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WASTE DISCHARGE REQUIREMENTS ORDER NO. R5-2008-0148 -14-
<br /> LAWRENCE LIVERMORE NATIONAL SECURITY, LLC AND
<br /> THE U.S. DEPARTMENT OF ENERGY FOR
<br /> LAWRENCE LIVERMORE NATIONAL LABORATORY SITE 300
<br /> SAN JOAQUIN AND ALAMEDA COUNTIES
<br /> Septic Systems
<br /> 58.Thirty-three (33) facilities, which are remotely located throughout the site,
<br /> have septic systems. These septic systems are located at Buildings 801,
<br /> 802, 805, 806, 807, 809, 810, 812, 813, 817, 818, 819, 825, 826, 827, 830,
<br /> 832, 833/835, 834, 836, 841, 848, 850, 851, 854, 855A, 858, 865, 882, 892,
<br /> 895, 897, and 899 as shown on Attachment 2.
<br /> 59.The geology and hydrogeology vary across the site and are described in the
<br /> April 1994 Final Site-Wide Remedial Investigation. Land use within 1,000 feet
<br /> of the septic systems is within Site 300 with two exceptions. Within Site 300
<br /> the land uses include open space and buildings used for offices, research,
<br /> and explosives storage, processing and testing. The septic systems at
<br /> Buildings 834 and 899 are within 1,000 feet of the site boundary. Offsite land
<br /> uses within 1,000 feet of these two buildings include off-road vehicle
<br /> recreation, park ranger housing and livestock grazing on neighboring
<br /> properties.
<br /> 60.Septic systems used at Site 300 have been constructed over the 52-year life
<br /> of the facility and vary in design and capacity. Flows to the septic systems at
<br /> Site 300 are estimated to range from under 10 to just over 300 gpd, which is
<br /> lower than typical residential flows. Attachment 22, a part of this Order,
<br /> provides a summary of the Site 300 septic systems design and waste
<br /> streams.
<br /> 61.The Discharger has registered all the septic systems to which mechanical
<br /> equipment wastewater or cooling tower blowdown is discharged as Class V
<br /> Injection Wells with the USEPA. None of the purely domestic waste septic
<br /> systems at Site 300 serve more than 20 people so are not considered
<br /> Class V Injection Wells.
<br /> 62.Domestic waste is discharged to all of the septic systems. Domestic waste
<br /> includes discharges of sanitary wastes from restroom and shower facilities,
<br /> washing machines, kitchens, and housekeeping activities. Mechanical
<br /> equipment and cooling tower wastewater is discharged to 12 septic systems
<br /> at Buildings 801, 802, 805, 813, 819, 825, 826, 830, 833/835, 834A, 850, and
<br /> 851. Mechanical equipment wastewater may include discharges from boilers,
<br /> vacuum pumps, pressure relief valves on hot water/steam equipment,
<br /> humidifiers, filter drains, and water softeners, as well as condensates from air
<br /> compressors, air conditioners, and refrigeration units.
<br /> 63.The Discharger analyzed mechanical equipment wastewater from the
<br /> Building 827 Complex and Building 806, and cooling tower blowdown from
<br />
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