NC0081825_Cl2 Meter Calibration_20170711

WN
July 11, 2017
ANS . NVILLE
Chad Turlington
Environmental Specialist
Division of Water Resources
225 Green Street, Suite 714
Fayetteville, NC 28301
RECEIVED
DEQ/DWR
JUL 1 8 2017
S
FAYETTEVILLE�REGIONAL OFFICE
Re: Chlorine Meter Calibration Curve Verification
Dear Mr. Turlington:
Enclosed please find the Chlorine Meter Calibration Curve Verification for the Town of
Ansonville.
If you have any questions, please contact
Sincerely,
Dianna McLaughlin
Town Clerk
Town of Ansonville
me at 704-826-8404.
PO 10OX 437 ANSONVILLE, NORTH CAROLINA © 28007 a [phone]

Chlorine Meter Calibration Curve Verification
Date: 7/5/2017 Meter SIN:
Analyst: Diana McLaughlin Meter Program #: Hach 86 ULR
Lab Name: ANSONVILLE NC WW/GW Certificiation # 5242
Instructions: Fill in the information above. Enter the actual concentrations of the standards in your curve in cells
A19 through A23. Enter the values that you observe on the meter in cells B19 through B23. The % Recovery and
the Correlation Coefficient will be automatically calulated.
For the curve to pass...
The Correlation Coefficient must be >_ 0.995
and...
Standard concentrations Tess than 50 pg/L must have a % Recovery between 75 -125 %.
and...
Standard concentrations of 50 pg/L or higher must have a % Recovery between 90 -110 %.
Actual, pg/L Observed,-pg/L % Recovery Std Pass/Fail slope intercept
400 404 101 Passed 1.014 -5.125
200 190 95 Passed
100 95 95 Passed
50 48 96 Passed
25 23 92 Passed
Corr. Coefficient =
1.000 Corr. Coefficient
Gel/Sealed Liquid Standard Observed Concentration =
Gel/Sealed Liquid Standard Manufacturer: HACH
Meter Program: 86
Passed
Lot #:
p.g/L
A0349