Pit Closure Procedure

DOCUMENT NO. ENV-RP-PC-01 DATE: 24 FEB 06 PT. Chevron Pacific Indonesia

Prepared Checked Approved

REV.

1 SHEET: RGS KNC DGA

OF Date Date Date

24 Feb 2006 24 Feb 2006 24 Feb 2006

PIT CLOSURE PROCEDURE

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REVISED ANALYTICAL METHOD FOR TPH, US EPA 8015 B

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DESCRIPTION

PT. Chevron Pacific Indonesia

Pit Closure Procedure

PIT CLOSURE PROCEDURE

1. Preparation a. Inform all stakeholders and confirm framing for pit closure. b. Prepare all HES procedures (including Emergency Response Plan, General Work Permit and SOP/JSA). c. Conduct tail gate meeting and install appropriate barrier tapes. d. Isolate all incoming line and discharge at the pit. e. Survey the location to determine the location of improperly closed pit referring to the drawing to establish the plan area of contaminated soil. 2. Excavation of Improperly Closed Pit a. Excavate the pit from the center of pit location and move outward until discover the Crude Oil Contaminated Soil (COCS). Stop or change the excavation direction if does not find any COCS in the pit as per reference drawing. b. The clean soil (uncontaminated) shall be stacked and segregate from COCS. c. Care shall be taken during excavation such that uncontaminated soil within the pit does not get contaminated. d. COCS shall be stacked separately from uncontaminated soil. 3. Liquid Removal a. Take the floating oil using vacuum truck and send to Gathering Station (GS) for oil recovery. b. Empty the liquid (oily water) using vacuum truck and send to GS. c. Record the total volume of water and oil that was removed from the pit. d. Use Worksheet A EP-18 PT CPI Pit Management Guidelines to record the volume of pit content. 4. Removal of Crude Oil Contaminated Soil (COCS) and Oily Debris a. Take and send samples to CPI Laboratory for sampling analysis of Total Petroleum Hydrocarbon (TPH) and Total Heavy Metals (THM) for COCS in the pit prior to remove it. i. If the test result shows below acceptable limit as per EP.18 PT CPI Pit Management Guideline, than the pit can be closed. ii. If the test result is higher than acceptable limit as per EP.18 PT CPI Pit Management Guideline but TPH is lower than 15% of oil concentration, than COCS can be excavated and send to nearest Soil Bioremediation Facility (SBF) iii. If the test result of TPH is higher than 15% of concentration, than COCS shall be mixed with the less contaminated soil to achieve 15% of concentration before sending to SBF.

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b.

c. d. e.

f. g.

Pit Closure Procedure

iv. For COCS from Heavy Oil facility, COCS shall be sent to Darling site in Duri. Remove the COCS and oily debris in the pit bottom and side with excavator. Do not use methods by using imported clay (to dump imported clay to one side of pit bottom to push the oily sludge) since it will prevent complete removal of COCS (especially at the pit bottom) and it creates more COCS to be treated. Mix the oily sludge at the pit with clay by ratio 1:1 (if more than 15% TPH) to make it more solid and safe for transportation. Excavate (remove) the pit bottom, side and ditch to canal until clean and no oil stained (until reaching native clay) for 2 feet. Send the COCS and oily debris to Soil Bioremediation Facility (SBF) using dump truck (tail gate truck) for further treatment. For COCS from Heavy Oil shall be sent to Darling site in Duri. Record the total solid (COCS) removed from the pit using Hazardous Waste Manifest form (EP.14 PT CPI Waste Management Guideline). Use Worksheet A of EP-18 Pit Management Guidelines to record the volume of solid removed from the pit.

COCS excavation

Pit after excavation of COCS

5. Pit Sampling and Analysis a. Pit Bottom Sampling Take soil samples (by qualified personnel from third party laboratory) of pit after the pit is visually clean from COCS and oily debris; refer to sampling procedures as per EP-18 PT CPI Pit Management Guidelines. i. Sampling Equipment  Augers or pipes (2.25” ID) or hole digger.  Jars (500 ml glass) TeflonPit sampling lined lids, 3 per composite sample.  Coolers, 40-50 L  Blue ice packs  Labels  Tape ii. Cleaning & Cleanliness  Clean all sampling equipment

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

Pit Closure Procedure

by washing in detergent and de-ionized water followed by rinsing with de-ionized water. Sampling equipment must be kept clean to avoid cross contamination of samples. The person taking the samples should wear latex or nitrile gloves.

iii. Labeling  Label each sample by including the OU, field location, site location, date, time and person collecting the sample.  Record in the logbook for recording samples and their location. iv. Composite Sampling  Ensure that the auger or pipe is clean before sampling  Choose the sampling locations randomly prior to arriving on site  Position the auger on the surface of the site and twist the auger  Sample to a depth appropriate for each site type  Place the sample in a clean plastic pail  Move to the next sampling location  Mix the 10 samples in the bucket thoroughly with a clean stainless steel spoon or spatula to make a composite sample  Sub-sample the composite and fill 3 pre-cleaned 500 ml jar with a Teflon liner  Ensure the sample is properly labeled and note the collection on the chain-of-custody form  Store the sample in a cooler containing Blue-ice  Before leaving the site, clean the sampling apparatus v. Sample size  3 samples – 500 ml each for hydrocarbon and metal analysis.  1 jar of sample sent to PT CPI Lab for analysis.  1 jar of sample sent to Third Party Lab (outside CPI lab) for analysis.  1 jar of sample should be retained for future analysis in case of suspected laboratory errors. vi. Example of random sampling grid (map) vii. Recording  Record the sampling information on the Worksheet C EP-18 PT CPI Pit Management Guidelines.

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Pit Closure Procedure N

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b. Background Sampling  Take 5 random samples from surrounding pit which is not contaminated.  Compose the samples into 1 composite and put it in the jars (refer to method of composite sampling above – point 4.a.iv).  2 samples – 500 ml each for hydrocarbon and metal analysis.  1 jar of sample sent to PT CPI Lab for analysis (same analysis with pit samples).  1 jar of sample sent to Third Party Lab (outside CPI lab) for analysis (same analysis with pit samples).  Record the sampling and analysis information on the Worksheet B c. Analysis The analysis of pit bottom samples and background samples consists of:   

Oil content as TPH using EPA 8015-B method Total Metals concentrations pH

The detail of analysis method and acceptable concentration can be found in attachment below (refer to Table 1 and table 2 EP-18 PT CPI Pit Management Guidelines). 6. Pit Isolation a. Isolate the inlet ditch or pipe by closing permanently the inlet. b. Dismantle the discharge or siphon to canal (if any). c. Install barricade (use yellow tape) to prevent unauthorized person entering the pit location.

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Pit Closure Procedure

7. Backfilling, Grading and Re-greening a. Backfilling can be done if the pit already clean and the sample analysis meet or bellow the acceptable concentration limit (refer to Table 2). b. The soil for backfilling must be clean and not contaminated. c. Test the backfill soil for TPH, Total Metals, and SAR if not sure about the source of backfill material. d. If the backfill soil analyses meet the acceptable concentrations, then it can be used for backfilling. e. Backfill and grade the surface so that it drains well and does not pool water. f. Re-vegetate sufficiently to control soil erosion with grass and/or trees.

Pit after backfill

Regreening

8. Recording a. Record all the data of pit closure in Worksheet A, Worksheet B, Worksheet C and Worksheet D of EP-18 PT CPI Pit Management Guidelines (attached worksheets below). b. Record all the oily waste generated from pit cleaning activity in Hazardous Waste Manifest form of EP-14 PT CPI Waste Management Guideline (attached worksheet below).

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Pit Closure Procedure

WORKSHEET A

PIT INFORMATION CPI OU:

 HO

 SLN

 SLS

 HCT

 SCM

FIELD / SITE: WELL NO. / CMTF / STATION: LOCATION (coordinates or long. / lat.): TYPE OF PIT: APPROXIMATE PIT DIMENSIONS (LxWxD, m): ESTIMATED VOLUME OF CONTENTS (m3): TOTAL

OIL

WATER

SOLIDS

DESCRIBE HOW PIT WAS OPERATED:

OTHER SITE FEATURES (proximity to residences, surface water, etc.):

SKETCH OR MAP ATTACHED:

 YES

 NO

PHOTOGRAPHS ATTACHED:

 YES

 NO

WORKSHEET PREPARED BY: SBU: PHONE: DATE:

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Pit Closure Procedure

WORKSHEET B

SAMPLING & CHARACTERIZATION OF PIT MATERIAL

SAMPLES: DATE

SAMPLE NUMBER

MEDIA SAMPLED

ANALYTICAL RESULTS ATTACHED:

 YES

REQ. ANALYSES

 NO

SAMPLE COLLECTION METHOD(S):

SAMPLES COLLECTED BY: SBU: PHONE: DATE:

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Pit Closure Procedure

WORKSHEET C

POST-EXCAVATION SAMPLING OF PIT SAMPLES: DATE

SAMPLE NUMBER

MEDIA SAMPLED

ANALYTICAL RESULTS ATTACHED:

 YES

REQ. ANALYSES

 NO

SAMPLE COLLECTION METHOD(S):

SAMPLES COLLECTED BY: SBU: PHONE: DATE:

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Pit Closure Procedure

WORKSHEET D

CLOSURE SUMMARY The following is a summary of the pit elimination activities that were conducted. PIT DESCRIPTION / LOCATION:

ACTIVITY

DATE(S)

Site photographs obtained prior to closure.

 Yes  No

Pit content samples collected for analyses.

 Yes  No

Liquid removed from pit.

 Yes  No

Solids removed from pit.

 Yes  No

Pit samples collected after remediation or excavation of contents. Pit backfilled with clean soil and graded.

 Yes  No

Surface planted to prevent erosion.

 Yes  No

Site photographs obtained after closure.

 Yes  No

 Yes  No

OTHER INFORMATION Approximately

bbl of liquid were removed from the pit and disposed of by m3 of solids

Approximately were managed onsite / offsite by The appropriate closure endpoint was determined to be

__

Pit analyses, after remediation or excavation, indicated average concentrations of

Work coordinated by

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Date completed

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Pit Closure Procedure

HAZARDOUS WASTE MANIFEST DOKUMEN LIMBAH B3

No.

Please fill in on capital (Diisi dengan huruf cetak dan jelas) THIS SECTION MUST BE COMPLETED BY THE GENERATOR/COLLECTOR (BAGIAN YANG HARUS DILENGKAPI OLEH PENGHASIL/PENGUMPUL LIMBAH B3) 1. B3 Generator/collector name and mailing address

2. Shipment location if different from mailing address (Lokasi pemuatan bila berbeda dari alamat perusahaan) :

(Nama dan alamat perusahaan penghasil/pengumpul) : Telp. :: Telp. :

Fax :

Fax :

3 Generator registration No.(Nomor penghasil):

4. Shipping Description (Data Pengiriman Limbah B3) : A. Physical state (Jenis limbah B3)

C. Hazard class

B. Technical name if applicable (Nama Tehnik, bila ada)

E. UN/NA Code

(Karakteristik limbah)

:

(Kode UN/NA) :

:

D. Hazardous waste code (Kode limbah B3)

:

F. Packing group

G. Unit of : (Satuan ukuran)

(Kelompok kemasan) :

Weight (Berat) :

Ton

Volume (Isi)

M3

:

5. Additional descriptions for material listed above

:

H. Quantity of packages

I. Peti kemas (Container)

(Jumlah total kemasan) :

No.

:

Type (Jenis)

:

:

(Keterangan tambahan untuk limbah B3 yang tersebut diatas) 6. (Special handing instruction and additional information)

: :

Instruksi penanganan khusus dan keterangan tambahan

:

7. Emergency response contact Phone No.

:

(Nomor telepon yang dapat dihubungi dalam keadaan darurat)

:

8. Shipping purpose to (Tujuan pengangkutan ke) : Collector (Pengumpul) / Processor (Pengolah) / exploiter (Pemanfaat)*

Note/Catatan:

(If the party filling this form is the collector, list the name of the generator whose waste will be transported, furnished with the appendix to copy of the docuent sent by the generator to the collector) : Jika pengisi formulir ini adalah pengumpul B3 maka sebutkan nama penghasil limbah yang limbahnya akan diangkut disertai lampiran salinan dokumen limbah yang dikirim penghasil ke pengumpul

Producer / Collector certification : I hereby declare that contents of this consignment are accurately described above the proper shipping description and have been packed and labelled and are in proper condition for transport by highway according to GOI or international regulation). Pernyataan perusahaan penghasil/pengumpul limbah B3 : Dengan ini saya menyatakan bahwa limbah B3 yang dikirimkan sesuai dengan perincian pada daftar isian baku yang tersebut diatas, serta dikemas dan diberi label dan dalam keadaan laik untuk angkutan di jalan raya sesuai dengan Peraturan Pemerintah RI atau peraturan internasional.

9.

Name (Nama) :

10.

Signature (Tanda Tangan ) :

11. Title (Jabatan) :

12. Date (Tanggal) :

THIS SECTION MUST BE COMPLETED BY THE TRANSPORTER (BAGIAN YANG HARUS DILENGKAPI OLEH PERUSAHAAN PENGANGKUT LIMBAH B3) 13. A. Transporters name and address (Nama dan alamat perusahaan pengangkut limbah B3) :

16. Bapedal registration No. (Nomor Pendaftaran Bapedal)

:

17. Vehicle identity (Identitas kendaraan) :

:

Truck No. (Nomor truk)

:

14. Telp.

Ship Name (Nama Kapal)

:

15. Fax.

Shipping Permit (Izin Pengangkutan)

18. Name (Nama) :

19. Signature (Tanda tangan) :

:

20 Title (Jabatan) :

21. Shipping date (Tanggal pengangkutan) : 22. Sign date (Tanggal tandatangan) :

BAGIAN YANG HARUS DILENGKAPI OLEH PERUSAHAAN PENGOLAH/PENGUMPUL/PEMANFAAT LIMBAH B3 (THIS SECTION MUST BE COMPLETED BY THE PROCESSOR/COLLECTOR/EXPLOITER) 23. Processor/Collector/Exploiter* name and adress (Nama dan alamat perusahaan Pengolah/Pengumpul/Pemanfaat* limbah B3) :

24. Telp. :

25. Fax.

26. Bapedal registration No. (Nomor Pendaftaran Bapedal) : Processor/Collector/ Exploiter certification: I Hereby declare that I have received the type and quantity of waste as described above by the Generator/Collector/Exploiter and that it will be processed according to GOI or international regulations Pernyataan perusahaan Pengumpul/Pengolah/Pemanfaat limbah B3 : Dengan ini saya menyatakan bahwa saya telah menerima kiriman limbah B3 dengan jenis dan jumlah seperti tersebut di atas dan bahwa limbah tersebut akan diproses sesuai dengan peraturan Pemerintah RI atau peraturan internasional 27. Name (Nama) :

28. Signature (Tanda tangan) :

29. Title (Jabatan) :

30. Date (Tanggal) :

Discrepancy notification : The following waste is not being accepted and will be returned to the generator. Pernyataan ketidaksesuaian limbah : Setelah dianalisa, limbah yang disebutkan tidak memenuhi syarat sehingga selanjutnya akan dikembalikan kepada perusahaan penghasil limbah. 31. Type of waste (Jenis limbah) : 32. Quantity (Jumlah) : 33. Bapedal Req. No. (Nomor Pendaftaran Bapedal) :

34. Reason for rejection (Alasan penolakan) : 35. Date returned (Tanggal pengembalian): 36. Processor/collector signature (Tanda tangan) :

* Cross out where not applicable (Coret yang tidak perlu)

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Salinan :X

mengirim ke :

(Copy X):

Mails to :

:

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Pit Closure Procedure

INSTRUCTION FOR FILLING OUT THE B3 WASTE MANIFEST CARA PENGISIAN DOKUMEN LIMBAH B3

1.

Generator/collector name and mailing adress (Nama dan alamat perusahaan penghasil/ pengumpul limbah B3)

(GS I, Area 1&2, Produce Team, Minas SBU; Minas Centralized Used Lube Oil Station) Nama dan alamat jelas perusahaan penghasil atau pengumpul yang mengirim limbah B3.

2.

Shipment location if different from mailing address (Lokasi pemuatan bila berbeda dari alamat perusahaan)

Not necessary to fill in (Alamat jelas lokasi pemuatan limbah B3)

3.

Generator registration No (Nomor penghasil)

Not yet available at this time, suppose to be given by Bapedal (Nomor yang diberikan Bapedal kepada penghasil/pengumpul ketika melakukan pelaporan)

4.

Shipping Description (Data Pengiriman Limbah B3) a. Physical state (Jenis limbah B3) b. Technical name if applicable (Nama Tehnik, bila ada)

Used lubricant oil; used grase oil; used hydraulic oil; used grease oil; used reda oil; mud transformer oil (Sebutkan bila terdapat nama teknik limbah yang diangkut)

c. Hazard class (Karakteristik limbah)

Explosive; volatile; reactive; poisson; infectious; corrosive; other). (For used lube oil fill in : other (Karakteristik/sifat limbah seperti: mudah meledak, mudah terbakar, bersifat reaktif,beracun, menyebabkan infeksi, bersifat korosif, dan limbah lain)

d. Hazardous waste code (Kode limbah B3)

Not necessary to fill in (Kode limbah B3 pada daftar limbah B3 yang terdapat pada lampiran 1,1,3 PP 19 Tahun1994)

e. UN/NA Code (Kode UN/NA)

Not necessary to fill in (Nomor kode limbah yang dikeluarkan oleh PBB)

f. Packing group (Kelompok kemasan)

55 gallons; Container; 9000 liters; vacuum truck (Kemasan yang digunakan misalnya drum atau kontainer)

g. Unit of (Satuan ukuran) Weight (Berat) : Volume (Isi) :

5.

6.

Solid; Liquid; Semi Solid; Semi Liquid (Keterangan jenis limbah B3 seperti bentuk Padat/Cair/Gas)

Ton M3

(Clear enough) Jumlah dan satuan ukuran per kemasan.

h. Quantity of packages (Jumlah total kemasan)

Clear enough (Jumlah total kemasan dalam satu dokumen limbah)

i. Container (Peti kemas) No. Type (Jenis) Additional descriptions for material listed above: (Keterangan tambahan untuk limbah B3 yang tersebut diatas)

Clear enough; if any (Nomor serta jenis kontainer yang digunakan)

Special handling instruction and additional information (Instruksi penanganan khusus dan

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For used lube oil fill in : Not listed in Hazardous Waste code (- Keterangan tambahan bila limbah B3 yang diangkut tersebut terdapat dalam kode limbah misalnya D221 katalis, D222 sludge, dll.) (- Tidak tercantum dalam kode limbah) (- Mangangkut lebih dari satu kode limbah) Special instruction for emergency situation if required (Instruksi penanganan khusus bila terjadi keadaan darurat yang sesuai dengan nomor pedoman penanganan kecelakaan)

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Pit Closure Procedure

keterangan tambahan) 7.

Emergency response contact Phone No. (Nomor telepon yang dapat dihubungi dalam keadaan darurat)

Not necessary to fill in (Nomor telepon yang harus dihubungi bila terjadi keadaan darurat)

8.

Shipping purpose to (Tujuan pengangkutan ke)

Minas Centralized Used Lube Oil Strategy; Steam Generator CGS-3, Duri SBU (Tujuan pengangkutan ke pengumpul atau ke pemanfaat atau ke pengolah , coret yang tidak perlu)

9.

Name (Nama)

Clear enough (Nama penandatangan dokumen limbah B3 adalah petugas yang ditunjuk oleh penghasil atau pengumpul yang mengirim limbah B3)

10. Signature (Tanda Tangan)

Clear enough (Tandatangan dari petugas yang ditunjuk oleh penghasil atau pengumpul yang mengirim limbah B3)

11. Title (Jabatan)

Clear enough (Jabatan penandatangan di perusahaan penghasil atau pengumpul yang mengirim limbah B3)

12. Date (Tanggal)

Clear enough (Tanggal pengiriman limbah B3)

For No. 13 through No. 22 consist of 3 sector A, B,and C. Letter A to be filled in by Transporter I, letter B to be filled in by Transporter II and letter C to be filled in by Transporter III Nomor 13 sampai dengan 22 terdiri dari 3 (tiga) bagian yang sama (A, B, dan C) untuk diisi oleh pengangkut jika pengangkutan limbah B3 berpindah alat angkut atau berpindah perusahaan pengangkut. dengan ketentuan sebagai berikut: Huruf A diisi oleh pengangkut pertama (I), Huruf B diisi oleh pengangkut kedua (II), Huruf C diisi oleh pengangkut ketiga (III) 13. (Transporters name and address) (Nama dan alamat perusahaan pengangkut limbah B3)

Clear enough : LMT or SBU Transportation (Nama dan alamat lengkap perusahaan pengangkut limbah B3)

14. No. Telp.

Clear enough (Nomor telepon beserta kode area perusahaan pengangkut limbah B3)

15. No. Fax.

(Clear enough) Nomor facsimile beserta kode area perusahaan pengangkut limbah B3.

16. Bapedal Registration No. (Nomor Pendaftaran Bapedal)

Not necessary to fill in (Nomor yang diberikan Bapedal saat perusahaan pengangkut meminta rekomendasi)

17. Vehicle identity (Identitas kendaraan)

Clear enough (Nomor Polisi kendaraan atau nama kapal atau nomor kereta atau nomor pesawat yang mengangkut limbah B3)

18. Name (Nama)

Clear enough (Nama jelas penanggungjawab dari perusahaan pengangkut yang menandatangani dokumen limbah B3)

19. Signature (Tandatangan)

Clear enough (Tandatangan penanggunjawab dari perusahaan pengangkut limbah B3)

20. Title (Jabatan)

Clear enough (Jabatan di perusahaan pengangkut dari penanggungjawab yang menandatangani dokumen limbah B3)

21. Shipping date (Tanggal pengangkutan)

Clear enough (Tanggal saat diangkutnya limbah B3)

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22. Sign date (Tanggal tandatangan)

Clear enough (Tanggal saat dokumen limbah B3 ditandatangani)

23. Processor/Collector/Exploiter* name and address (Nama dan alamat perusahaan pengolah/ pengumpul limbah B3)

Steam Generator, CGS 3, Duri SBU (Nama dan alamat lengkap perusahaan pengumpul atau pengolah limbah B3)

24. No. Telp.

Clear enough (Nomor telepon beserta kode area perusahaan pengumpul atau pemanfaat atau pengolah yang menerima limbah B3)

25. No. Fax.

Clear enough (Nomor facsimile beserta kode area perusahaan pengumpul atau pengolah yang menerima limbah B3)

26. Bapedal Registration No (Nomor Pendaftaran Bapedal)

Not necessary to fill in (Nomor pendaftaran yang diberikan Bapedal saat perusahaan pengumpul atau pemanfaat atau penghasil atau pengolah limbah B3 mendaftar)

27. Name (Nama)

(Clear enough)

28. Signature (Tandatangan)

(Clear enough)

29. Title (Jabatan)

(Clear enough)

30. Date (Tanggal)

(Clear enough)

31. Type of waste (Jenis limbah)

Not necessary fill in (Keterangan jenis limbah B3 seperti padat/cair/gas, organik/anorganik, dll)

32. Quantity (Jumlah)

Not necessary filll in (Jumlah total kemasan dalam satu dokumen limbah B3 yang ditolak)

33. Bapedal Reg. No. (Nomor pendaftaran Bapedal)

Not necessary fill in (Nomor yang diberikan Bapedal kepada penghasil ketika melakukan pelaporan - lihat nomor 3)

34. Reason for rejection (Alasan penolakan)

Not necessary fill in (Alasan penolakan misalnya komposisi limbah B3 atau karakteristik yang tidak sesuai dengan contoh)

35. Date returned (Tanggal pengembalian)

(Not necessary fill in)

36. Processor/collector signature (Tandatangan)

Not necessary fill in (Tandatangan penanggungjawab di perusahaan pengolah atau pengumpul atau pemanfaat limbah B3)

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Pit Closure Procedure

TABLE 1

ANALYTICAL TEST METHODS PARAMETER

METHOD USEPA 8015.B

Total Petroleum Hydrocarbons

SW-846 8021B BTEX

SW-846 8260B

SW-846 8100 PAHs

Total Metals

SW-846 8270C

SW-846 6010 / 7470

Electrical Conductivity (EC)

ASA Method 622.2

Sodium Adsorption Ratio (SAR)

SAR = Na+ / ((Ca++ + Mg++ / 2)1/2)

COMMENTS Total Petroleum Hydrocarbon analysis by method 8015B is performed to analyze gasoline range TPH (C2-C9) by purge & trap and Diesel range (C9-C28) by direct injection. Gas chromatographic method that is suitable for quantifying volatile organic compounds such as BTEX Alternative method to 8021B, based on gas chromatography. Uses mass spectrometer for quantification Gas chromatographic method that is suitable for quantifying semivolatile PAHs Alternative method to 8100, based on gas chromatography. Uses mass spectrometer for quantification Soil digestion by acid, ion chromatography method used for quantification of most metals (6010), cold vapor atomic absorption for mercury (7470) Extract of soil saturated with water

Calculated from concentrations, in milliequivalents / L, of Na+, CA++, and Mg++ in a soil extract

Notes: USEPA -- US Environmental Protection Agency SW-846 -- USEPA publication SW-846, entitled Test Methods for Evaluating Solid Waste, Physical/Chemical Methods ASA – American Society of Agronomy PetroFlag – field TPH kit manufactured by Dexsil Corporation, Hamden, Connecticut

Remediation-Environmental Project-HOOU

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PT. Chevron Pacific Indonesia

Pit Closure Procedure

TABLE 2

ACCEPTABLE PIT CLOSURE CONCENTRATIONS ACCEPTABLE CONCENTRATION, mg/kg

COMMENTS

18,000 30,000

Industrial use only Industrial use only

1,500 2,500

Residential or industrial use Residential or industrial use

Antimony

16

Residential or industrial use

Arsenic

2

Residential or industrial use

Barium

2,800

Residential or industrial use

80

Residential or industrial use

3600

Residential or industrial use

20

Residential or industrial use

Chromium (Total)

1153

Residential or industrial use

Cobalt

2,400

Residential or industrial use

Copper

1,480

Residential or industrial use

Lead

400

Residential or industrial use

Mercury

12

Residential or industrial use

Molybdenum

200

Residential or industrial use

Nickel

800

Residential or industrial use

Selenium

200

Residential or industrial use

Silver

200

Residential or industrial use

3

Residential or industrial use

24,000

Residential or industrial use

280

Residential or industrial use

12,000

Residential or industrial use

PARAMETER Total Petroleum Hydrocarbons Duri Crude, Restricted Access Non-Duri Crude, Restricted Access Duri Crude, Non-restricted Access Non-Duri Crude, Non-restricted Access

Total Metals

Beryllium Boron Cadmium

Thallium Tin Vanadium Zinc Electrical Conductivity (EC) Sodium Adsorption Ratio (SAR)

Remediation-Environmental Project-HOOU

4 mmhos/cm 12

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