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TABLE 5
<br /> SUMMARY OF GROUNDWATER ANALYTICAL RESULTS(GENERAL MINERALS and TDS)""'
<br /> MOUNTAIN HOUSE DEVELOPMENT SITE#6
<br /> Mountain House,San Joaquin County,California
<br /> Concentrations in m /L unless noted
<br /> Cation-
<br /> Specific Anion
<br /> Boring/Well Collection Date Ammonia Nitrate Nitrite Nitrogen Conductance Total Total Balance
<br /> ID Method Sampled Alkalinity Nitrogen Bicarbonate Boron Calcium Carbonate Chloride IronMagnesium Manganese Nitrogen Nitrogen (Kjeldahl) Potassium Sodium ( mhos/cm) Sulfate Hardness TDS Phosphorus (%Error)
<br /> SCREENING MCL NA NA NA NA NA NA 250 0.3 NA 0.05 10 1 NA NA NA 900,000 250 NA 3,000 6 NA NA
<br /> LEVELS WQO NA 1.5 4 NA 0.6' NA NA 106 6 0.3 4 NA 0.05 4 101 NA NA NA 204 700,0006 104 NA --- NA NA
<br /> SB-20 99W 3/26/2008 335,000 210 335,000 4,660 137,000 <460 684,000 <52.2 76,600 452 12,800 <400 <500 4,640 549,000 3,520 565,000 659,000 2,260 1,300 0.803
<br /> SB-25 99W 3/31/2008 544,444 300 544,000 6,810 134,000 <460 562,000 <52.2 75,800 9.0 13,300 <400 <500 761 674,000 3,840 822,000 648,000 2,560 630 0.450
<br /> SB-42 99W 11/16/2009 414,000 <200 414,000 4,340 127,000 <460 580,000 E <52.2 68,200 1,040 2,700 <400 <500 1,150 557,000 3,290 491,000 598,000 2,190 980 4.081
<br /> FosterWell-1 W 11/18/2009 185,000 <200 185,000 3,740 115,000 <460 688,000 <52.2 94,600 183.0 12,700 <400 <500 996 581,000 3,570 713,000 676,000 2,400 <250 2.022
<br /> Abbreviations:
<br /> CaCO3=Calcium carbonate
<br /> CDPH=California Department of Public Health
<br /> E=Reported value is estimated due to associated quality control results
<br /> EPA=United States Environmental Protection Agency
<br /> ggw=Grab groundwater
<br /> ID=Identification
<br /> MCL= Maximum Contaminant Level
<br /> NA=Not applicable
<br /> RWQCB=Regional Water Quality Control Board
<br /> SAIC=Science Applications International Corporation
<br /> SWRCB=State Water Resources Control Board
<br /> TDS=Total Dissolved Solids
<br /> W=Wellhead Tap
<br /> WQO=Water Quality Objective
<br /> <=Denotes analyte not detected at or above the laboratory reporting limit
<br /> mg/L=Milligrams per liter
<br /> [mhos/cm=Micromhos per centimeter
<br /> ---=Not available
<br /> Notes:
<br /> 1. Samples were collected by SAIC and were analyzed by Lancaster Laboratories,Inc. TDS were analyzed using EPA Method 160.1,sulfate using EPA Method 300.0, chloride using EPA Method 300.0,
<br /> nitrate(as nitrogen)using EPA Method 300.0,nitrite(as nitrogen)using EPA 300.0,specific conductance using EPA 120.1,Kjeldahl nitrogen using EPA 351.2,phosphate using EPA 365.1,
<br /> ammonia(as nitrogen)using 350.2,alkalinity(as CaCC3)using SM 20 2320B,bicarbonate(as CaCO3)using SM 20 2320B,carbonate(as CaCO3)using SM 20 2320B,and hardness(as CaCO3)
<br /> using SM 20 2320B.
<br /> 2. Results in bold exceed WQOs and/or MCLS.
<br /> 3. See Appendix E.1 for data usability summary.
<br /> 4. WQO(Tastes and Odors)that prohibits adverse tastes and odors or nuisance conditions.
<br /> 5. WQO Suggested No Adverse Response Level.
<br /> 6. WQO Agricultural.
<br /> Sources:
<br /> MCLs from EPA(June 2003)and CDPH(February 2009).
<br /> WQOs defined in the Central Valley RWQCB Water Quality Control Plan(Basin Plan)for the Sacramento River Basin and San Joaquin River Basin(Fourth Edition),October 2007.
<br /> WQOs may be stated in either numerical or narrative form. Narrative water quality objectives are interpreted by values
<br /> from SWRCB A Compilation of Water Quality Goals-July 2008.
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