HEALTH CONSULTATION ADDENDUM
BURNING GROUND AREAS AT
WOMPATUCK STATE PARK
HINGHAM, MASSACHUSETTS
TABLE 1
Summary of Sampling Locations and Completed Analysis
November 1997 Sampling Episode
| Location | Sample Number and Media |
Explosives | *SVOCs |
| Mt. Blue Spring | WP100 (water) | x | x |
| Swampy Area (Groundwater Seep) | WP101 (water) | x | x |
| WP111 (sediment) | x | ||
| Second Groundwater Seep | WP110 (sediment) | x | x |
| Pond | WP102 (water) | x | x |
| WP112 (sediment) | x | ||
| Downstream of culvert and pond | WP103 (water) | x | x |
| WP113 ( surface soil) | x | x | |
| Drainage Swale upland of groundwater seeps | WP114 (surface soil) | x | |
| Upland of drain pipe that is upland of groundwater seeps | WP109 (surface soil) | x | |
| Building | WP108 (surface soil) | x | x |
| At periphery of burning ground area 2 | WP106 (surface soil) | x | |
| WP107 (surface soil) | x | x | |
| In burning ground area 2 | WP104 (surface soil) | x | x |
| WP105 (surface soil) | x | ||
| QA/QC sample | WP115 | x |
*SVOC= Semivolative Organic Compound
TABLE 2
Summary of Analytical Results for On-Site Surface
Soil Samples Wp108
November 1997 Sampling Episode
| Compound | Concentration and Qualifiers1 (mg/kg) |
Detection Level | Soil Screening Value (Industrial)2 |
| Acenaphthylene | 0.48L | 2.2 | 78003 |
| Anthracene | 0.95L | 2.2 | 610,000 |
| Benz[a]anthracene | 1.4L | 2.2 | 7.8 |
| Benzo[b]fluoranthene | 4.5 | 2.2 | 7.8 |
| Benzo[k]fluoranthene | 1.5L | 2.2 | 78 |
| Benzo[a]pyrene | 1.2L | 2.2 | 0.78 |
| Benzo(ghi)perylene | 1.1L | 2.2 | 7803 |
| Bis (2-ethylhexyl) phthalate |
1.6L,B | 2.2 | 410 |
| Carbozole | 1.0L | 2.2 | 290 |
| Chrysene | 4.2 | 2.2 | 780 |
| Fluoranthene | 6.6 | 2.2 | 82000 |
| Indeno(1,2,3-cd)pyrene | 1.3L | 2.2 | 7.8 |
| Phenanthrene | 1.7L | 2.2 | 78003 |
| Phyrene | 4.7 | 2.2 | 61,000 |
| 9,10-Anthracenedione | 1.6J | -- | Not Available4 |
| 1- | B- Compound has been found in the lab or trip blank.
L- Estimated value is below the calibration range. J - Estimated value. |
| 2- | Source:US. EPA Region 3 Risk Based Concentration Values. These screening values are based on 30 years of exposure 250 days per year. Actual exposure is greatly reduced due to restricted access. |
| 3- | Values inferred from PAH toxicity equivalency factors (ATSDR 1995). |
| 4- | See text for evaluation. |
TABLE 3
Summary of Analytical Results for Soil Samples
Other than Wp108
November 1997 Sampling Episode
| Sample Number |
Bis (2-ethylhexyl) phthalate (mg/kg) |
Benzeneacetic acid (mg/kg) |
| WP104 WP107 WP110 WP113 |
1.4LB 1.5LB 4.0LB 1.1LB |
-- -- -- 12J |
| Screening Values1 |
410. Industrial Soils |
Not Available2 |
1- Source:US. EPA Region 3 Risk Based Concentration Values
2- See
text for evaluation.
TABLE 4
Summary of Analytical Results for Water Samples
November 1997 Sampling Episode
| Compound | Detection Level | Concentrations and Qualifiers (ug/L) |
Tap Water Screening Values1 (µg/L) |
|||
| WP100 | WP101 | WP102 | WP103 | |||
|
Bis (2-ethylhexyl) |
6.2 | 4L,B | 5LB | 5LB | 33B | 4.8 |
| Dibutyl phthalate | 6.2 | 1L | 2L | ND* | ND | 3,700 |
| Diehtylphthatalate | 6.2 | ND | 5LB | ND | ND | 29,000 |
| Fluoranthene | 6.2 | ND | 1L | ND | ND | 1,500 |
| Hexachlorobenzene | 6.2 | ND | 2L | ND | ND | MCL†=1µg/L |
| Benzeneacetic acid | -- | -- | 5J | -- | -- | -- |
| 1,1'-sulfonylbis-4- chlorobenzene |
24 J | -- | -- | -- | -- | |
| Carbethoxyethylidine triphenylphosphorane |
12J | -- | 6J | -- | -- | |
1- Source:US. EPA Region 3 Risk Based Concentration Values
† MCL = Maximum Contaminant Level
*ND
= Not Detected
