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HomeMy WebLinkAboutCT 15-11; YADA FARM; PROPERTY MITIGATION PLAN FOR PESTICIDE-IMPACTED SOILS; 2018-01-05'' ' I4 JAN 29 2013 LAND DEVELOPMEJT E N G I NE - G PROPERTY MITIG N PLAN FOR STICIDE-IMPACTED SOILS PRO. SED 12-LO S DIVISION,.4. 4 ACRE .835 J.V.! T4WAY,Aj"N,1 6- 20-01 -6CtJ NTY 0 FS*N-&rEGO DEPARTMENT OF ENVIRONMENTAL HEALTH LAND AND WATER QUALITY DIVISION SITE ASSESSMENT AND MITIGATION PROGRAM P.O. BOX 129261 SAN DIEGO, CALIFORNIA 92112-9261 W.O. E7377-SC JANUARY 5, 2018 ) 7 V CT - 11 Geotechnical. Geologic. Coastal • Environmental 5741 Palmer Way • Carlsbad, California 92010 • (760) 438-3155 FAX (760) 931-0915 ' www.geosoilsinc.com January 5, 2018 W.O. E7377-SC County of San Diego Department of Environmental Health Land and Water Quality Division Site Assessment and Mitigation Program P.O. BOX 129261 San Diego, California 92112-9261 Attention: Ms. Laurie ApeCeChea Subject: Property Mitigation Plan for Pesticide-Impacted Soils, Proposed 12-Lot Subdivision, 4.14 Acres, 1835 Buena Vista Way, APN 156-220-01, Carlsbad, San Diego County, California Dear Ms. Apecechea: At the request and authorization of California West Communities, and based upon our previous environmental studies for the subject property (see Appendix A), GeoSoils, Inc. (GSI) has prepared this Property Mitigation Plan for crganochlorine pesticide impacted soil at 1835 Buena Vista Way, Carlsbad, San Diego County, California (see Figure 1). The scope of our work has included a review of the referenced documents in Appendix A, analysis of data, and preparation of this Property Mitigation Plan (PMP). The PMP has been developed to complete the requirements for site closure under the guidance of the County of San Diego Department of Environmental Health (DEH) Voluntary Assistance Program (VAP), and to satsfy permitting conditions of the City of Carlsbad for the proposed residential development at the subject site. SITE DESCRIPTION AND PROPOSED DEVELOPMENT The subject site consists of a quadrilateral-shaped property located at 1835 Buena Vista Way in Carlsbad, San Diego County, California (see Figure 1, Site Location Map). The site is bounded by McCauley Lane and existing residential development and a church to the southeast, by Buena Vista Avenue and residential development to the northwest, and by Valley Street and existing residential development to the southwest, and a house, and former nursery to the northeast. According to the 50-scale grading plans for Yada Family Farm Subdivision, prepared by bHA, Inc. (bHA, 2017), site elevations range between approximately 158 to 195 feet (unknown datum) for an overall relief of about 37 feet. Topographically, the site gently slopes to the southwesterly direction. The overall gradient of the site is on the order of 8:1 (.horizontal: vertical [h:v]) or flatter. Existing onsite ' L : - ••:l,i: \\ L . Sh'\. P0 1. 0 1000 2000 3000 4000 Base Map. TOPO: 2003 iaona/ Gegraphic, U.S.G.S. .n Luis Rey Quadrangle. Califonia -- San Diego Co. 7 5 Minute, date-i 1997, current, 1999. EmmW F=7 SITE n A B W B V V NOT TO SCALE e .................. Base Map: Google Maps, Copyright 2015 Google, Map Data Copyright 2015 Google This map is copyrighted by Google 20'5. It is unlawful c copy or reproduce all or any pall the rel f, whether for personal use or resale, without permis.uon. All rights reserved. W.O. E7377-SC 4 SITE LOCATION MAP NJ - Figure 1 structures include a one-story single-family residence and single-story structures and shade canopies associated with the formerly existing nursery. Based on a review of the grading plans by bHA (2017), GSl understands that the existing residential structure will remain as one lot; however, the existing agricultural facilities will be removed and the site prepared for the construction of 12 new lots for residential development. Two bioretention-basins will be located on either side of the proposed entrance parallel to Valley Street, and are to be maintained by Homeowner Association. Cut and fill grading will be necessary to achieve the design grades. Maximum planned cut and fill slopes on the order of 2 to 81/2 feet high, at a 2:1 (h:v) inclination, or flatter, are proposed. Maximum planned cut and fill thicknesses are on the order of 6 to 7 feet and 4 to 5 feet, respectively, except for under Yada Place, where the impacted soil is proposed to be placed at a depth of 26 feet below ground surface (BGS). We understand that the proposed buildings would be one- or two-story homes, with attached garages, utilizing typical foundations with slabs-on-grade. Sewage disposal is understood to be tied into the regional municipal system. Building loads are also assumed to be typical for these types of relatively light structures. The need for import soils is unknown. BACKGROUND The potential for impacted soil was investigated during a Phase I Site Assessment and Limited Phase TI Soil Evaluation conducted by GeoSoils, Inc., in August 2015 (GSl, 2015). During the limited soil evaluation, GSI collected twenty-four soil samples from eight locations (B-i through B-8) throughout the site (see Figure 2). Soil samples were collected at depths of approximately 6 inches, 1 foot, and 2 feet bgs. Soil samples collected at a depth of 6 inches bgs were composited into a total of four samples. Soil samples collected from depths of 1 and 2 feet bgs were placed on hold pending shallow sample results. Based on the site's past agricultural use, collected samples were transported to a California Department of Health Services (DHS) certified laboratory, following proper protocol, where they were analyzed for organochlorine pesticides (OCPs), total petroleum hydrocarbons as gasoline (TPHg), and arsenic. Two samples were analyzed for volatile organic compounds (VOCs). Previous analytical laboratory data reports are provided in Appendix B. Several OCPs were detected in soil samples collected at the 0 to 6 inch and 6 inch to 1 foot intervals. However, toxaphene was the only compound detected at concentrations in excess of residential land-use screening levels based on the United States Environmental Protection Agency (EPA) Region 9 Regional Screening Levels (RSLs). Arsenic was also detected in several samples, but was within the range of natural background concentrations for southern California soils (Bradford, et al., 1996; Chernoff, et al., 2008). Based on the results obtained from samples previously collected within the upper 1 foot, California West Communities W.O. E7377-Sc 1835 Buena Vista Way, Carlsbad January 5. 2018 File:wp12\E73000\E7377.pmp GeoSoils, Inc. Page 3 /k Ri~S16ENTIAL N BUENA _-T ALTER B-8 GSI LEGEND I'd RIM /NZ76 AV E) (W)Q (V)N54'46'43E 46031' CV) PAfrE2f7 o B- - APPROXIMATE LOCATION OF SOIL SAMPLE N 9'R/ j8ORI Bl645T6 ) R12.5% 5 M. .'6 L P( ke / T w I " ij- •.jE _5110 R EIM / B 2 . ¶ 12 / GENERAL NOTES: PROJECT EXISIINC POWERP PROP CURB SIN I '5 j Q/1 F1 177.2P.L'\ 1 IL RESIDENCE 171' I MINIMUMLOTS7ZEIS 9,500 S.F. ANDCUYWIREINPLACE' "I / !4 GUTTER fl'PEA-4C0 BOTT/ /51 I / I J 11/ / k jg[ 935P.E .LOT MOTH IS 60 FEET MIN. (MEASURED AT FRONT YARD SETBACK) 1636 RIM / . 10 1172 r r 5-SET&ACK1 k Js4 1._ NOTA PART 2 FRONT YARD SETBACK /520 EXIST. TYPE 'F' CB PER 0/IC 457-AF - '-',. / 152 5FL I1 - 16Z8 1- I " ?1. N SIDE YARD SETBACK EQUAL TO 10% OF LOT 810111 (MIN. 5' AND REMOVE CAP AND CONS7RUCT-N4OD!FIE0 I1"I8'' RCP B 0% 9572 £r j 95OO ,, S . - . \ NEED NOT EXCEED ID') INLET OPENING PER SDRSD D-2 — I 152.2 FL IN RCP . 9 1 ' ( •'STREET SIDE YARD SETBACK IS 10' EXIST 27.O LINE" I ' ORAl//ACE ESAIT 16J 1 1 7' / F/C - LOTS 13 & 74 TO BE MAINTAINED BY HOA 111.615 PER D 6QI: ROPWI5% lus £F 6 FIRE NOTES SE In 14 I - RICA N - / I U, I 1. FIRE ACCESS ROAD SURFACE THE SURFACE OF ALL FIRE N 159 . 1" L. \ 95 7 FG >J / DEPARTMENT ACCESS ROUTES SHALL BE OF AN IMPERVIOUS RR 601 TC A 23 5 85 89 jl fs 14 ) / 4 LQ\ MINIMUM LOAD OF 75,000 'ALL-YEATHER- SURFACE M POUNDS AXLE KEIGHT ATERIAL DESIGNED TO CARRY A - - , 156.FG /1 1C/ I ( I / / —'/,--- -'1 T/ / \394.OP.E. 2.FIRELANES.FIRELANESARETOBEDESIGNAIEDANDTHEYSHALL / I 20... '7 ' 15357/' ._ ..., - 7 _L. ! - .5 In8l / TYPE C_?t, I / / . \ BECOME THE RESPONSIBILITY OF THE DEVELOPER TO HAVE SAID /)JC ' " 'SE1BACKi 6 N TAININ ALL I ACCESS RESIRIC1IONS RECORDED. IHAT THE 0/BiER IS ,. - r) . ., ', 15 53 IE (p) / . F 'C / / RESPONSIBLE TO PROWOE AND MAINTAIN 10 I0EN11FY, AND ENSURE 610 BA§N brull 1 .1PE( / '7"B4 ENFORCEMEVT OF THOSE DE90NATED ACCESS. o 6145 XI /5 1727 P E I S I / ,,7/l 3 IN ACCORDANCE WITH CARLSBAD RESIDENTIAL AND FIRE CODES 2 I 2 ' ( SF SI I '' 1/ I I I / ,,, '/ / I I I '0 ' 158-22OO2 " - "' EFFECTIVE JANUARY 1, 2011, ALL RESIDENTIAL PROPEl/lIES I XI 0/ . r . I I ' I ' XI ... ' ' ' ' I RO ' "' REGARDLESS OF SIZE OR LOCATION NOT PERMITTED FOR Il165 P.E. / I I 1' c- / - I / / I ')N/ / / / I I . CONSIRUCIlON PRIOR TO JANUARY 1. 2011 SHALL BE PROVIDED 54O / " L - / ( "''-' I I XI 4 ,/ .-.' lATH AN APPROVED AUTUMN IIC FIRE SPRINKLER ElSiE/I. f 11 4. THE CENTER OR THE FURTHEST MOST WALL OR PROIEC71ON OF B 1< 5 12. THE DWELLING CANNOT EXCEED 150 FEET FROM THE 'CENTER-LINE' IF CC 1 4 A OF THE NEAREST FIRE DEPARTMENT ACCESS THIS DISTANCE IS TYPE B I IN ER L ID N RCP 19% / p,/l CL 16 FADE \ / C' SQ-, ;' - 30 /, 78 I TC / / ASIN I CONNECT TO EXISTING 4 ,''O'.. '_ . - '' . . R9' .-.- / ,N 1/ / I ' . 'f / A F/c RIO B 60 0 30 60 120 / 1831 HOYT ..........j I 14 WATER PER'DWG PROP. SEWER MN I "/60.5 16 11111 /4 .- c -- I 08 C ). 158.3 -I I452f',. "I 6a0FS'I5 I 10 246 c0X 50VC - — , 160 — — — OO 1?TYPE -i 'C ., T1 9 F9 le'R PUBLIC S EETI74.9FS ORPSEVERsl'MH 180.7 TC , - — TL1iY. -- LEGEND: LU 145315 pUT 54.118 I TEl WI ' .. 170.8 TO 178.54 RIM149.5 FL_ PE 8_IIN0' - I llylkld • - ... , 1b0JE "\C . l' \ , A " 83.2BIO 0!/T ® 12'ic12x4' BROOKS BOX 877/I PARKWAYDIJAIN CRATE qu Av LU6.9 IE I " '7. 3 8' o'' _-/ IS' - \ F I7ó I TC 5W Y 1 5.0' RIDE DECOMPOSED GRANITE WALKWAY (3 THICK) W/POL1'BOARO HEADER EDGING AROUND PERIMETER AND CEO FABRIC AT 0 B .1% YC . I I / " / ..' . . '. ' --'' 4 [ 8OM10 U8CRADE TB PROTECT FROM DRAINAGE 184.4 A FIC B-7 LOT 17 SIN 711f\ AND GUY KIRE IN PLACE FIG 164.5 BOTT FIC 4< 1 LL 535W 1 . / RETAIN/NC WALL fl-J 54/ 4' S ER 14-04 152.%E 166 P.E. 2 I . 810 BASIN174.2 RE I .P./' I 9,550 SF I L2EIT FL ERWDWC ' I 111625 TW SETBACK C F " 9.624 SF. "I" \ SETBACK / . A This document or efile is not a part of the Construction - REMOVEEXI)JG I frni - — '. 1' Documents and should not be relied upon as being an RETAININEJjU .-. / 7,. 1 /5 s' i, ' ..- accurate depiction of design. 9?" I46'l7 EXISTS VCP SEWER- LINE PERDWG24SjS " "i _ /1/ I I ACCESS RIG//IS TO MCCAULEY 1N5556'IIE 429.28 o / ,'o / / I 11 j j5VB0I ITS/ON-f I LANEREUNQUISHE)) LOTSI-4 ' i () ii . MCCAULEY LANE \(W (w), (w) TENTAXIVE NJAII 5; YADA FAMMY TRUST n' RESIDENT~IAI SITE MAP 4.-. 4-I /' flL I..h I // 51I5AVE\DACN:UA 1835BUENAVISTAWAY -. SUIT: "L' CAIlLSOAD.A.S2)08-4387 CARLSBAD, CA I Figure 2 WO. 993-128940 -- W.O. E7377-SC DATE: 01/18 SCALE: 1" = 60' GSI proceeded to have the soil samples collected at 1 to 2 feet analyzed. None of the samples collected at the 1 to 2 foot interval contained OCR concentrations in excess of the Region 9 RSLs, or arsenic above background levels. S ESTIMATED IMPACTED VOLUME OF TOXAPHENE S Based on the site soil sampling to date, GSI estimates that less than approximately S 12,900 cubic yards (CY) of soil exists on the site that are impacted with toxaphene at concentrations above the RSLs of 0.49 milligrams per kilograms (mg/kg). Toxaphene concentrations exceeding the RSLs occur in the upper 1 foot below existing ground surface, across the site, but were not encountered above that threshold below 2 feet. S SURFACE WATER AND GROUNDWATER According to the California Regional Water Quality Control Board - San Diego Region ([CRWQCB, 1994), the subject property is located within the El Salto Hydrologic Subarea . (HSA4.21) of the Buena Vista Creek Hydrologic Area (HA 4.20) of the Carlsbad Hydrologic Unit (HU 4.00). The Carlsbad Hydrologic Unit falls within Region 9 (San Diego Region) of the State of California Regional Water Quality Control Board (CRWQCB) Hydrologic Basin Planning Area (SA 9.00). Groundwater within this area is designated as having beneficial uses for municipal and domestic supplies, agricultural supply, and potential beneficial use . for industrial service supply (CRWQCB, 1994). Surface features normally associated with water wells were not observed during GSI's site reconnaissance. According to a historic groundwater monitoring report by Woodward-Clyde Consultants (1991), available on the State Water Resources Control Board Geotracker website, depth . to groundwater in the closest former groundwater monitoring well, located approximately 0.5 miles southwest of the site, fluctuated between approximately 10.95 and 12.30 feet below ground surface over a 21/2-year period. Groundwater flow direction was reportedly to the southwest. Based' on topography, which is often indicative, but not always . conclusive of groundwater flow direction, the regional groundwater flow direction is estimated to be generally to the southwest. Please note that many variables influence groundwater depth and flow direction, and the actual depth and direction at the site may be different than the estimates presented. No surface water was observed onsite during GSls site reconnaissance, nor was any groundwater encounter during our preliminary . geotechnical investigation of the site (GSI, 2015). GSI estimates that the regional groundwater table below the site is generally coincident with sea level, or approximately ± 158 feet below the lowest existing site elevation. H California West Communities W.O. E7377-SC 1835 Buena Vista Way, Carlsbad January 5, 2018 Fi1e:wp12\E73000\E7377.pmp GeoSoils, Inc. Page 5 SOIL PARAMETERS Field observations, sieve analysis (ASTM D422-63), and Expansion Index (E.I.) testing . (ASTM D4829) performed on soils during our subsurface geotechnical evaluation of the subject property (GSI, 2015) indicated site soil may be classified as sand and silty sand near the surface (which will be removed and recompacted during grading), based upon O the Unified Soil Classification System (USCS). Furthermore, the underlying paralic deposits are logged as becoming denser with depth. It is GSI's opinion that these soil . types are generally uniform and do not vary significantly in texture and composition. Permeability of these primary soil types (sand and silty sand), and underlying sediments is typically low. PROPOSED ONSITE PESTICIDE MITIGATION Introduction All work will be performed in accordance with the requirements and protocols of the O CSDDEH under the supervision of a California licensed engineer or professional geologist. Field activities will be conducted in accordance with a Community Health and Safety Plan (Appendix C) and Site Specific Health and Safety Plan (Appendix D). Location of Toxaphene • Past agricultural use at the subject site has led to OCP impacted soil. Based on the samples collected during GSI's 2015 limited soil evaluation (GSI, 2015), the site contains S OCPs (toxophene) at concentrations in excess of RSLs (0.49 mg/kg) to a depth of approximately 1 foot bgs. • S S S • • General Toxaphene Management Approach Subsequent to removal of all surface structures on the site, remedial grading will commence. Prior to the starting of grading, the site will be irrigated to infiltrate water into the soil to be removed. Given the nature of some of the site soils and the present condition of irrigation for agriculture activities onsite, soil moisture preparation is anticipated to extend about 1 to 2 feet into the subsurface. This will allow for movement of the soil with minimal dust generation during grading. As grading occurs, additional water will be added to the soil to further minimize dust and allow for the proper moisture for compaction of the fill materials. Once the soil has been properly irrigated, the top 2 feet of soil (to a depth where concentration of OCPs are below RSLs for residential uses) will be removed from the entire site, and stockpiled on site (approximately 12,900 CY). Once the top 2 feet of contaminated soil has been removed and stockpiled, the soil beneath the proposed Yada Place will be excavated and stockpiled separately (approximately 26,000 CY). The California West Communities W.O. E7377-SC 1835 Buena Vista Way, Carlsbad January 5, 2018 File:wpl2\E73000\E7377.pmp GeoSoils, Inc. Page 6 stockpiled impacted soil would then be placed at a minimum depth of 7 feet below the right of way and 10 feet below the proposed Yada Place (to give a 2-foot clearance from proposed utilities), and encapsulated with a minimum of 7 feet (in right of way) and 10 feet (under Yada Place) of non-contaminated soil/fill. Following the completion of the impacted-soil placement beneath Yada Place (prior to the placement of clean soil), geo-fabric will be placed over the contaminated soil in order for future site workers to identify the impacted soil. Sheet 3 of the grading plans by bHA (2017), show the limits of toxaphene removal at the site, as well as a cross-section (Section A-A') of the proposed placement area for the removed contaminated material. GSI and a separate environmental consulting company will provide observations of the toxaphene impacted soil removal. Random representative soil samples will be collected from the base of the excavation to verify that toxaphene has been removed to the site cleanup levels. GSI estimates about 10 samples will be collected from the removal bottoms. Once the remedial objectives have been achieved no further remedial excavation will occur in those areas. If toxaphene is detected above the site cleanup levels at any location, additional excavation will occur until the toxaphene is removed to the site cleanup level. Additional verification sampling will occur at that location to further confirm removal. / All samples will be collected from the excavation surface with a hand auger to a depth of 6 inches, once the target depth is reached. Samples will be stored into cold storage under chain of custody and transported to a California Department of Health Services (DHS) certified laboratory the next day, following quality assurance/quality control procedures (QA/QC) during all soil sampling activities. All samples will be analyzed for organochorine pesticides by EPA Test Method 8081A. Once theimpacted soil has been removed and all verification samples confirm no further removal is necessary, the removed soil will be properly stockpiled in a designated area and/or placed directly into a excavation area designed for impacted soil placement. The excavation will be expended to the size necessary for placement of the impacted soil and required clean fill cap. Sheet 3 of bHA (2017) shows the location where the impacted soil will be placed on the property. An as-built map will be prepared indicating the locations and depth of impacted soil placed on the property and included in a final closure report. CLEANUP GOALS The cleanup goal for the subject site is to excavate all toxaphene impacted soil in excess of residential land use RSLs (0.49 mg/kg) and place the impacted soil under the proposed Yada Place (street), and cover with a minimum of 7 feet (in right of way) and 10 feet (under Yada Place) of non-contaminated soil/fill. As previous soil analysis indicate soil at the 1- to 2-foot interval was found to have OCP concentration below RSLs, therefore, the excavation will extend to a depth of 2 feet across the entire site, to reach the non-contaminated material. California West Communities W.O. E7377-SC 1835 Buena Vista Way, Carlsbad January 5, 2018 FiIe:wp12\E73000\E7377.pmp GeoSoils, Inc. Page 7 Monitoring Program While handling the toxaphene impacted soil during excavation, stockpiling, and backfilling operations, a monitoring program will be in place to control impacted soil migration offsite via aerial suspension, stormwater run-off, or attachment to equipment leaving the property. GSl proposes to utilize the following controls to minimize the spread of toxaphene offsite: During excavation and stockpiling activities, copious amounts of water must be applied to the soil prior to and during grading in order to suppress dust particles from becoming air-borne. Additionally, toxaphene impacted soil must not be disturbed if winds exceed about 13 miles per hour (mph). All stockpiled soils must be covered with heavy grade plastic sheets while water suppression is not employed, particularly during non-working hours. To reduce worker exposure to contaminated dust, all heavy equipment should have closed cabs with positive pressure fans. If open air cabs are used, the full face respirators with NIOSH N100, R100, or P100 filter cartridges should be used. To ensure that impacted soil is not carried offsite, all vehicles and equipment should be inspected prior to exiting the site. If significant amounts of soil are trapped within the tires or under-carriage of vehicles, the soil should be removed prior to the vehicle exiting the site. During and at the end of each day any soil deposited outside the exit of the site, will be swept up and returned to the property for onsite management. If site development is required during rainy periods, care should be taken to minimize the negative effects. The City may recommend that no work be conducted when the potential for rain is above 40 percent. Educated judgment should be used to assess the significance of potential rainfall event and how it might affect the remedial grading activities. If a significant rainfall event is anticipated or occurs during construction operations, necessary measures must be taken to minimize erosion of stockpiles and limit soil erosion from offsite migration. A Storm Water Pollution Prevention Plan (SWPPP) should be prepared for the site. In addition to actions taken to mitigate the spread of toxaphene to the surrounding neighborhood, the following controls should be in place to ensure community safety and compliance with City ordinances: The site will be fenced and gated, limiting access to only those authorized. Equipment operations times will be dictated by the City of Carlsbad Zoning Ordinances. Except to the west, the site is mostly surrounded by residential neighborhoods. It is anticipated that noise may be an issue which will require some level of cooperation between the developer and the surrounding neighborhoods. California West Communities W.O. E7377-SC 1835 Buena Vista Way, Carlsbad January 5, 2018 File:wp12\E73000\E7377. pmp GeoSoils, Inc. Page 8 Given the size of the excavations, they will need to remain open over-night. Proper safety will need to be in place, such as safe side slope and at least one open end to easy access into and out of the excavation. Efforts should be in place to backfill excavations as soon as possible after completion. If not backfilled, excavations for the entire site should be fenced off to prevent public access at the end of each work day. As an added level of verification following the complefion of remedial activities and site grading, representative soil samples will be collected from 3 random locations throughout the site. Soil samples will be collected from the shallow subsurface at depths of 0 to 3 feet below ground surface below the designed finished grade and analyzed for residual pesticides using EPA Test Methods 8081A. Verification sample results from the surface will be used to evaluate that no pesticides impact above site cleanup levels exist within the fill to be in contact with occupants and construction workers. Final Remediation Summary Report Upon completion of the remedial site grading a summary report will be prepared to document all activities completed onsite. This report will provide a description of how the excavation was completed to remove the toxaphe'ne impact to soil above the site cleanup levels. A map showing the locations of removal verification samples and any re-testing required will be attached to this report. Table and hard copies of all analysis will be included used to evaluate removal to the cleanup levels. To document where impacted soils exist an "As-Built" map will be included in this report with elevations. This map will provide documentation that the impacted soil cap is at least 10 and 7 feet in thickness over impacted soil above the site cleanup level, for street right-of-ways and residential areas, respectively. Included in the report will be any additional cross sections and text necessary to document the removal and placement was in accordance with the approved PMP, as warranted. COMMUNITY HEALTH AND SAFETY PLAN A site specific Community Health and Safety Plan has been prepared for this project and is attached in Appendix C. The area surrounding the subject site is an active urban environment. Traffic and associated site access controls will need to be enforced. It is anticipated that the site will be fenced and access will be limited to authorized personnel only. Based on the contaminants of concern identified at the site, the primary health and safety issue associated with the planned remedial excavation activities under this PMP will be proper control of dust during site grading activities. California West Communities W.O. E7377-SC 1835 Buena Vista Way, Carlsbad January 5, 2018 Fi1e:wp12\E73000\E7377.pmp GeoSoils, Inc. Page 9 The Community Health and Safety Plan provides guidance for the handling of known and unknown hazards that may be encountered at the site, as well as provide guidance for a safe work environment for the public by: Reducing community exposures to potential hazards and nuisances caused by site work; Promoting community awareness of the proposed remediation project; and, Monitoring and mitigation potential public hazards and nuisances caused by the site work that may migrate ofsite including dust and noise. SITE SPECIFIC HEALTH AND SAFETY PLAN A Site Specific Health and Safety Plan has been prepared for this project and is also attached in Appendix D. The Health and Safety Plan is to be followed by all GSI employees and subcontractors during the remedial excavation process. It is the intent of the Health and Safety Plan to address risks associated with The site, surrounding area, and proposed activities. The health and safety guidelines in this plan were prepared specifically for this site, it's conditions, and it's purposes and may be amended if conditions change. Prior to commencing work each day, a Daily Safety Meeting will be performed with all employees and subcontractors. The purpose of the meeting will be to inform all employees and subcontractors of proper working procedures, site specific hazards, and emergency procedures. All workers must acknowledge that the Health and Safety Plan was reviewed prior to commencement of daily activities. The Site Specific Health and Safety Plan must be available fr review by all employees and subcontractors at the job location at all times. California West Communities W.O. E7377-SC 1835 Buena Vista Way, Carlsbad January 5, 2018 FUe:wp12\E73000\E7377.pmp GeoSoils, Inc. Page 10 LIMITATIONS GSI has performed the services for this project in accordance with the terms of a specific scope in a contract between GSI and Client, and in general accordance with current professional standards for investigations of this type. The conclusions presented in this report are based on the information collected during the study, the present understanding of the site conditions, and professional judgment. Please note, subsurface and hazardous waste/toxic substance conditions may vary from those sampled by GSI. The interpretations and recommendations of GSI are based solely on such information and/or information supplied by others. Findings of this assessment based on data provided by others carries no warranty, express or implied, as a result of the usage of such data. It is possible that future assessments may reveal additional data or variations of the current data which may require the current conclusions and recommendations to be reevaluated. As a result, GSI makes no warranty, either express or implied, as to its findings, opinions, recommendations, specifications, or professional advice except that they were promulgated after being prepared in accordance with generally accepted standards of care and diligence normally practiced by recognized consulting firms performing services of a similar nature. The information in this report is'relevant to the date of the site work and should not be relied on to represent conditions at any later date. Facts, conditions, and acceptable risk factors change with time, accordingly, this report should be viewed within this context. I' California West Communities W.O. E7377-SC 1835 Buena Vista Way, Carlsbad January 5, 2018 File:wpl2\E73000\E7377.pmp GeoSoils, Inc. Page 11 CLOSURE The opportunity to be of services is appreciated. If you should have any questions, please do not hesitate to contact the undersigned at (760) 438-3155. Respectfully submitted, GeoSoils, Inc. John P. Franklin Registered Environmental Property Assessor No. 461992, CEG 1340. CHG 532 CWP/JPF/jh Attachments: Appendix A - References Appendix B - Previous Analytical Data Reports Appendix C - Community Health and Safety Plan Appendix D - Site Specific Health and Safety Plan / Distribution: (1) Addressee (as a pdf via Geotracker website) (2) California West Communities, Attention: Mr. Matt Howe / California West Communities 1835 Buena Vista Way, Carlsbad File:wpl2\E73000\E7377.pmp GeoSoils, Inc. W.O. E7377-SC January 5, 2018 Page 12 / / / APPENDIX A REFERENCES GeoSoils, Inc. APPENDIX A REFERENCES bHA, Inc., 2017, Grading Plans for: Yada Family Farms Subdivision, 1835 Buena Vista Way, Carlsbad, Ca. 92008, CT 15-11, 6 Sheets, 50-scale, dated November 6. 2016, Tentative Map for Yada Family Subdivision, Carlsbad, CA, CT 15-11, 3 sheets, 30-scale, W.O. 993-1289-400, dated August 8. 2015, Conceptual Lot Study, Yada Family Trust, 1835 Buena Vista Way, Carlsbad, Ca. 92008, 30-scale, not dated. California Regional Water Quality Control Board, 1994, Water Quality Control Plan for the San Diego Basin (9), dated September 8. California Stormwater Quality Association (CASQA), 2003, Stormwater best management practice handbook, new development and redevelopment, dated January. County of San Diego, Department of Planning and Land Use, 2007, Low impact development (LID) handbook, stormwater management strategies, dated December 31. Environmental Protection Age-icy, 2017, Regional Screening Levels (RSL) SummaryTable (TR= 1 E-06, HQ= 1), https://semspub.epa.gov/work/03/2245059.pdf , dated June GeoSoils, Inc., 2015, Phase environmental site assessment and limited phase ii soil evaluation, APN 156-220-01-00, 1835 Buena Vista Way, Carlsbad, San Diego County, California, W.O. E6927-SC, dated August 19. 2015, Preliminary geotechnical investigation, proposed 14-lot subdivision, 4.14 Acres, 1835 Buena Vista Way, APN 156-220-01, Carlsbad, San Diego County, California, W.O. 6927-,4-SC, date August 3. Kennedy, M.P, and Tan, S.S, 2005, Geologic map of the Oceanside 30' x 60' quadrangle, California, United States Geological Survey. Tan, S.S., and Kennedy, M.P., 1996, Geologic maps of the northwestern part of San Diego County, California: California Division of Mines and Geology, Open File Report 96-02. 1999, San Luis Rey quadrangle, San Diego County, California, 7.5 minute series, 1:24,000 scale. GeoSoils, Inc. United States Department of Agriculture, Natural Resources Conservation Service, 2014, Web Soil Survey, http://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx, accessed January 2. Woodward-Clyde Consultants, 1991, Results of Groundwater Monitoring, Seconds Quarter 1991, Shell Oil Company Service Station, 1145 Elm Avenue, Carlsbad, California, P.N. 8853069B-F102, dated July 22. / "S N 5" California West West Appendix A Fi1e:wp12\E7300\E7377.pmp GeoSoils, Inc. Page 2 APPENDIX B PREVIOUS ANALYTICAL DATA REPORTS GeoSoils, Inc. eu rof ins N WORK ORDER NUMBER: 15-07-0557 Ii The difference is service AIR I SOIL I WATER I MARINE CHEMISTRY Analytical Report For Client: GeoSoils, Inc. Client Project Name: Yada Family Trust Attention: John Franklin 5741 Palmer Way Carlsbad, CA 92010-7248 Approved for release on 07/17/2015 by: Terri Chang ResuitLink ll, Project Manager ,cco Email your PM Eurofins Calscience, Inc. (Calscience) certifies that the test results provided in this report meet all NELAC requirements for parameters for which accreditation is required or available. Any exceptions to NELAC requirements are noted in the case narrative. The original report of subcontracted analyses, if any, is attached to this report. The results in this report are limited to the sample(s) tested and any reproduction thereof must be made in its entirety. The client or recipient of this report is specifically prohibited from making material changes to said report and, to the extent that such changes are made, Caiscience is not responsible, legally or otherwise. The client or recipient agrees to indemnify Calscience for any defense to any litigation which may arise. :j9 7,Ul (IA ELAP ID: 2944 1 ACLASS DoD-ELAP ID ADE-1864 (fSOIIEC 11025.2005) 1 CSDLAC ID 10109 Page 2 of 29 • Øeurofins Caiscience Contents • Client Project Name: Yada Family Trust Work Order Number: 15-07-0557 1 Work Order Narrative ...... ............................................. 3 • 2 Client Sample Data ..................................................... 4 • 2.1 EPA 8O15BGRO(Solid) ................................................ 4 • 2.2 EPA 6010B ICP Metals (Solid)........................................5 • 2.3 EPA 8081A Organochlorine Pesticides (Solid).............................6 • 2.4 EPA 8260B Volatile Organics (Solid).....................................12 • 3 Quality Control Sample Data ...............................................16 • 3.1 MS/MSD........................................................16 • 3.2 LCS/LCSD ............ . .......................... .. ................. 20 • 4 Sample Analysis Summary..............................................24 • 5 Glossary of Terms and Qualifiers..........................................25 • • 6 Chain-of-Custody/Sample Receipt Form................................... 26 • • • • • • • • • • • • • • • • 0 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 3of29 eurofins Work Order Narrative S Caiscience Work Order: 15-07-0557 Page 1 of 1 Condition Upon Receipt: Samples were received under Chain-of-Custody (COC) on 07/09/15. They were assigned to Work Order 15-07-0557. Unless otherwise noted on the Sample Receiving forms all samples were received in good condition and within the recommended EPA temperature criteria for the methods noted on the COC. The COC and Sample Receiving Documents are integral elements of the analytical report and are presented at the back of the report. Holding Times: All samples were analyzed within prescribed holding times (HT) and/or in accordance with the Calscience Sample Acceptance Policy unless otherwise noted in the analytical report and/or comprehensive case narrative, if required. Any parameter identified in 40CFR Part 136.3 Table II that is designated as analyze immediately with a holding time of <= 15 minutes (40CFR-136.3 Table II, footnote 4), is considered a field test and the reported results will be qualified as being received outside of the stated holding time unless received at the laboratory within 15 minutes of the collection time. Quality Control: All quality control parameters (QC) were within established control limits except where noted in the QC summary forms or J described further within this report. . Subcontractor Information: Unless otherwise noted below (or on the subcontract form), no samples were subcontracted. Additional Comments: Air - Sorbent-extracted air methods (EPA TO-4A, EPA TO-b, EPA TO-13A, EPA TO-17): Analytical results are converted from S mass/sample basis to mass/volume basis using client-supplied air volumes. S Solid - Unless otherwise indicated, solid sample data is reported on a wet weight basis, not corrected for % moisture. All QC results are always reported on a wet weight basis. ' S S S . S S I S S S S S S 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 S Page 4 of 29 .,.> euro IflS Analytical Report Calscience • GeoSoils, Inc. Date Received: 07/09/15 • 5741 Palmer Way Work Order: 15-07-0557 • Carlsbad, CA 92010-7248 Preparation: EPA 5030C Method: EPA 8015B • Units: mg/kg • Project: Yada Family Trust Page 1 of 1 Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID Number Collected Prepared Analyzed and B-8-0.5) 15-07-0557-25-A 07/09/15 Solid GC 56 07/14/15 07/14/15 150714L047 P~~ 00:00 ------ 20:47 ----- -- Parameter Result RL QE Qualifiers Gasoline Range Organics ND 0.49 1.00 Surrogate Rec. (%) Control Limits Qualifiers 1 ,4-Bromofluorobenzene 72 42-126 . [Method Blank 099-12-024-890 N/A Solid GC 56 07/14/15 07/14/15 150714L047 19:44 Parameter Result RL DF Qualifiers Gasoline Range Organics ND 0.50 1.00 '11k Surrogate Rec. (%') Control Limits Qualifiers / S 1,4-Bromofluorobenzene 71 42-126 0 • • • • • • . • • • . • S S S S RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 5of29 0 eurofins Analytical Report Caiscience S . GeoSoils, Inc. Date Received: 5741 Palmer Way Work Order: Carlsbad, CA 92010-7248 Preparation: Method: Units: \ / Project: Yada Family Trust Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time Number Collected Prepared Analyzed COMP(B-1-0.5 and B-8-0.5) 15-07-0557-25-A 07/09/15 Solid ICP 8300 07/14/15 07/15/15 00:00 20:07 07/09/155 15070557. EPA 3050B EPA 6010B mg/kg• Page lofi QC Batch ID • 150714L05 Parameter Result RL DF Qualifiers Arsenic 2.94 0.732 0.976 ~rOMP(13-2-0.5 and B-3-0.5) 15-07-0557-26-A 07/08/15 00:00 Solid ICP 8300 07/14115 07/15/15 150714L05 20:09 Parameter Result RL DF Qualifiers 5 Arsenic 3.64 0.725 0.966 ~1OW(13-4-0.5 and B-5-0.5) 15-07-0557-27-A 07/08/15 Solid ICP 8300 07/14/15 07/15/15 150714L05 • 00:00 20:11 Parameter Result RL DF Qualifiers J Arsenic 2.86 0.721 0.962 ç COMP(B-6-0.5 and B-7-0.5) 15-07-0557-28-A 07/09/15 Solid ICP 8300 07/14/15 07/15/15 150714L05 00:00 -- 20:13 Parameter Result RL DF Qualifiers 5 Arsenic 3.82 \ 0.714 0.952 -S Method Blank 097-01-002-21411 N/A Solid ICP 8300 07/14/15 07/16/15 150714L05 11:59 -. S Parameter Result RL DF Qualifiers 5 Arsenic . ND ' 0.750 1.00 S S S S S S S S RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 S Page 6 of 29 • 0 eurofins I Analytical Report Caiscience • GeoSoils, Inc. Date Received: 07/09/15 • 5741 Palmer Way Work Order: 15-07-0557 • Carlsbad, CA 92010-7248 Preparation: EPA 3545 Method: EPA 8081A • Units: ug/kg • Project: Yada Family Trust Page 1 of 6 Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID • Number Collected - Prepared Analyzed COMP(B-1-0.5 and B-8-0.5) 15-07-0557-25-A 07/09/15 Solid GC 44 07/13/15 07/16/15 150713L09 00:00 10:25 Parameter Result RL DF Qualifiers Aldrin ND 5.0 1.00 Alpha-BHC ND 9.9 1.00 Beta-BHC ND 5.0 1.00 • Chlordane ND 50 1.00 4,4-DDD ND 5.0 1.00 Delta-BHC ND 9.9 1.00 Dieldrin ND 5.0 1.00 I ND 5.0 1.00 • Endosulfan Endosulfan II ND 5.0 1.00 Endosulfan Sulfate ND 5.0 1.00 Endrin ND 5.0 1.00 Endrin Aldehyde ND 5.0 1.00 Endrin Ketone . ND 5.0 1.00 Gamma-BHC ND 5.0 1.00 • Heptachlor ND 5.0 1.00 Heptachlor Epoxide ND 9.9 1.00 • Methoxychlor ND 5.0 1.00 • Toxaphene 1600 99 1.00 N Surrogate Rec. (%) Control Limits Qualifiers • Decachlorobiphenyl 106 24-168 2,4,5,6-Tetrachloro-m-Xylene 68 25-145 S COMP(B-1-0.5 and B-8-0.5) 15-07-0557-25-A 07/09/15 Solid GC 44 07/13/15 07/16/15 1507131-09 00:00 11:22 5 Parameter Result RL DF Qualifiers 5 4,4-DDT 270 50 10.0 5 Surrogate Rec. (% Control Limits Qualifiers 5 Decachlorobiphenyl 114 24-168 2,4,5,6-Tetrachloro-m-Xylene 79 25-145 • • • • RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 7of29 S .% ..> euro lflS Analytical Report Catscience GeoSoils, Inc. Date Received: 07/09/150 5741 Palmer Way Work Order: 15070557. Carlsbad, CA 92010-7248 Preparation: EPA 3545 Method: EPA 8081 A• Units: ug/kgS Project: Yada Family Trust Page 2 of 6 S Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID Number Collected Prepared Analyzed COMP(B-1-0.5 and 8-8-0.5) 15-07-0557-25-A 07/09/15 Solid GC 44 07/13/15 07/16/15 150713L09 00:00 11:36 Parameter Result RL DF Qualifiers 4,4-DDE 520 250 50.0 / N Surrogate Rec. (%) Control Limits Qualifiers Decachlorobiphenyl 139 24-168 5 2,4,5,6-Tetrachloro-m-Xylene 91 25-145 2 COMP(B-2-0.5 and B-3-0.5) 15-07-0557-26-A 07/08/15 - Solid CC 44 07/13/15 07/16/15 150713L09 00:00 - - 10:39 Parameter Result RL DF Qualifiers Aldrin ND 4.9 1.00 Alpha-BHC ND 9.9 -. 1.00 Beta-BHC ND 4.9 1.00 WC Chlordane ND 49 1.00 4,4'-DDD .- ND 4.9 1.00 Delta-BHC // ND 9.9 1.00 5 Dieldrin ND 4.9 1.00 • Endosulfan I ND 4.9 1.00 Endosulfan II ND 4.9 1.00 5 Endosulfan Sulfate ND 4.9 1.00 5 Endrin ND 4.9 1.00 Endrin Aldehyde ND 4.9 1.00 Endrin Ketone ND 4.9 1.00 5 Gamma-BHC .ND 4.9 1.00 Heptachlor ' ND 4.9 1.00 Heptachlor Epoxide ND 9.9 1.00 Methoxychior ND 4.9 1.00 5 Toxaphene - 1500 99 1.00 . Surrogate Rec. (%) Control Limits Qualifiers S Decachlorobiphenyl 101 24-168 • 2,4,5,6-Tetrachloro-m-Xylene 73 25-145 S S S S RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 S Page 8 of 29 - . .,.> euro4: IflS Analytical Report Caiscience • GeoSoils, Inc. Date Received: 07/09/15 • 5741 Palmer Way Work Order: 15-07-0557 • Carlsbad, CA 92010-7248 . Preparation: EPA 3545 Method: EPA 8081A • Units: ug/kg • Project: Yada Family Trust Page 3 of 6 Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID Number Collected Prepared Analyzed COMP(B-2-0.5 and B-3-0.5) 15-07-0557-26-A 07/08/15 Solid GC 44 07/13/15 07/16/15 150713L09 • 00:00 11:51 • Parameter Result RL DF Qualifiers 4,4-DDE 290 99 20.0 4,4'-DDT 200 99 20.0 Rec. (%) Control Limits Qualifiers •Surrogate Decachlorobiphenyl 105 24-168 • 2,4,5,6-Tetrachloro-m-Xylene . 73 25-145 • and B-5-0.5) 15-07-0557-27-A 07/08/15 Solid GC 44 07/13/15 07/16/15 15071311-09 • 1COMP(B-4-0.5 00:00 104 Result RL DF Qualifiers •Parameter Aldrin ND 5.0 1.00 • Alpha-BHC ND // 10 1.00 • Beta-BHC ND 5.0 1.00 Chlordane ND 50 1.00 • 4,4-DOD ND 5.0 1.00 Delta-BHC ND 10 1.00 •Dieldrin ND 5.0 1.00 Endosulfan I ND 5.0 1.00 Endosulfan II ND 5.0 1.00 Endosulfan Sulfate ND 5.0 1.00 Endrin ' ND 5.0 1.00 Endrin Aldehyde ND 5.0 1.00 Endrin Ketone ND 5.0 1.00 O Gamma-BHC ND 5.0 1.00 Heptachlor ND 5.0 1.00 Heptachlor Epoxide ND 10 1.00 Methoxychlor .. ND 5.0 1.00 Toxaphene 840 100 1.00 Surrogate Rec. (%) Control Limits Qualifiers 98 24-168 •Decachlorobiphenyl 2,4,5,6-Tetrachloro-m-Xylene 80 25-145 • • RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 9of29 00 ..> euro.c IflS Analytical Report Caiscience GeoSoils, Inc. Date Received: 07/09/150 5741 Palmer Way Work Order: 15070557. Carlsbad, CA 92010-7248 Preparation: EPA 3545 Method: EPA 8081A Units: ug/kg• Project: Yada Family Trust / Page 4 of 6 • Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID Number Collected Precared Analyzed - COMP(B-4-0.5 and B-5-0.5) 15-07-0557-27-A 07/08/15 00:00 Solid GC 44 07/13/15 07/16/15 1507131-09 12:05 Parameter Result RL DF Qualifiers 4,4-DDE 210 50 10.0 4,4-DDT 130 50 10.0 Surrogate Rec. (%) Control Limits Qualifiers Decachlorobiphenyl 101 24-168 2,4,5,6-Tetrachloro-m-Xylene 82 // 25-145 - / COMP(B-6-O.5 and B-7-O.5) 15-07-0557-28-A 07/09/15 Solid GC 44 07/13/1507/16/15 150713L09 00:00 11:08 Parameter Result RL DF Qualifiers Aldrin Alpha-BHC ND ND 5.0 9.9 1.00 1.00 Beta-BHC ND 5.0 1.00 Chlordane / ND 50 1.00 4,4-DDD / ND 5.0 too Delta-BHC / ND 1.00 Dieldrin '. ND 5.0 1.00 Endosulfan I ND 5.0 1.00 Endosulfan II ND .. 5:0 1.00 Endosulfan Sulfate ND 5.0 1.00 Endrin '. ND ,/ 5.0 1.00 Endrin Aldehyde . N. ND/ 5.0 1.00 Endrin Ketone 4,ND 5.0. 1.00 Gamma-BHC - <' ND 5.0 1.00 Heptachlor . ND 5.0 1.00 Heptachlor Epoxide ND 9.9 1.00 Methoxychlor ND 5.0 1.00 Toxaphene 1500 99 1.00 Surrogate Rec. (%) Control Limits Qualifiers oecachlorobiphenyl 100 24-168 2,4,5,6-Tetrachloro-m-Xylene 69 25-145 S S S RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 S Page 10 of 29 eurofins Analytical Report Caiscience GeoSoils, Inc. Date Received: 07/09/15 • 5741 Palmer Way Work Order: 15-07-0557 . Carlsbad, CA 92010-7248 Preparation: EPA 3545 Method: EPA 8081A • Units: ug/kg • Project: Yada Family Trust Page 5 of 6 Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID Number Collected Prepared Analyzed COMP(B-6-0.5 and B-7-0.5) 15-07-0557-28-A 07/09/15 Solid GC 44 07/13/15 07/16/15 150713L09 00:00 12:19 Parameter Result RL OF Qualifiers 4,4-DDT 260 50 10.0 Surrogate Rec. (%) Control Limits Qualifiers • Decachlorobiphenyl 118 24-168 2,4,5,6-Tetrachloro-m-Xylene 84 25-145 • and B-7-0.5) 15-07-0557-28-A 07/09/15 Solid GC 44 07/13/15 07/16/15 150713L09 [COMP(B-6-0.5 00:00 12:33 Parameter Result RL OF Qualifiers 4,4-DDE 460 250 50.0 Surrogate I" Rec. (% Control Limits Qualifiers • Decachlorobiphenyl 133 24-168 2,4,5,6-Tetrachloro-m-Xylene 89 25-145 • • • • • • • • • • • • RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 • 0 eurofins Caiscience Analytical Report Page llof29 . GeoSoils, Inc. Date Received: 5741 Palmer Way Work Order: Carlsbad, CA 92010-7248 Preparation: Method: Units: Project: Yada Family Trust / 07/09/1510 15070557. EPA 3545 EPA 8081A ug/kg• Page 6of6 • Client Sample Number Method Blank Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID Number Collected Prepared Analyzed 099-12-537-2159 N/A Solid GC 44 07/13/15 07/16/15 150713L09 09:42 - Parameter Result RL DF Qualifiers Aidrin ND 5.0 1.00 Alpha-BHC ND 10< 1.00 Beta-BHC ND 5.0 1.00 Chlordane ND 50 1.00 4,4-DDD ND . 5.0 1.00 4,4-DDE ND ' 5.0 1.00 44-DDT ND 5.0 1.00 Delta-BHC ND 10 1.00 Dieldrin ND 5.0 1.00 Endosulfan I ND 5.0 1.00 Endosulfan II ND 5.0 1.00 Endosulfan Sulfate . ND 5.0 1.00 Endrin 'ND 5.0 1.00 C Endrin Aldehyde / ND 5.0 1.00 Endrin Ketone ND . 5.0, 1.00 Gamma-BHC ND 5.0 1.00 Heptachlor ND 5.0 1.00 Heptachlor Epoxide ND 10 1.00 Methoxychlor ND - 5.0 1.00 Toxaphene ND 100 1.00 Surrogate Rec. (%) Control Limits Qualifiers Decachlorobiphenyl <82 24-168 2,4,5,6-Tetrachloro-m-Xylene 80 25-145 . RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 12 of 29 • :.> eurof ins Analytical Report Caiscience • GeoSoils, Inc. Date Received: 07/09/15 • 5741 Palmer Way Work Order: 15-07-0557 • Carlsbad, CA 92010-7248 Preparation: EPA 5030C Method: EPA 8260B • Units: ug/kg • Project: Yada Family Trust Page 1 of 4 Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID Number Collected Prepared Analyzed COMP(B-4-0.5 and B-5-0.5) 15-07-0557-27-A 07/08/15 Solid GC/MS 0 07110/15 07/15/15 150714L034 00:00 04:30 - Parameter Result RL DIF Qualifiers Acetone ND 120 1.00 Benzene ND 5.0 1.00 Bromobenzene ND 5.0 1.00 •Bromochloromethane ND 5.0 1.00 Bromodichloromethane ND 5.0 1.00 Bromoform ND 5.0 1.00 Bromomethane ND 25 1.00 ND 50 1.00 .2-Butanone n-Butylbenzene ND 5.0 1.00 • sec-Butylbenzene ND 5.0 1.00 • tert-Butylbenzene 7 ND 5.0 1.00 Carbon Disulfide ND 50 1.00 Carbon Tetrachloride ND 5.0 1.00 Chlorobenzene ND 5.0 1.00 •Chloroethane ND 5.0 1.00 Chloroform ND 5.0 1.00 Chloromethane ND 25 1.00 • 2-Chlorotoluene ND 5.0 1.00 4-Chlorotoluene ND 5.0 1.00 Dibromochioromethane ND 5.0 1.00 1,2-Dibromo-3-Chloropropane ND 9.9 1.00 •1,2-Dibromoethane ND 5.0 1.00 Dibromomethane ND 5.0 1.00 1,2-Dichlorobenzene ND 5.0 1.00 1,3-Dichlorobenzene ND 5.0 1.00 1,4-Dichlorobenzene ND 5.0 1.00 Dichlorodifluoromethane ND 5.0 1.00 1,1-Dichioroethane ND 5.0 1.00 • 1,2-Dichloroethane ND 5.0 1.00 1,1-Dichioroethene ND 5.0 1.00 c-1,2-Dichloroethene ND 5.0 1.00 t-1,2-Dichloroethene ND 5.0 1.00 ND 5.0 1.00 •1,2-Dichloropropane 1,3-Dichloropropane ND 5.0 1.00 • 2,2-Dichloropropane ND 5.0 1.00 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 13of29 eurof ins Anay1icaI Report Caiscience GeoSoils, Inc. Date Received: 07/09/15 5741 Palmer Way Work Order: 15070557. Carlsbad, CA 92010-7248 Preparation: EPA 5030C Method: EPA 8260B Units: ug/kg Project: Yada Family Trust 1' Page 2 of 4 Parameter Result RL DF Qualifiers 1,1-Dichloropropene ND: 5.0 1.00 c-1,3-Dichloropropene ND 5.0 1.00 t-1,3-Dichloropropene ND 5.0 1.00 Ethylbenzene ND: 5.0 1.00 2-Hexanone ND 50 1.00 lsopropylbenzene ND 5.0 1.00 p-lsopropyltoluene ND 5.0 1.00 Methylene Chloride ND 50 1.00 .; 4-Methyl-2-Pentanone ND // 50 1.00 Naphthalene ND / 50 1.00 n-Propylbenzene ND : 5.0 1.00 Styrene ND 5.0 1.00- 1,1,1,2-Tetrachioroethane ND 5.0 1.00 1,1,2,2-Tetrachloroethane . - ND . 5.0 1.00 Tetrachioroethene ND 5.0 1.00 Toluene ND 5.0 1.00 1,2,3-Trichlorobenzene ND 9.9 1.00 1,2,4-Trichlorobenzene -. ND 5.0 1.00 1,1,1-Trichioroethane " ND 5.0 1.00 1,1,2-Trichioroethane ND 5.0 1.00 1,1,2-Trichloro-1,2,2-Trifluoroethane NC 50 1.00 Trichloroethene NC' 5.0 41 1.00 1,2,3-Trichioropropane - NC 5.0 1.00 1,2,4:Tri methyl benzene NC 5.0 1.00 Trichlorofluoromethane ND 50 1.00 1,3,5-Trimethylbenzene <ND 5.0 1.00 Vinyl Acetate ND 50 1.00 Vinyl Chloride ND 5.0 1.00 plm-Xylene ND 5.0 1.00 o-Xylene NC 5.0 1.00 Methyl-t-Butyl Ether (MTBE) NC 5.0 1.00 Surrogate Re. (%) Control Limits Qualifiers 1,4-Bromofluorobenzene 83 60-132 Dibromofluoromethane 112 63-141 1 ,2-Dichloroethane-d4 111 62-146 Toluene-d8 bC' 80-120 RL: Reporting Limit. DF: Dilution Factor. MDL Meliod Detection Limit. 7440 Lincoln Way, Garden Grov, 04 9284 -1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 14of29 • ,.> eurofins Analytical Report Caiscience S • GeoSoils, Inc. Date Received: 07/09/15 O 5741 Palmer Way Work Order: 15-07-0557 . Carlsbad, CA 92010-7248 Preparation: EPA 5030C Method: EPA 8260B • Units: ug/kg • Project: Yada Family Trust Page 3 of 4 Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID 5 Number Collected Prepared Analyzed - - Method Blank 099-12-796-9939 N/A Solid GC/MS 0 07/14/15 07/14/15 150714L034 • 23:14 5 Parameter Result AL DF Qualifiers Acetone .- ND 120 1.00 S Benzene ND 5.0 1.00 5 Bromobenzene ND 5.0 1.00 • Bromochloromethane ND 5.0 1.00 Bromodichloromethane ND 5.0 1.00 Bromoform ND 5.0 1.00 5 Bromomethane ND 25 . 1.00 ND 50 1.00 • 2-Butanone n-Butylbenzene ND 5.0 1.00 5 sec-Butylbenzene ND 5.0 1.00 • tert-Butylbenzene / ND 5.0 1.00 Carbon Disulfide ND 50 1.00 Carbon Tetrachloride ND 5.0 1.00 5 Chlorobenzene ND 5.0 1.00 • Chloroethane ND 5.0 1.00 Chloroform ND 5.0 1.00 5 Chloromethane ND 25 1.00 5 2-Chlorotoluene ND 5.0 1.00 4-Chlorotoluene ND 5.0 1.00 Dibromochloromethane ND 5.0 1.00 5 1,2-Dibromo-3-Chloropropane ND 10 1.00 • 1,2-Dibromoethane ND 5.0 1.00 Dibromomethane .,. ND 5.0 1.00 5 1,2-Dichlorobenzene / ND 5.0 1.00 5 1 ,3-Dichlorobenzene ND 5.0 1.00 1,4-Dichlorobenzene ND 5.0 1.00 S Dichlorodifluoromethane ND 5.0 1.00 5 1,1-Dichloroethane ND 5.0 1.00 • 1,2-Dichloroethane ND 5.0 1.00 1,1-Dichloroethene ND 5.0 1.00 5 c-1,2-Dichloroethene ND 5.0 1.00 5 t-1,2-Dichloroethene ND 5.0 1.00 ND 5.0 1.00 • 1,2-Dichloropropane 1 ,3-Dichloropropane ND 5.0 1.00 5 2,2-Dichloropropane ND 5.0 1.00 • RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 15of29 eurofins Analytical Report Calscience GeoSoils, Inc. Date Received: 07/09/15 5741 Palmer Way Work Order: 15070557. Carlsbad, CA 92010-7248 Preparation: EPA 5030C Method: EPA 8260B Units: ug/kgS Project: Yada Family Trust Page 4 of 4 Parameter Result RL DF Qualifiers 1,1-Dichloropropene ND 5.0 1.00 c-i ,3-Dichloroproperie ND 5.0 1.00 t-1,3-Dichloropropene ND 5.0 1.00 N Ethylbenzene ND 5.0 1.00 2-Hexanone ND 50 1 1.00 lsopropylbenzerie ND 5.0 1.00 p-lsopropyltoluene ND 5.0 1.00 Methylene Chloride ND 50 1.00 4-Methyl-2-Pentanone ND 50 1.00 - Naphthalene ND 50 1.00. n-Propylbenzene ND N. 5.0 1.00 Styrene ND 5.0 1.00 1,1,1,2-Tetrachloroethane ND 5.0 1.00 let 1,1,2,2-Tetrachloroetharie - ,ND - 5.0 1.00 Tetrachloroethene ND 5.0 1.00 Toluene ND 5.0 1.00 WEI 1,2,3-Trichio robe rizene . ND 10 1.00 . 1,2,4-Trichlo robe nzene ND \ 5.0 1.00 1,1,1-Trichioroethane ND 5.0 1.00 1,1,2-Trichloroethane ND 5.0 1.00 1,1 ,2-Trichloro-1 ,2,2-Trifluoroethane ND 50 1.00 Trichloroethene ND , 5.0 1.00 S 1 ,2,3-Trichloropropane ND 5.0 1.00 1,2,4-Tri methyl benzene ND 5.0 1.00 Trichlorofluoromethane ND 50 1.00 1,3,5-Tri methyl benzene ' ND 5.0 1.00 Vinyl Acetate ND 50 1.00 Vinyl Chloride ND 5.0 1.00 p/m-Xylene ND 5.0 1.00 5 o-Xylene ND 5.0 1.00 Methyl-t-Butyl Ether (MTBE) . ND 5.0 1.00 Surrogate Rec. (%) Control Limits Qualifiers 1,4-Bromofluorobenzene 92 60-132 Dibromofluoromethane 101 63-141 1 ,2-Dichloroethane-d4 97 62-146 Toluene-d8 98 80-120 RL: Reporting Limit. DF: Dilution Factor. MDL: Metiod Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 16 of 29 • eurof ins Quality Control - Spike/Spike Duplicate Caiscience • GeoSoils, Inc. Date Received: 07/09/15 • 5741 Palmer Way Work Order: 15-07-0557 O Carlsbad, CA 92010-7248 Preparation: EPA 5030C Method: EPA 8015B • Project: Yada Family Trust Page 1 of 4 • S • . Parameter Sample Spike fyj Conc. Added Conc. MS fyjQ Q %Rec. CL BE RPD CL Qualifiers %Rec. Conc. %Rec. Gasoline Range Organics ND 10.00 8.170 82 8.604 86 66-108 5 0-18 • • • / • • . ft I • S • • • • • • • RPD: Relative Percent Difference. CL: Control Limits 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 17of29 eurof ins Quality Control - Spike/Spike Duplicate Calscience S GeoSoils, Inc. Date Received: 07/09/15 40 5741 Palmer Way Work Order: 15070557. Carlsbad, CA 92010-7248 Preparation: EPA 3050B Method: EPA 6010B Project: Yada Family Trust Page 2 of 4 Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed MS/MSD Batch Number - S 15-07-0691-8 Sample Solid ICP 8300 07/14/15 07/17/15 12:32 150714S05 15-07-0691-8 Matrix Spike Solid ICP 8300 07/14/15 07/17/15 12:34 150714S05 15-07-0691-8 Matrix Spike Duplicate Solid ICP 8300 07/14/15 07/17/15 12:35 150714S05 Parameter Sample Spike MS MS MSD MQ %Rec. CL BEQ RPD CL Qualifiers Conc. Added Conc. %Rec. Conc. %Rec. Arsenic 4.585 25.00 35.98 126 29.51 100 75-125 20 0-20 3 S I . • / S S / / . S RPD: Relative Percent Difference. CL: Control Limits 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 18 of 29 • : eurof ins Quality Control - Spike/Spike Duplicate Calscience • GeoSoils, Inc. Date Received: 07/09/15 • 5741 Palmer Way Work Order: 15-07-0557 • Carlsbad, CA 92010-7248 Preparation: EPA 3545 Method: EPA 8081A • Project: Yada Family Trust Page 3 of 4 Parameter Sample Spike MS MS MSD MQ %Rec. CL RPD RPD CL Qualifiers Added Conc. %Rec. Conc. %Rec. Aldrin ND 25.00 20.91 84 20.35 81 50-135 3 0-25 Alpha-BHC ND 25.00 20.07 80 19.14 77 50-135 5 0-25 I Beta-BHC ND 25.00 26.04 104 25.25 101 50-135 3 0-25 4,4-DDD ND 25.00 42.40 170 43.16 173 50-135 2 0-25 3 . 4,4-DDE 456.4 25.00 819.8 1454 830.1 1495 50-135 1 0-25 3 4,4-DDT 265.0 25.00 316.9 208 305.0 160 50-135 4 0-25 3 I Delta-BHC ND 25.00 74.37 297 75.04 300 50-135 1 0-25 3 Dieldrin ND 25.00 42.74 171 49.64 199 50-135 15 0-25 3 I ND 25.00 30.70 123 30.64 123 50-135 0 0-25 •Endosulfan Endosulfan II ND 25.00 64.47 258 62.36 249 50-135 3 0-25 3 Endosulfan Sulfate ND 25.00 51.32 205 51.74 207 50-135 1 0-25 3 . Endrin ND 25.00 45.88 184 45.84 183 50-135 0 0-25 3 Endrin Aldehyde ND 25.00 98.93 396 96.61 386 50-135 2 0-25 3 Gamma-BHC ND 25.00 20.90 84 20.20 81 50-135 3 0-25 Heptachlor ND 25.00 22.99 92 22.40 90 50-135 3 0-25 Epoxide ND 25.00 26.16 105 26.44 106 50-135 1 0-25 •Heptachlor Methoxychlor ND 25.00 51.07 204 50.43 202 50-135 1 0-25 3 I • • • • • • / • • I I I RPD: Relative Percent Difference. CL: Control Limits 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 19of29 0 eurof ins Quality Control - Spike/Spike Duplicate Calscience GeoSoils, Inc. Date Received: 07/09/15 5741 Palmer Way Work Order: 15-07-0557 Carlsbad, CA 92010-7248 Preparation: EPA 5030C / N EPA 8260B Method: Project: Yada Family Trust Page 4 of 4 Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed MS/MSD Batch Number 15-07-0765-1 Sample Solid GUMS 07/14/15 07/15/15 00M6 150714S020 - 15-07-0765-1 Matrix Spike Solid GC/MS Q 07/14/15 07/15/15 05:22 150714S020 15-07-0765-1 - -- Matrix Spike Duplicate Solid GC/MS 0 07/14/15 07/15/1505:48 150714S020 Parameter Sample aRE2 MS MS MSD fyjQ %Rec. CL RPD RPD CL Qualifiers Conc. Added Conc. %Rec. Conc. %Rec. Benzene ND 50.00 41.28 83 41.56 83 61-127 1 0-20 Carbon Tetrachloride ND 50.00 42.66 85 42.73 85 51-135 0 0-29 Chlorobenzene ND 50.00 38.73 77 39.02 78 57-123 1 0-20 1,2-Dibromoethane ND 50.00 42.76 86 41.00 82 64-124 4 0-20 1,2-Dichlorobenzene ND 50.00 34.73 69 35.71 71 35-131 3 0-25 1,2-Dichloroethane ND 50.00 41.33 /83 41.53 83 80-120 0 0-20 1,1-Dichloroethene ND 50.00 39.80 80 40.65 81 47-143 2 0-25 Ethylbenzene ND 50.00 40.75 81 39.64 79 57-129 3 0-22 1 Toluene ND 50.00 42.46 85 42.72 85 63-123 1 0-20 Trichloroethene ND 50.00 45.81 92 46.13 92 44-158 1 0-20 Vinyl Chloride ND 50.00 40.21 80 40.06 80 49-139 0 0-47 p/m-Xylene ND 100.0 82.47 82 78.73 79 70-130 5 0-30 o-Xylene ND 50.00 39.57 79 37.66 75 70-130 5 0-30 Methyl-t-Butyl Ether (MTBE) ND 50.00 37.86 76 38.11 76 57-123 1 0-21 H - N S \ S S S S RPD: Relative Percent Difference. CL: Control Limits 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 20 of 29 • eurofins Qality Control - LCS Calscience I • GeoSoils, Inc. Date Received: 07/09/15 • 5741 Palmer Way Work Order: 15-07-0557 . Carlsbad, CA 92010-7248 Preparation: EPA 5030C Method: EPA 8015B • Project: Yada Family Trust Page 1 of 4 w Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed LCS Batch Number • 1099-12-024-890 - - -- LCS Solid GC 56 07/14/15 07/14/15 19:12 150714L047 Parameter SOikE Added Conc. Recovered LCS %Rec. %Rec. CL Qualifiers Gasoline Range Organics 10.0C 10.22 102 70-118 • • • • • • ft : Jr • • • • • • • • • • / S S • • • • S RPD: Relative Percent Difference. CL: Control Limits 7440 Lincoln Way, Garden Grove, CA92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 • Page 21 of 29 S 0 eurof ins Quality Control - LCS Calscience S GeoSoils, Inc. Date Received: 07/09/15 5741 Palmer Way Work Order: 15070557. Carlsbad, CA 92010-7248 Preparation: EPA 3050B Method: EPA 6010B Project: Yada Family Trust Page 2 of 4 5 Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed --L-CS-Batch--Number- 097 01002 21411 - LCS Solid ICP8300 07/14/15 07/16/15 12:01 1507141-05 - 5 Parameter Spike Added Conc. Recovered LCS %Rec. %Rec. CL Qualifiers 5 Arsenic 25.00 24.07 96 80-120 S . /• RPD: Relative Percent Difference. CL: Control Limits 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 S Page 22 of 29 • :> eurof ins Quality Control - LCS Caiscience I • GeoSoils, Inc. Date Received: 07/09/15 • 5741 Palmer Way Work Order: 15-07-0557 . Carlsbad, CA 92010-7248 Preparation: EPA 3545 Method: EPA 8081A • Project: Yada Family Trust Page 3 of 4 Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed LCS Batch Number • - - 1099-12-537-2159 LCS Solid GC 44 07/13/15 07/16/150928 150713L09 7771 Parameter Spike Added Conc. Recovered LCS %Rec. %Rec. CL ME CL Qualifiers I Aldrin 25.00 22.58 90 50-135 36-149 Alpha-BHC 25.00 22.81 91 50-135 36-149 I Beta-BHC 25.00 23.60 94 50-135 36-149 4,4-DDD 25.00 23.49 94 50-135 36-149 .4,4-DDE 25.00 23.88 96 50-135 36-149 4,4-DDT 25.00 24.06 96 50-135 36-149 I Delta-BHC 25.00 22.54 90 50-135 36-149 Dieldrin 25.00 25.02 100 50-135 36-149 Endosulfan I 25.00 24.44 98 50-135 36-149 Endosulfan II 25.00 24.14 97 50-135 36-149 Endosulfan Sulfate 25.00 23.56 94 50-135 36-149 . Endrin 25.00 25.59 102 50-135 36-149 Endrin Aldehyde 25.00 .' 18.90 76 50-135 36-149 Gamma-BHC 25.00 23.26 93 50-135 36-149 Heptachlor 25.00 25.11 100 50-135 36-149 E Epoxide 25.00 24.02 96 50-135 36-149 .Heptachlor Methoxychlor 25.00 23.40 94 50-135 36-149 • / Total number of LCS compounds: 17 Total number of ME compounds: 0 Total number of ME compounds allowed: 1 LCS ME CL validation result: Pass • • • • S • . • • S S RPD: Relative Percent Difference. CL: Control Limits 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 0 Page 23 of 29 S eurof ins Quality Control - LCS Calscience GeoSoils, Inc. Date Received: 07/09/15 10 5741 Palmer Way Work Order: 15070557. Carlsbad, CA 92010-7248 Preparation: / EPA 5030C EPA 826OB• Method: Project: Yada Family Trust Page 4 of 4 Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed LCS Batch Number 099 127969939 LCS - Solid - GC/MS 0 07/14/15 07/14/152217 150714L034 - - Parameter Spike Added Conc. Recovered LCS %Rec. %Rec. CL ME CL Qualifiers 5 Benzene 50.00 49.72 99 78-120 71-127 Carbon Tetrachloride 50.00 49.08 98 49-139 34-154 chlorobenzene 50.00 48.48 97 79-120 72-127 1,2-Dibromoethane 50.00 52.25 105 80-120 73-127 1,2-Dichlorobenzene 50.00 49.85 100 75-120 68-128 1,2-Dichloroethane 50.00 52.69 105 80-120 73-127 1,1-Dichloroethene 50.00 47.24 - 94 74-122 66-130 Ethylbenzene 50.00 50.24/ 100 76-120 69-127 / Toluene 50.00 51.98 104 77-120 70-127 Trichloroethene 50.00 52.03 104 80-120 73-127 Vinyl Chloride 50.00 48.28 97 68-122 59-131 p/m-Xylene 100.0 .100.1 100 75-125 67-133 o-Xylene 50.00 48.89 98 75-125 67-133 Methyl-t-Butyl Ether (MTBE) 50.00 51.75 103 77-120 70-127 E Total number of LCS compounds: 14 / 5 Total number of ME compounds: 0 Total number of ME compounds allowed: 1 5 LCS ME CL validation result: Pass S 5 / S S S S S S S RPD: Relative Percent Difference. CL: Control Limits 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 S Page 24 of 29 eurof ins Sample Analysis Summary Report Caiscience • Work Order: 15-07-0557 Page 1 of 1 Method Extraction Chemist ID Instrument Analytical Location EPA 6010B EPA 3050B 935 ICP 8300 . EPA 8015B EPA 5030C 933 GC 56 2 EPA 8081A EPA 3545 669 GC 44 EPA 8260B EPA 5030C 905 GC/MS 0 2 S • • S • • • • 4111 • • • S • • • • • • S • S • S • Location 1: 7440 Lincoln Way, Garden Grove, CA 92841 Location 2: 7445 Lampson Avenue, Garden Grove, CA 92841 7440 Lincoln Way, Garden Grove CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 S Page 25 of 29 eurof ins Glossary of Terms and Qualifiers Caiscience Work Order: 15-07-0557 Page 1 of 1 S Qualifiers Definition * See applicable analysis comment. Less than the indicated value. > Greater than the indicated value. 1 Surrogate compound recovery was out of control due to a required sample dilution. Therefore, the sample data was reported without furthers clarification. 2 Surrogate compound recovery was out of control due to matrix interference. The associated method blank surrogate spike compound was in control and, therefore, the sample data was reported without further clarification. 3 Recovery of the Matrix Spike (MS) or Matrix Spike Duplicate (MSD) compound was out of control due to suspected matrix interference. The associated LCS recovery was in control. 4 The MS/MSD RPD was out of control due to suspected matrix interference. 5 The PDS/PDSD or PES/PESD associated with this batch of samples was out of control due to suspected matrix interference. 6 Surrogate recovery below the acceptance limit. 7 Surrogate recovery above the acceptance limit. B Analyte was present in the associated method blank. BU - Sample holding analyzed after time expired. - N. BV Sample received after holding time expired. / Cl See case narrative. / F Concentration exceeds the calibration range. / N ET Sample was extracted past end of recommended max. holding time. HD The chromatographic pattern was inconsistent with the profile of the r&erence fuel standard. S. HDH The sample chromatographic pattern for TPH matches the chromatographic pattern of the specified standard but heavier hydrocarbons were also present (or detected). HDL The sample chromatographic pattern for TPH matches the chromatographic pattern of the specified standard but lighter hydrocarbons were also present (or detected). J Analyte was detected at a concentration below the reporting limit and above the laboratory method detection limit. Reported value is estimated. JA Analyte positively identified but quantitation is an estimate. ME LCS Recovery Percentage is within Marginal Exceedance (ME) Control Limit range (+1- 4 SD from the mean). ND Parameter not detected at the indicated reporting limit. 0 Spike recovery and RPD control limits do not apply resulting from the parameter concentration in the sample exceeding the spike S concentration by a factor of four or greater. SG The sample extract was subjected to Silica Gel treatment prior to analysis. X % Recovery and/or RPD out-of-range. 5 Z Analyte presence was not confirmed by second column or CC/MS analysis. Solid - Unless otherwise indicated, solid sample data is reported on a wet weight basis, not corrected for % moisture. All QC results are reported on a wet weight basis. . Any parameter identified in 40CFR Part 136.3 Table II that is designated as "analyze immediately" with a holding time of <= 15 minutes "field' (40CFR-136.3 Table II, footnote 4), is considered a test and the reported results will be qualified as being received outside of the stated holding time unless received at the laboratory within 15 minutes of the collection time. "J" A calculated total result (Example: Total Pesticides) is the summation of each component concentration and/or, if flags are reported, estimated concentration. Component concentrations showing not detected (ND) are summed into the calculated total result as zero concentrations. 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: 714) 895-5494 • FAX: (714) 894-7501 ..................e.e...................... r Caiscience Environmental Laboratories, inc. CHAIN OF CUSTODY RECORD 7440 Lincoln Way, Garden Grove, CA 92841-1427. (714) 895-5494 WO#/ LAB USE ONLY Date Other CA office locations: Concord and San Luis Obispo For courier service I sample drop off information, 15-01-0551 Page of___________________ contact saIescalscience.com or call us. LABORATORY CLIENT: CLIENT PROJECT NAME I NUMBER: P.O. NO.: J4-1L-- 1C1NP14 ADDRESS: 1 I, \ PROJECT CONTACT: f\fl =-C(Al4V1 SAMPLER(S): (PRINT) jLj i'C1) fl1A( CITY S ATE gp TEL: E1 IL- \ . REQUESTED ANALYSES - - - TURNAROUND TIME: [II SAME DAY [1124 HR [11148 HR 072 HR STANDARD [1]COELT EDF GLOBAL ID LOG CODE CO a SPECIAL INSTRUCTIONS: - - - I Uj cc 00 10 12 67 00 -. ° CD u 5 2: cU - c U) C14 cc (1) - - - U) a) 0) USE LAB SAMPLE ID SAMPLING 1ATRI) OF CONT. °- U- I- I- I- cü 8 > 0 w u) o c a- DATE TIME ON Y -7/8 4 'J ________ I, 24 .9) -2 2 7/8 io 5' -- o;3S 4c -2 /(L fl LOT ILA I Ali I- 7/ I-1O 1_ --±)- 1/r r; f2 Ii - - - leichc qu y: nate) Re i d by: (Signature/Affiliation) Timy --- './ ISTRIBUTlON: White with final report, Green and Yellow to Client. 01/01/12 Revision P'tese note that pages 1 and 2 of 2 of our T/Cs are printed on the reverse side of the Green and Yellow copies respectively. Return to Contents r Caiscience Environmental Laboratories, Inc. ____ 7440 Lincoln Way, Garden Grove, CA 92841-1427 (714) 895-5494 WO #1 LAB USE ONLY I Other CA office locations: Concord and San Luis Obispo - For courier service I sample drop off information, AW /J Ile contact sales(calscience.com or call us. ~6 ? CHAIN OF CUSTODY RECORD Date /cp/ /s- Page 2.._ of _ LABORATORY CLIENT: C_ I CLIENT PROJECT NAME I NUMBER: P.O. NO.: ADDRESS:. __ I_S 2N I Lf! ti VV PROJECT CONTACT: S{v1PLER(S): (PRINT) CITY C a'r I __ STAT q -w, DZIP MAY\ -76 o '13ISS F osoS,r1C.coc'r REQUESTED ANALYSES TURNAROUND TIME: [:1 SAME DAY LJ24HRLI48HR11172 HR[TANDARD Q [1COELT EDF GLOBAL ID LOG CODE . CL SPECIAL INSTRUCTIONS: - - - Ito a1 LIJ C> co 0) owl <V . >< CD cli 8 > 0) ca 03 LAB USE SAMPLE ID. SAMPLING MATRIX NO. OF ONLY DATE TIME CONT. =3 0- LL. I- I— I— 03> 0 Lii cn ci.. a ci EKIIIIIII IZ Il U L f( 7/9 Cf',Z LfE(b -7 —Z )f 9:1j__ L -S) 71 q3(, J)(-±0 L 7/9 9 .L// -- elinquished by: ( ure) Re i d Vy,ure/Affiliation) Date: p Tim I o\ AA I quill d b I re) R y: ( gnature/Affiliation) Date: . Time: ature) R ei ed by: (Signature/Affiliation) Date: _I3 Time: Pro ITRJBUTlON: White with final report, Green and Yellow to Client. / 01/01/12 Revision 0 .• . s••t,e,••o.T•a.,.e•s•G.,Y.i..t.. 0••• S S • .•• •••••• ........................................... Calscuence Environmental Laboratories, Inc. CHAIN OF CUSTODY RECORD El SoCal Laboratory [] NorCal Service Center 7440 Lincoln Way 5063 Commercial Circle Suite H WO # / LAB USE ONLY Date Garden Grove CA 92841-1427 Concord CA 94520-8577 (714) 895-5494 (925) 689-9022 IT Page of_________________ LABORATORY CLIENT: I&L- CLIENT PROJECT NAME I NUMBER: P.O. NO.: 1SOI ADDRESS: 51 Li ItZt I (TY1 PROJECT CONTACT: SAI3ER(S): PRINT) 'JI4n \Y1\, CITY STATE sback CA ZIP 920i o - TEL 3)s 7 too 9 36 TURNAROUND 7MAIL:3 OIV\ REQUESTED ANALYSES TIME: SAME DAY [:]24 HR [:]48 HR [:172 HR STANDARD -? <co 5 COELT EDF GLOBAL ID LOG CODE -LO SPECIAL INSTRUCTIONS: - - I CL / ii;- USE SAMPLE ID DATE TIME --- 61-1 ----------- ----- --iiL SL4i ________ jt s-CDSrao Sj no-/ L__ (x 3 LLH- elinquished by: (Sigture Receiv by: (Signa ref ffihiation) Dat TJ (In ture/Afliliation O'kAhT 13 3E~ . I A X~ L11001 Reed by: (Signature/Affiliation) D.7 / Time: "-.DSTRIBUTlON: White with final report, Green and Yellow to Client. ' / 09/01/13 Revision Please note that pages 1 and 2 of 2 of our T/Cs are printed on the reverse side of the Green and Yellow copies respectively. Return to Contents Page 29 of 29 I eurofins WORK ORDER NUMBER: 15-07- Catscience SAMPLE RECEIPT CHECKLIST COOLER I OF I • CLIENT: __ DATE: 07 I oq I 20151 TEMPERATURE: (Criteria: 0.000 - 6.0°C, not frozen except sediment/tissue) Thermometer ID: SC5 (CF:-0.2°C); Temperature (w/o OF): c. . 00 (wl OF): .3 00; lZ'Blank 0 Sample 0 Sample(s) outside temperature criteria (PM/APM contacted by: O Sample(s) outside temperature criteria but received on ice/chilled on same day of sampling 0 Sample(s) received at ambient temperature; placed on ice for transport by courier I Ambient Temperature: 0 Air 0 Filter Checked by: a • CUSTODY SEAL: - Cooler 0 Present and Intact 0 Present but Not Intact 2esent 0 N/A Checked by: Sample(s) 0 Present and Intact 0 Present but Not Intact dNot Present 0 N/A Checked by: SAMPLE CONDITION: CONDITION: Yes No N/A S Chain-of-Custody (COC) document(s) received with samples .....................................................0 0 COO document(s) received complete .............................. . . 71 0 0 I O Sampling date 0 Sampling time 0 Matrix 0 Number of containers 0 No analysis requested 0 Not relinquished 0 No relinquished date 0 No relinquished time Sampler's name indicated on COC ........................... .......................... ................................V 0 0 • Sample container label(s) consistent with COC ......................................................................I/ 0 0 Sample container(s) intact and in good condition ...................................................................0 0 Proper containers for analyses requested .............................................................................0 0 Sufficient volume/mass for analyses requested ......................................................................0 0 Samples received within holding time ..................................................................................0 o ) Aqueous samples for certain analyses received within 15-minute holding time pH 0 Residual Chlorine 0 Dissolved Sulfide 0 Dissolved Oxygen ..............................0 0 )Z • Proper preservation chemical(s) noted on COC and/or sample container ....................................0 0 % Unpreserved aqueous sample(s) received for certain analyses O Volatile Organics 0 Total Metals 0 Dissolved Metals 1 Container(s) for certain analysis free of headspace ...............................................................0 0 JZ' O Volatile Organics 0 Dissolved Gases (RSK-175) 0 Dissolved Oxygen (SM 4500) O Carbon Dioxide (SM 4500) 0 Ferrous Iron (SM 3500) 0 Hydrogen Sulfide (Hach) TedlarTM bag(s) free of -condensation .................................................................................0 0 CONTAINER TYPE: (Trip Blank Lot Number: Aqueous: DVOA DVOAh DVOAna2 0 IOOPJ 0 100PJna2 0 I25AGB 0 125AGBh 0 125AGBp 0 125P8 0 125PBznna 0 25OAGB 0 2500GB 0 2500GBs 0 250PB 0 250PBn 0 500AGB 0 SOOAGJ 0 500AGJs SOOPB 0 1AGB 0 1AGBna2 0 1AGBs 0 1PB 0 1PBna 0 0 0 0 Solid: 4ozCGJ 0 8ozCGJ 0 16ozCGJ 0 Sleeve (_) 0 EnCores® (_) 0 TerraCores® (_) 0 Air: 0 TedlarTM 0 Canister 0 Sorbent Tube 0 PUF 0 Other Matrix ( ): 0 0 Container: A = Amber, B = Bottle, C = Clear, E = Envelope, G = Glass, J = Jar, P = Plastic, and Z = Ziploc/Resealable Bag Preservative: b = buffered, f = filtered, h = HCl, n = HNO3, na = NaOH, na2 = Na2S203, p = H3PO4, Labeled/Checked by: _______ $ = H2SO4, u = ultra-pure, znna = Zn(CH3CO2)2 + NaOH Reviewed by: 2015-04-10 Revision• eurofins Cscc WORK ORDER NUMBER: 15-07-0557 1 The diffrrence is service AIR I SOIL I WATER I MARINE CHEMISTRY 1 Analytical Report For Client: GeoSoils, Inc. Client Project Name: Yada Family Trust Attention: John Franklin 5741 Palmer Way Carlsbad, CA 92010-7248 Approved for release on 07/27/2015 by: Terri Chang ResultLink 0 Project Manager ,ACC0 3 Email your PM Eurofins Caiscience, Inc. (Calscience) certifies that the test results provided in this report meet all NELAC requirements for parameters for which accreditation is required or available. Any exceptions to NELAC requirements are noted in the case narrative. The original report of subcontracted analyses, if any, is attached to this report. The results in this report are limited to the sample(s) tested and any reproduction thereof must be made in its entirety. The client or recipient of this report is specifically prohibited from making material changes to said report and, to the extent that such changes are made, Calscience is not responsible, legally or otherwise. The client or recipient agrees to indemnify Calscience for any defense to any litigation which may arise. ert ;It o%4 -. f?f P1f CA ELAP ID: 2944 ACLASS DoD-EIAP ID ADE-1864 S01IEC 17025 2005) - CSDLAC ID 10109 Page 2of35 S Øeurofins Caiscience Contentso Client Project Name: Yada Family Trust Work Order Number: 15-07-0557 S Work Order Narrative ...................................... .............. 3 2 Client Sample Data ..................................................... 4• 2.1 EPA 6010B ICP Metals (Solid).......................................... 40 2.2 EPA 8081A Organochlorine Pesticides (Solid) ........ ...................... 6 ...........23 ......... 3 Quality Control Sample Data ........................... 23• 3.1 MS/MSD ........................................................ 3.2 PDS/PDSD ............................. K ..........................251 3.3 LCS/LCSD ...................................................... 26S 4 Sample Analysis Summary ............ ./••• . .... .................. ........28: 5 /7 \ Glossary of Terms and Qualifiers ....... ...................................... 29• 6 Chain-of-Custody/Sample Receipt Form ....................................30. N / S S S S I S S 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 3 of 35 eurofins Work Order Narrative Caiscience S Work Order: 15-07-0557 Page 1 of 1 Condition Upon Receipt: Samples were received under Chain-of-Custody (COC) on 07/09/15. They were assigned to Work Order 15-07-0557. Unless otherwise noted on the Sample Receiving forms all samples were received in good condition and within the recommended EPA temperature criteria for the methods noted on the COC. The COC and Sample Receiving Documents are integral elements of the analytical report and are presented at the back of the report. Holding Times: S All samples were analyzed within prescribed holding times (HT) and/or in accordance with the Calscience Sample Acceptance S Policy unless otherwise noted in the analyticai report and/or comprehensive case narrative, if required. O Any parameter identified in 40CFR Part 136.3 Table II that is designated as analyze immediately with a holding time of <= 15 minutes (40CFR-136.3 Table II, footnote 4), is considered a field test and the reported results will be qualified as being received outside of the stated holding time unless received at the laboratory within 15 minutes of the collection time. Quality Control: All quality control parameters (QC) were within established control limits except where noted in the QC summary forms or described further within this report. Subcontractor Information: 5 Unless otherwise noted below (or on the subcontract form), no samples were subcontracted. Additional Comments: Air - Sorbent-extracted air methods (EPA TO-4A, EPA TO-b, EPA TO-13A, EPA TO-17): Analytical results are converted from S mass/sample basis to mass/volume basis using client-supplied air volumes. Solid - Unless otherwise indicated, solid sample data is reported on a wet weight basis, not corrected for % moisture. All QC results are always reported on a wet weight basis. S • // • S S S • S S • S 7440 Lincoln Way, Garden Gove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 S Page 4of35 00 . euro.ç lflS Analytical Report Caiscience I GeoSoils, Inc. Date Received: 07/091150 5741 Palmer Way Work Order: 15070557• Carlsbad, CA 92010-7248 Preparation: EPA 3050B Method: EPA 601013 Units: mg/kg• Project: Yada Family Trust / Page 1 of 2 Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID Number Collected Prepared Analyzed B-1-2 15-07-0557-2-A 07/08/15 Solid ICP 8300 07/22/15 07/25/15 150722L02 16:30 21:26 Parameter Result RL OF Qualifiers Arsenic 2.56 0.761 1.02 B-2-2 15-07-0557-4-A 07/08/15 Solid ICP 8300 07/22/15 07/25/15 150722 L02 16:42 21:28 Parameter Result RL DF Qualifiers Arsenic 2.93 0.761 1.02 B-3-2 15-07-0557-6-A 07/08/15 SolidICP 8300 07/22/15 07/25/15 150722L02 16:50 - 21:33 Parameter Result RL DF Qualifiers Arsenic 1.77 0.750 1.00 • 1è4-1 15-07-0557-7-A 07/08/15 Solid ICP 8300 07/22/15 07/25/15 150722 L02 17:06 21:35 Parameter Result RL QE Qualifiers a. 5 Arsenic 2.80 0.761 1.02 15-07-0557-10-A 07/08/15 Solid ICP 8300 07/22/15 07/25/15 150722 L02 17:20 21:36 Parameter Result RL DF Qualifiers Arsenic ND 0.754 1.01 B-6-i 15-07-0557-11-A 07/08/15 Sold ICP 8300 07/22/15 07/25/15 150722L021 17:35 21:38 Parameter Result RL OF Qualifiers Arsenic 2.86 0.754 1.01 B-6-2 15-07-0557-12-A 07/08/15 Solid ICP 8300 07/22/15 07/25/15 150722L02 - - 17:46 -- 21:39 Parameter Result RL DF Qualifiers Arsenic 2.68 0.739 0.985 B-7-1 15-07-0557-13-A 07/09/15 Solid ICP 8300 07/22/15 07/25/15 150722L02 7 09:12 21:41 Parameter Result RL DF Qualifiers Arsenic 3.88 0.758 1.01 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 I Page 5 of 35 • eurof ins Analytical Report Caiscience S • GeoSoils, Inc. Date Received: 07/09/15 • 5741 Palmer Way Work Order: 15-07-0557 I Carlsbad, CA 92010-7248 Preparation: EPA 3050B Method: EPA 6010B Units: mg/kg • Project: Yada Family Trust Page 2 of 2 Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID Number Collected Prepared Analyzed - B-8-2 15-07-0557-16-A 07/09/15 Solid ICP 8300 07/22/15 07/25/15 150722L02 S 09:41 21:43 Parameter Result RL DF Qualifiers Arsenic 1.26 0.754 1.01 S I Method Blank 097-01-002-21463 N/A Solid ICP 8300 07/22/15 07/27/15 150722L02 16:21 5 Parameter Result - RL DF Qualifiers Arsenic ND 0.754 1.01 S • • • I • • • • S S I • S • I • RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX:(714) 894-7501 I Page 6of35 S 4 eurofins Analytical Report Caiscience S GeoSoils, Inc. Date Received: 07/09/15 0 5741 Palmer Way Work Order: 15-07-0557 Carlsbad, CA 92010-7248 Preparation: EPA 3545 Method: EPA 8081A Units: ug/kgS Project: Yada Family Trust Page 1 of 17 • Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID Number Collected Prepared Analyzed rB:11 - 15-07-0557-1-A 07/08/15 -- Solid GC 44 07/20/15 07/21/15 150720L12 16:24 -- - 13:25 - :1 Parameter Result RL DF Qualifiers Aldrin ND 5.0 1.00 Alpha-BHC ND 10. 1.00 5 Beta-BHC ND 5.0 1.00 • Chlordane ND 50 1.00 4,4-DDD ND 5.0 1.00 Delta-BHC ND / 10 1.00 Dieldrin ND 5.0 1.00 Endosulfan I ND 5.0 1.00 Endosulfan II ND 5.0 1.00 IJ Endosulfan Sulfate ND 5.0 1.00 Endrin - ND 5.0 1.00 C Endrin Aldehyde ND 5.0 1.00 Endrin Ketone ND 5.0 1.00 Gamma-BHC ND 5.0 1.00 Heptachlor . ND 5.0 1.00 / Heptachlor Epoxide ND 10 1.00 Methoxychlor ND 5.0 1.00 Toxaphene 540 100 1.00 Surrogate Rec. (%) Control Limits Qualifiers Decachlorobiphenyl 109 24-168 2,4,5,6-Tetrachloro-m-Xylene 56 25-145 I 15-07-0557-1-A 07/08/15 Solid GC 44 07/20/15 07/21/15 150720L12 [ 16:24 18:25 Parameter Result RL DF Qualifiers 4,4-DDE 130 25 5.00 4,4-DDT 46 25 5.00 Surrogate Rec. (%) Control Limits Qualifiers Decachlorobiphenyl 108 24-168 5 2,45,6-Tetrachloro-m-Xylene 57 25-145 AL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 7 of 35 .> euro ins Analytical Report Calscience • GeoSoils, Inc. Date Received: 07/09/15 • 5741 Palmer Way Work Order: 15-07-0557 . Carlsbad, CA 92010-7248 Preparation: EPA 3545 Method: EPA 8081A • Units: ug/kg O Project: Yada Family Trust Page 2 of 17 Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID Number Collected Prepared Analyzed 15-07-0557-2-A 07/08/15 Solid GC 44 07/20/15 07/21115 150720L1 2 - --- 16:30 13:39 Parameter Result RL DF Qualifiers Aldrin ND 5.0 1.00 Alpha-BHC ND 10 1.00 Beta-BHC ND 5.0 1.00 .Chlordane ND 50 1.00 4,4'-DDD ND 5.0 1.00 S 4,4-DDE 5.4 5.0 1.00 Q 4,4-DDT ND 5.0 1.00 ND 10 1.00 .Delta-BHC Dieldrin ND 5.0 1.00 5 Endosulfan I ND 5.0 1.00 Endosulfan II / ND 5.0 1.00 Endosulfan Sulfate ND 5.0 1.00 o C Endrin ND 5.0 1.00 Endrin Aldehyde ND 5.0 1.00 •Endrin Ketone ND 5.0 1.00 Gamma-BHC ND 5.0 1.00 • Heptachlor ND 5.0 1.00 I Heptachlor Epoxide ND 10 1.00 Methoxychlor ND 5.0 1.00 I Toxaphene ND 100 1.00 Surrogate Rec. (%) Control Limits Qualifiers 0 24-168 Decachlorobiphenyl ., 101 • 2,4,5,6-Tetrachloro-m-Xylene 47 25-145 I • I . S S I I • AL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 8of35 S eurof ins Analytical Report Caiscience S GeoSoils, Inc. Date Received: 07/09/159 5741 Palmer Way Work Order: 15070557• Carlsbad, CA 92010-7248 Preparation: EPA 3545 S Method: EPA 8081A Units: ug/kg • Project: Yada Family Trust ' Page 3 of 17 Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID Number Collected Prepared Analyzed B-2-1 15-07-0557-3-A 07108/15 Solid GC 44 07/20/15 07/21/15 150720L12 L 16:35 13:53 1 Parameter Result RL DF Qualifiers Aldrin ND 5.0 1.00 Alpha-BHC ND 10 -' 1.00 Beta-BHC ND 5.0 . 1.00 S Chlordane ND 50 1.00 I 4,4-DDD ND 5.0 1.00 Delta-BHC ND / 10 1.00 - Dieldrin ND / 5.0 - 1.00 Endosulfan I ND 5.0 1.00 / 1 Endosulfan II ND 5.0 1.00 lj Endosulfan Sulfate ND 5.0 1.00 5 Endrin 7 ND - 5.0 1.00 Endrin Aldehyde ND 5.0 - 1.00 Endrin Ketone 'ND 5.0 1.00 Gamma-BHC - ND - 5.0 1.00 Heptachlor / ND 5.0 1.00 - S Heptachlor Epoxide - ND - 10 1.00 Methoxychlor ND 5.0 1.00 Toxaphene '. 1900 100 1.00 Surroate - Rec. (%) - Control Limits Qualifiers S Decachlorobiphenyl 110 - 24-168 2,4,5,6-Tetrachloro-m-Xylene 54 ' 25-145 B-2-1 15-07-0557-3-A 07/08/15 Solid GC 44 07/20/15 07/21/15 150720L12 16:35 18:39 Parameter Result RL DF Qualifiers S 4,4-DDE 330 100 20.0 4,4-DDT 280 100 20.0 Surrogate Rec. (%) Control Limits Qualifiers Decachlorobiphenyl 116 24-168 2,4,5,6-Tetrachloro-m-Xylene 55 25-145 S I RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 9 of 35 • > eurofins Analytical Report Calscience I • GeoSoils, Inc. Date Received: 07/09/15 • 5741 Palmer Way Work Order: 15-07-0557 • Carlsbad, CA 92010-7248 Preparation: EPA 3545 . Method: EPA 8081A Units: ug/kg • Project: Yada Family Trust / Page 4 of 17 Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID Number Collected Prepared Analyzed B-2-2 15-07-0557-4-A 07/08/15 Solid GC 44 07/20/15 07/21/15 150720L12 16:42 14:07 Parameter Result RL OF Qualifiers Aldrin ND 5.0 1.00 Alpha-BHC ND 10 1.00 Beta-BHC ND 5.0 1.00 • Chlordane ND 50 1.00 4,4-DDD ND 5.0 1.00 S 4,4-DDE 8.7 5.0 1.00 4,4-DDT 13 5.0 1.00 ND 10 1.00 • Delta-BHC Dieldrin ND 5.0 1.00 5 Endosulfan I ND 5.0 1.00 . Endosulfan II 7 ND 5.0 1.00 Endosulfan Sulfate ND 5.0 1.00 I Endrin ND 5.0 1.00 5 Endrin Aldehyde ND 5.0 1.00 • Endrin Ketone ND 5.0 1.00 Gamma-BHC ND 5.0 1.00 Heptachlor ND 5.0 1.00 I Heptachlor Epoxide ND 10 1.00 Methoxychlor NO 5.0 1.00 Toxaphene 300 100 1.00 Surrogate Rec. (%) Control Limits Qualifiers Oecachlorobiphenyl 102 24-168 5 2,4,5,6-Tetrachloro-m-Xylene 45 25-145 • • / • S I I RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 100f35 0 eurof ins Analytical Report Calscience S GeoSoils, Inc. Date Received: 07/09/15. 5741 Palmer Way Work Order: 15-07-0557 Carlsbad, CA 92010-7248 Preparation: EPA 3545 Method: EPA 8081A5 Units: ug/kgS Project: Yada Family Trust Page 5 of 17 Client Sample Number Lab Sample Datefflme Matrix Instrument Date Date/Time QC Batch ID B-3-1 Parameter Aldrin Alpha-BHC Beta-BHC Chlordane 4,4-DDD Delta-BHC Dieldrin Endosulfan I Endosulfan II Endosulfan Sulfate Endrin Endrin Aldehyde Endrin Ketone Gamma-BHC Heptachlor Heptachlor Epoxide Methoxychlor Surrogate Decachlorobiphenyl 2,4,5,6-Tetrachloro-m-Xylene Number Collected 15-07-0557-5-A 07/08/15 16:42 Result ND ND ND ND ND ND ND ' ND ND ND ND ND ND ND ND ND ND N Rec(%) N 109 56 RL DF 5.0 1.00 9.9 1.00 5.0 1.00 50 1.00 5.0 1.00 9.9 1,.00 \ 5.0 1.00 5.0 1.00 5.0 1.00 5.0 1.00 5.0 1.00 5.0 1.00 5.0 1.00 5.0 1.00 5.0 1.00 9.9 1.00 5.0 1.00 Control Limits Qualifiers 24-168 25-145 Qualifiers S S / . OLI I S S S Prepared Analyzed Solid GC 44 07/20/15 07/21/15 150720L12 14:22 B-3-1 15-07-0557-5-A 07/08/15 Solid GC 44 07/20/15 07/21/15 150720L12 16:42 18:53 Parameter Result RL DF Qualifiers S 44-DDE 180 50 10.0 5 4,4-DDT 180 50 10.0 Toxaphene 2500 990 10.0 . Surrogate Rec. (%) Control Limits Qualifiers Decachlorobiphenyl 109 24-168 2,4,5,6-Tetrachloro-m-Xylene 56 25-145 S I AL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 11 of 35 ,> euro IflS Analytical Report Calscience . • GeoSoils, Inc. Date Received: 07/09/15 • 5741 Palmer Way Work Order: 15-07-0557 . Carlsbad, CA 92010-7248 Preparation: EPA 3545 Method: EPA 8081A • Units: . ug/kg • Project: Yada Family Trust Page 6 of 17 Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID - Number Collected - Prepared Analyzed • B-3-2 15-07-0E57-6-A 07/08/15 16:50 Solid GC 44 07/20/15 07/21/15 150720L12 14:36 Parameter Result RL DF Qualifiers Aldrin ND 5.0 1.00 10 Alpha-BHC ND 10' 1.00 Beta-BHC ND 5.0 1.00 • Chlordane . ND 50 1.00 4,4-DDD ND 5.0 1.00 • 4,4-DDE ND 5.0 1.00 " 4,4'-DDT 5.7 5.0 1.00 ND 10 1.00 .Delta-BHC - Dieldrin ND 5.0 1.00 Endosulfan I ND 5.0 1.00 Endosulfan II " ND 5.0 1.00 Endosulfan Sulfate ND 5.0 1.00 Endrin ND 5.0 1.00 Endrin Aldehyde / ND 5.0 1.00 •Endrin Ketone ND .5.0 1.00 Gamma-BHC ND 5.0 1.00 • Heptachlor '' ND 5.0 1.00 Heptachlor Epoxide ND 10 1.00 Methoxychlor ND \. 5.0 1.00 Toxaphene ". ND 100 1.00 Surrogate Rec. (%) Control Limits Qualifiers Decachlorobiphenyl 101 24-168 • 2,4,5,6-Tetrachloro-m-Xylene 47 25-145 S / S S S S S S RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 S Page 12of35 00 . euro.c IflS Analytical Report Caiscience I GeoSoils, Inc. Date Received: 07/09/155 5741 Palmer Way Work Order: 15070557. Carlsbad, CA 92010-7248 Preparation: EPA 3545 EPA 8081A Method: Units: -. ug/kg S Project: Yada Family Trust / Page 7 of 17 • Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID - Number Collected Prepared Analyzed B-4-1 15-07-0557-7-A 07/08/15 Solid GC 44 07/20/15 07/21/15 150720L12 -- 17:06 14:50 5 Parameter Result RL DF Qualifiers Aldrin ND 5.1 1.00 Alpha-BHC ND 10< 1.00 Beta-BHC ND 5.1 1.00 '. Chlordane. ND 51 1.00 4,4-DDD ND - 5.1 1.00 Delta-BHC ND / 10 100 Dieldrin ND / " 5.1 1.00 Endosulfan I /7 ND 5.1 1.00 Endosulfan II ND 5.1 1.00 Endosulfan Sulfate - ND / 5.1 \ 1.00 ' '- 1, 1.00 Endrin ND ,, 5.1 / Endrin Aldehyde ND - 5.1 1.00 Endrin Ketone '"ND 5.1 1.00 Gamma-BHC / ND \ 5.1 1.00 Heptachlor ND 5.1 1.00 5 Heptachlor Epoxide - ND 10 1.00 Methoxychlor ND 5.1 1.00 Toxaphene 1400 100 1.00 \ 5 Surrogate . Rec. (%) Control Limits Qualifiers Decachiorobiphenyl ' - \.,109 24-168 5 2,4,5,6-Tetrachloro-m-Xylene 50 25-145 S B-4-1 15-07-0557-7-A 07/08/15 Solid GC 44 07/20/15 07/21/15 150720L12 17:06 19:22 Parameter Result RL DF Qualifiers 5 4,4-DDE 71 25 5.00 -. 4,4'-DDT - 81. 25 5.00 Surrogate - Rec. (%) - Control Limits Qualifiers 5 Decachlorobiphenyl 105 24-168 5 2,4,5,6-Tetrachloro-m-Xylene 51 25-145 S RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 FAX: (714) 894-7501 S Page 13 of 35 S • saD .,.> eurofins Analytical Report Calscience • GeoSoils, inc. Date Received: 07/09/15 • 5741 Palmer Way Work Order: 15-07-0557 S Carlsbad, CA 92010-7248 Preparation: EPA 3545 Method: EPA 8081A S Units: ug/kg • Project: Yada Family Trust Page 8 of 17 Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID 5 Number Collected - - Prepared Analyzed B-4-2 15-07-0557-8-A 07/08/15 Solid GC 44 07/20/15 07/21/15 150720L12 5 17:12 15:05 5 Parameter Result RL DF Qualifiers Aidrin ND 5.0 1.00 S Alpha-BHC ND 10 1.00 Beta-BHC ND 5.0 1.00 S Chlordane ND 50 1.00 4,4-DDD ND 5.0 1.00 S 4,4-DDE 6.2 5.0 1.00 5 4,4-DDT 6.8 5.0 1.00 .Delta-BHC ND 10 1.00 Dieldrin ND 5.0 1.00 5 Endosulfan I ND 5.0 1.00 S Endosulfan II ND .. 5.0 1.00 Endosulfan Sulfate ND 5.0 1.00 5 Endrin ND 5.0 1.00 5 Endrin Aldehyde - ND 5.0 1.00 S Endrin Ketone ND 5.0 1.00 Gamma-BHC ND 5.0 1.00 0 Heptachlor ND 5.0 1.00 5 Heptachlor Epoxide ND 10 1.00 Methoxychlor ND 5.0 1.00 S Toxaphene 150 100 1.00 Surrogate Rec. (%) Control Limits Qualifiers S Decachlorobiphenyl '106 24-168 5 2,4,5,6-Tetrachloro-m-Xylene / 58 25-145 S S t S S S S S S S • RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 S S Page 14of35 09 S eurof lflS Analytical Report Calscience S GeoSoils, Inc. Date Received: 07/09/15 5741 Palmer Way Work Order: 15-07-0557 Carlsbad, CA 92010-7248 Preparation: EPA 3545 Method: EPA 8081A Units: - / ug/kg Project: Yada Family Trust Page 9 of 17 5 Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID Number Collected Prepared Analyzed B-5-1 15-07-0557-9-A 07/08/15 Solid GC 44 07/20/15 07/21/15 150720L12 17:18 15:19 Parameter Result RL DF Qualifiers Aldrin ND 5.0 1.00 Alpha-BHC ND 10' -. 1.00 - Beta-BHC ND 5.0 1.00 Chlordane ND 50 1.00 4,4-DDD ND 5.0 1.00 Delta-BHC ND / 10 1.00 Dieldrin ND / 5.0 1.00 Endosulfan I ND '\ 5.0 1.00 Endosulfan II ND 5.0 1.00 Endosulfan Sulfate ND 5.0 1.00 Endrin 7 'ND 5.0 1.00 Endrin Aldehyde ND 5.0 . 1.00 Endrin Ketone - ND 5.0 1.00 Gamma-BHC ND 5.0 1.00 5 Heptachlor - ND 5.0 1.00 / Heptachlor Epoxide ND 10 1.00 Methoxychlor ND 5.0 1.00 Toxaphene 1700 100 1.00 Surrogate ., Rec. (%) Control Limits Qualifiers 5 Decachlorobiphenyl ' 111 24-168 2,4,56-Tetrachloro-m-Xylene 49 25-145 S PB-5-1 15-07-0557-9-A 07/08/15 Solid GC 44 07/20/15 07/21/15 150720L12 17:18 19:36 Parameter Result RL DF Qualifiers 5 4,4-DDE 130 50 10.0 4,4-DDT 260 50 10.0 Surrogate Rec. (%) Control Limits Qualifiers 5 Decachlorobiphenyl 125 24-168 S 2,4,5,6-Tetrachloro-m-Xylene 53 25-145 5 AL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 15of35 • eurofins Analytical Report Calscience • • GeoSoils, Inc. Date Received: 07/09/15 • 5741 Palmer Way Work Order: 15-07-0557 • Carlsbad, CA 92010-7248 Preparation: EPA 3545 Method: EPA 8081A • Units: ug/kg • Project: Yada Family Trust / Page 10 of 17 Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date,Time QC Batch ID • Number Collected Prepared Analyzed B-5-2 15-07-0557-10-A 07/08/15 Solid GC 44 07/20/15 07/21/15 150720L12 • 17:20 15:33 Parameter Result RL DF Qualifiers Aldrin ND 5.0 1.00 Alpha-BHC ND 10 1.00 Beta-BHC ND 5.0 1.00 • Chlordane ND 50 1.00 4,4-DDD ND 5.0 1.00 4,4-DDE 6.1 5.0 1.00 4,4'-DDT 7.6 5.0 1.00 - Delta-BHC ND 10 1.00 S Dieldrin ND 5.0 1.00 5 Endosulfan I ND 5.0 1.00 • Endosulfan II ND 5.0 1.00 Endosulfan Sulfate ND 5.0 1.00 S Endrin ND 5.0 1.00 Endrin Aldehyde ND 5.0 1.00 • Endrin Ketone ND 5.0 1.00 Gamma-BHC ND 5.0 1.00 Heptachlor ND 5.0 1.00 • Heptachlor Epoxide ND 10 1.00 Methoxychlor ND 5.0 1.00 S Toxaphene 350 100 1.00 Surrogate Rec. (%) Control Limits Qualifiers Decachiorobiphenyl 105 24-168 5 2,4,5,6-Tetrachloro-m-Xylene 50 25-145 • • • • . S • S S RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 0 S Page 16of35 • .> euro.1 IflS Analytical Report S Caiscience GeoSoils, Inc. Date Received: 07/09/15 5 5741 Palmer Way Work Order: 15-07-0557 Carlsbad, CA 92010-7248 Preparation: EPA 3545 Method: .. EPA 8081A Units: ug/kg S Project: Yada Family Trust / Page 11 of 17 • Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID Number Collected Prepared Analyzed B-6-1 15-07-0557-11-A 07/08/15 Solid GC 44 07/20/15 07/21/15 150720L12 17:35 - 15:47 Parameter Result RL QE Qualifiers Aldrin ND 5.0 1.00 Alpha-BHC ND 10 1.00 S Beta-BHC ND 5.0 1.00 5 Chlordane ND 50 1.00 4,4-DDD ND ,.- 5.0 1.00 4,4-DDE 22 / 5.0 ' 1.00 5 4,4-DDT 12 5.0 1.00 - Delta-BHC ND " 10 1.00 Dieldrin ND 5.0 1.00 Endosulfan I ND 5.0 1.00 Endosulfan II ' ND 5.0 1.00 Endosulfan Sulfate ND 5.0 1.00 Endrin ND 5.0 1.00 / Endrin Aldehyde / ND 5.0 1.00 Endrin Ketone / ND 5.0 1.00 S Gamma-BHC ND 5.0 1.00 Heptachlor ND 5.0 1.00 Heptachlor Epoxide .. ND 10 1.00 5 Methoxychlor ND ".- -' 5.0 1.00 Toxaphene '\140 / 100 1.00 S Surrogate Rec. (%) Control Limits Qualifiers Decachlorobiphenyl '109 24-168 S 2,4,5,6-Tetrachloro-m-Xylene 55 25-145 5 S S S S S S S S AL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 S Page 17 of 35 • .,> eurofins Analytical Report Caiscience • GeoSoils, Inc. Date Received: 07/09/15 • 5741 Palmer Way Work Order: 15-07-0557 . Carlsbad, CA 92010-7248 Preparation: EPA 3545 Method: EPA 8081A • Units: ug/kg • Project: Yada Family Trust Page 12 of 17 Client Sample Number Lab Sample Datefflme Matrix Instrument Date Date/Time QC Batch ID Number Collected Prepared Analyzed B-6-2 15-07-0557-12-A 07/08/15 Solid GC 44 07/20/15 07/21/15 150720L12 17:46 16:02 Parameter Result AL DF Qualifiers Aldrin ND 5.0 1.00 Alpha-BHC ND 10 1.00 Beta-BHC ND 5.0 1.00 • Chlordane ND 50 1.00 4,4-DDD ND 5.0 1.00 4,4-DDE 5.7 5.0 1.00 4,4-DDT ND 5.0 1.00 ND 10 1.00 .Delta-BHC Dieldrin ND 5.0 1.00 Endosulfan I ND 5.0 1.00 'V Endosulfan II 7' ND 5.0 1.00 Endosulfan Sulfate ND 5.0 1.00 • Endrin ND 5.0 1.00 Endrin Aldehyde ND 5.0 1.00 •Endrin Ketone ND 5.0 1.00 Gamma-BHC ND 5.0 1.00 • Heptachlor ND 5.0 1.00 • Heptachlor Epoxide ND 10 1.00 Methoxychior ND 5.0 1.00 Toxaphene \ ND 100 1.00 Surrogate Rec. (%) Control Limits Qualifiers Decachlorobiphenyl 108 24-168 • 2,4,5,6-Tetrachloro-m-Xylene 53 25-145 • / S • S S S S RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 18of35 S eurofins Analytical Report Caiscience GeoSoils, Inc. Date Received: 07/09/15 0 5741 Palmer Way Work Order: 15-07-0557 Carlsbad, CA 92010-7248 Preparation: EPA 3545 EPA 8081A5 Method: Units: / ug/kgS Project: Yada Family Trust / Page 13 of 17 5 S Client Sample Number Lab Sample Datefflme Matrix Instrument Date Date/Time QC Batch ID Number Collected Prepared Analyzed PB-7-1 15-07-0557-13-A 07/09/15 Solid GC 44 07/20/15 07/21115 150720L12 09:12 16:16 5 Parameter Result RL DF Qualifiers Aidrin ND 5.0 1.00 Alpha-BHC ND 10" 1.00 5 Beta-BHC ND 5.0 1.00 5 Chlordane ND 50 1.00 5 4,4'-DDD ND 5.0 1.00 Delta-BHC ND / io 1.00 5 Dieldrin ND j 5.0 1.00 Endosulfan I ND 5.0 1.00 Endosulfan II ND 5.0 1.00 Endosulfan Sulfate ND 5.0 1.00 Endrin ND 5.0 1.00 Endrin Aldehyde ND 5.0 1.00 Endrin Ketone ND 5.0 1.00 Gamma-BHC ND 5.0 1.00 Heptachlor ND N 5.0 1.00 Heptachlor Epoxide ND 10 1.00 5 Methoxychlor . ND 5.0 1.00 S Surrogate Rec. (%' Control Limits Qualifiers Decachlorobiphenyl 109 24-168 5 2,4,5,6-Tetrachloro-m-Xylene 61 25-145 S IB-7-1 15-07-0557-13-A 07/09/15 Solid GC 44 07/20/15 07/21/15 150720L12 09:12 19:50 S Parameter Result RL DF Qualifiers Toxaphene 2500 1000 10.0 S Surrogate Rec. (%) Control Limits Qualifiers Decachlorobiphenyl 126 24-168 5 2,4,5,6-Tetrachloro-m-Xylene 61 25-145 S S S S RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 5 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 0 Page 19 of 35 • eurofins Analytical Report Calscience • GeoSoils, Inc. Date Received: 07/09/15 • 5741 Palmer Way Work Order: 15-07-0557 . Carlsbad, CA 92010-7248 Preparation: EPA 3545 Method: EPA 8081A • Units: ug/kg • Project: Yada Family Trust Page 14 of 17 Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID Number Collected Prepared Analyzed rB-7-1 15-07-0557-13-A 07/09/15 Solid GC 44 07/20/15 07/21/15 150720L12 09:12 - 20:05 Parameter Result RL DF Qualifiers 4,4-DDE 730 250 50.0 4,4'-DDT 460 250 50.0 . Surrogate ___ Rec. (%) __ Control Limits Qualifiers • ____ Decachlorobiphenyl 142 24-168 • 2,4,5,6-Tetrachloro-m-Xylene 76 25-145 B-7-2 15-07-0557-14-A 07/09/15 Solid GC 44 07/20/15 07/21/15 150720L12 • 09:19 - 16:30 Result RL DF Qualifiers •Parameter Aldrin ND 5.0 1.00 • Alpha-BHC ND 10 1.00 . Beta-BHC ND 5.0 1.00 Chlordane ND 50 1.00 4,4-DDD ND 5.0 1.00 4,4-DDE 13 5.0 1.00 .4,4 -DDT 6.0 5.0 1.00 Delta-BHC ND 10 1.00 Dieldrin . ND 5.0 1.00 Endosulfan I ND . 5.0 1.00 Endosulfan II \ ND 5.0 1.00 • Endosulfan Sulfate ND 5.0 1.00 Endrin ND 5.0 1.00 •Endrin Aldehyde ND 5.0 1.00 Endrin Ketone ND 5.0 1.00 Gamma-BHC ND 5.0 1.00 Heptachlor ND 5.0 1.00 Heptachlor Epoxide ND 10 1.00 Methoxychlor ND 5.0 1.00 • Toxaphene ND 100 1.00 Surrogate Rec. (%) Control Limits Qualifiers • Decachlorobiphenyl 105 24-168 • 2,4,5,6-Tetrachloro-m-Xylene 59 25-145 • RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 • 0 0 0 0 0 0 Page 20 of 35 00 eurofins Analytical Report Caiscience GeoSoils, Inc. Date Received: 07/09/15 5741 Palmer Way Work Order: 1507.0557. Carlsbad, CA 92010-7248 Preparation: EPA 3545 Method: EPA 8081A Units: / ug/kgS Project: Yada Family Trust / Page 15 of 17 Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID Number Collected - Prepared Analyzed B-8-1 15-07-0557-15-A 07/09/15 Solid GC 44 07/20/15 07/21/15 150720L12 09:36 16:45 Parameter Result RL DF Qualifiers Aldrin ND 5.0 1.00 Alpha-BHC ND 10K 1.00 Beta-BHC ND 5.0 1.00 Chlordane ND 50 1.00 4,4-DDD ND - 5.0 1.00 Delta-BHC ND / 10 1.00 Dieldrin ND / 5.0 1.00 Endosulfan I ND , 5.0 1.00 Endosulfan II ND 5.0 '-. 1.00 Endosulfan Sulfate ND 5.0 1.00 Endrin / ND 5.0 1.00 Endrin Aldehyde ND 5.0 1.00 Endrin Ketone ND 5.0 1.00 Gamma-BHC ND 5.0 1.00 .t Heptachlor . ND 1,5.0 1.00 Heptachlor Epoxide ND 10 1.00 Methoxychlor \.ND 5.0 1.00 Surroate Rec. (%) Control Limits Qualifiers Decachlorobiphenyl 110 24-168 2,4,5,6-Tetrachloro-m-Xylene 65 25-145 15070557=15A 07/09/15 Solid - GC 44 07/20/15 07/21/15 150720L12 09:36 20:19 Parameter Result RL OF Qualifiers Toxaphene 3300 1000 10.0 Surrogate Rec. (%) Control Limits Qualifiers Decachlorobiphenyl 149 24-168 2,4,5,6-Tetrachloro-m-Xylene 82 25-145 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 21 of 35 • .,.> eurof ins Analytical Report Caiscience • GeoSoils, Inc. Date Received: 07/09/15 • 5741 Palmer Way Work Order: 15-07-0557 • Carlsbad, CA 9201 0-7248 Preparation: EPA 3545 . Method: EPA 8081A Units: ug/kg • Project: Yada Family Trust Page 16 of 17 Client Sample Number Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID • Number Collected Prepared Analyzed B-8-1 15-07-0557-15-A 07/09/15 Solid GC 44 07/20/15 07/21/15 150720L12 - 09:36 20:33 Parameter Result RL DF Qualifiers 4,4-DDE 670 250 50.0 4,4-DDT 580 250 50.0 Surrogate Rec. (%) Control Limits Qualifiers Decachlorobiphenyl 166 24-168 • 2,4,5,6-Tetrachloro-m-Xylene 102 25-145 • - B-8-2 15-07-0557-16-A 07/09/15 Solid GC 44 07/20/15 07/21/15 150720L12 • .-.-- ._____i_ 09:41 16:59 Result RL DF Qualifiers • Parameter Aidrin ND 5.0 1.00 • Alpha-BHC ND 10 1.00 . Beta-BHC ND 5.0 1.00 Chlordane ND 50 1.00 • 4,4'-DDD ND 5.0 1.00 4,4-DDE 12 5.0 1.00 . 4,4-DOT 6.8 5.0 1.00 Delta-BHC ND 10 1.00 Dieldrin ND 5.0 1.00 • Endosulfan I N ND 5.0 1.00 Endosulfan II \ ND 5.0 1.00 Endosulfan Sulfate ND 5.0 1.00 Endrin ,ND 5.0 1.00 • Endrin Aldehyde ND 5.0 1.00 Endrin Ketone . ND 5.0 1.00 Gamma-BHC ND 5.0 1.00 Heptachlor ND 5.0 1.00 Epoxide ND 10 1.00 • Heptachlor Methoxychior ND 5.0 1.00 • Toxaphene 120 100 1.00 Surrogate Rec. (%) Control Limits Qualifiers • Decachlorobiphenyl 102 24-168 2,4,5,6-Tetrachloro-m-Xylene 70 25-145 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 22 of 35 eurofins Analytical Report Calscience GeoSoils, Inc. 5741 Palmer Way Carlsbad, CA 92010-7248 Date Received: 07/09/15 Work Order: 15.070557. Preparation: EPA 3545 EPA 8081A Method: Units: / ug/kgS / Page 17of17 • Lab Sample Date/Time Matrix Instrument Date Date/Time QC Batch ID Number Collected Prepared Analyzed 099-12-537-2166 N/A Solid GC 44 07/20/15 07/21/15 150720L12 I 12:42 Project: Yada Family Trust Client Sample Number Method Blank Parameter Result HL UI- Qualifiers Aidrin ND 5.0 1.00 Alpha-BHC ND 101" 0 1.00 Beta-BHC ND 5.0 1.00 • Chlordane ND 50 1.00 4,4-DDD ND 5.0 1.00 4,4-DDE ND ,' 5.0.. 1.00 4,4-DDT ND / 5.0 1.00 Delta-BHC ND ' 10 1.00 Dieldrin ND 5.0 1.00 Endosulfan I ND 5.0 1.00 Endosulfan II - ND 5.0 1.00 Endosulfan Sulfate ND 5.0 1.00 Endrin ND 5.0 1.00 Endrin Aldehyde - ND 5.0 1.00 Endrin Ketone ND .5.0 1.00 Gamma-BHC ND 5.0 1.00 Heptachlor ND 5.0 1.00 Heptachlor Epoxide ND 10 1.00 Methoxychlor . ND ." 5.0 1.00 / Toxaphene N ND / 100 1.00 'S Surrogate Rec. (% Control Limits Qualifiers Decachlorobiphenyl '. 105 24-168 2,4,5,6-Tetrachloro-m-Xylene 92 25-145 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit. 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 FAX: (714) 894-7501 Page 23 of 35 • eurofins Quality Control - Spike/Spike Duplicate Calscience • GeoSoils, Inc. Date Received: 07/09/15 • 5741 Palmer Way Work Order: 15-07-0557 • Carlsbad, CA 92010-7248 Preparation: EPA 3050B Method: EPA 6010B • Project: Yada Family Trust Page 1 of 2 • Parameter Sample Spike MS MS jjQ MSD %Rec. CL RPD RPD CL Qualifiers Conc. Added Conc. %Rec. Conc. %Rec. Arsenic 3.249 25.00 29.94 107 27.83 98 80-120 7 0-20 • • • • : • • • • • • • • • • • • • • • • • • RPD: Relative Percent Difference. CL: Control Limits 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 24 of 35 S eurofins S Quality Control - Spike/Spike Duplicate Calscience S GeoSoils, Inc. Date Received: 07/09/15 0 5741 Palmer Way Work Order: 15070557. Carlsbad, CA 92010-7248 Preparation: EPA 3545 Method: .. EPA 8081A Project: Yada Family Trust Page 2 of 2 S Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed MS/MSD Batch Number B-5-2 Sample Solid GC 44 07/20/15 07121/15 15:33 150720S12 B-5-2 Matrix Spike Solid GC 44 07/20/15 07/21/15 12:56 150720S12 5 B-5-2 Matrix Spike Duplicate Solid GC 44 07/20/15 07/21/1513:10 150720S12 -5 Parameter Sample Spike MS MS MSD MSD %Rec. CL EEQ RPD CL Qualifiers Conc. Added Conc. %Rec. Conc. %Rec. 5 Aldrin ND 25.00 17.42 70 17.65 71 50-135 1 0-25 Alpha-BHC ND 25.00 17.63 71 17.93 72 50-135 2 0-25 Beta-BHC ND 25.00 20.28 81 20.01 80 50-135 1 0-25 S 4,4-DDD ND 25.00 26.74 107 26.40 106 50-135 1 0-25 5 4,4-DDE 6.140 25.00 27.02 84 26.71 82 50-135 1 0-25 4,4'-DDT 7.611 25.00 44.10 /'146 44.09 146 50-135 0 0-25 3 Delta-BHC ND 25.00 20.37 81 20.28 81 50-135 0 0-25 Dieldrin ND 25.00 28.43 114 28.02 112 50-135 1 0-25 Endosulfan I ND 25.00 20.82 83 20.53 82 50-135 1 0-25 Endosulfan II ND 25.00 37.41 150 37.08 148 50-135 1 0-25 3 Endosulfan Sulfate ND 25.00 35.05 140 35.00 140 50-135 0 0-25 3 Endrin ND 25.00 27.27 109 27.06 108 50-135 1 0-25 Endrin Aldehyde ND 25.00 37.29 149 44.39 178 50-135 17 0-25 3 Cl Gamma-BHC ND 25.00 18.07 72 . 18.22 73 50-135 1 0-25 5 Heptachlor ND 25.00 19.44 78 19.65 79 50-135 1 0-25 5 Heptachlor Epoxide ND 25.00 20.99 84 20.98 84 50-135 0 0-25 Methoxychlor ND 25.00 41.36 165 41.73 167 50-135 1 0-25 3 N S S S S S S S S S S S S S RPD: Relative Percent Difference. CL: Control Limits 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 25 of 35 • > eurofins Quality Control - PDS Caiscience S • GeoSoils, Inc. Date Received: 07/09/15 • 5741 Palmer Way Work Order: 15-07-0557 • Carlsbad, CA 92010-7248 Preparation: EPA 3050B Method: EPA 6010B • Project: Yada Family Trust Page 1 of 1 Quality control Sample ID Type Matrix Instrument Date Prepared Date Analyzed PDS/PDSD Batch Number 5 15-07-1197-6 Sample Solid ICP 8300 07/22/15 00:00 07/27/15 16:27 150722S02 PDS Solid ICP 8300 07/22/15 00:00 07/27/15 16:32 150722S02 • 15-07-1197-6 - Parameter Sample Conc. Spike Added PDS Conc. PDS %Rec. %Rec. CL Qualifiers 5 Arsenic 3.249 25.00 27.10 95 75-125 • • • S • • S • S • • S S • • • • • • S • • S • • S 5 RPD: Relative Percent Difference. CL: Control Limits 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 Page 26 of 35 eurofins Quality Control - LCS Calscience GeoSoils, Inc. Date Received: 07/09I15 5741 Palmer Way Work Order: 15070557. Carlsbad, CA 92010-7248 Preparation: EPA 3050B Method: EPA 601013 Project: Yada Family Trust / Page 1 of 2 Quality control Sample ID Type Matrix Instrument Date Prepared Date Analyzed LCS Batch Number 1 097-01-002-21463 LCS - Solid ICP 8300 07/22/15 07/27/15 1623 1507221-02 - Parameter Spike Added Conc. Recovered LS %Rec. %Rec. CL Qualifiers Arsenic 25.00 23.77 95 80-120 S I RPD: Relative Percent Difference. CL: Control Limits 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 S Page 27 of 35 • eurofins Quality Control - LCS Caiscience • GeoSoils, Inc. Date Received: 07/09/15 • 5741 Palmer Way Work Order: 15-07-0557 . Carlsbad, CA 92010-7248 Preparation: EPA 3545 Method: EPA 8081A • Project: Yada Family Trust Page 2 of 2 w Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed LCS Batch Number 1099-112-537-21166 LCS - - Solid GC 44 07/20/1507/21/15 - - 17:13 150720L12 Parameter Spike Added Conc. Recovered LCS %Rec. %Rec. CL ME CL Qualifiers Aldrin 25.00 20.10 80 50-135 36-149 Alpha-BHC 25.00 20.90 84 50-135 36-149 • Beta-BHC 25.00 20.41 82 50-135 36-149 4,4-ODD 25.00 25.00 100 50-135 36-149 .4,4-DDE 25.00 26.34 105 50-135 36-149 4,4'-DDT 25.00 27.04 108 50-135 36-149 Delta-BHC 25.00 23.66 95 50-135 36-149 Dieldrin 25.00 23.46 94 50-135 36-149 I 25.00 19.83 79 50-135 36-149 .Endosulfan Endosulfan II 25.00 24.27 97 50-135 36-149 Endosulfan Sulfate 25.00 25.93 104 50-135 36-149 . Endrin 25.00 24.86 99 50-135 36-149 Endrin Aldehyde 25.00 - 23.12 92 50-135 36-149 . 7 Gamma-BHC 25.00 21.79 87 50-135 36-149 o Heptachlor 25.00 22.45 90 50-135 36-149 E Epoxide 25.00 25.68 103 50-135 36-149 .Heptachlor Methoxychlor 25.00 32.43 130 50-135 36-149 • Total number of LCS compounds: 17 Total number of ME compounds: 0 Total number of ME compounds allowed: 1 LCS ME CL validation result: Pass • • • • • S • RPD: Relative Percent Difference. CL: Control Limits 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: (714) 895-5494 • FAX: (714) 894-7501 S Page 28of35 S eurofins Sample Analysis Summary Report Caiscience Work Order: 15-07-0557 Page 1 of 1 Method Extraction Chnist ID Instrument Analytical Location S EPA 6010B EPA 3050B 935 ICP 8300 1 EPA 8081A EPA 3545 669 GC 44 1 V . V . V . V . S V V /> / \ ' V S "V S S . V S S S S Location 1: 7440 Lincoln Way, Garden Grove, CA 92841 5 • 7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL: TV714) 895-5494 • FAX: (714) 894-7501 S Page 29 of 35 eurofins Glossary of Terms and Qualifiers Caiscience Work Order: 15-07-0557 Page 1 of 1 Qualifiers Definition * See applicable analysis comment. - Less than the indicated value. > Greater than the indicated value. 1 Surrogate compound recovery was out of control due to a required sample dilution. Therefore, the sample data was reported without further clarification. 2 Surrogate compound recovery was out of control due to matrix interference. The associated method blank surrogate spike compound was in control and, therefore, the sample data was reported without further clarification. 3 Recovery of the Matrix Spike (MS) or Matrix Spike Duplicate (MSD) compound was out of control due to suspected matrix interference. The associated LCS recovery was in control. 4 The MS/MSD RPD was out of control due to suspected matrix interference. 5 The PDS/PDSD or PES/PESD associated with this batch of samples was out of control due to suspected matrix interference. 6 Surrogate recovery below the acceptance limit. 7 Surrogate recovery above the acceptance limit. B Analyte was present in the associated method blank. BU Sample analyzed after holding time expired. - BV Sample received after holding time expired. Cl See case narrative. E Concentration exceeds the calibration range. ET Sample was extracted past end of recommended max. holding time. HD The chromatographic pattern was inconsistent with the profile of the reference fuel standard. HDH The sample chromatographic pattern for TPH matches the chromatographic pattern of the specified standard but heavier hydrocarbons were also present (or detected). HDL The sample chromatographic pattern for TPH matches the chromatographic pattern of the specified standard but lighter hydrocarbons were also present (or detected). J Analyte was detected at a concentration below the reporting limit and above the laboratory method detection limit. Reported value is estimated. JA Analyte positively identified but quantitation is an estimate. ME LCS Recovery Percentage is within Marginal Exceedance (ME) Control Limit range (+1- 4 SD from the mean). ND Parameter not detected at the indicated reporting limit. 0 Spike recovery and RPD control limits do not apply resulting from the parameter concentration in the sample exceeding the spike concentration by a factor of four or greater. SG The sample extract was subjected to Silica Gel treatment prior to analysis. X % Recovery and/or RPD out-of-range. Z Analyte presence was not confirmed by second column or GC/MS analysis. Solid - Unless otherwise indicated, solid sample data is reported on a wet weight basis, not corrected for % moisture. All QC results are reported on a wet weight basis. Any parameter identified in 40CFR Part 136.3 Table II that is designated as 'analyze immediately" with a holding time of <= 15 minutes (40CFR-136.3 Table II, footnote 4), is considered a "field" test and the reported results will be qualified as being received outside of the stated holding time unless received at the laboratory within 15 minutes of the collection time. A calculated total result (Example: Total Pesticides) is the summation of each component concentration and/or, if "J' flags are reported, estimated concentration. Component concentrations showing not detected (ND) are summed into the calculated total result as zero concentrations. 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Caiscience Environmental Laboratories, Inc. CHAIN ODY RECORD 7440 Lincoln Way, Garden Grove, CA 92841-1427. (714) 895-5494 WO # / LAB USE ONLY Date— For CUST Other CA office locations: Concord and San Luis Obispo I For courier service I sample drop off information, 15-117-10557 . Page__ of .3 contact salescalscience.com or call us. LABORATORY CLIENT: CLIENT PROJECT NAME / NUMBER: P.O. NO.: \ In ADDRESS: .5-1 14.1 i'C() WA/-PR JECT CONTACT: :)hY'\-F~4416 SAMPLER(S): (PRINT) I lew\ CITY S ATE( TEL: EM XL-r ai .\S' . REQUESTED ANALYSES TURNAROUND TIME: [:1 SAME DAY [1124 HR []48HR [:172 HR STANDARD - - [1 COELT EDF GLOBAL ID LOG CODE . EF SPECIAL INSTRUCTIONS: - - - to C.0 C14 uj CL On to 04 90, --; LL CL CL I- 0 )< 8 > w o . B USE LA ON SAMPLE ID SAMPLING MATRIX NO. OF ON Y DATE TIME CONT. 0.. Li.. I- I- I- > 0 W Cl) CL CL a- 2 -2 7 /8 4 2)J2 -2 7 1 /4' iL 7/ 6 - L '7J I/o coS I/&fZ - L±_- 71 o - 1;t2. __- 4 ç -5- VO - Relinquished 0y:nXag) Received ijej V)' \J IV 1 3 3 by: (Sig natuAffihiation) D7q/ Timef \.J bIsTRIBUTior"i: White with final report, Green and Yellow to Client. 01/01/12 Revision e that th' Grn and Awaiewes ..•... 0• 0•• cuence Environmental Laboratories, Inc. 7440 Lincoln Way, Garden Grove, CA 92841-1427• (714) 895-5494 WO#/LAB USE ONLY Other CA office locations: Concord and San Luis Obispo For courier service I sample drop off information, contact salescalscience.com or call us. ........... CHAIN OF CUSTODY RECORD Date Page _ of___________________ LABORATORY CLIENT: .NC- CLIENT PROJECT NAME I NUMBER: \K'M-1F1aMk1\ 0 P.O. NO.: ADDRESS:. 5 PROJECT CONTACT: 9v1PLER(S): (PRINT) CITY STATE q ZIP CIcjo4 TEL. J~E-MAIL: O 3IS5 REQUESTED ANALYSES TURNAROUND TIME: EISAME DAY [124 HR LI48HR E172 HR LTANDARD - COELT EDF GLOBAL ID LOG CODE 06 CL SPECIAL INSTRUCTIONS: - - 0 Of L) Uj 00 c co C.00 0- . LL a. I— a. I— a. I— . 2 M LU F- CO 0 > 0 W 8 > Cl) <I, 0- 22, 0 0- a. cj I— 5 C.) LAB USE SAMPLE ID SAMPLING ___ ___ MATRIX NO. OF ONLY DATE TIME CONT. .._ E4 - L 3---2- f(, f-i.t 7/ ,:'Z. __ LfE (a-1--a 17 S -- 6 :3 L 7/ 9:Ll/ --- - elinquished by: ( ure) Re i d by: ig ure/Affiliation) Date Tim I qui d bi i re) y: ( gnature/Affiliation) . Date: . Time: i3 -. -_... e . O-ilocltc I quiMre) ,, R et, ed by: (Signature/Affiliation) :" . Date: z (-1 Time: ,P~-o I (ç ITRJBUTlON: White with final report, Green and Yellow to Client. ' 01/01/12 Revision ITè note that pages 1 and 2 of 2 of our T/Cs are printed on the reverse side of the Green and Yellow copies respectively. Return to Contents Caiscience Environmental Laboratories, Inc. [] SoCal Laboratory NorCal Service Center 7440 Lincoln Way 5063 Commercial Circle Suite H WO # / LAB USE ONLY Garden Grove, CA 92841-1427 Concord, CA 94520-8577 (714) 895-5494 (925) 689-9022 Lj~- CHAIN OF CUSTODY RECORD i /JC Date Page of •13 LABORATORY CLIENT: CLIENT PROJECT NAME / NUMBER: P.O. NO.: \/pftM IlLJ1(L15f ADDRESS: 5 '7L _ttt WoA1 PROJECT CONTACT: i SAJtt)IjER(S):kPRINT). CITY STATE 92 ZIP TEL E-MAIL:oots - ov REQUESTED ANALYSES .- 5 TURNAROUND TIME: LI SAME DAY 11124 HR 48 HR[:]72 HRSTANDARD __________ 14- 9 fl COELT EDF GLOBAL ID LOG CODE CM SPECIAL INSTRUCTIONS: — — Cl> cc cc LU 00 cli Z5 CD .2? ' 0- 0 0- 'a: 0- W I— C'J 0 ' - 8 > a) w - C) () - Ca .S USE SAMPLE ID SAMPLING MATRIX 5? ONLV DATE TIME CONT. 0 LL. I— I— I— a > 0 w 0) 0- 0.. 0.. I— C) JksIi:i ____ __ 33 L__ L /10 L __- k44 T . .... -C .71Z t ....... 00e- nquished by: Si _— — — ReCc (Saiation — —Dat Tffe — i_by'_na_re) A R 'ghature/Affiliation) Dat : I_ T me: ature) - -t_oi RI Wed by: Signature/Affiliation) Date.'; Time: _ ' "—DSTRIBUTlON: White with final report, Green and Yellow to Client. ' I 09/01/13 Revision Please note that pages 1 and 2 of 2 of our T/Cs are printed on the reverse side of the Green and Yellow copies respectively. I ..........S.....S.I..OI.S•S.••I•••••1SIIS••• Cascence Environmental Laboratories Inc CHAIN OF CUSTODY-RECORD 7440 Lincoln Way, Garden Grove, CA 928411427o. (714)895-5494. . .... IWO #I.IAB.USE ONLY -7 / Other CA office locations: Concord and San Luis Obispo .. . Date I , I For courier service I sample drop off information, . contact saIescalscience.com or callus.. . . . Page .. of. LABORATORY CLIENT: 5o1 L3 JNI C_ ADDRESS: CLIENT PROJECT NAME I NUMBER: \P3-' \\ jS\. P.O NO.: .. ... 7 L_J PROJECT CONTACT: j SAMPLER(S): (PRINT) CITY 1a STATE IP bo E-MAIL: cC)SOlLSUJC.COc'Th REQUESTED ANALYSES TURNAROUND TIME: . . . [1 SAME DAY [124 HR [148 HR 072 HR []TANDARD . . CD . . .. [1COELT EDF GLOBAL ID LOG CODE 0 . . . co a ..CJR co SPECIAL INSTRUCTIONS: - -. co a CL CIA M / -- . W . ) S u 0.. U- - LI.. . C a. : ct c a. CL ui w I— .co CO 0 0 > cli CD 0 0 C.) W CN co <) C) CO > 0.. 0.. jjjr CL f 0 LAB . USE oriLY SAMPLE ID MATRIX No . . OF CONT. DATE TIME - 71 !- - —1 //c -7 9 L j )Jj c _44" 7 (c q JS 7M 9-i/ - -_ P,\e.linquished by: (qi!T~ure) I — — Re7 ffiatIon 7 — — o9cflc T6V RlirquisKdd b :-( nkire) / Re ce' 'b : (S If nature/Affiliation) . Date: Ti e: (RelirjqlJished b: (Signature) Reeled by: (Signature/Affiliation) Date: Time: DISTRIBUTION: White with final report, Green and Yellow to Client. 01/01112 Revision Please note that pages 1 and 2 of 2 of our T/Cs are printed on the reverse side of the Green and Yellow ce 'tpectively. Return to Contents Cascence EnvronmentaIi Laboratoriles, Dnc CHAN OF CUSTODY RECORD 7440 Lincoln Way Garden Grove CA 92841-1427 0 (714) 895 5494 WO #1 LAB USE ONLY \0\ \ \S Other CA office locations Concord and Sant , uis Obispo Date_____________________________________ ff For courier service I sample drop off information contact sales(äcalscience.comor call us. - -' Page of_________________ LABORATORY CLIENT V' CLIENT PROJECT.NAME /NUMBER: P.0: N0:. vt ADDRESS LI -PR JECT CONTACT: I . S MPLER(S):-(RiNT) jJ IALI CITY SATE( nu ic / { TEL , EMAI TED ANALYSES -REQUES - - - TURNAROUND TIME: LISAME DAY [124 HR E148 HR [172 HR 'L1STANDARD fl COELT EDF GLOBAL ID LOG CODE . I SPECIAL INSTRUCTIONS: co / /to 0 CL 0.. U) / 0 0 - CID ç:- C4 co C0 to 03 00 CD LL- 0 0.. 0.. 1— 0 > a, .00 LAB USE SAMPLE ID SAMPLING MATRIX ONLY DATE TIME CONT. D 0- Li.. I— I— I— a > 0 w c, 0.. 0- 0 i— c, b ..- -; .- - ) . . . - J/( - J) -- _____________L)__- X. Relinquished y: '(Signtqre) 01 Received y: (Signature/Affiliation) Da e: I -- Ti e T I /) - (2__/JT ed)YIture)/ Dat Time RecirpnatureIAffthatIon) FeliriEjii/sléd by: (ignatue Red by: Signature/Affiliation) Date: Time: DISTRIBUTION: White with final report, Green and Yellow to Client. 01/0 12 evisi n . • • 0•• 0• 0•••• Page 35 of 35 eurofins WORK ORDER NUMBER: 1507 Calscience SAMPLE RECEIPT CHECKLIST COOLER I OF CLIENT: &EQSOIt IK... DATE: 07 / oq /2015 TEMPERATURE: (Criteria: 0.000 - 6.000, not frozen except sediment/tissue) Thermometer ID: SC5 (CF:-0.2°C); Temperature (w/o CF): c • ' 00 (w/ CF): 00; 0'Blank El Sample O Sample(s) outside temperature criteria (PM/APM contacted by: O Sample(s) outside temperature criteria but received on ice/chilled on same day of sampling 0 Sample(s) received at ambient temperature; placed on ice for transport by courier Ambient Temperature: 0 Air 0 Filter Checked by: CUSTODY SEAL: Cooler 0 Present and Intact 0 Present but Not Intact 0<ot Present 0 N/A Checked by: Sample(s) 0 Present and Intact 0 Present but Not Intact /Not Present 0 N/A Checked by: SAMPLE CONDITION: Yes No N/A Chain-of-Custody (COC) document(s) received with samples ....................................................0 0 COO document(s) received complete ..................................................................................0 0 0 Sampling date 0 Sampling time 0 Matrix 0 Number of containers 0 No analysis requested 0 Not relinquished 0 No relinquished date 0 No relinquished time Sampler's name indicated on COO .....................................................................................0 0 Sample container label(s) consistent with COO .....................................................................1/ 0 0 Sample container(s) intact and in good condition ..................................................................0 0 Proper containers for analyses requested .............................................................................0 0 Sufficient volume/mass for analyses requested .......................................................................0 0 Samples received within holding time ..................................................................................0 0 Aqueous samples for certain analyses received within 15-minute holding time pH 0 Residual Chlorine 0 Dissolved Sulfide 0 Dissolved Oxygen ..............................0 0 IV Proper preservation chemical(s) noted on COO and/or sample container ....................................0 0 Unpreserved aqueous sample(s) received for certain analyses O Volatile Organics 0 Total Metals 0 Dissolved Metals Container(s) for certain analysis free of headspace ...............................................................0 0 jZ O Volatile Organics 0 Dissolved Gases (RSK-175) 0 Dissolved Oxygen (SM 4500) O Carbon Dioxide (SM 4500) 0 Ferrous Iron (SM 3500) 0 Hydrogen Sulfide (Hach) TedlarTM bag(s) free of condensation .................................................................................0 0 ,21' CONTAINER TYPE: (Trip Blank Lot Number: Aqueous: 0 VOA 0 VOAh 0 VOAna2 0 IOOPJ 0 100PJna2 0 I25AGB 0 125AGBh 0 125AGBp 0 125PB 125PBznna 0 25OAGB 0 2500GB 0 2500GBs 0 250PB 0 250PBn 0 500AGB 0 500AGJ 0 500AGJs O 500PB 0 IAGB 0 1AGBna2 0 1AGBs 0 1PB 0 1PBna 0 0 0 0 Solid: 4ozCGJ 0 8ozCGJ 0 16ozCGJ 0 Sleeve (_) 0 EnCores® (_) 0 TerraCores® (_) 0 Air: 0 TedlarTM 0 Canister 0 Sorbent Tube 0 PUF 0 Other Matrix (_): 0 0 Container: A = Amber, B = Bottle, C = Clear, E = Envelope, G = Glass, J = Jar, P = Plastic, and Z = Ziploc/Resealable Bag Preservative: b = buffered, f = filtered, h = HCl, n = HNO3, na = NaOH, na2 = Na2S203, p = H3PO4, Labeled/Checked by: _______ s = H2SO4, u = ultra-pure, znna = Zn(CH3002)2 + NaOH Reviewed by: 2015-04-10 Revision I - N APPENDIX C COMMUNITY HEALTH AND SAFETY PLAN / S N / \ / I S / 7 /\• / /5 _/ S 'N / N / N / GeoSoils, Inc. COMMUNITY HEALTH AND SAFETY PLAN Site Identification The subject site consists of a quadrilateral-shaped property located at 1 835 Buena Vista Way in Carlsbad, San Diego County, California (see Figure 1, Site Location Map). The site is bounded by McCauley Lane and existing residential development and a church to the southeast, by Buena Vista Avenue and residential development to the northwest, and by Valley Street and existing residential development to the southwest, and a house, and former nursery to the northeast. According to the 50-scale grading plans for Yada Family Farm Subdivision, prepared by bHA, Inc. (bHA, 2017), site elevations range between approximately 158 to 195 feet (unknown datum) for an overall relief of about 37 feet. Topographically, the site gently slopes to the southwesterly direction. The overall gradient of the site is on the order of 8:1 (horizontal:vertical [h:v]) or flatter. Existing onsite structures include a one-story single-family residence and single-story structures and shade canopies associated with the formerly existing nursery. Based on a review of the grading plans by bHA (2017), GSl understands that the existing residential structure will remain as one lot; however, the existing agricultural facilities will be removed and the site prepared for the construction of 12 new lots for residential development. Two bioretention-basins will be located on either side of the proposed entrance parallel to Valley Street, and are to be maintained by the Homeowner Association. Cut and fill grading will be necessary to achieve the design grades. Maximum planned cut and fill slopes ranging up to ±15 and 11 feet high, respectively, at a 2:1 (h:v) inclination, or flatter, are proposed. Maximum planned cut and fill thicknesses ranging up to ±8 and 7 feet, respectively, are proposed. The impacted soil is proposed to be placed at depths ranging from 10 to 26 feet below ground surface (BOS), in Yada Place, and to a lessor extent (> 7 feet), within the front ±10 feet of the lots adjoining that street. We understand that the proposed buildings would be one- or two-story homes, with attached garages, utilizing typical foundations with slabs-on-grade. Sewage disposal is understood to be tied into the regional municipal system. Building loads are also assumed to be typical for these types of relatively light structures. The need for import soils is unknown. Assessor parcel numbers (APNs) associated with the site are 156-220-01 -00. The site has been proposed to be redeveloped as a 12-lot residential subdivision. Evaluation of Potential Public ExDosure to Hazards The site consists of approximately 3.79 acres of land which has been predominantly used for agricultural purposes since at least 19. In 2015 a Phase I and Limited Phase II Soil Evaluation was conducted on the site resulting in the collection ofatotal of 24 soil samples from 8 locations for the analysis of residual pesticides. Pesticide analysis identified localities where the presence of toxaphene at concentrations that exceed the CaliforniaHuman Health Screening Levels (CHHSL5) for residential soils existed. Other GeoSoils, Inc. fl /T11S 4VI: tjk [ .L12.5 _ LAGUNA High Sch PG. ç S 0 1000 2000 3000 4000 Base Map TOPO 2003 Naional Gographic, U.S.G.S. San Luis Rey Quadrangle, Ca ifornia -- San Diego Co., 7.5 Minute, dated 1997, current, 1999. Bas Map: Google Vaps, Copvrit 2015 Google, Map Da1a Copyright 2015 Google This ul nap 's copyrighted by Gcogle 2005. It is unlaw to copy or rep 'oduce all or any part t0v2re0f, whether for personal use or resale, withou' perrlission. All righs reser,ed. A SITE LOCATION MAP N Figure 1 pesticide constituents, including 4-DDE and 4,4-DDT were detected at concentrations below action levels indicated by the CHHSLs. . Based on the results of the investigations, soil impacted with toxaphene at concentrations above the CHHSLs existed from the surface to a maximum depth of ±1.0 foot below O ground surface. The depth of migration of the pesticides appeared to be primarily due to agricultural activities over time. Soil encountered during the investigations generally consisted of dark brownish gray to light brown sand to silty sand, and was generally damp to wet. The proposed property developer (California West Communities) plans to excavate and stockpile onsite soil with toxaphene concentrations above the site cleanup levels . discussed above. All soils with toxaphene concentrations above the site cleanup level, will be placed in an excavation created onsite and have a minimum cover of 10 and 7 feet, in street right-of-way and residential areas, respectively, to avoid contact with utilities, workers, and residents. This soil will generally be placed well above 5 feet from the highest anticipated groundwater level. Grading of the site will involve heavy earth-moving . equipment to excavate the impacted soil and deposit these soils within specifically placed excavations. Clean imported fill material will cover the impacted soil and compacted upon which improvements can be safely placed. The excavation and movement of toxaphene impacted soil will pose an exposure concern. Specifically, the exposure of toxaphene . through inhalation, dermal contact, and ingestion or airborne dust particles would pose the greatest public health concern. Additionally, noise and hazards associated with large moving equipment will also presented by earth grading operations. S Based on the site's location within a predominantly residential area, proper protocols will need to be in place during the remedial activities to reduce exposure to potential health hazards. Contaminant Characteristics Toxaphene was the only pesticide found at the site at concentrations that exceeded State and Federal screening levels. All other pesticides were found to be significantly below levels which pose as a human exposure concern (RSLs). Therefore, this study will focus . on the characteristics and occurrence of toxaphene impacted soil. Toxaphene is - non-combustible, highly toxic when ingested in sufficient concentrations, and has a strong bond to soil grains. Based on onsite analytical testing, toxaphene is not water soluble and, therefore, does not migrate or represent a concern for groundwater contamination. Toxaphene does not diffuse in air; therefore, if buried, contaminant vapor migration is not a concern. The Occupational Safety & Health Administration (OSHA) recommended a maximum average amount of air exposure of toxaphene to workers to not exceed 0.5 micrograms per S cubic meter of air (mg/m3) per 8-hour workday over a 40-hour work week. The National Institute of Occupational Safety & Health (NIOSH) currently does not have a recommended limit for up to a 10-hour workday over a 40-hour workweek. Community and Health Safety Plan GeoSoils, Inc. W.O. E7377-SC Page 3 File:e:\wpl2\env\e7300\e7377.pmp • • According to the International Agency for Research on Cancer (IARC), toxaphene is classified as Group 2B carcinogen (possibly carcinogenic to humans [IARC, 2009]). The National Toxicology Program (NIP) has determined that toxaphene is reasonably anticipated to be a human carcinogen (NIP, 2005), and the United States Environmental Protection Agency (US EPA) has classified toxaphene as a B2 carcinogen (probable human carcinogenic [IRIS, 2010]). The American Conference of Governmental Industrial Hygienists (ACGIH) has classified toxaphene as an A3 carcinogen (confirmed animal carcinogen with unknown relevance to humans [ACGIH, 2009]). The U.S. Department of Agriculture (USDA) prohibited all uses of toxaphene in 1990. In 1982, however, the US EPA cancelled the registration of toxaphene for use as a pesticide, except for use on livestock, in emergency situations. According to Agency for Toxic Substance and Disease Registry (ATSDR), no studies are available on the effects of acute inhalation exposure to toxaphene in humans or animals (ATSDR, 1996). Acute oral exposure to toxaphene in humans results in Central Nervous System (CNS) stimulation, with the major effect being convulsive seizures. The dose necessary to induce nonfatal convolutions in humans is approximately 10 milligrams per kilogram body weight per day (mg/kg/day [ATSDR, 1996]). Animal studies have reported effects on the liver, kidney, and CNS from acute oral exposure to toxaphene. Additionally, animal studies have reported development effects, including behavior effects and immunosuppression, in offsprings of rats exposed orally to toxaphene. Several studies have reported no reproductive effects from oral exposure to toxaphene in rats (ASTDR, 1996). Methods of Exposure The primary onsite source of contamination was the legal application of agricultural pesticides. The secondary source of contamination is the soil grains that the pesticides have bound to. The primary mode of transportation is wind and earth-moving operations during proposed grading. Additionally, a less likely mode of transportation is bioaccurnulation of pesticides in plant material such as edible fruit and vegetables. The direct exposure to toxaphene impacted soil through ingestion, inhalation, and dermal contact is the main human health concern. Activities that involve the handling of impacted soil, such as gardening and home improvements that involve excavation work, may result in exposure. Bioaccumulation results in the uptake of chemical pesticides into edible fruits and vegetables, and is not known to occur onsite. The burial of the impacted soil to a depth of 26 feet below ground surface, or fill depths as directed by the site civil engineer to avoid contact with utilities, beneath soil containing pesticide-impacted soil at non-detect to below the site cleanup levels, would eliminate the risk of plant uptake and human contact of toxaphene at concentrations above the CHHSLs. Inhalation of airborne dust is another route for exposure to toxaphene. The US EPA Integrated Risk Information System has not published a reference concentration for toxaphene for chronic inhalation exposure. Due to the chemical characteristics of Community and Health Safety Plan W.O. E7377-SC File:e:\wpl2\env\e7300\e7377.pmp GeoSoils, Inc. Page 4 S toxaphene vapor intrusion, leaching, and groundwater impacts are not applicable concerns • S Monitoring To date, GSI is unaware of any monitoring devices that detect toxaphene concentrations in real time. Air samples can be collected the glass fiber filter method; however, samples would require analysis at an offsite fixed laboratory and would be of little to no use in the field. Therefore, GSl does not recommend air monitoring. Perimeter Air Monitoring There are currently no regulatory action levels for short term community exposure to . airborne organochiorine pesticides such as toxaphene. The United States Environmental Protection Agency (US EPA) has developed Regional Screening Levels (RSLs), which were developed to replace and update the information in the document entitled Region 9 Preliminary Remediation Goals (PRG) 2002 Update, dated November 1, 2002, revised November 2010, and subsequently revised in November 2017. The designated RSL values S are for airborne contaminants in a residential land use scenario. These designated values, however, assume that the resident is exposed to airborne concentrations of the S contaminant for 24 hours a day, 7 days a week, and 365 days a year. Accordingly, the RSL values would be very conservative to use for the anticipated short term exposures associated with organochiorine pesticide bearing soil dust generated from the proposed excavation and disposal activities. Based on other studies completed in the area, GeoSoils, Inc. (GSI) has calculated an airborne contaminant concentration limit or modified RSL for toxaphene based on a more realistic exposure scenario of 8 hours a day, 7 days a week, and a maximum of 20 days . of exposure, which in GSI's opinion is acceptable conservative for exposure scenarios. Attachment presents the RSL calculations. This limited-term exposure scenario assumes excavation, grading, and soil disposal activities associated with the disposal of toxaphene impacted soil are completed within a total of 20 days of work. The modified Site-specific . RSL was calculated using the above-referenced Site-specific assumptions and the RSL formula used by the US EPA. This formula is used for the calculation of RSLs for airborne concentrations of contaminants corresponding to a typical de minimis theoretical excess lifetime cancer risk of one in a million (1E-06). This Site-specific RSL value is presented on the following table: Community and Health Safety Plan W.O. E7377-SC File:e:\wpl2\env\e7300\e7377.pmp GeoSoils, Inc. Page 5 Modified Single Modified Cumulative Toxaphene RSL (uglm3) Toxaphene RSL (uglm3)* 12.1 6.05 *The final RSL was further adjusted by dividing the RSL by a factor of two to account for cumulative cancer risks. RSL = Regional Screening Level l ug/m3 = Micrograms per cubic meter Perimeter air monitoring will be conducted at the Site utilizing low-volume sampling pumps, calibrated to a daily flow rate of approximately one liter per minute. The low-volume sampling pump will pump air through a filter/solid sorbent tube, which will be analyzed for toxaphene in accordance with the National Institute of Occupational Safety and Health (NIOSH) Method 5600 (Attachment B). Analytical laboratory testing will be conducted at California State-certified laboratory within 24 hours of obtaining the sample. Prior to conducting excavation and soil disposal activities at the Site, GSI will collect perimeter air monitoring samples at three locations based on predominant wind patterns at the Site. Samples will be obtained at the south, north, and east perimeters of the Site to evaluate background airborne concentrations of toxaphene in general accordance with NIOSH Method 5600. The approximate locations of the proposed air monitoring stations are depicted on Plate 1. During the initial three or four days of excavation and soil disposal activities, perimeter air monitoring samples will be collected from the designated locations. The air samples will be analyzed for toxaphene in general accordance with NIOSH test method 5600 to assess potential exposure to the surrounding community. In addition, dust meters will also be placed at the air monitoring stations to measure total dust generated from the construction activities. Based on the results of the air monitoring for toxaphene and the total dust readings during the initial days of excavation and soil disposal activities, an environmental scientist will evaluate the collected data, and statistically assess whether or not there is a correlation between concentrations of toxaphene and total dust measurements. If a direct correlation is established, and action level for toxaphene will be established based on the relationship of the total dust measured as total particulate concentrations in air to toxaphene concentrations. The established action level will be total dust measurement at which toxaphene concentrations are below the modified RSL. As the excavation and disposal operations proceed, GSI will collect dust meter readings at the metering stations every hour during earthwork operations. The results of the dust meter readings will be compared to the established action levels and the National Ambient Air Quality Standards (NAAQS) for particulate matter (PM1 0) of 150 ug/m3. The locations of the dust meters, the time of sampling, and range of measured concentrations will be Community and Health Safety Plan W.O. E7377-SC File:e:\wpl2\eriv\e7300\e7377.pmp GeoSods, Inc. Page 6 recorded in a daily log by GSI field personnel. It total dust readings exceed the lowest of the established action levels or NAAQS standards, dust suppression efforts at the Site will be increased or construction operations will be stopped. The SAM Project Manager will be notified of air sampling exceedances the next business day. The notifications will . include the action taken to abate the exceedance and follow-up sampling will be conducted and reported to ensure abatement activities were successful. Perimeter air sampling will be conducted at the three proposed locations on a weekly basis . to assess the relationship between total dust and toxaphene. In addition, wind direction and speed monitoring will be conducted and documented using a portable apparatus. The perimeter air monitoring will be performed until confirmation samples indicate that the mitigation criteria have been met and the placement of a clean soil cap overlying the toxaphene impacted soil has been constructed. Following the initial three days of quantitative air sampling and laboratory analysis, the subsequent weekly air sampling would continue to be conducted from all six air monitoring stations; however, only the downwind air monitoring stations would be submitted for laboratory analysis, provided the wind direction remains relatively consistent during the sampling period. The weekly air samples collected from the other locations (the crosswind or upwind samples) will be placed on hold and maintained at zero degrees Celsius at the laboratory for 30 days. Should public complaints regarding potential exposure be received and need . to be further addressed, these samples should then remain valid for 30 days following collection. If possible, the dust concentration from quantitive sampling events will also be reported by the laboratory. GSI will meet with the developer and grading contractor to discuss the soil disposal plan, air monitoring, sequencing, and duration of work. If any information changes that may impact perimeter air monitoring, the DEH will be contacted and an additional addendum to the Community Health and Safety Plan will be submitted to the DEH for approval. Confirmation Sampling Once excavated to the planned dimensions, approximately 10 confirmation soil samples will be collected from the base of the 2-foot excavations throughout the site. Mass grading will not continue until test results indicate that the constituents of concern are below residential RSLs (the cleanup goal). The confirmation samples will be collected directly into laboratory-provided sampling jars, properly labeled, and placed in a chilled cooler for transport to the laboratory under chain- of-custody protocol. The samples will be analyzed for organochlorine pesticides (USEPA Test Method 8081 A, using a 24-hr rush turnaround. Community and Health Safety Plan W.O. E7377-SC FiIe:e:\wpl2\env\e7300\e7377.pmp GeoSods, Inc. Page 7 Engineering Controls The following engineering controls will be utilized in order to reduce the risk of human exposure to toxaphene contaminated soil during remedial activities: Dust - During excavation and stockpiling activities, copious amounts of water must be applied to the soil in order to suppress dust particles from becoming air-borne. Additionally, toxaphene impacted soil must not be disturbed if winds exceed 13 miles per hour (mph). All stockpiled soils must be covered with heavy grade plastic sheets while water suppression is not employed, particularly during non-working hours. Adequate watering of the site for dust suppression purposes should address County Air Pollution Control District (ACPD) Rule 55, as indicated above. Water should minimally be sprayed prior to daily work activities, and during excavation/loading and placement activities. Watering equipment will be continuously available to provide proper dust control. Site Security The site will be fenced and gated, limiting access to only those authorized to be onsite. Noise Equipment operation times will be dictated by the City of Carlsbad, Zoning Ordinances. The site is surrounding by residential neighborhoods. It is anticipated that noise may be an issue which will require some level of cooperation between the developer and the surrounding neighborhoods, as on any construction project. Open Excavations -. Given the size of the potential excavations, it will be required to have them remain open over-night. As a result, safety for entering an excavation due to illegal entry is a concern after hours. Every effort will be made to backfill excavations at the end of each workday, but for those that remain open, proper fencing and flagging of the excavation will occur after operating hours. In addition, proper slopes will be maintained as well as one open end for ease of entry and exit from the excavations. Soil Management To ensure that impacted soil is not carried offsite, all vehicles and equipment should be inspected prior to exiting the site. If significant amounts of soil are trapped within the tires or under-carriage of vehicles, the soil should be removed prior to the vehicle exiting the site. During and at the end of each day, any soil deposited outside the exit of the site should be swept up and returned to the site for proper management. Community and Health Safety Plan W.O. E7377-SC FiIe:e:\wpl2\env\e7300\e7377.pmp GeoSoils, Inc. Page 8 Best Management Practices If site development is required during rainy periods, care should be taken to minimize the negative effects. Typically, the City has recommended that no work be conducted when the potential for rain is above 40 percent. Reasonable judgment should be used to determine the significance of the potential rainfall event and how it might affect the remedial grading activities. If a significant rainfall event is anticipated or occurs during construction operations, necessary measures must be taken to minimize erosion of stockpiles and limit soil erosion from offsite migration. As is the standard during construction, the developer will retain a consultant to produce a Storm Water Pollution Prevention Plan (SWPPP), which will include the overall project. In the event of a runoff- producing precipitation event, the Best Management Practices (BMPs) that would be employed during remedial excavation and grading operations should be placed on the perimeter of the entire site, and are shown on Plate 1. Since combinations of BMPs would already be in place for the overall project (i.e., diversion ditches, fiber rolls, etc.), and considering that during proposed mitigation, the excavations would be well below grade, the BMPs would consist of silt fences and/or filter roll barriers used in conjunction with the site SWPPP, which would also include routine protection of storm drain inlets with filter fabric and sand/gravel bag barriers. Site Safety Officer The designated project superintendent chosen by California West Communities will serve as the Site Safety Officer. GSI will assist the Site Safety Officer in areas where they are unfamiliar with site safety. The job of the Site Safety Officer will be to monitor dust control and ensure that the site is only accessed by authorized personnel. In the event of an emergency, the Site Safety Officer will have the authority to shut down site activities and the knowledge to notify the appropriate emergency responders. Emergency Planning Toxaphene is non-flammable and does not represent a fire or explosion concern. In the event of an emergency where site activities are halted, necessary measures must be taken to ensure that contaminated soil does not leave the site. All stockpiles must be covered and trenches must be fenced. If in the event of an emergency, the Site Safety Officer must notify the following agencies or individuals: City of Carlsbad Engineering Inspector: (760) 438-4178 City of Carlsbad Fire Department: 911 or (760) 931-2141 San Diego Department of Environmental Health: Coleen Hines- (858) 505-6874 Community and Health Safety Plan W.O. E7377-Sc File:e:\wpl2\env\e7300\e7377. pmp GeoSoils, Inc. Page 9 Public Notification Prior to the implementation of the proposed work, public notices will be mailed or hand-delivered to neighboring residences contiguous to the subject property. The notices will identify the proposed work, days and hours of operation, and an estimated schedule of the project. Details will include: Site Safety Officer's and GSl's contact information, identification of potential concerns including dust and noise; a brief description of planned activities, and the Proposition 65 Warning of the potential exposure to chemicals known or suspected by the State of California to cause cancer. Notices will also be placed on the fence surrounding the site's perimeter immediately prior to start of construction activities. GSI will prepare a Public notification Letter for distribution to the neighbors using the example provided in the most recent San Diego County Department of Environmental Health Site Assessment and Mitigation Manual. Traffic Control Plan The site is located within a residential area of Carlsbad. The main roadway to access the site (Valley Street) consist of a two-lane paved road with no parking allowed on the shoulder. Additionally, there are no sidewalks along Valley Street. Trucks and all other vehicles should be aware of the following precautions: The maximum speed limit on 2-lane residential roads is 25 miles per hour (mph). Large trucks should limit their speed to 20 mph to account for their longer stopping distance; Due to the lack of sidewalks, residents may be walking in the street. Drivers of trucks and other vehicles must be alert at all times. Community and Health Safety Plan W.O. E7377-SC File:e:\wpl2\env\e7300\e7377.pmp GeoSoils, Inc. Page 10 ATTACHMENT A REGIONAL SCREENING LEVEL CALCULATIONS FOR AIRBORNE TOXAPHENE Equation Used to Calculate Modified Screening Levels in Air for Monitoring Community Inhalation Exposure During Site Soil Excavation and Disposal The following standard equation for calculating inhalation cancer risk (US EPA, 1989) was used to calculate the modified Regional Screening Level (RSL) for residential receptors. [InhRxC.xFDExEFxED1 TCR=I ]CSF [ BWxAT ] Where: TCR = target cancer risk (unit less) lnhR = adult inhalation rate (m'/day) Cair = concentration in air, modified RSL (mg/m3) FDE = fraction of day exposed (unit less) EF = exposure frequency (days/year) ED = exposure duration (year) BW = adult body weight (kg) AT = average time for a carcinogen (days) CSF flh = inhalation cancer slope factor (mg/kg/day)-' The following equation for toxaphene assumes a target cancer risk of 1 E-06, and assumes standard adult residential exposure of 8 hours per day. FDE = 8/24 or 0.33. The duration of construction activity (EF) is assumed to be 20 days, within a single year (ED). 20 -- x C. x 0.33 x 35 x I yr (T-m I x iO 45 I = Ii2 g 70kg x 25.550diys x d4V) Solving for Cair results in a modified RSL for toxaphene of 12.1 E-03 mg/m3, or 12.1 ug/m3. References: USEPA, 1989, Risk assessment guidance for superfund (RAGS), volume 1: Human Health Evaluation Manual (Part A), Interim Final, USEPA. Washington DC, EPA/540/1- 89/002. Community and Health Safety Plan W.O. E7377-SC File:e:\wpl2\env\e7300\e7377.pmp GeoSoils, Inc. Page 11 RSL formula confirmation with current USEPA RSLs for residential air (latest version dated November 2017). CANCER CAR CAR INH RATE FRACTION EXPOSURE CHEMICAL RISK (ug/m3) (uglm3 ) (M3 /day) OF DAY FREQUENCY EXPOSED Toxaphene 9.99E-07 7.60E-03 7.60E-06 20 1 350 Modified RSLs - Residential Air RSLs adjusted for 35-day exposure frequency, 8 hours of exposure per day, and 1-year exposure duration. CANCER CAR CAIR INH RATE FRACTION EXPOSURE CHEMICAL RISK (uglm3) (uglm3 ) (m3lday) OF DAY FREQUENCY EXPOSED Toxaphene 1.00E-06 12.1 12.1E-03 20 0.33 20 / / Community and Health Safety Plan W.O. E7377-SC File:e:\wpl2\env\e7300\e7377.pmp GeoSoils, Inc. Page 12 ATTACHMENT B NIOSH TEST METHOD 5600 GeDSoils, Inc. ORGANOPHOSPHORUS PESTICIDES 5600 Formula: Table 1 MW: Table 1 CAS: Table 1 RTECS: Table 1 METHOD: 5600, Issue 1 EVALUATION: FULL Issue 1: 15 August 1994 OSHA: Table 2 PROPERTIES: Table 3 NIOSH: Table 2 ACGIH: Table 2 SYNONYMS: Table 4 N SAMPLING ' / MEASUREMENT N SAMPLER: FILTER/SOLID SORBENT TUBE (OVS-2 tube: 13-mm quartz filter; XAD-2, 270 mg/i 40 mg) FLOW RATE: 0.2 to 1 LJmin VOL-MIN: 12 L -MAX: 240 L; 60 L (Malathion, Ronnel) SHIPMENT: cap both ends of tube / SAMPLE STABILITY: at least 10 days at 25 °C at least 30 days at 0 °C BLANKS: 2 to 10 field blanks per set ACCURACY / 7 RANGE STUDIED: Table 5, Column A ACCURACY: Table 5, Column B N BIAS: Table 5, Colum'C N OVERALL PRECISION (SrT): Table 5, Column D APPLICABILITY: The working ranges are listed in Table 5. They cover a range of 1/10 to 2 times the OSHA PELs. This method also is applicable to STEL measurements using 12-L samples. This method may be applicable to the determination of other organophosphorus' compounds after evaluation for desorption efficiency, sample capacity, sample stability, and precisiàn and accuracy. OTHER METHODS: This method may be used to replace previous organophosphorus pesticide methods. See Table 10 for partial listing. The OVS-2 tube is similar in concept to the device of Hill and Arnold [ii], but offers greater convenience and lower flow resistance. TECHNIQUE: GC, FLAME PHOTOMETRIC DETECTION (FPD) ANALYTE: organophosphorus pesticides, Table 1 EXTRACTION: 2-mL 90% toluene/i 0% acetone solution INJECTION VOLUME: 1-2iiL N TEMPERATURE / -INJECTION: 240 °C -DETECTOR: 180 °C to 215 °C (follow manufacturer's recommendation) -COLUMN: Table 6 CARRIER GAS: He at 15 psi (104 kPa) COLUMN: fused silica capillary column; Table 6 N DETECTOR: FPD (phosphorus mode) CALIBRATION: standard solutions of organophosphorus compounds in toluene RANGE: Table 8, Column C ESTIMATED LOD: Table 8, Column F PRECISION (ad: Table 5, Column E INTERFERENCES: Several organophosphates may co-elute with either target analyte or internal standard causing integration errors. These include other pesticides (see Table 7), and the following: tributyl phosphate (plasticizer), tris-(2-butoxy ethyl) phosphate (plasticizer used in some rubber stoppers), tricresyl phosphate (petroleum oil additive, hydraulic fluid, plasticizer, flame-retardant, and solvent), and triphenyl phosphate (plasticizer and flame-retardant in plastics, lacquers, and roofing paper). NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94 ORGANOPHOSPHORUS PESTICIDES: METHOD 5600, Issue 1, dated 15 August 1994- Page 2 of 20 REAGENTS: Organophosphorus analytes listed in Table 1. and (optional) triphenyl phosphate, analytical standard grade.* Toluene, pesticide analytical grade.* Acetone, ACS reagent grade or better.* Desorbing solution. Add 50 mL acetone to a 500-mL volumetric flask. Dilute to volume with toluene. NOTE: For optional internal standard, add 1 mL of a 5 mg/mL solution of triphenyl phosphate in toluene to 500 mL desorbing solution. Organophosphorus stock solutions, 10 mg/mL. Prepare individual standard stock solutions of each pesticide of interest in 90/10 toluene/acetone (VN). All pesticides in Table 1 were found to be soluble to at least 10 mg/mL. Spiking solutions for calibration (step 9) and media fortification (steps 10, 11). NOTE: Spiking solutions may contain more than one analyte. Spiking solution SS-1: Dilute the volume of stock solution indicated in column F of Table 11 to 10 mL with toluene or 90/10 toluene/acetone. Spiking solution SS-2: Dilute 1 mL of SS- 1 solution with toluene in a 10-mL volumetric flask. 7 Purified gases: Helium, hydrogen, nitrogen, dry air, and oxygen, (if required by detector). See Special Precautions EQUIPMENT: Sampler: glass tube, 11-mm ID x 13-mm OD x 50 mm long, with the outlet end drawn to a 6-mm o.d. x 25 mm long tube. The enlarged part of the tube contains a 270-mg front section of 20/60 mesh XAD-2 sorbent or equivalent held in place by a 9 to 10-mm o.d. quartz fiber filter and polytetrafluoroethylene (PTFE) retaining ring. The front section is separated from the back section of 140 mg XAD-2 sorbent or equivalent with a short plug of polyurethane foam. The back section is held in place by a long plug of polyurethane foam. The tube is available commercially as the OVS-2 sampler. See Figure 2. NOTE: Some OVS-2 tubes contain glass fiber filters, as specified in the OSHA methods (see Table 10). These tubes, however, did not perform as well for the more polar analytes (amides, phosphoramides, and sulfoxides; see Table 9). Low or erratic recoveries for Malathion may be encountered with glass fiber filters. Personal sampling pump, 0.2 to 1 Llmin. with flexible connecting tubing, preferably silicon, polyethylene, or PTFE tubing. Vials, 4-mL with PTFE-lined cap; 2-mL GC autosampler vials with PTFE-lined crimp caps. Gas chromatograph, flame photometric detector with 525-nm bandpass filter for phosphorus mode, integrator, and column (Table 6). Syringes, 5-mL and 100-, 50-, and 10-mL for making standard solutions and GC injections. Volumetric flasks, 500-, 10-, and 2-mL. Tweezers. GC vial crimper. Small ultrasonic cleaning bath. SPECIAL PRECAUTIONS: Organophosphorus compounds are highly toxic. Special care must be SAMPLING: taken to avoid inhalation or skin contact through the wearing of gloves and suitable clothing when 1. Calibrate each personal sampling pump handling pure material [13-17]. with a representative sampler in line. 2. Connect the sampler to personal sampling Toluene is flammable and toxic. Acetone is highly pump with flexible tubing. The sampler flammable. Prepare all samples in a well ventilated should be placed vertically with the large hood. 14 ,-i,-,,,, 1,,01,A,nrknr'c. hrnn+hinn -7flnfl in CI IU '.JLJVVI I III LI IC VVJIflCI 0 1)1 CC "IJ L.I..II IC III such a manner that it does not impede work performance. [4, 12] 3 Sample at an accurately known flowrate between 0.2 and 1 Limin for a total sample size of 12 to 240 L. NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94 ORGANOPHOSPHORUS PESTICIDES: METHOD 5600, Issue 1, dated 15 August 1994- Page 3 of 20 4. Cap both ends of the sampler with plastic caps and pack securely for shipment. SAMPLE PREPARATION: Remove cap from large end and remove PTFE retainer ring; transfer filter and front XAD-2 section to a 4-mL vial. Transfer the short polyurethane foam plug along with back-up XAD-2 section to a second 4-mL vial. Add 2 mL of desorbing solvent to each vial using a 5-mL syringe or 2-mL pipette. Cap each vial. Allow to stand 30 minutes, immerse vials approximately 15 mm in an ultrasonic bath for 30 minutes. Alternatively, place the vials in a shaker or tumbler for 1 hour. Transfer 1 t 1.5 mL from each 4-mL vial to a clean 2-mL GC vial, cap and label. / CALIBRATION AND QUALITY CONTROL: 9. Calibrate daily with at least six working standards covering the analytical range of the method for individual analytes. N Add known amounts of calibration spiking solution (SS-1 or SS-2 according to schedule in Table 11) to desorbing solution in 2-mL volumetric flasks and dilute to the mark. NOTE: If an internal standard is included in the desorbing solution, then exactly 2 mL of desorbing solution in a volurrietric flask must be concentrated slightly under a gentle stream of nitrogen in order to accommodate the specified volume of the spiking solutions. After adding the spiking solutions to the slightly concentrated desorbing solution, dilute to the 2-mL mark with toluene or 90/10 toluene/acetone. Include a calibration blank of unspiked desorbing solution. Analyze together with field samples, field blanks, and laboratory control samples (steps 12 and 13). Prepare calibration graph (peak area vs. ig analyte), or if internal standard (IS) is used (peak area of analyte/peak area of IS vs. ig analyte). 10. . Prepare Laboratory Control Samples (LCS) with each sample set, in duplicate. / a. Remove cap from large end of sampler tube. Apply 30 ML of spiking solution SS-1 to face of quartz fiber filter. Cap and allow to stand for a minimum of 1 hour. Preferably, these should be prepared as soon as samples arrive and should be stored with the field samples until analyzed. Nb. Include an unspiked sampler as a media blank. c. Analyze along with field samples and blanks, and liquid calibration standards (steps 12 through 16). ii. When extending application of this method to other organophosphorus compounds, the following minimal desorption efficiency (DE) test may be performed as follows: Determine the NIOSH REL, OSHA PEL, or ACGIH TLV in mg/rn 3. Prepare spiking solution SS-1 (refer to Table ii, or use the following formulae, which are specific for the calculation of the weight of analyte to add to 10 mL toluene/acetone 90:10). For REL> 1 mg/rn (assuming 12-L collection vol.), let W = REL x 4 m For REL f~- 1 Mg/M3 (assuming 120-L collection vol.), let W = REL x 40 m where W = weight (mg) of analyte to dissolve into 10 mL of desorbing solvent. Let [SS-1] = WhO mL where [SS-1] = concentration of spiking solution SS-1 in mg/mL. Let [SS-2] = [SS-1] x 0.1 where [SS-2] = concentration of spiking solution SS-2. d. Prepare three tubes at each of five levels plus three media blanks. Concentration at each level may be calculated using formulae in entry 20, part II of Table 11. Remove plastic cap from large end of sampler, apply appropriate volume of spiking solution to face of quartz fiber filter following schedule in part I of Table ii. Cap and allow sampler to stand overnight. e. Prepare tubes for analysis (Steps 5 through 8). f. Analyze with liquid standards (Steps 12 and 13). NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94 ORGANOPHOSPHORUS PESTICIDES: METHOD 5600, Issue 1, dated 15 August 1994 - Page 4 of 20 Prepare a graph of desorption efficiency (DE) vs. pg of analyte. Acceptable desorption criteria for 6 replicates is >75% average recovery with a standard deviation of <±9%. MEASUREMENT: Set gas chromatograph according to manufacturer's recommendations and to conditions listed in Table 6 and on page 5600-1. Inject sample aliquot manually using solvent flush technique or with autosampler. See Table 7 for retention times of selected analytes. NOTE: If peak area is greater than the linear range of the working standards, dilute with desorbing solution or with desorbing solution (containing internal standard) and reanalyze. Apply the appropriate dilution factor in calculations. Measure peak area of analyte and of internal standard. CALCULATIONS: Determine the mass in pg (corrected for DE) of respective analyte found in the sample front (W ) and back (Wb) sorbent sections, and in the media blank front (B ) and back (Bb) sorbent sections. NOTE: The filter is combined with the front section. If W b > W/10, report breakthrough and possible sample loss. Calculate concentration, C, of analyte in the air volume sampled, V (L): C + Wb - Bf - Bb) mg/M3. CONFIRMATION: / Whenever an analyte is detected, and its identity is uncertain, confirmation may be achieved by analysis on a second column of different polarity. If primary analysis was performed using a non-polar or weakly polar column (DB-1 or DB-5), confirmation should be accomplished by reanalysis on a polar column (DB-1701 or DB-210). See Table 7 for approximate retention times for each column type. Fewer analytes co-elute on DB-210 than on DB-1701. Relative retention times are more convenient for the identification of unknown analytes. If Parathion is not used as the retention time reference compound, then another related compound such as tributyl phosphate, Ronnel, or triphenyl phosphate may be substituted. EVALUATION OF METHOD: This method was evaluated over the ranges specified in Table 5 at 25 °C using 240-L air samples. Sampler tubes were tested at 15% and 80% relative humidity and at 10 °C and 30 °C. In these tests, test atmospheres were not generated; instead, analytes were fortified on the face of the sampler filters. This was followed by pulling conditioned air at 1 L/min. for 4 hours. No difference in sampler performance was noted at any of these temperature/humidity combinations. Evaluations of sampler precision and stability were conducted at 30 °C and 15% relative humidity. Overall sampling and measurement precisions, bias, accuracy, and average percent recovery after long-term storage are presented in Table 5. No breakthrough was detected after 12 hours of sampling at 1 Llmin with a sampler fortified with the equivalent of 4x the NIOSH REL. Malathion and Ronnel were tested at 1/40 x REL, Sulprofos at 1/20 x REL (See Table 5, note 4). All criteria [9] were met. NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94 ORGANOPHOSPHORUS PESTICIDES: METHOD 5600, Issue 1, dated 15 August 1994- Page 5 of 20 REFERENCES: Sweet, D.V., Ed., Registry of Toxic Effects of Chemical Substances, DHHS (NIOSH) Publ. No. 87- 114(1987). Merck Index, 11th ed., S. Budavari, Ed., Merck and Co., Rahway, NJ (1989). Farm Chemicals Handbook, Meister Publishing Co., Willoughby, OH (1991). OSHA Stopgap Methods for individual organophosphorus pesticides (Refer to by compound name), Carcinogen and Pesticide Branch, OSHA Analytical Laboratory, Salt Lake City, UT.,' NIOSH Recommendations for Occupational Safety and Health, DHHS (NIOSH) Publ. No. 92-100 (1992). / NIOSH Pocket Guide to Chemical Hazards, U.S. Dept. of Health and Human Services, (NIOSH) Publ. No. 90-117 (1990). NIOSH Manual of Analytical Methods, 2nd ed., v. 1, P & CAM 158; v. 3, S208, S209, S210, S285, S295, and S370; v. 5, P & CAM 295; v. 6, P & CAM 336, S280, S296, and S299, U.S. Dept. Health, Education, and Welfare, (NIOSH) Publ. 77-157-C (1977). NIOSH Manual of Analytical Methods, 3rd. ed., Methods 2503, 2504, 5012, and 5514, U.S. Dept. of Health and Human Services, (NIOSH) Publ. 84-100 (1984) 1. Backup Data Report for Organophosphorus Pesticides, prepared under NIOSH Contract 200-88- 2618 (unpublished, 1992). J & W Catalog of High Resolution Chromatography Products, 1991. Hill, Robert H., Jr., and James E. Arnold. A Personal Air Sampler for Pesticides, &Q!1. Environ. Contam. Toxicol., 8, 621-628 (1979). OSHA Method 62, OSHA Analytical Methods Manual, Carcinogen and Pesticide Branch, OSHA Analytical Laboratory, Salt Lake City, UT. N Criteria for a Recommended Standard ... Occupational Exposure to Malathion, U.S. Dept. Health, Education, and Welfare, (NIOSH) Pub!. 76-205 (1976). Criteria for a Recommended Standard ... Occupational Exposure to Parathion, U.S. Dept. Health, Education, and Welfare, (NIOSH) Pub!. 76-190 (1976). Criteria for a Recommended Standard ... Occupational Exposure to Methyl Parathion, U.S. Dept. Health, Education, and Welfare, (NIOSH) Publ. 77-106 (1976). . Criteria for a Recommended Standard ... Occupational Exposure During the Manufacture and Formulation of Pesticides, U.S. Dept. Health, Education, and Welfare, (NIOSH) Publ. 78-174 (1978). Occupational Exposure to Pesticides.. Report to the Federal Working Group on Pest Management from the Task Group on Occupational Exposure to Pesticides; Federal Working Group on Pest Management, Washington, D.C., January 1974, U.S. Govt. Printing Office: 1975 0-551-026. 1993-1994 Threshold Limit Values for Chemical Substances and Physical Agents, American Conference of Governmental Industrial Hygienists, Cincinnati, OH (1993). METHOD WRITTEN BY: John M. Reynolds and Don C. Wickman, DataChem Laboratories, Salt Lake City, UT. NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94 7786-34-7 (3,4)G Q5250000 223.17 C7H14N05P (CH30)2P(=O)OC(CH 3)=CHC(=O)NHCH 3919-44-8(2) 6923-22-4 t3'4>TC4375000 291.26 C10H1 NO5PS (C2H50)2P(=S)O(C 6H4)N0256-38-2TF4550000 260.36 C71-11702PS3 (C2H50)2P(=S)SCH 2SC2H98-02-2TD9450000 321.54 CSH8CIX03PS (CH30)2P(=S)O(C 5H2)Cl99-84-3TG0525000 322.43 C12H1902PS3 C2H50P(S{C 3H7})(=S)O(C 6H4)SCH 235400-43-2 288.42 C9H21OPS3 (C2H50)2P(S)SCH 2SC(CH 3)313071-79-9 TD7740000 ORGANOPHOSPHORUS PESTICIDES: METHOD 5600, Issue 1, dated 15 August 1994 - Page 6 of 20 Table 1. Formula and Registry Numbers Compound Empirical Structural (alphabetically) (Daltons) Formula FoO*t t'cs2 Azinphos methyl Chlorpyrifos Diazinon TF3325000 Dicrotophos TC3850000 Disulfoton Ethion Ethoprop Fenamiphos 22224-92-6 Fonofos Malathion 121-75-5 Methamidophos Methyl parathion Mevinphos (E) G05250 100 Mevinphos (E & Z) Monocrotophos (Z) TC4981 100 Monocrotophos (E) Parathion Phorate Ronnel Sulprofos TE4165000 Terbufos C10H12N303PS2 (CH3O)2P(S)SCH 2(C7H4N30)86-50-0TE1 925000 C9H11CI3NO3PS (C2H50)2P(=S)O(C5HN)C132921-88-2TF6300000 C12H2 N2O3PS (C2H50)2P(=S)O(C 4HN2)(CH3)CH(CH 3)2333-41-5 C8H16N05P (CH30)2P(=O)OC(CH 3)=CHC(=O)N(CH 3)2141-66-2 C8H 1902PS3 (C2H50)2P(=S)S(CH 2)2SC2H5298-04-4TD9275000 C9H2204P2S4 [(C2H50)2P(=S)S] 2CH2563-12-2 TE4550000 C81-1 1902P52 (C3H7S)2P(=O)OC 2H51 3194-48-4 TE4025000 C13H22NO3PS (CH3)2CHNHP(=O)(O[C 2H5])O(C6H3)(CH3)SCH3 C10H150PS2 C2H5OP(C2H5)(=S)S(C 6H5)944-22-9TA5950000 C10H1906PS2 (CH30)2P(=S)SCH[C(=O)OC 2H5]CH2C(=O)OC 2H5 C2H8NO2PS CH30P(=O)(NH 2)SCH 310265-92-6 TB4970000 C8H10NO5PS (CH30)2P(=S)O(C 6H4)N02298-00-0TG0175000 C7H1306P (CH30)2P(=O)OC(CH 3)=CHC(=O)OCH p98-01-1 (2) 317.32 350.58 304.34 237.19 274.39 384.46 242.33 303.36 TB3675000 246.32 330.35 WM8400000 141.12 263.20 224.15 NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94 ORGANOPHOSPHORUS PESTICIDES: METHOD 5600 Issue 1, dated 15 August 1994- Page 7 of 20 Molecular weights calculated from the empirical formula using 1979 IUPAC Atomic Weights of the Elements. RTECS = NIOSH Registry of Toxic Effects of Chemical Substances [1]. Merck Index [2]. Farm Chemicals Handbook [3]. 7 \ J 7 z / / / / N' / N N' / / \ / / \ N' 7 / / 7 N' NIOSH Manual of Analytical Metlods (NMAM), Fourth Edition, 8/15/94 7 N ORGANOPHOSPHORUS PESTICIDES: METHOD 5600, Issue 1, dated 15 August 1994- Page 8 of 20 Table 2. Toxicity and Maximum Exposure Limits Compound LD50, mg/Kg1" OSHA NIOSH REL (5 ACGIH TLV STEL (alphabetically) mg/m-' mg/rn3 (ppm) mg/nt'ng/m3 0.2 (skin) 0.2 (skin) 0.1 (skin) 0.25 (skin) o.i" (skin) 0.4 (skin) 0.1 (skin) 0.1 (skin) 10 (skin) 0.2 (skin) 0.1 (skin) 1. Azinphos methyl 11 f 2. Chlorpyrifos 145 0.2 0.2 (0.015) 0.2 // 0.2 (0.014) 3. Diazinon 250 m, 285 f 0.1 0.1 (0.008) 4. Dicrotophos 16 f, 21 m 0.25 0.25 (0.026) 5. Disulfoton 2.3 f, 6.8 m 0.1 0.1 (0.009) 6. Ethion 27 f, 65 m 0.4 0.4 (0.025) 7. Ethoprop 61.5(2) 8. Fenamiphos 10 0.1 0.1 (0.008) 9. Fonofos 3 f, 13 m131 0.1 0.1 (0.010) 10. Malathion 1000 f, 1375 m 10 10 (0.740) 11. Methamidophos 25 m, 27 f 12. Methyl parathion 14 m, 24 f 0.2 0.2 (0.019) 13. Mevinphos 3.7 f, 6.1 m , 0.1 0.1 (0.011) 0.27(6) 14. Monocrotophos 17 m, 20 f 0.25 0.25 (0.027) (skin) 15. Parathion 3.6 f, 13 m 0.1 0.05 (0.004) 16. Phorate 1.1 f, 2.3 m 7 1 0.05 0.05 (0.005) 0.2(56) 17.Ronnel 1250m,2630f y 10 10 (0.760) Sulprofos 227 1 1 (0.076) Terbufos 1.6-4.5 m, 9.0 f Rat-oral; from Merck Index, unless otherwise noted, f = female, m = male [2]. Farm Chemicals Handbook [3]. RTECS [1]. OSHA Final Rule, 1989 (unenforceable, 1992); ony Malathion and Parathion had previous PELs. NIOSH Recommendations for Occupational Safety and Health [5]. ACGIH [18]. NIOSH Manual! of Analytical Methods (NMAM), Fourth Edition, 8/15/94 0.1 (skin) 0.05 (skin) 10 (skin) V) (skin) I ORGANOPHOSPHORUS PESTICIDES: METHOD 5600, Issue 1, dated 15 August 1994- Page 9 of 20 Table 3. Physical Propertied" Compound Liquid Density MP BP Vapor Pressure Solubility in Water (alphabetically) (g/mL) (°C) °C (mm Hg) Pascal rniai.Hg @ Q(mg/L at 20 °C) 1. Azinphos methyl 1.44 73-74 unstable >200 0.00018 1.35x10 6 20> 30(8) ... / 2. Chlorpyrifos none found 41-42 - 0.0025 1.87x10-5 25 - 3. Diazinon 1.116-1.118 liquid decomp. >120 0.019 1.4x10 4 20 40 4. Dicrotophos 1.216 liquid 400 (760) / none found miscible \ 5. Disulfoton 1.144 oil - 0.024 1.8x10 20 S nearly insol. / \' \ 0.0074 5.4x10 5 20>> insol.>3> 6. Ethion 1.220 -12 to -13 - 0.0002 ' 1.5x10 6 slightly sol. /_ N 7. Ethoprop 1.094 oil - 0.047 3.5x10 26 750 / - 8. Fenamiphos none found 49 - 0.00012 9x10 7 20> 329 9. Fonofos 1.16 liquid -- ' none found 10. Malathion / 1.23 - \ \ 2.9 156 (0.7) 0.005 4x10 5 30 (6) 145 - 11. Methamidophos 1.31 54. 0.04 3x10 4 30 readily sol. / S / 0.0023 1.7x10 5 20>> - ' 12. Methyl parathion 1.358 N 37-38 - 0.0002 1.5x10 6 • 20> 50 13. Mevinphos 1.25 20.6. -'> 325 (760) 0.4 3x10 3 20>> miscible • / - / \ /1 0.29 2.2x10 3 20>> 14. Monocrotophos none found 54-55 - . 0.0009 7x10 6 20 • NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94 S S I S S I S S ORGANOPHOSPHORUS PESTICIDES: METHOD 5600, Issue 1, dated 15 August 1994 - Page 10 of 20 • miscible • Parathion 1.26 6 375 (760) 0.005 3.78x10 5 • 20(6) 20 0.00089 6.7x10 6 • Phorate 1.156 liquid 118-120 (2.0) 0.11 8.410 4 2C 50 • Ronnel sp. gr=1.48t21 41 - 0.1 8.x10 4 25 40@25°C / • Sulprofos 1.20 liquid 210 (0.1)(6) <0.0001 <10 6 5 20 nearly insol. (3) • Terbufos 1.105 -29.2 - none found 10-15 (1) From Merck Index, unless otherwise noted [2]. (5) 54-55 °C for pure material, 25-30 °C for commercial mixture. • (2) NIOSH 2nd Edition Method for Ron:lel, S299 [7]. (6) NIOSH 3rd Edition Method 5012 (EPN, Malathion, Parathion) [8]. (3) Farm Chemicals Handbook [3]. (7) OSHA Stopgap Methods (See • specific analyte Method) [4]. (4) NIOSH 3rd Edition Method 2503 for Mevinphos [8]. (8) NIOSH Pocket Guide [6]. • • : • • • • • • • • NIOSH .vlanual of Analytical. Methods (NMAM), Fourth Edition, 8/15/94 • • I • • I • I I I • • ORGANOPHOSPHORUS PESTICIDES: METHOD 5600, Issue 1, dated 15 August 1994- Page 11 of 20 Table 4. Synonyms Compound" Other name CAS Name (alphabetically) Azinphos methyl Guthion* Phosphorodithioic acid, 0,0-dimethyl S-[(4-oxo-1 ,2,3-benzotriazin-3(4H)-yl)methyl] ester (3) Chlorpyrifos Dursban* Phosphorothioic acid, 0,0-diethyl / 0-(3,5,6-trichloro-2-pyridinyl) ester (3) Diazinon Spectracide* Phosphorothioic acid, 0,0-diethyl 0-[6-methyl-2-(l -methylethyl)-4-pyrimidinyl] ester (3) Dicrotophos Bidrin* Phosphoric acid, 3-(dimethylamino)-1-methyl-3-oxo-1-propenyl dimethyl ester (3) 'N cis-3-hydrox'-N , N-dimethylcrotonamide (4) Disulfoton DiSyston* S-[2-(ethylthio)ethyl] ester (3) Ethion 0,0,0,0-tetraethyl ester (3) S,S-methylenediphosphorodithioate (4) Ethoprop Prophos* Fenamiphos Nemacur*,Phenamiphos (1) 3-methyl-4-(methylthio)phenyl ester (3) Phosphoric acid, dimethyl ester, ester with Phosphorodithiolx acid, 0,0-diethyl Phosphorodithioic acid, 5,5-methylene , /O,O,0,0-Tetraethyl / Phosphorodithioic acid, 0-ethyl S,S-dipropyl ester (3) (1-Methylethyl)phosphoramidic acid, ethyl Phosphoramidic acid, isopropyl-, 4-(methylthio)-m-tolyl ethyl ester (4) Fonofos Dyfonate* ester (3) / N ester(4) Malathion Cythiori* diethyl ester (3) 0,0-dimethylphosphorodithioate (4) " Methamidophos Monitor* Methyl parathion Parathion Methyl (1(\ 0-(4-nitrophenyl) ester (3) Mevinphos Phosdrin* Ethyl phosphonodithioic acid, 0-ethyl S-phenyl Phosphonodithioic acid, ethyl-, 0-ethyl 5-phenyl [(Dimethoxyphosphinothioyl)thio]butanedioic acid Succinic acid, mercapto-, diethyl ester, S-ester with Phospioramidothioic acid, 0,S-dimethyl ester (3) / Phospiorothioic acid, 0,0-dimethyl 3-[(Dirnethyoxyphosphinyl)oxy]-2-butenoic acid, NIOSH Manual of Analytbal Methods ('JMAM), Fourth Edition, 8/15/94 N. ORGANOPHOSPHORUS PESTICIDES: METHOD 5600, Issue 1, dated 15 August 1994 - Page 12 of 20 methyl ester (3) phosphate (4) Monocrotophos Azodrin* [1 -methyl-3-(methylamino)-3-oxo- 1 -propenyl] ester (E)-3-hydroxy-N-methylcrotonamide (4) Parathion Ethyl Parathicn (1) ester (3) Phorate Thimet* S-[(ethylthio)methyl] ester (3) 17 Ronnel Fenchlorphos 0-(2,4,5-trichlorophenyl) ester Sulprofos Bolstar* 0-[4-(methylthio)phenyl] 5-propyl ester (4) Terbufos Counter* S-[[(1 ,1-dimethylethyl)thio]methyl] ester (4) Crotonic acid, 3-hydroxy-, methyl ester dimethyl Phosphoric acid, dimethyl Phosphoric acid, dimethyl ester, ester with Phosphorothioic acid, 0,0-diethyl O-(4-nitrophenyl) Phosphorodithioic acid, 0,0-diethyl Phosphorothioic acid, 0,0-dirriethyl Phosphorodithioic acid, 0-ethyl Phosphorodithioic acid, 0,0-diethyl Common name as given in Farm Chenicals Handbook [3]. *=Trade name (Trademark or Registered Name) as given in Farm Chemicals Handbook [3]. Merck Index [2]. RTECS [1] or alternate CAS name in Merck Index [2]. / N N NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94 ORGANOPHOSPHORUS PESTICIDES: METHOD 5600, Issue 1, dated 15 August 1994 - Page 13 of 20 Table 5. Method Evaluatior" A. Compound Range Studied (2) (alphabetically) Mg/M3 mg/sample days 25 °C (0 °C) B. a. Accuracy Bias Precision % Recovery Ave. Azinphos methyl 0.070 Chlorpyrifos 0.068 Diazinon 0.065 Dicrotophos 0.066 Disulfoton 0.066 Ethion 0.068 Ethoprop (3) 0.066 Fenarniphos 0.063 Fonofos 0.066 Malathion 0.067 Metharnidophos (5) 0.069 Methyl parathion 0.063 / Mevinphos 0.067 Monocrotophos 0.071 Parathion 0.071 0.02-0.4 0.0048-0.096 ± 0.178 -0.038 (-0.120 - +0.028) 0.030 97 (105) 0.02-0.4 0.0048-0.096 ± 0.163 -0.027 (-0.054 - +0.017) 0.018 92 (90) / 0.01-0.2 0.0024-0.048 ± 0.162 -0.032 (-0.057- -0.005) 0.020 94 (93) 'N 0.025-0.5 0.006-0.120 ± 0.169 -0.037 (-0.102 - -0.032) 0.025 89 (92) N 0.01-0.2 0.0024-0.048 ± 0.196 -0.064 (-0.081 - -0.032) 0.024 87 (89) . 0.04-0.8 0.0096-0.192 /' ± 0.165 -0.029 (-0.056 - -0.003) 0.018 96 (95) / 0.01-0.2 0.0024-0.048 "\± 0.157 " -0.025 (-0.058 - +0.025) 0.024 97 (93) 0.01-0.2 0.0024-0.048 ' ± 0.155 -0.029 (-0.066 - +0.002) 0.022 94 (96) / \ 0.01-0.2 .0.0024-0.048 '± 0.168 ' -0.036 (-0.076 - +0.008) 0.023 '95 (92) 0.025-0.5 0.006-0.120 ± 0.172 -0.038 (-0.064 - -0.014) 0.019 N 93(93) 0.02-0.4 0.0048-0.096 '± 0.156 -0.018 (-0.046 - +0.011) 0.026 88 (95) 0.02-0.4 0.0048-0.096 ± 0.160 -0.034 (-0.082 - +0.016) 0.018 95(95), 0.01-0.2 0.0024-0.048 ± 0.176 -0.042 (-0.061 - -0.004) 0.028 89 (91) ) 0.025-0.5 0.006-0.120 ± 0.185 -0.043 (-0.047 - -0.020) 0.026 88 (92) 0.005-0.1 0.0012-0.024 ± 0.163 -0.021 (-0.045 - +0.011) 0.019 92 (92) NJIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94 N N • ORGANOPHOSPHORUS PESTCIDES: METHOD 5600, Issue 1, dated 15 August 1994 - Page 14 of • 20 • Phorate 0.005-0.1 0.0012-0.024 ± 0.202 -0.070 (-0.097 - -0.047) • 0.066 0.025 91 (91) . RonneI141 0.025-0.5 0.006-0.120 ± 0.172 -0.040 (-0.076 - +0.021) 0.066 0.018 95 (94) • Sulprofos 41 0.01-0.2 0.0024-0.048 ± 0.181 -0.047 (-0.054 - -0.031) 0.067 0.017 94 (94) • Terbufos131 0.01-0.2 0.0024-0.048 ± 0.188 -0.054 (-0.091 - -0.024) • 0.067 0.022 92 (91) NIOSH Back-up Data Report [9] • The ranges studied were 1/10 to 2x the NIOSH REL (except as noted) sampling at 1 Limin for 4 hours. . No NIOSH REL or OSHA PEL available; used 0.1 mg/rn . Malathion and Ronnel were studied at 1/400 to 1/20 the NIOSH REL, Sulprofos at 1/200 to 1/10 the NIOSH REL. • No NIOSH REL or OSHA PEL availabl&; used 0.2 mg/rn 3. • • . • N / • • / • • /' \ 1 -7 • // • • / • /7 N - NIOSH Man -jai of Analytical Methods (NMAM), Fourth Edition, 8/15/94 • • • 0 ORGANOPHOSPHORUS PESTICIDES: METHOD 5600, Issue 1, dated 15August 1994 - Page 15 of 20 Table 6. Recommended Gas Chromatographic Columns and Condition Parameter Wide Bore Fused Silica Capillary Column Stationary Phase (2) DB-1 DB-5 DB-1701 '' DB-210 Polarity non-polar weakly polar mod. polar mod. polar Length (meters) 30 30 / 30 30 I.D. (millimeters) 0.32 0.32 0.32 0.32 Film thickness (mm) (3) 0.25 1.0 1.0 0.25 Injection (vol., mode) (4)(5) 1 pL, SPL 1 pL, DIR 1 pL, DIR '- \i pL, SPL Oven Temperatures Initial (°C) 100 125 '. 125 100 Final (°C) 275 275 /1 275 250 Max. Recommended (°C) (5) 325 325 N 280 240/260 Program (°C/min.) 3.0 4.0 4.0 3.0 Carrier Gas (Helium) - - Head pressure (p.s.i.) 15 15- N. 15 15 / / Actual conditions may vary depending on column and analytical objectives. The conditions given above are those corresponding to the RT data in Table 7. DB-1, 100% methyl silicone; DB-5, 5% phenyl, 951/:') methyl silicone; DB-1701, 14% cyanopropylphenyl, 86% methyl silicone; DB-210, 50% trifluoropropyl, 50% methyl silicone. Other phase types may also work well. / Thinner films give faster separations at lower temp3ratures promoting analyte stability. Use 2-mm W. injection port lines for 0.5-pL injecticn and 4-mm W. injection port liners for 1-to-2-pL injections with 0.32-mm W. capillary columns. SPL = splitless mode, initial oven temperature 5-10 °C < BP cfdesorption solvent; DIR = direct mode, initial oven temperature 5-10 °C > BP of desorption solvent. In both modes, split-vent off time should be 60 sec for 1-2 pL injections with 4-mm ID injection port liners, and 20-30 sec for 0.5-pL injections with 2-mm ID injection port iiners. Use 2-mm ID injection port liners for 0.5-pL injection and 4-mm ID injection port liners for 1-2 pL injections with 0.32-mm ID capillary columns. ' '> J & W Scientific Catalog, p. 21. [10] N N - NIOSH Manua' of AraIyica Methods (NMAM), Fourth Edition, 8/15/94 ORGANOPHOSPHORUS PESTICIDES: METHOD 5600, Issue 1, dated 15 August 1994- Page 16 of 20 Table 7. Approximate Retention Times of Selected Organophosphorous Compound Compound CaDilIaryColumnt2t (by RT on DB-1) DB-1 DB-1701 DB-210 RT RRT 3 Elution RT, RT, RT, min T, oC(4) min min mm 1. TEPP 3.71 0.128 111 547 718(B) 7.88 2. Triethylphosphorothioate 4.37 0.151 113 6.34 -\ 714(B) 493 3. Methamidophos 5.12 0.177 115 7.64 13.61 12.03 4. Dichlorvos 5.81 0.200 117 8.24 10.67 10.54 5. Mevinphos 10.45 0.360 131 ,12.92 16.69 19.20 6. Ethoprop 17.15 0.592 151 ' 19.09 21.52 20.10 7. Naled 17.61 0.608 153 no data 2317(C) 2146(H) 8. Dicrotophos 18.00 0.621 154 19.94 25.84 31.43 9. Monocrotophos 18.27 0.630 155 20.12 28.11 31.60 10. Sulfotepp 19.06 0.658 157 no data 23.09 21.11 11. Phorate 19.18 0.662 158 20.94 23.l0 18.92 12. Dimethoate 19.44 0.671 158 21.84 no data 13. Demeton-S 20.15 0.695 160 21.70 2506(D) 24.97 14. Dioxathion 21.30 0.735 164 23.04 2633(F) 23.46 15. Fonofos 22.04 0.760 166 23.57 25.87 22.20 16. Terbufos 22.22 0.767 168 23.80 2502(D). 2152(H) 17. Disulfoton 23.09 0.797 169 24.19 2643(F) 22.78 18. Diazinon 23.37 0.806 170 23.75 2500(D) 20.99 19. Methyl parathion 25.37 0.875 176 26.48 31.37 33.21 20. Oxydemeton methyl 0.90 179 no data no data no data 21. Ronnel 26.86 0.927 181 27.39 29.30 26.27 22. Pirimiphos methyl 28.13 / 0.971 184 27.90 29.72 26.77 23. Malathion 28.53 / 0.984 186 28.33 31.78 ° 3308(J) 24. Fenthion 28.74 0.992 186 28.93 31.78 25. Parathion 28.98 1.000 187 29.10 33.28 35.60 26. Chlorpyrifos 29.11 1.004 187 2910(A) 30.79 27.72 27. Crufomate 29.64 1.023 189 29.54 34.00 35.34 28. lsofenphos 31.91 1.101 196 31.17 33.81 33•02(J) 29. Tetrachlorvinphos 33.26 1.148 200 32.60 35.96 37.01 30. Fenamiphos 34.09 1.176 202 33.03 37.14 38.95 31. Merphos 35.19 1.214 206 no data 30.57 23.89 32. Fensulfothion 36.61 " 1.263 210 35.78 42.41 46.98 33. Ethion 37.88 1.307 214 36.30 39.30 37.96 34. Sulprofos 38.49 1.328 216 36.96 39.54 37.11 35. Triphenyl phosphate 40.88 1.411 223 39.06 no data no data 36. EPN 42.64 1' 1.471 228 41.06 47.83 47.13 37. Azinphos methyl 44.16 1.524 232 43.67 no elution 49.24 38. Leptophos 45.12 1.557 235 43.91 47.38 41.68 39. Azinphos ethyl 46.55 1.606 240 46.50 47.43 50.40 40. Coumaphos 49.31 1.702 248 50.10 67.86 60.88 Actual retention times (RT) will vary with individual columns and chromatographic conditions. See Table 9 for chromatographic performance notes. Capilla-y Column conditions given in Table 6. Data from Backup Data Report [9]. Sets of co-eluting or nearly co-eluting peaks are identified by letters: (A), (B), (C), (D), (E), (F), (G), (H), (I), and (J) Retention times relative to Parathion. Elution temperature (°C) for DB-1 column (see Table 6 for column conditions.) Elution temperatures are provided for convenience in selecting approximate GC oven temperatures for isothermal analyses of single or several closely eluting analytes. Broad, tailing peak. NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94 ORGANOPHOSPHORUS PESTICIDES: METHOD 5600, ::ssue 1, dated 15 August 1994- Page 17 of 20 1 S Table 8. Applicable Working Range and Estimated LOD A. B. C. D. E. F. G. Applicable Working Range - Estimated LOD Margin of Compound Atmospherid" Sample(") Instrument' lnstrui211ptIherid Sensitivitv 2 (alphabetically) mg/m, ppm rig/sample ng on column ng on coiglampg/m3 REL/LOD • . / Azinphos methyl 0.02-0.6 0.0015-0.046 2.4 to 72 1.2-36 0.06 0.12 0.0012 167 - Chlorpyrifos 0.02-0.6 0.0014-0,042 2.4 to 72 1.2-36 0.02 0.04 0.0004 500 Diazinon 0.01-0.3 0.0008-0.024 1.2 to 36 / 0.6-18 0.02 0.04 0.0004 250 "N Dicrotophos 0.025-0.75 0.0026-0 077 3.0 to 90 1.5-45 \ 0.1 0.2 0.002 125 Disulfoton 0.01-0.3 0.0009-0 027 1.2 to 36 0.6-18 0.02 0.04 0.0004 250 Ethion 0.04-1.2 0.0025-0076 4.8 to 144 2.4-72 N 0.02 0.04 0.0004 1000 / .. Ethoprop 0.01-0.3 0.0010-0030/ 1.2 to 36 0.6-18 / 0.02 5 0.04 0.0004 (7) / Fenamiphos 0.01-0.3 0.0008-0024 1.2 to 36 " 0.618/ 0.07 0.14 0.0014 71 1 -" Fonofos 0.01-0.3 0.0010-0.030 1.2 to'36 0.6-18 0.02 0.04 0.0004 250 Malathion 1.0-30 0.074-2.2 12. to 36O 6.-180 0.05 0.1 0.001 10,000 Metharnidophos 0.02-0.6.' 0.0035-0.10 2.4 to 72 1.2-36 0.3 0.6 0.005 (7) . S Methyl parathion 0.02-0.6 0.0019-0.056 / 2.4 to 72 1.2-36 0.02 0.04 0.0004 500 Mevinphos '. 0.01-0.3 0.0011-0.033 1.2 to 36 0.6-18 0.06 0.12 0.0012 83 'N Monocrotophos 0.025-0.75 0.0027-O.082 3.0 to 90 1.5-45 0.2 0.4 0.004 ' 63 Parathion 0.005-0.15 " 0.0004-0.013 0.6 to 18 0.3-9 0.02 0.04 0.0004 125 - Phorate 0.005-0.15 0.0005-0.014 0.6 to 18 0.3-9 0.02 0.04 0.0004 125 NIOSH ManuaVof Analytical Methods (NMAM), Fourth Edition, 8/15/94 / S I I S I ORGANOPHOSPHORUS PESTICIDES: METHOD 5600, Issue 1, dated 15 August 1994 - Page 18 of 20 I Ronnel 1.0-30 0.076-2.3 12. to 360 6.-180 0.02 0.04 0.0004 25,000 • Sulprofos 0.1-3.0 0.0076-0.23 12. to 360 6-180 0.03 . 0.06 0.0005 2000 Terbufos 0.01-0.3 0.0008-0.026 1.2 to 36 0.6-18 0.02 • 0.04 0.0004 (7) To cover range of 1/10 to 3x NIOSH REL. • REL in mg/M3 (Table 2) - Atmospheric LOC' (Column G, Table 8). . Calculated for 25 °C and 760 mm Hg (NTP) Calculated for a collection volume of 120 L (2 h @ 1 L/min, 4 h @ 0.5 Llmin, or 10 h © 0.2 Llmin). • Calculated for a collection volume of 12 L (12 min © 1 L/min, 24 min © 0.5 L/min, or 1 h © 0.2 L/min). S Desorbing sample in 2.0 mL solvent and injecting 1 liL into gas chromatograph. No REL I • S O • / N • • • • : • N • <N • S / • NIOSH Manual of Analyucal Methods (NMAM), Fourth Edition, 8/15/94 • S I • • 1,4 1 1 1 5 5 5 2 1,3,4 1,4 3,4 1,2,4 1 5 2 1,5 1,2 2 4 ORGANOPHOSPHORUS PESTICIDES: METHOD 5600, issue 1,dated 15 August 1994 - Page 19 of 20 Table 9. Notes on Analytical Characteristics of Organophosphorous Compound Analytical Characteristics Compound A B C (Alphabetically) Chemical Desorption Gas and Physical and Solution Chromatography 1. Azinphos methyl (Guthion*) 2. Azinphos ethyl (Guthion ethyl) 3. Chlorpyrifos (Dursban*) 4. Coumaphos (Co Ral*) 5. Crufomate (Ruelene*) 1 6. Demeton (Systox*) 2,6 7. Diazinon (Spectracide*) 8. Dichlorvos (DDVP, Vapona*) 7 9. Dicrotophos (Bidrin*) 10. Dimethoate (Cygon*) 1 11. Dioxathion (Delnav*) 12. Disulfoton (DiSyston*) 2 13. EPN (Santox*) 3,5,6 / 5, 5 1 4\ 2, 5\ \ Ethion Ethoprop (Prophos*) /7 Fenamiphos (Nemacur*) /1 Fensulfothion (Dasanit*) 1 Fenthion (Baytex*) Fonofos (Dyfonate*) "N lsofenphos (Oftanol*) 1 / QI L-- ntrnhrc (Phro ,I*\ . Malathion (Cythk n*) 23. Merphos (Folex*) 4 24. Methamidophos (Monitor*) 1 25. Methyl parathion (Parathion methyl) 26. Mevinphos (Phosdrin*) 6,7 27. Monocrotophos (Azodrin*) 1 28. Naled (Dibrom*) 5 29. Oxydemeton methyl (Metasystox-R) "N ' 30. Parathion (Ethyl parathion) "N / 31. Phorate (Thimet*) 'N '2,7 32. Pirimiphos methyl (Actellic*) 33. Ronnel (Fenchlorphos) 34. Sulfotepp (TEDP) ' 35. Sulprofos (Bolstar*) 36. TEPP '. 7 37. Terbufos (Counter*) , , 2 38. Tetrachlorvinphos (Gardona*) 39. Tributyl phosphate 40. Triphenyl phosphate 5 4 2 7 7 * = Trade name, Registered name, or Trademark (Farm Chemicals Handbook [3]). (1) Observations made during selection and validation of selected analytes [9]; refer to notes on the following page. NIOSH ManLal of Analytical Methods (1`41-AAM), Fourth Edition, 8/15/94 ORGANOPHOSPHORUS PESTICIDES: METHOD 5600, Issue 1, dated 15 August 1994 - Page 20 of 20 Table 9 (Continued) - Notes on ANALYTICAL CHARACTERISTICS A. CHEMICAL AND PHYSICAL Amide or phosphoramide, some slightly acidic, very polar chemically. Alkyl thioether, easily oxidized to sulfone and sulfoxide. Sulfoxides, easily oxidized to sulfone. Also very polar chemically. Phosphite, easily air oxidized to phosphate (Merphos - DEF). Vicinal dibromide, easily debrominated (Naled - Dichlorvos). Two or more isomers commonly exist (e.g. Demeton-O and Demeton-S; cis- and trars- mevinphos). Relatively volatile, can be lost if media or vials are left uncapped for even a short period of time. General: Organophosphorous compounds are easily destroyed at mildly alkaline conditions (pH 8). Loses can occur for trace levels of compounds on alkaline glass surfaces. Glassware should be neutralized after washing, if alkaline detergent is used. B. DESORPTION AND SOLUTION Solubility of concentrated solutions in toluene enhanced by the addition of 1% methanol or 10% acetone. Solubility in hexane very unfavorable even for dilute solutions. Changing from 100% toluene to 90/10 toluene/acetone, desorption from glass fiber filters improved from 62% to 98%, desorption from quartz fiber filters improved from 30% to 101%. Changing from glass fiber filters to quartz fiber filters, desorption in toluene improved from 16% to 88% and desorption in 90/10 toluene/acetone improved from 70% to 99%. These compounds are more chemically polar than the other listed organophosphorous compounds; desorption from XAD-2 or from glass or quartz fiber filters in hexane was incomplete or non-existent. Desorption in toluene was adequate except as noted in 2 and 3 above. The use of toluene containing 10% acetone improved recoveries for all analytes to satisfactory levels. The desorption characteristics of these compounds were not evaluated. General: a. The presence of acidic hydrogen or double bonded oxygen anywhere in the molecular structure greatly decreases solubility in non-polar solvents and increases the difficulty of desorption from polar surfaces and sorbents. b. While glass fiber filters and toluene desorbant were adequate for most compounds in preliminary tests, the method was given wider application for the more polar compounds by the use of quartz fiber filters and 90/10 toluene/acetone desorbant. / C. Solvents with lower boiling points (e.g., methylene chloride, chloroform, methyl-t-butyl ether, and ethyl acetate) had good desorption power nearing equivalent to 90/10 toluene acetone, but rendered less satisfactory gas chromatographic responses for the analytes. This effect may be due to better analyte mass-transfer from the injection port to the capillary column with higher boiling solvents using splitless or direct injection techniques. C. GAS CHROMATOGRAPHY Poor chromatography may be encountered with dirty or undeactivated columns or injection ports. Clean quartz wool plugs stuffed in the injection port liner are better than silanized glass wool at reducing losses within the injection port. Multiple, shifted, irregular, or severely tailing peaks may be observed in the chromatogram if degradation or oxidation of the analytes occur prior to injection, within the injection port, or during chromatographic separation on-column. Multiple peaks may be observed due to presence of isomers. Short elution time, compound may co-elute with solvent if oven temperature is too high. Long elution time, compound may be lost if run time is too short, column or injection port is too cool, or split-vent-valve opens too soon when injected in splitless or direct injection mode. Azinphos methyl did not elute from DB-1701 even though Azinphos ethyl did elute. Potential internal standards: Triphenyl phosphate is more favorable if multiple analytes are expected because it is less volatile and elutes in an area of the chromatogram having fewer competing analytes. NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94 ORGANOPHOSPHORUS PESTICIDES: METHOD 5600, Issue 1, dated 15 August 1994- Page 21 of 20 Table 10 Other Methods of Analysis for Organophosphorous Compounds in Air Document Hill & Arnold(') NMAM, 2nd ed. (2) NMAM, 3rd ed. (3) OSHA (4) Method Number v. 1 P&CAM 158 v. 5 P&CAM 295 v. 6 P&CAM 336 v. 3 S208 v. 3 S209 v.3 S210 v. 6 S280 v. 3 S285 v. 3 S295 v. 6 S296 v. 6 S299 v. 3 S370 2503 2504 5012 5514 62 //• Organophosphorous Compound(s) Chlorpyrifos, Demeton-O, Demeton-S, Diazinon, Dimethoate, Malathion, Paraoxon, and Parathion J Parathion Dichlorvos (DDVP) TEPP / N Tributyl phosphate Triorthocresyl phosphate Triphenyl phosphate / N Demeton EPN Parathion Mevinphos Ronnel N Malathion N Mevinphos TEPP EPN, Malathion, and Parathion Demeton N N Chlorpyrifos, Diazinon, Parathion, DDVP, and Malathion OSHA Stopgap (5) Each method is Azinphos ethyl Ethoprop Mevinphos separate and Azinphos methyl Fenamiphos Monocrotophos unnumbered Refer Coumaphos\ Fensulfothion Oxydemeton methyl to by name. Crufomate Fenthion Phorate Demeton Fonofos Pirimiphos methyl \ Dicrotophos lsofenphos Suiprofos N N Dioxathion Leptophos TEDP (sulfotepp) Disulfoton Methamidophos TEPP EPN Methyl dematon Terbufos 'N z Ethion Methyl parathion / \ Hill and Arnold [11] NMAM, 2nd ed. [7] / NMAM, 3rd ed. [8] OSHA Analytical Methods Manual [12] OSHA Stopgap Methods [4] NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94 S • ORGANOPHOSPHORUS PESTIC;DES: METHOD 5600, Issue 1, dated 15 August 1994- Page 22 of 20 Table 11. Preparation of Spiked Media and Liquid Calibration Standards 5 Spiked Concentration Solutions • A. B. C. D. E. F. • Spiking Levels 1/30x 1/10x 113x lx 3x (1) 'REL (Fraction of REL) REL REL REL REL I. Spiking of Media or Liquid \ • Spiking Solution to use: SS-2 SS-2 SS-1 SS-1 SS-1 Dilute this • Preferred Syringe Size: 50 pL 50 pL 50 pL 50 pL 100 pL (2) volume (mL) of Spiking Volume to use: 10 pL 30 l.tL 10 pL 30 pL 90 pL 10 mg/mL stock solution • / to prepare 10 mL ll. Total pg spiked 3 a solution _&i I Azinphos methyl 0.8 2.4 8 24 72 0.8 • Chlorpyrifos 0.8 2.4 8 24 72 0.8 • Diazinon 0.4 1.2 4 \ 12 36 0.4 Dicrotophos 1.0 3 10 30 90 1.0 • Disulfoton 0.4 1.2 4 12 36 0.4 • Ethion 1.6 4.8 / 16 '. 48 144 1.6 Ethoprop 0.4 1.2 4 12 36 0.4 O Fenamiphos 0.4 1.2 4 12 36 0.4 S Fonofos 0.4 1.2 4 12, 36 0.4 Malathion 5 4 12 40 120 \ :360 4.0 • Methamidophos 0.8 2.4 8 24 72 0.8 . Methyl parathion 0.8. 2.4 8 24 72 1.2 4 12 36 0.8 0.4 Mevinphos 0.4 • Monocrotophos 1.0 -, 3 10 30 90 1.0 Parathion /\ 0.2 0.6 2 6 18 0.2 • Phorate , 0.2 0.6 .2 6 18 0.2 • Ronnel 5 4 12 40 120 360 4.0 • Sulprofos ' 4 ' 12 40 120 360 'Terbufos 4 12 36 4.0 0.4 0.4 \ 1.2 • General (for 120L) (4,5) x130 x/10 x/3 x 3x 4y For a collection volume of 120 L Range corresponds to values within column C, Table 8. • For liquid calibration standard preparaticns, add specified volume to 2 mL desorption solution in 2-mL volumetric flask. For laboratory control samples spiked at the REL, apply volume specified in column D to • front section of sampler; in duplicate. For Desorption Efficiency determination, apply specified volume to • front section of sampler; do each of five levels in triplicate. Total ig per sample, for spiked nedia, or per 2 mL desorption solution for liquid calibration standards. O Where x, .tg/sample = REL, ig/. x"120 i/sample; and y, mg/mL = REL, mg/rn 3 x 4 m3/rnL. • For all REL> 1 mg/rn , use 1/1c x REL in the calculations (assumes that collection volume in these cases would be 12 L instead of 120 L). S S NIOSH] 1anual cf Analytical Methods (NMAM), Fourth Edition, 8/15/94 • ORGANOPHOSPHORUS PESTICIDES: METHOD 5600, Issue 1, dated 15 August 1994- Page 23 of 20 NIOSI-i Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94 ORGANOPHOSPHORUS PESTICIDES: METHOD 5600, Issue 1, dated 15 August 1994 - Page 24 of 20 -- 25mm 61 50mm— ________ 13mn 1 \ — PTFE Retainer Ring '— Quartz Fiber Fitter 270mg XAD-2 Front Section Polyurethane Foam Plug 140mg XAD-2 Back Section - Polyurethane Foam Plug Glass SampLing Tube FIGURE 2. OVS-2 SAMPLER NIOSI-f Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94 ORGANOPHOSPHORUS PESTICIDES: METHOD 5630, ssue1, dated 15 August 1994- Page 25 of 20 NIOSH Malual of AnI'4ca M?thojs NMAM), Fourth Edition, 8/15/94 APPENDIX D SITE SPECIFIC HEALTH AND SAFETY PLAN / Geo Soils, Inc. SPECIFIC SITE HEALTH AND SAFETY PLAN FOR PROPERTY MITIGATION PLAN FOR PESTICIDE-IMPACTED SOILS PROPOSED 12-LOT SUBDIVISION, 4.14 ACRES 1835 BUENA VISTA WAY, APN 156-220-01 CARLSBAD, SAN DIEGO COUNTY, CALIFORNIA EMERGENCY NOTIFICATION REFERENCE Emergency Response - Fire/Police/Ambulance ...........................911 Hospital - Tr-City Medical Center .............................. (760) 724-8411 Address: 4002 Vista Way, Oceanside, California / Directions: Take El Camino Real north. Proceed to Vista Way (under the Highway 78 overpass). Proceed east on West Vista Way then to the entrance of Tr-City Medical Center, on the north side of West Vista Way and Highway 78. Location of the hospital site in the Thomas Guide for San Diego County is page 1107, coordinates Bi. / Poison Control Center (619) 543-6000 1-800-876-4766 County of San Diego Department of Health Services Department of Environmental Health Land and Water Quality Division ...........................................(858) 505-6700 Client Mr. Matt Howe, California West communities ...............(760) 918-2823 N, (760) 707-3692 Operations Consultant Mr. John Franklin, GeoSoils, Inc ........................... (760) 438-3155 (760) 250-5835 Standard Procedure for Reporting Emergencies Provide the following information when calling for assistance in an emergency situation: Name, phone number, and location of person making call Number of persons exposed or injured Nature of emergency Actions already taken Remain on the phone unless instructed otherwise. GeoSoils, Inc. INTRODUCTION This Community Health and Safety Plan (CHSP) has been developed specifically for the assessment activities including the excavation of elevated levels of pesticide in soil, to be performed on 1835 Buena Vista Way, in Carlsbad, San Diego County, California. It addresses potential public health concerns and provides guidelines to reduce the potential for exposures and/or injuries to the surrounding public from the activities to be performed at the subject site. This H&S Plan is designed to be specific with regard to the proposed onsite activities and the potential for encounters with hazardous materials and hazardous situations. However, due to potential variations of anticipated conditions at the site, it should be noted that unforeseen situations could arise during the performance of the environmental services that would necessitate a deviation from this CHSP. Thus, provisions will be made to allow modifications to the CHSP when appropriate. SITE LOCATION The subject site consists of a quadrilateral-shaped property located at 1835 Buena Vista Way in Carlsbad, San Diego County, California (see Figure 1, Site Location Map). The site is bounded by McCauley Lane and existing residential development and a church to the southeast, by Buena Vista Avenue and residential development to the northwest, and by Valley Street and existing residential development to the southwest, and a house, and former nursery to the northeast. POTENTIAL ENVIRONMENTAL EFFECTS Potential chemical, physical, and operational hazards identified by OSI and described in this document are not anticipated to cause any unsafe or unhealthy environmental effects. Should conditions be encountered that require protective measures other than those outlined forthis project, onsite activities will be suspended or modified until the appropriate control methods can be implemented. LIMITED PUBLIC NOTIFICATION The limited public notification program will consist of informing affected entities, as identified by representatives of the consultant and the client, of the dates and nature of the proposed activities. Specific Site Health and Safety Plan W.O. E7377-SC Fi1e:e:1wp12\env e7300e7377.pmp GeoSoils, Inc. Page 2 - T 11 L1Z5 uJ • -0 1000 2000 3000 4000 0 Al mi r - Bass Map: TOPO! 2003 National Geographic, U.S.G.S. San Luis Rey Quadrangle. Caifornia -- San Diego Co. 7 5 Minute, dated 1997, current, 1999. SITE 00 C 'C.s1 .— ,. '3 -C ft W C Gc.gb . NOT TO SCALE 3ase Map: G000le Maps, Cop vrig4 t 2015 Google, Map Data Copylght 2015 Google This nap is copyrighted by Gcogle 2015. It is unlawul to copy ,r reproduce an or any part th.reof, whether to persolal ise or resale, without permission. All ight5 reserred. W.O. E7377-SC a SITE LOCATION MAP NJ Figure 1 I OVERVIEW OF POTENTIAL HAZARDS Toxaphene is the contaminant of concern at the site. Potential chemical, physical, and operational hazards identified by the consultant and described in this document are not . anticipated to cause any unsafe or unhealthy environmental effects to the public. The public will be excluded from the area of the soil removal activities. S Symptoms of overexposure to soil affected by toxaphene usually occur after a lengthy exposure. The concentrations required to produce the symptoms of an overexposure . generally depend upon the type of exposure (ingestion, inhalation, or skin contact), the duration of each exposure and/or number of exposures, and the concentration. I S S I S • Other hazards/annoyances that could develop during the field operations include noise . created by the operation of heavy equipment, such as a scraper, dozer, backhoe, or track hoe, and the chance of fire or explosion. The potential for the presence of explosive vapors or a fire from these soil excavation activities is considered minimal. S Fire protection shall be provided by at least a 20-pound ABC-type portable fire extinguisher readily available to trained personnel onsite, and located within 10 feet of spark-producing operations. Personnel shall also be familiar with the procedures for summoning emergency assistance from the fire department. Smoking, open flames, or other ignition sources will not be permitted within 25 feet of the work area. Noise hazards are often created around large equipment (e.g., scrapers, dozers, backhoes and drill rigs) that generate excessive noise. The effects of noise can include: personnel Specific Site Health and Safety Plan W.O. E7377-SC File:e:\wpl2\env\e7300\e7377.pmp GeoSoils, Inc. Page 4 Routes of Exposure Inhalation, ingestion, skin absorption, and skin and/or eye contact. Symptoms Symptoms of overexposure may include but are not limited to eye, nose and respiratory system irritation, giddiness, headache, nausea, staggered gait (walking style), fatigue, anorexia (loss of appetite), lassitude (weakness, exhaustion), dermatitis (inflammation of the skin), bone marrow depression (blood cell production depression), and abdominal pain. Hazard Control There will be no eating, drinking, or smoking during remedial grading of the contaminated soils. During grading operations, personal protection (i.e., clothing) is not required, unless contaminated soils are being handled by individuals. Based upon previous laboratory test results and the chemical nature of subject agricultural residues, contamination onsite appears to be non-volatile; nonetheless, air monitoring is proposed. being startled, annoyed, or distracted; physical damage to the ear, pain, and temporary or permanent hearing loss; communication interference that may cause increased potential hazards due to the inability to warn of danger and proper safety precautions to be taken. Despite the identification of these potential hazards, it is not anticipated that noise levels will exceed existing safety standards. The operational safety hazards that could exist on the site including being hit by equipment, falling objects, falling in holes or ditches, and slippery surfaces. Heavy power equipment shall be operated by experienced and certified (where applicable) operators and shall be located and operated in a safe manner. When heavy equipment is moved on or off the site, a spotter shall assist the driver in watching for and locating above ground obstacles, pedestrian traffic, vehicular traffic, and other hazards. SITE OPERATING PROCEDURES Procedures for the conduct of site visitors during the performance of the soil removal/remedial excavation and associated activities at Rancho Costera have been established to reduce the possibility of injury resulting from exposures to the hazards of concern. These procedures require the cooperation of all onsite personnel and visitors during the project and will be strictly enforced by the Site Manager/Safety Officer. No one shall be allowed to enter the site without the required authorization from either the Project Manager, or the consultant (GSI). Onsite personnel and visitors will also be required to check in with the Site Manager/Safety Officer when entering the site and check out when leaving the site. EMERGENCY RESPONSE/PLANNING Prior to beginning field activities, the Project Manager and the Site Manager/Safety Officer shall plan emergency procedures. Initial planning includes establishing an alarm system (e.g., horn) and the best means for evacuation from work areas in the event of a catastrophic event (e.g., explosion, fire, etc.). Onsite personnel shall also be informed of the location of the telephones and other communication devices located onsite. Specific Site Health and Safety Plan W.O. E7377-SC File:e:\wpl2\env\e7300\e7377.pmp GeoSoils, Inc. Page 5