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Phelan Development Holly Master Plan - Buildings H & 1 15188.000.006 Geotechnical Exploration addition, the recommended values assume maximum axial loads of 30 and 52 kips for single and tandem axle vehicles, respectively. TABLE 9.2-1: Recommended Concrete Pavement Sections (INCHES) (INCHES) 200 8 6 500 8'/2 6 1,000 9 6 Note: Calculations are based on the presence of a concrete shoulder or curbs Control joints should be provided and they should at least conform to the minimum spacing in accordance with Portland Cement Association guidelines. The civil engineer should determine the appropriate traffic indexes based on the estimated traffic loads and frequencies. 9.3 SUBGRADE AND AGGREGATE BASE COMPACTION Finish subgrade and AB should be compacted in accordance with the Fill Compaction section of this report. AB should meet the requirements for 3/4-inch maximum Class 2 Aggregate Base in accordance with the latest Caltrans Standard Specifications. 9.4 CUT-OFF CURBS Saturated pavement subgrade or AB can cause premature failure or increased maintenance of asphalt concrete pavements. This condition often occurs where landscape areas directly abut and drain toward pavements. If desired to install pavement cutoff barriers, they should be considered where pavement areas lie downslope of any landscape areas that are to be sprinklered or irrigated, and should extend to a depth of at least 4 inches below the base rock layer. Cutoff barriers may consist of deepened concrete curbs or deep-root moisture barriers. If reduced pavement life and greater than normal pavement maintenance are acceptable to the owner, then the cutoff barrier may be eliminated. 10.0 LIMITATIONS AND UNIFORMITY OF CONDITIONS This report presents geotechnical recommendations for design of the improvements discussed in Section 1.3 for the Holly Master Plan - Buildings H & I project. If changes occur in the nature or design of the project, we should be allowed to review this report and provide additional recommendations, if any. It is the responsibility of the owner to transmit the information and recommendations of this report to the appropriate organizations or people involved in design of the project, including but not limited to developers, owners, buyers, architects, engineers, and designers. The conclusions and recommendations contained in this report are solely professional opinions and are valid for a period of no more than 2 years from the date of report issuance. We strived to perform our professional services in accordance with generally accepted principles and practices currently employed in the area; there is no warranty, express or implied. There are risks of earth movement and property damages inherent in building on or with earth materials. We are unable to eliminate all risks; therefore, we are unable to guarantee or warrant the results of our services. ENGEOPage 122 December 13, 2021 Expect Excellence