Santa Barbara City College CC Building

P.O. Box 1962, Paso Robles, CA 93447 805.712.6359, [email protected]

Santa Barbara City College CC Building

Supply Airflow Testing Report REV 1

Presented to:

SBCC 721 Cliff Drive

Santa Barbara, CA 93109

Testing Date: Feb./ March 2021

Presented by:

Palt & Associates, Inc. Sarah Palt

This is to certify that Palt and Associates, Inc., a California Corporation, has inspected and tested the systems described herein as to the state of performance, conditions, and capabilities. The testing has been performed in accordance with ISO Norm 14644-1:2015 and the standard requirements and procedures of the Associated Air Balance Council. Palt and Associates is a California State Licensed air and water balance contractor and a carries a D-62 license. We certify the results of this testing to be true and accurate.

Certification Number: P21-012.5-1

Final report 05/06/2021

REV 1: 06/14/2021

Sarah Palt, CEO

SBCC – CC Building – Airflow Testing 2021 REV 1 page 2

California Corporation CA C.L. C61/D62 #976983

Contents

1. Overview .............................................................................................................................................. 3

1.1. Definitions ....................................................................................................................................... 3

2. HVAC System ....................................................................................................................................... 3

2.1. Room Data ....................................................................................................................................... 3

3. Supply Airflow Testing ......................................................................................................................... 4

4. Data Analysis ....................................................................................................................................... 4

5. Test Data Summary ............................................................................................................................. 5

5.1. Recommendations: ......................................................................................................................... 6

6. Conclusion and Discussion: ................................................................................................................. 6

7. APPENDIX ............................................................................................................................................ 7

7.1. Detailed building summary ............................................................................................................. 7

7.1.1. CC Building First Floor ................................................................................................................. 7

7.1.2. CC – Second Floor ....................................................................................................................... 7

7.2. Equipment Calibration Certificates ................................................................................................. 8

7.3. Building Floor Layout ..................................................................................................................... 10

7.4. Detailed room data sheets ............................................................................................................ 12



1. Overview

The following is the report for the airflow test study conducted at the Santa Barbara City College beginning of 2021. The scope of work was to test supply airflows for all indicated classrooms, lecture halls and offices to determine Air Change Rates for each room / area. Outside airflows were calculated for each room using building DDC information.

The following report lists the result for the CC Building (CC = Campus Center) on the Main Campus.

1.1. Definitions

SA = Supply Airflow OSA = Outside Airflow = fresh air Air Change Rate: How many times the air in a defined space is changed out per hour; ACR is calculated as follows: ACR = Total SA (CFM) * 60 / Room Volume (CFT) ASHRAE Standard 62.1-2019: Standard listing supply and OSA amounts to calculated new design buildings. The Standard also includes a table (Table L-1) providing check values for ventilation rates for existing buildings. This table and calculated outside airflows are check values ONLY and based on assumed and standardized default settings. In no way can these values determine a PASS/FAIL criteria for any rooms. It is only to provide check values, assuming default values for occupancy and a multi-zone HVAC system to simplify calculations.

2. HVACSystem

Each tested HVAC system was set to maximum airflow capacity at the time of testing. The numbers listed in this report give the maximum possible supply airflow for each area with the current HVAC system (exceptions are noted in the attached data sheets).

The HVAC system for the first floor is set to 20% OSA.

The second floor is set to 30% OSA (settings changed from 20% from original report per SBCC).

Note: Fan Coil FC-1 needs mechanical repair; Rooms 116 to 121 on the first floor were not tested at this time. Readings will be taken when FC-1 is repaired and added to this report.

Unit providing airflow to rooms 226 & 228 was repaired and rooms were tested on 05/26/2021.

2.1. RoomData

Room areas (in square feet) were given to Palt and Associates by SBCC and were NOT measured or verified on site. Room height of each individual room was measured by Palt and Associates on site.



All data taken are listed in the attached data sheets, organized by building and floor. Each data sheet lists room area, room height, calculated room volume, testes Supply Airflow and Supply Air Change Rates.

Outside Air amounts (OSA) were NOT tested. OSA was calculated by using the DDC systems information (provided by SBCC) for each individual system and are noted in the data sheets. These numbers are used to calculate the Outside Air Change Rate, which differs from the Supply Air Change Rate (less), unless the system provides 100% outside air.

The subject of this report is to report tested airflows only. Assumptions based on these data regarding health and safety of occupants are in no way the responsibility of Palt and Associates Inc. This airflow study can only report test data at one point in time (at the time of testing) and help evaluate the condition and performance of the mechanical HVAC system tested.

Note: HVAC design calculations in California are based on minimum energy consumption. Conditioning of outside air requires energy and is set to the minimum amount.

3. SupplyAirflowTesting

Airflow measurements were obtained using a Shortridge Instruments ADM860 Air Data Multimeter with a Flowhood adapter (tent) wherever possible. If the use of the Flowhood was not feasible due to ceiling height (lecture halls, theatres, gym) the main supply air duct for the specific area was traversed using a Shortridge Multimeter with Airfoil adapter. Small holes were drilled into the ductwork and velocity readings were taken across the entire opening of the duct. The average velocity was multiplied by the open area of the duct to calculate the supply airflow.

4. DataAnalysis

Required air change rates (ACR) and outside airflow depends on multiple factors: Size and volume of room, usage of room, and occupancy. A minimum Outside Air Amount of ACR = 4-6 for classrooms can be used as a guideline ONLY. Correct requirements per ASHRAE Standard have to be calculated for each room specifically.

To verify and check ventilation rates, ASHRAE Standard 62.1-2019 includes a table listing “Combined Outdoor Air Rate” in CFM/SQFT for different Occupancy Categories. This list is NOT intended for design purpose and is used to provide check values ONLY, with assumed default values to simplify calculations.

Using this table, outdoor airflow rates were calculated for each room and compared to the current, tested outdoor airflow rates.



5. TestDataSummary

The following table shows a summary of the main tested data compiled during the airflow study. More detailed information for each area tested are arranged at the end of this report.

CC Building First Floor:

OSA setting fixed at 20% for all Fan Coil Units. Calculated outside airflow is 20% of supply airflow for all tested rooms.

CC Building Second Floor:

Note 06/10/2021: OSA amount was changed from 20% to 30% per SBCC for all rooms from original Report (calculated outside airflow = 30% of total tested supply airflow).

Total SA Airflow

Calculated OSA Airflow

Min. required OSA Airflow

Within ASHRAE Requirements

CFM CFM CFM Yes / No123 Read / Study Room 573 114.6 314 NO See section 5.1, 1 thru 4

123-1 Office 349 69.8 13 YES See section 5.1, 1 thru 3


125 Read / Study Room 560 112 210 NO See section 5.1, 1 thru 4



127 Classroom Service 0 0.0 14 NO See section 5.1, 1 thru 4

TestedASHRAE STANDARD 62.1-2019

Table L-1 Ventilation Check Table

Room # Category Recommendation

Total SA Airflow

Calculated OSA Airflow

Min. required OSA Airflow

Within ASHRAE Requirements

CFM CFM CFM Yes / No208 Cafeteria 2,886 865.8 1,897 NO See section 5.1, 1 thru 4

209 CC Lobby 2,035 610.5 581 YES See section 5.1, 1 thru 3

216 Meeting Room 367 110.1 28 YES See section 5.1, 1 thru 3

217 Office 186 55.8 15 YES See section 5.1, 1 thru 3





222-B Office 29 8.7 13 NO See section 5.1, 1 thru 4

223 Meeting Room 914 274.2 51 YES See section 5.1, 1 thru 3

224 Office 51 15.3 19 NO See section 5.1, 1 thru 4

225 Read / Study 379 113.7 187 NO See section 5.1, 1 thru 4

226 Class Room 819 245.7 369 NO See section 5.1, 1 thru 5

228 Read / Study 2,671 801.3 802 YES See section 5.1, 1 thru 3

228 A Office 110 33.0 18 YES See section 5.1, 1 thru 3

Tested ASHRAE STANDARD 62.1-2019 Table L-1 Ventilation Check Table

Room # Category Recommendation



5.1. Recommendations:

The following list are recommendations applicable for all areas - especially for the areas with outside airflows below minimum ASHRAE recommendations:

1. Increase mechanical outside airflow from current minimum setting to maximum setting wherever possible; re-calculate calculated outside airflows for new OSA settings and reevaluate outside airflows.

2. Open windows to increase outside air amount and fresh air circulation throughout the room; this method cannot be “tested”, as airflow testing can only be performed for mechanical systems (airflow amount through an open window will change depending on outside air conditions, wind, temperature etc.); however, it will increase the outside airflow in the classroom. Strategically placed fans in front of windows will help outside air circulation throughout the room. If necessary, smoke studies can be performed to help visualize airflow pattern and currents throughout the classroom.

3. Minimize class density; above listed recommended outside airflows per ASHRAE Table L-1 assume standard occupancy

4. Place portable HEPA filter air purifiers in classrooms of concern. These units recirculate room air at a specified rate (can be tested) through a system of pre- and HEPA filters and help provide clean filtrated air to the area.

6. ConclusionandDiscussion:

All tested airflows listed in this report can only be used to evaluate the condition of the HVAC system. The original design parameters for the rooms and buildings are currently unknown. All comparison values are recommendations only, using comparison tables and current mechanical standards as references. These standards are meant to evaluate the HVAC systems only and cannot in any way be used in regard to health and safety recommendations. Recommendations listed in this report are based on current CDC, NEBB and similar organizations knowledge, recommendations, and suggestions.

Common best practice recommendations for all areas:

Ø Run HVAC system continuously; at a minimum perform building flush-outs by running mechanical airflows two hour prior and two hours past building occupancy

Ø Continue to use MERV 13 Filters in all HVAC Systems with monthly check up on filter loading / change out

Ø Continue to clean and sanitize all areas in use Ø Continue to request face covering to be always worn on campus Ø Continue to minimize close contact and maintain a safe distance Ø Increase total Supply Airflow if Supply Airflow Rate is low Ø Increase OSA airflow to maximum possible amount Ø Open windows in all areas possible and whenever spaces are occupied



Ø Place portable HEPA filter units in areas of concern

Further options of upgrading the mechanical systems are currently available, for example installation of UV lights inside HVAC units or Ionization units in supply air ducts. However, these methods are costly and are not short term / fast options as they require major changes to the mechanical systems. Their effectiveness must be evaluated regarding their costs (installation and maintenance) and installation duration.

7. APPENDIX

7.1. Detailedbuildingsummary

7.1.1. CCBuildingFirstFloor

7.1.2. CC–SecondFloor

Room Volume

Total SA Airflow

Total SA Air Change

Rate

Calculated OSA

Calculated OSA Air Change

Rate

Room AreaCombined

Outdoor Air Rate

Required Difference

CFT CFM AC/hr CFM AC/hr SQFT CFM/SQFT CFM %123 Read / Study Room 4,432 573 7.8 114.6 1.6 498 Classroom 0.63 314 -63%123-1 Office 1,068 349 19.6 69.8 3.9 120 Office 0.11 13 429%123-2 Office 594 87 8.8 17.4 1.8 60 Office 0.11 7 164%125 Read / Study Room 2,973 560 11.3 112 2.3 334 Classroom 0.63 210 -47%125-1 Office 712 226 19.0 45.2 3.8 80 Office 0.11 9 414%125-2 Office 623 98 9.4 19.6 1.9 70 Office 0.11 8 155%127 Classroom Service 1,148 0 0.0 0.0 0.0 129 Office 0.11 14 -100%

ASHREA STANDARD 62.1-2019 Table L-1 Ventilation Check Table

Room # Category Occupancy Category

Room Volume

Total SA Airflow

Total SA Air Change

Rate

Calculated OSA

Calculated OSA Air Change

Rate

Room AreaCombined

Outdoor Air Rate

Required Difference

CFT CFM AC/hr CFM AC/hr SQFT CFM/SQFT CFM %208 Cafeteria 18,360 2,886 9.4 865.8 2.8 1,530 Cafeteria 1.24 1,897 -54%209 CC Lobby 27,693 2,035 4.4 610.5 1.3 1,530 Lobbies / prefunctions 0.38 581 5%216 Meeting Room 2,000 367 11.0 110.1 3.3 250 Office 0.11 28 300%217 Office 1,215 186 9.2 55.8 2.8 135 Office 0.11 15 276%218 Office 810 43 3.2 12.9 1.0 90 Office 0.11 10 30%219 Office 450 75 10.0 22.5 3.0 50 Office 0.11 6 309%220 Office 900 59 3.9 17.7 1.2 100 Office 0.11 11 61%221 Office 909 105 6.9 31.5 2.1 101 Office 0.11 11 184%222-B Office 1,053 29 1.7 8.7 0.5 117 Office 0.11 13 -32%223 Meeting Room 4,417 914 12.4 274.2 3.7 465 Office 0.11 51 436%224 Office 1,622 51 1.9 15.3 0.6 169 Office 0.11 19 -18%225 Read / Study 2,851 379 8.0 113.7 2.4 297 Classroom 0.63 187 -39%226 Class Room 5,567 819 8.8 245.7 2.6 586 Classroom 0.63 369 -33%228 Read / Study 12,221 2,671 13.1 801.3 3.9 1,273 Classroom 0.63 802 0%228 B Office 162 110 40.7 33.0 12.2 162 Office 0.11 18 85%

Room # Category Occupancy Category



7.2. EquipmentCalibrationCertificates

001102024Calibration Certificate

A l l o m e t r i c swhen measurements matter

1425 B Atlantis Dr, Webster, Tx 77598(800) 528-2246 Fax (281) 474-5482www.allometrics.com

Next Cal Date: 08/17/2021Cal Date: 8/17/2020

Work Order: 00121424

Manufacturer: SHORTRIDGE INSTRUMENTS

Model Number: ADM-860

Serial Number:

Asset ID:

Performed At:

Test Result:

Performed By:

Customer: PASS

PASO ROBLES, CA, 93446-8408

PALT AND ASSOC INC

TFIREBAUGH

6110 WILD HORSE PLM95752RFS

M95752RFS

ALLOMETRICS LABORATORYLocation:

Date of Issue: 08/17/2020

Calibrations by Allometrics are performed in accordance with the principles of ISO 9001:2015. Allometrics maintains a Quality Management System accredited to ISO/IEC 17025:2017. The use of the Accrediting Body's logo is exclusive to calibrations where the contractual obligations meet the minimum requirements as specified by ISO/IEC 17025:2005 and the Accrediting Body. For additional information regarding Allometrics' accredited status visit the A2LA website and view scope 2039.01.

The standards listed under the Test Equipment section and used in this calibration are traceable through NIST (National Insitute for Standards and Technology) to the SI (International System of Units).

ACCEPTANCE OF THIS CERTIFICATION OR CALIBRATION DOCUMENT OR THE CONTINUED USE OF THE EQUIPMENT LISTED ON THIS DOCUMENT INDICATES AGREEMENT WITH ALLOMETRICS INC. TERMS AND CONDITIONS AS FOUND AT https://www.allometrics.com/terms-and-conditions/ AND AGREEMENT THAT THOSE CONDITIONS GOVERN ANY TRANSACTION RELATED TO THE CERTIFICATION, CALIBRATION, REPAIR OR USE OF ANY EQUIPMENT LISTED ON OR ASSOCIATED WITH THIS DOCUMENT.

TEST ENVIRONMENTTemperature: 20.58 Humidity: 45.8 %C

As Found As LeftUUT CONFORMITY TEST DATA

# Description Test Point Minimum Maximum P/FP/FUnit30.0230.01 30.021 29.31 30.71 P PinHgAbsolute Pressure

0.05080.0500 0.05082 0.0480 0.0520 P Pin.wcDifferential Pressure0.12280.1250 0.12283 0.1215 0.1285 P Pin.wc0.22740.2250 0.22744 0.2195 0.2305 P Pin.wc

0.9921.000 0.9925 0.979 1.021 P Pin.wc2.0012.000 2.0016 1.959 2.041 P Pin.wc3.5713.600 3.5717 3.527 3.673 P Pin.wc26.7327.00 26.738 26.46 27.54 P Pin.wc

101100 1019 90 110 P PfpmLow Velocity Confirmation498500 49810 478 522 P Pfpm w/ pitot tube

Cal. Due DateAsset IDDescriptionTEST EQUIPMENT

1516 2/8/2021ADDITEL/ADT760-LLP-DL/PRESSURE CALIBRATOR1516A 2/8/2021ADDITEL/ADT155-DP30-760/Pressure Module1904 11/26/2021OMEGA/WT4401-D/WIND TUNNEL SYSTEM

PROCEDUREProcedure Name Revision Descripton Date

QWI 19-45 C. 11/4/2019CALIBRATION PROCEDURE FOR PRESSURE DEVICES

COMMENTS--------- end report ---------

Page 1 of 1

This report applies only to the item calibrated. This report may not be reproduced, except in full, without the written consent from Allometrics, Inc. © 2020

04.ISO9001.01



001102026Calibration Certificate

A l l o m e t r i c swhen measurements matter

1425 B Atlantis Dr, Webster, Tx 77598(800) 528-2246 Fax (281) 474-5482www.allometrics.com

Next Cal Date: 08/17/2021Cal Date: 8/17/2020

Work Order: 00121424

Manufacturer: SHORTRIDGE INSTRUMENTS

Model Number: ADM-860

Serial Number:

Asset ID:

Performed At:

Test Result:

Performed By:

Customer: PASS

PASO ROBLES, CA, 93446-8408

PALT AND ASSOC INC

TFIREBAUGH

6110 WILD HORSE PLM891011RFS

M891011RFS

ALLOMETRICS LABORATORYLocation:

Date of Issue: 08/17/2020

Calibrations by Allometrics are performed in accordance with the principles of ISO 9001:2015. Allometrics maintains a Quality Management System accredited to ISO/IEC 17025:2017. The use of the Accrediting Body's logo is exclusive to calibrations where the contractual obligations meet the minimum requirements as specified by ISO/IEC 17025:2005 and the Accrediting Body. For additional information regarding Allometrics' accredited status visit the A2LA website and view scope 2039.01.

The standards listed under the Test Equipment section and used in this calibration are traceable through NIST (National Insitute for Standards and Technology) to the SI (International System of Units).

ACCEPTANCE OF THIS CERTIFICATION OR CALIBRATION DOCUMENT OR THE CONTINUED USE OF THE EQUIPMENT LISTED ON THIS DOCUMENT INDICATES AGREEMENT WITH ALLOMETRICS INC. TERMS AND CONDITIONS AS FOUND AT https://www.allometrics.com/terms-and-conditions/ AND AGREEMENT THAT THOSE CONDITIONS GOVERN ANY TRANSACTION RELATED TO THE CERTIFICATION, CALIBRATION, REPAIR OR USE OF ANY EQUIPMENT LISTED ON OR ASSOCIATED WITH THIS DOCUMENT.

TEST ENVIRONMENTTemperature: 20.58 Humidity: 45.8 %C

As Found As LeftUUT CONFORMITY TEST DATA

# Description Test Point Minimum Maximum P/FP/FUnit30.3030.02 30.301 29.32 30.72 P PinHgAbsolute Pressure

0.04870.0500 0.04872 0.0480 0.0520 P Pin.wcDifferential Pressure0.12730.1250 0.12733 0.1215 0.1285 P Pin.wc0.22340.2250 0.22344 0.2195 0.2305 P Pin.wc

1.0101.000 1.0105 0.979 1.021 P Pin.wc2.0072.000 2.0076 1.959 2.041 P Pin.wc3.6033.600 3.6037 3.527 3.673 P Pin.wc26.8427.00 26.848 26.46 27.54 P Pin.wc

101100 1019 90 110 P PfpmLow Velocity Confirmation497500 49710 478 522 P Pfpm w/ pitot tube

Cal. Due DateAsset IDDescriptionTEST EQUIPMENT

1516 2/8/2021ADDITEL/ADT760-LLP-DL/PRESSURE CALIBRATOR1516A 2/8/2021ADDITEL/ADT155-DP30-760/Pressure Module1904 11/26/2021OMEGA/WT4401-D/WIND TUNNEL SYSTEM

PROCEDUREProcedure Name Revision Descripton Date

QWI 19-45 C. 11/4/2019CALIBRATION PROCEDURE FOR PRESSURE DEVICES

COMMENTS--------- end report ---------

Page 1 of 1

This report applies only to the item calibrated. This report may not be reproduced, except in full, without the written consent from Allometrics, Inc. © 2020

04.ISO9001.01



7.3. BuildingFloorLayout



7.4. Detailedroomdatasheets

P21-012.5-1 SBCC Airflow Study CC Building

Palt Associates Inc. page 1 of 4

CC-01123 / 124 Read / Study Room

498 SQFT8.9 FT

4,432.2 CFT

Tested Supply Airflow = 573.0 CFMTested SA Air Change Rate = 7.8 AC/hr

OSA % (DDC): 0.2 20%OSA calculated = 114.6 CFM

Calc. OSA Air Change Rate = 1.6 AC/hr

Testing Method: Flow Hood

Register CFMSA#1 274SA#2 299Total 573

CC-01123-1 Office

120 SQFT8.9 FT

1,068.0 CFT






Building:Room:

Room Area:Room Height:Room Volume:

Building:Room:




CC-01123-2 Office

60 SQFT9.9 FT

594.0 CFT





Register CFMSA#1 87Total 87

CC-01125 Read / Study

334 SQFT8.9 FT

2,972.6 CFT





Register CFMSA#1 185SA#2 189SA#3 186Total 560

Building:Room:


Building:Room:




CC-01125-1 Office

80 SQFT8.9 FT

712.0 CFT






CC-01125-2 Office

70 SQFT8.9 FT

623.0 CFT






Building:Room:


Building:Room:




CC-01127 Classroom Service

129 SQFT8.9 FT

1,148.1 CFT






Note: Fan Coil not working (status 04/01/2021)Rooms 116 to 121 not tested

Building:Room:




CC-02208 Cafeteria

1,530 SQFT12.0 FT

18,360.0 CFT

Tested Supply Airflow = 2,886.0 CFMTested SA Air Change Rate = 9.4 AC/hr




Register CFMSA#1 458SA#2 539SA#3 424SA#4 564SA#5 623SA#6 278Total 2,886

CC-02209 CC Lobby

1,530 SQFT18.1 FT

27,693.0 CFT

Tested Supply Airflow = 2,035.0 CFMTested SA Air Change Rate = 4.4 AC/hr




Register CFM Register CFMSA#1 99 SA#7 83SA#2 120 SA#8 120SA#3 226 SA#9 338SA#4 240 SA#10 119SA#5 155 SA#11 126SA#6 409Total 1,249 Total 786

Building:Room:


Building:Room:




CC-02216 Meeting Room

250 SQFT8.0 FT

2,000.0 CFT






CC-02217 Office

135 SQFT9.0 FT

1,215.0 CFT






Building:Room:


Building:Room:




CC-02218 Office

90 SQFT9.0 FT

810.0 CFT






CC-02219 Office

50 SQFT9.0 FT

450.0 CFT






Building:Room:


Building:Room:




CC-02220 Office

100 SQFT9.0 FT

900.0 CFT






CC-02221 Office

101 SQFT9.0 FT

909.0 CFT






Room Volume:

Building:Room:

Room Area:Room Height:

Building:Room:




CC-02222-B Office

117 SQFT9.0 FT

1,053.0 CFT






CC-02223 Meeting Room

465 SQFT9.5 FT

4,417.5 CFT





Register CFMSA#1 208SA#2 217SA#3 238SA#4 251Total 914

Room Height:Room Volume:


Building:Room:

Room Area:

Building:Room:

Room Area:



CC-02224 Office

169 SQFT9.6 FT

1,622.4 CFT






CC-02225 Read / Study

297 SQFT9.6 FT

2,851.2 CFT








Building:Room:

Room Area:

Building:Room:

Room Area:

Santa Barbara City College CC Building

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