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Home My WebLink AboutAttach. 16, 2016-03-01 GGS NPDES supplemental sampling-qCantee Cooper' CERTIFIED MAIL March 1, 2016 SCDHEC Bureau of Water/Water Pollution Control Division Data and Records Management Section 2600 Bull Street Columbia, South Carolina 29201 To whom it may concern: Re: Santee Cooper Grainger Generating Station, Horry County NPDES Permit# SC0001104 NPDES Groundwater Semi-annual Report for 2015 -Addendum When the site was sampled November 2-5, 2015, two of the wells, GGSMW-10 and GGSMW-3, and the three piezometers at the site, PZ -1 through PZ -3, were inaccessible due to remaining floodwaters from the 1000 -year flood in early October 2015. The two wells, both located on Ash Pond 1, were sampled on December 8, 2015, but, the three piezometers, located near Ash Pond 2, were still under water. Attached are the laboratory results and an updated arsenic concentration map. The next groundwater sampling event is scheduled for April 4, 2016. If you have any questions or comments concerning this project, please contact Melanie D. Goings, P.G., at (803) 761-8000 extension 4490. Sincerely, n W. Jack n, PE Manager CCP & Waste Management Ok SWJ:DBB:MDG: cgb One Riverwood Drive I Moncks Corner, SC 29461-2901 I (843) 761-8000 1 P.O. Box 2946101 I Mcncks Corner, SC 2 94 61-61 01 Attachments cc w/attachments: Mr. Chris Forrest Groundwater Protection Section SCDHEC Bureau of Water 2600 Bull Street Columbia, South Carolina 29201 Mr. Gary Stewart State Voluntary Cleanup Section SCDHEC Bureau of Land and Waste Management 2600 Bull Street Columbia, SC 29201 MOM Feet 2,000 3,000 M. MW -2 • �`" • 44 MW -10 ,. &ffi pad ® MW -3 MW -1 MAT ffNrho- MW-4 �•C�3 • G -SW -_Canal G -SW -ICP• • MW -6 G -SW -HDD -1 • • PZ -1 PZ-30 PZ-2 •G-SW-AP2-1 MW -5 G-SW-AP2-2 • C�in7F�YJL�D3`• * G -SW -HDD -2 • •sr�a rrFr C^� Industrial oolin.a Iand .• IM r3L J a;e;lns m e J apyol43 m e O spllos J popuadsnSlelol e spllos J panlossld 1e40l m e J QUIZ rn 0 J wnllle4l T ' J � wnlualaS = J c PUG -1 J a uoil J O jaddoo _ J wnlwayo " J wniwpeo O V wnueg ° paniossld J - 31Uasiv O1 J ? 0! oluasw m = d N s N r a 41 E 0 N W N A N c y o m m o y 3�3 EN N L � � CL m v a J M M E N lepuuiud uo!lonpaa E uogep!xo •puo3 •oadg ra fG!P!Qinl Z v y Hd U dwal uoi;en013 a " u 41da0 d LL Y_i N m a ro !7` _N cQ r E � N N N L d W G O � a a N d a v <L E o 0 y ¢ a "sante cooper SANTEE COOPER ANALYTICAL SERVICES CERTIFICATE OF ANALYSIS LAB CERTIFICATION #08552 Sample # AD37435 Location: GW Well GGSMW-3 Date: 12/08/2015 Loc. Code GGSMW-3 Time: 12:15 One Rivenvood Dnve P.O. Box 2946101 Monks Comer, SC 29461-2901 (8431761-8000 Sample Collector: MDG Analysis Result QUAL Units Test Date Analyst Arsenic 198.4 ug/L 12/17/2015 KLMORAN Arsenic -Dissolved 112.821 ug/L 12/17/2015 KLMORAN Barium 85.2 ug/L 12/17/2015 KLMORAN Cadmium <5 ug/L 12/17/2015 KLMORAN Chloride 6.61 mg/L 12/09/2015 LCWILLIA Spec. Cord. 191 us 12/08/2015 MDGOINGS Chromium <5 ug/L 12/17/2015 KLMORAN Copper <10 ug/L 12/17/2015 KLMORAN Depth 3.03 Feet 12/08/2015 MDGOINGS Elevation 3.69 Feet 12/08/2015 MDGOINGS Iron 3682.4 ug/L 12/17/2015 KLMORAN Oxidation Reduction Potential 172 my 12/08/2015 MDGOINGS Lead <10 ug/L 12/17/2015 KLMORAN pH 6.5 SU 12/08/2015 MDGOINGS Selenium <10 ug/L 12/17/2015 KLMORAN Sulfate 8.85 mg/L 12/09/2015 LCWILLIA Total Dissolved Solids 240.0 mg/L 12/10/2015 AJBROWN Temp 17.85 C 12/08/2015 MDGOINGS Thallium <1.0 U ug/L 12/18/2015 TESTAMERICA Total Suspended Solids 8.50 mg/L 12/10/2015 AJBROWN Turbidity 9.1 NTU 12/08/2015 MDGOINGS Zinc 61.8 ug/L 12/17/2015 KLMORAN Independent Laboratory Results: "GEL' - GEL Laboratories LLC - Lab ID # 10120; "Test America" - TestAmerica Laboratories, Inc. - Lab ID# 98001; "DavisBrown"- Davis & Brown Lab ID # 21117; "Shealy"- Shealy Environmental Services, Inc.- Lab ID# 32010 Analysis Validated: r Debra K. Guerry - Supervisor, Analytical Services Method EPA 200.7 EPA200.7 EPA 200.7 EPA200.7 EPA 300.0 EPA200.7 EPA200.7 EPA 200.7 SM2580 EPA 200.7 EPA 200.7 EPA 300.0 SM 2540C EPA 200.7 / 6010 SM 2540D EPA 2003 santee cooper SANTEE COOPER ANALYTICAL SERVICES CERTIFICATE OF ANALYSIS LAB CERTIFICATION #08552 Sample # AD37436 Location: GW Well GGSMW-10 Date: 12/08/2015 Loc. Code GGSMW-10 Time: 13:43 One Rivemood Drive P.O. Box 2946101 Moncks Corner, SC 29461-2901 (843) 761-8000 Sample Collector: Analysis Result QUAL Units Test Date Analyst Arsenic 558.9 ug/L 12/17/2015 KLMORAN Arsenic - Dissolved 188.010 ug/L 12/17/2015 KLMORAN Barium 401.3 ug/L 12/17/2015 KLMORAN Cadmium <5 ug/L 12/17/2015 KLMORAN Chloride 24.3 mg/L 12/09/2015 LCWILLIA Spec, Cond. 1060 us 12/08/2015 MDGOINGS Chromium <5 ug/L 12/17/2015 KLMORAN Copper <10 ug/L 12/17/2015 KLMORAN Depth 5 Feet 12/08/2015 MDGOINGS Elevation 3.92 Feet 12/08/2015 MDGOINGS Iron 61180.6 ug/L 12/17/2015 KLMORAN Oxidation Reduction Potential -17 my 12/08/2015 MDGOINGS Lead <10 ug/L 12/17/2015 KLMORAN pH 6.09 SU 12/08/2015 MOGOINGS Selenium <10 ug/L 12/17/2015 KLMORAN Sulfate 87,1 mg/L 12/09/2015 LCWILLIA Total Dissolved Solids 572.5 mg/L 12/10/2015 AJBROWN Temp 18.1 C 12/08/2015 MDGOINGS Thallium <1.0 U ug/L 12/18/2015 TESTAMERICA Total Suspended Solids 18.79 mg/L 12/10/2015 AJBROWN Turbidity 43.4 NTU 12/08/2015 MDGOINGS Zinc 20.2 ug/L 12/17/2015 KLMORAN Independent Laboratory Results: "GEL" -GEL Laboratories LLC -Lab ID # 10120; "Test America" - TestAmerica Laboratories, Inc. -Lab ID# 98001; "DavisBrown"- Davis & Brown Lab ID # 21117;'Shealy'- Shealy,* Environmental Services, Inc.- Lab ID# 32010 Analysis Validated: Debra K. Guerry - Supervisor, Analytical Services MDG Method EPA 200.7 EPA 200.7 EPA 200.7 EPA 200.7 EPA 300.0 EPA 200.7 EPA 200.7 EPA 200.7 SM2580 EPA 200.7 EPA 200.7 EPA 300.0 SM 2540C EPA 200.7 / 6010 SM 2540D EPA 200.7