NCG030650_COMPLETE FILE - HISTORICAL_20181101

(v]VA)
STORMWATER DIVISION CODING SHEET
NCG PERMITS
PERMIT NO.
IV C& b 3 b 05 -D
DOC TYPE
E�' HISTORICAL FILE
❑ MONITORING REPORTS
DOC DATE
n )0)% 11 o I
YYYYMMDD

Moore, James
From: Nicole Johnston < [e-mail] >
Sent: Thursday, November 01, 2018 11:10 AM
To: Moore, James
Subject: [External] Stormwater Sampling for CommScope (Catawba and Claremont)
Attachments: Stormwater Sampling for CommScope - Catawba (since 11072015).xlsx; Stormwater
Sampling for CommScope - Claremont (since 2014).xlsx
James,
Thanks for speaking with me last Friday. As we discussed, here is notification of exceedances for the following sampling
events at the CommScope — Catawba facility. I have also attached the spreadsheet that I sent to you earlier this week
that denotes all data for both facilities (Catawba and Claremont). As for Claremont, they may reach the exceedances
with the past sample event on Saturday, October 201h, 2018; however, these results will not be obtained for a week or
two. I will let you know on these. I did mail the September 2018 DMRs to your attention for both facilities on this past
Saturday as well.
As I was looking back on the data for the past three (3) years, I noticed that sampling was completed more than
originally required (as per previous exceedances in the 2015 year). Sampling was conducted on multiple events during
the past three (3) years to document corrective actions for past copper and zinc occurrences.
As far as Catawba goes, the facility has exceeded the benchmark values for the following outfalls for either copper
(0,007 mg/L) and/or zinc (0.067 mg/L) as noted for the past three (3) years:
Outfall ID
Date
Copper
Zinc Exceedance
Comments (Blank spaces
Exceedance
(>0.067)
denote compliance with
(>0.007 mg/L)
mg/L
benchmark values
and/or no issues)
003
9/26/2018 (2``' part of
0.036
0.'15
year 2018)
4/24/2018 (1 " part of
0.012
0.14
year 2018)
2/7/2018
0.01
0.12
12/20/2017 (2"h part
0.0106
0.106
of year 2017)
9/11/2017
0.01
0.09
January through June
Missed sampling
Missedsampling event
Missed sampling event
2017
event
For first part of 2017
12/6/2016 (2' " part of
0.285
0.1
year 2016)
5/7/2016 W` part of
0.1
year2016)
2/23/2016
0.0097
0.13
005
9/26/2018 (2rd part of
0.13
0.21
year 2018)

4/24/2018 (1" part of
year 2018)
0.008
0.1
2/7/2018
0,13
12/20/2017 (2"d part
of year 2017)
0.00945
0,1365
9/11/2017
January through June
2017
Missed sampling
event
Missed sampling event
Missed sampling event
for first part of 2017
12/6/2016 (2"6 part of
year 2016)
5/7/2016 (1" part of
year 2016)
0,083
2/23/2016
0,037
0.21
009
9/26/2018 (2" part of
year 2018)
0.008
4/24/2018 (.1' part of
year 2018)
0.013
2/7/2018
0.021
12/20/2017 (2"d part
of year 2017)
0.0073
9/11/2017
0.07
January through June
2017
Missedsampling
event
Missed sampling event
Missed sampling event
for first part of 2017
12/6/2016 (2"" part of
year 2016)
0.01
5/7/2016 (1y` part of
year 2016)
0,11
2/23/2016
0,014
0.11
012
9/26/2018 (2"0 part of
year 2018)
0.01
0.13
4/24/2018 (1" part of
year 2018)
0.058
0.13
2/7/2018
0.13
12/20/2017 (2"d part
of year 2017)
0.0077
0.127
9/11/2017
0.11
January through June
2017
Missed sampling
event
Missed sampling event
Missed sampling event
for first part of 2017
12/6/2016 (2"d part of
year 2016)
0.087
0.1S5
5/7/2016 (1" part of
year 2016)
0.2
2/23/2016
0.0092
0.31
From the data above, it appears that the following outfalls were above the benchmark values for the past four (4)
sampling periods as follows:
Outfali ID: Time Period
Copper (<0.007 mg/L) —
Zinc (>0.067 mg/L) —
Exceedances per Period
I Exceedances per Period

003
July through December
2018
1
1
January through June 2018
2
2
July through December
2017
2
2
January through June 2017
No sampling
No sampling
July through December
2016
1
1
January through June 2016
1
2
005
July through December
2018
1
1
January through June 2018
1
2
July through December
2017
1
1
January through June 2017
No sampling
No sampling
July through December
2016
0
0
January through June 2016
1
2
000
July through December
2018
1
0
January through June 2018
2
0
July through December
2017
1
1
January through June 2017
No sampling
No sampling
July through December
2016
1
0
January through June 2016
1
2
012
July through December
2018
1
1
January through June 2018
1
2
July through December
2017
1
2
January through June 2017
No sampling
No sampling
July through December
2016
1
1
January through June 2016
1 2
2
Please call me at your convenience to discuss further. Thanks for your help and have a very blessed weekend and
upcoming week!
Nicole Johnston
336-366-0870 (mobile)
nicole.,iohiistonnyvsa.org