United States Office Of Water EPA 833-F-93-002 

Environmental Protection (EN-336) 

Agency 

March 1992 

EPA NPDES Storm Water Program 

Question And Answer Document 

Volume 1 
NPDES 

Storm Water Program 

Question and Answer Document 

EPA 

U.S. Environmental Protection Agency 

Office of Wastewater Enforcement and Compliance 

Permits Division 

401 M Street, SW 

Washington, DC 20460 

March 1992 
INDUSTRIAL PERMIT APPLICATION QU

Category I - Facilities subject to storm water effluent guidelines, new source 

performance standards, or toxic pollutant effluent standards. 

1. What kinds of facilities are included under category (I)? 

Category (I) includes facilities subject to storm water effluent limitations 

guidelines, new source performance standards, or toxic pollutant effluent 

standards under Title 40 subchapter N of the Code of Federal Regulations 

(CFR) (except facilities with toxic pollutant effluent standards which are 

exempted under category (xi) of the definition of storm water discharge 

associated with industrial activity). The term "storm water" modifies only 

"effluent limitations guidelines." Facilities subject to subcategories with new 

source performance standards, toxic pollutant effluent standards, or storm 

water effluent limitation guidelines are required to submit a National Pollutant 

Discharge Elimination System (NPDES) permit application for storm water 

discharges associated with industrial activity. 

2. What kinds of facilities are subject to storm water effluent guidelines? 

The following categories of facilities have storm water effluent guidelines for at 

least one of their subcategories: cement manufacturing (40 CFR 411); feedlots 

(40 CFR 412); fertilizer manufacturing (40 CFR 418); petroleum refining (40 CFR 

419); phosphate manufacturing (40 CFR 422); steam electric power generation 

(40 CFR 423); coal mining (40 CFR 434); mineral mining and processing (40 

CFR 436); ore mining and dressing (40 CFR 440); and asphalt (40 CFR 443). A 

facility that falls into one of these general categories should examine the effluent 

guideline to determine if it is categorized in one of the subcategories that have 

storm water effluent guidelines. If a facility is classified as one of those 

subcategories, that facility is subject to the standards listed in the CFR for that 

category, and as such, is required to submit a storm water discharge permit 

application. 

3. What kinds of facilities are subject to “toxic pollutant effluent standards”? 

First, it is important to understand the term toxic pollutant. Toxic pollutants 

refers to the priority pollutants fisted in Tables II and Ill of Appendix D to 40 CFR 

part 122 (not 40 CFR Part 129). If any of these toxic pollutants are limited in 

an effluent guideline to which the facility is subject (including pretreatment 

standards), then the facility must apply for a storm water permit. The following 

1 March 16, 1992 
categories of facilities have toxic pollutant effluent standards for at least one 

subcategory: 

Textile mills (40 CFR 410) 

Electroplating (40 CFR 413) 

Organic chemicals, plastics, and synthetic fibers (40 CFR 414) 

Inorganic chemicals (40 CFR 415) 

Petroleum refining (40 CFR 419) 

Iron and steel manufacturing (40 CFR 420) 

Nonferrous metals manufacturing (40 CFR 421) 

Steam electric power generating (40 CFR 423) 

Ferroalloy manufacturing (40 CFR 424) 

Leather tanning and finishing (40 CFR 425) 

Glass manufacturing (40 CFR 426) 

Rubber manufacturing (40 CFR 428). 

Timber products processing (40 CFR 429) 

Pulp, paper, and paperboard (40 CFR 430) 

Metal finishing (40 CFR 433) 

Pharmaceutical manufacturing (40 CFR 439) 

Ore mining and dressing (40 CFR 440) 

Pesticide chemicals (40 CFR 455) 

Photographic processing (40 CFR 459) 

Battery manufacturing (40 CFR 461) 

Metal molding and casting (40 CFR 464) 

Coil coating (40 CFR 465) 

Porcelain enameling (40 CFR 466) 

Aluminum forming (40 CFR 467) 

Copper forming (40 CFR 468) 

Electrical and electronic components (40 CFR 469) 

Nonferrous metals forming and metal powders (40 CFR 471) 

4. What kinds of facilities are subject to "new source performance 

standards"? 

Most effluent guidelines listed in subchapter N contain New Source 

Performance Standards (NSPS). A facility that is subject to a NSPS as defined 

for that particular effluent guideline is required to submit a permit application for 

the storm water discharges associated with industrial activity at that site. The 

definition of a new source varies based on the publication date of the particular 

effluent guideline. 

The following categories of 40 CFR Subchapter N facilities do not have new 

source performance standards. All other categories have at least one 

subcategory with new source performance standards. 

2 March 16, 1992 
Oil and Gas ExtractIon (40 CFR 435) 

Mineral Mining and Processing (40 CFR 436) 

Gum and Wood Chemicals Manufacturing (40 CFR 454) 

Pestidde Chemicals (40 CFR 455) 

Explosives Manufacturing (40 CFR 457) 

Photographic (40 CFR 459) 

Hospital (40 CFR 460) 

5. lf a faciilty is included under th8 description Of both category (i) and 

category (xi), Is that facility required to submit a storm water permit 

application if matertal handling equipment or l cUvtUe8, raw materials, 

intermedlrte products, final products, wasto materials, by-products, or 

industrial machinery are not exposed to storm watW 

The answer depends on why the facility is included in category (i). If the facility 

is included in category (i) because it is subject to storm water effluent standaras 

or new source performance standards, the facility is required to apply for a 

permit regardless of whether it has exposure or not. Facilities that are included 

in category (i) only becaUS8 they have toxic pollutant effluent standards are not 

required to submit an application if they indeed have no exposure to material 

handling equipment or activities, raw materials, intermediate products, final 

products, waste materiak, by-products, or industrial machinery. 

Categories ii, iii, vi, viii, and xl 

6. What industrlal .groups are COVered by Standard Industrial Classification 

(SIC) cod8s thst are used in the definition of storm water discharge 

associated wlth Industrial octlvlty? 

The following SIC codes and associated industries are included in the indicated 

categories of the definition: 

Category (ii) 

24 (except 2434) - Lumber and Wood Products (except wood kitchen 

cabinets) 

26 (except 265 and 267) - Paper and Allied Products (except paperboard 

containers and products) 

28 (except 283 and 285) - Chemicals and Allied Products (except drugs 

and paints) 

29 - Petroleum Refining Industries 

311 - Leather Tanning and Finishing 

3 March 16, 1992 
32 (except 323) - Stone/Clay/Glass and Concrete Products (except 

glass products made of purchased glass) 

33 - primary Metal lndustri8S 

3$41- Fabricated Structural Metals 

373 - Ship and Boat Building and Repairing 

Category ON 

10 - Metal Mining 

12 - Coal Mining 

13 - Oil and Gas Extr&&n 

14 - Norrmetallic Minerals 

5015 - Motor Vehicles PaRs, Used 

5093 - Scrap and Waste Materials 

Category (viii) 

40 - Railroad Transport&&t 

41- Local Paswng8r Transpom 

42 (except 42214225) - Trucking and %whOusing (8~~8pt public 

warebusing and storage) 

43 - U.S. Postal S8wica 

44 - Water Transportatiorr 

45 - Transportation by Air 

5171 - Petroleum Bulk Stations and Terminals 

20 - Food and Kindred Products 

21 -TobaccoProducts 

22-T8xtileMiUPrOducts 

23 - Apparel AjBlat8d Products 

2434 - Wood Kitcfwn Cabinets Manufacturing 

25 - Furniture and FDctures 

265 - P-d Containers and Boxes 

267 - Converted Paper and Paperboard Products 

27 - Printing, Publishing, and Allied Industries 

283 - Drugs 

285 - Paints, Varnishes, Lacquer, Enamds, and Allied PIodudts 

30 - Rubber and Plastics 

31 (except 311) - Leather and Leather Products (except leather 

tanning and finishing) 

3& - Glass Products 

34 (except 3441) - Fabricated Metal Products (except fabricated 

structural metal) 

4 March 16,1992 
35 - Industrial and Commercial Machinery and Computer EqUipm8nt 

s - Electronic and Other Electrical Equipment and CompOfJ8rrtS 

37 (except 373) - Transportation Equipment (except ship and boat 

building and repairing) 

36 - Measuring, Analyzing, and Controlling Instruments 

39 - Miscellaneous Manufacturing industries 

4221-4225 - Public Warehousing and Storage 

category iii - Mining and Oil & Ga8 Opectttoru I 

7. Are Inactive mines included In the regulation? 

Two conditions must be met for an inactive mine to be required to submit a 

storm water discharge permit application. First, the facility must have a 

discharge of storm water that has corn8 into contact with any overburden, raw 

material, intermediate products, finished products, byproducts, or waste 

products located on the Site of the facility. Th8 second condition depends on 

the type of mining activity. 

Inactive non-coal mining operations must apply until such sites are released 

from applicable State or Fed8rd reC!amatiOn requirements after December 17, 

19X1. Non-coal mining operations released from applicable State or Federal 

requirements before December 17, 1990, must appty for an NPDES storm water 

discharge permit if the storm water discharges are contaminated as discussed 

above. 

Inactive coal mining operations must apply unless the performance bond issued 

to the facility by the appropriate Surface Mining Control and Reclamation Act 

(SMCRA) authority has been released. 

8. Are any oil 6 gas l XplOraUOn, production, promng, or treatment 

operations, or transmission facilltles classtfled under SIC code 13, exempt 

from hrvlng to apply for a storm water permit? 

Yes, such facilities are exempt unless they have discharged storm water after 

November 16, 1987, conMining a Reportable QuaMy (RQ) of a pollutant for 

which n&fk&n is or was required pursuant to 40 CFR 117.21, 40 CFR 302.6, 

or 40 CER 110.6; or if a storm wat8r disoherge from the facility contributes to a 

vi&&n of a water quality standard, as. set focth in 40 CFR 12226(c)(l)(iii). 

5 Msd~ 16, 1992 
9. mat b a rwmble qurfdty for discharge8 frOmI an Oil or gu 

opera-‘) 

b defim at 40 CFR 110.6, an RQ is the amount of oil that violat8s appik&&~ 

water quality standards of CaLIsBs a film or Sh88il upon or a discoloration of the 

surface of the water of adjoining shoreiin8s of caus8s a Sludge or emulsion to 

be deposited beneath the SurfaCe of th8 water or upon adjOining shorelines (40 

CFR part 110.6). The RQs for Other substances are listed in 40 CFR 117.3 and 

302.4 in tom6 of pounds mleased over any 2ehow period. 

10. in l ccua roada for minlng oparations covarod? 

AJTY construction that disturbs 5 acres or more of total land area must appty for 

a storm water discharge permit. 

After construction, roads for mining operations would not b8 induded unless 

storm water runoff from such roads mixes with storm water that is contaminated 

by contact with overburden, raw materials, intermediate products, finished 

products, byproducts, or wasts pmducts. wher\ K&S are constructed out of 

materials such as ov8rburden or byproducts, an application for an NPDES 

storm water discharge permit would be required. 

1 Category hr - Hazardou8 Waste Treatment, Storage, or Disposal Facllitks -1 

11. Is a facility that stores hazardous waste less than 90 days required to 

submit an appllcrtron? 

tt is EPA’s intent to cxw8r tise facilities that are op8raQng und8r interim status 

or permit under the Resource Conservation and Recovery Act (RUM) subtitle 

C. As such, only faciiities meeting the definition of a hazardous waste 

treatment, storage, or disposal facility under RCRA are expressb induckl in 

this category. A f’aciiity that stores hazardous waste less than 90 days is not 

considered to be a treatrmnt, storage, or disposal facility, and therefore is not 

required to submit a storm water permit application. 

6 March 16,1992 
ategory v - UWfliir, Land Appii~tlOn Situ and Open Dump8 

12. Do dosed of inrctlvo landfill8 noed to rppiy for I permit? 

yes. Any landfill, active, inactive or dosed, must appJy for a permit if it receives, 

or has received, wastes from the industrial facilities ideWed under 

1~.26@)(14)(i)-(xii. To the extent that wntrol measures snd best management 

practices address storm water, Uie permit may incorporate those control 

measures. 

13. Do08 a irndflil th8t focmiv- Only the office w8sto and/or cafeterir waste 

from Indurtriri frcflitiu hrvo to apply for rn NPDES pormlt? 

No. Only landfilb that receive or have received waste from manufacturing 

portions of industrial facifities need to apply for a permit. 

r 1 

1 Category vi - Recyciing Ftdlttlea I 

14. Are grr station8 or repair shop* that coiioct tire8 or battorIes classified In 

tiw ‘recycilng’ category? 

No. Onty those faciiities classified in SIC codes 5015 (used motor vehicle parts) 

and 5093 (scrap and waste materials) are in the ‘recycling’ category. This 

indudes facilities such as metal scrap yards, battery reclaimers, salvage yards, 

and automobile junk yards. 

15. Are municipal w88t@ coiition sItea included in category (vi)? 

No. Municipal waste collection sites where bottles, cans, and newspapers are 

collected for recyding purposes are not classified as SIC codes 5015 or 5093. 
c8twov # . mm Eioctric Power Genertting FacMti~ I 

16. 

17. 

16. 

19. 

20. 

m. mm reformer aroma reguiatti undar the NPDES 8tonn watu 

fUlO? 

~0. Uporr examination of the Toxic Substances Control Act, EPA determined 

mat the regulation of storm water discharges from these faciJM8s should be 

studied under sectiorl402@)(5) of the Clean Water Act (CWA) (55 FR 48013). 

FtJtW8 regulations may be developed to address these areas. 

MO storm water dbctwg88 from doctricri 8ubsUtion8 induded in the 

definttlon of indurtrfri rctMty? 

No. Elm substations are not covered by this regulation. 

Arm storm water discharger from coal pii@ thrt are located offsite from 

the power M&ion included in the definition of indwtriri am 

No. Offsite coal piles are not covered by this regulatiorr. In order to be 

induded, a coal pile must be located on the site of a facMy defined by the 

regulation as being ‘engaged in an industrial actMy.’ 

Are storm water dischrrges from co-ganorrtbn frcitltlos included In the 

dofinttlon of industrial l cUvity? 

A heat capture ahgeneration facility is not covered under the definition of storm 

water discharge associated with industrial activity; however, a dual fuel cogeneWon facility is included and therefore must submit an applicathn for the 

storm watsr discharges associated with industrial activhy. 

Are unlvar8tty powu planta inciudod in the definition of lndwtrhl rdivtty? 

Y8S. A university steam eh3ctric power generating facility is required to appty for 

a storm water discharge permit. 

March 16, 1992 
Category viii - Transportation Fadittie8 

21. &O g88 StrtiOnS snd 8UtOfTlOtiW repSir Shop8 r~Uir.d t.0 apply fOf an 

NPDES storm water dlSChltg0 penm 

No. These fadlties are dasHed in SIC codes 5541 (gasoline filling stations) 

and 7538 (automotive repair shops). The storm water rule generally does not 

address facilities with SIC classifications pertaining to wholesale, retail, service 

or commercial activities. Additional regulation!3 addressing these sources may 

be developed under section 403(p)(6) of the CWA if studies required under 

Section 402(p)(5) indicate the need for regulation. 

22. Doer a vehicla mrintenrnca shop or an equipment derning facility need 

to rpply for a permit? 

Yes, if the shop is categorized by the SIC codes listed in the transportation 

category of facilities engaged in industrial activity [i.e., SIC codes 40, 41 1 42 

(except 4221-25) 43, 44, 45 and 51711. Only the vehide maintenance (including 

v8hid8 r8habiiiQtiOn, mechaniti repairs, painting, fueling, and lubrication) and 

equipment deaning areas (such as truck washing areas) must b8 addressed in 

the application. 

As expiained above, gas stations are dassified in SIC code 5541 and 

automotive repair seticeS are classified as SIC code 75, which are not induded 

in the regulatory definition of industrial a&ii, and therefore are not required to 

submit NPDES storm water diSdWg8 permit applications. 

23. Are fI!uniCipaliy Owed and/or OperSt@d SChoO! bU8 rMintenanc8 taclllties 

required to apply for an NPDES permw7 

NO. The SIC Maf~al states that ‘school bus 8stabliShments operated by 

educational institutbns should be treated as auxiliaries’ to the educational 

institution. Since th8 SIC code assigned to educational institutjons is 82, the 

municipally opera&d (i.e., by a school board, district, or other municipal entrty) 

school bus establishments would not be required to apply for an NPDES permrt 

for their storm water discharges. Private contract school bus services are 

required to apply for an NPDES permit for their storm water discharges. 

March 16,1992 
24. k SIC cod0 4212 ahMy 8SSigned t0 f8diiti~ with dump truc)u? 

No. me mainMan facility must be primarily engaged in maintaining the 

dump Wck to be chafac!emed as SIC code 4212. Dump trucks used for road 

maintenance and construction and fadlit& that maintain these trucks are 

dassifred under SIC code 16 (heavy mnstruction other than building 

construction) and therefore would not be characterized as engaging in 

industrial activity. 

25. How doe8 a munidprlity detormina what typo of vohido a patiWiar 

mrlntenrnca frdilty la prlmrrliy engagad in $wvldng? 

The SIC Manual recommends using a value of receipts or revenues approach 

to d8t8rmine what is the primafy activity of a facility. For example, if a 

maintenance facility services born school buses and intercity buses, th8 facility 

would total receipts for each type of vehicle and whichever generated me most 

revenue, w?uld be th8 vehicle type that the facility is primarily engaged in 

servicing. If data on rextnues and receipts are not available, the number of 

vehicles and fRKjU8nCy of S8fVk8 may be EBmpWd. tf a fadiity SeWiCeS more 

than two types of vehicles, whichever type generates the most (not necessarily 

greater than half of the t&al) revenue, or is most frequent& sa~&~!, is the 

vehicle type th8 facility is primarily engaged in servicing. 

26. is 8 muntcfprt mrintonrnca frdiity m8t I8 ptlmuUy ong8god in SWVldng 

garbage trucks required to apply for 8 pwmlt? 

The answer depends on the SIC code assigned to m8 establishmant If the 

municipality aiso owns th8 disposal facility (e.g., landfill, incinerator) that 

re~&et~ refuse transported by the tnrck~, then the maintenance facility would 

be da&W as SIC code 4953 and thus would nut be required to apply for a 

permit unless the maintenance facility was locat8d at a facility covered under 

one of the other categdries of industrial activity (e.g., a landfill mat receives 

industrial waste). tf, however, th8 municipality does not own the disposal 

facility, the truck maintenance facility would be classified as SIC code 4212 and 

thus wou(d be required to apply for a permit. If other vehicles are SeWbed at 

the same maintenanca facility, the facility may not be required to submit a 

permit ap@&tbn (see question #25 above). 

10 hmch 16,1992 
27. Are fira trucks or police car8 included In the transportWon SIC codos? 

No. The Operation of fire trucks and poke cars are dassifiad under pubk 

order and safety (SIC code 92); Wefore, the Operator Of a facility primarily 

engaged in sewicing those vehides would n0t be required t0 apply f0f a permit. 

28. Do ail Simon mod to apply for I StOrnI w8tW dkchrrgo p.rrM? 

No,onlythOseairpOrtsdassifiedasSiCcode45. Ontyth~sepoMns~fthe 

facdily that are &hef hwv/wci in vslhids fnaimmm (ii- sehkle 

rehabilitation, mechanical repairs, painting, tiing, and iubriOz&n), equipment 

cleaning, or airpOrt deicing w Which &We otkWW& iderrtifisd under 

12226@)(14)(i)-(vii) or [w-xi) are required to be petrmittad. Airports that are not 

engaged in such acbhies do not require storm water &charge permits. 

Facilities primafiIy engaged in psrtorming sewicss that incidentalIy use airplanes 

(e.g., crop dusting and aerial photography) are classified according to the 

SeWiCe pWfOfm8d. 

29. IS the dekhg Of l irpiaM8, runways, or both indudad in 8irport dddng 

operations? 

Airports or airline companies must apply for a storm water disoharge permit for 

locations where deicing dwtikals are applied. This indudes, but is not limited 

to, runways, taxbays, ramps, and areas us43d for the deicing of airphes. The 

operator of the aim should appIy for the storm water discharge permit with 

individual airline 00mpani8s in&&d as ~appkants. 

30. Who b r~poruibio for saoking pwmtt cowrage at an rkport #at haa 

mrny comprnisr using tha f8diity l d dlschrrging storm w+tti 

m8 OperZItOr iS r8SpOnSi~ for seeking CoWWage. EPA Stmgb 8moUrag8S 

cooperation between the airport authority and al operathg airlines at that 

airpart. Each opwat~f is responsible for coordinating with the Others and they 

may act as co-applicants. Please note that under 12226(a)(6) the Director has 

the di to issue individual permits to each discharger or to issue an 

indiuaI permit to the airport operator and have other dischargers to the same 

system act as co-permittees to the permit issued to the airpoct operator. 

11 March 16, 1992 
31. 

32. 

33. 

34. 

35. 

36. 

in ra#aad frdittiu included? 

equipmscrtckrningm 

12226~)(14)(i)-(viii 

ouledse-under 

or (ii)-(xii need to a&Tf a pudt. 

Arm rop8klrlong a nlirord system coruiduod to k vahicio mrintuunco 

and them reguhtad? 

An tsnk farm8 at *burn bulk 8torrgo 8taUona covawd by the rule? 

No,unlessthostormwatsr~~~tKwn~~farmarsa~ingleswith 

stormwaterfKwnanyvehicJemaintsnancsshopsorequiprncu7tdeaning 

operations bated onsite. Howeww, tankfamsbcatedonsitewithothw 

industrial facilities, as defined in 12226(b)(l4), are irUh&d in the tegulation. 

is I prrklng tot 8uodrtad uMth 8 vehicio malntuwnca Shop induded In 

m0 r~uiatlon? 

Yes. under 122a @)(14)(w) VeJhw mairrterrencs and bquipment CIemiq 

maintenano0adjvfty. 

is ma fuailng opuauon of 8 trmsportation faclltty (SIC coda8 40 thrOUgtl 

45) covwd if there arm no other vahldo mMtan8nca rctMtl88 tiking 

ph- 8t m0 fadim 

Yes. A nonretail f&i operation is considered vehide maintenance [see 

12226@)(14)(viii)] and requires an NPDES stem water discharge permit 

applbecbn. 

k a nwnuf8cturlng frdifty’s oflstto voWdo mrintenmca faditty required to 

apply for a permit undu the tran8ptxtMon c-H~~oW 

No. An offsite vehide maintenance facility supporting one company would not 

berequiredto~focapermititmatcompanyis~primari3rscrgagedin 

providingtmmpndmf58dtxsandm~sfors~ldnot~~asSIC 

12 Man21 16, 1992 
37. 

code 42. The maintenance facility would be considered an auxiliary operation 

to the manufacturing facility. For a full discussion on auxiliary facilities see page 

13 through 17 of the 1987 Standard Industrial CiassificatM Manual. if the 

maintetnance facility is iocatedgn the Same s& as the manufacturing operatiorl, 

it would be induded in the areas associated with industrial actMy and must be 

addressed in an appkatiOn. 

I8 a mrrlnr required to rpply for a storm water pemdt if it operate8 a retall 

fueling operation, but other whlclo mdntenrncefi mqulpment clernlng 

rctlvttles are not conducted onstto? 

Facilities that are ‘primarity engaged’ in operating marinas are best dassified as 

SIC 4493 - marinas. These facilities rent boat slips, store boats, and generally 

perform a range of other marine services including boat ckaning and incidental 

boat repair. They frequeW!‘y sell food, fuel, fishing supplies, and may sell boats. 

For facilities classified as 4493 that are involved in vehicle (boat) maintenance 

activities (induding vehicle rehabilitation, mechanical repairs, painting, fueling, 

and lubrication) of equipment cleaning operations, those poWns of the facility 

that are invotved in such vehicle maintenance activities are considered to be 

associated with industrial activity and are covered under the storm water 

regulations. 

Facilities classified as 4493 that are llQf involved in equipment cieaning or 

vehide maintenance actkit& @cbding vehicle reha&ilitatM, mechanical 

repairs, painting, and iubrica&n) are not intended to be covered under 40 CFR 

Section 12226@)(14)(viii) of the storm water permit apm regulations. The 

retail sale of fuel aione at marinas, without any other vehii maintenance or 

equipment cleaning operations, is not co&Wed to be grounds for coverage 

under the storm water reguiations. 

Marine facilities that are ‘primariiy engaged’ in the retail sale of fuel and 

lubricating oils are best dassified as SIC code 5541 - marine sefvice statMs - 

and are not axered under 40 CFR Section 122.26@)(14)(viii) of the storm water 

permit appkatM regulations. These facilities may also sell other merchandise 

or perform minor repair work. 

Facilitiai ‘primarity engaged’ in the operation of sports and recreation senkxs 

such as boat rmtai, canoe rental, and party fishing, are best das&ied under 

SIC code 7999 - misc8M8ous recreational faciiii - and are not covered 

under 40 CFR Section 12226@)(14)(viii). 

13 March 16, lW2 
Category ix - Swag0 Trostment Works 

38. us &rm wstsr permtt 8ppksUons rsquirsd for offsits (Lo., physksiiy 

sepsrstsd from the msrn trostment works proputy) pumping ststtons? 

No, storm water permit appikations are not required for such sites. 

39. Are 8opsrsto pormtt sppkstlons raquirad for vohiclo mslntsnsncs/ 

wsshlng fsdMtiss (locstod slthar onsits or offsIts) sssoc4stod with a 

wastewat~ treatment phnt and OW~@~/OPWSW by ma w88t~at~ 

treatment sgenc)cl 

Offsite vehide maintenance facilities would not be required to submit 

applications unless they s8rve muMpi dients since they do not fit the SIC 

codes listed in the transportation category of facilities engaged in industrial 

activity. Onsite vehide maintenance/cleaning operations are associated with 

industrial activity and must be induded in the application. 

40. DO wsstewstsr trostrnsnt fscilWss that colkt thdr storm wstsr runofi and 

tr08t the storm watsr IS part of m0 norms1 inflow mat is procsssed 

through the trestmsnt plant have to spply for a permit? 

No. If a facility discharges its storm water into the headworks of the treatment 

plant, it is essentiality the same as discharging to a combined system or to a 

sanitary system and is therefore exempt from the requirements of 12226(c). 

41. The dsfinltlon ststss thst offstto sross where 8ludgo is bsnsfldslly reused 

sro not Included as storm wstor dlschsrgets sssociatsd wtth industrial 

sctivtty. How la beneficisl reuse defined? 

Beneficial sludge reuse is the application of sludge as a nutrient builder or soil 

conditioner. Examples indude agricultural or domestic application. 

14 March 16, 1992 
x - Construction Activities 1 

me individual application deadline for all storm water discharges associated 

a industtiEii activity is 10/l /92. If a construction activity is completed by 

lo/i /92, an application is not required. 

43. what k the duration of an NPDES permtt luuod to-r I constructjon 

omw 

me permit will be eff%hve aS long tile COnStruction activity continues, but no 

longer than five years. If the Construti0n continues beyond five years, the 

owner/ooerator must appty for a new permit. 

44. DOU the conWwtion category only Include construction of Industrial 

bulldIngS? 

NO. Any wnstructiOn activity, induding clearing, grading, and excavation, that 

resut& in the disturbance of five acres of land or more in total is covered by the 

rule. Such activities may indude road building, construction of residentjal 

houses, office buildings, or industrial buildings, and demolition actMy. 

However, this does not apply to agricuttural or silviwltural activities, which are 

exempt from NPOES permit requirements under 40 CFR 122.4. 

45. Doer the rule requlr0 that storm water dlschrrger rftw c~nstructlon be 

rddresred? 

Yes. The individual application must describe proposed measures to control 

pollutants in storm water discharges that will occur after c~ns@u&on operations 

are complete, including a description of State and local erosion and sediment 

control specifications. 

-Note: EPA believes that construction rctMtW should bo covered under 

a 8Wm water general pumit wherovu poulble. 40 CFR 122i2l(c)(l) rll~ws tha 

Ming WhoMy to establlrh dtfferont and shortof wbmittal data8 undo the 

m tOfma of 8 prrtkulrr g8nwal pwmk 

15 March 16,1992 
46. 7%. deMtlon statea that tha operator8 of construction l otlvtty that dkturb 

lea3 than flva act08 are not raqulrad to apply for a permit unka that 

construction la part of a Iargor common plan of development or ark. 

What la maant by .paft of a Iargar common plan of devdopmant or ark? 

‘Pan of a larger common plan of development or sale’ is a contiguous area 

where multiple separate and distinct construction achities may be taking place 

at different times on different scftedulets under one plan. Thus, if a distinct 

construction activity has m ideWed onsite by the time the application would 

be submitted, that distinct actMy should be induded as part of the larger plan. 

47. Who la reaponslble for l pplylng for a storm water vlt? 

The operator is responsible for applying for the permit as required by 122.21 (b). 

In the case of construction, the owner may submit an application for a 

construction activity if the operators have not yet been identified. However, 

once the operators have been identiftecf, they must betoome either sole 

permittees or co-permit-tees with the owner. The operator is determined by who 

has day to day supervision and control of activities occurring at a site. In some 

casts, the operator may be the owner or the developer, at other sites the 

operator may be the general contractor. 

1 Category xl - Ught lnduatrlal FacMtlea I 

48. lf a category (xl) facility haa determined that there I8 no expoaura of 

cMaln l ctjvttlea or areaa Ilated In the deflnltlon to atorm water and the 

operator doea not file a pormit application, how doaa the operator prove, 

II asked, that ho/ah. dld not naed to apply? 

There are no requirements set fond under the November 16, 1990, rule. 

However, the operator may want to document the facility evaluation which led to 

the condusion that there is no exposure to storm water. This documentation 

should be retained onsite. Some States may have specific requirements. A 

facility is advised to check with its NPDES permitting authority for additional 

requirements. 

16 March 16, 1992 
49. DO thou IndusWa lJ*ed ln 1~26(b)(14)(ti) that only have l coau roads 

and rati Una aXpOSti t0 8tOtlll Wrtw nOed to apply for a pormk? 

NO. As stated in 122.26 @)(14), facilities in category (xii do not have to apply 

for a permit if Storm Water Onb is exposed to acc8ss roads and rail lines. 

50. n air polftion contrd equipment vanta on ma roof arm oxpo8ad to 8torm 

watu, does UM ctmatiM0 axpaw and triggar a pumtt condltloh? 

NO. The exposure of air poMon controd equipant m does nol in its&f 

coc1stjttRe exposure. lt is possible, ~,tM~WMl&EtUSeOfair 

pollution control equipment, sign- polbtants may be exposed to storm 

water. For example, if a Cydone, a common partia~late control device, is used 

alone, only about 80 percerrt of tM potential polhAants would be removed. 20 

percent of the pollutants may then come into C0nMct wM storm water. ln @Iis 

case, a permit application is required. 

51. If thue ha8 bean p8St @xpo8ur*, can a frrdltty change Its operation to 

ellmlnato exposure, rnd mu8 bacomo l xompt? 

Yes. H a category (xi) facility can change its operation and eliminate a# 

exposure, me f&Iii may be exempt from the regulatbn. tt is &tpcMant to 

note, however, that eliminating exposure may indude dean up as weU. 

52. l$ a covered dumpder Contrinlng wa8t@ matd#rlrl kept out8ld@ con8ldored 

axpo8ur.l) 

No, as long as the ctxttainetr is compktely covered and nothing can drain out’ 

holes in bottom, or L bat in loading onto a garb8ge trudr, tii would not be 

considered exposure. 

I I 

1 General Appllcablllty 

53. How la l storm water outfall tram an Induatrtal rite defined for tna purpose 

01 rampllng? 

An indugrial outfall is ttre point at whicf~ storm water associated with industrial 

activity discharges to waters of me United States or a separate storm sewer. 

Separate storm sewers may be roads kth drainage systems, municipal streets, 

catch basins, curbs, gutters, ditches, man-made channels, or storm drains. 

17 March 16,1992 
54. Are tank farma considered to ba SSSOcfSt@d with lndustrirl rctMty7 

Yes, if they are located at a facility described in the definition of storm water 

discharge associated with industrial activity. Tank farms art) used to store 

products and materials used or created by industrial facilities, and therefore are 

directly related to manufacturing processes. However, tank farms associated 

with petrohm bulk storage stations, dassified as SIC code 5171, at which no 

vehicle maintenance or equipment deaning operations occur, are exempt. 

55. la an offstto warohouso urod8tti wfth a regulated InduaWrl frcllity 

requlrod to l ubmtt an appfkation? 

NO. As stated on page 46011 of the preamble to the November 16, 1990, rule, 

warehouses of either preassembly parts or finished products that are not 

located at an industrial facility are not required to submit an application unless 

otherwise covered by the rule. 

56. If a facility ha8 more than one lndustrlal l ctivfty, how many applications 

are requirad? 

Only one application is required per facility. Permit conditions will address the 

~afious operations at me facility. The application must reflect all storm water 

discharges from areas associated with industrial acMy as described in t?e 

definition at 122.26@)(14). The activity in which a facility is primarily engaged 

determines what SIC code is assigned to that facility. To determine the actjvrty 

in which a facility is primarily engaged, The SIC Manual recommends using a 

value of receipts or revenues approach. For example, if a facility manufactures 

both metal and plastic products, the facility would total receipts for each 

operaQon and me opeWon that generated the most revenue for the facility IS 

the operation in which the facility is primarily engaged. If revenues and recerpts 

are not available for a particular facility, the number of employees or productton 

rate may be compared. lf a facility performs more than two types of operations. 

whichever operation generates the most (not necessarity the majority) revenue 

or empIoys the most personnel, is the operation in which the facility is pnmanty 

engaged. 

57. Are lndustrlal facillUe8 located In munlclpalltles wlth fewer than 100,000 

reSid8nt8 required to apply for a permlt? 

Yes. All industrial discharges of storm water through separate storm sewers 01 

into waters of the United States must appfy for an NPDES permit. 

18 March 16, 1B2 
58. fl the SIC code for me 8CtJVJV in WMh 8 kiiity I8 pfimrrily ongaged i8 

not indudti in ma definition of rtorm W8t.r di8&8rg. 8uocja.d Wftjj 

Indu8ti8i 8-t but tfw f8dim h88 8 8OCOndrry SIC cod. Umt I8 

included in U-U dflnmon, i8 m0 faclitty required to wbmit l n NPDES 

dorm W8tM permit 8ppiiatiOn? 

59. me miiit8fy b88w Of OthW hdefri faciiith regulated under thi8 rule? 

yes. Industrial activities identiiad under 12226@)(14)(i)-(xi) that Federal, State, 

or Municipal governments own or operate are subject to then regulation. 

60. Doe$ th. f@gUirtlOn WUir. 8 met fOf 8tOm W8tW dlSCh8rgw to 8 

publicly OWMd tfO8tfTIOfIt WOr)u? 

No. Adischargetoasanitaryseweroracombinedsewersystemisnd 

regulated under the storm water regulation. Storm watw discharges aittw to 

waters of the Uhited states or Separate storm sawetf systems require a permit if 

associated with any of the industrial facilities listed in 122.26@)(i) - (xi). 

61. h@ t?lWO 8ny iitlltt8 M 8iZa tWtdctiOft8 Which n8mW tile 8COpO Of f8Ciiitiet 

requiring an 8ppii&iOfI? 

. . . The only restrictions regarding size are for consW%n achvrtw and sewage 

treatment works. All CoIIstTtlction actMes must apply fof permit coverage 

except for operations that disturb less than five acres of total land which are not 

part of 8 larger common plan of development or sale. Sewage treatment works 

designed to treat one million gallons per day or more must submit an NPDES 

permit application. 

19 March16,1992 
62. Do pilot @ants or reSe8rch and developmant I8difUe8 cla8Mfhd within ona 

of th. re@ated SIC cod- n@.d to 8ppiy for 8 pu’mlt? 

A pilot plant or research facility &Wfied by an SIC code which is specified 

under 12226@)(14)(i)-(xi) would be required to submit an application. A pirot 

ptant or research facility’s opwations can be directly related to the 

maMacUing opedcms of the full-scale f8cilii and thembra wanant a permit. 

63. Are stocQllm8 of 8 flnrl product from rn induatrl8l8lto m8t 1ro located 

rwry from the InduStrtJ pi8flt 8tt0, Indudod undu tn. doflnfflon of 8torm 

w8t@r dkchrQ@ 8SSod8t.d Wtth induttrlri 8ctlvr() 

Such stockpiles would not be covered because they are not located at the site 

of the industrial facility. 

64. if 8 f8diity h88 8 NPDES permit for ltS procass w8StSW8tSr 8nd soma, but 

not 811, Of its StOrnl W8tSr diSdr8rgeS 888OCi8tSd Wtth indUStri8i 8Ctivtty, 

does the oper8tor need to rppiy? 

The operator must ensure that all storm water discharges associated with 

industrial activity are covered by an NPDES permit. The operator may wish to 

submit an individual application, participate in a group application, or seek 

coverage under a general permit for any remaining outfalls that are not covered 

by an existing NPDES permit. The permitting authority may also wish to modify 

the existing NPDES permit to cover the other storm water discharges. 

65. A facility holds 8 reCenUy renewed NPDES permit whkh does not cover 

StOfITI WOtOf db~h8fga~. DOW m8t fsdiity MOd t0 8ppiy? 

Yes. If the facility is identified in paragraph 12226@)(14)(i) through (xi) of the 

rule, that facility may wish to submit an individual application, participate in a 

group application, or seek coverage under a general permit for any remaining 

outfalls that are not covered by an existing NPDES permit. The permitting 

authority may also wish to modify or reissue the existing NPDES permit to cover 

the other storm water discharges. 

66. tf a regulrted company owns and operates 8 subsidirry which b of s 

WhOlSS8lO or commercial nrture, would the Sub8idisry need to 8ppi)r, 

No. Since the subsidiary facility’s operations are of a wholesale or commercial 

orientation, the operations are not considered to be industrial and therefore 

20 March 16,1992 
would not be covered by this ale unless they are s-b Covefed by ON!J of 

the SIC codds or narrative descriptions in 122.26@)(14). 

67. CSn en rppll~ati claim confld@nthllty on information corMnod in rn 

NPDES permit rppilcation? 

No. Under 40 CFR 122.7(b), the permitting authority will derry &ims of 

confidentialityforthenameand~ressatanypsnnitepplicantorpermittee, 

permit appkations, permits, 8nd efhent data 

68. Do the Novwnbu 16,1990, ragulatbna modify the roquirmonta of 

existing storm w&tar Hflumt guiddina8? 

No. Existing storm water e8hent guidelines are still appkabk. 

69. Which rpplicatlon form8 8ro Industrlu raspon8ibia for 8ubmitting’l 

e For discharges composed enti&y of storm water, Operators should 

submit Form 1 and Form 2F. 

e Fordischaqaofstormwatercombinedwithproaasswastewater, 

opemtm should submit Form 1, Form 2F, and Form X. 

s For storm water disc&q@ in combhMn WW nonprocess wastewater, 

operators should submit Form 1, Form 2F, and Form 2E. 

Fornewsoufces ofnewdischargetsofstomlwaterwhichwiiibe 

combinedwithdhernokstormwater,opsratorsshouldsubmitForm1, 

Form 2F, and Form 20. 

70. Are Superfund 8itoa regulated under mb ruk? 

Yes,ifthesiteisassignedanSiCcodeorfitsthedescriptiocrof0rreofthe 

categorl8eiiiinmedeflnitionofstormwatefdii-with 

indust& activity. Under the Superfund Amendmerrt and RB Act 

(SARA) section 121(E), Superfund sites are required to ‘substantively mph 

with all environmeW regulatMs. 

21 March 16,1992 
71. &. ama wed for th. dlspoul Of indurtrfrl V 8nd Udt8~ 

e Indudod in the doflnfflon of ‘auochtod wlth IndustrW 

l - 

Yes, the definition indudes sites used for process water land application that 

are not used for agricutbml actMies. 

72. DO IMCth indW&i8i f8diiUm n@Od t0 rp@y? 

Yes,if~facilityisindudedirl~~nitiorrofstormwatsrdischarge 

associstedwithindustrialactMtyand&gniimatsriabrernainonsiteand 

are exposed to storm water runoff @.46CW of 11/16/91 Federal Register). The 

regulation defines significant materials at 122.26 (b)(13) as in&ding, but not 

limited to, raw materials; fuels; materials such as soivmts, detergents, and 

plastic pellets; finished materials such as metallii products; raw materials used 

in food processing or production; hazardous substances designated under 

sectM 101(14) of the Comprehensive Environmantal Response, 

CompenWon, and Liability Act; any chemical the facility is required to report 

pursuant to sac&n 313 of title Ill of SARA; fortSzen; pestkides; and waste 

products such as ashes, slag and sludge that have the potential to be released 

with storm water discharges. 

73. Can 8 t8Cllf’ty 8ppiy for rn IndMduri pwmtt 8ftw c0mpieting ma group 

rppilc8tion or rpplylng for covwago under 8 g.flOfd permit? 

This option is available, but the operator is advised to discuss the matter 

dir- with the pefrnitting authority. 

74. If 8 trdiity b tOt8i!y endO8ed With n0 m8tWt8k Or 8Cti~tti.8 Wf308Od t0 

8tOfnl W8tOf, but hu 8 Point SOurCO di8Ch8rge Of 8tOrITl W8tw, 18 8 parmtt 

rppllcrtion required? 

tf the Mility is described in categories 12226@)(14)(i-x) a permit application is 

required regardless of the actual exposure of materials or activities to storm 

water. W tha facMy is described in 12226@)(14)(xi), a permit application is 

required only if there is exposure oi materials or activities to storm wate’r. 

22 March 16, 1992 
75. How do.8 8 mUniCip8iiy OWMd indurrtrtrl fadiity 8ppiY for 8n NPDES 

permit? 

Such a facility must meet the same application requirements as any other 

induskal facility. The fadMy may submit an individual permit application (Forms 

1 and 2F), participate in a group application, of seek coverage under an 

available general permit. 

76. Who is required to 8UbfTItt Form 11 

Anyone submitting NPDES application Forms X, 2D, 

individual application is required to submit Form 1. 

2E, 2F, or a construction 

77. Beforo the October 1,1992, IndMdurl rppiicrtton de8diine, which fOmI8 

must 8 f8Ciiit~ SUbmtt t0 renew it8 NPDES pemt for 8 StOm W8ter 

discharge? 

Since the individual st0rr~1 water application is not due until October 1, 1992, 

EPA is allowing such facWes to choose whether the storm water discharges 

are identified on a Form 2C or a Form 2F. After October 1, 1992, a faacility 

must submit an application in accordance with 40 CFR 122.26(c) (i.e., Forms 1 

and 2F). 

78. Are wrshwrter8 md/or noncontrct Cooling wrtefa (e.g., rir conditioner 

condenrrte) Included in the definition of rtorm w8tti 

NO. ‘Stm watti means StOrm Water runoff, snow fMt w&f, and surface 

runoff and drainage. Washwaters are usually considered to be process 

wastewater. Noncontd cooling waters are consid8red a nonprocess 

wastewater. 

23 March 16, 19Qz