HomeMy WebLinkAboutAgenda - 03-02-2006-10bORANGE COUNTY
BOARD OF COMMISSIONERS
ACTION AGENDA ITEM ABSTRACT
Meeting Date: March 2, 2006
Action Agenda
Item No. ~ O_~
SUBJECT: Buckhorn Road EDD/Community Water/Sewer Project -Project Completion/
Timing Issues
DEPARTMENT: County Manager
PUBLIC HEARING: (Y/N) Yes
ATTACHMENT(S):
County Engineer's Memo
Draft letter from the BOCC to CGLS
City of Mebane letter to CGLS
CGLS email (Cecil Madden) to County
INFORMATION CONTACT:
County Engineer, 919-245-2303
Engineer
Proposed Alternative Financing Table
PURPOSE: To update the BOCC as to Orange County and City of Mebane efforts to permit
the portion of the Buckhorn EDD/Community utility project that will provide water and sewer
service to the Gravelly Hill Middle school.
BACKGROUND: The Construction Grants and Loans Section (CGLS) of the Division of Water
Quality (DWO), NC Department of Environment and Natural Resources (DENR) is the
regulatory/review agency charged with permitting projects funded by Environmental Protection
Agency (EPA) State and Tribal Assistance Grants (STAG). The STAG grant process calls for
the Grantee to submit a number of documents (Engineer's Report, Environmental Assessment,
Construction Plans and Specifications, etc,) that are first reviewed and approved by CGLS and
other local environmental agencies before being forwarded to the US EPA for its review and
approvah
This review process has created two sources of delays in the County's effort to get the
Buckhorn Road EDD/Community project underway:
• Delays in CLGS reviews of the EA and Engineer's Report have extended the overall state
and federal review/approval process to a paint where it is probable that project construction
cannot begin until the time when it needs to be completed; and
• CLGS engineering review staff (constn~ction documentation review) has ruled that the City
of Mebane's existing wastewater utility infrastructure has insufficient capacity to accept
additional wastewater flow, including flow from the Buckhorn EDD/Community project. Their
position, at least currently, is that they will require upgrades/modifications to Mebane's
existing infrastructure before they will allow the Mebane system to receive wastewater flow
from the Buckhorn Road EDD/Community project.
Commissioners will recall from staff memorandums and presentations at several BOCC
meetings and work sessions in February, a project that will provide water and sewer utilities to
Gravelly Hill Middle School at a point in time anywhere near the proposed August 25th middle
schcol opening will require that the County initiate a construction project (EDD south of I-85/40
and Gravelly Hill) that is not funded through the STAG (State and Tribal Assistance Grant)
process, It may be possible for a locally funded project to provide the means (completed water
system, short term pump and haul wastewater system) to meet a projected August 25th school
opening, Although a reconfigured project would nc longer fall under STAG review processes
and extended timetable, the actual project review/approval/ permitting would remain under the
purview of CGLS,
The Board has asked that staff seek answers to several questions with the answers serving as
a basis for Board deliberation and decision:
z
• Does the City of Mebane have a formal CIP process for upgrading its water and
sewer infrastructure and is the upgrade of the existing 8" sewer line (the 1200 feet
of line Mebane now proposes to upsize to 12" to address capacity concerns raised
by CGLS) considered in the plan or process.
City Manager Robert Wilson and City consulting engineer Darrell Russell have indicated
that the City does not have a formal GIP process for these infrastructure upgrades and
had not scheduled the existing 8" line for upgrade,
• Does the City expect the County to participate financially in the cost of upgrading
its existing infrastructure, how much cost is involved and can that cost be offset
somehow.
The City is asking that the County participate in the amount of $50,000 in upfront costs,
The City, which proposes to dispense with tap-on fees to the school as well as to existing
single family residences in the Buckhorn Community, has indicated in principle its
willingness to enter a contract with the County whereby the City reduces its usual utility
(sewer and or water) rates that would be applicable to the Buckhorn Community
residents to approximately $4.50 per 1000 gallons of use. This reduction would be
applicable until the $50,000 has been expended (projected to be in excess of 5 years,
given estimated water consumption levels), The County and City Attorneys are working
toward capturing this agreement in a written amendment to the existing County/City utility
service agreement.
• Is the County's STAG funding is in danger of being reduced or otherwise
negatively impacted by reconfiguring the overall Buckhorn Road EDD/Community
and Central Efland project withdrawing the portion of the project intended to serve
Gravelly Hill Middle School from the grant funding process.
CGLS Chief Bobby Blowe has responded -via email -the CGLS has nc problem with
the Gravelly Hill portion of the project being broken out and that this does not endanger
the funding in any way, Mr. Blowe has also indicated that the EPA has na knowledge as
to the original configuration of the STAG project and consequently has now and will have
no concern as to any project reconfiguration. As per the direction of the Chair, County
staff will ask Mr, Blawe and Congressman Price's office to provide letters indicating that
there is no issue with the STAG funding if the STAG project is reconfigured,
Is Mebane's proposal to modify its existing infrastructure (redirecting the
discharge from one pumping station and increasing the line size/capacity of a 1200
foot section of its gravity sewer) is going to satisfy CGLS requirements as to the
capacity of Mebane's infrastructure.
CGLS staff has provided email correspondence indicating that Mebane's proposal
appears to be satisfactory in principal and theory, but that final approval depends on
Mebane being able to show by engineering calculation and hydraulic modeling (computer
simulation modeling) that the proposal should actually work. As of March 15~, Mebane
and its consulting engineer have submitted the required engineering calculation and
modeling and a formal statement of Mebane's intent to make those improvements that
have been show to be efficacious by those calculations.
3
County staff has, as of March 15~, been advised of yet another somewhat problematic and
heretofore unknown requirement by CGLS staff, CGLS staff has indicated that it will not review
Mebane's latest submittal or any more material or documents submitted by the County or the
City of Mebane until we submit a complete package of information that includes all pertinent
documentation, That package must include revised plans and specifications (either showing
the reduced-scope project broken out of the STAG funding process or containing those STAG
related revisions that have been required by CGLS), a plan (with supporting documentation) to
improve the existing Mebane infrastructure and the County's formal letter of intent to
reconfigure the existing STAG funded project, However, significant additional project delays
consequent to this requirement can be minimized once the BQCC makes the decision to move
forward with an expedited locally funded project. Plans and specifications showing the reduced
scope project and the County's letter of intent (to reconfigure the project) can be readied and
submitted very quickly. CGLS should then be able to make its decision on the adequacy of
Mebane's infrastructure improvement plan (approving the County's plans and specs should be
a essentially a pro forma process), If Mebane's plans are approved, CGLS authorization to
advertise the project for bidders within five days of the County's formal statement of its intent to
reconfigure the STAG project and the actual advertisement could published within a week of
CGLS authorization to advertise. Should Mebane's plan not be approved, the project would be
delayed until a satisfactory plan is developed and approved.
The following attachments related to the Buckhorn EDD/Gravelly Hill Middle School Water and
Sewer Extension project have been provided for the Board's information
Attachment 1 -This 3/2/06 memorandum from County Engineer Paul Thames details the
actions that have been taken to date, and the actions that remain to be done.
Attachment 2 -This is a draft letter (as explained in the memorandum) that the County needs
to send to the State/Construction Grants & Loans Section (CGLS). It is proposed that the Chair
be authorized to sign this letter contingent upon 1) written assurance from the State/CGLS that
the actions being taken will not affect the STAG grant, and 2) confirmation from Congressman
David Price's office that his office does not believe that the actions being taken will adversely
affect the STAG grant.
Attachment 3 -This letter and report demonstrates that the City of Mebane has followed
through in its efforts to satisfy the requests that the State has detailed. In the letter, Mebane
confirms its plans to upgrade the sewer facilities and lines as required by the State. The
County's project engineering consultants and the County Engineer have reviewed the Mebane
engineer's pumping and flaw analysis report and find it to be technically sound. It also should
be noted that the County Attorney and the Mebane City Attorney are currently working through
the legal framework that had been agreed to in principle by the County and Gity.
Attachment 4 -This 3/1/06 email from Cecil Madden with the State/CGLS demonstrates the
manifest difficulty we have encountered in working with the State/CGLS on this project,
Attachment 5 - Based on current engineering estimates, the additional funding needed to
complete the Buckhorn EDD/Gravelly Hill infrastructure will be approximately $1,5 million
beyond what is currently programmed for the project. The table in this attachment reflects
options for how the County s planned April 2006 debt issuance plans could be configured to
affect the sources of project funding, The default option, consistent with the BOCC's plans
since Fall 2005, is to issue $2,000,000 in COPs for conservation easements, and $500,000 in
COPS for construction of the waterline to the new middle school, The implication of adhering to
this option is that the BOCC would need to decide at a subsequent meeting how it would
identify pay-as-you-go capital funding totaling $1.5 million to complete the infrastructure project.
That discussion could take place as soon as the March 15, 2006 budget work session.
FINANCIAL- IMPACT: Financial Impacts are outlined above and on Attachment 5.
RECOMMENDATION(S): The Manager recommends that the Board:
• accept the report as a basis for upcoming decisions on 1) reconfiguring the STAG
funded project to separate out the portion that will serve the Gravelly Hill Middle School;
and 2) designating utility extension funding sources outside the grant process; and
• authorize the Chair to sign the letter (Attachment2) contingent upon 1) written assurance
from the State/CG~S that the actions being taken will not affect the STAG grant, and 2)
confirmation from Congressman David Price's office that his office does not believe that
the actions being taken will adversely affect the STAG grant,
5
MEMORANDUM
TO: Orange County Board of Commissioners
CAPIES: John Link, County Manager
Rod Visser, Assistant County Manager
Donna Dean, Budget Director
Pam Jones, Purchasing/Central Services Director
FROM: Paul Thames, PE, County Enginee
DATE: March 2, 2006
SUBJECT: Moving forward with the Buckhorn EDD/Gravelly Hill Middle School water and
sewer extension
The purpose of this memorandum is to:
update the Board on the latest developments related to Construction Loan and Grant
Section (CLGS) review of Mebane's proposal to increase the capacity of its
wastewater infrastructure (that portion which will receive wastewater flow from both the
Buckhorn EDD/Gravelly Hill school and the Buckhorn community north of I-85/40)
outline the regulatory approval process that allows Orange County to move forward
with bidding a Buckhorn EDD/Gravelly Hill water and sewer extension project.
As the Board will recall from staff memorandums and presentations at several BOCC
meetings and work sessions in February, a project that will provide water and sewer utilities
to Gravelly Hill Middle School at a point in time anywhere near the proposed August 25th
middle school opening will require that the County initiate a constn~ction project (EDD south
of I-85/40 and Gravelly Hill) that is not funded through the STAG (State and Tribal Assistance
Grant) process. It may be possible for a locally funded project to provide the means
(completed water system, short term pump and haul wastewater system) to meet a projected
August 25th school opening, Although a reconfigured project would no longer fall under
STAG review processes and extended timetable, the actual project review/approval/
permitting would remain under the purview of CGLS,
County staff, the County's engineering consultant (Coulter Jewell Thames - CJT} and the
City of Mebane have been working to address CGLS concerns and comments arising from
the review process to date, As of March 15t, the City of Mebane has submitted a revised plan
to update the portion of its existing infrastructure that CGLS has found problematic, In a
subsequent CGLS communication (phone and email, attached) to County staff, CGLS staff
has indicated that it will not review Mebane's submittal or any more material or documents
submitted by the County or the City of Mebane until we submit a complete package of
information that includes all pertinent documentation. That package must include revised
plans and specifications (either showing the reduced-scope project broken out of the STAG
funding process or containing those STAG related revisions that have been required by
CGLS), a plan (with supporting documentation) to improve the existing Mebane infrastn~cture
and the County s formal letter of intent to reconfigure the existing STAG funded project.
-2-
This latest CGLS ruling has been a shock to all of the County/Mebane engineering personnel
involved in the permitting and review process, because this represents a new requirement not
previously stated by CGLS. Additional project delays consequent to this ruling can be
minimized once the BOCC makes the decision to move forward with an expedited locally
funded project. Plans and specifications showing the reduced scope project and the
County's letter of intent (to reconfigure the project) can be readied and submitted very
quickly. CGLS should then be able to make its decision on the adequacy of Mebane's
infrastructure improvement plan (approving the County's plans and specs should be a
essentially a pro forma process), If Mebane's plans are approved, CGLS authorization to
advertise the project for bidders within five days of the County's formal statement of its intent
to reconfigure the STAG project and the actual advertisement could published within a week
of CGLS authorization to advertise. Should Mebane's plan not be approved, the project
would be delayed until a satisfactory plan is developed and approved.
Reconfiguring the existing STAG funded project the Gravelly Hill portion of the existing STAG
funded Buckhorn Road EDD/Community project will require the following actions on the part
of the BOCG, County staff, the County s engineering consultant (Coulter Jewell Thames -
CJT), the City of Mebane and CGLS:
• Submit a plan (with supporting documentation) to improve the existing Mebane
infrastructure - by the City of Mebane -accomplished as of 3(1!2006
• BOCC approves reconfiguration of STAG funded project by designating a locally funded
project containing just the Buckhorn EDD/Gravelly Hill utility extension
BOCC approves or modifies the attached draft letter declaring its intent to reconfigure the
STAG funded project by breaking out the Buckhorn EDD/Gravelly Hill utility extension as
a separate locally funded project and authorizes the Chair to sign it once written
confirmation is provided by CGLS that the proposed STAG project reconfiguration does
not threaten the level of STAG funding in any way
• County staff forwards the Board's letter of intent to reconfigure the STAG project to CGLS
• CJT submits plans and specifications reflecting project reconfiguration (deleting all plan
elements applicable to northern Buckhorn Community, all specification elements related
to STAG requirements) and all CGLS comments, requirements, etc., applicable to the
locally funded project. CGLS reviews letter of intent to reconfigure project and revised
plans and specifications (essentially a pro forma process) and Mebane's proposal and
documentation relative to improvement to its infrastructure.
• CGLS approves all submitted documents, proposals, etc., and authorizes advertising of
bids.
If I may provide additional information or clarification of the information provided herein at this
time, please advise.
1
March 2, 2006
Mr. ~l. Robert Blowe, PE, Chief
Construction Grants and Loans Section
Division of Water Quality
Department of Environment and Natural Resources
State of North Carolina
1633 Mail Service Center
Raleigh, NC 27699-1633
Dear Mr. Blowe:
As per recent and ongoing discussions between Construction Grants and Loans
Section staff and Orange County staff and engineering consultants, I am writing on
behalf of Orange Gounty and at the express direction of the Board of County
Commissioners to advise you of our intent to reconfigure our STAG funded utility
expansion project currently within your review process. Specifically, it is the
County's intent to move forward with a project that will provide water and sewer
service to an area south of Interstate 85/40 along Buckhorn Road and West Ten
Road and to the Gravelly Hill Middle School. It is fiarthermore the County's intent
that the portion of the project along Buckhorn Road north of Interstate 85/40, the
area of "environmental justice" interest be recombined with the previously
separated out portion of the overall STAG funded project that will also provide
sewer service to the central Efland community,
As per those discussions referenced above, you will, of course, realize that our
purpose in reconfiguring the STAG project is to eliminate that time associated with
the federal agency review portion of the overall project review, approval and
permitting process. It is our understanding, based on previous correspondence
between yourself and County staff, that this reconfiguration poses no threat of loss
of any STAG funding. It is likewise our understanding that the act of reconfiguring
the STAG project is one that needs to be coordinated solely with Construction
Grants and Loans and does not require any coordination with the US EPA or other
federal funding sources, It is also our understanding the broken out locally funded
project will remain within the approval and permitting purview of the Construction
Loans and Grants Section.
Mr, ,1. Robert Blowe
March 2, 2006
Page 2
I trust that this letter makes clear the County's intent insofar as the reconfiguration
of the STAG and locally funded projects is concerned and that this letter, in and of
itself, meets your requirements insofar as a formal statement of our intent is
concerned. If this letter is not sufficient, is unclear in any way or is otherwise
unsatisfactory, please contact me and advise as to what additional information,
revision or formality is required to accomplish the desired reconfiguration.
Sincerely
Barry Jacobs, Chair
Orange County Board of Commissioners.
Cc
Board of County Commissioners
John M, Link, County Manager
Robert Wilson, Mebane City Manager
Dr. Shirley Carraway, Superintendent, OG Board of Education
Orange County Board of Education
Paul Thames, PE, Gounty Engineer
RLLEY WILLIRMS Fax:3362263034
Mar 1 2006 .1450
Rbbert L Witson ~t~tt ~~ ~,11.~,1~.V t~t.~t W
City Manager YJ^
Glwdrl SJCpheoson 106 East Washington Street
Mayo, Mebane, North Cazoliua 27302
(919)563-5901
Council
Parry Philipps, Ma~y~o°r' Pro Tem
~r1I0 B13u...~
Ed Hook
Bob Hupman
Everette Gremc
February 28, 2006
Mr. Cecil Madden, Jr., P.E. Supezvisor
N.C. Depamnent of Environment and Natuzal Resources
Construction Grants and Loans Section
Design Management Unit
1633 Mail Service Center
Raleigh, NC 27699-1633
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Subject: Buc)cbom Water and Sewer Extensions
Orange County
STAG Project Faxed to: 919-715-6229
AWCI{ Job ~ 03224
Deaz Mr. Madden:
We aze pleased to provide additional information regazding the capacity of our Industrial
Drive Pump Station. Attached is an Analysis provided by our Engineer, Darrell L.
Russell, P.E., which cll*r,mar;zes the estimates of existing and proposed flows tributary to
this station. It also includes recommendations for certain system improvements, which
will be completed in the neaz future.
The following schedule is proposed to complete the recommended system improvements:
TTEM
1. Replacing existing 8" gravity sewer line on
Eight Street and McPherson Drive with a 12"
gravity line (approximately 1200 feet).
2. Replace impellers in the L.J. Rogers Pump Station
to modify the pumping capacity to 98 GPM with
the Industrial Drive Pump Station in operation..
.Also included is the connection to the existing 8"
sewer force main,
COMPLETION DATE
August 1, 2006
August 1, 2006
Chartered in 1881
RLLEY WIL.LIHMS FdX~55b11b5U54 rtar t t~uo lv~~v r u~ G~
Mr. Cecil Madden, .Tz., P.E.. Supezvisor
N.C. Department of Environment and Natural Resources
Construction Chants and Loans Section
Design Management Unit
1633 Mail Service Center
Raleigh, NC 27699-1633
February 28, 2006
As we have previously discussed these issues with you, we trust all will be in order so the
Orange County Pzaject can move fozwazd.
If you have any questions, please let me Imow.
ezely,
~~
Robert L. Wilson, City Manager
RLW/ja
Attachment
cc: Paul Thomas, P,E., Orange County Engineer
Darrell L. Russell, P.E., City Engineer
HLLtY WlU~1HM5
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FdX~33bLLb3U34
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Williams, carmen ~ kin
Engineering Architecture Land Surv
February 28; 2006
Mr. Robert Wilson, City Manager
City of Mebane
106 E. Washington Street
Mebane, NC 27302
Subject: Orange County Water and Sewer Project
Industrial Drive Pump Station
AWCK Job # 03224
Deaz Mr. Wilson:
r. u4
~,
inc.
Attached is our Analysis of Flow to the Industrial Drive Pump Station to address capacity issues
related to the new Orange County Water and Sewer Project serving the Buckhorn area. Our
analysis indicates that the Industrial Drive Pump Station will have available capacity to accept the
flow from the Orange County Water and Sewer Project subject to the following:
1. The L.J.. Rogers Pump Station capacity be revised to 98 GPM and connected to the
existing 8" sewer force main. Based on our modeling, s change out of'pump impellers
will meet this condition. A permit wil( be requued for this change, We estimate that the
design, permitting, and related wnstruction and impeller change out can be completed by
August I, 2006.
2.. Replace the existing 8" gravity sewer line at the end of the existing 8" sewer force main
on Eight Street and McPherson Drive with a new 12" gravity line, This replacement line
is approximately 1200 feet in length. A gravity sewer extension permit will be required
for this pipe replacement; however, it can be done using the fast track method. We
estimate that the design and construction of this work can be completed by August 1,
2006.
We are also attaching a copy of the pump station modeling that generated the estimated pumping
rates for the various pumping scenarios. This information is summarized in the attached analysis..
The attached analysis with supporting documents should be sent to the Construction Grants and
Loans Section for their review.. If you have any questions relating to this issue, please let me
know.
Sincerely,
Alley illiams, Carmen & Ki Inc.
a_ ~,~~
e L. Russe P.E.
DLft/ja
Attachments
740 Chapel Hill Road (27215) P 0. Box 1179 • Burlington, North Carolina 27216
Tel. - (336) 2265534 • Fax- (336) 226-3034 awck.com
ESTABLISHED 1960
HLLtT WILLL HI'IJ I'dX •JJOLLOJUJ4 I'Idl 1 GUVO 14 •Jl !'. VJ '~
03224
ANALXSIS OF FLOWS TO THE INDUSTRIAI. DRIVE PUMP STATION
Febn~ary 21, 2006
This section swnmarizes the estimates of flows tributary to the City of Mebane Industrial
Drive Pump Station as related to the proposed construction of the Buckhozzr Pump
Station and Force Main Project, including the proposed STAG Project on the north and
south side of interstate I-40/85.
During the review of the subject pzoject by the Construction Grants and Loan Sections,
questions have been raised regazding the available capacity in the Industrial Drive Pump
Station. Following a review ofthe actual pump performance using calculated pump
drawdowns, it was determined that the existing Industrial Drive Pump Station is actually
operating at 501.2 GPM. While the station was oziginally rated at 350 GTPM, actual
system head (TDI~ is less than estimated and the pump is operating at a point on the
pump curve where it is pumping 501.2 GPM. This difference in head is attributed to
fording trapped air in the force main due to a malfunctioning air release valve, Following
manual release of the air, the pump opezated at its true system head (approximately 100
feet) and yielded the 501.2 GPM pumping zate. Due to the age of these aiz release valves,
the City of 1vlebane has ozdered new valves for replacement to achieve consistent system
operation.
With the pumping capacity of the Indrrstrial Drive Pump Station being established at
approximately 500 GPM, the receiving line was then evaluated for adequacy to
accommodate these flows. Dozing the pump evaluation, the receiving manhole was
observed during actual pump operation. While some pipe submergence occurred in the
8" receiving line, no manhole overflow occurred. Modeling for this 8" line does indicate
pipe submergence of almost 3 feet at 500 GPM; therefore, it is zecommended that
approximately 1200 feet of 8" gravity sewer being upsized to 12", A 12" Line can
accommodate appzoximately 1300 GPM when flowing full at a slope of 0,65% (slope of
the existing 8" line).
The Industrial Drive Prunp Station currently has existing flows of approximately 45,000
CrPD from businesses flowing to this station, It also accepts flows fiom another pump
station (L,. J. Rogers Pump Station) that currently has approximately 1,000 GPD of
wastewater that flows into it. While the L. J. Rogers station currently pumps only 2-3
cycles per day, it has pumps that are rated at 200 GPM. These pumps are currently over
designed for the existing flow and it is zecommended that this station be downszzed to a
100 GPM station. TfLis downsizing will provide additional capacity in the Industrial
Drive Pump Station while providing capacity to accept additional users tnibutary to the
L.J. Rogers Station.
We have modeled these two stations as if connected to the existing 8" force main with the
current pumps when operating sepazately and when operating simultaneously. This
modeling indicates the following:
Page 1
HLLCI W1LL1H1'IJ ~~[^JJVLL VJUJ4
A.
Existins Pumps -Modelins Results
1141 1 LVVV 14 •Jl
i".UV
13
03226
Industrial Drive Pump Station Pumping Rates
a Operating alone 485 GPM
b. Operating with L. J. Rogers Pump Station on line 485 GPM
B.
2. L, J. R.ogeis Station Pumping Rates
a Operating alone 75 GPM
b. Operating with Industrial Dr. Pump Station on line 0 GPM
As noted from this modeling, the Industrial Drive pumps have an estimated
pumping rate of 485 GPM, which is very close to the observed pump rate of 500
GPM during the "drawdown" test. It is also noted that the modeling indicated
that the L. J, Rogers Pump Station could pump 75 GPM when operating alone,
but cotild pump 0 GPM when the Industrial Drive Pump Station was operating.
With this being the case, the impellers on the L. J. Rogers Pump Station will need
to be changed to provide a higher head to produce 100 GPM when the Industrial
Drive Pump Station is operating.
The modeling also indicates that if the L. J. Rogers Pump Station Impellers are
changed, the following pumping rates would occur at both sta5ons:
Existins Pum 3~s with I~Tew Impellers in L. J. Rogers - Modeling Results
1. Industrial Drive Pump Station Pumping Rates
a Operating alone 485 GPM
b. Operating with L. J. Rogers Pump Station online 437 GPM
?, L. 7.. Rogers Station Pumping Rates (with new impellcrs)
a Operating alone 377 GPM
b. Operating with Industrial Dr. Pump Station on line 98 GPM
Based on the pump station modeling, if the L. J. Rogers Pump Station is
connected to the existing 8" force main, and the impellers aze changed to provide
98 GPM when the Industrial Drive Pump Station is operating, the Industrial Drive
Pump Station would be capable of pumping 437 GPM when the I,, J. Rogers
Pump Station is operating. This indicates that the Industrial Drive Pump Station
has available capacity of 437 GPM peak pumping capacity at the wozst case event
when the L. 7. Rogers Pump Station changes are made.
Page 2
HLLCi W1LLIHI'IJ i"[Sx ^JJVGLGJW4 line 1 «.+u~ 14 •..+c
C. industrial Drive Puma Station
Estimate of Contributory Flow
it has been proposed that the L,.. J. Rogezs Pump Station be downsized to 100
GPM. This results in the Indusn'ial Drive Pump Station having a pumping
capacity of 437 GPM when the L. J~ Rogers Pump Station is operating,
~ vi ,~
oaua
The following is the estimate of contributory flow to the industrial Drive Pump
Station, including flows from the new Orange County Schooi and the STAG
Project area.
Oran e Coun School Pum Stafion 205 GPM (PEAK RATE)
This statioai was originally proposed at 220 GPM; however; it has been
indicated tbat it can be revised to 205 GPM and still maintain adequate
velocities in the 6" force main, This report is based on the assumption that
this station will have a final design capacity of 205 GPM.
2. STAG Protect Area 69.7 GPM (PEAK RATE)
The STAG Project includes the installation of new 8" gravity sewers in the
Buckhom Road area on the north and south side of Interstate 85/40 to
serve residents and 2 churches. There are a total of 28 existing residences,
38 undeveloped lots, and 2 churches to be served by the proposed sewer
extension, Using flow estimates provided by C;ovlter, Jewell, Thames,
P.A, for these users, the following estimate of peak flow is presented.
A. Area North of U85-40
i. Houses (Existing and Undeveloped Lots)
48 x 360 Gal/day = 17,280 GPD (Avg. FIow)
ii. Churches 1,050 GPD (Avg.. Flow)
Total Average Daily Flow 18,330 GPD
iii. Peaking Factor ~- 3.96
iv. Estimated Peak Flow =18,330 x 3..96 = 72,587 GPD
1440 = 50.4 CrPM (PEAK. FL,OV~
B. Area South of U85-40
i. Houses (Existing and iJndeveloped Lots)
l8 x 360 GaUday = 6,480 GPD (Avg. Flow)
ii. Peaking Factor - 4.28
iv. Estimated Peak Flow = 6480 x 4.28 = 27,734 GPD
=1440 =19.3 GPM (PEAK)
C. Total Peak Flow from A, + B. = 50..4 + 19.3 = 69.7 GPM
Page 3
114111 will Y1111V I LLn VJVGG VVVV`t
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0322a
3. Existing Flows Tributary to the
Industrial Drive Pump Station 112.5 GPM (PEAK FT,OVV)
The existing flows to this station are bzLSiness and commercial flows with
some businesses being in opezation on a 24 hoar a day basis, This
continual water usage xesults in lower peaking rates when compared to
residential usage; however, we are using a peaking factor of 3.6 which we
are of the opinion is conservative foz these flows. The average daily water
usage from the users in this azea is approximately 45,000 GPD. The peak
sewer flow is therefore estimated at 45,000 x 3,6 ~ 1440 = 112.50 GPM.
4. Summary of Contributory Flow to the Industrial Drive Pump Station
an Orange County School Pump Station 205 GPM (Peak)
b. STAG Project Area 69.7 GPM (Peak)
c. Existing Flow 112.5 GPM (Peak)
TOTAL PEAK FLOW
387.2 GPM (Peak)
As the existing Industrial Drive Pump Station is estimated to have a
pumping rate bf 437 GPM when the L. J. Rogers Pump Station is
reconfigured, this station has the available capacity to accept the peak
flows from the new Orange County School Pump Station and firm the
STAG project area It is also noted that the flow estimates from the
residential users in the STAG azea are very conservative as the average
residential monthly water usage in Mebane is less than 6,000 gallons pez
month, or 200 gallons per day. This value is almost 45% less than the
value used is the computations; therefore, the actual peak, flows will be
less than the computed peak.
Pzepare
Darrell L. ussell, P.E.
February 21, 2006
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Page 4
From: Cecil G. Madden
To: Paul Thames
Date: 3/t/2006 1:02:02 PM
Subject: Re: Orange County - Buckhorn Project
Hello Paul,
Per our conversation of earlier today, it is important for you to understand that all review of your project
has been suspended, until we have received complete written responses to all comments to date.. These
responses must be supported with revised plans and specifications that reflect any/all needed changes. It
must also be supported with complete calculations. Once a complete package has been presented we
will once again resume review.
In response to your email, I received a call from Mr Russell about 10:30 today saying a fax would be
coming from the City of Mebane, and that he would provide some supporting documents by mail, The fax
came at about 10:31. It included a letter from the City of Mebane, a letter from Mr. Russell, and a four
page engineeering report from Mr. Russell,
We do understand that Orange County has a significant need to be able to proceed, so that a school can
be brought on line. We want the County to be able to accomplish their goal. However, the County needs
to serve as the Lead Agent for this project, and assure that a complete submittal is provided in one
package
Our work loads do not allow us to proceed in stepwise manner. Our office does not serve as a
clearinghouse. Please understand that a complete submittal is required. If this project were not funded
through our program, your application would likely be returned as incomplete, At that time you would be
expected to start over, and would be required to provide a new permit fee. We would rather not have you
go down that road.
Please advise if you have further questions regarding this email.
Cecil G. Madden, Jc, P.E.
Supervisor
Design Management Unit
Construction Grants & Loans Section
r91A1715-62n3
r~
Orange County, North Carolina
Proposed Alternative Financing
April 2Q06 COPs Issuance
A B C
March 2006
Proposal Manager's
Recommended
Funding
Proposal
1. School Projects
CHCCS Renovations $5,150,000 $5,150,000
OCS Gravelly Middle School
Construction
$3,500,000
$3,500,000
Total School Projects $8,650,000 $8,650,000
2. Count Projects With Defined Timetables
Animal Services Facility Planning $700,000 $700,000
Seymour Senior Center $4,150,000 $4,150,000
SportsPlex $6,000,000 $6,000,000
Sub-Total County Projects With Defined
Timetables
$10,850,000
$10,850,000
3. Other County Projects Requiring Funding
Conservation Easements $2,000,000 $1,250,000
Efland/Buckhorn Community Water
and Sewer Construction
$500,000
$1,250,000
Sub-Total Other County Projects
Requiring Funding
$2,500,000
$2,500,000
Total Proposed Alternative Financing
for School and County Projects
$22,000,000
$22,000,000
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
rrently Appropriated (Uncommitted)
County Pay-As-You-Go Projects
:cessary to Complete
andlBuckhorn Community Water and
wer Construction)
1
Subject to subsequent BOCC decisions
(as early as March 15, 2006 budget work
session) regarding individual project
funding allocations
D
Possible BOCC
Alternative
$5,150,000
$3,500,000
$8,650,000