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HomeMy WebLinkAbout10036_South End Transit_Proposed Soil Mgmt Plan_20121023 PROPOSED CAMDEN SOUTHLINE MULTI-FAMILY DEVELOPMENT SOIL MANAGEMENT PLAN BROWNFIELDS PROJECT NUMBER 10036-06-60 CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA Bryan M. Lucas Senior Project Manager Prepared for Fund Southline, LLC 1420 SPRING HILL ROAD SUITE 200 MCLEAN, VIRGINIA 22102 Paul Wachsmuth Principal Consultant Prepared by Professional Service Industries, Inc. 5021-A West WT Harris Boulevard Charlotte, North Carolina 28269 Telephone (704) 598-2234 October 23, 2012 PSI Project 0457214-4 SOIL MANAGEMENT PLAN Proposed Camden One Multi-Family Development Brownfields Agreement (BFA) 10036-06-60 dated July 8, 2011 and recorded July 13, 2011, concerns a 22.41-acre assemblage in Charlotte, North Carolina that Cherokee Southline, LLC proposes to put to mixed commercial, high-density residential and recreational use, with associated parking and landscaped areas. Fifteen parcels were assembled for the Brownsfield Agreement; the right-of-way easement of the City of Charlotte’s light rail line separates, in a north-south direction, parcels facing Dunavant Street from those facing South Boulevard. Refer to Figure 1 for site location. The subject property of the proposed Camden Southline Multi-Family Development consists of two (2) contiguous taxable parcels of land that are part of the larger land area designated for redevelopment and subject to the Brownfields Agreement. The subject property encompasses approximately 3.66 acres, and is referenced by Mecklenburg County Parcel Identification Numbers 12104120 and 12103103. Addresses associated with the subject property include 2316 South Boulevard, and 2300 South Boulevard. Refer to Figure 2 for site vicinity map. The subject property currently has no existing structures, with remnants of demolished building foundations, paved surfaces, and concrete rubble. As described below, certain environmental impacts have been identified within the soil on these parcels. Therefore, the contractor must adhere to the soil management protocols outlined herein during redevelopment activities at the subject site. Project Background Cherokee Southline, LLC completed eighteen (18) Phase I Environmental Site Assessments (ESAs) and nine (9) Phase II ESAs on the larger land area consisting of fifteen (15) parcels of land (including the 2 parcels of the subject property) as shown in Figure 3. During the completion of the Phase II ESAs, soil samples were collected and analyzed to determine whether the historical commercial use of the properties had affected the soil at the subject property. Soil samples were collected and analyzed for volatile organic compounds (VOCs), total petroleum hydrocarbons (TPH) – gasoline range organics (GRO), and TPH – diesel range organics (DRO), RCRA 8 Metals and/or semi-volatile organic compounds (SVOCs). Groundwater samples were also collected at the subject property. The groundwater samples collected on the subject property were analyzed for VOCs, SVOCs, and/or RCRA 8 Metals. The analytical results of the soil samples collected on the subject property indicated that the northern portion of the subject property included an area with Proposed Camden Southline Development Soil Management Plan Brownfields Agreement 10036-06-60 October 19, 2012 2 concentrations of total chromium above the prior Inactive Hazardous Site Branch (IHSB) Residential Soil Remediation Goal (SRG) for total chromium (36 parts per million of chromium in WS-SB-9 at 2-4 feet below ground surface) and one area of soil with residual petroleum impact (WS-HA-10 at 0-2 feet below ground surface). PSI has collected a soil sample in the vicinity of WS-SB-9 on October 18, 2012, and submitted it for analysis for trivalent chromium and hexavalent chromium via EPA Method 6010C. The results of this soil sample will be submitted to DENR in the next ten days. For purposes of this soil management plan, it has been assumed that the levels of speciated chromium in this soil sample do not exceed IHSB Residential SRGs; therefore, soils in the vicinity of WS-SB-9 shall not be treated as an area of concern. In the event that levels of speciated chromium in this soil sample exceed IHSB Residential SRGs, an amendment will be filed to this soil management plan adding WS-SB-9 as an area of concern. Low levels of solvents were present in groundwater samples collected from monitoring wells in the northwest portion of the subject property (WS-GW-8 and WS-GW-6). It is believed that these solvents are originating from off-site sources. Low levels of tetrachloroethylene (2.7 ppb) were also once detected in a monitoring well (2316 Well) on the southern portion of the subject property. Low levels of DRO (16 ppm) was detected in WS-SB-3 at six to eight feet below ground surface during Phase II activities in October 2006. Subsequently, a fuel oil underground storage tank was removed from this area in 2007. Soil samples collected at the base of the UST basin did not detect any DRO at 12 feet below the ground surface in excess of 10 ppm. Thus, soils in the vicinity of WS-SB-3 are not considered an area of concern. Based on review of the preliminary grading plans provided by Fund Southline, LLC, cut and fill activities will be utilized across the subject property to establish finish grade. In addition, between 15,000 cubic yards to 20,000 cubic yards of additional fill will be placed on the site to complete the grading activities. The areas of cut are proposed to be above the existing groundwater table, so saturated soil should not be disturbed. In addition, once the site has been brought to grade and construction of the buildings and installation of underground utilities begin, saturated soil is not anticipated to be encountered. However, in the event saturated soil is encountered during excavation activities they are to be handled as outlined in this soil management plan. Figure 3 depicts the approximate location where residual petroleum (WS-HA-10) may be encountered during redevelopment activities. Redevelopment activities are expected to predominantly occur in unsaturated soils above the water table. A summary of historical soil analytical results are provided in Attachment A. Proposed Camden Southline Development Soil Management Plan Brownfields Agreement 10036-06-60 October 19, 2012 3 Summary of Additional Assessment Since the Brownfields Agreement Between May 2012 and July 2012, PSI completed a Phase I ESA, completed a geotechnical evaluation, and conducted a geophysical survey and a ground penetrating radar survey of the subject property (attached in Appendix B). The geophysical survey and ground penetrating radar survey determined that there were six (6) subsurface anomalies on the site of which two (Anomalies 1 and 6) could be possible USTs, as depicted on Figure 3. Fill Import Site development requires importing between 15,000 to 20,000 cubic yards of fill soil from an off-site borrow area. Once a borrow area(s) is/are located, Fund Southline, LLC will file a Soil Management Plan Addendum for approval by DENR regarding the procedures necessary to certify that any imported fill is acceptable to DENR. The number of soil samples collected will be based on the amount of fill soil to be excavated from the borrow pit and as required by DENR. Proposed Construction PSI’s understanding of the proposed construction on these parcels are based on preliminary design drawings which were prepared by ColeJenest & Stone dated September 21, 2012. Specific drawings related to the excavation and handling of soil are presented in Attachment C. If substantial deviations from the design drawings occur during construction, revisions to this soil management plan may be required. Redevelopment activities are expected to predominantly occur in unsaturated soil above the water table. Based on review of the preliminary grading plans provided by Fund Southline, LLC, cut and fill activities will be utilized across the subject property to establish finish grade. In addition, between 15,000 to 20,000 cubic yards of additional fill will be placed on the site to complete the grading activities. This soil is to be provided by an off-site borrow pit. Based on the preliminary site plan and geotechnical assessment conducted on the subject property, the proposed structures will likely have shallow foundations less than five (5) feet in depth. The proposed parking deck may require deep foundations for construction. Soil generated during installation of any deep foundation system implemented will be reused on-site and/or disposed off-site in accordance with this soil management plan Based on the preliminary site plan of the subject property, the majority of the proposed underground utilities will be installed above the groundwater table. Several of the underground utilities may encounter groundwater. Unsaturated soil Proposed Camden Southline Development Soil Management Plan Brownfields Agreement 10036-06-60 October 19, 2012 4 generated during the installation of the underground utilities will be reused on-site and/or disposed of off-site in accordance with this soil management plan. Saturated soil generated during the installation of the underground utilities will be stockpiled on-site and handled in accordance with this soil management plan. Based on the previous environmental assessment conducted at the subject property, one potential areas exist where the on-site soil has or is reasonably likely to have residual petroleum impact (the “Historic Contamination”) in the vicinity of WS-HA-10 in the south central portion of the land parcel located at 2300 South Boulevard from ground surface to two feet beneath the existing ground surface. The contaminants of concern (CoCs) in this area are residual petroleum constituents. In the event any underground storage tanks are actually discovered on the subject property in the vicinity of Anomaly 1 or Anomaly 6 as shown by the geophysical survey and a ground penetrating radar survey, these areas shall also be handled in accordance with applicable UST guidelines. Soil in the immediate vicinity shall be considered Historic Contamination under this soil management plan until such impacts are resolved under the applicable UST guidelines. Potentially Impacted Soil (as defined below) that is displaced during construction activities will be subject to the provisions of the soil management plan. Such potentially impacted soil is in the area of Historical Contamination (referenced above and shown on Figure 3) and any additional areas that may be encountered that have substantial visual or olfactory evidence of impact (the “Potentially Impacted Soil”). Other soil that may be excavated or displaced at the property will not be subject to this soil management plan, unless designated for off-site re-use. When construction activities involve the excavation or disturbance of Potentially Impacted Soil, an Environmental Representative (i.e. environmental personnel trained in the identification, field screening, and sampling of contaminated materials), will observe and monitor using a continuously-reading Photoionization Detection (PID) and/or Flame-ionization Detector (FID) to document the condition of the soil during excavation activities, including identification of potential contamination, and identification of saturated and unsaturated soil. The PID and/or FID will be calibrated at least daily and/or in accordance with manufacturer’s specifications and calibration readings will be recorded in field notes. Based on field screening and visual and olfactory evidence reviewed by the Environmental Representative, the Potentially Impacted Soil will be segregated and stockpiled into Type-1 through Type-5 soils and debris. The Environmental Representative will collect samples of the soil stockpiles for laboratory analysis to evaluate their potential for on-site re-use or off-site disposal as discussed below. Proposed Camden Southline Development Soil Management Plan Brownfields Agreement 10036-06-60 October 19, 2012 5 On-Site Soil Designations Soil will be grouped into the following categories during redevelopment activities at the site: Type-1 – Soil that is not Potentially Impacted Soil (as defined on page 4).  This soil may be excavated or displaced at the property and will not be subject to this soil management plan unless scheduled for off-site re-use or disposal.  In the event of off-site reuse or disposal, Type-1 soil shall be managed in same way as Type-2 soil. Type-2 – Potentially Impacted Soil excavated or disturbed above the water table and deemed to be non-impacted based on visual evidence, olfactory evidence and field screening readings (< or =10 parts per million (PPM) on a PID and/or FID).  This soil may be reused on-site with no further analytical testing or restrictions.  In the event of off-site reuse, such soil will be treated as Type-3 soil.  In the event of off-site disposal, Type-2 soil must be handled as required by applicable laws and regulations. It should be noted, although NCDENR considers the soil to be clean, the off-site disposal facility may require analytical testing on the soil. Type–3 – Potentially Impacted Soil excavated or disturbed above the water table and deemed impacted based on visual evidence of petroleum impact, olfactory evidence of petroleum impact and/or elevated field screening readings (>10 PPM on a PID and/or FID).  If the field screening of Type-3 soil with the PID and/or FID indicates the soil is equal to or less than 10 PPM, the soil can be used on-site with no additional analytical testing or restrictions.  If the PID and/or FID screening of Type-3 soil indicates the soil impact is greater than 10 PPM, the soil will be segregated, stockpiled on-site, and analyzed for CoCs as discussed below. Based on laboratory results, the soil can be handled in one or more of the following ways: o If testing of the soil in the Historic Contamination areas yield less than or equal to 10 ppm TPH using TPH Methods, the soil can be reused on site with no further analytical testing or restrictions. o If no CoCs exceed their respective residential maximum soil contaminant concentrations (MSCCs) established by the UST Section of the Division of Waste Management of DENR, the soil can be reused on-site with no further analytical testing or restrictions. o If one or more of the CoCs exceeds its respective residential MSCC, the soil can be reused on-site under an impervious surface in Proposed Camden Southline Development Soil Management Plan Brownfields Agreement 10036-06-60 October 19, 2012 6 accordance with a plan approved by DENR. Any soil proposed for such reuse shall be sampled and analyzed by Toxic Characteristic Leaching Procedure (TCLP), and no soil that exceeds its respective TCLP limits shall be reused at the Brownfields Property. o If one or more of the CoCs exceed its respective residential MSCCs, the soil may be disposed of off-site at a disposal facility approved or permitted to accept the impacted soil. o Soil that is impacted with CoCs other than petroleum constituents will be reclassified as Type-4 soil (discussed below).  The discovery of Type-3 soil in areas other than those previously discussed in this soil management plan will require notification of the DENR contact listed in the Brownfields Agreement. Type-4 – Any saturated soil and/or Potentially Impacted Soil impacted with CoCs in addition to or other than petroleum constituents (including reclassified construction and organic debris.)  Type-4 soil and debris shall be segregated and stockpiled on the site. Type-4 soil and debris shall be analyzed in accordance with the procedures discussed below. o Unless otherwise approved by DENR, Type 4 soil will be sampled and analyzed as discussed on page 8. o If no CoCs exceed their respective IHSB Preliminary Health-Based Residential SRGs, then the soil shall be re-classified and may be used or disposed of as Type-1 soil. o If one or more CoCs exceed their respective IHSB Preliminary Health- Based Residential SRGs the soil can be reused on-site under an impervious surface in accordance with a plan approved by DENR or as otherwise directed by DENR. Any soil proposed for such reuse shall be sampled and analyzed by Toxic Characteristic Leaching Procedure (TCLP), and no soil that exceeds its respective TCLP analysis shall be reused at the Brownfields Property. o If one or more CoCs exceed their respective IHSB Preliminary Health- Based Residential SRGs or IHSB Protection of Groundwater SRGs, the soil may also be disposed of off-site at a disposal facility approved or permitted to accept such soil.  The discovery of Type-4 soil in areas other than those previously documented will require notification of the DENR contact listed in the Brownfields Agreement. Type-5 – Construction and/or organic debris (bricks, concrete, boulders, steel, wood).  No visual or olfactory evidence of impact: Proposed Camden Southline Development Soil Management Plan Brownfields Agreement 10036-06-60 October 19, 2012 7 o The material can be used on-site as local, state, and/or federal law permits. o If material can not be used on site then it can be transported to an approved off-site disposal facility without further testing. It should be noted that the disposal facility may require additional testing prior to accepting the material.  Evidence of impact (visual and/or odor): o The material shall be reclassified and treated as Type-4 construction and organic debris. Soil Stockpiling and Sampling Procedures The soil stockpiles will be constructed as follows, to mitigate potentially impacted soil being in contact with non-impacted surface soil:  Soil will be stockpiled on 10-mil plastic sheeting.  The stockpile will be bermed with straw bails and/or soil and the underliner will cover the berm material.  The stockpile and berm will then be covered with 10-mil thick plastic sheeting. The plastic cover will be secured. The top soil should be stripped and stockpiled separately from the underlying soil. Once the stockpiles are created, it will be necessary to sample the stockpiles in order to characterize the concentrations of the chemicals-of-concern in the material. The stockpiles will be sampled by Fund Southline, LLC’s environmental consultant. Sampling of Type-3 soil - The stockpiled soil sampling shall be conducted as outlined in the NCDENR UST Section “Guidelines for Assessment and Corrective Action for UST Releases” (July 2008 Change 2 October 1, 2012) and “Guidelines for Sampling” (July 2008 Change 2 May 1, 2012). A copy of the guidance is provided in Attachment D for reference. Unless otherwise approved by DENR soil stockpiles shall be sampled as follows:  The number of composite samples to be collected from each stockpile will depend upon the stockpile volume. The requirement for sampling soil stockpiles are as follows: o One composite soil sample will be collected, at a minimum per every 200 cubic yards. o Each composite soil sample will be comprised of soil samples collected from two randomly placed soil borings. Proposed Camden Southline Development Soil Management Plan Brownfields Agreement 10036-06-60 October 19, 2012 8 o Six (6) primary soil samples will be used to generate each composite sample. The six (6) primary samples will be collected as follows: Three boring locations per 200 cubic yard segment. Soil samples will be collected from 2 depths within each boring to obtain 6 samples per segment.  Soil from the Historic Contamination area at 2300 South Boulevard shall be analyzed for TPH GRO/DRO using EPA Method 8015, including 3550/5030 preparation methods (the “TPH Methods”). If levels exceed 10 ppm, than soil from the Historic Contamination area shall be analyzed using the methods in the bullet below.  Unless otherwise approved by DENR, soil samples from other petroleum- impacted areas shall be analyzed for VOCs by EPA Method 8260B and SVOCs by EPA Method 8270D. Soil samples shall also be analyzed for Chromium and Lead by EPA Method 3050B or 3051A if suspected to be impacted by a waste oil release. Sampling for Type-4 soil and Type-5 debris (with evidence of impact) - the stockpiled soil and debris sampling shall be conducted as outlined in the soil management plan and in the NCDENR IHSB “Guidelines for Assessment and Cleanup” (August 2011). A copy of the guidance is provided in Attachment D for reference. Unless otherwise approved by DENR, soil stockpiles shall be sampled as follows:  Soil stockpiles shall be sampled separately.  The number of composite samples to be collected from each stockpile will depend upon the stockpile volume. The requirement for sampling soil stockpiles are as follows: o Stockpiles should be divided into equal segments of approximately 100 cubic yards (c.y.) each. o Three (3) boring locations per segment (use random or biased selection). o Soil samples will be collected from two depths within each boring (minimum six (6) samples per segment). o Composite samples will be collected only within each segment. For samples submitted for volatile analysis, at least 25-percent will be collected as unmixed grab samples. o For areas of residual impact, PSI will use visible or field-screening evidence to collect additional biased samples.  Unless otherwise approved by DENR, soil samples shall be analyzed by a North Carolina certified laboratory for VOCs by EPA Method 8260B, Proposed Camden Southline Development Soil Management Plan Brownfields Agreement 10036-06-60 October 19, 2012 9 SVOCs by EPA Method 8270D, and Priority Pollutant Metals plus manganese by EPA Method 6010C and 7471B. All laboratory analyses outlined in this soil management plan shall be performed by a North Carolina certified laboratory. Laboratory results should be compared to the NCDENR IHSB Preliminary Health-Based SRGs and Protection of Groundwater SRGs (July 2012). The appropriate screening criteria are provided in Attachment E. Potential Soil Handling Health and Safety Concerns While specific health and safety requirements are necessary for the handling and long-term placement of soil that will be generated during construction activities on the subject property, the potential health effects for construction workers in handling the soil are considered to be very low. Residual petroleum impacts exist in several areas of the property. Fund Southline, LLC shall comply with all OSHA rules applicable to the site in performing activities in connection with this soil management plan. Post Construction Soil Sampling Following final grading activities, composite soil samples will be collected in the proposed green space areas of the site where residual soil is present at the surface. Each of these areas shall be known as a “Green Space Area.” Composite soil samples shall not be required at locations where fill has been placed over the surface of the presently existing grade. These samples will be collected prior to installation of building footings and the curb and gutter system. The upper 2 feet of soil in each Green Space Area will be considered a composite sample area. Each of the composite samples will be comprised of soil collected from three (3) to six (6) aliquots. The number of aliquots collected will be dependant on the size of each Green Space Area requiring sampling. Unless otherwise approved by DENR, each of the composite soil samples will be analyzed for VOCs by EPA Method 8260B, SVOCs by EPA Method 8270C and Priority Pollutant Metals plus manganese by EPA method 6010C and 7471B. In addition to analyzing the composite samples each of the aliquot samples will be submitted to the laboratory and placed on hold for potential future analysis. The aliquots will only be analyzed if the analysis of the composite soil samples indicates CoCs above IHSB Residential Soil Remediation Goals. A final report summarizing the post-construction sampling of the Green Space Areas shall be submitted to the DENR contact listed in the Brownfields Agreement. If soil in any of the Green Space Areas exceeds IHSB Preliminary Health-Based Residential SRGs, such impacted soil must be removed if located within 2-feet of the ground surface and replaced with clean fill. Clean fill shall be Proposed Camden Southline Development Soil Management Plan Brownfields Agreement 10036-06-60 October 19, 2012 10 established pursuant to the procedures discussed in the section entitled ”Fill Import” above. Any soil in a Green Space Area or removed from a Green Space Area which exceed IHSB Preliminary Health-Based Residential SRGs shall be managed in accordance with a plan pre-approved by DENR in writing. Landscape areas where soil 2 feet or less below ground surface will be disturbed After the Post-Construction Soil Sampling has taken place, the following procedures will apply to landscape areas where soil 2 feet or less below ground surface will be disturbed. Unless there is visual or olfactory evidence of impact to soil, there shall be no restrictions on disturbance of soil equal to or less than 2- feet below the existing ground surface (the “Top Soil”). If there is visual or olfactory evidence of impact to Top Soil, such impacted soil shall be removed from the landscape area and classified and managed in accordance with the procedures of this SMP governing Potentially Impacted Soils. Landscape areas where soil greater than 2 feet below ground surface will be disturbed After the Post-Construction Soil Sampling has taken place, the following procedures will apply to landscape areas where soil greater than 2 feet below ground surface will be disturbed. Top Soil will be removed and placed to the side of the excavation. The soil greater than 2-feet below existing ground surface (the “Deep Soil”) will be removed and stockpiled on plastic, and when possible will be returned to the bottom of the excavation. If the Deep Soil is returned to the bottom of the excavation, it is to be capped with 2-feet of the removed Top Soil or clean fill from a source approved by DENR. If all of the Deep Soil cannot be returned to the bottom of the excavation, the Deep Soil will be managed in accordance with the procedures in the SMP. FIGURES Approximate Site Location SITE LOCATION MAP Camden Southline One 2300 and 2316 South Boulevard Charlotte, NC PREPARED FOR: Camden Development, Inc PROJ. MGR: Bryan M. Lucas DATE: 06/25/2012 DRAWN BY: Bryan M. Lucas PROJ. #: 0457214 ATTACHMENT A Summary Tables of Soil Analytical Results Excerpt From (Phase II ESA for 2300 South Boulevard by ERM, December 2006) (Phase II ESA for 2316 South Boulevard by ERM, December 2006) TA B L E 2 SO I L S A M P L E A N A L Y T I C A L R E S U L T S FO R M E R W E L D E R S S U P P L Y F A C I L I T Y 23 0 0 S O U T H B O U L E V A R D CH A R L O T T E , M E C K L E N B U R G C O U N T Y , N O R T H C A R O L I N A Page 1 of 2 Sa m p l e I D Da t e De p t h (f e e t B G S ) Acetone cis-1-2-Dichloroethene Trichlorofluromethane All Other Compounds Barium Arsenic Cadmium ChromiumLeadSilver WS - S B - 3 1 0 / 1 7 / 0 6 6 - 8 < 1 16 ND -- - - - - - - - - - - - - - - - - - - -- WS - S B - 4 1 0 / 1 7 / 0 6 6 - 8 < 1 N D N D -- - - - - - - -- -- - - - - - - - - -- WS - S B - 6 1 0 / 1 7 / 0 6 8 - 1 0 2 . 0 - - - - 0 . 0 6 5 0 . 0 4 5 0 . 0 0 5 3 J N D - - -- - - - - - - - - -- WS - S B - 7 1 0 / 1 7 / 0 6 8 - 1 0 < 1 N D N D -- - - - - - - -- -- - - - - - - - - -- WS - S B - 9 1 0 / 1 7 / 0 6 2 - 4 < 1 0 - - - - 0 . 1 9 N D N D N D 1 1 0 2 . 1 0 . 4 0 J 36 26 0 . 1 2 J 0 . 0 3 WS - H A - 1 0 1 0 / 1 7 / 0 6 0 - 2 < 1 - - - - N D N D N D N D - - - - - - - - - - - - - - 10 1 0 2 . 8 0 . 3 5 3 1 N E 8 4 8 N E N E 2 7 2 7 0 N E N E 40 1 0 2 . 8 1 0 . 6 9 N E N E 8 4 8 N E N E 2 7 2 7 0 N E N E NE N E 1 4 , 1 2 7 4 2 . 9 3 8 6 N E 5 , 3 7 5 0 . 3 9 0 3 7 . 0 2 1 1 4 0 0 3 9 1 6 . 1 1 NE N E 5 4 , 3 2 1 1 4 6 2 , 0 0 0 N E 6 6 , 5 7 7 1 . 5 9 4 5 1 4 4 8 8 0 0 5 , 1 1 0 6 1 . 6 -- - - - - - - - - - - 0 . 5 2 4 . 8 N E 3 3 1 4 0 . 3 0 . 0 8 1 Na t u r a l l y O c c u r r i n g M e t a l s C o n c e n t r a t i o n 4 - R a n g e -- - - - - - - - - - - < 1 - 3 . 3 < 0 . 1 - 7 3 N E 1 - 1 , 0 0 0 < 1 0 - 3 0 0 < 0 . 1 - 3 . 9 0 . 0 1 - 3 . 4 Tr a c e E l e m e n t C o n t e n t o f N a t u r a l S o i l s 5 - A v e r a g e -- - - - - - - - - - - N E 5 0 . 0 6 1 0 0 1 0 0 . 3 0 . 0 3 Tr a c e E l e m e n t C o n t e n t o f N a t u r a l S o i l s 5 - R a n g e -- - - - - - - - - - - 2 - 1 0 1 - 5 0 0 . 0 1 - 0 . 7 1 - 1 , 0 0 0 2 - 2 0 0 < 0 . 1 - 2 0 . 0 1 - 0 . 3 On l y d e t e c t e d c o m p o u n d s a r e s h o w n i n t a b l e 1 - N C D E N R U S T S e c t i o n A c t i o n L e v e l mg / k g = M i l l i g r a m s p e r k i l o g r a m 2 - A q u i f e r P r o t e c t i o n S e c t i o n C l e a n U p L e v e l BG S = B e l o w g r o u n d s u r f a c e 3 - N C R i s k A n a l y s i s F r a m e w o r k ( d r a f t , 1 9 9 6 ) ND - N o t D e t e c t e d a t M e t h o d D e t e c t i o n L i m i t 4 - U S G S P r o f e s s i o n a l P a p e r 1 2 7 0 " E l e m e n t a l C o n c e n t r a t i o n s I n S o i l s a n d 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 NE = N o t e s t a b l i s h e d Un i t e d S t a t e s " , H . T . S h a c k l e t t e a n d J . G . B o e r n g e n , 1 9 8 4 . V a l u e s f o r E a s t e r n U n i t e d S t a t e s p r e s e n t e d J - E s t i m a t e d v a l u e b e t w e e n R e p o r t i n g L i m i t a n d M e t h o d D e t e c t i o n L i m i t 5 - B a c k g r o u n d c o n c e n t r a t i o n s o f m e t a l s p e r T a b l e 6 . 4 6 o f E P A S W - 8 7 4 , p a g e 2 7 3 . Re s u l t s s h o w n i n b o l d e x c e e d U S T s e c t i o n a c t i o n l e v e l s o r S o i l - G r o u n d w a t e r Cl e a n u p L e v e l , w h e r e a p p l i c a b l e -- = N o t A n a l y z e d Na t u r a l l y O c c u r r i n g M e t a l s C o n c e n t r a t i o n 4 - M e a n ME T A L S M e t h o d 6 0 1 0 B ( m g / k g ) So i l - G r o u n d w a t e r C l e a n u p L e v e l 2 VO L A T I L E O R G A N I C C O M P O U N D S b y E P A 8 2 6 0 B ( m g / k g ) Field Screening Volatile organic compounds - ppm (PID) Diesel Range Organics (DRO) TPH Method 8015B (mg/kg) Gasoline Range Organics (GRO) TPH Method 8015B (mg/kg) US T S e c t i o n A c t i o n L e v e l 1 MERCURY by EPA Method 7471 (mg/kg) EP A R e g i o n 9 P R G I n d u s t r i a l / C o m m e r c i a l 3 EP A R e g i o n 9 P R G R e s i d e n t i a l 3 TA B L E 2 ( C o n t i n u e d ) SO I L S A M P L E A N A L Y T I C A L R E S U L T S FO R M E R W E L D E R S S U P P L Y F A C I L I T Y 23 0 0 S O U T H B O U L E V A R D CH A R L O T T E , M E C K L E N B U R G C O U N T Y , N O R T H C A R O L I N A Page 2 of 2 Sa m p l e I D D a t e De p t h (f e e t B G S ) 2-Methylnaphthalene Acenaphthene Anthracene Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,l)perylene Benzo(k)fluoranthene Chrysene Dibenzo(a,h)anthracene Fluoranthene Fluorene Indeno(1,2,3,-od)pyreneNaphthalenePhenanthrenePyreneAll Other Compounds WS - S B - 3 1 0 / 1 7 / 0 6 6 - 8 < 1 -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - WS - S B - 4 1 0 / 1 7 / 0 6 6 - 8 < 1 -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - WS - S B - 6 1 0 / 1 7 / 0 6 8 - 1 0 2 . 0 N D N D N D N D N D N D N D N D N D N D N D N D N D N D N D N D N D WS - S B - 7 1 0 / 1 7 / 0 6 8 - 1 0 < 1 -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - WS - S B - 9 1 0 / 1 7 / 0 6 2 - 4 < 1 0 -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - WS - H A - 1 0 1 0 / 1 7 / 0 6 0 - 2 < 1 0 . 1 3 J 0 . 7 2 1 . 1 2. 1 1 . 9 2 . 1 0. 7 8 1 . 4 2 . 3 0. 3 1 J 3. 9 0 . 5 1 1 0 . 4 9 3 . 7 3 N D 1. 7 8 . 2 1 0 0 0 0 . 3 4 0 . 0 9 1 1 . 2 6 , 7 0 0 1 2 3 8 0 . 1 7 2 8 0 4 4 3 . 3 0 . 5 8 6 0 2 9 0 N E 3 8 9 9 5 0 . 3 4 0 . 0 9 1 1 6 , 7 2 0 1 2 3 8 0 . 1 7 2 7 6 4 4 3 0 . 5 8 6 0 2 8 6 N E NE 3 , 6 8 2 2 1 , 8 9 6 0 . 6 2 1 0 . 0 6 2 0 . 6 2 1 N E 6 . 2 1 6 2 . 1 0 . 0 6 2 2 , 2 9 4 2 , 7 4 7 0 . 6 2 1 5 5 . 9 N E 2 , 3 1 6 N E NE 2 9 , 2 1 9 1 0 0 , 0 0 0 2 . 1 1 0 . 2 1 1 2 . 1 1 N E 2 1 . 1 2 1 1 0 . 2 1 1 2 2 , 0 0 0 2 6 , 2 8 1 2 . 1 1 1 8 8 N E 2 9 , 1 2 6 N E mg / k g = M i l l i g r a m s p e r k i l o g r a m J - E s t i m a t e d v a l u e b e t w e e n R e p o r t i n g L i m i t a n d M e t h o d D e t e c t i o n L i m i t BG S = B e l o w g r o u n d s u r f a c e 1 - N C D E N R U S T S e c t i o n A c t i o n L e v e l ND - N o t D e t e c t e d a t M e t h o d D e t e c t i o n L i m i t 2 - A q u i f e r P r o t e c t i o n S e c t i o n C l e a n U p L e v e l NE = N o t e s t a b l i s h e d 3 - E P A R e g i o n 9 P r e l i m i n a r y R e m e d i a t i o n G o a l 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 R e s u l t s s h o w n i n b o l d e x c e e d R G l e v e l s o r S o i l - G r o u n d w a t e r C l e a n u p L e v e l , w h e r e a p p l i c a b l e - - = N o t A n a l y z e d PO L Y C Y C L I C A R O M A T I C H Y D R O C A R B O N S Me t h o d 8 2 7 0 ( m g / k g ) Field Screening Volatile organic compounds - ppm (PID) EP A R e g i o n 9 P R G I n d u s t r i a l / C o m m e r c i a l 3 So i l - G r o u n d w a t e r C l e a n u p L e v e l 2 EP A R e g i o n 9 P R G R e s i d e n t i a l 3 US T S e c t i o n A c t i o n L e v e l 1 TA B L E 3 SU M M A R Y O F G R O U N D W A T E R S A M P L I N G R E S U L T S FO R M E R W E L D E R S S U P P L Y F A C I L I T Y 23 0 0 S O U T H B O U L E V A R D CH A R L O T T E , M E C K L E N B U R G C O U N T Y , N O R T H C A R O L I N A Sa m p l e ID D a t e WS - G W - 1 1 0 / 1 9 / 0 6 2 9 N D N D N D N D - - - - - - - - - - WS - G W - 2 1 0 / 1 9 / 0 6 N D N D N D N D N D - - - - - - - - - - WS - G W - 4 1 0 / 1 9 / 0 6 N D N D N D N D N D N D - - - - - - - - WS - G W - 5 1 0 / 2 3 / 0 6 N D N D N D N D N D N D - - - - - - - - WS - G W - 6 1 0 / 2 3 / 0 6 N D 3 1 3. 9 0. 7 6 J N D N D - - - - - - - - WS - G W - 8 1 0 / 2 3 / 0 6 N D 3 . 5 3. 0 ND N D N D - - - - - - - - WS - G W - 9 1 0 / 2 3 / 0 6 N D N D N D N D N D - - 4 6 2 N D N D NC G r o u n d w a t e r 2 L S t a n d a r d 7 0 7 0 2 . 8 2 , 1 0 0 N E N E 2 , 0 0 0 1 5 N E 1 . 0 5 On l y d e t e c t e d c o m p o u n d s a r e s h o w n i n t a b l e µg / L = M i c r o g r a m s p e r l i t e r BG S = B e l o w g r o u n d s u r f a c e ND - N o t D e t e c t e d a t M e t h o d D e t e c t i o n L i m i t NE = N o t e s t a b l i s h e d - - = N o t A n a l y z e d J - E s t i m a t e d v a l u e b e t w e e n R e p o r t i n g L i m i t a n d M e t h o d D e t e c t i o n L i m i t *R e s u l t s s h o w n i n b o l d e x c e e d N o r t h C a r o l i n a G r o u n d w a t e r S t a n d a r d ( 2 L ) POLYCYCLIC AROMATIC HYDROCARBONS Method 8270 (µg/L) Trichlorofluromethane All Other Compounds VO L A T I L E O R G A N I C C O M P O U N D S b y E P A 8 2 6 0 B ( µ g / L ) Chloroform cis-1-2-Dichloroethene Trichloroethene MERCURY by EPA Method 7471 (µg/L) Barium Lead All Other Compounds ME T A L S Me t h o d 6 0 1 0 B ( µ g / L ) TABLE 2 SOIL SAMPLE ANALYTICAL RESULTS GEORGIA-CAROLINA PRODUCTS COMPANY, INC 2316 SOUTH BOULEVARD CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA Sample ID Date Depth (feet BGS) A c e t o n e A l l O t h e r C o m p o u n d s RJ-SB-1 10/23/06 8-10 <1 ----ND ND RJ-SB-2 10/19/06 2-4 <1 ND ND -- -- RJ-SB-3 10/19/06 2-4 <1 0.056 ND -- -- 2,800 NE NE NE NE NE 10 10 2.81 NE 40 10 14,127 NE NE NE 54,321 NE NE NE Only detected compounds are shown in table mg/kg = Milligrams per kilogram BGS = Below ground surface ND - Not Detected at Method Detection Limit NE = Not established -- = Not Analyzed TPH = Total Petroleum Hydrocarbons J - Estimated value between Reporting Limit and Method Detection Limit 1 - NCDENR - Inactive Hazardous Sites Program Remediation Goal 2 - NCDENR UST Section Action Level 3 - NCDENR Aquifer Protection Section Clean Up Level 4 - EPA Region 9 Preliminary Remediation Goal *Results shown in bold exceed RG levels or Soil-Groundwater Cleanup Level, where applicable Soil - Groundwater Cleanup Level 3 EPA Region 9 PRG Residential 4 EPA Region 9 PRG Industrial / Commercial 4 UST Section Action Level 2 G a s o l i n e R a n g e O r g a n i c s ( G R O ) T P H M e t h o d 8 0 1 5 B ( m g / k g ) IHSP RG 1 VOLATILE ORGANIC COMPOUNDS Method 8260 (mg/kg) F i e l d S c r e e n i n g V o l a t i l e o r g a n i c c o m p o u n d s - p p m ( P I D ) D i e s e l R a n g e O r g a n i c s ( D R O ) T P H M e t h o d 8 0 1 5 B ( m g / k g ) TABLE 3 GROUNDWATER SAMPLE ANALYTICAL RESULTS GEORGIA-CAROLINA PRODUCTS COMPANY, INC 2316 SOUTH BOULEVARD CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA Sample ID Date RJ-GW-1 10/23/06 ND ND ND ND RJ-GW-2 10/23/06 10 ND ND ND RJ-GW-3 10/23/06 ND ND ND ND 2316 WELL * 10/18/06 ND 2.7 ND ND NC 2L Groundwater Standards (µg/L)70 0.7 NE NE Only detected compounds are shown in table µg/L = Micrograms per liter BGS = Below ground surface ND - Not Detected at Method Detection Limit NE = Not established -- = Not Analyzed J - Estimated value between Reporting Limit and Method Detection Limit Results shown in bold exceed North Carolina Groundwater Standard (2L) * - Existing monitor well P o l y n u c l e a r A r o m a t i c H y d r o c a r b o n s ( P A H ) M e t h o d 8 2 7 0 ( µ g / L ) VOLATILE ORGANIC COMPOUNDS by EPA 8260B (ug/L) C h l o r o f o r m A l l O t h e r C o m p o u n d s T e t r a c h l o r o e t h e n e ATTACHMENT B Geophysical Survey and Ground Penetrating Radar Survey Report Geophysical Survey Cherokee Southline LLC Camden Southline 1 Inverness Road and South Boulevard Charlotte, North Carolina Prepared For: Professional Services Industries, Inc. 5021 West W.T. Harris Blvd. Charlotte, North Carolina 69 Prepared By: July 2012 FES Project No. 12159 PSI - Camden Southline 1 - Inverness Road and South Boulevard - Charlotte, NC Geophysical 12159/July 2012 Forrest Environmental Services, Inc.i Table of Contents Section Page 1.0 Introduction ...................................................1 2.0 Equipment and Procedures .......................................2 3.0 Survey Results and Conclusions ....................................5 List of Figures Figure 1 Geophysical Site Map..........................................7 2 EM - Apparent Conductivity Contour Map . . . . . . . . . . . . . . . . . . . . . . . . . .8 3 EM - Average Magnetic Susceptibility Contour Map . . . . . . . . . . . . . . . . . .9 4 GPR Line 1 ................................................10 5 GPR Line 2 ................................................11 6 Geophysical Anomaly Map.....................................12 PSI - Camden Southline 1 - Inverness Road and South Boulevard - Charlotte, NC Geophysical 12159/July 2012 Forrest Environmental Services, Inc.1 1.0 Introduction Forrest Environmental Services, Inc. (FES) performed a geophysical survey at the Camden Southline 2 site located west of the intersection of Inverness Road and South Boulevard in Charlotte, North Carolina on the 10 and 11 July 2012. The investigation consisted of an th th electromagnetic (EM) and ground penetrating radar (GPR) surveys to locate suspected underground storage tanks (USTs). The EM survey was conducted throughout the property that included the parking lot. Data was collected along linear 10-foot traverses having stations at 10 readings per second using an Archer data logger connected to a GPS within a sub-meter accuracy that covered approximately 4 acres. The northings and eastings values were in UTM feet coordinates. The survey boundaries were selected by a PSI representative. Topographically, the site slopes to the south. The site consists of asphalt parking lots and driveways and concrete pads. Survey locations and physical features are shown in Figure 1. Details of the geophysical survey are described in the following sections. PSI - Camden Southline 1 - Inverness Road and South Boulevard - Charlotte, NC Geophysical 12159/July 2012 Forrest Environmental Services, Inc.2 2.0 Equipment and Procedures EM The EM survey was performed using an EM-31 induction meter to measure the apparent conductivity of the subsurface. The EM-31 consists of two horizontal coplanar loops, one acting as a transmitter and the other as a receiver. The transmitter induces electrical eddy currents in the earth, which in turn produce a secondary magnetic field. The receiver intercepts the secondary field, and the meter measures the terrain conductivity by comparing the strength of the secondary field to that of the primary field. The depth of investigation by EM is a function of the intercoil spacing and the orientation of the antenna dipoles. The EM-31 has an intercoil spacing of 12 feet, and used in the vertical dipole mode, has an effective penetration depth of approximately 18 feet. Two readings were obtained from the EM-31 at each measurement station. The EM was connected to a data logger that simultaneously recorded both the quadrature-phase component and the in-phase component. The quadrature-phase component measures the apparent terrain conductivity of the subsurface, and will detect metallic and nonmetallic objects or features with conductivities that deviate from their surroundings. The background apparent terrain conductivity value at the site was approximately 20 millimhos per meter (mmhos/m). The in-phase component measurements are proportional to an effective, average magnetic susceptibility of the surrounding earth; this mode is sensitive to large metallic objects. The readings do not indicate true magnetic susceptibility because there is an unknown additive constant and multiplying factor that would be required to convert the measured values to magnetic susceptibility. Generally, negative EM values can indicate the areal extent of large, shallow buried metal objects. The EM displays moderate-sized metal objects that are buried deep as areas of high conductivity; therefore, both high and negative readings of apparent conductivity can indicate metal. However, high conductivity materials can also be caused by conductive chemical PSI - Camden Southline 1 - Inverness Road and South Boulevard - Charlotte, NC Geophysical 12159/July 2012 Forrest Environmental Services, Inc.3 compounds such as acids, sulfates, fly ash, and salts in the subsurface and by conductive soils such as clay. Low conductivity materials such as wood and oil are generally not detectable by the EM. Contours of the EM data were generated by computer using Golden Software's SURFER®. Data gridding was performed using 1-foot spacing, and the Kriging algorithm was used for grid interpolation. The contour maps of the data results are discussed in the following section. Ground Penetrating Radar Survey The GPR survey was performed using a Noggin Smart Cart with a shielded 250 megahertz (MHz) antenna. GPR is an EM method that detects interfaces between subsurface materials with contrasting dielectric constants. The GPR system consists of an antenna that consists of a transmitter and receiver that were connected to a computer that processes the received signal and locates the position of data collection. The transmitter radiates repetitive short-duration EM waves into the earth from the antenna as it is moved across the ground surface. These radar waves are reflected back to the receiver by interfaces between materials with different dielectric constants. The intensity of the reflected signal is a function of the dielectric constant contrast at the interface, the conductivity of the material the wave is traveling through, and the frequency of the signal. Subsurface features that cause reflections are: 1) natural geologic conditions such as changes in sediment composition, bedding and cementation horizons, voids, and water content and 2) fill materials or changes in the subsurface such as soil backfill, buried debris, USTs, pipelines, and utilities. The controlling unit receives the signal from the antenna and produces a continuous cross- section of the subsurface interface reflections. Depth of GPR signals is highly site-specific and is limited by signal attenuation or absorption of the subsurface. Signal attenuation is dependent on the electrical conductivity of subsurface materials. Signal attenuation is greatest in materials with high conductivity, such as clays or brackish groundwater, and lowest in low conductivity material, such as unsaturated sands or rock. GPR depth penetration is dependent on antenna frequency. Depth penetration increases PSI - Camden Southline 1 - Inverness Road and South Boulevard - Charlotte, NC Geophysical 12159/July 2012 Forrest Environmental Services, Inc.4 with decreasing frequency; however, identification diminishes proportionally with smaller features. The depth penetration of this GPR survey was approximately 2.5 meters (8 feet) below surface. The GPR survey used a 250 MHz antenna that was internally shielded from above ground and adjacent anthropogenic sources. The GPR survey was performed by a project geophysicist pulling the antenna adjacent to the vents. The location of the antenna along the transects lines were marked electronically from a survey wheel. Recorded data were collected at 0.1-foot intervals and stored on the laptop computer. The GPR data were converted into a GPR depth model using Sensor’s and Software pulse EKKO software. The GPR data was gained, migrated, and a low frequency response filter was included to the raw data. PSI - Camden Southline 1 - Inverness Road and South Boulevard - Charlotte, NC Geophysical 12159/July 2012 Forrest Environmental Services, Inc.5 3.0 Survey Results and Conclusions The objective of the geophysical survey was to determine the presence of suspected USTs and other buried metal and non-metal objects. The EM survey indicated 12 anomalies that are from surface anthropogenic interferences. The 12 anomalies are from investigation derived waste containers (IDW) located adjacent to the boring locations. The EM apparent terrain conductivity contour map (Figure 2) exhibited six anomalies that are not from surface anthropogenic interferences such as reinforced concrete and fences. The EM average magnetic susceptibility contour map (Figure 3) confirms the presence of the anomalies of Figure 2. One negative anomaly is centered at 1681320 feet East 12781640 feet North (Anomaly 1). GPR Line 1 was conducted at Anomaly 1. GPR Line 1 indicates one anomaly centered at approximately 12 feet North about 1.5 feet below ground surface (Figure 4). Anomaly G appears to be a large mass of buried metal such as a UST. Four negative anomalies are centered at 1681210 feet East 12781700 feet North, 1681380 East 12781700, 1681450 East 12781740 North and 1681225 feet East 12781750 feet North. The Anomalies 2 through 5 appear to be buried reinforced concrete pads. One negative anomaly is centered at 1681280 feet East 12781840 feet North (Anomaly 6). GPR Line 2 was conducted at Anomaly 6. GPR Line 2 indicates one anomaly centered at approximately 14.5 feet North about 2.5 feet below ground surface (Figure 5). Anomaly 6 appears to be a large mass of buried metal such as a UST. One linear anomaly is centered at 1681370 feet East 12781800 feet North. Anomaly 7 appears to be an underground utility. The geophysical survey indicated four anomalies (Anomalies 2 through 5) that appear to be buried reinforced concrete at the central section of the survey (Figure 6). The geophysical PSI - Camden Southline 1 - Inverness Road and South Boulevard - Charlotte, NC Geophysical 12159/July 2012 Forrest Environmental Services, Inc.6 survey indicated one linear anomaly (Anomaly 7) that appears to be an underground utility at the northern section of the survey (Figure 6). The geophysical survey indicated two anomalies (1 and 6) that appear to be a large mass of buried metal such as USTs. One anomaly is located at the central section of the survey, and one anomaly is located at the northern section of the survey (Figure 6). Anomalies 1 and 6 were painted in the field by orange paint. Anomaly 1 was also marked in the field by orange pin flags. ATTACHMENT C Design Drawings (selected drawings only) ATTACHMENT D NCDENR - IHSB Guidelines for Assessment and Cleanup (August 2011) Inactive Hazardous Sites Program Guidelines for Assessment and Cleanup August 2011 Department of Environment and Natural Resources Division of Waste Management Superfund Section Inactive Hazardous Sites Branch 401 Oberlin Road - Suite 150 (Note: our physical address in October 2011 will be 217 West Jones Street) 1646 Mail Service Center Raleigh, North Carolina 27699-1646 Telephone: (919) 508-8400 http://portal.ncdenr.org/web/wm/sf/ihshome i Purpose and Intended Use of the Guidelines These guidelines outline the minimum technical and administrative procedures for all site assessments and site cleanups conducted pursuant to the Inactive Hazardous Sites Response Act of 1987 (N.C.G.S. 130A-310 et.seq.). The guidelines do not apply to cleanups conducted under the Inactive Hazardous Sites Branch’s Registered Environmental Consultant (REC) Program. For additional information on the REC Program, please refer to the most recent edition of the REC Program Implementation Guidance. These guidelines should be used by remediating parties at priority action sites when responding to Site Assessment Request Letters, Site Assessment Orders, Site Cleanup Request Letters, Remedial Action Orders and Administrative Agreements for voluntary remedial actions not conducted under the REC program. Due to the wide range of conditions encountered at hazardous substance disposal sites, the guidelines will not address every conceivable situation. At most sites, the consultant will need to prescribe additional sample collection and analyses based on site-specific conditions. The importance of retaining a qualified and experienced environmental consultant cannot be overemphasized. Note: In order to be acknowledged and receive Inactive Hazardous Sites Branch approval, all voluntary site cleanups, whether managed under the REC Program or managed directly by the Inactive Hazardous Sites Branch, must be conducted pursuant to an Administrative Agreement with the Division of Waste Management. ii Submittal of Documents All work plans and reports should be submitted in both paper and electronic formats unless otherwise instructed by branch staff. Specifications for electronic document submittal can be found at: http://portal.ncdenr.org/web/wm/sf/ihshome. iii Table of Contents SECTION PAGE 1.0 Introduction 1 2.0 Remedial Investigation Work Plans 4 3.0 Remedial Investigation Reports 9 4.0 Remediation Goals 11 5.0 Remedial Action 17 Appendix A: Sampling and Analytical Procedures for the Remedial Investigation A.1 Introduction A.2 Soil Sample Collection A.3 Groundwater Sample Collection A.4 Surface Water and Sediment Sample Collection A.5 Other Sample Collection A.6 Standard Field Protocols A.7 Sample Analyses A.8 Data Reporting Appendix B: Procedures for Confirmation Sampling and Analysis B.1 Introduction B.2 Soil Sampling B.3 Groundwater Sampling B.4 Surface Water/Sediment Sampling B.5 Sample Analyses Appendix C: Sensitive Environment Contacts Appendix D: Land Use Restrictions D.1 Approval Process for Use of Land Use Restrictions as a Remedy D.2 Land Use Restrictions Consent Form D.3 Cancellation of Land Use Restrictions Appendix E: Procedures for Demonstrating Attainment of Health-Based Soil Remedial Goals Through Averaging Contaminant Concentrations 1 1.0 Introduction 1.1 Statutory Authority The Inactive Hazardous Sites Program was created by the Inactive Hazardous Sites Response Act of 1987 (N.C.G.S. 130A-310 et. seq.). Authority for implementing the statute has been delegated to the Director of the Division of Waste Management (division). The Inactive Hazardous Sites Program is a state program that derives its authority from the state statute referenced above. Compliance with these guidelines does not ensure compliance with the National Contingency Plan or CERCLA/SARA. 1.2 Jurisdiction The program addresses releases to the environment of hazardous substances, as defined in CERCLA/SARA. The program addresses both pre-1980 and post-1980 disposal/releases. Except as noted below, the program's jurisdiction is not limited by facility type or operating status. The program does not address RCRA permitted or interim status facilities, or any sites where the Environmental Management Commission, the Commissioner of Agriculture, or the Pesticide Board have assumed jurisdiction. N.C.G.S. 130A-310.9 provides site owners, operators, or responsible parties an opportunity to voluntarily clean up inactive hazardous substance or waste disposal sites with the approval of the division. This voluntary remedial action program is administered by the division's Inactive Hazardous Sites Branch (branch). 1.3 Categories of Site Cleanups 1.3.1 Voluntary remedial actions Amendments to the Inactive Hazardous Sites Response Act in 1994 and 1995 provided the division with the authority to approve qualified environmental consultants to certify that remedial actions are in compliance with state law. At eligible voluntary remedial action sites, the remediating party may now retain an approved environmental consultant to both perform and certify a remedial action in lieu of state oversight. These changes were instituted because of the limited state staff resources available to oversee voluntary remedial actions. The division continues to have complete discretion to directly oversee any voluntary remedial action, however, due to resource limitations, all eligible sites will be directed into the privatized oversight program known as the Registered Environmental Consultant (REC) Program. Remediating parties wishing to conduct a voluntary remedial action must first notify the branch, in writing, of their desire to conduct a voluntary remedial action. Upon receipt of such notice, the branch will request that the remediating party complete a Site Cleanup Questionnaire with the aid of their environmental consultant. The questionnaire will be used to expedite the site eligibility screening process. Sites having any of the conditions listed on the questionnaire are not automatically ineligible for the REC Program, but will be 2 reviewed in more depth prior to assigning the site to either the REC or state- supervised voluntary remedial action programs. The Site Cleanup Questionnaire can be found at: http://portal.ncdenr.org/web/wm/sf/sfavailabledocs. 1.3.1.1 Remedial actions under REC program The remediating party is required to hire a division approved REC to perform and certify all remedial activities at the site. Prior to initiating any site work, the remediating party is also required to sign a limited Administrative Agreement (Agreement) that outlines the requirements for the remedial action. Upon remedial action completion and final certification by the REC, the site will be assigned “No Further Action” status in the Inactive Hazardous Sites inventory. This change of inventory status does not preclude any future state action if new evidence of contamination is discovered at a later date. Note: Site cleanups under the REC Program do not receive state oversight. The branch will, however, perform random and targeted audits of sites in the REC Program. For additional information, please refer to most recent edition of the REC Program Rules and Implementation Guidance. 1.3.1.2 Remedial actions under branch oversight The branch will oversee voluntary site cleanups, at sites not eligible for the REC Program, pursuant to Administrative Agreements with the remediating party. Under this category of voluntary remedial actions, the branch provides review and concurrence for project work, including remedial investigation work plans, remedial investigation reports, remedial action plans and remedial action reports. The remediating party does not have to hire a Registered Environmental Consultant to perform this work. 1.3.2 Priority actions When the branch determines a site is a priority for action, it will solicit the cooperation of the responsible party to perform assessment or cleanup activities by issuing a Remedial Investigation Request Letter or Site Cleanup Request Letter. The branch will review documents and oversee work related to compliance with Remedial Investigation Requests without an Agreement. However, to comply with Site Cleanup Requests, responsible parties must sign an Agreement before they begin any site work. Based on site conditions, the branch will determine if the remedial action will be supervised by the state or an REC. If the responsible party does not comply with the solicitation letters, the branch may issue an Order compelling action. 3 1.4 No Further Action Letters After satisfactorily completing a voluntary remedial action (either REC or state oversight), the remediating party will receive a letter indicating that the work required under the Agreement has been completed and the Agreement is terminated. The site will then be assigned "No Further Action" status in the Inactive Hazardous Sites inventory. This change of inventory status does not preclude any future state action if new evidence of contamination is discovered at a later date. In accordance with N.C.G.S. 130A-310.7(c), any party wishing to receive a "No Further Action" letter must provide the request in writing. The party requesting the letter may also be required to reimburse the state for expenses incurred while reviewing the no further action request. This requirement applies to all voluntary remedial action sites under the Inactive Hazardous Sites program. Additional information can be found at: http://portal.ncdenr.org/web/wm/sf/ihs/ra/nfa. 1.5 General Provisions 1.5.1 These guidelines outline the remedial action technical procedures and are not a substitute for the Inactive Hazardous Sites Response Act, N.C.G.S. 130A-310 et seq., and any relevant program rules. 1.5.2 This document and the remediation goal tables will be updated as necessary on the Superfund Section’s Web site. Updates can be found at: http://portal.ncdenr.org/web/wm/sf/sfavailabledocs. 1.5.3 The branch’s State Directed Cleanup Program is divided into Eastern and Western regions. A regional map and contact information for all branch programs and staff and can be found at: http://portal.ncdenr.org/web/wm/sf/ihs/ihsregmap. 1.5.4 N.C.G.S. 130A-310.9(a) requires that in order to participate in the voluntary cleanup program, the remediating party must pay a fee of $1,000.00. This fee will be used to help defray the costs of monitoring and enforcing the remedial action program. This fee must be paid to the Division of Waste Management before an Administrative Agreement will be executed. 4 2.0 Remedial Investigation Work Plans The remediating party must submit Remedial Investigation Work Plans to the branch pursuant to the terms of the Agreement, the Remedial Investigation Request Letter or the Remedial Investigation Order. The remediating party should not implement the Remedial Investigation Work Plan before it is approved by the branch. 2.1 Introduction The Remedial Investigation should be conducted in at least two phases. The Phase I investigation should identify all releases of hazardous substances to the environment, characterize the chemical nature of such releases, and collect sufficient sampling data in order to compile a list of contaminants of concern. Subsequent phases of the investigation should delineate the lateral and vertical extent of contamination in each area of concern, to concentrations less than or equal to the remediation goals established pursuant to section 4.0 of this document. Separate work plans are required for each phase of the investigation. The field procedures outlined in the Remedial Investigation Work Plans, specifically those relating to sample collection techniques, sample containers, sample preservation, equipment decontamination and field measurement procedures, should comply with the most current version of the U. S. Environmental Protection Agency (U.S. EPA) Region IV Science And Ecosystem Support Division (SESD) Field Branches Quality System and Technical Procedures. This information is available from the USEPA Region IV SESD at: http://www.epa.gov/region4/sesd/fbqstp/. Appendix A of this document provides an outline of the minimum sampling and analytical procedures for the remedial investigation. 2.2 Phase I Remedial Investigation: Identification of Contaminants and Areas of Concern The Phase I Work Plan should contain the information described below and be presented in the order described here. Site Description 1. Site location information including site street address, longitude and latitude, and identification of owners and use of the site and all surrounding property. 2. A summary of all management practices employed at the site for hazardous wastes and any wastes that may have contained hazardous substances, including a list of types and amounts of waste generated, treatment and storage methods, and ultimate disposition of wastes. Also include a description of the facility's past and current RCRA status; the location and condition of any vessels currently or previously used to store any chemical products, hazardous substances or hazardous wastes; and a summary of the nature of all on-site contaminant releases, including one-time disposals or spills. 5 3. United States Geological Survey topographic maps sufficient to display topography within a one-mile radius of the site. 4. A site map including scale; north arrow; and locations of property boundaries, buildings, structures, all perennial and non-perennial surface water features, drainage ditches, dense vegetation, known and suspected spill or disposal areas, sumps, septic systems, storm water drains and piping, underground utilities, storage vessels, and existing on-site wells; 5.a. An evaluation of all properties that make up the site and all adjacent property for the existence of any of the environmentally sensitive areas listed below. Appendix C provides the telephone contacts that should be made in order to identify these areas. The information received through these contacts should be outlined in this section of the work plan. In most cases, none of these areas will be present. Knowledge of the presence of these sensitive environments is necessary to determine if any special sampling (such as aquatic toxicity testing) is required and whether site remediation may do more harm than good (for example, excavation and destruction of a wetland versus leaving in place residual contamination which will not significantly impact the wetland environment). State Parks Areas Important to Maintenance of Unique Natural Communities Sensitive Areas Identified Under the National Estuary Program Designated State Natural Areas State Seashore, Lakeshore and River Recreational Areas Rare Species (state and federal Threatened and Endangered) Sensitive Aquatic Habitat State Wild and Scenic Rivers National Seashore, Lakeshore and River Recreational Areas National Parks or Monuments Federal Designated Scenic or Wild Rivers Designated and Proposed Federal Wilderness and Natural Areas National Preserves and Forests Federal Land designated for the protection of Natural Ecosystems State-Designated Areas for Protection or Maintenance of Aquatic Life State Preserves and Forests Terrestrial Areas Utilized for Breeding by Large or Dense Aggregations of Animals National or State Wildlife Refuges Marine Sanctuaries National and State Historical Sites Areas Identified Under Coastal Protection Legislation Coastal Barriers or Units of a Coastal Barrier Resources System Spawning Areas Critical for the Maintenance of Fish/Shellfish Species within River, Lake or Coastal Tidal Waters Migratory Pathways and Feeding Areas Critical for Maintenance of Anadromous Fish Species within River Reaches or Areas in Lakes or Coastal Tidal Waters in which such Fish Spend Extended Periods of Time 6 State Lands Designated for Wildlife or Game Management Wetlands 5.b. An evaluation of the site and all adjacent property areas that likely serve as a natural area attractive to terrestrial ecological receptors. 5.c. An evaluation of the site for the existence of any areas of stressed vegetation or stressed wildlife. Site History 6. A chronological listing of all previous owners and each period of ownership since the property was originally developed from pristine land. 7. Operational history with aerial photographs and Sanborne Fire Insurance maps to support land-use history. 8. Site environmental permit history, including all federal, state, and local environmental permits, past and present, issued to the remediating party or within its custody or control. The remediating party shall provide copies of any such permits upon request. 9. A summary of all previous and ongoing environmental investigations and environmental regulatory involvement with the site. Include copies of all associated reports and laboratory data. Proposed Methods of Investigation 10. Proposed procedures to characterize site geologic and hydrogeologic conditions and to identify and delineate each contamination source as to each affected environmental medium. Include plans for special assessments, such as a geophysical survey. 11. Proposed methods, locations, depths of, and justification for all sample collection points for all media sampled, including monitoring well locations and anticipated screened intervals (should comply with Appendix A). 12. Proposed field and laboratory procedures for quality assurance/quality control (should comply with Appendix A). 13. Proposed analytical parameters and analytical methods for all samples (should comply with Appendix A). 14. A contact name, address and telephone number for the principal consultant and laboratory. Also, qualifications and certifications of all consultants, laboratories and contractors expected to perform work in relation to this work plan. Any laboratory retained must currently be certified to either analyze applicable certifiable parameters under Title 15A of the North Carolina Administrative Code, Subchapter 2H, Section .0800, or be a contract laboratory under the U.S. EPA Contract Laboratory Program. 7 15. A description of equipment and personnel decontamination procedures. Schedule 16. A proposed schedule for site activities and reporting. Other Information 17. Any other information required by the branch or considered relevant by the remediating party. Certification 18. A signed and notarized certification by a representative of the remediating party stating, “I certify that, to the best of my knowledge, after thorough investigation, the information contained in or accompanying this certification is true, accurate, and complete.” 19. A signed and notarized certification by the consultant responsible for the day to day remedial activities stating, “I certify that, to the best of my knowledge, after thorough investigation, the information contained in or accompanying this certification is true, accurate, and complete.” 20. Any work that would constitute the “practice of engineering” as defined by G.S. 89C shall be performed under the responsible charge of, and signed and sealed by, a professional engineer registered in the state of North Carolina. Any work that would constitute the “public practice of geology” as defined by G.S. 89E shall be performed under the responsible charge of, and signed and sealed by, a geologist licensed in the state of North Carolina. Note 1: Items 4, 6, 7 and 8 above may not be required for sites where the area of concern is limited to a small area of soil contamination only. Note 2: The remediating party is responsible for developing appropriate health and safety measures that conform to all applicable federal and state regulations. The goal is to ensure that the health and safety of all persons on and off-site will not be adversely affected by any remedial activity. 2.3 Phase II Remedial Investigation: Delineation of Extent of Contamination Upon completion of the Phase I remedial investigation, the branch will compile a list of contaminants of concern for the site. The remediating party should use the remediation goals referenced in section 4.0 of this document or site-specific natural background levels for metals, if less stringent, in order to delineate the extent of contamination. The branch will determine remediation goals for any contaminants not listed in the tables. 8 The Phase II (and any necessary subsequent phases) Remedial Investigation Work Plan should include items 10-20 above, presented in that order. Note: Any sites having volatile organic compounds will be required to assess structural vapor intrusion potential. For additional information, contact the branch. 9 3.0 Remedial Investigation Reports After each phase of the remedial investigation, the remediating party should prepare a Remedial Investigation Report that includes the minimum information listed below. These reports must be submitted to the branch pursuant to the terms of the Agreement, the Remedial Investigation Request Letter or the Remedial Investigation Order. Remedial investigation reports should be organized in sections corresponding to the following. At minimum, they should include the following elements. Methods of Investigation 1. A narrative description of how the investigation was conducted, including a discussion of any variances from the approved work plan. 2. A description of groundwater monitoring well design and installation procedures, including drilling methods used, completed drilling logs, "as built" drawings of all monitoring wells, well construction techniques and materials, geologic logs, and copies of all well installation permits. 3. A map, drawn to scale that shows all locations where soil, surface water and sediment were sampled. Also, include all monitoring well locations on the map. In all cases show each location’s relation to known disposal areas or other sources of contamination. Monitoring wells should be surveyed to a known benchmark. Soil sample locations should be surveyed to a known benchmark or flagged with a secure marker until after the remedial action is completed. A professional land surveyor must conduct all surveying. 4. A description of all laboratory quality control and quality assurance procedures followed during the remedial investigation. 5. A description of procedures used to manage drill cuttings, purge water and decontamination water. Site Geology and Hydrogeology 6. A summary of site geologic conditions, including a description of soils and vadose zone characteristics. 7. A description of site hydrogeologic conditions (if groundwater assessment is determined to be necessary), that includes current uses of groundwater, notable aquifer characteristics, a water table elevation contour map with groundwater flow patterns depicted, tabulated groundwater elevation data, and a description of procedures for measuring water levels. Investigation Results 8. Tabulation of analytical results for all sampling (include sampling dates and soil sampling depths) and copies of all laboratory reports (see data reporting procedures shown in section A.8). 10 9. Soil, groundwater, surface water and sediment contaminant delineation maps and cross sections. Include scale and sampling points with contaminant concentrations. 10. A description of procedures and the results of any special assessments, such as geophysical surveys, immunoassay testing (U.S. EPA SW-846 4000 series methods), soil gas surveys, or test pit excavations. Notes/Photographs 11. Copies of all field logs and notes, and color copies of site photographs. Other Information 12. If groundwater contamination exists at the Site, an inventory and map of all wells, springs, and surface water intakes used as sources of water within a one-half mile radius of the center of the site. If the site is greater than one hundred (100) acres in size, the inventory and map should cover a one-mile radius from the center of each source area. 13. Any other information required by the branch or considered relevant by the remediating party. Certification 14. A signed and notarized certification by a representative of the remediating party stating, “I certify that, to the best of my knowledge, after thorough investigation, the information contained in or accompanying this certification is true, accurate, and complete.” 15. A signed and notarized certification by the consultant responsible for the day to day remedial activities stating, “I certify that, to the best of my knowledge, after thorough investigation, the information contained in or accompanying this certification is true, accurate, and complete.” 16. Any work that would constitute the “practice of engineering” as defined by G.S. 89C shall be performed under the responsible charge of, and signed and sealed by, a professional engineer registered in the state of North Carolina. Any work that would constitute the “public practice of geology” as defined by G.S. 89E shall be performed under the responsible charge of, and signed and sealed by, a geologist licensed in the state of North Carolina. 11 4.0 Remediation Goals The branch’s policy for establishing remediation goals is consistent with the intent of CERCLA/SARA and the National Contingency Plan (NCP), as required by N.C.G.S. 130A- 310.3. The remediation goal tables referenced in this section are periodically updated based on new or revised toxicological data. Remediation goals for soil and vapor intrusion screening levels are typically updated twice per year (during the first and third quarters). Therefore, remediating parties and their environmental consultants should periodically check the remediation goal tables for updates to ensure that the most current information is being used. 4.1 Remediation Goals for Unrestricted Land Use This section describes the procedures used to establish remediation goals for unrestricted land use for each environmental media. Remediation goals for restricted land use are described in section 4.2. 4.1.1 Remediation goals for soils The branch has two soil remediation goals: a “health-based” remediation goal for total concentrations of contaminants (section 4.1.1.1), and a “protection of groundwater” remediation goal for leachable concentrations of contaminants (section 4.1.1.2). The remedial action must attain both soil remediation goals. Note: If sensitive environments are present at a site, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Decisions will be made based on site-specific conditions. When developing a Remedial Action Plan (RAP) as discussed in section 5.0, the remediating party shall attempt to design a remedial action alternative that will attain the goals described in sections 4.1.1.1 and 4.1.1.2. However, the branch may adjust remediation goals at the time of remedy selection if warranted. If the preferred remedy (selection governed by the feasibility study included in the RAP) cannot achieve the remediation goals provided, the branch will re-establish levels based on the lowest concentration that can be achieved at the site given that those levels correspond to less than the maximum cumulative excess cancer risk of 1 x 10-4 and a hazard index of 1. 4.1.1.1 Health-based soil remediation goals for unrestricted land use Preliminary health-based remediation goals are shown in the Inactive Hazardous Sites Branch Soil Remediation Goals Table (SRG Table) located at: http://portal.ncdenr.org/web/wm/sf/sfavailabledocs . These remediation goals have been established using current U.S. EPA risk assessment guidance and are based on a lifetime excess cancer risk of 1 x 10-6 (carcinogens) and a hazard quotient of 0.2 (non-carcinogens). The hazard quotient of 0.2 is used to account for multiple (average of five) non-carcinogens in the same critical effect group. These numbers can be used as final health-based remediation goals. The branch can adjust these remediation goals at sites with less than five non-carcinogens in the same critical effect group and for the specific 12 set of carcinogens present. Adjustments can also be made for restricted uses as described in Section 4.2. The branch must be contacted for contaminants not listed in SRG Table. Note 1: The soil remediation goal for PCBs was established in accordance with U.S. EPA policy for the cleanup of PCBs at Superfund sites. The unrestricted use remediation goal for PCBs is 1 ppm. This number may not be adjusted. However, higher levels can remain in subsurface soils if (1) restrictive covenants, which prevent exposure, are applied and (2) the remaining concentrations of PCBs in soil are shown not to pose a threat to groundwater (i.e. soils meet protection of groundwater remediation criteria). Application of restrictive covenants requires branch approval (see section 4.2). Note 2: Some of the remediation goals shown in the SRG Table may be more stringent than natural background concentrations or practical quantitation limits. Cleanup to below site-specific natural background concentrations (metals only) or practical quantitation limits (using the analytical methods specified in section A.7.1.2) is not required. Note 3: If the site is currently or likely to become agricultural (crops, livestock, etc.), remediation goals will also need to be calculated for this scenario due to the concern for possible uptake of contaminants by plants and livestock. Note 4: At sites with surface water contamination, remediating parties may need to plan the remedial action to address continuing source areas first. For example, surface water contamination may result from continuing releases from soils. In this case, soil must be remediated to levels that will ensure attainment of surface water remediation goals. Note 5: If soil contamination is causing or will cause a structural vapor intrusion risk, cleanup levels may be adjusted accordingly. Note 6: In certain situations, health-based soil remediation goals may be attained through averaging contaminant concentrations. See Appendix E for additional information. 4.1.1.2 Protection of groundwater soil remediation goals Procedure In addition to meeting health-based remediation goals, soils must also meet a protection of groundwater soil remediation goal. Soils that leach organic contaminants in excess of the groundwater remediation goals will require further remediation. Soils that leach metals in excess of the groundwater remediation goals (or natural leachable background concentrations, whichever are less stringent) will also require further remediation. The protection of groundwater soil remediation goals can be determined using one of the following methods. The environmental consultant should evaluate which method is most appropriate for each 13 site. (1) Use the protection of groundwater values listed on the Inactive Hazardous Sites Branch SRG Table located at: http://portal.ncdenr.org/web/wm/sf/sfavailabledocs. (2) Compare site specific leachability data to the groundwater remediation goals. Soils that leach contaminants at concentrations exceeding the groundwater remediation goals require additional remediation. The branch recommends the use of TCLP or SPLP analyses to determine the leachability of contaminants. If another laboratory model is used, the remediating party must demonstrate its scientific validity and that its precision and accuracy are commensurate with its stated use. (3) Use simple scientifically valid mathematical equations, employing site-specific field data for all parameters, to calculate protection of groundwater soil remediation goals. For example, companion samples can be collected from different areas of the site having the contaminant(s) in question and analyzed for: (i.) the total concentration of the contaminant(s), and (ii.) the TCLP concentration of the contaminant(s). The results could be used to determine a total concentration target level that will ensure the protection of groundwater criteria is met. Exceptions At sites that meet any of the following three conditions, the protection of groundwater soil remediation goals do not apply: 1. Residual soil contaminant concentrations (total concentrations in mg/kg) for metals only, do not exceed the site-specific natural background concentrations; 2. Residual soil contaminant concentrations (total concentrations in mg/kg) for both metals and organics, do not exceed values of twenty times the corresponding groundwater remediation goals (in mg/l); 3. Residual soil contaminant concentrations (total concentrations in mg/kg) for metals and organics do not exceed the health-based soil remediation goals for unrestricted land use (in mg/kg) described in section 4.1.1.1, and either (a) or (b) applies: (a) The remediating party has determined that all on-site disposal and releases of hazardous substances occurred over 15 years ago and sampling demonstrates that the concentrations of the constituents of concern and any daughter products in groundwater are below the groundwater remediation goals (see Section 4.1.2); 14 (b) The branch-approved RAP for the site includes active groundwater remediation and, based on site conditions and soil contaminant concentrations, the remediating party can demonstrate that: (1) soil contaminant concentrations will passively (or by actions of the groundwater remedy) reduce to meet the protection of groundwater remedial goals within five years of initiation of groundwater remediation; (2) soil contaminant concentrations will not cause an increase in groundwater contaminant concentrations; and (3) the material leaching will be captured or treated by the groundwater remedial system during that period. If active groundwater remediation is discontinued, the remediating party must demonstrate that contaminants will no longer leach from soil to groundwater at concentrations exceeding applicable remedial goals. Note: Monitored Natural Attenuation is not considered to be an active groundwater remedy. 4.1.2 Remediation goals for groundwater For groundwater contaminants with 15A NCAC 2L standards, remediation goals are the permanent and interim groundwater standards established under 15A NCAC 2L. For contaminants without 15A NCAC 2L standards, the remediating party should contact the Branch. Note 1: Remediation below the practical quantitation limits (using the analytical methods specified in section A.7.1.2) or site specific natural background levels (for metals only) is not required. Note 2: The permanent and interim groundwater standards are listed in the North Carolina Administrative Code (NCAC) at 15A NCAC 2L .0202 Groundwater Quality Standards. The NCAC can be found at: http://portal.ncdenr.org/web/wm/sf/sfavailabledocs. 4.1.3 Remediation goals for sediments Preliminary remediation goals for sediment are based on the most stringent of: 1. The health-based soil remediation goals listed in the SRG Table (or the upstream “background” concentrations, if less stringent); 2. Remediation goals sufficient to ensure that contaminated sediment will not cause exceedances of the remediation goals for groundwater and surface water; or 3. Remediation goals sufficient to ensure the protection of aquatic receptors. Maximum sediment contaminant concentrations will be compared to U.S. EPA Region IV Ecological Risk Sediment Screening Values (sediment 15 screening values). The sediment screening values can be found at: http://www.epa.gov/region4/waste/ots/ecolbul.html#ecointro. The branch will determine final remediation goals based on numbers of carcinogens and non-carcinogens present, ecological risks present, background concentrations, and levels that cause other media to exceed cleanup targets. Note 1: To demonstrate compliance with the branch’s preliminary sediment remediation goals for the protection of aquatic receptors, the laboratory must achieve sample quantitation limits less than or equal to the sediment screening values. If this is not possible, the laboratory must state in the case narrative that the quantitation limits are the lowest that can be achieved using U.S. EPA-approved methods. Note 2: If sediment screening values are exceeded, the remediating party must provide the following additional information: 1. A table with all sample analytical data. 2. A map drawn to scale with locations of all sampling points. 3. A table containing maximum contaminant concentrations, upstream contaminant concentrations, U.S. EPA sediment screening values (please identify sample numbers that have exceedances) and sample quantitation limits. 4. A statement that indicates whether the contaminated surface water body is perennial or intermittent. 5. A discussion of the potential mobility of contaminated sediment and the potential for contaminants to leach into surface water. 6. The names and classifications of all downstream surface water bodies if they are potential recipients of contaminated surface water or sediment. 7. The identity of adjacent or downstream wetlands that could be affected. 8. An estimate of the width and depth of the contaminated surface water body. Note 3: If contaminated sediments are located in a wetland or other sensitive environment, the branch will weigh the benefit of active remediation with the need for protecting and preserving sensitive environments and instead using passive remedies or institutional controls. Note 4: At sites with surface water contamination, remediating parties may need to plan the remedial action to address continuing source areas first. For example, surface water contamination may result from continuing releases from sediment. In this case, sediment must be remediated to whatever levels will ensure attainment of the surface water remediation goals. 16 4.1.4 Remediation goals for surface water Preliminary remediation goals for surface water are established by the Division of Water Quality (DWQ) using State or Federal surface water standards for the protection of human health and/or aquatic life. Final remediation goals will be set at the DWQ standards or upstream “background” concentrations, whichever are less stringent, with the exception of the following two conditions: (1) if surface water contamination is causing sediments to exceed cleanup criteria, remediation of surface water will be necessary to eliminate this effect; (2) if remediation of surface water is determined to cause unreasonable harm to a wetland (or other protected environment) alternate goals will be determined by the branch. 4.2 Remediation Goals for Restricted Land Use Under certain site conditions, it may not be appropriate or feasible to meet the soil or sediment remediation goals described in sections 4.1.1 and 4.1.3. The remediating party may propose (for branch review and approval) alternate health-based remediation goals for soil or sediment based on a restricted land-use exposure scenario. In any case, remediation goals for protection of groundwater (Section 4.1.1.2) must be met. For sediment (and sometimes soil), ecological concerns can also alter remediation goals higher or lower. The process and requirements for proposing restricted land use as a remedy are described in detail in Appendix D of this document. In June 2011 House Bill 45 was signed into law allowing risked based remediation at industrial sites that meet certain criteria. Please see NCGS 130A-310.65 - .77 for additional information. If a site qualifies for risked based remediation, contact the branch. 4.3 Structural Vapor Intrusion Potential Evaluation Any sites having volatile organic compounds will be required to assess structural vapor intrusion potential. For additional information, see the branch’s vapor intrusion guidance at: http://portal.ncdenr.org/web/wm/sf/sfavailabledocs. 4.4 Additional Provisions The branch considers “monitored natural attenuation” to be a potential remedial alternative for attaining the remediation goals. It is not a waiver of the remediation goals. If natural attenuation of any contaminated medium is proposed, the remediating party must demonstrate that it is supported by the results of the feasibility study and that it is the preferred remedy. All proposed remedies must include removal and/or treatment of source areas with contamination exceeding health-based and protection of groundwater remedial goals. Source areas include waste materials, free product, suspected non-aqueous phase liquids in porous media, etc. If a remediating party determines that cleanup to established final remedial goals is not technically practicable from an engineering perspective, they may submit such a demonstration to the branch for consideration. 17 5.0 Remedial Action Once the branch has approved the remedial investigation in writing, the remediating party must prepare a RAP that includes the minimum information listed below. The RAP must be submitted to the branch pursuant to the terms of the Agreement, the Site Cleanup Request Letter, or the Remedial Action Order. 5.1 Introduction Depending on site conditions and in order to avoid submitting a final RAP that will not be approvable, it may be advantageous for the remediating party to submit several drafts of the RAP (e.g. 30%, 90% and final). This would allow the remediating party to receive contingent approval on proposed alternative(s) prior to the development of final RAP. The submission of a draft RAP is not required but is encouraged at sites using new remedial technologies or where treatability studies and/or pilot tests are necessary. After the branch reviews the RAP and any required amendments have been made, the revised RAP will be made available for public comment. At this time, the Branch may request that the remediating party provide additional copies of the RAP for distribution to the local health director, register of deeds office, and each public library in the county where the site is located. The branch will mail notice of the development of the RAP to those parties who have requested such notice (N.C.G.S. 130A-310.9(b)). The RAP will be available for public comment in this manner for 30 days after such mailing. If the division director determines that there is significant public interest in a site, the branch may hold a public meeting or public hearing. The branch will evaluate and consider all public comments before approving the RAP. RAPs should not be implemented until written approval is received from the branch. The branch will approve or disapprove the RAP within a reasonable period of time of receipt, but in a period not less than 30 days (public comment period). Any modifications to the approved final RAP (including scheduling) must be submitted in writing to the branch for approval. 5.2 Remedial Action Plan The RAP should be organized in sections corresponding to the following. At minimum, it should include the following elements. 5.2.1 Objectives 1. A discussion of the results of the remedial investigation. The discussion should include the media contaminated, contaminants of concern, and the lateral and vertical extent of contamination. 2. A brief statement of objectives for the remedial action. 18 5.2.2 Evaluation of remedies 1. Technology screening: Identification and listing of potentially applicable technologies. 2. Feasibility Study: An evaluation of remedial alternatives using the following feasibility study criteria: a. Protection of human health and the environment, including the attainment of remediation goals. b. Compliance with applicable federal, state and local regulations. c. Long-term effectiveness and permanence. d. Reduction of toxicity, mobility and volume. e. Short-term effectiveness: effectiveness at minimizing the impact of the site remediation on the environment and the local community. f. Implementability: technical and logistical feasibility, including an estimate of time required for completion. g. Cost. h. Community acceptance. 5.2.3 Proposed remedy 1. A demonstration that the proposed remedy is supported by the results of the feasibility study. 2. A detailed description of the proposed remedy, including (where applicable): process flow diagrams of all major components of the treatment train; conceptual engineering design reports, plans and specifications; and a project schedule. 3. A description of all activities that are necessary to ensure that the proposed method(s) of remedial action is (are) implemented in compliance with applicable laws and regulations, and that the remediation goals established hereunder are met. These activities include, but are not limited to, well installation and abandonment, sampling, run-on/run-off control, discharge of treated waste streams, and management of remediation-derived wastes. 4. The results of any treatability studies and/or additional site characterization needed to support the proposed remedy. Any sampling conducted in this regard must have the same support documentation as required for remedial investigation sampling. The applicable reporting requirements listed in sections 3.0 and A.8 must be identified in the RAP. 5. A description of the criteria for remedial action completion, including procedures for post-remedial and confirmatory sampling. 6. Equipment and personnel decontamination procedures. 19 Note: To eliminate ongoing sources of groundwater contamination, the proposed remedy for soil contamination must demonstrate that that the protection of groundwater soil remedial goals will be met within five (5) years of Remedial Action Plan implementation or sooner. If this cannot be demonstrated, active groundwater remediation is required to control groundwater contamination caused by ongoing leaching of contaminants. Also, if, at any time during the first five years of implementation of an approved RAP it is discovered that site conditions, remedial technologies or other factors will prevent the remediating party from achieving the protection of groundwater soil remedial goals within the required time period the remediating party shall immediately notify the Branch and active groundwater remediation may also be required. Note: The remediating party is responsible for developing appropriate health and safety measures that conform to all applicable federal and state regulations to ensure that the health and safety all persons on and off-site will not be adversely affected by any remedial activity. 5.2.4 Planned progress reporting The remediating party should specify in the RAP the intended progress reporting. A description of procedures and a schedule for completing construction, operation and maintenance, system monitoring and performance evaluation, and progress reporting should also be provided in the RAP. The progress reports must comply with the terms of the Agreement and the approved RAP. In most cases, the following reports will be required: 5.2.4.1 Preconstruction report - The content and timetable for submitting this report must be specified in the RAP. (See section 5.3 for content requirements.) 5.2.4.2. Construction completion report - The content and timetable for submitting this report must be specified in the RAP. (See section 5.4 for content requirements.) 5.2.4.3. Periodic progress reports - The content and timetable for progress reporting must be specified in the RAP. (See section 5.5 for content requirements.) 5.2.5 Certification 5.2.5.1 A signed and notarized certification by a representative of the remediating party stating, “I certify that, to the best of my knowledge, after thorough investigation, the information contained in or accompanying this certification is true, accurate, and complete.” 20 5.2.5.2 A signed and notarized certification by the consultant responsible for the day to day remedial activities stating, “I certify that, to the best of my knowledge, after thorough investigation, the information contained in or accompanying this certification is true, accurate, and complete.” 5.2.5.3 Any work that would constitute the “practice of engineering” as defined by G.S. 89C shall be performed under the responsible charge of, and signed and sealed by, a professional engineer registered in the state of North Carolina. Any work that would constitute the “public practice of geology” as defined by G.S. 89E shall be performed under the responsible charge of, and signed and sealed by, a geologist licensed in the state of North Carolina. 5.3 Preconstruction Report After receiving written approval of the RAP from the branch and prior to construction, the remediating party must submit a preconstruction report. The report must be certified as described in section 5.2.5 and contain at least the following information. 1. The results of any additional site characterization or treatability studies performed since branch approval of the RAP. 2. A final engineering report, including a narrative description of process design, a summary of changes from the conceptual design approved in the RAP and final construction plans and specifications. 3. Copies of any required registrations, permits, and approvals. 4. A detailed Performance Monitoring and Evaluation Plan that has been developed to monitor the performance of the remedial action system as shown in the final design. 5. An updated project schedule that includes estimated submittal dates for the Construction Completion Report, Progress Reports, and the Remedial Action Completion Report. 5.4 Construction Completion Report Within ninety days of construction completion, the remediating party must submit a construction completion report that includes “as-built” plans and specifications, a summary of major variances from the final design plans, and a summary of any problems encountered during construction. The construction completion report must be certified as described in section 5.2.5. 5.5 Progress Reports Weekly progress reports will be required during remedial actions of less than three months duration. Quarterly progress reports will be required for remedial actions of greater than three months duration. The content of weekly and quarterly progress reports 21 will be specified in the approved RAP. In most cases, the following information will be required: 1. Operation and maintenance results: summaries of remedial action operating experience and maintenance requirements, and a discussion of major problems encountered. 2. Performance evaluation results: tabulated and graphical presentation of monitoring data, and comparison of remedial action performance to design goals. Example: Performance evaluation reports for a groundwater remediation system would include evaluation of impacts on contaminant levels, hydraulic gradients and recovery well capture zones, evaluation of the treatment train, contaminant removal efficiencies, total mass of contaminants removed, etc. All results must include the applicable information shown in section 3.0 and the data reporting procedures shown in section A.8. Copies of waste manifests are required for any RCRA hazardous wastes shipped off site. 3. All progress reports must be certified as described in section 5.2.5. 5.6 Remedial Action Completion Report Within ninety days of remedial action completion, the remediating party must submit a final report which demonstrates that the remedial action has been completed in accordance with the approved RAP and in compliance with the Agreement, Site Cleanup Request Letter, or Order to Develop and Implement a Remedial Action Program. The final report should include at least the following: 1. A final progress report that includes the information shown in section 5.5. 2. A summary of remedial action operating experience and effectiveness in meeting design goals, based on all performance monitoring data and progress reporting to date. 3. A discussion of criteria for remedial action completion, and a demonstration, supported by confirmation sampling data, that such criteria have been satisfied. All confirmation sampling results should include the same support documentation as required for remedial investigation sampling. The applicable reporting requirements listed in section 3.0 and section A.8 must be identified. 4. A summary of total project costs. 5. Certifications described in section 5.2.5. Note: To be considered complete, the remedial action must achieve the current remedial goals at the time of remedial action completion. A - 1 Appendix A: Sampling and Analytical Procedures for the Remedial Investigation A.1 Introduction This appendix provides general guidance on sampling and analytical procedures. At most sites, the remediating party will need to prescribe additional sampling and analysis based on site- specific conditions. The remedial investigation should include collection of the minimum number of samples described below, from each area of concern. (Analytical procedures are addressed in section A.7 of this appendix.) Once the first phase of sampling is completed, the branch will review the information provided and compile a list of contaminants of concern. The second phase of the remedial investigation should be structured to define the extent of each contaminant in each area of concern for each medium that is contaminated. The extent of contamination must be delineated to the remediation goals contained in section 4.0 of this document or site-specific natural background levels for metals, if less stringent. Note: All areas known, suspected or having a reasonable probability of being contaminated by hazardous substances must be investigated. “Areas known, suspected or having a reasonable probability of being contaminated” includes any media or areas where there is evidence (such as, but not limited to, allegations or indications of spills, visual observations, field instrument readings, laboratory data, and chemical odor) of a release of hazardous substances or of materials that contain or may contain hazardous substances. A.2 Soil Sample Collection A.2.1 Phase I sampling The purpose of the Phase I soil investigation is to identify all releases of hazardous substances to site soils, to characterize the chemical nature of such releases, and to collect sufficient sampling data to establish remediation goals. Known or suspected spills and disposal areas must be investigated using historical research, such as waste management records, employee interviews, vintage maps, and aerial photographs. Samples must be collected from each known or suspected area of concern. All areas known, suspected or having a reasonable probability of being contaminated by hazardous substances must be investigated. “Areas known, suspected or having a reasonable probability of being contaminated” includes any media or areas where there is evidence (such as, but not limited to, allegations or indications of spills, visual observations, field instrument readings, laboratory data, and chemical odor) of a release of hazardous substances or of materials that contain or may contain hazardous substances. The necessary sampling strategy depends on whether or not there is visible evidence of contamination. A - 2 A.2.1.1 Visible evidence of contamination At least one grab soil sample should be collected centrally from the most visibly contaminated location and horizon in each area of hazardous substance release or possible release. A.2.1.2 No visible evidence of contamination A.2.1.2.1 Surface release: a. If no visible evidence exists in an area of a suspected surface release of contaminants, sampling should be conducted by first establishing a grid with grid line intersections (nodes) spaced no farther than 50 feet apart. Samples collected for all analyses except volatile organics should be collected from 0 to 6 inches below ground surface at each grid node. Samples collected for volatile organic analysis should be collected at a depth of 6 to 12 inches below ground surface. Compositing to reduce the total number of samples may be conducted as follows: < 62,500 square feet: No more than four adjacent grid node (250 ft. x 250 ft.) samples may be composited. > 62,500 square feet: A greater number of adjacent grid node samples may be composited, but a minimum of five resulting composite samples should be submitted for laboratory analysis. At least five samples or 25% of the node samples, whichever is greater, should be collected as unmixed grab samples. Field screening methods may be used to select these unmixed samples or the unmixed samples should be collected from locations that are evenly distributed across the area of suspected contamination. The remaining samples should be collected as either unmixed grab samples or composited samples. Composited samples will be used for qualitative data only. Note: For extremely large sites (sites several acres in size), contact the branch to discuss site specific conditions. b. In addition to A.2.1.2.1.a., if the actual contaminants released are unknown, mobile contaminants or contaminants that have been detected in groundwater at the site, a soil boring should be advanced to the water table. The boring should be centrally located in the area of concern and adequately sampled at intervals from ground surface to the water table. Examples of sampling intervals include 0 to 6 inches below ground surface, every five feet from 6 inches to the water table, and at the water table. A - 3 A.2.1.2.2 Subsurface release: a. The results of the historical research should be used to conduct geophysical surveys and test trenching. Geophysical surveys should be conducted by scanning areas of concern on parallel and perpendicular traverses spaced no further than 30 feet apart. Closer spacing may be required when using a metal detector. Grids should be established in all areas that yield anomalous readings during the scanning phase. Grid nodes should be spaced no greater than 10 feet apart. Readings should be recorded at each grid node and mapped. If areas are excluded from the survey due to instrument interference, the remediating party should provide a written justification for exclusion along with a map delineating the features causing the interference with the remedial investigation report. b. Once the subsurface disposal area has been identified, it should be sampled in accordance with sections A.2.1.1, A.2.1.2.1 (b) and A.5.1 (1). If the suspected subsurface disposal area cannot be located using the methods described above, a soil boring should be advanced through the suspected disposal area in accordance with section A.2.1.2.1 (b). A.2.2 Phase II sampling The purpose of the Phase II soil investigation is to delineate the lateral and vertical extent of contamination in each area of concern to concentrations less than or equal to the soil remediation goals listed in the SRG Table, naturally occurring background levels (metals) or remediation goals established by the branch. Delineating the extent of soil contamination requires sampling all ditches, culverts or other drainage features that may have received runoff from known-contaminated areas. Field screening methods, such as soil gas testing and immunoassay test kits, may be used to help define the extent of contamination. If these methods are used, soil samples should also be collected at the expected vertical and lateral boundaries of each contaminated area and sent to the laboratory for confirmation. A.3 Groundwater Sample Collection A.3.1 Phase I sampling The purpose of the Phase I groundwater investigation is to identify all releases of hazardous substances to groundwater, to characterize the chemical nature of the contaminant plume(s), and to collect sufficient sampling data to establish remediation goals. A - 4 The need for groundwater assessment at a site with known soil contamination will be determined on a case-by-case basis. If the water table is within five feet of the ground surface, the contaminants are known to extend to within a five-foot depth of the water table, or the contaminants are somewhat mobile (such as VOCs and leachable metals) the uppermost groundwater aquifer should be sampled. At least one well should be installed centrally within each area of release meeting one or more of the above criteria. Where contaminants are believed to be “floaters” due to density and solubility in water, well screens should be positioned across the water table. Where contaminants are believed to be "sinkers," the well screen should be positioned just above the bedrock surface. In many cases, insufficient information on the nature of hazardous substance releases at the site will make it necessary to perform the Phase I groundwater field work after the Phase I soil work is completed. If the remediating party decides not to install a well within an area due to grossly contaminated conditions or concern for rupturing buried vessels, a minimum of three wells must then be installed immediately surrounding the suspect area. Once groundwater flow patterns are clearly defined, a well will be required on the hydraulically down gradient perimeter of the area of concern. A previously installed well may be appropriately located. Depending on the size of the area and nature of the release, additional monitoring wells may be necessary once the source is removed or remediated. Groundwater elevation data should be collected during each sampling event and at least every six months during the remedial investigation. If subsequent water table elevation data indicate a significant change in the direction of groundwater flow, additional wells will be necessary to adequately evaluate groundwater contamination. Groundwater elevations should be measured from a datum established by a professional land surveyor. A minimum of one sample must be collected from each monitoring well. A.3.2 Phase II sampling If Phase I sampling indicates hazardous substances are present in groundwater, additional groundwater assessment will be required. The purpose of the Phase II groundwater investigation is to delineate the lateral and vertical extent of all contaminant plumes, on - and off-site. The lateral and vertical extent of the groundwater contaminant plumes must be defined by wells free from hazardous substance concentrations that exceed branch remediation goals. Note: Site-specific conditions may require more than two phases to complete the groundwater investigation. Examples include complex hydrogeology, such as fractured bedrock aquifers, and complex contaminant behavior, such as the migration of dense non-aqueous phase liquids. A.4 Surface Water and Sediment Sample Collection A.4.1 Phase I sampling The purpose of the Phase I surface water/sediment investigation is to identify all releases of hazardous substances to surface water or sediments, to characterize the chemical A - 5 nature of such releases, and to collect sufficient sampling data to establish remediation goals. Surface water assessment will be necessary if there is a potential for contaminants to migrate to surface water via surface runoff or through a discharge of contaminated groundwater to a surface water body. If surface water assessment is required, water and sediment samples should be collected at the probable point of entry. In addition, at least one water and one sediment sample must be collected immediately upstream of the site and one water and one sediment sample collected immediately downstream of the site. These samples need only be analyzed for contaminants previously detected in other media at the site unless a non-permitted direct discharge of a hazardous substance from the site to surface water has occurred. If such a discharge has occurred, samples should be analyzed for the Phase I analyses described in section A.7.1. A.4.2 Phase II sampling If contamination is detected in any downstream sample, additional surface water/sediment assessment will be required. The purpose of the Phase II surface water/sediment investigation is to define the downstream extent of contamination to concentrations less than or equal to the remediation goals established by the branch. A.5 Other Sample Collection A.5.1 Phase I sampling 1. If any abandoned or buried vessels containing unknown materials or hazardous substances are discovered, contact the branch before proceeding with assessment. Depending on the scope, full characterization may be part of the remedy. When investigation does occur the contents should be sampled and analyzed for parameters sufficient to meet disposal or treatment facility requirements. A full scan composite soil sample(s) in the vessel area should be collected as described in section A.2.1. Soil samples will also be required at the time of vessel excavation in the immediate vicinity of all joints and junctures of subsurface pipe associated with any underground vessels known or suspected to contain or have contained hazardous substances. 2. Waste materials (e.g. fly ash, sludge, etc.) that are known or suspected to contain hazardous substances that may cause an exposure hazard and contaminate other media should be evaluated using the same procedures as if it were contaminated soil. Laboratory analyses are necessary to determine if the contaminants in the waste materials exceed the branch’s remedial goals. See section A.2 for additional information 3. Site-specific background soil samples should be collected to establish natural metals concentrations. Samples should be located away from roadways, railways, parking areas and other potential sources of contamination. Because natural metals concentrations are highly variable, the branch recommends collecting a minimum of five background soil samples. Background soil samples should be collected from depths and soil types that are representative of contaminated soils, but should not be collected from topsoil (0-6 inches). 4. If groundwater assessment is required, background groundwater samples should be A - 6 collected to established natural background conditions. Samples should be collected upgradient of any on-site sources of contamination. 5. If surface water assessment is required, background surface water and sediment samples should be collected to establish natural or anthropogenic background conditions. Samples should be collected upstream of any on-site sources of contamination. If contamination is found upstream of the site in concentrations greater than the downstream concentrations, downstream delineation may not be required. A.5.2 Phase II sampling Areas determined to have hazardous substance contamination resulting from a release from a vessel should be characterized according to section A.2.2. Note: At sites having any contamination located within 100 ft of an occupied or potentially occupied building, subsurface vapor intrusion should be considered. For additional information contact the branch. A.6 Standard Field Protocols 1. Unless otherwise noted below, field procedures relating to sample collection techniques, sample containers, sample preservation, equipment decontamination and field measurement procedures, should comply with the most current version of the U. S. Environmental Protection Agency (U.S. EPA) Region IV Science and Ecosystem Support Division (SESD) Field Branches Quality System and Technical Procedures. This information is available from the USEPA Region IV SESD at: http://www.epa.gov/region4/sesd/fbqstp/ . 2. In addition to the standard protocols outlined in the U.S. EPA information referenced above, please observe the following procedures. a. Field QC samples: (i.) minimum of one duplicate sample, per medium, per container type, per field day; (ii.) equipment rinsate blanks and VOA trip blanks are strongly recommended. Note: If site conditions, sample frequency or number of samples warrant more limited QA/QC testing, contact the branch. b. Other than composited samples collected under Section A.2.1.2.1.a., all soil, sediment and waste samples for volatiles analysis should be collected directly into sample containers without mixing. c. All soil sampling and boring locations should be staked and flagged (or surveyed) until the remedial investigation is complete. d. A professional land surveyor, registered in North Carolina, must survey all monitoring well locations. A - 7 e. Filtration of groundwater samples for metals analysis before acid digestion is not permitted. Samples must be prepared using Standard Method 3030C “Preliminary Treatment for Acid-Extractable Metals,” Standard Methods for the Examination of Water and Wastewater, latest edition. If turbidity is a problem, groundwater samples should be collected using a low-flow purging and sampling technique. Additional well development may also be necessary. f. For surface waters that are very shallow (less than six inches deep), turbulent or highly turbid, samples may be collected in a separate collection container and then decanted into the sample container. Samples for organic analysis must be decanted into the sample container immediately. Samples for metals analysis may be allowed to settle for a few minutes prior to decanting. All collection containers must be made of the same materials as the sample container. They must be pre-cleaned and handled in the same manner. g. Investigation derived waste or IDW (may include drill cuttings and muds, sampling materials, purge water, soil and residuals from testing) generated as part of assessment activities may be discharged or stored in the area of contamination and are not subject to RCRA permitting as long as the material: (1) stays on site and remains in the contaminated area, (2) is secured, (3) does not increase the spread of contamination or concentrations in a particular medium, (4) does not cause mobilization of contaminants, and (5) does not introduce contamination to uncontaminated soil (causing an increase in contaminant concentrations). In residential and public use areas, IDW will require off-property management unless it meets unrestricted use levels and disposal permission has been granted by the property owner. IDW cannot be transferred and discharged to another area of concern. A.7 Sample Analyses The remediating party must provide the laboratory with copies of Sections A.7 and A.8 of this Guidance document to ensure that appropriate analyte lists are used in the analysis of samples. A.7.1 Phase I analyses A.7.1.1 Analytical parameters Each Phase I sample should be analyzed for: 1. Concentrations (Totals Analysis) of hazardous substance list metals including antimony, arsenic, beryllium, cadmium, chromium, copper, lead, manganese, mercury, nickel, selenium, silver, thallium and zinc. Note: If chromium is a known or suspected contaminant at a site, Phase I samples should also be analyzed for hexavalent chromium. Also, if total non-speciated chromium concentrations (by totals analysis) in the Phase I samples exceed site specific natural background concentrations and the hexavalent chromium soil remedial goals, hexavalent chromium A - 8 analyses will also be required. This analysis can be done during Phase I by collecting a sufficient sample volume to run hexavalent analyses should the total chromium result exceed the hexavalent soil remedial goal. Alternatively, this testing could be performed during the next phase of work. 2. All volatile and semi-volatile compounds on the method analyte list using the analytical methods specified in Section A.7.1.2 with a library search (using the National Institute of Standards and Technology mass spectral library) to produce a list of tentatively identified compounds. The library search should identify TICs for the largest 10 peaks in each analytical fraction that have reasonable agreement with reference spectra (i.e., relative intensities of major ions agree within ± 20%). The list of identified TICs should not include laboratory control sample compounds, surrogates, matrix spike compounds, internal standards, system monitoring compounds or target compounds. Any TICs that have reasonable agreement with reference spectra, and are detected in more than one sample, should be included in all subsequent analytical work unless the remediating party can prove the compound is a laboratory contaminant. Quantification of these specific TICs must be performed before cleanup levels can be determined. 3. Pesticides, PCBs, dioxins, cyanide, formaldehyde, ammonia, nitrates, nitrites, phosphorous and any other CERCLA hazardous substances or pollutants not specifically mentioned here, if the remediating party suspects they were used at the site based on its chemical usage history. Note: In most cases the above listed parameters must be included in the first phases of testing each contaminated media. Typically, the contaminants for an area of concern at an inactive hazardous site are not clearly understood or are unknown due to the uncertainty of past practices at the site (e.g. poor recordkeeping of disposal practices, uncertainty of the business practices of a previous property owner or operator, etc.). If the remediating party believes some of the above analyses should be excluded, the remediating party should contact the branch to discuss the site specific conditions before excluding analyses. A.7.1.2 Analytical methods The analytical methods used to test for the Phase I parameters outlined in Section A.7.1.1 should be the most recent, U.S. EPA- approved update of the following analytical methods: Soil and sediment samples Volatile Organic Compounds Method 8260* Semi-volatile Organic Compounds Method 8270* Pesticides Method 8081 PCBs Method 8082 Metals (total concentrations) SW-846 Methods A - 9 Dioxins, cyanide, formaldehyde U.S. EPA method and any other analytes not covered having the lowest by above methods method detection limit *: With a library search as described in Section A.7.1.1. Water samples (including groundwater, surface water and TCLP leachate) Volatile Organic Compounds Method 8260* Semi-volatile Organic Compounds Method 8270* Pesticides Method 8081 PCBs Method 8082 Metals, dioxins, cyanide, formaldehyde U.S. EPA method and any other analytes not covered by capable of achieving above methods method detection limits less than or equal to the applicable 15A NCAC 2L groundwater standard. *: With a library search as described in Section A.7.1.1. Note 1: Standard Method 3030C “Preliminary Treatment for Acid-Extractable Metals,” Standard Methods for the Examination of Water and Wastewater, latest edition, must be used in metals analyses of water samples. Filtration of groundwater and surface water samples before acid digestion is not permitted. Highly turbid water samples for metals analysis should be collected in accordance with Appendix A, section A.6 (2)(e) and (f). Note 2: To demonstrate compliance with the branch’s soil remediation goals for the protection of groundwater, the laboratory must achieve sample quantitation limits less than or equal to the Subchapter 2L groundwater standards. Alternatively, they must state in the case narrative that the sample quantitation limits are the lowest that can be achieved using U.S. EPA-approved methods. A.7.2 Phase II analyses A.7.2.1 Analytical parameters After the first phase of sampling is conducted as specified in sections A.2 through A.5 above, any samples subsequently collected need only be analyzed for the following compounds. 1. TICs that meet the criteria in section A.7.1.1 (2) that are also CERCLA hazardous substances must be quantified in Phase II analyses using U.S. EPA methods that have the lowest method detection limit. If no U.S. EPA method exists for a particular compound, the best available analytical method should be used. A - 10 2. All CERCLA hazardous substances present above method detection limits, unless the contaminant concentration is proven through sampling to be the result of a naturally-occurring condition, or the contaminant is a common laboratory contaminant detected in concentrations below that detected in the method blank. If a compound that is not a common laboratory contaminant is detected in both the blank and a sample, another phase of sampling is necessary to demonstrate the absence or presence of the contaminant. 3. Potential degradation compounds (which are also CERCLA hazardous substances) of those CERCLA hazardous substances detected at the site. 4. If total chromium concentrations in the Phase I samples exceed site specific natural background concentrations and the hexavalent chromium soil remedial goals, hexavalent chromium analyses are required. 5. If laboratory sample dilutions were performed on Phase I samples, Phase II samples must be analyzed for the entire analytical fraction previously diluted in addition to the above items. Sample dilutions raise analytical detection limits and can mask the presence of other constituents at lower concentrations. A.7.2.2 Analytical methods Phase II and subsequent samples should be analyzed using the methods specified above for Phase I samples. Other U.S. EPA-approved methods may be substituted, if the substitute methods achieve equal or lower method detection limits. A.8 Data Reporting Laboratory reports submitted with remedial investigation reports must include the items listed below. Full CLP documentation packages are not required. 1. The laboratory report must state that the laboratory is either certified for applicable parameters under 15A NCAC Subchapter 2H .0800, or that it is a contract laboratory under the U.S. EPA's Contract Laboratory Program. 2. A signed statement from the laboratory that the samples were received in good condition, at the required temperature and that analysis of the samples complied with all procedures outlined in U.S. EPA methodology, unless otherwise specified. Any deviation from the methods, additional sample preparation, sample dilution and unrectified analytical problems, must be justified in a narrative with the laboratory report. 3. Laboratory sheets for all analytical results, including sample identification, sampling dates, date samples were received by laboratory, extraction dates, analysis dates, analytical methods used, dilution factors and sample quantitation limits. Note: The laboratory must provide a written explanation for any sample having sample quantitation limits that exceed 10 times the U.S. EPA method detection limits. A - 11 4. Laboratory sheets for all laboratory quality control samples, including results for bias and precision and control limits used. The following minimum laboratory quality control sample reporting is required: (a) at least one matrix spike and one matrix spike duplicate per sample delivery group or 14-day period, whichever is more frequent (control limits must be specified); (b) at least one method blank per sample delivery group or 12-hour period, whichever is less; and (c) system monitoring compounds, surrogate recovery required by the method and laboratory control sample analysis (acceptance criteria must be specified). All samples that exceed control limits/acceptance criteria must be flagged in the laboratory report. 5. The results of any library searches performed for “tentatively identified compounds.” The library search must identify TICs for the largest 10 peaks in each analytical fraction that have reasonable agreement with reference spectra (i.e., relative intensities of major ions agree within ± 20%) and provide percent probabilities of match. TICs should not include compounds which are laboratory control sample compounds, internal standards, surrogates, matrix spike compounds, system monitoring compounds and target compounds. Any identified TICs should be evaluated by the remediating party to determine the correlation to any contaminant source materials. 6. Data quality should be reviewed and validated by both the remediating party and the laboratory. Any quality control concerns, data qualifiers or flags should be evaluated and discussed in the associated report. 7. All constituents detected must be reported even if they were not definitively quantified. All estimated concentrations with data qualifiers must be reported. 8. Completed chain-of-custody with associated air bill (if applicable) attached. 9. The laboratory report should include the names of the individuals performing each analysis, the quality assurance officer reviewing the data and the laboratory manager. B - 1 Appendix B: Procedures for Confirmation Sampling and Analysis B.1 Introduction This appendix provides general guidance on “post-remediation” sampling and analyses required to demonstrate compliance with branch remediation goals. At most sites, the remediating party will need to prescribe additional sampling and analysis based on site-specific conditions. B.2 Soil Sampling B.2.1 Post in-situ remediation For in-situ soil remedies, such as soil vapor extraction, confirmation sampling should be designed to verify that the entire soil column has been remediated to below branch remediation goals. The remediating party must design a three-dimensional sampling grid that meets the four requirements below. 1. Design a surface sampling grid over the area(s) of concern. Grid nodes should be no more than 50 feet apart. 2. At each grid node, specify “candidate” sampling locations at the surface, at 0 - 6 inches below ground surface, and at 5-foot intervals (or less) down to the vertical limit of contamination. The result is a three-dimensional grid of "candidate" sampling locations that encompasses the area of concern. 3. Select at least two candidate locations at each grid node for sample collection, using a combination of random and biased selection. Biased samples should be collected from known “hot spots” and from soil zones that are known to be resistant to in-situ methods (e.g., clay lenses). 4. Same-depth samples from up to four adjacent grid nodes may be composited. Samples at different depths may not be composited. For samples submitted for volatiles analysis, at least five samples or 25% of the node samples, whichever is greater, must be unmixed grab samples. Field screening methods may be used to select these unmixed samples, or the unmixed samples should be collected from locations that are evenly distributed across the area of suspected contamination. The remaining samples should be collected as either unmixed grab samples or composited samples. Composited samples will be used for qualitative data only. B.2.2 Post ex-situ remediation B.2.2.1 Post-excavation sampling Post-excavation sampling must be designed to verify that all soils/wastes above branch remediation goals have been removed. Excavations should be sampled using the four requirements below. B - 2 1. Design a sampling grid over the base and sidewalls of the excavation. Grid nodes should be no more than 50 feet apart. At each grid node, collect a sample from 0-3 inches into the base or sidewall. 2. For very small excavations, collect at least one composite sample from the base and one composite sample from each sidewall. Composite samples should consist of at least four aliquots each. 3. Biased samples should also be collected from areas of residual contamination, based on visible or field-screening evidence. 4. For excavations <62,500 square feet (surface area), samples from up to four adjacent grid nodes may be composited. For excavations > 62,500 square feet (surface area), a greater number of grid nodes may be composited, but a minimum of five resulting composite samples should be submitted for laboratory analysis. For all excavations, samples from different sidewalls may not be composited. For samples submitted for volatiles analysis, at least five samples or 25% of the node samples, whichever is greater, should be unmixed grab samples. Field screening methods may be used to select these unmixed samples, or the unmixed samples should be collected from locations that are evenly distributed across the area of suspected contamination. The remaining samples should be collected as either unmixed grab samples or composited samples. Composited samples will be used for qualitative data only. B.2.2.2 Treated soil stockpiles Treated soils/wastes must meet branch remediation goals before they can be replaced on site. Treated soil stockpiles should be sampled using the following four procedures. 1. Stockpiles should be divided into equal segments of approximately 100 cubic yards each. 2. Within each segment, use either random or biased selection to locate at least three hand-auger borings. Samples should be collected from two depths within each boring (minimum six samples per segment). 3. Use visible or field-screening evidence to collect additional biased samples from areas of residual contamination. 4. Samples may be composited only within each segment. For samples submitted for volatiles analysis, at least 25% should be collected as unmixed grab samples. B.3 Groundwater Sampling Confirmation sampling must demonstrate that site groundwater has been remediated to below branch remediation goals. Demonstrate this using the following procedures. B - 3 1. Groundwater remediation systems may be shut down when two consecutive semi-annual (twice a year) sampling events demonstrate that all monitoring wells (on-site and off-site) are free of contamination above branch remediation goals. To account for the effects of seasonal fluctuations in the water table, semi-annual sampling events should be conducted in winter and summer. 2. Following system shutdown, data from at least four consecutive quarterly sampling events should demonstrate that all monitoring wells are free of contamination above branch remediation goals and contaminant concentrations are not increasing. B.4 Surface Water/Sediment Sampling Confirmation sampling must demonstrate that site surface water and sediment have been remediated to concentrations below branch remediation goals. Four consecutive quarterly sampling events should demonstrate that concentrations in downstream samples are less than or equal to concentrations in upstream samples. Alternatively, demonstrate that concentrations in downstream samples are less than or equal to branch remediation goals. B.5 Confirmation Sample Analyses Confirmation sampling should demonstrate that all contaminants identified during the remedial investigation meet applicable remedial goals. All confirmation samples should be analyzed for all contaminants identified during the remedial investigation. Confirmation samples must be analyzed using U.S. EPA methods with detection limits less than or equal to branch remediation goals, or U.S. EPA methods with the lowest available detection limits for each contaminant of concern. This appendix provides general guidance on the minimum “post-remediation” sampling and analyses necessary to demonstrate compliance with branch remediation goals. At most sites, the remediating party will need to prescribe additional sampling and analysis based on site-specific conditions. C - 1 Appendix C: Sensitive Environment Contacts CONTACT NAME & CONTACT INFORMATION SENSITIVE ENVIRONMENT NC Division of Parks and Recreation – Natural Heritage Program Harry LeGrand Harry.LeGrand@ncdenr.gov (919) 715-8697 State Parks Areas Important to Maintenance of Unique Natural Communities Sensitive Areas Identified Under the National Estuary Program Designated State Natural Areas State Seashore, Lakeshore and River Recreational Areas Rare species(state and federal Threatened and Endangered) Sensitive Aquatic Habitat State Wild & Scenic Rivers National Park Service - Public Affairs Office Anita Barnett Anita_Barnett@nps.gov (404) 507-5706 http://www.nps.gov/rivers National Seashore, Lakeshore and River Recreational Areas National Parks or Monuments Federal Designated Wild & Scenic Rivers US Forest Service Ruth Berner (828)257-4862 Designated and Proposed Federal Wilderness and Natural Areas National Preserves and Forests Federal Land Designated for the Protection of Natural Ecosystems NC Division of Water Quality Jeff Manning Basinwide Planning Unit (919)807-6415 or Melanie Williams (919) 807-6300, ext 76447 Ask for Clean Water Act 305b report State-Designated Areas for Protection or Maintenance of Aquatic Life NC Division of Forest Chris Carlson State Preserves and Forests C - 2 Resources (919) 857-4819 US Fish & Wildlife Service Pete Benjamin (919) 856-4520 x 11 Endangered Species NC Department of Cultural Resources email inquiries to: Environmental.Review@ncdcr.gov National and State Historical Sites NC Division of Coastal Management Ted Tyndall (252) 808-2808 http://dcm2.enr.state.nc.us Areas Identified Under Coastal Protection Legislation Coastal Barriers or Units of a Coastal Barrier Resources System. NC Wildlife Resources Commission David Cox (919) 528-9886 Isaac Harold Isaac.Harold@ncwildlife.org (919) 707-0053 Contact the NC Wildlife Resources Commission for the current map showing the NC Wildlife representative for the area of the site National or State Wildlife Refuges State lands designated for wildlife or game management Migratory Pathways and Feeding Areas Critical for Maintenance of Anadromous Fish Species within River Reaches or Areas in Lakes or Coastal Tidal Waters in which such Fish Spend Extended Periods of Time Spawning Areas Critical for the Maintenance of Fish/Shellfish Species within River, Lake or Coastal Tidal Waters. US Army Corps of Engineers Dorothy Harrington (919) 554-4884, x 28 Wetlands D - 1 Appendix D: Land Use Restrictions D.1 Approval Process for Use of Land Use Restrictions as a Remedy When unrestricted land use cleanup levels for soil and sediment contamination cannot be achieved, land use restrictions must be proposed as part or all of a site remedy. This remedy should be supported by the results of the feasibility study (see section 5.2.2). Depending on contaminant concentrations and the site's proposed restricted use; additional remedial action may or may not be required. Upon completion of a branch-approved remedial investigation, cleanup levels for the standard industrial/commercial exposure scenario will be provided upon written request. The remediating party should calculate cleanup levels for other site specific exposure scenarios (park settings, restricted access, etc.). A risk assessor familiar with the U.S. EPA risk assessment procedures should conduct this work. If the remediating party calculates cleanup levels, all supporting risk and exposure assessment calculations must be provided for the branch’s review and approval. In general, the use of physical barriers as a remedy for contaminated soils is the least favored option. The most favored option for contaminated soils is to restore the area as close as possible to unrestricted use remediation goals. If restoration to unrestricted use levels is not the preferred option based on the outcome of the feasibility evaluation, cleanup to industrial use levels (or other alternate scenario levels) is preferred over the use of physical barriers. Contaminant removal to levels acceptable for the proposed site use, rather than the placement of barriers, leaves the site with the most flexibility for use. It also provides the least chance for restrictive covenants to fail to adequately protect human health. If the feasibility evaluation results in a barrier-type remedy being the most suitable for the site, direct contact cleanup goals may not apply. However, as with all cases, the protection of groundwater criterion must be met. The following steps outline the process that the remediating party should follow for approval of remedies involving land use restrictions. 1. The remediating party notifies the branch in writing that it proposes the use of land use restrictions at a site. The notification letter should include either a request for standard industrial/commercial cleanup levels or indicate that site specific cleanup levels will be calculated. The remediating party should include descriptions of the current site and surrounding property use, the site’s proposed future use, and current and proposed zoning of the site and surrounding properties. 2. The remediating party submits a draft RAP that includes a land use restriction proposal. The land use restriction proposal should contain the following elements. a. A proposal stating what activities and uses should be restricted at the site. Examples of possibly precluded activities are: - Construction of buildings and other man-made structures; D - 2 - Excavating, dredging or otherwise removing soils and sediments at all, or below specified depths; - Planting or removal of vegetation including edible varieties, trees and shrubs; and - Limitations on site use (e.g., preclusion of all uses other than industrial/commercial). b. The deed book and page numbers for the property or properties where the restrictions will apply, if approved. c. The plat book and page numbers for any “Notice of an Inactive Hazardous Substance or Waste Disposal Site” (Notice) already recorded in relation to the site. d. Proposed remediation goals for restricted land use. Note: The remediating party must provide all supporting risk and exposure assessment calculations if a site specific exposure scenario is proposed. e. Written consent by the owner(s) of the site to the imposition of land use restrictions using the form provided in section D.2. f. A proposed inspection plan for the site to verify that the recorded land use restrictions are in place and activities at the site are in compliance with these restrictions. The proposed inspection plan should be included in the section of the RAP that describes planned inspection, maintenance and progress reporting. Note: The site owner or remediating party will be required to conduct an inspection of the site no less than annually. They must also submit a signed and notarized statement stating that the land use restrictions are still in effect and that conditions at the site are not in violation of the land use restrictions. The branch may later supply a form for such purposes. Owners, operators and other responsible parties are required under N.C.G.S. 130A-310.3(f) to enforce the land use restrictions and are expected to take action immediately upon discovery of a violation of the land use restrictions. Failure to do so will cause automatic revocation of branch approval of the remedial action. 3. After reviewing the proposal, the branch will approve, reject or provide comments on the proposal. If an agreement is reached on the proposal, the branch will transmit the land use restriction document to the remediating party as it is to be recorded. If the document is acceptable to the remediating party and the site owner, a final RAP including the land use restrictions document as an appendix, must be submitted. Upon receipt, the branch will initiate the 30-day public comment period in accordance with G.S. 130A-310.4(c) (2). D - 3 4. During the RAP public notice period, the remediating party should submit a draft Notice to the branch for review. The Notice takes the form of a site survey plat prepared in accordance with N.C.G.S. 130A-310.8 and branch guidance. The Notice must contain the following statement: Land Use Restrictions for this site are recorded in Book ___ and Page ___. The branch will not issue approval to proceed with recordation of the land use restrictions until the branch has received the draft Notice and concludes it is complete. Note 1: The required reference to the recorded land use restrictions (i.e. book and page numbers) are not expected to be inserted at this time because they have not yet been assigned. Note 2: If a Notice for the site has already been approved by the branch and properly recorded, the new Notice shall contain the following note: “THIS NOTICE OF INACTIVE HAZARDOUS SUBSTANCE OR WASTE DISPOSAL SITE SUPERSEDES ALL PREVIOUSLY RECORDED NOTICES OF INACTIVE HAZARDOUS SUBSTANCE OR WASTE DISPOSAL SITE FOR THIS PROPERTY.” 5. After the RAP public notice period concludes, the branch will provide written approval of the RAP and notify the remediating party to proceed with implementation of the RAP. Upon receipt of written approval of the RAP, the remediating party must return original signed copies of the final version of the land use restriction document and Notice to the branch. Upon receipt, the Chief of the Superfund Section will sign and formally approve these documents. The signed documents will then be returned to the remediating party for recording in the appropriate Register of Deeds office. The documents must also be recorded in the grantor index under the names of the owners of all affected property. Note 1: These documents should be recorded in the following order: (1) land use restriction document, (2) Notice (only after the Book and Page number where the land use restriction document has been recorded have been entered on the Notice). Note 2: The remediating party should only record a land use restrictions document and Notice that have been approved by the branch and contain the signature of the Chief of the Superfund Section. 6. Within a time period specified by the branch, the remediating party must submit certified copies of both the recorded land use restrictions document and Notice and copies of the relevant grantor index page(s) to the branch. Note: The timing of document recordation during remedial action implementation is dependent on site conditions and the proposed remedy. Failure to comply with document submittal deadlines issued by the branch will cause automatic revocation of the branch’s approval of the RAP. D - 4 D.2 Land Use Restrictions Consent Form One of the following forms (Form D-1 Individual Ownership or Form D-2-Corporate Ownership) should be submitted (see D.1. (2)(e)) to demonstrate provisional consent of the site’s owner to the imposition of land use restrictions. This consent is subject to later withdrawal when the owner reviews the land use restrictions document. D - 5 VOLUNTARY CONSENT TO IMPOSITION OF LAND USE RESTRICTIONS (Form D-1 Individual Ownership) Superfund Site, County, North Carolina I, [name of owner(s)] , owner in fee simple of real property located at [street address] , [town or city] , County, North Carolina which includes the _ Superfund site (the “Site”), am agreeable to the imposition of Land Use Restrictions (“restrictions”) partially or completely in lieu of actual remediation of hazardous substances at the Site. I understand that I will be required to document any agreement to the actual Restrictions approved for the Site by the North Carolina Department of Environment and Natural Resources, and that I may refuse to consent upon review of the actual Restrictions. IN WITNESS WHEREOF, has caused these presents to be executed on This the day of , ________. Signature: __________________________ Signatory’s name typed or printed: __________________________ STATE OF NORTH CAROLINA COUNTY OF ____________________ I, _______________________, a Notary Public, do hereby certify that _______________________ personally appeared before me this day, produced proper identification in the form of _____________________, was duly sworn and or affirmed, and declared that he or she is the owner of the property referenced above or is a duly authorized agent of said owner and that, to the best of his or her knowledge and belief, after thorough investigation, the information contained in the above Voluntary Consent to Imposition of Land Use Restrictions is accurate and complete, and he or she then signed this Voluntary Consent in my presence. WITNESS my hand and official seal this ___ day of _________, _____. _________________________________________ Notary Public My Commission expires: ___________________ [SEAL] D - 6 VOLUNTARY CONSENT TO IMPOSITION OF LAND USE RESTRICTIONS (Form D-2 Corporate Ownership) Superfund Site, County, North Carolina ___[name of corporation] , the owner in fee simple of real property located at [street address] , [town or city] , County, North Carolina which includes the Superfund site (the “Site”), hereby states that it is agreeable to the imposition of Land Use Restrictions (“restrictions”) partially or completely in lieu of actual remediation of hazardous substances at the Site. Said corporation understands and agrees that it will be required to document any agreement to the actual Restrictions approved for the Site by the North Carolina Department of Environment and Natural Resources, and that it may refuse to consent upon review of the actual Restrictions. IN WITNESS WHEREOF, ___[name of corporation] has caused these presents to be executed in its name by [name of President or other authorized agent] , its [title] , on this the day of , . [name of corporation] By: [signature of atty. or other agent if there is one] Signatory’s name typed or printed: Title: __________________________________________ STATE OF NORTH CAROLINA COUNTY OF ____________________ I, _______________________, a Notary Public, do hereby certify that _______________________ personally appeared before me this day, produced proper identification in the form of _____________________, was duly sworn and or affirmed, and declared that he or she holds the title of __________________ of [name of corporation], the owner of the property referenced above, and that he or she is a duly authorized agent of said owner, and that, to the best of his or her knowledge and belief, after thorough investigation, the information contained in the above Voluntary Consent to Imposition of Land Use Restrictions is accurate and complete, and he or she then signed this Voluntary Consent in my presence. WITNESS my hand and official seal this ___ day of _________, _____. _________________________________________ Notary Public My Commission expires: ___________________ [SEAL] D - 7 D.3 Cancellation of Land Use Restrictions If the owner believes that all hazards have been removed and that hazardous substances are no longer present at the site above unrestricted use remediation goals, the owner may subsequently request branch approval to cancel the land use restrictions. Canceling land use restrictions without prior branch approval will cause automatic revocation of approval of the RAP and will subject the party taking such action to enforcement. E - 1 Appendix E: Procedures for Demonstrating Attainment of Health-Based Soil Remedial Goals Through Averaging Contaminant Concentrations Cleanup levels for soils under the Inactive Hazardous Sites Program have three components. These are the “health-based remedial goal, the protection of groundwater remedial goal and, if applicable, the ecological risk component. All must be met at the site. Averaging of contaminant concentrations in soil may be used in demonstrating attainment of health-based cleanup levels. All of the following conditions apply to the use of such averaging. • Only sample points within one-quarter acre sectors may be averaged for comparison to unrestricted use levels. Restricted industrial use (land use restrictions approved as part of the remedial action plan) may allow for averaging over larger areas if the access and use across the area is consistent. Remote areas and areas of less frequent access may not be included in the industrial restricted-use averaging • Samples must be evenly spaced over the zone of averaging. • Only samples of the same vertical horizon may be averaged (0-6 inches for surface samples and no more than 5-foot vertical spread for subsurface samples. • The quarter-acre zone may be a circle, a square or a triangle of generally equal sides. One dimension of the zone’s perimeter may not be disproportionately longer than another. • Only actual sample data may be used for all points included in the average and not published averages for background concentrations. • The sample detection limit must be used for points where concentrations are at or below detection limits. • Clearly distinct areas of known or suspected releases or visibly delineable areas (visual characteristics define the areas that exceed cleanup levels) should not be included in any areal averaging. These releases should be delineated and addressed separately. • Clean areas adjoining the area of release should not be included in the average even if the area of release is less than a ¼ acre. • No single sample point may exceed ten times the site-specific adjusted cleanup level for all contaminants except lead. For contaminants where the limit on the maximum sample E - 2 point concentration is based on a carcinogenic effect cleanup level, the limit on the maximum sample point concentration for averaging may be waived if a demonstration is made to show that the sample point exceeding the maximum does not represent a separate area of disposal/release. For contaminants with both carcinogenic and non-carcinogenic effects, and where the carcinogenic maximum sample point limit is lower and is waived, the non-carcinogenic maximum sample concentration would apply. The non- carcinogenic limit may not be waived. For lead, no single sample point used in an average may exceed 1000 ppm for unrestricted use and no more than three times the site- specific cleanup level for restricted use. • Composite sample results may be included in an average, but must be weighted proportionally to the area they represent. For example, if one composite sample in an area represents ½ of the area and 5 others represent 1/10 of the area each, then the concentration of the first composite should be multiplied by 5, added to the sum of the other concentrations and then divided by 10 to compute the average concentration. • For characterizing soil concentrations over an area, a sampling grid with 50-foot grid node spacing must be established. For large areas that can be demonstrated to have had a consistent use and release of contaminants, sampling grids can be set up with larger grid node spacing than 50 feet. However in such cases, the concentrations may not be averaged in quarter acre zones. The upper end of the range of concentrations is presumed to represent the entire area. No averaging may be conducted. If the upper end concentration exceeds unrestricted use cleanup levels, the area would require cleanup or land use restrictions. If the contaminant concentrations exceed the restricted-use levels based on the intended use, an alternative for larger areas is to take one or more large zones within the overall area that represent the range of environmental conditions present (various geologic and geographic conditions such as slope vs. valley, wetter vs. drier) to represent the overall area. Grids with 50-foot node spacing should be established across these representative areas. This approach requires the area to be of consistent use and access and requires land use restrictions as part of the remedy. • For unique circumstances, contact the Inactive Hazardous Sites Branch for further guidance. ATTACHMENT E NCDENR – IHSB – Soil Remediation Goals (SRGs) Issued on July 2012 INACTIVE HAZARDOUS SITES BRANCH PRELIMINARY SOIL REMEDIATION GOALS (PSRG) TABLE (Updated First & Third Quarter of Calendar Year) JULY 2012 Both health-based and protection of groundwater remediation goals must be met. The protection of groundwater remediation goals listed on this table are only one alternative for achieving protection of groundwater criteria. Please refer to REC or State– lead Guidance documents for additional information on protection of groundwater remediation goals, procedures for adjusting preliminary remedial goals and other criteria that may affect remediation goals (e.g. ecological receptors, cross-media contamination). In addition, if sensitive environments are present, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Values revised since last edition are in bold. Page 1 of 24 Contaminant CAS No. Csat Preliminary Residential Health - Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Preliminary Industrial Health- Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Foot Note Protection of Ground water PSRG2 (mg/kg) Foot Note ALAR 1596-84-5 2.7E+01 C 9.6E+01 C Acephate 30560-19-1 4.8E+01 N 2.0E+02 C Acetaldehyde 75-07-0 1.1E+05 1.0E+01 C 5.2E+01 C Acetochlor 34256-82-1 2.4E+02 N 2.4E+03 N 1.0E+00 4 Acetochlor ESA NA NA NA 1.0E+01 4 Acetechlor OXA NA NA NA 1.0E+01 4 Acetone 67-64-1 1.1E+05 1.2E+04 N 1.0E+05 Max 2.4E+01 3 Acetone Cyanohydrin 75-86-5 1.1E+05 4.0E+01 N 4.2E+02 N Acetonitrile 75-05-8 1.3E+05 1.7E+02 N 7.4E+02 N Acetophenone 98-86-2 2.5E+03 1.6E+03 N 2.5E+03 Csat 3.5E+00 4 Acetylaminofluorene, 2- 53-96-3 1.3E-01 C 4.5E-01 C Acrolein 107-02-8 2.3E+04 3.0E-02 N 1.3E-01 N 1.6E-02 4 Acrylamide 79-06-1 2.3E-01 C,M 3.4E+00 C,M 3.3E-05 3 Acrylic Acid 79-10-7 6.0E+03 N 5.8E+04 N Acrylonitrile 107-13-1 1.1E+04 2.4E-01 C 1.2E+00 C Adiponitrile 111-69-3 1.0E+05 Max 1.0E+05 Max Alachlor 15972-60-8 8.7E+00 C 3.1E+01 C 4.1E-03 4 Aldicarb 116-06-3 1.2E+01 N 1.2E+02 N Aldicarb Sulfone 1646-88-4 1.2E+01 N 1.2E+02 N Aldrin 309-00-2 2.9E-02 C 1.0E-01 C 3.3E-03 4 Ally 74223-64-6 3.0E+03 N 3.0E+04 N Allyl Alcohol 107-18-6 6.0E+01 N 6.2E+02 N Allyl Chloride 107-05-1 1.4E+03 3.6E-01 N 1.5E+00 N Aluminum 7429-90-5 1.5E+04 N 1.0E+05 Max Aluminum Phosphide 20859-73-8 6.2E+00 N 8.2E+01 N Amdro 67485-29-4 3.6E+00 N 3.6E+01 N Ametryn 834-12-8 1.1E+02 N 1.1E+03 N Aminobiphenyl, 4- 92-67-1 2.3E-02 C 8.2E-02 C Aminophenol, m- 591-27-5 9.8E+02 N 9.8E+03 N Aminophenol, p- 123-30-8 2.4E+02 N 2.4E+03 N Amitraz 33089-61-1 3.0E+01 N 3.0E+02 N Ammonium Sulfamate 7773-06-0 3.2E+03 N 4.0E+04 N Aniline 62-53-3 8.5E+01 C 3.0E+02 C Anthraquinone, 9,10- 84-65-1 1.2E+01 C 4.3E+01 C Antimony (metallic) 7440-36-0 6.2E+00 N 8.2E+01 N 9.0E-01 4 Antimony Pentoxide 1314-60-9 7.8E+00 N 1.0E+02 N INACTIVE HAZARDOUS SITES BRANCH PRELIMINARY SOIL REMEDIATION GOALS (PSRG) TABLE (Updated First & Third Quarter of Calendar Year) JULY 2012 Both health-based and protection of groundwater remediation goals must be met. The protection of groundwater remediation goals listed on this table are only one alternative for achieving protection of groundwater criteria. Please refer to REC or State– lead Guidance documents for additional information on protection of groundwater remediation goals, procedures for adjusting preliminary remedial goals and other criteria that may affect remediation goals (e.g. ecological receptors, cross-media contamination). In addition, if sensitive environments are present, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Values revised since last edition are in bold. Page 2 of 24 Contaminant CAS No. Csat Preliminary Residential Health - Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Preliminary Industrial Health- Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Foot Note Protection of Ground water PSRG2 (mg/kg) Foot Note Antimony Potassium Tartrate 11071-15-1 1.4E+01 N 1.8E+02 N Antimony Tetroxide 1332-81-6 6.2E+00 N 8.2E+01 N Antimony Trioxide 1309-64-4 5.6E+04 N 1.0E+05 Max Apollo 74115-24-5 1.6E+02 N 1.6E+03 N Aramite 140-57-8 1.9E+01 C 6.9E+01 C Arsenic, Inorganic 7440-38-2 3.9E-01 C 1.6E+00 C 5.8E+00 3 Arsine 7784-42-1 5.4E-02 N 7.2E-01 N Assure 76578-14-8 1.1E+02 N 1.1E+03 N Asulam 3337-71-1 6.2E+02 N 6.2E+03 N Atrazine 1912-24-9 2.1E+00 C 7.5E+00 C 2.5E-02 3 Auramine 492-80-8 5.5E-01 C 2.0E+00 C Avermectin B1 65195-55-3 4.8E+00 N 5.0E+01 N Azobenzene 103-33-3 5.1E+00 C 2.3E+01 C 3 Barium 7440-39-3 3.0E+03 N 3.8E+04 N 5.8E+02 3 Baygon 114-26-1 4.8E+01 N 5.0E+02 N Bayleton 43121-43-3 3.6E+02 N 3.6E+03 N Baythroid 68359-37-5 3.0E+02 N 3.0E+03 N Benefin 1861-40-1 3.6E+03 N 3.6E+04 N Benomyl 17804-35-2 6.2E+02 N 6.2E+03 N Bentazon 25057-89-0 3.6E+02 N 3.6E+03 N Benzaldehyde 100-52-7 1.2E+03 1.2E+03 Csat 1.2E+03 Csat 3.0E+00 4 Benzene 71-43-2 1.8E+03 1.1E+00 C 5.4E+00 C 7.3E-03 3 Benzenediamine-2-methyl sulfate, 1,4- 6369-59-1 2.4E+00 N 2.4E+01 N Benzenethiol 108-98-5 1.3E+03 1.6E+01 N 2.0E+02 N Benzidine 92-87-5 5.0E-04 C,M 7.5E-03 C,M Benzoic Acid 65-85-0 4.8E+04 N 1.0E+05 Max 1.3E+02 3 Benzotrichloride 98-07-7 3.2E+02 4.9E-02 C 2.2E-01 C Benzyl Alcohol 100-51-6 1.2E+03 N 1.2E+04 N 3.1E+00 4 Benzyl Chloride 100-44-7 1.5E+03 1.0E+00 C 4.9E+00 C Beryllium and compounds 7440-41-7 3.2E+01 N 4.0E+02 N 6.3E+01 4 Bidrin 141-66-2 1.2E+00 N 1.2E+01 N Bifenox 42576-02-3 1.1E+02 N 1.1E+03 N Biphenthrin 82657-04-3 1.8E+02 N 1.8E+03 N Biphenyl, 1,1'- 92-52-4 2.1E+02 1.0E+01 N 4.2E+01 N 4.3E+01 3 INACTIVE HAZARDOUS SITES BRANCH PRELIMINARY SOIL REMEDIATION GOALS (PSRG) TABLE (Updated First & Third Quarter of Calendar Year) JULY 2012 Both health-based and protection of groundwater remediation goals must be met. The protection of groundwater remediation goals listed on this table are only one alternative for achieving protection of groundwater criteria. Please refer to REC or State– lead Guidance documents for additional information on protection of groundwater remediation goals, procedures for adjusting preliminary remedial goals and other criteria that may affect remediation goals (e.g. ecological receptors, cross-media contamination). In addition, if sensitive environments are present, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Values revised since last edition are in bold. Page 3 of 24 Contaminant CAS No. Csat Preliminary Residential Health - Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Preliminary Industrial Health- Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Foot Note Protection of Ground water PSRG2 (mg/kg) Foot Note Bis(2-chloro-1-methylethyl) ether 108-60-1 1.0E+03 4.6E+00 C 2.2E+01 C Bis(2-chloroethoxy)methane 111-91-1 3.6E+01 N 3.6E+02 N Bis(2-chloroethyl)ether 111-44-4 5.1E+03 2.1E-01 C 1.0E+00 C 1.4E-04 3 Bis(2-ethylhexyl)phthalate 117-81-7 3.5E+01 C 1.2E+02 C 7.2E+00 3 Bis(chloromethyl)ether 542-88-1 4.2E+03 7.7E-05 C 3.9E-04 C Bisphenol A 80-05-7 6.2E+02 N 6.2E+03 N Boron And Borates Only 7440-42-8 3.2E+03 N 4.0E+04 N 4.5E+01 3 Boron Trifluoride 7637-07-2 6.2E+02 N 8.2E+03 N Bromate 15541-45-4 9.1E-01 C 4.1E+00 C Bromo-2-chloroethane, 1- 107-04-0 2.4E+03 2.4E-02 C 1.2E-01 C Bromobenzene 108-86-1 6.8E+02 6.0E+01 N 3.6E+02 N Bromochloromethane 74-97-5 4.0E+03 3.2E+01 N 1.4E+02 N Bromodichloromethane 75-27-4 9.3E+02 2.7E-01 C 1.4E+00 C 2.9E-03 3 Bromoform 75-25-2 6.2E+01 C 2.2E+02 C 1.9E-02 3 Bromomethane 74-83-9 3.6E+03 1.5E+00 N 6.4E+00 N 4.8E-02 4 Bromophos 2104-96-3 6.2E+01 N 6.2E+02 N Bromoxynil 1689-84-5 2.4E+02 N 2.4E+03 N Bromoxynil Octanoate 1689-99-2 2.4E+02 N 2.4E+03 N Butadiene, 1,3- 106-99-0 6.7E+02 5.4E-02 C 2.6E-01 C Butanol, N- 71-36-3 1.2E+03 N 1.2E+04 N 2.8E+00 4 Butyl Benzyl Phthlate 85-68-7 2.6E+02 C 9.1E+02 C 1.5E+02 3 Butyl alcohol, sec- 78-92-2 2.4E+04 N 1.0E+05 Max 4.1E+01 4 Butyl alcohol, ter 75-65-0 NA NA 4.0E-02 4 Butylate 2008-41-5 6.2E+02 N 6.2E+03 N Butylated hydroxyanisole 25013-16-5 2.4E+03 C 8.6E+03 C Butylbenzene, n- 104-51-8 1.1E+02 1.1E+02 Csat 1.1E+02 Csat 2.4E+00 3 sec-Butyl Benzene 135-98-8 NA NA 2.2E+00 3 tert-Butyl Benzene 98-06-06 NA NA 1.7E+00 3 Butylphthalyl Butylglycolate 85-70-1 1.2E+04 N 1.0E+05 Max Cacodylic Acid 75-60-5 2.4E+02 N 2.4E+03 N Cadmium 7440-43-9 1.4E+01 N 1.6E+02 N 3.0E+00 3 Caprolactam 105-60-2 6.2E+03 N 6.2E+04 N 1.8E+01 3 Captafol 2425-06-1 3.2E+00 C 1.1E+01 C Captan 133-06-2 2.1E+02 C 7.5E+02 C INACTIVE HAZARDOUS SITES BRANCH PRELIMINARY SOIL REMEDIATION GOALS (PSRG) TABLE (Updated First & Third Quarter of Calendar Year) JULY 2012 Both health-based and protection of groundwater remediation goals must be met. The protection of groundwater remediation goals listed on this table are only one alternative for achieving protection of groundwater criteria. Please refer to REC or State– lead Guidance documents for additional information on protection of groundwater remediation goals, procedures for adjusting preliminary remedial goals and other criteria that may affect remediation goals (e.g. ecological receptors, cross-media contamination). In addition, if sensitive environments are present, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Values revised since last edition are in bold. Page 4 of 24 Contaminant CAS No. Csat Preliminary Residential Health - Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Preliminary Industrial Health- Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Foot Note Protection of Ground water PSRG2 (mg/kg) Foot Note Carbaryl 63-25-2 1.2E+03 N 1.2E+04 N Carbazole 86-74-8 NA NA 3.7E-01 4 Carbofuran 1563-66-2 6.2E+01 N 6.2E+02 N 2.4E-01 3 Carbon Disulfide 75-15-0 7.4E+02 1.6E+02 N 7.4E+02 Csat 3.8E+00 3 Carbon Tetrachloride 56-23-5 4.6E+02 6.1E-01 C 3.0E+00 C 2.1E-03 3 Carbosulfan 55285-14-8 1.2E+02 N 1.2E+03 N Carboxin 5234-68-4 1.2E+03 N 1.2E+04 N Ceric oxide 1306-38-3 1.0E+05 Max 1.0E+05 Max Chloral Hydrate 302-17-0 1.2E+03 N 1.2E+04 N Chloramben 133-90-4 1.8E+02 N 1.8E+03 N Chloranil 118-75-2 1.2E+00 C 4.3E+00 C Chlordane 12789-03-6 1.6E+00 C 6.5E+00 C 6.8E-02 3 Chlordecone (Kepone) 143-50-0 4.9E-02 C 1.7E-01 C Chlorfenvinphos 470-90-6 8.6E+00 N 8.6E+01 N Chlorimuron, Ethyl- 90982-32-4 2.4E+02 N 2.4E+03 N Chlorine 7782-50-5 1.5E+03 N 1.8E+04 N Chlorine Dioxide 10049-04-4 4.6E+02 N 6.0E+03 N Chlorite (Sodium Salt) 7758-19-2 4.6E+02 N 6.2E+03 N Chloro-1,1-difluoroethane, 1- 75-68-3 1.2E+03 1.2E+03 Csat 1.2E+03 Csat Chloro-1,3-butadiene, 2- 126-99-8 7.5E+02 9.4E-03 C 4.7E-02 C Chloro-2-methylaniline HCl, 4- 3165-93-3 1.1E+00 C 3.7E+00 C Chloro-2-methylaniline, 4- 95-69-2 4.9E+00 C 1.7E+01 C Chloroacetaldehyde, 2- 107-20-0 1.8E+00 C 6.4E+00 C Chloroacetic Acid 79-11-8 2.4E+01 N 2.4E+02 N Chloroacetophenone, 2- 532-27-4 8.6E+03 N 3.6E+04 N Chloroaniline, p- 106-47-8 2.4E+00 C 8.6E+00 C Chlorobenzene 108-90-7 7.6E+02 5.8E+01 N 2.8E+02 N 4.3E-01 3 Chlorobenzilate 510-15-6 4.4E+00 C 1.6E+01 C Chlorobenzoic Acid, p- 74-11-3 3.6E+02 N 3.6E+03 N Chlorobenzotrifluoride, 4- 98-56-6 1.2E+02 4.2E+01 N 1.2E+02 Csat Chlorobutane, 1- 109-69-3 7.3E+02 6.2E+02 N 7.3E+02 Csat Chlorodifluoromethane 75-45-6 1.7E+03 1.7E+03 Csat 1.7E+03 Csat Chloroform 67-66-3 2.5E+03 2.9E-01 C 1.5E+00 C 3.4E-01 3 Chloromethane 74-87-3 1.3E+03 2.4E+01 N 1.0E+02 N 1.5E-02 3 Chloromethyl Methyl Ether 107-30-2 2.6E+04 1.9E-02 C 9.4E-02 C INACTIVE HAZARDOUS SITES BRANCH PRELIMINARY SOIL REMEDIATION GOALS (PSRG) TABLE (Updated First & Third Quarter of Calendar Year) JULY 2012 Both health-based and protection of groundwater remediation goals must be met. The protection of groundwater remediation goals listed on this table are only one alternative for achieving protection of groundwater criteria. Please refer to REC or State– lead Guidance documents for additional information on protection of groundwater remediation goals, procedures for adjusting preliminary remedial goals and other criteria that may affect remediation goals (e.g. ecological receptors, cross-media contamination). In addition, if sensitive environments are present, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Values revised since last edition are in bold. Page 5 of 24 Contaminant CAS No. Csat Preliminary Residential Health - Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Preliminary Industrial Health- Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Foot Note Protection of Ground water PSRG2 (mg/kg) Foot Note Chloronaphthalene, Beta- 91-58-7 1.8E+02 1.8E+02 Csat 1.8E+02 Csat Chloronitrobenzene, o- 88-73-3 1.6E+00 C 5.7E+00 C Chloronitrobenzene, p- 100-00-5 1.2E+01 N 1.2E+02 N Chlorophenol, 2- 95-57-8 2.2E+04 7.8E+01 N 1.0E+03 N 4.1E-03 3 Chloropicrin 76-06-2 6.2E+02 4.2E-01 N 1.8E+00 N Chlorothalonil 1897-45-6 1.6E+02 C 5.6E+02 C Chlorotoluene, o- 95-49-8 9.1E+02 3.2E+02 N 9.1E+02 Csat 1.2E+00 3 Chlorotoluene, p- 106-43-4 2.5E+02 2.5E+02 Csat 2.5E+02 Csat 2.8E-01 4 Chlorozotocin 54749-90-5 2.0E-03 C 7.2E-03 C Chlorpropham 101-21-3 2.4E+03 N 2.4E+04 N Chlorpyrifos 2921-88-2 1.2E+01 N 1.2E+02 N Chlorpyrifos Methyl 5598-13-0 1.2E+02 N 1.2E+03 N Chlorsulfuron 64902-72-3 6.2E+02 N 6.2E+03 N Chlorthiophos 60238-56-4 9.8E+00 N 9.8E+01 N Chromium(III), Insoluble Salts 16065-83-1 2.4E+04 N 1.0E+05 Max 3.6E+05 3 Chromium(VI) 18540-29-9 2.9E-01 C,M 5.6E+00 C,M 3.8E+00 3 Cobalt 7440-48-4 4.6E+00 N 6.0E+01 N 9.0E-01 4 Copper 7440-50-8 6.2E+02 N 8.2E+03 N 7.0E+02 3 Cresol, m- 108-39-4 6.2E+02 N 6.2E+03 N 4.0E+00 3 Cresol, o- 95-48-7 6.2E+02 N 1.2E+04 N 4.1E+00 4 Cresol, p- 106-44-5 1.2E+03 N 1.2E+04 N 1.2E+01 3 Cresol, p-chloro-m- 59-50-7 1.2E+03 N 1.2E+04 N Cresols 1319-77-3 1.2E+03 N 1.2E+04 N Crotonaldehyde, trans- 123-73-9 1.7E+04 3.4E-01 C 1.5E+00 C Cumene 98-82-8 2.7E+02 2.7E+02 Csat 2.7E+02 Csat 1.3E+00 3 Cupferron 135-20-6 2.2E+00 C 7.8E+00 C Cyanazine 21725-46-2 5.8E-01 C 2.1E+00 C Cyanides ~Calcium Cyanide 592-01-8 1.6E+01 N 2.0E+02 N ~Copper Cyanide 544-92-3 7.8E+01 N 1.0E+03 N ~Cyanide (CN-) 57-12-5 1.0E+07 3.2E+02 N 4.0E+03 N 1.4E+01 3 ~Cyanogen 460-19-5 6.2E+02 N 8.2E+03 N ~Cyanogen Bromide 506-68-3 1.4E+03 N 1.8E+04 N ~Cyanogen Chloride 506-77-4 7.8E+02 N 1.0E+04 N ~Hydrogen Cyanide 74-90-8 9.4E+00 N 1.2E+02 N INACTIVE HAZARDOUS SITES BRANCH PRELIMINARY SOIL REMEDIATION GOALS (PSRG) TABLE (Updated First & Third Quarter of Calendar Year) JULY 2012 Both health-based and protection of groundwater remediation goals must be met. The protection of groundwater remediation goals listed on this table are only one alternative for achieving protection of groundwater criteria. Please refer to REC or State– lead Guidance documents for additional information on protection of groundwater remediation goals, procedures for adjusting preliminary remedial goals and other criteria that may affect remediation goals (e.g. ecological receptors, cross-media contamination). In addition, if sensitive environments are present, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Values revised since last edition are in bold. Page 6 of 24 Contaminant CAS No. Csat Preliminary Residential Health - Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Preliminary Industrial Health- Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Foot Note Protection of Ground water PSRG2 (mg/kg) Foot Note ~Potassium Cyanide 151-50-8 3.2E+01 N 4.0E+02 N ~Potassium Silver Cyanide 506-61-6 7.8E+01 N 1.0E+03 N ~Silver Cyanide 506-64-9 1.6E+03 N 2.0E+04 N ~Sodium Cyanide 143-33-9 1.6E+01 N 2.0E+02 N ~Thiocyanate 463-56-9 4.6E+03 3.2E+00 N 4.0E+01 N ~Zinc Cyanide 557-21-1 7.8E+02 N 1.0E+04 N Cyclohexane 110-82-7 1.2E+02 1.2E+02 Csat 1.2E+02 Csat Cyclohexane, 1,2,3,4,5- pentabromo-6-chloro- 87-84-3 2.1E+01 C 7.5E+01 C Cyclohexanone 108-94-1 6.2E+04 N 1.0E+05 Max Cyclohexylamine 108-91-8 2.4E+03 N 2.4E+04 N Cyhalothrin/karate 68085-85-8 6.2E+01 N 6.2E+02 N Cypermethrin 52315-07-8 1.2E+02 N 1.2E+03 N Cyromazine 66215-27-8 9.2E+01 N 9.2E+02 N DDD 72-54-8 2.0E+00 C 7.2E+00 C 2.4E-01 3 DDE, p,p'- 72-55-9 1.4E+00 C 5.1E+00 C 2.4E-01 4 DDT 50-29-3 1.7E+00 C 7.0E+00 C 3.4E-01 3 Dacthal 1861-32-1 1.2E+02 N 1.2E+03 N Dalapon 75-99-0 3.6E+02 N 3.6E+03 N 8.1E-01 4 Decabromodiphenyl ether, 2,2',3,3',4,4',5,5',6,6'-(BDE-209) 1163-19-5 8.6E+01 N 8.6E+02 N Demeton 8065-48-3 4.8E-01 N 5.0E+00 N Di(2-ethylhexyl)adipate 103-23-1 4.1E+02 C 1.4E+03 C Diallate 2303-16-4 8.0E+00 C 2.8E+01 C Diazinon 333-41-5 8.6E+00 N 8.6E+01 N Dibromo-3-chloropropane, 1,2- 96-12-8 9.8E+02 5.4E-03 C,M 6.9E-02 C,M 2.5E-04 3 Dibromobenzene, 1,4- 106-37-6 1.2E+02 N 1.2E+03 N 8.1E-01 4 Dibromochloromethane 124-48-1 8.0E+02 6.8E-01 C 3.3E+00 C 1.9E-03 3 Dibromoethane, 1,2- 106-93-4 1.3E+03 3.4E-02 C 1.7E-01 C 9.7E-05 3 Dibromomethane (Methylene Bromide) 74-95-3 2.8E+03 5.0E+00 N 2.2E+01 N 3.1E-01 4 Dibutyl Phthalate 84-74-2 1.2E+03 N 1.2E+04 N 1.9E+01 3 Dibutyltin Compounds NA 3.6E+00 N 3.6E+01 N Dicamba 1918-00-9 3.6E+02 N 3.6E+03 N Dichloro-2-butene, 1,4- 764-41-0 5.2E+02 6.9E-03 C 3.5E-02 C Dichloro-2-butene, cis-1,4- 1476-11-5 5.2E+02 6.9E-03 C 3.5E-02 C INACTIVE HAZARDOUS SITES BRANCH PRELIMINARY SOIL REMEDIATION GOALS (PSRG) TABLE (Updated First & Third Quarter of Calendar Year) JULY 2012 Both health-based and protection of groundwater remediation goals must be met. The protection of groundwater remediation goals listed on this table are only one alternative for achieving protection of groundwater criteria. Please refer to REC or State– lead Guidance documents for additional information on protection of groundwater remediation goals, procedures for adjusting preliminary remedial goals and other criteria that may affect remediation goals (e.g. ecological receptors, cross-media contamination). In addition, if sensitive environments are present, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Values revised since last edition are in bold. Page 7 of 24 Contaminant CAS No. Csat Preliminary Residential Health - Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Preliminary Industrial Health- Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Foot Note Protection of Ground water PSRG2 (mg/kg) Foot Note Dichloro-2-butene, trans-1,4- 110-57-6 7.6E+02 6.9E-03 C 3.5E-02 C Dichloroacetic Acid 79-43-6 9.7E+00 C 3.4E+01 C 2.8E-03 4 Dichlorobenzene, 1,2- 95-50-1 3.8E+02 3.8E+02 Csat 3.8E+02 Csat 2.4E-01 3 Dichlorobenzene, 1,3- 541-73-1 NA NA 2.4E+00 3 Dichlorobenzene, 1,4- 106-46-7 2.4E+00 C 1.2E+01 C 7.0E-02 3 Dichlorobenzidine, 3,3'- 91-94-1 1.1E+00 C 3.8E+00 C Dichlorobenzophenone, 4,4'- 90-98-2 1.1E+02 N 1.1E+03 N Dichlorodifluoromethane 75-71-8 8.5E+02 1.9E+01 N 8.0E+01 N 2.9E+01 3 Dichloroethane, 1,1- 75-34-3 1.7E+03 3.3E+00 C 1.7E+01 C 3.0E-02 3 Dichloroethane, 1,2- 107-06-2 3.0E+03 4.3E-01 C 2.2E+00 C 2.0E-03 3 Dichloroethylene, 1,1- 75-35-4 1.2E+03 4.8E+01 N 2.2E+02 N 4.5E-02 3 Dichloroethylene, 1,2- (Mixed Isomers) 540-59-0 1.3E+03 1.4E+02 N 1.3E+03 Csat 3.0E-01 4 Dichloroethylene, 1,2-cis- 156-59-2 2.4E+03 3.2E+01 N 4.0E+02 N 3.6E-01 3 Dichloroethylene, 1,2-trans- 156-60-5 1.7E+03 3.0E+01 N 1.4E+02 N 5.1E-01 3 Dichlorophenol, 2,4- 120-83-2 3.6E+01 N 3.6E+02 N 1.4E-02 4 Dichlorophenoxy Acetic Acid, 2,4- 94-75-7 1.4E+02 N 1.5E+03 N 3.2E-01 3 Dichlorophenoxy)butyric Acid, 4- (2,4- 94-82-6 9.8E+01 N 9.8E+02 N Dichloropropane, 1,2- 78-87-5 1.4E+03 9.4E-01 C 4.7E+00 C 3.2E-03 3 Dichloropropane, 1,3- 142-28-9 1.5E+03 3.2E+02 N 1.5E+03 Csat Dichloropropanol, 2,3- 616-23-9 3.6E+01 N 3.6E+02 N Dichloropropene, 1,3- 542-75-6 1.6E+03 1.7E+00 C 8.3E+00 C 2.3E-03 3 Dichlorvos 62-73-7 1.7E+00 C 5.9E+00 C Dicyclopentadiene 77-73-6 1.3E+02 6.2E+00 N 2.6E+01 N Dieldrin 60-57-1 3.0E-02 C 1.1E-01 C 8.1E-04 3 Diethanolamine 111-42-2 1.0E+05 M 1.0E+05 Max Diethyl Phthalate 84-66-2 9.8E+03 N 9.8E+04 N 3.7E+01 3 Diethylene Glycol Monobutyl Ether 112-34-5 3.6E+02 N 3.6E+03 N Diethylene Glycol Monoethyl Ether 111-90-0 7.2E+02 N 7.2E+03 N Diethylformamide 617-84-5 1.2E+01 N 1.2E+02 N Diethylstilbestrol 56-53-1 1.4E-03 C 4.9E-03 C Difenzoquat 43222-48-6 9.8E+02 N 9.8E+03 N INACTIVE HAZARDOUS SITES BRANCH PRELIMINARY SOIL REMEDIATION GOALS (PSRG) TABLE (Updated First & Third Quarter of Calendar Year) JULY 2012 Both health-based and protection of groundwater remediation goals must be met. The protection of groundwater remediation goals listed on this table are only one alternative for achieving protection of groundwater criteria. Please refer to REC or State– lead Guidance documents for additional information on protection of groundwater remediation goals, procedures for adjusting preliminary remedial goals and other criteria that may affect remediation goals (e.g. ecological receptors, cross-media contamination). In addition, if sensitive environments are present, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Values revised since last edition are in bold. Page 8 of 24 Contaminant CAS No. Csat Preliminary Residential Health - Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Preliminary Industrial Health- Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Foot Note Protection of Ground water PSRG2 (mg/kg) Foot Note Diflubenzuron 35367-38-5 2.4E+02 N 2.4E+03 N Difluoroethane, 1,1- 75-37-6 1.4E+03 1.4E+03 Csat 1.4E+03 Csat Dihydrosafrole 94-58-6 1.5E+01 2.4E-01 C 1.2E+00 C Diisopropyl Ether 108-20-3 2.3E+03 4.8E+02 N 2.0E+03 N 3.2E-01 3 Diisopropyl Methylphosphonate 1445-75-6 5.3E+02 5.3E+02 Csat 5.3E+02 Csat Dimethipin 55290-64-7 2.4E+02 N 2.4E+03 N Dimethoate 60-51-5 2.4E+00 N 2.4E+01 N Dimethoxybenzidine, 3,3'- 119-90-4 3.5E+01 C 1.2E+02 C Dimethyl methylphosphonate 756-79-6 2.9E+02 C 1.0E+03 C Dimethylamino azobenzene [p-] 60-11-7 1.1E-01 C 3.7E-01 C Dimethylaniline HCl, 2,4- 21436-96-4 8.4E-01 C 3.0E+00 C Dimethylaniline, 2,4- 95-68-1 2.4E+00 C 8.6E+00 C Dimethylaniline, N,N- 121-69-7 8.3E+02 3.2E+01 N 4.0E+02 N Dimethylbenzidine, 3,3'- 119-93-7 4.4E-02 C 1.6E-01 C Dimethylformamide 68-12-2 1.2E+03 N 1.2E+04 N Dimethylhydrazine, 1,1- 57-14-7 1.2E+00 N 1.2E+01 N Dimethylhydrazine, 1,2- 540-73-8 8.8E-04 C 3.1E-03 C Dimethylphenol, 2,4- 105-67-9 2.4E+02 N 2.4E+03 N 1.4E+00 3 Dimethylphenol, 2,6- 576-26-1 7.4E+00 N 7.4E+01 N Dimethylphenol, 3,4- 95-65-8 1.2E+01 N 1.2E+02 N Dimethylterephthalate 120-61-6 5.5E+00 5.5E+00 Csat 5.5E+00 Csat Dimethylvinylchloride 513-37-1 2.0E-01 C 1.0E+00 N Dinitro-o-cresol, 4,6- 534-52-1 9.8E-01 N 9.8E+00 N Dinitro-o-cyclohexyl Phenol, 4,6- 131-89-5 2.4E+01 N 2.4E+02 N Dinitrobenzene, 1,2- 528-29-0 1.2E+00 N 1.2E+01 N Dinitrobenzene, 1,3- 99-65-0 1.2E+00 N 1.2E+01 N Dinitrobenzene, 1,4- 100-25-4 1.2E+00 N 1.2E+01 N Dinitrophenol, 2,4- 51-28-5 2.4E+01 N 2.4E+02 N Dinitrotoluene Mixture, 2,4/2,6- 25321-14-6 7.2E-01 C 2.5E+00 C Dinitrotoluene, 2,4- 121-14-2 1.6E+00 C 5.5E+00 C 1.6E-03 4 Dinitrotoluene, 2,6- 606-20-2 1.2E+01 N 1.2E+02 N Dinitrotoluene, 2-Amino-4,6- 35572-78-2 3.0E+01 N 4.0E+02 N Dinitrotoluene, 4-Amino-2,6- 19406-51-0 3.0E+01 N 3.8E+02 N Dinoseb 88-85-7 1.2E+01 N 1.2E+02 N 6.3E-01 4 Di-n-octylphthalate 117-84-0 NA NA 3.8E+01 3 INACTIVE HAZARDOUS SITES BRANCH PRELIMINARY SOIL REMEDIATION GOALS (PSRG) TABLE (Updated First & Third Quarter of Calendar Year) JULY 2012 Both health-based and protection of groundwater remediation goals must be met. The protection of groundwater remediation goals listed on this table are only one alternative for achieving protection of groundwater criteria. Please refer to REC or State– lead Guidance documents for additional information on protection of groundwater remediation goals, procedures for adjusting preliminary remedial goals and other criteria that may affect remediation goals (e.g. ecological receptors, cross-media contamination). In addition, if sensitive environments are present, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Values revised since last edition are in bold. Page 9 of 24 Contaminant CAS No. Csat Preliminary Residential Health - Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Preliminary Industrial Health- Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Foot Note Protection of Ground water PSRG2 (mg/kg) Foot Note Dioxane, 1,4- 123-91-1 4.9E+00 C 1.7E+01 C 1.2E-02 3 Dioxins ~Hexachlorodibenzo-p-dioxin, Mixture NA 9.4E-05 C 3.9E-04 C ~TCDD, 2,3,7,8- 1746-01-6 4.5E-06 C 1.8E-05 C 5 1.1E-06 3 Diphenamid 957-51-7 3.6E+02 N 3.6E+03 N Diphenyl Sulfone 127-63-9 9.8E+00 N 9.8E+01 N Diphenylamine 122-39-4 3.0E+02 N 3.0E+03 N Diphenylhydrazine, 1,2- 122-66-7 6.1E-01 C 2.2E+00 C Diquat 85-00-7 2.6E+01 N 2.8E+02 N 3.8E+00 4 Direct Black 38 1937-37-7 6.6E-02 C 2.3E-01 C Direct Blue 6 2602-46-2 6.6E-02 C 2.3E-01 C Direct Brown 95 16071-86-6 7.3E-02 C 2.6E-01 C Disulfoton 298-04-4 4.8E-01 N 5.0E+00 N 6.2E-03 3 Dithiane, 1,4- 505-29-3 1.2E+02 N 1.2E+03 N Diuron 330-54-1 2.4E+01 N 2.4E+02 N Dodine 2439-10-3 4.8E+01 N 5.0E+02 N EPTC 759-94-4 4.1E+02 4.0E+02 N 4.1E+02 Csat Endosulfan 115-29-7 7.4E+01 N 7.4E+02 N 5.6E+00 3 Endosulfan Sulfate 1031-07-08 NA NA 8.0E+00 4 Endothall 145-73-3 2.4E+02 N 2.4E+03 N 4.4E-01 4 Endrin 72-20-8 3.6E+00 N 3.6E+01 N 8.1E-01 3 Epichlorohydrin 106-89-8 1.1E+04 4.0E+00 N 1.8E+01 N 1.7E-02 3 Ethanol 64-17-5 NA NA 1.6E+01 4 Epoxybutane, 1,2- 106-88-7 1.5E+04 3.4E+01 N 1.4E+02 N Ethephon 16672-87-0 6.2E+01 N 6.2E+02 N Ethion 563-12-2 6.2E+00 N 6.2E+01 N Ethoxyethanol Acetate, 2- 111-15-9 1.2E+03 N 1.2E+04 N Ethoxyethanol, 2- 110-80-5 4.8E+03 N 5.0E+04 N Ethyl Acetate 141-78-6 1.1E+04 1.1E+04 Csat 1.1E+04 Csat 1.2E+01 3 Ethyl Acrylate 140-88-5 2.5E+03 1.3E+01 C 6.0E+01 C Ethyl Chloride 75-00-3 2.1E+03 2.1E+03 Csat 2.1E+03 Csat 1.6E+01 3 Ethyl Ether 60-29-7 1.0E+04 3.2E+03 N 1.0E+04 Csat Ethyl Methacrylate 97-63-2 1.1E+03 3.0E+02 N 1.1E+03 Csat 3 Ethyl-p-nitrophenyl 2104-64-5 1.2E-01 N 1.2E+00 N INACTIVE HAZARDOUS SITES BRANCH PRELIMINARY SOIL REMEDIATION GOALS (PSRG) TABLE (Updated First & Third Quarter of Calendar Year) JULY 2012 Both health-based and protection of groundwater remediation goals must be met. The protection of groundwater remediation goals listed on this table are only one alternative for achieving protection of groundwater criteria. Please refer to REC or State– lead Guidance documents for additional information on protection of groundwater remediation goals, procedures for adjusting preliminary remedial goals and other criteria that may affect remediation goals (e.g. ecological receptors, cross-media contamination). In addition, if sensitive environments are present, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Values revised since last edition are in bold. Page 10 of 24 Contaminant CAS No. Csat Preliminary Residential Health - Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Preliminary Industrial Health- Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Foot Note Protection of Ground water PSRG2 (mg/kg) Foot Note Phosphonate Ethylbenzene 100-41-4 4.8E+02 5.4E+00 C 2.7E+01 C 8.1E+00 3 Ethylene Cyanohydrin 109-78-4 3.6E+02 N 3.6E+03 N Ethylene Diamine 107-15-3 1.1E+03 N 1.1E+04 N Ethylene Glycol 107-21-1 2.4E+04 N 1.0E+05 Max 4.0E+01 3 Ethylene Glycol Monobutyl Ether 111-76-2 1.2E+03 N 1.2E+04 N Ethylene Oxide 75-21-8 1.2E+05 1.7E-01 C 8.3E-01 C Ethylene Thiourea 96-45-7 9.8E-01 N 9.8E+00 N Ethyleneimine 151-56-4 1.5E+05 2.3E-03 C 1.0E-02 C Ethylphthalyl Ethyl Glycolate 84-72-0 3.6E+04 N 1.0E+05 Max Express 101200-48-0 9.8E+01 N 9.8E+02 N Fenamiphos 22224-92-6 3.0E+00 N 3.0E+01 N Fenpropathrin 39515-41-8 3.0E+02 N 3.0E+03 N Fluometuron 2164-17-2 1.6E+02 N 1.6E+03 N Fluoride 16984-48-8 6.2E+02 N 8.2E+03 N Fluorine (Soluble Fluoride) 7782-41-4 9.4E+02 N 1.2E+04 N 6.0E+03 3 Fluridone 59756-60-4 9.8E+02 N 9.8E+03 N Flurprimidol 56425-91-3 2.4E+02 N 2.4E+03 N Flutolanil 66332-96-5 7.4E+02 N 7.4E+03 N Fluvalinate 69409-94-5 1.2E+02 N 1.2E+03 N Folpet 133-07-3 1.4E+02 C 4.9E+02 C Fomesafen 72178-02-0 2.6E+00 C 9.1E+00 C Fonofos 944-22-9 2.4E+01 N 2.4E+02 N Formaldehyde 50-00-0 2.4E+03 N 2.4E+04 N 2.4E+00 3 Formic Acid 64-18-6 9.8E+03 N 8.4E+04 N Fosetyl-AL 39148-24-8 3.6E+04 N 1.0E+05 Max Furans ~Dibenzofuran 132-64-9 1.7E+02 1.6E+01 N 1.7E+02 Csat 5.2E+00 4 ~Furan 110-00-9 6.2E+03 1.6E+01 N 2.0E+02 N Furazolidone 67-45-8 1.3E-01 C 4.5E-01 C Furfural 98-01-1 3.6E+01 N 3.6E+02 N Furium 531-82-8 3.2E-01 C 1.1E+00 C Furmecyclox 60568-05-0 1.6E+01 C 5.7E+01 C Glufosinate, Ammonium 77182-82-2 4.8E+00 N 5.0E+01 N INACTIVE HAZARDOUS SITES BRANCH PRELIMINARY SOIL REMEDIATION GOALS (PSRG) TABLE (Updated First & Third Quarter of Calendar Year) JULY 2012 Both health-based and protection of groundwater remediation goals must be met. The protection of groundwater remediation goals listed on this table are only one alternative for achieving protection of groundwater criteria. Please refer to REC or State– lead Guidance documents for additional information on protection of groundwater remediation goals, procedures for adjusting preliminary remedial goals and other criteria that may affect remediation goals (e.g. ecological receptors, cross-media contamination). In addition, if sensitive environments are present, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Values revised since last edition are in bold. Page 11 of 24 Contaminant CAS No. Csat Preliminary Residential Health - Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Preliminary Industrial Health- Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Foot Note Protection of Ground water PSRG2 (mg/kg) Foot Note Glutaraldehyde 111-30-8 2.2E+04 N 9.6E+04 N Glycidyl 765-34-4 4.8E+00 N 5.0E+01 N Glyphosate 1071-83-6 1.2E+03 N 1.2E+04 N Goal 42874-03-3 3.6E+01 N 3.6E+02 N Guthion 86-50-0 3.6E+01 N 3.6E+02 N Haloxyfop, Methyl 69806-40-2 6.2E-01 N 6.2E+00 N Harmony 79277-27-3 1.6E+02 N 1.6E+03 N Heptachlor 76-44-8 1.1E-01 C 3.8E-01 C 6.6E-03 3 Heptachlor Epoxide 1024-57-3 5.3E-02 C 1.9E-01 C 8.2E-04 3 Hexabromobenzene 87-82-1 2.4E+01 N 2.4E+02 N Hexabromodiphenyl ether, 2,2',4,4',5,5'- (BDE-153) 68631-49-2 2.4E+00 N 2.4E+01 N N Heptane 8031-33-2 NA NA 5.8E+01 3 Hexachlorobenzene 118-74-1 3.0E-01 C 1.1E+00 C 2.6E-03 3 Hexachlorobutadiene 87-68-3 6.2E+00 C 2.2E+01 C 8.7E-03 3 Hexachlorocyclohexane, Alpha- 319-84-6 7.7E-02 C 2.7E-01 C 3.6E-04 4 Hexachlorocyclohexane, Beta- 319-85-7 2.7E-01 C 9.6E-01 C 1.2E-03 4 Hexachlorocyclohexane, Gamma- (Lindane) 58-89-9 5.2E-01 C 2.1E+00 C 1.8E-03 3 Hexachlorocyclohexane, Technical 608-73-1 2.7E-01 C 9.6E-01 C 1.2E-03 3 Hexachlorocyclopentadiene 77-47-4 7.4E+01 N 7.4E+02 N Hexachloroethane 67-72-1 8.6E+00 N 4.3E+01 N Hexachlorophene 70-30-4 3.6E+00 N 3.6E+01 N Hexahydro-1,3,5-trinitro-1,3,5- triazine (RDX) 121-82-4 5.6E+00 C 2.4E+01 C Hexamethylene Diisocyanate, 1,6- 822-06-0 5.2E+03 6.8E-01 N 2.8E+00 N Hexamethylphosphoramide 680-31-9 4.8E+00 N 5.0E+01 N Hexane, N- 110-54-3 1.4E+02 1.1E+02 N 1.4E+02 Csat 5.4E+01 3 Hexanedioic Acid 124-04-9 2.4E+04 N 1.0E+05 Max Hexanone, 2- 591-78-6 3.3E+03 4.2E+01 N 2.8E+02 N 1.7E-01 4 Hexazinone 51235-04-2 4.0E+02 N 4.0E+03 N Hydrazine 302-01-2 2.1E-01 C 9.5E-01 C Hydrazine Sulfate 10034-93-2 2.1E-01 C 9.5E-01 C Hydrogen Chloride 7647-01-0 1.0E+05 Max 1.0E+05 Max INACTIVE HAZARDOUS SITES BRANCH PRELIMINARY SOIL REMEDIATION GOALS (PSRG) TABLE (Updated First & Third Quarter of Calendar Year) JULY 2012 Both health-based and protection of groundwater remediation goals must be met. The protection of groundwater remediation goals listed on this table are only one alternative for achieving protection of groundwater criteria. Please refer to REC or State– lead Guidance documents for additional information on protection of groundwater remediation goals, procedures for adjusting preliminary remedial goals and other criteria that may affect remediation goals (e.g. ecological receptors, cross-media contamination). In addition, if sensitive environments are present, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Values revised since last edition are in bold. Page 12 of 24 Contaminant CAS No. Csat Preliminary Residential Health - Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Preliminary Industrial Health- Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Foot Note Protection of Ground water PSRG2 (mg/kg) Foot Note Hydrogen Fluoride 7664-39-3 6.2E+02 N 8.2E+03 N Hydrogen Sulfide 7783-06-4 1.0E+05 Max 1.0E+05 Max Hydroquinone 123-31-9 8.1E+00 C 2.9E+01 C Imazalil 35554-44-0 1.6E+02 N 1.6E+03 N Imazaquin 81335-37-7 3.0E+03 N 3.0E+04 N Iodine 7553-56-2 1.6E+02 N 2.0E+03 N Iprodione 36734-19-7 4.8E+02 N 5.0E+03 N Iron 7439-89-6 1.1E+04 N 1.0E+05 Max 1.5E+02 3 Isobutyl Alcohol 78-83-1 3.6E+03 N 3.6E+04 N Isophorone 78-59-1 5.1E+02 C 1.8E+03 C 2.1E-01 3 Isopropalin 33820-53-0 1.8E+02 N 1.8E+03 N Isopropanol 67-63-0 1.0E+05 Max 1.0E+05 Max Isopropyl Methyl Phosphonic Acid 1832-54-8 1.2E+03 N 1.2E+04 N 4-Isopropyl Toluene 99-87-6 6.8E-01 4 Isoxaben 82558-50-7 6.2E+02 N 6.2E+03 N JP-7 NA 1.0E+05 Max 1.0E+05 Max Kerb 23950-58-5 9.2E+02 N 9.2E+03 N Lactofen 77501-63-4 2.4E+01 N 2.4E+02 N Lead Compounds ~Lead acetate 301-04-2 1.7E+00 C 6.2E+00 C ~Lead and Compounds 7439-92-1 4.0E+02 8.0E+02 6 2.7E+02 3 ~Lead subacetate 1335-32-6 1.3E+01 C 4.5E+01 C ~Tetraethyl Lead 78-00-2 1.2E-03 N 1.2E-02 N Linuron 330-55-2 2.4E+01 N 2.4E+02 N Lithium 7439-93-2 3.2E+01 N 4.0E+02 N Londax 83055-99-6 2.4E+03 N 2.4E+04 N MCPA 94-74-6 6.2E+00 N 6.2E+01 N MCPB 94-81-5 1.2E+02 N 1.2E+03 N MCPP 93-65-2 1.2E+01 N 1.2E+02 N Malathion 121-75-5 2.4E+02 N 2.4E+03 N Maleic Anhydride 108-31-6 1.2E+03 N 1.2E+04 N Maleic Hydrazide 123-33-1 6.2E+03 N 6.2E+04 N Malononitrile 109-77-3 1.2E+00 N 1.2E+01 N Mancozeb 8018-01-7 3.6E+02 N 3.6E+03 N INACTIVE HAZARDOUS SITES BRANCH PRELIMINARY SOIL REMEDIATION GOALS (PSRG) TABLE (Updated First & Third Quarter of Calendar Year) JULY 2012 Both health-based and protection of groundwater remediation goals must be met. The protection of groundwater remediation goals listed on this table are only one alternative for achieving protection of groundwater criteria. Please refer to REC or State– lead Guidance documents for additional information on protection of groundwater remediation goals, procedures for adjusting preliminary remedial goals and other criteria that may affect remediation goals (e.g. ecological receptors, cross-media contamination). In addition, if sensitive environments are present, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Values revised since last edition are in bold. Page 13 of 24 Contaminant CAS No. Csat Preliminary Residential Health - Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Preliminary Industrial Health- Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Foot Note Protection of Ground water PSRG2 (mg/kg) Foot Note Maneb 12427-38-2 6.2E+01 N 6.2E+02 N Manganese (Non-diet) 7439-96-5 3.6E+02 N 4.6E+03 N 6.5E+01 3 Mephosfolan 950-10-7 1.1E+00 N 1.1E+01 N Mepiquat Chloride 24307-26-4 3.6E+02 N 3.6E+03 N Mercury Compounds ~Mercuric Chloride (and other Mercury salts) 7487-94-7 4.6E+00 N 6.2E+01 N 1.0E+00 3 ~Mercury (elemental) 7439-97-6 3.1E+00 2.0E+00 N 3.1E+00 Csat 1.0E+00 3 ~Methyl Mercury 22967-92-6 1.6E+00 N 2.0E+01 N ~Phenylmercuric Acetate 62-38-4 9.8E-01 N 9.8E+00 N Merphos 150-50-5 3.6E-01 N 3.6E+00 N Merphos Oxide 78-48-8 3.6E-01 N 3.6E+00 N Metalaxyl 57837-19-1 7.4E+02 N 7.4E+03 N Methacrylonitrile 126-98-7 4.6E+03 6.4E-01 N 3.6E+00 N Methamidophos 10265-92-6 6.2E-01 N 6.2E+00 N Methanol 67-56-1 6.2E+03 N 6.2E+04 N 1.6E+01 3 Methidathion 950-37-8 1.2E+01 N 1.2E+02 N Methomyl 16752-77-5 3.0E+02 N 3.0E+03 N Methoxy-5-nitroaniline, 2- 99-59-2 9.9E+00 C 3.5E+01 C Methoxychlor 72-43-5 6.2E+01 N 6.2E+02 N 2.2E+01 3 Methoxyethanol Acetate, 2- 110-49-6 9.8E+01 N 9.8E+02 N Methoxyethanol, 2- 109-86-4 6.2E+01 N 6.2E+02 N Methyl Acetate 79-20-9 2.9E+04 1.6E+04 N 2.9E+04 Csat Methyl Acrylate 96-33-3 6.8E+03 4.6E+02 N 6.2E+03 N Methyl Ethyl Ketone (2- Butanone) 78-93-3 2.8E+04 5.6E+03 N 2.8E+04 N 1.6E+01 3 Methyl Hydrazine 60-34-4 1.2E+01 N 1.2E+02 N Methyl Isobutyl Ketone (4- methyl-2-pentanone) 108-10-1 3.4E+03 1.1E+03 N 3.4E+03 Csat 4.3E-01 4 Methyl Isocyanate 624-83-9 1.7E+04 1.0E+00 N 4.2E+00 N Methyl Methacrylate 80-62-6 2.4E+03 9.6E+02 N 2.4E+03 Csat 1.1E-01 4 Methyl Parathion 298-00-0 3.0E+00 N 3.0E+01 N Methyl Phosphonic Acid 993-13-5 7.4E+02 N 7.4E+03 N Methyl Styrene (Mixed Isomers) 25013-15-4 3.8E+02 5.0E+01 N 3.2E+02 N Methyl methanesulfonate 66-27-3 4.9E+00 C 1.7E+01 C INACTIVE HAZARDOUS SITES BRANCH PRELIMINARY SOIL REMEDIATION GOALS (PSRG) TABLE (Updated First & Third Quarter of Calendar Year) JULY 2012 Both health-based and protection of groundwater remediation goals must be met. The protection of groundwater remediation goals listed on this table are only one alternative for achieving protection of groundwater criteria. Please refer to REC or State– lead Guidance documents for additional information on protection of groundwater remediation goals, procedures for adjusting preliminary remedial goals and other criteria that may affect remediation goals (e.g. ecological receptors, cross-media contamination). In addition, if sensitive environments are present, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Values revised since last edition are in bold. Page 14 of 24 Contaminant CAS No. Csat Preliminary Residential Health - Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Preliminary Industrial Health- Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Foot Note Protection of Ground water PSRG2 (mg/kg) Foot Note Methyl tert-Butyl Ether (MTBE) 1634-04-4 8.9E+03 4.3E+01 C 2.2E+02 C 8.5E-02 3 Methyl-1,4-benzenediamine dihydrochloride, 2- 615-45-2 2.4E+00 N 2.4E+01 N Methyl-5-Nitroaniline, 2- 99-55-8 5.4E+01 C 1.9E+02 C Methyl-N-nitro-N- nitrosoguanidine, N- 70-25-7 5.9E-02 C 2.1E-01 C Methylaniline Hydrochloride, 2- 636-21-5 3.7E+00 C 1.3E+01 C Methylarsonic acid 124-58-3 1.2E+02 N 1.2E+03 N Methylbenzene,1-4-diamine monohydrochloride, 2- 74612-12-7 2.4E+00 N 2.4E+01 N Methylbenzene-1,4-diamine sulfate, 2- 615-50-9 2.4E+00 N 2.4E+01 N Methylcholanthrene, 3- 56-49-5 5.2E-03 C,M 7.8E-02 C,M Methylene Chloride 75-09-2 3.3E+03 5.6E+01 C,M 6.2E+02 N,M 2.3E-02 3 Methylene-bis(2-chloroaniline), 4,4'- 101-14-4 1.2E+00 C,M 1.7E+01 C,M Methylene-bis(N,N-dimethyl) Aniline, 4,4'- 101-61-1 1.1E+01 C 3.7E+01 C Methylenebisbenzenamine, 4,4'- 101-77-9 3.0E-01 C 1.1E+00 C Methylenediphenyl Diisocyanate 101-68-8 1.0E+05 Max 1.0E+05 Max Methylstyrene, Alpha- 98-83-9 5.0E+02 5.0E+02 Csat 5.0E+02 Csat Metolachlor 51218-45-2 1.8E+03 N 1.8E+04 N Metribuzin 21087-64-9 3.0E+02 N 3.0E+03 N Mineral oils 8012-95-1 3.6E+04 N 1.0E+05 Max Mirex 2385-85-5 2.7E-02 C 9.6E-02 C Molinate 2212-67-1 2.4E+01 N 2.4E+02 N Molybdenum 7439-98-7 7.8E+01 N 1.0E+03 N Monochloramine 10599-90-3 1.6E+03 N 2.0E+04 N Monomethylaniline 100-61-8 2.4E+01 N 2.4E+02 N N,N'-Diphenyl-1,4- benzenediamine 74-31-7 3.6E+00 N 3.6E+01 N Naled 300-76-5 2.4E+01 N 2.4E+02 N Naphtha, High Flash Aromatic (HFAN) 64724-95-6 4.6E+02 N 6.2E+03 N Naphthylamine, 2- 91-59-8 2.7E-01 C 9.6E-01 C Napropamide 15299-99-7 1.2E+03 N 1.2E+04 N INACTIVE HAZARDOUS SITES BRANCH PRELIMINARY SOIL REMEDIATION GOALS (PSRG) TABLE (Updated First & Third Quarter of Calendar Year) JULY 2012 Both health-based and protection of groundwater remediation goals must be met. The protection of groundwater remediation goals listed on this table are only one alternative for achieving protection of groundwater criteria. Please refer to REC or State– lead Guidance documents for additional information on protection of groundwater remediation goals, procedures for adjusting preliminary remedial goals and other criteria that may affect remediation goals (e.g. ecological receptors, cross-media contamination). In addition, if sensitive environments are present, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Values revised since last edition are in bold. Page 15 of 24 Contaminant CAS No. Csat Preliminary Residential Health - Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Preliminary Industrial Health- Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Foot Note Protection of Ground water PSRG2 (mg/kg) Foot Note Nickel Carbonyl 13463-39-3 7.4E+02 N 8.8E+03 N Nickel Oxide 1313-99-1 7.6E+02 N 9.4E+03 N Nickel Refinery Dust NA 7.4E+02 N 8.8E+03 N Nickel Soluble Salts 7440-02-0 3.0E+02 N 4.0E+03 N 1.3E+02 3 Nickel Subsulfide 12035-72-2 3.8E-01 C 1.7E+00 C Nitrate 14797-55-8 2.6E+04 N 1.0E+05 Max Nitrite 14797-65-0 1.6E+03 N 2.0E+04 N Nitroaniline, 2- 88-74-4 1.2E+02 N 1.2E+03 N Nitroaniline, 4- 100-01-6 2.4E+01 C 8.6E+01 C Nitrobenzene 98-95-3 3.1E+03 4.8E+00 C 2.4E+01 C Nitrocellulose 9004-70-0 1.0E+05 Max 1.0E+05 Max Nitrofurantoin 67-20-9 8.6E+02 N 8.6E+03 N Nitrofurazone 59-87-0 3.7E-01 C 1.3E+00 C Nitroglycerin 55-63-0 1.2E+00 N 1.2E+01 N Nitroguanidine 556-88-7 1.2E+03 N 1.2E+04 N Nitromethane 75-52-5 1.8E+04 4.9E+00 C 2.5E+01 C Nitropropane, 2- 79-46-9 4.9E+03 1.3E-02 C 6.4E-02 C Nitroso-N-ethylurea, N- 759-73-9 4.3E-03 C,M 6.4E-02 C,M Nitroso-N-methylurea, N- 684-93-5 9.6E-04 C,M 1.4E-02 C,M Nitroso-di-N-butylamine, N- 924-16-3 7.1E+03 8.7E-02 C 4.0E-01 C Nitroso-di-N-propylamine, N- 621-64-7 6.9E-02 C 2.5E-01 C Nitrosodiethanolamine, N- 1116-54-7 1.7E-01 C 6.2E-01 C Nitrosodiethylamine, N- 55-18-5 7.7E-04 C,M 1.1E-02 C,M Nitrosodimethylamine, N- 62-75-9 2.3E-03 C,M 3.4E-02 C,M 3.1E-06 3 Nitrosodiphenylamine, N- 86-30-6 9.9E+01 C 3.5E+02 C Nitrosomethylethylamine, N- 10595-95-6 2.2E-02 C 7.8E-02 C Nitrosomorpholine [N-] 59-89-2 7.3E-02 C 2.6E-01 C Nitrosopiperidine [N-] 100-75-4 5.2E-02 C 1.8E-01 C Nitrosopyrrolidine, N- 930-55-2 2.3E-01 C 8.2E-01 C Nitrotoluene, m- 99-08-1 1.2E+00 N 1.2E+01 N Nitrotoluene, o- 88-72-2 1.5E+03 2.9E+00 C 1.3E+01 C Nitrotoluene, p- 99-99-0 3.0E+01 C 1.1E+02 C Nonane, n- 111-84-2 6.9E+00 4.2E+00 N 6.9E+00 Csat Norflurazon 27314-13-2 4.8E+02 N 5.0E+03 N Nustar 85509-19-9 8.6E+00 N 8.6E+01 N Octabromodiphenyl Ether 32536-52-0 3.6E+01 N 3.6E+02 N INACTIVE HAZARDOUS SITES BRANCH PRELIMINARY SOIL REMEDIATION GOALS (PSRG) TABLE (Updated First & Third Quarter of Calendar Year) JULY 2012 Both health-based and protection of groundwater remediation goals must be met. The protection of groundwater remediation goals listed on this table are only one alternative for achieving protection of groundwater criteria. Please refer to REC or State– lead Guidance documents for additional information on protection of groundwater remediation goals, procedures for adjusting preliminary remedial goals and other criteria that may affect remediation goals (e.g. ecological receptors, cross-media contamination). In addition, if sensitive environments are present, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Values revised since last edition are in bold. Page 16 of 24 Contaminant CAS No. Csat Preliminary Residential Health - Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Preliminary Industrial Health- Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Foot Note Protection of Ground water PSRG2 (mg/kg) Foot Note Octahydro-1,3,5,7-tetranitro- 1,3,5,7-tetra (HMX) 2691-41-0 7.6E+02 N 9.8E+03 N Octamethylpyrophosphoramide 152-16-9 2.4E+01 N 2.4E+02 N Oryzalin 19044-88-3 6.2E+02 N 6.2E+03 N Oxadiazon 19666-30-9 6.2E+01 N 6.2E+02 N Oxamyl 23135-22-0 3.0E+02 N 3.0E+03 N 8.4E-01 3 Paclobutrazol 76738-62-0 1.6E+02 N 1.6E+03 N Paraquat Dichloride 1910-42-5 5.4E+01 N 5.6E+02 N Parathion 56-38-2 7.4E+01 N 7.4E+02 N Pebulate 1114-71-2 6.2E+02 N 6.2E+03 N Pendimethalin 40487-42-1 4.8E+02 N 5.0E+03 N Pentabromodiphenyl Ether 32534-81-9 2.4E+01 N 2.4E+02 N Pentabromodiphenyl ether, 2,2',4,4',5- (BDE-99) 60348-60-9 1.2E+00 N 1.2E+01 N Pentachlorobenzene 608-93-5 9.8E+00 N 9.8E+01 N Pentachloroethane 76-01-7 5.4E+00 C 1.9E+01 C Pentachloronitrobenzene 82-68-8 1.9E+00 C 6.6E+00 C Pentachlorophenol 87-86-5 8.9E-01 C 2.7E+00 C 3.1E-02 3 Pentaerythritol tetranitrate (PETN) 78-11-5 2.4E+01 N 2.4E+02 N Pentane, n- 109-66-0 3.9E+02 1.7E+02 N 3.9E+02 Csat Perchlorates ~Ammonium Perchlorate 7790-98-9 1.1E+01 N 1.4E+02 N ~Lithium Perchlorate 7791-03-9 1.1E+01 N 1.4E+02 N ~Perchlorate and Perchlorate Salts 14797-73-0 1.1E+01 N 1.4E+02 N ~Potassium Perchlorate 7778-74-7 1.1E+01 N 1.4E+02 N ~Sodium Perchlorate 7601-89-0 1.1E+01 N 1.4E+02 N Perfluorooctanoic acid (PFOA) 335-12-1 NA NA 1.1E+00 4 Permethrin 52645-53-1 6.2E+02 N 6.2E+03 N Phenacetin 62-44-2 2.2E+02 C 7.8E+02 C Phenmedipham 13684-63-4 3.0E+03 N 3.0E+04 N Phenol 108-95-2 3.6E+03 N 3.6E+04 N 2.3E-01 3 Phenothiazine 92-84-2 6.2E+00 N 6.2E+01 N Phenylenediamine, m- 108-45-2 7.4E+01 N 7.4E+02 N Phenylenediamine, o- 95-54-5 1.0E+01 C 3.7E+01 C INACTIVE HAZARDOUS SITES BRANCH PRELIMINARY SOIL REMEDIATION GOALS (PSRG) TABLE (Updated First & Third Quarter of Calendar Year) JULY 2012 Both health-based and protection of groundwater remediation goals must be met. The protection of groundwater remediation goals listed on this table are only one alternative for achieving protection of groundwater criteria. Please refer to REC or State– lead Guidance documents for additional information on protection of groundwater remediation goals, procedures for adjusting preliminary remedial goals and other criteria that may affect remediation goals (e.g. ecological receptors, cross-media contamination). In addition, if sensitive environments are present, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Values revised since last edition are in bold. Page 17 of 24 Contaminant CAS No. Csat Preliminary Residential Health - Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Preliminary Industrial Health- Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Foot Note Protection of Ground water PSRG2 (mg/kg) Foot Note Phenylenediamine, p- 106-50-3 2.4E+03 N 2.4E+04 N Phenylphenol, 2- 90-43-7 2.5E+02 C 8.9E+02 C Phorate 298-02-2 2.4E+00 N 2.4E+01 N 1.3E-02 3 Phosgene 75-44-5 1.6E+03 6.6E-02 N 2.8E-01 N Phosmet 732-11-6 2.4E+02 N 2.4E+03 N Phosphine 7803-51-2 4.6E+00 N 6.2E+01 N Phosphoric Acid 7664-38-2 1.0E+05 Max 1.0E+05 Max Phosphorus, White 7723-14-0 3.2E-01 N 4.0E+00 N Phthalic Acid, P- 100-21-0 1.2E+04 N 1.0E+05 Max Phthalic Anhydride 85-44-9 2.4E+04 N 1.0E+05 Max Picloram 1918-02-1 8.6E+02 N 8.6E+03 N Picramic Acid (2-Amino-4,6- dinitrophenol) 96-91-3 1.2E+00 N 1.2E+01 N 6.0E-03 4 Pirimiphos, Methyl 29232-93-7 1.2E+02 N 1.2E+03 N Polybrominated Biphenyls 59536-65-1 1.6E-02 C 5.7E-02 C Polychlorinated Biphenyls (PCBs) 1.0E+00 C 1.0E+00 C 7 1.4E-01 4 Polymeric Methylene Diphenyl Diisocyanate (PMDI) 9016-87-9 1.0E+05 N 1.0E+05 Max Polynuclear Aromatic Hydrocarbons (PAHs) 8 ~Acenaphthene 83-32-9 6.8E+02 N 6.6E+03 N 8.4E+00 3 Acenapthylene 208-96-8 NA NA 2.1E+01 3 ~Anthracene 120-12-7 3.4E+03 N 3.4E+04 N 6.6E+02 3 ~Benz[a]anthracene 56-55-3 1.5E-01 C,M 2.1E+00 C,M 1.8E-01 3 ~Benzo(j)fluoranthene 205-82-3 3.8E-01 C 1.3E+00 C ~Benzo[a]pyrene 50-32-8 1.5E-02 C,M 2.1E-01 C,M 5.9E-02 3 ~Benzo[b]fluoranthene 205-99-2 1.5E-01 C,M 2.1E+00 C,M 6.0E-01 3 ~Benzo[k]fluoranthene 207-08-9 1.5E+00 C,M 2.1E+01 C,M 5.9E+00 3 Benzo (g,h,i) perylene 191-24-2 7.8E+03 3 ~Chrysene 218-01-9 1.5E+01 C 2.1E+02 C 1.8E+01 3 ~Dibenz[a,h]anthracene 53-70-3 1.5E-02 C 2.1E-01 C 1.9E-01 3 ~Dibenzo(a,e)pyrene 192-65-4 3.8E-02 C 1.3E-01 C ~Dimethylbenz(a)anthracene, 7,12- 57-97-6 4.3E-04 C 6.2E-03 C ~Fluoranthene 206-44-0 4.6E+02 N 4.4E+03 N 3.3E+02 3 INACTIVE HAZARDOUS SITES BRANCH PRELIMINARY SOIL REMEDIATION GOALS (PSRG) TABLE (Updated First & Third Quarter of Calendar Year) JULY 2012 Both health-based and protection of groundwater remediation goals must be met. The protection of groundwater remediation goals listed on this table are only one alternative for achieving protection of groundwater criteria. Please refer to REC or State– lead Guidance documents for additional information on protection of groundwater remediation goals, procedures for adjusting preliminary remedial goals and other criteria that may affect remediation goals (e.g. ecological receptors, cross-media contamination). In addition, if sensitive environments are present, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Values revised since last edition are in bold. Page 18 of 24 Contaminant CAS No. Csat Preliminary Residential Health - Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Preliminary Industrial Health- Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Foot Note Protection of Ground water PSRG2 (mg/kg) Foot Note ~Fluorene 86-73-7 4.6E+02 N 4.4E+03 N 5.6E+01 3 ~Indeno[1,2,3-cd]pyrene 193-39-5 1.5E-01 C,M 2.1E+00 C,M 2.0E+00 3 ~Methylnaphthalene, 1- 90-12-0 3.9E+02 1.6E+01 C 5.3E+01 C 5.5E-02 4 ~Methylnaphthalene, 2- 91-57-6 3.7E+02 4.6E+01 N 3.7E+02 Csat 1.6E+00 3 ~Naphthalene 91-20-3 3.6E+00 C 1.8E+01 C 2.1E-01 3 ~Nitropyrene, 4- 57835-92-4 3.8E-01 C 1.3E+00 C Phenanthrene 85-01-08 6.8E+01 3 ~Pyrene 129-00-0 3.4E+02 N 3.4E+03 N 2.2E+02 3 Prochloraz 67747-09-5 3.2E+00 C 1.1E+01 C Profluralin 26399-36-0 7.4E+01 N 7.4E+02 N Prometon 1610-18-0 1.8E+02 N 1.8E+03 N Prometryn 7287-19-6 4.8E+01 N 5.0E+02 N Propachlor 1918-16-7 1.6E+02 N 1.6E+03 N Propanil 709-98-8 6.2E+01 N 6.2E+02 N Propargite 2312-35-8 2.4E+02 N 2.4E+03 N Propargyl Alcohol 107-19-7 2.4E+01 N 2.4E+02 N Propazine 139-40-2 2.4E+02 N 2.4E+03 N Propham 122-42-9 2.4E+02 N 2.4E+03 N Propiconazole 60207-90-1 1.6E+02 N 1.6E+03 N Propionaldehyde 123-38-6 3.3E+04 1.6E+01 N 6.8E+01 N Propyl benzene 103-65-1 2.6E+02 2.6E+02 Csat 2.6E+02 Csat 1.5E+00 3 Propylene 115-07-1 3.5E+02 3.5E+02 Csat 3.5E+02 Csat Propylene Glycol 57-55-6 1.0E+05 Max 1.0E+05 Max 5.6E+02 4 Propylene Glycol Dinitrate 6423-43-4 7.8E+04 N 1.0E+05 Max Propylene Glycol Monoethyl Ether 1569-02-4 8.6E+03 N 8.6E+04 N Propylene Glycol Monomethyl Ether 107-98-2 8.6E+03 N 8.6E+04 N Propylene Oxide 75-56-9 7.8E+04 2.0E+00 C 9.0E+00 C Pursuit 81335-77-5 3.0E+03 N 3.0E+04 N Pydrin 51630-58-1 3.0E+02 N 3.0E+03 N Pyridine 110-86-1 5.3E+05 1.6E+01 N 2.0E+02 N Quinalphos 13593-03-8 6.2E+00 N 6.2E+01 N Quinoline 91-22-5 1.6E-01 C 5.7E-01 C Refractory Ceramic Fibers NA 1.0E+05 Max 1.0E+05 Max Resmethrin 10453-86-8 3.6E+02 N 3.6E+03 N INACTIVE HAZARDOUS SITES BRANCH PRELIMINARY SOIL REMEDIATION GOALS (PSRG) TABLE (Updated First & Third Quarter of Calendar Year) JULY 2012 Both health-based and protection of groundwater remediation goals must be met. The protection of groundwater remediation goals listed on this table are only one alternative for achieving protection of groundwater criteria. Please refer to REC or State– lead Guidance documents for additional information on protection of groundwater remediation goals, procedures for adjusting preliminary remedial goals and other criteria that may affect remediation goals (e.g. ecological receptors, cross-media contamination). In addition, if sensitive environments are present, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Values revised since last edition are in bold. Page 19 of 24 Contaminant CAS No. Csat Preliminary Residential Health - Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Preliminary Industrial Health- Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Foot Note Protection of Ground water PSRG2 (mg/kg) Foot Note Ronnel 299-84-3 6.2E+02 N 6.2E+03 N Rotenone 83-79-4 4.8E+01 N 5.0E+02 N Safrole 94-59-7 5.2E-01 C,M 7.8E+00 C,M Savey 78587-05-0 3.0E+02 N 3.0E+03 N Selenious Acid 7783-00-8 7.8E+01 N 1.0E+03 N Selenium 7782-49-2 7.8E+01 N 1.0E+03 N 2.1E+00 3 Selenium Sulfide 7446-34-6 7.8E+01 N 1.0E+03 N Sethoxydim 74051-80-2 1.1E+03 N 1.1E+04 N Silica (crystalline, respirable) 7631-86-9 1.0E+05 Max 1.0E+05 Max Silver 7440-22-4 7.8E+01 N 1.0E+03 N 3.4E+00 3 Simazine 122-34-9 4.1E+00 C 1.4E+01 C 2.8E-02 3 Sodium Acifluorfen 62476-59-9 1.6E+02 N 1.6E+03 N Sodium Azide 26628-22-8 6.2E+01 N 8.2E+02 N Sodium Diethyldithiocarbamate 148-18-5 1.8E+00 C 6.4E+00 C Sodium Fluoride 7681-49-4 7.8E+02 N 1.0E+04 N Sodium Fluoroacetate 62-74-8 2.4E-01 N 2.4E+00 N Sodium Metavanadate 13718-26-8 1.6E+01 N 2.0E+02 N Stirofos (Tetrachlorovinphos) 961-11-5 2.0E+01 C 7.2E+01 C Strontium, Stable 7440-24-6 9.4E+03 N 1.0E+05 Max Strychnine 57-24-9 3.6E+00 N 3.6E+01 N Styrene 100-42-5 8.7E+02 8.7E+02 Csat 8.7E+02 Csat 9.2E-01 3 Sulfolane 126-33-0 1.2E+01 N 1.2E+02 N Sulfonylbis(4-chlorobenzene), 1,1'- 80-07-9 9.8E+00 N 9.8E+01 N Sulfuric Acid 7664-93-9 1.0E+05 Max 1.0E+05 Max Systhane 88671-89-0 3.0E+02 N 3.0E+03 N TCMTB 21564-17-0 3.6E+02 N 3.6E+03 N Tebuthiuron 34014-18-1 8.6E+02 N 8.6E+03 N Temephos 3383-96-8 2.4E+02 N 2.4E+03 N Terbacil 5902-51-2 1.6E+02 N 1.6E+03 N Terbufos 13071-79-9 3.0E-01 N 3.0E+00 N Terbutryn 886-50-0 1.2E+01 N 1.2E+02 N Tertiary Amyl Methyl Ether 994-05-08 Tetrabromodiphenyl ether, 2,2',4,4'- (BDE-47) 5436-43-1 1.2E+00 N 1.2E+01 N Tetrachlorobenzene, 1,2,4,5- 95-94-3 3.6E+00 N 3.6E+01 N 9.7E-02 4 INACTIVE HAZARDOUS SITES BRANCH PRELIMINARY SOIL REMEDIATION GOALS (PSRG) TABLE (Updated First & Third Quarter of Calendar Year) JULY 2012 Both health-based and protection of groundwater remediation goals must be met. The protection of groundwater remediation goals listed on this table are only one alternative for achieving protection of groundwater criteria. Please refer to REC or State– lead Guidance documents for additional information on protection of groundwater remediation goals, procedures for adjusting preliminary remedial goals and other criteria that may affect remediation goals (e.g. ecological receptors, cross-media contamination). In addition, if sensitive environments are present, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Values revised since last edition are in bold. Page 20 of 24 Contaminant CAS No. Csat Preliminary Residential Health - Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Preliminary Industrial Health- Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Foot Note Protection of Ground water PSRG2 (mg/kg) Foot Note Tetrachloroethane, 1,1,1,2- 630-20-6 6.8E+02 1.9E+00 C 9.3E+00 C 5.9E-03 4 Tetrachloroethane, 1,1,2,2- 79-34-5 1.9E+03 5.6E-01 C 2.8E+00 C 1.2E-03 3 Tetrachloroethylene 127-18-4 1.7E+02 1.7E+01 N 8.2+01 N 5.0E-03 3 Tetrachlorophenol, 2,3,4,6- 58-90-2 3.6E+02 N 3.6E+03 N 1.3E+01 3 Tetrachlorotoluene, p- alpha, alpha, alpha- 5216-25-1 2.4E-02 C 8.6E-02 C Tetraethyl Dithiopyrophosphate 3689-24-5 6.2E+00 N 6.2E+01 N Tetrafluoroethane, 1,1,1,2- 811-97-2 1.1E+03 1.1E+03 Csat 1.1E+03 Csat Tetrahydrofuran 109-99-9 1.7E+05 3.6E+03 N 1.9E+04 N Tetryl (Trinitrophenyl- methylnitramine) 479-45-8 4.8E+01 N 5.0E+02 N Thallium (Soluble Salts) 7440-28-0 1.6E-01 N 2.0E+00 N 2.8E-01 4 Thiobencarb 28249-77-6 1.2E+02 N 1.2E+03 N Thiodiglycol 111-48-8 1.1E+03 N 1.4E+04 N Thiofanox 39196-18-4 3.6E+00 N 3.6E+01 N Thiophanate, Methyl 23564-05-8 9.8E+02 N 9.8E+03 N Thiram 137-26-8 6.2E+01 N 6.2E+02 N Tin 7440-31-5 9.4E+03 N 1.0E+05 Max 1.0E+04 4 Titanium Tetrachloride 7550-45-0 2.8E+04 N 1.0E+05 Max Toluene 108-88-3 8.2E+02 8.2E+02 Csat 8.2E+02 Csat 5.5E+00 3 Toluene-2,5-diamine 95-70-5 1.2E+00 N 9.6E+00 C Toluidine, p- 106-49-0 2.6E+00 C 9.1E+00 C Toxaphene 8001-35-2 4.4E-01 C 1.6E+00 C 4.6E-02 3 Tralomethrin 66841-25-6 9.2E+01 N 9.2E+02 N Tri-n-butyltin 688-73-3 3.6E+00 N 3.6E+01 N Triallate 2303-17-5 1.6E+02 N 1.6E+03 N Triasulfuron 82097-50-5 1.2E+02 N 1.2E+03 N Tribromobenzene, 1,2,4- 615-54-3 6.2E+01 N 6.2E+02 N Tributyl Phosphate 126-73-8 5.4E+01 C 1.9E+02 C Tributyltin Compounds NA 3.6E+00 N 3.6E+01 N Tributyltin Oxide 56-35-9 3.6E+00 N 3.6E+01 N Trichloroacetic Acid 76-03-9 6.9E+00 C 2.5E+01 C Trichloro-1,2,2-trifluoroethane, 1,1,2- 76-13-1 9.1E+02 9.1E+02 Csat 9.1E+02 Csat 9.0E+03 3 Trichloroaniline HCl, 2,4,6- 33663-50-2 1.7E+01 C 5.9E+01 C Trichloroaniline, 2,4,6- 634-93-5 3.6E-01 N 3.6E+00 N INACTIVE HAZARDOUS SITES BRANCH PRELIMINARY SOIL REMEDIATION GOALS (PSRG) TABLE (Updated First & Third Quarter of Calendar Year) JULY 2012 Both health-based and protection of groundwater remediation goals must be met. The protection of groundwater remediation goals listed on this table are only one alternative for achieving protection of groundwater criteria. Please refer to REC or State– lead Guidance documents for additional information on protection of groundwater remediation goals, procedures for adjusting preliminary remedial goals and other criteria that may affect remediation goals (e.g. ecological receptors, cross-media contamination). In addition, if sensitive environments are present, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Values revised since last edition are in bold. Page 21 of 24 Contaminant CAS No. Csat Preliminary Residential Health - Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Preliminary Industrial Health- Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Foot Note Protection of Ground water PSRG2 (mg/kg) Foot Note Trichlorobenzene, 1,2,3- 87-61-6 1.5E+02 9.8E+00 N 9.8E+01 N Trichlorobenzene, 1,2,4- 120-82-1 4.0E+02 1.2E+01 N 5.4E+01 N 2.2E+00 3 Trichloroethane, 1,1,1- 71-55-6 6.4E+02 6.4E+02 Csat 6.4E+02 Csat 1.2E+00 3 Trichloroethane, 1,1,2- 79-00-5 2.2E+03 3.2E-01 N 1.4E+00 N 3.2E-03 4 Trichloroethylene 79-01-6 6.9E+02 8.8E-01 N,M 4.0E+00 N,M 1.8E-02 3 Trichlorofluoromethane 75-69-4 1.2E+03 1.6E+02 N 6.8E+02 N 2.4E+01 3 Trichlorophenol, 2,4,5- 95-95-4 1.2E+03 N 1.2E+04 N 2.5E+00 4 Trichlorophenol, 2,4,6- 88-06-2 1.2E+01 N 1.2E+02 N 1.6E-01 4 Trichlorophenoxyacetic Acid, 2,4,5- 93-76-5 1.2E+02 N 1.2E+03 N Trichlorophenoxypropionic acid, -2,4,5 93-72-1 9.8E+01 N 9.8E+02 N 3.8E-01 3 Trichloropropane, 1,1,2- 598-77-6 1.3E+03 7.8E+01 N 1.0E+03 N Trichloropropane, 1,2,3- 96-18-4 1.4E+03 5.0E-03 C,M 9.5E-02 C,M 3.2E-05 3 Trichloropropene, 1,2,3- 96-19-5 4.5E+02 1.6E-01 N 6.6E-01 N Tridiphane 58138-08-2 3.6E+01 N 3.6E+02 N Triethylamine 121-44-8 2.8E+04 2.4E+01 N 1.0E+02 N Trifluralin 1582-09-8 6.3E+01 C 2.2E+02 C Trimethyl Phosphate 512-56-1 2.4E+01 C 8.6E+01 C Trimethylbenzene, 1,2,3- 526-73-8 1.0E+05 Max 1.0E+05 Max Trimethylbenzene, 1,2,4- 95-63-6 2.2E+02 1.2E+01 N 5.2E+01 N 6.7E+00 3 Trimethylbenzene, 1,3,5- 108-67-8 1.8E+02 1.6E+02 N 1.8E+02 Csat 6.7E+00 3 Trinitrobenzene, 1,3,5- 99-35-4 4.4E+02 N 5.4E+03 N Trinitrotoluene, 2,4,6- 118-96-7 7.2E+00 N 7.9E+01 C Triphenylphosphine Oxide 791-28-6 2.4E+02 N 2.4E+03 N Tris(2-chloroethyl)phosphate 115-96-8 2.4E+01 C 8.6E+01 C Tris(2-ethylhexyl)phosphate 78-42-2 1.5E+02 C 5.4E+02 C Uranium (Soluble Salts) NA 4.6E+01 N 6.2E+02 N Urethane 51-79-6 1.2E-01 C,M 1.7E+00 C,M Vanadium Pentoxide 1314-62-1 1.3E+02 N 1.5E+03 N Vanadium and Compounds NA 7.8E+01 N 1.0E+03 N 6.0E+00 4 Vernolate 1929-77-7 1.2E+01 N 1.2E+02 N Vinclozolin 50471-44-8 3.0E+02 N 3.0E+03 N Vinyl Acetate 108-05-4 2.8E+03 1.9E+02 N 8.2E+02 N 3.7E-01 4 Vinyl Chloride 75-01-4 3.9E+03 6.0E-02 C,M 1.7E+00 C,M 1.9E-04 3 Warfarin 81-81-2 3.6E+00 N 3.6E+01 N INACTIVE HAZARDOUS SITES BRANCH PRELIMINARY SOIL REMEDIATION GOALS (PSRG) TABLE (Updated First & Third Quarter of Calendar Year) JULY 2012 Both health-based and protection of groundwater remediation goals must be met. The protection of groundwater remediation goals listed on this table are only one alternative for achieving protection of groundwater criteria. Please refer to REC or State– lead Guidance documents for additional information on protection of groundwater remediation goals, procedures for adjusting preliminary remedial goals and other criteria that may affect remediation goals (e.g. ecological receptors, cross-media contamination). In addition, if sensitive environments are present, the branch may require the adjustment of remediation goals and/or the proposed remedial alternative. Values revised since last edition are in bold. Page 22 of 24 Contaminant CAS No. Csat Preliminary Residential Health - Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Preliminary Industrial Health- Based Soil Remediation Goal1 (PSRG) (mg/kg) Basis9 Foot Note Protection of Ground water PSRG2 (mg/kg) Foot Note Xylene, P- 106-42-3 3.9E+02 1.2E+02 N 3.9E+02 Csat Xylene, m- 108-38-3 3.9E+02 1.2E+02 N 3.9E+02 Csat Xylene, o- 95-47-6 4.3E+02 1.4E+02 N 4.3E+02 Csat Xylenes 1330-20-7 2.6E+02 1.3E+02 N 2.6E+02 Csat 5.8E+00 3 Zinc Phosphide 1314-84-7 4.6E+00 N 6.2E+01 N Zinc and Compounds 7440-66-6 4.6E+03 N 6.2E+04 N 1.2E+03 3 Zineb 12122-67-7 6.2E+02 N 6.2E+03 N 1 - Preliminary health-based soil remediation goals (PSRGs) (adapted from the May 2012 USEPA Regional Screening Tables (RSL.) http://www.epa.gov/reg3hwmd/risk/human/rb-concentration_table/Generic_Tables/index.htm - The lower of the carcinogenic remediation goal at 1.0E-06 risk, the non-carcinogenic remediation goal at a hazard quotient of 0.2, the chemical specific soil saturation concentration (Csat), and the Ceiling Concentration – Max (100,000 mg/kg) is listed. - Industrial Remediation Goals can only be used with Branch approval and land use restrictions. Industrial PSRGs cannot be used for properties occupied or frequented by children. - Determine if a chemical has both carcinogenic and non-carcinogenic properties from the USEPA RSL Supporting Tables before adjusting, as prescribed in the guidance. 2 - Developed using a soil leachate model using default values appropriate for North Carolina (see pg. 18). For chemicals with no protection of groundwater remediation goal call the Branch or refer to the guidance. Protection of groundwater remediation goals can be developed using other methods described in Branch Guidance. 3 - Based on North Carolina 2L as target groundwater concentration. 4 - Based on North Carolina Interim 2L as target groundwater concentration. 5 - The preliminary remediation goals for dioxins and furans can also be calculated as a toxic equivalency concentration (TEQ) by using the toxicity equivalence factor (TEF) methodology. (See TEF table for dioxins and furans.) 6 - The SRG is based on USEPA guidance on lead cleanup levels. The value cannot be adjusted. 7 - The SRG is based on USEPA policy for cleanup of PCBs at Superfund Sites. The Branch is currently reviewing the PCB remediation goal policy and may issue further guidance at a later date. 8 - Remediation goals for carcinogenic PAHs can also be calculated as a toxic equivalency concentration (TEQ) by using the toxicity equivalence factor (TEF) methodology. (See TEF table for carcinogenic PAHs.) 9 - C - The PSRG is based on the carcinogenic endpoint and corresponds to an excess lifetime cancer risk of 1 in 1,000,000. N - The PSRG is based on the non-carcinogenic endpoint and corresponds to a hazard quotient of 0.2. M - Contaminant is a mutagen. Csat – Soil Saturation Concentration. Max – Ceiling Concentration (100,000 mg/kg). N/A- Not available. Page 23 of 24 INACTIVE HAZARDOUS SITES BRANCH Toxic Equivalent Factor Tables for Calculation of Soil Remediation Goals Toxic Equivalent Factor (TEF) Table for Dioxins and Furans CHEMICAL CASRN TEF* Dioxins and Furans 5 CDDs 2,3,7,8-TetraCDD 1 1,2,3,7,8-PentaCDD 1 1,2,3,4,7,8-HexaCDD 0.1 1,2,3,6,7,8-HexaCDD 0.1 1,2,3,7,8,9-HexaCDD 0.1 1,2,3,4,6,7,8-HeptaCDD 0.01 1,2,3,4,6,7,8,9-OctaCDD 0.0003 CDFs 2,3,7,8-TetraCDF 0.1 1,2,3,7,8-PentaCDF 0.03 2,3,4,7,8-PentaCDF 0.3 1,2,3,4,7,8-HexaCDF 0.1 1,2,3,6,7,8-HexaCDF 0.1 1,2,3,7,8,9-HexaCDF 0.1 2,3,4,6,7,8-HexaCDF 0.1 1,2,3,4,6,7,8-HeptaCDF 0.01 1,2,3,4,7,8,9-HeptaCDF 0.01 1,2,3,4,6,7,8,9-OctaCDF 0.0003 Toxic Equivalent Factor (TEF) Table for Carcinogenic Polyaromatic Hydrocarbons (PAHs) CHEMICAL CASRN TEF* Polynuclear aromatic hydrocarbons 8 Benzo[a]pyrene 50328 1.0 Benzo[b]fluoranthene 205992 0.1 Benzo[k]fluoranthene 207089 0.01 Benz[a]anthracene 56553 0.1 Chrysene 218019 0.001 Dibenz[a,h]anthracene 53703 1.0 Indeno(1,2,3-cd)pyrene 193395 0.1 *These toxic equivalent factors (TEF) are to be used as per footnotes 5 and 8 on the previous page. Page 24 of 24 Transport Model Used to Calculate Protection of Groundwater Remediation Goals1 dfP HkCC b aw sgwsoil )( Parameters Default Values Units C soil Calculated Source Concentration for soil not applicable mg/kg - soil Cgw Applicable Groundwater Target Concentration (NC GW Std) chemical-specific mg/L - water Df Dilution factor (see equation 2) 20 (0.5 acre source size)2 unitless Ks Soil-water partition coefficient for organic constituents ks = kocfoc for inorganic constituents ks = kd chemical-specific L/kg koc Soil organic carbon-water partition coefficient chemical-specific L/kg Foc Fraction of organic carbon in subsurface vadose soils 0.001 (0.1%) kg/kg Kd Soil-water partition coefficient for inorganics chemical-specific (pH=5.5) L/kg w Water-filled soil porosity-vadose soils 0.3 Lwater/Lsoil a Air-filled soil porosity-vadose soils 0.13 Lair/Lsoil Pb Dry bulk density 1.5 kg/L H' Henry's Law constant-dimensionless where: H' = Henry's Law constant (atm-m3/mole) x conversion factor of 41 chemical-specific unitless 1.From the USEPA 1996 Soil Screening Guidance 2.Default value from the USEPA 1996 Soil Screening Guidance