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RECEIVED MANAGEMENT \> t r <<

JUl2 51995, ~ jv
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High Point's Eastside WWTP Expansion S -. rt' t I'.
Preliminary EA Considerations l \ fV ^.1 I 110M. y. \,
DMP Job No. E-1971 (BF) \f IV Y t /J)
Guilford County ~ - } ^ L"yi i [1--'

Dear Mr. Mills: V \Y'

State of North Carolina
Department of Environment,
Health and Natural Resources
Winston-Salem Regional Office

James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
Leesha Fuller, Regional Manager

Mr. Nickie D. Mills, EIT
Davis-Martin-Powell & Assoc., Inc.
218 Gatewood Avenue, Suite 102
High Point, NC 27262

June 26, 1995

Subject:

In response to your written request of June 5, 1995 concerning your preliminary
engineering report and preliminary environmental assessment, the following items should be
given consideration in your analysis:

1. Physical Plant:
a. Flooding concerns at the plant
b. Acquiring 404/401 Certifications for actual expansion
c. 1&1 studies and associated collection system classification and
necessary system improvements
d. High flow treatability and short-circuiting (reduced treatment)
associated with rainfall
e. Flow measurement accuracy during and after significant
rainfall events
f. Alternate disinfection such as Ultraviolet or Ozonation
g. Water reuse and recycling potentials

..

2. Chemical & Physical Processes:
a. Cyanide concerns in waste stream and effluent
b. Phosphorus removal by chemical processes as well as biological
removal efficiency
c. Foaming and color in effluent (previous and future complaints)
d. Color removal and associated benefits to treatment efficiency
e. TOC review and future loading considerations
f. Pretreatment opportunities and potential improvements
g. Land application or other disposal options (incineration, etc.)

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585 Waughtown Street, Winston-Salem, North Carolina 27107-2241 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/lO% post-consumer paper

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The EA or EIS should provide a thorough review of the potential impacts to
downstream natural environments and potential requirements for this discharge if the
Randleman Dam is built. Best available technologies (BATs) may become necessary and
appropriate. If so, the reuse and recycling of water should be given ample consideration.
Flow measurement at this facility during rain events is a concern. The plant is permitted for
16.0 MGD and flows up to 32 MGs are not uncommon. It is our understanding that flow
measurements less than 35 Mgs may be somewhat accurate but that greater flow values are
extremely suspect. Repair and replacement of portions of the collection system should be
given expanded and integral consideration as the WWTP experiences significant high flows
which reduce treatment during storm events (both short and long term events). Expanded
J(f~ ...equalization may provide some buffering; however, major 1&1 should be addressed at the
. 1\ J?(".r source and in an ongoing manner. Failure to reduce 1&1 could jeopardize or negatively
v~'-"'~.. impact expansion of the plant and future municipal growth as well as precipitate flow
~ allocation processes by this Division. Health concerns and third party. suits will likely
\ vJ become more of a potential if insufficient treatment and pass throughs of high flows continue
\ / \1 to be a concern should these waters become water supply waters.

kY~\ -,/.. The Region recommends that you thoroughly review the Compliance Sampl'
p,}.wJ Inspection letter sent to Mr. Linwood O'Neal on March 29, 1995 for additio oems and
f/ considerations. The WSRO is aware that an "Eastside WWTP Evaluation Stu y" was
completed in January by Camp, Dresser and McKee. The Region requested a copy of this
document in order to gain additional insights concerning the WWTP and potential impacts to
the proposed Randleman dam and associated water quality issues. The Region has requested
a copy of this document and would defer making additional comments on any draft High
Point Eastside EAs until after reviewing the study. This study could also provide insight
useful in your EA.

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The Region is unaware of any considerations for the proposed EA to become an EIS;
however, it may behoove DMP and the City of High Point to request a determination as to
which is more appropriate (if not previously done). Comments provided herein are provided
in order to offer additional insights and should not be considered as an official review or
approval of this project. If you have any questions regarding this letter, please call Mr. Ron
Linville, Mr. Jim Johnston or me at [phone].

Sincerely,

M. Steven Mauney
Water Quality Supervisor

cc: Ken Carter, Guilford County Environmental Health Division Director
Michelle Suverkrubbe, Guilford County Planning Dept.
WSRO
Central Files \hipt-exp.eis

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dmp

DAVIS. MARTIN. POWELL & ASSOCIATES, INC.
ENGINEERING · LAND PLANNING · SURVEYING
218 GATEWOOD AVENUE · SUITE 102
HIGH POINT, NC 27262
PHONE [phone] . FAX [phone]

RECEIVED
JUN 0 7 '995
ElW1RON~~r~l~C1ENCES

June 5, 1995

RECEIVED
N.C. Dept. of EHNR
J U L 1 9 1995
Winston-Salem
Regional Office

Re: City of High Point
Eastside Wastewater Treatment
Plant Expansion
Preliminary Engineering Report
& Environmental Assessment
DMP Job No. E-1971 (BF)

NC Division of Environmental Management
Environmental Sciences Branch
Ecological Assessment Group
Attn: Mr. John Dorney
PO Box 29535
Raleigh, NC 27626-0535

Dear Mr. Dorney:

The firms of Hazen & Sawyer, P. C. and Davis-Martin-Powell &
Associates, Inc. have been retained by the City of High Point to
prepare a Preliminary Engineering Report; Facilities Design; and
Construction Management of the proposed expansion of the City of
High Point's Eastside Wastewater Treatment Plant.

The Preliminary Engineering Report will include development of
design criteria, future flow projections, preparation of an
Environmental Assessment, NPDES permitting, estimated costs, and a
tentative implementation schedule. Preliminary projections
indicate that the plant will be expanded from 16 MGD to 24 or 26
MGD and that the proposed expansion will be confined to the
existing plant site and adjacent lands. Enclosed is a quad sheet
indicating the location of the existing plant site.

In order to expedite the preparation of the Environmental
Assessment, we are requesting comments regarding the proposed plant
expansion and Environmental Assessment in advance. Any information
needs, or concerns you can recommend for inclusion in the
Environmental Assessment would be appreciated. We respectfully
request that your comments be returned to us by August 1st so that
we can finalize the Environmental Assessment in a timely manner.

NC Division of Environmental Management
Environmental Sciences Branch
Ecological Assessment Group
Attn: Mr. John Dorney
June 5, 1995
Page -2-

If you have any questions regarding the proposed plant expansion,
Environmental Assessment, or if you need additional information,
please feel free to contact us.

Very truly yours,

NDM/RLM/res

c: Mr. Linwood E. O'Neal, P.E.
Mr. Robert S. Difiore, P.E.
File

RECEIVED
N.C. Dept. of EHNR
J U L 1 9 1995
Winston-Salem'
Regional Office

PREPARED BY :
DAVIS-MARTIN-POWELL Be ASSOC., INC.
ENGINEERING, LAND PLANNING, SURVEYING
HIGH POINT, Ne