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1 WASTE DISCHARGE REQUIREMENTS ORDER R5-2025-0038 <br />SAN JOAQUIN COUNTY DEPARTMENT OF PUBLIC WORKS AND FOOTHILL SANITARY LANDFILL, <br />INC. <br />FOOTHILL SANITARY LANDFILL <br />SAN JOAQUIN COUNTY <br />FINDINGS <br />The Central Valley Regional Water Quality Control Board (Central Valley Water Board) <br />hereby finds as follows: <br />Introduction <br />1.On 17 April 2015, the Central Valley Water Board adopted Waste Discharge <br />Requirements (WDRs) Order R5-2015-0058 to regulate the Foothill Sanitary <br />Landfill (Facility). San Joaquin County Department of Public Works (County) <br />owns, and Foothill Sanitary Landfill, Inc. operates, the Facility. For the purpose of <br />this Order, the County and Foothill Sanitary Landfill, Inc are collectively referred <br />to as “Discharger.” <br />2.This Order amends WDRs Order R5-2015-0058 to add requirements associated <br />with the construction and use of a proposed Class II surface impoundment at the <br />Facility for the purpose of leachate management. The amendments implemented <br />by this Order are depicted in Attachment 1; newly added content is underlined <br />(e.g., new text), while removed content is shown in strikethrough (e.g., deleted <br />text). <br />Procedural Matters <br />3.All local agencies with regulatory jurisdiction over land-use, solid waste disposal, <br />air pollution and public health protection have approved the use of the Facility’s <br />site for the discharge of waste to land as provided for herein. <br />4.This Order, which amends an existing WDRs Order to authorize development <br />and operation of a Class II surface impoundment at an existing landfill , is exempt <br />from the procedural requirements of the California Environmental Quality Act <br />(CEQA) (Pub. Res. Code, § 21000 et seq.) As described in the Findings of <br />WDRs Order R5-2018-0058-01 (Attachment 1), the County, as lead agency for <br />purposes of CEQA, determined based on an environmental review that its <br />proposed activities, as authorized by this Order, constitute minor changes to an <br />existing facility that are exempt from CEQA review pursuant to California Code of <br />Regulations, title 14, section 15301. The Central Valley Water Board has <br />reviewed the County’s environmental review document and Notice of Exemption <br />and determined that the issuance of this Order, which prescribes prohibitions, <br />limitations, and specifications for minimizing water quality impacts from the <br />authorized activities, is likewise exempt from CEQA pursuant to section 15301. <br />5.The Discharger, interested agencies and interested persons were notified of the <br />Central Valley Water Board’s intent to prescribe the WDRs in this Order, and <br />provided an opportunity to submit their written views and recommendations at a <br />public hearing. (Wat. Code, § 13167.5; Cal. Code Regs., tit. 27, § 21730).