N PAHs in sediment Boiler Ponds 1 2 Wastewater Ponds Fire Water Pond In fi ltra � on Over land fl ow Sur fi cial Aquifer k e e r C n P o e e e d g e r e u t A S q u i f e r LEGEND NAPL Marsh Deposits/Muck Tan/Yellow Sands Gray Sands and Silt Conceptual Site Model Sandstone Upland to Marsh Transi�on Zone Clay Kerr McGee Chemical Corpora � on Site Groundwater Table Eleva � on Navassa, Brunswick County, NC Groundwater Flow Direc � on Not to Scale EN1028151057WDC GETG_Kerr-McGee_Navassa_CSM_v3.ai 4-4-16 ct Approximate Elevation (feet mean sea level) Former Process Area 1965 Aerial Imagery Suspected Pond Identified in 1975 Photograph Evaporation Pond 0 -50 -100 Aerial Imagery - 2015
( ! ( ! ! ! ( ( Former ( ( ! ! ( ! ! ( Process ! ! ( ( ( ! ( ! ! ! ( ( Area ! ! ( ( ! ! ( ( ! ! ( ( Suspected Pond ! ( ( ! ! ! ( ( Identified in 1975 Photograph Former ! ! ( ( ! ! ( ( ( ( ! ! Evaporation ! ( ! ( ! ( ! ( Pond ( ! ( ! ( ! ( ! ! ! ( ( ! ( ! ( ( ! ! ( ! ( ( ! ! ! ( ( ! ( ( ! ) ) " " ( ( ! ! P ! ( ( ! " " ) ) ! ! ( ( " ) ) " ( ( ! ! ) " ) " ! ! ( ( ! ! ! ( ( ! ( ( Fire Water Former ( ! ! ( ! ! ( ( ! ( ( ! O Pond 1 ( ! ( ! Boiler ( ! ( ! Ponds ( ! ( ! ! ( ! ( ( ! ! ( 2 " " ) ) ! ! ! ( ( ! ) " " ) ( ( ! ( ( ! ! ( ( ! N ( ! ( ! ( ! ! ( " ) " ) " ) " ) " " ) ) " ) " ) ! ( ( ! " " ) ) ! ! ( ( ! ! ( ( " ) ) " " ) ) " ( ! ! ( Former ( ( ! ! ! ! ( ( ) " " ) ! ( ( ! Wastewater ! ! ( ( ( ! ( ! " ) ) " Ponds " " ! ! ) ) ( ( ! ! ( ( " " ) ) ( ( ! ! ! ! ! ! ( ( ( ( ) " ) " ) ) " " " ) ) " ! ( ! ( ! ( ( ! ! ( ! ( ! ! ( ( ! ! ( ( M " " ) ) ! ! ( ( " ) ! ( ! ( L ) " " ) ( ! ( ! ! ! ( ( ) " ( ! ( ! ! ! K ( ( ) " ) " ( ! ( ! ! ! ( ( ! ! ( ( ( ! ! ( A " " ) ) J ! ! ( ( ! ! ( ( ! ! ( ( ) " ) " ± " I ) ! ! ( ( ) " ! " ) ( ) " ! ( B G E " ) C F D 0 225 45 0 H ) " ( ! ! ( " ) Scal e I n Feet Kerr-McGee Chemical Soni c and Tar G O ST cal l out s i ncl ude t he f ol l ow i ng A Completed SRI Sampling Locations ! Supplemental Remedial Pi ezom et er Locat i on (Sample ID, Total Depth, NAPL Interval) PR EPAR ED FO R: Corporation Site, i nf or m at i on f r om t op t o bot t om : Investigation Work Plan ) " ! Pr oposed Vi br acor e Sam pl e Locat i on ( Tar G O ST, N APL not det ect ed Navassa, North Carolina Existing Permanent Monitoring Wells: ! I dent i f i cat i on ( Tar G O ST, N APL D et ect ed Completed TarGOST and Sonic Tar G O ST Sam pl i ng Tr ansect Tot al D ept h i n f eet bel ow gr ound sur f ace " ) Soni c Bor i ng, NAPL not det ect ed O n Si t e R oads Fi gur e A – C om pl et ed and R ange of N APL i n f eet bel ow gr ound sur f ace Borings, and Proposed Vibracore " ) Soni c Bor i ng, NAPL D et ect ed Pat hs P r oposed Sam pl i ng Locat i ons Sampling Locations Proposed Monitoring Wells: For m er I m poundm ent G r eenf i el d Envi r onm ent al M ul t i st at e Tr ust , LLC , A ! Pee Dee Aqui f er Tr ust ee of t he M ul t i st at e Envi r onm ent al D ATE: D ATE: D ATE: 12/7 /20 12/7 /20 12/7 /20 15 15 15 PN : 65 9368 R esponse Tr ust < & Sur f i ci al Aqui f er C R EATED BY: N C Note: Locations of former impoundments are approximate, based on draft Remedial Investigation report developed by AECOM. BASE M AP SO U RC E: C H EC KED BY: KB ESRI , Ar cM ap I m ager y - M i cr osof t , 20 11 "S" denotes monitoring well to be screened in shallow perched water. CH 2M HI LL Nor t h Car ol i na, I nc.
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