HomeMy WebLinkAbout2021-09-20 SB Work Session Packet - Released SELECT BOARD MEETING
Monday, S eptember 20, 2021
C onducted by Remote P articipation*
7:00 P M
AGENDA
ITEMS FOR INDIVIDUAL CONSIDERATION
1. Select Board Work Session 7:OOpm
• Select Board Committee Membership Process
• Review Select Board Member Participation Options (Remote/In-
Person/Hybrid) for Upcoming Meetings
ADJOURN
1. Anticipated Adjournment 8:15pm
*An Act Extending C ertain C O VID-19 Measures: http s://www.mas s.gov/s ervic e-details/up dated-
guidance-on-holding-meetings-pursuant-to-the-act-extending-certain-covid-l9-measures
Me�nbe�s of the public can view the meeting webina�f�om thei�compute�o�tablet by
clicking on the following link at the time of the meeting:
https://us06web.zoom.us/j/94768890674?pwd=UVp4MWVHdDFueF JCbUl WaGNRcCtwQ T09
iP ho ne o ne-tap:
+13126266799„94768890674# or+19294362866„94768890674#
Telephone:+1 312 626 6799 or+1 929 436 2866 or+1 301 715 8592 or+1 346 248 7799 or+1 669
900 6833 or+1 253 215 8782
Webinar ID:947 6889 0674
Passcode:967533
A Summit meeting of the Select Board, Capital Expenditures Committee,Appropriation
Cominittee and School Committee will be held on Wednesday, September 22, 2021 at 7:OOpm via
remo te p artic ip atio n.
The next regularly scheduled meeting of the S elect Board will be held on Monday, S eptember 27,
2021 at 7:OOpm via remote participation.
Hea�ing Assistance Devices Available on Request ��
All agenda time and the o�de�of items a�app�ximate and � �, �,�,,,
subject to change. Recarded by LexMedia
AGENDA ITEM SUMMARY
LEXINGTON SELECT BOARD MEETING
AGENDA ITEM TITLE:
Select Board Work Session
PRESENTER: ITEM
Suzie Ba S elect Board Member& NUMBER:
�'Y�
Kat Labrecque, Management Analyst;
Board Discussion I.1
S UMMARY:
Select Board Committee Membership Process:
M s. B arry and M s. L ab rec que will review the wo rk they have d o ne to d ate o n reviewing the ap p o intment
process for Boards and Committees.
Topics to be covered include:
• Appointment proces s
• F eedback gathered to date
• T imeline to imp lement any c hanges
R eferenc e web s ites:
Town of Weston Boards & Committees
Town of Needham volunteer Opportunities
Review Select Board Member Participation Options (Remote/In-Person/Hybrid)for Upcoming
Meetings:
T he S elect B oard will review and discuss the criteria and timeline for in-person and hybrid meetings and event
attendance, including dates for re-evaluation.
SUGGESTED MOTION:
FOLLOW UP:
DATE AND APPROXIMATE TIME ON AGENDA:
9/20/2021 7:OOpm
ATTACHMENTS:
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Select Board Office Town Manager's Office
TEL:781-698-4580 TEL:781-698-4540
FAX:781-863-9468 FAX: 781-861-2921
APPLICATION FOR BOARD OR COMMITTEE MEMBERSHIP
INSTRUCTIONS
On the back you will find an application form for board or committee membership in the Town
of Lexington. Please fill in the information on the form and, if possible, attach a current resume.
If you are appointed, information from this application Will be used to contact you(in case of
meeting cancellation, etc.) and to forward committee material. Please do not offer information on
this application you would prefer we not use (i.e., your work phone number or fax numbers).
Applications will be kept on file and considered as vacancies occur. All applicants are strongly
encouraged to attend a regularly scheduled meeting of the board or committee for which they are
applying.
If you are applying to a Select Board appointed committee, return your completed application
and resume to the Select Board Office; if you are applying for a Town Manager appointed
committee, return your completed application and resume to the Town Manager's Office. Your
application can be emailed, faxed or mailed.
If you have any questions or need more information, contact either the Select Board Office at
781-698-4580 or the Town Manager's Office at 781-698-4540.
1625 MASSACHUSETTS AVENUE•LEXINGTON,MASSACHUSETTS 02420
Email:��Il.���l�,�,�,ir�,,, sll�xiiir���a�ir�ir��,. �v or��,�ir�.ir�.�,i��, �ir _Il��iii� �c�i�ir��,, a��
APPLICATION FOR APPOINTMENT
FOR BOARD/COMMITTEE MEMBERSHIP
Board/Committee of Interest: 1. 2.
3. 4.
Would you consider another Committee:
For how long should we keep your application on file?
Full Name: Nickname:
Preferred Title (please circle) Mr./Ms./Mrs./Other:
Home Addre s s: Zip:
Length of Residence in Lexington:
Occupation:
Work Address:
Phone: Home Work Fax
Cell
E-mail: Primary: Secondary:
If you currently serve on a Board or Committee, please identify:
Special Training, Interests, Qualifications:
Have you been asked by a Committee to become a member?
How did you hear about the Committee?
Please attach a current resume, if possible. Add any comments below or on a separate page.
Signature: Date:
TOWN OF LEXINGTON
APPLICATION FOR REAPPOINTMENT FOR BOARD/COMMITTEE MEMBERSHIP
Board/Committee
o f Intere st:
Full Name:
Preferred Title
(please circle):Mr./Ms./Mrs./Other
Home Address:
Length of Residence
in Lexington:
Current Occupation:
Work Address:
Phone Number(s): Home: Work:
Fax Number(s):
Email Address:
C omments:
Members of Town boards and committees, as defined by the Conflict of Interest Law, M.G.L. c.
268A, must abide by the standards of conduct as set forth by the Massachusetts State Ethics
Commission. Within 30 days of appointment, and annually thereafter, committee members must
acknowledge receipt of the Summary of the Conflicts of Interest Statute from the Town Clerk,
and thereafter must provide documentation of biennial completion of the on-line training
required by the Conflict of Interest Statute. The law places responsibility for acknowledging
receipt of the summaries, and for completing the online training on the individual. You will be
provided additional information by the Town Clerk pertaining to this law and recently enacted
education and training requirements.
Signature: Date:
G:A02:B&C's Application
VI. APPOINTMENTS AND APPROVAL OF MANAGER'S APPOINTMENTS
A. Selectmen's Appointments
1. Expiration Dates
For appointments to standing committees is September 30, or until a successor is appointed and
qualified, with the exception of the following:
• Historic Districts Commission, expiration date December 31, in accordance with Ch.
447, Acts of 1956.
• Lexington Housing Assistance Board(LexHAB), expiration date May 31, in
accordance With Chapter 521 of Acts of 1983.
• Registrars of Voters, expiration date March 31, in accordance with G.L. Ch. 51, s. 15.
• Town Celebrations Committee, expiration date June 30 (Town By-Law, Article XV)
• Election Officers between July 15 and August 15, in accordance with G.L. Ch. 54, s.
12.
2. Criteria
The Board of Selectmen Will be generally guided in its appointments by the criteria developed
by the Appointment Criteria Committee as amended (see Policy). Whenever possible, the Board
will seek variety in backgrounds, interests, ages, sex, length of residence and geographic areas of
residents, so that a true cross section of the community will be reflected. In order to attract
qualified and interested persons, vacancies will be made public as far in advance of appointment
as practicable.
3. Process
The Selectmen will publish in the local newspaper a list of the projected committee and board
openings for the coming year, and a copy of the Committee Application form which can be filled
out and returned to the Selectmen's office. The Committee Application form will also be made
available at the Selectmen's Office, Town Manager's Office and on the Town web site. A file of
applications will be maintained throughout the year by the Selectmen's Office and Town
Manager's Office, and made available to all town officials and employees who need to appoint
citizen committees or make use of citizen talents and expertise.
24
• The Selectmen's Executive Clerk will:
■ Present a list of the appointment vacancies to be filled by the Board annually.
■ Notify the Chairman of the appropriate board or committee requesting
recommendations regarding reappointment or the filling of vacancies.
• The Selectmen may meet with potential new appointees before making a final
decision on the appointment. Appointments will normally be made only when all
members of the Board are present. Nominees do not require a second. Appointments
will be made by a majority vote of the Selectmen.
• Annual appointments should be completed by September 30 or the statutory
expiration date.
• Appointments to fill an unexpired term shall promptly take place after the Board has
been formally notified by the Town Clerk that a vacancy exists.
B. Town Mana�er's Appointments with Board of Selectmen Approval
._�,
Under the -Selectmen/Town Manager Act and other applicable laws, the Board must
approve the Town Manager's appointments to: Board of Health, Commission on Disability,
Conservation Commission, Council on Aging, Historical Commission, Recreation Committee,
and Youth Commission.
1. Qualifications
• Applications for Town Manager appointments shall be submitted to the Town
Manager's Of�ce.
2. Process
• Individual Selectmen should feel free to suggest names of qualified residents to the
Town Manager for the Boards and Committees appointed by him.
• As a matter of procedure, appointments by the Town Manager shall be made in the
following manner:
■ The ToWn Manager shall notify members of the Board well in advance of the
vacancy becoming effective, or term of appointment expiration.
■ The Town Manager will publicize annual appointments and the filling of
vacancies in the same manner to be followed by the Board in its appointment
procedures. (see 2 above)
■ The Town manager Will submit nominees to the Board no later than one week
2s
prior to the regular Board meeting at which the Manager will seek Board
approval.
■ Subsequent to step c, the Board will have on the agenda at a following Board
meeting the matter of the appointment to be approved by the Board. In general,
appointments will be acted upon only when all members of the Board are present.
Approval will be by majority of the Selectmen.
■ Annual appointments shall take place no later than the expiration of a term.
■ Appointments to fill an unexpired term should take place no later than six weeks
after the Town Manager has been formally notified by the Town Clerk that a
vacancy exists.
26
BOARD OF SELECTMEN POLICY
CRITERIA FOR COMMITTEE MEMBERS'HIP
Date Approved by BOS: Signature of Chair:
August 28, 2006 �. ��%���z
People invited to serve the town by becoming members of its important non-elected
committees, boards and commissions should:
• Be people of competence, good will, and sound, obj ective judgment.
• Be drawn from a pool of applicants consisting of residents, taxpayers and
others with an interest in the Community.
• Be sensitive to the long-term as well as the immediate impact of their
decisions and recommendations.
• Be willing and able to devote the time and energy necessary to fulfill their
responsibilities.
Individuals appointed to Boards and Committees are expected to work through the Town
Manager or designee when requesting information from Town staff. All members of
Boards and Committee are expected to adhere to the public meeting laws and will not use
email or other private discussions to circumvent this statute.
Special attention should be given to townspeople of talent and dedication who are not
readily visible. The Board should make a special effort to seek out and recruit interested
individuals and should consider the creation of inechanisms to carry out such recruitment.
1. Board of Appeals Members and Associates
a. Individual
1. Shall have had significant experience and activity in town affairs
related to matters within the purview of the board of appeals as
evidenced, for example,by:
• Membership on maj or town boards such as selectmen, planning
board, conservation commission.
• Town meeting membership.
• Involvement in land-use related community activities, especially
zoning matters.
2. Shall have lived in Lexington for at least five years.
3. A member shall have been an associate member for at least two years.
4. Shall have no maj or land-holding interests in Lexington.
5. If a full member, shall not hold membership on any other maj or
boards, i.e., Planning Board, Board of Selectmen, School Committee,
Historic Districts Commission, Appropriation Committee, Capital
Expenditures Committee or Conservation Commission.
6. If a full member Who has served consecutively for the equivalent of
two full terms (10 years), or more, shall not be reappointed until after a
lapse of at least one year.
b. Collective
1. It is highly desirable that the Board of Appeals should include people
with various specialties, including especially:
• Engineering background.
• Legal training and experience.
• Environmental and/or conservationist experience.
• Architectural and/or design training.
2. Town Celebrations Committee and Subcommittee
a. Individual
1. Shall have specifically demonstrated the capacity to work well with
others.
2. Shall have specifically demonstrated organizational ability.
b. Collective
1. It is highly desirable that the town celebrations committee include
people who:
• Have specific knowledge of Lexington's history and historic
celebrations.
• Are younger citizens.
• Represent Lexington's newer residents.
• Have good working relations with the Minute Men and experience
in planning j oint observances with them.
3. Historic Districts Commission Members and Associates
a. Individual
1. Shall have demonstrated a dedication to historical heritage,to
historical preservation, to the special townscape of Lexington and to
the concept of architectural compatibility.
2. If a full member who has served consecutively for the equivalent of
two full terms (10 years) or more, shall not be reappointed until after a
lapse of at least one year.
b. Collective
1. It is highly desirable that the historic districts commission include
people who:
• Have legal training and experience.
• Have historical training or experience.
• Have training in architecture, architectural history and
aesthetics.
• Have training and/or experience in graphic design.
• Have experience in local business.
4. Trustees of Public Trusts
a. Individual
1. Shall have demonstrated a working knowledge and understanding of
the financial markets, and meet the standards of"prudent man"
provisions.
b. Collective
1. It is highly desirable that the trustees of public funds shall include
people who:
• Have legal training and experience.
• Have investment experience.
• Have an interest in and experience with the use and dispersal of
funds.
References: Policy Approved by the Board of Selectmen on August 28, 2006.
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Volunteer Non-Elected Board/Committee Members Survey
September 2021
Q1. How many volunteer non-elected Board(s)/Committee(s) do you currently serve on,
and please describe the time commitment required (i.e. # of ineetings, hours spent
preparing and attending meetings). Open Answer
Q2. How long have your served on a Board(s) or Committee(s) in Lexington?
Open Answer
Q3. How did you hear about Board/Committee opportunities in Lexington?
(Please se/ect all that apply)
• Town Website
• Town E-Newsletter
• Newspaper
• Social Media
• Current Committee Member
• Other-please specify
Q4. Do you feel reappointment to a Board(s)/Committee(s) should be automatic or
should you have to reapply? Please explain. Open Answer
Q5. Would you be in favor of term limits for volunteer Board(s)/Committee(s) members?
Yes or No
If term limits were instituted, what length do you feel would be appropriate?
(Open Answer)
Q6. Would you be in favor of term limits for Chairs of volunteer Boards(s)/
Committees(s)? Yes or No
If term limits were instituted, what length do you feel would be appropriate?
(Open Answer)
Q7. Do you feel you receive adequate training from the Town to serve on a Board or
Committee? Yes or No
If No, what additional training would be beneficial for your role or others interested
in serving on Boards/Committees? (Open Answer)
Q8. Do you feel the volunteer Board(s)/Committee(s) you serve on are representative of
the residents of Lexington? Yes or No
Q9. If you answered no to the question above, what do you think are barriers for
participation by community members? (Please select all that apply)
• Lack of awareness about the committees
• Unsure how to sign up/volunteer
• Too busy or too many competing activities
• Have childcare needs
• Mistrust or uncertainty of the appointment process
• General mistrust of government
• Transportation Challenges
• Lack of I nterest
• Feeling Unwelcome
• Other(please specify)
Q10. What do you find most rewarding about the Board(s)/Committee(s) work you are
engaged in? (Open Answer)
Q11. What do you find most challenging about the Board(s)/Committee(s) work you are
engaged in? (Open Answer)
Q12. Additional Comments/Feedback (Open Answer)
Surrounding Towns Volunteer Town Boards & Committee Survey
September 2021
Q1. How many volunteer Board/Committees does your Town have?
Please include the pertinent section of your Charter/Special Act where this may be
fou nd. (Open Answer)
Q2. How many are appointed by the Select Board? Please include the
pertinent section of your Charter/Special Act where this may be found.
(Open Answer)
Q3. How many are appointed by the Town Manager? (Open Answer)
Q4. Are applicants required to attend meetings of the Board/Committee
they are looking to join before appointment? Yes or No
If Yes, is there a certain number of ineetings they must attend?
Q5. Does the appointing authority consider input from Board/Committee
Chairs on applicants prior to appointment? Yes or No
Q6. Does your Town interview candidates who apply for volunteer
Boards/Committees? Yes or No
Q7. If you responded yes to the question above, who interviews the
candidates?
• Individual Select Board Members
• Full Select Board in Open Session
• Town Staff
• Committee Chair
• Town Manager
• Other(please specify)
Q8. In your community, do you have term limits for Board/Committee
Chairs? Yes or No
If Yes, please explain (Open Answer)
Q9. Do you offer any in person or online training or mentoring for members
of volunteer Boards/Committees in your Town? Yes or No
If Yes, please indicate what type and how it is delivered (in person or online)
(Open Answer)
Q10. Does your Town have a set policy/timeline for reviewing/updating
volunteer Board/Committee Charges? Yes or No
If Yes, please explain (Open Answer)
Q11. Does your Town have any issues filling vacancies on volunteer
Boards/Committees? Yes or No
If yes, is there anything being done to address it? (Open Answer)
Q12. How does your Town advertise openings on volunteer
Boards/Committees? (Open Answer)
Q13. Do your volunteer Boards/Committees have a dedicated liaison from
the Select Board? Yes of No
If Yes, please describe the role of the Select Board Liaison.
Q14. Has your Town gone on a "Committee Diet" (i.e. worked or working on
reducing/streamlining the number of volunteer Boards/Committees)? Yes or No
If Yes, Please explain
Q15. Name of Town completing the Survey. (Open Answer)
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Er�vironm�n�al Heatth��ngineering� Inc.
1�0111lells Avenue,�uite 204
Newt�n,MA 02459
� _ TE�.$�0-825-5343
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7$1-247•430�
FAX 7'8�1-247•4305
wwr�voehein�.com
January 19, 2421
Mr. Micha�l �ronin
Director
I�►epartment of Pubilc Facili�ies
Town o�`Lexington
201 Bedford�treet
Lexi�gtan, ��IA Q2420
�tE: CC�VID-19 HVAC Assessrnen�fior Tawn of Lexingtc�r� Buildir�gs {EH&E 24211}
Dear 1Vir. �ronin:
Environmen�al Healtih& Engineering, Inc. (EH&E}provides this report to�he Ta�vn af
Lexingtan's Depar�ment of 1'ublic Facilities (Lexington} describ�ng th�heating, �entilating, and
air-canditianing (HVA�} ass�ssmen�performed by EH&E at the nine public buildings in
Lexington, l��Iassachusetts. EHc'�E's assessment was conducted at the request of Lex�ngton a�.d
included a review of ventilatian systern perfor�nance as it relates to published guidance an
occup►ying buildings during the CCJVID-19 pandemic.
EH&E's assessrnent included: 1) inspection af I�VAC systems�o identify perfar�nance related
items assacia�ed vvith venti�ation and air filtration, and 2} an-si�e measurement and reparting of
p►rimary HV�A� system a�rflaw and space ventilatian rates. This repart summarizes�he averall
�nd�ngs of the ass�ssment and on-site measurement activlt�es perfor�ned by EHB�E. These
�ndings are documented i� Appendices B—D. Please note tha�this report is subject to the
limitations provided in Appendix A.
BACKGRt�UNp A�JD SU�'Pt�RT ACTIVITIES
Since August 2�}2�, E�&E has supported Lexingtan with the assessment of H''�AC sys�ems
serving the Tov�n of Lexington Public Buildings. These ass�ssrnen�s focused on revi�w of�he
airside compan�nts and fa►llowed the recommendations for system performanc� from the L.T.S.
�enters far I�isease Control and Prevention and the Ar��erican �ociety of I�eating, lZefrigerating
and�.ir-�onditianing Engln�ers �ASH�;.AE} related�a aperation of HVA� system� in buildings
to help reduce the spread af SAR.-CoV-2. The H�TAC system ass�ssm�nt and perfo:rmance
rneasuremer�ts performed b�EK&E includ�d the following elements.
Envirc�nmental Health&Engineering,Inc. � 24211 � www.eheinc.com �
1. Airside Mechar�ical �►ystems Assessment: EH&E vrsually inspected a11 primary air
handling sy�tems serving the Buiidings to document the condition and operatian af 1���
companents including autdaor aly damper operation and position, air�lter condition and
rating, and fan system opera�ion.
2. Air Handling LJni�Airflaw Verificatian Measurements: E�&E made airflow
measuremen�s on all pri�ary air handing systems at the Buildings to document total air
�upply ar�d autdaar air suppl�to the zones served.
3. Assessment of Target Air E�change Rates in�ccupied Spaces: EHB�E made air�ovv
m.easurements in 2�°�0 of the municlpal spaces to dacument ven�ilation rat�s in terrns af air
changes per hour and to dacument autdoor alr ventilatian rates r�lative to�.��IR�A.E Standard
f2.1..1
E�B�E assessed systems in the fo�lawing buildings:
Cary Memorial Building
�ary Memorial Library
�ammunity Center
Palice Department
Public Service/Administrative Building
Tawr�C�ffice Buildir�g
Visitor�enter
�1Vestvievc� �emetery
1�3 Bedford �treet
AIRSIDE HVAC �YSTEM INSPECTI �N
�H&E perfor�ned visual inspec�ions af the primary air ha�nd�ir�g systems serving the Buildings to
document s�atus of compan�r�ts and to verify praper functlan. P'rimary inspection elements
included:
� {Jutdoor air dampers and ather damper linkages are fully connected and operational and
praviding an appropriate minimur�c�percentage af outdoar air.
+� Fan belt�s} are appropriately tensioned to ensure full airflow is provided to space(s).
* Heating and caoling co�l valves and valve actuators are connected and aperational.
•► Air f�Iters are in good conditian vc��th no evidence o�`�lter bypass.
• Air fil�ers have a l��Iinimum Ef�ciency Reporting Value (MERV�of 13 or greater.
1 A�HRAE Sta�.dard 62.1-2{�19. 2019 I�'entilation.faY.�4cceptable Indoar.�tir Quality, Atlanta, C3A:
American Saciety af Hea�ing,Refrigerating,and Air-�andi�ioning Engineers,Inc.
Environmen�al Nealth&�ngineering,Inc. � 24211 ( v�rww.eheinc.com �
EI�&E document�d the findings of thi� assessment in an Actian Lis�pravid�d ta Lexington.
Items on the Action List were prioritized as follo�ays: Priarity 1 �ven��lation, �ltration, airflaw
�ssue), Priority 2 (nan-ventllation, system or component performance issue}, Priority 3 (non-
ventilation, controls relat�d perfarmance issue), Pr�ority 4�recammendat�on�. This Action Lis�,
titled,.Post CC7T�ID-19 Building Reentr�y�.ssessment Ac�ion�,ist, is provided in Appendix B for
reference and includes the follo�v-up activi�ies implement�d b�Lexlr�gton.
1�.total of�3 ite�r�s�were docurnented.Ninete�n (19}of these items were ider�ti�ed as Priarity 1
actior� items �issues contribut�ng to paor ventilation, filtration, and/ar airflow iri th�Buildings,
v�hich requir��r�r�mediate attention). Th�se Priarity 1 items vvere issues regarding outdoar air
flow or filtration of building air(e.g., filters in place belaw MER.V--13 rating an equipment that
handles recirculated alr, fan not running, or inaperable autdoor air damper) and requ�red
immediat�attention to help reduce the risk�of transmissian af C(�VII�►-19 in occupled spaces. +Of
the Priority 1 items, a11 were verified as car�r�plete by�H&�ar canfirmed com.plete by
Lexingtan.
AIRSID� HVAC AIF�FLC7W I�EA�UF�EMENTS
The primary air handling systems +�peratzng throughout the Buildings include central air handling
units (AH�..Ts}, raof top air handling units �RTTJs}, and energy recover�units (E�.LJs}. A�I�..Js and
RTUs ar�typically de�ign�d a.s "r�nixed air" sy�tems, meaning they sup�ply a combination of
outdoar air and air recirculated fram the accupied space. These units are genera�ly siz�d ta m�et
ou�doc�r air ventilatio�loads and the heatingicaoling loads for�he spaces served. ERIJs typicall�
provid� 1 Cf�°�o autdoor air a�d are sized to meet th�outdoor air ventilatian laads, wi�h zone
heating and cooling loads pravided l�y an al�ernate means.
A tally of the primary air handling sys�ems for the Buildings is prov�ded in T�.ble 1. As shov�rn in
Tabl� 1,the Public Bu�ldings are s�rved by �3 mlxed air systems and 11 ERUs. �upply and
outdoor airflovv m�asur�ments performed b�E�&E on these systems are provided in Appendix�.
Table'I Number of Primary A�r Handling�ystems by Type Serving Lexingfic�n Public Building�
Bu�ldin Mixed�ir AHUs Ener Re�ov���
Ca Memarial Buildin 2 3
Ca Memarial Libra 2 —
Cammunit Center — 4
Palice De arkment 3 _
Public 5ervic�/Admin Buildin 2 2
Town t�ffice Buildin 2 1
Visi�o�-Cenfer — �
Westview Ceme�e � .-
173 Bedford 1 _
Tc�t�l 13 11
Environmental N�alth&Engin�ering,Inc. ( 242'i 1 � wu�rw.eheinc.cam 3
C1UTD�Jl7R AND TC�TAL AIR EXCHANGE RATES
Twa targ�t ventilatian rates w�re established b�Le�ington for occupi�d spac�s wi�hln the
Buildings. First, an autdoor air ventilation ra�te compllant with A�HRAE S�andard�2.1 �was
targeted to assess autdoor air venti�atian. In addition, a total "clean air"d�livery air e�change
rate of at leas�three air changes per hour(AC�}was targeted by Lexington, where"clean air"in
this context is defined as the sum of: 1)outdaor�.ir(i,e., ventilatian�, and 2� 85% of indoor air
recirculated through filters with a MERV rating of 13.
EI�&E deter�nined outdaor air and to�al clean air delivery a1r exchange rates in 25% of�paces
selected at random f�r each Building. A tally of the af the number of spac�s assessed at the
Buildings is prov�ded in Table 2.
Table 2 Breakdown of Space Air Exchange Ra�e Measurements in Lexington Public 8uildings
Buildin Number af S aces Measured
�a Memoria!Buildin 6
Ca Memoria!�.ibra 11
Communit Center 15
Palice De artment 11
Public ServicelAdmin Buildin 9
Town C}ffice Buildin �1
Visitar Center 4
UUestview�emete 2
173 Bedfard �
To#a� 75
As shown in Tab1e 2, E�I&E measured airflow rates xn a�atal af 75 spaces at the Lexington
Buildings. (Jutidoor air delivery rates and compliance with AS�IRAE �2.1 were calcula�ed based
or�floor area and space classi�cation. Total clean air delivery air exchange rates vv�re calculat�d
far the spac�s based on c�iling height and the tatal airflow provided by the H�T.A.0 �yst�rn,
Rooms identified b� EH&E as not m�eting the outdoor air ar A�H criteria were addressed by
Le�.ington. The resul�s af outdaar a�r and air exchange rate measuren�ents ar�provided in
Appendi�D.
�UI��A�Y
This report sum.marizes the intent of E�Ic�E's an-site assessment activities conducted at the
Lexington Buildings. Details af the m.�asurement results are prav�ded in the attach�d report
Append�ces B—D.
Envirc�nrnental Health&Engineering,Inc. ( 24211 � www.eheinc.cc�m 4
If you have any questions or comments regarding this repart,please feel�'ree ta contact us at
1-8fJU-TALK.EHE�1-8UU�825-5343}.
�incerely,
� �
����,�' .����' •
� �� �������� �� ��������� ������ �+1.r,r�"�. ,,''
John F. McCar������.�� I�,M.A., WELL AP Brian J. Baker, P.E.
Proj ect Man�ger Frincipal Engi�eer
Appendi�A Lim�tations
Appendix B Pos��O�ID-19 Building Reentry Assessment Action List
Appendix C A�r Handling Unit A�rflow Measurement Data
Appendi� I.) Alrflow l�/Ieasur�m�nt I�ata
Envira�nmental Health&Engineering,Inc. � 24211 � ��.eheinc.cam 5
���������
LIMITATIC�N�
L��ITATIC�N�
1. Enviranmen�al �Iealth&Engineering, In�.'s (EH&E} assessment descr�bed in the attached
repart number 24211, +�'C7TlIL7-19.�T1A�".�4ssessment�or�.7'own of.�exin,gton B'uildings
�hereafter"the R.epart"), was performed in accordance with generally accepted practices
employ�d by other consultants under�aking similar studies at the same tirne ar�d in the same
geographical area; and EH&E abserved that degree of care and skill generall�exercised by
such ather consultants under similar circumstances and conditlons. The abservat�a�s
described in the R.eport vcrere made under the conditians stated therein. Th� conclusions
presen�ed in the l�.eport were based solely upon the services described therein, and nat on
sci�ntific tasks or procedures beyond the scope of described services.
2. CJbservations were mad� of the site as indica�ed w�thin the Report. Where access�tca
portions of the �ite was u�.ava�lable ar limited, �HB�E renders no opinion as ta th�
condltion af that portion of the site.
3, The observations and recammendatio�s contained in the Rep►ort are based on llmited
environm�ntal sampling and visual observation and w�re arriv�d at in accordance vclith
,generally acc�pted standards of industrial hygien�prac�ice. The sampling and obs�rva�ions
canducted a��he site were limited in scope and,therefare, cannat be considered
representatzve of area� not sampled ar observed.
4. Wher�an outs�de laboratory conducted sample analyses, E�&E relied upon the data
provided and did not conduct an indep�endent e�aluatian af the reliability af thes�data.
5. The purpose o�`the F�.eport was ta assess the characteristics af the subj ect site as stated
within�he R.eport. l'�To specific attemp�t vc�as made to v�rify compliance by any party with a11
federal, sta�e, or local lavvs and regula�ions.
�������� �
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