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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION ORDER NO. 88-208 WASTE DISCHARGE REQUIREMENTS FOR PACIFIC ENERGY, INC. AND THE CITY OF STOCKTON PACIFIC ENERGY, INC., STOCKTON GENERATING SITE SAN JOAQUIN COUNTY The California Regional Water Quality Control Board, Central Valley Region, (here- after Board) finds that: 1. Pacific Energy, Inc. , submitted a Report of Waste Discharge, dated 16 August 1986. The property is owned by the City of Stockton. Pacific-Energy, Inc. , and the City of Stockton are hereafter jointly referred to as Discharger. 2 . The Board, on 16 December 1977, adopted Order No. 77-288 which prescribed requirements for the Austin Road Class II-2 solid waste disposal site operated by the City of Stockton. 3. Pacific Energy, Inc. , will operate a landfill gas recovery system at the Austin Road solid waste disposal site under contract with the City of Stockton. The gas is used to power an electrical generation plant at the northwest corner of the site (Attachment A) . This plant receives gas from a series of collection wells distributed across the landfill. Condensate from this gas collection network will be intercepted at several condensate traps within the collection network. Condensate enters the traps and then infil- trates the landfill . In addition to these traps an average of 35 gallons per day (design flow of 200 gallons per day) of condensate collects at the plant. This fluid, called return condensate, will be returned to the landfill via a single leachline, as specified in Discharge Specifica- tion B.2. 4. Under Section 2511(e) of Title 23, California Code of Regulations (CCR) , discharges of condensate from methane gas recovery operations to the landfill are exempt from the requirements of Subchapter 15, Chapter 3, Title 23 of the CCR if the following conditions are met: a. Condensate shall have no chemical additives which could adversely affect containment features, and shall consist of water only and liquid contami- nants removed from gas recovered at a waste management unit. b. Condensate shall be discharged to a different landfill waste management unit with a leachate collection and removal system operated under waste discharge requirements issued by the Regional Board, or returned to the waste management unit(s) from which it came. c. The Discharger shall submit a Report of 'Taste Discharge to the Regional Board pursuant to Subchapter 9, Chapter 3, Title 23, CCR, and shall discharge condensate only in compliance with waste discharge requirements.