The URL can be used to link to this page

Environmental_Media_Management_Plan_dated_5-11-181^7 l Copy ENVIRONMENTAL MEDIA MANAGEMENT PLAN �;,. ,. MAR-VEL MARBLE REDEVLOPMENT 202 MAIN STREET R E S U B EDMONDS, SNOHOMISH COUNTY, WASHINGTON MAY 15 2018 ZGA Project No. 1811.23 BUILDING DEPP►RTME1 May 1 1; 2018 CITY C}F EDMONOsW Prepared for: Gregg Property Associates, LLC m Prepared by: ZipperGeo Geoprofessional Consultants ZipperGeo Ge©profession al Consultants May 11, 2018 Art 202, LLC 16550 76th Ave. W Edmonds, WA 98026 Attention: Mr. Robert Gregg, CCM Ms. Mary Olsen, Owner Subject: Environmental Media Management Plan Mar-Vel Marble Redevelopment 202 Main Street Edmonds, WA 98020 Snohomish County Tax Parcel No. 00454800101300 ZGA Project No. 1811.23 Dear Mr. Gregg and Ms. Olsen, Zipper Geo Associates, LLC (ZGA) is pleased to present this Environmental Media Management Plan (EMMP) for the Mar-Vel Marble Redevelopment Project. This plan was completed in general accordance with the scope and limitations set forth in our Work Plan and Cost Estimate (ZGA Proposal No. 17314, dated December 11, 2017). This document is intended to be utilized by the general contractor, earthwork subcontractor, shoring subcontractor, or other subcontractors that are expected to encounter environmentally -impaired soil and/or groundwater during construction as part of site redevelopment. This document provides a summary of our understanding of the project background, outlines compliance with applicable environmental laws and regulations, addresses existing monitoring well decommissioning prior to construction, outlines roles and responsibilities for managing impacted media, summarizes OSHA health and safety requirements of the contractor and subcontractors, outlines the methodology for environmental construction monitoring, and provides recommendations for re -use or off -site disposition of impacted media. 19019 36th Ave West, Suite E I Lynnwood, WA 98036 1 Phone: 425.582.9928 1 zippergeo.com ZippGeo Geopro#essional Consultants We look forward to meeting with you next week to discuss this Environmental Media Management Plan including any comments or questions you may have. We appreciate the opportunity to work with you on this project and look forward to assisting Art 202, LLC with implementation of this EMMP through environmental construction monitoring as described within the plan. Sincerely, Zipper Geo Associates, LLC Jeffrey S. Tinklepaugh, G.I.T. Staff Geologist Sean W. Donnan, P.G., L.E.G., L.Hg. Principal 19019 36th Ave West, Suite E I Lynnwood, WA 98036 1 Phone: 425.582.9928 1 zippergeo.com Table of Contents 1.0 SITE BACKGROUND...........................................................................................................................6 1.1 Location.........................................................................................................................................6 1.2 Site Characterization.....................................................................................................................6 1.3 Previous Reports...........................................................................................................................6 2.0 PROJECT UNDERSTANDING...............................................................................................................7 3.0 NATURE AND EXTENT OF RESIDUAL SITE IMPACTS..........................................................................7 3.1 Impacts to Soil...............................................................................................................................7 3.2 Impacts to Groundwater...............................................................................................................8 4.0 COMPLIANCE WITH APPLICABLE ENVIRONMENTAL LAWS AND REGULATIONS ..............................8 5.0 HEALTH AND SAFETY PLAN (HASP)...................................................................................................8 6.0 CONTRACTOR/SUBCONTRACTORS ENVIRONMENTAL QUALIFICATIONS.........................................9 7.0 CONTRACTORS USE OF HAZARDOUS MATERIALS.........................................................................10 8.0 WORKER HEALTH AND SAFETY TRAINING......................................................................................10 9.0 MONITORING WELL DECOMMISSIONING......................................................................................10 10.0 SOIL AND GROUNDWATER MANAGEMENT....................................................................................10 10.1 Roles and Responsibilities...........................................................................................................10 10.2 Excavation and Stockpiling.........................................................................................................11 10.3 Pre -Classification and Direct loading..........................................................................................12 10.4 Disposition of Excavation Spoils..................................................................................................12 10.5 Dewatering.................................................................................................................................13 10.6 Decontamination........................................................................................................................14 10.7 Environmental Equipment Calibration and Maintenance..........................................................14 10.8 Soil Sampling Methodology and Frequency of Testing..............................................................14 10.9 Sample Handling Procedures......................................................................................................15 10.10 Sample Documentation..........................................................................................................16 11.0 ANALYTICAL LABORATORY TESTING...............................................................................................17 12.0 ANALYTICAL QUALITY CONTROL PROCEDURES..............................................................................17 12.1 Qualifications of Analytical Laboratory.......................................................................................18 12.2 Laboratory Quality Control Procedures.......................................................................................18 12.3 Laboratory Quality Control Samples...........................................................................................18 13.0 RECORD KEEPING............................................................................................................................20 14.0 TRANSPORT OF IMPACTED MEDIA................................................................................................. 20 15.0 DOCUMENTATION AND REPORTING..............................................................................................20 16.0 STANDARD OF CARE.....................................................................................................................21 17.0 RELIANCE.........................................................................................................................................21 Attachments: Appendix A Acronyms and Definitions Appendix B Figures Appendix C Tables Appendix D Boring Logs Appendix E Test Pit Logs Appendix F Guidelines for Re -Use of Petroleum Contaminated Soils Mar-Vel Marble Redevelopment ZGA Project No. 1811.20 Environmental Media Management Plan May 11, 2018 1.0 SITE BACKGROUND ZipperGeo C,eopro[essiarkal curisuIlants 1.1 Location The project site is located at 202 Main Street in Edmonds, Washington. The site is assigned Snohomish County Tax Parcel No. 0045800101300. The site is bordered to the north by Main Street, to the west by 2nd Avenue South, to the east by an existing alley with commercial buildings further east, and to the south by an existing alley with a gravel parking lot further south. The site was previously developed with three conjoined commercial buildings that have since been demolished. The project site is listed on the Washington State Department of Ecology's (Ecology's) Confirmed and Suspected Contaminated Sites List (CSCSL) as Cleanup Site ID No. 1565 and Facility Site ID No. 34293635. 1.2 Site Characterization ZGA completed a Focused Subsurface Investigation, which included the advancement of nine hollow -stem auger borings (B-1/MW-1 through B-9/MW-9) and six test pits (TP-1A, TP-1B, TP-2A, TP-2B, TP-3, and TP- 4). Each of the nine borings were completed as dedicated groundwater monitoring wells. Based on test results on soil samples submitted for analytical laboratory testing and field screening completed during the subsurface investigation, petroleum contaminated soil (PCS) was encountered in the following explorations: B-2/MW-2; TP-1A; TP-1B; TP-2A; TP-2B; and TP-4. The above referenced Focused Subsurface Investigation should be referred to regarding general site soil and groundwater conditions and the analytical laboratory test results encountered at specific locations. During our Focused Subsurface Investigation, ZGA field -screened soil samples for indications of environmental impairment by chemicals of concern identified in our Phase I Environmental Site Assessment (ZGA Project No. 1811.21, dated May 19, 2017). Additionally, ZGA collected soil and groundwater samples for laboratory analysis. Chemicals of concern identified during pre -construction site characterization are discussed in Section 3.0. ZGA's Technical Memorandum - Mar-Vel Marble Redevelopment - Estimated Volume of Petroleum Contaminated Soil Subject to Unique Handling and Off - Site Disposition - 202 Main Street - Edmonds, Washington - ZGA Project No. 1811.22 dated May 8, 2018 should be reviewed in parallel with this EMMP. 1.3 Previous Reports This EMMP is intended to be used only in conjunction with the following ZGA-produced documents: • Phase I Environmental Site Assessment - Mar-Vel Marble Redevelopment - 202 Main Street - Edmonds, Snohomish County, Washington - ZGA Project No. 1811.21 dated May 19, 2017; • Focused Subsurface Investigation - Mar-Vel Marble Redevelopment - 202 Main Street - Edmonds, Snohomish County, Washington - Snohomish County Tax Parcel No. 00454800101300 - ZGA Project No. 1811.22 dated November 16, 2017; and, 11 Mar-Vel Marble Redevelopment % j ppe �rG pO ZGA Project No. 1811.20 L M .. I L GCt}proiessiailal Consultants Environmental Media Management Plan May 11, 2018 ■ Technical Memorandum - Mar-Vel Marble Redevelopment - Estimated Volume of Petroleum Contaminated Soil Subject to Unique Handling and Off -Site Disposition - 202 Main Street - Edmonds, Washington - ZGA Project No. 1811.22 dated May 11, 2018. 2.0 PROJECT UNDERSTANDING Preliminary civil plans and discussions with CG Engineering, indicate that the below grade parking level and access ramp will be located below the central and western portion of the building with parking level finished floor elevations ranging from about 31 to 32.3 feet. These parking level finished floor elevations are up to 8 feet below existing grade and we anticipate that excavations for foundation elements may extend about 2 feet deeper for anticipated construction excavation depths of up to 10 feet. The eastern 25 feet of the building will be slab -on -grade with a finished floor elevation of about 42 feet. Stormwater facilities will be located below the slab -on -grade floor in the eastern portion of the building. The planned stormwater facilities include a 5-foot diameter stormwater detention pipe with an invert elevation of about 35 feet and a catch basin with a bottom of footing elevation of about 31 feet. The stormwater detention conduit invert elevation and catch basin bottom of footing elevations are about 6 and 10 feet below existing ground surface, respectively. We anticipate that excavations during construction may extend up to 2 feet below these stormwater features for anticipated construction excavation depths of 8 to 12 feet. We understand that removal of the offsite closed -in -place underground storage tank, located in the 2nd Avenue South right-of-way, is not included in the current development plan. Preliminary shoring plans indicate that 2-foot diameter soldier pile drilled shafts will be advanced along the northeast, northwest, and southwest perimeter of the site with pile tip elevations ranging from 13 to 17 feet. Preliminary shoring plans also indicate that shoring will not extend all the way into the north corner of the Property. The plans indicate that the soldier pile wall will chamfer the northwest corner of the property. 3.0 NATURE AND EXTENT OF RESIDUAL SITE IMPACTS The following sections describe the residual impacts to soil and groundwater at the site. This plan also takes into consideration and serves as a general guidance document regarding earthwork phases of construction that are influenced by impacted media documented to be present on site. 3.1 Impacts to Soil The compounds of concern (COCs) detected in soil at the site include: Total Petroleum Hydrocarbon (TPH) in the gasoline range (TPH-G); TPH in the diesel range (TPH-D); TPH in the oil range (TPH-0); benzene; toluene; ethylbenzene; and total xylenes. For additional discussion on ZGA soil characterization efforts, please refer to the following ZGA-produced document, referenced in Section 1.3: Focused Subsurface Investigation - Mar-Vel Marble Redevelopment 7 Mar-Vel Marble Redevelopment ZipperGeo ZGA Project No. 1811.20 Geppsufessianal Ccansuftanis Environmental Media Management Plan May 11, 2018 - 202 Main Street - Edmonds, Snohomish County, Washington - Snohomish County Tax Parcel No. 00454800101300 - ZGA Project No. 1811.22 dated November 17, 2017. 3.2 Impacts to Groundwater The COCs detected in groundwater at the site include: TPH-G; and select volatile organic compounds (VOCs) including acetone, benzene, sec -butyl benzene, chloroform, 1,2-dichloroethane, isopropyl benzene, trichloroethene (TCE), and tetrachloroethene (PCE). Based on a review of preliminary civil plans and discussions with CG Engineering, we do not anticipate that site redevelopment will encounter significant groundwater excluding some perched groundwater within planned cut depths and possibly during vertical shoring element installation. If groundwater is encountered during site -redevelopment the contractor should take appropriate measures as outlined in Section 10 of this EMMP. 4.0 COMPLIANCE WITH APPLICABLE ENVIRONMENTAL LAWS AND REGULATIONS All Contractors working at the site shall at all times comply with all applicable environmental laws. Management and handling of petroleum impacted media shall be conducted in accordance with Chapter 70.105D RCW and its implementing regulations, the Model Toxics Control Act (MTCA), Chapter 173-340 WAC; Chapter 173-303 WAC, the Dangerous Waste Regulations; and Guidance for Remediation of Petroleum Contaminated Soils, Toxics Cleanup Program, Publication No. 10-09-057, dated September 2011. The contractor is required to prepare and adhere to a Site -Specific Health and Safety Plan as described below. Applicable cleanup levels under MTCA can be developed using either Method A tabulated values or using Method B and Method C risk -based formulations. Method A and Method B cleanup levels allow for unrestricted land use, including residential use. For the purposes of regulatory compliance for the site during and after construction, analytical results will be compared to MTCA Method A cleanup levels. For the purposes of this EMMP, petroleum impacts to soil and/or groundwater below MTCA cleanup levels but above minimum laboratory reporting limits (e.g. Class II soils as defined by Ecology) will require special handling and disposition. 5.0 HEALTH AND SAFETY PLAN (HASP) The General Contractor will need to prepare a site -specific Health and Safety Plan (HASP) to satisfy the requirements as set forth in 29 CFR 1910.120 and Chapter 296-843 WAC intended to ensure safe work practices. This HASP shall also apply to all subcontractors during excavation and shoring when working within petroleum impacted soils and/or petroleum and chlorinated solvent -impacted groundwater documented to exist on site. The HASP should conform to 29 CFR 1910.120 and be prepared by a Certified Industrial Hygienist (CIH). Mar-Vel Marble Redevelopment Z pp rGeo ZGA Project No. 1811.20 Gooplofesslonal Consul'an's Environmental Media Management Plan May 11, 2018 The HASP will identify the minimum requirements for personal protective equipment (PPE) for all onsite contractor employees. The contractor -specific HASP will be provided to the owner in advance of mobilization for earthwork phases of construction for review and comment. The Contractor's site -specific HASP will provide and maintain effective safeguards for worker health and safety when subsurface work is conducted where contaminated soil and/or groundwater has come known to exist. The plan shall conform to the requirements established under the Code of Federal Regulations 29 CFR 1910.120, including the use of appropriately trained site workers, monitoring and identification of impacted media, site health and safety officer's authorities and responsibilities, and health and safety briefings for applicable site personnel. The HASP will require workers involved in subsurface work to use a minimum level of personal protective equipment (PPE) such as protective clothing, resistant gloves and boots, hardhats, safety glasses, hearing protection, etc., that are consistent with protection against the chemicals of concern within the impacted areas and waste streams at the site. The HASP will also define appropriate protocols for air monitoring, action level upgrades (e.g., Modified Level D or Level D to Level C, etc.), and worker decontamination, and will augment the Contractor's safety procedures and/or HASP for normal subsurface work. The primary hazards at the site are soil and potentially groundwater impacted by TPH and select VOCs as outlined in Section 4. Upon excavation, potential exposure pathways would include inhalation, ingestion, and dermal contact with impacted soil and/or groundwater. During subsurface work, the impacted area will be secured by the Contractor to limit access until the potential hazards from the aforementioned exposure pathways have been evaluated and mitigated and impacted media have been removed. Appropriate worker hygiene should be addressed in the Contractors HASP, so individuals will not inadvertently ingest, or inhale impacted soil particles adhering to gloves or clothing or come into contact with or ingest impacted groundwater. ZGA will prepare a HASP in accordance with the requirements of 29 CFR 1910.120 and Chapter 296-843 WAC, which will only apply to representatives of ZGA who are on site monitoring earthwork activities where petroleum and/or chlorinated solvent impacted media are concerned. 6.0 CONTRACTOR/SUBCONTRACTORS ENVIRONMENTAL QUALIFICATIONS The Contractor shall make available for their completion of earthwork phases of construction an appropriate number of employees who satisfy the requirements as set forth in the contractor -specific Health and Safety Plan. In particular, a select number of the Contractors' work force will be responsible for providing documentation of current 24 or 40-hour OSHA training (including annual 8-hour refresher course) in accordance with 29 CFR 1910.120. W Mar-Vel Marble Redevelopment Z ppe rr po ZGA Project No. 1811.20 r,,J Gerrpr ofewssionalunal Conw I to rjts Environmental Media Management Plan May 11, 2018 Subcontracting of work does not relieve the Contractor of any of its obligations, including obligation to comply with all applicable Federal, State, and local environmental health and safety rules, regulations, and laws and to require such compliance from all subcontractors. 7.0 CONTRACTORS USE OF HAZARDOUS MATERIALS The Contractor shall at all times properly handle, store, use, and dispose of any hazardous materials, if any, brought on to the work site in accordance with all applicable environmental laws. In the event of a spill or release of any hazardous material brought on to the work site, the procedures as set forth in the Contractor's Health and Safety Plan (HASP) or other management plan including the Stormwater Pollution Prevention Plan (SWPPP) prepared for the project concerning hazardous materials shall be followed. 8.0 WORKER HEALTH AND SAFETY TRAINING Washington OSHA is codified in Chapter 296-843 WAC. According to 29 CFR 1910.120(e), workers that could be potentially exposed to hazardous substances, health hazards, or safety hazards and their supervisors and management responsible for the site work shall receive either 24 or 40-hour HAZWOPER training under a qualified vendor. The Contractor's workers engaged in subsurface excavation or other activities, which may be cause the worker to be exposed to the COCs outlined in Section 3, shall receive a minimum of 40 hours of HAZWOPER instruction. Workers who work at the site only occasionally for a specific task such as surveying, etc., and who are unlikely to be exposed over permissible exposure limits shall receive a minimum of 24 hours OSHA Health and Safety instruction. 9.0 MONITORING WELL DECOMMISSIONING Monitoring well decommissioning will be completed by ZGA prior to Earthwork Contractor mobilization. The decommissioning will be completed and documented by a Washington State licensed Resource Protection Well driller in accordance with Chapter 173-160 WAC; Minimum Standards for Construction and Maintenance of Wells. Documentation of decommissioning and confirmation from the Washington State Department of Ecology (Ecology) will be provided to the owner. 10.0 SOIL AND GROUNDWATER MANAGEMENT 10.1 Roles and Responsibilities ZGA will be retained on a full-time basis to observe and document the contractor during excavation in known or suspected petroleum impacted areas of the site. ZGA will monitor earthwork activities including excavation, dewatering operations if occurring, utility excavations as appropriate, and general earthwork phases of construction. ZGA, will be responsible for collecting soil and/or groundwater samples from soil stockpiles or excavations. The Contractor will be responsible for coordinating with ZGA. The owner, and owner's representative shall secure the necessary permits for disposal of petroleum impacted excavation spoils, groundwater, and the 10 Mar-Vel Marble Redevelopment '% j �yr�� err po ZGA Project No. 1811.20 L.1 �.1 i lJ 1. GeoprofesSt4Kiill Consultants Environmental Media Management Plan May 11, 2018 appropriate handling and management of dewatering while following the requirements of this EMMP and all other applicable local, state, and federal rules and regulations. The contractor will be responsible for the installation of the shoring system to allow for excavation to the proposed depths. Excavation of petroleum contaminated soils will occur simultaneously with mass excavation of the site. The contractor will be responsible for excavation of both non -impacted as well as inferred -petroleum impacted soils under the guidance of the owner and ZGA. The General Contractor will be responsible for the design, execution, and management of stormwater Best Management Practices (BMPs), erosion control measures, and discharge requirements in accordance with all applicable rules and regulations and as defined in the SWPPP prepared by others for the project. The General Contractor is also responsible for collection and analysis of stormwater samples to ensure compliance with the SWPPP. We understand that a Certified Erosion and Sediment Control Lead (CESCL) will be retained for the project. ZGA's presence on site does not preclude the Contractor from responsibility for understanding and executing the requirements of this EMMP or compliance with all applicable Federal, State, and Local rules and regulations including those pertaining to compliance with the stormwater general permit for the project. 10.2 Excavation and Stockpiling During excavation phases of construction or cleanup, ZGA will be onsite to observe, and document handling and management of petroleum impacted soils in accordance with this EMMP. ZGA will provide guidance regarding the segregation, stockpiling, and export of excavation spoils during earthwork phases of construction. Excavated soil where confirmed to be impacted in advance by analytical laboratory test results may be direct loaded for offsite disposition. In the absence of laboratory testing, excavated soil should be temporarily stockpiled on site and covered with a layer of plastic sheeting of at least 6-mil thickness. If stockpiles are used, the plastic sheeting shall be anchored as necessary around both the perimeter and atop the stockpile using appropriate measures which may include, but are not limited to jute netting, sand bags, or other measures. The stockpile locations will be predetermined by the General Contractor and the client and based upon temporal site logistics. Unique stockpiles will be segregated into temporary management areas where soil in stockpiles can remain separated from one another and identified and tracked until the appropriate end - use is determined, and re -use on -site or off -site disposition occurs. 11 Mar-Vel Marble Redevelopment ZipperGeo ZGA Project No. 1811.20 CV Graprc)fessionaE Cpnsu Ica nc s Environmental Media Management Plan May 11, 2018 Typical construction practices for security and fencing should be followed. Additionally, petroleum impacted soil being stored prior to final determination or disposal should be properly secured and/or fenced to prevent unauthorized access or contact. For example, temporary stockpiles of impacted soil should be placed on and completely covered with plastic sheeting and bermed appropriately to prevent runoff. Appropriate signage to discourage trespassing should be posted. If stockpiles are used, ZGA will endeavor to provide test results of stockpiled materials within an expedited 36-hour time frame after the stockpile is created and sampled. Contractor will notify the owner in instances where more expedited test results are needed (24-hour turnaround from the time samples are collected and submitted to the analytical testing facility) and the owner will facilitate on a case by case basis. ZGA will be actively collecting discrete soil samples during the excavation to characterize excavation spoils and stockpiled materials. ZGA will also collect samples from the sidewalls and/or base of excavations as earthwork progresses. In the event that the discrete samples collected do not meet the sample frequency protocol as described below, additional discrete or composite samples will be collected from the stockpile(s) based on an estimate of volume to be accumulated. Samples will be submitted to a Washington -state accredited analytical laboratory as described herein. 10.3 Pre -Classification and Direct loading Direct loading of soils is the preferred method of removing petroleum impacted soils for off -site disposition from a construction schedule perspective. In order to facilitate direct loading of soils, the Contractor and ZGA must establish a pre -classification process which will identify petroleum impacted soils before excavation begins. The Contractor will provide ZGA with a schematic drawing indicating the start of excavation and the sequence of the excavation prior to mobilization. All samples will be submitted to a Washington -state accredited analytical laboratory by ZGA. Once laboratory results are received and reviewed, the need for unique handling and off -site disposition of the soils will be evaluated and communicated by ZGA to the General Contractor and the owner. 10.4 Disposition of Excavation Spoils All reasonable efforts will be undertaken by ZGA to classify soils into two categories based on the field observations and analytical results of sampling: Category 1 Soils; and, Category 2, 3, and 4 Soils in accordance with Washington State Department of Ecology Guidance for Remediation of Petroleum Contaminated Sites; Table 12.1 and Table 12.2; Publication No. 10-09-057, dated September 2011. Tables 12.1 and 12.2 are attached to this document in Appendix F. 12 Mar-Vel Marble Redevelopment ZGA Project No. 1811.20 Environmental Media Management Plan May 11, 2018 Category 1 Solis ZipperGeo Gcoprofmional Consultants • Category 1: Soils classified as Category 1 soils, which do not contain detectable concentrations of petroleum constituents, will be disposed of by the Contractor at a facility that can accept such soils or re -used on site (subject to geotechnical suitability criteria). Category 2, 3, and 4 Soils • Category 2: Soils classified as Category 2 soils, which may contain residual concentrations of petroleum constituents below MTCA Method A cleanup levels, will be disposed of as Petroleum Contaminated Soil (PCs) or re -used on site (subject to geotechnical suitability criteria). • Category 3: Soils classified as Category 3 soils, which may contain residual concentrations of petroleum constituents at and/or below MTCA Method A cleanup levels, will be disposed of as PCs. • Category 4: Soils classified as Category 4 soils, which contain residual concentrations of petroleum constituents above MTCA Method A cleanup levels, will be disposed of as PCs. All Class 2, 3, and 4 soils subject to unique handling and off -site disposition will be disposed of at a facility licensed and permitted to receive and dispose of petroleum contaminated soils. Provided the owner and/or General Contractor effectively coordinate with ZGA, ZGA will profile the soils in advance with the selected end user of the impacted soil. ZGA will coordinate with the General Contractor, owner, and owner's representative to obtain a bill of lading to document transportation and disposal of petroleum impacted soils slated for off -site disposition. The owner or owner's representative will be responsible for signing the waste profile application as the generator. 10.5 Dewatering It is our understanding that significant volumes of groundwater will be encountered during excavation phases of construction at the site. As a result, dewatering of excavations is not expected to be necessary. However, perched groundwater may be present within the planned cut elevations and could seep into the excavations. Based on groundwater analytical results, if groundwater is encountered, there is the potential for said groundwater to be impacted by petroleum products or select VOCs. The General Contractor will obtain necessary permits for the storage, treatment, and disposal of dewatering collected and stored at the site during construction. The Contractor shall manage, treat, and transport the petroleum impacted groundwater in accordance with the requirements of the applicable environmental regulations and the stormwater general permit. We understand that a Certified Erosion and Sediment Control Lead (CESCL) will be retained for the project and that the CESCL will be responsible for any sampling of groundwater from holding tanks or at discharge locations in accordance with any pretreatment requirements of the general stormwater permit. 13 Mar-Vel Marble Redevelopment ZGA Project No. 1811.20 Environmental Media Management Plan May 11, 2018 10.6 Decontamination ZipperGeo Geuprolessionat Consultants The Contractor shall decontaminate equipment that has come into contact with environmentally - impacted soil by scraping soil off of equipment with a shovel if possible, or by scrub washing or high pressure washing as necessary (supplied by the Contractor). 10.7 Environmental Equipment Calibration and Maintenance ZGA will be responsible for calibration and maintenance of field equipment used by ZGA during earthwork prior to use in the field as appropriate. The calibration procedures will follow standard manufacturers' instructions and/or ZGA's calibration/service specifications to ensure that the equipment is functioning within tolerances established by the manufacturers and required for the tests. A record of field calibration checks will be maintained by ZGA's field personnel on the field logs. All instruments will be stored, transported, and handled with care to preserve equipment accuracy. Damaged instruments will be taken out of service immediately and withheld from use until they can be repaired and recalibrated by a qualified technician. 10.8 Soil Sampling Methodology and Frequency of Testing ZGA will complete soil sampling of excavation spoils, stockpiles, and excavations as described in this EMMP and this section. Based on the analytical results from the Focused Subsurface Investigation completed by ZGA, excavation spoils removed from the site will be subject to unique handling, segregation, stockpiling, sampling, and disposition, as appropriate. Sampling of confirmed or suspected impacted soils will be conducted in accordance with Ecology requirements presented in Guidance for Remediation of Petroleum Contaminated Soils, Toxics Cleanup Program, Publication No. 10-09-057, dated September 2011. The following frequencies will apply for samples collected from stockpiles and/or during excavation and generation of excavation spoils. 14 Mar-Vel Marble Redevelopment ZGA Project No. 1811.20 Environmental Media Management Plan May 11, 2018 10.9 Sample Handling Procedures ZipperGeo Geuprofessional Consultants ZGA is responsible for sample handling procedures. The following subsections provide details regarding the sample handling procedures that will be followed forthis investigation. These include sample labeling, packaging, and shipping procedures. Labeling - Sample labels are necessary to prevent misidentification of samples. Sample labels will be filled out in indelible black or blue ink and affixed to sample containers at the time of sample collection. Each sample container will be labeled with the following, at a minimum: • Consulting firm name • Project No. • Sample identification number • Sample collection date (month/day/year) • Time of collection • Sampler's initials • Analyses required Preservative (if any) Packaging and Shipping - Immediately after sample labeling, sample containers will be placed in a cooler on ice during transportation to the laboratory. All glass sample containers will be protected with bubble wrap if transported by a commercial carrier. The temperature of the cooler will be recorded by the laboratory on the Chain of Custody (COC) record immediately upon receipt of the samples at the laboratory. The temperature of samples will be maintained at between 2° and 6° C in the cooler during transport. 15 Mar-Vel Marble Redevelopment ZipperGeo ZGA Project No. 1811.20 Gec�professianaE Consultants Environmental Media Management Plan May 11, 2018 Sample cooler drain spouts will be taped from the inside and outside of the cooler to prevent any leakage. Samples transported by a laboratory -assigned courier will be packed in a sample cooler with sufficient ice to keep the samples chilled. 10.10 Sample Documentation ZGA is responsible for Sample Documentation. The following subsections provide details regarding the sample documentation procedures that will be followed for this investigation. These include preparation of Chain of Custody Forms and documentation of field notes. Chain of Custody (COC) - To establish the documentation necessary to trace sample possession from the time of collection through analysis and disposal, a COC record will be completely filled out and will accompany every sample. Samples will be delivered to the laboratory for analysis as soon as practical. A COC record will accompany all samples. At a minimum, the following items will be recorded on the COC record: ■ Consulting firm name • Project name • Project location/Site ID • Project number • Sample ID • Sampler name • Date (of sample collection) • Time (of sample collection to the nearest minute, 24-hour clock) ■ Sample type (matrix) • Number of sample containers • Analyses required • Comments ■ Observations specific to sample • The sampler will be the first person to relinquish sample possession • Courier/laboratory representative signature ■ Date/time (of custody transfer) Field Logbooks/Notebooks - In order to maintain the integrity and traceability of samples, all information pertinent to field sampling will be recorded in a field logbook or field notebook. All samples will be properly labeled and packaged prior to being transported to the laboratory and will be accompanied by completed COC documentation. All documentation will be recorded in the field logbook or notebook in indelible black or blue ink. At a minimum, the logbook will contain the following information: • Project name and site location • Date and time • Personnel in attendance 16 Mar-Vel Marble Redevelopment ZGA Project No. 1811.20 Environmental Media Management Plan May 11, 2018 General weather information • Work performed • Field observations Z pperGeo Genproressionel Consult a ri is • Sampling performed, including specifics such as location, type of sample, type of analyses, and sample identification • Field analyses performed, including results, instrument checks, problems, and calibration records for field instruments • Descriptions of deviations from this Work Plan • Problems encountered, and corrective action taken • Identification of field QC samples • QC activities • Verbal or written instructions • Any other events that may affect the samples 11.0 ANALYTICAL LABORATORY TESTING ZGA is responsible to ensure that all soil samples collected are submitted to a Washington -state accredited laboratory under strict chain -of -custody procedures. Samples will be analyzed for the following suite of analyses during mass excavation of the site: Northwest Portion of Propert • Gasoline -range total petroleum hydrocarbons (TPH) using Northwest Method NWTPH-Gx; • Benzene, Toluene, Ethylbenzene, and Xylenes (BTEX), Hexane, Methyl Tertiary Butyl Ether (MTBE), 1,2 Dichloroethane (EDC), 1,2 Dibromoethane (EDB), and Naphthalene by EPA Method 8260C. • Additional analytical test procedures as required by the end use disposal facility. • Additional analytical procedures only as necessary including Washington State TPH Policy Method Volatile Petroleum Hydrocarbons (VPH) to potentially establish alternative cleanup standards for the property. Southeast and South -Central Portion of the Property_ • Diesel- and oil -range total petroleum hydrocarbons (TPH) using Northwest Method NWTPH-Dx; • Additional analytical test procedures as required by the end use disposal facility. • Additional analytical procedures only as necessary including Washington State TPH Policy Method Extractable Petroleum Hydrocarbons (EPH) to potentially establish alternative cleanup standards for the property. 12.0 ANALYTICAL QUALITY CONTROL PROCEDURES ZGA and subcontract analytical laboratories are responsible for implementing the requirements of this section. This section describes laboratory qualification, sample custody and documentation, 17 Mar-Vel Marble Redevelopment Z i ppe rG eo ZGA Project No. 1811.20 Geyprofessianai Consultants Environmental Media Management Plan May 11, 2018 QC procedures, QC samples, preventative maintenance, data review, and deliverables for the collection of samples for chemical analysis. 12.1 Qualifications of Analytical Laboratory The analytical laboratory selected to analyze samples for this project will be certified by the Washington State Department of Ecology and through the National Environmental Laboratory Accreditation Program (NELAP) for all of the analytical methods required for the project. The selected laboratory for the project will be capable of providing the required turnaround times, project QC, and data deliverables required by this EMMP. 12.2 Laboratory Quality Control Procedures The analytical laboratory will have written standard operating procedures (SOPS) defining the instrumentation, instrumentation maintenance, tuning, calibration, method detection and RLs, QC requirements, blank requirements, and step-by-step procedures for each analytical method. The SOPS must be available to the analysts performing the work. The SOPS must meet or exceed the requirements of the analytical methods cited in this Work Plan. The laboratory must maintain logs of all activities that have an impact on the quality of the laboratory results. Any portion of the method that is subcontracted by the laboratory to another laboratory or sent to another facility of the same network of laboratories must have the prior approval of ZGA. The laboratory must maintain the instruments in working condition required by the methods specified for the analyses. Sufficient redundancy in equipment must be available in the laboratory to handle downtime situations. Method substitution because of instrumental failure will not be permitted without written approval from ZGA. 12.3 Laboratory Quality Control Samples The following subsections outline the laboratory QC samples required by this project. Calibration - All instruments and equipment must be calibrated in accordance with the specified methods, unless different instructions are included in this document. Each instrument must be calibrated with the standard solutions appropriate to the type of instrument and the calibration range established for the method. Initial calibrations (ICALs) should be performed when the method is first used and again whenever the continuing calibrations fail to meet their respective acceptance criteria. In addition, if the instrument undergoes significant maintenance, the ICAL must be repeated. Continuing calibrations verify that the instrument performance has remained within the limits set at the time of the ICAL. The frequency of continuing calibrations is specified in referenced methods. V! Mar-Vel Marble Redevelopment Z i p pe 1 u l� o ZGA Project No. 1811.20 1 l� i;ruprofessianal Consultants Environmental Media Management Plan May 11, 2018 Instrument/Calibration Blanks - Instrument blanks are run to ensure that analytes from previous runs have been purged out of the system and do not contaminate succeeding runs. Instrument blanks must be run following calibration runs, before sample analyses are performed, and after samples containing high concentrations of potentially interfering materials are found. Target analytes must not appear in the instrument blanks at concentrations greater than half the required RLs. If the laboratory consistently observes contaminants in the instrument blanks, the laboratory must investigate the source of the contamination and eliminate it, if possible. Method Blanks (MB) - Method blanks are prepared in the same manner as the samples, using the same reagents and glassware as for samples. The purpose of the method blank is to ensure that the equipment and reagents used in preparing the samples are free of contaminants that could interfere with the analysis. The method blank must be prepared and analyzed for each batch of 20 project samples or less per matrix (aqueous and solid) type. The method blank must not exhibit analytes at concentrations greater than half the required RLs. If contaminants are found that either contribute to the apparent concentration of a particular target analyte or interfere with the analysis, the analysis must be stopped, the source of contamination identified and corrected, and the analysis repeated. Contamination in the method blank above half the RLs will require that the entire associated batch of extracts or digestates be re -prepared and reanalyzed. Hence, it is very important to make sure that no such contamination is present. Laboratory Control Samples (LCS) - LCSs are pre -prepared and checked samples containing known concentrations of specific target analytes. LCSs can also be prepared by spiking known amounts of target analytes into a well -characterized blank matrix. The matrix must be analyte-free, laboratory reagent -grade water for water samples and clean sand or equivalent for soil samples. The LCS is prepared and run at a frequency of one per 20 project samples per matrix with the associated samples, using the same reagents and volumes. If insufficient quantity of sample is available for MS/MSD, the LCS will be prepared and analyzed in duplicates (LCSD). All analytes in the LCS must meet recovery criteria. If the criteria are not met, the entire batch of samples must be reprepared, together with a new LCS, and reanalyzed. Matrix Spike and Matrix Spike Duplicate (MS/MSD) - The MS/MSD serves to determine whether matrix effects are affecting recoveries. For inorganic analyses, only a single MS is performed per batch. A MS/MSD is prepared by spiking a known amount of solution to two portions of a sample being run in a batch. Once the spike is added to the MS/MSD samples, these samples are carried through the complete sample preparation process along with the other samples in the batch. The MS/MSD recoveries are compared against each other and against the known amount of the spike. 19 Mar-Vel Marble Redevelopment Z pp rui eo ZGA Project No. 1811.20 �1 6eeoprofessi0mrf Comultafits Environmental Media Management Plan May 11, 2018 From this data, both accuracy and precision can be determined. The laboratory will perform a MS/MSD at a frequency of one per 20 project samples per matrix. To prepare a project -specific MS/MSD, field personnel will collect additional sample volumes at a frequency of one per 20 samples. Field personnel will designate samples for MS/MSD analysis on the COC record. 13.0 RECORD KEEPING The Contractor shall provide complete documentation related to any off -site disposal of soil including but not limited to the following: waste profile submittals, waste manifests/waste bill(s) of lading, truck scale tickets and any other documentation provided to the Contractor by the permitted receiving facility. The Contractor is responsible for providing complete documentation of any and all off site disposition of soil. ZGA will maintain records of earthwork activities, soil stockpiling, sampling, and off -site disposal loading while present in the field. The Contractor shall provide complete documentation related to any on site re- use/re-positioning of soil including but not limited to strict horizontal and vertical (elevation) control prior to and after re -positioning of said soil from both borrow and placement areas of the site, and accurate quantity records of any soil subject to re-positioning/re-use on site. The Contractor will keep daily records of site safety briefings regarding work in suspected or confirmed contaminated media and prepare daily reports to document management of petroleum and/or chlorinated solvent -impacted impacted media. As required by the disposal facility, the General Contractor shall use a manifest or bill of lading for each off -site shipment of impacted media. The manifest or bill of lading shall include among other information, the date and time of shipment, the name of the transportation company, the name of the truck driver, the disposal site, and a brief description of the impacted media. 14.0 TRANSPORT OF IMPACTED MEDIA Transport and disposal of impacted media shall be the General Contractor's responsibility and shall comply with all applicable federal, state, or local laws, codes, and ordinances that govern or regulate petroleum impacted substance transportation and disposal. To the extent any media designating as dangerous or extremely hazardous waste per WAC 173-303 is determined to be present (not anticipated based on the data) additional transport recommendations will be recommended or required. 15.0 DOCUMENTATION AND REPORTING ZGA shall prepare daily field reports specific to the period of time they are on site in order to document all earthwork activities on the site as they pertain to this EMMP. DFRs shall be completed on site prior to leaving the site for the day. These DFRs will be distributed to the Contractor, and the owner if requested. Laboratory data as received will be distributed with the DFRs upon receipt. At the completion of earthwork phases of construction for the project, ZGA will prepare an Environmental Construction Monitoring (Remedial Action) Report documenting the field activities and methodologies. 20 Mar-Vel Marble Redevelopment Z pperGeo ZGA Project No. 1811.20 Grvpr ofess;anal Consultants Environmental Media Management Plan May 11, 2018 The report will summarize the monitoring well decommissioning, earthwork phases of site development activities, remedial measures undertaken to manage and address impacted media at the site, analytical laboratory results, final disposition of impacted soils, and residual soil and groundwater status. Copies of all permits, laboratory test certificates, soil recycling certificates, transportation manifest(s) and truck scale tickets will be included in the report. The report will incorporate all appropriate construction drawings and figures as necessary to reference the work performed relative to existing and future site features and will include specific locations from which all soil samples were collected. 16.0 STANDARD OF CARE This EMMP was prepared in a manner consistent with generally accepted practices of the profession undertaken and with regard to similar projects in a similar geographic area during a similar time period. It is intended to be used a guidance document, as no EMMP can wholly eliminate uncertainty regarding the presence of impacted media in connection with a property in recognition of reasonable limits of time, cost, and inferred risk. There are a number of unknown variables associated with construction projects with environmentally impaired media. This EMMP should therefore be considered a dynamic document, modification to which could be recommended by ZGA in response to the results of conditions encountered in the field. This EMMP is intended to be used only in conjunction with the above referenced documents and as otherwise limited herein. 17.0 RELIANCE This EMMP has been prepared for the exclusive use and reliance of Art 202, LLC. Use or reliance by any other party (except a government entity having jurisdiction over the site) is prohibited without written authorization from Gregg Property Associates, LLC and ZGA. 21 Mar-Vel Marble Redevelopment ZGA Project No. 1811.20 Environmental Media Management Plan May 11, 2018 APPENDIX A ACRONYMS AND DEFINITIONS ZipperGeo Geopru[ess;ona$ Consultants 22 Mar-Vel Marble Redevelopment ZGA Project No. 1811.20 Environmental Media Management Plan May 11, 2018 ZipperGeo Goerprofessional Consultants Bill of Lading The form used for identifying the quantity, composition, origin, routing, and destination of nonhazardous waste during its transportation from the point of generation to the point of disposal, treatment, or storage. A manifest is a similar form that may be used for hazardous wastes if encountered. Impacted Media Soil, water, or other solids or liquids with contamination levels above background levels (exceeding minimum laboratory reporting limits or "MRLs") as defined in Ecology's Guidance for Remediation of Petroleum Contaminated Soils, Toxics Cleanup Program, Publication No. 10-09-057, dated September 2011. As defined in the publication, impacted media includes all Category 2, Category 3, and Category 4 soils as summarized in Section 10.3. Impacted Media also includes soil and/or groundwater impacted with chlorinated solvents or other regulated compounds at concentrations exceeding the laboratory MRLs. CIH Certified Industrial Hygienist CFR Code of Federal Regulations CSCSL Confirmed and Suspected Contaminated Sites List CSID Cleanup Site ID COCs Contaminants of Concern Contractor Any entity conducting subsurface work within and Environmental Management Area including the general contractor and all subcontractors. EMMP Environmental Media Management Plan Environmental Consultant The entity providing third -party oversight and monitoring and documenting all excavation at the site including other subsurface invasive procedures which generate soil and/or groundwater at the surface. ZGA will also be responsible for evaluation and review of documentation of transport and disposal of the impacted media encountered. For the purposes of this EMMP, ZGA will act in the capacity of Environmental Consultant. 23 Mar-Vel Marble Redevelopment Zipp 'rGeo ZGA Project No. 1811.20 C �J Georr�oPeSsiUnal Consultants Environmental Media Management Plan May 11, 2018 Environmental Laws Any applicable statute, law, ordinance, order, consent decree, judgment, permit, license, code, covenant, deed, common law, treaty, convention, or other requirement pertaining to protection of the environment, worker health or safety, natural resources, conservation, wildlife, waste management or disposal, hazardous substances or pollution, including but not limited to regulation of releases to air, land, water, and groundwater. FSID Facility Site ID HASP Health and Safety Plan per 29 CFR 1910.120 Manifest The form used for identifying the quantity, composition, and the origin, routing, and destination of hazardous waste during its transportation from the point of generation to the point of disposal, treatment, or storage. A bill of lading is a similar form that may be used for nonhazardous wastes. MTCA The Model Toxics Control Act as defined by Chapter 173-340 of the Washington Administrative Code. OSHA Occupational Safety and Health Administration PCE Tetrachloroethene a.k.a., Perchloroethylene PCs Petroleum Contaminated Soil is defined as soil with contamination levels above background levels (exceeding minimum laboratory reporting limits) as defined in Ecology's Guidance for Remediation of Petroleum Contaminated Soils, Toxics Cleanup Program, Publication No. 10-09-057, dated September 2011. As defined in the publication, petroleum impacted media includes all Category 2, Category 3, and Category 4 soils as summarized in Section 10.3. PPE Personal Protective Equipment RCW Revised Code of Washington Release Please refer to the definition provided under WAC 173-340-200. TCE Trichloroethene 24 Mar-Vel Marble Redevelopment LI pperGeo ZGA Project No. 1811.20 GE!<aprnfessfonal Consultants Environmental Media Management Plan May 11, 2018 TPH Total Petroleum Hydrocarbons TPH-G Gasoline -range Total Petroleum Hydrocarbons TPH-D Diesel -range Total Petroleum Hydrocarbons TPH-O Oil -range Total Petroleum Hydrocarbons VOCs Volatile Organic Compounds WAC Washington Administrative Code ZGA Zipper Geo Associates 25 Mar-Vel Marble Redevelopment ZGA Project No. 1811.20 Environmental Media Management Plan May 11, 2018 APPENDIX B FIGURES ZpperGeo Geopr ofessional Consultants 26 PVC=35. ID SP—SC SD SD —so . ' 6- PVC--35, k K to T-1 3 C— 3. 20 6- PVC— 37.8383 � Vi 1 rri s - rr es+o�s�• +r t+4,s� IE (S)a• CG L.i�0.94� jF VICINITY OF FORMER —W ,a----- •-w— \—W.--_--_w W f,�ice PUMP ISLAND T—,—Q—pfp4�Ww--w w---W sw WIE 5y 3- P+Io- EO 3fi"\511 VICINITY OF CLOSED -IN -PLACE 'E • - RW.+39-1Y ` CONVEYANCE PIPING' : ;--_�••— —« AD IE (5 Ir CB T-I .- CBT-4 rI1RIM-.45,52 IE (SE) f PVC= 41.14 IE (SE) 12• P,VC= 42.04 • IE (NW) PVC= 39,89 IE (NW) 12- PVC- 42,00, MAIN I N LINEAR CRACK IN CONCRETE PARALLELING STRIKE OF DRIVEWAY ; .._, SLOPE '�u:Frao'S4"-sv. ,s.�s' '� �'�:' 1;s •, ., , •q�; 1 �7. - ' - — I RpaE e,.ftwaaa v r� ' i1 .- •: • kabl EiE•r:axtlJ� I I r .f: E--YJ�j J - ITP-4@7' TPdp@-E VICINITY OF 3,000 GALLON .NSid F FORMIER BELOW-GROUN6 ' CLOSED IN -PLACE LEADEDHYDRAULIC V HOISTI I GASOLINE UST I I TPlh,w_slaEf.�a' � I � I ii ! Lo IJ Tt'•1A.s CURB/SIDEWALK SEAM4 TP-1 A I TP-4 [ `` E3 16 15 14 I 13 10 � � � rt r• • .� : TP-26`N-Slde®8' I TP-2B I TP-2A TP-2A@6' 1 Iu 1 II I I' TP-2A@10' 1 TP-2A,W-Side@7' — — �TP-ZA,E-Side@T uj — Ij # v TP-3@3 112' EPOR I ED VICINITY 11 30. HOW I� EWAYN,�, INCLINE SWIM IA f+•Mt-35.90 12eP RVr. xz9 IS r>r --- as — -- moo -� OF FOR ER FLOOR DRAIN SUMP m TP-3 kat• i VICINITY OF'FORMER HEATING-OI I1 UST F �TP-213,S-Side@8' I Mr W 119.95 MEASUREMENT EXTENDS —TO UNEVEN ASPHALT CURB AT EDGE OF PARKING LOT HpA•0-W I✓ isy a PuC- 3.13 N 60'58'59° W 119.96' Ir r NIVI jr Ce T-1 ? REFERENCE: (1) TOPOGRAPHIC AND BOUNDARY SURVEY, PREPARED BY GEODIMENSIONS, DATED APRIL 11, 2016.(2) ZGA FIELD MEASUREMENTS _� te• � 1 r i I F(;FIUn r -1 TEST PIT ID AND APPROXIMATE L — LOCATION TP-1 VICINITY OF REC IDENTIFIED IN ZGA PHASE I ESA A SOIL SAMPLE ID AND I TP-2A,E-side@7' APPROXIMATE LOCATION 20 0 10 20 SCALE IN FEET MAR-VEL MARBLE REDEVELOPMENT 202 Main Street Edmonds, Washington ' SITE AND EXPLORATION PLAN: N aAM�EL TEST PITS DATE: MAY 2018 Job No. 1811.20 Zipper GeoAssociates , LLC FIGURE 19019 36th Ave. W.,Suite E Lynnwood, WA SHT.1 of 1 POWER POLE \ LEGEND VICINITY OF CLOSED -IN -PLACE , \ l'Q B-1/MW-1 EXPLORATION ID AND CONVEYANCE PUMPING p SQL VICINITY OF FORMER�/jr \ APPROXIMATE LOCATION « �4. 4 a - PUMP ISLAND /� VICINITY OF CLOSED -IN -PLACE I,t 3,000 GALLON GASOLINE UST ' / '.r l \ ° B-2/M W-2 4" F I R E' Q�P xad'' I B-7/MW-7 Qa �•rr_\ � i Cj a VICINITY OF FORMER Q, , a - / it i' I Qr BELOW -GROUND B-8/MW-8 � HYDRAULIC HOIST VICINITY OFF FORMER s� FLOOR DRAIN SUMP PROPOSED BUILDING a .t•. I i "I MAIN FFE = 42.0 \ 6• a 4/ b B- \ 6/MW- 6 B-4/MW-4 N VICINITY OF FORMER HEATING OIL UST B-5/MW-5 �9 a ; N -21 20 0 10 20 �® ''' .'•;r I 1 _� _ �r�0�}T ° I i B / M W-3 SCALE IN FEET B 1 /MW--1 a B-9/MW-9 x ;• I H ° w 4 ; MAR-VEL MARBLE REDEVELOPMENT 41.0 a 202 Main Street Edmonds, Washington SITE AND EXPLORATION PLAN: � I \ / I BORINGS/MONITORING WELLS DATE: MAY 2018 Job No. 1811.20 Id Zipper Geo Associates, LLC FIGURE ^ 19019 36th Ave. W.,Suite E L REFERENCE: (1) PRELIMINARY GRADING AND UTILITY PLAN, CG ENGINEERING, DATED 10.06.2016 (2) ZGA FIELD MEASUREMENTS Lynnwood, WA SHT.1of1 TP-1A NORTH SIDEWALL SAMPLE DEPTH (ft bgs) 'TPH-G (mg/kg) LEAD (mg/kg) B (mg/kg) T (mg/kg) E (mg/kg) X (mg/kg) 7 1,800 4.81 1 <002 1 2.6 1 15 1 23 TP-1A SOUTH SIDEWALL SAMPLE DEPTH (ft bgs) TPH-G (mg/kg) LEAD (mg/kg) B (mg/kg) T (mg/kg) E (mg/kg) X (mg/kg) 10 <2 2.08 <0.02 1 <0.02 <0.02 <0.06 TP-4 WEST SIDEWALL SAMPLE DEPTH (ft bgs) 'TPH-D (mg/kg) TPH-O (mg/kg) 8 <50 <250 TP-2A WEST SIDEWALL SAMPLE TPH-D (mg/kg) TPH-O (mg/kg) DEPTH (ft bgs) 7 <50 <250 TPAB EAST SIDEWALL SAMPLE DEPTH (ft bgs) TPH-G (mg/kg) LEAD (mg/kg) B (mg/kg) T (mg/kg) E (mg/kg) X (mg/kg) 10 <2 2.02 1 <0.02 <0.02 <0.02 1 <0.06 PROPERTY BOUNDARY I FT P-1 B l __ 3r— J �TP-4 I ' TP-21B M TP-2A� I CTP 3 I I TP-2B SOUTH SIDEWALL SAMPLE DEPTH (ft bgs) TPH-D (mg/kg) TPH-O (mg/kg) 8 <50 <250 TP-4 NORTH SIDEWALL SAMPLE DEPTH (ft bgs) TPH-D (mg/kg) 'TPH-C (mg/kg) 7 <50 <250 TP-4 EAST SIDEWALL SAMPLE DEPTH (ft bgs) TPH-D (mg/kg) 'TPH-O (mg/kg) 6 1 /2 <50 <250 TP-4 EXCAVATION FLOOR SAMPLE -TPH-D (mg/kg) 'TPH-O (mg/kg) DEPTH (ft bgs) 7 2,300 3,100 TP-2B NORTH SIDEWALL SAMPLE DEPTH (ft bgs) TPH-D (mg/kg) TPH-O (mg/kg) 8 <50 <250 TP-2A EAST SIDEWALL SAMPLE DEPTH (ft bgs) TPH-D (mg/kg) TPH-O (mg/kg) 7 <50 <250 TP-2A EXCAVATION FLOOR SAMPLE DEPTH (ft bgs) TPH-D (mg/kg) TPH-C (mg/kg0 B (mg/kg) T (mg/kg) E (mg/kg) X (mg/kg) VOCs (mg/kg 6 830 <250 <0.02 <0.02 <0.02 <0.06 <Varies 10 <50 <250 NA NA NA NA NA TP-3 EXCAVATION FLOOR SAMPLE TPH-G (mg/kg) 'TPH-D (mg/kg) TPH-O (mg/kg) LEAD (mg/kg) ARSENIC CADMIUM CHROMIUM MERCURY B (mg/kg) T (mg/kg) E (mg/kg) X (mg/kg) PAHs (mg/kg) PCBs (mg/kg) (DEPTH (ft bgs) (mg/kg) (mg/kg) (mg/kg) (mg/kg) 31/2 <2 150 <250 2.75 6.83 <1 16.0 11 <0.03 <0.05 <0.05 <0.15 <0.01 <0.02 LEGEND TPH-G: GASOLINE -RANGE TOTAL PETROLEUM HYDROCARBONS r 1 TEST PIT ID AND APPROXIMATE TPH-D: DIESEL -RANGE TOTAL PETROLEUM HYDROCARBONS L — LOCATION TPH-O: OIL -RANGE TOTAL PETROLEUM HYDROCARBONS B:BENZENE T: TOLUENE TIP-1 E: ETHYLBENZENE ® APPROXIMATE LOCATION OF X: XYLENES SOIL SAMPLE VOCs: OTHER VOCs BY EPA METHOD 8260C PAHS: POLYCYCLIC AROMATIC HYDROCARBONS PCB: POLYCHLORINATED BIPHENYLS ft bgs: FEET BELOW EXISTING GROUND SURFACE mg/kg: MILLIGRAMS PER KILOGRAM (ppm) REFERENCE: (1) TOPOGRAPHIC AND BOUNDARY SURVEY, PREPARED BY GEODIMENSIONS, DATED APRIL 11, 2016.(2) ZGA FIELD MEASUREMENTS 30 0 15 30 SCALE IN FEET MAR-VEL MARBLE REDEVELOPMENT 202 Main Street Edmonds, Washington SUMMARIZED SOIL ANALYTICAL DATA: TEST PITS DATE: MAY 2018 Job No. 1811.20 Zipper Geo Associates, LLC FIGURE ^ 19019 36th Ave. W.,Suite E 3 Lynnwood, WA SHT.1 of 1 B-7/MW-7 SAMPLE DEPTH (ft. bgs) TPH-G (mg/kg) B (mg/kg) T (mg/kg) E (mg/kg) X (mg/kg) VOCs (mg/kg) 6 - 6 1/2 <2 <0.03 <0.05 <0.05 <0.1 <Varies 10 - 11 <2 <0.03 <0.05 <0.05 <0.1 <Varies 21-21112 <2 <0,03 <0.05 <0.05 <0,1 <Varies B-6/M W-6 SAMPLE DEPTH (ft. bgs) 'TPH-G (mg/kg) TPH-D (mg/kg) TPH-O (mg/kg) B (mg/kg) T (mg/kg) E (mg/kg) X (mg/kg) VOCs (mg/kg) 15 - 16 <2 <50 <250 <0.03 <0.05 <0.05 <0.1 <Varies 35 - 36 <2 <50 <250 <0.03 <0.05 0 0 V <Varies <0. 5 < cries , B-6/MW-6 LEGEND B-1/MW-1 EXPLORATION ID AND APPROXIMATE LOCATION TPH-G: GASOLINE -RANGE TOTAL PETROLEUM HYDROCARBONS TPH-D: DIESEL -RANGE TOTAL PETROLEUM HYDROCARBONS TPH-O: OIL -RANGE TOTAL PETROLEUM HYDROCARBONS B:BENZENE T: TOLUENE E: ETHYLBENZENE X: XYLENES VOCs: OTHER VOCs BY EPA METHOD 8260C ft bgs: FEET BELOW EXISTING GROUND SURFACE mg/kg: MILLIGRAMS PER KILOGRAM (ppm) * ASTERISK INDICATES THAT ANALYTE WAS DETECTED ABOVE METHOD REPORTING LIMIT BUT BELOW LABORATORY REPORTING LIMIT I \ B-2/MW-2 A\ B-7/MW-7 Rip R \ B-8/MW-8 , ■ B-4/MW-4 B-5/MW-5 \ B-1/MW-1 B-3/MW-3 , \ B-9/MW-9 , B-9/M W-9 SAMPLE DEPTH (ft. bgs) B (mg/kg) T (mgikg) E (mg/kg) X (mg/kg) I VOCs (mg/kg) 8-9 <0.03 <0.05 <0.05 <0.1 <Varies 15 - 16 <0.03 <0.05 <0.05 <0.1 <Varies REFERENCE: (1) PRELIMINARY GRADING AND UTILITY PLAN, CG ENGINEERING, DATED 10.06.2016 (2) ZGA FIELD MEASUREMENTS B-2/MW-2 SAMPLE DEPTH (ft. bgs) TPH-G (mg/kg) TPH-D (mg/kg) TPH-O (mg/kg) B (mg/kg) T (mg/kg) E (mg/kg) X (mg/kg) 2 1/2 - 3 <5.93 <25.0 <50.0 <0.0119 <0.0593 <0.0297 <0.0890 3 1/2 - 4 1,220 80.2 <50.0 <0.0104 <0.0521 0.0896 0.161 5-6 4.84' <25.0 <50.0 <0.0105 <0.0526 0.0168" <0.0788 7 1 /2 - 8 <57.5 <25.0 <50.0 <0.0115 <0.0575 <0.028 <0.0863 10 - 10 112 <6.52 <25.0 <50.0 <0.0130 <0.0652 <0.0326 <0.0977 15 - 15 112 <5,47 <25.0 <50.0 <0.0109 <0.0547 <0.0274 <0.0821 30 - 30 1/2 <7.44 <25.0 <50.0 <0.0149 <0.0744 <0.0372 <0.112 B-8/MW-8 SAMPLE B (mg/kg) T (mg/kg) E (mg/kg) X (mg/kg) VOCs (mg/kg) DEPTH (ft. bgs) 15 - 16 <0.03 <0.05 <0.05 <0.1 <Varies B-4/MW-4 SAMPLE iDEPTH (ft bgs) B (mg/kg) T (mgikg) E (mg/kg) X (mg/kg) VOCs (mg/kg) 151/2-16 <0-03 <0.05 <0.05 <0.1 <Varies 28 - 29 <0,03 <0.05 <0.05 <0.1 <Varies B-5/MW-5 SAMPLE B (mgikg) T (mg/kg) E (mg/kg) X (mg/kg) VOCs (mg/kg) DEPTH (ft bgs) 21 - 21 1/2 <0.03 <0.05 <0.05 <0.1 'Varies B-3/M W-3 SAMPLE DEPTH (ft bgs) B mg/kg) T (mg/kg) E (mg/kg) X (mgikg) VOCs (mg/kg) 151/2-16 <0.03 <a02 <0.05 <0.1 <Varies 281/2-29 <0,03 <0.05 <0.05 <0.5 <Varies 30 SCALE IN FEET MAR-VEL MARBLE REDEVELOPMENT 202 Main Street Edmonds, Washington 15 30 SUMMARIZED SOIL ANALYTICAL DATA: BORINGS/TEST PITS DATE: MAY 2018 Job No. 18 Zipper Geo Associates, LLC FIGURE 19019 36th Ave. W.,Suite E Lynnwood, WA SHT.1 of 1 CI I F=r FNII I& B-1/MW-1 B-7/MW-7 VOCs (ug/L) DATE OF TPH-G (ug/L) COLLECTION BENZENE sec-BUTYLBENZENE ISOPROPYLBENZENE 10/2/2017 320 0.52 1.2 1 1.1 B-6/M W-6 VOCs (ug/L) DATE OF TPH-G (ug/L) BENZENE CHLOROFORM COLLECTION 10/2/2017 <100 1.1 4.1 I I I I B-2/i'VIW-2 ' B-7/MW-7 I B-6/MW-6 B-1/MW-1 C :5/26/2017 TPH-G (ug/L) TPH-D (ug/L) TPH-O (ug/L) VOCs (ug/L) EDC TCE PCE <100 <187 <374 0.640 2.44 6.18 10/2/2017 <100 NA NA <1 1.6 3.8 EXPLORATION ID AND APPROXIMATE LOCATION TPH-G: GASOLINE -RANGE TOTAL PETROLEUM HYDROCARBONS TPH-D: DIESEL -RANGE TOTAL PETROLEUM HYDROCARBONS TPH-O: OIL -RANGE TOTAL PETROLEUM HYDROCARBONS VOCs: VOLATILE ORGANIC COMPOUNDS BY EPA METHOD 8260C, ONLY DETECTIONS ARE LISTED IN TABLES. ALL OTHERS NON -DETECT WITH VARIED REPORTING LIMITS. EDC: 1,2-DICHLOROETHANE TCE: TRICHOLORETHENE PCE: TETRACHLOROETHENE ug/L: MICROGRAMS PER LITER (ppb) NA: NOT ANALYZED B-2/M W-2 DATE OF COLLECTION TPH-G (ug/L) TPH-D (ug/L) TPH-O (ug/L) VOCs (ug/L) EDC 5/26/2017 170 <190 <381 4.85 10/2/2017 1 150 1 NA NA 3.2 eaCr � I B-8/MW-8 , I B-4/MW-4 B-5/MW-5 I B-1/MW-1 B-3/MW-3 , _ B-9/MW-9 , B-9/M W-9 VOCs (ug/L) DATE OF TPH-G (ug/L) COLLECTION TCE PCE 10/2/2017 <100 1.2 13 REFERENCE: (1) PRELIMINARY GRADING AND UTILITY PLAN, CG ENGINEERING, DATED 10.06.2016 (2) ZGA FIELD MEASUREMENTS B-8/M W-8 VOCs (ug/L) DATE OF TPH-G (ug/L) COLLECTION ACETONE 10/2/2017 <100 120 B-4/MW-4 VOCs (ug/L) DATE OF TPH-G (ug/L) COLLECTION LOROf ORM 10/2/2017 <100 2.8 B-5/MW-5 DATE OF TPH-G (ug/L) VOCs (ug/L) COLLECTION 10/2/2017 <100 1 <Varies B-3/MW-3 VOCs (ug/L) DATE OF TPH-G (ug/L) COLLECTION CHLOROFORM] 10/2/2017 <100 T6 30 0 15 30 SCALE IN FEET MAR-VEL MARBLE REDEVELOPMENT 202 Main Street Edmonds, Washington SUMMARIZED GROUNDWATER DATA DATE: MAY 2018 Job No. Zipper Geo Associates, LLC FIGURE 19019 36th Ave. W.,Suite E Lynnwood, WA SHT.1 of 1 1.20 Mar-Vel Marble Redevelopment Z pperGeo ZGA Project No. 1811.20 Graprafesssunal Consultants Environmental Media Management Plan May 11, 2018 APPENDIX C TABLES 27 Marvel Marble Redevelopment ZGA Project No. 1811.20 Table 1. Summarized Analytical Laboratory Results - Soil (Test Pits) Date of Collection (ft) Sample ID Depth Sampled (ft) TPH (mg/kg) Total Metals (mg/kg) **** VOCs (mg/kg) PAHs (mg/kg) PCBs (mg/kg) Gasoline Diesel Oil Lead Arsenic Cadmium Chromium Mercury Benzene Toluene :thylbenzen Total Xylenes Other VOCs via 8260C Former fueling area 8/21/2017 TP-1A@7' 7 1,800 - - 4.81 - - - ND <0.02 2.6 15 23 - 8/21/2017 TP-1A, S-Side@10' 10 ND <2 - 2.08 - - ND <0.02 ND <0.02 ND <0.02 ND <0.06 - - 8/21/2017 TP-1B, E-Side@10' 10 ND <2 - - 2.02 - - ND <0.02 ND <0.02 ND <0.02 ND <0.06 - - Former heating UST 8/21/2017 TP-2A@8' 8 - 830 ND <250 - - - - - ND <0.02 ND <0.02 ND <0.02 ND <0.06 ND <Varies - 8/21/2017 TP-2A@ 10' 10 - ND <50 ND <250 - - - - - - _ - - - 8/21/2017 TP-2A, E-Side@7' 7 - ND <50 ND <250- 8/21/2017 TP-2A, W-Side@7' 7 - ND <50 ND <250- 8/21/2017 TP-2B, S-Side@8' 8 ND <50 ND <250 - - - - - - - - - - 8/21/2017 TP-2B, N-Side@8' 8 - ND <50 ND <250 - - - - - - - - Former floor drain 8/21/2017 TP-3@3 1/2' 3 1/2 ND <2 ND <50 ND <250 2.75 6.83 N D <1 1 16.0 ND <1 ND <0.03 ND <0.05 N D <0.05 N D <0.15 - ND <0.01 ND <0.02 Former hoist 8/21/2017 TP-4@7' 7 - 2,300 3,100 - - - - - - _ - - - - 8/21/2017 TP-4, N-Side@7' 7 - ND <50 ND <250 - - - - - - - - - - 8/21/2017 TP-4, E-Side@6 1/2' 6 1/2 ND <50 ND <250- 8/21/2017 TP-4, W-Side@8' 8 - ND <50 ND <250 - - - - - - - - MTCA Method A Cleanup Level (mg/kg): 100/30 * 2,000 2,000 250 20 2 19/2,000** 2 0.03 7 6 9 Varies 0.1*** 1 LEGEND 1,800 : Rose -shaded values indicate a regulatory exceedance. 4.81 : Bold values indicate a detection of the specified analyte that does not exceed the applicable CUL. 100/30* : The MTCA Method A cleanup level for gasoline varies based on the concentration of BTEX within the gasoline mixture. The 100 mg/kg cleanup level is only applicable in gasoline mixtures without benzene 19/2,000** : Chromium can be speciated into trivalent (Cr III) or hexavalent (Cr VI) valent states, and each has a unique CUL. The CUL for Cr VI is lower than the CUL for Cr III. The reported results are for total chromium. The reported results do not need to be speciated into Cr III and Cr VI because the total of Cr III and Cr VI does not exceed the more conservative CUL. 0.1*** : CUL for PAHs is derived from the CUL for benzo(a)Pyrene per MTCA. ND <# : Non -detect, concentration does not exceed laboratory MRL of #. IOCs (mg/kg)*** : Tabulated VOC results report only those analytes detected above the laboratory MRL. All other VOCs included in EPA Method 8260C were below laboratory MRLs. Mar-Vel Marble Redevelopment ZGA Project No. 1811.20 Table 2. Summarized Analytical Laboratory Results - Soil (Borings) Date of Collection Sample ID Depth of Collection (ft) TPH (mg/kg) VOCs (mg/kg)**** Gasoline Diesel Oil Benzene Toluene Ethylbenzene Total Xylenes Other VOCs via 8260C B-2 @ 2 1/2-3' 2 1/2-3 ND <5.93 ND <25.0 ND <50.0 ND <0.0119 ND <0.0593 ND <0.0297 ND <0.0890 - B-2@3 1/2-4' 3 1/2 - 4 1,220 80.2 ND <50.0 ND <0.0104 ND <0.0521 0.0896 0.161 - B-2@5-6' 5-6 4.84* ND <25.0 ND <50.0 ND <0.0105 ND <0.0526 0.0168* ND <0.0788 - 4/28/2017 B-2@7 1/2-8' 7 1/2 - 8 ND <5.75 ND <25.0 ND <50.0 ND <0.0115 ND <0.0575 ND <0.028 ND <0.0863 - B-2@10-10 1/2 10 - 10 1/2 ND <6.52 ND <25.0 ND <50.0 ND <0.0130 ND <0.0652 ND <0.0326 ND <0.0977 - B-2@15-15 1/2 15-15 1/2 ND <5.47 ND <25.0 ND <50.0 ND <0.0109 ND <0.0547 ND <0.0274 ND <0.0821 - B-2@30-30 1/2 30 - 30 1/2 ND <7.44 ND <25.0 ND <50.0 ND <0.0149 ND <0.0744 ND <0.0372 ND <0.112 - B-3/MW-3@15 1/2-16' 15 1/2 - 16 - - - ND <0.03 ND <0.02 ND <0.05 ND <0.1 ND <Varies B-3/MW-3@28 1/2-29' 28 1/2 - 29 - - - ND <0.03 ND <0.05 ND <0.05 ND <0.5 ND <Varies 9/12/2017 B-4/MW-4@15 1/2-16' 15 1/2 - 16 _ - - ND <0.03 ND <0.05 ND <0.05 ND <0.1 ND <Varies B-4/MW-4@28-29' 28 - 29 - - - ND <0.03 ND <0.05 ND <0.05 ND <0.1 ND <Varies B-5/MW-5@21-21 1/2' 21 - 21 1/2 - - - ND <0.03 ND <0.05 ND <0.05 ND <0.1 ND <Varies B-6/MW-6@15-16' 15 - 16 ND <2 ND <50 ND <250 ND <0.03 ND <0.05 ND <0.05 ND <0.1 ND <Varies B-6/MW-6@35-36' 35 - 36 ND <2 ND <50 ND <250 ND <0.03 ND <0.05 ND <0.05 ND <0.1 ND <Varies B-7/MW-7@6-6 1/2' 6 - 6 1/2 ND <2 - - ND <0.03 ND <0.05 ND <0.05 ND <0.1 ND <Varies 9/13/2017 B-7/MW-7@10-11' 10 - 11 ND <2 - - ND <0.03 ND <0.05 ND <0.05 ND <0.1 ND <Varies B-7/MW-7@21-21 1/2' 21 - 21 1/2 ND <2 - ND <0.03 ND <0.05 ND <0.05 ND <0.1 ND <Varies B-8/MW-8@15-16' 15 - 16 - ND <0.03 ND <0.05 ND <0.05 ND <0.1 ND <Varies B 9/MW 9@8 9 8 9 - - - ND <0.03 ND <0.05 ND <0.05 ND <0.1 ND <Varies 9/14/2017 B-9/MW-9@15-16' 15 - 16 - - - ND <0.03 ND <0.05 ND <0.05 ND <0.1 ND <Varies MTCA Method A CUL (mg/kg) 30/100** 2,000 2,000 0.03 7 6 9 Varies LEGEND 1,220 : Rose -shaded values indicate a detection that exceeds the applicable cleanup level. 80.2 : Bold values indicate a detection above the laboratory reporting limit that does not exceed the applicable cleanup level, 4.84* : Bold values with an aesterisk indicate a detection above the method detection limit but below the laboratory reporting limit. These values are included to help illustrate presence/absence. 30/100** : The MTCA Method A cleanup level for gasoline varies based on the concentration of BTEX within the gasoline mixture. The 100 mg/kg cleanup level is only applicable in gasoline mixtures without benzene and the total of ethylbenzene, toluene, and xylene are less than 1% of the gasoline mixture. ND <# : Non -detect, concentration does not exceed laboratory MRL of #. VOC (mg/kg)**** : Tabulated VOC results report only those analytes detected above the laboratory MRL. All other VOCs included in EPA Method 8260C were below laboratory MRLs. Marvel Marble Redevelopment ZGA Project No. 1811.20 Table 3. Summarized Analytical Laboratory Results - Groundwater TPH (ug/L) VOCs (ug/L)**** Date of Collection Sample ID Gasoline Diesel Oil Acetone Benzene sec-Butylbenzene Chloroform 1,2-Dichloroethane (EDC) Isopropyl benzene Trichloroethene Tetrachloroethene 5/26/2017 B-1, GW ND <100 ND <187 ND <374 ND <20.0 ND <0.200 ND <1.00 ND <1.00 0.640 ND <1.00 2.44 6.18 10/2/2017 B-1/MW-1 ND <100 - ND <20 ND <0.35 ND <1 ND <1 ND <1 ND <1 1.6 3.8 5/26/2017 B-2, GW 170 ND <190 ND <381 ND <20.0 ND <0.200 ND <1.00 ND <1.00 4.85 ND <1.00 ND <0.500 ND <0.500 10/2/2017 B-2/M W-2 150 - - ND <20 ND <0.35 ND <1 ND <1 3.2 ND <1 ND <1 ND <1 10/2/2017 B-3/MW-3 ND <100 ND <20 ND <0.35 ND <1 7.6 ND <1 ND <1 ND <1 ND <1 1n/?/7nl7 B-4/MW-4 ND <100 - ND <20 ND <0.35 ND <1 2.8 ND <1 ND <1 ND <1 ND <1 10/2/2017 B-5/MW-5 ND <100 ND <20 ND <0.35 ND <1 ND <1 ND <1 ND <1 ND <1 ND <1 10/2/2017 B-6/MW-6 ND <100 - ND <20 1.1 ND <1 4.1 ND <1 ND <1 ND <1 ND <1 10/2/2017 B-7/M W-7 320 - - ND <20 0.52 1.2 ND <1 ND <1 1.1 ND <1 ND <1 10/2/2017 B-8/MW-8 ND <100 - 120 ND <0.35 ND <1 ND <1 ND <1 ND <1 ND <1 ND <1 10/2/2017 B-9/M W-9 ND <100 - ND <20 ND <0.35 ND <1 ND <1 ND <1 ND <1 1.2 13 MTCA Method A CUL (ug/L) = 800/1000* 500 500 NE 5 NE NE 5 NE 5 5 MTCA Method B Non -Cancer CUL (ug/L) = 7,200 800 80 NE MTCA Method B Cancer CUL (ug/L) = 1.41 NE LEGEND 13 : Rose -shaded values indicate a regulatory exceedance. 3.8 : Bold values indicate a detection above the laboratory reporting limit that does not exceed the applicable cleanup level. 800/1000* : The MTCA Method A CUL for gasoline varies based on the concentration of benzene in the mixture. The 800 mg/kg CUL may only be applied if there is no detectable benzene in groundwater. ND <# : Non -detect, concentration does not exceed laboratory MRL of #. NE : Not Established VOCs (mg/kg)**** : Tabulated VOC results report only those analytes detected above the laboratory MRL. All other VOCs included in EPA Method 8260C were non -detect, below laboratory MRLs. Mar-Vel Marble Redevelopment %i pper�po ZGA Project No. 1811.20 L .,1. Geoprofesssorsal Consultants Environmental Media Management Plan May 11, 2018 APPENDIX D BORING LOGS 28 Boring LLocaticn: See Figure 2, Site and Exploration Plan Drilling Company: Geologic Drill Bore Hole Dia.: 6-Inch T_oo Elevation: 40.88 Feet Drilling Method: H.S.A. Nam er e: Cathead B-1/MW-1 Date Drilled: 4/28/2017 Drill Rig: Mini -Track Logg d_by_ JPG SOIL DESCRIPTION PENETRATION RESISTANCE (6lows11000 E w L U) o C / Standard Penetration Test -C The stratification lines represent the approximate boundaries Z o Q Hammer Weight and Drop: U 0 between soil types. The transition may be gradual. Refer to E Q o report text and appendices for additional information. op 0 20 40 60 0 6 inches of concrete ----------------------------------------- L_ _.._. Loose to medium dense, wet grading to saturated, mottled gray -brown, silty SAND, some gravel (Possible Fill) 1 (PID < 1 5_t 14" I ' �4 .. I 27 rppm --�------------------�------------ Medium dense, moist to wet, gray -brown, silty SAND, some 11 D o I M gravel (Weathered Glacial Till) (PID < 1 ppm) ± I 1 -5 Dense, moist to wet, gray, fine to medium SAND, trace to s-2 16 % I ...' I I Sa some silt. (Glacial Outwash) (PID < 1 ppm)FT i u --------------------__---------------•-__--- Medium dense, -brown, silty SAND, some µ { I i moist, gray gravel s-3 18" I ` I I 27 GSA (Weathered Glacial Till) (PID < 1 ppm) I 10 Dense, moist, gray to gray -brown, silty SAND, some gravel (Weathered Glacial Till) (PID < 1 ppm) s-a 16" Q. I ,..�__I I I { 72 Very Dense, moist gray, silty SAND some gravel (Glacial Till) (PID < 1 ppm) I._I....1 I -•I r i..l_(..1.I ` TTI �.. _�- rjDense, wet, gray with slight iron oxide staining, silty SAND, some gravel (Glacial Till) (PID < 1 ppm) Very dense, moist, gray to gray -brown, silty SAND, some gravel (Glacial Till) (PID < 1 ppm) SAMPLE LEGEND R UNDWATER LEGEND I2-inch O.D. split spoon sample E Clean Sand 3-inch I.D. Shelby tube sample Bentonite Grout/Concrete ® Screened Casing TESTING KEY ❑ Blank Casing GSA = Grain Size Analysis Z Groundwater level at time of drilling (ATD) or 20OW = 200 Wash Analysis Q on date of Consol. = Consolidation Test measurement. Att. = Atterberg Limits Illllii i illll ��I I H H--I— ''I ��11 IIII�jI ;1111111 I S-5 I 16" I_ _01 !_ 40 GSA I-� Ilill i !� 1 r ri lilll j i+ �{ FT Ilill 1 .. _ �� 4- 44 III I it T S-6 I 101, 5015" If I 0 I 1 I li I {ill I I i �I �j�.� 0 % Fines (<0.075 mm) 0 % Water (Moisture) Content Plastic Limit III Liquid Limit Natural Water Content Mar-Vel Marble 202 Main Street Edmonds, WA Date: October 2017 Project No.: 1798.01 Zipper Geo Associates BORING B-1/MW-1 19019 36th Ave. W, Suite E LOG: Lynnwood, WA Page 1 of 2 Boring Location: See Figure 2, Site and Exploration Plan Drilling Comflanv: Geologic Drill Bore Hole Dia.: 6-Inch Too Elevation: 40.88 Feet Drillinq Method: H.S.A. Hammer Type: Cathead B-11MW-1 Date Drilled: 4/28/2017 Drill Rig- Mini -Track Logged by- JPG SOIL DESCRIPTION U PENETRATION RESISTANCE (blowblfonl) EJ Standard Penetration Test o 0) r The stratification lines represent the approximate boundaries Z 0 a U Q 0 0 Hammer Weight and Drop: 3 Q between soil types. The transition may be gradual. Refer to E =1 report text and appendices for additional information. co - m CD 0 20 40 60 25,Very dense, moist to wet, gray to gray -brown, SAND, with silt 1 I I I I � and gravel (Glacial Till) (PID < 1 ppm) s-� 14^ 11..+•- I4._ 1�1 sas liil I itil��Illlij 30 l Very dense, saturated, gray, fine to medium SAND, trace to s-8 I 12" D 1 50/6" GSA some silt, trace gravel (Glacial Advance Outwash) (PID < 1 = } -4- - I I ppm) (Moderate to severe heave encountered) = i ❑ ,II I I I +~IIII� 35 Boring completed at about 35 feet. Perched groundwater observed at about 3 feet ATD. Groundwater observed at about 27 feet ATD. Groundwater measured at 14.63 feet on 5/22/2017. Groundwater measured at 14.37 feet on 511612017. Groundwater Measured at 14.85 feet on 6/7/2017. Well Tag # BIK 772 140 101 50 ' - SAMPLE LEGEND GROUNDWATER LEGENd 2-inch O.D. split spoon sample %'0 Clean Sand 3-inch I.D. Shelby tube sample 0 Bentonite ■ Grout/concrete ® Screened Casing TESTING KEY ❑ Blank Casing GSA = Grain Size Analysis Groundwater level at time of drilling (ATD) or 20OW = 200 Wash Analysis N on date of Consol. = Consolidation Test measurement. Att. = Atterberq Limits 1 i1 i ill�,,l l III li I�III-I(.. I IIII iT F_ 71- ------! , ti. ii r. i 1 1 I 1 T*1 I- I-Ll f I I IIT I I I ��ff I � �IIiII'IIkl 'j1 II 0 % Fines (<0.075 mm) O % Water (Moisture) Content Plastic Limit Liquid Limit Natural Water Content Mar-Vel Marble 202 Main Street Edmonds, WA Date: October 2017 Project No.: 1798.01 Zipper Geo Associates 19019 BORING B-1/MW-1 36th Ave. W, Suite E Lynnwood, LOG: WA Page 2 of 2 _Boring Location: See Figure 2, Site and Exploration Plan Driltina Company: Geologic Drill Bore Hole Dia.: 6-Inch Too Elevatlon: 39.51 Feet Drilling Method: H.S.A. Hammer Type: Cathead B-2/MW-2 Date Drilled: 4/28/2017 Drill Ria: Mini -Track LLa ged by: JPG SOIL DESCRIPTION PENETRATION RESISTANCE (hlowsitoot) l.0 z ,A, Standard Penetration Test o 0) _1 m L The stratification lines represent the approximate boundaries z d o U d 0 Hammer Weight and Drop: Qbetween soil types. The transition may be gradual. Refer to E Q o F_ report text and appendices for additional information. 2 rp C7 0 20 40 60 4 to 5 inches of concrete- -----^^--------. l X ------- i 11 .I I I li� Medium dense, wet, mottled gray -brown, silty SAND, some gravel (Possible Fill) (Hydrocarbon Odor at Tip of Sampler) ------------- I E (PID = 43 ppm) S-1 I 14" +- -32 I I III Il; 1 i I I.I,i,j Very dense, moist, gray, silty SAND, some gravel (Glacial Till) s5 I 1 i I I I l (Hydrocarbon Odor) (PID = 109 ppm) s-z 1s^ I I I l fL.1 L-�'t ?llll Ijll Very dense, moist, gray, silty SAND, some gravel (Glacial Till) s-3 T 1a„ j I I I I I-I-f-�-� }-} 1 `-' 67 (Hydrocarbon Odor) (PID = 104 ppm) 1 , f 10 Very dense, moist, gray, silty SAND, some gravel (Glacial Till) S-4 18" ` ! 37 (Faint Hydrocarbon odor) (PID = 45 ppm) ! i i T1 �� fT Ti 1 1 „+Illi 4rldill -------------------------- '---_-_--------- } ; l��.. . ;I�❑❑-_#I } 15 Dense, wet to saturated, gray -brown SAND, with silt and D T ;)Ili! I Ill#I S-5 I 10" 1 j �, ! I I ,� 36 gravel. (Glacial Till) (PID = 10 ppm) 11 ` I i i -f" I ` � i 'H-i �I i_di F I III I Itl1-4 ll L.111 .. I Illlili 20 Very dense, wet to saturated, gray -brown SAND, with silt and S-6 I 12" ' 1 � I says° can gravel (Glacial Till) (PID = 6 ppm) ,{ 1 hi 1 i 1 Q 11 jII f' ----- -------------------------------- �....:.. ...i �1 Very dense, saturated, gray SAND, some silt (Glacial Advance j I I H❑utwash) (PtD = 2 ppm) 25 SAMPLE LEGEND GROUNDWATER LEGEND % Fines (<0.075 mm) I2-inch O.D. split spoon sample .`% Clean Sand O % Water (Moisture) Content 3-inch I.D. Shelby tube sample Bentonite Plastic Limit I E) Liquid Limit Grout/Concrete Natural Water Content ® Screened Casing Mar-Vel Marble TESTING KEY ❑ Blank Casing 202 Main Street GSA = Grain Size Analysis Groundwater level at Edmonds, WA time of drilling (ATD) or 20OW = 200 Wash Analysis N on date of Date: October 2017 Project No.: 1798.01 Consol. = Consolidation Test measurement. Zipper Geo Associates BORING B-2lMW-2 Att. = Atterberg Limits 19019 36th Ave. W, Suite E LOG: Lynnwood, WA Page 1 of 2 Boring Location: See Figure 2, Site and Exploration Plan Drilling ComoanV: Geologic Drill Bore Hole Dia.: 6-Inch Ton Elevation: 39.51 Feet Drillings Method: H.S.A. Hammer Type: Cathead B-2/MW-2 Date Drilled: 4/28/2017 rill Ri 9 Mini -Track Logged by: JPG SOIL DESCRIPTION PENETRATION RESISTANCE (blows/foot) 3 J Standard Penetration Test o The stratification lines represent the approximate boundaries z a- o Q Hammer Weight and Drop: U Obetween soil types. The transition may be gradual. Refer to E o report text and appendices for additional information. < - m 0 20 40 60 25,Very dense, saturated, gray SAND, some silt (Glacial Advance Outwash) (PID_ 2 ppm)-----------_ { I I I I i d Ve dense, wet to saturated, gray, silt- SAND, some ravel very 9 Y, Y 9 (Glacial Till) (PID = 2 ppm) X }t--- I - I I. I --------------------------------------------- Dense, Dense, saturated, gray, fine to medium SAND, trace to some s-s ie, I silt (Glacial Advance Outwash) (PID < 1 ppm) 35 Boring completed at about 35 feet. Groundwater observed at about 15 feet ATD. Groundwater measured at 13.18 feet on 5/22/2017. Groundwater measured at 13.88 feet on 5/26/2017. Groundwater measured at 13.20 feet on 6/7/2017. Groundwater measured at 15.56 feet on 10/2/2017. Well Tag # BIK 773 i40 F45 50 SAMPLE LEGEND u DWATER LEGS ❑ I2-inch O.D. split spoon sample Clean Sand 3-inch I.D. Shelby tube sample ® Bentonite Grout/Concrete ® Screened Casing TESTING KEY ❑ Blank Casing GSA = Grain Size Analysis Z Groundwater level at time of drilling (ATD) or 20OW = 200 Wash Analysis �2 on date of Consol. = Consolidation Test measurement. Att. = Atterberg Limits 37 ill I , III I II I� I III "Li I;,..., O % Fines (<0.075 mm) 0 % Water (Moisture) Content Plastic Limit Liquid Limit Natural Water Content Mar-Vel Marble 202 Main Street Edmonds, WA Date: October 2017 Project No.: 1798.01 Zipper Geo Associates 19019 BORING B-2/MW-2 36th Ave. W, Suite E Lynnwood, LOG: WA Page 2 of 2 Boring Location: See Figure 1, Site and Exploration Plan Drilling _Com nz EDI Bore Hole Dia.: 6-inch Ton Elevation. 40 feet Drilling Method: HSA Hammer Tye Auto B-3/MW-3 Date Drilled: 9/12/2017 Drill Ria: B-61 Truck Lowed bv: JST SOIL DESCRIPTION PENETRATION RESISTANCE (wow&tfouti � W z � Standard Penetration Test o The stratification lines represent the approximate boundaries z o Q Hammer Weight and Drop: U between soil types. The transition may be gradual. Refer to 0 3 0 report text and appendices for additional information. 2 m 0 20 40 60 -° l� I{II}1 Ill;lllll Illi'IIII Ii II li'Il I Ilii II -j,�lj j jl Medium dense, moist,mottledgray-brown silty SAND, trace - S-1 T 18„ I ! �I I } F '1 30 to some gravel, no odor, PID <1 ppm. (Weathered Glacial Till) 1 II -I li IIIII+ II I II IIII 5 Dense, damp, gray, sandy SILT, some gravel, no odor, PID <1 s-2 1e" 33 __ ppm. (Glacial Till) l- - _L_. If I Ill it I I I {II III 10 Very dense, moist, gray, silty SAND, with gravel, no odor, PID T I, I + I S-3 I 12" I I _ I_ _ _ _ \ 75 <1 ppm. (Glacial Till) 1I { � '"r r —{ I II I i.+lll I I. 15 Medium dense, wet, gray with oxidation mottling, silty SAND, some gravel, no odor, PID <1 ppm. (Glacial Till) s-a 12L L I_. 30 ill A Sample B-3/MW-3 @15 1/2-16' submitted for analysis for VOCs. Groundwater observed on rods at 18 1/2 feet. "'' 20 Very dense, saturated, gray -brown with oxidation mottling, S 5 I 8 III 1 I \50/3" silty SAND, some gravel, no odor, PID <1 ppm. (Glacial Till) I I,.• I + I 1 Very dense, saturated, dark gray, gravelly SAND, with silt, no . s-s 18.. I ► 75 odor, PID <1 ppm. (Glacial Till) � I I I I I •25 SAMPLE LEGEND GROUNDWATER LEQEN O % Fines (<0.075 mm) I2-inch O.D. split spoon sample f''+ Clean Sand O % Water (Moisture) Content 3-inch I.D. Shelby tube sample Bentonite Plastic Limit III Liquid Limit Grout/Concrete Natural Water Content >� Screened Casing Mar-Vel Marble TESTING KEY Blank Casing 202 Main St. GSA = Grain Size Analysis Z Groundwater level at Edmonds, WA time of drilling (ATD) or 20OW = 200 Wash Analysis Q on date of Date: October 2017 Project No.: 1811.22 Consol. = Consolidation Test measurement. Zipper Geo Associates BORING B-3/MW-3 Aft. = Atterberq Limits 19019 36th Ave. W, Suite E LOG: Lynnwood, WA Page 1 of 2 See Figure 1, Site and Exploration Plan 40 feet 9/12/2017 SOIL DESCRIPTION The stratification lines represent the approximate boundaries Qbetween soil types. The transition may be gradual. Refer to report text and appendices for additional information. Drilling Comoanv: EDI Bore Hole Dia.: 6-inch Drilling Method: HSA Hammer Type: Auto Drill i • B-61 Truck Logged JST PENETRATION RESISTANCE (blawsrfoot) co E J m Standard Penetration Test a d Hammer Weight and Drop: E Q r/) O 0 0 20 40 `25 Very dense, saturated, dark gray, silty GRAVEL with sand, no S-7 161, odor PID <1-PP .1Glacial Till1 --------------------- Very dense, saturated, gray -brown, gravelly SAND, some silt, S-8 T 16„ y no odor, PID <1 ppm. (Glacial Advance Outwash) 1 Sample B-3/MW-3 @ 28 1/2-29' submitted for analysis for .30 VOCs. Very dense, saturated, gray -brown, SAND, some silt, no odor, s-9 1 15.. PID <1 ppm. (Glacial Advance Outwash) _ — 35 Very dense, saturated, gray, SAND, trace to some silt, trace _10 12„ A gravel, no odor, PID <1 ppm. (Glacial Advance Outwash) II. Boringcompleted at about 36 1/2 feet. I Groundwater observed at approximately 18 1/2 feet ATD bgs. I ! III I I Groundwater measured at 16.15 feet on 9/12/17, immediately after well installation, from TOC. Groundwater measured at 16.22 feet on 9/14/17 from TOC. 40 Groundwater measured at 16.52 feet on 10/2/17 from TOC. Ecology Well Tag ID # BIZ 381. j �.,�4:;,�. I II 45 III �_...... __...._. . 50 SAMPLE LEGEND GROUNDWATER LEGEND I2-inch O.D. split spoon sample ( Clean Sand 3-inch I.D. Shelby tube sample ® Bentonite Grout/Concrete ® Screened Casing TESTING KEY ❑ Blank Casing GSA = Grain Size Analysis Groundwater level at _ time of drilling (ATD) or 20OW = 200 Wash Analysis t- on date of Consol. = Consolidation Test measurement. Att. = Atterberq Limits i '7 Iff11. Illlil B-3/M W-31 CD c 0 c 0 o in 62 56 0 % Fines (<0.075 mm) O % Water (Moisture) Content Plastic Limit I ED --] Liquid Limit Natural Water Content Mar-Vel Marble 202 Main St. Edmonds, WA Date: October 2017 Project No.: 1811.22 Zipper Geo Associates BORING B-3/MW-3 19019 36th Ave. W, Suite E LOG: Lynnwood, WA Page 2 of 2 See Figure 1, Site and Exploration Plan 40 feet 9/12/2017 SOIL DESCRIPTION y The stratification lines represent the approximate boundaries Qbetween soil types. The transition may be gradual. Refer to report text and appendices for additional information. �- 0 F- 5 Very dense, moist, light brown, SAND with silt and gravel, no odor, no PID. (Glacial Till) Very dense, damp, light brown, sandy SILT, with gravel, no odor, PID <1 ppm. (Glacial Till) 10 Very dense, damp, light brown, sandy SILT, with gravel, no odor, PID <1 ppm. (Glacial Till) Very dense, moist to wet, mottled light brown with gray, silty SAND, with gravel, no odor, PID <1 ppm. (Glacial Till) ri Very dense, wet, light brown with oxidation, silty SAND, trace gravel, no odor, PID <1ppm. (Glacial Till) E25 Very dense, wet, light brown mottled with gray, silty SAND, with gravel, no odor, PID <1 ppm. (Glacial Till) SAMPLE LEGEND GRQUNDW6TgR4EGEND I2-inch O.D. split spoon sample U:17�j Clean Sand 3-inch I. D. Shelby tube sample Bentonite Grout/concrete ® Screened Casing TESTING KEY ❑ Blank Casing GSA = Grain Size Analysis '� Groundwater level at time of drilling (ATD) or 20OW = 200 Wash Analysis t2 on date of Consol. = Consolidation Test measurement. Aft. = Atterberq Limits Drilling Company EDI Bore Hole Dia.: 6-inch Drilling_Method: HSA Hammer Type: Auto B-4/MW-4 Dfll ' . B-61 Truck Wigged by-: JST ` U PENETRATION RESISTANCE (blowsffoot) ELU -1 Standard Penetration Test o 0) D- Hammer Weight and Drop: U E (Y :3 3 ° U 0 20 40 60 Co I I I I + 15" 57j—{- — — I I III, Ili I' jl� � I I I II,I i II'iltl-+ I I I S-3 I 18" 70 �ilflll.. ;,...t{. I ii ;i.... I ill jl II II T pIII I S-6 I 12" I �i i•• Iji i Ililll 0 % Fines (<0.075 mm) O % Water (Moisture) Content Plastic Limit Liquid Limit Natural Water Content Mar-Vel Marble 202 Main St. Edmonds, WA Date: October 2017 Project No.: 1811.22 Zipper Geo Associates BORING 13-4/MW-4 19019 36th Ave. W, Suite E LOG; Lynnwood, WA Page 1 of 2 See Figure 1, Site and Exploration Plan 40 feet 9/12/2017 SOIL DESCRIPTION The stratification lines represent the approximate boundaries Qbetween soil types. The transition may be gradual. Refer to report text and appendices for additional information. Very dense, wet, light gray mottled with brown, trace oxidation, silty SAND, trace gravel, no odor, PID <1 ppm. (Glacial Till) ------------------------------------------- Very dense, saturated, light brown, SAND, trace silt with gravel, no odor, PID <1 ppm. (Glacial Advance Outwash) 30 Very dense, saturated, light brown, SAND, trace silt and gravel, no odor, PID <1 ppm. (Glacial Advance Outwash) ]drilling Coman)L EDI Bore Hole Dia.: 6-inch Drilling Method: HSA Hammer Ty� Auto B-4/MW-4 ❑rill Ria: B-61 Truck Logyed bv: JST PENETRATION RESISTANCE (blows/foot) 07 E Lij Standard Penetration Test U) o J EQ ? 0 Hammer Weight and Drop: 3 o C7 _o m 0 20 40 60 S-7 16„ l i i► 79 I I I ,'i11 I S-s I1e" 1 I I 35 Very dense, saturated, light brown, SAND, some silt, interbed of sandy fine GRAVEL from 35 1/2 to 36 feet, no odor, PID <1 ;5-10 18" ppm. (Glacial Advance Outwash) Boring completed at about 36 1/2 feet. Groundwater observed at about 19 1/2 feet bgs ATD. Groundwater measured at 16.99 feet below TOC on 9/12/17, immediately after well installation. Groundwater measured at 17.07 feet below TOC on 9/14/17. 40 Groundwater measured at 17.39 feet below TOC on 10/2/17. Ecology Well ID: BIZ 382 50.1 SAMPLE LEGEND GROUNDWATER GROUNDWATER LEG -EN I2-inch O.D. split spoon sample .�., Clean Sand 3-inch I.D. Shelby tube sample Bentonite Grout/concrete ® Screened Casing TESTING KEY Blank Casing GSA = Grain Size Analysis Groundwater level at _ time of drilling (ATD) or 20OW = 200 Wash Analysis Q on date of Consol. = Consolidation Test measurement. Aft. = Atterberq Limits i i ill I I I 1l�I I I I I! I ,• Il11j 1f I �� f 1 'iil{I I , O % Fines (<0.075 mm) O % Water (Moisture) Content Plastic Limit Liquid Limit Natural Water Content Mar-Vel Marble 202 Main St. Edmonds, WA Date: October 2017 Project No.: 1811.22 Zipper Geo Associates BORING B-4/MW-4 19019 36th Ave. W, Suite E LOG: Lynnwood, WA Page 2 of 2 Boring Location: See Figure 1, Site and Exploration Plan Drilling Camoanv: EDI Bore Hole Dia.: 6-inch Ton Elevation: 40 feet Drillinq_Method: HSA Hammer Tie: Auto B-5/MW-5 Date Drilled: 9/12/2017 Drill Rig: B-61 Truck Loaned bv: JST SOIL DESCRIPTION PENETRATION RESISTANCE (blows/foot) _ E J A Standard Penetration Test o s The stratification lines represent the approximate boundaries z 0 U d 8 Hammer Weight and Drop: aa) between soil types. The transition may be gradual. Refer to - 2 0 3 Fa- report text and appendices for additional information. m 0 20 40 60 -0 i II II Moist, light brown mottled with oxidation, silty SAND, no odor, S-1 13„ I I I I ! I { L50/5" PID <1 ppm. (Blow counts overstated, pounding on rock) I j ' j i (Weathered Glacial Till) ��------------------------------------ { II I II I I III. 5 5-2 10, TM No recovery. (Based on drilling action and observed cuttings, L50/6„ sample likely driven into silty SAND). (Glacial Till) II I I II I II III I T II II I II I I 10 Very dense, moist, light brown, silty GRAVEL, with sand, no I s� I I �5as° odor, PID <1 ppm. (Glacial Till) — I I ili II.I.. I,I Ili - )f II I IIII. III , I I 15 — — ----.... Dense, moist to wet, light gray to brown with oxidation, silty SAND, some gravel interbedded with sandy GRAVEL some silt, no odor, PID <1 ppm. (Glacial Till)`` I i r r Dense to very dense, moist, light brown mottled with oxidation, 20 silty SAND, no odor, PID <1 ppm. (Blow counts overstated, T ;:.,•..ti;; I I f pounding on rock) (Glacial Till) s-5 I 12 l I i I I I f ` I l l l l l l i 5o/s �1fl�IIiI' f�I..Ij Boring completed at about 21 feet. l l { I f Perched groundwater encountered at about 15 1/2 feet b s ATD. g 9 Groundwater measured at 16.25 feet below TOC on 9/14/17. I I I Groundwater measured at 16.61 feet below TOC on 10/2/17. Ecology Well ID: BIZ 383 I� { SAMPLE LEGEND I2-inch O.D. split spoon sample 3-inch I.D. Shelby tube sample TESTING KEY GSA = Grain Size Analysis 20OW = 200 Wash Analysis Consol. = Consolidation Test Att. = Atterberq Limits GROUNDWATER LEGEND 0 % Fines (<0.075 mm) f❑ Clean Sand 0 % Water (Moisture) Content [ Bentonite Plastic Limit 1 G—j Liquid Limit Grout/Concrete Natural Water Content ® Screened Casing Mar-Vel Marble ❑ Blank Casing 202 Main St. Groundwater level at Edmonds WA time of drilling (ATD) or on date of Date: October 2017 Project No.: 1811.22 ^' measurement. BORING Zipper Geo Associates 19023 B-5/MW-5 36th Ave. W, Suite D Lynnwood, LOG; WA Page 1 of 1 See Figure 1, Site and Exploration Plan 38 feet 9/13/2017 SOIL DESCRIPTION The stratification lines represent the approximate boundaries between soil types. The transition may be gradual. Refer to report text and appendices for additional information. Dritlina Company; EDI Bore Hole Dia.: 6-inch Drilling Method. HSA HammerType- Auto Drill Rig B-61 Truck Loggg�^by JST PENETRATION RESISTANCE powsiroot) ` W -J u Standard Penetration Test a8 Hammer Weight and Drop: Q o (n 0 0 20 40 B-6/MW-61 •o II !! ll -- I�:I II Medium dense, moist, gray to brown mottled with oxidation, I '-!"'�" 9 Y � � I IT . silty SAND, with gravel, no odor, PID <1 ppm. (Weathered T I _ I ' I ' Glacial Till) s-1 I 18" I I I I,I I 30 I I II 11 I I, Very dense, damp, gray, sandy SILT, some gravel, no odor, I 1 S-2 #-!-; 58 PID <1 ppm. (Glacial Till) II II 1 III 'II V 'II1 III I I I Il I 10 Very dense, moist, gray, silt SAND, with gravel, no odor, PID S-3 12" 55 <1 ppm. (Glacial Till) I'"i `-r" I {�"'1 i I I f II I I I �1i1111 � Iilll I.. Ills. 15. Very dense, wet, light brown, silty SAND, interbedded with s-4 1e" j I I so gray, SAND with silt, some gravel, no odor, PID <1 ppm. (Glacial Till) I I I I i I II IIII I 111�E'11if ii II Ilj 20 T Very dense, wet, gray to brown, SAND, with silt and gravel, S-5 I 12" I ►50i6- interbedded with silty SAND, no odor, PID <1 ppm. (Glacial 1 I I + I ! I Till) L...I_ .- IJ-:.. Very dense, wet, blue to gray, sandy SILT, no odor, PID <1 S-s 1r I k I f I. 150/5" ppm. (Glacial Till) { I I i t III I I f III, II i II� 25 SAMPLE LEGEND GROUNDW&IER LEGEND o O % Fines (<0.075 mm) I2-inch O.D. split spoon sample U� Clean Sand O % Water (Moisture) Content 3-inch I.D. Shelby tube sample ® Bentonite Plastic Limit Liquid Limit N Grout/Concrete Natural Water Content ® Screened Casing Mar-Vel Marble TESTING KEY ❑ Blank Casing 202 Main St. GSA = Grain Size Analysis VGroundwater level at Edmonds, WA time of drilling (ATD) or 20OW = 200 Wash Analysis N on date of Date: October 2017 Project No.: 1811.22 Consol. = Consolidation Test measurement. BORING Att. = Atterberq Limits Zipper Geo Associates B-6/MW-6 19019 36th Ave. W, Suite E LOG: Lynnwood, WA Page 1 of 2 See Figure 1, Site and Exploration Plan 38 feet 9/13/2017 SOIL DESCRIPTION F The stratification lines represent the approximate boundaries Obetween soil types. The transition may be gradual. Refer to report text and appendices for additional information. ,Drilling Company: EDI Bore Hole Dia.: 6-inch Drilling Method. HSA Hammer Ty1)e- Auto Drill i B-61 Truck Logged b}L JST PENETRATION RESISTANCE (blowslfoot) a U) E w (9 Standard Penetration Test Z a >0Hammer a � c Weight and Drop: Q D o C7 0 20 40 Very dense, saturated, blue to gray, gravelly SILT, with sand, s-7 1 9 no odor, PID <1 ppm. (Glacial Till) Very dense, saturated, blue to gray, SILT, with sand, trace gravel, no odor, PID <1 ppm. (Glacial Till) 30------------------------------------------- Dense, saturated, gray, SAND, trace silt and gravel, moderate odor, PID <1 ppm. (Unusual odor unlike typical hydrocarbon odor. Smelled sickly sweet and herby) (Glacial Advance Outwash) rlDense, saturated, gray, SAND, trace silt and gravel, moderate odor, PID <1 ppm. (Same unusual odor as above) (Glacial Advance Outwash) M Very dense, saturated, gray, SAND, trace silt and gravel, moderate odor, PID=57.2 ppm. (Same unusual odor as above) (Glacial Advance Outwash) Very dense, saturated, gray, SAND, trace silt and gravel, no odor, PID <1 ppm. (Glacial Advance Outwash) Boring completed at about 38 1/2 feet. Groundwater observed at about 24 1 /2 feet bgs ATD. Groundwater measured at 14.29 feet below TOC on 9/12/17 Groundwater measured at 14.61 feet below TOC on 10/2/17 Ecology Well ID: BIZ 384 50 SAMPLELEGEND GRQUNDWATQ LEGEND I2-inch O.D. split spoon sample L�] Clean Sand 3-inch I.D. Shelby tube sample ® Bentonite Grout/concrete Screened Casing TESTING KEY L] Blank Casing GSA = Grain Size Analysis Groundwater level at _ time of drilling (ATD) or 20OW = 200 Wash Analysis t2 on date of Consol. = Consolidation Test measurement. Att. = Atterberq Limits 3.8 I 1 0I1 11 I 18" 12 18" lil ll�l I I lii I �II�I I I B-6/MW-61 U) C � 0 C 0 U _o 60 m 33 I� I I 46 56 1 63 ii. I I i I I i I I I I I I II I I ail I I I I I I I I � I I I I I Q % Fines (<0.075 mm) O % Water (Moisture) Content Plastic Limit Liquid Limit Natural Water Content Mar-Vel Marble 202 Main St. Edmonds, WA Date: October 2017 Project No.: 1811.22 Zipper Geo Associates BORING B-6/MW-6 19019 36th Ave. W, Suite E LOG: Lynnwood, WA Page 2 of 2 Baring Location: See Figure 1, Site and Exploration Plan DdIllna Comnanv: EDI Bore Hole Dia.: 6-inch Tod Elevation: 38 feet Drilling Method• HSA Hammer Type Auto B-7/MW-7 (Date Drilled: 9/13/2017 B-61 Truck Logged by, JST SOIL DESCRIPTION PENETRATION RESISTANCE (blows/foot) E J Standard Penetration Test o CM The stratification lines represent the approximate boundaries 0 Hammer Weight and Drop:Cn 0 between soil types. The transition may be gradual. Refer to E � o a) co report text and appendices for additional information. m 0 20 40 60 0-I1AI Medium dense, damp, mottled gray -brown with some S-1 tI ` '_.•� 21 1e„ oxidation, silty SAND, no odor, PID <1 ppm. (Weathered I I I I Glacial Till) I + I•• I� -5---------------------------------------------- Dense, damp, gray -brown, silty SAND, no odor, PID <1 ppm. s-z I 1a„ ( 1 Aa5 (Glacial Till) 1 +11 I 10 Dense, damp, gray, gravelly SAND, with silt, PID=9.6 ppm. T s-s (Slight hydrocarbon odor) (Glacial Till) I 1e A a� ;i .•. I l i I I , ti-<- _ �ll,il� I �•�jl�- ; 11 Ttl - — Dense, wet, gray, silty SAND, trace gravel, no odor, PID=8.4 s a ppm. (Glacial Till) - I -.. 20] Very dense saturated, gray, SAND, with gravel and silt, no odor, PID <1 ppm. (Glacial Till) Boring completed at about 21 feet bgs. Groundwater observed at about 19 feet bgs ATD. Groundwater measured at 14.01 feet below TOC on 9/14/17, Groundwater measured at 14.31 feet below TOC on 1012/17. Ecology Well ID: BIZ 385 SAMPLE LEGEND GROLINDW6MR LEGEND I2-inch O.D. split spoon sample Clean Sand 3-inch I.D. Shelby tube sample Bentonite Grout/concrete ® Screened Casing TESTING KEY ❑ Blank Casing GSA = Grain Size Analysis Groundwater level at time of drilling (ATD) or 20OW = 200 Wash Analysis _N on date of Consol. = Consolidation Test N measurement. Att. = Atterberq Limits 5-5 I 12„ ..- . l I I i j i I 15oi5" 4 — f { -I-.., j 0 % Fines (<0.075 mm) 0 % Water (Moisture) Content Plastic Limit Liquid Limit Natural Water Content Mar-Vel Marble 202 Main St. Edmonds, WA Date: October 2017 Project No.: 1811.22 Zipper Geo Associates BORING B-7/MW-7 19019 36th Ave. W, Suite E LOG; Lynnwood, WA Page 1 of 1 Boring Location. • See Figure 1, Site and Exploration Plan ,Drilling Comoanv: EDI Bore Hole Dia.: 6-inch Toe Elevation: 43 feet Drilling Method_ HSA Hammer Type: Auto 13-81MW-8 Date Drilled: 9/13/2017 Drill Rim B-61 Truck Logged by, JST SOIL DESCRIPTION PENETRATION RESISTANCE (blows/foot) w LLI _ E Standard Penetration Test o The stratification lines represent the approximate boundaries z 0- U - a d _0 0 Hammer Weight and Drop: Qbetween soil types. The transition may be gradual. Refer to e o report text and appendices for additional information. � - op Q 20 40 60 o ,� �� Poor recovery, brown, moist, sandy GRAVEL, with silt, no I odor. (Blow counts overstated, pounding on rock) (Based on S_1 = t_ I IT ❑- L50/3" drilling action and observed cuttings we interpret up to 4 feet 44 1 1-- of weathered till/weathered till fill in this location) I I No recovery. (Based on drilling action and observed cuttings I 11 5 we interpret a glacial till contact at about 4 feet bgs) � I i � •�� Ill 10 S-3 2 3" `ram'- I + I -k \50/3" Very dense, damp, gray -brown, silty SAND, with gravel, no_� ll odor, PID <1 ppm. (Glacial Till) Very dense, moist to wet, mottled gray and brown with sa I t V. I 150/5" oxidation, silty SAND, with gravel, no odor, PID <1 ppm. �:•'�_•'. 1 (Glacial Till) I ' I I III1 20 Very dense, grades to saturated at about 19 feet, mottled gray and brown with oxidation , silty SAND, with gravel, no odor, PID <1 ppm. (Glacial Till) S_5 1 to I i 1 as Boring completed at about 21 112 feet. Groundwater observed at about 18.5 feet bgs ATD. I I Groundwater measured at 17.61 feet below TOC on 9/12/17. Groundwater measured at 18.00 feet below TOC on 10/2/17. I I Ecology Well Tag ID: BIZ 386 25 SAMPLE LEGEND GROUNDWATER LEGEND O % Fines (<0.075 mm) I2-inch O.D. split spoon sampleClean Sand O % Water (Moisture) Content 3-inch I.D. Shelby tube sample 0 Bentonite Plastic Limit Liquid Limit 0 Grout/concrete Natural Water Content ® Screened Casing Mar-Vel Marble TESTING KEY ❑ Blank Casing 202 Main St. GSA = Grain Size Analysis Groundwater level at Edmonds, WA time of drilling (ATD) or 20OW = 200 Wash Analysis t�- on date of Date: October 2017 Project No.: 1811.22 Consol. = Consolidation Test N measurement. Zipper Geo Associates BORING B-$BMW-g Aft. = Atterberq Limits 19019 36th Ave. W, Suite E LOG: Lynnwood, WA Page 1 of 1 Boring Loeatian: See Figure 1, Site and Exploration Plan Drilling Gompa�Y, EDI Bore Hole Dia.: 6-inch Ton Elevation: 40 feet Drilling Method: HSA Hammer Types: Auto B-91MW-9 Date Drilled: 9/14/2017 Drill Rig: B-61 Truck Logaed by; JST SOIL DESCRIPTION PENETRATION RESISTANCE (blows/foot) L E LU � Standard Penetration Test o m The stratification lines represent the approximate boundaries z Q. o _0 A Hammer Weight and Drop: U N 0_ between soil types. The transition may be gradual. Refer to E � o Q report text and appendices for additional information. 2 m 0 20 40 60 • 0 I I f I ` l i ].. I � ` Medium dense moist gray -brown silty SAND some gravel, 44 f I I I + -I I I no odor, PID <1 ppm. (Weathered Glacial Till) s-1 I 12 Medium dense, moist, gray -brown, silty SAND, some gravel to 5 about 5 1/2 feet. T Medium dense, moist, gray -brown, SAND, some silt, no odor, s-2 I 16" PID <1 ppm. (Glacial Outwash) -»"^----------r_--- Very dense, moist, gray with oxidation, silty SAND, some gravel (Glacial Till). . , S-3 14" ------------ �- --------------------' Very dense, moist, gray, SAND, some silt and gravel, no odor, 10 `� PID<1 ppm. Vertical contact at 8 1/2 feet, silty SAND with / T `' some oxidation along contact. (Glacial Outwash)� ------- S-4 I 16" Very dense, damp to moist, gray, silty SAND, with gravel, no 11 odor, PID <1 ppm. (Glacial Till) Very dense, damp to moist, mottled gray and brown, silty S-5 1 I 12" 15 GRAVEL, with sand, no odor. (Glacial Till) Very dense, saturated, gray -brown, SAND, with silt, some I s-6 I 16" gravel, no odor, PID <1 ppm. (Glacial Till) Groundwater observed at about 18 1/2 feet bgs ATD. Groundwater measured at 14.73 feet below TOC on 9/14/17. Groundwater measured at 15.99 feet below TOC on 10/2/17. 25 SAMPLE LEGEND GROUNDWATER LEGEND I2-inch O.D. split spoon sample Clean Sand 3-inch I.D. Shelby tube sample Bentonite Grout/Concrete ® Screened Casing TESTING KEY ❑ Blank Casing GSA = Grain Size Analysis Groundwater level at time of drilling (ATD) or 20OW = 200 Wash Analysis on date of Consol. = Consolidation Test measurement. Att. = Atterberq Limits I I 26 iiI _f I I I i._ 67 + T11 .I... 'l r II III II�II +III'+h L73 i SIT i rl .❑�:;. I =D I'Ifl� I II I�11 L75 I. I��_ II I ii I II I I Il� 0 % Fines (<0.075 mm) 0 % Water (Moisture) Content Plastic Limit Liquid Limit Natural Water Content Mar-Vel Marble 202 Main St. Edmonds, WA Date: October, 2017 Project No.: 1811.22 Zipper Geo Associates BORING B-9/MW-9 19019 36th Ave. W, Suite E LOG: Lynnwood, WA Page 1 of 1 Mar-Vel Marble Redevelopment ZipperGeo ZGA Project No. 1811.20 Gcoprafessional consultants Environmental Media Management Plan May 11, 2018 APPENDIX E TEST PIT LOGS 29 ZIPPER GEO ASSOCIATES, LLC 19019 36`h Avenue West, Suite E, Lynnwood, Washington 98036 Test Pit Log TP-1A Project: Mar-Vel Marble Location: See Site and Exploration Plan, Figure 1 Project No: 1811.22 Approx. Ground Surface Elevation: 38 feet Date Excavated: 08/21/2017 Depth Material Description Sample PID Odor (ft) (ppm) Loosc, damp, dark brown, SAND, with silt and organics 1 (SANDY TOPSOIL) ..... , ... ............. . Medium dense, damp, brown, SAND, with silt and gravel, some organics, oxidation mottling from 1 to 3 feet bgs 2 (WEATHERED GLACIAL TILL) 221 Slight 3 ...................................... Very dense, moist, light brown, sandy SILT, with gravel 4 (Glacial Till) Some perched groundwater in sand lens at 4 5 feet bgs. Transitions to gray at 4 feet and below. Color change coincides with moderate odor of TPH. 6 Discoloration and odor most distinct in north sidewall. Moderate to strong odor of TPH from approximately 4 to 10 feet bgs in north sidewall. 7 TP-1A @7' 1647 Strong 8 9 TP-1A, S-Side @10' 7.1 Mod. 10 Odor decreases to slight below 10 feet bgs in north sidewall. 11 12 7.2 Slight to 13 Odor decreases to trace below 13 feet bgs in north none 14 sidewall. 15 Field indications of PCS extend to the south of the north sidewall for approximately 10 feet in a zone between 6 16 and 10 feet bgs. Test pit completed at about 18 feet bgs. 17 Slight to 18 Perched groundwater observed at about 4 feet bgs. 1'3 none ZIPPER GEO ASSOCIATES, LLC 19019 36" Avenue West, Suite E, Lynnwood, Washington 98036 Test Pit LoR TP-1B Location: See Site and Exploration Plan, Figure 1 Approx. Ground Surface Elevation: 38 feet Project: Mar-Vel Marble Project No: 1811.22 Date Excavated: 08/21/2017 Depth (ft) Material Description Sample PID (ppm) Odor 1 Loose, damp, dark brown, SAND, with silt and organics (SANDY TOPSOIL) Medium dense, damp, brown, SAND, with silt and gravel, some organics, oxidation mottling from 1 to 3 feet bgs (WEATHERED GLACIALTILL) Very dense, moist, light brown, sandy SILT, with gravel (Glacial Till). Some perched groundwater in sand lens at 4 feet bgs. Transitions to gray at 4 feet and below. Color change coincides with moderate odor of TPH. Discoloration and odor most distinct in north sidewall. Moderate to strong odor of TPH from approximately 4 to 10 feet bgs. Field indications of PCS extend approximately 15 feet from west sidewall of excavation at a depth of approximately 4 to 10 feet bgs. 2 3 4 5 6 7 8 9 10 TP-1B, E-Side @10' 1.7 Slight to none 11 12 Test pit completed at about 12 feet bgs. Perched groundwater observed at about 4 feet bgs. 13 14 15 16 17 18 ZIPPER GEO ASSOCIATES, LLC 19019 36`h Avenue West, Suite E, Lynnwood, Washington 98036 Test Pit Log TP-2A Project: Mar-Vel Marble Location: See Site and Exploration Plan, Figure 1 Project No: 1811.22 Approx. Ground Surface Elevation: 40 feet Date Excavated: 08/21/2017 Depth Material Description Sample PID Odor (ft) (ppm) 1 Loosc, damp, dark brown, gravelly SAND, with silt and organics (SANDY TOPSOIL)* ....................................... Medium dense, damp, light brown, gravelly SILT, with sand (WEATHERED GLACIAL TILL)* < 1 None 2 < 1 None ...................................... .Very 1.1 None 3 dense, damp, light brown, gravelly SILT, with sand (GLACIAL TILL)* 4 Gray discoloration and odor from 4 % to 9 % feet bgs 43.3 Moderate 5 along edges of heating oil UST cavity and directly below the UST cavity. Field indications of TPH extended 6 approximately 10 to 15 feet beyond the edges of the UST cavity to the east and west at a depth of approximately 5 TP-2A, E-Side@7' < 1 7 to 8 feet bgs. TP-2A, W-Side@7' 1.1 TP-2A@8' 8 Very dense, damp, light brown, sandy GRAVEL, with silt (GLACIAL TILL) 232.7 Strong 9 TP-2A@10' 27.6 Moderate 10 1.9 Slight 11 12 Test pit completed at about 10 % feet bgs. No groundwater observed during excavation. 13 * TP-2A transected the north edge of heating oil UST cavity. We observed pea gravel backfill in the central 14 approximately 8 feet of the southern edge of the test pit to a depth of approximately 5 % feet. 15 16 17 18 ZIPPER GEO ASSOCIATES, LLC 19019 36`h Avenue West, Suite E, Lynnwood, Washington 98036 Test Pit Lo__ TP-213 Project: Mar-Vel Marble Location: See Site and Exploration Plan, Figure 1 Project No: 1811.22 Approx. Ground Surface Elevation: 40 feet Date Excavated: 08/21/2017 Depth Material Description Sample PID Odor (ft) (ppm) L oose, damp, dark brown, gravelly SAND, with silt and 1 organics (SANDY TOPSOIL)* Medium dense, damp, light brown, gravelly SILT, with sand (WEATHERED GLACIAL TILL)* None 2 None . ...................................... None 3 Very dense, damp, light brown, gravelly SILT, with sand (GLACIAL TILL)* Moderate 4 Gray discoloration and odor from 4 % to 9 % feet bgs 5 along edges of heating oil UST cavity and directly below the UST cavity. Field indications of TPH extended 6 approximately 10 to 15 feet beyond the edges of the UST cavity to the north and south at a depth of approximately 7 5 to 8 feet bgs. Moderate Tp-2B, S-Side@8' 2.2 (South) 8 Very dense, damp, light brown, sandy GRAVEL, with silt TP-2B1 N-Side@8' < 1 (North) (GLACIAL TILL) Moderate 9 10 11 12 Test pit excavation completed at about 10 % feet bgs. No groundwater observed during excavation. 13 * TP-213 transected the heating oil UST cavity. We observed pea gravel backfill in the central approximately 14 8 feet of the test pit to a depth of approximately 5 % feet. 15 16 17 18 ZIPPER GEO ASSOCIATES, LLC 19019 36`h Avenue West, Suite E, Lynnwood, Washington 98036 Test Pit Log TP-3 Location: See Site and Exploration Plan, Figure 1 Approx. Ground Surface Elevation: 38 feet Project: Mar-Vel Marble Project No: 1811.22 Date Excavated: 08/21/2017 Depth (ft) Material Description Sample PID (ppm) Odor 1 Loose, damp, brown, silty SAND, with organics (SANDY TOPSOIL) Dense, damp, light brown with oxidation mottling, silty SAND, with gravel (WEATHERED GLACIAL TILL) 2 3 4 1.2 Test pit excavation completed to about 3 % feet bgs. No field indications of PCS. No groundwater observed during excavation. 5 6 7 8 9 10 11 12 13 14 15 16 17 18 ZIPPER GEO ASSOCIATES, LLC 19019 36" Avenue West, Suite E, Lynnwood, Washington 98036 Test Pit Log TP-4 Project: Mar-Vel Marble Location: See Site and Exploration Plan, Figure 1 Project No: 1811.22 Approx. Ground Surface Elevation: 43 feet Date Excavated: 08/21/2017 Depth Material Description Sample PID Odor (ft) (ppm) Medium dense, damp, light brown, silty SAND, with 1 gravel, some oxidation mottling (WEATHERED GLACIAL TILL) ..................................... None Slight 2 Very dense, damp, light brown, silty SAND, with gravel (GLACIAL TILL) 3 Localized pea gravel from approximately 1 to 6 feet bgs. 4 Field indications of PCS from approximately 2 to 7 feet bgs Moderate 5 and radially approximately 3 to 5 feet from the edges of the hoist cavity. Gray discoloration and a slight to 6 moderate odor. <l TP-4, E-Side@6.5' 28.8 TP-4@7' Moderate 7 TP-4, N-Side@7' 2.2 Slight to 8 Light brown, damp, very dense, sandy GRAVEL, with silt TP-4, W-Side@8' none 9 10 (GLACIAL TILL) 11 12 13 14 15 16 Test pit completed at about 16 % feet bgs. 17 Backfilled with clean soil below 8 feet. Backfilled with PCS above 8 feet. 18 Groundwater not observed during excavation. Mar-Vel Marble Redevelopment ZGA Project No. 1811.20 Environmental Media Management Plan May 11, 2018 APPENDIX F Zi pperGeo G,raprpless001141 Consultants GUIDELINES FOR RE -USE OF PETROLEUM CONTAMINATED SOILS w Guidance for Remediation of Petroleum Contaminated Sites Section 12-Re-use of Soils Table 12.1 Guidelines for Reuse of Petroleum -Contaminated Soil 1 Soil Category (8)(9)(10) 1 2 3 4 Parameter Analytical No detectable Commercial Fill Paving Base Landfill Daily Method Petroleum Above Water Material & Cover or Asphalt Components Table Road Manufacturing (mg/kg) Construction (mg/kg) (mg/kg) (mg/kg) Total Petroleum Hydrocarbons (1)(2) See Table 7.1 for petroleum products that fall within these categories. Gasoline Range NWTPH-Gx <5 5 - 30 >30 - 100 >100 Organics Diesel Range Organics NWTPH-Dx <25 25 - 200 >200 - 500 >500 Heavy Fuels and Oils* NWTPH-Dx <100 100 - 200 >200 — 500 >500 Mineral Oil NWTPH-Dx <100 100 - 200 >200 — 500 >500 Volatile Petroleum Components Benzene SW8260B <0.005 0.005 - 0.03 0.03 or less See Table 12. Ethylbenzene SW8260B <0.005 0.005 - 6 6 or less >6 Toluene SW8260B <0.005 0.005 - 7 7 or less >7 Xylenes (3) SW8260B <0.015 0.015 - 9 9 or less >9 Fuel Additives & Blending Components (MTBE) Methyl Tert- SW8260B <0.005 0.005 - 0.1 0.1 or less >0.1 Butyl Ether Lead SW6010A <17 17 - 50 >50 - 220 See Table 12.2 Other Petroleum Components Polychlorinated (4) SW8082 <0.04 <0.04 <0.04 See Table 12.2 Biphenyls (PCBs) Naphthalenes (5) SW8260B <0.05 0.05 - 5 5 or less >5 cPAHs (6) SW8270C <0.05 0.05 - 0.1 >0.1 - 2 >2 Other Petroleum Characteristics (Applies to soils contaminated with any petroleum product.) Odors Smell No detectable odor Staining Visual No unusual color or staining Sheen Test See Footnote No visible sheen #7 IMPORTANT. See Table 12.2 and the footnotes to this Table on the following pages! Test soil for the parameters specified in Table 7.2. *Does NOT include waste oil contaminated soils, which should be disposed of in a landfill. "<" means less than; ">" means greater than Table 12.1 Guidelines for reuse of petroleum -contaminated soil. Washington State Department of Ecology Pub. No. 10-09-057 Page 188 Guidance for Remediation of Petroleum Contaminated Sites Section 12-Re-use of Soils Table 12.2 Description and Recommended Best Management Practices for Soil Categories in Table 12.1 (continued next page) Category Acceptable Uses Limitations Category 1 Soils: Soils with no • Can be used anywhere the use These soils should be odor -free. detectable/ quantifiable levels of is allowed under other petroleum hydrocarbons or regulations. constituents using the analytical • Any use allowed for Category methods listed in Table 7.3 and 2, 3 & 4 soils. are not suspected of being contaminated with any other hazardous substances. Catesory 2 Soils: Soils with • Any use allowed for Category These soils may have a slight petroleum odor, depending on the sensitivity of the residual levels of petroleum 3 & 4 soils. individual. This should be considered when reusing these soils. hydrocarbons that could have . Backfill at cleanup sites above ■. Should be placed above the highest anticipated high water table. If seasonal groundwater adverse impacts on the the water table. elevation information is not available, place at least 10 feet above the current water table. environment in some circumstances. • Fill in commercial or • Should not be placed within 100 feet of any private drinking water well or within the 10 industrial areas above the year wellhead protection area of a public water supply well. water table. e Should not be placed in or directly adjacent to wetlands or surface water where contact ■ Road and bridge embankment with water is possible. construction in areas above . Should not be placed under a surface water infiltration facility or septic drain field. the water table. • Any other limitations in state or local regulations. Category 3 Soils: Soils with ■ Any use allowed for Category • Should be placed above the highest anticipated high water table. If seasonal ground water moderate levels of residual 4 soils. elevation information is not available, place at least 10 feet above the water table. petroleum contamination that • Use as pavement base • Should be a maximum of 2 feet thick to minimize potential for leaching or vapor impacts. could have adverse impacts on the environment unless re -used material under public and p • Should not be placed within 100 feet of any private drinking water well or within the 10 in carefully controlled private paved streets and year wellhead protection area of a public water supply well. y p p PP y roads. situations. • Should not be placed in or directly adjacent to wetlands or surface water. • Use as pavement base material under commercial • Should not be placed under a surface water infiltration facility or septic drain field. and industrial parking lots. • When exposed, runoff from area in use should be contained or treated to prevent entrance to storm drains, surface water or wetlands. IL • Any other limitations in state or local regulations. Table 12.2 Description and recommended best management practices for soil categories in Table 12.1 (continued next page). Washington State Department of Ecology Pub. No. 10-09-057 Page 189 Guidance for Remediation of Petroleum Contaminated Sites Section 12-Re-use of Soils Table 12.2 (continued) Description and Recommended Best Management Practices for Soil Categories in Table 12.1 Category Acceptable Uses Limitations Catesory 4 Soils: Soils ■ Use in the manufacture of Landfill Limitations: with high levels of asphalt. The soil should be tested for and pass the following tests: petroleum contamination that should not be re -used . Use as dailyi cover a ➢Free liquids test. Soils that contain free liquids cannot be landfilled without treatment. except in very limited lined municipal solid waste t soils that fail a TCLP for 173-303-071 under WAC ➢ TCLP for lead and benzene. Unless exempt(3)()' circumstances. or limited purpose landfill provided this is allowed lead or benzene must be disposed of as hazardous waste. under the landfill operating ➢ Flammability test. Soils that fail this test must be disposed of as hazardous waste. permit. ➢ Bioassay test under WAC 173-303-100(5). Soils that fail this test must be disposed of as hazardous waste. ➢ PCBs. Soils with a total PCB content of 2 ppm or more must be disposed of as hazardous waste. Soil used for daily cover should be stockpiled within the landfill lined fill area. Soil containing more than 10,000 mg/kg TPH should be buried immediately with other wastes or daily covered to limit potential worker exposure. Any additional limitations specified in the landfill permit or in other state or local regulations. Asphalt Manufacturing Limitations: Soil storage areas should be contained in a bermed area to minimize contact with surface water runoff from adjacent areas. Runoff from storage areas should be considered contaminated until tested to prove otherwise. Soil storage areas should also be lined and covered with a roof or secured tarp to minimize contact with precipitation and potential groundwater contamination. Leachate from storage areas should be considered contaminated until tested to prove otherwise. The soil should be tested for and pass the following tests: ➢ TCLP for lead and benzene. Unless exempt under WAC 173-303-071(3)(t), soils that fail a TCLP for lead or benzene must be disposed of as hazardous waste. ➢ Flammability test. Soils that fail this test must be disposed of as hazardous waste. ➢ Bioassay test under WAC 173-303-100(5). Soils that fail this test must be disposed of as hazardous waste. ➢ No detectable levels of PCBs in soil (<0.04 mg/kg). Precautions should be taken to minimize worker exposure to soil storage piles and any dust or vapors from these piles prior to feeding into the asphalt batch plant. IMPORTANT. See the following page for additional information! Washington State Department of Ecology Pub. No. 10-09-057 Page 190