HYDRO25332

• Permit No: M1980244
• IBM Index Class Name: Hydrology
• Doc Date: 2/1/2003
• Doc Name: NPDES Permits
• From: CDOH & E
• To: DMG
• Media Type: D
• Archive: No

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(•Ut.ORa(10 DF.PdRT.t1F 4T OF'11ElrT!/. {{'rtrcr ¢rn/irp ('w»ml Unrs,on ~ ~ ~ ~-. ~•' '~ - ~ ~ ~ ~'
Rrtlionn/e - Pnge t 1. Pcrmi! No. ('o-IN)136JN - '
The linritatiorr fa• dissolved cadmium aml supper are lox•er thmr some effhterrt rrrorritori/rg recrtln summarized t/r Tah/e R!
that x•ere reported by theperraitree. For this reasotr, a corup/lance schederle is included in thepernrit to gis•e thepermittee
an opparnarity to assess their treatment svctenr:c capahility ofnreetiirg these Iimitrrtions. and design and constnrct nrlt(itional
treatment fircilities. if tlrev «re deemed necessary. TJre pe/`nrittee will be required to .cnbnrtt a Preli»:irrary Report f?r
February 1, 2004, detailing their plan fir bringing tl:e discharge into cunrpliance with the final limitations that heconre
~jfecth•e February 1,1006. During the period alluwrd far these act{vibes, the preuinrrs permit limitcrtiwes ai•e applicrthle rrs
nrr interim ltmitatiolr. Conrpliarrce schedule applies to outfall OOIA.
Required cfJluent mercury monitoring tests hare. not detected efjlaent mercury emicentrat{nor at 0? microgram per liter
detection limit. Until recently tlrcre lrar riol been an eJjectire rrrCthO[IJ!)T manitari/rg lOit'-IC't'E'1 nrC'retrYi' CW)Celr(rf!liOr1S 11r
eidrer the strenrn or the facilitt• eJjiueru. To determine u•lrether the rlisrhrrrge has rencrnmhle potential to carers nr
contribute to mr esceer/mu•e of tl:e water grmlit)• standard f[rr nrerc:rn'. CCd V tvil! he required to nrouitor rout( nrercru•t•
corrcerurntiorrs nt OOIA. -This ikua x•ill be user! to rleterznirre reasonable po~entinl arrd to assess the impact ofthe dicclurrge
on Cripple Creek, respect{rely. d comp/lance per{ud will he established, such that, frfter thepermit~e~ )ors olrtuirud Jour
snnrplec slunvurg rturr rletectnr belax• the standard x('0.0/ ug?, t/rc permitter x't// strhnrit rrn nrnerrrlnrerrt regrecct (br tlu•
rcnrnvul oJ•the urercrrry rriorrituring req«irement in the Jurm ojan reryrrect.
A cnnrparisou ~/the nritrimum meacrircd corxrerrrralions of?oiaf recuvernble iron. lead, and nu•kel ur Tirbte V-1 nuhcarr~~'
that there i.+' no rerrsorrablr potential Jor the dLee/rarge jronr OntJid! OOIA to euace ur corrtrihute to nu eaccredcnre of n x'«ter
qu«liq• .ernnrlard firr these prrrumc•terc. .tilonitorirr}; aril! he rlroppefl fran thc• permit (rrr iron. nickel. arrd lead hosed oa
e(Jhremc•uncentratiorrsnretarllbelox•theca!e•ulrrtedacsinrilativerupacint Altwritoringfbrnitratexil/bedroppe~lfivnr.thr
prnuit Ixrsed un the luck of art applic•ahlc touter ryualitl• stmtt/ord.
rf) Spccinl Notce .
For a'c'<rru/ panunctcr:c. the murlrtic«l metho[ls usrd irr the deJinidar ojeJjhrerrt limits [ur diJJerau dour !!rase used in rhe•
de/iuirlrnr n(!he r•orr•rspo»din~ streanrstarrrlard. For crrrnidc•, the .cta»dcrrd prr the receis•in,• strr«»r rs brrserl rq?nn '/ic•r"
ct•mr{rte c•anr~entrerticnrs'. Hnx•ever. there is ao aaa!}vicul procedure Jirr nreusurnrg dre eorrreuL'n/iorr of fire cr«nidr in n
cornpicrc•/JLren(. There/in•e•.dSTitl(.9nrerianrSocieh•fi,r Testing amlrLlateriids)mrrrlvlB•alprosedur~•D-q({74-tX)uillher[crd
to ureusure u~euk actrl diccac&rhlc e rauide irr t/re eyfluerrt. This arralvtic.•al pruee[hn•e will detec•tfrce• ei•mride plus drone Iur•m.c u!'
amrples e1'antde then rrre most remlili' eurn'erled to free crrutide•. •
Tl~c• culculntrd eJJlueut limitation of S pgR is less thmr lire CCcQ Y' :c demmnstruted rletcc•tion limit of 11{ pg~l. Tlu'reforr, rr
linritatia/t frmceak trc•id rl{scru{nhle c)'anide will be iperilied. and sci/! 6r set equal to the tletec•rion limit. Prarided wefrk «r~ir/
dissaciable c•rmride corrccrru'alirnu ore less than the nrethud r/etectiou limit of101rg/l, it sr ill he ass'tnned that t/re 5•pg:7frer
cyanide s/nudurtl i.c heirro uderytuth'!r protected
Asstated i» Regrdurion 61.8 (1) (GJ. Effluent maritoring to rletenrrirre c•arrrpliarur with metals lhnitatians based a» di.esnlved
nretulc standards shall ruiliae the putcrrtiullr dissoherl method. crccpt that if it eau be demm~rtruted tluu there is ua sturisticulk
.c{gaificunt rhlfcrencc at a OS percent rnrrfderur iruenal betx•ee/i pLtentirrlly d{ssnh~ed and tlissahrd ntethndnlogiec using
paired samples, the Division slur!! allow tJre use ufthe dissrilrei! anal}•tical rnethodoLr~ry (o zucrrs[tre contpli<rrrce with such
limaatiort~. '
CCc~ b' perfrmnrerl .crrrtirtical analrsec of the copper. lend, nickel, idtturinurrr, cadmium, nrangnnese, arrd z{ru• rl{.crolred uad
putentiallt•discolvcd drrur and demonstrated that the di ference henvrirr the h,•o methodologies was insignifrcurrt. mul tlrerefue
the ajn•erneridoned uteuds are listed ns <lissolved.
3. Antidegradution
Arequn Gulclr (Scgnrent 11u ofthe UpperArkmrsrts R{t•er)• is ctesigrurted 2c being "Use protected. " T/rercfare, jot this s'egmeru.
an urttirlegradrrtiorr revic'•v is trot regtr{re d prrrsrraut to, Section 31.F cfTlre Basic SI[nrdards' mrd .+~1et/tudolugics for Su/ fine R4rter
(S CCR 1001-31).
4. IVhnle F.JJlueru Tn.Cicili /11 ET) Test{ng
CCU >r' conducted 1Vhn/e F.fhuent Tactciry (°{VET' j tesfiag in /)16 to crceordonc•e with dre prrnrit nranitorirro requirenrcmts Jor
Outfrr11001.4. CC8{`stdmrinedr'eatltstothcDivision.tnrdsubcrquerrtlj•rrqueetrrl«x•ais•rr[j14ETtesting. TlreDicicronugrerd
with drat request mu! waived {VF, Ttesting rcgrirenrentr irr Metter da(edd/«t• 7, 19)8. Tltis' tc«iver xtts base[! ar the conrpletinrr of
rr Toririrv !dr/uifrau{on F, vrrhration (TIE) drat tlemousrrntcd drat high cnnccutratiorrs ofa/um{tram were respancihle fhrprerinus
1i'ET firilures. CC'R L' suhcequently conducted a L~4.4 to support changes to Arequrt Galch stream standards. The U:fA