In Reply Refer To: October 9, 1987 WGS-Mail Stop 412 OFFICE OF WATER QUALITY TECHNICAL MEMORANDUM NO. 88.01 Subject: PROGRAMS AND PLANS--National Water-Quality Networks: Fiscal Year 1988--October 1, 1987 to September 30, 1988 This memorandum contains an outline of Program status and protocol for operation of the National Stream Quality Accounting Network (NASQAN) and the Hydrologic Bench-Mark Network (HBMN) for fiscal year (FY) 1988. All personnel responsible for collecting NASQAN or HBMN samples should read this memorandum. Network data collection can be significantly enhanced when personnel responsible for field data collection are informed of changes in sample collection and processing procedures. NETWORK OPERATIONS, FY 1988 Operation during FY 1988 of both NASQAN and HBMN will be largely unchanged from FY 1987 protocol. An exception is discontinuation of stable isotope sample collection which is discussed subsequently. Field Incremental Analysis for Alkalinity This subject has been discussed in Office of Water Quality Technical Memoranda 85.19, 86.10, and 87.01. Incremental titration for alkalinity measurements will continue in FY 1988. Continue to filter samples for alkalinity measurement, and use the following codes for filtered samples (Note: Use Method Code B for incremental titration): Code Parameter Description 39086 Alkalinity, water, dissolved, field, as CaCO3, mg/L 39087 Alkalinity, water, dissolved, lab, as CaCO3, mg/L 00452 Carbonate, water, dissolved, field, as CO3, mg/L 00453 Bicarbonate, water, dissolved, field, as HCO3, mg/L 71834 Hydroxide, water, dissolved, field, as OH, mg/L 00904 Hardness, non-carbonate, water, dissolved, field, as CaCO3, mg/L 00905 Hardness, non-carbonate, water, dissolved, lab, as CaCO3, mg/L In the next few months, Dave Maddy and Jim Schornick not only will make the changes discussed in Tech Memo 87.01, but also will send out a detailed explanation of the changes and current status. Continued collection of fixed-endpoint titration data for comparative purposes is no longer necessary, and should be discontinued in FY 1988. Stable Isotope Investigations Districts involved in collecting samples for this investigation are to discontinue sample collection beginning in FY 1988. Data collection orginally intended to be two years was extended through the end of FY 1987. A memorandum to the Districts involved will be forthcoming from Tyler Coplen. Data analysis and reports will be produced over the next couple of years. Collection of Representative Samples As in past years, the Office of Water Quality and the NASQAN/Benchmark staff remind all field personnel that the collection of a representative sample is of utmost importance. Procedures for the collection of a representative sample are well documented. As part of this effort, cross-section surveys (depth and width) of water temperature, pH, specific conductance, dissolved oxygen, and suspended sediment have been required activities at each site in the two networks. Over a period of years the data base of such data should include observations for various seasons and surface water discharges. Cross-section surveys should include a discharge measurement so that each measured constituent can be associated with a weighted discharge value. The results of cross-section surveys should be stored in the WATSTORE/NWIS Water-Quality File. When entering such data, be sure to enter the cross section location - WATSTORE code 00009, CROSS-SECTION LOCATION, FEET FROM LEFT BANK, LOOKING DOWNSTREAM. Periods for Sample Collection The table below indicates the time periods for sample collection for stations sampled quarterly (four times per year) and bimonthly (six times per year). QUARTERLY STATIONS BIMONTHLY STATIONS first sample OCTOBER-NOVEMBER-DECEMBER OCTOBER-NOVEMBER second sample JANUARY-FEBRUARY-MARCH DECEMBER-JANUARY third sample APRIL-MAY-JUNE FEBRUARY-MARCH fourth sample JULY-AUGUST-SEPTEMBER APRIL-MAY fifth sample ------------------------- JUNE-JULY sixth sample ------------------------- AUGUST-SEPTEMBER During FY 1987, numbers of samples arriving at the Central Laboratory were significantly higher between about August 10 and September 10 (the last accounting month for FY 1987 at the lab) than the monthly average for the previous 11 months. Almost twice as many samples arrived in the last month when compared to the average for previous months. Planning sample collection to more evenly distribute (in time) the final sample would benefit laboratory operations. Use of ICP Use of the inductively-coupled plasma (ICP) procedure for the analysis of selected dissolved common and trace inorganic constituents will continue to be utilized to decrease analytical costs. The ICP procedure is not to be used whenever the specific conductance is greater than 2,000 uS/cm because the detection limits become greater. Schedule 177 will be used in lieu of schedule 176 whenever the specific conductance is greater than 2,000 uS/cm. Based upon historical specific conductance data for each NASQAN and HBMN Station, the percentage of samples with specific conductance values equal to or greater than 2,000 uS/cm was computed and is given in Appendix A under the right-hand heading "PROBABILITY (%) THAT SPECIFIC CONDUCTANCE WILL BE EQUAL TO OR GREATER THAN 2,000 US/CM." Only schedule 176 is authorized for stations with zero probability of the specific conductance exceeding 2,000 uS/cm. Because of the uncertainty involved in predicting the number of samples during FY 1987 that will exceed 2,000 uS/cm, both schedule 176 and 177 are authorized for four uses at NASQAN and HBMN stations where the value given in the right-hand column of Appendix A is greater than zero. It should be understood, however, that the actual number of usages authorized between schedules 176 and 177 is four, not eight, for both HBMN and NASQAN. District Water-Quality Specialists have the authority and responsibility to request schedules 176 versus schedule 177. Because use of schedule 176 versus 177 is dependent solely upon the specific conductance of the sample, District Water- Quality Specialists should ensure that all field personnel are aware that a field specific conductance measurement is absolutely necessary whenever schedule 176 or 177 is to be utilized. Unique Numbers Districts are reminded that all samples (excluding suspended- sediment samples which are analyzed in District sediment laboratories for particle size and concentration) are to be sent to the U.S. Geological Survey Central Laboratory in Arvada, CO, with appropriate Central Laboratory unique numbers. The necessary computer program documentation to retrieve unique numbers is given in Quality of Water Branch Technical Memorandum 79.15. New unique numbers are established at the beginning of the each water year and are to be used until September 30 of each water year. Personnel collecting NASQAN or HBMN samples should keep a current listing of the unique numbers in their field folder. Any National-Networks sample processed by the Central Laboratory without a unique number will result in the analytical costs being billed to the District default account instead of the appropriate National-Networks account. Correcting such billing errors after they occur requires a memorandum to the Coordinator, National Water-Quality Networks. Analytical Services Request Form Although the unique number, date, and time are all that are required on the Analytical Services Request Form, additional information such as station name, special sampling conditions, National-Networks program (NASQAN, Bench-mark), etc., are helpful to the Central Laboratory personnel and District personnel processing the analytical results. All information coded in the comments section of the Analytical Services Request Form is stored in the Water-Quality File. Uniform Data-Collection Program Districts are reminded of the importance to ensure that all NASQAN and HBMN samples be analyzed for the same measurements as specified later in this memorandum. In particular, all field measurements specified have to be done for every sample. Analytical Schedules There are no changes to any of the analytical schedules used in the NASQAN and Bench-Mark networks in FY 1988. NASQAN DATA COLLECTION PROGRAM NASQAN stations to be operated during the period October 1, 1987 through September 30, 1988 are listed in Appendix A. The network will have 412 stations. There will be one NASQAN station sampled monthly, 243 NASQAN stations sampled bimonthly, and l68 NASQAN stations sampled quarterly. Major network changes are anticipated in FY 1989 using the results of a screening/optimization model. The model should be operational by January 1988. The model will screen existing NASQAN stations, and proposed stations submitted by Districts responding to the NASQAN review recommendations and in response to the April 10, 1987 memorandum requesting station proposals. About 590 stations will be included in the network optimization process. As progress is made in this process, it will be communicated to the Districts. NASQAN Sampling Schedule for FY 1988 Please notify the Office of Water Quality if the District responsible for collection of samples for any NASQAN or HBMN station has changed recently and is therefore incorrectly listed in Appendix A. NASQAN Sampling Schedule (Quarterly Stations) 4 per year - Field measurements: Instantaneous discharge (WATSTORE Code 00061) Specific Conductance (WATSTORE Code 00095) Water temperature, oC (WATSTORE Code 000010) Barometric pressure (WATSTORE Code 00025) pH (WATSTORE Code 00400) Carbonate, water, dissolved, mg/L (WATSTORE Code 00452) Bicarbonate, water, dissolved, mg/L (WATSTORE Code 00453) Alkalinity, water, dissolved, as CaCO3, mg/L (WATSTORE Code 39086) Hydroxide, water, dissolved, mg/L (WATSTORE Code 71834) Dissolved oxygen (WATSTORE 00300) Fecal coliform bacteria (WATSTORE Code 31625) Fecal streptococcal bacteria (WATSTORE Code 31673) 4 per year - Suspended sediment: Concentration (WATSTORE Code 80154) Percent finer than 0.062 mm, sieve diameter (WATSTORE Code 70331) 4 per year - Nutrients, lab schedule 86 4 per year - Physical properties, common and trace dissolved inorganic constituents: lab schedule 176 (specific conductance <2,000 uS/cm) or lab schedule 177 (specific conductance >2,000 uS/cm) Cross-section surveys (depth and width) of temperature, pH, specific conductance, dissolved oxygen, and suspended- sediment concentration as needed to document cross-section homogeneity. NASQAN Sampling Schedule (Bimonthly Stations) 6 per year - Field measurements (same as quarterly) 6 per year - Suspended sediment (same as quarterly) 6 per year - Nutrients, lab schedule 86 2 per year - Physical properties and common dissolved inorganic constituents: lab schedule 1904 (not used when schedule 176 is used) 4 per year - Physical properties, and common and trace dissolved inorganic constituents: lab schedule 176 Cross-section surveys (depth and width) of temperature, pH, specific conductance, dissolved oxygen, and suspended- sediment concentration as needed to document cross-section homogeneity. NASQAN RADIOCHEMICAL SUBNETWORK NASQAN Radiochemical Subnetwork Stations for FY 1988 are the same as those in FY 1987. Stations are indicated in Appendix A by listing a "2" under the heading "SCHEDULE 1703 RADIOCHEM". There are 46 stations. 2 per year - Radiochemicals, lab schedule 1703 HYDROLOGIC BENCH-MARK NETWORK Hydrologic Bench-Mark Network stations to be operated in FY 1988 are unchanged from FY 1987, and are listed in Appendix A. Plans are progressing on a review of the entire HBMN, and an approach will be drafted by December 1988. Currently, we anticipate changes to the network will not occur until FY 1990. At 3 HBMN stations, only surface water discharge data are to be collected: these are also given in Appendix A. Of the 56 stations to be sampled for water quality during FY 1988 forty-four (44) HBMN stations will be sampled quarterly, 10 HBMN stations will be sampled bi-monthly, and 2 will be sampled monthly. All HBMN samples will be analyzed for the same properties and constituents as NASQAN samples. The field measurements and analytical schedules used for the HBMN program are therefore the same as for the NASQAN program. Trace metals samples will be collected at the 56 water- quality Bench-Mark stations on a quarterly basis. The analytical schedules remain the same. Analysis of radiochemicals at the 56 water-quality Bench-Mark stations will be on a semiannual basis (1 high-flow and 1 low-flow sample). The specific conductance is likely to exceed 2,000 uS/cm at only one HBMN station - the Bear Den Creek at Mandaree, ND (06332515). Therefore, this station may require schedule 177 for analysis of quarterly dissolved common and trace inorganic constituents. All other stations will require use of schedule 176 for analysis of these constituents. Hydrologic Bench-Mark Network Sampling Schedule (Quarterly Stations) 4 per year - Field Measurements: Instantaneous discharge (WATSTORE Code 0006l) Specific conductance (WATSTORE Code 00095) Water temperature, oC (WATSTORE Code 00010) Barometric pressure, mm Hg (WATSTORE Code 00025) pH (WATSTORE Code 00400) Carbonate, water, dissolved, mg/L (WATSTORE Code 00452) Bicarbonate, water, dissolved, mg/L (WATSTORE Code 00453) Alkalinity, water, dissolved, as CaCO3, mg/L (WATSTORE Code 39086) Hydroxide, water, dissolved, mg/L (WATSTORE Code 71834) Dissolved oxygen (WATSTORE 00300) Fecal coliform bacteria (WATSTORE Code 31625) Fecal streptococcal bacteria (WATSTORE Code 31673) 4 per year - Suspended sediment: Concentration (WATSTORE Code 80154) Percent finer than 0.062 mm, sieve diameter (WATSTORE Code 70331) 4 per year - Nutrients, lab schedule 86 4 per year - Physical properties, common and trace dissolved inorganic constituents: lab schedule 176 2 per year - Radiochemicals, lab schedule 1703 Cross-section surveys (depth and width) of temperature, pH, specific conductance, dissolved oxygen, and suspended- sediment concentration as needed to document cross-section homogeneity. Hydrologic Bench-Mark Network Sampling Schedule (Bimonthly Stations) 6 per year - Field measurements (same as quarterly) 6 per year - Suspended sediment (same as quarterly) 6 per year - Nutrients, lab schedule 86 4 per year - Physical properties, common and trace dissolved inorganic constituents: lab schedule 176 (specific conductance <2,000 uS/cm) or lab schedule 177 (specific conductance >2,000 uS/cm) 2 per year - Physical properties and common dissolved inorganic constituents: lab schedule 1904 (not used when schedule 176 or 177 is used) 2 per year - Radiochemicals, lab schedule 1703 Cross-section surveys (depth and width) of temperature, pH, specific conductance, dissolved oxygen, and suspended- sediment concentration as needed to document cross-section homogeneity. Hydrologic Bench-Mark Network Sampling Schedule (Monthly Stations) 12 per year - Field measurements (same as quarterly) 12 per year - Suspended sediment (same as quarterly) 12 per year - Nutrients, lab schedule 86 4 per year - Physical properties and common and trace dissolved inorganic constituents: lab schedule 176 8 per year - Physical properties and common dissolved inorganic constituents: lab schedule 1904 (not used when schedule 176 is used) 2 per year - Radiochemicals, lab schedule 1703 Cross-section surveys (depth and width) of temperature, pH, specific conductance, dissolved oxygen, and suspended- sediment concentration as needed to document cross-section homogeneity. PROGRAM ACTIVITIES AND PRODUCTS There are several items worth mentioning that either have been funded by the National Water Quality Networks, or result from analysis of network data. First are two recent publications of considerable significance: Smith, R. A., Alexander, R. B., and Wolman, M. G., 1987, Water quality trends in the Nation's rivers: Science, v. 235, p. 1607-1615. Smith, R. A., Alexander, R. B., and Wolman, M. G., 1987, Analysis and interpretation of water-quality trends in major U.S. rivers, 1974-81: U.S. Geological Survey Water-Supply Paper 2307, 25p. Three other items provided subsequently are current information on (1) the Suspended Sediment Chemistry Study, (2) State-wide Water-Quality Time Trend Studies, and (3) USGS Laboratory Methods History. Suspended Sediment Chemistry Study The suspended sediment chemistry study was initiated to measure temporal and spatial variations in chemical concentrations associated with suspended sediment at several sites. The concern is that in the past, suspended sediment chemistry has usually been inferred by the difference between the concentrations measured in the total water fraction and the dissolved water fraction. This type of indirect measurement has not been satisfactory in most cases, because of the large errors possible relative to the typical differences measured. Therefore, direct measurement of the chemical concentrations associated with suspended sediments is desirable. Because of typically low concentrations of suspended sediment, questions of sampling approach need to be addressed which requires knowing spatial and temporal variability of the sediment chemistry. Knowledge of the variability will help answer questions regarding the use of point or pumped sampling devices instead of the usual depth integrating samplers which typically do not collect sufficient sediment for chemical analysis. A sampling approach was used in this study that required simultaneous collection of five (EDI) depth integrated samples, a point sample, and a pumped sample at a site. These simultaneous samples were collected six times during a site visit over about a three hour period to provide both spatial and temporal definition. Samples were dewatered and split into size fractions greater than and less than 63 microns. The samples were analyzed chemically as discrete samples. In addition, before and after these sets of discrete samples were collected, composite samples were collected that represent the standard USGS collection methodology. Composite samples were dewatered and split into replicate samples for chemical analysis. Analyses were made of all samples for major, minor and trace elements (43 elements including heavy metals). Selected samples will also be analyzed for mineral identification. Sampling sites were selected to be in areas where other ongoing studies could use the data collected for the sediment chemistry study. Therefore, areas of high priority for site selection were from the NAWQA Pilot Program, Surface Water Toxics Program, and the San Joaquin Study. We required sites sampled to have the following: a bridge (to accommodate equipment), at least a 100 foot wide channel, and expected suspended sediment concentration above 100 mg/L. The following sites were sampled: 14244200 Cowlitz R. at Kelso, WA (initial test site - high sed. conc.) * 11303500 San Joaquin R. at Vernallis, CA (impt. site San Joaquin study) * 07097000 Arkansas R. at Portland, CO (downstream from SW Toxic study) 06880800 W. Fork Big Blue R. nr Dorchester, NE (NAWQA Study area) 05532500 Des Plaines R. at Riverside, IL (NAWQA Study area) Two sites (11303500, 07097000) were sampled twice, about one to two months between site visits. All samples were collected between the end of April and beginning of August, 1987. In all, 610 discrete samples including replicate samples were collected for analysis. Currently, the samples are being analyzed chemically. Analytical work should be completed early in FY 1988, and a data set compiled. Interpretation of the data will begin in FY 1988. State-wide Water-Quality Time Trend Studies Studies of water-quality time trends have been made and interpreted for the NASQAN network (supplemented with NWQSS sites) at a national scale. As a result of these studies, some regional water quality trend patterns were identified which were not explained by the available ancillary data nor by general knowledge of other possible controls on water- quality. Thus, there is an interest to determine if the regional patterns developed from national networks data would persist through analysis of more local (state-wide) data collection networks. Additionally, analysis of dense regional data networks allowing application of ancillary data to a scale smaller than National is also of interest. Therefore, several water- quality trend studies were initiated in Districts with dense water quality networks having at least 10 years of data. Studies were begun in Texas and New Jersey in FY 1987 because those Districts have two of the most dense State-wide water- quality networks. The Texas data network consists of 185 stations with more than 10 years of data. The New Jersey network consists of 89 stations with 10 years of water-quality data. These studies have been developed in three phases, with phase I and phase II essentially completed in FY 87. The three phases are: l - Assemble water-quality data base, and generate trend analysis results using the seasonal Kendall test for trend. II - Determine if ancillary data is available to use in interpretation of the trend test results. III - Interpret the State-wide trend results and relate those results to interpretations made of National trend test results. Currently, the two studies are completing the first two phases, phase three will take all of FY 1988 and be completed early in FY 1989. Preliminary examination of some of the trend results yields several generalizations from the two studies. New Jersey streams had increasing trends in specific conductance, alkalinity, biological oxygen demand, phenols, nutrients, and fecal bacteria; while down trends were found in arsenic, chromium, copper, iron, lead, and nickel. Texas streams had increasing trends in pH, nitrate, sulfate, fluoride, and potassium; while down trends were found for calcium, magnesium, chloride, and hardness. Trend results for metals are not yet complete for Texas. Ancillary data for interpretation of trend results are available for the two States. Thus, data on population, agriculture and agricultural practices, point sources, and other activities possibly affecting water-quality are available. USGS LABORATORY METHODS HISTORY Time trend studies involving water-quality data from both NASQAN and HBMN have yielded interesting results. One question raised in examining these study results often centers on possible effects due to changes in laboratory methods. Currently, historical laboratory methodology is not documented, therefore time trend analysts have a difficult task identifying trends possibly induced by changes in laboratory methods. The objective of this study is to identify where and when changes in laboratory methods occurred. Contents of this study include the historical NASQAN time period (from 1973), and the historical NASQAN parameter list. If documentation and knowledge concerning changes for some parameters is not available, that information will also be included. We anticipate this study will be completed in FY 1988. If any information in this memorandum prompts questions or comments, please call Tim Miller whose current number is 429-2292 (FTS). David A. Rickert This memorandum does not supersede any previous memorandum. Distribution: A, B, S, FO, PO Key Words: water-quality, networks, sampling, NASQAN, Bench-Mark, FY 1988 APPENDIX A This appendix contains the listing by District of all NASQAN and HBMN stations. Specific information for each site includes sampling frequency and laboratory schedules. Sampling frequency and laboratory schedules have not been changed from FY 1987. Copies of the appendix may be re- trieved via computer by the following command: FTR NASQAN>APPENDIX.A.88 FTS_DEPOT>== -SS QVARSC You may then access the Appendix file in your FTS_DEPOT APPENDIX B NUTRIENTS SCHEDULE NUMBER 86 USER NQ TYPE WN # OF CODES 8 LC WATSTORE NAME S-DESIG. 228 00631 NITROGEN, DIS., NO2+NO3 AS N FC 301 00608 NITROGEN, DIS., NH4 AS N FC 162 00671 PHOSPHORUS, DIS., ORTHO AS P FC 128 00666 PHOSPHORUS, DIS. FC 84 00625 NITROGEN, NH4+ORG AS N, TOTAL RC 129 00665 PHOSPHORUS, TOTAL RC 123 00610 NITROGEN, TOTAL, AMMONIA AS N RC 160 00613 NITROGEN, DISSOLVED, NITRITE AS N FC ***** SAMPLE TYPE AND VOLUME INFORMATION ***** VOLUME TYPE VOLUME TYPE VOLUME TYPE VOLUME TYPE 250 ML FC 250 ML RC * * RADIOCHEMICALS SCHEDULE NUMBER 1703 LIMITED USER NQ TYPE WR # OF CODES 9 LC WATSTORE NAME S-DESIG. 1131 99473 FILTRATION GROSS-B RU 444 80030 GROSS ALPHA DIS. U-NA RU 446 80040 GROSS ALPHA SUS. U-NA RU 455 03515 GROSS-B, DIS. CS-137 RU 445 80050 GROSS-B, DIS. SR-90 RU 456 03516 GROSS-B, SUSP. CS-137 RU 447 80060 GROSS-B, SUSP. SR-90 RU 449 09511 RADIUM-226, DIS. RN RU 797 80020 U.DIS. FL-EXT. GR-W RU ***** SAMPLE TYPE AND VOLUME INFORMATION ***** VOLUME TYPE VOLUME TYPE VOLUME TYPE VOLUME TYPE 4L RU * * * Appendix B -- Continued PHYSICAL PROPERTIES, COMMON AND TRACE DISSOLVED INORGANIC CONSTITUENTS SCHEDULE NUMBER 176 LMT'D FIXED USER NO TYPE WI LC WATSTORE NAME S-DESIG. LC WATSTORE NAME S-DESIG. 112 01000 ARSENIC, DIS. FA 652 01080 STRONITIUM, DIS . FA 1284 01106 ALUMINUM, DIS. DCP FA 653 01085 VANADIUM, DIS. FA 641 01005 BARIUM, DIS. FA 671 01090 ZINC, DIS. FA 655 01010 BERYLLIUM, DIS. FA 659 00915 CALCIUM, DIS. FA 673 01025 CADMIUM, DIS. FA 663 00925 MAGNESIUM, DIS. FA 146 01030 CHROMIUM, DIS. FA 675 00930 SODIUM DIS. FA 644 01035 COBALT, DIS. FA 54 00935 POTASSIUM, DIS. FA 22 01040 COPPER, DIS. FA 667 00955 SILICA, DIS. FU 645 01046 IRON, DIS. FA 1200 00945 SULFATE TURB. DIS. FU 38 01049 LEAD, DIS. FA 31 00950 FLUORIDE, DIS. FU 664 01130 LITHIUM, DIS. FA 1213 00940 CHLORIDE, DIS. FU 648 01056 MANGANESE, DIS. FA 27 70300 ROE, DIS. AT 180 C FU 226 71890 MERCURY, DIS. FAM 68 00403 pH, (LABORATORY) RU 649 01060 MOLYBDENUM, DIS. FA 69 90095 SP, CONDUCTANCE, LAB RU 44 01065 NICKEL, DIS. FA 50 00076 TURBIDITY, NTU L00050 87 01145 SELENIUM, DIS. FA 70 00417 ALK, TOT LAB. CAC03 RU 166 01075 SILVER, DIS. FA 642 00000 METALS, DIS. CHE-EXT FA ***** SAMPLE TYPE AND VOLUME INFORMATION ***** VOLUME TYPE VOLUME TYPE VOLUME TYPE VOLUME TYPE 1 L FA 500 ML FU 250 ML LC0050 250 ML RU 250 ML FAM COMMON CONSTITUENTS SCHEDULE NUMBER 1904 USER NQ TYPE WI # OF CODES 13 LC WATSTORE NAME S-DESIG. LC WATSTORE NAME S-DESIG. 12 00915 CALCIUM, DIS. FA 27 70300 ROE, DIS. AT 180C FU 40 00925 MAGNESIUM, DIS FA 1200 00945 SULFATE TURB. DIS. FU 54 00935 POTASSIUM, DIS FA 70 00417 ALK TOT LAB. CACO3 RU 56 00955 SILICA, DIS. FU 68 00403 pH (LABORATORY) RU 59 00930 SODIUM, DIS. FA 69 90095 SP. CONDUCTANCE LAB RU 1213 00940 CHLORIDE, DIS. FU 50 00076 TURBIDITY (NTU) LCOO50 31 00950 FLUORIDE, DIS. FU 19 ***** SAMPLE TYPE AND VOLUME INFORMATION ***** VOLUME TYPE VOLUME TYPE VOLUME TYPE VOLUME TYPE 250 ML FA 500 ML FU 250 ML RU 100 ML LC0050 Appendix B--Continued PHYSICAL PROPERTIES, COMMON AND TRACE DISSOLVED INORGANIC CONSTITUENTS SCHEDULE NUMBER 177 LMT'D FIXED USER NQ TYPE WI LC WATSTORE NAME S-DESIG. LC WATSTORE NAME S-DESIG. 112 01000 ARSENIC, DIS. FA 1210 01085 VANADIUM, DIS. FA 1284 01106 ALUMINUM, DIS. DCP. FA 67 01090 ZINC, DIS. FA 7 01005 BARIUM, DIS. FA 12 00915 CALCIUM, DIS. FA 170 01010 BERYLLIUM, DIS. FA 40 00925 MAGNESIUM, DIS. FA 73 01025 CADIMUM, DIS. FA 59 00930 SODIUM, DIS. FA 146 01030 CHROMIUM, DIS. FA 54 00935 POTASSIUM, DIS. FA 18 01035 COBALT, DIS. FA 56 00955 SILICA, DIS. FU 22 01040 COPPER, DIS. FA 1200 00945 SULFATE TURB. DIS. FU 172 01046 IRON, DIS. FA 31 00950 FLUORIDE, DIS. FU 38 01049 LEAD, DIS. FA 1213 00940 CHLORIDE, DIS. FU 39 01130 LITHIUM, DIS. FA 27 70300 ROE, DIS. AT 180 C FU 42 01056 MANGANESE, DIS. FA 68 00403 pH, (LABORATORY) RU 226 71890 MERCURY, DIS. FAM 69 90095 SP, CONDUCTANCE, LAB RU 110 01060 MOLYBDENUM, DIS. FA 50 00076 TURBIDITY, NTU LC0050 44 01065 NICKEL, DIS. FA 70 00417 ALK, TOT. LAB CACO3 RU 87 01145 SELENIUM, DIS. FA 642 00000 METALS, DIS. CHE-EXT FA 166 01075 SILVER, DIS. FA 62 01080 STRONTIUM, DIS. FA ***** SAMPLE TYPE AND VOLUME INFORMATION ***** VOLUME TYPE VOLUME TYPE VOLUME TYPE VOLUME TYPE l L FA 500 ML FU 250 ML LC0050 250 ML RU 250 ML FAM