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GHD License Agreement for Site Assessment_949 Kerper Blvd Copyrighted March 19, 2018 City of Dubuque Consent Items # 17. ITEM TITLE: GHD LicenseAgreementforSiteAssessment SUMMARY: City Manager recommending approval of a License Agreement with GDH Services Inc, on behalf of MidAmerican Energy Company in the area of 949 Kerper Blvd. and the former Peoples Natural Gas site. RESOLUTION Authorizing License Agreement for Site Assessment Between the city of Dubuque and GHD to Install Eight Water Level Transducers and Three Silty Sand Aquifer Monitoring Wells on Public Parcel and Public Right- Of-Way in the Area of 949 Kerper Boulevard SUGGESTED DISPOSITION: Suggested Disposition: Receive and File; Adopt Resolution(s) ATTACHMENTS: Description Type GDH Site Assessment 949 Kerper-NNM Memo City Manager Memo Staff Memo Staff Memo Resolution Resolutions Agreement Supporting Documentation THE CITY OF Dubuque � AIFA�erlwGh UB E '�� III► Masterpiece on the Mississippi Z°°'�w'2 7A13 2017 TO: The Honorable Mayor and City Council Members FROM: Michael C. Van Milligen, City Manager SUBJECT: GHD Site Assessment 949 Kerper Blvd. DATE: March 13, 2018 Project Manager Steve Brown recommends City Council approval of a License Agreement with GDH Services Inc, on behalf of MidAmerican Energy Company, to install eight water level data loggers and three new silty sand aquifer monitoring wells in the area of 949 Kerper Blvd. and the former Peoples Natural Gas site. I concur with the recommendation and respectfully request Mayor and City Council approval. �� Mic ael C. Van Milligen �� MCVM:jh Attachment cc: Crenna Brumwell, City Attorney Teri Goodmann, Assistant City Manager Cori Burbach, Assistant City Manager Steve Brown, Project Manager THE C1TY OF Dubuque � D v L E All•Anerip Ciry r�. i'i � � Masterpiece on the Mississippi z°°'�Z°'Z zot;�Zn,� TO: Michael C. Van Milligen, City Manage�, FROM: Steve Brown, Project Manager DATE: March 13, 2018 RE: GHD Site Assessment 949 Kerper Blvd. INTRODUCTION This is in response to a request from GHD, Des Moines, lowa, on behalf of MidAmerican Energy Company, to install eight water level data loggers and three new silty sand aquifer monitoring wells in the area of 949 Kerper Blvd. and the former Peoples Natural Gas site. DISCUSSION In response to the US Environmental Protection Agency, Region VII request, additional testing and monitoring is required at and around the former Peoples Natural Gas site regarding potential future groundwater contribution to surface water and sediment in Dove Harbor to evaluate possible impact on ecological receptors. Three additional silty sand aquifer monitoring wells are proposed to be installed approximately 3-5 feet from existing extraction wells. Groundwater elevations will also be monitored using data logging pressure reducers, one in Dove Harbor (location to yet be determined) and the seven inside existing monitoring wells. All as shown on Figure 1 of the attached. RECOMMENDATION All appropriate documents, including the City's License Agreement for Site Assessment, map of proposed work, Certificate of Insurance have been submitted by GHD and have been approved by City staff. BUDGET IMPACT This request does not have any budget impact for the City. ACTION TO BE TAKEN The request is for your review and processing to the City Council for their execution of the License Agreement for additional monitoring wells and water level data loggers for compliance with USEPA request at the former Peoples Natural Gas Site, 949 Kerper Blvd. cc: Gus Psihoyos, City Engineer Crenna Brumwell, City Attorney Jane Smith, EAff F:\JANE SMITH\R0IMROWENCR\WELLS Soil Borings also see Archive\2018\GHD MidAmerican 949 Kerper RESOLUTION NO. 64-18 AUTHORIZING LICENSE AGREEMENT FOR SITE ASSESSMENT BETWEEN THE CITY OF DUBUQUE AND GHD TO INSTALL EIGHT WATER LEVEL TRANSDUCERS AND THREE SILTY SAND AQUIFER MONITORING WELLS ON PUBLIC PARCEL AND PUBLIC RIGHT-OF-WAY IN THE AREA OF 949 KERPER BOULEVARD Whereas, GHD, on behalf of MidAmerican Energy Company, has requested permission from the City of Dubuque to install eight additional water level transducers and three silty sand aquifer monitoring wells on City property and right-of-way west of 949 Kerper Boulevard in Dubuque, Iowa, for the purpose of evaluating impacted groundwater that may be associated with the former Peoples Natural Gas (PGN) site; and Whereas, the License Agreement for Site Assessment has been prepared outlining the responsibilities of GHD in the installation of a monitor wells and transducers and in the performance of proposed work on public right-of-way; and Whereas, the performance of the activities of GHD will be at no cost or expense to the City, and all work will be performed by GHD, or its employees, agents or subcontractors; and Whereas, it is the desire of the City Council to approve said License Agreement for Site Assessment for the installation of monitoring well and soil boring in the public right- of-way as requested. NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF DUBUQUE, IOWA: Section 1. The License Agreement for Site Assessment be and the same is hereby approved. Section 2. That the Mayor be and is hereby authorized to execute said License Agreement for and on behalf of the City Council. Passed, approved and adopted this 19th day of March 018. Attest: Kevi Firnstahl,City Clerk F:\JANE SMITH\ROW\ROWENCR\WELLS Soil Borings also see Archive\2018\GHD MidAmerican 949 Kerper Roy D. DOI, Mayor � � February 2, 2018 Reference No. 11115535 Ms. Jane Smith City of Dubuque Engineering Department 50 W. 13�'' Street Dubuque, IA 52001 Dear Ms. Smith: RE: License Agreement for Site Assessment Peoples Natural Gas Site 925 Kerper Boulevard, Dubuque, lowa As we have discussed, additional activities related to the Peoples Natural Gas site are proposed on behalf of MidAmerican Energy Company. Enclosed, please find a signed copy of the License Agreement for Site Assessment(License Agreement); GHD's Certificate of Insurance; and the January 24, 2018 Work Plan for Additional Evaluation Activities which describes the proposed work. We propose to install the water level data loggers and new monitoring welis immediately following the City of Dubuque's approval of the License Agreement and issuance of the necessary permits. We appreciate your assistance on completing the necessary permitting to allow this project to proceed. If you have questions or need additional information, please contact me at 515-414-3935. Sincerely, GHD ('�� Kevin G. Armstrong, C.P.G., P.M.P. CO/hs/1 Attachments License Agreement for Site Assessment Certificate of Insurance Work Plan for Additional Evaluation Activities cc: Jenny Coughlin, MidAmerican (electronic copy only) Steve Sampson Brown, City of Dubuque(electronic copy only) Candace Eudaley-Loebach, City of Dubuque (electronic copy only) GHa 1 i�28 AErrora A�ersue Qas Mai�as lowa 5Q322 79tl5 LlSA T:�i.i Atd�833 FS1S 414 a9da W www.ghd.cvm Attachment A License Agreement for Site Assessment LICEIVSF, AGREEMENT FOI2 SI7'E ASSH SSMENT TF�IS AGREF.,MENT is entered by and between GHD_Services Inc._f consultant for MidAmerican Ener�:�pany) (Licensee) and the Citv of Dubuque, Iowa �itv), tllis 13t�' da�of March 201 H. WHEREAS, Licensee has entered into a contract with MidAmerican Ener�v Company for envii•onmental seivices related to potential contamination associated with the for•mer Peoples Natui�al Gas site located_at 949 Keiper Boulevard in the Citv of Dubuque (Project Properties); and WHEREAS, pursuant to said contract, Licensee will assess and investigate and conduct remedial activities on said site to address the pt•esence of contamination by taking soil and water samples; installing groundwater monitoring and extraction wells; and maintaining a hydraulic containment remedial system, all in contemplation of the preparation and submission of r•epoc-ts to tlie United States Environmental Pi•otection Agency and Iowa Depat�tment of Natura( Resources by the Licensee; and WHEREAS, the investigation of said site will in many instances involve the activities on adjacent City-owned proper-ty, access to Dove Harbor, or City-owned street or alley i•ight-of way, (City Property oc tlie City Properties); and WI�EREAS, the Licensee's perfoi-�nance of the Activities (defined below) herein provicied will be at no cost or expense to City and it is recognized that all work will be pert��rmed by Licensee or its emp(oyees, agents, or subcontt•actors; and W}�EREAS, it is the desire anci intention of I,icensee and City to make tliis mutual agreement with respect to access to City Properties, including access to Dove Harbor, anci with respect to tile Activities to be conducted upon the saici City Properties. NOW, THEREFnRE, fot• and in consideration of the mutual covenants and undertakings hereinafter made by City and Licensee, the said parties do hereby agree as follows: 1. City hereby gt•ants to Licensee, its contractors, subcontractors, and their employces aiid a�ents, a tempo►•aiy license to enter upon City Properties adjacent to Project Properties, including access to Dove Harboc, far the perfol•mance of the assessment and investigation activities described liei•ein belo�v (the Activities), and the right to enter shall �ontinue in eflect 11t1t1I UCCClllbt>1' 31, 2028. If at that time Licensee has not completed all Activities, City may, through its City Council, cxtend this l�icense Agreement for such additional period or periods of time to r•easonably complet�e the Activities. The ex�irati�m of this I,icc;nse not�vithstanding, Licensee sh�ll rctain its ohligati�ms witl� res��ect to thc maintcuancc and rcnioval of numit��►•ing ��ells until such timc �is those ��bli�ati��ns are s��iislic�j, ��11 s�� r��vicl�cl i�� Pa�•a�r►•��h S herc�c�f�. 2. City repj•esents and warrants that it owns and is lawfully possessed of all streets and alley rights-of-way adjacent to the Project Properties and that it has full authority to grant and enter into this License Agreement, provided, however, that Licensee shall be obligated to obtain permission from the Iowa Department of Transportation before conducting any of the Activities hereafter enumerated upon State highway right-of-way within the City of Dubuque and any City lessees on leased propei�ties prior to beginning any activities. 3. Lic.ensee agrees to notify City, at the time it picks up Excavation Permits for particular Project Properties, of its intent to commence the Activities upon specific City Properties. Licensee agrees not to conduct soil borings oi• to install groundwater monitoring wells upon the paved portion of any street or in any street or highway median, without special written authorization from City's Public Works Director. Licensee agrees to notify at least five (5) business days in advance the Jule Operations Training Center (JOTC) point of contact of any activities on the JOTC site. As to privately owned "underground facilities" located upon City Property, Licensee agrees to follow the procedures provided in Chapter 480 of the Iowa Code regardin� obtaining locator service prior to the commencement of excavation or drilling activities, and that its responsibility and liability for damage to such facilities shall be determined in accordance with the provisions of that Chapter. As to City owned or operated "underground facilities", (including but not liinited to sewer, water, electric, electronic communications, and traffic control), City agrees that appropr•iate City departments or agencies will provide locator services for its underground facilities as required by Chapter 480 of the Iowa Code. Licensee, its agents, employees, contractot•s or subcontractois, agrees that its responsibility and liahility for dama�e to underground facilities owned or operated by City, shall be deteirnined in accor•dance with the provisions of Chapter 480 of the Iowa Code. 4. Within a reasonable time after completion of each step of any of the Activities on City Properties, Licensee shall cause any tools, equipment, inaterials except for any �roundwater monitoi•ing wells placed hereon to be reinoved, and shall restore said Propec•ties to the condition they were in prioc to convnencement of said Activities. The obligation to remove and properly abandon eacl� pa��ticular groundwater monitorin� well upon City Properties shall remain the responsibility of Licensee until each such monitoring well is propecly removed and abancioned as required by applicablc state oi• fedecal la�v or regulation, as evidenced by a ��ell closure report issued by a certitied well driller. Alternatively, the obligation of Licensee with eegard to particular monitoring wells shall be deemed discharged upon City's I'ublic Works Dit•ector's receipt, acceptance, and execution of an agreement, in tonn acceptable to City's Legal Uepartn�ent, executed by the owner of tlie adjacent Project P►•operty, pursuant to which the said property ownei• agrees to accept responsibility for the operation and maintenance of said monitoring well and for its removal and abandonment as above provided. Licensee agrees that City may r•etain its License A�t•eement for Site Assessment, hold harmless, and maintain on file cectiticates of liability insui•ance until its obligation to remove monitorin� wells is deeined discharged as herein provided. Licensee agrees that unless deemed discharged it will promptly remove and properly abandon any monitorin�; well located upon City Prope��ty when it is nc�tified by City that the City Pr�perty upon which the well is located is required for municipal purposes, includin� but not limited to street, sewer, traffic control, or water utility construction or repair. City agrees to review the proposed location of monitorin� wel(s, if provided in advance of theic installation, and to advise Licensee if a proposed monitoring well location will conflict with planned constiuction activities. City's failurc to advise of such conflicts shall not excuse Lic;ensee of its obligation to reinove rnonit�ring wells to accommodate such construction activities by City. The parties further agcee that unless Licensee is deemed dischargeci, then in the event Licensee fails to properly maintain any monitoring well or the area immediately adjacent thereto, or fails to reinove a monitoring well afte�• being advised that the City Propei�ty upon which it is locateci is required for municipal purposes, City may either (a) deny Licensee access thereto, or (b) declare the said monitorin� well a nuisance, cause same to be removed, and assess the costs of abatement against the Licensee, or against the Project Prop�;rty or Properties for whose benetit the well was installed, all as provided in Iowa C�de Section 364.12. 5. This Agreement is intended and shall be construed only �s a temporary and f'reely re��ocable license tc� enter and conduct the Acti��ities upon City Properlies and not as a grant of ease�nent or any other interest therein. 6. This A�reement shall be bindi��g upon the ��acties heret�o �nd �ipon their• respective successo�s, representatives, hei�s, and assi�;ns. Tliis 1�C�t;117CT11 Sjlall 1�S0 hC h111(�111� Ll�)OIl 1�1 CLIt'1'�Ilt i�11C� {UtUCf; 1I1V1tCCS O11 ��lty Pro��erties, if any. 7. Licensee �igcees to defend, inclemnify, �nd hold h�rmless C�ity, its ol7iccrs, �l�?Ci1tS, 'cl[1(I �I11�lIUyCCti �l'0111 anci R�T3111St S�� III�IlI1Cl' (lt t1Ct1011ti, li�lbilities, C;�i11.I11S� l'iIUSCS (1� ilCtl(111, SUItS, (jt;�l(S, ill'(�(11111tS, �OSSCti� (�illllil�?l`S, 811({ uttorilcys' fees includi►i� but itot liii�itcci t�� E�r��crty clania�;e or hociily injury, incluciin� death at Rllylllllt; 1'CSItI�IIl�; tI1Ci'Cfl'011l, incurrc<1 by ("ity, itti ofticei•s, agents, or employees, to the extent the same is caused by Licensee or its officers, agents, employees, contj•actors, or subcontractors, or by any third party, arising out of the perfoi�rnance of the Activities upon City Property by Licensee, or arising out of the existence, operation, maintenance, or removal of monitor•ing wells on City Prope►-ty by Licensee, or arising out of or occasioned by Licensee's failure to perform any act as herein required. In no event shall Licensee be liable for any indirect, incidental, special or consequential damages whatsoever (including but not liinited to lost profits or interruption of business) arising out of or related to the Activities, even if advised of the possibility of such damages. 8. Licensee shall purchase and n�aintain insurance as set forth in the attached Insurance Schedule throu�h the duration of this Agreement. 9. Upon request by the City, Licensee agrees to provide to the City, within 10 days of request, copies of: (a) all reports, including raw sampling data, which it has therefore made or shall thereafter make to the Board, IDNR, EPA, or any other governmental agency; and (b) all correspondence, including further orders or directives, which it received from the Board, IDNR, EPA,or any other governmental agency; relating to assessment or remediation of any particular Project Property or to adjacent City Properties. 10. Notices, reports, or correspondence required to be given or sent by this Agreement shall be directed to the following: If to the City: Engineering Department City of Dubuque 50 W. 13t" Steeet Dubuque, IA 52001-4864 (563) 589-4270 Fax: (563) 589-4205 If to the Licensee: Kevin Ai7nstrong GHD 11228 Aurora Avenue Des Moines, IA 50322 Phone: 515-414-3935 Fax: 515-414-3943 Such notices shall be delivered or sent by mail. Notices shall be deemed �iven�vhen placed in the mail, postlge paid. 1l. The undersigned ��arrant that they have full power and authority to execute and deliver tl�is Agreement. City further warrants tliat it has full power and authority to bind the current and future invitees on City Properties. 12. Iowa One -Call registration is/may be required by the City of Dubuque with submittal of registration documentation by the Licensee. IN WITNESS HEREOF, GHD (consultant for MidAmerican Energy Company), and City have executed two (2) original copies of this Agreement on the dates specified immediately adjacent to their respective signatures. GHD Services Inc. CITY OF DUBUQUE, IOWA Rev. BL 5/06 7/2012 . Fimstahl, City Clerk Attachment B Certificate of Insurance . ^ Page 1 of 2 A�RLD`� CERTIFICATE OF LIABILITY INSURANCE DO1/31/2018Y) THIS CERTIFICATE IS ISSUED AS A MATTER OF INFORMATION ONLY AND CONFERS NO RIGHTS UPON THE CERTIFICATE HOLDER. THIS CERTIFICATE DOES NOT AFFIRMATIVELY OR NEGATIVELY AMEND, EXTEND OR ALTER THE COVERAGE AFFORDED BY THE POLICIES BELOW. THIS CERTIFICATE OF INSURANCE DOES NOT CONSTiTUTE A CONTRACT BETWEEN THE ISSUING INSURER(S), AUTHORIZED REPRESENTATIVE OR PRODUCER,AND THE CERTIFICATE HOLDER. IMPORTANT: If the certificate holder is an ADDITIONAL INSURED,the policy(ies)must have ADDITIONAL INSURED provisions or be endorsed. If SUBROGATION IS WAIVED, subject to the terms and conditions of the policy, certain policies may require an endorsement. A statement on this ce�tificate does not confer rights to the certificate holder in lieu of such endorsement(s). PRODUCER CONTACT NAME: Willis of Massachusetts, Inc. - c/o 26 Century Blvd PHONE 1-877-995-7378 � FAX 1-888-467-2378 GAl�.No,Ext): __(A/C,No�: E-MAIL certificates@willis.com P.O. Box 305191 ADDRESS: Nashville, TN 372305191 USA INSURER(S)AFFORDINGCOVERAGE NAIC# INSURERA: Allied World Assurance Company (U.S.) Inc. 19989 INSURED INSURERB: Zurich American Insurance Company 16535 GHD Servir.es Inc. 2055 Niagara Falls Blvd., Suxte 3 INSURERC: AIG Specialty Insurance Company 26883 Niagara Falls, NY 19304 INSURERD: Allied World National Assurance Company 10690 INSURER E: INSURER F: COVERAGES CERTIFICATE NUMBER:ws181329 REVISION NUMBER: THIS IS TO CERTIFY THAT THE POLICIES OF INSURf�NCE LISTED BELOW HAVE BEEN ISSUED TO THE INSURED NAMED ABOVE FOR THE POLICY PERIOD INDICATED. NOTWITHSTANDING ANY REQUIREMENT, TERM OR CONDITION OF ANY CONTRACT OR UTHER DOCUMENT WITH RESPECT TO WHICH THIS CERTIFICATE MAY BE ISSUED OR MAY PERTAIN, THE WSURANCE AFFORDED BY THE POLICIES DESCRIBED HEREIN IS SUBJECT TO ALL THE TERMS. EXCLUSIONS AND CONDITIONS OF SUCH POLIqES.LIMITS SHQWN MAY HAVE BFEN REDUCED BY PAID CLAIMS. INSR �ADDL SUBR POLICY EFF POLICY EXP LTR TYPE OF INSURANCE POLICY NUMBER I MM/DDlYYYY MM/DDIYYYY LIMITS X COMMERCIAL GENERAL LIABILITY � EACH OCCURRENCE g 1,000,000 �DAMAG�T(�ENTED 1,000,000 __ _, J CLAIMS-MADE �� OCCUR PREMISES.{Ea.occurrence� � A _ _ _ MED EXP(Any one person� � 25,000 Y 0310-9497 12/O1/2017 12/O1/2018 PERSONAL&ADVIfJJURY $ 1,000,000 IGEN'LAGGF2EGATELIMI'fAPPLIESPER GENERALAGGREGATE $ 2,000,000 _ I POLICY f x 1 ECT `. .f��nC � � �PRODUCTS-COMPlOP AGG � 2,000,000 �'OTHER. � � AUTOMOBILE LIABILITY 'I I COMBINED SINGLE LI611T $ 1,000,000 ,!Ea accidentl x ANY AU'o �I �, BODILY INJURY�Per person) � $ g -�"- OWNEa SCHEDULFD y �, i gpp 3757423-02 07/O1/2017 07/Ol/2018 gOUILYINJURY Peraccidenq� $ _ AUTOS ONLY �AUTOS �i ( � HIRED NOfv-OWNED I � PROPERTY DAMAGE x l�SYTOS ONV.Y x AUTOS ONLY (P2f eCddeflt) `� -"Coll Ded: 500 Comp Ded: 250 X X I Aired Physical Damag $ 100000 UMBRELLA LIAB X �n�CUR � I EACH OCCURRElvCE I$ 1,000,000 A -- �- X EXCESSLIAB I CLAIMS-MADE Y 0310-4498 12/O1/2017 12/O1/2018 AGGREGATE �$ 1,000,000 DED I I RETENTION$ I � $ WORKERS COMPENSATION x F'ER OTH- ANDEMPLOYERS'LIABILITY STATUTE I I ER B ANYPROPRIETORlPARTNER�EXECUTIVE YIN � E.L.EACHnCCIDENT $ 1,000,000 OFFICERlMEMBEREXCLUDED? No N/A WC 0380936-02 07/O1/2017 07/O1/2018'— — — — � (MandatoryinNH) E.L.DISEASE-EAEMF'LOYEE S 1,000,000 If yes,describe under 1,000,000 DESCRIP�fION OF OPERA310NS below � � E.L.DISEASE-POLICY LIMIT S C Pollution Liability Y CPO 14247915 12/O1/2017 12/O1/2018IEa.Occ:2,000,000/Agg: $9,000,000.00 � � I �..__„_. � . _ I DESCRIPTION OF OPERATIONS I LOCATIONS I VEHICLES (ACORD 101,Additional Remarks Schedule,may be attached if more space is reyuired) SEE ATTACHED CERTIFICATE HOLDER CANCELLATION SHOULD ANY OF THE A[30VE DESCRIBED POLICIES BE CANCELLED BEFORE THE EXPIRATION DATE THEREOF, NOTICE WILL BE DELIVERED IN ACCORDANCE WITH THE POLICY PROVISIONS. City o£ Dubuque AUTHORIZ.FDRF.PRF.SF.NTATIVE 925 Kerper Blvd � ! ��' ? �/r<I�fr�'�fi�Uc-t•,:3— Dubuque, IA 52001 ii U 1988-2015 ACORD CURPORATION. All rights reserved. ACORU 25(2016/03) The ACORD name and loyo are registered marks of ACORD :>>� t�'�: 15594859 �+ATr�{: SA8839 AGENCY CUSTOMER ID: LOC#: AC 0� ADDITIONAL REMARKS SCHEDULE Page 2 of Z ��. AGENCY NAMEDINSURED Willis of Massachusetts, Inc. Gxn Services inc. 2055 Niagara Falls Blvd., Suite 3 POLICY NUMBER Niaga=a Falls, NY 14309 See Page 1 CARRIER NAIC CODE See Page 1 See Page 1 EPFECTIVE DATE: See Page 1 ADDITIONAL REMARKS THIS ADDITIONAL REMARKS FORM IS A SCHEDULE TO ACORD FORM, FORM NUMBER: 25 FORM TITLE: Cettificate of Liability Insurance GHD Project no.:11115535, Right of Way Permit. The City of Dubuque, including all its elected and appointed officials, all its employees and volunteers, all its boards, commissions and/or authorities and their board members, employees and volunteers are included as Additional Insureds as respects to General Liability, Auto Liability, Umbrella/Excess Liability and Pollution Liability where required by contract or agreement. Excess Liability follows form over General Liability, Auto Liability and Employer's Liability. INSURER AFFORDING COVERAGE: Allied World National Assurance Company NAIC#: 10690 POLICY NUIIBER: 0311-1029-1N EFF DATE: O1/O1/2018 EXP DATE: 12/O1/2018 TYPE OF INSURANCE: LIMIT DESCRIPTIQN: LIMIT AMOUNT: Property See Below ADDITIONAL REMARKS: Limit of Loss: $20,000,000 Any One Limit Building: 2,801,000 Contents: 13,691,599 Special Risk Valuation: Replacement Cost COVERED PROPERTY SUB LIMITS: $1,000,000 Extra Expense $2,057,639 Leasehold Improvements $1,000,000 Accounts Receivable $1,919,600 Valuable Papers Included Electronic Data Processing $500,000 Transit $3,000,000 Contractor's Equipment $500,000 Rented Contractor's Equipment $5,590,000 Miscellaneous Equipment $7,000,000 Windstorm - Named & Unnamed $2,500,000 Builders Risk (COC) $20,000,000 Annual Earthquake Aggregate $2,000,000 Annual California Earthquake Aggregate DEDUCTIBI,ES: $5,000 All losses except, $50,000 Sewer Back-up $50,000 Flood $10,000 Theft/Break & Enter 3$ of TIV Earthquake applicable to U.S. Windstorm States Min$ 100,000 (Except California) 5$ of TIV Earthquake applicable to California Min$ 250,000 5$ of TIV Windstorm applicable to U.S. Windstorm States Min $ 100,000 48 Hour Business Interruption ACORD 101 (2008/01) O 2008 ACORU CURPURATIUN. All rights reserved. The ACORD riame and logo are reGistered marks of ACORD SR ID: 155y48S4 ��+�'�x. 5ff8839 �-F�N'�': W5181329 POLICY NUMBER: 0310-4497 COMMERCIAL GENERAL LIABILITY CG20101001 THIS ENDORSEMENT CHANGES THE POLICY. PLEASE READ IT CAREFULLY. ADDITIONAL INSURED - OWNERS, LESSEES OR CONTRACTORS - SCHEDULED PERSON OR ORGANIZATION This endorsement modifies insurance provided under the following: COMMERCIAL GENERAL LIABILITY COVERAGE PART SCHEDULE Name of Person or Organization: Where required by written contract (If no entry appears above, information required to complete this endorsement will be shown in the Declarations as applicable to this endorsement.) A. Section II — Who Is An Insured is amended to (1) All work, including materials, parts or include as an insured the person or organization equipment furnished in connection with shown in the Schedule, but only with respect to such work, on the project (other than liability arising out of your ongoing operations per- service, maintenance or repairs) to be formed for that insured. performed by or on behalf of the addi- B. With respect to the insurance afforded to these tional insured(s) at the site of the cov- additional insureds, the following exclusion is ered operations has been completed; added: or 2. Exclusions (2) That portion of"your work"out of which the injury or damag� arises has been This insurance does not apply to "bodily inju- put to its intended use by any person or ry"or"property damage" occurring after: organization other than another con- tractor or subcontractor engaged in performing operations for a principal as a part of the same project. CG 20 10 10 01 C�-�ISO Pm�erties, Inc., ?..000 Page 1 of 1 ❑ POLICY NUMBER: 0310-4497 COMMERCIAL GENERAL LIABILITY CG20371001 THIS ENDORSEMENT CHANGES THE POLICY. PLEASE READ IT CAREFULLY. ADDITIONAL INSURED - OWNERS, LESSEES OR CONTRACTORS - COMPLETED OPERATIONS This endorsement modifies insurance provided under the following: COMMERCIAL GENERAL LIABILITY COVERAGE PART SCHEDULE Name of Person or Organization: Where required by written contract Location And Description of Completed Operations: Where required by written contract Additional Premium: N/A (If no entry appears above, information required to complete this endorsement will be shown in the Declarations as applicable to this endorsement.) Section II — Who Is An Insured is amended to include as an insured the person or organization shown in the Schedule, but only with respect to liability arising out of"your work"at the location designated and described in the schedule of this endorsement performed for that insured and included in the "products-completed operations haz- ard". CG 20 37 10 01 �) ISO Properties, Inc., 20f)O Page 1 of 1 ❑ � Coverage Extension Endorsement �URI�H Policy No. Eff. Date of Pol. Exp. Date of Pol. Eff.Date of End. Producer No. Add'I.Prem Return Prem. BAP 3757423-02 7/1/2017 7/1/2018 7/1/2017 --- --- THIS ENDORSEMENT CHANGES THE POLICY. PLEASE READ IT CAREFULLY. This endorsement modifies insurance provided under the: Business Auto Coverage Form Motor Carrier Coverage Form A. Amended Who Is An Insured 1. The following is added to the Who Is An Insured Provision in Section II—Covered Autos Liability Coverage: The following are also "insureds": a. Any "employee" of yours is an "insured" while using a covered "auto" you don't own, hire or borrow for acts performed within the scope of employment by you. Any "employee" of yours is also an "insured" while operating an "auto" hired or rented under a contract or agreement in an "employee's" name, with your permission,while performing duties related to the conduct of your business. b. Anyone volunteering services to you is an "insured" while using a covered "auto" you don't own, hire or borrow to transport your clients or other persons in activities necessary to your business. c. Anyone else who furnishes an "auto"referenced in Paragraphs A.1.a. and A.1.b. in this endorsement. d. Where and to the extent permitted by law, any person(s)or organization(s)where required by written contract or written agreement with you executed prior to any "accident", including those person(s) or organization(s) directing your work pursuant to such written contract or written agreement with you, provided the "accidenY' arises out of operations governed by such contract or agreement and only up to the limits required in the written contract or written agreement, or the Limits of Insurance shown in the Declarations, whichever is less. 2. The following is added to the Other Insurance Condition in the Business Auto Coverage Form and the Other Insurance— Primary and Excess Insurance Provisions Condition in the Motor Carrier Coverage Form: Coverage for any person(s) or organization(s), where required by written contract or written agreement with you executed prior to any"accidenY', will apply on a primary and non-contributory basis and any insurance maintained by the additionai "insurea"wiil appiy on an excess basis. However, in no event wiil this coverage extend beyond the terms and conditions of the Coverage Form. All other terms, conditions, provisions and exclusions of this policy remain the same. U-CA-�12�-F CW(04/14) Page 1 of 1 Includes copyrighted material of Insurance Services Office, Inc.,with its permission. i � ENDORSEM�NT N0, � This endorsement,effective 12:01 AM, December 1, 2017 i Forms a part of Policy No: CPO 14247915 Issued to: GHD FiOLbING5 U.S. LLC I By: Alc SPECIAt.7Y INSURANCE COMPANY � TH1S ENbORSEMEtVT CHANGES THE POLICY. PlEASE REI�D IT CAREFULLY. � ADDlTfONAL INSUREDfSI ENDORSEMENT � !t is hereby agreed that Section VI. DEFINIT[ONS, Parayraph K. Insured is amended by adding the foflowing sr,heduled entity(s} as additional Insured(s) biat s�lely as respects liability arising out of the Covered Operations i performed by or on behalf of the Named lnsured. . Additional Ins u red(s) As required by written contract executed prior to a Claim or Loss. i I��; ti I; i' I � ' I I: ; i' � E! !1!I other terrns, cc�nrliticros, t3ricl exclusions sh�ll rernain die same. � �_ �t � � � ' i IJTH R17.F.D RFPRESENTATIVE c�r count�rsi�nature (in states whiore applicable) 9G659 (11107) F'A(i F.. 1 O F 1 C 13290 � i Attachment C Work Plan for Additional Evaluation Activities � � January 24, 2018 Reference No. 11115535 Ms. Diana Engeman Remedial Project Manager lowa/Nebraska Remedial Branch Superfund Division U.S. Environmental Protection Agency, Region VII 11201 Renner Boulevard Lenexa, Kansas 66219 Dear Ms. Engeman: Re: Work Plan for Additional Evaluation Activities Former Peoples Natural Gas Site Dubuque, lowa On behalf of MidAmerican Energy Company(MidAmerican), GHD has prepared this work plan for additional evaluation activities at the former Peoples Natural Gas site in Dubuque, lowa. Proposed activities will address specific recommendations provided in the United States Environmental Protection Agency's(USEPA's) December 2015 Fourth Five-Year Review(FYR) Report, as summarized in USEPA's September 27, 2017 letter to MidAmerican. Issues addressed in this work plan include updating the conceptual site model (CSM), particularly relative to silty sand aquifer groundwater discharge to surface water and groundwater delineation in the vicinity of W-21 R and SE-2, as discussed during a November 21, 2017 telephone conversation between the USEPA, MidAmerican, and GHD. The activities described in this work plan will be completed as described below and in general accordance with the March 2017 Site-Specific Health and Safety Plan, the December 2016 Quality Assurance Project Plan (QAPP), and applicable portions of the November 8, 2004 Additional Site Characterization Work Plan (November 2004 Work Plan). 1. Conceptual Site Model Update In the September 27, 2017 letter, the USEPA requested an update to the CSM regarding potential future groundwater contribution to surface water and sediment in Dove Harbor to evaluate possible impact on ecological receptors. The existing hydraulic containment system is intended to minimize movement of impacted silty sand aquifer groundwater towards Dove Harbor. The CSM will be updated by monitoring water levels in select silty sand aquifer monitoring wells and in Dove Harbor to examine groundwater gradients relative to surface water levels. The water level data will be evaluated to document the gradients under varying groundwater and surface water elevation conditions. In support of the water level monitoring program, new monitoring wells(to be designated W-131, W-132, and W-133)will be installed within approximately 3 to 5 feet of each of the silty sand aquifer extraction wells(SE-3, SE-4, and SE-5). The new monitoring wells will be used exclusively for water level monitoring and will not be sampled. Installation details for the proposed wells are provided in Section 1.1. GHa 11228 Aurora A�enuo Ogs Moines Sowa 50322 79[15 U5A T515 41-0 3933 E515 A'!d 39A3 W www_ghd.carn � � 1.1 Monitoring Well Installation Activities The new monitoring wells(W-131,W-132, and W-133)will be constructed of flush-threaded, 2-inch inside-diameter(ID), Schedule 40 polyvinyl chloride(PVC) riser pipe and screen. An lowa-licensed well driller will install the wells using hollow-stem auger drilling techniques. Continuous soil sampling will be conducted prior to well installation to determine the proper screened interval for the wells. Each monitoring well will be screened through the full thickness of the silty sand aquifer at an anticipated total depth of approximately 40 feet below ground surface. The monitoring well screens will be custom-cut to match the thickness of the silty sand aquifer at each well location. Lithologic logging, drilling,well construction, and well development will be completed as described in the November 2004 Work Plan. Before initial use and between each boring, non-dedicated drilling and sampling equipment will be decontaminated in accordance with the November 2004 Work Plan. Investigation-derived waste(IDW)will be containerized to allow for proper disposal. The soil cuttings will be placed in labeled 55-gallon drums and staged on site prior to disposal at the Dubuque Metropolitan Area Solid Waste Agency landfill. Water generated during the site activities will be discharged to the sanitary sewer at the site. Used personal protective equipment(PPE)and disposable sampling equipment will be disposed as general refuse. 1.2 Data Collection, Evaluation, and Reporting Groundwater elevations in select silty sand aquifer monitoring wells and the surface water elevation in Dove Harbor will be continuously monitored using data logging pressure transducers. In addition to a pressure transducer installed in Dove Harbor, pressure transducers will be deployed in the following silty sand aquifer monitoring wells: S-6, TP-102, W-129, W-130, W-131, W-132, and W-133, as shown on Figure 1. The transducers will be installed following development of the newly installed monitoring wells. The transducers will be set to log water levels on an hourly basis. The data loggers will be downloaded quarterly and the data will be reviewed to verify proper data logger operation and review gradients between the silty sand aquifer and Dove Harbor. Site-wide manual water level measurements will be conducted quarterly, two of which will be concurrent with the spring and fall 2018 semiannual monitoring events. The data will be provided and evaluated in the annual report due in February 2019. The existing CSM will be further developed and refined using newly acquired data to develop a three-dimensional (3D) representation of the CSM, including the interaction of groundwater with the surface water and sediment in DovP Harbor. 2. Groundwater Delineation 2.1 W-21R Delineation In 2005, alluvial aquifer monitoring well W-21 was replaced with W-21R due to benzene being detected above the cleanup level of 5 micrograms per liter(�g/L) in the well and suspicion of well damage. Corrosion of the black steel well casing was confirmed during removal of the well casing during well abandonment. Replacement monitoring well W-21 R was installed near the original W-21. Contaminant concentrations have fluctuated since replacement of the well, but generally appear to be dissipating since that time and benzene concentrations have been below the cleanup level for the last three sampling 11115535Engeman-3 2 � � events(Attachment A).As discussed during the November 21, 2017 telephone conversation, no additional delineation is required around W-21 R because recent sample results have been compliant with the cleanup levels. W-21 R is in the current groundwater monitoring plan and will continue to be sampled on a semiannual basis for ongoing evaluation. 2.2 SE-2 Delineation As discussed with the USEPA during the November 21, 2017 telephone conversation, MidAmerican will further evaluate silty sand aquifer conditions north of SE-2 by collecting groundwater samples from silty sand aquifer monitoring welis SS-10 and W-120 during the spring and fall 2018 groundwater sampling events. Monitoring wells SS-10 and W-120 are located north of 11�h Street and are the closest silty sand aquifer wells to SE-2 in the northerly direction. During both the spring and fall 2018 groundwater monitoring events, SS-10 and W-120 will be sampled for the laboratory analysis of benzene, toluene, ethylbenzene, and xylenes(BTEX)and polynuclear aromatic hydrocarbons(PAHs)using the methodologies described in the December 2016 QAPP. These groundwater sampling results will be presented and evaluated in the Annual Report due in February 2019. 3. Proposed Schedule Pending USEPA approval and City of Dubuque permitting, it is anticipated the well installation and data collection work will be initiated in March 2018. Groundwater elevation data will be downloaded on a quarterly basis. Groundwater sampling events will be completed in April and October 2018. If you have any questions regarding the site, please contact Jenny Coughlin of MidAmerican at 515-281-2344 or me at 515-414-3935. Sincerely, GHD 1�� Kevin G. Armstrong, C.P.G., P.M.P. CO/hs/3 Attachments Figure 1 Proposed Monitoring Wells and Water Level Transducer Locations Attachment A W-21/W-21 R Concentration Trends and Data Table cc: Jenny Coughlin, MidAmerican (electronic copy only) Dan Cook, lowa Department of Natural Resources(electronic copy only) Brad Azeltine, lowa Department of Transportation (electronic copy only) Barry Lindahl, City of Dubuque (electronic copy only) John Klostermann, City of Dubuque(electronic copy only) 11115535Engeman-3 3 GHO1��15535En9amen0-0RTP i % � � ,��` � I +w,o � o �w ��, o ��,5 ___ ,,.,�, . .w +s ��.:,,..,�� 00 � , 00 o� o , =a z .- 0� .��osA��A�E , -' �o� .� tEa �E�EE � iiea ss'+ os�sE MISSISSIPPIRIVER '� " ••a� � rp.0. (DOVEHqRBOR) / .Z ai �o.� � ,�y�:_.' x f� D � L„aE LEGEND e�f PE�� +w�e ` �__�TECHNIGAL IMPRACTICABII.ITV ZONE WATER TABLE MONITORING WELL / �;xo'' s } SILTYSANDMONITORINGWELL � / � ALLUVIALAOUIFER MONITORING WELL / � �� HBNNDONED MONITORING WELL � � p PROPOSED SURFACE WATER GAUGING IOCFTION � `� o 'R��p �PROPOSE�WATER LEVELTRNNSDUCER LOCATION qtq s � _ �/ � �� . PROPOSEDSILTVSANDAOUIFERMONITOFINGWELL I o �a �a `\ / }o-pt� 4�Pc �-% ��w/ �N`°°�P '"c 1 /�\\ w.t16i9w_� \ I MIDAMERICAN ENERGY COMPANY n i i 5535-ooz 0 JS 150ft �� PEOPLESNATURALGASSITE �anza,2oie � �fj� DUBUQUE,IOWA U PRUF'OSED MONITORING WELLS AND � WATER LEVEL TRANSDUCER LOCATIONS FIGURE 1 Attachment A W-21 /W-21 R Concentration Trends and Data Table 10000 - 1000 = — 100 — - — - - -- J = 10 _ - — — — c �` o --+t ..—,_�._ _n—�--. � � L ' � � _ _ - - r� ,, ,. .,., ,., -f-,•� ,... ,... , . .. „ .. .. . m c � 0 U 0.1 - - 0.01 , , .,•• � , -- � , � �`° �1 04' �0 0� o'� o`L o3 oR oh o�° 01 o`b o°' ,�� ,�`L ,�3 �p� ��' ,�`° ,�1 5�Q 5�� 5�Q 5�Q 5�� 5�� 5�� 5�� 5�� 5�Q 5�� 5�Q 5�� 5�� 5�� 5�Q 5�� 5�� 5�� 5�Q 5�� 5�� SE-2 System Shutdown t Benzene -��-��Toluene Ethylbenzene - Xylenes —�Naphthalene � MIDAMERICAN ENERGY COMPANY I11115535-002 PEOPLES NATURAL GAS SITE � DUBUQUE,l04NA �JAtJ.22,20 io � W-21/W-21R TIME-SERIES GRAPH FIGURE A-1 11115535 � W-21/W-21R GROUNDWATER ANALYTICAL RESULTS MIDAMERICAN ENERGY COMPANY PEOPLES NATURAL GAS SITE-DUBUQUE,IOWA Sample Location: W-21 W-21 W-21 W-21 W-21 W-21 W-21 W-21 W-21 Screened Unit: Alluvial Alluvial Alluvial Alluvial Alluvial Alluvial Alluvial Alluvial Alluvial Depth BTOC(feet�: 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 Sample Date: 26-Nov-96 22-Jan-97 29-May-97 25-Sep-97 18-Dec-97 18-Dec-97 77-Mar-98 16-Jun-98 29-Sep-98 Cleanup Analyte Units Level Benzene Ng/L 5 67 1 U 71 2.3 1 U na 1 U 1 U 2 Ethylbenzene Ng/L 700 81 1.2 260 6.2 1 U na 1 U 1 U 1 U Toluene Ng/L 1,000 20 U 1 U 10 U 1 U 1 U na 1 U 1 U 1 U Xylenes Ng/L 10,000 na na 89 3.2 1 U na 1 U 1 U 1 U 2-Methylnaphthalene Ng/L -- 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U Acenaphthene ug/L -- 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U 2 Acenaphthylene �ag/L -- 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U Anthracene Ng/L -- 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U Benzo(a)anfhracene Ng/L 0.1 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U Benzo(a)pyrene ug/L 0.2 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U Benzo(b)fluoranthene Ng/L 0.1 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U Benzo(g,h,i)perylene �g/L -- 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U Benzo(k)fluoranthene Ng/L 0.29 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U Chrysene Ng/L 2.9 10U 10U 10U 10U 10U 10U 10U 10U 10U Dibenzo(a,h)anthracene yg/L 0.013 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U Fluoranthene Ng/L -- 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U Fluorene ug/L -- 10U 10U 10U 10U 10U 10U 10U 10U 10U Indeno(1,2,3cd)pyrene Ng/L 0.1 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U Naphthalene �g/L 0.14 10 U 10 U 10 lJ 2 10 U 10 U 10 U 10 U 10 U Phenanthrene ug/L -- 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U Pyrene E�g/L -- 10U 10U 10U 10U 10U 10U 10U 10U 10U Dibenzofuran ug/L -- 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U Dubury�ae-PNG Groundwater(10-17).xlsx W-21 1/21/2018 1 of 7 W-21/W-21R GROUNDWATER ANALYTICAL RESULTS MIDAMERICAN ENERGY COMPANY PEOPLES NATURAL GAS SITE-DUBUQUE,IOWA Sample Location: W-21 W-21 W-21 W-21 W-21 W-21 W-21 W-21 W-21 Screened Unit: Alluvial Alluvial Alluvial Alluvial Alluvial Alluvial Alluvial Alluvial Aliuvial Depth BTOC(feet): 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 Sample Date: 10-Dec-98 23-Mar-99 23-Jun-99 28-Sep-99 15-Dec-99 15-Mar-00 06-Jun-00 14-Sep-00 14-Dec-00 Cleanup Analyte Units Level Benzene �g/L 5 3 2.3 3.9 0.48 0.91 0.56 4.7 1 U 1 U Fthylbenzene Ng/L 700 0.5 1 U 6.1 1 U 1.4 0.42 2.9 1 U 1 U Toluene Ng/L 1,000 1 U 1 U 1 U 1 U 0.36 0.48 1.5 1 U 0.3J Xylenes Ng/L 10,000 1 U 1 U 1.5 1 U 0.89 0.64 2.6 1 U 0.5 J 2-Methylnaphthalene Ng/L -- 10 U 10 U 10 U 10 U 10 U 2.0 U 10 U 10 U 10 U Acenaphthene ug/L -- 10 U 10 U 10 U 10 U 10 U 2.0 U 10 U 10 U 10 U Acenaphthylene Ng/l_ -- 10 U 10 U 10 U 10 U 10 U 2.0 U 10 U 10 U 10 U Anthracene ug/L -- 10 U 10 U 10 U 10 U 10 U 0.10 U 10 U 10 U 10 U Benzo(a)anthracene Ng/L 0.1 10 U 10 U 10 U 10 U 10 U 0.10 U 10 U 10 U 10 U Benzo(a)pyrene ug/L 0.2 10 U 10 U 10 U 10 U 10 U 0.10 U 10 U 10 lJ 10 U Benzo(b)fluoranthene Ng/L 0.1 10 U 10 U 10 U 10 U 10 U 0.10 U 10 U 10 U 10 U Benzo(g,h,i)perylene �g/L -- 10 U 10 U 10 U 10 U 10 U 0.20 U 10 U 10 U 10 U Benzo(k)fluoranthene Ng/L 0.29 10 U 10 U 10 U 10 U 10 U 0.10 U 10 U 10 U 10 U Chrysene Ng/L 2.9 10U 10U 10U 10U 10U 0.10U 10U 10U 10U Dibenzo(a,h)anthracene Ng/L 0.013 10 U 10 U 10 U 10 U 10 U 0.20 U 10 U 10 U 10 U Fluoranthene Ng/L -- 10 U 10 U 10 U 10 U 10 U 0.029 10 U 10 U 10 U Fluorene Ng/L -- 10 U 10 U 10 U 10 U 10 U 0.048 10 U 10 U 10 U Indeno(1,2,3cd)pyrene Ng/L 0.1 10 U 10 U 10 lJ 10 U 10 U 0.20 U 10 U 10 U 10 U Naphthalene ug/L 0.14 10 U 10 U 10 U 10 U 4 2.0 U 2 10 U 10 U Phenanthrene �g/l. -- 10 U 10 U 10 U 10 U 10 U 0.062 10 U 10 U 10 U F'yrene Ng(L -- 10 U 10 U 10 U 10 U 10 U 0.023 10 lJ 10 U 10 U Dibenzofuran Ng/L -- 10 U 10 U 10 U 10 U 10 U na 10 U 10 U 10 U Dubuque-PNG Groundwater(10-17).xlsx W-21 1/?_1/2018 2 of 7 W-21/W-21R GROUNDWATER ANALYTICAL RESULTS MIDAMERICAN ENERGY COMPANY PEOPLES NATURAL GAS SITE-DUBUQUE,IOWA Sample Location: W-21 W-21 W-21 W-21 W-21 W-27 W-21 W-21 W-21 Screened Unit: Alluvial Alluvial Alluvial Alluvial Alluvial Alluvial Alluvial Alluvial Alluvial Depth BTOC(feet): 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 Sample Date: 21-Mar-01 07-Jun-01 20-Sep-01 12-Dec-01 14-Mar-02 07-Jun-02 18-Sep-02 05-Dec-02 09-Jun-03 Cleanup Analyte Units Level Benzene Ng/L 5 0.18 J 1 U 1 U 110 42 35 3.7 3 2 U Ethylbenzene Ng/L 700 1 U 1 U 1 U 57 37 16 2.5 3.4 2 U Toluene Ng/L 1,000 0.29 J 1 U 1 U 16 6.6 5.5 0.39 J 0.45 J 2 U Xylenes Ng/L 10,000 0.21 J 1 U 1 U 77 33 25 2.4 1.7 7 U 2-Methylnaphthalene Ng/L -- 10 U 10 U 10 U 10 U 2.7 J 10 U 10 U 10 U na Acenaphthene ug/L -- 10 U 10 U 10 U 0.6 J 37 12 4.1 J 14 1.4 Acenaphthylene Ng/L -- 10 U 10 U 10 U 0.85 J 26 8.6 J 1.8 J 5.1 J 0.28 Anihracene Ng/L -- 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U 0.12 Benzo(a)anthracene Ng/L 0.1 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U 0.1 Benzo(a)pyrene �g/L 0.2 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U 0.14 Benzo(b)fluoranthene Ng/L 0.1 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U 0.14 Benzo(g,h,i)perylene ug/L -- 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U 0.11 Benzo(k)fluoranthene Ng/L 0.29 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U 0.15 Chrysene ug/L 2.9 10U 10U 10U 10U 10U 10U 10U 10U 0.15 �ibenzo(a,h)anthracene ug/L 0.013 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U 0.1 U Fluoranthene ug/L -- 10 U 10 U 10 U 10 U 10 U 1.2 J 10 U 10 U 0.36 Fluorene ug/L -- 10 U 10 U 10 U 10 U 4.4 J 1.6 J 10 U 3.0 J 0.29 Indeno(1,2,3cd)pyrene ug/L 0.1 10 U 10 U 10 U 10 U 10 U 10 U 10 U 10 U 0.1 Naphthalene Ng/L 0.14 10 U 10 U 10 U 270 1300 260 10 U 7 0.15 Phenanthrene Ng/L -- 0.37 J 10 U 10 U 0.25 J 10 U 0.81 J 10 U 10 U 0.21 Pyrene �g/L -- 10 U 10 U 10 U 10 U 10 U 1.4 J 10 U 10 U 0.27 Dibenzofuran Ng/L -- 10 U 10 U 10 U 10 U 4.3 J 1.6 J 0.53 J 4.1 J na Dubuque-PNG Groundwater(10-17).xlsx W-21 1/21/2018 3 of 7 W-21/W-21R GROUNDWATER ANALYTICAL RESULTS MIDAMERICAN ENERGY COMPANY PEOPLES NATURAL GAS SITE-DUBUQUE,IOWA Sample Location: W-27 W-21 W-21 W-21R W-21R W-21R W-21R W-21R W-21R Screened Unit: Alluvial Alluvial Alluvial Alluvial Alluvial Alluvial Alluvial Alluvial Alluviai Depth BTOC(feet): 50.0 50.0 50.0 49.5 49.5 49.5 49.5 49.5 49.5 Sample Date: 30-Mar-04 14-Sep-04 14-Mar-05 02-May-05 10-Oct-05 14-Mar-06 11-Sep-O6 17-Apr-07 19-Sep-07 Cleanup Analyte Units Level Benzene Ng/L 5 1.4 44 66 65 23 3.2 5.57 104 2.41 Ethylbenzene Ng/L 700 1.0 U 0.67 Ja 1.0 U 1.0 U 1.0 U 1.0 U 1.00 U 1.00 U 1.00 U Toluene ug/L 1,000 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.00 U 1.00 U 1.00 U Xylenes ug/L 10,000 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U 3.00 U 3.00 U 3.00 U 2-Methylnaphthalene ug/L -- na na na na na na na na na Acenaphthene Ng/L -- 0.72 Ja 1.3Ja 0.92 Ja 12 7.2 3.7 1.69 7.79 1.18 Acenaphthylene Ng/L -- 1.2 Ja 11 3.1 30 12 4.9 0.0850 U 1.78 0.0850 U Anthracene Ng/L -- 0.055 0.034 Ja 0.026 Ja 0.32 0.31 0.25 0.306 0.288 0.124 J Benzo(a)anthracene ug/L 0.1 0.3 0.10 Ja 0.13 0.12 U 0.12 U 0.13 U 0.00300 U 0.00300 U 0.00300 U Benzo(a)pyrene yg/L 0.2 0.43 0.12 J 0.16 0.12 U 0.12 U 0.13 U 0.0320 U 0.0320 U 0.0320 U Benzo(b)fluoranthene ug/L 0.1 0.52 0.17 0.23 0.046 U 0.047 U 0.049 U 0.0130 U 0.0130 U 0.0130 U Benzo(g,h,i)perylene Ng/L -- 0.47 0.11 Ja 0.22 0.19 U 0.19 U 0.19 U 0.00900 U 0.00900 U 0.00900 U Benzo(k)fluoranthene ug/L 0.29 0 25 0.079 0.11 0.046 U 0.047 U 0.049 U 0.0150 U 0.0150 U 0.0150 U Chrysene ug/L 2.9 0.4 0.1�1 0.17 M 0.12 U 0.12 U 0.13 U 0.00500 U 0.00500 U 0.00500 U Dibenzo(a,h)anthracene Ng/L 0.013 0.30 U 0.29 U 0.29 U 0.28 U 0.28 U 0.29 U' 0.0100 U 0.0100 U 0.0100 U Fluoranthene ug/L -- 0.78 0.29 0.36 0.12 U 0.12 U 0.13 U 0.0243 J 0.0100 U 0.0100 U Fluorene ug/L -- 0.15 Ja 0.13 Ja 0.068 Ja 6.1 3.1 2.6 1.8$ 3.35 0.906 Indeno(1,2,3cd)pyrene Ng/L 0.1 0.46 0.14 0.21 0.12 U 0.12 U 0.13 U 0.00700 U 0.00700 U 0.00700 U Naphthalene Ng/L 0.14 1.3 Ua 0.61 Ja 1.3 U 0.57 Ja 1.2 U 1.3 U 0.217 0.0540 U 0.119 Phenanthrene Ng/L -- 0.32 0.13 0.13 0.030 Ja 0.094 U 0.097 U 0.0445 J 0.00700 U 0.0589 J Pyrene ug/L -- 0.6 0.20 Ja 0.28 0.23 U 0.24 U 0.24 U 0.102 J 0.0190 U 0.0190 U Dibenzofuran ug/L -- na na na na na na na na na Dubuque-PNG Groundwater(10-17).xlsx W-21 1/21/2018 4 of 7 W-21/W-21R GROUNDWATER ANALYTICAL RESULTS MIDAMERICAN ENERGY COMPANY PEOPLES NATURAL GAS SITE-DUBUQUE,IOWA Sample Location: W-21R W-21R W-21R W-21R W-21R W-21R W-21R W-21R Screened Unit: Alluvial Alluvial Alluvial Alluvial Alluvial Alluvial Alluvial Alluvial Depth BTOC(feet): 49.5 49.5 49.5 49.5 49.5 49.5 49.5 49.5 Sample Date: 05-May-08 30-Sep-08 28-Apr-09 15-Sep-09 30-Mar-10 05-May-10 15-Sep-10 27-Apr-11 Cleanup Analyte Units Level Benzene Ng/L 5 34.2 2.17 67.0 1.00 U 206 na 2.84 1.00 U Ethylbenzen� Ng/L 700 1.00 U 1.00 U 1.00 U 1.00 U 1.64 na 1.00 U 1.00 U Toluene Ng/L 1,000 1.00 U 1.00 U 1.00 U 1.00 U 1.00 U na 1.00 U 1.00 U Xylenes Ng/L 10,000 3.00 U 3.00 U 3.00 U 3.00 U 6.00 U na 3.00 U 3.00 U 2-Methylnaphthalene ug/L -- na na na na na na na na Acenaphthene Ng/L -- 2.55 3.66 7.32 2.82 16.1 0.979 1.34 0.2 Acenaphthylene Ng/L -- 1.00 0.568 1.27 0.952 30.5 0.0870 U 0.0870 U 0.0870 U Anthracene ug/L -- 0.117 J 0.149 J 0.14800 J 0.257 0.0100 U 0.0583 J 0.188 J 0.0324 J Benzo(a)anthracene ug/L 0.1 0.00300 U 0.00500 U 0.00500 U 0.00500 U 0.00500 U 0.00500 U 0.00500 U 0.0200 U Benzo(a)pyrene Ng/L 0.2 0.0320 U 0.00800 U 0.00800 U 0.00800 U 0.00800 U 0.00800 U 0.00800 U 0.00800 U Benzo(b)fluoranthene ug/L 0.1 0.0130 U 0.0280 U 0.02800 U 0.02800 U 0.0280 U 0.0280 U 0.0280 U 0.0280 U Benzo(g,h,i)perylene �g/L -- 0.00900 U 0.00800 U 0.00800 U 0.00800 U 0.00800 U 0.00800 U 0.00800 U 0.00800 U Benzo(k)fluoranthene Ng/L 0.29 0.0150 U 0.00700 U 0.00700 U 0.00700 U 0.00700 U 0.00700 U 0.00700 U 0.00700 U Chrysene �g/L 2.9 0.00500 U 0.00800 U 0.00800 U 0.00800 U 0.00800 U 0.00800 U 0.00800 U 0.00800 U Dibenzo(a,h)anthracene Ng/L 0.013 0.0100 U 0.0100 U 0.0100 U 0.0100 U 0.0100 U 0.0100 U 0.0100 U 0.0100 U Fluoranthene Ng/L -- 0.0100 U 0.0398 J 0.0631 J 0.0526 J 0.0100 U 0.0100 U 0.104 J 0.0100 U Fluorene Ng/L -- 1.18 3.8 4.99 1.91 0.0160 U 0.724 1.14 0.301 Indeno(1,2,3cd)pyrene Ng/L 0.1 0.00700 U 0.00600 U 0.00600 U 0.00600 U 0.00600 U 0.00600 U 0.00600 U 0.00600 U Naphthalene ug/L 0.14 0.438 0.417 0.04600 U 0.166 R 0.0460 U 0.0460 U 0.0460 U Phenanthrene �g/L -- 0.0589 J 0.0547 J 0.00500 U 0.00666 J 0.00500 U 0.00500 U 0.00500 U 0.00500 U Pyrene Ng/L -- 0.0190 U 0.0170 U 0.0170 U 0.0170 U 0.0170 U 0.0170 U 0.0170 U 0.0170 U Dibenzofuran ug/L -- na na na na na na na na Dubuque-PNG Groundwater(10-17).xlsx W-21 1/21/2018 5 of 7 W-211W-21R GROUNDWATER ANALYTICAL f2ESULTS MIDAMERICAN ENERGY COMPANY PEOPLES NATURAL GAS SITE-DUBUQUE,IOWA Sample Location: W-21R W-21R W-21R W-21R W-21R W21R W-21R W-27R W-21R Screened Unit: Alluvial Alluvial Alluvial Alluvial Alluvial Alluvial Alluvial Alluvial Alluvial Depth BTOC(feet): 49.5 49.5 49.5 49.5 49.5 49.5 49.5 49.5 49.5 Sample Date: 19-Sep-11 25-Apr-12 24-Sep-12 30-Apr-13 04-Sep-13 25-Mar-14 21-Oct-14 28-Apr-15 14-Oct-15 Cleanup Analyte Units Level Benzene Ng/L 5 28.5 22.8 57.3 3.72 11.5 17.3 12.5 17.2 21.2 Ethylbenzene Ng/L 700 1.00 U 1.00 U 1.00 U 1.00 U 1.00 U 1.00 U 1.00 U 1.00 U 1.00 U Toluena Ng/L 1,000 1.00 U 1.00 U 1.00 U 1.00 U 1.00 U 1.00 U 1.00 U 1.00 U 1.00 U Xylenes Ng/L 10,000 3.00 U 3.00 U 3.00 U 3.00 U 3.00 U 3.00 U 3.00 U 3.00 U 3.00 U 2-Methylnaphthalene Ng/L -- na 0.100 U 0.164 J na na na 0.100 U 0.100 U 0.101 U Acenaphthene ug/L -- 0.0220 U 16.6 9.63 11.2 0.145 13.4 17.3 8.54 11.3 Acenaphthylene ug/L -- 0.0870 U 1.72 0.0870 U 0.400 U 2.77 0.430 U 1.58 1.48 1.91 Anthracene Ng/L -- 0.204 0.115 J 0.154 J 0.163 0.158 0.108 U 0.108 0.100 U 0.101 U Benzo(a)anthracene ug/L 0.1 0.0200 U 0.0200 U 0.0200 U 0.100 U 0.0222 U 0.108 U 0.100 U 0.0500 U 0.0505 U Benzo(a)pyrene ug/L 0.2 0.00800 U 0.00800 U 0.00800 U 0.100 U 0.0311 U 0.108 U 0.100 U 0.100 U 0.101 U Benzo(b)fluoranthene Ng/L 0.1 0.0280 U 0.0280 U 0.0280 U 0.100 U 0.00778 U 0.108 U 0.100 U 0.0500 U 0.0505 U Benzo(g,h,i)perylene Ng/L -- 0.00800 U 0.00800 U 0.00800 U 0.200 U 0.00889 U 0.215 U 0.100 U 0.100 U 0.101 U Benzo(k)fluoranthene Ng/L 0.29 0.00700 U 0.00700 U 0.00700 U 0.100 U 0.00889 U 0.108 U 0.100 U 0.100 U 0.101 U Chrysene Ng/l 2.9 0.00800 U 0.00800 U 0.0197 J 0.100 U 0.00889 U 0.108 U 0.100 U 0.100 U 0.101 U Dibenzo(a,h)anthracene ug/L 0.013 0.0100 U 0.0100 U 0.0100 U 0.100 U 0.0111 U 0.108 U 0.0170 U 0.0170 U 0.0172 U Fluoranthene ug/L -- 0.133 J 0.0788 J 0.147 J 0.155 0.12 0.149 0.100 U 0.100 U 0.101 U Fluorene ug/L -- 7.8 5.16 h.97 3.03 5.17 4.04 2.38 1.20 1.15 Indeno(1,2,3cd)pyrene Ng/L 0.1 0.00600 U 0.00600 U 0.00600 U 0.100 U 0.00667 U 0.108 U 0.100 U 0.0500 U 0.0505 U Naphthalene Ng/L 0.14 0.0460 U 0.0460 U 0.572 0.200 U 9.05 J 0.215 U 0.100 U 0.100 U 0.101 U Phenanthrene ug/L -- 0.00500 U 0.00500 U 0.128 0.100 U 0.0914 J 0.108 U 0.100 U 0.100 U 0.101 U Pyrene �g/L -- 0.0170 U 0.0170 U 0.0596 J 0.100 U 0.063 0.108 U 0.100 U 0.100 U 0.101 U Dibenzofuran Ng/L -- na na na na na na na na na Dubuque-PNG Groundwater(10-17).xlsx W-21 1/21/2018 6 of 7 W-21/W-21R GROUNDWATER ANALYTICAL RESULTS MIDAMERICAN ENERGY COMPANY PEOPLES NATURAL GAS SITE-DUBUQUE,IOWA Sample Location: W-21R W-21R W-21R W-21R W-21R(Dup) ` Screened Unit: Alluvial Aliuvial Alluvial Alluvial Alluvial � Depth BTOC(feet): 49.5 49.5 49.5 49.5 49.5 Sample Date: 04-Apr-16 04-Oct-16 05-Apr-17 03-Oct-17 03-Oct-17 , Cieanup Analyte Units Level Benzene Ng/L 5 5.08 1.93 1.71 1.08 1.12 Ethylbenzene Ng/L 700 1.00 U 1,00 U 1.00 U 1.00 lJ 1.00 U Toluene Ng/L 1,000 1.00 U 1.00 U 1.00 U 1.00 U 1.00 U Xylenes Ng/L 10,000 3.00 U 3.00 U 3.00 U 3.00 U 3.00 U 2-Methylnaphthalene Ng/L -- 0.102 U 0.100 U 0.100 U 0.105 U 0.104 U Acenaphthene ug/L -- 1.98 0.826 4.73 2.35 J 1.15 J Acenaphthylene Ng/L -- 0.767 0.546 1.12 0.683 J 0.343 J Anthracene ug/L -- 0.102 U 0.100 U 0.100 U 0.105 U 0.104 U Benzo(a)anthracene Ng/L 0.1 0.0510 U 0.0500 U 0.0500 U 0.0526 U 0.0521 U Benzo(a)pyrene ug/L 0.2 0.102 U 0.100 U 0.100 UJ 0.105 U 0.104 U Benzo(b)fluoranthene Ng/L 0.1 0.0510 U 0.0500 U 0.0500 UJ 0.0�26 UJ 0.154 J Benzo(g,h,i)perylene ug/L -- 0.102 U 0.100 U 0.100 UJ 0.105 U 0.104 UJ Benzo(k)fluoranthene ug/L 0.29 0.102 U 0.100 U 0.100 U 0.105 U 0.104 U Chrysene ug/L 2.9 0.102 U 0.100 U 0.100 U 0.105 U 0.104 U Uibenzo(a,h)anthracene ug/L 0.013 0.0173 U 0.0170 U 0.0170 UJ 0.0179 UJ 0.0818 J Fluoranthene ug/L -- 0.102 U 0.100 U 0.100 U 0.105 U 0.104 U Fluorene ug/L -- 0.183 0.121 0.335 0.117 0.104 U Indeno(1,2,3cd)pyrene ug/L 0.1 0.0510 U 0.0500 U 0.0500 UJ 0.0526 U 0.0521 U Naphthalene Ng/L 0.14 0.102 U 0.100 U 0.100 U 0.105 U 0.104 U Phenanthrene ug/L -- 0.102 U 0.100 U 0.100 lJ 0.105 U 0.104 U Pyrene Ng/L -- 0.102 U 0.100 U 0.100 U 0.105 U 0.104 U Dibenzofuran Ng/L -- na na na na na Dubuque-PNG Groundwater(10-17).xlsx W-21 1/21/2018 7 of 7 www.ghd.com ^ �