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HomeMy WebLinkAbout15019_Norfolk EMP Addendum 2014_09_25 Via E-Mail September 25, 2014 NC DENR Division of Waste Management Brownfields Section 1646 Mail Service Center Raleigh, NC 27699-1646 Attention: Ms. Carolyn Minnich Re: Environmental Management Plan Addendum Norfolk Southern Intermodal Facility Brownfields Project No. 15019-11-60 Charlotte, North Carolina H&H Job No. CAT-003 Dear Carolyn: 1.0 Introduction On behalf of the Charlotte Area Transit System (CATS), Hart & Hickman (H&H) is submitting this addendum to the Environmental Management Plan Revision 3 dated January 23, 2013 (EMP). The purpose of this addendum is to briefly summarize findings from the preliminary assessment, outline additional sampling to be completed to further delineate contaminated areas, and provide guidance on the field screening which will be conducted in the non-impacted areas of the site. 2.0 Summary of August 2014 Sampling In August 2014, the City of Charlotte took ownership of the Norfolk Southern Intermodal Facility (NSIF) Property. Upon completion of the transaction, H&H completed the assessment specified in the EMP dated January 23, 2013, which was a suspected source area assessment. A summary of the data collected is included in Tables 1 through 3. A detailed review of the Ms. Carolyn Minnich September 25, 2014 Page 2 S:\AAA-Master Projects\Charlotte Area Transit System (CAT)\CAT-003 BLE\NSIF Assessment\Delineation Sampling Work Plan\NSIF EMP Addendum.docx August 2014 sampling data will be provided in the final report, which will also include results of the proposed sampling outlined in the next section. Based on the August 2014 data, both impacted and non-impacted areas were outlined and a soil management plan figure was developed (Figure 2). Contaminated areas were defined based on those samples from borings which had metals at concentration greater than two times average background concentrations, or detections of anthropic compounds such as PAHs at any level. In general, this project is a soil cut situation and impacted soil which cannot be reused on the NSIF Brownfields site will be transported to Republic Landfill in Concord, NC for disposal. If small volumes of impacted soils can be reused on this Brownfields site, it will be reused in accordance with the approved EMP. Based upon conversations with DENR, areas defined as non-impacted can be removed from the site and utilized by the contractor as needed along the BLE project during construction activities, as long as these soils are field screened for impacts by an environmental personnel during removal. Additional details regarding the field screening methods are discussed in Section 4.0. 3.0 Additional Assessment In order to potentially reduce the amount of soil considered to be impacted, 30 additional soil borings will be installed to depths ranging from 5 to 15 ft below ground surface (bgs). Boring locations were generally based on a 100 ft grid within contaminated areas; however, select locations were biased to actual areas of construction based on our review of existing plans. Proposed borings are shown on the engineering design plans included as Appendix A. For example, borings are proposed in areas where soil will be cut for installation of tracks or stormwater management ditches or basins. Ms. Carolyn Minnich September 25, 2014 Page 3 S:\AAA-Master Projects\Charlotte Area Transit System (CAT)\CAT-003 BLE\NSIF Assessment\Delineation Sampling Work Plan\NSIF EMP Addendum.docx One sample from each of the borings will be collected based on field screening results. Generally, construction cut depths are less than five ft bgs. Therefore, if no significant impacts are identified by field screening, then a sample will be collected from a 1 or 2-foot interval between 0 and 5 ft bgs. Each of the samples will be analyzed for volatile organic compounds (VOCs), semi-volatile organic compounds (SVOCs), and Hazardous Substance List (HSL) Metals plus hexavalent chromium and barium using the methods outlined in the EMP. Barium is typically needed for landfill profiling, and the data that is collected may be needed to update the landfill profile. The sampling methodology utilized will be the same as that defined in the approved EMP. Screening criteria for this evaluation will be as noted in Section 2.0 of this EMP Addendum. This approach will ensure that soils meet the Inactive Hazardous Sites Branch (IHSB) residential preliminary soil remediation goals (PSRGs), unless naturally occurring metals are present above such goals. As noted previously, a report summarizing both the August 2014 sampling event and this additional sampling event will be submitted to DENR. In addition to the information required by the EMP, the report will include a revised soil management plan figure for DENR Brownfields approval. 4.0 Field Screening of Non-Impacted Areas This field screening methodology applies to the non-impacted areas, as defined on the attached soil management plan figure. The City will have environmental personnel field screening during soil grading activities to observe the soil for potential contamination that may not have been identified based on the grab soil samples. Environmental field staff will be on-site during grading or other soil disturbance at the property. The field staff will be observant for changes in soil conditions. These conditions could include observations of coal ash or fragments, color change, buried waste materials, or suspect debris (including battery parts). In addition, the soil Ms. Carolyn Minnich September 25, 2014 Page 4 S:\AAA-Master Projects\Charlotte Area Transit System (CAT)\CAT-003 BLE\NSIF Assessment\Delineation Sampling Work Plan\NSIF EMP Addendum.docx will be screened using a photoionization detector (PID). If suspected soil or waste materials are encountered in the non-impacted areas, they will be sampled to confirm the presence of contamination and/or managed in accordance with the EMP. The outlines defined on the soil management plan figure may be revised based on the above outlined additional environmental assessment. If revised, the plan and data will be submitted for DENR Brownfields review and approval prior to implementation. The impacted and non- impacted soil areas will be marked in the field using surveying techniques so that the contractor and the environmental field staff will be able to identify the boundaries easily. Thank you for your review of this EMP Addendum. In that mass soil grading is imminent, we would appreciate your prompt review of the Addendum. Please contact us with any questions you may have. Sincerely, Hart & Hickman, PC Joselyn Harriger, PG Matt Bramblett, PE Senior Project Geologist Principal Cc: Mr. David Wolfe, PE, City of Charlotte (PDF by email) Ta b l e 1 Su m m a r y o f T e m p o r a r y M o n i t o r i n g W e l l C o n s t r u c t i o n a n d G r o u n d w a t e r E l e v a t i o n D a t a No r f o l k S o u t h e r n I n t e r m o d a l F a c i l i t y Ch a r l o t t e , N o r t h C a r o l i n a H& H J o b N o . C A T - 0 0 3 TM W - 1 95 . 1 5 25 2 0 1 3 . 0 0 1 1 . 9 5 8 2 . 1 5 TM W - 2 95 . 8 2 30 1 5 2 4 . 3 4 2 3 . 9 4 7 1 . 4 8 TM W - 3 96 . 1 3 30 2 0 2 1 . 8 8 2 1 . 2 2 7 4 . 2 5 TM W - 4 95 . 5 8 30 2 0 1 1 . 6 5 1 1 . 2 5 8 3 . 9 3 TM W - 5 95 . 6 1 25 1 5 3 . 0 5 1 . 7 5 9 2 . 5 6 TM W - 6 96 . 5 9 6 5 2 . 9 5 1 . 7 6 9 3 . 6 4 TM W - 7 95 . 6 1 25 1 5 3 . 8 2 2 . 3 3 9 1 . 7 9 TM W - 8 10 0 . 3 4 27 1 5 1 1 . 3 3 1 0 . 4 6 8 9 . 0 1 TM W - 9 10 2 . 8 7 30 1 5 1 5 . 8 5 1 5 . 3 3 8 7 . 0 2 TM W - 1 0 10 4 . 0 3 25 1 5 1 7 . 9 2 1 7 . 1 9 8 6 . 1 1 TM W - 1 1 10 4 . 3 0 25 1 5 1 2 . 1 1 1 1 . 2 8 9 2 . 1 9 No t e s : TO C = t o p o f c a s i n g W e l l I D TO C El e v a t i o n (f t ) Sc r e e n Le n g t h To t a l D e p t h (f t b e l o w TO C ) Gr o u n d w a t e r El e v a t i o n ( f t ) De p t h t o W a t e r (f t b e l o w g r o u n d su r f a c e ) De p t h t o W a t e r (f t b e l o w T O C ) Au g u s t 2 0 1 4 S:\ A A A - M a s t e r P r o j e c t s \ C h a r l o t t e A r e a T r a n s i t S y s t e m ( C A T ) \ C A T - 0 0 3 B L E \ N S I F A s s e s s m e n t \ R e p o r t \ T a b l e s \ D a t a T a b l e s 0 9 . 1 0 . 2 0 1 4 9/ 2 5 / 2 0 1 4 Table 1 (Page 1 of 1)Hart & Hickman, PC Ta b l e 2 ( P a g e 1 o f 1 ) Su m m a r y o f S o i l A n a l y t i c a l D a t a No r f o l k S o u t h e r n I n t e r m o d a l F a c i l i t y Ch a r l o t t e , N o r t h C a r o l i n a H& H J o b N o . C A T - 0 0 3 S a m p l e I D DP T - 1 D P T - 2 D P T - 3 D P T - 4 D P T - 5 D P T - 6 D P T - 7 D P T - 8 D P T - 9 D P T - 1 0 D P T - 1 1 D P T - 1 1 D P T - 1 2 D P T - 1 3 D P T - 1 4 D P T - 1 5 D P T - 1 6 D P T - 1 7 D e p t h ( f t b g s ) 0- 2 4 - 6 0 - 2 2 - 4 0 - 2 4 - 6 0 - 2 4 - 6 2 - 4 0 - 2 2 - 4 6 - 8 2 - 4 2 - 4 2 - 4 3 - 4 4 - 6 0 - 2 Sa m p l e D a t e Pr o t e c t i o n o f Gr o u n d w a t e r PS R G s 1 In d u s t r i a l PS R G s 2 Ba c k g r o u n d Me t a l s R a n g e 3 Ba c k g r o u n d Me t a l s Me a n 3 DE N R U S T Ac t i o n L e v e l 8/1 3 / 2 0 1 4 8 / 1 2 / 2 0 1 4 8 / 1 2 / 2 0 1 4 8 / 1 2 / 2 0 1 4 8 / 1 2 / 2 0 1 4 8 / 1 3 / 2 0 1 4 8 / 1 3 / 2 0 1 4 8 / 1 3 / 2 0 1 4 8 / 1 4 / 2 0 1 4 8 / 1 4 / 2 0 1 4 8 / 1 4 / 2 0 1 4 8 / 1 4 / 2 0 1 4 8 / 1 4 / 2 0 1 4 8 / 1 4 / 2 0 1 4 8 /14/2014 8 / 1 3 / 2 0 1 4 8 / 1 2 / 2 0 1 4 8 / 1 2 / 2 0 1 4 U n i t s ( m g / k g ) ( m g / k g ) ( m g / k g ) ( m g / k g ) ( m g / k g ) ( m g / k g ) ( m g / k g ) ( m g / k g ) ( m g / k g ) ( m g / k g ) ( m g / k g ) ( m g / k g ) ( m g / k g ) ( m g / k g ) ( m g / k g ) ( m g / k g ) ( m g / k g ) ( m g/kg) ( m g / k g ) ( m g / k g ) ( m g / k g ) ( m g / k g ) ( m g / k g ) Ex t r a c t a b l e P e t r o l e u m H y d r o c a r b o n s (MA D E P E P H ) 4 C1 1 - C 2 2 a r o m a t i c s 3 1 1 2 , 2 6 4 -- - - - - < 1 3 N A N A N A 14 NA N A N A < 1 3 N A N A N A N A < 1 1 N A N A N A N A Vo l a t i l e E x t r a c t a b l e H y d r o c a r b o n s (M A D E P V P H ) -- - - - - - - - - NA N A N A N A N D N A N A N D N A N A N A N A N A N A N A N A N A N A Die s e l R a n g e O r g a n i c s ( 8 0 1 5 C ) Die s e l R a n g e O r g a n i c s -- - - - - - - 10 NA N A N A N A N A N A N A N A N A N A N A 260AC NA N A N A N A N A N A PC B s ( 8 0 8 2 A ) -- - - - - - - - - ND N A N A N A N A N A N A N A N D N A N A N A N A N A N A N D N A N A VO C s ( 8 2 6 0 B ) Ac e t o n e 2 4 1 0 0 , 0 0 0 -- - - - - < 0 . 0 5 0 < 0 . 0 5 3 < 0 . 0 3 9 < 0 . 0 4 6 N A < 0 . 0 5 7 < 0 . 0 4 3 < 0 . 0 5 9 < 0 . 0 4 6 < 0 . 0 5 0 0.059 0 . 2 6 < 0.046 < 0 . 0 4 7 0.51 < 0.054 < 0 . 0 4 8 0.11 1, 4 - D i o x a n e ( 8 2 6 0 S I M ) -- - - - - - - - - ND N A N A N A N A N A N A N A N A N A N D N D N A N A N A N A N A N A SV O C s ( 8 2 7 0 C ) 1- M e t h y l n a p h t h a l e n e 0 . 0 6 5 3 -- - - - - < 0 . 4 1 < 0 . 4 5 < 0 . 4 0 < 0 . 3 9 N A < 0 . 4 0 < 0 . 3 5 N A < 0 . 4 2 < 0 . 4 0 < 0 . 4 0 < 0 . 4 3 < 0 . 4 2 < 0 . 3 6 < 0 . 4 0 < 0 . 4 3 0.72 < 0.39 2- M e t h y l n a p h t h a l e n e 1 . 6 0 3 7 0 -- - - - - < 0 . 4 1 < 0 . 4 5 < 0 . 4 0 < 0 . 3 9 N A < 0 . 4 0 < 0 . 3 5 N A < 0 . 4 2 < 0 . 4 0 < 0 . 4 0 < 0 . 4 3 < 0 . 4 2 < 0 . 3 6 < 0 . 4 0 < 0 . 4 3 1.1 < 0.39 Be n z o ( a ) a n t h r a c e n e 0 . 1 8 2 . 1 -- - - - - < 0 . 4 1 < 0 . 4 5 < 0 . 4 0 < 0 . 3 9 N A 0.4 7 < 0 . 3 5 N A < 0 . 4 2 < 0 . 4 0 < 0 . 4 0 < 0 . 4 3 < 0 . 4 2 < 0 . 3 6 < 0 . 4 0 < 0 . 4 3 < 0 . 3 9 < 0 . 3 9 Be n z o ( a ) p y r e n e 0 . 0 6 0 . 2 1 -- - - - - < 0 . 4 1 < 0 . 4 5 < 0 . 4 0 < 0 . 3 9 N A 0.4 6 < 0 . 3 5 N A < 0 . 4 2 < 0 . 4 0 < 0 . 4 0 < 0 . 4 3 < 0 . 4 2 < 0 . 3 6 < 0 . 4 0 < 0 . 4 3 < 0 . 3 9 < 0 . 3 9 Be n z o ( b ) f l u o r a n t h e n e 0 . 6 0 2 . 1 -- - - - - < 0 . 4 1 0. 4 9 < 0 . 4 0 < 0 . 3 9 N A 0.6 3 < 0 . 3 5 N A < 0 . 4 2 < 0 . 4 0 < 0 . 4 0 < 0 . 4 3 < 0 . 4 2 < 0 . 3 6 < 0 . 4 0 < 0 . 4 3 0.44 < 0.39 Ch r y s e n e 1 8 2 1 0 -- - - - - < 0 . 4 1 < 0 . 4 5 < 0 . 4 0 < 0 . 3 9 N A 0.6 1 < 0 . 3 5 N A < 0 . 4 2 < 0 . 4 0 < 0 . 4 0 < 0 . 4 3 < 0 . 4 2 < 0 . 3 6 < 0 . 4 0 < 0 . 4 3 < 0 . 3 9 < 0 . 3 9 Flu o r a n t h e n e 3 3 0 4 , 4 0 0 -- - - - - < 0 . 4 1 0. 8 3 < 0 . 4 0 < 0 . 3 9 N A 1. 1 < 0 . 3 5 N A < 0 . 4 2 < 0 . 4 0 < 0 . 4 0 < 0 . 4 3 < 0 . 4 2 < 0 . 3 6 0.94 < 0.43 0.62 < 0.39 Na p h t h a l e n e 0 . 2 1 1 8 -- - - - - < 0 . 4 1 < 0 . 4 5 < 0 . 4 0 < 0 . 3 9 N A < 0 . 4 0 < 0 . 3 5 N A < 0 . 4 2 < 0 . 4 0 < 0 . 4 0 < 0 . 4 3 < 0 . 4 2 < 0 . 3 6 < 0 . 4 0 < 0 . 4 3 0.85 < 0.39 Ph e n a n t h r e n e 6 8 N S -- - - - - < 0 . 4 1 0. 4 9 < 0 . 4 0 < 0 . 3 9 N A 1. 3 < 0 . 3 5 N A < 0 . 4 2 < 0 . 4 0 < 0 . 4 0 < 0 . 4 3 < 0 . 4 2 < 0 . 3 6 0.73 < 0.43 0.73 < 0.39 Py r e n e 2 2 0 3 , 4 0 0 -- - - - - < 0 . 4 1 0. 6 7 < 0 . 4 0 < 0 . 3 9 N A 0.9 7 < 0 . 3 5 N A < 0 . 4 2 < 0 . 4 0 < 0 . 4 0 < 0 . 4 3 < 0 . 4 2 < 0 . 3 6 0.66 < 0.43 0.56 < 0.39 HS L M e t a l s ( 6 0 1 0 B / 7 4 7 1 A 5 ) Ar s e n i c 6 2 . 4 1 . 0 - 1 8 4 . 8 - - < 1 . 9 15 2. 6 1 4 NA 37 NA N A 3. 4 2 . 7 < 1.8 2.8 NA < 1 . 7 4.9 < 1.9 13 < 1.7 58 0 3 8 , 0 0 0 5 0 - 1 0 0 0 3 5 6 7 9 9 3 6 3 8 4 NA 17 0 NA N A 96 4 7 3 4 1 0 0 NA 55 1 8 0 2 5 0 6 7 9 5 Be r y l l i u m 6 3 4 0 0 < 1 - 1 5 0 . 9 2 - - 0 . 3 6 0 . 6 6 0 . 7 1 0 . 5 7 NA 0. 7 3 NA N A 0.7 5 0 . 3 5 0 . 4 8 0 . 7 5 NA < 0 . 2 8 0.95 1 . 8 0 . 3 3 0 . 5 5 Ca d m i u m 3 1 6 0 1 . 0 - 1 0 4 . 3 - - < 0 . 3 1 < 0 . 3 5 < 0 . 3 0.3 4 NA 0. 3 2 NA N A < 0 . 3 2 < 0 . 3 1 < 0 . 3 0 < 0 . 3 2 N A < 0 . 2 8 < 0 . 3 0 < 0 . 3 2 < 0 . 3 < 0 . 2 9 Ch r o m i u m 3 6 0 , 0 0 0 1 0 0 , 0 0 0 7 - 3 0 0 6 5 - - 2 5 0 4 5 7 4 3 4 NA 27 NA N A 59 3 3 5 0 1 7 NA 32 4 2 7 1 2 9 6 8 Co p p e r 7 0 0 8 2 0 0 3 - 1 0 0 3 4 - - 7 6 5 1 3 9 5 8 NA 59 NA N A 68 3 1 6 5 2 8 NA 29 6 4 8 7 4 8 6 8 Le a d 2 7 0 8 0 0 N D - 5 0 1 6 - - 1 . 9 3 0 8 . 9 3 9 NA 14 0 NA N A 13 3 . 9 7 . 3 2 7 NA 2.8 2 7 1 . 7 4 0 3 . 6 Ma n g a n e s e 6 5 4 , 6 0 0 - - 9 0 0 - - 1 2 0 0 73 0 B H , B 16 0 B H , B 29 0 B H , B NA 11 0 0 NA N A 22 0 0 B 170 B 400 B 430 B NA 190 B 4500 B 1400 160 BH, B 690 BH, B Me r c u r y 1 3 . 1 0 . 0 3 - 0 . 5 2 0 . 1 2 1 - - < 0 . 0 2 5 0. 0 5 4 < 0 . 0 2 3 0.1 7 NA 0. 5 6 NA N A 0.0 4 < 0.024 0.08 0 . 0 3 NA < 0 . 0 2 1 0.044 < 0.027 0.14 < 0.023 Nic k e l 1 3 0 4 , 0 0 0 N D - 1 5 0 2 3 - - 1 1 0 2 2 1 9 1 6 NA 17 NA N A 21 2 4 1 7 2 1 NA 18 1 8 1 1 0 1 3 4 0 Se l e n i u m 2 . 1 1 , 0 0 0 < 1 . 0 - 0 . 8 0 . 4 2 - - < 1 . 3 < 1 . 4 < 1 . 2 < 1 . 2 N A < 1 . 2 N A N A < 1 . 3 A < 1 . 2 A < 1 . 2 < 1 . 3 A N A < 1 . 1 A < 1 . 2 < 1 . 3 < 1 . 2 < 1 . 2 Zin c 1 , 2 0 0 6 2 , 0 0 0 2 5 - 1 2 4 5 6 - - 7 4 7 4 2 9 1 2 0 NA 14 0 NA N A 40 3 1 4 0 4 9 NA 28 8 3 1 2 0 7 8 5 8 He x a v a l e n t C h r o m i u m ( 7 1 9 6 ) -- - - - - - - - - ND N D N D N D N A N D N A N A N D N D N D N D N A N D N D N D N D N D TC L P M e t a l s ( 6 0 1 0 C ) ( m g / L ) Ch r o m i u m <0 . 2 5 N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A Le a d -- - - - - - - - - NA N A N A N A N A < 0 . 0 5 0 N A N A N A N A N A N A N A N A N A N A N A N A No t e s : 1) N C D e p a r t m e n t o f E n v i r o n m e n t a n d N a t u r a l R e s o u r c e s ( D E N R ) I n a c t i v e H a z a r d o u s S i t e s B r a n c e ( I H S B ) P r o t e c t i o n o f G r o u n d w a t e r P r e l i m i n a r y S o i l R e m e d i a t i o n G o a l s - J a n u a r y 2 0 1 4 I n a c t i v e H a z a r d o u s S i t e s B r a n c e ( I H S B ) P r o t e c t i o n o f G r o u n d w a t e r P r e l i m i n a r y S o i l 2) D E N R I H S B P r e l i m i n a r y I n d u s t r i a l S o i l R e m e d i a t i o n G o a l - A u g u s t 2 0 1 4 3) B a c k g r o u n d c o n c e n t r a t i o n s f o r m e t a l s ( e x c e p t m a n g a n e s e a n d b e r y l l i u m ) o b t a i n e d f r o m D r a g u n , J a m e s P h D . A n d K h a l e d C h e k i r i P h D. E l e m e n t s i n N o r t h A m e r i c a n S o i l s , 2 n d E d i t i o n 2 0 0 5 f o r N C S o i l s , u n l e s s n o t a v a i l a b l e t h e n e i t h e r e a s t e r n , s o u t h e a s t e r n , o r c o n t e r mi n o u s U S c o n c e n t r a t i o n s u t i l i z e d . B a c k g r o u n d c o n c e n t r a t i o n s f o r m a n g a n e s e o b t a i n e d f r o m A g e n c y f o r T o x i c S u b s t a n c e s a n d D i s e a s e R e g i s t r y ( A T S D R ) . To x i c o l o g i c a l P r o f i l e f o r M a n g a n e s e ( U p d a t e ) . D r a f t f o r P u b l i c C o m m e n t . U . S . P u b l i c H e a l t h S e r v i c e , U . S . D e p a r t m e n t o f H e a l t h a n d H u m a n S e r v i c e s , A t l a n t a , G A . 1 9 9 7 . B a c k g r o u n d c o n c e n t r a t i o n s f o r b e r y l l i u m o b t a i n e d f r o m U S G S P r o f e s s i o n a l P e p e r 1 2 7 0 . Ele m e n t C o n c e n t r a t i o n s i n S o i l s a n d O t h e r S u r f i c i a l M a t e r i a l s o f t h e C o n t e r m i n o u s U n i t e d S t a t e s , 1 9 8 4 . 4) S c r e e n i n g C r i t e r i a f r o m D E N R U S T M a x i m u m S o i l C o n t a m i n a n t C o n c e n t r a t i o n L e v e l s ( M S C C s ) f o r P r o t e c t i o n o f G r o u n d w a t e r o r I n d u s t r i a l / C o m m e r c i a l S o i l C l e a n u p L e v e l 5) M e r c u r y a n a l y z e d b y E P A M e t h o d 7 4 7 1 A On l y t h o s e c o m p o u n d s d e t e c t e d i n a t l e a s t o n e s a m p l e s h o w n a b o v e Gr e y f o n t i n d i c a t e s a n o n - d e t e c t v a l u e Bo l d in d i c a t e s a n e x c e e d a n c e o f t h e i n d u s t r i a l P S R G o r D E N R U S T A c t i o n L e v e l Un d e r l i n e d in d i c a t e s a n e x c e d a n c e o f t h e P r o t e c t i o n o f G r o u n d w a t e r P S R G Gr e y s h a d i n g i n d i c a t e s m e t a l c o n c e n t r a t i o n e x c e e d s 2 x t h e B a c k g r o u n d M e t a l s M e a n VO C s = v o l a t i l e o r g a n i c c o m p o u n d s ; S V O C s = s e m i - v o l a t i l e o r g a n i c c o m p o u n d s TP H = t o t a l p e t r o l e u m h y d r o c a r b o n s ; P C B s = p o l y c h l o r i n a t e d b i p h e n y l s NS = s c r e e n i n g c r i t e r i a n o t s p e c i f i e d ; N A = n o t a n a l y z e d ( G r e y ) ; - - = N o t a p p l i c a b l e B= A n a l y t e i s f o u n d i n t h e a s s o c i a t e d b l a n k a t a c o n c e n t r a t i o n > 1 / 2 R L AC = S a m p l e w a s a d d e d t o b a c k l o g a n d p r e p p e d / a n a l y z e d o u t s i d e o f h o l d t i m e ND = N o n d e t e c t i n s a m p l e s f o r a n y c o n s t i t u e n t s u n d e r h e a d i n g mg / k g = m i l l i g r a m s p e r k i l o g r a m Sc r e e n i n g C r i t e r i a S: \ A A A - M a s t e r P r o j e c t s \ C h a r l o t t e A r e a T r a n s i t S y s t e m ( C A T ) \ C A T - 0 0 3 B L E \ N S I F A s s e s s m e n t \ R e p o r t \ T a b l e s \ D a t a T a b l e s 0 9 . 1 0 . 2 0 1 4 9/2 5 / 2 0 1 4 Table 2 (Page 1 of 1)Hart & Hickman, PC Ta b l e 3 ( P a g e 1 o f 1 ) Su m m a r y o f G r o u n d w a t e r A n a l y t i c a l D a t a No r f o l k S o u t h e r n I n t e r m o d a l F a c i l i t y Ch a r l o t t e , N o r t h C a r o l i n a H& H J o b N o . C A T - 0 0 3 S a m p l e I D T M W - 1 TM W - 1 Fil t e r e d TM W - 2 T M W - 3 T M W - 4 T M W - 5 T M W - 6 T M W - 7 T M W - 8 T M W - 9 TMW-9 Filtered TMW-10 T M W - 1 1 Sa m p l e D a t e 2L G r o u n d w a t e r Qu a l i t y S t a n d a r d 1 V a p o r I n t r u s i o n Gr o u n d w a t e r Sc r e e n i n g L e v e l 2 8/ 1 2 & 13 / 2 0 1 4 8/1 3 / 2 0 1 4 8 / 1 3 / 2 0 1 4 8 / 1 3 / 2 0 1 4 8 / 1 4 / 2 0 1 4 8 / 1 5 / 2 0 1 4 8 / 1 5 / 2 0 1 4 8 / 1 5 / 2 0 1 4 8 / 1 5 / 2 0 1 4 8 / 1 5 / 2 0 1 4 8 / 1 5 / 2 0 1 4 8 / 1 8 / 2 0 1 4 8 / 1 8 / 2 0 1 4 U n i t s ( u g / L ) ( u g / L ) ( u g / L ) ( u g / L ) ( u g / L ) ( u g / L ) ( u g / L ) ( u g / L ) ( u g / L ) ( u g / L ) ( u g / L ) ( u g / L ) ( u g / L ) ( u g / L ) ( u g / L ) PC B s ( 8 0 8 2 A ) -- - - NA N A N A N A N A N D N A N D N A N A N A N D N A VO C s ( 8 2 6 0 B ) Ch l o r o f o r m 7 0 3 5 . 5 < 0 . 5 0 N A < 0 . 5 0 < 0 . 5 0 < 0 . 5 0 0. 9 5 < 0 . 5 0 0. 6 4 < 0 . 5 0 0. 8 5 NA < 0 . 5 0 < 0 . 5 0 ci s - 1 , 2 - d i c h l o r o e t h y l e n e 6 0 3 0 . 4 < 0 . 5 0 N A < 0 . 5 0 2. 0 1 . 4 < 0 . 5 0 < 0 . 5 0 < 0 . 5 0 < 0 . 5 0 < 0 . 5 0 N A < 0 . 5 0 < 0 . 5 0 Te t r a c h l o r o e t h y l e n e 0 . 7 4 8 . 4 < 0 . 5 0 N A < 0 . 5 0 0. 5 5 0. 8 6 0 . 7 1 < 0 . 5 0 < 0 . 5 0 < 0 . 5 0 67 NA < 0 . 5 0 0.73 Tr i c h l o r o e t h y l e n e 3 4 . 4 1 . 5 NA < 0 . 5 0 6. 6 8. 1 0. 6 3 < 0 . 5 0 0. 5 4 < 0 . 5 0 1. 4 NA < 0 . 5 0 < 0 . 5 0 SV O C s ( 8 2 7 0 C ) -- - - ND N A N D N D N D N D N D N D N A N D N A N D N D RC R A M e t a l s (6 0 1 0 B / 7 4 7 1 A 3 ) Ar s e n i c 1 0 - - 1 . 6 < 1 . 0 < 1 . 0 < 1 . 0 < 1 . 0 < 1 . 0 < 1 . 0 < 1 . 0 N A < 1 . 0 < 1 . 0 < 1 . 0 < 1 . 0 Ch r o m i u m 1 0 - - 5 . 3 < 1 . 0 < 1 . 0 < 1 . 0 < 1 . 0 5. 7 4 . 0 11 NA < 1 . 0 2.8 < 1.0 1.2 Co p p e r 1 , 0 0 0 - - 7 . 3 < 5 . 0 31 7 . 6 5 . 8 < 5 . 0 7. 0 < 5 . 0 N A < 5 . 0 7.3 1 1 5 . 8 Le a d 1 5 - - 8 . 6 < 1 . 0 < 1 . 0 < 1 . 0 < 1 . 0 < 1 . 0 < 1 . 0 < 1 . 0 N A < 1 . 0 1.2 < 1.0 < 1 . 0 Ma n g a n e s e 5 0 - - 28 0 2 7 0 1 0 0 0 4 5 0 7 0 21 6 . 2 29 0 NA 65 0 6 4 0 1 2 0 0 5 4 0 Nic k e l 1 0 0 - - 2 . 5 < 2 . 0 6. 9 8 . 2 < 2 . 0 3. 3 < 2 . 0 12 NA 3. 8 4 . 7 4 . 4 7 . 6 Se l e n i u m 2 0 - - < 1 . 0 < 1 . 0 A A < 1 . 0 1. 2 < 1 . 0 A A 1. 8 A B 1 . 3 A B < 1 . 0 A B N A < 1 . 0 A B 1.1 < 1.0 AA 1.6 AA Zin c 1 , 0 0 0 - - 1 7 1 1 2 5 6 3 <1 0 < 1 0 < 1 0 20 NA 20 3 0 8 0 4 4 Fie l d P a r a m e t e r s Te m p e r a t u r e ( o C) -- - - 3 2 . 4 8 3 2 . 4 8 3 2 . 6 3 3 . 8 8 3 7 . 3 2 3 1 . 8 8 3 1 . 9 4 3 5 . 3 2 3 1 . 3 2 3 3 . 1 8 3 3 . 1 8 2 7 . 8 6 3 0 . 1 5 pH - - - - 6 . 7 6 . 7 6 . 2 3 6 . 6 6 . 7 4 7 . 0 6 9 . 9 5 5 . 7 3 5 . 9 2 7 . 2 7 7 . 2 7 7 . 0 2 6 . 6 9 Co n d u c t i v i t y ( µm / s e c ) -- - - 0 . 3 9 0 . 3 9 0 . 4 9 7 0 . 4 0 1 0 . 4 7 3 0 . 4 5 6 0 . 2 5 9 0 . 4 2 0 . 3 3 9 0 . 5 4 3 0 . 5 4 3 0 . 6 8 6 0 . 4 7 3 Tu r b i d i t y ( N T U ) - - - - 1 9 5 1 9 5 5 . 1 2 1 1 . 9 6 . 4 2 0 . 1 6 . 3 4 1 5 . 4 2 6 2 6 2 . 4 4 . 3 No t e s : 1) N C A C 0 2 L G r o u n d w a t e r Q u a l i t y S t a n d a r d s ( A p r i l 2 0 1 3 ) 2) D i v i s i o n o f W a s t e M a n a g e m e n t N o n - R e s i d e n t i a l V a p o r I n t r u s i o n G r o u n d w a t e r S c r e e n i n g L e v e l 3) M e r c u r y a n a l y z e d b y E P A M e t h o d 7 4 7 1 A On l y t h o s e c o m p o u n d s d e t e c t e d i n a t l e a s t o n e s a m p l e s h o w n a b o v e Bo l d in d i c a t e s a n e x c e e d a n c e o f t h e 2 L s t a n d a r d Un d e r l i n e d in d i c a t e s a n e x c e d a n c e o f t h e V a p o r I n t r u s i o n G r o u n d w a t e r S c r e e n i n g L e v e l Me t h o d n u m b e r f o l l o w s p a r a m e t e r i n p a r e n t h e s i s VO C s = v o l a t i l e o r g a n i c c o m p o u n d s ; S V O C s = s e m i - v o l a t i l e o r g a n i c c o m p o u n d s RC R A = R e s o u r c e C o n s e r v a t i o n R e c o v e r y A c t ; µ g / L = m i c r o g r a m s p e r l i t e r NA = n o t a n a l y z e d N D = n o n d e t e c t ; u g / L = m i c r o g r a m s p e r l i t e r AA / A B = M e t h o d B l a n k i s g r e t h e r t h a n 1 / 2 o f t h e r e p o r t i n g l i m i t . Sc r e e n i n g C r i t e r i a S:\ A A A - M a s t e r P r o j e c t s \ C h a r l o t t e A r e a T r a n s i t S y s t e m ( C A T ) \ C A T - 0 0 3 B L E \ N S I F A s s e s s m e n t \ R e p o r t \ T a b l e s \ D a t a T a b l e s 0 9 . 1 0 . 2 0 1 4 9/2 5 / 2 0 1 4 Table 3 (Page 1 of 1)Hart & Hickman, PC TITLE PROJECT SITE LOCATION MAP NORFOLK SOUTHERN INTERMODAL FACILITY CHARLOTTE, NORTH CAROLINA DATE: JOB NO: REVISION NO: FIGURE NO: 9/9/2014 0 1CAT-003 0 2000 4000N APPROXIMATE SCALE IN FEET U.S.G.S. QUADRANGLE MAP QUADRANGLE 7.5 MINUTE SERIES (TOPOGRAPHIC) Charlotte East, 2013 SITE S:\AAA-Master Projects\Charlotte Area Transit System (CAT)\CAT-003 BLE\NSIF Assessment\Delineation Sampling Work Plan\NSIF EMP Addendum.docx Appendix A Proposed Soil Boring Locations