0


Figure 4.1 Ammonia and TKN Concentrations for the septic tank at Site 1.


      0I  I     I         I   I     I    I    I    I|             I       I
 SEP  OCT  NOV  DEC  JAN   FEB MAR   APR  MAY  JUN  JUL  AUG   SEP  OCT  NOV  DEC
        1991                                      1992

Figure 4.2 Nitrate/Nitrite, Ammonia, TKN, and Total Nitrogen concentrions
            for the pump chamber in the recirculating sand filter at Site 1.


s0
                                     PUMP
                                     STARTED               ......................... I
                                     .   . .. .. .. . . .. .... . . . . . . . . .. . . . . . .
       40     - - 1 . . . . . i . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . - . . . . . . . . . . . . . . .

                                                 --------------------------------------------------- --\.- -----------------
30  -----------------  -- ---------- --
                                      S-......                            ..............




20


10


                      [,  iI                             NOV...           U 1,, -


100



  so

z
0
F60

z
U
Z 40
0
U
z
(9
0 20

z


,14%                                         --    RSF           PUMP
    ---------- - ------------------- -   TNT'AL'Eb-------D  - - -l - - - -


             *. 41 *~ 1
           " ** *% ....f.. .         .r ...... .. ....

   - - - -, -,             . . . . -. -. . . . -, - - - - - - - - - - --- - - -... - J .r - = - ., - V


                                                                            rjL


.jijj... -                  " .. -           .      .----- ---- - --- - --


AUG


0


NOV


U t:t_


OCT