**********************************************
       *** SURFACE WATER DATABASE SUMMARY DATA    ***
       **********************************************
             PESTICIDE SAMPLING AT SITE 13-5
       **********************************************
COUNTY: IMPERIAL
LOCATION: Alamo River downstream of Holtville Main Drain
MTRS: S14S15E18
lat/long:    32.9314 / -115.4564

PART I. PESTICIDES DETECTED AT SITE 13-5
******************************************************************
                                                  CONCENTRATION
 CHEMICAL                   SAMPLE DATE          [ug/L = ppb]
----------------------------------------------------------------
carbaryl                      09/27/93                 0.340
carbaryl                      10/18/93                 0.180
carbofuran                    04/26/93                 0.250
chlorpyrifos                  09/27/93                 0.110
chlorpyrifos                  11/29/93                 0.200
diazinon                      09/27/93                 0.490
diazinon                      10/18/93                 0.180
diazinon                      11/29/93                 0.420
diuron                        10/18/93                 0.400
endosulfan                    04/26/93                 0.020
endosulfan                    05/24/93                 0.105
endosulfan                    09/27/93                 0.059
endosulfan                    11/29/93                 0.026
endosulfan II                 04/26/93                 0.018
endosulfan II                 05/24/93                 0.060
endosulfan II                 07/26/93                 0.018
endosulfan II                 11/29/93                 0.016
endosulfan sulfate            04/26/93                 0.047
endosulfan sulfate            05/24/93                 0.092
endosulfan sulfate            07/26/93                 0.097
endosulfan sulfate            11/29/93                 0.039
linuron                       11/29/93                 0.310
malathion                     11/29/93                 0.061
methomyl                      04/26/93                 0.430
methomyl                      05/24/93                 0.190
methomyl                      09/27/93                 0.110
methomyl                      10/18/93                 0.470
methomyl                      11/29/93                 0.400
sulprofos                     11/29/93                 1.000


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