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Mitigation Actions CoGen Plant: MITIGATION ACTIONS Item Damage Recommended Probable Priority no. Component Vulnerability Potential Mitigation Action Cost 1 to 3 Schedule regular inspection, Roof Remaining roof systems at Proactive inspection, maintenance, repair, and Moderate maintenance, and timely ‐ n/a ‐ RV4 each building replacement are required. 1 replacement of roof systems. Five aerials and two small monitoring units are Upgrade mounts at aerials and Roof Boiler bldg, aerials and mounted to the roof‐edge handrails with Low small equipment that is mounted $2,000 RV6 light equipment inadequate or corroded mounts. High winds will 1 to rails. detach this equipment. Install an aditional guy wire and The guyed stack is missing a guy wire on the west Roof Boiler 8 bldg, large guy anchor at west side of stack. side, making it vulnerable to high winds from the Moderate $7,000 RV7 stainless stack Installation will require new 1 west. framing for guy anchor. Install guy wires and guy anchors The large ducts lack guy wires on the west side, Roof Large ducts at Boiler 8, at west side of ducts. Installation making them vulnerable to high winds from the Moderate $15,000 RV8 lower level will require new framing for guy 1 west. anchors. Tall square ducts can be rocked by hand, and have Rework and upgrade base Roof Tall square vents at Boiler under‐deck mounts that are not rigid. They are Moderate attachments, or add guy wires to $12,000 RV9 8 upper level 1 vulnerable to being toppled by high winds. support upper part of vent stack. Study Only: Engineering or architectural study to wind load The curtain walls are well‐built and in good Glass and aluminum capacity of existing glass and condition, but were designed under a more lenient Cladg panels at curtain wall, aluminum panels, compare to Code. Due to the vast extent of glass on these large High $45,000 CV2 new Boiler & Turbine current Code requirements, 1 buildings, it is prudent to check their resistance to buildings estimate cost of upgraded panels, blow‐out in high winds. and determine cost/ benefit of upgrading panels. Inspect site for loose debris or High winds may drive unsecured items stored at Site Stored items and site unsecured stored items; haul off the site and miscellaneous debris into building Moderate ‐ n/a ‐ SV1 debris debris and tie down stored 1 exits or vehicle lanes, blocking them. materials. 109 Vehicle access is currently limited to two narrow As construction project is routes from Cameron at the northwest, and one completed at northeast part of Site Access drives onto Cogen very narrow route across the south of the site. High site, complete the vehicle entry ‐ n/a ‐ SV2 site 1 Windstorms or other events could readily block drives onto the site from the east vehicle access to the east half of the site. side. The age and condition of the interlocking pavers Roof New Boiler bldg, and thermoplastic membrane roof system make High Replace the roof systems. $540,000 RV2 thermoplastic roof these roof sections vulnerable to tear‐off in high 2 winds. Turbine bldg, paver The age and condition of the interlocking pavers Roof system with modified make these roof sections vulnerable to tear‐off in High Replace the paver system. $135,000 RV3 2 bitumen membrane high winds. The loose roof ballast at the Boiler 8 building may During next re‐roof, use roof Cladg Glass panels at new Boiler be blown off during very high winds and break Moderate system that does not require ‐ n/a ‐ CV3 & Turbine buildings glass curtain wall panels at the new Boiler and 2 loose ballst rock. Turbine buildings. Roof‐top equipment or wall panels lost to high Site Roof‐top equipment, wall See mitigation steps for RV7, RV8, winds may block the limited vehicle lanes at the Moderate ‐ n/a ‐ SV3 panels, curtain wall parts RV9, and CV1. 2 site, impeding emergency access. Roof Admin & Boiler 8, The age and condition of these roofs make them Moderate Replace the roof systems. $100,000 RV1 modified bitumen roofs vulnerable to tear‐off in high winds. 3 Roof Large stacks at Boiler Stack sleeve and mounts are corroded. High winds Replace stack sleeve and corroded Low $6,000 RV5 building could topple stacks, damaging the roof surface. mounts. 3 The white metal wall panels at penthouse and at south addition have insufficient fasteners attaching Repair existing notched girts and Cladg Metal wall panels at Boiler the panels to the girts. Many girts have been Moderate add additional girts and fasteners $28,000 CV1 8 building weakened by notch cuts to accommodate the cross‐ 3 at metal wall panel assemblies. bracing. The wall panels are vulnerable to tear‐off in high winds. Total of Projected Mitigation $890,000 Costs: 110 Lenoir Building: MITIGATION ACTIONS Item Damage Recommended Probable Priority no. Component Vulnerability Potential Mitigation Action Cost 1 to 3 Roof is vulnerable to wind damage at isolated areas Replace broken slate, re‐secure Roof Slate roofs of damage: Cracked, loose, and broken slate and Moderate loose slate, and replace or rework RV1 damaged repair straps. repair straps. $12,000 1 Gaps between slate and coping at gable details make Roof Rework perimeter detail to Slate roofs perimeter slate vulnerable to water infiltration and Moderate RV2 include flashing under edge slates. loss of slates during high winds. Proactive inspection, maintenance, repair, and Perform regular roof inspections Roof Roof systems replacement program will make roofs less vulnerable High and maintenance, and replace ‐ n/a ‐ RV3 1 to wind damage. roof on schedule. Install new, larger fasteners at Both blower and duct have insufficient attachment to Roof Large blower unit and base of blower and duct to the roof, and are vulnerable to becoming detached Moderate $1,000 RV5 duct upgrade their attachment to their 1 during high winds. curbs. Install new, larger fasteners at top Vents may be dismounted during high winds, due to Roof of pedestal. Repair hinges and Fryer exhaust vents inadequate attachment screws, no latch bolts at Low $6,000 RV6 closure hardware and replace all 1 hinged top, and missing bolts at top lid. missing fasteners at lid. Penetration at slate roof has insufficient fasteners. Install new jack supports, with Roof Duct support jacks are not attached to roof. High positive attachment to the roof Large elevated duct Moderate $9,500 RV8 winds could dislodge the duct, damaging the duct and deck. Provide straps to tie duct to 1 both roofs. jacks. Roof Vents have inadequate fasteners to roof curbs and Install new, larger fasteners Exhaust vents Moderate $2,000 RV9 may be torn off by high winds. between vent base and roof curb. 1 Provide deck anchors and guys as Roof Metal stacks with Stacks are loose and not adequately attached; will be Low required to secure the small $6,500 RV12 heaters blown over during high winds. 1 stacks. Roof Hood has inadequate fasteners to roof curbs and may Install new, larger fasteners to tie Metal vent hood Low $1,000 RV11 be torn off by high winds. hood to its curb. 2 111 Metal tables at north end and wooden tables with Cladg Unsecured tables and Secure wooden tables to plaza umbrellas at south end may be driven into building Low $2,000 CV2 signs pavers. 2 by high winds, breaking windows. Site Unsecured wooden Unsecured dining tables outside of hotdog restaurant Secure wooden tables to plaza Low ‐ see CV2 ‐ SV1 tables near south end may be blown into doorway, blocking exit. pavers. 2 Roof Metal screen walls, 5' Mounting screws at louver panels are too small for Install additional mounting Moderate $6,500 RV4 high by 90' long high wind loads on panels. screws and brackets. 3 HVAC condenser units have no connection to roof, Roof Install attachment hardware to tie HVAC units and are vulnerable to sliding off their base during Low $5,500 RV7 units to their curbs. 3 high winds. Roof Rear (southern) 10' of unit has no connection to roof. Install new attachment hardware Large HVAC unit Moderate $6,500 RV10 Very high winds may shift the unit off its curbs. between unit base and roof deck. 3 Trim tree branches that are Cladg Trees near tall High winds may break tree branches or topple trees Low within striking distance of $7,500 CV1 windows that are directly adjacent to Lenoir's large windows. 3 windows. Site Tree branches or fallen trees may block exits during Trees near exits Low Trim trees near exits. $1,500 SV2 high winds. 3 Total of Projected Mitigation Costs: $67,500 112 Mary Ellen Jones Building: MITIGATION ACTIONS Item Damage Recommended Probable Priority no. Component Vulnerability Potential Mitigation Action Cost 1 to 5 Structural supports for panels have been weakened Repair damaged concrete at by corrosion damage at steel connections and column stubs. Install new steel Cladg Precast panels at roof cracked concrete at column stubs. Over time, Very high support brackets and anchor $230,000 CV1 level supports will fail during high winds and a panel will 1 bolts. Protect connections from fall off the building. Structural repairs are required future corrosion. to mitigate this threat. Corrosion damage at support posts & connections, Repair corrosion damage & Roof Metal screen walls, 18' missing bolts, insufficient panel screws. Prone to upgrade connections. Provide Very high $32,000 RV1 high by 85' long failure in high wind. Will damage roof and nearby protection against future 1 equipment. corrosion. Inadequate, corroded, or missing fasteners at base. Install roof curb with structural Miscellaneous, large Roof Improper and corroded guy wires. Units will connection to deck.
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