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1930 Jade Lane - Ltr 2010-08-20 re MPCA1 August 20, 2010 Mr. Andy Wilhoit At Home Apartments 616 Lincoln Avenue St. Paul, MN 55102 RE: Petroleum Tank Release Site File Closure Site: Jade Lane Estates, 1930 Jade Lane, Eagan, MN 55112 Site ID #: LEAK 00017942 Dear Mr. Wilhoit: S r . ����cpp egg"� $ r1 dFm4E�� on �d EtrE�`cJ �IL�+'A���.�� I ✓ e y( 'ti�A 61 520 Lafayette Road North I St. Paul, MN 55155-4194 I 651- 296 -6300 1 800 -657 -3864 I 651- 282 -5332 TTY J www.pca.state.mn.us Nl c We are pleased to let you know that the Minnesota Pollution Control Agency (MPCA) staff has determined that your investigation and /or cleanup has adequately addressed the petroleum tank release at the site listed above. Based on the information provided, the MPCA staff has closed the release site file. Closure of the file means that the MPCA staff does not require any additional investigation and/or cleanup work at this time or in the foreseeable future. Please be aware that file closure does not necessarily mean that all petroleum contamination has been removed from this site. However, the MPCA staff has concluded that any remaining contamination, if present, does not appear to pose a threat to public health or the environment under current conditions. The MPCA reserves the right to reopen this file and to require additional investigation and/or cleanup work if new information, changing regulatory requirements or changed land use iiiaic additional work necessary. If you or other parties discover additional contamination (either petroleum or nonpetroleum) that was not previously reported to the MPCA, Minnesota law requires that the MPCA be immediately notified. You should understand that this letter does not release any party from liability for the petroleum contamination under Minn Stat. ch. 115C or any other applicable state or federal law. In addition, this letter does not release any party from liability for nonpetroleum contamination, if present, under Minn. Stat. ch. 115B, the Minnesota Superfund Law. Please note that as a result of performing the requested work you may be eligible to apply to the Petroleum Tank Release Compensation Fund (Petrofund) for partial reimbursement of the costs you have incurred in investigating and cleaning up this petroleum tank release. The Petrofund is administered by the Petroleum Tank Release Compensation Board (Petro Board) and the Minnesota Department of Commerce. To learn more about who is eligible for reimbursement, the type of work that is eligible for reimbursement, and the amount of reimbursement available, please contact Petrofund staff at 651 -297 -1119 or 1- 800 - 638 -0418. St. Paul I Brainerd I Detroit Lakes 1 Duluth I Mankato 1 Marshall I Rochester I Willmar I Printed on 100% post- consumer recycled paper Mr. Andy Wilhoit Page 2 If future development of this property or the surrounding area is planned, it should be assumed that petroleum contamination may still be present. If petroleum contamination is encountered during future development work, the MPCA staff should be notified immediately. For specific information regarding petroleum contamination that may remain at this leak site, please call the Petroleum Remediation Program File Request Program at 651- 757 -2309 or 651 -757- 2799. The MPCA fact sheet Request to Bill for Services Performed must be completed prior to arranging a time for file review. Thank you for your response to this petroleum tank release and for your cooperation with the MPCA to protect public health and the environment. If you have any questions regarding this letter, please call me at 651- 757 -2838. If you are calling long distance, you may reach the MPCA by calling 800 -657- 3 864. Sincerely, Gary Zarling Project Manager Petroleum Remediation Section Remediation Division GWZ:Is cc: Mir% Peeen, Gib Clrk,;Egan Michael Scott, Fire Chief, Eagan George Kinney, Dakota County Solid Waste Officer Kevin Pierson, The Javelin Group, Inc., Eden Prairie Minnesota Department of Commerce Petrofund Staff A Special Inspection Final Report Unisys Generator Pads 3199 Pilot Knob Road Eagan, Minnesota Prepared for Hunt Electric Project BL- 09- 04105A August 27, 2010 Braun Intertec Corporation 15104 'Mu/Jiro attces7 EAGAN REVIEW ED IBy1 -90 DATE. a .Dv I D BUILDING INSP CTIONS DIVISION August 27, 2010 Mr. Pat Nichols Hunt Electric 2300 Territorial Road St. Paul, MN 55114 Re: Special Inspection Procedural and Final Report Submittal Unisys Generator Pads 3199 Pilot Knob Road Eagan, Minnesota Dear Mr. Nichols: Please find attached to this procedural report the Special Inspection Final Report for the Unisys Generator Pads project, and the supporting Special Inspection Daily Reports for your review and records. Special Inspection and Testing Procedures The special inspection services were provided by International Code Council (ICC) certified special inspectors in accordance with the requirements of Chapter 17 of the International Building Code (IBC), the Special Inspection and Testing Schedule and /or the project plans and specifications. The purpose of special inspections is to provide a review of the contractor's work designated by the project structural engineer as needing special inspection under the guidelines of the IBC to determine compliance with the approved construction documents. The special inspector doesn't have the responsibility or authority to, nor is it the intent of special inspections to have them, judge, or modify the construction documents. Only the structural engineer of record can do this. As the special inspections were completed, a Special Inspection Daily Report was prepared to summarize the results of our inspections and testing. A copy of this report was provided to the contractor's site representative for their review and records. As part of this report, items needing correction or discrepancies observed from the approved construction documents were noted. Plans and Specifications Braun Intertec Corporation 1 1001 Fi iriipshire Avenue S Minneapolis, MN 55438 Project BL- 09- 04105A Phone: 952.995.2000 Fax: 952995.2020 Web: brauninterrec:r.,,m The provided plans and specifications or the plans available at the site were used for our inspections. s Providing engineering and environmental solutions since 1957 Hunt Electric Project BL- 09- 04105A August 27, 2010 Page 2 Summary of Special Inspections and Material Observations and Tests Soil Evaluation and Testing Braun Intertec completed a Geotechnical Evaluation for this project and the results were contained in the report dated October 1, 2009. Based on the results of the evaluation, footings could be designed for bearing pressures of up to 4000 psf. Soils exposed at structure subgrade elevations and in excavations were visually evaluated, while those below subgrade elevations and excavation bottoms were evaluated using hand auger borings. These tasks were performed to determine if the observed and tested soils were consistent with those encountered by the geotechnical borings performed for the project, and suitable for support of the design structural loads. The hand auger borings were drilled with a 11/2- inch - diameter hand auger. The borings were advanced in 2- to 4 -inch increments to depths of 1 to 2 feet below subgrade elevations or excavation bottoms. The auger was then withdrawn from the borehole to obtain cuttings. The soils encountered in the borings were classified in general accordance with ASTM D 2488, "Description and Identification of Soils (Visual /Manual Procedures)." Preliminary estimates of soil . consistency and density were also evaluated based on resistance to penetration of the hand auger, and the turning resistance. Concrete Reinforcement We initially reviewed the reinforcement and dowel requirements on the project structural drawings and shop drawings, if available. Information reviewed included bar size, bar length, bar spacing, bar location, splice lengths and dowel placement. This information was then used to determine in the inplace reinforcement was placed in accordance with the requirements of the project plans and specifications. We also noted if the inplace reinforcement was free of rust, scale and soil. Concrete Placement Observations Concrete placement observations were performed to monitor the procedures being used by the contractor and to determine if they were consistent with typical industry standards. Fresh Concrete Testing Routine tests to determine the plastic concrete's slump, temperature and air content were done during each pour. In addition, concrete cylinders were cast at rates specified in the project specifications to evaluate the concrete's compressive strength. Concrete Compressive Strength Testing The cast concrete cylinders were temporarily stored at the site and then returned to our laboratory for moist curing and testing. The results of the concrete compressive strength testing were forwarded to the interested parties under a separate cover as they became available. Visual Examination of Field Welds Visual examination of the field welds was conducted in accordance with American Welding Society (AWS) D1.1 -2008, Figure 5.4 and Table 6.1 requirements and the requirements of the project plans and specifications. BRAUN INTERTEC General In performing its services, Braun Intertec used that degree of care and skill ordinarily exercised under similar circumstances by reputable members of its profession currently practicing in the same locality. No warranty, express or implied, is made. Thank you for the opportunity to provide the special inspection and testing services for this project. After review of the attached Special Inspection Final Report, if you have any questions or require additional information, please call Jim Craig at 952.995.2372. Sincerely, BRAUN INTERTEC CORPORATION es J. Cr g, Jr., Ja ay A. Huber, PE Vice President — Principal Engineer Attachment: Special Inspection Final Report SpeclnspFinalRpt Hunt Electric Project Bt- 09 -04105A August 27, 2010 Page 3 BRAUN INTERTEC Soils The required testing in the field and laboratory has been completed. The compaction testing done during placement of backfill and additional required fill indicated the procedures used by the contractor were adequate to compact the backfill and fill, and meet the project requirements. Observations and testing of the structure subgrades and excavation bottoms indicated that the exposed soils were consistent with those encountered by the geotechnical borings performed for this project, and were capable of supporting a net allowable bearing pressure of up to 4000 pounds per square foot. There are no outstanding or unresolved soils - related issues. Concrete The required testing in the field and in the laboratory has been completed. The results have been forwarded under separate cover. The compressive strength testing indicates the concrete placed has met the project requirements. The placement procedures used were judged to have met the project requirements. There are no outstanding or unresolved concrete - related issues. Reinforcing Steel The reinforcement placement detailed in the attached Special Inspection Daily Reports was observed according to the requirements of the project plans and specifications. There are no outstanding or unresolved reinforcing steel- related issues. Structural Field Welding The welded connections detailed in the attached Special Inspection Daily Reports were observed in general accordance with the requirements of the project plans and specifications. There are currently no outstanding or unresolved structural welding- related issues. Special Inspection Final Report City of: Eagan Date: August 27,2010 Project: Unisys Generator Pads 3199 Pilot Knob Road Eagan, Minnesota Braun Intertec Project: BL- 09- 04105A Braun Intertec Corporation 11001 Flarpthire Avenue 9 Minneopoh , MN 55438 Attention: Mr. Pat Nichols Phone: 952.995.2000 Fox 952.995.2020 Web: brauninlertec,r_oiti In accordance with Section 1704 of the International Building Code and the agreed upon scope of services, the required special inspections and testing has been provided for the following items: Page 1 of 2 B LI OM Providin engineering and environmental soh/ yet wilt Conclusion Inspecting Firm: Braun Intertec Corporation I hereby certify that this plan, specification or report was prepared by me or under my direct supervision and that I am a duly Licensed Professional Engineer under the laws of the State of Minnesota. .1 es J. Cr.= g, Jr., PE enior Engineer License Number: 12694 August 27, 2010 Attachments: Special Inspection Daily Reports Response to RFI #6 Hunt Electric Project BL -09- 04105A August 27, 2010 Page 2 Based upon the inspections performed, the testing completed and the attached. Special Inspection Daily Reports, it is our professional judgment that, to the best of our knowledge, the inspected work was performed and completed in accordance with the approved plans, specifications, and applicable workmanship provisions of the International Building Code. • LICENSED PRE NGIN ER :� cn 1 269 4 •' 0 . , 4r' • • ... • •.. �`'� +� .,, • O • "ill F D M111' " BRAUN 1NTERTEC