Appendix F - Supplemental Energy MemoAppendix F
Supplemental Energy Memo
MSA Consulting, 2022
Travertine SPA
Draft EIR
SCH# 201811023
Technical Appendices
October 2023
LII
June 28, 2022
MSA :ONSULTING, I \C.
PLANNING > CIVIL ENGINEERING a LAND SURVEYING
Supplemental Energy Memo for the Travertine Development Project
This Supplemental Energy Memo has been prepared by MSA Consulting, Inc. to provide
additional context, calculations, and formulas used within Section 4.6, Energy Resources, of this
Draft EIR. The calculations provided herein utilized the output figures from the California
Emissions Estimator Model (CaIEEMod) Version 2016.3.2 Modeling Data, provided by Urban
Crossroads, Inc. in their Greenhouse Gas Analysis (Appendix H). CaIEEMod is a Statewide land
use emissions computer model designed to provide a uniform platform to quantify potential
criteria pollutant and greenhouse gas (GHG) emissions associated with both construction and
operations from land use projects. CaIEEMod was used to determine the energy consumed via,
electricity, natural gas, and petroleum during construction and operation of the proposed project
using the GHG emission values.
CaIEEMod Version 2016.3.2 was utilized in the Greenhouse Gas Analysis because it was the most
current version of the software at the time the report was written in January 2022. However, in
May 2022, the California Air Pollution Control Officers Association (CAPCOA) in conjunction with
other California air districts, including the South Coast Air Quality Management District
(SCAQMD), released the latest version of the CaIEEMod: Version 2022.1. The Greenhouse Gas
Analysis provided by Urban Crossroads was prepared before the release of the 2022.1 version.
Accordingly, the latest version of CaIEEMod was used to determine project operational
emissions. The findings of the new CaIEEMod outputs are included in Urban Crossroad's
Operational Memo (Appendix C.2).
The analysis below includes the original CaIEEMod Version 2016.3.2 output to analyze project
construction energy use, and the updated CaIEEMod Version 2022.1 output to analyze project
operational energy use.
Construction
Energy resources consumed during construction of the project site includes electricity and
petroleum. Natural gas is not anticipated to be required during construction of the project.
During grading and construction of the proposed project, electricity would be consumed to
supply and convey water for dust control and, on a limited basis, may be used to power lighting,
and electronic equipment. Electricity consumed for onsite construction trailers, which are used
by managerial staff during the hours of construction activities and other construction activities
necessitating electrical power would be provided by IID.
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Travertine Supplemental Energy Memo
Draft Environmental Impact Report
Appendix F
Electricity consumption during project construction was determined using the following formula:
Days Grading x Acres (acres disturbed during grading) x 3,020 gallons per acre per day x
0.009727 kWh/gallons = Electricity Consumed kWh
This is based on the water for dust control, which is calculated from the total days of grading, the
acreage disturbed on the project site along with water usage factor per day (based on the Air and
Waste Management Association, 1992), and a supply water electricity intensity factor (CaIEEMod
default for the Salton Sea Air Basin). The electricity consumed was calculated for each site
preparation and grading phase of the project. See Table 1 below.
Table 1 Summary of Electricity Use During Construction
Phase
Subphase
Days
Grading
Acres
Graded
(per day)
Total Acres
Graded
Electricity
Consumed
(kWh)*
Phase A Grading Activities
Grading & Water Tank
Grading
521
5
2605
76,523.3
Well Construction
Well #1 through 9
Site Preparation
10**
1**
10**
1,469***
Substation Construction
Substation
Grading
90
1
90
2,643.8
Phase B Grading Activities
Grading
Grading
522
5
2610
76,670.2
Physical Construction
Phase 1
(2026-2029)
Site Preparation
50
5
250
7,343.9
Grading
50
5
250
7,343.9
Phase 2
(2029-2031)
Site Preparation
30
5
150
4,406.3
Grading
30
5
150
4,406.3
Phase 3
(2031-2033)
Site Preparation
35
5
175
5,140.7
Grading
35
5
175
5,140.7
Total Electricity Consumed
191,088.1
Note: Electricity Consumed is determined by: Days Grading x Acres (acres disturbed during grading) x 3,020 gallons
per acre per day (Air and Waste Management Association, 1992) x 0.009727 kWh/gallons (CaIEEMod default for
Salton Sea Air Basin).
*Numbers are rounded.
**Timing and grading acreage for each well.
***Each well site would consume 293.8 kWh. Multiplied by 5 (the number of wells proposed) is 1,469 kWh.
For petroleum consumption during construction of the project, the CaIEEMod values for carbon
dioxide (CO2) emissions during each construction phase were converted to kilograms/CO2 per
gallon by multiplying the CO2 emissions by 1,000. Then kilograms/CO2/gallon was divided by 8.89
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Travertine Supplemental Energy Memo
Draft Environmental Impact Report
Appendix F
kg/CO2 for gasoline consumption (worker demand), or 10.18 kg/CO2 for diesel consumption
(vendor or equipment demand) to calculate gallons consumed during project construction.
(x) MT CO2e/year x 1,000 = (y) kg/CO2/gallon
(y) kg/CO2/gallon - 8.89 kg/CO2 = Construction Worker Gasoline Demand
(y) kg/CO2/gallon =10.18 kg/CO2 = Vendor/Equipment Vehicle Diesel Demand
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Travertine Supplemental Energy Memo
Draft Environmental Impact Report
Appendix F
Table 2 Construction Worker Gasoline Demand
Phase
Subphase
Days
Trips
Miles
Kg/CO2/Gallon
Gallons
Phase A Grading Activities
Grading & Water
Tank
Demolition
390
3
11
3,548.7
399.2
Grading
521
20
11
30,897.8
3,475.6
Well Construction
Well #1 through 9
Site Preparation
10
23
11
597.2*
67.2**
Trenching
41
18
11
1,911.1*
215.0**
Building Const.
15
4
11
155.7*
17.5**
Substation Construction
Substation
Demolition
15
43
11
1,932.5
217.4
Grading
90
83
11
22,380.4
2,517.5
Building Const.
287
21
11
17,729.8
1,994.4
Phase B Grading Activities
Grading
Demolition
585
3
11
4890.6
550.1
Grading
522
20
11
28,452.7
3,200.5
Physical Construction
Phase 1
(2026-2029)
Site Preparation
50
18
11
2,588.5
291.2
Grading
50
20
11
2,876.1
323.5
Building Const.
800
271
11
583,751.9
65,663.9
Arch. Coating
330
54
11
46,681.4
5,251.0
Paving
55
15
11
2,144.3
241.2
Phase 2
(2029-2031)
Site Preparation
30
18
11
1,365.7
153.6
Grading
30
20
11
1,517.4
170.7
Building Const.
450
169
11
189,740.3
21,343.1
Arch. Coating
175
34
11
14,681.4
1,651.5
Paving
35
15
11
1,295.4
145.7
Phase 3
(2031-2033)
Site Preparation
35
18
11
1,527.0
171.8
Grading
35
20
11
1,696.7
190.9
Building Const.
450
288
11
310,614.0
34,939.7
Arch. Coating
200
58
11
27,570.1
3,101.2
Paving
40
15
11
1426.0
160.4
Total Construction Worker Gasoline Consumed
147,652.6***
*Kg/CO2/Gallons were calculated by taking the average of the Kg/CO2/Gallons of each well site as calculated in
the GHG Analysis.
**Gallons were calculated by taking the Kg/CO2/Gallon calculated and then divided by 10.18.
***This number does not equal the sum of the numbers in the "Gallons" column. This is because the well sites 1
through 9, occupies one set (site prep., grading, and building construction) of rows. The gallons number in the
well site row was multiplied by 5 (the number of well sites that will be developed) to get 1,498.5 gallons. This
number was added to the other rows to get a total of 147,652.6 gallons of gasoline consumed during the
construction of the project.
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Travertine Supplemental Energy Memo
Draft Environmental Impact Report
Appendix F
Table 3 Construction Vendor Diesel Fuel Demand
Phase
Subphase
Days
Trips
miles
Kg/CO2/Gallon
Gallons
Well Construction
Well #1 through 9
Building Const.
15
2
5.40
290.4*
28.5**
Substation Construction
Substation
Building Const.
287
8
5.40
22,670.4
2,226.9
Physical Construction
Phase 1 (2026-2029)
Building Const.
800
75
5.40
583,566.5
7,324.8
Phase 2 (2029-2031)
Building Const.
450
33
5.40
142,752.6
14,022.9
Phase 3 (2031-2033)
Building Const.
450
74
5.40
319,774.5
31,412.0
Total Construction Vendor Diesel Consumed
55,129.1***
*Kg/CO2/Gallons were calculated by taking the average of the Kg/CO2/Gallons of each well site as calculated in
the GHG Analysis.
**Gallons were calculated by taking the Kg/CO2/Gallon calculated and then divided by 10.18. This number will
be multiplied by 5 (the number of well sites proposed) to get the sum of the construction vendor diesel
demand.
***This number does not equal the sum of the numbers in the "Gallons" column. This is because the well sites
1 though 9, occupies one set (site prep., grading, and building construction) of rows. The gallons number in
the well site row was multiplied by 5 (the number of well sites that will be developed) to get 11,134.5 gallons.
This number was added to the other rows to get a total of 55,129.1 gallons of diesel consumed during the
building construction phase of the project due to vendor trips.
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Travertine Supplemental Energy Memo
Draft Environmental Impact Report
Appendix F
Table 4 Construction Equipment Diesel Fuel Demand
Phase
Subphase
Days
Equipment
Units
Kg/CO2/Gallon
Gallons
Phase A Grading Activities
Grading & Water
Tank
Demolition
390
1
484,508.2
47,594.1
Grading
521
8
1,649,195
162,003.4
Well Construction
Well #1 through 9
Site Preparation
10
9
48,500.9*
4,764.3**
Trenching
41
7
284,174.5*
27,915.0**
Building Const.
15
15
183,524.6*
18,027.9**
Substation Construction
Substation
Demolition
15
17
131,091.1
12,877.3
Grading
90
33
1,571,063.0
154,328.4
Building Const.
287
54
6,466,378.0
635,204.1
Phase B Grading Activities
Grading
Demolition
585
1
726,719.5
71,387.0
Grading
522
8
1,651,899
162,269.1
Physical Construction
Phase 1
(2026-2029)
Site Preparation
50
7
126,065.4
12,383.6
Grading
50
8
158,227.9
15,547.9
Building Const.
800
9
11,500,775
1,129,742.0
Arch. Coating
330
1
56,248.1
5,525.4
Paving
55
6
55,498
5,451.7
Phase 2
(2029-2031)
Site Preparation
30
7
75,639.2
7,430.2
Grading
30
8
94,936.7
9,325.8
Building Const.
450
9
917,289.1
90,107.0
Arch. Coating
175
1
29,818.1
1,919.1
Paving
35
6
42,223.5
4,147.7
Phase 3
(2031-2033)
Site Preparation
35
7
105,308.0
10,344.6
Grading
35
8
132,235.8
12,989.8
Building Const.
450
9
976,300.4
95,903.8
Arch. Coating
200
1
34,077.8
3,347.5
Paving
40
6
48,255.5
4,740.2
Total Construction Worker Gasoline Consumed
2,908,105.7***
*Kg/CO2/Gallons were calculated by taking the average of the Kg/CO2/Gallons of each well site as calculated in
the GHG Analysis.
**Gallons were calculated by taking the Kg/CO2/Gallon calculated and then divided by 10.18. This number will
be multiplied by 5 (the number of well sites proposed) to get the sum of the construction equipment diesel
demand.
***This number does not equal the sum of the numbers in the "Gallons" column. This is because the well sites
1 through 9, occupies one set (site prep., grading, and building construction) of rows. The gallons number in
the well site row was multiplied by 5 (the number of well sites that will be developed) to get 253,536 gallons.
This number was added to the other rows to get a total of 2,908,105.7 gallons of diesel consumed during the
use of construction equipment during development of the project.
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760.320.9811 MSACONSULTINGINC.COM
Travertine Supplemental Energy Memo
Draft Environmental Impact Report
Appendix F
Operation
For operation of the proposed project, CaIEEMod calculates the electricity and natural gas
consumption based on project features including land uses, building square footages, modeling
default inputs, and specific user inputs (if any). As stated above, CaIEEMod Version 2022.1 was
used to determine project -related operational energy use.
Table 5 Project Electricity Demand CaIEEMod Version 2022.1
Land Use
Electricity Use
kWh/yr
Apartments Low Rise
3,026,281
Hotel
2,882,475
Golf Course
0
Single Family Housing
7,079,147
Other Asphalt Surfaces
0
Total Demand (kWh/yr)
12,987,903
Table 6 Proposed Project Operational Natural Gas Demand
CaIEEMod Version 2022.1
Land Use
Natural Gas Use
kBTU/yr
Apartments Low Rise
7,500,838
Hotel
9,015,851
Single Family Housing
26,957,750
Golf Course
0
Other Asphalt Surfaces
0
Total Demand (kBTU/yr)
43,474,439
Note: 43,474,439 kBTU/yr is approximately 114,858.3 cf/day per the 1 cf to
1.037 kBTU conversion and 365 days a year.
For operational petroleum use, project -related gasoline and diesel consumption was calculated
using the VMTs from the Project -specific VMT Evaluation provided by Urban Crossroads
(Appendix M.2) and the total mobile source emission value generated by CaIEEMod modeling
(Appendix H).
Similar to the petroleum consumption methodology used for project construction, for
operational petroleum consumption the total mobile CO2 emissions was converted to
kilograms/CO2 per gallon by multiplying the CO2 emissions by 1,000. This value was then divided
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Travertine Supplemental Energy Memo
Draft Environmental Impact Report
Appendix F
by 8.89 kg/CO2 for gasoline consumption (approximately 92.5% of VMT burned), or 10.18 kg/CO2
for diesel consumption (approximately 7.5% of VMT burned). This provides the gallons of
gasoline and diesel consumed during project operation.
Operational Gasoline Demand: (x) MT CO2e/year x 92.5% = (y) MT/CO2e/year Gasoline Demand
(y) MT/CO2e/year x 1,000 = (z) kg/CO2/gallon
(z) kg/CO2/gallon - 8.89 kg/CO2 = Construction Worker Gasoline Demand
Operational Diesel Demand: (x) MT CO2e/year x 92.5% = (y) MT/CO2e/year Diesel Demand
(y) MT/CO2e/year x 1,000 = (z) kg/CO2/gallon
(z) kg/CO2/gallon =10.18 kg/CO2 = Vendor/Equipment Vehicle Diesel Demand
Table 7 Proposed Project Operational VMT
Land Use
Annual VMT
(Project Buildout)
Residential
17,710,712.5
Employee
1,967,350
Total Annual VMT
19,678,062.5
Note: Project Buildout is the cumulative annual VMT value assuming
total project buildout.
Table 8 Proposed Project Operational Annual Petroleum
Additional Notes
Number of Well Sites analyzed in the GHG Analysis and the Energy Section:
On October 26, 2017, CVWD produced a Preliminary Hydraulic Model for providing domestic
water to the project. At that time, the gross project acreage of 878 acres was used to determine
that 9 well sites were required for the development. (Section 5.6.1, Well Sites of the CVWD
Development Design Manual, requires 1 well site per 100 acres or major portion thereof, major
portion being 50 or more acres.)
In 2021, an update to the Hydraulic Model was recommended by CVWD due to the project's
revised phasing. In a letter from CVWD, dated February 8, 2021, the project description identified
that a portion of the previously analyzed gross acreage included open space and the analysis of
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Annual VMT
KgCO2e
Kg/CO2/Gallon
Annual Gallons
Gasoline
18,202,207.8
11,270,000
8.89
1,267,716.5
Diesel
1,475,854.7
918,750
10.18
90,250.5
Total Annual Petroleum
1,357,967
Additional Notes
Number of Well Sites analyzed in the GHG Analysis and the Energy Section:
On October 26, 2017, CVWD produced a Preliminary Hydraulic Model for providing domestic
water to the project. At that time, the gross project acreage of 878 acres was used to determine
that 9 well sites were required for the development. (Section 5.6.1, Well Sites of the CVWD
Development Design Manual, requires 1 well site per 100 acres or major portion thereof, major
portion being 50 or more acres.)
In 2021, an update to the Hydraulic Model was recommended by CVWD due to the project's
revised phasing. In a letter from CVWD, dated February 8, 2021, the project description identified
that a portion of the previously analyzed gross acreage included open space and the analysis of
34200 Bob Hope Drive, Rancho Mirage, CA 92270
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Travertine Supplemental Energy Memo
Draft Environmental Impact Report
Appendix F
domestic water facilities was based on the net developed acreage of 478 acres. This letter
identified that the project would require 5 well sites, 2 of which would be required with Phase I
of the project.
Therefore, the project's analysis of energy consumed during construction of the nine well sites is
conservative, since the project would be developing five well sites.
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760.320.9811 MSACONSULTINGINC.COM