**Brookhaven National Laboratory**

**g-2 Facility Groundwater Investigation -- Phase I**

# November 1999 (12-14-99 \@10:00)

+---------------+-----------------+-----------------+-----------------+
| **Geoprobe    | ## Sam          | **Tritium       | **Na-22         |
| Well**        | ple Depth (BLS) | (pCi/L)**       | (pCi/L)**       |
+---------------+-----------------+-----------------+-----------------+
| 054-106       | 43'-47'         | 451+/-202       | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 35'-39'         | \<306           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 31'-35'         | 394+/-199       | 2.2+/-1.2       |
+---------------+-----------------+-----------------+-----------------+
|               | 29'-33'         | \<360           | 3.0+/-1.5       |
+---------------+-----------------+-----------------+-----------------+
| 054-107       | 43'-47'         | \<360           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 35'-39'         | \<360           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 31'-35'         | \<360           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 27'-31'         | 463+/-219       | 2.3+/-1.2       |
+---------------+-----------------+-----------------+-----------------+
| 054-108       | 43'-47'         | \<306           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 35'-39'         | \<360           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 31'-35'         | 1,760+/-298     | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 27'-31'         | 612+/-247       | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 27'-31'         | 756+/-255       | ND              |
|               | (duplicate)     |                 |                 |
+---------------+-----------------+-----------------+-----------------+
| 054-109       | 43'-47'         | \<355           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 35'-39'         | \<355           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 31'-35'         | \<355           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 27'-31'         | 362+/-220       | 2.1+/-1.2       |
+---------------+-----------------+-----------------+-----------------+
|               | 27'-31'         | 471+/-224       | ND              |
|               | (duplicate)     |                 |                 |
+---------------+-----------------+-----------------+-----------------+
| 054-110       | 43'-47'         | \<332           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 35'-39'         | \<332           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 31'-35'         | 369+/-204       | 35.4+/-4.9      |
+---------------+-----------------+-----------------+-----------------+
|               | 27'-31'         | NS              | NS              |
+---------------+-----------------+-----------------+-----------------+
| 054-111       | 45'-49'         | 15,500+/-600    | ND              |
|               |                 |                 |                 |
|               |                 | R= 19,300+/-724 |                 |
+---------------+-----------------+-----------------+-----------------+
|               | 37'-41'         | 7,410+/-434     | ND              |
|               |                 |                 |                 |
|               |                 | R= 8,830+/-516  |                 |
+---------------+-----------------+-----------------+-----------------+
|               | 37'-41'         | 5,130+/-382     | ND              |
|               | (duplicate)     |                 |                 |
|               |                 | R= 5,020+/-414  |                 |
+---------------+-----------------+-----------------+-----------------+
|               | 33'-37'         | 1,2             | 38.3+/-4.9      |
|               |                 | 70,000+/-25,600 |                 |
|               |                 |                 |                 |
|               |                 | R=              |                 |
|               |                 | 1,5             |                 |
|               |                 | 50,000+/-31,000 |                 |
+---------------+-----------------+-----------------+-----------------+
|               | 29'-33'         | 79,700+/-1,620  | 3.9+/-1.4       |
|               |                 |                 |                 |
|               |                 | R=              |                 |
|               |                 | 97,400+/-1,990  |                 |
+---------------+-----------------+-----------------+-----------------+
| 054-112       | 43'-47'         | \<339           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 35'-39'         | 436+/-211       | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 31'-35'         | 579+/-226       | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 27'-31'         | 751+/-230       | ND              |
+---------------+-----------------+-----------------+-----------------+
| 054-113       | 39'-43'         | \<339           | ND              |
| (Upgradient)  |                 |                 |                 |
+---------------+-----------------+-----------------+-----------------+
|               | 31'-35'         | \<339           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 27'-31'         | \<339           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 24'-28'         | \<369           | ND              |
+---------------+-----------------+-----------------+-----------------+
| 054-114       | 38'-42'         | \<369           | ND              |
| (Upgradient)  |                 |                 |                 |
+---------------+-----------------+-----------------+-----------------+
|               | 34'-38'         | \<369           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 30'-34'         | \<369           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 26'-30'         | \<369           | ND              |
+---------------+-----------------+-----------------+-----------------+
| 054-115       | 41'-45'         | \<369           | ND              |
| (Upgradient)  |                 |                 |                 |
+---------------+-----------------+-----------------+-----------------+
|               | 33'-37'         | \<369           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 29'-33'         | \<369           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 25'-29'         | \<369           | ND              |
+---------------+-----------------+-----------------+-----------------+
| 054-116       | 43'-47'         | 722+/-213       | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 35'-39'         | 813+/-228       | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 31'-35'         | 6               | 10.8+/-2.0      |
|               |                 | 06,000+/-12,200 |                 |
+---------------+-----------------+-----------------+-----------------+
|               | 27'-31'         | 1,7             | 60.3+/-7.0      |
|               |                 | 90,000+/-35,800 |                 |
+---------------+-----------------+-----------------+-----------------+

ND = Not Detected R = Reanalysis NS = Not sampled BLS = Below Land
Surface

Note: "\<" symbols preceding a value (e.g., \<304) indicates that the
measured tritium value was less than the stated Minimum Detection Limit.

**Brookhaven National Laboratory**

**g-2 Groundwater Investigation -- Phase II**

# December 1999 (12-14-99 \@10:00)

+---------------+-----------------+-----------------+-----------------+
| **Geoprobe    | ## Sam          | **Tritium       | **Na-22         |
| Well**        | ple Depth (BLS) | (pCi/L)**       | (pCi/L)**       |
+---------------+-----------------+-----------------+-----------------+
| 054-111       | 49'-53'         | 27,200+/-763    | NA              |
| (Re-          |                 |                 |                 |
| installation) |                 |                 |                 |
+---------------+-----------------+-----------------+-----------------+
|               | 45'-49'         | 15,900+/-594    | NA              |
+---------------+-----------------+-----------------+-----------------+
|               | 41'-45'         | 13,600+/-555    | NA              |
+---------------+-----------------+-----------------+-----------------+
|               | 37'-41'         | 88,900+/-1,800  | 2.9+/-1.5       |
+---------------+-----------------+-----------------+-----------------+
|               | 33'-37'         | 1,4             | 52.7+/-6.3      |
|               |                 | 90,000+/-30,000 |                 |
+---------------+-----------------+-----------------+-----------------+
|               | 29'-33'         | 24,500+/-740    | 2.4+/-1.1       |
+---------------+-----------------+-----------------+-----------------+
| 54-117        | 39'-43'         | \<329           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 31'-35'         | 21,500+/-682    | 54.4+/-6.6      |
+---------------+-----------------+-----------------+-----------------+
|               | 27'-31'         | 5,370+/-378     | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 23'-27'         | 435+/-209       | 1.7+/-1.2       |
+---------------+-----------------+-----------------+-----------------+
| 54-118        | 39'-43'         | 455+/-246       | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 31'-35'         | \<393           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 27'-31'         | 9,210+/-515     | 2.4+/-1.2       |
+---------------+-----------------+-----------------+-----------------+
|               | 23'-27'         | 4,240+/-398     | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 23'-27'         | 4,310+/-391     | ND              |
|               | (duplicate)     |                 |                 |
+---------------+-----------------+-----------------+-----------------+
| 54-119        | 39'-43'         | \<393           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 31'-35'         | 4,150+/-383     | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 27'-31'         | 27,100+/-822    | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 27'-31'         | 26,500+/-811    | ND              |
|               | (duplicate)     |                 |                 |
+---------------+-----------------+-----------------+-----------------+
|               | 23'-27'         | 3,710+/-361     | ND              |
+---------------+-----------------+-----------------+-----------------+
| 54-120        | 39'-43'         | 394+/-207       | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 31'-35'         | 5,850+/-398     | 2.1+/-1.2       |
+---------------+-----------------+-----------------+-----------------+
|               | 27'-31'         | 2,980+/-311     | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 23'-27'         | \<329           | ND              |
+---------------+-----------------+-----------------+-----------------+
| 54-121        | 39'-43'         | 323+/-200       | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 31'-35'         | \<319           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 27'-31'         | 858+/-226       | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 23'-27'         | 557+/-210       | ND              |
+---------------+-----------------+-----------------+-----------------+
| 54-122        | 49'-53'         | \<304           | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 45'-49'         | 326+/-182       | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 41'-45'         | 394+/-189       | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 37'-41'         | 651+/-201       | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 33'-37'         | 820+/-213       | ND              |
+---------------+-----------------+-----------------+-----------------+
|               | 29'-33'         | 4,860+/-353     | 1.5+/-0.9       |
+---------------+-----------------+-----------------+-----------------+
| 54-123        | 41'-45'         | \<298           | NA              |
+---------------+-----------------+-----------------+-----------------+
|               | 37'-41'         | 1,630+/-273     | NA              |
+---------------+-----------------+-----------------+-----------------+
|               | 33'-37'         | 2,350+/-302     | NA              |
+---------------+-----------------+-----------------+-----------------+
|               | 29'-33'         | 6,690+/-433     | NA              |
+---------------+-----------------+-----------------+-----------------+
|               | 25'-29'         | 1,190+/-251     | NA              |
+---------------+-----------------+-----------------+-----------------+
|               | 21'-25'         | \<298           | NA              |
+---------------+-----------------+-----------------+-----------------+
|               |                 |                 |                 |
+---------------+-----------------+-----------------+-----------------+
|               |                 |                 |                 |
+---------------+-----------------+-----------------+-----------------+

ND = Not Detected.

NA = Not analyzed for this radionuclide.

BLS = Below Land Surface.

\*\* = Data expected to be available during the week of December 13,
1999.

Note: A "\<" symbol preceding a value (e.g., \<304) indicates that the
measured tritium value was less than the stated Minimum Detection Limit.