8103_Rutherford_Central _MSWLF_MonitoringRequest_FID1664554_20220414

SCARLETT GEOPHYSICAL CONSULTING, P.C.
500 Hepowil Trace
Hillsborough, NC 27278
April 8, 2022
Jaclynne Drummond
Hydrogeologist
Solid Waste Section, Division of Waste Management
NCDEQ
Jaclynne Drummond,
919-477-9519
www.scariettgeophysics.com
Based on the overall body of sampling results since 1993, Appendix II sampling results since
August 1995, and MNA sampling results since October 2008 the contaminant plume is stable,
controlled, and responding to natural attenuation processes. There is adequate and strong
evidence that natural attenuation is occurring, and parent products and daughter products are
transforming and decreasing. Due to the stability indicated by decades of data and trend analyses
and lack of historical detection of Appendix II constituents, I am recommending on behalf of the
County that Appendix II and MNA sampling frequency be reduced to once every years.
Tears.
Appendix I and C&D sampling should be continued on a semi-annual schedule.
As discussed in. your February 15, 2022 letter, the presence of 1,4-Dioxane in several samples
will be addressed by adding it to Central Landfill's Constituent of Concern List and by g addin an
additional surface water sampling location on Cleghorn Creek immediately upgradient from the
wastewater treatment facility.
E. W. Scarlett, Jr.
G6
Scarlett Geophysical onsulting, PC