NC0078697_Engineering Alternatives Analysis_19930507

State of North Carolina
Department of Lnvironment, Health, and Natural Resources
Asheville Regional Office
James B. Hunt, Jr., Governor Ann B. Orr
Innathan R Howes, Secretary DIVISION OF ENVIRONMENTAL MANAGEMENT Regional Manager
WATER QUALITY SECTION
MEMORANDUM
TO:
THROUGH:
FROM:
May 7, 1993
Sean Goris
Permits and En
Forrest R. Wes
Water Quality
Paul R. White,
Environmental Engineer
MAY 1 ^ t` 93
rvisor'
SUBJECT: RJG, Inc.
Engineering Economic Analysis
NPDES Permit Application NCO078697
Henderson County
Enclosed please find a copy of the Asheville Regional Office staff
report for the above referenced application. I am also providing
Regional comments on the Engineering Economic Analysis forwarded to
you previously.
1. Connection to Sewerage System
We agree with the analysis that there are no sewerage systems in
this area and are not aware of any plans to construct a system.
Therefore, this is not an option.
2. Subsurface Disposal
The analysis indicates that the Henderson County Health Department
could not approve a subsurface system for the project as proposed at
20,000 gpd. We agree that there is inadequate land for a subsurface
system of this size. However, Mr. Green has indicated that the project
might be reduced in scope. He is currently working with the Henderson
InterchangT Building, 59 WNY31in (Mace, Asheville, NC. 28801 • Telephone 704-251G208
An Equal Opp+naniry Affiunative Action Fmpl-wer

Sean Goris
Memorandum
May 7, 1993
Page Two
County Health Department on obtaining a reduced flow subsurface system
in the wooded area on the hill behind the store.
Mr. Green also indicated that the pavement area behind the store
could easily be taken up if this area could be used for a subsurface
system. An existing subsurface system at the back of the store
currently serves the bathrooms in the store. The analysis does not
address this area for a reduced flow system. It is not known if Mr.
Green has discussed this possibility with the Health Department. This
area should be considered for a reduced flow system, perhaps in
combination with the wooded area on the hill currently being
investigated.
3. Spray Irrigation
The analysis states that 25 to 30 acres would need to be
available for spray field. This corresponds to approximately 0.2
inches per week application rate. This application rate appears to be
low. However, it is not anticipated that sufficient land area is
available for the flows requested even at a higher rate. Due to
generally higher buffer requirements for surface disposal as compared
to subsurface, the buffer requirements would severely restrict the
size of a spray irrigation facility at this site.
4. Proposed Discharge System
The Engineering Economic Analysis indicates that the
classification of the receiving stream is C-Trout, being 1 mile
upstream of the B-Trout classification of Lake Summit. Based on
elevations determined by the Asheville Regional Office and provided by
Duke Power Company, the elevation of the water level in the Green
River channel at the time of measurement was 0.2 feet above the water
level at the dam. This and observations of the river, indicate that
the river is affected by the lake water level at this point. The
wasteload allocation should be redetermined based on discharge into
the backwaters of the lake rather than into a river situation.
We agree that there would be no advantage to discharging to
Vernon Creek.
The only treatment option presented was an activated sludge
system with a tertiary filter. While this degree of treatment was not
necessary for the existing wasteload allocation, it should be
considered necessary due to the sensitive nature of the receiving
stream.

Sean Goris
May 7, 1993
Page Two
Based on the quantity of flow regtiest:ed, some type of discharging
treatment system appears to be the only feasible alternative.
However, due to -the current uses of the receiving stream, the physical
situation of the presence of lake backwaters at the discharge point,
and the public opposition to the a discharge, there are some serious
environmental concerns with a stream discharge. It appears that if
the flow may be reduced to an amount that can be handled on site, this
would be a more environmentally sound option.
If you have any questions concerning this issue, please contact
me.
Enclosure

SOC PRIORITY PROJECT: No
IF YES, SOC NUMBER
TO: PERMITS AND ENGINEERING UNIT
WATER QUALITY SECTION
ATTENTION: Sean Goris
DATE: April 30, 1993
NPDES STAFF REPORT AND RECOMMENDATION
COUNTY Henderson
PERMIT NUMBER NCO078697
PART I - GENERAL INFORMATION
1. Facility and Address: RJG Inc.
Route 5, Box 544
Hendersonville, N. C. 28739
2. Date of Investigation: April 6 and 21, 1993
3.
Report Prepared By: Paul R. White
Persons Contacted and Telephone Number: Roscoe J. Green
704-692-7390 (home)
704-685-8439 (store)
S. Directions to Site: The proposed development is located on nine
acres in the northeast quadrant of the intersection of Highway 25
and Green River Road (SR 1106). A gas station/convenience store
is currently located here. The proposed discharge point is across
Green River Road from the property, just upstream of old highway
25 (SR 1265).
6. Discharge Point(s), List for all discharge points:
Latitude: 350 12' 53" Longitude: 820 26' 32"
Attach a USGS map extract and indicate treatment facility site and
discharge point on map.
U.S.G.S. Quad No. G9NW U.S.G.S. Quad Name Zirconia
Page 1

7. Site size and expansion area consistent with application? yes
Yes No If No, explain:
8. Topography (relationship to flood plain included): Site is
located on a low mountain with 25% to 35% sideslopes. Slopes
decrease to 10% on the south end of the property. Not in
flood plain.
9. Location of nearest dwelling: >100 feet
10. Receiving stream or affected surface waters: Green River
a. Classification: According to the schedule of classifications,
Green River is classified as C-Trout from its source to mouth
in Lake Summit at elevation 2011. The classification of
Green River (Lake Summit below elevation 2011) changes to
B-Trout at the mouth. This is a confusing description since
the lake water level is commonly 0.1 to 0.2 feet above the
top of the dam during wet weather, and the elevation of the
top of the dam is 2012.6 feet MSL per Duke Power Company.
An independent measurement of the water level at the proposed
discharge point on April 21, 1993, indicated that the water
level was at 2013 feet and was several feet deep. The lake
level at this time was as 2012.8 feet according to Duke
Power. Upon observation, the water level did not appear to
drop significantly between this point and open water. In
addition, the velocity was sluggish at this point and at a
point 1800 feet upstream, as compared to the river at a point
one mile upstream. This indicates that the lake actually
backs up into the river channel..
The proposed discharge point should be considered to be
discharging into Class B waters of Lake Summit.
b. River Basin and Subbasin No.: Broad 03-08-03
C. Describe receiving stream features and pertinent downstream
uses: The proposed discharge point is in the headwaters of
Lake Summit, a primary recreation lake. Pertinent downstream
uses include fish and wildlife propagation, fishing,
swimming, water skiing, and summer camps.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted 0.020 MGD (Ultimate
Design Capacity)
Page 2

2.
3.
4.
b. What is the current permitted capacity of the Wastewater
Treatment facility? No existing .facilities.
C. Actual treatment capacity of the current facility (current
design capacity n/a
d. Date(s) and construction activities allowed by previous
AuthoNizations to Construct issued in the previous two years:
none
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities: n/a
f. Please provide a description of proposed wastewater treatment
facilities: Extended aeration package wastewater treatment
plant.
g. Possible toxic impacts to surface waters: Ammonia, chlorine,
cleaning chemicals.
h. Pretreatment Program (POTWs only): n/a
in development approved
should be required not needed
Residuals handling and utilization/disposal scheme: None specified
a. If residuals are being land applied, please specify DEM
Permit Number
Residuals Contractor
Telephone Number
b. Residuals stabilization: PSRP PFRP OTHER
c. Landfill:
d. Other disposal/utilization scheme (Specify):
Treatment plant classification (attach completed rating sheet): II
SIC Codes(s): 4952
Wastewater Code(s) of actual wastewater, not particular facilities
i.e., non -contact cooling water discharge from a metal plating
company would be 14, not 56.
Primary 02 Secondary 13, 10
Main Treatment Unit Code: 0607
Page 3

PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds
or are any public monies involved. (municipals only)? no
2. Special monitoring or limitations (including toxicity) requests:
none
3. Important SOC, JOC, or Compliance Schedule dates: (Please
indicate) n/a
Date
Submission of Plans and Specifications
Begin Construction
Complete Construction
4. Alternative Analysis Evaluation: Has the facility evaluated all
of the non -discharge options available. Please provide regional
perspective for.each option evaluated.
Spray Irrigation: insufficient area due to buffer requirements.
Connection to Regional Sewer System: none available.
Subsurface: Mr. Green is currently working with the Henderson
County Health Department on obtaining a reduced flow subsurface
system.
Other disposal options: There is insufficient area for an on -site
disposal system for 20,000 gpd, however, a subsurface or drip
irrigation system might be developed for a much lesser flow.
Soils information indicate an acceptance rate of about 0.3
gpd/ft2. Due to the odd size of the property, buffers, existing
buildings, and the fact that the south half has been excavated,
only around 2/3 acre are useable for an on -site system at this
location. This area is currently wooded. There is another small
area across Hwy 25 to the west which might be used, however, the
expense would be greater due to the road crossing.
Mr. Green indicated that the paved parking lot behind the store
could easily be taken up if this area could be used for a
subsurface system. An existing subsurface system at the back of
the store currently serves the bathrooms in the store.
5. Other Special Items:
Page 4

PART IV - EVALUATION AND RECOMMENDATIONS
The alternatives analysis is based on the need for a design flow
of 20,000 gpd. The library (150 gpd) and the gas station (750
gpd) are currently served by stibstirface systems. No problems are
known to be occurring with these systems. Mr. Green has indicated
that he might scale back the project to a size which could be
handled on' site, however, he wishes to keep the option open for
surface discharge at the present time.
Due to the presence of swimming just downstream of the proposed
discharge, the public opposition to a discharge into the lake, and
the difficulty encountered with small activated sludge systems
serving restaurants, it is recommended that the permit be denied.
pacli'-L kwk�
Signature of Report Preparer
�aer Quality Regional Supervisor
s �
Da e
Page 5

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Owner of Contact -------
Mailing Address:
County:i���SOlU i 7 e!ephone: 70�{_6�Z-?39Q __
NPDES Permit No. NC00_7_g&1?7 Nondisc. Per. No.
lssueDate:_ 1vl1,4 Expiration Date:_ -VIA
Existing Facility ,yo New Facility L'1�y�'DSEl�
.Rated By: P4UL W#LTG Date: q 36 - 9
Reviewed (Train. & Cert.) Reg. Office
Reviewed (Train. & Cert.) Central Office
ORCAll,,9- Grade_
Plant Class: (circle one) I
II III IV Total Points 1�/ _
ITEM POINTS
(5) SECONDARY TREATMENT UNITS
(1 ) Industrial Pretreatment Units and/or
(a) Carbonaceous Stage
(i)Aeration - High Purify Oxygen System
20
Industrial Pretreatment Program
(see definition No. 33)
4
.....
Diffused Air System ...........
-i
(2) DESIGN FLOW OF PLANT IN GPD
Mechch
Mechanical Air System {fixed,
(not applicable to non -contaminated cooling waters, sludge
floating
Separate or rotor) ..... • • .......
8
handling facilities for wafer purification plants, totally
(i i) Trickling Filler
closed cycle systems (def. No. 11), and facilities
High Rate
consisting only of Item (4) (d) or Items (4) (d) and -(11)
0 -- 20,000
(d)
. ... ............ • • •
Standard Rate ...............
7
5
..........................
20,001 -• 50,000 ..........................
50,001 -- 100-000.....................
2
3
Packed Tower ...............
(i i i) Biological Aerated Filler or Aerated
5
100,001 -- 250.000 ..........................
Biological Filler ......................
(iv) Aerated Lagoons
10
250,001 -- 500.000 ............
5
..... s ............... .
10
500,001--1,000,000 ..........................
1.000.001 -- 2,000.000 ........................
8
10
(v) Rotating Biological Contactors ....... .
10
2,000,001 (and up) - rate 1 point additional for each
(vi) Sand Filters-
200,000 gpd capacity up to a
intermittent biological
2
maximum of 30
Design Flow {gpd)
.....
recirculating biological .. . ..
3
(3) PRELIMINARY UNITS (see definition no. 32)
(vii) Stabilization Lagoons ...................
(viii)Claritier _
5
(a) Bar Screens ................................
(ix) Single stage system for combined.
or
(b) Mechanical Screens, Static Screens or
carbonaceous removal of BOD and
Comminuting Devices ...........
2
nitrogenous removal by nitrification
.............
(c) Grit Removal ...............................
1
(see def. No. 12) (Points for this item
or
have to be in addition to items (5) (a)
(d) Mechanical or Aerated Grit Removal ...........
2
() throw 9h (5} (a) (vin) ............. . , . .
(x) Nutrient
8
(e) Flow Measuring Device ............
additions to enhance BOD
or
removal
5
(f) Instrumented Flow Measurement ..............
2
(xi) Biological Culture ("Super Bugs')• addition
(g) Preaeration................................
2
to enhance organic compound removal .....
5
(b) Nitrogenous Stage
(h) Influent Flow -Equalization ...................
2
(i) Aeration - High Pudly Oxygen System .....
20
(i) Grease or Oil Separators - Gravity ..........
2
Air System ..... .
10
Mechanical .
3
Mechanical Air System (fixed,
Dissolved Air Flotation.
8
floating. or rotor) ,
8
6) Prechlorination ..............................
5
Separate Sludge Reaeration .....
3
(ii) Trickling Filler -
(4) PRIMARY TREATMENT UNITS
High Rate ..............
7
(a) Septic Tank (see definition no. 43) ..............
2
Standard Rate ............
5
(b) Imhoff Tank ..................................
(c) Primary Clarifiers ............................
5
5
Packed Tower ............
(i i i } Biological Aerated Fitter or Aerated
5
(d) Settling Ponds or Settling Tanks for Inorganic
Biological Filter , , , , , , , , , , , , , , , , , , , , , , , , ,
(iv} Rotating Biological Contactors
1 0
10
Non -toxic Materials (sludge handling facilities
............
(iv) Sand Filter -
Filter -
for water purification plants, sand, gravel,
stone. and other mining operations except
intermittent
intermittent biological ... .....
2
recreational activities such as gem or goldrecirculating
biological ..
9 • • • •
(vi) Clarilier
3
mining) ......................................
2
................................
5

} ! I l!•-f t �' c �I i /'.I )V/•!:f ., .. I t ti f•, I r!; r: , t ..
without C311:011 regc:ncr31101t
With carbon ((;-genefatiUr► ....... .
(t)) powdered or Granular Activated Carbon Feed
wilhout carbon regeneration ................ .
with carbon regeneration .................. .
(c) Ai; Stripping .................... ........
(d) Denitrification Process (separate process) . . .
(e) Electrodialysis ........ ..................... .
(g) Ion Exchange ................................
(h) Land Application of Treated Effluent
(see definition no. 22b) (not Wplicable for
sand. gravel, stone and other similar mining
operations)
(i) on agriculturally managed sites (See del.
No. 4) ................................
(ii) by high rate infiltration on non -agriculturally
managed sites (includes rotary distributors
and similar fixed nozzle systems) ...........
(iii) by subsurface disposal (includes low pressure
pipe systems and gravity systems except at
plants consisting of septic lank and nitrifica-
tion lines only) .............................
W Microscreens..................................
(j) Phosphorus Remo -/al by Biological Processes
(See def. No. 26) ............................
(k) Polishing Ponds - without aeration .......
With aeration ..........
(1) Post Aeration - cascade ..............
diffused or mechanical .. .
(m) Reverse Osmosis .............................. .
(n) Sand or Mixed -Media Filters -. low rate ...........
high rate ..........
(o) Treatment processes for removal of metal or
cyanide....................................
(p) Treatment processes for removal of toxic
materials other than metal or cyanide .........
• l-
l I i! 1!,lt,i•, f•,; %Il :•l ., l t't!: {.,j {.,1..f Ilfitll(i
(not apphcal)le m chert}ical additions rated as item
t (3) (1). (5) (a) (xi). (6) (a). (6) (b). (Y) (b). (7) (t}.
(9) (a), (9) (b), ur (9) (c) 5 points each: List:
5
10 - .....
5
5 (t 1) IJISCf I I.ANEOUS UNITS
5 (a) Holding funds, Holding Tanks or Settling Ponds
for Organic or Toxic Materials including wastes
from mining operations containing nitrogen and/or
phosphorous compounds in amounts significantly
greater than is common for domestic wastewater ..........
4
(b) Effluent Flow Equalization (not applicable to storage
basins which are inherent in land application systems).
2
i 0 (c) Stage Discharge (not applicable to storage basins
inherent in land application systems .......................................
(d) Pumps.........:...................................................................................^ ....
4 (e) Stand -By Power Supply.
3
- (1) Thermal Pollution Conl;ol Device ...........................................
3
5
20
2
5
0
5
5
2
5
15
15
_UDGE TREATMENT
(a)
Sludge Digestion Tank - Heated ...............
10
Aerobic ...............
5
Unheated...... .......
3
(b)
Sludge Stabilization (chemical or thermal) .... ...
5
(c)
Sludge Drying Beds - Gravity........ .... . . . . .
2
Vacuum Assisted .......
5
(d)
Sludge Elutriation .............................
5
(e)
Sludge Conditioner (chemical or thermal) ........
5
(f)
Sludge Thickener (gravity) ......................
5
(g)
Dissolved Air Flotation Unit
(not applicable to a unit rates as (3) (i) .........
8
(h)
Sludge Gas Utilization (including gas storage) ....
2
(i)
Sludge Holding Tank - Aerated.......... . . . . ..
Non -aerated...... .. . . . .
2
(j)
Sludge Incinerator - (not including activated
carbon regeneration) .....
10
(k)
Vacuum Filler, Centrifuge or Filter Press or other
similar dewatering devices....
10
SLUDGE DISPOSAL (including incine(aled ash)
(a) Lagoons ........................................ 2
(b)
Land Application (surface and subsurface)
(see definition 22a)
-where the facility holds the land app. permit ...
10
-by contracting to a land application operator who
holds the land application permit .............C.2)
-land application of sludge by a contractor who do
not hold the permit for the wastewater treatment
facility where the sludge is generated .........
10
(c)
Landlilled (burial) .............................
5
DISINFECTION
(a)
Chlorination .............................
(b)
Dechlorination ........................
(c) Ozone ..............................
Z3
(d)
Radiation ..........................
5
TOTAL POINTS
CLASSIFICATION
Class I ........................................................... 5 - 25 Points
Class 11........................................................ 26- 50 Points
Class III ....................................................... 51- 65 Points
ClassIV ........................................................ 66- Up Points
Facilities having a rating of one through four points, inclusive.
do not require a certified operator. Classification of all other
facilities requires a comparable grade operator in responsible
charge.
Facilities having an activated sludge process will be assigned
a minimum classification of Class II.
Facilities having treatment processes for the removal of metal
or cyanide will be assigned a minimum classification of Class 11.
Facilities having treatment processes for the biological removal
of phosphorus will be assigned a minimum classification of Class
Ill.
In -plant processes and related control equipment which are an
integral part of industrial production shall not be considered waste
treatment. Likewise, discharges of wastewater from residences
having a design flow of 1.000 gpd or less. shall not be subject to
rating.
ADDITIONAL COMMENTS-