7401_PittCountyMSWLF_14DayNotice_GWMR_20170303

Compounds Detected At or Above the SWSL during the January 2017 Sampling Event (1/11-12/2017)
Southern Unit of the Pitt County Municipal Solid Waste Landfill (Permit #74-01)
Well
ID Parameter Results
(µg/L)
MDL
(µg/L)
NC SWSL
(µg/L)
NC 2L or
2B Std*
(µg/L)
GWP Std
(µg/L)
MCL
(µg/L)
EB Zinc Total 58.7 4.4 10 1000 --
MW6R Barium Total 1440 1 100 700 -2000
P04^Barium Total 101 1 100 700 -2000
Barium Total 957 1 100 700 -2000Benzene2.4 0.15 1 1 -51,4-Dichlorobenzene 3.5 0.19 1 6 -75Barium Total 638 1 100 700 -2000Benzene1.7 0.15 1 1 -5Ethylbenzene1.2 0.13 1 600 -700P28Zinc Total 19.2 4.4 10 1000 --
SW1^Zinc Total 41.0 4.4 10 60 --
SW2 Zinc Total 26.4 4.4 10 60 --
MDL = Method Detection Limit MCL = Federal Maximum Contaminant LevelNC SWSL = North Carolina Solid Waste Section Limit GWP STD = groundwater protection standard
J = The analyte was positively identified, but the value is estimated below the reporting limit.
All concentrations reported in micrograms/liter (µg/L).
Concentrations in bold and highlighted in yellow were detected above the 2L (or 2B) standards.
*15A NCAC 2L groundwater standards are listed for all groundwater sampling locations. 15A NCAC 2B standards are listed for
surface water sampling locations (SW1 and SW2).
The concentrations of barium in wells MW6R and P16R are believed to be partially attributable to natural
sediment as has been previously demonstrated in the Alternative Source Demonstration Report dated April
20, 2011 and the January 2015 Semi-Annual Water Quality Monitoring Event Report. Barium is ubiquitous
in groundwater samples collected at this site, including all upgradient samples.
The source of benzene in wells P16R and P20R is unknown. P16R is located upgradient of the Southern
Unit of the Pitt County Landfill.
P16R
P20R