.For a 250mW HAN transmitter at a 5%
duty cycle,the level would be .45%of the FCC limit and 9%of the FCC limit if the transmitter were on 100%.
Exposure figures derived from February 2011 Electric Power Research Institute (EPRI)field measurement study
entitled "Radio Frequency Exposure Levels from Smart Meters:A Case Study of One Model".
29 EPRI (2011)"Radio-Frequency Exposure Levels from Smart Meters:A Case Study of One Model,"Electric Power
Research Institute,February 2011.
16
180 180
160
140
120
E 100
80
60
40
20
20 1.8 0.2 0.018
0
1 3 10 30 100
Distance in Feet
Figure 6.Power density from a sample smart meter versus distance;"°1-Wattemitter at 50%duty cycle.Typical
smart meter AMR transmitter power density declines rapidlywith distance.The rapid drop of power density
with distance (inverse-squarelaw)is similar for various duty cycles and different sets of source data.
Comparison of Electromagnetic Frequencies from Smart Meters and Other Devices
Health concerns surrounding RF from smart meters are similar to those from many other
devices that we use in our daily lives,including cordless and mobile telephones,microwave
ovens,wireless routers,hair dryers,and wireless-enabled laptop computers.
In addition to slight differences in frequency and power levels,which affect human absorption
of RF from these devices,the primary difference among them is how they are used.Cell
phones,for example,are often used for many minutes at a time,several times over the course
of a day,and held directly next to one's head.
For perspective,microwave ovens operate at a similar frequencyas the HAN transmitter of
smart meters (2.45 GHz),and the U.S.Food and Drug Administration has set limits on leakage
levels that are five times higher (5,000 µW /cm')than the FCC limit for smart meters and other
so EPRI (20110)"Radio-Frequency Exposure Levels from Smart Meters;A Case Study of One Model,""Electric
Power Research Institute,February 2011.
17
devices operating at 2.4 GHz."Wireless routers and Wi-Fi equipment produce radiofrequency
fields of about 0.2 -1.0 µW /cm2.32,33,34 POOple in metropolitan areas are exposed to
radiofrequency from radio and television antennas,as well,although for most of the
population,exposure is quite low,around 0.005 µW /cm2.
5000
5000
4500
4000
3500
3000
2500
2000
1500 1000 800
1000 200
500 200 200 20
0 20 1
0.0 Maximum
Figure 7.Instantaneous Radio Frequency Power Density Levels of Common Devices (in microWatts/cm2)
About this figure:This figure was developed by the CCST project team.Quantities for different distances calculated
using Inverse Square Law.Assumes distances in far-field,where power density reduces as the square of the
distance from the source.Smart meter power scaled to obtain output for 50%duty cycle.The source for the
various starting measurements came from Electric Power Research Institute (EPRI),Radio-Frequency Exposure
Levels from Smart Meters:A Case Study of One Model (February 2011)
si FDA,"Summary of the Electronic Product Radiation Control Provisions of the Federal Food,Drug,and Cosmetic
Act,"U.S.Food and Drug Administration.(http://www.fda.gov/Radiation-
EmittingProducts/ElectronicProductRadiationcontrolProgram/LawsandRegulations/ucm118156.htm)
32 EPRI (2011)"Radio-Frequency Exposure Levels from Smart Meters;A Case Study of One Model,"Electric Power
Research Institute,February 2011.
Foster,K.R.(2007)Radiofrequency exposure from wireless LANS utilizing Wl-FFI technology.Health
Physics,Vol.92,No.3,March,pp.280-282.
34 Schmidt,G.et al.(2007)Exposure of the general public due to wireless LAN applications in public
Places,Radiation Protection Dosimetry,Vol.123,No.1,Epub June 11,pp.48-52.
as EPA (1986)The Radiofrequency Radiation Environment:Environmental Exposure Levels and RF Radiation
Emitting Sources,EPA 520/1-85-014,U.S.Environmental Protection Agency,July.
18
19
Table 2:Radio-Frequency Levelsfrom Various Sources
Source Frequency Exposure Level Distance Time Spatial
(mW/cm')Characteristic
Mobile phone 900 MHz,1800 MHz 1-5 At ear During call Highly localized
Mobile phone base 900 MHz,1800 MHz 0.000005-0.002 10s to a few Constant Relatively uniform
station thousand feet
Microwave oven 2450 MHz ~50.05-0.2 2 inches2 feet During use Localized,non-
uniform
Local area networks 2.4-5 GHz 0.0002-0.001 3 feet Constant when Localized,non-
0.000005-0.0002 nearby uniform
Radio/TV broadcast Wide spectrum 0.001(highest 1%of Far from source (in Constant Relatively uniform
population)most cases)
0.000005 (50%of
population)
Smart meter 900 MHz,2400 MHz 0.0001(250 mW,1%3feet When in proximity Localized,non-
duty cycle)during transmission uniform
0.002 (1 W,5%duty
cycle)
0.000009 (250 mW,10 feet
1%duty cycle)
0.0002 (1 W,5%
duty cycle)
Source:Electric Power Research Institute (EPRI),Radio-Frequency Exposure Levels from Smart Meters:A Case Study of One
Model (February 2011)
20
What is Duty Cycle and How Does it Relate to RF Exposure?
Duty cycle refers to the fraction of time a device is transmitting.For instance,a duty cycle of 1%means the device
transmits RF energy 1%of a given time period.One percent of the time in a day is equivalentto 14.4 minutes per
day.The duty cycle,or signal duration is an often-overlookedfactor when comparing exposures from different
kinds of devices (e.g.,mobile phones,Wi-Fi routers,smart meters,microwave ovens,FM radio/TVbroadcast
signals).
Duty cycles of various devices vary considerably.The duty cycle of AM/FM radio/TV broadcasts,are 100%;in other
words,they are transmittingcontinuously.Mobile phones usage varies widely from user to user,of course.
However,the national average use is about 450 minutes per month.This usage equates to a 1%duty cycle for the
"average"user.
From information that CCST was able to obtain we understand that the smart meter transmitter being used by
PG&E operates with a maximum power output of 1 W (watt)and within the 902-928 MHz (mega-hertz)frequency
band.Each smart meter is part of a broader "mesh"network and may act as a relay between other smart meters
and utility access points.The transmitter at each smart meter will be idle some of the time,with the percent of
time idle (not transmitting)depending on the amount and schedule of data transmissions made from each meter,
the relaying of data from other meters that an individual meter does,and the networking protocol (algorithm)that
manages control and use of the communications paths in the mesh network.
Theoretically the transmit time could increase substantially beyond today's actual operationlevel if new
applications and functionalityare added to the meter's communication module in the future.For a hypothetical
illustration (i.e.,the meter transmits half the time and receives half the time),an upper end duty cycle would be
50%,.The table below compares the effect of different duty cycles against the FCC guidelines for human exposure
limits.
Typical Smart Meter Operation Scaled Hypothetical Maximum Use Case
With Repeater Activity (i.e.,always on)
5%Duty Cycle 50%Duty Cycle
72 minutes/day 12 hours/day
3%of FCC limit 30%of FCC limit
Source data on operating duty cycles (i.e.,first column)from Electric Power Research Institute (EPRI)actual field testing of smart meters,as
reported in Radio-Frequency ExposureLevels from Smart Meters:A Case Study of One Model,February 2011.Second column hypothetical
maximum case derived through extrapolation of first column data.Both exposure levels at 1-foot distance.
In summary,the duty cycles of smart meters in typical meter-read operation and added maximum-case repeater
operation result in exposures that are 3%of the FCC exposure guidelines.Even in a hypothetical extreme and
unusual case of half-transmit and half-receive scenario the maximum exposure would be about 30%of the FCC
limit,which provides a wide safety margin from known thermal effects of RF emissions.
21
What About Exposure Levels from a Bank of Meters and from Just Behind the Wall of a Single
Meter?
In a February 2011 study Electric Power Research Institute (EPRI)field tested exposure levels
from a bank of 10 meters of 250 mW power level at one foot distance in order to simulate a
bank of smart meters located at a multifamily building,such as an apartmenthouse.The
exposure level was equivalent to 8%of the FCC standard.
In the same study EPRI measured exposure of one meter from eight inches behind the meter
panel box in order to simulate proximityon the opposite site of the meter wall.At 5%duty
cycle it yielded an exposure of only 0.03%of the FCC standard.Even at 100%duty cycle (i.e.,
always transmitting),exposure at eight inches behind the meter was 0.6%of the FCC limit.
Is the FCC Standard Sufficient to Protect Public Health?
The FCC guidelines do provide a significant factor of safety against thermal impacts the only
currentlyunderstood human health impact that occurs at the power level and within the
frequency band that smart meters use.In addition to the factor of safety built into the
guidelines,at worst,human exposure to RF from smart meter infrastructure operating at even
50%duty cycle will be significantly lower than the guidelines.While additional study is needed
to understand potential non-thermal effects of exposure to RF and effects of cumulative and
prolonged exposure to several devices emitting RF,given current scientific knowledge the FCC
guideline provides an adequate margin of safety against known RF effects.
Are Additional Technology-specific Standards Needed?
FCC guidelines protect against thermal effects of RF exposure.Many non-thermal effects have
been suggested,and additional research is needed to better understand and scientifically
validate them.
Given the scientific uncertaintyaround non-thermal effects of all RF emitting equipment,at this
time there is no clear indication of what,if any,additional standards might be needed.Neither
is there a basis from which to understand what types of standards could be helpfulor
appropriate.Without a clear understanding of the biological mechanisms at play,the costs and
benefits of additional standards for RF emitting devices including smart meters,cannot be
determined at this time.
36 EPRI (2010)"A perspective on radio-frequencyexposure associated with residential automatic meter reading
technology,"Electric Power Research Institute,February,2011.
22
Public Information and Education
It is important that consumers have clear and easily understood information about smart meter
emissions as well as readily available access to clear,factual information and education on
known effects of RF emissions at various field strengths and distances from an array of devices
commonly found in our world.
Equipped with this information,people can make knowledgeable judgments about how to
prudentlyminimize possible risks to themselves and their families by utilizing standards-
compliant devices at known safe distances.Also,people will be better able to gauge relative
field strengths of various RF sources in our everyday environment (e.g.,mobile phones,electric
blankets,clock radios,TV and radio,computers,smart meters,power lines,microwave ovens,
etc.).An ongoing regularly updated source of unbiased information on the state of scientific
research,both proven and as-yet-unproven causal effects being studied,if presented by an
independent entity,would provide consumers a credible and transparentsource from which to
obtain facts about RF in our environment.
CCST is not currentlyaware of a single website with up-to-date consumer information which we
are able to endorse as impartial.
Alternatives to Wireless?
Assembly Member Huffman has inquired about potential alternatives to wireless
communication with smart meters.There are currentlyseveral other methods of transmitting
data from some smart meters to the utility company.These methods include transmittingover
a power line or wired through phone lines,fiber-optic or coaxial cable.Each method has
tradeoffs among cost and performance (e.g.,how much data can be carried,how far,how fast).
The ability to have a transmission protocol alternative to wireless depends upon the type and
configuration of the meter used.Some existing smart meters can be hard-wired,while others
would have to be modified or replaced.The communications board plugs into a digital meter.
The current PG&E meters use a SilverSpring communications board that only supports wireless
protocol.SilverSpring or another vendor could provide an alternative communications means if
such were warranted and cost effective.The related costs of an alternative approach would
need to be factored into the decision making process related to different options.
If future research were to establish a causal relationship between RF emissions and negative
human health impacts,industries and governments worldwide may be faced with difficult
choices about practical alternatives to avoid and mitigate such effects.This would greatly
affect the widespread use of mobile phones,cordless phones,Wi-Fi devices,smart meters,
walkie-talkies,microwave ovens,and many other everyday appliances and devices emitting RF.
If such a hypothetical scenario were to occur,smart meters could conceivably be adapted to
non-wireless transmission of data.However,retrofitting millions of smart meters with hard-
wired technology could be difficult and costly.Perhaps more importantly,retrofitting smart
23
meters would not address the significantly greater challenge presented by the billions of mobile
phones in use globally.
Key Factors to consider When Evaluating Exposure to Radiofrequency from Smart Meters
1.Signal Frequency Compare to devices in the Frequency similar to mobile
900 MHz band and 2.4 GHz band phones,Wi-Fi,laptop computers,
walkie-talkies,baby monitors,
microwave ovens
2.Signal Strength Microwatts/square centimeter Meter signal strength very small
(or Power Density)(µW/cm2)COmpared to other devices listed
above
3.Distance from Signal Signal strength drops rapidly Example:
(doubling distance cuts power 1ft.-8.8 µW/cm2
density by four)3 ft.-1.0 µW/cm2
10 ft.-0.1 µW/cm2
4.Signal Duration -Extremely short amount of time -Often overlooked factor when
(2.0-5.0%,max.)comparing devices.
-No RF signal 95-98%of the time -Short duration combined with
(over23 hours/day)weak signal strength yields tiny
exposures
5.Thermal Effects -Scientific consensus on proven -FCC "margin-of-safety"limits 50
effects from heat at high RF levels times lower than hazardous
exposure level
-Typical meter operates at 70
times less than FCC limit and
3,500 times less than the
demonstrated hazard level
6.Non-thermal Effects -Inconclusive research to date Continuing research needed
-No established cause-and-effect
pointing to negative health
impacts
24
Conclusion
The CCST Project Team,after carefullyreviewing the available literature on the current state of
science on health impacts of radiofrequency from smart meters and inputfrom a wide array of
subject matter experts,concludes that:
1.The FCC standard provides a currentlyaccepted factor of safety against known
thermallyinduced health impacts of smart meters and other electronic devices in the
same range of RF emissions.Exposure levels from smart meters are well below the
thresholds for such effects.
2.There is no evidence that additional standards are needed to protect the public from
smart meters.
The topic of potential health impacts from RF exposure in general,including the small RF
exposure levels of smart meters,continues to be of concern.This report has been developed to
provide readers and consumers with factual,relevant information about the:
Scientific basis underpinning current RF limits
Need for further research into RF effects
Relative nature of RF emissions from a wide array of devices commonly used throughout
world (e.g.,cellular and cordless phones,Wi-Fi devices,laptop computers,baby
monitors,microwave ovens).
CCST encourages the ongoing development of unbiased sources of readily available and clear
facts for public information and education.A web-based repository of written reports,
frequently asked questions and answers,graphics,and video demonstrations would provide
consumers with factual,relevant information with which to better understand RF effects in our
environment.
25
Appendix A -Letters Requesting CCST
STATE CAPITOL COMMITTEESPO.BOX 942849 $y CHAIR WATER.PARKS ANDSACRAMEJTOCA9420469-0006
ANSDCORMC
RCE
DISTRICT OFFICE SUBCOMMITTEE NO.33501CIVICCENTERORIVE,SUITE 412 ON RESOURCESSANRAFAEL,CA 94903
(415)479-4920
FAX (415)479-2123 JARED HUFFMAN
ASSEMBLYMEMBER,SIXTH DISTRICT
July 30,2010
Karl Pister,Chair
Susan Hackwood,Executive Director
California Council on Science and Technology
l130 K Street,Suite 280
Sacramento,CA 95814-3965
Dear Chair Pister and Ms.Hackwood:
I am writing to request a study by the California Council on Science and Technology in response
to the many concerns and questions that have been raised by constituents in my Assembly District
including the Marin County Board of Supervisors,City of Sebastopol,City of Fairfax,and Marin
Association of Realtors relating to potential negative health effects from SmartMeters,the
electronic monitoring devices that Pacific Gas and Electric Company (PG&E)is installing
statewide to continuously measure the electricity output from each household and business.
SmartMeters are currently being installed throughout the state under the authority of the
California Public Utilities Commission(CPUC)pursuant to a series of decisions that span from
2006 through 2009.The authority for PG&E to deploy SmartMeters in its territory is embodied
in two decisions:D.06-07-027 (the initial deployment)and D.09-03-026 (the upgrade).On the
question of health effects of radiation from the devises,PG&E and CPUC maintainthat
electromagnetic fields emitted from these SmartMeters and the radio frequency power associated
with the wireless radios fall within the Federal CommunicationsCommission's (FCC)
regulations,pointing out that SmartMeters emit fewer radio frequencies than the amount
allowable for cellular telephones,microwave ovens,and wireless Internet Services.
Critics claim,among other things,that FCC standards are not sufficiently protective of public
health and do not take into account the cumulative effect of radiation exposure from a growing
number of sources and devices,includingcontinuous exposure from some sources.For example,
they cite a letter from the RadiationProtection Division of the EnvironmentalProtection Agency
(attached),they argue,..."these standards were thermally based and do not apply to chronic,
nonthermal exposure situations,...and that ...the current exposure guidelines are based on the
effects resulting from whole-body heating,not exposure of and effect on critical organs
including the brain and the eyes."Therefore,they argue the "safety"standards were not designed
to protect the public from health problems under the circumstances which the meters are being
used.
Printed on Recycled Paper
2 6
Letter to Karl Pister and Susan Hackwood
July 30,2010
Page 2
An independent,science-based study by the California Council on Science and Technology
would help policy makers and the general public resolve the debate over whether SmartMeters
present a significant risk of adverse health effects.Toward that end,I request that the Council
specifically determine whether FCC standards for SmartMeters are sufficiently protective of
public health taking into account current exposuæ levels to radiofrequency and electromagnetic
fields,and further to assess whether additional technology specific standards are needed for
SmartMeters and other devises that are commonly found in and around homes,to ensure adequate
protection from adverse health effects.
Thank you for your serious consideration of this important and time-sensitive request.Please do
not hesitate to contact me if 1 can be of assistance going forward
Sincerely,
JARED HUFFMANAssemblymember.6th ÜÎStrÑCI
27
COMMITTEES STATE CAPITOL
CHAIR.HEALTH ggggg RO.BOX 942849
ARTS,ENTERTAINMENT,SPORTS.SACRAMENTO.CA 94249-0027
TOURISM &JNTERNET MEDIA g...g (916)319-2027
ENVlRONMENTAL SAFETY &£1 (Igg(TR g (gig iggg FAX (916)319-2127
TOXIC MÄTERIALS DISTRICT OFFICESJOINTLEGISLATIVEAUDITCOMMITTE701OCEANSTREET.SUITE 318-BJUDICIARYSANTACRUZ.CA 95060LABORANDEMPLOYMENT(831)425-1503
WEBSITE:www assembly.ca gov/monning FAX (831)425-2570
WILLIAM W.MON NING 99 P^CIFIC STREET SUITE 555-D
ASSEMBLYMEMBER,TWENTY SEVENTH DISTRICT MONTEREY CA 93940
(831)649-2832
(831)649-2935
September 15,20 10 SANTA CLARA COUNTY DIRECT LINE
(408)782-0647
Karl Pister,Chair
Califomia Council on Science and Technology
1130 K Street,Suite 280
Sacramento,CA 95814-3965
Dear Chair Pister:
This letter is to formally request that I be included in the response from the California Council on
Science and Technology (CCST)regarding the health safety evaluation of the new electronic
meteringdevices,otherwise known as Smart Meters,currently being installed by Pacific Gas and
Electric Company (PG&E)which will be available by October 15,2010.
Numerous concerns and questions have been raised by PG&E customers throughout the state,as well
as local government entities such as the County of Santa Cruz,the City of Capitola,City of Santa
Cruz,City of Scotts Valley,and the City of Watsonville,relating to potential health effects of the
radio frequency (RF)emitted nom Smart Meters.
As you know,the federal Energy Independence and Security Act of 2007 required each state to
initiate a smart grid system.In response to this federal mandate,the State of California enacted
Senate Bill 17,Chapter 327,Statutes of 2009,granting the California Public Utilities Commission
(CPUC)smart grid oversight authority.While the CPUC has authorized PG&E to install their
current Smart Meter system,CPUC has not addressed the question of whether the RF emissions from
Smart Meter devices have potential health impacts.
While PG&E maintains that Smart Meters comply with the Federal Communications Commission
(FCC)safety standards,there is still public concern that the FCC standards do not suißciently protect
the public's health and do not take into account the cumulative effect of radiation exposure from the
growing number of sources and devices emitting RF.
The scientific evaluation by the California Council on Science and Technology will help to inform
both elected of¾cials and the public about the safety of PG&E's Smart Meters and I appreciate the
Council taking the time to assess this very important issue.
Thank you for your time and assistance on this issue.
Sincerely,
'lLLIAM .MO
Assembl lember,th DiStrict
WW :rog
Pnnted on Recycled Paper
28
StephanieMoulton-Peters ShawnMarshall
Ken
acrhtel MILL VALLEY 2::;."*:
Vice Mayor Councilmember
Garry Lion James C.McCann
Councilmember City Manager
September 20,2010
Karl Pister,Chair
Susan Hackwood,Executive Director
California Council on Science and Technology
1130 K Street,Suite 280
Sacramento,CA 95814-3965
Dear Chair Pistel and Ms.Hackwood:
On behalf of the Mill Valley City Council,I am writing to support Assemblymember Jared
Huffinan's request for a study by the California Council on Science and Technology (CCST)to
specifically determine whether Federal Communications Commission (FCC)standards for
PacÏfic Gas and Electric (PG&E)SmartMeters are sufficiently protective of public health.
This request is in response to the many concems and questions that have been raised by Mill
Valley residents relating to potential negative health effects from SmartMeters.Mill Valley
residents have expressed their concerns that these devices,which are regulated by the California
Public Utilities Commission (CPUC),emit levels of radiation that may be harmful to public
health,especially with consideration to the long-term and cumulative impacts of the devices.
The CPUC maintains that SmartMeters emit radiation well below the FCC-established safety
standards,and have therefore not ordered PG&E to halt the installation of the advanced metering
devices.
Critics argue that the safety standards determined by the FCC are not sufficient and specifically
not designed to protect the public from health problems under the circumstances which the
meters will be used.The FCC standards,they claim,do not take into consideration long-term
and cumulative exposures to these devices.
The City of Mill Valley City Council therefore join Assemblymember Huffman in requesting the
CCST undertake a study to specifically determine whether FCC standards for SmartMeters are
sufficiently protective of public health,taking into account current exposure levels to
radiofrequency and electromagnetic fields,and further to assess whether additional technology
1CityofMillValley,26 Corte Madera Avenue,Mill Valley,California 94941415-388-4033
29
specific standards are needed for SmartMeters and other devices that are commonly found in and
around homes,to ensure adequate protection from adverse health effects.
Thank you for your consideration.
Sincerely,
Stephanie Moulton-Peters,Mayor
City of Mill Valley
Cc:Mill Valley City Council
Assemblymember Jared Huffman
Joshua Townsend,PG&E Public Affairs Manager
Marzia Zafar,CPUC Business and Community Outreach Division Manager
2
30
Appendix B -Project Process
CCST Smart Meter Project Approach
Assembly Member Huffman (Marin)(July 30,2010 letter)and Assembly Member
Monning (Santa Cruz)(September 17,2010 letter)requested CCST's assistance in
determining if there are health safety issues regarding the new SMART meters being
installed by the utilities.In addition,the City of Mill Valley sent a letter to CCST
(September,2010)in support of Mr.Huffman's request.(Appendix A -letters)
The CCST Executive Committee appointed a Smart Meter Project Team that oversaw the
development of a response on the issue (Appendix C):
Rollin Richmond (Chair),President Humboldt State University,CSU
Jane Long,Associate Director at Large,Global Security Directorate Fellow,Center
for Global Security Research Lawrence Livermore National Laboratory
Emir Macari,Dean of Engineeringand Computer Science,California State
University,Sacramento and Director of the California Smart Grid Center
Patrick Mantey,Director,CITRIS @ Santa Cruz
Ryan McCarthy,2009 CCST Science and Technology Policy Fellow
Larry Papay,CEO,PQ.R,LLC,mgmt consulting firm
David Winickoff,Assistant Professor of Bioethics and Society,Department of
Environmental Science,Policy and Management,UC Berkeley
Paul Wright,Director,UC Center for Information Technology Research in the
Interest of Society (ClTRIS)
In addition to those on the project team,CCST approached over two dozen technical
experts to contribute their opinion to inform CCST's response.The experts were referred
from a varietyof sources and were vetted by the Smart Meter Project Team.Efforts
were made to include both biological and physical scientists and engineers to help
provide broad context and perspective to the response.Many of the experts approached
indicated they did not time to provide a written response however they provided
references to additional experts and/or literature for review.A few experts identified
were not asked to contribute due to affiliations that were felt to be a conflict of interest.
Experts were asked to provide written comment on two issues,to provide referral to
other experts,and to suggest literature that should be reviewed.Appendix D provides a
list of those experts who provided written comment.
Smart Meter Project Team members and the experts providing written technical input
completed a conflict of interest disclosure form to reveal any activities that could create
the potential perception of a conflict.
In addition to written and oral input from technical experts,CCST identified relevant
reports and other sources of information to inform the final report.This material can be
found listed in Appendix E and on a CCST website:http://ccst.us/projects/smart/.
31
Peer Review:After the draft report was vetted in great detail by the Smart Meter Project
Team,it was forwarded to the CCST Board and Council for peer review.
Public Comment:Comments on the January 2011 draft of this report were solicited from
the public.The report was posted to the CCST website to allow the general public to
easily comment.Many very thoughtful and informed comments were received.All
public comments were reviewed and taken into consideration as this final report was
completed.
32
Appendix C-Project Team
The California Council on Science and Technology adheres to the highest standards to
provide independent,objective,and respected work.Board and Council Members review
all work that bears CCST's name.In addition,CCST seeks peer review from external
technical experts.The request for rigorous peer review results in a protocol that ensures
the specific issue being addressed is done so in a targeted way with results that are clear
and sound.
In all,this report reflects the input and expertise of nearly 30 people in addition to the
project team.Reviewers include experts from academia,industry,national laboratories,
and non-profit organizations.
We wish to extend our sincere appreciation to the project team members who have
helped produce this report.Their expertise and diligence has been invaluable,both in
rigorously honing the accuracy and focus of the work and in ensuring that the
perspectives of their respective areas of expertise and institutions were taken into
account.Without the insightful feedback that these experts generously provided,this
report could not have been completed.
Rollin Richmond,Smart Meter Project Chair,CCST Board Member
President Humboldt State University,CSU
Prior to Richmond's appointmentat Humboldt State University in 2002,he had a
distinguished career as a faculty member,researcher in evolutionarybiology and
academic administrator.Richmond received a Ph.D.in genetics from the
Rockefeller University and a bachelor's degree in zoology from San Diego State
University.Dr.Richmond's career has included:Chairperson of biology at Indiana
University,founding Dean of the College of Arts and Sciences at the University of
South Florida,Provost at the State University of New York at Stony Brook,and
Provost and Professor of Zoology and Genetics at lowa State University.He was
named the sixth President of Humboldt State University in July of 2002.Dr.
Richmond is a fellow of the American Association for the Advancement of Science
and a member of Phi Beta Kappa.His research interests are in evolutionary
genetics.
Jane Long,CCST's California's Energy Future Project Co-Chair and ccsT Sr.Fellow
Associate Director at Large,GlobalSecurity Directorate Fellow,Center for Global Security
Research Lawrence Livermore National Laboratory
Dr.Long is the Principal Associate Director at Large for Lawrence Livermore
National Laboratory working on energy and climate.She is also a Fellow in the
LLNL Center for Global Strategic Research.Her current interests are in reinvention
of the energy system in light of climate change,national security issues,economic
stress,and ecological breakdown.She holds a bachelor's degree in engineering
from Brown University and Masters and Ph.D.from UC Berkeley.
33
Patrick Mantey
Director,UC Center for InformationTechnology Research in the Interest of Society (ClTRIS)
@ Santa Cruz,University of California,Santa Cruz
Mantey holds the Jack Baskin Chair in Computer Engineeringand was the
founding Dean of the Jack Baskin School of Engineering.He is now the director of
CITRISat UC Santa Cruz and of ITI,the Information Technologies Institute in the
Baskin School of Engineering.In 1984,he joined the UCSC facultyto start the
engineering programs,coming from IBM where he was a senior manager at IBM
Almaden Research.His research interests include system architecture,design,
and performance,simulation and modeling of complex systems,computer
networks and multimedia,real-time data acquisition,and control systems.
Mantey is a Fellow of the Institute of Electrical and Electronics Engineers.His
current projects at CITRISinclude the Residential Load MonitoringProject and
work on power distribution system monitoring and reliability.Mantey received
his B.S.(magna cum laude)from the University of Notre Dame,his M.S.from the
University of Wisconsin-Madison,and his Ph.D.from Stanford University,all in
electrical engineering.He is a Fellow of the Institute of Electrical and Electronics
Engineers (IEEE).
Emir José Macari
Dean of Engineering and Computer Science,California State University,Sacramento and
Director of the California Smart Grid Center
Prior to his appointmentas dean at CSU Sacramento,Macari was dean of the
College of Science,Mathematics and Technology at the University of Texas at
Brownsville.Prior to that,he served as the program director for the Centers of
Research Excellence in Science and Technology at the National Science
Foundation.From 1999-2001 he served as the Chair and Bingham C.Stewart
Distinguished Professor in the Department of Civil and Environmental Engineering
at Louisiana State University.At the Georgia Institute of Technology he taught
both engineering and public policy and at the University of Puerto Rico he was a
professor and director of Civil Infrastructure Research Center.He has also worked
as a civil engineer in private industryand has been a fellow at NASA.Macari holds
both a doctorate and a master's degree in civil engineering geomechanics from
the University of Colorado.He has a bachelor's degree in civil engineering
geomechanics from Virginia Tech University.
Larry Papay CCST Board Member
CEO,PQR,LLC,mgmt consulting firm
Papay is currentlyCEO and Principal of PO,R,LLC,a management consulting firm
specializing in managerial,financial,and technical strategies for a variety of
clients in electric power and other energy areas.His previous positions include
Sector Vice President for the Integrated Solutions Sector,SAIC;Senior Vice
President and General Manager of Bechtel Technology &Consulting;and Senior
34
Vice President at Southern California Edison.Papay received a B.S.in Physics
from Fordham University,a M.S.in Nuclear Engineeringfrom MIT,and a Sc.D.in
Nuclear Engineeringfrom MIT.He is a member of the National Academy of
Engineeringand served on its Board of Councilors from 2004-2010.He served as
CCST Council Chair from 2005 through2008,after which he was appointed to the
Board.
David E Winickoff
Associate Professor of Bioethics and Society,Department of Environmental Science,Policy
and Management,UC Berkeley
David Winickoff (JD,MA)is Associate Professor of Bioethics and Society at UC
Berkeley,where he co-directs the UC BerkeleyScience,Technology and Society
Center.Trained at Yale,Harvard Law School,and Cambridge University,he has
published over 30 articles in leading bioethics,biomedical,legal and science
studies journalssuch as The New England Journal of Medicine,the Yale Journal of
International Law,and Science,Technology &Human Values.His academic and
policy work spans topics of biotechnology,intellectual property,geo-engineering,
risk-based regulation,and human subjects research.
Paul Wright
Director,UC Center for InformationTechnology Research in the Interest of Society (ClTRIS)
As Director of CITRIS Wright oversees projects on large societal problems such as
energy and the environment;IT for healthcare;and intelligentinfrastructures
such as:public safety,water management and sustainability.Wright is a professor
in the mechanical engineering department,and holds the A.Martin Berlin Chair.
He is also a co-director of the Berkeley ManufacturingInstitute (BMI)and co-
director of the Berkeley Wireless Research Center (BWRC).Born in London,he
obtained his degrees from the University of Birmingham,England and came to
the United States in 1979 followingappointments at the University of Auckland,
New Zealand and Cambridge University England.He is also a member of the
National Academy of Engineering.
Ryan McCarthy
Science and TechnologyPolicy Fellow,California Council on Science and Technology
McCarthy recently completed the CCST Science and Technology Policy Fellowship
in the office of California Assembly Member Wilmer Amina Carter,where he
advised on issues associated with energy,utilities,and the environment,among
others.McCarthy holds a master and doctorate degree in civil and environmental
engineering from UC Davis,and a bachelor's degree in structural engineering from
UC San Diego.His expertise lies in transportationand energy systems analysis,
specifically regarding the electricity grid in California and impacts of electric
vehicles on energy use and emissions in the state.
35
Appendix D -Written Submission Authors
Written Input Received from:
Physical Sciences/Engineers
Kenneth Foster,Professor,Department of Bioengineering,University of Pennsylvania
Rob Kavet,Physiologist/Engineer,Electric Power Research Institute (EPRI)
Biologists/medical
De-Kun Li,MD,Ph.D.,Senior Reproductive and Perinatal Epidemiologist,Division of
Research,Kaiser Foundation Research Institute,Kaiser Permanente
Asher Sheppard,Ph.D.,Asher Sheppard Consulting,trained in physics,environmental
medicine,and neuroscience
Magda Havas,B.Sc.,Ph.D.,Environmental &Resource Studies,Trent University,
Peterborough,Canada
Cindy Sage,MA,Department of Oncology,University Hospital,Orebro,Sweden and Co-
Editor,Biolnitiative Report
36
Appendix E -Additional Materials Consulted
All sources can be accessed throughthe CCST website at http://ccst.us/projects/smart/
American Academy of Pediatrics
The Sensitivity of Children to Electromagnetic Fields American Academy of
Pediatrics (August 3,2005)
Australian Radiation Protection and Nuclear Safety Agency (ARPANSA)
www.arpansa.gov.au Australian Radiation Protection and Nuclear Safety Agency
(ARPANSA)
Radiation Protection -Committee on Electromagnetic Energy Public Health Issues
(Fact Sheet)
Australian Radiation Protection and Nuclear Safety Agency (ARPANSA)(May
2010)
Radiation Protection -Mobile Telephones and Health Effects
Australian Radiation Protection and Nuclear Safety Agency (ARPANSA)(June 25,
2010)
Bushberg,Jerrold -Written Submission
Background on the Thermal vs.Non-thermal Exposure and Health Issue
Jerrold Bushberg
Documents From the California Departmentof Public Health (CDPH)
Correspondence Provided by Rick Kreutzer,California Department of Health
Rick Kreutzer,California Department of Public Health (March 10,2011)
Mixed Signals About Cellphones'Health Risks Hang Up Research
The Chronicle (September 26,2010)
Summary of the Literature:What do we Know About Cell Phones and Health?
(July 20,2010)
Brain Tumor Risk in Relation to Mobile Telephone Use:Results of the
INTERPHONEInternational Case -Control Study
Oxford University Press (March 8,2010)
Mobile Phones and Health
U.K.Department of Health
Late Lessons from Early Warnings:Towards Realism and Precaution with EMF?
David Gee,European Environment Agency,(January 30,2009)
Statement of Finnish Radiation and Nuclear Safety Authority (STUK)Concerning
Mobile Phones and Health
Radiation and Nuclear Safety Authority -STUK (January 7,2009)
Fact Sheet:Children and Safe Cell Phone Use
Toronto Public Health (July 2008)
Children and Mobile phones:The Health of the Following Generations in Danger
Russian National Committee on Non-lonizing Radiation Protection (April 14,2008)
AFSSE Statement on Mobile Phones and Health
French Environmental Health and Safety Agency -AFSSE (April 16,2003)
37
Committee on Man and Radiation (COMAR)
IEEE Engineering in Medicine and Biology Society Committee on Man and
Radiation (COMAR)
COMAR Technical Information Statement the IEEE Exposure Limits for
Radiofrequency and Microwave Energy
IEEE Engineering in Medicine and Biology Magazine (April 2005)
Commonwealth Club of California
Commonwealth Club of California -The Health Effects of Electromagnetic Fields
(Video)(November 18,2010)
Electric Power Research Institute (EPRI)
emf.epri.com EMF/RF Program at EPRI
Radio-Frequency Exposure Levels from Smart Meters:A Case Study of One Model
Electric Power Research Institute (EPRI)(February 2011)Final Report
Radio-Frequency Exposure Levels from SmartMeters Draft
Electric Power Research Institute (November 2010)Draft Report -accessed via
the Internet December 2010
Perspective on Radio-Frequency Exposure Associated With Residential Automatic
Meter Reading Technology
Electric Power Research Institute (EPRI)(February 22,2010)
Testing and Performance Assessment for Field Applications of Advanced Meters
Electric Power Research Institute (EPRI)(December 4,2009)
Overview of Personal Radio Frequency Communication Technologies
Electric Power Research Institute (EPRI)(September 9,2008)
Characterizingand O,uantifyingthe Societal Benefits Attributable to Smart
Metering Investments
Electric Power Research Institute (EPRI)(July 2008)
Metering Technology
Electric Power Research Institute (June 20,2008)
The Biolnitiative Working Group Report
Electric Power Research Institute (EPRI)(November 23,2007)
An Overview of Common Sources of Environmental Levels of Radio Frequency
Fields
Electric Power Research Institute (EPRI)(September 2002)
Environmental Protection Agency
United States Environmental Protection Agency's Response to Janet Newton
(March 8,2002)
United States Environmental Protection Agency's Response to Jo-Anne Basile
(September 16,2002)
Epidemiology
Prenatal and Postnatal Exposure to Cell Phone Use and Behavioral Problems in
Children
38
Epidemiology July 2008 -Volume 19 -Issue 4 -pp 523-529
European Journal of Oncology -Ramazzini Institute
Non-Thermal Effects and Mechanisms of Interaction between Electromagnetic
Fields and Living Matter
(2010)
Federal Communications Commission
Radio Frequency Safety FAO,'s
RF Safety Page
Statement Provided by Robert Weller Regarding FCC Regulations
Robert D.Weller,Chief,Technical Analysis Branch,Office of Engineeringand
Technology,Federal Communications Commission (February 3,2011)
Federal Communications Commission Response to Cindy Sage
(August 6,2010)
FCC Certifications
o FCC Certification for the Silver Spring Networks Devices -September 28,
2009
o FCC Certification for the Silver Spring Networks Devices -September 28,
2009
o FCC Certification for the Silver Spring Networks Devices -September 4,
2007
o FCC Certification for the Silver Spring Networks Devices -July 6,2007
Questions and Answers about Biological Effects and Potential Hazards of
Radiofrequency Electromagnetic Fields
Federal Communications Commission Office of Engineering&Technology (August
1999)
EvaluatingCompliance with FCC Guidelinesfor Human Exposure to
Radiofrequency Electromagnetic Fields
Federal Communications Commission Office of Engineering&Technology (August
1997)
Food and Drug Administration
No Evidence Linking Cell Phone Use to Risk of Brain Tumors
U.S.Food and Drug Administration (May 2010)
Health Protection Agency
Wi-Fi
Health Protection Agency (Last reviewed:October 26,2009)
Cordless Telephones -Digital Enhanced Cordless Telecommunications (DECT)and
other Cordless Phones
Health Protection Agency (Last reviewed:September 4,2008)
International Commission on Non-lonizingRadiation Protection (ICNIRP)
www.icnirp.deInternational Commission on Non-lonizing Radiation Protection
(ICNIRP)
39
International Commission on Non-lonizing Radiation Protection (ICNIRP)on the
InterphonePublication
International Commission on Non-lonizing Radiation Protection (May 18,2010)
ICNIRPStatement on the "Guidelines for Limiting Exposure to Time-Varying
Electric,Magnetic,and Electromagnetic Fields (up to 300 GHz)"
International Commission on Non-lonizing Radiation Protection (September 2009)
Epidemiologic Evidence on Mobile Phones and Tumor Risk
International Commission on Non-lonizing Radiation Protection (September 2009)
Exposure to High Frequency Electromagnetic Fields,Biological Effects and Health
Consequences (100 kHz -300 GHz)
International Commission on Non-lonizing Radiation Protection (2009)
National Academies Press
Identification of Research Needs Relating to Potential Biological or Adverse Health
Effects of Wireless Communication
National Academies Press (2008)
An Assessment of Potential Health Effects from Exposure to PAVE PAWS Low-
Level Phased-Array Radiofrequency Energy (9.9MB PDF)
National Academies Press (2005)
National Cancer Institute
Cell Phones and Cancer Risk (Fact Sheet)
National Cancer Institute
Cell Phones and Brain Cancer:What We Know (and Don't Know)
National Cancer Institute (September 23,2008)
National Institute of Environmental Health Sciences
Electric and Magnetic Fields
National Institute of Environmental Health Sciences
Neutra,Raymond -Materials Submitted
www.ehib.org/emfThe California Electric and Magnetic Fields (EMF)Program
Should the World Health Organization (WHO)Apply the Precautionary Principal to
Low and High Frequency Electromagnetic Fields?
Raymond Richard Neutra
PG&E
Understanding Radio Frequency (RF)
PG&E
Supplemental Report on An Analysis of Radiofrequency Fields Associated with
Operation of PG&E SmartMeter Program Upgrade System
Richard A.Tell,Richard Tell Associates,Inc.(October 27,2008)
Smart Grid:Utility Challenges in the 21st Century (7.4MB PDF)
Andrew Tang,Smart Energy Web,Pacific Gas and Electric Company (September
18,2009)
Summary Discussion of RF Fields and the PG&E SmartMeter System
40
Richard A.Tell,Richard Tell Associates,Inc.(2005 Report and 2008 Supplemental
Report)
Analysis of RF Fields Associated with Operation of PG&E Automatic Meter
Reading Systems
Richard A.Tell,Richard Tell Associates,Inc.and J.Michael Silva,P.E.Enertech
Consultants (April 5,2005)
Society for Risk Analysis
Risk Governance for Mobile Phones,Power Lines and Other EMF Technologies
Society for Risk Analysis (2010)
Swedish State Radiation Protection Authority(SSI)
The Nordic Radiation Safety Authorities See no Need to Reduce Public Exposure
Generated by Mobile Bas Stations and Wireless Networks
Swedish State Radiation Protection Authority (SSI)(2009)
Universityof Ottawa
Wireless Communication and Health -Electromagnetic Energy and
Radiofrequency Radiation FAO,'s
University of Ottawa,RFcom
World Health Organization
Database of Worldwide EMF Standards
WHO -Electromagnetic Fields
Electromagnetic Fields and Public Health -Base Stations and Wireless Networks
(Fact Sheet N°304)
World Health Organization (May 2006)
Electromagnetic Fields and Public Health -Electromagnetic Hypersensitivity (Fact
Sheet N°296)
World Health Organization (December 2005)
Electromagnetic Fields and Public Health -Mobile phones (Fact Sheet N°193)
World Health Organization (May 2010)
Unsolicited Submissions
Documents Provided by Alexander Blink,Executive Director of the DE-Toxics
Institute,Fairfax CA
o Points and Sources Submitted for Consideration by Alexander Blink 2
o Points and Sources Submitted for Consideration by Alexander Blink 1
o Public Health Implications of Wireless Technologies,Cindy Sage
o Memory and Behavior,By Henry Lai,Bioelectromagnetics Research
Laboratory,University of Washington
Sage Consulting
o Assessment of Radiofrequency Microwave Radiation Emissions from
Smart Meters
Sage Associates (January 2011)
o Cindy Sage Letter to Julius Knapp (FCC)
41
(September 22,2010)
o Response Letter to Cindy Sage from Julius Knapp (FCC)
(August 6,2010)
o Cindy Sage Letter to Edwin D.Mantiply (FCC)
(March 15,2010)
o Bioinitiative Report:A Rational for a Biologically-based Public Exposure
Standard for Electromagnetic Fields (ELF and RF)(3.1MB PDF)
o Bioinitiative Report:What is the Biolnitiative Report?
o Bioinitiative Report:Myocardial Function Improved by Electromagnetic
Field Induction of Stress Protein hsp70 (1.1MB PDF)
o Bioinitiative Report:The InterphoneBrain Tumor Study (1.6MB PDF)
Cindy Sage,Editorial Perspective
o Bioinitiative Report:Steps to the Clinic with ELF EMF (1.0MB PDF)
o Mobile Phone Base Stations -Effects on Wellbeing and Health
Pathophysiology (August 2009)
o Increased Blood-Brain Barrier Permeability in Mammalian Brain 7 Days
after Exposure to the Radiation from a GSM-900 Mobile Phone
Pathophysiology (August 2009)
o Public Health Implications of Wireless Technologies
Pathophysiology (August 2009)
o Genotoxic Effects of Radiofrequency Electromagnetic Fields
Pathophysiology (August 2009)
o Epidemiological Evidence for an Association Between Use of Wireless
Phones and Tumor Diseases
Pathophysiology (August 2009)
o Public Health Risks from Wireless Technologies:The Critical Need for
Biologically-based Public Exposure Standards for Electromagnetic Fields
(2.9MB PDF)
Biolnitiative Briefing for President-Elect Obama Transition Team
o The Biolnitiative Report:A Rationale for A Biologically-based Public
Exposure Standard for Electromagnetic Fields (ELF and RF)(3.6MB PDF)
Cindy Sage PowerPoint Presentation (November 2007)
Wilner &Associates
o SmartMeters and Existing Electromagnetic Pollution
Wilner &Associates (January 2011)-This report was not commissioned
by CCST
o Application for Modification Before the California Public Utilities
Commission (3.5MB PDF)
Other Documents
Health Canada Safety Code 6 and City of Toronto's Proposed Prudent Avoidance
Policy
(2010)
Transmitting Smart Meters Pose A Serious Threat To Public Health
42
(2010)
RF Safety and WiMax FAQ's:Addressing Concerns About Perceived Health Effects
(April 2008)
Relevant Websites
EMF -Portal
emfacts.com
emfsafetynetwork.org
lbagroup.com
NIOSH Program Portfolio Centers for Disease Control and Prevention (CDC)
Radio Frequency RF Safety and Antenna FAQs
Smart Grid Information Clearinghouse (SGIC)
stopsmartmeters.org
43
Appendix F -Glossary
Access point -A term typicallyused to describe an electronic device that provides for
wireless connectivityvia a WAN to the Internet or a particular computer facility.
Dutycycle -A measure of the percentage or fraction of time that an RF device is in
operation.A duty cycle of 100%corresponds to continuous operation (e.g.,24
hours/day).A duty cycle of 1%corresponds to a transmitter operating on average 1%of
the time (e.g.,14.4 minutes/day).
Electromagnetic field (EMF)-A composition of both an electric field and a magnetic field
that are related in a fixed way that can convey electromagnetic energy.Antennas
produce electromagnetic fields when they are used to transmit signals.
Far-field -A distance which extends from about two wavelengths distance from the
antenna to infinity,is the region in which the field acts as "normal"electromagnetic
radiation.The power of this radiation decreases as the square of distance from the
antenna.By contrast,the near-field,which is inside about one wavelength distance from
the antenna,is a region in which there are effects from the currents and charges in the
antenna,which do not behave like far-field radiation.These effects decrease in power far
more quickly with distance,than does the far-field radiation power.
Federal Communications Commission (FCC)-The Federal Communications Commission
(FCC)is an independent agency of the US Federal Government and is directly responsible
to Congress.The FCC was established by the Communications Act of 1934 and is charged
with regulating interstate and international communications by radio,television,wire,
satellite,and cable.The FCC also allocates bands of frequencies for non-government
communications services (the NTIA allocates governmentfrequencies).The guidelines for
human exposure to radio frequency electromagnetic fields as set by the FCC are
contained in the Office of Engineeringand Technology (OET)Bulletin 65,Edition 97-01
(August 1997).Additional information is contained in OET Bulletin 65 Supplement A
(radio and television broadcast stations),Supplement B (amateur radio stations),and
Supplement C (mobile and portable devices).
Gigahertz (GHz)-One billion Hertz,or one billion cycles per second,a measure of
frequency.
Hertz -The unit for expressing frequency,one Hertz (Hz)equals one cycle per second.
Maximum permissible exposure (MPE)limit.An exposure limit or guideline for RF
energy exposure published by a recognized consensus standards organization.
Megahertz (MHz)-One million Hertz,or one million cycles per second,a unit for
expressing frequency.
44
Mesh network -A network providing a means for routing data,voice and instructions
between nodes.A mesh network allows for continuous connections and reconfiguration
around broken or blocked data paths by "hopping"from node to node until the
destination is reached.
Milliwatt per square centimeter (mW/cm2)
-A measure of the power density flowing
through an area of space,one thousandth (10 3)of a watt passing througha square
centimeter.
Microwatt per square centimeter (µW/cm')-A measure of the power density flowing
through an area of space,one millionth (10-6)Of a watt passing througha square
centimeter.
Radiofrequency (RF)-The RF spectrum is formally defined in terms of frequency as
extending from 0 to 3000 GHz,the frequency range of interest is 3 kHz to 300 GHz.
Repeater unit -A device that can simultaneously receive a radio signal and retransmit
the signal.Repeater units are used to extend the range of low power transmitters in a
geographical area.
Router -An electronic computer device that is used to route and forward information,
typicallybetween various computers within a local area network or between different
local area networks.
Smart meter -A digital device for measuring consumption,such as for electricity and
natural gas,and sending the measurement to a utility company.Automated meter
reading (AMR)meters send information one-way only.Automated meter infrastructure
(AMI)meters are capable of two-waycommunications.
Specific absorption rate (SAR)-The incremental energy absorbed by a mass of a given
density.SAR is expressed in units of watts per kilogram (or milliwatts per gram,mW/g).
Transmitter -An electronic device that produces RF energy that can be transmitted by an
antenna.The transmitted energy is typicallyreferred to a radio signal or RF field.
Wide area network (WAN)-A computer network that covers a broad area such as a
whole community,town,or city.Commonly,WANs are implemented via a wireless
connection using radio signals.High-speed Internet connections can be provided to
customers by wireless WANs.
Wi-Fi -An name given to the wireless technology used in home networks,mobile
phones,and other wireless electronic devices that employ the IEEE 802.11technologies
(a standard that defines specific characteristics of wireless local area networks).
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AppendixG-CCST2011BOARDMEMBERS
KarlS.Pister,BoardChair;ChancellorEmeritus,UCSantaCruz;andDeanandRoyW.
CarlsonProfessorofEngineeringEmeritus,UCBerkeley
BruceM.Alberts,Professor,DepartmentofBiochemistry&Biophysics,UCSanFrancisco
AnnArvin,ViceProvostandDeanofResearch,LucileSalterPackardProfessorof
PediatricsandProfessorofMicrobiologyandImmunology,StanfordUniversity
WarrenJ.Baker,Emeritus,President,CaliforniaPolytechnicStateUniversity,SanLuis
Obispo
PeterCowhey,CouncilVice-ChairandDean,SchoolofInternationalRelationsandPacific
Studies,UCSanDiego
BruceB.Darling,ExecutiveVicePresident,UniversityofCalifornia
SusanHackwood,ExecutiveDirector,CaliforniaCouncilonScienceandTechnology
RandolphHall,ViceProvostforResearchAdvancement,UniversityofSouthernCalifornia
CharlesE.Harper,ExecutiveChairman,SierraMonolithics,Inc.
MiriamE.John,CouncilChairandEmeritusVicePresident,SandiaNationalLaboratories,
California
MoryGharib,ViceProvost,CaliforniaInstituteofTechnology
BruceMargon,ViceChancellorofResearch,UniversityofCalifornia,SantaCruz
TinaNova,President,CEO,andDirector,Genoptix,Inc.
LawrenceT.Papay,CEOandPrincipal,PQR,LLC
PatrickPerry,ViceChancellorofTechnology,ResearchandInformationSystems,
CaliforniaCommunityColleges
RollinRichmond,President,HumboldtStateUniversity
SamTraina,ViceChancellorofResearch,UniversityofCalifornia,Merced
46
Appendix H -CCST 2011 COUNCIL MEMBERS
Miriam E.John,Council Chair and Emeritus Vice President,Sandia National Laboratories,
California
Peter Cowhey,Council Vice Chair and Dean,School of International Relations and Pacific Studies,
UC San Diego
Wanda Austin,President and CEO,The Aerospace Corporation
Julian Betts,Professor of Economics,UC San Diego
George Blumenthal,Chancellor,UC Santa Cruz
Susan Bryant,Former Vice Chancellorfor Research,UC Irvine
Charles Elachi,Director,Jet Propulsion Laboratory
David Gollaher,President and CEO,California Healthcare Institute
Corey Goodman,Former President,Biotherapeutics and Bioinnovation Center,Pfizer
M.R.C.Greenwood,President,The University of Hawai'i System
Susan Hackwood,Executive Director,California Council on Science and Technology
Bryan Hannegan,Vice President of Environment and Renewables,Electric Power Research
Institute
Sung-Mo "Steve"Kang,Chancellor,University of California,Merced
Charles Kennedy,Vice Presidentfor Health Information Technology,Wel/Point,Inc.
Jude Laspa,Deputy Chief Operating Officer,Bechtel Group,Inc.
William Madia,Former Senior Executive Vice President of Laboratory Operations,Battelle
David W.Martin,Jr.,M.D.,Chairman &CEO,AvidBiotics Corporation
Fariborz Maseeh,Founderand Managing Principal,Picoco LLC
George H.Miller,Director,Lawrence Livermore National Laboratory
Michael Nacht,Dean,Goldman School of Public Policy,UC Berkeley
Stephen D.Rockwood,Executive Vice President,Science Applications International Corporation
Jeffrey Rudolph,President and CEO,California Science Center
Shankar Sastry,Dean,College of Engineering,University of California,Berkeley
Soroosh Sorooshian,Distinguished Professor and Director,Center for Hydrometeorology &
Remote Sensing (CHRS),UC Irvine
James L.Sweeney,Director,Precourt Institute for Energy Efficiency,and Professor of
Management Science and Engineering,Stanford University
S.Pete Worden,Director,NASA Ames Research Center
Julie Meier Wright,President and CEO,San Diego Economic Development Corporation
Kathy Yelick,Director,National Energy Research Scientific Computing Center (NERSC),Lawrence
BerkeleyNational Laboratory
47
Appendix I -Report credits
CCST Smart Meters Project Team:
Rollin Richmond (Chair),President Humboldt State University,CSU
Jane Long,Associate Director at Large,Global Security Directorate Fellow,Center for
Global Security Research Lawrence Livermore National Laboratory
Emir Macari,Dean of Engineering and Computer Science,California State University,
Sacramento and Director of the California Smart Grid Center
Patrick Mantey,Director,CITRIS @ Santa Cruz
Ryan McCarthy,2009 CCST Science and Technology Policy Fellow
Larry Papay,CEO,PQR,LLC,mgmt consulting firm
David Winickoff,Assistant Professor of Bioethics and Society,Department of
Environmental Science,Policy and Management,UC Berkeley
Paul Wright,Director,UC Center for InformationTechnologyResearch in the Interest of
Society (ClTRIS)
With Additional Assistance From:
JD Stack,Administrator,California Smart Grid Center,College of Engineering and
ComputerScience,California State University,Sacramento
CCST Executive Director:
Susan Hackwood
Project Manager:
Lora Lee Martin,Director,S&T Policy Fellows
CCST Staff:
Donna King,Executive Assistant and Accountant
Sandra Vargas-De La Torre,Program Coordinator,Layout and Design
48