# regon

Theodore Kulongoski, Governor

CERTIFIED MAIL RETURN RECEIPT REQUESTED

" May 31, 2005

Mark Stuntebeck, Asst. Manager Klamath Irrigation District 6640 K.I.D. Lane Klamath Falls, OR 97603 

### Department of Environmental Quality Eastern Region Bend Office 2146 NE 4th

, Suite 104 Bend, OR 97701 (541) 388-6146 FAX (541) 388-8283 

# DEQ
IJUN 

## 07 

## 2005

Re: NPDES Permit No. 102541 Modification File No. 111807 EPA No. ORR0041653 Klamath County We have completed the permit modification process for your National Pollutant Discharge Elimination system (NPDES) Permit No. 102541. The enclosed modification has been issued and replaces the entire language in NPDES Permit No. 102541. You are urged to carefully read the permit and take all possible steps to comply with the conditions established to help protect Oregon's environment against pollution. If you are dissatisfied with the, conditions or limitations ofthis permit, you have 20 days to request a hearing before the Environmental Quality Commission or its authorized representative. Any such request shall be made in writing to the Director and shall clearly state the grounds for the request.
Should you have questions, please contact me in the Eastern Region - Bend office at (541) 388-6146, extension 251.

# ~/Vl-

# RiChardJ~ Water Quality Manager Eastern Region, Bend RJN:jmr Enclosure cc: Environmental Protection Agency, Region X Ranei Nomura, Water Quality Division, DEQ

### ExpirationDate: June 30, 2007 Permit Number: 102541 File Number: 111807 Page 1 of 18
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM WASTE DISCHARGE PERMIT 

### Oregon Department of Environmental Quality EasternRegion 2146 NE 4th

, 

### #104, Bend, OR 97701 Telephone: (541) 388-6146 Issuedpursuant to ORS 468B.OSO 

### and the Federal Clean WaterAct

ISSUED TO:

'\ SOURCES COVERED BY TInS PERMIT:


### Klamath Irrigation. District 6640 

### KID Lane Klamath Falls, Oregon 97603 Type of Waste Acrolein-based herbicide residuals ' Outfall Multiple locations

PLANT TYPE AND LOCATION: 

### Irrigation System KlamathFalls, Oregon RECEIVING SYSTEM INFORMATION: 

### Basin: Klamath 

### Sub-Basiri: Lost River Stream: 

### LostRiver Hydro Code: 43E-LOST County: Klamath
EPA Reference No.: OR0041653 Issued in 

### responseto ApplicationNo. 985872received March 28, 2002,comp1eted April 15,2002. 

### This permit 

### is issued

# 0 1an4 use findings 

## ill thopermitrecord, July 15,2002 

# f/ 

# (/0---**#;mwo.::::di~fi~edl;!... ~Mt,lila:.L.y",,3~1.U!2i:.ll!0~05,,-**  _ Dick Nic 018, W, 

### ter Quality Manager Date EasternRegie - Bend

, PERMITTED ACTIVITmS 

### Until this permit expires or is modifiedor revoked-thepermittee 

### is authorizedto discharge acrolein-based herbicide residuals in conformance with 

### all the 'requirements, limitations, and conditions set forth in the attached schedules as follows:
Schedule A - WasteDischarge Limitations.Required 

### Management Practices,Public Notice Requirements, and Required Management Practices to ReduceMonitoring ScheduleB- MinimumMonitoringand Reporting Requirements ScheduleC - ComplianceConditionsand Schedules ScheduleD - Special Conditions ScheduleE - Not Applicable (reservedfor pretreatmentprogramsat POTWs). ScheduleF - General Conditions .

. 2 6 8 9
11 

### Unless specificallyauthorizedby this permit,by anotherNPDES or WPCFpermit, or by Oregon Administrative Rule, any other direct or indirect discharge to waters ofthe state is prohibited, including discharge to an underground injection control system.

# ..
Expiration Date: June 30, 2007**Permit~umber:** 102541 File Number: 111807 Page 2 of 18



### •.••
.....**SqIIED~EA** 

### ..'

. . 1

. .'. , 

### WASTE DISCHARGE**LIMIT:ATIONs'.REQ~D** 

### MANAGEMENT PRACTICES, PUBLIC NOTICE REQUIREMENTS, AND REQUIRED MANAGEMENT**PRACTICESTQJlE,DUC~.MONITOR1NG**

1. Waste Discharge Limitations



### a.



### b.

c. 

### d. Discharge limitation to natural. waters not to .1)e. exeeeded:

acrolein

The points of compliance with thislirnitation are at monitoring points that represent water exiting the irrigation system and entering natural waters. Irrigation water

### isnolongercoh~ideied treated if the discharge limitation is met. Except as provided for in Oregon Adininistrative Rule (OAR) 340-045-0080, 

## TI? aeroleinbased herbicide residuals may be discharged that violate Water Quality Standards as adopted in OAR 340-041-0185.
2. Required Management Practices'

"
a. Applicatio)J into Irrigation SysteDls The permittee may only apply acrolein-based herbicide into the treattnent area of the irrigation system.• Acrolein;.based herbicide may not be applied to natural waters and 

### may not be applied upstream orany delivery point for water - used for potable purposes.
b.

. Additional Requirements i) The Department recognizes that application of acrolein-based herbicide in the permittee's district is covered by**biolo~c~l** opinions (130s) issued by the United States Fish and**WildlifeSeMce~SF;W$),uitder** the £ndangered Species Act. These include BQsdated**Feb~** 9, 1995andJi'ebruary2, 19?6. The.lJSFWS has.. e.stablished reas9nable.!1l1d prudentnwasuresthll;tm,ust pe.followed by the permittee and also specifically allowed incidental take of lIsted species

.. The issuan.ce ofthis permit does not authorize any activities inconsistent with the BOs. In the event the applicable**~Qsare** revised. or replaced,**theDep~ent Ie,~el"'es**  the right to reopen 

### the permit, ii) Compliance with this permit 

### is llotintendedto**r~l~yeJ1l,eperrnittee** from compliance with other federal and state requ,ire:rnents,**su,ch.~FIFMrequirements** or Oregon Department of Agriculture applicator licensing 

### requirements,

c. Acrolein-based Herbicide Usage In order to reduce the totalamount of acrolein-based herbicide applied into the irrigation system, the permittee may only apply acrolein-based herbicide when the

.. size of.pcndweed.or othe,r aquatic plants have reached 

## an average length of 3.to 6 inches.or floating or non-floating masses of algae are visible. The permittee 

### maY not treat the entire irrigation district at one time,

DEQIWQ/SWM-RN-00465.doc (5/05)



# ,-----------.-------------------------------------" Expiration Date: June 30, 2007 Permit Number: 102541 File Number: 111807 Page 3 of 18

d. InspectlQB and Repair o(Gates Prior to the .applic;ati()p season or each application, the permittee must assure that all gates in thetreatment area are in working order. The permittee must document this inspection and any repairs in an inspection log.

, e. Licensed Applicator .The permittee must ensure tha;**~1l** acrolein-based herbicide applications be performed by a licensed**llPpJiAA~or** whq is familiar with the application requirements and risks for acrolein-besedherbicide,
f. Application Log The .permittee must maintain a 

### 108 for each.acrolein

.. based herbicide application with the follq\ving witlimum'information: i) Date of application

.. ii) Location ofllPplicatio ll iii) Name of applicator iv) List ofgates in ,treatment area**~t** discharge to natural waters v) The time of.geteclosure andreoPtming.including flow l11ellsurements or calculations used to determine**whentrea~d~aterhas** been/replaced by fresh. water .vi) Application· details (e.g., water temperature, total flow"**~imeapplication** started and stopped, gallons acrolein

.. based herbicide applied, dosage rate, concentration, application rate, orifice size, and nitrogen pressure) vii) Description of**treatmentar~a** . viii) Expected duration 'oK the .treatment period

g. . Water Users When requested to do so in writing by a water user, the permittee must stop water deliveries during acrolein

.. based herbicide application to**~t** user.
h. Access to Application**Schedul~** 11le permittee. must prQvi4e aphone number that' illterested persons may 9.al1 to. get more jpformation fr()1ll tPe,.permittee. The permittee must provide the caller with its most current application schedule; the schedule may be subject to change. i, Targeting**WaterUs~ ~te**  J)uriJlg Treatments The permittee must reduce water flow to the extentreasqpllbly practicable in the.treatment area tOJ:)1atch the target rate for water use during 

### the treatment period, j. Gate Closure Glltes that discharge to**na~al** waters must be closed and locked before the**acro~ein** .. based herbicide treated**wave.,r~ches** the gate and must not be reopened until the treated waVe.haspassed the gate or the FlFRA holding time requirement is met. When determining movement of the treated wave, the permittee must consider the volume and velocityof flow in the treatment area and the distance' between. the pqipt acrolein-based herbicide is applied and the gate to be closed or reopened.
3. Public Notice Requirements
a. Notice .,r'Intended Use For every calendar year, prior to the permittee's first application of acrolein

... based herbicide, 

### the-permittee must notify: i) Each water USeI" within its district by general newsletter, special notice enclosed with a regular assessment, individual letter or publicationin one or more newspapers with
a combined circulation area encompassing the area in which the irrigation system is located, and

DEQIWQ/SWM-RN-00465.doc (5105)

### Expiration Date: June 30,2007 Permit Number: 102541 File Number: 111807 Page 4 of 18 ii) The general public in the area servedby the permittee's systemby publication in one or morenewspaperswith acombinedcircutation 

# area encompassmg the areain which the**irrlgations~sfem** 

### is**loc~ted.'** 

### ' "

", b. Requirements for Notice 

### .The**p~rmittee** 

### must include the. following in the notice: i)' A 

### statement of the'permittee's intentto**usea~rolein"hased'herbicide,purpose** 

### of use, general**descriptionofWh~e** 

### it will be used, genetal time period ofexpected use, and any wateruse restrictions Or precautions during treatinent. ii) A phone numberthat**intereste~** 

### personsmay call to.get more infm:mation fromthe permittee.'The permittee must providethe**c~11erwithitsmostcurrmtapplication** 

### schedule and let thecaller'knowif the 'schedule' is 'subjectto change

.. Hi) A statement indicatingthat the wateruser mayrequest in Writing that water deliveries during acrolein-based herbicide application 

### be stopped.

c. Additional Notice to Water Users 

### with Dairy**ADi~als** 

### The permittee 

### mustprovide reasonablyadequatenotioeprior to acrolein·herbicidellpplication towater users with dairy animals. The purpose ofthis .notice is to Prevent

### dairy animalsfrom drinkingtreated water and to allow waterusers with dairy animals sufficienttime torriove their animals away from treatedareas.
4. Required Management Practices to Reduce MOnittiHng 

### To qualifyfor the reduced monitoring scheduleallowed in Schedule B.l.b, the permitteemust manageits gates that dischargeto natural waters in the following manner:

a. Gate Closure 

### The permittee must: i)

H) Close and Lock 

### Close and lock each gate withinthe treatmentarea that discharges to natural waters at least 

### two hours' 

### befbre**'theact()leih~based** 

### herbicidewave is expected toreachthafgate.' FOr any latetal**c~nal'thatdischargesto** 

### natural waters, eithetthe point of discharge' 

# to natural waters must be closed and'lockedor the turnoutto the lateral canal fromthe main canalmust be closed alldlocked. (1) In 

### makingthis calculation, .the permitteemust considerthe

.. volume and velocity offlow in the treatmentarea and; the diStiiri6e between the poiht acrolein-based herbicide is applied and the gate to 

### be closed. 'The fastestvelocity of flow, as averaged throughthe verticalwater column, in. 

## a representative cross-section of the channelmust be used. When channel configurations vary, calculations may he made On different sections ofthe treatlnent area to determine the time when the abrolein

.. based herbicide.wave is'expectedto reach the 

### gate. (2) 

### These calculations must be documented in the 

### application log; Tag Gates 

### Attach 

### an easilyvisible 

### tag to water USer deliverypoint that cannotbe locked. The tag must state that the deliverypoint has been closed at the request of the wateruser and may be reopenedonlyby the permittee's personnel.
b. Inspection Requirements 

### Duringthe period whenacrolein

..based herbicide levels in the irrigation systemare likely to be above the discharge limitatiOll,thepentlitteemust inspect wateruser delivery points that cannot be 

### locked at least once a day that havebeen closedas requested by the water user. '

DEQ/WQ/SWM-RN-00465.doc (5/05)" Expiration Date: June 30, 2007 Permit Number: 102541 File Number: 111807 Page 5 of 18

c. Reopening of Gates The permittee may only reopen gates when acrolein-based herbicide is
no longer present at Jevelsabove its discharge ,limitation;. This determination may be made using on of the following: i) The permittee waits for expiration ofthe holding period as specified in the EPAapproved FIFRA label for the acrolein-based herbicide; or ii)The 

### permittee calculates the rate at which 

### the. volume of water. 

## in tbe'. treatment area is replaced by fresh, untreated water based on the portion ofthe treatment area where such turnover is the slowest (the**slowc;~t veloci~**  of 

### flow, asaveraged through the vertical water column, in a representative cross-section oftlie channel must be used). The permittee may not open the gato{s) until the water in fuetreatme,nt area has turned over at least one time. (1) The permittee may calculate turnover rates for individual laterals that are fed from the main canal and open gates 

### in**~se** latera)s,if**~e** volume ofwater in the lateral has turned over at least Ol)e time

...Fore,xample,a lateralcloser to the acrolein-based herbicide application point may turnover more quickly than the main canal or a lateral located**fartheJ\~'V~Y** fi;ODl the**app1ic;a~iOD,point.**

... (2) In making this ca.1culati6tl, the permittee must consider the.di,Uu}cebetween the point acrolein-based herbicide is applied and the gate farthest from the applicationpoint 

### 19.**bereop~d.** Whenchannclc01'lfiguratiops vary,**calcul~~9nS** maYRe 

### made .9U**diffet'~t** sections of

### the treatment area to determine turnover time for the treatment area. (3) The permittee must also use the field te,st1cit for acrolein-based herbicide to determine when to begin the turnover period. The, turnover period may not begin until acrolein-based herbicide is no longer detected at the gate to be reopened farthest from the application point. (4). These.C!ilctUIlPons and**Jl1easure~ents:mus~be~,f.'\Jl,lle,tlte4 hl~e**  application log.

DEQIWQ/SWM-RN-00465.doc (5/05)r I**~~** -**--~--- ---------------------~**  Expiration Date: June 30, 2007 Permit Number: 102541 File Number: 111807 Page 6 of 18
SCHEDULEB MINIM'UMMONITORING AND REPORTING REQUIREMENTS



### I. Monitoring Requirements The permitte'e 

## must monitotrscrolein-based herbicide application activities allowed by this permit as follows.

""(Acrolein testing may follow the procedures'11140 

### CFR § 136&' Solid Waste Method 8260.)

a) Discharges to natural waters 

### ifgates tb natural waters in the treatme11t area are not managed as described in Schedule A,4


### Gates that are not closed at least two hours before the'aereleln-based herbicide treated wave is exected'to reachtheatri:



## once'per treatment (irmnediately befotecl'O'$ing the gate)



### Reo ened'ates'before one full turnover tiDleorfresh water has assed:

Acrolein Where the discharge from the gate enters natural 

### waters-or at the

ate Where the discharge from the 'gate enters natural waters or at the gate Twice per treatment first open gate

Twice per treatment for the first open gate; or When multiple treatments are made in areas ofthe irrigation system that flow to a common drain, once a week (twice per treatment I for the first open gate) for the treatment area that is nearest to discharging to natural waters lug/l grab

I At the same monitoring location, within 10 minutes of opening the gate and 60 minutes after

opening the gate.

DEQ/WQ/SWM-RN-00465.doc (5/05)Expiration Date: June 30, 2007 Permit Number: 102541 File Number: 111807 Page 7 of 18

b) Discharges to natural waters (after gates to natural waters .have been opened) provided the gates in the treatment area are managed as described in Schedule A.4 to prevent acrolein-based herbicide from discharging to natural waters:



### Where the discharge from the gate enters natural waters 

### or.at the gate Onee a**w~ek** On the

.. treatment 

### that is nearest to discharging to natural waters. Monitoring must be performed on the dispharge 

### from the.**r~()pw-~d** gate that is nearest to natural waters within 10 minutes of 

### o enin the teo

c) Discharges to natural waters where the treated water**lu:\~been** held in a detention basin for the requisite holding time required by FIFRA.labeling:

Acrolein Where the discharge from the gate enters natural waters or at the ate Once on the first discharge of the season within 10 minutes of opening the gate Grab

2. Reporting Requirements a) Monitoring Data Monitoring results must be reported on approved forms. The reporting period is the calendar month. Reports must be submitted to the Department's Eastern Region

- Bend office by the 15th day ofthe following month and contain the information required by ScheduleF, Section C, Condition 9. If the permittee uses an analytical laboratory with an acrolein reporting level that is higher than the method detection level, the permittee must request that the laboratory also provide the detection result. b) AnnualReport The permittee must submit an annual report to the Department's Eastern Region

- Bend office by December 31 of each year of the total amount of acrolein-based herbicide applied during the calendar year, name of aquatic herbicide, EPA Registration Number, and formulation information. In lieu of an annual report, the permittee may submit this information on a monthly basis with its monitoring data.

DEQIWQ/SWM-RN-00465.doc (5/05)Expiration Date: June 30, 2007 Permit Number: 102541 File Number: 111807 Page 

### 8 of 18
SCHEDULEC COMPLIANCE CONDITIONS AND SCHEDULES

1. Written Contingen.cy 

### Plan. Prior to the first application ofacrolein-based herbicide, the permittee must submit its Written contingency plan required 

### by Schedule D.2 to the Department's Eastern 'Region**"':B~d** office for**r~yiewand** aPPli9vaJ. Updates ttfthe plan: 

## are notrequired 

# to be submitted.

" 

### 2. Integrated Aquatic'Vegetation Management 

### Plan Within 180 days ofpermit issuance, the permittee must submit its updated Integrated Aquatic Vegemtion Management plan (or Integrated Pest Management plan that addresses aquatic vegetation)required oY,Schedule D.3 to the

.. Department's Eastern Region-Bend office for review and approval.
3.

. Evaluation of Fish Screening Efforts Within 360 days ofpermit issuance, the permittee must submit its evaluation report required by Sohedtile D.4 to the Department's Eastern Region - Bend office. 4. The permittee is expected to meet the compliance dates that have been established 

### in this schedule. Either prior to or no later than 14 days following any lapsed compliance date, the permittee must

. submit to the Department a notice ofcompliance or noncompliance with the established schedule. The Director may,revise a sohedule of ootnpliance ifhe detennines good 

### llrid valid cause resulting from events over which the permittee has little or no control.

DEQIWQ/SWM-RN-00465.doc (5105)

# . • r Expiration Date: June 30, 2007**Permit~umber:** 102541 File Number: 111807 Page 9 of 18
SCHEDULED SPECIAJ,.**CONDIT~()NS** 1. Re.cord KeepbJ,g The permittee must.record and maintain the following information and provide it to the Department uponrequest: a) Inspection and repair results as required in Schedule A.2.d.

.b) Application logs as**req~JrePi** 

### in Schedule A.2.r. c) Copy of the publicnotiGe required 

## ill Schedule A.3.a; and b.
2. Written Contingency Plan a) The permittee must have an approved written contingency plan for the prevention.coatainment, ", and handling of spills and unplanned**di~harg~sfr9m** the applicp,ti9n. st9ra.ae and transportation of acrolein-based herbicide in force at.all.times.. At .a.rninim\U1l. the contingency plan must contain the following: i) Description of enw10yee ,9riel)tation and ed",cation program. ii) Descriptiopofthe repQrtingsYstemthat will.be. used tp notifyresPQnsible managers and legal authorities in the event of an acrolein-based herbicide spill. iii) Procedures that will be takeJ;1to**prevent,containorcle~** up.spills of acrolein-based herbicide

.. iv) Emergency phone numbers for the**~anment** and Oregon Ernergency.Management Divjsion, v) Name and telephone number of a 

### hazardous material reSPQn$e contractor. vi) Name, address, and telephone numbers ofnearest hospitals to the permittee. b) The permittee must also: i) Ensure that the licensed applicator has a copy ofthe contingency plan on site during application of acrolein. ii) Maintain a continuing program of employee orientation and education to ensure awareness ofthe necessity for proper action in the event of a spill or accident. iii) Report all spills exceeding the reportable quantity of OAR 340-108-0010 to the Oregon Emergency Management Division. iv) Update the plan as needed.
3. Integrated Aquatic Vegetation Management Plan The permittee must update and implement its integrated aquatic vegetation management plan (or integrated pest management plan that addresses aquatic vegetation) to examine the possibility of alternatives to reduce the need for aquatic herbicides. In updating its plan, the permittee must ensure that: a) Herbicides are used only after the assessment of all available control technologies. b) Site-specific action thresholds for aquatic plant removal are determined. c) The least amount ofthe herbicide needed to effectively control the aquatic weeds is added to the irrigation system. d) The latest chemical control technologies are considered and used. e) An evaluation of the infrastructure to identify changes that could be made to reduce growth of aquatic vegetation is performed. f) A schedule for implementing the plan is developed ifnecessary.

DEQIWQ/SWM-RN-00465.doc (5/05)Expiration Date: June 30, 2007**Permit~umber:** 102541 File Number: 111807 Page 10 of 18

4. Evaluation of Fish Screening EtTotts" 'The**p~rinttteemust** evaluate fish screening practices in areas of the irrigation system where acrolein-based herbicide applications are made to determine if any adaitionalpraeticesate needed to make fish scteeningrriore effective. A schedule for implementing these practices must also be included. '
5. Notification to Department Thepermittee mustl10tify the' Departrnent'sEastern Region - Bend office at (541) 388-6146 in accordance with the response times contained in Schedule F of this permit of any malfunction so that corrective action can be coordinated between the permittee and the Department.
6. Definitions a) Herbicide Residuals means the aquatic herbicide or by

.. productresulting from the application of aquatic hetbicidethat is found outside of the treatment area' 

### Or persist after the Specified treatmentperiod. b) Irrigation System means acontrollea systel11consistlng primarilyofmanrimde canals, ditches and ponds designed and operated for the delivery or management 'ofwater for irrigation purposes. c) Natural Waters means siirface waters outside**oftheirrlgationsyst~.'** d) Treatment Area means the area, as defined by the permittee, ofthe irrigation system in which aquatic herbicide will be applied to control weeds:

. e) Treatment Period means the time, as estimated by the permittee, during wbich the aquatic herbicide is applied and, eontrollingweeda within the trtatrnentat$.

DEQ/WQ/SWM-RN-00465.doc (5/05)• 

### • Expiration Date: June 30, 2007 PermitNumber: 102541 File Number: 111807 Page 11 of 18
SCBEDULEF NPDES GENE:RALCONDITIONS
SECDON 

### Ae STANPARPCONDJTIONS
1. 

### Dutyto Cgpmly The permittee must comply with all conditions of this permit. Any permitnoncompliance constitutes a violation of Oregon Revised Statutes (PRS)**~8B.02S** 

### and i, gt'01#11AS 

### for**enforcementa~tion;** 

### foq)ermit termination, suspension, or modification; "or for denial of a permitrenewal application.
2. fena1tisi fQr 

## Ww Pgl1ygQ1l iljld Pmt&;gpdigon VicWUigns

" OregonLaw (ORS468,140)**a11qwsth~ l)irerctot:toimposec~vi1.pep.a1tiesup**  

### to**$lO,OOO~** 

### dayfor violation ofa

term, condition,**orreq~irernen!ofaperrnit~** 

### .. , In 

### aadition,.a person 

### who unlawfully**pqllu~s** 

### water

# as specified in ORS468.943 orORS 468.946 is subject

### to criminal prosecution. 3. Dutyto Mitigate The permittee shalJ**,~.** 

### all reasonable**.s~s** 

### to minimize**or~vent** 

### anydisqharge or sludge 

## use Or disposal in violation of**thi~** 

### perrnit':Vhichhas a 

### r,easonapJe lilFeliho04 of**adv~ely** 

### affectinghHOl8Jl.healthOf the environment.**,~,addition,** 

### uponrequestof the pepl¢ment, thepernriuee shall c9{l"ectap,y,lildvemeiIwact on ,the 

### environment or human healthresulti1'l8fi;om**n~liance** )Vith 

### this. 

### permit, in(;luding;**suoh~celeIllted** 

## or additional 'Jillonitoring as 

### necessary 

### to.determine. thena,ture**andimp~t** 

### of

.. noncon,tPlyingdiscParge. 4. Dutyto Reapply If 

### the permittee wishes to continue an activity regulated by thispermitafterthe expiration date of this permit, the permittee mustapplyfor andhavethe permitrenewed.' The application shallbe submitted at**J~ast** 

### ·180 daysbefore the expiration dateof 

### this pennit.
The Director may grantperrnis$!on tpsubmit application lessthan ,180**,~ys** 

### in advance but no later than 

### the permitexpiration date.
5. PermitActions This pennitmay 

### be .1JloAified, susPCiI1QeQ, revoked and reissued, orten1linated, for**cau~** 

### including, but not limited to, the following: a.**Violatiollof~yterm,condition,** 

### o,r**r~q~ement** 

### of this permit, a@le, or 

### a statute; b. Qbtain,ing this permit. by**mi~epre~tation** 

### or4ilure 

### to**disc;lo~** 

### fullyaj1 material facts; or c. A change in any condition that requires eithera temporary Or permanent reduction or elimination of the authorized discharge.
The filing ofa request by 

### the permittee for a permitrnodificationora no«fication of

### planned changes or anticipated 

### noncompliance, doesnot stayanypermit condition.
6. Toxic follutanW The permittee shall comply with. any applicable effluel1t standards or prohibitions established under Section 307(a) of

### theCleanWater.Act fortoxic pollutants 

### withinthe time**provid.edin~regulations** 

### that establish those standards or prohibitions, evenif thepermithasnot yet been modified to inCOrPorate the requirement.

7. 

### Property Rights DEQ/WQ/SWM-RN-00465.doc (5/05)

### Expiration Date: June 30, 2007**Permit~urnber:** 

### 102541 File Number: 111807 Page 12 of 18
The issuance of thispermitdoesnot convey any propertyri$hts of any sort,or any exclusive privilege.

, '

. ,.r**~"** >" .' 

### 8. Pennit References Exceptfor effluent standards or prohibitions established under Section 3d1(a) 

### of the Clean WaterAct for toxic pollutants and standards for sewage sludge use or disposal established under Section 405(d)of the CleanWaterAct, all rules and statutes referred to in thispermitarethosein effecton the date. this

### permit is issued.


### SECTIONB. OPERATlONANllMAINTENANCE OFfOLLtmON 

## coN'tRots 1. ProperOperation and Maintenance

»r 

### The permittee shall ata11 times properly operate andmaintainall facilines and systems oftreatmentand control (and

"related appurtenanCes) whichare instidledoruse<i by the permittee to achieve compliance with the conditions of

this permit. Properoperation and maintenance also includes adequate ,laboratory controls, and iq;prOpriate quality assurance procedures. This provision requires**th~ operatio~**  

### of'back-up or auxiliary facilities or similar systems whichare installed 

## bY a permittee only when the operation is tleeessaryto achieve compliance with the conditions of the permit.
2. Duty 

### to Haltor Reduce Activity For industrial orcOtnn1ercial facilities, uponreduction, loss, orfailureofthe'tteatment facility, 

### the pennittee shall, to the extentnecessary to 

### maintain Compliance ,with its. 

### permit, controlprbducti

# on ot 

### all discharges or'both untilthe facility is restored or an altetlllltivemeiliod of treatment is provided.' This requitementapplies, for example, when the primary source' of 

### pOWer' of the treatment facility 'failsor is reduCed' otlost. 'ItshaU not be a defense'for a permittee in an enforcement action thatit would**haveb~** 

### necesSary to halt or reduce thepemutted activity in order to maintain compliance withthe conditions of this permit.


### 3. Bypass ofTreatmentFaoiIities a. Definitions (1) 

### "Bypass" means intentional diversion ofwaste streams.from any portionofthe treatmentfacility. The term "bypass" doesnot include nonuseof singular or multiple units 

### or processes of a treatment works whenthe nonuseis insignificant 

### to 

## the quality artdIor quaIrtityoftheeffiuent produced by the treatment works. The term "bypass" doesnot applyif the diversion doesnot cause effluent limitations to be exceeded, provided the diversion is to allow essential maintenance to assure efficient operation. (2) "Severe pfuperty 

### damage" means substantial physical damage to 

### property, damage to the-treatment facilities or treatment processes whichcausesthemto become inoperable, or substantial and perrnanent loss Ofnatural resourceswhiohcan reasonably be 

### expected to 

### occUr in the absence of a bypass. Severeproperly damage does not

# mean' economic 

# loss caused by delays in production.
b. Prohibition of bypass. (1) Bypass is prohibited unless: (a) Bypass was necessary to preventloss oflife, personal injury, or severepropertydamage; (b) 

### Therewereno feasible alternatives to the bypass, stich as the 

### use of auxiliary treatment facilities, retention of untreated wastes, or maintenance during normal periodsof equipment downtime. This condition is not satisfied if adequate backupequipttlent should havebeen installed in the exercise of reasonable**en~neeringjudgemerltto** 

### prevent a bypass whichoccurred during normalperiods of'equipment dOWntimeorpreventlitwe' maintenance; and (c) The permittee submitted noticesand requests as required under General Condition B.3.c.

DEQIWQ/SWM-RN-00465.doc (5/05)Expiration Date: June 30, 2007**Pennit~umber:** 102541 File Number: 111807 Page 13 of 18 (2) The Directormay approvean anticipated bypass, after considering its adverseeffects and any alternatives to**byp~~ing,** when 

### the. Director determines that 

### it.willmeet the three conditions listed above in GeneralConditionB.3.b.(I). c. Notice and request for bypass. (1) 

### Anticipated bypass. lfthe.perrnitteeknows in 

### advanceofthe needfor a bypass, it shall submitprior writtennotice, ifpossibleat least ten days before the date of the bypass. (2)

. Unanticipated bypass, The 

### permittee shall submit notice of an unanticipated bypass as requiredin General ConditionD.5. 

### 4. Upset

" a.



### b.

c.



### d. Definition. "Upset"means an exceptional incidentin which there is unintentional and temporary noncoJ;llPliancelv,itll technologybasedpermit**efflUCJlt~imitationsbecaHSe** offactorsbeyond the reasonable controlof the permittee. An upset does not include noncompliance to the extent causedby operationerror, improperly designedtreatment facilities, inadequate treatment facilities, lack ofpreventativemaintenance, or carelessor improperoperation, Effectofan upset. An upset constitutesan affirmative defenseto an action brought for noncompliance with such .teclmology based permit effluentlimitations ifthe requirementsof

### General Coqdition B.4.c are met. No determination made during administrative review ofclaims that noncompliance was causedby upset, and before an action for noncompliance, is finaladrninistrativeactionsubjectto judicial review. Conditions necessaryfor a demonstration ofupset. A permittee who wishes to establish the affirmative defense of upset shall demonstrate,throughproperlysigned, contemporaneous operatinglogs, 

### orother relevantevidencethat: (1) An upset occurred and that the permittee can identifythe causes(s) of 

### tile upset; (2) The permitted facilitywas at the time being-properly operated; (3) The permittee submittednotice ofthe upset as required in General ConditionD.5,hereof(24-hour notice);and (4) The permittee compliedwith any remedial measures· required**und~** GeneralCondition A.3 hereof. Burde,n of proof. In any enforcementproceedingthe permitteeseeking**toes~lish** the occurrenceof an upset has the burden ofproof.
5. Treatment of SingleOperationalEvent For purposes ofthis permit, A Single Operational Eventwhich leads to simultaneous violations ofmore 

### than one pollutantparametershall be treated as a single violation. A single operational eventis.an exceptionalincidentwhich causes simultaneous,**unintentional,~owing** (not 

## tile result ofalmowiI;lg.act or omission), telTlPorary noncompliance withmore than,one Clean.WaterAct effluent discharge pollutantParameter. A single operational event doesnot includeClean Water Act violations involvingdischargewithouta**~DESperrnit** or noncompliance to theextentcaused by**improp~ly** designedor inadeq1,JatetJ;eatment facilities. Each dayofa single operational event is a violation.
6. Overt1ows from**W~stewatqGonveyance** Systems and AssociatedPump Stations a. Definitions 0) "Overflow" means the diversion and discharge ofwaste streamsfromany portion ofthe wastewater conveyance system including pump stations, througha designedoverflowdevice or structure, other than discharges to the wastewatertreatment facility. (2) "Severe property damage" means substantial physical damage to property,damageto the conveyance systemor pump stationwhichcauses them to become inoperable, or substantial and permanentloss ofnatural .resources which can reasonablybe expectedto occurin the. absenceof an overflow. DEQIWQ/SWM-RN-00465.doc (5/05)Expiration Date: June 30, 2007 Permit Number: 102541 File Number: 111807 Page 14 of 18 (3) "Uncontrolled overflow" means the diversion ofwaste streams other than througha designed overflowdevice or structure,for example to overfloW1ng manholes Or overflowing into residences, commercial establishments, or industries that may 

## be connectedto a conveyance system.
b. Prohibitionof overflows. Overflowsare prohibited unless: (1) Overflows were unavoidable to prevent 

## an uncontrolled overflow,loss oflife, personal injury,or severeproperty damage; (2) There were no 'feasible alternatives to the overflows, such as the use ofauxiliarypumpingor conveyance systems, or maximization of conveyance systemstorage; and

. (3) The overflows are the result of an upset as definedin General ConditionB.4. and meetingall requirements ofthis condition.

" c. Uncontrolled overflows are prohibitedwhere wastewater is likelyt6'escape or be catriedinto the waters of the State by any means. d. Reporting required. Unlessotherwisespecifiedin writingby theDepartment,all overflows and uncontrolled overflows must be reported orallyto the DepartmentWithin 24 hours from the time the permitteebecomes aware ofthe overflow. Reporting procedures-are described in more detail in General ConditionD.5.

. 7. PublicNotificationofEffluentViolation or Oyerflow Ifeffluent limitations specifiedin this pennit are exceededor an overf}owoccUrs, upon requestby the Department, the permitteeshall take such stepsas 

### are necessaryto alert the publicabout tlieextentand nature ofthe discharge. Such stepsmay include, but are not limited to,posting ofthe river at access points 

## and other places, news releases, and paid announcements on radio and television.
8. Removed Substances Solids, sludges;' filterbackwash, 

## or other pollutants removedin the course oftreatinent or control'ofwastewaters shallbe disposed'of'irt sucha manneras to preventimy pollutant from sllchl'naterials from enteringpublic waters, causingnuisance conditions, or creatinga public health hazard.
SECTION C. MONITORING AND RECORDS
1. Representative SamPling Sampling-and measutemerltstake:i1 

## as requited herem shallbe representatiVe of the volumeandnllture of the monitoreddischarge." All saDlples shall betaken at the monitoring pdintsspecified in this permit and'shallbe taken, unless otherwise specified, before the effluentjoins oris dilutedby any other wastestreatn, body ofwater, or substance.'Monitoringpoihts shall not be changedWithout notification to 

## and the apPt"ovalofthe Director.
2. Flow Measurements Appropriate flow measurement devicesand methods consistentwith accepted SeientiflC practices shall be selected and usedto ensurethe accuracy and reliability ofmeasurements of the volume ofmonitored discharges, The devices shall be installed,calibratedaridrnaintained to insure that the accuracy ofthe meas1Jrements is consistentwith the acceptedcapabilityof that type. ofdevice. Devices selectedshall be capable ofmeasuring flowswith a maximum deviation ofless than ± 10percentfromtrue discharge rates throughout the range ofexpected discharge volumes.
3. Monitoring Procedures Monitoring must be conducted according to test procedures approved under40 CFR Part 136,unlessothertest procedures have been specified in this permit. \ DEQIWQ/SWM-RN-00465.doc (5/05)

## "



# . , 

### , 

# ... Expiration Date: June 30, 2007**Permit~umber:** 102541 File Number: 111807 Page 15 of 18

4. Penaltiesof Tampering ., i' ••

.**Th~** 

### Clean**Wat~r** .t\qtproyj(ies**~!anypersonw~Q falsitie~,.tamperswifu,or**  knowinglyren4ersinaccurate, any monitoring device or methodrequiredjo.be mainta,ined under**this.l:'~t:sh.aJl,** u,poncoqvic;tion, be punishedby a fine of not more than $10,000 per violation, or by imprisonment for not morethan two years, or by both. If a conviction ofa person is for a violation committed after a first**~nvirti~!,.f~uch** J>erSoq,.p1.Jnishment isa 

### fme not morethan $20,000per day ofviolation, or by imprisonment of nofmore 

## than foiir years or both,
5. 

### Re.eorting qfMonitoringRc:su1W Monitoring results**sh~l** blli\sU1lllllarized, each (llonth**Oll/~{Disi~PMge** ¥onitoring.Report form. 

### approved by the Department.

.**:nter~rtss1'q111** 

### be.**~~mittF4!p1011Wr~** tU:C:.' to be rnaile4.i.pelivered 9r otherwise transmittedby the '\ .15th day of the**followi~g.month unle~~8Pecifically**  a:RPr0wf::d**o~se** inSchedule.B ofthis permit.
6. Additional Monitoringby the Permittee i If the permittee monitorsany pollutantmore frequently than requiredby this 

### PerpUt,**~ing!** test procedures approved 

### under**~o CF~.J.36or**  as specified

## ill this permit, thereS}Jlts**ofthi~ rnonitorjngs~ll1;>e**  includedin the calculation and reporting ofthe data submittedin the Disc);large¥oqitorjng!tq>Ort,.·**Su,chin~sed ~uency**  .shall also be indicated. For a pollutantparameterthat may be sampledmore 

### than once per day (e.g.,Total Chlorine Residual),

.onlythe average daily value shall be recordedunlessotherwisespecifiedin this permit.
7. AvsralZilli ofMeasuwnents ! Calculations for alllimitationswhichreqlJireavetllging of**measurements(s~llutiJi~an** ¢thmetic mean, exceptfor bacteriawhich**shall~averageq** as specifiedin this permit,
8. Retention of Records Exceptfor records ofmonitoring ,infofP'lation require<lby.this**~t rel~d**  

### 19**~e** permittee's sewage sludgeuse and disposal activities, )Vhich 

### shall\le**re~ined.forap~od of~** **l~tfi;ve ye~**  (()l' lon,geJ; as required by 40 CFR part 503),the**penni~e** shall.retain.rpcordsof all J11onitopng inf()J:'fllatiOnt incl1,1dillg**~lcalibration** . and maintenance recordsof all originalstrip chart recordings for continuousrnpnitoritlg**ips~Ultlon, copi~s**  ofall reports required by this permit,and records ofall data used to completethe applicationfor this permit,for a period ofat least 3 years fromthe date ofthe sample, measurement, report or application. This**period~y** 

### be extended by request ofthe Directorat any time.

.. 9. Records Corwarts Records of monitoring.**info~tiqn** shall include: a. The date, exact place, time and methods of samplingor measurements;

. b. The individual(s) who performedthe samplingor measurements;

c. The date(s)analyses**w~e** perfqnne4; d. The individqal(s) wh,operfooued analyses;, .i. e. The**analyt~cal** techniq\les.ormethods used; and f. The resu,lts of such**·analy~s.** 10. Inspection and Entry The permittee shall allow the Director,or an authorizedrepresentative upon the presentationofcredentialsto: a. Enterupon the permittee's. premiseswhere a regulated fac:ility or activityis locatedor conducted,or where recordsmust be. kept under the conditions, ofthis. permit; b. Haveaccess to and copy,atreasonabletimes, MY records. that must.bekept under theconditions ofthis permit;

DEQIWQ/SWM-RN-00465.doc (5/05), , 

# .. , Expiration Date: June 30, 2007**Pennit~umber:** 102541 File Number: 111807 Page 16 of 18



### c.
d. Inspectat reasonabletimes any facilities, equipment (including monitoring and control equipment), practices,or operationsregulated orrequired Ullder this Permit, and

. .. . . Sampleor monitor at reasonable;times,' 

### for the puipose 

### 'Of assuringpermit complianceor 

# as otherwise authorized by state 

## law, any substances or parirtrletets at 

## any lobation.

1. PlannedChanges The permitteeshall complywith OregonAdministrative Rules (OAR)340, Division 52,'flReviewo:f'Plans and Specifications".**Exceptwhetee~etnptedundet** 

### 0 

# AR 340.S2, no'constrUcti,on, irlstidlatioh,'Or modification involving disposal systems, treatment

### ~ks,**sewera~e ~Ystems'6t'coftttnon**  sewers sha11becOinrhettced untilthe plans and

" specifications are subrnittedtoand approved**bythe~~::** 

### 'Thepetnlittee 

### shall give !loticet6 the Department

as soonas possible ofany plannedphysical alternations or additions to the**pennitt~d** facility.
2. Anticipated**~onc0l!mli@J1ce** .." The permittee shaU'givea,chrancenotice to the DirectOr ofayyplarllledehariges in the permitted facilitY or activity whichmayresult in noncompliance**Withpemntt~quireri1ents.** :
. 3. Transfers This permitmay be transferred to a new permitteeprovidedthe transfereeacquiresa propertyinterestin the permittedactivityand agrees in writing to fullycomplywith all the t

# enns**andcondi~Oris** of

### the ':pennit and the rules of the Commission.**~o'permit** shall be transfetttd to a thirdparty without 'prior written apProvalfrorn the Director. The permitteeshallnotify the Department when a1rarlsfer of

### property interest takes place.
4. COmPliance Schedule Reports ofcomplianceorn01'lcompliance with,oranyprogresstepom 

## ian interim mdftnal 'reqwrettients contained in any compliaIJce schedUle ofthis 

### permit slmllbeslibrnittedIlolater thaid 4 da)iSfolloWingeach ,schedUle date. Any reports ofnoncompliance shall include thcH:atise ofnoncomPliance, any remediill'actions 

### taken, and the probability ofmeetingtheriext schedUled requirements.

. 

### 5. Twenty·Fout

### HourRe,porting The permittee shallreport any noncompliance whichmay endangerhealth or the environment. Any information shallbe providedorally (by telephone) within 24 hours, unless otherwise specifiedin this permit, from the time the permitteebecomes aware ofthe circumstances. Duringnormalbusinesshours,the Departrl'ltmtsRegionaloffice shallbe called. Outside ofnormalbusinesshours,the Departrt'lent 

### shall be'cOn'tactedat**1-g004S2"()~11** (Oregon Emergency Response System);
A written submission shall also be providedwithin 5 days ofthe'time the'pertnitteebecomesaware ofthe circumstances. If the permittee is establishing an affirmative def'engeofupset or bypasstoanydffense under ORS 468.922to 468.946,and in whichcase ifthe origimilrepOrting noficewas 

### oral, delivere'd 

### writteri notice mustbe made to the Departmentor other agencywith regulatoryjurisdiction within 4'(four)calen'dardays. The written submission shall contain: a. A description ofthe noncompliance and its cause; b. The perioo'of noncompliance,inclUding exact dates and times; c. The estimatedtime noncompliance is expectedto continueififhas not been corrected; d. Stepstaken or plannedto reduce, eliininafe;and preverit reoccurrenceof 

### the' noncompliance; and e. Publicnotification steps taken, pursuant'to General Condition 

### R7.
The following shall**b~** includedas informationwhich must be reportedwithin24 hours under this paragraph: DEQIWQ/SWM-RN-00465.doc (5/05)

# ... , 

# .
.. I

- ExpirationDate: June 30, 2007 Permit Number: 102541 File Number: 111807 Page 17 of 18 a. Any unanticipated bypasswhichexceedsany.effluentlimitationin.this permit. b. Any**up~et, ~bichexqeeds**  any effll.tent**lintit~tionm** this per,mit. ,',",'" ." ,, . c. Violationof

### maximUJJ14~ily**Pi~9bat"ge.lhnj~tion** for any of th.epollv,tants .listedby the Directorin this permit. ., , . ' ,., ' "

(J ".'.' , , " ., : The Department may waivethewrittenreport on**~. case~by-casebasis**  

### if the Oral fepPrt has been receivedwithin24 hours.

. " ,,'

6. Otha- Noncompliance ',,'; ", 'i ' ...i,

. The permittee shall repqrtall insUinces of**non,c()mpliance,no~** repprtee,{ under**G~eralCon,clition** 0.4 or D.5, at the time monitoring reportS are submitted. The reports shan contain: s • " a. A description of the noncompliance and its cause;

. " '

b. The period of noncompliance, includingexact**~te~** and times; c. The estimatedtime nonfompli8Ace is expecteq ioconti,tlueifit 

## has**n()t~en** corrected; and d. Stepstakenor plannedto reduce,eliminate •. and preycmt reppClJ,n"enCe of

## the noncompliance.

" ;',,' ,', ': ,",i " ,:"""i :.: ':',;"" .. , c,·.·.·: ' 7. Duty to ProvideInfonnation The permittee shall furnishto the Department, within a reasonable time,any inforrna#onwhich.the,DepartIpent may requestto determine compliance with this permit. The**p~ttee** shallalso furnisht() 

### the'**Dep~ent,** 

### upon request, copiesof recordsrequiredto be keptby thispermit. ' " " ' j Other Information: Whenthe permittee becomesaware that it failedto submitany

### ~levant facts

# 'ht a

### p~t application, or submitted incorrectinformation in a permit application or any report 

### tQ the, I>epaJ:1roent, 

### it shall promptlysubmitsuch factsor information. '. " ' , ! 8. Signatory Reguirements All applications, reportsor information submitted to the Department shall be signecl and certified

### in accordance with 40CFR 122.22.. ' , 9. Falsification ofInfo1lIU!tion A personwho suppliesthe Department with false information,pr omits material or reqv,iredinformanon, as specified in ORS 468.953**i~** subject

### to criminal**:prpsec~tion.** ' , "
10. Changes to Indirect

### Disc~gerS [Applicable to Publitly Owned Treatment

### ~~rkS(l-OTW)**~nly]** The permittee must provide adequate notice to the**Dep~t** of thefollowing: " , , ' ,; a. Any new introduction

### ofpollp!an~ intq the POTWfrqID anindirect

### disc\1.lu:g~ 

### Which**wo~Jd** 

### be subjectto section 

### 30 lor 306 of,the Clean.Water Apt,**ifit~ere** directlydiscbargjngth9se**poUv,tan~ ~(k**  

## .: b. Any substantial changein the volume or charactero(pollv,tants being in1roduc.cd into the

### ~OTW by a
.); .'

. ;. , ),' '" - " -, ' " ,_ " 1_' , " ',:': :;"' '" ,:. Ji,; -:**~,** source introducing pollutants intothe POTW at the time of issuance of the permit. c. For the purposesof this paragraph, adequatenotice shallinclude information on (i) the qualityand quantity of effluent introduced intothe POTW 7 and (ii) any anticipated impactof the changeon the quantity or qualityof effluentto be discharged from the POTW. '
11. Changes toDischarges of ToxicPollutant- [Applicable to existing manufacturlng, commercial, mining, and silvicultural dischargers only] The permittee mustnotifythe Department as soon as they knowor havereasonto believeof the following: a. That any activityhas occurred or will occur whichwouldresultin the discharge, on a routineor frequent basis, of any toxicpollutantwhichis not limitedin the permit, if that discharge will exceedthe highestof the following "notification levels: DEQIWQ/SWM-RN-00465.doc (5/05)**~'...** ..

... '". ;, Expiration Date: June 30, 2007 Permit Number: 102541 File Number: 111807 Pagel8 of 18 (1) (2)

(3) (4) Onehundredtnicrogratns pet liter (100 IlgIL); 

### Two-hundred micrograms petliter(200**~Wt>futacr()lein** and acrylonitrile; five hundred microirarns'per litet (500 IlgIL) for**2,4~d1nittophenoland** for 2-methyl-4,6-dinitrophenol; and one milligramPerliter (1 mg/L) for antimony; Five (5) times the maximumconcentration**valu~** reportedfor thatpollutant in the permit application ihaccofdance with 40 

### CFR t2i21(g)(7);'or ,., ' The level established by the Department in accordance with 40 CFR I22.44(f).
\ 

### b. That any activityhas occurred or. will occur \Vhich ",ould result,inany discharge, on a**nOn-routin~** or infrequentbasis, ofa toxic pollutant which is

### ~of lirrlited 

## in the permit; if

### that dischargewill exceedthe highestof the following "notificationlevels": ',. (1) Fivehundred micrograms 

# Per litet(SOqi/-lg;L);. (2) One milligram

# 1'9" liter (1 mgtt)[orantimony;' (3) Teri(IO) times the maximumconc,entration valuet'eported for 

### that pollutant in the permit applicationin accordance 

### with 40 CFR122.21 (g)(7); Of '.

. (4) The level establishedby the Departmentin accordance with40 CFR 122.44(f). SECTIONE.DEFINr.g:O+i§

. 1. BOD**meansfive~y** biochemicill oxygen demand. 2. TSS meanstotal suspended solids. 3. mg/L means milligrams per liter. 4. kg means**kil()~..** .. .' 5.

. m 3/d means cubic 'meters per day. 6. MOD meansmilliongallonsper day. 7. Composite samplemeans a sampleformedby collectingand mixingdiscretesamplestaken periodicallyand based on time or flow. \. , 8. FC means fecal coliformbacteria; 9. Technology basedpermit effluent limitations means technology-based treatment requirements as definedin 40 CFR 125.3, and concentration and mass load effluentlimitationsthat are basedon minimumdesign criteria specifiedin OAR 340-41.

. 10. CBOD means five 

### 'day carbonaceous biochemical oxygendetnafid. 11. Grab samplemeansan individual discretesamplecollected over 

## aperiod of'time not to exceed 15 minutes. 12. Quartermeans JanuarythroughMarch, April throughJune,July through September, or October through December, 13. Month means calendarmonth.' '. '. 14. Week l'Qeans a calen<Urr",eek of Sunday**throughS~tUt-daY.** 15. Total'reSidual**chIorine)t1leans.combinedchl()ri~e fonnsPlusfreeteSia~fchloti1le.**  16. The term "bacteria" inclUdes but is notlimited to fecal coliformbacteria, total coljforn1 bacteria, and E. coli bacteria. 17. POTW'meansa pub1icly owned

### trea:tn1~t 

### works.

.

DEQ/WQ/SWM-RN-00465.doc (5/05)