a a -- r-.. ' ..-- ngi!

r

---· A - -� r- '

A"� .. �NGI!'

... -·· ·------------------- - ·----------.

.. ... ..--

2. ECN Category (mark one) Supplemental � Direct Revision Change ECN Temporary Supersedure Discovery CancelN01d

□ □ □ □ □ □

:t .,_.., ... . CHANGE NOTICE of __

3. Originator's Name. --.)rganizat1on, MSIN, and Telephone No.

R. B. Mercer, Geosciences Group/H4-56/6-8945 5. ProIect Title/No./Work Order No. 6. Bldg./Sys./Fac. No_

LLBG

8. Document Number Affected (include rev. and sheet{; 9. Related ECN No(s). no>

WHC-SD-EN-AP-015, Rev. 0 1_,,\.0 N/A

1 ECN 1 � 2 8 0 5 ProJ. ECN

4. Date

7. Impact Level 2

10. Related PO No.

N/A

11 a. Modification Work 11 b. Work Package 11 c. Complete Installation Work 1 ld_ Complete Restoration (Temp. ECN only) 0 Yes (fill out Blk. 11 bl Doc. No. 0 No (NA Blks. 11b, N/A 11c, 11d)

12. Description of Change

N/A N/A Cog. Engineer Signature & Date Cog. Engineer Signature & Date

Figures 3.1 through 3.5 {pages 146, 149, 151, 154, and 156 respectively) will be replaced by Figures 1 through 5 attached to this ECN. Locations for thirty-two additional groundwater monitoring wells are shown on these figures. The figures also show the Hanford well numbers for the sixteen newly installed wells described in the original document.

Table 3.2 (page 159) will be supplemented by Tables 1 through 5 of this ECN. These tables present the approximate coordinates, drill depths, and screen lengths for the additional wells. These coordinates are estimates and minor adjustments may be necessary to accommodate cultural features.

13a. Justification (mark one) 13b_ Justification Details Criteria Change 0

Design Improvement )CJ Environmental 0 As-Found D Facilitate Const. 0

Const. Error/Omission 0

Design Error/Omission D

See attachment.

14. Distribution (include name, MSIN, and no. of copies) RELEASE STAMP

A-7900-013 ( 11 /B8)

/j

-

..-------- ·-·------=======-___:_:- ==:;---

I i. ECN (use no. /,om pg. 1) ENGJNEERING CHANG',.. f' OTICE Page i. of __

113805

15. Design Verification 16. Cost Impact 17 Schedule lmoact (days)

18.

Required ENGINEERING

0 Yes Additional □ s

ONo Savings □ �

CONSTRUCTION

Additional O S ______ _

Savings □ s _____ _

Improvement O ___ _

Delay □--

Change Impact Review: Indicate the related documents (other than the engineering docume'lts 1dentd1ed on Side 1) that will be affected by the change described in Block 12. Enter the affected document number in Block 19.

SOD/DD □ Se1sm1c/Stress Analysis □ Tank Calibration Manual □ Functional Design Criteria □ Stress1Des1g:i Report □ Health Physics Procedure □ Operating Specification □ Interface Control Drawing □ Spares Multiple Unit Listing □ Criticality Specification □ Calibration Procedure □ Test Procedures/Spec1f1cat1on □ Conceptual Design Report □ Installation Procedure □ Component Index □ Equipment Spec. □ Maintenance Procedure □ A.SME Coded Item □ Const. Spec. □ Engineering Procedure □ Human Factor Consideration □ Procurement Spec. □ Operating Instruction □ Computer Software □ Vendor Information □ Operating Procedure □ Electric Circuit Schedule □ OM Manual □ Operational Safety Requirement □ ICRS Procedure □ FSAR/SAR □ IEFD Drawing □ Process Control Manual/Plan □ Safety Equipment List □ Cell Arrangement Drawing □ Process Flow Chart □ Radiation Work Permit □ Essential Material Spec1ficat1on □ Purchase Requ1S1t1on □ Environmental Impact Statement □ Fae. Proc. Samp. Schedule □ □ Environmental Report □ Inspection Plan □ □ Environmental Permit □ Inventory Adjustment Request □ □

19. Other Affected Documents: (NOTE: Documents listed below will not be revised by this ECN.) Signatures below 1nd1cate that the signing organization has been notified of other affected documents listed below.

Document Number/Revision Document Number/Revision Document Number/Rev,s1on N/A

20. Approvals Signature Date

OPERATIONS AND ENGINEERING �

� � . L,_

Cog./P,.oJect"E .. gineer P./J.WI//JA/n °i/ r / "?/

Cog./Project Engr. Mgr. {!,.I, Ji., <r f) �a, '11) ,).. /t /-, I QA -e.1,,u . 12 o,..,,, k+- :J. � 4 - q I

Safety ]?.,J". Al0<andtr, IJj� J-(p-9/

Security _______________ _

Proj.Prog./Dept. Mgr. __________ _

Def. React. Div. ____________ _

Chem. Proc. Div. ____________ _

Def. Wst. Mgmt. Div. ___________ ____ _

Adv.React.Dev. Div. ___________ ____ _

Proj. Dept. ____________________ _

Environ.Div. ______________ ____ _

IRM Dept. ____________________ _

Facility Rep. (Ops) ____________ ____ _

Other ____________________ _

Signature ARCHITECT-ENGINEER

PE ------------------

Date

QA _________________ ------

Safety ____________________ _

Design ________________ ____ _

Other ____________________ _

DEPARTMENT OF ENERGY

ADDITIONAL

A-7900-01 JR (11/88)

Attachment to ECN 113805

13b. Justification Details

A Part B permit application for the Hanford Site 200 Areas Low-Level Burial Grounds (LLBG) (DOE-RL-88-20) has been submitted to Ecology. This application contains locations and construction details for twenty-eight additional groundwater monitoring wells not specified in the groundwater monitoring plan for the LLBG (WHC-SD-EN-AP-015, Rev. 0). Four additional well locations and revised locations for some wells have been identified in response to comments on the permit application. All thirty-two well locations will be documented in the next revision of the permit application. These monitoring wells are necessary to bring the LLBG monitoring plan into agreement with the permit application for final status for the groundwater monitoring requirements of WAC 173-303-645.

Table 1. Low-Level Waste Management Area 1 Proposed Groundwater Monitoring Wells

Interim Hanford Estimated Screen

Well Number Coordinates Depth Length (ft) (ft)

El0-MW3 N 46069

270 15 W 56725

El0-MW4 N 46506

255 10 W 56725

El0-MW5 N 46795

243 10 W 56475

El0-MW6 N 46795

242 10 W 56037

El0-MW9 N 46795

236 10 W 55550




El2-MW1 N 46620

209 10 W 51480

El2-MW2 N 46195

219 10 W 51480

El2-MW3 N 45770

233 15 W 51480

El2-MW4 N 45345

241 15 W 51480

'

E12-MW5 N 45095

249 20 W 51200

El2-MW6 N 44935

248 20 W 50800

E12-MW7 N 44760

244 20 W 50360




W5-MW2 N 46510

241 20 W 78245

W3-MW1 N 46510

234 20 W 77770

l.!) Table 4. Low-Level Waste Management Area 4

Proposed Groundwater Monitoring Wells



-

W4-MW6 N 38610

235 20 W 78100

W4-MW7 N 38210

223 20 W 78100

-

W4-MW8 N 37950

218 20 W 76545

W4-MW9 N 39230

245 20 W 78100




W6-MW1 N 45584

249 20 W 75010

W6-MW2 N 45385

452 20 W 74725

W6-MW3 N 45350

255 20 W 74685

W6-MW4 N 45150

262 20 N 74400

W6-MW5 N 45970

269 20 W 73670

W6�MW6 N 46510

270 20 W 73480

W6-MW7 N 46510

265 20 W 73800

W6-MW8 N 46510

486 20 W 74052

W6-MW9 N 46510

261 20 W 74077

W6-MW10 N 46510

261 20 W 74367

W6-MW11 N 46510

253 20 W 74682

W6-MW12 N 46510

248 20 W 75000

W6-MW13 N 46510

246 20 W 75312

W6-MW14 N 46510

245 20 W 75627

.,

-

W57000 WSSOOO

� -�- _E10-MW-5_ E10-MW, ____ _

z t=====m;;;;;te=�==Q:;;==0:=;;;'if"====l

c=i

�-/

E10-MW6 299-E33-34

299-E33-30

218-E-10 Burial Ground

299-E33-35

�16-B-62 Crib

Waste Management Area 1 Boundary 0 Pre-1987 Well C 1990Well

Inactive Facilities e 1987Well A Planned Well

Railroad Tracks ■ 1989Well

200 East Area Boundary 0 500 1000feet

I I I I I

Figure 1. Well Locations for Waste Management Area 1

W51000 W49000

218-E-12B

Burial Ground

299-E33-33

% E12-MW4

299-E 36 � ..., □ E12-MW5 It' �9-E34-1

□ ll299-E34-8

�

EJ4-2 299-E33-37�

299-E27-16:i::tE12-MW6 E12-MW7

299-E27-11

A -�-

CJ Waste M anagement Area 2 Boundary 0 Pre-1987 Wen

� Inactive Facilities • 1987Wefl

[•: ...... :_-J Adive Facilities ■ 1989Weff

/ 200 East Area Boundary

0 Basalt Above Waler Table 0 500

I I I I

O 299-E26-1

□ 1990 Weff for other RCRA Facil�ies

A Planned Well

1000 feet I '


.__ __________ -- - -- --

W47000

l299-E35-1

I I I I

I

I I I

I __

v z

Wi9000 W77000

A -N-

o 299-Wl-9 299-Wl-3 299-W7-7 ________ WS-MW2 ________ _

299-W8-1 299-W7-1 W3-MW1 29 -W7-2 299-W?-5 299-W7-6 299-W?-8

c::J

WZ3 t-.::-,.-:•,I

�-.,..,,,,..

218-W-5 Burial Ground

216-W-3A Burial Ground

Waste Management Area 3 Boundary •

Inactive Facilities ♦

Active Facilities ■

Railroad Tracks

200 West Area Boundary

1987 Well

218-W-3A-E Burial Ground

a 1990Wen

1987 Deep Well 1l. Planned Wen

1989Well

0 500 1000 feet '

• I I I I I I


W75000

0

W79000

8

0

g-M

z

A -�-

299-W15-24

299-W18-26 W4-MW9

299-W18-23

W4-MW6

0 299-W18-3

W77000

W4-MW7 218-W-4C

Burial Ground W4- MWB

I�. 299-W18·221 �=========��==�§€:§�

I 299-W18- 21

�-

I I

c::l Waste M anagement Area 4 Boundary

� Inactive Facil ities

1.-•.. .-.•.:) Active Facilities

� Railroad Tracks

- _,,. 200 West Area Boundary

O Pre-1987 Wen e 1987Well

♦ 1987 Deep well

■ 1989Well

0 I , I I

□ 1990Well

J::t.. Planned Well

1000feet ' I


!

CJ

c::J

� -

-

W75000

I

Waste Management Area 5 Boundary

lnadive Facilities

Adive Facilities

Railroad Tracks

200 West Area Boundary

W73000

0299-WS-1

0 Pre-1987 Well C 1990 Well

e 1987Well A Planned Well

■ 1989Well V Planned Deep Well

0 500 1000 feet I I I I I
