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HomeMy WebLinkAboutNC0026271_Regional Office Historical File Pre 2018 (17)SOC PRIORITY PROJECT: Yes -No X If Yes, SOC No. To: Permits and Engineering Unit, Water Quality Section Attention: Greg Nizich Date: August.4, 1995 NPDES STAFF REPORT AND RECOMMENDATION County: Alexander Permit No. NCO026271 (Modification) PART I - GENERAL INFORMATION 1. Facility and Address: Taylorsville WWTP 204 Main Avenue Drive S. E. Taylorsville, NC 28681 2. Date of Investigation: July 25, 1995 3. Report Prepared By: Todd St. John 4. Persons Contacted and Telephone Number: Mr. Bob Duncan (704) 632-5280 5. Directions to Site: Travel on Hwy 16 North to Taylorsville. _Turn left on Main Avenue. Turn left on 7th Street S.W. Turn left on Happy Plains Road. Turn left on Minnington Road. The WWTP is at the end of the road. 6. Discharge Point(s). List for all discharge points: Latitude: 35' 53' 02" Longitude: 81° 11' 44" Attach a U.S.G.S. map extract and indicate treatment facility site and discharge point on map. U.S.G.S. Quad No.: D14NW U.S.G.S. Name: Taylorsville, NC 7. Site size and expansion are consistent with application? Yes X No_! If No, explain: 8. Topography (relationship to flood plain included): The site appears to be in a flood prone area; however, according to the staff report dated December 19, 1991, this facility is not in i 1 , the 100 year flood plain. 9. Location of nearest dwelling: approximately 500 feet 10. Receiving stream or affected surface waters: Lower Little River a. Classification: C b. River Basin and Subbasin No.: 030832 C. Describe receiving stream features and pertinent downstream uses: The stream is approximately 80 feet wide, has considerable flow, and has a bed that consists of sand, mud, and rock. The stream has typical class "C" usage downstream. PART H - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS 1. a. Volume of wastewater to be permitted: 0.83 MGD (Ultimate Design Capacity) b. What is the current permitted capacity of the wastewater treatment facility? 0.43 MGD c. Actual treatment capacity of the current facility (current design capacity)? 0.43 MGD d. Date(s) and construction activities allowed by previous Authorizations to Construct issued in the previous two years: N/A e. Please provide a description of existing or substantially constructed wastewater treatment facilities: Facility consists of a bar screen, a flow splitting box, two Imhoff tanks (in series), two trickling filters in series, an aeration basin, a secondary clarifier, an aerobic digester, and chlorination devices. This facility also has sludge drying beds (not currently in use). f. Please provide a description of proposed wastewater treatment facilities: The proposed facilities will consist of a manual bar screen, a manual grit chamber, a flow. splitting box, dual aeration.basins, dual final clarifiers, dual chlorine contactchambers, one dechlorination tank, and four aerobic digesters which, according to the diagram submitted with the application, appear to accept wasted sludge from either clarifier. g. Possible toxic impacts to surface waters: This facility is apparently handling industrial wastewater from various sources including textile and furniture. h. Pretreatment Program (POTWs only): None at this time. However, this facility Page 2 I currently treats and will treat industrial waste water in the future. The Town. of Taylorsville is in the process of establishing a pretreatment program. in development: X I 2. Residuals handling and utilization/disposal scheme: a. If residuals are being land applied, please specify DEM Permit No.: WQ0006906 Residuals Contractor: Wheelabrator Clean Water Systems, Inc., Biogrow Division Telephone No.: (410) 224 0022 b. Residuals stabilization: , PSRP: X RFRP: Other: C. Landfill: N/A r, d. Other disposal/utilization scheme (specify): This facility has been burying the solids collected from the bar screen and the Imhoff tanks on site. This facility, does not have a permit to dispose of these solids in this manner. 3. ' Treatment.plant classification (attach completed rating sheet): This facility will be class II as currently submitted. However, the facility may be required to have backup power and/or mechanical post aeration. Either of these additions would cause the facility to be class III. 4. SIC Code(s): 4952 Wastewater Code(s) of actual wastewater, not particular facilities, i.e., non -contact cooling water discharge from a metal plating company would be 14, not 56. Primary:01 Secondary: 02 Main Treatment Unit Code: 02 0 0-3 PART III - OTHER PERTINENT INFORMATION 1. Is this facility being constructed with Construction Grant Funds or are any public monies involved (municipals only)? Yes 2. Special monitoring or limitations (including toxicity) requests: This facility is and will be processing industrial wastewater from various industries including textile and furniture industries. The Town of Taylorsville is currently in the process of developing a pretreatment program. Page 3 3. Important SOC, JOC or Compliance Schedule dates: (please indicate) N/A 4. Alternative Analysis Evaluation: Has the facility evaluated all of the non -discharge options available. Please provide regional perspective for each option evaluated. Spray Irrigation: This facility currently has an NPDES permit. It also has several sites for land application of residuals. The writer is not sure as to the feasibility of obtaining enough land to use spray irrigation. Connection to Regional Sewer System: There is no regional sewer system available. . Subsurface: Appears to be cost prohibitive as well as impractical. Other Disposal Options: N/A 5. Other Special Items: PART IV - EVALUATION AND RECOMMENDATIONS The current condition of this facility is inadequate. The arms of one of the trickling filters do not rotate, although they do continue to receive water. The arms of the other filter rotate only 'intermittently. When this facility was designed mercury seals were used which have since been removed. This facility has been unable to replace these seals with an adequate system to produce proper functioning of the trickling filter arms. As a result it is clear that an upgrade is necessary. However, there are several concerns that should be noted: 1) There has been no reliability determination made in reference to power supply. Page 4 2) The outfall to the river is approximately two., miles from the plant. Currently, effluent is being sampled at the plant and not at the outfall. As, a result the need for re -aeration may be , an issue. 3) The debris from_ the manual bar ,screen and the Imhoff tanks are currently being buried at the facility. Solids removed from the bar screens should be placed in a covered container and taken to the county/city landfill for disposal, provided the landfill authority concurs. Sludges removed from the Imhoff tanks must be treated- and disposed with the other wastewater sludges. 4) It appears that textile and other industries are using the system:. Therefore, it is recommended that the Town adopt a pretreatment program. The Town is. apparently in the process of developing a pretreatment program. 5) Enforcement has recently been recommended by this office for several e$luent violations. It is recommended that the permit modifications be approved provided the above mentioned concerns are addressed. 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SW31SAS lOd1N00 NOLLnllOd U31VM d0 NOIJLV0141SSV10 dOd 31VOS JNI1VU (3) (4) (a) (4) REM POWs Irtduattlal Pro"Ri" lilts or i ndtratAaf Pretreatment Program "dolktltbn No. 3!).__...:....:.......»._»._....».:.«_�.41 DESIGN FLOW OF PLANT IN gpd (rot applicable to nor►conteminated 000ing tratere, sludge handling fwMies for water purrtication plash, lately dosed cycle sfrstems(see dernition No. 11and fa ilttiee consisting ody 0( kern (4xd) or Sens (4)(d) and (i 1)(d)) �15 2-l>00.001 Pend up) ate t oolnt asietlottal for MCA 200,000 Wd oapaaky ape la a amin nrm 0f _30 0ealpn f1o+t (m) P�e.ftiriARY t�irTs►PR)C (god (w deirniionML32 )(a) 411110,801vers.-_ or (b) ifedtanieal Screens, Stalk SOraees Or Conr111"I 0 Dwlaa ..»...« (a) Ckk Removal--...___«...____..._ ____...».»____......_._.».».r.._..._.... - or _ (d) hbohnniealorasedCk PAmovd.» _.»_ ...».»__ .._« M ..._.__».»__«...».«.«...2 ,of (f ) n menled M*MlemanL MPrewratlon.........»...._............__._ ._...._�_».._.. _........._._..... .........2 frfluers Fbw t3gw(tratbn. "Z �h) i) Orcue or al Separator; - Wavlly. Mechanical.._.__. »»_...�-«..... Dhoolvsd Air Pottlon._......__ .... _._.._.....3 fISRi�CESSGr+ PRfdAF1YTREATMENT Lf 2 (a) Septic Tank (ase defMbn No. 43) . (b) brftfl Tank..»»»» .... _. __.._ ......... C) Pffrnary' Clartflera.. Se41Mng Tanka for Inorganic Non-tMI MatnWe (sludge hrWWG twila' s for water d Ponds or Win ea ion plas, eared, gravel, slam, and Other mining oparatso icra eept MMMionai ectivkies Such as gem oo... .»...._»_...__...... __.........._.....__»-_ Z DkRYTFiFJ►TusBO� (a) Carbortaaeots SteQe (1) Aeratiott•Hgh Purity Csaygen SpatefrL �„ _ 01tuaed Air System......._.___._.____»__-_�_.......__..._ Wcfwnical Air SySMm pfsad, Golding or rotor) . "Separate Sludge Pwavoon. ._... _..5 (g) TddJinp Filer _ .7 "gn Standard Rate..._ Packed Tower..«...... (RI) gilogical Aerated Filter or Mrabd dblogical Filter .10 (Iv) Aerated Lagoons...»_._.._._. (v) poteting Siobgka! (VI) Send Men; -rnlermtnent bbbpkaL._ wecreu{ating bbfogical �. •"••'-•3 (vt) Subltzatbn Lagoons s 4ftdkvSM& stage sysiem for wmbhW euboneowua nt"wal of DOD and NtroprMOMM mntow by atrrscation (see ddrtltbn No. 12)(Poi is for Ws item Mrs 10,1011 In addrbn 0 "mil (6)h)P) "Muoh (a)(a)(vill), rpltzlrtp the Met aeraton prows (see definition No3a) _ , 1Rtttlnp other then fhe emended aeration proeesa NvtUnt additions to enhrm 000 removal_ - - _ --A_) -A :I) /bbQieal Culture ('super Btrp odditfon- (b) geactia amp elks •Mph Pwly Deypen Slelem �n llI Mused Air spasm._...__ Wcfwnical Air System Mod. Boating or rotor) .._ Sspmo Sludge ReaerMlcn-_________-____ -- 7 (p) TeaMinp Fitter -High Rats - — a Standard Rate.. Packed Tarn.__ ;- ral Aerated Filler or Aerated 0tobpieal fasr 10 F713! o.. !beating Biological Contaan ...._ _,,,,10 � Sand Filler - interminerf blobpirsl:.-.r_.__. Recirculating biological JERTNRYOR�MiCEDTiEkTMENT WTSVFCCESSES (a) Activated Carbon Bede • 5 without carbon ngen 013110 _ uth carbon "notation. — (b) flbwft Ot Caton F@ R iehfnala carbon �enerittim- 1 a esth carbon regentitatkmAir d) sew ) Denitrmcsson process a) Efeel R f) Foam $@Pernbrt oo) ran Exchange_._ h) Card Application of Treated Effluent (see definition W. Zlb) (not applicable for sand. WEVA alone atnd Other similar adnirng operations) by Alpit rate htfia7tflor. - e fflferosersone.....,_...__._ 20 (j) Phosphorous Removal bit 0tokngkat Prtxetsee (Sss dsN+ilon No.:)_ __.__�_._.--_.:.-.•-- () Potlehinnp Ponds vi thoW anatlon._..r__ j v flh aeration --. -- (1) Post Aeration tuscads...._............ ._._._.«._._.....«._._...._..._.._..._......_....... «.« ..........................A tMused or m whw*al.._ .._.. _. _._.................. «.«__....................... 2 (m) Reverse 011111061s.. « .......«.. ....... ...............................................5 (n) land or Wzedifedia Filters - bar rate. _.._ .... «._—_.»_...._...2 fiph (a) Treatment processas for wmoval of metal a ryaNds...»_...______«« _«.«.___._.«».».__...«. «.:....t 5 (p ) Usaiment processes br removal of toxic materials other than natal or cyanide • (7) SLU GETFEATbEff (a) nudge Digestion Tank Nestled (anesroblc) _ t 0 Unhsatsd (b) tikrdpe M— IlIzatbn(dmmicalortlenmal)«__...----_____ _...«_..._. ...._.«.».. »»s (c) Mudge Drying Beds - Oravky (d) Mudge 6Wriailon_.........____..___ _..._ ___...__._.___...._....._...... _...___...».s (0) Mudge Condkkmr (chemical or thermal) (1) nudge TAbkener (gtavky).....__... »»...._._._ .._..... ........._.._........ ...... _..S (0) Dissolved AirFlotation Unit(not appficaeie to a unit Mod as (3XI))..__«_....�_... .«.. ».__..! (h) nudge Gas I.Ozation (including gas storage).. ....»_.2 (1) Mudge folding Tank - Aerated. pl iludge lndneralor (rot I dudkmg activated carbon k) Vacuum Fiber, Centrifuge. or Fiber Press or other sin Uar dawalertng devices (•) IDIlALS urtLlZAT1oP MP0S L (indudump 'cache s ash) (a) Lagoons. ....... .. ».__...._ ..«...... __......».»»«..«.......2 (b) Land Application (surface and ambsuriace) (ase definition 22a) by contracting to a land application operaor or landfill operator who holds time land appfication permit K iuhdil permit ...... _A c() Dedlealed LendW(burial) by the pamYttes of the wastewater treatment faeltyIs) Chiodnatlon---- _._.._ (b) Oschbrination_____..._____—__... _..._______.«._..._..._____... ___ « (c) Ozorr......__.------- _...._».....5 (d) (10) CHEMICAL ADDITION SYSTEM(S) (sse deftnkbn No. 9) (not applicable(Ilito dmenhkal additions rated as fMm (3)()). Xta)(si)• (5Ha)• (@Xb). (7)(b), (?)(a)• (ea). (0)(b) or (0)(c) 5 points each:Lis __...._.....---- ....--------------- .....«_�_____ (11) &ISCELLANEaA UNITSrPFiDC�S3FS (a) Folding Ponds, Holding Tanks or Soft Ponds for organic or Toxic lhatedafs hdu ft wastes from minIng "rations containing nitrogen of phosphorus compounds In amounts Wicanty gnaatar than is common /or dorr»stk (b) Effluent Flow Equalfzatbn (rot applicable to storage basins which am frhlhennt In lard application ayatsms)._.2 (t:) lugs Discharge (not applicable to storage basins Merest In land appfiabon "ens) (d) rumps..«_______._____.._�...___�....___M.__ (0) iund-By Power Supply......«.«__......_._...______... _ _ _ —3 (1) Than" PotWlon Control Device ___...«__ .............�� rVASSFEATi0N Chas 1_ ....... _..-.._...__ _ 1F25 Points Class il.._ __26-50 Ponds Cr ".— _.,... 6145 Points Fist IV K'UP pis lrteltlas tw tg a Ming of one flwouph bur points, iftdtasive, do not require a cooled opsmor. Fa Mdw having an activated sludge process will be aaaIg a minimum dualsleatlon of Gees IL iFadttbt h&*V tee dmm processes for the removal of rtvataf or cyartlde willbe assigned a minimum das>ficaf1 d Class L Fieikies having frommert processes for to bbbgkw nmovel d phosphonu will be assigned a minimum daaslatllon of Chess M. JW1 DEFFOK GIs The foift definitions OW appy lfroughwA fibs Subdopter. (1) Activated Carbon Sods. A ppfhyp•sieaVchemfcal method for reducing soluble organic material from wastewater allkrent; The ookrrrr}fype bads used In this Rod w0 have a flow rats varying from two to eight galore per minute per square foot and may be either upflow or downflow carbon bads. Carbon may or anay not be regenerated an the wastewater treatment port ske; 42) Aerated I-agocne A basin In which all solids we maintained in wapereion and by which biological onion or organic matter is reduced deough artrrdaly aooslerated traveler of oxygen on a Clow -through bask; (3) Aeration. A process of bringing about Intimate coraaet between air or high purlly arygen In a iquld by spraying, agitation sr dtluebng3a) Fsertded Aeumttlon. An scdvated sludge process uUb*V a minimum hydraulic detention time of 18 hours. (t) Agriculturally managed sae. Any eke on w hid a crop Is produced, managed. and harvested (Crop Inckudse camases gnats. Hoes, ate.); (6) Air strWlnj . A process by which the ammonium ion Is first convened to dissolved ammonia (pH ad)uament) with the ammonia Men released to Me A � by physical mean; or other similar prooews which remove petroleum product such as berizee, toluene, and "Unit; at) Carbon �K� ' The fWaramtim d sxhaystad carbon by the use d a furnace to provide aMmey high tarrperstuns which volafte and oxidize the Carbonaoeomu Mage. A stags or wraxtrwabr reatrned designed to sclieve %econdary affluent DiAe; j CCenarY� .. A nmeCw*W device In which =it; ugal force Is used to separate sands from IlgUh* or to sspartb liquids of Werart daroldell: () Systems- The addition of c emfal(s) to wastewater at an application point for purposes or improving solids mmoval, pH stf Mmment. tdc-Irl7 control, etc ;its capability to experimsrt wah dilfsrert chsrnkals and dfPtennt apptkatbn points to achieve a specific result wd be cc, -'-'-?ad ors teyslem; the eapab@ty to add chemleaf(s) to duet units wd be rated as one system; cap k to add a dsmkW at a drarwrt sppticatbn points for diMannt will result In the eeyyasf.erns being rated as ssparsis aysisms 0) Chemical Sludge Conditioning. The addition d a chemical conpourd such as Me, brie dmbdds. or a poljlw to wet sludge b ooabsos th mesa prior to his applkatlon to a dewatering devics; tit) Closed Cycle Systsrths. Use d fofdtrV ponds or hoidng tsnta for OWtLkrrWt of wastewater oontainfnp Inorganic, non -toxic matersak from sand, gravel, ervs►usd store er otlsr sinter operaflont. Such systems alas arty a maximum of two posts repnFlsss of purrpnmg facMMlss or any otter appunansnas; (12) Canbtnsd Removal d Catbonsoeous SOD and Mtrogenoua Removal by Nklicatbn• A "is stage system required to achieve pertM effluent knks an SOD avid ammonk ntrogen within the sans bbbgkW reactor, (13) Dechbrfnttbn The partial or mrrptets reduction of residual chlorine In a squid by any chemical or physics! process; 414) Denkrsfoation Process. The ocnverabn of nkrala-rttrogen to nitrogen, gas; of North Carolina artment of Environment, - th and Natural Resources Division of Environmental Management James B. Hunt, Jr., Governor /Jonathan B. Howes, Secretary XA Preston Howard, Jr., P.E., Director, r. Bob Duncan 204 Main Avenue Drive S.E. Taylorsville, North Carolina 28681 e't" ') Dear Mr. Duncan: �.A I .01 ID FE F I July 14, 1995 ENVI � JUL 2 0 41995 Subject: NPDES Permit ModificatiNn"S101" Of Ei Vlrti Permit No. NCO026271 Town of Taylorsville WWTP Alexander County This is to acknowledge receipt of the following documents -on June 22, 1995: • NPDES Permit Application - Short Form A Application Processing Fee. of $400.00 • Request for flow increase from 0.43 MGD to 0.83 MGD On future applications Standard Form A should be submitted since this treatment plant receives waste from a.primary industry. A copy of this form is enclosed. The plans and specifications submitted for the plant expansion are being returned at this time. They can be resubmitted, along with a $200 processing fee, once the draft permit is prepared for public notice. The review engineer will notify you at that time. I am, by copy of this letter, requesting that the Mooresville Regional Office Supervisor prepare a staff .report and recommendations regarding this discharge. If you have any questions regarding this application, please contact Mr. Greg Nizich at 9197733-5083, ext. 541. Sincerely, 611_- ,�_David A. oodrich, Supervisor . NPDES, Permits Group cc: Mooresville_Regional-Office; West & Associates (w%plans and specs) Permit File P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone 919-733-5083 FAX 919-733-9919 An Equal Opportunity Affirmative Action Employer 50% recycled/ 10%.post-consumer paper 4190 12:40 17044335662 WEST & ASSOCIATES PAGE 02 Junk-' 15, 1.995 WEST AND ASsocIATES, P.A. Mr. Donald L. Safrit, P.E. Watcar• Quality Section Division of Rnvironmental Management NC Dept. of Environment, Health, h Natural Resourc-as P.O. Box 29535 Raleigh, NC 27626-1535 RE: `t`irwn of Taylursvi,lle Wastewater Treatment Plant Expansion and NPDE;S Permit Application Alexander County Dc,:r r Mr. 8afrit.: Pleases find enclosed for the referenced project an application, chock- in the amount. of $400, three spats ofronatructian plans and specificatiang, and a prnr.e-sm diagram. Thege are for your review and approval. Please note that Contract. R: Street ConaLrtaation (shown can the title sheet) is not included in tho plans and spo(;ific:.ations enc:lased. The Taylov-sville, Wastewater Treatment Plant is Currently permitted for 0.430 M17,D urrrler NPDES permit no. NCO026271. .The plant has Occasionally exceaded its permitted capacity and is also expected.to receive greater flaws in the near future, the proposed capanity, therefoLie, is 0.83 MGD upon completion of the expansion. Cn hi•i f,r-t,he expanded facility will use activated sludge biaiogioal treatment in a 'n6,l z cXt:er�ded s r_atian mode. Final clarifier effluent shall be disinfected by cis t.rtr i with r�hlnt ine, sand excess chlorine reaidual intro- dta(:t.ion ofstilf�x �licxid6. Return sludge rate -_shall he approximately 100%, a�n`d- w;�.yt,c�d sludge �rhall be aerol�i slty ges.t O%priori tot�d d_dpplicatica�-, Sludge removal is and shall be accomplishedby pumping _and Iv ling -by` a processes ayxcNpLaHc.reenirig; gkYirr iy permittecl__urrder_permit_-no...WQ ODB906 all c,nrctract.or•. The`Iaiii--Fipplicatit� t- removal, and de-ohlarinmtion will have dual strt. cturr:t, and equipment. Dechlorinaetion will have dual gas feeding equip- rnc.1 i L. ff ycrca need a,clditional information, please let me knOW. Sincerely, WEST AND ASSOCIATES, P.A. � f Renjardin B. Thomas. li j E,nc:lcr:;ca res 405 S. STEgr,1No ST. 6 MORGANTON, NG 28655 • 704.433-5551 FAX: 704-433.5662 NANAL -RESOURCES & MMNITY DBIELPST WETUT-1 COMMISSION FTI0MLMAW DISCIAME ELIMINATION SYSTSA APPLICATION FOk"PEWIT -TO DISCHARGE - SHORT FOR4 A To be ftled onij by mu=iclpal wastewater dischargers APPLICATION NUMBER FOR AGENCY USE n.ATR RECRIME11 YEAR MO. DAY Do not attempt to comPl�­aze this form before reading the accom?anying instructions Please print or type 1. Name- of organizatimm responsible for facility Town of Taylorsville 2. Address, location, and telephone number of facility producing discharge: w,q t L A. Name7,-;vl nrqiri I I e Wqqtp --r Trpa B. Mz:Uing address: 204 Main Ave., Dr., S.E. 1. S= eet address TAylorsville - 3- County Alexander 2. cf-my 4. State NC 5. ZIP 28681 C. Location: SR 1108 and Minnington Rd, South of Taylorsville 1. S=-reet at junct. Of Taylorsville 3- County Alexander 2. City 4. State NC D. Telephone No. 704 632-5280 Area Code If all Four waste I is discharged into a publiclyowned waste treatment facility and a discharge permit,, to the best of your knowledge you are not required to obtain proceed to -item -3. . Otfiaiarwise proceed directly to Item 4. 3. If you meet , the 6omzUtion stated above, check here and supply the information asked fo-�. b'i�iow. After, completing these Items, please complete the date, title, and . , sigmiature--b-ocks i � below and return thisform to the proper reviewing office without , completing:�e 'remainder of 'the form. A. Nap4 of organization responsible for receiving waste B. ity receiving waste: :el t! 1. Nye RC 2. Sweet address .nt 3. City 4. County 5. State 6. ZIP : 4. -4ype oftreatment: :e A.' / [None /Primary C. /Intermediate D. 1_]�FSecondary E. 7 /Advanced 5. Design f low-. laverag� daily) of facility 1.83=gd. 6. Percent BOD removals. (actual): -th Lse, /o /30-64.9 C. /65-84.9 D. /X/85-94.9 E /95 or more ier -tagc 3.. Population -served:: Icck E. /5,000-9,999 F. /10,000 or more /X/1,000-4,999 :ic] 3_:Lj§§ R_ 1 1200�-499 C. /500-999 D. guj ::eec 8. ,Number of.q-e7parate: discharge points: an E. /15 F. 12 C /3 D. 16 or more 14 IIAM O L- aA(2- �c (2_Ee-r4 MpauAL GRI-r C I-1 A yl r �r'— Is 7 %A I'I_ oRs v► LL tz ��f Try , _." �► ft r ; '��v� `,..� era S �L k•` N o, ! DIG�S'fD(Z y To LMJA r? mo. �P_ W ft5'f L. 5 l -J DC DIGES�ntZ- L Tv L-At-I D ,>rfInLlc,e I'o� D I C-U To f2- VIASYr SLJDC-C pe-rur`nl SLJ DGE UiLotzlrJE �- [oNTAL'r 7DECPLt;S AfioQ p EFF-vC-I•l To LoW EZ- L I'TTLE P-I VEJ� c0 uo rwe a Coo TstG-(•' MEAsur t—M Ea•)T" An10 54MPut.IG 4190 12:40 17044335662 JEST & ASSOCIATES PAGE 03 TOWN OF TAYLORSVTLU WASTEWATER TREATMENT PLANT EXPANSION NPD.ES PERMIT NO. NCO026271 AbEXANDER COUNTY Consideration of Non-l)iticharge Alternatives 1. No Ant..ion: This alternative .represents no action, Flows to Dower L,iL•tle River would not be increased; however, this would be due to non - treated discharge entering the basin due to lack of treatment capabi1.i.ty. The town of 'raylorsville: Wastewater Treatment. :is In excess of 85% capacity. Due to existing (levelopment, the oapacit,y will be exceeded within six (6) months. The cost. calculated for this a:l.t,ernative is a $25,000 per day fine for violation of the current, discharge permit.. This would result in a daily fine beginning within ;4.1% (6) months and continuing from that time, ort. Also, since the WWTP now exceeds limits for time to time now, additional fines prior to six (6) months would be likely.., This does prat, consider the loss of revenue due to loss of indus- trial and economic development. Also, this does not address the severe health hazards which would be created within the drainage ham in. 2. Operates Existing Plant at Capacity - Follow with ir.'r.'igaticM hand Appl ica.Ll on: The existing Town of Taylorsville Wastewater Treatment. Plant mould reina i n in its c,urrent condition and volume of treatment. Some minor maintenanne and operation improvements are: needed. The effluent leaving this existing Plant. would degrade with respect to existing .levels of treatment. 'rhis would be acceptable since the land applicat-ion final treatment would be the final treatment process. The process would require a pumping station to lift the untreated effluent to a. final disposal sate. At this site a lined ot:,or. ages lagoon would be needed to provide thirty (30) days stor- age, a final chlorination injection station, force maul, applica- tion fields, distribution lines, feeder pump stat.lons, monitoring wells and other appurtenances. A rrew 2.0 MOD lift station (2. 5 x .833 ) would be. necessary along wi t:h 20,000 LF of 8" force main. Chlorine would be injected into thE� force ma.tn to provide for di.si,ri>:ection prior to land applica- tiori. The contact time in the force main and storage lagoon would provide more than adequate contact time. The storage lagoon would have a capaci.t., of 30 days flow or approximately 25,000,000 gal- ]oris. The lagoon would be lined to prevent groundwater ccrntami.na- t i on. Tow (2) vertical turbine pumps would be used t.o force the wastewater t.hrmigh the di,rt.ributiori lines into the application W4190 12:40 17044335662 WEST & ASSOCIATES PAGE 04 fields. The, system would probably be' limited to .0.5 inc:hea/hour appiieat,iorl rat,e. The .Land required would be approximately fifty (5) acres. The total land requirement would be nearly one -,hundred '(100) acres for application, buffers, and lagoon, storage, 3. discontinue Operation Completely of Town of Taylorsvi.11e - Requi•re All Users to Use Septic: Systems Would require Town of Taylorsville to provide on -site septic: tanks, drain fields with repair areas to all users. May require individual lard application system to some high water volume users. May al -so require additional pretreatment to most industri- al users, There: will be a.total of 1,100 users to be provided some form of septl.c treatment system. 17044335662 WEST & ASSOCIATES PAGE 05 M4/9012:40 1. No Action* COST CONSYDERATTONS OF ALTERNATIVES 30 clays x $25,000/d $750,000/month 14ithin two (2) months, the cost of the alternative in potential f i rn�:I is, $1 , 500, 000: whi uh t-,3 greatur than the proposed pro jet! t cost. 2. Land Application: Lift Station 8" Force Main Chlorine Injector Lagoon Vertical Turbine Pump;i Irrigation Lines Tc-y t. Wells Land Tat•.al Capital Cost, Lump Sum 20,000 LIP @ $10.00/LF Lump Sum Lump Sum 2 @ $50,000.00/EA Lump Sum 20 @ $5,000.00/EA 100 AC @.$5,000.00/AC $ 100,000.00 200,000.00 15.000.00 500,000.00 100,000.00 200,000.00 100,000.00 $1,715,000.00 Again, vap'iLal c:ost;:a exceed the paropvaed project oo5t.. 3. Septic ;systems: 900 Residential Users Q $10,000.00/EA $ 9.000.000.00 150 Commercial -Users @ $151000.00/EA 2,225,000.00 50 Industrial. Users @ $50,000.00/EA 2,500,000.00 Total $13,725,000.00