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TETRA TECH Technical Memorandum Date: November 11,2022 To: Craig Lawrence, Project Manager, NextEra Energy Resources From: Jessica Taylor,Soil Conservationist/Ecologist,Tetra Tech Subject: Land Evaluation and Site Assessment for the Griffith Energy Storage Project in San Joaquin County,California 1.0 Introduction The Land Evaluation and Site Assessment(LESA) model is an approach for rating the relative quality of land resources based upon specific measurable features.The LESA model was first developed by the federal Natural Resource Conservation Service(NRCS) in 1981. It was subsequently adopted in 1990 by the California Department of Conservation to evaluate land use decisions that affect the conversion of agricultural lands in California (Public Resources Code Section 21095).The formulation of the California Agricultural LESA Model is intended to provide lead agencies under the California Environmental Quality Act(CEQA)with a methodology to ensure that agricultural land conversions are quantitatively and consistently considered in the environmental review process. The Griffith Energy Storage Project(Project),which includes an energy storage system,will be located on land that has historically been used for low-intensity cattle grazing. Nine acres of the impacted area are considered prime farmland if irrigated, however the land is not currently irrigated,according to the Water Provision Declaration signed by the landowner as part of the Project application (NRCS 2022;Griffith 2022).Average precipitation in the immediate vicinity of the Project is 10.73 inches a year(NOAH 2022). The Project will lease 106 acres; however,the Project will only convert approximately 32 acres to battery storage,as shown on Figure 1. The assessment concludes that the conversion of the approximately 32 acres of agricultural land by the Project will not result in a significant lossof farmland according to the LESA Model. 2.0 California Land Evaluation and Site Assessment Model The following sections align with the California LESA Model worksheets published by the NRCS. Each section is built on the information in the previous section and results in a final score that is the basis for the final determination.The scores for each section are derived from the tables within the LESA manual. Land Capability Classification and Storie Index Scores The Land Capability Classification (LCC) indicates the suitability of soils for most kinds of crops. Soils are rated from Class I to Class VIII,with soils having the fewest limitations receiving the highest rating. Subclasses Tetra Tech 17885 Von Karman Avenue,Suite 500,Irvine,CA 92614 Tel+1.949.809.5000 1 tetratech.com