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TABLE 6
<br /> SUMMARY OF GROUNDWATER ANALYTICAL RESULTS(GENERAL MINERALS)t,zs
<br /> MOUNTAIN HOUSE DEVELOPMENT SITE#6
<br /> Mountain House,San Joaquin County,California
<br /> Concentrations in pg/L unless noted
<br /> Specific Total Total Cation-Anion
<br /> Collection Date Alkalinity to Alkalinity to Ammonia Bicarbonate Carbonate Nitrate Nitrite Nitrogen Conductance Total Dissolved Hardness as Phosphorus Balance
<br /> Boring ID Method Sampled pH 4.5 pH 8.3 Nitrogen Alkalinity Boron Calcium Alkalinity Chloride Iron Magnesium Manganese Nitrogen Nitrogen (Kjeldahl) Potassium Sodium (µmhos/cm) Sulfate Solids(mg/kg) CaCO3 as PO4 (%Error)
<br /> SCREENING MCL NA NA NA NA NA NA NA 250,000 300 NA 50 10,000 1,000 NA NA NA 900,000 250,000 NA NA NA NA
<br /> LEVELS WQO NA NA 1,5004 NA 600 5 NA NA 106,000 6 3004 NA 50° 10,0001 NA NA NA 20,000° 700,0006 10,0004 3,000 NA NA NA
<br /> SB-20 G 1 3/26/2008 1 335,000 <460 210 335,000 4,660 1 137,000 <460 684,000 1 <52.2 1 76,600 452 1 12,800 1 <400 1 <500 4,640 549,000 1 3,520 1 565,000 1 2,260 1 659,000 1,300 0.803
<br /> SB-25 I G 1 3/31/2008 1 544,4441 <4601 300 1 544,0001 6,810 1 134,0001 <4601 562,000 1 <52.2 1 75,8001 9.0 1 13,300 1 <400 1 <5001 7611 674,000 1 3,840 1 822,000 1 2,560 1 648,0001 6301 0.450
<br /> Abbreviations:
<br /> <=Denotes analyte not detected at or above the laboratory reporting limit
<br /> CDHS=California Department of Health Services
<br /> EPA=U.S.Environmental Protection Agency
<br /> G=Grab groundwater sample
<br /> ID=Identification
<br /> MCL= Maximum Contaminant Level
<br /> MUN=Designates municipal and domestic water supply
<br /> NA=Not applicable
<br /> RWQCB=Regional Water Quality Control Board
<br /> SAIC=Science Applications International Corporation
<br /> TDS=Total dissolved solids
<br /> pg/L=Micrograms per liter
<br /> µmhos/cm=Micromhos per centimeter
<br /> WQO=Water Quality Objective
<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 CaCO3)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. Criterion promulgated under State Water Resources Control Board Resolution No.88-63 for beneficial use designation of MUN; incorporated in the Basin Plan by reference(see source below).
<br /> 2. Results in bold exceed WQOs and/or MCLS.
<br /> 3. See Appendix E.1 for data validation results.
<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 /> Source:
<br /> MCLs from EPA(June 2003)and CDHS(October 2002).
<br /> WQOs from the Central Valley RWQCB Water Quality Control Plan(Basin Plan)for the Sacramento River Basin and the San Joaquin River Basin,4th ed.(revised August 2006).
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