HomeMy WebLinkAboutCC Ord 10-1316 (Ca. Green Bl. Code)Exhibit A for Ordinance No. 10-1316 1
EXHIBIT A:
ADDITION TO TITLE 15 OF THE HERMOSA BEACH MUNICIPAL CODE
Chapter 15.48, derived from the California Green Building Standards Code
(“CALGreen”, Part 11 of Title 24 of the California Code of Regulations), is
hereby added to Title 15 as shown hereinafter.
TITLE 15
CHAPTER 15.48
GREEN BUILDING STANDARDS
15.48.010. Adoption of CALGreen Code.
Except as hereinafter provided in this Chapter 15.48 and as provided elsewhere in Title
15, the California Green Building Standards Code, referred to herein as “CALGreen” 2010
Edition (Part 11 of Title 24 of the California Code of Regulations), is hereby adopted by
reference and made a part of this Chapter as though set forth in this Chapter in full. A copy of
this Chapter shall be maintained in the office of the City Clerk and shall be made available for
public inspection while the Chapter is in force.
15.48.020. Modifications to CALGreen Code.
Notwithstanding the provisions of Section 15.48.010, the provisions of CALGreen are
hereby modified to read as shown herein below.
RESIDENTIAL CONSTRUCTION
SECTION A4.106
SITE DEVELOPMENT
A4.106.4 Water permeable surfaces.
1. Utilize water permeable surfaces (e.g., permeable paving or landscaping) on not less than
50% of the exterior surface areas (excluding building footprints) that are disturbed by the
project. Subsurface infiltration alternatively may be used, designed to infiltrate the volume of
runoff produced by a 0.75 inch storm event. A maintenance agreement for infiltration or an
annual fee for postconstruction treatment control measures in lieu of infiltration may be required
in an amount established by resolution of the City Council.
2. Direct runoff from the remainder of all impermeable surfaces on the project site, including
roof runoff and downspouts from roofs, onto permeable areas or into a subsurface infiltration
system designed to infiltrate the volume of runoff produced by a 0.75 inch storm event. A
maintenance agreement for infiltration or an annual fee for postconstruction treatment control
measures in lieu of infiltration may be required in an amount established by resolution of the
City Council.
Exception:
Required accessible routes for persons with disabilities as required by California Code of
Regulations, Title 24, Part 2, Chapter 11A and/or Chapter 11B as applicable.
Exhibit A for Ordinance No. 10-1316 2
A4.106.5 Cool roof. Roofing materials shall comply with this section.
Exception: Install roof constructions that have a thermal mass over the roof membrane with a
weight of at least 25 lb per square feet.
A4.106.5.1 Solar reflectance. Roofing materials shall have a minimum 3-year aged solar
reflectance equal to or greater than the values specified in Table A4.106.5(1).
If CRRC testing for 3-year aged reflectance is not available for any roofing products, the 3-
year aged value shall be determined using the Cool Roof Rating Council (CRRC) certified initial
value using the equation Raged = [0.2 + 0.7[ρinitial – 0.2], Where ρinitial = the initial Solar
Reflectance.
Solar reflectance may also be certified by other supervisory entities approved by the
Commission pursuant to Title 24, Part 1, Section 10-113.
A4.106.5.2 Thermal emittance. Roofing materials shall have a CRRC initial or 3-year aged
thermal emittance equal to or greater than those specified in Table A4.106.5(1).
Thermal emittance may also be certified by other supervisory entities approved by the
Commission pursuant to Title 24, Part 1, Section 10-113.
A4.106.5.3 Solar reflectance index alternative. Solar Reflectance Index (SRI) equal to or
greater than the values specified in Table A4.106.5(1) may be used as an alternative to
compliance with the 3-year aged solar reflectance values and thermal emittance.
SRI values used to comply with this section shall be calculated using the Solar Reflective
Index (SRI) Calculation Worksheet (SRI-WS) developed by the California Energy Commission
or in compliance with ASTM E1980-01 as specified in Title 24, Part 6, Section 118(i)3. Solar
reflectance values used in the SRI-WS shall be based on the 3-year aged reflectance value of
the roofing product or the equation in Section A4.106.5.1 if the CRRC certified aged solar
reflectance are not available. Certified Thermal emittance used in the SRI-WS may be either the
initial value or the three year aged value listed by the CRRC.
Solar reflectance and thermal emittance may also be certified by other supervisory entities
approved by the Commission pursuant to Title 24, Part 1, Section 10-113.
TABLE A4.106.5(1)
ROOF
SLOPE
ROOF
WEIGHT
CLIMATE
ZONE
Minimum 3-year Aged
Solar Reflectance
Thermal
Emittance SRI
> 2 : 12 < 5 lb/ft2 6 0.15 0.75 10
A4.106.5.4 Verification. Inspection shall be conducted to ensure roofing materials meet cool
roof aged solar reflectance and thermal emittance or SRI values.
Exhibit A for Ordinance No. 10-1316 3
SECTION A4.203
PERFORMANCE APPROACH
A4.203.1 Energy performance. Using an Alternative Calculation Method (ACM) approved by
the California Energy Commission, calculate each building’s energy and CO2 emissions, and
compare it to the standard or “budget” building to exceed the California Energy Code based on
the 2008 energy standards requirements by 15 percent.
SECTION A4.207
HVAC DESIGN, EQUIPMENT AND INSTALLATION
A4.207.6 Cooling equipment. When cooling equipment is installed, select cooling equipment
with a Seasonal Energy Efficiency Ratio (SEER) higher than 13.0 and an Energy Efficiency
Ratio (EER) of at least 11.5. The exterior components of cooling equipment (e.g. condensers)
shall not exceed 45 decibels at any property line located adjacent to a residential zone.
Condensers located at least 10 feet from any property line or on the roof shall be exempt from
this requirement.
A4.207.10 Ceiling fans. If ceiling fans are installed, they shall be ENERGY STAR rated.
SECTION A4.208
WATER HEATING DESIGN, EQUIPMENT AND INSTALLATION
A4.208.1 Tank type water heater efficiency. If a gas fired storage water heater is installed,
the Energy Factor (EF) shall be higher than 0.60.
A4.208.2 Tankless water heater efficiency. If a gas-fired tankless water heater is installed,
the Energy Factor (EF) shall be 0.80 or higher.
A4.208.3 Distribution systems. Where the hot water source is more than 10 feet from a
fixture, the potable water distribution system shall convey hot water using one of the following
methods:
1. A central manifold plumbing system with parallel piping configuration (“home-run system”) is
installed using the
smallest diameter piping allowed by the California Plumbing Code or an approved alternate.
2. The plumbing system design incorporates the use of a demand controlled circulation pump.
3. A gravity-based hot water recirculation system is used.
4. A timer-based hot water recirculation system is used.
5. Other methods approved by the City.
SECTION A4.210
APPLIANCES
A4.210.1 Appliance rating. Each appliance provided by the builder meets ENERGY STAR if
an ENERGY STAR designation is applicable for that appliance.
SECTION A4.303
INDOOR WATER USE
Exhibit A for Ordinance No. 10-1316 4
A4.303.1 Kitchen faucets and dishwashers.
1. The maximum flowrate at a kitchen sink faucet shall not be greater than 1.5 gallons per
minute at 60 psi.
Note: Rated flowrates for the default function of the faucet shall be used to demonstrate
compliance with this section.
2. Dishwashers shall be ENERGY STAR qualified and not use more than 5.8 gallons of water
per cycle.
SECTION A4.403
FOUNDATION SYSTEMS
A4.403.2 Reduction in cement use. Cement used in foundation mix design shall be reduced
by not less than 20 percent. Products commonly used to replace cement in concrete mix
designs include, but are not limited to fly ash, slag, silica fume or rice hull ash.
SECTION A4.408
CONSTRUCTION WASTE DISPOSAL REDUCTION, DISPOSAL AND RECYCLING
A4.408.1 Enhanced construction waste reduction. At least 65 percent of all nonhazardous
construction and demolition debris generated at the site is diverted to recycle or salvage.
A4.408.1.1 Documentation. Documentation shall be provided to the City which demonstrates
compliance with this section.
NONRESIDENTIAL CONSTRUCTION
SECTION A5.106
SITE DEVELOPMENT
A5.106.2 Storm water design. Design storm water runoff rate and quantity in conformance with
Section A5.106.2.1 and storm water runoff quality by Section A5.106.3.2.
A5.106.2.1 Storm water runoff rate and quantity. Implement a storm water management
plan resulting in no net increase in rate and quantity of storm water runoff from existing to
developed conditions. Exception: If the site is already greater than 50 percent impervious,
implement a storm water management plan resulting in a 25 percent decrease in runoff rate and
quantity. This requirement may be met by demonstrating a 25 percent decrease in site
impermeability, or retention of 25 percent of the design storm as indicated in Section
A5.106.2.2.
A5.106.2.2 Storm water runoff quality. Use postconstruction treatment control best
management practices (BMPs) to mitigate (infiltrate, filter or treat) stormwater runoff from a 0.75
inch storm event (for volume-based BMPs) or the runoff produced by a rain event equal to the
flow of runoff produced from a rain event equal to at least 0.2 inches per hour intensity (for flow-
based BMPs). Infiltration is preferred over filter, treat and release to the public storm drain
system. A maintenance agreement for infiltration or an annual fee for postconstruction treatment
control measures in lieu of infiltration may be required in an amount established by resolution of
the City Council.
Exhibit A for Ordinance No. 10-1316 5
A5.106.3 Low impact development (LID). Reduce peak runoff in compliance with Section
5.106.3.1. Employ at least two of the following methods or other best management practices to
allow rainwater to soak into the ground, evaporate into the air or collect in storage receptacles
for irrigation or other beneficial uses. LID strategies include, but are not limited to:
1. Bioretention (rain gardens);
2. Cisterns and rain barrels;
3. Green roofs meeting the structural requirements of the building code;
4. Roof leader disconnection directing downspouts to permeable surfaces or retention devices;
5. Permeable and porous paving;
6. Vegetative swales and filter strips; tree preservation; and
7. Volume retention suitable for previously developed sites.
A5.106.3.1 Implementation. If applicable, coordinate Low Impact Development (LID) projects
with the local Regional Water Quality Control Board, which may issue a permit or otherwise
require LID.
A5.106.3.2 Greyfield or infill site. Manage 40 percent of the average annual rainfall on the
site’s impervious surfaces through infiltration, reuse or evaportranspiration. This section shall
be effective on January 1, 2012. A maintenance agreement for infiltration or an annual fee for
postconstruction treatment control measures in lieu of infiltration may be required in an amount
established by resolution of the City Council.
A5.106.11.2 Cool roof. Use roofing materials having a minimum 3-year aged solar reflectance
and thermal emittance complying with Sections A5.106.11.2.1 and A5.106.11.2.2 or a minimum
aged Solar Reflectance Index (SRI)3 complying with Section A5.106.11.2.3 and as shown in
Table A5.106.11.2.1 or A5.106.11.2.2.
A5.106.11.2.1 Solar reflectance. Roofing materials shall have a minimum 3-year aged solar
reflectance equal to or greater than the values specified in Table A5.106.11.2.1.
If CRRC testing for 3-year aged reflectance is not available for any roofing products, the 3-
year aged value shall be determined using the Cool Roof Rating Council (CRRC) certified initial
value using the equation Raged = [0.2 + 0.7[ρinitial – 0.2], where ρinitial = the initial Solar
Reflectance. Solar reflectance may also be certified by other supervisory entities approved by
the Commission pursuant to Title 24, Part 1, Section 10-113.
A5.106.11.2.2 Thermal emittance. Roofing materials shall have a CRRC initial or 3-year aged
thermal emittance equal to or greater than those specified in Table A5.106.11.2.1. Thermal
emittance may also be certified by other supervisory entities approved by the Commission
pursuant to Title 24, Part 1, Section 10-113.
A5.106.11.2.3 Solar reflectance index alternative. Solar Reflectance Index (SRI) equal to or
greater than the values specified in Table A5.106.11.2.1 may be used as an alternative to
compliance with the 3-year aged solar reflectance values and thermal emittance. SRI values
used to comply with this section shall be calculated using the Solar Reflective Index (SRI)
Calculation Worksheet (SRI-WS) developed by the California Energy Commission or in
compliance with ASTM E 1980-01 as specified in Title 24, Part 6, Section 118(i)3. Solar
reflectance values used in the SRI-WS shall be based on the 3-year aged reflectance value of
the roofing product or the equation in section A5.106.11.2.1 if the CRRC certified aged solar
reflectance are not available. Certified Thermal emittance used in the SRI-WS may be either the
initial value or the three year aged value listed by the CRRC.
Exhibit A for Ordinance No. 10-1316 6
TABLE A5.106.11.2.1
ROOF
SLOPE
ROOF
WEIGHT
CLIMATE
ZONE
Minimum 3-year Aged
Solar Reflectance
Thermal
Emittance SRI
> 2 : 12 < 5 lb/ft2 6 0.15 0.75 10
Solar reflectance and thermal emittance may also be certified by other supervisory entities
approved by the Commission pursuant to Title 24, Part 1, Section 10-113.
A5.106.11.3 Verification of compliance. If no documentation is available, an inspection shall
be conducted to ensure roofing materials meet cool roof aged solar reflectance and thermal
emittance or SRI values.
SECTION A5.203
PERFORMANCE APPROACH
A5.203.1 Energy performance. For the purposes of energy efficiency standards in this code
the California Energy Commission will continue to adopt mandatory building standards. It is the
intent of this code to encourage green buildings to achieve exemplary performance in the area
of energy efficiency. Specifically, a green building should achieve more than a 15 percent
reduction in energy usage when compared to the State’s mandatory energy efficiency
standards.
Using an Alternative Calculation Method approved by the California Energy Commission,
calculate each nonresidential building’s TDV energy and CO2 emissions and compare it to the
standard or “budget” building.
A5.203.1.1 Energy efficiency – 15 percent above Title 24, Part 6. Exceed California Energy
Code requirements, based on the 2008 Energy Efficiency Standards, by 15 percent and meet
the requirements of Division A45.6.
Field verify and document the measures and calculations used to reach the desired level of
efficiency following the requirements specified in the Title 24 Reference Appendices.
A5.405.5 Cement and concrete. Use cement and concrete made with recycled products and
complying with the following sections.
A5.405.5.1 Cement. Meet the following standards for cement:
1. Portland cement shall meet ASTM C 150, Standard Specification for Portland Cement
2. Blended cement shall meet ASTM C 595, Standard Specification for Blended Hydraulic
Cement or ASTM C 1157, Standard Performance Specification for Hydraulic Cement.
A5.405.5.2 Concrete. Unless otherwise directed by the engineer, use concrete manufactured
with cementitious materials in accordance with Sections A5.405.5.2.1 and A5.405.5.2.1.1, as
approved by the City.
A5.405.5.2.1 Supplementary cementitious materials (SCMs). Use concrete made with one or
more of the following supplementary cementitious materials (SCMs):
Exhibit A for Ordinance No. 10-1316 7
1. Fly ash meeting ASTM C 618, Specification for Coal Fly Ash and Raw or Calcined Natural
Pozzolan for Use in Concrete.
2. Ultra-fine fly ash (UFFA) meeting ASTM C 618, Specification for Coal Fly Ash and Raw or
Calcined
Natural Pozzolan for Use in Concrete and CalTrans Standard Specification, Section 90-2.01B.
3. Metakaolin meeting ASTM C 618, Specification for Coal Fly Ash and Raw or Calcined Natural
Pozzolan for Use in Concrete and CalTrans Standard Specification, Section 90-2.01B.
4. Natural pozzolan meeting ASTM C 618, Specification for Coal Fly Ash and Raw or Calcined
Natural Pozzolan for Use in Concrete.
5. Slag cement (GGBFS) meeting ASTM C 989, Specification for Ground Granulated Blast-
Furnace Slag for Use in Concrete and Mortars.
6. Silica fume meeting ASTM C 1240, Specification for Silica Fume Used in Cementitious
Mixtures.
7. Other materials with comparable or superior environmental benefits, as approved by the
engineer and enforcing authority.
Note: CalTrans specifications for UFFA and metakaolin may be found in the 2009-09 updates to
the 2006 CalTrans specifications.
A5.405.5.2.1.1 Mix design equation. Use any combination of one or more SCMs, satisfying
Equation A5.4-1:
F/25 + SL/50 +UF/12 = 1 Equation A5.4-1
where:
F = Fly ash, natural pozzolan or other approved SCM, percent of total cementitious
material for concrete on the project
SL = GGBFS, including the amount in blended cement percent of total cementitious
material for concrete on the project
UF = Silica fume, metakaolin or UFFA, including the amount in blended cement, percent of
total cementitious material for concrete on the project
Exception: Minimums for concrete products requiring high early strength may be lower as
directed by the engineer.
A5.405.5.3 Additional means of compliance. Any of the following measures may be
employed for the production of cement or concrete, depending on their availability and
suitability, in conjunction with Section A5.405.5.2.
A5.405.5.3.1 Cement. The following measures may be used in the manufacture of cement.
A5.405.5.3.1.1 Alternative fuels. Where permitted by state or local air quality standards, use
alternative fuels.
A5.405.5.3.1.2 Alternative power. Use alternate electric power generated at the cement plant
and/or green power purchased from the utility meeting the requirements of Section A5.211.
A5.405.5.3.1.3 Alternative ingredients. Use inorganic processing additions and limestone
meeting ASTM C 150, Standard Specifications for Portland Cement.
Exhibit A for Ordinance No. 10-1316 8
A5.405.5.3.2 Concrete. The following measures may be used in the manufacture of concrete,
A5.405.5.3.2.1 Alternative energy. Use renewable or alternative energy meeting the
requirements of Section A5.211.
A5.405.5.3.2.2 Recycled aggregates. Use concrete made with one or more of the following
materials:
1. Blast furnace slag as a lightweight aggregate in nonreinforced concrete.
2. Recycled concrete that meets grading requirements of ASTM C 33, Standard Specification
for Concrete Aggregates.
3. Other materials with comparable or superior environmental benefits, as approved by the
engineer and enforcing authority.
A5.405.5.3.2.3 Mixing water. Use water meeting ASTM C 1602, Standard Specification for
Mixing Water Used in the Production of Hydraulic Cement Concrete, either recycled water
provided by the local water purveyor or water reclaimed from manufacturing processes.
SECTION A5.408
CONSTRUCTION WASTE REDUCTION, DISPOSAL AND RECYCLING
A5.408.3.1 Enhanced construction waste reduction.
Divert to recycle or salvage at least 65% of nonhazardous construction and demolition debris
generated at the site.
A5.408.3.1.1 Verification of compliance. A copy of the completed waste management report
shall be provided to the City.
Exceptions:
1. Excavated soil and land-clearing debris.
2. Alternate waste reduction methods developed by working with local agencies if diversion or
recycle facilities capable of compliance with this item do not exist.