Appendix II: CRI's Report

Schedule of Procedures and Associated Findings

Obtained the following from Geosyntec Consultants, Inc.

Milestone 2022 Carbon Sequestration Calculation worksheet (Worksheet) from the 2022 Avoided CO₂ Production and Sequestration Carbon Calculations workbook
Hydrocarbon Sequestration and Avoided Carbon Dioxide Emissions Process and Calculation Standard dated March 2023 (Standard)
2022 Straight Average Total Petroleum Hydrocarbon Calculation Memorandum dated March 16, 2023 (Memorandum)

Performed the following procedures with respect to the sample data on the Worksheet

Compared the 2022 Volume (bbl) for each waste stream to the detail report of waste volumes delivered to Milestone waste disposal facilities (Volume) and noted no differences.
Compared the average total petroleum hydrocarbon content (TPH Content) for each carbon chain length for each waste stream to the Memorandum and noted no differences.

Performed the following procedures with respect to each Hydrocarbon Group on the Worksheet

Compared the waste stream density (kg/bbl) (Density), percent weight of carbon (PWC), and relative molecular weight ratio (MWR) to Table 2, Table 3, and Equation 3, respectively, in the Standard and noted no differences.

Performed the following procedures with respect to the Total Sequestered Carbon and Total Potential Avoided CO₂ Production from Hydrocarbon Degradation data on the Worksheet

Recalculated the sequestered carbon chain (kg) (SCC) for each waste stream using the volume, density, TPH Content, and PWC included in the Worksheet and noted no differences.
Recalculated the total potential avoided carbon dioxide production (PACDP) for each waste stream using the SCC and relative MWR included in the Worksheet and noted no differences.

Performed the following procedures with respect to the Avoided CO2 Production from Hydrocarbon Degradation Relative to Landfarming Scenario data on the Worksheet

For each hydrocarbon group compared the mass percent degraded to carbon dioxide during landfarming operations (MPD) to the Standard and noted no differences.
Recalculated the avoided carbon dioxide production (ACDP) for each waste stream using Volume, Density, TPH Content, PWC, MPD and relative MWR in the Worksheet and noted no differences.

Performed the following procedures to the Summary of Analysis on the Worksheet

Totaled the SCC for each waste stream and compared it to the Summary of Analysis.
Totaled the PACDP for each waste stream and compared it to the Summary of Analysis.
Totaled the ACDP for each waste stream and compared it to the Summary of Analysis.

CRI Totals

Total SCC – 113,655
Total PACDP – 416,732
Total ACDP – 306,085

Summary of Analysis

Total SCC – 113,655
Total PACDP – 416,732
Total ACDP – 306,085

No differences noted.