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i~ <br />77rerefore, if samples are to be fibered after they !rave been transported to a lab <br />jot analysis, a study should be conducted showing that ogitarion during <br />trm+sporration has a negligible effect on cyanide concentrations. /f dre lab <br />' receives the corvainer with sample to be analyzed for CN ~ that is not completely <br />fill (or nearly soJ, or whit/t bears indications of leakage during .rlripruent, that <br />sample shall be noted by the lab. If st~cient material remains to be smnplcd, <br />' that particular monitoring facility shall be re-sampled <br />RESPONSE: It is the intent in sampling to avoid unnecessary sample aeration. All bottles will <br />be filled with sample prior to capping to minimize any air in the bottle. <br />However, BMR filters samples prior to their delivery to the lab to remove the <br />' precipitated sulfides from the tailings samples. Therefore, while this results in <br />some unavoidable exposure to air, since these samples are filleted in the field, <br />this is a moot issue. <br />' 7. Page 8, Section 2.1.7. 1 believe the EPA method requires drat bottles be stored <br />"below" 4°C rather than at "approximately" 4 degrees. BMG should check this <br />' figure and respond accordingly. <br />RESPONSE: Section 2.1.6 of the Protocol Document states that samples will be maintained at <br />' 0° - 4°C. Reference to "approximately 4°C" in Section 2.1.7 will be changed <br />to read "at, or below, 4°C". <br />' 8. Page 13, Section 2.2.6. BMR or drird Harry smnplers should ntnlde provisions for <br />storing the bailers, depth measu»ng devices, and other smmpling equipment out <br />of the paths of materials that could po[entially contaminate the sampling <br />' materials. <br />RESPONSE: BMR agrees with this comment and this procedure for storing the sampling <br />' equipment is already in place. <br />9. Page 14, Section 2.2.7. For those tvells with a history of Ipw ro nil (laid <br />' produc[ion, the presence of airy fluid at all may be more intportam than [he acnml <br />content of the fluid or of the quality of the analysis, said gr+allty having been <br />' affected by nantral or casing comarninarvs in the well. In these cares, the <br />protocol should provide for collecting a sample prior to evaluating dre <br />productiveness of the well. <br />' 77re Division recannrerrds drat for ordinarily dry or low productivity collecting <br />points, if any fluid is available, a reasonable mnount of that fluid should first he <br />' taken, then the well should be purged according to dre provisions in this section. <br />If adequate sample is collected under dre more ideal, three-rblwne purging <br />' -9- <br /> <br /> <br />