PERMFILE67115 - Laserfiche WebLink

Home Browse Search

General Minimal Discharge Permit Rationale • Permit No. COG600000 Page IS V. TERMS AND CONDITIONS OF PERMIT D. Limits Determined by Best Professional Judgement 3. Bromine : (cont.) Based upon some previous tosiciry data, the recommendation made by EPA in the 1972 "Blue Book" (see Reference D) for bromine xns: 'It is recommended that free (molecular) bromine in the marine environment not escecd 0.1 mgR and that ionic bromine in the form of bromate be maintained below 100 mgR. " Thus. based upon the available taziciry information and the previous recommendation for bromine, the Division has derermincd by Belt Professional Judgement BPJJ that an instream level of 0.1 mg/1 for bromine is applicable. E. Discussion of Limitations: 7. mow: A flow limit rs included in the permit, due to the various limits being flow-based for some facilities. The flow limit used will be the 30 day average flow from the facility. See the individual Cetr~ation Rationale for the flow limit applicable to the individual facility. • 2. Sa ini Salinity, or total dissolved solids (IDS) is an issue in the Colorado River Basin. Regulation 3.10.0, "Regulations jot Implementation of the Colorado River Salinity Standards Through the Colorado Discharge Permit Program, " (Set Rcf. E) addresses the discharge of IDS to the Colorado River Basin. The regulation requires that the salinity of each discharge to the Colorado River Basin be evaluated for impact on the rystem. Since dischargrs from facilities are not judged to have a water quality impact, and these discharge are iraermitrent and infrequent, it has been derermincd that no sign~ant impacts due to IDS should occur on the Colorado River. No salinity or IDS monitoring will be included, however, the Division reserves the right to require monitoring for IDS. The Stare reserves the right to refltse the applicability under the general pmnit ojany discharge if it appears that rht discharge will nest be consistem with the regulation. •