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HomeMy WebLinkAboutContract 26913 CITY SECRETARY CONTRACT NO. STATE OF TEXAS § § KNOW ALL PERSONS BY THESE PRESENTS COUNTY OF TARRANT § USE AGREEMENT TO INSTALL GEOPROBE BORINGS This agreement is entered by and between the City of Fort Worth, Texas, a home-rule municipal corporation situated in Tarrant and Denton Counties, Texas, hereinafter called "City", acting herein through Charles Boswell, its duly authorized Assistant City Manager, and Chevron Products Company, a division of Chevron U.S.A., Inc. hereinafter referred to as "User", acting herein by and through J. G. Suminski, its duly authorized Attorney-in-fact, pursuant to the requirement of Chapter 12.5, Division 4, of the City Code of the City of Fort Worth. NOW THEREFORE, it is agreed as follows: 1. GRANT OF USE A. City agrees to permit User to conduct environmental sampling through geoprobe borings, the City property, as shown on the map which is part of Exhibit "A". However, this grant of use is conditioned upon the following: an unmapped 48" corrugated metal pipe storm drain on an unknown alignment is in this area. This grant is expressly conditioned on User locating this pipe and not damaging this pipe. User also agrees to notify City if they believe that this pipe has been contaminated. B. User shall have no property rights to any City property or right-of-way in which environmental sampling is conducted, and access to the property shall be nonexclusive at the City's discretion. 2. REGULATION OF CONSTRUCTION A. User shall conduct environmental sampling in accordance with federal, state and local law and regulations. B. User shall follow the scope and details of the construction of the well that is included in User's Engineers' Informal Request for Installation of Four (4) Geoprobe Borings/Piezometers dated May 3, 2000, signed by Chad E. Vowell and Bryan Gay of Harding Lawson Associates, and in User's Engineers' Formal Request for Installation of Four(4) Geoprobe Borings/Piezometers dated May 9, 2000 prepared and signed by Chad E. Vowell and Bryan Gay, of Harding Lawson Associates, and are hereby attached as Exhibit`B" and "C" and incorporated herein fully by reference. C. User shall ensure that the person who performs any drilling of the geoprobe borings in conjunction with the environmental sampling ,: .properly „,.�ens�,��ed and bonded U) CCU)E)D Use Agreement for Environmental Sampling with r( ���(( ns V1,11 Chevron Products Company,Chevron Facility#61320892 CNN^�5� ` �� P e 1 of 10 C. User shall ensure that the person who performs any drilling of the geoprobe borings in conjunction with the environmental sampling, is properly licensed and bonded under Chapter 32 of the Texas Water Code to perform work on City property and public right-of-way. D. User agrees that it shall require any Contractor that performs any aspect of the construction, operation, installation, or maintenance of the geoprobe borings and piezometers to have all federal, state and local licenses to perform such work. E. User agrees to use the equipment that it listed in Exhibits `B" and "C" in the construction, operation and maintenance of the geoprobe borings and piezometers. F. User will use Groundwater Monitoring, Inc., a state licensed environmental drilling firm, to drill the geoprobe borings. If User determines that it will be necessary to Contract with another company, User agrees to obtain written acceptance by City prior to using any other drilling company. G. User shall properly backfill and cap all geoprobe borings on the day the borings are made. H. When User performs or causes the performance of any work in the right-of-way or other public property, or so closely adjacent to such places as to create hazards for the public, User, its employees, or contractor shall provide construction and maintenance signs and sufficient barricades at work sites to protect the public, equipment, and workmen. The application of such traffic control devices shall be consistent with the standards and provisions of the latest addition to the Texas Manual on Uniform Traffic Control devices. Appropriate warning lights shall be used at all construction, maintenance, and monitoring/sampling areas where one or more traffic lanes are being obstructed during nighttime conditions. I. User shall ensure that Contractor contacts the City's Department of Engineering at least forty-eight (48) hours before the geoprobe boring installation commences, and that Contractor complies with all requirements of the City's utility inspectors. J. User shall obtain certification of utility clearance prior to drilling 3. REPORTING AND MITIGATION OF CONTAMINATION A. User agrees to provide City with appropriate documentation indicating the completion date of sampling, geological conditions, certification of proper completion, any findings regarding the presence or non-presence of contamination, test results generated as a result of said geoprobe borings and piezometer installation, and any other information submitted to the Texas Natural Resources Conservation Use Agreement for Environmental Sampling with Chevron Products Company,Chevron Facility#61320892 Page 2 of 10 Commission at the same time that such information is submitted to the Texas Natural Resource Conservation Commission. B. If environmental sampling confirms contamination of soil, groundwater, or the aforementioned unmapped forty-eight inch (48") corrugated metal pipe storm drain within the City's right-of-way, City property or other property, User shall notify the City's Department of Environmental Management of same in writing within ten (10) days after learning of the confirmation of contamination. User shall cooperate with the City in mitigating the contamination as necessary. User agrees that in the event contamination is attributable to and resulting from User's activities, such remediation shall be at User's sole cost and expense in accordance with the procedures and standards set forth by the Texas Natural Resource Conservation Commission and/or the United States Environmental Protection Agency. 4. INSPECTIONS The City Traffic Engineer, the City's Environmental Manager, or their authorized representatives, are authorized to inspect User's operations at all reasonable times and to halt User's operations when necessary to protect the environment or the traveling public. User shall ensure that the Contractor complies with all orders to halt operations given pursuant to this paragraph. 5. RESTORATION OF PROPERTY A. User shall repair, clean up, and restore all right-of-way and other City property disturbed during the construction of the geoprobe borings and shall warrant the repairs and restoration of such property for a period of two years from the date of completion of same. Such repairs, clean up, and restoration shall return the disturbed property to substantially the same condition they were in before User's operations began. The determination that the property has been returned to substantially the same condition shall be made by the City's Director of Transportation and Public Works, or his designee. B. City shall have the right at any time to order and require User to remove or abate any spill, discharge, equipment, or other facility caused by User that is dangerous to life or property. In the event User fails or refuses to comply with the City's order, or if an emergency exists which precludes the City from giving notice to User prior to responding, City shall have the right to remove or abate same at reasonable cost and at the expense of User, all without compensation or liability for damages to User. Use Agreement for Environmental Sampling with Chevron Products Company,Chevron Facility#61320892 Page 3 of 10 C. If User fails to restore property as required within 15 days of written notice from City, City may cause the property to be restored without further notice to User. User agrees to pay City for all costs incurred by City in said restoration. 6. TERM This agreement shall be valid upon its execution by both parties, and shall run for a period not to exceed two years, or until the satisfaction of the Texas Natural Resource Conservation Commission and the City, whichever occurs first. If additional environmental sampling is needed after the two-year period, User must request an amendment from City to extend the term. 7. INDEMNIFICATION A. Definitions. In this paragraph, the following works and phrases shall be defined as follows: 1. Environmental Damages shall mean all claims, judgments, damages, losses, penalties, fines, liabilities (including strict liability), encumbrances, liens, costs, and expenses of investigation and defense of any claim, whether or not such claim is ultimately defeated, and of any good faith settlement or judgment, of whatever kind or nature, contingent or otherwise, matured or unmatured, foreseeable or unforeseeable, including without limitation reasonable attorney's fees and disbursements and consultant's fees, any of which are incurred as a result of the existence of a violation by User of environmental requirements pertaining to remediation activities and sampling, and including without limitation: a. Damages for personal injury and death, or injury to property or natural resources. b. Fees incurred for the services of attorneys, consultants, contractors, experts, laboratories and investigation or remediation of any violation by User of environmental requirements including, but not limited to, the preparation of any feasibility studies or reports of the performance of any cleanup, remediation, removal, response, abatement, containment, local governmental agency or political subdivision, or otherwise expended in connection with the existence of violations of environmental requirements, and including without limitation any attorney's fees, costs and expenses, incurred in enforcing this contract or collecting any sums due hereunder; and Use Agreement for Environmental Sampling with Chevron Products Company,Chevron Facility#61320892 Page 4 of 10 c. Liability to any third person or governmental agency to indemnify such person or agency for costs expended in connection with the items referenced in subparagraph(b) herein. 2. Environmental requirements shall mean all applicable statutes, regulations, rules, plans, authorizations, concessions, franchises, and similar items, of all governmental agencies, departments, commissions, boards, bureaus, or instrumentalities of the United States, states, and political subdivisions thereof and all applicable judicial, administrative, and regulatory decrees,judgments, and orders relating to the protection of human health or the environment, including without limitation: a. All requirements, including, but not limited to, those pertaining to reporting, licensing, emissions, discharges, releases, or threatened releases of hazardous materials, pollutants, contaminants or hazardous or toxic substances, materials, or wastes whether solid, liquid, or gaseous in nature, into the air, surfacewater, groundwater, stormwater, or land, or relating to the manufacture, processing, distribution, use, treatment, storage, disposal, transport, or handling of pollutants, contaminants, or hazardous or toxic substances, materials, or wastes, whether solid, liquid, or gaseous in nature; and b. All requirements pertaining to the protection of the health and safety of employees or the public. B. General Indemnification. USER DOES HEREBY RELEASE, INDEMINFY, REIMBURSE, DEFEND, AND HOLD HARMLESS THE CITY, ITS OFFICERS, AGENTS, AND EMPLOYEES, FROM AND AGAINST ANY AND ALL LIABILITY, CLAIMS, SUITS, DEMANDS, OR CAUSES OF ACTIONS WHICH MAY ARISE DUE TO ANY LOSS OR DAMAGE TO PERSONAL PROPERTY, OR PERSONAL INJURY, AND/OR DEATH OCCURRING AS A CONSEQUENCE OF THE USER'S OPERATOINS UNDER THIS AGREEMENT, WHEN SUCH INJURIES, DEATH, OR DAMAGES ARE CAUSED BY THE SOLE NEGLIGENCE OF USER, ITS OFFICERS, AGENTS, EMPLOYEES, OR CONTRACTORS, OR TO THE EXTENT CAUSED BY THE JOINT NEGLIGENCE OF USER, ITS OFFICERS, AGENTS, EMPLOYEES, OR CONTRACTORS AND ANY OTHER PERSON OR ENTITY, EXCLUDING THE CITY, ITS OFFICERS, AGENTS, AND EMPLOYEES. C. Environmental Indemnification. USER DOES HEREBY RELEASE, INDEMNIFY, DEFEND, REIMBURSE AND HOLD HARMLESS THE CITY, ITS OFFICERS, AGENTS, AND EMPLOYEES, AGAINST ANY AND ALL ENVIRONMENTAL DAMAGES AND THE VIOLATION OF ANY AND ALL ENVIRONMENTAL REQUIREMENTS RESULTING FROM USER'S OPERATIONS UNDER THIS AGREEMENT WHEN SUCH ENVIRONMENTAL DAMAMGES OR VIOLATION OF USER, ITS OFFICERS, AGENTS, EMPLOYEES, OR Use Agreement for Environmental Sampling with Chevron Products Company,Chevron Facility#61320892 Page 5 of 10 CONTRACTORS, OR TO THE EXTENT CAUSED BY THE JOINT ACT OR OMISSION OF USER, ITS OFFICERS, AGENTS, EMPLOYEES, OR CONTRACTORS AND ANY OTHER PERSON OR ENTITY, EXCLUDING THE CITY, ITS OFFICERS, AGENTS, AND EMPLOYEES. D. The obligations of the User under this section shall include, but not be limited to, the burden and expense of defending all claims, suits and administrative proceedings (with counsel reasonably approved by the City), even if such claims, suits or proceedings are groundless, false, or fraudulent, and conducting all negotiations of any description, and paying and discharging, when and as the same become due, any and all judgments,penalties or other sums due against such indemnified persons. E. Upon learning of a claim, lawsuit, or other liability that User is required hereunder to indemnify, City shall provide User with reasonable timely notice of same. F. The obligations of the User under Section 7 shall survive the expiration or termination of this agreement. 8. INSURANCE A. During the term of this agreement and before installation, User shall maintain the following insurance coverage and User shall provide such insurance to City and the respective policies thereof shall cover all risks related to the use and occupancy of the . right-of-way and other City property and all other risks associated with this use agreement: Commercial General Liability Insurance: $1,000,000.00 per occurrence combined single limit for bodily injury and property damage; $2,000,000.00 aggregate. B. User shall require its contractors to maintain the following insurance coverage: 1. Commercial General Liability Insurance $1,000,000.00 per occurrence $2,000,000.00 aggregate. 2. Automobile Liability Insurance: $1,000,000.00 each accident on combined single limit basis, or $250,000.00 property damage $500,000.00 bodily injury per person per occurrence $2,000,000.00 aggregate. Use Agreement for Environmental Sampling with Chevron Products Company,Chevron Facility#61320892 Page 6 of 10 Coverage shall be on"any auto", including leased, hired, owned,non- owned and borrowed vehicles. 3. Environmental Impairment Liability Insurance: $5,000,000.00 per occurrence $10,000,000.00 aggregate 4. Workers' Compensation Insurance a. Statutory limits for Workers' Compensation; and b. Employer's Liability $100,000.00 in each of the following three categories: $100,000.00 each accident; $100,000.00 disease-policy limit; and $500,000.00 disease-each employee. C. All policies shall contain the following endorsements: 1. The City of Fort Worth, its Officers and Employees shall be named as an additional insured on all policies in respect to the environmental sampling and the operations under this agreement; 2. City shall be notified a minimum of thirty (30) days prior to the cancellation or non-renewal of, or material changes to said policies; and 3. All policies shall be endorsed with waivers of subrogation in favor of City. D. The insurers for all policies shall be licensed to do business in the State of Texas and must have a minimum rating of ANII in the current A.M. Best Key rating Guide or have reasonably equivalent financial strength and solvency to the satisfaction of the Director of Risk Management for the City of Fort Worth. E. Programs of self-insurance in lieu of commercial insurance policies shall be approved by the Risk Manager, and, as applicable, pre-approved by the Texas Department of Insurance. F. The deductibles or self insured retention (SIR) affecting the insurance coverage required shall be acceptable to the Risk Manager of the City of Fort Worth in regards to asset value and stockholders' equity. In lieu of traditional insurance, alternative coverage maintained through insurance pools or risk relations groups must also be approved. Use Agreement for Environmental Sampling with Chevron Products Company,Chevron Facility#61320892 Page 7 of 10 G. User shall provide City with certificates of insurance documenting User's and User's contractor's coverage as outlined above prior to commencing any operations under this agreement. Certificates shall be submitted to the Director of Environmental Management. H. Failure on part of City to request documentation of insurance required herein shall not be construed as a waiver of the requirement for same. I. The City may revise insurance requirements specified herein, at its sole discretion, to protect its interests, giving ample prior notice to User. 9. FEES User agrees to pay a fee of $100.00 to City to offset the City's cost of regulating and monitoring use agreement activities. 10. NOTICE Any notice or communication required in the administration of this agreement shall be sent as follows: If to City: If to User: Brian Boerner, Director Jeff Cosgray Dept. of Environmental Mgt. Chevron Products Co. City of Fort Worth P. O. Box 4256 1000 Throckmorton Houston, TX 77210 Fort Worth, TX 76102-6311 11. TERMINATION In the event User defaults in the performance of any of its obligations under this agreement or misrepresents to the City a material fact, the City shall have a right to terminate this agreement upon giving the User written notice describing the breach or omission in reasonable detail. The User shall have a ten (10) day period commencing upon the date of notice of default in which to effect a cure. If the user fails to effect a cure within the aforesaid ten (10) day period, the City may terminate this agreement by written notice to User. Upon termination, the User shall be released from all contractual obligations to the City except that all of the User's duties, obligations and liabilities set forth in Section 5 and 7. Section 5, "Restoration of Property" shall survive for the later of a period of two years after the termination of this agreement or until the property is restored and such restoration complies with Use Agreement for Environmental Sampling with Chevron Products Company,Chevron Facility#61320892 Page 8 of 10 Section 5 of this agreement. The duties, obligations and liabilities as set forth in Section 7, "Indemnification"shall survive the expiration or termination of this agreement. 12. GOVERNING LAWS It is mutually agreed and understood that this agreement is made and entered into by City and User with reference to the existing Charter and Ordinances of City, the laws of the State of Texas, and the laws of the United States, which govern all matters affecting this agreement, and User agrees to comply fully with all the provisions of same. 13. ENTIRETY This agreement constitutes the entire agreement by the parties hereunder, and any prior or contemporaneous coral or written agreements shall be void. This agreement may be amended or changed only by the written agreement signed by both parties. 14. SEVERABILITY In case any one or more of the provisions contained in the agreement shall for any reason be held to be invalid, illegal, or unenforceable in any respect, such invalidity, illegality, or unenforceability shall not affect any other provision of this agreement, and this agreement shall be construed as if such invalid, illegal, or unenforceable provisions had never been contained herein. 15. VENUE Venue of any suit or cause of action under this contract shall lie in Tarrant County, Texas. 16. AUTHORIZATION The undersigned officer and/or agents of the parties hereto are properly authorized officials and have the necessary authority to execute this Agreement on behalf of the parties hereto, and each party hereby certifies to the other that any necessary resolutions extending such authority have been duly passed and are now in full force and effect. Use Agreement for Environmental Sampling with Chevron Products Company,Chevron Facility#61320892 Page 9 of 10 IN WITNESS THEREOF, the parties hereto have executed this agreement in triplicate originals in Tarrant County,Texas. C I+EV904)PN,60aCTS 601160,9kV, S 5-rek OF CH,C0?441 CIT"A FORT W T By: r By: 1 ,(0,j - • J.G. S11mit1skl Charles Boswell Title: AftrnW-in-fact Assistant City Manager CORPORATE SEAL: FORMAL REQUEST FOR X BE BOATI PROVED r er Director, Department of Environmental Management WITNESS: OV TO FORM: (Signature) Assistana6me Print name: AT S a- - loria Pearso , City Secretary 7-1,3-61 NO M&C REQUIRED RO WUA20010102 V.7 Use Agreement for Environmental Sampling with Chevron Products Company,Chevron Facility#61320892 Page 10 of 10 tx— � wANEHasE cAsaw[ $�/ ptsa /' Q iAMK-10A TAN%-107 0 y y"\ t l CON7AwYEMT/I 04 1RIla{ CASOUNE CASOUNC Z ♦ ��SINY i TANK-101 TANK-10I _ MH CONTAINMENT/7 r\ TRAM!Y% TRANS 111% CONTUNYENT/! TANK-0 i ! ISS S. 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N-1NR-0$ THIS PROPCRIT OWNED CONTAKAIEMT S 66BY OTHERS /MP iGWA1CR wAid p[YE I kal ATERYR-/� _SCAiOR lII/ T4R1 � �10 BRENNAN AVENUE CITY OF FORT WORTH LPST FACIUTY X N O S(,Ss .wd� 20' LEGEND LEGEND: X , ,4reN, io be- 6wf:c aR� 2M BNEN[NAN H fACI Itt j T 00"4 1� Chevron FORT WORTH TE)(AS 5� dYW-t ALIM wONtDR 172082 2 uA LD $ Y . `11 N CENTRK REOK7N J �••�..� PRO-Eft"UNC - M u 1'.170' 0114 1/7000 1 I � 517E MAP Xf+l �bI Harding Lawson Associates ■ May 3,2000 HLA Project No. 49857.1 Via Facsimile (817) 871-6359 and U.S. Mail Mr. Brian Boerner City of Fort Worth Environmental Manager Environmental Management Department Lower Level City Hall 1000 Throckmorton Street Fort Worth,Texas 76102-6311 Informal Request for Environmental Use Agreement for Installation of Four Geoprobe Borings/Piezometers Along Cold Spring Road at Intersection of Brennan Avenue City of Fort Worth,Tarrant County,Texas Dear Mr. Boerner: Harding Lawson Associates(HLA) is requesting that an Environmental Use Agreement be granted to install four Geoprobe soil borings to be converted into temporary piezometers. HLA is requesting the Environmental Use Agreement to install these borings/piezometers within City of Fort Worth right-of-way (ROW)along the eastern side of Cold Spring Road near the intersection of Brennan Avenue. The purpose of these borings/piezometers is to evaluate the potential for down gradient off-site petroleum hydrocarbon impacts to subsurface soils and/or groundwater as a result of a potential petroleum hydrocarbon release on our client's property. These borings/piezometers will be plugged and abandoned immediately following the collection of groundwater samples. The drilling, sampling, and plugging and abandonment activities should be completed within a ten-hour time frame. A copy of the work plan and a map showing the proposed Geoprobe boring/piezometer locations have been included as an attachment to this letter to fulfill the requirements for an Informal Request for Sub-Surface Environmental Sampling as stated in Section 12.5-145 of the Code of The City of Fort Worth, Texas,Chapter 12.5 Environmental Protection and Compliance Article 1, Administration and Enforcement Division 4, Environmental Use Agreements. Upon acceptance of this Informal Request for Sub-Surface Environmental Sampling by The City of Fort Worth Environmental Management Department, HLA will submit a Formal Request for Sub-Surface Environmental Sampling for review and/or approval. HLA appreciates your prompt response to this matter. If you have any questions or require additional information regarding this transmittal, please contact Mr. Bryan Gay at(713)974-9690 or myself at(7 13) 974-9663. Sincerely, HARDING LAWSON ASSOCIATES Chad E. Vowell Bryanay, C PP�1 Staff Environmental Scientist 11 Senior Envir mental Scientist Attachments City of Forth Worth Access Letter I.doc ©* April 7, 2000 Mr. Jeff Cosgray Project Manager Chevron Products Company 5959 Corporate Drive Houston, Texas 77210 Workplan/Cost Proposal Subsurface Assessment and Corrective Action Plan Development Chevron Products Company Ft. Worth Terminal Chevron Facility #61320892 Fort Worth, Texas TNRCC Industrial Hazardous Waste No. 31862 Dear Mr. Cosgray: Harding Lawson Associates (HLA) is pleased to submit this Workplan/Cost Proposal for a Subsurface Assessment and development of a Corrective Action Plan for the above-referenced site located in Fort Worth, Tarrant County, Texas (the Site). The Subsurface Assessment (SA) is intended to further evaluate the previously identified subsurface petroleum hydrocarbon impacts that are apparently related to various historic releases from potential on and off-site sources. The development of the Corrective Action Plan (CAP) will involve evaluation of all available data, the performance of a preliminary risk evaluation, and selection of the best alternative for achieving regulatory concurrence. BACKGROUND INFORMATION HLA reviewed a variety of documents in Chevron's files for the purpose of developing this Workplan/Cost proposal. These reports included: • Preliminary Hydrogeologic Investigation and 1998 Annual Groundwater Monitoring Report', dated February 1999, • 1997 Annual Groundwater Monitoring Report and Supplemental Site Information, dated February 1998, • A proposal to perform a soil gas survey using Gore-Sorber technology, • Various documents of correspondence between Chevron and the TNRCC discussing the NOV and TNRCC's ultimate determination that the NOV had been resolved with the exception of the groundwater impacts, • A Notice of Violation (NOV) dated November 29, 1993, • Design drawings and specifications for the remedial system to be installed at the site, • A Phase I Site Investigation Report for the Fort Worth Pipeline Terminal dated March 16, 1988. 'HLA did perform a cursory review of all annual groundwater monitoring reports in Chevron's files,however,because the data are carried forward and summarized in each succeeding report,only the most recent report was reviewed in detail. WPCPtnrcc.DOC April 7, 2000 Mr. Jeff Cosgray Project Manager Chevron Products Company Page 2 Based on the review of the documents, specifically the groundwater monitoring data, HLA has made the following observations: • Phase-separated hydrocarbons (PSH) are still present in many of the on-site wells, however, the number of wells exhibiting PSH appears to vary, possibly seasonally and has exhibited an overall decrease with time, • Dissolved concentrations of petroleum hydrocarbons in the majority of the wells have exhibited a steady decrease over time, including those that, at times have exhibited PSH, • According to previous reports,. dissolved concentrations of petroleum hydrocarbons have migrated off-site in the southeast and southwest directions. However, these concentrations may be representative of the adjacent City of Fort Worth leaking underground storage tank (LUST) facility to the south. The concentrations appear to have decreased in the southeast direction but increased in the southwest direction, and • It appears that the full nature and extent of the groundwater impacts have not been fully defined. Therefore, in general, it appears that the petroleum hydrocarbon concentrations continue to fluctuate and many of the wells exhibit varying thicknesses of PSH. In addition, petroleum hydrocarbons may have impacted off-site properties. However, according to historical reports, the adjacent properties to the west and south have already been impacted by petroleum hydrocarbons associated with activities conducted on those adjacent facilities. Our discussion of the performance of individual wells will focus on those wells with the potential to impact the recommendations for further action. Perimeter Wells MW-10 Petroleum hydrocarbon concentrations have decreased slightly in this well although, they have exhibited concentrations in the same order of magnitude over time. Based on the concentrations observed, there is the potential that groundwater impacts have migrated to the west. MWA 9 This well has only been in place since July 1998. It was sampled twice and exhibited an increase in petroleum hydrocarbons. Given that this well is in the southwest corner of the facility and is close to MW-10, the potential exists for impacts to have migrated off-site and that the source of impacts in this well is the same as that in MWA 0. MW-3 WPCPtnrcc.DOC April 7, 2000 Mr. Jeff Cosgray Project Manager Chevron Products Company Page 3 This well, also along the Sites southern boundary, has exhibited a general drop in dissolved- phase concentrations. However, most recently it has exhibited PSH, possibly due to the drought conditions. Given its proximity to the Site's boundary, it is possible that impacts are migrating towards the southern property boundary. MW-2 This well also located along the Site's southern boundary, has exhibited a general decrease in petroleum hydrocarbon concentrations. This possibly resu,ted from-the fact that this well is not directly downgradient from any of the potential sources of environmental impacts (aboveground storage tanks) at the Site. In addition, this well has exhibited concentrations of chlorinated hydrocarbons above the Standard No. 2 Groundwater target levels under the Texas Risk Reduction Rules (RRR). MW-15 This well, located along the Site's southern boundary has typically exhibited a decrease in petroleum hydrocarbon concentrations. However, in the last two monitoring events, increases in impacts were observed. This possibly was caused due to the drought conditions that existed during the last two previous monitoring events. However, given this well's proximity to the Site boundary, it is possible that impacts may exist off-site to the south of this well. MW-9 This well exhibited a re-appearance of PSH in the last two monitoring events. This possibly was a result of the drought in the area. MW-13 & MW-14 Both these wells have exhibited high concentrations of petroleum hydrocarbons in the past and continue to exhibit PSH. Given their proximity to the Site's boundary, it is possible that impacts, possibly PSH, are present under Brennan Avenue and Cold Springs Road. MW-5 and MW-17 These two wells typically have not exhibited impacts from petroleum hydrocarbons possibly indicating that the impacts in the groundwater originated from sources downgradient of these wells. All the aboveground storage tanks at the Site are in fact downgradient of these wells. MW-20 WPCPtnrcc.DOC April 7, 2000 Mr. Jeff Cosgray Project Manager Chevron Products Company Page 4 Monitor well MW-20, the only well that has been installed off-site across Brennan Street, also exhibited signs of petroleum hydrocarbon impacts. Impacts associated with this monitor well may be associated with the City of Fort Worth LPST facility located at the corner of Brennan Street and Spring Road. SCOPE OF SERVICES HLA's Scope of Work (SOW) for the SA has been developed to further evaluate the subsurface hydrocarbon impacts in the areas at the Site where subsurface hydrocarbon impacts have been previously identified. In addition, determine if there is any potential migration or commingling of petroleum hydrocarbon constituents associated with the Site and the City of Fort Worth LPST facility located down gradient to the south. The SOW for the SA and CAP to be performed by HLA will include the following tasks: • Task 1 —Preparation of the site-specific health and safety plan • Task 2— Field sampling and laboratory analysis • Task 3—Data Interpretation • Task 4—SA Letter Report Preparation • Task 5—Preliminary Risk Evaluation and Corrective Action Plan Each task is further described below. Task 1 — Preparation of a Site-Specific Health and Safety Plan HLA will prepare a health and safety plan for the field program proposed for the Site. The Health and Safety plan will address the following items: • Designation of key personnel and safety officers and identification of their individual responsibilities and duties; • Identification of potential chemical, physical, and biological hazards associated with the field sampling program; • Identification of work zones; • Identification of decontamination procedures; and • Identification of personnel protective equipment (PPE) and emergency procedures. Task 2 — Field Sampling and Laboratory Analysis The SA will focus on further evaluation of subsurface hydrocarbons within the previously identified petroleum hydrocarbon plume and will attempt to achieve vertical and horizontal delineation of subsurface hydrocarbons both on and off-site. HLA will not initiate field work WPCPtnrcc.DOC April 7, 2000 Mr. Jeff Cosgray Project Manager Chevron Products Company Page 5 until notice to proceed has been given by Chevron. It is assumed that Chevron will obtain permission from the adjacent landowner (City of Fort Worth) for site activities. The SA will include the following activities: • Four soil borings will be advanced to a total depth of approximately 30 feet below ground surface (bgs) utilizing a truck-mounted direct push Geo-prober"' rig at the locations presented in attached Figure 9. These soil borings will be used to evaluate the horizontal petroleum hydrocarbon impacts to soil and..groundwater down gradient of monitor well MW- 13, along Cold Springs Road. • Each boring will be sampled continuously from the ground surface to the termination depth. Soil samples will be screened with a photoionization detector (PID) for volatile organic vapors. Soil samples will also be inspected for visual evidence of impacts such as oil staining or discoloration A maximum of three soil samples will be selected from each boring for submittal to the laboratory from: the zone exhibiting the maximum PID readings and visual evidence of hydrocarbons; immediately above the water table surface; and from the total depth of the boring. Only two samples will be collected from a boring if any of the proceeding two criteria occur at the same depth. Up to 12 soil samples will be selected for initial laboratory analysis for total petroleum hydrocarbons (TPH) by TNRCC-approved TX Method 1005, volatile organic compounds (VOCs) by EPA Method 8260, semi-volatile organic compounds (SVOCs) by EPA Method 8270. SVOC soil analysis will only be performed if TPH analytical results from the TNRCC-approved TX Method 1005 analysis are greater than 5 parts per million (ppm) for C-10 to C-28 range hydrocarbons. The remaining soil samples will be archived for possible future analysis based on the initial analytical results. A sample will be collected from an area not impacted by hydrocarbons and analyzed for geotechnical parameters (fraction organic carbon, intrinsic permeability, effective porosity, dry bulk density, and water content) to support a limited risk evaluation for the site. This laboratory analytical plan may be amended based on the recommendations of Dr. Atul Salhotra with Risk Assessment and Management Group, Inc. (RAM) in order to provide the optimum data set for performing a risk assessment at the site. Laboratory analysis will be performed on a standard turn-around basis (7 working days). • The four soil borings will be converted to 1-inch diameter piezometers. • The four piezometers will be developed by purging at least three well volumes of water to allow representative groundwater to enter the sampling point and to remove sand and silt particles that may have been introduced during the drilling and piezometer installation activities. Piezometers will be removed and the bore-holes will be grouted to the surface after groundwater sampling has been completed. • Groundwater samples collected from the newly-installed piezometers will be analyzed in the laboratory for TPH by TNRCC-approved TX Method 1005, VOCs by EPA Method 8260, WPCPtnrcc.DOC April 7, 2000 Mr. Jeff Cosgray Project Manager Chevron Products Company Page 6 SVOCs by EPA Method 8270. SVOC groundwater analysis will only be performed if TPH analytical results from the TNRCC-approved TX Method 1005 analysis are greater than 5 ppm for C-10 to C-28 range hydrocarbons. • Groundwater samples will be collected using low-flow sampling techniques from existing Site monitor wells MW-1 though MW-20. Groundwater samples collected from these monitor wells will be analyzed in the laboratory for TPH by TNRCC-approved TX Method 1005, VOCs by EPA Method 8260, SVOCs by EPA Method 8270. SVOC groundwater analysis will only be performed if TPH analytical results from the TNRCC-approved TX Method 1005 analysis are greater than 5 ppm for C-10 to C-28 range hydrocarbons. Each groundwater sample will also be analyzed for RCRA Metals using EPA Method 6020. Groundwater samples will not be collected from wells exhibiting measurable levels of PSH greater than 0.01 feet. Three of the monitoring wells (one up gradient, one down gradient, and one within the known hydrocarbon impacted area) will also be sampled for natural attenuation parameters (Dissolved Oxygen [DO], Oxidation Reduction Potential, pH, Temperature, Ferrous Iron [Fe II], Nitrate, and Sulfate). The natural attenuation monitoring will be completed using low-flow sampling techniques. This laboratory analytical plan may be amended based on the recommendations of Dr. Atul Salhotra with RAM in order to provide the optimum data set for performing a risk assessment at the site. • Groundwater samples will also be collected using low-flow sampling techniques from existing monitor wells MW-7, MW-8, MW-10, and MW-12 located on the adjacent City of Fort Worth property. Groundwater samples collected from these monitor wells will be analyzed in the laboratory for TPH by TNRCC-approved TX Method 1005, VOCs by EPA Method 8260, SVOCs by EPA Method 8270. SVOC groundwater analysis will only be performed if TPH analytical results from the TNRCC-approved TX Method 1005 analysis are greater than 5 ppm for C-10 to C-28 range hydrocarbons. • In addition, historical groundwater analytical data associated with monitor well located on the adjacent City of Fort Worth property will be reviewed and incorporated into the SA Report. • Newly installed boring locations, existing monitor wells associated with the Site, and monitor wells MW-7, MW-8, MW-10, and MW-12 located on the adjacent City of Fort Worth property will be surveyed for top of casing (TOC) and ground surface elevation. This survey data will be used to facilitate evaluation of the site lithology, groundwater flow direction, and gradient. • A visual inspection of the vicinity of the Site will be performed to identify potentially sensitive receptors as well as conducting a formal search for water wells within '/z mile of the site and utilities in the immediate vicinity of the Site. • This assessment will also include an evaluation of the effectiveness of the current on-site PSH recovery system. Task 3— Data Interpretation WPCPtnrcc.DOC April 7, 2000 Mr. Jeff Cosgray Project Manager Chevron Products Company Page 7 Data collected during the field program will be evaluated and interpreted. A summary of the data evaluation activities is presented below: A cursory quality assurance/quality control review will be performed for laboratory data. Surrogate recoveries, matrix spike recoveries, laboratory control spike recoveries, method blank results, and sample holding times will be reviewed for compliance with analytical method quality control criteria. Task 4—SA Letter Report Preparation Verbal project update will be provided upon completion of the fieldwork, receipt and review of the laboratory analytical data, and completion of the remedial options evaluation. Recommendations for additional assessment to further characterize the site or support evaluation of remedial options may also be provided as part of the project updates. HLA will prepare a written report (letter report) that includes a summary of all previous subsurface investigation data as well as a description of the activities and findings associated with the subsurface assessment. In addition, HLA will review all available material and data for the adjacent LPST sites located to the west and south of the subject property. Findings from these historical data reviews will also be incorporated into HLA's final letter report. If this data is not available or inconclusive, HLA will recommend the sampling of select monitor wells located on these adjacent LPST facilities. Sampling of these additional wells, if necessary, will be proposed under a separate cover. Task 5— Preliminary Risk Assessment and Corrective Action Proposal Cumulative site assessment data will be forwarded to Dr. Atul Salhotra with RAM for preliminary risk evaluation. Based on the results of the preliminary risk evaluation, HLA will evaluate the optimal actions for achieving closure of the Site with the TNRCC. It is anticipated that limited corrective actions such as free product recovery combined with a complete Risk Based Corrective Action Assessment will likely be the best alternative. The costs for the preliminary risk evaluation include screening level transport modeling and conservative risk calculations but do not include a comprehensive Risk-Based Corrective Action assessment. Relevant aspects of the preliminary risk evaluation and corrective action analysis will be included in the Corrective Action Plan. It is anticipated that the report will consist of a brief letter summary followed by maps and tables illustrating the analysis, proposed corrective actions, and rough cost estimates for completing the corrective actions. PROJECT COST ESTIMATE HLA proposes to perform the Subsurface Assessment described in this proposal on a time and materials basis for an estimated cost of$24,404.68. A detailed itemization of these costs is provided in attached Tables 1 and 2. PROJECT SCHEDULE WPCPtnrcc.DOC April 7, 2000 Mr. Jeff Cosgray Project Manager Chevron Products Company Page 8 Upon approval of this work plan and budget estimate by Chevron, a project schedule will be developed by Chevron and HLA personnel to meet Chevron's goals for timely completion of the site assessment. LIMITATIONS The scope of work and cost estimate provided in this letter was developed based on the following assumptions and limitations: • Work days will be Monday through Friday, assuming.10 hour work days; • First incidence of groundwater will be encountered onsite at a depth within 25 feet of the ground surface; • Laboratory analysis will be performed on a 7 working day turn-around basis; • Chevron Products Company will provide ready access to sampling locations including obtaining permission from the landowner; • Fieldwork will be conducted using Level D PPE. Additional costs will be incurred if a PPE upgrade is required to conduct the field work; • Costs have not been included for delays due to access, site operations, inclement weather, or other conditions beyond HLA's control; • HLA will prepare one draft version of the report for Chevron's review and one final version of the report incorporating one set of Chevron's comments. CLOSING Harding Lawson Associates appreciates the opportunity to provide this proposal to Chevron Products Company and looks forward to working with you on this project. If you have any questions concerning this proposal or require additional information, please contact Bryan Gay at (713) 974-9690. Sincerely, HARDING LAWSON ASSOCIATES Bryan Gay, CAPM Russell Weigand, CAPM Senior Environmental Scientist Associate Hydrogeologist JBG/RW/jbg WPCPtnrcc.DOC April 7, 2000 Mr. Jeff Cosgray Project Manager Chevron Products Company Page 9 Attachments: Figure 1 -Site Map WPCPtnrcc.DOC WAREHOUSE w-S i Q GASOIIN[ NK-1 / TANK-10. TANK-101 O CONTAINMENT R I /1l TRVCK GASOLINE CASo1JNE V TANK-lot TANK-1o7 Z • REPNR 910P w=. CONTAINMENT/TR SAN W% TRANS 111% CONTAINMENT/6 TAXK-6 TµK-9 ! CONTAINMCNT/1 w-a �� �J :I '^ STORE HOUSE VI TANK-110 TANK-111 u1 Q __--- TEI'I—AI OFFICE VRU F_'•-1Aw-T J roXtA.MENt/. rrt� ��VV -u f 0 LOAD RACKS C= ANIFOE U YA AREA® I I 1 AREA 0 3 l GASOLINE GASQRIC ,jl TAMK-120 TANK-119 w�, y $ I THIS RY OTHERS+MICU CONTAINMENT/5 SE.M.CNT SUMP WATER WATER WATER DIESEL W ANK to AHK 1 AHK-15 ANK-16 I.., [] pl/WATER Z wS ILZATER 1 BRENNAN AVENUE u CITY OF FORT WORTH LPST FACILITY s 0 5T 0 120' LEGEND � 1 PaOa o SIX CHEVRON TERMINAL fACILIfY .1 7 00a"'0 t0C'`1i0M Chevron 1525 BRENNA_N j FORT WORTH. Tf%AS _ -1 01 1320892 Loc.,pH CENTRAL REGION � �•.�..� PaOP[an la[ .cNf:1'�I19• 0+1[:1/7000 HHN d. i1 SITE YAP �x ►giT C Harding Lawson Associates 0 ■ . � .� • � May 9,2000 HLA Project No.: 49857.1 Ms. Deena Depalma City of Fort Worth Environmental Management Department Lower Level City Hall 1000 Throckmorton Street Fort Worth, Texas 76102 RE: Formal Request for Environmental Use Agreement for Installation of Four Geoprobe Borings/Temporary Piezometers Along Cold Spring Road at Intersection of Brennan Avenue City of Fort Worth, Tarrant County, Texas Dear Ms. Depalma: Harding Lawson Associates(HLA) is presenting this Formal Request for an Environmental Use Agreement based on your acceptance of the Informal Request for an Environmental Use Agreement submitted by HLA to your department on May 3, 2000. As stated in the Informal Request, HLA is requesting that an Environmental Use Agreement be granted to install four Geoprobe borings to be converted into temporary piezometers within the City of Fort Worth right-of-way(ROW)along the eastern side of Cold Springs Road near the intersection with Brennan Avenue in the City of Fort Worth, Tarrant County, Texas. The purpose of these borings/piezometers is to evaluate the potential for down-gradient off-site petroleum hydrocarbon impacts to subsurface soils and/or groundwater as a result of a petroleum hydrocarbon release on our client's property. The boring/piezometer locations are shown in the Site Map associated with the attached Work Plan. HLA proposes to use a Geoprobe T11 (direct-push)type drilling rig to install the four soils borings. Split-spoon soil sampling devices will be utilized to continuously collect soil samples from each of the borings. Following the completion of each boring, the boring will be converted into a temporary piezometer by inserting one-inch slotted and solid PVC pipe into the borehole to facilitate the collection of a groundwater sample. Groundwater samples will be collected using a peristaltic pump and disposable bailers. After the groundwater sampling activities have been completed, each borehole will be plugged and abandoned according to TNRCC regulations. HLA has contracted Groundwater Monitoring, Inc located in Grand Prairie, Texas to perform the drilling work. HLA anticipates that all drilling, sampling, and plugging and abandonment activities can be completed in one(I) 10-hour work day. HLA proposes to perform the activities described above during the week between May 29, 2000 and June 2,2000. The exact day of drilling, sampling, and plugging and abandonment activities will be determined by the date that HLA obtains a signed Environmental Use Agreement. Mr. Bryan Gay, Senior Environmental Scientist .vith HLA, will serve as the project manager for this task. Mr. Gay can be contacted at(7 13) 789-8050. Mr. Chad Vowell, Staff Environmental Scientist with HLA, will oversee all of the field activities. Mr. Vowell can also be contacted at(7 13) 789-8050. E : Formal Request-City of Fort Worth.doc 0`"' _ May 9,2000 Ms. Deena Depalma Harding Lawson Associates City of Fort Worth Environmental Management Department Page 2 Attached to this Formal Request for an Environmental Use Agreement is the Work Plan containing specific information pertaining to boring locations, rationale, and sampling plan. To expedite the process, HLA has also included copies of our proof of insurance and records of communication pertaining to utility clearance. HLA will re-contact Dig-Tess and Texas One Call (Utility Locating Services)to renew the ticket numbersprior to the commencement of the proposed drilling activities. HLA appreciates your assistance in this matter. If you have any questions or require any additional information pertaining to this Formal Request for an Environmental Use Agreement,please do not hesitate to contact either Mr. Bryan Gay or myself at(713) 789-8050. Sincerely, HARDING LAWSON ASSOCIATES Chad E. Vowel] Bryan y, CA(ent)Scientist Staff Environmental Scientist II Senior nviron Attachments Formal Request-City of Fort Worth.doc April 7, 2000 Mr. Jeff Cosgray Project Manager Chevron Products Company 5959 Corporate Drive Houston, Texas 77210 Workplan/Cost Proposal Subsurface Assessment and Corrective Action Plan Development Chevron Products Company Ft Worth Terminal Chevron Facility #61320892 Fort Worth, Texas TNRCC Industrial Hazardous Waste No. 31862 Dear Mr. Cosgray: Harding Lawson Associates (HLA) is pleased to submit this Workplan/Cost Proposal for a Subsurface Assessment and development of a Corrective Action Plan for the above-referenced site located in Fort Worth, Tarrant County, Texas (the Site). The Subsurface Assessment (SA) is intended to further evaluate the previously identified subsurface petroleum hydrocarbon impacts that are apparently related to various historic releases from potential on and off-site sources. The development of the Corrective Action Plan (CAP) will involve evaluation of all available data, the performance of a preliminary risk evaluation, and selection of the best alternative for achieving regulatory concurrence. BACKGROUND INFORMATION HLA reviewed a variety of documents in Chevron's files for the purpose of developing this Workplan/Cost proposal. These reports included: • Preliminary Hydrogeologic Investigation and 1998 Annual Groundwater Monitoring Report', dated February 1999, • 1997 Annual Groundwater Monitoring Report and Supplemental Site Information, dated February 1998, • A proposal to perform a soil gas survey using Gore-Sorber technology, • Various documents of correspondence between Chevron and the TNRCC discussing the NOV and TNRCC's ultimate determination that the NOV had been resolved with the exception of the groundwater impacts, • A Notice of Violation (NOV) dated November 29, 1993, • Design drawings and specifications for the remedial system to be installed at the site, • A Phase I Site Investigation Report for the Fort Worth Pipeline Terminal dated March 16, 1988. 'HLA did perform a cursory review of all annual groundwater monitoring reports in Chevron's files,however,because the data are carried forward and summarized in each succeeding report.only the most recent report was reviewed in detail. WPCPtnrcc.DOC April 7, 2000 Mr. Jeff Cosgray Project Manager Chevron Products Company Page 2 Based on the review of the documents, specifically the groundwater monitoring data, HLA has made the following observations: • Phase-separated hydrocarbons (PSH) are still present in many of the on-site wells, however, the number of wells exhibiting PSH appears to vary, possibly seasonally and has exhibited an overall decrease with time, • Dissolved concentrations of petroleum hydrocarbons in the majority of the wells have exhibited a steady decrease over time, including those that, at times have exhibited PSH, • According to previous reports; dissolved concentrations of petroleum hydrocarbons have migrated off-site in the southeast and southwest directions. However, these concentrations may be representative of the adjacent City of Fort Worth leaking underground storage tank (LUST) facility to the south. The concentrations appear to have decreased in the southeast direction but increased in the southwest direction, and • It appears that the full nature and extent of the groundwater impacts have not been fully defined. Therefore, in general, it appears that the petroleum hydrocarbon concentrations continue to fluctuate and many of the wells exhibit varying thicknesses of PSH. In addition, petroleum hydrocarbons may have impacted off-site properties. However, according to historical reports, the adjacent properties to the west and south have already been impacted by petroleum hydrocarbons associated with activities conducted on those adjacent facilities. Our discussion of the performance of individual wells will focus on those wells with the potential to impact the recommendations for further action. Perimeter Wells MW-10 Petroleum hydrocarbon concentrations have decreased slightly in this well although, they have exhibited concentrations in the same order of magnitude over time. Based on the concentrations observed, there is the potential that groundwater impacts have migrated to the west. MW-19 This well has only been in place since July 1998. It was sampled twice and exhibited an increase in petroleum hydrocarbons. Given that this well is in the southwest corner of the facility and is close to MW-10, the potential exists for impacts to have migrated off-site and that the source of impacts in this well is the same as that in MW-10. MW-3 WPCP1nrcc.D0C April 7, 2000 Mr. Jeff Cosgray Project Manager Chevron Products Company Page 3 This well, also along the Sites southern boundary, has exhibited a general drop in dissolved- phase concentrations. However, most recently it has exhibited PSH, possibly due to the drought conditions. Given its proximity to the Site's boundary, it is possible that impacts are migrating towards the southern property boundary. MW-2 This well also located along the Site's southern boundary, has exhibited a general decrease in petroleum hydrocarbon concentrations. This possibly resu,ted from the fact that this well is not directly downgradient from any of the potential sources of environmental impacts (aboveground storage tanks) at the Site. In addition, this well has exhibited concentrations of chlorinated hydrocarbons above the Standard No. 2 Groundwater target levels under the Texas Risk Reduction Rules (RRR). MW-15 This well, located along the Site's southern boundary has typically exhibited a decrease in petroleum hydrocarbon concentrations. However, in the last two monitoring events, increases in impacts were observed. This possibly was caused due to the drought conditions that existed during the last two previous monitoring events. However, given this well's proximity to the Site boundary, it is possible that impacts may exist off-site to the south of this well. MW-9 This well exhibited a re-appearance of PSH in the last two monitoring events. This possibly was a result of the drought in the area. MW-13 & MW-14 Both these wells have exhibited high concentrations of petroleum hydrocarbons in the past and continue to exhibit PSH. Given their proximity to the Site's boundary, it is possible that impacts, possibly PSH, are present under Brennan Avenue and Cold Springs Road. MW-5 and MW-17 These two wells typically have not exhibited impacts from petroleum hydrocarbons possibly indicating that the impacts in the groundwater originated from sources downgradient of these wells. All the aboveground storage tanks at the Site are in fact downgradient of these wells. MW-20 WPCPtnrcc.DOC April 7, 2000 Mr. Jeff Cosgray Project Manager Chevron Products Company Page 4 Monitor well MW-20, the only well that has been installed off-site across Brennan Street, also exhibited signs of petroleum hydrocarbon impacts. Impacts associated with this monitor well may be associated with the City of Fort Worth LPST facility located at the corner of Brennan Street and Spring Road. SCOPE OF SERVICES HLA's Scope of Work (SOW) for the SA has been developed to further evaluate the subsurface hydrocarbon impacts in the areas at the Site where subsurface hydrocarbon impacts have been previously identified. In addition, determine if there is any potential migration or commingling of petroleum hydrocarbon constituents associated with the Site and the City of Fort Worth LPST facility located down gradient to the south. The SOW for the SA and CAP to be performed by HLA will include the following tasks: • Task 1 —Preparation of the site-specific health and safety plan • Task 2—Field sampling and laboratory analysis • Task 3—Data Interpretation • Task 4—SA Letter Report Preparation • Task 5—Preliminary Risk Evaluation and Corrective Action Plan Each task is further described below. Task 1 —Preparation of a Site-Specific Health and Safety Plan HLA will prepare a health and safety plan for the field program proposed for the Site. The Health and Safety plan will address the following items: • Designation of key personnel and safety officers and identification of their individual responsibilities and duties; • Identification of potential chemical, physical, and biological hazards associated with the field sampling program; • Identification of work zones; • Identification of decontamination procedures; and • Identification of personnel protective equipment (PPE) and emergency procedures. Task 2 —Field Sampling and Laboratory Analysis The SA will focus on further evaluation of subsurface hydrocarbons within the previously identified petroleum hydrocarbon plume and will attempt to achieve vertical and horizontal delineation of subsurface hydrocarbons both on and off-site. HLA will not initiate fieldwork WPCPtnrcc.DOC April 7, 2000 Mr. Jeff Cosgray Project Manager Chevron Products Company Page 5 until notice to proceed has been given by Chevron. It is assumed that Chevron will obtain permission from the adjacent landowner (City of Fort Worth) for site activities. The SA will include the following activities: • Four soil borings will be advanced to a total depth of approximately 30 feet below ground surface (bgs) utilizing a truck-mounted direct push Geo-prober"" rig at the locations presented in attached Figure 9. These soil borings will be used to evaluate the horizontal ... petroleum hydrocarbon impacts to soil and„groundwater down gradient of monitor well MW- 13, along Cold Springs Road. ` • Each boring will be sampled continuously from the ground surface to the termination depth. Soil samples will be screened with a photoionization detector (PID) for volatile organic vapors. Soil samples will also be inspected for visual evidence of impacts such as oil staining or discoloration A maximum of three soil samples will be selected from each boring for submittal to the laboratory from: the zone exhibiting the maximum PID readings and visual evidence of hydrocarbons; immediately above the water table surface; and from the total depth of the boring. Only two samples will be collected from a boring if any of the proceeding two criteria occur at the same depth. Up to 12 soil samples will be selected for initial laboratory analysis for total petroleum hydrocarbons (TPH) by TNRCC-approved TX Method 1005, volatile organic compounds (VOCs) by EPA Method 8260, semi-volatile organic compounds (SVOCs) by EPA Method 8270. SVOC soil analysis will only be performed if TPH analytical results from the TNRCC-approved TX Method 1005 analysis are greater than 5 parts per million (ppm) for C-10 to C-28 range hydrocarbons. The remaining soil samples will be archived for possible future analysis based on the initial analytical results. A sample will be collected from an area not impacted by hydrocarbons and analyzed for geotechnical parameters (fraction organic carbon, intrinsic permeability, effective porosity, dry bulk density, and water content) to support a limited risk evaluation for the site. This laboratory analytical plan may be amended based on the recommendations of Dr. Atul Salhotra with Risk Assessment and Management Group, Inc. (RAM) in order to provide the optimum data set for performing a risk assessment at the site. Laboratory analysis will be performed on a standard turn-around basis (7 working days). • The four soil borings will be converted to 1-inch diameter piezometers. • The four piezometers will be developed by purging at least three well volumes of water to allow representative groundwater to enter the sampling point and to remove sand and silt particles that may have been introduced during the drilling and piezometer installation activities. Piezometers will be removed and the bore-holes will be grouted to the surface after groundwater sampling has been completed. • Groundwater samples collected from the newly-installed piezometers will be analyzed in the laboratory for TPH by TNRCC-approved TX Method 1005, VOCs by EPA Method 8260, WPCPtnrcc.DOC April 7, 2000 Mr. Jeff Cosgray Project Manager Chevron Products Company Page 6 SVOCs by EPA Method 8270. SVOC groundwater analysis will only be performed if TPH analytical results from the TNRCC-approved TX Method 1005 analysis are greater than 5 ppm for C-10 to C-28 range hydrocarbons. • Groundwater samples will be collected using low-flow sampling techniques from existing Site monitor wells MW-1 though MW-20. Groundwater samples collected from these monitor wells will be analyzed in the laboratory for TPH by TNRCC-approved TX Method 1005, VOCs by EPA Method 8260, SVOCs by EPA Method 8270. SVOC groundwater analysis will only be performed if TPH analytical results from the TNRCC-approved TX Method 1005 analysis are greater than 5 ppm for C-10 to C-28 range hydrocarbons. Each groundwater sample will also be analyzed for RCRA Metals using EPA Method 6020. Groundwater samples will not be collected from wells exhibiting measurable levels of PSH greater than 0.01 feet. Three of the monitoring wells (one up gradient, one down gradient, and one within the known hydrocarbon impacted area)will also be sampled for natural attenuation parameters (Dissolved Oxygen [DO], Oxidation Reduction Potential, pH, Temperature, Ferrous Iron [Fe II], Nitrate, and Sulfate). The natural attenuation monitoring will be completed using low-flow sampling techniques. This laboratory analytical plan may be amended based on the recommendations of Dr. Atui Salhotra with RAM in order to provide the optimum data set for performing a risk assessment at the site. • Groundwater samples will also be collected using low-flow sampling techniques from existing monitor wells MW-7, MW-8, MW-10, and MWA 2 located on the adjacent City of Fort Worth property. Groundwater samples collected from these monitor wells will be analyzed in the laboratory for TPH by TNRCC-approved TX Method 1005, VOCs by EPA Method 8260, SVOCs by EPA Method 8270. SVOC groundwater analysis will only be performed if TPH analytical results from the TNRCC-approved TX Method 1005 analysis are greater than 5 ppm for C-10 to C-28 range hydrocarbons. • In addition, historical groundwater analytical data associated with monitor well located on the adjacent City of Fort Worth property will be reviewed and incorporated into the SA Report. • Newly installed boring locations, existing monitor wells associated with the Site, and monitor wells MW-7, MW-8, MW-10, and MWA2 located on the adjacent City of Fort Worth property will be surveyed for top of casing (TOC) and ground surface elevation. This survey data will be used to facilitate evaluation of the site lithology, groundwater flow direction, and gradient. • A visual inspection of the vicinity of the Site will be performed to identify potentially sensitive receptors as well as conducting a formal search for water wells within '/� mile of the site and utilities in the immediate vicinity of the Site. • This assessment will also include an evaluation of the effectiveness of the current on-site PSH recovery system. Task 3— Data Interpretation WPCPtnrcc.DOC April 7, 2000 Mr. Jeff Cosgray Project Manager Chevron Products Company Page 7 Data collected during the field program will be evaluated and interpreted. A summary of the data evaluation activities is presented below: A cursory quality assurance/quality control review will be performed for laboratory data. Surrogate recoveries, matrix spike recoveries, laboratory control spike recoveries, method blank results, and sample holding times will be reviewed for compliance with analytical method quality control criteria. Task 4—SA Letter Report Preparation Verbal project update will be provided upon completion of the fieldwork, receipt and review of the laboratory analytical data, and completion of the remedial options evaluation. Recommendations for additional assessment to further characterize the site or support evaluation of remedial options may also be provided as part of the project updates. HLA will prepare a written report (letter report) that includes a summary of all previous subsurface investigation data as well as a description of the activities and findings associated with the subsurface assessment. In addition, HLA will review all available material and data for the adjacent LPST sites located to the west and south of the subject property. Findings from these historical data reviews will also be incorporated into HLA's final letter report. If this data is not available or inconclusive, HLA will recommend the sampling of select monitor wells located on these adjacent LPST facilities. Sampling of these additional wells, if necessary, will be proposed under a separate cover. Task 5 — Preliminary Risk Assessment and Corrective Action Proposal Cumulative site assessment data will be forwarded to Dr. Atul Salhotra with RAM for preliminary risk evaluation. Based on the results of the preliminary risk evaluation, HLA will evaluate the optimal actions for achieving closure of the Site with the TNRCC. It is anticipated that limited corrective actions such as free product recovery combined with a complete Risk Based Corrective Action Assessment will likely be the best alternative. The costs for the preliminary risk evaluation include screening level transport modeling and conservative risk calculations but do not include a comprehensive Risk-Based Corrective Action assessment. Relevant aspects of the preliminary risk evaluation and corrective action analysis will be included in the Corrective Action Plan. It is anticipated that the report will consist of a brief letter summary followed by maps and tables illustrating the analysis, proposed corrective actions, and rough cost estimates for completing the corrective actions. PROJECT COST ESTIMATE HLA proposes to perform the Subsurface Assessment described in this proposal on a time and materials basis for an estimated cost of$24,404.68. A detailed itemization of these costs is provided in attached Tables 1 and 2. PROJECT SCHEDULE WPCPtnrcc.DOC April 7, 2000 Mr. Jeff Cosgray Project Manager Chevron Products Company Page 8 Upon approval of this work plan and budget estimate by Chevron, a project schedule will be developed by Chevron and HLA personnel to meet Chevron's goals for timely completion of the site assessment. LIMITATIONS The scope of work and cost estimate provided in this letter was developed based on the following assumptions and limitations: • Work days will be Monday through Friday, assuming,10 hour work days; • First incidence of groundwater will be encountered onsite at a depth within 25 feet of the ground surface; • Laboratory analysis will be performed on a 7 working day turn-around basis; • Chevron Products Company will provide ready access to sampling locations including obtaining permission from the landowner; • Fieldwork will be conducted using Level D PPE. Additional costs will be incurred if a PPE upgrade is required to conduct the field work; • Costs have not been included for delays due to access, site operations, inclement weather, or other conditions beyond HLA's control; • HLA will prepare one draft version of the report for Chevron's review and one final version of the report incorporating one set of Chevron's comments. CLOSING Harding Lawson Associates appreciates the opportunity to provide this proposal to Chevron Products Company and looks forward to working with you on this project. If you have any questions concerning this proposal or require additional information, please contact Bryan Gay at (713) 974-9690. Sincerely, HARDING LAWSON ASSOCIATES Bryan Gay, CAPM Russell Weigand, CAPM Senior Environmental Scientist Associate Hydrogeologist JBG/RW/jbg WPCPtnrcc.DOC April 7, 2000 Mr. Jeff Cosgray Project Manager Chevron Products Company Page 9 Attachments: Figure 1 -Site Map WPCPtnrcc.DOC wARENousE �Mw-/ ♦ I Q cAsouNE acsEt / TwNK-IW Tµ%-IOJ O CONTAINMENT/2 I a TRYOI CASOUNC CASOUME TANK-101 TANK-102 Ate.. RVM11 9Ny ` �� V CONTAINMENT#'TRµ YS X 7Rµ3 1(1% IN CONTAMENT/6 I� E� �- CONTANMENT/1 `J •I (� STORE NWS[ TANK-I10 1ANK-111 r 0 TERMINAL OFFICE NiMeNTJ.JpMP-T '~` ~-10 CONTAINMENT EK ® isDw- A PIPELINE U 'LOA,RACKS ® MANIFOLD ARCA CASOLNC CASOIrN( I+ Tµ%-1 t0 TµK-119 4_1 TNIS vRNY[RTr O9NC0 CONTAINMENT 5 ~-11 -/ JS.000 qU BY OTHERS 17 SEa4ENT SUMP wAlEl wATCR WATG p[SEl z F OUINATER SEPARAT ♦ /) INK 7 rAl W IN �NNK.7 NA BRENNAN AVENUE CITY OF FORT WORTH LPST FACILITY a0 r+ N yr,M 0 120' �BG7B91� LEGEND 1111,TCl"l 11 111 a 2525 BRENNAN "°'°"°'°� Chevron � IONML tOCArKW FORT w RTH lE -1 KINE NOMIO/ CENTRAL REG" 1720892 ,fxu 1'.170' fWL•N/lOW :J SITE MAP HARDING LAWSON ASSOCIATES RECORD OF COMMUNICATION TELEPHONE REPORT PROJECT: Chevron-Fort Worth Terminal PROJECT NO.: 49857.1 FROM: Mr. Scott Neystel WITH: City of Fort Worth DATE: 5/9/00 Water Department TO: Mr. Chad Vowell WITH: Harding Lawson Associates TIME: 13:15 PHONE NO.: (817)212-2642 The following is our understanding of the subject matter covered in this conversation. I. Mr.Neystel stated that he was not aware of any potential problems associated with our proposed boring locations. 2. Mr.Neystel further stated that he would have someone from his department mark water and sewer line locations prior to the commencement of drilling activities by HLA. REPORTED BY: Chad E. Vowell CEV cc: Correspondence \\StreetTalk\FS_Project(_a,Houstorra Harding\40000\49857\HYDROGEO\Water Department TELEPHONE LOG.doc RECORD OF COMMUNICATION SUBSURFACE UTILITY LOCATION SERVICE Service: Texas One Call Phone Number: 1.800.245.4545 Customer Service Becky Representative: ext. 6502 Date of Call: 05/08/2000 Time of Call: 13:37 Date Job To Start: 05/22/2000 Ticket Number: 1296209 HLA Job: Chevron-Ft Worth Terminal(61320892) Job No.: 49857.1 Site Address: 2525 Brennan Ave., Ft.Worth, TX Site Contact: Lane Bowers(Operations Mgr)817.626.9789 Key Map Page: Page 63 Blocks E&X Area to be Marked: 200' South and 600' North of Intersection of Cold Spring Road and Brennan Ave,along both Sides of Cold Spring Road. Utilities to be Marked By Service Company Utility Owner/Operator Contacted Comments iT.U. Electric Company: ❑Yes ❑No Same as TXU Electric �— Same as TXU Gas I Lone Star Gas Company: �Yes ❑No � Southwestern Bell ❑Yes ❑No Telephone Company: Sammons Cable: ❑Yes D No !Any Other Utility Company MCI WorldCom, U.S. Sprint,TXU Electric&Gas, Level 3 !with a City Franchise or Communications,Qwest Communications, KOCH-Gateway, Lease: SWB, Chevron Pipeline, Explorer Pipeline,TXU Fuel j Company-Metropiex, IXC-Electra Communications, Pride Pipeline !Tarrant County Water ❑Yes Q No ❑NA Control and Improvement District: Tarrant County ❑Yes Q No ❑NA Department of Transportation and Public ;Works: Trinity River Authority: ❑Yes ❑No El NA 'Adjacent Property ❑Yes ❑No Q NA Owner(s): !Additional Information: i "-Key Map information provided by Deena Depalma with the City of Fort Worth I Environmental Management Department. i i I I Contacted By(HLA): Chad Vowell Name Signature Utility Contacts.xls Texas One Call 05/08/2000 4:17 PM RECORD OF COMMUNICATION SUBSURFACE UTILITY LOCATION SERVICE Service: Dig Tess Phone Number: 1.800.344.8377 Customer Service David Representative: Date of Call: 05/08/2000 Time of Call: 16:00 Date Job To Start: 05/22/2000 Ticket Number: 001293294 HLA Job: Chevron-Ft Worth Terminal(61320892) Job No.: 49857.1 Site Address: 2525 Brennan Ave., Ft.Worth, TX Site Contact: Lane Bowers(Operations Mgr)817.626.9789 Key Map Page: Page 63 Blocks E&X Area to be Marked: 200'South and 600'North of Intersection of Cold Spring Road and Brennan Ave, along both Sides of Cold Spring Road. Utilities to be Marked By Service Company I Utility Owner/Operator Contacted Comments T.U. Electric Company: El Yes ❑No Same as TXU Gas Lone Star Gas Company: ElYes ❑No Same as TXU Gas I Southwestern Bell El Yes ❑No Telephone Company: Sammons Cable: ❑Yes Q No ,Any Other Utility Company Chevron Pipeline, Explorer Pipeline,TXU Fuel Company, !with a City Franchise or IXC-Electra, SWB, Pride Pipeline, KOCH-Gateway,TXU i Lease: Gas& Electric, Sprint Long Distance, MCI WorldCom, Level 3 Communications,Qwest Communications Tarrant County Water ❑Yes E]No ❑NA Control and Improvement District: Tarrant County ❑Yes [Q No ❑NA Department of Transportation and Public Works: Trinity River Authority: ❑Yes ❑No 0 NA Adjacent Property ❑res ❑No O NA Owner(s): Additional Information: '-Key Map information provided by Deena Depalma with the City of Fort Worth !Environmental Management Department. Contacted By(HLA): Chad Vowell Name Signature Utility Contacts.xls Dig Tess 05/08/2000 4:17 PM HARDING LAWSON ASSOCIATES INSURANCE AND BONDING INFORMATION Main Insurance Agent: ABD Insurance and Financial Services 301 Island Parkway,Suite 300 Belmont,CA 94002-4110 Contact: Jeff Rodriguez Tel: (650) 508-4329 General Liability Carrier: Reliance National Indemnity Insurance Company Policy No.: NGB1721262 Limits: $1,000,000 bodily injury&property damage per occurrence/$2,000,000 aggregate Term: 7/1/99 to 7/1/00 Form: Occurrence policy Rating: A-XIII Automobile Liability Carrier: Reliance National Indemnity Insurance Company Policy No.: NKA 1722169 and NKA 1722170 Limits: $1,000,000 bodily injury& property damage per occurrence/aggregate Term: 7/1/99 to 7/l/00 Form: Occurrence policy Rating: A-XI°II Workers' Compensation/Employers Liability Carrier: United Pacific Insurance Company Policy No.: NWA2518309(Stop Gap in North Dakota,Ohio, Washington,West Virginia and Wyoming) Limits: WC: Statutory EL: $1,000,000 each accident Term: 7/1/99 to 7/l/00 Rating: A-XIII Contractor's Operations&Professional Services Carrier: Reliance National Indemnity Insurance Company Policy No.: NTF2517461 Limits: $1,000,000 per claim/aggregate Term: 7/l/99 to 7/1/00 Form: Claims made policy Rating: A-XIII w;UNiIDAS`,HL.A INFO\ILAINSUR.DOC Bonding Agent: Marsh 160 Spear Street, 12th Floor San Francisco,CA 94105 Contact: Carol Henry Tel: (415)743-8145 Re arding Bonding Capacity HLA's surety company is Reliance Insurance Company. Reliance has issued construction contract bonds for HLA in excess of$7,000,000 and HLA has been assured that we have an aggregate capacity in excess of $50,000,000. W:\IvIIDAgJiLA-INFO\RLAINSLJR.DOC AUX: -1810 (WED)00 (WED) 14:02 HARDING LAWSON ASSO TEL:7891029 P. 002 i Harding Lawson Associates ' =ti June 28,2000 HLA Project No.:49857.1 Ms.Deena Depalma City of Fort Worth Environmental Management Department Lower Level City Hall 1000 Throckmorton Street Fort Worth,Texas 76102 RE: Additional Requested Information for Formal Request for Environmental Use Agreement for Installation of Four Geoprobe Borings/Temporary Piezometers Along Cold Spring Road at intersection of Brennan Avenue City of Fort Worth,Tarrant County.Texas i Dear Ms.Depaima: Based on our previous conversations,the City of Fort Worth Environmental Management Department has requested additional information to be included with our previous submittal of a Formal Request for an Environmental Use Agreement which was submitted to your department on May 9, 1999. The additional requested information consists of the drilling subcontractors telephone number,a record of communication with the Texas Department of Transportation, and our barricade plan. These items are further discussed in the following sections_ As stated in the Formal Request for an Environmental Use,the proposed drilling contractor is Groundwater Monitoring,Inc.located at 3322 Gilbert Road in Grand Prairie, Texas. Their phone number is(972)986-7003. The Texas Department of Transportation(TXDOT)was not contacted because we are not proposing to drill within a TXDOT right-of-way(ROW). HLA will contact TXDOT if deemed necessary by the City of Fort Worth_ Our barricade plan is shown in the attached figure. HLA does not anticipate that the drilling activities will require that any lanes of traffic be blocked; however,we will place safety cones to block traffic in the right-most lane. if you require any further information or have any questions,please feel free to contact me at (713) 789-8050. Sincerely, HARDING LAW SON ASSOCIATES (2:J� Chad E.Vowell Staff Environmental Scientist II / ttachment§ gine ring an 9800 A.ChrrQnp Averue.Su4Er 200.hoes:nn T%%704P 713/ 8P-M. EAvVM1M')R(al sr)rwp%+ ! ,h. 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