CHARACTERIZATION OF STORMWATER RUNOFF FROM THE NAVAL AIR STATION AND NAVAL WEAPONS INDUSTRIAL RESERVE PLANT, DALLAS, TEXAS, 1994-96
By Timothy H. Raines, Stanley Baldys III, and Joy S. Lizarraga
U.S. GEOLOGICAL SURVEY Open-File Report 97-402
Prepared in cooperation with the SOUTHERN DIVISION NAVAL FACILITIES ENGINEERING COMMAND 2155 EAGLE DRIVE CHARLESTON, SOUTH CAROLINA 29418
Austin, Texas 1997 U.S. DEPARTMENT OF THE INTERIOR BRUCE BABBITT, Secretary U.S. GEOLOGICAL SURVEY Gordon P. Eaton, Director
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
For additional information write to: Copies of this report can be purchased from:
District Chief U.S. Geological Survey U.S. Geological Survey Branch of Information Services 8011 Cameron Rd. Box 25286 Austin, TX 78754-3898 Denver, CO 80225-0286 CONTENTS
Abstract ...... ^ 1 Introduction ...... ^ 1 Purpose and Scope ...... 2 Description of Study Area ...... 2 Stormwater Sampling ...... 2 Site Selection...... 2 Instrumentation ...... 2 Sampling Procedures and Constituents ...... 4 Quality Assurance and Quality Control ...... 5 Acknowledgments ...... 5 Characterization of Stormwater Runoff ...... 6 Storm Data ...... ^ 6 Stormwater-Quality Data ...... 6 Chemical Data ...... 6 Fixed Sites ...... 6 Grab Sites ...... 17 Quality Assurance and Quality Control...... 17 Toxicity Data ...... 18 Event-Mean Concentrations of Selected Constituents ...... 19 Computations of Storm Loadings for Selected Constituents ...... 19 Summary ...... ^ 19 References Cited ...... ^ 20
FIGURES 1. Map showing location of study area and fixed and grab sites ...... 3 2-6. Hydrographs showing accumulated precipitation, discharge, and times of grab samples and composite aliquots at site: 2. NAS-1 ...... 7 3. NAS-2 ...... 8 4. NAS-3 ...... 9 5. NWIRP-1 ...... 10 6. NWIRP-2 ...... 11 7-10. Boxplots showing range and distribution of: 7. Chemical and biochemical oxygen demand concentrations ...... 12 8. Fecal coliform and fecal streptococcus bacteria densities ...... 12 9. Suspended and dissolved solids concentrations ...... 13 10. Total nitrite plus nitrate and total kjeldahl nitrogen concentrations ...... 13 11-12. Graphs showing number of detections for: 11. Trace elements ...... 16 12. Volatile organic compounds ...... 16
TABLES 1. Characteristics of sites, Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas ...... 4 2. Characteristics of storms and samples collected at fixed sites, Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas ...... 14
CONTENTS Hi 3-7. Stormwater chemical data at site: 3. NAS-1, Naval Air Station, Dallas, Texas ...... 21 4. NAS-2, Naval Air Station, Dallas, Texas ....,...... '...... 31 5. NAS-3, Naval Air Station, Dallas, Texas ...... 41 6. NWIRP-1, Naval Weapons Industrial Reserve Plant, Dallas, Texas ...... 51 7. NWIRP-2, Naval Weapons Industrial Reserve Plant, Dallas, Texas ...... 61 8. Number of trace element, volatile organic compound, semivolatile organic compound, and organophosphorous pesticide detections at fixed sites, Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas ...... 71 9. Number of trace element and volatile organic compound detections that exceed maximum contaminant levels at fixed sites, Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas ...... 73 10. Number of trace element detections that exceed effluent limits for discharge of hazardous metals at fixed sites, Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas ...... 74 11. Number of detections that exceed effluent limits for discharge of water containing other petroleum substances at fixed sites, Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas ...... _ 74 12. Stormwater chemical data at grab sites, Naval Air Station, Dallas, Texas ...... 75 13. Number of trace element and volatile organic compound detections at grab sites, Naval Air Station, Dallas, Texas ...... 78 14. Stormwater toxicity data at fixed sites, Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas ...... 79 15. Median event-mean concentrations of selected constituents at fixed sites, Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas ...... 80
iv Characterization of Stormwater Runoff From the Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas, 1994-96
By Timothy H. Raines, Stanley Baldys III, and Joy S. Lizarraga
Abstract posite samples were collected for two of the six storms sampled at the fixed sites and analyzed for The characterization of stormwater runoff aquatic toxicity. Fathead minnow growth and sur from the Naval Air Station (NAS) and the vival toxicity tests and water flea reproduction and Naval Weapons Industrial Reserve Plant (NWIRP), survival toxicity tests were done. Dallas, Texas, is necessary to determine if Median event-mean concentrations com runoff from the facilities is contributing to off-site puted for 12 selected constituents in samples from contamination of surface waters, A network of five NAS and NWIRP fixed sites were compared to fixed sites and four grab sites was established to median event-mean concentrations for residential, collect stormwater-runoff samples from a substan commercial, industrial, and highway land uses tial part of the drainage area of each facility. Fixed within the Dallas-Fort Worth area computed from sites were instrumented to measure and store pre data collected for the National Pollutant Discharge cipitation, stage, discharge, and runoff-volume Elimination System program. NAS and NWIRP data and to collect flow-weighted composite sam median event-mean concentrations also were com ples during a storm. Grab and composite samples pared to those for residential and commercial land were collected for six storms at each of the five uses from the Nationwide Urban Runoff Program. fixed sites from October 1994 to March 1996. The grab samples were analyzed for about 100 proper INTRODUCTION ties and constituents including specific conduc The U.S. Department of Defense is concerned tance, pH, water temperature, bacteria, trace about the past and present environmental impacts of elements, oil and grease, total phenols, and volatile stormwater runoff from the Naval Air Station (NAS) organic compounds. The composite samples were and the adjacent Naval Weapons Industrial Reserve analyzed for about 220 properties and constituents Plant (NWIRP), Dallas, Texas, to receiving waters and including specific conductance, pH, chemical oxy ecosystems. Most runoff from the NAS and the NWIRP gen demand, biochemical oxygen demand, major drains into Mountain Creek Lake. Stormwater runoff ions, suspended and dissolved solids, nutrients, is suspected of being a major mechanism of off-site trace elements, total organic carbon, volatile contaminant transport from the two facilities. organic compounds, semivolatile organic com In 1994 the U.S. Geological Survey (USGS), in pounds, and organochlorine and organophosphorus cooperation with the Southern Division Naval Facilities pesticides. Grab samples were collected for two Engineering Command, began a study to characterize the stormwater runoff from the NAS and NWIRP. A storms (September 18,1995, and October 2,1995) stormwater sampling program was conducted from at each of the four grab sites. The grab samples October 1994 to March 1996. Several concurrent stud were analyzed for about 80 constituents including ies of the quality of sediment suspended in runoff and specific conductance, pH, water temperature, trace on the lake bottom and the quality of ground water are elements, and volatile organic compounds. Com being done in the study area.
Abstract 1 Purpose and Scope Land cover is characterized by a variety of mili tary land uses. The NAS land cover consists of runways, This report characterizes stormwater runoff orig hangars, offices or commercial buildings, aircraft main inating from the drainage areas of nine sites at the NAS tenance and automotive shops, barracks or high-density and NWIRP. The report is limited to analysis of chemi residential housing, and several paved roads. The cal and toxicity (to aquatic organisms) data for storm- NWIRP land cover consists primarily of industrial water runoff collected from October 1994 to March buildings (used for manufacturing aircraft and weap 1996. Grab and flow-weighted composite samples were ons) and paved areas. collected at each of five fixed sites on the NAS and NWIRP during six storms and analyzed for about 100 Stormwater Sampling properties and constituents in grab samples and about A network of five fixed sites and four grab sites 220 properties and constituents in composite samples. was established to collect stormwater samples to be Grab samples were collected at each of four grab sites on the NAS during two storms and analyzed for about analyzed for constituents that characterize the physical, organic, and inorganic chemical quality of the storm- 80 properties and constituents. Additional composite water runoff. The five fixed sites were instrumented samples were collected at each of the five fixed sites during two of the six storms and analyzed for aquatic with equipment to measure and store 1-minute values of organism toxicity. Median event-mean concentrations precipitation, stage, discharge, and runoff volume and to collect automatic flow-weighted composite samples (EMCs) were calculated for 12 selected constituents for during a storm. Grab and composite samples were col the fixed sites. lected for six storms at each of the five fixed sites. Grab Description of Study Area samples were collected manually for two storms at each of the four grab sites (outfalls). Additional composite The study area is in north-central Texas in Dallas samples were collected for two of the six storms at each County in the city of Dallas (fig. 1). The NWIRP is of the five fixed sites and analyzed for aquatic organism immediately adjacent to and west of the NAS. Both toxicity. facilities are adjacent to and north of Mountain Creek Site Selection Lake. Most runoff from the NAS and NWIRP drains into Mountain Creek Lake. Five fixed stormwater-sampling sites were estab The study area has a moderate climate with hot, lished; three on the NAS and two on the NWIRP (fig. 1). dry summers; warm, wet autumns; cool, dry winters; These sites were located to measure runoff from a major and warm, wet springs. Mean annual temperature for percentage of the drainage area of each facility. Three the study area is 64 degrees Fahrenheit (°F) with of the five outfalls drain into Mountain Creek Lake monthly means ranging from 44 °F in January to 86 °F (NAS-1, NWIRP-1, NWIRP-2). Four additional in July. Mean annual precipitation, mostly as rainfall, is stormwater outfalls were selected at the NAS for col 29.5 inches (in.) (U.S. Department of Commerce, lecting grab samples (fig. 1). The stormwater outfalls at National Oceanic and Atmospheric Administration, all four grab sites discharge into Mountain Creek Lake. 1990). A fifth grab site at the NAS initially was identified for Soils in the study area consist mainly of the sampling but later was determined to be an abandoned Houston Black-urban land complex. This complex is sanitary sewer outfall. Characteristics of fixed and grab made up of deep, moderately well drained, gently slop sites are listed in table 1. ing clay soils and areas of urban land. Houston Black Instrumentation soil represents about 40 percent of the land area; urban land, which consists of areas of buildings and pave The five fixed sites were instrumented for auto ment, represents about 35 percent; and minor soils rep matic collection of stormwater samples. A 4- by 3- by resent the other 25 percent. A representative soil profile 4-foot (ft) metal gage house was installed at each site to of the Houston Black consists of 6 in. of very dark gray hold the sampling equipment and supplies. Precipita clay overlying 38 in. of black clay. The permeability of tion, in 0.01-in. increments, was measured by a tipping the Houston Black soil is very low (U.S. Department of bucket raingage that was attached to the gage house. Agriculture, Soil Conservation Service, 1980). The water elevation (stage) in a culvert or drainage
Characterization of Stormwater Runoff From the Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas, 1994-96 96°58'30" 96° 58' 96°57'30' 32° 45
32°44'30'
32044-
32°43'30"
Base from EnSafe/Allen & Hoshall written commun., 1996 Modified State Plane
EXPLANATION -^ Boundary of Naval Air Station and Naval Weapons Industrial Reserve Plant * Fixed site
Grab site
Figure 1. Location of study area and fixed and grab sites.
INTRODUCTION 3 Table 1. Characteristics of sites, Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas [in., inches; RCP, round concrete pipe; TANG, Texas Air National Guard; --, not applicable; CMP, composite pipe] Estimated Primary Station Station drainage Outfall Latitude Longitude land no. name area type use1 (acres)1 Fixed sites 08050040 NAS-1 32°44'15" 960 57'36" 28.4 36-in. RCP hangar and runway 08050150 NAS-2 32°44'30" 96o57'27" 22.5 42-in. RCP fuel farm, commercial 08050148 NAS-3 32°44'39" 96o57'38" 89.8 natural channel TANG hangar and runway, commercial 08050012 NWIRP-1 32°44'17" 960 58'38" 187.6 lagoon industrial 08050010 NWIRP-2 32°44'18" 96o58'23" 113.5 lagoon industrial Grab sites - GRAB-1 32°44'17" 96°57'35" 4.6 36-in. RCP commercial - GRAB-2 32°44'14" 960 57'35" 2.5 30-in. RCP commercial - GRAB^l 32°44'07" 96o 57'33" 7.4 36-in. RCP runway, commercial - GRAB-5 32°44'05" 96°57'39" 53.3 30-by48-in.CMP runway 1 From drainage maps, Ensafe/Allen & Hoshall, Memphis, Tenn. channel was measured with a Campbell SWD1 moni (1) Storm could not be preceded by more than 0.1 in. of toring system, which uses a self-calibrating pressure precipitation in the last 72 hours, and (2) storm had to transducer and gas bubbler. The discharge was com have a total precipitation of at least 0.1 in. puted using the measured stage and a theoretical equa Grab and composite samples were collected for tion based on the type of flow-control structure in the six storms at each of the five fixed sites.The grab sam culvert or drainage channel: A sharp-crested trapezoidal ples were collected as soon as possible after flow passed weir was installed at site NWIRP-1, existing concrete the flow-control structure. Sample bottles were filled by broad-crested weirs were used at sites NWIRP-2 and dipping the bottles into the flowing water by hand or by NAS-3, and Palmer-Bowlus flumes were installed in pumping water from the sampling line using a portable the culverts at sites NAS-1 and NAS-2. The accumu peristaltic pump if safety considerations prohibited lated runoff volume, in cubic feet, was computed by hand sampling. The grab samples were analyzed for multiplying the discharge, in cubic feet per second, by about 100 properties and constituents including specific the time step, in seconds. The SWD1 system triggered conductance, pH, water temperature, bacteria, selected an ISCO 3700 automatic sampler to collect a volume- trace elements, oil and grease, total phenols, and weighted composite sample after a prespecified volume selected volatile organic compounds (VOCs). The grab of flow had passed the flow-control structure. The sam samples were analyzed for these constituents for two pler line was teflon-lined tubing connected to a stainless principal reasons: (1) The tendency of some of these steel intake. The time, stage, precipitation, discharge, constituents to have varying concentrations after a short accumulated runoff volume, and composite sample period of time (generally less than 3 hours) because of times are stored in the Campbell CR-10 datalogger. The changing equilibriums, and (2) to characterize the first- site is powered by a deep-cycle 12-volt battery flush phase of runoff for comparison to the composite recharged by a solar panel. A storage module is used for sample. data backup in the event of power failure. Telephone Flow-weighted composite samples were col communication was established to all sites to provide lected by automatic samplers and by hand. The auto remote monitoring and data retrieval. matic samplers were triggered by the datalogger to Sampling Procedures and Constituents pump equal volumes (aliquots) for a specified volume of runoff for the duration of the storm (automatic com Stormwater samples were collected and analyzed posite aliquots). The hand-dipped composite aliquots only when the following precipitation criteria were met: were collected discretely by hand when the. sampler
Characterization of Stormwater Runoff From the Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas, 1994-96 triggered and later composited at the laboratory. The Quality Assurance and Quality Control composite sample was analyzed for about 220 proper ties and constituents including specific conductance, Stormwater sampling followed prescribed field pH, chemical oxygen demand (COD), biochemical and laboratory procedures outlined in a sampling and oxygen demand (BOD), major ions, suspended and analysis plan approved by the Texas Natural Resource dissolved solids, selected nutrients, selected trace ele Conservation Commission (TNRCC). Strict quality- ments, total organic carbon, VOCs, semivolatile assurance and quality-control (QA/QC) procedures organic compounds (SVOCs), organochlorine pesti cides, polychlorinated biphenyls, and organophospho- were followed during the study. Chain-of-custody rus pesticides. The hand-dipped composite aliquots forms were used for processing and shipment of sam were used for analysis of VOCs and toxicity. The auto ples. Field blanks1 were used to test the sampling equip matic composite aliquots were used for analysis of the ment for organic contamination. Trip blanks2 were used remaining constituents. to determine if contamination of the VOC samples Grab samples were measured for specific conduc occurred during transit, and laboratory blanks were tance, pH, and temperature in the field during the storm. used to determine if contamination of the organic sam Grab samples were analyzed for bacteria (fecal coliform ples occurred in the field laboratory during sample com and fecal streptococcus), and composite samples were positing. Replicate samples (collected at the same time analyzed for specific conductance, pH, alkalinity, and and using the same protocols as the environmental sam BOD at the USGS Fort Worth Subdistrict laboratory. Grab samples were analyzed for oil and grease and total ples) were collected to check the precision of the labo phenols, and composite samples were analyzed for ratory analyses. Spike samples3 were used to determine COD, major ions, suspended and dissolved solids, total the extent, if any, of the effect of the sample matrix on organic carbon, and SVOCs at the USGS National the accuracy of the analysis. Reference samples (nutri Water Quality Laboratory (NWQL) in Arvada, Colo. ent and inorganic constituents with known concentra Grab samples were analyzed for trace elements and tions) were used to determine the analytical accuracy of VOCs, and composite samples were analyzed for nutri the laboratory. The NWQL, Quanterra Laboratory, and ents, trace elements, VOCs, and organochlorine and organophosphorus pesticides at Quanterra Laboratory Bio-Aquatics Testing Laboratory followed similar in Arvada. The grab and composite samples collected at QA/QC procedures. each of the five sites during the last two storms were analyzed for trace elements and VOCs at the NWQL. Acknowledgments Grab samples were collected at each of the four grab sites during two storms and were analyzed for Jay Spence, Ensafe/Alien & Hoshall, provided about 80 constituents including specific conductance, drainage maps for the NAS and NWIRP. The toxicity pH, water temperature, trace elements, and VOCs. The results were analyzed by J. Brace Moring, USGS. grab samples were collected by hand at the outfall. Spe The following USGS employees collected and pro cific conductance, pH, and temperature were measured cessed stormwater samples during this study: Jack D. in the field during the storm, and trace elements and Benton, Martin J. Danz, Brace R. Goddard, Bradley L. VOCs were analyzed at the NWQL. Mansfield, Darryl G. Pinion, Jeffrey T. Sandlin, Clyde Additional composite samples were collected T. Schoultz, J.M. Taylor, and David V. Tudor, Jr. during two of the six storms at the fixed sites and analyzed for toxicity to aquatic organisms. Two 1A constituent-free solution that is subjected to all aspects of ambient toxicity tests were used: 7-day fathead minnow sample collection, field processing, preservation, transportation, (Pimephales promelas) growth and survival tests, and and laboratory handling as an environmental sample. 7-day water flea (Ceriodaphnia dubid) larval repro A constituent-free solution that is put in the same type of bottle used for an environmental sample and kept with the set of duction and survival tests. The hand-dipped composite sample bottles both before and after sample collection. aliquots for toxicity analysis were composited and 3A sample to which known concentrations of specific constit analyzed at the Bio-Aquatic Testing Laboratory in uents have been added in such a manner as to minimize the change Carrolton, Tex. in the matrix of the original sample.
INTRODUCTION CHARACTERIZATION OF STORMWATER Celsius (°C) for the storm sampled on March 27,1996, RUNOFF to 27.5 °C for the storm sampled on September 18, 1995. Boxplots showing range and distribution of COD Storm Data and BOD for the five sites (fig. 7) indicate that COD ranges from 11 to 110 milligrams per liter (mg/L) and Water samples were collected for six storms at BOD ranges from 1.0 to 19 mg/L. Median COD and each of the five fixed stormwater monitoring sites from BOD are largest at site NAS-2. Hardness ranges from October 1994 to March 1996. The storm characteristics 11 to 120 mg/L as calcium carbonate (CaCO3), and are listed in table 2. Of the 30 storms, 12 storms were alkalinity ranges from 12 to 150 mg/L as CaCO3 at the sampled in the fall months of September through five sites. Hardness and alkalinity are smallest at site November, 6 storms were sampled in the winter months NAS-1 and largest at site NWIRP-2. of December through February, 12 storms were sam Boxplots showing range and distribution of fecal pled in the spring months of March through May, and no coliform and fecal streptococcus bacteria densities indi storms were sampled during the summer months of cate large variations at each of the five sites (fig. 8).The June through August. More than one-half of the 30 sam largest range in fecal coliform density, 860 to 900,000 ples were collected in March (9) and November (7). The colonies per 100 milliliters (cols./100 mL), is at site total precipitation per storm ranges from 0.12 to 1.58 NAS-2. The largest range in fecal streptococcus den in., and the maximum 5-minute intensity ranges from sity, 320 to 1,700,000 cols./100 mL, is at site NAS-1. 0.03 to 0.43 in. for the 30 storms. The antecedent dry The largest median bacteria densities are at site NAS-2, period ranges from 3 to 17 days. The runoff duration and the smallest median bacteria densities are at site ranges from 70 to 515 minutes, and total runoff ranges NWIRP-2. Median fecal coliform densities are compa from 7,050 to 518,000 cubic feet (ft3). The number of rable to the fecal streptococcus densities at each of the automatic composite aliquots ranges from 2 to 33, and five sites. the number of hand-dipped composite aliquots ranges Major ions in the composite samples primarily from 2 to 15. are calcium, sodium, and sulfate (tables 3-7). On the The hydrographs for the 30 storms are shown in basis of anion and cation balances from the laboratory figures 2-6. The hydrographs show the accumulated analyses, the stormwater type primarily is calcium precipitation, discharge, and grab and composite sam carbonate. ple times for each storm. The suspended solids and dissolved solids con Stormwater-Quality Data centrations range from less than the analytical detection limit of 1 to 192 mg/L and from 17 to 242 mg/L, respec Water samples for chemical analysis were col tively, at the five sites (tables 3-7). Boxplots showing lected for six storms at each of the five fixed sites and range and distribution of suspended and dissolved sol two storms at each of the four grab sites. Water samples ids (fig. 9) indicate that the largest range in suspended for toxicity analysis were collected for two of the six solids concentrations is at site NAS-3 and the largest storms at each of the five fixed sites. range in dissolved solids concentrations is at site NWIRP-2. The median dissolved solids concentrations Chemical Data are greater than median suspended solids concentra Fixed Sites tions for each of the five sites. Concentrations of total nitrite plus nitrate nitro The stormwater-quality data at the five fixed sites gen range from 0.059 to 1.4 mg/L (tables 3-7), and con are listed in tables 3-7 (at end of report). Specific con centrations of total Kjeldahl nitrogen range from less ductance at the five sites ranges from 54 to 1,160 micro- than the analytical detection limit of 0.5 to 2.9 mg/L at siemens per centimeter at 25 degrees Celsius (|nS/cm) in the five sites (tables 3-7). Boxplots showing range and the grab samples and from 27 to 401|nS/cm in the com distribution of total nitrite plus nitrate and total Kjeldahl posite samples. The pH ranges from 6.8 to 8.3 in the nitrogen (fig. 10) indicate that the largest range in total grab samples and from 6.6 to 8.0 in the composite sam nitrite plus nitrate nitrogen concentrations is at site ples. Specific conductance and pH generally are larger NAS-3 and the largest range in total Kjeldahl nitrogen in the grab samples than in the composite samples at the concentrations is at site NAS-2. Median concentrations five sites. Water temperature ranges from 9.0 degrees of total nitrite plus nitrate and total Kjeldahl nitrogen
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Figure 9. Range and distribution of suspended and dissolved solids concentrations.
o.u 6
cc . UJ2.5 - - 13 - CC UJ - 0_ . EXPLANATION §2.0 - > ; Kjeldahl nitrogen Nitrite plus nitrate ,t / 6 Number of samples ^ * / O nitrogen '* / _j ^ Outlier data value from 1.5 to 3 times _j r ^ 21.5 - 6 (i' / 6 the interquartile range beyond the box z / / Data value less than or equal to 1.5 times z" ^ / I T 6 : the interquartile range beyond the box o / * 6 / 75th percentile §1.0 - ^ Interquartile I /i< / 6 Median (50th percentile) range 1- / / < ^ PR C 25th percentile /(i / n ra 6 LiJ ! O 6 t / H W c * z / "" * OQ.5 _^ o
- r ^ i n NAS-1 NAS-2 NAS-3 NWIRP-1 NWIRP-2
Figure 10. Range and distribution of total nitrite plus nitrate and total Kjeldahl nitrogen concentrations.
CHARACTERIZATION OF STORMWATER RUNOFF 13 Table 2. Characteristics of storms and samples collected at fixed sites, Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas
[in., inches; ft3, cubic feet] Runoff Composite samples Total Maximum Antecedent Grab- No. of Toxicity Storm precipi- 5-minute sample No- of dry period Begjn End Duration Volume hand- sample date tation intensity time automatic (days) time time (minutes) (ft3) dipped collected (in.) (in.) aliquots aliquots NAS-1 01/26/95 0.66 0.09 3 0940 1200 140 43,300 0943 16 7 NO 03/12/95 .15 .04 4 1900 2200 180 9,700 1912 5 4 NO 03/25/95 .89 .29 9 1630 1915 165 61,600 1635 16 7 NO 04/10/95 1.08 .24 3 1425 1700 155 71,600 1430 18 9 NO 09/18/95 .39 .07 5 1800 2115 195 29,700 1810 9 10 YES 12/08/95 .29 .04 17 0255 1130 515 23,300 0512 5 5 YES NAS-2 11/02-03/94 .28 .07 7 2349 0200 131 13,500 2355 6 5 YES 11/09/94 .57 .08 4 0540 0930 230 33,000 0620 14 7 NO 01/12/95 .19 .05 5 1727 2130 243 7,050 1740 3 5 NO 05/31-06/01/95 1.58 .38 4 2039 0030 231 78,300 2040 33 15 NO 09/18/95 .48 .06 5 1750 2115 205 14,700 1800 7 8 YES 03/27/96 .67 .04 9 1305 1915 370 41,800 1307 19 11 NO NAS-3 10/15/94 .12 .07 6 0120 0950 510 25,900 0223 2 2 NO 11/09/94 .44 .06 4 0645 0930 165 135,000 0600 10 5 YES 03/12/95 .16 .03 4 1900 2230 210 34,400 1900 4 4 NO 03/25/95 .21 .07 9 1635 1745 70 52,300 1632 4 4 NO 12/08/95 .26 .05 17 0300 1130 510 62,100 0521 4 4 YES 03/27/96 .70 .04 9 1305 1915 370 122,000 1345 8 7 NO NWIRP-1 11/09/94 .48 .08 4 0540 1000 260 230,000 0543 8 5 YES 11/14/94 .34 .08 4 1120 1400 160 107,000 1130 4 5 NO 03/25/95 1.08 .43 9 1640 2000 200 518,000 1642 16 9 NO 04/17-18/95 .45 .16 6 2242 0115 153 198,000 2242 7 7 NO 09/18/95 .43 .08 5 1810 2200 230 148,000 1815 5 6 YES 03/27/96 .66 .04 9 1310 1930 380 320,000 1400 11 8 NO NWIRP-2 11/09/94 .45 .06 4 0600 0900 180 187,000 0653 11 5 YES 11/14/94 .35 .09 4 1115 1330 135 153,000 1120 12 5 NO 01/12/95 .17 .05 5 1730 2100 210 39,000 1733 3 4 NO 01/26/95 .22 .07 3 0940 1100 80 89,100 0950 6 4 NO 09/18/95 .35 .05 5 1805 2115 190 79,300 1810 6 7 YES 03/27/96 .58 .04 9 1305 1915 370 171,000 1345 13 9 NO
14 Characterization of Stormwater Runoff From the Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas, 1994-96 are comparable for each of the five sites. Total phospho that exceed the MCL of 5 ug/L (micrograms per liter) rus concentrations range from less than the analytical 6 and 9 ug/L in grab samples collected at site NAS-1 detection of 0.05 to 0.35 mg/L, and dissolved phospho and 6 ug/L in a grab sample collected at site NWIRP-1 rus concentrations range from less than the analytical (tables 3, 6). detection limit of 0.05 to 0.20 mg/L at the five sites Eleven trace elements of the 14 detected at the (tables 3-7). The largest total phosphorus concentration five sites have an effluent limit (table 10 at end of is at site NWIRP-1 (table 6), and the largest dissolved report) for the discharge of hazardous metals into phosphorus concentration is at site NAS-2 (table 4). inland waters established by the Texas Natural Less than one-half of all concentrations of total and Resource Conservation Commission (1986). All con dissolved phosphorus are greater than the analytical centrations of the 11 trace elements in grab and com detection limit. The most concentrations of total and posite samples are less than the effluent limits (tables dissolved phosphorus greater than the analytical detec 3-7). All lead concentrations in grab samples are less tion limit are at site NAS-2 (table 4). than the effluent limit for the discharge of water con The number of trace element detections in grab taining other petroleum substances (table 11 at end of and composite samples collected at the five fixed sites report) established by the Texas Natural Resource are listed in table 8 (at end of report). Of the 21 trace ele Conservation Commission (1988). ments analyzed, 14 are in concentrations greater than the Total organic carbon concentrations at the five analytical detection limit in either a grab or composite sites (tables 3-7) range from 2.5 mg/L at site NAS-1 to sample. All concentrations of antimony, beryllium, 33 mg/L at site NAS-2. Oil and grease concentrations cobalt, cyanide, selenium, thallium, and vanadium are range from less than the analytical detection limit of less than the analytical detection limits (tables 3-7). Img/L at all sites to 11 mg/L at site NAS-1. The con Aluminum, iron, manganese, and zinc are the most fre centrations of phenols range from less than the analyti quently detected trace elements. Concentrations of cal detection limit of 1 ug/L at most sites to 18 ug/L at arsenic, cadmium, chromium, copper, lead, and nickel site NAS-2. Concentrations of oil and grease and phe are more frequently detected for the last two storms nols for the six storms at site NWIRP-2 were mostly because of the lower analytical detection limits used for smaller than concentrations for storms at the other sites. those samples. Only one detection of mercury was The number of detections of VOCs, S VOCs, and measured in a grab sample collected at site NAS-1 organophosphorus pesticides for the five sites are listed (table 3), and one detection of silver was measured in a in table 8. Of the 74 VOCs analyzed, 26 were detected grab sample collected at site NWIRP-1 (table 6). A few in concentrations at or greater than the respective ana detections of barium and molybdenum were measured lytical detection limit. Dichloroethylenes, trichloro- in grab and composite samples collected at sites ethylene, benzenes, toluene, xylenes, and naphthalene NWIRP-1 and NWIRP-2 (tables 6-7). are detected most frequently. Most detections of ben The total number of trace element detections in zenes, toluene, xylenes, and naphthalene are at site grab and composite samples collected at the five sites NAS-2. Most of the VOCs detected at sites NAS-1 and are shown in figure 11. The number of detections are NAS-3 are at or near the analytical detection limit. comparable for grab and composite samples collected at Dichloroethylenes and trichloroethylene were detected each of the five sites. The trace element concentrations at sites NWIRP-1 and NWIRP-2. The total number of of the grab samples generally exceed the concentrations VOCs detected in grab and composite samples for the of the composite samples (tables 3-7). The larger trace five sites are shown in figure 12. Site NAS-2 has sub element concentrations during the first-flush phase of stantially more VOC detections than the other four sites. runoff (characterized by the grab sample) are diluted by The number of VOC detections in composite samples at subsequent runoff throughout the remainder of the sites NAS-1, NAS-2, and NAS-3 is more than 2 times storm (characterized by the composite sample). the number of detections in grab samples. The number Five trace elements (arsenic, barium, cadmium, of VOC detections in grab and composite samples are chromium, and mercury) of the 14 detected at the five comparable at sites NWIRP-1 and NWIRP-2. Concen sites (table 9 at end of report) have a maximum contam trations of benzenes, toluene, and xylenes in the com inant level (MCL) established by the U.S. Environmen posite samples at site NAS-2 generally exceed the tal Protection Agency (1996). Of these five trace concentrations in the grab samples (table 4). Concentra elements, only cadmium was detected in concentrations tions of dichloroethylenes and trichloroethylene in the
CHARACTERIZATION OF STORMWATER RUNOFF 15 40
Grab samples 35 Composite samples
IUJ 30 _ UJ UJ 25
CO O 20 c3 UJ 15
O tr 10
z
NAS-1 NAS-2 NAS^S NWIRP-1 NWIRP-2
Figure 11. Number of detections for trace elements.
co 40 o z ID O «c Grab samples Q_ OO Composite samples
| 30 2tr 2S
O 20 co"
UJ UJ o 10 u. o tr UJ m
NAS-1 NAS-2 NAS-3 NWIRP-1 NWIRP-2
Figure 12. Number of detections for volatile organic compounds.
16 Characterization of Stormwater Runoff From the Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas, 1994-96 grab samples at sites NWIRP-1 and NWIRP-2 gener was insufficient to collect composite samples. Precipi ally exceed the concentrations in the composite samples tation, discharge, and runoff-volume data were not col (tables 6-7). lected at the grab sites. Specific conductance ranges An MCL has been established for 9 VOCs of the from 36 to 724 u,S/cm, pH ranges from 7.9 to 8.4, and 26 detected in a least one grab or composite sample at water temperature ranges from 24.0 to 26.0 °C at the the five sites. Concentrations of two VOCs exceed the four sites. respective MCL (table 9) trichloroethylene in four The total number of detections of trace elements grab and four composite samples at site NWIRP-1 and and VOCs in the four grab sites are listed in table 13 (at in four grab and two composite samples at site NWIRP- end of report). Concentrations of 8 of the 11 trace ele 2; and benzene in one grab and four composite samples ments analyzed are greater than the analytical detection at site NAS-2. Although substantial concentrations limit. Beryllium, selenium, and silver were not detected. (compared to the analytical detection limit) of toluene Copper, lead, and zinc were detected in both samples at and xylenes were detected at site NAS-2, the concentra all sites. Cadmium, chromium, and nickel were detected tions are 1 and 2 orders of magnitude, respectively, less in both samples at every site except site GRAB-5. than the MCL. The number of detections of benzene Arsenic was detected in one sample at site GRAB-1 and and total BTEX (benzene, toluene, ethylbenzene, and two samples at site GRAB-2. Mercury was detected in xylene) in grab samples that exceed effluent limits for one sample at site GRAB-5. Only one trace element discharge of water containing other petroleum sub concentration exceeds its MCL at the four grab sites. A stances established by the Texas Natural Resource Con cadmium concentration of 9.0 u,g/L at site GRAB-4 servation Commission (1988) are listed in table 11. One (table 12) exceeds the MCL of 5.0 u,g/L. Trace element benzene concentration in a grab sample at site NAS-2 concentrations at the four grab sites did not exceed the (63 u,g/L, table 4) exceeds the effluent limit of 50 u,g/L. effluent limits for discharge of hazardous metals into Of the 57 S VOCs analyzed in composite samples, inland waters listed in table 10 or the effluent limits for 6 were detected in concentrations greater than the discharge of water containing other petroleum sub analytical detection limit (table 8). One detection of stances listed in table 11. bis(2-ethylhexyl)phthalate, a common lab contaminant, Concentrations of 5 VOCs of the 63 analyzed is at site NAS-1 (table 3). Two detections of naphtha in grab samples collected at the four grab sites exceed lene, one detection of 2,4-dimethylphenol, and one the analytical detection limits (table 13). Concentra detection of phenol are at site NAS-2 (table 4). Two tions of l,l,2-trichloro-l,2,2-trifluoroethane were detections of benzidine and one detection of fluoran- slightly greater than the analytical detection limit in thene are at site NAS-3 (table 5). SVOCs were not one sample each at sites GRAB-1 and GRAB-2. detected at sites NWIRP-1 and NWIRP-2 (tables 6-7). Methylene chloride, a common lab contaminant, was None of the 27 organochlorine pesticides and detected in one sample at each of the four sites. The polychlorinated biphenyls analyzed in composite sam remaining three VOCs were detected at site GRAB-2 ples at each of the five sites were detected. Of the 24 1,1-dichloroethane and dibromochloromethane in one organophosphorus pesticides analyzed in composite sample and chloroform in both samples. VOC concen samples, 2 were detected in concentrations greater than trations at the four grab sites did not exceed any MCL the analytical detection limit (table 8) diazinon in one listed in table 9 or the effluent limits for discharge of sample at site NAS-2 and stirophos in one sample at water containing other petroleum substances listed in site NAS-2 and two samples at site NAS-3. table 11.
Grab Sites Quality Assurance and Quality Control
Stormwater-quality data for grab samples col Field blank samples analyzed for major ions lected at the four grab sites during two storms (Septem indicate only one sample collected at NAS-1 on May ber 18,1995, and October 2,1995) are listed in table 12 26,1995, with a concentration of 0.26 mg/L dissolved (at end of report). Samples also were collected at four of calcium. A field blank at site NWIRP-1 analyzed for the five fixed sites during the September storm. Samples trace elements on May 26,1995, and associated with a were not collected at fixed sites during the October sample collected on April 17,1995, has trace element storm because the runoff from 0.15 in. of precipitation detections only of iron (58 |lg/L) and zinc (82 |lg/L).
CHARACTERIZATION OF STORM WATER RUNOFF 17 Detections of iron and zinc in the environmental sample Toxicity Data are 3,700 and 16 H-g/L, respectively. The zinc concentra tion is substantially less in the environmental sample Water samples for toxicity analysis were col than in the field blank. VOCs were not detected in a trip lected during two of the six storms sampled at each of blank. The field blanks analyzed for VOCs are rela the five fixed sites. The results of the toxicity analysis tively free of organic compounds. A chloroform con are listed in table 14 (at end of report). A lowest observ centration of 9.8 (ig/L was measured in a field blank able effects concentration (LOEC) and no observable collected on February 9,1995, at site NAS-2; however, effects concentration (NOEC) were determined for each all environmental samples have no detectable chloro test. The LOEC is the lowest percent concentration of form concentrations. Concentrations of several benzene environmental water in a dilution series that affects compounds range from 6.9 to 69 (ig/L in the field blank survival and growth or reproduction of selected aquatic collected at site NAS-2 on February 9,1995. Sampler organisms. The NOEC is the next lower percent con lines were replaced at this site before the next sample centration in a dilution series below the LOEC. A was collected. The site was retested and VOCs were not dilution series is a series of tests in which the environ detected. Sampler lines were replaced at NAS-2 after mental water is diluted with a control water of known each storm for the remainder of the project. Site properties, as prescribed in U.S. Environmental Protec NAS-2 was the only site where VOCs were detected in tion Agency (USEPA) Method 1000.0 for fathead min the field blank. The sample lines probably were contam nows and USEPA Method 1002.0 for water fleas inated during the storm of January 12,1995, on the (Weber and others, 1989). A Fisher's Exact Test (Zar, basis of detections of several benzene compounds in 1984) was used to test for a significant difference in concentrations less than the analytical detection limit in observable effects between the control and any of the the two previous samples. SVOCs, organochlorine pes test concentrations. ticides, and organophosphorus pesticides were not No significant differences were indicated for the detected in field blanks. fathead minnow or water flea tests in the first sample at site NAS-1 (table 14). A significant difference between COD in replicate samples varies from corre the control and the 13-, 25-, 50-, and 100-percent test sponding environmental samples by 11 to 28 mg/L. concentrations was indicated for the water flea repro Concentrations of major ions and nutrients in replicate duction test for the second sample. samples are comparable with corresponding environ No significant differences were indicated for the mental samples. The largest variation between replicate fathead minnow or water flea tests in the first sample samples and environmental samples is in trace ele at site NAS-2 (table 14). A significant difference ments, especially in grab samples. Trace element con between the fathead minnow control and the 50- and centrations in composite sample replicates vary from 100-percent test concentrations for growth was indi environmental samples by 0 to 20 (ig/L. In the Novem cated for the second sample. Also in the second sample, ber 9,1994, grab sample collected at site NAS-2, a significant difference was indicated in water flea replicate and environmental concentrations were: for reproduction between the control and the 25-, 50-, and aluminium, 200 and 260 ^ig/L; for iron, 330 and 680 100-percent test concentrations and in water flea sur (ig/L; for manganese, 34 and 89 |ig/L; and zinc, 37 and vival between the control and the 50- and 100-percent 86 (ig/L. Total organic carbon in replicate samples var test concentrations. ies from the corresponding environmental samples by No significant differences were indicated for the 1.2 to 5.0 mg/L. Organochlorine and organophosphorus fathead minnow or water flea tests in the first sample at pesticides were not detected in the replicate and envi site NAS-3. A significant difference in water flea repro ronmental samples. duction between the control and the 13-, 25-, 50-, and Results of analyses of the spiked VOC samples 100-percent test concentrations was indicated in the are within acceptable levels. Reference samples were second sample. submitted to field personnel for specific conductance, One significant difference in the fathead minnow pH, and alkalinity analysis and to the laboratory for growth between the control and the 100-percent test nutrient analysis. Concentrations in reference samples concentration in the second sample was indicated at site are within an acceptable range of most probable value NWIRP-1. One significant difference in the water flea concentrations. reproduction between the control and the 50-percent
18 Characterization of Stormwater Runoff From the Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas, 1994-96 test concentration was indicated in the first sample at Computation of Storm Loadings for Selected site NWIRP-2 but was not supported by a significant Constituents difference result at the 100-percent test concentration. Storm loadings, in pounds, can be computed for Event-Mean Concentrations of Selected each fixed site from the storm composite concentration Constituents of any constituent listed in tables 3-7 by multiplying the runoff volume, in cubic feet (table 2), by the con Median EMCs of 12 selected constituents were stituent storm composite concentration, in milligrams computed for the five fixed sites and compared with the per liter (or micrograms per liter), by 6.24 X 10 (or 6.24 X 10"8), units conversion factors. The storm load EMCs computed from the Dallas-Fort Worth (DFW) ing can be divided by the drainage area to compute the area National Pollutant Discharge Elimination System constituent yield per unit area. (NPDES) data (Stanley Baldys III, U.S. Geological Sur vey, written commun., 1993) and the Nationwide Urban Runoff Program (NURP) data (U.S. Environmental SUMMARY Protection Agency, 1983). The DFW NPDES and NURP data are grouped by major land use. The median The characterization of stormwater runoff from the NAS and the NWIRP is necessary to determine if EMCs of each selected constituent for the 30 samples at runoff from the facilities is contributing to off-site the NAS and NWIRP, each land use for the DFW contamination of surface waters. A network of five NPDES data, and each land use for the NURP data are fixed sites and four grab sites was established to sample listed in table 15 (at end of report). stormwater runoff from a substantial part of the drain The median EMCs of COD, BOD, and suspended age area of each facility. The fixed sites were instru solids for the NAS and NWIRP are substantially mented to measure and store precipitation, stage, smaller than median EMCs for the four DFW NPDES discharge, and runoff-volume data and to collect flow- land uses and the two NURP land uses. The dissolved weighted composite samples during a storm. solids median EMC for the NAS and NWIRP is compa Grab and composite samples were collected for rable to the median EMCs for the DFW NDPES resi six storms at each of the five fixed sites from October dential and industrial land uses. Dissolved solids 1994 to March 1996. Grab samples were analyzed for concentrations were not measured during the NURP about 100 properties and constituents including specific study. The median EMC of total nitrite plus nitrate conductance, pH, water temperature, bacteria (fecal nitrogen for the NAS and NWIRP is comparable to the coliform and fecal streptococcus), trace elements, oil EMCs for the DFW NPDES residential and commercial and grease, total phenols, and VOCs. Composite land uses. The median EMC of total Kjeldahl nitrogen samples were analyzed for about 220 properties and for the NAS and NWIRP is comparable to the EMCs for constituents including specific conductance, pH, COD, the DFW NPDES commercial and industrial land uses. BOD, major ions, suspended and dissolved solids, Median EMCs of total phosphorus and dissolved phos nutrients, trace elements, total organic carbon, VOCs, phorus for the NAS and NWIRP are substantially SVOCs, organochlorine pesticides, chlorinated biphe- smaller than the median EMCs for the DFW NPDES nyls, and organophosphorus pesticides. Cadmium was detected in concentrations that exceed the MCL estab and NURP data. The median EMCs of selected trace lished by the USEPA in two grab samples collected at elements (cadmium, copper, lead, and zinc) for the NAS site NAS-1 and in one grab sample collected at site and NWIRP are comparable to the median EMCs for NWIRP-1. Trichloroethylene concentrations in four DFW NPDES residential and highway land uses. The grab and four composite samples collected at site median EMC of cadmium for the NAS and NWIRP also NWIRP-1 and in four grab and two composite samples is comparable to the median EMCs for DFW NPDES collected at site NWIRP-2 exceed the MCL. Benzene commercial and industrial land uses, and the median concentrations in one grab and four composite samples EMC of copper for the NAS and NWIRP also is compa collected at site NAS-2 exceed the MCL. The benzene rable to the median EMC for DFW NPDES commercial concentration in one grab sample collected at site land use. NAS-2 exceeds the effluent limit for discharge of water
SUMMARY 19 containing other petroleum substances established by are comparable to the DFW NDPES median EMCs for the TNRCC. selected land uses. Grab samples were collected for two storms (Sep Storm loadings and yields for each fixed site can tember 18, 1995, and October 2,1995) at each of the be computed from the composite concentration of any four grab sites and analyzed for about 80 constituents constituent, the runoff volume, and the contributing including specific conductance, pH, temperature, trace drainage area. elements, and VOCs. One cadmium concentration at site GRAB-4 exceeds the MCL. Trace element con REFERENCES CITED centrations at the four grab sites did not exceed effluent limits established by the TNRCC. VOC concentrations Texas Natural Resource Conservation Commission, 1986, did not exceed MCLs or effluent limits. Quality levels Inland waters: Austin, Tex., Texas Administrative Code, Title 30, chap. 319:319.22. Composite samples collected at the fixed sites ___1988, Discharge of water contaminated by other during two of the six storms were analyzed for toxicity petroleum substances: Austin, Tex., Texas Administra to aquatic life using the 7-day fathead minnow growth tive Code, Title 30, chap. 321:321.134. and survival tests and the 7-day water flea reproduction U.S. Department of Agriculture, Soil Conservation Service, and survival tests. Fathead minnow growth tests indi 1980, Soil survey of Dallas County, Texas: 153 p. cate significant toxicity in one sample each collected U.S. Department of Commerce, National Oceanic and at sites NAS-2 and NWIRP-1. Fathead minnow sur Atmospheric Administration, 1990, Climatological vival tests did not indicate significant toxicity in any data, annual summary, Texas, 1990: Asheville, N.C., samples. Water flea reproduction tests indicate signifi v. 95, no. 13, 77 p. cant toxicity in one sample each collected at sites U.S. Environmental Protection Agency, 1983, Results of NAS-1, NAS-2, and NAS-3. Water flea survival tests the Nationwide Urban Runoff Program Executive indicate significant toxicity in one sample collected at summary: U.S. Environmental Protection Agency Water site NAS-2. Planning Division, National Technical Information Service PB84-185545, 24 p. Median EMCs computed for 12 selected constit uents in samples from the NAS and NWIRP fixed sites ___1996, Maximum contaminant levels (part 141, natural primary drinking water regulations): Washington, were compared to the median EMCs for residential, D.C., U.S. Code of Federal Regulations, Title 40, commercial, industrial, and highway land use sites from parts 136-149, p. 288-429. the DFW NPDES data and for residential and commer Weber, C.I., and others, 1989, Short-term methods for cial land use sites from the NURP data. The NAS and estimating the chronic toxicity of effluents and NWIRP median EMCs for COD, BOD, suspended sol receiving waters to freshwater organisms (2d ed.): Cin ids, total phosphorus, and dissolved phosphorus are cinnati, Ohio, U.S. Environmental Protection Agency, substantially smaller than the DFW NPDES and NURP Environmental Monitoring Systems Laboratory, median EMCs. The NAS and NWIRP median EMCs EPA/600/4-89/001. for dissolved solids, total nitrite plus nitrate nitrogen, Zar, J.H., 1984, Biostatistical analysis (2d ed.): Englewood total Kjeldahl nitrogen, cadmium, copper, lead, and zinc Cliffs, N.J., Prentice Hall, Inc., 718 p.
20 Characterization of Stormwater Runoff From the Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas, 1994-96 Table 3. Stormwater chemical data at site NAS-1, Naval Air Station, Dallas, Texas [|iS/cm, microsiemens per centimeter at 25 °C; --, not analyzed; °C, degrees Celsius; mg/L, milligrams per liter; CaCO3, calcium carbonate; cols./100 mL, colonies per 100 milliliters; K, non-ideal colony count; <, less than; N, nitrogen; P, phosphorous; |ig/L, micrograms per liter]
Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 01/26/95 03/12/95 03/25/95 04/10/95 09/18/95 12/08/95 Property or constituent Com. Com. Com. Com Corn- Grab , Grab . Grab Grab . Grab Grab posite . posite . posite posite posite posite sample sample sample sample . sample sample sample sample sample sample sample sample Properties Specific conductance (uS/cm) 60 31 107 123 55 27 79 64 213 124 pH, water, whole, field (standard units) 7.8 7.3 8.0 7.5 6.7 6.8 8.0 7.8 7.7 7.7 Temperature, water (°C) 1 2.0 11.0 -- 21.5 - 13.0 -- 26.0 -- 12.0 Oxygen demand, chemical (high level) (mg/L) 11 - 29 52 14 29 43
Oxygen demand, biochemical, 5-day (mg/L) 1.0 - 5.0 11 2.6 4.1 7.2 Hardness, calculated (mg/L as CaCO3) 14 - 41 18 11 25 43 Alkalinity, water, dissolved, fixed-endpoint 17 -- 34 17 12 29 52 titration, field (mg/L as CaCO3) Bacteria Coliforms, fecal (cols./l 00 mL) 3,200 Kl,000 - 150,000 ~ 2,200 - 45,000 -- 1,300 Streptococci, fecal (cols./100 mL) 17,000 K320 - Kl,700,000 - 1,900 -- 7,700 -- 3,500 Major ions Calcium, dissolved (mg/L) 5.4 -- 15 6.7 4.3 9.6 16 Magnesium, dissolved (mg/L) .23 - .82 .24 .12 .33 .70 Sodium, dissolved (mg/L) 2.4 -- 8.2 2.9 1.2 3.1 5.7 Potassium, dissolved (mg/L) .90 -- 3.3 2.4 .90 2.1 3.4
Sulfate, dissolved (mg/L) 3.4 -- 15 6.7 2.1 5.2 16 Chloride, dissolved (mg/L) .60 -- 3.6 1.2 .40 1.0 2.4 Solids Residue, total at 105 °C, suspended (mg/L) <1 -- 10 22 . 10 <1 9 tf Solids, residue at 180 °C, dissolved (mg/L) 23 -- 81 37 17 39 66 Methylene chloride (^ig/L) <17 <17 <17 <17 <17 <17 <17 <17 <.2 .4 <.2 .3 Acetone (|0,g/L) <50 <50 <50 <50 <50 <50 <50 <50 - Carbon disulfide (|0,g/L) <5 <5 <5 <5 <5 <5 <5 <5 .. 1,1-Dichloroethylene (|4,g/L) <4 <4 <4 <4 <4 <4 <4 <4 <.2 <.2 <2 <.2 1 , 1 -Dichloroethane (|4,g/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 1,2-Dichloroethylene, total (|0,g/L) <5 <5 <5 <5 <5 <5 <5 <5 -- Chloroform (|0,g/L) 5.6 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 1,2-Dichloroethane (|J,g/L) <50 <50 <50 <50 <50 <50 <50 <50 <.2 <.2 <.2 <2 2-Butanone (|0,g/L) <5 <5 <5 <5 <5 <5 <5 <5 _. 1,1,1-Trichloroethane (|0,g/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 Carbon tetrachloride (|J.g/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 Bromodichloromethane (|J,g/L) 6.1 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 1,2-Dichloropropane (|0,g/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 trans-l,3-Dichloropropene (|0,g/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 Trichloroethylene (|0,g/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 Dibromochloromethane (|J.g/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 Table 3. Stormwater chemical data at site NAS-1, Naval Air Station, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 01/26/95 03/12/95 03/25/95 04/10/95 09/18/95 12/08/95 1994-96 Characterizatiol Property or constituent Com- Com Com Com- Corn- Corn- Grab Grab Grab Grab Grab Grab posite posite posite posite . posite posite sample sample sample sample sample sample sample sample sample sample sample sample _» 8. Volatile organic compounds Continued CO 1,1,2-Trichloroethane (|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 <0.2 <0.2 <0.2 <0.2 i Benzene (|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 1 cis-l,3-Dichloropropene (|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 3) 2-Chloroethyl vinyl ether (|ig/L) <100 <100 <100 <100 <100 <100 <100 <100 <1 <1 <1 <1 Tl Bromoform (|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 i 4-Methyl-2-pentanone (|ig/L) <50 <50 <50 <50 <50 <50 <50 <50 3 2,2-Dichloropropane (|ig/L) -- - ~ - ~ -- ~ - <.2 <.2 <.2 <.2 l,3-Dichloropropane(|ig/L) - - ~ - - ~ -- -- <.2 <.2 <.2 <.2 1, 2,4-Trimethylbenzene (pseudocumene) (|ig/L) ~ ~ ~ -- -- <.2 <.2 <.2 .9 Isopropylbenzene (|ig/L) ~ ~ ~ ~ « <.2 <.2 <.2 <.2 n-Propylbenzene (|ig/L) ------~ - ~ <.2 <.2 <.2 <.2 1,3,5-Trimethylbenzene (mesitylene) (|ig/L) ~ ~ ~ <.2 <.2 <.2 .3 2-Chlorotoluene (|ig/L) <2 4-Chlorotoluene (|ig/L) <.2 <.2 Bromochloromethane (|ig/L) <.2 <.2 n-Butylbenzene (|ig/L) <.2 <.2 <.2 sec-Butylbenzene (|ig/L) <.2 tert-Butylbenzene (|ig/L) <.2 <.2 p-Isopropyltoluene (|ig/L) <.2 <.2 1,1,1,2-Tetrachloroethane (^ig/L) <.2 <.2 1,2,3-Trichlorobenzene (|ig/L) <.2 <.2 <.2 <.2 1,2-Dibromomethane (|ig/L) <.2 <.2 1,1,2-Trichloro-1,2,2-trifluoroethane (|ig/L) .2 g- Methyl tert-butylether (|ig/L) .2 <.2 .2 w Bromobenzene (|ig/L) <.2 <.2 l,2-Dibromo-3-chloropropane (|ig/L) Table 3. Stormwater chemical data at site NAS-1, Naval Air Station, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 O _l » 01/26/95 03/12/95 03/25/95 04/10/95 09/18/95 12/08/95 S3 Property or constituent Com Com Com Com Com Com Grab Grab Grab Grab Grab Grab posite posite posite posite posite posite sample sample sample sample sample sample sample sample sample sample sample sample Volatile organic compounds Continued o-Chlorobenzene <0.2 <0.2 <0.2 <0.2 StormwaterRunoffFrom 1,2,4-Trichlorobenzene 1.3-Dichlorobenzene 1.4-Dichlorobenzene Naphthalene 1.6 Hexachlorobenzene Semivolatile organic compounds o-Chlorobenzene, water, unfiltered, recoverable <0.2 <0.2 <0.2 <0.2 (Hg/L) 1.3-Dichlorobenzene, water, unfiltered, <.2 S A recoverable (fig/L) O 1.4-Dichlorobenzene, water, unfiltered, recoverable (|ig/L) 1,2-Diphenylhydrazine, water, total recoverable <5 <5 <5 <5 <5 <5 (Hg/L) Hexachlorobutadiene, total (fig/L) | Naphthalene, total (fig/L) I 1,2,4-Trichlorobenzene, water, unfiltered, recoverable (fig/L) I£.' Acenaphthene, total (fig/L) <5 <5 <5 <5 <5 <5 3J Acenaphthylene, total (|ig/L) <5 <5 <5 <5 <5 <5 (D Anthracene, total (fig/L) <5 <5 <5 <5 <5 <5 2 I Benzidine, total (fig/L) <40 <40 <40 <40 <40 <40 o o> Benzo[a]anthracene, total (|ig/L) Table 3. Stormwater chemical data at site NAS-1, Naval Air Station, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 01/26/95 03/12/95 03/25/95 04/10/95 09/18/95 12/08/95 Property or constituent Corn- Corn- Corn- Corn- Corn- Corn- Grab Grab Grab Grab Grab Grab posite posite posite posite posite posite sample sample sample sample sample sample sample sample sample sample sample sample Semivolatile organic compounds Continued Benzo[a]pyrene, total (|4.g/L) Benzo[b]fluoranthene, total (|ig/L) Benzo[k]fluoranthene, total (|ig/L) Benzo[g,h,i]perylene, total (|ig/L) 4-Bromophenylphenol ether, total (|ig/L) <5 <5 <5 <5 <5 <5 n-Butyl benzyl phthalate, total (|ig/L) <5 <5 <5 <5 <5 <5 bis(2-Cnloroethoxy)methane, total (|4.g/L) <5 <5 <5 <5 <5 <5 bis(2-Chloroethyl) ether, total (Hg/L) <5 <5 <5 <5 <5 <5 bis(2-Cnloroisopropyl) ether, total (|4.g/L) <5 <5 <5 <5 <5 <5 p-Chloro-m-cresol, total (jJg/L) <30 <30 <30 <30 <30 <30 2-Chloronaphthalene, total (|4.g/L) <5 <5 <5 <5 <5 <5 2-Chlorophenol, total (|4.g/L) <5 <5 <5 <5 <5 <5 4-Chlorophenyl phenylether, total (|ig/L) <5 <5 <5 <5 <5 <5 Chrysene, total (|4.g/L) 1,2,5,6-Dibenzanthracene, total (|ig/L) 3,3'-Dichlorobenzidine, total (|ig/L) <20 <20 <20 <20 <20 <20 2,4-Dichlorophenol, total (Hg/L) <5 <5 <5 <5 <5 <5 Diethyl phthalate, total (|ig/L) <5 <5 <5 <5 <5 <5 Dimethylphthalate, total (jig/L) <5 <5 <5 <5 <5 <5 2,4-Dimethylphenol, total (Hg/L) <5 <5 <5 <5 <5 <5 Di-n-butyl phthalate, total (Hg/L) <5 <5 <5 <5 <5 <5 4,6-Dinitro-o-cresol, total (|ig/L) <30 <30 <30 <30 <30 <30 H 2,4-Dinitrophenol, total (|ig/L) <20 <20 <20 <20 <20 <20 0 eo 2,4-Dinitrotoluene, total (|4.g/L) <5 <5 <5 <5 <5 <5 i 0 £ in in in in p p p p o 52 E m oinin inininin o»ninin >noinin oininin o VVVV CO JO y O gj V '-' V V VVVV '-'VVV Vf^VV f^VVV <^ E § * V vvvv y vvv V V V "-S § It0 0 1 III ill! ! ! ! i ill! 1 1 ! 1 I 1 1 1 1 i 0 .2 in in in in E .t: a p p p p o * C_ m o>/*>in inin»nin oininin inoinin oininin o VVVV 10 « o S a ^VV VVVV ^VVV VfQVV <^VVV c^ - g * V 55o ^g .Q * iii i i i i i i i i i i i i i i i i i i i i i O IBto 0) in in in in P - "a. p p p p n W C m oinin inininin o»ninin inoinin oininin o VVVV 1 1 S * I V ^VV VVVV rp V V V V«^VV <^VVV *» § _^-- -^M^ N-' g> 2" '^^ ^M /*^ Cy "^ ^TT? "j *Tt ' ^J ^ Co tJ O /-N ^ -5 ^ '~^ /-N ^ 10 o 0 i 1 1 i ^ 1 1 1 | 5 S I 1 1 1 1 1 1 1 1 2^ 28 Characterization of Stormwater Runoff From the Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas, 1994-96 Table 3. Stormwater chemical data at site NAS-1, Naval Air Station, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 01/26/95 03/12/95 03/25/95 04/10/95 09/18/95 12/08/95 Property or constituent _ Corn- _ Corn- Corn- Com _ Corn- _ Corn- Grab Grab Grab . Grab Grab Grab posite posite posite posite posite posite sample sample sample sample sample sample sample sample sample sample sample sample Organochlorine pesticides/polychlorinated biphenyls Continued gamma-BHC (Lindane) (ug/L) <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 alpha-Chlordane (ug/L) <.50 <.50 <.50 <50 <50 <50 gamma-Chlordane (ug/L) <.50 <.50 <.50 <.50 <.50 <50 4-4'-DDD (ug/L) <.10 <.10 <.10 - <.10 <10 <.10 4-4'-DDE (ug/L) <.10 <.10 <.10 - <.10 <10 <10 4-4'-DDT (ug/L) <.10 <.10 <10 <.10 <.10 <10 Dieldrin (ug/L) <.05 <.05 <.05 <05 <.05 <05 Endosulfan I (ug/L) <.05 <.05 <.05 <05 <.05 <05 Endosulfan II (ug/L) <.10 <.10 <.10 - <.10 <10 <10 Endosulfan sulfate (ug/L) <.10 <.10 <.10 <.10 <10 <10 Endrin (ug/L) <.06 <.06 <.06 <.06 <06 <.06 Endrin aldehyde (ug/L) <.10 <.10 <10 - <.10 <10 <10 Heptachlor (ug/L) <.05 <.05 <.05 <.05 <.05 <.05 Heptachlor epoxide (ug/L) <05 <.05 <.05 <.05 <.05 <.05 Methoxychlor (ug/L) <.50 <50 <.50 <.50 <50 <.50 Toxaphene (ug/L) PCB Aroclor 1016 (ug/L) PCB Aroclor 1221 (ug/L) PCB Aroclor 1232 (ug/L) PCB Aroclor 1242 (ug/L) PCB Aroclor 1248 (ug/L) H PCB Aroclor 1254 (ug/L) w PCB Aroclor 1260 (ug/L) Table 3. Stormwater chemical data at site NAS-1, Naval Air Station, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 01/26/95 03/12/95 03/25/95 04/10/95 09/18/95 12/08/95 1994-96 Characterizatiol Property or constituent _ . Corn- Com ^ ^ Com- _ . Corn- _ . Corn- Grab Grab Grab Grab . Grab Grab posite posite posite posite . posite posite sample sample sample sample sample sample sample sample sample sample sample sample _i Organophosphorus pesticides ? Azinophos-methyl (guthion) (|ig/L) <2.5 <2.5 <2.5 <2.5 <2.5 Bolstar (sulprofos) (|ig/L) <.50 <.50 <.50 <.50 <.50 I Chlorpyrifos (dursban) (|ig/L) <.25 <.25 <.25 <.25 <.25 31 C Coumaphos (|ig/L) <.50 <.50 <.50 <.50 <.50 1 Demeton O&S (Hg/L) <.25 <.25 <.25 <.25 <.25 i Diazinon (|ig/L) <.25 <.25 <.25 <.25 <.25 (D Dichlorvos (vapona) (|ig/L) <.50 <.50 <.50 <.50 <.50 Dimethoate (|ig/L) <.50 <.50 <.50 <.50 <.50 I s Dosulfoton (Hg/L) <.25 <.25 <.25 <.25 <.25 go' Ethoprop (Hg/L) <.25 <.25 <.25 <.25 <.25 Fensulfothion (|ig/L) <2.5 <2.5 <2.5 <2.5 <2.5 B Q. Fenthion (baytex) (|ig/L) <.25 <.25 <.25 <.25 <.25 z I Malathion (|ig/L) <1.2 <1.2 <1.2 <1.2 <1.2 g8 Merphos (|ig/L) <.25 <.25 <.25 <.25 <25 o Mevinphos (phosdrin) (|ig/L) <6.2 <6.2 <6.2 <6.2 <6.2 (0 Naled (dibrom) (|ig/L) <10 <10 <10 <10 <10 Q. C (0 £." Ethyl parathion (|ig/L) <.25 <.25 <.25 <.25 <.25 31 Methyl parathion (|ig/L) <.25 <.25 <.25 <.25 <.25 S (D Phorate (thimet) (|ig/L) <.25 <.25 <.25 <.25 <.25 (D Ronnel (|ig/L) <25 <.25 <.25 <.25 <.25 TJ B J* Sulfotepp (|ig/L) <.25 <.25 <.25 <.25 <.25 B 5" Stirophos (tetrachlorovinphos) (|ig/L) <2.5 <2.5 <2.5 <2.5 <2.5 (0 Tokuthion (prothiophos) (|ig/L) <.25 <.25 <.25 <.25 <.25 ifa Trichloronate (|ig/L) <.25 <.25 <.25 <.25 <.25 Table 4. Stormwater chemical data at site NAS-2, Naval Air Station, Dallas, Texas [|iS/cm, microsiemens per centimeter at 25 °C; --, not analyzed; °C, degrees Celsius; mg/L, milligrams per liter; CaCO3, calcium carbonate; cols./100 mL, colonies per 100 milliliters; K, non-ideal colony count; N, nitrogen; <, less than; P, phosphorous; |lg/L, micrograms per liter] Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/02-03/94 11/09/94 01/12/95 05/31-06/01/95 09/18/95 03/27/96 Property or constituent Com Com Corn- ^ ^ Com- ^ ^ Corn- Grab Grab . Grab Grab Grab Grab posite posrte posite posite posite . posite sample sample . sample sample sample sample sample sample sample sample sample sample Properties Specific conductance (uS/cm) 283 171 276 107 207 219 489 82 134 65 pH, water, whole, field (standard units) 8.3 6.6 7.4 7.2 7.3 8.3 7.2 7.9 6.8 8.3 7.1 Temperature, water (°C) 20.5 ~ 20.5 -- 18.0 ~ 22.0 25.5 -- 10.0 ~ Oxygen demand, chemical (high level) (mg/L) 85 31 100 22 110 85 Oxygen demand, biochemical, 5-day (mg/L) 8.6 5.4 8.3 4.1 7.4 7.8 Hardness, calculated (mg/L as CaCO3) 57 38 66 30 35 27 Alkalinity, water, dissolved, fixed-endpoint 61 40 69 26 33 33 titration, field (mg/L as CaCO3) Bacteria Coliforms, fecal (cols./l 00 mL) 47,000 - 22,000 - K860 ~ K13,000 900,000 ~ 9,700 ~ Streptococci, fecal (cols./100 mL) 2,800 - 48,000 ~ 6,200 - 10,000 26,000 - 12,000 ~ Major ions Calcium, dissolved (mg/L) 21 14 24 11 13 10 Magnesium, dissolved (mg/L) 1.2 .76 1.4 .53 .53 .40 Sodium, dissolved (mg/L) 8.6 4.8 12 2.4 2.8 2.5 Potassium, dissolved (mg/L) 3.5 2.1 5.1 3.3 2.2 1.8 Sulfate, dissolved (mg/L) 10 6.1 17 9.4 6.0 7.3 Chloride, dissolved (mg/L) 5.3 3.0 5.5 3.1 1.7 2.3 Solids Residue, total at 105 °C, suspended (mg/L) 27 20 50 12 20 36 Solids, residue at 1 80 °C, dissolved (mg/L) 110 67 132 61 55 60 Table 4. Stormwater chemical data at site NAS-2, Naval Air Station, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/02-03/94 11/09/94 01/12/95 05/31-06/01/95 09/18/95 03/27/96 1994-96 Characterizatiol Property or constituent Com Com Com Com ^ . Com- ^ ._ Corn- Grab Grab Grab Grab Grab Grab posite posite posite posite posite . posite sample sample sample sample sample sample sample sample sample sample sample sample _» o K Nutrients O Nitrogen, nitrite plus nitrate, total (mg/L as N) -- 0.60 - 0.37 -- 0.51 - 0.39 0.48 -- 0.58 1 Nitrogen, Kjeldahl, total (mg/L as N) - 1.7 -- <.5 - .78 -- 2.9 .74 -- .91 1 Phosphorus, total (mg/L as P) -- .18 -- <.05 -- <.05 -- .24 .18 -- .25 30 Phosphorus, dissolved (mg/L as P) -- .17 -- <.05 -- <.05 -- -- .12 -- .20 i-n Trace elements 3 Aluminum, total (|ig/L) 1,500 510 260 520 4,200 1,600 1,900 240 440 -- 700 3 Antimony, total (^ig/L) <200 <200 <200 <200 <200 <200 <200 <200 <10 -- <10 (D Z Arsenic, total (|ig/L) <300 <300 <300 <300 <300 <300 <300 <300 4 <1 10 2 -- SI Barium, total (|ig/L) <100 <100 <100 <100 <100 <100 <100 <100 w Beryllium, total (|ig/L) <2 <2 <2 <2 <2 <2 <2 <2 <10 <10 <10 <10 I Cadmium, total (|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 2 <1 1 <1 o 3 Chromium, total (Hg/L) <30 <30 <30 <30 <30 <30 <30 <30 93 94 § Q. Cobalt, total (\LgfL) <40 <40 <40 <40 <40 <40 <40 <40 _. Z i Copper, total (|ig/L) 66 <30 <30 <30 32 <30 <30 <30 25 7 12 5 Cyanide, total (|ig/L) <10 ~ <10 <10 - <10 ~ <10 -- <10 g»0 Iron, total (|ig/L) 4,700 1,700 680 710 9,400 2,400 4,200 260 510 -- 880 (0 Lead, total (^ig/L) <200 <200 <200 <200 <200 <200 <200 <200 42 8 29 11 Q. Manganese, total (|ig/L) 680 78 89 32 780 87 740 26 30 -- 40 s~ £. Mercury, total (|ig/L) <2 <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.l <.l <.l <.l 3D Molybdenum, total (^ig/L) <40 <40 <40 <40 <40 <40 <40 <40 .. (02 Nickel, total (|ig/L) <40 <40 <40 <40 <40 <40 <40 <40 82 52 (D 0 0 Selenium, total (|ig/L) <400 <400 <400 <400 <400 <400 <400 <400 <1 <1 <1 <1 s Silver, total (^ig/L) <30 <30 <30 <30 <30 <30 <30 <30 <1 <1 <1 <1 a 5*SI Thallium, total (^ig/L) ~ ~ ~ <5 <5 <5 -- <10 « Vanadium, total (|ig/L) <40 <40 <40 <40 <40 <40 <40 <40 -- H (D Zinc, total (^ig/L) 340 130 86 43 460 180 350 34 380 70 250 90 (0s Table 4. Stormwater chemicallical data at site NAS-2, Naval Air Station, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/02-03/94 11/09/94 01/12/95 05/31-06/01/95 09/18/95 03/27/96 Property or constituent Com Com Com Com- Com- Corn- Grab Grab Grab Grab Grab Grab posite posite posite posite . posite . posite sample sample sample sample sample . sample sample sample sample sample sample sample Carbon Carbon, organic, total (mg/L) 31 9.2 -- 33 11 -- 17 -- 16 Organic compounds Oil and grease, total, gravimetric (mg/L) 4 1 - 6 Phenols, total (|ig/L) 2 4 -- 18 4 8 9 Volatile organic compounds Chloromethane (\Lg/L) Bromomethane (|ig/L) <10 <10 <10 <10 <10 <10 Vinyl chloride (|ig/L) Chloroethane (|ig/L) <10 <10 <10 <10 <10 <10 <10 <.2 <.2 <.2 <.2 Methylene chloride (|ig/L) <17 <17 <17 <17 <17 <17 <17 <17 <.2 .4 <.2 <.2 Acetone (|ig/L) <50 33 <50 <50 120 160 <50 <50 Carbon disulfide (jig/L) <5 <5 <5 <5 <5 <5 <5 <5 1,1-Dichloroethylene (|ig/L) <4 <4 <4 <4 <4 <4 <4 <4 <.2 <.2 <.2 <.2 1,1-Dichloroethane (|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 1,2-Dichloroethylene, total (|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 Chloroform (|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 1,2-Dichloroethane (|ig/L) <50 <50 <50 <50 <50 <50 <50 <50 <.2 <.2 <.2 <.2 2-Butanone Qig/L) <5 <5 <5 <5 <5 <5 <5 <5 1,1,1 -Trichloroethane Qig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 Carbon tetrachloride (|lg/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 Bromodichloromethane (|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 1,2-Dichloropropane (jig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 trans-l,3-Dichloropropene (|ig/L) 2 <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 (D Trichloroethylene (|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 Dibromochloromethane (|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 U U Table 4. Stormwater chemical data at site NAS-2, Naval Air Station, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/02-03/94 11/09/94 01/12/95 05/31-06/01/95 09/18/95 03/27/96 Characterizatiol Property or constituent Com Com Com Com ^ . Com- ^ . Corn- Grab Grab Grab Grab Grab Grab posite posite posite posite posite . posite sample sample sample sample sample . sample sample sample sample sample sample sample _> a Volatile organic compounds Continued w 8 1,1,2-Trichloroethane (Hg/L) <5 <5 <5 <5 <5 <5 <5 <5 <0.2 <0.2 <0.2 <0.2 3 Benzene (ng/L) <5 22 <5 <5 63 73 <5 <5 <.2 8 <.2 16 i cis-l,3-Dichloropropene (Hg/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 3D 2-Chloroethyl vinyl ether (ng/L) <100 <100 <100 <100 <100 <100 <100 <100 <1 <1 <1 <1 3 3 n Bromoform (Hg/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 0 3 4-Methyl-2-pentanone (Hg/L) <50 <50 <50 <50 <50 <50 <50 <50 3 D?S1. Chlorobenzene (Hg/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 O 3 Ethylbenzene (Hg/L) <5 14 <5 <5 20 21 <5 <5 <.2 27 <.2 30 D) a Trichlorofluoromethane (Hg/L) <10 <10 <10 <10 <10 <10 <10 <10 <.2 <.2 <.2 <.2 z D) 2. Xylenes, total (ng/L) 5.6 160 46 72 210 230 <5 24 1.8 270 <.2 220 Acrolein (ng/L) <60 <60 <60 <60 <60 <60 <60 <60 -- 1§ Acrylonitrile (ng/L) <25 <25 <25 <25 <25 <25 <25 <25 __ 3 w Dibromomethane (\ig/L) <10 <10 <10 <10 <10 <10 <10 <10 <.2 <.2 <.2 <.2 Dichlorodifluoromethane (Hg/L) Ethanol (|ig/L) Ethyl methacrylate (Hg/L) Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/02-03/94 11/09/94 01/12/95 05/31-06/01/95 09/18/95 03/27/96 Property or constituent Corn- Grab C°m- Grab C°m- _ Corn- _ Corn- Corn- Grab Grab Grab Grab posite posite posite posite posite posite sample sample sample sample sample sample sample sample sample sample sample sample Volatile organic compounds Continued trans-l,4-Dichloro-2-butene (M£/L) <50 <50 <50 <50 <50 <50 <50 <50 <0.2 <0.2 <0.2 <0.2 trans-l,2-Dichloroethylene (M-g/L) cis-l,2-Dichloroethylene (p.g/L) 1,1 -Dichloropropene (p.g/L) 2,2-Dichloropropane (p.g/L) 1,3-Dichloropropane (p.g/L) 1,2,4-Trimethylbenzene (pseudocumene) (p.g/L) 2.6 360 100 Isopropylbenzene (p.g/L) 12 3.1 n-Propylbenzene (p.g/L) .2 28 9.3 1,3,5-Trimethylbenzene (mesitylene) (p.g/L) 1.4 140 25 2-Chlorotoluene (M-g/L) 4-Chlorotoluene (M-g/L) Bromochloromethane (p.g/L) n-Butylbenzene (p-g/L) 4.4 sec-Butylbenzene (p.g/L) .2 14 1.6 tert-Butylbenzene (M-g/L) p-Isopropyltoluene (p.g/L) .4 21 2.2 1,1,1,2-Tetrachloroethane (^ig/L) 1,2,3-Trichlorobenzene (M-g/L) 1,2-Dibromomethane (M-g/L) 1,1,2-Trichloro-1,2,2-trifluoroethane (M-g/L) & Methyl tert-butylether (^ig/L) 6 55 1 24 .&.(D Bromobenzene (p.g/L) l,2-Dibromo-3-chloropropane (M-g/L) CO 01 Table 4. Stormwater chemical data at site NAS-2, Naval Air Station, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 StormS Storm 6 _i » 11/02-03/94 11/09/94 01/12/95 05/31-06/01/95 09/18/95 03/27/96 Volatile organic compounds Continued $ o-Chlorobenzene <0.2 <0.2 <0.2 <0.2 1,2,4-Trichlorobenzene 1.3-Dichlorobenzene 30 c 1.4-Dichlorobenzene n Naphthalene 1.3 140 29 I Hexachlorobenzene S (0 z Semivolatile organic compounds o-Chlorobenzene, water, unfiltered, recoverable <0.2 <0.2 -- <0.2 <0.2 (Hg/L) (0 1.3-Dichlorobenzene, water, unfiltered, S recoverable (jxg/L) o 1.4-Dichlorobenzene, water, unfiltered, 0) recoverable (jxg/L) 0. z 0) 1,2-Diphenylhydrazine, water, total recoverable <5 <5 <5 <5 <5 <5 5 (Hg/L) o Hexachlorobutadiene, total (jxg/L) o (0 Naphthalene, total (jxg/L) 8.0 32 0. 1,2,4-Trichlorobenzene, water, unfiltered, 10 recoverable (jxg/L) Acenaphthene, total (jig/L) <5 <5 <5 <5 <5 <5 Acenaphthylene, total (jxg/L) <5 <5 <5 <5 <5 <5 Anthracene, total (jxg/L) <5 <5 <5 <5 <5 <5 r* Benzidine, total (jxg/L) <40 <40 <40 <40 <40 <40 O o> Benzo[a] anthracene, total (jxg/L) Table 4. Stormwater chemical data at site NAS-2, Naval Air Station, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/02-03/94 11/09/94 01/12/95 05/31-06/01/95 09/18/95 03/27/96 Property or constituent Corn- _ . Corn- _ Corn- _ . Corn- _ . Corn- _ Corn- Grab Grab Grab Grab Grab Grab posite posite posite posite posite posite sample sample sample sample sample sample sample sample sample sample sample sample Semivolatile organic compounds Continued Benzo[a]pyrene, total Oig/L) Benzo[b]fluoranthene, total (Hg/L) Benzo[k]fluoranthene, total (ng/L) Benzo[g,h,i]perylene, total (M-g/L) 4-Bromophenylphenol ether, total (Hg/L) <5 <5 <5 <5 <5 <5 n-Butyl benzyl phthalate, total (jig/L) <5 <5 <5 <5 <5 <5 bis(2-Chloroethoxy)methane, total (ng/L) <5 <5 <5 <5 <5 <5 bis(2-Chloroethyl) ether, total (Hg/L) <5 <5 <5 <5 <5 <5 bis(2-Chloroisopropyl) ether, total (ng/L) <5 <5 <5 <5 <5 <5 p-Chloro-m-cresol, total (\Lg/L) <30 <30 <30 <30 <30 <30 2-Chloronaphthalene, total (jig/L) <5 <5 <5 <5 <5 <5 2-Chlorophenol, total (\ig/L) <5 <5 <5 <5 <5 <5 4-Chlorophenyl phenylether, total (Hg/L) <5 <5 <5 <5 <5 <5 Chrysene, total (jig/L) 1,2,5,6-Dibenzanthracene, total (M-g/L) 3,3'-Dichlorobenzidine, total (M-g/L) <20 <20 <20 <20 <20 <20 2,4-Dichlorophenol, total (|J.g/L) <5 <5 <5 <5 <5 <5 Diethyl phthalate, total (M-g/L) <5 <5 <5 <5 <5 <5 Dimethylphthalate, total (Hg/L) <5 <5 <5 <5 <5 <5 2,4-Dimethylphenol, total (M-g/L) 6.0 <5 <5 <5 <5 <5 Di-n-butyl phthalate, total (jig/L) <5 <5 <5 <5 <5 <5 4,6-Dinitro-o-cresol, total Oig/L) <30 <30 <30 <30 <30 <30 2,4-Dinitrophenol, total (^g/L) <20 <20 <20 <20 <20 <20 2,4-Dinitrotoluene, total (^g/L) <5 <5 <5 <5 <5 <5 E * 1 S S S S «n «n «nO>n«n o>n«n«n O VVVV X? 2 X? X? X? X? X? X? "v X? V V VcnvV fnvvv <^ E! «M V v V o d 0 CO § st i i i i \ \ \ \ : 1 i i i i : i : : i : s : ; : : O i c 2 1 s s s s «n «n «no>nin o>n«nin o VVVV o » E X? 2 X? X? X? X? X? X? X? V V Vfnvv f^vVV <^ 10 S 0 Q. S V V V v V i§ B) o ^ 0 c/5 S S "EL 1 1 1 1 i i i O a w 0 * «n m m m in q q q q >n «n «n in «n >n inoinin oininin O VVVV * § X? 2 X? X? VVVV i i X? V V VcnvV cnvVV «N HI V 2 ? 0 5> § i i i j . j j j , , j j j . j j . j fit i i i i ! j , O a 8 w t> SM a> . 0 £ E Q. ^D »P? C^ C^ C^ C^ 1 «n «n 10 ^D ^o ^o ^D *o *o ^o ^^ ^^ VVVV X? 2 X? X? "v X? V V Vf^vV cnv V tNt> ^ °- 5 § v X? X? X? X? v v v5 E S y o ^ 0 o> 5 Cfl T s 1 i .1 i i i i 1 1 1 1 : iiii iiii i | i : : : Ofit a S 0) 1 o i 0 £ ui o> q q q q o CM * "v X? 1 | i 1 X? X? X? X? V X? X? v *v v *v v tn c oj w OJD (A 2 S= 0 O O. 0) £ a> in 'o. 1 1 1 1 1 1 1 1 ' IIII IIII 1 fl 1 1 1 I o i \ ' ' , , , , , . , , . j . . . . w 1 _> fi . 0 » a> fl q q S S E * o. "vo «n inoinin oininin o eaVVVV Ill V X? X? X? X? V X? X? VrnVV rnvVV ^3 "3T , , 1 1 iiii iiii i iiii 5> 5 i i i i 1 1 1 1 1 1 1 1 iiii iiii i iiii T" 2 E O a w *« 3> J 0 I 3r a> 3 1 *^ ^ ^^ ,~^ W) I 1 w ^^ W) O -i-^j) *^ ^J ^rS J2 Q ^c3 ^i. t^ ^^ § § ^ "3 « 3" 3 J ^ 4)" o s 2 *«3 w> i 1 1 1 1 .s a | a 5 s. a S ^ ^ 1 £ 5 5 I 2 §> S )j ^ ?» I 5^ 2-^ ^ 'a1 1 Is "^ 2 3 N ^ S I itrobenzene,tota -Nitrosodimethy 22|||og|-| i a i 1 5 5 x . 3 1 & 1 o 2 a "o « -co< SS j)c en i«- j§s s s ts of / ? ifll® i ** s -s -s -s 1 IlifllSIloooo *S S -a « H Ir^WjiSoQ II 9 a Ci o sa. ^ti^h i i § g S -is 0? ^ « .2 .3 1 3 3 3 | Zi <7j a' a' 'SSScS J3 J3 J»% ^._L- -^ 3-Si3*s O< g "JJ cs i Q £ E E S S S £ M z z 38 Characterization of Stormwater Runoff From the Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas, 1994-96 Table 4. Stormwater chemical data at site NAS-2, Naval Air Station, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/02-03/94 11/09/94 01/12/95 05/31-06/01/95 09/18/95 03/27/96 Property or constituent _ Corn- Corn- Com Grab C°m" _ Corn- Grab Grab Grab . Grab Grab posite posite posite posite posite posite sample sample sample . sample sample sample sample sample sample sample sample sample Organochlorine pesticides/polychlorinated biphenyls Continued gamma-BHC (Lindane) (jig/L) <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 alpha-Chlordane (|ig/L) <.50 <.50 <.50 <.50 <.50 <.50 gamma-Chlordane (|ig/L) <.50 <.50 <.50 <.50 <.50 <.50 4-4'-DDD(ng/L) <.10 <.10 <.10 <.10 <.10 <.10 4-4'-DDE QigfL) <.10 <.10 <.10 <.10 <.10 <.10 4-4'-DDT Qig/L) <.10 <.10 <.10 <.10 <.10 <.10 Dieldrin (|ig/L) <.05 <.05 <.05 <.05 <.05 <.05 Endosulfan I (|ig/L) <.05 <.05 <.05 <.05 <.05 <.05 Endosulfan II (|ig/L) <.10 <.10 <.10 <.10 <.10 <.10 Endosulfan sulfate (|ig/L) <.10 <.10 <.10 <.10 <.10 <.10 Endrin (|ig/L) <.06 <.06 <.06 <.06 <.06 <.06 Endrin aldehyde (|ig/L) <.10 <.10 <.10 <.10 <.10 <10 Heptachlor (fig/L) <.05 <.05 <.05 <.05 <.05 <.05 Heptachlor epoxide (|ig/L) <.05 <.05 <.05 <.05 <.05 <.05 Methoxychlor (Ug/L) <.50 <.50 <.50 <.50 <.50 <.50 Toxaphene Qig/L) PCB Aroclor 1016 (^ig/L) PCB Aroclor 1221 (^ig/L) PCB Aroclor 1232 (|ig/L) PCB Aroclor 1242 (^ig/L) PCB Aroclor 1248 Oig/L) | PCB Aroclor 1254 (^ig/L) S, PCB Aroclor 1260 (|ig/L) Table 4. Stormwater chemical data at site NAS-2, Naval Air Station, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/02-03/94 11/09/94 01/12/95 05/31-06/01/95 09/18/95 03/27/96 1994-96 Characterizatiol Property or constituent Corn- ^ Corn- Corn- Corn- Corn- Corn- Grab Grab Grab Grab Grab Grab posite posite posite posite posite posite sample sample sample sample sample sample sample sample sample sample sample sample _i 2. Organophosphorus pesticides 0 Azinophos-methyl (guthion) (|ig/L) <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 Bolstar (sulprofos) (|ig/L) <.50 <.50 <.50 <.50 <.50 <.50 iID Chlorpyrifos (dursban) (|ig/L) <.25 <.25 <.25 <.25 <.25 <.25 3D c Coumaphos (|ig/L) <.50 <.50 <.50 <.50 <.50 <.50 3 Tl Demeton O&S (|ig/L) <.25 <.25 <.25 <.25 <.25 <.25 O 3 Diazinon (|ig/L) <.25 <.25 <.25 .73 <.25 <.25 5- ID Dichlorvos (vapona) (|ig/L) <.50 <.50 <.50 <.50 <.50 <.50 Dimethoate (|Xg/L) <.50 <.50 <.50 <.50 <.50 <.50 1 Dosulfoton (|ig/L) <.25 <.25 <.25 <.25 <.25 <.25 I Ethoprop (|ig/L) <.25 <.25 <.25 <.25 <.25 <.25 0 Fensulfothion (|ig/L) <2.5 <2.5 <2.5 <2.5 <2.5 <2:5 to a. Fenthion (baytex) (|ig/L) <.25 <.25 <.25 <.25 <.25 <.25 "sz Malathion (|ig/L) <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <.25 18 Merphos (|ig/L) <.25 <.25 <.25 <.25 <.25 O Mevinphos (phosdrin) (|ig/L) <6.2 <6.2 <6.2 <6.2 <6.2 <6.2 (05" Naled (dibrom) (|ig/L) <10 <10 <10 <10 <10 <10 Q. 1 Ethyl parathion (|ig/L) <.25 <.25 <.25 <.25 <.25 <.25 £. Methyl parathion (|ig/L) <.25 <.25 <.25 <.25 <.25 <.25 I ID Phorate (thimet) (|ig/L) <.25 <.25 <.25 <.25 <.25 <.25 Ronnel (|ig/L) <.25 <.25 <.25 <.25 <.25 <.25 IDo to 3_ Sulfotepp (|ig/L) <.25 <.25 <.25 <.25 <.25 <.25 Stirophos (tetrachlorovinphos) (|ig/L) <2.5 <2.5 <2.5 <2.5 6.0 <2.5 1 Tokuthion (prothiophos) (|ig/L) <.25 <.25 <.25 <.25 <.25 <.25 Trichloronate (|ig/L) <.25 ?s <.25 <.25 <.25 <.25 <.25 Table 5. Stormwater chemical data at site NAS-3, Naval Air Station, Dallas, Texas [|0,S/cm, microsiemens per centimeter at 25 °C; , not analyzed; °C, degrees Celsius; mg/L, milligrams per liter; CaCC>3, calcium carbonate; cols./100 mL, colonies per 100 milliliters; K, non-ideal .colony count; N, nitrogen; <, less than; P, phosphorous; fJ-g/L, micrograms per liter] Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 10/15/94 11/09/94 03/12/95 03/25/95 12/08/95 03/27/96 Property or constituent _ ^ Com- ^ Com- ^ Com Corn- Corn- _ Corn- Grab . Grab , Grab Grab Grab Grab posite posite posite posite posite posite sample . sample . sample sample sample sample sample sample sample sample sample sample Properties Specific conductance (uS/cm) 54 199 1,160 56 701 191 205 228 188 144 57 pH, water, whole, field (standard units) 8.1 -- 7.5 7.4 7.3 7.7 7.6 7.9 7.6 7.6 7.3 Temperature, water (°C) 19.5 -- 20.5 -- 11.0 - 21.5 13.0 9.5 Oxygen demand, chemical (high level) (mg/L) 18 -- 17 32 78 38 23 Oxygen demand, biochemical, 5-day (mg/L) 3.5 5.5 19 7.4 4.8 Hardness, calculated (mg/L as CaCX^) 24 59 55 54 25 Alkalinity, water, dissolved, fixed-endpoint 26 63 51 39 25 titration, field (mg/L as CaCO3) Bacteria Coliforms, fecal (cols./100 mL) 12,000 -- 1,100 - 4,900 -- K 1,600 K520 K540 Streptococci, fecal (cols./100 mL) 1,400 -- 700 -- K450 - 16,000 670 2,200 Major ions Calcium, dissolved (mg/L) 9.0 22 20 20 9.5 Magnesium, dissolved (mg/L) .30 1.1 1.2 1.1 .40 Sodium, dissolved (mg/L) 2.8 16 17 16 3.9 Potassium, dissolved (mg/L) 1.3 2.6 3.2 2.5 1.4 Sulfate, dissolved (mg/L) 3.6 22 29 26 6.1 Chloride, dissolved (mg/L) .90 5.2 4.9 4.4 1.2 Solids Residue, total at 105 °C, suspended (mg/L) 4 19 192 7 21 cr Solids, residue at 180 °C, dissolved (mg/L) 37 124 128 119 46 9 tn Table 5. Stormwater chemical data at site NAS-3, Naval Air Station, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 10/15/94 11/09/94 03/12/95 03/25/95 12/08/95 03/27/96 1994-96 Characterizatior Property or constituent Com Com Corn- Com- ^ L Corn- _ Corn- Grab Grab Grab Grab Grab Grab posite posite posite posite . posite posite sample sample sample sample sample sample sample sample sample sample sample sample StormwaterofRun CO Selenium, total (ng/L) <400 <400 <400 <400 <400 <400 <400 <400 2- Silver, total (^ig/L) <30 <30 <30 <30 <30 <30 <30 <30 o CO Thallium, total (^ig/L) <5.0 <5.0 <5 Vanadium, total (fig/L) <40 <40 <40 <40 <40 <40 <40 <40 Zinc, total (\ig/L) 13 12 <10 22 88 44 88 92 40 50 50 50 Table 5. Stormwater chemical data at site NAS-3, Naval Air Station, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 10/15/94 11/09/94 03/12/95 03/25/95 12/08/95 03/27/96 Property or constituent Com Com Com Com- ^ Corn- Corn- Grab Grab Grab Grab Grab Grab posite posite posite posite posite posite sample sample sample sample sample sample sample sample sample sample sample sample Carbon Carbon, organic, total (mg/L) -- 7.0 -- 4.2 -- 8.7 -- 27 -- 11 6.1 Organic compounds Oil and grease, total, gravimetric (mg/L) <1 - <1 -- 8 - <1 2 2 Phenols, total (|ig/L) 6 - <1 -- 9 -- 4 5 6 Volatile organic compounds Chloromethane (|ig/L) <14 <14 <14 <14 <14 <14 <14 <14 <.2 <.2 <.2 <.2 Bromomethane (|ig/L) <10 <10 <10 <10 <10 <10 <10 <10 <.2 <.2 <.2 <.2 Vinyl chloride (|ig/L) <11 <11 <11 <11 <11 <11 <11 <11 <.2 <.2 <.2 <.2 Chloroethane (|ig/L) <10 <10 <10 <10 <10 <10 <10 <10 <.2 <.2 <.2 <.2 Methylene chloride (|ig/L) <17 <17 <17 <17 <17 <17 <17 <17 <.2 .3 <.2 <.2 Acetone (|ig/L) <50 <50 <50 <50 <50 <50 <50 <50 -- Carbon disulfide (|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 -- 1,1-Dichloroethylene (|ig/L) <4 <4 <4 <4 <4 <4 <4 <4 <.2 <.2 <.2 <.2 1,1-Dichloroethane (|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 1,2-Dichloroethylene, total (|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 -- Chloroform (|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 1,2-Dichloroethane (|ig/L) <50 <50 <50 <50 <50 <50 <50 <50 <.2 <.2 <.2 <.2 2-Butanone (M£/L) <5 <5 <5 <5 <5 <5 <5 <5 1,1,1-Trichloroethane (|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 Carbon tetrachloride (|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 Bromodichloromethane (|ig/L) <5 <5 <5 <5 <5 <5 <5 V,*/ £ 5 *x»A»<7 *x.^*< 2 <.2 <.2 n> l,2-Dichloropropane(|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 * trans- 1 ,3-Dichloropropene (|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 Trichloroethylene (|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 ft Dibromochloromethane (|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 Table 5. Stormwater chemical data at site NAS-3, Naval Air Station, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 10/15/94 11/09/94 03/12/95 03/25/95 12/08/95 03/27/96 1994-96 Characterizatiol Property or constituent Com- Com- Com Com- _ . Corn- Corn- Grab Grab Grab Grab Grab Grab posite posite posite posite . posite posite sample sample sample sample sample sample sample sample sample sample sample sample _l a Volatile organic compounds Continued ff 1,1,2-Trichloroethane (jig/L) <5 <5 <5 <5 <5 <5 <5 <5 <0.2 <.2 <0.2 <0.2 Benzene (jig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 i» cis-l,3-Dichloropropene (Hg/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 3) c 2-Chloroethyl vinyl ether (jig/L) <100 <100 <100 <100 <100 <100 <100 <100 <1 <1 <1 <1 3 Tl Bromoform (ng/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 1 4-Methyl-2-pentanone (ng/L) <50 <50 <50 <50 <50 <50 <50 <50 -- CD 1,1,2,2-Tetrachloroethane (Hg/L) <7 <7 <7 <7 <7 <7 <7 <7 <.2 <.2 <.2 <.2 z Tetrachloroethylene (jig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 iD> ?' Toluene (jig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 .2 <.2 5'g Chlorobenzene (jig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 Ethylbenzene (jig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 a Trichlorofluoromethane (|ig/L) <10 <10 <10 <10 <10 <10 <10 <10 <.2 <.2 <.2 <.2 I Xylenes, total (jig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 1.1 .6 .3 ! Acrolein (ng/L) <60 <60 <60 <60 <60 <60 <60 <60 -- o Acrylonitrile (jig/L) <25 <25 <25 <25 <25 <25 <25 <25 3 Dibromomethane (jig/L) dC- <10 dC- <10 <10 <10 <10 <10 <.2 <.2 <.2 <.2 Dichlorodifluoromethane (ng/L) Ethanol (jig/L) c? w CD Ethyl methacrylate (jig/L) CD 2-Hexanone (jig/L) <50 <50 <50 <50 <50 <50 <50 <50 lodomethane (jig/L) 3 Styrene (M-g/L) <5 <5 <5 <5 <5 <5 <5 <5 1,2,3-Trichloropropane (jig/L) Vinyl acetate (jig/L) <50 <50 <50 <50 <50 <50 <50 <50 Table 5. Stormwater chemical data at site NAS-3, Naval Air Station, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 10/15/94 11/09/94 03/12/95 03/25/95 12/08/95 03/27/96 Property or constituent ^ ._ Corn- ^ Corn- _ Corn- Corn- ^ Corn- Corn- Grab Grab Grab Grab Grab Grab posite posite posite posite posite posite sample sample sample sample sample sample sample sample sample sample sample sample Volatile organic compounds Continued trans-l,4-Dichloro-2-butene (ng/L) <50 <50 <50 <50 <50 <50 <50 <50 <0.2 <0.2 <0.2 <0.2 trans-l,2-Dichloroethylene (ng/L) cis-l,2-Dichloroethylene (ng/L) 1,1-Dichloropropene (ng/L) 2,2-Dichloropropane (ng/L) 1,3-Dichloropropane (ng/L) 1,2,4-Trimethylbenzene (pseudocumene) (ng/L) 6.9 .4 Isopropylbenzene (ng/L) n-Propylbenzene (ng/L) .3 1,3,5-Trimethylbenzene (mesitylene) (ng/L) 2.2 2-Chlorotoluene (ng/L) 4-Chlorotoluene (\ig/L) Bromochloromethane (ng/L) n-Butylbenzene (ng/L) sec-Butylbenzene (ng/L) tert-Butylbenzene (ng/L) p-Isopropyltoluene (ng/L) 1,1,1,2-Tetrachloroethane (ng/L) 1,2,3-Trichlorobenzene (ng/L) 1,2-Dibromomethane (ng/L) 1,1,2-Trichloro-1,2,2-trifluoroethane (ng/L) g- Methyl tert-butylether (ng/L) .3 .4 7 01 Bromobenzene (ng/L) l,2-Dibromo-3-chloropropane (ng/L) Table 5. Stormwater chemical data at site NAS-3, Naval Air Station, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 o 10/15/94 11/09/94 03/12/95 03/25/95 12/08/95 03/27/96 _L 0 Property or constituent Corn- ^ . Corn- Corn- ^ . Com- ^ . Corn- Com II Grab Grab Grab Grab . Grab Grab posite posite posite posite . posite posite 1 sample sample sample sample sample sample 5' sample sample sample sample sample sample o Volatile organic compounds Continued o-Chlorobenzene <0.2 <0.2 <0.2 <0.2 1,2,4-Trichlorobenzene <2 <2 1.3-Dichlorobenzene 1.4-Dichlorobenzene <.2 <2 i Naphthalene 6.9 o Hexachlorobenzene o z Semivolatile organic compounds o-Chlorobenzene, water, unfiltered, recoverable (Hg/L) CO 1.3-Dichlorobenzene, water, unfiltered, s recoverable (M-g/L) o 1.4-Dichlorobenzene, water, unfiltered, recoverable (u.g/L) iQ. 1,2-Diphenylhydrazine, water, total recoverable <5 <5 <5 <5 <5 <5 (Hg/L) o Hexachlorobutadiene, total (H-g/L) o M Naphthalene, total (|Xg/L) <2 Q. 1,2,4-Trichlorobenzene, water, unfiltered, i recoverable (H-g/L) Acenaphthene, total (H-g/L) <5 <5 <5 <5 <5 <5 Acenaphthylene, total (M-g/L) <5 <5 <5 <5 <5 <5 o Anthracene, <5 <5 <5 <5 <5 <5 » Benzidine, 48 <40 <40 80 <40 <40 » Benzo[a]anthracene, total (H-g/L) » M Table 5. Stormwater chemical data at site NAS-3, Naval Air Station, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 10/15/94 11/09/94 03/12/95 03/25/95 12/08/95 03/27/96 Property or constituent _ . Corn- Corn- _ Corn- _ Corn- Corn- Corn- Grab Grab Grab Grab Grab Grab posite posite posite posite posite posite sample sample sample sample sample sample sample sample sample sample sample sample Semivolatile organic compounds Continued Benzo[a]pyrene, total (p.g/L) Benzo[b]fluoranthene, total (p,g/L) Benzo[k]fluoranthene, total (p,g/L) Benzo[g,h,i]perylene, total (Hg/L) 4-Bromophenylphenol ether, total (p,g/L) <5 <5 <5 <5 <5 <5 n-Butyl benzyl phthalate, total (Jig/L) <5 <5 <5 <5 <5 <5 bis(2-Chloroethoxy)methane, total (p.g/L) <5 <5 <5 <5 <5 <5 bis(2-Chloroethyl) ether, total (Jig/L) <5 <5 <5 <5 <5 <5 bis(2-Chloroisopropyl) ether, total (fig/L) <5 <5 <5 <5 <5 <5 p-Chloro-m-cresol, total (p.g/L) <30 <30 <30 <30 <30 <30 2-Chloronaphthalene, total (p,g/L) <5 <5 <5 <5 <5 <5 2-Chlorophenol, total (p,g/L) <5 <5 <5 <5 <5 <5 4-Chlorophenyl phenylether, total (p-g/L) <5 <5 <5 <5 <5 <5 Chrysene, total (p,g/L) 1,2,5,6-Dibenzanthracene, total (p,g/L) 3,3'-Dichlorobenzidine, total (p,g/L) <20 <20 <20 <20 <20 <20 2,4-Dichlorophenol, total (p,g/L) <5 <5 <5 <5 <5 <5 Diethyl phthalate, total (jig/L) <5 <5 <5 <5 <5 <5 Dimethylphthalate, total (fig/L) <5 <5 <5 <5 <5 <5 2,4-Dimethylphenol, total (fig/L) <5 <5 <5 <5 <5 <5 Di-n-butyl phthalate, total (p,g/L) <5 <5 <5 <5 <5 <5 & 4,6-Dinitro-o-cresol, total (p.g/L) <30 <30 <30 <30 <30 <30 «n 2,4-Dinitrophenol, total (p.g/L) <20 <20 <20 <20 <20 <20 2,4-Dinitrotoluene, total (ng/L) <5 <5 <5 <5 <5 <5 Table 5. Stormwater chemical data at site NAS-3, Naval Air Station, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 10/15/94 11/09/94 03/12/95 03/25/95 12/08/95 03/27/96 Property or constituent Corn- Corn- _ Com- Com Corn- ^ . Corn- Grab Grab Grab . Grab Grab Grab posite posite posite posite posite posite sample sample sample sample sample sample sample sample sample sample sample sample Semivolatile organic compounds Continued 2,6-Dinitrotoluene, total (|ig/L) <5 <5 <5 <5 <5 <5 Di-n-octyl phthalate, total (|ig/L) <10 <10 <10 <10 <10 <10 i bis(2-Ethylhexyl)phthalate, total (|ig/L) <5 <5 <5 <5 <5 <5 3D Fluoranthene, total (|ig/L) <5 <5 <5 6.0 <5 <5 n Fluorene, total (|ig/L) <5 <5 <5 <5 <5 <5 5 Hexachlorobenzene, total (|ig/L) <5 <5 <5 <5 <5 <5 3- Hexachlorocyclopentadiene, total (|ig/L) <5 <5 <5 <5 <5 <5 (D ! Hexachloroethane, total (|ig/L) <5 <5 <5 <5 <5 <5 Indeno[l,2,3-c,d]pyrene, total (|ig/L) <10 - <10 <10 <10 - <10 - <10 Isophorone, total (|ig/L) <5 <5 <5 <5 <5 <5 Nitrobenzene, total (Hg/L) <5 <5 <5 <5 <5 <5 N-Nitrosodimethylamine, total (|ig/L) <5 <5 <5 <5 <5 <5 2-Nitrophenol, total (|ig/L) <5 <5 <5 <5 <5 <5 4-Nitrophenol, total (|ig/L) <30 <30 <30 <30 <30 <30 N-nitrosodi-n-propylamine, total (|ig/L) <5 <5 <5 <5 <5 <5 N-nitrosodiphenylamine, total (|ig/L) <5 <5 <5 <5 <5 <5 a Pentachlorophenol, total (|ig/L) <30 <30 <30 <30 <30 <30 I Phenanthrene, total (|ig/L) <5 <5 <5 <5 <5 <5 Phenol (C6H5OH), total (^ig/L) <5 <5 <5 <5 <5 <5 3D i Pyrene, total (|ig/L) <5 <5 <5 <5 <5 <5 i o 2,4,6-Trichlorophenol, total (|ig/L) <20 <20 <20 <20 <20 <20 Organochlorine pesticides/polychlorinated biphenyls o Aldrin (|ig/L) <.05 <.05 <.05 <.05 <.05 <.05 alpha-BHC (^ig/L) <.05 <.05 <.05 <.05 <.05 <.05 beta-BHC (|ig/L) <.05 <.05 <.05 <.05 <.05 <.05 delta-BHC (^ig/L) <.05 <.05 <05 <.05 <.05 <.05 Table 5. Stormwater chemical data at site NAS-3, Naval Air Station, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 10/15/94 11/09/94 03/12/95 03/25/95 12/08/95 03/27/96 Property or constituent Corn- Corn- Com Corn- Grab °m" Grab Grab Grab . Grab Grab posite posite posite posite posite posite sample sample sample . sample sample sample sample sample sample sample sample sample Organochlorine pesticides/polychlorinated biphenyls Continued gamma-BHC (Lindane) (|Xg/L) <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 alpha-Chlordane (|xg/L) <.50 <.50 <.50 <.50 <.50 <.50 gamma-Chlordane (|Xg/L) <.50 <.50 <.50 <.50 <.50 <.50 4-4'-DDD (|Xg/L) <.10 <.10 <.10 <.10 <.10 <.10 4-4'-DDE (\ig/L) <.10 <.10 <.10 <.10 <.10 <.10 4-4'-DDT (\ig/L) <.10 <.10 <.10 <.10 <.10 <.10 Dieldrin (|Xg/L) <.05 <.05 <.05 <.05 <.05 <.05 Endosulfan I (|Xg/L) <.05 <.05 <.05 <.05 <.05 <.05 Endosulfan II (|Xg/L) <.10 <.10 <.10 <.10 <.10 <.10 Endosulfan sulfate (fXg/L) <.10 <.10 <.10 <.10 <.10 <.10 Endrin (|Xg/L) <.06 <.06 <.06 <.06 <.06 <.06 Endrin aldehyde (|Xg/L) <.10 <.10 <.10 <.10 <.10 <.10 Heptachlor (|Xg/L) <.05 <.05 <.05 <.05 <.05 <.05 Heptachlor epoxide (|Xg/L) <.05 <.05 <.05 <.05 <.05 <.05 Methoxychlor (|Xg/L) <.50 <.50 <.50 <.50 <.50 <.50 Toxaphene (|Xg/L) PCB Aroclor 1016 ([Xg/L) PCB Aroclor 1221 (^ig/L) PCB Aroclor 1232 ([Xg/L) PCB Aroclor 1242 (^ig/L) PCB Aroclor 1248 (^ig/L) PCB Aroclor 1254 (^ig/L) PCB Aroclor 1260 (^ig/L) g Table 5. Stormwater chemical data at site NAS-3, Naval Air Station, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 10/15/94 11/09/94 03/12/95 03/25/95 12/08/95 03/27/96 1994-96 Characterizatiol Property or constituent Corn- ^ Com- ^ . Corn- Corn- Corn- _ . Corn- Grab Grab . Grab Grab Grab Grab posite posite . posite posite posite posite sample sample . sample sample sample sample sample sample sample sample sample sample _> Organophosphorus pesticides ff Azinophos-methyl (guthion) (Hg/L) <2.5 <2.5 <2.5 <2.5 <2.5 i Bolstar (sulprofos) (Hg/L) <.50 <.50 <.50 <.50 <.50 i Chlorpyrifos (dursban) (Hg/L) <.25 <.25 <.25 <.25 <.25 31 C Coumaphos (Hg/L) <.50 <.50 <.50 <.50 <.50 3 3:a. 7 Demeton O&S (\igfL) <.25 <.25 <.25 <.25 <.25 i Diazinon (Hg/L) <.25 <.25 <.25 <.25 <.25 1 Dichlorvos (vapona) (^ig/L) <.50 <.50 <.50 <.50 <.50 1 Dimethoate (^ig/L) <.50 <.50 <.50 <.50 <.50 2. Dosulfoton (H.g/L) <.25 <.25 <.25 <.25 <.25 1 Ethoprop ((J-g/L) <.25 <.25 <.25 <.25 <.25 o Fensulfothion (Hg/L) <2.5 <2.5 <2.5 <2.5 <2.5 Q> Q. Fenthion (baytex) (ng/L) <.25 <.25 <.25 <.25 <.25 z Malathion (Hg/L) <1.2 <1.2 <1.2 <1.2 <1.2 Merphos (^g/L) <.25 <.25 <.25 <.25 <.25 ia o Mevinphos (phosdrin) (^ig/L) <6.2 <6.2 <6.2 <6.2 <6.2 3 5"(0 Naled (dibrom) (Hg/L) <10 <10 <10 <10 <10 Q. C £ Ethyl parathion (^ig/L) <.25 <.25 <.25 <.25 <.25 £! 3) Methyl parathion (\Lg/L) <.25 <.25 <.25 <.25 <.25 i Phorate (thimet) (^g/L) <.25 <.25 <.25 <.25 <.25 i Ronnel (^ig/L) <25 <.25 <.25 <.25 <.25 2 j* Sulfotepp (^g/L) <.25 <.25 <.25 <.25 <.25 I Stirophos (tetrachlorovinphos) (^ig/L) <2.5 <2.5 <2.5 2.9 13 » Tokuthion (prothiophos) (Hg/L) <.25 <.25 <.25 <.25 <.25 Trichloronate (^ig/L) <.25 <.25 <.25 <.25 <.25 u Table 6. Stormwater chemical data at site NWIRP-1, Naval Weapons Industrial Reserve Plant, Dallas, Texas [US/cm, microsiemens per centimeter at 25 °C; °C, degrees Celsius; --, not analyzed; mg/L, milligrams per liter; CaCO3, calcium carbonate; cols./100 mL, colonies per 100 milliliters; K, non-ideal colony count; N, nitrogen; <, less than; P, phosphorous; p.g/L, micrograms per liter] Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/09/94 11/14/94 03/25/95 04/17-18/95 09/18/95 03/27/96 Property or constituent _ . Corn- Com Corn- _ Corn- _ Corn- Grab Grab . Grab Grab Grab Grab posite posite posite posite posite posite sample sample . sample sample sample sample sample sample sample sample sample sample Properties Specific conductance (|iS/cm) 655 103 290 164 373 82 408 98 340 102 236 65 pH, water, whole, field (standard units) 7.3 7.4 6.8 7.3 8.0 7.0 7.9 7.4 8.2 7.2 7.9 7.8 Temperature, water (°C) 20.5 24.0 - 20.5 ~ - 27.5 10.0 Oxygen demand, chemical (high level) (mg/L) 31 38 64 54 37 37 Oxygen demand, biochemical, 5-day (mg/L) 4.3 3.6 14 8.1 4.3 4.6 Hardness, calculated (mg/L as CaCO3) 35 50 27 32 35 27 Alkalinity, water, dissolved, fixed-endpoint 37 56 42 28 39 24 titration, field (mg/L as CaCO3) Bacteria Coliforms, fecal (cols./100 mL) 57,000 130,000 - K430 - K150 20,000 1,200 Streptococci, fecal (cols./100 mL) 730 3,700 - K300 -- 390 3,900 3,400 Major ions Calcium, dissolved (mg/L) 13 18 10 12 13 10 Magnesium, dissolved (mg/L) .71 1.2 .45 .57 .63 .40 Sodium, dissolved (mg/L) 6.1 13 4.3 5.5 7.6 3.8 Potassium, dissolved (mg/L) .9 1.5 1.1 1.3 1.2 1.0 Sulfate, dissolved (mg/L) 6.6 12 6.9 8.3 8.3 7.2 Chloride, dissolved (mg/L) 2.8 5.2 2.1 3.5 2.7 1.8 Solids Residue, total at 105 °C, suspended (mg/L) 28 38 64 71 13 33 o> Solids, residue at 180 °C, dissolved (mg/L) 62 91 52 63 68 50 cr Table 6. Stormwater chemical data at site NWIRP-1, Naval Weapons Industrial Reserve Plant, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 ? 11/09/94 11/14/94 03/25/95 04/17-18/95 09/18/95 03/27/96 _L B) (0 3 tf> g Property or constituent Com Com Com Com ^ . Com- ^ ^ Corn- t> Grab Grab Grab Grab Grab Grab (O 2. posite posite posite posite posite . posite «[ sample sample sample sample sample . sample sample sample sample sample sample sample 1 a Nutrients s Nitrogen, nitrite plus nitrate, total (mg/L as N) - 0.37 ~ 0.86 - 0.84 -- 0.75 0.61 -- 0.69 i Nitrogen, Kjeldahl, total (mg/L as N) -- .63 -- .63 -- 1.2 -- .70 .63 -- .62 i Phosphorus, total (mg/L as P) -- <.05 -- <.05 -- <.05 -- .16 <.05 - .35 c3) Phosphorus, dissolved (mg/L as P) -- <.05 -- <.05 -- <.05 -- <.05 .05 -- <.05 Trace elements 1 Aluminum, total (|J.g/L) <200 1,700 4,100 310 200 130 <200 1,300 420 1s- Antimony, total (\igfL) <200 <200 <200 <200 <200 <200 <200 <200 <10 9 z Arsenic, total (|J.g/L) <300 <300 <300 <300 <300 <300 <300 <300 2 <1 1 <1 0) » Barium, total (jJ-g/L) <100 <100 120 <100 <100 <100 <100 <100 Beryllium, total (jig/L) <2 <2 <2 <2 <2 W <2 <2 <2 <10 <10 <10 <10 s Cadmium, total (ng/L) <5 <5 6 <5 <5 <5 <5 <5 <1 <1 <1 <1 8 Chromium, total (jig/L) <30 44 110 <30 <30 35 <30 34 11 2 59 38 0) 0. Cobalt, total (jig/L) <40 <40 <40 <40 <40 <40 <40 <40 ._ Copper, total (jig/L) <30 <30 610 . <30 <30 <30 <30 <30 18 25 Cyanide, total (jJ-g/L) -s Iron, total (jig/L) 460 1,800 390 350 730 2,000 550 3,700 550 720 Lead, total (jJ-g/L) <200 <200 <200 <200 <200 <200 <200 <200 4 8 15 12 Q. 50 W Manganese, total (|J.g/L) 80 60 190 70 190 86 22 95 30 Mercury, total (jJ-g/L) 3D A Molybdenum, total (|J.g/L) <40 <40 170 50 <40 <40 <40 <40 W A Nickel, total (jig/L) <40 <40 <40 <40 <40 <40 <40 <40 5 2 A 3> 0) Selenium, total (|j,g/L) <400 <400 <400 <400 <400 <400 <400 <400 Silver, total (^ig/L) <30 <30 64 <30 <30 <30 <30 <30 ThaUium, total (ng/L) <5 <5 <5 <5 Vanadium, total (|J.g/L) <40 <40 <40 <40 <40 <40 <40 <40 Zinc, total (jig/L) 21 100 1,400 130 36 200 19 16 30 70 310 170 Table 6. Storm water chemical data at site NWIRP-1, Naval Weapons Industrial Reserve Plant, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/09/94 11/14/94 03/25/95 04/17-18/95 09/18/95 03/27/96 Property or constituent Corn- Com Com _ Corn- Corn- Corn- Grab Grab Grab Grab Grab Grab posite posite posite posite posite posite sample sample sample sample sample sample sample sample sample sample sample sample Carbon Carbon, organic, total (mg/L) 9.2 -- 11 - 22 14 9.4 8.1 Organic compounds Oil and grease, total, gravimetric (mg/L) <1 8 -- 2 -- <1 <1 2 Phenols, total (jig/L) <1 15 3 « 2 <1 5 Volatile organic compounds Chloromethane (Hg/L) 1.4 Bromomethane (jig/L) Vinyl chloride (jig/L) .3 .2 .9 Chloroethane (\ig/L) Methylene chloride (^ig/L) .8 Acetone (jig/L) <50 <50 <50 <50 <50 <50 <50 <50 Carbon disulfide (jig/L) <5 <5 <5 <5 <5 <5 <5 <5 1,1-Dichloroethylene (jig/L) <4 <4 <4 <4 <4 <4 <4 <4 .5 1.1-Dichloroethane (ng/L) <5 <5 <5 <5 <5 <5 <5 <5 1.2-Dichloroethylene, total (jig/L) 12 <5 <5 <5 <5 <5 <5 <5 Chloroform (Hg/L) <5 <5 <5 <5 <5 <5 <5 <5 1,2-Dichloroethane (jig/L) <50 <50 <50 <50 <50 <50 <50 <50 2-Butanone (ng/L) <5 <5 <5 <5 <5 <5 <5 <5 1,1,1-Trichloroethane (jig/L) <5 <5 <5 <5 <5 <5 <5 <5 .3 Carbon tetrachloride (^ig/L) <5 <5 <5 <5 <5 <5 <5 <5 Bromodichloromethane (Hg/L) <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 cr 1,2-Dichloropropane (M^g/L) (9 o> trans-l,3-Dichloropropene (Hg/L) <5 <5 <5 <5 <5 <5 <5 <5 Trichloroethylene (ng/L) 24 9.4 29 12 <5 <5 <5 <5 25 12 21 5.3 Dibromochloromethane (^ig/L) <5 <5 <5 <5 <5 <5 <5 <5 2 Table 6. Stormwater chemical data at site NWIRP-1, Naval Weapons Industrial Reserve Plant, Dallas, Texas Continued o Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 - 5 11/09/94 11/14/94 03/25/95 04/17-18/95 09/18/95 03/27/96 CO 5 2 ^ Property or constituent Com Com Com Com ^ L Com- _ L Corn- T ® Grab Grab Grab Grab Grab Grab co ^ posite posite posite posite posite . posite "I sample sample sample sample sample . sample o sample sample sample sample sample sample a Volatile organic compounds Continued CO £ 1 , 1 ,2-Trichloroethane (jig/L) <5 <5 <5 <5 <5 <5 <5 <5 <0.2 <0.2 <0.2 <0.2 Benzene (jig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 cis-l,3-Dichloropropene (jig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 30 2-Chloroethyl vinyl ether (jig/L) <100 <100 <100 <100 <100 <100 <100 <100 <1 <1 <1 <1 3 Bromofonn (jig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <2 <.2 <2 4-Methyl-2-pentanone (jig/L) <50 <50 <50 <50 <50 <50 <50 <50 -- 1 , 1 ,2,2-Tetrachloroethane (jig/L) <7 <7 <7 <7 <7 <7 <7 <7 <.2 <.2 <.2 <.2 Tetrachloroethylene (jig/L) <5 <5 <5 <5 <5 <5 <5 <5 <2 <2 <.2 <2 Toluene (jig/L) <5 <5 <5 <5 <5 <5 <5 <5 .5 <2 <-2 <.2 5'g Chlorobenzene (jig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 Ethylbenzene (jig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 o> Q. Trichlorofluoromethane (jig/L) <10 <10 <10 <10 <10 <10 <10 <10 <.2 <.2 <.2 <.2 0) Xylenes, total (jig/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <2 <-2 <.2 I Acrolein (jig/L) <60 <60 <60 <60 <60 <60 <60 <60 -- 0) Acrylonitrile (H-g/L) <25 <25 <25 <25 <25 <25 <25 <25 _. CO5" Dibromomethane (jig/L) Q. c Dichlorodifluoromethane (jig/L) Ethanol (jig/L) Ethyl methacrylate (\ig/L) 2-Hexanone Qig/L) <50 <50 <50 <50 <50 <50 <50 <50 0) J* lodomethane Qig/L) S1 Styrene (jig/L) <5 <5 <5 <5 <5 <5 <5 <5 1,2,3-Trichloropropane (M-g/L) Vinyl acetate (jig/L) <50 <50 <50 <50 <50 <50 <50 <50 Table 6. Stormwater chemical data at site NWIRP-1, Naval Weapons Industrial Reserve Plant, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/09/94 11/14/94 03/25/95 04/17-18/95 09/18/95 03/27/96 Property or constituent _ Corn- Com Com ^ Corn- ^ Corn- Corn- Grab Grab Grab Grab Grab Grab posite posite posite posite posite posite sample sample sample sample sample sample sample sample sample sample sample sample Volatile organic compounds Continued trans-l,4-Dichloro-2-butene (|ig/L) <50 <50 <50 <50 <50 <50 <50 <50 <0.2 <0.2 <0.2 <0.2 trans-l,2-Dichloroethylene (|ig/L) .. ------<.2 <.2 <.2 <.2 cis-l,2-Dichloroethylene (|ig/L) ------4.2 2.0 6.7 1.4 1,1-Dichloropropene (^ig/L) ._ « ~ <.2 <2 <.2 <.2 2,2-Dichloropropane (|ig/L) <2 1,3-Dichloropropane (^ig/L) 1,2,4-Trimethylbenzene (pseudocumene) (|ig/L) Isopropylbenzene (|ig/L) n-Propylbenzene (|ig/L) <2 1,3,5-Trimethylbenzene (mesitylene) (|ig/L) 2-Chlorotoluene (|ig/L) <2 4-Chlorotoluene (|ig/L) Bromochloromethane (|ig/L) <2 n-Butylbenzene (|ig/L) sec-Butylbenzene (|ig/L) <2 tert-Butylbenzene (|ig/L) <2 p-Isopropyltoluene (|ig/L) <2 <2 1,1,1,2-Tetrachloroethane (|ig/L) <2 1,2,3-Trichlorobenzene (|ig/L) <2 <2 1,2-Dibromomethane (|ig/L) <2 <2 1,1,2-Trichloro-1,2,2-trifluoroethane (|ig/L) & Methyl tert-butylether (|ig/L) o> Bromobenzene (|ig/L) <2 1,2-Dibromo-3-chloropropane Table 6. Stormwater chemical data at site NWIRP-1, Naval Weapons Industrial Reserve Plant, Dallas, Texas Continued o Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 3- 11/09/94 11/14/94 03/25/95 04/17-18/95 09/18/95 03/27/96 194-96 Property or constituent Com. Com. Com. Com. ^ ^ Com- ^ . Corn- acterizatiol Grab . Grab . Grab Grab Grab . Grab posite . posite posite posite posite . posite sample . sample . sample . sample sample . sample sample sample sample sample sample sample -i 2. Volatile organic compounds Continued ff o-Chlorobenzene <0.2 <0.2 <0.2 <0.2 1 ,2,4-Trichlorobenzene <.2 <.2 <.2 <.2 1 1 ,3-Dichlorobenzene <.2 <.2 <.2 <.2 31 1 ,4-Dichlorobenzene <.2 <.2 <.2 <.2 3 TJ Naphthalene <.2 <.2 <.2 <.2 O 3 Hexachlorobenzene <.2 <.2 <.2 <.2 w 1 ,3-Dichlorobenzene, water, unfiltered, ~ <.2 <.2 <.2 ~ <.2 <.2 - <.2 recoverable (M-g/L) 1o 1 ,4-Dichlorobenzene, water, unfiltered, <.2 ~ <.2 <.2 ~ <.2 <.2 -- <.2 to o. recoverable (llg/L) to 1 ,2-Diphenylhydrazine, water, total recoverable ~ <5 <5 <5 ~ <5 <5 - <5 I mg/f fl '\ D) Hexachlorobutadiene, total (llg/L) - <.2 ~ <.2 - <.2 ~ <.2 <.2 - <.2 | (0 Naphthalene, total (|xg/L) - <.2 -- <.2 - <.2 ~ <.2 <.2 - <.2 a 1 ,2,4-Trichlorobenzene, water, unfiltered, <.2 ~ <.2 ~ <.2 ~ <.2 <.2 -- <.2 recoverable (lig/L) iD) Acenaphthene, total (|xg/L) ~ <5 -- <5 ~ <5 - <5 <5 ~ <5 (0 5?£ w2 Table 6. Stormwater chemical data at site NWIRP-1, Naval Weapons Industrial Reserve Plant, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/09/94 11/14/94 03/25/95 04/17-18/95 09/18/95 03/27/96 Property or constituent Corn- _ Corn- _ Corn- Corn- Grab C°m" Corn- Grab Grab Grab Grab Grab posite posite posite posite posite posite sample sample sample sample sample sample sample sample sample sample sample sample Semivolatile organic compounds Continued Benzo[a]pyrene, total (jig/L) Benzo[b]fluoranthene, total (\ig/L) Benzo[k]fluoranthene, total Qig/L) Benzo[g,h,i]perylene, total (jig/L) 4-Bromophenylphenol ether, total (jig/L) <5 <5 <5 <5 <5 <5 n-Butyl benzyl phthalate, total (jig/L) <5 <5 <5 <5 <5 <5 bis(2-Chloroethoxy)methane, total (jig/L) <5 <5 <5 <5 <5 <5 bis(2-Chloroethyl) ether, total (\ig/L) <5 <5 <5 <5 <5 <5 bis(2-Chloroisopropyl) ether, total (jig/L) <5 <5 <5 <5 <5 <5 p-Chloro-m-cresol, total (\LgfL) <30 <30 <30 <30 <30 <30 2-Chloronaphthalene, total (jig/L) <5 <5 <5 <5 <5 <5 2-Chlorophenol, total (jig/L) <5 <5 <5 <5 <5 <5 4-Chlorophenyl phenylether, total (jig/L) <5 <5 <5 <5 <5 <5 Chrysene, total (jig/L) 1,2,5,6-Dibenzanthracene, total (jig/L) 3,3'-Dichlorobenzidine, total (jig/L) <20 <20 <20 <20 <20 <20 2,4-Dichlorophenol, total (jig/L) <5 <5 <5 <5 <5 <5 Diethyl phthalate, total (jig/L) <5 <5 <5 <5 <5 <5 Dimethylphthalate, total (Hg/L) <5 <5 <5 <5 <5 <5 2,4-Dimethylphenol, total (jig/L) <5 <5 <5 <5 <5 <5 Di-n-butyl phthalate, total (M£/L) <5 <5 <5 <5 <5 <5 4,6-Dinitro-o-cresol, total (\igfL) <30 <30 <30 <30 <30 <30 2,4-Dinitrophenol, total (jig/L) <20 <20 <20 <20 <20 <20 2,4-Dinitrotoluene, total (jig/L) <5 <5 <5 <5 <5 <5 Table 6. Stormwater chemical data at site NWIRP-1, Naval Weapons Industrial Reserve Plant, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/09/94 11/14/94 03/25/95 04/17-18/95 09/18/95 03/27/96 1994-96 Characterizatiol Property or constituent Corn- Corn- Corn- Com Corn- Corn- Grab Grab Grab . Grab Grab Grab posite posite posite posite posite posite sample sample sample sample sample sample sample sample sample sample sample sample _< a Semivolatile organic compounds Continued ! 2,6-Dinitrotoluene, total (|J,g/L) <5 <5 <5 <5 <5 <5 1 Di-n-octyl phthalate, total (^ig/L) <10 <10 <10 <10 <10 <10 i bis(2-Ethylhexyl)phthalate, total (fig/L) <5 <5 <5 <5 <5 <5 33 Fluoranthene, total (M-g/L) <5 <5 <5 <5 <5 <5 3 n Fluorene, total (ng/L) <5 <5 <5 <5 <5 <5 5 Hexachlorobenzene, total (M-g/L) <5 <5 <5 <5 <5 <5 Hexachlorocyclopentadiene, total (M-g/L) <5 <5 <5 <5 <5 <5 (0 uz Hexachloroethane, total (|J,g/L) <5 <5 <5 <5 <5 <5 i ~ Indeno[l,2,3-c,d]pyrene, total (M-g/L) <10 <10 <10 <10 <10 <10 Isophorone, total (M-g/L) <5 <5 <5 <5 <5 <5 I o Nitrobenzene, total (M-g/L) <5 <5 <5 <5 <5 <5 3 U N-Nitrosodimethylamine, total (|J,g/L) <5 <5 <5 <5 <5 <5 0. uz 2-Nitrophenol, total (|ig/L) <5 <5 <5 <5 <5 <5 1 4-Nitrophenol, total (M-g/L) <30 <30 <30 <30 <30 <30 N-nitrosodi-n-propylamine, total (M-g/L) <5 <5 <5 <5 <5 <5 T3g O N-nitrosodiphenylamine, total (|J,g/L) <5 <5 <5 <5 <5 <5 0) 0. Pentachlorophenol, total (|J,g/L) <30 <30 <30 <30 <30 <30 Phenanthrene, total (M-g/L) <5 <5 <5 <5 <5 <5 2.a SL Phenol (C6H5OH), total (|ig/L) <5 <5 <5 <5 <5 <5 33 8 Pyrene, total (M-g/L) <5 <5 <5 <5 <5 <5 i T3 2,4,6-Trichlorophenol, total (M-g/L) <20 <20 <20 <20 <20 <20 u s Organochlorine pesticides/polychlorinated biphenyls o Aldrin (|J,g/L) <.05 5*SL <.05 <.05 <.05 <.05 <.05 alpha-BHC (|ig^) <.05 <.05 <.05 <.05 <.05 <.05 5? beta-BHC (|ag/L) <.05 <.05 <.05 <.05 <.05 <.05 0>S delta-BHC (M-g/L) <.05 <.05 <.05 <.05 <.05 <.05 Table 6. Stormwater chemical data at site NWIRP-1, Naval Weapons Industrial Reserve Plant, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/09/94 11/14/94 03/25/95 04/17-18/95 09/18/95 03/27/96 Property or constituent _ Corn- _ . Corn- Corn- Com _ Corn- Corn- Grab Grab Grab . Grab Grab Grab posite posite , posite posite posite posite sample sample sample sample sample sample sample sample sample sample sample sample Organochlorine pesticides/polychlorinated biphenyls Continued gamma-BHC (Lindane) (\ig/L) <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 alpha-Chlordane (M-g/L) <.50 <.50 <.50 <.50 <.50 <.50 gamma-Chlordane (\igfL) <.50 <.50 <.50 <.50 <.50 <.50 4-4'-DDD (\ig/L) <.10 <.10 <.10 <.10 <.10 <.10 4-4'-DDE (\ig/L) <.10 <.10 <.10 <.10 <.10 <.10 4-4'-DDT (\ig/L) <.10 <.10 <.10 <.10 <.10 <.10 Dieldrin (M-g/L) <.05 <.05 <.05 <.05 <.05 <.05 Endosulfan I (M-g/L) <.05 <.05 <.05 <.05 <.05 <.05 Endosulfan II (\ig/L) <.10 <.10 <.10 <.10 <.10 <.10 Endosulfan sulfate (\ig/L) <.10 <.10 <.10 <.10 <.10 <.10 Endrin (\ig/L) <.06 <.06 <.06 <.06 <.06 <.06 Endrin aldehyde (^ig/L) <.10 <.10 <.10 <.10 <.10 <.10 Heptachlor (p.g/L) <.05 <.05 <.05 <.05 <.05 <.05 Heptachlor epoxide (\igfL) <.05 <.05 <.05 <.05 <.05 <.05 Methoxychlor (ug/L) <.50 <.50 <.50 <.50 <.50 <.50 Toxaphene (M^g/L) PCB Aroclor 1016 (^g/L) PCB Aroclor 1221 (\igfL) PCB Aroclor 1232 ftig/L) PCB Aroclor 1242 (^g/L) PCB Aroclor 1248 (ug/L) g. PCB Aroclor 1254 (ug/L) A PCB Aroclor 1260 (^ig/L) o> o Table 6. Stormwater chemical data at site NWIRP-1, Naval Weapons Industrial Reserve Plant, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/09/94 11/14/94 03/25/95 04/17-18/95 09/18/95 03/27/96 Property or constituent Corn- _ . Corn- Corn- Corn- Corn- Corn- Grab Grab Grab Grab Grab Grab posite posite posite posite posite posite sample sample sample sample sample sample sample sample sample sample sample sample Organophosphorus pesticides Azinophos-methyl (guthion) (p.g/L) <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 Bolstar (sulprofos) (M-g/L) <.50 <.50 <.50 <.50 <.50 <.50 Chlorpyrifos (dursban) (\igfL) <.25 <.25 <.25 <.25 <.25 <.25 Coumaphos (|ig/L) <.50 <.50 <.50 <.50 <.50 <.50 Demeton O&S (ng/L) <.25 <.25 <.25 <.25 <.25 <.25 Diazinon (|ig/L) <.25 <.25 <.25 <.25 <.25 <.25 Dichlorvos (vapona) (p.g/L) <.50 <.50 <.50 <.50 <.50 <.50 Dimethoate (p.g/L) <.50 <.50 <.50 <.50 <.50 <.50 Dosulfoton (p,g/L) <.25 <.25 <.25 <.25 <.25 <.25 Ethoprop (M£/L) <.25 <.25 <.25 <.25 <.25 <.25 Fensulfothion (M-g/L) <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 Fenthion (baytex) (ng/L) <.25 <.25 <.25 <.25 <.25 <.25 Malathion (|ig/L) <1.2 <1.2 <1.2 <1.2 <1.2 - <1.2 Merphos (ng/L) <.25 <.25 <.25 <^5 <.25 <.25 Mevinphos (phosdrin) (p.g/L) <6.2 <6.2 <6.2 <6.2 <6.2 <6.2 Naled (dibrom) (M-g/L) - <10 - <10 - <10 - <10 - <10 - <10 Ethyl parathion (p.g/L) <.25 <.25 <.25 <.25 <.25 <.25 Methyl parathion (M-g/L) <.25 <.25 <.25 <.25 <.25 <.25 Phorate (thimet) (ng/L) <.25 <.25 <.25 <.25 <.25 <.25 Ronnel (M-g/L) <.25 <.25 <.25 <.25 <.25 <.25 Sulfotepp (ng/L) <.25 <.25 <.25 <.25 <.25 <.25 Stirophos (tetrachlorovinphos) (}ig/L) <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 Tokuthion (prothiophos) (M-g/L) <.25 <.25 <.25 <.25 <.25 <.25 Trichloronate (M-g/L) <.25 <.25 <.25 <.25 <.25 <.25 Table 7. Stormwater chemical data at site NWIRP-2, Naval Weapons Industrial Reserve Plant, Dallas, Texas [|lS/cm, microsiemens per centimeter at 25 °C; --, not analyzed; °C, degrees Celsius; mg/L, milligrams per liter; CaCO3, calcium carbonate; cols./100 mL, colonies per 100 milliliters; K, non-ideal colony count; <, less than; N, nitrogen; P, phosphorous; |lg/L, micrograms per liter] Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/09/94 11/14/94 01/12/95 01/26/95 09/18/95 03/27/96 Property or constituent _ . Corn- Com _ . Corn- Corn- Corn- Grab Grab . Grab Grab Grab Grab posite , posite posite posite posite posite sample sample sample sample sample sample sample sample sample sample sample sample Properties Specific conductance (nS/cm) 208 115 718 143 401 560 200 591 124 315 pH, water, whole, field (standard units) 8.0 7.2 7.1 7.5 7.9 7.8 7.6 7.7 7.9 8.0 7.7 7.9 Temperature, water (°C) 20.5 24.0 -- 18.0 ~ 12.0 25.0 9.0 Oxygen demand, chemical (high level) (mg/L) 23 13 33 25 28 28 Oxygen demand, biochemical, 5-day (mg/L) 4.6 1.4 2.9 1.9 4.6 3.8 Hardness, calculated (mg/L as CaCO3) 37 46 120 65 43 32 Alkalinity, water, dissolved, fixed-endpoint 41 50 150 27 49 33 titration, field (mg/L as CaCO3) Bacteria Coliforms, fecal (cols./100 mL) K990 1,600 - K180 ~ 770 9,300 K250 Streptococci, fecal (cols./100 mL) K700 1,600 -- K45 ~ 800 580 1,500 Major ions Calcium, dissolved (mg/L) 14 17 43 24 16 12 Magnesium, dissolved (mg/L) .61 .89 2.8 1.3 .70 .50 Sodium, dissolved (mg/L) 6.0 9.4 35 14 8.3 4.9 Potassium, dissolved (mg/L) 1.7 1.4 3.5 1.6 2.2 1.6 Sulfate, dissolved (mg/L) 6.3 9.0 30 12 8.1 6.9 Chloride, dissolved (mg/L) 2.5 4.0 14 5.2 3.0 2.1 Solids Residue, total at 105 °C, suspended (mg/L) 5 11 13 38 <1 27 Solids, residue at 180 °C, dissolved (mg/L) 63 72 242 112 76 61 Table 7. Stormwater chemical data at site NWIRP-2, Naval Weapons Industrial Reserve Plant, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/09/94 11/14/94 01/12/95 01/26/95 09/18/95 03/27/96 Characterizatiol Property or constituent Com Com Com Com _ Corn- _ Corn- Grab Grab Grab Grab Grab Grab posite posite posite posite posite posite sample sample sample sample sample sample sample sample sample sample sample sample _» 8, Nutrients 0 Nitrogen, nitrite plus nitrate, total (mg/L as N) 0.26 __ 0.31 __ 0.56 ._ 0.32 0.55 0.57 3 Nitrogen, Kjeldahl, total (mg/L as N) -- <.5 - .69 - <.5 ~ <.5 <.5 <5 i Phosphorus, total (mg/L as P) -- <.05 -- <.05 -- <.05 - <.05 <.05 .11 3D Phosphorus, dissolved (mg/L as P) -- <.05 -- <.05 -- <.05 -- <.05 .11 <.05 i It-ace elements o7 Aluminum, total (|ig/L) <200 220 <200 <200 <200 320 <200 1,300 70 ._ 3 5- Antimony, total (|ig/L) <200 <200 <200 <200 <200 <200 <200 <200 <10 -- (D Z Arsenic, total (|ig/L) <300 <300 <300 <300 <300 <300 <300 <300 2 2 1 <1 1 Barium, total (M-g/L) <100 <100 <100 <100 <100 <100 100 <100 CO Beryllium, total (M-g/L) <2 <2 <2 <2 <2 <2 <2 <2 <10 <10 <10 <10 5'§ Cadmium, total (|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 <1 <1 <1 <1 3 Chromium, total (M-g/L) <30 <30 <30 <30 <30 <30 <30 <30 6 <1 6 6 D) a Cobalt, total (|ig/L) <40 <40 <40 <40 <40 <40 <40 <40 .. z i Copper, total (M-g/L) <30 <30 <30 <30 <30 <30 <30 <30 6 2 16 9 i Cyanide, total (|ig/L) <10 -- <10 -- <10 -- <10 -- <10 <10 D) Iron, total (M-g/L) 380 290 320 330 420 580 760 1,700 200 940 (05" Lead, total (|ig/L) <200 <200 <200 <200 <200 <200 <200 <200 17 1 11 13 a Manganese, total (|ig/L) 80 25 64 39 79 72 190 110 70 50 1 2 2. Mercury, total (|ig/L) <2 <.2 <.2 <.2 <.2 <2 <.2 <.2 <.l <.l <.l <.l -- -- 8 Molybdenum, total (|ig/L) 48 <40 <40 <40 47 <40 <40 <40 (D Nickel, total (|ig/L) <40 <40 <40 <40 <40 <40 <40 <40 3 1 2 2 TJ 5T Selenium, total (|ig/L) <400 <400 <400 <400 <400 <400 <400 <400 <1 <1 <1 <1 3 Silver, total (|ig/L) <30 <30 <30 <30 <30 <30 <30 <30 <1 <1 <1 <1 Thallium, total (|ig/L) ------<5 - I Vanadium, total (|ig/L) <40 <40 <40 <40 <40 <40 <40 <40 .. -- Zinc, total (|ig/L) 19 (0i 62 14 82 11 93 28 180 110 20 210 140 Table 7. Stormwater chemical data at site NWIRP-2, Naval Weapons Industrial Reserve Plant, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/09/94 11/14/94 01/12/95 01/26/95 09/18/95 03/27/96 Property or constituent Com Com Com Com- ^ ^ Com- ^ Com- Grab Grab Grab Grab Grab Grab posite posite posite posite . posite . posite sample sample sample sample sample . sample sample sample sample sample sample sample Carbon Carbon, organic, total (mg/L) 5.4 4.2 -- 9.7 6.3 -- 7.6 -- 5.9 Organic compounds Oil and grease, total, gravimetric (mg/L) 2 Phenols, total (u.g/L) 1 <1 -- 3 Volatile organic compounds Chloromethane (Hg/L) Bromomethane (Hg/L) <10 <10 Vinyl chloride (Hg/L) <11 .6 .3 <.2 <.2 Chloroethane (Hg/L) <10 <10 Methylene chloride (Hg/L) <17 <17 <17 <17 <17 <17 <17 <17 <.2 <.2 <.2 <.2 Acetone (Hg/L) <50 <50 <50 <50 <50 <50 <50 <50 Carbon disulfide (Hg/L) <5 <5 <5 <5 <5 <5 <5 <5 1 , 1 -Dichloroethylene (Hg/L) <4 <4 <4 <4 <4 <4 <4 <4 <.2 <.2 <.2 <.2 1,1-Dichloroethane (ng/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 1,2-Dichloroethylene, total (Hg/L) <5 <5 9.5 <5 12 <5 <5 <5 Chloroform (ng/L) <5 <5 <5 <5 <5 <5 <5 6.5 <.2 <.2 <.2 <.2 1,2-Dichloroethane (ng/L) <50 <50 <50 <50 <50 <50 <50 <50 <.2 <.2 <.2 <.2 2-Butanone (ng/L) <5 <5 <5 <5 <5 <5 <5 <5 1,1,1-Trichloroethane (ng/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 4.1 3.5 Carbon tetrachloride (Hg/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 Bromodichloromethane (ng/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <-2 51 1,2-Dichloropropane (\LgfL) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 O" <5" trans-l,3-Dichloropropene (Hg/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 -j Trichloroethylene (ng/L) <5 <5 19 <5 22 25 <5 11 19 4.8 19 3.1 s Dibromochloromethane (Hg/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 2 Table 7. Stormwater chemical data at site NWIRP-2, Naval Weapons Industrial Reserve Plant, Dallas, Texas Continued o Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/09/94 11/14/94 01/12/95 01/26/95 09/18/95 03/27/96 Property or constituent Com Com Com Com Com- ^ Corn- Grab Grab Grab Grab Grab . Grab 1 posite posite posite posite posite . posite sample sample sample sample sample sample 5" sample sample sample sample sample sample 3 a Volatile organic compounds Continued s 1,1,2-Trichloroethane (|ig/L) <5 <5 <5 <5 <5 <5 <5 <5 <0.2 <0.2 <0.2 <0.2 Benzene (|Ag/L) <5 <5 <5 <5 <5 <5 <5 <5 <.2 <.2 <.2 <.2 ! Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/09/94 11/14/94 01/12/95 01/26/95 09/18/95 03/27/96 Property or constituent ^ L Com- ^ Com- ^ Com- Com- ^ Com- Corn- Grab . Grab . Grab , Grab . Grab . Grab posite posite . posite . posite posite posite sample . sample . sample . sample . sample . sample sample sample sample sample sample sample Volatile organic compounds Continued trans-l,4-Dichloro-2-butene (ng/L) <50 <50 <50 <50 <50 <50 <50 <50 <0.2 <0.2 <0.2 <0.2 trans-l,2-Dichloroethylene (ng/L) <.2 <.2 <.2 <.2 cis-l,2-Dichloroethylene (Hg/L) 14 3.5 12 2.4 1,1-Dichloropropene (ng/L) <.2 <.2 <.2 <.2 2,2-Dichloropropane (Hg/L) 1,3-Dichloropropane (Hg/L) 1,2,4-Trimethylbenzene (pseudocumene) (ng/L) Isopropylbenzene (^g/L) n-Propylbenzene (Hg/L) 1,3,5-Trimethylbenzene (mesitylene) (Hg/L) 2-Chlorotoluene (^g/L) 4-Chlorotoluene (Hg/L) Bromochloromethane (ng/L) n-Butylbenzene (Hg/L) sec-Butylbenzene (ng/L) tert-Butylbenzene (Hg/L) p-Isopropyltoluene (^g/L) 1,1,1,2-Tetrachloroethane (Hg/L) 1,2,3-Trichlorobenzene (Hg/L) 1,2-Dibromomethane (ng/L) 1,1,2-Trichloro-1,2,2-trifluoroethane (ng/L) Methyl tert-butylether (ng/L) .4 .2 .6 CT (D Bromobenzene (ng/L) l,2-Dibromo-3-chloropropane (ng/L) Table 7. Stormwater chemical data at site NWIRP-2, Naval Weapons Industrial Reserve Plant, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/09/94 11/14/94 01/12/95 01/26/95 09/18/95 03/27/96 1994-96 Characterizatior Property or constituent ^ ._ Corn- _ . Corn- Corn- Corn- Corn- Corn- Grab Grab Grab Grab Grab Grab posite posite posite posite posite posite sample sample sample sample sample sample 1 sample sample sample sample sample sample 3. Volatile organic compounds Continued o-Chlorobenzene <0.2 <0.2 <0.2 <0.2 1,2,4-Trichlorobenzene | 1.3-Dichlorobenzene 3) c 1.4-Dichlorobenzene O Naphthalene o 3 Hexachlorobenzene (D Semivolatile organic compounds B> o-Chlorobenzene, water, unfiltered, recoverable (k.2 -- <0.2 - <0.2 <0.2 § (Mfi/D 1.3-Dichlorobenzene, water, unfiltered, recoverable (|ig/L) O 1.4-Dichlorobenzene, water, unfiltered, B> recoverable (|ig/L) Q. 1,2-Diphenylhydrazine, water, total recoverable <5 <5 <5 <5 <5 <5 Hexachlorobutadiene, total (|ig/L) £o Naphthalene, total (|ig/L) a. 1,2,4-Trichlorobenzene, water, unfiltered, recoverable (|ig/L) I 2. Acenaphthene, total (|ig/L) <5 <5 <5 <5 <5 <5 31 (D £ Acenaphthylene, total (|ig/L) <5 <5 <5 <5 <5 <5 (D Anthracene, total (p,g/L) <5 <5 <5 <5 <5 <5 2 B> Benzidine, total (|ig/L) <40 <40 <40 <40 <40 <40 Benzo[a]anthracene, total (|ig/L) Table 7. Stormwater chemical data at site NWIRP-2, Naval Weapons Industrial Reserve Plant, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/09/94 11/14/94 01/12/95 01/26/95 09/18/95 03/27/96 Property or constituent Corn- ^ ._ Corn- Corn- ^ Corn- ^ Corn- Corn- Grab Grab Grab Grab Grab Grab posite posite posite posite posite posite sample sample sample sample sample sample sample sample sample sample sample sample Semivolatile organic compounds Continued Benzo[a)pyrene, total ((J-g/L) Benzo[b]fluoranthene, total (|J,g/L) Benzo[k]fluoranthene, total ((J-g/L) Benzo[g,h,i]perylene, total (|Og/L) 4-Bromophenylphenol ether, total ((J-g/L) <5 <5 <5 <5 <5 <5 n-Butyl benzyl phthalate, total (|J.g/L) <5 <5 <5 <5 <5 <5 bis(2-Chloroethoxy)methane, total (|0,g/L) <5 <5 <5 <5 <5 <5 bis(2-Chloroethyl) ether, total (|Ag/L) <5 <5 <5 <5 <5 <5 bis(2-Chloroisopropyl) ether, total (|J,g/L) <5 <5 <5 <5 <5 <5 p-Chloro-m-cresol, total (|J,g/L) <30 <30 <30 <30 <30 <30 2-Chloronaphthalene, total (jig/L) <5 <5 <5 <5 <5 <5 2-Chlorophenol, total (|ig/L) <5 <5 <5 <5 <5 <5 4-Chlorophenyl phenylether, total ((J-g/L) <5 <5 <5 <5 <5 Chrysene, total ((J-g/L) 1,2,5,6-Dibenzanthracene, total ((J-g/L) 3,3'-Dichlorobenzidine, total (|J,g/L) <20 <20 <20 <20 <20 <20 2,4-Dichlorophenol, total (|0,g/L) <5 <5 <5 <5 <5 <5 Diethyl phthalate, total (|J,g/L) <5 <5 <5 <5 <5 <5 Dimethylphthalate, total (jig/L) <5 <5 <5 <5 <5 <5 2,4-Dimethylphenol, total (|ig/L) <5 <5 <5 <5 <5 <5 Di-n-butyl phthalate, total (|0,g/L) <5 <5 <5 <5 <5 <5 4,6-Dinitro-o-cresol, total (|Jg/L) <30 <30 <30 <30 <30 <30 2 (D 2,4-Dinitrophenol, total (|0,g/L) <20 <20 <20 <20 <20 <20 2,4-Dinitrotoluene, total (|0,g/L) <5 <5 <5 <5 <5 <5 g Table 7. Stormwater chemical data at site NWIRP-2, Naval Weapons Industrial Reserve Plant, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/09/94 11/14/94 01/12/95 01/26/95 09/18/95 03/27/96 Property or constituent Corn- Corn- Com Corn- ^ . Corn- Grab Grab Grab . Grab Grab Grab posite posite posite posite posite posite sample sample sample sample sample sample sample sample sample sample sample sample Semivolatile organic compounds Continued 8 2,6-Dinitrotoluene, total (|ig/L) <5 <5 <5 <5 <5 <5 Di-n-octyl phthalate, total (|^g/L) <10 <10 <10 <10 <10 <10 bis(2-Ethylhexyl) phthalate, total (|J.g/L) <5 <5 <5 <5 <5 <5 Fluoranthene, total (|^g/L) <5 <5 <5 <5 <5 <5 Fluorene, total (|^g/L) <5 <5 <5 <5 <5 <5 Hexachlorobenzene, total (|^g/L) <5 <5 <5 <5 <5 <5 Hexachlorocyclopentadiene, total (|J.g/L) <5 <5 <5 <5 <5 <5 Hexachloroethane, total (|^g/L) <5 <5 <5 <5 <5 <5 I Indeno[l,2,3-c,d]pyrene, total (|^g/L) - <10 - <10 - <10 <10 - <10 - <10 Isophorone, total (|ig/L) <5 <5 <5 <5 <5 <5 !o Nitrobenzene, total (|^g/L) <5 <5 <5 <5 <5 <5 a N-Nitrosodimethylamine, total (Hg/L) <5 <5 <5 <5 <5 <5 2-Nitrophenol, total (|^g/L) <5 <5 <5 <5 <5 <5 I 4-Nitrophenol, total (|^g/L) <30 <30 <30 <30 <30 <30 o> N-nitrosodi-n-propylamine, total (|^g/L) <5 <5 <5 <5 <5 <5 | N-nitrosodiphenylamine, total (|Xg/L) <5 <5 <5 <5 <5 <5 (05" a Pentachlorophenol, total (|^g/L) <30 <30 <30 <30 <30 <30 Phenanthrene, total (|^g/L) <5 <5 <5 <5 <5 <5 I a Phenol (C6H5OH), total (|^g/L) <5 <5 <5 <5 <5 <5 Pyrene, total (|^g/L) <5 <5 <5 <5 <5 <5 4-4'-DDE(ng/L) <.10 <10 <.10 <.10 <.10 <.10 4-4'-DDT (ng/L) <.10 <10 <10 <.10 <.10 <.10 Dieldrin (Hg/L) <.05 <.05 <.05 <.05 <.05 <.05 Endosulfan I (\ig/L) <.05 <.05 <.05 <.05 <.05 <.05 Endosulfan II (ng/L) <10 <10 <10 <.10 <.10 <.10 Endosulfan sulfate (ng/L) <.10 <.10 <10 <10 <.10 <.10 Endrin (Hg/L) <.06 <.06 <.06 <.06 <.06 <.06 Endrin aldehyde (ng/L) <10 <.10 <10 <.10 <10 <.10 Heptachlor (ng/L) <.05 <.05 <.05 <.05 <.05 <.05 Heptachlor epoxide (ng/L) <.05 <.05 <.05 <.05 <.05 <.05 Methoxychlor (Hg/L) <.50 <.50 <.50 <.50 <.50 <.50 Toxaphene (Hg/L) PCB Aroclor 1016 (ng/L) PCB Aroclor 1221 (ng/L) PCB Aroclor 1232 (ng/L) PCB Aroclor 1242 (jig/L) PCB Aroclor 1248 (ng/L) PCB Aroclor 1254 (ng/L) PCB Aroclor 1260 (jig/L) Table 7. Stormwater chemical data at site NWIRP-2, Naval Weapons Industrial Reserve Plant, Dallas, Texas Continued Storm 1 Storm 2 Storm 3 Storm 4 Storm 5 Storm 6 11/09/94 11/14/94 01/12/95 01/26/95 09/18/95 03/27/96 1994-96 Characterizatiol Property or constituent Corn- _ . Corn- Corn- Corn- Corn- Corn- Grab Grab Grab Grab Grab Grab posite posite posite posite posite posite sample sample sample sample sample sample sample sample sample sample sample sample _» o^ Organophosphorus pesticides g Azinophos-methyl (guthion) (Hg/L) <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 Bolstar (sulprofos) (Hg/L) <.50 <.50 <.50 <.50 <.50 <.50 0 i Chlorpyrifos (dursban) (Hg/L) <.25 <.25 <.25 <.25 <.25 <.25 c Coumaphos (Hg/L) <.50 <.50 <.50 <.50 <.50 <.50 i n Demeton O&S (Hg/L) <.25 <.25 <.25 <.25 <.25 <.25 § Diazinon (Hg/L) <.25 <.25 <.25 <.25 <.25 <.25 (D Dichlorvos (vapona) (ng/L) <.50 <.50 <.50 <.50 <.50 <.50 <.50 1 Dimethoate (Hg/L) <.50 <.50 <.50 <.50 <.50 0_ ? Dosulfoton (Hg/L) <.25 <.25 <.25 <.25 <.25 <.25 Ethoprop (Hg/L) <.25 <.25 I5' <.25 <.25 <.25 <.25 Fensulfothion (Hg/L) <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 0 a Fenthion (baytex) (Hg/L) <.25 <.25 <.25 <.25 <.25 <.25 < Malathion (Hg/L) <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 1 Merphos (Hg/L) <.25 <.25 <.25 <.25 <.25 <.25 "o0 Mevinphos (phosdrin) (Hg/L) <6.2 <6.2 <6.2 <6.2 <6.2 <6.2 5"CO Naled (dibrom) (Hg/L) <10 <10 <10 <10 <10 <10 ac 1 Ethyl parathion Qig/L) <.25 <.25 <.25 <.25 <.25 <.25 0_ 3) Methyl parathion (Hg/L) <.25 <.25 <.25 <.25 <.25 <.25 (D Phorate (thimet) (}ig/L) <.25 <.25 <.25 <.25 <.25 <.25 i Ronnel (ng/L) <.25 <.25 <.25 <.25 <.25 <.25 0" 3 Sulfotepp (jig/L) <.25 <.25 <.25 <.25 <.25 <.25 E Stirophos (tetrachlorovinphos) (p-g/L) <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 0 CO Tokuthion (prothiophos) (jig/L) <.25 <.25 <.25 <.25 <.25 <.25 Trichloronate (ng/L) <.25 <.25 <.25 <.25 <.25 <.25 if0 CO Table 8. Number of trace element, volatile organic compound, semivolatile organic compound, and organophosphorus pesticide detections at fixed sites, Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas NAS-1 NAS-2 NAS-3 NWIRP-1 NWIRP-2 Constituent Grab Composite Grab Composite Grab Composite Grab Composite Grab Composite sample sample sample sample sample sample sample sample sample sample Trace elements Aluminum, total 3 5 4 6 3 3 2 5 0 4 Arsenic, total 2 0 2 1 0 0 2 0 2 1 Barium, total 0 0 0 0 0 1 1 0 1 0 Cadmium, total 3 2 2 0 2 2 1 0 0 0 Chromium, total 2 2 2 2 2 2 3 5 2 1 Copper, total 3 3 4 2 3 2 3 2 2 2 Iron, total 4 5 4 6 4 5 4 6 4 6 Lead, total 2 2 2 2 2 2 2 2 2 2 Manganese, total 4 5 4 6 4 5 4 6 4 6 Mercury, total 1 0 0 0 0 0 0 0 0 0 Molybdenum, total 0 0 0 0 0 0 1 1 2 0 Nickel, total 2 2 2 2 2 2 2 2 2 2 Silver, total 0 0 0 0 0 0 1 0 0 0 Zinc, total 6 6 6 6 5 6 6 6 6 6 Volatile organic compounds Chloromethane 0 0 0 0 0 0 0 1 0 0 Vinyl chloride 0 0 0 0 0 0 2 1 1 1 Chloroethane 0 1 0 0 0 0 0 0 0 0 Methylene chloride 0 2 0 1 0 1 0 1 0 0 Acetone 0 0 1 2 0 0 0 0 0 0 1 , 1 -Dichloroethylene 0 0 0 0 0 0 2 0 0 0 1,2-Dichloroethylene, total 0 0 0 0 0 0 1 0 2 0 Chloroform 1 0 0 0 0 0 0 0 0 1 0) 1,1,1 -Trichloroethane 0 0 0 0 0 0 0 1 1 1 cr CD Bromodichloromethane 1 0 0 0 0 0 0 0 0 0 oo Trichloroethylene 0 0 0 0 0 0 4 4 4 4 Benzene 0 0 1 4 0 0 0 0 0 0 Table 8. Number of trace element, volatile organic compound, semivolatile organic compound, and organophosphorus pesticide detections at fixed sites, Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas Continued NAS-1 NAS-2 NAS-3 NWIRP-1 NWIRP-2 1994-96 Characterize Constituent Grab Composite Grab Composite Grab Composite Grab Composite Grab Composite sample sample sample sample sample sample sample sample sample sample o' Volatile organic compounds Continued a w Toluene 0 0 3 5 1 0 1 0 0 0 o Ethylbenzene 0 0 1 4 0 0 0 0 0 0 3 Xylenes, total 0 0 4 6 1 2 0 0 0 0 1 cis- 1 ,2-Dichloroethylene 0 0 0 0 0 0 2 2 2 2 3) c 1 ,2,4-Trimethylbenzene (pseudocumene) 0 1 1 2 1 1 0 0 0 0 * Isopropylbenzene 0 0 0 2 0 0 0 0 0 0 o n-Propylbenzene 0 0 1 2 0 1 0 0 0 0 (D 1 ,3,5-Trimethylbenzene (mesitylene) 0 1 1 2 0 1 0 0 0 0 Z 0)1 n-Butylbenzene 0 0 0 1 0 0 0 0 0 0 > sec-Butylbenzene 0 0 1 2 0 1 0 0 0 0 I p-Isopropyltoluene 0 0 1 2 0 1 0 0 0 0 A O 1 , 1 ,2-Trichloro- 1 ,2,2-trifluoroethane 0 1 0 0 0 0 0 0 0 0 3 ffl Methyl tert-butylether 0 2 2 2 2 0 0 2 i. 1 1 Z 0) Naphthalene 0 1 1 2 1 1 0 0 0 0 Semivolatile organic compounds 1IB Naphthalene, total ~ 0 -- 2 ~ 0 " 0 " 0 § Benzidine, total _. 0 __ 0 _ 2 _ 0 _ 0 CO 5" 2,4-Dimethylphenol, total 0 « 1 0 0 ~ 0 0. a~ bis(2-Ethylhexyl)phthalate, total 1 0 0 0 ~ 0 §! -- ~ ~ -- ~ 3) Fluoranthene, total 0 0 1 0 0 s Phenol (C6H5OH), total -- 0 -- 1 - 0 -- 0 -- 0 (D Organophosphorus pesticides TJ Diazinon -- 0 -- -- 0 - 0 -- 0 I 1 O Stirophos (tetrachlorovinphos) -- 0 - 1 - 2 -- 0 -- 0 8» Table 9. Number of trace element and volatile organic compound detections that exceed maximum contaminant levels at fixed sites, Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas [MCL, maximum contaminant level established by the U.S. Environmental Protection Agency (1996); jig/L, micrograms per liter] NAS-1 NAS-2 NAS-3 NWIRP-1 NWIRP-2 MCL Constituent (Ml/L) Grab Composite Grab Composite Grab Composite Grab Composite Grab Composite !sample sample sample sample sample sample sample sample sample sample Trace elements Arsenic, total 50 0 0 0 0 0 0 0 0 0 0 Barium, total 2,000 0 0 0 0 0 0 0 0 0 0 Cadmium, total 5 2 0 0 0 0 0 1 0 0 0 Chromium, total 100 0 0 0 0 0 0 0 0 0 0 Mercury, total 2 0 0 0 0 0 0 0 0 0 0 Volatile organic compounds Vinyl chloride 2.0 0 0 0 0 0 0 0 0 0 0 1 , 1 -Dichloroethylene 7.0 0 0 0 0 0 0 0 0 0 0 1,1,1 -Trichloroethane 200 0 0 0 0 0 0 0 0 0 0 Trichloroethylene 5.0 0 0 0 0 0 0 4 4 4 2 Benzene 5.0 0 0 1 4 0 0 0 0 0 0 Toluene 1,000 0 0 0 0 0 0 0 0 0 0 Ethylbenzene 700 0 0 0 0 0 0 0 0 0 0 Xylenes, total 10,000 0 0 0 0 0 0 0 0 0 0 cis- 1 ,2-Dichloroethylene 70 0 0 0 0 0 0 0 0 0 0 Table 10. Number of trace element detections that exceed effluent limits for discharge of hazardous metals at fixed sites, Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas [|ig/L, micrograms per liter] 2 £1 Effluent limit NAS-1 NAS-2 NAS-3 NWIRP-1 NWIRP-2 S 8.H' Constituent fag/I-) 1 o' Grab Composite Grab Composite Grab Composite Grab Composite Grab Composite Grab Composite 3, sample sample sample sample sample sample sample sample sample sample sample sample ^ Trace elements $ Arsenic, total 300 200 0 0 0 0 0 0 0 0 0 0 0) 5 Barium, total 4,000 2,000 0 0 0 0 0 0 0 0 0 0 ? Cadmium, total 200 100 0 0 0 0 0 0 0 0 0 0 §: Chromium, total 5,000 1,000 0 0 0 0 0 0 0 0 0 0 ^ | Copper, total 2,000 1,000 0 0 0 0 0 0 0 0 0 0 f Lead, total 1,500 1,000 0 0 0 0 0 0 0 0 0 0 £ Manganese, total 3,000 2,000 0 0 0 0 0 0 0 0 0 0 Mercury, total 10 5 0 0 0 0 0 0 0 0 0 0 w Nickel, total 3,000 2,000 0 0 0 0 0 0 0 0 0 0 8 5- Silver, total 200 100 0 0 0 0 0 0 0 0 0 0 » Zinc, total 6,000 2,000 0 0 0 0 0 0 0 0 0 0 Q. z l Texas Administrative Code .Title 30, chapter 3 19:-.319.22 effluent limits for discharge of hazardous metals into inland waters established by Texas Natural Resource » Conservation Commission (1986). 1 TaKIa 11 Mi imhor /-\f Hotor-tir\ne that tavr>tmH offli iont limito frvr Hior>'harno nf lAiotor /v r»thor r»atrr»loi im ci ihotonr>QO at frtfnH eitne MawalI Air ICO Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas i. [|ig/L, micrograms per liter; NA, not applicable; BTEX, benzene, toluene, ethylbenzene, and xylene] Effluent limit (ng/Lr, n *1 NAS-1 NAS-2 NAS-3 NWIRP-1 NWIRP-2 Dallas,Texas,Plant,trialReserve Constituent - Grab Grab Composite Grab Composite Grab Composite Grab Composite Grab Composite sample sample sample sample sample sample sample sample sample sample sample Lead, total 250 0 NA 0 NA 0 NA 0 NA 0 NA Benzene 50 0 NA 1 NA 0 NA 0 NA 0 NA BTEX, total 500 0 NA 0 NA 0 NA 0 NA 0 NA 1 Texas Administrative Code, Title 30, chapter 321:321. 134 effluent limits for discharge of water containing other petroleum substances established by the Texas Natural Resource Conservation Commission (1988). Table 12. Stormwater chemical data at grab sites, Naval Air Station, Dallas, Texas [|iS/cm, microsiemens per centimeter at 25 °C; --, not analyzed; °C, degrees Celsius; |ig/L, micrograms per liter; <, less than] GRAB-1 GRAB-2 GRAB-4 GRAB-5 Property or constituent 09/18/95 10/02/95 09/18/95 10/02/95 09/18/95 10/02/95 09/18/95 10/02/95 Properties Specific conductance (jiS/cm) 283 -- 121 -- 36 -- 724 -- pH, water, whole, field (standard units) 8.0 -- 7.9 - 8.4 -- 8.0 -- Temperature, water (°C) 25.5 26.0 26.0 26.0 25.0 24.0 25.5 24.5 Trace elements Arsenic, total (jig/L) 1 <1 1 2 <1 <1 <1 <1 Beryllium, total (jig/L) <10 <10 <10 <10 <10 <10 <10 <10 Cadmium, total (jig/L) 2 5 2 4 3 9 2 <1 Chromium, total (jig/L) 2.1 3.3 1.9 2.8 1.2 1.5 1.1 <1 Copper, total (jig/L) 5 22 10 12 3 9 9 3 Lead, total (jig/L) 10 20 12 19 5 5 4 1 Mercury, total (jig/L) <.l <.l <.l <.l <.l <.l .2 <.l Nickel, total Qig/L) 6 9 1 4 1 4 2 <1 Selenium, total (jig/L) <1 <1 <1 <1 <1 <1 <1 <1 Silver, total (jig/L) <1 <1 <1 <1 <1 <1 <1 <1 Zinc, total (jig/L) 90 310 60 170 160 550 320 80 Volatile organic compounds Chloromethane Qig/L) Bromomethane (jig/L) Vinyl chloride (jig/L) Chloroethane (jig/L) Methylene chloride (jig/L) .4 .9 1,1-Dichloroethylene (jig/L) 1,1 -Dichloroethane (jig/L) 12 Chloroform (jig/L) 2.1 1,2-Dichloroethane (jig/L) 1,1,1 -Trichloroethane (jig/L) Carbon tetrachloride (jig/L) Bromodichloromethane (jig/L) Table 12. Stormwater chemical data at grab sites, Naval Air Station, Dallas, Texas Continued GRAB-1 GRAB-2 GRAB-4 GRAB-5 o Property or constituent 09/18/95 10/02/95 09/18/95 10/02/95 09/18/95 10/02/95 09/18/95 10/02/95 £ Volatile organic compounds Continued 1,2-Dichloropropane (|ig/L) <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 o trans-l,3-Dichloropropene (|Xg/L) 9. Trichloroethylene (fig/L) Dibromochloromethane (jig/L) .5 1,1,2-Trichloroethane (|ig/L) 3) Benzene (|Xg/L) c cis-l,3-Dichloropropene ((ig/L) i 2-Chloroethyl vinyl ether (|Xg/L) Bromoform (|ig/L) 1,1,2,2-Tetrachloroethane (|ig/L) Tetrachloroethylene (fig/L) Toluene (^ig/L) Chlorobenzene (|ig/L) I5' Ethylbenzene (|Xg/L) o» a Trichlorofluoromethane ((ig/L) Xylenes, total (|Xg/L) Dibromomethane ((ig/L) I Dichlorodifluoromethane ((ig/L) Styrene (|Xg/L) <2 <2 a 1,2,3-Trichloropropane (fig/L) i» Vinyl acetate (|ig/L) trans-l,4-Dichloro-2-butene (|Xg/L; trans-l,2-Dichloroethylene (|Xg/L) cis-1,2-Dichloroethylene 1 o 5* 1,1 -Dichloropropene (|lg/L) 2,2-Dichloropropane (|lg/L) 1,3-Dichloropropane ((J-g/L) 1,2,4-Trimethylbenzene (pseudocumene) (|ig/L) Table 12. Stormwater chemical data at grab sites, Naval Air Station, Dallas, Texas Continued GRAB-1 GRAB-2 GRAB-4 GRAB-5 Property or constituent 09/18/95 10/02/95 09/18/95 10/02/95 09/18/95 10/02/95 09/18/95 10/02/95 Volatile organic compounds Continued Isopropylbenzene (^ig/L) <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 n-Propylbenzene (p.g/L) <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2 l,3,5-Trimethylbenzene(mesitylene)(M.g/L) <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2 2-Chlorotoluene (|ig/L) <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2 4-Chlorotoluene (n.g/L) <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2 Bromochloromethane (n.g/L) <-2 <.2 <.2 <.2 <.2 <.2 <.2 <.2 n-Butylbenzene (|ig/L) <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2 sec-Butylbenzene (|ig/L) <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2 tert-Butylbenzene (|ig/L) <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2 p-Isopropyltoluene (|ig/L) <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2 l,l,l,2-Tetrachloroethane(M.g/L) <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2 l,2,3-Trichlorobenzene(|ig/L) <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2 l,2-Dibromomethane(|ig/L) <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2 l,l,2-Trichloro-l,2,2-trifluoroethane(M.g/L) .3 <.2 .3 <.2 <.2 <.2 <.2 <.2 Methyl tert-butylether (n.g/L) <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2 Bromobenzene (M-g/L) <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2 l,2-Dibromo-3-chloropropane(|ig/L) <1 <1 <1 <1 <1 <1 <1 <1 o-Chlorobenzene <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2 1,2,4-Trichlorobenzene <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2 1.3-Dichlorobenzene <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2 1.4-Dichlorobenzene <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2 Naphthalene <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2 Hexachlorobenzene <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2 Table 13. Number of trace element and volatile organic compound detections at grab sites, Naval Air Station, Dallas, Texas o Property or constituent GRAB-1 GRAB-2 GRAB-4 GRAB-5 Trace elements Arsenic, total 1 2 0 0 o Cadmium, total 2 2 2 1 Chromium, total 2 2 2 1 f Copper, total 2 2 2 2 I Lead, total 2 2 2 2 3) Mercury, total 0 0 0 1 c i Nickel, total 2 2 2 1 Zinc, total 2 2 2 2 (D Volatile organic compounds 01 Methylene chloride 1 1 1 1 !>5" 1 , 1 -Dichloroethane 0 1 0 0 CO Chloroform 0 2 0 0 o Dibromochloromethane 0 1 0 0 ai 1 ,1 ,2-Trichloro-l ,2,2-trifluoroethane 1 1 0 0 o I a 5*I 3o 5" Table 14. Stormwater toxicity data at fixed sites, Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas [Fathead minnow, 7-day growth and survival tests for Pimephales promelas; Water flea, 7-day reproduction and survival tests for Ceriodaphnia dubia; LOEC, lowest observable effects concentration (lowest test concentration in test series showing a significant difference with control); NOEC, no observable effects concentration (test concentration in test series showing no observed effects next test concentration in test series below LOEC); NS, no significant difference between control and test concentrations] Fathead minnow Water flea Growth test Survival test Reproduction test Survival test Storm date LOEC NOEC LOEC NOEC LOEC NOEC LOEC NOEC (percent) (percent) (percent) (percent) (percent) (percent) (percent) (percent) NAS-1 09/18/95 NS 100 NS 100 NS 100 NS 100 12/08/95 NS 100 NS 100 13 6 NS 100 NAS-2 11/02/94 NS 100 NS 100 NS 100 NS 100 09/18/95 50 25 NS 100 25 13 50 25 NAS-3 11/09/94 NS 100 NS 100 NS 100 NS 100 12/08/95 NS 100 NS 100 13 6 NS 100 NWIRP-1 11/09/94 NS 100 NS 100 NS 100 NS 100 09/18/95 100 50 NS 100 NS 100 NS 100 NWIRP-2 11/09/94 NS 100 NS 100 NS1 100 NS 100 09/18/95 NS 100 NS 100 NS 100 NS 100 1 A significant difference was measured at the 50-percent test concentration but was not supported by a no significant difference result at the 100-percent test concentration. jr (D Table 15. Median event-mean concentrations of selected constituents at fixed sites, Naval Air Station and Naval Weapons Industrial Reserve Plant, Dallas, Texas [NPDES, National Pollutant Discharge Elimination System; NURP, Nationwide Urban Runoff Program; mg/L, milligrams per liter; --, data not available to determine median event- mean concentration; [ig/L, micrograms per hter; <, less than] (DftET 3. g Dallas-Fort Worth NPDES NURP1 5"2. Constituent Fixed sites a3 Residential Commercial Industrial Highway Residential Commercial s Chemical oxygen demand, (mg/L) 32 70 56 67 59 73 57 Biochemical oxygen demand (mg/L) 4.6 7.3 6.6 7.5 6.5 10 9.3 5i Suspended solids (mg/L) 20 78 52 104 90 101 69 30 c 3 Dissolved solids (mg/L) 63 58 50 69 184 O Nitrite plus nitrate nitrogen, total (mg/L) .55 .58 .52 .63 .80 -- 3 5 Kjeldahl nitrogen, total (mg/L) .63 1.1 .80 .80 1.2 1.90 1.18 (D 0 Phosphorous, total (mg/L) <.05 .33 .14 .21 .21 .38 .20 § Phosphorous, dissolved (mg/L) <.05 .21 .06 .09 .11 .14 .08 g 5'r* Cadmium, total (Hg/L) 2<1 <1 <1 <1 <1 __ 3 0 Copper, total (ng/L) 29.0 8.0 8.0 12 10 33 29 Q. 0 Lead, total (jxg/L) 211 13 30 29 11 144 104 S Zinc, total (jxg/L) 61 60 80 130 60 135 226 1 1 Data from U.S. Environmental Protection Agency (1983). O 2 Data for last two storms analyzed with lower analytical detection limits than for the first four storms. w5" Q.c 0j 3D 9 2 (D TO 0 J*3 0*E w 3? X