TIN BLW-EB-AM-102_01102022.pdf

TABLE OF CONTENTS PAGE

CONSULTANT QA/QC SUBMISSION CHECKLIST

REPAIR RECOMMENDATIONS .................................................................................................................................................. 2-4

LOCATION MAP

TIN DRAWING

DESCRIPTION OF TUNNEL

PRELIMINARY REPAIR COST ESTIMATE

NATIONAL TUNNEL INVENTORY AND ELEMENT DATA (NTIED)

TUNNEL CONDITION STATE RATINGS

ACTION ITEMS (FOR ELEMENTS WITH CS1 & CS2 DEFECTS) .................................................................................................... 10-12

GENERAL REMARKS

TIN Description Track & Electric Power Description

TUNNEL ORIENTATION

ACCESS NOTES

Location & Method of Access Access Time ............................................................................................................................................................................ 13-14 De-energization Inspection Procedures and Equipment Used

CRITICAL FINDINGS

ELEMENT CONDITION STATES

INSPECTION FINDINGS & RESULTS

Structural / Civil (S) Elements ................................................................................................................................................. 14-19 Mechanical (M) Elements....................................................................................................................................................... 19-20 Electrical (E) Elements ............................................................................................................................................................ 20-21 Fire Life Safety (FLS) Elements ............................................................................................................................................... 22-23 Rating Notes Photo Log / Sketches / Charts .................................................................................................................................................. 25-26 Photos .................................................................................................................................................................................... 27-45 Sketches ................................................................................................................................................................................. 46-49 Sketch 1: Location Map Sketch 2: TIN Drawing (1 of 2) Sketch 3: TIN Drawing (2 of 2) Sketch 4: Cross Section and Vent Shaft Defect Charts .......................................................................................................................................................................... 50-100 Condition State Summary ................................................................................................................................................... 50-51 Element Defect Charts ........................................................................................................................................................ 52-100 Asset Checklist / Critical Finding Form Quantity Charts ...................................................................................................................................................................... 102-123 Quantity Summary .............................................................................................................................................................. 102-103 Element Defect Charts ........................................................................................................................................................ 104-124 Appendix X – National Tunnel Element Inspection Sheets Appendix X – National Tunnel Inventory & Element Data (NTIED) Sheets Appendix X – Operational System Reports .............................................................................................................................. 127-130

ACTION ITEMS (FOR ELEMENTS WITH CS1 & CS2 DEFECTS) 1

Note: Repair costs are estimates based on MassDOT’s Weighted Average Unit Costs for highway and bridge related work. Preliminary repair costs may vary due to limited access and closure times in the tunnel, the unknown operational functionality of several systems, and other undetermined factors. The MassDOT Weighted Average Unit Costs are from the cost data on the MassDOT website.

Element: 10001 Cast-in-Place Concrete Liner (SF)

Defect Child Element

CS

2 Repair Urgency

Recommended Action

Qty (SF) Repair

Unit Cost Total Cost Code Description

Spall, Honeycombing, Scale

10001.3

– Roof

2 P

Remove remaining delaminated/loose concrete within the spall limits.

Repair area with concrete.

1.0 $34.00 $34.00

1104 Cracking (Conc.)

10001.2

– Left

Wall & 10001.3

- Roof

2 P

Pressure Inject material (grout, resin as specified) into liner as required.

432.0 $175.00 $75,600.00

1109 Leakage (Conc.)

10001.2

– Left

Wall & 10001.3

- Roof

2 P

Monitor to determine leakage frequency and severity. Pressure Inject material (grout, resin as specified) into liner as required.

Monitor for signs of continued leakage.

634.7 $175.00 $111,072.50

Delam./Patched

Area

10001.2

– Left Wall

2 P

Remove remaining delaminated/loose concrete within the limits. Repair the area with concrete

6.0 $34.00 $204.00

Σ 1073.7 - $186,910.50 Element: 10180 Tunnel Niches (EA)

Defect Child Element

CS

2Repair Urgency

Recommended Action

Qty

(EA)

Repair

Unit Cost Total Cost Code Description

Niche cannot accommodate any personnel due to structural obstruction or is occupied by equipment or utilities.

None 1 A Remove and relocate obstructions

2 $1,000.00 $2,000.00

Niche cannot accommodate any personnel due to structural obstruction or is occupied by equipment or utilities.

None 2 P Remove and relocate obstructions.

23 $1,000.00 $23,000.00

Σ 25 - $25,000.00

Element: 10210 Safety Walk (LF)

Defect Child Element

CS

2Repair Urgency

Recommended Action

Qty (LF) Repair

Unit Cost Total Cost Code Description

Steel covers of safety walk are dislodged or missing.

None 1 P Replace damaged and missing utility covers

2 $345.00 $690.00

Steel covers of safety walk are loose or misaligned

None 2 P

Secure or realign loose or misaligned utility covers

4 $345.00 $1,380.00

Spall, Honeycombing, Scale

None 2 P

Remove remaining delaminated/loose concrete within the spall limits.

Repair area with concrete.

34 $34.00 $1,156.00

Σ 40 - $3,226.00 Element: 20110 Utility Rooms (EA)

Defect Child Element

CS

2Repair Urgency

Recommended Action

Qty

(EA)

Repair

Unit Cost Total Cost Code Description

1301 General Condition

None 2 P

Investigate drainage system to determine cause of pooling water

1 $1,000.00 $1,000.00

Σ 1 - $1,000.00

Element: 30304 Tunnel Lighting Fixtures (EA)

Defect Child Element

CS

2Repair Urgency

Recommended Action

Qty

(EA)

Repair

Unit Cost Total Cost Code Description

Component

Supports None 1 A

Replace unstable and missing lighting fixtures and anchorages

2 $155.00 $310.00

Component

Supports None 2 A

Replace loose, broken, and missing lighting fixture anchorages.

15 $155.00 $2,325.00

Σ 17 - $2,635.00 Total Repair Cost for all Elements with CS1 and/or CS2 Defects:

$218,771.50

1An element with a condition state of ≥2.50 (3.00 in this case, because individual defects are given integer condition states) is considered to be in a State of Good Repair. The recommended repairs and cost estimates outlined in the table are intended to increase the defect condition states to ≥3.00 and thus be in a State of Good Repair.

2Repair Urgency:

I = Immediate. The MBTA was notified of the defect during the inspection and corrective action was taken immediately.

Defects coded with an immediate repair urgency are critical findings.

A = ASAP (as soon as possible). The MBTA should take corrective action as soon as possible upon receipt of this inspection report.

P = Prioritize. The MBTA should prioritize this defect and corrective action should be taken at a time to be determined by the MBTA (for example, funds and/or manpower are made available).

Location Map

TIN Drawing

DESCRIPTION OF TUNNEL

TIN BLW-EB-AM-102 is oriented east to west from Station 92+08 to Station 134+50 in the East Boston Tunnel along the westbound track. The tunnel is typically comprised of a single horseshoe shaped reinforced cast-in-place concrete liner. There is an interior portal at the western limits of the TIN near Aquarium Station. There is a utility/pump room designated West Harbor Pump Room at Station 122+95. There is also a ventilation shaft and emergency egress designated Long Wharf Vent Shaft at Station 100+77.

Routine All-Item Inspection: TIN BLW-EB-AM-102: 1/10/2022 Overall Rating: 3.9

Action items that were noted in the this report are summarized below.

Repair Urgency I - Immediate: $0 Repair Urgency A - ASAP: $4,635.00

Repair Urgency P - Prioritize: $214,136.50 Total: $218,771.50

10180 Tunnel Niches (EA)

1101 - Spall, Honeycombing, Scale

2 P 1.0

10001 Cast-in-Place Concrete Liner (SF)

A 2.0

1111 - Delam./Patched Area

2 P 6.0

1104 - Cracking (Conc.) 2 P 432.0

Total Repair Cost for all Elements with CS1 and/or CS2 Defects

1703 - Component Supports

2 A 15.0 $2,325.00

30304 Tunnel Lighting Fixtures (EA)

$2,000.00

1601 - Functions Adequately

2 P 23.0 $23,000.00

1601 - Functions Adequately

1109 - Leakage (Conc.) 2 P 634.7 $111,072.50

$204.00

Estimated Repair Cost

$34.00

$75,600.00

Element Defect CS Repair

Urgency Quantity

PRELIMINARY REPAIR COST ESTIMATE

P 4.0

10210 Safety Walk (LF)

2 P 34.0

20110 Utility Rooms (EA) 1301 - General Condition

2 P 1.0

$1,156.00

1703 - Component Supports

1 A 2.0 $310.00

$1,380.00

$690.002101 - Cover 1 P 2.0

1101 - Spall, Honeycombing, Scale

$1,000.00

2101 - Cover 2

6/14/2023

I.1 Tunnel ID Number

I.2 Line code

I.3 Branch Code

I.4 Stationing Direction

I.5 I.6 I.7 I.8 I.9 42.36628

I.10 Longitude -71.04209

I.11

A.1 Year Built

A.2 Year Rehabilitated

A.3 Total Number of Tracks

A.4 Average Number of Trains per Day

A.5 Year of Average Number of Trains per Day

A.6 Power Section

A.7 Service in Tunnel

C.1 Owner

C.2 Operator

C.3 Users

C.4 On a Revenue Line

G.1 Tunnel Length 04242 Ft

G.2 Minimum Vertical Clearance above Track 10'-8" Ft

G.3 Minimum Total Lateral Clearance 11'-0" Ft

G.4 Minimum Left Clearance 4'-6" Ft

G.5 Minimum Right Clearance 6'-6" Ft

D.1 Routine Inspection Target Date D.2 Actual Routine Inspection Start Date D.3 Actual Routine Inspection End Date D.4 Routine Inspection Interval D.5 Damage Inspection Date D.6 Special Inspection Date

S.1 Number of Bores S.2 Tunnel Shape S.3 Ground Conditions

WE

Rail Transit Tunnel Inventory Items

7.2.2: Identification Items

BLW-EB-AM-102

Blue

MAIN

Transit Station - Start Aquarium Transit Station - End Maverick Stationing - Start 92+08

Stationing - End 134+50 Latitude 42° 21' 59"

-72° 57' 28" Portal-to-Portal Name East Boston Tunnel

7.2.3: Age and Service Items

05012022

T-2B Heavy Rail

7.2.4: Classification Items

7.2.5: Geometric Data Items

7.2.6: Inspection Items

01102022 01102022

7.2.7: Structure Type and Materials Items

Element: 10180 Tunnel Niches (EA)

Element

CS

2Repair Urgency

Recommended Action

Qty

(EA)

Repair

Unit Cost Total Cost Code Description

Niche cannot accommodate any personnel due to structural obstruction or is occupied by equipment or utilities.

None 1 A Remove and relocate obstructions

2 $1,000.00 $2,000.00

Niche cannot accommodate any personnel due to structural obstruction or is occupied by equipment or utilities.

None 2 P Remove and relocate obstructions.

23 $1,000.00 $23,000.00

Σ 25 - $25,000.00

Element: 10210 Safety Walk (LF)

Defect Child Element

CS

2Repair Urgency

Recommended Action

Qty (LF) Repair

Unit Cost Total Cost Code Description

Steel covers of safety walk are dislodged or missing.

None 1 P Replace damaged and missing utility covers

2 $345.00 $690.00

Steel covers of safety walk are loose or misaligned

None 2 P

Secure or realign loose or misaligned utility covers

4 $345.00 $1,380.00

Spall, Honeycombing, Scale

None 2 P

Remove remaining delaminated/loose concrete within the spall limits.

Repair area with concrete.

34 $34.00 $1,156.00

Σ 40 - $3,226.00 Element: 20110 Utility Rooms (EA)

Defect Child Element

CS

2Repair Urgency

Recommended Action

Qty

(EA)

Repair

Unit Cost Total Cost Code Description

General

Condition None 2 P

Investigate drainage system to determine cause of pooling water

1 $1,000.00 $1,000.00

Σ 1 - $1,000.00

Element: 30304 Tunnel Lighting Fixtures (EA)

Element

CS

2Repair Urgency

Recommended Action

Qty

(EA)

Repair

Unit Cost Total Cost Code Description

1703 Component Supports

None 1 A

Replace unstable and missing lighting fixtures and anchorages

2 $155.00 $310.00

Component

Supports None 2 A

Replace loose, broken, and missing lighting fixture anchorages.

15 $155.00 $2,325.00

Σ 17 - $2,635.00 Total Repair Cost for all Elements with CS1 and/or CS2 Defects:

$218,771.50

1An element with a condition state of ≥2.50 (3.00 in this case, because individual defects are given integer condition states) is considered to be in a State of Good Repair. The recommended repairs and cost estimates outlined in the table are intended to increase the defect condition states to ≥3.00 and thus be in a State of Good Repair.

2Repair Urgency:

I = Immediate. The MBTA was notified of the defect during the inspection and corrective action was taken immediately.

Defects coded with an immediate repair urgency are critical findings.

A = ASAP (as soon as possible). The MBTA should take corrective action as soon as possible upon receipt of this inspection report.

P = Prioritize. The MBTA should prioritize this defect and corrective action should be taken at a time to be determined by the MBTA (for example, funds and/or manpower are made available).

GENERAL REMARKS

TIN Description TIN BLW-EB-AM-102 is oriented east to west from Station 92+08 to Station 134+50 in the East Boston Tunnel along the westbound track (see Photo 1 and Sketches 1-2). The tunnel is typically comprised of a single horseshoe shaped reinforced cast-in-place concrete liner. There is an interior portal at the western limits of the TIN near Aquarium Station (see Photo 2). There is a utility/pump room designated West Harbor Pump Room at Station 122+95. There is also a ventilation shaft and emergency egress designated Long Wharf Vent Shaft at Station 100+77 (see Sketch 2 and 4).

The following are elements are included in the scope of the Routine All Item Inspection:

Element 10001 – Cast-in-Place Concrete Tunnel Liner Element 10051 – Concrete Portal Element 10111 – Concrete Slab-on-Grade Element 10180 – Tunnel Niches Element 10200 – Manholes Element 10210 – Safety Walk Element 10230 – Ladders Element 10240 – Concrete Encasements Element 20001 – Drainage System Element 20002 – Pumps Element 20110 – Utility Rooms Element 30303 – Tunnel Lighting Distribution System Element 30304 – Tunnel Lighting Fixtures Element 60601 – Ventilation System Element 60620 – Fans Element 60630 - Standpipes Element 60750 – Emergency Communications System Element 60800 – Tunnel Operations and Security System Element 60805 – Emergency Egress Element 60809 – Cameras Element 60810 – Portal Alert System

Track & Electric Power Description This TIN contains a single westbound track. There is an electrified third rail T-2B Power Section supplying power throughout the length of the TIN.

TUNNEL ORIENTATION

Directional references (left and right) used within this report are made with respect to facing in the upstation direction. Station placards are located at approximately 100’ intervals along the left wall. For locations along the cast-in-place tunnel liner, hands of the clock shall be used to indicate the areas of deterioration, also with respect to facing in the up-station direction.

ACCESS NOTES

Location & Method of Access Right of Way (ROW) access was gained though the Airport Station Truck Pad along the northern fence to the west of the tunnel. Airport Station Truck Pad is approximately 3500’ from the eastern limits of TIN BLW-EB-AM-102.

Access Time Inspection Start Date: 1/10/2022 Inspection End Date: 5/1/2022

The tunnel was accessed during a combination of Non-Revenue (1:30 AM – 4:30 AM) and Diversion (24 hour) requests. Dates accessed are as follows:

Non-Revenue:

1/10/2022 3/1/2022 3/2/2022

Diversion:

4/25/2022 4/26/2022 4/29/2022 5/1/2022

De-energization The electrified third rail was de-energized and tested prior to vendor Hi-Rail equipment and inspection teams accessed the ROW.

Inspection Procedures and Equipment Used Inspection of overhead elements was performed with the use of a hi-rail bucket truck. Inspection of ground and wall elements was performed on foot by walking along the track surface. Utility rooms and tunnel egress were accessed on foot from within the track ROW.

CRITICAL FINDINGS

No critical findings were reported during the inspection. During the diversion, inspectors provided a list of overhead delaminations, spalls, and leakage areas for repair.

ELEMENT CONDITION STATES

Refer to the charts on pages 53-103 for a complete list of condition state ratings (overall and system element) and individual element defects and condition states.

INSPECTION FINDINGS & RESULTS

There is an unsupported rail that deflects under live load between Stations 132+79 and 132+94. The left (north) rail has two (2) missing ties with two (2) ties with rot to the west of the missing ties and three (3) ties with rot to the east of the missing ties (see Photo 3). This results in a 16’ length of unsupported rail. The MBTA was notified via email on May 4, 2022.

There are abandoned/unidentified utilities and utilities servicing power, track, and signals throughout the tunnel.

These have not been quantified under any element. Only field identified in-service elements have been included in the element summaries. Numerous locations of unidentified utility conduits have fractured supports resulting in up to 30’-0” of unsupported conduit that is encroaching on the train envelope. There is a 6-1/2” diameter steel pipe at 11:00 starting at Station 123+20 and continuing beyond the east limit of the TIN. The pipe is not in service.

In this section, only CS1 and CS2 defects are listed. For a full list of defects, refer to the charts described in the section above.

Structural / Civil (S) Elements Tunnel Liner - 10001 - Cast-In-Place Concrete - Condition State: 4.8 There is a reinforced cast-in-place (CIP) concrete liner from Station 92+46 to 134+50. The Left Wall is located between 7:00 and 9:00 o’clock and the roof is located between 9:00 and 12:00 o’clock.

There are scattered areas of damp surfaces, concrete patches, hairline longitudinal, transverse, and map cracks (see Photo 9), some with efflorescence, stalactites and standing drips throughout the tunnel. There are numerous locations of transverse and longitudinal cracks greater than 0.03” wide (see Photo 4), some with active leakage (see Photos 5, 7, and 8) and moderate to heavy efflorescence (see Photo 6), some with rust staining. Several locations of cracks have pressure injection ports, some with leakage (see Photos 7 and 8). There are scattered delaminations up to 3’-0” long x up to 3’-0” wide (see Photo 10) and isolated spalls up to 4’-0” long up to 2’-0” long x up to 7” deep, some with exposed and broken rebar in the roof and walls (see Photos 11 and 12).

• The total quantity of tunnel liner defects is approximately 25,672 SF.

Roof – 10001.3 – CS2 Defects (830.9 sf)

• Sta. 92+50: Pressure injection ports with active drips and efflorescence

• Sta. 93+85: Hairline crack with active drip, pressure injection ports, and efflorescence with stalactites

• Sta. 94+30: Hairline crack with standing drip and efflorescence

• Sta. 95+07: Hairline crack with standing drip and efflorescence

• Sta. 95+60 to 96+10: Up to 0.25” wide longitudinal crack (see Photo 4)

• Sta. 96+10: Up to 0.125” wide crack

• Sta. 96+30: Leakage with pressure injection ports and efflorescence

• Sta. 96+45: Hairline crack with standing drip and efflorescence

• Sta. 96+50: Up to 0.125” wide crack

• Sta. 96+58: Hairline crack with standing drip and efflorescence

• Sta. 97+25: Up to 0.125” wide crack with efflorescence

• Sta. 97+60: Up to 0.18” wide crack

• Sta. 97+85: Up to 0.125” wide crack with efflorescence

• Sta. 98+09: Hairline crack with standing drip and efflorescence with stalactites

• Sta. 98+27: Hairline crack with standing drip and efflorescence

• Sta. 98+41: Up to 0.125” wide crack

• Sta. 98+49: Hairline crack with active drip

• Sta. 98+80: Up to 0.125” wide crack

• Sta. 99+15: Hairline crack with fully saturated surface and efflorescence

• Sta. 99+33: Hairline crack with standing drip

• Sta. 99+90: Holes with standing drip

• Sta. 100+15: Hairline crack with standing drip

• Sta. 100+25: Hairline crack with standing drip and efflorescence

• Sta. 100+47: Hairline crack with standing drip

• Sta. 100+65: Spall with standing drip and efflorescence

• Sta. 101+30: Hairline crack with standing drip and efflorescence with stalactites

• Sta. 101+65: Hairline crack with standing drip

• Sta. 101+70: Hairline crack with standing drip

• Sta. 101+78: Hairline crack with standing drip and efflorescence with stalactites

• Sta. 101+80: Hairline crack with standing drip and efflorescence

• Sta. 101+82: Hairline crack with standing drip and efflorescence

• Sta. 101+99: Hairline crack with standing drip and efflorescence

• Sta. 103+05: Hairline cracks with active drip, pressure injection ports, and efflorescence

• Sta. 103+06: 2’-0” long x 6” wide x 2” deep spall

• Sta. 103+07: Hairline crack with active drip, pressure injection ports, and efflorescence

• Sta. 103+09: Hairline crack with active drip, pressure injection ports, and efflorescence

• Sta. 103+17: Hairline crack with standing drip and efflorescence

• Sta. 103+32: Hairline crack with standing drip and efflorescence

• Sta. 103+34: Hairline crack with standing drip and efflorescence

• Sta. 103+50: Hairline crack with standing drip and efflorescence

• Sta. 104+25: Hairline crack with standing drip and efflorescence

• Sta. 104+35: Hairline crack with standing drip and efflorescence

• Sta. 104+37: Hairline crack with standing drip and efflorescence

• Sta. 104+40: Hairline crack with standing drip and efflorescence

• Sta. 104+43: Hairline crack with standing drip and efflorescence

• Sta. 104+60 to 105+10: Hairline crack with standing drip and efflorescence

• Sta. 105+04: Hairline crack with standing drip and efflorescence

• Sta. 105+05: Hairline crack with standing drip and efflorescence

• Sta. 105+55: Hairline crack with standing drip

• Sta. 105+85: 0.06” wide crack

• Sta. 105+99: Hairline crack with standing drip and efflorescence

• Sta. 106+05: Hairline crack with standing drip and efflorescence with stalactites

• Sta. 106+15: Hairline crack with standing drip and efflorescence with stalactites

• Sta. 106+25: Hairline crack with standing drip and efflorescence

• Sta. 106+45: Hairline crack with standing drip, pressure injection ports, and efflorescence with stalactites

• Sta. 106+55: Hairline crack with standing drip, pressure injection ports, and heavy efflorescence

• Sta. 106+66: Hairline crack with standing drip and efflorescence

• Sta. 106+75: Hairline crack with standing drip, pressure injection ports, and efflorescence

• Sta. 106+95: Hairline crack with standing drip, pressure injection ports, and efflorescence

• Sta. 107+15: Up to 0.06” wide crack

• Sta. 107+85: Hairline crack with standing drip and efflorescence

• Sta. 117+01: Hairline crack with standing drip and pressure injection ports

• Sta. 117+02: Hairline crack with standing drip and pressure injection ports

• Sta. 117+10: Hairline crack with standing drip and pressure injection ports

• Sta. 117+11: Hairline crack with standing drip and pressure injection ports

• Sta. 117+32: Hairline crack with standing drip

• Sta. 117+40: Hairline crack with standing drip and efflorescence with stalactites

• Sta. 117+68: Hairline crack with standing drip and efflorescence with stalactites

• Sta. 117+75: Hairline crack with standing drip and efflorescence with stalactites

• Sta. 118+52: Hairline crack with standing drip and efflorescence

• Sta. 118+55: Hairline crack with standing drip and efflorescence

• Sta. 118+60: Hairline crack with standing drip and efflorescence

• Sta. 118+76: Hairline crack with standing drip and efflorescence

• Sta. 118+80: Hairline crack with standing drip and efflorescence

• Sta. 120+25: Hairline crack with active drip and heavy efflorescence with stalactites

• Sta. 120+39: Hairline crack with active drip and heavy efflorescence with stalactites

• Sta. 120+42: Hairline crack with active drips and fully saturated

• Sta. 120+52: Active drip and efflorescence with stalactites

• Sta. 120+60: Fully saturated surface with active drip

• Sta. 121+60: Hairline crack with standing drip

• Sta. 122+92: Hairline crack with standing drip and efflorescence

• Sta. 123+75: Hairline crack with active drip

• Sta. 124+15: Hairline crack with standing drip and efflorescence

• Sta. 125+05: Hairline crack with standing drip and efflorescence with stalactites

• Sta. 125+42: Hairline crack with standing drip and efflorescence with stalactites

• Sta. 125+65: Hairline crack with standing drip and efflorescence with stalactites

• Sta. 126+75: Up to 0.04” wide crack

• Sta. 127+10: Hairline crack with fully saturated surface and standing drip

• Sta. 127+15: Hairline crack with standing drip and efflorescence with stalactites

• Sta. 127+18: Hairline crack with standing drip and efflorescence with stalactites

• Sta. 127+27: Hairline crack with standing drip and efflorescence with stalactites

• Sta. 127+30: Up to 0.03” wide crack

• Sta. 127+61: Hairline crack with standing drip and efflorescence with stalactites

• Sta. 129+00 to 130+00: Up to 0.08” wide crack

• Sta. 129+40: 2’-6” long x 1’-2” wide x 1.5” deep spall with standing drip

• Sta. 129+75: 1’-4” long x 1’-4” wide x 1.5” deep spall with standing drip and efflorescence with stalactites

• Sta. 130+03 to 131+00: Up to 0.06” wide crack

• Sta. 130+04: Up to 0.10” wide crack

• Sta. 130+40: Active drip at 1 drop/minute

• Sta. 130+75: Active drip at 1 drop/minute

• Sta. 130+90: Hairline crack with standing drip and efflorescence

• Sta. 131+25: Hairline crack with standing drip and efflorescence

• Sta. 131+40: Hairline crack with leakage

• Sta. 131+60: Hairline crack with leakage

• Sta. 131+77: Two (2) hairline cracks with leakage

• Sta. 131+93: Hairline crack with leakage

• Sta. 133+03: Hairline crack with leakage

• Sta. 133+50: Hairline crack with leakage

• Sta. 133+60: Hairline crack with leakage

• Sta. 133+84: Hairline crack with leakage

• Sta. 134+28: Hairline crack with standing drip and efflorescence Left (Exterior) Wall – 10001.2 – CS2 Defects (234.8 sf)

• Sta. 92+50: Hairline crack with active leakage, epoxy injection ports, and efflorescence (see Photo 8)

• Sta. 92+51: Hairline crack with active leakage, epoxy injection ports, and efflorescence

• Sta. 92+52: Hairline crack with active leakage, epoxy injection ports, and efflorescence

• Sta. 92+60: Hairline crack with active leakage

• Sta. 92+70: Hairline crack with active leakage

• Sta. 93+35: Hairline crack with active leakage

• Sta. 95+45: Hairline crack with active leakage

• Sta. 99+30: Hairline crack with leakage and fully saturated surface (see Photo 5)

• Sta. 100+19: Active leakage of 1 drop/minute

• Sta. 100+42: Saturated surface

• Sta. 100+83 to 101+07: Hairline crack with active drip and heavy efflorescence with stalactites

• Sta. 101+18: 1’-1” long x 6’-1” wide x 1” deep spall with rust stains

• Sta. 105+60: Hairline crack with saturated surface

• Sta. 105+83: Hairline crack with saturated surface

• Sta. 106+45: Hairline crack with saturated surface

• Sta. 106+60: Hairline crack with saturated surface

• Sta. 106+67: Hairline crack with saturated surface

• Sta. 106+80: Hairline crack with saturated surface

• Sta. 108+42: Hairline crack with active leakage of 1 drop/minute

• Sta. 109+75: Hairline crack with saturated surface

• Sta. 111+69: Hairline crack with saturated surface

• Sta. 113+10: 2’-0” long x 2’-0” wide delamination with leakage

• Sta. 114+20: 2’-0” high x 3’-0” long delamination

• Sta. 115+80: Hairline crack with leakage

• Sta. 118+70: Three (3) cracks with leakage and efflorescence

• Sta. 124+60: Leakage within niche

• Sta. 125+50: Hairline crack with leakage and efflorescence

• Sta. 129+45: Two (2) spalls up to 2’-0” long x up to 2’ wide x up to 2.5” deep with active leakage and efflorescence

• Sta. 131+41: Hairline crack with saturated surface

• Sta. 132+90: Hairline crack with leakage and efflorescence (see Photo 6)

• Sta. 133+95: Hairline crack with saturated surface and efflorescence

Concrete Portal – 10055 – Condition State: 4.6 There is one (1) concrete portal labeled the Aquarium East Interior Portal at the west limits of the tunnel at Station 92+46. The concrete is hidden by a tile façade (see Photo 2).

The portal has an isolated saturated surface with mortar breakdown between tiles (see Photo 13).

• The total quantity of Concrete Portal defects is approximately 8 SF.

Concrete Slab-on-Grade – 10111 – Condition State: 5.0 The concrete slab-on-grade is hidden by ballast throughout the limits of the tunnel (see Photo 1).

There are no notable deficiencies to the Concrete Slab-on-Grade condition.

Tunnel Niches – 10180 – Condition State: 4.3 There are two hundred (200) niches total along the Left Wall. The niches are typically spaced 20’ on center throughout the tunnel limits.

There is a horizontal pipe that is part of the drainage system from Station 122+95 to 134+50 above the concrete utility bank. This does not make niches inaccessible but does impede access.

There are several locations of niches obstructed by junction boxes (see Photo 14), construction equipment, and debris; and isolated locations with damaged inaccessible niche signs. Obstructed niches typically have signage at the niche.

• The total quantity of Tunnel Niche defects is approximately 86 EA.

CS1 Defects (2 EA)

• Sta. 123+22 to 123+40: Two (2) consecutive niches are obstructed by electrical boxes. This results in a 70 foot section of the tunnel without adequate niches from 123+00 to 123+70 (see Photo 14).

CS2 Defects (23 EA)

• Sta. 92+75: Junction box in niche

• Sta. 93+14: Junction box in niche

• Sta. 93+75: Junction box in niche

• Sta. 94+18: Junction box in niche

• Sta. 96+75: Inaccessible niche

• Sta. 100+15: Junction box with missing cover in niche

• Sta. 101+75: Junction box in niche. Inaccessible niche sign damaged

• Sta. 102+17: Junction box in niche

• Sta. 103+17: Junction box in niche

• Sta. 107+20: Junction box in niche

• Sta. 108+60: Junction box in niche

• Sta. 114+05: Junction box in niche

• Sta. 114+85: Junction box in niche

• Sta. 116+22: Electrical box in niche

• Sta. 118+80: Junction box in niche

• Sta. 122+82: Junction box in niche with exposed wires

• Sta. 123+80: Junction box in niche

• Sta. 124+43: Junction box in niche

• Sta. 126+65: Junction box in niche

• Sta. 130+45: Old equipment in niche

• Sta. 130+85: Junction box in niche with loose wires

• Sta. 132+25: Junction box with missing cover in niche

• Sta. 134+45: Inaccessible niche

Manholes – 10200 – Condition State: 4.9 There are twelve (13) electrical distribution manholes located between the Eastbound and Westbound Track. The manholes are quantified as TIN 102 elements for this report.

There are isolated cracks and minor spalls to the encasements (see Photo 15).

• The total quantity of Manhole defects is approximately 1 EA.

Safety Walk – 10210 – Condition State: 3.7 This element is being used to code a concrete utility bank along the left wall of the tunnel liner. There are rectangular utility covers typically spaced every 200 feet.

The utility bank has isolated spalls up to 50’ long x up to 3’-0” high x up to 8” deep, some with exposed conduit (see Photo 16). The utility covers have widespread moderate to heavy rust. There are also isolated missing utility covers (see Photo 17) and scattered utility covers with gaps up to 3-1/2” between the utility cover and the utility bank (see Photo 18).

• The total quantity of Safety Walk defects is approximately 4242 LF.

CS1 Defects (22 lf)

• Sta. 100+10: Missing cover with exposed conduits (see Photo 17)

• Sta. 108+70: Dislodged cover

CS2 Defects (129 lf)

• Sta. 92+81: Cover loose

• Sta. 96+23: Up to 2.5” gaps below cover of safety walk with 7’ long spall (see Photo 18)

• Sta. 104+00 to 104+60: Spall with conduit exposed at Sta. 104+20

• Sta. 130+45: Cover misaligned with up to 3.5” gap. Cover is stable

• Sta. 132+90 to Sta. 133+24: Spalls up to 3’-0” high x 8” deep with exposed conduits (see Photo 16)

Ladders – 10230 – Condition State: 5.0 There is one (1) ladder within the tunnel at the beginning of the TIN. The ladder provides on-foot access to the track from the Aquarium Station Platform. There are no defects noted to the ladder.

There are no notable deficiencies to the Ladder condition.

Concrete Encasement – 10240 – Condition State: 4.9 There are six (6) concrete encased columns along the left wall at Long Wharf Vent Shaft intake Room from Station 100+83 to Station 101+30.

• The total quantity of Concrete Encasement defects is approximately 15 SF.

CS2 Defects (2.5 lf)

• Sta. 100+91: Two (2) spalls up to 5’-0” wide x 3” long x 5” wide edge with exposed and debonded rebar (see

Photo 19)

• Sta. 100+98: Two (2) spalls up to 4” high x up to 7” wide x up to 2” deep with exposed and debonded rebar

Mechanical (M) Elements Drainage System – 20001 – Condition State: 3.0 The following information has been gathered from field inspection and the Massachusetts Bay Transportation Authority (MBTA) Pump Room Assessment Report January 2021: Water from the tracks drains to a wet well below the floor of the West Under Harbor Pump Room at Sta. 122+95 via a 4” carrier pipe. From there, the water is drawn through a 4” ductile pipe into one of the two (2) centrifugal pumps. The pump discharges the water through 4” discharge connections, which combine into one common 6” ductile iron discharge pipe. From the West Under Harbor Pump Room the discharge pipe is anchored along the left wall above the utility bank and continues upstation. The discharge is sent to the sewer discharge point.

The discharge pipes at the West Harbor Pump Room typically have light to moderate surface corrosion. There are scattered locations of moderate to heavy rust and efflorescence build up to drainage pipes (see Photo 20).

• The total quantity of Drainage System defects is 1 EA.

Pumps – 20002 – Condition State: 4.2 The following information has been gathered from field inspection and the Massachusetts Bay Transportation Authority (MBTA) Pump Room Assessment Report January 2021: Both pumps in the West Harbor Pump Room are in poor condition with rust noted (see Photo 21).

• The total quantity of Pump defects is 2 EA.

Utility Rooms – 20110 – Condition State: 3.5 There are six (6) utility rooms within the tunnel.

Long Wharf Vent Shaft (Station 100+77) (see Sketch 4):

• Air Intake/Exhaust Room, 1st Floor (track level)

• Fan Damper Room, 2nd Floor

• Fan Housing Room, 3rd floor

• Exhaust Plenum Room, 4th floor

• Electrical Room, 4th floor

Pump Room (Station 122+95):

• West Under Harbor Pump Room (track level)

The Fan Damper Room floor has no notable deficiencies.

The Fan Housing Room walls have scattered saturated surfaces and areas of scale on the Southeast wall. The southeast exhaust vent is caution taped off. One overhead light fixture is not functioning with 1/2 anchors disconnected.

The Electrical Room has a corroded sump pump with water ponding. There are also diagonal and vertical cracks with efflorescence up to 10’ high x up to 1/2” wide to the east wall at the south end (see Photo 22). There is also a missing fire extinguisher, and the exit sign was not functioning.

The Exhaust Plenum Room walls have widespread cracking, small spalls, light to moderate efflorescence and rust staining. There is debris and removed grating near the exhaust vents.

The West Under Harbor Pump Room has scattered hairline cracks on the roof and walls, several with moderate to heavy efflorescence and rust staining. There is a hairline crack on the sloped ceiling at the west wall with heavy efflorescence, rust staining, stalactites, and standing drip (see Photo 24). A drip pan has been installed on the west wall to divert the leakage from junction boxes, however the junction boxes still have heavy corrosion. There are also five (5) non-functioning lights out of ten (10) total lights.

• The total quantity of Utility Room defects is 5 EA.

CS2 Defects (1 ea)

• The Air Intake/Exhaust Room is at track level. The room has ponded water up to 1” deep and heavy efflorescence and rust staining on the walls (see Photo 23). The access door is heavily corroded with up to 100% loss to the lower 1’-0” of the door.

Electrical (E) Elements No operational Electrical Element information was available or conducted during the time of this inspection.

Information provided is gathered from visual and hands-on inspection.

Tunnel Lighting Distribution System – 30303 – Condition State: 3.0

There are typically five (5) wires at 10:00 o’clock throughout the tunnel. The top two (2) wires provide distribution to the light fixtures. There are typically utility conduit supports with two (2) anchorages in the tunnel liner. At Station 122+85 the typical lighting system ends. It is spliced and attached to an antenna cable at 11:00 o’clock. It continues at its typical location at 124+50.

There are numerous non-functioning fixtures throughout the tunnel. Isolated non-functioning fixtures have a newer lighting fixture type installed adjacent to the non-functioning fixture. There are numerous broken conduit supports throughout the tunnel (see Photo 25). There are isolated missing conduit supports, some locations have conduits zip-tied to other supports (see Photo 12). There is a transverse overhead conduit that is unsupported and rests on the longitudinal conduit at Station 100+79. There are also isolated lighting conduits with missing protective sleeves resulting in exposed wiring.

Hanging wires due to broken utility supports that were encroaching on the train envelope were reported to the MBTA during the time of this inspection.

• The total quantity of Lighting Distribution System defects is 1 EA.

Tunnel Lighting Fixtures – 30304 – Condition State: 3.8 There are two hundred forty seven (247) fluorescent lighting fixtures located on the left wall, as described in Tunnel Lighting Distribution System – 30303. The lights are typically spaced 20’ apart.

The lighting fixture anchorages typically have light to moderate corrosion. There are isolated lights with one (1) of two (2) supports disconnected, and some lights are loose or unstable (see Photo 26). There are scattered lights with missing or cracked lenses, and some with missing bulbs. There are also scattered fixtures with rust to the light fixture housing with up to 100% section loss (see Photo 27).

Lighting fixtures with one (1) of two (2) missing anchorages were reported to the MBTA during the time of this inspection.

• The total quantity of Tunnel Lighting Fixture defects is 247 EA.

CS1 Defects (2 ea)

• Sta. 102+22: Light fixture with 100% loss to one (1) of two (2) anchorages. Unstable connection (see Photo 26)

• Sta. 102+62: Light fixture with 100% loss to one (1) of two (2) anchorages. Unstable connection

CS2 Defects (15 ea)

• Sta. 92+85: Light fixture with missing lens and heavy efflo on bulb. Areas of up to 100% loss to housing

• Sta. 93+85: Light fixture with 100% loss to one (1) of two (2) anchorages. Missing bulb. Areas of up to 100% loss to housing with exposed wires

• Sta. 101+80: Up to 100% loss to one (1) of two (2) anchorages

• Sta. 103+05: Up to 100% loss to one (1) of two (2) anchorages

• Sta. 105+05: Up to 100% loss to one (1) of two (2) anchorages

• Sta. 111+70: Missing lens and bulb with areas of up to 100% loss to housing and exposed wires

• Sta. 113+93: Broken bulb, missing lens, and areas of up to 100% loss to housing (see Photo 27)

• Sta. 114+54: Up to 100% loss to one (1) of two (2) anchorages

• Sta. 117+10: Missing lens and bulb with areas of up to 100% loss to housing and exposed wires

• Sta. 117+30: Missing lens and bulb with areas of up to 100% loss to housing and exposed wires

• Sta. 117+52: Missing lens and bulb with areas of up to 100% loss to housing and exposed wires

• Sta. 117+72: Missing lens and bulb with areas of up to 100% loss to housing and exposed wires

• Sta. 117+92: Missing lens and bulb with areas of up to 100% loss to housing and exposed wires

• Sta. 123+00: Missing lens and bulb with areas of up to 100% loss to housing and exposed wires

• Sta. 123+65: Missing lens and bulb with areas of up to 100% loss to housing and exposed wires

Fire Life Safety (FLS) Elements No operational Fire Life Safety information was available or conducted during the time of this inspection. Information provided is gathered from visual and hands-on inspection.

Ventilation System – 60601 – Condition State: 3.0 The ventilation system is located at the Long Wharf Ventilation Shaft located at Station 100+77. There are dampers in the roof on the air intake/exhaust room at track level. There are two (2) levels supporting vertical fans EF-1 and EF-2.

The fourth level leads to the exhaust plenum and to surface level (see Sketch 4).

Two (2) of the four (4) dampers were covered with timber, and one (1) of the four dampers had missing grating. The grating from the airway to the track is heavily corroded with bent and missing bars and section loss to bars up to 100% (see Photo 28).

• The total quantity of Ventilation System defects is 1 EA.

Fans – 60620 – Condition State: 5.0 There are two (2) fans within the Long Wharf Ventilation Shaft. The fans are labeled EF-1 and EF-2 (see Photo 29).

No physical deficiencies were noted. The fan operation was not tested as part of this inspection.

Standpipes – 60630 – Condition State: 4.0 There is a horizontal fire standpipe system at 9:00 with valved vertical pipe connections labeled B-5B spaced approximately 100’ on the left wall of the tunnel.

There are isolated locations of efflorescence buildup and light to moderate corrosion on the standpipes (see Photo 30).

• The total quantity of Standpipe defects is 1 EA. Standpipe operation was not tested as part of this inspection.

Emergency Communications System – 60750 – Condition State: 4.0 There is a wireless communication system platform mounted to the north wall of the Long Wharf Egress below the stairs on the second floor. There is a wireless antenna mounted to the tunnel liner wall.

The wireless communication system platform cage door within the Long Wharf Egress is open. The cage has scattered light to moderate rust (see Photo 32).

• The total quantity of Emergency Communication system defects is 1 EA. The emergency communication system was not tested as part of this inspection.

Tunnel Operations and Security System – 60800 – Condition State: 3.0 There are two (2) CCTV cameras, one (1) on the left wall at Station 92+53 at approximately 10:00 o’clock, and one (1) at the top of the egress stairs at street level. There are four (4) telephones on the left wall with blue strobe lights attached. There are two (2) keypads, one (1) on the left wall at Station 92+50 at approximately 9:00 o’clock (see Photo 8), and one (1) at the top of the egress stairs at street level.

Inspectors tried the telephones and were unable to get a dial tone. The junction box connecting to the telephone at Station 128+43 is missing the cover with exposed wires (see Photo 31). There is isolated light rust to the Key Pad conduit at Station 92+52 (see Photo 8).

• The total quantity of Tunnel Operations and Security System defects is 1 EA.

Emergency Egress – 60805 – Condition State: 3.0

There is one (1) emergency egress within the tunnel. The Long Wharf Emergency Egress is located at Station 100+76 and has eight (8) flights of stairs from track level to the egress with one hundred and twenty-six (126) stairs noted on the door of the egress. There are nineteen (19) way-finding signs for the emergency egress on the tunnel liner walls typically spaced every 200 feet.

The door from the track to the egress has two (2) holes up to 12” wide x 2” high (see Photo 33). The ceiling of the egress has scattered cracks up to 1/2” wide with heavy efflorescence and stalactites, some with active drip up to 60 drops/minute (see Photo 34). The egress stairs typically exhibit moderate to heavy scale (see Photo 35) and the railings have heavy corrosion with areas of up to 100% section loss to the west railing at track level (see Photo 36).

The vertical steel posts supporting the stairs at track level have section loss to the flange up to 6” high x 2” wide x full depth with ponding water (see Photo 37).

• The total quantity of Emergency Egress defects is 1 EA.

Cameras – 60809 – Condition State: 5.0 There are two (2) cameras in the TIN, one (1) at 10:00 o’clock at Station 92+53, and one (1) at the top of the egress stairs at street level.

There are no notable deficiencies to the cameras.

Portal Alert System – 60810 – Condition State : 5.0 There is a portal alert system at the Aquarium Station East Interior Portal at Station 92+08.

There are no notable deficiencies to the Portal Alert System.

PHOTO LOG / SKETCHES / CHARTS PAGE

PHOTO 1 - General Photo - Sta. 134+00: Typical tunnel liner (looking east to limits of TIN 102) PHOTO 2 - General Photo - Sta. 92+08: General Portal (looking east from limits of TIN 102) PHOTO 3 – Track Deficiency - Sta. 132+79 to 132+94: 2 missing ties between 5 rotten ties PHOTO 4 - 10001 Cast-in-Place Concrete Liner - Roof Defect - CS2 – Sta. 95+80: 1/4” W crack with spall PHOTO 5 - 10001 Cast-in-Place Concrete Liner – Left Wall Defect - CS2 – Sta. 99+30: Crack with leakage PHOTO 6 - 10001 Cast-in-Place Concrete Liner – Left Wall Defect - CS2 – Sta. 132+90: Heavy efflo w/ leakage .. 29 PHOTO 7 - 10001 Cast-in-Place Concrete Liner – Roof Defect – CS3 – Sta. 99+25: Crack w/ efflo and leakage PHOTO 8 - 10001 Cast-in-Place Concrete Liner – Left Wall Defect - CS2 – Sta. 92+50: Leakage with PIPs PHOTO 9 - 10001 Cast-in-Place Concrete Liner - Left Wall Defect – CS4 – Sta. 101+75: Map cracking w/ efflo PHOTO 10 - 10001 Cast-in-Place Concrete Liner - Roof Defect – CS4 – Sta. 111+05: Delamination PHOTO 11 - 10001 Cast-in-Place Concrete Liner - Roof Defect – CS4 - Sta. 114+66: Spall PHOTO 12 - 10001 Cast-in-Place Concrete Liner - Roof Defect – CS4 - Sta. 123+75: Spall PHOTO 13 – 10051 Concrete Portal – CS3 – Sta. 92+08: Saturated surface with efflo and mortar breakdown PHOTO 14 – 10180 Tunnel Niches – CS1 – Sta. 123+40: Inaccessible niche resulting in 70’ stretch w/o niche PHOTO 15 – 10200 Manholes – CS5 – Sta. 95+28: Typical manhole between tracks PHOTO 16 – 10210 Safety Walk – CS2 – Sta. 132+90: Spall with exposed conduit PHOTO 17 – 10210 Safety Walk – CS1 – Sta. 100+10: Missing safety walk cover PHOTO 18 – 10210 Safety Walk – CS2 – Sta. 96+23: Gap between safety walk cover and face of safety walk PHOTO 19 – 10240 Concrete Encasement – Columns – CS2 – Sta. 100+91: Spalls w/ exp and debonded bar PHOTO 20 – 20001 Drainage System – CS3 – Sta. 132+90: Pipe with hvy efflo and mod to hvy corrosion PHOTO 21 – 20002 Pumps – CS3 – Sta. 122+95 – West Harbor Pump Room: Pump 2 and Pump 1 with rust PHOTO 22 – 20110 Utility Rooms – CS3 – Sta. 100+77: Crack with rust bleeding on CMU wall PHOTO 23 – 20110 Utility Rooms – CS2 – Sta. 100+77: Ponded water w/ efflo and rust staining on walls PHOTO 24 – 20110 Utility Rooms – CS4 – Sta. 122+95: Cracking with heavy efflo, rust staining, and leakage PHOTO 25 – 30303 Tunnel Lighting Distribution System – CS3 – Sta. 108+05 Broken lighting cable support PHOTO 26 – 30304 Tunnel Lighting Fixture – CS1 – Sta. 102+62: 1/2 anchorages detached. Light unstable PHOTO 27 – 30304 Tunnel Lighting Fixture – CS2 – Sta. 113+93: Heavy rust, section loss and broken bulb PHOTO 28 – 60601 Ventilation System – CS4 – Sta. 100+83: Grates w/ heavy corrosion, broken & bent bars PHOTO 29 – 60620 Fans – CS5 – Sta. 100+77: General Photo of Fans EF-1 (left) and EF-2 (right) PHOTO 30 – 60630 Standpipe – CS4 – Sta. 133+10: Efflo buildup on standpipe PHOTO 31 – 60800 Tunnel Operations and Security System – CS3 – Typical telephone w/ no dial tone PHOTO 32 – 60750 Emergency Communication System – CS4 – Sta. 100+70 – Egress – Wireless Comm. Cage .. 42 PHOTO 33 – 60805 Emergency Egress – CS3 – Sta. 100+77: Two holes in egress door PHOTO 34 – 60805 Emergency Egress – CS3 – Sta. 100+77: Cracks up to 1/2” W w/ heavy efflo and leakage PHOTO 35 – 60805 Emergency Egress – CS3 – Sta. 100+77: Egress stairs typically moderate to heavy scaling PHOTO 36 – 60805 Emergency Egress – CS3 – Sta. 100+77: Railing with heavy rust and section loss PHOTO 37 – 60805 Emergency Egress – CS3 – Sta. 100+77: Hvy rust w/ section loss to girder supporting stairs 45 SKETCH 1 – Location Map SKETCH 2 – TIN Drawing (1 of 2) SKETCH 3 – TIN Drawing (2 of 2) SKETCH 4 – Cross Section and Vent Shaft CHART 1 – Condition State Summary ...................................................................................................................... 50-51 CHART 2 – 10001 Cast-in-Place Concrete Tunnel Liner ........................................................................................... 52-80 CHART 3 – 10051 Concrete Portal CHART 4 – 10111 Concrete Slab-on-Grade CHART 5 – 10180 Tunnel Niches

CHART 6 – 10200 Manholes CHART 7 – 10210 Safety Walk CHART 8 – 10230 Ladders CHART 9 – 10240 – Concrete Encasement CHART 10 – 20001 Drainage System CHART 11 – 20002 Pumps CHART 12 – 20110 Utility Rooms CHART 13 – 30303 Tunnel Lighting Distribution System CHART 14 – 30304 Tunnel Lighting Fixtures CHART 15 – 60601 Ventilation System CHART 16 – 60620 Fans CHART 17 – 60630 Standpipes CHART 18 – 60750 Emergency Communication System CHART 19 – 60800 Tunnel Operations and Security System CHART 20 – 60805 Emergency Egress CHART 21 – 60809 Cameras CHART 22 – 60810 Portal Alert System Asset Checklist / Critical Finding Form CHART 23 – Quantity Charts Summary ...................................................................................................................