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<ul><li><p>PHASE I ENVIRONMENTAL SITE ASSESSMENT FOR TWO PARCELS OF A PROPERTY LOCATED AT THE CITY </p><p>OF AUSTIN FM 812 LANDFILL AUSTIN, TX 78719 </p><p> Prepared for </p><p> CITY OF AUSTIN </p><p>P.O. Box 1088 Austin, TX 78767 </p><p>Prepared by </p><p>WESTON SOLUTIONS, INC. 2705 Bee Cave Road, Suite 100 </p><p>Austin, Texas 78746 512-651-7100 Fax 512-651-7101 </p><p> Michell Hales Jeffrey R. Henke, P.G. </p><p>Project Manager Senior Technical Reviewer Environmental Professional </p><p>March 2013 </p><p>W.O. No. 06141.045.001.0001 </p></li><li><p>Weston Solutions, Inc. Phase I Environmental Site Assessment Two Parcels of Property Located at the City of Austin FM 812 Landfill, Austin, TX </p><p> H:\City Of Austin - Public Works Dept (06141)\2010-2012 Environmental Rotation List\06141.045.001 FM 812 Landfill ESA\19.0 Final Deliverables\Final Phase I ESA_03.14.13.Doc </p><p>ii </p><p>TABLE OF CONTENTS </p><p>Section Page </p><p>SUMMARY .............................................................................................................................. S-1 1. INTRODUCTION .............................................................................................................. 1-1</p><p>1.1 SCOPE OF WORK AND PURPOSE........................................................................ 1-11.2 SPECIAL TERMS AND CONDITIONS .................................................................. 1-21.3 LIMITATIONS AND EXCEPTIONS OF ASSESSMENT ...................................... 1-21.4 PERSONNEL PERFORMING ESAS AND QUALIFICATIONS ........................... 1-21.5 USER RESPONSIBILITIES ..................................................................................... 1-31.6 DISCLAIMERS ......................................................................................................... 1-4</p><p>2. PROPERTY DESCRIPTION ........................................................................................... 2-12.1 PROPERTY DESCRIPTION, LOCATION, AND PROPERTY HISTORY ........... 2-12.2 SURROUNDING PROPERTIES .............................................................................. 2-4</p><p>3. RECORDS REVIEW ......................................................................................................... 3-13.1 PREVIOUSLY PREPARED ENVIRONMENTAL REPORTS ............................... 3-13.2 STANDARD ENVIRONMENTAL RECORD SOURCES .................................... 3-133.3 ORPHAN SITES SUMMARY ................................................................................ 3-173.4 LOCAL GOVERNMENT AND/OR PRIVATE INQUIRIES ................................ 3-183.5 WATER AND OIL WELL SUMMARY ................................................................ 3-193.6 PHYSICAL SETTING ............................................................................................ 3-213.7 AERIAL PHOTOGRAPH REVIEW ...................................................................... 3-223.8 TOPOGRAPHIC MAP REVIEW ........................................................................... 3-243.9 CITY DIRECTORY ................................................................................................ 3-263.10 SANBORN MAP REVIEW .................................................................................... 3-273.11 CHAIN-OF-TITLE .................................................................................................. 3-273.12 ENVIRONMENTAL LIEN ..................................................................................... 3-273.13 TAX MAP REPORT ............................................................................................... 3-283.14 BUILDING PERMIT REPORT .............................................................................. 3-28</p><p>4. SITE RECONNAISSANCE AND INTERVIEWS .......................................................... 4-14.1 SITE VISIT ................................................................................................................ 4-14.2 INTERVIEWS RECORDS ........................................................................................ 4-14.3 WASTE GENERATION, PERMITTING AND UTILITIES ................................... 4-14.4 HAZARDOUS/DANGEROUS MATERIALS ......................................................... 4-34.5 ADDITIONAL OBSERVATIONS AND INFORMATION..................................... 4-4</p><p>5. EXCEPTIONS, DELETIONS, AND GAPS .................................................................... 5-1</p></li><li><p>Weston Solutions, Inc. Phase I Environmental Site Assessment Two Parcels of a Property Located at the City of Austin FM 812 Landfill, Austin, TX </p><p>TABLE OF CONTENTS (CONTINUED) </p><p> H:\City Of Austin - Public Works Dept (06141)\2010-2012 Environmental Rotation List\06141.045.001 FM 812 Landfill ESA\19.0 Final Deliverables\Final Phase I ESA_03.14.13.Doc </p><p>iii </p><p>6. FINDINGS, OPINIONS, AND CONCLUSIONS ............................................................ 6-17. REFERENCES ................................................................................................................... 7-18. QUALIFICATIONS ........................................................................................................... 8-1 LIST OF ACRONYMS </p><p>LIST OF FIGURES </p><p>Figure 1 Property Location Map Figure 2 Property Layout Map Figure 3 Property Vicinity Map </p><p>LIST OF APPENDICES </p><p>APPENDIX A SITE PHOTOGRAPHS APPENDIX B DATABASE SEARCH APPENDIX C AERIAL PHOTOGRAPHS APPENDIX D TOPOGRAPHIC MAPS APPENDIX E CITY DIRECTORY ABSTRACT APPENDIX F SANBORN MAPS APPENDIX G LIEN SEARCH REPORT APPENDIX H TAX MAP AND BUILDING PERMIT REPORTS APPENDIX I SUPPLEMENTARY INFORMATION </p></li><li><p>Weston Solutions, Inc. Phase I Environmental Site Assessment Two Parcels of Property Located at the City of Austin FM 812 Landfill, Austin, TX </p><p>H:\City Of Austin - Public Works Dept (06141)\2010-2012 Environmental Rotation List\06141.045.001 FM 812 Landfill ESA\19.0 Final Deliverables\Final Phase I ESA_03.14.13.Doc </p><p>S-1 </p><p>SUMMARY </p><p>Weston Solutions, Inc (WESTON) conducted a Phase I Environmental Site Assessment (ESA) </p><p>for a portion of the FM 812 Landfill property located at 10108 FM 812, Austin, TX 78719. The </p><p>ESA was conducted in strict accordance with the approved proposal dated 20 July 2012, 40 Code </p><p>of Federal Regulations (CFR) Part 312 Standards and Practices for All Appropriate Inquiries </p><p>(AAI), and American Society for Testing and Materials (ASTM) International Standard </p><p>Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process </p><p>E1527-05. Any exceptions to, or deletions from, this practice are described in Section 5 of this </p><p>report. </p><p>The Phase I site visit was performed on 07 September 2012 by Lori Kalich and Mary Tibbets </p><p>(WESTON). Ms. Kalich and Ms. Tibbets were accompanied on the visit by Mr. Conley Leloux, </p><p>Waste Management Program Manager with the City of Austin (COA). The subject property </p><p>consists of two non-contiguous parcels of property located within the FM 812 Landfill property. </p><p>According to Mr. Conley Leloux, the portion of landfill property covered by the landfill permit is </p><p>approximately 360 acres. The Travis County Appraisal District reports the size of the entire FM </p><p>812 Landfill property as 391 acres. The subject property consists of two parcels; the southern </p><p>parcel is approximately 46 acres, and the northeastern parcel is approximately 10 acres. </p><p>According to the COA, the subject property parcels have never been used for waste disposal </p><p>activities. Approximate boundaries of the subject property were provided by the property owner, </p><p>the COA. </p><p>Current Subject Property Operations </p><p>A portion of the southern parcel of the subject property was used for landfill operations and as a </p><p>staging area for recyclable waste materials. According to the COA, these recyclable materials </p><p>were transported off-site on a regular basis. The northeastern parcel of the subject property is </p><p>undeveloped land. The southern parcel of the subject property includes four buildings; several </p><p>unpaved parking areas; an open-sided shed area for temporary staging of used oil, air </p><p>conditioners, scrap metal, and used tires; and a trash bin storage area for the storage of damaged </p><p>trash cans and recycling bins. The eastern and western portions of the southern parcel of the </p></li><li><p>Weston Solutions, Inc. Phase I Environmental Site Assessment Two Parcels of a Property Located at the City of Austin FM 812 Landfill, Austin, TX </p><p>SUMMARY </p><p> H:\City Of Austin - Public Works Dept (06141)\2010-2012 Environmental Rotation List\06141.045.001 FM 812 Landfill ESA\19.0 Final Deliverables\Final Phase I ESA_03.14.13.Doc </p><p>S-2 </p><p>subject property are leased for agricultural use. Grass for hay was planted there at the time of the </p><p>site visit. </p><p>At the time of the site visit in September 2012, the temporary staging area was used by the City </p><p>to store recyclables such as used oil, used anti-freeze, used oil filters, batteries, scrap metal, and </p><p>white goods (household appliances, including freezers and refrigerators). The used oil, used </p><p>anti-freeze, and used oil filters were stored in drums in a covered, open-sided shed in the </p><p>temporary staging area. According to COA, recyclables staging activities are no longer </p><p>conducted on the southern parcel as of January 2013. Used tires were also staged on-site until </p><p>transported off-site for recycling. Waste asphalt from public works roadway resurfacing projects </p><p>was temporarily staged on-site and was recycled to build roadways at the FM 812 Landfill </p><p>facility. </p><p>Sanitary wastewater from an office restroom and sinks in the office building discharges to an on-</p><p>site septic system. The system consists of a 1,000-gallon, 2-compartment tank and two leach </p><p>fields. The two leach fields cover a combined area of 1,640 square feet (ft2) and are located </p><p>approximately 15 feet to the west of the office building. The septic system is permitted through </p><p>Travis County. WESTON reviewed documents provided by Travis County dating from 1990 </p><p>and 1997. According to the Austin-Travis County Health Department documents from April </p><p>1997, the system has a history of failure. Modifications were made (low-flow toilets, </p><p>deverting stormwater from the drain field, etc.) to correct the capacity issues reported by Travis </p><p>County Health Department. According to COA, the septic system is currently operational, and </p><p>the system has no current reported issues related to system capacity. </p><p>FM 812 Landfill Background </p><p>The FM 812 Landfill began accepting waste in the 1960s. The landfill was designated as a Type </p><p>I facility and accepted municipal solid waste (MSW) until 1999 when Austin Bergstrom </p><p>International Airport opened to the north. At that time, the landfills designation and operation </p><p>was changed to a Type IV landfill, at which time it ceased accepting putrescible wastes that </p><p>could attract birds to the facility. The landfill continued to accept only brush and construction </p><p>debris. An approximately 1-acre portion of Cell E, located immediately adjacent to the north of </p><p>the southern parcel of the subject property, was used at that time by the COA Electric Utility </p></li><li><p>Weston Solutions, Inc. Phase I Environmental Site Assessment Two Parcels of a Property Located at the City of Austin FM 812 Landfill, Austin, TX </p><p>SUMMARY </p><p> H:\City Of Austin - Public Works Dept (06141)\2010-2012 Environmental Rotation List\06141.045.001 FM 812 Landfill ESA\19.0 Final Deliverables\Final Phase I ESA_03.14.13.Doc </p><p>S-3 </p><p>Department to dispose of friable asbestos-containing material (ACM). According to the site </p><p>contact, closure procedures for the FM 812 Landfill were started approximately 3 years ago, and </p><p>all cells of the landfill have been capped. A review of files obtained from the Texas Commission </p><p>on Environmental Quality (TCEQ) confirmed that construction activities for final closure of the </p><p>landfill began in October 2009 and were completed in September 2010. However, final closure </p><p>of the FM 812 Landfill has not been granted by the TCEQ due to recent drought conditions </p><p>exacerbating efforts to establish vegetative cover on the clay caps. The clay cap construction has </p><p>been certified and accepted by the TCEQ. </p><p>According to the COA site contact, the subject property parcels have not been used for the </p><p>disposal of waste. This is generally supported by independent lines of evidence, including </p><p>historical aerial photographs, satellite imagery, and a September 2012 site visit. No signs of </p><p>waste disposal were observed by WESTON on the subject property parcels during the site visit. </p><p>In the early 1990s, a failure of the northern landfill slope resulted in a slide of clay into Onion </p><p>Creek, prompting several subsurface investigations to examine leachate seeps and slope issues. </p><p>As a result of these investigations, the slope was re-graded and stabilized in 1994. Remediation </p><p>of the northern portion of the FM 812 landfill was initiated to eliminate surface seeps of leachate </p><p>into Onion Creek, which is located north of the landfill property. WESTON reviewed all </p><p>available information in the TCEQ file room, and no additional information regarding the </p><p>location of the slope failure beyond that provided by COA and Travis County was found during </p><p>the file review. Based on documentation provided by the COA showing the location of the slope </p><p>failure and subsequent remediation projects, the slope failure did not affect the two parcels that </p><p>make up the subject property of this report. </p><p>In 1998, the COA installed a gas collection control system (GCCS) to address methane gas </p><p>migration issues. According to the COA site contact, the GCCS was activated in approximately </p><p>2003. The GCCS is not located on either parcel of the subject property; however, gas monitoring </p><p>points exist on the subject property parcels. </p><p>Groundwater monitoring for the landfill property began in 1984 and 1985 per the requirements </p><p>of the Texas Water Commission (TWC), predecessor to the TCEQ. Groundwater sampling is </p><p>conducted on a semi-annual basis as required by the landfill permit. The groundwater </p></li><li><p>Weston Solutions, Inc. Phase I Environmental Site Assessment Two Parcels of a Property Located at the City of Austin FM 812 Landfill, Austin, TX </p><p>SUMMARY </p><p> H:\City Of Austin - Public Works Dept (06141)\2010-2012 Environmental Rotation List\06141.045.001 FM 812 Landfill ESA\19.0 Final Deliverables\Final Phase I ESA_03.14.13.Doc </p><p>S-4 </p><p>monitoring requirements include background monitoring, detection monitoring, and assessment </p><p>monitoring programs. Based on the approximate boundaries for the subject property parcels </p><p>provided by COA, groundwater monitoring wells (MW) and gas probes (GP) that fall on the </p><p>subject property parcels include the following: </p><p> GP-1, GP-2, GP-3, GP-12, GP-13, and GP-14 on the southern parcel. MW-1, MW-2, and MW-20 on the southern parcel. GP-7 and GP-8 on the northeastern parcel. MW-6, MW-13, and MW-21 on the northeastern parcel. </p><p>This assessment has revealed no evidence of recognized environmental conditions (RECs) in </p><p>connection with the property, except for the followi...</p></li></ul>

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