**********************************************
       *** SURFACE WATER DATABASE SUMMARY DATA    ***
       **********************************************
             PESTICIDE SAMPLING AT SITE 13-8
       **********************************************
COUNTY: IMPERIAL
LOCATION: Alamo River at Holtville WTP
MTRS: S15S15E21
lat/long:    32.8064 / -115.4331

PART I. PESTICIDES DETECTED AT SITE 13-8
******************************************************************
                                                  CONCENTRATION
 CHEMICAL                   SAMPLE DATE          [ug/L = ppb]
----------------------------------------------------------------
carbaryl                      06/21/93                 0.230
carbaryl                      10/04/93                 0.780
carbofuran                    03/15/93                 0.920
carbofuran                    02/14/94                 0.160
chlorpyrifos                  10/04/93                 0.150
diazinon                      03/15/93                 0.280
diazinon                      06/21/93                 0.290
diazinon                      10/04/93                 0.420
diazinon                      11/01/93                 0.200
diazinon                      01/24/94                 0.100
dimethoate                    03/15/93                 0.280
dimethoate                    01/24/94                 0.066
diuron                        10/04/93                 0.400
diuron                        11/01/93                 2.200
diuron                        02/14/94                 0.700
endosulfan                    03/15/93                 0.020
endosulfan                    06/21/93                 0.065
endosulfan                    01/24/94                 0.060
endosulfan II                 03/15/93                 0.030
endosulfan II                 06/21/93                 0.052
endosulfan II                 01/24/94                 0.039
endosulfan sulfate            03/15/93                 0.130
endosulfan sulfate            06/21/93                 0.390
endosulfan sulfate            08/16/93                 0.034
endosulfan sulfate            10/04/93                 0.131
endosulfan sulfate            01/24/94                 0.063
linuron                       11/01/93                 0.280
linuron                       01/24/94                 0.120
linuron                       02/14/94                 0.230
malathion                     03/15/93                 0.080
methomyl                      10/04/93                 0.080
methomyl                      11/01/93                 0.430
pendimethalin                 01/24/94                 0.100
phorate                       01/24/94                 0.071
phosmet                       03/15/93                 0.630


PART II. PESTICIDES SAMPLED FOR BUT NOT DETECTED AT SITE 13-8
LOCATION: Alamo River at Holtville WTP
******************************************************************
 CHEMICAL                        NUMBER SAMPLES
-----------------------------------------------
3-hydroxycarbofuran                         5
aldicarb                                    7
aldicarb sulfone                            5
aldicarb sulfoxide                          5
aminocarb                                   4
azinphos-methyl                             7
azinphos-methyl-oa                          5
barban                                      4
benomyl                                     4
bromacil                                    4
carbaryl                                    5
carbofuran                                  5
chloroxuron                                 4
chlorpropham                                4
chlorpyrifos                                6
chlorpyrifos OA                             5
coumaphos                                   4
ddvp (dichlorvos)                           7
demeton                                     4
diazinon                                    3
diazoxon                                    5
dimethoate                                  6
diphenamid                                  4
disulfoton                                  4
diuron                                      1
endosulfan                                  2
endosulfan II                               2
eptc                                        4
ethion                                      4
ethoprop                                    7
ethyl parathion                             7
ethyl parathion OA (paraoxon)               5
fensulfothion                               4
fenthion                                    4
fenuron                                     4
fluometuron                                 4
fonofos                                     5
linuron                                     1
malaoxon                                    5
malathion                                   6
merphos                                     7
methidathion                                5
methiocarb                                  7
methiocarb sulfone                          5
methiocarb sulfoxide                        5
methomyl                                    5
methyl isothiocyanate                       4
methyl paraoxon                             5
methyl parathion                            7
methyl trithion                             4
mevinphos                                   4
mexacarbate                                 4
monuron                                     4
naled                                       4
neburon                                     4
oxamyl                                      7
pendimethalin                               3
phorate                                     7
phosalone                                   7
phosalone OA                                5
phosmet                                     4
phosmet-oa                                  5
prometon                                    4
propachlor                                  4
propham                                     4
propoxur                                    4
ronnel                                      4
siduron                                     4
sulprofos                                   4
tebuthiuron                                 4
trichloronate                               4
trifluralin                                 4