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WASTE DISCHARGE REQUIREMENTS ORDER NO. R5-2008-0148 LAWRENCE LIVERMORE NATIONAL SECURITY, LLC AND THE U.S. DEPARTMENT OF ENERGY FOR LAWRENCE LIVERMORE NATIONAL LABORATORY SITE 300 SAN JOAQUIN AND ALAMEDA COUNTIES ATTACHMENT 10 Sewage percolation pond influent; water quality parameters analyzed in samples of discharge to the sewage percolation pond, sampled at location DSWP. Parameter 2/2/02 2/19/02 3/7/02 12/20/02 2/11/03 pH (units) 9.6 9.7 9.9 9.8 9.92 Specific conductance 9,800 11,000 10,000 8,400 6,700 mhos/cm Biochemical oxygen demand 70 <39 54 31 86 m /L Fecal coliform (MPN/100mL)a 1,400 1,100 4,300b 700 130 Total coliform (MPN/100mL)a 13,000 5,400 24,000 2,200 1,600 Nitrate as NO3 <4.4 <4.4 <4.4 <0.5 <0.5 Nitrate as N <1 <1 <1 <0.5 <0.5 Nitrate + nitrite as N <1 <1 <1 <0.1 <0.1 Total Kjeldahl nitrogen 37 24 84 20 27 Ammonia as N 0.3 <0.5 <0.4 0.1 0.1 Nitrite as N 0.020 0.020 0.026 <0.5 <0.5 Nitrite as NO2 0.066 0.066° 0.087° <0.5 <0.5 Parameter 1/27/04 2/25/04 1/3/05 3/9/05 1/4/06 pH (units) 9.6 9.7 9.0 9.8 9.4 Specific conductance 7,100 6,800 7,360 3,770 4,620 ( mhos/cm) Biochemical oxygen demand 48 130 51 38 45 m /L Fecal coliform (MPN/100mL)a 1,600 1,600 700 90,000 30,000 Total coliform (MPN/100mL)a 1,600 1,600 16,000 >160,000 30,000 Nitrate as NO3 <0.5 <2.2 0.65 - <1.0 Nitrate as N - - - - <0.4 Total Kjeldahl nitrogen - - - - 25 Ammonia as N - - - - 0.15 Nitrite as N - - - - 0.15 Nitrite as NO2 - - - I - I <0.5 aMPN = Most probable number (of colony forming organisms). bResult is considered an estimate because of analytical laboratory error. 'The result has an estimated value less than the normal reporting limit for nitrite as NO2.