Document 5DM475e5XX1Qo0K0J2mvyGQre

-AU SLZ6 ~C>e77 ACTIVATED SLUDGE RESPIRATION INHIBITION TEST TEST SUBSTANCE___________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-783. (1Octanesulfonic acid) (CAS # 2795-39-3). Rem arks: The 3M production lot was not noted. The test sample is FC783 (cc784-1). Current information indicates it is a mixture of 1.0% PFOS, 2.0% Sultone foamer, 2.3% sodium octyl sulfate, 1.6% polyoxyethylene monooctylphenol ether, 0.1% sodium lauryl sulfate, 25.0% diethylene glycol monobutyl ether, 0.05% tolytriazole, and 67.95% water. The following summary applies to a mixture with Incompletely characterized concentrations o f impurities. Data may not accurately reflect the toxicity o f the fluorochemical component o f the test sample. M E T H O D _________________________________________________________ Method: Not given. T est type: Static acute GLP: No Year Com pleted: 1979 A nalytical m onitoring: Dissolved oxygen concentrations. Statistical m ethods: Results were determined by graphic interpolation. Test organism source: Activated sludge mixed liquor collected from the Metro Wastewater Treatment Plant, St. Paul, MN Test condition: Dilution w ater: Deionized water. Synthetic sew age: Not given. Reference and te st solution preparation: Not given. T est vessels: Not given. Num ber o f concentrations: one plus 4 blank controls. Tem perature: Not given. Total suspended solids and pH on day o f testing: Not given. Elem ent Basis: Respiration inhibition as determined by oxygen consumption. Rem arks: Study terminated at 7 minutes, since there was no indication of toxicity at the highest sample concentration. RESULTS_________________________________________________________ Nom inal concentrations: Blank controls and 1000 mg/L 002607 Elem ent values: No acute inhibitory effect on activated sludge respiration rate at 1000 mg/L with a contact time of 7 minutes. Element values based on nominal concentrations. Rem arks: Testing was conducted on a mixture as described in the Test Substance Remarks field. The values reported apply to that mixture and not the fluorochemical proportion alone. CONCLUSIONS_______________________________________________ ___ The FC-783 exhibited no inhibitory effect at 1000 mg/L over a 7 minute exposure. Subm itter: 3M Company, Environmental Laboratory, P.O. Box 33331, St. Paul, Minnesota, 55133 DATA QUALITY___________________________________________________ Reliability: Klimisch ranking 3. Study lacks description and records of the method followed. The inoculum is not properly characterized. Sample purity was not properly characterized and the study lacks analytical confirmation of the amount of fluorochemical proportion in the solution. REFERENCES____________________________________________________ This study was conducted by the 3M Company, Environmental Laboratory, St Paul, MN, Lab Request number 4896S, 1979. OTHER_________ ;_________________________________________________ Last changed: 6/26/00 002608 002609 NO. 3 4 0 - t o1 0 O ltT Z Q C N X 10 PtR Q*APH INCH PARC* OICTKKIMMM OMOIMk *O.*I.U T IQ N DISSOLVED OXYGEN CONCENTRATION - mg/? N> vn a* oo 4\ u>