fnsb project nomination form submission date: august 26

Big Dipper Ventilation System Replacement | 26/08/2021 | pg 1

FNSB Project Nomination FormSubmission Date: August 26, 2021

Nominator Contact Information Name: Steve Taylor

Organization: FNSB Parks & Recreation Department

Affected Department: Parks and RecreationPhone: 907-459-1068Email: [email protected]

Address: 1920 Lathrop St

Project Information Proposed Name: Big Dipper Ventilation System

Replacement

Project Description:

As recommended in the 2018 Big Dipper Building Condition Inventory Survey this project

proposes to replace the building ventilation system

which is end of life. The project will also install a

dehumidifier which reduces other long-term maintenance

costs.


Location:

Safety Code and ComplianceReduce or Eliminate health risk: Yes

Explanation: Due to a lack of a functional dehumidifier, during periods of

high outdoor humidity condensation forms on the

ceiling beams and drips onto the ice forming stalagmites. These stalagmites can be a safety hazard to ice skaters

and must be removed by hand.Current Facility Condition: Fair

Explanation: Overall Dipper is in good condition, however the

ventilation system is reaching its end of life (per 2018

Building Condition Inventory Survey)


Improves Accessibility Compliance: NoExplanation:

Facility Condition Facility Age since construction: 41 + years

Replace an existing facility: YesCurrent condition: Poor

Facility Notes: Ventilation system is reaching its end of life per the 2018

Building Condition Inventory Survey.

Project FundingStatus of Project Funding: No Funding

Source of Secured Funding: N/AUnknown Funding Notes:

Funding Sponsors: NoMatch Requirement Info:

Match Amount Info:Project Funding Notes:

Organization Contribution: YesSource of Funds Contributed: Borough CIP funding

Project Funding Attachment:

Environmental InfoContamination Cleanup: No

Cleanup Notes:


Improvements to Air Quality:Air Quality Notes:

Reduction of Stormwater: NoStormwater Notes:

Improvements to Groundwater: NoGroundwater Notes:

Improvements to Energy Efficiency:

Yes

Energy Notes: It there are modest efficiency gains to be had with newer

systems.

Public UsageImproves Customer Experience: Yes

Explanation: There are some occupiable spaces which are not currently ventilated. A dehumidifier will

lead to fewer cancelled ice reservations in the mornings.

Served by Fixed Transit Route: YesExplanation: Purple and Orange lines serve

the Big DipperImproves Facility Capacity: No

Explanation:

Ongoing Maintenance CostReduction to Utility Expenses:

Explanation:Reduction to Maintenance

Expenses: Yes


Explanation: Less staff time chipping ice stalagmites, paint on ceiling beams will last longer. Newer systems typically require less

unplanned maintenance.Extends Existing Facility Life: Yes

Explanation: Yes, in order for the facility to function into the future,

mechanical systems will need to be replaced.

Planning and DesignProject has Complete Designs: No

Explanation:Scope or Engineering Studies

Done: Yes

Explain Work Done to Date: The Building Condition Inventory Survey defines the

scope in broad terms.

Budget/Population/SupportImpact on Operation Budget: Decrease the operating budget

Explanation:

Dehumidifier will reduce staff time spent hand chipping ice stalagmites to create a safe

skating surface. Reduced cancellations will lead to

additional revenue.Type of Population Served Regional areawide users


Description of Needs Met:Dipper is used by residents

from all areas of the Borough and neighboring interior

Alaska communities.Applicable Form of Support:

Explanation of Levels of Support:Meets Goals or Objectives: Yes

Explanation:

2018 Building Condition Inventory Survey, pg Dip-34, Item M1, Replace ventilation

system; FNSB Comp Plan, Environment, Goal 1, Strategy

4, Action B: Provide quality and economical public services facilities.....maintain existing

facilities.:Project Support Attachments:

Project CostEstimated Cost: 2,250,000

Explanation: Large public facilities require periodic investment as old systems wear out. Existing

ventilation system is inadequate for facility needs.

17-PWDPRJ-01Fairbanks North Star Borough

Building Condition Inventory Survey

January 22, 2018

Big Dipper Ice Arena (DIP)Survey Report

The useful age of mechanical systems depends on many factors such as susceptibility to corrosion and wear over time, change in building use, codes or standards, obsolescence, or approaches that use more energy than necessary. The sustainability of mechanical systems is not necessarily intuitive. For instance, an air-handling unit is typically constructed of parts that can be obtained from multiple sources allowing individual pieces to be replaced as they fail, essentially giving this type of equipment an indefinitely long life. This is not the case for more complex systems like refrigeration equipment, which have a greater reliance on factory support. Based on our experience with mechanical systems in the Fairbanks area, the list below indicates the ages of concern for various types of mechanical systems.

Age of Concern

Equipment Condition at Big Dipper Ice Arena The mechanical systems within the building are well maintained, with any obvious issues that might cause premature failure of mechanical systems being addressed.

Ventilation System The ventilation fans installed during the 1981 remodel were constructed by the manufacturer, Pace, which was known for making high quality and durable fans for heating and ventilation applications. While Pace is no longer in business, because the components used within the fan’s construction are commonly available, replacement parts are easily obtained, so fans are able to remain in operation provided their structural components remain in working condition. Since original construction, the main air handling unit, AHU-1, that serves the arena had the controls sequence and system modified

Cast Iron Waste Piping: 50 years

Galvanized Domestic Water Piping: 30 years

Copper Domestic Water Piping: No failures due to age known in Fairbanks area, 50 – 70 years expected.

Sprinkler System Piping: 50 years

Single Wall Fuel Tanks: 30 years

Stainless Steel Lined Double Wall Boiler Stacks:

30 years

Hydronic Heating System Piping: Depends on maintenance 50 – 100 years

Cast Iron Sectional Boilers: Indefinite life on castings. Burner’s life 30 years. Consider replacement if factory support not available.

Fans and Air Handling Equipment: Indefinite life if original was high quality.

Refrigeration Units (A/C): 20 year expected life, 40 years possible. R22 no longer legal to manufacture after 2020.

Domestic Water Tanks: Concrete lined or SS tanks have indefinite life, others are 10-20 years.

Hydronic Pressure Tanks: 20 - 30 years

Pumps: Depending on availability of replacement parts, generally greater than 30 years

DIP-20 BETTISWORTH NORTH ARCHITECTS AND PLANNERS | JANUARY 2018

FAIRBANKS NORTH STAR BOROUGH (17-PWDPRJ-01) BUILDING CONDITION INVENTORY SURVEYBIG DIPPER ICE ARENA

to include a control methodology to minimize space humidity. Based on user comments, it appears that humidity control is no longer functioning as intended. The controls and devices associated with humidity control should be recalibrated and recommissioned to evaluate its effectiveness.

For the locker rooms, while the ventilation rates indicated on the original drawings exceed current code requirements, due to the high humidity environment the exhaust diffusers and ductwork show internal lint buildup and corrosion. The main exhaust ductwork near the exhaust fans do not show signs of corrosion or lint buildup. From observable information, the extent of corrosion appears limited to the branch ductwork connected to the locker room exhaust diffusers, which is in need of replacement.

Heating and Refrigeration System

The heating system for the Big Dipper is configured to burn either natural gas or fuel oil. A 5,000-gallon fuel oil storage tank is buried outside of the mechanical room near the dry-coolers associated with the refrigeration system. The fuel oil storage tank is likely a single walled tank, and has exceeded its expected usable lifespan.

The central heating boiler burners are duel-fueled burners manufactured by Gordon-Piatt with rated capacities up to 2,520 MBH. Gordon-Piatt is no longer in business and a reliable source for repair parts is unknown. While currently operational, as time passes burner parts will need to be replaced and it is unknown when there might be a shortage of replacement parts. It is likely the burners will need replacement within the next 30 years.

The flue gas from the central heating boilers and domestic hot water boilers are collected into a common stack header, which is routed horizontally out of the mechanical room exterior wall with the vertical stack exposed to the outside. There are signs of flue gas condensation and corrosion on the stack exterior and the interior condition of the stack is suspect. The boiler stack will need to be replaced within the next 30 years.

A large refrigerant system is used to chill a water-glycol mixture, which is circulated through tubing embedded within the ice rink slab to freeze and maintain the layers of ice on the rink. A 2005 project replaced the original refrigeration equipment with updated equipment. The refrigeration equipment installed utilizes the refrigerant, Chlorodifluoromethane (R22) that is known as an ozone-depleting chemical. In 2004, EPA regulation started reduction of R22 production and a phase out process to replace manufacturing of refrigeration equipment with less ozone depleting refrigerant variants. Since 2010, manufacturing of equipment designed for R22 has stopped and by 2020 all production of R22 and other similar refrigerant will cease. After 2020, only reclaimed R22 can be used in repair of existing equipment. It is our understanding that there is “no drop” in replacement for R22 and, as time progresses, the cost for replacement R22 will continue to rise as supply diminishes. Within the next 30 years, the refrigeration equipment will need to be replaced with equipment designed to utilize non-ozone depleting refrigerants.

Plumbing System Like much of the building’s mechanical systems, the domestic water, sanitary waste, and vent systems are well maintained and appear to be in good condition. During investigation, we have found few code deficiencies within the plumbing system that require attention. Most issues are related to poor system configuration, aged systems, or installation errors that were identified by the users.

BETTISWORTH NORTH ARCHITECTS AND PLANNERS | JANUARY 2018 DIP-21

FAIRBANKS NORTH STAR BOROUGH (17-PWDPRJ-01) BUILDING CONDITION INVENTORY SURVEYBIG DIPPER ICE ARENA

Big Dipper Ice Arena (DIP) Deficiency TableFAIRBANKS NORTH STAR BOROUGH (17-PWDPRJ-01) | BUILDING CONDITION INVENTORY SURVEY | JANUARY 2018 | 100% SUBMITTAL

Information collected in this table is based on a non-destructive visual survey conducted on July 8 2017

ITEM ROOM LOCATION DESCRIPTION ITEM SPACE AND CONDITION NOTES RECOMMENDATION AND SCOPE OF WORK QUANTITY RECOMMENDED PRIORITY

COST ESTIMATE

MECHANICAL $3,507,978

MECHANICAL AGGREGATED (MG)ROOMS AFFECTED

MG-1 114, 114a, 115a, 119a, 120a, 125 Exhaust Grille/Ductwork Exhaust diffusers show signs of corrosion at the grille and lint buildup. It is assumed that the branch ductwork is in similar condition.

Replace branch ductwork and exhaust grilles serving the space. (SF)

3,960 N $39,600

MG-2 112, 116, 119, 123 Ventilation No ventilation is provided to this space. Provide ventilation to space to meet code requirements. (SF) 3,020 R $52,850MG-3 138, 139, 141, 141a, 203 Ventilation It does not appear that code required outside air is provided to

space.Provide code ventilation to area. (SF) 3,160 R $55,300

MG-4 115, 116, 120, 122 Lavatory Public lavatories are not protected by a ASEE 1070 tempering valve.

Install ASSE 1070 tempering valve in hot and cold water piping serving lavatory. (EA)

4 C $1,320

MECHANICAL (M)x Deficiency table items with an "x" in this column are consolidated in the Mechanical Aggregated (MG) section, and not priced individually in the cost estimate breakdown

M-1 General Ventilation Existing ventilation system is reaching the end of its usable lifespan and does not fully ventilate all of the occupiable spaces.

Replace the existing ventilation system and extend ventilation to previously unventilated spaces within 15 years. (SF)

52,000 R $1,294,800

M-2 General Heating Existing heating system is reaching the end of its usable lifespan.

Replace the existing heating system within 15 years. (SF) 52,000 R $946,400

M-3 General Plumbing Existing domestic cold and hot water, waste, and vent piping is reaching the end of its usable lifespan.

Replace entire domestic cold and hot water, waste, and vent piping within 15 years. (SF)

52,000 R $548,600

M-4 General Temperature Controls Temperature controls were replaced in 2002 and are 15 years old. Replacement will be required in the future.

Replace the temperature controls system for the building within 15 years. (SF)

52,000 R $356,200

M-5 103 TICKET OFFICE Domestic Water Backflow Preventer

No domestic water backflow preventer is installed at the water utility entrance.

Reconfigure domestic entrance water piping to provide a 4" RPZ double check domestic water backflow preventer. (EA)

1 N $6,500

M-6 109 JANITOR Ventilation No exhaust ventilation is provided to this space. Provide exhaust ventilation to space to meet code requirements. (SF)

95 N $1,008

M-7 x 110 STORAGE Ventilation No ventilation is provided to this space. Provide ventilation to space to meet code requirements. (SF) 540 RM-8 x 112 FUTURE TEAM ROOM Exhaust Grille/Ductwork Exhaust diffusers show signs of corrosion at the grille and lint

buildup. It is assumed that the branch ductwork is in similar condition.


760 N

M-9 x 114 TEAM ROOM Exhaust Grille/Ductwork Exhaust diffusers show signs of corrosion at the grille and lint buildup. It is assumed that the branch ductwork is in similar condition.


640 N

M-10 x 114a TOILET Lavatory Public lavatories are not protected by a ASEE 1070 tempering valve.


1 C

M-11 x 115 TEAM ROOM Exhaust Grille/Ductwork Exhaust diffusers show signs of corrosion at the grille and lint buildup. It is assumed that the branch ductwork is in similar condition.


640 N

M-12 x 115a TOILET Lavatory Public lavatories are not protected by a ASEE 1070 tempering valve.


1 C

M-13 x 116 CORRIDOR Ventilation No ventilation is provided to this space. Provide ventilation to space to meet code requirements. (SF) 1,500 RM-14 116 CORRIDOR Drinking Fountain Damaged Drain Repair drain strainer (no cost action) 1 RM-15 x 117 STORAGE Ventilation No ventilation is provided to this space. Provide ventilation to space to meet code requirements. (SF) 300 R

DIP-34BETTISW

ORTH NORTH ARCHITECTS AND PLANNERS | JANUARY 2018

FAIRBANKS NORTH STAR BOROUGH (17-PWDPRJ-01) BUILDING CONDITION INVENTORY SURVEY

BIG DIPPER ICE ARENA

fnsb project nomination form submission date: august 26

Documents