NC0074268_Permit Issuance_19970226

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
February 26, 1997
Mr. Donald E. Carmichael. P.E.
City of Gastonia
Post Office Box 1748
Gastonia, North Carolina 28053-1748
4 i
EDEHNF�
Subject: NPDES Permits Issuance
Permit No. NC0020192
Catawba Creek WWTP
Permit No. NC0074268
Crowders Creek WWTP
Permit No. NC0020184
Long Creek WWTP
Gaston County
Dear Mr. Carmichael:
In accordance with the discharge permit applications received on March 11, 1996, the Division is
forwarding herewith the subject NPDES permits. These permits are 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 December 6, 1983.
This letter responds to comments made in your December 19, 1996 letter. The format of this letter is
similar to the December 19, 1996 letter so that Gastonia can easily reference their comments and questions.
New Monitoring Requirements
The Division requires monitoring for all parameters identified as pollutants of concern. A pollutant
of concern is a parameter that is likely to be present in a given discharge. Reasonable potential analyses
are conducted for all pollutants of concern monitored to determine if these pollutants will be limited.
Explanations for identification of new pollutants of concern are contained in the following paragraphs.
Three industries discharge mercury to Catawba Creek WWTP. Review of Catawba Creek WWTP
pretreatment data for the period 12/95-4/96 indicated one detection equal to 0.3 ug/1 (greater than the
allowable concentration of 0.013 ug/l) on 3/7/96. Catawba Creek WWTP is scheduled to be
decommissioned within a year. In addition, there is some uncertainty associated with mercury analyses.
Therefore, monitoring (no limit) for mercury will be required in the permit.
Of the facilities which discharge to Crowders Creek WWTP, none is expected to discharge
mercury. However, review of Crowders Creek WWTP pretreatment data for the period 1/94-6/95
indicated three detections: 0.25 ug/1 (4/29/94), 0.60 ug/1 (7/22/94), and 2.2 ug/1 (8/26/94). All three
detections were greater than the allowable concentration of 0.029 ug/l. Because there were three
detections over the water quality standard, mercury will be limited in the proposed NPDES permit. In
addition, toluene was detected at a concentration above the water quality standard and monitoring (no
limit) will be required in the final NPDES permit.
Antimony, beryllium, chloride, and chloroform monitoring is only required for the discharge to
the South Fork Catawba River (Class WS-V stream). Long Creek is a Class C stream and thus, water
quality standards for these parameters are not as stringent as in water supply classified waters. Results
from an APAM, indicated that concentrations detected of these four parameters were greater than
corresponding water quality standards. Thus, they were identified as pollutants of concern. However,
they will not be limited because there was only one detection in the case of each parameter.
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

Mr. Carmichael
February 26, 1997
Page 2
The frequencies specified for the newly identified pollutants of concern are standard for toxicants
and other non -conventional parameters. These frequencies are based on Division policy and the
facility's treatment class. The City may request a re-evaluation of these requirements after data from 12
sampling events are collected
Stream Monitoring Requirements
The Division concurs with Gastonia's request to eliminate instream monitoring of total nitrogen
and total phosphorus from all three discharge permits. Catawba Creek WWTP is scheduled to be
decommissioned within a year, so that the amount of data collected at this facility would be limited. At
Long Creek WWTP, the Division does not want to discourage use of the automated stream monitoring
system. However, as stated in the Catawba River Basinwide Water Quality Management Plan (July
1995), studies have documented eutrophic conditions in Lake Wylie and several of its major tributaries.
The Division agrees with Gastonia that a special study (perhaps including a coordinated monitoring
program) may be a better tool to evaluate nutrient problems in the Lake Wylie region.
Metals and Cyanide Limitations
The Division concurs with Gastonia that metals' concentrations appear to be generally decreasing
since the onset of using clean sampling techniques. However, review of the effluent data from all three
facilities indicate that there remain periodic instances of relatively higher concentrations. Thus, the
Division anticipates receiving the results of the clean sampling techniques studies in March or April
1997, but cannot postpone issuance of the Gastonia permits until that date.
Because review of the effluent data from all three facilities indicate periodic instances of relatively
higher concentrations, conducting reasonable potential analyses on data collected from November 1995
to the present would not necessarily benefit Gastonia. If, after at least one year of data are collected,
some permit requirements are no longer representative of a facility's discharge, Gastonia may apply for
permit modifications.
Review of weekly average and daily maximum limit calculations indicated that some errors were
made in the draft permits. In the Catawba Creek WWTP permit, the daily maximum limits for cadmium
and lead should be 5.5 ug/1 and 37.4 ug/l, respectively. The Long Creek WWTP permit has a single
effluent sheet for each of the three different discharge scenarios. There are no changes to the 8.0 MGD
discharge to Long Creek. However, on the effluent sheet pertaining to the 8.0 MGD discharge to South
Fork Catawba River, for cadmium, the weekly average should be 19.6 ug/1 and the daily maximum
should be 49.0 ug/l. In addition, on the effluent sheet pertaining to the 16.0 MGD discharge to South
Fork Catawba River, the weekly averages and daily maximums should be as designated in the
following table:
Parati eter
Weekly. 1.ver4ge {ug/l)
wily IVlaxim0M (ug,:l
Cadmium
10.8
27.0
Cyanide
27.0
118.7
Lead
134.9
182.3

Mr. Carmichael
February 26, 1997
Page 3
Long Creek WWTP Total Nitrogen Limits
The Division agrees that Fleischmann's Yeast appears to contribute a significant amount of
nitrogen to the Long Creek WWTP. Unfortunately, conditions in the Lake Wylie region prevent the
Division from modifying the total nitrogen limits. As stated earlier in this letter, studies have
documented nutrient problems in Lake Wylie and several of its major tributaries. Extensive water
quality modeling conducted for this region demonstrated the need to implement a nutrient management
strategy. The first strategy developed in 1992 was modified and made less stringent in 1995. The total
nitrogen effluent limits in the Long Creek WWTP were modified from 4.0 mg/I (summer) and 8.0 mg/1
(winter) in 1992 to 6.0 mg/1 (summer) and no limit (winter) in 1995. The Division believes the most
recent limits are necessary to effectively manage nutrients in the Lake Wylie region.
Crowders Creek WWTP Total Nitrogen and Total Phosphorous Limits
The Division concurs with Gastonia's request to phase in nutrient limits at this WWTP. Please
note that the Effluent Limitations and Monitoring Requirements page has been corrected to properly
indicate that these limits are not effective until September 1, 2001.
Catawba Creek WWTP - Decommissioning Flows (9.0, 6.0, and 3.0 MGD)
The Division has modified the Catawba Creek WWTP NPDES permit to include effluent
limitations and monitoring requirements (including toxicity test requirements) to correspond with
anticipated flow decreases of 6.0 and 3.0 MGD associated with the decommissioning. The format is
similar to that of the draft permit. Specifically, special conditions pages immediately follow the Effluent
Limitations and Monitoring Requirements pages.
In Part III, Section B. Pretreatment Program Requirements, Number 11. Public Notice of the
NPDES permit, the requirement has been changed from two to four months. The four month time limit
allows the Division to complete work and processing for one compliance period before beginning the next.
A six month requirement would cause subsequent compliance periods to overlap.
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, Post Office Drawer 27447, Raleigh, North Carolina 27611-7447. Unless such demand is
made, this decision shall be final and binding.
Please take note that this permit is not transferable. Part II, E.4. addresses the requirements to be
followed in case of change in ownership or control of this discharge.
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, or any other Federal
or Local governmental permit that may be required.
If you have any questions concerning this permit, please contact Paul B. Clark at telephone number
[phone], extension 580.
Sincerely,
Original Signed By
David A. Goodrich
A. Preston Howard, Jr., P.E.
cc: Central Files
Mooresville Regional Office, Water Quality Section
Mr. Roosevelt Childress, EPA
Permits and Engineering Unit
Facility Assessment Unit
Aquatic Survey and Toxicology Unit

Permit No. NC0074268
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, 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,
City of Gastonia
is hereby authorized to discharge wastewater from a facility located at
Crowders Creek Wastewater Treatment Plant
off US Highway 321
south of Gastonia
Gaston County
to receiving waters designated as Crowders Creek in the Catawba River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I,
,II, III, and IV hereof.
The permit shall become effective April 1, 1997
This permit and the authorization to discharge shall expire at midnight on September 30, 2001
Signed this day February 26, 1997
Orr: nal Signeo
David A Goodrich
A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission

SUPPLEMENT TO PERMIT COVER SHEET
City of Gastonia
is hereby authorized to:
Permit No. NC0074268
1. Continue to operate an existing 6.0 MGD . wastewater treatment . facility consisting of a
mechanical bar screen, grit removal, an influent pump station, dual primary clarifiers, dual
anoxic/oxic basins for biological phosphorus removal which includes anaerobic basins with
mechanical mixers and aerobic basins with diffused aeration, dual final clarifiers, two,
polishing/stabilization ponds, a chlorine contact chamber (gas), SO2 dechlorination, a static
post aerator, a dissolved air floatation (DAF) unit, four anaerobic digesters, one gravity
sludge thickener, one filter belt press dewatering unit, alum and caustic addition. Wastewater
treatment facility is located at Crowders Creek Wastewater Treatment Plant, off US Highway
321, south of Gastonia, Gaston County (See Part III of this permit), and
2. Discharge wastewater from said treatment works at the location specified on the attached
map into Crowders Creek which is classified Class C waters in the Catawba River Basin.

ROAD CLASSIFICATION
PRIMARY HIGHWAY
HARD SURFACE
LIGHT -DUTY ROAD, HARD OR
IMPROVED SURFACE
SECONDARY HIGHWAY
HARD SURFACE =MCI UNIMPROVED ROAD = = =
Latitude 35°10'10" Longitude 81°11'48"
Map # G14NW Sub -basin 030837
Stream Class C
Discharge Class
Receiving Stream Crowders Creek/Catawba River
Design Q 6.0 MGD Permit expires 9/30/01
0
0
SCALE 1:24 000
1 MILE
7000 FEET
s;,rieac>.
Meesei-
0
1 KILOMETER
CONTOUR INTERVAL 10 FEET
City of Gastonia
NC0074268
Gaston County
Crowders Creek WWTP

Permit No. NC0074268
SUPPLEMENT TO EFFLUENT LIMITATIONS
AND MONITORING REQUIREMENTS
SPECIAL CONDITIONS for Flow of 6.0 MGD
A(2). CHRONIC 'TOXICITY PASS/FAIL PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised November 1995, or subsequent
versions.
The effluent concentration at which there may be no observable inhibition of reproduction or significant
mortality is 41 % (defined as treatment two in the procedure document). The permit holder shall perform
quarterly monitoring using this procedure to establishcompliancewith the permit condition. The tests will be
performed during the months of Mar., Jun., Sept., and Dec.. Effluent sampling for this testing shall be
performed at the NPDES permitted final effluent discharge below all treatment processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGP3B.
Additionally, DWQ Form AT-1 (original) is to be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of
Water Quality
4401 Reedy Creek Road
Raleigh, North Carolina 27607
Test data shall be complete and accurate and include all supporting chemical/physical measurements performed
in association with the toxicity tests, as well as all dose/response data. 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
Branch at the address cited above. -
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring. will
begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement will
revert to quarterly in the months specified above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, then monthly
monitoring will begin immediately until such time that a single test is passed. Upon passing, this monthly test
requirement will revert to quarterly in the months specified above. _
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.
QCL P/F Version 9/96

A (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Permit No. NC0074268
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from outfall(s) serial number
001. Such discharges shall be limited and monitored by the Permittee as specified below:
EFFLUENT;; CHARACTERISTIC;
Monthlly`,
Average;
IT
Weekly
Average
Daily
aximUm
ONITORI
M+l3asurement
Frequency ;__
yam
%►P
QUIR MENT
e
..................
cation?
Flow
BOD, 5-day, 20°C2
TSS2
6.0 MGD
13.0 mg/I
19.5 mg/I
Continuous
Daily
Recording
Composite
I or E
E,I
30.0 mg/I
45.0 'mg/I
Daily
Composite
E,I
NH3-N, (April 1 - October 31)
NH3-N, (November 1 - March 31)
Dissolved Oxygen3
Fecal Coliform (geometric mean)
Temperature
2.0 mg/I
10.0 mg/I
200/100 ml.
400/100 ml
Daily
Daily
Daily
Daily
Daily
Composite
Composite
Grab
Grab
Grab
E
E
E,U,D
E
E,U,D
Total. Residual Chlorine
28.0 ug/I
Daily
Grab
E
Conductivity
3/week
Grab
U,D.
Total ,Nitrogen (No2+ No3 + TKN) (April 1- Oct 31)
6.0 mg/I 4
Weekly
Composite
E
Total Nitrogen (NO2+No3+TKN) (Nov 1 - March 31)
Total Phosphorus
Chronic Toxicity 5
Cadmium
Weekly
Composite
1.0 mg/I 4
Weekly
• Quarterly
Composite
Composite
4.9 ug/I
12.2 ug/I
Weekly
Composite
Chromium
122 ug/I
486 ug/I
Weekly
Composite
E
Cyanide
Lead
12.2 ug/I
53.5 ug/I
Weekly
Grab
E
60.8 ug/I
82.2 ug/I
Weekly
Composite
Mercury
0.029 ug/I
0.116 ug/I
Weekly
Grab
Selenium
12.2 ug/I.
48.7 ug/I
Weekly
Composite
Toluene
2/month
EQ
Gra. {�
Notes:
1 Sample locations: E Effluent, I - Influent, U Upstream at NCSR 1108, D - Downstream at a) NCSR 2424 and b) NCSR 564. Instream
monitoring shall be grab samples taken 3/wk (Jun -Sep) and 1/wk (Oct -May).
2 The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the respective influent value (85% removal).
3 The dailyaverage dissolved oxygen effluent concentration shall not be Less than 6.0 mg/I.
4 TN and TP limits become effective September 1, 2001.
5 Chronic Toxicity (Ceriodaphnia), P/F, 41 %; March, June, September, and December; See Supplement to Effluent Limitations and Monitoring
Requirements Page - Special Conditions for flow of 6.0 MGD.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored daily at the effluent by grab sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

DEHNR/D W Q
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0074268
Applicant/Facility Name: City of Gastonia/Crowders Creek WWTP
Applicant Address: P.O. Box 1748, Gastonia, NC 28053-1748
Facility Address: Highway 321, Gastonia
Permitted Flow 6.0 MGD
Type of Waste: Domestic-42%/Indus-58%
Facility Class IV
Facility/Permit Status: Existing/Renewal
County: Gaston
Regional Office: Mooresville
USGS Topo Quad: Gl4NW
Stream Characteristics:
Receiving Stream Crowders Creek
Stream Classification C
Subbasin 030837
Drainage Area (mi2): 70.4
Summer 7Q10 (cfs) 13.3
Winter 7Q10 (cfs): 20
Average Flow (cfs): 82
IWC (%): 41
Wasteload Allocation Summary
Monitoring and limits will remain the same for the majority of parameters in the permit.
Oxygen ccn5umint: wast`..s have z ner:il1'- iot been a problem.
have problems with nutrients and therefore the phased total nitrogen and total phosphorus
limits will remain in the permit. Oil and grease monitoring will be discontinued because
review of DMR data indicated the majority of results were below the detection level for the
analytical method used. Those results above the detection level were below the commonly
used limit of 30.0 mg/l.
A reasonable potential analysis indicated that cadmium, chromium, cyanide, lead, and
selenium will be limited during the forthcoming permit period. Gastonia expressed concern
with meeting metals limits on a consistent basis and they believed that Crowders Creek
WWTP would be less likely to violate metals limits if the NPDES permit had weekly
averages as well as daily maximum values. Thus, the Division agreed to add weekly
averages to the NPDES permit for limited parameters.
Copper, nickel, silver, and zinc monitoring are required in the pretreatment LTMP and
monitoring for these three parameters will not be required in the NPDES permit.
Review of pretreatment allocation table for Crowders Creek WWTP indicated that none of
the facilities is expected to discharge mercury, although mercury monitoring is required as
part of the Long Term Monitoring Plan (LTMP). Review of LTMP data for the period
1/94-6/95 indicated three detections: 0.25 ug/1 (4/29/94), 0.60 ug/1 (7/22/94), and 2.2 ug/1
(8/26/94). All three detections were greater than the allowable concentration of 0.029 ug/1.
There is uncertainty associated with mercury analyses. Most laboratories have quantitation
limits greater than the water quality standard. Quantitation limits are normally 0.2 ug/1
whereas the water quality standard is 0.012 ug/1. In addition, when analyzing for very low
concentrations of contaminants, there is a significant potential for outside contamination of
samples generating incorrect results. However, even with this uncertainty, because there
Page 1 of 3

were three detections over the water quality standard, mercury will be limited in the
proposed NPDES permit. (See table on previous page for limits)
Crowders Creek WWTP has a Quarterly Chronic Pass/Fail Toxicity test with a 42%
effluent concentration limit. They are under a SOC 8/21/95-11/30/96 and are currently
meeting unrevised metals limits. The SOC requires them to conduct more extensive
toxicity testing in at attempt to quantify the toxicity and identify possible sources of
toxicity. Since 1994, they have conducted toxicity tests using graduated effluent
concentrations (11,21,31,42,61). They failed several toxicity tests during 1993, 1994,
and 1995, but have passed six of their last eight toxicity tests.
As mentioned in the report form Aquatic Toxicology to the Mooresville Regional Office
(MRO), 1/96-3/96, Crowders Creek WWTP met its permit limitation for chronic toxicity
and that "additional testing" could not be conducted until a violation occurs. 4-7/96, facility
in compliance and Gastonia submitted a request for DWQ to rescind EMC WQ 93016. In
TCP Report (8/95), Gastonia suggested that primary cations and anions of effluent salts
were sodium, sulfates, and chlorides. Upon limit effluent characterization testing, the City
targeted metals and surfactants as potential sources of toxicity. To further investigate the
causes of toxicity, the City proposed source identification studies and toxicity treatability
testing. Gastonia has spent considerable time and monies on treatment technologies which
may prove ineffective if toxicants are not effectively reduced by those processes. Aquatic
Tox has stressed the importance of source reduction activities and complete
characterization/ identification of the effluent toxicants. Crowders Creek WWTP's most
recent toxicity self -monitoring data form 6/95-6/96 shows three of eight tests which did not
meet the required chronic permit limitation of 42 percent. Although three of the past four
test results show compliance with 42 per-centairnit, Aquatic -Toxicology is not
certain that causative toxicants have been sufficiently identified and reduced/eliminated to
the ; .;_t:-At that the Citywill:be able to achieve cortsist.awc:.,noli: ice;:
Note: A mathematical round error indicated that the instream waste concentration (IWC)
should be 41 percent instead of 42 percent. Crowders Creek WWTP is still expected to be
in compliance with the new limit (because this is only minor change in the (IWC).
Instream Monitoring
Crowders Creek WWTP has one upstream monitoring station and two downstream
monitoring stations at NCSR 2424 and NCSR 564. Instream data were examined from
January 1994 thorough July 1996. The data summaries below refer to monthly averages.
- Dissolved oxygen concentrations did not demonstrate a consistent pattern instream.
About 50 percent of the time, DO values become progressively lower with distances
downstream. About 30 percent of the time, DO values dropped and then recovered by the
most downstream station. DO values remained constant in a few instances.
- pH values and BOD concentrations remained generally constant at all three stations.
- Fecal coliform values r na ged from 63/100 ml (NCSR564-most downstream location) to
1664/100 ml (upstream) and were lower down- than upstream almost 50 % of the time.
- Conductivity values were often higher at NCSR 2424, but then decreased at NCSR 564
indicating that the stream appears to be recovering from the discharge of wastewater
containing metals and ions into the receiving water.
- The majority of the ammonia -nitrogen values were below 0.10 mg/l at the upstream
station, although the highest values measured during the monitoring period (11.0 mg/1) also
occun-ed at the upstream station. Ammonia nitrogen concentrations generally. increased at
NCSR 2424, but then decreased (but not to upstream concentrations) at NCSR 564. It
appears the stream receives some impact from ammonia -nitrogen additions, but recovers
Page 2 of 3

downstream. In addition, it should be noted that none of the ammonia -nitrogen values
were very high with the exception of the one 11.0 mg/I value at the upstream station.
Instream data indicate the Crowders Creek WWTP is not having an adverse impact on the
receiving water quality. DO is a good indicator of the general health of the stream and DO
monitoring will continue. pH, BOD, and fecal coliform monitoring do not provide any
useful information and thus monitoring for these three parameters will be discontinued.
Crowders Creek WWTP discharges metal sand ions and thus conductivity monitoring will
also continue and instream monitoring for ammonia -nitrogen will be changed to total
nitrogen to provide a greater amount of information on nutrients associated with nitrogen.
Proposed Schedule for Permit Issuance
Draft Permit to Public Notice: 10/09/96
Permit Scheduled to Issue: 11/25/96
State Contact
If you have any questions on any of the above information or on the attached permit, please
contact Paul Clark at [phone] ext. 580.
Copies of the following are attached to provide further information on
permit development:
1. Reasonable potential analysis,
2. Existing permit effluent sheets, and
3. Propcise;l draft permit.
Special ScI!. durle Requirerne and additional comments ' •om Reviewers:
Recommended by: Date:
Reviewed by
Regional Supervisory----- Date:
Permits & n ering: Date:
Page 3 of 3

NC0074268 Summary
September 1996
November 18, 1996 (revised).
City of Gastonia/Crowders Creek wastewater treatment facility has applied for renewal of
their discharge permit which allows the facility to discharge 6.0 MGD.
City of Gastonia's Catawba Creek, Crowders Creek, and Long Creek WWTPs discharge
into different arms of Lake Wylie and are all experiencing the following problems:
1. Toxicity: the three facilities (under SOCs) receive wastewater from several industries.
2. Nutrients: Point and nonpoint sources of pollution contribute nutrients to Lake Wylie.
There are management strategies unique to Long, Catawba, and Crowders creeks that
require point dischargers on these waters to abide by certain limits.
There are several industries in the vicinity of Crowders Creek (i.e. CR Industries). ,
Industries generally do not want to connect to City of Gastonia/Crowders Creek WWTP
because the cost would be prohibitive and the limits imposed by Gastonia should they
connect would be more stringent than their existing NPDES permit limits. The City of
Gastonia would like connecting industries to cover the expenditure of constructing
sewerlines that would enable Gastonia to obtain more paying customers. Yet these
sewerlines would not benefit the industries. Thus, the industries are generally not receptive
to connecting to City of Gastonia Crowders Creek WWTP. The State normally encourages
regionalization. However, the industries are generally compliant with their permit limits
whereas City of Gastonia/Crowders Creek WWTP is not. The State does not normally
encourage a compliant discharger to connect to a noncompliant discharger.
The Crowders Creek wastewater treatment facility consists of a mechanical bar screen, grit
removal, an influent pump station, dual primary clarifiers, dual anoxic/oxic process for
biological phosphorus removal which includes anaerobic basins with mechanical mixers
and aerobic basins with diffused aeration, dual final clarifiers, two polishing/stabilization
ponds, a chlorine contact chamber (gas), SO2 dechlorination, static post aerator, a
dissolved air floatation (DAF) unit, four anaerobic digesters, one gravity sludge thickener
and one filter belt press dewatering unit, alum and caustic addition,
Industries (all SIUs) discharging to Crowders Creek WWTP include:
1. Electroplated Connectors: product - electroplated connectors, flow - 8000 GPD, wwc -
BOD, Cn,.Cd, Cr, Zn, and Ni.
2. City of Kings Mountain: product - textile/domestic, flow - 1,400,000 GPD, wwc -
BOD, TSS, NH3-N, TP, Cu, Zn, and Ni.
3. Rauch Industries.: product - glass and satin ornaments, flow - 13,400 GPD, wwc -
BOD, NH3-N, Ag, Cd, Pb, and Zn.
4. Sunshine Uniform Service, Inc.: product - laundry, water, soaps, flow 44,500_GPD,
wwc - BOD, TSS, NH3-N, TP, Cu, Cd, and Zn. • -
5. Threads USA: product - dyed thread, flow-836,000 GPD, wwc - BOD, TSS, NH3-N,
TP, Cu, Ni, and-Zn,
SIU: Significant Industrial User (Only the SIU dischargers have pretreatment permits)
To be classified as a SIU, an industry must meet one or more of the following conditions:
1) Flow to POTW > 25,000 GPD
2) Flow to POTW > 5% of POTW's Maximum Allowable Headworks Loading (MAHL)
3) Industry is a classified Categorical Industry (CI)
4) Other - an industry may not meet nos. 1-3 listed above, but if there is a concern that the
industry may adversely impact the POTW, it can be classified as a SIU.
Page 1 of 5

NC0074268 Summary
September 1996
November 18, 1996 (revised)
Compliance Summary
The facility is currently under EMC SOC WQ 93-16. The facility has met the requirements
of the SOC to date and recently has been meeting the unadjusted permit limits, even though..
the SOC does not expire until November 30, 1996.
Compliance data was evaluated for the period July 1994 - July 1996 and the violations are
compiled on the following table. The SOC limits are higher than the limits specified in the
permit. The compliance data indicate that Crowders Creek WWTP has been fairly
compliant and has had no violations over the past four months. The facility would have
had a greater number of violations had there been no SOC in place.
Parameter
SOC Limit
Result
Date
(Daily Maximum)
Selenium
50.0 ug/1
52.0 ug/1
9603
Cadmium
4.8 ug/1
5.18 ug/1
9409
Selenium
50.0 ug/1
16.8 ug/1
9409
Cadmium
4.8 ug/1
9.77 ug/1
9408
Selenium
50.0 ug/1
56.4 ug/1
9408
Cadmium
4.8 'ug/1
6.65 ug/1
9407
Selenium
50.0 ug/1
90 ug/1
9407
Crowders Creek WWTP has a Quarterly Chronic Pass/Fail Toxicity test with a 42%
effluent concentration limit. They are under a SOC 8/21/95-11/30/96 and are currently
meeting unrevised metals limits. The SOC requires them to conduct more extensive
toxicity testing in at attempt to quantify the toxicity and identify possible sources of
toxicity. Since 1994, they have conducted toxicity tests using graduated effluent
concentrations (11,21,31,42,61). They failed several toxicity tests during 1993, 1994,
and 1995, but have passed six of their last eight toxicity tests.
As mentioned in the report form Aquatic Toxicology to the Mooresville Regional Office
(MRO), 1/96-3/96, Crowders Creek WWTP met its permit limitation for chronic toxicity
and that "additional testing" could not be conducted until a violation occurs. 4-7/96, facility
in compliance and Gastonia submitted a request for DWQ to rescind EMC WQ 93016. In
TCP Report (8/95), Gastonia suggested that primary cations and anions of effluent salts
were sodium, sulfates, and chlorides. Upon limit effluent characterization testing, the City
targeted metals and surfactants as potential sources of toxicity. To further investigate the
causes of toxicity, the City proposed source identification studies and toxicity treatability
testing. Gastonia has spent considerable time and monies on treatment technologies which
may prove ineffective if toxicants are not effectively reduced by those processes. Aquatic
Tox has stressed the importance of source reduction activities and complete
characterization/ identification of the effluent toxicants. Crowders Creek WWTP's most
recent toxicity self -monitoring data form 6/95-6/96 shows three of eight tests which did not
meet the required chronic permit.limitation of 42 percent. Although three of the past four
toxicity test results show compliance with 42 percent limit, Aquatic Toxicology is not
certain that causative toxicants have been sufficiently identified and reduced/eliminated to
the extent that the City will be able to achieve consistent compliance.
Note: A mathematical round error indicated that the instream waste concentration (IWC)
should be 41 percent instead of 42 percent. Crowders Creek WWTP is still expected to be
in compliance with the new limit (because this is only minor change in the (IWC).
Page 2 of 5

NC0074268 Summary
September 1996
November 18, 1996 (revised)
WLA Summary
Monitoring and limits will remain the same for the majority of parameters in the permit.
Oxygen consuming wastes have generally not been a problem. Lake Wylie continues to
have problems with nutrients and therefore the phased total nitrogen and total phosphorus
limits will remain in the permit. Oil and grease monitoring will be discontinued because
review of DMR data indicated the majority of results were below the detection level for the
analytical method used. Those results above the detection level were below the commonly
used limit of 30.0 mg/l.
A reasonable potential analysis indicated that cadmium, chromium, cyanide, lead, and
selenium will be limited during the forthcoming permit period. Gastonia expressed concern
with meeting metals limits on a consistent basis and they believed that Crowders Creek
WWTP would be less likely to violate metals limits if the NPDES permit had weekly
averages as well as daily maximum values. Thus, the Division agreed to add weekly
averages to the NPDES permit for limited parameters.
As stated in the Instream Assessment SOP, under routine analyses, chemical specific
effluent limits are calculated to protect to the chronic no effect level for aquatic life instream
under 7Q10 conditions. Since most criteria reflect between 4 and 7 consecutive day
exposure period assumptions, a weekly average of daily monitoring basis should protect
against chronic effects. However, as a result of a DEM cost/frequency of monitoring study
conducted in the early.1980's, a procedure was established whereby once/week or
enerall
2/month sampling would be required dependent on facility classification. Thus, y,
chemical specific toxic limits shall be placed in NPDES permits as a maximum daily
allowable concentration in light of this reduced monitoring frequency. Higher daily
maximum concentrations may be allocated if a facility agrees to conduct daily monitoring
(5/week). Gastonia's daily maximum limits will become weekly average limits since as
stated above these existing limits already protect against chronic effects. A new daily
maximum limit (to protect against acute effects) is equal to one-half of the toxicant's CMC
(or FAV) value. CMC values are listed the EPA federal criteria spreadsheet.
Parameter
1/2 FAV
Daily Max
Wkly Avg
Value (ug/l)
(ug/l)
ug/l
Cadmium
5.0 (a)
12.2
4.9
Chromium
984.3
2395 (b)
121.5
Cyanide
22
53.5
12.2
Lead
33.8
82.2
60.8
Mercury (c)
2.4 (d)
5.8 (e)
0.029
Selenium
20.0
48.7
12.2
(a) EPA federal criteria = 1.79 ug/l, but 5.0 ug/1 should be used per PB investigation.
Note: Footnote (a) CMC value presented above are at water hardness equal to 50 mg/land
are different from those in the EPA federal criteria spreadsheet.
(b) A violation of the daily maximum for chromium would cause a violation of the weekly
average, thus, the daily maximum is calculated by multiplying the weekly average by five
and subtracting the weekly average limit from this value, (5*121.5) - 121.5 = 486 ug/1.
(c) See following page for explanation of mercury monitoring and limits.
(d) Value is for mercury (II). There is no CMC/FAV for methylmercury, for which data
indicate higher toxicity than mercury (II). �,A
(e) A violation of the daily maximum for c 4 tum.uld cause a violation of the weekly
average, thus, the daily maximum is calculated by multiplying the weekly average by five -
and subtracting the weekly average limit from this value, (5*0.029) - 0.029 = 0.116 ug/l.
Page 3 of-5

NC0074268 Summary
September 1996
November 18, 1996 (revised)
Copper, nickel, silver, and zinc monitoring are required in the pretreatment LTMP and
monitoring for these three parameters will not be required in the NPDES permit.
Review of pretreatment allocation table for Crowders Creek WWTP indicated that none of
the facilities is expected to discharge mercury, although mercury monitoring is required as
part of the Long Term Monitoring Plan (LTMP). Review of LTMP data for the period
1/94-6/95 indicated three detections: 0.25 ug/1 (4/29/94), 0.60 ug/1 (7/22/94), and 2.2 ug/1
(8/26/94). All three detections were greater than the allowable concentration of 0.029 ug/l.
There is uncertainty associated with mercury analyses. Most laboratories have quantitation
limits greater than the water quality standard. Quantitation limits are normally 0.2 ug/1
whereas the water quality standard is 0.012 ug/1. In addition, when analyzing for very low
concentrations of contaminants, there is a significant potential for outside contamination of
samples generating incorrect results. However, even with this uncertainty, because there
were three detections over the water quality standard, mercury will be limited in the
proposed NPDES permit. (See table on previous page for limits)
APAM data review is summarized below:
Parameter
5/94 (ug/1)
1/95 (ug/1)
Aluminum
<40
540
Antimony
22.8
79
Arsenic
3.0
29
Beryllium
<5
7
Cadmium
9.1
22
Chromium
26.0
2.9
Copper
42.0
31
Lead
40.0
nd
Nickel
39.0
24
Selenium
94.2
26
Silver
4.2
24
Zinc
66.5
36
Barium
7.8
<500
Chloride
489,900 -
429,900
Cyanide
5.0
2
Fluoride
1270
1100
Chloroform
6
<5
Toluene
16
nd
Undecane '
5
nd
Di-n-butyl phthalate
<50 __24
ND=not detected (no detection limit)
nd=no data
Many of the pollutants detected in the APAM are already monitored (and some limited) in
the NPDES permit. Other parameters detected in the APAM were examined on a case -by -
case basis to determine if monitoring would be required in the NPDES permit. Monitoring
for undecane will not be required because the concentration is an estimate. Monitoring for
Di-n-butyl phthalate will not be required because this compound is a suspected laboratory
contaminant. Aluminum monitoring will not be required because it does not have a water -
quality standard and is almost ubiquitous in the environment.
Page 4 of 5

NC0074268 . Summary
September 1996
November 18, 1996 (revised)
Parameter
Detected Cone .
WQ'S.td or Fed Crit.
Standard Type
Antimony (ug/1)
10, 79
14/4300
W&OC/OC
Arsenic (ug/1)
3.0, 29
50
Aquatic Life
Beryllium (ng/1)
7000
117/6.8
Human Health/WS
Barium (ug/1)
7.8 -
1000
Water Supply
Chloride (mg/1)
490, 430
230 AL/ 250
Aq. Life/WS
Fluoride (mg/l)
1.27, 1.1
1.8
Aq. Life
Toluene (ug/1)
.16
11.0,
Aq. Life
Monitoring will not be required for those compounds in the table above that have standards
or federal criteria that are human health based or are only applicable to water supply
classified waters (beryllium, barium) because Crowders Creek is a Class C stream.
Therefore, monitoring will not -be required for beryllium or barium. Antimony monitoring
will not required because the detected concentrations are less than the applicable federal
criterion (4300 ug/1 is applicable, 14 ug/1 is not). Arsenic monitoring will not required
because the concentration detected is less than the water quality standard. Chloride
monitoring will not required because the concentrations detected are greater than a water
supply standard and an action level. Water treatment facilities add fluoride to the water.
Fluoride concentrations in potable drinking water are similar to the concentrations in the
above table. Fluoride monitoring will not be required. Toluene was detected at a
concentration above the water quality standard and monitoring (but no limit) will be
required in the proposed NPDES permit.
Instream Monitoring ___ _
Crowders Creek WWTP has one upstream monitoring station and two down ;cream
monitoring stations at NCSR 2424 and NCSR 564. Instream data were. examined from _
January 1994 thorough July 1996. The data summaries below refer to monthly averages.
- Dissolved oxygen concentrations did not demonstrate a consistent pattern instream.
About 50 percent of the time, DO values become progressively lower with distances
downstream. About 30 percent of the time, DO values dropped and then recovered by the
most downstream station. DO values remained constant in a few instances.
= pH values and BOD concentrations remained generally constant at all three stations.
- Fecal coliform values ranged from 63/100.ml (NCSR564-most downstream location) to
1664/100 ml (upstream) and were lower down- than upstream almost 50 % of the time.
- Conductivity values were often higher at NCSR 2424, but then decreased at NCSR 564
indicating that the stream appears to be recovering from the discharge of wastewater
containing metals and ions into the receiving water.
- The majority of the ammonia -nitrogen values were below 0.10 mg/I at the upstream
station,. although -the -highest values measured during the -monitoring period (11.0 mg/1) also
occurred at the upstream station. Ammonia nitrogen concentrations, generally increased at
NCSR 2424, but then decreased (but no.t to upstream concentrations) at NCSR 564. It
appears the stream receives some impact from ammonia -nitrogen additions, but recovers
downstream. In addition, it should be noted that none of the ammonia -nitrogen values
were very high with the exception of the one 11.0 mg/1 value at the upstream station.
Instream data indicate the Crowders Creek WWTP is' not having an adverse impact on the
receiving water quality. DO is a good indicator of the general health of the stream and DO
monitoring will continue. pH, BOD, and fecal coliform monitoring do not provide any
useful information and thus monitoring for these three parameters will be discontinued.
Crowders Creek WWTP discharges metal sand ions and thus conductivity monitoring will
also continue and instream monitoring for ammonia -nitrogen will be changed to total
nitrogen to provide a greater amount of information on nutrients associated with nitrogen.
Page 5 of 5

SOC PRIORITY PROJECT: Yes_No X
If Yes, SOC No. EMC WQ 93-16
To: Permits and Engineering Unit
Water Quality Section
Attention: Jeanette Powell
Date: April 25, 1996
NPDES STAFF REPORT AND RECOMMENDATION
County: Gaston
Permit No. NC0074268
PART I - GENERAL INFORMATION
1. Facility and Address: Crowders Creek WWTP
City of Gastonia
PO Box 1748
Gastonia, NC 28053
2. Date of Investigation: April 25, 1996
3. Report Prepared By: Todd St. John
4. Persons Contacted and Telephone Number: Mr. Earl C. Beach [phone]
5. Directions to Site: This Facility is located approximately 3/4 mile north of the North
Carolina/South Carolina border on the west side of Highway 321.
6. Discharge Point(s). List for all discharge points:
Latitude: 35° 10' 10" Longitude: 81° 11' 46"
Attach a U.S.G.S. map extract and indicate treatment facility site and discharge point on map.
U.S.G.S. Quad No.: G14NW U.S.G.S. Name: Gastonia South, NC -SC
7. Site size and expansion are consistent with application?
Yes X No_ If No, explain:
8. Topography (relationship to flood plain included): The site is flat to moderately sloping. The
facilities do not appear to be located within the 100 year flood plain.

9. Location of nearest dwelling: None with 500 feet.
10. Receiving stream or affected surface waters: C: owders Creeks
a. Classification: C
b. River Basin and Subbasin No.: 030837
c. Describe receiving stream features and pertinent downstream uses: Receiving stream
is approximately 40 feet across with a mud/sand bottom. General Class C uses
downstream.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted: 6.0 MGD (Ultimate Design Capacity)
b. What is the current permitted capacity of the wastewater treatment facility? 6.0 MGD
c. Actual treatment capacity of the current facility (current design capacity)? 6.0 MGD
d. Date(s) and construction activities allowed by previous Authorizations to Construct
issued in the previous two years: N/A
e. Please provide a description of existing or substantially constructed wastewater
treatment facilities: The facilities consist of a mechanical bar screen, grit removal, an
influent pump station, dual primary clarifiers, dual anoxic/oxic basins, dual final
clarifiers, two polishing ponds, a chlorine contact chamber (gas), SO2 dechlorination,
a static post aerator, a DAF unit, four anaerobic digesters, one gravity sludge
thickener, and one filter belt press dewatering unit, alum and caustic addition.
f. Please provide a description of proposed wastewater treatment facilities: N/A
Possible toxic impacts to surface waters: This facility serves several industries which
may have toxic discharges including heavy metals.
g.
h. Pretreatment Program (POTWs only): Yes
in development:
should be required:
approved: X
not needed:
2. Residuals handling and utilization/disposal scheme:
Page 2

a. If residuals are being land applied, please specify DEM permit no.: WQ0001793
Residuals Contractor: Amsco
Telephone No.: [phone]
b. Residuals stabilization: PSRP
c. Landfill: N/A
d. Other disposal/utilization scheme (specify): N/A
3. Treatment plant classification (attach completed rating sheet): Grade IV - Classification has
not changed.
4. SIC Code(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: 01 Secondary:
Main Treatment Unit Code: 01303
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds or are any public monies
involved (municipals only)? N/A
2. Special monitoring or limitations (including toxicity) requests: None
3. Important SOC, JOC or Compliance Schedule dates: (please indicate)
Date
Submission of Plans and Specifications N/A
Begin Construction N/A
Complete Construction N/A
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: N/A
Connection to Regional Sewer System: N/A
Page 3

•
Subsurface: �N/A
Other Disposal Options: N/A
5. Other Special Items: None
PART IV - EVALUATION AND RECOMMENDATIONS
The city of Gastonia has applied for renewal of NPDES permit for Crowders Creek WWTP.
This facility is currently operating under SOC EMC WQ 93-16. The facility has met the requirements
of the SOC to date and recently has been meeting the unadjusted permit limits (not required until
November 30, 1996). However, more time will be needed to determine if the SOC is no longer
needed.
This facility appears to be well maintained and run. Therefore, this Office recommends that
the NPDES permit be renewed.
�I/I1 1 1
Signature of Report Preparer
/!
f� -1 1,
Water Quality',Regional Supervisor
Date
7
Page 4

Gastonia Crowders Crk WWTP
Facility Name =
City of Gastonia/Crowders Creek
Parameter =
Cadmium
Parameter =
Cyanide
NPDES # =
NC0074268
Standard =
2
141/1
Standard =
5
µgll
Qw (MGD) =
6
w tz
8
/
7Q10s (cfs)=
13.31
n
BDL=1/2DL
Actual Data
RESULTS
n
BDL=1/2DL
Actual Data
RESULTS
IWC (%) =
41.15
9607
1
<2
9607
2.5
<5
9606
_ 1
<2
Std Dev.
3.518906505
9606
2.5
<5
Std Dev. -
2.351
FINAL RESULTS
9605
1
<2
Mean
3.250666667
9605
2.5
<5
Mean
3.197
Cadmium
9604 1
<2
C.V.
1.082518408
9604
2.5
<5
C.V.
0.735
Max. Pred Cw
45.87
9603 1
<2
9603
2.5
<5
Allowable Cw
4.9
9602 1
<2
9602
2.5
<5
Cyanide
9601 1
<2
Mutt Factor=
3
9601
2.5
<5
Mutt Factor=
2.4
Max. Pred Cw 32.808
9512 1
<2
Max. Value
15.29
µ9/l
9512
2.5
<5
Max. Value
13.67
µg/I
Allowable Cw 12.2
9511 1
- 2 Max. Pred Cw
45.87
µg/1
9511
2.5
<5
Max. Pred Cw
32.81
µg/I
Chromium
9510 1
-.' Alloraable Cw
4.9
µg 1
9510
2.5
<5
Allowable Cw
12.2lµg/I
Max. Pred Cw
300.2
9509
_ 1
1;
...2
<2
9509
2.5
<5
Allowable Cw
121.5
9508
9508
6.25
6.25
Copper
9507
1 <2
9507
2.5
<5
Max. Pred Cw
99
9506
1 <2
9506
8.5
8.5
Allowable Cw
17.0
9505
1
<2
6.4
9505
2.5
<5
9504
6.4
9504
2.5
<5
Lead
9503
2.42 2.42
9503
2.5
<5
Max. Pred Cw
148.4
9502
1 <2
9502
13.67
13.67
Allowable Cw
60.8
9501
1 <2
9501
2.5
<5
Selenium
9412
2.74' 2.74
9412
2.5
<5
Max. Pred Cw
144
9411
2.18 2.18
9411
2.5
<5
Allowable Cw
12.2
9410
2.8 2.8
9410
2.5
<5
9409
5.18 5.18
I
9409
2.5
<5
Nickel
9408
9.77 9.77'
'
9408
2.5
<5
Max. Pred Cw
198
9407
6.65 6.65
9407
2.5
<5
Allowable Cw
213.8
9406
6.51
6.51
9406
2.5
<5
9405
15.29
15.29
9405
2.5
<5
Silver
9404
7.01
7 Cl
9404
2.5
<5
Max. Pred Cw
35.1
9403
8.07
8.07
9403
2.5
<5
Allowable Cw
0.1
9402
6
6
9402
2.5
<5
9401
0.5
<1
9401
2.5
<5
Zinc
32
32
Max. Pred Cw
149.8
33
33
Allowable Cw! 121.5
34
34
(.."4 o01,4
f II CcE �`928+ ,3 `STi
a e ,f
th -t. ., ,twat_ 5
„a/J-1_
+LL.3), c, i.e.
zx - /P,,R 0)//i (C•tiv.„,.)
"X 3 -- Z �f f;(9 (CGI�m,,,,�)
v
• C �33.3'
z =cam a (mod)
(44-4t,t)

Gastonia - Crowders Crk WWTP
'arameter =
Standard =
Chromium
50
µ9/I
Parameter=
Copper
Parameter =
Lead
Standard =
7
µg/I
Standard =
25
µ9/l
n
9607
BDL=1/2DL Actual Data RESULTS
2.3
2.3
9606
9605
9604
9603
9602
9601
9512
9511
9510
9509
9508
9507
9506
9505
9504
9503
9502
9501
9412
9411
9410
9409
9408
9407
9406
9405
9404
9403
9402
9401
32
33
34
4.3
2.2
3.5
7
5
2
3.8
2
4.3
4
5.4
6.8
7.2
5.8
3.4
27.7
7.4
4.6
12.2
9.2
4.2
2.2
10.2
14
79
10.1
13
7
11
10
4.3
2.2
3.5
7
5
2
3.8
2
4.3
4
5.4
6.8
7.2
5.8
3.4
27.7
7.4
4.6
12.2
9.2
4.2
2.2
10.2
14
79
10.1
13
7
11
10
Std Dev.
Mean
C.V.
Mult Factor =
Max. Value
Max. Pred Cw
Allowable Cw
14.0759
9.61667
1.46369
3.8
79
300.2
121.5
µWIROJO
µWI
n BDL=1/2DL Actual Data
9607 18.5 18.5
9606 11.5
9605 10
9604 17.5
9603 20.5
9602 13
9601 17.5
9512 11
9511 13
9510 17
9509 32.5
9508 15.5
9507 23
9506 24
9505 24
9504 23.8
9503 33
9502 13
9501 16.2
9412 17.8
9411 20.4
9410 25.6
9409 19.2
9408 41.7
9407 45
9406 36
9405 36.9
9404
9403
9402
9401
32
33
34
55
33
40
35
11.5
10
17.5
20.5
13
17.5
11
13
17
32.5
15.5
23
24
24
23.8
33
13
16.2
17.8
20.4
25.6
19.2
41.7
45
36
36.9
55
33
40
35
RESULTS
Std Dev.
Mean
C.V.
Max. Value
Max. Pred Cw
Allowable Cw
11.541
24.72
0.4669
55
99
17.0
n
9607
9606
9605
9604
9603
9602
9601
9512
9511
9510
9509
9508
9507
9506
9505
9504
9503
9502
9501
9412
9411
9410
9409
9408
9407
9406
9405
9404
9403
9402
9401
32
33
34
BDL=1/2DL
1
2.3
1
1
1
1
1
5
12
5
5
10
13.8
5
10.3
5
10.5
5
14.6
16.8
39.3
8.4
28.1
33
53
21
41.7
11
16
38
1
Actual Data
<2
RESULTS
':atz
2.3 StdiDev.
<2 Me'aq'd
<2
<2
<2
<2
<10
12
<10
<10
10
13.8
<10
10.3
<10
10.5
<10
14.6
16.8
39.3
8.4
28.1
33
53
21
41.7
11
16
38
<2
Mult`Factor =
Maz,Value
MaiPred Cw
Allowable Cw
}
'x3r
14.201
13.86
1.0246
2.8
53
148.4
60.8
PAGE 1

Gastonia - Crowders Crk WWTP
Parameter= Nickel
Standard = 88
µg/I
ii.parameter
Standard =
Silver
0.06
n
9607
9606
9605
9604
9603
9602
9601
9512
9511
9510
9509
9508
9508
9506
9505
9504
9503
9502
9501
9412
9411
9410
9409
9408
9407
9406
9405
9404
9403
9402
9401
32
33
34
BDL=1/2DL
5
15.5
17
10.3
12.3
13.2
45
5
10.6
17.3
18.8
16.4
22.5
27.6
46.5
15.8
29.2
18.7
5
20.4
27.5
21.9
27
56.7
68
43
55.1
52
45
46
90
Actual Data
<10
15.5
17
10.3
12.3
13.2
RESULTS
Std Dev.
Mean
C.V.
45 MultFactor=
<10 Max. Value
10.6 Max. Pred Cw
17.3 Allowable Cw
18.8
16.4
22.5
27.6
46.5
15.8
29.2
18.7
<10
20.4
27.5
21.9
27
56.7
68
43
55.1
52
45
46
90
20.379
29.977
0.6798
2.2
90
198
213.8
n
9607
9606
9605
9604
9603
9602
9601
9512
9511
9510
9509
9508
9507
9506
9505
9504
9503
9502
9501
9412
9411
9410
9409
9408
9407
9406
9405
9404
9403
9402
9401
32
34
BDL=1/2DL
2
2
2
2
2
2
2
2
2
2
2
2
2
2
5.3
13.5
2
2
2
2
2
2
3.6
4.7
5
1.5
6.3
1.5
1.5
1.5
1.5
Actual Data
<4
<4
<4
<4
<4
<4
RESULTS
Std Dev.
Mean
C.V.
<4 Mult Factor=
<4 Max. Value
<4 Max. Pred Cw
<4 Allowable Cw
<4
<4
<4
<4
5.3
13.5
<4
<4
<4
<4
<4
<4
3.6
4.7
5
<3
6.3
<3
<3
<3
<3
2.3685
2.7967
0.8469
2.6
13.5
35.1
0.1
PAGE 1

Parameter =
Standard =
n
9607
9606
9605
9604
9603
9602
9601
9512
9511
9510
9509
9508
9507
9506
9505
9504
9503
9502
9501
9412
9411
9410
9409
9408
9407
9406
9405
9404
9403
9402
9401
32
33
34
Zinc
50
BDL=1/2DL
94
82
49
42.5
68
45.5
44
53
52
53
53.5
33.5
53.5
69
47.8
38
46
63.6
56.4
51.1
48.7
68.3
100.7
81.4
89
82
75.5
97
98
78
107
µ0
Actual Data
94
RESULTS
82 Std Dev.
49 Mean
42.5 C.V.
68
45.5
44 Mult Factor =
53 Max. Value
52 Max. Pred Cw
53 Allowable Cw
53.5
33.5
53.5
69
47.8
38
46
63.6
56.4
51.1
48.7
68.3
100.7
81.4
89
82
75.5
97
98
78
107
Gastonia - Crowders Crk WWTP
20.418
64.233
0.3179
1.4
107
149.8
121.5
n
9607
9606
9605
9604
9603
9602
9601
9512
9511
9510
9509
9508
9507
9506
9505
9504
9503
9502
9501
9412
9411
9410
9409
9408
9407
9406
Selenium
5
BDL=1/2DL
2.5
22.8
2.5
2.5
52
2.5
2.5
2.5
2.5
5.3
14
2.5
5.3
5.4
7
10.3
2.5
2.5
2.5
2.5
2.2
3.5
16.8
56.4
90
39
9405 nd
9404 23.05
9403 2.5
9402 5.06
9401 15
32
33
34
µgn
Actual Data
<5
22.8
<5
<5
52
<5
<5
<5
<5
5.3
14
<5
5.3
5.4
7
10.3
<5
<5
<5
<5
2.2
3.5
16.8
56.4
90
39
nd
23.05
<5
5.06
15
RESULTS
Std Dev.
Mean
C.V.
Mult Factor =
Max. Value
Max. Pred Cw
Allowable Cw
3092.1
8373.9
0.3693
1.6
90 µg/I
144 µg/I
12.2 µg/I
PAGE 1

C 70/0/i D,-1Vc (Co (2Yc&7L
Creek ' Parameter = Cadmium
Parameter = Chromium
Facility Name =
Cyr of Gastonia/Crowders
Standard =
2 pg/I
Gastonia-Crowders Crk WWTP Standard =
50 pg/I
NPDES # =
NC0074268
Qw (MGD) =
6
Actual Data
RESULTS
7010s (cfs)=
13.3
n
BDL=1/2DL
Actual Data
RESULTS
n
BDL=1/2DL
Std Dev.
1.99745847
/WC (%) =
41.15
960307
1
<2
Std Dev.
0.233295318
960307
7
Mean
3.16981132
960314
1
<2
Mean
1.056603774
960314
6
C.V.
0.63015059
Cadmium
FINAL RESULTS
960321
960328
1
1
<2
<2
C.V.
n=53
0.220797354
960321
960328
960403
7
8
4
n=53
Max. Pred Cw
2.4
960403
1
<2
2
Mult Factor =
1.2
960411
3
MultFactor =
1.7
Allowable Cw
Chromium
Max. Pred Cw
Allowable Cw
Lead
Max. Pred Cw
Allowable Cw
Mercury
Max. Pred Cw
Allowable Cw
4.9
15.3
121.5
10.8
60.8
0.12
0.029
960411
960418
960425
960502
960509
960516
960522
960523
960530
960606
2
1
1
1
1
1
1
1
1
1
<2
<2
<2
<2
<2
<2
<2
<2
<2
Max. Value
Max. Pred Cw
Allowable Cw
2
2.4
4.9
141 960418
pg/I 960425
pg/I - 960502
960509
960516
960522
960523
960530
960606
3
4
1
2
4
2
2
2
2
_
Max. Value
Max. Pred Ci
Allowable Cnn
9
15.3
121.5
pg/I
pg/I
pg/I
960613
960620
960627
960704
960711
2
1
1
1
1
2
<2
<2
<2
<2
960613
960620
960627
960704
960711
2
4
9
1
1
960718
960725
1
1
<2
<2
960718
__ 960725
2
-
960801
960808
960815
960822
960829
960905
960912
960919
1
1
1
1
1
1
1
1
<2
<2
<2
<2
<2
<2
<2
<2
-
_ 960801
960808
960815
960822
960829
960905
960912
960919
1
2
6
3
2
3
2
4
960926
961003
1
1
<2
<2
960926
961003
961010
961017
1
1
<2
<2
961010
961017
3
961024
1
<2
961024
3
961031
961107
1
2
<2
2
- - -_
961031
961107
1
1
1
961114
1
<2
961114
961121
1
<2
961121
961126
961205
961212
1
1
1
<2
<2
<2
961126
. 961205
961212
2
4
961219
1
<2
961219
961226
970102
970109
970116
970123
970130
1
1
1
1
1
<2
<2
<2
<2
1 ' <2
<2
961226
970102
970109
970116
970123
970130970206
4
1
2
6
- - -
_---
7
6
970213
970220
1 <2
1 <2
970206
970213
970220
2
3
2
970227
1 <2
970227
EAzo uj&&.E" pa l�,vZ/A L. ,44 4G ySL5 Caxi®vc7&--1D u,1 A9as7C E-L?-
fe 57o.vi.4 "b,47A --$11015Efatt. kII-6;v 7- 113GLE744,1 .3A/4P6«J6- 7-Ecb+Aii ayes.
PAGE 1

Lead
Mercury
Parameter =
Standard =
n
960307
960314
_ 960321
960328
960403
960411
960418
960425
960502
960509
960516
960522
960523
960530
960606
960613
960620
960627
960704
960711
960718
960725
960801
960808
960815
960822
960829
960905
960912
960919
960926
961003
961010
961017
961024
961031
961107
961114
961121
961126
961205
961212
961219
961226
970102
970109
970116
970123
970130
970206
970213
970220
970227
25
BDL=1/2DL
1
1
1
1
1
1
1
1
1
1
2.1
1
1
1
1
4
2
1
1
1
1
1
Ngn
Actual Data
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
2.1
<2
<2
_ -- <2
1
1
1
2
1
2
3
4
2
6
3
5
4
1
1
1
1
1
1
2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
2
<2
<2
<2
2
-- 2
<2
<2
1
4
. 4
3
4
2
6
3
5
4
<2
<2
<2
<2
<2
<2
<2
4
4
RESULTS
Std Dev.
Mean
C.V.
n=53
Mult Factor=
Max. Value
Max. Pred Cw
Allowable Cw
Gastonia
1.2245
1.6623
0.7366
1.8
6
10.8
60.8
-Cr r f e tTP
n
970401
970410
970417
970424
970501
970508
pg/I 970515
pg/I 970523
Ng/I 970529
970605
970612
970619
970626
0.012 pg/I
BDL=1/2DL Actual Data
0.1 <0.2
0.1 <0.2
0.1 <0.2
0.1 <0.2
0.1 <0.2
0.1 <0.2
0.1 <0.2
0.1 _<0.2
0.1 _ <0.2
0.1 <0.2
0.1 <0.2
0.1 <0.2
0.1 <0.2
RESULTS
Std Dev.
Mean
C.V. _
n=13
Mult Factor=
Max. Value
Max. Pred Cw
Allowable Cw
2E-09
0.1
2E-08
1.2
0.1
0.12
0.029
Ng/I
Vg/I
vg/I
PAGE 1

Gastonia - Long Crk WWTP 8.0MGD to Long Creek
Facility Name =
City of Gastonia/Long Creek
NC0020184
WWT Parameter = IFCadmium
NPDES # =
Standard = I
2jpg/I
Ow (MGD) =
8
7010s (cis)",
3
n BOL=1/2DL Actual Data RESULTS
IWC (%) =
80.52
960307
1
<2 Std Dev.
0.384760495
960314
1
<2 Mean
1.075471698
FINAL RESULTS
960321
1
<2 C.V.
0.357759759
Cadmium
960328
1
<2 n=53
Max. Pred Cw 4.2
960403
1
<2
Allowable Cw 2.5
960411
3
3 Mult Factor.'
1.41
Lead
960418
1
<2 Max. Value
3 Ng/I
Max. Pred Cw 10.2
960425
1
<2 Max. Pred Cw
4.2 pg/1
Allowable Cw 31.0
960502
1
<2 Allowable Cw
2.5;pg/l
Mercury
960509
1
<2
Max. Pred Cw 2.2
960516
1
<2
Allowable Cw 0.015
960522
1
<2
960523
1
<2
960530
1
<2
960606
1
<2
960613
1
<2
960620
1
<2
960627
1,
<2
960704
1
<2
960711
1
<2
960718
1
<2
960725
1
<2
960801
1
<2
960808
1
<2
960815
1
<2
960822
1'
<2
960829
1
<2
960905
1
<2
960912
1
<2
960919
1
<2
960926
1
<2
961003
1
<2
961010
1
<2
961017
1
<2
961024
1
<2
961031
1
<2
961107
3
3
961114
1
<2
961121
1
<2
961126
1
<2
961205
1
<2 i
961212
1
<2
961219
1
<2
961226
1
<2
970102
1
<2
970109
1
<2
970116
1
<2
970123
1
<2
970130
1
<2 '
970206
1
<2
970213
1
<2
970220
1
<2
970227
1
<2
PAGE 1

Gastonia - Long Crk WWTP 8.0MGD to Long Creek
Parameter
Lead
Parameter =
Mercury
Standard
25
Yg/I
1
n BDL=1/2DL ;Actual Data' RESULTS
Standard =
0.012
N9/I
n BDL=1/2DL Actual Data RESULTS
960307 1 <2' Std Dev. 0.9556 960307 0.4 Std Dev. , 0.1324
960314 2 2 Mean 1.4943. 960314, 0.1 Mean 0.1302
960321 1 <2!0.V. 0.6395: 960321 .0.1 IC.V. 1.0171.
960328
1 <2'n=53
960403
1. <2
960411' 1 <2, Mult Factor= 1 1.7
960418 1 <2,Max. Value ! 6'pg/I
960425 1' <2'Max. Pred Cw 10.2!pg/I
960328 0.1 1n=53
960403; 0.2i
960411 ; 1, ' Mult Factor = 2.21
960418 0.2, 'Max. Value 1 Ipg/I
960425, 0.11 Max. Pred Cw' 2.2''Ig
960502 1 <2 Allowable Cw . 31.0l pg/1 960502, 0.11 Allowable Cw 0.015, pg/1
960509 1' <2' 960509 0.11
960516
1 <2
960522
1 <2
960523
1 <2
960530
1 <2'
960606
3 3
960613
1 <2
960620
6 6
960627
1 <2
960704
2 2
960711 1
960718
1 <2'
960516. .0.11
960522 0.1
960523 0.1'
960530, 0.1
960606' 0.1
960613 0.1
960620 0.1,
9606271 0.1'
960704 0.11
960711, 0.1
960718' 0.1
960725 1 <2 960725' 0.1
960801 1; <2, 960801' 0.11
960808 2 2' 1 960808' 0.1,{
960815 1' <2 960815' 0.3'
960822 1 <2 960822, 0.1
960829 1. <2. 960829. 0.1
960905 1, <2' 960905! 0.1
960912, 2 2' 960912i 0.1
960919, 3 3' 9609191 0.1
960926 1 <2 960926' 0.1
961003 1 <2, 961003: 0.1
961010 1 <2' 961010, 0.1
961017 1 <2 961017' 0.1
961024 1 <2' 961024: 0.1
961031, 1 <2. 961031' 0.1
961107, 1 <2 961107
961114' 2 2 961114'.
961121 3 3 9611211
961126 3 3 961126
0.1
0.1
0.1
0.1
961205 3 3i I 961205: 0.1
961212 2 2: 961212 0.1
961219 1• <2 961219, 0.1
961226 3' 3, ( 961226' 0.1
970102 2.2 2.2 970102 0.1
970109 1: <2, 970109 0.1
970116 1 <2, 970116, 0.1
970123 1; <21 1 970123' 0.1
970130 1'. <2' 9701301 0.1
970206 3 3; 970206' 0.1
970213 1: <2' 970213, 0.1
970220 1, <2 970220, 0.1
970227 1! <2 i 9702271 0.1
PAGE 1

Gastonia - Long Crk WWTP 8.0MGD to South Fork
Facility Name =
City of Gastonia/Long Creek WWT Parameter =
Cadmium
NPDES # =
NC0020184 Standard =
2rg/I
Qw(MGD)=
8
7010s (cfs)=
109
n
BDL=1/2DL Actual Data RESULTS
/WC (%) =
10.21
960307
1
<2 Std Dev.
0.384760495
960314
1
<2 Mean
1.075471698
FINAL RESULTS
960321
1
<2 C.V.
0.357759759
Cadmium
960328
1
<2 n=53
Max. Pred Cw 4.2
960403
1
<2
Allowable Cw 19.6
960411
3
3 Mult Factor =!
1.4
Lead
960418
1
<2 Max. Value
3;Ng/l
Max. Pred Cw 10.2
960425
1
<2 Max. Pred Cw
4.2.Ng/I
Allowable Cw 244.8
960502
1
<2 Allowable Cw
19.6 Ng/I
Mercury
960509
1,
<2
Max. Pred Cw 2.2
960516,
1:
<2
Allowable Cw 0.117
960522
1
<2
960523
1,
<2
960530
1
<2
960606
1''
<2
960613
1
<2
960620
1
<2
960627
1
<2
960704
1
<2
960711
1,
<2
960718
1
<2
960725
1
<2
960801
1
<2
960808
1
<2
960815
1
<2
960822
1
<2
960829
1
<2
960905
1
<2
960912
1
<2
960919
1
<2
960926'
1,
<2
961003
1
<2
961010
1
<2
961017
t
<2
961024
1
<2
961031
1
<2
961107
3
3
961114
1
<2
961121
1
<2
961126
1
<2
961205
1
<2
961212
1
<2
961219
1
<2
961226
1
<2
970102
1
<2
970109
1
<2
970116
1
<2
970123
1
<2
970130
1
<2
970206
1
<2
970213
1
<2
970220
1
<2
970227
1
PAGE 1

Gastonia - Long Crk \NWTP 8.0MGD to South Fork
Parameter =
Lead
Parameter =
Mercury
Standard =
25
pg/1
Standard =
0.012
Ng/
n BDL=1/2DL Actual Data RESULTS
n BDL=1/2DL
Actual Data RESULTS
960307
1
<2 Std Dev.
0.9556
9601111i6.-:.. - 0.4
Std Dev.
0.1324
960314
2
2 Mean
1.4943
960314 0.1
Mean
0.1302
960321
1
<2 C.V.
0.6395
_
960321 0.1
C.V.
1.0171
960328
1
<2 n=53
960328 0.1
n=53
960403
1
<2
960403 0.2
960411
1
<2, Mu/t Factor =
1.7
960411 1
Mult Factor = I
2.21
960418
1
<2 Max. Value
6 pg/I
960418 0.2
Max. Value
1 NgA
960425
1
<2 Max. Pred Cw
10.2 pg/1
960425 0.1
Max. Pred Cw
2.2 pgA
960502
1
<2 Allowable Cw
244.8 pg/1
960502 0.1
Allowable Cw
0.117, Ng/1
960509
1
<2
960509 0.1
960516
1
<2
960516 0.1
960522
1
<2
960522 0.1
960523
1
<2
960523 0.1.
960530
1
<2
960530 0.1
960606
3
3
960606 0.1
960613
1
<2
960613 0.1
960620
6
6
960620 0.1
960627
1
<2
960627 0.1
960704
2
2
960704 0.1
960711
1
<2
960711 0.1
960718
1
<2
960718 0.1
960725
1
<2
960725 0.1
960801
1
<2
960801 0.1
960808
2
2
960808 0.1
960815
1
<2
960815 0.3
960822
1
<2
960822 0.1
960829
1
<2
960829 0.1
960905
1
<2
960905 0.1
960912
2
2
960912 0.1
960919
3
3
960919 0.1
960926
1
<2
960926 0.1
961003
1
<2
961003 0.1
961010
1
<2
961010 0.1
961017
1
<2
961017 0.1
961024
1
<2
961024 0.1
961031
1
<2
961031 0.1
961107
1
<2
961107, 0.1
961114
2
2
961114 0.1
961121
3
3
961121, 0.1
961126
3
3
961126 0.1
961205
3
3
961205 0.1
961212
2
2
961212 0.1
961219
1
<2
961219 0.1
961226
3
3
{
961226 0.1
970102
2.2
2.2
970102 0.1
970109
1
<2
970109 0.1
970116
1
<2,
970116 0.1
970123
1
<2
970123 0.1
970130
1
<2
970130 0.1
970206
3
3
970206 0.1
970213
1
<2
970213 0.1
970220
1
<2
970220 0.1
970227
1
<2
970227 0.1
PAGE 1

Gastonia - Long Crk VW TP 16.0MGD to South Fork
cacility Name =
City of Gastonia/Long Creek WWT Parameter=
Cadmium
NPDES # =
NC0020184 Standard =
2
pg/I
Ow(MGD)=
16
7010s (cfs)=
109
n
BDL=1/2DL Actual Data RESULTS
IWC (%) =
18.54
960307
1
<2 Std Dev. 0.384760495
960314
1
<2 Mean 1.075471698
FINAL RESULTS
960321
1
<2 C.V. 0.357759759
Cadmium
960328
1
<2 n=53
Max. Pred Cw
4.2
960403
1
<2
Allowable Cw
10.8
960411
3
3 Mult Factor .1 1.41
Lead
960418
1
<2 Max. Value 3111g/l
Max. Pred Cw
10.2
960425
1.
<2 Max. Pred Cw 4.2ipg/I
Allowable Cw
134.9
960502
1
<2 Allowable Cw 10.8, pg/I
Mercury
960509
1
<2
Max. Pred Cw
2.2
960516
1
<2
Allowable Cw
0.065
960522
1.
<2
960523
1
<2
960530
1.
<2
960606
1
<2
960613
1
<2
960620
1
<2
960627
1
<2
960704
1
<2
960711
1,
<2
960718
1
<2
960725
1
<2
960801
1.
<2
960808
1
<2
960815
1
<2
960822
1
<2
960829
1'
<2
960905
1
<2
960912
1'
<2
960919
. 1
<2
960926
1.
<2
961003
1
<2
961010
11
<2
961017
1'
<2
961024
1'
<2
961031
1
<2
961107
3'
3
961114
1'
<2
961121
1
<2
961126
1
<2
961205
1
<2
961212
1
<2
961219
1
<2
961226
1
<2
970102'
1
<2
970109
1!
<2
970116
1
<2
970123
1
<2
970130
1
<2
970206
1
<2
970213
1
<2
970220,
1,
<2
970227'
1
<2 -
PAGE 1

Gastonia - Long Crk VWVTP 16.0MGD to South Fork
Parameter =
Lead
Standard =
25
Ng/I
Parameter =
Standard =
Mercury
0.012 pg/l
1
n BDL=1/2DL Actual Data RESULTS nl BDL=1/2DL,Actual Data . RESULTS
960307 1 <2 Std Dev. ; 0.9556 960307 0.4; 'Std Dev. 0.1324
960314 2 2, Mean 1.4943 960314 0.1 1 Mean 0.1302'
960321 1,-<2iC.V. ; 0.6395 960321 0.11 C.V. 1.0171
960328 1' <21n=53 960328' 0.1 n=53
960403' 1' <2' 9604031 0.2
960411 1; <21 Mult Factor = 1.7 960411, 1 ; ,Mutt Factor = 2.2
960418. 1 <2iMax. Value 61Ng/1 960418' 0.2 Max.IValue 1 pgA
960425 1 <2, Max. Pred Cw, 10.2; pg/I 960425; 0.1 i Max. Pred Cw 2.2 Ng/1
960502 1 ; <21Allowable Cw 134.91 NgA 9605021 0.1'' Allowable Cw 0.065 NgA
960509 1 <2, 960509; 0.1
960516, 1; <2, 960516! 0.1
960522 1' <2 9605221 0.1
960523 1; <21 960523' 0.1
960530 1; <21 9605301 0.1
960606 3; 3; j 960606; 0.1
960613 1: <21 960613; 0.1
960620 6, 6 i 9606201 0.1
960627 1' <2' 1 960627, 0.1
960704 2 2
960711 1; <21
960718 1 <2'
960725 1 <2
960801 1', <2
960808 2 2'
960815 1 <2;
960822 1, <2
960829 1; <2'
960905 1; <2,
960912 2 2
960704; 0.1
9607111 0.1
960718: 0.1
960725' 0.1,
960801 `0.1
960808; 0.1
9608151 - 0.3
960822; 0.1
9608291 0.1
960905 0.1
960912 0.1'
960919 3 3, 960919' 0.1
960926 1; <2 960926; 0.1
961003
1 <2 961003; 0.1
961010
1 <2 961010' 0.1
961017 1 <2, 961017, 0.1
961024 1 <2 961024; 0.1
961031
1. <2' 1 961031; 0.1
961107 11 <2 9611071 0.1
961114 2 2 ; 9611141 0.1
961121 3, 3, 961121! 0.1
961126 3 3, 961126' 0.1'
961205' 3. 3 961205' 0.1
961212 2 2' 961212' 0.1
961219 1 <2, 961219 0.1
961226
970102
970109
3, 3'
2.21 2.2:
1 <2;
961226 0.1
9701021 0.11
9701091 0.1'
970116 1 <21 970116 0.11
970123 1; <2 970123, 0.1
970130 is <2, 970130' 0.11
970206 3, 3i 970206! 0.11
970213 1; <2 970213, 0.1'
970220 1' <2! 9702201 0.1.1
970227. 1; <2. 970227i 0.1
PAGE 1

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
, Secretary
A. Preston Howard, Jr., P.E., Director
VVajii Mc De�M
Mr. Peter Haid
Amerada Hess Corporation
1 Hess Plaza
Woodbridge, New Jersey 07095-0961
Dear Mr. Haid:
461111711CTIA
11=3EHNFi
Ju , 1997
Subject: Permit No. NC0003549
Permit Modification
Stormwater Collection/Treatment
Selma Distribution Terminal
Johnston County
On December 3, 1996 and February 11, 1997, Amerada Hess submitted a request for a permit
modification and Authorization to Construct. Amerada Hess proposes to install a railroad car jet -fuel loading rack
at the Selma Terminal. Stormwater within the bermed rail car loading area will flow via the collection system to
an oil/water separator and then to a lined stormwater retention lagoon. At the southwestern corner of the property,
the lagoon will discharge through a new outfall 002 into a riprap ditch, and ultimately to an unnamed tributary to
Mill Creek, a class WS-IV, NSW stream. The NPDES permit has been modified to account for the new outfall
002 at the Selma Terminal. Monitoring requirements for all oil terminals in North Carolina have been standardized
since the time of the Selma Terminal's last NPDES permit renewal. These new standardized monitoring
requirements will apply to outfall 002, but not outfall 001. Next year when the permit is renewed, the
standardized requirements will be applied to 001.
Annual toxicity testing will continue at outfall 001, whereas episodic testing will be required at outfall 002
until the facility qualifies for annual testing at this outfall. Please note that the format of the special conditions
section at the end of the permit has changed. In addition, the special condition pertaining to phosphorus has been
eliminated as it is not applicable to oil terminal discharges. Second, collection of representative samples shall be
required during period of discharges. Should there be no discharge during normal working hours, the permittee
shall report "no discharge" for that reporting period. The Authorization to Construct associated with the
proposed modification was issued April 28, 1997.
Please find enclosed the modified sections of the permit referenced in the preceding paragraph. Replace
the original sections in your permit with the newer enclosed sections and discard the original sections. All other
terms and conditions contained in the original permit remain unchanged and in full effect. These permit
modifications are issued pursuant to the requirements of North Carolina General Statutes 143-215.1 and the
Memorandum of Agreement between North Carolina,and the. U.S. Environmental Protection Agency.
If any parts, measurement frequencies or sampling requirements contained in this permit modification 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, an filed with the Office of Administrative Hearings, Post Office Drawer
27447, Raleigh, North Carolina 27611-7447. Unless such demand is made this decision shall be final and
binding.
P.O. Box 29535, Raleigh, North Carolina 27626-0535
An Equal Opportunity Affirmative Action Employer
elephone 919-733-5083 FAX [phone]
50% recycled/ 10% post -consumer paper

BAI
Gastonia - Crowders Crk WWTP 6.0MGD to Crowders Creek
Parameter =
Lead
Parameter =
Mercury
Standard =
25
pg/I
Standard =
0.012
j/I
n
BDL=1/2DL
Actual Data
RESULTS
n
BDL=1/2DL
Actual Data
RESULTS
1
0.741
0.741
Std Dev.
1.0374
1
0.00478
0.00478
Std Dev.
0.003
2
0.912
0.912
Mean
1.4855
2
0.00484
0.00484
Mean
0.0063
3
4.1
4.1
C.V.
0.6984
3
0.00821
0.00821
C.V.
0.4368
4
1.39
1.39
n=10
4
0.00628
0.00628
n=53
5
0.887
0.887
5
0.00434
0.00434
6
1.21
1.21
MultFactor =
8
6
0.00393
0.00393
MultFactor=
10.2
7
1.48
1.48
Max. Value
4.1
pg/I :: 7
0.00719
0.00719
Max. Value
0.0128
pg/I
8
1.49
1.49
Max. Pred Cw
32.8
pg/I 8
0.00669
0.00669
Max. Pred Cw
0.1306
pg/I
9
0.465
0.465
Allowable Cw
60.8
pg/I 9
0.00368
0.00368
Allowable Cw
0.029
Ng/I
10
2.18
2.18
10
0.0128
0.0128
Parameter =
Zinc
Standard =
50
pg/I
n
BDL=1/2DL
Actual Data
RESULTS
1
77.8
77.8
Std Dev.
24.94
2
107
107
Mean
87.3
3
132.5
132.5
C.V.
0.2857
4
98.5
98.5
n=10
5
81.2
81.2
6
73.2
73.2
Mult Factor=
2.2
7
82.2
82.2
Max. Value
132.5
pg/I
8
83.7
83.7
Max. Pred Cw
291.5
pg/I
9
37.1
37.1
Allowable Cw
121.5
pg/I
10
99.8
99.8
PAGE 1

JUL 23 '97 04:30PM P.1
State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Environmental Health
Public Water Supply Section
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
Linda C. Sewall, Director
MEMORANDUM
TO: David Goodrich
Discharge Permits Unit
Division of Environmental Management
FROM: Linda Sewall
Division Director
Division of Environmental Health
DATE. July 8, 1997
SUDJECT: Draft National Pollutant Discharge Modification
Elimination System Permit # NC0003549
Stormwater Collection/Treatment
Selma Distribution Terminal
Johnston County
Y-kk‹1,
T o : / &I// c/ r:
J 7/7
Reference is made to the above mentioned Draft National Pollutant Discharge
Elimination System Permit. We have reviewed this permit application and determined that
the proposed discharge will not be sufficiently close to any existing or known proposed
public water supply intake so as to create an adverse effect on water quality.
We concur with the issuance of this permit provided the facility is operated and
maintained properly, the stated effluent limits are met prior to discharge, and the discharge
does not contravene the designated water quality standards.
If we can be of further assistance, please contact us.
LS/GTL/ncp
cc: J. Wayne Munden
Michael L. Douglas
P.O. Box 29536 A Raleigh, NC 27626.0536
Telephone [phone] A FAX [phone]
NBC
An Equal Opporuniry Affirmative Action Empiayer
50 recyclod/1O.post-consumerpgp9r

•
GAT
Gastonia - Crowders Crk WWTP 6.0MGD to Crowders Creek
Facility Name =
City of Gastonia/Crowders Creek WWTP
Parameter =
Cadmium
Parameter =
Nickel
NPDES # =
NC0074268
Standard =
2
pg/I
-_ -
Standard =
88
1-19/I
Qw (MOD) =
6
Qw (cfs) =
9.2832
7Q10s (cfs)=
13.3
n
BDL=1/2DL
Actual Data
RESULTS
n
BDL=1/2DL
Actual Data
RESULTS
IWC (%) =
41.15
1
0.097
0.097
Std Dev.
0.035182224
1
11.4
11.4
Std Dev.
2.40605001
2
0.118
0.118
Mean
0.1067
2
9.05 9.05
Mean
9.489
FINAL RESULTS
CONVERSN
BAT
3
0.161
0.161
C.V.
0.32973031
3
10.55 10.55
C.V.
0.25356202
Cadmium
RESLT: 4
0.134
0.134
n=10
4
10.4 10.4
n=10
Max. Pred Cw
0.6601
0.271
0.21
5
0.112
0.112
5
10, 10
Allowable Cw
4.9
2.000
6
0.087
0.087
Mutt Factor =
4.1
6
7.57
7.57
Mult Factor =
1.5
Nickel
8.756
7
0.118
0.118
Max. Value
0.161
pg/I '
7
8.34
8.34
Max. Value
14.2
pg/I
Max. Pred Cw
21.3
16.4
8
0.106
0.106
Max. Pred Cw
0.6601
pg/I `
8
7.95
7.95
Max. Pred C‘
21.3
pg/I
Allowable Cw
213.8
88.000
9
0.025
0.025
Allowable Cw
4.9
pg/I
9
5.43
5.43
Allowable Cm
213.8
pg/I
Lead
Max. Pred Cw
Allowable Cw
Mercury
_
32.8
60.8
13.483
10
0.109
0.109
pg/I
pg/I
10
14.2
14.2
5.3
25.000
0.015
Parameter =
Copper
Parameter =
Silver
Standard=
7
pg/I
Standard=
0.06
pg/I
Max. Pred Cw
0.13056
0.054
Allowable Cw
0.029
0.012
n
BDL=1/2DL
Actual Data
RESULTS
n
BDL=1/2DL
Actual Data
RESULTS
Copper
Max. Pred Cw
63.7
26.185
34.1
1
21.3
21.3
Std Dev.
5.126016539
1
0.0538
0.0538
Std Dev.
0.10423753
2
21.2
21.2
Mean
19.143
0.267774985
2
0.0504
0.0504
Mean
0.10604
0.98300198
Allowable Cw
Silver
Max. Pred Cw
17.0
1.5785
7.000
0.649
3
23.15
23.15
C.V.
3
0.385
0.385
C.V.
0.51
161
4
24.5
24.5
n=10
2.6
4
0.111
0.111
n=10
5
6
22
18.5
22
5
6
0.0493
0.0493
Allowable Cw
0.146
0.060
18.5
Mult Factor =
0.0529
0.0529
Mult Factor 4. 4.1
Zinc
Max. Pred Cw
Allowable Cw
291.5
1.19.826
50.000
7
17.7
17.7
19.1
6.08
17.9
Max. Value
24.5
7
0.0692'
0.0692
0.114
0.0328
0.142
Max. Value
Max. Pred Cl
Allowable C\
0.385
pg/I
8
19.1
6.08
Max. Pred C
63.7
8
0.114
1.5785
0.1
pg/I
p9I_
121.505
9
Allowable Cw
17.0
/I
pg/I
9
0.0328
10
17.9
10
0.142
R' a4SQrtiP,5-66. po7e;/L) 7// 0,4 7f- 0, 5147a- 0/06 y 64,77 -7/9
BA-7- Y2 Sc)Cr7,S Coe_ vtil✓V r4 2 E- '711z-s V 41 vE3 CA C (VSf Ul 3-f 7"61---e C & '_S
P4 74 r t �T �s mi. G / p IF��/�sa v�l13�E 7E-�i�r �4ti�3 L sz_S
/A-71-z7itt4yfr ,ise-t y ccoq
PAGE 1

b!t r
..wr _ , v Gastonia -Crowders Crk WWTP
7
Facility Name =
City of Gastonia/Crowders Creek WWTP Parameter =
Cadmium
NPDES # =
NC0074268
Standard =
2
pg/I
Qw (MGD) =
6
Qw (cfs) =
9.2832
7Q10s (cfs)=
13.3
n
BDL=1/20L
Actual Data
RESULTS
IWC (%) =
41.15
960307
1
<2
Std Dev.
0.410197653
960314
1
<2
Mean
0.905825397
FINAL RESULTS
CONVERSIC 960321
1
<2
C.V.
0.452844062
Cadmium
960328
1
<2
n=63
Max. Pred Cw
3.0
1.2
960403
1
<2
Allowable Cw
4.9
2.0
960411
2
2
Mult Factor =
1.5
Chromium
960418
1
<2
Max. Value
2
pg/I
Max. Pred Cw
14.4
5.9
960425
1
<2
Max. Pred Cw
3
pg/I
Allowable Cw
121.5
50.0
960502
1
<2
Allowable Cw
4.9
pg/I
Copper
960509
1
<2
Max. Pred Cw
64.4
26.5
960516
1
<2
Allowable Cw
17.0
7.0
960522
1
<2
Lead
960523
1
<2
Max. Pred Cw
10.2
4.2
960530
1
<2
Allowable Cw
60.8
25.0
960606
1
<2
Mercury
960613
2
2
Max. Pred Cw
0.190
0.078
960620
1
<2
Allowable Cw
0.029
0.012
960627
1
<2
Nickel
960704
1
<2
Max. Pred Cw
68.0
28.0
960711
1
<2
Allowable Cw
213.8
88.0
960718
1
<2
Silver
960725
1
<2
Max. Pred Cw
3.200
1.315
960801
1
<2
Allowable Cw
0.146
0.060
960808
1
<2
Zinc
960815
1
<2
Max. Pred Cw
172.3
70.8
960822
1
<2
Allowable Cw
121.5
50.0
960829
1
<2
960905
1
<2
960912
1
<2
960919
1
<2
960926
1
<2
961003
1
<2
961010
1
<2
961017
1
<2
961024
1
<2
961031
1
<2
961107
2
2
961114
1
<2
961121
1
<2
961126
1
<2
961205
1
<2
961212
1
<2
961219
1
<2
961226
1
<2
970102
1
<2
970109
1
<2
970116
1
<2
970123
1
<2
970130
1
<2
970206
1
<2
970213
1
<2
970220
1
<2
970227
1
<2
1
0.097
0.097
2
0.118
0.118
3
0.161
0.161
4
0.134
0.134
5
0.112
0.112
6
0.087
0.087
7
0.118
0.118
8
0.106
0.106
9
0.025
0.025
10
0.109
0.109
PAGE 1

Gastonia -Crowders Crk WWTP
Parameter=
Chromium
Parameter=
Copper
Standard =
50
pg/I
Standard =
7
pg/I
n
BDL=1/2DL
Actual Data
RESULTS
n
BDL=1/2DL
Actual Data
RESULTS
960307
7
Std Dev.
1.99745847
960307
23
23
Std Dev.
8.0393
960314
._ ,_. ,. ,.6
Mean
3.16981132
960314
nd
_ nd
Mean
18.836
960321
7
C.V. '
0.63015059
960321
nd
nd
C.V. '
0.4268
960328
8
n=63
960328
18
18
n=63
960403
- 4
960403
nd
nd
960411
3
Mult Factor d
1.6
960411
24
24
Mult Factor =
1.4
960418
3
Max. Value
9
pg/I
960418
nd
nd
Max. Value
46
pg/I
_960425"
, 4
Max. Pred C
14.4
pg/I
960425
11
11
Max. Pred Cw
64.4
pg/I
960502
- 1
Allowable CI
121•.5
pg/l
960502
nd
nd
Allowable Cw
17.0
pg/I
960509
'' 2
960509
10
10
96Q516
4
960519
rid
' nd
960522
;, _ ,; 2
e
- _
• 960522
9
9
960523
. , 2
.,
960523
nd
nd
960530_,
; 2
-
960530
11
11
960606
2
960606
nd
nd
960613
2
960613
14
14
960620
4
960620
nd
nd
960627
9
960627
9
9
960704
1
960704
nd
nd
960711
1
960711
21
21
9607.1,8
• 2.•
960718
nd
nd
960725
_ _ • 5
`- ->
- 960725
16
16
960801
1
960801
nd
nd
960808
2
960808
16
16
960815
6
960815
nd
nd
960822
- 3
r
960822
nd
nd
960829:
2
:=1• :° •.
960829
23
23
960905
3
960905
nd
nd
960912
2
960912
46
46
960919
4
960919
nd
nd
960926
1
960926
38
38
961003
" - 2
• -
-
961003
nd
nd
961010
2
961010
26
26
961017
3
961017
nd
nd
961024
3
961024
22
22
961031
1
961031
nd
nd
961107
1
961107
25
25
96111'4.
1
..
. 961114
nd
nd
•
961121
3
961121
nd
nd
961126
2
.,
.961126
16
16
961205
3
_
961205
nd
• nd
961212
4
961212
18
18
96121-9
3
-
961219
- nd
nd
961226
4
961226
9
9
970102
1
_
970102
nd
nd
970109
2
, _ •.
970109
11
11
970116
- 6
'
970116
nd
nd
970123
7
970123
nd
nd
970130
6
970130
14
14
970206
-. - •, 2
•
- 970206
nd
nd
970213
3
_
970213
19
19.
970220
2
•
970220
nd
• nd
970227
2
-
970227
nd
nd
54
1
' 21.3
21.3
55
. 2
- 2.1.2
21.2
56
3
23.15
23.15
57
•
4
24.5
24.5
58
i
-
; r ,.
5
22
22
59
-
. 6
18.5
18.5
60
7
17.7
17.7
61
8
19.1
19.1
62
• '
9
6.08
6.08
63
10
17.9
17.9
PAGE 1

DIMENSIONS & WEIGHT
• METRIC STANDARD
CAT, NUMBER A L WT
rnm mr1F4P441-111Ag.;4-'":(9c-`-?"(;•-`",
BO • 200, 75-1051.0
75.2
85 227 93 • i'''1V'44Y mar.O'-'''' k."51''''ff`, V.
75-3 Ve3ratiMrrina i fon-',71.1613 , 1.4
•-_; oi .
754-T ; '‘..- 50 .: -.200--, .75- - 175 1.0
75-2, .. 1.3
-tsT ., ,
. • 75-3-T b 235 49•, 1.4 •
CAT. NUMBER
73-2
75-21
ir 75-3
75-3-T
75-21-T
75-3-T
2 7
8
A •• L • WT•',..., • .. ..,;;;; ..,4.!-.ybli l'.,'•fi•1'.'(••:-. ill r.•'.. In " - -',- In
. )6 ''''' ' '''''''' in'•; :'.'. :-; :s • ; !, , -• . '
24 .4 }.• . ' 2.2 ;
23 ,11 4 i 7 •. '
1. ., , ;:, 1 3 • tr;''... -..2.. .--.triV".!;','
3„ ., , ,,17, .....,;_,:' •,:k.,, • 4,...,1,, ,, 4.e•*e.--4
',-, '2.2' .-;;•,1,.•• ••1;1,.,,,Lx. jt_.t.j=r___._._.____,s=3„,t,•l- .,-.,y;31.• " ,•-s• . —, • -
-1.z", -;,.-....j..,,,, ,,,,,L;•' •• • ..1. 2,21„,.4,..„•:.,, ce li •
1.„ 7 i
11 1 I
2,- .; 5 11 3 1g -•• 7. 2.7 1 L.
$PECIFICATIONS
Sizes 50mm, 65mm, 80mm 2", 2/", 3"
Threads ,, B.S,P. : .t..:- ,,t,,,; 'v.: -,.., - NP.:.37.,;1„,,,, ,..,.. , '' ::c°•': ,1`-';'.
,
T-valve Throttle Actuator for Flow Thiottling:
S-valve . w; Solenoid for RemoteiElectrical Control
Max. Temperature 80°C
•
/MI
, • ,.
175°F
I - '
..W4
U ' ••
1
• ;11,s."'".-.;;V2,0-• ".
r' •
'15, 1 • `••
10
•
7
STANDARD BONNET
•
• ^I-- .;-•1 • ",r'''.5","-
•
" 5.: ",•'. 7^7P'"•% ,
2-WAY BONNET
+ THROTTLE
• N „7 nALTL-AsTicMITH
-THFIOTTLING HANDLE
t
•
• Diaphragrti
hbeCROit
0000pringSeat
of:
olenOlO
.r•,•;$01ene-0'0090,(:-
00,*,
•
.'0-Ring . .
' 6. Throttling Handle
T• Handle Locking Ring
T
• • • •- ' •••-
5 ,
• •". ,
[Do 3
' •r:
715.
•_.. • . • .
• . T . 1. 0.--* GI. 7

Gastonia -Crowders Crk WWTP
• rameter =
Lead
Parameter =
Mercu
Standard =
25
g/I
Standard =
0.012
p /I
, ,
. ...
n
BDL=1/2DL
Actual Data
RESULTS
n
BDL=1/2DL
Actual Data
RESULTS
960307
1
<2
Std Dev.
1..1908
970401
0.1
<0.2
Std Dev.
0.0475
960314
1
<2
Mean
1.6342
`
970410
0.1
<0.2
Mean
0.0592
960321
1
<2
C.V.
0.7287
970417
0.1
<0.2
C.V.
0.8024•
960328
1
<2
n=63
970424
0.1
<0.2
n=23
960403
•
1
<2
970501
0.1
<0.2
960411
1
<2
Mult Factor =
1.7
970508
0.1
<0.2
Mult Factor =
1.9
960418
1
<2
Max. Value
6
pg/I
970515
0.1
<0.2
Max. Value
0.1
pg/I
960425
1
<2
Max. Pred Cw
10.2
pg/I
970523
0.1
<0.2
Max. Pred Cw
0.19
pg/I
960502
1
<2
Allowable Cw
60.8
p./I '
'
970529
0.1
<0.2
Allowable Cw
0.029
pg/1
960509
1
<2
970605
0.1
<0.2
960516
•
2.1
i
2.1
970612
• 0.1
<0.2
M
960522
•
1
<2
970619
0.1
<0.2
960523
1
<2
970626
0.1
<0.2
960530
1
<2
1
0.00478
0.00478
960606
1
<2
2
0.00484
0.00484
960613
4
4
3
0.00821
0.00821
960620
2
2
4
0.00628
0.00628
960627
2
2
5
0.00434
0.00434
960704
1
<2
6
0.00393
0.00393
960711
1
<2
7
0.00719
0.00719
960718
1
, •
<2
8
0.00669
0.00669
960725
1
<2
9
0.00368
0.00368
960801
1
<2
10
0.0128
0.0128
960808
1
<2
.
960815
1
<2
960822
, 1
'
<2
960829
1
<2
' . fr'
. L.. ,
r.r.U.SMOMINIEIIMMI
IMPLtittMl.
1111111111
'
960905
1
<2
••
960912
2
2
laillOnaniffilera
‘
960919
1
<2
MilefflielgREPOWn,
;,...
960926
1
<2
ELIMItteigerged2111.11EM
WalligSWAREMBRIELIEN=
961003
1
<2
961010
2
2
MEM
1.1.11.E.
961017
2
2
961024
1
<2
961031
1
<2
961107
1
<2
961114
3
3
•
.
961121
4
4
961126
2
.. 2
`
961205
6
6
961212
3
3
..
961219
5
•
5
' '
961226
4
4
970102
1
<2
,
970109
1
,<2
970116
1
<2
970123
1
.
<2
970130
1
<2
970206
1
. <2
970213
1
, <2
970220
4
4
•
970227
4
4
1
0.741
0.741
2
0.912
0.912
.
3
4.1
4.1
4
1.39
1.39
'5
0.887
•
0.887
6
1.21
1.21
7
1.48
1,48
8
1.49
1.49
9
0.465
0.465
10
2.18
2.18
PAGE 1

,.IMIT SWITCH
Description:
Single pole, double -throw Micro -switch.
Applications:
Activation of electrical equipment (pumps, motors,
alarm systems).
Operation:
Can be connected to open or close electric circuits,
when activated by Valve's Position Indicating Rod.
Valve moves rod, which In turn starts or shuts -off
electrical systems when valve has reached a certain '
position.
Electric Data: 380 V/10 Amp. 1
`MULTI -PURPOSE RELAY
Description:
A 3-way relay, which can be connected N.O.
^(Normally Open) or N.C. (Normally Closed).
Activated by remote pressure source, by Solenoid or
(manually.
•
Applications:
— Acceleration of Valve response to remote control
— Manual activation of Valve
-- Reversion of hydraulic command (N.O./N.C.).
Ports: i" BSP threads
SOLENOIDS
Description:
Electrically activated Micro Valve.
Applications:
Electric control of hydraulic valves.
Operation:
Converts electric signals Into hydraulic commands.
Available types: 3-way Solenoid (for 3-way Control
• Systems)
2-way Solenoid (for 2-way Control
Systems)
N.O. or N.C.
Electric Data:, D/C or A/C
• Continuous current or Magnalatch
Frequency 50 or 80 Hz
Voltage 12 24 110 220 V.
• • (other options possible)'.
IFa41
LIMIT SWITCH
MULTI -PURPOSE RELAYS
3-WAY
,DOROT SOLENOID
N.O.
7-WAY BACCARA SOLENOIDS
ins
C T/.T 'T
)!-T.3 •3[r,N,-."..:T•.=:fA",.y<_ T^T•'TT r7-•?r1_..'�.;n

Gastonia -Crowders Crk WWTP
Parameter=
Nickel
Parameter=
Silver
Standard =
88
Ng/1
Standard =
0.06
Ng/1
n
BDL=1/2DL
Actual Data
RESULTS
n
BDL=1/2DL
Actual Data
RESULTS
960307
5
Std Dev.
10.007
960307
2
Std Dev.
0.8776
960314
5
Mean
15.347
960314
nd
Mean
1.443
960321
15
C.V.
0.6521
960321
nd
C.V.
0.6082
960328
20
n=63
960328
2
n=63
960403
5
960403
nd.
960411
5
Mult Factor =
1.7
960411
2
Mult Factor =
1.6
960418
5
Max. Value
40
pg/I
960418
nd
Max. Value
2
Ng/I
960425
25
Max. Pred Cw
68
pg/1
960425
2
Max. Pred Cw
3.2
pg/I
960502
10
Allowable Cw
213.8
pg/I
960502
nd
Allowable Cw
0.1
pg/I
960509
5
960509
2
960516
30
960516
nd
960522
5
960522
2
960523
5
960523
nd
960530
40
960530
2
960606
10
960606
nd
960613
5
960613
2
960620
28
960620
nd
960627
20
960627
2
960704
5
960704
nd
960711
12
960711
2
960718
5
960718
nd
960725
10
960725
2
960801
30
960801
nd
960808
10
960808
2
960815
20
960815
nd
960822
30
960822
nd
960829
30
960829
2
960905
30
960905
nd
960912
13
960912
2
960919
30
960919
nd
960926
30
960926
2
961003
30
961003
nd
961010
12
961010
2
961017
10
961017
nd
961024
20
961024
2
961031
40
961031
nd
961107
31
961107
2
961114
10
961114
nd
961121
20
961121
nd
961126
20
961126
2
961205
5
961205
nd
961212
18
961212
2
961219
20
961219
nd
961226
10
961226
2
970102
10
970102
nd
970109
12
970109
2
970116
20
970116
nd
970123
10
970123
nd
970130
1
970130
2
970206
10
970206
nd
970213
15
970213
2
970220
15
970220
nd
970227
35
970227
nd
1
11.4
11.4
1
0.0538
0.0538
2
9.05
9.05
2
0.0504
0.0504
3
10.55
10.55
3
0.385
0.385
4
10.4
10.4
4
0.111
0.111
5
10
10
5
0.0493
0.0493
6
7.57
7.57
6
0.0529
0.0529
7
8.34
8.34
7
0.0692
0.0692
8
7.95
7.95
8
0.114
0.114
9
5.43
5.43
9
0.0328
0.0328
10
14.2
14.2
10
0.142
0.142
PAGE 1

Vik**443 -6' $dNdr.51.d t4,46, °Y eti r w c,• • ` . v04 i '• .
NETAFINI® �, IRRIGATION, INC.
.',:,1^:
DAN 7000 SERIES MICRO -SPRAYER
DAN 8000 SERIES MICRO -SPRINKLER
THE 7000 SERIES
MICRO -SPRAYER
WITH FIXED
SPREADER
THE 8000 SERIES
MICRO -SPRINKLER
WITH ROTATING •
SPINNER
Micro -sprinkler and micro -sprayers from Netafim's DAN
Sprinkler line are the result of many years of practical
thought and experience. The DAN sprinklers offer a
complete and highly versatile line of products and
accessories. The modular system design permits simple
interchangeability of components. It also allows the
designer to be specific in his demands for flow rate,
area of coverage, and distribution pattern.
The Netafim commitment to product quality is evident
in all the materials used in the DAN sprinkler line. Only
the finest virgin resins are used. Particular attention is
given to those parts subjected to abrasive water, chem-
ical or environmental exposure, and physical stress.
Netafim's high product quality combined with,its
national sales/support team assures the grower of many
years of consistent and reliable product use.
The complete range of DAN sprinkler systems is very
broad to meet the needs of various applications, and
local conditions:
7000 Series Micro -sprayers with fixed spreaders
8000 Series Micro -sprinklers with rotating spinners
Described in separate brochures:
2001 Series
7200 Series
2200 Series
Pressure compensating, self -flushing
micro -sprinklers
Pressure compensating, self -flushing
micro -sprayers (Dan PC)
Ball Drive Sprinklers for flows of 0.5 to
1 gpm and throws up to 43 feet
diameter
Advantages of Micro -Sprinklers and Micro -Sprayers
Properly designed and installed micro -irrigation systems are 3)
highly efficient. Micro -sprinklers and micro -sprayers offer addi-
tional benefits as well: '
1 Visual management of systems is possible since sprinklers
and sprayers can be observed from a distance. + :. 4)
2) Uniform distribution of water over a large rooted soil area.
This can mean better management in sandy soils or areas of ' .
high water table, where lateral water movement may be squall, L"
sand the risk of deep water percolation high.`
Design flexibility and versatility are achieved by com-
bining various pressures, nozzle diameters, and spinners
or spreaders. This allows the user to modify the system •
as crops mature and root zones expand. -
Uniform applications of chemicals such as fertilizers and
herbicides can be made with the micro -sprinkler systems.
Economical conversion can usually be made from
existing irrigation systems. In most cases, distribution com-
ponents (filters, mains, valves, laterals) can be used with
new micro -sprinkler or micro -sprayer systems.
J,
"fi

Gastonia -Crowders Crk WWTP
Parameter=
Zinc
Standard =
50
pg/I
n
BDL=1/2DL
Actual Data
RESULTS
960307
55
Std Dev.
22.533
960314
nd
Mean
79.088
960321
nd
C.V.
0.2849
960328
81
n=63
960403
nd
960411
52
Mult Factor=
1.3
960418
nd
Max. Value
132.5
pg/I
pg/I
pg/I
960425
33
Max. Pred Cw
172.25
960502
nd
Allowable Cw
121.5
960509
61
960516
nd
960522
47
960523
nd
960530
39
960606
nd
960613
70
960620
nd
960627
94
960704
nd
960711
92
960718
nd
960725
96
960801
nd
960808
80
960815
nd
960822
nd
960829
85
960905
nd
960912
88
960919
nd
960926
66
961003
nd
961010
91
961017
nd
961024
79
961031
nd
961107
110
961114
nd
961121
nd
961126
59
961205
•nd
961212
100
961219
nd
•961226
101
970102
nd
970109
80
970116
nd
970123
nd
970130
61
970206
nd
970213
96
970220
nd
970227
nd
1
77.8
77.8
2
107
107
3
132.5
132.5
4
98.5
98.5
5
81.2
81.2
6
73.2
73.2
7
82.2
82.2
8
83.7
83.7
9
37.1
37.1
10
99.8
99.8
PAGE 1

4'
NETAFIM' '` IRRIGATION, INC.
DAN MICRO -IRRIGATION .
PRODUCT SELECTION
Dan Bridge Assembly
The basic bridge accepts any nozzle and any spreader (7000
series) or spinner (8000 series),to form the basic micro -sprinkler.
This micro -sprinkler can then be joined to any of a wide variety of
mountings, adapting the micro -sprinkler to almost any
application. All parts can be assembled and disassembled in the
field without the use of tools, or the need to shut off the water supply.
Flow (GPH) Part
Nozzles Orifice 20 PSI Number
Violet Nozzle , ; .032" ,
Brown Nozzle ' .035"
Grey Nozzle .044"
Green Nozzle #' .055"
Orange Nozzle...060"
Yellow Nozzle .067"
Blue Nozzle .075"
Ivory Nozzle .079"
Red Nozzle .087"
Black Nozzle .094"
7.8
9.5
15.5
23.0
.26.6
35.5
43.9
52.1
56.9
66.5
(77-930504)
(77-930500)
(77-930509)
(77-930502)
(77-930505)
(77-930506)
(77-930503
(77-930501)
(77-930507)
(77-930508)
ti
SPRINKLER
OR -.-
SPREADER
NOZZLE Ix--
MOUNT
-E- BRIDGE
(77-930100)
Nozzles
The Dan system offers ten nozzle sizes to customize the micro •
-
sprinkler flow rate to meet your design needs. Our Potformance
Charts brochure describes the precise flow for each color coded
nozzle over a range of pressures, and the diameter of throw for
these nozzles when used in combination with all of the spreaders
and spinners shown below.
Spreaders (7000 series)
AGreen 12-Jet: (77-930702)
Segmented (12 stream) circular spray
pattern gives maximum diameter for a
fixed spreader.
Yellow Flat: (77-930706)
Flat pattern with excellent inside
coverage for highly uniform pattern.
•
Orange Concave: (77-930705) ,
• Sprays downward (low angle spray) for
limited diameter coverage.
Violet Misting: (77-930704)
Designed to produce minimum droplet
size for misting applications.
Black 90°: (77-930708)
Produces well-defined 90° pattern with
small radius.
Red 180°: (77-930707)
Gives half -circle pattern with small
radius.
.11I
Oil
Blue Strip: (77-930703)
Waters a rectangular strip pattern
with width approximately 25%,of length.
Spinners (0000 series)
Black Round: (77-930208)
Medium droplet size with medium
coverage.
Black Single Wing: (77-930308)
Large droplet with large coverage.
Insect -proof: (77-930458 Cup Black)
(77-930407 Red Spinner)
Two piece pop-up spinner prevents
insects from blocking nozzle. Medium
droplet size and medium coverage.
Orange Oblong: (77-930305)
Largest droplet with largest coverage.
Very little misting even at high flow rates.
Green Upside Down: (77-930202)
Designed to be installed inverted
(upside-down), for use in overhead
(suspended) systems.