17 WlPP Waste Information System Program WP 05 WA. 02, Rev. 0, Chg. 2 . Recording (automatically) any changes made to WWlS data records and providing a Change Log Report to identify changes that have been made (Change Log records will be maintained by the database and archived when the database archive copies are made)

10.0 WWlS PROGRAM REPORTS The W l S is designed to produce standardized reports for various uses. The WWIS reports are listed in WP 05 WA. 01. These reports will satisfy routine needs, but specialized reports may occasionally be required of the W l S data. Provisions are available for performing queries to provide information for nonstandard data requests. These requests will be processed by the data administrator on the basis of the nature of the request, the availability of resources to perform the request, and the approval of Waste Operations management.

10.1 Printina Standardized Reports Access to WWlS database standardized reports is controlled by the access authorizations assigned to users. The WWlS data administrator will print and provide copies of reports for WIPP personnel who do not have access authorization to the WWlS information.

The WWlS data administrator will print and issue reports to organizations outside of WIPP only with the express written direction of the CAO or the reports may be sent to the CAO representative for distribution. Such written requests for distribution will be filed by the data administrator for future reference,

10.2 Shipment Summarv ReDort The Shipment Summary Report will be generated at the request of the Waste Handling engineer after all of the shipment information has been received by the WWlS and will include the information necessary for acceptance at the WIPP. This information will include shipment number, TRUPACT I1 number, assembly number, inner containment vessel closure date, shipment certification date, shipment date, weight, surface dose rate, identification numbers of each container in the shipment, total activity level, nuclides (by TRUPACT It), and the Hazardous Waste Manifest Number (if assigned) to the shipments.

18 WlPP Waste Information System Program WP 05 WA. 02, Rev. 0, Chg. 2 10.3 Nuelide Report The Nuclide Report lists the radionuclides contained in the waste disposed at WlPP at the time that the report is generated and includes the total activity of individual radionuclides as well as the total repository activity. The report is organized by waste type (contact handledhemote handled), using selection criteria established by the user, such as nuclides by generator during a specified period, or all actinides. This report can be used to aid in EPA reporting and assist WIPP personnel in organizing data requests for input to the Decay Module. This report is to be generated by WIPP personnel as required.

10.4 Waste Emdacement ReDort The Waste Emplacement Report is generated on an emplacement period basis when containers have been emplaced or otherwise dispositioned and the data has been input to the WWIS from the barcode reader interface. The data is to be collected by container (for S WBs or Ten Drum Overpacks) or assembly number (for seven packs). This report will be generated weekly and will be added to the Operational Log and retained at WlPP for the operational life of the facility.

10.5 Headspace Gas Concentration Report The Headspace Gas Concentration Report contains the average concentration of all headspace analytes in a particular storage room. The selection criteria is for all containers in a room as defined by actual emplacement information. This report is generated on demand.

10.6 Reaulatorv Reportina: Biennial ReDortina lnwt Report The Biennial Reporting Input Report will be generated annually and is arranged by waste type for each generator contributing waste to WlPP in the previous year. This report summarizes the amount (weight and volume) of the waste received from each generator and collects all of the EPA hazardous codes to provide cross correlation in the various reporting schemes. The EPA identification of each waste generator is included along with the Item Description Code (or other local code), the waste matrix code, TRUPACT if Content Code, and the WlPP waste stream identification. This report is intended to provide input to WID personnel responsible for generating the Biennial Report.

11 .O WWlS PROGRAM RECORDS Project Record Services is responsible for the retention of records generated by the WlPP WWIS database program. Some of the records generated by this program will be retained at the facility as a part of the operational record until closure of the facility.

19 WlPP Waste Information System Program WP 05 WA. 02, Rev. 0, Chg. 2 Other records will be sent to records storage. Criteria to define record retention times are listed in the approved Records Inventory and Disposition Schedule and the implementing procedures for each document.

11.1 Backup and Archivina Reauirements The WWIS data administrator will ensure that required nightly backups of system information are performed. The W l S data administrator will use this backup information to reconfigure the system in the abnormal event of a system failure and loss of system data. Nightly backups will be sent out of the building to a backup server to provide for the event of catastrophic hardware failure.

In the event of a system failure, the W l S data administrator is responsible for evaluating the failure event and determining the write access users that should be notified of the failure since data entered on the day of the failure may have been lost.

The WWlS data administrator will create quarterly and annual archive copies of the database information and will provide the archive copies of the WWlS database to Waste Operations for inclusion in the operating record, which will be retained for the life of the facility.

12.0 SITE DERIVED WASTE Waste data for site derived waste will be input into the WWlS by the Waste Handling engineer. This activity will be performed per the requirements of the procedure entitled Site Derived Mixed Waste Handling, WP 05 WH1036.

13.0 TRAINING FOR THE WWlS PROGRAM This section outlines the type of training that each type of WWIS user must have, incfuding a qualification card for the data administrator@). The WWIS data administrator qualification card specifies the required reading, prerequisite training, knowledge requirements, and practical application requirements needed to ensure proper use of the W I S by the data administrator. The WlPP Technical Training Section administers the qualification card program and controls the WWSS Qualification Cards.

The basis of the remaining WWlS training will be on the job training. Waste Operations on the job WWlS training will include for the Waste Handling technicians' and Waste Handling engineers' hands on use of the system to gain the practical application knowledge needed to operate the system.

20 WIPP Waste Information System Program WP 05 WA. 02, Rev. 0, Chg. 2 The Configuration Manager will receive instruction on the proper use of the WWlS from the data administrator (the Subject Matter Expert). Software configuration management training required for the Configuration Manager is described in the WlPP Training Program (WP 14 TR. O1) and Engineering procedures.

The data administrator will be qualified per the criteria listed in WlPP RCRA Part B Permit Application, DOEANIPP 91 005, Revision 6, Appendix H 2; and training will be documented on a WWlS Operator Qualification Card. Waste Handling personnel will be required by their training program to be qualified to operate the WWIS. This training will be documented on the Waste Handling Qualification Cards. Other personnel will be instructed through on the job training in the use of the WWlS by the data administrator prior to granting of an access code to the W l S database.

14.0 REFERENCES CAO 94 1010, Transuranic Waste Characterization Quality Assurance Program Plan CAO 95 1108, WIPP Waste Information System Software Quality Assurance Plan DOEICAO 1996 21 84, 40 CFR 191, Compliance Certification Application for the Waste Isolation Pilot Plant DOENIPP 069, Waste Acceptance Criteria for the Waste Isolation Pilot Plant DOElWlPP 91 005, WlPP RCRA Part B Permit Application, Chapter C, Waste Analysis Plan SP WO WWIS 002, WWIS User's Manual WP 05 WA. 01 , WlPP TRU Waste Data Management Plan WP 05 WA. 03, Waste Stream Profile Form Review and Approval Program Attachment 1  WIS Access Request Form Date: Requestor: Phone:

Company: E Mail Address: Fax:

Organization or Site Requesting Access To W I S :

Address: City/ State: Zip:

Period of Access Authorization Requested: End Date: or indefinite TYPE OF USER:

 GeneratodShipper 21 WlPP Waste Information System Program WP 05 WA. 02, Rev. 0, Chg. 2  Characterization Data Official  Certification Official  Shipping Official  Regulatory Compliance Official  WlPP Operations  Remote Site Query Only (your site data only)  WlPP Query Only  RCRA Permitting Section Staff  Quality Engineers  Data Administrator  Database Administrator  Computer Protection Program Manager  System Administrator REASON FOR ACCESS:

 Generatorbhipper data input for review and approval  WlPP employee assigned WlPP duties  Regulatory Compliance oversight  Quality Assurance oversight  External analysis  Other:

Signature of Requestor:

Site TRU Steering Committee Member.

Data Administrator FOR WlPP APPROVAL USE ONLY Date Waste Operations Manager Date Assigned User ID:

Assigned Site IO: Assigned Password ID:

Assigned Database ID:

Page 2 of 1 fn Q) > Q) J

L Q) fn 3 f I (Y w S Q)

f L u I cr: h (u m u c b E >

e 9, (u WlPP Waste Information System Program WP 05 WA. 02, Rev. 0, Chg. 2 Attachment 3  WWIS Access Notification Form Date:

Phone: Site: Requestor:

Requestor Organization:

Address:

WWlS ACCESS: Approved Rejected WIPPWID Waste Operations Data Administrator:

Date: Signature Attachment: WWlS Access Request Form Page 1 of I 24 WIPP Waste Information System Program WP 05 WA. 02, Rev. 0, Chg. 2 Attachment 4  Shipping Review of Cellulose, Plastics and Rubber Page 1 of 1 25 Selection Criteria Container Number 57023 Site Id %

Wastestream %

Data Status Code % Waste Container Data Report WlPP Waste Information System Waste Isolation Pilot Plant Paae2af5 Waste Container Information Cntr Num : 57023 Site Id : Data Status Code : LA  LOS A M O S NATIONAL LABORATORY Shipment Data Approved by WlPP Waste Stream Profile : LA TA 55 43.01 Type Code : 2  SWB WAC Ex. # :

Cert Date : 03/ 08/ 1999 Cert Site : WACRev#: 5 LA  LOS ALAMOS NATIONAL LA Generator Site : IDC Code : LA  LOS ALAMOS NATIONA Matrix Code : S5400 Trucon Code : LA125A Shipping Category : 111.1 C1 Pcb Conc( Ppm) : 0 Decay Heat Uncert (Watts) : Decay Heat (Watts) : .206 .0336 Closure Date : 05/ 27/ 1998 Vent Date : 0212411994 Filter Install Date : 05/ 27/ 1998 Filter Model Number : NF013 Aspiration Id : 3 Gas Gen Rate : Gas Hyd Meth Gen Rate : Gas Gen Comp Date :

Packaging Num : 128 Shipment Num : LAO0001 Assembly Id : 1288 Overpack Cntr Num : Overpack Cntr Type :

Radionuclide Description Handling Code : CH Waste Type Code : TRU Wst Strrn Bir Id : T 004 Wst S t n Mwir Id : 0.00 TN Alpha Act (Cii : TN Alpha Act Uncert (Ci) : Tru Alpha Act Conc (CYg) : TN Alpha Act Conc Uncert (Cilg) : Pu239 Eq Act (PE Ci) : Pu239 Fiss Grn Eq (Fge) : Pu239 Fiss Gm Eq Uncert (Fge) :

Layers Of Packaging : 1 Fill Factor (%) : 44 Liner Type : Liner Punctured :

Gross Weight (Kg) : 424.9 Gross Weight Uncert (Kg) :

Alpha Surf Cont (dpm/ lOOcm2) : BG Surf Cont (dpm/ 100cmZ) : Bg Dose Rate (rnrerdhr) : Neut Dose Rate (rnrem/ hr) : Total Dose Rate (mrem/ hr) : 1.4 7 f 2 0 0 0 Cntr Disposal Date : Cntr Status Code : PRE 6.160E+ OO 2.010E+ 00 4.468E 05 1 458E 05 5.61 *I 1 04 Nuclide Information Activity( Ci) Activity Uncert( Ci) Mass( G) Mass Uncert( G)

pu 238 PU 240 PU 241 PU 242 PU 239 AM 24 1 NP 237 PLUTONIUM 238 PLUTONIUM 240 PLUTONIUM 241 PLUTONIUM 242 PLUTONIUM 239 AMERICIUM 241 NEPTUNIUM 237 6.15 .00183 .000003 .000007 .00434 .00421 .oooooo 1.005 .0076 .000001 .000002 .00113 .00284 .oooooo .356 00794 001 12 00 1 68 .069 00121 .000602 .Ea .0331 000212 000475 01 795 .00082 AM0158 Waste Container Data Report WlPP Waste Information System Waste isolation Pilot Plant Page 3 of 5 Waste Container Information Cntr Num : 57023 Site Id : Data Status Code :

Type Code : LA  LOS ALAMOS NATIONAL LABORATORY Shlpment Data Approved by WlPP 2  SWB Waste Stream Profile : LA TA 5543.01 Nuclide information Mass Radionuclide Description Activity( Ci) Activity Uncer&( Ci) Mass( G) Uncert( G)

U 234 URANIUM 234 ~~

.00047 .000133 .0744 .02095 Waste Mat1 Parm Radio Assay Method Material Parameters Information Description Weight( Kg)

RUBBER 4.39 IRON BASE METAL ALLOYS 114.15 OTHER M ETAUALLOYS .06 CELLULOSICS 1.55 PLASTICS 18.1 FRAM PAN Method Id RTRM VISUAL Assay Methods Information Description Assay Date Description PC/ GAMMA ISOTOPIC RATIO SYSTEM PASSIVE/ ACTIVE NEUTRON COUNTER Characterization Methods Information MOBILE RTR @ LANL VISUAL CHARACTERIZATION METHOD Sample Id : H 8FEB0413. D Layer No Sampled : 0 Sample information 041301. l998 04/ 30/ 1998 Charz Method Date o i 11 311 998 0312711 990 Sample Type : HGHM Date Sampled : 02/ 04/ 1998 Sample Amounts Analyte Method Concentration Date Analyzed Detection Method 1333 74 0  HYDROGEN 74 82 8  METHANE Sample Id : V 8FEB0413. D Layer No Sampled : 0 520.1 .02 Volume 02/ 04/ 1998 U 520.1 .02 Volume 02/ 04/ 1998 U %

Yo Sample Type : HGVO Date Sampled : Q2/ 04/ 1998 Waste Container Data Report WlPP Waste Information System Waste Isolation Pilot Plant Page 4 of 5 ~~ ~~~ ~

Waste Container Information Cntr Num : 57023 Site Id : Data Status Code :

Type Code : LA  LOS ALAMOS NATIONAL LABORATORY Shipment Data Approved by WlPP 2  SWB Waste Stream Profile : LA TA 5543.01 Sample Id : V 8FEB0413. D Layer No Sampled : 0 Sample Information Sample Type : HGVO Date Sampled : 02/ 04/ 1998 Sample Amounts Analyte Method 100 41 4  ETHYL BENZENE 107 06 2  1,2 DICHLOROETHANE 108 10 1  METHYL ISOBUTYL KETONE 108 67 8  1,3,5 TRIMETHYLBENZENE 108 88 3  TOLUENE 108 90 7  CHLOROBENZENE 10838311 06423  M, P XYLENE 110 82 7  CYCLOHEXANE 127 1 8 4  TETRACHLOROETHYLENE 156 59 2  CIS 1 ,ZDICHLOROETHYLENE 56 23 5  CARBON TETRACHLORIDE 60 29 7  ETHYL ETHER 67 56 1  METHANOL 67 64 1  ACETONE 67 66 3  CHLOROFORM 71 36 3  BUTANOL 71 43 2  BENZENE 71 55 6  1, l ,I TRICHLOROETHANE 75 09 2  METHYLENE CHLORIDE 75 25 2  BROMOFORM 75 34 3  1, l DICHLOROETHANE 75 35 4  1, l DICHLOROETHY LENE 76 13 1  1,1,2 TRICHLORO I ,2,2 TRIFLUOROETHANE 78 93 3  METHYL ETHYL KETONE 79 01 6  TRICHLOROETHYLENE 79 34 5  I ,I ,2, ZTETRACHLOROETHANE 9547 6  O XYLENE 95 63 6  1,2,4 TRIMETHYLBENZENE 430.1 430.1 430.1 430.1 430.1 430.1 430.1 430.1 430.1 430.1 430.1 430.1 430.1 430.1 430.1 430.1 430.1 430.1 430.1 430.1 430.1 430.1 430.1 430.1 430.1 430.1 430.1 430.1 Concentration Date Analyzed Detection Method 2.43 Ppm 2.42 Ppm 25.5 Ppm 3.71 Ppm 2.07 Ppm 2.3 Ppm 4.9 Ppm 2.39 Ppm 1.83 Ppm 2.31 Ppm 1.88 Ppm 2.66 Ppm 15.1 Ppm 20.5 Ppm 1.76 Ppm 21.8 Ppm 1.52 Ppm 2.01 Ppm 1.71 Ppm 2.65 Ppm 2.23 Ppm .92 Ppm 1.91 Ppm 18.9 Ppm 1.72 Ppm 2.49 Ppm 2.54 Ppm 3.47 Ppm Comment Information Comment Type Comments . 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 04/ 1998 02/ 0411 998 ozo4/ 199a 02/ 0411 998 U U U U U U U U u U U U U U U U U U U U U U U U U U U U Waste Container Data Report WlPP Waste Information System Waste Isolation Pilot Plant Page 5 of 5 Waste Container Information Cntr Num : 57023 Site Id : Data Status Code :

Type Code : LA  LOS ALAMOS NATIONAL LABORATORY Shipment Data Approved by WlPP 2  SWB Waste Stream Profile : LA TA 5543.01 Comment Information Comment Type Comments ~ ~ ~   ~

WASTE CONTAINER ORIGINAL DRUM REPACKAGED INTO MULTIPLE DRUMS, THEN INDIVIDUAL DAUGHTER DRUMS REPACKAGED INTO SWB WITH DRUM LID REMOVED & 3 EMPTY DRUMS FILTER DATE AND CLOSURE DATE ARE FOR SWB CONTAINER, VENT DATE IS FOR WASTE VENTING WHICH IS THE DATE ORIGINAL DRUM WAS VENTED, RTRM ON ORIGINAL DRUM BEFORE REPACKAGING DAUGHTER DRUM WAS USED FOR RADIOASSAY ORIGINAL VENTED & FILTERED DRUM WAS REPACKAGED AFTER HGAS RADIONUCLIDES 49CFR173.433F ISOTOPE LIST FOR SHIPPING PAPERS & LABELING: PU 238 GENERAL COMMENTS ASSAY METHODS CHAR2 METHODS Selection Criteria Site id :

Nuclide :

Panel Number :

Room Number :

Handling Code : Show Uncertainty :

TRU Nuclides Only :

EPA Tracked Nuclides Only: %

%

%

%

% YES 96 Y WlPP Waste Information System Nuclide Report Waste Isolation Mot Plant Page 2 of 2 Panel Number: 1 Room Number: 1 Activity Activity Mass Radionuclide (Ci) Uncert (Ci) Mass( G) Uncert( G)

PU 239  PLUTONIUM 239 61 3 63.05 68 63.5 Totals: 613 63.05 68 63.5 Panel Number: 1 Room Number: 2 Activity Activity Mass Radionuclide . (Ci) Uncert (Ci) Mass( G) Uncert( G)

AM 241  AMERICIUM 241 .017937191 7 .0012559 .005171 PU 238  PLUTONIUM 238 .047886207 7 .003351 002767 PU 239  PLUTONIUM 239 4.02001 3791 10 3.07141 19.22 PU 240  PLUTONIUM 240 .233645937 7 .01636 1.0151 PU 242  PLUTONIUM 242 Panel Number: 1 .00002954 7 .000002068 007454 Totals: 4.319512666 38 3.092378968 20.250492 Room Number: 8 Activity Activity Mass Radionuclide (Ci) Uncert (Ci) Mass( G) Uncet t( G)

PU 239  PLUTONIUM 239 14 6.1 134 6.1 Totals: 14 6.1 134 6.1 Panel Number: 1 Room Number: 7 Activity Activity Mass Radionuclide (Ci) Uncert (Ci) Mass( G) Uncert( G)

U 238  URANIUM 238 .00000068 2 0 2 Panel Number: 1 Totals: .00000068 2 0 2 Room Number: 7 Activity Activity Mass Mass( G) Uncert( G) Radionuclide (Ci) Uncert (Ci)

AM 241  AMERICIUM 241 1.487297834 35.33348 .402953 .124164 46.487302 032572 PU 238 * PLUTONIUM 238 80.452481581 35.181366 PU 239  PLUTONIUM 239 PU 240  PLUTONIUM 240 128.099689442 38.7763 1805.07754 191 .I21 5.380749684 35.86457 15.3752 1 1.2917 PU 242  PLUTONIUM 242 .0004a9627 35.000065651 .064286713 .075494 ~~

Totals: 215.420708168 180.155781651 1867.40728171 202.64493 Grand Totals: 846.740221 514 289.305781651 2072.49966068 294.495422 Working Copy Delaware Basin Drilling Surveillance Plan WP 02 PC. 02. Rev. 0 CCA. 40 CFR Part 191, Compliance Certification Application for the Waste Isolation Pilot Plant. DOEKAO 1996 2184. October 1996, United States Department of Energy, Waste isolation Pilot Plant, Carlsbad Area Office, Carlsbad, New Mexico.

6 Working Copy . Delaware Basin Drilling Surveillance Plan WP 02 PC. 02, Rev. 0 FIGURE 1 SURVEILLANCE AREAS WITHIN THE DELAWARE BASIN I I I P W ME XICO D R W H OLEDATABASE Wednesday, March 24, I999 AMERICAN PETROLEUM INSTITUTE ~

TOWNSHIP 21s 1 ~ RANGE 27E .... SECTION 35

LOCATION 198OFS 198OFW ,

___ I_ .  .

COUNTY EDDY NUMBER 30015220860000 __. .

MAPSYMBOL OG ___ I 552650 LOCATION POINTS ARE FOR REFERENCE ONLY  NO   __ STATE X PUNE ACTUAL SURVEY MADE.  _ STATE Y PLANE 521 671, I ______

NINE TOWNSHIP 0 UNIT LOCATION WELLNAME WELW OPERATOR WELL STATUS B TWN LEASE FIELD NAME DRILLER NELL TYPE 'LUGGED DATE >OMPDATE TD FORMATION M P INFORMATIOY __ I_

___ . i __. ... ....

OIL & GAS WELL .... .... ~______ ....

II CARLSBAD E ~

ELEVATION 31 27KB ZND CASING STRING &DEVELOPMENT . I ___ 133/ 8@ 428 038@ 2W __ ..........

. .... ... ..

. .

3RD CASING STRING 4TH CASING STRING I.  SPUD DATE 03/ 31 I1 977  __ _>

__ ow02l1977' _____ ___ __ I 359MSSP . ._ ..... ....

5 112 Q m 9 5 __.__

STH CASING STRING _

m U N E O U S W F U F ORMATIOM NCIDENCE REPORTI TWN 0 KNOWN POTASH AIR DRILLED 0 WAS BRINE ENCOUNTERED [7 FIELD V l s c c LEASE AREA 1st WORKOVER Ind WORKOVER 'rd WORKOVER .th WORKOVER th WORKOVER IOTES . I_.. ..... ...... .. ........ ____ ..... ............................ .......................... . .  .~

.  ... .... ................ .......... . .... ...........  ..... ..... ...... ..... ..... _. I___..~__ I._ _I.__~. .............

__ ....  ...

......... . .. WASTE ISOLATION PILOT PLANT DELAWARE BASIN DRILLING SURVEILLANCE PROGRAM ANNUAL REPORT 997 throuph SEPTEMBER I 998 DBANNUALREPORT Table of Contents 1.0 Delaware Basin Drilling Surveillance Program 2.0 Background Appendix DEL Data DEL. 5.1.3 Drilling Fluids DEL. 7 DEL. 7.1 Regulatory Context DEL. 7.2 Shallow Drilling Events DEL. 7.2.1 Water Wells DEL. 7.2.2 Potash Coreholes DEL. 7.2.3 Sulhr Coreholes Inadvertent and Intermittent Intrusion by Drilling DEL. 7.3 Deep Drilling Events DEL. 7.4 DEL. 7.5 DEL. 7.6 Borehole Permeability Assessment Rate of Drilling in the Basin Pressurized Brine Encounters Within the Delaware Basin 3.0 Schedule Delaware Basin Drilling Surveillance Program 4.0 1998 Updates Delaware Basin Drilling Surveillance Program 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 Drilling Fluids Shallow Drilling Events Deep Drilling Events Rate of Drilling in the Basin New Mexico Well Count and Intrusion Rate Pressurized Brine Encounters Within the Delaware Basin Borehole Permeability Assessment Borehole Depths and Diameters New Drilling Technology 5.0 Summary 1998 Delaware Basin Drilling Surveillance Program 1 3 3 4 4 4 4 5 5 5 5 9 13 14 14 14 14 14 15 16 . 17 17 17 17 17 6.0 Quality Assurance 18 7.0 References 19 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Table DEL 3 Table DEL 4 Table DEL 5 Table DEL 6 Table DEL 7 List of Figures WIPP Site, Delaware Basin, and Surrounding Area 20 Minimum Oiiand Gas Well Plugging Requirements in the Delaware Basin 21 Standard Oil and Gas Well Plugging Practices in the Potash Resource Area of the Delaware Basin Typical Well Structure and General Stratigraphy Near the WIPP Site Stratigraphy for W P Site and Surrounding Area Delaware Basin Drilling Surveillance Program Schedule  FY 98 and FY 99 List of Tables Boreholes Within the Delaware Basin Number of Shallow and Deep Boreholes Within the Delaware Basin, by Resource or Type Number of Shallow Boreholes Per Square Kilometer in the Delaware Basin, by Resource or Type Number of Deep Boreholes Per Square Kilometer in the Delaware Basin, by Resource or Type Number of Boreholes Per Square Kilometer to be Used in Performance 22 23 24 25 6 7 8 8 Assessment Calculations 9 1.0 DELA WARE BASIN DRILLING SURVEELANCE PROGRAM The Delaware Basin Drilling Surveillance Program (DBDSP) is designed to monitor resource extraction activities in the vicinity of the Waste Isolation Pilot Plant (WIPP). This program is based on Environmental Protection Agency (EPA) requirements. The EPA environmental standards for the management and disposal of Transuranic (TRU) radioactive waste are codified in 40 CFR Part 191 (EPA 1993). Subparts B and C of the standard address the disposal of radioactive waste: The standard requires the Department of Energy (DOE) to demonstrate the expected performance of the disposal system using a probabilistic risk assessment or performance assessment (PA). This PA must show that the expected repository performance will not release radioactive material above limits set by the EPAs standard. This assessment must include the consideration of inadvertent drilling into the repository at some hture time.

The EPA provided criteria in 40 CFR 0 194.33 that addressed the consideration of future deep and shallow drilling in PA. These criteria lead to the formulation of conceptual models that incorporate the effects of these activities. These conceptual models use parameter values drawn fiom the databases in Appendix DEL of the Compliance Certification Application (CCA). Appendix DEL databases contain resource extraction information gathered as a precursor to the DBDSP. Examples of information of interest include the drilling rate of deep and shallow boreholes and data relating to these holes such as diameter.

In accordance with these criteria the DOE used the historical rate of drilling for resources in the Delaware Basin to caiculate a fbture drilling rate. In particular, in calculating the frequency of future deep drilling, 40 CFR 9 194.33( b)( 3)( 1) (EPA 1996) provided the following guidance to the DOE:

idenafy deep drilling that has occurred for each resource in the Delaware Basin over the past 100 years prior to the time at which a compliance application is prepared.

The DOE used the historical record of deep drilling for resources below 2,150 feet (656 meters) that has occurred over the past 100 years in the Delaware Basin. 2,150 feet was chosen because this is the depth to the repository and the repository is not directly breached by boreholes less than this depth. In the past 100 years, deep drilling occurred for oil, gas, potash, and s u l k exploration. These drilling events were used in calculating the rate of deep drilling within the controlled area (the sixteen section Land Withdrawal Boundary of W P ) and throughout the basin in the future, as discussed in Appendix DEL of the CCA. Historical drilling for purposes other than resource exploration and recovery (such as W P site investigation) were excluded from the calculation in accordance with guidance provided in 40 CFR 194.33.

In calculating the fiequency of hture shallow drilling, 40 CFR 4 194.33( b)( 4)( 1) states that the DOE should:

idenufy shallow dnlling that has occurred for each resource in the Delaware Basin over the past IO0 years prior to the time at which a compliance application is prepared.

1 Additional criterion for calculation of fbture shallow drilling rates is provided in 40 CFR 6 194.3 3 (b)( 4)( iii):

in considering the hstorical rate of all shallow drilling, the Department may. if justified. consider only the hstorical rate of shallow dnliing for resources of similar type and quality to those in the controlled area.

The only resources present at shallow depths (less than 2,150 feet [655 meters] below the surface) within the controlled area are water and potash. Thus, consistent with 40 CFR 0 194.33( b)( 4), the DOE used the historical record of shallow drilling associated with water and potash extraction in the Delaware Basin to calculate the rate of shallow drilling within the controlled area.

The EPA provides fkrther criteria concerning the analysis of the consequences of fUture drilling events in performance assessments in 40 CFR tj 194.33( c)( EPA 1996). Consistent with these criteria, the following parameters regarding drilling were considered in the performance assessment as documented in Appendix DEL of the CCA:

types of drilling fluids * amounts of drilling fluids borehole depths borehole diameters borehole plugs fraction of such boreholes that are sealed by humans 0 natural processes that will degrade plugs * instances of encountering pressurized brine in the Castile The DOE will continue to provide surveillance of the drilling activity in the Delaware Basin in accordance with the criteria established in 40 CFR 194 during the operational phase and win continue until the DOE and the EPA agree that no hrther benefit can be gained from continued surveillance. The results of this surveillance activity will be used in performance assessment calculations performed in support of recertification.

The purpose of the Delaware Basin Drilling Surveillance Plan is to provide for active surveillance of drilling activities within the Delaware Basin (Figure l), with specific emphasis on the nine township area that includes the Waste Isolation Pilot Plant (WIPP) Site (Figure 1). The surveillance of drilling activities will build on the data presented in Appendix DEL and comply with the activities presented in Appendix DMP of the CCA, which were used to develop modeling assumptions for PA. The collection of additional information on drilling patterns and practices in 2 the Delaware Basin will be used to define whether the drilling scenarios in the application continue to be valid at each recertification or documentation of continued compliance for the WIPP.

Surveillance of drilling activities within the Delaware Basin will be implemented no later than at the beginning of the operational phase. This activity will continue after closure for 100 years or until the DOE can demonstrate to the EPA that there are no significant concerns to be addressed by further surveillance (Section 7.1.4, DOE 1996b). Beginning no later than the initiation of the operational phase and continuing through post closure, drilling activities within the Delaware Basin will be tracked using commercially available databases. Drilling activities as related to hydrocarbon resources, potash boreholes, and water wells that occur within the nine township area, in which the W P Site is centered, will be more rigorously monitored using the commercial databases, visual surveillances, and the drilling records maintained by both state and federal organizations.

2.0 BACKGROUND APPENDIX DEL 1996 DATA The information and tables presented in this section are from Appendix DEL of the Compliance Certification Application (DOE 1996a) submitted to the EPA in October 1996. This information was used in the PA that supported the first WIPP certification to the EPA disposal standard. The basis of the DBDSP is to provide annual accounting on the specific items mentioned in this section. The well counts listed in Tables DEL 4, DEL 5, and DEL 6 were used to calculate the intrusion rate for PA. Table DEL 7 shows the results of those calculations. Section 4.0 of this report will address the specific. items from this section with updated counts fiom 1996 and new calculations as necessary.

DEL. S. 1.3 Drilling fluids are an integral part of every drilling program. Rotary drilling rigs and drill bits would not be able to hnction without drilling fluids, or mud as it is most commonly referred to in the oil and gas industry. The drilling fluids are circulated continuously through the drill pipe, down hoie to the bit nozzles, and back up the annulus to the mud tanks or pits on the surface. The drilling fluids pumped through the bit nozzles cause the bit cutters to turn which, a'  4g with the turning of the drill stem, cuts the hole. As the fluid moves out through the drill bit, a i carries the cuttings made by the bit to the surface.

Drilling fluids serve several other functions as well. They lubricate and cool the bit, assist in bringing heavier cuttings to the surface, aid in controlling pressures that may exist in formations that are penetrated by the bit, and serve as a source of downhole information.

There are a variety of drilling fluids used in Delaware Basin drilling. Most rotary drilling operations use saturated brine (10 to 10.5 pounds per gallon) as a drilling fluid until reaching the Bell Canyon Formation, where intermediate casing is set. The brine has most often been 3 manufactured by injecting fresh water into the Salado Formation and then pumping the water back to the surface. This process enables drillers to have a constant source of quality brine water. Saturated brine is used heavily in drilling because the intermediate string passes through the Salado Formation, which is salt. Fresh water will cause washout of the salt. Once drilling is continued in harder rock formations, such as the Bell Canyon Formation, materials such as bentonite, barite, or attapulgite are often added to the drilling fluid. All of these materials will increase viscosity and add weight to the drilling fluid column.

In recent years, the increased capacities of circulating systems and improvements in pumping technology have resulted in greater precision in controlling mud flow. Present day drilling fluids have been formulated using complex chemistry to combat specific downhole problems. These additions to fluid technology allow the driller to vary chemical and physical properties of the drilling fluid many times if necessary while drilling an oil or gas well.

DEL. 7 Inadvertent and Intermittent Intrusion by Drilling Information pertinent to the assessment of the likelihood of inadvertent intrusion into the repository is presented in this section.

DEL. 7.1 Regulatory Context The EPA criteria for certification of WIPP's compliance with the 40 CFR Part 191 disposal regulations state that performance assessments examine deep and shallow drilling that may potentially affect the disposal system during the 10,000 year regulatory time frame (40 CFR tj 194.33[ a] and tj 194.54[ b][ l]). Deep drilling is defined by the criteria as drilling events that reach or exceed 2,150 feet (655 meters) below the surface while shallow drilling means drilling events that do not reach a depth of 2,150 feet (655 meters) (6 194.2). The total rate of deep drilling must be calculated as the sum of the rates of deep drilling for each resource in the Delaware Basin over the past 100 years. The total rate of shallow drilling must be calculated as the sum of the rates of shallow drilling over the same time period for each resource in the Delaware Basin that is of similar type and quality as the resources in the W P controlled area.

DEL. 7.2 Shallow Drilling Events The majority of shallow holes are composed of water wells, potash cbreholes, and sulkr coreholes. The identification, location, and depth of the shallow boreholes in the Delaware Basin have been taken from existing commercial databases and maps. The data gathered on shallow boreholes was taken directly from commercial databases and BLM records as described below.

DEL. 7.2.1 w r W e h Information on water wells in the Delaware Basin was obtained from a commercial database developed by Whitestar Corporation of Englewood, Colorado.

4 DEL. 7.2.2 Potashew Information on potash coreholes in the Delaware Basin was compiled from BLM records.

DEL. 7.2.3 Mfu r Coreho la Sulfbr corehole information was obtained from a commercial database developed by Whitestar Corporation of Englewood, Colorado, and the Petroleum Information Corporation of Denver, Colorado.

DEL. 7.3 Deep Drilling Events Only the drilling of a deep well could result in inadvertent human intrusion into the WIPP repository. The only known wells that can be classified as deep are oil and gas wells. Information on the identification, location, and depth of the deep boreholes in the Delaware Basin has been derived from existing commercial databases and maps. The data gathered on the deep oil and gas boreholes are available from several commercial sources. To assure the accuracy of these commercial databases and maps, and obtain the best possible count of deep wells in the basin, these commercial sources were verified against one another.

The data sources selected for determining the number of oil and gas wells in the DeIaware Basin were maps obtained fiom the Midland Map Company (MMC) and a database obtained fiom the Petroleum Information Corporation (PI). Both the MMC and PI obtained well records from the NMOCD and the Railroad Commission of Texas OGD. These companies have a reputation for data reliability; the information they provide is regarded as a standard within the industry. However, these companies do not provide any warranty on the accuracy or the completeness of the data.

It is not considered economically feasible to validate these data. The process of validating the data would require field verification of wells in an area covering approximately 8,910 square miles (23,077 square kilometers) as well as a comparison of NMOCD and BLM records with the private records of the various oil and gas companies.

While it was not considered feasible to vaiidate the original data, it was considered reasonable to determine a verifiable deep well count. By comparing the two selected commercial sources of data, a count of deep wells in the Delaware Basin has been prepared. In comparing the PI database to the MMC maps, some wells were found to be identified either in the database or on the maps, but not in both sources. The well count presented here was derived using aIl wells in the PI database plus the wells identified on the MMC maps that were not in the PI database.

DEL. 7.4 Rate of Drilling in the Basin The number of boreholes listed in the PI database and the number of boreholes shown on the 5 MMC map but not listed in the PI database are provided in Table DEL 3. In addition, the number of shallow and deep boreholes created in the Delaware Basin over the past 100 years is shown by type of borehole in Table DEL 4.

En the case of water wells, the available data do not include the depths of all of the water wells shown in the database. To amve at an estimate of the total number of deep and shallow water weils, the ratio of known deep wells (that is, those 2,150 feet [656 meters] or greater) versus known shallow water wells was calculated and applied to the total number ofwater wells shown in the database.

Table DEL 3. Boreholes Within the Delaware Basin, 1996 Boreholes Shown on the Midland Map But Boreholes Listed Not Listed in the PI Total Number of Borehole Type in the PI Database Database Boreholes by Type Oil Well Gas Well OiUGas Well Abandoned Wells Dry Hole Jnjection Well Service Well Total Hydrocarbon Boreholes Sulphur Corehole Potash Corehole Stratigraphic and Core Test Hole '

Water Well Brine Well (Solution Mining)

Total Other Boreholes Hydrocarbon Boreholes 5,728 37 1,569 2 11 0 167 1 3,453 56 72 2 147 0 .I50 98 Other Resource, Exploratory, or Test Boreholes 5 84 0 925 0 1,271 ' 0 2,311 1 0 0 5,092 0 5,765 1,571 14 168 3,509 74 147 11,248 584 925 1,271 '

2,3 11 1 5,092 Excluding boreholes dnlled as part of WIPP site characterization programs 6 The intrusion rate for boreholes drilled per square kilometer (0.39 square mile) over 10,000 years has been calculated using the borehole counts listed in Tables DEL 4, DEL 5, and DELQ. The calculated rates suggested for use in the performance assessment are shown in Table DEL 7. As provided by 40 CFR 3 194.33( b)( 4)( iii), the calculated rate for shallow boreholes excludes sulphur holes because no economically extractable sulphur is located within the WIPP land withdrawal area (NMBMMR 1995). In addition, consistent with EPA guidance in the ReJponse to Comments Document For 40 CFR Pur? 194 (EPA 1996c) (see page 12 8, last paragraph), both shallow and. deep holes created as part of WIPP site characterization efforts have been excluded from the count. Based on the data provided in these tables, the calculated rates are 21.821 shallow holes per square kilometer (0.39 square mile) and 46.765 deep holes per square kilometer (0.39 square mile) over 10,000 years.

Table DEL4. Number of Shallow and Deep Boreholes Within the Delaware Basin, by Resource or Type, 1996 1 Borehole Type Shallow Borehole Deep Borehole '

Hydrocarbon Borehole 608 Sulphur Corehole 195 Potash Corehole 906 Stratigraphic and Core Test Hole 1,215 Water Well 2,3 11 Brine Well (Solution Mining) 1 Total Boreholes, by Depth 5,536 10,640 89 19 56 0 0 10,804 ' Equal to or less than 2,150 feet (655 m). Greater than 2,150 feet (655 m). Excluding boreholes drilled as part of WIPP site characterization programs.

7 Table D E E 5 Number of Shallow Boreholes Per Square Kilometer in the Delaware Basin, by Resource or Type ', 1996 Borehole Type Deep Boreholes * Boreholes Per Square F( m Hydrocarbon Borehole 10,640 46.056 Sulphur Corehole 89 0.385 Potash Corehole 19 0.082 Stratigraphic and Core Test Holes3 56 0.212 Brine Well (Solution Mining) 0 0 Water Well 0 0 Total Deep Boreholes 10,804 16.765 i ~ ~

Borehole Type Shallow Boreholes * Boreholes Per Square Km Hydrocarbon Borehole 608 2.632 Sulphur Corehole 495 2.113 Potash Corehole 906 3.922 Stratigraphic & Core Test Holes 1,215 '

I Water Wells 2,311 5.259 10.003 Brine Well (Solution Mining) 1 0.004 Total Shallow Boreholes 5,536 23.963 *

* The area of the Delaware Basin is 23,102.1 square kilometers (14.356 square miles). The number of holes per square kilometer is calculated as follows: (number of holes) x 10.000 years / area / 100 years. Equal to or less than 2.150 feet (655 m). Excluding boreholes dnlled as part of WIPP site characterization programs.

Table DEL6. Number of Deep Boreholes Per Square Kilometer in the Delaware Basin, by Resource or Type *, 1996 8 Table DEL 7. Number of Boreholes Per Square Kilometer to be Used in Performance Assessment Calculations, 1996 Type of Borehole Number of Boreholes Boreholes Per Square Km Shallow Borehole 5.041 ' 21.821 Deep Borehole 10,801 46.765 ' Excluding sulphur coreholes and boreholes drilled as part of W P site characterization programs. ' Excluding boreholes dnlled as part of WIPP site characterization programs.

DEL. 7.5 Pressurized Brine Encounters Within the Delaware Basin Some of the human intrusion scenarios evaluated in the WIPP performance assessment include the assumption that a borehole results in the establishment of a flow path between the repository and a pressurized brine pocket that could be located beneath the repository in the Castile. To iden* reasonable assumptions for use in the CCA performance assessment, commercial drillers and operators with experience in the Delaware Basin were surveyed to determine the frequency of occurrence and typical depths of abnormally pressurized brine zones within the Delaware Basin (Personal Communication 1996d; Personal Communication 1996e; Personal Communicatbn 1996c Personal Communication 19968).

For the purpose of this investigation, abnormalIy pressurized brine zones are defined as those that exhibit pressures exceeding the hydrostatic pressure of the column of drilling fluid in the hole. Consistent with this definition, any brine encounter having pressure exceeding hydrostatic pressure is considered abnormally pressurized. Flow to the surface driven by differential pressures just above hydrostatic pressure, however, would typically not be noticed by a driller, and is expected to be of little impact to performance assessment.

When asked how often abnormally pressurized brine zones are encountered, each of the drillers surveyed stated that it was an uncommon occurrence in the Delaware Basin, and that they believe the actual frequency to be less than five percent. This estimate captures those occurrences where the differential pressure could be great enough to drive a noticeable quantity of drilling fluid to the surface. The drillers reported that these zones are most frequently encountered in the Castile Formation in the Delaware Basin.

The Castile Formation within the Land Withdrawal Area (LWA) is approximately 1,250 feet (381 meters) thick. It is primarily an anhydrite formation and has been found to have isolated areas that hold quantities of brine. Based on observed Castile porosity (amount of space in the formation to store brine) and permeability (ability of the formation to conduct fluids), brine present in the unit may be released into an intersecting uncased wellbore. This brine may be normally or abnormally pressured.

9 Hydrostatic pressure at any depth in the wellbore is calculated using the formula:

Prn = MW x D x 0.052 where Pm= pressure (pounds per square inch), MW= mud weight (pounds per gallon), D= depth (feet), and and 0.052 is a conversion factor representing mud density.

For example, at 3,000 feet (915 meters), the hydrostatic pressure is calculated at 1,560 pounds per square inch (1.08 x lo7 Pa) based upon the use of a 10 pounds per gallon saturated brine as the drilling fluid. In this example, brine flow to the surface would be possible only if the brine source is pressurized greater than 1,560 pounds per square inch.

Typically, the driller would become aware of abnormally pressurized brine zones only if the pressure of the brine encounter is sufficient to cause a noticeable gain of fluid in the mud pit. When this occurs and the flow is not great enough to cause immediate concern, drilling will typically continue, but the driller will calculate the rate of brine flow. This is accomplished by shutting off the pumps and using a bucket of known capacity to catch the fiee flowing brine and noting the time that it takes to fill the bucket. From this measurement, the driller can determine the rate of flow in barrels per minute. If the flow rate is not so great as to cause concern ofover filling the reserve pit, drilling would continue until the hole reaches the Bell Canyon Formation. The intermediate casing would then be tun and cemented. Once in place, the casing string would isolate the over pressurized zone and prevent fbrther flow to the surface.

A very heavy brine flow, however, such as one that could potentially fill the pit within one to two hours, would not be allowed to continue. Corrective action would be taken in the form of killing the flow of brine. This is accomplished in the field by shutting in the blowout preventor (BOP) and calculating the downhole pressure. Using this pressure, the driller then determines the quantity of barite (the mud additive most often used) that must be added to the drilling fluid to sufficiently increase the hydrostatic pressure exerted by the column, so that the differentiai pressure results in downward flow itom the drilling fluid column into the formation. When brine flow to the surface has stopped, drilling continues to the depth originally determined in the well plan. Once this depth is reached, intermediate casing is run and cemented in place.

The drillers reported that measures to kill pressure driven flow to the surface are rarely required. They are generally able to drill through the Castile Formation while brine is flowing and successfblly set the intermediate string in the Bell Canyon Formatien (the typical drilling horizon).

Using a typical drilling scenario based on a pressurized zone at a depth of 3,000 feet (915 meters) with a hydrostatic pressure of 1,560 pounds per square inch (1.08 x lo7 Pa), flow rates necessary to fill the pit at one and two feet per hour increments have beeh calculated. This calculation is provided below.

10 Assume: A. B. C. D. E. F. G. H. I.

J. K. L. M. N. Well Depth, A2 : Mud Pit Volume: Casing Weight: Casing Inner Diameter Open Hole Inner Diameter Unit Volume: Unit Volumetric Flow Rate: Drilling Fluid: Density (p):

Friction Factor (f): Internal Casing Pipe Area (A): Gravity (8): Velocity (1 ft/ hr Brine Pit Disp.): Velocity (2 ft/ hr Brine Pit Disp.): 3,000 feet 125 feet * 125 feet * 6 feet = 93.750 cubic feet = 701.298.701 gallons 32 pounds per foot 8.625 inches 11.5 inches = 0.958 feet 15,625 cubic feet per foot of vertical height 4.34 cubic feet per second Case 1: 10.25 pounds per gallon brine Case 2: barite Case 1: 76.68 pounds per cubic foot Case 2: 263.3 pounds per cubic foot 0.06 for coated casinglopen hole x d2/ 4 = ~( 0.958)~/ 1= 0.721 square feet 32.17 feet per square second V = QIA= 4.31* 1/ 0.721 = 6.017 feet per second V = QIA= 4.34* 2/ 0.721 = 12.034 feet per second Equation:

Derived from Gieck (1987) For the case of 1 f a r brine pit displacement: AP = 1,654.099 pounds per square inch (1.14046 x lo7 Pa) gauge For the case of 2 fthr brine pit displacement: AP = 1,823.784 pounds per square inch (1.25745 x IO' Pa) gauge The calculation shows that a one foot per hour pit level increase would be possible only if encountering bottom hole pressures of at least 1,654 pounds per square inch gauge. A two foot per hour increase in the pit level would require a pressure of 1,824 pounds per square inch (1 25745 x lo7 Pa) gauge. Those surveyed indicated that pressures of this magnitude are seldom experienced in the Delaware Basin, and that both one and two foot per hour pit IeveI rises would be noticed by the driller.

The low rate of occurrence of abnormally pressured brine zones in the Delaware Basin (or WIPP vicinity) has been fbrther supported by information documented in the drilling records. Using databases assembled by PI and MMC, which provide well name, operator, location, total depths, casing sizes, and dates of drilling and completion, the DOE has developed a list of all oil and gas wells that have been drilled within the New Mexico portion of the Delaware Basin. Wells on this list are located in the southern portions of Eddy and Lea Counties, which are the only New 11 Mexico counties within the Delaware Basin.

The well files at the OCD offices in Artesia and Hobbs, New Mexico, (the NMOCD maintains the records of wells drilled on both state and federal leases in Eddy and Lea Counties) were idso reviewed. The files record activities entered by the drillers Erom initiation of drilling to completion of a particular well. Drillers note in these reports any unusual occurrences such as abnormally pressured brine. Incidents of this type are reported in the form of daily reports. Although there is no requirement that they do so, drillers may include pressurized brine encounters in their daily reports, even if there has been no effect on drilling activities. The Texas portion of the Delaware Basin was not evaluated. The rationale for not including the Texas portion is that wells nearer the WIPP land withdrawal area are of greatest interest in determining the presence of brine within the Castile.

Of a total of 3,406 well files reviewed, 28 were found to have notations by the driller indicating the encounter of pressurized brine.

Another factor influencing performance assessment analysis is the time that flow fiom a pressurized zone to the surface would continue prior to the installation of the intermediate casing string. As stated previously, the intermediate casing is typically run when the Bell Canyon Formation is reached, which is approximately 4,000 feet (1,220 meters) in depth near the WIPP site. At this time, the drill string is removed from the hole and intermediate casing is run and cemented fiom 4,000 feet (1,220 meters) to the surface. Mer cementing is completed, the driller is required by regulation to wait 24 hours for the cement to set before drilling resumes.

Drilling time from the repository depth at 2,150 feet (656 meters) through the remaining portion of the Salado and all of the Castile (an additional 1,250 feet; 381 meters) is calculated to be 54 hours. This number is based on drilling rates of 50 to 60 feet (1 5 to 1 8 meters) per hour from the base of the surface casing at 800 feet (244 meters), to the top of the Castile at 2,750 feet (838 meters) (New Mexico Junior College 1995). The drilling rate is expected to slow to 30 to40 feet (9 to 12 meters) per hour through the Castile (New Mexico Junior College 1995). Once the Bell Canyon has been entered, an additional 14 hours are typically required to remove the drill string from the hole and run and cement the 3,200 feet (976 meters) of casing.

In the majority of drilling operations, the driller will be able to safely drill ahead, reach the Bell Canyon, and complete the intermediate casing, without having to resort to killing the pressure. However, if pressures encountered are great enough that the driller is forced to engage the BOP and add weight to the drilling fluid, the maximum time that flow to the surface would occur is one to two hours. Therefore, two hours represents a reasonable lower bound duration and is derived from high pressure situations where the BOP would be used to stop the flow to the surface and control the pressure by adding weight to the drilling fluids.

12 DEL. 7.6 Borehole Permeability Assessment Human intrusion scenarios evaluated in the WIPP performance assessment assume that one or more boreholes intercept the repository and that the boreholes are subsequently plugged. To support the evaluation of the potential consequences of scenarios of this type, the DOE has assessed the permeabilities that may be expected in plugged boreholes in the Delaware Basin. The permeability of the borehole plugs is important because this is a measure of the quantity of contaminated fluids that could hypothetically flow through the borehole plug.

Results of this work are reported in Inadvertent Intrusion Borehole Permeability, included as Attachment 7. The DOE report summarizes plugging practices in the Delaware Basin and identifies three plugging configurations typically used in the basin:

a single continuous plug through the evaporite sequence,

* a two plug configuration that contains one plug in the Bell Canyon Formation (below the depth of potential brine reservoirs) plus one plug in the Rustier Formation (between the Culebra aquifer and the repository), and a three plug configuration that contains the two plugs described for the two plug configuration, plus an additional plug in the Salado Formation.

Conclusions presented in the DOE report for each of these configurations include the following.

m In the case of the single continuous plug, the permeability of the plug is expected to remain at 5 x square meters for the entire 10,000 year period of interest.

* For the two plug configuration, the permeability between the repository and the surface is expected to be 5 x lo '' square meters for a period of 200 years and lo" square meters to 1 O I4 square meters after that. The plug between the Castile and the repository is expected to have a very high permeability for 200 years and values of lo" to square meters up to 1,200 years, and to 1 O I5 square meters after that.

With the three plug configuration, the permeability between the intermediate plug and the surface is expected to be 5 x meters after that. The intermediate plug is expected to have a permeability of 5 x IO" square meters for a median time of 5,000 years, and the borehole between the Castile and the repository is expected to have values ranging from lo" to years more, and square meters for 200 years and lo '' to square square meters fur 1,000 to IO '' square meters after that.

Under all scenarios considered in the report, the permeability of the borehole plug systems never exceed that of silty sand (lo" to lo '' square meters).

13 3.0 SCHEDULE DELAWARE BASIN DRILLING SURVEILLANCE PROGRAM The implementation of the Delaware Basin Drilling Surveillance Program was October 1 , 1997 at the start of the fiscal year (FY98). Appendix DEL was formalized and finalized in March, 1996 for submittal in the Compliance Certification Application (CCA). From March, 1996 untiI October, 1997 no surveillance was performed in the Delaware Basin on drilling activities. The original data presented a history of when the wells were drilled and what their status was when they were drilled.. The focus now is not only when a well was drilled but what its current status is. To fill in the blank spaces an aggressive schedule (see Figure 6 ) was developed to bring the program up to date.

4.0 1998 UPDATES DELAWARE BASIN DRILLING SURVEILLANCE PROGRAM The information provided in this section are the results of the ongoing Delaware Basin Drilling Surveillance Program. One of the purposes of the program is to report any deviations from the material that was provided in Appendix DEL of the CCA.

4.1 Drilling Fluids Since Appendix DEL of the CCA was finalized no changes have occurred in the drilling practices in the Delaware Basin. This was accomplished by a review of the records of all new wells drilled in the New Mexico portion of the Delaware Basin since 1995. A change in drilling practices would necessitate a change in the application of drilling fluids. The mud programs (or drilling fluid programs) have remained basically the same as what was reported in Appendix DEL.

4.2 Shallow Driliing Events Commercial sources and visits to the OCD, BLM, and State Engineer's offices are used to identify new wells. A look at the well fife will identifi whether it is a shallow event or not. Any new well drilled to a depth of less than 2,150 feet will classify the well as shallow. This applies only to wells that are located within the Delaware Basin. Most shallow events are fiom water and mineral exploration in the immediate area although no new mineral exploration has been identified in the last two years.

4.3 Deep Drilling Events In the Delaware Basin deep drilling events are usually associated with oil and gas drilling. Commercial sources and visits to the OCD offices are used to identify these events. If the total depth reached is greater than 2,150 feet it is classified as a deep drilling event.

14 4.4 Rate of Drilling in the Basin  1998 The following information is derived from the databases maintained by the Delaware Basin Drilling Surveillance Program. It depicts both shallow and deep drilling events. This information also adds to the numbers presented in the tables presented in Appendix DEL. The supplied data is current through 8/ 1/ 98. In Appendix DEL certain well types were shown but not used in the calculations for intrusion rates (WTPP boreholes). This does not occur in the updated material. One reason for this is that deleting certain holes fiom the calculations does not make much difference due to the number of holes, thus, all holes will be used in the count.

HYDROCARBON HOLES Dry Hole Oil Well Gas Well OiYGas Well Drilling or Waiting on Paperwork Injection Well Salt Water Disposal Well Service Well Junked & Abandoned Hole Plugged Oil Well Plugged Gas Well Plugged Oil & Gas Well Plugged Injection Well Plugged Salt Water Disposal Well Sulfur Boreholes Potash Boreholes W P Boreholes Stratigraphic Test Holes Water Wells Salt Wells Core Holes 2,425 3,707 782 126 15 3 02 1 105 1 1 1 518 164 56 0 o_ 8,312 OTHER RESOURCE HOLES 584 0 0 1,222 1,706 8 45 3,565 1,006 1,775 584 4 46 9 37 17 41 157 76 0 8 4 3,764 0 1,005 198 2 590 4 2 1,801 TOTAL 3,43 I 5,582 1,336 130 61 311 38 I22 152 675 240 56 8 4 12,076 TOTAL 584 198 1,224 2,296 12 47 5,366 1,005 15 Total Resource Holes in the Delaware Basin 11,877 5,565 17,442 ADDITIONAL INFORMA TION l! Yuumx TOITAL Hydrocarbon holes > 2,150' deep Hydrocarbon holes < 2,150' deep S u b boreholes > 2,150' deep Potash boreholes > 2,150' deep WIPP boreholes > 2,150' deep Stratigraphic test holes > 2,150' deep Water wells >2,150' deep Salt wells > 2,150' deep Core holes > 2,150' deep 1 1,442 634 89 19 10 56 0 0 0 Total of all resource holes > 2,150' deep Total of all resource holes in the Delaware Basin 11,675 5.767 17,442 Total of all resource holes < 2,150' deep LWTRUSION RATE The intrusion rate is calculated as follows: (number of holes) X 10,000 years / area (23,102 square kilometers) / 102 years. The original calculation was for 100 years but that was through 1996. Each year that passes will show another year at the end of the formula. Doing the calculation this way yields the average and also keeps a running account of the total number of wells in the Delaware Basin. This is a more conservative method than the one shown beIow.

Another way to calculate the intrusion rate is to maintain the 100 year standard. This would mean dropping all the wells drilled in the first year. At the current rate of drilling the number of welIs would actually decrease over time as the boom years of oil drilling are long gone. This would eventually lower the intrusion rate. At any one time only the number of wells driIled during the 100 year span would be accounted for. This method would not give a true accounting of what is happening in the Delaware Basin over the entire period of interest.

1998 Intrusion Rate Shallow holes = 24.47 boreholes. per square kilometer Deep holes = 49.55 boreholes per square kilometer 4.5 New Mexico Well Count and Intrusion Rate For added interest the counts and intrusion rates were re calculated using only the wells in the 16 New Mexico portion of the Delaware Basin. The intrusion rate worked out to be 70 holes per square kilometer utilizing all of the known deep holes.

4.6 Pressurized Brine Encounters Within the Delaware Basin 28 wells were originally identified as encountering pressurized brine in the Castile. AI1 new weirs identified since the formulation of Appendix DEL have been researched for encounters of brine. None were found to have encountered pressurized brine.

4.7 Borehole Permeability Assessment The plugging practices and requirements as identified in Appendix DEL are stil1 the same as currently being conducted in the Delaware Basin (see Figures 2 and 3). Therefore, the calculations presented in the Appendix DEL assessment have not changed.

4.8 Borehole Depths and Diameters The typical borehole depths (related to the oil bearing strata) and the diameter of the portion of the drilled hole have not changed from those which were reported in Appendix DEL. Borehole depths are variable across the Delaware Basin due to the different depths at which oil and gas are located. Hole sizes vary from well to well but several stand out as being the most commonly used by the local operators (see Figures 4 and 5 ).

4.9 New Drilling Technology Breakthrough developments in autodriller and mud system technologies have been incorporated into a series of drilling rigs that not only provide drillers and operators with the tools and means to drill wells faster and safer, but may ultimately alter drilling work processes and procedures. Utilizing this concept reduced drilling times by 37%, required no mud pits resulting in faster cleanup times, allowed for a smaller footprint which saved operator location construction costs, and enabled rigging up on small environmentally sensitive locations. Already one well has been drilled in this area utilizing this technology.

5.0 SUMMARY 1998 DELAWARE BASIN DRILLING SURVEILLANCE PROGRAM The Delaware Basin Drilling Surveillance Program continues to monitor the drilling of oil and gas wells within the Delaware Basin. This information is added to the existing databases as necessary. Another ongoing process is the determination of the current status of each well within the nine townships. Any changes require updating the existing databases. Numerous changes do occur, such as operator changes, oil to injection, gas to plugged, etc. Since the finalization of Appendix DEL in the spring of 1996 there have been two very productive years in oil and gas drilling within 17 the Delaware Basin, specifically the area immediately south of the site. Since January, 1998 the price of crude oil has dropped $3.00 per barrel of oil causing the drilling rate for oil in this area to become almost non existent. Well status verification for the New Mexico portion of the Delaware Basin is 95% complete. 3,773 known hydrocarbon wells exist in this area. This total includes all of the wells drilled in this area since the finalization of Appendix DEL.

This year the Texas portion of the Delaware Basin is scheduled to undergo the same process as was accomplished in the New Mexico portion of the Delaware Basin the last year. Due to current oil prices, this program does not expect many new wells to be drilled in this area over the next year. Since many wells will change from oil and gas to salt water disposal, injection, or plugged and abandoned status over time, verification of well status is needed to accurately monitor these resource extraction activities.

6.0 QUALITY ASSURANCE Activity will be conducted in accordance with the appropriate portions of Section 2.1. of the CAO Quality Assurance Program Document (CAO QAPD). Specifically, procedures will be followed (and prepared as needed) to assure the accurate recording of information and data taken from outside sources, and the verification of any calculations performed to develop modeling parameters from field data. When possible and practical, field verification will be conducted. Field verification shall be mandatory w i t h one mile of the WIPP site boundary. Field data wiII be recorded in permanent notebooks in accordance with CAO QAPD *

18 7.0 REFERENCES (Section 7.1.4, DOE 1996b) Chapter 7, Section 7.1.4, Effectiveness of the Active Institutional Controls Program, of the Compliance Certification Application, DOEKAO 1996 2 184, October 1996.

Appendix DEL Appendix DMP Oil & Gas Journal, 96: 50, 12/ 14/ 1998 Autodriller, cylindrical mud tanks, generate breakthrough developments in drilling technologies CAO QAPD 19 Figure 1 Wipp Site, Delaware Basin, and Surrounding Area 20 AN3BRPTf 5,000 6,000 7.000 9,000 B. 250 .Ip Fasing Cemerring :or 8.625" 3.3.

.I I .. 4 :so' Cerrenr ?lug 8.625" 0.9. interrneaiote Casing i NOT TO SCALE :

Casing Cementing for 5.50" O. D. Production Casing 50' Cemenr ?tug %st Iron Elridge Plug I SRAPiiiC LEGEND 5.50" O. D. 2roduction Cosing . ..' . . .' . ,.,# C3ncrete .. .. . , . ,

3: eel Casing Czs: l r m Figure 2 Minimum Oil and Gas Well Plugging Requirements in the Delaware Basin 21 2,000 3.000 4,000 5,000 6.000 7.000 8.000 8.250 GRAPHIC LEGEND 5.50" 0. D. Production Casing Figure 3 in the Potash Resource Area of tie &laware Basin Standard Oil and Gas Well Plu gin Practices 5 I +2325'

W 4 Ln < 0 L 6075' _. . ~' :; ..

? '_.

.I ..

_. . .... ... .. ... .. ..

,I ,.

.. ..

572 .... ...... ..: . ? ......... ... .......... y , .. .. ....

.... .. .. ' .. . . 1 :

. I .. .. ._ ..... ... : .. " .. .. , .. S L; R FAC E CASING SiZE C >t t 'ABLE AT i3WER LEFT) I  r

... ..

.. ... ..... *OLE SIZE (SEE TABLE AT LOWER LEFT) i '

.. ..... ; ..

\2 7/ 0" TUBINt lfl PERFORATIONS > CMT RETAINEF?

\IOT 73 SCALE Figure 4 Typical Well Structure and General Stratigraphy Near the WlPP Site 23 I

I f i I  3000 FT.

i 1 2ASTILE    I /  4000 FT.

11000 Fr.

12000 Fr.

13000 FT.

14000 FT. 1 BELL CANYON I I I 1 BRUSHY CANYON I I I 30NE SPRINGS I I I     15000 FT.      16000 F l .      '7000 FT.      19000 FT.

OURCE: GEOLOGICAL C++ ARACTERIZA: ION QEFJORT NOT ro SCALE ~

Fgure 5 Stratigraphy for WIPP Site and Surrounding Area 24 ..

Attachment D. 5 Effective Date:

Cognizant Section: Mine Engineerinq Approved By:

Cognizant Department: Engineering Approved By: WIPP Underground B Surface Surveying Program WP 09 ES, O l, Rev. 1 Table of Contents ii ACRONYMS AND ABBREVIATIONS ..............................................................................

.................................................................................................... I 1 .O INTRODUCTION 1 2 1.1 Background ....................................................................................................... 1.2 WlPP Surveying Historv and Accuracy Reauirements .....................................

5 2.0 ADMiNlSPRATlON ................................................................................................. 5 2.1 Organization ..................................................................................................... 5 2.2 Responsibilities ................................................................................................ 5 2.3 Training and Qualifications ...............................................................................

5 3.0 TECHNICAL PROGRAM DESCRIPTION ............................................................... 6 g Prowam ..................................................................... 7 3.1 3.2 Surface Surveyinq Program ............................................................................. 8 3.3 Subsidence Monitoring Program ......................................................................

11 4.0 QUALITY ASSURANCE ........................................................................................ 12 4.1 Survey Equipment Control .............................................................................. 12 4.2 Procurement ................................................................................................... 12 4.3 Instructions, Procedures, and Drawings ......................................................... 12 4.4 Document Control ........................................................................................... 13 4.5 Control of Purchased Material, Equipment/ Services ...................................... 13 4.6 identification and Control of Items .................................................................. 13 4.7 Software Requirements .................................................................................. 14 4.9 Control of Nonconforming Conditionslltems ................................................... 14 4.10 Corrective Action ...................................................................................... 14 4.1 1 Records Management 15 4.1 2 Audits and Independent Assessment ....................................................... 15 4.13 Data Reduction and Verification ..............................................................

15 5.0 IMPLEMENTATION MATRIX ................................................................................ 15 5.1 WID Mine Engineerinq ...................................................................................

15 6. Q REFERENCES ...................................................................................................... ..............................................................................

I round & Surface Surveying Program CCA Compliance Certification Application DOE Department of Energy FGCS Federal Geodetic Control Subcommittee GPS GIobal Positioning Survey K kilometer .

mm millimeter NAD 27 NGS National Geodetic Survey QA Quality Assurance QAPD Quality Assurance Program Description PRS Project Records Service SDD System Design Description TRU Trans u ran ic WID Waste Isolation Division LVl PP North American Datum of 1927 Waste Isolation Pilot Plant WlPP Underground & Surface Surveying Program WP 09 ES. 81, Rev. 1 1.0 1NTRODUGTION This document defines the Surveying Program and responsibilities currently being carried out by the Waste Isolation Division (WID) Mine Engineering Surveying Section. The Surveying Section's program plans and functions are designed to provide location and alignment information necessary to establish precise horizontal and vertical control for all aspects of underground and surface configuration. Surveying activities currently consist of, but are not limited to, the following:

a Underground site configuration, controi, and update a Surface site configuration, control, and update a Operations and engineering support 8 Geotechnical ground control support Surface subsidence monitoring These acfivities are implemented and controlled by this document, Federal Geodetic Control Subcommittee (FGCS) standards, and #eWP A 3 1 WlPP Quality Assurance Program Description (QAPD).

1.1 The Surveying Program provides surveying services and information to any section or group within the W1D Engineering Department for planning, engineering andlor documentation purposes. The Surveying Program also provides basic information to other WID sections and departments so that the safe disposal of transuranic (TRU) and mixed waste can be demonstrated both in the short term (during the operational life of the faciiity) and in the long term (following decommissioning), while satisfying all regulations governing permanent isolation of the waste. The program provides construction surveying for WID engineering, planning, and documentation purposes, but does not include construction surveying for contractors. Drivers for this program include the Compliance Certification Application, the Occupational Safety and Health Act, the Mine Safety. and Health Act, and Waste isolation Pilot Plant (WIPP) System Design Descriptions (SDDs). The program also helps ensure the facility operates safely and that the data are available to make decisions for managing and performing engineering and operational activities. Each surveying activity is controlled by this Surveying Program that describes the general scope of the survey, its methodology, and quality assurance (QA) requirements.

1 To satisfy the listed regulatory drivers, certain activities and functions are required of the Mine Engineering Surveying Section. These commitments are listed as follows:

J Perform an annual subsidence monitoring survey Publish an annual report of subsidence survey data, including a comparison with prior years data 0 Maintain, replace, and expand the subsidence monument network, as required Maintain state of the art leveling equipment and capability I .2 0 Surveying was one of the first activities to take place at the WlPP site. Coordinates for the site were brought in from the National Geodetic Survey (NGS) monument ORustlerO. New Mexico State Plane Coordinates North American Datum of 1927 (NAD 27) are used at the WlPP for control. In general practice at the WIPP, these coordinates are truncated for use as the site coordinate system. To arrive at the site coordinates, 490,000 feet was dropped from the Northing and 660,000 feet was dropped from the Easting of the New Mexico State Plane Coordinates NAD 27. The base point for t h e WlPP site was the section corner common to Sections 20, 21 , 28, and 29 in T. 22 S., R. 31 E. During 1986, a surveying contractor was retained to resurvey the site to bring in coordinates and transfer them underground. Surveys were run from the NGS monuments UBerryfl and I] 5rininstool, fl using NAD 27 values. Because the originai base point had been lost, a new base point (PT 30) was chosen and new plant coordinates were calculated for all existing points. It is important to remember that plant coordinates are on a rectangular grid while State Plane Coordinates take into account that the earth is a spheroid. It is not possible to make a direct comparison of the two systems for more than one point at a time.

In 1993, a resurvey of the underground was conducted. Horizontal locations were traversed, and the true bearings were checked using a gyro compass. Additionally, a level survey was conducted through 20 benchmarks located throughout the underground. Because of salt creep, the horizontal location points are placed in the roof on the center line of the drifts and vertical benchmarks are placed in the drift walls at approximately mid height of the drift.

.. . The vertical surveying monitoring commitments in the Gempkscc: Cs+& ez& w Ap@ s& m+ CCAfdivides the monitoring into three phases: developmental, operational, and post closure. During the initial developmental phase, 31 4 kilometers of First Order, Class I survey was performed by the NGS in 1977. The NGS network was resurveyed in 1981 and the relative movement between Carlsbad and the WlPP site was measured to be about 2 centimeters. The relative motion across the network ..

2 WIPP Underground 8a Surface Surveying Program WP 09 ES. 01, Rev. 1 was down to the east and up to the west. The 1981 NGS survey also established new survey lines that connected the previous First Order benchmarks through Carlsbad to Second Order survey lines through Eunice and Hobbs Turing this survey, benchmarks were placed over the Nash Draw from the north end tu ihe Remuda Basin, over potash mines, the WlPP site, and the San Simon Sink.

Independent of the NGS work, but using the established First Order, Class 1 NGS benchmarks, an additional 52 benchmarks were installed by surveying companies working under contract to WIPP. The benchmarks were installed in a grid on approximately 1,000 foot centers. This grid covers the WlPP planned repository and extends about 1,000 feet beyond the edge of the planned ?xtent of the waste panels. Second Order, Class I t FGCS specifications were used for these benchmarks. This work was completed in 1986.

A Global Positioning Survey (GPS) was conducted in 1994 by the WlPP Site Survey Section in conjunction with a contractor. The GPS was used to check horizontal control and independently verify the Second Order, Class I I subsidence survey conducted in 1994. In 1996, the WlPP Site Survey Section, in conjunction with a contractor, performed a First Order, CIass I level survey from the Berry Monument, 20 miles east of the WlPP site. The survey went over the 52 existing subsidence monuments at the site and back to the Berry Monument.

At the start of the closure phase, it is anticipated that a review of all past subsidence surveys and the adequacy of the existing subsidence stations will be conducted. New subsidence stations, if needed, will be installed to FGCS standards. A survey that achieves First Order, Class I accuracy may then be conducted. Information from this survey will be combined with published information from all previous work to form a baseline database for subsidence information in accordance with the CCA. The CCA states that this post closure survey is to be repeated in three years. Thence, it is to be repeated every ten years for the next 100 years, or until the Department of Energy (DOE) determines that further surveys are not required.

The U. S. Department of Commerce is responsible for establishing and maintaining basic control networks for the nation. The Department of Commerce carries this out through the NGS which establishes surveys, then adjusts and publishes the results on horizontal and vertical geodetic control networks. As part of the control program, the FGCS prepares classification and standards for geodetic control surveys. The following tables outline general requirements for horizontal and vertical control.

3 WIPP Underground & Surface Surveying Program WP 09 ES. 01, Rev. l 4 WlPP Underground & Surface Surveying Program WP 09 ES. 04, Rev. 1 Horizontal surveys at the WlPP are conducted to FGCS accuracy standards for Second Order, Class I I surveys. The Second Order, Class 11 level of accuracy is the standard recommended for the type of surveying performed at the WlPP by the FGCS. It was also established as such by the original design basis documents and is carried through into t h e AUOO SDD. First Order, Class I results are routinely obtained by the WIPP Site Surveying Section. Subsidence surveys are carried out in the same manner as vertical surveys. In subsidence measurements, the error is determined by both the equipment used and the distances between the stations. As defined by the FGCS a First Order, Class I level survey has a maximum loop error of 4mm JK where K is the length of survey loop in Kilometers. A Second Order, Class II level survey has a maximum loop error of 8mm JK or two times the error of a First Order survey. Technoiogical advances in electronic digital levels allow the user to obtain numerical results that far exceed the minimum Second Order, Class II standard.

2.0 ADM 1 N l STRATI ON 2.1 Oraanization The organizational structure of the WID is described in ]

5 WiPF Underground & Surface Surveying Program WP09 ES. 01, Rev. 1 WP 13 1. The Mine Engineering Site Surveying Section reports to the Mine Engineering Manager. The underground and surface Surveying Program is within the cognizance of the AUOO System.

2.2 The Mine Engineering Site Surveying Section cognizant engineer and staff are responsible for achieving and maintaining quality in the Mine Engineering Site Surveying S ect io n.

2.3 Personnel who perform specific tasks associated with surveying, surveying data collection, survey data reduction, and Quality Control measures are trained and qualified in the application of the specific requirements to complete their tasks. Minimum training for Engineering personnel is identified in the WP 09. Engineering Conduct of Operations.

3.0 TECHNICAL PROGRAM DESCRIPTION The VJIPP Underground and Surface Surveying Program is divided into three parts: underground, surface, and subsidence monitoring. Underground and surface surveying covers all surveying performed underground and on the surface to provide location, alignment and elevation information for all departments concerned with surface operations and TRU waste handling. Control points are maintained upon which the location, alignments, and elevations are based. This information is also used for updating existing drawings and surface maps. Subsidence monitoring provides for leveling and horizontal control of all the subsidence monuments within the 16 square miles of the surface properties (WIPP Land Withdrawal Area). These surveys are either conducted by the WlPP Surveying Section personnel, or by qualified contractorhendor personnel under the direct supervision of the WlPP Mine Engineering Surveying Section. Finally, this plan gives the Mine Engineering Surveying Section the flexibility to provide qualified surveys and survey information to any other internal WID section, provided the request is approved by the Mine Engineering manager.

3.1 Underaround Survevincl Proaram The purpose of the Underground Surveying Program is to maintain accurate location information of the underground structures and to provide alignment for new excavations. The Underground Surveying Program ensures continuing confirmation of underground configuration through surveys. These surveys generate data that are used in underground planning, underground extensions and TRU and mixed waste emplacement. Information from the surveys is used to document the existing extent,

6 WIPP Underground & Surface Surveying Program WP 09 ES. 01, Rev. 1 size, and location of the entries crosscuts, panels, and rooms of the underground. Activities associated with this program include control surveys, level surveys, alignment point installation, grade point installation, laser alignment, and as found surveys. Other surveying activities are performed as needed.

Underground surveying is the only way to provide information for the construction and precise location of underground structures. Because of the safety constraints inherent in handling and emplacement of TRU and mixed waste in the WIPP underground, state of the art surveying equipment and methods are used. The Underground Surveying Program provides information basic to the design, construction, and operation of the repository.

3.1. q Methodology Routine underground surveys are carried out in accordance with common industry practice, and in accordance with standards specified by the FGCS. Other surveys which are in development, or are not routine are performed in accordance with common industry practice, or individual program plans.

a. Routine Survevs Horizontal Control Surveys  Horizontal Control Surveys are made as the repository is excavated to provide accurate location of existing and planned openings.

Vertical Control Surveys  Vertical Control Surveys are made as the repository is excavated to provide precise elevation and vertical control of existing and planned openings.

Alignment Surveys  Alignment Surveys are performed as required to provide alignment and grade points for mining operations as excavation of the repository proceeds. Alignment Surveys include the setting of laser alignment instruments to coincide with the horizontal control grade points.

Mapping Surveys  Mapping Surveys provide information of the existing location, size, and shape of the underground structures.

Location Surveys  Location Surveys. provide precise location information on geotechnical instruments and stationary underground structures.

b. Other Underqround Surveying Activities Other underground surveying activities are performed as required. An example of other surveying activities might include a shaft piunbing survey.

7 WIPP Underground & Surface Surveying Program WP 09 ES. 01, Rev. 1 C.

All survey data are collected electronically, downloaded, and processed using approved software programs. Distribution of information is accomplished by electronic files. A hard copy is provided to a customer as required. Storage of survey information js maintained on the Survey Section's computers, and a back up file resides on the WIPP Intranet. A hard copy of the information is also maintained in the Survey Section files.

3.2 The purpose of the Surface Surveying Program is to maintain accurate location information of surface structures and to provide location and topographical information for planning and construction of new surface structures. The Surface Surveying Program ensures continuing confirmation of site configuration through surface surveys. These surveys generate data that is used in site planning and new surface projects. Information from the surveys is used to document the existing extent, size, and location of the site facilities as they exist. Activities associated with this program include control surveys, level surveys, and existing condition surveys. Other surveying activities are performed on an "as needed" basis.

Surface surveying is the only way to provide information of the construction and precise location of facility structures. Because of the safety constraints inherent in handling of TRU and mixed waste at the WIPP, state of the art surveying equipment and methods are obtained and used. The Surface Surveying Program provides information basic to the design, construction, and operation of the surface facilities.

3.2.1 Meth odo I og y Surveys performed on a routine basis are carried out in accordance with common industry practice, and in accordance with standards specified by the FGCS. Other surveys which are in development, or are not routine are performed in accordance with common industry practice, or individual program plans.

a. Routine Surveys Horizontal Control Surveys  Horizontal Control Surveys are made as needed for horizontal control.

Vertical Control Surveys  Vertical Control Surveys are made as needed for vertical control ,

Topographic Surveys  Topographic Surveys are performed as required to provide 8 WIPP Underground 8 Surface Surveying Program WP 09 ES. 61, Rev. 1 planning and construction information for surface projects.

Mapping Surveys  Mapping Surveys provide information of the existing location, size, and shape of existing surface facilities.

b. Other Surface Surveying Activities Other surface surveying activities will be performed as required. An exampie of other surveying activities might include a GPS Survey.

C. Data Processing, Distribution, and Storage All survey data are collected electronicaily, downloaded, and processed using approved programs. Distribution of information is accomplished by electronic files. A hard copy is also provided to a customer, if needed. Storage of survey information is maintained on the Survey Section's computers and a backup file resides on the WlPP Intranet. A hard copy of the information is also maintained in the Survey Section's files. ,

3.3 @

Subsidence is defined as the tertical movement of the land surface anywhere within a defined subs i den ce bas i n . S peci f i ca I I y , subs i den ce monitoring comprises the p re ci se measurement of the relative vertical movement of the land surface which can be in the form of uplift (upwards movement) or subsidence (downwards movement) relative to an assumed fixed reference point. The fixed reference point is assumed to be fixed since it is placed outside the subsidence basin. However, it is also subject to some of the same factors and processes that affect and cause surface movement. Thus, it may also be in motion. The techniques used to monitor subsidence measure the vertical height difference between an array of markers on the surface and is typically performed with a leveling survey. Under normal conditions, one reference benchmark (ideally, one outside the potential subsidence basin) is utilized as the standard and the relative movement of other stations or benchmarks are compared to it in order to detect vertical differential movement over a period of time.

Subsidence can be caused by a number of factors. Potential examples could include mining, hydrocarbon (petroleum) exploration and production, petroleum production related water injection and disposal, water well drilling and completion, geoiogical deformation, and dissolution. Nash Draw is a major subsidence feature near the WIPP, caused by the dissolution of evaporites in the upper Salado and lower Rustler formations. Near the WIPP, localized mine induced subsidence is associated with areas where pillars were removed during second pass extraction in potash mines.

Subsidence monitoring of the surface area over the underground excavations is a consequence of several government and WID requirements. The WlPP SDD AUOO 9 WlPB Underground 8n Surface Surveying Program WP 09 ES. 04, Rev. 1 2.2.1 .e states, "The design of the mine will result in no more than one inch surface subsidence within 500 feet of the waste shaft." This is one of the original design parameters to assure protection of the WlPP surface structures. The size of the underground shaft pillar area and the layout of the WlPP mine plan is based on this parameter among others. Calculations to assure this low level of subsidence around the waste shaft were made by the WlPP architectslengineers.

The AUOO SDD document is the driver for the annual subsidence survey around the WlPP shaft and is conducted according to the specifications of a Second Order, Class I I Survey as stated by the FGCS. This classification allows for a maximum of about 215 inch vertical error per mile of survey. Thus, the maximum survey error is small enough that it will not mask any subsidence that might occur within 500 feet of the Waste Shaft.

The Subsidence Monitoring Program monitors vertical ground movement over the underground openings at WIPP. Monitoring stations were installed on the surface over the completed and planned underground excavations in a grid with spacing of approximately 1,000 feet. Precise level surveys are conducted annually to determifie any surface movement of the subsidence stations.

Subsidence monitoring was selected by the DOE as a basic long term monitoring tool. The initial subsidence survey is considered as the baseline condition. Because subsidence monitoring is performed annually, it is also useful as an active institutional control (short term) tool. Subsidence monitoring is non intrusive by nature and can be related to numerical assessments. Subsidence monitoring can detect substantial and detrimental, or slight and insignificant deviations from expected repository performance by comparing current subsidence values to previous loop surveys. Subsidence monitoring can be implemented independent of site utilities, providing useful data for a reasonable cost over a relatively long time period, and requires minimum maintenance to sustain a high quality performance level.

Subsidence monitoring provides information on vertical surface movement in mining areas due to creep closure of underground openings. This closure results in a subsidence basin on the surface the extent of which depends on the underground extraction. Establishing permanent stations over the underground openings and perjodically traversing through these stations with precise level surveys can determine the subsidence profile, provided these surveys are continued far enough into the future to allow the subsidence to reach the surface.

The Backfill Engineering Analysis Report, (WEC 1994), evaluates the potential for, and predicts subsidence caused by, the mining of the WIPP's shafts, drifts, and waste disposal rooms. These calculations account for a range of emplaced waste volumes, waste densities, and backfill types. Subsidence was also calculated for conditions where no backfill would be used.

10 WPP Underground & Surface Surveying Program WP 09 ES. 01, Rev. 'l This study predicts the maximum subsidence expected, and was performed to specifically estimate subsidence for long term repository performance monitoring and, as such, do not account for other factors that may influence subsidence such as local petroleum expioration and production, and potash mining.

The Surveying Subsidence Program provides the capability to assess the responses of the surface and underground facility due to surface subsidence.

3.3.1 Methodology The activities associated with the Subsidence Program are designed to:

Provide time related spatial information on surface subsidence within an area of 500 feet of the waste shaft during the operational phase of the repository 0 Provide time related spatial information on surface subsidence over the influence area of the underground openings with which subsidence predictions can be compared e Maintain a database of subsidence data e Provide an annual written report during the operational phase The process by which subsidence information is obtained may change with changing technology. Nothing in this plan will limit the adoption of new technology provided the performance of subsidence surveys follow the specifications described in the FGCS specifications and procedures for subsidence leveling surveys.

The following are activities of the Subsidence Program:

Subsidence Station Maintenance  Subsidence stations are maintained as needed. Restoration, replacement, and installation of new stations will be petformed according to FGCS specifications and procedures for Second Order, Class II Surveys.

Testinq When in use, daily tests are performed on all equipment used to ensure proper operation and calibration.

Subsidence Surveys  Subsidence surveys are performed annually until closure. After closure, in accordance with t h e CCA, subsidence surveys will be performed on the first and third year, then at ten year intervals for the next 100 years, or as long as DOE deems necessary.

Report and Database. A report is generated each year that details the current subsidence survey and summarizes previous year's values. Survey information will be 11 WWP Underground 8 Surface Surveying Program WP 09 ES. 01, Rev. 2 maintained in electronic files in two locations. Backup electronic files of the information are maintained on the WIPP Intranet.

4.8 QUAhlfY ASSU The WIPP Surveying Engineering Programs are governed by W w #lssufm into the technicat processes used for Surveying Engineering activities, as needed. The Mine Engineering manager, or assigned designee, is responsible for developing and maintaining this program. Surveying and subsidence surveying at the WlPP performed by qualified contractor/ vendor personnel are under the direct supervision of the WlPP Mine Engineering Site Survey Section. Vendor personnel who perform surveying related work must meet the following minimum standards: . Steps to ensure quality wi2 be incorporated 0 Five years experience in field surveying Demonstrated proficiency in the use of various precision leveling equipment specified for the monitoring prsgram( s)

a Demonstrated proficiency in the use of various related surveying software specified for the monitoring prograrn( s)

Demonstrated proficiency in the use of various GPS related equipment and software 4.1 Survev Equimnent Control Survey equipment processes use sound surveying/ scientific principles and appropriate standards. The WIPP's QA program and WID Engineering require that tests be performed on all equipment when in use to ensure proper operation and calibration.

Surveying equipment are controlled and calibrated in accordance with WlPP procedures. Results of calibrations, maintenance, and repair will be documented. Calibration records will identify the reference standard and the relationship to national and international standards or nationally accepted measurement systems. Calibration reports and operability tests are maintained by the WlPP Metrology Lab,

W W P 10 AD. 01 WlPP Metrology Program requires, at a minimum of every two years or in accordance with manufacturerus recommendations, all equipment be given complete maintenance and calibration checks by approved vendor( s) or a qualified laboratory to ensure the equipment is properly calibrated and/ or in proper working condition. For subsidence measurement equipment, maintenance and calibration are performed by approved vendors in accordance with national standards. Equipment is maintained and calibrated by vendors on the WIPP QA approved Qualified Supplier's 12 WlPP Underground & Surface Surveying Program WP 09 ES. 01, Rev. 1 List. The W1PP QA will process and ensure the adequacy of routine maintenance performed by the vendor.

4.2 Procurement Procurement of equipment is carried out in accordance with the appropriate poiicies and procedures for Design Class I 1 1B equipment. Technical requiren rents and services will be developed and specified in procurement documents. If deemed necessary, these documents will require suppliers to have an adequate QA program to ensure that required character ist i cs are attained .

4.3 Qual jty affecting activities performed by, or on behalf of, the Surveying Programs are performed in accordance with FGCS standards, WIPP approved work instructions, andor WIPP approved written plans.

4.4 Document Control The Mine Engineering manager identifies the individuals responsible for the preparation, review, and approval of Surveying Engineering controlled documents. Documents generated as a result of the subsidence surveys are reviewed by cognizant technical EngiT ieering perso'nnel to ensure their adequacy and accuracy. Controlled documents are reviewed in accordance with DOE and DOE/ WIPP QuaMy AsswaxeQ& Review  procedures.

4.5 Control of Purchased Material, EauiDmentlServices Measures are taken, in accordance with current WlPP procurement policies and procedures, to ensure that procured items and services conform to specified requirements. These measures will generally include one or more of the following:

Evaluation of the supplier's capability to provide items or services, in accordance with requirements, including the previous record in providing similar products or services satisfactorily e Evaluation of objective evidence of conformance, such as supplier submittals e Examination and testing of items or services upon delivery I f it is determined that additional measures are required to ensure quality in a specific procurement, additional steps may be provided for procurement documents and implemented by Surveying Engineering personnel and/ or the Quality and Regulatory Assurance Department. These additionai assurances may include source inspection 13 WIPP Underground 86 Surface Surveying Program WP 09 ES. 01, Rev. 1 and audits or surveillances at the supplier's facilities.

Measures are used to ensure that only correct and accepted items are used at the WIPP. All items that potentially affect the quatity of the Surveying Engineering Programs will be identified and controlled to ensure traceability and prevent the use of incorrect or defective items.

4.7 Computer program testing activities that affect quality related activities performed by the WID or their suppliers are accomplished in accordance with approved procedures as specified by the W W P 13 1,

Test requirements and acceptance criteria will be specified, documented, and reviewed and will be based upon applicable design or other pertinent technical documents. Required tests, including verification, hardware integration, and in use tests, will be controlled.

Testing of software will verify the capability of the computer program to produce valid results for test probiems encompassing the range of permitted use defined by the program d o w men ta t ion.

Depending upon the complexity of the computer program being tested, requirements may range from a single test of the completed computer program to a series of tests performed at various stages of computer program development to verify correct translation between stages and proper working of individual modules. This is followed by an overall computer program test.

Regardless of the number of stages of testing performed, verification testing and validation will be of sufficient scope and depth to establish that test requirements are satisfied and that the software produces a valid result for its intended function.

4.8 Handling, storage, and shipping of surveying equipment will be coordinated in accordance with the manufacturer's recommendations.

4.9 Control of Nonconforminq Conditionslitems Conditions adverse to quality will be documented and classified with regard to their significance. Gorrective actions will be taken accordingly.

14 WIPP Underground & Surface Surveying Program WP 09 ES. 01, Rev. 1 Equipment that does not conform to specified requirements will be controlled to prevent its use. Faulty items will be tagged and segregated. Repaired equipment will be subject to the original acceptance inspections and tests prior to use.

4.10 Conditions adverse to acceptable quality will be documented and reported in accordance with corrective action procedures and corrected as soon as practical. Immediate action will be taken to control work, and its results, performed under conditions adverse to acceptable quality in order to prevent degradation in quality.

The Mine Engineering manager, or designee, will investigate any deficiencies in activities.

4.11 Records Manaqernent Identification, preparation, collection, storage, maintenance, disposition, and permanent storage of records will be in accordance with approved WlPP procedures.

Generation of records will accurately reflect completed work and facility conditions while complying with statutory or contractual requirements. Records will be transferred and protected from loss and damage in accordance with w e s

m W P 15 PR, WlPP Records Management Program. .c 4.12 Audits and lndemndent Assessment Planned and periodic assessments will be conducted to measure management item quality and process effectiveness, and to promote improvement. The organization performing independent assessments will have sufficient authority to carry out its responsibilities. Persons conducting technical assessments will be technically qualified and knowledgeable of the items and processes to be assessed.

4.13 Data Reduction and Verification Computer programs, commercial data processing applications, and manual calculations that collect or maniputateheduce data will be verified. Verification must be performed before the presentation of final results of their use in subsequent activities, WlJ! becomes necessary to present or use unchecked results, transmittals, and subsequent calculations will be marked "DRAFT" until such time that the results are verified and determined to be correct.

5.0 IMPLEMENTATION MATRIX 5.1 WID Mine Enaineerinq 15 WIPP Underground 8 Surface Surveying Program WP 09 ES. 01, Rev. 1 WID Mine Engineering will be the cognizant technical organization with regard to the implementation of the WIPP Underground and Surface Surveying Program, including Subsidence Monitoring. As such, WID Mine Engineering is responsible for the perform a nce , rn e t hod0 I og y , ca 1 cu I at i o n s , and other associated activities i nvo I vi n g the collection, interpretation, and presentation of required data necessary to implement the program at the WIPP. For surface surveys outside the protected area, Mine Engineering personnel will ensure compliance with the National Environmental Policy Act (NEPA), if/ as applicable, prior to initiating survey activities. WID Mine Engineering is also responsible for the Annual Subsidence Monitoring Survey Report as well as all other necessary documentation. The Annual Subsidence Monitoring Survey Report will be published within each calendar year as a DOE document.

6.0 REFER Backfill Engineering Analysis Report, IT Corporation, (1 994)

WP 13 1 , Quality Assurance Program Description Compliance Certification Application Classification, Standards of Accuracy, and General Specifications of Geodetic Control Surveys, Federal Geodetic Control Committee (now Federal Geodetic Control Subcommittee), [I 9751 1980, Reprint 16 W I October 1998 Waste Isolation Pilot Plant Table of Contents ...................................................................................................... 1 . Introduction 1 2 . Equipment ........................................................................................................ 1 3 . Office Processing ............................................................................................. 1 4 . Methodology ..................................................................................................... 1 5. t Accuracy Summary by Loop ....................................................................... 5 6 . Adjusted Level Loops ....................................................................................... 8 7 . Adjusted Elevations (1 998) .............................................................................. 9 5 . General Summary of Results ........................................................................... 4 . .............................................................................. 8 Comparison of Elevations 10 List of Tables Table 1 . Description of 1998 Leveling Loops ...................................................... 4 Table 3. Detailed Loop Measurements ............................................................... 6 Table 2. Summary of Distance and Accuracy for 1998 Leveling Loops .............. 4 Table 4 . Adjusted Elevations by Loop ................................................................. 8 Table 5 . 1998 Adjusted Elevations ...................................................................... 9 List of Figures Figure 1 . Individual Loops. Total Loop. and Underground Excavations .............. 3 I List of Acronyms DOE Department of Energy DOY Day of year FGCS Federal Geodetic Control Subcommittee M& IE Measurement and Test Equipment NGS National Geodetic Survey WID Waste Isolation Division WlPP Waste Isolation Pilot Plant References Classification, Standards of Accuracy, and General Specifications of Geodetic Control Surveys, Federal Geodetic Control Committee (now Federal Geodetic Control Subcommittee), I19751 1980, Reprint.

Interim FGCS Specifications and Procedures to Incorporate Electronic Digital / Bar Code Leveling Systems, Federal Geodetic Control Subcommittee, ver. 4.0, dated July 15,1994.

WlPP Subsidence Monument Leveling Surveys 1986 7997, DOE I WlPP 98 2293, June 1998.

ii DQEWIPP 99 2293 I . Introduction Sections 2 through 7 of this report define the result of the 1998 leveling survey through the subsidence monuments at the WIPP site. Approximately 18 miles of leveling was completed through ten vertical control loops. The 1998 survey includes the determination of elevation on each of the 52 existing subsidence monuments and the WlPP baseline survey, and 14 of the National Geodetic Survey's (NGS) vertical control points. Digital leveling techniques were utilized to achieve better than Second Order Class I I loop closures as outlined by the Federal Geodetic Control Subcommittee (FGCS). The field observations were completed during September and October of 1998 by personnel from the Waste Isolation Division (WID) Surveying Group, Mine Engineering Section, Engineerirrg Department.

Finally, Section 8 contains Table 6, which summarizes the elevations for all surveys from 1986 through 1998, inclusive. A detailed listing of the 1986 through 1997 surveys is contained in the report, WPP Subsidence Monument beveling Surveys 1986 1997, DOWIPP 98 2293.

2. Equipment The observations were taker! with the WILD NA3003 Electronic Digital Level (WIPP M& TE ID# 0999) manufactured by Leica, and bar coded leveling staffs. The calibration for the NA3003 is valid from May 20, 1998, through May 20, 2000. The data were recorded electronically on the Leica GRMI 0 REC Module, which is built into the instrument. In addition to the electronic record, a written field log was maintained to record information that is not stored in the electronic record.

3. Office Processing Each day the data were downloaded from the GRMIO REC Module to the survey group computer. The original raw data files were maintained intact, and further processing was performed on a copy of the original raw data file.

Listing of the data, and the adjustment of the loops, was completed with the DIGILEV software (version 10.94d) from Leica Canada. The results, as summarized below, were extracted from the output of the DiGlLEV software.

4. Methodology The weather conditions during the observations of the 1998 survey were generally mild with moderate temperatures and light to moderate breezes.

The elevations for the 1998 survey are computed from the adjusted obsa, dafions based on the elevation of the subsidence monument, S 37 (3,423.874 feet). S 37 is the monument that is furthest from the influence of the underground 1 DOWIPP 99 2 excavations, and has been held fixed for all of the subsidence leveling surveys since 1993.

The monument, Pf 30, has been physically disturbed and was removed from the 1998 survey.

For visual reference, Figure 1 shows a graphic display of the individual loops, the total survey, and the relationship to the underground excavations.

2 Q 419*..   ..

s 37 e., ' 0 . _, ........ Loop 2 . . s51 ._ .. _ ..........  , .....  .. . . :'s38

Legend = Survey Pmnt 0 =Shaft x 418 e w m . s43;

!O ... .__.. . ............. ..*... >..

S%

'PTJO 3 , 0 PT 31 .y PT 21 S 27 Figure 1. Individual Loops, Total Survey and Underground Excavations 3 5. General Summary of Resuits (260) September 21,1998 (264) September 22, 1998 Table 1 below describes the ten leveling loops that were measured to obtain the elevations of the subsidence monuments. The table contains the start date of the observations, a loop number, and the points that are contained within the loop.

Table 1. Description of 1998 Leveling Loops W418, V 418, S 41, U 418, Y 418, A 419, C 419 4 U 418, S 18, S 17,5 43,5 20, S 42, 5 40, S 21, S 39, S 19, S 41, U 418 U 418, T 418, K 349, S 46, S 418. K 349, T 418. 5 (265) I U 418 (266) October 16, 1998 (289) September 24, 1998 (267) October 15, 1998 T 418, S 16, S 44, T 418 K 349, 5 24, S 23, S 22, PT 31, PT 30, S 09, S 45, S 10, PT 32, K 349 K 349, S 52, S 24, S 25, S 26, S 49, S 48, S 13, PT 33, $12, K 349 S 418, S 34, S 33, S 32, S 27, PT 21, S 22, S 28. 7 8 9 Table 2 summarizes the results of the leveling loops in terms of vertical closure and accuracy. The requirement for Second Order Class 11 loop closure accuracy was achieved in all cases. (288) September 29,1998 (272)

Table 2. Summa9 of Distance and Accuracy for 1998 Leveling Loops S 29, S 46, S 418 5 418, S 34, S 35, S 36, S 50, 5 31, S 47, S 30, 5418 10 Loop Cumulative Vertical Accuracy Allowable Distance (ft) Closure (ft.) Accuracy 4 5.1 Accuracy Surnrnav by Loop Table 3 shows a detailed summary of the observations in the leveling loops for the 1998 survey. The information in the table for each loop includes:

Between each benchmark in the loop:

The distance leveled between benchmarks along the loop.

0 The number of instrument setups between each of the benchmarks.

The difference in elevation from each benchmark to the next.

For each loop as a whole:

The accuracy of leveling.

The accuracy of the leveling is given in terms of feet times the square root of the length of the loop in miles. The actual accuracy of leveling is computed in the DlGlLEV software, and is based on the actual vertical closure of the loop. The maximum allowable accuracy is based on the allowable accuracy of a loop as stated in the FGCS interim specification for digital leveling. The FGCS specification for Second Order Class II loop closure permits a maximum of 8mmdKm (8mm times the square root of the length of the loop in Km). This converts to 0.033ft. dmile (0.033 feet times the square root of the length Gf t h e loop in miles) when stated in feet. All values indicated in this summary are expressed in feet.

Inspection of the following tables shows that in every case the actual accuracy is well below the maximum allowable accuracy for each loop, The column in each table that is labeled "Difference" is the vertical difference from one point to the next. It is important to note that the vertical difference figures have been rounded, and a slight difference may exist in the vertical closure figure from the algebraic sum of the column. The cumulative, or total, distance of each loop.

The vertical closure of the loop.

Allowable accuracy for each loop.

5 DOEMIPP 99 2 Table 3. Detailed loop Measurements kcuracv of Leveling: 0.002 I s 418 I K 349 I 2,087 I 14 I 2.457 12.745 9.364 4.003 0.002 1,187 D 419 S 51 2.744 S 51 S 38 3.61 1 24 0.632 A. . A ~ 5 38 1 11334 I 10 :umulative Distance: 9,533 DHfeF3, nCi 7.297 0.81 5 8.273 7.249 3.687 1.81C 3.730 4.359 6.81 5 1 1.170 0.088 Setups 6 2 6 8 10 8 6 4 6 10 14 lertical Closure: iccuracy of beveling: illowable Accumcv: 0 .m S ol s 03 180 595 0.044 s 53 1.238 0.000 I s 4 3 1 E 1 s 45 m IO 1,195 PT 1 0 S 14 1.193 S 14 S 15 1,000 S 15 T 418 444 Loop 3 Distance 1,418 955 532 41 5 1,225 596 579 61 1 404 244 2,395 2,164 2,371 13,910 A 41 9 setups 10 6 4 4 8 4 4 4 4 2 20 16 16 4.895 1 FX I 1 595 0.561 1,176 5.800 T 418 1,749 4.010 Cumulative Distance: 10,164 9.1 15 Vertical Closure: 6.694 Accuracy of Leveling: A419 Y 347 Y 347 2 41 8 2 418 Y 418 Y 418 X 418 X 418 ,W 418 V 418 s 41 U 418 Y 418 Y 418 A41 9 w 418 w i a s 41 u 41 a 0.130E 0.00: 0.04E table Accuracy: _. .

1 1y Loop 7 Distance 915 To S 24 S 23 s 22 PT 31 PT 30 S 09 s 45 s 10 PT 32 K 349 Distanec: 2.09f 8.142 2.677 7.71 E 1.231 0.14s 0. m 0.00: 17.083 S 24 0.002 PT 31 1,026 1,065 1,430 1,022 169 1.011 1.010 685 988 9,321 Cumulative Distance: Vertical Closure: Accuracy of Leveling:

Distance setups 4 8 6 6 6 4 10 14 6 2 a From W 1 8 51 8 S I 7 s 4 3 s 2 0 5 42 SA0 s 2 1 5 3 9 s 19 To s fa S I 7 S 43 5 2 0 s42 S 40 s 2 1 s 39 s 19 S 41 1,112 706 696 598 1,332 1,132 1,836 757 245 9,739 ala 10.533 6.1 02 6.191 7.505 3.810 1 1.983 4.752 4.622 5 41 U418 Cumulative Distance: Vertical Closure: 0.007 0.005 I Accuracy of Leveling:

Table 3 continued on next page.. (.

6 DOENYIPP 99 2293 Table 3. Detailed Loop Measurements (continued)

S 24 S 25 S 26 s 49 S 48 S 13 PT 33 s 12 K 349 Iistance: Vertical Closure:

To S 34 s 33 5 32 S 27 PT 21 s 22 S28 S 29 S 46 S 418 1,079 1,032 1,024 94 1 1,013 1,007 527 547 904 8,326 Setups 1 Difference 2 i 3.376 5.469 5.823 11.981 12.716 0.678 10.924 2.473 Accuracy of Leveling: 0.004 Allowable Accuracy: 0.041 LOOP 3 From Distance S 418 1,086 S 34 s 33 S 32 5 27 PT 21 s 2 2 S 28 S 29  _._

.

S 46 1,025 1,066 1,303 83 1,438 1,592 983 699 1,016 10.291 0.005 Cumulative distance: K c l o s u r e : Setups 8 8 8 10 1 10 11 7 5 7 Difference 9.648 1 3.039 5.575 13.796 3.361 3.864 5.587 6.722 0.184 1.840 0.002 0.002 =pc  Loop 10 3istance I Setup 1 Difference F 1.132 I 8 I 9.647 s 47 S 30 5 30 S 418 hmulative Distance: dertical Closure: 4ccuracy of Leveling: 4llowable Accuracy: 1,059 8.450 1,015 9.024 1,517 16.301 966 ~

'; 1 1 3.589 745 3.069 608 4 5.179 795 2.282 7,837 0.008 0.007 0.@ 40 7 I 6. Adjusted Level Loops Table 4 is a summary of the adjusted elevations for the ten loops measured in 1998. This has been extracted from the output of the DlGlLEV software.

Table 4. Adjusted Elewations by L O Q ~

,_, a I ;> 3: 1 3404.172 3416.916 U 418 3426.279 1 (2 419 I 3437.648 1 3395.887 3387.744 1 S 35 I 3400.516 8 DOEIWIPP 39 2293 7. Adjusted Elevations (1 998)

Table 5 shows the adjusted elevations for the subsidence monuments and the NGS points contained within the 1998 survey. These elevations are normalized to the monument, S 37. All elevations are shown in feet, and are within the WiPP local system.

Table 5. 1998 Adjusted Elevations 9 I 8. Comparison of Elevations Table 6 compares the elevations from all of the subsidence leveling surveys from I986 through 1998.

Table 6. Comparison of Etevations 19864998 Note: (1) The subsidence monument, S 02 was relocated in 1989. (2) The subsidence monument, S 02, no longer exists after the 1992 survey. (3) The subsidence monument, S I 1, no longer exists after the 1992 survey.

Table 6 continued on next page ...

10 DOENVlPP 99 2293 Table 6. Comparison of Elevations 1986 1998 (continued)

Note: (4) The subsidence monument, 5 54, no longer exists after the 1992 suwey. (5) The monument, PT 30, has been physically disturbed and was removed from the 1998 survey.

Table 6 continued on next page ...

11 I ?

12 Attachment D. 6 Other Reviewed Table 7 7. Preclosure and Postclosure Monitored Parameters Preclosure X / x l x i Monitored Parameter Culebra groundwater composition Culebra change in groundwater flow I .  ___  ~

4 L Probability of encountering a Castile brine reservoir v"

/ Qilling rate 4 d bbsidence measurements x i i A X F a t e activity ... . .. . . i Creep closure and stresses Li Extent of deformation 4 x Initiation of brittle deformation 4 x i t i t j X Displacement of deformation features !I/ X i EEMENTATION OF' WIPP LONG TERM MONITORING PROGRAMS J ~~~~~~~ n~~ Monitoring  The program that monitors this data is implemented by WP 09 ES. 01, Revision 0, WPP Underground & Suflace Su rveying Program, that was effective January 23, 1998. Subsidence measurements are taken at monitoring stations installed on the surfslce above the completed and planned WlPP underground excavations. Since 1992 regular subsidence measurements hwe been taken and they will continue to be conducted annually. 4  The program that monitors this data is implemented by WP 05 WAOZ, Revision 0, WPP Wmte r ~~~~t i o ~ System Program, that was effective on April 15, 1997. Since DOE has not begun disposal of waste yet, no actud data representing waste disposed of at WIPP has been entered into the computerized waste information system. However, =data have been put into the system and reports have been run to vernfy the system is functional. Information will be entered into the data system by the generator sites as they ship waste to W P for disposal.

ile Brine Reservoir  The program that monitors this data is implemented by WP 02 PC. 02, Revision 0, Delwm& ' Basin Drilrilzg Suweillmce Plan, that was effective on March 27, 1998. Information is gathered as records are filed with the appropriate agency and data is gathered from these records and put into a database. The database includes records of drilling activity (including borehole depth, diameter, and type), well conversion activities, occurrences of pressurized brine in the Castile formation, injection well operation, plugging and abandonment (including descriptions of plugging configurations), and identity of well ownership. Information gathering activities began in late 1995.

Culebra Ground Water Composition and Culebra Ground Water Flow  The program that monitors this data is implemented by WP 02 1, Revision 3 , Groundwater' that was effective on March 12, 1996. Sa groundwater composition and nd water flow. The current su 1996, however, an early program dates back to 1985.

Creep Closure and Stresses, Extent of Deformation, Initiation of Brittle Deformation. and Disulacement of Deformation Features  The program that monitors this data is implemented by WP 07 01, Revision 2, WPP Geotechnical Engineering v' Program Plan, that was effective on March 16, 1998. Data is collected by a network of instruments including tape and borehole extensometers, convergence meters, rockboit load cells, pressure cells, crack meters, strain gauges, and piezometers. Data is logged either remotely by data loggers, or manually. The measurement program began in 1983 and is conducted at least quarterly. A comprehensive report containing the results of the data analysis is published annually. Attachment D. 4 Drilling Related Documents Reviewed I Working Copy Effective Date: 3/ 27/ 97'

WP 02 PC. 02 Revision 0 Cognizant Section: Long Term Reauiatory Compliance Approved By: Sianature on File  R. J. Leonard Cognizant Department: Environment. Safety. and Wealth Approved By: sin Driliing Surveillance Plan WP 02 PC. 02. Rev . 0 TABLE OF CONTENTS ACRONYMS ......................................................... ii 1.0 INTRODUCTION ................................................. 9 2.0 PURPOSE ...................................................... 2 3.0 IMPLEMENTATION ............................................... 3 4.0 ACTIVITIES ..................................................... 3 4.1 Texas Portion of t h e Delaware Basin .............................. 3 4.2 New Mexico Portion of the Delaware Basin .......................... 3 4.3 Nine Township Area Information .................................. 4 4.4 General Database Maintenance .................................. 5 5.0 REPORTS ....... .................... ......................... 5 6.0 QUALITYASSURANCE ............................................ 5 REFERENCES ....................................................... 5 FlGBiRE 1 SURVEILLANCE AREAS WITHIN THE DELAWARE 8ASIN ......... 7 I 'Warking Copy Delaware Basin Drilling Surveillance Pian WP 02 PC. 02, Rev. 0 BLM CAO CCA CFR DOE EPA OCD QAPD WiPP Bureau of Land Management Carlsbad Area Office Compliance Certification Application Code of Federal Regulations U. S. Department of Energy Environmental Protection Agency State of New Mexico Oil Conservation Division Quality Assurance Program Description Waste Isolation Pilot Plant ii Working Copy Delaware Basin Drilling Surveillance Pian WP 02 PC. 02, Rev. 0 1 .O INTRODUCTION The Environmental Protection Agency (EPA) environmental standards for the management and disposal of transuranic radioactive waste are codified in Title 40, Code of Federal Regulations (CFR), Part 191 (EPA 1993). Subparts €3 and C of the standard address the disposal of radioactive waste. The standard requires that the Department of Energy (DOE) demonstrate through the use of a probabilistic risk assessment that the disposal system will function to contain radioactivity below specified release limits considering the effects of reasonably expected human initiated and natural processes and events. This includes the consideration of inadvertent drilling into the repository at some future time.

The EPA provided criteria in 40 CFR § 194.33 that addressed the consideration of future deep and shallow drilling in performance assessments. These criteria lead to the formulation of conceptual models that incorporate the effects of these activities. These conceptual models use parameter values drawn from the databases in Appendix DEL of the Compliance Certification Application (CCA).

In accordance with these criteria, the DQE used the historical rate of drilling for resources in the Delaware Basin to calculate a future drilling rate. In particular, in calculating the frequency of future deep drilling, 40 CFR § 194.33( b)( 3)( I)( EPA 1996) provided the following guidance to the DOE:

Identify deep drilling that has occurred for each resource in the Delaware Basin over the past 100 years prior to the time at which a compliance application is prepared.

The DOE used the historical record of deep drilling for resources below 2,150 feet (656 meters) that has occurred over the past 700 years in the Delaware Basin. In the past 100 years, deep drilling for oil, gas, potash, and sulfur exploration has occurred. All of these drilling events were used in calculating the rate of deep drilling within the controlled area (the 16 section Land Withdrawal Boundary) and throughout the basin in the future, as discussed in Appendix DEL of the CCA. Historical drilling for purposes other than resource exploration and recovery (such as WlPP site investigatio?) were excluded from the calculation in accordance with guidance provided in 40 CFR 3 194.33.

In calculating the frequency of future shallow drilling, 40 CFR § 194.33( b)( 4f( I) states that the DOE should:

Identify shallow drilling that has occurred for each resource in the Delaware Basin over the past 100 years prior to the time at which a compliance application is prepared.

1 I Working Copy Delaware Basin Drilling Suweillance Plan WP 02 PC. 02, Rev. 0 An additional criterion with respect to the calculation of Future shallow drilling rates is provided in 40 CFR 194.33( b)( 4)( iii):

In considering the historical rate of all shallow drilling, the Department may, if justified, consider only the historical rate of shallow drilling for resources of similar type and quality to those in the controlled area.

The only resources present at shallow depths (less than 2,150 feet 1655 meters) below the surface) within the controlled area are water and potash. Thus, consistent with 40 CFR § 194.33( b)( 4), the DOE used the historical record of shallow drilling associated with water and potash extraction in the Delaware Basin in calculating the rate of shallow drilling within the controlled area.

The EPA provides further criteria concerning the analysis of the consequence of future drilling events in performance assessments in 40 CFR 5 194.33( c)( EPA 1996). Consistent with these criteria, the following parameters regarding drilfing were also included in the performance assessment as documented in Appendix DEL of the CCA:

Types of drilling fluids Amounts of drilling fluids Borehole depths Borehole diameters E3orehole plugs Fraction of such boreholes that are sealed by humans Natural processes that will degrade plugs Instances of encountering pressurized brine in the Castile Formation The DOE will continue to provide surveillance of the drilling activity in the Delaware Basin in accordance with the criteria established in 40 CFR 5 194 during the operational phase and will continue until the DOE and EPA agree that no further benefit can be gained from continued surveillance. The results of this surveillance activity will be used in performance assessment calculations performed in support of recertification.

2.0 PURPOS The purpose of the Delaware Basin Drilling Surveillance Plan is to provide for active surveillance of drilling activities within the Delaware Basin (see Figure I), with specific emphasis on the nine township area that includes the Waste Isolation Pilot Plant (WIPP) site (Figure I). The surveillance of drilling activities will build on the data presented in Appendix DEL and comply with the activities presented in Appendix DMP of the CCA, which were used to develop modeling assumptions for performance assessment. The collection of additional information on drilling patterns and practices in the Delaware Basin will be used to define whether the drilling scenarios in the application continue to b e valid ai ,ach five year recertification time for the WIPP.

2 working copy Delaware Basin Drilling Surveillance Plan WP 02 PC. 02, Rev. 0 Surveillance of drilling activities within the Delaware Basin will be implemented no later than the beginning of the operational phase. This activity will continue until 100 years after closure or until the DOE can demons'. .de to the EPA that there are no significant concerns to be addressed by further surveillance, as discussed in Chapter 7, Section 7.1.4, Effectiveness of the Active Institutional Controls Program, of the CCA, DOE/ CAO 1996 2184, October 1996. Beginning no later than the initiation of the operational phase and continuing through post closure, driliing activities within the Delaware Basin will be tracked using commercially available databases. Drilling activities related to hydrocarbon resources, potash boreholes, and water welts that occur within the nine township area, will be more rigorously monitored using the commercial databases and the drilling records maintained by both state and federal organ iza t io n s .