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<br />' NC&C - 1989 HYDROLOGY REPORT <br />' 2.0 HYDROLOGIC MONITORING <br />2.1 Data Collection <br />' Field and laboratory data were collected during the fall and winter <br /> quarters of 1989-90 s eason from the following monitoring sites: OW- <br />' 3L, 4L, 7, 8, 12, 13, and 14, as per the June 13, 1988 NCEC <br /> Technical Revision. Field and laboratory data were collected <br />' during the fall qua rter (annual sampling frequency), and field <br /> parameters collected during the winter quarter (quarterly sampling <br />' frequency). <br />Since the tunnels have remained sealed since 1986 and there has not <br />been any activity on the site during 1989, NCEC has remained on the <br />quarterly field parameters, annual lab analysis schedule through <br />' 1989. This schedule will be maintained until activity resumes at <br />the site. <br />' 2.2 Discussion of the Data <br />Data collected during the fall and winter quarters is consistent <br />with previously collected data for those monitoring sites listed <br />above. As previously recorded, wells OW-3L, 7, 12, and 13 remain <br />' dry. In addition, well OW-4 L, which has provided a considerably <br />long data record, was destroyed sometime prior to the fall sampling <br />' period. This will be discussed in more detail in Section 2.3. <br />' Hydrographs for OW-4L (period of record), 8, and 19 are included. <br />Water levels measured during the fall and winter quarters are <br />consistent with previous trends noted on the hydrographs. During <br />' Adrian Broe~n Consultants -3- Ref:1145/900131MG.HYD <br /> <br />