NC0040266_Permit (Modification)_20050708

NPDES DOCUMENT !;CANNING COVER SHEET
NPDES Permit:
NC0040266
Knightdale Estates WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification ;
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Approval
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
July 8, 2005
This document is printed on reuse paper - ignore any
content on the rezrerse aide

L
Michael F. Easley, Govemor
State of North Carolina
Q rG William G. Ross, Jr., Secretary
' k Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
Mr. Harvey Murphrey
808 Eagle Rock Road
Wendell, North Carolina 27591
July 8, 2005
Subject: Modification of NPDES Permit
NPDES Permit NC0040266
Knightdale Estates MHP WWTP
Wake County
Dear Mr. Murphrey:
In accordance with the Settlement Agreement and Withdrawal of Petition for Case No. 04 EHR 2018,
and after considering comments on the draft permit, the Division is approving Knightdale Estates'
request for NPDES permit modification and is enclosing the revised permit pages. Please insert
these pages into your permit and discard the corresponding pages they replace. This permit is
issued pursuant to the requirements of North Carolina General Statute 143-215.1 and the
Memorandum of Agreement between North Carolina and the U.S. Environmental Protection
Agency dated May 9,1994, as revised.
Notice of the draft permit was published in The News & Observer on May 27, 2005. Mrs. Murphrey's
June 15 e-mails and June 21 letter were the only response during the 30-day comment period.
The June 21 letter asked that the permit be written to allow Knightdale Estates to resume 1/Week
monitoring as of September 21, which will mark six months of increased monitoring. Before we can
approve the change, we must first review your discharge results for that period and verify
compliance. Therefore, we are issuing the permit as drafted, and you must continue monitoring
2/Week until we issue that approval. In order to minimize your monitoring costs beyond September
21, you should submit the six months' data as soon as you have the test results. We will anticipate
your submittal and make every effort to respond promptly.
If any parts, measurement frequencies, or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within
thirty (30) days following receipt of this letter. This request must be in the form of a written petition,
conforming to Chapter 150B of the North Carolina General Statutes, and filed with the office of
Administrative Hearings, 6714 Mail Service Center, Raleigh, North Carolina 27699-6714. Unless
such a demand is made, this permit shall be final and binding.
Please take notice that this permit is not transferable except after notice to the Division of Water
Quality. The Division may require modification or revocation and reissuance of the permit.
This permit does not affect the legal requirements to obtain other permits which may be required by
the Division of Water Quality, the Division of Land Resources, the Coastal Area Management Act, or
any other federal or local governmental permit.
North Carolina Division of Water Quality
1617 Mall Service Center
Raleigh, North Carolina 27699-1617
[phone]
FAX [phone]
On the Internet at http://h2o.enr.state.nc.us/

Mr. Harvey Murphrey
Modification of NPDES Permit
NPDES Permit NC0040266
July 8, 2005
If you have any questions concerning the final permit or the requirements for your facility, please
contact Mike Templeton at [phone], extension 541, or at [e-mail].
Sincerely,
Gv`__.
1lan W. Klimek, .E.
...ADirector
Enclosure: Permit Modification, NC0040266
Copies: Raleigh Regional Office, Water Quality
Mr. Bill Reid, Wake County Department of Health
Technical Assistance and Certification Unit
NPDES Unit Files
Central Files
2

Permit No. NC0040266
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended,
Knightdale Estates MHP Limited Partnership
is hereby authorized to discharge wastewater from a facility located at
Knightdale Estates WWTP
Hodge Road (NCSR 2516)
Knightdale
Wake County
to receiving waters designated as an unnamed tributary to the Neuse River Basin in
accordance with effluent limitations, monitoring requirements, and other conditions set forth
in Parts I, II, III, and IV hereof.
This permit shall become effective August 1, 2005
This permit and authorization to discharge shall expire at midnight on ...February 28, 2008
Signed this day. July 8, 2005
Issued July 9, 2004
Modified July 8, 2005
an Klimek, P.E. Director
Division of Water Quality
By Authority of the Environmental Management
Commission

Permit No. NC0040266
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Beginning on the effective date of this permit and lasting until expiration, the Permittee is
authorized to discharge treated wastewater from Outfall 001. Such discharges shall be
limited and monitored by the Permittee as specified below:
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Flow
0.025 MGD
Continuous
Recording
E
Total Monthly Flow (MG)
Monitor and Report
Monthly
Recorded or
Calculated
E
BOD, 5-day, 20°C
(April 1- October 31)
27.0 mg/L
40.5 mg/L
2/Week 7
Grab
E
BOD, 5-day, 20°C
(November 1- March 31)
30.0 mg/L
45.0 mg/L
2/Week 7
Grab
E
Total Suspended Solids
30.0 mg/L
45.0 mg/L
2/Week 7
Grab
E
NH3 as N
(April 1- October 31)
4.8 mg/L
24.0 mg/L
Weekly
Grab
E
NH3 as N
(November 1 - March 31)
21.7 mg/L
35.0 mg/L
Weekly
Grab
E
Total Residual Chlorine2
28.0 pg/L
2/Week 7
Grab
E
Fecal Coliform
(geometric mean)
200/ 100 mL
400/ 100 mL
2/Week 7
Grab
E
pH3
2/Week 7
Grab
E
Dissolved Oxygen's
2/Week 7
Grab
E
Dissolved Oxygen's
2/Week 7
Grab
U,D
Temperature CC)
Daily
Grab
E
Temperature (°C)
2/Week 7
Grab
U,D
TKN (mg/L) 5
Monitor and Report
Monthly
Grab
E
NO3-N + NO2-N (mg/L)5
Monitor and Report
Monthly
Grab
E
Total Nitrogen (mg/L)5
Monitor and Report
Monthly
Grab
E
Total Nitrogen Load6
Monitor and Report (lb/mo)
Monthly
Calculated
E
Report (lb/yr)
Annually
Calculated
E
Total Phosphorus
Monthly
Grab
E
Notes:
1. Sample locations: E- Effluent, I- Influent, U- Upstream at least 50 feet upstream from the outfall, D-
Downstream at least 200 feet downstream from the outfall.
2. See Condition A.(3) for total residual chlorine schedule of compliance. This limit is only applicable if chlorine
or chlorine products are used in disinfection or other treatment processes.
3. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
4. The daily effluent dissolved oxygen concentration shall not be less than 5.0 mg/L.
5. For a given wastewater sample, TN = TKN + NO3-N + NO2-N, where TN is Total Nitrogen, TKN is Total Kjeldahl
Nitrogen, and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen, respectively.
6. Total Nitrogen Load is the mass quantity of Total Nitrogen discharged in a given period of time. See Special
Condition A. (2) Calculation of Total Nitrogen Loads.
7. If six months' monitoring results demonstrate that the facility has consistently complied with these permit
limits, the Permittee may request, and the Division will enact, reduction of the monitoring frequencies to
1 /Week for the remainder of the permit term.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Issued July 9, 2004
Modified July 8, 2005

KNIGHTDALE ESTATES MHP LIMITED PARTNERSHIP
808 EAGLE ROCK ROAD
WENDELL, NC 27591
919-366-2700
JUNE 21, 2005
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
MICHAEL E. TEMPLETON, P.E.
POINT SOURCE BRANCH
DIVISION OF WATER QUALITY
1617 MAIL SERVICE CENTER
RALEIGH, NORTH CAROLINA 27699-1617
SUBJECT: NPDES DRAFT PERMrr No. NC0040266
KNIGHTDALE ESTATES MHP WWTP
WAKE COUNTY
YOUR LETTER OF MAY 25, 2005
DEAR MR. TEMPLETON:
�..+ ....a+...r'.
n l'� 11 U l5 fl
jj I
L. I J U N 2 4 2005 I
L_
UE1dR - WATER QUALITY
POINT SOURCE BRANCH
SINCE WE STARTED MONITORING TWICE A WEEK ON MARCH 21, 2005, WE RESPECTFULLY
REQUEST THAT THE DRAFT MODIFICATION INCLUDE A STATEMENT THAT KNIGHTDALE ESTATES
MHP WILL BE ALLOWED TO RETURN TO THE ONCE PER WEEK MONITORING AS OF SEPTEMBER
21, 2005 IF COMPLIANCE IS DEMONSTRATED TO THAT DATE.
THANK YOU FOR YOUR ASSISTANCE.
SINCEaLY,
BETTY MPHREY
GENERAL PARTNER

Re: Fw: Knightdale Estates Permit NC0040266
Subject: Re: Fw: Knightdale Estates Permit NC0040266
From: "Mike.Templeton" <[e-mail]>
Date: Thu, 16 Jun 2005 17:06:20 -0400
To: Betty Murphrey <[e-mail]>
Mrs. Murphrey -
The permit explains the process we propose to follow to reduce your monitoring frequencies. The last footnote in
Condition A.(1.) reads:
7. If six months' monitoring results demonstrate that the facility has consistently complied with these
permit limits, the Permittee may request, and the Division will enact, reduction of the monitoring
frequencies to 1/Week for the remainder of the permit term.
You are correct that the permit does not automatically end the 2/Week monitoring after six months. That is by design, as
we must consider the possibility that some data in those months will exceed permit limits, thereby requiring that you
continue 2/Week monitoring for some period of time.
We believe the proposed approach is the quickest way to demonstrate compliance at the treatment plant so that we can
reduce your monitoring requirements - and your monitoring costs. We believe that it is consistent with our settlement of
this matter. You are certainly welcome to provide comments on the draft permit if you disagree.
Here is a bit more on how this approach is meant to work. As the draft permit says, you begin the process after six
months by sending us a written request. Your submittal should include your discharge data in addition to a letter from
you verifying compliance and requesting reduced monitoring. I must have the full six months of data before I act on your
request. If the data show consistent compliance (as we all expect), we will issue an approval letter to you, reducing the
monitoring to 1/Week. This will not require any change in the permit itself, and no public notice, so I expect to respond
promptly if your submittal is in order.
You started 2/week monitoring in late March and so will have six months of data by late September. If you submit the
request and the data right away, as proposed, I could respond as early as the end of September.
The alternative would be for DWQ to initiate the change based on our review of your DMRs. We would receive the last of
the required data with your September monitoring report, which is not due to us until mid -November. I would begin my
review in late November. This would require you to monitor 1/Week for about two months longer than we propose.
I hope this answers your question and clarifies the intent of the permit language. Please let me know if you have any
other questions on this matter.
- Mike Templeton
Betty Murphrey wrote:
Sorry, Mike, the correct date we started monitoring twice a week is March 21, 2005, as our letter of March 21, 2005,
to the Director stated. Thanks. Betty
----- Original Message -----
From: Betty Murphrey
To: Mike.Templeton
Sent: Wednesday, June 15, 2005 11:41 AM
Subject: Knightdale Estates Permit NC0040266
Dear Mike,
I need to formally respond to your May 25 letter regarding the draft permit modification, but maybe you could help
me with the verbiage.
We started monitoring twice a week on March 23, 2005 and have been compliant since then and expect to continue
to be compliant. The draft permit does not provide for our being able to discontinue this extra monitoring on
September 23 (exactly when the six months are up). Considering the length of time it takes to get things changed
with DWQ, I want to be sure that we are able to stop the extra monitoring on September 23 if we are 100%
compliant until then. As you are aware, we really should not have had to do this extra monitoring to begin with and
1 of 2 6/27/2005 12:23 PM

Re: Fw: Knightdale Estates Permit NC0040266
now we would like to get it stopped as soon as possible as it is very expensive!
What should my letter to you say that will get this accomplished?
Thank you so much for your help, Mike.
Betty Murphrey
2 of 2 6/27/2005 12:23 PM

Fw: Knightdale Estates Permit NC0040266
Subject: Fw: Knightdale Estates Permit NC0040266
From: `Betty Murphrey" <[e-mail]>
Date: Wed, 15 Jun 2005 12:00:45 -0400
To: "Mike.Templeton" <[e-mail]>
Sony, Mike, the correct date we started monitoring twice a week is March 21, 2005, as our letter of March 21, 2005, to
the Director stated. Thanks. Betty
----- Original Message
From: Betty Murphrey
To: Mike.Templeton
Sent: Wednesday, June 15, 2005 11:41 AM
Subject: Knightdale Estates Permit NC0040266
Dear Mike,
I need to formally respond to your May 25 letter regarding the draft permit modification, but maybe you could help me
with the verbiage.
We started monitoring twice a week on March 23, 2005 and have been compliant since then and expect to continue to be
compliant. The draft permit does not provide for our being able to discontinue this extra monitoring on September 23
(exactly when the six months are up). Considering the length of time it takes to get things changed with DWQ, I want to
be sure that we are able to stop the extra monitoring on September 23 if we are 100% compliant until then. As you are
aware, we really should not have had to do this extra monitoring to begin with and now we would like to get it stopped
as soon as possible as it is very expensive!
What should my letter to you say that will get this accomplished?
Thank you so much for your help, Mike.
Betty Murphrey
1 of 1 6/27/2005 12:23 PM

• 01:1f3LICNOOTIGg
• STATEOF
NORTH CAROLINA . '
• ENVIRONMENTAL'
IG�OIMiW.•
• `•1617MAIL '• ••
• . SERVICECEMTTER •
• RALEIGH, NC27699-1617
• NOTIFICATION OF •. •
• INTEANNTPISSUE.••-_
WASrEWATER PERMfr•
On the basis of thorough stay
review and application afe 1C
• General Stohrte t43.21 Pub-
lic taw 92.50Dand'otheI•lawful
standards and -regulations,.
the Korth Caratfaa'En:
mentdl Maaogement
NNational ian PolluutantDischarge
ftaer�: (NDES)wastewtdis
'charge permit to.the
45nftt�va.45dasroented h
of this notice! • .1
•Written Cortimeats regarwrg
the:prooasbdpermitmill be
accepted ubUI 30:days after
the publish da deaf this nonce.
tAll camrrmettls goyimprior'
a that date are constde1 ed in
the «par deterrr nations,re-
-Thhee. Di the promised_ permit.
or of the NC (W-
stan.of Water Guafity mar
decide to hold apubiic, m •.
frig far ihe'Praposed peFmtr
should the Divisiicn receive O'
s • Ifioant degree' pf p k
Cat+ies aFthe drift peniiit'
alter supitorting information
en fife used deteirritristoa-
dinons •preselrt in the- draft
permit are avails teupoe re,
attest + iep yducdion.
comments andfor, requests
for informal((en�p to the NCpt:
vision Of wafei:Quciity at fhb,
above*. address 'or` call the;
Point Saureea8ranch ct I919).,
733-5033; ektensio i ' 520.,
Pjaae include the NPDES
permltnumber tattachcd)in
am, 'cdrrimunioallonl• Inter-!
esleo persons may also visit'
the DiviSian of Water Ruatlb
6t 512 NC Salisbury• Sirerft
Raleigh, NG=T/6041148'be:
torten t •hours of 8:00 o:m.
apdJAOp.m..to revtewInfer
rrlapan on file. • •f
NPD>=S '•Permit: NUniber
FfCOQ40266, Knightdate •Es-
tates MHI? 808. Eagle Rack
Rood Knightdate, C:27545
has applied•for perirttt rnedl-
fl far o facility located
in Waage county and disfiarg=
rns treated Ado/pestle Ie•.
Water etc UT Reuse Rieer N
�f cdlian• River td �edu�ce
manitottng for -certif. '.p'o•
rpraetevS provided.lf the
�[ continues to'
'Virtb t n9 permit. its: . .
AFFIDAVIT OF PUBLICATION
NORTH CAROLINA.l
Wake County. ) Ss.
Before the undersigned, a Notary Public of Chatham
County North Carolina, duly commissioned and authorized to
administer oaths, affirmations, etc., personally appeared Ivy
Marsch , who, being duly sworn or affirmed, according to law,
Both depose and say that she is Billing Manager -Legal
Advertising of THE NEWS AND OBSERVER PUBLISHING
COMPANY a corporat)on organized and doing business under
the Laws of the State of North Carolina, and publishing a
newspaper known as THE NEWS AND OBSERVER, in the
City of Raleigh, County of Wake, the said newspaper in which
such notice, paper, document, or legal advertisement was
published was, at the time of each and every such publication,
a newspaper meeting all of the requirements and qualifications
of Section 1-597 of the General Statutes of North:Carolina and
was a qualified newspaper within the meaning of Section I -
597 of the General Statutes of North Carolina, and that as such
she makes this affidavit; that she is familiar with the books,
files and business of said corporation and by reference to the
files ofofsaid publication the attached advertisement for
'\I U�� c U )Ckr
was inserte in the aforesaid newspaper dates as follows:
i:174-01CntS
The above is correctly copied from the books and files of the aforesaid Corporation and publication.
Billing Manager -Legal Advertising
Sworn or affirmed to, abefore hscribed me, this
•) day of, ( Jam Q _ , 2005AD
In Testimony Whereof, I have hereunto set my hand
and affixed my official seal, the day and year aforesaid.
My commission expires I4th day of March 2009.
Z/I
U 6179£8616
.aaAaasgp pup sMaN WV 8Z:11 IZ-unr-900Z

Permit No. NC0040266
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINNATION SYSTEM
In compliance with the, provision of North Carolina, General=Statute 143-215.1, other lawful
standards and regulations `;promulgated and adopted by, the North Carolina ,nvironmental
Management Coriiinission, and .the Federal; Water Pollution Control Act, , as amended,
Knightdale Estates MAP Limited partnership
is hereby authorized to discharge wastewater from a facility located at
Bnigltdale Estates WWTP
Hodge Road (NCSR 2516)
Knightdale
Wake County
to receiving waters designated as an unnamed tributary to the Neuse River Basin in
accordance with effluent limitations, monitoring requirements, and other conditions set forth
in Parts I, II, III, and 1V hereof.
This permit shall become effective '.
This permit and authorization to'discharge shall- exp ire at, midnight on ...February 28, 2008
Signed this day, ..
DRAFT
Alan Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management
Commission

• Permit No. NC0040266
A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Beginning on the effective date of this permit and lasting until expiration, the Permittee is
authorized to discharge treated wastewater from Outfall 001. Such discharges shall be
limited and monitored by the Permittee as specified below:
! ..: , - -:---1::_,t-.:_:,-__ ..-,!.. • .- i
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0.025 MGD
Continuous
Recording
E
Total Monthly Flow (MG)
Monitor and Report
Monthly ----Calculated
Recorded or
E
(April 1- October 31)
.0.5-
270 mg/L
4 mg/L ‘.
„
2/Weel0
Grab \
E
BODovember20- March-31) °C
(N1 -„,
_ _ -- --- --
30.0 mg/L ,.
k
i
45.0 mg/L \
2/Week 7
Grab
E
Total Suspended Solids
,, \30.0,Mg/14
'45.0:1:-ng/4
2/Week, 7
\ Grab
E
NH3 as N
\ ,
(April 1- October 31) \ \
\ .rig/IL i
\ 48
4.1::li nig/L \
1,
.1
Weekly
Si
\ Grab
; \
E
(November 1 - March 3,1) 1.
21.7 mg/L ' ,
‘ . . • !,
35.0 mg/L \
: .,.
\
Weekly
Grab
\
E
Total Residual Chlorine2 \ 1
'; .', \ \
, I28.044-/I-;\
\
\ 2/Week 7
Grab
E
. . .
Fecal Conform ,
(geometric mean) \
200j100 ML \
400/100 mid\--
2/Week 7
Grab
E
pH3 ..
. , .... .--. --
„;
2/Week 7
Grab
E
Dissolved Oxygen4 "---- ....-
2/Week 7
Grab
E
Dissolved Oxygen4
2/Week 7
Grab
U,D
Temperature rC)
Daily
Grab
E
Temperature rc)
i
2/Week 7
Grab
U,D
TKN (mg/L) 5
Monitor and Report
Monthly
Grab
E
NO3-N + NO2-N (mg/L)5
Monitor and Report
Monthly-- ..... --
_._ .
Grab,
E
Total Nitrogen (mg/L)5
Monitor and Report \--
Monthly
Grab \
E
Total Nitrogen Load6
.. __-....
,... ,
Monitor and Report (lb/Mo) \,
Monthlyri_.-
-,, Calculated
E
._-_ __
Report (lb/yr) `\., ,
Annually
\ Caleplated
E
,.._- s-•-•
Total Phosphorus:
\
i \
;., '
Monthly
\ Grab
E
- .
Notes:
1. Sample locations : E- Effluent I- Infidel -it, U- Upstream at least 50 feet upstream from the oUtfall, D-
Downstream at least 200,feet 'downstream from theioutfale \ \ \
2. See Condition A (3) for total residual chlorine'schedule of compliance. This limit is onlyapplicable if chlorine
or chlorine products are Used in disinfection of -,other treatment processes
3. The pH shall not be less than 0.0 4tandarekunitknOr greater than 0,,a,stariclard units.
4. The daily effluent disgplyed oxykeri‘condentiation'Otall riot be 1ess_thail-5".0 mg/L.
5. For a given wastewater TN \-= TICIV +1NI03-N2*.NO2-N, where TN is Total Nitrogen, TKN is Total Kjeldahl
Nitrogen, and NO3-N and N00%1 are Nitrate andNitrite Nitrogen, respectively.
6. Total Nitrogen Load is the_mass quantity of Total Nitrogen discharged in a given period of time. See Special
Condition A. (2) Calculation of Total Nitrogen Loads.
7. If six months' monitoring results demonstrate that the facility has consistently complied with these permit
limits, the Permittee may request, and the Division will enact, reduction of the monitoring frequencies to
1/Week for the remainder of the permit term.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

F---igtsd_STLEAma4T-
(Si 03(3`1
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STATE OF NORTH CAROLINA IN THE OFFICE OF
ADMINISTRATIVE HEARINGS
COUNTY OF WAKE 04 EHR 2018
Kmghtdale Estates, MHP W W'1'P, )
)
Petitioner, )
1 SETTLEMENT AGREEMENT
v. ) AND WITHDRAWAL OF PETITION
)
North Carolina Department of )
Environment and Natural Resources, )
Division of Water Quality, )
)
Respondent. )
Knightdale Estates MEP WWTP (Knightdale Estates), and the North Carolina Division
of Water Quality ("DWQ") of the Department of Environment and Natural Resources,
Respondent, hereby enter into this Settlement Agreement ("Agreement") in order to resolve a
matter in controversy between them pursuant to N.C. Gen. Stat. §150B-31(b). This matter arose
out of DWQ's issuance of National Pollutant Discharge Elimination System ("NPDES") Permit
NC0040266 to Knightdale Estates. DWQ issued the NPDES Permit on July 9, 2004 and
Knightdale Estates filed a Petition for a Contested Case Hearing on November 9, 2004.
Without any hearing of fact or law in the above -styled matter, IT IS THEREFORE
AGREED BY THE PARTIES THAT:
1. In order to avoid the cost and delay of further litigation and without admitting
liability, the parties have entered into this Agreement and have agreed that all parties have been
correctly designated and that there is no question as to misjoinder or nonjoinder.

2. Petitioner will request a modification to NPDES Permit NC0040266. Petitioner
will request that it be modified to:
a. Require Petitioner to conduct monitoring for BOD, Total
Suspended Solids, total residual chlorine, fecal coliform, pH, Dissolved
Oxygen, and temperature twice per week for a period of six (6) months,
with a review of monitoring results to be conducted at the end of this
period.
b. State that if, at this review, Petitioner has demonstrated
compliance with all permit limits during this six (6) month period, then
Petitioner shall be required to conduct monitoring for these parameters
once per week for the remainder of the permit.
3. Once Petitioner has applied for the modification, Respondent will not take
enforcement action for Petitioner's failure to conduct the three times per week monitoring for
these parameters that is currently required by NPDES Permit NC0040266.
4. Prior to May 1, 2005, Respondent will issue a draft permit reflecting these
modifications. The draft permit will then be subject to the provisions of 15A NCAC 2H .0100 et
seq. relating to the approval of permits.
5. The parties agree that the consideration for this agreement is the promises
contained herein and that this Agreement contains the whole agreement between them.
6. This Agreement shall be binding upon the parties, their successors and assigns,

upon execution by the undersigned, who represent and warrant that they are authorized to enter
into this agreement on behalf of the parties hereto.
WITHDRAWAL OF PETITION
7. Entry of this Agreement serves as Petitioner's Withdrawal of its Petition for a
Contested Case Hearing in these matters. The parties agree this matter is concluded and that no
further proceedings are needed or required to resolve the contested case.
[ SIGNATURES ON NEXT PAGE ]

FOR THE DIVISION OF WATER
QUALITY
Dave Goodrich, Point Source Branch
Date:
APPROVED AS TO FORM BY:
ROY COOPER,
Attorney General
Nancy Reed Dunn
Associate Attorney General
N.C. Bar No. 31496
N.C. Department of Justice
Environmental Division
9001 Mail Service Center
Raleigh, NC 27699-1699
[phone]
[phone]/fax
Date:
FOR KNIGHTDALE ESTATES MHP
WWTP
Harvey Murphrey
Date:
MARK E. FOGEL
Mark E. Fogel
Attorney at Law
N.C. Bar No. 6151
The Raleigh Building
5 West Hargett Street, Suite 510
Raleigh, NC 27601
[phone]
[phone]/fax
Date:

Knightdale Estates MHP Limited Partnership
808 Eagle Rock Road
Wendell, NC 27591
919-366-2700
March 21, 2005
Director, Division of Water Quality
c/o Michael E. Templeton, P. E.
N C DENR
1617 Mail Service Center
Raleigh, NC 27699-1617
RE: Request for Minor Modification of NPDES Permit NC0040266
Knightdale Estates MHP WWTP
Wake County
Dear Director:
The undersigned is authorized as the General Partner of Knightdale Estates MHP
Limited Partnership, owner of Knightdale Estates MHP WWTP, Hodge Road, Knightdale,
Wake County, to request a Minor Modification of the above referenced Permit.
Specifically, the undersigned requests that the measurement frequency for BOD, 5 day,
20 degree centigrade (April 1-October 31); BOD, 5 day, 20 degree centigrade
(November 1-March 31); total suspended solids; total residual chlorine; fecal coliform,
pH; dissolved oxygen and upstream & downstream temperature measurements be
modified from three times per week to twice a week for a period of six months from
March 21, 2005 (this is the beginning date of following the modified permit). The
modified permit should further reflect that should the effluent limitations for those
parameters be met for the six-month period, the measurement frequency would be
reduced to one time per week for the remainder of the permit term.
All further Permit terms and conditions shall remain unchanged in the modified Permit.
The undersigned appreciates the Department's willingness to undertake this Permit
Modification.
7
Harvey MuYphrey, General Partner
Knightdale Estates MHP Limited Partnership

NCDENR
Mr. Harvey Murphrey
808 Eagle Rock Road
Wendell, North Carolina 27591
Michael F. Easley
Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
June 17, 2005
Subject: EAA Review
NPDES Permit NC0040266
Knightdale Estates MHP WWTP
Wake County
Dear Mr. Murphrey:
The Division of Water Quality (Division) has reviewed your Engineering Alternative Analysis (EAA) for
Knightdale Estates MHP WWTP. The Division concurs with the conclusions and recommendations of the
EAA. The EAA you have submitted is sufficient to meet the Alternative Analysis requirement of your
NPDES Permit.
If you have any questions concerning this permit, please contact me at telephone number [phone],
extension 594.
cc: Central Files
NPDES Permit File
Raleigh Regional Office / Water Quality Section
Steve Scruggs
Earth Tech
701 Corporate Center Dr., Suite 475
Raleigh, NC 27607
N. C. Division of Water Quality! NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
Internet: h2o.enr.state.nc.us
Sincerely,
Sergei Chernikov, Ph.D.
Environmental Engineer
NPDES-West
t_
Phone: [phone]
fax: [phone]
DENR Customer Service Center: 1 800 623-7748

L
1
MAY 2 4 2005
Iic ;R - V ,.iEit QUALITY j
PUiNT SOuiiC[ BRANCH
ENGINEERING ALTERNATIVE ANALYSIS
WASTE DISPOSAL ALTERNATIVES
KNIGHTDALE ESTATES MOBILE HOME PARK
WAKE COUNTY, NORTH CAROLINA
May 2005
Earth Tech of North Carolina, Inc.
701 Corporate Center Drive, Suite 475
Raleigh, North Carolina 27607
Project No. 85748
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001
TABLE OF CONTENTS
IS.
I. GENERAL INFORMATION 1
A. GENERAL 1
B. IDENTIFICATION INFORMATION 1
C. PROJECT OBJECTIVE 2
rag D. WASTEWATER FLOW RATES 2
E. EXISTING FACILITIES 3
II. DISPOSAL ALTERNATIVES 7
A. CONNECTION TO PUBLICLY OWNED TREATMENT WORKS 7
1. Description 7
2. Opinion of Probable Cost 9
3. Operation and Maintenance Cost 10
B. FUTURE AREA -WIDE SEWER SYSTEM 10
C. CONNECTION TO PRIVATELY OWNED TREATMENT WORKS 11
D. DRIP IRRIGATION LOW PRESSURE DISPOSAL 11
E. SPRAY IRRIGATION DISPOSAL 12
1. General 12
2. Descriptions 12
3. Opinions of Probable Cost 15
4. Opinion of Operation and Maintenance Costs 15
F. WASTEWATER REUSE 17
G. SURFACE WATER DISCHARGE 17
1. Description 17
2. Opinions of Probable Cost 17
3. Opinion of Probable Operation and Maintenance Cost 18
H. DISPOSAL COMBINATIONS 19
III. PRESENT WORTH ANALYSIS 19
IV. CONCLUSIONS AND RECOMMENDATIONS 21
Appendix "A" Pumping to Knightdale
Appendix "B" Land Application
Appendix "C" Existing Wastewater Treatment Plant
"" Appendix "D" Present Worth
Knightdale Estates Mobile Home Park — "Wastewater Disposal Altemative Analysis"
Earth Tech of North Carolina, Inc., Project No. 85748
May 2005

LIST OF TABLES
Table No. Description Page
1 Basic Information 2
2 Estimate of Design Flow 3
3 Existing Metered Flow Rates 3
4 Opinions Of Probable Cost, Pumping to Knightdale 9
Alternative
5 Opinions Of Probable Operation and Maintenance Costs, 10
Pumping to Knightdale
6 Opinions Of Probable Cost, Land Application 15
7 Opinions Of Probable Operation and Maintenance Costs, 16
Land Application
8 Opinions Of Probable Cost, Surface Water Discharge 18
9 Opinions Of Probable Operation and Maintenance Costs, 19
Continued Operation of Existing Wastewater Treatment
Plant
10 Summary of Costs Needed for Present Worth Analysis 20
11 Present Worth Analysis Summary 20
LIST OF FIGURES
Figure No. Description Page
1 Vicinity Map 8
2 Flow Schematic of Existing Treatment Facilities 9
3 Location Map for Pumping to Knightdale 11
Knightdale Estates Mobile Home Park — 'Wastewater Disposal Alternative Analysis"
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

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ENGINEERING ALTERNATIVE ANALYSIS
WASTE DISPOSAL ALTERNATIVES
KNIGHTDALE ESTATES MOBILE HOME PARK
GENERAL INFORMATION
A. GENERAL
The Knightdale Estates Mobile Home Park is located in eastern Wake County on
Hodge Road (SR 2516), approximately 2 miles south of the Town of Knightdale. The
entrance to the Mobile Home Park is also located approximately 0.34 miles north of the
intersection with Hodge Road (SR 2516) and Poole Road.
The park has space for 115 mobile homes of which five (5) have septic tanks and
110 discharge to the exiting wastewater treatment plant. Water is provided by two (2)
,v„r ground water supply wells. Wastewater generated by the park is treated by an existing
package treatment plant located on site.
The wastewater treatment plant has been in operation for approximately 30 years
and discharges into an unnamed tributary of the Neuse River. The treatment capacity of
the plant is 25,000 gallons per day (gpd).
B. IDENTIFICATION INFORMATION
Provided below in Table No. 1 is the basic information for the existing
wastewater treatment facilities. The location of the Mobile Home Park and existing
mit treatment facility is presented in Figure No. 1.
Knightdale Estates Mobile Home Park —"Wastewater Disposal Altemative Analysis" Page-1
1°4 Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

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Table No. 1
Basic Information
Knightdale Estates Mobile Home Park and
Existing Wastewater Treatment Plant
Item
Data
Facility Name
Knightdale Estates Mobile Home Park
County
Wake
NPDES Permit No.
NC 0040266
Permit Expiration Date
February 29, 2005
Facility Address
808 Eagle Rock Road
Wendell, North Carolina 27591
Facility Telephone No
[phone]
EAA Preparer's Name
Steve Scruggs, P.E.
EAA Preparer's Mailing Address and
Telephone No.
701 Corporate Center Drive
Suite 475
Raleigh, North Carolina 27607
[phone]
C. PROJECT OBJECTIVE
The objective of this report is to evaluate alternatives for disposal of the treated
wastewater by means other than surface water disposal. This analysis is required by the
North Carolina Division of Water Quality as part of the NPDES renewal process.
D. WASTEWATER FLOW RATES
The design wastewater flow for the disposal alternatives has been calculated to be
28,800 gallons per day. This is based on an estimated 90 mobile homes having two (2)
bedrooms and 20 having three (3) bedrooms. The remaining 5 mobile homes that are
located in the park are served by individual septic tanks. The minimum flow for a two
bedroom dwelling is 240 gpd and 120 gpd for each additional bedroom, which is in
accordance with Section 15A NCAC 2H .0219 of Division of Water Quality's
regulations. Presented below in Table No. 2 is a summary of the design flow estimate.
Presented below in Table No. 3 are the average and maximum flow rates metered
through the winter of 2004/2005. The reported average flow rate of 11,825 gpd is
considerably less than the design flow of 28,800 gpd required by the regulations.
The low flow could be contributed to the low -flow devices that are typically
installed in the newer mobile homes. The Owner reports that the all of the 3-bedroom
Knightdale Estates Mobile Home Park — "Wastewater Disposal Alternative Analysis" Page-2
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

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mobile homes have low flow faucets and water closets as do many of the 2-bedroom
units, especially the newer units.
It is not expected for the design flow rate to increase in the future since there are
no plans or available land to expand the size of the park.
Table No. 2
Estimate of Desin Flow
Description
Number
Flow per Bedroom
(gpd)
Total Flow
{gpd)
Two (2) Bedroom
90
240
21,600
Three (3) Bedroom
20
360
7,200
Totals
110
28,800
Table No. 3
Existing Metered Flow Rates
Month
����.
Average Flow
(gpd)
Maximum Flow
(gpd)
December 2004
10,900
13,900
January 2005
11,200
26,300
February
13,200
17,900
March
12,000
33,100
Average
11,825
22,800
E. EXISTING FACILITIES
The existing treatment plant is a package unit that is constructed of steel, is
buried and has a design capacity of 25,000 gallons per day (gpd). A schematic of the
treatment facilities is presented in Figure No. 2.
A manual bar screen is located at the head of the plant and has 1" openings
between the bars. The flow through the bar rack enters aeration basin.
Treatment is provided in an aeration basin having a volume of approximately
25,100 gallons. Air is provided by rotary blowers along one side on the tank, which
creates a roll that keeps the contents mixed and aerated.
Solids are allowed to settle form the effluent in the secondary clarifier. The
rectangular shaped clarifier has an approximate overflow rate of 208 gallons per day per
Knightdale Estates Mobile Home Park — "Wastewater Disposal Alternative Analysis" Page-3
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

square foot. There are dual sludge collection cones in the bottom of the clarifier. Air lift
piping is suspended to the bottom of each cone for sludge removal. The sludge is
returned to the aeration basin by way of the air lift pumps. Waste sludge can be
discharged to the digester section of the package plant. A scum baffle and v-notch weir
plate are located at the effluent end of the clarifier tank.
The effluent is disinfected by way of chlorine tablets and a contact chamber. A
four (4) chamber tablet chlorinator is used to introduce chlorine to the effluent. A
concrete contact basin provides detention time.
The effluent from the chlorine basin overflows a v-notch weir prior to entering
the creek. The effluent meter measures the depth of flow over the weir by way of a
bubblier system and records the flow rate on a strip chart.
The effluent enters the creek by way of a 6" ductile iron pipe. The outfall
distance is approximately 20 feet and is above ground.
The treatment appears to be in good condition. The effluent flow meter is
approximately 3 years old. The motors on the blowers have been rebuilt several times.
The Owner reports that he has a spare motor and blower on hand.
It is reported that the treatment plant has been in compliance for approximately
the past three (3) years. Operational problems plagued the facility prior to that time. A
new operator was hired and is reportedly managing the plant in an acceptable fashion.
Knightdale Estates Mobile Home Park — 'Wastewater Disposal Altemative Analysis" Page-4
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

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A. CONNECTION TO PUBLICLY OWNED TREATMENT WORKS
1. Description
II. DISPOSAL ALTERNATIVES
The only publicly owned wastewater collection system in the area
belongs to the Town of Knightdale. The nearest existing outfall main is located
approximately 1.9 miles to the north of the mobile home park and crosses Hodge Road
on the north side of the railroad tracks at Princeton Manor.
This alternative calls for abandoning the existing wastewater treatment
plant and pumping the daily wastewater flow to the Town of Knightdale for treatment. A
pump station and force main would be needed to pump the wastewater flow to the
existing collection system. Figure No. 3 shows the location and route of the needed
facilities. Preliminary calculations and cost estimates for this alternative have been
prepared and can be found in Appendix A.
The pump station would be located at or near the site of the existing
treatment pant. This is the lowest area of the park and the termination point of the
4g1i existing collection system. The pump station would consist of a wet well and two (2)
sewage pumps.
A 4-inch force main would be needed to transport the wastewater. The
ma+ force main would be approximately 10,000 feet in length and would be installed
northward along Hodge Road. High head losses would prevent the use of a 3-inch force
main even at 50 gpm, which is 2.5 times the average daily flow of 20 gpm.
Ise
Each pump would have a capacity of 80 gallons per minute (gpm), which
is the minimum flow to produce the minimum velocity of 2.0 feet per second (ft/s) in a 4-
inch force main. The pumping capacity of 80 gpm is 4 times the average daily design
flow of 20 gpm.
Construction obstacles with this alternative would include boring and
jacking the force main under the new Highway 64 By-pass and the railroad. Also, the
Town of Knightdale would need to obtain easements from the NC Department of
`` Transportation for the force main since private citizens can not do so.
There should not be a problem connecting to the Town of Knightdale's
collection system since their flow is being sent to the City of Raleigh for treatment. The
Owner has in the past spoken to the City of Raleigh concerning this issue and he reported
that they would accept the wastewater flow.
Knightdale Estates Mobile Home Park — `Wastewater Disposal Altemative Analysis" Page-7
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

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2. Opinion of Probable Cost
Presented below in Table No. 4 is an opinion of the probable
construction and other project costs. Technical services include design as well as
construction administration and observation.
Table No. 4
Opinions Of Probable Cost
Pumping to Knightdale Alternative
�� ,:,r
DESCRIPTIO
ES'CINIATED
COST
(2005 Dollars)
Construction Cost
Pump Station
175,000
Force Main, 4" PVC, 10,000 feet
95,000
Valves, Fittings and Air Release
25,900
Dry Bore and Jack, and Concrete Encasement
146,700
Stone Stabilization and Select Fill
20,000
Pavement Replacement
84,000
Clean up and Erosion Control
73,600
Miscellaneous
22,400
Total Construction Cost
$ 642,600
Other Project Cost
Engineering Design Services
$ 45,000
Legal and Administration
22,000
3
Construction Observation and Administration , ,
201,900
Contingency
64,000
Total Project Cost
$ 975,500
Knightdale Estates Mobile Home Park — 'Wastewater Disposal Alternative Analysis" Page-9
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

3. Operation and Maintenance Cost
The annual operating and maintenance cost have been estimated at the
design flow rate of 28,800 gpd. Presented in Table No. 5 is a summary of the probable
operating costs for pumping the wastewater to the Town of Knightdale. The power cost
was based on $0.08 per kilowatt hour and a break horsepower of 7.
The maintenance cost of the pump station includes 2 hours per day at $25
per hour to inspect, clean and maintain the pump station. The vehicle cost consists of
$300 per month while the emergency maintenance consists of $750 per month. A
contingency cost was also added to the estimate and was estimated to be 10% of the total
maintenance cost minus the sewer usage fee.
The sewer usage charge was based on the Town of Knightdale's existing
outside, residential rate of $5.00 base fee plus $4.18 per thousand gallons.
The salvage value of this alternative after 20 years is estimated to be
$488,200. There would be value in the pump wet well, pipe lines, and valves.
Table No. 5
Opinions Of Probable Operation and Maintenance Costs
Pumain2 to Knihtdale
IS
DESCRIPTION
ESTIMATED
ANNUAL COST
Electrical Costs For Pump Station
900
Maintenance Cost for Pump Station
18,200
Vehicle Cost
3,600
Emergency Maintenance
9,000
Contingency (10% of Maintenance Cost)
3,200
Sewer Usage Charge from Knightdale
10,400
Total Annual Operation and Maintenance Cost
$ 45,300
B. FUTURE AREA -WIDE SEWER SYSTEM
It is highly probable that the Town of Knightdale or the City of Raleigh would
extend sewer services to the area of the Mobile Home Park in the near future. The area
appears to be poised for dramatic growth with the soon -to -open Highway 64 By-pass that
is located approximately 1 mile north of the mobile home park. There will be an exit at
Highway 64 By -Pass and Hodge Road, which will contribute to the growth.
Knightdale Estates Mobile Home Park —'Wastewater Disposal Alternative Analysis" Page-10
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

Growth is already being experienced on Hodge Road near the 64 By-pass. Two
new subdivisions are being constructed on both sides of the railroad tracks, Princeton
Manor and Mingo Estates. Large tracks of land are for sale between those subdivisions
and the Highway 64 By-pass.
An area that is destine for major growth is located approximately 1,800 feet from
the entrance to the Mobile Home Park and is at the intersection of Poole Road and Hodge
Road. Large tracks of open land lay at the intersection of these two major through fares.
There is the Cross Creek Subdivision and the Raleigh Racket Ball Club located east of
that intersection along Poole Road.
Conservation with the Knightdale Public Works Department on March 14, 2005
indicated that there are no immediate plans to extend sewer services south along Hodge
Road. However, as growth proceeds southward, sewer services would most likely be
made available.
C. CONNECTION TO PRIVATELY OWNED TREATMENT WORKS
There are two known privately owned wastewater treatment plants in the area,
Cross Creek Subdivision and the River View Mobile Home Park. The other
developments in the area are believed to be served by septic tanks.
It is believed that there is no available capacity in either of these treatment
plants.
Ala
D. DRIP IRRIGATION LOW PRESSURE DISPOSAL
These disposal alternatives do not appear feasible due to the volume of
wastewater and unavailability of land. The Owner has stated that he does not own
additional land at the Mobile Home Park to install an alternative disposal system such as
these. A letter to this effect can be found in Appendix B.
The most prominent contiguous soil type in the area of the mobile home park is
Appling association, according to "Soil Survey, Wake County, North Carolina"
published by United States Department of Agriculture, Soil Conservation Service, 1970.
According to that publication, the Appling association is gently sloping to moderately
'°� steep, deep, well drained soils that have a subsoil of firm clay loam to clay. They were
derived mostly from granite, gneiss and schist.
0.4
The size of the septic tank and pump tank would be greater than 34,000 gallons,
each. These tank sizes are not common, thus it would take a series of septic and pump
tanks to provide the total volume required.
iso
According to Wake County's Regulations Governing Sewage Treatment and
Disposal Systems, the soil appears to fall into Soil Group III, which has a long-term
Knightdale Estates Mobile Home Park —'Wastewater Disposal Altemative Analysis" Page-11
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

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acceptance rate of 0.2 to0.1 gallons per day per square foot. At the design flow of
28,800 gallons per day and an application rate of 0.2 gpd/sqft, it would take
approximately 144,000 feet of low pressure trenches to dispose of the wastewater. This
does not seem to be manageable.
This alternative does not appear feasible and will not be considered further due
to the large size of the tanks and long laterals. Also, grease would be a problem to the
proper operation of the system.
E. SPRAY IRRIGATION DISPOSAL
1. General
There does not appear to be land readily available on which to install a a
spray irrigation system. The Owner has stated this in a letter that can be found in
Appendix B. Also, he has stated that he does not own any available land for such a
system.
Calculations and cost estimates have been prepared in as much to
determine the quantity of land that would be needed for a spray irrigation system and to
help determine if this alternative would be feasible. There are large quantities of land
near the mobile home park that are both open and have residential development. Most of
the open land appears to be prime development land, which the Owner states is not for
sale at this time. Preliminary calculations and cost estimates for this alternative have
been prepared and can be found in Appendix B.
2. Descriptions
This plan would consist of providing minimal treatment to the
wastewater and then applying the water to a tract(s) of land by spray irrigation. This
method utilizes plants, the soil surface and the soil matrix to remove many wastewater
+o► pollutants. Crops or grasses can be grown on the land, thus recycling nutrients and
reusing the water.
Basically, the treatment process will include a facultative lagoon,
disinfection, a pump station, a force main, a holding pond, and land for spray irrigation.
;am The most prominent contiguous soil type in the area of the mobile home
park is Appling association, according to "Soil Survey, Wake County, North Carolina"
published by United States Department of Agriculture, Soil Conservation Service, 1970.
According to that publication, the Appling association is gently sloping to moderately
steep, deep, well drained soils that have a subsoil of firm clay loam to clay. They were
derived mostly from granite, gneiss and schist.
Knightdale Estates Mobile Home Park — 'Wastewater Disposal Altemative Analysis" Page-12
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For preliminary design calculations, a hydraulic loading rate of 0.75 inch
per acre per week was assumed. A soil analyses would be required to determine the
actual loading rate in the event available land was found.
For the sake of this report, it is assumed land for the facultative lagoon,
holding pond and spray fields could be located within a half of a mile of the existing
treatment plant. A pump station and force main would be needed to pump the
wastewater to the treatment lagoon.
The wastewater would be treated in a facultative lagoon in order to
reduce the BOD to approximately 40 ppm. Wastewater having higher concentrations of
BOD can not be land applied without odor and vector problems. Approximately 0.44
acres of surface area would be needed for the facultative lagoon. Additional land around
the lagoon would be needed for buffer requirements. The lagoon would have a volume
of 0.86 million gallons, have a BOD loading rate of 88 pounds per acre per day, and have
a total depth of 10 feet. Of this depth, 6.0 feet is needed for treatment, 1.5 feet for sludge
storage and 2.5 feet for freeboard.
The treated wastewater would be disinfected with chlorine prior being
pumped to the holding pond. The chlorine contact basin would provide for a detention
time of 30 minutes at peak pumping rates and would be constructed of concrete. Two
basins are recommended with each sized for half of the flow rate to allow for cleaning
and maintenance. Each basin would have a volume of approximately 3,600 gallons.
The effluent would be metered prior to entering the holding pond. The
facultative lagoon and holding pond could be constructed together with common wall
construction at the spray field site. Common wall construction would be a cost saving
measure.
The total required volume of the holding pond would be 0.86 million
gallons in order to provide 30 days of storage. The lagoon would have a surface area of
0.5 acres and have a total depth of 10 feet. Of this depth, 6.0 feet is needed for storage,
1.5 feet for the prevention of weed depth at low water levels and 2.5 feet for freeboard.
Approximately 11 acres of spray fields would be needed on which to
spray the treated effluent. The acreage is based on a hydraulic loading rate of 0.75
inches per week, a nitrogen concentration of 40 mg/1 in the effluent, a crop uptake of 250
pounds of nitrogen per acre per year. The cover crops would be coastal Bermuda grass
being over seeded with winter rye.
A pump station would be needed to power the spray irrigation equipment.
A flow meter and recorder would be needed to monitor the quantity of water that is land
applied. The pump station would contain two (2) pumps with each having a capacity of
240 gpm. This flow rate would allow the average daily flow rate to be sprayed in a 2
hour period.
Knightdale Estates Mobile Home Park — 'Wastewater Disposal Altemative Analysis" Page-13
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

Farming equipment and shelters would be needed to cut and bale the
grass and to re -plug and reseed as needed
A large quantity of additional land may be needed to provide buffer
zones around the spray fields. Approximately 11 additional acres of land would be
needed to provide the required 150 foot buffer zone between the property line and the
spray fields. This brings the total land required to 22 acres for the spray field. An
exceptionally large track of land (52 acres, spray field included) would be needed to
provide the 400 foot buffer zone between the spray fields and a habitable residence or
place of public assembly.
A large quantity of additional land may be needed to provide buffer
zones around the facultative lagoon and holding pond. The two could be constructed
together on a little more than 1 acre of land. However, a total of 23 acres would be
needed to provide the 400 foot buffer zone around the lagoon and holding pond.
With the required buffers, the spray fields and lagoons could possibly
require more than 75 acres of land. Land in this growth area is estimated to cost more
than $75,000 and acre.
Knightdale Estates Mobile Home Park —*Wastewater Disposal Altemative Analysis" Page-14
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

3. Opinions of Probable Cost
Presented below in Table No. 6 is an opinion of probable cost for the
land application facility.
Table No. 6
Opinions Of Probable Cost
Land Application
J ^ 2�� "�
ZL
t
rk
I
sOa_
C
20o
.3_ .�sz'. ... ...
s� ,o..
�E+
Construction Cost
Pump Station and Force Main
256,000
Facultative Lagoon
94,800
Chlorine Basin and Metering Flume
101,800
Holding Pond
96,500
Spray Pump Station, Piping and Equipment
320,100
Farming Equipment and Storage
37,200
Emergency Generator
25,000
Electrical Construction
20,000
Total Construction Cost
$ 951,400
Other Project Cost
Engineering Design Services
$ 62,000
Legal and Administration
6,000
Construction Observation and Administration
260,000
Contingency
95,000
Land for Lagoon, Holding Pond, Spray Fields and Buffers
1,838,000
Total Project Cost
$ 3,212,400
4. Opinion of Operation and Maintenance Costs
The annual operating and maintenance cost have been estimated at the
design flow rate of 28,800 gpd. Presented in Table No. 7 is a summary of the probable
operating costs for land applying the wastewater.
The power cost was based on $0.08 per kilowatt hour and a break
horsepower of 5 for the transfer pump station and 22 for the spray field pump station.
Knightdale Estates Mobile Home Park —"Wastewater Disposal Alternative Analysis" Page-15
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

The maintenance cost of the pump station includes 2 hours per day at $25
per hour to inspect, clean and maintain the pump station. The vehicle cost consists of
$300 per month while the farm equipment was estimated to be $600 per month. The
emergency maintenance cost was estimated to be $1,500 per month. A contingency cost
was also added to the estimate and was estimated to be 10% of the total maintenance
cost.
Spray field operation cost included 16 hours per week of which 2 hours
per day was designated for spraying and the balance was used for maintenance and
mowing.
The chlorine cost was based on $0.20 per pound and a feed rate of 8 ppm.
The salvage value of this alternative after 20 years is estimated to be
$2,525,200. This includes 100% of the land cost which was estimated to be $1,838,000.
There would be value in the pump wet wells, pipe lines, valves, lagoon and holding
pond.
Table No. 7
Opinions Of Probable Operation and Maintenance Costs
Land Application of Wastewater
DESCRIPTION -
ESTIMATED
ANNUAL COST
Electrical Costs For Pump Stations
3,500
Maintenance Cost for Pump Stations
36,500
Vehicle Cost
3,600
Farm Equipment Cost
7,200
Spray Field Operation
20,800
Emergency Maintenance
18,000
Contingency (10% of Maintenance Cost)
9,000
Chlorine Cost
200
Total Annual Operation and Maintenance Cost
$ 98,800
Knightdale Estates Mobile Home Park — "Wastewater Disposal Alternative Analysis" Page-16
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

100
Inag
ink
F. WASTEWATER REUSE
This alternative does not appear feasible since there are no users of re -use water
in the area. There are no golf courses in the area that could possibly use the water for
irrigation. Also, there are no areas of decorative plantings such as can be found in
highway medians that could use the water for irrigation.
G. SURFACE WATER DISCHARGE
1. Description
This alternative calls for the continued operation of the 25,000 gpd
wastewater treatment plant and the continued discharge to the unnamed tributary of the
Neuse River. Preliminary cost estimates for this alternative have been prepared and can
be found in Appendix C.
The continued operation of the treatment plant would require the
installation of de -chlorination facilities. The current NPDES Permit has a total residual
chlorine limit of 0.028 ppm that becomes effective no later than February 1, 2006.
It is proposed to replace the tablet chlorinator with ultraviolet light
disinfection system in order to meet the new chlorine limit. The ultraviolet light system
would be installed in a concrete channel.
int
Post aeration would continue to be provided by a diffuser in the effluent
of the ultraviolet disinfection channel. Air would continue to be provided by the existing
IAA blowers.
2. Opinions of Probable Cost
""" Presented below in Table No. 8 is an opinion of probable cost for the
land application facility.
tom
PON
Knightdale Estates Mobile Home Park —'Wastewater Disposal Alternative Analysis" Page-17
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

Table No. 8
Opinions Of Probable Cost
Surface Water Discharge
__..
DES CKIPTION
ESTIMATED
COST
(2005 Dollars)
Construction Cost
Ultraviolet Light Disinfection Equipment
18,000
Excavation, Concrete, Sub -base
10,200
Piping, Fittings and Wall Sleeves
8,400
Electrical Construction
8,000
Miscellaneous
2,200
Total Construction Cost
$ 46,800
Other Project Cost
Engineering Design Services
$ 10,000
Legal and Administration
500
Construction Observation and Administration
5,000
Contingency
4,700
Total Project Cost
$ 67,000
3. Opinion of Probable Operation and Maintenance Cost
The annual operating and maintenance cost have been estimated at the
design flow rate of 28,800 gpd. Presented in Table No. 9 is a summary of the probable
operating costs for continuing operating the existing wastewater.
The power cost was based on $0.08 per kilowatt hour and a break
horsepower of 5 for the blower and 0.65 Kw for the ultraviolet disinfection. Both the
blower and UV were considered to operate 24 hours per day.
Operation of the wastewater treatment plant was estimated at 16 hours
per week at $25 per hour. Maintenance cost for the plant was estimated to be $600 per
month.
The emergency maintenance cost was estimated to be $1,500 per month.
A contingency cost was also added to the estimate and was estimated to be 10% of the
total operation and maintenance costs.
Knightdale Estates Mobile Home Park — "Wastewater Disposal Alternative Analysis" Page-18
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

There would appear to be no salvage value to the treatment after an
additional 20 years, since the plant is already over 30 years old. In 20 years the
ultraviolet disinfection equipment would have served out it life and would need
replacing.
Table No. 9
Opinions Of Probable Operation and Maintenance Costs
Existing Wastewater Treatment Plant
y,.. . ,
DESCRIPTION
ESTIMATED
ANNUAL COST
Electrical Costs For Blowers and UV Disinfection
3.100
Maintenance Cost for Wastewater Treatment Plant
7,200
WWTP Operation
20,800
Emergency Maintenance
18,000
Contingency (10% of Maintenance Cost)
4,900
Total Annual Operation and Maintenance Cost
$ 54,000
H. DISPOSAL COMBINATIONS
There does not appear to be any combinations of treatment alternatives that
would be feasible.
One possible alternative would continue to operate the treatment plant and spray
the effluent on crop land. This alternative is not feasible due to the high cost of land and
spray irrigation facilities.
III. PRESENT WORTH ANALYSIS
The feasible alternatives have been economically using the Present Worth
Analysis. A summary of the related costs for each alternative that are needed for the
analysis are presented in Table No. 10. The results of the analysis are presented below
in Table No. 11. The detailed Present Worth calculations for each alternative can be
found in Appendix D.
The current EPA Present Worth Discount Factor for the year 2004 of 5.625%
was used along with a period of 20 years.
Salvage values for pipe lines and concrete structures were calculated based on
straight line depreciation and a usable life span of 40 years. There was no salvage value
Knightdale Estates Mobile Home Park — 'Wastewater Disposal Alternative Analysis" Page-19
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

attached to the equipment since the life span for equipment is approximately 15 to 20
years. The salvage value of land was considered to be the full value of original purchase
price.
Table No. 10
Summary of Costs Needed for Present Worth Analysis
DESCRIPTION
PUMP TO
KNIGHTDALE
LAND
APPLICATION
EXISTING
WASTEWATER
TREATMENT
PLANT
Capital Cost
$ 975,500
$ 3,212,400
$ 67,000
Operation and Maintenance
Cost
45,300
98,800
54,000
Salvage Value
488,200
2,525,200
0
Table No. 11
Present Worth Analysis Summary
DESCRIPTION
PUMP TO
KNIGHTDALE
LAND
APPLICATION
EXISTING
WASTEWATER
TREATMENT
PLANT
Capital Cost
$ 975,500
S 3,212,400
$ 67,000
Present Worth of O&M
535,800
1168500
638,700
Present Worth of Salvage
Value
(163,400)
(845,200)
0
Present Worth
Value
$ 1,347,900
$ 3,535,700
$ 705,700
Difference in Presence
Worth
91%
401%
0
Knightdale Estates Mobile Home Park — 'Wastewater Disposal Alternative Analysis" Page-20
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

fail
Mel
IV. CONCLUSIONS AND RECOMMENDATIONS
The continued operation of the existing wastewater treatment plant appears to be
the most economical method of disposal of the wastewater from the Knightdale Estates
Mobile Home Park.
Pumping the wastewater to the Town of Knightdale is a feasible alternative, but
it is more expensive than operating the plant. At the present time, there are no sewer
charges to the mobile home residents. With this alternative, there would be sewer
charges that would include the cost of installing the transportation facilities plus the
sewer user fee charged by the Town of Knightdale.
Land application appears to be the most costly alternative of all. The land
application facilities and buffer zones require large quantities of land that is not readily
available. Should land become available, the cost would be prohibitive since the
facilities would be in a prime growth area where land is expensive.
It is highly probable that the Town of Knightdale or the City of Raleigh would
extend sewer services to the area of the Mobile Home Park in the near future. The area
appears to be poised for dramatic growth with the soon -to -open Highway 64 By-pass that
is located approximately 1 mile north of the mobile home park. At that time, it may be
more economical for the Mobile Home Park to abandon the treatment plant and connect
to the sewer system.
It is recommended to continue the operation of the existing treatment plant with
the continued discharge to the unnamed tributary of the Neuse River. It is also
rim recommended to install ultraviolet light disinfection facilities as soon as possible in order
to meet the February 1, 2006 deadline. Design should begin soon as there is most likely
a long lead time for obtaining the UV equipment.
A further recommendation is to revisit the issue of pumping to the Town of
Knightdale in the near future as sewer services advance southward toward the Mobile
Home Park.
Mai
Knightdale Estates Mobile Home Park — 'Wastewater Disposal Alternative Analysis" Page-21
i•n Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

GNI
fan
APPENDIX A
Pumping To Knightdale
Preliminary Calculations
Preliminary Opinions of Probable Cost
Knightdale Estates Mobile Home Park — 'Wastewater Disposal Alternative Analysis"
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

FM
PPR
MI
0.,
NMI
PIM
Mel
PIM
APPENDIX B
Land Application
Letter from Owner
Calculations
Opinions of Probable Cost
Knightdate Estates Mobile Home Park — "Wastewater Disposal Alternative Analysis"
WI
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

APPENDIX C
Existing Wastewater Treatment Plant
Opinions of Probable Cost
Knightdale Estates Mobile Home Park — 'Wastewater Disposal Alternative Analysis"
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

Mg
PIP
MR
11014
10114
11101
loin
PIM
WM
1104
PM
WI
APPENDIX D
Present Worth Analysis
Knightdale Estates Mobile Home Park —'Wastewater Disposal Alternative Analysis"
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

PN1
OW
PM
Pig
Pim
Non
aim
MIN
0111
APPENDIX A
Pumping To Knightdale
Preliminary Calculations
Preliminary Opinions of Probable Cost
Knightdale Estates Mobile Home Park — 'Wastewater Disposal Alternative Analysis"
Mil
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

PRELIMINARY DESIGN C
PROJECT:
KNIGHTDALE MOBLE HOME ESTATES
ALTERNATIVE ANALYSIS
ACTIVITY:
PROPOSED FORCE MAIN
ALCULATIONS
EARTH TECH
701 CORPORATE CENTER DRIVE
SUITE 475
RALEIGH, NC 27607
PROJECT NO.: 85748
DATA:
CAP. OF EX. PACKAGE PLANT (gpd) 25,000
TOTAL NUMBER OF MOBILE HOMES 115
TWO BEDROOM 90
THREE BEDROOM 20
ON SEPTIC TANKS 5
FLOW RATES
TWO BEDROOM DAILY FLOW (gpd) 240 (Note 1)
`on THREE BEDROOM DAILY FLOW 360
TOTAL AVERAGE DAILY FLOW (gpd) 28800
SYSTEM HEAD FLOWS (gpm)
MINIMUM FLOW (gpm) 20
FLOW RATE (2.5 X ADQ) 50
MIN FLOW RATE IN 4" FM (V=2ft/s) (gpm) 80
SYSTEM HEAD FLOW RATE 100
SYSTEM HEAD FLOW RATE 125
SUMMARY OF 4" FORCE MAIN
PIPE
FLOWS TDH TDH VELOVITY
MI (gpm) (ft) (psi) (ft/s)
20 126.4 55 0.5
50 141.7 61 1.3
80 167.6 73 2.0
100 190.4 82 2.6
SUMMARY OF 3" FORCE MAIN
WI PIPE
FLOWS TDH TDH VELOVITY
(gpm) (ft) (psi) (ft/s)
WM 20 136.8 59 0.9
50 198.3 86 2.3
80 302.7 131 3.6
1.1
100 394.6 171 4.5
Note No. 1 IN ACCORDANCE WITH 15A NCAC 2H .0219.
PRELIMINARY CALCULATIONS
Rom PUMP TO KNIGHTDALE.xls 1 5/13/2005

Pin
Pin
DESIGN CALCULA
PROJECT:
KNIGHTDALE MOBLE HOME ESTATES
ALTERNATIVE ANALYSIS
ACTIVITY:
PROPOSED FORCE MAIN
TIONS
EARTH TECH
701 CORPORATE CENTER DRIVE
SUITE 475
RALEIGH, NC 27607
PROJECT NO.: 85748
DISCHARGE HEAD
PUMP OFF ELEV.
DISCHARGE POINT
HIGH POINT
STATIC HEAD (ft)
0.+ TRY 4" FORCE MAIN
4" FORCE MAIN LOSSES
SIZE
4
4
4
4
4
rim 4
RIM
Ran
Par
Pool
HEAD LOSES
DESCRIPTION
ST. PIPE
90 ELL
45 ELL
TEE SIDE OUTLET
TEE ST. TRU
PLUG VALVE
4 CHECK VALVE
TOTAL EQ. FEET
190
200
313
123
# K EQ. FEET
10000 1 10000
8 12 96
4 6 24
1 11 11
1 7 7
4 14 56
1 25 25
10219
SYSTEM VEL.
SIZE: FLOW C: f: HL: (ft/s)
4 20 140 0.03357 3.4 0.5
4 50 140 0.18286 18.7 1.3
4 80 140 0.43626 44.6 2.0
4 100 140 0.65922 67.4 2.6
4 125 140 0.99612 101.8 3.2
SUMMARY TOTAL DYNAMIC HEAD:
SYSTEM FLOW (gpm)
20 50 80 100 125
STATIC HEAD
FORCE MAIN HL.
SYSTEM TDH
Estimated Hp
123.0
3.4
126.4
123.0
18.7
141.7
123.0
44.6
167.6
123.0
67.4
190.4
123.0
101.8
224.8
1.3 3.6 6.8 9.6 14.2
PRELIMINARY CALCULATIONS
H.► PUMP TO KNIGHTDALE.xls
2
5/13/2005

MIR
DESIGN CALCU
PROJECT:
KNIGHTDALE MOBLE HOME ESTATES
ALTERNATIVE ANALYSIS
ACTIVITY:
PROPOSED FORCE MAIN
CATIONS
EARTH TECH
701 CORPORATE CENTER DRIVE
SUITE 475
RALEIGH, NC 27607
PROJECT NO.: 85748
TRY 3" FORCE MAIN
3" FORCE MAIN LOSSES
SIZE
3
3
3
3
3
3
3
HEAD LOSES
DESCRIPTION
ST. PIPE
90 ELL
45 ELL
TEE SIDE OUTLET
TEE ST. TRU
PLUG VALVE
CHECK VALVE
TOTAL EQ. FEET
# K EQ. FEET
10000 1 10000
8 8 64
4 4 16
1 17 17
1 5 5
4 10 40
1 20 20
10162
SYSTEM VEL.
SIZE: FLOW C: f: HL: (ft/s)
3 20 140 0.13609 13.8 0.9
3 50 140 0.74133 75.3 2.3
3 80 140 1.76862 179.7 3.6
3 100 140 2.67251 271.6 4.5
3 125 140 4.03834 410.4 5.7
SUMMARY TOTAL DYNAMIC HEAD:
SYSTEM FLOW (gpm) 20 50 80 100 125
STATIC HEAD 123.0 123.0 123.0 123.0 123.0
FORCE MAIN HL. 13.8 75.3 179.7 271.6 410.4
SYSTEM TDH 136.8 198.3 302.7 394.6 533.4
Estimated Hp
1.4 5.0 12.2 19.9 33.7
PRELIMINARY CALCULATIONS
"'' PUMP TO KNIGHTDALE.xls
3
5/13/2005

PRELIMINARY COST ESTIMATES
'ROJECT:
KNIGHTDALE MHP
'ACTIVITY:
'UMP TO KNIGHTDALE
ESTIMATOR: DSS
STATUS:
PRELIMINARY
Earth Tech of North Carolina
701 Corporate Center Drive
Suite 475
Raleigh, NC 27607
PROJECT NO.:
85748
QUANTITY
'
No. Units
Unit
Per Unit
Total Cost ,
=orce Main 4" SDR PVC
10000
L.F.
$ 9.50
95,000
J.I. Fittings
3000
#
$ 3.90
11,700
1Dry Bore & Jack
800
L.F.
$ 160.00
128,000
Concrete Encased 4" D.I.
100
L.F.
$ 187.00
18,700
Clean Up
12200
L.F.
$ 2.00
24,400
!Seeding
12200
L.F.
$ 2.00
24,400
=orce Main Stone Stab.
500
TN
$ 10.00
5,000
'Driveways, Blacktop
1000
S.Y.
$ 35.00
35,000
Driveways, Gravel
1800
S.Y.
$ 5.00
9,000
Driveways, Concrete
1000
S.Y.
$ 40.00
40,000
'Plain Concrete, 2,500 psi
20
C.Y.
$ 110.00
2,200
fir Release Valve
2
EA
$ 3,000.00
6,000
plug Valve 4"
5
EA
$ 1,200.00
6,000
[Jute Netting
500
L.F.
$ 3.00
1,500
Silt Fence
3000
L.F.
$ 2.50
7,500
(3treambank Stab.
100
S.Y.
$ 50.00
5,000
!Rip Rap Lined Ditches
100
S.Y.
$ 15.00
1,500
Construction Entrances
2
EA
$ 750.00
1,500
'Temporary Check Dams
20
EA
$ 200.00
4,000
'Stream Crossing
2
EA
$ 150.00
300
Drop Inlet Protection
3
EA
$ 150.00
450
'Temporary Sediment Traps
5
EA
$ 200.00
1,000
Temporary Diversion Ditches
2000
L.F.
$ 1.00
2,000
Select Backfill
1000
C.Y.
$ 15.00
15,000
Miscellaneous
5
%
22,258
'Sub Total 467,408
Pump Station 175000
TOTAL CONSTUCTION COST
642,408
Engineering
45,000
_egal and Administrative
22,000
:,onstructin Inspect (270 cal. d) 190 Days 850
161,500
";onstructin Administration
40,375
)ontingency (10%)
65,000
TOTAL PROJECT COST
976,283
COST PUMP TO KNIGHTDALE
COST PUMP TO KNIGHTDALE.xls
Page 1 of 1
5/13/2005

aq
APPENDIX B
Land Application
Letter from Owner
pok Calculations
Opinions of Probable Cost
poi
aR
IMO
Knightdale Estates Mobile Home Park —'Wastewater Disposal Altemative Analysis"
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

FROM :HBM COMPANY
FAX NO. :919-366-2700 May. 14 2005 07:16AM P2
Knightdale Estates MHP Limited Partnership
808 Eagle Rock Road
Wendell, NC 27591
919-366-2700
May 13, 2005
To Whom It May Concern:
Re: Knightdale Estates MHP.VWT
NPDES Permit No. NC004O266
This is to advise that I do not own any additional land at or near the mobile
home park that could be used for alternative disposal methods such as land
application.
r
Also I do not know of any available land near the park that could be obtained
and used for alternative disposal methods such as land application.
If any further information is needed, please advise.
Sincerely,
Harvey' Murphrey
General Partner

r
1
2
U. S. DEPARTMENT OF AGRICULTURE
SOIL CONSERVATION SERVICE
NORTH CAROLINA AGRICULTURAL EXPERIMENT STATION
/.
GENERAL SOIL MAP
WAKE COUNTY, NORTH CAROLINA
Scale 1:253 440
1 0 1 2 3 4 Mites
I1I11 1 1 I I
—35°50'
NASH
°COUNTY
SOIL ASSOCIATIONS
Creedmoor-White Store association: Gently sloping to hilly,
deep and moderately deep, moderately well droined soils that
have a very firm clayey subsoil; derived from sandstone, shale,
and mudstone
Mayodon-Granville-Creedmoor association: Gently sloping to
moderately steep, deep or moderately deep, well -drained and
moderately well drained soils that hove o subsoil of friable
sandy•cloy loam to very firm cloy; derived from sandstone,
shale, and mudstone
Herndon-Georgeville association: Gently sloping to moderately
steep, deep, well -drained soils that hove a subsoil of friable
silty clay loom to cloy; derived from phyllite (Carolino slates)
Appling-Durhom associotion: Gently sloping to sloping, deep,
well-droined soils thot hove a subsoil of friable sandy cloy
loam to firm clay; derived mostly from granite, gneiss, and schist
Cecil-Appling association: Gently sloping to steep, deep, well -
drained soils thot hove o subsoil of firm clay loam to clay;
derived mostly from granite, gneiss, and schist
Cecil association: Gently sloping to steep deep, well -drained
sods that hove a subsoil of firm red clay; derived mostly from
gneiss and schist
Cecil -Madison association: Gently sloping to steep, deep, well-
droined soils that have a subsoil of red, friable to firm clay loom
to clay; derived mostly from gneiss and schist
Appling ossociation: Gently sloping to moderately steep, deep,
well -drained soils that have a subsoil of firm clay loom to clay;
derived mostly from granite, gneiss, and schist
Wagrom-Norfolk association: Nearly level to sloping, very deep,
somewhot excessively drained and well -drained soils that have a
subsoil of friable sandy loom to sondy clay loom; formed in
Coastal Plain sediments
Appling-Louisburg-Wedowee association: Gently sloping to steep
deep and moderately deep, well -drained and somewhat excessive)
droined soils that have a subsoil of very friable coarse sondy loa
to firm clay; derived mostly from granite, gneiss, and schist
May 1969

PRELIMINARY DESIGN CALCULATIONS
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ACTIVITY: LAND APPLICATION
EARTH TECH
701 CORPORATE CENTER DR
RALEIGH, NC 27607
ET PROJECT NO.: 85748
Septic Tank, Pump Tank and Low Pressure Pipe System
PRELIMINARY SOILS DATA
APPLING GRAVELLY SANDY CLAY
SUBSOIL FIRM CLAY LOAM TO CLAY
SOIL TEXTURE CLASSES
SOILS GROUP (USDA CLASSIFICATION)
(Ref. No. 2)
LONG TERM ACCEPTANCE
RATE (LTAR)
(gp 2)
III Fine Loams
Sandy Clay Loam
Silt Loam
Clay Loam
Silty Clay Loam
Silt
LATERAL TRENCH LENGTH
LENGTH (ft) =
TRENCH WIDTH (ft) =
DAILY FLOW
TRENCH WIDTH x LTAR
TOTAL TRENCH LENGTH (ft) =
NUMBER OF TRENCHES (ea)
LENGTH OF EACH TRENCH (ft)
SJPACING OF TREANCYH
AREA OF FIELD (ac)
1.0
144000
200
720
0.661157
Ref. No. 2: Soil Survey Wake County, US Dept. of Agriculture
.2 TO .1 (Ref. No. 1)
USE
0.2
(SITE DEPENDENT)
SEPTIC TANK
SEPTIC TANK AND LPP.xls Page 2 of 2 5/16/2005

moo
NMI
AR
pist
PEI
A,
Few
011111
PRELIMINARY DESIGN CALCULATIONS
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ACTIVITY: LAND APPLICATION
EARTH TECH
701 CORPORATE CENTER DR
RALEIGH, NC 27607
ET PROJECT NO.: 85748
Septic Tank, Pump Tank and Low Pressure Pipe System
DATA
DESIGN FLOW (mgd) =
CONSIDER LOW PRESSURE SYSTEM
SUMMARY
DESIGN DAILY USAGE (gaVday) =
MIN. SEPTIC TANK VOLUME (gal) =
VOLUME OF PUMP TANK (gal)
NITRIFICATION TRENCH
WIDTH (ft)
LENGNTH (ft)
NUMBER OF TRENCHES (ea)
LENGTH OF EACH TRENCH (ft)
REQUIRED VOLUME FOR SEPTIC TANK
DESIGN DAILY USAGE (gal/day) =
MIN. SEPTIC TANK VOLUME (gal) =
MIN. SEPTIC TANK VOLUME (gal) =
REQUIRED VOLUME FOR PUMP TANK
Required to be same as that of septic tank.
DATA
(mgd)
00 8
28,800
34,196
34,196
1.0
144000
200
720
28,800
1.17Q + 500
34196
(Ref. No. 1)
SEPTIC TANK
SEPTIC TANK AND LPP.xls
Page 1 of 2 5/16/2005

PPM
Not
Will
OM
..
PRELIMINARY DESIGN CALCULATIONS
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ACTIVITY: LAND APPLICATION
FACULTATIVE LAGOON
EARTH TECH OF NC
701 CORPORATE CENTER DR
RALEIGH, NC 27607
ET PROJECT NO.:
85748
DATA:
DESIGN FLOW (mgd) =
WASTEWATER BOD (mg/I)
AVERAGE WINTER TEMP. ©
AVERAGE SUMMER TEMP. ©
DATA
(mgd)
0.0288
160
18
27
` it DESIGN CRITERIA FOR FACULTATIVE LAGOON
DECREASE BOD TO (mg/I) 40 40 - 70 (Reff. No. 1)
DECREASE TSS TO (mg/0 30
"'°' FECAL COLIFORM (less than) 200 per 100 ml
pH BETWEEN 6 TO 9 (Reff. No. 1)
+w RECOMMENDATIONS (Reff. No. 1)
AVG. OPERATING DEPTH (ft) 4 TO 6
AVG. TOTAL RETENTION TIME (days) 31
DIVISION OF WATER QUALITY
BOD PRIOR TO HOLDING POND (mg/I) 48
TSS PRIOR TO HOLDING POND (mg/I) 48
OR
CHLORINE RESIDUAL (mg/I) 2
BAR SCREEN AND GRIT REMOVAL REQUIRED FOR ODOR
Am
SUMMARY:
NUMBER OF LAGOONS 1
BOD LOADING RATE (#/ac/d) 88.0
"" TOTAL SURFACE AREA REQD (ac) 0
TOTAL RETENTION TIME (days) 30
TOTAL VOLUME REQD (MG) 0.864
NEW LAGOON SURFACE AREA (ac) 0.44
NEW LAGOON OPERATING DEPTH (ft) 6.0
AIM SLUDGE ACCUMULATION DEPTH (ft) 1.5
FREE BOARD FOR WIND ACTION (ft) 2.5
TOTAL DEPTH (ft) = 10.0
No
Reff. No. 1: Natural Systems for Wastewater Treatment, Manual of Practice FD-16
Water Pollution Control Federation, 1990, p 168-173.
NON -AERATED FACULTATIVE LAGOON
LAND APPLICATION.xls
Page 1 of 4 5/13/2005

PIP
PR
MI
OM
PRELIMINARY DESIGN CALCULATIONS
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ACTIVITY: LAND APPLICATION
FACULTATIVE LAGOON
EARTH TECH OF NC
701 CORPORATE CENTER DR
RALEIGH, NC 27607
ET PROJECT NO.:
85748
VOLUME AND SURFACE AREA CALCULATIONS
OM PLUG FLOW MODEL
Ce =
— Co
�► Co =
Ce =
e =
OM k =
e kpt
Influent BOD5 concentration, mg/I
Effluent BOD5 concentration, mg/l
base of natural logarithms, 2.7183
first -order reaction rate, days.'
determined from Table 7.2 based on
BOD loading on surface area
t = hydraulic residence time, days
(Reff. No. 1, P 165)
160
40
2.7183
DETERMINE k FROM TABLE 7.2 AND CORRECT TO WINTER TEMPERATURE
AT WINTER TEMPERATURE (C )
KpT = 1.085(1-w-2°)
Kp20
BOD
Loading kp kpT
(#/ac/d) at 20 C at 13 C
20 0.045 0.04
40 0.071 0.06
60 0.083 0.07
80 0.096 0.08
100 0.129 0.11
18
NON -AERATED FACULTATIVE LAGOON
LAND APPLICAT1ON.xls Page 2 of 4 5/13/2005

PRELIMINARY DESIGN CALCULATIONS
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ACTIVITY: LAND APPLICATION
FACULTATIVE LAGOON
EARTH TECH OF NC
701 CORPORATE CENTER DR
RALEIGH, NC 27607
ET PROJECT NO.:
85748
REQUIRED SURFACE AREA BASED ON BOD LOADING RATE
BOD LOAD (#/d) =
38
BOD Surface
Loading Area
(#(#/a= (ac)
20 1.9
40 1.0
60 0.6
80 0.5
100 0.4
CALCULATE HYDRAULIC DETENTION TIME WITH PLUG FLOW EQUATION
DESIRED BOD =
Ce =
REMOVAL RATE (%) Co
t
(days)
Ce/Co
30
45
58
0.318
0.179
0.109
0.250
REQUIRED DETENTION TIME DURING WINTER (days) =
REQUIRED VOLUME (Mgal) =
NEW LAGOON
TOTAL REQUIRED VOLUME (Mgal) =
0.864
TOTAL SURFACE AREA REQD AT 100#/ac/d (ac)
DEPTH OF LAGOON (ft)
TOO DEEP SHOULD BE BETWEEN 4-6 FEET
0.4
6.9
30
0.864
NON -AERATED FACULTATIVE LAGOON
LAND APPLICATION.xls Page 3 of 4 5/13/2005

PR
FM
OM
OM
PIO
Rai
raill
PUT
011.,
AR
M
MI
fali
AM
NM
MR
PRELIMINARY DESIGN CALCULATIONS
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ACTIVITY: LAND APPLICATION
FACULTATIVE LAGOON
EARTH TECH OF NC
701 CORPORATE CENTER DR
RALEIGH, NC 27607
ET PROJECT NO.:
85748
NEW LAGOON (continued)
DESIRED DEPTH (ft)
RESULTING SURFACE AREA (ac)
6
0.44
RESULTING BOD LOADING RATE (#/ac/d) 88.0
TOTAL LAGOON DEPTH
SLUDGE ACCUMULATION DEPTH (ft)
DEPTH FOR TREATMENT (ft)
FREE BOARD FOR WIND ACTION (ft)
TOTAL DEPTH (ft) =
LAGOON DIMENSIONS
WATER DEPTH 6.0
SIDE SLOPE: 2
WIDTH TRY (ft) 100
LENGTH = 2 x W = 200
VOLUME (MG) = 0.75
SURFACE AREA (ac) = 0.5
1.5
6.0
2.5
10.0
NON -AERATED FACULTATIVE LAGOON
"0` LAND APPLICATION.xls
Page 4 of 4 5/13/2005

Pat
NMI
0114
WWI
Ingl
PRELIMINARY DESIGN CALCULATIONS
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ACTIVITY:
CHLORINE CONTACT BASINS
EARTH TECH
701 CORPORATE CENTER DR
RALEIGH, NC 27607
ET PROJECT NO.: 85748
DATA:
DESIGN FLOW (mgd) =
CHLORINE CONTACT TIME (min) =
PUMPING DESIGN FLOW RATE (gpm)
REQUIRED TOTAL VOLUME
REQUIRED VOLUME (gal) =
RECOMMEND No. OF BASINS
VOLUME FOR EACH BASIN (gal)
DIMENSIONS FOR EACH BASIN
CHLORINE BASIN
WIDTH (ft) =
LENGTH (ft) =
DEPTH (ft) =
RESULTING VOL (gal) =
DATA
0.029
30
240
7200
2
3,600
6.5
13
6
3,792 (vol. needed to provide time)
LAND APPLICATION.xls
Page 1 of 1
5/13/2005

PRELIMINARY DESIGN CALCULATIONS
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ACTIVITY: LAND APPLICATION
SPRAY FIELD
EARTH TECH
701 CORPORATE CENTER DR
RALEIGH, NC 27607
ET PROJECT NO.: 85748
DATA:
TOTAL WASTEWATER FLOW (mgd)
TOTAL WASTEWATER FLOW (mg per week)
INFLUENT NITROGEN CONCENTRATION (mg/I)
NITROGEN REMOVAL (%)
DESIGN NITROGEN CONCENTRATION
MINIMUM REQUIRED STORAGE (days)
SUMMARY BASED ON HYDRAULIC LOADING
REQUIRED LAND
REQ'D LOADING
AREA RATE
(ac) (in/ac/wk)
DATA
0.0288
0.202
20
15
17
30
11 0.75 (Note No. 2)
Ref. No.1
Ref. No. 1: "Wastewater Ekngineering Treatment, Disposal, and Reuse" Thire Edition, Metcalf & Eddy, Inc.
McGraw-Hill Publishing Co.,1991, p.170.
Note No. 2 Application rate is assumed
SPRAY FIELD
LAND APPLICATION.xls
Page 1 of 3
5/13/2005

PRELIMINARY DESIGN CALCULATIONS
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ACTIVITY: LAND APPLICATION
SPRAY FIELD
EARTH TECH
701 CORPORATE CENTER DR
RALEIGH, NC 27607
ET PROJECT NO.: 85748
REQUIRED FIELD AREA
Area based on the largest land requirement for either nitrogen loading or
on hydraulic loading rate.
DETERMINE FIELD AREA REQUIRED BASED ON HYDRAULIC APPLICATION
WW FLOW = LOADING DEPTH x FIELD AREA x 365 - S
365
WW FLOW = (acre -inches / week) 7.4
LOADING DEPTH = (in/ac/wk) 0.75
FIELD AREA = (ac) ?
S (days) = Min. Required Storage Capacity 30
AREA IN SPRAY FIELD
NITROGEN LOADING RATE
L (ft/yr) = N
2.7 x C
L (ft/yr) = Annual Liquid Loading
C (mg/l) = Total Nitrogen Concentration
N (#/ac/yr) = Crop Nitrogen Uptake
L (ft/yr) = Annual Liquid Loading =
SPRAY FIELD
AREA
REQ'D
(ac)
11
C (mg/l) =
17
N (#/ac/yr) = 250
Coastal Bermuda overseeded with
Winter Rye
5.4
For Coastal Bermuda Grass
Nitrogen Uptake Ranges 350 -600
For Rye Grass
Nitrogen Uptake Ranges 180 - 250
+�+ LAND APPLICATION.xls
Page 2 of 3
5/13/2005

PRELIMINARY DESIGN CALCULATIONS
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ACTIVITY: LAND APPLICATION
SPRAY FIELD
EARTH TECH
701 CORPORATE CENTER DR
RALEIGH, NC 27607
ET PROJECT NO.: 85748
FIELD AREA = WW FLOW (acre -inches per week)
LOADING DEPTH (inches per week)
x 365
365
S (days) = Min. Required Storage Capacity
S (days) = 30
WW FLOW (acre -inches per week) = 7.4
LOADING DEPTH (inches per week) = 1.26
FIELD AREA (acres) = 6
CONCLUSIONS: HYDRAULIC APPLICATION RATE IS LIMITING FACTOR.
SPRAY FIELD
LAND APPLICATION.xls
Page 3 of 3
5/13/2005

PRELIMINARY DESIGN CALCULATIONS
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ACTIVITY: LAND APPLICATION
EARTH TECH
701 CORPORATE CENTER DR
RALEIGH, NC 27607
ET PROJECT NO.:
85748
DATA:
fast
DESIGN FLOW (mgd) =
AVG. TOTAL RETENTION TIME (days)
REQUIRED VOLUME
TOTAL VOLUME (million gals) = 0.864
run NUMBER OF LAGOONS
VOLUME PER EACH LAGOON (million gallons) =
LAGOON DIMENSIONS
DATA
0.0288
30
WATER DEPTH 6
SIDE SLOPE: 2
WIDTH TRY (ft) 106
LENGTH=2xW= 212
VOLUME (MG) = 0.85
SURFACE AREA (ac) = 0.52
TOTAL LAGOON DEPTH
MIN. WD TO PREVENT WEED GROWTH (ft)
DEPTH FOR STORAGE(ft)
FREE BOARD FOR WIND ACTION (ft)
TOTAL DEPTH (ft) =
HOLDING POND
LAND APPLICATION.xls
Page 1 of 1
(May be reduced upon
development of hydrologic
budget)
1
0.86
1.5
6.0
2.5
10.0
5/13/2005

PRELIMINARY DESIGN CALCULATIONS
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ACTIVITY: LAND APPLICATION
EARTH TECH
701 CORPORATE CENTER DR
RALEIGH, NC 27607
ET PROJECT NO.: 85748
DATA:
DESIGN FLOW (mgd) =
SPRAY FIELD PUMP STATION
PUMPING (hrs/day)
FLOW RATE
DATA
0-
2
240 USE (gpm) 240
ESTIMATED TDH
PRESSURE FOR NOZZLES (psi)
ELEVATION LIFT (ft)
HEAD LOSSES
SIZE
DESCRIPTION
60
15
# K EQ. FEET
6 ST. PIPE
6 90 ELL
6 45 ELL
6 TEE SIDE OUTLET
6 TEE ST. TRU
6 PLUG VALVE
6 CHECK VALVE
TOTAL EQ. FEET
SYSTEM
SIZE: FLOW C:
4000
2
2
2
6
6
1
1
30
15
55
20
40
75
4000
60
30
110
120
240
75
4635
VEL.
f: HL: (ft/s)
6 240 120
SUMMARY TOTAL DYNAMIC HEAD:
SYSTEM FLOW (gpm)
ELEVATION DIFF.
SPRAY NOZZLES
FORCE MAIN HL.
SYSTEM TDH
HORSEPOWER
PUMP STATIONS
fm+ LAND APPLICATION.xls
Page 1 of 1
0.615885
240
15.0
139
28.5
182.1
22
28.5 2.7
5/13/2005

SUMMARY OF PRELIMINARY COST ESTIMATES
PROJECT:
ESTIMATOR:
PROJECT NO.
KNIGHTDALE ESTATES MOBILE HOME PARK
• DSS
85748
WW ALTERNATIVE ANALYSIS
STATUS OF DESIGN:
ACTIVITY:
PER
TOTAL
DESCRIPTION
COST
LAND APPLICATION FACILITIES
PUMP STATION & FORCE MAIN TO LAGOON
255,976
FACULATIVE LAGOON
94,830
CHLORINE BASIN
62,192
PARSHALL FLUME
39,575
HOLDING POND
96,495
EQUIPMENT SHED
12,000
SPRAY PUMP STATION
150,000
SPRAY EQUIPMENT
76,279
SPRAY FIELD TRUNK PIPING
93,853
FARMING EQUIPMENT
25,200
EMERGENCY GENERATOR
25,000
ELECTRICAL CONSTRUCTION
20,000
TOTAL CONSTRUCTION COST
951,399
Engineering
62,000
Legal and Administrative
6,000
Constructin Inspection (365 calendar days) 260
work days
208,000
Constructin Administration
52,000
Contingency (10%)
95,000
Land for WWTP (ac & $/ac)
23 75000
1,725,000
Land for Spray Fields (ac & $/ac)
52 75000
113,000
TOTAL PROJECT COST
3,212,399
COST SUMMARY
LAND APPLICATION COST.xls
rim 1 5/13/2005

LROJECT:
PRELIMINARY COST ESTIMATES
KNIGHTDALE MHP
ACTIVITY:
DUMP TO LAGOON AT SPRAY FIELD
ESTIMATOR: DSS
Earth Tech of North Carolina
701 Corporate Center Drive
Suite 475
Raleigh, NC 27607
PROJECT NO.: 85748
SITE
STATUS:
PRELIMINARY
- y
�
�' '' • j '
.r.. -;
A<a;� e". R
4`d. y%9
'^�"��« •
.,
fi i r
..
...
ryu 4
�.:�,Y� :
it-
i"..,M Y . —
..R .5..✓Y. W...:...� `5.,
'X.n �� .Ln-�wf"�`�+ .I9 '.`,.
� fy^ 1^i'i�Q(•
OLTi.•. --�.c.c+.cx r � xis ;h; -.,, �« ..�,
., s._
...�',r..�a-..a
..,y 3
■
:ir
.;t5. ti`�'��':::. .x
r .�ce�.. i �^...
.'�
:...
�&
c
,e,e
e,,..: ��k
(1.e'.
.x �4x : :.. r . ,
orce Main 4" SDR PVC
2000
L.F.
$ 9.50
19,000
),I. Fittings
800
#
$ 3.90
3,120
Dry Bore & Jack
60
L.F.
$ 160.00
9,600
.,oncrete Encased 4" D.I.
0
L.F.
$ 187.00
0
:lean Up
2000
L.F.
$ 2.00
4,000
JSeedinq
2000
L.F.
$ 2.00
4,000
=orce Main Stone Stab.
100
TN
$ 10.00
1,000
driveways, Blacktop
200
S.Y.
$ 35.00
7,000
riveways, Gravel
200
S.Y.
$ 5.00
1,000
Driveways, Concrete
200
S.Y.
$ 40.00
8,000
Plain Concrete, 2,500 psi
5
C.Y.
$ 110.00
550
it Release Valve
2
EA
$ 3,000.00
6,000
'lug Valve 4"
2
EA
$ 1,200.00
2,400
Netting
100
L.F.
$ 3.00
300
ilsJute
ilt Fence
1000
L.F.
$ 2.50
2,500
Streambank Stab.
0
S.Y.
$ 50.00
0
Rip Rap Lined Ditches
100
S.Y.
$ 15.00
1,500
.,onstruction Entrances
2
EA
$ 750.00
1,500
Temporary Check Dams
10
EA
$ 200.00
2,000
Stream Crossing
0
EA
$ 150.00
0
Drop Inlet Protection
1
EA
$ 150.00
150
Temporary Sediment Traps
2
EA
$ 200.00
400
Temporary Diversion Ditches
100
L.F.
$ 1.00
100
Select Backfill
200
C.Y.
$ 15.00
3,000
Miscellaneous
5
%
3,856
ub Total
80,976
Dump Station
175000
I TOTAL CONSTUCTION COST
255,976
Ftwil
PUMP & FM TO LAGOON
FaR LAND APPLICATION COST.xls
Pagel of 1
5/13/2005

PRELIMINARY COST ESTIMATES
IRROJECT:
!ESTIMATOR:
DSS
EARTH TECH OF NC
701 CORPORATE CENTER DR
RALEIGH, NC 27607
ET PROJECT NO.:
85748
:NIGHTDALE ESTATES MOBILE HOME PARK
1.WW ALTERNATIVE ANALYSIS
CTIVITY:
STATUS:
PRELIMINARY
,..
... . )• l�, • �iSis-i.U' iplX
, �
T. Ti;'.F•'Yi^ kll • q ` e
1_ .ry1Y1'i
�.E NtL "` M `�i
iz;
,_ :74
rCi �5 ,
y 7.J
emi
S
Funk Main 6" PVC
4000
L.F.
$ 10
40,000
),I. Fittings
2000
#
$ 4
7,800
Gate Valve 6"
3
EA
$ 500
1,500
orce Main Stone Stab.
500
TN
$ 10
5,000
;oncrete Blocking
5
CY
$ 350
1,750
Monitoring Wells
5
EA
$ 7,000
35,000
iscellaneous
5
%
2,803
TOTAL
93,853
FITTING WEIGHTS
Jim
;x 6 TEE
dx90
"UB-TOTAL
5% MISC
TOTAL
No.
10
5
FITTING
WEIGHT
TOTAL
WEIGHT
0
125 1250
85 425
1675
251.25
1926.25

illiiiiiiiiiiii
PRELIMINARY COST ESTIMATES
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ACTIVITY:
FACULATIVE LAGOON
ESTIMATOR:
DSS
ET PROJECT NO. 85748
STATUS OF DESIGN:
PER
QUANTITY
DESCRIPTION
UNIT
MATERIAL COST
LABOR COST
TOTAL
UNIT 1 TOTAL
UNIT 1 TOTAL
COST
PER LAGOON
REMOVAL OF TOPSOIL (5000' HAUL) 710 Cy 0 0 3.51 2491.632 2,492
EXCAVATION (5000' HAUL) 7682 Cy 0 0 3.51 26964.08 26,964
CLAY LINER MATERIAL 197 50# BAG 13.6 2675 2 393.3727 3,068
LINER COMPACTION 1229 Cy 0 0 1 1229.29 1,229
GRASSING AROUND LAGOON 0.7 1K/SqFt 65 46.8 20 14.4 61
HEAD WALL AT EFFLUENT W/SLIDE GATE 2 Ea 5000 10000 1500 3000 13,000
HEAD WALL AT INFLUENT W/SLIDE GATE 2 Ea 5500 .11000 1500 3000 14,000
PIPING 1 Ls 5000 5000 2500 2500 7,500
ULTRASONIC LEVEL AND RECORDER 2 Ea 9500 19000 1500 3000 22,000
Miscellaneous (5%) 4,516
CONSTRUCTION COST 94,830
FACULALTIVE LAGOON
LAND APPLICATION COST.xls
1
5/13/2005

l 1 I 1 1 1 1 1 1 1 1 1 1
PRELIMINARY QUANTITY ESTIMATES
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ACTIVITY:
FACULATIVE LAGOON
ESTIMATOR:
DSS
ET PROJECT NO. 85748
STATUS OF DESIGN:
PER
LAGOON DATA
REMOVAL OF TOPSOIL
CLAY FILL VOLUME
FACULALTIVE LAGOON
LAND APPLICATION COST.xls
SURFACE AREA (ac)
STORAGE WIDTH
STORAGE LENGTH
SLOPE (H:1' VERT)
FREEBOARD
STORAGE DEPTH
SLUDGE DEPTH
TOTAL DEPTH
(CALCULATED) TOP WIDTH
TOP LENGTH
BOTTOM WIDTH
BOTTOM LENGTH
SURFACE AREA (ac)
DEPTH (ft)
VOLUME REMOVED (cy)
DEPTH OF FILL (ft)
BOTTOM (cy)
SIDE WALLS (cy)
TOTAL VOLUME
BENTONITE AT 10% ADDITION
50 lb BAGS AT 0.625 CY
0.44
100
200
2
2.5
7
1.5
11
110
210
94
194
0.44
1
710
1
675
554
1229
123
197
2 5/13/2005

1 1 I 1 I 1 1 1 1 1 1 1 1 1 1 1 1 1
PRELIMINARY QUANTITY ESTIMATES
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ACTIVITY:
FACULATIVE LAGOON
ESTIMATOR:
DSS
ET PROJECT NO. 85748
STATUS OF DESIGN:
PER
GRASSING AROUND TOP OF LAGOON
EXCAVATION
FACULALTIVE LAGOON
LAND APPLICATION COST.xls
GRASSING WIDTH (ft)
AREA (sqft)
VOLUME (cy)
20
720
7682
3 5/13/2005

1 1 1 1 1 1 1 1 1 1 1 1
PRELIMINARY COST ESTIMATES
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ACTIVITY:
CHLORINE CONTACT BASIN
ESTIMATOR:
DSS
ET PROJECT NO.
85748
STATUS OF DESIGN:
PER
UNIT
MATERIAL
COST
LABOR COST
TOTAL
DESCRIPTION
QUANTITY
UNIT
I TOTAL
UNIT I
TOTAL
COST
CONCRETE
EXCAVATION, BACKFILL & COMPACTION
HANDRAILS
PIPING
WALL SLEEVE
GRAVEL SUB -BASE
CHLORINE STORAGE AND FEED
48 Cy
209 Cy
52 Lf
100 Lf
2 Ea
62 Tn
1 Ls
300 14484.17
0 0
13 676
35 3500
1200 2400
4 246.75
15000 15000
250
10
6
20
600
4
5000
12070.14
2094.444
312
2000
1200
246.75
5000
26554
2094
988
5500
3600
494
20000
Miscellaneous (5%)
TOTAL CONSTRUCTION COST
2962
62192
CHLORINE BASIN
LAND APPLICATION COST.xls
1 5/13/2005

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 II 1
PRELIMINARY COST ESTIMATES
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ACTIVITY:
EFFLUENT PARSHALL FLUME
ESTIMATOR:
DSS
PROJECT NO. 85748
STATUS OF DESIGN:
PER
QUANTITY
DESCRIPTION
UNIT
MATERIAL COST
UNIT I TOTAL
LABOR COST
UNIT I TOTAL
TOTAL _
COST
CONCRETE 20 Cy 300 6000 250 5000 11000
EXCAVATION, BACKFILL & COMPACTION 100 Cy 0 0 10 1000 1000
HANDRAILS 80 Lf 13 1040 6 480 1520
ULTRASONIC LEVEL 1 Ea 5000 5000 500 500 5500
CIRCULAR CHART RECORDERS 1 Ea 4500 4500 1000 1000 5500
PIPING 50 Lf 65 3250 20 1000 4250
WALL SLEEVE 2 Ea 1800 3600 600 1200 4800
FLUME THROAT 1 Ls 3000 3000 1000 1000 4000
GRAVEL SUB -BASE 15 Tn 4 60 4 60 120
Miscellaneous (5%) 1885
TOTAL CONSTRUCTION COST 39575
PARSHALL FLUME
LAND APPLICATION COST.xls
1 5/13/2005

1 1 II B II 1 1 1 1 II 1
PRELIMINARY COST ESTIMATES
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ACTIVITY:
HOLDING PONDS
ESTIMATOR:
DSS
ET PROJECT NO. 85748
STATUS OF DESIGN:
PER
QUANTITY
DESCRIPTION
UNIT
MATERIAL COST
LABOR COST
TOTAL
UNIT I TOTAL
UNIT I TOTAL
COST
PER LAGOON
REMOVAL OF TOPSOIL (5000' HAUL) 903 Cy 0 0 3.51 3171.168 3,171
EXCAVATION (5000' HAUL) 7873 Cy 0 0 3.51 27632.8 27,633
CLAY LINER MATERIAL 207 50# BAG 13.6 2821 2 414.8181 3,236
LINER COMPACTION 1296 Cy 0 0 1 1296.307 1,296
GRASSING AROUND LAGOON 0.8 1K/SqFt 65 49.14 20 15.12 64
HEAD WALL AT EFFLUENT W/SLIDE GATE 2 Ea 5000 10000 1500 3000 13,000
HEAD WALL AT INFLUENT W/SLIDE GATE 2 Ea 5500 11000 1500 3000 14,000
PIPING 1 Ls 5000 5000 2500 2500 7,500
ULTRASONIC LEVEL AND RECORDER 2 Ea 9500 19000 1500 3000 22,000
Miscellaneous (5%) 4,595
CONSTRUCTION COST PER LAGOON
NUMBER OF HOLDING PONDS 1 Ea
96,495
96,495
HOLDING POND
LAND APPLICATION COST.xls
1
5/13/2005

1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1
QUANTITY ESTIMATES
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ESTIMATOR:
DSS
ET PROJECT NO.
85748
STATUS OF DESIGN:
PER
ACTIVITY:
HOLDING PONDS
I
j I
I
LAGOON DATA
REMOVAL OF TOPSOIL
EXCAVATION
CLAY FILL VOLUME
HOLDING POND
LAND APPLICATION COST.xls
SURFACE AREA (ac)
STORAGE WIDTH
STORAGE LENGTH
SLOPE (H:1' VERT)
FREEBOARD
STORAGE DEPTH
SLUDGE DEPTH
TOTAL DEPTH
0.56
106
212
2
2.5
6
1.5
10
(CALCULATED) TOP WIDTH 116
TOP LENGTH 222
BOTTOM WIDTH 100
BOTTOM LENGTH 206
SURFACE AREA (ac) 0.56
DEPTH (ft) 1
VOLUME REMOVED (cy) 903
VOLUME (cy) 7873
DEPTH OF FILL (ft) 1
BOTTOM (cy) 763
SIDE WALLS (cy) 533
TOTAL VOLUME 1296
BENTONITE AT 10% ADDITION 130
50 lb BAGS AT 0.625 CY 207
2 5/13/2005

11111111111
QUANTITY ESTIMATES
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ESTIMATOR:
DSS
ET PROJECT NO.
85748
STATUS OF DESIGN:
PER
ACTIVITY:
HOLDING PONDS
•
I
I I
I
GRASSING AROUND TOP OF LAGOON
GRASSING WIDTH (ft)
AREA (sqft)
HOLDING POND
LAND APPLICATION COST.xls
20
756
3 5/13/2005

PRELIMINARY
ROJECT:
KNIGHTDALE ESTATES MOBILE HOME
JWW ALTERNATIVE ANALYSIS
ACTIVITY:
SPARY EQUIPMENT
PER 2y ACRE PLOT
ESTIMATOR:
PARK
�� `G :..e-
e "' :3 .:;,-per.
COST ESTIMATES
DSS
STATUS:
PRELIMINARY
TECH OF
NC 27607
NO..:
NC
CENTER
.;,
DR
85748
F f,.. '•AJR'riK
��
EARTH
701 CORPORATE
RALEIGH,
ET PROJECT
Y4.. � t�.�•/ - ' 't%���'��'d
E 3r' i yet.'
�^ [-S' �-�...i
3
'C..�a�yyy�y..o,.t..,� "A �
.s► ..s .. e .T� "
w
^` .:St. :xf'!SH''
' .ter.:
..
Y
�:
-�-y.".
p :3
rz-,
wa Vck 1A
6" PVC
240
L.F.
$ 10.00
2,400
143" PVC
140
L.F.
$ 6.50
910
" PVC
420
L.F.
$ 5.25
2,205
2-1/2" PVC
420
L.F.
$ 4.00
1,680
11-1/2" PVC
420
L.F.
$ 2.80
1,176
SPRINKLER HEADS
28
EA
$ 50.00
1,400
560
GALV. PIPE STAND
28
EA
$ 20.00
11"
PVC Fittings 6x3 Tee
5
EA
$ 75.00
375
PVC Fittings 4x90 ell
2
EA
$ 48.00
96
PVC Fittings 3x1 Tee
14
EA
$ 14.00
196
.&PVC Fittings 2-1 /2x1 Tee
9
7
EA
$ 10.00
70
PVC Fittings 1-1/2x90 ell
7
EA
$ 2.50
18
PVC Fittings Reducers
21
EA
$ 3.00
63
Stone Stab. For Pipe
2
TN
$ 10.00
20
Plain Concrete, 2,500 psi
1
C.Y.
$ 300.00
300
Seeding
87
Kcuft
$ 20.00
1,740
Miscellaneous
5
%
660
Total Construction Cost For 2 Acre Site
13,869
MIR
TOTALS
SPRAY FIELD
Pawl
ACRES COST
11 76,279
SPRAY EQUIPMENT
�.► LAND APPLICATION COST.xls Page 1 of 1 5/13/2005

11MM
PRELIMINARY COST ESTIMATES
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ACTIVITY:
FARMING EQUIPMENT
ESTIMATOR:
DSS
ET PROJECT NO. 85748
STATUS OF DESIGN:
PER
QUANTITY
DESCRIPTION
UNIT
MATERIAL COST
LABOR COST
TOTAL
UNIT I TOTAL
UNIT I TOTAL
COST
SMALL TRACTORS 1 Ea 20000 20000
TRAILERS 1 Ea 3000 3000
WEED EATERS 2 Ea 500 1000
SPARE PARTS (5%) 1200
TOTAL CONSTRUCTION COST 25200
FARMING EQUIPMENT
LAND APPLICATION COST.xls
1 5/13/2005

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
PRELIMINARY COST ESTIMATES
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ACTIVITY:
EQUIPMENT STORAGE BUILDING
ESTIMATOR:
DSS
ET PROJECT NO. 85748
STATUS OF DESIGN:
PER
QUANTITY
DESCRIPTION
UNIT
TOTAL
UNIT I TOTAL
COST
i
1
POLE BARN BUILDING
ELECTRICAL BY A-2
800 SqFt 15 12000 12000
TOTAL CONSTRUCTION COST 12000
EQUIPT STORAGE
LAND APPLICATION COST.xls
1 5/13/2005

I l 1 1 1 1 1 1 1 1 1 1 1 1 1 II 1 I 1
PRELIMINARY COST ESTIMATES
PROJECT:
KNIGHTDALE ESTATES MOBILE HOME PARK
WW ALTERNATIVE ANALYSIS
ACTIVITY:
UV DISINFECTION
ESTIMATOR:
DSS
PROJECT NO. 85748
STATUS OF DESIGN:
PER
QUANTITY
DESCRIPTION
UNIT
MATERIAL COST
LABOR COST
TOTAL
UNIT I TOTAL
UNIT I TOTAL
COST
UV EQUIPMENT
CONCRETE
EXCAVATION, BACKFILL & COMPACTION
GRAVEL SUB -BASE
PIPING
FITTINGS
WALL SLEEVE
ELECTRICAL WORK
Miscellaneous (5%)
TOTAL CONSTRUCTION COST
Engineering
Legal and Administrative
Periodical Constructin Inspection
Constructin Administration
Contingency (10%)
TOTAL PROJECT COST
1 Ea 15000 15000 3000 3000 18,000
20 Cy 200 4000 250 5000 9,000
100 Cy 0 0 10 1000 1,000
20 Tn 4 80 4 80 160
50 Lf 15 750 20 1000 1,750
1000 Lbs 4 4000 1 1000 5,000
2 Ea 600 1200 200 400 1,600
1 LS 5000 5000 3000 3000 8,000
2,226
46,736
10,000
500
5 work days 4,000
1,000
5,000
67,236
UV DISINFECTION
WWTP COSTS.xls
1
5/13/2005

MIR
AAA
Aq
APPENDIX C
Existing Wastewater Treatment Plant
0.1 Opinions of Probable Cost
IP
A■A
fun
FBA
OW
AM
FEN
Knightdale Estates Mobile Home Park —"Wastewater Disposal Alternative Analysis"
mi, Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

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APPENDIX D
Present Worth Analysis
Knightdate Estates Mobile Home Park —'Wastewater Disposal Alternative Analysis"
Earth Tech of North Carolina, Inc., Project No. 85748 May 2005

PRESENT WORTH ANALYSIS
PROJECT:
KNIGHTDALE MHP
ACTIVITY:
PUMP TO KNIGHTDALE
EARTH TECH
701 CORPORATE CENTER DRIVE
SUITE 475
RALEIGH, NC 27607
PROJECT NO.: 85748
DATA
PROJECT COST
INTEREST RATE (°%°)
PERIOD (yrs)
OPERATION AND MAINTENANCE COST
SALVAGE VALUE
PUMP STATION AND FORCE MAIN COST
LIFE SPAN (yrs) 40
POINT FOR SALVAGE (yrs) 20
SALVAGE VALUE 488,150
PRESENT WORTH ANALYSIS
INTEREST RATE (%)
PERIOD (yrs)
CAPITAL COST ($)
PRESENT WORTH O&M COST
PW OF SALVAGE
975,500
5.625%
20
45,300
976300
5.63%
20
975,500
535,782
-163,388
PW OF ALTERNATIVE ($) 1,347,895
PW PUMP TO KNIGHTDALE
PRESENT WORTH.xls Page 1 of 1 5/13/2005

MI
fall
Owl
MR
A.,
Mil
PRESENT WORTH ANALYSIS
PROJECT:
KNIGHTDALE MHP
ACTIVITY:
LAND APPLICATION
1
EARTH TECH
701 CORPORATE CENTER DRIVE
SUITE 475
RALEIGH, NC 27607
PROJECT NO.: 85748
DATA
PROJECT COST
INTEREST RATE (%)
PERIOD (yrs)
OPERATION AND MAINTENANCE COST
SALVAGE VALUE
LAND APPLICATION FACILITIES 1,374,400
LIFE SPAN (yrs) 40
POINT FOR SALVAGE (yrs) 20
LAND COST 1,838,000
SALVAGE VALUE 2,525,200
PRESENT WORTH ANALYSIS
INTEREST RATE (%) 5.63%
PERIOD (yrs) 20
CAPITAL COST ($) 3,212,400
PRESENT WORTH O&M COST 1,168,549
PW OF SALVAGE -845,204
PW OF ALTERNATIVE ($) 3,535,746
LAND APPLICATION
ant PRESENT WORTH.xls Page 1 of 1 5/13/2005

PRESENT WORTH ANALYSIS
PROJECT:
KNIGHTDALE MHP
ACTIVITY:
EXISTING WASTEWATER TREATMENT PLANT
EARTH TECH
701 CORPORATE CENTER DRIVE
SUITE 475
RALEIGH, NC 27607
PROJECT NO.: 85748
DATA
PM
PROJECT COST
INTEREST RATE (%)
PERIOD (yrs)
OPERATION AND MAINTENANCE COST
SALVAGE VALUE
ow
BASIN AND TREATMENT PLANT
FRP
FRP
PRP
Full
MI
TRel
MA
MEI
furl
LIFE SPAN (yrs) 40
POINT FOR SALVAGE (yrs) 20
SALVAGE VALUE 0
PRESENT WORTH ANALYSIS
PW EX. WWTP
INTEREST RATE (%) 5.63%
PERIOD (yrs) 20
CAPITAL COST ($) 67,000
PRESENT WORTH O&M COST 638,681
PW OF SALVAGE 0
0
PW OF ALTERNATIVE ($) 705,681
mu PRESENT WORTH.xls Page 1 of 1 5/13/2005

Pc, ern
r NCDENR
Mr. Harvey Murphrey
808 Eagle Rock Road
Wendell, North Carolina 27591
Dear Mr. Murphrey:
The Division has reviewed your comments of July 20, 2004 in regarding the Final NPDES permit for
Knightdale Estates MHP. The Division has considered the concerns raised, and our responses are
explained below:
Michael F. Easley
Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
September 27, 2004
Subject: Comments regarding issuance of
NPDES Permit NC0040266
Knightdale Estates MHP WWTP
Wake County
1) Monitoring Requirements. The final NPDES permit for your facility has become effective August 1,
2004. The permit cover letter stated that the Division can consider reducing monitoring
requirements when the plant has met its permit limits for at least one year. Since the new monitoring
requirements have been in effect less than a year, the Division is unable to grant your request.
Increased monitoring requirements were based on the Hearing Officer Recommendations as a result
of public hearings. The Division has a legal obligation to implement these recommendations.
2) Wastewater Management Plan. Materials provided by you are sufficient to meet the Communication
Plan requirement of your new permit. However, you have not provided the Alternative Analysis that
is required by the Permit. You must still provide us with calculations that would support your
conclusions regarding wastewater disposal alternatives (see enclosed guidance). Each alternative
listed in the permit should be carefully evaluated. Connection to a municipal sewer line might be
economically feasible in a long term due to elimination of many expenses, including operation and
maintenance of WWTP, instream monitoring, etc. Wastewater Management Plan requirements are
also implemented due to the Hearing Officer Recommendations.
If you have any questions concerning this permit, please contact me at telephone number [phone],
extension 594.
Enclosure: EAA Guidance
cc: Central Files
NPDES Permit File
Raleigh Regional Office / Water Quality Section
N. C. Division of Water Quality / NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
Internet: h2o.enr.state.nc.us
Sincerely, d./...
ei Chernikov, Ph.D.
Phone: [phone]
fax: [phone]
DENR Customer Service Center 1 800 623-7748

A Guidance Document to Evaluate Wastewater Disposal Alternatives
Engineering Alternatives Analysis (EAA)
to Evaluate Waste Disposal Alternatives
Prior to issuing an NPDES discharge permit, North Carolina's Division of Water Quality requires all
NPDES permit applicants to evaluate and establish their discharge alternatives by performing a
comprehensive Engineering Alternatives Analysis (EAA). It is the Division's mandate that an
applicant document, from all reasonable cost-effective options, the most environmentally sound waste
disposal alternative.
The Division of Water Quality (the Division) implemented the federally -delegated NPDES permit
program in response to the federal Clean Water Act of 1972, conscious of the specific goal "...to
eliminate all surface water point -source discharges by...1985." While the Division has yet to achieve
this goal, it continues to strive toward it by requiring individuals or organizations to complete an EAA
when applying for a new permit or expanding an existing NPDES permit under Title 15A NCAC
2H.0105 (c) (2).
The purpose of this guidance document is to assist the regulated community in its efforts to evaluate
wastewater disposal alternatives. Environmental and economic design -option issues are inter -dependent
and should not be treated as mutually exclusive. While past applicants have inappropriately segregated
environmental feasibility from economic feasibility when evaluating disposal options, the Division
stresses that the applicant should address both when evaluating the alternatives discussed below.
The following outlines should be used to prepare EAAs. Please note that the Division will refuse and
return an EAA as incomplete if it lacks any of the following basic components:
I. GENERAL INFORMATION
A. Provide Basic Identification of the Project
• Facility name
• County
• Facility address
• Facility telephone number
• EAA preparer's name
• EAA preparer's mailing address and telephone number
B. Provide a detailed description of the project requiring wastewater disposal. All wastewater flows
should be calculated according to 15A NCAC 2H .0219. Demonstrate and justify the need for
flow volumes, to include any flow reductions realized through flow -restricting devices. For all
alternatives, the use of flow -restricting or low -flow devices should be investigated. Report
findings should include flow reduction projections.
C. If existing facilities will be used as part of an expansion, discuss those existing units including
present and past performance, unit capacities, and inadequacies of each. Include a schematic with
component sizes.
Page I of 6
Engineering Alternatives Analysis; June 9, 2000

A Guidance Document to Evaluate Wastewater Disposal Alternatives
D. Indicate if the project will be constructed in phases. Provide the estimated wasteflow per phase.
Indicate current phase status for existing facilities and provide a schedule for constructing each
additional phase.
II. EVALUATE DISPOSAL ALTERNATIVES
The Engineering Alternatives Analysis should evaluate any and all disposal alternatives to
include, at a minimum, the following:
• Connecting to a Publicly Owned Treatment Works (POTW)
• Connecting to a privately owned treatment works
• Feasibility of individual subsurface systems
• Feasibility of community subsurface systems
• Drip irrigating - both surface & subsurface
■ Spray irrigating
• Reuse
• Surface water discharge through the NPDES program
■ Any possible combination of the above options
A. Connecting to a Sewer -Collection System (served by a municipality or other entity holding a
valid NPDES or Non -Discharge Permit).
1. Existing Sewerage System: Indicate the distance to any existing sewer line within a five -
mile radius (extension of radius should be considered if cost effective for project size).
*NOTE: All connection options should include an evaluation of both a gravity line as well
as a force main with pump station(s).
(a) Provide a description of sewer facilities and resources necessary to connect to the
receiving wastewater treatment plant.
(b) Provide a preliminary indication of flow acceptance from local municipal or
private WWTPs under consideration. If a municipal or private WWTP cannot
accept the wastewater, please explain.
(c) Attach a topographic map or a scaled site drawing showing the physical route of
this alternative.
(d) Perform a Present -Value -of -Costs Analysis for this alternative as outlined in
Appendix A of this document. Investigate cost -sharing options with other
potential users.
2. Planned Sewerage System: Determine if an area -wide sewerage system, within a five mile
radius, is projected to be available within the next five years that could receive waste from
your project. Determine, from the appropriate authority, an availability date and flow
acceptance projection. Identify your public utility or private management -group contact
person that assisted you with this determination.
B. Land -Based Disposal (Installing nitrification systems, low pressure pipe systems, drip
irrigation, mound systems, and spray irrigation systems).
Page 2 of 6
Engineering Alternatives Analysis; June 9, 2000

A Guidance Document to Evaluate Wastewater Disposal Alternatives
1. Does your organization currently own land that is available and suitable for a subsurface
system?
(a) Provide a description of the necessary facilities and resources including a site plan
indicating the proposed layout.
(b) Provide soil analyses (see Appendix B of this document).
(c) Provide calculations used to determine the proposed land disposal capacity. Base
these calculations on design and loading -rate characteristics according to
appropriate regulations.
(d) If there is insufficient usable land at the site, address why. Describe how you
would modify the plans (reducing the number of units or reduce the design flow,
etc.) to allow for inadequate disposal caused by unusable land.
(e) Perform a Present -Value -of -Costs Analysis for this alternative as outlined in
Appendix A of this document.
2. If there is insufficient land at the proposed site, determine if any additional land could be
acquired. Document land availability in your area. If adjacent land could be acquired,
evaluate according to item B (1). If adjacent land is unavailable, provide documentation from
the owner stating such.
3. NOTE: Subsurface disposal systems require a 100% reserve area. Surface disposal systems
must be capable of treating waste to secondary limits including disinfection.
C. Wastewater Reuse Evaluate reusing all or a portion of the wastewater generated on -site.
D. Surface Water Discharge (discharge to a flowing stream - defined as having positive 7Q10
and 30Q2 flows).
1. The U.S Geological Survey (USGS) should be consulted to obtain receiving -stream flow
information. This information should be submitted in conjunction with treatment plant
design. For flow information contact Mr. Curtis Weaver at [phone].
2. Proposed treatment systems should compare discharge both with and without tertiary
filtration, assuming a weekly sampling regime.
3. Describe the proposed discharge facilities. Include a schematic diagram of the major
components and a site plan with outfall line(s). All discharge systems must meet design
criteria outlined in the Division's Authorization to Construct process.
4. Document the availability of required land and/or easement agreements.
5. Perform a Present -Value -of -Costs Analysis for this alternative as outlined in Appendix A of
this document.
E. Disposal Combinations The EAA should evaluate the feasibility of combining several disposal
alternatives in lieu of a surface water discharge.
Page 3 of 6
Engineering Alternatives Analysis; June 9, 2000

A Guidance Document to Evaluate Wastewater Disposal Alternatives
Appendix A
Present -Value -of -Costs Analysis
The Present -Value -of -Costs Analysis (PVCA) is meant to evaluate all costs associated with a particular
disposal alternative over the life of the project. Prior to performing a PVCA for any of the alternatives,
all costs must be identified. The PVCA should include all monetary costs associated with construction,
startup and operation of a facility. Costs should include, but not be limited to, the following:
Capital Costs
• Land acquisition costs
• Equipment costs
• Labor costs
• Installation costs
• Design costs
Recurring Costs
• Operation and maintenance costs (with replacement costs)
• Laboratory costs assuming a weekly monitoring regime for discharge systems
and a monthly regime for non -discharge systems
• Operator and support staff costs
• Residual disposal costs
• Connection and subsequent user fees
• Permit and compliance fees •
• Utility costs (power, water, etc.)
Opportunity Costs
NOTE: The applicant shall reference all cost information. If vender quotes have
been received for treatment units or other components, the applicant shall
include these in the document.
Page4of6
Engineering Alternatives Analysis; June 9, 2000

A Guidance Document to Evaluate Wastewater Disposal Alternatives
Calculating Present Value of Costs
Costs incurred in different time periods must be converted to a common time before they can be
accurately combined or compared. Performing this calculation is known as "computing the present
value," or "discounting" the costs. Present value is also sometimes called "present discounted value" or
"present worth."
The applicant shall compute the present value of all cost estimates prepared under this evaluation
guidance using the following standard formula:
Where:
n
PV = Co + E=
1=1 (1 + r)
PV = Present value of costs.
Co = Costs incurred in the present year.
Ct = Costs incurred in time t.
t = Time period after the present year (The present year is t = 0)
n = Ending year of the life of the facility.
r = Discount rate. For these calculations, the applicant shall use an interest rate
quoted by the lending institution. The loan interest rate quote shall be
provided with this analysis.
However, if costs are the same in every time period from year one through year n (i.e., Ct = C, a
constant for t= 1,2,..., n), then the formula reduces to:
PV =Co+C 1+r) -1
r(1 + r)
In this case, the present value may also be retrieved from a table containing the present value of annuities
(an annuity is a constant amount payable in each year for a certain number of years). Such tables are
available from financial institutions.
Page 5 of 6
Engineering Alternatives Analysis; June 9, 2000

A Guidance Document to Evaluate Wastewater Disposal Alternatives
Appendix B
Soil Analysis Report Requirements
For all new facilities
The EAA must provide a detailed soil analysis report including, but not be limited to, the following:
• A copy of field notes and boring log information
• A soils site map overlain on a topographic map (county soil maps may be used to delineate
boring locations only, not for soil characterization).
• Soil characterization in terms of texture, structure, permeability, wetness and mineralogy
• Soil characterization to a depth of 48" or to a restrictive horizon
• Soil loading rate recommendations and land area requirements
The report should address specifically all factors limiting surface or subsurface disposal as an applicable
alternative.
For existing Facilities Proposing an Expansion
The EAA must include a detailed soil analysis report including, but not be limited to, the following:
• County soil maps used to identify on -site soils.
• Best -case loading rates using these soil characterizations.
• Present -Value -Cost -Analysis (see Appendix A).
If the present value for a non -discharge alternative is less than cost of a discharge system, provide a more
detailed soil analysis report including the following:
• A copy of field notes and boring log information
• A soils site map overlain on a topographic map (county soil maps to be used for delineating
boring locations only, not for soil characterization).
• Soil characterization in terms of texture, structure, permeability, wetness and mineralogy
• Soil characterization to a depth of 48" or to a restrictive horizon
• Soil -loading rate recommendations and land area requirements
Page 6 of 6
Engineering Alternatives Analysis; June 9. 2000

C h (1<o v
cC
967 4u,a tAmby
Knightdale Estates MHP Limited Partnership -a.m... `VC
808 Eagle Rock Road
Wendell, NC 27591
919-366-2700
July 20, 2004
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
Mr. David Goodrich
NC DENR, DWQ
1617 Mail Service Center
Raleigh, NC 27699-1617
DENR - WATER
UALIIY
POINT SOURCE gR NCH
' •LC.1l l .t,,,� .
Subject: Issuance of NPDES Permit NC0040266
Knightdale Estates MHP WWTP
Wake County — Letter of July 9, 2004
Dear Mr. Goodrich:
In response to my telephone conversation with a person from your office today,
and to Director Klimek's letter of July 9, we are providing the following
information:
• Monitoring Requirements. As we have diligently and frequently advised in
the past, the poor compliance record for two years prior to April 2002 was
because of unsatisfactory operations by WWTP operators. For the 27 months
since April 2002 when we hired our present operator, GC Environmental, we
have had 100% compliance. Copies of reports previously furnished are
enclosed. Therefore, we respectfully request that you cancel the more
frequent monitoring requirements in the new permit as we have already had
more than the one year of meeting the permit limits.
• Wastewater Management Plan. We are enclosing a copy of our Rules and
Regulations that is already given to every new tenant and other notices
frequently passed out to tenants and displayed in our public information box
from time to time. These notices all prohibit grease from being poured down
drains.
• We have evaluated the feasibility of other wastewater disposal alternatives
and there is simply not enough income for the thousands and thousands of
dollars required to tie in to Raleigh or Knightdale sewer lines or install a new

wastewater treatment plant nor do we have right-of-way to nearest sewer
line, over a mile away. There is also no feasibility for land application or
spray application because of the lack of available land.
• Outfall Signage. We will provide a sign for the stream as noted in the new
permit.
Because the new permit becomes effective August 1, please forward a new
revised permit or some type of approval or addendum prior to that date.
Your prompt cooperation is appreciated.
Sincerely,
`IVVie h/a4143/
Harvey Murphrey
General Partner
Enclosures

KNIGHTDALE ESTATES MHP LP RULES AND REGULATIONS
1. The maximum speed limit within KNIGHTDALE ESTATES is fifteen (15) miles per hour. The operation of automobiles,
motorbikes, motorcycles, etc. with loud mufflers is strictly prohibited. All vehicles must display a current North Carolina license
tag or the vehicle will be towed from the premises. The storage, repairing or overhauling of disabled vehicles is prohibited.
Three -wheel motor vehicles are not allowed to be ridden anywhere on park property.
2. No pets are permitted outside - all pets must be kept in the owner's unit. Pets will be allowed outside only if they are being
walked on a leash by an adult.
3. Yards are to be kept clean and grass mowed weekly during the growing season or any time the grass gets 4" tall and must be
trimmed next to the home and any trees or other obstacles. If the yard is not maintained, management has the right without
notice to clean up said premises and charge the cost to the tenant. The charge for this will be a MINIMUM of $25.00. All
outbuildings, fuel tanks, fences, deck areas, or any other items subject to rust or decay, must be properly painted or preserved.
Concrete blocks may not be used for entrance steps.
Lots must be kept clear of paper, sticks, trash and all other debris at all times.
Positively no discarding of any trash, furniture, appliances, cars, tires or any kind of debris in wooded area or any place in
Knightdale Estates.
!- 4. All outbuildings or fences must be approved by management.
5. All homes must display a street number visible from the street. These numbers must be professional in nature and at least two
(2) inches large, but no larger than four (4) inches.
6. Telephone numbers must be recorded with management.
7. Tenants are required to protect water lines from freezing by using heat tapes and insulation at the time their home is set up, or
before October 30th each year.
8. Under no circumstances should disposable diapers, paper towels, sanitary napkins, waste food, etc., be flushed down toilets.
Any damage due to this will be billed to the responsible tenant.
9. Do not pour any type of grease down the kitchen sink. Grease is to be put in the garbage, not in the sink! Residents will be
charged for plumbing costs if stopped -up lines are due to the above or similar items.
10. Tenants shall be directly responsible for any conduct or damages incurred by their children and/or guests. The streets are not
a playground and for the safety of your children, keep them off the streets.
11. No loud parties, drunkenness, illegal substances, extreme noises or discharging of firearms are allowed on the premises of
KNIGHTDALE ESTATES. Loud music is absolutely not allowed. The volume of music inside the home or a car must be kept low
enough that it cannot be heard outside.
12. Our community is zoned for single family dwellings, so 2 or more families or parts of families are not allowed in dwellings.
13. These Rules and Regulations are subject to be changed from time to time as necessary for effective maintenance.
The undersigned agrees to abide by the above Rules and Regulations.
TENANT 1 Date
TENANT 2 Date

Reglas y Regulaciones de Knightdale Estates
1.La Velocidad maxima en Knightdale Estates es de 15 minas por hora. El operativo de automoviles,
y motocicletas etc.con males con alto ruido son prohibidos.Todos los vehiculos deben tener una
identification de Norte Carolina o el vehiculo sera removido. El aguardar los vehiculos incapacitados
o inservibles son prohibidos.Las motos de tres llantas no son permitidas en cualquier propiedad, de
Knightdale Estates.
2. Las mascotas no son permitidas fuera de casa, y tienen que permanecer en su propia unidad. 0
son permitidas al menos que esten acompanadas de un adulto.
3.Las yardas deben permanecer limpias,y el sacate (yarda) tiene que ser cortada cads fin de semana,
durante la seccion que crece o sea el verano. 0 cuando el zacate tenga una altura de 4" pulgadas de
alto tambien tiene que ser cortado, al igual que los arboles tienen que ser apodados.Si la yarda no es
mantenida con estas reglas,el manager tiene el derecho sin notificar, de limpiarla, con un costo de $25
dolares.Todo porche ,cercas combustibles o objectos decaidos y enmojecidos,deven ser pintados o
preservados. Tabiques concretos, no se permiten en las escaleras.
4. Todas las cercas o cosas que se hagan fuera de casa(como alrrededor de su casa) debe ser
notificado al manager.
5. Todas las casas deben tener un numero de calle o casa. Los numeros deben ser hechos
professionalmente y al menos 2 pulgadas de largo, pero no mas largas de 4 pulgadas.
6.Todo numero de telefono debe ser archivado y notificado ala oficina del manager.
7. Cada persona es responsible de proteger las lineas de agua, para que no se congelen.Deben usar
calentones y insulacion o tambien puedes cambiar la insulacion de las tuberias,cada 30 de octubre
(cada ano).
8. Bajo ninguna circustancia debes de usar ningun tipo de cosas desechables, como
panales,papeles,papel sanitario o desperdiciosde comida etc. en la taza del bano. Cualouier dano
hecho por alguna de estas razones sera cobrado a la persona encareada de la casa.
9. No pongas ningun tipo de grasa en el laba manos de la cosine. La grasa debe ser puesta en el bote
de la basura no en el laba manos. Los residentes tendran un carto por el costo del plomero si las
lineas del laba manos se tapan, por alguna de estas rezones.
10. Los padres o adultos son directamente responsables por cualquier conducts o dano incorrupto de
sus hijos. Las calles no son areas para jugar. Por la seguridad de sus hijos mantengalos fuera de la
calle.
11. No fiestas ruidosas, borrachos,substancias illegales,ruidos extremadamente altos o descargo de
armas no son permitidas en Knightdale Estates. Musica alta y ruidosa es absolutamente no
permitida. El volumen de la musica dentro de casa o carro tiene que mantenerce despacio, to
suficiente como para que no se escuche hacia afuera.
12. Nuestra comunidad debe mantener nadamas una familia, entonces dos familias o parte de
familiares no son premitidos en las trailas.
13. Estas reglas y regulaciones pueden ser cambiadas cuando sea necesario por el mantenimiento
effectivo.
Persona (inquilino)1.
Persona (inquilino)2.

Please read carefully and comply!
KNIGHTDALE ESTATES MHP LP RULES AND REGULATIONS
1. The maximum speed limit within KNIGHTDALE ESTATES is fifteen (15) miles per hour. The operation of automobiles,
motorbikes, motorcycles, etc. with loud mufflers is strictly prohibited. All vehicles must display a current North Carolina license
tag or the vehicle will be towed from the premises. The storage, repairing or overhauling of disabled vehicles is prohibited.
Three -wheel motor vehicles are not allowed to be ridden anywhere on park property.
2. No pets are permitted outside - all pets must be kept in the owner's unit. Pets will be allowed outside only if they are being
walked on a leash by an adult.
3. Yards are to be kept clean and grass mowed weekly during the growing season or any time the grass gets 4" tall and must be
trimmed next to the home and any trees or other obstacles. If the yard is not maintained, management has the right without
notice to clean up said premises and charge the cost to the tenant. The charge for this will be a MINIMUM of $25.00. All
outbuildings, fuel tanks, fences, deck areas, or any other items subject to rust or decay, must be properly painted or preserved.
Concrete blocks may not be used for entrance steps.
Lots must be kept clear of paper, sticks, trash and all other debris at all times.
Positively no discarding of any trash, furniture, appliances, cars, tires or any kind of debris in wooded area or any place in
Knightdale Estates.
4. All outbuildings or fences must be approved by management.
5. All homes must display a street number visible from the street. These numbers must be professional in nature and at least two
(2) inches large, but no larger than four (4) inches.
6. Telephone numbers must be recorded with management.
7. Tenants are required to protect water lines from freezing by using heat tapes and insulation at the time their home is set up, or
before October 30th each year.
8. Under no circumstances should disposable diapers, paper towels, sanitary napkins, waste food, etc., be flushed down toilets.
Any damage due to this will be billed to the responsible tenant.
9. Do not pour any type of grease down the kitchen sink. Grease is to be put in the garbage, not in the sink! Residents will be
charged for plumbing costs if stopped -up lines are due to the above or similar items.
10. Tenants shall be directly responsible for any conduct or damages incurred by their children and/or guests. The strcct✓ are not
a playground and for the safety of your children, keep them off the streets.
11. No loud parties, drunkenness, illegal substances, extreme noises or discharging of firearms are allowed on the premises of
KNIGHTDALE ESTATES. Loud music is absolutely not allowed. The volume of music inside the home or a car must be kept low
enough that it cannot be heard outside.
12. Our community is zoned for single family dwellings, so 2 or more families or parts of families are not allowed in dwellings.
13. These Rules and Regulations are subject to be changed from time to time as necessary for effective maintenance.

NOTICE
KNIGHTDALE ESTATES MOBILE HOME PARK RESIDENTS
Any tenants who are not violating Park rules, please consider this a `Thank you' and
"Appreciation Notice".
In the past five (5) years we have sent out numerous notices. Some tenants abide by
the rules and some don't. There are still some violators of rules of Knightdale Estates
Mobile Home Park in critical areas such as follows:
GREASE
There shall be no grease put in any drains, commodes, sinks or bathtubs, absolutely
none!
WATER LINES
You must protect your own water lines from freezing. Do not, again do not leave water
running inside the home to keep water from freezing during cold weather.
LEAKS
Faucets. commodes. etc. any water that is dripping or leaking down the drain is your
responsibility to repair.
ANIMAL - ''PETS'
All animals must be kept inside the home at all times. other than being walked on a
leash by an adult. not tied outside on a chain or rope. This includes all animals, yes
cats also.
LOUD MUSIC
If it can be heard outside the home at any time 24 hours a day. it is too loud. This also
includes music from any vehicles on Knightdale Estates property, tenants or guests.
I already know where some of these problems exist. If you choose not to abide by
these or any other rules of Knightdale Estates Mobile Home Park. you will be evicted.
Harvey

Knightdale Estates MHP
217-1700
ttrention A18
esidents
1. Please do not leave unwanted mail on top of the mailboxes. Place it in the
garbage can provided.
2. Please do not flush anything down toilets other than toilet tissue. Grease
or cooking oil, tampons or applicators, sanitary napkins, q-tips, cigarette
butts, condoms, plastic bags, hair, paper towels, rags, or other items to
be disposed of must go into garbage cans and not in any sinks or toilets.
3. Some yards need leaves cleaned up and placed by street in bags.
4. Loud music played in cars, yards or homes, and speeding on mobile home
park streets are prohibited by residents and their guests.
5. Appliances, tires, furniture, or other unwanted items shall be disposed of
by tenant or the items will be picked up and disposed of by the park
owner with a minimum charge of $35.00 to the tenant.
6. All residents and guests must park in parking areas and not all over grass.
7. Parents: please do not allow your children to play around the mailboxes
while getting on or off school buses or any other time, day or night.
Thank you for your cooperation.
Park Maanagehnent

Knightdale (Estates MHP
217-1700
Atencion Residentes
1. No dejen el correo no deseado encima del buzon. Por favor Ponganlo en el
basurero provisto.
2. Por favor no echen nada mas que papel higienico en Ia taza (toilet). bescarten
grasa, aceite de cocinar, tampons o aplicadores, panos higienicos, Q-tips,
cigarillos, condones, bolsas plusticas, pelo y patios (toallas) de papel en el
basurero no en el fregadero ni en Ia taza.
3. Limpien los terrenos Ilenos de ho jas. Pongan las hojas en bolsas y dejenlas al
lado de la calle.
4. Se prohibe tanto pars los residentes como para los invitados musica ruidosa en
los coches y en las casas y mane jar rdpidamente en las calles.
5. Enseres electricos, Ilantas, muebles y otras pertenencias no deseadas deben ser
botadas (tiradas) por los residentes. Cosas dejadas afuera serun desechadas
por el dueno del parque por un costo minimo de $35 al residente.
6. Estacionen los coches en los espacios provistos. No estacionen en Ia hierba (el
sacate).
7. A todos los padres - no se permitan que sus hi jos jueguen en el area del correo
(los buzones) a ninguna hors.
Gracias por su cooperacion
Gerencia del parque

NOTICE NOTICE NOTICE
ABSOLUTELY NO GREASE OR
FOOD TO BE FLUSHED DOWN
TOILETS OR SINKS AT ANY
TIME. NOR ANY RAGS,
TAMPONS OR SANITARY NAPKINS!
NOTHING EXCEPT TOILET
TISSUE SHOULD BE FLUSHED!