A R .O G 6 3 MICROBIOS MICROTOX TOXICITY TEST TEST SUBSTANCE______________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95 or as a component of FC-201AF. (1Octanesulfonic acid) (CAS # 2795-39-3).

A R A 2.6 - 085 ACUTE TO XIC ITY TO AQUATIC INVERTEBRATES (DAPHNIA MAGNA) TEST SUBSTANCE_______________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-603F. (1Octanesulfonic acid) (CAS # 2795-39-3).

ARA.G _ 0 0 5 ACUTE TOXICITY TO FISH (FATHEAD MINNOW) TEST SUBSTANCE Identity: A mixture containing perfluorooctanesulfonate, may also be referred to as PFOS, FC-95, or as a component of FC-3072. (1Octanesulfonic acid) (CAS # 2795-39-3).

Aft.1160521 ACUTE TOXICITY TO AQUATIC INVERTABRATES (DAPHNIA MAGNA) TEST SUBSTANCE________________________________________________ Identity: Perfluorooctanoic acid, ammonium salt; may also be referred to as PFOA ammonium salt, Ammonium perfluorooctanoate, PFO, FC116, FC-126, FC-169, FC-143 or as the major component of FC1015.

L a rry R .

ARXlCrOW THE SCIENCE OF ORGANIC FLUOROCHEMISTRY 3M February 5,1999 000002 The Science of Organic Fluorochemistry Introduction The science of fluorochemistry begins with fluorine.

AR226-2264 EID294840 Vapor Scavenging Coefflcent Liquid Precipitation = ______________________ Frozen Precipitation a C8 Particle Penalty *2 ,2 g/cm* Data Is based on tasting conducted atthe Washington W ort site In September, 1996.

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AR226-3074 gTliriv T i t l e Inhalation Toxicity Screen with T,n^r-a t-Qrv P ro ject-IB HL-1997-00599 author David P.

P-1 fH2^(o-3 m Du Pont de Nemours (Nederland) BV Dordrecht W orte To: C L.

_ 0751+ 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-203CE. (1Octanesulfonic acid) (CAS # 2795-39-3).

Medicine, Health Physics Industrial Hygiene, Toxicology 3M Medical Department 3M Center.

MEMORANDUM TO: John Kim FROM: Paul Merrell RE: Nevada Power v.

Telephone: (702) 385^202 BRADLEY & MERRELL c/o Jones, Jones, Close & Brown 300 South Fourth Street, Seventh Floor Las Vegas, Nevada 89101-6026 Fax: (702) 385-1655 July 23, 1993 VIA HAND DELIVERY Honorable Lawrence R.

Mi TO: FROM: RE: DATE: MEMORANDUM Messrs.