PUBLIC HEALTH ASSESSMENT
CAL WEST METALS (USSBA)
LEMITAR, SOCORRO COUNTY, NEW MEXICO
| Lemitar Area | Socorro County | |
|---|---|---|
| Households*Persons perhousehold | 76 2.65 | 5,217 2.75 |
| % Households owner-occupiedHouseholds renter-occupied | 81.6
| 68.7
|
| % Persons in group quarters | 0.0 | 2.9 |
| Mean value, owner-occupied households, $ Mean rent paid, | 53,460
| 56,800
|
* A household is an occupied housing unit, but does not include group quarters such as military barracks, prisons, and college dormitories.
Source: 1990 Census of Population and Housing, Summary Tape File 1B Extract on CD-ROM(New Mexico) [machine-readable data files]. Prepared by the Bureau of the Census. Washington, DC: The Bureau [producer and distributor], 1991.
| Lemitar Area | Socorro County | |
|---|---|---|
| Total persons | 201 | 14,764 |
| % White % Black % American Indian, % Asian or Pacific % Other races | 98.5 0.5 0.0 0.0 1.0 | 77.4 0.8 10.1 1.4 10.3 |
| % Hispanic origin | 65.7 | 47.8 |
| % Under age 18% Age 65 and older | 27.9 13.9 | 30.3 10.4 |
Source: 1990 Census of Population and Housing, Summary Tape File 1B Extract on CD-ROM(New Mexico) [machine-readable data files]. Prepared by the Bureau of the Census. Washington, DC: The Bureau [producer and distributor], 1991.
| Contaminant | Surfacesoil | Sediments | Comparison values | |||
|---|---|---|---|---|---|---|
| Batteryandsludge | Pond | Trench | Concentration | References | ||
| Metals (ppm) | ||||||
| Antimony | 101 | 1160 | 581 | NA | 300 | RMEG |
| Arsenic | 32 | 240 | 250 | 704 | 200 | RMEG |
| Lead | 7690 | 836,000 | 421,000 | 51,100 | NA | |
| Semi-volatile organic compounds (ppm) | ||||||
| Benz(a)anthracene | ND | 4.8 | ND | NA | NA | |
| Benzo(a)pyrene | ND | 2.8 | ND | NA | NA | |
| Benzo(b)fluoranthene | ND | 4.7 | ND | NA | NA | |
- NA - Not Available
ND - Not Detected
| Pathwayname | Time | ||||||
|---|---|---|---|---|---|---|---|
| SourceCOCs | Media | Pointofexposure | Routeofexposure | Exposedpopulation | |||
| Trespassing | On-sitewastepiles,metals,PAHs,chemicals inbuildings | On-sitemetals | Wastepiles,ponds,surfacesoils | Directcontactwithcontami-natedmedia | Dermal,inhalation,ingestion | Trespassers | Past,present,andfuture |
| Laboratorychemicals | Chemicals inbuilding | ||||||
| Off-sitesurfacesoils | Lead | Surface soil,off-site sedimentsin drainage | Drainareas ofarroyos,surfacesoilsoff-site | Dermal,inhalation, andingestion | Residentsof thearea,especiallychildrenplayingin thesoil | Past,present,andfuture | |
FIGURES
FIGURE 1: LOCATIONS OF SOCORRO COUNTY,
NEW MEXICO AND THE CAL-WEST METALS SITE.
FIGURE 2: CAL-WEST MONITORING WELL LOCATIONS
FIGURE 3: GRID LAYOUT AND FPXRF LOCATIONS
FIGURE 4: CAL-WEST LEAD CONCENTRATION ISOPLETHS (PPM)
FIGURE 5: DRAINAGE PATHWAYS SAMPLE LOCATIONS
FIGURE 6: LOCATIONS OF DOMESTIC WELLS SAMPLED
DURING THE PHASE II FIELD INVESTIGATION
