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HomeMy WebLinkAbout00472C - GEIGER SHOPPING CENTER REMEDIATION GENE AUTRY TRAIL RAMON `_ Flis Edit Generate Letters Transaclior9s Reports fv9ainienance i�uit ��- Gen.tellers ! Transactions �� Reports__- 1 Mairnenance _ _ Help _ Bc'sfPro�ram � lJoCUMerd#: A0472O-" -"Group: COMPdl1NlTY a ECONOMIC '- - r AcTNe s = = = - c - ---------- QOCument 3 I It Description: License Agreement For Remedialion Services Gene Autry 8 Ramon _ ___J - - - Financials = � -�A- .y 'z = If ��,;. Approve)Date: 03117f2004 Erq)lre.Date. 0VM2006 _Closed Date: Owed: = Q.i)0 3: Co s GeP er LLC 7{Ref: COM_MllNITY R ECONOMIC DEVELCi � aY 0o---- -- - - --- --� " I _- .Paid Contiet.. 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RECITALS A. Agency is a public body,corporate and politic, exercising governmental functions and powers and organized and existing under the Community Redevelopment Law of the State of California (Health and Safety Code Section 33000 et. seq.) to carry out the purpose of redevelopment in the City of Palm Springs ("the City"). B. Licensee is in the process of implementing the Remediation Action Workplan approved by the California Department of Toxic Substances Control ("DTSC") on March 4, 2004 for the remediation of soil conditions on an approximately 36-acre vacant property located at the northeast comer of Gene Autry Trail and Ramon Road (the"Site"). C. Agency and Licensee entered into that certain License for Performance of Remediation Work (the "License") dated March 17, 2004 to allow Licensee to enter upon Agency-owned property located within the Site to undertake the soil remediation activities. D, The License is due to terminate on March 17, 2005 unless otherwise extended. E. Agency and Licensee wish to extend the termination date of the License from March 17, 2005 to October 17, 2005 given that that DTSC has yet to issue its letter of no further action for the remediation work, and the fact that the PM-10 Permit issued by the City for the clean-up activities will require dust control for Agency and Licensee-;,waned properties until the site surface is developed, the temporary fence around the entire site must remain to maintain site security, and the work plan from DTSC requires the installation, monitoring and inspection of a vapor control system over this same period. NOW, THEREFORE, based upon the foregoing recitals and the terms, conditions, covenants, and agreement contained herein, the parties hereto agree to amend the Agreement as follows: Section 1. Agency and Licensee agree that Section 8. Grant of Access shall be amended to add Section 1.19 to read as follows: Section 8. Grant of Access. Agency hereby grants to Licensee a license and permission to enter upon and use the Property for the limited purposes of undertaking the remediation of the Property, pursuant to the RAW and the schedule attached hereto as Exhibit D as set Forth in Section 3 hereof, and also including dust control measures required by the PM-10 Permit issued by the City for the clean-up activities, temporary fencing around the Shopping Center Site to maintain site security, and the installation, monitoring and inspection of a vapor control system as required by DTSC as part of the remediation of the Property. Section 2. Agency and Licensee agree that Exhibit D — Estimated Project Timeline shall be amended to reflect an extension in the Project Timeline until October 17, 2005 for Proposed Activity Number 4. Closure Testing and Documentation and Proposed Activity Number 5. Final Approvals (NFA Letter). Section 3. Agency and Licensee agree that except as provided herein, the License continues unmodified and in full force and effect. IN WITNESS WHEREOF,Agency and Licensee have executed this FirstAmendment as of the date first written above. "LICENSEE" GEIGERkCC By\ Signature 0 JOIN C/} OIL I P9.05 . Print Name and Tide "AGENCY" ATTEST. _= COMMUNITY REDEVELOPMENT AGENCY OF THE CITY OF PALM SPRINGS, a public body, corporate and politic By: ✓Assistant Secretary Executive Direof A� ROVFE R^S TO FORM. 'F ,yy pp.���,, ✓ �� i.+K;i'20 V Q f�r V V Vu,' ,/ d� � ulrvVl'✓L:.Y�� ilsl�(;�y�� p'Ag¢inc.'y Counsel 1 CONTRACT ABSTRACT Contract - First Amendment to License for Performance of Remediation Work Company Name: Geiger, LLC Company Contact: Mark Gabay, Principal Summary of Services: Extension of existing license agreement for performance of remediation work at northeast corner of Ramon & Gene Autry Contract Price: N/A Funding Source: N/A Contract Term: 7-Month extension to existing one-year License (extended through October 17, 2005) Contract Administration Lead Department: Community & Economic Development Contract Administrator: Curt Watts Contract Approvals Community Redevelopment Agency \10 Agreement No. A472C Approval Date: March X, 2005 Minute Order/ Resolution Number: To be assigned by City Clerk V, Contract Compliance Exhibits: N/A Signatures: Attached Insurance: Attached Bonds: N/A Contract prepared by: Curt Watts Submitted on: March 17, 2005 By: CcC Geiger Shopping Center Remediation AGREEMENT #472C R1239, 3-17-04 LICENSE BETWEEN - - -THE COMMUNITY REDEVELOPMENT AGENCY OF THE CITY OF PALM SPRINGS AND GEIGER, LLC FOR PERFORMANCE OF REMEDIATION WORK THIS LICENSE BETWEEN THE COMMUNITY REDEVELOPMENT AGENCY OF THE CITY OF PALM SPRINGS AND GEIGER, LLC FOR PERFORMANCE OF REMEDIATION WORK("Agreement") is made and entered into, to be effective the �i day of /L- , 2004 ("Effective Date"),by and between the COMMUNITY REDEVELOPMENT AGENCY OF THE CITY OF PALM SPRINGS, CALIFORNIA a public body corporate and politic ("Agency"), and Geiger, LLC ("Licensee"). Agency and Licensee may hereinafter be referred to individually as a "Party" and collectively as "Parties." RECITALS WHEREAS, the Agency is a public body, corporate and politic, exercising governmental functions and powers and organized and existing under the Community Redevelopment Law of the State of California (Health and Safety Code §§ 33000, et seq.); and WHEREAS, the Agency desires to effectuate the Redevelopment Plan for Redevelopment Project Area No. 4, now a part of Merged Project Area#I, by providing for the development of a regional retail shopping center within a portion of the approximately'36-acre vacant property at the northeast corner of Gene Autry Trail and Ramon Road ("Shopping Center" and "Shopping Center Site") in the City of Palm Springs, California("City"); and WHEREAS, Agency is the fee owner of certain real property, totaling approximately 14.95 acres, located at the northeast comer of Gene Autry Trail and Ramon Road, Palm Springs, California ("Property") which is a portion of the Shopping Center Site; and WHEREAS, Licensee has arranged to have access to that portion of the Shopping Center Site which is not owned by Agency for the purpose of remediating the Shopping Center Site, as more particularly described below; and WHEREAS, a true and correct map of the Shopping Center Site, including the Property,is attached hereto and incorporated herein as Exhibit"A"; and WHEREAS, the Shopping Center Site was previously used as a dump site and requires extensive remediation before construction of the Shopping Center can commence; and Y4M& JSID 1003.035/28892v16 1 WHEREAS, on April 4, 2002, Licensee entered into an Exclusive Agreement to Negotiate with the Agency relating to the remediation and development of the Shopping Center, which agreement has been extended to April 15, 2004; and WHEREAS, Licensee is experienced in shopping center development and remediating sites subject to environmental contamination and has dealt with the major tenants who might occupy the Shopping Center; and WHEREAS, Licensee has prepared a remediation action workplan ("RAW") detailing Licensee's plan to clean up the Shopping Center Site(a true and correct copy of the RAW is attached hereto and incorporated herein as Exhibit`B"); and WHEREAS, the RAW has been submitted to the California Department of Toxic Substances Control ("DTSC") as the lead agency for the Shopping Center Site's remediation; and WHEREAS, the RAW was approved by DTSC on March 4, 2004 (a true and correct copy of the DTSC letter approving the RAW is attached hereto and incorporated herein as Exhibit"C"); and WHEREAS, the RAW permits Licensee to remediate the soil conditions on the entire Shopping Center Site, including the Property; and WHEREAS, the Agency and Licensee are processing a disposition and development agreement ("DDA") relative to the remediation of the Shopping Center Site and the construction of the Shopping Center; and WHEREAS, although Agency has no obligation to enter into the DDA and could not enter into the DDA without complying with certain proceedings required under California Redevelopment Law, if Agency does approve the DDA after complying with such proceedings, Agency agrees that the value, of Licensee's costs incurred in connection with the remediation of the Shopping Center Site will be credited against the purchase price paid by Licensee to acquire the Property pursuant to the terms of the DDA; and WHEREAS, Licensee now desires to commence the remediation of the Shopping Center Site and is prepared to commence the remediation process, pursuant to the RAW; and WHEREAS, Agency would like Licensee to commence remediation of the Property concurrent with the remainder of the Shopping Center Site. NOW, THEREFORE, in consideration of the mutual covenants, promises and conditions set forth herein, the Parties hereto and each of them does agree as follows: 1. Investigation and Condition of the Property. Licensee has had full access to the Agency's files concerning the Property, as well as the Property, has undertaken its own investigation of the Property in connection with preparing and submitting the RAW 1003.035/28892v16 2 for DTSC's approval, and is taking sole responsibility for implementing the approved RAW. Agency agrees to cooperate diligently and in good faith in providing Licensee with any requested records concerning the condition of the Property and access to the Property pursuant to the terns of this Agreement. Licensee acknowledges that the surface and subsurface conditions of the Shopping Center Site are described in the RAW. Licensee acknowledges that it has access to the Property in an "as is" condition under this Agreement, and that Agency makes no representation or warranty concerning the physical, environmental, geotechnical or other condition of the Property, the suitability of the Property for the Shopping Center, and specifically disclaims all representations or warranties of any nature concerning the Property made by it, the City and their employees, agents and representatives. The foregoing disclaimer includes, without limitation, topography, climate, air, water rights, utilities, present and future zoning, soil, subsoil, existence of Hazardous Materials or similar substances, the purpose for which the Site is suited, or drainage. Licensee further agrees that it shall be responsible for the condition of the Property it creates or causes while Licensee is remediating the Property. 2. Permits. The RAW has been approved by DTSC. Licensee will obtain all necessary permits for the remediation of the Shopping Center Site, including the Property. The remediation shall be planned to take advantage of the immunity provisions of the Polanco Redevelopment Act, Health& Safety Code §§ 33459.01, et seq. 3. Remediation Pursuant to the RAW. Licensee shall undertake the remediation work pursuant to the DTSC-approved RAW and the schedule attached hereto as Exhibit "D;" provided, however, that to the extent any inconsistency occurs between undertaking the remedial work pursuant to the RAW and the directives of DTSC on the one hand and undertaking that work in accordance with the attached schedule on the other, the requirements of the RAW and DTSC shall prevail over those of the schedule. Licensee shall keep Agency and its Consultant informed of any changes in such schedule. Moreover, Licensee agrees that, with the exception of potentially or actual Hazardous Materials (as defined below), Licensee shall ensure that: (i) the volumes of existing landfill material, with respect to the Property versus the remainder of the Shopping Center Site, which is re-deposited within the footprint of the existing landfill, shall be re- deposited in proportion to the volumes removed from the Property versus the remainder of the Shopping Center Site; and (ii) the volume of landfill material redeposited on the Property not exceed the volume of such material which was removed. The Parties shall work cooperatively to devise and agree upon a method of performing the remedial work to conform to the foregoing standard so long as such a method is consistent with and does not hinder or impede in any material respect Licensee's compliance with and performance under the RAW. 4. Cost of Remediation. Licensee shall be solely responsible for the costs incurred in relmediating the Shopping Center Site, including the Property, pursuant to the RAW, and for the construction of any improvements related thereto. At no time shall the 1003.035/28892vl6 3 Agency or City be responsible for such costs, nor for reimbursing Licensee for such costs. However, the costs associated with this remediation shall be credited against the purchase price Licensee will pay in acquiring the Property, but only if the parties successfully negotiate and approve the DDA after Agency complies with the procedural requirements set forth in California Redevelopment Law. Nothing herein shall obligate the Agency to approve a DDA and if the parties do not approve and consummate the DDA, Agency shall bear no liability for any such costs incurred. 5. Assumption of All Risks and Liabilities. A. Licensee, as a material part of the consideration to Agency, hereby assumes all risks and liabilities arising out of or relating to the remediation and/or use of the Property including, without limitation, injury to persons in, upon or about the Property during Licensee's use of the Property or arising from any use of or work undertaken upon the Property or other activities of Licensee or Licensee's employees, contractors, agents, representatives, guests or invitees ("Licensee's Parties") on the Property. Licensee hereby waives all claims with respect thereof against Agency. B. Agency shall not be liable for any injury to the Property or Shopping Center Site, or injury to or death of any of Licensee's Parties, or injury or death to any trespasser, or injury to or death of any other person in or about the Property from any cause except to the extent caused by the negligence or willful misconduct of the Agency, the City or the City or Agency's Licensee's employees, contractors, agents, representatives, guests or invitees. C. Licensee's assumption of liability shall continue until DTSC issues a no further action letter or similar document evidencing that DTSC has deemed the remedial work under the RAW complete ("DTSC NFA. Notice"). Upon the issuance of such evidence of completion, Licensee's liability shall cease except as otherwise provided in Section 6. D. Licensee understands that a noticed hearing must be held to approve a DDA and that the Agency cannot commit itself to approval of a DDA until after this hearing has been held, all testimony has been considered, and the required findings have been made. Accordingly, Licensee understands that the Agency is not obligated to approve a DDA and the Agency is free to exercise its discretion in considering such DDA such that nothing in this License shall be deemed a prejudgment or commitment to enter into such DDA. Developer fully understands this and assumes such risk and if Agency does not approve such DDA, Licensee shall have no right to reimbursement for any expense incurred pursuant to this Agreement. 6. Release and Indemnification by Licensee. Licensee shall release, indemnify, defend (with counsel designated by Agency), protect and hold harmless Agency and Agency's Parties from and against any and all claims, including Environmental Claims, Environmental Cleanup Liability and Environmental Compliance Costs Concerning Hazardous Materials, demands, judgments, actions, damages, losses, penalties, liabilities, costs and expenses (including, without limitation, attorney's fees and 1003.03512889206 4 court costs) arising from or in connection with (i) the performance of any obligation by Licensee under the terms of this Agreement, (ii) Licensee's use of the Property, or (iii) the conduct of Licensee's business or any activity, work or things done, permitted or suffered by Licensee in or about the Property, except to the extent caused by Agency's negligence or willful misconduct. The obligations of Licensee under Sections 5 and 6 shall survive the expiration or earlier termination of this Agreement up to and including the third anniversary of the date of the issuance of the DTSC NFA Notice. For purposes of this Section, the following terns shall have the following meanings: "Environmental Claim" means any claim for personal injury, death and/or property damage made, asserted or prosecuted by or on behalf of any third party, including, without limitation, any governmental entity, relating to the Property or its operations and arising or alleged to arise under any Environmental Law. "Environmental Cleanup Liability" means any cost or expense of any nature whatsoever incurred to contain, remove, remedy, clean up, or abate any contamination or any Hazardous Materials on or under all or any part of the Property, including the ground water there under, including, without limitation, (A) any direct costs or expenses for investigation, study, assessment, legal representation, cost recovery by governmental agencies, or ongoing monitoring in connection therewith and (B) any cost, expense, loss or damage incurred with respect to the Property or its operation as a result of actions or measures necessary to implement or effectuate any such containment, removal, remediation,treatment, cleanup or abatement. "Environmental Compliance Cost" means any cost or expense of any nature whatsoever necessary to enable the Property to comply with all applicable Environmental Laws in effect. `Environmental Compliance Cost" shall include all costs necessary to demonstrate that the Property is capable of such compliance. "Environmental Law" means any federal, state or local statute, ordinance, rule, regulation, order, consent decree,judgment or common-law doctrine, and provisions and conditions of permits, licenses and other operating authorizations relating to (A) pollution or protection of the environment, including natural resources, (B) exposure of persons, including employees, to Hazardous Materials or other pro-ducts,raw materials, chemicals or other substances, (C) protection of the public health or welfare from the effects of by- products, wastes, emissions, discharges or releases of chemical sub-stances from industrial or commercial activities, or (D) regulation of the manufacture, use or introduction into commerce of chemical substances, including, without limitation, their manufacture, formulation, labeling, distribution, transportation, handling, storage and disposal. "Hazardous Material" is defined to include any hazardous or toxic substance, material or waste which is or becomes regulated by any local governmental authority, the State of California, or the United States Government. The term "Hazardous Material" includes, without limitation, any material or substance which is: (A) petroleum or oil or 1003,035/2889206 5 gas or any direct or derivate product or byproduct thereof; (B) defined as a "hazardous waste," "extremely hazardous waste" or "restricted hazardous waste" under Sections 25115, 25117 or 25122.7, or listed pursuant to Section 25140, of the California Health and Safety Code, Division 20, Chapter 6.5 (Hazardous Waste Control Law); (C) defined as a "hazardous substance" under Section 25316 of the California Health and Safety Code, Division 20, Chapter 6.8 (Carpenter-Presley-Tanner Hazardous Substance Account Act); (D) defined as a "hazardous material," "hazardous substance," or "hazardous waste" under Sections 255010) and (k) and 25501.1 of the California Health and Safety Code, Division 20, Chapter 6.95 (Hazardous Materials Release Response Plans and Inventory); (E) defined as a"hazardous substance"under Section 25281 of the California Health and Safety Code, Division 20, Chapter 6.7 (Underground Storage of Hazardous Substances); (F) "used oil" as defined under Section 25250.1 of the California Health and Safety Code; (G) asbestos; (H) listed under Chapter 11 of Division 4.5 of Title 22 of the California Code of Regulations, or defined as hazardous or extremely hazardous pursuant to Chapter 10 of Division 4.5 of Title 22 of the California Code of Regulations; (I) defined as waste or a hazardous substance pursuant to the Porter-Cologne Act, Section 13050 of the California Water Code; (J) designated as a "toxic pollutant" pursuant to the Federal Water Pollution Control Act, 33 U.S.C. § 1317; (K) defined as a "hazardous waste" pursuant to the Federal Resource Conservation and Recovery Act, 42 U.S.C. § 6901 et seq. (42 U.S.C. § 6903); (L) defined as a "hazardous substance" pursuant to the Comprehensive Environmental Response, Compensation and Liability Act, 42 U.S.C. § 9601 et seq. (42 U.S.C. § 9601); (M) defined as "Hazardous Material" pursuant to the Hazardous Materials Transportation Act, 49 U.S.C. § 5101 et seq.; or(N) defined as such or regulated by any "Superfund" or "Superlien" law, or any other federal, state or local law, statute, ordinance, code, rule, regulation, order or decree regulating, relating to, or imposing liability or standards of conduct concerning Hazardous Materials and/or underground storage tanks, as now, or at any time here-after, in effect. 7. Security' The parties acknowledge that the security of the public and the Shopping Center Site is a priority. For this reason, Licensee shall implement safeguards to minimize security breaches and to prevent the public from accessing the Shopping Center Site. Prior to commencement of remediation activities, Licensee shall install a chain link fence around the perimeter of the Shopping Center Site to prevent the public from accessing the Shopping Center Site. Licensee shall be solely responsible for the cost of any security necessary in connection with this Agreement. Licensee shall undertake such other reasonable security measures as Agency requests in writing to Licensee. 8. Grant of Access. Agency hereby grants to Licensee a license and permission to enter upon and use the Property for the limited purposes of undertaking the remediation of the Property, pursuant to the RAW and the schedule attached hereto as Exhibit D as set forth in Section 3 hereof. The License granted herein shall commence as of the Effective Date and shall terminate one (1) year from the Effective Date, unless otherwise agreed to by the Parties and memorialized in writing. 9. Insurance. Prior to the commencement of the remediation of the Property, Licensee will provide Agency with proof of insurance, at Licensee's sole cost and 1003.035/28892vl6 6 expense, to remain in full force and effect during the entire term of this Agreement. The following policies of insurance shall be maintained: a. Workers' Compensation Insurance. Workers' Compensation Insurance in an amount required by the laws of California and Employer's Liability. Insurance in an amount not less that ONE MILLION DOLLARS ($1,000,000) combined single limit for all damages arising from each accident or occupational disease. b. Commercial General Liability. Commercial General Liability Insurance written on a per-occurrence and not a claims-made basis in an amount not less that ONE MILLION DOLLARS ($1,000,000) combined single limit. C. Automobile Liability Insurance. A policy of comprehensive automobile liability insurance written on a per-occurrence basis in an amount not less than TWO MILLION DOLLARS ($2,000,000) combined single limit covering all owned, non-owned, leased, and hired vehicles used in connection with operations occurring on the Property. d. Professional Liability Insurance. A policy of professional liability insurance with the removal of all pollution and/or asbestos exclusions written on a "pure claims-made" basis versus a "claims-made and reported" basis in an amount not less than FIVE MILLION DOLLARS ($5,000,000) combined single limit, which includes coverage for all covered acts and services performed pursuant to this Agreement, to pay on behalf of Licensee and Agency all sums which Licensee and Agency shall become legally obligated to pay as "damages" by reason of liability arising out of any negligent act, error or omission in rendering or failing to render the professional services specified in this Agreement, whether committed or alleged to have been committed by Licensee, its employees, agents, and contractors or by any other person or entity for whom Licensee is legally responsible. e. Other Insurance. Such other policies of insurance including, but not limited to, casualty insurance, business interruption insurance and fidelity insurance, as may be required by the nature of operations. f. General Provisions. All of the foregoing policies of insurance shall name the Agency as an additional insured and shall be primary insurance and any insurance maintained by Agency shall be excess and non-contributing. Each insurer of Licensee shall waive all rights of contribution and subrogation against Agency and its respective insurers. Each of such policies of insurance shall name Agency and its affiliated entities, and their respective officers, directors, agents, and employees (collectively, "Agency's Parties.") All policies of insurance required to be obtained by Licensee hereunder shall be issued by insurance companies authorized to do business in California and must be rated no less than B+:VII or better in Best's Insurance Guide. Prior to engaging in any operations hereunder, Licensee shall deliver to Agency certificate(s) of insurance 1003.035128892v16 7 evidencing the coverages specified above. Such policies shall not be cancelled or materially altered to the detriment of Agency or Licensee without the insurer providing Agency with 30 days' written notice. 10. Completion of Remedial Work. Licensee shall undertake the remedial work in accordance with the RAW. When Licensee believes the remedial work is complete, it shall so inform Agency's Consultant in writing of the basis therefor and Agency's Consultant shall within ten (10) days provide a written response. Thereafter, Licensee may seek from DTSC a DTSC NFA Notice. The RAW shall be deemed complete upon issuance of the DTSC NFA Notice. Upon Agency's receipt of such evidence of completion, it will issue a notice of completion; provided, however, that the issuance or non-issuance of such an Agency notice shall not affect in any manner DTSC's confirmation that such work is complete, which confirmation shall be diapositive of the completion of such work. 11. Agency's Remediation Consultant. Agency may retain a remediation consultant ("Consultant") to advise the Agency on the status of the remediation work. Should Agency elect to retain a Consultant, Licensee shall provide the Consultant copies of all revised remediation plans and include the Consultant in all remediation-related meetings relating to any portion of the Shopping Center Site. The Consultant shall have full and complete access to the Shopping Center Site at all times. Neither the Agency nor its Consultant shall in any manner interfere with, impede or render impossible Licensee's remedial work pursuant to the RAW. Such work will be Licensee's sole responsibility, and the Agency and its Consultant shall have no right to direct or supervise such work. Consultant however, shall be the Agency's field representative and shall advise Licensee in writing of any concerns that Consultant has with Licensee's performance under the RAW. Consultant shall keep Agency informed as to Licensee's performance. Any concerns of consultant with Licensee's performance shall first be brought to Licensee. Consultant may confer with DTSC during the performance of the remedial work and advise DTSC of any concerns it has brought to Licensee's attention only if: (a) Licensee does not reasonably address such concerns within five (5) days of receiving Consultant's written notice thereof; and (b) Consultant provides Licensee at least forty-eight (48) hours' prior written notice of the time, place and manner of such a communication Consultant intends to have with DTSC so that Licensee may participate in such communication should it chose to do so. 12. Performance Bond/Letter of Credit. Concurrent with the commencement of the remedial work on the Property, Licensee shall deliver to Agency a performance bond or letter of credit in the sum of the agreed-upon amount for the remediation work on the Property, which amount shall be reduced periodically to correspond to the amount of the work remaining to be performed as the work progresses. The bond or letter of credit shall secure the faithful performance of the remediation. If a bond is used, the bond shall contain the original, notarized signature of an authorized officer of the surety and affixed thereto shall be a certified and current copy of his power of attorney. The bond or letter of credit shall be unconditional and remain in force until issuance of the DTSC NFA Notice, at which point the bond or letter of credit shall be null and void. Should Licensee 1003.035/28892vl6 8 fail to complete the remediation work on the Property pursuant to the RAW, Agency may proceed on the performance bond requiring the surety to complete the work 13. Notice of Commencement of Work Reports. The Licensee shall give the Agency twenty-four hours prior written notice of Licensee's commencement of work on the Property. Licensee shall issue periodic written reports to Agency to keep Agency informed on the progress of the work. 14. Schedule. The remediation work shall be undertaken pursuant to the approved RAW and the schedule attached as Exhibit "D." 15. No Agency Financial Assistance. None of the terms in this Agreement shall be construed as providing financial assistance contrary to the provisions of Health& Safety Code Sections 33426.5 and 33426.7. However, the contaminated condition of the Property can be taken into account to determine the actual fair market value of the Property. Therefore, should Licensee complete the remediation of the Shopping Center Site, the parties successfully negotiate and execute the DDA and the Agency gives Licensee a credit against the purchase price for the value of Licensee's costs incurred and risks associated with the remedial work pursuant to the RAW, such credit shall not be considered to be financial assistance 16. License Not Assignable. This Agreement shall become effective immediately and is personal to the Licensee and is not assignable. Any attempt by Licensee to assign this Agreement shall be void and shall cause the immediate termination of this Agreement. 17. Waste. Damage, or Destruction; Surrender of Property. The Licensee shall not allow any waste, damage or destruction to occur on the Property. If this Agreement terminates, upon such termination, Licensee, as its sole expense, shall repair any waste, damage or destruction and, except for any contaminated soil which has been removed, shall restore the Property to that condition existing prior to Licensee's use of the Property, waste, damage or destruction. 18. Government Approvals: Compliance with Laws. Licensee, at its sole cost and expense, shall obtain all permits and approvals required from any governmental or quasi-governmental agency having jurisdiction with respect to the remediation and related activities as set forth in the RAW. 19. Termination Prior to Expiration of Term. Agency may terminate this Agreement only upon providing Licensee thirty (30) days' written notice of termination and each of the reasons therefor, and only if Licensee: (a) fails to undertake the remedial work in substantial compliance with the DTSC-approved RAW, or (b) materially breaches this Agreement. Notwithstanding the foregoing, Agency may terminate this Agreement upon twenty-four (24) hours' written notice to Licensee if(i) Licensee files a petition in bankruptcy, (ii) Licensee is adjudicated bankrupt, (iii) a petition in bankruptcy is filed against Licensee and not discharged within thirty (30) days, (iv) Licensee becomes insolvent or makes an assignment for the benefit of its creditors or an 1003.035/2889206 9 arrangement pursuant to any bankruptcy law, or (v) a receiver is appointed for Licensee or its business during the Term of this Agreement. 20. Governing Law. This Agreement shall be governed by, interpreted under, and construed and enforced in accordance with the laws of the State of California. 21. Attorney's Fees. If either party to this Agreement is required to initiate or defend or made a party to any action or proceeding in any way connected with this Agreement, the prevailing party in such action or proceeding, in addition to any other relief which may be granted, whether legal or equitable, shall be entitled to reasonable attorney's fees. Attorney's fees shall include attorney's fees on any appeal, and in addition a party entitled to attorney's fees shall be entitled to all other reasonable costs for investigating such action, taking depositions and discovery and all other necessary costs the court allows which are incurred in such litigation. All such fees shall be deemed to have accrued on commencement of such action and shall be enforceable whether or not such action is prosecuted to judgment. 22. Severability. If any paragraph, section, sentence, clause of phrase contained in this Agreement shall become illegal, null or void, against public policy, or otherwise unenforceable, for any reason, or held by any court of competent jurisdiction to be illegal, null or void, against public policy, or otherwise unenforceable, the remaining paragraphs, sections, sentences, clauses or phrases contained in the Agreement shall not be affected thereby. 23. Waiver. The waiver of any breach of any provision hereunder by Agency or Licensee shall not be deemed to be a waiver of any preceding or subsequent breach hereunder. No failure or delay of any Party in the exercise of any right given hereunder shall constitute a waiver thereof nor shall any partial exercise of any right preclude further exercise thereof. 24. Counterparts. This Agreement may be signed in any number of counterparts, each of which will be deemed to be an original, but all of which together will constitute one instrument. 25. Notice. Any notice required or permitted to be given hereunder shall be in writing and signed by the Party, officer or agent of the Party to whom it is to be sent, and shall be either: (a) personally delivered to the Party to whom it is to be sent, or (b) sent via overnight courier services, or (c) sent via certified or registered mail, return receipt requested, postage prepaid to the respective addresses, or such other addresses as the Parties may specify in writing: To Agency: Community Redevelopment Agency of the City of Palm Springs 3200 East Tahquitz Canyon Way Palm Springs, California 92262 Attn: Redevelopment Administrator 1003.035/28892v16 10 With a Copy to: Aleshire&Wynder, LLP 18881 Von Kannan Avenue, Suite 400 Irvine, CA 92612 Attn: David J. Aleshire, Esq. To Licensee: Geiger, LLC 9171 Wilshire Boulevard Beverly Hills, California 92210 Attn: Mr. Mark Gabay With a copy to: Greenberg Traurig, LLP 2450 Colorado Avenue, Suite 400 E Santa Monica, CA 90404 Attn: Fernando Villa, Esq. [SIGNATURE PAGE FOLLOWS] 1003.035/28892v16 1 1 IN WITNLSS WHERGOF, ,Agency and Licensee have executed this Agremnent ns of i io RlTective Date Ps indicated by tho signaluxes below. LTCLNSVB: By: GL'I R,TILC Date, Is 2004 BT jJ Print Na Title: bald; _ . 22004 By: PdntNarzxe _ Title: (All siguaturos must be notarized,) ATTROWD AS TO FORM: Counsel for U c eo AGENCY: COMMUNITY RBDEVF,LOPMENT AGHNC:Y of THE CITY OF PALM SPRINGS, CALIFORNIA Drcto:__ ,2004 By: Chairman AI-FEST: Agoriey Scoretuy APPROVFD AS TO FORM BY: Aloshiro&Wynder Tay. v a d .Al cncy Allomcy u 07.o�srzss9avt c 12 IN WITNESS WHEREOF, Agency and Licensee have executed this Agreement as of the Effective Date as indicated by the signatures below. LICENSEE: By: GEICjkR, LLC 0 Date: 6 2004 By. Print Nanye: Title: Ptgft-16J-��^^( Date: 12004 By: Print Name: Title: (All signatures must be notarized.) APPROVED AS TO FORM: By: Counsel for Licensee AGENCY: COMMUNITY REDEVELOPMENT AGENCY OF THE CITY OF PALM SPRINGS, CALIFORNIA Datq. �� 2004 By: 1 1(� L Chairman ATTEST: Agency Secretary APPROVED AS TO FORM BY: Aleshire&Wynder David J. Aleshire, Agency Attomey 1 1003.03 5/2 8 8 92v16 12 State of California ) County of Los Angeles) On April 22, 2004, before me, Roger H. Licht, the undersigned Notary Public personally appeared JOHN J. CARROLL, personally known to me (or proved to me the basis of satisfactory evidence) to be the person (s) whose name (s) is/are subscribed to the within instrument and acknowledged to me that he/she/they executed the same with his/her/their authorized capacity (ies) , and that by his/her/their signature (s) on the instrument the person (s) , or the entity upon behalf of which the person (s) acted, executed the instrument . 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Iatlslxi r: vat, 1 VM.I INFOiI 1MDKMC/Gx: Six :{ 1 I Y I ` ' I I�t rw\vxwswxim.I srNi/nvSl sa rt. } I I II 9n I I II MTN tEtLL WEDItlIU NKl �I U -� _. _• �$ 3 III�IIRI:1'lllil 7$= t 'I urrnurr.(sln Y. 11 V i Fl I I 11111 N� ' (LJ1 U1XI i I piN 3kAWF% l 0 �' I I I _ o I111111u : I 5¢ (al 5) I0.{11F El tARE RAMON ROAD PRCPDSED PYASE-I AND OVERALL SITE PLAN cur :SP-36a The Source Group, Inc, FINAL REMOVAL ACTION WORKPLAN FORMER PALM SPRINGS LANDFILL Intersection of Gene Autry Trail and Ramon Road Palm Springs, California Third Revision: March 3, 2004 Original Version: July 25, 2003 First Revision: November 5, 2003 Second Revision: December 16, 2003 Prepared for: Proponent: Department of Toxic Substance Control Geiger, LLC 1011 North Grandview Avenue 9171 Wilshire Boulevard, Suite 600 Glendale, California, 91201 Beverly Hills, CA 90210 Prepared by: The Source Group,Inc. 501 Marin Street, Suite 112B Thousand Oaks, California 91360 D 0Fp Prepared by: ��5 .EVENS �0 ed By: ��- No.6019 Marerenz, .G., C.HG. * rip. 6/04 James M. Evensen, Jr., R.G., C.HG, Principal Hydrogeologist cp Q Principal Hydrogeologist �9TFOF CALIF�Q�\ Voluntary Cleanup Agreement DTSC Site Code: 401090 Docket Number: HAS-A 02/03-061 FINAL REMOVAL ACTION WORKPLAN Former Palm Springs Landfill Palm Springs, California March 3,2004 FINAL DRAFT REMOVAL ACTION WORKPLAN Former Palm Springs Landfill Intersection of Gene Autry Trail and Ramon Road Palm Springs, California TABLE OF CONTENTS Section Page TABLE OF CONTENTS.............................................................................................................. ii TABLES......................................................................................................................................iii LISTOF FIGURES.....................................................................................................................iii LISTOF APPENDICES..................................................................................I...........................iii LISTOF ACRONYMS ............................................................................................................... iv 1.0 INTRODUCTION.............................................................................................................1 1.1 PURPOSE OF THE REMOVAL ACTION WORKPLAN ..............................................1 1.2 SITE DESCRIPTION AND HISTORY.........................................................................1 1.2.1 SITE DESCRIPTION .............................................................................................1 1.2.2 SITE HISTORY....................................................................................................2 1.2.3 PREVIOUS INVESTIGATIONS.................................................................................3 1.3 EE/CA EQUIVALENT DOCUMENT....................................................................... ....6 1.4 NATURE OF THE WASTES.......................................................................................6 1.4.1 LANDFILL CONTENTS ..........................................................................................6 1.4.2 CONTAMINANTS OF CONCERN.............................................................................7 1.5 ALTERNATIVE REMEDIAL TECHNOLOGIES CONSIDERED...................................8 1.5.1 No ACTION ........................................................................................................8 1.5.2 CHEMICAL STABILIZATION OR FIXATION................................................................9 1.5.3 EXCAVATION AND REMOVAL................................................................................9 1.5.4 EXCAVATION AND REPLACEMENT ........................................................................9 1.6 REMEDIAL ACTION: SOURCE AREA EXCAVATION.............................................10 1.6.1 CLEANUP OBJECTIVES......................................................................................10 1.6.2 EXCAVATION....................................................................................................11 1.6.3 SOIL SAMPLING GRID AND SAMPLE RATIONALE..................................................13 1.6.4 MATERIAL SEGREGATION.................................................................................. 14 1,6.5 OFFSITE DISPOSAL OF WASTE ..........................................................................14 1.6.6 RECYCLING......................................................................................................14 1.6.7 DEED RESTRICTION..........................................................................................14 1.7 INITIAL STUDY/NEGATIVE DECLARATION ...........................................................15 2.0 ENGINEERING DESIGN ..............................................................................................16 2.1 SITE SURVEY..........................................................................................................16 2.2 DESIGN BASIS ........................................................................................................16 2.3 DESIGN DRAWINGS .................:.............................................................................16 2.3.1 EMISSION MANAGEMENT AND DUST CONTROL ...................................................16 2.3.2 AIR MONITORING.............................................................................................. 17 2.4 LANDFILL CAPPING................................................................................................17 2.5 DRAINAGE CONTROL............................................................................................. 17 2.6 LANDFILL GAS CONTROL......................................................................................18 ii The Source Croup,Inc. FINAL REMOVAL ACTION WORKPLAN Former Palm Springs Landfill Palm Springs, Califomia March 3,2004 2.6.1 CONCEPTUAL EVALUATION................................................................................18 2.6.2 PLAN OVERVIEW..............................................................................................20 2.6.3 PIPING CONFIGURATION....................................................................................20 2.7 LANDFILL GAS RECOVERY SYSTEM MONITORING ............................................20 3.0 SCOPE OF CONSTRUCTION ACTIVITIES..................................................................22 3.1 PERMITTING............................................................................................................22 3.1.1 EXCAVATION ....................................................................................................22 3.1.2 WATER............................................................................................................22 3.1.3 ELECTRICAL.....................................................................................................22 3.1.4 AIR..................................................................................................................22 3.1.5 BUILDING.........................................................................................................23 4.0 HEALTH AND SAFETY.................................................................................................24 4.1 HEALTH AND SAFETY PLAN..................................................................................24 4.1.1 ENGINEERING CONTROLS'AND PERSONAL PROTECTIVE EQUIPMENT....................24 4.1.2 AIRMONITORING..............................................................................................24 4.1.3 SOIL INGESTION ...............................................................................................25 4.2 EQUIPMENT DECONTAMINATION.........................................................................26 4.3 SITE CONTROLS AND MANAGEMENT..................................................................25 5.0 PROJECT SCHEDULING.............................................................................................26 6.0 REMOVAL ACTION PROJECT MANAGEMENT PLAN ................................................27 7.0 IDENTIFICATION OF CONTRACTORS AND REQUIREMENTS..................................28 8.0 COMMUNITY RELATIONS PLAN.................................................................................29 9.0 STANDARD LIMITATIONS ...........................................................................................30 10.0 REFERENCES..............................................................................................................31 TABLES Table 1 ...................................................................... Revised Toxicity Equivalency Calculations LIST OF FIGURES Figure1 ........................................................................................................... Site Location Map Figure2 ...........................................................................I......................... Boring Location Map Figure 3 .................................................................................. Proposed Limits of Buried Debris Figure 4 ............................................................................................. Soil Sampling Grid Layout Figure 5 .......................................................................................Vapor Recovery Piping Layout Figure 6 ................... Passive Vapor Collection Vault, Trench Section Piping and Backfill Details LIST OF APPENDICES Appendix A............................................................. EPA Method 8280A Data Quality Objectives Appendix B............. Tabulated Metals Analyses, Leighton and Associates,,Inc., August 6, 1993 Appendix C............ Boundary/Topo Survey, Mainiero, Smith and Associates, Inc., March 2003 Appendix D Proposed Shopping Center Development, Reeves Associates Architects, July 2003 Appendix E.............. Conceptual Landfill Gas Collection System, General Design Specifications if The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Former Palm Springs Landfill Palm Springs, California March 3,2004 LIST OF ACRONYMS amsl........................................................................................................... above mean sea level bgs..............................................................................................................below ground surface Cal EPA....................................................................California Environmental Protection Agency CAM .............................................................................................. California Assessment Metals CCR..............................................................................................California Code of Regulations CFR.................................................................................................Code of Federal Regulations COC .........................................................................................................Constituent of Concern COPC........................................................................................Constituent of Potential Concern cy..................................................................................................................................cubic yard DOT................................................................................................Department of Transportation DQO........................................................................................................Data Quality Objectives DTSC............................................................................ Department of Toxic Substances Control EPA..........................................................................................Environmental Protection Agency. ftz................................................................................................................................square feet GC/MS........................................................................ Gas Chromatography/Mass Spectrometry HASP........................................................................................................Health and Safety Plan HSA................................................................................................................Hollow Stem Auger IS................................................................................................................................Initial Study mg/kg....................................................................................................... milligrams per kilogram mg/I..................................................................................................................milligrams per liter MSL.................................................................................................................... Mean Sea Level NCP.................................................................................................... National Contingency Plan PAH.......................................................................................polynuclear aromatic hydrocarbons PCDD ........................................................................................ polychlorinated dibenzo-p-dioxin PCDF...............................................................................................polychlorinated dibenzofuran PID ........................................................................................................ Photoionization Detector PSL..............................................................................................................Palm Springs Landfill QA/QC.....................................................................................Quality Assurance/Quality Control RCRA.........................................................................Resource Conservation and Recovery Act RWQCB.............................................................California Regional Water Quality Control Board SCAQMD................................................................South Coast Air Quality Management District STL..................:...................................................................................Severn Trent Laboratories STLC................................................................................Soluble Threshold Limit Concentration TCLP.........................................................................Toxicity Characteristic Leaching Procedure TSG.........................................................................................................The Source Group, Inc. TTLC ....................................................................................Total Threshold Limit Concentration USCS ...................................................................................... Unified Soil Classification System USGS ........................................................................................United States Geological Survey VCA.........................................................................I..............I..... Voluntary Cleanup Agreement VOC.................................................................................................Volatile Organic Compounds WET.......................................................................................... California Waste Extraction Test IV The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 1 Former Palm Springs Landfill Palm Springs, California March 3,2004 1.0 INTRODUCTION On behalf of Geiger, LLC (Geiger; Proponent), The Source Group, Inc. (TSG) is pleased to present this Final Removal Action Workplan (RAW) for removal and management of soil and landfill refuse/debris at the former Palm Springs Landfill (PSL). The former landfill is located at the intersection of Gene Autry Trail and Ramon Road, Palm Springs, California (Figures 1 and 2). This RAW is presented to the California Environmental Protection Agency (Cal EPA) Department of Toxic Substance Control (DTSC) under the terms of the Voluntary Cleanup Agreement (VCA). Under the VCA, the Site Code is 401090 and the Docket Number is HAS-A 02/03-061. 1.1 PURPOSE OF THE REMOVAL ACTION WORKPLAN The purpose of the RAW is to present the technical and operational procedures, conceptual designs, and schedule of the removal action to the DTSC. The work proposed herein includes the removal, replacement, and re-compaction of the landfill material within the existing landfill footprint. This RAW addresses the following aspects of remediation: ■ Excavation and Recompaction; • Site Restoration Activities; and • Monitoring for Landfill Gases. 1.2 SITE DESCRIPTION AND HISTORY 1.2.1 Site Description The combined area of the properties proposed for development includes approximately 36.6 acres. The Site is the location of a currently inactive landfill that had accepted predominantly household refuse and construction waste from the early 1930's until the mid-1960's. The southern portion of the Site was reportedly occupied by a small-scale sewage treatment plant, which operated from the late 1930's to the mid-1940's. The facility included several small buildings, a water well, and wastewater percolation basins (retention ponds). Leftover sewer sludge was reportedly used off-site for fertilizer. No sewage sludge was reported to be buried in the landfill. The sewage plant was not operated from the late 1940's to the 1960's, during the dismantling of the facility. The southern portion of the property was never used as a landfill. During the period of landfill activity, the volume of landfill refuse was reportedly reduced in burn pits. Evidence of these burn pits was present in the historical records and documented by Leighton and Associates (Leighton) during their 1993 investigation. Leighton (1993) estimated the volume of landfill debris to be approximately 545,000 cubic yards (yd), of which approximately 158,000 yd3 and 387,000 yd3 of the material are construction and The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 2 Former Palm Springs Landfill Palm Springs, California March 3,2004 household debris, respectively. The refuse in the western 1/3 of the landfill is predominantly constructions debris, which consists of concrete rubble, bricks, rock, burned material, wood, scrap metal, wire, glass, charcoal, and oxidized soils. The eastern 2/3 of the landfill consists of predominantly household debris consisting of newspapers, cardboard, burned and unburned wood, bottles, cans, tires, fabrics, plastic, and scrap metal. Using Leighton's Trench Location Map, dated July 8, 1993, the surface area of the landfill is approximately 1,130,000 square feet (ftz). The thickness of the landfill material ranges from 7.0 to 20.5 feet, with an average thickness of 15 feet. The elevation of the property ranges from 372 feet above mean sea level (amsl) in the southern portion (where there is no buried landfill material) to 388 feet amsl in the western-central portion of the property (Leighton, 1988). Additional details regarding the former landfill can be found in Leighton and Associates' reports titled Swat Proposal for Palm Springs Landfill, Gene Autry Trail and Ramon Road, Riverside County, California, dated September 28, 1988 and Interim Data Report on an Environmental Site Assessment for Potential Hazardous Materials/Waste Contamination, Palm Springs Landfill, Northeast Corner of Gene Autry Trail and Ramon Road, City of Palm Springs, County of Riverside, California, dated August 6, 1993. Copies of those reports were included in the February 6, 2003 Soil Sampling and Analysis Plan (SAP) within Appendices A and B (TSG, 2003a). 1.2.2 Site History Historical records indicate that the material contained in the landfill is comprised of inert waste and household refuse. Subsequent environmental assessment data substantiate those records. The findings from the environmental investigations reveal that the construction debris consists of concrete rubble, fractured bricks and blocks, rock, charred wood, metal, wire, cable, melted and un-melted bottles, and unburned papers (Leighton, 1993). Similarly, the household waste conforms to typical domestic refuse and includes newspaper, partially burned and unburned wood and vegetative debris, bottles, cardboard, cans, tires, fabric, plastic, wire, and cable (Leighton, 1993). TSG reviewed aerial photographs from 1939 through 1994. The earliest photographs show retention basins on the southern portion of the Site, with some containing liquids, Small buildings were also observed in this area. Landfill operations were limited to the southwest quarter of the Site in the 1939 photograph. Landfill operations were limited to the western half of the Site in the photographs from the 1940's. Photographs from the 1950's show expansion of landfill operations to the east, in the central portion of the Site. The photograph from 1961 shows the active landfill area in the central portion of the Site. The residential development to the north of the Site was developed in the 1950's. It is likely that burning at the landfill was limited to the 1930's and 1940's, when the landfill operations The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 3 Former Palm Springs Landfill Palm Springs, California March 3,2004 occupied the western half and east central portion of the Site, and prior to the residential development to the north. Records indicate that the Palm Springs Army Airfield used the landfill for general refuse only, from 1942 through 1944 (City of Palm Springs, 1946). No records indicate disposal of potential munitions or other potentially hazardous materials. 1.2.3 Previous Investigations In 1979, Irvine Soils Engineering conducted a preliminary soil geotechnical investigation to define the nature of subsurface soils. Thirty trenches were excavated to determine the scope of soil reworking (excavation and compaction) prior to potential development of the Site. No environmental testing was conducted. In 1984, Pioneer Consultants conducted geotechnical explorations to define the extent and volume of fill material and to monitor for methane. Twenty-two borings were drilled to maximum depths of 50 feet and twelve test pits were excavated. In 1987, Leighton &Associates performed a geotechnical assessment of the southern portion of the Site (approximately 14 acres) for proposed development. No sewage sludge was reported in the borings drilled in this area. In 1987, Leighton performed a hazardous materials investigation of the southern 14 acres of the Site in conjunction with the geotechnical assessment. Soil samples were collected from 8 geotechnical borings. Soil samples were analyzed for volatile organic compounds (VOCs), semi volatile organic compounds (SVOCs), organochlorine pesticides, polychlorinated biphenyls (PCBs), and California Assessment Manual metals by EPA Methods 624, 626, 608, and CAM metals, respectively. In addition, a soil gas survey was conducted to assess potential methane gas. Results of the assessment indicated no hazardous material or methane gas. In 1989, Leighton conducted a Solid Waste Water Quality Assessment Test (SWAT) for the property owner (the City of Palm Springs). The purpose of the assessment was to determine if regulated chemicals had leached from the former landfill into soil and groundwater. The assessment included the following: Review of agency files and records for the Site; Review of aerial photographs; Review of water well logs, water quality records and water elevation records; ■ Drill soil borings and collect soil samples for analysis; and Install groundwater monitoring wells and collect groundwater samples for analysis. Four soil borings were drilled along the perimeter of the Site as follows: boring PSV-1, northwest corner; boring PSV2, north perimeter; boring PSV-3, east perimeter; boring PSV-4 The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 4 Former Palm Springs Landfill Palm Springs, California March 3,2004 south perimeter. Soil samples collected at depths ranging from 13 to 17 feet bgs were analyzed for SVOC's and VOC's. None of the soil samples contained detectable concentrations of these compounds. As a component of the SWAT conducted by Leighton, two groundwater monitoring wells were installed at the Site. Well PSMW-1 was drilled in the northwest corner of the Site and well PSMW-2 was drilled in the southeast corner of the Site. Groundwater was encountered at approximately 170 feet bgs during drilling. Well PSMW-1 was constructed with well screen from 164 to 184 feet and well PSMW-2 was constructed with well screen from 159 to 179 feet. Groundwater samples were collected from both wells and analyzed for VOCs, SVOCs, CAM metals, and total dissolved solids (TDS). VOCs and SVOCs were not detected in the groundwater samples. Iron (Fe) concentrations in groundwater ranged from 2.10 to 2.24 milligrams per liter (mg/l), exceeding drinking water standards of 0.3 mg/I. Manganese concentrations in groundwater ranged from 0.06 to 0.14 mg/I, exceeding the secondary drinking water standard of 0.05 mg/I. All other metals were below drinking water standards. TDS in the groundwater samples ranged from 230 to 232 mg/I. In 1993, Leighton performed an extensive phase of site assessment. The assessment was conducted to assess lead, total petroleum hydrocarbons (TPH), VOC's, SVOC's, pesticides, PCB's, oil and grease, California Code of Regulations (CCR) metals, biogenic material, and fixed gases at the Site. The assessment included the following: • Excavation of 21 test pits within the landfill portion of the Site; • Collection of soil samples from the test pits for laboratory analysis; and ■ Completion of a soil gas survey consisting of 10 sampling points in the landfill portion of the Site, and analysis of gas samples for VOCs and fixed gases. Figure 2 illustrates the test pit locations. The test pits were logged showing a description of landfill material and soil. The pits were excavated to the depth of the native soil so that native soil samples could be obtained. After completion of logging and collection of soil samples, the test pits were backfilled with the excavated material. The greatest thickness of landfill material was 20.5 feet (Trench T-6). The thickness of the fill material is greater in the eastern and southern portions of the landfill area. Household fill material was found in the eastern portion of the fill area and consisted of newspapers, cardboard, burned and unburned wood, bottles, cans, tires, fabrics, plastic, and scrap metal. The majority of fill material was found to be household refuse. Fill material in the western portion of the landfill appeared to be predominantly construction debris, consisting of burned material including concrete rubble, fractured bricks and rock, wood, scrap metal, wire, melted bottles, charcoal, and oxidized soils. The central portion of the landfill The Source croup,Inc, FINAL REMOVAL ACTION WORKPLAN Page 5 Former Palm Springs Landfill Palm Springs,California March 3, 2004 may contain either household or construction refuse. The boundary between the household and construction debris is gradational from east to west. Leighton estimated the total volume of landfill material to be 545,000 cubic yards. Results of the Leighton investigation showed that two of the 67 soil samples collected from the test pits contained total lead concentrations that exceeded the CCR Title 22 Total Threshold Limit Concentration (TTLC) of 1,000 milligrams per kilogram (mg/kg). Both samples were collected at a depth of 10 feet bgs. None of the other target analytes exceeded their respective action level. Assessment records also show that, in addition to direct burial, some trash was burned before being covered. Trash burning, which was common practice in contemporaneous landfill operations, concentrates non-degradable constituents such as metals. Evidence of this phenomenon associated with burning is documented by the elevated lead levels in many of the assessment trenches that were sampled by Leighton in 1993 (T1, T8, T9, T12, T13, T14, T15, T19, and T21). Leighton and Associates documented evidence of burned debris during their 1993 environmental investigation. It should be noted, however, that during their assessment the presence of "ash" was not documented in any of the 21 trench logs that were provided in the corresponding assessment report (Leighton, 1993). Similar investigations have shown that burning of certain wastes can generate ash, which may contain COCs including polycyclic aromatic hydrocarbons (PAHs), polychlorinated dibenzo-p-dioxin compounds (PCDDs), and polychlorinated dibenzofuran compounds (PCDFs). Burned materials were found in trench locations on the northwest and northeast portions of the Site. The trench logs also indicate that predominantly building materials (wood, concrete with re-bar, brick, and panel glass) was encountered on the central and northwest portion of the Site, while predominantly household refuse was encountered on the central and northeast portions of the Site. During March 2003, TSG conducted a focused remedial investigation (RI) was performed to assess the presence of PCDDs, PCDFs, PAHs, and Title 22 metals. Detectable levels of PCDDs were present in three of the five soil borings advanced during TSG's investigation (see Section 1 of Table 1). Those compounds were present in portions of the burned landfill materials. The chemical analyses of PCDDs and PCDFs were performed by Severn Trent Laboratories (STL) in Sacramento, California; whereas, the analyses for PAHs and Title 22 Metals were performed by American Analytics, in Chatsworth, California. EPA Method 8280A was used for the analysis of the PCDD and PCDF compounds. According to a representative from the DTSC, the method detection limits for those analyses were generally higher than other EPA 8280A analyses for the same compounds. In response to those concerns, TSG discussed the matter with STL and was informed that all analytical procedures were in strict adherence to the prescribed EPA protocols. A copy of STL's Data Quality Objectives are included in Appendix A. The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 6 Former Palm Springs Landfill Palm Springs, California March 3, 2004 According to STL representatives, the detection limits are calculated for each chemical isomer and are reported relative to background "noise" levels in the respective sample. Future analytical testing by EPA Method 8290 will satisfy the DTSC's desire for lower detection limits. No PCDFs were detected above the method detection limits within the samples collected during TSG's RI. Detectable concentrations of PCDDs were identified in the burned material located in the southwest (boring B1) and northeast (borings B3 and 66) portions of the former landfill area. Three samples contained PCDDs (131-10-10.5, 133-5.5-6, and 136- 10-10.5). Sample B1- 17.5-18, collected in native soil beneath landfill material, did not contain detectable PCDDs and PCDFs. Five samples from borings within the former landfill area were analyzed for PAHs. Each sample analyzed exhibited evidence of burned material. Four of the samples contained detectable PAHs. All detectable concentrations of PAHs were below EPA Region 9 Preliminary Remediation Goals (PRGs) and Soil Screening Levels (SSLs). Sampling in the former retention pond area confirmed that no sludge or pond bottom material was present in the areas assessed. Samples obtained during continuous coring showed soil characteristics similar to native soil, with no evidence of discoloration or other indications of pond bottom sediment. Previous assessments did not encounter sludge or pond bottom debris. These findings corroborate reports that the dried sludge was removed from the Site and used as fertilizer on local farmland. One sample from each of the four borings drilled in the former retention pond area was analyzed for CAM 17 metals. Eleven metals were detected in the samples. All detected concentrations were below the EPA Region 9 PRGs and SSLs. One sample from the former retention pond area (68-4-4.5) was analyzed for PAHs. Benz[a] anthracene was detected, but at a concentration below the PRG and SSL for that compound. 1.3 EE/CA EQUIVALENT DOCUMENT This RAW, in conjunction with the RI (modified format) and the Addendum to the RI report serves as an equivalent document to the Engineering Evaluation/Cost Analysis (EE/CA) document. 1.4 NATURE OF THE WASTES 1.4.1 Landfill Contents The existing surface of the landfill poses potential environmental risks to the local public. The Site is currently unsafe due to the widespread exposure of debris, with the potential for The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 7 Former Palm Springs Landfill Palm Springs, California March 3,2004 exposure to the COCs at the Site. The terrain is strewn with jagged construction debris, broken glass, and various types of corroded metal. In addition, pedestrians use the landfill property as a "short cut" between local destinations. The construction debris contained within the landfill is predominantly aggregate (rocks, concrete, and asphalt), scrap metal, and wood. The construction debris does not pose a threat to the environment or human health and will be reincorporated into the landfill mass. The majority of the household waste is non-hazardous; however, based on recent testing may pose a threat to the environment or human health. Investigations have shown that the household refuse contains limited quantities of household hazardous wastes (not likely to be significant based on the age of the landfill). Such wastes may be in the form of cleaners, detergents, paints, degreasers, thinners, and pesticides, as well as other materials such as batteries, pressurized containers, and unclassifiable items. Other items such as tanks, drums, or vessels will be managed as hazards until proven otherwise. During the unearthing of the landfill material, significant care will be employed to identify, log, and remove unknown tanks, vessels, and potentially dangerous containers. Such items found during the earthwork will be profiled and disposed in accordance with applicable laws and regulations. 1.4.2 Contaminants of Concern During the comprehensive assessment performed by Leighton in 1993, the physical and chemical aspects of the landfill were investigated. During their assessment, samples were collected and analyzed for constituents of potential concern (COPCs) including lead, TPH, VOCs, SVOCs, pesticides, PCBs, oil and grease, CCR metals, and biogenic material. In addition to the quantification of COPCs in the solid matrix, Leighton assessed the presence of soil gas within the landfill. The results of their soil (solids) investigations revealed exceedances in total lead levels. The soil gas studies showed that methane was not present above the 0.05% reporting level in any of the samples, nor were VOCs detected in the collected gas samples, A review of the historical records indicates that the site assessment completed by Leighton's in 1993 adequately addressed the presence of COPC for that period of time. Advancements in toxicology and chemistry revealed that additional COPCs might be present in the burned landfill material. Those COPCs included PCDD and PCDF compounds and PAHs. As a result of these advancements, the,DTSC required that the presence of these compounds be assessed prior to the remediation of the Site. The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 8 Former Palm Springs Landfill Palm Springs,California March 3,2004 During March 2003, TSG performed a data gap (remedial investigation) assessment to determine whether PCDDs, PCDFs or PAHs were present in the burned landfill material. During that assessment, TSG also assessed the presence of metals and PAHs in the area of the former retention ponds, located on the southern portion of the Site (Figure 2). In addition, at location B6, elevated concentrations of volatile organics were present as landfill gas. A flame ionization detector (FID) was used to monitor the presence of landfill gas during that assessment. An FID is a non-specific monitoring device and collectively measures the sum of the volatile organic compounds. The results from the March assessment revealed that the presence of PCDDs and PAHs were detected only in the burned landfill material, but were absent in the underlying native soil. The results of that investigation, in conjunction with the previous assessment data indicate that lead and PCDDs are the only two constituents of concern (COCs) at the Site. All other constituents are below regulated levels. Total lead levels in the landfill debris range from below detection limits to 1,470 mg/kg and soluble lead levels, by Title 22 Waste Extraction Test, range from 0.6 to 78.4 mg/I. No samples, however, were found to exceed RCRA's toxic characteristic leaching potential (TCLP) concentration of 5.0 mg/l. Copies of Leighton's tabulated data from their 1993 assessment is included in Appendix B. All COCs exceeding regulatory limits are contained to the debris itself. With the exception of background levels of metals that are inherently present in soil, no other COCs were detected in the native soil beneath the landfill material. This can be attributed to the facts that the environment of the landfill is extremely and and the COCs have low relative solubilities in rainwater. 1.5 ALTERNATIVE REMEDIAL TECHNOLOGIES CONSIDERED An evaluation of potentially viable remediation alternatives was performed in consideration with the ultimate value of the landfill property. The criteria for that evaluation included time/duration, permissibility, effectiveness, environmental protection, public health and safety, cost, and technological applicability. 1.5.1 No Action With the exception of the surface hazards, the Site assessment data indicates that the buried landfill material does not pose a significant risk to the environment in its current state. However, in order to redevelop the 36.6-acre parcel, the contents of the landfill must be properly compacted, the surface regraded, and drainage controls implemented. The alternative of No Action would not improve the environmental condition of the property nor would it enable the landfill portion of the property to be developed. No Action is therefore an infeasible alternative for the proposed development. The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 9 Former Palm Springs Landfill Palm Springs,California March 3,2004 1.5.2 Chemical Stabilization or Fixation Technologically, chemical stabilization or fixation may have some benefit; however, the property could not be redeveloped without significant earthwork and associated costs. The evaluation of those alternatives reveals that the cost to implement those technologies is three to four times greater than the value of the 'clean" property. 1.5.3 Excavation and Removal The option of excavating and removing the landfill material would be costly and have underlying hazards. The process of removing, sorting, and loading the landfill debris into trucks is generally an uncomplicated endeavor. However, once the waste material is on the road, potential complications increase. Such complications include increased truck traffic, a significant amount of dirt and dust deposited on local road surfaces, risks of traffic accidents, and the loss of miscellaneous trash during transport. Others whom endeavored into developing the Site considered this option. Assuming historical volumetric calculations are correct, approximately 500,000 yd3 of material would be removed from the Site. Using a density conversion of 1.2 tons/yd3, approximately 600,000 tons of waste would be disposed off site. Applying conservative costs for disposal ($31/ton), trucking ($8/ton), and earthwork ($5/ton), the cost would be approximately $26,400,000; significantly more than the value of "clean" land in the area. These prices take into consideration the fact that the landfill material must be disposed as a mixture of hazardous and non-hazardous waste. These costs therefore increase significantly due to the additional sampling, segregation, and profiling required for off site disposal. When considering the additional costs to import replacement fill soil, the price is even greater. In addition, there would be more than 60,000 trucks (waste haulers) entering and leaving the Site to accomplish that objective. These aggregate costs would be greater than the value of the property, making development impossible. 1.5.4 Excavation and Replacement This alternative entails removing the waste material, temporarily stockpiling, and replacing it within the original footprint of the landfill. As the material is removed, it would be examined and the materials documented in the field logs. Potentially hazardous wastes will be profiled, and if necessary, disposed in accordance with their waste characteristics. The waste would be redeposited outside the locations of potential structures, beneath paved parking surfaces. Prior to the redeposition, soil with lead concentration below 230 mg/kg (site- specific cleanup goal) from beneath the landfill would be removed to generate cover material and to provide the necessary space for the deposition of the debris. Once in place beneath the The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 10 Former Palm Springs Landfill Palm Springs,California March 3,2004 parking lot area, capping material (i.e., the soil mined from beneath the landfill) will be placed on top of the debris for geotechnical and environmental purposes. Considering all remediation alternatives and corresponding development plans, this option is most feasible. 1.6 REMEDIAL ACTION: SOURCE AREA EXCAVATION The proposed plan is simple and can be summarized as three basic components; removal of the landfill material, mining of soil from the basement, and redeposition of the landfill material and mined soil. All existing landfill material, with the exception of materials considered potentially hazardous (see Section 1.4.1), will be redeposited within the footprint of the existing landfill. The initial groundbreaking will expose the landfill debris. The mixture of debris and soil used as the original cap material will be removed to expose the native soil beneath the refuse. In the areas beneath the proposed parking areas, the basal soil will be sampled to verify that it contains total lead levels below regulated levels (See Section 1.6.1 for a discussion of those objectives). Following satisfactory confirmation sampling of the soil, it will be mined to depths ranging from 3 to 9 feet. The clean fill will then be temporarily stockpiled for later use as fill beneath the proposed structures and as capping material. In the areas beneath the proposed structures, the landfill debris will be removed, confirmation samples will be collected from the underlying soil, and if deemed clean, the areas will be prepared for backfill. Following successful confirmation sampling, the previously mined and stockpiled soil will be used to backfill the excavations to grade. This will permit the new structures to be built upon certified clean and compacted fill, without the risk of differential settling. This will also provide a 'clean" closure status in these areas. Details regarding the earthwork were provided in a letter prepared by GeoSoils, Inc., the engineering firm hired to perform the geotechnical services. Geotechnical details for the project are included in the report entitled Geologic and Geotechnical Engineering Report, prepared by GeoSoils Consultants Inc., dated July 22, 2003. That report is submitted under separate cover. Beneath the parking areas (generally in the central portion of the development), the overall excavations will be up to 9 feet deeper than those beneath the proposed buildings. These deeper excavations will accommodate the excess waste generated from the building areas. The debris/soil mixture will then be backfilled and compacted to approximately 3 feet below final grade. Finally, the mined soil will be used to cap the recomp'acted landfill material. Again, the process is simple and may only be complicated by the presence of potentially hazardous materials. 1.6.1 Cleanup Objectives The cleanup of the former landfill Site will be divided on the basis of occupied and unoccupied areas on the Site. The building will be occupied by workers and will lie atop native soil that is The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 11 Former Palm Springs Landfill Palm Springs,California March 3, 2004 free of contaminants that are present in the landfill material. The compacted landfill material will be restricted to the area beneath the central parking area at the Site (Figure 3). Following the removal of the landfill material, the footprints of the building will be sampled for the presence of lead to document the removal of the landfill waste. The soil will be sampled using X-Ray Fluorescence (XRF), with periodic confirmation by a fixed laboratory. The rationale for using XRF is based on the fact that it is a proven technology for the levels of lead found on the Site, and more importantly the simple economics of remediation work. At the scale of the proposed operation, only minutes of down time will cost thousands of dollars and could potentially prevent the project from being completed on budget. However, XRF is not as accurate or precise as the fixed laboratory and, therefore, the cleanup objectives will be conservatively low. We are proposing the cleanup objective of 230 mg/kg, which is less than one-third the PRG for an industrial setting. These proposed objectives also consider that the Site will be capped with pavement/buildings, and that lead is a non-volatile constituent. Within the central portion of the Site, the landfill material will be consolidated, compacted, and capped with clean fill soil. All debris (with the exception of drums, vessels, or containers shown to be hazardous) will be placed within the buried cell. In summary, all landfill material will be contained beneath a 3-foot cap of certified clean and compacted fill beneath the central parking area. The material beneath the structures will be verified to contain < 230 mg/kg lead and will consist of only native soil. A discussion of potential landfill gas control is included in Section 2.6. 1.6.2 Excavation The proposed project plan is composed of three basic components; removal and staging of the landfill debris, over excavation of soil within the debris cell area, and redeposition of the landfill material and mined soil. The excavation of landfill debris and native soil will be conducted in phases and it is anticipated that up to one quarter of the landfill area may be open for excavation during each phase. The initial groundbreaking will expose landfill debris within the area of the future debris cell. Based on previous assessment data, the depth of debris within the cell area averages approximately 15 feet. Landfill debris from the cell area will be removed using scrapers, track and/or wheel dozers, and staged temporarily on top of landfill materials to the north. Upon removal of all debris from the proposed cell area, soil underlying the debris within the cell area will be sampled to verify that total lead levels are below regulated levels. Upon verification of clean soil conditions, the cell area will be over excavated to a maximum depth of approximately 40 feet bgs. Clean soil removed from the cell area will be temporarily staged to the south of the cell within areas historically not occupied by landfill wastes. The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 12 Former Palm Springs Landfill Palm Springs, California March 3, 2004 Following complete over excavation of the debris cell to a depth of approximately 40 feet bgs, landfill debris which had been staged to the north of the cell during over excavation will be mixed with minimal quantities of soil derived from the site and backfilled into the cell (a considerable amount of soil is currently present in the landfill material). The debris/soil mixture will be backfilled into the proposed cell to aid in compaction and stabilization of the debris. Upon redeposition of all debris initially removed from the cell, the landfill debris to the north of the cell will be excavated, similarly mixed with soil and deposited into the cell. Landfill areas to the north, east, and northwest of the proposed debris cell (areas where structures are proposed) will be cleared of all landfill materials. Following the removal of all landfill materials from the areas outside of the debris cell, confirmation soil samples will be collected from the underlying soil, and if deemed clean, the areas will be prepared for backfill. Following successful confirmation sampling, the previously mined and stockpiled clean soil from the debris cell area will be used to backfill the excavations to grade. This will permit the new structures to be built upon certified clean and compacted fill, without the risk of differential settling. There will be no landfill material beneath any of the buildings. Within the debris cell area, a debris/soil mixture will be backfilled and compacted to approximately 3 feet below final grade. Clean soil, which was originally over excavated from the cell area, will be used to construct a three-foot thick soil cap over the recompacted landfill material. Upon completion of the redevelopment, the debris cell will also be capped with 4 to 6 inches of asphalt (future parking area for the shopping center). In addition, there will be a deed restriction for the property to prevent future construction above the landfill material. The advantages of using the soil mined from the Site are two-fold. First, the soil is easily accessible with the on-site construction equipment; and second, the soil is native to the Site and is structurally compatible (similar physical characteristics and properties) with the un- excavated soil. The use of structurally compatible soil improves the uniformity across the site and beneath the buildings. Several large buildings will be constructed for "big box" tenants. The foundations beneath these large structures will be concrete on grade. Therefore, it will be beneficial to have uniform soil compositions and uniformly compacted material beneath those slabs. At the end of each workday, temporary stockpiles will be properly secured. Care will be taken each day to place qualified cover material on top of the stockpiles at days end. That cover material will not have measurable VOC emissions and will consist of excavated soil from below the landfill materials. It is anticipated that the surface of the temporary stockpiles will be as secure or provide better protection than the current surface of the Site which contains exposed landfill debris. Additionally, the stockpile location(s) will be equipped with a perimeter silt fence at the downgradient location as an additional erosion protection. At the end of each workday, the stockpile surface condition, the condition of the silt fences, and any additional erosion The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 13 Former Palm Springs Landfill Palm Springs,California March 3,2004 control measures will be inspected and deficiencies will be corrected. Vehicles or other equipment will not be allowed to travel or stage near the stockpiles. 1.6.3 Soil Sampling Grid and Sample Rationale Along the base of the excavation, we are proposing to collect soil samples for analysis of lead at the intersection points of a 100-foot square grid (Figure 4). This sampling of over 133 locations will serve to verify the removal of the landfill debris and associated COCs. According to the engineering and geotechnical professionals, the excavation will have sloped walls to accommodate the ingress and egress of the large-scale earth moving equipment. Therefore, there will not be vertical or sub-vertical sidewalls. As documented in the body of analytical information, lead is present throughout the landfill material, with little correlation to the color or physical characteristics of the waste. In addition, soluble lead has been documented within the landfill debris. Therefore, lead is the logical driver for the verification sampling. The lead cleanup goals are conservatively proposed at 230 mgikg. Polychlorinated dibenzo-p-dioxin (PCDD) compounds represent the other COC at the PSL. Unlike the lead, the PCDD compounds are not believed to represent good candidate compounds for assessing cleanup criteria (clean verification). PCDD are predominantly present in the burned material, as documented by the sampling conducted in March of this year. That burned material is easily identifiable in the field and will be managed accordingly. Analytical information also confirmed that, where the PCDDs existed in the landfill material, the levels in the underlying soil were below detection. This is likely due to the PCDD compounds' low relative solubilities and the extremely and climate. Therefore, TSG does not propose to analyze for PCDD compounds during clean verification sampling. In addition to the above rationale, the logistics of the remedial efforts would be severely encumbered if PCDD were sampled along the floor of the excavation. The most significant factor is the required turn-around time for the analysis of dioxin compounds. With analytical turn-around times of 10 or more days, the earth moving operations would have to cease until results are obtained. This creates two obstacles in the remedial process. The first being the South Coast Air Quality Management District (SCAQMD) restrictions [Rule 1150] associated with an active excavation. There are time limits on the excavation or stockpiling activities. Delays on the order of 10 days may result in SCAQMD violations. The other obstacle would be the disruptions in the construction schedule. The slow analytical process would require significant stand-by time or demobilization from the Site until results are received. Either or both of these conditions would result in significant cost to the project, making it uneconomical. The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 14 Former Palm Springs Landfill Palm Springs, California March 3,2004 Coupled with the more widespread distribution of lead and the ability to visually identify debris with potential PCDD compounds, remediation can be completed successfully and safely by using lead for confirmation. 1.6.4 Material Segregation The earthmoving and construction activities will require very little material segregation. The landfill waste will be removed by earthmovers and temporarily staged on site. The underlying native soil will then be sampled for the presence of lead. After the soil is confirmed to meet the cleanup goals of 230 mg/kg, additional soil will be removed as surplus fill and to achieve the final elevation within the future landfill cell. Following removal of soil to the required depths, the landfill debris will be placed back into the area of the future landfill cell, compacted to meet local codes, and capped with a minimum of three feet of native soil. Unanticipated segregation will occur in the event that a vessel, tank, drum, or similar container is discovered in the landfill debris. Upon discovery of such items, the DTSC will be notified, and the objects will be immediately secured, inspected for damage, and prepared for analysis and characterization. The disposition of those items will be contingent their physical and chemical properties. 1.6.5 Offsite Disposal of Waste Items suspected or identified as hazardous wastes will be immediately placed in labeled, 40- cubic-yard, hazardous waste containers. The items may include tanks, vessels, or containers that are suspected of containing chemicals or other hazardous materials. The waste types and quantities of wastes will be inventoried and documented in the daily field logs. Disposal of hazardous or potentially hazardous wastes will be performed in accordance with all applicable laws and regulations. 1.6.6 Recycling Materials with recyclable value may be stockpiled and sold to an appropriate recycling facility. It is expected, however, that the cost to stockpile, move, and transport recyclable materials may be greater than their actual value. Recyclable materials such as concrete and other aggregate will not be considered for recycling. 1.6.7 . Deed Restriction The plan proposed herein will provide long term safeguards to the Site workers and local public by taking measures that mitigate the potential exposure to the COPCs at the Site. These measures include consolidating the landfill material to an area beneath the parking surface in the central portion of the Site. Thus, no landfill material will be present beneath any of the The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 15 Former Palm Springs Landfill Palm Springs,California March 3,2004 future buildings at the Site. To provide further safeguards, TSG is proposing a deed restriction that precludes future construction of buildings above the landfill material. In addition to that restriction, engineering controls will be implemented to prevent unqualified personnel from performing excavation or invasive work within the capping material that overlies the landfill material. 1.7 INITIAL STUDY/NEGATIVE DECLARATION In accordance with the California Environmental Quality Act (§ 21000 et seq., California Public Resources Code) and implementing guidelines (§ 15000 et seq., Title 14, California Code of Regulations), the DTSC or other qualified professional will prepare the Initial Study (IS) for this project. For this project, MGresolutions of Pasadena, California has prepared the IS. The IS will provide a brief description of the physical environmental conditions which exist in the area affected by the proposed project, and an analysis of whether or not those conditions will be potentially impacted by the proposed project. The IS will present an individual evaluation of 17 environmental resources that may be potentially affected. The following conditions will likely be evaluated for possibly affecting the project area in a negative manner as a result of the proposed project: ■ Aesthetics • Land Use and Planning • Agricultural Resources ■ Mineral Resources • Air Quality • Noise • Biological Resources • Population and Housing • Cultural Resources ■ Public Services • Cumulative Effects • Recreation • Geology and Soils • Transportation and Traffic • Hazards and Hazardous Materials • Utilities and Service Systems • Hydrology and Water Quality The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 16 Former Palm Springs Landfill Palm Springs, California March 3,2004 2.0 ENGINEERING DESIGN 2.1 SITE SURVEY Mainiero, Smith and Associates, Inc. prepared a professional boundary and topographic survey of the Site. A copy of their March 14, 2003 topographic map is included in Appendix C. 2.2 DESIGN BASIS The preliminary removal action and development engineering designs are currently being prepared and updated to reflect the most recent layout of the proposed development. A copy of the proposed development plan is included in Appendix D (permitting, architecture modifications, or engineering criteria may alter the plan). The respective professional firms will prepare the final engineering design documents following approval of this plan. Copies of those final architectural and engineering documents will be supplied to the DTSC. 2.3 DESIGN DRAWINGS Professional prepared engineering design documents will be generated for the earthwork and construction phases of the project. Copies of those plans and corresponding drawings will be supplied to the DTSC. 2.3.1 Emission Management and Dust Control During the remediation and construction phases, air monitoring will be performed to protect Site workers and to prevent dust and odor violations under the terms of the required air permits, primarily SCAQMD's, Rule 1150 Plan. Conditions in the required air permits are extremely stringent and essentially restrict any fugitive dust emissions. In an effort to meet these requirements at the Site, dust monitoring will be performed in the active and inactive work areas. Intensive dust monitoring and the subsequent mitigation program will ,serve as the foundation for the worker exposure monitoring. All work will be conducted with the proper emission permitting. Engineering control measures will be implemented to minimize nuisance and fugitive emissions from the work areas. The minimization of the potential emissions will be conducted in accordance with the aforementioned rules and regulations. Water trucks and on-site water supplies will be used to control dust and potential emissions while excavating and processing soil. If necessary, additional measures will be employed to reduce the emissions of VOCs and/or volatile petroleum hydrocarbons, if present. Under the conditions of SCAQMD Rule 1150, if emissions exceed designated thresholds, the SCAQMD will be immediately notified and mitigation of the fugitive emissions will be performed. The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 17 Former Palm Springs Landfill Palm Springs, California March 3,2004 2.3.2 Air Monitoring Air monitoring will be performed to protect the health of the workers and to comply with the required permits. Dust and potential landfill gases will be monitored throughout the remediation process. Details regarding the air monitoring procedures and protocol are provide in the Health and Safety Plan, dated November 5, 2003 and the Excavation Management Plan, also dated November 5, 2003. 2.3.2.1 Fugitive Dust Fugitive dust will be monitored within the work areas with real time dust monitoring devices and along the perimeters of the Site with high flow particulate collection equipment. Currently, TSG is working with the SCAQMD and equipment vendors to refine the equipment alternative. The screening process also requires the determination of whether the chosen equipment is capable of monitoring sufficiently low particulate concentrations. These detection levels must meet the data requirements in an effort to calculate potential exposure risks to workers and the local public. 2.3.2.2 Landfill Gases The field personnel will use a flame ionization detector (FID) or photo-ionization detector (PID) which can be calibrated to respond to nearly all organic compounds. The FID will be calibrated to a pre-determined mixture of methane and air at the factory. Each day the FIDs will be recalibrated using the manufactures' specifications and procedures. 2.4 LANDFILL CAPPING Following compaction of the landfill debris/soil matrix, a 3-foot soil cap will be placed above the landfill mass. The cap will be placed beneath the parking areas (where the landfill debris is located) and will provide the necessary engineering safeguards for geotechnical stabilization. In addition, the cap will serve as environmental insurance to protect the landfill from surface water infiltration and provide a buffer zone during utility installations. 2.5 DRAINAGE CONTROL Surface and subsurface drainage controls will be constructed across the proposed development. The City of Palm Springs will not require the use of an on site retention basin; therefore, all surface and subsurface drainage will immediately flow off site via underground piping and storm channels. The vast majority of the site will be covered by buildings or paved with parking areas, thus surface water will be channeled to stormwater conveyance lines and ultimately off Site. This will benefit the project by minimizing the amount of time that water resides on the property. The proposed development will also include planters located above the landfill material. These planters will be lined with impermeable polyvinyl chloride (PVC) The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 18 Former Palm Springs Landfill Palm Springs, California March 3,2004 liners and plumbed to the retention basin. This type of drainage control system is currently in use at other landfill sites in California and will prevent rain and irrigation water from entering the landfill material. 2.6 LANDFILL GAS CONTROL 2.6.1 Conceptual Evaluation In an effort to apply the correct technology and appropriate scale of that technology, TSG evaluated the objective of the landfill gas control system. In performing that evaluation, there were a number of questions that were considered while engineering the conceptual landfill gas control system. Nine questions and responses are presented below for your analysis: 1. Will the age and setting of the landfill have any effect on the production of landfill gas? Yes. The landfill was active during the early 1930s until the mid-1960s, receiving household refuse and construction debris, therefore, the age of that material ranges from approximately 40 to 70 years. Furthermore, the Palm Springs region is classified as extremely arid, the burial depth of the landfill material is shallow (approximately 21 feet), and the surface is capped with a thin veneer of sandy soil. These conditions significantly decrease the potential of residual landfill gas. 2. Will the content of the landfill have any effect on the production of landfill gas? Yes. The waste disposed in the landfill was predominantly household refuse and construction debris. With the exception of the wood contained in the construction debris, the remaining construction materials have little potential to produce landfill gases. The organic matter contained in the household waste does, however, have potential to produce landfill gases under the reducing conditions. The mass proportion of that organic matter is unknown and is the prime consideration in the design and function of the landfill gas control system. 3. Is there assessment data that documents the presence of landfill gas? Yes. The site assessments performed by Leighton and Associates, Inc. (Leighton) in 1987, 1988, 1989, and 1993 documented the presence of decaying organic matter. Leighton documented this by the presence of odors that were regarded as characteristic of decaying landfill refuse. Leighton also performed a soil gas study in May 1993 and determined that methane gas was non-detectable (<0.05 percent) in all ten of the randomly selected sample locations. In March 2003, TSG was on site to perform the last stage of site assessment. Drilling at location_ B6 (in the southwest portion of the landfill debris), volatile organic compounds were detected at 851 parts per million with a hand-held flame ionization detector, calibrated to 100 ppm methane gas. 4. Will the construction and/or remediation activities increase the potential of landfill gas accumulation? The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 19 Former Palm Springs Landfill Palm Springs, California March 3,2004 No. The remediation and construction activities should not chemically alter the condition of the landfill refuse/debris. The physical condition of the waste will be changed due to some homogenization and the final compaction. 5. Will the location of the landfill material relative to buildings increase the potential for landfill gas accumulation in those buildings? No. The proposed location of the buried landfill material will be set back from all buildings and will be restricted to the area beneath the paved parking surface. The proposed location of the landfill material will thus_decrease the potential for gases to accumulate beneath the future buildings. 6. Will the cover material and improvements that overlay the landfill material effectively seal the top surface of the landfill? Will they divert the flow of potential landfill gases? Unlikely. The cap material that will overly the landfill material will consist of 3 feet of native soil, approximately 6 inches of road base, and 3 inches of asphalt. The native soil at the Site is predominantly sand and is thus relatively permeable. The base material will also be coarse-grained and possess similar soil properties. The asphalt that ultimately serves as the parking surface is also permeable (10' to 10-7 cm/s; Lindeburg, 2001), thus enabling landfill gases to migrate vertically, directly to the atmosphere. It is highly unlikely, considering the rate of landfill gas production, that the overlying surface cap will divert those gases to the areas beneath the buildings. 7. Will there be a pressure differential between the soil in the parking lot and the soil beneath the buildings? Yes. It is likely that due to differential pressures inside the buildings caused by heating and cooling, induced air flow and pressure changes that result from the HVAC system, and chimney effects within buildings, the air pressure may be lower beneath the buildings. B. What are the permeabilities of the native soil relative to the foundation materials? The permeability of the native soil is in the range of 10-2 cm/s, whereas, the permeability concrete is in the range of 10-10 cm/s (Lindeburg, 2001). These values indicate that the permeability of the native soil is approximately eight orders of magnitude greater than the concrete foundations of the proposed buildings. It is, therefore, highly unlikely that landfill gases will migrate through the concrete foundations and accumulate in the buildings. 9. Will the engineering design be able to accommodate the potential accumulation of landfill gas beneath the buildings? Yes. The 4-inch diameter PVC vapor collection and conveyance piping will be installed on 50-foot centers. This design will be significantly over sized for the proposed application. The maximum flow through the 300-foot sections (Major A and Major 6, Figure 5) of that piping will be at least 400 standard cubic feet per minute (scfm) using conventional blowers and equipment. A conceptual engineering layout is illustrated on Figure 5 and general engineering specifications are presented on Figure 6 and in Appendix E. The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 20 Former Palm Springs Landfill Palm Springs,California March 3, 2004 2.6.2 Plan Overview Following placement and compaction of the landfill debris, a subsurface network of vapor recovery piping (well screen) will be installed within the base material beneath the concrete foundations of the future buildings and above the landfill material (Figure 5). The vapor collection piping will be placed approximately 1 to 3 feet below grade, with each section manifolded to dedicated monitoring points throughout the proposed development. 2.6.3 Piping Configuration For the vapor collection piping beneath the buildings, the screened segments will be constructed on 50-foot centers. In the parking area, above the landfill material, the screened segments of piping will be spaced on 200-foot centers. All collection piping will have a minimum diameters of 4 inches. The piping material will consist of SCH 40 PVC and the screen will be machine slotted for uniform consistency. It is anticipated that the primary trunk line(s) in the parking area will be 6- to 8-inch diameter, whereas the conveyance piping beneath the buildings will be 4-inch diameter(Figures 5 and 6). The proposed trenches will be at least 6 inches wider and deeper than the diameter of the buried pipes. For example, 4-inch piping will be installed in trenches with minimum dimensions of 10-inchs by 10-inchs. The final engineering design and dimensions for the piping network and associated equipment will be provided to the DTSC following the architectural design and construction engineering for the development. At the terminus of the individual vapor collection segments that underlie the buildings, vaults will be positioned directly adjacent to the buildings. The vaults will contain monitoring ports (air velocity and vacuum), sample valves with hose barbs, and ball valves retrofitted with VitonTm seals (Figure 6). Those vaults will also be set up to accommodate connections for mechanical vapor extraction piping (if elevated concentrations of well gases accumulate). That piping would extend from the vaults, along the exterior of the buildings, and onto the roof tops where the blowers can be mounted. For the large vapor collection network constructed beneath the parking lot, there will be individual well vaults that contain similar monitoring ports and equipment to those on the individual networks. In addition, the large network will be manifolded to a single location adjacent to Building Major F (or a similar structure). At that vault, there will be another set of sample ports and valves to enable the field technicians the ability to monitor the performance of the entire vapor collection network. 2.7 LANDFILL GAS RECOVERY SYSTEM MONITORING Immediately following the construction of the development, a monitoring program will be implemented to determine if methane or other gases are accumulating in the recovery network. This monitoring shall be performed initially on a monthly basis for the first year and then The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 21 Former Palm Springs Landfill Palm Springs, California March 3,2004 quarterly thereafter. Monitoring will continue on a quarterly basis until it is proven that gas buildup is not occurring or at which time concentration trends are established. In the event that gas concentrations approach explosive or toxic levels or exceed odor thresholds, low flow vacuum pump(s) will be connected to the piping network to purge the gases from the vapor collection piping. These types of pumps can be solar, wind, or electrically powered to simply induce a low pressure pathway through which the gases are discharged. In the event that system upgrading is warranted, the piping network will be retrofitted with risers that attach to the outside walls of the buildings. The vent risers will then be manifolded to the low flow pumps to remove the accumulated gases. As discussed above, the landfill gas recovery system will be monitored for the presence of potentially toxic, regulated, and fixed gases. The vapor recovery network will be subdivided into approximately 25 segments, each with vaults containing valves and sample ports for collecting gas/vapor samples. The sample ports (one for each leg of the piping network) will be monitored in the field with a hand-held FID, and gas/vapor samples will be collected in containers for laboratory analyses. In the event that regulated gases or vapors are present in the piping, the SCAQMD will be immediately notified and permits will be procured, as required. It is more likely, however, that the accumulation of gases/vapors will be negligible, resulting in a reduced monitoring frequency that satisfies DTSC or other governing agencies. The landfill gas monitoring program will continue indefinitely or until the DTSC determines that the program can be scaled back or discontinued. The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 22 Former Palm Springs Landfill Palm Springs, California March 3, 2004 3.0 SCOPE OF CONSTRUCTION ACTIVITIES 3.1 PERMITTING All work performed during the remediation and redevelopment of the property will comply with City, State, and Federal regulations. Project specific information and the related agencies are presented in the following sections. 3.1.1 Excavation An excavation permit will be required for the earthwork. The permit will be obtained from the City of Palm Springs Department of Building and Safety. During'the remediation phase of the project, soil management and ultimate compaction will be a critical component of the approved development and, therefore, these activities will involve the City's inspection team. 3.1.2 Water The Desert Water Agency (DWA) is the water supply agency for the subject area. A permit for water usage and a temporary water meter will be required for the on site water supply. The selected contractor(earthwork)will be responsible for procurement of the water permit. 3.1.3 Electrical A temporary power pole will be required for electrical service. Electrical power will be used to energize the temporary on-site office/trailer, for running and charging equipment, and for night lighting, if necessary. The electrical permit will be obtained through the City of Palm Springs. The selected contractor(earthwork)will be responsible for procurement of the water permit. 3.1.4 Air The SCAQMD is responsible for the air quality related issues during the removal and recompaction of the landfill material. . The SCAQMD rules that apply to the proposed work include Rule 402, Rule 403, and Rule 1150 for nuisance, fugitive dust, and landfill excavation monitoring. Under Rule 1150, the SCAQMD issues site specific permits which require the holders to monitor the perimeter and excavation face for landfill gases such as methane, sulfur compounds, and any speciated non-methane hydrocarbons such as benzene and vinyl chloride. The permit also limits the amount of work face that can be excavated at any given time. The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 23 Former Palm Springs Landfill Palm Springs,California March 3,2004 3.1.5 Building The City of Palm Springs will not likely play a significant role in the remediation phase of the project; however, they will be intimately involved in the redevelopment. There will be numerous permits required, including electrical, mechanical, structural, plumbing, and others. Prior to approval of the proposed development plan, the City's planning department will review, modify, and approve the proposed development. Construction permits will be the responsibility of the general contractor(builder). The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 24 Former Palm Springs Landfill Palm Springs, California March 3,2004 4.0 HEALTH AND SAFETY TSG considers proper health and safety to be a foremost concern. In accordance with the Occupational Safety and Health Administration (OSHA), all personnel involved with the field activities will be required to comply with the conditions set forth in 29 CFR 1910.120, including medical surveillance/monitoring, 40-hour training with current 8-hour refreshers, and applicable supervisory training. 4.1 HEALTH AND SAFETY PLAN A site specific Health and Safety Plan (HASP)was prepared by TSG on December 15, 2003. It was written as a "stand alone" document and was supplied to the DTSC under separate cover. It will be used as a guidance document by properly trained TSG employees, affiliates, and experienced TSG subcontractors. All TSG subcontractors will be required to follow the requirements in HASP. As directed by the DTSC, any contractors not falling under the submitted HASP will be required to submit their own plan to the DTSC for approval. The potential physical and chemical hazards have been clearly documented in the HASP, which has been developed specifically for the former PSL remediation project. Any new condition or unanticipated danger that may be considered a potential risk will be immediately presented to the DTSC, and remedies/safeguards will incorporated into the health and safety program. 4.1.1 Engineering Controls and Personal Protective Equipment Dust mitigation will be required under Rule 1150 for the construction activities at the former landfill site. These engineering controls will be active until the environmental or worker exposure risks are mitigated, or at which time the phase of work no longer warrants active dust mitigation. In addition to dust management, engineering controls will also be implemented to reduce the risks associated with heat exposure. Such controls will include modified work times and durations, shade systems, and cool down zones with ice (or equivalent). Engineering controls with be the first and mandatory step to ensure a safe work environment. 4.1.2 Air Monitoring Air monitoring will be conducted to protect the health and safety of the on site workers and the local public. Initially, the air monitoring program will be excessively stringent to in an effort to establish a baseline for potential dust and VOC exposures. In addition to real-time particulate monitoring in the work areas, perimeter dust monitors will be used to collect dust samples for chemical analysis. The concentration of COCs in the dust will be documented and compared against maximum permissible exposures for total particulates and lead, Vapor samples will The Source Croup,Inc, FINAL REMOVAL ACTION WORKPLAN Page 25 Former Palm Springs Landfill Palm Springs, California March 3,2004 also be collected in laboratory-supplied containers and analyzed for the presence of VOCs and fixed gases. Following review of the field monitoring data, and with concurrence from the DTSC, PPE will be down graded if the risks are sufficiently low. In the event that engineering controls are not capable of mitigating potential risks, adequate PPE will be worn until the work environment is proven safe. 4.1.3 Soil Ingestion Only trained and qualified workers will be on site during the remediation activities. All Site workers will be required to comply with the conditions of the health and safety program. That includes usage of proper PPE, proper personnel decontamination, eating and/or smoking in designated areas (following decon), and management of field equipment, gear, and garments. 4.2 EQUIPMENT DECONTAMINATION Strict decontamination procedures will be employed for the remediation activities. The objectives of the decontamination will be to prevent the introduction of contaminants onto areas designated as clean zones. These clean zones include on- and off-site areas that will not require personal protective equipment. In addition, the decontamination procedures are designed to prevent cross-contamination of equipment, materials, and ultimately personnel. 4.3 SITE CONTROLS AND MANAGEMENT Access to restricted areas such as the work areas will be strictly controlled during all working phases. Health and Safety measures will be implemented and governed to minimize the potential exposure to unprotected personnel (e.g., vendors/suppliers, visitors, regulators, and workers). Governing these restricted areas will also encompass the necessary medical surveillance, safety training, and maintenance of personal protective equipment. In addition, to further minimize exposures to workers and potential off-site receptors, the stabilization/fixation will be performed indoors, within an existing building on site. Ingress to the Site will require visitors to sign a visitor's log, which will be maintained for all personnel permitted to enter the different work areas. Physical barriers will be installed between potential exposure zones, with area-specific sign-in logs for tracking the personnel and equipment, in accordance with the HASP. The daily activity log, maintained by the Site Supervisor, will contain a record of all significant activities, including lists of personnel, visitors, vehicles, and equipment entering and leaving the Site. The Site Supervisor's activity log will also document the decontamination procedures, as the specific resource is moving through the decontamination zones. The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 26 Former Palm Springs Landfill Palm Springs,California March 3,2004 5.0 PROJECT SCHEDULING TSG shall notify the City and all involved regulatory agencies, including the SCAQMD and the DTSC, prior to beginning work. The SCAQMD shall be notified in writing when the excavation commences and when it is completed. Work is expected to continue on consecutive working days, but depending upon the progression of the work, interruptions in excavation may occur intermittently. Excavation shall normally be conducted between the hours of 6:00 a.m. and 6:00 p.m. If changes in working hours or days are required because of delays encountered by inclement weather, the SC AQMD will be notified in writing as soon as possible following the change in schedule. Excavation is expected to commence in the first quarter of 2004, after completion of all required permitting. Geiger anticipates a project start date of late March, 2004. The estimated time to complete the project is 80 working days. The anticipated project completion date is late July, 2004. The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 27 Former Palm Springs Landfill Palm Springs, California March 3,2004 6.0 REMOVAL ACTION PROJECT MANAGEMENT PLAN Title/ Responsibility Name Phone Number DTSC/ Project Manager Stephen Cutts (818) 551-2178 Geiger, LLC/Proponent Mark Gabay (310) 247-0900 Geiger, LLC/Proponent Brett MacDonald (661) 755-3689 Program Manager TSG/Project Manager Jim Evensen, R.G., C.HG. (805) 373-9063, ext. 206 TSG/Quality Assurance Mark Labrenz, R.G., C.HG. (805) 373-9063, ext. 203 Manager TSG/Engineering Daniel Grasmick, P.E. (805) 373-9063, ext. 216 TSG/Staff Steve Elliott (805) 373-9063, ext. 208 TSG/Staff Ted Lizee (805) 373-9063, ext. 215 Contractor(Drilling Company) Valley Well Drilling (805) 648-6385 Contractor(Laboratory) American Analytics (818) 998-5547, ext. 318 Contractor(Laboratory) Pace Analytical (888) 990-7223 Contractor(Disposal) TBD - Dependent upon TBD- Dependent upon analytical results analytical results The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 28 Former Palm Springs Landfill Palm Springs, California March 3,2004 7.0 IDENTIFICATION OF CONTRACTORS AND REQUIREMENTS The contractors for implementation of the RAW have not been selected at this time. Geiger or TSG will submit the names of the contractors to the DTSC after the selections have been made. The following standard selection requirements will be implemented. The contractors must: • be trained and in full compliance with OSHA regulations; • be qualified to perform their respective duties. References will be required to confirm such capabilities; • supply proper licenses for their respective duties; ■ carry adequate insurance for their required duties; • not discriminate against workers for any reason; ■ have adequate cash flow to accommodate the scale of this project; • supply a list of subcontractors for pre-approval; • have adequate resources to complete the project on time and budget; and ■ disclose any previous violations or citations for consideration. The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 29 Former Palm Springs Landfill Palm Springs, California March 3, 2004' 8.0 COMMUNITY RELATIONS PLAN The Proponent will work with the DTSC to determine whether a Community Relations Plan is necessary. The plan may be as simple as a statement of facts and objectives, or the plan may be adopted from the environmental impacts report or mitigated negative declaration. Communication with the DTSC will continue in an effort to preserve the streamlined and expedited approach. TSG and Geiger will seek further advice from the DTSC on this matter. The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 30 Former Palm Springs Landfill Palm Springs, California March 3, 2004 9.0 STANDARD LIMITATIONS All work was performed under the supervision of a California Registered Geologist as defined in the Registered Geologist Act of the California Code of Regulations. The information contained in this remedial action plan represents TSG's professional opinions, and is based, in part, on information supplied by the client. These opinions are based on currently available information and are arrived at in accordance with currently accepted hydrogeologic and engineering practices at this time and location. The Source Group,Inc. FINAL REMOVAL ACTION WORKPLAN Page 31 Former Palm Springs Landfill Palm Springs, California March 3,2004 10.0 REFERENCES EBI Services, Inc., 1998, Ramon Road Landfill Project, A Comprehensive Overview of Historical and Current Remediation Plans and Regulations, June 6, 1998. Geo-Sec, Inc., 1991, Additions to Groundwater Monitoring Well System, Palm Springs Landfill, Gene Autry Trail and Ramon Road, Riverside County, California, March 11, 1991. Leighton and Associates, Inc., 1987, Geotechnical Investigation for Proposed Automobile Dealership Located at the Northeast Corner of Gene Autry Trail and Ramon Road, Riverside County, California, February 9, 1987. Leighton and Associates, Inc., 1988, SWAT Proposal for Palm Springs Landfill, Gene Autry Trail and Ramon Road, Riverside County, California, September 28, 1988. Leighton and Associates, Inc., 1993, SWAT Report for the Palm Springs Landfill, Gene Autry Trail and Ramon Road, Riverside County, California, March 31, 1989. Leighton and Associates, Inc., 1993, Interim Data Report on an Environmental Site Assessment for Potential Hazardous Materials/Waste Contamination, Palm Springs Landfill, Northeast Corner of Gene Autry Trail and Ramon Road, City of Palm Springs, County of Riverside, California, August 6, 1993. Lindeburg, Michael R., P.E., 2001, Civil Engineering Reference Manual, Eighth Edition, Professional Publications, Inc., ISBN 1-888577-66-5. Strata Technologies, Inc., 1988, Solid Waste Air Quality Assessment Test Plan, City of Palm Springs, Gene Autry Trail/Ramon Road, Inactive Landfill, September, 1988. Tri Coast Engineering, 1988, Evaluation of Regulatory and Cost Considerations for Proposed Landfill Excavation/Removal, Gene Autry Trail/Ramon Road Landfill, Palm Springs, California, March 1988. The Source Group, Inc., 2002, Remedial Action Plan, Former Palm Springs Landfill, Intersection of Gene Autry Trail and Ramon Road, Palm Springs, California, June 24, 2002. The Source Group, Inc., 2003a, Soil Sampling and Analysis Plan, Former Palm Springs Landfill, Intersection of Gene Autry Trail and Ramon Road, Palm Springs, California, February 6, 2003. The Source Group, Inc., 2003b, Remedial Investigation Report, Former Palm Springs Landfill, Intersection of Gene Autry Trail and Ramon Road, Palm Springs, California, June 18, 2003. The Source Group, Inc., 2003c, Addendum to Remedial Investigation Report, Dated June 18, 2003, Former Palm Springs Landfill, Palm Springs, California, July 3, 2003. The Source Group, Inc., 2003d, Draft Removal Action Plan, Former Palm Springs Landfill, Intersection of Gene Autry Trail and Ramon Road, Palm Springs, California, July 25, 2003. United States Environmental Protection Agency, 1994, Estimating Exposure to Dioxin-Like Compounds, EPA/600/6-88/005Ca, June 1994. The Source Croup,Inc. FINAL REMOVAL ACTION WORKPLAN Page 32 Former Palm Springs Landfill Palm Springs, California March 3, 2004 United States Environmental Protection Agency, 2003, Proposal for the Adoption of the Revised Toxicity Equivalency Factor(TEFWHo.97) Scheme, Public Review Draft, January 2003. The Source Croup,Inc. Table 1 Revised Toxicity Equivalency Calculations Former Palm Springs Landfill sampled March 26.27,2003 Compound Names Results(units In ng/g=pg/kg) Abbreviated Full CAS Registry No, B2C-o.5-1 BI-10-10.5 Ba-6.5.6 BB-1040.5 B&B.5.9 2,3,7,0-TCDD 2,3,7,8-Te1rachlomdibenzo-p-dioxin 1746-Dl-6 <0.0066 <D.098 <0.0056 c0.018 <0.0096 1,2,3,7,8-PeCDD 1,2,3,7,B-Pentachlorodibenzo-p-dioxin 40321-76-4 <DQ26 <0.91 <0.046 <0.10 10.063 1,2,3,4,7,8-HxCDD 1,2,3A,7,8-Hexachlorodibenzo-p-dioxin 39227-28-6 <0015 <D.17 <D.023 <0.033 <0.054 1,2,3,6,7,8-HxCDD 1,2,3,6,7,8-Hexachlorodibenzo-p-dioxin 57553-85-7 <0017 <D.58 <0.025 <0.12 10.054 1,2,3,7,8,9-HxCDD 1,2,3,7,8,9-Hexachlorodibenzo-p-tlioxin 19408-74-3 <D.014 <1.1 <0.027 <0.20 <0.044 1,2,3,4,5,7,8-HpCDD 1,2,3,4,6,7,8.Heptachlorodibenzo-p-dioxin 35822-46-9 <0.085 1.9 10.46 10 <0.28 =0 OCDD 1,2,3,4,5,9,7,8-Octachlorodibenzo-p-tlioxin 326E-87-9 <0.42 7.5 2.4 91 10.63 w 2,3,7,E-TCDF 2,3,7,8-Teirachlorodibenzofuran 51207-31-9 <D 0039 10.03B <D.0068 <0.16 10.015 rn 1,2,3,7,8-PeCDF 1,2,3,7,6-Penlachlorodibenzofuran 57117-41-6 <D.010 <0.13 <0.010 <0.027 <0.019 2,3,4,7,8-PeCDF 2,3,4,7,6-Penlachlorodibenzofuran 57117-31-4 <D.011 <0A7 <0.014 <0.045 <0.026 1,2,3,4,7,B-HxCDF 1,2,3,4,7,8-Hexachlorodlbenzofuran 70648-26-9 <D.0077 <0.17 <0.017 -0.025 <0.022 1,2,3,6,7,8-HxCDF 1,2,3,6,7,8-Hexachlorodibenzofuran 57117-44-9 <0,0059 <0.20 <0.020 -0.044 <0.030 2,3,4,6,7,E-HxCDF 2,3,4,6,7,8-Hexachlorodibenzofuran 60051-34-5 <O.OD78 <D.22 <0.015 <0.12 <0.049 1,2,3,7,8,9-HxCDF 1,2,3,7,0,9-Hexachlorodibenzofuran 72918-21-9 <OA15 <0.19 <0.017 -0,070 <0.055 1,2,3,7,8-HpCDF 1,2,3,4,6,7,8-Heplachlorodibenzofumn 67562-39-4 <0,021 <D.24 <0.014 <0.22 <0.059 1,2,3,4,7,6,9-HpCDF 1,2,3,4,7,B,9-Heptachiorodibenzofuran 55673-89-7 <0.040 <0.16 <0,026 <0.13 <0.056 OCDF 1.2,3,4,5,6,7,8-Oclac his mdlbenzofuren 39D0l-02-0 <0.064 <0.27 <0.051 10.32 <0.086 Compound Names One-Half Detection Limit(units In nglg=pg/ky) Abbreviated Full CAS Registry No. B2C-0.5-1 81-10-10.5 B3.5.5.6 86-1040.5 85-8.5-9 2,3,7,8-TCDD 2,3,7,8-Tetmchlorodibenzo-p-dioxin 1746-01.6 0.00m 0.049 0.0028 0.009 0.0048 1,2,3,7,8-PeCDD 1,2,3,7,8-Pentachlorodibenzo-p-dioxin 40321-76-4 0.013 0.455 0.023 0.05 0.0415 1,2,3,4,7,8-HxCDD 1,2,3,4,7,8-Hexschlorodlbanzo-p-dioxin 39227-28-6 0.0075 0.O85 0.0115 0.0165 0.027 1,2,3,6,7,6-HxCDD 1,2,3,6,7,8-Hexachlorodibenzo-p-dioxin 57653-85-7 0.00B5 029 0.0125 0.06 0.027 1,2,3,7,B,9-HxCDD 1,2,3,7,6,9-Hexachlorodibenzo-p-dioxin 19408-74-3 0.007 0.55 0.0135 0.1 0.022 1,2,3,4,6,7,8-HpCDD 1,2,3,4,6,7,B-Heptachlorodibenzo-p-dioxin 35822-46-9 0.0425 1.9 0.23 10 0.14 o OCDD 1,2,3,4,5,6,7,8-Octachlomdibenza-p-dioxin 3268-87-9 0.21 7.5 2.4 91 0.315 u. 2,3,7,8-TCDF 2,3,7,8-Tetrachlorodibenzofumn 51207-31-9 0.00195 0.019 0.0034 0.O5 0.OD75 m v+ 1,2,3,7,8-PeCDF 1,2,3,7,6-Penlachlorodibenzofuran 57117-41-6 0.005 0.065 0.005 0.0735 � 0.0095 2,3,4,7,B-PeCDF 2,3,4,7,6-Penlachlomdibenzofuran 57117-31-0 0.0055 0.085 0.007 0.0225 0.013 1,2,3,4,7,8-HxCDF 1,2,3,4,7,8-Hexachlorodlbenzofuran 70648-26-9 0.00385 0.O85 0.0085 0.0125 0.011 1,2,3,6,7,8-HxCDF 1,2,3,6,7,8-Hexachlorodibenzofumn 57117-44-9 0.00295 0.1 0.01 0.022 0.015 2,3,4A7,3-HxCDF 2,3,4,6,7,8-Hexachlorodibenzofuan 60851-34-5 0.0039 0.11 0.0075 0.05 0.0245 1,2,3,7,8,9-HxCDF 1,2,3,7,8,9-Hexachlorodibenzofuran 72918-21-9 0.0075 0.095 0.0085 0.035 0.0275 1,2,3,7,B-HpCDF 1,2,3,4,6,7,5.Heptachloredibenzofuran 67552-39-4 0.0105 0,12 0.007 0.11 0.0295 1,2,3,4,7,8,9-HpCDF 1,2,3,4,7,8,9-Heptachlorodibenzofuran 55673-89-7 0.02 0.08 0.013 0.055 0.028 - OCDF 1.2,3,4,5.6,7,11-Dclachlarodibonz0fu ran 39D01-02-0 1 0.032 1 0.135 1 0.0255 0.16 0.043 Compound Names Adjusted Concentration Relative to TEF(pg/kg) Abbreviated Full TEF' B2c-9.5.1 el-10-10A B3-5.5-6 136-10-10.6 B5-8.5.9 2,3,7,E-TCDD 2,3,7,8-Tetrachlorodibenzo-p-dioxin 1 0.0033 D.049 0.0028 0.009 0.0048 1,2,3,7,8-PeCDD 1,2,3,7,8-Pentachlorodibenzo-p-dioxin 1 0.013 0.455 0.023 0.05 0.0415 1,2,3,4,7,E-HxCDD 1,2,3,4,7,&Hexachlorodibenzo-p-dioxin 0.1 0.00075 0.0065 0.00115 O.OD165 0.0027 1,2,3,6,7,8-HxCDD 1,2,3,6,7,8-Hexachlorodibenzo-p-dioxin 0.1 0.00085 0.029 0.00125 0.00fi 0.0027 1,2,3,7,8,9-HxCDD 1,2,3,7,8,9-Hexachlorod1benzo-p-dioxin 0.1 0.0007 D.D55 0.0g1.5 0.01 0.0022 1,2,3,4,6,7,8-HpCDD 1,2,3,4,6,7,6-Heptachlorodibenzo-p-dioxin 0.01 0100043 D.019 0.0023 0.1 0.0014 OCDD 1,2,3,4,5,6,7,8-Dmachlorodibenzo-p-dioxin 0.0001 0.00002 0.00075 0.00024 0.0091 0.00003 0 2,3,7,8-TCDF 2,3,7,8-T8Im61omdi1eozofuran 0.1 0,00120 0.0019 0.00034 0.001 1, 1075 y 1,2,3,7,8-PeCDF 1,2,3,7,B-Penlachlorodibenzofuran 0.05 0.00025 0.00325 0.00025 0.0DOG8 0.00048 m 2,3,4,7,&PeCDF 2,3,4,7,8-Pentachiorotlibenzofuran 0.5 0.00275 0.0425 0.0035 0.01125 0.0065 1,2,3,4,7,8-HxCDF 1,2,3,4,7,6-Hexachlorodibenzofuran 0.1 0.00039 0.0085 0.00085 0.00125 o.0D11 1,2,3,6,7,8-HxCDF 1,2,3,6,7,8-Hexachlorodlbenzofuran 0.1 0.00030 0.01 0.001 0.0022 0.0015 2,3,4,6,7,8-HxCDF 2,3,4,6,7,8-Hexachlorodlbenzofuran 0.1 0.00039 0.011 0.00075 0.006 0.00245 1,2,3,7,6,9-HxCDF 1,2,3,7,8,9-Hexachlorodlbenzofuran 0.1 0.00075 D.0095 0.00085 0.0035 0.00275 1,2,3,7.B-HpCDF 1,2,3,4,6,7,8-Heptachlorodlbenzofuran 0.01 0 cool 1 0.0012 0.00007 0.0011 0.00030 1,2,3,4,7,8,9-HpCDF 1,2,3,4,7,8,9-Heptachlorodibenzofuran 0.01 0.0002 0.0Doe 0.00013 0.00065 0.00028 DCDF 1,2,3,4 5,6,7,8-Octachloradib.nzofuran 0.001 0.00D00 0.00001 0.00000 0.00002 0.00000 Totals 2.44E-02 7.05E-D1 3.98E-02 I 2.20E-01 7.14E-02 Maximum Permisl6le Exposure of TCDD in Ambient Air' 4.50E-08 pg/ms ,._..._._.__.................................................__......._.._...._......-.._...__.., Maximum Total Adjusted Concentration as TCDD6 7.05E-01 pg/k9 �r7.05E-gpg/kgl_r1.32E+g9 m'1=5.34L•-lOpg/m' Default Particulate Emission Factor 1.32E+09 m/k L k J L k ) Calculated Parilculale Emissions as TCDD'_ 5.34E-1D pg/ms ""---.........._..-..._...._...........__..._............ .-_._.__.....__.__-..i Notes: 1. One-half of method detection limit for analyte used for quantacation. 2. Sources: EPA160016-8131005Ca,Estimating Exposure to Dioxin-Like Compounds,US EPA,June 1994 and US EPA Proposalfw the Adoption of the Revised Toxicity Equivalency Factor(TEFw,,w)Scheme,Public Review Draft,January 2003. 3. TEF=Toxicity Equivalency Factor for CDDs and CDFs relative to 2,3,7,8-Tetrachlorobenzeno-p-dioxin(TCDD). 4. Maximum exposure from EPA Region 9,Preliminary Remedial Goals,Ambient Air Exposure,October 1,2002. 5. Summation of Adjusted Concentration of CDOs and CDFs to establish cumulative risk factor. 6. Calculated by using the default Particulate Emission Factor,USEPA Soil Screening Guidance:Technical Background Document, 1996(EPA/540/R-951128). Methodology: Laboratory analytical results are multiplied by compound-specific TEF and compared to PRG for 2,3,7,8-TCDD. This method produces analogous cleanup goals forthe compounds wHhout established PRGs. Rev TEF Table Final7,25-03.x1s Page 1 of 1 The Source Group,Inc. CALIENTE dt E S E R V A T 10 N z' I 1406 39 :: El z �C ? c18LTr� rrr ..................:::111 ,. . PALM SPRINGS PALM PR I N G i L _ "^ •• MUNICIPAL AIRPORT MUNICIPAL All PORT - ass RAMOIS'(':ia via " S .E:�"L43�HL81 — _ LJ•w �� • SITE 'Theater :- A CI :i:d AGUA C LIEN TE - k f• k"::;ls. L --i ubstation 20 ';i�2-- -a z Park, Wa -- 93^"'7 ,ewage` - •I N D I A N RI S E R V A T 10 .�s Source: U.S.G.S.7.6-Minute Cathedral City and Palm Springs Quadrangle,Photorevised 1981/1988 Site Address: Northeast Comer of Ramon Road and Gene Autry Trial Scale:1:2000 DRAFTED BY: CHECKED BY: PROJECT NO: FIGURE NO: SITE ID: JPW JME 02-GLL-001 FORMER 1 PALM The Source Group,Inc. SPRINGS 501 Martin LANDFILL Suite 112B DWG DATE: REVN/ATE: CLIENT: TTTLE: Thousand Oaks,CA 91360 2/03l03 N/A FILENAME: Geiger,LLC SITE LOCATION MAP sLM-Palms fin s.d= - — - -- - - — — — I ' W TO 211.5' TDT 117.0' TOT 18.0\ LEGEND Cf / 211 TO_ 3 I — — Limits of Existing Landfill / TDT 119.0' I I --— Property Boundary mB3 O B4 Approximate Limit of J B8o S I E Construction Debris E T-10 T-11 T-12 7 l/ T-15 T-13 Approximate Location of E TO - 14.0' TO - 16.0' TO - 14.0' TO - 20.0' T-14 TO - 210 w Exploratory Trench TO ITO - 13.8' Q T-27 Indicates Total Depth of Bias T-16 VI , TD - 11.5' Trench TO - 18.0' E T-9 Approximate Location of TD - 12.0' I I Bi m Borings B5 I ,�y } �U]. p E\ 82-BoVm B2-A `� T-8 T-5 CFa I I Approximate Limit a Retention Pond Area Q T-8 T-7 TO - 20.5' TO - 17.5' TO - 13.0' TO - 12.0' fn Source, Leighton & Associates, Inc. \ I I ? 1993. Plate 1 \ I J I XTD -T 2 T-2 T-3 0.0, T-4 \ TD - 11.5' TO - 2.1' TO - 1 '91 r------------------ _1 I I � N w I ® 87 m B9 I Ez mB8 coI Ia 0 B10 w \'�---- ————— --1 a so 300 0 ' RETENTION POND AREA APPRO%IMAT® fltE RWE PMUE- LL ------ �-----�-��- - 6/01/03 PSL.DWG 02-GLL-002 BORING LOCATION MAP RAMON ROAD FORMER PALM SPRINGS LANDFILL Y PALM SPRINGS CALIFORNIA S FlCIIPE ' The Source Aroua,Inc. 2 IL II II IIIiI IIII }i , - p —I - -.-- --.- ``TT ITI>T?)U:jl I71 I'1711f11TFl_ tl NMbR C N I ae,oms tl MA.arte MAIORA -JTPTi1T11111^k�.gf��. $ � a,mel mw Ili ITT1 T E I J I FW — E _ _`>- � J illTl `��, •"„�, 3� T ��+ f IIII 'C O� IG I� T 71M, 7171 I I I ri i77M _ — rWi ��t��-�I�,fI� IIEfi1L 3 EIL 1 } ryµ-0 — st$�, � _ 1 mov �IIiIITIITIII) lamps _ NITIIITI�1 II I I I 4 v RAMON ROAD LEGEND ———— PROPOSED UMOS OF BURIED DEBRIS D tw aoD APPROXIMATE SCNX IN FEET NOTES, drTE: TlE tw1[ rmMccT xa: INFORMATION FOR THIS DRAWING WAS OBTAINED IN PART 10/03 SSFI9B.BSM FROM: TORe OVS SKE CHES. DIMENSIONS AND BEARINGS PROPOSED LIMITS OF BURIED DEBRIS NEEDIFIED PROPOSED SHOPPING CENTER DEVELOPMENT EXCEL PROPERTY MANAGEMENT SERVICES, INC. N.E.C. GENE AUTRY TRAIL AND WON ROAD fImAE a ' the Source Group,tue i nl !_ I ' '• f �eoo ' � Re MAX A ' TFUTIF TRZ 1iuiLL ( � i YMCA E _ _7 t j — niV --•_ .S �1- uIWI 'KI ICI I tlI; It -:T= - —@— _ _ — I'I�111���I IIII YMR F ' 4l DIIIIIIIIIN lllllll llllllll DIIIIIIIIID � I/�, — —� IGTNL 5 — 11fTNL 1 14M SF. Elm p � I II I I I I I I II I I it I I I I' I I I J RAMON ROAD LEGEND ————— WAIT OF EX6 NG VNDFlLL ® PROPOSED SOIL S4.IPLE LOCATION 0 50 300 APPROXIMATE SCN£IN FEET E NOTES, w1e Olc Ywe PRwca m- p FROM: PDON FOR THIS DRAWING WAS OHTNND E PARS 10/03 SSP-19A.SLGRD 6 FROM: PREVODS SKETCHES. DIMENSIONS AND BEARINGS �- NEED i0 BE VERIFIED L(100 FOLING If SPACING PROPOSED SHOPPING CENTER DEVELOPMENT EXCEL PROPERTY MAMGEMENT SERVICES. INC. N.EC. GENE ADTRY TRAIL AND RAMON ROAD � Frune US Source Group,Ioc 4 Iv A FIT, I a 1l�l i "  :73 uAUA o m I i ae,000 sF � ) � �.-------- -- •�F il�fTll�7�aYTf?Ill�rkk-flllll�i� " Ep—JTff I ----- ----- - _ Ir 11 _ r _ w t j �I f � nIIIIIIII' _ _ PRO tr � VU I(IIIIIIIIUIIIO 46 „ t0.o00 - l 11 In E, 10.aao"ss II T T 11 t � I , RAMON ROAD LEGEND — PROPOSED LMRS OF BURIED DEBRIS 4—INCH SCH 40 PVC SLOTTED (0.02—INCH, MIN. 5 FEET FROM BUILDING WALLS) (SEE DETAIL B, FIGURE 6) 4—INCH AND 6—INCH SCH 40 BLANK M. TRUNK LINE, HEADER LINES,AND 5—FOOT LONG SEC11ONS OF PIPING BENEATH BUILDINGS(FROM BUILDING WAN) AND LANDFILL DEBRIS (SEE DETAILS B k C,FIGURE 6) VAULT CONTAINING HEADER LINE(B), VALVE(S), AND 4—INC A,SFIGURE 6)IANK ROOF LF'EL RISERS (SEE DETAILVAULT CONTAINING 6—INCH TRUNK UNE,HEADER LINES, ® VALVES,VACUUM OAUGFS, PORTS FOR PITOT TUBES,AND 0 15D 3pp SAMPLE PORTS (SEE DETAIL C, FIGURE 6) APPROXIMATE SCALE IN FEET NOTES, Ir\TE Fac MMe rmOJcm u0.: 1. INFORMATION FOR THIS DRAWING WAS OBTAINED IN PART 10103 SSPiOB.VAPSYS FROM; PREVIOUS SKETCHES. DIMENSIONS AND BEARINGS 6 NEED TO BE VERIFIED VAPOR RECOVERY PIPING LAYOUT 2. CONTRACTOR TO PROVIDE PASSIVE VAPOR COLLECTION PROPOSED SHOPPING CENTER DEVELOPMENT SYSTEM PARTS AND EQUIPMENT PER ATTACHED LIST EXCEL PROPERTY MATAGEMEW SEKVICES, INC. OF MATERIALS. N.E.C. GENE AUTRY TRAIL AND RAMON ROAD 3. PASSNE VAPOR COLLE011ON SYSTEM TO BE INSTALLED Flcu6E; PER ATTACHED DESIGN SPECIFICATIONS. The Sonme Groan,Inc. 5 BUILDING EXTERIOR WALL a'SCH 40 BUNK PVC ROOF-LEVEL RISER SECURED 4'SCH 40 BLANK PVC ROOF-LEVEL TO BUILDING EOUIPPED WITH WIND TURBINE AT ROOF 1/4'ROW MEASUREMENT PORT 4'SCH 4D BLANK PVC RISER SUPPORTED BY RISER PIPE (BELOW GRADE) (IF REQUIRED BASED ON MONITORING RESULTS) (INSTALLED 4' ABOVE GRADE UNISTRUT CHANNEL (TYPAL,ATTACHED TO RISER, 4'SCH 40 PVC ELBOW(90') i BUILDING EXTERIOR VALL SECURED TO BUILDING A 6' INTERVALS UP 24'x24'x12- (SKIRT)TRAFFIC LENGTH OF RISER (TO ROOF LEVEL) 6' 24'x24'x12'(SKIRT)TRAFFIC 4'SCH 40 BLANK PVC RISER SUPPORTED BY RATED VAULT 4'SCH 40 BUNK PVC ROOF-LEVEL RISER OFFSET RATED VAULT IN }6"xJ6' y __- SECU RUT CHANNEL (TYP.I.ATTACHED TO RISER, 2% SLOPE (TO EXISTING GRADE) SECURED TO BUILDING EOWPPED WITH WIND (CONCRETE)APRON 0 ^_d SECURED TO BUILDING AiT 6 INTERVALS UP TURBINE AT ROOF (IF REQUIRED RASED ON T �' LENGTH OF RISER (TO ROOF LEVEL) EXISTING SURFACE CONCRETE STAB MONITORING RESULTS) + SURFACE' (CONCRETE SUB) SURFACE (CONCRETE SLAB) 36'SQUARE CONCRETE ^••I 1/4'SAMPLE VALVE AND 12' 2- (THICK)SAND - x CONCRETE POURED AROUND VAVLi FORM (TYP.) HOSE BARB (1YPJ 16' 1 4^ (THICK) CLASS 2 BASE TO APPROX. 12' BELOW GRADE a' SCH 40 PVC TRUE UNION BALL 4'SCH 40 PVC TRUE UNION BALL VALVE VALVE W/VITON SEALS (ttPJ . -_ -_---.---- -- -_ W/VIRGIN SELLS (ttPJ 24' �—4'SCH 40 BUNK PVC PASSIVE VAPOR 4'SCH 40 PVC COLLECTION PIPE (TYP.) ELBOW(917) 4'SCH 40 TO VALVEBOW AND FLOWN PORT) • '�/��/\��\\\/�\ \� ��\\�l�Ci 2'PIPE BEDDING PEA GRAVEL FLOW -- 4' SCH 40 BUNK PVC PASSIVE VAPOR 2'PIPE BEDDING PEA GRAVEL (MIN.) \ \�\V �� 6' COLLECTION PIPE MP.) 24• DETAIL NOTE 36' FOR 6-INCH PIPE VAULT LOCATION, SIZE AND DIMENSIONS WILL BE INCREASED " i . NATIVE SOIL COMPACTED TO CM OF 8'TRENCH ACCORDINGLY. PALM SPRINGS SPECIFICATIONS OR APPLICABLE CODES (` ELEVATION VIEW 36 36 EAQIVE VAPOR N A 0 L5 3.0 PUN VIEW V V A APPROXIMATE SCLLE IN FEET 0 1 5 3.0 6 APPROXIMATE SCALE IN FEET 0 1 SCH 40 BLANK PVC PASSIVE VAPOR 2'(THICK) SAND 6 MIL POLYURETHANE MOISTURE 36'x36'x12'(SKIRT) TRAFFIC RATED VAULT F COLLECTION PIPE (ttPJ 6' BARRIER (ttPJ IN 36"x}6- (CONCRETE) APRON (THICK) CONCRETE (ttPJ 6 OZ GEOFABRIC (TYP.) 48' SOUARF CONCRETER SURFACE (CDUCRETE SUB)` ' ' - 3_ 4' (THICK)CUSS 2 BASE ' 10" t/4'SAMPLE VALVE AND HOSE RAPS (ttP.) NATIVE SOIL COMPACTED TO CITY 4'SCH 40 PVC TRUE UNION BLLl VALVE NATIVE SPRINGS SPECIFICATIONS OR %` 1' OVERUP W/VRON SEALS (ttPJ APPLICABLE CODES FABRIC (ttPJ �1�{L 6' SCH 40 BUNK PVC PASSIVE VAPOR FLOW FLOW rr-- TRUNK LINE COLLECTION PIPE (tt 36' PJ TO Z RISER WITH ROOF-LEVEL WIND TURBINE 3• 4'SCH 40 PVC SLOTTED (0.02-INCH) 6'x6'SCH 40 PVC CROSS 46' TO BE LOCATED AT BUILDING MAJOR F PIPE REDOING PASSIVE VAPOR COLLECTION PIPE (BLANK 614'SCH 40 PVC REDUCER PEA GRAVEL PIPING TO BE INSTALLED WHERE INDICATED ON FIGURE 5) BUSHING (ttPJ ELEVATION VIEW 6' a 4." S H 40 PVCIV VAPOR TI N B TRENCH DETAIL — TYPICAL 6 j 0 1.5 3.0 DETAIL NOTE: APPROXIMATE SCALE IN FEET TRENCHES WILL BE AT LEAST 6-INCHES o WIDER AND DEEPER THAN DR METER OF ANTE. RLE wuE: PPOdEci NO: 36' s BURIED VAPOR COLLECTION PIPES 10/03 SSP-19_TRN-DET PASSIVE VAPOR COLLECTION VAULT TRENCH PLAN VIEW SECTION PIPING AND BACKFILL DETAILS PASSIVE VkEQR CQLLErTJQtj TaUNK LINEV PROPOSED SHOPPING CENTER DEVELOPMENT EXCEL PROPERTY MANAGEMENT SERVICES, INC. 0 1.5 3,0 N.E.C. GENE AUTRY TRAIL AND RAMON ROAD APPROXIMATE SCALE IN FEET NGURE. The Source Group,Inc. 6 Method 8280A-Polycblorinated Dibenzo-a-Dioxins and Polychlorinated Dibenzofurans by GUMS This method is appropriate for the determination of tetra-, Ponta-, hexa-, hepta-, and octa-, chlorinated dibenzo-p-dioxins (PCDDs) and dibenzo-furans (PCDFs). This procedure uses a matrix-specific extraction, analyte specific cleanup, and high resolution capillary column gas chromatography/low resolution mass spectrometry (13RGC/LRMS) techniques. The sensitivity of this method is dependent upon the level of interferents within a given matrix. Proposed quantification levels for target analytes are 0.5 ppb in solid samples and 5.0 ppt in water. (Refer to Table 1) Actual values have been shown to vary by homologous series and, to a lesser degree, by individual isomer. All PCDD and PCDF analyses performed (for EPA since 1982)have used a technique for calculating the detection limit for each of the chlorination levels and each congener by using the noise level present in the elution window and the height of the chromatographic peak of the internal standard. Both the signal to noise and peak height are determined by the GUMS data system and the result of the calculation is a detection limit that is specific to the homologous series and sample. Dioxins and Furans by GUMS 8280A requires isotopically labeled analogs of target analytes to be spiked into each sample before extraction. These five isotopically labeled analogs elute and behave as target analytes do, without interfering with the analysis. Target analytes are quantitated relative to the isotope analog and therefore their calculated concentration is compensated for extraction efficiency. There is a three tiered approach to reporting and detection limits. In the absence of target analytes, a sample specific estimated detection limit(EDL) is calculated based on method signal to noise ratios. The target,analyte is then reported as "not detected" at the EDL. When target analytes are found, they are reported down to the quantitation limit (QL) without conditional modifiers such as a J flag. For values below.the QL (Table 1), qualitatively confirmed analyzes are reported as "estimated" down to the target detection limit (TDL) to denote the less certain quantltation and the value is "P' flagged. The TDL is a Version:12102 Page 1 8280A value set by the laboratory at which there is no significant chance of false positives (usually set at one-half the QL value). If there is a peak below the TDL, a detection limit based on the ion peaks is calculated and the target analyte is reported as"not detected" at the calculated detection limit. A batch specific LCS (Laboratory Control Sample)is analyzed at a frequency of 1 per batch of 20 samples as an ongoing system and standard check. The target analyte concentrations for the LCS are given in Table 3. Sample matrix spikes and/or spike duplicates are performed only at client request. The spike concentrations are nominal values based on a full volume sample preparation(1000 mis for liquids and 10 grams for solids). If less than a full volume of sample is prepared due to sample matrix, sample availability, or method requirements, the spike amount will remain constant and therefore the spike concentrations will vary. See Table 4 and Table 5 for specific QC control and corrective action measures. Version:12J02 Page 2 8280A TABLR l QUANTITATTON LIWJITS FOR STL SACRAMGNTO Method Water Soil Pat'a=ter W=Water S=Soil Analyte (ag/L) (n919) Dioxins/Furans 8280A Dioxins 2,3,7,8-TCDD 5.0 0.5 1,2,3,7,8-PeCDD 125 125 1,2,3,4,7,8-H%CDD 12.5 1.25 1,2,3,6,7,8-HxCDD 125 1.25 1,2,3,7,8,9-HxCDD 12.5 1.25 1,2,3,4,6,7,8-HpCDD 12.5 125 OCD➢ 25 2.5 Furans 2,3,7,8-TCDF 5.0 05 1,23,7,8-PeCDF 125 1.25 2,3,4,7,8-PCCDP 125 1.25 12,3,4,7,8-HxCDP 12.5 1.25 1,2,3,6,7,8-HxMF 12.5 1.25 2,3,4,6,7,8-HxCDP 12.5 i25 1,2,3,7,8,9-HxCDF 125 1.25 1,2,3,4,6,7,8-HpCDF 125 1.25 1,2,3,4,7,8,9-HpCDF 125 1.25 OCDF 25 2.5 v Version:12/02 Page 3 S2SOA TABLE 2 STL SACRAMENTO LABORATORY CONTROL LIM)TS FOR INTERNAL STANDARDS Spike Concentration Laboratory-Established Control Limitr Analytical Spiking Water SoillSediments Percent Recovery(%a) Method Compounds (ng/L) (ng/g) Water SoMedimenty 8280A "C-2,3,7,8-TCDF 25 2.5 25-150 25-150 "C-2,3,7,8-TCDD 25 2.5 25-150 25-150 C-1,2,3,6,7,8-11x= 25 2.5 25-150 25-150 13C-1,23,4,6,7,8-HpCDF 50 5.0 25-150 25-150 "C•OCDD 50 5.0 25-150 25-150 "CL-23,7,8-TCDD 12.5 115 25-150 25.150 Method defeull lnnits from SW-846 Method 8280A. Sigaal-to-nolse ratio is also evaluated for data acceptability. Version:12102 Page 4 8280A TABLE 3 STL SACRAMGNTO CONTROL LIMITS FOR LABORATORY CONTROL SAMPLES,MATRIX SPU S> AND MATRIX SPIKE DUPLICATES Spike Coneentra6on Laboratory-Pstablisbed Control Limits Relative Percent Analytical Spiking Water Soil/sedimenrs Percent Recovery(%) Difference(%) Method Compounds (ng/L) (ng/g) Water Soil/Sediments Water Soil/Sedimenrs 8290A 2,3,7,8-TCDF 25 25 67-138 67-138 20 50 1,2,3,7,8-PeCDF 62.5 625 75.145 59-146 20 50 1,2,3,67,8-HxCDF 62.5 6.25 66-136 60-143 20 50 1,2,3,4,6,7,8-HpCDF 62.5 625 61-139 61-144 20 50 OCDF 125 123 77-131 67-141 20 50 2,3,7,4--TCDD 25 2.5 64-143 67-137 20 5o 1,2,3,7,8-PeCDD 62.5 625 70-143 59-144 20 50 1,2,3,6,7.8-HxCDD 62.5 6.25 77-127 72-131 20 50 1,2,3,4,6,7,8-11pCDD 62.5 625 75-133 61-151 20 50 OCDD 125 12.5 75-131 66-148 20 50 13C-23,7,8-TCDF 25 2.5 25-150 25-150 NIA N/A 13C-2,3,7,8-TCDD 25 2.5 25-150 25-150 N/A N/A 13C-1,2,3,6,7,8-HxCDD 25 2.5 25-150 25-150 N/A N/A i3C-1,2,%4,6,7,8-HpCDF 50 5.0 25-150 25-150 N/A N/A t3C-OCOD 50 5.0 25-150 25-150 NIA N/A "CL-2,3,7,8-TCDD 125 1.25 25.150 25-150 N/A NIA Signal-tomoisc ratio is also evaluated for data acceptability. Limits are subject to change. - Version:12102 Page 5 8280A TABLE 4 STL SACRAMENTO SUMMARY OF CALIBRATION PROCEDURES Method Parameter Calibration Frequency Acceptance Criteria Corrective Action 8280A(CC1MS) DioxinaiParans check of instrument tuning As needed. Tune for maximum 1)Retune instrvmcnt using FC43 in high mass range. sensitivity ofm/z 414& 2)Repeat FC43 analysis m/a 502 Window Defining Mix(WDM). Prior to ICAL, initial COAL, and None. Used to set 1)Readjust windows. each time adjustments or retention time windows(RT). 2)Reinject WDM/CPSM. maintenance activities are performed that may affect retention times. Multipoint Calibration Initially and as required. Refer to Table A for ion abundance 1)Evaluate system. (5 point-CC]-CC5)(ICAL). ratios. Internal std SIN>10:1. 2)Recahbrate. Unlabelled PCDDs/PCDFs 3)Reanalyze ICAL. SIN>2.5:1.%RSD<157, RTs consistent with WDM. Continuing calibration Every 12 hours. Refer to Table A for ion abundance 1)Evaluate system. check standard(CCAL). ratios. Internal std SIN>10:1. 2)Reinject CCAL. Unlabe0ed PCDDs/PCDFs 3)Recalibrate as needed. SIN>2.5:1. %D<30%from the average RRF(ICAL)- 13C-1,2,3,4- TCDD and 13C-2,3,7,E-TCDD resolved with a valley of<2501o,and 1,2,3,4,7,8- HxCDD and 1,2,3,6,7,8-HxCDD resolved with a valley<50%. Instrument sensitivity check. Within 12 hours of CCAL Refer to Table A for ion abundance 1) Reanalyze samples which had (CCI) ratios. Internalstd SIN>10:1. EMPCs or results < CRQL. Any Un1abeliedPCDDs1PCDFs samples that ale nondetect or results SIN>2.5:1. are>CRQL need no action. Version:12102 Page 8280A TABLE 5 STL SACRAMENTO SUMMARY OF INTERNAL QUALITY CONTROL PROCEDURES Method Parameter QCElement Frequency Acceptalao Criteria Corrective Action 8280A Dioodna7Fumns Method blank 1/batch,not to <QL and Internal standard 1)Run system blank. (HROC/LRMS) - exceed 20 samples. criteria met. 2)Assess impact an date. 3)Reanalyze. 4)Reprep batch as necessary. System blank As required. <QL Run until system is clean Internal standards Every sample,method Refer to Table 1)Evaluate SIN,>1M and assess impact on data. blank and LCS. 2)Reanalyze extract 3)Reextract to confmn matrix effect. Matrix Spike / Matrix Spike Per client request. Refer to Table 1)Recalculate. Duplicate 2)Assess impact on data. 3)Natrateany ondiers. LCS(Include natives) Match,not to Refer to Table 1)Recalculate. exceed 20 samples. 2)Assess impact on data. 3)Narrate any outliers. 4)Reextract entire batch if necessary Recovery standard Every sample,method blank and Refer to Table 1)Reanalyze if necessary. LCS prior to instrument analysis. Version:12/02 Page 7 8280A TABLE A CRITERIA FOR ISOTOPIC RATIO MEASUREMENTS FOR PCDDS AND PCDFS BY 8280A.. Analyte Selected Sons Relative Intensity PCDPs Tetra 3041306 0.65-0.89 Pants 340/342 1.32-1.78 Hera 3741376 1.05-1.43 Hepta 4081410 0.88-120 Octa 4421444 0.76-1.02 PCDDS Tetra 320/322 0,65-0.89 Pena 3561358 1.32-1.78 I-Ton 3901392 1.05-1.43 Hepta 4241426 0.88.1.20 OMa 458/460 0.76.1.02 lotemal Standards 13C-TCDF 3161318 0,65-0.89 s3C-2,3,7,8 TCDD 332/334 0.65-0.89 1 C-1,2,3,6,7,8-HxCDD 402/404 1,05-1.43 '3C-1,2, A6.7,8-HpCDF 420/422 0.88-120 13C-OCDD 470/472 0,76-1,01 Recovery Standards 13C-1,2,3,4-TCDD 332/334 _ 0.65-0.89 i3C-1,2,3,7,8,9-HxCDD 4021404 1.05-1.43 Version: 12102 Page 8 SW8280A TABLE I General Trench Data Total Thickfit ....... V ... Trench:; Date pepth W F Rd R 0 Comments T-1 61-1719-3 15.0 10.7 C_ Partially burned T-2 5/17193 11.5 11.5 H Unburned T-3 5/17/93 17.6 17.6 H Unburned strong decomposition odor T-4 5/17193 12.9 10.5 -H Unburned T-5 5/18/93 17.5 17.0 H Unburned, strong decomposition odor T-6 5/18/93 /18f93 20.5 20,5+ H Unburned, strong decomposition odor T-7 5118/93 12.0 8,8 H Unburned T-S 5/18/93 13.0 11.0 C Burned malted glass, iron stained soils melted glass, charred wood, burned T-9 5/18/93 12.0 10.4 __C Burned T-10 5/18/93 14.0 12.2 0, H Charred wood partially burned,vegetative debris T-11 5/18/93 16.0 14.0 C Unburned wood T-12 5/18/93 14.0 12.0 0 Unburned, vegetative debris T-13 5/18/93 20.0 20.0+ H Strong citrus odors, abundant newspaper T-14 5119193 13.6 11.6 H -Minor burning T-15 5/19/93 21.0 _20,0 H Unburned, strong decomposition odor, soil blue-gray in color T-16 5119193 16.0 12.4 H Partially charred wood, abundant newspapers, cardboard T-17 5/19/93 16.0 14.0 -H -Partially burned T-18 5/19/93 19.0 16.0 H Abundant unburned paper and cardboard T-19 5/19/93 17.0 H Strong decomposition odo.c, Primarily newspaper T-20 11.3 7.0 C occasional partially burned wood and paper 9/93 11.5 9.0 C. Some charred wood *H - Household debris consisting of papers, bottles, cardboard, tires, plastic, wood. *C - Construction debris consisting of concrete rubble, bricks, blocks, rebar, broken glass,wood. Pagel TABLE 2 Summary of Select Analytical Results Earth'Sample Sample : MTotaliP. Pesticides ' ID; " Ju, Depth Ma. te na io Pb C d Diese and PCBs�' ....... C, M a MCI CI T-1, J-1 5 Fill 13 — T-1, J-2 10 Fill 1,470 1117 T-1. J-3 —14 Native 120 6.92 T-1, J-4 15 Native 3 T-2, J-1 5 Native 261 T-2, J-2 9 Native 4 T-2, J-3 11,5 Native 14 Z— T-3, J-1 5 Fill 2 T-3, J-2 9 Fill 38 T-3, J-3 14 Fill 17 T-3, J-4 21 Native 5 T-4, J-1 5 Fill 61 T-4, 1-2 10 Fill T-4, —3 12.9 Native 7 T-5, —1 5 Fill 5_7 3.82 T-5, J-2 10 Fill 64 4.23 T-5, J-3 14 Fill 55 — T-5, J-4 17 Native 5 T—5"1—5 17.5 Native 69 4,7 I ' 0 2 M K 1.03 M /I 0,2L2gg/11 002mg/l 1 .004 mO _,DC)3 mg/l 2 M 1 5 mqjkq Limits of Detection 5 1.0 MQ/l—r— lowrn k 1000 m /k e els 1000 mg/k 5.011jqI .0 lion Levels v — Lim�Levels A Method detection limit varies by analyte. See analytical report for specific method detection limit. N.D.: Not detected in this analysis, or less than the method detection limit. Page 1 TABLE 2 (Cont'd.) : . Nit ............ ffRP H 7777777 Pesticides Samplea 7s ' a ate : 6 k qK : Fillig T-6 Fill 40 2 11 11. 22 T-6 J-3 Fill T-6, J-4 2D.5 Fill 24 —-------- ——----------------- 7. J-1 Fill 11 - 5 T-7, J-2 10 Native 4 5 616 6034 0.292 5-2 ND N�D T-8, J-2 Fill 1,255 78.4 1.5 0.07E - T-8, J-3 13 Native 6 -21,8 N.D. 0.912 0 N.D. , J-, 5 Fill 372 — — 0.13 0,062 T-9, J-2 g.5 Fill 373 3.53 - —- P2 T-9 J-3 12 Native 6 Fill 16 T-10 J-i T-10, J-2 9.T Fill 14 T;0—j-3 14 Native 1 T T J_1 5 Fill 45 J-—1 j Fill 19 T-11, J-2 9 T-11 J.-3 15-6 -Native 5 N.D. =FIJI 47N.D. D, C,7 -- o.13 N, SA 48 —T-12 J Fill 73 - 506 - -- - - - — T-12, -2 9 0,6 14 6' -- T-12 3 -13—j-1 5 Fill - - 177 1,3, JI-32 F 66 3.79 r 15 5.57 T F s3 _iq D T N - — 5 mg/kq _13, J_4 Fill N.D. 03 m 1 0.002 I=_00 2=Ml .004 Mgt[ Action Levels 21M .03 M Limits of Detection1 5-0 MCIII 1.0 Mq/1 -nim-2Lka-�m�mk l000 m jk 5,0 m — Method detection limit Vullub by analyze. See analytical report for specific method Tetertloh limit. N.D.: Not detected in this analysis, or less than the method detection limit. Page 2 TABLE (Cont'd.) t- �!�Pesticides::' TC .Earth-- Ft an Sample bf Fill N.D. T—14, J—1 T-14, J-2 10 Fill 97 8.5 0.42 N.D. 0.094 U.bI 4 589 N.D. N,D. — T-14, J-3 13.6 Native 5 --:--—0,3N.D. 144 0.555 215 N.D. N.D. 5 Fill 55 — 9 N.D. T—15,J-2 9,5 Fill 66 7.19 N.D. 0.102 1,75 7 V7 — T-15, J-3 15 Fill 33 T-15, J-4 21 - Native 3 T—i6l J— —5 —Fill 64 T-16 J-2 10 32 T—16, J-3 15 Native N.D. R Fill Fill 9 Fill '5 15 21 J_ 5 Fill N.D. [T—I M7,J—I T-17 J-2 11 Fill 26 T T_J�, j 16 Native 6 17., 3 T—18, J—I T—18, J-2 10 Fill 30 T—16, J-3 14 —12-5 5.14 —16, J-4 RM2Native 4 Fill 37 T --f—j—9 Fill 64 5.95 T—19, J-2 10 1-9, j—3 14 Fll' Native 17 4 5 Fill 29 lu Native 11 T 20 J 2 0 00 71/1 .00 �� DO I m .0077� Limits of Detection 2 m k .03 M( DDO EMIII� 1 50 11 1 I-OMM I Action 16 Levels Method detection limit varies byanalyte, See analytical report for specific method detection Irma. N.D.: Not detected in this analysis,or less than the method detection limit. Page 3 TABLE 2 (Cont'd.) e I des�, Sample -;-Sarripl&�1 F�d ID;; Depth Materlal: k HIP T-21,J-1 5 Fill 6 T-21, J-2 9 Fill 222 19.5 Limits of Detection 2 mg/kci 0,002 moll 002 m �l 004 m q/l .003 Mg/l k2 k I Action Levels I loco mq/ko� 5�Oma/l ... -- 11 — .—I i0�9�cfkq J�Walkq - Method detection limit Varies by analyte. See analytical report for specific method detection limit N.D.; Not detected in this analysis, or less than the method detection limit. Page 4 TABLE Summary of Lead Analyses Sample Sabi le TC I.T4Pb;'7otalPb G Extraction T-1, J-1 5 Fill 13 — T-1, J-2 10 Fill 0.15 T-1,J—s 14 Native 120 T-1,J-4 is Native 3 T-2,J-1 5 Native 261 T-2, J-2 9 Native 4 T-2, J-3 11.5 Native 14 _1-3, J-1 5 Fill 2 T-3,J-2 9 Fill 33 T-3, J-3 14 Fill 17 — T-3, J-4 21 Native 5 T-4,J-1 5 Fill 61 3.87 T-4, J-2 10 Fill 59 57VM T-4,J-3 12.9 Native 7 — T—s,j-1 5 Fill 57 3.132 T-5, J-2 10 Fill 64 4.23 T-5, J-3 14 Fill 55 — T-5,J-4 17 Native !ve 5 — T 5 J—5 17.5 Native 69 47 Limitsj 7—Detection 2 mo/kq .03 mg/l 0.002 m k 5.0 MA LAction Level I 1 1,000 mqlkq 1 5.0 mg/l 1 5.0 Mg/l Exceeds the Regulation Level. (CCR;Title 22) N.D.: Not detected in this analysis, or less than the method detection limit. Page 1 TABLE 3 (Cont'd.) Sample ,, 'Sample Earth r s Total Pb BTLC LP Depth., Material '7*'420*: Pb Extraction, , M q 5 Fill 19 T-6,J-2 11 Fill 40 T-6,J-3 16 Fill 22 T-6,J-4 20.5 Fill 24 6 Fill 11 T-7,J-2 10 Native 4 5 Fill 616 ": 34. T-8, J-2 9.6 Fill T—B, J-3 13 Native 6 5 Fill 372 2 B T-9, J-2 9.5 Fill 373 3.53 0.13 T-9, J-3 12 Native 6 — — T-10,J-1 5 Fill is T-10,J-2 9.7 Fill 14 T-10,J-3 14 Native 12 5 Fill 45 11 J 2 9 Fill 19 T�i 1:J�-31 155 Native 5 T-12, J-1 5 Fill 47 T-12 J-2 9 Fill 73 0.13 14 Native 61 M 5 Fill 8 — T-18,J-2 10.6 Fill 66 3.79 T-13, J-3 15 Fill 63 T-13, J-4 11 20 Fill N.D.m I I Limits of Detection 2m 'k .03 o/I 0.002 mg/kq 10004 m Action Level 1,000 mqjkq 5.0 mg/I 1 5.0 mg/l Exceeds the Regulation Level. (CCR;Title 22) N.D.: Not detected in this analysis, or less than the method detection limit. Page 2 TABLE 3 (Cont'd.) Sample Sample : Earth jotal'Pb" STLG' ; TCLP,-::Pb.*.',,..i.-.::.' Material 7420 m "I m m Ell! T-14,J-1 5 Fill K.D. - T-14,J-2 10 Fill 97 .. ... 0.42 T-14,J-3 13.6 Native 5 - T-15,J--1 5 Fill 55 0.3 T-15,J-2 9.5 Fill 86 7.*19',: 0.46 T-15,J-3 15 Fill 33 T-15,J-4 21 Native 3 16,J-1 5 Fill 64 2A8 T-16,J-2 10 Fill 32 - T-16,J-31 15 Native I N.D. - i I T-17, J-1 5 Fill T-17,J-2 11 Fill 28 - T-17,J-3 16 Native B - T-18,J-1 5 Fill 37 10 Fill T-iB,J-3. Fill 125 N.D.D, V2 B 37 W 1 25 T-18,J-41 18.2 Native 4 T-19,J-1 5 Fill 11 T-19, J-2 10 Fill 84 T-19,J-3 14 Fill 51 T-19,J-4 17 Native 4 T-20,J-1 *5 i!' 29 T-20,J- :FO Native 11 Li s f--D-v ection 27k .0tql D.002 mgka Action Lev; I 1.DOO mg/kqj 5.0 mg/l 1 5.0 MCIII Exceeds the Regulation Level. (CCR;Title 22) N.D.: Not detected in this analysis, or less than the method detection limit. Page 3 TABLE 3 (Cont'd.) Sample Sample Earth Total;Pb -STLG :::T Extraction 5 Fill 6 T-21, J-2 9 Fill 222 T-21, J-3 10 Native 9 I Limits of Detection Igtal %mg 1 .""a %k Action Level 100lk 5 mql E01a Exceeds the Regulation Level. (CCR;Title 22) N.D.: Not detected in this analysis, or less than the method detection limit. Page TABLE 4 G."Pla ettrih NJ: a.m� tid.l "I"ID Deem ..: "n, 5— FRI — 32 N.D. M N.D. at SPT 10 FYI OM n 4M a 42.6 N.D. N.D. — T-1,J-3 14 NAIN, T-1,J-4 is 5 T-2,J-2 10 J-3 i!65 9 N.D. N.D. Is 04 — T--3.—ji —5— Fmi 7.7 as taws MOA N.D. a N.D. 0.9 N.D. 12 1 m T-3 J-2 2 F41 0.1" T-3,—J3 14 FR 2! Native 7.1 8 17,5 0.113 0-5 —D —5 Fo— D s 1 0 19 T-Adj-2 10 Fiff - T-4,J-3 12.2 H.W. T-T—J , 5 I'Vi - -- 10 Man 0.7 is 112 0" 5.1 a N.3 0.33 N.D. 7-1 1-2 to Fit 12 1.31 Al —7�54 0 791 SO T�Fy CQAQ 7W 1 h,q/kg A mgjkg n,wxg a t,,1k, .3 rn Ik 5 rndjl, �:djk Alm Vkg 5 2000 mdlkg It,mg/kq 5CC m lk 7NM k 24 k SA I, br, 1�ffimij�� k M mtVka 3� gikq T_a J_ F1' T_s J_� 500m,,�g 50a qVl,9 250 rhq�l 7;TLknLI.Z, 1 5 7 0 ngn ZA qA STLC&fln.d Jh TMI. 5.0 mo JW� 0 Sm 60 ragn dol.dt.al h'hia n.lytM,.11...than tho mollhad Gledbn Ild,11w TOW Load Included In T.bl.,2 and I _ Sb-Antint..y C,-chl"n'lum M.1115don.., TI-Th.10kint Co-C Idaft NJ -Nick.] v -V.n.,11". I Do Raryllh.,, Cu-C Ppa, So-a.;.Vl.m Zn-z1h. Cd-C.dralum H9-M.VUIY Ag-GIN.r Page 1 TABLE 4 IcenI'd.) E4mpM 64mp1. E4rlh , T I IThr ho ld Llmd;Conctnir Ibn< b %Dprh.• M. 1 Eb i T I A la. B '. B �..Cd "cf,..; cn `: cu �.Hp, Mo•: .NI5 _ Ap .^TI R m k m m m m k m' k m k fm m k ) m k m rko m k m Ik m k T-d,J-2 11 FYI 0.212 1.53 fa NO 0.93 SA 5 35.3 J_02 ND d NO 0.5 ND NO 135 T-5,J-3 la FYI - - - - T-a,J-4 20.5 FIII 5 FNI 0.035 0.a5 14 N.D. 0.3 4.4 5 a.c O.DY N.D. a N.D. 0.5 N.D. 12 35.8 _T-7,J-2 10 N.IN4 - _ _ 5- FNI 2.25 3.35 110 H.D. 3.23 20.3 -13 10G 0.12 N.D. 25 N.D. L5 N.D. N.D. ❑7 T-d,J-2 0.S FIII - - - i-d, -- T-p,J-2 2.5 FNI 2.45 4 5] a.l 5 Z1.7 N.D. N.D. 2 FWD. 1 N.D. 15 110 T-2 J-3 12 N41N4 - - - - - - - - - -T-10.J-1 5 Flil - - - -T-IO,J-2 0.7 FNI 0.575 0.075 1p N.D. 0.33 4A 5 2a.a N D. N.Oa 0.4O. 2a5 T-10,J-3 14 N41H41555 FNI 0.14d 2.4 Ie N.D. 0.d5 d.7 6 1a.3N.D. _- T-11,J-T-11,J-3 15.5 N4I'a4 T-12,J-1 5 FIII T-12,J-2 s FNI 0.35 OM 19 N.O. O.eS ].1 ] 31.5 N.O. N.D. 15 N.D. O.d N.D. - 437 T-12,J-3 14 Na1H4 - - - - - - - - - - - - - - T_13,J-1 5 FNI - - - 12 VD45 0.5 N.D. alMT- 331-2 10A FNI 0.275 2.3 2f N.O. 0.a S.a 5 23 N.O. N.D.T-13,J-0 15 FNI _ - - -FIIId010 ]Oa7 IOdO ]OW 7130 71c0 ]2C0 7210 7970 T46p )520 )741 )760 i040 LimN o1041Mbn .002m k .02m Sm .2m .OGm k .7m lk Im lk 2m k 02m k 4m 1m k Nem k .3m 'k Sm lTTLC Mfn4d h TYk 22 SoomNk SCOm 1pD00 m ]5m 100 m k 2500m k aoao m k 25M m k 20 m k 3500 m 'k 2000m k iWmdk 5Wmyk ]00 m STLC d4an4d klTkN 22 15m 5.Om 1V3m n D.75m LOm SaOm Anm 25m D2 ' d 1Om Sm LOm N.D.: H,del4d4d FI IhY m41y4h,or bu Ih4n Ih4 m4r7cd d NMbn INnd. Told Lud Includ4d In Ta41u 2 And 3. 5b-An@neny or-Ohmmlum Mc-klolybd4num TI�TNlilum _ B4_Barlum C -C "ft NI-Nkk41 V -Yamdlum N-134rylIWm ca-CapP4r 54-SAIWOm Zn-21nc Cd-C4dmlum Hg-M4rculy Ap-SIN-( Pegg 2 TABLE 4(C.Wd.l aemPM Z.mpJe itnt� L"Imil 1115 DDY N.D. a 0.4 N.D. I 1 1. T-K J- 10 Fill 0.5 15 5 T-14,J-3 13.5 5 Fill - T-15,J-2 9.5 FYI 0.123 0473 31 N.D. 5 1 gme 0.7 N.D. a D.11dl 0.5 N.O. 16 05.7 T-15,J-3 15 Fill 7-15,1-A v N.W. 6 PRI 0.23 0.73 m 17.4 UP N.D. 8 D.047 0.0 N.D. is AM T-15,J-2 10 Fill T-III,J-3 is NANG T-17.J-1 5 Fill N.D.- 41 2M DI07 N.D. 7 N.D. T-1 T.J-2 11 Fill 0.975 1.5 211 T-17,J-3 to N.M. -F T-15,J-2 10 Flit 55.7 N.D. _N.D. 12 N 0 i82 T-18'j- 14 Fill 04215 243T ;!1I - m_J4 15.2 Nallie 5 Fill 03N.D. 25 D.N3 047 M'D. a 17" 7-19,J-2 10 Fill --5� 24 14 Fill T-12,j-4 11 aU DMT N.D. N.D. 325 5 Fill 04025 o!" 41 0,53 14 - y 7M T-n 4-2 :0 - 4 4 T741 M 7Wl 7139 75?Q 77N 70 0 F E6 T,I I M 75.2 rtt kg I .09m EVkg 1 .2 rr� 02 rro/k, 4 m I�wk qlkg ' WIt mWkg 3.'1k' 5 =z L�b of VC�b. VLC�liri.d Ili Till.n &N MQ: I:7 mrrog nN-'V ft 20 mq'Kg 3�m,Ikg NN�gjk IN, III �-9/kQ 5��qli`p2500�5!'ll �rrwl r-rall �rry snc�milci lvi TKW n 15. 1 5.0 w I I W w, I N.D.:Not a t od ill 6 or I...thiliI M.ill tl.i.dhn(Irrik. TIW L..d holuGd l,Tabl.,2 nd 3. So-Artft.rvy Or-ChrOmIOM Mo-Molyb&nUM Tf-ThoUturri S. e.'lum Co-Coh.h M1-Nll V -Varl i3.-Beryllium Cu-Cop", S.-S.hvlum Zft-Vill; Cd-Cdmlum Ng-M.mury Ag-Shlit Page 3 TABLE 4(Cont'd.) eamPia B nTIM p 27 T-21 J-1 5 Py! A 37 Drii M�Dm 2 9 FYI 0.71 - 7.1 7 0 1065 IFID 7470 7W 752Q 7040 P�T t m 1h,d 70N 7M r,,1k, tM mWk. 3 molkq 5 mo)kq k .2 h,,Jkq 02 mYkp A�Wkq , IrdTTL 500 n, 80WM k 25M mqMg 20 mdVkg 3�nlglkg �mdkg 1W mglkg 5Wn,,jkg 7Wmgikq 24W 75 dVk9 IW- W ro durn h 25 rr�crl 0.2m oll 3� 20n,%, 1.0,W, 5 rogli T.0 rncVlll A I 2K ral ST C daftn6d 0 1 M T� M MO .911 i-D N,Dm: Not dela,a.d b 11,4 an.lpk,or la,s than Ins m-thod dalaCldo IImX. Total Lead includad h T,bl..2 and 3. So-Ant;rn.ny C,-ClhrondW. Thaillum C. ea11.ro G,-Cdban NI -NkR-1 v -V.h.dl.m ,-9ar,11krm Cu-Copr,&r S.-slivylum Zn-Zino Cd-Cadmium H,-M.r..q A, SIN-1 Page 4 SHEET 1 OF IN THE CITY OF PALM SPRINGS COUNTY OF RIVERSIDE, STATE OF CALIFORNIA z14613OU NARY/ T OPO SURVEY OF A PORTION OF THE SOUTHWEST QUARTER OF THE SOUTHWEST QUARTER OF SECTION 17, TOWNSHIP 4 SOUTH, RANGE 5 EAST, S.B.M. PREPARED FOR GEIGER, LLC BASIS OF BEAIRING IS THE CENTERLINE OF 11299 N RAMON ROAD AS SHOWN ON PARCEL MAP NO. 18787, PM 135/53-54, BEING N 89'43'47" E NUMBER D � '�'E. "R"nUi9� ee Cl 02'11'40" 3625.46 138.86 11.44 C2 O5'49'26" 3fi25.46 368.51 164.41 0200 C3 06'01'06" 3625.46 507.37 254.10 G4 02-58'05" 4924.00 255.07 127.57 C5 89'32'40" 25.00 39.07 24.80 C6 09'42'47" 246.00 41.70 20.90 C7 08'40'17" 258.00 39.05 19.56 CB 89'11,28" 25.00 38.92 24.65 C9 42'40�25" 17.00 12.66 6.64 C10 42'40'05" 51.00 37.98 19.92 C11 111000'00" 51.00 160,22 ®. C12 42740'05" 51.00 37.98 19.92 C13 42'40'05 17.00 12.66 6.64 {� C14 90-58'O5" 125.00 139.69 j 25.43 C15 89-55'10" 120,00 131.39 119.97 0' 50, too' 150, 200' SCALE 1"=50' 20000 N © Copyright 2002 Mainiero, Smith and Associates, Inc. 3/14/03 All Rights Reserved J,N, 1649 MAINIERO, SMITH AND ASSOCIATES, INC. PLANNING / CIVIL ENGINEERING / LAND SURVE37NG 777 E. TAHQUTTZ CANYON WAY, SUITE 301 PALM SPRINGS, CALIFORNIA 92262-6784 ID TELEPHONE (760) VO-9811 / FA.Y 323-7893 See LANDSCAPE REQUIREMENTS: Reeves Associates LANDSCAPE SETBACKS: Architects STREET: 20' SIDE: 10' REAR: 10' 625 — — REQUIRED LANDSCAPE — Fair oaks Ave. Suite 190 South TREE OR SHADE REQUIREMENT: Pasadena, California 91030 50% AFTER 15 YEARS (626)93-BB66 FENCES OR SCREEN WALLS REQUIRED: (626)163-W62(fax) (626)c403-9762(fu AT RESIDENTIAL _PARKING REQUIREMENTS: _ , I PARKING PROVIDED: 0' STANDARD SPACES: 2,240 SPACES sroRE MAJOR F 4 4 I = HANDICAP SPACES: 58 SPACES r 13,440 S.F. ; = TOTAL PARKING PROVIDED = 2,298 SPACES TOTAL RETAIL SITE AREA = 1,593,905 SQ. FT. TOTAL BUILDING AREA = 387,560 SQ. FT. ° I LOT COVERAGE / F.A.R.: 24.31 % PARKING/BUILDING RATIO: 1 SPACE PER 169 SQ. FT. 4iffe SITE CALCULATIONS g g TOTAL RETAIL SITE AREA = 1,593,905 SQ. FT. (36.59 ACRES) ?maize x<om-oa TOTAL BUILDING AREA = o. LG kR 369,733 SQ. FT. (8.89 ACRES) SCHEMATIC SITE PLAN \SE— I AND OVERALL SITE PLAN iC=Aso'-o° SSP-19 See �vll slzee-�-�lu� Appendix E Conceptual Landfill Gas Collection System General Design Specifications Geiger, LLC - Former Palm Springs Landfill Proposed Shopping Center Development, Palm Springs, California November 5, 2003 General Specifications • Trenching Width — Minimum of 10 inches for 4-inch vapor collection piping Minimum of 12 inches for 6-inch vapor collection piping • Trenching Depth — Minimum of 10 inches for 4-inch vapor collection piping Minimum of 12 inches for 6-inch vapor collection piping • Pipe Bedding and Trench Backfill Material — Pea Gravel • Vapor Collection Pipe Spacing Beneath Buildings — 50 feet (40 feet for Major I and H Buildings) • Vapor Collection Pipe Spacing Over the Landfill Material—200 feet • Collection Pipe Diameter-4 inches • Conveyance Pipe Diameter— 4-inch beneath buildings and a 6-inch over landfill material. • Collection Pipe Material — Slotted Schedule 40 PVC (0.02-inch Slotted Pipe) and Blank Schedule 40 PVC • Pipe Valves — True Union Ball Valves with Teflon O-Rings (McMaster Carr Stock No. 4887K24 or Equivalent) • Sampling Ports — 1-inch Brass Ball Valves (Chrome-Plated Ball, McMaster Carr Stock No. 4912K72 or Equivalent Fitted with Hose Barbs) and %-inch Swagelock® Bore Through Male Connectors and Plugs (Ventura Valve & Fitting Co. Stock Numbers B-500-1-4BT and B-500- P) • Dwyer DS-300 Flow Sensor • Valve and Sampling Port Vaults — Traffic Rated and Approximately 24"L x 24"W x 12"H (Preferably Lockable) Contained in 24" Square Concrete Form • Wind Turbines-4-inch (Envirolet"FM or Equivalent) (Optional; if required based on monitoring results) • Beige or Gray UV Resistant Coating for All Above Grade PVC Piping Passive Vapor Design Specs 11-5-03.doc The Source Group,Inc. Appendix E Conceptual Landfill Gas Collection System General Design Specifications Geiger, LLC - Former Palm Springs Landfill Proposed Shopping Center Development, Palm Springs, California November 5, 2003 General Information All trenches to be a minimum of 10-inches wide by 10-inches deep (4-inch pipe). Trenches to be installed as shown on Figure 5. All slotted PVC piping to be installed a minimum of 5 feet from the edge of all building walls to prevent potential short-circuiting. Except where indicated on Figure 5 (Pad 3 trench and easternmost Major A Building trench), all adjacent slotted piping runs in parallel to be spaced approximately 50 feet on center and connected via blank PVC piping to help ensure passive vapor flow from beneath each building should a break in one of the lines occur. Spacing for Major I and H Buildings to be 40 feet. Pad 3 and easternmost Major A Building trenches to be installed as one straight run, as shown on Figure 5. All piping to be installed upon a 2-inch thick layer of bedding material (pea gravel) within each trench, as shown on Figure 6. Entire length of each trench fo be covered to the top with another 6 inches of bedding material (pea gravel). Top of each trench to intersect with bottom layer of building foundation (4-inch Class 2 Base or equivalent). Native soil surrounding and beneath each trench to be compacted in accordance with City of Palm Springs requirements or applicable codes. All vapor collection inlet piping from the looped and straight piping runs to be tied into individual 24" x 24" x 12" (4-inch pipes) or 36" x 36" x 12" (6-inch pipes) traffic-rated well vaults contained in 36" or 48" square concrete forms, respectively. Piping runs to come into each vault approximately 12-inches below grade surface. Each vapor collection inlet pipe to be equipped with a sample port and 4-inch PVC true union ball valve with VitonTM seals (McMaster Carr Stock No. 4887K24 or equivalent). Sampling port to be installed prior to valve within each vault and consist of a %-inch brass ball valve (chrome-plated ball, McMaster Carr Stock No. 4912K72 or equivalent fitted with a hose barb). Valve within each vault to be installed near the center of the vault. Piping to enter each vault from the building and exit each vault at a 90' angle via a Schedule 40 PVC elbow. Piping to be routed back to each respective building wall for connection to the roof-level riser piping via Schedule 40 PVC elbows, as shown on Figure 4. Roof-level riser piping to consist of 4-inch Schedule 40 PVC and extend laterally from approximately 12 inches below grade to the top of each building. Each roof-level riser pipe to be secured to each respective building and be equipped with a flow port installed on each riser approximately 4 feet above grade. Flow port to consist of a ''/<-inch Swagelock® bore through male connector and plug (Ventura Valve & Fitting Co. Stock Numbers B-500-1-413T and B-500-P). At roof level, each 4-inch and 6-inch Schedule 40 PVC risers to be fitted with a 4-inch and 6- inch wind turbines (EnviroletTM' or equivalent). Turbines and/or regenerative blowers are optional based on monitoring results. Turbine to be secured to reducer per manufacturer specifications. All above grade PVC piping to be painted with beige or gray UV resistant coating. Passive Vapor Design Specs 11-5-03.doc The Source Group,[lie. Appendix E Conceptual Landfill Gas Collection System General Design Specifications Geiger, LLC - Former Palm Springs Landfill Proposed Shopping Center Development, Palm Springs, California November 5, 2003 Parts List • 4-inch slotted (0.02-inch) Schedule 40 PVC piping —4,275 feet • 4-inch blank Schedule 40 PVC piping —4,450 feet • 6-inch blank Schedule 40 PVC piping — 1,250 feet • 4-inch Schedule 40 PVC elbows — 1100 • 4-inch Schedule 40 PVC tees —25 • 4-inch Schedule 40 PVC 450 Elbows— 3 • Pea gravel—400 yd3 • Concrete— 12 yd3 • 4-inch Schedule 40 PVC true union ball valves with Viton seals (McMaster Carr Stock No. 4887K24 or equivalent) — 30 • Y/ inch brass ball valves (chrome-plated ball, McMaster Carr Stock No. 4912K72 or equivalent)fitted with hose barbs —30 (each) • Swagelocko bore through male connector and plug flow ports (Ventura Valve & Fitting Co. Stock Numbers B-500-1-4BT and B-500-P) —30 Dwyer DS-300 flow sensors (portable) — 1 • 24"L x 24"W x 12"H vaults— 19 • 36"L x 36"W x 12"H vaults— 6 Envirolet"11 or equivalent wind turbines —20 • Beige or gray UV resistant coating —5 gallons PVC glue and primer—3 gallons (each) Passive Vapor Design Specs 11-5-03.doc The Source Group,Inc. MAR-04-2004 03 :46 AM MACDONALD 661 250 0555 P. 02 MAR-04-2004 10:54 FROM CRL EPA — OTSC TO 916612940954 P.02/02 Department of Toxic Substances Control Edwin F.Lowry, Director TarryTaf1r*on 1.011 N. Orandyiew Avelius Arnetlechiwhr{}cnpnp.r, Aper p raN GIMdele;Calffornls 91201 Oov}rnor March 4, 2004 Mr. Jim Evanson, Jr., R.G., C. HM Principal Hydmgeologlst The Source Group 601 Msrin Street, Suite 112B, Thousand Oaks, California 91360 FORMER PALM SPRINGS LANDFILL, INTERSECTION OF GENE AUTRY TRAIL. AND RAMON ROAD, PALM SPRINGS, CALIFORNIA Dear Mr, Evanson: This letter Is to notify you that•the Final Removal Action Workplen (RAW)has been . approved for the Former Palm 5prings Landfill Site, The Department of Toxic Substances Control (OTSC) has determined,that the RAW satisfactorily addresses all applicable state and federal statutei and regulotlons. There worm twenty-six written comments received on the Draft RAW; A Responsiveness Summary was prepared and sent out. Enclosed please find a copy of Responsiveness Summary. Copies of the approved RAW, the Responsiveness Summary and and this letter should be sent to the Information Repository. We look forwgird to the Implementation of the RAW and appreciate your cooperation in acNleving our mutual cleanup objectives, If you have any questions please contact Mr.;Stsphen Cutts, Project Manager, at ($18) 551.2178 or me, at (818) 551.2622, Sincerely, r Sayareh Amir, Chief Southern CalNomla Cleanup operstlons Branch—Glendale Office Enclosures cc: Orett L. MacDonald Geiger, LLC 23840 Philbrook Avenue Valencia, California 01354 b„PrinNd.on ftwoled Vapor TOTAL P,02 EXHIBIT (VI DTSC Letter Exhibit"D" FORMER PALM SPRINGS LANDFILL REMEDIATION ESTIMATED PROJECT TIMELINE Intersection of Gene Autry Trail and Ramon Road Palm Springs,California Proposed Activity Project Timeline March Apnl May June July Aug Sept Oct Nov Dec Jan Feb Mar 4116 5/1- 5116- 6/1- 6116- 171i- ]/t6- 8/1- 8/16- 9/t- 9/16- IDl1- 10/t6 11/1- 11/1- 121t- 11J1 1/1- 1116 Z/t- 2/t6 3/1- 3/30 M15 - 5115 5131 6/15 6130 ]/15 ]/30 8/15 8/31 9/15 9/30 10It5 - tU15 ti/30 12/16 1/15 2l15 3/15 4/30 10130 1213 1131 W28 1 1.License Agreement Approved by the Agency 2.Mobilization,Fencing, Survey,Field Office 3.Landfill Remediation 4.Closure Testing and Documentation 5.Final Approvals (NFA Letter)