NCG080682_MONITORING INFO_20190103

STORMWATER DIVISION CODING SHEET
NCG PERMITS
PERMIT NO.
V C
DOC TYPE
❑ HISTORICAL FILE
MONITORING REPORTS
DOC DATE
1 2jO ) 0 l (),3
YYYYMMDD

r
Semi-annual Stormwater Discharge Monitoring Report
for North Carolina Division of Water Resources General Permit No NCG080000
Date submitted December 14 2018
CERTIFICATE OF COVERAGE NO NCGO8 0 6 8 2
FACILITY NAME C,tyof Ashevllle Fleet Maintenance
COUNTY Buncombe
PERSON COLLECTING SAMPLES Rodney Clark 1 Greg Hutchins (Wood)
SAMPLE COLLECTION YEAR 2018
SAMPLE PERIOD ❑ Jan -June H July-Dec
or ❑ Monthly' (monthl
RECE j j=Q%CHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
LABORATORY Pnsm Laboratones Inc Lab Cert f# 402 ❑Zero -flow ❑Water Supply ❑SA
Comments on sample collection or analysis JAN 0 3 2019 Mother Class B � -
F denote$ Samples collected through existing sediment filter baskets pH collected prier to baskaiCENTRAL FI1_ESS
WR SECTION REMEMBER TO SIGN ON THE REVERSE
Did this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per month?Q yes ❑no
(if yes, report your analytical results In the table immediately below)
Part A Vehicle Maintenance Areas Monitoring Requirements (If applicable)
No discharge this period'
Outfall
No
Date
Sample Collected,
mo/dd/yr
00530
00400
00556
Total Suspended
Solids, mg/L
PH,
Standard,units
Non -Polar Oft and Grease/TPH EPA
Method 1664 (SGT-HEM), mg/L
New Motor Oil Usage,
Annual average gal/mo
Benchmark
-
50 or 100 see permit
Within 6 0 —9 0
45
-
OF#21$W 2
11102118
71
584
97
550
0F#215W 21`(iltered)
11102118
70
584
r5 0
550
OF94JSW-0(iltered►
11/02118
36
551
<5 0
550
Part B Oil/water Separators and Secondary Containment Areas at Petroleum Bulk Stations and Terminals (if applicable)
Outfall
No
Date`
Sample,Collected,
mo/dd/yr
00556
00530
00400
Non -Polar Oil and Grease/TPH EPA Metho&
1664 (SGT-HEM), mg/L
Total Suspended Solids,
mg/L
pH,
Standard units
Permit Limit
-
15
50 or 100 see permit
6 0 — 9 0
-d
l For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here
SWU-2io last rcutst.d April 11, 2013
Faoe 1 of 3

STORM EVENT CHARACTERISTICS
Date (first event sampled)
Total Event Precipitation (inches) _
Date (list each additional event sampled this reporting period, and rainfall amount)
Total Event Precipitation (inches)
Note 1f you report a sample value in excess of the benchmark, you must implement Tier 2, 77er 2, or Tier 3 responses See General Permit text
FOR PART .A.AND PART a MONITORING RESULTS
0 A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS SEE PERMIT PART II SECTION 8
• 2 EXCEEDANCES IN A ROW FOR THE SAME PARAMETER AT THE SAME OUTFALL TRIGGER TIER 2 REQUIREMENTS SEE PERMIT PART II SECTION B
• TIER 3 HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDANCES FOR THE SAME PARAMETER AT ANYONE OUTFALL? YES ❑ NO ❑r
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME
Marl an original and one copy of this DMR, including all "No
in the case of "No Discharge" reporl
Division of Water Resources
Alin DWR Central Files
1617 Mail Service Center
Raleigh North Carolina 27699-1617
to
within 30
the lab results (or at end of monitoring period
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED
N certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that
qualified personnel properly gather and evaluate the information submitted Based on my inquiry of the person or persons who manage the system, or those persons directly
responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete I am aware that there are
significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations "
of Permittee)
(Date)
Additional copies of this form may be downloaded at httu //portal ncdenr ore/web/w /ws su/npdesswlltab-4
.A
SWU-250 Dist revised April 11 2013
Page 2 of 2

Semi-annual Stormwater Discharge Monitoring Report
for North Carolina Division of Water Resources General Permit No NCGO80000
Date submitted December 14 2018
CERTIFICATE OF COVERAGE NO NCG08 0 6 8 2
FACILITY NAME City of Asheville Fleet Maintenance
COUNTY Buncombe
PERSON COLLECTING SAMPLES Greg Hutchins/Matt Wallace (Wood)
LABORATORY Pnsm Laboratories Inc Lab Cert # 402
Comments on sample collection or analysis
F denotes samples collected through existing sediment filter baskets pH collected prior to basket
SAMPLE COLLECTION YEAR 2Q18
SAMPLE PERIOD ❑ Jan -June ❑■ July -Dec
or ❑ Monthly! _ !month)
DISCHARGING TO CLASS ❑ORW ❑HCIW []Trout ❑PNA
❑Zero -flow [:]Watersupply [:]SA
Mother Class B
PLEASE REMEMBER TO SIGN ON THE REVERSE 4
Did this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per month? ✓❑yes ❑no
(if yes, report your analytical results in the table immediately below)
Part A Vehicle Maintenance Areas Monitoring Requirements (lf applicable)
❑ No discharge this period;
Outfall
No
Date
Sample Collected,
mo/dd/yr
00530
00400
00556
Total Suspended
Solids, mg/L
pH,
Standard units-
Non -Polar Oil and,Grease/TPH EPA
Method 1664 (SGT-HEM), mg/L
New Motor Oil Usage,
Annual average gal/mo
Benchmark
-
50 or 100 see permit
Within 6 0 —„9 0
15
-
OFNMW 51Fpiteredf
1 11102/18
10
582
<5 0
550
OF961SMOF(Mered)
11102118
<3 3
551
<5 0
550
Part B oil/water Separators and Secondary Containment Areas at Petroleum Bulls Stations and Terminals (If applicable)
Outfall
No
Date
SampleRCollected,
mo/dd/yr
00556
00530
00400
Non -Polar Oil and Grease/TPH EPA Method
1664 (SGT=HEM), mg/L
Total Suspended Solids,
mg/L
pH,
Standard units
Permit Limit
-
15
SO or 100 see permit
6 0 -- 9 0
i For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here
SWU-250 Iasi rt VNLd April It, 2013
Paoe 2 of 3

STORM EVENT CHARACTERISTICS
Date 111t}2 18 (first event sampled)
Total Event Precipitation (inches) 0 31
Date (list each additional event sampled this reporting period, and rainfall amount)
Total Event Precipitation (inches)
Note If you report a sample value in excess of the benchmark, you must Implement Tier 1, Pier 2, or Tier 3 responses See General Permit text
FOR PART A AND PART B MONITORING_ RESULTS
• A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS SEE PERMIT PART II SECTION B
s 2 EXCEEDANCES IN A ROW FOR THE SAME PARAMETER AT THE SAME OUTFALL TRIGGER TIER 2 REQUIREMENTS SEE PERMIT PART II SECTION B
• TIER 3 HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER AT ANYONE OUTFALL7 YES ❑ NO ■0
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE-) YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME
Most an orrarnal and one conv of this OMR, rncludrna all "No
to the case of "No Discharge" reports] to
Division of Water Resources
Attn DWR Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699 1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED
within 30 days of receipt of the lob results for at end of monitoring period
N certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that
qualified personnel properly gather and evaluate the information submitted Based on my inquiry of the person or persons who manage the system or those persons directly
responsible for gathering the information, the information submitted is to the best of my knowledge and belief, true, accurate, and complete I am aware that there are
significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations "
Permittee)
(Date)
Additional copies of this form may be downloaded at http Uportal ncdenr ore/web/wq/wslsu/ngdessw#tab-4
SWU-250 last rcvisc.d April It 2013
Paae 2 of 3

wood.
December 14, 2018
Mr James Castle
Fleet Manager
City of Asheville
P O Box 7148
Asheville North Carolina 28802
Subject Report of November 2018 Stormwater Discharge Sampling
City of Asheville Fleet Maintenance Building
173 South Charlotte Street
Asheville North Carolina
Wood Project 6252-18 0338 06
Dear Mr Castle
Wood Environment & Infrastructure Solutions, Inc (Wood) is pleased to submit this Report of November
2018 Stormwater Discharge Sampling for the City of Asheville Fleet Maintenance Building located on
South Charlotte Street in Asheville North Carolina This sampling was performed to comply with
requirements contained in the General Permit for Stormwater Discharge (Permit NCG080000 with an
original effective date of November 1 2012, reissued on November 16 2017, and expiring October 31,
2018) issued by the North Carolina Department of Environment and Natural Resources now the North
Carolina Department of Environmental Quality (NCDEQ) City of Asheville s certificate of coverage under
this permit is NCGO80682
Background Information
Six stormwater outfalls (OF#1 through OF#6) are located at the site as shown on the attached Figure 1
Five of the outfalls (OF#2 through OF#6) are located within the industrial area of the site Outfall 0F#1
receives surface runoff from the employee/visitor parking area, which is a non -industrial area Due to the
elevation of the rim of Outfall OF#3 observed historic measurable storm events have not produced
stormwater discharge at this location Two outfalls (OF#2 and OF#6) discharge directly into Town Branch
(also known as Nasty Branch), which is enclosed beneath the site and daylights approximately 1 500 feet
to the southwest of the site The samples collected during the late 2018 storm event were labeled as SW
with their corresponding outfall number (e g SW-2 sample collected from OF#2)
A water quality classification is not listed for Town Branch on the NCDEQ Surface Water Classification
website/map Town Branch s confluence with the French Broad River is approximately 7,000 feet to the
southwest of the site According to NCDEQ's water quality classification of the French Broad River at the
confluence with Town Branch (a Classification B) the French Broad River is not currently classified as the
following sensitive receiving waters Outstanding Resource Waters High Quality Waters Primary Nursery
Areas and Trout Waters Therefore the more protective benchmark value listed in the General Permit for
Correspondence
Wood Environment & Infrastructure Solutions Inc
1308 Patton Avenue
Asheville North Carolina 28806
Tel [phone]

City of Ashevdle Fleet Maintenance Building - November 2018 Stormwater Discharge Sampling December 14, 2018
Wood Project 6252-18 0338 06
total suspended solids (50mg/L) does not apply to stormwater discharges at the site — the applicable
benchmark value for total suspended solids is 100 mg/L
A rain gauge is present at the site approximately six feet above ground in an open area at a distance of at
least twice the height of surrounding structures
Late 2018 Stormwater Sampling Activities
Because of frequent storm events in July and October opportunities for a measureable storm event with a
preceeding 72-hour dry period were limited Additionally, several of the measureable storm events were
outside of the facility s normal operating hours
Based on the lack of measureable storm events in the later portion of the late 2018 permit sampling
period (Period 2) Wood recommended and performed sampling at the first measureable storm event in
November This storm event with sampling activities described below is considered to be representative
of the late 2018 permit sampling period however a NCDEQ Semi -Annual Stormwater Discharge
Monitoring Report with an indicated no discharge for the late 2018 period is attached
November 2018 Stormwater Sampling Activities
Wood personnel were onsite to perform stormwater sampling during a measureable storm event on
November 1, 2018 The storm event occurred between approximately 5 00 PM and 5 45 PM on November
1, 2018 Wood personnel performed stormwater sampling of the discharges starting at 517 PM Total
rainfall for this event within a 24-hour period was 0 31 inches as measured at the on -site rain gauge
Rainfall sufficient to produce a measureable discharge was not recorded during the 72 hours prior to this
measurable storm event
Within about 30 minutes of constant measurable discharge the pH of the stormwater was measured with
a calibrated pH meter, and stormwater samples were collected from outfalls OF#2 OF#4, OF#5 and OF#6
The samples were collected after stormwater passed through the installed catch/filter baskets The
samples were marked with an F to indicate the sample was collected post catch basket and is considered
filtered (e g SW-2F) Additionally Wood collected a stormwater sample from OF#2 before passing
through the catch basket The sample was labeled as SW-2 The samples were packed in an ice -chilled
cooler and delivered with chain -of -custody via overnight courier to PRISM Laboratories in Charlotte
North Carolina (a North Carolina -accredited laboratory) for analysis The outfall samples were submitted
for analysis of total suspended solids (TSS) according to Standard Method 2540D and non -polar oil and
grease according to EPA Method 1664B (SGT-HEM)
Field analysis of the stormwater samples indicated pH readings were below the NCDEQ benchmark range
The pH readings ranged from 5 51 at OF#4 and OF#6 to 5 74 at OF#2 Laboratory analytical results
indicated TSS and non -polar oil and grease were below their respective NCDEQ benchmark values The
analytical results for the outfall samples are reported on the attached NCDEQ Semi -Annual Stormwater
Discharge Monitoring Report The laboratory analytical report and Chain of Custody Records are attached
to this report
Qualitative monitoring forms for the outfalls were also completed during sampling and will be provided
under separate cover for inclusion in the site Stormwater Pollution Prevention Plan documentation
2

City of Asheville Fleet Maintenance Building -November 2018 Stormwater Discharge Sampling December 14 2018
Wood Pr41ect 6252-18 0338 06
Discussion and Recommendations
The pH values for the stormwater samples collected during the late 2018 sampling event are below the
NCDEQ benchmark range, however, the values are generally within range of the prior sampling events
Based on the current detected concentrations of TSS and oil and grease the values are in compliance with
the General Permit conditions Oil and grease was detected at a concentration below the benchmark
range in the sample SW-2 collected pre-catch/filter basket and was not detected above the laboratory
method detection limit in the sample collected post filter at the same outfall location The total suspended
solids were also reduced from 71 mg/L to 7 0 mg/L from the samples collected pre and post catch basket
indicating that the catch baskets do appear to provide a reduction in TSS and oil and grease
concentrations Although the concentrations detected in the sample collected at the pre -catch basket
(SW-) were slightly elevated compared to the sample collected post catch basket (SW-2F) the
concentrations detected at both samples are in compliance with the benchmark values contained in the
General Permit
Wood recommends that the following list of requirements for a Tier One response be performed at the
facility in relation to the measurements of pH below the benchmark range
1 Conduct a stormwater management inspection of the facility within two weeks of receiving
sampling results
2 Identify and evaluate possible causes of the benchmark value exceedence
3 Identify potential and select the specific source controls operational controls, or physical
improvements to reduce concentrations of the parameters of concern, or to bring
concentrations to within the benchmark range
4 Implement the selected actions within two months of the inspection
5 Record each instance of a Tier One response in the Stormwater Pollution Prevention Plan
Include the date and value of the benchmark exceedence, the inspection date the personnel
conducting the inspection, the selected actions, and the date the selected actions were
implemented
Based on the preliminary results of an NCDEQ stormwater inspection in early August 2018 and review of
available historical stormwater sampling documentation sampling of outfalls at locations other than OF#2
and OF#6 had not been performed prior to the late 2018 Sampling Event Documentation related to
Representative Outfall Status designation of these historically -sampled outfalls was not available
Wood recommends submitting this documentation of stormwater sampling, along with the attached
Stormwater Discharge Outfall Monitoring Reports to NCDEQ for their files
Wood recommends ongoing cleaning of the catch basket filtration material We note that depending on
availability of the style/model of the current sediment basket filtration material/insert, it might be more
efficient and/or economical to replace the entire unit as needed
Wood recommends continuing sampling of the following outfalls at a measureable storm event in early
2019 OF#2 OF#4, OF#5, and OF#6 Due to the elevation of the drop inlet rim of Outfall OF#3 historic
measurable storm events have not produced discharge at this location The flow in the area of OF#3
Outfall OF#1 receives surface runoff from the employee/visitor parking area which is a non -industrial
area Based on the results of this late 2018 sampling event, and after evaluation of sampling results in
3

City of Asheville Fleet Maintenance Building -November 2018 Stormwater Discharge Sampling December 14, 2018
Wood Project 6252 18-0338 06
early 2019, consideration Can be given to proposing Representative Outfall Status of one or more outfalls
at the site
We appreciate the opportunity to provide water resource services on this project I€ you should have any
questions, or need additional information, please do not hesitate to contact us at [phone]
Sincerely
Wood Environment & Infrastr cture Solutions, Inc
Gregory L Hutchins
Technical Professional R
GLH/MEW mew
Matthew E Wallace, P E
Principal Engineer
Attachments Figure 1 Site Drainage Plan
Laboratory Analytical Report and Chain -of -Custody
NCDEQ Semi -Annual Stormwater Discharge Monitoring Reports
4

P'Racc
�V LABORATORIES INC
Full Service Analytical &
Environmental Solutions
Wood Environ & Infrastructure Inc (Asheville)
Rodney Clark
1308 Patton Avenue (Suite C)
Asheville NC 28806
NC Certification No 402
NC Dunking Water Cert No 37735
SC Certification No 99012
Protect City of Asheville - Fleet Maintenance
Protect No 6252180338
Lab Submittal Date 11/03/2018
Prism Work Order 8110051
Case Narrative
11/13/2018
This data package contains the analytical results for the protect identified above and includes a Case Narrative Sample
Results and Chain of Custody Unless otherwise noted all samples were received in acceptable condition and processed
according to the referenced methods
Data qualifiers are flagged individually on each sample A key reference for the data qualifiers appears at the end of this case
narrative
Please call if you have any questions relating to this analytical report
Respectfully
PRISM LABORATORIES INC
Robbi A Jones
President/Protect Manager
Data Qualifiers Key Reference
Reviewed By Robbi A Jones
President/Project Manager
OG HEM O&G is less than the reporting limit therefore TPH (SGT-HEM) is less than the reporting limit Sample not
extracted for TPH (SGT HEM)
RV Reduced volume filtered due to slow filtering
BRL Below Reporting Limit
MDL Method Detection Limit
RPD Relative Percent Difference
* Results reported to the reporting limit All other results are reported to the MDL with values between MDL and
reporting limit indicated with a J
This report should not be reproduced except in Its entirety without the written consent of Prism Laboratories Inc
449 Springbrook Road P O Box 240543 Charlotte NC 28224-0543
Phone 704152"364 Toll Free Number 1-800/529-6364 Fax [phone] Page 1 of 10

{� I S n /� I Fun e e Rnatyhcat a
r� I V' Env rommam�ntoi Solutions
rweaiuran�ca me
Sample Receipt Summary
11 /13/2018
Prism Work Order 8110051
Client Sample ID
Lab Sample 10
Matrix
Daterrime Sampled
Date/Time Received
SW-2
8110051-01
Water
11/01/18 17 35
11/03/18 10 53
SW-21F
8110051-02
Water
11/01/18 17 25
11/03/18 10 53
SW-0F
8110051 03
Water
11/01/18 17 30
11/03/18 10 53
SW 5F
8110051 04
Water
11/01/18 1723
11/03/18 1053
SW 6F
8110051-05
Water
11/01/18 17 17
11/03/18 10 53
Samples were received in good condition at 3 6 degrees C unless otherwise noted
This report should not be reproduced except in its entirety without the written consent of Prism Laboratones iM
449 Springbrook Road P O Box 240543 Charlotte NC 28224-0543
Phone 704152M364 Toll Free Number 1.800152M364 Fax [phone] Page 2 of 10

Full service Analytical a
Summary of Detections
PRISM I
environmental 9olut—s
11/13/2018
Prism Work Order 8110051
Prism ID Client ID
Parameter
General Method
Method Result Units
8110051-01 SW 2
Oil 8 Grease (SGT HEM)
General Chemistry Parameters
1664B 97 mg1L
8110051-01 SW 2
Total Suspended Solids
General Chemistry Parameters
SM2540 0 71 RV mg1L
8110051-02 SW 2F
Total Suspended Solids
General Chemistry Parameters
SM2540 D 70 mg1L
8110051-03 SW-4F
Total Suspended Sakds
General Chemistry Parameters
SM2540 ❑ 36 mg1L
8110051-04 SW 5F
Total Suspended Solids
General Chemistry Parameters
SM2540 D 10 mg1L
This report should not be reproduced except in Its entirety without the written consent of Prism Laboratones Inc
449 Springbrook Road P O Box 240543 Charlotte NC 28224-0543
Phone [phone] Toll Free Humber 1-8001529-6364 Fax 704f525-0409 Page 3 of 14

s
Full Se"ice RISM I Environmental Solutions
Laboratory Report
1111312018
Wood Environ & Infrastructure Inc (Asheville Protect City of Asheville - Fleet
Attn Rodney Clark Maintenance
1308 Patton Avenue (Suite C) Protect No 6252180338
Asheville NC 28806 Sample Matrix Water
Client Sample ID SW 2
Prism Sample ID 8110051-01
Prism Work Order 8110051
Time Collected 11101/18 17 35
Time Submitted 11103/18 10 53
Parameter Result
Units Report
MDL Dilution
Method Analysis Analyst
Batch
Limit
Factor
DateMme
ID
General Chemistry Parameters
.�
Oil 8 Grease (SGT HEM) 97
mg1L 50
1 1 1
1664B 11/8118 907 SLS
P81(0155
Total Suspended Solids 71 RV
mg1L 12
0 40 1
SM2540 D 1118118 15 03 CBP
P81(0138
This report should not be reproduced except in its entirety without the written consent of Pnsm Laboratones Inc
449 Spnngbrook Road P O Box 240543 Charlotte NC 28224-0543
Phone 704152"364 Toll Free Number 1.8001529.6364 Fax [phone] Page 4 of 10

A
RFull Service AnalyticalR,., �1SrEnvironmental Salutions
onics me
Laboratory Report
11/13/2018
Wood Environ & Infrastructure Inc (Asheville Project City of Asheville Fleet Client Sample ID SW-2F
Attn Rodney Clark Maintenance Prism Sample ID 8110051-02
1308 Patton Avenue (Suite C) Project No 6252180338 Prism Work Order 8110051
Asheville NC 28806 Sample Matrix Water Time Collected 11/01/18 17 25
Time Submitted 11/03/18 10 53
Parameter Result Units Report MDL Dilution Method Analysis Analyst Batch
Limit Factor DateMme ID
General Chemistry Parameters
Oil & Grease (SGT HEM)
Total Suspended Solids
BRL OG mg1L 50
70 mg1L 62
11 1 1664B 11/12/18 917 SLS P81<0210
040 1 SM2540 D 1118118 15 03 CBP P8K0138
This report should not be reproduced except in Its entirety without the wntten consent of Pnsm Laboratories Inc
449 Springbrook Road P O Box 240543 Charlotte NC 28224-0543
Phone [phone] Toll Free Number 1-800/529-0364 Fax [phone] Page 5 of 10

P Full Service Analytical
R ISM
Environmental Solutions
sn<roR.a*wau iw
Wood Environ & Infrastructure Inc (Asheville Project City of Asheville - Fleet
Attn Rodney Clark Maintenance
1308 Patton Avenue (Suite C) Project No 6252180338
Asheville NG 28806 Sample Matrix Water
Laboratory Report
11/13/2018
Client Sample ID SW-4F
Prism Sample ID 8110051-03
Pnsm Work Order 8110051
Time Collected 11/01/18 17 30
Time Submitted 11/03/18 10 53
Parameter Result
Units
Report
MDL Dilution
Method Analysis Analyst
Batch
Limit
Factor
DatelTime
ID
General Chemistry Parameters
Oil 8 Grease (SGT HEM) BRL OG
mg1L
50
1 1 1
1664B 11/12118 9 17 SLS
P8K0210
Total Suspended Solids 36
mglL
62
040 1
SM2540 0 11018 15 03 CBP
P8K013a
This report should not be reproduced except in its entirety wnthout the written consent of Prism Laboratories Inc
449 Springbrook Road P O Box 240543 Charlotte NC 28224-0543
Phone 704152M364 Toll Free Humber 1-8001529-6364 Fax [phone] Page 6 of 10

/h'R
nFull onme Analytical � V � Env vonmertat Solutions
�LADOiUIORIES inc
Wood Environ & Infrastructure Inc (Asheville Project City of Asheville - Fleet
Attn Rodney Clark Maintenance
1308 Patton Avenue (Suite C) Project No 6252180338
Asheville NC 28806 Sample Matrix Water
Laboratory Report
11/13/2018
Client Sample ID SW-5F
Prism Sample ID 8110051-04
Prism Work Order 8110051
Time Collected 11/01/18 17 23
Time Submitted 11/03/18 10 53
Parameter Result
Units Report
MDL DIIU00n
Method Analysis Analyst
Batch
Limit
Factor
DateMme
ID
General Chemistry Parameters
Oil & Grease (SGT HEM) BRL OG
mglL 50
1 1 1
1664B 11/12/18 9 17 SLS
P81<0210
Total Suspended Solids 10
mg1L 25
040 1
`SM2540 D 1118118 15 03 CBP
PBK0138
This report should not be reproduced except in its entirety unthout the written consent of Prism Laboratories Inc
449 Springbraok Road P O Box 240543 Charlotte NC 28224-0543
Phone [phone] Toll Free Number 1-8001529-6364 Fax [phone] Page 7 of 10

NFull
So ICe /1.1!�R,R ISM
I Environmental Saluttona
Laboratory Report
11/1312018
Wood Environ & Infrastructure Inc (Asheville Project City of Asheville - Fleet
Client Sample ID SW-6F
Attn Rodney Clark
Maintenance
Prism Sample ID 8110051-05
1308 Patton Avenue (Suite C)
Project No 6252180338
Prism Work Order 8110051
Asheville NC 28806
Sample Matrix Water
Time Collected 11/01/18 17 17
Time Submitted 11/03/18 10 53
Parameter
Result Units Report
MDL Dilution Method Analysis Analyst Batch
Limit
Factor Datemme ID
General Chemistry Parameters
Oil & Grease (SGT HEM)
BRL OG mg/L 50
1 1 1 1664E 11/12/18 9 17 SLS PSK0210
Total Suspended Solids
BRL mg1L 33
040 1 SM2540 D 1118118 15 03 CBP PBK0138
This report should not be reproduced except in its entirety without the written consent of Prism Laboratories Inc
449 Springbrook Road P 0 Box 240543 Charlotte NC 28224-0543
Phone [phone] Toll Free Number 1.8001529-6364 Fax [phone]
Page 8 of 10

e4fiPRI n n Full onmen An nlutl s
I V I Jwnnironrn©ntal Salutipn9
Wood Environ & Infrastructure Inc (Asheville Project City of Asheville Fleet
Attn Rodney Clark Maintenance
1308 Patton Avenue (Suite C) Project No 6252180338
Asheville NC 28806
General Chemistry Parameters Quality Control
Level II QC Report
11/13/18
Prism Work Order 8110051
Time Submitted 11/3/2018 10 53 00AM
Reporting Spike Source %REC RP❑
Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes
Batch P8K0138 NO PREP
Blank (P8K0138 BLKi) Prepared & Analyzed 11/08/18
Total Suspended Solids BRL so mg/L
LCS (P8K0138 BSI) Prepared & Analyzed 11108/18
Total Suspended Solids 470 50 mglL 4770 99 90 110
Batch P8K0155 - NO PREP
Blank (PSK0155 SLKII
Oil & Grease (SGT HEM)
BRL 50 ni
Prepared & Analyzed 11/08/18
LCS (P8K0155 BS1) Prepared & Analyzed 11/08/18
Oil & Grease (SGT HEM) 144 50 mg/L 2000 72 64 132
Batch P8K0210 - NO PREP
Blank (PSK0210 BLKII) Prepared & Analyzed 11/12/18
Oil & Grease (SGT HEM) BRL 50 mg/L
This report should not be reproduced except in its entirety without the wntter consent of Prism Laboratories Inc
449 Springbrook Road P O Box 240543 Charlotte NC 28224-0543
Phone 704152M364 Toll Free number 1-800i5 M364 Fax [phone] Page 9 of 10

CHAIN OF CUSTODY RECORD
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Semi-annual Stormwater Discharge Monitoring Report
for North Carolina Division of Water Resources General Permit No NCGO80000
Date submitted December 14 2018
CERTIFICATE OF COVERAGE NO NCG08 0 6 8 2
FACILITY NAME City of Asheville Fleet maintenance .--. ._.- ._..
COUNTY Buncombe
PERSON COLLECTING SAMPLES Rodney clarldGreg Hutchins (wood)
LABORATORYpnsmLaboratones Inc Lab Cert # 402
Comments on sample collection or analysis
Samples *Aactad on November 2 2018 reported on separate OMR, represent late 2018 Maasuratle storm evani not available
SAMPLE COLLECTION YEAR 2018
SAMPLE PERIOD ❑ Jan -June❑ July -Dec
or ❑ Monthly' (month)
DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
❑Zero -flaw [:]WaterSupply []SA
Mother Class B
PLEASE REMEMBER TO SIGN ON THE REVERSE: -3
Did this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per monthP 7 yes ❑no
(if yes, report your analytical results in the table immediately below)
Part A Vehicle Maintenance Areas Monitoring Requirements (If applicable)
Q No dischorge this period'
Qutfall
No
IDate t
tsar poe Collected,
mo/dd/yr
OOS30
00400
00556
Total Suspended
Solids, rrig/L,
pH,
Standard units
Non -Polar Oil and,Grease/TPH EPA
Method 1664 (SGT-HEM), mg/L
New Motor Oil Usage,
Annual average gal/mo
Benchmark
-
50 or 100 see permit
Within 6 0 — 9 0
15
-
550
I
I
Part B Oil/water Separators and Secondary Containment Areas at Petroleum Bulk Stations and Terminals (If applicable)
I
Outfall
No
iDate
Sample,Collected, l
Imo/dd/yr
00556
00530
00400
Non -Polar Oil and Grease/TPH'EPA Method
1664 (SGT-HEM), mg/L
Total Suspended Solids,
mg/c
pH,
Standard units
Permit Limit
-
15
E 50 or 100 see permit
6 0 — 9 0
I For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here
SWU-2a0 last ri-visf.d April 11 2013
Page, I of 2

Environmertal
Quality
Stormwater Discharge Out -fall (SDO)
Qualitative Monitoring Report
For guidance on f Iling out this forrn, please visit https //deq nc govlabout/divisionslenergy-minerai land -resources/
npdes stormwater-gps
Permit No NICI610 l6101010161 or Certificate of Coverage No NICIGIOI'FI016'131Z1
Facility Name 64!* aff F/Z�,e4 p_ Rom, ,1,2f
County Phone No 8Z$ - 2-511- 5 ors 7
• - � ,u�j��ll n
Date of Inspection v i 1 / It `-
Time of Inspection
Total Event Precipitation (inches) C/
All permits require qualitative monitoring to be performed during a "measurable storm event "
A "measurable storm event' is a storm event that results in an actual discharge from the permitted site
outfall The previous measurable storm event Faust have been at least 72 hours prior The 72-hour storm
interval does not apply if the pennittee is able to document that a shorter interval is representative for
local storm events dunng the sampling period, and the permittee obtains approval from the local DEMLR
Regional Office
By this signature,_Lqqrtify,Oat this report is accyrdf rid complete to the best of my knowledge
(Signature of
I Outfall Description
Outfall No -5u,/ Structure (pipe, ditch, e`c)il'��
Receiving Stream
lam....-.. C3 r-Q/'+C/—
Describe the industrial activities that occur within the outfall drainage area
Vim!_ . e-,. (Q— � %,- '' - -�' C--Q
Page 1 of 2
S WU 242, Last modified 06101P2018

2 Color Describe the color of the discharge using basic colors (red, brown, blue, etc) and tint
(light, medium, dark) as descriptors W—rin (� 7, l � � � o rAl .. `t�� c_ L 0i _
3 Odor Describe any distinct odors that the discharge may have (n e , smells strongly of oil, weak
chlorine odor, etc) VN r5 ^Q
4 Clarity Choose the number which best describes the clanty of the discharge, where 1 is clear
and 5 is very cloudy
(13 2 3 4 5
5 Floating Solids Choose the number which best describes the amount of floating solids in the
stormwater discharge, where 1 is no solids and 5 is the surface covered with floating solids
i
0 2 3 4 5 I
t
t
6 Suspended Solids Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where I is no solids and 5 is extremely muddy-
2 3 4 5 ;
7 Is there any foam in the stormwater discharge9 o Yes
8 Is there an oil sheen in the stormwater discharge? oYes 9-T10
9 Is there evidence of erosion or deposition at the outfal19 o Yes o
10 Othet Obvious Indicators of Stormwater Pollution
List and describe A/
Dote Low clarity, high solids, and/or the presence of foam, oil sheets, or erosion/deposition maybe
indicative of pollutant exposure These conditions warrant further investigation
Page 2 of 2
SWU-242 Last modified06/01/2018

r
Envlranrtentoi
QW&Y
Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on fiIlang out this form please vtstt https lldeq ne gov/aboutldrvlsionsienergy-mineral-land resources/
npdes stormwater-gps
PermitNo NICIGIO 1S IO/OIO1G1 or Certificate of Coverage ho N1C/GICjlg-lO/C181Z1
Facility Name 6-1!,. or As6,��j � , ,.,e,, ,,- e _ �t�.� �.
County "' c:-- Phone No
Inspector i, (��(c.f -- W0- -A- 2z Z S
Date of Inspection r if f t %I g
Time ofInspechon )-7- . (1
Total Event Precipitation (inches)
All permits require qualitative monitoring to be performed during a "measurable storm event "
A "measurable storm event" is a storm event that results in an actual discharge from the permuted site
outfall The previous measurable storm event must have been at least 72 hours prior The 72-hour storm
interval does not apply if the permittee is able to document that a shorter interval is representative for
local storm events during the sampling penod, and the permittee obtains approval from the local DEMLR
Regional Office
By this signature, I c3 that th)* report is aguraJp and complete to the best of my knowledge
(Signature of
1 Outfall Description /
Outfall ho lJ-3 Structure (pipe, ditch, etc) !� -
Receiving Stream
Describe the industrial activities that occur within the outfall drainage area
Page 1 of 2
M 242 Last modcfied 06/01/2018

2 Color Describe the color of the discharge using basic colors (red, brown, blue, etc ) and tint
(light, medium, dark) as descriptors tJ 4^- _
3 Odor Describe any distinct odors that the discharge may have (1 e , smells strongly of oil, weak
chlorine odor, etc ) N /A
4 Clarity Choose the number which best desenbes the clarity of the discharge, where 1 is clear
and 5 is very cloudy
NA 1 2 3 4 5
5 Floating Solids Choose the number which best describes the amount of floating solids in the
stormwater discharge, where 1 is no solids and 5 is the surface covered with floating solids
A.)/A' 1 2 3 4 5
6 Suspended Solids Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where 1 is no solids and 5 is extremely muddy
f A 1 2 3 4 5
7 Is there any foam to the stormwater discharge? Q Yes A No AZ^- _
8 Is there an oil sheen in the stormwater discharge? OYes O No N/'L1
9 is there evidence of erosion or deposition at the outfa117 O Yes O No tJIA
10 Other Obvious Indicators of Storinwater Pollution
List and describe AAA c�� S�icxrg-? 5 C"— 3
Note Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition may be
indicative of pollutant exposure These conditions %arrant further investigation
Page 2 of 2
5WU 242 Last mochtied 06/0112018

Enietronmen ral
Quallty
Stormwater Discharge OWAH (SDO)
Qualitative Monitoring Report
Forguzdanee on fzlling out this form please vurt https l/deq no gov/about/diviszons/energy mineral -land -resources)
npdes stormwater-gps
Permit No NICIG/D 16IO1©IG1G1 or Certificate of Coverage -No NICIGICIFIOIG19101
Facility Name 6-A or �i5�vi t rr� � � � l!�! n—FE:� I, a rx n C E , , , i i n �
County E.^ca, -- _ Phone Vo 8�$ - Z5_ R 5 oo - �`—
Inspector kw, is -9c_ -
Date of Inspection j 1 I a
Time of Inspection
Total Event Precipitation (inches) 41-D -3 t
All permits require qualitative monitonng to be performed during a "measurable storm event "
A "measurable storm event" is a storm event that results in an actual discharge from the permitted site
outfall The previous measurable storm event must have been at least 72 hours pnor The 72-hour storm
interval does not apply if the permittee is able to document that a shorter interval is representative for
local storm events during the sampling period, and the permittee obtains approval from the local DEMLR
Regional Office
By this signature, I cprpTy that this report is accu_;AfF an¢ wrnpletc to the best of tray knowledge
(Signature of
1 Outfall Descri tion
Outfall No Slt1- Structure (pipe, ditch, etc
Receiving Stream
Desenbe the industrial activities that occur withm the outfall drainage area
V�L t C' cx,...4 G -- Q r
Page 1 of 2
SWU 242 Lost modified 06/0 IM 18

2 Color Desr rtbe the color of the discharge using basic colors (red, brown, blue, etc) and tint
(light, medium, dark) as descriptors V erq,— Is Ai, { 6re7 t..r_.^ 4,,
3 Odor Describe any distinct odors that the discharge may have (i c , smells strongly of oil, weak
chlorine odor, etc ) n 0 /1Q
4 Clarity Choose the number which best desenbes the clarity of the discharge, where 1 is clear
and 5 is very cloudy �
6/2 3 4 5
5 Floating Solids Choose the number which best describes the amount of floating solids in the
stormwater discharge, where I is no solids and 5 is the surface covered with floating solids
( 1 J 2 3 4 5
6 Suspended Solids Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where 1 is no solids and 5 is extremely muddy
2 3 4 5
7 Is there any foam in the stormwater discharge? Q Yes WK
8 Is there an oil sheen in the stormwater discharge? OYes 9"
9 Is there evidence of erosion or deposition at the outfalP O Yes ZN
IO Other Obvious Indicators of Stormv,ater Pollution
List and describe
Note Low clarity, high solids, and/or the presence of foam, oil sheen, or erosionldeposition may be
indicative of pollutant exposure These conditions warrant further investigation
Page 2 of 2
SWU 242 Last modified 06/01/2018

cmronmentat
Quali y
Stormwater Discharge Outfall (SDO)
Quahtative Monitoring Report
For guidance on filling out this form, please wya https 11deq ac govlabout/divisions/energy-mtneral-land-resources/
npdes stormwater-gps
Permit No NICIG /IJ 1610/010101 or Certificate of Coverage No N1C1G1 c-)1& 1 1C1d IZl
Facility Name Cry at=' % 5 � f �� - �Q -� f"�1141 inC'x n 4f7- $u 11 d I n,
County 1�c�r s_� •-. 6 � Phone No 8Z 9 r ?_5R - S�0r _� ^
Inspector IZ140- r 1Ez,T-5
Date of Inspection r 1
Time of Inspechon
Total Event Precipitation (inches) 031
All permits require qualitative monitoring to be performed during a "measurable storm event "
A "measurable storm event" is a storm event that results in an actual discharge from the permitted site
outfall Tlieprevious measurable stores event must have been at least 72 hours prior The 72-hour storm
interval does not apply if the pennittee is able to document that a shorter interval is representative for
local storm events during the sampling penod, and the permittee obtains approval from the local DEMLR
Regional Office
By this sigiat�p,-J7certify that this report is aQe1r&p and gomplete to the best of my knowledge
(Signature of
F Outfall Description
Outfall No 5W- Structure (pipe, ditch, etc) VA142 -2:� &t
Receiving Stream /
Descnbe the industrial activities that occur within the outfall drainage area
Page 1 of 2
swU 242 Last modefled %/0112018

2 Color Describe the color of the discharge using basic colois red, brown, blue, etc ) and tint
(light, medium, dark) as descriptors
3 Odor Descnbe any distinct odors that the discharge may have (i e , smells strongly of oil, weak
chlorine odor, etc ) x,-,, 0 er-a' _
4 Clai ity Choose the number which best describes the clarity of the discharge, where I is clear
and 5 is very cloudy
1 02 3 4 5
5 Floating Solids Choose the number which best describes the amount of floating solids in the
stormwater discharge, where 1 is no solids and 5 is the surface covered with floating solids
1 2 3 4 5
G Suspended Solids Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where I is no solids and 5 is extremely muddy
CI 2 3 4 5
7 Is there any foam m the stormwater discharge`? Q Yes 0-No
8 Is there an oil sheen in the stormwater discharge? oYes 0No
9 Is there evidence of erosion or deposition at the outfall? Q Yes (;O
10 Other Obvious Indicators of Storrnnater Pollution
List and describe
Note Low clarity, high solids, and/or the presence of foam, oil sheen, or erosionldeposition may be
indicative of pollutant exposure 'these conditions warrant further investigation
Page 2 of 2
5WU 242 Last modified 06/0 2018

Environmental
Qualky
Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on f Ming out this form, please visit httpsJ/deq ne gov/about/divxsions/tnergy-mineral-land resources/
npdes-stormwater-gps
Permtt No NIC1610 l:5 101010161 or Certificate of Coverage No NICIGIOIR IO161 S 101
Facility Name Creir �%- r/54 aun-l^y kan ^c $ ►n�
County .,CO- rr J— Phone No 8Za - 2-5_ q --S-;2C3
Inspector -- W.".L E ZT-s r
Date of Inspection Y 11
Time of Inspection 1 7
E-
Total Event Precipitation (inches) 031
All permits require qualitative monitoring to be performed during a "measurable storm event "
A "measurable storm event" is a storm event that results to an actual discharge from the permitted site
outfall The previous measurable storm event must have been at least 72 hours prior The 72-hout storm
Interval does not apply if the permittee is able to document that a shorter Interval is representative for
local storm events during the sampling period, and the permittee obtains approval from the local DEMLR
Regional Office
By this signet , certify that this report is accurate and complete to the best of my knowledge
(Signatm
l Outfall Description
Outfall No 5- J - 2- Structure (pipe, ditch, etc } V,-,, n I
Receiving Streams
Tom. r 10 t -
Describe the industrial activities that occur wwithin the outfall drainage area
-- V 2 t,% , C- f C-? &na=o - 0..vr C,--
Page 1 of 2
SWU 242 Last modified 06/01/2019

2 Color Desenbe the color of the discharge using basic colors (red, brown, blue, etc ) and tint
(light, medium, dark) as descriptors ^ �,/� (�,� ��'�. L4 —tin C "-" r-
3 Odor Descnbe any distinct odors that the discharge may have (i e , smells strongly of oil, weak
chlorine odor, etc) _ rl e n P
4 CIarity Choose the number which best describes the clarity of the discharge, where l is clear
and 5 is very cloudy
V 2 3 4 5
5 Floating Solids Choose the number which best describes the amount of floating solids in the
stormwater discharge, where 1 is no solids and 5 is the surface covered with floating solids
0 2 3 4 5
6 Suspended Solids Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where I is no solids and 5 is extremely muddy
Di 2 3 4 5
7 Is there any foam in the stormwater discharge? 0 Yes /No
S Is there an oil sheen in the stormwater discharge9 475Yes Q No �Q �?„o c rcQrsC�Ctrr�
9 Is there evidence of erosion or deposition at the outfal19 0 Yes /-No
10 Other Obvious Indicators of Stormwater Pollution
List and describe
Note Low clarity, high solids, and/or the presence of foam, oil sheen, or erosiouldeposition maybe
indicative of pollutant exposure I hese conditions A arrant further investigation
Page 2 of 2
a
sWU-242 LdstawdiftcdM01/2018

r
August 20 2018
Mr James Castle
Fleet Manager
City of Asheville
P 0 Box 7148
Asheville, North Carolina 28802
RECEIVED
AUG 2 4 2018
CENT kAL FILES
DWR SECTION
Subject Report of July 2018 Stormwater Discharge Sampling
City of Asheville Fleet Maintenance Building
173 South Charlotte Street
Asheville North Carolina
Wood Project 6252-18 0338 06
Dear Mr Castle
Wood Environment & Infrastructure Solutions, Inc (Wood) is pleased to submit this Report of July 2018
Stormwater Discharge Sampling for the City of Asheville Fleet Maintenance Building located on South
Charlotte Street in Asheville, North Carolina This sampling was performed to comply with requirements
contained in the General Permit for Stormwater Discharge (Permit NCGO80000 with an original effective
date of November 1, 2012 reissued on November 16, 2017 and expiring October 31 2018) issued by the
North Carolina Department of Environment and Natural Resources now the North Carolina Department
of Environmental Quality (NCDEQ) City of Asheville s certificate of coverage under this permit is
NCGO80682
Background Information
Two historically -sampled stormwater outfalls are located at the site, SW-1 and SW-2 as shown on the
attached Figure 1 These two outfalls discharge directly into Town Branch (also [mown as Nasty Branch),
which is enclosed beneath the site and daylights approximately 1,500 feet to the southwest of the site
Sample location SW-1 is located at drop inlet DI#6, and sample location SW-2 is located at drop inlet
DI#2 Water samples are collected from the water flowing into the drop inlets from the surrounding paved
areas
There are an additional flour drainage basin drop inlets which discharge into the two historically -sampled
drop inlets The northwest drop inlet DI#3, receives surface runoff as well as a pipe discharge from the
northern off -site City public works facility prior to discharging into drop inlet D1#2 Drop inlet DI#1
located to the east of the site building in the employee parking lot, is not exposed to vehicle
maintenance/industrial activities and also discharges into drop inlet DI#2 The discharge of drop inlet
D144 located to the west of the site building is not precisely known, but is suspected to discharge to the
east into Town Branch, which is enclosed beneath the site Drop inlet DI#5 located to the southwest of
the site building, discharges into drop inlet DI#6
Correspondence
Wood Environment & Infrastructure Solutions Inc
1308 Patton Avenue
Asheville North Carolina 28806
Tel [phone]

City of Asheville Fleet Maintenance Building — July 2018 Stormwater Discharge Sampling August 20 20I8
Wood Project 6252-18-0338 06
A water quality classification is not listed for Town Branch on the NCDEQ Surface Water Classification
website/map Town Branch's confluence with the French Broad River is approximately 7,000 feet to the
southwest of the site According to NCDEQ s water quality classification of the French Broad River at the
confluence with Town Branch (a Classification B), the French Broad River is not currently classified as the
following sensitive receiving waters Outstanding Resource Waters, High Quality Waters Primary Nursery
Areas and Trout Waters Therefore, the more protective benchmark value listed in the General Permit for
total suspended solids (50mg/L) does not apply to stormwater discharges at the site — the applicable
benchmark value for total suspended solids is 100 mg/L
A rain gauge is present at the site approximately six feet above ground in an open area at a distance of at
least twice the height of surrounding structures
Early 2018 Stormwater Sampling Activities
Because of frequent storm events in May and June, opportunities for a measureable storm event with a
preceeding 72-hour dry period were limited Wood mobilized once to the site in the month of June,
however a measureable storm event did not materialize Other measureable storm events were outside of
the facility's normal operating hours
Based on the lack of measureable storm events in the later portion of the early 2018 permit sampling
period (Period 1), Wood recommended, and performed sampling at the first measureable storm event in
July This storm event, with sampling activities described below, is considered to be representative of the
early 2018 permit sampling period, however, a NCDEQ Semi -Annual Stormwater Discharge Monitoring
Report with an indicated no discharge for the early 2018 period is attached
Wood recommends performing a second sampling event at least 60 days after the July 2018 sampling
event, but before October 31 2018 This sampling event will be considered to represent Period 2 of the
2018 permitting year
July 2018 Stormwater Sampling Activities
Wood personnel were onsite to perform stormwater sampling during a measureable storm event on July
6, 2018 The storm event occurred between approximately 145 PM and 2 25 PM on July 6, 2018 Wood
personnel performed stormwater sampling of the discharges starting at 2 05 PM Total rainfall for this
event within a 24-hour period was 0 20 inches as measured at the on -site rain gauge Rainfall sufficient to
produce a measureable discharge was not recorded during the 72 hours prior to th;s measurable storm
event
Within about 30 minutes of constant measurable discharge, the pH of the stormwater was measured with
a calibrated pH meter and stormwater samples were collected from the historic SW-2 location
(designated for this event as OF-1) and the historic SW-1 location (designated as OF-2 for this event) The
samples were packed in an ice -chilled cooler and delivered with chain -of -custody via overnight courier to
Environmental Science Corporation in Mt Juliet, Tennessee (a North Carolina -accredited laboratory) for
analysis The outfall samples were submitted for analysis of total suspended solids (TSS) according to
Standard Method 2540D and non -polar oil and grease according to EPA Method 1664B (SGT-HEM)
2

City of Asheville Fleet Maintenonce Building — July 2018 .stormwater Discharge Sampling August 20 2018
Wood Project 6252 18-0338 06
Field analysis of the stormwater samples indicated pH readings were at the lower end, or just below, the
NCDEQ benchmark range The pH reading was S79 at SW-1 and 602 at SW-2 Laboratory analytical
results indicated TSS and non -polar oil and grease were below their respective NCDEQ benchmark values
The analytical results for the outfall samples are reported on the attached NCDEQ Semi -Annual
Stormwater Discharge Monitoring Report The laboratory analytical report and Chain of Custody Records
are attached to this report
Qualitative monitoring forms for the outfalls were also completed during sampling and will be provided
under separate cover for inclusion in the site Stormwater Pollution Prevention Plan documentation
Discussion and Recommendations
The pH value for SW-1 was generally slightly lower than or similar to concentrations that have been
previously detected and reported Based on the current detected concentrations of TSS and oil and
grease, the values are in compliance with the General Permit conditions
Wood recommends that the following list of requirements for a Tier One response be performed at the
facility in relation to the measurement of pH below the benchmark range in the sample collected at SW-1
(drop inlet DI#6)
1 Conduct a Stormwater management inspection of the facility within two weeks of receiving
sampling results
2 Identify and evaluate possible causes of the benchmark value exceedence
3 Identify potential and select the specific source controls, operational controls or physical
improvements to reduce Concentrations of the parameters of concern or to bring
concentrations to within the benchmark range
4 Implement the selected actions within two months of the inspection
5 Record each instance of a Tier One response in the Stormwater Pollution Prevention Plan
Include the date and value of the benchmark exceedence the inspection date, the personnel
conducting the inspection, the selected actions, and the date the selected actions were
implemented
Based on the preliminary results of an NCDEQ stormwater inspection in early August 2018 and review of
available historical stormwater sampling documentation, sampling of drop inlets/outfalls at locations
other than SW-1 and SW-2 has not been performed Documentation related to Representative Outfall
Status designation of these historically -sampled outfalls was also not available
Wood recommends submitting this documentation of stormwater sampling along with the attached
Stormwater Discharge Outfall Monitoring Report to NCDEQ for their files
Wood recommends replacement of the sediment basket filtration material at least in locations DI#2 and
Dl#6 Dunng sampling it was noted that the basket filtration material was effectively clogged The
condition of the sediment basket material is likely similar at the other site drop inlets We note that
depending an availability of the style/model of the current sediment basket filtration material/insert, it
might be more efficient and/or economical to replace the entire unit with another drop inlet filtration
model/device
3

City of Asheville Fleet Mauntenance Building —July 2013 Stormwater Discharge Sampling August 20 2018
Wood Project 62S218-0338 06
Wood recommends sampling the following drop inlets/outfalls at the next measureable storm event prior
to October 31, 2018 (second permit Period of 2018) DI#2, DI#4, DI#5, and DI#6 Drop inlet DI#3 receives
surface runoff from off -site, which is not representative of the on -site industrial activity Drop inlet DI#1
receives surface runoff from the employee/visitor parking area, which is a non -industrial area When
sampling of these other drop tnlets/outfalls is complete and the data are evaluated, consideration can be
given to proposing Representative Outfall Status of one or more outfalls, and a description of the above
non -industrial Stormwater discharges can be described and included in the Representative Outfall Status
request to NCDEQ
Wood recommends renewing the City of Asheville Fleet Maintenance Certificate of Coverage under the
General Permit for Stormwater Discharge which expires on October 31 2018 NCDEQ should send
renewal instructions/procedures by mail Wood recommends reviewing the renewed General Permit for
potential changes in sampling (and other) requirements
We appreciate the opportunity to provide water resource services on this project If you should have any
questions, or need additional information, please do not hesitate to contact us at [phone]
Sincerely
Wood Environment & infrastructure Solutions Inc
Greg ry L Hutc rr
Technical Professional H
GLFI/MEW mew
Matthew E Wallace, P E
Principal Engineer
Attachments Figure 1 Site Drainage Plan
Laboratory Analytical Report and Chain -of -Custody
NCDEQ Semi Annual Stormwater Discharge Monitoring Reports
4

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14;
� r��_al"
,� � � ,.� ,� s����°�• i� � ���? � Drop Inlet Location
Subject Property
Ki's " FCC' �L� A•� i� rn w �� r�y� � t _�i.
Site Drainage Plan 1 9�� 0 ao 80
City Asheville Fleet Feet
Maintenance Building Figure 1 Drawn BY GLli 8120118
wood. Asheville North Carolina Prorect 6252180338 06 Approved By MEW 8120118

t�
PRISM
LABORATORIES INC.
i Full Service Analytical &
i Environmental Solutions
Wood Environ & Infrastructure Inc (Asheville)
Greg Hutchins
1308 Patton Avenue (Suite C)
Asheville NC 28806
NC Certification No 402
NC Drinking Water Cart No 37735
SC Certification No 99012
Project City of Asheville - Fleet Maintenance
Project No 6252180338-06
Lab Submittal Date 07/07/2018
Prism Work Order 8070070
Case Narrative
07/13/2018
This data package contains the analytical results for the project Identified above and Includes a Case Narrative Sample
Results and Chain of Custody Unless otherwise noted all samples were received in acceptable condition and processed
according to the referenced methods
Data qualifiers are flagged individually on each sample A key reference for the data qualifiers appears at the end of this case
narrative
Please call if you have any questions relating to this analytical report
Respectfully
PRISM LABORATORIES INC
Robbi A Jones
President/Project Manager
Data Qualifiers Key Reference
Reviewed By Rohbi A Jones
President[Project Manager
OG HEM O&G is less than the reporting limit therefore TPH (SGT HEM) is less than the reporting limit Sample not
extracted for TPH (SGT-HEM)
BRL Below Reporting Limit
MDL Method Detection Limit
RPD Relative Percent Difference
Results reported to the reporting limit All other results are reported to the MDL with values between MDL and
reporting limit indicated with a J
This report should not he reproduced except in its entirely without the written consent of Pr:sm Laboratories Inc
449 Springbrook Road P D Box 240543 Charlotte NC 28224 0543
Phone [phone] Toll Free Number 1-8001529 6364 Fax [phone] Page 1 of 7

n n Iv ` ee Analytical &
EnvvrDnmental Solutions uL
Sample Receipt Summary
07/13/201 B
Prism Work Order 8070070
Client Sample ID
Lab Sample ID
Matrix
DaterFime Sampled
Dateffime Received
OF 1
OF 2
8070070-01
8070070-02
Water
Water
07/06/18 14 15
07/06/18 14 05
071071i8 11 30
07/07118 11 30
Samples were received in good condition at 4 6 degrees C unless otherwise noted
This report should not be reproduced except in its entirety without the written consent of Prism Laboratones tnc
449 Spnngtyr00% Road P O Box 240543 Charlotte NC 28224 0543
Phone [phone] Toll Free Number 1A001529 6364 Fax [phone] Page 2 of 7

FulIScmccAnalytical ♦4 Summary of Detections
1-:PEnvironmental Solutions 0711312019
ueoaa onies, u.c.
Prism Work Order 8070070
Pnsm ID Client ID Parameter General Method Method Result Units
8070070-01 OF 1 Total Suspended Solids General Chemistry Parameters
8070070 02 OF 2 Total Suspended Solids General Chemistry Parameters
SM2540 D 82 mg1L
SM2540 0 28 mg1L
This report should not be reproduced except in Its entirety without the written consent of Pnsm Laboratories Inc
449 Springbrook Road P 0 Box 240543 Charlotte NC 28224 0543
Phone [phone] Toll Free Number 1-8001529 6364 Fax 7D41525 0409 Page 3 of 7

;' Laboratory Report
P_ R i S M Null rS�rviceonmen Analytical 8
Environmental Solutions 0]1131201 $
-- - --= fueeRcronica e.e
Wood Environ & Infrastructure Inc (Asheville Project City of Asheville - Fleet Client Sample ID OF-1 I SW-2 location
Attn Greg Hulchins Maintenance Prism Sample ID 8070070-01
1308 Patton Avenue (Suite C) Project No 6252180338-06 Pnsm Work Order 8070070
Asheville NC 28806 Sample Matrix Water Time Collected 07/06118 14 15
Time Submitted 07107/18 11 30
Parameter Result
Units Report
Limit
MDL Dilution Method Analysis Analyst
Factor DateRme
Batch
ID
General Chemistry Parameters
Oil & Grease (SGT HEM) SRL OG
Total Suspended Solids a 2
MA 50
mg/L 2 5
1 1 1 1664B 7110118 11 18 SLS
0 40 1 SM2540 D 7112118 13 10 GSP
P8Ga132
P8GO184
This report should not be reproduced except in its entirety without the written consent of Pnsm Laboratories Inc
449 Sprtngbrook Road P 0 Box 240543 Charlotte NC 28224 0543
Phone [phone] Toll Free Number 1-8001529 6364 Fax [phone]
Page 4 pf 7

P R f S M I Full Se"Ite men An5lybcal s
Env�ronmenial $olut�ona
-2 uaoason
Wood Envlron & Infrastructure Inc (Asheville Project City of Asheville Fleet
Attn Greg Hutchins Maintenance
1308 Patton Avenue (Suite C) Project No 6252180338-06
Asheville NC 28806 Sample Matrix Water
Laboratory Report
07113/2018
SW-1 location
Client Sample ID OF-2
Prism Sample ID 8070070-02
Prism Work Order 8070070
Time Collected 07106/18 14 05
Time Submitted 07/07/18 11 30
Parameter Result
Units Report
MOL Dtlubon
Method Analysis Analyst
Satch
Limit
Factor
DatelTime
ID
General Chemistry Parameters
041 & Grease (SGT HEM) BRL OG
mglL so
1 1 1
1664B 7110118 11 18 SLS
PSGO132
Total Suspended Solids 28
mg1L 25
040 1
SM2540 0 7112118 13 10 CEP
P8GO184
This report should not be reproduced except In its entirety uvnthout the written consent of Prism Laboratories Inc
449 Springbrook Road P O Sox 240543 Charlotte NC 28224 0543
Phone [phone] Toll Free Number 1-8001529.6364 Fax 704152S O409 Page 5 of 7

�dr ,
P R! S M Full oninee al aalluti i s
r Envvonmpntal on
Nc
Level II QC Report
7/13/18
Wood Environ & Infrastructure Inc (Asheville Project City of Asheville - Fleet Prism Work Order 8070070
Attn Greg Hutchins Maintenance Time Submitted 7/7/2018 11 30 OOAM
1308 Patton Avenue (Suite C) Project No 625218033M6
Asheville NC 28806
General Chemistry Parameters Quality Control
Reporung Spike Source %REG RPD
Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes
Batch P8GO132 NO PREP
Blank (PBG0132 BLK1) Prepared & Analyzed 07/10/18
Oil & Grease (SGT HEM) BRL 50 mglL
Batch P8G0184 -NO PREP
Blank (P8Go184BLK1) Prepared&Analyzed 0711211E
Total Suspended Solids BRL 50 mg/L
LCS (PSG0184 BS1) Prepared &Analyzed 07/12J18
Total Suspended Solids 480 50 mrlL 4770 101 90 110
This report should not be reproduced except in its entirety without the written consent of Prism Laboratories Inc
449 Springbrook Road P 0 Box 240543 Charlotte NC 28224 0543
Phone 704152M364 Toll Free Number 1-8001529 6364 Fax [phone]
Page 6 of 7

e PRISM
1 LA6nHAWHIC , MC
Full -Service Ane[ytical &
Environmental Solutions
449 Springbrook Road Charlotte NC 78217
Phone [phone] Fax [phone]
Client Company Name D ti. y 3
Report To/Contact Name y1-k�
Reporting Address
s 4., 110- NG 2
GRAIN OF CUSTODY RECORD
PAGI<j OF �r CITE #TO ENSURE PROPER BILLING
Project Name �(�� -ec4 Mn 44 r.w..-C. _
Short Mold Analysts (Yes) (No) UST Protect (Yes) (NO)
"Please ATTACH any project specific reporting (QC LEVEL I [I III IV}
. - slons andlor QC Requirements
Invoice To
Address
ITT M i
4, Samples INTACT upon arrival?
,Received ON WET ICE?w
riPROPER PRESERVATIVES indicated?
FtCcorved WITHIN HOLDING TIMES?
CUSTODY SEALS INTACT? i "
I
VOLATILCS rec d WIOUT HEADS PACE?
PROPERrCONIAINER9ed?' 1i
TEMP <Therm It7 . � usObserved
V
2% NO = N!A
-6z-co
-
A
a
Phone Fax (Yes) (No}
Email Address r or, W f cL -5 w
EDD Type POF cc _other
Site Location Name (fO 4 - r('4 �_/1�1
Site Location Physical Address
Purchase Order No /Billie Reference , 0�1O
g Y 8 G
`"ti Requested Due Date 0 1 Day 0 2 bays O 3 Days ❑ 4 Days 0 5 Days
Working Days Q 6-9 Days Standard 10 days O Po-Approvedruhwok Must Be
e.s�Lvr� Samples tecelved alter 14 DO will be processed next business day
Turnaround tame is based an business days excluding weekends and holidays �r
(SEE REVERSE FOR TERMS & CONDITIONS REGARDING SERVICES �4
RENDERED BY PRISM LABORATORIES INC TC CLIENT)
TO BE FILLED IN 8Y CL[ENTlSAMPLING PERSONNEL
Certlfleation NELAC DOD FL NC
SC OTHER NIA
Water- Chlorinated YES NO
Sample Iced Upon Collection YE NO
CLIENT
SAMPLE DESCRIPTION
DATE
COLLECTED
TIME
COLLECTED
MILITARY
HOURS
MATRIX
(SO}L
WATER OR
SLUDGE)
SAMPLE CONTAINER
PRESERVA
T1VES
NA LY IS REQUESTED
v+yt ! ,� REMARKS
/ �� q �� /
11—�(r L�we�' f(r f� �// f %
PRISM
LAB
la NO
`TYPE
SEE BELOW
NO
SIZE
411L
I
_
Sampler s Signature
Sampled By (Print Name I {� �< < I Aifllation-Ic
Upon relinquishing this ustody Is your authorization
for Prism to proceed the analyses as requested above Any changes must be
submitted in writing to the P i ofect Manager
There will be charges for any changes after analyses have been mitla[i2ed
'
ullnquis edgy Orjnatuf
Relinquish e By (Signatu �
ReceivedBy Sr9naiume ilateryr ours Addiiional Comments
r b lC -F � 3c�
Removed 9y (Signaiure a e
kSiteAmvalTrme s 4
I�Slte Departure Time
I
elinquished ay (igneture) rzecaai,!F r I` JaM Laborulo es Dale
f l ,
Melhod of hipmenl NOTE ALL SAMPLE COOLERS SHOULD UE TAPED SHUT IT U SEALS FOR TRANSPORTATION T THE LABORATORY LO G ou No
SAMPLES ARE HOT ACCEPTED AND VERIFIED AGAINST COC UNTIL RECEIVED AT THE LABORATORY (J�� Fed E- 12 UPS ❑ Handdellvd ❑ Pdm Fed Sece Cl otlier O�" 074
II Field Tech Fee I
imileage
LISTt�PDESI4SCI TER
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WATER E RC❑NSC(
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SC} 1
fiFtlf;[hlAl
`CONTAINER TYPE CODES A = Amber C = Clear G= Glass P = Plastic TL = Teflon lined Cap VIDA = Volatile Organics Analysis (Zero Head Space)

Semi-annual Stormwater Discharge Monitoring Report
for North Carolina Division of Water Resources General Permit No NCGO80000
Date submitted August20 2018
CERTIFICATE OF COVERAGE NO NCGOS 0 6 8 2
FACI LITY NAME City of Asheville Reet Maintenance
COUNTY BUI combe
PERSON COLLECTING SAMPLES Greg hutchlnsldAalt Wallace (Wood)
LABORATORY Prism Laboratories Eric Lab Cert # 402
Comments on sample collection or analysts
Samples collecled on Duty 6 2018 reported on separate DMR represent early 201 B Measurable storm event not available
SAMPLE COLLECTION YEAR 2018
SAMPLE PERIOD Q Jan -June ❑ July -Dec
or 0 Monthly' month
DISCHARGING TO CLASS EJORW ❑HQW ❑Trout ❑PNA
Zero -flow ❑Water Supply ❑SA
QOther Grass B
PLEASE REMEMBER TO SIGN ON THE REVERSE 4
Did this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per month?0 yes Ono
(if yes, report your analytical results in the table immediately below)
Part A Vehicle Maintenance Areas Monitoring Requirements (If applicable)
Q No discharge this period1
Outfall
No
- Date
Sample Collected,
mo/dd/yr
- 00530
0D400
rt - ' 3 i 100556
,Total Suspended ' ,
r
Solids, mg/L
a r, `- m pH,
rl
Standard urinits
`Non -Polar Oil and Grease/TP,H EPA,,
Method 1664 (SGT-HEM), mg/L
L New Motor Oil Usage,
Annual average gal%mo
Benchmark
L -
50 or 100 see permit
Withim6 0 — 0 0
15
11
550
Part B Oil/water Separators and Secondary Containment Areas at Petroleum Bulk Stations and Terminals (if applicable)
Outfall
No
Date i
Sample Collected, '
mo/dd/yr
00556
7 ` 005301 it% 1kt,� t
00400
Non -Polar oil and Grease/TPH EPA Method
r 1664 (SGT-HEM), mg/L'
Total,Suspended Solids, ;
I'''mg/L ' "` ''I I
1 pH, 'r
Standard units
Permit Limit
r , a -
-- 15 `
-650 or 100 see permit -' f
;. 6 0 — 9 0" - -
} For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here
SWU-250 last revised Apnl 11, 2013
Page I of 2

STORM EVENT CHARACTERISTICS
Date (first event sampled)
Total Event Precipitation (inches)
Date (list each additional event sampled this reporting period, and rainfall amount)
Total Event Precipitation (inches)
Note If you report a sample value in excess of the benchmark, you must implement Tier 1, Tier 2, or Tier 3 responses See General Permit text
FOR PART A AND PART 13 MONITORING RESULTS
• A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS SEE PERMIT PART II SECTION B
• 2 EXCEEDANCES IN A ROW FOR THE SAME PARAMETER AT THE SAME OUTFALL TRIGGER TIER 2 REQUIREMENTS SEE PERMIT PART 11 SECTION B
• TIER 3 HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER AT ANYONE OUTFALL7 YES ❑ NO Q
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICES YES NO
REGIONAL OFFICE CONTACT NAME
Mail an original and one copy of this OMR, including all "No Discharge" reports, within 30 days of receipt of the lab results (or at end of monitoring period
in the case of "No Discharge" reports) to
Division of Water Resources
Mtn DWR Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699 1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that
qualified personnel properly gather and evaluate the information submitted based on my inquiry of the person or persons who manage the system, or those persons directly
responsible for gathering the information the information submitted is, to the best of my knowledge and belief true, accurate, and complete I am aware that there are
significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations
(SignatVe of Permittee)
(Date)
Additional copies of this form may be downloaded at http //portal ncdenr org/web/wg/ws/su/npdesswtttab-4
S"ArU-250
last revised April 1], 2013
Page 2 of 2

Semi-annual Stormwater Discharge Monitoring Report
for North Carolina Division of Water Resources General Permit No NCG080000
Date submitted August20 2D18
CERTIFICATE OF COVERAGE NO NCGO8 0 6 8 2
FACILITY NAME City of Asheville Fleet Maintenance r
COUNTY Buncombe ^
PERSON COLLECTING SAMPLES Greg Hutchinsimati Wallace (Wood)
LABORATORY Prism Laboratories Inc Lab Cert # 402
Comments on sample collection or analysis
SAMPLE COLLECTION YEAR 2018
SAMPLE PERIOD ❑ Jan -June A July -Dec
or ❑ monthly' month
DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
❑zero -flow ❑Water supply [:]SA
Mother Class B
PLEASE REMEMBER TO SIGN ON THE REVERSE -3
Did this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per month?0 yes Ono
(if yes, report your analytical results in the table immediately below)
Part A Vehicle Maintenance Areas Monitoring Requirements (if applicable)
❑ Na discharge this period'
Outfall
No
Date
Sample Collected,
mo/dd/yr
00530 - ,•L -
00400
3 r Y D0556
Total Suspended
- :Solids, mg/L"
�pH,
- Standard units -
Non -Polar Oil and Grease/TPH EPA
Method 1664 (SGT-HEM), mg/L+
New Motor Oil Usage,
Annual average gal/mo
Benchmark
50 or 100 see permit
Within 6 0 — 9 0
15
-
5W 1
07/06/18
28
579
<5 0
550
SW 2
07/06/18
82
602
<5 0
550
Part B Oil/water Separators and Secondary Containment Areas at Petroleum Hulk Stations and Terminals (If applicable)
Outfall
No
Date
Sample Collected,
mo/dd/yr
00556
°`' l 00530
00400
Nan -Polar Oil and Grease/TPH EPA Method
€ „1.664 (SGT HEM),'mg/L 1'
r _ _' Total Suspended Solids,
' Ir mg/L' s
, pH,
Standard units
Permit Limit
- - L
, Ir' Is- - w °
""' 50 or 100 see permit
6 0 — 9 0
I For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here
SMFU-250 last revised April 11, 2013
Page- I of 2

STORM EVENT CHARACTERISTICS
Date 07106/18 (first event Sampled)
Total Event Precipitation (inches) 0 20
Date (list each additional event sampled this reporting period, and rainfall amount)
Total Event Precipitation (inches)
(Vote If you report a sample value in excess of the benchmark, you must implement Tier 1, Tier 2, or Tier 3 responses See General Permit text
FOR PART A AND PART B MONITORING RESULTS
• A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS SEE PERMIT PART II SECTION 3
• 2 EXCEEDANCES IN A ROW FOR THE SAME PARAMETER AT THE SAME OUTFALL TRIGGER TIER 2 REQUIREMENTS SEE PERMIT PART II SECTION B
• TIER 3 HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER AT ANYONE OUTFALL7 YES 0 NO Q
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES ❑ NO
REGIONAL OFFICE CONTACT NAME
Mail an original and one copy of this OMR, including all "No Discharge" reports, within 30 days of receipt of the lab results (or at end of monitoring period
in the case of "No Discharge" reports) to
Division of Water Resources
Attn DWR Central Files
1617 Mail Service Center
Raleigh North Carolina 27699 1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that
qualified personnel properly gather and evaluate the information submitted Based on my inquiry of the person or persons who manage the system or those persons directly
responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete I am aware that there are
significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations "
of Permittee)
-2/ Arc �o I
(Date)
Additional copies of this form may be downloaded at http portal ncdenr org/web/wq/ws/su/npdessw#tab-4
SVirTJ-250 last i evised April 11 2013
Page 2 of 2

August 20 2018
Mr James Castle
Fleet Manager
City of Asheville
P O Box 7148
Asheville North Carolina 28802
Subject Report of July 2018 Stormwater Discharge Sampling
City of Asheville Fleet Maintenance Budding
173 South Charlotte Street
Asheville North Carolina
Wood Project 6252-18 0338 06
Dear Mr Castle
Wood Environment & Infrastructure Solutions Inc (Wood) is pleased to submit this Report of July 2018
Stormwater Discharge Sampling for the City of Asheville Fleet Maintenance Building located on South
Charlotte Street in Asheville North Carolina This sampling was performed to comply with requirements
contained in the General Permit for Stormwater Discharge (Permit NCG080000 with an original effective
date of November 1, 2012 reissued on November 16, 2017 and expiring October 31, 2018) issued by the
North Carolina Department of Environment and Natural Resources now the North Carolina Department
of Environmental Quality (NCDEQ) City of Asheville s certificate of coverage under this permit is
NCGO80682
Background information
Two historically -sampled stormwater outfalls are located at the site, SW-1 and SW-2 as shown on the
attached Figure 1 These two outfalls discharge directly into Town Branch (also known as Nasty Branch),
which is enclosed beneath the srte and daylights approximately 1,500 feet to the southwest of the site
Sample location SW-1 is located at drop inlet DI#6 and sample location SW-2 is located at drop inlet
DI#2 Water samples are collected from the water flowing into the drop inlets from the surrounding paved
areas
There are an additional four drainage basin drop inlets which discharge into the two historically -sampled
drop inlets The northwest drop inlet DI#3 receives surface runoff as well as a pipe discharge from the
northern off -site City public works facility prior to discharging into drop inlet DI#2 Drop inlet DI#1
located to the east of the site building in the employee parking lot, is not exposed to vehicle
maintenance/industrial activities, and also discharges into drop inlet DI#2 The discharge of drop inlet
DI#4, located to the west of the site building is not precisely known, but is suspected to discharge to the
east into Town Branch which is enclosed beneath the site Drop inlet DI#5 located to the southwest of
the site building discharges into drop inlet DI#6
Correspondence
Wood Environment & Infrastructure Solutions inc
1308 Patton Avenue
Asheville North Carolina 28806
Tel [phone]

Cory of Asheville Fleet Maintenance Building —July 201 B Stormwater Discharge Sampling August 20 2018
Wood Project 6252 18-0338 06
A water quality classification is not listed for Town Branch on the NCDEQ Surface Water Classification
website/map Town Branch s confluence with the French Broad River is approximately 7,000 feet to the
southwest of the site According to NCDEQ s water quality classification of the French Broad River at the
confluence with Town Branch (a Classification B), the French Broad River is not currently classified as the
following sensitive receiving waters Outstanding Resource Waters High Quality Waters Primary Nursery
Areas and Trout Waters Therefore, the more protective benchmark value listed in the General Permit for
total suspended solids (50mg/L) does not apply to stormwater discharges at the site — the applicable
benchmark value for total suspended solids is 100 mg/L
A rain gauge is present at the site approximately six feet above ground in an open area at a distance of at
least twice the height of surrounding structures
Early 2018 Stormwater Sampling Activities
Because of frequent storm events in May and June opportunities for a measureable storm event with a
preceeding 72-hour dry period were limited Wood mobilized once to the site in the month of June
however, a measureable storm event did not materialize Other measureable storm events were outside of
the facility s normal operating hours
Based on the lack of measureable storm events in the later portion of the early 2018 permit sampling
period (Period 1) Wood recommended and performed sampling at the first measureable storm event in
July This storm event, with sampling activities described below, is considered to be representative of the
early 2018 permit sampling period, however, a NCDEQ Semi -Annual Stormwater discharge Monitoring
Report with an indicated no discharge for the early 2018 period is attached
Wood recommends performing a second sampling event at least 60 days after the July 2018 sampling
event but before October 31, 2018 This sampling event will be considered to represent Period 2 of the
2018 permitting year
July 2018 Stormwater Sampling Activities
Wood personnel were onsite to perform stormwater sampling during a measureable storm event on July
6, 2018 The storm event occurred between approximately 145 PM and 2 25 PM on July 6 2018 Wood
personnel performed stormwater sampling of the discharges starting at 205 PM Total rainfall for this
event within a 24-hour period was 0 20 inches as measured at the on -site rain gauge Rainfall sufficient to
produce a measureable discharge was not recorded during the 72 hours prior to this measurable storm
event
Within about 30 minutes of constant measurable discharge, the pH of the stormwater was measured with
a calibrated pH meter and stormwater samples were collected from the historic SW-2 location
(designated for this event as OF-1) and the historic SW-1 location (designated as OF-2 for this event) The
samples were packed in an ice -chilled cooler and delivered with chain -of -custody via overnight courier to
Environmental Science Corporation in Mt Juliet, Tennessee (a North Carolina -accredited laboratory) for
analysis The outfall samples were submitted for analysis of total suspended solids (fSS) according to
Standard Method 2540D and non -polar oil and grease according to EPA Method 16643 (SGT-HEM)
2

City of Asheville Fleet Maintenance Building — July 2018 Stormwater Discharge Sampling August 20 2018
Wood Project 6252 18-0338 06
Field analysis of the stormwater samples indicated pH readings were at the lower end, or just below, the
NCDEQ benchmark range The pH reading was 5 79 at SW-1 and 6 02 at SW-2 Laboratory analytical
results indicated TSS and non -polar oil and grease were below their respective NCDEQ benchmark values
The analytical results for the outfall samples are reported on the attached NCDEQ Semi -Annual
Stormwater Discharge Monitoring Report The laboratory analytical report and Chain of Custody Records
are attached to this report
Qualitative monitoring forms for the outfalls were also completed during sampling and will be provided
under separate cover for inclusion in the site Stormwater Pollution Prevention Plan documentation
Discussion and Recommendations
The pH value for SW-1 was generally slightly lower than or similar to concentrations that have been
previously detected and reported Based on the current detected concentrations of TSS and oil and
grease the values are in compliance with the General Permit conditions
Wood recommends that the following list of requirements for a Tier One response be performed at the
facility in relation to the measurement of pH below the benchmark range in the sample collected at SW-1
(drop inlet DI#6)
1 Conduct a stormwater management inspection of the facility within two weeks of receiving
sampling results
2 Identify and evaluate possible causes of the benchmark value exceedence
3 Identify potential, and select the specific source controls operational controls or physical
improvements to reduce concentrations of the parameters of concern, or to bring
concentrations to within the benchmark range
4 Implement the selected actions within two months of the inspection
S Record each instance of a Tier One response in the Stormwater Pollution Prevention Plan
Include the date and value of the benchmark exceedence the inspection date the personnel
conducting the inspection the selected actions and the date the selected actions were
implemented
Based on the preliminary results of an NCDEQ stormwater inspection in early August 2018, and review of
available historical stormwater sampling documentation sampling of drop inlets/outfalls at locations
other than SW-1 and SW-2 has not been performed Documentation related to Representative Outfall
Status designation of these historically -sampled outfalls was also not available
Wood recommends submitting this documentation of stormwater sampling along with the attached
Stormwater Discharge Outfall Monitoring Report to NCDEQ for their files
Wood recommends replacement of the sediment basket filtration material at least in locations DI#2 and
DI#6 During sampling it was noted that the basket filtration material was effectively clogged The
condition of the sediment basket material is likely similar at the other site drop inlets We note that
depending on availability of the style/model of the current sediment basket filtration material/insert it
might be more efficient and/or economical to replace the entire unit with another drop inlet filtration
model/device
3

City of Asheville Fleet Maintenance Budding —July 2018 Stormwoter Discharge Sampling August 20 2018
Wood Project 6252 I8-0338 06
Wood recommends sampling the following drop inlets/outfalls at the next measureable storm event prior
to October 31, 2018 (second permit Period of 2018) DI#2, DI#4, DI#S, and DI#6 Drop inlet DI#3 receives
surface runoff from off site, which is not representative of the on -site industrial activity Drop inlet DI#1
receives surface runoff from the employee/visitor parking area, which is a non -industrial area When
sampling of these other drop inlets/outfalls is complete and the data are evaluated consideration can be
given to proposing Representative Outfall Status of one or more outfalls and a description of the above
non -industrial starmwater discharges can be described and included in the Representative Outfall Status
request to NCDEQ
Wood recommends renewing the City of Asheville Fleet Maintenance Certificate of Coverage under the
General Permit for Stormwater Discharge, which expires on October 31 2018 NCDEQ should send
renewal instructions/procedures by mail Wood recommends reviewing the renewed General Permit for
potential changes in sampling (and other) requirements
We appreciate the opportunity to provide water resource services on this project If you should have any
questions, or need additional information please do not hesitate to contact us at [phone]
Sincerely
Wood Environment & Infrastructure Solutions Inc
Greg ry L Hutc n
Technical Professional H
GLH/MEW mew
Na#�k'W(tc�
Matthew E Wallace, P E
Principal Engineer
Attachments Figure 1 Site Drainage Plan
Laboratory Analytical Report and Chain -of -Custody
NCDEQ Semi -Annual Stormwater Discharge Monitoring Reports

t r
A
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.`
1 i w
�1kRKET I57-
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ti
ate'%
D I#5
DI#6/SW-1
A DI#3 P
IDE#2/SW-2
Wi
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s
� F
Legend
Drop Inlet Location
Subject Property
Site Drainage Plan 1 960 o ao ao
oo City Asheville Fleet Fee[
Maintenance Building Figure t Drawn By Gt_H 8lZOfiB
• Asheville North Carolina Project 6252180338 06 Approved By MEW 8120118

r
P. ',F ISM
v"L4BOWORIH, INC.
Full Service Analytical &
Environmental Solutions
Wood Environ & Infrastructure Inc (Asheville)
Greg Hutchins
1308 Patton Avenue (Suite C)
Asheville NC 28806
NC Certification No 402
NC Drinking Water Cert No 37735
SC Cerlfcation No 99012
Project City of Asheville Fleet Maintenance
Project No 6252180338 06
Lab Submittal Date 07/0712018
Prism Work Order 8070070
Case Narrative
07/13/2018
This data package contains the analytical results for the project identified above and includes a Case Narrative Sample
Results and Chain of Custody Unless otherwise noted all samples were received to acceptable condition and processed
according to the referenced methods
Data qualifiers are flagged individually on each sample A key reference for the data qualifiers appears at the end of this case
narrative
Please call if you have any questions relating to this analytical report
Respectfully
PRISM LABORATORIES, INC
Robbi A Jones
President/Project Manager
Data Qualifiers Key Reference
Reviewed By Robbi A Jones
President/Project Manager
OG HEM O&G is less than the reporting limit therefore TPH (SGT-HEM) is less than the reporting limit Sample not
extracted for TPH (SGT-HEM)
BRL Below Reporting Limit
MDL Method Detection Limit
RPD Relative Percent Difference
* Results reported to the reporting limit All other results are reported to the MDL with values between MBL and
reporting limit indicated with a J
This report should not be reproduced except in its entirety without the written consent of Prism Laboratores Inc
449 Springbrook Road P 0 Box 240543 Charlotte NC 28224 0543
Phone [phone] Toil Free Number 1-8001529.6364 Fax [phone] Page 1 of i

h Sample Receipt Summary
P R_ ISM I Futl Service al Salucal 8
� + Env,ronmental5olutenns 07113/2018
�UBONM1T0111E� Na
Prism Work Order 8070070
Client Sample ID Lab Sample ID Matnx Daterrrme Sampled Datefrrme Received
OF-1 8070070-01 Water 07/06/18 1415 07/07/18 1130
OF 2
8070070-02 Water 07/06118 14 05 07/07/18 11 30
Samples were received In goad condition at 4 6 degrees C unless otherwise noted
This report should not be reproduced except in its entirety without the wntten consent of Prism Laboratories Inc
449 Spnngbrook Road P O Box 240543 Charlotte NC 28224-0543
Phone [phone] Toll Free Number 1-8001529 6364 Fax [phone]n0409 Page 2 of 7

R I S M Full Sc rvice Anaiy[ical 5
It En--nmentai Solutions
"� LA�OME04lES. ING
Summary of Detections
07/1312018
Prism Work Order 8070070
Prism ID Client ID Parameter General Method Method Result Units
8070070-01 OF 1 Total Suspended Solids General Chemistry Parameters SM2540 D 82 mglL
8070070-02 OF 2 Total Suspended Solids General Chemistry Parameters
SM2540 D 28 rnglL
This report should not be reproduced except in sts entirety without the written censent of Prism Laboratories Inc
449 Springbrook Road P O Box 240543 Charlotte NC 28224 0543
Phone [phone] Toll Free Number 1 �800152M364 Fax [phone] Page 3 of 7

Fuil
vice
PSR I S M Env So men al Salwtio a
Env�ranmrnfaf Solutions
Wood Envlron & Infrastructure Inc (Asheville Project City of Asheville - Fleet
Attn Greg Hutchins Maintenance
1308 Patton Avenue (Suite C) Project No 6252180338-06
Asheville NC 28806 Sample Matrix Water
Laboratory Report
07/13/2018
Client Sample I❑ OF-1 I SW-2 location
Prism Sample I❑ 8070070-01
Prism Work Order 8070070
Time Collected 07/06/18 14 15
Time Submitted 07/07/18 11 30
Parameter Result
Units Report
MDL Dilution Method Analysis Analyst
Batch
Limit
Factor Date/Time
ID
General Chemistry Parameters
Oil & Grease (SGT HEM) BRL OG
mg1L 50
1 1 1 1664B 7110/18 11 18 SLS
PSGO132
Total Suspended Solids 82
mg1L 26
040 1 SM2540 0 7112118 13 10 C8P
PBG0184
This report should not be reproduced except in its entirety without the wntten consent of Prism Laboratories Inc
449 Spnngbrook Road P O Box 240543 Charlotte NC 28224-0543
phone [phone] Toll Free Number 1-8001529-6364 Fax [phone] Page 4 of 7

A�11--, !R I S�gM
IFull Se ZAnalytical Envfronm¢n[al SbluRione
i'FUBOA17b..M'.0
Wood Environ & Infrastructure Inc (Asheville Project City of Asheville - Fleet
Attn Greg Hutchins Maintenance
1308 Patton Avenue (Suite C) Project No 6252180338-06
Asheville NC 28806 Sample Matrix Water
Laboratory Report
07113/2018
Client Sample ID OF 2 SW-1 location
Prism Sample ID 8070070-02
Prism Work Order 8070070
Time Collected 07/06/18 14 05
Time Submitted 07/07/18 11 30
Parameter Result Units Report MDL Dilution Method Analysis Analyst Batch
Limit Factor DateRme ID
General Chemistry Parameters
0a & Grease (SGT HEM) BRL OG mg1L so 1 1 1 16640 7110118 11 18 SLS P8G0132
Total Suspended Solids 28 mg1L 25 040 1 SM2540 D 7112118 13 10 CBP PBG0184
This report should not he reproduced except in its entirety without the written Consent o1 Prism Laboratories Inc
449 Springbrook Road P D Box 240543 Charlotte NC 28224.0543
Phone [phone] Toll Free Number 1-8001529-6364 Fax [phone] Page 5 ai 7

�I Foll Semice sutin
r ISV EnvFSermental solutions
�LADOWITOHIfR INC.
Woad Environ & Infrastructure Inc (Asheville Project City of Asheville - Fleet
Attn Greg Hutchins Maintenance
1308 Patton Avenue (Suite C) Project No 6252180338-06
Asheville NC 28806
General Chemistry Parameters Quality Control
Level 11 QC Report
7113118
Prism Work Order 8070070
Time Submitted 7RI2018 11 30 OOAM
Reporting Spike Source %REC RPC
Analyte Result Limit Units Level Result %REG Limits RPM Limit Notes
Batch P8G0132 NO PREP
Blank (P8G0132 BLK1)
Prepared 8 Analyzed 07/10/18
Oil 8 Grease (SGT HEM)
BRL 50 mg&
Batch PBG0184 NO PREP
Blank (PSG0184 BLK1)
Prepared 8 Analyzed 07112/18
Total Suspended Solids
BRL 50 mg1L
LCS (P8G0184 BS1)
Prepared 8 Analyzed 07/12/18
Total Suspended Solids
480 50 mg/L 4770 101 90 110
This report should not be reproduced except in its entirety without the wntten consent at Prism Laboratories Inc
449 Spnngbrook Road P O Box 240543 Charlotte NC 282244543
Phone 704152"364 Toll Free Number 1-8001529-6364 Fax [phone]
1 Page 6 of 7

A CHAIN OF CUSTODY RECORD
I1 Full -Service Analytical & 11111111
/"140
;ii � l Y 1 I Environmental Solutions PAGE OF 1 allOTE It TO ENSURE PROPER SPILLING
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449 Springbroak Road Charlotte NC 28217 Project Name
Phone [phone] Fax 7 4152s4109 Short Hold Analysis (Yes) (No) UST Protect (Yes) (NO)
Client Company Name VV- D t s "Please ATTACH any protect specific reporting (QC LEVEL 1 II 111 IV)
provisions andlor QC Requirements
Report To/Contact Name e N�yk�t' ' Invoice To
Reporting Address O" f �- IC Address
I , " v NO 1dNIAarrival?Samples INTACT upon aval? trE,¢;Y r —�dRerved x
ON WET ICE�,+-PROPER PRESERVATIVES indf-64
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VOIATILES rec d WIDUT HEADSPACE? .. ,
�i PR OPER'CONiTAINER used? i _
TEMP Therm 161 Observed s Ii "G l Crrrq[(t'+'C
Phone Fax (Yes) (No) Purchase Order No Milling Reference —) — BE F1
0338 O
Einar! Address _ r e 4-i.c1. - v++ c,- c.a.•n FILLED IN BY CLIENT/SAMPLING PERSONNEL
Requested Due Date 01 Day El 2 Days ❑ 3 Days ❑ 4 Days El Days Certification NELAC DOD FL NC
EDD Type PDF%,,'- t/co __other Working Days ❑ 6 9 Days Standard 10 days ElRush Work
Must Be
Pre-- P Site Location Name C O _ F� M� 4140--rC- Samples received attar 14 00 will be processed next business day SC OTHER N/A
El
Site Location Physical Address Tumaround time Is based on business days excluding weekends and holidays ►� Water Chlorinated YES NO
(5EE REVERSE FOR TERMS & CONDITIONS REGARDING SERVICES `� r
RENDERED BY PRISM LABORATORIES INC TO CLIENT) - Sample Iced Upon Collectlon YE NO,_„_„
TIME MATRIX SAMPLE CONTAINER / ANA�LY !S REQUESTED
CLIENT DATE COLLECTED (SOIL PRESERVA f / PRISM
SAfdPLE DESGRlPTION COLLECTED MILITARY WATER OR *TYPE T1VE5 >^"� 2°� REMARKS LAB
ttottRs sauoGe) sI E eELow NO sIz>; � ��- ^_. . � f f� !� ID NO
l/ r� I f Yl'b L' 4 t r"FC-1 1 ;5Jl- � xI I I I 1 U
Samplers Signature_ Sampled By (Print Name t �� �t 4 ` Affiliation-L
Upon relinquishing this aI ustody is your authorization for Prism to proceed the analyses as requested above Any changes must be
submitted in writing to the P i oject Manager There will be charges for any changes after analyses have been initialized
.V -1 l
Additional Comments
310
SAMPLES ARE NOT ACCEPTED AND VERIFIED AGAINST COC UNTIL RECEIVED AT THE LABORATORY /
Fed Ex O UPS ❑ Hand -delivered D Prism Field Sannca I7 Other 0� o u t�%
DES UST GROUNDWATER DRINKING WATER SOLID WASTE RCRA CERCLA LANDFILL OTHER
C C7 SC C1 NC ❑ SC p NC ❑ SC O NC El SC O NC ❑ SC NC ❑ SC 13 O NC C] SC O NC ❑ SC 0 NC ❑ SC
'CONTAINER TYPE CODES A = Amber C = Clear G= Glass P = Plastic TL = Teflon Lined Cap VOA= Volatile Organics Analysis (Zero Head Space)
Site Amval Time
Site Departure Time
r .-
'Field Tech Fee - t
Md88go ' a
ORiG INAL

Semi-annual Stormwater Discharge Monitoring Report
for North Carolina Division of Water Resources General Permit No NCGO80000
Date submitted August20 2018
CERTIFICATE OF COVERAGE NO NCGO8 0 6 8 2
FACILITY NAME City of Asheville Fleet Maintenance
COUNTY Buncombe
PERSON COLLECTING SAMPLES Greg HulchlnsfMalt Wallace (wood)
LABORATORY Prism Laboratories Inc Lab Cert # 402
Comments on sample collection or analysts
Samples cnllecled on July 6 201E repoAed on separate DMR represent early 201E Measurable slorm evell not available
SAMPLE COLLECTION YEAR 2018
SAMPLE PERIOD 0 Jan -June Q July -Dec
or ❑ Monthly' (month)
DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
❑zero -flow ❑Water Supply ❑SA
Mother Class B
PLEASE REMEMBER TO SIGN ON THE REVERSE -)�
Did this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per month?Q yes Ono
(if yes, report your analytical results in the table immediately below)
Part A Vehicle Maintenance Areas Monitoring Requirements (If applicable)
®❑ No discharge this period'
Outfall
No
Date 1
Sample Collected, r
mo/dd/yr
00530
00400
00556
- Total Suspended
Solids, mg/i. ' '
pH, -
Standard units r
Non-Poiar Oil and Grease/TPH EPA
Method 1664 (SGT-HEM), mg/L
New Motor Oil Usage,
Annual average gal/mo
Benchmark
-
50 or 100 see permit
Within,6 0-9 0 1
15 ' 1,
-
550
Part B Oil/water Separators and Secondary Containment Areas at Petroleum Bulk Stations and Terminals (If applicable)
Outfall
No
I Date r
Sample Collected,i
mo/dd/yr
100556 1
00530, ­
00400
Non -Polar Oil and Grease/TPH EPA Method
1664 (SGT-HEM), mg/L
Total,Suspended Solids,
mg/L
pH,
Standard units
Permit Limit
-
- 15
50 or 100 see permit
6 0 — 9 0
i For sampling periods with no discharge at any single outfall, you must still summit this discharge monitoring report with a checkmark here
SWLT-250 last remised April 11 2013
Page I of 2

STORM EVENT CHARACTERISTICS
Date (first event sampled)
Total Event Precipitation (inches) _
Date (list each additional event sampled this reporting period, and rainfall amount)
Total Event Precipitation (inches)
W
Nate if you report a sample value in excess of the benchmark, you must implement Tier 1, Tier 2, or Tier 3 responses See General Permit text
FOR PART A AND PART B MONITORING RESULTS
• A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS SEE PERMIT PART II SECTION B
• 2 EXCEEDANCES IN A ROW FOR THE SAME PARAMETER AT THE SAME OUTFALL TRIGGER TIER 2 REQUIREMENTS SEE PERMIT PART II SECTION B
• TIER 3 HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER AT ANYONE OUTFALL? YES O NO 0
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES [:] NO
REGIONAL OFFICE CONTACT NAME
Marl an original and one copy of this DMR, including all "No Discharge" reports, within 30 days of receipt of the lab results (or at end of monitoring period
in the case of "No Discharge" reports) to
Division of Water Resources
Attn DWR Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699 1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED
"I certify under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that
qualified personnel properly gather and evaluate the information submitted Based on my inquiry of the person or persons who manage the system, or those persons directly
responsibke for gathering the information, the information submitted is, to the best of my knowledge and belief, true accurate, and complete I am aware that there are
significant penalties for submitting false information including the possibility of fines and imprisonment for knowing violations "
of Permittee)
a1 �V le
(Date)
Additional copies of this form may be downloaded at http //portal ncde_nr org/web/wgfv+is/sL(/npdessw#tab-4
SWU-250 last revised April 1 I , 2013
Page 2 of 2

Semi-annual Stormwater Discharge Monitoring Report
for North Carolina Division of Water Resources General Permit No NCGO80000
Date submitted AL19ust2o 2010
CERTIFICATE OF COVERAGE NO NCGO8 Q 6 8 2
FACILITY NAME City of Asheville Fleet Maintenance ^
COUNTY Buncombe
PERSON COLLECTING SAMPLES Greg HutctrnsiMatt Wallace (w000
LABORATORY Pnsm Laboratories Inc Lab Cert # 402
Comments on sample collection or analysts
SAMPLE COLLECTION YEAR 2018
SAMPLE PERIOD ❑ Jan -June 0 July -Dec
or ❑ Monthly' (month)
DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
[]zero -flow ❑Water Supply ❑SA
Other Class B
PLEASE REMEMBER TO SIGN ON THE REVERSE 3
Did this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per month? yes Ono
(if yes, report your analytical results in the table immediately below)
Part A Vehicle Maintenance Areas Monitoring Requirements (If applicable)
❑ No discharge this period'
Outfall
No
Date
Sample Collected,
mo/dd/yr
00530 -
00400
00556 -
Total Suspended
Solids, mg/L
pH, o
Standard units
Non -Polar Oil and Grease/TPH EPA
Method 1664 (SGT-HEM), mg/L
New Motor Oil Usage,
Annual average gal/mo
Benchmark
-
50 or 100 see permit-
Within 6 0-9 0
- 15 -
- -
SW 1
07i06118
28
579
<5 0
550
SW 2
07/06/18
82
602
<5 0
550
Part B Oil/water Separators and Secondary Containment Areas at Petroleum Bulk Stations and Terminals (If applicable)
Outfall
No
Date
Sample Collected; �,
mo/dd/yr
, 00556 .j
D0530
00400
Non -Polar Oil and Grease/TPH EPA Method
1664 (SGT-HEM), mg/L
Total Suspended Solids,
mg/L
i pH,
Standard units
Permit Limit
-
15 t
50 or 100 see permit
6 0 — 9 0
4 For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here
SWU-250 last revised April 11, 2013
Page I of 2

STORM EVENT CHARACTERISTICS
Date 071G6/18 (first event sampled)
Total Event Precipitation (inches) 0 20
Date (list each additional event sampled this reporting period, and rainfall amount)
Total Event Precipitation (inches)
Nate If you report a sample value in excess of the benchmark, you must implement Tier 1, Tier 2, or Tier 3 responses See General Permit text
FOR PART A AND PART 8 MONITORING RESULTS
• A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS SEE PERMIT PART II SECTION B
• 2 EXCEEDANCES IN A ROW FOR THE SAME PARAMETER AT THE SAME OUTFALL TRIGGER TIER 2 REQUIREMENTS SEE PERMIT PART II SECTION B
• TIER 3 HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEOENCES FOR THE SAME PARAMETER AT ANY ONE OUTFACE? YES ❑ NO Q
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES ❑ NO
REGIONAL OFFICE CONTACT NAME
Mail an original and one copy of this DMR, including all "No Discharge" reports, within 30 days of receipt of the lab results (or at end of monitoring period
in the case of "No Discharge" reports] to
Division of Water Resources
Attn DWR Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699 1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED
"I certify under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that
qualified personnel properly gather and evaluate the information submitted Based on my inquiry of the person or persons who manage the system or those persons directly
responsible for gathering the information the information submitted is, to the best of my knowledge and belief, true accurate, and complete I am aware that there are
significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations "
(Signatt4e of Permittee)
(Date)
Additional copies of this form may be downloaded at htt I/portal ncdenr orgZweb/wg/ws/su/npdessw#tab-4
SWU-250 last devised Apnl 11 2013
Page 2 of 2