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In November 1998, CDHS sent a public comment draft of the Union Pacific Public HealthAssessment to representatives of three neighborhood associations: the Sierra CurtisNeighborhood Association, the Western Pacific Neighborhood Association, and the Land ParkCommunity Association. In addition, a copy of the draft report was sent the stateassemblywomen, and two city council members who represent areas around the Union Pacificsite. A copy was also sent to the Department of Toxic Substances Control (DTSC). We askedfor comment on the draft to be submitted by December 15, 1998.

We received comment from the DTSC and from the Land Park Community Association. The DTSC found two typographical errors, which we corrected.

The representative of the Land Park Community Association submitted the following comment:

"We could not determine, if you are aware that some of groundwater pumped fro irrigation, is for parks. The City of Sacramento pumps groundwater from wells in William Park for irrigation and possibly for other park uses. It may pump and use groundwater pump in other parks. We have observed what appears to be a groundwater pump located near the tennis courts in William Curtis Park, very close to where you say (on page 8) the "largest plume" of contaminated groundwater is located. Please investigate the city's use of groundwater in parks." The letter also included a contact person at park program with the City of Sacramento.

CDHS Response: We contacted the City of Sacramento to investigate the use of well water in Curtis Park. According to the staff person with whom we talked, Curtis Park is irrigated with water from the City of Sacramento water system and not by the well that is located in the park. The drinking water available in the park is also from the City of Sacramento water system. According to the staff person, the well that is located on-site is not operational.


Figure1: City of Sacremento Water District
Figure1: City of Sacremento Water District

Figure 2: Union Pacific Railroad Yard
Figure 2: Union Pacific Railroad Yard


Table 1: Off-site surface soil sampling on the western side of the Union Pacific Site

Sampling Location Number of
Average (Range)
Averange (Range)1
Lot 1 6 compoites 239 (41-537) 58 (6-95)
Lot 2 8 101 (14-333) 11 (nd-37.6)
Lot 3 6 109 (4.3-299) 50 (2.7-135)
Lot 4 6 51 (23.0-76.8) 3.8 (2.7-4.6)
2206 6th Avenue 12 140 (5.3-614) 56 (1.9-222)
2207 7th Avenue 8 166 (54.6-320) 14 (5.7-30.0)
2212 7th Avenue 10 49 (11.4-76.0) 5.8 (2.8-11.6)
Background Concentrations 9 22 (7.80-30) 8 (6.36-8.36)
Screening Levels - 130/4402 200/20/0.6/0.53

1. Soil Concentrations expressed in parts per million (ppm)
2. 1st value is California's Preliminary Remediation Goal (PRG) and the second value is USEPA's PRG.
3. ATSDR's health comparison values (EMEGs): Non-cancer for child/Non-cancerfor a pica child/Cancer.

Table 2. Completed Exposure Pathway at the Union Pacific Site

Source Environmental Media Point of Exposure Route of Exposure Exposed Population Time
Union Pacific site Surface Soil Residence at 2206th 6th Avenue Ingestion Residents Past

Table 3. Potiential Exposure Pathways at the Union Pacific Site

Source Environmental Media Point of Exposure Route of Exposure Exposed Population Time
Union Pacific site Fugitive dust/particulate in air Yards and homes nearby and downwind of site Inhalation Residents
Off-site workers

Table of Contents The U.S. Government's Official Web PortalDepartment of Health and Human Services
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Contact CDC: 800-232-4636 / TTY: 888-232-6348

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