Minutes & Attachments - Marine Corps Base Camp Pendleton

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Groundwater Flow – Shallow Aquifer7 NAS North Island Operable Unit 20 January 17, 2013Groundwater Flow – Deep Aquifer8 NAS North Island Operable Unit 20 January 17, 2013
II. Extent of Contamination –Recent Additional DelineationFour new monitoring wells installed and sampled in 2012:• 1115-MW9– Purpose: Define deep aquifer VOC conditions on west side of Site 1115.– Results were below Maximum Contaminant Levels (MCLs). Trichloroethene(TCE) and chloroform were above Project Screening Limits (PSLs).• 1115-MW10 and 1115-MW11– Purpose: Shallow aquifer VOC delineationsoutheast of Site 5/8/9/17– Results were below PSLs• 1115-MW12– Purpose: Refine limit of VOC contamination innortheast portion of Site 1115– Results were below MCLs; Above PSLs forbenzene, TCE, napthalene9 NAS North Island Operable Unit 20January 17, 2013II. Conceptual Target Treatment Zones(TTZs)• Purpose: TTZs are designated to promoteoptimal selection of response actions andremedial alternatives.• TTZs represent distinct chemical and/orhydrogeological conditions.• Delineation of boundaries of dilute plume (nonsourcearea) TTZs will be based on thedominant contaminants present in each area.• “Source zone” TTZs will be defined based onestimated contaminant concentrationthresholds.10 NAS North Island Operable Unit 20 January 17, 2013
Page 4 and 5: Ms. Prowell announced that she will
Page 6 and 7: if the remediation approach for the
Page 8: MCB Camp Pendleton109 th FFA Meetin
Page 13 and 14: groundwater, however, additional wo
Page 15 and 16: Site 1118 - 21/26/52 Area Groundwat
Page 17 and 18: MCB Camp Pendleton Deliverables Spr
Page 19 and 20: Date: 1/17/13RTC ApprovedItem Docum
Page 21 and 22: • Site 7 - Revegetation• Site 7
Page 23 and 24: MCB CAMP PENDLETON22/23 AREA GROUND
Page 26 and 27: MCB CAMP PENDLETONSITE 21PILOT STUD
Page 28: Injection Details:Site 21 Pilot Stu
Page 31 and 32: IR SITE 1116 PHASE I & II SISubsite
Page 33 and 34: IR SITE 1116 PHASE I & II SIPhase I
Page 35 and 36: IR SITE 1116 PHASE I & II SIGroundw
Page 41 and 42: SOUTHWEST DIVISIONMCB Camp Pendleto
Page 43: I. Background InformationFormer UST
Page 47 and 48: II. Conceptual Target Treatment Zon
Page 49 and 50: II. Conceptual Target Treatment Zon
Page 51: III. Technology Screening/Alternati

Minutes & Attachments - Marine Corps Base Camp Pendleton

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