1977 Reference Survey Report Sediment Chemistry

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
Southern California Coastal Water Research Project(SCCWRP)
Publication_Date: 20000801
Publication_Time: 20000402
Title: 1977 Reference Survey Report Sediment Chemistry
Edition: 1.0
Publication_Information:
Publication_Place: Costa Mesa, California
Publisher:
Southern California Coastal Water Research Project(SCCWRP)
Online_Linkage:
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Description:
Abstract:
All wastewater monitoring programs assess theenvironmental situation in the discharge area bycomparing it to the situation where there is nodischarge. Thus the selection of the referenceor control stations is of critical importance inevaluating effects: Control stations must be assimilar as possible to the area being studiedexcept that they are not exposed to outfallmaterials. The Project has encountered theproblem of selecting proper control sites indesigning its surveys of southern Californiadischarge areas. We considered using sites offthe Channel Islands but rejected them because theyare not oceanographically or biologicallycomparable to mainland sites. We also looked atdata from the control sites used in the past byvarious dischargers and found that some of thesewere in areas influenced' by the outfalls beinginvestigated and consequently gave invalidreference information. In some monitoringsurveys, a single reference station and a singleset of measurements have been used as the basisfor determining the natural or backgroundconditions for an outfall site. Yet carefulanalysis of many samples reveals that chemical andbiological conditions vary with water depth andtype of bottom material and can differ by as muchas a factor of 10, even in areas not influenced byman. Plainly, no single control station or set ofmeasurements is valid for reference purposes.Numerous benthic monitoring surveys, designed toassess the effects of existing or futuredischarges, have been taken on the southernCalifornia mainland shelf since 1956. While suchsurveys have provided much new information on theabundance and diversity of thousands of species ofbottom organisms and fishes, and on the levels ofpollutants in sediments around outfalls, few haveprovided a data base that would permit theidentification of control sites, or areas wherebackground conditions exist. An outstandingexception is the mainland shelf survey produced bythe California State Water Resources Control Boardand conducted some 20 years ago by the AllanHancock Foundation, University of SouthernCalifornia (California State Water ResourcesControl Board 1967; Jones 1969). That surveyprovided useful information on conditions at thattime; however, we do not know if the results arerepresentative today. Moreover, the previoussurvey did not provide data on sediment pollutantconcentrations or trawl-caught fish andinvertebrate populations--two types of informationthat are needed at present, particularly for ruralareas of this coast. Accordingly, in 1977, theCoastal Water Research Project sponsored a newsurvey of the mainland shelf from Point Conceptionto the United States/Mexico border. The goal ofthe survey was to identify possible control areasfor contrasting with existing municipal wastewaterdischarge sites and to define the apparent normalvariations in the chemistry and biology of thefine sediment areas covering much of the mainlandshelf.
Purpose:
We now believe we have identified 29 locations,the combined information from which can be used ascontrol data for one depth--60 meters. We chose tolimit this survey to the single depth because thisis the depth of discharge of the largest municipalwastewater treatment plants along the coast -andbecause discharged materials tend to drift alongdepth contours. Details on the methods andresults of the survey are given in the followingsections.
Supplemental_Information:
Grabs, Trawls, and Water Quality casts wereconducted at each of the stations to yield Benthicinfauna, Sediment Chemistry, Trawl Fish, MacroInvertebrate, water column characterization at onemeter increments from surface to bottom, andsediment grain size data. These data types can beaggregated using the StationID variable in eachtable. Between 28 April and 9 August 1977, 70benthic grab samples and 53 trawl samples weretaken at 71 stations between Point Conception andthe U.S./Mexico border. The stations were locatedat intervals of approximately 10 km along the 360km of coastline at depths of approximately 60meters. In certain areas near the major municipalwastewater outfalls, stations were more closelyspaced to delineate the expected outfall effects.Station locations are given in tblStations.Position on station was determined through thecombined use of dead reckoning, sightings offheadlands, radar fixes, and depth measurementsfrom a recording fathometer. We have estimatedthat the inaccuracy of positioning do not exceed100 meters. The vessels used during the survey areas follows: 1. M/V Marine Surveyor, Los AngelesCity, John Keller, Skipper. 2. M/V Fury II, OrangeCounty Department of Education, John Haas,Skipper~ 3. M/V Monitor II, San Diego City, SusanHamilton, director of collecting efforts. 4. M/VEnchanter IV, Fred Munson, Owner/Operator. 5. R/VSea-S-Dee, Los Angeles County SanitationDistricts, Rusty Shields, Skipper. 6. R/V VanTuna, Occidental College, Elden McAllicher,Operator.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19770801
Ending_Date: 19770831
Currentness_Reference: ground condition
Status:
Progress: COMPLETE
Maintenance_and_Update_Frequency: None Planned
Spatial_Domain:
Description_of_Geographic_Extent: Southern California Bight
Bounding_Coordinates:
West_Bounding_Coordinate: -120.4458
East_Bounding_Coordinate: -117.265
North_Bounding_Coordinate: 34.44111
South_Bounding_Coordinate: 32.55833
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Sediment Chemistry
Theme_Keyword: PCB
Theme_Keyword: Metal
Access_Constraints: None
Use_Constraints: None
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Information Systems Manager or Information Manager
Contact_Address:
Address_Type: physical address
Address: 3535 Harbor Blvd., Suite 110
City: Costa Mesa
State_or_Province: California
Postal_Code: 92626
Country: USA
Contact_Voice_Telephone: 714.755.3200
Contact_Facsimile_Telephone: 714.438.1016
Contact_Electronic_Mail_Address: im_contact@sccwrp.org
Hours_of_Service: 8:00 a.m. to 4:00 p.m. Monday Through Friday
Contact_Instructions: email preferred
Data_Set_Credit: SCCWRP
Native_Data_Set_Environment: Microsoft Access Version 2000

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: Coordinates accurate to within 100 ft
Logical_Consistency_Report:
The tables may be related by the StationID fieldor the SampleID field where applicable.
Completeness_Report:
No records for the following stations StationIDR24-60 R34-60 R40-60 R65-60 R66-60 R67-60
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The station locations were determined using a handheld Magellan GPS and are accurate with in aradius of 100 ft
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: The depths expressed are accurate to 0.1 meters.
Lineage:
Methodology:
Methodology_Type: Field
Methodology_Description:
A single Van Veen grab sample was collected ateach station and subsampled aboard ship at depthsof 2 and 5 cm for various physical and chemicalanalyses. Three subsamples were collected fromeach depth in plastic containers for lateranalysis of trace metals content, physicalcharacteristics, and content of organic material.One subsample was taken in a foil-capped glasscontainer at each depth for later analysis forchlorinated hydrocarbons. All samples werequickly frozen on dry ice at sea; they were thenreturned to the laboratory and stored in freezersuntil they could be analyzed.
Methodology_Type: Lab
Methodology_Description:
The percent volatile solids in the upper 2 and 5cm of sediments at a station was determined byanalyzing well-mixed and pestle-ground sedimentsfrom a single subsample from each depth. Any largeor conspicuous animal and shell fragments wereremoved from the samples prior to testing. Thevalues for the two depths were compared, and adecision was made to use the 2-cm samples for theremaining physical/chemical analyses. All theremaining physical and chemical parameters, exceptchlorinated hydrocarbon content and sediment grainsize, were determined by analysis of a single,well-mixed subsample with conspicuous animals andshell debris removed. This subsample came fromone of the upper 2-cm samples from the grab. Allthe remaining subsamples were archived for futureresearch. Chlorinated hydrocarbons were measuredon the 2-cm sample retained in a foil-capped glasscontainer. The sediment grain size determinationswere made on an aliquot of the samples taken priorto mixing and grinding. Analytical procedures aredescribed in the following subsections, which werewritten by the individuals responsible for theanalyses. Trace Metal Analysis (Tsu-Kai Jan).Sediment samples were analyzed for silver,cadmium, chromium, copper, nickel, lead, and zinc.A wet-acid method was used to digest the samples.This moderate digestion procedure extracts mostof the metals usually considered to bebiologically available, such as those associatedwith organic matter and sulfides and oxides andthose adsorbed on the surface of solids. Metalsassociated with the silicate minerals (part of thelithogenous fraction) essentially are notbiologically available and are not extracted bythis procedure. To prepare samples, approximately0.5 to 2.0 grams of well-mixed sediment areweighed into a glass-covered, 150-ml beaker anddried in an electric oven at 750C for 48 hours. Anitric acid solution (20 ml of 1:1) is added tothe dried samples, which are then digested on ahotplate until only about 3 ml of liquid remains;this procedure is then repeated. Then 20 ml ofdistilled deionized water and 2 ml of concentratedhydrochloric acid are added, and the mixture isboiled for 20 minutes. The mixture is thenfiltered through an acid-washed Whatman No. 40filter paper (8-micron pore size), and theresulting filtrate is diluted with distilled,deionized water to 50 ml. Analytical blanks areprepared along with the sediment samples, usingthe same procedures and reagents. Samples areanalyzed on a Varian-Techtron atomic absorptionspectrophotometer (Model AA-6) equipped with asimultaneous background corrector (Model BC-6) , apremix type of burner, and a carbon-rod atomizer(Model 63). When a sample has a relatively highmetals content, the diluted filtrate is aspiratedinto an air/acetylene flame. The concentrationsof trace metals are then determined by comparingthe results against known standards. A previousstudy of matrix interferences in flame atomicabsorption revealed no significant interferencesin detection of the seven elements in question,given a sample size of up to 2 grams. Thedetection limits for the metals using this methodare as follows: Metal(mg/g) Silver 0.8Nickel 1.8 Cadmium 0.4 Lead 3.0Chromium 1.5 Zinc 0.3 Copper 1.4If a metal is present in concentrations below theflame detection limit, a flameless method must beused in the analysis; with the flamelessprocedure, 2.5 ml of treated solution are injectedinto a graphite furnace. The silver, cadmium, andlead concentrations in a small number of samplesfrom this survey were determined using thismethod. Matrix interferences are checked, andcompensations are made by running separate spikedsamples. The detection limits for silver,cadmium, and lead with the flameless method are7.0, 3.0, and 33 ng/gram, respectively. Theconditions of the spectro-photometer during theanalyses described here are given in Table 5. Allreagents are analytical reagent-grade, the wateris deionized and distilled, and all standards areprepared by the dilution of 1,000-ppm stocksolutions. The glassware and plastic containersare cleaned by being soaked in 6 percent nitricacid solution for more than 24 hours and thenrinsed in distilled, deionized water.Chlorinated Hydrocarbon Analysis (TheadoreHeesen). Hexane extraction and Florisil columnclean-up procedures were used during this study toproduce samples for pesticide analysis; anadditional saponification step was used to producea sample for PCB analysis. The sediment samplesare first dried in an electric oven at 600C for 24hours. Then 20 to 40 grams of sediment areweighed into a cellulose Soxhlet thimble. TheSoxhlet extraction apparatus is charged with 250ml of hexane and mixed thoroughly for a period of18 hours; the extract is then reduced in volume toabout 25 ml using a rotary evaporator. Florisil(MCB FX284) that had been activated 1 for 4 hoursat 7000C and stored under hexane is used forclean-up purposes. A glass column (22 mm, IC)with a fritted glass plug is filled to a height of7.6 cm with the Florisil slurry, and the slurry iscovered with 1.3 cm of granular anhydrous sodiumsulfate. About 40 ml of sample are then placed onthe Florisil column and eluted with 45 ml of 6percent (volumel volume) diethyl ether in hexane.At this point, a part of the extract is set asidefor pesticide analysis. One-halfof the sampleextract is placed in an Erlenmeyer flask with 50ml of a saponification mixture made by placing 5grams of KOH dissolved in a slight amount of waterand then diluting the mixture to 50 ml withethanol. A three-ball Snyder condenser is placedon the flask, and the mixture is refluxed for 30minutes on a steam table. The mixture is thenplaced in a separatory funnel with 50 ml of hexaneand 100 ml of deionized water and shaken for 5minutes. The hexane portion is washed twice morewith two separate l00-ml portions of deionizedwater. This extract is then analyzed for PCB' 5.The sample extracts are injected into a TracorMT 220 gas chromatograph equipped with nickel-63detectors. The column is 2 mm, ID, by 1.8 metersand is packed with 1.5 percent Ov-17 and1.95 Percent QF-l on Gas Chrom Q (Applied ScienceLaboratories, State College, Penn.). Thestandards (obtained from the U.S. EnvironmentalProtection Agency, Research Triangle Park, N.C.)are injected into the gas chromatograph.Compounds are then identified by comparingretention times, and concentrations are derived bymeasuring peak heights. All solvents are pesticidegrade, and blanks are analyzed with each set ofsamples. All glassware is kiln-cleaned at 5400Cfor 12 a period of 4 hours. BiochemicalOxygen Demand Analysis (Henry Schafer). Thebiochemical oxygen demand (BOD) of sediments isthe portion of organic material that is presentand readily available to meet the metabolic needsof aerobic microorganisms. In this study1 BOD wasdetermined by measuring the amount of oxygen usedover a set period of time by a population ofmicroorganisms added to a certain quantity ofsediment and maintained under controlledconditions. It is not a direct measure of theamount of oxygen that would be used in the fieldbecause it does not account for nor test therequirements of the typical fauna that would bepresent in the sediments. A seeding solution(microorganism culture) is prepared by mixingmarine sediments and digested sludge in 2 litersof oxygen-saturated seawater maintained at 200C.This mixture is then aerated for a period of atleast 1 week prior to being used. A sedimentsample (0.2 to 2 grams) is weighed and placed intoa BOD bottle. Oxygen-saturated seawater is thensiphoned into the bottle until it is full; care istaken not to introduce air bubbles or leave aspace at the top of the bottle. Then 1 ml of theseed culture supernatant is added to the bottle,and it is capped with a ground glass stopper,creating a water seal. These same procedures areused to prepare blanks. The bottle are thenagitated for 10 seconds, or until the sediment iscompletely suspended, and placed in a darkenedarea and maintained at 200C. After an incubationperiod of 5 days, during which the bottles areagitated daily to resuspend sediments, theremaining concentration of dissolved oxygen in theblanks and test bottles is measured by the AzideModification of the Winkler iodometric techniquesfor measuring dissolved oxygen (Standard Methods1976). The 5-day BOD (milligrams of oxygenused per kilogram of sediments) for each sample isthen calculated, using the formula: BOD5 = (a- b)0.3 x 1,000, c where a = the dissolvedoxygen concentration of the blank, b =thedissolved oxygen concentration in the test bottle,and c =the grams of sediment added to thetest bottle, 0.3 liters being the size of thebottle. Chemical Oxygen Demand Analysis(Henry Schafer). The chemical oxygen demand (COD)of sediments is the portion of organic matter thatis susceptible to a strong chemical oxidant.While most of the oxygen-demanding substancesaffected are immediately biologically available,(e.g., acetic acid), others (e.g., cellulose) arenot part of the immediate biochemical load on theavailable oxygen. To begin the COD analysis, anamount of sediment (0.1 to 2 grams, depending onits organic content) is weighed and placed in a250-ml Erlenmeyer flask. Then 20 ml of 0.25 Npotassium dichromate solution, 200 ng of mercuricsulfate, and 20 ml of a concentrated silversulfate/sulfuric acid solution (22 grams of AgSO4to a 9-pound (4.09 kg) bottle of H2504) are added;silver sulfate is added to the sulfuric acid as acatalyst for the oxidation of the straight chain(aliphatic) alcohols and acids. The chemicals areswirled in the flask until mixed; the flask isthen attached to the condensers, and the mixtureis gently boiled for 120 minutes. The condenseris then rinsed out and into the flask withdeionized water. After the flask has been removedfrom the hotplate and allowed to cool, the sampleis diluted with deionized water to 150 ml, andthree drops of the ferroin indicator are added(1.485 grams 1,10-phenanthroline monohydrate and695 mg FeSO4.7H20 diluted in deionized water to100 ml). This final sample is then titrated witha ferrous ammonium sulfate solution (39 gramsFe(NH4)2-(S04)2.6H20 in deionized water and 20 mlof concentrated H2S041 cooled and then diluted to1,000 ml with deionized water) until areddish-brown color first appears. The COD(milligrams of oxygen used per kilogram ofsediment) is then calculated as follows: COD= (a - b)N x8,000, where N =(0.25 xK2Cs2O7) divided by the amount of ferrous ammoniumsulfate (FAS) added to the sample, a = theamount of FAS used by the blank, b = theamount of FAS used to titrate the sample, andc = the weight of the sample. Determinationof Percent Volatile Solids (Henry Schafer). Thisis a method for determining, by weight, the amountof organic material present in sediments ratherthan the oxygen-demanding potential of thosesediments. All materials that will combust at5500C are defined as volatile. As even portionsof crude oil will combust at this temperature, notall of the materials that combust are necessarilybiological available organic foods. The procedureconsists of placing approximately 4 ml of sedimentin a previously weighed beaker and determining thewet weight of the sediment. The sample is thenplaced in an electric drying oven at 1050C for 24hours to drive off all liquids. The sample isretained in a desiccator until cooled, so that itwill not rehydrate; its dry weight is thendetermined. The sample is then placed for 1 hourin a muffle furnace at 5500C. After the samplehas cooled in the desiccator, the net ash-freeweight is determined. The formula for calculatingpercent volatile solids is as follows: a-b% volatile solids = a x 100, where a is thedry weight of the sample and b is the ash weight.Organic Nitrogen Analysis (Henry Schafer). Inthe presence of the digestion reagents (H2504,K2S04, H20), the amino nitrogen compounds of manyorganic nitrogen-containing materials areconverted to ammonium sulfate, which is thendecomposed by sodium thiosulfate; the resultingammonia is released by distillation from analkaline medium and absorbed in boric acid. Theammonia in this liquid is then measured bytitration, and the concentration of organic aminonitrogens in the sample is determined. A sampleof dried sediment (.0.1 to 3 grams) is placed inan 800-ml Kjeldahl flask with 400 ml of distilledwater neutralized to a pH of 7 with lN NaOH or lNH2SOA. To this solution, 24 ml of the phosphatebuffer (.14.3 grams H2PO4, 68.8 grams KHPO4, and 1liter ammonia-free water at pH 7.4) and severalboiling chips are added. This container isconnected to one end of the distilling apparatuswhile a 500-ml Erlenmeyer flask containing 50 mlof the boric-acid-indicating solution (60 gramsboric acid, 3 liters of ammonia-free distilledwater, 20 ml methyl red solution (0.4 grams methylred and 200 ml reagent alcohol), and 10 mlmethylene blue solution (.0.2 grams methylene blueand 100 ml reagent alcohol) is placed on thereceiving end of the condenser with its tipextending below the surface of the solution.Distillation is continued with this apparatusuntil 200 to 300 ml of the distillate is collectedin the Erlenmeyer flask. The delivery tube isthen removed from the distillate, but distillationis allowed to continue for a few moments tocleanse the condenser and delivery tube. A blankis also distilled using the same procedures. Thesamples are then titrated with 0.02 N H2SO4until a pale lavender color is obtained. Theamount of amino nitrogens contained in the sampleis then determined by the calculation, NH3-N- (a - b)c x 14,000 d where a = theamount of N H2S04 added to the sample, b =the amount of N H2S04 added to the blank, c =the normality of the H2S04, and d = Theweight of the sample. Hexane ExtractableMaterial Analysis (Henry Schafer). By definition,this extraction procedure recovers materialscalled grease and oil, including lipids,chlorinated hydrocarbons, fatty acids, soaps,fats, waxes, and any other material that issoluble in hexane. All of these materials arefairly resistant to anaerobic digestion and, whendischarged into the sea, often end up as films onthe water surface. However, some of this materialbecomes associated with organic particles and isincorporated. into the sediments. The amount ofthis material in a benthic sediment sample istherefore another indirect measure of the amountof organic particulates associated with thesediments. To prepare the sample, 30 to 40 gramsof sediment are dried at l050C for 16 hours andthen placed in an extraction thimble, which isthen put into the extraction tube. Then, 200 mlof hexane (spectra grade) are placed in anErlenmeyer flask, and the flask is connected tothe condenser and extracting tube. The heatingmantle is regulated so that the extraction cycleoccurs once every 10 minutes for a period of 4hours. At the end of the extraction, the hexaneis removed using a rotary evaporator, and theremaining hexane is drained from theextraction/condenser apparatus into the Erlenmeyerflask. The material remaining in the flask,representing the hexane extractable material(HEM), is weighed after the flask is carefullywiped dry and placed in a desiccator. The amountof HEM is then determined as follows: HEM =a-b where a = the weight of the flaskand its contents, b = the weight of the flaskalone, and c = the weight of the sample.
Process_Step:
Process_Description: QA Check Performed
Process_Date: 20000807

Spatial_Data_Organization_Information:

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodedic Reference System 80
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio:
298.2574.2.2.1 Depth Datum Name:

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Entity_Type_Definition: Table
Entity_Type_Definition_Source: 1977 Reference Survey Report
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Attribute_Definition:
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Attribute_Definition_Source: 1977 Reference Survey Report
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Entity_Type_Definition: Table
Entity_Type_Definition_Source: 1977 Reference Survey Report
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Attribute_Definition_Source: 1977 Reference Survey Report
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Entity_Type_Definition_Source: 1977 Reference Survey Report
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Attribute_Definition_Source: 1977 Reference Survey Report
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Entity_Type_Definition_Source: 1977 Reference Survey Report
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Attribute_Definition: The method used to extract or prepare the matrix
Attribute_Definition_Source: 1977 Reference Survey Report
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Attribute_Definition_Source: 1977 Reference Survey Report
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Attribute_Definition_Source: 1977 Reference Survey Report
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Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Analysis Methods
Enumerated_Domain_Value_Definition:
AnalysisMethods
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: Volatile Solids
Attribute_Definition: Volatile Solids
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Analysis Methods
Enumerated_Domain_Value_Definition:
AnalysisMethods
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Entity_Type:
Entity_Type_Label: Chemistry Results
Entity_Type_Definition: Table
Entity_Type_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: AnalysisDate
Attribute_Definition: The date the analysis was conducted
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: Missing
Range_Domain_Maximum: Missing
Entity_Type:
Entity_Type_Label: Chemistry Results
Entity_Type_Definition: Table
Entity_Type_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: LabCode
Attribute_Definition:
The laboratory identifer code for the agencyconducting the analysis
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: List 1 Agency Codes
Enumerated_Domain_Value_Definition: A list of participating agencies
Enumerated_Domain_Value_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: SC
Attribute_Definition: Southern California Coastal Water Research Project
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Agency Codes
Enumerated_Domain_Value_Definition:
list 1 AgencyCodes
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Entity_Type:
Entity_Type_Label: Chemistry Results
Entity_Type_Definition: Table
Entity_Type_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: Comments
Attribute_Definition: Additional Comments
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Unrepresentable_Domain: Additional Comments
Entity_Type:
Entity_Type_Label: Chemistry Results
Entity_Type_Definition: Table
Entity_Type_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: QABatch
Attribute_Definition:
An identifying code for all sample processedtogether in the same batch
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Unrepresentable_Domain:
An identifying code for all sample processedtogether in the same batch
Entity_Type:
Entity_Type_Label: Chemistry Results
Entity_Type_Definition: Table
Entity_Type_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: FieldRep
Attribute_Definition:
A logical field to record the presence of a fieldreplicate
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: No
Range_Domain_Maximum: Yes
Entity_Type:
Entity_Type_Label: Chemistry Results
Entity_Type_Definition: Table
Entity_Type_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: DuplicateNumber
Attribute_Definition: The lab duplicate number within a batch
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 1
Entity_Type:
Entity_Type_Label: Chemistry Results
Entity_Type_Definition: Table
Entity_Type_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: MeasurementBasis
Attribute_Definition: The basis for the measurement
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: List 24 Measurement Basis Codes
Enumerated_Domain_Value_Definition: A list of the codes for measurement basis
Enumerated_Domain_Value_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: DW
Attribute_Definition: Dry Weight
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Measurement Basis
Enumerated_Domain_Value_Definition:
Themeasurement basis
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: WW
Attribute_Definition: Wet Weight
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Measurement Basis
Enumerated_Domain_Value_Definition:
Themeasurement basis
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Entity_Type:
Entity_Type_Label: Chemistry Results
Entity_Type_Definition: Table
Entity_Type_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: Survey
Attribute_Definition: A code for the project
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Unrepresentable_Domain: A code for the project
Entity_Type:
Entity_Type_Label: Chemistry Results
Entity_Type_Definition: Table
Entity_Type_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: StationID
Attribute_Definition: A geographic location label
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Unrepresentable_Domain: A geographic location label
Entity_Type:
Entity_Type_Label: Chemistry Results
Entity_Type_Definition: Table
Entity_Type_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: CompositeID
Attribute_Definition:
A key relating the chemistry data to the fishcomposite table
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Unrepresentable_Domain:
A key relating the chemistry data to the fishcomposite table
Entity_Type:
Entity_Type_Label: Chemistry Results
Entity_Type_Definition: Table
Entity_Type_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: Matrix
Attribute_Definition: The test matrix
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: List 17 Test Matricies
Enumerated_Domain_Value_Definition: A list of test matrices used in the project
Enumerated_Domain_Value_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: Sediment
Attribute_Definition: Sediment from the grab
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sample Matrix
Enumerated_Domain_Value_Definition:
SampleMatrices
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Entity_Type:
Entity_Type_Label: Chemistry Results
Entity_Type_Definition: Table
Entity_Type_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: SampleType
Attribute_Definition: The type of result
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: List 4 Sample Tyes
Enumerated_Domain_Value_Definition: A list of sample types used in the project
Enumerated_Domain_Value_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: Result
Attribute_Definition: The actual analytical result
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: SampleType
Enumerated_Domain_Value_Definition: Sample Types
Enumerated_Domain_Value_Definition_Source: 1977 Reference Survey Report

Entity_Type:
Entity_Type_Label: Chemistry Results
Entity_Type_Definition: Table
Entity_Type_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: ParameterCode
Attribute_Definition: The chemical name of the analyte
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: List 18 Parameter Codes
Enumerated_Domain_Value_Definition: A list of chemical parameter names
Enumerated_Domain_Value_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: % Moisture
Attribute_Definition: Percent Moisture in the sediment
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Parameter Code
Enumerated_Domain_Value_Definition:
Chemical beingmeasured
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: BOD
Attribute_Definition: Biological Oxygen Demand
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Parameter Code
Enumerated_Domain_Value_Definition:
Chemical beingmeasured
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: Cadmium
Attribute_Definition: Metal
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Parameter Code
Enumerated_Domain_Value_Definition:
Chemical beingmeasured
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: COD
Attribute_Definition: Chemical Oxygen Demand
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Parameter Code
Enumerated_Domain_Value_Definition:
Chemical beingmeasured
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: Copper
Attribute_Definition: Metal
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Parameter Code
Enumerated_Domain_Value_Definition:
Chemical beingmeasured
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: Hexane Extractable
Attribute_Definition: Organics
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Parameter Code
Enumerated_Domain_Value_Definition:
Chemical beingmeasured
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: Lead
Attribute_Definition: Metal Metal
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Parameter Code
Enumerated_Domain_Value_Definition:
Chemical beingmeasured
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: Nickel
Attribute_Definition: Metal Metal
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Parameter Code
Enumerated_Domain_Value_Definition:
Chemical beingmeasured
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: PCB 1254
Attribute_Definition: Poly Chlorinated Biphenyl
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Parameter Code
Enumerated_Domain_Value_Definition:
Chemical beingmeasured
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: Percent Sand
Attribute_Definition: Grain Size
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Parameter Code
Enumerated_Domain_Value_Definition:
Chemical beingmeasured
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: Silver
Attribute_Definition: Metal
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Parameter Code
Enumerated_Domain_Value_Definition:
Chemical beingmeasured
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: TOC
Attribute_Definition: Total Organic Carbon
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Parameter Code
Enumerated_Domain_Value_Definition:
Chemical beingmeasured
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: Total Acid Volitile Sulfides
Attribute_Definition: AVS
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Parameter Code
Enumerated_Domain_Value_Definition:
Chemical beingmeasured
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: Total DDT
Attribute_Definition: PCB
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Parameter Code
Enumerated_Domain_Value_Definition:
Chemical beingmeasured
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: Total DDT/Total PCB Ratio
Attribute_Definition: Ratio
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Parameter Code
Enumerated_Domain_Value_Definition:
Chemical beingmeasured
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: TON
Attribute_Definition: Total Organic Nitogen
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Parameter Code
Enumerated_Domain_Value_Definition:
Chemical beingmeasured
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: Total PCB
Attribute_Definition: PCB
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Parameter Code
Enumerated_Domain_Value_Definition:
Chemical beingmeasured
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: Volatile Solids
Attribute_Definition: Solids
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Parameter Code
Enumerated_Domain_Value_Definition:
Chemical beingmeasured
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: Zinc
Attribute_Definition: Metal
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Parameter Code
Enumerated_Domain_Value_Definition:
Chemical beingmeasured
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Entity_Type:
Entity_Type_Label: Chemistry Results
Entity_Type_Definition: Table
Entity_Type_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: Qualifier
Attribute_Definition: A modifier for the numerical result
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: List 13 Qualifiers
Enumerated_Domain_Value_Definition: A list of qualifiers
Enumerated_Domain_Value_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: <
Attribute_Definition: Less than
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Qualifier Codes
Enumerated_Domain_Value_Definition:
List 13Qualifier Codes
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: ND
Attribute_Definition: Not Detected
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Qualifier Codes
Enumerated_Domain_Value_Definition:
List 13Qualifier Codes
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Entity_Type:
Entity_Type_Label: Chemistry Results
Entity_Type_Definition: Table
Entity_Type_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: Result
Attribute_Definition: The numerical result of the analysis
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -99 for non detects
Range_Domain_Maximum: 372600
Entity_Type:
Entity_Type_Label: Chemistry Results
Entity_Type_Definition: Table
Entity_Type_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: Units
Attribute_Definition: The units associated with the result
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: List 40 Units
Enumerated_Domain_Value_Definition: A list of all of the units used in the project
Enumerated_Domain_Value_Definition_Source: 1977 Reference Survey Report
Attribute:
Attribute_Label: %
Attribute_Definition: Percent
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Units
Enumerated_Domain_Value_Definition:
Unitsassociated with the result
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: mg / Kg
Attribute_Definition: Parts per thousand
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Units
Enumerated_Domain_Value_Definition:
Unitsassociated with the result
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report

Attribute:
Attribute_Label: No Units
Attribute_Definition: Used for ratios
Attribute_Definition_Source: 1977 Reference Survey Report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Units
Enumerated_Domain_Value_Definition:
Unitsassociated with the result
Enumerated_Domain_Value_Definition_Source:
1977Reference Survey Report


Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Information Systems Manager or Information Manager
Contact_Address:
Address_Type: mailing address
Address: 3535 Harbor Blvd., Suite 110
City: Costa Mesa
State_or_Province: California
Postal_Code: 92626
Country: USA
Contact_Voice_Telephone: 714.755.3200
Hours_of_Service: 8:00 a.m. to 4:00 p.m. Monday Through Friday
Contact_Instructions: email preferred
Resource_Description: 1977 Reference Survey Sediment Chemistry
Distribution_Liability:
Although these data have been processedsuccessfully on a computer system at SCCWRP, nowarranty expressed or implied is made regardingthe accuracy or utility of the data on any othersystem or for general or scientific purposes, norshall the act of distribution constitute any suchwarranty. This disclaimer applies both toindividual use of the data and aggregate use withother data. It is strongly recommended that thesedata are directly acquired from a MLML server, andnot indirectly through other sources which mayhave changed the data in some way. It is alsostrongly recommended that careful attention bepaid to the contents of the metadata fileassociated with these data. MLML shall not beheld liable for improper or incorrect use of thedata described and/or contained herein.

Metadata_Reference_Information:
Metadata_Date: 20010918
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Information Systems Manager or Information Manager
Contact_Address:
Address_Type: physical address
Address: 3535 Harbor Blvd., Suite 110
City: Costa Mesa
State_or_Province: California
Postal_Code: 92626
Country: USA
Contact_Voice_Telephone: 714.755.3200
Contact_Facsimile_Telephone: 714.438.1016
Contact_Electronic_Mail_Address: im_contact@sccwrp.org
Hours_of_Service: 8:00 a.m. to 4:00 p.m. Monday Through Friday
Contact_Instructions: email preferred
Metadata_Standard_Name:
NBII Content Standard for National BiologicalInformation Infrastructure Metadata
Metadata_Standard_Version: December 1985
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None
Metadata_Security_Information:
Metadata_Security_Classification_System: None
Metadata_Security_Classification: Unclassified
Metadata_Security_Handling_Description: None

Generated by mp on Sat Apr 17 18:04:28 2004