Res 064-2013 6/18/2013RESOLUTION NO. 64 -2013
Resolution Approving The Programs And Expenditures Of The
Wichita Falls 4B Sales Tax Corporation Board Of Directors To
Include Funding Up To $50,000 For The Wee- Chi -Tah BMX Track
Project
WHEREAS, TEXAS LOCAL GOVT. CODE §501.073(a) provides "The corporation's
authorizing unit will approve all programs and expenditures of a corporation and
annually review any financial statements of the corporation," and,
WHEREAS, on or prior to this date, the Wichita Falls 4B Sales Tax Corporation
(4BSTC) approved the projects listed below as stated in its agenda.
NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY
OF WICHITA FALLS, TEXAS, THAT:
1. The Wichita Falls 4B Sales Tax Corporation's approval and funding of the
following programs and expenditures, as described above and in said corporation's
agenda, is approved:
Wee- Chi -Tah BMX Track Project, which will provide for construction of a
BMX Track at Berend's Landing at Bridge Street & Wichita Street in an
amount of up to $50,000.
2. The current fiscal year budget of the Wichita Falls 4B Sales Tax Corporation is
amended in accordance with the aforementioned expenditures.
3. The City Manager is authorized to execute all documents necessary to
effectuate the transfer and management of any funds described herein.
PASSED AND APPROVED this the 18th day of June, 2013.
(�L,
MAYOR
ATT T:
Acting City Clerk
Professional Services Agreement between the City of Wichita Fails and
CDM Smith Inc. for Engineering Services for the
River Road Wastewater Treatment Plant Reclaim Water Permitting Project
OWNER: The City of Wichita Falls; Attn: Director of Public Works, P.O. Box 1431, Wichita Palls, Texas 76307
ENGINEER: CDM Smith Inc., 8140 Walnut Hill Lane, Suite 1000, Dallas, Texas 75231
PROJECT: ENGINEER will provide reclaim water permitting professional services for the River Road Wastewater
Freatment Plant.
TIMETABLE: See Exhibit A, attached.
The ENGINEER shall not be held responsible for failure to meet the aforementioned timetables in the event that the cause
of delay is not the fault of the ENGINEER or the ENGINEER'S subcontractors.
PAYMENT:
Payment for Basic Services. OWNER asrees to pay the following for Basic Services rendered pursuant to this
contract, a total amount not to exceed S 131.590 , subject to completion of the following task phases:
a. Task 1.1 TDS Permit Limit Coordination $16,700
b. Task 1.2 DO /CBODNFlj' -N Permit Limit Coordination $39,380
C. Task 1.3 Phosphorous Modeling $40,900
d. Task I A TCEQ Meeting $4,870
e. Task 2.0 TPDF,S Major Permit Amendment $29,740
5131,590 Total
2. Payment for Additional Services. 0% NER shall pay ENGINEER for Additional Services requested and rendered as
follows:
2.1. Payment for Additional Services of Engineer rendered under this contract shall be paid for at the following rate when
supported by invoices.
Engineer /Scientist Grade X
`3230.00
Engineer. /Scientist Grade IX
$220.00
Engineer /Scientist Grade VITT
$200.00
Engineer!Scientist Grade VII
$185.00
Engineer /Scientist Grade VI
$170.00
Enguieer /Scientist Grade V
$150.00
Engineer /Scientist Grade IV
$125.00
Fntiineer /Scientist Grade 111
$110.00
Engineer./Scientist Grade 11
$95.00
Designer /Drafter
$110.00
Drafter
$80.00
Administrative
$90.00
Process /Clerical
$60.00
Mileage Expense (outside 50 mile rudius of Wichita Falls) ...... S 0.565imile (or current Federal rate)
Actual cost of materials required for the job and expenses shall be charged at cost plus 10 %.
Overnihlit Expense /person — Actual Expenses
2.2. For expenses for Additional Services, ENGINEER shall be compensated at the actual cost to ENGINEER based on
rates referenced above or as previously agreed upon in writing. Where field parties are used, expenses shall include charges
for the use of any special insnvments and equipment, including marine equipment, and expendable items such as stakes and
monuments.
CAUscrslcrawtbrdsl\Documents\1 PRO.11 -:Cr INFOMchita Falls rleuse'k013 Permitting Scope and PeeMchita Palls Agreement Engineering Services-
Reim, Permitting 6 -04 -13 Finatdir Page 1
3. 'T'imes of Pavments:
3.1. 'times oi'Paynacnt,--- t:NCiINEr,,R shall submit monthly statements, for Basic and Additional Services rendered, 1101,
Basic selviee:s, the Statements will be based upon ENUNl l R'S hours of Gvork and .vpenses completed at the time of'
billing. OWNER shall make prompt monthly payments in response to ENGINt,h:R'S montidy matemer s.
3.2. fast -due t0 p<ay 11 01811),C of ? .4- per month oil all invoiced owed aaaounts not paid awithitu
0 days of the date of the invoice. calculated from the date of the invoice. laa ,addition, ENGINEER may. after giving l0
days wriiten notice to OWNER,suspc[id scrviccs under this A(1ICenaent urriil the. F:N'GfNF ;F,R. has been paid in full all
nrxxurts due lbl- services and expenses.
OWNk.R'S REPRFSE.NTATI.VF,: Russell Schreiber, Director orPublic Works. City of Wichita halls
SERVICES ES OF ENGINEER -- F,NGINFF R shall perform professional en4.uaceriaag sea vice, as hereinatler statod which irlclyde
ctrstornary inc,iderrtal ongincerin`t scrviccs:
1. Permitting Phase. LNGIiNLTR shall:
I.T . C onsuit with 0'a .2 s A to clarify and dL4,nne OZVNEI,Z'S requirements for the Project and rMew available data.
1.2. Advise OWN' FR of the naed to provide: or obtain from others data or additional Services, and act as Olt NGR'S
representative in connection with any Such ,ery ices aequircd front others,
1 , Sce detailed sccyrc of services 4 rovide i in I,_xhibit A, luache(L
2. final Design Phase, NO I' l tiL'L)
3. Construction Administration Phase. N(-Y1 I:Sia),
a, Additional Services.
4.1 C ;caae.ral, if author aze-d in writ nil by O14 NEIL, i-'N61NFF.h shall furnish or obtain from o'thrors Additional Services of
the Iia110 ill,', types. TO (he Uxtent th.sc arddititmal ser v jces are not incladed in if.c Basic Services. they will be I>aid 1:or by
the (Ake'NI ' as Indicated in the. PAYNU N I section 0f this contract.
4.1.1. Prepnrntion of applications for govemnlental grunts, loans or advances in connection with tite Project:
preparation or review of envir_mnac-niai ,u,eslrmnts and impact statements; review of the effect oil the Project of any
su ; :h craw,rcv ?.I3, r,.,ti °a :atcr7!ants an,l doe imcnts prepared bY olli m, surf assistance ir. obtainin_ lipprovals oftatthorities
a�ua a aris° rctit an over tltcpanretp, i' uderrvirorrruc :aful impact oftheProject.
f,1.7.. services tea Inake detaiIcd investi_atiori of existin conditions or fnciluies, or to verify the rtccuracy ore r awint,�s
or other irllornw. ;oll furnished by t`rlk'Nj! R, �xc, tats, necc,sa?y fur the propQr e.sigll and construction of the Pr eajcct_
-4.1., Sc=rviecs tromsi- 11,: fic: aluchang es ill e. alentofilleProjcct :,includillo,butnot limited to, char- esuasu.r,
caraplc pity, OWNLR S schedule, or ch,aracterot construction: and revisinsp pteviou s €y accepted studies, reports, design
d�3curuer.35 01, a'untr :.et t)ocunaeuts avian such le visions are flue to ctuura k;evon,i F. i�iINFI : :R'S corarol.
4.1 for ()i' NFR'S ra3C.
4.1. -5. Prep anatiorr of.any sp,,acial reports required foot marketing of bonds.
4.1. €i. Furnishing soil and fiaundation 'tests arnd borings.
4-1,7, 1-urnishing reports and maps to establish or revise flood plain boundaries in a fbrraaat acct {rahle to I -T.MA.
4.1.8, Providing dciailed mill, shop andior laboratory inspection of materials or cgLJiprnent,
4.1.9. Invest station evolving detailed consideration of operation and maintenance expe=nses: the preparation of
_ : P t<)Jf',C"r tNt (J.A4'iclriin ta'L 4 1'crmrlGn, SCap2:rod Sec, h,clutn haltsreenawri i :¢rr,iraccrin Sere ;ces -
Reuse I'emiiMne 6-04- t i FmA doc Pigw 2
Ceasil iIily studie'3 and a1_pr sal,; aru' -- a ,issoncc in oittainim' financing" for ti', Project.
It A R ihnishirlg the services of special consr;ltants for purposes other than the normal engineering incidental to the
Proj CL and providing data or services of Tji,, types clescriNd in paragraph 3.2 when OWNER authori /,ee ENGINE ER
to provide such data o • services in lieu of O1VNER lirrnislting there. For the purposes ofthis C :ont.ract, sc! vices of a
special consultant will be alkrw:d only when the need is confirmed by the OWNEI- S RFPRI 51 -N`rA l'IVY_.
4.1 i 1. ;lppiying for permits Front all pnernmen al author ties having jtrrisdiction overthe Project and Iirrnishingsuch
approvals and consents You other; ae gnaw he ne rashly for complajoi! of the Project.
4.1. . Scrvico 10sulth" from dw award or more than one pi me cunsta for cortstrttctioix fantail cgiprnent or-
services for the Project, and sery ices resu111111� from Pte arraryin g Ar poApiance by persons otlterthan die Co rikactor
and achnhiistcrinn OWNEK'S Ior such scrrices,
4.1 13. Services in connection w A chancre urdws w reflectchtmgws regirowd by (MNER ifthe.resultingchange I1
compensation for Basic Services is not c u +rrrucn :;orate whit the chain
c in services rendered; services MICE the an.vard of
[tie Contract in evalu<tttng substitutions proposed by the Contractor MAN require awnsiwe revisions to Dnmvings and
SpvuificatAv: and swUriccs re,tllan from significant delays, chair es err price increases oceurrinq as a result of
material, , :dtripttlCllt or encrl;w shoria f.rs,
4.1.I 4. Services during out-of-town travel required of FNGINFF;R other than visitsto the site as required by Section I.
-Additional or extcin4d Services during construction shade neCeSSa.y i >y ( 1) vairk damaged by fire or other
cause during construction, (2) a ,it;nitictmt ,arranunl of detective or ne laved work of Contractor, 0) prolongation of
the cot>imy time of the Contract by mom :ban Oxy days. (4) acceleration of the prof ress schedule involve t; services
ITywid normal vvorkin�o, hoists, and or l5) dclau'.t h} Contractor.
4A it Services of Coll",irrnctmn I'hasc, such tts nrspedit ns dun:-ally gUaV rater per.oi! culled tier
in the Contract.
4.r : r. Scrvin, 4asacon..s uhant;, r f! �r(mWF Rinmylitiganon,, tublichearin„ orotlrerl 'Walor,rdrniris :r;!tivr.
Proceeding itnolvisttt the Project c.eccht as agreed tie under Basic Services,
42 A'hcnevcr the raged fiat my, ArlPOnA Sag gees, dc,crihed beech: results from env ncr;tigencc. rtli WA. owerw Wu or
usher faAlt on lhtr 11„11 OfIa:'ti(dNI d A: , the be dcenx :d to ae included in OWNEI: :S pay'n;cn's to
LNGINFLR for tlasic Sersicvs. Ally such Additio M Se Vics, not performed by LNGINLLR tha A01.1ldothrn -wise be Paid
separately by O1VN1;R shall its p,,iA for irw l :N(dNI T'lv'.
A Construction Cott :end Opinion.. of Cast. AO f I AM
GFAVI2AL COND1T10NS:
I. "fernrination OWNEK may terminate thi; A_ ree;netu yon 10 days "Hen nrrtice to FMdNHT with fire
understand n t that ak services being perforated under this cease upon the date specified in such notice. In
Oe event of early temlinmiott, ENGINIH R shat) imAce OWNER for all services completed and shall be compensated ht
all amount corrc"ponihnl.; I() the amo:utt dcsi ,nated ns cornpe Nation Ilse each phr<t.se oNhe work w1hActorily completed and
,accepted phis an ,:mount corresponding tote percent rgc of c': m k sattisfacturily completed rand subuditted to 0mle.r for any
pies. partly comoct:d un dw elhcou the of'he wwwation.
2.Ownership & Nlaintenance of Documents -011 ducwnent.s and digital files pr pared and or assembled by FNGMIAIR
under thi, h,reclnent shalt become the property ARe OWNER and shalt be daiivered to OWNI; :R without restriction on
future tree. OIVNER's re -tae of doe n;ems on future projects swill be at the sole risk of C)WN VR. 1fNCINFHA may make
copies of aq and all documents Q its tiles and reuse inki-mation contained ihercin. FNGINEFR will maintain project
records for three years aher the OWNER has made final payment to the contractor and all other pending mutters are closed
and provide copies [hereof to (AVNLIR if requited.
I Controlling; Law - =phis agreement is perfonnaNts and is to be governed by the law applicable A Wiab FAY Texas.
I'.! )01;iinicii Is' I PRt). A! V IN 1;0,\V .hi(a dash ftcasc20 11 Pcrntitnw,S';o c and Peclw4'ichits FaIis AgrQimm:t F.rlguicarmgS:rv'iccs-
Am Pennnuw &K -1 3 MAW qe 3
Solt; venue for tray action arising under III t� :roe m,:nI -dmI! he in Wichita (;oamty, Texas.
4. Assign IV, nt of CoI)tracI-- F'.NC;IN I� Iat shall not assign, sublet or transfer any rtrhts under or rntc rest in (inc htding, but
without timitations, monies that may become dttc or mortias that are du ) this :y reenrent Without the tiw ritten consent of the
other. I :nless specilically stated to rite contrary in any Nvrittcn consent to tin assiortment, no assiti -mment wil! release or
di; charge the assignor from any duty tar n2sponsibitity under this 1_arccincnt. Nothing contained in this p uammph shall
prevent PNC IN ER from emp!ovi ng indcp, ndem amsulusutts, associates, Subcoattractors, and employees to assist it in the
perfixlna nce ot'services ht:reunder.
5. No Third -Party Iletleficiaries-- NotlimL, larrcin shall he cOII, tI ucd f;; "ive any rights ar henctlts to anyone other than
OWNER and ENGINEER.
6. Indcpcndent Contractor- -In performing services tinder this agreement, 11,10 relationship between OWNER and
ENGINEER is that u1, indepeud nt contractor, and O`v1'NI R and ENGINEER by the execution of this Agreement do not
change the independent contactor status ol'!'N'GINFER. No term or proe i on of ilds agreement or act of l,.KGIN[,TR in
tie perormancc o!, this Agreement shah be construed as malting l.NC;IV'LElt or am agent, savant or cn :p(tlyee of
l `GINl I R the rent. servant or ettlployc, of O1k-'NER.
Thk, agn,cmcnt and said attachm:;nts m.iy orrly be am nded, supplement d, modified o;' canceled by a duly e- :Xecuted eNritwn
insurt;nrcrrl.
Ell c.t 1 Fla, this the t I i dt;•, of.1t I) c, 2t-) 13
OW:Vf?..R.: City ol'N1 ichita Falk., Teua:s ENGINEER: CDNII Smith Inc.
Barron 1.6kcr, City" iNlana;er SC „an L-. l.ra� +tc+�'Slnilll reside =.1t
iea(1
ATTEST: A l I'LS'I
Lycra 0zli to t y C er•k a�.nc I]ill�.ldrstini tr;� :it�e �1 to .:;er
FORM APPRC)VF;C):
Miles Rile), City Attorney
...�.c� ci�.v3'o;daD.Lo�at;nents'•,t 1'Rt_1•I1`f; I' IN *( •.wichira I ;d le. ;dcu,i��J ] ? t'crmitung Scr,pe aged Pee +14 tcltifa I�als At?;-etrttet t ; ° :ntr,i;teeri;ttr Sere "ice :a-
Reuse Pernsttul; g 6-0-4- 1 , Fm;d.doc- Page 4
Exhibit A
Scope of Services
River Road Wastewater � r` CTe,id.hnE'nt Plant `if.s'daimE. d Water Permitting
Overview
The City of Wichita Falls requires a hermit discharge from the River Road +V:astewater "I'reatrnent
Plant (tVW'I'P) to Lake Arrowhead for indirect potable reuse. This is a unique situation, with TCEQ
having permitted only one other dkcharges of comparable magnitude into a sirnilady sized lake.
Therefore, ,:vorking closely with TCKQ A arnica: to ensure project viability and success.
'This scope presents these services related to reclaimed water front the River Roan Wastewater
`I mmmerat. Plant being dKIrm l;ed into Lake Arrowhead. `l'ltc scope induces tasks as follows:
Coordination �vith "I C1;Q regarding Permit Limits
TPDES Major Perrot Amcndinunt
Coordination with TCEQ regarding permiL limits is required prior to initiating the TMAS Major
Permit Amendment Servrc.es.
1. Coordination with TCEQ regarding Permit Limits
CDM Smkh lurk been working with TCEQ Lo establish permit limits for the indirect potable reuse of
discharge from die River Road WWTP to Lake Arrowhead- The foilorwin ; Iarovides r summary of the
permit linrits fnr discharge into bake. AnTnvhr.,td that have been discussed with the TCEQ, to date:
Total dissolved solids ('1'Ds) permit limit: There have been multiple discussions with TCEQ
regarding the permit limit: for TDS, Discussions in January 2013 indicate permit limits of 778
and 7G6 inn /l, for iiisch r,goe -, of 10 ,N'IGD and 16.451 NIGD, respectively. In order to meat these
Perrnie MAW a ditfiiser A ruquired to provide dilution at lire affluent ouQU and modeling
must he con&mwd rising CORMIX to establish the necessary diffuser design. The scope of
%vorld; outline bdow its Task 1.1 to finalise the CORNM rnoclel_ i in�,lvsis..
Dissolved oxygen (DO), CBOD, and ammoniamitrogen permit limits: 'There have been
multiple discussions with 'TCEQ regarding these permit hit its. Initial discussions in 2012,
indicated a permit limit of (i mg /L DO, 5 mg /L C130D and 1 mg /L <unrnonia- nitrogen were
acceptable. TCEQ changed their position on these limits in February 2013 and stated that
more sophisticated inodehng was necessary to provide "insight into the necessary levels of
treatment to protect the water quality of the takes." Ile scope of work Is outlined below in
Task 1.2 to develop Ohs model rec lamed by TCEQ.
IIWa4 .
Phosphorus permit limits: TCEQ conducted an initial screening analysis to provide a
recommended permit limit of 0.5 mg/1 for a How of 10 MGD, '1'CI Q has stated that higher
flows may require additional nutrient limitation. Moreover, the TCEQ screening analysis may
not aderluMely address nutrient loadings and to ability to meet cPrlwoMWU a water duality
criteria at varying Inke levels. �hTorl� i - outlined under Task 1.3 to
further evaluate thc_rmhacts of nutrients on lake water dtmhW.
Task 1.1: TDS Permit Licnit _Evaluation. CDM Smith has developed a draft technical
memorandum (TM), provided in Appendix 13 of the March 2012 Ktater Reuse Feasibility Study,
summarizing the CUR MIX nwdO&g and recommended diffuser design for the River Road WWTP
discharge in order to meet TDS perrnft limits. This draft was prepared based on conversations with
TCEQ and review of their CORNI IX rnodelir :g Standard Operadng Procedures.
Using the CORNUX model, (;I M Smith will evaluate the effect of'varying lake lewe.Is and discharge of
pouver plan return How to t'i'le River Road V V,"I'I' on Lake Arrowhead TDS concentrations. In
addition, C:DNi Sra :ith twill ev:a'.riate potential for TDS accumulation over time as a result ME
discharge front the Rive- Road %,V',1'TP.
Should concurrence tw1th TCEQ not be obtaKe d for the proposed discharge location on the lake,
CDNI Sruith will conduct an evaluation of up to Mvo additional alternative outfall locations to
identify a more appropriate discharge location based on a speeffied set of criteria. 'Phis evMnatfon
twill include identification oaf Lake h;stlrynieti y distance the discharge wi] he required to extend
the bake, and required cnidill depth. CORMIX modeling twill be condr-rcted fur up to two sites to
evaluate the proposer diffuser type, sire, number of por't's, and orientation.
CDM Sinith twill finalize as TM that. summarizes the CORN'IIX modeling analysis required by TCEQ and
twill submit to TCEQ for their review. CDM Smith will address any comments received from TCEQ
based on their review to finahze diffuser deAgn concept and TDS perrnft limits,
`;cheri de: C:l),NI Smith awM Mae the CORMIX model 'I'M and analysis of'1 s accumulation within
four weeks of notice to proceed and submit to IVEQ for review. It is anticipated that'l'CEQ may take
up to four weeks to review the TM. Should TCEQ require a differentout:fall location, CDM Smith will
to re up to two weds to crvaluate alternative outfall locations and conduct additional modeling to
support the selected site. Once agreement has been reached w,ith'l'Ch.Q, CDM Smith anticipates it
twill take up to four weeks to revise the TM and obtain cmxurrence frurn TCEQ regarding the
CORMIX mooed.
1)eliVe1-rrhles: This scope 01' Work incdudm preparation of n moth Wg'1'i'vd vvr uch wi: he mibw.itted to
TCEQ electronically as well as prel :> imion of CORMIX model twhfah twill also he submitted to TC102
for their review.
Task 11: DO CBOD anti Aanmonia- Nitrogen Permit Limit Evaluation.. TCEQ has stated that
more sophisticated modeling is required to establish permit limits for DO, CBOD and ammonfa-
nitt'ogen. Two possible modeling approaches have been discussed with TCEQ: use of a complex
water duality model known as the Water Quality Analysts Simulation Program (WASP) of making
modifications to the TCEQ Continuously Stirred'l'an: Reactor (CSI'R) model.
2 1Pd2
Based on preliminary discussions wwitac TCFQ, CDM Smith recommends the second option of
mudifying the existing CSTR model because of the following reasons:
Mw discussions with TC1 Q ii dicate they feel that the CSTR approach is preferred. It should
require less effort and will ultimately result in a more straightl5u vaard too! to establish
permit limits for the River Road % -VWTP discharge.
WASP A generally applied to understand water quality dynamics throughout a lake, not for
neaohdd DD, CBOD, ammutniutrogen issue. Because it is not designed for such an
application, there are a number of numerical complexities that are of concern and could
prove to be significant obstacles in the modeling required here. There is also the potential for
We WASP model to be "over parameterized° - meaning that the number of Unknowns
exceeds our Ability to provide defendable qua ndfication of the parameters. This would
increase the uncertainty in thu results compared to die more streamlinect approach provided
by the modified CSTR: model.
This scope of work is pi esented below in Uslc 12.1. Should CD14 Srnith he unable to gain
concurrence from TCEQ mgmdkg the csm model, it may he necessary° to use a USEPAnanctioned
model, EMSP, despite the potential pitfads dcscribe:cl above. The supplemental scope of work for
the WASP modeling is presented in Task 122. Note [hat either scope of work described in Task
1,2.1 orTask 3.2.2 wih be performed, as directed by TCEQ, but not both.
TI k"! t'-KFR iylcicteli_ g
CDM Smith proposes to rnodil'y die esrtit.irr;; T 11;Q CSTR model. The proposed changes will
represent a significant. urhanwerneut to the existin;; model. They will alloww for a more accurate
representation of the impacts of the proposed discharge on lake water quality by incorporating
d4perSion and naixtng. The C 0115Cr MOd and p,ar:lrneteri7ed model wvill thence used to det( rrIlane
permit lhn,K The following outlines anticipated :steps to complete CAR mod if,cahonw
CalCnlation thief: CD1vl Sinitic prepare a calculadon brief that describes the approach to
update the CAR model. `% brief Wilt summarize the conceptual and mathematical concepts
that are being proposed. CDI +4 Smith will submit the brief to TCEQ for their review and
approval of the proposed approach. CDM Smith twill conduct phone conversations as
necessary to discuSS the brief and answer questions regarding the approach.
Model QWicahon, tiertsitrvitYAnd= and Doctimenkition: Upon approval
from TCEQ, CD NI Smith vIll pt ograrlr the nevw iciodt�l anti determine appropriate p'-wainet.ers
for the syste n). The key feature of the new model will he the inclusion of lake dispersive
mixing of At t ugeted constituents (DO, CBOL7, ,rnrrr:onia).'l`he c:urrenu TCF.Q version of the
CSTR model incorrectly assumes "plug flow" conditions for the proposed discharge,
neglecting mixing with ambient take conditions. Tlie new model will appropriately account
for the impacts of lake mixing, tvhich is believed to be significant, on near -field
concentrations. CDP4 Smith will apply the new model to recommend DO, CBOD and ammonica-
Kmgen permit Amits for the River Road I%q -VTP discharge into Lake Arrowhead. A
sensitivity analysis swill be conducted on up to three parameters to establish the model
response to calibration parameters. CD NI Smith will prepare a technical memorandum that
3 1 P a c
describes model dervelopment, applications and permit Ilmh sin ulations. It should be noted
that final permit: limits will be established by TCEQ and notCD14 Ankh.
1?caluate'rlalpacts of lake lei cl,c} �ngc on,_rl.tssnl,vc,�1 c7?yg n levels: CUM Smah swill use Be
model to evaluate up to five "what if'scenarios to assess sensitivity of simulated DQ EBOD
and ammonla-nitrogen conditions to the t''V1'VTP discharge. Scenarios will focus oil varying
lake levels and the magnitude of Be discharge. These scenarios, which may change pending
input from TCEQ and prihnhmry model results, rlaay include evaluation of the following on
dissolved oxygen lever, and potential CBOD, ammonia- nitrogen permit limits:
Ev;a ,irate rilaxinaua,n dl� l i e (up to 20 MGD) at frill lake capacity
Evalu Ite_IS NIGD discluirge at 01 ake_c olvi_ty
A Evaluate 15 I ✓IGD at [alto }Zistortc l minirnun? ca[Yaclty
A llvnln Ite 10 fv1G1] at_i The_l�3stc�r,is l_rilin,It7�ult�_ p3 it}.
TCHQ coordill dpn; After the model has been Submitted to TCEQ, any comments received
from TCEQ twill be adds °essed. It is assumed that these continents /ctuestions will be related to
specific model parameters nr assumptions and not the overall approach described in the
calculation brief.
Schedule. CDNI Smith vvill prepare the c:alcul:Ition lKefti.vtthin Four weeks of notice to proceed. It is
anticipated that TCEQ, may take up to four weeks to review the brief'. Once agreement has been
reached kvkh TCEQ on the modehn, approach, CDhI Smith anticipates it evil] take up to eight weeks
to complete model development and recommend pernlit limits.
De lir, ep1IjPs,, This scope of work includes preparation of a calculation brief which will be
stIndUed. to TCEQ electronically sis wen as an upcinte of be TCEQ CSTR model which is developed
in nlicrosoft Excel.
Assunapt:ions: This scope tof t,rork L msumes dwt 1'(:EQ approves the proposed rnetlrodolc ;, y to
incorporate dispersion /mixing into the existinH TCEQ CSTR Inodei, ShaulcI TCEQ not cc }rIrur i�4� tll
the CSTR calculation brief, an afternatWe one of wort: WJH he re(Mired to establish the permit
limits for the River € oad tV , 171 c;ischargc hj La1-e Arrc>>,• htt_ cl_t, cicscribecf in Task,__1_2.•2.,
Task 1.2,2; Supplemental Modeling, arsing WAS
If TCEQ does not approve the proposed approach in t:ae Tjslt 1.2.1 CSTR calculation brie], CD.-NI
Smith will be required to Mmulaw he entire spatial domain of the lake using WASP, evhich is tN,,PA
sanctioned software. Although likely less effective and efficient at simulating near- field DO
dynamics, the constructed WASP model may provide a valuable additional line of evidence in
analyzing various "what if' scenarios associated with Be proposed indirect potable reuse discharge
if required by TCEQ.
■ Model Scat -up and Calibration: CDNI Smith will develop a complex arul comprehensive lake
model constructed in USEPA's Water Quality Analysis Simi ation Program (GVASP). This
q P g
d o .
model will likely include a non- uniform spatial grid with a finer resolution in the near -field
vicinity of the proposed reuse water discharge and a coarser resolution for the Far -field
t.w t: on of the lake. The model AN include the key dissolved oxygen dynamics of CPsOD and
ammonia nitrification, reaeradon, and mixing. It may also include lake phytop ankton
dynamics, and resulting impacts of DO, if required by TCEQ. The model will be constructed
using the best available water quality and hydraulic data. Lastly, the model will be calibrated
using historical n7easw-ed data to the extent possible.
Evaluate Impacts of River Road WW,I'P Discharge on f _31cc and Ra�y,�N3t4t Qualit}� _CDM
Smith will use be model to evcaitrate up to five "What if" scenarios to assess sensitivity of
simulated DO, CROD and ammonia levels to discharge. Scenarios will focus on discharge
concentrations of DR CI30D and nrnmonh. These scenarios, which may change pending
input: hum TCEQ and prehmina ry model results, may include evaluation of the follotwing on
MOM oxygen levels and poterathl CI3OD, anamonin- nitrogen permit limits:
I t11i_�te ut_lrinl4n;�_ch5ch'1'fi (up to 20 MGD) it full lal c capacity
• Evaluate 15 2NIGI) discharge at 400/„ lake c 3p::3city
• F,,valuate IS 'vIGD at 20111) labs —c.z p, .ci_ty
l talh_3tc I`>�fr11t lal.c h,l5toi_ic�a! minimum capacity
Eval ate 10 14GD at I d_C]: sturi& miuir:nirn cr,p��c:ity
Modeling Documentation: A technical rnemarandum will he prepared to summarize
modeling objectives, measured data, model construction, model calibration, and scenario
analyses. This menaaraudum "11 he suHnhle for use in pen rift ng discussions with TCTQ if necessary.
S;h d_jq: CDM Smith will initiate niodel dev,elopinent only if the Task 1.2.1. calculation brief is not
approved by TCl:,Jj and the modified CSTR modeling described in 1 :ask 12.1 carmot he done. We
expect to complete the modeling within ten weeks.
Deliverables_ This scope of work indudes preparation of a technical memorandum which will be
provided to TCEQ for their review. Tlx: WASP model twill also be provided to TCGQ. for their review
and use in enablishing permit ]units.
1'aslc_1.:�:_ f?hclshlat�r u5_Et�llluahota_u >_in���i'ASP. To condfuct the phosphorus yodeling, CDM
Smith will else the Water Quality :'tnaiysis Simulation Progmm (WAS111 'Phis niodel is available in
the public donmin and has been used by I EQ to establish permit limits for dissolved oxygen and
other constituents previously. This task vein include die following steps:
Coll ate rind suntna tnr _�titSting water quality data:_..CDNI Smith will aggregate all measured
wager quality data for t:he lake as well as information regarding watershed polkaant loadings
(include direct runoff, tributariesy These date will be used to calibrate the model.
• NUM Sunup and Calibraduti: The model twill be set up to sinulate the dynamics Who Lake
Arrowhead system, including inflows, outflows, and water column pollutant concentrations
5 1 P aZ�
(focused primarily on phytoplankton, total nitrogen, and total phosphorusy Ile Model will
be calibrated to existing, historical water quality.
Evaluate Impacts of Rive.t.Ko aci llrlt'1„'r' 1)rscl.:,f,rl;c . clnJ,. <e inch
Smith Wl ae the model to evaluate cup to We "what if' scenarios to assess sensitivity of
shrulated phytoplan cton levels to introduced nutrient load. Scenarios will focus an varying
lake levels and the nmgnitude of the discharge, 'These scenarios, which may change pending
input from TCEQ and prelinrAmry model results, may incline evaluation of the impacts of the
Mowing on cfrlorvhPWH cr, phosphorus levels and potential phosphorus permit limits:
g 1 y�t,u, to rn, r )lanr cltsch it r=(ut� to 7.0 MGD) at full lake eapac'itk
a
Evaluate 15 MGD dischart)e at: X100 /6 lake alacrity
.lake ca
Ey ::ate,1'i,It;1GD aWWV0AtWQ± rninirnum capacity
Tv .lu:lte. 1.0 nlf'd) it,, too hi5too ,: %Taiinin)ismsunty,
iti'(pdW}nX:I)t }xa nt :taowA technical memorandum ,vill be prepared to surumari e
modeling olrjmOves, measuind data, model corrstruchnq model t;alihradwL and scenario
analyses. This memorandum wwill be suitable 5w use M permitting discussions with TCEQ if
necessary.
Schedule: CD14 Smith "Al initiate nwdd devio }intent upon notice to proceed and exlleets to
Complete the modeling within ten weeks.
Deliverables_ This scope of work includes preparation of a technical mernorandunt whWh will he
prnvrded to the City for their revierq am for'1 :FQ's r evKv if necessary.
A,-Ssu ijidons< This scope of vvor :< is required to understand nutrient conditioris in the. Lake;
however, the developed model wi11 be suit<_able for use w permitting discussions with TCECJ should
that he necessary.
Task l& iWeeUugmAt1i TCEQ
CDM Smith recommends that a meeting he held with TCEQ staff at the conclusion of the modeling
vvork to review findings and come to an agnxnamt on all potential per snit limits that would be
issued to OR) Diver (load M4IV Ile meeting would include up to three CDNI SmRh staff, City of
"Wita Falls : nd TCEQ staff who are responsible for establishing permA limits as well wastewater
pennHUng staff. Ile outcome of this memmg vWd he to ensure the City of Wichita Falls has a
clear path towards permitting their indirect potable discharge into Lake Awrowhead and lay the
groundwork for transitioning into Task 2, TPDIiS Major Permit: Atnendment,
2. TPDES Major Permit i'lmendttient
A Major Amendment of Permit is defined by TCEQ as follows:
61F'aPe
"Major Ameridment of Permit - Any change that is not listed in 40 CFR §122.63 (that defines
changes that be made by a minor amendment) is considered a 'Major amendment. A major
arnendnient changes a substantive term, provision, requirement, or lir UNg parameter of a permit.
This basically pertains to Page 2 of a TPDHS wastewater permit and its effluent limitations,
pollutant loadings, pollutant concentrations, monitoring requirements and frequencies. Any permit
application that seeks to modify to a less stringent permit limitation or to increase permitted
capacity, etc. Major amendment permit applications also cause the notification of affected
landowners about the proposed permit n;odification."
The permit application process l.vill involve preparing both the TlIDES administrative and technical
forms. however any analytical testing fees associated Wh this major permit amendment
application, such as the priority pollutant scan of effluentand any hio- monitoring tests that are
required are not included within this scope. We may a: =so need to work with the City to collect any
additional l:rretre<ament system d,ita that rnif;lit he regUired for thus fa(;ilit -y's' TPDE.S permit
application.
Task 11: DaW Resemxh and AcWiiSItIOIL CDNI `?initli will coridlt(a data research and
acquisition for 0101,PDh S t9ajo rAinendwentto the River Road VVWTP that involves the
Cori iirrnation of applicant information, primary contact information, public notice
ill forlliat: ion, bilingual notice. regi- drements, facility and outfall information, the designated
signatory for the apphc.itimL coordination of sampling and pollutant ana!ySls Of ti -Gated
CfIILient, and ind(IStrial l,t- etruatnwjlt prot-'rain infortn<ation.
Task 22: Map Research and Preparation. CDM Smith will perform T PDFS prog'raial map
research and rnap preparation for the production of USGS full-size and letter -size
topographic maps of Be River Road W" IT site, affected landowners map (from Appraisal
District), buffer zone may site plan, and any other required Iaaaps and figures.
Task 23: Application Fcirrn Preparation. CDM Smith Nil complete the entry of the TPDES
permit application forin information Or be core data form, .adininistrative report,
supplemental permit inforunWon form, and the technical report. At least one meeting will be
held the City of VAchitn Falls to review the (craft TPDES major amendment permit application
is included in this scope to revievv the following items.
• Bilingual Notificabon Requirements (Administrative Report);
Description of Treatment Units, �VVVJ P Flow Di<r;;rain, Buffer 'hone maps, VViCh.ita
, -%pp aisa: District A ened landor rips May (nllnical Report); and
• Pollutant Analysis of E!Wcnt, Priority Pollutant Scan of Effluent, Biomonitoring Reports
(past 5 yem.,$), l'retreatnient Program information
• Proposed t)utfall Location (Affected Landowners within one -half radius of outfall
location for lake discharges)
• Task 2A: TCEQ Staff Coordination. CDN1 Smith wM coordinate with TCEQ staff to
formulate responses to answer the gUestions posed by the applications review stafF the
municipal wastewater permitting team, water duality modeling team, water quality
7 1 P;
assessment 3114 Water Quality St lndElS As tE ?aral, the pretreatment and storm Water team, and
the Chief Clerk's Office.
Schedule: Preparation of the major amendment permit application will be completed for TCEQ
submittal within fora weeks. The estimated timeline from the beginning of permitting work (not
including the water quality modeling) to the TCEQ approval of the major amendment is estimated
to be 10 to 12 months. Thus, total project: time from Project Notice to Proceed until TCEQ approval
of the major Amendment is estimated to he 14 to 16 months.
Deliverables: 'firs scope at work MOM submitting three copies of the draft TPDES permit major
amendment application for internal (City) review. Any comments from the City will be
incorporated as appropriate, CX4 Smith will then provide and submit the River Road LL"WTP
permit: application original and three copies to the TCFQ Municipal blrastewater Permitting team
and AN provide up to three copies of the final permit application suhrnAskm to the City.
Pen it F'r1i g Fow The TPDES n now- permit amendment i iIin;_ fee of $2,050 required by the TCI.. Q
for tae submittal to thv Wastvxvatcr Pei nrittinn Section is included in our fee.
1dd tior� �t Sets rcc s not in Scol,e : Should the major amendment p rinit application become a
contested case pertnit by affected landowners, then the scrape of services will need to be amended
for work performed as addi hmwl services. Any analytical testing associated with this major permit
arnendnrent application, such as required prig d y pollutant scan of of #luent and bio- monitoring
tests, are not included in this scope.
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