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Consequences section of the permit and should continue to meet water quality standards <br />in the future. The Phase II sediment control demonstrations have shown no impact for <br />these outfalls and should be evidence enough to demonstrate no long term effects on the <br />watershed. <br />Item #2 refers to permit page 4 -239a and a historic water sampling table. After further <br />review it appears that page was removed from the permit with PR -4 and is no longer <br />relevant. Please remove this page to update your copy of the permit as needed. <br />In response to items #3 and #4 page 4 -239 and 4-241a have been revised to reflect the <br />requested changes. <br />Item #5 refers to oil and grease sampling. Per our NPDES permit, oil and grease <br />sampling is contingent upon a quarterly visual inspection of the discharge and a positive <br />finding of oil and or grease. Oil and grease is not automatically sampled on a quarterly <br />basis as would be implied if it was included with the A -2 sampling suite list. Oil and <br />grease will be added as a separate action to table 4.8 -12. <br />In response to item #6 the special procedures were removed from the sampling <br />procedures due to an effort to simplify the process at outfall 011. For several years now <br />the outfall has been sampled at the Parshall flume that is considered the official discharge <br />point for the outfall. In the past a naturally occurring spring called East Pyeatt was <br />monitored on a weekly basis. This requirement was dropped several years ago. Now <br />observations and sampling at this outfall is only required when water is discharged from <br />the final impoundment, East Pyeatt #3. When observations are made, site parameters and <br />flow are taken at the discharge flume and a separate smaller flume for the spring. <br />However, surface water samples are taken at the final Parshall flume. It is unnecessary to <br />separately sample water from the pond spillway, when it is diluted by the spring before <br />leaving the official discharge point. The water discharging at this site is the final <br />discharge from this outfall and will be in compliance with our permit. In regards to all <br />outfalls, the water discharged at the final flumes will be the official discharge points and <br />sampled as such. <br />Enclosed are a revised table 4.8 -12 and pages 4 -239 and 4 -241a. <br />Please contact me if you have any questions regarding the enclosed information. <br />Sincerely, <br />Graham Roberts <br />Environmental Engineer <br />GCR [M /Permit Revisions /TR -110 Responsel CL.doc] <br />c File 109.2.3.4 w/o attachments <br />Revisions File <br />