RESPONDENT IS A CORPORATION ORGANIZED UNDER THE LAWS OF THE STATE OF NEW MEXICO WITH A PLACE OF BUSINESS LOCATED AT 1800 BISTI HIGHWAY, FARMINGTON, NEW MEXICO 87499. RESPONDENT OWNS AND OPERATES A SAND AND GRAVEL OPERATION. EPA ISSUED NPDES PERMIT NO. NM0027995 TO RESPONDENT ON JUL. 15, 1978. THE PERMIT AUTHORIZED THE RESPONDENT TO DISCHARGE POLLUTANTS FROM THE FACILITY INTO THE SAN JUAN RIVER, SUBJECT TO THE SPECIFIC TERMS AND LIMITATIONS OF THE PERMIT. DURING THE PERIOD FROM MAY 1990 TO SEPTEMBER 1993, THE RESPO NDENT FAILED TO MONITOR THE EFFLUENT FOR FLOW AND TSS. DURING THE PERIOD FROM MAY 1990 TO SEPTEMBER 1993, THE RE- SPONDENT FAILED TO SUBMIT A DMR AS REQUIRED BY THE PERMIT.