NC0024911_Permit (Issuance)_20110225

NPDES DOCUMENT SCANNIN` COVER SHEET
NC0024911
MSD Buncombe County WWTP
NPDES Permit:
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Staff Report
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
February 25, 2011
This document is printed on reuse paper - iigptiore any
content on the reirerse side

ern
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Govemor Director Secretary
Mr. Tom Hartye, PE
MSD of Buncombe County
2028 Riverside Drive
Asheville, North Carolina. 28804
{
Dear Mr. Hartye:
February 25, 2011
Subject: Issuance of NPDES Permit
NC0024911
French Broad River WRF
Buncombe County
Division personnel have reviewed and approved your application for renewal of the
subject permit. Accordingly, we are forwarding the attached NPDES discharge permit. 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 October 15, 2007 (or as subsequently amended).
This final permit includes following major changes from the Draft Permit:
• The Special Condition entitled "Ammonia Reduction Evaluation" was added to the
permit, please see Special Condition A. (7.).
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748
Internet www.ncwaterquattty.org
An Equal Opportunity t Affirmative Action Employer
Nose Carolina
�turally

This final permit maintains the following changes contained in the Draft Permit:
• A cyanide limit has been removed and monitoring frequency was reduced to quarterly
based on the results of the Reasonable Potential Analysis. .
• Monitoring frequencies for copper, zinc, and silver were reduced to quarterly based
on the review of the effluent data.
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 demand is made, this decision shall be
final and binding.
Please note that this permit is not transferable except after notice to the Division.
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 or permits required by the
Division of Land Resources, the Coastal Area Management Act or any other Federal or
Local governmental permit that may be required. If you have any questions concerning
this permit, please contact Sergei Chernikov at telephone number [phone].
O41
Of
H. Sullins
cc: NPDES Files
Central Files
Asheville Regional Office / Surface Water Protection
Aquatic Toxicology Unit (e-copy)
EPA Region IV (e-copy)
Debra Watts (e-copy)
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] \ FAX: [phone] \ Customer Service: 1-877-623-6748
Internet: www.ncwaterquality.org
An Equal Opportunity 1 Affirmative Action Employer
One
NorthCarolina
Naturally

Permit NC0024911
•
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, the
Metropolitan Sewerage District of Buncombe County
is hereby authorized to discharge wastewater from a facility located at the
French Broad River WRF
NC Highway 251
North of Asheville
Buncombe County
to receiving waters designated as French Broad River in the French Broad 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 April 1, 2011.
This permit and authorization to discharge shall expire at midnight on December 31, 2015.
Signed this day February 25, 2011.
n H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit NC0024911
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of
this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the
exclusive authority to operate and discharge from this facility arises under the permit conditions, requirements,
terms, and provisions included herein.
The Metropolitan Sewerage District of Buncombe County
is hereby authorized to:
•
1. Continue to. operate..an..existing 40 MGD. wastewater treatment system .consisting-.
of a Rotating Biological Contactor (RBC) system with the following components:
• Two mechanical bar screens
• Three aerated grit chambers with grease removal
• Three influent pumps with capacity of 35 MGD each.
• Instrumental flow measurement
• Seven 250-micron primary microscreens (currently not in service)
• Eighteen 27-micron secondary microscreens (currently not in service)
• 1st, 2nd, and 3rd stage RBCs (152 total)
• Three intermediate pumps
• Four intermediate clarifier cells (total volume 2 MG)
• Effluent chlorination (liquid sodium hypochlorite)
• Effluent de -chlorination (liquid sodium bi-sulfate))
• Two gravity sludge thickeners -100 ft diameter each
• Four gravity belt thickeners (currently not in service)
• Two anaerobic digesters (currently not in service)
• Two 2.5-meter belt filter presses
• Fluidized bed incinerator (40 DT/day rated)
• Alkaline stabilization facility (40 DT/day rated)
• 2 MW back-up generator (diesel)
• Two 450 KW gas generators
• Three 850 KW hydro turbines (French Braod River source)
• 17-acre ash storage lagoon
• SCADA -PC/PLC Control System - full automated control of WRF
The facility is located north of Asheville at the MSD Buncombe County WRF on
NC Highway 251 in Buncombe County;
2. Discharge from said treatment works at the location specified on the attached
map into the French Broad River, classified B waters in the French Broad Basin.

NC00024911 - MSD Buncombe County
Latitude:
Longitude:
Quad #:
Stream Class:
Receiving Stream:
Permitted Flow:
35°39'02"
82°35'54"
ESNE/Weaverville
B
French Broad River
40.0 MGD
Sub -Basin:
04-03-02
Nl ctropol itan Sewerage*District of Buncombe County
NC0D24911
MSD-Buncombe WWTP
North

Permit NC0024911
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMERTS;; _
During the period beginning on the effective date of the permit and lasting until expiration,
the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited
and monitored by the Permittee as specified below:
PARAMETER
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Weekly ,
Average
Daily
Maximum
Measurement
Frequency _
Sample
Type
Sample
Locations _
Flow
40 MGD
Continuous
Recording
InfEffluluent or
ent
CBOD, 5-day (20°C)2
25.0 mg/L
40.0 mg/L
Daily
Composite
Influent &
Effluent
Total Suspended Solids2
30.0 mg/L
45.0 mg/L
Daily
Composite
Influent &
Effluent
NH3 as N
-
' -
Daily
Composite
. Effluent
Dissolved Oxygen
Daily average > 5.0 mg/L
Daily
Grab
Effluent
Dissolved Oxygen
Variable'
Grab
U & D
Fecal Coliform
(geometric mean)
200/100
mL
400/100
mL
Daily
Grab
Effluent
Fecal Coliform
(geometric mean)
Variable'
Grab
U & D
Total Residual Chlorine3
•
28 µg/L
Daily
Grab
• Effluent
Temperature (°C)
Daily
Grab
Effluent
U & D
Total Nitrogen
(NO2+NO3+TKN)
Quarterly
Composite
Effluent
Total Phosphorus
Quarterly
Composite
Effluent
Conductivity
Daily
Grab
Effluent
U & D ,
Quarterly
Grab
Effluent
_Cyanides
Total Copper
Quarterly
Composite
Effluent
Total Zinc
Quarterly
Composite
Effluent
Total Silver
Quarterly
Composite
Effluent
pH
Between 6.0 and 9.0 standard units
Daily
Grab
Effluent
Chronic Toxicitys
Quarterly
Composite
Effluent
Annual Pollutant Scan6
Annual
Grab
Effluent
Footnotes:
1. U= Upstream at dam discharge to fish ladder adjacent to intake flume to the hydroelectric plant (Location is
approximately 2700 feet upstream of the hydroelectric plant). D = Downstream at Ledges Park. Upstream
and downstream samples shall be grab samples collected three times per week during June, July, August
and September then once per week in the remaining months of the year.
2. The monthly average effluent CBODs and Total Suspended Solids concentrations shall not exceed 15% of
the respective influent value (85% removal).
3. Limit and monitoring requirements apply only, if chlorine is used for disinfection. The facility shall report all
effluent TRC values reported by a NC certified laboratory including field certified. However, effluent values
below 50 µg/L will be treated as zero for compliance purposes.
4. The Division shall consider all cyanide values reported below 10 µg/L to be 'zero" for compliance purposes.
However, Discharge Monitoring Reports (DMRs) shall record all values reported by a North Carolina -
certified laboratory (even if these values fall below 10 RA).
5. Whole effluent toxicity will be monitored using the Pass/Fail Chronic Toxicity test with Ceriodaphnia at 12%.
Samples shall be taken in February, May, August & November; see A. (2.).
6. See special condition A. (6).
There shall be no discharge of floating solids or visible foam in other than trace amounts

Permit.NC0024911 '
A. (2) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration of 12%.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined
in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998,
or subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised -February 1998) or subsequent versions. The tests will be performed during the months of
February, May, August and November. Effluent sampling for this testing shall be performed at the
NPDES permitted final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below
the permit limit," hen-i tiltip'le-concentration testing -shall be`perfoniied at a minimum yin each of the
two following months as described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test
Procedure" (Revised -February 1998) or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean of the
highest concentration having no detectable impairment of reproduction or survival and the lowest
concentration that does have a detectable impairment of reproduction or survival. The definition of
"detectable impairment," collection methods, exposure regimes, and further statistical methods are
specified in the "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -
February 1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the months in which tests were performed, using the
parameter code TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally,
DWQ Form AT-3 (original) is to be sent to the following address:
Attention: North Carolina Division of Water Quality
Environmental Sciences Section
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no
later than 30 days after the end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and
all concentration/response data, and be certified by laboratory supervisor and ORC or approved
designate signature. Total residual chlorine of the effluent toxicity sample must be measured and
reported if chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required, the permittee will complete the information located at the top of the aquatic toxicity (AT)
test form indicating the facility name, permit number, pipe number, county, and the month/year of
the report with the notation of "No Flow" in the comment area of the form. The report shall be
submitted to the Environmental Sciences Section at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required,
monitoring will be required during the following month.
Should any test data from this monitoring requirement or tests performed by the North Carolina
Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re-
opened and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival, minimum control organism reproduction, and appropriate environmental controls, shall constitute an
invalid test and will require immediate follow-up testing to be completed no later than the last day of the month
following the month of the initial monitoring.
•

Permit NC0024911
A. (3) PRETREATMENT.MONITORING CLARIFICATION
Ground Water remediation sites discharging to MSD Buncombe WRF with locally issued permits
shall be considered as Non -Significant Industrial Users and shall have no specific requirements for
parameter limits or monitoring frequency if they do not discharge more than 25,000 gallons of
industrial process wastewater per day, they do not discharge more than 5 % of the Maximum
Allowable Headworks Loading (MAHL) of any pollutant to the MSD Buncombe WRF, they are not a 40
CFR regulated Categorical Industry, or they do not in the opinion of the Director of MSD Buncombe
have the potential to upset or interfere with the operation of the WRF. The Director of MSD WRF
shall enforce the Sewer Use Ordinance, permit, limit, monitor, and inspect all dischargers to his WRF
as needed to assure proper operation and compliance with all NPDES effluent limits including Whole
Effluent Toxicity.
A. (4) GROUNDWATER REQUIREMENTS -
1. Sampling Requirements:
a. Existing groundwater monitoring wells MW-1, MW-2, MW-3, and MW-4 shall be
sampled every January, June, and October. For each sampling event, samples from
each well shall be analyzed for the parameters listed below:
Arsenic
Lead
Silver
Barium
Mercury
Total Dissolved Solids
Chloride
Total Ammonia
Nitrogen
Total Organic Carbon
Chromium
Nitrate -Nitrogen
Water Level
Fecal Coliform
.
pH
Volatile Organic
Compounds
(in October only)
Water levels in the groundwater monitoring wells shall be measured prior to sampling
the groundwater for the remaining parameters. The depth to water in each well shall
be measured from the surveyed point on the top of the casing, which shall be surveyed
relative to a common datum.
b. Volatile organic compounds (VOCs) shall be analyzed using one of the following
methods:
i. Standard Method 6200C (PQL at 0.5 µg/ L or less),
H. Standard Method 6200B (PQL at 0.5 µg/ L or less),
iii. EPA Method 8021 (Low Concentration, PQL at 0.5 µg/L or less),
iv. EPA Method 8260 (Low Concentration, PQL at 0.5 µg/L or less), or
v. Another method with prior approval by the Aquifer Protection Section Chief.
Any of the referenced methods used for VOCs shall, at a minimum, include all of the
constituents listed in Table 6200:I of Standard Method 6200. Any method used shall
provide a PQL at 0.5 µg/ L or less, which shall be supported by laboratory proficiency
studies required by the Division's Laboratory Certification Unit. Any constituents.
detected above the MDL, but below the PQL at 0.5 µg/L, shall be qualified (i.e.,
estimated) and reported.
c. Any laboratory selected to analyze parameters shall be Division -certified for those
parameters required.

•
Permit NC0024911
. Reporting/Documentation .Requirements:
•
a. The results of the sampling and analysis shall be received on the. most -recent version
of "Groundwater Quality Monitoring: Compliance Report Form" (i.e., GW-59 Form) with
copies of the laboratory analyses by the Division on or before the last working day of
the month following the sampling month.
b. All reports, maps, and other documents required in the "Groundwater Requirements"
section of this permit shall be mailed to the following address:
• NCDENR-DWQ •
Information Processing Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
,Updated blank forms may ....be downloaded from . ; the web .• site
http: / %portal.ncdenr.org/web/wq/aps or requested from the address listed above.
3. Applicable Boundary Requirements:
a. The Compliance Boundary is specified by regulations in 15A NCAC 2L (i.e.,
"Groundwater Classifications and Standards"). The Compliance Boundary for the
disposal system individually permitted prior to December 30, 1983 is established at
either 500 feet from the waste disposal area, or at the property boundary, whichever is
closest to the waste disposal area. An exceedance of Groundwater Quality Standards
at or beyond the Compliance Boundary is subject to remediation action according to
15A NCAC 2L .0106 (c).
4. Additional Requirements:
a. Any additional groundwater quality monitoring, as deemed necessary by the Division,
shall be provided.
A. (5) ASH STORAGE LAGOON
MSD Buncombe is permitted to operate a 17-acre lagoon for the purpose of storing incinerator ash.
Effluent from this lagoon is sent to the head of the plant for treatment. No other materials may be
stored in the lagoon without prior Division notification.
• „

Permit NC0024911
•
A. (6.) EFFLUENT POLLUTANT SCAN
The permittee shall perform an annual effluent pollutant scan for all parameters listed in the table
below (in accordance with 40 CFR Part 136). The annual effluent pollutant scan samples shall
represent seasonal (summer, winter, fall, spring) variations over the 5-year permit cycle. Unless
otherwise indicated, metals shall be analyzed as "total recoverable." Additionally, the method
detection level and the minimum level shall be the most sensitive as provided by the appropriate
analytical procedure.
Ammonia (as N)
Chlorine (total residual, TRC)
Dissolved oxygen
Nitrate / Nitrite _ • . .
Total Kjeldahl nitrogen
Oil and grease
Total Phosphorus
Total dissolved solids
Hardness
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper
Lead
Mercury
Nickel
Selenium
Silver
Thallium
Zinc
Cyanide
Total phenolic compounds
Volatile organic compounds:
Acrolein
Acrylonitrile
Benzene
Bromoform
Carbon tetrachloride
Chlorobenzene
Chlorodibromomethane
Chloroethane
2-chloroethylvinyl ether
Chloroform
Dichlorobromomethane
1, 1 -dichloroethane
1,2-dichloroethane
Trans-1,2-dichloroethylene
1,1-dichloroethylene
1,2-dichloropropane
1,3r.dichloropropylene
Ethylbenzene
Methyl bromide
Methyl chloride
Methylene chloride
1,1,2,2-tetrachloroethane
Tetrachloroethylene
Toluene
1,1,1-trichloroethane
1,1,2-trichloroethane
Trichloroethylene
Vinyl chloride
Acid -extractable compounds:
P-chloro-m-cresol
2-chlorophenol
2,4-dichlorophenol
2,4-dimethylphenol
4,6-dinitro-o-cresol
2,4-dinitrophenol
2-nitrophenol
4-nitrophenol
Pentachlorophenol
Phenol
2,4,6-trichlorophenol
Base -neutral compounds:
Acenaphthene
Acenaphthylene
Anthracene
Benzidine
Benzo(a)anthracene
Benzo(a)pyrene
3,4 benzofluoranthene
Benzo(ghi)perylene
Benzo(k)fluoranthene
Bis (2-chloroethoxy) methane
Bis (2-chloroethyl) ether
Bis (2-chloroisopropyl) ether
Bis (2-ethylhexyl) phthalate
4-bromophenyl phenyl ether
Butyl benzyl phthalate
2-chloronaphthalene
4-chlorophenyl phenyl ether
Chrysene
Di-n-butyl phthalate
Di-n-octyl phthalate
Dibenzo(a,h)anthracene
1,2-dichlorobenzene
1,3-dichlorobenzene
1,4-dichlorobenzene
3,3-dichlorobenzidine
Diethyl phthalate
Dimethyl phthalate
2,4-dinitrotoluene
2,6-dinitrotoluene
1,2-diphenylhydrazine
Fluoranthene
Fluorene
Hexachlorobenzene
Hexachlorobutadiene
Hexachlorocyclo-pentadiene
Hexachloroethane
Indeno(1,2,3-cd)pyrene
Isophorone
Naphthalene
Nitrobenzene
N-nitrosodi-n-propylamine
N-nitrosodimethylamine
N-nitrosodiphenylamine
Phenanthrene
Pyrene
1,2,4-trichlorobenzene
Test results shall be reported to the Division in DWQ Form- DMR-PPA1 or in a form approved by the
Director, within 90 days of sampling. A copy of the report shall be submitted to Central Files to the
following address: Division of Water Quality, Water Quality Section, 1617 Mail Service Center,
Raleigh, North Carolina 27699-1617.

Permit NC0024911
-A (7.) ..' AMMONLAIMUCTION EVAtmenON
The permittee shall evaluate the feasibility and cost for the following ammonia reduction scenarios:
(1) optimizing ammonia removal at the current plant via operational improvements; and (2) upgrading
the plant to meet summer ammonia limits of 6.9 mg/L (Monthly Average) and 20.7 mg/L (Weekly
Average),and winter limits of 17 mg/L (Monthly Average) and 35 mg/L (Weekly Average). Summer is
defined as April 1 through October 31. This evaluation must be submitted within 4.5 years of the
permit effective date. The study shall include 36 downstream monthly sampling events for ammonia
at the location specified on the attached map, approximately 3,000 ft. from the discharge.
•

Chernikov, Sergei
From: Kiviniemi, John [[e-mail]]
Sent: Wednesday, February 02, 2011 12:52 PM
To: Chernikov, Sergei
Subject: RE: Map
Let's say approximately 3000 ft. +/- (as mentioned we will likely be incorporating more comprehensive
monitoring as a function of the study but at least this defines where the 36 required monitoring samples are
to be taken). JK
From: Chernikov, Sergei [mailto:[e-mail]]
Sent: Wednesday, February 02, 2011 12:36 PM
To: Kiviniemi, John
Subject: RE: Map
John,
Would it be acceptable if we state that the sampling point is located approximately 2,850 ft from the discharge?
Thank you!
Sergei
Sergei Chernikov, Ph.D.
Environmental Engineer II
Complex Permitting Unit
Phone: [phone], fax [phone]
1617 Mail Service Center
Raleigh, NC 27699-1617
Express mail: 512 North Salisbury St.
Raleigh, NC 27606
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.
From: Kiviniemi, John [maiito:[e-mail]]
Sent: Wednesday, February 02, 2011 12:34 PM
To: Chernikov, Sergei
Subject: RE: Map
The distance from the point the effluent enters the hydro flume to the northern most end of the hydro tailrace
(where it joins the main body of the river) is 1,852 ft. (0.35 mile). The aerial map shows a riffle section
immediately downstream of this location that can be accessed relatively easily which could also serve as a
defined sampling location and truly assess potential in -stream impacts — I would guess it could add another
1,000 ft. +/-
From: Chernikov, Sergei [mailto:[e-mail]]
Sent: Wednesday, February 02, 2011 11:21 AM
To: Kiviniemi, John
Subject: RE: Map
John,
1

y. .
What is the distance between the discharge and this location?
Thank you!
Sergei
Sergei Chernikov, Ph.D.
Environmental Engineer II
Complex Permitting Unit
Phone: [phone], fax [phone]
1617 Mail Service Center
Raleigh, NC 27699-1617
Express mail: 512 North Salisbury St.
Raleigh, NC 27606
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.
From: Kiviniemi, John [mailto:[e-mail]]
Sent: Monday, January 31, 2011 1:08 PM
To: Chernikov, Sergei
Subject: RE: Map
I think the noted location would provide the most conservative approach in terms of assessing in -stream
impacts. However we will incorporate a comprehensive approach to in -stream monitoring — identifying
upstream and all contributory downstream impacts. Preliminary data indicates 0.3 mg/1 range downstream
of MSD WRF — clearly well below the defined 1.0 mg/1 86 1.8 mg/1 in -stream standards for limits
development. Map is in the mail. JK
From: Chernikov, Sergei [mailto:[e-mail]]
Sent: Monday, January 31, 2011 1:01 PM
To: Kiviniemi, John
Subject: RE: Map
John,
Attached is the permit that will be issued as soon as we have the map and identified location for sampling. I would
suggest that we identify location on the map where we would like you to sample for 36 months. You suggestion of
location sounds good: where the hydro tailrace comes into the main body of the French Broad River — or
immediately downstream of this location. If you feel the need for additional sampling, we would welcome that,
but would not specify it in the permit.
Sergei
Sergei Chernikov, Ph.D.
Environmental Engineer II
Complex Permitting Unit
Phone: [phone], fax [phone]
1617 Mail Service Center
Raleigh, NC 27699-1617
Express mail: 512 North Salisbury St.
Raleigh, NC 27606
2

E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.
From: Kiviniemi, John [mailto:[e-mail]]
Sent: Monday, January 31, 2011 11:50 AM
To: Chernikov, Sergei
Subject: Map
Importance: High
We have completed the detailed aerial map showing the MSD facility, hydro flume and all downstream
tributaries. We would propose to sample at various locations as a part of our detailed ammonia nitrogen
study; specifically to insure that any/all potential contributions are accounted for - this would obviously
continue to include our defined downstream monitoring location @ Ledges Park. One of the areas we can
monitor which provides the most immediate assessment of potential impact is where the hydro tailrace comes
into the main body of the French Broad River - or immediately downstream of this location. The area is fairly
accessible in most conditions - but is subject to flooding during high water flows. What I would advocate is
that the special condition simply incorporate the previously discussed ammonia "study" - we can/will insure
NCDENR-DWQ has an opportunity to review our study protocol to insure that we provide the comprehensive
assessment that is desired to address the inquiry about this parameter. We are attempting to scan the noted
map into PDF format, after which I will forward you a copy. A hard copy is being mailed to you today. Can I
assume that a draft issuance of the permit (including the standard conditions) is forthcoming? I will want to
review it in its entirety before final issuance. JK
John Kiviniemi
Director, Water Reclamation
MSD
3

Chernikov, Sergei
From: [e-mail]
Sent: Thursday, August 12, 2010 2:33 PM
To: Chernikov, Sergei
Subject: NC0024911- Buncombe Co. French Broad River WRF
EPA has no comments on this draft permit.

ASHEVH .i F
North Carolina EnvironmentaltntManagement
Commission/NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Notice of Intent to Issue a
NPDES Wastewater Permit
The North Carolina Environmental Management
Commission proposes to Issue a NPDES waste-
water discharge permit to the person(s) listed
below. —
Written comments regarding the proposed per-
mit will be accepted until 30 days after the pub-
lish date of this notice- The Director of the NC
Division of Water Quality (DWQ) may hold a
public hearing should there be a significant de-
gree of public interest. Please mail comments
and/or , information requests to DWQ at the
above address. Interested persons may visit
the DWQ at 512 N. Salisbury Street Raleigh, NC
to review information 9n tile, Additional infor-
mation on NPDES permits and .this notice may
be found on our website: www.ncwaterquali-
ty.org, or by calling [phone].
IMSD of Buncombe County requested renewal of
permit NC0024911 for MSD Buncombe County
WWTP in Buncombe County; this facility dis-
charge is treated municipal wastewater to
French Broad River. French Broad River Basin.
Town of Hot Springs requested renewal of per-
mit NC0049620 for Hot Springs Housing Authori-
ty WWTP In Madison County this permitted
discharge is treated domestic wastewater to
the French Broad River, French Broad River Ba-
sin.
Vista Developers, LLC requested renewal of
NPDES permit NC0088056: Blacksmith Run
WWTP/Henderson County. Facility discharges
treated wastewater to Lewis Creek in the
French Broad River Basin. Fecal coliform, am-
monia nitrogen and total residual chlorine are
water quality limited.
August6,2010 (7572)
CITIZEN TLS
VOICE OF THE MOUNTAINS • CITIZEN-TIMTS.com
AFFIDAVIT OF PUBLICATION
BUNCOMBE COUNTY
SS.
NORTH CAROLINA
Before the undersigned, a Notary Public of said County and
State, duly commissioned, qualified and authorized by law
to administer oaths, personally appeared Elyse Giannetti,
who, being first duly sworn, deposes and says: that she is
the Legal Billing Clerk of The Asheville Citizen -Times,
engaged in publication of a newspaper known as The
Asheville Citizen -Times, published, issued, and entered as
first class mail in the City of Asheville, in said County and
State; that she is authorized to make this affidavit and
sworn statement; that the notice or other legal
advertisement, a true copy of which is attached hereto, was
published in The Asheville Citizen -Times on the
following date: August 6th , 2010. And that the said
newspaper in which said notice, paper, document or legal
advertisement was published was, at the time of each and
every publication, a newspaper meeting all of the
requirements and qualifications of Section 1-597 of the
General Statues of North Carolina and was a qualified
newspaper within the meaning of Section 1-597 of the
General Statues of North Carolina.
Signed this 6th day of August, 2010
(Signature of person making affidavit)
Sworn to and subscribed before me the 6th day of August,
2010
(Notary Publi
My Com
ission expires the 5
[phone] I [phone] FAX
14 O. HENRY AVE. I P.O. BOX 2090 1 ASHEVILLE, NC 28802 I [phone]
GANVEtT
day of October, 2013 "'DY BA
ma NC) r.a. r't v
zb� Pohl it V• 1
,
• EV
1.. 11��1l�"1' Z ♦�
�"

NCDENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
Metropolitan Sewerage District of Buncombe County
NC0024911
Facility Information
(1.) Facility Name: ! French Broad River WRF
(2.) Permitted Flow MGD): ; 40 MGD
_...__._............ .......................... _.........._.........._...__._...__--
j (6.) County: Buncombe
(3.) Facility Class: t IV
(7.) Regional Office:
Asheville
Weaverville
(4.) Pretreatment Program: I Full
(8.) USGS Topo Quad:
(9.) USGS Quad Name:
(5.) Permit Status: Existing/renewal
F
E8NE
Stream Characteristics
(1.) Receiving Stream:
French Broad River
(7.) Drainage Area (mi2):
(8.) Summer 7Q10 (cfs):
966
(2.) Sub -basin:
04-03-02
466
(3.) Stream Index Number:
(9.) Winter 7Q10 (cfs):
595
(4.) Stream Classification:
B
(10.) 30Q2 (cfs):
882
(5.) 303(d) Status:
Not listed
(11.) Average Flow (cfs):
2140
(6.) 305(b) Status:
-
(12.) IWC %:
12
1.0 Proposed Changes Incorporated Into Permit Renewal
➢ A cyanide limit has been removed and monitoring frequency was reduced to
quarterly based on the results of the Reasonable Potential Analysis..
➢ Monitoring frequencies for copper, zinc, and silver were reduced to quarterly
based on the review of the effluent data.
2.0 Summary
The Metropolitan Sewerage District of Buncombe County (MSD) services an area that includes
Asheville, Black Mountain, Montreat, Woodfin, Biltmore forest, and Weaverville. The facility
also processes wastewater from 23 SIUs currently accounting for 2.94 MGD of the wasteflow.
This segment of the French Broad River is not listed on the 303(d) lists. Based on the information
from Dave Goodrich (Aquifer Protection Section), MSD appears to maintain an unpermitted 17-
acre sludge lagoon. At one point this lagoon was used to store ash (from an onsite incinerator),
grit, line cleanouts, grease, and site stormwater. The outfall from the lagoon returns to the head
of the plant. Based on discussions with MSD, the Asheville Regional office, and Shannon
Thornburg in the non -discharge unit, MSD has agreed to several improved waste handling
procedures. A septage receiving station has been built for the vacuum truck debris, site
management procedures were (according to a July 2003 letter) implemented in Fall 2003.
Therefore grease, grit, and line cleanouts are no longer stored in the lagoon. The regional office
indicates that the facility will continue to use the lagoon for ash storage and the treatment unit
should be permitted. Therefore, the permit contains special condition allowing the use of the
lagoon for ash storage.
The permit also includes a special condition restating the facility's existing groundwater
monitoring requirements.

NPDES Permit Fact Sheet — 02/04/ 11 French Broad River WRF
Page 2 NC0024911
3.0 Compliance Summary
DMR Data Review
Since the existing permit was issued (01/15/2008), the facility received no NOVs. The last
compliance evaluation inspection conducted on 01/23/2008 determined that the facility is
compliance.
Instream Data
The facility is required to monitor the following parameters in the receiving stream: DO, fecal
coliforms, and temperature. Instream data was reviewed for 2008 and 2009. Conductivity levels
appear slightly higher downstream, however other parameters do not change significantly
downstream of the discharge.
RPA Analysis
RPAs were performed for cadmium,. cyanide, chromium, copper, zinc, silver, arsenic, beryllium,
lead, mercury, and nickel (please see attached).
WET Test Results
The facility has a 12% chronic WET testing requirement. The facility has been consistently
passing the WET test.
Correspondence File Review/Compliance History
The facility appears to be well operated and maintained. The last Compliance Evaluation
Inspection conducted on 01/23/2008 found the facility to be in compliance.
4.0 Proposed Schedule for Permit Issuance
Draft Permit to Public Notice: August 3, 2010.
Permit Scheduled to Issue: September 27, 2010
5.0 State Contact Information
If you have any questions on any of the above information or on the attached permit, please
contact Sergei Chernikov [phone].
Changes in the Final Permit:
The Special Condition entitled "Ammonia Reduction Evaluation" was added to the permit,
please see Special Condition A. (7.).

Chernikov, Sergei
From: Kiviniemi, John [[e-mail]]
Sent: Friday, February 18, 2011 1:24 PM
To: Chernikov, Sergei
Subject: RE: Draft NPDES Permit - MSD
Yes — we approve as corrected - JK
From: Chernikov, Sergei [mailto:[e-mail]]
Sent: Friday, February 18, 2011 8:17 AM
To: Kiviniemi, John
Subject: RE: Draft NPDES Permit - MSD
John,
Based on your e-mail, I have removed the paragraph 1 (c). Please review the language below and let
me know if this condition is formulated in accordance with your understanding.
Thank you!
Sergei
A. (4.) GROUNDWATER REQUIREMENTS
1. Sampling Requirements:
a. Existing groundwater monitoring wells MW-1, MW-2, MW-3, and MW-4 shall be sampled every
January, June, and October. For each sampling event, samples from each well shall be
analyzed for the parameters listed below:
Arsenic
Lead
Silver
Barium
Mercury
Total Dissolved Solids
Chloride
Total Ammonia
Nitrogen
Total Organic Carbon
Chromium
Nitrate -Nitrogen
Water Level
Fecal Coliform
pH
Volatile Organic
Compounds
(in October only)
Water levels in the groundwater monitoring wells shall be measured prior to sampling the
groundwater for the remaining parameters. The depth to water in each well shall be measured
from the surveyed point on the top of the casing, which shall be surveyed relative to a common
datum.
b. Volatile organic compounds (VOCs) shall be analyzed using one of the following methods:
1

i
i. Standard Method 6200C (PQL at 0.5 µg/ L or less),
ii. Standard Method 6200B (PQL at 0.5 µg/L or less),
iii. EPA Method 8021 (Low Concentration, PQL at 0.5 pg/L or less),
iv. EPA Method 8260 (Low Concentration, PQL at 0.5 µg/L or less), or
v. Another method with prior approval by the Aquifer Protection Section Chief.
Any of the referenced methods used for VOCs shall, at a minimum, include all of the
constituents listed in Table 6200:I of Standard Method 6200. Any method used shall provide a
PQL at 0.5 µg/L or less, which shall be supported by laboratory proficiency studies required by
the Division's Laboratory Certification Unit. Any constituents detected above the MDL, but
below the PQL at 0.5 µg/L, shall be qualified (i.e., estimated) and reported.
c. Any laboratory selected to analyze parameters shall be Division -certified for those parameters
required.
2. Reporting/Documentation Requirements:
a. The results of the sampling and analysis shall be received on the most -recent version of
"Groundwater Quality Monitoring: Compliance Report Form" (i.e., GW-59 Form) with copies of
the laboratory analyses by the Division on or before the last working day of the month following
the sampling month.
b. All reports, maps, and other documents required in the "Groundwater Requirements" section of
this permit shall be mailed to the following address:
NCDENR-DWQ
Information Processing Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Updated blank forms may be downloaded from the web site
http: / /portal.ncdenr.org/web/wa/aps or requested from the address listed above.
3. Applicable Boundary Requirements:
a. The Compliance Boundary is specified by regulations in 15A NCAC 2L (i.e., "Groundwater
Classifications and Standards"). The Compliance Boundary for the disposal system
individually permitted prior to December 30, 1983 is established at either 500 feet from the
waste disposal area, or at the property boundary, whichever is closest to the waste disposal
area. An exceedance of Groundwater Quality Standards at or beyond the Compliance
Boundary is subject to remediation action according to 15A NCAC 2L .0106 (c).
4. Additional Requirements:
a. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall be
provided.
Sergei Chernikov, Ph.D.
Environmental Engineer Il
Complex Permitting Unit
Phone: [phone], fax [phone]
1617 Mail Service Center
Raleigh, NC 27699-1617
Express mail: 512 North Salisbury St.
Raleigh, NC 27606
2

REASONABLE POTENTIAL ANALYSIS
French Broad River WRF
NC0024911
Time Period 2006-2010
Ow (MGD) 40
7Q10S (cfs) 466
7Q10W (cfs) 595
30Q2 (cfs) 882
Avg. Stream Flow, QA (cfs) 2140
Reeving Stream French Broad River
WWTP Class IV
IWC (%) Qa 7Q10S 11.742
© 7Q10W 9.4368
Q 30Q2 6.5678
C«3 QA 2.8156
Stream Class B
Outfall 001
Qw = 40 MGD
PARAMETER
TYPE
(1)
STANDARDS &
CRITERIA (2)
PQL
Units
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC WQSI %FAt//
Chronic Acute
n # Det. Max Prod Cw Allowable Cw
Arsenic
NC
50
ug/L
11 11
Note: n<12
Limited data
2.5
set
Acute: NIA
_ _ _ _ _ _
-Chronic 426 ----------
no limit
--- ----- --------------
Beryllium
NC
6.5
ug/L
11 11
Note: n<12
Limited data
0.5
set
Acute: NIA
__ ------
-Chronic-55
no limit
----------------•-----------
Cadmium
NC
2 15
ug/L
11 11
Note: n<12
Limited data
0.5
set
Acute: 15
-_ _ -----------------------------------
Chronic:17
no Limit
Chromium
NC
50 1,022
ug/L
11 11
Note: n<12
Limited data
8.5
set
Acute: 1,022
_ _ _ _ _ _----------
Chronic:426
no limit
----------------------
Copper
NC
7 AL 7.3
ug/L
57 57
25.8
Acute: 7
Chronic: 60
no limit
action level standard
Cyanide
NC
5 N 22
10
ug/L
108 13
20.4
Acute: 22
_ _ _ -- --------------------------------
Chronic:43
remove the limit
Lead
NC
25 N 33.8
ug/L
11 11
Note: n<12
Limited data
2.5
set
Acute: 34
•_ _ _ _ _ _
Chronic 213 -----------------------------
no limit
•--
,
Mercury
NC
12
2.0000
ng/L
29 29
90.0900
Acute: N/A
_ _ _ _ _ _
-Chronic 102-—
no limit
-- ---- ----------------- -- ---
Nickel
NC
88 261
ug/L
31 16
248.2
Acute: 261
Chronic: 749
no limit
------------------------------
Silver
NC
0.06 AL 1.23
ug/L
57 57
2.5
Acute: 1
_ _ --- �---------------------------------
Chronic:action
no limit
level standard
Zinc
NC
50 AL 67
ug/L
57 57
110.7
Acute: 67
_ _ _ _ _ --•
Chronic:426
no limit
-----------------------------
action level standard
* Legend:
C = Carcinogenic
NC = Non -carcinogenic
A = Aesthetic
" Freshwater Discharge
24911-rpa-2010.xls, rpa
11/3/2010

REASONABLE POTENTIAL ANALYSIS
Arsenic
Beryllium
Date
Data
1
::
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
BDL=1/2DL Results
2.5 Std Dev.
2.5 Mean
2.5 C.V.
2.5 n
2.5
2.5 Mult Factor =
2.5 Max. Value
2.5 Max. Pred Cw
2.5
2.5
2.5
0.0000 1
2.5000 2
0.0000 3
11 4
5
1.0000 6
2.5 ug/L 7
2.5 ug/L 8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
Date Data BDL=1/2DL Results
0.5 Std Dev.
0.5 Mean
0.5 C.V.
.0.5 n
0.5
0.5 Mult Factor =
0.5 Max. Value
0.5 Max. Pred Cw
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.0000
0.5000
0.0000
11
1.0000
0.5 ug/L
0.5 ug/L
-1-
24911-rpa-2010.xls, data
7/22/2010

REASONABLE POTENTIAL ANALYSIS
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
-2-
24911-rpa-2010.xls, data
7/22/2010

REASONABLE POTENTIAL ANALYSIS
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
-3-
24911-rpa-2010.xls, data
7/22/2010

REASONABLE POTENTIAL ANALYSIS
Cadmium
Chromium
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
Date Data BDL=112DL Results
0.5 0.5 Std Dev.
0.5 0.5 Mean
0.5 0.5 C.V.
0.5 0.5 n
0.5 0.5
0.5 0.5 Mult Factor =
0.5 0.5 Max. Value
0.5 0.5 Max. Pred Cw
0.5 0.50
0.5 0.50
0.5 . 0.50
0.0000
0.5000
0.0000
11
1.0000
0.5 ug/L
0.5 ug/L
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
Date Data BDL=112DL Results
2.5 2.5 Std Dev.
2.5 2.5 Mean
2.5 2.5 C.V.
2.5 2.5 n
2.5 2.5
2.5 2.5 Mult Factor =
2.5 2.5 Max. Value
2.5 2.5 Max. Pred Cw
2.5 2.5
5.0 5.0
2.5 2.5
0.7538
2.7273
0.2764
11
1.6900
5.0 ug/L
8.5 ug/L
-4-
24911-rpa-2010.xls, data
7/22/2010

REASONABLE POTENTIAL ANALYSIS
I
24911-rpa-2010.xls, data
- 5 - 7/22/2010

REASONABLE POTENTIAL ANALYSIS
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
-6-
24911-rpa-2010.xls, data
7/22/2010

REASONABLE POTENTIAL ANALYSIS
Copper
Cyanide
Date
Data
it
,I
BDL=112DL Results
13 13.0 Std Dev. 3.1097
11 11.0 Mean 13.3965
12 12.0 C.V. 0.2321
15 15.0 n 57
13 13.0
13 13.0 Mult Factor = 1.2300
15 15.0 Max. Value 21.0 ug/L
14 14.0 Max. Pred Cw 25.8 ug/L
20 20.0
14 14.0
16 16.0
15 15.0
19 19.0
12 12.0
14 14.0
13 13.0
14 14.0
15 15.0
14 14.0
11 11.0
12 12.0
20 20.0
12 12.0
14 14.0
13 13.0
12 12.0
21 21.0
16 16.0
14 14.0
15 15.0
11 11.0
9 9.3
9 9.4
18 18.0
19 19.0
14 14.0
14 14.0
16 16.0
19 19.0
12 12.0
13 13.0
13 13.0
10 9.9
9 8.9
9 9.2
10 10.0
8 8.4
10 10.0
8 7.8
12 12.0
9 9.1
10 9.6
12 12.0
16 16.0
12 12.0
13 13.0
16 16.0
Date
Data BDL=112DL Results
c 5 5.0 Std Dev, 1.6385
5 5.0 Mean 5.2546
i < 5 5.0 C.V. 0.3118
<' 5 5.0 n 108
• < 5 5.0
< 5 5.0 Mult Factor = 1.2000
< 5 5.0 Max. Value 17.0 ug/L
6 5.0 Max. Pred Cw 20.4 ug/L
<
• <
5 5.000
5 5.000
5 5.000
5 5.000
5 5.000
5 5.0
<1 5 5.0
5 5.0
5 5.0
5 5.0
5 5.0
5 5.0
5 5.0
5 5.0
5 5.0
5 5.0
5 5.0
5 5.0
5 5.0
5 5.0
5 5.0
< ' 5 5.0
< 5 5.0
< 5 5.0
5 5.0
5 5.0
5 5.0
17 17.0
5 5.0
5 5.0
5 5.0
5 5.0
6 5.0
6 5.0
5 5.0
6 5.0
6 5.0
5 5.0
5 5.0
5 5.0
5 5.0
5 5.0
5 5.0
5 5.0
7 5.0
17 17.0
5 5.0
5 5.0
5 5.0
5 5.0
5 5.0
<: 5 5.0
<. 5 5.0
7 5.0
<. 14 7.0
<: 5 5.0
< 5 5.0
< 5 5.0
< 5 5.0
< 5 5.0
< 5 5.0
< 5 5.0
-7-
24911-rpa-2010.xls, data
7/22/2010

REASONABLE POTENTIAL ANALYSIS
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
< 5 5.0
< 5 5.0
< 5 5.0
< 5 5.0
< 5 5.0
< 5 5.0
< 5 5.0
< 5 5.0
< 13 6.5
< 5 5.0
< 5 5.0
< 5 5.0
< 5 5.0
5 5.0
< 5 5.0
< 5 5.0
< 5 5.0
< 5 5.0
' < 5 5.0
< 5 5.0
< 5 5.0
< 5 5.0
< 5 5.0
< 5 5.0
; < 5 5.0
< 5 5.0
< 5 5.0
< 5 5.0
< 5 5.0
< 5 5.0
8 5.0
< 5 5.0
< 5 5.0
< 5 '5.0
< 5 5.0
< 5 5.0
< 5 5.0
< 5 5.0
-8-
24911-rpa-2010.xls, data
7/22/2010

REASONABLE POTENTIAL ANALYSIS
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
-9-
24911-rpa-2010.xls. data
7/22/2010

REASONABLE POTENTIAL ANALYSIS
Lead
Mercury
Date Data BDL=1/2DL Results
2.5 2.5 Std Dev.
2.5 2.5 Mean
2.5 2.5 C.V.
2.5 2.5 n
2.5 2.5
2.5 2.5 Mult Factor =
2.5 2.5 Max. Value
2.5 2.5 Max. Pred Cw
2.5 2.5
2.5 2.5
2.5 2.5
0.0000
2.5000
0.0000
11
1.0000
2.5 ug/L
2.5 ug/L
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
Date Data BDL=1/2DL Results
58.5 58.5 Std Dev. 9.7485
24.3 24.3 Mean 28.1897
34.9 34.9 C.V. 0.3458
25.1 25.1 n 29
25.1 25.1
25.9 25.9 Mult Factor = 1.54
23.2 23.2 Max. Value 58.5 ng/L
26.6 26.6 Max. Pred Cw 90.1 ng/L
37.0 37.0
12.2 12.2
18.8 18.8
31.9 31.9
22.0 22.0
25.2 25.2
28.3 28.3
23.8 23.8
21.9 21.9
24.0 24.0
32.1 32.1
31.7 31.7
29.2 29.2
24.7 24.7
56.8 56.8
24.3 24.3
19.2 19.2
36.2 36.2
24.5 24.5
28.1 28.1
22.0 22.0
- 10 -
24911-rpa-2010.xls, data
7/22/2010

REASONABLE POTENTIAL ANALYSIS
Nickel
Silver
Date Data BDL=1/2DL Results
5.60 5.6 Std Dev.
58.00 58.0 Mean
2.50 2.5 C.V.
8.70 8.7 n
6.00 6.0
2.50 2.5 MuIt Factor =
2.50 2.5 Max. Value
9.90 9.9 Max. Pred Cw
7.00 7.0
5.20 5.2
2.50 2.5
<: 5.00 2.5
< 5.00 2.5
< 5.00 2.5
<'; 5.00 2.5
<' 5.00 2.5
<? 5.00 2.5
<• 5.00 2.5
5.00 5.0
6.60 6.6
5.60 5.6
7.10 7.1
< 5.00 2.5
6.00 6.0
< 5.00 2.5
< 5.00 2.5
< 5.00 2.5
< 5.00 2.5
< 5.00 2.5
< 5.00 2.5
< 5.00 2.5
9.9362
5.7484
1.7285
31
4.2800
58.0 ug/L
248.2 ug/L
Date Data BDL=1/2DL Results
2.5 2.5 Std Dev. 0.0000
2.5 2.5 Mean 2.5000
2.5 2.5 C.V. 0.0000
2.5 2.5 n 57
2.5 2.5
2.5 2.5 Mult Factor 1.0000
2.5 2.5 Max. Value 2.5 ug/L
2.5 2.5 Max. Pred Cw 2.5 ug/L,
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
- 13 -
24911-rpa-2010.xls, data
7/22/2010

REASONABLE POTENTIAL ANALYSIS
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
- 14 -
24911-rpa-2010.xls, data
7/22/2010

REASONABLE POTENTIAL ANALYSIS
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
tql
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
24911-rpa-2010.xls, data
- 15 - 7/22/2010

REASONABLE POTENTIAL ANALYSIS
Zinc
Date Data BDL=112DL Results
69 69.0 Std Dev. 12.5713
76 76.0 Mean 64.3000
66 66.0 C.V. 0.1955
78 78.0 n 57
71 71.0
72 72.0 Mult Factor = 1.1900
85.1 85.1 Max. Value 93.0 ug/L
59 59.0 Max. Pred Cw 110.7 ug/L
79 79.0
67 67.0
62 62.0
55 55.0
93 93.0
53 53.0
62 62.0
54 54.0
58 58.0
71 71.0
66 66.0
64 64.0
58 58.0
92 92.0
61 61.0
69 69.0
62 62.0
70 70.0
83 83.0
66 66.0
63 63.0
69 69.0
46 46.0
36 36.0
50 50.0
62 62.0
85 85.0
66 66.0
56 56.0
59 59.0
80 80.0
66 66.0
66 66.0
75 75.0
47 47.0
43 43.0
48 48.0
45 45.0
43 43.0
65 65.0
39 39.0
66 66.0
62 62.0
58 58.0
69 69.0
73 73.0
66 66.0
59 59.0
82 82.0
- 16 -
24911-rpa-2010.xls, data
7/22/2010

Facility:
NC00xxxxx
Prepared By:
Enter Design FIowMGD):
Enter s7Q10 (cfs):er
Enter w7Q10 (cfs):
IWC Calculations
595
Total Residual Chlorine (TRC)
Daily Maximum Limit (ug/I)
s7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
Upstream Bkgd (ug/l)
IWC (%)
Allowable Conc. (ug/l)
Fecal Coliform
Monthly Average Limit:
(If DF >331; Monitor)
(If DF<331; Limit)
Dilution Factor (DF)
466
40
•62
17.0
0
11.74
145
Ammonia (Summer)
Monthly Average Limit (mg NH3-N/I)
s7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
Upstream Bkgd (mg/I)
IWC (%)
Allowable Conc. (mgll)
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/I)
w7Q10 (CFS)
2001100m1 DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
8.52 Upstream Bkgd (mg/I)
IWC (%)
Allowable Conc. (mg/l)
Total Residual Chlorine
1. Cap Daily Max limit at 28 ug/I to protect for acute toxicity
Ammonia (as NH3-N)
1. If Allowable Conc > 35 mg/I, Monitor Only
2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals); capped at 35 mg/I
3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis); capped at 35 mg/I
4. Lower treatment cap for Minor Domestics: 2 mg/I (summer) and 4 mg/I (winter)
5. Lower treatment cap for Major Municipals: 1 mg/I (year-round)
466
40
62
1.0
0.22
595
40
62
1.8
0.22
Fecal Coliform
1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni)
NPDES Server/Current Versions/WLA; TB 1/16/2009

NPDES/Aquifer Protection Permitting Unit Pretreatment Information Request Form
PERMIT WRITER COMPLETES THIS PART:.
PERMIT WRITERS - AFTER you get this form
back from PERCS:
Check all that apply
- Notify PERCS if LTMP/STMP data we said should
Date of Request
2/23/2010
municipal renewal
x
be on DMRs is not really there, so we can get it for
Requestor
Bob Guerra
new industries
you (or NOV POTW).
Facility Name
Buncombe MSD
WWTP expansion
- Notify PERCS if you want us to keep a specific
Permit Number
NC0024911
Speculative limits
POC in LTMP/STMP so you will have data for next
renewal.
Region
Asheville
stream reclass.
permit
- Email PERCS draft permit, fact sheet, RPA.
Basin
French Broad
stream relocation
- Send PERCS paper copy of permit (w/o NPDES
7Q10 change
boilerplate), cover letter, final fact sheet. Email RPA
other
if changes.
other
check a
plicable PERCS
staff:
Other Comments to
PERCS:
CTB, CHO, LUM, NEW,
ROA - Dana Folley (523)
HIW, LTN, NEU, YAD
- Monti Hassan (371)
X
BRD, CPF, FRB, TAR
- Sarah Morrison (208)
PERCS
Status of
PRETREATMENT
Pretreatment Program
STAFF COMPLETES
(check all that apply)
THIS PART:
1) facility has no SIU's,
does have Division
approved
Pretreatment Program
that is INACTIVE
2) facility has no SIU's,
does not have Division
approved
Pretreatment
Program
X
3) facility has SIUs
and DWQ approved Pretreatment
Program (list "DEV"
if program still under development)
. X
3a) Full Program
with LTMP
3b) Modified Program
with STMP
4) additional conditions
regarding Pretreatment
attached
or listed below
STMP time frame:
Most recent:
Flow, MGD
Permitted
Actual
Time period
for Actual
Next Cycle:
Industrial
0.888
0.59
Oct 2004-
Dec 2008
Uncontrollable
n/a
15.22
Oct 2004-
Dec 2008
e.
POC in
LTMP/
STMP
Parameter of
Concern (POC)
Check List
POC due to
NPDES/ Non-
Disch Permit
Limit
Required
by EPA*
Required
by 503
Sludge**
POC due
to SIUm
POTW POC
(Explain
below)****
STMP
Effluent
Freq
LTMP
Effluent
Freq
. X
BOD
L
X
4
,
Q M
X
TSS
L
X
4
Q M
Q = Quarterly
X
NH3
M
•
4
Q M
M = Monthly
X
Arsenic
X
4
Q M
,%
Cadmium:::
,f
X
X
4
Q M
,f
Chromium -.
,%
X
4
Q M
,f
Copper. _
M
,1
X
X
4
Q M
X
Cyanide
L
X
4
Q M
all data on DMRs?
,i
Lead
,%
X
X
4
Q M
YES
X
X
Mercury
X
4
Q M
NO (attach data)
Molybdenum
4
Q M
,%
Nickel
,�
X
X
4
Q M
X
Silver
M
X
4
Q M
Selenium
4
Q M
Ni
Zinc
M
,/
X
X
4
Q M
data in spreadsheet?
X
Beryllium
X
4
Q M
YES (email to writer)
X
Oil & Grease
X
4
Q M
NO
*Always in the LTMP/STMP ** Only in LTMP/STMP if sludge land app or composte (dif POCs for incinerators)
*** Only in LTMP/STMP while SIU still discharges to POTW **** Only in LTMP/STMP when pollutant is still of concem to POTW
Comments to Permit Writer (ex.. explanation of any POCs: Info you have on IU related investigations into NPDES problems):
POTW Incinerates their sludge.
MSD Buncombe PIRF Mar 2010.xls
Revised: July 24, 2007

MSD Plant Effluent Metals
44dEttiti3
LLA- rsihr,c':j
atiftlifirt
MOW]
1.7:714:77
CiNi0.1017:1
faLet,-J
1/2/08
1/24/08
2/4/08
2/29/08
3/3/08
3/24/08
4/2/08
4/17/08
5/5/08
5/19/08
6/2/08
6/16/08
7/17/08
8/18/08
9/2/08
10/6/08
10/23/08
11/3/08
11/17/08
12/1/08
12/15/08
1/5/09
1/21/09
2/2/09
2/25109
3/5/09
3/16/09
4/6/09
4/23/09
5/4/09
5/18/09
6/1/09
6/15/09
7/6/09
7/23/09
8/3/09
8/17/09
9/8/09
9/21/09
10/5/09
10/19109
10/22/09
11/2/09
11/16/09
12/7109
12/21/09
1/4/10
1/28/10
2/1/10
2/15/10
3/1/10
3/15/10
4/5/10
4/19/10
4/29/10
5/3/10
5/17/10
0.0130
0.0025 0.0005 0.0005 0.0025 0.0110
0.0120
0.0150
0.0130
0.0130
0.0025 0.0005 0.0005 0.0025 0.0150
0.0025 0.0005 0.0005 0.0025 0.0140
0.0200
0.0140
0.0160
0.0150
0.0025 0.0005 0.0005 0.0025 0.0190
0.0120
0.0140
0.0130
0.0025 0.0005 0.0005 0.0025 0.0140
0.0150
0.0140
0.0110
0.0120
0.0200
0.0120
0.0140
0.0130
0.0025 0.0005 0.0005 0.0025 0.0120
0.0210
0.0160
0.0025 0.0005 0.0005 0.0025 0.0140
0.0150
0.0110
0.0093
0.0094
0.0180
0.0025 0.0005 0.0005 0.0025 0.0190
0.0140
0.0140
0.0160
0.0190
0.0120
0.0130
0.0025 0.0005 0.0005 0.0025 0.0130
0.0099
0.0089
0.0092
0.0100
0.0084
0.0025 0.0005 0.0005 0.0050 0.0100
0.0078
0.0120
0.0091
0.0096
0.0120
0.0160
0.0025 0.0005 0.0005 0.0025 0.0120
0.0130
0.0160
0.0025
0.0025 0.000p585 0.0056 0.0025
0.0025
0.0025
0.0025
0.0025
0.0025 0.000p243 0.0580 0.0025
0.0025 0.00q0349 0.0025 0.0025
0.0025
0.0025
0.0025
0.0025
0.0025 0.090251 0.0087 0.0025
0.0025
0.0025
0.0025
0.0025 0.000p251 0.0060 0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025 0.0000259 0.0025 0.0025
0.0025
0.0025
0.000p232 0.0025 0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025 0.00010266 0.0099 0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025 0.000p370 0.0070 0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025 0.000p122 0.0052 0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025 0.000p188 0.0025 0.0025
0.0025
0.0025
0.0690
0.0760
0.0660
0.0780
0.0710
0.0720
0.0851
0.0590
0.0790
0.0670
0.0620
0.0550
0.0930
0.0530
0.0620
0.0540
0.0580
0.0710
0.0660
0.0640
0.0580
0.0920
0.0610
0.0690
0.0620
0.0700
0.0830
0.0660
0.0630
0.0690
0.0460
0.0360
0.0500
0.0620
0.0850
0.0660
0.0560
0.0590
0.0800
0.0660
0.0660
0.0750
0.0470
0.0430
0.0480
0.0450
0.0430
0.0650
0.0390
0.0660
0.0620
0.0580
0.0690
0.0730
0.0660
0.0590
0.0820

MSD Plant Effluent Metals
Arsenic Beryllium Cadmium Chromium Copper Lead Mercury Nickel Silver Zinc
aver 0.0025 0.0005 0.0005 0.0027 0.0134 0.0025 0.0000283 0.0100 0.0025 0.0643
max 0.0025 0.0005 0.0005 0.0050 0.0210 0.0025 0.0000585 0.0580 0.0025 0.0930
Detection
Limit
0.005 0.001 0.001 0.002 0.002 0.005 0.0000005 0.005 0.005 0.01
if sample results reported below detection limit, used 1/2 detection limit in calculations

NPDES RENEWAL
2010
Facility Description:
The present reclamation facility is a 40MGD secondary plant serving Buncombe County
(specifically — Asheville, Biltmore Forest, Black Mountain, Montreat, Weaverville, Woodfin
and Buncombe County at large). The facility treats a current average daily flow of 21MGD.
The reclamation facility is an attached growth design, comprised of 152xatating biological
contactors (RBC's). These RBC's provide 450-500 acres (3+ acres each unit) of surface
ryes or jo ica owth. It has been said that MSD's facility is the largest RBC plant in
the world. The plant consists of:
Preliminary Treatment Components
IDI Barscreens (2 units) w/screenings compactor and shaftless screw conveyer
Influent Pumps (3 units) — 35 MGD rated capacity each
Aerated Grit Chambers (3 units) w/associated grease removal
Primary Treatment Components
Primary Micro -Screens (7 units) — 250 micron screens — (mothballed — no longer in service)
Secondary Treatment Components
1" Stage RBC's (44 units)
2nd Stage RBC's (72 units)
3"1 Stage RBC's (36 units)
Intermediate Pumps (3 units) — pump water to clarifier from 3'd RBC stage
Intermediate Clarifier (4 cells — total volume 2 MG)
Final Micro -Screens (18 units) — 27 micron screens — (mothballed — no longer in service)
Disinfection & De -Chlorination Components
Liquid Chlorine (Sodium Hypochlorite)
Liquid De -Chlorination (Sodium Bi-Sulfite)
Residuals Handling Components
Gravity Thickeners (2 units) —100 foot diameter each
Gravity Belt Thickeners (4 units) — (mothballed - no longer in service)
2.5 Meter Belt Filter Presses (2 units)
Anaerobic Digesters (2 units) —100 foot diameter each — (mothballed — no longer in service)
Fluidized Bed Incinerator (40DT/day rated)
Alkaline Stabilization Facility (40DT/day rated)
Energy Management Components
2 Megawatt Diesel Generator (full back-up/emergency power for WRF)
450 Kilowatt Gas Generators (2 units) — operate on natural, digester or landfill gas
850 Kilowatt Hydro Turbines (3 units) — induction units (French Broad River source)
Automation Components
SCADA — PC/PLC Control System — full automated control of WRF

The reclamation facility is permitted for up to 40 MGD, with discharge limits of 25mg/1
CBOD (monthly average) and 30mg/1 TSS (monthly average). The current average removal
efficiency for these two parameters is approx. 90-91% respectively, compliance has been
consistent. Since the last permit renewal, the plant has undergone various improvements.
WWTP Improvements
Fluidized Bed Incinerator — new venturi scrubber system
Installation of Liquid De -Chlorination System (Sodium Bi-Sulfite)
Gravity Thickeners — new drive assemblies & sludge collector mechanism (2 units)
Intermediate Clarifier — completed replacement of all sludge pumps (6 units)
Initiated Construction - CIP Replacement Project — Intermediate Pumps (3 units)
Completed Design — CIP Replacement Project — Final Micro -Screen Process
In addition to the items listed above, numerous operational modifications have been made
to improve the overall efficiency of the treatment operation. All of which have significantly
improved the quality of the plant effluent.
It should also be noted that MSD maintains ISO-14001 certification and continues to be one
of the largest utility organizations in NC to achieve certification for the entire utility.
MSD also maintains an excellent web site, which includes a tour of the treatment facility —
access the site via www.msdbc.org

Sludge Management Plan
MSD utilizes its fluidized bed incinerator as its primary residuals management option, with
alkaline stabilization as a secondary management option — as well as maintains an
arrangement with the Buncombe County landfill (lined) for emergencies. Presently the
facility is managing approx. 14 DT's per day of residuals. The facilities are designed for
40DT's per day. Due to the lack of true primary clarifiers, most of the sludge generated at
the facility is secondary in nature (i.e. sloughings from the RBC's). Sludge is thickened in
on -site gravity thickeners to a consistency of 2-5% solids at which time it is then pumped to
the 2.5-meter belt presses. These units dewater the sludge to 24+% solids and then it is
pumped to the incinerator. The facility maintains gravity belt thickeners and anaerobic
digesters, however these units are presently not being utilized. Air emissions from the
incinerator are of excellent quality. Recent air emissions testing place removal efficiency of
the air scrubbers at 99+% for regulated parameters. Incinerator ash is thickened on -site
via a gravity ash thickener and then pumped to an on -site lagoon. Groundwater is
monitored in accordance with NCDENR requirements (up & down gradient). When
alkaline stabilization operations are activated, a class A product is produced and
distributed to the public. The alkaline add -mixtures utilized in the process are cement kiln
dust (CKD) and lime kiln dust (LKD). The process incorporates the use of the "N-Viro"
process when these alkaline products are utilized in accordance with the patented mix
recipe. Due to the fact that the incinerator operations provide much more cost effective
management, it is utilized as the primary option. Supplementary fuel is still necessary in
most cases, both natural gas & landfill gas, as well as #2 fuel oil, are available for use in this
regard.

INCINERATOR
BELT FILTER
PRESSES
GRAInT1' BELT
THICKENER
4.Cl, CONTACT
DIGESTED B70 SOLIDS
GRAWTy BELT THICKE ED 5/0 SOLIDS
B10 SOLIDS
OLIDS TRUCKED -to ALKALINE
g10 5 ,T10' 7
CNEMICAL SjAe" —
THICKENER
TREArm NT PLANT ADMIN.
THICKENER
THICK NER OVERFLOW
TP.IC
DIGESTERS OPERATE
IN PARALLEL
OR /N SER/ES
GRIT &
GREASE
BASIN
FLUENT P1PF
SCHEMATIC OF TREATMENT PLANT WASTEWATER FLOW

.see To 6
•
Metropolitan Sewerage District
OF BUNCOMBE COUNTY, NORTH CAROLINA
13-January-2010
NC-DENR
Division of Water Quality
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Attention: Tom Beenick — Supervisor, Western NPDES Program
Mr. Belnick:
Pursuant to the NPDES permit (#NC0024911) issued to the Metropolitan Sewerage District of Buncombe
County, NC — French Broad River Water Reclamation Facility on January 15, 2008 which incorporated a
settlement agreement with respect to a daily maximum cyanide limit — specifically the District was given a
2 year compliance schedule, during which a comprehensive cyanide study was to be completed. At the
conclusion, the cyanide limit would be removed from the NPDES permit based upon review of 24 months
of data demonstrating no reasonable potential for the discharge to cause exceedances of the cyanide water
quality standards. The study results are submitted herewith — which MSD feels supports the removal of the
cyanide limit from the subject NPDES permit.
The cyanide study incorporated monitoring of the collection system, select industrial dischargers with CN
processes, unit processes throughout the treatment plant as well as a thorough review of sample collection,
preservation, handling and analysis protocol. Summary comments are noted below and monitoring data is
attached for your review.
strategic sampling of the collection system identified no applicable sources of cyanide
review of select industrial dischargers yielded no concerns that non compliance (real or potential)
could have been the causative agent of the past episodic elevated CN levels
no detectable levels of CN were identified at the treatment plant influent
some detectable levels of CN were identified in the fluidized incinerator air scrubber water but not
sufficient loadings to result in elevated effluent values previously detected
chlorination of noted air scrubber water can destroy any detectable CN
no treatment plant interference were noted with respect to past elevated CN levels
no whole effluent toxicity issues
review of sample collection, preservation, handling & analysis protocol identified concerns related
to changes made by contract lab with respect to sam le reservation — specifically a change was
made from using dry ascorbic acid preservative to using liquid asco ic act
engaging a secondary contract laboratory for comparative CN analysis identified erratic results
from the primary on -site lab — transitioning to secondary lab for all compliance and study analysis
resulted in consistent/reliable data in this regard
use of on -site lab was continued for comparative reference testing throughout the study
transition back to utilizing dry ascorbic acid resulted in virtually all CN data to be non -detect;
MSD feels the past issues related to erratic/elevated CN data was a sample preservation issue
24 months of CN data is attached; which support that the past CN issues were not "real" but
analytical anomalies related to the noted sample preservation issue
PQL levels for CN have been established at 20ppb for various other NC utilities (specifically the
City of Winston-Salem & City of Greensboro) that have experienced CN issues and conducted
similar studies — acknowledging that low level CN detection (below 20ppb) accompanies relative
issues of inaccuracy/reliability is pertinent with respect to MSD's study - NCDENR should set
PQL Ievel at 20 ppb in all NPDES permits: specifically NC0024911.
•
Protecting Our Natural Resources-
2028 RIVERSIDE DRIVE, ASHEVILLE, NORTH CAROLINA 28804 TELEPHONE: [phone] FAX: [phone] WEBSITE: www.msdbc.org

Page -2-
In summary - MSD requests that NCDENR, in accordance with the stipulations associated with the
compliance schedule for CN, remove the daily maximum CN discharge limit from its NPDES permit. The
study concluded that no viable source of CN could be identified that would result in elevated effluent CN
levels. MSD's industrial pretreatment program is adequately controlling any/all potential CN contributions
and no appreciable levels of CN can be identified in the collection system and/or plant influent. The only
substantive finding of the study was the sample preservation issue previously noted — to which remedies
have yielded effluent CN levels returning to non detectable levels.
If there are any questions regarding this correspondence and accompanying data, please feel free to contact
me at my office number (828-225-8223) or mobile number (828-768-0216).
Sincerely,
I ` �
V -
John Kiviniemi
Director — Water Reclamation
Metropolitan Sewerage District — Buncombe County, NC
Cc: file

Meritech Meritech Meritech
PE(Grab) PE(Grab) PE(Grab)
10/1/07 <0.005 8/4/08 <0.005 6/29/09 <0.005
10/8/07 0.005 8/11 /08 <0.005 7/6/09 <0.005
10/15/07 <0.005 8/18/08 <0.005 7/13/09 <0.005
10/18/07 <0.005 8/25/08 0.005 7/20/09 <0.005
10/22/07 <0.005 9/2/08 <0.005 7/23/09 0.008
10/29/07 <0.005 9/8/08 0.007 7/27/09 <0.005
11/5/07 <0.005 9/15/08 0.017 8/3/09 <0.005
11/12/07 <0.005 9/22/08 <0.005 8/10/09 <0.005
11/19/07 0.006 9/29/08 <0.005 8/17/09 <0.005
11/26/07 <0.005 10/6/08 <0.005 8/24/09 <0.005
12/3/07 <0.005 10/13/08 <0.005 8/31/09 <0.005
12/10/07 <0.005 10/20/08 <0.005 9/8/09 <0.005
12/17/07 <0.005 10/23/08 <0.005
12/26/07 <0.005 10/27/08 <0.005
1/2/08 <0.005 11/3/08 0.007
1R/08 <0.005 11/10/08 0.014
1/14/08 <0.005 11/17/08 <0.005
1/22/08 <0.005 11/24/08 <0.005
1/24/08 <0.005 12/1 /08 <0.005
1/28/08 <0.005 12/8/08 <0.005
2/5/08 <0.005 12/15/08 <0.005
2/11/08 <0.005 12/22/08 <0.005
2/18/08 <0.005 12/29/08 <0.005
2/25/08 <0.005 1/5/09 <0.005
3/3/08 <0.005 1/12/09 <0.005
3/10/08 <0.005 1/20/09 <0.005
3/17/08 <0.005 1/26/09 <0.005
3/24/08 <0.005 2/2/09 <0.005
3/31/08 <0.005 2/9/09 <0.005
4/2/08 <0.005 2/16/09 <0.005
4R/08 <0.005 2/23/09 <0.005
4/14/08 <0.005 3/5/09 0.013
4/17/08 <0.005 3/9/09 <0.005
4/22/08 <0.005 3/16/09 <0.005
4/28/08 <0.005 3/23/09 <0.005
5/5/08 <0.005 3/30/09 <0.005
5/12/08 0.017 4/6/09 0.005
5/19/08 <0.005 4/13/09 <0.005
5/27/08 <0.005 4/20/09 <0.005
6/2/08 <0.005 4/23/09 <0.005
6/9/08 <0.005 4/27/09 <0.005
6/16/08 <0.005 5/4/09 <0.005
6/23/08 0.006 5/11/09 <0.005
6/30/08 0.006 5/18/09 <0.005
7/7/08 <0.005 5/26/09 <0.005
7/14/08 0.006 6/1/09 <0.005
7/17/08 0.006 6/8/09 <0.005
7/21/08 <0.005 6/15/09 <0.005
7/28/08 <0.005 6/22/09 <0.005

Cyanide
There are 16 SIU that have CN as a limit.
SIU
Permit
Flow
(MGD)
Permit
Limit
(mg/L)
Allocated
CN
(lb/day)
1 Year
Avg Flow
(MGD)
1 Year
Avg CN
(mg/L)
1 Year
Avg CN
(lb/day)
5 Year
Avg Flow
(GPD)
5 Year
Avg CN
(mg/L)
5 Year
Avg CN
(lb/day)
# of
Violations
in 1 Year
# of
Violations
in 5 Years
Arvato
0.01
0.65
0.05421
0.00250
0.0025
0.00005
0.002699
0.0028
0.00006
0
0
ArvinMeritor
0.035
0.958
0.27964
0.01173
0.0051
0.00050
0.014067
0.008
0.00094
0
0
Asheville Metals
0.05
1
0.41700
0.00876
0.1609
0.01176
0.006661
0.1361
0.00756
0
2
Asheville Paint & Powder
0.015
1
0.12510
0.00258
0.0298
0.00064
0.00281
0.0231
0.00054
0
_
0
Borg Warner Thermal
0.02
0.65
0.10842
0.00916
0.0721
0.00551
0.009127
0.1925
0.01465
0
6
Continental Teves
0.09
1
0.75060
0.00897
0.0061
0.00046
0.008605
0.0067
0.00048
0
0
Eaton Electrical
0.035
0.65
0.18974
0.00104
0.0025
0.00002
0.008989
0.0023
0.00017
0
_
0
Kearfott
0.03
0.65
0.16263
0.00109
0.0085
0.00008
0.001357
0.1028
0.00116
0
1
Prince
0.021
1
0.17514
0.01648
0.0189
0.00260
0.014536
0.0308
0.00373
0
_
0
Saint-Gobain
0.001
0.65
0.00542
0.00042
0.1425
0.00049
0.000363
0.105
0.00032
0
0
Thermo Fisher-02
0.005
0.65
0.02711
0.00162
0.0025
0.00003
0.00162
0.0045
0.00006
0
_
0
Thermo Fisher-04
0.005
0.65
0.02711
0.00108
0.0025
0.00002
0.000108
0.0048
0.00000
0
0
Volvo
0.004
1
0.03336
0.00264
0.06
0.00132
0.003058
0.0438
0.00112
0
0
Williams Plating
0.0045
1
0.03753
0.00132
0.0176
0.00019
0.001531
_ 0.0747
0.00095
0
_
1
I 2.39300
0.02368
0.031761
From Headworks:
• CN Removal Rate is based off of the Literature Value 59%.
• The limiting factor is Water Quality Stream Standard of 0.005 mg/L.
• The Maximum Stream Standard Loading is 32.22 lb/day loading.
• The Uncontrollable concentration is 0.0055 mg/L or 0.69 lb/day.

lelow are the Industries that had violations over the years with CN.
SIU
Date of Violation
Flow (MGD)
CN Violation (mg/L)
CN Violation (lb/day)
Asheville Metal Finishing, Inc.
8/3/2006
0.016
3.2
0.42701
10/31/2007
0.0099
7.7
0.63576
Borg Warner Thermal Systems
1/12/2006
0.009
0.94
0.07056
6/29/2006
0.00762
0.68
0.04321
6/13/2007
0.0071
0.67
0.03967
11/16/2007
0.0061
1.2
0.06105
12/18/2007
0.0058
0.66
0.03193
5/13/2008
0.0098
0.89
0.07274
Kearfott Guidance and Navigation Corp.
3/5/2007
0.00061
?.2
0.011 19
Williams Plating Company
5/16/2007
0.0016
-).3
0.03069

Collection System Sampling
Beginning Date 10/17/08
Ending Date 12/22/06
During this phase of the sampling program samples were collected for three sites with in the
collection system and three locations at the WWTP. The locations are:
1) Round House (MH# ) this location covers both Swannanoa lines and Biltmore area
2) Inf. To Carrier Bridge PS (MH# )
3) Weaverville PS #2
4) Plant Inf. (before any returns)
5) Clarifier Eff.
6) Plant Eff - Composite
7) Plant Eff - Grab (compliance sample)

COLLECTION SYSTEM + PLANT INFLUENT
CN Sampling Composite (PACE) CN Sampling Composite (Meritech)
39 39 39 39 33 32 33 33
Landfill
Date RH CBI W # 2 PIH Leachat RH CBI W # 2 PIH
Tue 10/17/06 0.005 0.005 0.005 0.005
Wed 10/18/06 0.005 0.005 0.005 0.005
Thu 10/19/06 0.005 0.005 0.005 0.005
Fri 10/20/06 0.005 0.005 0.005 0.005
Tue 10/24/06 0.005 0.005 0.005 0.005
Wed 10/25/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Thu 10/26/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Fri 10/27/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Tue 10/31/06 0.005 0.005 0.005 0.005 0.005 0.005 0.006 0.005
Wed 11/01/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Thu 11/02/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Fri 11/03/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Mon 11/06/06
Tue 11/07/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Wed 11/08/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Thu 11/09/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Fri 11/10/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Mon 11/13/06
Tue 11/14/06 0.005 0.005 0.008 0.005 0.005 0.005 0.006 0.005
Wed 11/15/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Thu 11/16/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Fri 11/17/06 0.005 0.005 0.005 0.005
Mon 11/27/06
Tue 11/28/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Wed 11/29/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Thu 11/30/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Fri 12/01/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Mon 12/04/06
Tue 12/05/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Wed 12/06/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Thu 12/07/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Fri 12/08/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Mon 12/11/06
Tue 12/12/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Wed 12/13/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Thu 12/14/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Fri 12/15/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Mon 12/18/06
Tue 12/19/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Wed 12/20/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Thu 12/21/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Fri 12/22/06 0.005 0.005 0.008 0.005 0.005 0.005 0.005 0.005
Tue 12/26/06
Wed 12/27/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Thu 12/28/06 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Fri 12/29/06 0.005 0.005 0.008 0.005 0.005 0.005 0.005 0.006 0.005

Treatment Plant Evaluation
Beginning Date 1/2/07
Ending Date 5/21/07
The second phase of the study was to evaluate the WWTP for CN. The sampling locations were as follows:
1) Plant Inf. (before any returns)
2) Plant Inf. After the TC retum
3) TC pump station
4)TC scrubber water
5) Belt Filter Press Water
6) Clarifier Eff.
7) Plant Eff - Composite
8) Plant Eff - Grab (compliance sample)
this study was divided into two parts, Jan. through March and then April through May. The difference is during
the second half, chlorine bleach was added to the TC Scrubber Water in an attempt to reduce the CN. In
addition, powder ascorbic acid was used in the effluent samples instead of the liquid ascorbic acid. The
powder ascorbic acid was found to create less of an interference instead of the liquid. Please see data below:
Pace Date
Jan through March
average
Min
Max
April & May
average
min
max
Meritech Data
Jan through March
average
Min
Max
April & May
average
min
max
TCDWW TCSW
PIH PI TCDWW W/ CL2 TCSW W/ CL2 BFPF CE PE
0.012
0.005
0.035
0.014
0.005
0.036
0.150
0.006
1.100
0.390
0.021
3.900
began using powder ascorbic acid at first of April
0.008 0.013 0.029 0.050 0.108
0.007 0.006 0.005 0.009 0.006
0.009 0.024 0.099 0.210 0.620
0.049
0.005
0.350
TCDWW TCSW
PIH PI TCDWW W/ CL2 TCSW W/ CL2
0.007 0.009 0.130
0.005 0.008 0.007
0.012 0.009 0.879
0.005 0.006 0.032
0.005 0.005 0.006
0.005 0.009 0.146
0.024
0.005
0.072
0.012
0.005
0.031
0.010
0.005
0.019
0.031 0.050
0.008 0.005
0.063 0.100
0.016 0.010
0.007 0.005
0.026 0.035
BFPF CE PE
0.342 0.024 0.019 0.022
0.006 0.005 0.007 0.006
2.250 0.175 0.237 0.055
0.144
0.005
1.130
0.049
0.005
0.280
0.005
0.005
0.005
0.012 0.005
0.006 0.005
0.018 0.005
PE(Grab)
0.080
0.011
0.160
0.011
0.010
0.012
PE(Grab)
0.072
0.038
0.134
0.005
0.005
0.005

Date
CN Monitoring (PACE)
(HFI) (FBRA) (HPI) (TR)
Hydro Flume French Broad Hydro Plant Tail
Influent Above Influent Race
(FBRB)
French Broad
Below
CN Monitoring (Meritech)
(HFI) (FBRA) (HPI) (TR)
Hydro Flume French Broad Hydro Plant Tail
Influent Above Influent Race
(FBRB)
French Broad
Below
5/9/07
5/10/07
5/11/07
5/12/07
5/13/07
5/14/07
5/15/07
5/16/07
5/17/07
5/18/07
5/19/07
5/20/07
5/21/07
5/22/07
5/23/07
5/24/07
<0.005 0.0088 <0.005 <0.005
<0.005 <0.005 <0.005 <0.005
<0.005 <0.005 <0.005 <0.005
<0.005 <0.005 <0.005 0.0098
<0.005 <0.005 <0.005 <0.005
<0.005
<0.005
<0.005
<0.005
<0.005
0.0093
<0.005
<0.005 <0.005
<0.005 <0.005
<0.005 <0.005
<0.005 <0.005
<0.005
0.005 <0.005 <0.005
<0.005 <0.005 <0.005
<0.005 <0.005 <0.005
<0.005 <0.005 <0.005
<0.005

CN Sampling Composite
PACE Meritech PACE Meritech
Date TCDWW TCDWW Date TCSW TCSW
1/4/07 0.580 0.638 1/4/07 0.900 1.200
1/5/07 1.000 0.879 1/5/07 1.900 2.250
1/8/07 0.061 0.061 1/8/07 0.080 0.104
1/9/07 0.310 0.272 1/9/07 0.320 0.739
1/10/07 0.110 0.320 1/10/07 0.230 0.091
1/11/07 0.130 0.131 1/11/07 0.190 0.006
1 /12/07 0.0059 0.005 1/12/07 0.031 0.014
1/16/07 0.790 0.543 1/16/07 1.300 1.320
1/17/07 0.084 0.044 1/17/07 0.310 0.259
1/18/07 0.029 0.024 1/18/07 0.073 0.123
1/19/07 0.036 0.020 1/19/07 0.120 0.107
1/22/07 0.130 0.100 1 /22/07 0.290 0.276
1/23/07 0.120 0.080 1/23/07 0.280 0.227
1/24/07 0.130 0.109 1/24/07 0.330 0.246
1/25/07 0.059 0.045 1/25/07 0.250 0.185
1/26/07 0.076 0.134 1/26/07 0.170 0.043
1/29/07 0.041 0.011 1/29/07 0.047 0.013
1/30/07 0.043 0.013 1/30/07 0.049 0.014
1/31/07 0.040 0.012 1/31/07 0.046 0.012
2/1/07 0.035 0.012 2/1/07 0.045 0.020
2/2/07 0.028 0.005 2/2/07 0.035 0.017
2/5/07 0.030 0.015 2/5/07 0.058 0.005
2/6/07 0.026 0.011 2/6/07 0.091 0.048
2/7/07 0.110 0.116 2/7/07 0.310 0.175
2/8/07 0.070 0.053 2/8/07 0.220 0.230
2/9/07 0.200 0.161 2/9/07 0.680 0.771
2/12/07 1.100 0.229 2/12/07 3.900 0.827
2/13/07 0.180 0.141 2/13/07 0.860 0.903
2/14/07 0.240 0.218 2/14/07 0.0059 0.005
2/15/07 0.290 0.095 2/15/07 1.200 1.230
2/16/07 0.025 0.012 2/16/07 0.380 0.401
2/19/07 0.005 0.042 2/19/07 0.190 0.204
2/20/07 0.027 0.016 2/20/07 0.180 0.127
2/21/07 0.140 0.123 2/21/07 0.420 0.460
2/22/07 0.097 0.010 2/22/07 0.470 0.467
2/23/07 0.075 0.059 2/23/07 0.460 0.526
2/26/07 0.011 0.005 2/26/07 0.120 0.098
2/27/07 0.0095 0.005 2/27/07 0.063 0.047
2/28/07 0.011 0.00t 2/28/07 0.120 0.092
3/1/07 0.013 0.005 3/1/07 0.160 0.165
3/2/07 0.0081 0.007 3/2/07 0.270 0.390
3/5/07 0.044 0.025 3/5/07 0.160 0.108
3/6/07 0.005 0.005 3/6/07 0.034 0.138
3R/07 0.0082 0.005 3/7/07 0.005 0.030
3/8/07 0.015 0.014 3/8/07 0.021 0.022
3/9/07 0.073 0.005 3/9/07 0.060 0.022

3/12/07 0.067 0.039 3/12/07 0.080 0.031
3/13/07 0.055 0.045 3/13/07 0.180 0.091
3/14/07 0.0060 0.012 3/14/07 0.053 0.059
3/15/07 0.005 0.012 3/15/07 0.005 0.020
3/16/07 0.096 0.113 3/16/07 0.650 0.500
3/19/07 0.160 0.180 3/19/07 0.082 0.083
3/20/07 0.140 0.119 3/20/07 0.081 0.083
3/21/07 0.230 0.138 3/21/07 0.180 0.208
3/22/07 0.230 0.255 3/22/07 0.690 0.856
3/23/07 0.220 0.201 3/23/07 0.660 0.549
3/26/07 0.290 0.256 3/26/07 0.580 0.488
3/27/07 0.190 0.249 3/27/07 0.820 0.848
3/28/07 0.064 0.076 3/28/07 0.250 0.232
3/29/07 0.098 0.095 3/29/07 0.088 0.074
3/30/07 0.220 0.177 3/30/07 0.088 0.343
4/2/07 0.071 0.059 4/2/07 0.031 0.025
4/3/07 0.042 0.025 4/3/07 0.005 0.005
4/4/07 0.013 0.005 4/4/07 0.005 0.005
4/5/07 0.099 0.045 4/5/07 0.0089 0.007
4/9/07 0.022 0.010 4/9/07 0.005 0.005
4/10/07 0.0075 0.005 4/10/07 0.0070 0.005
4/11/07 0.065 0.025 4/11/07 0.018 0.005
4/12/07 0.012 0.006 4/12/07 0.020 0.016
4/13/07 0.029 0.021 4/13/07 0.005 0.005
4/16/07 0.005 0.025 4/16/07 0.005 0.049
4/17/07 0.005 0.006 4/17/07 0.005 0.005
4/18/07 0.034 0.024 4/18/07 0.018 0.012
4/19/07 0.005 0.098 4/19/07 0.028 0.043
4/20/07 0.012 0.146 4/20/07 0.076 0.703
4/23/07 0.043 0.005 4/23/07 0.240 0.264
4/24/07 0.060 0.040 4/24/07 0.090 0.132
4/25/07 0.005 0.005 4/25/07 0.190 0.060
4/26/07 0.005 0.008 4/26/07 0.005 0.360
4/27/07 0.011 0.005 4/27/07 0.620 0.032
4/30/07 0.035 0.009 4/30/07 0.110 0.011
5/1/07 0.0051 0.071 5/1/07 0.029 0.043
5/2/07 0.010 0.005 5/2/07 0.190 0.056
5/3/07 0.046 0.034 5/3/07 0.023 0.007
5/4/07 0.0094 0.005 5/4/07 0.120 0.013
5/7/07 0.0091 0.008 5/7/07 0.071 0.005
5/8/07 0.030 0.017 5/8/07 0.044 0.046
5/9/07 0.009 5/9/07 0.007
5/10/07 0.020 0.011 5/10/07 0.0061 0.005
5/11/07 0.021 0.005 5/11/07 0.0076 0.005
5/14/07 0.019 0.012 5/14/07 1.100 1.130
5/15/07 0.005 0.005 5/15/07 0.028 0.005
5/16/07 0.005 0.005 5/16/07 0.027 0.005
5/17/07 0.0063 0.005 5/17/07 0.460 0.005
5/18/07 0.018 0.005 5/18/07 0.230 0.115
5/21/07 0.021 0.005 5/21/07 0.530 0.257
5/22/07 0.018 0.005 5/22/07 0.041 0.048
5/23/07 0.140 5/23/07 0.170

5/24/07 0.005 0.005 5/24/07 0.160 0.058
5/25/07 0.0074 0.005 5/25/07 0.027 0.005
5/29/07 0.058 0.005 5/29/07 0.0090 0.005
5/30/07 0.043 0.005 5/30/07 0.013 0.005
5/31/07 0.025 5/31/07 0.005
6/1/07 0.021 6/1/07 0.005
6/4/07 0.036 6/4/07 0.005
6/5/07 0.038 6/5/07 0.018
6/6/07 0.087 6/6/07 0.062
6/7/07 0.350 6/7/07 0.100

1.200
1.000
0.800
as 0.600
a
0.400
0.200
0.000
OA
(1,O
TC Scrubber Water
J
1
O
���OO'l
h� 41
TCSW
TCSW/C

1.2 -
0.8
0.6
0.4
0.2
0
TC Pump Station
1 1! 1 1 1 1 1 1 1 I 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1
11 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
t(1' trb (1 ri>'\ (0/ Cl>(1/ 4 4N 41/ 41/ ‘)N t),1' 4 4 4\ 41'
PACE
Meritech

4
4.5000
4.0000
3.5000
3.0000
2.5000
2.0000
1.5000
1.0000
0.5000
0.0000
TC Scrubber Water
IIII II IIIIIIIII II�tll 11 11111111 11
Ii1111111
IIIIIIIIIIillili11 11 liillllllll1 1 11 llin illl1 1 11 lil
c)rzY�� ,�b ?0.1 � 3 (-0/ \'� r5 3�\ 41/ k) k)1\ b9/ 4 hip ‹,P 41/
PACE
Meritech

Changed to Dry Ascrobic
Date Pace Meritech
Mon 03/19/07 0.005 0.005
Thu 03/22/07 0.011 0.005
Mon 03/26/07 0.005 0.005
Mon 04/02/07 0.005 0.005
Mon 04/09/07 0.005 0.005
Mon 04/16/07 0.005 0.005
Thu 04/19/07 0.012 0.005
Mon 04/23/07 0.005 0.005
Mon 04/30/07 0.010 0.005
Mon 05/07/07 0.005 0.005
Mon 05/14/07 0.005 0.005
Mon 05/21/07 0.027 0.005
Tue 05/29/07 0.005 0.005
Mon 06/04/07 0.006 0.005
Mon 06/11/07 0.005 0.005
Mon 06/18/07 0.013 0.005
Mon 06/25/07 0.005 0.005
Mon 07/02/07 0.005 0.005
Mon 07/09/07 0.005 0.005
Mon 07/16/07 0.005 0.005
Mon 07/23/07 0.005 0.005
Thu 07/26/07 0.008 0.005
Mon 07/30/07 0.009 0.005
Mon 08/06/07 0.005 0.005
Mon 08/13/07 0.006 0.005
Mon 08/20/07 0.005 0.005
Mon 08/27/07 0.005 0.005
Tue 09/04/07 0.005 0.005
Mon 09/10/07 0.017 0.005
Mon 09/17/07 0.018 0.005
Mon 09/24/07 0.008 0.005
Mon 10/01/07 0.006 0.005
Mon 10/08/07 0.013 0.005
Mon 10/15/07 0.011 0.005
Thu 10/18/07 0.009 0.005
Mon 10/22/07 0.009 0.005
Mon 10/29/07 0.005 0.005
Mon 11/05/07 0.009 0.005
Mon 11/12/07 0.009 0.005
Mon 11/19/07 0.005 0.006
Mon 11/26/07 0.015 0.005
Mon 12/03/07 0.007 0.005
Mon 12/10/07 0.016 0.005
Mon 12/17/07 0.005 0.005
Wed 12/26/07 0.005 0.005
Wed 01/02/08 0.006 0.005
Mon 01/07/08 0.005 0.005
Mon 01/14/08 0.005 0.005
Tue 01/22/08 0.009 0.005
Thu 01/24/08 0.005 0.005
Mon 01/28/08 0.010 0.005
Tue 02/05/08 0.010 0.005
Mon 02/11/08 0.009 0.005
Mon 02/18/08 0.010 0.005
Mon 02/25/08 0.049 0.005
Mon 03/03/08 0.005 0.005
Mon 03/10/08 0.005 Q.005
Mon 03/17/08 0.039 0.005
Mon 03/24/08 0.031 0.005
Mon 03/31/08 0.005 0.005
Wed 04/02/08 0.005 0.005
Mon 04/07/08 0.005 0.005
Mon 04/14/08 0.006 0.005
Thu 04/17/08 0.011 0.005
Tue 04/22/08 0.008 0.005
Mon 04/28/08 0.005 0.005

0.200
0.180
0.160
0.140
0.120
0.100
0.080
0.060
0.040
0.020
0.000
0 0 0 0 CO
O O O O O
NNNNN
so O © O O
- r- '- -
- ct) LC) • I` O)
Liquid & Dry Ascorbic
11/10/2006
0 0 0 0 0
000
N N N N ON
O O O O O
MU,
11/10/2007
co 0
0N
00
e-
1
Pace
Meritech

0.060
0.050
0.040
0.030
0.020
0.010
0.000
Dry Ascrobic
AAATLA Pc/VM Arfr
N. is r,- r- I- r-. N N- r� • r- i- r- r- r- r- r- l- r- o 0 0 0 0 0 0 0 0
0 o 0 0 0 o 0 0 0 0 o O o O o 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 o 0 0 0 0 0 0 0 o 0
N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N
O Fc...41. (0 O NT CO - t0 0) CO (0 0 CO) r- 10 a) N (O 0 A e r d o M c- Tr OD
CO = N = N N N ` _O N N N N N = M = M ` N
M �1 V' CO ▪ (D (00 ti co Cr) r-' 0 O . . N N
Pace
Meritech

0.18
0.16
0.14
0.12
Effluent CN Grab Samples
—PACE
Meritech
0.08
0.06
0.04
0.02
0
n r` r` r` ti r— r - r- ti ti co co co co
0 0 0 0 0 O 0 0 0 0 0 0 0 0 0 0
o O 0 0 0 0 0 0 0 0 Co 0 CO 0 0 0
N N N N N N N N N CV N N N N N N
N N N C� N N N N N N N N N N N N
N- N CO 4 Lo
N COd 10 (D Ns CO 03 0 r N r N M

Date
PE CN
MSD Plant Effluent CN
Date
PE CN
Date
PE CN
1/2/08
1/7/08
1/14/08
1/22/08
1/24/08
1/28/08
2/5/08
2/11/08
2/18/08
2/25/08
3/3/08
3/10/08
3/17/08
3/24/08
3/31/08
4/2/08
4/7/08
4/14/08
4/17/08
4/22/08
4/28/08
5/5/08
5/12/08
5/19/08
5/27/08
6/2/08
6/9/08
6/16/08
6/23/08
6/30/08
7/7/08
7/14/08
7/17/08
7/21/08
7/28/08
8/4/08
8/11/08
8/18/08
8/25/08
9/2/08
9/8/08
9/15/08
9/22/08
9/29/08
10/6/08
10/13/08
10/20/08
10/23/08
10/27/08
11/3/08
11/10/08
11/17/08
11/24/08
12/1/08
12/8/08
12/15/08
12/22/08
12/29/08
0.0063
0.0025
0.0025
0.0088
0.0025
0.0100
0.0100
0.0090
0.0100
0.0490
0.0025
0.0025
0.0390
0.0310
0.0025
0.0025
0.0025
0.0064
0.0110
0.0079
0.0025
0.0025
0.0170
0.0025
0.0025
0.0025
0.0025
0.0025
0.0060
0.0060
0.0025
0.0060
0.0060
0.0025
0.0025
0.0025
0.0025
0.0025
0.0050
0.0025
0.0070
0.0170
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0070
0.0140
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
1/5/09
1/12/09
1/20/09
1/26/09
2/2/09
2/9/09
2/16/09
2/23/09
3/5/09
3/9/09
3/16/09
3/23/09
3/30/09
4/6/09
4/13/09
4/20/09
4/23/09
4/27/09
5/4/09
5/11/09
5/18/09
5/26/09
6/1/09
6/8/09
6/15/09
6/22/09
6/29/09
7/6/09
7/13/09
7/20/09
7/23/09
7/27/09
8/3/09
8/10/09
8/17/09
8/24/09
8/31/09
9/8/09
9/14/09
9/21/09
9/28/09
10/5/09
10/12/09
10/19/09
10/22/09
10/26/09
11/2/09
11/9/09
11/16/09
11/23/09
11/30/09
12/7/09
12/14/09
12/21/09
12/28/09
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0130
0.0025
0.0025
0.0025
0.0025
0.0050
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025 Aver 0.0045
0.0025 Max 0.0490
0.0025
0.0025
0.0025 Detection Limit
0.0025 0.005
0.0080
0.0025
0.0025 if sample results reported below
0.0025 detection limit, used 1/2 detection
0.0025 limit in calculations
0.0025
0.0025
0.0025
0.0220
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
1/4/10
1/11/10
1/19/10
1/25/10
1/28/10
2/1/10
2/8/10
2/15/10
2/22/10
3/1/10
3/8/10
3/15/10
3/22/10
3/29/10
4/5/10
4/12/10
4/19/10
4/26/10
5/3/10
5/10/10
5/17/10
5/24/10
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025