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North County Recycling Center and Sanitary Landfill Monitoring Implementation Plan Page 1 1.0 Introduction This document presents the Storm Water Monitoring Implementation Plan (MIP) for the San Joaquin County North County Recycling Center and Sanitary Landfill (North County Landfill). This MIP was developed to meet the requirements given in Section XI of the NPDES, General Industrial Storm Water Permit issued by the State of California SWRCB Water Order 2014-0057-DWQ amended by Order 2015-0122-DWQ and Order 2018-0028- DWQ (General Permit). The San Joaquin County facility operates under the Standard Industrial Classification (SIC) code 4953 for “landfills, land application sites, and open dumps”. Landfills are listed under Category #5 of Attachment A of the General Permit requiring permit coverage. Furthermore, operators of landfills are required to comply with Part 445 of 40 CFR Chapter I, Subchapter N, which specifies effluent limitation guidelines (ELGs) for specific categories of industrial storm water discharges. ELGs for this facility are identified and discussed in Section 7 of the SWPPP and Section 4 of the Monitoring Implementation Plan. The State Water Resources Control Board (SWRCB) issued San Joaquin County the waste discharge identification number (WDID No.) 5S39I005571. The facility is located in unincorporated San Joaquin County approximately 9 miles east of Lodi, California. The facility includes a recycling center and sanitary landfill. Adjacent land use within 1,000 feet of the facility consists primarily of agricultural land including vineyards, pastures, field crops, and fruit and nut orchards. Several structures, including residences, have been built on properties which are within a half mile or more from the landfill. The surface drainage system consists of ditches, culverts, and drains designed to convey surface water runoff and control erosion by reducing water velocities. An on-site sedimentation basin (the Interim Sedimentation Basin or ISB) receives the majority of surface water runoff from the landfill areas. This basin discharges water to the wetland area located in the northern portion of the property. The ISB allows sediment and other pollutants to settle out before water is discharged to the wetland. Surface drainage from the on-site wetland is to South Paddy Creek (an intermittent stream that crosses the site immediately north of the landfill); thence to Paddy Creek (about 2.8 miles west of the site); Bear Creek; and Disappointment Slough, which is tributary to the San Joaquin River. A complete description of the site’s surface drainage system can be found in the Joint Technical Document described in Section 3.2 of the SWPPP. Scheduled facility operating hours are Monday through Sunday, 7 AM to 4 PM closed holidays. The objectives of this MIP are as follows: • Aid in the implementation of the Storm Water Pollution Prevention Plan (SWPPP); and • Assist the San Joaquin County facility in developing a comprehensive plan for the monitoring requirements in the General Permit and to assess their monitoring