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              Sampled from Jun 1993 through Aug 1994
         8


                                          E   X           Well BG
                . ........................... ......... . .... .... .... .- . ...... W E3-..


         35                                               Well #2
                         "-" --- -                        W -----
          4 .-.- - .- ...-- ..---- -- .-- - .-.--- .-- ---- --.-.--. ---. -.................. .. .. ............... .. .. ........ ......... ..-... ...... ..... .. . .. .. . ..... ...... . . ..... ... ......

                    0......o......
                       o ................................. ............ .. ---- ..........# 3
                                        1"-....... ./'.................
          ... ... .. ............. ... .. .................... .. .. ........... ...... ..... ............ . .... .. ................... ..... ............. .. ......... .......... ......................... .......  ': .1,...........................

          0   II I    I I       I II     I   II II
          Jun Jly Aug Sep Oct Nov Dec Jan FebMarAprMayJun Jly Aug
                              Month

Figure 3.23. Monthly nitrate nitrogen levels in groundwater from four monitoring wells at Site 3-78 (mound system).


   a                                                                a


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