Supplement to Jordan Lake Allocation Application

Charlotte Office
CH2MHILL TEL, 704-3329-0073 x232 FAX: [phone]
F A X 919-552-5569 919-733.3553 Total Pages: 7
To: Stephanie Sudano Tony Young From: Leila Goodwin
Company; Town of Holly Springs DWR Date: June 24, 1997

Message:
Attached is revised draft of submittal.

Tony - As per my voice -mail, is this format OK? Also, some specific questions:
1. Did I describe IBT issue correctly? (page 5 bottom, under Wastewater Return Alternatives)

2. Do we need to do anything to address per capita use issue brought up (ast night, or is DWR going to
defend those numbers?

3. Do you need any further discussion of the existing wells, or can you (or Water Supply folks) provide us
with any formal recommendation that they not be used long-term?

4. If you have questions or ask Holly Springs for more information, wil( it need to be submitted by July 23,
or will you be doing your review after that date?

Please call me when you get a chance. I will be in the office through Thursday, then will be gone for 4
weeks. Stephanie and I plan to finalize this document by the end of the week. However, Tommy Esqueda
can address questions while I'm gone,

Leila Goodwin

6-24FAx

DRAFT

June 30,1997

Mr. John Morris, Director
Division of Water Resources
North Carolina Department of l✓nvirgrunent,
Health and Natural Resources
PO Box 27687
Raleigh, NC 27611-7687

Dear Mr. Morris:

Subject: Supplement to Jordan Lake Allocation Application

The Town of Holly Springs submitted an application for a water supply allocation from B.
Everett Jordan Lake to the Division of Water Resources (DWR) in January, 1997. DWR
subsequently recommended that Holly Springs receive an allocation of 0.5 million gallons
per day (mgd), which is less than the amount requested in the application. With this letter,
l am requesting that the DWR consider additional information that supports an allocation
of 2.0 mgd for the Town of Holly Springs_ The attached Suppletrimt to the Jamian , 1997,
Jordan Take Water Supply Allocation Application, documents the need for this allocation to
meet potable water demands through the year 2015.

Piease call our Town Engineer, Stephanie Sudano (919-557-3935), or our consultant, CH2M
HILL (Leila Goodwin, 704-329-0072), if you have any questions.

Sincerely,

Gerald W. Holleman
Mayor, Town of Holly Springs

CLT/6-23LET
c: Bill Lee, Assistant Town Administrator
Stephanie L. Sudano, P.E., Town Engineer
Leila Goodwin, P.E./CH2MHILL

DRAFT

Supplement to the January, 1997

Jordan Lake Water Supply
Allocation Application

Town of Holly Springs

June, 1997

Prepared by CH2MHILL

SUPPLEMENT TO THE JANUARY, 1997 JORDAN LAKE WATER SUPPLY ALLOCATION APPLICATION FOR THE TOWN Of HOLLY SPRINGS

Introduction

This document supplements the Jordan Lake Water Supply Allocation Application for the Town
of Holly Springs, submitted in January, 1997, Based on that document and on subsequent
meetings between Holly Springs and Division of Water Resources (DWR) staff, the DWR
recommended an allocation of 0.5 million gallons per day (mgd) for Holly Springs. The
basis for the DWR recommendations was presented in Appendix F of Jordan Lake Water
Supply Storage Allocation Recommendations in March, 1997.

This Supplement addresses the fallowing issues to support a larger allocation for Lite Town
of Holly Springs.

1. The Town's existing water supply wells are no longer considered a long-term reliable
water source, due to recent taste and odor problems.

2. The water supply contract with Raleigh is not yet in place

3. Transmission facilities must be constructed in order to use water from either Raleigh or
Harnett County.

4. Harnett County has recently applied for a Jordan Lake allocation. Rather than simply
purchase water from Harnett County, Holly Springs prefers holding an independent
allocation.

5. The current allocation of 0.5 mgd does nut allow for the possibility of continuing the
existing contract with Apex for 0.75 mgd.

These issues are addressed in the following sections, which are organized according to the
sections in the January, 1997, submittal.

1. Population and Water Use Projections

DWR population and water use projections (Table 1-1), presented in Appendix F of Jordan
Lake Water Supply Storage Allocation Recommendations in March, 1997, will be used.

TABLE 1.1
Population and Water Use Projections
Town of Holly Springs
Year Population Average Daily Demand
(MGD)
1995 31,500 0.25
2000 10,500 1.1
2000 18,000 1.9
2010 22,400 2.3
2015 27,100 2.8
2020 31,700 3.2
2025 35,800 3.6

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SUPPLEMENT TO THE JANUARY, 1997 JORDAN LAKE WATER SUPPLY ALLOCATION APPLICATION FOR THE TOWN Of HOLLY SPRINGS
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The issues listed above have a significant impact on the Town of Holly Springs current
water supply system yield. The following bullets address the sources included in the
original submittal and how they are treated in this supplement:

• Holly Springs Wells. A yield of 0.37 mgd was included in the January,1997 submittal.
Due to recent taste and odor problems with the wells, they are no longer considered a
reliable source. Therefore, the 0.37 mgd is reduced to zero starting in the year 2000.

• Town of Apex. The current contracted amount of 0.75 mgd is included in 1995, and wiIl
be replaced with the requested Jordan Lake allocation by 2000. This is not changed
from the January,1997 subnttal.

* City of aleigh. While the Town of Holly Springs is working on a contract with Raleigh
for 1.0 mgd, there is no contract in place now. Transmission facilities are expected to be
in place by about 1999.

• Harnett County. Although the Town currently has a contract for 1 mgd of capacity in
Harnett County's water treatment plant, transmission facilities must be constructed
before the water can be used. Construction may be complete by about 2001. The water
from Harnett County will be supplied from Holly Springs' Jordan Lake allocation, and
so is reflected in the requested allocation amount, rather than in the system yield.

The resulting system deficit, and requested Level I Jordan Lake allocation (to meet demands
through 2015), are shown below in Table 1 2.

TABLE 1.2
Population and Water Use Projections
Town of Holly Springs
Year Average Daily System Yield ` System Deficit Proposed Jordan Lake Allocation to
Demand (MGD) (MGD) (MGD) meet Projected Demands (MGD)
1995 0.25 1.12
2000 1.1 1.0 0.1 0.1
2005 1.9 1.0 0.9 1.0
2010 2.3 1.0 1.3 1.5
2015 2.8 1.0 1.8 2.0
' The wells (0.37 mgd} and Apex (0.75 mgd) are included in 1995. It is assumed that after 1995 the 0.75 mgd
from Apex will be part of Holly Springs' allocation, and that the wells will no longer be used.
In 2000 and after, 1.0 mgd is included from the City of Raleigh.

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SUPPLEMENT TO THE JANUARY, 1997 JORDAN LAKE WATER SUPPLY ALLOCATION APPLICATION FOR THE TOWN Of HOLLY SPRINGS
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2. Current Water Supply Sources
Table M shows current water Supply sources for the Town of Holly Spring.
TABLE 2-1
Current Water Supply Sources
Town of HollySprings

Source Location
Source Name County River Basin Source Type Estimated Water Quality
(surface, ground, Yield (excellent,
purchase) good, poor)
Town of Apex (Jordan Lake) Chatham Cape Fear purchase 0.75 mgd' good
Groundwater Well #4 Wake Cape Fear ground 0.0576 poor
mgd
Groundwater Well #5 Wake Cape Fear ground 0.18 mgd poor
Groundwater Well #6 Wake Neuse ground 0.13 mgd poor
Town of Fuquay-Varina Wake Cape Fear/ purchase `' good
Neuse
' Contracted amount.
' Contract for emergency use only, unspecified amount.

3. Alternative Sources

Holly Springs' alternatives for water supply are:

• Jordan Lake - Acquire a dedicated allocation from Jordan Lake, which would be treated
partly at the Cary/Apex WTP (0.75 mgd), and partly by Harnett County. At a
minimum, this needs to include the existing 0.75 mgd obtained from the Town of Apex.

• Harnett County -purchase finished water from Harnett County (beyond the portion of
Holly Springs' Jordan Lake allocation that would be treated by Harnett County).

• City of Raleigh -purchase finished water from the City of Raleigh.

These alternatives are summarized in Table 3-1, A detailed evaluation of each of the
alternatives was presented in the January, 1997 document and is not repeated here. The
only exception is the Jordan Lake alternative involving Harnett County treatment of Holly
Springs' Jordan Lake allocation, That alternative is discussed in more detail in the
subsections below.

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SUPPLEMENT TO THE JANUARY, 1997 JORDAN LAKE WATER SUPPLY ALLOCATION APPLICATION FOR THE TOWN OF HOLLY SPRINGS

TABLE 3-1
Altemative Water Supply Sources
Town of Holly Springs

Altemative Name Estimated Cost Water Quality Environmental Institutional
Yield ($/1000 (excellent, Impacts (minor, Implementation (simple,
(mgd) gal.) good, poor) moderate, major) typical, difficult)
Jordan Lake (through 0.75 $1.87 ` good minor simple
Apex)
Jordan Lake (through 1.25 $2.57 good minor typical
Hamett county)
Harnett County (Cape unknown $2.57 good minor typical
Fear River)
City of Raleigh 1.0 $1.50 good minor typical
Requested allocation to cover amount currently contracted with Apex
Requested allocation to cover 1.0 mgd currently contracted, plus additional amount to be contracted later.
` Unit costs will be higher due to the need for delivery through Cary and Apex. Back capital charges will also
likely increase this unit cost, depending on negotiations with Cary and Apex.
Unit costs are based on the unit cost for purchasing treated water from Harnett County.

3.7 Economic Evaluations

The cost for having Holly Springs' Jordan Lake allocation treated by Hamett County should
be similar to the cost for simply purchasing treated water from Harnett County.

3.2 Environmental Evaluation

The environmental impacts for Harnett County treatment of Holly Springs' Jordan Lake
allocation would be the same as those for purchasing water from Harnett County. Identical
treatment, transmission, and distribution facilities are needed. The only difference would
be that, under dry conditions, the water would come from the water supply pool, thus
reducing the average elevation of Jordan Lake an insignificant amount, rather than from the
Cape Fear River flow.

3.3 Institutional Evaluation

The institutional impacts for Harnett County treatment of Holly Springs' Jordan Lake
allocation would be the same as those for purchasing water from Harnett County. An
additional contracted amount of 0.25 mgd would be needed by about 2013, assuming Apex
still treats 0.75 nnad of Holly Springs' allocation. The To Arn of Holly Springs may elect to
shift the proportional amounts treated by Apex and Harnett County.

3.3 Wastewater Return Alternatives

The wastewater return impacts for having Holly Springs' Jordan Lake allocation treated by
Harnett County would be the same as these for purchasing, water from Harnett County.
Under the proposed allocations, Holly Springs would not need an interbasin transfer (IBT)
certificate, since the water will be discharged into Utley Creek, ultimately flowing into the

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SUPPLEMENT TO THE JANUARY, 1997 JORDAN LAKE WATER SUPPLY ALLOCATION APPLICATION FOR THE TOWN Of HOLLY SPRINGS

Cape Fear River pest the point of withdrawal by Harnett County. The proposed allocation
of 0.75 mgd to be treated by Cary/Apex would be both average day and maximum day
flow, and therefore less than the amount needing an IBT certificate.

4. Conservation and Demand Management

There are no changes or modification to the information presented in January,1997.

5. Plans to Use Jordan Lake

The Town of Holly Springs is applying fora 2.0-mgd allocation from Jordan Lake to meet
water supply demarids through 2015. A portion (0.75 mgd) of the water would continue to
be withdrawn at the existing eastern intake structure and transmitted to the Cary/Apex
WTP via the existing transmission line, This would require no additional facilities.

The remaining 1.25 mgd allocation would be released from the lake for withdrawal by
Harnett County from the Cape Fear River. This is similar to simply purchasing finished
water from Harnett County, but gives Holly Springs a dedicated source of water.

Since the development of eater supply contracts with Harnett County and the City of
Raleigh has proved to be more complicated than expected, the Town of Holly Springs, feels
it's best alternative is to obtain a Jordan Lake allocation. While the above plans are the
preferred means of using the Jordan Lake allocation, Holly Springs will have the option of
building its own water treatment plant, shifting the amounts treated by Cary/Apex and
Harnett County, or contracting with some entity other than Harnett County or Apex for
treatment of the allocation, This allows maximum flexibility for the Town of Holly Springs,

The following schedule is anticipated for Jordan Labe water use and related activities:

Activity Expected Date
Expansion of Cary/Apex WTP 2nd quarter 1999
Completion of Raleigh Connection 3rd quarter 1999
Completion of Harnett County Connection 2001

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