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'71 it—",,MATITABLV NA 'Indian River County Landfill Indian River County County MIEMi b S �' a ,�`g Y .''i"? :a�`l'MF+F.3 - s,�h :.�.n s4+, p . +` :t'.+`.Pw'r.' �)' � `.K� : .e:t5��+" 'sY 5. The Department must be notified in writing at least fourteen (14) days prior to the installation and/or sampling of any monitoring well(s). GROUND WATER QUALITY MONITORING 6. The sixteen (16) ground water monitoring wells designated for water quality testing are listed on Attachment A and are shown on Attachment B. The wells and piezometers for water level measurements are shown on Attachment B. NOTE: Unless otherwise approved by the Department, wells with high turbidities must be remediated or reinstalled to reduce the turbidity value to less than 20 NTU's prior to sample collection. Should any ground water sample exhibit dissolved oxygen concentrations greater than 20% of oxygen saturation at the field measured temperature, the sampled well must be repurged then resampled as soon as an acceptable dissolved oxygen value has been attained unless it can be demonstrated that insitu ground water contains higher levels of dissolved oxygen. All water quality analyses will be performed on unfiltered samples unless approved by the Department. 7. Samples from the sixteen (16) ground water monitoring wells shall be collected semi-annually and analyzed as follows: pH (field), specific conductance (field), turbidity (field), dissolved oxygen (field), temperature (field), total ammonia as N, chlorides, iron, mercury, nitrate, sodium, total dissolved solids and the EPA 40 CFR, Part 258, Appendix I parameters. All analyses must use detection limits at or below state standards and/or minimum criteria for ground water quality; 8. Ground water levels in all wells, whether sampled or not, and all piezometers must be measured to the nearest 0.01 foot and reported semiannually unless required more frequently by permit condition. All water level measurements must be made within a one day period. These measurements must be referenced to the National Geodetic Vertical Datum of 1929 (NGVD). SURFACE WATER MONITORING 9. The The four(4) surface water sites included in this monitoring plan are S-9, S-12, S-13 and S-14. They are listed on Attachment A and shown.on Attachment B. 10.Samples from the four(4) surface water monitoring sites shall be collected semi-annually and analyzed as follows: dissolved oxygen (field), pH (field), specific conductance (field), -2- Tlf,150nAlriliVt:.TYVArsfr,t ;1:4A MIS 05/08/96 i�'�"A t7H774;7.