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** <br />If a visual sheen is detected a grab sample will be taken. <br />2012 MRP Well Pad discharge NOI — Supplemental Info.doc <br />11 <br />Discharge Flow Rates <br />The flow rate of produced water discharges may vary considerably from location to location but is anticipated to <br />average less than 500 gpm. The maximum flow rate will also vary and may reach 2,500 gpm. The <br />containment/infiltration ponds will be constructed with a design capacity of approximately 0.5 acre -feet. <br />Effluent Limitations, Monitoring and Reporting Frequency <br />The following water quality parameters, effluent limits, monitoring & reporting frequencies, and methods of <br />sampling & analysis will be adhered to for all discharges to be covered under this NOI: <br />Effluent Discharge Monitoring Sample Reporting Method of <br />Parameter Limitations Freauency Tyne Frequency Analysis <br />Flow, gpm Report Once per Instantaneous Quarterly Field <br />30 -day avg. discharge* or continuous ** measurement ** <br />& daily max. <br />TDS, mg /I Report Once per Grab Quarterly SM2540 -C or <br />daily max. discharge* equivalent <br />Oil and 10 * ** Once per Visual * ** Quarterly 1664 -A Gravimetric <br />grease, mg /I daily max. discharge* or equivalent <br />pH, su. 6.5 -9.0 Once per Grab Quarterly Field meter <br />(min. -max.) daily max. discharge* <br />* This monitoring frequency is based on discharges that are intermittent or temporary in nature. For discharges that are <br />not intermittent or temporary, a monitoring frequency that is appropriate for the type and duration of discharge will be <br />utilized. <br />Flow will be estimated using a recorder (e.g., Parshall flume, gauge) or determined from estimates based on <br />measurements of pump capacity or flow over timed intervals whichever represents existing conditions. <br />Supply Source of Hydrostatic Test Water <br />If hydrostatic testing is conducted, the water will either be potable or meet discharge requirements. <br />Time Schedule for Implementation <br />The plan for monitoring, treatment, and discharge of ground water produced during drilling, testing and <br />subsequent monitoring will be implemented immediately upon approval of this NOI. <br />