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SECTION 1 <br />PAGE 3 OF 9 <br />b.2 NB Effluent (Permit Limit = ND, which is 0.5 ug/L for EPA Methods <br />601 and 602). <br />SAMPLING DATE 11/07/94 11/14/94 11/21/94 11/28/94 AVERAGE <br />Total 601/602 ND ND ND 2.84 1.09 <br />NB Permit Limits Exceeded <br />11/28/94 ................. Methylene Chloride*............. 2.84 ug/L <br />* Methylene Chloride is a common laboratory contaminant. <br />C.3 Outfall: Total Trihalomethanes did not exceed the drinking water standard of <br />100 ug/L. The trihalomethanes are being introduced after the Groundwater Treatment <br />Discharge point (probably the sewage treatment plant). <br />Those 601/602 contaminants detected in NB & SB effluents were not detected at <br />outfall. Need for media replacement/cleaning is being evaluated. The small <br />quantities detected in effluent were volatilized prior to reaching the outfall. <br />BTEX compounds were not detected in water treatment effluents. Levels of toluene <br />and benzene detected were below the MCL's for drinking water of 150 and 1 ug/L, <br />respectively. <br />SAMPLING DATE <br />11/07/94 <br />11/14/94 <br />11/21/94 <br />11/28/94 <br />AVERAGE <br />17 <br />a.2 <br />NB Influent <br />10 <br />Chloroform <br />2.66 <br />8.09 <br />ND <br />ND <br />2.94 <br />Toluene <br />0.66 <br />ND <br />ND <br />ND <br />0.54 <br />Benzene <br />ND <br />ND <br />0.77 <br />ND <br />0.57 <br />Bromodichloromethane <br />ND <br />0.85 <br />ND <br />ND <br />0.59 <br />Total 601/602 <br />3.32 <br />8.94 <br />0.77 <br />ND <br />4.64 <br />2. Summary of Arsenic analysis (ug/L). Detection limit <2. <br />SAMPLING DATE 11/07/94 11/14/94 11/21/94 11/28/94 AVERAGE <br />a.1 <br />SB Influent <br />13 <br />19 <br />17 <br />18 <br />17 <br />a.2 <br />NB Influent <br />10 <br />16 <br />15 <br />14 <br />14 <br />b.l <br />SB Effluent <br />13 <br />18 <br />17 <br />19 <br />17 <br />b.2 <br />NB Effluent <br />11 <br />15 <br />14 <br />15 <br />14 <br />c.1 <br />Outfall <br />8 <br />21 <br />16 <br />21 <br />17 <br />d.l <br />100' Upstr Canal <br />NS <br />NS <br />NS <br />NS <br />NS <br />e.1 <br />100' Dnstr Canal <br />NS <br />NS <br />NS <br />NS <br />NS <br />f.l <br />French Camp Slough <br />8 <br />6 <br />10 <br />11 <br />9 <br />