OCWD Management Area
Table 11-2: Baseline Future Nitrate (as N) Inflows
Volume (Acre-Feet/yr)
Nitrate-N Conc.(mg/L)
Mass (tons/yr)
Inflow
Deep percolation of precipitation*
6,500
1
9
Percolation of applied water*
9,000
10
122
SAR base flow
52,000
3.6
255
SAR storm flow
50,000
1.3
88
Imported water recharge
0
0
0
Recycled water recharge (GWRS)
133,000
1.0
181
Subsurface inflow*
44,500
4.2
253
Alamitos Barrier
2,000
1.4
4
Total
297,000
2.3
657
* component of unmeasured recharge
11.2 GROUNDWATER QUALITY IMPROVEMENT PROJECTS
This section describes specific projects that improve groundwater quality by removing TDS, nitrate, VOCs and other constituents, including PFAS. The locations of these projects, except for PFAS, are shown in Figure 11-2. PFAS projects are located at specific groundwater producer wells.
BASIN 8-1 ALTERNATIVE 2022 UPDATE
Sustainable Management: Water Quality 11-1
Appendix F - 167
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