Toxic Hazards: Phase II Subsurface Investigation (March 22, 2013)

8/10/2019 Toxic Hazards: Phase II Subsurface Investigation (March 22, 2013)

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March 22, 2013

PHASE II SUBSURFACEINVESTIGATION

Property Identification:1185 1245 West Sunset BoulevardLos Angeles, California 90026

AEI Project No. 316456

Prepared for: Mr. Fred Shaffer

Aragon Properties Ltd.1590 Rosecrans Avenue, Suite #D-303Manhattan Beach, California 90266

Prepared by: AEI Consultants5933 West Century Boulevard, Suite 360Los Angeles, California 90045(310) 798-2455


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TABLE OF CONTENTS

1.0 SITE DESCRIPTION ............................................................................................................. 1

2.0 BACKGROUND AND PURPOSE ............................................................................................. 2

3.0 INVESTIGATION EFFORTS .................................................................................................. 3

3.1 Health and Safety Plan ............................................................................................................... 3 3.2 Permitting and Utility Clearance .................................................................................................. 4 3.3 Geophysical Survey .................................................................................................................... 4 3.4 Drilling and Soil Sample Collection ............................................................................................... 4 3.5 Groundwater Sample Collection ................................................................................................... 6 3.6 Boring Destruction ..................................................................................................................... 6 3.7 Laboratory Analyses ................................................................................................................... 6

3.8 Investigation Derived Wastes ...................................................................................................... 6 4.0 FINDINGS ............................................................................................................... ............. 6

4.1 Geology and Hydrogeology ......................................................................................................... 7 4.2 Soil Sample Analytical Results ..................................................................................................... 7

5.0 SUMMARY AND CONCLUSIONS ........................................................................................... 7

6.0 REPORT LIMITATIONS AND RELIANCE ............................................................................... 8

FIGURESFigure 1 Site Location Map

Figure 2 Site Map

TABLESTable 1 Soil Sample Data SummaryTable 1 Groundwater Sample Data Summary

APPENDICES Appendix A Geophysical Survey Report Appendix B Boring Logs Appendix C Laboratory Analyses


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March 22, 2013

Mr. Fred Shaffer Aragon Properties Ltd.1590 Rosecrans Avenue, Suite #D-303Manhattan Beach, California 90266

Subject: Phase II Subsurface Investigation1185 1245 West Sunset BoulevardLos Angeles, California 90026

AEI Project No. 316456

AEI Consultants (AEI) is pleased to provide this report which describes the activities and resultsof the Phase II Subsurface Investigation (Phase II) performed at the above referenced subjectproperty (Figures 1 and 2). This investigation was completed in general accordance with theauthorized scope of services outlined in our authorized proposal number 33288.

1.0 SITE DESCRIPTION

The subject property, which consists of a hardware store with associated storage buildings, aresidence, a car wash, a vacant lot, and a restaurant, is located on the east side of West SunsetBoulevard in a mixed commercial and residential area of Los Angeles, California. The propertytotals 2.66 acres and is improved with 10 single-story, slab-on-grade buildings totaling 30,000square feet. The subject property is currently occupied by a car wash business, Reliable Do ItCenter, film storage company, and residential tenants. On-site operations include car wash andsmall-scale auto repair operations, retail of home improvement goods, film storage, and dailyresidential activities. In addition to the subject property buildings, the property is improved withasphalt-paved parking areas and associated landscaping (Figure 2).

Based on a review of the US Geological Survey (USGS) Hollywood, California QuadrangleTopographic Map, the subject property is at an elevation which ranges from approximately 410feet above mean sea level in the southern portions to approximately 500 feet above mean sealevel in the northeastern portion. The nearest surface water is Echo Lake, located approximately

0.56 mile to the west of the subject property.

Based upon topographic map interpretation and the Underground Storage Tank Low Risk CaseReview Form for G.H. Palmer & Associates at 867 Cesar Chavez Avenue, located approximately0.42 mile southeast of the subject property, obtained from the Regional Water Quality ControlBoards (RWQCBs) GeoTracker website, the direction of groundwater flow beneath the subjectproperty is inferred to be to the southwest. According to a Limited Phase II conducted in March2005 by Petra Geotechnical, Inc., (Petra) for the subject property, soil borings were advanced


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Project No. 316456March 22, 2013Page 2

to 30 feet below ground surface (bgs) and groundwater was not encountered. However,according to the Underground Storage Tank Low Risk Case Review Form for G.H. Palmer &

Associates at 867 Cesar Chavez Avenue, located approximately 0.42 mile southeast of thesubject property, groundwater was encountered at approximately 12 to 20 feet bgs.

2.0 BACKGROUND AND PURPOSE

A Phase I Environmental Site Assessment (Phase I) was performed by AEI as detailed in areport dated February 26, 2013. According to the Phase I, in 1927, the southern portion of thesubject property associated with the addresses 1181 (historical address) and 1185 West SunsetBoulevard, was developed with a gas station. The current structures were developed for gasstation and auto repair purposes in the early 1960s. Gas station operations were conducteduntil at least 1970 and were subsequently phased out.

During AEIs Phase I site reconnaissance, AEI observed patched areas of asphalt on thesouthern portion of 1185 West Sunset Boulevard. The patched areas appear to be the locationsof underground storage tanks (USTs) associated with the historical gas station. According to Mr.

Steve Wintner, subject property owner, four USTs are currently located at the subject property.No information regarding the sizes or dates of installation of the USTs was available.

AEI reviewed a portion of the 2005 Phase I and Limited Phase II for the property located atSunset Boulevard and Everett Street, prepared by Petra. According to these previous reports, asubsurface geophysical survey conducted at the subject property delineated the location of fourUTs and a waste oil UST in the rear of the car wash. Petra conducted soil sampling in thevicinities of the USTs. The results of the soil sample analysis were that trace amounts of totalpetroleum hydrocarbon (TPH) were encountered in one sample collected at 22 feet bgs fromthe vicinity of the waste oil UST. Petra was unable to find evidence that the site had beenimpacted from petroleum hydrocarbons and/or volatile organic compounds (VOCs) related tothe former site use. However, borings could only be collected from the vicinity of the USTs andnot directly below them. Based on the findings of the Phase I, the presence of the USTs andthat subsurface sampling was conducted over 7 years ago at the subject property represents arecognized environmental condition (REC).

AEI observed two clarifiers at 1185 West Sunset Boulevard. One clarifier was located in thegarage and the other clarifier was located in the car washing area. According to records fromthe Los Angeles Bureau of Sanitation Industrial Waste Management District (LABS IWMD),permits to operate a clarifier were issued to the subject property in 1961, 1994, 2009, and 2011for auto wash activities. It is unknown if all of the permits refer to the same clarifier. However,since the permits were issued for auto wash activities, it is presumed that these permits refer tothe clarifier located in the current car washing area. The clarifier located in the garage appears

to have been associated with auto repair operations. Based on the presumed use of this clarifierfor auto repair operations and the on-site historical use of hazardous materials, the clarifierlocated in the garage represents a REC.

Areas of the subject property have historically been used for various industrial purposes sincethe 1920s. T he southern portion of the subject property associated with the addresses 1181(historical address) and 1185 West Sunset Boulevard, was used for car washing and auto repair


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operations from the mid 1960s to the present. These operations are typically associated withthe use of hazardous materials, including solvents and oils.

According to building records, in 1933, the portion of the subject property associated with 1201West Sunset Boulevard was issued a permit for an oil depot. The portion of the subject propertycurrently associated with the addresses 1205 and 1207 West Sunset Boulevard, was historicallyused for industrial purposes. The southern portion of the building was occupied by a plastic keytag manufacturer from 1956 to 1958, and time controls manufacturer from 1962 to 1970. Thenorthern portion of the building was occupied by a chemical manufacturer of disinfectants from1950 to 1954 and a valve manufacturer from 1957 to 1970. Since no information was availableregarding the use of the building from 1927 to 1950, there is a possibility that chemicalmanufacturing was conducted since as early as 1927. These manufacturing operations aretypically associated with hazardous materials including petroleum hydrocarbons and solvents.

The portion of the subject property currently associated with the address 1211 West SunsetBoulevard was developed with a commercial/industrial building from at least 1927. This buildingwas occupied by a shade manufacturer in at least 1942 and a printing facility from at least 1950

to at least 1971. Many printing industries generate waste ink and ink sludges that might containsolvents. Photographic processes are also typically associated with major printing operations forimage conversion and plate making. Photographic wastes, including heavy metal solutions,developers, hardeners, plating chemicals, and spent solvents, make up a large portion of thehazardous waste generated in these industries.

The portion of the subject property currently associated with the address 1229 SunsetBoulevard was historically occupied by a hood & pad manufacturer/sign manufacturer/paintingcompany in 1953 and a sign manufacturer/sign manufacturer/painting company from 1954 to1960. In addition, the portion of the subject property currently associated with the addresses1235, 1237, and 1239 Sunset Boulevard was developed with a commercial/industrial building.The building was occupied by a woodworking and sign painting company in 1950, a signmanufacturer and painting company in 1954, a sash and door warehouse from 1957 to 1960,and sign painting company from 1964 to 1970. It is likely that these former industrial tenantsutilized hazardous materials including oils, lubricants, and solvents. Records pertaining to theuse of hazardous materials for the previous industrial tenants were not available as theyoperated during a time when the regulatory measures governing the use of hazardous materialsof this nature were not as stringent as they are today. Based on the length of time theindustrial operations were conducted, the historical on-site industrial operations represent aREC.

The purpose of this Phase II at the subject property is to assess subsurface soils andgroundwater with regard to the historical and current on-site operations.

3.0 INVESTIGATION EFFORTS

3.1 Health and Safety Plan

A site-specific health and safety plan was prepared, reviewed by onsite personnel, and keptonsite for the duration of the fieldwork.


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3.2 Permitting and Utility Clearance

A soil boring into groundwater service request application was submitted to the Los AngelesCounty Department of Public Health Drinking Water Program for this investigation (pending).The public underground utility locating service Underground Service Alert (USA) was notified toidentify public utilities in the work area. This work was performed under the oversight of aCalifornia-licensed Professional Geologist.

3.3 Geophysical Survey

On February 28, 2013, prior to drilling activities, Subsurface Surveys & Associates, Inc.(Subsurface Surveys) of Carlsbad, California, (Appendix A) under the supervision of AEI,conducted a geophysical survey throughout the property addressed as 1185 West SunsetBoulevard (Figure 2). The purpose of the geophysical survey was to locate and identify anypotential USTs, associated piping, conduits, and other buried features (i.e. septic tank,excavations, and/or drums) that may exist on the subject property.

The equipment used in this investigation consisted of a Geonics electromagnetic (EM)-61 highsensitivity metal detector, a Fischer M-Scope, and ground penetrating radar (GPR). A utilitylocator with line tracing capabilities was also used, where risers exist, onto which a signal couldbe induced and traced.

Items detected were marked on site in industry standard colors including red for electric, bluefor water, green for sewer and drain lines, and white for the edge of the UST tank vault.

Within the area surveyed, the USTs were identified and mapped along the southwesternproperty addressed as 1185 West Sunset Boulevard. No other undocumented USTs, burieddrums or any other anomalous buried objects were detected.

3.4 Drilling and Soil Sample CollectionOn February 28 and March 1, 2013, 17 soil borings (AEI-B1 through AEI-B17) were advancedthroughout the subject property (Figure 2). All borings were advanced by Minuteman Drilling ofSimi Valley, California using a limited-access or truck-mounted direct-push drilling rig. Theborings were advanced to depths of 4.5 to 20 feet bgs. The location and purpose of each boringare listed below:

Boring AEI-B1 was advanced near the northwestern property boundary of 1185 WestSunset Boulevard. For the purpose of soil sampling, boring AEI-B1 was advanced to arefusal depth of approximately 16 feet bgs.

Boring AEI-B2 was advanced northwest of the clarifier located in the car washing area of1185 West Sunset Boulevard. For the purpose of soil sampling, boring AEI-B2 wasadvanced to a refusal depth of approximately 17.5 feet bgs.

Boring AEI-B3 was advanced adjacent to the east of the USTs located at 1185 WestSunset Boulevard. For the purpose of soil sampling, boring AEI-B3 was advanced to amaximum depth of approximately 20 feet bgs.


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Boring AEI-B4 was advanced southwest of the clarifier located in the car washing areaof 1185 West Sunset Boulevard. For the purpose of soil sampling, boring AEI-B4 wasadvanced to a maximum depth of approximately 20 feet bgs.

Boring AEI-B5 was advanced southwest of the USTs located at 1185 West SunsetBoulevard. For the purpose of soil sampling, boring AEI-B5 was advanced to amaximum depth of approximately 20 feet bgs.

Boring AEI-B6 was advanced adjacent to the north of the waste oil storage area locatedat 1185 West Sunset Boulevard. For the purpose of soil sampling, boring AEI-B6 wasadvanced to a refusal depth of approximately 10 feet bgs.

Boring AEI-B7 was advanced south of the clarifier located in the car washing area andsouthwest of the USTs located on 1185 West Sunset Boulevard. For the purpose of soilsampling, boring AEI-B7 was advanced to a maximum depth of approximately 20 feetbgs.

Boring AEI-B8 was advanced adjacent to waste oil UST located at 1185 West SunsetBoulevard. For the purpose of soil sampling, boring AEI-B8 was advanced to a refusaldepth of approximately 14 feet bgs.

Boring AEI-B9 was advanced adjacent to west of the subject property building

addressed as 1201 & 1197 West Sunset Boulevard. For the purpose of soil sampling,boring AEI-B9 was advanced to a terminal depth of approximately 10 feet bgs.

Boring AEI-B10 was advanced in the northern interior of the subject property buildingaddressed as 1233 West Sunset Boulevard. For the purpose of soil sampling, boring

AEI-B10 was advanced to a refusal depth of approximately 4.5 feet bgs. Boring AEI-B11 was advanced in the southern interior of the subject property building

addressed as 1233 West Sunset Boulevard. For the purpose of soil sampling, boring AEI-B11 was advanced to a refusal depth of approximately 8.5 feet bgs.

Boring AEI-B12 was advanced in the northern interior of the subject property buildingaddressed as 1229 West Sunset Boulevard. For the purpose of soil sampling, boring

AEI-B12 was advanced to a terminal depth of approximately 10 feet bgs. Boring AEI-B13 was advanced in the southwestern interior of the subject property

building addressed as 1229 West Sunset Boulevard. For the purpose of soil sampling,boring AEI-B13 was advanced to a refusal depth of approximately 6 feet bgs.

Boring AEI-B14 was advanced in the northwestern interior of the subject propertybuilding addressed as 1211 West Sunset Boulevard. For the purpose of soil sampling,boring AEI-B14 was advanced to a terminal depth of approximately 10 feet bgs.

Boring AEI-B15 was advanced in the southeastern interior of the subject propertybuilding addressed as 1211 West Sunset Boulevard. For the purpose of soil sampling,boring AEI-B15 was advanced to a refusal depth of approximately 6.5 feet bgs.

Boring AEI-B16 was advanced in the southern interior of the subject property buildingaddressed as 1205 West Sunset Boulevard. For the purpose of soil sampling, boring

AEI-B16 was advanced to a terminal depth of approximately 10 feet bgs. Boring AEI-B17 was advanced near the southern property boundary of 1185 West

Sunset Boulevard. For the purpose of groundwater sampling, boring AEI-B17 wasadvanced to a terminal depth of approximately 20 feet bgs. Groundwater equilibrated atapproximately 16 feet bgs.

All borings were advanced using 2-inch outer diameter rods and samples were collected byadvancing the rods with acetate sample liners. At designated sampling intervals, the core was


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retrieved, core barrel disassembled, and the sample liner was removed and transferred to theonsite geologist.

All soil borings were logged using the Unified Soil Classification System. A photo ionizationdetector (PID) was used to screen soil samples in the field and the PID readings for eachsample were included on the boring logs (Appendix B). Boring depths and sampling scheduleare also included on the boring logs.

Down-hole equipment was decontaminated using a triple rinse system containing detergent.

3.5 Groundwater Sample Collection

Groundwater was collected from boring AEI-B17 using the truck-mounted direct push drilling rigby advancing a Hydropunch equipped with a 4-foot screen to approximately 20 feet bgs. TheHydropunch was opened to expose the screened interval and allow groundwater to enter thescreen. Before extracting samples, groundwater was permitted to equilibrate to a static level.Groundwater equilibrated at approximately 16 feet bgs. New -inch diameter polyethylene

tubing was inserted into the Hydropunch

and groundwater was sampled utilizing low flowmethods and transferred into three clean, laboratory-supplied 40-mL VOA containers withhydrochloric acid (HCl) preservative. Neither headspace nor air bubbles were visible in the vialsonce capped.

3.6 Boring Destruction

Following sampling, each boring was backfilled with hydrated granular bentonite and cappedwith concrete at ground surface.

3.7 Laboratory Analyses

All samples were labeled and placed into a cooler with ice following sampling. The sampleswere transferred under appropriate chain-of-custody documentation by AEI to Alpha ScientificCorporation (ASC), a state-certified laboratory (California DHS Certified Laboratory) in the Cityof Cerritos, California. Laboratory analytical documentation is provided in Appendix C.

Laboratory analysis of soil and groundwater consisted of the following: VOCs by EPA Method 8260B Total Petroleum Hydrocarbons (TPH) following carbon-chain methods and reported as

gasoline range (C4-C12), diesel range (C13-22) and oil range (C23-C40) (TPH-g, TPH-dand TPH-o) via USEPA Method 8015M

3.8 Investigation Derived Wastes

No investigation derived waste was created during this investigation.

4.0 FINDINGS

The soil results of this investigation were reviewed and compared to the United StatesEnvironmental Protection Agency (USEPA) Regional Screening Levels (RSLs). The RSLs are risk-based concentrations derived from standardized equations combining exposure information


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assumptions with EPA toxicity data. The RSLs are used for site "screening" and as initialcleanup goals, if applicable. The RSLs are considered by the USEPA to be protective forhumans (including sensitive groups) over a lifetime; however, they are not always applicable toa particular site and do not address non-human health endpoints, such as ecological impacts.

The results of this investigation were also compared to the Environmental Screening Levels(ESLs) from the California Regional Water Quality Control Board. The ESLs are considered to beconservative. Under most circumstances, and within the limitations described, the presence of achemical in soil, soil gas or groundwater at concentrations below the corresponding ESL can beassumed to not pose a significant, threat to human health and the environment. Additionalevaluation will generally be necessary at sites where a chemical is present at concentrationsabove the corresponding ESL.

4.1 Geology and Hydrogeology

The soils encountered at the subject property primarily consisted of interbedded well and poorlygraded sands and gravels, and silty clays and sands from ground surface to a depth of

approximately 20 feet bgs (Appendix B). Groundwater was encountered and equilibrated atapproximately 16 feet bgs in boring AEI-B17.

4.2 Soil Sample Analytical Results

The following information is a summary of the soil sample analytical test results (Appendix C).This information has also been included in Table 1.

VOCs and TPH were not detected in soil samples above the laboratory detection limits.

The following information is a summary of the groundwater sample analytical test results(Appendix C). This information has also been included in Table 2.

VOCs and TPH were not detected in the groundwater sample above the laboratorydetection limits.

5.0 SUMMARY AND CONCLUSIONS

AEI has completed a Phase II at the property to evaluate if the current and historic on-siteoperations had adversely impacted the subject property. A total of 17 borings were advancedthroughout the subject property for the collection of 1-groundwater sample and soil samples.Borings were advanced at select locations of current and previously suspected industrialoperations that could have impacted the subject property.

The results of this investigation were compared to USEPA RSLs and California RWQCB ESLs.

Due to the lack of a release detected, AEI does not recommend any further action for thesubject property at this time.


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6.0 REPORT LIMITATIONS AND RELIANCE

This report presents a summary of work completed by AEI Consultants. The completed workincludes observations and descriptions of site conditions encountered. Where appropriate, itincludes analytical results for samples taken during the course of the work. The number andlocation of samples are chosen to provide the requested information, subject to scope of workfor which AEI was retained and limitations inherent in this type of work, but it cannot beassumed that they are representative of areas not sampled. This report should not be regardedas a guarantee that no further contamination beyond that which could have been detectedwithin the scope of this investigation is present beneath the subject property. Undocumented,unauthorized releases of hazardous material, the remains of which are not readily identifiableby visual inspection and are of different chemical constituents, are difficult and often impossibleto detect within the scope of a chemical specific investigation.

Any conclusions and/or recommendations are based on these analyses and observations, andthe governing regulations. Conclusions beyond those stated and reported herein should not be

inferred from this document. These services were performed in accordance with generallyaccepted practices, in the environmental engineering and construction field, which existed atthe time and location of the work. No other warranty, either expressed or implied, has beenmade.

This investigation was prepared for the sole use and benefit of Mr. Fred Shaffer of AragonProperties, Ltd. All reports, both verbal and written, whether in draft or final, are for the benefitof Aragon Properties, Ltd. This report has no other purpose and may not be relied upon by anyother person or entity without the written consent of AEI. Either verbally or in writing, thirdparties may come into possession of this report or all or part of the information generated as aresult of this work. In the absence of a written agreement with AEI granting such rights, nothird parties shall have rights of recourse or recovery whatsoever under any course of actionagainst AEI, its officers, employees, vendors, successors or assigns. Reliance is provided inaccordance with AEIs Proposal and Standard Terms & Conditions executed by Mr. Shaffer onFebruary 18, 2013. The limitation of liability defined in the Terms and Conditions is the aggregatelimit of AEIs liability to the client and all relying parties.

If there are any questions regarding our investigation, please do not hesitate to contact AEI at310-798-4255.

Sincerely, AEI Consultants

Noel Hernandez Kent Vollmer, PGProject Manager Site Mitigation Dept. Manager


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FIGURES


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FIGURE 2

AEI B1

AEI B2

AEI B3

AEI B4

AEI B5

AEI B6

AEI B7

AEI B8

AEI B9

AEI B1

AEI B12

AEI B11

AEI B13

AEI B14

AEI B15

AEI B16

AEI B17

SITE MAP

Legend

N

Approximate USTs Location

Project Number: 316456

1185 - 1245 West Sunset Boulevard, Los Angeles, California 90026

AEI B1 AEIs Phase II Boring Location - March 2013

Approximate Subject Property Line

WESTSUNSET O

ULEV RD

V

TTST

T

43

33

12 5

1201 /11971 2 1 1 19 7

1 1 85

95 9


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TABLES


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SampleDepth

TPH-g*(C4-C12)

TPH-d(C13-C23)

TPH-o(C24-C40) Benzene Toluene Ethylbenzene

TotalXylenes

All Other VOCs

(feet bgs) (mg/kg) (mg/kg) (mg/kg) ( g/kg) ( g/kg) ( g/kg) ( g/kg) ( g/kg)

AEI-B1 2/28/13 10


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TPH-g*(C4-C12)

TPH-d(C13-C23)

TPH-o(C24-C40) Benzene Toluene Ethylbe

( g/L) ( g/L) ( g/L) ( g/L) ( g/L) (

AEI-B17 2/28/13 AEI-GW17


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APPENDIX A

G EOPHYSICAL S URVEY R EPORT


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2075 Corte Del Nogal, Suite WCarlsbad, CA 92011SS uu bb SS uu r r f f aa cc ee SS uu r r vv ee yy ss

&& A A ss ss oo c c i i aa t t ee ss ,, I I nn c c .. A A nn A A p p p p l l i i ee d d G G ee oo p p hh y y ss i i c c aa l l C C oo mm p p aa nn y y Office: (760) 476-0492

Fax: (760) 476-0493

Subsurface Surveys & Associates, Inc. www.subsurfacesurveys.com [email protected]

March 7, 2013

Project/Invoice No. 13-093 AEI Consultants 5933 West Century Blvd., Suite 360Los Angeles, California 90045

Attn: Noel Hernandez

Re: Geophysical Investigation Report, 1185 West Sunset Blvd, Los Angeles, California.

This report is to present the results of our geophysical survey carried out over an area located at 1185 WestSunset Blvd, Los Angeles, California (Figure 1). The survey was performed on February 28, 2013, and its

purpose was to locate and identify, insofar as possible, pipes, conduits, utilities, and other undergroundobstructions within a 10 foot radius of four (4) proposed borehole.

A combination of electromagnetic induction (EM), magnetometry, and ground penetrating radar (GPR)were applied to the search. Utility locators with line tracing capabilities were also brought to the field andused where risers exist onto which a signal could be impressed and traced.

FIGURE 1. Site location map.


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Survey Design The area to be surveyed was indicated in the field by the client and included four (4) boreholes located on a former gas station which is currently a car wash.

In site situations and survey objectives such as this, the best use of time is achieved by systematically free-traversing with the instruments while monitoring them continuously to determine which responses aresignificant and due to true subsurface targets, and which are due to other non-target or above-groundfeatures and must be ignored (an example being nearby cars). Where applicable, the EM devices, magneticgradiometer, and GPR were traversed systematically over the survey areas in multiple, organized directions.Other traverses were taken for detailing and confirmation where anomalous conditions were found.

In addition, the line tracers were used to impress signals onto pipes, generally through accessible risers andtracer wires when present, to delineate the lines locations and orientations. The instruments were also usedin passive mode, configured to detect 60 Hz electrical signals and other common radio-frequency signalsfound in active electrical and communication lines.

Hard copy of the EM data was not acquired, that is, discrete readings on the nodes of a grid were notrecorded that could be put into a contoured map format. Rather, the instruments meters were readcontinuously, and in real-time, during each traverse. This free-traversing method allowed for immediatedetection of anomalous objects and facilitated the opportunity to investigate them further, without the needto first download and process data in the office. The lack of hard copy for EM data sets does not degradethe quality of the survey in any way. Hard copy merely provides a basis for report documentation of thesegeophysical fields, if such documentation is needed.

A Geonics model EM61, and a Fischer M-Scope, was used for the EM sampling. A Sensors & Software Noggin Ground Penetrating Radar unit with a 500 MHz antenna produced the radar images. The magneticgradiometer was a Schonstedt GA-52, and a Metrotech 9890 and RIDGID SR-60 SeekTech utility locatorrounded out the tools applied.

Brief Description of the Geophysical Methods Applied The EM61 instrument is a high resolution, time-domain device for detecting buried conductive objects. It consists of a powerful transmitter that generates a pulsed primary magnetic field when its coils are energized, which induces eddy currents in nearbyconductive objects. The decay of the eddy currents, following the input pulse, is measured by the coils,which in turn serve as receiver coils. The decay rate is measured for two coils, mounted concentrically, oneabove the other. By making the measurements at a relatively long time interval (measured in milliseconds)after termination of the primary pulse, the response is nearly independent of the electrical conductivity ofthe ground. Thus, the instrument is a super-sensitive metal detector. Due to its unique coil arrangement, theresponse curve is a single well-defined positive peak directly over a buried conductive object. Thisfacilitates quick and accurate location of targets.

The M-Scope device energizes the ground by producing an alternating primary magnetic field with ACcurrent in a transmitting coil. If conducting materials are within the area of influence of the primary field,AC eddy currents are induced to flow in the conductors. A receiving coil senses the secondary magneticfield produced by these eddy currents, and outputs the response as anomalous conditions. The strength ofthe secondary field is a function of the conductivity of the object; say a pipe, tank or cluster of drums, itssize, and its depth and position relative to the instrument's two coils. Conductive objects, to a depth ofapproximately 7 feet below ground surface (bgs) for the M-Scope are sensed. The device is also somewhatfocused; that is, it is more sensitive to conductors below the instrument than they are to conductors off to the


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side.

The magnetic gradiometer has two flux gate magnetic fixed sensors that are passed closely to and over theground. When not in close proximity to a magnetic object, that is, only in the earth's field, the instrumentemits a sound signal at a low frequency. When the instrument passes over a buried iron or steel object, sothat locally there is a high magnetic gradient, the frequency of the emitted sound increases. The frequencyis a function of the gradient between the two sensors.

The line locator is used to passively detect energized high voltage electric lines and electrical conduit (50-60 Hz), VLF signals (14-22 kHz), as well as to actively trace other utilities. Where risers are present, theutility locator transmitter can be connected directly to the object, and a signal (9.8-82 kHz) is sent travelingalong the conductor, pipe, conduit, etc. In the absence of a riser, the transmitter can be used to impress aninput signal on the utility by induction. In either case, the receiver unit is tuned to the input signal, and isused to actively trace the signal along the pipes surface projection.

The GPR instrument beams energy into the ground from its transducer/antenna, in the form ofelectromagnetic waves. A portion of this energy is reflected back to the antenna at a boundary in thesubsurface across which there is an electrical contrast. The instrument produces a continuous record of thereflected energy as the antenna is traversed across the ground surface. The greater the electrical contrast,the higher the amplitude of the returned energy. The radar wave travels at a velocity unique to the material

properties of the ground being investigated, and when these velocities are known, the two-way travel timescan be converted to depth. The depth of penetration and image resolution produced are a function of groundelectrical conductivity and dielectric constant.

Interpretation and Conclusions - The interpretation took place in real time as the survey progressed, andaccordingly, the findings of our investigation were marked on the ground cover at the site using spray paint,reported to the client, and are further documented with site photographs of the areas investigated (Figures2-5).

Items detected in the vicinity of the compound were marked in industry standard colors including green forsewer, red for electric, white for the edge of the tank pits and blue for water

As shown in Figure 3, white was used to mark the edge of the pea-gravel in which onsite USTs reside in. Note that the proposed borehole was placed outside this region. Please refer to the site photographs for thelocations of the boreholes and the orientation of all items found in their vicinity.

At the conclusion of the survey, the proposed boreholes were placed, so as to avoid all detectedobstructions. The boreholes were marked in white with a yellow SSS to indicate that they had beenchecked by company personnel.

Limitations and Further Recommendations - It should be understood that limitations inherent ingeophysical instruments and/or surveying techniques exist at all sites, and nearly all sites exhibit conditionsunder which such might not perform optimally. Consequently, the detection of buried objects in allcircumstances cannot be guaranteed . Such limitations are numerous and include, but are not limited to,rebar-reinforced ground cover, abrupt changes in ground cover type, above-ground obstacles preventing fulltraverses or traverses in one direction only, above-ground conductive objects interfering with instrumentsignal, nearby powerlines or EM transmitters, highly conductive background soil conditions, limited GPR


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4

penetration, non-metallic targets, shallower or larger objects shielding deeper or smaller targets, tracingsignal jumping from one line to another, and inaccessible risers, cleanouts, valve boxes, and manholes. Ifone or more geophysical instrument is rendered ineffective and cannot be utilized, the quality of the surveycan be somewhat degraded.

For the above reasons, and in the interest of maximum safety, we encourage our clients to take advantage ofUnderground Service Alert (USA), Dig Alert, or other similar services, when possible. Furthermore, werecommend hand-auguring and the use of a drilling method known as air knifing or vacuum extraction,when feasible or if applicable to this project. These methods may significantly limit damage to underground

pipes, conduits, and utilities that might not have been detectable during the course of this survey. Please bear in mind, that geophysical surveying is only one of several levels of protection that is available to ourclients.

SubSurface Surveys may include maps in some reports. While they are an accurate general representationof the site and our findings, they are not of engineering quality (i.e., measured and mapped by a licensedland surveyor).

SubSurface Surveys and Associates makes no guarantee either expressed or implied regarding the accuracyof the findings and interpretations present. And, in no event will SubSurface Surveys and Associates beliable for any direct, indirect, special, incidental, or consequential damages resulting from interpretationsand opinions presented herewith.

All data generated on this project are in confidential file in this office, and are available for review byauthorized persons at any time. The opportunity to participate in this investigation is very muchappreciated. Please call, if there are questions.

Todd Barker Travis CrosbyStaff Geophysicist, SubSurface Surveys California State Geophysics Registration GP1044

Senior Geophysicist, SubSurface Surveys


22/68

TITLE:

SSS PROJECT NO:1185 W. Sunset BlvdLos Angeles, California

13-093

February 28, 2013SITE: SURVEY DATE:

PREPARED FOR:

AEI Consultants

Utility Clearance for Boreholes

Figure 7 Figure 6

Figure 5 Figure 4

Figure 3Figure 2

BH

BH

BH

BH


23/68

APPENDIX B

B ORING L OGS


24/68

LOG OF BOREHOLE:

PROJECT NUMBER:

PROJECT ADDRESS:

DRILLING CONTRACTOR:

DRILLING METHOD:

CLIENT:

START DATE:

TOTAL DEPTH:

DEPTH TO FIRSTGROUNDWATER:

LOGGEDBY:

SHEET 1 OF 17

DEPTH TO STATICGROUNDWATER:

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

D E P T H

( f e e t

b g s )

S A M P L E

N U M B E R

SAMPLE DATA

P I D

( p p m )

U S C S

L I T H O L O G Y

SOIL DESCRIPTION REMARKS

END DATE:

CHECKEDBY: NOTES:

AEI CONSULTANTS5933 West Century Boulevard, Suite 360

Los Angeles, California 90045

ELEVATION:

AEI-B1

Backfilled with hydrated granular bentonite and concrete capped.B. CampbellN. Hernandez

Truck mounted direct-push drill rig Approx. 16 feet bgs

Minuteman Drilling 2/28/13 2/28/13

Aragon Properties, Ltd.316456 / Phase II Subsurface Investigation

1185 - 1245 W. Sunset Blvd., Los Angeles, CA 90026 Ranges from 410 to 500 feet amsl

Not encounteredNot encountered

AEI-B1-10 0.0 SM

AEI-B1-15 0.0 SM

Approximately 1 of asphalt at ground surface

As above, very stiff to hard

Boring advanced to a refusal depth of approx. 16 feet belowground surface (bgs). Soil samples collected at 5, 10, and 15feet bgs. Borehole backfilled to ground surface with hydratedgranular bentonite and concrete capped after soil sampling.

AEI-B1-5 0.0 ML Clayey SILT, trace gravel, light brown, moist, firm to stiff,homogeneous

Silty SAND, trace clay, light brown, moist, stiff to very stiff,homogeneous


25/68

LOG OF BOREHOLE:

PROJECT NUMBER:

PROJECT ADDRESS:


DRILLING METHOD:

CLIENT:

START DATE:

TOTAL DEPTH:

SHEET 2 OF 17

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

D E P T H

( f e e t

b g s )

S A M P L E

N U M B E R

SAMPLE DATA

P I D

( p p m )

U S C S

L I T H O L O G Y


END DATE:


LOGGEDBY:


CHECKEDBY: NOTES:



ELEVATION:

AEI-B2


Truck mounted direct-push drill rig Approx. 17.5 feet bgs





Approximately 2 of concrete at ground surface

AEI-B2-10 0.0 ML

AEI-B2-15 0.0 ML

AEI-B2-5 0.0 ML SILT, with clay, trace gravel, brown, moist, firm to stiff,homogeneous

As above, some clay, olive-gray

Boring advanced to a refusal depth of approx. 17.5 feet belowground surface (bgs). Soil samples collected at 5, 10, and 15

feet bgs. Borehole backfilled to ground surface with hydratedgranular bentonite and concrete capped after soil sampling.

As above, some clay, olive-gray


26/68

LOG OF BOREHOLE:

PROJECT NUMBER:

PROJECT ADDRESS:


DRILLING METHOD:

CLIENT:

START DATE:

TOTAL DEPTH:

SHEET 3 OF 17

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

D E P T H

( f e e t

b g s )

S A M P L E

N U M B E R

SAMPLE DATA

P I D

( p p m )

U S C S

L I T H O L O G Y


END DATE:


LOGGEDBY:


CHECKEDBY: NOTES:



ELEVATION:

AEI-B3








AEI-B3-10 0.0

ML AEI-B3-15 0.0

AEI-B3-20 0.0 As above, hard

Boring advanced to a terminal depth of approx. 20 feet belowground surface (bgs). Soil samples collected at 10, 15, and 20feet bgs. Borehole backfilled to ground surface with hydratedgranular bentonite and concrete capped after soil sampling.

SP Poorly Graded SAND, trace gravel, olive-gray, moist, loose tomedium dense, homogeneous

SILT, with clay, trace gravel, red-brown, moist, very stiff to hard,homogeneous

ML


27/68

LOG OF BOREHOLE:

PROJECT NUMBER:

PROJECT ADDRESS:


DRILLING METHOD:

CLIENT:

START DATE:

TOTAL DEPTH:

SHEET 4 OF 17

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

D E P T H

( f e e t

b g s )

S A M P L E

N U M B E R

SAMPLE DATA

P I D

( p p m )

U S C S

L I T H O L O G Y


END DATE:


LOGGEDBY:


CHECKEDBY: NOTES:



ELEVATION:

AEI-B4








AEI-B4-10 0.0 SP

AEI-B4-15 0.0 SP

AEI-B4-20 0.0 ML

Boring advanced to a terminal depth of approx. 20 feet belowground surface (bgs). Soil samples collected at 5, 10, 15, and 20feet bgs. Borehole backfilled to ground surface with hydratedgranular bentonite and concrete capped after soil sampling.

AEI-B4-5 0.0 CL

SILT, with clay, trace gravel, olive, moist, very dense,homogeneous

Lean CLAY, trace gravel, olive-gray, moist, firm, homogeneous

Poorly Graded SAND, some clay, red-brown, moist, mediumdense to dense, homogeneous

As above


28/68

LOG OF BOREHOLE:

PROJECT NUMBER:

PROJECT ADDRESS:


DRILLING METHOD:

CLIENT:

START DATE:

TOTAL DEPTH:


LOGGEDBY:

SHEET 5 OF 17


1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

D E P T H

( f e e t

b g s )

S A M P L E

N U M B E R

SAMPLE DATA

P I D

( p p m )

U S C S

L I T H O L O G Y


END DATE:

CHECKEDBY: NOTES:



ELEVATION:

AEI-B5







AEI-B5-5 0.0 ML

AEI-B5-10 0.0


ML As above

SILT, with clay, trace gravel, brown, moist, firm to stiff,homogeneous

AEI-B5-20 0.0 ML

Boring advanced to a terminal depth of approx. 20 feet belowground surface (bgs). Soil samples collected at 5, 10, 15, and 20feet bgs. Borehole backfilled to ground surface with hydratedgranular bentonite and concrete capped after soil sampling.

SILT, with clay, trace gravel, red, moist, very dense,homogeneous

SP AEI-B5-15 0.0 Poorly Graded SAND, trace gravel, light brown, moist, medium

dense, homogeneous


29/68

LOG OF BOREHOLE:

PROJECT NUMBER:

PROJECT ADDRESS:


DRILLING METHOD:

CLIENT:

START DATE:

TOTAL DEPTH:


LOGGEDBY:

SHEET 6 OF 17


1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

D E P T H

( f e e t

b g s )

S A M P L E

N U M B E R

SAMPLE DATA

P I D

( p p m )

U S C S

L I T H O L O G Y


END DATE:

CHECKEDBY: NOTES:



ELEVATION:

AEI-B6







AEI-B6-5 0.0 ML

AEI-B6-10 0.0


ML As above

Boring advanced to a terminal depth of approx. 10 feet belowground surface (bgs). Soil samples collected at 5 and 10 feetbgs. Borehole backfilled to ground surface with hydratedgranular bentonite and concrete capped after soil sampling.

SILT, with clay, trace gravel, red-brown, moist, stiff to very stiff,homogeneous


30/68

LOG OF BOREHOLE:

PROJECT NUMBER:

PROJECT ADDRESS:


DRILLING METHOD:

CLIENT:

START DATE:

TOTAL DEPTH:

SHEET 7 OF 17

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

D E P T H

( f e e t

b g s )

S A M P L E

N U M B E R

SAMPLE DATA

P I D

( p p m )

U S C S

L I T H O L O G Y


END DATE:


LOGGEDBY:


CHECKEDBY: NOTES:



ELEVATION:

AEI-B7



Minuteman Drilling




3/1/13 3/1/13


AEI-B7-10 0.0

ML AEI-B7-15 0.0

AEI-B7-20 0.0 As above, interlayered gray, red-brown, and yellow-brown

Boring advanced to a terminal depth of approx. 20 feet belowground surface (bgs). Soil samples collected at 10, 15, and 20feet bgs. Borehole backfilled to ground surface with hydratedgranular bentonite and concrete capped after soil sampling.

ML SILT, with fine sand, trace gravel, olive with yellow-brown, moist,very stiff, homogeneous

SILT, with fine sand, gray to gray-brown, moist, very stiff to hard,homogeneous

ML


31/68

LOG OF BOREHOLE:

PROJECT NUMBER:

PROJECT ADDRESS:


DRILLING METHOD:

CLIENT:

START DATE:

TOTAL DEPTH:


LOGGEDBY:

SHEET 8 OF 17


1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

D E P T H

( f e e t

b g s )

S A M P L E

N U M B E R

SAMPLE DATA

P I D

( p p m )

U S C S

L I T H O L O G Y


END DATE:

CHECKEDBY: NOTES:



ELEVATION:

AEI-B8







AEI-B8-10 0.0 SM

AEI-B8-14 0.0 ML


Fine Sandy SILT, red-brown, Fe-oxide staining, moist, hard,homogeneousBoring advanced to a refusal depth of approx. 14 feet belowground surface (bgs). Soil samples collected at 5, 10, and 14feet bgs. Borehole backfilled to ground surface with hydratedgranular bentonite and concrete capped after soil sampling.

AEI-B8-5 0.0 ML SILT, with fine sand, trace gravel, gray with red-brown, moist,stiff to very stiff, homogeneous

Silty Fine SAND, with silt, olive-gray, Fe-oxide staining, moist,stiff to very stiff, homogeneous


32/68

LOG OF BOREHOLE:

PROJECT NUMBER:

PROJECT ADDRESS:


DRILLING METHOD:

CLIENT:

START DATE:

TOTAL DEPTH:


LOGGEDBY:

SHEET 9 OF 17


1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

D E P T H

( f e e t

b g s )

S A M P L E

N U M B E R

SAMPLE DATA

P I D

( p p m )

U S C S

L I T H O L O G Y


END DATE:

CHECKEDBY: NOTES:



ELEVATION:

AEI-B9



Minuteman Drilling




3/1/13 3/1/13

AEI-B9-5 0.0 CL

AEI-B9-10 0.0


As above, with fine sand, dark yellow and red-brown


Lean CLAY, trace fine sand, red-brown, moist, stiff to very stiff,homogeneous

CL


33/68

LOG OF BOREHOLE:

PROJECT NUMBER:

PROJECT ADDRESS:


DRILLING METHOD:

CLIENT:

START DATE:

TOTAL DEPTH:

SHEET 10 OF 17

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

D E P T H

( f e e t

b g s )

S A M P L E

N U M B E R

SAMPLE DATA

P I D

( p p m )

U S C S

L I T H O L O G Y


END DATE:


LOGGEDBY:


CHECKEDBY: NOTES:



ELEVATION:

AEI-B1


Limited-access direct-push drill rig Approx. 4.5 feet bgs

Minuteman Drilling




3/1/13 3/1/13


AEI-B10-4.5 0.0 SM

AEI-B10-2 0.0 SM Silty Fine SAND, trace gravel, olive-gray, moist, dense to very

dense, homogeneous

As above, very stiff to hardBoring advanced to a refusal depth of approx. 4.5 feet belowground surface (bgs). Soil samples collected at 2 and 4.5 feetbgs. Borehole backfilled to ground surface with hydratedgranular bentonite and concrete capped after soil sampling.


34/68

LOG OF BOREHOLE:

PROJECT NUMBER:

PROJECT ADDRESS:


DRILLING METHOD:

CLIENT:

START DATE:

TOTAL DEPTH:

SHEET 11 OF 17

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

D E P T H

( f e e t

b g s )

S A M P L E

N U M B E R

SAMPLE DATA

P I D

( p p m )

U S C S

L I T H O L O G Y


END DATE:


LOGGEDBY:


CHECKEDBY: NOTES:



ELEVATION:

AEI-B11


Truck mounted direct-push drill rig Approx. 8.5 feet bgs

Minuteman Drilling




3/1/13 3/1/13


AEI-B11-8.5 0.0 MLBoring advanced to a refusal depth of approx. 8.5 feet belowground surface (bgs). Soil samples collected at 5 and 8.5 feetbgs. Borehole backfilled to ground surface with hydratedgranular bentonite and concrete capped after soil sampling.

AEI-B11-5 0.0 ML

Sandy SILT, gray-brown, moist, very stiff to hard, homogeneous

Fine Sandy SILT, gray to red-brown, moist, very stiff to hard,homogeneous


35/68

LOG OF BOREHOLE:

PROJECT NUMBER:

PROJECT ADDRESS:


DRILLING METHOD:

CLIENT:

START DATE:

TOTAL DEPTH:


LOGGEDBY:

SHEET 12 OF 17


1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

D E P T H

( f e e t

b g s )

S A M P L E

N U M B E R

SAMPLE DATA

P I D

( p p m )

U S C S

L I T H O L O G Y


END DATE:

CHECKEDBY: NOTES:



ELEVATION:

AEI-B1



Minuteman Drilling




3/1/13 3/1/13

AEI-B12-5 0.0 ML

AEI-B12-10 0.0


SM

SILT, with clay, trace gravel, red-brown, moist, stiff to very stiff,homogeneous

Silty SAND, trace gravel, red-brown, moist, very dense,homogeneous

Boring advanced to a refusal depth of approx. 10 feet belowground surface (bgs). Soil samples collected at 5 and 10 feetbgs. Borehole backfilled to ground surface with hydratedgranular bentonite and concrete capped after soil sampling.


36/68

LOG OF BOREHOLE:

PROJECT NUMBER:

PROJECT ADDRESS:


DRILLING METHOD:

CLIENT:

START DATE:

TOTAL DEPTH:

SHEET 13 OF 17

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

D E P T H

( f e e t

b g s )

S A M P L E

N U M B E R

SAMPLE DATA

P I D

( p p m )

U S C S

L I T H O L O G Y


END DATE:


LOGGEDBY:


CHECKEDBY: NOTES:



ELEVATION:

AEI-B1


Limited-access direct-push drill rig Approx. 6 feet bgs

Minuteman Drilling




3/1/13 3/1/13


AEI-B13-4 0.0 SM

AEI-B13-2 0.0 SM Silty Fine SAND, trace gravel, yellow-brown, moist, dense to

very dense, homogeneous

Boring advanced to a refusal depth of approx. 6 feet belowground surface (bgs). Soil samples collected at 2, 4, and 6 feetbgs. Borehole backfilled to ground surface with hydratedgranular bentonite and concrete capped after soil sampling.

Silty SAND, trace gravel, gray, Fe-oxide staining, moist, denseto very dense, homogeneous

AEI-B13-6 0.0 SMSilty Fine SAND, trace gravel, yellow with gray, moist, verydense, homogeneous


37/68

LOG OF BOREHOLE:

PROJECT NUMBER:

PROJECT ADDRESS:


DRILLING METHOD:

CLIENT:

START DATE:

TOTAL DEPTH:


LOGGEDBY:

SHEET 14 OF 17


1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

D E P T H

( f e e t

b g s )

S A M P L E

N U M B E R

SAMPLE DATA

P I D

( p p m )

U S C S

L I T H O L O G Y


END DATE:

CHECKEDBY: NOTES:



ELEVATION:

AEI-B14



Minuteman Drilling




3/1/13 3/1/13

AEI-B14-5 0.0 SP

AEI-B14-10 0.0



Fine to medium Poorly Graded SAND, with clay, red-brown,Fe-oxide staining, moist, dense to very dense, homogeneous

SCClayey Fine SAND, red-brown, Fe-oxide staining, moist, denseto very dense, homogeneous


38/68

LOG OF BOREHOLE:

PROJECT NUMBER:

PROJECT ADDRESS:


DRILLING METHOD:

CLIENT:

START DATE:

TOTAL DEPTH:


LOGGEDBY:

SHEET 15 OF 17


1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

D E P T H

( f e e t

b g s )

S A M P L E

N U M B E R

SAMPLE DATA

P I D

( p p m )

U S C S

L I T H O L O G Y


END DATE:

CHECKEDBY: NOTES:



ELEVATION:

AEI-B1


Limited-access direct-push drill rig Approx. 6.5 feet bgs






AEI-B15-5 0.0 SM Silty SAND, with clay, trace gravel, red-brown, moist, very

dense, homogeneous

Boring advanced to a refusal depth of approx. 6.5 feet belowground surface (bgs). Soil sample collected at 5 feet bgs.Borehole backfilled to ground surface with hydrated granular bentonite and concrete capped after soil sampling.


39/68

LOG OF BOREHOLE:

PROJECT NUMBER:

PROJECT ADDRESS:


DRILLING METHOD:

CLIENT:

START DATE:

TOTAL DEPTH:

SHEET 16 OF 17

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

D E P T H

( f e e t

b g s )

S A M P L E

N U M B E R

SAMPLE DATA

P I D

( p p m )

U S C S

L I T H O L O G Y


END DATE:


LOGGEDBY:


CHECKEDBY: NOTES:



ELEVATION:

AEI-B1


Limited-access direct-push drill rig Approx. 10 feet bgs

Minuteman Drilling




3/1/13 3/1/13


AEI-B16-10 0.0 CL

Boring advanced to a refusal depth of approx. 10 feet belowground surface (bgs). Soil samples collected at 5 and 10 feetbgs. Borehole backfilled to ground surface with hydratedgranular bentonite and concrete capped after soil sampling.

AEI-B16-5 0.0 SC Clayey SAND, dark-brown, moist, dense to very dense,homogeneous

Sandy CLAY, red-brown, moist, stiff to very stiff, homogeneous


40/68

LOG OF BOREHOLE:

PROJECT NUMBER:

PROJECT ADDRESS:


DRILLING METHOD:

CLIENT:

START DATE:

TOTAL DEPTH:


LOGGEDBY:

SHEET 17 OF 17


1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

D E P T H

( f e e t

b g s )

S A M P L E

N U M B E R

SAMPLE DATA

P I D

( p p m )

U S C S

L I T H O L O G Y


END DATE:

CHECKEDBY: NOTES:



ELEVATION:

AEI-B1



Minuteman Drilling



Approx. 16 feet bgs Approx. 18 feet bgs

3/1/13 3/1/13


3/1/13

Boring advanced to a terminal depth of approx. 20 feet belowground surface (bgs) for groundwater sampling. oil samplescollected.

Borehole backfilled to ground surface with hydrated granular bentonite and concrete capped after sampling.

No sFor the purpose of groundwater sampling, boring AEI-

B17 was advanced to a terminal depth of approximately 20 feetbgs. Groundwater equilibrated at approximately 16 feet bgs.


41/68

APPENDIX C

L ABORATORY A NALYSES


42/68

Alpha Scientific CorporationEnvironmental Laboratories

16760 Gridley Road, Cerritos, CA 90703, Phone (562) 809-8880 Fax (562) 809-88011

03-08-2013

Mr. Noel HernandezAEI Consultants5933 W. Century Blvd, Suite 360Los Angeles, CA 90045

Project: Sunset/316456Project Site: 1185-1245 W. Sunset Blvd., Los Angeles, CASample Date: 02-28/03-01-2013Lab Job No.: AI303008

Dear Mr. Hernandez:

Enclosed please find the analytical report for the sample(s) received by Alpha Scientific Corporation on03-04-2013 and analyzed by the following EPA methods:

EPA 8015M (Total Petroleum Hydrocarbons)EPA 8260B (VOCs & Oxygenates by GC/MS)

All analyses have met the QA/QC criteria of this laboratory.

The sample(s) arrived in good conditions (i.e., chilled, intact) and with a chain of custody record attached.

Alpha Scientific Corporation is a CA DHS certified laboratory (Certificate Number 2633). Thank you for givingus the opportunity to serve you. Please feel free to call me at (562) 809-8880 if our laboratory can be of further service to you.

Sincerely,

Roger Wang, Ph. D.Laboratory Director

Enclosures

This cover letter is an integral part of this analytical report.


43/68



Client: AEI Consultants Lab Job No.: AI303008Project: Sunset/316456Project Site: 1185-1245 W. Sunset Blvd., Los Angeles, CA Date Sampled: 02-28-2013&

03-01-2013Matrix: Soil Date Received: 03-04-2013Batch No. for TPH-g: BMC05-GS1 Date Analyzed: 03-05-2013Batch No. for TPH-d: BC06-DS1 Date Analyzed: 03-06-2013

Date Reported: 03-08-2013

EPA 8015M (Total Petroleum Hydrocarbons)Reporting Unit: mg/kg (ppm)

Sample ID Lab IDGasoline Range

(C4-C12)*Diesel Range

(C13-C23)Oil Range(C24-C40)

MDL 0.2 1 25PQL 0.5 5 50

Method Blank ND ND ND

AEI-B1-10 AI303008-1 ND ND ND














* Gasoline Range TPH result is obtained from purge and trap analysis using LUFT GC/MS MethodMDL: Method Detection Limit.PQL: Practical Quantitation Limit.

ND: Not Detected (at the specified limit).J: Trace value. Result is lower than PQL but higher than MDL.


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Client: AEI Consultants Lab Job No.: AI303008Project: Sunset/316456Project Site: 1185-1245 W. Sunset Blvd., Los Angeles, CA Date Sampled: 03-01-2013Matrix: Water Date Received: 03-04-2013Batch No. for TPH-g: EMC05-GW1 Date Analyzed: 03-05-2013Batch No for TPH-d: BC06-DW1 Date Analyzed: 03-06-2013

Date Reported: 03-08-2013

EPA 8015M (Total Petroleum Hydrocarbons)Reporting Units: g/L (ppb)

Sample ID Lab IDGasoline Range

(C4-C12)*Diesel Range

(C13-C23)Oil Range(C24-C40)

MDL 50 500 2500

PQL 100 750 4000

Method Blank ND ND ND

AEI-GW17 AI303008-31 ND ND ND

* Gasoline Range TPH result is obtained from purge and trap analysis using LUFT GC/MS MethodMDL: Method Detection Limit.PQL: Practical Quantitation Limit.

ND: Not Detected (at the specified limit).J: Trace value. Result is lower than PQL but higher than MDL.


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Client: AEI Consultants Lab Job No.: AI303008 Date Reported: 03-08-2013Project: Sunset/316456 Matrix: Soil Date Sampled: 02-28-2013

EPA 8260B (VOCs by GC/MS, Page 1 of 2) Reporting Unit: g/kg(ppb)

DATE ANALYZED 03-05 03-05-13 03-05-13 03-05-13 03-05-13 03-05-13DILUTION FACTOR (DF) 1 1 1 1 1 1

LAB SAMPLE I.D. AI303008-1 AI303008-2 AI303008-3 AI303008-4 AI303008-5CLIENT SAMPLE I.D. AEI-B1-10 AEI-B1-15 AEI-B2-10 AEI-B2-15 AEI-B3-15

COMPOUND MDL PQL MBDichlorodifluoromethane 2 5 ND ND ND ND ND NDChloromethane 2 5 ND ND ND ND ND NDVinyl Chloride 1 2 ND ND ND ND ND NDBromomethane 2 5 ND ND ND ND ND NDChloroethane 2 5 ND ND ND ND ND NDTrichlorofluoromethane 2 5 ND ND ND ND ND ND1,1-Dichloroethene 2 5 ND ND ND ND ND NDIodomethane 2 5 ND ND ND ND ND NDMethylene Chloride 5 10 ND ND ND ND ND NDtrans-1,2-Dichloroethene 2 5 ND ND ND ND ND ND1,1-Dichloroethane 2 5 ND ND ND ND ND ND2,2-Dichloropropane 2 5 ND ND ND ND ND NDcis-1,2-Dichloroethene 2 5 ND ND ND ND ND NDBromochloromethane 2 5 ND ND ND ND ND NDChloroform 2 5 ND ND ND ND ND ND1,2-Dichloroethane 1 5 ND ND ND ND ND ND1,1,1-Trichloroethane 2 5 ND ND ND ND ND NDCarbon tetrachloride 1 5 ND ND ND ND ND ND1,1-Dichloropropene 2 5 ND ND ND ND ND NDBenzene 1 2 ND ND ND ND ND NDTrichloroethene 2 4 ND ND ND ND ND ND1,2-Dichloropropane 2 5 ND ND ND ND ND NDBromodichloromethane 2 5 ND ND ND ND ND NDDibromomethane 2 5 ND ND ND ND ND NDTrans-1,3-Dichloropropene 2 5 ND ND ND ND ND NDcis-1,3-Dichloropropene 2 5 ND ND ND ND ND ND1,1,2-Trichloroethane 2 5 ND ND ND ND ND ND1,3-Dichloropropane 1 5 ND ND ND ND ND NDDibromochloromethane 2 5 ND ND ND ND ND ND2-Chloroethylvinyl ether 2 10 ND ND ND ND ND NDBromoform 2 5 ND ND ND ND ND NDIsopropylbenzene 2 5 ND ND ND ND ND NDBromobenzene 2 5 ND ND ND ND ND ND


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EPA 8260B (VOCs & Oxygenates by GC/MS, Page 2 of 2) Reporting Unit: g/kg(ppb)

COMPOUND MDL PQL MB AEI-B1-10 AEI-B1-15 AEI-B2-10 AEI-B2-15 AEI-B3-15Toluene 1 2 ND ND ND ND ND NDTetrachloroethene 2 4 ND ND ND ND ND ND1,2-Dibromoethane(EDB) 2 5 ND ND ND ND ND NDChlorobenzene 2 5 ND ND ND ND ND ND1,1,1,2-Tetrachloroethane 2 5 ND ND ND ND ND NDEthylbenzene 1 2 ND ND ND ND ND NDTotal Xylenes 2 4 ND ND ND ND ND NDStyrene 2 5 ND ND ND ND ND ND1,1,2,2-Tetrachloroethane 2 5 ND ND ND ND ND ND1,2,3-Trichloropropane 2 5 ND ND ND ND ND NDn-Propylbenzene 2 5 ND ND ND ND ND ND2-Chlorotoluene 2 5 ND ND ND ND ND ND4-Chlorotoluene 2 5 ND ND ND ND ND ND1,3,5-Trimethylbenzene 2 5 ND ND ND ND ND NDtert-Butylbenzene 2 5 ND ND ND ND ND ND1,2,4-Trimethylbenzene 2 5 ND ND ND ND ND NDSec-Butylbenzene 2 5 ND ND ND ND ND ND1,3-Dichlorobenzene 2 5 ND ND ND ND ND ND

p-Isopropyltoluene 2 5 ND ND ND ND ND ND1,4-Dichlorobenzene 2 5 ND ND ND ND ND ND

1,2-Dichlorobenzene 2 5 ND ND ND ND ND NDn-Butylbenzene 2 5 ND ND ND ND ND ND1,2,4-Trichlorobenzene 2 5 ND ND ND ND ND ND1,2-Dibromo-3-Chloropropane 2 5 ND ND ND ND ND ND

Hexachlorobutadiene 2 5 ND ND ND ND ND ND Naphthalene 2 5 ND ND ND ND ND ND1,2,3-Trichlorobenzene 2 5 ND ND ND ND ND NDAcetone 50 100 ND ND ND ND ND ND2-Butanone (MEK) 35 50 ND ND ND ND ND ND4-Methyl-2-pentanone

(MIBK)35 50 ND ND ND ND ND ND

2-Hexanone 35 50 ND ND ND ND ND NDEthanol 500 1000 ND ND ND ND ND NDMTBE 2 5 ND ND ND ND ND NDETBE 2 5 ND ND ND ND ND NDDIPE 2 5 ND ND ND ND ND NDTAME 2 5 ND ND ND ND ND NDT-Butyl Alcohol 20 50 ND ND ND ND ND ND

MDL=Method Detection Limit; PQL=Practical Quantitation Limit; MB=Method Blank; ND=Not Detected (below DF MDL), * Obtained from a higher dilution analysis. J:Trace value.


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EPA 8260B (VOCs by GC/MS, Page 1 of 2) Reporting Unit: g/kg(ppb)

DATE ANALYZED 03-05 03-05-13 03-05-13 03-05-13 03-05-13 03-05-13DILUTION FACTOR (DF) 1 1 1 1 1 1

LAB SAMPLE I.D.AI303008-

6AI303008-

7AI303008-

8AI303008-

9AI303008-

10CLIENT SAMPLE I.D. AEI-B3-20 AEI-B4-15 AEI-B4-20 AEI-B5-15 AEI-B5-20

COMPOUND MDL PQL MBDichlorodifluoromethane 2 5 ND ND ND ND ND NDChloromethane 2 5 ND ND ND ND ND NDVinyl Chloride 1 2 ND ND ND ND ND NDBromomethane 2 5 ND ND ND ND ND NDChloroethane 2 5 ND ND ND ND ND NDTrichlorofluoromethane 2 5 ND ND ND ND ND ND1,1-Dichloroethene 2 5 ND ND ND ND ND NDIodomethane 2 5 ND ND ND ND ND NDMethylene Chloride 5 10 ND ND ND ND ND NDtrans-1,2-Dichloroethene 2 5 ND ND ND ND ND ND1,1-Dichloroethane 2 5 ND ND ND ND ND ND2,2-Dichloropropane 2 5 ND ND ND ND ND NDcis-1,2-Dichloroethene 2 5 ND ND ND ND ND NDBromochloromethane 2 5 ND ND ND ND ND NDChloroform 2 5 ND ND ND ND ND ND1,2-Dichloroethane 1 5 ND ND ND ND ND ND1,1,1-Trichloroethane 2 5 ND ND ND ND ND NDCarbon tetrachloride 1 5 ND ND ND ND ND ND1,1-Dichloropropene 2 5 ND ND ND ND ND NDBenzene 1 2 ND ND ND ND ND NDTrichloroethene 2 4 ND ND ND ND ND ND1,2-Dichloropropane 2 5 ND ND ND ND ND NDBromodichloromethane 2 5 ND ND ND ND ND NDDibromomethane 2 5 ND ND ND ND ND NDTrans-1,3-Dichloropropene 2 5 ND ND ND ND ND NDcis-1,3-Dichloropropene 2 5 ND ND ND ND ND ND

1,1,2-Trichloroethane 2 5 ND ND ND ND ND ND1,3-Dichloropropane 1 5 ND ND ND ND ND NDDibromochloromethane 2 5 ND ND ND ND ND ND2-Chloroethylvinyl ether 2 10 ND ND ND ND ND NDBromoform 2 5 ND ND ND ND ND NDIsopropylbenzene 2 5 ND ND ND ND ND NDBromobenzene 2 5 ND ND ND ND ND ND


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EPA 8260B (VOCs & Oxygenates by GC/MS, Page 2 of 2) Reporting Unit: g/kg(ppb)

COMPOUND MDL PQL MB AEI-B3-20 AEI-B4-15 AEI-B4-20 AEI-B5-15 AEI-B5-20Toluene 1 2 ND ND ND ND ND NDTetrachloroethene 2 4 ND ND ND ND ND ND1,2-Dibromoethane(EDB) 2 5 ND ND ND ND ND NDChlorobenzene 2 5 ND ND ND ND ND ND1,1,1,2-Tetrachloroethane 2 5 ND ND ND ND ND NDEthylbenzene 1 2 ND ND ND ND ND NDT

Toxic Hazards: Phase II Subsurface Investigation (March 22, 2013)

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