ENGINEERING AND CONSTRUCTION DIVISION LIMITED PHASE II

TEXAS BOARD OF PROFESSIONAL ENGINEERS

REGISTRATION NUMBER F-001183

CITY OF HOUSTON DEPARTMENT OF PUBLIC WORKS AND ENGINEERING

ENGINEERING AND CONSTRUCTION DIVISION

LIMITED PHASE II ENVIRONMENTAL SITE ASSESSMENT FACILITIES CONSOLIDATION

CHELFORD CITY DIVERSION PACKAGE I WBS NO. R-000536-0024-3

CITY OF HOUSTON, TEXAS

TO

HAZEN AND SAWYER HOUSTON, TEXAS

BY

GEOTECH ENGINEERING AND TESTING

SERVICING

TEXAS, LOUISIANA, NEW MEXICO, OKLAHOMA

PROJECT NO. 15-782E

AUGUST 2016

www.geotecheng.com

i GEOTECH ENGINEERING AND TESTING

TABLE OF CONTENTS

PAGE ABBREVIATIONS ...............................................................................................................................1 1.0 EXECUTIVE SUMMARY .......................................................................................................2 2.0 INTRODUCTION .....................................................................................................................3 3.0 FIELD EXPLORATION ...........................................................................................................3

3.1 Drilling and Sampling ....................................................................................................3 3.2 Photoionization Detector (PID) Field Testing ...............................................................4 3.3 Decontamination ............................................................................................................4 3.4 Groundwater Sampling ..................................................................................................4 3.5 Borehole Grouting .........................................................................................................4 3.6 Sample Disposal.............................................................................................................4 3.7 Soil and Groundwater Samples ......................................................................................4

4.0 LABORATORY TESTS ...........................................................................................................5

4.1 Chemical Testing ...........................................................................................................5 4.2 Sample Storage ..............................................................................................................5

5.0 GENERAL SOILS CONDITIONS ...........................................................................................5

5.1 Site Conditions ...............................................................................................................5 6.0 ANALYSIS OF THE CHEMICAL TESTS ..............................................................................5

6.1 General ...........................................................................................................................5 6.2 Results of the Limited Chemical Tests ..........................................................................6

6.2.1 Total Petroleum Hydrocarbons (TPHs) .............................................................6 6.2.2 Benzene, Toluene, Ethylbenzene and Xylenes (BTEX) ....................................6 6.2.3 Methyl tert-Butyl Ether (MTBE) .......................................................................7

7.0 CONCLUSIONS........................................................................................................................8 8.0 RECOMMENDATIONS ...........................................................................................................8 9.0 QUALIFICATION OF ENVIRONMENTAL PROFESSIONALS ..........................................9 10.0 LIMITATIONS ..........................................................................................................................9 11.0 STANDARD OF CARE ............................................................................................................9 12.0 REPORT DISTRIBUTION .......................................................................................................9

ii GEOTECH ENGINEERING AND TESTING

ILLUSTRATIONS

Plate Site Vicinity Map 1 Plan of Borings 2

APPENDICES

Appendix A – Logs of Borings and Key to Log Terms and Symbols Appendix B – Results of Limited Chemical Testing by A & B Labs with Chain of Custody

Records Appendix C – Project Site Pictures Appendix D – Qualifications of Environmental Professionals

Project No. 15-782E 1 GEOTECH ENGINEERING AND TESTING

ABBREVIATIONS AOC Area of Concern

APAR Affected Property Assessment Report

BTEX Benzene, Toluene, Ethylbenzene, and Xylene

COCs or COC Chemicals of Concern or Chemical of Concern

COH City of Houston

ESA Environmental Site Assessment

LPST Leaking Petroleum Storage Tank

mg/kg Miligrams per Kilogram. A measure of soils or sediment COC concentration. Could also be expressed as parts per million (ppm)

mg/L Milligrams per Liter. A measure of groundwater COC concentration. Could also be expressed as parts per million (ppm)

MTBE Methyl tert-Butyl Ether

ND Not Detected at the Reporting Limit

OVA Organic Vapor Analyzer

PAHs Polycylic Aromatic Hydrocarbons

PCL Protective Concentration Level

pH A measure of a substance’s acidity or alkalinity

PST Petroleum Storage Tank. Could also be used as AST (Above-ground Storage Tank) or UST (Underground Storage Tank)

RCRA Metals Resource Conservation and Recovery Act Metals (A suite of analysis for the following eight metals – arsenic, barium, cadmium, chromium, lead, mercury, silver, and selenium)

REC Recognized Environmental Condition

SPLP Synthetic Precipitation Leaching Procedure

TCEQ Texas Commission on Environmental Quality

TMW Temporary Monitoring Well

TPH Total Petroleum Hydrocarbons

TRRP Texas Risk Reduction Program

TSBC Texas Specific Background Concentration

VCP Voluntary Cleanup Program

VOC Volatile Organic Compound


1.0 EXECUTIVE SUMMARY

It is planned to construct sewer line from Westpark Drive to Alief Central Lift Station in the City of Houston, Texas. The total length of the sewer line is about 5,700 linear feet. A site vicinity map is presented on Plate 1. The project alignment is located in 488 Y key maps of Harris County, Texas. Based on the results of Phase I Environmental Site Assessment, prepared by Geotech Engineering and Testing (GET Report No. 13-1024E, dated August 19, 2015), portions of the project alignment near the intersection of Westpark Drive and Village Gate Drive have recognized environmental conditions (RECs). Therefore, a Limited Phase II Environmental Site Assessment (ESA) was conducted to evaluate the presence of hydrocarbon contamination along the proposed project alignment near the Areas of Concern (AOC). The purpose of our assessment was to estimate the degree of hydrocarbon in the subsoil and groundwater near the AOC. The following is a summary of our Limited Phase II ESA: 1. The subsoils and groundwater conditions were evaluated by conducting three (3) auger borings

(Borings B-1 through B-3) to a depth of 30 feet below the existing grade along the project alignment near the AOC.

2. A Photoionization Detector (PID) was used to estimate the degree of organic vapor contamination in the soils at the boring locations.

3. Selected soil and groundwater samples were tested for Total Petroleum Hydrocarbons (TPH), Benzene, Toluene, Ethylbenzene and Xylene (BTEX) and Methyl tert-Butyl Ether (MTBE) analysis tests.

4. Based on the limited laboratory chemical testing, all selected soil samples from the respective

boring locations have TPH, BTEX and MTBE concentrations Below the Reporting Limit (BRL), except the soil sample collected from Boring B-3 (9ft-10ft), which has TPH (C28-C35) concentration level of 34 mg/kg but is lower than the Texas Commission on Environmental Quality (TCEQ) Regulatory Guidelines – Texas Risk Reduction Program (TRRP) Tier 1 Residential Protective Concentration Levels (PCLs), Exposure Pathways GWSoilIng concentration level of 200 mg/kg.

5. Our limited chemical testing on the groundwater sample obtained from Boring B-2 indicated that

the TPH (C6-C12), (C12-C28) BTEX and MTBE concentrations are below the Reporting Limit (BRL). The concentration of TPH (C28-C35) in the water sample is 3.27 mg/L, which is higher than the Texas Commission on Environmental Quality (TCEQ) Regulatory Guidelines – Texas Risk Reduction Program (TRRP) Tier 1 Residential Protective Concentration Levels (PCLs), Exposure Pathway GWGWIng

concentration level of 0.98 mg/L. 6. Due to presence of Chemical of Concerns (COCs) in groundwater sample collected from

Boring B-2 and soil sample collected from Boring B-3, the planned construction area at 13100 Westpark Drive (Easement Station 1+49.55 to Easement Station 3+00) should be declared as a Potentially Petroleum Contaminated Area (PPCA) in accordance with the City of Houston Specification No. 02105.

7. Please refer to the City of Houston’s Specifications Nos. 02120 and 02105 for additional

details regarding the excavation, stockpile, dewatering and construction worker health and safety requirements.


2.0 INTRODUCTION 2.1 General

It is planned to construct sewer line from Westpark Drive to Alief Central Lift Station in the City of Houston, Texas. The total length of the sewer line is about 5,700 linear feet. A site vicinity map is presented on Plate 1. The project alignment is located in 488 Y key maps of Harris County, Texas. Based on the results of Phase I Environmental Site Assessment, prepared by Geotech Engineering and Testing (GET Report No. 13-1024E, dated August 19, 2015), portions of the project alignment near the intersection of Westpark Drive and Village Gate Drive have recognized environmental conditions (RECs). The results of Phase I Environmental Site Assessment indicated the following REC’s along the project alignment:

REC Location REC No.

Historical Auto Station Site – located at 13100 Westpark Drive, Houston, Texas 1

Historical Auto Station Site – located at 3203 S. Dairy Ashford Road , Houston, Texas 2 Based on our discussion with Hazen and Sawyer, REC-2 will not be considered in this Phase II ESA since it is not within the revised project alignment. Only REC-1 is relevant to the alignment from Westpark Drive to Alief Central Lift Station. The purpose of our assessment was to estimate the degree of hydrocarbon contamination in the subsoils near the AOC.

3.0 FIELD EXPLORATION 3.1 Drilling and Sampling

We investigated potential contaminations of the subsoils and groundwater by conducting three (3) auger borings to a completion depth of 30 feet below the existing grade along the project alignment near the AOC. The approximate boring locations are stated below and shown on Plate 2. The specific boring locations are as follows:

Alignment/Boring Location Boring Number

13100 Westpark Drive, Houston, Texas (REC-1) B-1 through B-3 Soil samples were obtained continuously at the boring locations from the ground surface to the completion depth of the borings at 30 feet.

Soil samples were examined and classified in the field. This data is presented on the logs of borings on Plates A-1 through A-3 in Appendix A. A key to the log terms and symbols is given on Plate A-4 in Appendix A.


3.2 Photoionization Detector (PID) Field Testing

A PID was used to estimate the degree of hydrocarbon contamination in the soils in the field. Soil samples were obtained and put in airtight sealable plastic bags for approximately twenty (20) minutes to allow the organic vapors volatilize. At the end of this period, the headspace inside the plastic bag was screened with PID by inserting the PID probe tip into a narrow opening in the plastic bag seal. The PID field readings are presented on the logs of borings in Appendix A.

3.3 Decontamination

All the sampling tools and equipments were generally decontaminated in accordance with TCEQ Standard Operating Procedure – Decontamination (SOP 1.5). All tools and equipment were rinsed with pressured water and then cleaned with brush in a solution of laboratory grade detergent (Alconox) and again rinsed with pressured water in order to reduce any cross contamination between the borings.

3.4 Groundwater Sampling

Groundwater was encountered at Boring B-2. The groundwater sample was collected and stored in clean, laboratory-provided sample containers and kept in a cooler filled with ice for transfer to the chemical testing laboratory.

3.5 Borehole Grouting

After drilling and sampling, the boreholes were backfilled with cement-bentonite grout. 3.6 Sample Disposal

Soil cuttings from the drilling operation during drilling and sampling were placed in heavy duty trash bags in the field. These bags were later placed in 55-gallon drums at the GET facility. The soil cuttings will be discarded as general waste, since the results of limited laboratory chemical testing on selected soil samples from Borings B-1 through B-3 showed no recognized level of contamination for chemicals of concern (COC). Furthermore, no excess groundwater was collected that required disposal.

3.7 Soil and Groundwater Samples

The soil and groundwater samples were placed in laboratory-provided glass jars and vials in the field, labeled and placed in an ice-filled cooler. After chain of custody procedures were followed to maintain and document possession, the samples were transported to A&B Environmental Services, Inc. for limited chemical testing.


4.0 LABORATORY TESTS 4.1 Chemical Testing

Chemical tests were performed on selected soil and groundwater samples. The chemical tests consisted of Total Petroleum Hydrocarbons (TPH), Benzene, Toluene, Ethylbenzene and Xylene (BTEX) and Methyl tert-Butyl Ether (MTBE). A & B Labs performed these chemical analysis tests under a subcontract to GET. The test results are presented in Appendix B of this report.

4.2 Sample Storage

All samples tested or not tested will be stored for a period of 60 days subsequent to submittal of this report. The samples will be discarded as general waste after this period, unless we are instructed otherwise. Furthermore, no excess groundwater was collected that required disposal.

5.0 GENERAL SOILS CONDITIONS 5.1 Site Conditions

The project location is located at 13100 Westpark Drive in the City of Houston, Texas. Currently, the project alignment is covered with grass.

In general, residential and commercial developments are located in the vicinity of the project alignment. Pictures of the project alignment were taken during our site visit. These pictures are presented in Appendix C.

6.0 ANALYSIS OF THE CHEMICAL TESTS 6.1 General

Laboratory tests were conducted on selected soils and groundwater samples obtained from the borings. The TPH, BTEX and MTBE analyses were conducted on selected soils and groundwater samples to evaluate the subsoil and groundwater contamination at the boring locations. Our testing focused on analysis for hydrocarbons in soils and groundwater samples. A list of selected soils and groundwater samples tested is as follows:

Borings No.

Depth Range, ft

Sample Matrix

Chemical Tests

TPH BTEX MTBE

B-1 18 – 19 Soil √ √ √

B-1 23 – 24 Soil √ √ √

B-2 14 – 15 Soil √ √ √

B-2 21 – 22 Soil √ √ √

B-2 28 – 30 Water √ √ √

B-3 9 – 10 Soil √ √ √

B-3 17 – 18 Soil √ √ √


6.2 Results of the Limited Chemical Tests

Results of the limited chemical testing conducted by A & B Labs are presented in Appendix B of this report. A summary of the chemical test results on selected soils and groundwater samples are presented in following report sections.

6.2.1 Total Petroleum Hydrocarbons (TPH)

TPH is a term used to describe several hundred chemical compounds that originally come from crude oil. TPH analysis was conducted on six (6) soil samples and one (1) groundwater sample. Following is a summary of TPH concentrations:

Borings No. Depth

Range, ft Sample Matrix

TPH, mg/kg Critical PCLs, mg/kg C6-C12 C12-C28 C28-C35

B-1 18 – 19 Soil BRL BRL BRL

200




B-3 9 – 10 Soil BRL BRL 34


Borings No.

Depth Range, ft

Sample Matrix

TPH, mg/L Critical PCLs, mg/L C6-C12 C12-C28 C28-C35

B-2 28 – 30 Water BRL BRL 3.27 0.98 Notes: 1) Testing results were compared to TCEQ Regulatory Guidelines – TRRP Tier-1 Residential

Protective Concentration Levels (PCLs), Exposure Pathways GWSoilIng and GWGWIng. 2) BRL = Below Reporting Limit.

Our review of the limited chemical testing analysis indicates that the TPH concentrations of the tested soil samples are Below Reporting Limit (BRL) except the soil sample collected from Boring B-3 (9ft-10ft), which has TPH (C28-C35) concentration level of 34 mg/kg but was lower than the critical PCL recommended concentration at this location. However, the concentration of TPH (C28-C35) at 3.27 mg/L in the water sample collected from Boring B-2 is higher compared to the TCEQ PCL recommended concentration of 0.98 mg/L at this location.

6.2.2 Benzene, Toluene, Ethylbenzene and Xylenes (BTEX)

BTEX is the term used for benzene, toluene, ethylbenzene and three isomers of xylene typically found in petroleum products, such as gasoline and diesel fuel. BTEX typically can be found near petroleum/natural gas production sites, service stations and other areas with Underground Storage Tanks (USTs) or Above-ground Storage Tanks (ASTs) containing gasoline or other petroleum-related products. BTEX analysis was conducted on six (6) soil samples and one (1) groundwater sample. The following is a summary of BTEX concentrations:


Borings No.

Depth Range,

ft Sample Matrix

BTEX, mg/kg

Benzene Toluene Ethylbenzene Xylenes

B-1 18 – 19 Soil BRL BRL BRL BRL






Borings No.

Depth Range,

ft Sample Matrix

BTEX, mg/L

Benzene Toluene Ethylbenzene Xylenes

B-2 28 – 30 Water BRL BRL BRL BRL Note: 1) BRL = Below Reporting Limit

Our review of the limited chemical testing analysis indicates that the BTEX concentrations of the tested soil and groundwater samples are Below Reporting Limit (BRL).

6.2.3 Methyl tert-Butyl Ether (MTBE)

MTBE is a chemical compound with molecular formula C5H12O. MTBE is a volatile, flammable and colorless liquid that is immiscible with, yet reasonably soluble, in water. MTBE is a gasoline additive, used as an oxygenate and to raise the octane number. MTBE analysis was conducted on six (6) soil samples and one (1) groundwater sample. Our review of the MTBE analysis results indicates that the MTBE components of the tested samples are Below Reporting Limit (BRL). The following is a summary of MTBE concentrations:

Borings No.

Depth Range,

ft Sample Matrix

MTBE1, mg/kg

B-1 18 – 19 Soil BRL






Borings No. Depth, ft Sample Matrix MTBE, mg/L

B-2 28 – 30 Water BRL Note: 1) BRL = Below Reporting Limit


Our review of the limited chemical testing analysis indicates that the MTBE concentrations of the tested soil and groundwater samples are Below Reporting Limit (BRL).

7.0 CONCLUSIONS

Based on the limited laboratory chemical testing, all selected soil samples from the respective boring locations have TPH, BTEX and MTBE concentrations Below the Reporting Limit (BRL), except the soil sample collected from Boring B-3 (9ft-10ft), which has TPH (C28-C35) concentration level of 34 mg/kg but is lower than the Texas Commission on Environmental Quality (TCEQ) Regulatory Guidelines – Texas Risk Reduction Program (TRRP) Tier 1 Residential Protective Concentration Levels (PCLs), Exposure Pathways GWSoilIng concentration level of 200 mg/kg.

Our limited chemical testing on the groundwater sample obtained from Boring B-2 indicated that

the TPH (C6-C12), (C12-C28) BTEX and MTBE concentrations are below the Reporting Limit (BRL). The concentration of TPH (C28-C35) in the groundwater sample at 3.27 mg/L is higher than the Texas Commission on Environmental Quality (TCEQ) Regulatory Guidelines – Texas Risk Reduction Program (TRRP) Tier 1 Residential Protective Concentration Levels (PCLs), Exposure Pathway GWGWIng

concentration level of 0.98 mg/L.

Due to presence of Chemical of Concerns (COCs) in groundwater sample collected from Boring B-2 and soil sample collected from Boring B-3, the planned construction area at 13100 Westpark Drive (Easement Station 1+49.55 to Easement Station 3+00) should be declared as a Potentially Petroleum Contaminated Area (PPCA) in accordance with the City of Houston Specification No. 02105.

Please refer to the City of Houston’s Specifications Nos. 02120 and 02105 for additional

details regarding the excavation, stockpile, dewatering and construction worker health and safety requirements.

8.0 RECOMMENDATIONS

PPCA should be handled in accordance with the City of Houston Specifications (Section 02105 and 02120).

All workers working in PPCA must have appropriate training as specified by the Occupational Safety and Health Administration (OSHA) in 29 CFR 1910.120. Before beginning work in PPCA, all workers are required to complete 40 hours OSHA health and safety training.

Potential media screening, testing, handling and disposal in PPCA should be in accordance with City of Houston Specifications (Section 02105 and 02120).


9.0 QUALIFICATION OF ENVIRONMENTAL PROFESSIONALS

The GET team includes personnel from a variety of environmental disciplines. Key personnel involved in this project included the following:

Yongwan (Alex) Kwon – Chief Engineer

Edmund Chan, M.S.C.E., E.I.T. – Project Manager Detail information about the qualifications of environmental professionals is shown in Appendix D.

10.0 LIMITATIONS

The conclusions developed in this limited assessment were based on field and laboratory data taken at specific on-site locations and the selected samples tested. The tested results only represent the limited soils conditions at the boring locations. Variations and contamination could exist on the project alignment where the soils borings and chemical testing were not performed in this study.

11.0 STANDARD OF CARE The recommendations described herein were conducted in a manner consistent with the level of care and skill ordinarily exercised by members of the engineering profession practicing contemporaneously under similar conditions in the locality of the project. No other warranty or guarantee, expressed or implied, is made other than the work was performed in a proper and workmanlike manner.

12.0 REPORT DISTRIBUTION

This report was prepared for the sole and exclusive use by our client, based on specific and limited objectives. All reports, boring logs, field data, laboratory test results, maps and other documents prepared by GET as instruments of service shall remain the property of GET. Reuse of these documents is not permitted without written approval by GET. GET assumes no responsibility or obligation for the unauthorized use of this report by other parties and for purposes beyond the stated project objectives and work limitations.

SITE VICINITY MAP

PROJECT: Limited Phase II Environmental Site Assessment, Facilities Consolidation Chelford City Diversion

Package I, WBS No. R-000536-0024-3, City of Houston, Texas

SCALE: 1 INCH = 1,955 FT DATE: AUGUST 2016 PROJECT NO.: 15-782E

GEOTECH ENGINEERING AND TESTING PLATE 1

NORTH

REC-1

Legends: REC-1: Recognized Environmental Condition REC-1

PLAN OF BORINGS

PROJECT: Limited Phase II Environmental Site Assessment, Facilities Consolidation Chelford City Diversion

Package I, WBS No. R-000536-0024-3, City of Houston, Texas

SCALE: 1 INCH = 52 FT DATE: AUGUST 2016 PROJECT NO.: 15-782E

GEOTECH ENGINEERING AND TESTING PLATE 2

Project Alignment

NORTH

Legends: B-1: Boring B-1 REC-1: Recognized Environmental Condition REC-1

REC-1

B-1 B-2 B-3

APPENDIX A

Log of Borings Key to Log Terms & Symbols


KEY TO LOG TERMS AND SYMBOLS

UNIFIED SOIL CLASSIFICATIONS TERMS CHARACTERIZING SOIL STRUCTURE

Symbol Material Descriptions GW WELL GRADED-GRAVELS, GRAVEL-SAND MIXTURES,

LITTLE OR NO FINES GP POORLY GRADED GRAVELS, GRAVEL-SAND

MIXTURES, LITTLE OR NO FINES GM

SILTY GRAVELS, GRAVEL-SAND SILT MIXTURES

GC CLAY GRAVELS, GRAVEL-SAND CLAY MIXTURES a SW WELL GRADED SANDS, GRAVELLY SANDS, LITTLE

OR NO FINES SP POORLY GRADED SANDS, OR GRAVELLY SANDS,

LITTLE OR NO FINES SM SILTY SANDS, SAND-SILT MIXTURES a SC CLAYEY SANDS, SAND-SILT MIXTURES b

INORGANIC SILTS AND VERY FINE SANDS, ROCK FLOUR, SILTY OR CLAYEY FINE SANDS OR CLAYEY SILTS WITH SLIGHT PLASTICITY

CL INORGANIC CLAYS OF LOW TO MEDIUM PLASTICITY, GRAVELLY CLAYS, SANDY CLAYS, LEAN CLAYS

OL ORGANIC SILTS AND ORGANIC SILTY CLAYS OF LOW PLASTICITY

MH INORGANIC SILTS, MICACEOUS OR DIATOMACEOUS FINE SANDY OR SILTY SOILS, ELASTIC SILTS

CH 1 INORGANIC CLAYS OF HIGH PLASTICITY, FAT CLAYS

OH ORGANIC CLAYS OF MEDIUM TO HIGH PLASTICITY, ORGANIC SILTS

PT PEAT, HUMUS, SWAMP SOILS WITH HIGH ORGANIC CONTENT

COARSE GRAINED SOILS (major portion retained on No. 200 FINE GRAINED SOILS (major portion passing No. 200 Sieve): Sieve): Includes (1) clean gravels and sands, and (2) silty or clayey Include (1) inorganic or organic silts and clays, (2) gravelly, gravels and sands. Conditions rated according to standard sandy, or silty clays, and (3) clayey silts. Consistency is rated penetration test (SPT)* as performed in the field. according to shearing strength as indicated by hand penetrometer readings or by unconfined compression tests.

Descriptive Terms Blows Per Foot*

Very Loose 0 – 4

Loose 5 – 10

Medium Dense 11 – 30

Dense 31 – 50

Very Dense over 50

* 140 pound weight having a free fall of 30-inch

SOIL SAMPLERS NOTE: Slickensided and fissured clays may have lower unconfined

compressive strengths than shown above because of weakness or cracks in the soil. The consistency ratings of such soils are based

on hand penetrometer readings.

TERMS CHARACTERIZING ROCK PROPERTIES

VERY SOFT OR PLASTIC Can be remolded in hand: corresponds in consistency up to very stiff in soils.

SOFT Can be scratched with fingernail. MODERATELY HARD Can be scratched easily with knife; cannot be scratched with fingernail.

Difficult to scratch with knife. VERY HARD Cannot be scratched with knife. POORLY CEMENTED OR FRIABLE Easily crumbled. CEMENTED Bounded Together by chemically precipitated materials. UNWEATHERED Rock in its natural state before being exposed to atmospheric agents. SLIGHTLY WEATHERED Noted predominantly by color change with no disintegrated zones. WEATHERED Complete color change with zones of slightly decomposed rock. EXTREMELY WEATHERED Complete color change with consistency, texture, and general appearance or soil.

GEOTECH ENGINEERING AND TESTING PLATE A-4

Slickensided - Having incline planes of weakness that

are slick and glossy in appearance. Fissured - Containing shrinkage cracks frequently

filled with fine sand or silt: usually vertical. Laminated - Composed of thin layers of varying colors

and soil sample texture. Interbedded - Composed of alternate layers of different

soil types. Calcareous - Containing appreciable quantities of

calcium carbonate. Well Graded - Having wide range in grain sizes and

substantial amounts of all intermediate particle sizes.

Poorly Graded - Predominantly of one grain size, or having a range of sizes with some intermediate sizes missing.

Pocket - Inclusion of material of different texture that is smaller than the diameter of the sample.

Parting - Inclusion less than ⅛-inch thick extending through the sample.

Seam - Inclusion ⅛- to 3-inch thick extending through the sample.

Layer - Inclusion greater than 3-inch thick extending through the sample.

Interlayered - Soils sample composed of alternating layers of different soil types.

Intermixed - Soil samples composed of pockets of different soil type and layered or laminated structure is not evident.

Descriptive Term

Undrained Shear Strength

Ton/Sq. Ft.

Very Soft Less than 0.13

Soft 0.13 to 0.25

Firm 0.25 to 0.50

Stiff 0.50 to 1.00

Very Stiff 1.00 to 2.00

Hard 2.00 or higher SHELBY TUBE SAMPLER

STANDARD PENETRATION TEST

AUGER SAMPLING

FILL SOILS

ML

APPENDIX B

Results of Limited Chemical Testing by A & B Labs with Chain of Custody Records


16060163

10100 East Freeway, Suite 100, Houston, TX 77029 tel: 713-453-6060, fax: 713-453-6091, http://www.ablabs.com

Laboratory Analysis Report

Job ID :

Total Number of Pages: 17

City, State, Zip:

15-782E / Limited Phase II ESA from Westpark Drive to Alief-CentralLift Station Facilities Consolidation Chelford City Diversion P

Edmund Chan

Client Address:

Client Name:

Client Project Name :

P.O.#.:

Sample Collected By:

800 Victoria Drive

Geotech Engineering & TestingReport To :

Attn:

Houston, Texas, 77022

Edmund Chan

Date Collected: 06/01/16

Client Sample ID A&B Sample ID

A&B Labs has analyzed the following samples...

Matrix

B1 18'-19' 16060163.01Soil

B1 23'-24' 16060163.02Soil

B2 14'-15' 16060163.03Soil

B2 21'-22' 16060163.04Soil

B2 28'-30' 16060163.05Water

B3 9'-10' 16060163.06Soil

B3 17'-18' 16060163.07Soil

This report cannot be reproduced, except in full, without prior written permission of A&B Labs. Results shown relate only to the items tested. Samples are assumed to be inacceptable condition unless otherwise noted. Blank correction is not made unless otherwise noted. Air concentrations reported are based on field sampling information providedby client. Soil samples are reported on a wet weight basis unless otherwise noted. Uncertainty estimates are available on request.

6/9/2016

Title:

Released By:

Senior Project Manager

Shantall Carpenter

Date Received : 06/02/2016 15:43

This Laboratory is NELAP (T104704213-16-14) accredited. Effective: 04/01/2016; Expires: 03/31/2017

I am the laboratory manager, or his/her designee, and I am responsible for the release of this data package. This laboratory data package has beenreviewed and is complete and technically compliant with the requirements of the methods used, except where noted in the attached exception reports.I affirm, to the best of my knowledge that all problems/anomalies observed by this laboratory (and if applicable, any and all laboratories subcontractedthrough this laboratory) that might affect the quality of the data, have been identified in the Laboratory Review Checklist, and that no information ordata have been knowingly withheld that would affect the quality of the data.

Date:

Scope: Non-Potable Water, Drinking Water, Air, Solid, Biological Tissue, Hazardous Waste

Page 1 of 17

General Term Definition

BRL

Front-Wt

Below Reporting Limit

Front Weight

Back WeightBack-Wt

cfu colony-forming units

Conc. Concentration

D.F. Dilution Factor

LCS Laboratory Check Standard

LCSD Laboratory Check Standard Duplicate

MS Matrix Spike

MSD Matrix Spike Duplicate

Molecular WeightMW

RPD

ppm parts per million

Relative Percent Difference

TNTC Too numerous to count

Post-Wt

Pre-Wt Previous Weight

Q Qualifier

RegLimit Regulatory Limit

RptLimit Reporting Limit

T Time

Post Weight

surr Surrogate

SDL Sample Detection Limit

16060163

L A B O R A T O R Y T E R M A N D Q U A L I F I E R D E F I N I T I O N R E P O R T

Date:Job ID : 6/9/2016

Qualifier Definition

Matrix Spike and/or Matrix Spike Duplicate recovery is below laboratory control limits due to matrix interference."The samplerandomly selected as QC for this batch was not part of your project. Therefore, this sample matrix is not applicable to your projectsamples."

M2

Surrogate recovery is above control limit. Results may be biased high.S1

Page 2 of 17

L A B O R A T O R Y T E S T R E S U L T S

Soil

16060163.01

Sample Matrix

Job Sample ID:

AnalystDate TimeQReg LimitRpt LimitDFUnitsResultParameter/Test DescriptionTest Method

B1 18'-19'

Other Information:

Time Collected:

Client Sample ID:

Date Collected:

Edmund ChanAttn:

15-782E / Limited Phase II ESA from Westpark Drive to Alief-CentralLift Station Facilities Consolidation Chelford City DiversionPackage I, Houston, T

Project Name:

Geotech Engineering & TestingClient Name:

Date16060163Job ID :

6/9/2016

06/01/16

11:00 18.1% Moisture

% MoistureSM 2540G

LEB06/03/16 15:200.11%18.1% Moisture

Total Petroleum HydrocarbonsTX 1005

SuG06/03/16 20:1328.20.975mg/KgBRLC6-C12

SuG06/03/16 20:1324.20.975mg/KgBRL>C12-C28

SuG06/03/16 20:1321.10.975mg/KgBRL>C28-C35

SuG06/03/16 20:130.975mg/KgBRLTotal C6-C35

SuG06/03/16 20:1360-1430.975%92.21-Chlorooctane(surr)

SuG06/03/16 20:1360-1500.975%92.5Chlorooctadecane(surr)

Purgeable AromaticsSW-846 8021B

GLQ06/07/16 05:050.00611.00mg/KgBRLMTBE

GLQ06/07/16 05:050.00611.00mg/KgBRLBenzene

GLQ06/07/16 05:050.00611.00mg/KgBRLToluene

GLQ06/07/16 05:050.00611.00mg/KgBRLEthylbenzene

GLQ06/07/16 05:050.0121.00mg/KgBRLm- & p-Xylenes

GLQ06/07/16 05:050.00611.00mg/KgBRLo-Xylene

GLQ06/07/16 05:050.0181.00mg/KgBRLXylenes

GLQ06/07/16 05:0581-1111.00%96.5Trifluorotoluene(surr)

Soil results reported on dry weight basis

Page 3 of 17


Soil

16060163.02

Sample Matrix

Job Sample ID:


B1 23'-24'

Other Information:

Time Collected:

Client Sample ID:

Date Collected:

Edmund ChanAttn:


Project Name:



6/9/2016

06/01/16


% MoistureSM 2540G

LEB06/03/16 15:200.11%10.5% Moisture


SuG06/03/16 20:4225.30.956mg/KgBRLC6-C12

SuG06/03/16 20:4221.70.956mg/KgBRL>C12-C28

SuG06/03/16 20:4218.90.956mg/KgBRL>C28-C35


SuG06/03/16 20:4260-1430.956%1251-Chlorooctane(surr)

SuG06/03/16 20:4260-1500.956%123Chlorooctadecane(surr)


GLQ06/07/16 05:320.00561.01mg/KgBRLMTBE







GLQ06/07/16 05:3281-1111.01%97Trifluorotoluene(surr)


Page 4 of 17


Soil

16060163.03

Sample Matrix

Job Sample ID:


B2 14'-15'

Other Information:

Time Collected:

Client Sample ID:

Date Collected:

Edmund ChanAttn:


Project Name:



6/9/2016

06/01/16


% MoistureSM 2540G

LEB06/03/16 15:200.11%19% Moisture


SuG06/07/16 16:2629.71.0141mg/KgBRLC6-C12

SuG06/07/16 16:2625.41.0141mg/KgBRL>C12-C28

SuG06/07/16 16:2622.21.0141mg/KgBRL>C28-C35





GLQ06/07/16 06:000.00621.00mg/KgBRLMTBE







GLQ06/07/16 06:0081-1111.00%95Trifluorotoluene(surr)


Page 5 of 17


Soil

16060163.04

Sample Matrix

Job Sample ID:


B2 21'-22'

Other Information:

Time Collected:

Client Sample ID:

Date Collected:

Edmund ChanAttn:


Project Name:



6/9/2016

06/01/16


% MoistureSM 2540G

LEB06/03/16 15:200.11%12.1% Moisture


SuG06/03/16 21:4225.70.953mg/KgBRLC6-C12

SuG06/03/16 21:42220.953mg/KgBRL>C12-C28

SuG06/03/16 21:4219.20.953mg/KgBRL>C28-C35


SuG06/03/16 21:42S160-1430.953%2641-Chlorooctane(surr)

SuG06/03/16 21:42S160-1500.953%231Chlorooctadecane(surr)


GLQ06/07/16 06:280.00571.00mg/KgBRLMTBE









Page 6 of 17


Water

16060163.05

Sample Matrix

Job Sample ID:


B2 28'-30'

Other Information:

Time Collected:

Client Sample ID:

Date Collected:

Edmund ChanAttn:


Project Name:



6/9/2016

06/01/16

13:30 % Moisture


SuG06/04/16 03:091.041.035mg/LBRLC6-C12

SuG06/04/16 03:091.041.035mg/LBRL>C12-C28

SuG06/04/16 03:091.141.035mg/L3.27>C28-C35

SuG06/04/16 03:091.035mg/L3.27Total C6-C35

SuG06/04/16 03:0970-1251.035%1211-Chlorooctane(surr)

SuG06/04/16 03:09S170-1251.035%132Chlorooctadecane(surr)


GLQ06/07/16 15:170.0021mg/LBRLMTBE

GLQ06/07/16 15:170.0021mg/LBRLBenzene

GLQ06/07/16 15:170.0021mg/LBRLToluene

GLQ06/07/16 15:170.0021mg/LBRLEthylbenzene

GLQ06/07/16 15:170.0041mg/LBRLm- & p-Xylenes

GLQ06/07/16 15:170.0021mg/LBRLo-Xylene

GLQ06/07/16 15:170.0061mg/LBRLXylenes

GLQ06/07/16 15:1775-1251%100Trifluorotoluene(surr)


Page 7 of 17


Soil

16060163.06

Sample Matrix

Job Sample ID:


B3 9'-10'

Other Information:

Time Collected:

Client Sample ID:

Date Collected:

Edmund ChanAttn:


Project Name:



6/9/2016

06/01/16


% MoistureSM 2540G

LEB06/03/16 15:200.11%20.5% Moisture


SuG06/03/16 22:4330.11.010mg/KgBRLC6-C12

SuG06/03/16 22:4325.81.010mg/KgBRL>C12-C28

SuG06/03/16 22:4322.51.010mg/Kg34>C28-C35

SuG06/03/16 22:431.010mg/Kg34Total C6-C35




GLQ06/07/16 06:550.00631.01mg/KgBRLMTBE









Page 8 of 17


Soil

16060163.07

Sample Matrix

Job Sample ID:


B3 17'-18'

Other Information:

Time Collected:

Client Sample ID:

Date Collected:

Edmund ChanAttn:


Project Name:



6/9/2016

06/01/16


% MoistureSM 2540G

LEB06/03/16 15:200.11%18% Moisture


SuG06/03/16 23:1327.40.947mg/KgBRLC6-C12

SuG06/03/16 23:1323.40.947mg/KgBRL>C12-C28

SuG06/03/16 23:1320.40.947mg/KgBRL>C28-C35





GLQ06/07/16 07:230.00611.00mg/KgBRLMTBE









Page 9 of 17

Q U A L I T Y C O N T R O L C E R T I F I C A T E

Date :16060163Job ID :

LEBell

Samples in This QC Batch :

Qb16060363

% Moisture

16060163.01,02

Reporting Units :

06/03/16QC Batch ID :

Method :

Created Date :

Analysis :

Created By :

%SM 2540G

6/9/2016

Prep Date : 06/03/16 14:15SM 2540GPrep Method :PB16060328Sample Preparation : LEBellPrep By :

QC Type: Method Blank

D.F. RptLimitParameter Result Units QualCAS #

% 0.1BRL 1% Moisture

QC Type: Duplicate

16060133.02QC Sample ID:

Parameter UnitsSampleResult QualRPD

RPDCtrlLimit

QCSampleResult

%% Moisture 7.69 9.4 207.0

Refer to the Definition page for terms.

Page 10 of 17



LEBell


Qb16060364

% Moisture

16060163.03,04,06,07

Reporting Units :


Method :

Created Date :

Analysis :

Created By :

%SM 2540G

6/9/2016

Prep Date : 06/03/16 14:15SM 2540GPrep Method :PB16060328Sample Preparation : LEBellPrep By :



% 0.1BRL 1% Moisture

QC Type: Duplicate


Parameter UnitsSampleResult QualRPD

RPDCtrlLimit

QCSampleResult

%% Moisture 19.3 1.6 2019.0


Page 11 of 17



SGautam


Qb16060380

Total Petroleum Hydrocarbons

16060163.01,02,03,04,06,07

Reporting Units :


Method :

Created Date :

Analysis :

Created By :

mg/KgTX 1005

6/9/2016

Prep Date : 06/03/16 13:00SW-846 5035APrep Method :PB16060340Sample Preparation : SGautamPrep By :



mg/Kg 23.7BRL 1C6-C12 TPH-1005-1

mg/Kg 20.3BRL 1>C12-C28 TPH-1005-2

mg/Kg 17.7BRL 1>C28-C35 TPH-1005-4

mg/KgBRL 1Total C6-C35

% 60-15096.5 1Chlorooctadecane(surr) 3386-33-2

% 60-143101 11-Chlorooctane(surr) 111-85-3

%RecoveryCtrlLimit

LCSDResult

LCSResult

RPDCtrlLimitRPD

LCSSpk Added

LCSD% Rec

LCS% RecParameter

LCSDSpk Added

QC Type: LCS and LCSD

Qual

3.6113500 75-125109 20544C6-C12 500 564

2.8101500 75-12598.2 20491>C12-C28 500 505

6.1119500 75-125112 20558>C28-C35 500 593

QC Type: MS and MSD


ParameterSampleResult

RPDCtrlLimit

MSResult

MSSpk Added RPD Qual

MS% Rec

MSDSpk Added

MSD% Rec

%RecCtrlLimit

MSDResult

BRLC6-C12 500 107 3.8500 516536 20 75-125103

BRL>C12-C28 500 101 3.2500 491507 20 75-12597.4

39.4>C28-C35 500 104 0.4500 559557 20 75-125104


Page 12 of 17



GLQuick


Qb16060841

Purgeable Aromatics

16060163.01,02,03,04,06,07

Reporting Units :


Method :

Created Date :

Analysis :

Created By :

mg/KgSW-846 8021B

6/9/2016

Prep Date : 06/06/16 16:00SW-846 5030CPrep Method :PB16060831Sample Preparation : GLQuickPrep By :



mg/Kg 0.005BRL 1MTBE 1634-04-4

mg/Kg 0.005BRL 1Benzene 71-43-2

mg/Kg 0.005BRL 1Toluene 108-88-3

mg/Kg 0.005BRL 1Ethylbenzene 100-41-4

mg/Kg 0.01BRL 1m- & p-Xylenes 108-38-3&106-42-3

mg/Kg 0.005BRL 1o-Xylene 95-47-6

mg/Kg 0.015BRL 1Xylenes 1330-20-7

% 81-11198.5 1Trifluorotoluene(surr) 98-08-8

%RecoveryCtrlLimit

LCSDResult

LCSResult

RPDCtrlLimitRPD

LCSSpk Added

LCSD% Rec

LCS% RecParameter

LCSDSpk Added


Qual

0.0900.05 67.2-13290 200.045MTBE 0.05 0.045

0.0840.05 76.2-12884 200.042Benzene 0.05 0.042

0.0860.05 74.2-12686 200.043Toluene 0.05 0.043

2.3860.05 79.4-12588 200.044Ethylbenzene 0.05 0.043

0.0870.1 76.3-12687 200.087m- & p-Xylenes 0.1 0.087

0.0900.05 77.1-12390 200.045o-Xylene 0.05 0.045

0.0880.15 77.2-12588 200.132Xylenes 0.15 0.132

QC Type: MS and MSD



RPDCtrlLimit

MSResult


MS% Rec

MSDSpk Added

MSD% Rec

%RecCtrlLimit

MSDResult

BRLMTBE 0.05 90 4.60.05 0.0430.045 26 76-13486

BRLBenzene 0.05 74 0.00.05 0.0370.037 19 68-13874

BRLToluene 0.05 64.8 M23.10.05 0.0380.039 19 67-13562.8

BRLEthylbenzene 0.05 51.8 M23.80.05 0.0290.028 20 71-12753.8

BRLm- & p-Xylenes 0.1 45.8 M22.20.1 0.0550.054 27 56-13546.8

BRLo-Xylene 0.05 46.6 M20.00.05 0.0280.028 24 56-13446.6

BRLXylenes 0.15 54.7 M21.20.15 0.0830.082 25 59-13455.3


Page 13 of 17



GLQuick


Qb16060846

Purgeable Aromatics

16060163.05

Reporting Units :


Method :

Created Date :

Analysis :

Created By :

mg/LSW-846 8021B

6/9/2016

Prep Date : 06/07/16 10:00SW-846 5030CPrep Method :PB16060834Sample Preparation : GLQuickPrep By :



mg/L 0.002BRL 1MTBE 1634-04-4

mg/L 0.002BRL 1Benzene 71-43-2

mg/L 0.002BRL 1Toluene 108-88-3

mg/L 0.002BRL 1Ethylbenzene 100-41-4

mg/L 0.004BRL 1m- & p-Xylenes 108-38-3&106-42-3

mg/L 0.002BRL 1o-Xylene 95-47-6

mg/L 0.006BRL 1Xylenes 1330-20-7

% 75-125100 1Trifluorotoluene(surr) 98-08-8

%RecoveryCtrlLimit

LCSDResult

LCSResult

RPDCtrlLimitRPD

LCSSpk Added

LCSD% Rec

LCS% RecParameter

LCSDSpk Added


Qual

0900.02 56.2-16290 300.018MTBE 0.02 0.018

0850.02 84.6-12585 300.017Benzene 0.02 0.017

0900.02 77.3-12990 300.018Toluene 0.02 0.018

0900.02 84.1-12290 300.018Ethylbenzene 0.02 0.018

0900.04 84.5-12490 300.036m- & p-Xylenes 0.04 0.036

0900.02 84.4-12490 300.018o-Xylene 0.02 0.018

0900.06 85-12390 300.054Xylenes 0.06 0.054

QC Type: MS and MSD



RPDCtrlLimit

MSResult


MS% Rec

MSDSpk Added

MSD% Rec

%RecCtrlLimit

MSDResult

BRLMTBE 0.02 90.9 00.02 0.0190.019 21 56.2-16290.9

BRLBenzene 0.02 90 5.70.02 0.0170.018 17 84.6-12585

BRLToluene 0.02 89.1 00.02 0.0180.018 29 77.3-12989.1

BRLEthylbenzene 0.02 90 00.02 0.0180.018 30 84.1-12290

BRLm- & p-Xylenes 0.04 92.5 00.04 0.0370.037 22 84.5-12492.5

BRLo-Xylene 0.02 95 00.02 0.0190.019 21 84.4-12495

BRLXylenes 0.06 93.3 00.06 0.0560.056 21 85-12393.3


Page 14 of 17



SGautam


Qb16060860

Total Petroleum Hydrocarbons

16060163.05

Reporting Units :


Method :

Created Date :

Analysis :

Created By :

mg/LTX 1005

6/9/2016

Prep Date : 06/03/16 10:00TX 1005Prep Method :PB16060845Sample Preparation : SGautamPrep By :



mg/L 1BRL 1C6-C12 TPH-1005-1

mg/L 1BRL 1>C12-C28 TPH-1005-2

mg/L 1.1BRL 1>C28-C35 TPH-1005-4

mg/LBRL 1Total C6-C35

% 70-12574.9 1Chlorooctadecane(surr) 3386-33-2

% 70-12577.4 11-Chlorooctane(surr) 111-85-3

%RecoveryCtrlLimit

LCSDResult

LCSResult

RPDCtrlLimitRPD

LCSSpk Added

LCSD% Rec

LCS% RecParameter

LCSDSpk Added


Qual

2.510243 75-12599.5 2042.8C6-C12 43 43.9

3.797.943 75-125102 2043.7>C12-C28 43 42.1

2.199.543 75-125102 2043.7>C28-C35 43 42.8

QC Type: MS and MSD



RPDCtrlLimit

MSResult


MS% Rec

MSDSpk Added

MSD% Rec

%RecCtrlLimit

MSDResult

BRLC6-C12 44.5 96.7 5.444.5 45.543.1 20 75-125102

BRL>C12-C28 44.5 100 3.644.5 43.545.1 20 75-12596.7

3.27>C28-C35 44.5 97.6 344.5 45.446.7 20 75-12594.7


Page 15 of 17

Page 16 of 17

Sample Condition Checklist

pH Paper ID : n/a Thermometer ID : 140539631

Sample pH : n/a Temperature : 3.9+0.5cf=4.4°C

Client Name : Geotech Engineering & Testing

Time Received : 3:43PMDate Received : 06/02/2016 A&B JobID : 16060163

Sample 05 is a water, the rest are soils. Soil samples were received in pre weighed VOAs and 1-4oz glass jar per sample (terra core method 5035). -AR06.02.2016

Comments : Include actions taken to resolve discrepancies/problem:

X Has client been contacted about sub-out18

X Sample accepted.17.

X VOA vials completely filled.16.

X Samples were received within the hold time.15.

X Sample volume is sufficient for analyses requested.14.

X Bottle count on C-O-C matches bottles found.13.

X Sample ID labels match C-O-C ID's12.

X All samples were logged or labeled.11.

X Sample(s) were received with proper preservative10.

X Sample(s) were received in appropriate container(s).9.

Matrix:

Sludge Cassette Tube BulkSolidLiquidSoilWater Badge Food Other8.

X Sample containers arrived intact. (If no comment).7.

X Sample(s) received with signed sample custody seal.6.

X C-O-C signed and dated.5.

X Sample(s) received with chain-of-custody.4.

X If yes, ice in cooler.3.

X Sample(s) in a cooler.2.

X Cooler seal present and signed.1.

N/ANoYesCheck Points

Received by : Check in by/date : AReyes / 06/02/2016AReyes

Phone : www.ablabs.com 713-453-6060

Page 17 of 17

APPENDIX C

Project Site Pictures


PROJECT PICTURES

Project No. 15-782E

P-1 (A Picture of the Project Alignment)

P-2 (A Picture of the Drilling Operation at Boring B-1)

APPENDIX D

Qualifications of Environmental Professionals


YONGWAN (ALEX) KWON, P.E. CHIEF ENGINEER

SUMMARY Mr. Kwon is an engineering manager at Geotech Engineering and Testing (GET) with the responsibility for daily operations of the environmental and geotechnical engineering department. He is involved in data analyses and the preparation of reports and recommendations. He has over 12 years of experience in the field of environmental and geotechnical engineering. His environmental engineering experience is related to residential and commercial developments, educational facilities, roads, parks, underground utilities, buildings, flood control channels, community centers, and airports. His other experience includes groundwater and soil contamination modeling. PROFESSIONAL REGISTRATION Licensed Professional Engineer EDUCATION 2009 M.S. – University of Florida, Gainesville, Florida 1998 M.S. – Hanyang University, Seoul, Korea 1996 B.S. – Hanyang University, Seoul, Korea EXPERIENCE 2000 – 2007 Korea Institute Construction Technology 2010 – Present Geotech Engineering and Testing – Houston, Texas Chief Engineer

EDMUND CHAN, M.S.C.E., E.I.T. PROJECT MANAGER

SUMMARY Mr. Edmund Chan is a project manager at Geotech Engineering and Testing (GET) with the responsibility for the daily operations of environmental and geotechnical explorations, data analysis and the preparation of reports and recommendations. His environmental engineering experience is related to public infrastructure, residential, commercial developments, educational facilities, roads, underground utilities, landfills and buildings. Mr. Chan actively involved in environmental site assessment projects, including Phase I and Phase II Environmental Site Assessment Studies. PROFESSIONAL REGISTRATION Engineer-in-Training EDUCATION 2014 M.S. – The University of Oklahoma in Norman 2012 B.S. – The University of Oklahoma in Norman EXPERIENCE 2015 – Present Geotech Engineering and Testing – Houston, Texas Project Manager

Documents

ENGINEERING AND CONSTRUCTION DIVISION LIMITED PHASE II