hwbdocuments.env.nm.gov Alamos National Labs/TA 21...Los Alamos NATIONAL LABORATORY Hazardous &...

Los Alamos NATIONAL LABORATORY

Hazardous & Solid Waste Group Los Alamos National Laboratory

Los Alamos, New Mexico 87545

Mr. Anthony Moreland, Geologist Remedial Action Section Underground Storage Tank Bureau New Mexico Environment Department 1190 St. Francis Drive Harold Runnels Building Santa Fe, New Mexico 87502

Dear Mr. Moreland:

Date: July 11, 1995 ln Reply Refer To: ESH-19/HSW-95-0329

Mad Stop: K~98

Telephone: (505) 665-2505

SUBJECT: FORTY-FIVE-DAY REPORT ON SOIL CONTAMINATION AT THE FORMER TA-21 UNDERGROUND STORAGE TANK FARM

This letter transmits a forty-five-day investigation repgrt involving petroleum contaminated soil. The soil contamination associated with the release is from two petroleum fill stations associated with a former underground storage tank farm (also called the DP Tank Farm) located at Technical Area 2l. On April27, 1995, Los Alamos National Laboratory (LANL) notified the New Mexico Environment Department, Underground Storage Tank Bureau of a confirmed petroleum release.

The enclosed forty-five-day investigation report and its associated enclosures will show that LANL has determined the extent of the petroleum contamination at the former DP Tank Farm site. The report also shows the source of the petroleum contamination in the "seep" in DP Canyon Creek is not from the former DP Tank Farm.

Lastly, the forty-five-day report only contains preliminary analytical data. Validated data should be available by July 21, 1995. As soon as this data is available it will be transmitted to NMED. Also, the preliminary data includes several samples that were reported to have contained methyl ethyl ketone (MEK) and acetone. It is believed that the presence of MEK and acetone are from laboratory contamination. LANL will discuss the presence of the MEK and acetone in our letter transmitting the validated data If you should require any additional information, please contact me at 665-2505.

The foregoing report was prepared under my supervision by qualified staffwho are personally familiar with the information submitted in the report and the enclosed documents.

1111111111111111111111 111111111 1111 10197

Sincerely,

~michael Technical Staff Member Hazardous & Solid Waste

Anthony Moreland ESH-!9:95-0329

-2-

JAC:es

Enclosure: Former T A-21 UST Tank Fann Forty-Five-Day Report

Cy: T. Grieggs, ESH-19, MS K498, wo/enc. P. Shanley, ESH-19, MS K498, wo/enc. S. Cohen, ESH-19, MS K498, wo/enc. D. Mcinroy, EMlER, MS M992, w/enc. B. Martin, CIC-12, MS E525, w/enc. J. Vozella, DOEILAAO, MS A316, wo/enc. M. Johansen, DOEILAAO, MS A316, w/enc. B. Koch, DOEILAAO, MS A316, w/enc. T. Taylor, DOEILAAO, MS A316, w/enc. CIC-10, MS A 150 ESH-19 Circ. File

July II, 1995


Hazardous & Solid Waste Group Los Alamos National Laborato_ry Los Alamos, New Mexico 87545

UNDERGROUND STORAGE TANK

FORMER T A-21 UNDERGROUND STORAGE TANK FARM

FORTY-FIVE DAY REPORT

The purpose of this letter is to fulfill the forty-five day reporting requirements of Part Xll, Section 1206 B., of the New Mexico Underground Storage Tank Regulations (US'IR). Under this regulation, the forty-five day report was due on June 12, 1995. However, an extension of time was granted by New Mexico Environmental Department (NMED) to submit the report. The report is now due on July 11, 1995.

On April27, 1995, Los Alamos National Laboratory (LANL) notified the NMED, Underground Storage Tank Bureau of a confirmed petroleum release. The release is from two petroleum till stations associated with a former underground storage tank (UST) farm (also called the DP Tank Farm) located at Technical Area 21.

Site History and Petroleum Release Information

The former DP Tank Farm site is located on DP Mesa, east-southeast of the Los Alamos townsite (Enclosure 1). The site occupies property near the west end of DP Road bounded by the Knights of Columbus Hall on the west and a Los Alamos County fire station on the east The DP Tank Farm is the former location of 15 fuel storage tanks and two fill stations (Enclosure 2). The tanks may not have been dedicated to the storage of a single petroleum product and may have contained different substances at different times. One tank was reported to have contained ethanol. There are no known records of any radioactive materials being stored in any of the tanks.

All tanks and structures at the site were decommissioned and removed in 1988. During site decommissioning, one tank was found to have leaked from a deteriorated gasket. Approximately 4 cubic yards of diesel-contaminated soil was excavated to remediate the area in the vicinity of the leaking gasket The remaining tanks and underground distribution piping were reported to have been in good condition when removed.

In February 1993, the site was designated a Solid Waste Management Unit (SWMU) 21-029 and added to LANL's Hazardous Waste Pennit pursuant to Resource Conservation and Recovery Act (RCRA) and amended by the Hazardous and Solid Waste Amendments of 1984 (HSWA Permit). In 1994, LANL's Environmental Restoration (ER) Project performed a Phase I investigation of the site to confirm the absence or presence of contaminants as specified in the HSW A Permit.

UST Report -2-

The results of the investigation indicated that petroleum hydrocarbons, in the form of total aromatic hydrocarbons (benzene, toluene, ethylbenzene, and xylenes isomers [BTEX]), other volatile constituents of gasoline and diesel fuel, and semi-volatile organic compounds (SVOCs), and lead were not present in concentrations above LANL Screening Action Levels (SALs) or the USTR contaminant action levels in the immediate vicinity of the former USTs. However, concentrations of total aromatic hydrocarbons (TAHs) were detected above the USTR action levels in the subsurface surrounding the two former fill stations. The two former fill stations are distinguished as the west fill station and the east fill station.

In 1995, ERM/Golder a subcontractor to LANL continued the investigation at the former DP Tank Farm fill stations. The field work was conducted to determine the vertical and lateral extent of petroleum hydrocarbon contamination.

On-site Investigation and Analytical Data

A total of 13 boreholes were drilled near the two rill station locations, including four vertical borings and one angled boring at the west fill station location and seven vertical borings and one angled at the east fill station location (Enclosure 3). All borings were drilled with aCME 750 drill rig equipped with 8.625-inch (outside diameter) hollow stem auger flights. Samples of subsurface materials were collected on a continuous basis with a 3.5-inch diameter, 5-foot long stainless steel core barrel. Samples submitted for laboratory analysis were collected on approximate 5-foot intervals. A brief summary of each borehole is provided in the following sections.

All samples were analyzed in the on-site Mobile Chemical Analytical Laboratory (MCAL) for benzene, toluene, ethylbenzene, xylenes (BTEX), methyl ethyl ketone (MEK or 2-butanone), and acetone by EPA Method 8020 and total petroleum hydrocarbons (TPH) by modified EPA Method 8015. This report only contains preliminary data received from the MCAL. The preliminary data is provided in (Enclosure 4).

Validated data should be available by July 21, 1995. LANL expect no significant changes in the data presented in this report or in its conclusions. The preliminary data also included Several samples that were reported to have contained MEK and acetone. It is believed that the presence of MEK and acetone are from laboratory contamination. LANL will disC'Uss the presence of MEK and acetone in its letter transmitting the validated data.

Because a hydrocarbon sheen was observed on the surface of the water in DP Canyon Creek, four surface water samples and seven streambed samples (including duplicates) were collected from the intermittent stream. It appeared that the hydrocarbons entered the stream channel through the "seep." Surface water and streambed samples were collected at the "seep" location as well as upstream and downstream of the "seep." Furthermore, three shallow borings were drilled in the vicinity of a "seep." These borings were drilled with a Bosch "Rotohammer" equipped with 3-foot, 2.5-inch diameter solid stem auger flights. The total depth drilled for each boring was 9 feet below ground surface (bgs). Samples were collected by scooping the pulverized tuff fragments directly off of the auger flights. Several attempts were made to collect samples with a drive sampler and a bucket auger, but the hardness and integrity of the tuff bedrock prevented the successful collection of the samples.

UST Report -3-

Soil Borings

The following summary includes data from soil samples collected from boreholes drilled in the vicinity of two former fill station locations, data from the streambed, and data from the surface water samples. A brief description of the soils and lithology is included with the borehole descriptions and copies of Core Sample Logs are located in (Enclosure 5). A general summary of the soils and geology of LANL and the site are provided in (Enclosure 6).

West Fill Station

Boring 21-3002 was drilled and sampled approximately 23 feet north of the former west fill station location. The vertical boring was drilled to a total depth of 35 feet bgs. Approximately one foot of fill, consisting of fine sand, silt and clay overlay the tuff bedrock at this location. The remainder of the boring was drilled through nonwelded to moderately welded grey tuff. Low- to moderate-angle fractures were rare. Total BTEX concentrations ranged from below detection levels to 0.89 parts per million (ppm). TPH concentrations were found to be below detection limits throughout the boring. MEK concentrations ranged from below detection limits to 6.43 ppm (at 23 feet bgs).

Boring 21-3003 was located approximately 15 feet east and slightly north of the former west fill station location. The boring was drilled at a 45-degree angle in an east-to-west orientation. Approximately 1.7 feet (corrected for angle) of fill material consisting of fine sand, silt and gravel overlay the tuff bedrock in this location. The remainder of the boring was drilled through non welded to moderately: welded tuff to a total linear depth of 45 feet, or 32 feet vertical feet bgs. A large proportion of the recovered sample material was completely disaggreg~ted, making the observation of fractures impossible. Concentrations of BTEX compounds were below detection limits throughout the boring. TPH concentrations of greater than 600 ppm and greater than 670 ppm were encountered at sample depths of 14.3 and 19.21inear feet (10.1 and 13.6 feet bgs, respectively).

Boring 21-3004 was located approximately 20 feet south of the former west fill station location. The vertical boring was drilled to a total depth of 45 feet bgs. This borehole was drilled 10 additional feet bgs (compared to 21-3002 and 21-3003) to compensate for the higher elevation of the site relative to the fill station location. Approximately 7.5 feet of fill, consisting of fme sand, silt and clay, was encountered. The remainder of the boring was drilled through nonwelded to moderately welded grey tuff. Horizontal fractures and partings were common throughout the boring. Total BTEX and TPH concentrations were below detection levels throughout the boring.

Boring 21-3005 was located approximately 20 feet west of the former west fill station location. The vertical boring was drilled to a total depth of 35 feet bgs. Approximately 1.0 to 2.5 feet of fill consisting of silty sand and gravel overlay the tuff bedrock at this location. The remainder of the boring was drilled through nonwelded to moderately welded grey tuff. Low-angle fracturing was noted in the upper 10 feet High-angle, claylined fractures were noted near 31 feet bgs. Total BTEX concentrations ranged from 0.72 to 0.97 ppm. TPH concentrations were not detected above MCAL detection levels. MEK concentrations ranged from 2.78 to 7.72 ppm with the maximum concentration at 4.3 feet bgs.

Boring 21-3014 was located approximately 20 feet east of the former west fill station site. The vertical boring was drilled to a total depth of 35 feet below ground surface. Approximately 2.0 feet of fill consisting of fine sand and silt overlay the tuff bedrock at

UST Report -4-

this location. The remainder of the boring was drilled through nonwelded. to moderately welded grey tuff. Zones of fracturing were noted at 14.0 to 15.0 feet bgs and at 26.0 to 26.5 feet bgs. Total BTEX and TPH concentrations were below detection levels throughout the boring.

East Fill Station

Boring 21-3006 was drilled adjacent to the east fill station location and boring 21-2558 (drilled and sampled in September 1994). The vertical boring was drilled to a total depth of 65 feet bgs. Approximately 4.5 feet of fill consisting of silt, fme sand and gravel overlay the tuff bedrock at this location. The remainder of the boring was drilled in non welded to moderately welded tuff. Numerous horizontal to low-angle fractures were noted throughout the boring. Petroleum odors were noted during the initial 45 feet of drilling. Total BTEX concentrations ranged from below the detection limit upwards to 674.3 ppm. Benzene concentrations ranged from below the detection limit upwards to 18.4 ppm. TPH concentrations ranged from below the detection limit to greater than 1800 ppm. The maximum concentrations of each of these analytes were found at 9.8 feet bgs.

Boring 21-3007 was located approximately 20 feet north-northeast of the former east fill station. The vertical boring was drilled to a total depth of 50 feet bgs. Approximately 3.5 feet of fill consisting of silt, fme sand and gravel overlay the tuff bedrock at this location. The remainder of the boring was drilled in nonwelded to moderately welded tuff. No prominent fractures were noted throughout the boring. Total BTEX and TPH concentrations were below detection levels through~ut the boring.

Boring 21-3008 was located approximately 15 feet east and slightly north of the former east fill station location. The boring was drilled at a 45-degree angle in an east-to-west orientation. The angled boring was advanced to a total linear depth of 50 feet, or 35 vertical feet bgs. Approximately 4.7 vertical feet of fill consisting of sand, silt and tuff fragments overlay the tuff bedrock in this location. The remainder of the boring was drilled in nonwelded to moderately welded tuff. Numerous horizontal fractures were noted between 30 and 32.5 linear feet The recovered core was highly fractured by lowto high-angle fractures from 47.0 to 50.0 linear feet. Strong petroleum odors were noted during most of the drilling operation. Total BTEX concentrations ranged from below detection levels to 550 ppm (at 14.2 feet). Benzene concentrations ranged from below detection levels to 18.6 ppm (at 14.2 feet). TPH concentrations ranged from below detection levels to greater than 3300 ppm (at 19.1 feet).

Boring 21-3009 was located on the north-facing slope approximately 20 feet southsouthwest of the former east fill station location. The vertical boring was advanced to a total depth of 17.5 feet bgs. Drilling was terminated because of the instability of the drilling rig on the steep slope. Approximately 3.0 feet of fill consisting of fine sand, silt and gravel overlay the tuff bedrock at this location. The remainder of the boring was drilled in moderately welded tuff, which was highly fractured with horizontal and lowangle fractures between 5.0 and 10.0 feet bgs. Slight petroleum odors were noted throughout the boring operation. Total BTEX concentrations ranged from below detection levels to 1.67 ppm. TPH concentrations ranged from 1461 ppm to a high of 2393 ppm. Maximum concentrations were noted at 14.6 feet bgs. An MEK concentration of 3.80 ppm was noted at a depth of 9.3 feet bgs.

UST Report -5-

Boring 21-3010 was located approximately 20 feet west-nbrthwest of the former east fill station location. The vertical boring was advanced to a total depth of 35 feet bgs. Approximately 6.5 feet of fill consisting of sandy silt and gravel overlay the tuff bedrock at this location. The remainder of the boring was drilled in non welded to poorly welded tuff. Much of the tuff intercepted by the boring was completely disaggregated or disaggregated along narrowly spaced horizontal partings. An unusual reddish-brown clay layer was noted between 14.0 and 14.5 feet bgs. Total BTEX and TPH concentrations were below detection levels throughout the boring.

Boring 21-3011 was located approximately 20 feet east-southeast of the former east fill station location. The vertical boring was advanced to a total depth of 40 feet bgs. Approximately 3.3 feet of fill consisting of fine sand, silt and clay overlay the tuff bedrock at this location. The remainder of the boring was drilled in poorly welded to moderately welded tuff. Horizontal to high-angle fractures were noted throughout the boring. Total BTEX concentrations ranged from below detection levels to a high of 2.70 ppm at 19.3 feet bgs. High TPH concentrations were noted at 19.3 feet bgs and 24.4 feet bgs (greater than 2000 ppm and greater than 1500 ppm, respectively). The remainder of the boring contained TPH concentrations below detection levels. Low levels (less than 1 ppm) of MEK and acetone were also detected.

Boring 21-3012 was located approximately 40 feet south-southwest of the former east fill station location. The vertical boring was located on a terrace at a higher elevation than the fill station location. Therefore, it was advanced to a total depth of 55 feet bgs to compensate for the additional elevation. Approximately 6.5 feet of fill material consisting of fine sand, silt and clay overlay the tuff bedrock in this location. The remainder of the boring was drilled in nonwelded to =moderately welded tuff. Horizontal to high-angle fractures were noted throughout the boring. Total BTEX and TPH concentrations were below detection levels throughout the boring.

Boring 21-3013 was located approximately 40 feet east-southeast of the former east fill station location. The vertical boring was advanced to a total depth of 35 feet bgs. Approximately 0.5 feet of fill consisting of fine sand and silt overlay the tuff bedrock at this location. The remainder of the boring was drilled in nonwelded to moderately welded tuff. Portions of the tuff were completely disaggregated. Few fractures were noted in the remaining samples. Total BTEX and TPH concentrations were below detection levels throughout the boring.

Records of tightness tests, repairs to the UST system, release detection monitoring results, and other pertinent records for the DP Tank Farm have not been found.

DP Canyon Creek Investigation

The nearesfsurface water course is approximately 120 feet north of the former DP Tank Farm site. An oil sheen was reported on a pool of water located in DP Canyon directly north of the former west fill station location. LANL has now confirmed the presence of petroleum hydrocarbons in the streambed of DP Canyon Creek.

Boring 21-3015 was located approximately 10 feet north of the north bank of the stream channel in DP Canyon. The vertical boring was drilled to a total depth of 9 feet bgs. Samples were collected on approximately 2- to 2.5-foot intervals and submitted to the MCAL for analysis of volatile organic compounds by Method 8020 and TPH by modified Method 8015. No surficial soil was encountered as the boring was drilled directly into the exposed tuff bedrock. No BTEX compounds were detected above detection levels. TPH concentrations of 131 ppm, 82 ppm, and 51 ppm were detected in

UST Report -6-

samples collected at depths of 3.5, 5.0, and 7.5 feet bgs, respectively. The remaining sample collected at 9.0 feet bgs did not contain TPH above the method detection limit.

Boring 21-3018 was located approximately 20 feet north of the north bank of the stream channel in DP Canyon and drilled vertically to a total depth of 9 feet bgs. Samples were collected on approximately 2- to 2.5-foot intervals and submitted to the MCAL for analysis of volatile organic compounds by Method 8020 and TPH by modified Method 8015. No surficial soil was encountered as the boring was drilled directly into the exposed tuff bedrock. No BTEX compounds were detected above detection levels. A TPH concentration of 296 ppm was detected in the sample collected at a depths of 2.5 feet bgs. The remaining samples did not contain TPH above the method detection limit Acetone was detected in concentrations up to 1.90 ppm. MEK was detected in concentrations up to 3.82 ppm. Maximum concentrations for both acetone and MEK occurred at a depth of 2.5 feet bgs.

Boring 21-3019 was located approximately 5 feet south of the south bank of the stream channel in DP Canyon and was drilled vertically to a total depth of 9 feet bgs. Samples were collected on approximately 2- to 2.5-foot intervals and submitted to the MCAL for analysis of volatile organic compounds by Method 8020 and TPH by modified Method 8015. No surficial soil was encountered as the boring was drilled directly into the exposed tuff bedrock. No BTEX compounds or TPH were detected above method detection levels. Acetone at a concentration of 0.41 ppm was detected at 2.5 feet bgs.

Four surface water samples were collected from the creek. Two were collected from the "seep" area (one with the "seep" left undisturbed and one after intentionally disturbing the "seep"), one was collected 250 feet downstream of the "seep," and one was collected 100 feet upstream of the "seep." MCAL results revealed no acetone, MEK, BTEX compounds, or TPH fu the water samples in concentrations above their respective detection limits.

Seven surface material, or tuff, samples were collected from the streambed at approximately the same locations as the surface water samples. Two samples, including one duplicate collected for QNQC purposes, were collected downstream of the "seep" and one was collected upstream of the "seep." Analytical results revealed no petroleum constituents in concentrations above the detection limits in either the upstream or the downstream samples. Four samples, including two duplicates, were collected at the "seep" location·(two on the north side of the creek and two on the south side). All samples were analyzed by the MCAL for BTEX, MEK, and acetone by EPA Method 8020 and TPH by modified EPA Method 8015. No BTEX, MEK, or acetone were detected above their respective detection limits in the samples collected from the "seep" location. However, TPH was detected in a concentration of 1382 ppm from the sample collected fmm the south side while the duplicate contained 1796 ppm. TPH was also detected in a concentration of 1042 ppm from the sample collected from the north side while the duplicate contained 569 ppm.

The investigation of potential impact .from the former DP Tanlc Farm petroleum release on the surface water in DP Canyon Creek indicates that no impact had occurred. The petroleum contamination on the north bank of DP Canyon, just north of the "seep" has been traced towards privately owned property located on the north side of the canyon. However, this petroleum contamination appears to have no adverse impact to the surface water quality of the creek.

UST Report -7-

USTR Required Information

The depth to groundwater beneath TA-21 is approximately 1000 feet. There are no private water supply wells or municipal water wells within a mile radius of this UST site. The nearest utility corridor is over 120 feet away from the petroleum release sites, running parallel with DP Road. No gasoline or potentially explosive or harmful vapors have been detected in this corridor or in the vicinity of the release. This report also contains information that is required in Part Xll, § 1206 B., of the USTR (see Enclosures 7 and 8). ·

Conclusion

LANL believes there is no threat to human health and the environment from the former DP Tank Farm petroleum release. Based on the data collected, no additional field investigations are proposed for the former Tank Farm or creek in DP Canyon. The data collected shows that the lateral and vertical extent of the petroleum hydrocarbon contamination has been bounded in the vicinity of the fill station locations. In addition, petroleum hydrocarbon contamination was detected in the subsurface on the north side of the creek in the "seep" area but not on the south side. However, the source of the petroleum may originate from off-site. Analytical results of the surface water samples revealed no petroleum constituents in concentrations above the analytical detection limits, indicating that there is no adverse impact to the surface water quality.

As discussed earlier in this report, LANL will transmit copies of validated data as soon as this data is available. Also, the presence of MEK ~d acetone in some of the soil samples will be discussed in LANL's up coming letter. If you have questions, please contact Jeff Carmichael at 665-2505.

Enclosures:

1. LANL Property Boundaries, Technical Areas, and The Location of The Former UST Tank Farm Located at TA-21

2. List of Former DP Tank Farm USTs and Site Map 3. Corehole Locations 4. Preliminary Soil Analyses 5. Core Sample Logs 6. LANL General Geology and Hydrology Information 7. Engineering Drawings of Utility Lines South of Former TA-21 DP Tank Farm 8. Groundwater Wells and Other Penetrations & Drawings

ENCLOSURE 1

LANL PROPERTY BOUNDARIES, TECHNICAL AREAS, AND THE

LOCATION OF FORMER UST TA-21 TANK FARM

Note: No surface impoundments, or pit areas reside in the vicinity of

this former tank farm.

Los Alamos National Laboratory Environmental Surveillance 1992

SANDOVAL COUNTY

LOS AlAMOS COUNTY

SANTA FE ,-..,-- .... _J'- ......... _

~-- \

NATIONAL FOREST ' RIO AAFIIM COUNTY

I SANTA Fe COUNTY~--

/ SANTA FE

"'' NATIONAL ---'- .... - ........ FO_R~S!

........ ~,.

' I ' , ••• _, _____ 1 ',

I ' .... , I ,

SAN ILOEFONSO PUEBLO

SANTA FE NATIONAL

FOREST

Regional location of Los Alamos National Laboratory.

' /' ' ' 16

Los Alamos National Laboratory Environmental Surveillance 1 992

LOS ALAMOS

,---=-------.--.~- '

... -~ ~ ... _.,. '" --.._.

( BNM

' ' __, •• -lr.

51 \.. ~" SANJLDEFONSO

(,\ PUEBLO I t as:::=:-:, -----..,~,

54 ,........, -, , __ _

BANOEUER NAilONAL

MONUMENT {BNM)

1eo 400 o 200 eoo 1000 1480

r-::-;ot',','l 2400 600 0 1200 2400 4aOO

Meterl Feet

'----//· ~~

/

WHITE ROCK

Technical areas (TAs) of Los Alamos National I.abon~tory in relation

to surrounding landholdings.

ENCLOSURE 2

LIST OF FORMER DP TANK FARM

USTs AND SITE MAP

1779139-187---t----------------1 --f--- ---+--------

1769139 187

TA-21 -.

00 co

"' 0

"' "' "' N

"' rl

---~ ---:~-~

TA-21, DP Tank Farm Site Location

--. .. _ ---- ---~--

__, -os Alamos Canyon

00 00

"' 0

"' rl

"' "' w rl

00 co .., 0

"' "' .. ,., "' rl

LEGEND

Q DirtRoads

lZSZJ Road, Paved

~ Outline for TA-21

I2SZ] Industrial Fences

~ Security Fences

-Buildings

Produced by: Belinda Schaber, 103248

Modniad by: Kirsten Oschwald 5/8195

+H St•le Plene Coordnala System, New Mulco Central Zona

1983 North American Dalum

l«)tl('.f ,,.-,,~- .............. _.,.. , ..... ·--··· ... - ...... --~--·""w<Vl'_, ___ ""_ ~ ........ __ ,_...., ~::::r;==:==.~:::.:r~= l__,.,._"--_,.,a _ _,. .....-. '"'

Tank Tank Structure Capacity Substan~ No. Number (gallons) Stored

12 TA-21-ATF-12 20,200 or No.2 fuel oil 38,()(X) or or kerosene 20,266

13 TA-21-ATF-13 24,700 or gasoline 36,()(X) or or diesel 24,770

14 TA-21-ATF-14 20.200 or No. 2 fuel oil 26..500 or or diesel 20,226

17 TA-21-ATF-17 51,000 or diesel ex 49,000 or leaded gasoline 51,015 or gasoline

IT Corp. 1987; LANL 1989a: Pan Am. 1986a; and Zia Co. 1983.

DESCRIPTION OF FORMER STORAGE TANKS AT DP TANK FARM (SWMU 21-050)'"

Tank Tank Structure Capacity Substance No. Number (gallons) Stored

TA-21-ATF-1 28..500 or No. 2 fuel oil 21.000 or diesel

2 TA-21-ATF-2 14,900or No. 2 fuel oil 21..500 or or diesel 14,994

3 TA-21-ATF-3 23.900or No. 2 fuel oil 26,000or or diesel 23,967

4 TA-21-ATF-4 14,900or No. 2 fuel oil 22,000or or diesel 14,994

5 TA-21-ATF-5 5100 or kerosene 5500or or diesel $170

6 TA-21-ATF-6 2100 or kerosene " 3000 or or gasoline

2099

7 TA-21-ATF-7 2900or kerosene or 2500 or leaded gasoline 2978 or gasoline

8 TA-21-ATF-8 5100 or kerosene 5500 or or diesel 5170

9 TA-21-ATF-9 21.600 or No. 2 fuel oil 25,000or or diesel 21,644

10 TA-21-ATF-10 21,600 or No. 2 fuel oil 25.000or or diesel 21.644

11 TA-21-ATF-11 23,900or diesel or 38,000 or leaded gasoline 23,967 or ethanol

alcohol

~: "\

w: .............

"'\ ""''"""-"" ...._ .......... A_,.. DP Canyon

-·-. _,.. ....

AA..... ......... ..... ,.,. .... .... (

.... ::::::::::,,~ -·~::::~.~~~~;.; _ _;:;,~~~-~-~-~~:~.~ ~-~:~~:~.~-West fill statloo ~----: _________ .. ,., : ~~~ II\

@ L~~~~·r --ft', East nn station t:::;\ ~, ............... : i \ f\ i Valve box "A"!;;) \ Valva box ·a·o \ . . _/ ,'1 t ' I\

No.2 Oiol. : _/' : , I t/ \ I \

: ~ g~,-1!~, jfcg ~~ Valve box ~J:;l Valve box ·c• ! \ 1 ~ ~ I 1

1 ~-• J: I, \ ~ I I .: = /,' \ \

•;:.-=--=--~;::: ~ ! ~ ! l 1 ~ !r:l ~~:m~~ 0' 0~ 8~ ~- 17..; ~~ . ~ Nw ~ ::::lj! IJd oiu! ! G. u~ • ""'""'· i "' ' -- -- ;l ·-·-:::..:._-~-·- . .L._._,J.,_, I .l"' ·- I ,/ ~~-;::::::~-~- • ..-·..-

: t ill! . . . . . '-·=-r=·=· . . . . . ·-· . . . . . . . ·-· . . . . ·-

cc= =-:J

...............

,,

OP Tank Farm (SWMU 21-029) showing layout of tanks, pipelines, and fill stations.

..---..----

..................

LEGEND

Road

Fenceline

Pipeline

Canyon rim

0 50 100h 11111111111

cARTogtlt!Y by A. Kron 4110r'35

\' \~ \"t \ '\ \

\ \

__ .\

ToDPSiltJ---

ENCLOSURE 3

COREHOLE

LOCATIONS

21-3025 0.

-....,

,.------

- _____ .. --21-3023

llo ....... , ~------· ·--· --···-..... .......____ __ ~~---~'

Technical Area 21

0 Buildings D County Parcel Base CZSZJ Contours, 1 OQ- foot G Contours, 20 foot + CZS2J Roads Map not

IIJ Location IDs to Scala 1983 North Amertcan Datum 21-x Projection and Grid nctts: + Vertical Borehole Location New Mexico State Plane Coordinate System. 21-x Grtd lnteNal: 100 feet

I ~ Angled Borehole Location Central Zone (Transverse Mercator) 21-x 1 o Surface Water Sampling Location Notice: Information on this map is provisional I ~.·; and has not been checked for accuracy. 8 I • Surface Soil/Tuff Sampling Location FIMAD G103187 10 Mar 95 ~ 1 1-. Modified by Kirsten Oschwald 2 Jun 95 l ;e

i ~~A~I~Ib~o~r~e~h;ot~w~aa~m~~~~~n~g~l;oea~ti~o~n~•~•~~~·~p~pro~x~lm~m~e~~========================~==~M~od~ifl~ed~~R~o~n~~~2~8~J~u~n~e~9~5========~====== L:

Boreholes Drilled at OP Tank Farm

ENCLOSURE 4

PRELIMINARY SOIL ANALYSES

Borehole 21-3002 Sample Interval

Sample ( f t}_ Head space Number From To (ppm)

0008 3.9 4.4 0.0 0009 8.8 9.4 0.1 0010 13.9 14.5 0.0 0011 19.2 19.8 0.0 0012 22.5 23.0 0.0 0139 29.0 29.5 NA (4) 0140 32.0 32.5 NA

------~


Sample ( f t) Headspace Number From To (ppm)

0015 4.0 4.6 0.0 0016 8.7 9.3 0.0 0017 13.5 14.3 165.0 0018 18.5 19.2 181.0 0019 23.8 24.5 13.1 0020 28.4 29.0 0.0 0021 34.0 34.7 0.0 0022 38.7 39.2 NA 0141 44.0 44.5 __ N6_ ___

PRELIMINARY ANALYTICAL RESULTS (1) DP TANK FARM MAY/JUNE 1995

EPA Method 8020 (ppm) (2)

Acetone MEK Benzene Toluene Ethylbenzene M,P-Xylene NO (3) NO NO NO NO NO

NO NO NO NO ND ND ND 5.00 0.52 0.24 ND ND ND 3.83 0.59 0.27 ND ND ND 6.43 0.61 0.28 ND ND ND 4.39 0.61 0.27 ND ND NQ __ ~-~~ ~56_ 0.26 ND ND __

--- - ----·- ----- --

EPA.tv1ethod 8020 (ppm)

Acetone MEK Benzene Toluene Ethylbenzene M,P-Xylene ND ND ND ND ND ND ND ND ND ND ND NO ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND

Page 1 of 11

May 25, 1995 EPA Method

8015 Total TPH

0-Xylene BTEX (ppm) NO NO NO ND ND ND ND 0.76 ND ND 0.87 ND ND 0.89 NO ND 0.87 ND ND 0.82 ND


8015 Total TPH

0-Xylene BTEX (ppm) ND ND ND ND NO ND ND ND >600 ND ND >670 ND ND NO ND ND NO .

ND ND ND ND ND ND I ND ND ND I


Sample ( ft) Head space Number From To (ppm) Acetone

0023 3.1 3.7 0.0 NO 0024 9.1 9.6 0.0 NO 0025 13.8 14.3 0.0 NO 0026 17.0 17.5 0.0 NO 0027 23.5 24.2 0.0 ND 0028 28.7 29.3 0.3 ND 0029 33.9 34.4 0.0 NO 0030 38.5 39.0 NA ND 0031 42.5 43.0 NA NO

----------


Sample ( ft) Headspace Number From To (ppm) Acetone

0032 3.8 4.3 0.0 NO 0033 8.4 9.2 0.1 ND 0034 13.6 14.1 0.0 ND 0035 18.9 19.3 0.0 NO 0036 22.0 23.0 0.1 ND 0037 22.0 23.0 0.1 NO 0038 29.0 29.5 NA NO 0039 34.0 34.5 NA ND

PRELIMINARY ANALYTICAL RESULTS (con't) DPTANK FARM

EPA Method 8020 (ppm)

MEK Benzene Toluene Ethylbenzene M,P-Xylene 0-Xylene NO NO NO NO NO NO ND ND ND ND ND NO ND NO ND NO ND ND ND ND ND ND ND NO ND NO ND ND ND NO ND ND NO ND NO ND ND ND ND ND ND ND ND NO ND ND ND ND ND NO ND NO NO ND -----

I I


MEK Benzene Toluene Ethylbenzene M,P-Xylene 0-Xylene 7.72 0.53 0.19 ND ND ND 2.78 0.61 0.22 ND ND ND 4.32 0.65 0.23 NO NO NO 3.37 0.65 0.24 NO NO NO 4.88 0.70 0.26 NO NO ND 4.80 0.70 0.26 NO ND ND 4.92 0.61 0.23 NO NO ND 3.95 0.67 0.26 ND ND ND

Page 2 of 11

May 30-31 , 1995 EPA Method

8015 Total TPH BTEX (ppm)

NO NO ND NO I ND ND I ND NO ND NO ND NO NO ND ND ND

, __ I'!Q NO


8015 Total TPH BTEX liJpm) 0.72 NO 0.83 ND 0.89 NO 0.89 NO 0.96 NO 0.97 NO 0.84 ND 0.93 ND i

Borehole 21-3006 Sample ' Interval

Sample ( f t) Headspace Number From To (ppm) Acetone

0041 4.0 4.8 0.0 NO 0042 9.3 9.8 8400.0 NO 0043 14.0 14.5 331.0 NO 0044 19.0 19.5 NA ND 0045 24.0 24.5 702.0 NO 0046 29.3 29.5 98.0 NO 0047 34.0 34.5 395.0 ND 0048 39.0 39.5 219.0 NO 0121 43.4 43.9 133.0 0.64 0122 49.0 49.5 2.7 NO 0123 54.1 54.5 4.0 NO 0124 57.0 57.3 0.0 NO 0125 59.4 59.7 0.0 NO 0126 64.2 64.5 '-----~0.0 -- NO

PRELIMINARY ANALYTICAL RESULTS (can't) DP TANK FARM

EPA Method 8020 (ppm}

MEK Benzene Toluene Ethylbenzene M,P-Xylene 0-Xylene NO NO ND NO NO ND NO 18.4 158.9 72.6 300.4 124 ND 6.3 61.2 27.9 147 66.8 NO 6.9 117.9 63 272.3 131 ND NO 37.8 15.3 108.4 54.1 NO 0.053 NO ND ND NO

0.75 0.062 ND ND NO NO NO 0.065 NO NO NO NO

0.35 NO ND NO NO NO NO NO ND ND NO NO NO NO NO NO NO ND NO ND NO ND ND NO NO NO NO NO NO NO ND NO ND NO NO NO

Page3of11

May 17-19, 1995 EPA Method

8015 Total TPH BTEX {I:>pm)

NO NO 674.3 >1800 309.2 >1600 591.1 >700 215.6 >550 0.053 NO 0.062 503 0.065 NO

NO NO NO NO NO NO ND ND NO ND

'- NO NO


Sample ( ft) Head space Number From To (ppm)

0049 4.0 4.8 0.0 0050 9.0 9.8 0.0 0051 14.3 14.8 0.0 0052 19.0 19.5 0.0 0053 24.0 24.8 0.0 0054 29.2 29.7 154.9 0055 34.2 34.6 205.5 0056 39.2 39.6 1.2 0127 44.0 44.7 0.0 0129 48.7 49.1 0.0

PRELIMINARY ANALYTICAL RESULTS (con't) DPTANKFARM


Acetone MEK Benzene Toluene Ethvlbenzene M,P-Xylene 0-Xylene NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO

-- ~1...------ L-NO NO NO NO NO

Page 4 of 11

May 19. 1995 -EPA Method 1

8015 . I

Total TPH BTEX (ppm)

NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO - ____ ___l'J_Q

Borehole 21-3008 Sample '

Interval

Sample ( f t) Head space Number From To (ppm) Acetone

0057 3.0 3.5 52.5 NO 0130 6.2 6.8 1452.0 NO 0058 8.8 9.4 1853.0 NO 0059 13.8 14.2 NA NO 0060 18.5 19.1 NA NO 0131 18.5 19.1 NA NO 0061 24.0 24.5 NA NO 0062 29.0 29.5 NA NO 0063 34.0 34.5 517.0 0.60 0064 38.4 39.0 47.0 0.70 0132 43.8 44.2 4.9 1.40 0133 49.1 49.6 12.6 ND


Sample ( ft) Headspace Number From To (ppm) Acetone

0065 4.3 4.9 290.0 ND 0066 8.8 9.3 1098.0 ND 0067 14.3 14.6 NA L._~Q ___ ------



MEK Benzene Toluene Ethylbenzene M,P-Xylene 0-Xylene NO NO NO NO NO NO NO NO 0.45 0.13 2.60 2.70 NO NO NO NO 3.40 2.90 NO 18.60 115.00 75.00 218.00 123.00 NO 12.80 55.00 34.70 101.00 56.20 NO 9.40 52.40 31.50 91.90 52.10 NO 6.80 65.20 48.40 161.00 87.30 NO NO 0.71 NO 2.60 1.40 NO ND ND NO ND NO NO NO NO NO ND ND ND NO ND ND ND ND ND ND ND ND ND ND

---· -- -


MEK Benzene Toluene Ethylbenzene M,P-Xylene 0-Xylene ND ND ND ND ND ND

3.80 NO ND ND ND ND ND NO 0.03 0.21 0.60 0.83

Page 5 of 11

May 22-23, 1995 EPA Method


NO NO 5.88 >1500 6.30 >900

549.60 >2000 259.70 >1200 237.30 >3300 368.70 >1200

4.71 NO NO NO ND ND NO ND ND ND



ND 1461 ND 1678 1.67 2393


Sample ( f t) Head space Number From To (ppm) Acetone

0074 4.0 4.7 0.6 ND 0075 9.0 9.5 1.9 ND 0076 13.5 14.0 0.6 ND 0077 19.0 19.4 0.3 ND 0078 23.7 24.4 0.3 ND 0079 26.8 27.6 0.3 ND 0080 33.5 34.0 0.0 ND


Sample (ft) Headspace Number From To (ppm) Acetone

0082 3.2 3.7 91.0 ND 0083 8.4 8.9 210.0 ND 0084 13.1 13.6 57.0 ND 0085 19.0 19.3 665.0 ND 0086 23.6 24.4 560.0 ND 0087 29.0 29.4 227.0 0.27 0088 33.5 34.4 121.0 ND 0089 33.5 34.4 NA ND 0135 39.0 39.5 NA ND



MEK Benzene Toluene Ethylbenzene M,P-Xylene 0-Xylene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND

EPA Method 8020 , (ppm)

MEK Benzene Toluene Ethylbenzene M,P-Xvlene 0-Xylene ND ND ND ND ND ND

0.44 ND ND ND ND ND ND ND ND ND 0.12 0.14 ND ND ND ND 1.30 1.40 ND ND ND 0.03 0.29 0.34

0.86 ND ND ND ND ND ND ND ND ND ND ND

0.68 ND ND ND ND ND ND ND ND ND ND ND

Page 6 of 11

May 22, 1995 EPA Method ,

8015 I


ND NDI ND NDi ND ND: ND ND, ND NDi ND NDI ND NO!

May 23, 1995 -EPA Method ·


ND ND ND ND

0.26 ND 2.70 >2000 0.66 >1500 ND ND ND ND ND ND ND ND

-------


Sample ( ft} Headspace Number From To (ppm) Acetone

0090 3.2 3.6 0.1 ND 0091 8.6 9.2 0.0 ND 0092 14.0 14.7 0.0 ND 0093 16.7 17.3 0.0 NO 0094 23.8 24.6 0.0 NO 0095 26.3 26.8 0.0 NO 0096 33.9 34.7 0.0 NO 0097 38.9 39.4 0.0 NO 0136 43.0 43.5 0.0 NO 0137 49.0 49.5 NA ND 0138 54.0 54.5 NA NO


Sample ( ft) Head space Number From To (ppm) Acetone

0098 3.5 4.2 0.0 ND 0099 8.4 9.1 0.1 ND 0100 14.0 14.5 0.0 ND 0101 18.8 19.4 0.0 ND 0102 24.0 24.5 0.1 ND 0104 29.0 29.5 NA ND 0105 32.7 33.2 NA ND

PRELIMINARY ANALYTICAL RESULTS (can't) DPTANK FARM


MEK Benzene Toluene Eth_ylbenzene M,P-Xylene 0-Xylene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NO NO NO ND NO NO NO NO NO NO NO NO NO NO NO NO NO ND NO NO NO ND ND NO NO ND NO ND NO NO NO NO ND NO NO NO NO NO NO NO NO ND NO NO NO NO NO NO NO NO ND

EPA Method 8020 (oom}

MEK Benzene Toluene Ethvlbenzene M,P-Xylene 0-Xylene ND NO ND NO ND ND NO ND NO NO NO ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND

Page 7 of 11


8015


ND ND ND ND NO NO NO NO NO ND NO NO NO ND NO ND NO NO NO NO ND NO


8015


ND ND I NO ND ND ND ND ND ND ND ND ND ND NO

Borehole 21-3014 Sample ;

Interval

Sample ( f t) Headspace Number From To (ppm)

0160 3.8 4.5 0.0 0161 8.4 9.0 0.0 0162 13.7 14.4 0.0 0163 18.5 19.2 0.0 0164 18.5 19.2 0.0 0165 21.4 22.0 0.0 0168 29.0 29.5 NA 0169 31.5 32.0 NA

Borehole 21-3015

Acetone NO ND NO ND ND NO NO NO



MEK Benzene Toluene Ethylbenzene M,P-Xylene 0-XyJene ND ND ND NO ND NO NO NO ND ND NO NO NO ND ND NO NO NO ND ND ND NO ND NO ND NO ND NO NO NO NO NO NO ND ND NO NO ND NO NO ND NO ND ND ND NO ND NO

Shallow Borehole Approximately 10 Feet North of Seep

Sample EPA Method 8020 Interval (ppm)

Sample (ft) Heads pace Number From To (ppm} Acetone MEK Benzene Toluene Ethylbenzene M,P-Xylene 0-Xylene

0171 3.0 3.5 NA NO ND ND NO ND ND NO 0172 4.5 5.0 NA NO NO NO NO NO ND ND 0173 7.0 7.5 NA NO NO NO ND NO NO NO 0174 8.5 9.0 NA ND ND ND ND NO NO NO

Page 8 of 11



NO ND NO NO ND ND NO ND NO ND NO NO NO NO NO NO

. - -

June 1. 1995 EPA Method

8015 Total TPH BTEX (ppm) .

NO 131 ND 82 ND 51 ND ND

Borehole 21-3018

PRELIMINARY ANALYTICAL RESULTS (can't) DPTANK FARM

Shallow Borehole Approximately 20 Feet North of Seep


Sample ( f t) Headspace Number From To (ppm) Acetone MEK Benzene Toluene Ethylbenzene M,P-Xylene 0-Xylene

0218 1.5 2.5 NA 1.90 3.82 ND ND ND ND ND 0219 4.0 4.5 NA 0.90 1.71 ND ND ND ND ND 0220 6.0 7.0 NA ND 1.66 ND ND ND ND ND 0221 8.0 9.0 NA 0.54 ND ND ND ND ND ND

Borehole 21-3019 Shallow Borehole Approximately 5 Feet South of Seep


Sample ( f t) Headspace ~

Number From To (ppm) Acetone MEK Benzene Toluene Ethylbenzene M,P-Xylene 0-Xylene 0223 1.5 2.5 NA 0.41 ND ND ND ND ND ND 0224 4.0 5.0 NA ND ND ND ND ND ND ND 0225 6.0 7.0 NA ND ND ND ND ND ND ND 02215 8.0 9.0 NA ND ND ND ND ND ND ND

-

Page 9 of 11

June 8, 1995 EPA Method

8015 Total TPH

I BTEX (ppm) ND 296 I

ND ND ND ND ND NO



ND ND ND ND ND ND ND ND

PRELIMINARY ANALYTICAL RESULTS (can't} DP TANK FARM

Surface SoiVTuff Sample Sites 21-3023, -3024, and -3025 Approximate ; EPA Method 8020

Sample (ppm) Sample Location Heads pace Number . (relative to seepj (ppm) Acetone MEK Benzene Toluene Ethylbenzene M,P-Xylene 0-Xylene

0185 250' downstream NA 0.76 ND ND NO NO ND ND 0186 250' downstream NA ND ND NO NO NO NO NO - At Seep (see sample sites 21-3020 and 21-3021 below ·-0187 1 00' up§tre!'11'1_ J NA l ... 0.71 ND ND ND ND NO ____ _t ND

Surface Sample Site 21-3020 Sampl~fQllected from stream bed at seepjust above waterline. South bank.

Sample I EPA Method 8020 Interval (ppm)

f t Headspace 1 1 1 1

Sample Number From To (ppm) I Acetone MEKI Benzene I Toluene I Ethylbenzene I M,P-Xylene I 0-Xylene

0228 0.01 0.41 NA I ND ND I NO I NO I NO I ND I NO 0229 0.01 0.41 NA I NO ND I ND I ND I ND I ND I NO

Surface Sample Site 21-3021 bed ···r-·- ---· ---- ----·- ------------- --- b -------- - ------ line. North bank -- . - -- --- -- --


Sample ( ft) Headspace Number From To (ppm} Acetone MEK Benzene Toluene Ethylbenzene M,P-Xylene 0-Xylene

0233 0.0 0.4 NA 6.29 ND ND ND ND ND ND 0234 0.0 0.4 NA 8.21 ND ND ND ND ND ND

---~

Page 10 of 11

L_

Total BTEX

ND ND

ND

Total BTEX

NO NO

Total BTEX

ND ND

June 14, 1995

I

EPA Method 8015 TPH

(ppm) NO NO

NO


8015 TPH (ppm) >1382 >1796

J - ---- . -' . ---

EPA Method 8015 TPH (ppm) >1042 >569

Surface Water Samples Approximate

Sample Sample Location Heads pace

PRELIMINARY ANALYTICAL RESULTS (con't) DPTANK FARM


Number I (relative to seep) (ppm) Acetone MEK Benzene Toluene Ethylbenzene M,P-Xylene 0-Xylene 0243 250' downstream NA NO NO NO NO NO NO 0244 At Seep NA NO NO NO NO NO NO 0245 1 00' upstream NA NO NO NO NO NO NO

0247* At Seep NA NO NO NO NO NO NO * Sample 0247 (collected 6/8/95) was collected downgradient of the seep after intentionally disturbing the seep

to produce a visible sheen on the water.

Footnotes: (1) All data is preliminary, pending validation

(2) ppm - parts per million (3) ND- Not detected above the MCAL detection limits, which are as follows:

Acetone: 0.2 ppm Toluene: 0.05 ppm MEK: 0.2 ppm Ethylbenzene: 0.05 ppm Benzene: 0.05 p~111 Xylenes: 0.05 ppm

TPH: 50 ppm (4) NA- Not analyzed

NO NO NO NO

Note that, for investigation purposes, the UST action level for total BTEX is 100 ppm. For remediation purposes, UST action levels are 50 ppm for total BTEX and 10 ppm for benzene, or 100 ppm for TPH. These remediation action levels are used at sites contaminated with "highly contaminated" or saturated soils and contaminated soils that are 50 feet or less above the seasonal high groundwater level.

Page 11 of 11



NO NO NO NO NO NO NO ND

ENCLOSURES

CORE SAMPLE LOGS

LOS ALAMOS NATIONAL lABORATORY ENViRONMENTAL RESTORATION PROGRAM

S~Me~E M~t::I~GEMEt::II E-6~1~1:0:: I CORE SAMPLE LOG FU~~

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LOS ALAMOS NATIONAL LABORATORY ENViRONMENTAL RESTORATION PROGRAM

SAMEL.E MAt::IA!3EMEt::II EAQILII.Y I CORE SAMPLE LOG

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S~MeL.e M~~~GEMEt;ji ~QILIIY J CORE SAMPLE LOG

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LOS AlAMOS NATIONAL LABORATORY ENViRONMENTAL RESTORATION PROGRAM

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Prepared by /}~C. IIA.mo_il.v~.. Date F· J;-tj Checked By /-a'/.~ Date /tY/P'>

ENCLOSURE 6

LANL GENERAL GEOLOGY AND

HYDROLOGY INFORMATION AND

SURFICIAL GEOLOGY AT THE

DP TANK FARM SITE ::

Surficial Geology - DP Tank Farm Site

According to the "Soil Survey of Los Alamos County, New Mexico" (LASL, LA-6779-MS), the surface soils found at the site are composed of the Hackroy sandy loam. The surface layer of this soil is typically described as follows: brown and moist; weak fine subangular blocky structure; hard and friable moist; common :fme angular pores; mildly alk:aline;.and abrupt smooth boundary. ERM/Golder observed the surficial soils in the vicinity of the two fill station locations to be thin and poorly developed fine sand, silt and gravel overlaying the tuff bedrock. Soil thicknesses ranged from less than 1 foot at boring 21-3013 located near the east fill station to approximately 7.5 feet at boring 21-3004 located south of the former west fill station.

In all areas of the site, the soils overlay Unit 3 of the Tshirege Member of the Bandelier Tuff. This unit is typically described as a grey, nonwelded to moderately welded tuff containing pumice fragments up to 3 em in diameter with up to 15 percent crystals and lithic fragments embedded in the matrix. Horizontal to high-angle fractures are common. Many of the fractures were lined with carbonate materials or clays. Much of the core recovered was completely disaggregated, making accurate lithologic descriptions and fracture characterization difficult to impossible.

LOS AlAMOS NAnONAL lABORATORY ENVIRONMENTAL SURVEILI.ANCC t;Qt

West

2200-

wE 2100->-o...J 2000 cou.J <:> 1900 z~ QL5 1775 ~CJ) 1750

~~ 1700

1600 W2

1500 East

0 Tuff 0 Alluvium 0 Basalt

Piezometric Surface in Main Aquifer

f!!! Conglomerate

• Sediments - Perched Water

~pproximately 3 mile~ I (Skm) (

Fig. 11-6. Conceptual illustration of geologic-hydrologic relationship in Los Alamos area.

(3 ft) to u much as 30 m (100 ft) in thickncsa. The alluvium is permeable, in contaat to the uuderlying volcanic tuff aDd sedimellll. Intenniuent runoff in canyons infiltrates the alluvium ualilill downward movement is impeded by the leu permeable tuff aDd volcanic sediment. Tbia raulllllla sbaUow alluvial groundwater body that movca dowll padielll within the alluvium. As water in tbe alluviummovca down gradient, it is depleted by evapota111pilatioa aDd movement into underlying vokaa.k:a (Purtymull1977}.

Perched water oc:aaa in conglomerate and basalts beneath the alluvium ill portio111 of Pueblo, Loa Alamos, aDd Saudla Canyoaa. It hu beell encountered at depths of about 37m (120ft) ill tbe midreacb of Pueblo Cuyon, about 45 to 60 m (150 to 200ft) beneath the surface in lower Pueblo and Loa Alamoa Canyons near their confluence, mainly in basalts in Los Alamos Cuyon at 61-76 m (200-250 ft) (Fig. II-6), and in Sandia Canyon near tbe eastem Laboratory boundary at a depth of about 13'7-m (4SO ft)~ Perched water bas

one discharge point at Basalt Spring in Los Alamos Canyoa.

The maillaquifer of tbe Los Alamos area is tbe only aquifer ill the area capabfc of serving as a municipal watersupply. Tbe surface of the aquifer rises westward from tbe Rio Gllade within the Tesuque Formation into the loowrpartoftbe Puye Formation beneath tbe central aod westem part of tbe plateau. Depth to the aquiCer ranges from 360 m (1,200 ft) along the western margin of the plateau to about 180 m (600 ft) at the eutem margia. Tbe main aquiCer is isolated from alluvialand pcrcbcd waters by about 110 to 190 m (350 to 620 ft) of dry tuff and volcaaic sediments. Thus, there is Uttle hydrolopc coDDeedon or potential for recharge to the main aquifer from alluvial or perched water.

Water Ia the main aquifer is uDder artesian conditions in the eastem part aad along the Rio Grande (Purtymun 1974b). Major ~cbargc to tbe main aquifer is inferred to be from tbe west because of the slope of the piezometric surface. The main aquifer :iischa rges into the Rio Grande through springos in White Rock

LOS ALAMOS NATIONAL L.ASORATORV ENVIRONMENTAL SURVEILLANCE 1GG1

West

2200-

wE 2100->-0~ 2000 ccUJ <(> 1900 z~ QL5 1775 ~(/) 1750

~~ 1700

1600 w~

1500 East

D Tuff D Alluvium D Basalt

Piezometric Surface In Main Aquifer

1!!1 Conglomerate • Sediments • Perched Water

~pproximately 3 mile~ I_ cskm) I

Fig. 11-6. Conceptual illustration of geologic-hydrologic relationship in Los Alamos area.

(3 ft) to u much as 30 m (100 ft) in thicknesa. The alluvium is permeable, in contrast to the underlying volcanic tuff aDd sediments. Intermiucnt ruooff in canyons infiltrates the alluvium uldil its downward movement is impeded by the lesa pci"'DC&ble tuff aad volcanic sediment. This ~aulta ina sballow alluvial groundwater body that moves down gradient within tbe alluvium. !u water in the alluvium moves down gradient, it is depleted by evapotranspitationaod movement into underlying volc:aaica (Purtym.un1977).

Perched water occ:un in conglomerate and basalta beneath the alluvium ia portioaa of Pueblo, Loa Alamos, aad Sandia Canyona. It bu beea encountered at depths of about 37m (120ft) Ia the midreacb of Pueblo Cuyon, about4S to 60 m (150 to 200ft) beneath the surface in lower Pueblo aDd Loa Alam<ll Canyons ncar their confluence, mainly in basalts in Los Alamos Cuyon at61-76 m (200-250 ft) (Fig. 11-6), and in Sandia Canyon near the eastern Laboratory boundary at a deptb of about 137-m (450ft). Perched water bas

one discharge point at Basalt Spring in Los Alamos Canyon.

Tbc main aquifer of tbc Los Alamos area is the only aquifer In the area capabk of serving as a municipal water supply. The surface of the aquifer rises westward from tbe RJo GnDde within the Tesuque Formation into tbe ~rpart oftbe Puye Formation beneath the central aDd westem part of tbc plateau. Depth to the aqui!cr ranges fiom 360 m (1,200 ft) along the western maqpn of the plateau to about 180m (600ft) at the eutem margin. The main aquifer is isolated from alluvial aDd pcn:bed wate11 by about 110 to 190 m (350 to 620ft) of clly tuflaad volcanic: sediments. Thus, there is Uttlc bydJ:Oiosic coDDedion or potential for recharge to tbe mala aquifer from alluvial or perched water.

Water In the main aquifer is under artesian conditions in tbc eaatcm part a ad along the Rio Grande (Purtymun 1974b). Major rechaip to the main aquifer is inferred to be from tbc west because of the slope of tbc picmmetric surface. The main aquifer discharges into the Rio Grande through sprinjp in White Rock

Surficial Geology - DP Tank Farm Site

According to the "Soil Survey of Los Alamos County, New Me-xico" (LASL, LA-6779-MS), the surface soils found at the site are composed of the Hackroy sandy loam. The surface layer of this soil is typically described as follows: brown and moist; weak fine subangular blocky structure; hard and friable moist; common fine angular pores; mildly alkaline; and abrupt smooth boundary. ERM/Golder observed the surficial soils in the vicinity of the two fill station locations to- be thin and poorly developed fme sand, silt and gravel overlaying the tuff bedrock. Soil thicknesses ranged from less than 1 foot at boring 21-3013 located near the east fill station to approximately 7.5 feet at boring 21-3004 located south of the former west fill station.

In all areas of the site, the soils overlay Unit 3 of the Tshirege Member of the Bandelier Tuff. This unit is typically described as a grey, nonwelded to moderately welded tuff containing pumice fragments up to 3 em in diameter with up to 15 percent crystals and lithic fragments embedded in the matrix. Horizontal to high-angle fractures are common. Many of the fractures were lined with carbonate materials or clays. Much of the core recovered was completely disaggregated, making accurate lithologic descriptions and fracture characterization difficult to impossible.

ENCLOSURE 7

ENGINEERING DRAWING OF UTILITY

LINES SOUTH OF THE FORMER

TA-21 DP TANK FARM

TAACT Y-2.

~Q~~:'S·

TA-21 PDTankFann

_______,__j \ ~ \ 0 ~ 0\- I iRACI l '

WesiF>!IStatiM r '

llastPillSitolion ~,.~~·-~ ....

·" ,f,

)o' •• .. -~lt· ~ .;.

SL ~ Sew.,. Lin• 4 ~ouLino <19~25 XVA • Powe< Line

----&"w----

.<~ TRACT AA

ENCLOSURE 8

GROUNDWATER WELLS

AND OTHER PENETRATIONS AND DRAINAGES

Note: The nearest municipal water well from the former TA-21 PD Tank Farm is PM-3. PM-3 is approximately 15,000 feet, east south-east from the site.

~-

114

LEGEND PERCHED ALLUVIAL MONITORING WELLS (Old wells are pre-1990; new wells installed since 1990 according to EPA guidelines)

o New Dry Well

e Old Dry Well • New Saturated Well

~ Old Saturated Well

MAIN AQUIFER -+- Water Supply Well

-$- Test Well

OTHER

~ Spring

/'../ Drainage ~ LANL Boundary

,,

e loc,..~•o,.) o~h;lt .... ~tt.. :t:>P ( ... olk_ Fc...n.."" North, Nlf Stole Plone NAD27 I ............ n ................... .

I lttt 4111 lUI U caTTTTTITr=== ===-r- =:J

Sul1 f: Uttt

lOTI((: lahr•tllll u !llh • ., It ''"hlntl

t•f ••• Ul ltU dnhf ,,, UUUCJ -----·-·--

"'

'-.....

0 __ 1: ___________ -· ------- -------------

ENCLOSURE9

SOIL SAMPLE RESULTS

Borehole 21-3002 Sample

Interval

Sample (ft) Headspace

Number From To (ppm) Acetone

0121-95-0 3.9 4.4 0.0 u (4)

0009 8.8 9.4 0.1 u 0010 13.9 14.5 0.0 u 0011 19.2 19.8 0.0 u 0012 22.5 23.0 0.0 u 0139 29.0 29.5 NA (6} u 0140 32.0 32.5 NA u

---·--

~-------- -- ---- ---

Sample

Interval


Number From To (ppm) Acetone

0015 4.0 4.6 0.0 u 0016 8.7 9.3 0.0 u 0017 13.5 14.3 165 u 0018 18.5 19.2 181 u 0019 23.8 24.5 13 u 0020 28.4 29.0 0.0 u 0021 34.0 34.7 0.0 u 0022 38.7 39.2 NA u 0141 44.0 44.5 NA u

SOIL SAMPLE RESULTS (1) DPTANK FARM

May 1995

EPA Method 8020

(ppm) (2)

MEK{3) Benzene Toluene Ethylbenzene

u u u u u u u u u 0.52 0.24 u u 0.59 0.27 u u 0.61 0.28 u u 0.61 0.27 u u 0.56 0.26 u

-~~-

EPA Method 8020 {ppm)

MEK Benzene Toluene Ethylbenzene

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 u u u u u u u u

Mav 25. 1995

EPA Method

8015

Total TPH M,P-Xylene 0-Xylene BTEX (ppm)

u u u u u u u u u u 0.76 u u u 0.87 u u u 0.89 u u u 0.87 u

_ __L.J__ - u 0.82 u

... --, . ---EPA Method

8015


u u u u u u u u u u u >600 J u u u >670 J u u u u u u u u u u u u u u u u u u u u


Interval

Sample ( ft} Headspace

Number From To (ppm) Acetone MEK

0023 3.1 3.7 0.0 u u 0024 9.1 9.6 0.0 u u 0025 13.8 14.3 0.0 u u 0026 17.0 17.5 0.0 u u 0027 23.5 24.2 0.0 u u 0028 28.7 29.3 0.3 u u 0029 33.9 34.4 0.0 u u 0030 38.5 39.0 NA u u 0031 42.5 43.0 NA u u

Borehole 21-3005 - --- -.

Sample

Interval

Sample ( f t) Headspace


0032 3.8 4.3 0.0 u u 0033 8.4 9.2 0.1 u u 0034 13.6 14.1 0.0 u u 0035 18.9 19.3 0.0 u u 0036 22.0 23.0 0.1 u u 0037 22.0 23.0 0.1 u u 0038 29.0 29.5 NA u u 0039 34.0 _ :3~._ NA u u

SOIL SAMPLE RESULTS (1) DPTANKFARM

May 1995


Benzene Toluene Ethylbenzene

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

EPA Method 8020 I I (ppm)

Benzene Toluene Ethvlbenzene

0.53 0.19 u 0.61 0.22 u 0.65 0.23 u 0.65 0.24 u 0.70 0.26 u 0.70 0.26 u 0.61 0.23 u 0.67 0.26 u

M,P-Xylene

u u u u u u u u u

M,P-Xylene

u u u u u u u u

Mav 30-31. 1995 . I • ~

EPA Method

8015

Total TPH 0-Xylene BTEX (ppm)

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

-----

Mav 26. 1995 '.

EPA Method I 8015

Total TPH

0-X~ene BTEX (ppm) I u 0.72 u u 0.83 u u 0.89 u u 0.89 u u 0.96 u u 0.97 u u 0.84 u u 0.93 u

---


Sample (It} Headspace Number From To (ppm) Acetone MEK

0041 4.0 4.8 0.0 u u 0042 9.3 9.8 8400 u u 0043 14.0 14.5 331 u u 0044 19.0 19.5 NA u u 0045 24.0 24.5 702 u u 0046 29.3 29.5 98 u u 0047 34.0 34.5 395 u u 0048 39.0 39.5 219 u u 0121 43.4 43.9 133 u u 0122 49.0 49.5 2.7 u u 0123 54.1 54.5 4.0 u u 0124 57.0 57.3 0.0 u u 0125 59.4 59.7 0.0 u u 0126 64.2 64.5 0.0 u u


Sample (It) Headspace Number From To (ppm) Acetone MEK

0049 4.0 4.8 0.0 u u 0050 9.0 9.8 0.0 u u 0051 14.3 14.8 0.0 u u 0052 19.0 19.5 0.0 u u 0053 24.0 24.8 0.0 u u 0054 29.2 29.7 155 u u 0055 34.2 34.6 206 u u 0056 39.2 39.6 1.2 u u 0127 44.0 44.7 0.0 u u 0129 48.7 49.1 0.0 u u


May 1995


Benzene Toluene Ethylbenzene u u u

18.4 J 158.9 J 72.6 J 6.3 61.2 27.9 6.9 117.9 63 u 37.8 J 15.3 J

0.053 u u 0.062 u u 0.065 u u

u u u u u u u u u u u u u u u u u I

I u ------------

M,P-Xylene u

300.4J 147

272.3 108.4 J

u u u u u u u u u

-------------- -


Benzene Toluene Ethylbenzene M,P-Xylene 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 u u u u u u u u u u u u

Mav 17-19. 1995 EPA Method

8015

Total TPH 0-Xylene BTEX (ppmJ

u u u 124 J 674.3 J 8239 66.8 309.2 7008 131 591.1 >2901

54.1 J 215.6 J 2049 u 0.053 u u 0.062 2365 u 0.065 213 u u 114 u u u u u u u u u u u u u u u

--- -----

Mav 19. 1995 EPA Method

8015


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 u u

Sample

Interval



0057 3.0 3.5 53 UJ (7) u 0130 6.2 6.8 1452 UJ u 0058 8.8 9.4 1853 u u 0059 13.8 14.2 NA UJ u 0060 18.5 19.1 NA UJ u 0131 18.5 19.1 NA UJ u 0061 24.0 24.5 NA u u 0062 29.0 29.5 NA UJ u 0063 34.0 34.5 517 u u 0064 38.4 39.0 47 u u 0132 43.8 44.2 4.9 u u 0133 49.1 49.~ ~_j_:3_ u u

8 ---------- ----

Sample Interval

Sample Jft) Headspace


0065 4.3 4.9 290 u u 0066 8.8 9.3 1098 u u 0067 14.3 14.6 NA u u

c_


May 1995



UJ UJ UJ UJ 0.45 J 0.13 J u u u

18.6 J 115 J 75J 12.8 J 55 J 34.7 J 9.4 J 52.4J 31.5 J 6.80 65.20 48.40 u 0.71 J u u u u u u u u u u

M,P-Xylene

UJ 2.6 J 3.40 218 J 101 J 91.9 J 161.00 2.6 J

u u u

u u u __ _t.J -I I


Benzene Toluene Ethylbenzene M P-Xylene

u u u u u u u u u 0.03 J 0.21 J 0.60 J

••• "I --, ·--EPA Method

8015

Total TPH i

0-Xylene BTEX (ppm)

UJ UJ ·U 2.7 J 5.88 J >1500 J 2.90 6.30 >900 J 123 J 549.6 J >2000 J 56.2 J 259.7 J >1200 J 52.1 J 237.3J >3300 J 87.30 368.70 >1200 J 1.4 J 4.71 J u

u u 390 J u u u u u u u u u

---

M EPA Method

8015


u u 1461 u u 1678

0.83 J 1.67 2393 -


Interval



0074 4.0 4.7 0.6 u u 0075 9.0 9.5 1.9 u u 0076 13.5 14.0 0.6 u u 0077 19.0 19.4 0.3 u u 0078 23.7 24.4 0.3 u u 0079 26.8 27.6 0.3 u u 0080 33.5 - .. 34.-Q. L__ 0.0 u u


Interval

Sample _(ft) Headspace


0082 3.2 3.7 91 u u 0083 8.4 8.9 210 u u 0084 13.1 13.6 57 u u 0085 19.0 19.3 665 u u 0086 23.6 24.4 560 u u 0087 29.0 29.4 227 u u 0088 33.5 34.4 121 u u 0089 33.5 34.4 121 u u 0135 39_.Q 39.5 NA u u

-- --


May 1995



u u u u u u u u u u u u u u u u u u u L__jJ_ __ ___ U ____ '------

EPA Method 8020 , ; (ppm)


u u u u u u u u u u u u u u 0.03 u u u u u u u u u u u u

M,P-Xylene

u u u u u u u

-----

M,P-Xylene

u u

0.12 1.30 0.29 u u u u


8015

Total TPH 0-Xylene BTEX (ppml

u u u u u u u u u u u u u u u u u u u u u

----


8015


u u u u u u

0.14 0.26 u 1.40 2.70 >2000 J 0.34 0.66 >1500 J u u u u u u u u u I

u u u


Interval



0090 3.2 3.6 0.1 u u 0091 8.6 9.2 0.0 u u 0092 14.0 14.7 0.0 u u 0093 16.7 17.3 0.0 u u 0094 23.8 24.6 0.0 u u 0095 26.3 26.8 0.0 u u 0096 33.9 34.7 0.0 u u 0097 38.9 39.4 0.0 u u 0136 43.0 43.5 0.0 u u 0137 49.0 49.5 NA u u 0138 -~4.0 54.5 NA u u


Interval

Sample {_ftj Headspace


0098 3.5 4.2 0.0 u u 0099 8.4 9.1 0.1 u u 0100 14.0 14.5 0.0 u u 0101 18.8 19.4 0.0 u u 0102 24.0 24.5 0.1 u u 0104 29.0 29.5 NA u u 0105 32.7 33.2 NA u u


May 1995


Benzene Toluene Ethylbenzene 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 u u u u u

I I



u u u u u u u u u u u u u u u u u u u u u

-----

M,P-Xylene u u u u u u u u u u u

M,P-Xylene

u u u u u u u

---

M EPA Method

8015


u u u u u u u u u u u u u u u u u u u u u u u u I

u u u u u u u u u

~----- -----

Mav 25. 1994 -~ r • -

EPA Method

8015


u u u u u u u u u u u u u u u u u u

_LJ- ~ -u u

Borehole 21-3014 ---- ------ ----

Sample

Interval



0160 3.8 4.5 0.0 u u 0161 8.4 9.0 0.0 u u 0162 13.7 14.4 0.0 u u 0163 18.5 19.2 0.0 u u 0164 18.5 19.2 0.0 u u 0165 21.4 22.0 0.0 u u 0168 29.0 29.5 NA u u 0169 31.5 32.0 NA u u


May 1995



u u u u u u u u u u u u u u u u u u u u u u u u

--~----------

I I

M,P-Xylene

u u u u u u u u

M EPA Method

8015 Total TPH

0-Xylene BTEX (ppmJ u u u u u u u u u u u u u u u u u u u u u u u u

Borehole 21-3015 Shallow Borehole A _·r.J · -······----

Sample

Interval

Sample ( f t)

Number From To

0171 3.0 3.5 0172 4.5 5.0 0173 7.0 7.5 0174 8.5 9.0

Borehole 21-3018 Shallow Borehole A -r_· -······-··-

Sample

Interval

Sample ( f tJ Number From

0218 1.5 0219 4.0 0220 6.0 0221 8.0

Borehole 21-3019 Shallow Borehole A - -

Sample

Interval

Sample _Ut) Number From

0223 1.5 0224 4.0 0225 6.0 0226 8.0

To 2.5 4.5 7.0 9.0

To

2.5 5.0 7.0 9.0

lv 1 0 Feet North of Hvd

Heads pace

(ppm) Acetone

NA u NA u NA u NA u

-·- - -- --

SOIL SAMPLE RESULTS {1) DPTANK FARM

May 1995

bon S -- --- -- -.- - - -

EPA Method 8020 {ppm)

MEK Benzene Toluene Ethylbenzene

u u u u u u u u u u u u

_U - - _l..J ... u u - .. --·-- -

lv 20 Feet North of Hvd bon S -------------


Headspace

(ppm) Acetone MEK Benzene Toluene Ethylbenzene

NA u u u u u NA u u u u I I u NA u u u u u NA u u u u u

lv 5 Feet South of Hvd bon S


Headspace

{ppm) Acetone MEK Benzene Toluene Ethylbenzene

NA u u u u u NA u u u u u NA u u u u u NA u u u u u

---

...,_,,-.,., ., ,...,..., .....

EPA Method

8015 Total TPH

M,P-Xylene 0-Xylene BTEX {ppm) u u u 131 u u u 82 u u u 51 u u u u ----

..,_,,_ -, I---EPA Method

8015 Total TPH

M,P-Xylene 0-Xylene BTEX {ppm) u u u 296 u u u u u u u u u u u u

~-··-···-

----- -, . ---EPA Method

8015 Total TPH

M,P-Xylene 0-Xylene BTEX {ppm)

u u u u u u u u u u u u u

·- __ _lJ u u

Surface Soil/Tuff S

Approximate

Sample

Sample Location Headspace

Number I (relative to seep) (ppm) Acetone

0185 250' downstream NA u 0186 250' downstream NA u

MEK

u u


May 1995



u u u u u u

- At Seep (see sample sites 21-3020 at 21-3021 below)

0187 1 00' upstream

Surface Sample Site 21-3020 Samole collected from stream bed

Sample Interval

NA

Sample (ft} Headspace

Number From To (ppm)

0228 0.0 0.4 NA

0229 0.0 0.4 NA

Surface Sample Site 21-3021 llected from stream bed

Sample Interval


Number From To (ppm)

0233 0.0 0.4 NA 0234 0.0 0.4 NA

u u u u u

b line. South bank


Acetone MEK Benzene Toluene Ethylbenzene

u u u u I u u u u u u

----- --' --- ---

b line. North bank


Acetone MEK Benzene Toluene Ethylbenzene

u u u u u u u u u u

--··- .. , . ---EPA Method

8015 Total TPH

M,P-Xylene 0-Xylene BTEX (ppm} u u u u u u u u

u u L ____ u I u

--··- .. , . ---EPA Method

8015 Total TPH

M,P-Xylene 0-Xylene BTEX {pr:>m) u u u >1382 u u u >1796

--··- .. , ·---

EPA Method 8015


u u u >1042 u u u >569

rface Water S ---- -- ~ ~ -

Approximate

Sample

Sample Location Headspace

Number (relative to seep) (ppm) Acetone MEK

0243 250' downstream NA u u 0244 At Seep NA u u 0245 1 00' upstream NA u u

0247* At Seep NA u u


May 1995



u u u u u u u u u u u u

Total

M,P-Xylene 0-Xylene BTEX

u u u u u u u u u u l.}_~ L___

u • Sample 0247 (collected 6/8/95} was collected downgradient of the hydrocarbon seep just after intentionally disturbing the hydrocarbon seep

to produce a visible sheen on the water.

Notes:

(1}

(2}

(3)

(4)

All data is validated.

ppm - parts per million

MEK - Methyl Ethyl Ketone

U - Not detected above the MCAL detection limit.

Note 1 - MCAL detection limits are as follows:

Acetone: 0.2 ppm

MEK: 0.2 ppm

Benzene: 0.05 ppm

Toluene: 0.05 ppm

Ethylbenzene: 0.05 ppm

Xylenes: 0.05 ppm

TPH: 50 ppm

(5}

(6)

(7)

J-Estimated quantities

NA - Not analyzed

UJ-Not detected, but qualified as an estimate.

Note 2 - For investigation purposes, the UST action level for total BTEX is 100 ppm. For remediation purposes, UST

action levels are 50 ppm for total BTEX and 10 ppm for benzene, or 100 ppm for TPH. These remediation action

levels are used at sites contaminated with "highly contaminated" or saturated soils that are

50 feet or less above the seasonal high groundwater level.

--··- ., ·---EPA Method

8015 TPH

(ppm)

u u u u

RF/ Report

ATTACHMENT 8 CORRESPONDENCE

RFI Report for SWMU 21-029 ATT B-1 January 19, 1996


Los Alamos National Laboratory


Mr. Jim Piatt, Chief Surface Water Quality Bureau New Mexico Environment Department 1190, St. Francis Drive Santa Fe, NM 87502

Date: May 19. 1995 In Reply Refer To: ESH-18/WQ&H:95-0252

Mail SlOp: K497 Telephone: (505) 665-1859

SUBJECT: RELEASE OF DIESEL FUEL AT TA-21

Dear Mr. Piatt:

The enclosed data package contains additional information associated with a release of diesel fuel discovered at Solid Waste Management Unit (SWMU) 21-029located at TA-21. The release was verbally reported to your office on May 10, 1995, pursuant_to Section 1-203.A of the New Mexico Water Quality Control Commission Regulations.

This site is currently being investigated pursuant to Module VIII ofthe Laboratory's Resource Conservation and Recovery Act Permit. Additionally, the Water Quality & Hydrology Group (ESH-18) will collect water samples from the ephemeral watercourse adjacent to SWMU 21-029 to determine if contaminants have migrated from the release site.

If you have any questions associated with the attached information regarding SWMU 21-029, please contact me at 665-1859 or Alex Puglisi at 667-4882.

Sincerely,

/?C=--1~ Steve Rae Acting Group Leader Water Quality and Hydrology Group

AP:SR/em

Enclosures: a/s

Cy: G. Saums, NMED, Surface Water Quality Bureau, w/enc. H. Decker, AlP Bureau, w/enc .. MS J993 S. Yanicek, AlP Bureau, w/enc., MS 1993 D. Mcinroy, EMlER w/enc., MS M992 M. Leavitt, NMED, Ground Water Protection and Remediation Bureau, w/enc. B. Koch, DOE/LAAO, w/enc., MS A316 T. Taylor, DOE/LAAO, w/enc., MS A316 WQ&H File, MS K497 CRM-4, MS AlSO

Release Notification DPTankFarm

TA-21, SWMU 21-029

Description of Release: A site investigation at the former DP Tank Farm located at TA-21 has

indicated that contaminants may have migrated to DP Canyon by flow through fractures in the

tuff. Due to the position of a hydrocarbon seep in the DP Canyon drainage, contaminants

migrating to the surface may be impacting water quality in this ephemeral watercourse.

(See attached Technical Memorandum for further information).

Los Alamos National Laboratory NPDES Permit No. NM0028355

Release Notification Form

Responsible Facility/User Group LANL/ER Program Contact Person Alex Puglisi I James Alarid

Phone# 667-4882/ 665-9736 Pager # 699-194 7

Discharge Location: _....!T...:..A~-..=:2'-'-1 "'""S~WM.!.!...;.;!..!o.U~-2~1~-~02"'-'9"--_----------------------

Discharge Occurred: Ongoing Discharge Discovered: See Attached Technical Report date time date time

Discharge Stopped: Ongoing Method: ----------------date time

Corrective Actions, ..... : _ _,S"""e""e'-'A""""'tt""ac,.,h....,ea.d~T~e""c"-!h.llnlli,.,ca~l__.M"'""""e.._.m.._,o<.O.r-""an,_,d...,u,.,.m......._. ---------------------

Nearest watercourse and/or canyon affected: None ___ _ Describe: DP Canyon

Source and cause of discharge: Underground storage tanks and spillage of petroleum products at former fueling area.

Materials Spilled: Diesel. gasoline and other fuel products

Estimate Amount: Unknown

Cleanup Started: Yes No X :nate Time

Cleanup Finished: Yes No X Date Time

Weather Conditions: N/A

*24 Hr. Notification: EPA Person: NIA NMED Person: N. Wells Time: Time: 1520 hr. Date: Date: 5110195

ESH-7 Person: N/A DOE Person: B. Koch Time: Time: 0730 hr. Date: Date: 5/11/95

Written follow-up within 7 days: Date: 5/17/95 Corrective action report within 15 days: Date: 5/17/95 NMED/EPA Approval on file: Date: Pendin2:

Comments: Soil/ substrate samples from seep area in DP Canvon indicate the presence of diesel. Further sampling will be performed on the watercourse.

Release Notification Form Completed By: Alex Puglisi I James Alarid. Water Quality & Hydrologv Group (ESH-18)

Larry D. Kirkman Acting Area Manager Department of Energy Los Alamos Area Office Los Alamos, New Mexico (505) 667-5105

Dennis J. Erickson Division Director, ESH-DO University of California Los Alamos National Laboratory P.O. Box 1663, MS K491 Los Alamos, New Mexico 87545 (505) 667-4218

GARY E. JOHNSON GOVERNOR

State of New Mexico ENVIRONMENT DEPARTMENT

DOE OVERSIGHT BUREAU P.O. Box 1663, MSIJ-993


June 28, 1995

Beverly Martin LANL ER Program MS/E525 Los Alamos, NM 87545

MARK E. WEIDLER SECRETARY

EDGAR T. THORNTON, III DEPUTY SECRETARY

Re: Response to TA-21 site visit concerning TPH/DIESEL contamination of the stream course in DP Canyon.

Ms. Martin:

On May 31, 1995, per your request, AIP personnel accompanied LANL staff.on a sjte visit to TA-21, former underground storage tank faiTQ.: The purpose of this visit was to help answer any questions that LANL staff may have concerning the possibility that hydrocarbons may be discharging along the tuff/channel stream course in DP canyon. After viewing the area of concern, and reviewing existing data a discussion was held concerning this project with NMED Surface Water Quality Bureau staff. SWQB concurred with AlP suggestions that ER staff take several water and soil/rock samples. Sample locations agreed upon were upstream of the seep, at the seep and downstream in order to assess the possible contamination impact on the stream below the release area. Other interested bureaus within the NMED may respond to this separately.

If you have any questions please call me at 672-0459.

Sincerely, Ll ) !) I

(!__"'c.>' '- ~c '/ '- J;k_c l L

Harvey L. Decker Environmental Specialist C NMED\SWQB\AIP

cc: Steve Rae, ES&H 18 Alex Puglisi, ES&H 18 Neil Weber, NMED/DOE Steve Yanicak, NMED/DOE

Glenn Saums, NMED/SWQB Harold Runnels Bldg. 1190 St. Francis Dr. P.O. Box 26110 Santa Fe, NM 87502 (505) 827-2827

Marcy Leavitt, NMED/GWPRB Harold runnels Bldg. 1190 St. Francis Dr. P.O. Box 26110 Santa Fe, NM 87502 (505) 827-2945

Ivan Trujillo, DOE

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