Standards for materials, finishes, LCA and product GWP

Grounded in the retrieved California Green Building Standards Code (CALGreen) — click a citation to read the verbatim passage:

• CALGreen § 8-3 High relevance — show source text

  CHAPTER 8 COMPLIANCE FORMS, WORKSHEETS AND

  REFERENCE MATERIAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

  Worksheet (WS-1) Baseline Water Use: Baseline Water Use Calculation Table . . . . . . . . . . .8-3

  Worksheet (WS-2) Water Use Reduction: 12-, 20- or 25-Percent Reduction Water Use Calculation Table . . . . . . . . . . . . . . . . . . .8-4

  Worksheet (WS-3) 5.105.2 Building Reuse . . . . . . . . . . . . . . . .8-4 Worksheet (WS-4) 5.409.2 Whole Building Life Cycle Assessment:. . . . . . . . . . . . . . . . . . . . . . . . .8-5 Worksheet (WS-5) 5.409.3 Product GWP Compliance—Prescriptive Path: . . . . . . . . . . . . . . . .8-5

  Worksheet (WS-6) A5.105.2 Building Reuse Tier 1 and Tier 2:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

  Worksheet (WS-7) A5.409.2 Whole Building Life Cycle Assessment: . . . . . . . . . . . . . . . . . . . . . . . . 8-6 Worksheet (WS-8) A5.409.3 Product GWP Compliance—Prescriptive Path:. . . . . . . . . . . . . . . . 8-6 Worksheet (WS-9) 5.409.2 and A5.409.2 Whole Building Life Cycle Assessment: . . . . . . . . . . . . . . . . 8-7 Construction Waste Management (CWM) Plan . . . . . . . . . . . 8-8 Construction Waste Management (CWM) Worksheet. . . . . . 8-9 Construction Waste Management (CWM) Acknowledgment. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10 Title 23, Waters, California Code of Regulations . . . . . . . . . 8-11 Commissioning Referenced Standards for Non-energy Systems. . . . . . . . . . . . . . . . . . . . . . . . . 8-13 IES TM-15-11 Table A-1, Table 130.2-A and Table 130.2-B Uplight and Glare Ratings Tables. . . . . . . . . . . . . . 8-40

• CALGreen § 105.2 High relevance — show source text

  Signature:	Col2
  Company:	Date:
  Address:	License:
  City/State/Zip:	Phone:

  WORKSHEET (WS-6) [BSC-CG] Section A5.105.2 BUILDING REUSE

  TIER 1 AND TIER 2

  DOCUMENTATION OF COMPLIANCE OF EXISTING BUILDING REUSE

  Area of Existing Building(s) _____ SF

  Col1	EXISTING TOTAL AREA (A)	RETAINED TOTAL AREA (B)	% OF RETAINED STRUCTURE (B)/(A)
  Primary Structural Elements of Existing Building(s) (foundations; columns, beams, walls, and floors; and lateral elements)	_____ SF	_____ SF	_____ %
  Building Enclosure of Existing Building(s) (roof framing, wall framing and exterior finishes only)	_____ SF	_____ SF	_____ %
  Interior Nonstructural Elements (interior walls, doors, floor coverings, ceiling systems applicable for voluntary Tier 2 compliance)	_____ SF	_____ SF	_____ %

  Total % Reuse of Required Elements _____ %

  2025 CALIFORNIA GREEN BUILDING STANDARDS CODE 8-5

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  COMPLIANCE FORMS, WORKSHEETS AND REFERENCE MATERIAL

  WORKSHEET (WS-7) [BSC-CG] Section A5.409.2 WHOLE BUILDING LIFE CYCLE ASSESSMENT

  Responsible Designer’s Declaration Statement:

  I attest that the Whole Building Life Cycle Analysis has been performed according to the requirements of Section A5.409.2 and has met the minimum 15 percent (Tier 1) or 20 percent (Tier 2) reduction in global warming potential as compared to a reference baseline building of similar size, function, complexity, type of construction, material specification, and location that meets the requirements of the California Energy Code currently in effect. Furthermore, I will ensure during construction that the material specifications will be reviewed for substantial conformance with the life cycle assessment indicated on the approved plans so at the close of construction the minimum reduction in global warming potential is thereby secured.

  Signature:	Col2
  Company:	Date:
  Address:	License:
  City/State/Zip:	Phone:

  WORKSHEET (WS-8) [BSC-CG] Section A5.409.3 PRODUCT GWP COMPLIANCE—PRESCRIPTIVE PATH

  Designer’s Declaration Statement:

  I attest that prescriptive compliance has been performed according to the requirements of Section A5.409.3 and products have met the maximum acceptable GWP value for the products listed in Table A5.409.3 for either Tier 1 or Tier 2. Furthermore, I will ensure during construction that any material specification substitution will be reviewed for substantial conformance with the requirements of Section A5.409.3 so at the close of construction the minimum 15 percent reduction in global warming potential is thereby secured.

  Signature:	Col2
  Company:	Date:
  Address:	License:
  City/State/Zip:	Phone:

  8-6 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

• CALGreen § 409.2 High relevance — show source text

  Responsible Designer’s Declaration Statement:

  I attest that the Whole Building Life Cycle Analysis has been performed according to the requirements of Section A5.409.2 and has met the minimum 15 percent (Tier 1) or 20 percent (Tier 2) reduction in global warming potential as compared to a reference baseline building of similar size, function, complexity, type of construction, material specification, and location that meets the requirements of the California Energy Code currently in effect. Furthermore, I will ensure during construction that the material specifications will be reviewed for substantial conformance with the life cycle assessment indicated on the approved plans so at the close of construction the minimum reduction in global warming potential is thereby secured.

  Signature:	Col2
  Company:	Date:
  Address:	License:
  City/State/Zip:	Phone:

  WORKSHEET (WS-8) [BSC-CG] Section A5.409.3 PRODUCT GWP COMPLIANCE—PRESCRIPTIVE PATH

  Designer’s Declaration Statement:

  I attest that prescriptive compliance has been performed according to the requirements of Section A5.409.3 and products have met the maximum acceptable GWP value for the products listed in Table A5.409.3 for either Tier 1 or Tier 2. Furthermore, I will ensure during construction that any material specification substitution will be reviewed for substantial conformance with the requirements of Section A5.409.3 so at the close of construction the minimum 15 percent reduction in global warming potential is thereby secured.

  Signature:	Col2
  Company:	Date:
  Address:	License:
  City/State/Zip:	Phone:

  8-6 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  COMPLIANCE FORMS, WORKSHEETS AND REFERENCE MATERIAL

  WORKSHEET (WS-9) Section 5.409.2 and Section A5.409.2 WHOLE BUILDING LIFE CYCLE ASSESSMENT

  User input	Units
  	m2

  Upfront Carbon	Col2	Col3	Use Phase	End of Life	Total
  A1-3	A4	A5	B1-5	C1-4

  Percent Reduction	Col2
  Mandatory
  Tier 1
  Tier 2

  Upfront Carbon	Col2	Col3	Use Phase	End of Life	Total
  A1-3	A4	A5	B1-5	C1-4

  2025 CALIFORNIA GREEN BUILDING STANDARDS CODE 8-7

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  COMPLIANCE FORMS, WORKSHEETS AND REFERENCE MATERIAL

  Construction Waste Management (CWM) Plan

  Note: This sample form may be used to assist in documenting compliance with the waste management plan.

  Project Name:___________________________________________________

  Job #:__________________________________________________________

• CALGreen § 5.409.2.3 High relevance — show source text

  The software tools and data sets shall be the same for evaluation of both the baseline building and the proposed building.

  Notes:

  1. Software for calculating whole building life cycle assessment is available for free at Athena Sustainable Materials Institute (https://calculatelca.com/software/impact-estimator/) and OneClick LCA-Planetary (www.oneclicklca.com/planetary). Paid versions include, but are not limited to, Sphera GaBi Solutions (gabi.sphera.com), SimaPro (simapro.com), OneClick LCA (www.oneclicklca.com) and Tally for Revit (apps.autodesk.com).
  2. ASTM E2921-22 “Standard Practice for Minimum Criteria for Comparing Whole Building Life Cycle Assessments for Use with Building Codes, Standards, and Rating Systems” may be consulted for the assessment.
  3. In addition to the required documentation specified in Section 5.409.2.3, Worksheet WS-9 may be required by the enforcing entity to demonstrate compliance with the requirements.

  5.409.2.1 Building components. Building enclosure components included in the assessment shall be limited to glazing assemblies, insulation, and exterior finishes. Primary and secondary structural members included in the assessment shall be limited to footings and foundations, and structural columns, beams, walls, roofs, and floors.

  5.409.2.2 Reference study period. The reference study period of the proposed building shall be equal to the reference baseline building and shall be 60 years.

  5.409.2.3 Verification of compliance. A summary of the GWP analysis produced by the software and Worksheet WS-4 signed by the design professional of record shall be provided in the construction documents as documentation of compliance. A copy of the whole building life cycle assessment which includes the GWP analysis produced by the software, in addition to maintenance and training information, shall be included in the operation and maintenance manual and shall be provided to the owner at the close of construction. The enforcing agency may require inspection and inspection reports in accordance with Sections 702.2 and 703.1 during and at completion of construction to demonstrate substantial conformance. Inspection shall be performed by the design professional of record or third party acceptable to the enforcing agency.

  5.409.3 Product GWP compliance—prescriptive path. Each product that is permanently installed and listed in Table 5.409.3 shall have a Type III environmental product declaration (EPD), either product-specific or factory-specific.

  5.409.3.1 Products shall not exceed the maximum GWP value specified in Table 5.409.3.

  Exception: Concrete may be considered one product category to meet compliance with this section. A weighted average of the maximum GWP for all concrete mixes installed in the project shall be less than the weighted average maximum GWP allowed per Table 5.409.3 using Exception Equation 5.409.3.1. Calculations shall be performed with consistent units of measurement for the material quantity and the GWP value. For the purposes of this exception, industry-wide EPDs are acceptable.

  Exception EQUATION 5.409.3.1

  GWP n < GWP allowed

  where

  GWP n = Σ (GWP n )(v n )

  and

  GWP allowed = Σ (GWP allowed )(v n )

  and

• CALGreen § 409.3 High relevance — show source text

  For concrete, Tier 1 is 150%, Tier 2 is 100% of the National Ready Mixed Concrete Association (NRMCA) 2022 version 3 Pacific Southwest regional benchmark values are used for
  the GWP allowed, except for High Early Strength.
  3. Concrete High Early Strength ready-mixed shall be calculated at 130% of the ready-mixed concrete GWP allowed values for each product category.|1. The GWP values of the products listed in Table A5.409.3 are based on 150% of Buy Clean California Act (BCCA) GWP values, except for concrete products which are not included
  in BCCA.
  2. For concrete, Tier 1 is 150%, Tier 2 is 100% of the National Ready Mixed Concrete Association (NRMCA) 2022 version 3 Pacific Southwest regional benchmark values are used for
  the GWP allowed, except for High Early Strength.
  3. Concrete High Early Strength ready-mixed shall be calculated at 130% of the ready-mixed concrete GWP allowed values for each product category.|1. The GWP values of the products listed in Table A5.409.3 are based on 150% of Buy Clean California Act (BCCA) GWP values, except for concrete products which are not included
  in BCCA.
  2. For concrete, Tier 1 is 150%, Tier 2 is 100% of the National Ready Mixed Concrete Association (NRMCA) 2022 version 3 Pacific Southwest regional benchmark values are used for
  the GWP allowed, except for High Early Strength.
  3. Concrete High Early Strength ready-mixed shall be calculated at 130% of the ready-mixed concrete GWP allowed values for each product category.|

  A5.409.3.2 Verification of compliance. Calculations to demonstrate compliance, Type III EPDs for products required to comply if included in the project, and Worksheet WS-8 signed by the design professional of record shall be provided on the construction documents. Updated EPDs for products used in construction shall be provided to the owner at the close of construction and to the enforcement entity upon request. The enforcing agency may require inspection and inspection reports in accordance with Sections 702.2 and 703.1 during and at completion of construction to demonstrate substantial conformance. Inspection shall be performed by the design professional of record or third party acceptable to the enforcing agency.

  A5.409.4 Whole building life cycle assessment of additional impacts. Maintaining compliance with the requirements of Section 5.409.2, conduct a cradle-to-grave whole building life cycle assessment performed in accordance with ISO 14044, including operating energy, and demonstrating a minimum 10-percent improvement for a minimum of two additional impacts listed in Section A5.409.4.1, as compared to a reference baseline building of similar size, function, complexity, type of construction, material specification, location and operating energy performance that meets the requirements of the California Energy Code currently in effect.

  A5.409.4.1 Impacts to be considered. Select from the following impacts in the assessment:

  1. Fossil fuel depletion.

  2. Stratospheric ozone depletion.

  3. Acidification of land and water sources.

  4. Eutrophication.

  5. Photochemical oxidants (smog).

  2025 CALIFORNIA GREEN BUILDING STANDARDS CODE APPENDIX A5-31

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  APPENDIX A5-32 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

• CALGreen § 19.2 High relevance — show source text

  The effective flush volume is defined as the composite, average flush volume of two
  reduced flushes and one full flush. Flush volumes will be tested in accordance with ASME A112.19.2 and ASME A112.19.14.
  3. The daily use number shall be increased to three if urinals are not installed in the room.
  4. Where complying faucets are unavailable, aerators rated at 35 gpm or other means may be used to achieve reduction.|

  WORKSHEET (WS-3) 5.105.2 BUILDING REUSE

  DOCUMENTATION OF COMPLIANCE OF EXISTING BUILDING REUSE

  Area of Existing Building(s) _____ SF

  Area of Aggregate Addition(s) (if applicable) _____ SF

  Col1	EXISTING TOTAL AREA (A)	RETAINED TOTAL AREA (B)	% OF RETAINED STRUCTURE (B)/(A)
  Primary Structural Elements of Existing Building(s) (foundations; columns, beams, walls, and floors; and lateral elements)	_____ SF	_____ SF	_____ SF
  Building Enclosure of Existing Building(s) (roof framing, wall framing and exterior finishes only)	_____ SF	_____ SF	_____ SF

  Total % Reuse of Required Elements ≥ 45% _____ %

  8-4 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  COMPLIANCE FORMS, WORKSHEETS AND REFERENCE MATERIAL

  WORKSHEET (WS-4) Section 5.409.2 WHOLE BUILDING LIFE CYCLE ASSESSMENT

  Responsible Designer’s Declaration Statement:

  I attest that the Whole Building Life Cycle Analysis has been performed according to the requirements of Section 5.409.2 and has met the minimum 10 percent reduction in global warming potential as compared to a reference baseline building of similar size, function, complexity, type of construction, material specification, and location that meets the requirements of the California Energy Code currently in effect. Furthermore, I will ensure during construction that the material specifications will be reviewed for substantial conformance with the life cycle assessment indicated on the approved plans so at the close of construction the minimum 10 percent

  eduction in global warming potential is thereby secured.	Col2
  Signature:
  Company:	Date:
  Address:	License:
  City/State/Zip:	Phone:

  WORKSHEET (WS-5) Section 5.409.3 PRODUCT GWP COMPLIANCE — PRESCRIPTIVE PATH

  Responsible Designer’s Declaration Statement:

  I attest that prescriptive compliance has been performed according to the requirements of Section 5.409.3 and products have met the minimum 10 percent reduction in global warming potential as specified in Table 5.409.3. Furthermore, I will ensure during construction that the material specifications will be reviewed for substantial conformance with the global warming potential limits indicated on the approved plans so at the close of construction the minimum 10 percent reduction in global warming potential is thereby secured.

  Signature:	Col2
  Company:	Date:
  Address:	License:
  City/State/Zip:	Phone:

  WORKSHEET (WS-6) [BSC-CG] Section A5.105.2 BUILDING REUSE

• CALGreen § 702.2 High relevance — show source text

  A copy of the whole building life cycle assessment which includes the GWP analysis produced by the software, in addition to maintenance and training information, shall be included in the operation and maintenance manual and shall be provided to the owner at the close of construction. The enforcing agency may require inspection and inspection reports in accordance with Sections 702.2 and 703.1 during and at completion of construction to demonstrate substantial conformance. Inspection shall be performed by the design professional of record or third party acceptable to the enforcing agency.

  5.409.3 Product GWP compliance—prescriptive path. Each product that is permanently installed and listed in Table 5.409.3 shall have a Type III environmental product declaration (EPD), either product-specific or factory-specific.

  5.409.3.1 Products shall not exceed the maximum GWP value specified in Table 5.409.3.

  Exception: Concrete may be considered one product category to meet compliance with this section. A weighted average of the maximum GWP for all concrete mixes installed in the project shall be less than the weighted average maximum GWP allowed per Table 5.409.3 using Exception Equation 5.409.3.1. Calculations shall be performed with consistent units of measurement for the material quantity and the GWP value. For the purposes of this exception, industry-wide EPDs are acceptable.

  Exception EQUATION 5.409.3.1

  GWP n < GWP allowed

  where

  GWP n = Σ (GWP n )(v n )

  and

  GWP allowed = Σ (GWP allowed )(v n )

  and

  n = each concrete mix installed in the project GWP n = the GWP for concrete mix n per concrete mix EPD, in kg CO 2 e/m [3]

  GWP allowed = the GWP potential allowed for concrete mix n per Table 5.409.3 v n = the volume of concrete mix n installed in the project, in m [3]

  2025 CALIFORNIA GREEN BUILDING STANDARDS CODE 5-25

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  NONRESIDENTIAL MANDATORY MEASURES

  TABLE 5.409.3—PRODUCT GWP LIMITS	Col2	Col3
  BUY CLEAN CALIFORNIA MATERIALS PRODUCT CATEGORY1	MAXIMUM ACCEPTABLE GWP VALUE (unfabricated) (GWPallowed)	UNIT OF MEASUREMENT
  Hot-rolled structural steel sections	1.77	MT CO2e/MT
  Hollow structural sections	3.00	MT CO2e/MT
  Steel plate	2.61	MT CO2e/MT
  Concrete reinforcing steel	1.56	MT CO2e/MT
  Flat glass	2.50	kg CO2e/MT
  Light-density mineral wool board insulation	5.83	kg CO2e/1 m2
  Heavy-density mineral wool board insulation	14.28	kg CO2e/1 m2
  Concrete, Ready-Mixed2, 3	Concrete, Ready-Mixed2, 3	**Concrete, Ready-Mixed2,

• CALGreen § 408.1.1 High relevance — show source text

  408.1.1, 5.408.1.2, 5.408.1.3 or more stringent
  local ordinance|5.408.1.1,
  5.408.1.2,
  5.408.1.3||||| |DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  (continued)|Mandatory|Construction waste management: documentation|5.408.1.4||||| |DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  (continued)|Mandatory|Universal waste [A]|5.408.2||||| |DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  (continued)|Mandatory|Excavated soil and land clearing debris (100% reuse or
  recycle) with Exception and Notes|5.408.3||||| |DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  (continued)|Mandatory|Life Cycle Assessment, Scope, Whole building life cycle
  assessment with Notes, Building components, Reference
  study period, and Verification of compliance|5.409.1,
  5.409.2,
  5.409.2.1,
  5.409.2.2 and
  5.409.2.3||||| |DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  (continued)|Mandatory|Life Cycle Assessment, Scope, Product GWP compliance –
  prescriptive path, 5.409.3.1 with Exception and Exception
  EQUATION, Verification of compliance and Product GWP
  Limits Table with Footnotes|5.409.1,
  5.409.3,
  5.409.3.1,
  5.409.3.2 and
  Table 5.409.3||||| |DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  (continued)|Mandatory|Recycling by occupants (with exception)|5.410.1||||| |DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  (continued)|Mandatory|Recycling by occupants: additions (with exception)|5.410.1.1||||| |DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  (continued)|Mandatory|Recycling by occupants: sample ordinance
  |5.410.1.2||||| |DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  (continued)|Mandatory|Commissioning new buildings (≥ 10,000 sf) [N]|5.410.2||||| |**DIVISION 5.

• CALGreen § 409.2.3 Medium relevance — show source text

  Software used to conduct the whole building life cycle assessment, including reference baseline building, shall have a data set compliant with ISO 14044, and ISO 21930 or EN 15804, and the software shall conform to ISO 21931 and/or EN 15978. The software tools and data sets shall be the same for evaluation of both the baseline building and the proposed building.

  Exception: For projects that include building reuse, the reference baseline building shall not be of new construction and shall retain existing materials. The percent reduction in GWP shall be achieved through the design and construction of new project elements.

  A5.409.2.3 Verification of compliance. A summary of the GWP analysis produced by the software and Worksheet WS-7 signed by the design professional of record shall be provided in the construction documents as documentation of compliance. A copy of the whole building life cycle assessment which includes the GWP analysis produced by the software, in addition to maintenance and training information, shall be included in the operation and maintenance manual and shall be provided to the owner at the close of construction. The enforcing agency may require inspection and inspection reports in accordance with Sections 702.2 and 703.1 during and at completion of construction to demonstrate substantial conformance. Inspection shall be performed by the design professional of record or third party acceptable to the enforcing agency.

  A5.409.3 Product GWP compliance—prescriptive path. Each product that is permanently installed and listed in Table A5.409.3 shall have a Type III environmental product declaration (EPD), either product-specific or factory-specific.

  Exception: Concrete may be considered one product category to meet compliance with this section. A weighted average of the maximum GWP for all concrete mixes installed in the project shall be less than the weighted average maximum GWP allowed per Table A5.409.3 using Exception Equation A5.409.3.1. Calculations shall be performed with consistent units of measurement for the material quantity and the GWP value. For the purposes of this exception, industry-wide EPDs are acceptable.

  Exception EQUATION A5.409.3.1

  GWP n < GWP allowed

  where

  GWP n = Σ (GWP n )(v n ) and GWP allowed = Σ (GWP allowed )(v n )

  and

  n = each concrete mix installed in the project GWP n = the GWP for concrete mix n per concrete mix EPD, in kg CO 2 e/m [3]

  GWP allowed = the GWP potential allowed for concrete mix n per Table 5.409.3 v n = the volume of concrete mix n installed in the project, in m [3]

  APPENDIX A5-30 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  APPENDIX A5 — NONRESIDENTIAL VOLUNTARY MEASURES

  |TABLE A5.409.3—PRODUCT GWP LIMITS,

• CALGreen § 5.4 Medium relevance — show source text

  4**
  Material
  Conservation
  and Resource
  Efficiency
  Select Three Electives
  (cont’d)|(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  Select Three Electives
  (cont’d)|Mandatory|Life Cycle Assessment, Scope, Whole building life cycle
  assessment with Notes, Building components,
  Reference study period, and Verification of compliance|5.409.1, 5.409.2,
  5.409.2.1, 5.409.2.2
  and 5.409.2.3||||| |(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  Select Three Electives
  (cont’d)|(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  Select Three Electives
  (cont’d)|Mandatory|Life Cycle Assessment, Scope, Product GWP
  compliance – prescriptive path, 5.409.3.1 with
  Exception and Exception EQUATION, Verification of
  compliance and Product GWP Limits Table with
  Footnotes|5.409.1,5.409.3,
  5.409.3.1, 5.409.3.2
  and Table 5.409.3||||| |(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  Select Three Electives
  (cont’d)|(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  Select Three Electives
  (cont’d)|Tier 2
  Prerequisite|Enhanced construction waste reduction (80%—Tier 2
  with verification)|A5.408.3.1.1,
  A5.408.3.1.2||||| |(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  Select Three Electives
  (cont’d)|(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  Select Three Electives
  (cont’d)|Mandatory|Recycling by occupants (with exception)|5.410.1||||| |(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  Select Three Electives
  (cont’d)|(continued)
  **DIVISION 5.

• CALGreen § 5.105.2 Medium relevance — show source text

  Exception: Combined addition(s) to existing building(s) of two times the area or more of the existing building(s) is not eligible to meet compliance with Section 5.105.2 or Section A5.105.2.

  A5.409.2 Whole building life cycle assessment. Projects shall meet the minimum requirements of Section A5.409.2 for Tier 1 or Tier 2 compliance.

  A5.409.2.1 Tier 1. Projects shall conduct a cradle-to-grave whole building life cycle assessment meeting the requirements of Section 5.409.2 and performed in accordance with ISO 14040 and 14044, excluding operating energy, demonstrating a minimum 15-percent reduction in global warming potential (GWP) as compared to a reference baseline building of similar size, function, complexity, type of construction, material specification, and location that meets the requirements of all parts of the California Building Standards Code currently in effect. Software used to conduct the whole building life cycle assessment, including reference baseline building, shall have a data set compliant with ISO 14044, and ISO 21930 or EN 15804, and the software shall conform to ISO 21931 and/or EN 15978. The software tools and data sets shall be the same for evaluation of both the baseline building and the proposed building.

  Exception: For projects that include building reuse, the reference baseline building shall exclude the reused elements. The percent reduction in GWP shall be achieved through the design and construction of new project elements.

  A5.409.2.2 Tier 2. Projects shall conduct a cradle-to-grave whole building life cycle assessment meeting the requirements of Section 5.409.2 and performed in accordance with ISO 14040 and ISO 14044, excluding operating energy, demonstrating a minimum 20-percent reduction in GWP as compared to a reference baseline building of similar size, function, complexity, type of construction, material specification, and location that meets the requirements of all parts of the California Building Standards Code currently in effect. Software used to conduct the whole building life cycle assessment, including reference baseline building, shall have a data set compliant with ISO 14044, and ISO 21930 or EN 15804, and the software shall conform to ISO 21931 and/or EN 15978. The software tools and data sets shall be the same for evaluation of both the baseline building and the proposed building.

  Exception: For projects that include building reuse, the reference baseline building shall not be of new construction and shall retain existing materials. The percent reduction in GWP shall be achieved through the design and construction of new project elements.

  A5.409.2.3 Verification of compliance. A summary of the GWP analysis produced by the software and Worksheet WS-7 signed by the design professional of record shall be provided in the construction documents as documentation of compliance. A copy of the whole building life cycle assessment which includes the GWP analysis produced by the software, in addition to maintenance and training information, shall be included in the operation and maintenance manual and shall be provided to the owner at the close of construction. The enforcing agency may require inspection and inspection reports in accordance with Sections 702.2 and 703.1 during and at completion of construction to demonstrate substantial conformance. Inspection shall be performed by the design professional of record or third party acceptable to the enforcing agency.

  A5.409.3 Product GWP compliance—prescriptive path. Each product that is permanently installed and listed in Table A5.409.3 shall have a Type III environmental product declaration (EPD), either product-specific or factory-specific.