Eustis Street Fire House: Post Occupancy Evaluation by Bergmeyer

Bergmeyer

Eustis Street Fire House Post Occupancy Evaluation / March 2015

Bergmeyer Associates, Inc.

51 Sleeper Street, Boston, MA 02210

617 542 1025 (t)

617 542 1026 (f)

www.bergmeyer.com

Eustis Street Fire House Post Occupancy Evaluation

Bergmeyer

“If you cannot measure it, you cannot improve it.”

Lord Kelvin

Bergmeyer’s commitment to sustainable design and environmental stewardship drives our desire to track energy and water use data in order to provide feedback on our existing projects and to increase the performance of future projects. Data tracking allows us to evaluate the effectiveness of the project’s design elements and sustainable strategies.

Energy and water use tracking involves monitoring, documenting, reviewing, and analyzing energy and water bills and data on a regular basis so that one can identify how these resources are used, improve efficiency, and reduce consumption and costs. It’s important to know whether a building or space is becoming more or less energy-efficient over time in order to address any performance deficiencies and realize additional savings opportunities. This analysis utilizes the WegoWise platform to compare the actual energy performance and cost of the Eustis Street Fire House to the performance and cost predicted by the energy model developed for the U.S. Green Building Council’s LEED NC 2009 rating system. The energy performance is also evaluated using the U.S. Department of Energy’s Energy Index for Commercial Buildings database. Predicted versus actual water use is also compared, and greenhouse gas emissions are tracked.

Energy and water use data have been analyzed for the entire building, and energy use has also been tracked for each tenant individually. This allows us to compare whole building use to comparable facilities and to compare one tenant to another in order to detect and address any significant differences. The Baseline Year is the first 12-month period for which we had a full set of data and is used as the basis of comparison for subsequent years. Year 2 is the 12-month period immediately following the Baseline Year. When comparing modeled energy and water predictions, it is crucial to remember that many assumptions are made during the modeling process that may not reflect the way in which the building is actually constructed and operated.

Eustis Street Fire House Post Occupancy Evaluation

BUILDING OWNER Historic Boston, Inc. ADDRESS 20 Eustis Street, Boston, MA BUILDING TYPE Renovation and Addition YEAR BUILT (ORIGINAL CONSTRUCTION) 1859 YEAR MODIFIED (RENOVATION/ADDITION) 2011 SIZE 2,395 sf NUMBER OF OCCUPANTS 7 WEEKLY HOURS 40 (Designed) 45+ (actual)

PROJECT BACKGROUND year built

1859

size

2,395

LEED score

/110

The Eustis Street Fire House was designed by architect John Roulestone Hall in 1859 and is the oldest remaining fire house structure in Boston. The Fire House originally housed a steam pumper that was hand-pulled by firefighters of Torrent Six of the Roxbury Fire Department. In 1869, soon after Roxbury merged with the City of Boston, a stable was added to the back of the building to house the horses that were used to pull hook and ladder equipment.

in serious disrepair. In 2011, after extensive renovation and the construction of an addition, the building became home to Historic Boston, Inc. (HBI), which has a 99-year lease on the property from the City of Boston. The HBI staff occupies the second floor of the building, while a tenant, Timothy Smith Network (TSN), rents the first-floor space.

SUSTAINABILITY DESIGNATION LEED Silver Certification Certified under LEED NC 2009 November 2013

The building remained in operation as a Fire House until 1919, when it became home to the local chapter of the Spanish American War Veterans. The chapter stopped using the building in the 1950s, and by the late 1980s, the building was

The Eustis Street Fire House has been listed on the National Register of Historic Places since 1974 and has been a part of the Boston Landmarks Commissionâ&#x20AC;&#x2122;s Eustis Architectural Conservation District since 1982.

Overall Score: 54/110 Sustainable Sites: 12/26 Water Efficiency: 4/10 Energy and Atmosphere: 19/35 Materials and Resources: 6/14 Indoor Environmental Quality: 9/15 Innovation in Design: 3/6 Regional Priority: 1/4

Bergmeyer

Energy Performance SITE ENERGY USE INTENSITY (EUI)

74.02 kBtu/sf/yr

baseline year

year 2

76.65 kBtu/sf/yr

The LEED energy model predicted an Energy Use Intensity (EUI) of 74.02 kBtu/ sf/yr. The actual site EUI for Year 1 (the Baseline Year) is 76.64 kBtu/sf/yr, only 3% higher than predicted by the energy model but 5% less energy per square foot than similar buildings in the New England census region (80.33 kBtu/sf/ yr).

delta

84.70 kBtu/sf/yr

10%

Ye the

Energy Use Intensity (EUI)

140 120 kBtu/sq ft/year

predicted

100 80 60 40

Ba Ye

Overall building energy use has increased for Year 2, indicating a reduction in energy efficiency relative to the Baseline Year.

Baseline Year

Year 2

2030 Target

Baseline Year

CBECS*

2030 Target

Modeled

CBECS*

LEED Baseline

Modeled

LEED Baseline

During Year 2, site EUI increased approximately 10% to 84.70 kBtu/sf/yr, and the building used 6% more energy per square foot than similar buildings in New England.

*Obtained from the U.S. Department of Energy’s Energy Index for Commercial Buildings, which uses data from the 2003 CBECS. CBECS micro data searches allow users to search common building characteristics that impact energy use. This EUI represents a search for professional offices ranging from 1,001 – 5,000 sq. ft. in the Index for Com Department of Energy’s Energy New England census region. Sample size is 16 CBECS. CBECS micro data searches allow u buildings.

*Obtained from the U.S. uses data from the 2003 building characteristics that impact energy use. This EUI represents a offices ranging from 1,001 – 5,000 sq. ft. in the New England census r buildings.

much gas as the HBI office during the Baseline Year and more than t Year 2. During Year 2, HBI office gas use decreased by approximate Gas Gas Gas Use GAS USE Year, while office gas increased Gas use has held fairly Gas steady, use increasing has held fairly by only steady, 4% tenant increasing between the byBaseline only use 4% Year between and Year theby Baseline 2,approximately from Year and 15%. Year 2, 100 100 120 Use

↑ 10%↑10% 4%

120 Use

600250

100

CBECS*

Modeled

Therms

LEED Baseline

Therms

ing by only 4% between the Baseline 200 200 Year and Year 2, from 864 therms to 897 therms. The increase was due primarily 150 150 to a 5% increase in heating degree days from 2013 to 2014.

500200

2030 Target

20 20 250 250 Gas use has 0 held fairly steady, increas0

Gas 700 Use: Year-to-Year

therms

Therms Modeled Baseline Year Therms

therms

400150

100

Year 2 gas use increased Yearslightly 2 gas use increas Baseline EUI – 76.65 Baseline kBtu/sf/yr Year EUI – 76.65Y Gas Use: Year Year-to-Year from the Baseline Yearfrom the Baseline Year Year 2 EUI – 84.70 kBtu/sf/yr Year 2 EUI – 84.70 kBtu/sff Year 2

897

40 Year-to-Year Gas Use:

LEED Baseline 2030 Target

CBECS* Year 2

864 80

Baseline Year

kBtu/sq ft/year

Gas use has held fairly steady, increasing by only 4% between the Base year 2 was delta to 897 therms. 864 therms The increase to 897 therms. due The primarily increase to a was 5% increase due primarily in heating to a 5% degree increase in heating degre 864 therms to 897 therms.pThe increase was due primarily to a 5% incr 80 days from 2013 to 2014. days from 2013 to 2014. days from 2013 to 2014. Gas Use: Owner-to-Tenant 60 60

baseline year 864 therms

↑ 4% ↑4% HBI

300

TSN

100

Baseline Year gas use Baseline –864 therms Year gas use *Obtained from the U.S. *Obtained Department fromofthe Energy’s U.S.200 Department Energy Index of Energy’s for Commercial Energy Buildings, Index for Commercial which Buildings, whic B 50 50 50 Year 2 gas use – 897 therms Year 2 gas use – 897 uses data from the 2003 uses CBECS. data from CBECS the 2003 microCBECS. data searches CBECSallow micro users datatosearches search common allow users to search commoth Y building characteristicsbuilding that impact characteristics energy use.that This impact EUI represents energy use.a search This EUI forrepresents professional a search for professiona 100 0 0 offices ranging offices – 5,000 ranging ft. in 1,001 the –05,000 England sq. census in the New England Sample size isregion. 16 Sample size is 1 Feb Marfrom Apr 1,001 May Jun Jul Feb sq. Aug Marfrom Sep Apr Oct MayNew Nov Jun Dec Jul Jan Aug ft. Sep Oct region. Nov Dec Jan census Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan 0 buildings. buildings.Month Month Month

Baseline Year

Year 2

Year 1

Year 2

Year 1

Year 2

Year 1

Energy Use Energy Use Overall building energyOverall use has building increased energy for Year use has 2, indicating increaseda for reduction Year 2, in indicating energy efficiency a reduction in energy efficienc relative to the Baselinerelative Year. to the Baseline Year. Electricity Use

Year 2 electricity use increased by 14% from the Baseline Year, from

Gas Use USE ELECTRICITY

Gas Use Gas use has held fairlyGas steady, use increasing has held fairly by only steady, 4% increasing between the byBaseline only 4% Year between and Year the Baseline 2, from Year and Year 2, baseline year year 2 delta 864 therms to 897 therms. 864 therms The increase to 897 was therms. due The primarily increase to a was 5% increase due primarily in heating to a 5% degree increase in heating degree p days from 2013 to 2014. days from 2013 to 2014. Electricity Use: Year to Year

28,471 kWh

33,161

Gas Use: Year-to-Year kWh

250

Gas Use: Year-to-Year

250

↑ 4% ↑4%

3500 3000

150 100

2500

2000

0 Feb Mar Apr May Jun

100

14%

Year 2 gas use increased Yearslightly 2 gas use increas from the Baseline Yearfrom the Baseline Year

kWh

150

Therms

Year 2 electricity use increased by 14% from the Baseline Year, from 28,471 200 kWhs 200 to 33,161 kWhs. Therms

Energy Use Energy Use Energy Use Overall building energy Overall use building increased energy for Year use 2,Intensity indicating increaseda for reduction Year22, in indicating energy a reduction in energy energy use efficiency increased 22, from energy use efficien increas Energy Usehas Intensity (EUI) Energy Usehas Overall building(EUI) energyYear use has increased forYear Year indicating reduc Analysis owner gas use found that the tenanta office Eustis Street to Firethe House Post Occupancy relative Baseline relative Year.Evaluation to the Baseline Year.of the tenant and the Baseline Year the Baseline Year relative to the Baseline Year. 140 140

Baseline Year gas use Baseline –864 therms Year gas use Year 2 gas use – 897 therms Year 2 gas use – 897 th

1500

Jul Feb Aug Mar Sep Apr Oct May Nov Jun Dec Jul Jan Aug Sep Oct Nov Dec Jan

Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct

Month

Month Year 2

Year 1

Month Year 2

Year 1

Year 2

Electricity use between the two offices is very similar, with HBI using more than the tenant office during the Baseline Year. During Year 2, increased by approximately 21% over the previous year, while HBI el approximately 10%. There was only a difference of 71 kWh between

Bergmeyer

GAS USE: OWNER-TO-TENANT COMPARISON Owner: Historic Boston, Inc.

baseline year

year 2

270

219

594

678

delta

20%

Analysis of the tenant and owner gas use found that the tenant office used more than twice as much gas as the HBI office during the Baseline Year and more than three times as much during therms therms Analysis of the tenant and owner gas use found that the tenant offi Year 2. During Year 2, HBI office gas use decreased by approximately 20% from the Baseline much gas as the HBI office during the Baseline Year and more than Year, while tenant increased 15%. year by approximately year 2 delta Tenant: Timothy Smithoffice Networkgas usebaseline Gas Use: Owner-to-Tenant 700

therms

15%

Year 2. During Year 2, HBI office gas use decreased by approxima Year, while tenant officepgas use increased by approximately 15%.

Year 2 gas use decreased for HBI but increasedGas forUse: the Owner-to-Tenant tenant

therms

700

600

Analysis of the tenant and owner gas use500 found that the tenant TSN used more than twice as much gas as the 400 owner HBI during the Baseline Year and more 300than three times as much during Year 2. During Year 2, HBI office gas use 200 decreased by approximately 20% from the Baseline Year, while TSN gas use 100 increased by approximately 15%.

600

HBI TSN

Therms

500

Tenant -↑ 15%

400 300

Baseline Year

Year 2

ELECTRICITY USE: OWNER-TO-TENANT COMPARISON

TSN

Baseline Year therms – HBI-270 200 Tenant-594 Year 100 2 therms – HBI-219 Tenant-678 0

0 Baseline Year

HBI - ↓ 20%

Year 2

Electricity Use

Electricity UseBoston, Inc. Year 2 electricity use increased by 14% from the Baseline Year, from Owner: Historic baseline year year 2 delta Year 2 electricity use increased by 14% from the Baseline Year, from 28,471 kWhs to 33,161 kWhs. p

14,979 16,616 10%

Electricity Use: Year to Year

Analysis of the tenant and owner Use: gas use found that the tenant office used more than twice as ElectricitykWh Year to Year kWh much gas as the HBI office during the Baseline Year and more than three times as much during Year 2 electricity use increased Year 2. During Year 2, HBI office gas use decreased by approximately 20% from the Baseline baseline year year 2 deltaYear Tenant: Timothy Smith Network from the Baseline Year, while tenant office gas use increased by approximately 15%. 3500

13,492 16,545↑ 14% 21% p

kWh

3000 700

Gas Use: Owner-to-Tenant kWh

kWh

30002 gas use decreased for Year Electricityfor Use: HBI but increased theOwner-to-Tenant tenant

kWh

3500

2500

HBI - ↓ 20%

kWh

Therms

600 2000 2500 use between the two offices 18000 Electricity 16000 Baseline Year electricity use – is very similar, with HBI using approxi500 1500 14000 20001,500 kWh more than TSN during mately 28,471 kWh Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct HBI 12000 the400 Baseline Year. During Year 2, TSN Year 2 electricity use – Month 33,161 HBI 10000 electricity 1500 use increased by approxiYear 1 Tenant Year 2 kWh 300 21% over TSN Novthe Decprevious Jan Feb year, Mar Apr May Jun Jul Aug Sep Oct 8000 mately while Baseline Year therms – HBI-270 Month 6000 HBI electricity use increased by approxiElectricity use between the two offices is very similar, with HBI usin 200 Year 1 Year 2 Tenant-594 mately 10%. There was only a difference 4000 more than the tenant office during the Baseline Year. During Year 2 of 71 2000 2by Year therms – HBI-219 100kWh between the two offices during increased approximately 21% over the previous year, while HBI Year 2. 0 approximately 10%. Electricity use between the two offices is very similar, with HBI using approximately kWh was only a difference of 71 kWh betwee Tenant-6781,500There 0

Tenant -↑ 15%

Baseline Year

more than the tenant office during the Baseline Year. During Year 2, tenant electricity use Baseline Year Year 2 increased by approximately 21% over the previous year, while HBI electricity use increased by approximately 10%. There was only a difference of 71 kWh between the two offices during Year 2.

Year 2

Energy Cost The energy cost increased approximately 15% from the Baseline Yea Electricity Use costs were almost three times the LEED predicted cost for the Basel Year 2 electricity use increased by 14% from the Baseline Year, from 28,471 kWhs to 33,161 times the predicted cost for kWhs. Year 2. This is most likely due to the low

0 Baseline Year

Eustis Street Fire House Post Occupancy Evaluation

ENERGY COST predicted

baseline year

1,950

5,515

Energy Cost The energy cost increased approximately 15% from the Baseline Year costs were almost three times the LEED predicted cost for the Baselin year 2 times the predicted cost for Year 2.delta This is most likely due to the lowe $ electricity rates used in the energy p model.

6,378

15%

Energy Cost $7,000

The energy cost increased approximately 15% from the Baseline Year to Year 2. Actual energy costs were almost three times the LEED predicted cost for the Baseline Year and more than three times the predicted cost for Year 2. This is most likely due to the lower-than-actual gas and electricity rates used in the energy model.

Yea the

$6,000 $5,000 $4,000 $3,000

Pre Bas Yea

$2,000 $1,000 $0 LEED Baseline

GREENHOUSE GAS (GHG) EMISSIONS baseline year

15.81 MtCO2e

Greenhouse gas emissions increased 12% between the Baseline Year and Year 2, from 15.81 MtCO2e to 18.01 MtCO2e. This is in line with the increase in overall energy use at the building.

Modeled

Year 1

Year 2

Greenhouse Gas (GHG) Emissions Greenhouse gas emissions increased 12% between the Baseline Yea MtCO2e to 18.01 MtCO2e. This is in line with the increase in overall e year 2

delta

18.01 MtCO2e

12%

Year 2 increas

Greenhouse Gas Emissions 20 18

â&#x2020;&#x2018;

16 14 MtCO2e

Year 2

12 10 8 6

Baselin Year 2

4 2 0 Median Property

Target

Year 1

Year 2

Water Performance

Potable Water Use Potable water use for both the Baseline Year and Year 2 was significantly high Water Use Reduction projection of 5,230 gallons per year. The Baseline Year than predicted at 11,521 gallons, while Year 2 usage was 47% higher than pre gallons.

Bergmeyer

Year 2 g increase

Greenhouse Gas Emissions 20 18

â&#x2020;&#x2018;

16 14 MtCO2e

12 10 8 6

Water Performance

Baseline Year 2 M

4 2 0

Median Property

Target

Year 1

Year 2

POTABLE WATER USE

5,230

baseline year

year 2

gallons

5,230 Potable water use for both the Baseline Year and Year 2 was significantly higher than the LEED Water Use Reduction projection of 5,230 gallons per year. The Baseline Year use was 55% higher than predicted at 11,521 gallons, while Year 2 usage was 47% higher than predicted at 10,631 gallons. The large disparity in actual versus predicted water use can be explained at least in part by the LEED Water Use Reduction assumptions that occupants use the toilets and lavatories three times per day, the kitchen sink once per day and that the building is occupied only 40 hours per week. Discussions with HBI and TSN indicate that these assumptions are significantly lower than actual usage patterns.

11,521

Water Performance

gallons

delta

55%

Potable Water Use Potable water use for both the Baseline Year and Year 2 was significantly highe Water Use Reduction projection of 5,230 gallons per year. The Baseline Year u than predicted at 11,521 gallons, while Year 2 usage was 47% higher than pred delta gallons. p

10.631

47%

Pota signi for b Year

Potable Water Use

14,000 12,000 10,000 Gallons

predicted water use

8,000 6,000 4,000 2,000 0 LEED Baseline

LEED Design Case

Year 1

Year 2

Pred

The large disparity in actual versus predicted water use can be explained at lea LEED Water Use Reduction assumptions that occupants use the toilets and lav per day, the kitchen sink once per day and that the building is occupied only 40 Discussions with HBI and the tenant indicate that these assumptions are signifi actual usage patterns.

Water Use Year-to-Year Water bills indicate that there was an approximately 8% decrease in the amoun

buildings.

During that time, the Boston Water and Sewer Commission was w disconnect the building from the water supply and connect them t Eustis Street Fire House Post Occupancy Evaluation Energy Use Energy Use Most likely, without the interruption in service, the amount of potab Overall building energyOverall use has building increased energy for Year use has 2, indicating increased a for reduction Yearbetween 2,Water in indicating energy aBaseline reduction in energy efficienc remained fairly consistent theefficiency Year and Year During that time, the Boston and Sewer Commission was2.w relative the Baselinerelative Year. WATER USEtoYEAR-TO-YEAR

to the Baseline Year. disconnect the building from the water supply and connect them t

baseline year

Most likely, without the interruption in service, the amount of potab

year 2 delta Gas Use Gas Use remained fairly consistent between the Baseline Year and Year 2. q Gas use has held fairlyGas steady, use increasing has held fairly by only steady, 4% increasing between the byBaseline only 4%Use: Year between and Year the Baseline 2, from Year and Year 2, Water Year-to-Year 864 therms to 897 therms. 864 therms The increase to 897 was therms. due The primarily increase to a was 5% increase due primarily in heating to a 5% degree increase in heating degree days from 2013 to 2014. days from 2013 to 2014. 1400

11,521

10,631

gallons

Therms

Use: Water bills indicate that there Gas was an ap-Year-to-Year proximately 8% decrease in the amount 250used between the Baseline 250 of water Year and Year 2. However, as seen in the 200 graph200 below, the majority of that reduction can be attributed to an enormous drop off 150in water use in June 2014.150

1200 1400 Gas Use: Year-to-Year 1200 1000 1000

Gallons Gallons

gallons

Therms

buildings.

800 800

600 600

Water Use: Year-to-Year

Year 2 gas use increased Yearslightly 2 gas use increas from the Baseline Yearfrom the Baseline Year

↑ 4% ↑4% Year 1 Year Year 1 2 Year 2

During100 that time, the Boston Water100 and 400 Sewer Commission was working in the 400 Baseline Year gas use Baseline –864 therms Year gas use area and had to disconnect the building 50 50 Year 2 gas use – 897 therms Year 2 gas use – 897 th 200 from the water supply and connect them 200 to a fire hydrant for water service. Most 0 0 likely, without the interruption in service, 0 Dec Feb Mar Apr May Jun Jul Feb Aug Mar Sep Apr Oct May Nov Jun0 Jul Jan Aug Sep Oct Nov Dec Jan the amount of potable water used would Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Month Month have remained fairly consistent between the Baseline Year and Year 2. Year 2 Year 1 Year 2 Year 1

Moving Forward

Moving Forward WEGOWISE Much of the data in this report was analyzed with WegoWise, a software application to help buildings become more efficient. By automatically integrating a broad range of energy and water data, WegoWise delivers a complete picture of utility use. The intuitive software helps building owners make smarter efficiency decisions that increase cash flow and boost asset value. More than a thousand real estate institutions have added millions to the bottom line with WegoWise. Learn more at wegowise.com.

This analysis of the energy and water use at the Eustis Street Fire data analysis that we can use to improve the operational efficiency of the This of the energy and water use at the Eustis Street Fireb surprised us was the enormous disparity in gas use between the data that we can use to improve the operational efficiency of the bo wanted to us know could possibly be causing the between variation.the o surprised waswhat the enormous disparity in gas use

wanted to know what could possibly be causing the variation. The fact that there was no gas used during the summer months in

leak in the building. We recommended that the owner make the t

The factmost that likely there behavioral was no gasissues used were duringbehind the summer monthsWe in use as the variation. whether thebuilding. setpointsWe hadrecommended been overridden it was possible the t leak in the thatasthe owner make the originally programmed. use as most likely behavioral issues were behind the variation. We whether the setpoints had been overridden as it was possible the As the building owner, Historic Boston, Inc. took the initiative to wo originally programmed. participate in the electric utility’s Direct Install program available to

average monthly demand is less than 300 kW. This free energy au As the building owner,including Historic Boston, Inc. took the to wo saving opportunities, lighting products thatinitiative had come on the buildinginopened. participate the electric utility’s Direct Install program available to

average monthly demand is less than 300 kW. This free energy au Continued tracking will help identify energy and water usecome trendson a saving opportunities, including lighting products that had any issues so that we can investigate and address them. the building opened.

Continued tracking will help identify energy and water use trends a any issues so that we can investigate and address them.

Bergmeyer

Moving Forward This analysis of the energy and water use at the Eustis Street Fire House provided us with excellent data that we can use to improve the operational efficiency of the building. The finding that most surprised us was the enormous disparity in gas use between the owner and the tenant. We wanted to know what could possibly be causing the variation. The fact that there was no gas used during the summer months indicated to us that there wasnâ&#x20AC;&#x2122;t a leak in the building. We recommended that the owner make the tenant aware of their high gas use as most likely behavioral issues were behind the variation. We suggested they explore whether the setpoints had been overridden as it was possible the system was not operating as originally programmed. As the building owner, Historic Boston, Inc. took the initiative to work with the

City of Boston and to participate in the electric utilityâ&#x20AC;&#x2122;s Direct Install program available to business customers whose average monthly demand is less than 300 kW. This free energy audit helped identify energy-saving opportunities, including lighting products that had come on the market in the years since the building opened. Continued tracking will help identify energy and water use trends and make us aware early on of any issues so that we can investigate and address them.

Eustis Street Fire House Post Occupancy Evaluation

Glossary ENERGY USE INTENSITY (EUI) EUI is an expression of a building’s energy use as a function of its size. The EUI is expressed as energy (in kBtus) per square foot per year. It is calculated by dividing the total energy consumed by the building in one year by the total gross floor area of the building. EUSTIS STREET ARCHITECTURAL CONSERVATION DISTRICT This historic district, which was established in 1981, contains sites from the earliest period of Roxbury’s history to the late 19th century. As an official Boston Landmark, the district is protected from changes that would adversely affect its historic character. GREENHOUSE GAS (GHG) EMISSIONS Consists of the carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) gases emitted into the Earth’s atmosphere as a result of all the energy consumed by the building. GHG emissions are expressed as the carbon

dioxide equivalent (CO2e), a metric used to compare the emissions from various greenhouse gases based upon their global warming potential (GWP). The CO2e for a gas is derived by multiplying the tons of the gas by the associated GWP. LEADERSHIP IN ENERGY & ENVIRONMENTAL DESIGN (LEED) A green building certification program that recognizes best-in-class building strategies and practices. To receive LEED certification, building projects satisfy prerequisites and earn points to achieve different levels of certification. NATIONAL REGISTER OF HISTORIC PLACES The official list of the Nation’s historic places worthy of preservation. Authorized by the National Historic Preservation Act of 1966, the National Park Service’s National Register of Historic Places is part of a national program to coordinate and support public and private efforts to identify, evaluate, and protect America’s historic and archeological resources.

POTABLE WATER Meets or exceeds the Environmental Protection Agency’s (EPA) drinking water quality standards and is approved for human consumption by the state or local authorities having jurisdiction. It may be supplied from wells or municipal water systems. SITE ENERGY The amount of heat and electricity consumed by a building, as reflected in utility bills. SOURCE ENERGY The total amount of raw fuel required to operate a building. It incorporates all transmission, delivery and production losses for a complete assessment of a building’s energy use.

Bergmeyer

Bergmeyer Associates, Inc.

51 Sleeper Street, Boston, MA 02210

617 542 1025 (t)

617 542 1026 (f)

www.bergmeyer.com

Eustis Street Fire House Post Occupancy Evaluation

Bergmeyer