SDN1501E ES1 Conditions Assessment.pdf

NORFOLK COUNTY CORRECTIONAL CENTER

Condition Assessment and Energy Study Report WSP Project # B1502090.000

DCAMM Project # SDN1501E ES1

DCAMM Site Code: SDN00 Final Report June 19, 2015

Prepared For:

Division of Capital Asset

Management and Maintenance

One Ashburton Place Boston, MA 02108

Executive Summary

The Division of Capital Asset Management and Maintenance (DCAMM) retained the services of WSP to investigate and analyze existing building systems at the Norfolk County Correctional Center, located in Dedham, Massachusetts. The comprehensive study involved:

■ Assessing the condition of all building equipment

■ Assessing the condition of the building envelope

■ Evaluating energy performance

■ Recommending energy conservation measures

The following reports are representative of all the findings and recommendations developed as a result of the study. The study is broken up in to five (5) different documents.

1. Building Facility Description – Overview of building operating schedule, building envelope, HVAC systems, domestic hot water system, and lighting system.

2. Building Condition Assessment Report – Non-invasive visual inspection evaluation of all

MEP/FP systems serving the property. Thermographic and moisture testing of the building foundation, exterior wall system including windows and doors, and the low-slope roofing.

3. ASHRAE Level I & II Report – Walk-through survey of the facility, utility bill analysis, energy and cost summary comparisons, low cost/no cost improvements and capital improvements.

The table below lists the contact information of the project team.

Project Team Contact Information

Name/Title Affiliation Phone Number E-mail Address

Mike Reinhardt Energy Planner

DCAMM 857-204-1234 Michael.reinhardt@state.ma.us

Stephen Randall Assistant Deputy Super Intendant

NCCC 781-760-8985 srandall@norfolksheriffma.org

Andrea Stevens

NCCC astevens@norfolksheriffma.org

Mike Shaughnessy

NCCC 781-589-3472 mshaughnessy@norfolksheriffma.org

Scott Petit Project Manager

WSP 617-210-1825 Scott.Petit@wspgroup.com

Kevin Spates Cx & Energy Engineer

WSP 617-210-1739 Kevin.Spates@wspgroup.com

David Venturoso Cx & Energy Engineer

WSP 617-210-1804 David.Venturoso@wspgroup.com

Anurag Goel Cx & Energy Engineer

WSP 617-210-1740 Anurag.Goel@wspgroup.com mailto:Scott.Petit@wspgroup.com

DRAFT Building Facility Description Report

B1502090.000

June 19, 2015

Prepared For:

DCAMM

One Ashburton Place, 15 th

Floor

May 15, 2015

DRAFT Building Facility Description Report

Table of Contents

1. Baseline Facility Description

1.1 General Information

1.2 HVAC Systems

1.2.1 Air Handling Systems

1.2.2 Terminal Units

1.2.3 Return and Exhaust Fans

1.2.4 Chilled Water System

1.2.5 Condenser Water System

1.2.6 Hot Water and Glycol System:

1.3 Domestic Hot Water

1.4 Lighting and Lighting Controls System

1.4.1 Main Building

1.4.2 DAC

B1502090.000 1 | 7

1. Baseline Facility Description

1.1 General Information

The Norfolk Country Correctional Center (NCCC) is located in Dedham, MA and opened in 1993. The campus consists of two (2) buildings – a 140,000 square foot main building with 502 beds and a 12,000 square foot Dedham Alternative Center (DAC). Additionally, there is a 2,500 square foot vehicle maintenance building adjacent to the DAC. NCCC is owned by the Commonwealth of Massachusetts and operated by the Norfolk County Sheriff’s Office. The main building consists of four (4) pods connected to the central unit. There is a control center and two levels of cells at each pod. The central unit is single story and consists of a kitchen, laundry room, administrative spaces, mechanical/back of house areas, and a gym. The gym is now being used to house additional inmates. The main building is currently over occupied and there are plans to add an additional building, potentially housing 50 inmates. There are approximately 600 inmates and 100 staff members on campus.

Figure 1.1 - Campus Layout

1.2 HVAC Systems

The main building consists of four integrated “pods” connected to the central unit. One (1) air-conditioning unit (ACU) serves each of the four pods (ACU-1 through ACU-4). There are four (4) additional ACUs (ACU-5 through ACU-8) serving administrative and office spaces in the central unit. The kitchen, laundry room, and gym are served by four (4) different Heating and Ventilation (HV) units (HV-1 through HV-4). Separate computer room air-conditioning (CRAC) systems serve the computer/IT rooms, which require cooling year round.

The DAC is served by one (1) ACU (ACU-9). The vehicle maintenance building is served by various unit heaters.

1.2.1 Air Handling Systems

ACU-1 through ACU-4 – Main Building

DAC building

Vehicle Maintenance Building

Main Building

B1502090.000 2 | 7

Heating, cooling, and ventilation at the main building pods are provided by four (4) 6,700 to 12,000 CFM constant volume (CV) ACUs. Each unit consists of an outside air intake and filter, one (1) return air fan and relief air section, hot water heating coil, chilled water cooling coil, and one (1) supply fan. The hot water heating coil provides heat for hot deck operation during the winter. The chilled water cooling coil provides cooling for cold deck operation during the summer months.

ACU-5 through ACU-8

Heating, cooling, and ventilation at the main building central unit are provided by four (4) 9,500 to 11,600 CFM variable air volume (VAV) ACUs. Each unit consists of an outside air intake and filter, one (1) return air fan and relief air section, hot water heating coil, chilled water cooling coil, and one (1) supply fan. The supply fan and return fan are equipped with variable frequency drives (VFDs) that modulate the fan speed to maintain duct static pressure.

HV-1 through HV-4 – Main Building

Heating and ventilation in the main building kitchen and laundry spaces are provided by HV-1, HV-2, and HV-3.

These three (3) units are constant volume and consist of an outside air intake and filter, hot water heating coil, and supply fan.

Heating, cooling, and ventilation in the main building gym are provided by HV-4. The gym is currently being used to house approximately 70 inmates. HV-4 is consists of an outside air intake and filter, hot water heating coil, chilled water cooling coil, and a supply fan. Note that the cooling coil was added after the original construction.

AHU-1, AHU-2 and Fan Coil Units – DAC

Ventilation at the DAC is provided by two (2) constant volume air handling units (AHUs). The units consists of an outside air intake and filter, hot water heating coil, chilled water cooling coil, and supply fan. The ventilation air is delivered downstream to the corridors and fan coil units (FCUs) serving various cells and administrative spaces.

Each fan coil unit is equipped with a hot water heating coil and chilled water cooling coil.

All air handling systems are listed in Table 1.1 below:

Table 1.1 – Air Handling Units

Mark

No

AREA SERVED LOCATION

FAN DATA

MOTOR

DATA

Cooling Coil Data Heating Coil Data

WATER Water

TOTAL

CFM

MIN

OA

HP GPM PD EWT °F GPM PD EWT °F

ACU-

JAIL JAIL - MER 9,500 3,950 10 69 10 45 48 7 180

ACU-

SEG UNIT SEG - MER 6,700 2,750 8 49 10 45 34 7 180

ACU-

HOC I HOC I - MER 16,200 7,000 20 118 15 45 84 5 180

ACU-

HOC II HOC II - MER 12,000 4,350 15 82 10 45 54 5 180

ACU-

MED / BOOK-

ING

ROOF 9,500 1,200 15 72 10 45 23 5 180

ACU-

STAFF ROOF 11,600 5,100 15 94 10 45 39 7 180

ACU-

VISITING /

DINING

ROOF 11,100 2,100 15 75 10 45 26 5 180

ACU-

EDUCATIONAL ROOF 10,000 1,700 15 68 10 45 24 5 180

HV-1

KITCHEN /

MAKE-UP

ROOF 11,200 1,200 10 NA NA NA 95 5 180

HV-2

KITCHEN /

MAKE-UP

ROOF 3,250 3,250 3 NA NA NA 26 5 180

HV-3

KITCHEN /

LAUNDRY

ROOF 2,100 500 3 NA NA NA 18 5 180

HV-4 GYM ROOF 16,000 4,000 15 Unknown Unknown Unknown 57 5 180

AHU- PRERELEASE PRERELEASE TBD TBD 1.5 TBD

B1502090.000 3 | 7

1 MER

AHU-

PRERELEASE

PRERELEASE

MER

TBD TBD 1.5 TBD

1.2.2 Terminal Units

Air distribution downstream at the main building central unit is provided by forty (40) single ducts, cooling only, VAV terminal units. Additionally, there are seventeen (17) fan powered terminal units (FPTs) with hot water reheat coils.

The FPTs primarily serve the corridors in the central unit.

1.2.3 Return and Exhaust Fans

The campus is equipped with exhaust fans located on the roof of the main building, DAC, and vehicle maintenance building. The fans serve the kitchen, toilets, electrical rooms, laundry room, and various other spaces. These fans are either energized thermostatically, energized 24/7, or energized via a manual switch. Additionally, there are return fans serving the ACUs and HV-4.

The fans are listed in Table 1.2 below:

Table 1.2 – Fan Schedule

MARK NO AREA SERVED LOCATION AIR VOLUME (CFM) MAX BHP

MOTOR DATA

HP VOLT PH

RF-1 JAIL JAIL - MER 5,600 1.3 2.00 480 3

RF-2 SEG UNIT SEG - MER 4,000 1 1.50 480 3

RF-3 HOC I HOC I - MER 9,200 2 3.00 480 3

RF-4 HOC II HOC II - MER 7,700 2 3.00 480 3

RF-5 ACU-5 ROOF 740 3.5 5.00 480 3

RF-6 ACU-6 ROOF 6,500 2.5 7.50 480 3

RF-7 ACU-7 ROOF 9,000 4.5 7.50 480 3

RF-8 ACU-8 ROOF 8,300 4 5.00 480 3

RF-10 HV-4 ROOF 12,000 6.9 10.00 480 3

TX-1 JAIL WEST ROOF 1,750 - 0.75 480 3

TX-2 JAIL SOUTH ROOF 1,350 - 0.75 480 3

TX-3 SEG SOUTH ROOF 650 - 0.33 120 1

TX-4 SEG EAST ROOF 1,350 - 0.75 480 3

TX-5 HOC I WEST ROOF 2,900 - 480 3

TX-6 HOC I NORTH ROOF 3,000 - 480 3

TX-7 HOC II NORTH ROOF 1,700 - 0.75 480 3

TX-8 HOC II EAST ROOF 1,750 - 0.75 480 3

TX-9 MEDICAL ROOF 1,350 - 0.50 480 3

TX-10 QUARANTINE ROOF 400 - 0.25 120 1

TX-11 STAFF ROOF 3,400 - 1.00 480 3

TX-12 BOOKING ROOF 450 - 0.50 480 3

TX-13 KITCHEN / DINING ROOF 1,200 - 0.50 480 3

TX-14 VISITING ROOF 850 - 0.50 480 3

TX-15 MECH WING ROOF 150 - 0.25 120 1

TX-16 PRERELEASE ROOF 700 0.2 0.33 120 1

TX-17 PRERELEASE ROOF 700 0.2 0.33 120 1

TX-18 VEH MAINT ROOF 150 - 0.25 120 1

SX-1 JAIL WEST ROOF 7,500 - 2.00 480 3

SX-2 JAIL SOUTH ROOF 6,500 - 1.50 480 3

SX-3 SEG SOUTH ROOF 3,000 - 0.75 480 3

SX-4 SEG EAST ROOF 4,500 - 1.50 480 3

SX-5 HOC I WEST ROOF 12,000 - 5.00 480 3

SX-6 HOC I NORTH ROOF 12,000 - 5.00 480 3

SX-7 HOC II NORTH ROOF 9,500 - 3.00 480 3

SX-8 HOC II EAST ROOF 9,500 - 3.00 480 3

EX-1 VEH SALLYPORT ROOF 2,000 - 0.50 3

EX-2 CAN WASH ROOF 300 - 0.05 120 1

EX-3 LAUNDRY ROOF 300 - 0.07 120 1

EX-4 GYM ROOF 4,000 - 1.00 480 3

EX-5 BOILER ROOM ROOF 6,000 - 1.00 480 3

B1502090.000 4 | 7

EX-6 BOILER ROOM ROOF 6,000 - 1.00 480 3

EX-7 ELEC ROOM ROOF 500 - 0.13 120 3

EX-8 ELEC ROOM ROOF 500 - 0.13 120 3

EX-9 COMM ROOM ROOF 500 - 120 1

EX-10 VEH MAINT ROOF 2,780 0.48 0.50 480 3

EX-11 VEH MAINT GARAGE 1,600 - 1.50 480 3

EX-12 VEH MAINT ROOF 720 0.13 0.13 120 1

EX-13 CARPENTRY ROOF 400 - 0.05 120 1

EX-14 MECHANICAL SHOP ROOF 200 - 0.07 120 1

KX-1 KITCHEN HOOD ROOF 11,900 - 7.50 480 3

KX-2 SERVERY HOOD ROOF 3,450 - 2.00 480 3

KX-3 DISHWASHER ROOF 600 - 0.33 120 1

KX-4 GEN KITCHEN ROOF 800 - 0.25 120 1

KX-5 PRERELEASE CEILING 150 - 0.33 120 1

LX-1 LAUNDRY ROOF 1,800 - 0.50 480 3

EX-15 STORAGE ROOM 154 ROOF 100 0 0.02 120 1

EX-16 STORAGE ROOM 153 ROOF 100 0 0.02 120 1

EX-17 COMPRESSOR ROOM ROOF 100 0 0.02 120 1

EX-18 STORAGE ROOM 121 ROOF 100 0 0.02 120 1

EX-19 STORAGE ROOM 123 ROOF 100 0 0.02 120 1

EX-20 STORAGE ROOM ROOF 100 0 0.02 120 1

1.2.4 Chilled Water System

The main building contains two (2) 150-ton, water-cooled, hermetic centrifugal chillers (CH-1, CH-2) located in the Boiler Room. The chillers provide chilled water to the ACUs and HV-4 to maintain the discharge air temperature setpoint.

The DAC contains one (1) 35-ton, air-cooled, reciprocating chiller (CH-3) located outside. The chiller provides chilled water to AHU-1, AHU-2, and the fan coil units to maintain discharge air temperature setpoint.

All chillers are listed in Table 1.3 below.

Table 1.3 - Chiller Schedule

MARK NO SERVICE LOCATION

CAPACITY

TONS

COMPRESSOR DATA EVAPORATOR DATA CONDENSER DATA

KW

INPUT

MAX KW PER TON EWT LWT GPM EWT LWT GPM

CH 1&2 MAIN BLG

BOILER

ROOM

150 98 0.65 58 45 280 85 95 450

CH3

PRERE-

LEASE

OUTSIDE 35 40.2 1.15 58 45 70 - - -

Main building chilled water is supplied to the ACUs and HV-4 via three (3) 10 HP pumps (P-5A, P-5B, P-5C). Pump operation is lead/lag/standby with a manual rotation cycle to equalize run time.

DAC chilled water is supplied to AHU-1, AHU-2, and the fan coil units via two (2) 3 HP pumps. Pump operation is lead/lag with a manual rotation cycle to equalize run time.

All chilled water pumps are listed in Table 1.4 below.

Table 1.4 - Chilled Water Pump Schedule

MARK NO SERVICE LOCATION PUMP TYPE

PERFORMANCE DATA MOTOR DATA

GPM TDH (FT) RPM HP VOLT PHASE

P5-(A,B,C) CHILLED WATER BOILER ROOM END SUCTION 280 80 1750 10 480 3

P8-(A&B) CHILLED WATER PRERELEASE IN-LINE 70 60 1750 3 480 3

B1502090.000 5 | 7

1.2.5 Condenser Water System

Heat generated by the water-cooled chillers (CH-1, CH-2) is rejected to the atmosphere by a two (2) cell, 274-ton (total) cooling tower (CT-1, CT-2) serving the condenser water system. Each cooling tower fan is constant volume.

The cooling towers are listed in Table 1.5 below:

Table 1.5 – Cooling Tower Schedule

MARK NO SERVICE LOCATION TYPE

CONDENSER WATER DATA FAN MOTOR DATA

GPM EWT LWT AIR TEMP NO OF MOTOR HP CFM

CT 1&2 CH 1&2 ROOF FORCED DRAFT 450 95 85 76 1 20 26400

Condenser water is circulated through the chillers and cooling towers via three (3) 15 HP pumps (P-6A, P-6B, P- 6C). Pump operation is lead/lag/standby with a manual rotation cycle to equalize run time. The pumps are constant volume and are energized in conjunction with cooling tower and chiller operation.

The condenser water pumps are listed in Table 1.6 below:

Table 1.6 – Condenser Water Pump Schedule

MARK NO SERVICE LOCATION PUMP TYPE

PERFORMANCE DATA MOTOR DATA

GPM TDH (FT) RPM HP VOLT PHASE

P6-(A,B,C) CONDENSER WATER BOILER ROOM END SUCTION 450 65 1750 15 480 3

1.2.6 Hot Water and Glycol System:

The main building contains two (2) natural gas fired boilers (B-1, B-2) rated at 3,000 MBH each, located in the boiler room. The boilers provide hot water to:

1. Hot Water / Glycol Heat Exchanger (glycol loop serves the ACUs and HVs)

2. Fintube Radiation Loop (serves fintube radiators, unit heaters, and fan-powered boxes)

The DAC contains one (1) natural gas fired boiler (B-3) rated at 850 MBH. The boiler provides hot water to AHU-1, AHU-2, fan coil units, and unit heaters in the vehicle maintenance building.

All boilers are listed in Table 1.7 below:

Table 1.7 – Boiler Schedule

MARK NO LOCATION

CAP SBI

GROSS

MBH

HEATING

SURFACE

SQ FT MIN

FURNACE

VOLUME CU

FT MIN

FIRING RATES

BURNER

HP

MIN GAS

PRESS IN

WC

GPH CFH

B1&2

BOILER

ROOM

3000 500 25

- 4200 3 11

B3 PRELEASE 850 105 16 - 1490 0.5 5

Hot water is circulated through the main building boilers via three (3) 5 HP pumps (P-1A, P-1B, P-1C). Pump operation is lead/lag/standby with a manual rotation cycle to equalize run time. The pumps are constant volume and are energized in conjunction with boiler operation.

Hot water is circulated through the hot water / glycol heat exchanger via two (2) 10 HP pumps (P-2A, P-2B). Pump operation is lead/standby with a manual rotation cycle to equalize run time. The pumps are constant volume and are controlled based on the glycol supply water temperature.

Glycol is circulated through the ACUs and HVs via two (2) 15 HP pumps (P-3A, P-3B). Pump operation is lead/standby with a manual rotation cycle to equalize run time. The pumps are constant volume and are energized whenever the ACUs and HVs are calling for heat.

Hot water is circulated through the fintube radiation loop via two (2) 3 HP pumps (P-4A, P-4B). Pump operation is lead/standby with a manual rotation cycle to equalize run time. The pumps are constant volume and are energized when the outside air temperature is below the setpoint.

B1502090.000 6 | 7

Hot water at the DAC is circulated by two (2) 3 HP pumps (P-9A, P-9B). These pumps provide hot water to the fin tube radiators, air conditioning units, and fan coil units in the DAC. The pumps are constant volume and are energized 24/7 throughout the heating season. Pump operation is lead/lag with a manual rotation cycle to equalize run time.

There are two (2) 2 HP pumps (P-7A, P-7B) that provide hot water to the vehicle maintenance unit heaters. The pumps are constant volume and are energized 24/7 throughout the heating season. Pump operation is lead/lag with a manual rotation cycle to equalize run time.

All hot water pumps are listed in Table 1.8 below:

Table 1.8 - Hot Water Pumps

MARK NO SERVICE LOCATION PUMP TYPE

PERFORMANCE DATA MOTOR DATA

GPM TDH (FT) RPM HP VOLT PHASE

P1-(A,B,C) HOT WATER BOILER ROOM END SUCTION 310 30 1750 5 480 3

P2-(A&B) HW-GLYCOL BOILER ROOM END SUCTION 540 40 1750 7.5 480 3

P3-(A&B) GLYCOL BOILER ROOM END SUCTION 540 70 1750 15 480 3

P4-(A&B) RADIATION BOILER ROOM IN-LINE 90 50 1750 3 480 3

P5-(A,B,C) CHILLED WATER BOILER ROOM END SUCTION 280 80 1750 15 480 3

P6-(A,B,C) CONDR WATER BOILER ROOM END SUCTION 450 65 1750 15 480 3

P7-(A&B) CONDR WATER MAINT BLDG IN-LINE 50 20 1750 2 480 3

P8-(A&B) CHILLED WATER PRERELEASE IN-LINE 70 60 1750 3 480 3

P9-(A&B) HOT WATER PRERELEASE IN-LINE 50 60 1750 3 480 3

FR1-(A&B) DIESEL OIL EMER GEN BLDG 5 30 950 0.5 480 3

B1502090.000 7 | 7

1.3 Domestic Hot Water

There are three (3) domestic hot water systems serving the main building.

Main DHW System – serves sinks and showers

The main domestic hot water system has been recently replaced with two (2), condensing, 850 MBH THB water heaters. The 1,500 gallon storage tank is original to the building. The system supply temperature is set at 110F.

Laundry DHW System

The laundry domestic hot water system consists of two (2) 400 MBH Raypack units with a 750 gallon storage tank.

The system supply temperature is set at 170F, which tends to drop to 150F under load. The system supports five

(5) commercial grade washing machines.

Kitchen DHW System

The kitchen domestic hot water system consists of two (2) 400 MBH Raypack units with a 1,000 gallon storage tank. The system supply temperature is set at 150F.

Additionally, there is one (1) domestic hot water system serving the DAC. This system is located on the second floor and consists of two (2) 300 MBH Raypack units with a 350 gallon horizontal storage tank. There are two (2) sets of paired circulation pumps; this is, one set for circulation between the heaters and storage tank, and the second set for system circulation. The system serves lavatories, showers, and one (1) commercial washing machine.

1.4 Lighting and Lighting Controls System

1.4.1 Main Building

Lighting within the central unit corridors primarily consists of 1’ x 1’ 135W metal halide fixtures. During the walkthrough, it was noted that every alternate fixture was on. Lighting within the pod corridors consists of T8 fluorescent fixtures. Lighting within the cells primarily consists of T8 fluorescent fixtures. Directly outside each cell, is a 9W compact fluorescent lamp. There are 10 high bay 250W metal halide fixtures in each of the pods. During the walkthrough, it was noted that only four (4) of the metal halide lamps were energized. There are additional metal halide fixtures in the gym.

1.4.2 DAC

Lighting with the corridors consists of 4’ T8 fluorescent fixtures with two (2) lamps per fixture. There are four (4) high bay metal halide lamps in the lobby. Each cell consists of one (1) 4’ T8 fluorescent fixture with two (2) lamps per fixture.

All lighting on the campus is manually controlled. Exterior lighting on the campus is controlled via a timeclock.

- End of Building Description -

WSP

88 Black Falcon Avenue, Ste 210 Boston, MA 02210 617 210 1600 www.wspgroup.com/usa

P:\B13\B1310200000_BCBS_OED_TA_Study\FAC\FINAL DELIVERABLES\2. Building Facility Description\TAB 2 - Building Facility Description.docx

Existing Facility Conditions Assessment and Recommendations

B1502090.00

June 19, 2015

Prepared For:

Division of Capital Asset Management & Maintenance

One Ashburton Place, 15 th Floor

Existing Facility Conditions Assessment and Recommendations

Table of Contents

1. EXECUTIVE SUMMARY

2. SUMMARY OF RECOMMENDATIONS/SUGGESTIONS

3. PROJECT INFORMATION

3.1 Introduction

3.2 General Property Description

4. MECHANICAL SYSTEMS CONDITIONS ASSESSMENT

4.1 General System Equipment

4.2 Chillers (CH-1 & CH-2)

4.3 Cooling Towers (CT-1 & CT-2)

4.4 Chilled Water Pumps (P-5A, P-5B, P-5C)

4.5 Condenser Water Pumps (P-6A, P-6B, P-6C)

4.6 Hot Water Boiler (B-1 & B-2)

4.7 Hot Water Loop Pumps (P-1A, B, C, P-2A, B, P-3A, B, P-4A, B)

4.8 Air Conditioning Units (ACU-1, 2, 3, 4 w/ RF-1, 2, 3, 4)

4.9 Air Conditioning Units (ACU-5, 6, 7, 8 w/ RF-5, 6, 7, 8)

4.10 Heating & Ventilation (HV-1, 2, 3)

4.11 Heating & Ventilation (HV-4 and RF-10)

4.12 Exhaust Fans (TXs, EXs, SXs)

4.13 Kitchen Exhaust Fans (KXs)

4.14 Unit Heaters (UHs)

4.15 Variable Air Volume Boxes (VAVs)

4.16 Early Release Chiller (CH-3)

4.17 Early Release Boiler (B-3)

4.18 Early Release Chilled Water Pumps (P-8A, P-8B)

4.19 Early Release Hot Water Pumps (P-7A&B, P-9A&B)

4.20 Early Release Air Condition Unit (AHU-1 & 2)

4.21 Early Release Fan Coil Units

4.22 Miscellaneous Recommendations

5. ELECTRICAL SYSTEMS CONDITIONS ASSESSMENT

5.1 15 KV FEEDERS AND EQUIPMENT

5.2 Main Distribution Board (MSB-1)

5.3 Emergency Generator

5.4 Automatic Transfer Switch (Emergency)

5.5 Uninterruptable Power Supply (UPS)

5.6 Building Security

5.7 Building Lighting

5.8 Site Lighting

5.9 Fire Alarm System

5.10 Lightning Protection

6. PLUMBING / FIRE PROTECTION SYSTEMS CONDITION ASSESSMENT

6.1 Main Correctional Facility

6.2 Dedham Alternative Center

6.3 Vehicle Maintenance Building

7. Building Envelope Condition Assessment

7.1 Infrared Thermographic Building Envelope Analysis

7.2 Infrared Thermographic Roof Moisture Analysis

8. APPENDIX

8.1 Infrared Thermographic Building Envelope Analysis

8.2 Infrared Thermographic Roof Moisture Analysis

B1502090.00 1 | 77

1. EXECUTIVE SUMMARY

The Massachusetts Department of Capital Asset Management and Maintenance has retained the services of WSP to perform a Condition Assessment of the existing Norfolk County Correctional Center located in Dedham, MA.

The review consisted of an on-site building evaluation; drawings review; and interviews/discussions with the facility maintenance personnel. The purpose of this report is to provide an overview of the onsite conditions of the MEP/FP systems and provide recommendations to DCAMM regarding repairs, maintenance and preventative maintenance activities.

The report provides the results of our evaluation for all mechanical, electrical and plumbing/fire protection systems.

2. SUMMARY OF RECOMMENDATIONS/SUGGESTIONS

Below is a list of the MAJOR recommendations for system improvement/replacement based on visual inspection. Additional recommendations provided within report under each individual section.

Within the major recommendations below the following designations are used; MCF = Main Correctional Facility, DAC = Dedham Alternative Center, VHB = Vehicle Maintenance Building.

MECHANICAL

Recommendation Replace In Cost

1 PNEUMATIC TO DDC UPGRADE:

Upgrade all building equipment from pneumatic controls to DDC operation and remove all pneumatics. Institute a building automation system to monitor and control all building equipment.

Refer to Energy Audit report

2 COMPUTER MAINTENANCE MANAGEMENT SYSTEM:

Consider providing a centralized Computer Maintenance Management System (CMMS) to generate work orders and preventative maintenance tasks. Develop a working list of all equipment and product data to assign PM procedures to each piece of equipment on a frequency basis per manufacturer’s instructions

2-5 years ~$75,000 - $100,000

3 CHILLED/CONDENSER WATER SYSTEM

Replace and upgrade the chilled water system (chiller, cooling towers, pumps, controls, etc.) for full and part load operation (variable volume). Refer to considerations under each equipment recommendation section.

1-2 years Refer to Energy Audit report

4 CHILLED WATER/HOT WATER PUMPS

Replace all pump motors for chilled water and hot water distribution with high efficiency motors capable of variable volume control and integration with a building automation system

1-3 years ~$5,000 – 7,500 per pump

5 AIR CONDITIONING UNITS (ACUs) Option #1 – Upgrade and repair existing equipment and system as recommended under the ACU sections Option #2 – Replace ACUs and components in kind with new as recommended under the ACU sections

1-3 years Option #1: ~ 10,000 per unit Option #2: ~ $87,825 - $113,550 per unit and type

6 HEATING AND VENTILATION UNITS (H&Vs 1-3) Upgrade and repair existing equipment and system as recommended under the H&V sections

1-3 years ~$10,000 - $15,000 per unit

7 HEATING AND VENTILATION UNIT (HV-4) 1-2 years ~$45,000 – $65,000

B1502090.00 2 | 77

Due to space usage changes, it is recommended to replace HV-4 and install a more suitable Air Conditioning Unit. Current unit is incapable of providing adequate temperature control (heating only) and outside air requirements.

8 DEDHAM ALTERNATIVE CENTER CHILLED/HOT WATER PUMPS

As the pumps are original to the building and are nearing, if not past the end of their useful life cycle, it is recommended that the pumps be removed and replaced in kind. Perform a rebalance on the system loops and provide and upgrade to the control operation to allow for automatic changeover. In addition, new pumps should be energy efficient with the capability of VFD operation and future integration with a building automation system.

1-2 years ~$3,599 - $5,499 per pump set

9 DEDHAM ALTERNATIVE CENTER FAN COIL UNITS

It is recommended at the very least that the FCUs in the building be replaced throughout. Install a plate thermostat without ability for user adjustment within the holding areas. Install proper access panels on newly installed FCUs to allow for proper preventative maintenance.

1-2 years ~$2,753+ per fan coil unit

10 Repair all damaged insulation (leaks, tears, rips, etc.) throughout all building systems (ductwork and piping). Damaged insulation has negative effect on air and fluid temperature control. Refer to considerations under each equipment recommendation section.

1-2 years ~$20 - $50 per 2ft length

11 Repair/remove all damaged and rusted exterior and interior piping due to weather and system leaks. Refer to considerations under each equipment recommendation section.

1-2 years ~$60 - $100 per 6 in

12 On motors (fans and pumps) that are to remain, the site team should consider providing a vibration analysis to determine irregularities in pump and fan operation. Vibration analysis will identify irregularities in motor frequency, acceleration, displacement, vibration, etc. that would otherwise not be seen during a visual inspection

1-3 years ~$1,000 - $1,250 per day (30 motors in a day)

ELECTRICAL

Recommendation Replace In Cost

1 MCF – 15 kV Electrical Service. The electrical service to the building is original with an expected life cycle of (30) years, however, because this is a 24/7 facility, the electrical system does not have much down time. Also, there are many more residents in the building than the system was designed. It is suggested to replace the 15 kV switches, the 15 kV housing, safety interlocks, 15 kV to 480Y/277 Volt transformer, automatic transfer unit, the feeders, 15 kV controllers as well as the station battery system as they are all original. (Note: All of this equipment might be owned by the utility company and not cost the facility for these upgrades. It is suggested that this be the highest priority to see where this cost might belong, as freeing up this cost can be shifted to other pressing needs of the facility).

1/ 3 Years

$166, 295.

$4

2 MCF – The main electrical switchboard ”MSB-1” is original, and undersized by todays standards, is maxed out without any room for expansion, there are no replacement breakers and if the 2,500 MCB should develop problems, the replacement MCB is only rated for 2,000 Amps. The room it is located in also has several NEC safety

$192,854

B1502090.00 3 | 77 codes: incorrect door swing, no panic hardware, no second means of egress, storage in the room, etc. It is suggested to replace the main switchboard with a 4,000 amp switchboard to allow room for expansion as well as to provide new spare breakers other than paying a premium for out of date breakers for the existing unit.

3 MCF – New Main Electrical Room. The existing main electrical room as noted above is already smaller than required by code, has safety issues as noted above and is not large enough to have space for larger gear. It is suggested to build a new main electrical room adjacent to the existing on the outside of the building. This would allow the construction of a code compliant room to meet today’s standards, install the new equipment and have short turnaround time when switching over to the new equipment.

$88,000.

4 MCF – Jail Cell and Gate Control. The existing control system for the cell doors and spaces between the outside of the jail area and the inside of the jail area are aged and failing. Many of the controls have indicator lights to signify if doors are locked or unlocked. It was stated that when the facility was being finished the installing company was going out of business and was completed by a contractor in his garage. On the day of the survey there were workmen working on fixing the system. As this is a very specialized system it is strongly recommended to have a specialist review the system and/or recommended how the system should be addressed. For this report a cost per square foot is used at $3.57 for the facility.

1/ 3 Years Currently being completed within building

5 MCF – Sound Systems. The facility has several sound system for announcements, intercoms when passing through the locked area, etc. most are aged and/or do not function. Hand signals are used in some areas. These should be upgraded so good verbal communication can be made.

Currently being completed within building

6 MCF – Security System. The facility has metal detectors, scanners, CCTV cameras, detection system around the exterior, etc. Although some upgrades have been made i.e. CCTV Cameras, many of the other systems are nearing the end of their expected life cycle.

Providing and installing new exterior microwave sensors, metal detectors, X-Ray equipment, etc. will help prevent a security breach for items being brought into the facility as well as residents from fleeing the facility.

3/ 5 Years

$112,613.

7 MCF – Fire Alarm System. A good amount of fire alarm wiring in the building appears to be original, the controllers are a mix of older and newer parts mixed together. As this is an electronic based system it has an expected life of (10) to (15) years which has long since passed. It was also stated by site personnel that lightning strikes may have caused damage to the fire alarm system.

Updating the lightning protection system and the grounding system with any luck help to cut down any damage to electronic systems in the building such as the fire alarm control panel.

$202,415.

8 MCF – Lightning Protection. The facility is protected with a lightning protection system. For the most part it appears to be a good system in very good condition, however, several lose

$4,500.

B1502090.00 4 | 77 connections were found and a few missing aerials which might have been due to the roofing upgrade. It is suggested to have a qualified person spend two days on the roof to review the system and make needed adjustments or adds.

9 MCF – Generator. The existing generator is said to be functional at this time, however, it is undersized to provide emergency power for many of the systems the facility needs. Although the unit is still functional, the size is an issue, the housing is aged and rusted, and the alarms, fuel sensors, remote annunciator, tank rupture alarm etc. are all reason for concern. It is strongly recommended that replacing the unit with a new larger generator, housing, sensors, alarms, tank, etc. take place soon before there is a failure and the cost to repair/replace has to be done in a short time frame while paying a premium for extra hours for the workmen.

$750,000–$850,000

10 MCF – Generator Housing. If a new generator is to be provided, then new generator housing will also be needed to keep the unit out of the elements to protect the new investment.

$28,935.

11 MCF – The Underground Generator fuel tank. The existing generator underground fuel tank is original and it was not known if it is a double walled tank or singled wall tank. The staff orders fuel from time to time as the fuel level is not known due to the failed fuel level sensor. It is strongly advised that a new, double walled tank with all needed and required sensors and alarms be installed as soon as possible. This will allow time to drain the old tank and remove it in a safe manor. If the existing tank were to rupture the generator would not be able to run as the fuel supply would be gone. The costs of cleanup and EPA fines are also a big concern.

$33,000.

12 MCF – Automatic Transfer Switch (ATS). The facility has (1) ATS switch at this time to handle all emergency needs of the facility. It was not confirmed if this is a violation based on the time frame it was installed and/or grandfathered. By today’s standards the building should be provided with a minimum of (3) ATS Switches:

Life Safety, Legally Required and Optional Standby. Should a new and larger generator be installed, three or more new ATS switches should also be installed.

$64,414

13 MCF – Infrared Scanning. The building has in the past had the electrical equipment infrared scanned to look for hot spots, overloads, possible failure spots, etc. It is suggested that this be performed on a three years cycle to catch any issues before they happen. In many cases, the last time the facility electrical equipment was checked was in 1997. In is strongly suggested that the existing equipment have preventive maintenance performed and infrared scanning to confirm there are no issue areas and to allow time for the existing equipment to continue to function until the time changes/upgrades are made.

$11,416.

14 MCF – Motor Control Centers (MCC) units. The building has (6) MCC units in the building which are all original. Replacement parts for all of these units are difficult to purchase and they cost a premium. Good money is being spent to find parts for an old system. None of the green or red lights were seen to be functional

$176,888.

B1502090.00 5 | 77 on the MCC’s to indicate if the motors they are feeding are stopped or running. These should all be replaced with new units as well as to have spare buckets when they fail over time.

15 MCF – The branch circuit wiring in building is original and normally has an expected life cycle or (40) years, however, as this is a 24/7 facility it should be reviewed to see if that schedule be shortened.

140,000 square foot facility at a cost of $2.90 per square foot = $406,000. and with factors figured in i.e. locations, facility, etc. X

1.117 = $453,505.

10/15 Years

$453,502.

16 MCF – Distribution Panels. Replace the (4) distribution panels with new.

$64,800.

17 MCF – Electrical Panels. Replace the (18) electrical panels with new.

$183,600.

18 MCF – As Built Drawings. The existing drawings that the staff has to work with are as they were drawn in 1990. They were never updated to match the actual as built conditions and there are a number of drawings that have gone missing. It is suggested they have engineers review existing conditions and provide a full set of as built drawings that can be relied on by the staff when needed.

$24,000.

19 MCF – The facilities group should be provided with a dedicated computer and software for their (PM) preventive maintenance.

Once the date base is filled with the equipment and schedules, the system can provided them with a list of the needed/required preventive maintenance. This will help keep the buildings systems current with less time consuming effort of checking things manually each day or week.

$25,000

20 MCF – The systems in the facility should be provided with a power monitoring system. This will allow the facility engineer the ability to review how the various systems in the building are functioning. If a problem is reported in the facility, this system can help the staff find where the problem is stemming from. It will also track when there are changes in the system such as a higher electrical draw on the system due to say a bad motor. This will also allow the building overseer break down where the higher costs are coming from in the electrical system.

$30,000

21 MCF – Lighting, lighting fixtures, replacement, upgrades, etc. Have all been covered in a much more detailed report by another vendor.

Please via that report for additional information.

N/A

$0.

22 MCF – Grounding was said to be an issue in each building on site as they are built on ledge. It is suggested to have this corrected.

$38,496

23 DAC - The electrical panels, feeders and/or transformer in the building are (25) years old and have an expected life of (30) years.

These upgrades should be performed in the time frame suggested.

3/5 Years

$38,100.

24 DAC – The branch circuit wiring in building is original and normally has an expected life cycle or (40) years with about (15) years before it should be replaced.

$17,559.

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25 DAC – Fire Alarm system in the building is believed to be original to the building. As an electronic based system the expected life cycle is (10) to (15) years and this system has long past that expected time period. It is suggested to replace the existing system with a new system. The cost is low as compared to having to replace the building in the event of a fire.

$4,350.

26 DAC – Lighting, lighting fixtures, replacement, upgrades, etc. Have all been covered in a much more detailed report by another vendor.

27 DAC – Grounding was said to be an issue in each building on site

$8,616

28 VMB - The electrical panels, feeders and/or transformer in the building are (25) years old and have an expected life of (30) years.

These upgrades should be performed in the time frame suggested.

3/5 Years

$26,919.

29 VMB – The branch circuit wiring in building is original and normally has an expected life cycle or (40) years with about (15) years before it should be replaced.

$3,658.

30 VMB – Lighting, lighting fixtures, replacement, upgrades, etc. Have all been covered in a much more detailed report by another vendor.

31 VMB – Fire Alarm system. It is suggested to have a fire alarm security in the vehicle maintenance building as the cost is low as compared to having to replace the building in the event of a fire.

$2,792.

32 VMB – Alarm and Security system. It is suggested to provide and install a security/alarm system in the vehicle maintenance show to protect the building and its contents.

$4,188.

33 VMB – Grounding was said to be an issue in each building on site

$4,106.

PLUMBING / FIRE PROTECTION

Recommendation Replace In Cost

1 GENERAL ALL BUILDINGS:

Provide a PM schedule for the water heaters which include flushing the water heater and tank annually.

1-3 years $550 per water heater for PM service

2 MAIN CORRECTIONAL FACILITY:

Replace all general use fixtures and shower heads with new water efficient fixtures and trim.

1-3 years Refer to Energy Audit Report

3 MAIN CORRECTIONAL FACILITY:

Recommended to replace the laundry water heater and kitchen water heaters with condensing type water heaters similar to the main domestic water heater recently installed. Two (2) 400 MBH water heaters should be able to supply the needs for the kitchen.

However, the laundry water heater should be increased to 600 MBH due to the heavy load from increased population.

1-3 years Refer to Energy Audit Report

4 MAIN CORRECTIONAL FACILITY:

Repair all corrosion on the laundry water heaters vacuum breakers.

1-3 years $250-$500

5 DEDHAM ALTERNATIVE CENTER: 1-3 years $2,250

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Provide ceiling in second floor mechanical room and complete sprinkler coverage.

6 DEDHAM ALTERNATIVE CENTER AND VEHICLE MAINTENANCE

BUILDING:

Consider upgrading the water heater to a high efficiency condensing type.

1-3 years $6,625 - $12,500

7 VEHICLE MAINTENANCE BUILDING:

Consider installing a deep floor sink with lint basket to relieve the overflow from discharge of washing machine.

1-3 years $1,534

8 VEHICLE MAINTENANCE BUILDING:

Consider removing the domestic water booster pump, since it has been moth balled, and could contribute to becoming a catch all for sediment.

1-3 years $500-$1000 (Demolition)

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3. PROJECT INFORMATION

3.1 Introduction

This report represents the results of the Condition Assessment performed on the Blue Cross Blue Shield of MA building, located at One Enterprise Drive in Quincy, MA. The assessment was completed by WSP Group and funded by Blue Cross Blue Shield.

The Table below lists the contact information of the Condition Assessment Team

Name/Title Affiliation Phone Numbers E-mail Address

Scott Petit WSP (Project Mgr) 617-210-1825 Scott.petit@wspgroup.com

Kevin Spates WSP (Mechanical) 617-210-1739 Kevin.spates@wspgroup.com

Fernand Tomaz WSP (Plumbing) 617-210-1747 Fernand.tomaz@wspgroup.com

Francis Quigley WSP (Electrical) 617-210-1737 Francis.quigley@wspgroup.com

David Venturoso WSP (Energy) 617-210-1804 David.venturoso@wspgroup.com

Anurag Goel WSP (Energy) 617-210-1740 Anurag.goel@wspgroup.com

3.2 General Property Description

The Norfolk Country Correctional Center (NCCC) is located in Dedham, MA and opened in 1993. The campus consists of two (2) buildings – a 140,000 square foot main building with 502 beds and a 12,000 square foot Dedham Alternative Center. Additionally, there is a 2,500 square foot vehicle maintenance building adjacent to the Dedham Alternative Center. NCCC is owned by the Commonwealth of Massachusetts and operated by the Norfolk County Sheriff’s Office. The main building consists of four (4) pods connected to the central unit. There is a control center and two levels of cells at each pod. The central unit is single story and consists of a kitchen, laundry room, administrative spaces, mechanical/back of house areas, and a gym. The gym is now being used to house additional inmates. The main building is currently over occupied and there are plans to add an additional building, potentially housing 50 inmates.

Early Release building

Vehicle Maintenance Building

Main Building mailto:Scott.petit@wspgroup.com mailto:Kevin.spates@wspgroup.com mailto:Fernand.tomaz@wspgroup.com mailto:Francis.quigley@wspgroup.com mailto:David.venturoso@wspgroup.com mailto:Anurag.goel@wspgroup.com

B1502090.00 9 | 77

4. MECHANICAL SYSTEMS CONDITIONS ASSESSMENT

4.1 General System Equipment

4.1.1 General Upfront Recommendations

A. Upgrade all building equipment from pneumatic controls to DDC operation and remove all pneumatics. Institute a building automation system to monitor and control all building equipment.

B. Consider providing a centralized Computer Maintenance Management System (CMMS) to generate work orders and preventative maintenance tasks.

a. Develop a working list of all equipment and product data.

b. Assign maintenance and preventative maintenance procedures to each piece of equipment on a weekly, biweekly, monthly, yearly, etc. basis.

C. On motors (fans and pumps) that are to remain, the site team should consider providing a vibration analysis to determine irregularities in pump and fan operation.

a. Vibration analysis will identify irregularities in motor frequency, acceleration, displacement, vibration, etc. that would otherwise not be seen during a visual inspection

D. Consider perform retro-commissioning of the main building systems and operation to confirm control.

Individual system sequences and operation were not confirmed during this assessment. By sequencing each piece of equipment, additional action items and irregularities in operation will be identified. Furthermore, on all equipment upgrades and replacements include commissioning for confirmation of equipment operation.

E. Consider performing an indoor air quality assessment and test within the building. While reviewing the site equipment, occupancy, indoor quality, etc. from a visual aspect, it was noted that there may not be adequate outside air being delivered to the space in reference to today’s standards. In addition, increased occupants above original design parameters warrants this account. Further investigation and calculation would need to be completed prior to confirming this claim.

4.2 Chillers (CH-1 & CH-2)

4.2.1 General Description

A. The building facility is served by two 150-ton water-cooled McQuay centrifugal chillers (300-ton total) original to the building construction in 1990. The chillers are located in the main mechanical room.

B. The chillers are supplied condenser water from two roof mounted cooling towers and three condenser water pumps. Distribution of chilled water is provided via three chilled water pumps.

Chilled water is provided to the air conditioning unit cooling coils.

C. Each chiller is sized for 50% of the total cooling capacity of the building during design day conditions.

Since the space is at approximately 200% capacity of the original design, the chillers are operating at full speed and not capable of providing adequate cooling.

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4.2.2 Controls and Operation

A. The Chillers are controlled by their factory mounted control system installed original to the building.

B. The system requires a manual on/off switch to enable the chillers for operation. Once the chillers switch is in the “on” position, they will cycle based on the factory controller to maintain chilled water temperature.

C. The chilled water temperature set point is controlled and adjusted at the factory mounted controller.

D. All actuator and control operation is done through pneumatic tubing control.

4.2.3 Condition

A. Tubes were being punched at the time of the visit. It was noted that the tubes are thinning out. This is due to the life of the chiller and consistent operation and maintenance over 25 years.

B. Valve actuators appear to be last checked/inspected or repaired in July 2012. They are noted to be fully operational through the pneumatic system.

C. Pipes appear to be in OK condition with no major rusting around the chiller and connections.

D. Pipe insulation appears to be in OK condition with no major damage to affect the containment of water temperature. There are some small spots of damaged insulation that should be repaired.

E. Operation was not witnessed during this condition assessment due to the outside temperatures.

Without the system operating, temperature and pressure gauge accuracy could not be confirmed with factory control readings.

F. According to discussion with facility staff, on an 80F outside air temperature day, both chillers are running at 100% capacity.

G. Water quality testing was noted to be done on a monthly basis with reports provided.

4.2.4 Expected Useful Life

A. The expected useful life of a water cooled chiller of this type is typically 20 – 25 years. With proper maintenance and use, this may be extended to 25-30 years.

B. However, because both of the chillers are running at full capacity in the swing and summer months, they have significant additional runtime and are at the end of the useful life cycle.

C. These chillers should be replaced within the next one (1) to two (2) years.

4.2.5 Recommendations:

A. Replace the chillers with new chiller(s) sized for the current load in the building. In addition, provide a redundant 50% capacity chiller for standby or off peak operation.

B. Upgrade all pneumatic controls and sensors associated with the chillers to DDC for monitoring and control.

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C. Factory controls for new chillers are recommended with the ability to tie into future upgrades to the building controls system for monitoring and control

D. Perform a water quality test on water in the system. Recommended to start the system earlier and perform a sampling.

E. Repair damaged insulation on chilled water piping in spot locations.

4.2.6 System Diagram

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4.2.7 Photos

Preventative maintenance for Chiller Tubing. Note tubes are thinning out and effecting heat transfer

Typical chiller Manufacturer controller

Pneumatically controlled Chiller valve actuators Manual on/off switch for chiller enable control

Actuator repair or replacement in July 2012 Chilled Water insulation. Slight damage around manual valves

B1502090.00 13 | 77

4.3 Cooling Towers (CT-1 & CT-2)

4.3.1 General Description

A. Condenser water is provided via two (2) Baltimore Air Coil VTL-137 cooling towers. The cooling towers are not original to the building. Each cooling tower has a nominal tonnage of 137 tons.

B. According to the facility staff, during peak heating days, the cooling towers are incapable of maintaining the condenser water temperature set points. The towers are sized for each of the chillers, 50% of the total cooling load.

C. A chemical treatment system is provided for the condenser water system. Chemicals are replaced as required through standard preventative maintenance.

D. Water quality samples are taken by a third party inspector to confirm proper contaminant levels. A blow down is provided but there is currently no meter on the blow down.

4.3.2 Controls and Operation

A. The cooling towers operate to maintain condenser water temperature set point as set by the requirements for chiller operation.

B. The cooling tower fans are said to operate at the same time during a high load day. Due to the system being constant volume, the fans will operate at full speed at all times.

C. The main MCC for the cooling towers have the ability to operate the fans on a low/high condition.

This was noted to not be operational.

4.3.3 Condition

A. The cooling towers were originally designed for a BAC model VXT-135 (135 tons) and were replaced in kind in 2003. However, as the building load has increased due to the additional inmates and operations, the current towers are incapable of maintaining proper temperatures.

B. Visual wear and rust is evident on the exterior piping to and from the cooling towers.

C. Water quality testing was noted to be done on a monthly basis with reports provided.

4.3.4 Expected Useful Life

D. The expected useful life of a stainless steel cooling tower of this type is typically 18 - 20 years. With proper maintenance and use, this may be extended to 25 years.

E. However, because both of the cooling towers are running at full capacity in the swing and summer months, they have significant additional runtime which will reduce the overall expected life.

F. The cooling towers are…