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Part I Page li of 19 Permit No. CO-0027146 B. MONITORING REQUIRE"lENTS 7, WET Phase I TRE (continued) If toxicity disappears during the Phase I TRE, the permittee shall submit written no cificacion co chat effect to the Division. The Division may require the permictee co conduct accelerated testing co demonstrate the continued absence of toxicity. If, after completing any Division directed accelerated testing, no acute toxicity is found to exist, the permittee shall resume normal quarterly testing. 8. WET Phase II TRE A plan for a Phase II TRE shall be submitted (date of receipt) co the Division by the permictee within 60 days of the submission (dace of receipt) of the Phase I TRE Report. The Phase II TRE, as submitted to or revised by the Division, shall Se incorporated into the permit as a modified compliance schedule. The Phase II TRE plan shall include the scope, methods, procedures, reporting requirements, and schedules. A Phase II TRE may follow either of two. directions, as apprepriace: toxicant treatability studies, or toxicant/source identification and control studies. Toxicant treatability studies are designed to assess the feasibility of elimiracing WET via addition or modification of treatment processes at the wastewater treatment facility. Toxicant/source identification and control efforts are designed co identify toxicants, identify the so.:rces of coxicancs, and control whole effluent toxicity by eliminac`.ng the introduction of toxicants into the wastewater creatm.•~t fac:..`•~. Toxic~.t-: identification studies performed ev the c -'aitcz ~ '.1 ... ir. ,eneral accordance with accepted methods fcr Toxic."; ;dc:~_ .cation Frocedures and Toxicity Confirmation Procedures. ;he ?hare I TR°_ permi~ conditions may be amended, if so requested and just:fi_d by the permittee. The Phase II TRE report shall indicate .he results of the Phase II TRE study. If the Phase II TRE results in the identification of the coxicancs, the sources of coxicancs or treatment for elimination of the toxicant, the permittee shall submit for Division approval a control program co control WET within 60 days of submission (dare of receipt) of the Phase II TRE Report, and shall proceed co implement such plan within 7 days following receipt of written approval from the Division. If toxicity disappears during the Phase II TRE, the permictee shall submit written notification co Chac effect to the Division. The Division may require the permittee co conduce accelerated testing co demons crate the continued absence of toxicity. If, after completing any Division directed accelerated testing, no acute coxicicy is found co exist, the permictee shall resume normal quarterl/ testing.