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TEXAS ©EPARflMNT OF WATER RESOIJ&CES

CORPUS CHRISTI INNERHARBOR WATER QUALITY

SURVEY

August 1982

By

James W. Bowman

and

David A. Jensen

LP-197

Texas Department of Water Resources

January 1985

TEXAS DEPARTMENT OF WATER RESOURCES

Charles E. Nemir, Executive Director

TEXAS WATER DEVELOPMENT BOARD

Louis A. Beecherl Jr., Chairman George W. McCleskey, Vice ChairmanGlen E. Roney Lonnie A. "Bo" PilgrimW. O. Bankston Louie Welch

TEXAS WATER COMMISSION

Paul Hopkins, Chairman Lee B. M. Biggart. CommissionerRalph Roming, Commissioner

Authorization for use or reproduction of any original material contained in thispublication, i.e.. not obtainedfrom othersources, is freelygranted. The Department wouldappreciate acknowledgement.

Published and distributed

by theTexas Department of Water Resources

Post Office Box 13087

Austin, Texas 78711

ABSTRACT

A water quality survey of the Corpus Christi Inner Harbor (Segment 2484)

was conducted August 8-14, 1982 by the staff of the District 12 office

of the Texas Department of Water Resources. The Corpus Christi Inner

Harbor is a dredged, man-made, dead-end channel, approximately 8.6 miles

in length. Water and sediment quality data were collected at 15 loca

tions during this survey. Benthic macroinvertebrate data were collected

at 6 of the 15 survey locations. Water quality data were also collected

from all known and permitted discharges to the Corpus Christi Inner

Harbor. Data from previous Texas Department of Water Resources studies

of the Inner Harbor were compared to data collected during this survey.

Water quality has improved in the Inner Harbor over the past 10 years.

Sediments in the Inner Harbor, however, are still contaminated with heavy

metals, organics and PCBs.

m

TABLE OF CONTENTS

PAGE

ABSTRACT iii

INTRODUCTION 1

METHODS 2

DESCRIPTION OF SURVEY AREA 3

WASTE SOURCES IN THE SURVEY AREA

Point Sources 3

Non-Point Sources 4

RESULTS

Hydrological 5

Climatological 5

Field Measurements 5

Laboratory Analyses of Water

Chemical Analyses 7

Metals in Water «• . 8

Pesticides in Water (Station 8 only) 9

Bacteriological 10

Laboratory Analyses of Sediments

General 10

Heavy Metals, T-P, Volatile Solids, and Oil

and Grease 11

Pesticides in Sediment (Station 8 only) 12

Biological Analyses

Benthos 13

Review of Monitoring Data 14

CONCLUSIONS AND RECOMMENDATIONS 15

TABLES AND FIGURES 16

APPENDIX (HISTORICAL DATA) 66

TABLE OF CONTENTS - CONTINUED

TABLES

Page

1. Discharges to Corpus Christi Inner Harbor (August 10, 1982) .... 17

1A. Discharges to Corpus Christi Inner Harbor (August 20, 1983) .... 19

2. Drainage Ditches' Water Quality . 22

3. Local Climatological Data 23

4. Physical and Chemical Field Measurements 27

5. Chemical Analyses of Water 29

6. Metals in Water 30

7. Summary of Metals in Water (from SR-4) . 31

8. Pesticides in Water 32

9. Bacteriological Data 33

10. Interpretation of Fecal Colifonn/Fecal Streptococcus Ratios .... 34

11. Chemical Analysis of Sediment 35

12. Pesticide in Sediment Lab Data (Station 8 only) 36

13. Benthic Macroinvertebrate Data 37

Figures

1. Survey Station Locations 38

2. Location of Wastewater Discharges 39

3. Municipal and Industrial Discharges 40

4. Non-Point Sources - Location of Drainage Ditches 41

5. Dissolved Oxygen - August, 1982 42



8. Dissolved Oxygen - August 20, 1973 45

9. Total Phosphorus - August, 1982 46

10. Orthophosphate - August 20, 1973 47

11. Dredging in Corpus Christi Inner Harbor, 1960-1981 48

vi

TABLE OF CONTENTS - Continued

FIGURES

Page

12. Cadmium in Sediment (1973 data vs 1982 data) 49

13. Mercury in Sediment (1973 data vs 1982 data) 50

14. Zinc in Sediment (1973 data vs 1982 data) 51

15. Arsenic in Sediment (August 8-14, 1982) 52

16. Barium in Sediment (August 8-14, 1982) 53

17. Cadmium in Sediment (August 8-14, 1982) 54

18. Copper in Sediment (August 8-14, 1982) 55

19. Chromium in Sediment (August 8-14, 1982) 56

20. Lead in Sediment (August 8-14, 1982) 57

21. Mercury in Sediment (August 8-14, 1982) 58

22. Manganese in Sediment (August 8-14, 1982) 59

23. Nickel in Sediment (August 8-14, 1982) 60

24. Silver in Sediment (August 8-14, 1982) 61

25. Zinc in Sediment (August 8-14, 1982) 62

26. T-Phosphorus in Sediment (August 8-14, 1982) 63

27. Volatile Solids in Sediment (August 8-14, 1982) 64

28. Oil and Grease in Sediment (August 8-14, 1982) 65

vn

Corpus Christi Inner Harbor Study

(Segment 2484)

August 8-14, 1982

INTRODUCTION

During the week of August 8-14, 1982 a special study of the Corpus Christi InnerHarbor was conducted by the staff of the Texas Department of Water Resources(TDWR) District 12 Office. The study was conducted as part of continuing surveillance of the Corpus Christi Inner Harbor, Segment 2484. Data collected willprovide information for the Department's continuing effort to maintain and enhance the quality of Texas' surface water.

The actual on-water work was conducted August 10, 1982. We utilized fifteensurvey stations for this project. Fourteen of these stations were located inthe Inner Harbor. A reference station at Corpus Christi Ship Channel Marker 62(2481.01) was used to obtain some background information on Corpus Christi Bay.A map depicting survey station locations is attached as Figure 1. These are thesame fifteen stations used by District 12 in previous studies.

The Corpus Christi Inner Harbor has been the subject of several previous studiesby the Department. A list of these studies follows:

1) IOM, April 11, 1969 to Joe Sorrels from Paul Kutchinski, Survey ofCorpus Christi Ship Channel, February 5, 1969.

2) IOM, June 9, 1969 to Joe Sorrels from Paul Kutchinski, Corpus ChristiShip Channel Survey.

3) IOM, July 20, 1970 to Dick Whittington from Paul Kutchinski, CorpusChristi Ship Channel Survey.

4) IOM, February 8, 1971 to Dick Whittington from Paul Kutchinski,Corpus Christi Ship Channel Survey, October 27, 1970.

5) IOM, January 27, 1972 to Dick Whittington from Jim Bowman, CorpusChristi Ship Channel Survey, September 22, 1971.

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6) IOM, March 5, 1974 to John Latchford from Paul Kutchinski, CorpusChristi Inner Harbor Survey (2484).

7) Water Quality Segment Report for Segment 2484, Corpus Christi InnerHarbor WQS-10 by Steve Warshaw, March 1975.

8) IOM, June 8, 1976 to John Latchford from Paul Kutchinski, SpecialStudy, Corpus Christi Inner Harbor (2484).

The TDWR currently maintains surveillance of water and sediment quality conditionsin the Inner Harbor at four locations. These four locations are part of the Statewide Monitoring Network and are described as follows:

SurveyStationNumber S.M.S.No.

2 2481.05

6 2484.01

8 2484.02

15 2484.03

Description

Corpus Christi Bay at Channel Marker 86

Corpus Christi Inner Harbor at Avery Turning Basin

Corpus Christi Inner Harbor at Navigation Boulevard Bridge

Corpus Christi Inner Harbor at Viola Turning Basin

Data are collected quarterly at these monitoring stations and are available atthe District 12 Office or the Department's Central Office in Austin, Texas.

METHODS

Samples for pesticides-in-water and sediment were analyzed by the TexasDepartment of Health (TDH) Lab in Austin, Texas. All other laboratory analysesfor water chemical data, metals, sediment and bacteriological data were conductedby the Corpus Christi-Nueces County Health Department Lab in Corpus Christi, Texas.

The TDWR's 23-foot boat was used for on-water work. Water samples were collectedat each survey station near mid-channel. Water chemistry and metals samples werecollected at a depth of 38 feet at each station using a Kemmerer Sampler. Samplesfor chemical and metals analyses were collected at a depth of 1 foot by submergingthe sample containers.

Sediment samples were collected with an Ekman Dredge. At each station a cross-section across the channel was made to collect the four sediment subsamples whichwere then composited. Benthic biological samples were collected as four grabsamples and sieved through a 30-mesh sieve bucket. The resulting material wasthen narcotized and preserved^ Benthic biological samples were examined, organismspresent were identified, and d analyses were requested.

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Field data profiles for temperature, pH, dissolved oxygen and conductivity werecollected at each of the fifteen survey stations. Profiles were made early inthe morning, midday, and near sunset. We used a Hydrolab 4000 Series for thecollection of the field data. The unit was calibrated prior to the survey.

Bacteriological samples were collected at the fifteen survey stations in sterilebottles. These were carefully submerged to prevent contamination during samplingand were delivered to the lab within six hours after collection.

DESCRIPTION OF SURVEY AREA

The Corpus Christi Inner Harbor, Segment 2484 is located in the City of CorpusChristi, Nueces County, Texas. The Inner Harbor is also known as the Port ofCorpus Christi, although that is only partially correct, and is operated by thePort of Corpus Christi Authority. The Inner Harbor is a dredged, man-madechannel, approximately 8.6 miles in length from the U.S. 181 Harbor Bridge toits dead-end in Viola Turning Basin (Figure 1). No major rivers or creeks discharge into the Inner Harbor, but storm water runoff from the City of Corpus Christiand adjacent industries does enter the Harbor. Municipal and industrial wastewatersare discharged to the Harbor.

Segment 2484, Corpus Christi Inner Harbor is currently ranked 116, and is classified effluent limited in the TDWR 1982 Water Quality Inventory. In 1980, Segment2484 was ranked 211 and was classified effluent limiting. The segment moved inranking based upon several dissolved oxygen values above saturation in the pastfour years of data.

The Corpus Christi Ship Channel extends from the mouth of the Inner Harber tothe Gulf of Mexico. The channel crosses Corpus Christi Bay, a primary bay systemof the Nueces Estuary. In 1982, the Corpus Christi Inner Harbor was restored to adepth of 40 feet by maintenance dredging. The Corpus Christi Ship Channel is atits authorized depth of 45 feet from the Gulf to the Inner Harbor. Plans to deepenthe Inner Harbor to 45 feet have been delayed due to environmental concerns overthe disposal of the dredge material.

WASTE SOURCES IN THE SURVEY AREA

Point Sources - We sampled all permitted wastewater discharges to the CorpusChristi Inner Harbor. A total of nine industries and the City of Corpus ChristiBroadway sewage treatment plant (STP) (WC0 #10401-05) discharge wastewater tothe Inner Harbor. The location of each of the wastewater discharges is shownin Figures 2 and 3. Results of the sampling are shown in Table 1, attached,which includes the laboratory analyses, volume of each discharge, effluent limitation (where applicable) and calculations of loadings from each discharge.

We compared data from Table 1 to data from Table 1A(TDWR Survey of the Corpus Christi Inner Harbor of August 20, 1973). During the

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August 1973 survey, all wastewater discharges were sampled and loadings calculated. The 1973 survey included a total of 3414.36 lbs/day B0D5 loading whileB0D5 loading in the 1982 survey was 1896.1 lbs/day. This is a reduction ofapproximately fifty-six percent.

The City of Corpus Christi's Broadway STP contributed the largest percentage ofthe total B0D5, COD and NOD loading to the Inner Harbor. The STP effluent alsocontributed tne largest amount of nutrients (ammonia, nitrates and phosphorus) tothe Harbor. The Broadway STP contributed 63.6% of the B0D5 loading (Table 1).A comparison to August 1973 data indicates Broadway STP was contributing 61.2%of the BODc loading to the Inner Harbor in 1973. It is interesting to note thatalthough tne total B0D5 loading was 56% less in the 1982 survey, the percentageof loading has varied Tittle over the past nine years.

We determined COD loading for the Inner Harbor to be 14,260 lbs/day. This compares well with the 1973 survey in which 13,094 lbs/day was calculated.

The total oxygen demand loading (B0D5 + COD + NOD = total oxyqen demand)calculated was approximately 20,375 Tbs/day. During the August 20, 1973 survey,this value was about 21,621 lbs/day. This is a reduction of about six percentover the past nine years.

As will be discussed in the field data section of this report, the dissolvedoxygen concentrations determined during the survey were good throughout thewater column. The August 1973 survey showed wery low dissolved oxygen valuesin the Harbor below depths of 20 feet, especially at Stations 8-through 15.

Non-point Sources - The Corpus Christi Inner Harbor receives rainfall runofffrom surrounding industries and the City of Corpus Christi. Prior to our collection of on-water samples on August 10, 1982, approximately 0.6 inches of rain fellin the survey area (see climatological data). This rainfall created flow in fourdrainage ditches to the Inner Harbor. On August 9, 1982, we inspected all ditchesdraining to the Inner Harbor and sampled those four discharging to the Inner Harbor,The location of each drainage ditch sample site is shown in Figures 1 and 4. Theresults of lab analyses are shown in Table 2,

Figure 4 can be used to compare the locationof the ditches to other figures in this report. Lab analyses indicate typicalquality for storm water runoff. The TSS concentrations were hiqh, ranging from125 to 606 mg/1. The COD values ranged from 69 to 189 mg/1. The lab reportedinterference with the B0D5 analyses, therefore no BODc data is available for thesedischarges. The runoff water also contained moderate amounts of nutrients (seeTable 2).

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RESULTS

Hydro!ogical - The hydrology of the Inner Harbor is influenced by many factorsincluding, but not limited to, channel configuration, depth and width, tides,wind, withdrawal of water, ship traffic, municipal and industrial discharges andrainfall runoff. To better understand the influence of these factors on thecirculation and water exchange patterns of the Inner Harbor, an extensive monitoring effort is needed to define circulation patterns in the Inner Harbor.No hydrological measurements were made during this study. The generalregime is outlined below:

The tidal fluctuations in the Inner Harbor are relatively small. Under typicalconditions, diurnal tidal fluctuation is 6 to 8 inches, with strong winds itcould be more or less depending upon wind direction. Rainfall runoff influencescirculation and flushing of the Inner Harbor waters. These two factors play amajor role in the hydrology of the Harbor. Progressing west from the HarborBridge, tidal exchange between the Inner Harbor and the Corpus Christi Bay Systemis reduced.

As shown in the field data section of this report, conductivity values indicate\/ery little salinity stratification was found during this survey between top andbottom waters and from one station location to the next.

CIimato!ogical - The climatological data (see Table 3) for the survey was provided by the National Weather Service Office at the Corpus Christi InternationalAirport, located about three miles south of the Inner Harbor (see map, Figure 1).

Two days prior to the actual on-water work, rainfall was recorded in the surveyarea. On August 8, 1982, the Weather Bureau recorded .52 inches of precipitationand on August 9, 1982, 0.11 inches occurred.

On August 10, 1982. we considered the weather excellent. The average temperaturefor the day was 84 F, which compared favorably with the average temperature forthe month--84.9 F. The maximum temperature for the day was 92 F and the low was76 F. Winds were out of the southeast at 10.3 mph. Highest winds were recordedat 17 mph. (Average wind velocity for the month of August was 12.2 mph out ofthe southeast.)

Field Measurements - On August 10, 1982, field measurements consisted of verticalprofiles at each station three times during the day. The fifteen stations werevisited for collection of field data as close as possible to the early morning,midday and sunset hours. This was done to determine daily fluctuations of temperature ( C), pH, conductivity and dissolved oxygen. Vertical profiles included dataat the surface (1 foot) and then at 10-feet intervals to 40 feet. All field datacollected on August 10, 1982 are presented in Table 4.

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Temperature of the water increased with time of day. Temperatures increasedabout 1 C from the early morning to sunset. Temperatures were lowest in themorning at Station 1 in Corpus Christi Bay and Station 2 at the mouth of theInner Harbor. The Bay's larger surface area apparently accounts for thesecooler temperatures.

A review of temperature data at all stations shows very little thermal stratification during the survey. In general, less than 0.5 C difference occurred betweenthe surface water and bottom water (at 40 feet) for the stations in the InnerHarbor during the morning and midday sampling periods. Evening temperaturesshowed a slightly greater (about 1 C) difference between the warmer surface waterand the bottom water. Also, the temperatures of the bottom water changed lessthan at other depths during the three sampling periods.

The pH of the water in the Inner Harbor was slightly lower than normal. Therainfall two days prior to data collection probably influenced the pH valuesdetected. Generally, pH values in the Inner Harbor waters range from 8.0 to 8.4during the summer months. This is supported by the field pH measurements collectedduring the 1973 survey and TDWR routine monitoring data. The actual pH range forthe survey was from 7.6 to 8.0. The pH of the Inner Harbor waters increasedslightly with time of day and decreased with depth. The amount of dissolvedoxygen in the water may have influenced these changes. The pH standard for Segment 2484 is 6.5 to 9.0. No water quality standard violations for pH were detected.

Conductivity values were uniform throughout the survey area. A slight increasein conductivity occurred substantially with depth.

The dissolved oxygen standard for the Corpus Christi Inner Harbor is 3.0 mg/1in surface water (1 foot). Actual dissolved oxygen values in surface water rangedfrom a low of 3.8 mg/1 at Station 4 at 1328 hours to 8.5 mg/1 at Station 2 at1905 hours. No water quality standard violations for dissolved oxygen were recorded,

Dissolved oxygen values for surface water at 20 feet and at 40 feet are shownon Figures 5, 6 and 7. Figure 5 depicts values found in the morning on August10, while Figure 6 shows dissolved oxygen values at midday and Figure7 has valuesrecorded near sunset. These charts indicate that dissolved oxygen concentrationswere uniform throughout the survey area. The stations which showed the largestdifference between the morning sampling run and the sunset sampling run wereStations 2-5. The effluent from the Broadway STP is contributing to this fluctuation. The dissolved oxygen values in Figures 5, 6 and 7 may be compared to dissolved oxygen values found during the August 20, 1973 survey of the Harbor. Figure8 depicts the dissolved oxygen values from the 1973 survey. Station locations arethe same for both surveys. In 1973, the dissolved oxygen values were much higherin the surface water. In fact, all surface water samples were above saturationin 1973. Also, the water at depths of 20-30 feet was almost devoid of oxygenthen, especially at Stations 8-15. This condition did not exist during theAugust 1982 survey indicating improved water quality in the Corpus Christi InnerHarbor, Segment 2484.

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Laboratory Analyses of Water -

Chemical Analyses

Water samples were collected for chemical analyses at each of the 15 surveystations at the surface (1 foot) and at a depth of 38 feet. All samples werecollected approximately mid-channel. The results of the laboratory analyses areshown in Table 5 and indicate uniformly good water quality for a dead-endindustrial channel.

The levels of total organic carbon (TOC) in the water ranged from <5 mg/1 to6 mg/1. These values compare favorably with the surface water BODc analyses whichwere 2 mg/1 at all stations except Station 10 which had 3 mg/1. These values arenormal for estuarine systems in District 12. A computer review of TOC valuesfound at TDWR routine monitoring stations in the Corpus Christi Inner Harbor isattached as the Appendix. The data indicate that the average TOC value found in theInner Harbor over the past years of sampling is higher than values found duringthis survey. The computer review of TOC data also shows that the TOC averageincreases from Monitoring Station 2481.05 at the mouth of the Inner Harbor (7.9mg/1 actual) to the dead-end turning basin, Viola Turning Basin, Station 2484.03(12.3 mg/1 actual).

The amount of total suspended solids (TSS) and volatile suspended solids (VSS)in the bottom water at Station 3 was unusually high compared to other surveylocations. High VSS concentration (250 mg/1) does not seem to correlate withTOC concentration (5 mg/1) at this location.

Conductivity values determined by the laboratory are slightly lower than conductivity values recorded in the field. The lab data support the field data in thatonly a slight increase in values are found between samples collected near thesurface as compared to values found at 38 feet. The conductivity values foundthroughout the survey area were quite uniform.

Chloride and sulfate data shown in Table 5 indicate a slight increase in valuesfrom surface water to bottom water. Past TDWR sampling at routine monitoringstations in the Inner Harbor has shown larger variation between conductivity,chloride, and sulfate values between the surface and bottom waters. Rainfalland storm water runoff are tv/o of the controlling factors.

All laboratory pH analyses of the water samples collected for chemical analyseswere within the water quality standards for Segment 2484 (6.5 to 9.0). Thelaboratory pH data shows that the surface water was slightly higher in pH thanbottom water. This is attributed to the additional amount of dissolved oxygen inthe surface water. The surface water pH values found during the August 1982 surveywere slightly lower than those determined by the lab during the August 1973 survey.The bottom water lab pH data was slightly higher when the two surveys are compared.The laboratory pH values found during the 1982 survey indicate improved water quality.

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Values of nutrients (phosphorus (T-P), ammonia, nitrates and nitrites) foundat all survey stations were low. Data for T-P in surface water are graphed inFigure 9. The impact of the loading from the Broadway STP is seen in the peakat Station 3. The data in Figure 9 can be compared to the August 1973 surveyin Figure 10, attached. The values of phosphorus were much lower in the August1982 survey. These data again indicate improved water quality.

Concentrations of ammonia (NH3-N) and nitrate nitrogen (NOj-N) in both top andbottom water were fairly low. Concentrations of nitrite nitrogen (N0«-N) werebelow laboratory detection limits (<0.03 mg/1) at all stations.

Chlorophyll-a concentrations were slightly higher at Stations 8-15, near theback of the Inner Harbor. Previous studies have also found these conditions.Pheophytin-a values were less than .005 mg/1 at all stations.

Metals in Water

Samples for heavy metals in water were collected at each of the fifteen surveystations at 1 foot and 38 feet. Laboratory data are tabulated in Table 6.For comparison, values from stream monitoring stations throughout the Stateare summarized in Table 7.

Values of arsenic ranged from 12 ug/1 at Station 8 (surface water) to less than2 ug/1 at Stations 1 and 13 (bottom water). Although arsenic was present in thewater at most survey station locations, the values detected are not excessive.The USEPA Quality Criteria for Water recommends a maximum of 50 ug/1 of arsenicfor the protection of drinking water. The same limit is recommended for protection of marine aquatic life by the Canadian Environmental Studies Board (seeTable 6).

Barium values found in the water were low. All values were below the USEPA andCanadian Environmental Studies Board criteria of 1,000 ug/1 for protection ofdrinking water and marine aquatic life, respectively.

Cadmium concentrations in the Corpus Christi Inner Harbor waters were all belowlab detection limits.

Copper is very toxic to fish, especially in fresh or soft water. The concentration of copper, the existing water quality conditions, and the type of fish oraquatic organism involved plays a role in determining what level of copper inwater is acceptable. Concentrations of copper were below laboratory detectionlimits at Stations 11-15 (surface water). All other stations had detectable amountsof copper. Although detectable amounts were found at these station locations,the amounts detected were below levels that would be expected to harm marine life.

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Chromium was detected at 48 ug/1 in the surface water at Station 1. Lab analysesat all other locations indicate chromium levels below detection limits (20 ug/1).The source of the chromium at Station 1 is unknown.

We expected heavy metals concentration in the water at Station 1 (Corpus ChristiBay) would be lower than those stations in the Corpus Christi Inner Harbor; however, water at Station 1 had the highest concentrations of chromium, iron, manganeseand zinc.

Values of iron in the bottom water were much higher at Stations 1-5 as comparedto Stations 6-15. The 2200 ug/1 value found at Station 1 is considered excessive.Further TDWR monitoring and sampling for iron in the bottom water at this locationis planned.

Values of lead at survey stations in the Inner Harbor were at or below levelsfound at reference Station 1 in Corpus Christi Bay.

Manganese is naturally found in sea water. The USEPA and Canadian EnvironmentalStudies Board limit of 100 ug/1 is used to protect marine aquatic life and consumers of marine mollusks. All concentrations determined during this survey werebelow this level.

Mercury in the water was detected in the bottom water at Stations 2 and 10. Atall other stations, the lab reported mercury below the detection limit of <1 ug/1.It should be noted that although the lab found 1 ug/1 of mercury present, this wastheir reported detection limit, therefore no comparison was made, with the USEPAcriteria for protection of marine life (0.10 ug/1).

The August 1973 study of the Corpus Christi Inner Harbor also detected mercuryin the water. In this study, a much lower detection limit was used and comparisonscould be made of mercury limits from station to station. The 1973 study foundmercury to peak in the surface water at Stations 3 and 6.

Concentrations of nickel and silver were below laboratory detection limits of30 ug/1 and 10 ug/1 respectively, at all survey station locations.

Zinc concentrations at Station 1 were unusually high. The lab reported 720 ug/1of zinc in the surface water and 330 ug/1 in the bottom water. These values aremuch higher than those found in the Inner Harbor. The USPHS recommends a maximumof 5000 ug/1 zinc in drinking water. However, Canada's Environmental StudiesBoard recommends a limit of 100 ug/1 for protection of marine aquatic life. Duringthe August 1973 survey, values for zinc in the water were 100 ug/1 or less at allstations. This data compares with values found during this survey at Stations 2-15.

Pesticides in Water

Pesticide analyses of water samples collected at Navigation Bridge (Station 8)are shown in Table 8. No pesticides or polychloririated biphenyls (PCB's)were detected in the water.

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Review of routine monitoring data indicates no pesticide contamination in thewater at the Navigation Bridge monitoring station (2482.02). Pesticide concentrations in water have been below detection limits from 1977 to present.

Bacteriological

A summary of analyses for total and fecal coliforms, fecal streptococcus, and afecal coliform/fecal streptococcus ratio is included in Table 9.

Segment 2484 is classified by the TDWR as water suitable for non-contact recreation, requiring a total coliform concentration of less than 1000 organisms per100 ml of water (logarithmic mean of at least 5 samples collected within a 30-dayperiod). Since the data we collected are based on one grab sample, direct comparisonwith TDWR standards cannot be made.

Bacteriological data indicate poor bacteriological conditions at Stations 3, 4, 5,6 and 9 (see Table 9). Total coliform concentrations at these five stations rangedbetween 2200/100 ml and greater than 10,000/100 ml. Station 3 was located mid-channeldirectly opposite Broadway STP discharge. We observed a wind driven slick emanatingfrom the discharge pipe and drainage ditch (DS-1) extending westerly approximately2500 feet. Total coliform concentrations were high within this slick (at Stations4 and 5) and began to decrease at Station 6 (Avery Turning Basin). These high totalcoliform counts are apparently indicative of incomplete disinfection practices atBroadway STP and storm water runoff being discharged.

High total coliform concentrations at Station 9 are most probably the result ofstorm water runoff entering the Harbor via drainage ditch DS-4 (see Non-point Sourcesection for map showing location). A 0.6 inch rainfall was recorded in the twodays prior to the survey.

Fecal coliform to fecal streptococcus (FC/FS) ratios are used to identify thesource of bacteriological contamination. Current interpretive use of this ratiois depicted in Table 10. Based on this methodology, domestic wastes were indicatedat Stations 3, 4, 5, 6 and 9. FC/FS ratios verify the bacteriological contaminationsource in the Harbor as the Broadway STP. Animal wastes were present at Station12 and combined domestic and animal wastes were present at all other stations.

Laboratory Analyses of Sediments -

General

The quality of the sediments in the bottom of the Corpus Christi Inner Harbor havebeen the subject of continuing concern. The Corpus Christi Inner Harbor, as withall man-made, dead-end channels, requires periodic maintenance dredging to keep theHarbor at its authorized depth. Figure n shows the schedule of maintenance dredging and virgin cuts in the Corpus Christi Inner Harbor since 1960. The disposal of

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these sediments from maintenance dredging and deepening of the Harbor with virgincuts continues to be an issue for environmental concern. The Harbor has verylimited circulation and therefore any contamination from discharges, spills, rainfall runoff, or other sources are concentrated in the sediments. The sediments inthe Corpus Christi Inner Harbor represent a history of past discharges made to theHarbor.

In 1982 prior to this study (see Figure 11), maintenance dredging was completedof the entire length of the Inner Harbor. This dredged material was disposed of ina manner which did not allow contaminated sediments to be discharged into Nueces Bayor other open waters. Decant-water from the dredge material disposal sites wentback to the Harbor. After this maintenance and over-dredging to restore the InnerHarbor to a depth of 40 feet was completed, we expected the sediment quality wouldbe typical of uncontaminated clay. As shown in Figures 129 13 and 14 for cadmium,mercury and zinc, this was not the case. The data indicate that the sediments inthe bottom of the Inner Harbor are still contaminated with heavy metals, organicsand PCBs. In any future dredging, these contaminated sediments must be disposedof in a manner that will not cause the water and sediment quality degradation ofany surrounding bay systems.

Heavy Metals, T-P, Volatile Solids and Oil and Grease

Composited samples of sediment were collected at each survey station. Laboratoryresults are shown in Table 11.

Figures 15-28 depict sediment quality found during the survey for each of theparameters shown in Table 1).. Figures 3 and 4 show the location of the wastewaterand storm water discharges into the Corpus Christi Inner Harbor during the surveyof August 8-14, 1982. These charts can be overlaid on the parameter charts todepict wastewater sources in the survey area.

After we reviewed the sediment data, several common peaks in the various parametervalues were found. These peaks occurred between Stations 3-4, 8-9 and 13-14. Thepeaks were usually the greatest at Stations 8-9.

Arsenic in the sediment was the highest at Stations 8 and 9. The lab reportedvalues of 3.5 and 4.5 mg/kg, respectively. The USEPA dredge disposal screeningcriteria for arsenic is 5.0 mg/kg.

Cadmium values as shown in Figure 17 exceeded the USEPA screening levels for openwater disposal of dredge spoil from Stations 4-15. The highest cadmium level wasat Station 8 (17 mg/kg of cadmium).

Lead in the sediment exceeded the USEPA level at Stations 6-10. Themaximum amount detected was at Station 9 (170 mg/kg lead).

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Mercury concentrations detected during the August 1982 survey were considerablylower than those detected during the August 1973 study (Figure 13). Maintenancedredging of the Inner Harbor in 1981-1982 (prior to the study) may have removedmost of the mercury-contaminated sediment. No known source has contributedmercury to the Inner Harbor since the dredging. The USEPA screening level of1.0 mg/kg was exceeded only at Station 8. The lab detected 1.1 mg/kg of mercuryin the sediment.

Zinc concentrations found in the sediment of the Corpus Christi Inner Harbor areexceptionally high. The USEPA screening level for zinc is 75 mg/kg. Station 9 hadzinc concentrations of 2100 mg/kg in the sediment. The source of the zinc apparentlyis the wastewater discharge of ASARCO, Inc. opposite Station 9. Zinc concentrationsin the sediment have not changed much between the August 1982 and August 1973 surveysData is compared in Figure 15. Highest zinc values for both surveys were at Station9.

The T-P concentration in sediment was highest near the discharge of the City ofCorpus Christi Broadway STP at Station 3. The Broadway STP was discharging 340pounds of T-P per day, as compared to 373 total pounds of T-P in all other permitted discharges.

Oil and grease concentration in the sediment is depicted in Figure 29. The peaksin the data at Stations 5 and 8 correlate well with drainage ditch data (see Figure5, Non-point Sources overlay). Urban and industrial storm water runoff are majorsources of oil and grease in the sediment other than oil spills.

Pesticide in Sediment

Pesticide analyses of sediment samples collected at Navigation Bridge (Station 8)are shown in Table 12. No pesticideswere detected in the sediment. Review of routine monitoring data indicate nopesticide contamination in the sediments at this location during the last fouryears.

Polychlorinated biphenyls (PCBs) were detected in the sediment sample at Station8 at a concentration of 83 ug/kg (detection limit is 30 ug/kg).

PCBs are relatively non-biodegradable and are fat-soluble, thus they tend toaccumulate in fatty tissues of organisms. Review of routine monitoring dataindicate persistent PCB contamination of Inner Harbor sediments at Station 8.We have detected PCBs in e\iery sediment sample collected at this location overthe past six years. PCB concentrations have ranged between 43 ug/kg and 417 ug/kg.

Possible sources of PCBs in the Corpus Christi Inner Harbor include, but arenot limited to :

1) Release of domestic and industrial wastewater;

- 12 -

2) Spills;

3) Improper disposal of solid wastes containing transformers, capacitors,hydraulic fluids, etc.

In 1970, the USEPA eliminated all uses of active or inactive ingredients of PCBsas a pesticide. PCBs are now used principally in transformers.

Recent maintenance dredging (1980-1981) of the entire reach of the Corpus ChristiInner Harbor was expected to reduce concentrations of contaminants (i.e., heavymetals, pesticides, PCBs, etc.) in the sediments. The heavy metals-in-sedimentdata discussed earlier in this report and PCB data indicate this reduction of pollutants has not occurred.

Biological Analyses -

Benthos

We collected benthic macroinvertebrate data at six of the survey stations (seeTable 13). A total of eighteen species were identified, representing four phylaof the animal kingdom. Eight species of polychaete annelids and five species ofmoll usks were identified, as well as two nemertean worms and three arthropodcrustaceans.

The majority of these species (13) were collected at the Corpus Christi BayStation at Corpus Christi Ship Channel Marker 62 (2481.01). Number of speciesthen drops progressing into the Corpus Christi Inner Harbor. Only four specieswere collected within the confines of the Corpus Christi Inner Harbor. Thiscondition correlates well with past benthic macroinvertebrate data collected inthe bay and harbor.

Benthic macroinvertebrate diversity at the Corpus Christi Bay Ship ChannelMarker 62 monitoring station is consistently good, with the exception of samplescollected after maintenance dredging (see SMN data files). Benthic macroinvertebrate diversity in the Corpus Christi Inner Harbor however has been consistentlypoor (see SMN data files). Over the past six years, we have monitored benthicmacroinvertebrate populations at the Corpus Christi Inner Harbor Navigation liftbridge (2484.02). Samples collected in 1976, 1977 and 1978 yielded no benthicmacroinvertebrates. Samples collected in 1979 and 1980 contained two species ofpolychaete annelids, Streblospio henedioti and Capitella oapitata and one bivalvemollusk, Mulinia lateralis. No benthos data were collected in 1981 at thissampling station. In 1982, as can be seen in Table 13, no benthic macroinvertebrateorganisms were collected at the Navigation bridge sampling station, but fourspecies were collected at two other Corpus Christi Inner Harbor sampling points.These were the polychaetes Streblospio benedioti and Paraprionospio pinnata, andthe bivalves Mulinia lateralis and Chione sp. These four organisms are quitecommon to the Corpus Christi Bay system, in fact Paraprionospio pinnata and

- 13 -

Mulinia lateralis are probably the two most common organisms collected inseveral of the bay systems along this portion of the Texas coast. Streblospiobenedioti on the other hand is quite common to ecotonal areas where fresh andsalt waters merge. It is also abundant in estuarine areas with organic loading(i.e., sewage treatment plant outfalls and storm drains, etc.).

The paucity of benthic biota in the Corpus Christi Inner Harbor reflects theconditions existing there. These include, but are not limited to, limited watercirculation, periodic maintenance and dredging operations, ship traffic, organicdecomposition, low dissolved oxygen concentrations and channel depth. Heavy metalsconcentrations in the sediments also may act to curtail establishment of manybenthic species.

Review of Monitoring Data - We requested a selective data computer report ofroutine TDWR monitoring data for Station 2 (2481.05), Station 6 (2484.01),Station 8 (2484.02), and Station 15 (2484.03) (see the Appendix). We requested datawhich included those parameters used to determine compliance with existing waterquality standards for Segment 2484, Corpus Christi Inner Harbor.

Survey Station 2, CMS #2481.05, water quality standards are those for CorpusChristi Bay (Segment 2484). Corpus Christi Bay has a dissolved oxygen standardof not less than 5.0 mg/1. A review of the data for this station (in the Appendix)indicated no violations for dissolved oxygen at depths of 1 foot. The dissolvedoxygen falls below the standard only at depths below 10 feet, however, these arenot considered water quality standard violations.

The Corpus Christi Inner Harbor has a dissolved oxygen standard of not less than3.0 mg/1 for surface water. A review of data provided in the selective dataretrieval for dissolved oxygen shows that only one dissolved oxygen violationhas occurred. This dissolved oxygen violation occurred on August 1, 1974 atStation 2484.03 (Survey Station 15). Since that time we have not been aware ofany dissolved oxygen violation of surface water standards at any of the routinemonitoring stations or special studies stations.

The dissolved oxygen data indicate a trend of lower dissolved oxygen valuespresent in the bottom waters. Although this condition was found during the survey of August 8-14, 1982, the magnitude of the dissolved oxygen decline is notas great as in the past. Review of dissolved oxygen data also indicate somewery high dissolved oxygen values for surface water. There is no standard formaximum dissolved oxygen, but values in excess of 100% saturation are not consideredgood.

Dissolved oxygen saturation will vary with temperature and salinity of the water.Generally, values above 10 mg/1 are in excess of 100% saturation for the watersin the Inner Harbor. Our data indicate values as high as 16.9 mg/1 have beenfound in the Inner Harbor. Data show that the average dissolved oxygen for thestations in the selective data report ranged from 6.5 mg/1 to 6.9 mg/1. This

- 14 -

average for dissolved oxygen indicated good water quality. The Inner Harbor(Port of Corpus Christi) has been called one of the cleanest ports in the world.This dissolved oxygen average for an industrial, man-made, dead-end channelhelps support that statement.

All values for pH at Stations 2, 6, 8 and 15 at all depths are within waterquality standards of 6.5 to 9.0 for Segment 2481 and 2484.

A review of temperature data for Stations 2, 6, 8 and 15 does not show anytemperature violations for water quality standards. The water quality standardfor temperature is 95 F (35 C) for Segments 2484 and 2481.

Data for total coliforms (TOC), total phosphorus, ammonia nitrogen and nitratenitrogen are also contained in the selective data retrieval. These numbers wereused to compare with data collected during this survey.

CONCLUSIONS AND RECOMMENDATION

Water quality in the Corpus Christi Inner Harbor, Segment 2484, has improvedsince the study of August 10, 1973 was conducted. The improved water qualityis attributed to reduced loading to the Inner Harbor from wastewater sourcesand removal of some contaminated sediments in the bottom of the harbor. Sediments in the Inner Harbor are still contaminated with heavy metals, organicsand PCBs. Due to the contaminated nature of the sediments in the Inner Harbor,District 12 recommends that during future dredging of the Inner Harbor the TDWRrequire that dredged material be contained in leveed settling la'goons, withdecantation back to the Inner Harbor.

- 15 -

TABLES and FIGURES

Table 1. Discharges into Corpus Christi Inner Harbor. August 10, 1982.

Di schargerPermit

No.

Flow

(mgd)BOD,

(lbS/day)

% ofTotalB0D5

COD

(lbs/day)

% of

TotalCOD

NOD

(lbs/day)

% of

TotalNOD

Total(lbs/day,BOD, &COD5* NOD)

* of

Comb.

Total

Aimuoni a

(lbs/day)Nitrate

(lbs/day)

City of Corpus Christi,Broadway STP

10401-05 P

E

10.08.5

37531205 63.6 7727 54.2 3555 81.6 12487 61.3 780 213

Southwestern Refining Co., Inc. 00457-1 P

E

Report1.32

584

99 5.2

4379

561 3.9 2.5 .1 662.5 3.3 0.5 198

Champlin Petroleum Co. 00467-1 P

E

8.0

2.578

2193172 9.1

17123

2472 17.3 392 9 3036 14.9 86 8.4

American Chrome & Chemicals, Inc. 00349 P

E

Report7.5 62.6 3.3 1438.6 10.1 142.6 3.3 1643.8 8.1 31.2 11.3

Coastal States Petroleum Co. 0465 P

E

Report2.29

752248 13.1

84921356 9.5 252.6 5.8 1856.6 9 55 573

Asarco, Inc. 00531 P

E

1.5.636 133 .9

Corpus Christi Petrochemical Co. 2075 P

E

Report.411

240

58 3

2556

264 1.9 7.2 .2 329.2 1.6 1.6 22.3

El Paso Products Co. 02318 P

E

Report.0009

22.2 —

1213.4 — 3 — .66 <.0002

Sabre Refining Co. 1909 P

E

Report.0528

2821.3 .1

249035 .2 .6 — 36.9 .2 .14 .9

KOCH Refining Co. 00531 P

E .852

932

50 2.6

6681

270 1.9 3.2 — 323.2 1.6

392

.7 .4

TOTAL P

E 1896.1

875.814260

418424358.7 20375.2

392

955.8

P = PermittedE = Effluent measured value♦Permit Violations

Past SurveyData

1968 thru 1970 27690 (approx. value)Aug. 1973 Survey 3414.6 13094.39 21621 5113.4

Table 1. Discharges into Corpus Christi Inner Harbor. August 10, 1982. (CONTINUED)

Permit Nitrite T-PO. TSS Lab CURes. Temp.Discharger No. (lbs/day) (lbs/day) (lbs/day) pH (mg/1) °F

City of Corpus Christi, 10401-05 PBroadway STP E

Southwestern Refining Co., Inc. 00457-1 PE

Champlin Petroleum Co. 00467-1 PE

American Chrome & Chemicals, Inc. 00349 PE

Coastal States Petroleum Co. 0465 PE

Asarco, Inc. 00531 P 100E 87.8

Corpus Christi Petrochemical Co. 2075 P 313 6.0-9.0E 1.85 1.2 41 8.2

El Paso Products Co. 02318 P 49 6.0-9.0E .11 .025 2 7.3

1 . Sabre Refining Co. 1909 P 191 6.0-9.0» E .4 .14 <5 7.8•

KOCH Refining Co. 00531 P 641 6.0-9.0 105E < .2 .9 71 7.5 87.8

TOTAL P 8351E 56.2 373.3 4971

42 340

3753

21276.0-9.0

7.2

1.01.7 83

.5 3.6

584

* 704.5

6.0-9.0

7.6

98

85

1.1 16.11925215

6.0-9.07.4 86

5 5 1313.56.0-9.07.8

10782

5.2 6.3

895

497

6.0-9.0

7.5

CD

Sample TypeTimeFlow, Sewage, MGDFlow, Industrial, MGDPHConductivityTotal Suspended Solids, mg/1Fixed Suspended SolidsVolatile Suspended SolidsTotal ResidueSettleable MatterHardness

BOD

COD

Temperature FD.O. mg/1Turbidity, JTUP. AlkalinityT. AlkalinityChlorides, mg/1SulphatesT-PO.

NH,-NN0,-NNOf-NCadmium, mg/1MercurySeleniumZ1ncOil & GreaseTotal ColiformFecal ColiformChlorine ResidualChromiumCOD Load lbs./dayNH3 Load lbs./dayBODc Load lbs./day

3 % of Total

B0Du1t Load lbs'/dav♦Permit Violation

Table 1A. Discharges to Corpus Christi Inner Harbor. August 20, 1973.

C.C. Broadway STP Nueces Bay Southwestern Champlin . Oak ParkWCO 10401-05 Boulevard Ditch WCO 00457 WCO 00467 Avenue Ditch

Permitted Effluent Permitted Effluent Permitted Effluent Permitted Effluent Permitted Effluent

Grab Grab Grab Grab Grab

1500 1445 1400 1045 1000

15.00 10.0 No. meas. Flow None None

No. meas. Flow 3.0 0.5 0.773 0.79 0.2

7.2 8.4 6.0-9.5 8.4 5.5-9.5 8.75 8.7

2368 7840 60 3780 4420 2400

30 28 11 48 21 <10

2 9 7 7

26 2 50 41 14

296 1080 431 500 275

30 25 3.5 35 25 30 15 3.5

90 50 180 120 300 65 <20

87 89 95 89 105 86 87

2.7 6.9 > 2.0 7.9 >2.0 5.5 5.7

40 10 100 40 12

0 2 0 0 0

176 196 150 98 86

470 1770 680 1020 570

152 482 420 273 64

23.8 3.9 1.1 0.96 0.39

11 0.1 17.8 0.6 0.1

2.3 0.08 2.6 <0.05 <0.05

<0.3 1.0 0.3 <0.3 <0.3

♦0.02 <0.01 <0.01 ♦ .02 <0.01 ♦ .02 <0.01 <0.01

♦0.005 0.001 0.0007 ♦ .005 0.0006 ♦ .005 0.0006 0.000*

♦0.02 < 0.001 0.001 ♦ .02 0.013 ♦ .02 0.006 <0.001

♦5.0 0.1 0.1 ♦ 5.0 0.1 ♦5.0 0.1 <0.1

130 9100 3000

10 560♦5.0 0.6

150

1.07506.00 500.40 428.26

4183.34 338.47 18.03

3753.00 2085.00 875.7 104.25 193.40 98.83 5.84

61.2 3.05 2.90

2606.25 30.31 123.54

roo

Table 1A. Discharges to Corpus Christi Inner Harbor. August 20, 1973 . (CONTINUE0)

ASARCO PPG Industries Coastal States Drain Ditch at Howell HydrocarbonWCO 00314 WCO 00349-01 WCO 00465 Heldenfels WCO 01037

Permitted Effluent

Grab

Permitted Effluent

Grab

Permitted Effluent

Grab

Permitted Effluent

Grab

Permitted Effluent

Sample Type GrabTime 1030 0915 0930 1115 1000F.low, Sewage, MGD < 0.1% None — None

Flow, Industrial, MGD 1.5 1.1 100 81.0 6.5 1.9 0.972 Variable/rai n <10 gpinpH 6.0-10.5 9.5 7.6 5.5-9.5 8.0 at 7.2 7.2

Conductivity 6110 60,368 4290 at 4758 2080Total Suspended Solids, mg/1 30 <10 No. specs. 53 17 •0 14 26Fixed Suspended Solids 33 2 CJ

at9 7

Volatile Suspended Solids 20 15 •0 5 19

Total Residue 52,000Settleable Matter

1Hardness 2180 5320 390 465 215BOD 3.0 3 40 15 z 9.5 30

COD 160 <20 35 300 60 - 60 225

Temperature F 110 92 107 102 100 87 4_> 88 87

D.O., mg/1 0.0 5.7 >2.0 5.9 5.9 0.9

Turbidity JTU 5 50 35 C/J 58 120P. Alkalinity 10 0 0 •J- 0 0

T. Alkalinity 26 156 22 ** 46 80

Chlorides, mg/1 4000 130 29,000 15,700 20,000 780 <00

920 456

Sulphates 6000 2300 3,000 2,150 2,500 432 0 432 93

T-PO.NH--N

N0,-NNO3-NCadmium

1.1 . 0.23 6.3 1/1 5.9 0.670.7 1.6 7.0 •0 6.7 0.2

<0.05 <0.05 1.55 •- 1.45 <0.05

<0.3 0.3 52 c 47 <0.3

0.35 0.025 ♦.02 <0.01 ♦.02 <0.01 ^- <0.01 ♦.02 <0.01

Mercury 0.005 0.0026 ♦.005 0.033 ♦.005 0.008 0.0016 ♦.005 <0.005

Selenium 0.10 0.53 ♦.02 0.003 ♦.02 0.084 0.074 ♦.02 <0.001

Zinc 6.0 0.3 ♦5.0 <0.01 ♦5.0 <0.1 <0.1 ♦5.0 0.3

Oil & Grease 4.4 None 23.5&60.8

Total Coliform confluent non-col1

Fecal Coliform <2

Chlorine ResidualChromiumCOD Load lbs./day <183.48 950.76

NH. Load lbs./dayBOD,- Load lbs./day

D % of Total

29.28 505.80

27.52 None Net 2168.4 237.69 (77.01) <3.6

0.80 6.96

B00u1t Load lbs./day 34.40 I 297.11 <4.5

♦Permit Violation

ro

Table 1A. Discharges to Corpus Christi Inner Harbor. August 20, 1973. (CONTINUED)

CPC International - WCO 00358 Suntide

Page 1 Page 2 Page 4 WCO 00531 TOTALS

Permitted Effluent

Grab

Permitted Effluent

Grab

Permitted Effluent

Grab

Permitted Effluent

Grab

Permitted Effluent

Sample TypeTime 1545 1350 1415 0930

Flow, Sewage, MGD None None None None 0.075 0.085 2% <16.149 10.085

Flow, Industrial, MGD 7.5 5.35 0.5 0.382 None None 3.7 1.008 123.473 92.044

pH 7.4 5.0-8.0 7.7 7.5 5.5-9.5 7.2

Conductivity 47,880 2877 1001 2304

Total Suspended Solids, mg/1 46 50 278 30 15 50 61

Fixed Suspended Solids 32 29 2 34

Volatile Suspended Solids 14 249 13 27

Total Residue 8000

Settleable Matter 7

Hardness 4370 85 202 225

BOD 8.5 50 125 30 12 50 8.5

COD 40 75 410 <20 290 50

Temperature F 105 97 100 107 91 105 86

D.O. mg/1 6.5 2.7 3.7 6.1

Turbidity JTU 15 325 60 90

P. Alkalinity 0 0 0 0

T. Alkalinity 120 462 120 82

Chlorides mg/1 12,520 4000 435 171 20,000 390

Sulphates 1900 1000 267 74 3,000 266

T-PO. 0.46 100 1.1 5.2

NH,-N <0.1 0.7 <0.1 0.2

no;-n <0.05 < 0.05 0.06 <0.05

NO3-N <0.3 < 0.3 0.4 4.7

Cadmium, mg/1 ♦0.02 0.05 ♦0.02 < 0.01 ♦0.02 -- ♦0.02 <0.01

Mercury ♦0.005 0.006 ♦0.005 0.0036 ♦0.005 0.0016 ♦0.005 0.0016

Selenium ♦0.02 0.001 ♦0.02 < 0.001 ♦0.02 0.01 ♦0.02 0.018

Zinc ♦5.0 0.2 ♦5.0 0.2 ♦5.0 <0.02 ♦5.0 0.2

Oil & Grease

Total Coliform 2

Fecal Coliform 278

Chlorine Residual >1.0 2.1

Chromium

COD Load lbs./day 1784.76 1306.21 <14.18 420.31 13094.39

NH, Load lbs./day <20.35 10.17 <0.3 7.67 5113.41

B0Dc Load lbs./day3 % of Total

379.26 208.5 398.24 18.77 8.51 1542.9 71.46 8760.67 3414.36

11.12 11.67 0.24 2.09 100.03

B0Dun Load lbs./day 474.07 . 497.80 10.63 89.32 4267.95♦Permit Violation

Loading Calculation

B0DuU = B0D5 + 0.8= 3414.36 + 0.8

= 4267.95 lbs./day

C0DpART = (0.5MC0DEFauENT)= (0.5M13.094.39)

= 6547.20

NOD = (4.56HNH3-NEFFLUENT)= 5113.41

TOTAL OXYGEN = 15,928.56 lbs./day

DEMAND (approximate)

TABLE 2

DRAINAGE DITCHES' WATER QUALITY

CORPUS CHRISTI INNER HARBOR STUDY

(Samples Collected August 9, 1982)

PARAMETER

DITCH 1

SEE MAP

DSl

DITCH 2

SEE MAP

DS2

DITCH 3

SEE MAP

DS3

DITCH 4

SEE MAP

DS4

pH (units) 7.4 7.3 7.2 7.2

T-Phosphorus (mg/1 as P) 1.1 0.89 0.73 2.0

O-Phosphorus (mg/1 as P) 0.22 0.23 0.28 0.21

Ammonia-N (mg/1 as N 0.30 0.26 0.13 0.13

Nitrate-N (mg/1 as N) 0.87 0.45 0.57 0.90

Nitrite-N (mg/1 as N) 0.09 0.05 0.08 0.05

TSS (mg/1) 200 210 125 606

COD (mg/1) 189 153 69 158

B0D5 (mg/1) • * * *

interference

- 22 -

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X

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QC

z

CO

z>

Q.

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AU6 198? 12924CORPUS CHRISTI, TEXASINTERNATIONAL AIRPORT

TABLE 3

LOCALISSN 0198-4977

CLIMATOLOGICAL DATANA1I0NAL HEATHER SERVICE OFC Monthly Summary *'4»es o« *

l»II1U0I 21" 4b N lONGHuOE 97° 30* H CLCVAItON IGROUND l 41 FECI TIHC 1W CENTRAL HBAN 112924

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lb 9b 73 85 0 72 0 20 0 0 0 29.91 15 11.0 12.1 17 13 757 9b 5 3 lb17 98s 75 87 2 73 0 22 0 0 0 29.88 15 5.9 9.2 17 13 722 92 5 4 1716 94 74 84 -1 74 0 19 0 0 0 29.87 09 5.4 9.1 17 11 447 57 7 b 18n 9b 7b 8b 1 74 0 21 0 0 0 29.93 10 b.2 9.1 18 11 520 b7 3 4 1920 94 74 84 -1 74 0 19 0 .01 0 30.00 08 b.O 8.9 14 09 341 44 7 5 20

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E AND 0A1EHAIIfl UH UKP. flimitun ii bp. 0 2b24 1HUN0ERS10RHS 3 PRECIPIIAIION SNOH. ICE PEUEIS; so0 <• 32° J 32° 5 0° 0EP. 0EP. heavt roe 0 .b3 8- 9 01 0 129 0 0 0 o ?? CLEAR 15 P*RU I 110U0T 1 3 CLOUD* 3

t EXTREME FOR THE MONTH - LAST OCCURRENCE IF MORE THAN ONE. DATA IN COLS b AND 12-15 ARE BASED ON 7 OR MORC OBSERVATIONST TRACE AMOUNT. AT 3-H0UR INTERVALS. RESULTANT HIND IS THE VECTOR SUM OF HIND* ALSO ON EARLIER OAIE(S). SPEEDS AND DIRECTIONS OIVIDED BY THE NUMBER OF OBSERVATIONS.HEAVY FOG: VISIBILITY 1/4 MILE OR LESS. ONE OF THREE HINO SPEEDS IS GIVEN UNDER FASTEST MILE: FASTESTBLANK ENTRIES DENOTE MISSING DATA. MILE - HIGHEST RECOROED SPEED FOR WHICH A MILE OF HINO PASSES

STATION (DIRECTION IN COMPASS POINTS). FASTEST OBSERVED ONEMINUTE HIND • HIGHEST ONE MINUTE SPEED IOIRECTION IN TENS OFOEGREESI. PEAK GUST • HIGHEST INSTANTANEOUS HIND SPEED IA /APPEARS IN THE DIRECTION COLUMN!. ERRORS HILL BE CORRCCTCOAND CHANGES IN SUMMARY DATA HILL BE ANNOTATED IN THE ANNUALPUBLICATION.

I CERTIFY THAT THIS IS AN OFFICIAL PUBLICATION OF THE NATIONAL OCEANIC AND ATMOSPHERIC ADHINISTRATION. AND IS COMPILED FROHRECORDS ON FILE AT THE NATIONAL CLIMATIC CENTER. ASHEVILLE. NORTH CAROLINA. 28801. «.««riutu tnw

noaa MAIIORAl OCEANIC AROAIROSPHERIC AORIIISIRAIIOI,

/ERVIRORHEIIAL OAIA A!D/NA!IOH«l CLIRAIIC CEllER1/ INFORHATIOR SERVICE / ASHEVILLE. I0RIH CAROLINA

- 23 -

l&tUJ-ACTING OIRECTORNATIONAL CLIMATIC CENTER

OBSERVATIONS Al 3-HOUR INTERVALSAUG 1182CORPUS CHR STI

12124. TEXAS

X

Xto. 22

vltl-BllUT

HEATHER

UNPtRAlUfU

>_ o

M

HINO4/t

m s

VISBlL

-

IT

UEAIHER

TEMPERATURE

v*

HINO

X

X£

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UEAIHER

TEMPERATURE

M

UINO

«/»o

ir>a

o v->o

o"o

*/•at xo

ri ^ a>j O m X at xo j* ;-* CO 2 C3 m

oXM

X xo:S zt a> 5 2 X

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oa.

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o

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.a

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ac

as

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X

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X

X

ac

o

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a.

OAT 01 OAT 02 OAT 03

10 e UNI to 80 77 7b 08 15 11 0 UNL 10 80 7b 75 65 15 9 0 UNL to 81 77 75 62 tb 14

n 0 UNI 10 78 77 7b 94 17 9 0 UNL 10 77 75 74 11 15 b 0 UNL 10 71 7b 75 •6 17 10

9b i UNI 10 77 7b 75 94 17 9 0 UNL 10 7b 74 73 10 14 7 1 UNL 7 77 75 74 11 13 7

)9 4 UNL 12 87 76 74 IS 17 14 4 UNL 15 68 79 75 b5 20 It 8 21 12 66 76 74 (3 17 19

12 3 UNI 15 94 60 74 52 14 H 4 UNL 15 15 76 71 4b 14 12 7 34 12 12 76 73 54 14 19

IS 0 UNI 15 9b 7b b6 40 14 15 3 UNL 15 94 76 71 47 14 17 2 DHL 10 14 79 73 51 tb 21

11 0 UNI 12 90 77 71 54 IS 18 3 UNL 15 89 76 73 51 13 16 5 UNL to 68 77 73 bl 14 19

71 0 UNI 10 87 77 75 79 14 1% 0 UNL 15 63 77 75 77 14 15 5 UNL to 83 77 75 77 14 lb

OAT 04 OAT 05 OAT 0b

90 0 UNL 10 81 77 7b 85 15 12 0 UNL 7 78 75 74 68 14 6 0 UNL 7 7b 73 71 85 13 5

93 0 UNL 10 79 77 7b 91 lb 10 0 UNL 7 75 74 73 14 14 4 0 UNL 7 74 71 70 87 25 b

9b 0 UNL 7 77 7b 75 94 15 9 0 UNL 7 73 72 72 17 14 b 3 UNL 7 73 71 70 10 00 0

99 3 UNL 12 86 78 74 b3 17 17 b 20 10 8b 78 75 70 17 10 7 250 7 6b 77 74 be 27 3

1? 0 UNL 12 95 77 70 44 17 18 2 UNL 12 94 79 73 51 09 10 5 UNL 6 92 78 73 54 01 10

IS 0 UNL 12 93 7b 18 44 15 18 0 UNL 12 95 77 bl 43 12 13 6 UNL 7 9b 75 bS 3b 01. 11

18 0 UNL 10 88 77 72 $1 14 20 0 UNL to 91 75 b6 47 13 14 2 UNL 6 90 75 b9 50 12 15

71 0 UNL 8 81 7b 74 79 15 13 5 UNL 8 81 75 71 77 12 9 0 UNL 7 81 74 71 72 15 6


90 0 UNL 7 76 74 72 82 17 8 6 10 7 80 7b 75 85 14 9 5 UNL 10 7b 74 73 90 13 b

93 s URL 7 74 71 bl 84 11 7 8 70 7 60 7b 75 85 20 b 3 UNL 10 75 74 73 94 14 5

9b 8 too 4 r 75 77 70 85 21 5 10 70 b H 76 73 71 71 18 5 8 75 7 7b 75 74 94 00 0

99 10 too 3 RH 80 75 73 71 28 4 1 80 b N 83 7b 73 72 16 7 to 70 7 79 77 7b 11 14 4

12 to 90 5 H 85 7b 72 bS 21 4 10 70 7 90 77 71 54 24 b 10 40 5 INH 74 73 72 94 16 11

IS 10 90 b N 8b 77 74 •8 12 12 10 35 1 1RH 74 72 71 90 lb 6 to 40 7 76 74 73 65 17 15

18 s UNL b H 87 75 70 57 13 14 10 70 7 R 80 77 7b 86 15 11 to 250 to 80 74 72 77 17 b

71 9 UNI 8 80 73 70 72 14 10 to 250 10 77 74 73 86 15 6 8 250 10 7b 74 73 90 It 6

OAT 10 OAT It OAT 12

90 7 70 10 77 75 74 11 11 7 3 UNL 6 80 76 77 91 13 9 3 URL to 80 76 77 11 14 8

93 7 2S0 7 7b 75 75 17 01 5 5 UNL 8 60 76 77 91 14 b 3 URL 8 78 77 7b 94 17 7

9b 1 100 7 77 7b 75 94 01 b 7 120 8 77 7b 75 94 14 7 1 UNL 10 77 7b 75 94 17 5

99 8 80 8 82 79 78 68 It 7 5 URL 15 0b 79 77 75 17 to 5 UNL 15 8b 76 75 70 19 15

12 7 250 10 87 78 75 b8 11 12 5 UNL 15 93 79 73 52 tb 10 4 UNL 15 94 76 72 49 lb 6

IS 7 250 IS 92 79 74 5b 13 15 4 UNL 15 94 76 71 47 13 16 3 UNL 15 94 78 72 49 13 2018 S UNI 15 68 71 75 bS 14 14 3 UNL 15 69 76 74 bt 13 14 5 UNL 15 89 76 74 bl 14 19

71 4 UNI 10 61 77 7b 85 13 9 3 UNL 15 62 78 77 65 15 to 3 UNL 15 62 76 7b 82 15 13


90 3 UNL IS 80 77 7b 88 17 1 0 UNL 15 79 7b 75 86 17 9 0 UNL 10 80 7b 75 65 17 12

03 0 UNL IS 76 7b 75 91 18 8 2 UNL IS 7b 75 74 14 tb 7 0 UNL 10 76 7b 75 91 18 10

9b 3 UNL 10 75 74 74 97 12 3 1 UNL 12 77 75 74 11 17 6 0 URL to 77 7b 75 94 17 6

99 S UNL 12 87 71 7b 70 16 14 2 UNL 12 68 77 73 bl 16 18 1 UNL 15 • 7 76 74 bS 11 17

12 3 UNL 15 94 80 74 52 lb 15 2 UNL 15 94 80 74 52 15 lb 4 UNL 15 94 79 73 51 15 tbIS 3 UNL 15 95 78 71 4b 14 17 0 UNL 12 95 80 74 51 14 17 0 UNL 15 95 76 71 4b 14 17

18 3 UNL IS 66 77 73 bl 14 17 3 UNL 10 89 78 73 51 14 17 0 UNL 10 69 7b 71 55 14 2171 0 UNL IS 62 7b 74 77 IS IS 3 UNL to 8? 77 75 71 lb 17 0 UNL 10 81 7b 74 79 tb 14

0AY lb OAT 17 OAT 16

90 2 UNL 10 71 7b 75 86 lb 10 0 UNL 15 60 7b 74 82 19 b 0 UNL 10 79 75 74 65 tl 593 0 UNL 10 75 73 72 10 11 b 3 UNL to 77 75 74 It 19 5 3 UNL 10 77 74 73 86 28 3

9b 4 UNL to 73 72 72 17 14 5 S UNL to 7b 74 73 90 29 3 4 UNL 10 7b 73 71 85 31 4

91 7 250 15 87 78 74 bS 70 11 7 250 IS 6b 78 75 70 25 7 5 UNL 15 85 78 7b 75 02 9

12 S UNL 15 95 77 70 44 15 10 5 UNL 15 94 7b GO 43 It 6 5 UNL 15 93 79 73 52 08 9IS 4 ONI 15 95 7b be 41 13 14 5 UNL 15 9b 79 72 4b 10 11 6 UNL 15 94 78 72 41 10 14

18 3 UNL IS 90 75 b9 50 13 IS 2 UNL 15 91 78 72 54 13 15 10 100 12 8b 78 75 70 09 It

71 0 UNL 15 83 77 74 74 15 13 0 UNL 15 82 7b 74 77 lb 9 10 100 12 83 77 75 77 11 6

WEATHER CODESs TORNADO ZL FREEZING DRIZZLE IPH ICE PELLET SHOWERS 6N BLOWING SANDT THUNDERSTORM S SN0U A HAIL BS BLOWING SNOW0 SQUALL SH SNOH SHOWERS F FOG BY BLOWING SPRAYR RAIN SG SNOH GRAINS IF ICE FOG K SMOKERH RAIN SHOWERS SP SNOH PELLETS GF GROUND FOG H HAZEZR FREEZING RAIN IC ICE CRYSTALS BO BLOWING OUST 0 OUSTL DRIZZLE IP ICE PELLETS

CEILING: UNL INDICATES UNLIMITEDWIND DIRECTION: DIRECTIONS ARE THOSE FROM WHICH THE HINO BLOWS. INDICATED IN TENS OF DEGREES

FROM TRUE NORTH: I.E.. 09 FOR EAST. 18 FOR SOUTH. 27 FOR NEST. AN ENTRY OF00 INDICATES CALM

SPEED: THE FASTEST OBSERVED AVERAGE ONE-MINUTE VALUE. EXPRESSED IN KNOTS IHPHsKNOTS X 1.151.

- 24 -

en

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HOURLY PRECIPITATION (WATER EQUIVALENT IN INCHES)AUG 1982 12924CORPUS CHRISTI. TEXAS

A.M. HOUR END NG AT P.M. HOUR ENDING AT

3 4 5 b 7 8 9 10 11 12 1 2 3 4 5 b 7 8 9 10 11 12

20

.01 10.37 .07 .02 .OS

.01

MAXIMUM SH JR1 DURA (ION PRECIPI rAT I ON

TIME PERIOD IHIKUIESI 5 10 15 20 30 45 60 80 100 120 150 180

PRECIPITATION (INCHES) 00.12 00.20 00.24 00.29 00.33 00.35 00.42 00.43 00.45 00.46 00.47 00.49

ENDED: DATE 08 08 08 08 08 08 08 08 08 08 08 08

ENDED: TINE 1450 1455 1500 1505 1515 1515. 1515 1535 1555 lb15 1645 1715

THE PRECIPITATION AHOUNTS FOR THE INDICAIEO TINE INTERVALS NAT OCCURAI ANT IINE DURING THE HONIH. THE TINE INDICATED IS THE ENDING TINEOF IHE INTERVAL. DATE AND TIHE ARE NOT ENTERED FOR TRACE AHOUNTS.

SUBSCRIPTION PRICE AND ORDERING INFORMATION AVAILABLE FROH:THE NATIONAL CLIMATIC CENTER. FEDERAL BUILDING. ASHEVILLE M.C.ATTN: PUBLICATIONS

28801 CORPUS CHRISTI. TEXASUSCONR - NORA - ASHEVILLE. NC

U.S. DEPARTHENT OF COMMERCENATIONAL CLIMATIC CENTERFEDERAL BUIL0IN6ASHEVILLE. N.C. 28801

AN EQUAL OPPORTUNITT ENPLOTER

- 26 -

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27-

ro03

Table 4 (Continued)

Stati on

No.

Depthft. Time TOR-

D.O.

(mg/1)pH(units)

Cond.(uinhos/ciii) Time W-

D.O.

(mg/1)pH(units)

Cond.

(umhos/cin)

55700

Time

1835

Temp.(8C)

29.2

D.O.

(mg/1)

6.4

PH(units)

8.0

Cond.

(umhos/cm)

8 1 0744 28.4 4.7 7.8 55700 1306 28.7 5.4 7.9 55900

10 0744 28.6 4.0 7.8 55800 1306 28.6 4.3 7.8 55800 1835 29.0 4.9 7.9 56000

20 0744 28.6 3.5 7.8 56200 1306 28.5 3.4 7.8 56600 1835 28.7 3.4 7.8 56200

30 0744 28.6 3.0 7.8 57700 1306 28.5 2.9 7.8 57400 1835 28.6 3.0 7.8 56800

40 0744 28.3 2.7 7.7 58900 1306 28.4 2.6 7.7 58200 1835 28.5 2.4 7.8 58300

9 1 0739 28.2 4.9 7.8 54900 1303 28.7 4.7 7.8 55900 1831 29.1 5.9 8.0 55000

10 0739 28.6 3.6 7.8 55900 1303 28.7 3.8 7.8 56200 1831 29.1 5.6 7.9 55700

20 0739 28.7 3.0 7.8 57100 1303 28.6 3.3 7.8 56600 1831 29.0 3.5 7.8 56300

30 0739 28.5 2.9 7.8 58400 1303 28.6 3.1 7.8 56900 1831 28.6 2.7 7.8 57200

40 0739 28.4 2.7 7.7 59000 1303 28.5 2.7 7.7 58200 1831 28.5 2.5 7.8 57900

10 1 0733 28.4 4.6 7.8 55400 1300 28.6 4.5 7.9 55700 1826 29.1 5.8 7.9 55500

10 0733 28.6 4.0 7.8 55500 1300 28.6 3.8 7.8 55700 1826 29.0 4.9 7.9 55700

20 0733 28.5 3.7 7.8 55600 1300 28.5 3.2 7.8 56000 1826 28.9 4.1 7.9 55900

30 0733 28.6 2.8 7.8 56800 1300 28.5 2.6 7.7 57300 1826 28.7 2.8 7.8 56900

40 0733 28.4 2.5 7.7 58700 1300 28.5 2.4 7.7 58000 1826 28.6 2.3 7.8 57700

11 1 0727 28.5 4.8 7.8 55200 1253 28.7 4.3 7.9 55500 1822 29.1 5.5 7.9 55300

10 0727 28.5 4.1 7.8 55300 1253 28.7 3.6 7.8 56000 1822 29.1 5.2 7.9 55600

20 0727 28.5 3.3 7.8 55800 1253 28.6 3.0 7.8 56500 1822 29.0 4.4 7.9 56000

30 0727 28.7 2.6 7.7 57400 1253 28.6 2.8 7.8 56800 1822 28.8 2.8 7.8 56700

40 0727 28.4 2.1 7.7 58400 1253 28.6 2.2 7.7 58000 1822 28.7 2.2 7.7 57800

12 1 0723 28.5 4.9 7.8 55100 1248 28.6 4.7 7.9 55500 1817 29.2 4.9 7.9 55600

10 0723 28.5 4.2 7.8 55100 1248 28.8 4.0 7.8 55500 1817 29.1 4.6 7.9 55800

20 0723 28.8 2.8 7.7 56400 1248 28.7 3.2 7.8 55800 1817 29.0 3.4 7.8 56100

30 0723 28.7 2.4 7.7 57500 1248 28.6 2.8 7.8 56500 1817 28.8 2.7 7.8 56700

40 0723 28.6 2.3 7.7 57900 1248 28.6 2.1 7.7 57500 1817 28.7 2.0 7.8 57000

13 1 0717 28.3 5.3 7.8 54600 1242 28.6 4.8 7.9 54700 1813 29.2 5.1 7.9 55500

10 0717 28.4 4.3 7.8 55100 1242 28.6 3.6 7.8 55600 1813 29.2 4.8 7.9 55600

20 0717 28.5 3.6 7.7 55900 1242 28.7 3.0 7.8 56200 1813 29.1 4.4 7.9 55700

30 0717 28.7 2.6 7.7 57100 1242 28.7 2.7 7.8 56500 1813 28.8 2.8 7.8 56100

40 0717 28.6 2.0 7.6 58200 1242 28.6 2.3 7.7 57400 1813 28.7 1.8 7.7 57300

14 1 0711 28.4 5.1 7.7 55000 1239 28.6 5.3 7.9 55100 1809 29.3 6.0 7.9 55300

10 0711 28.4 4.8 7.7 54800 1239 28.6 4.7 7.9 55500 1809 29.2 5.4 7.9 55400

20 0711 28.8 2.8 7.6 56500 1239 28.6 3.7 7.8 55800 1809 28.9 3.8 7.9 55900

30 0711 28.7 2.6 7.6 57000 1239 28.7 2.8 7.8 56600 1809 28.7 2.7 7.8 56500

40 0711 28.6 2.0 7.6 57900 1239 28.6 1.6 7.7 57700 1809 28.7 2.1 7.8 57200

15 1 0654 28.4 6.6 7.7 55000 1228 28.7 4.3 7.8 55800 1802 29.2 5.7 8.0 55500

10 0654 28.4 5.1 7.6 55500 1228 28.7 4.2 7.9 55800 1802 29.2 5.7 7.9 55600

20 0654 28.5 4.1 7.6 55900 1228 28.7 3.3 7.8 55900 1802 29.1 5.4 8.0 55600

30 0654 28.6 3.3 7.6 56200 1228 28.7 3.2 7.8 56000 1802 29.0 3.2 7.8 56200

40 0654 28.7 2.2 7.6 57100 1228 28.7 2.8 7.8 56500 1802 28.7 2.8 7.8 56500

63

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TABLE 7

Summary of metals in water data from Texas Department of Water Resourcesmonitoring stations in estuaries including bays and tidal segments of riversand in the Gulf. Period covered is January 1975 through January 1979. Datafrom the Basic Water Monitoring Program Stations and other monthly stationsin the Houston Ship Channel and Sea Rim State Park are excluded from this tableThis table is an addendum to Table 3 in Report No. SR-4.

Usual Limit of % Determinations

Number of Detection Below Limit of

Metal Determinations ug/1 Detection

Arsenic 48 10 60

Cadmiurn 64 10 64

Chromium (Total) 61 20 36

Copper 61 20 30

Iron 70 25 3

Lead 61 50 67

Manganese 62 20 5

Mercury 70 0.2 63

Nickel 47 20 32

Selenium 43 2 98

Silver 40 10 48

Zinc 50 20 46

- 31 -

TABLE 8

PESTICIDES IN WATER


AUGUST 10i, 1982

PARAMETER

(ug/1)

STATION 8CMS 2484.02

NAVIGATION BLVD.

2,4-D <20

2, 4, 5-T <5

Si1vex <5

Heptachlor <0.02

Heptachlor Epoxide <0.06

Lindane <0.03

Malathion <0.4

Methoxychlor <0.5

Parathion

PCB

<0.25

<1

- 32 -

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TABLE 10

INTERPRETATION OF FC/FS RATIOS


AUGUST 10, 1982

Domestic Wastes (predominantly human) >4.0

Animal Wastes <0.7

Combined Domestic and Animal Wastes 0.7 to 4.0

- 34 -

se-

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TABLE 12


August 10, 1982

Pesticide in Sediment

Parameter(ug/kg)

Station 8

CMS 2484.02

Navigation Blvd.

Aldrin <0.5

Chlordane <10

DDD <8.0

DDE <6.5

DDT <8.0

Diazinon <5.0

Dieldrin <2.0

Endrin <3.0

Heptachlor <0.5

Heptachlor Epoxide <1.0

Lindane <1.0

Methoxychlor <10

Methyl Parathion <3.0

Parathion <3.0

Toxaphene <50

PCB 83

- 36 -

TABLE 13

BENTHIC MACROINVERTEBRATE DATA

CORPUS CHRISTI INNER HARBOR SPECIAL STUDY

AUGUST 10, 1982

C.C. BAY

@ A 62STA. 1

C.C. BAY0 A 86

STA. 2

CCIH @AVERY

STA. 6

CCIH @

NAVIGATIONSTA. 8

CCIH@TULE LAKESTA. 13

CCIH @VIOLA

STA. 15

Mollusks

Nuoulana acutaMulinia lateralisChione sp.Anaohis semiplioataAnaohis obesa

3

1

3

- -

*

*

*

*

*

*

*

*

*

*

1

1

Arthopods

Cyolaspis variansListriella sp,Menippe meroenaria

3

4

1 _ mm

*

*

*

*-

Annelids

Gyptis vittataNepeis suooineaMinuspio oirriferaStreblospio benediotiParaprionospio pinnataHaplosooloplos fragilisTharyx setigeraCossura delta

7

4

2

1

2

2

1

6

2

26

2

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

32

Nemerteans

Cerebratulus sp.Nemertean 3

1

5

—

*

* *-

Total # IndividualsTotal # Species

36

13

15

5

28

2

0

0

0

0

34

3

No organisms found.

- 37 -

figure1

SurveyStationLocationin

CorpusChristiInnerHarbor,August1982

StationIisatCCSCMarker62

COCD

Rgure 2

Location of Wastewater Discharges to

Corpus Christi Inner Harbor, August 1982

Station I

Station 2

Station 3

Station 4

Station 5

Station 6

Station 7

Station 8

Station 9

Station 10

Station 11

Station 12

Station 13

Station 14

Station 15

Corpus Christi Bay at Corpus Christi Ship Channel Marker 62

Harbor Bridge

City of Corpus Christi-Broadway STP

Southwestern Refining Co., Inc.

Champlin Petroleum Company

American Chrome and Chemicals

Navigation Boulevard Bridge

Coastal States Petroleum Company

ASARCO, Inc.

Corpus Christi Petrochemical Company andEl Paso Products Company

Saber Refining Company

Koch Refining Company

End of channel at Viola Basin

Figure 3

Municipal and Industrial Discharges toCorpus Christi Inner Harbor August, 1982

-40

Station

Station

Station

1

2

3

4

5

Corpus Christi Bay at Corpus Christi Ship Channel Marker 62

Harbor Bridge

•* Uo-1

Station

Station -^ DS-3

Station 6

Station 7

Station 8

Station 9

Station IO

Station II

Station 12

Station 13

Station 14

Station 15

DS-4 Navigation Boulevard Bridge

End of channel at Viola Basin

Figure 4

Non-Point Sources Location of Drainage Ditches Discharging toCorpus Christi Inner Harbor August, 1982

41

25-

20-

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g15h 4)

>»Xo

210Q

JL

-Ift.

-20ft.

•40ft.•i

Approximately100%DissolvedOxygenSaturation

JLJLJL

789

Stations

10II12131415

Figure5

DissolvedOxygenSamplesTakenBeforeNoon,August1982

25

20-

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-20ft.-—

g",5-40ft.••

>>Xo

Dissolvedo

Approximately100%DissolvedOxygenSaturation

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Figure6

DissolvedOxygenSamplesTakenatMidday,August1982

s

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Figure7

DissolvedOxygenSamplesTakenatSunset,August1982

Ec

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25

20

15

S 10o

5 -

Approximately 100% Dissolved Oxygen Saturation

2=__=_______L2 3 4 5 6 7 8 9 10 II 12 13 14 15

Stations

Figure 8

Dissolved Oxygen, August 20, 1973,

Photic Zone Approximately 0 to 4 Feet

CD

E

Q.(0O

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1.0-

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Stations

10

Figure9

TotalPhosphorus,August1982

131415

44.

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1.0

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789

Stations

10

Figure10

Orthophosphate,August20,1973

12131415

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1966

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1969I1970

1971

1972

1973

1974w&$$&1975

1976

1977

1978

1979

1981fr^^^s^«^^^î^^^^^îi^

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Figure11

DredginginCorpusChristiInnerHarbor,1960-81

CD

E

E

oo

25 -

20 -

15

10 -

5 -

— 1973

— 1982

Figure 12

Cadmium in Sediment, August 20, 1973 vs. August 1982

4.5

4.0

( \3.5 i \

3.0

a>

<?.5a>

EJO

>»

ao

| 2.0

i \//// »/ i/ i/ i

lI973 / \

1.5

1.0

0.5

1982 / '

\/ ^Sn_ U.S. EPA Screening Level ^

ii illo

I 2 3 4 5 6 7 8 9 10 II 12 13 14 15

Stations

Figure 13

Mercury in Sediment, August 20, 1973 vs. August 1982

50-

2500 -

oi

Figure 14

Zinc in Sediment, August 20, 1973 vs. August 1982

oi10

5

4

U.S.EPAScreeningLevel

_c

V.CD

E3

_c

o"'c

Q>to_

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Figure15

ArsenicinSediment,August1982

12131415

S

E

om

500

400

300

200

100

789

Stations

10II

Figure16

BariuminSediment,August1982

12131415

25 -

20 -

sV.

E 15

E9

E

Oo

10

5

/ U.S. EPA Screening Level

0 »— ""l i i l I I i i I I i I 1 I

1 213456789 10 II

Stations

Figure 17

Cadmium in Sediment, August 1982

12 13 14 15

CJ1

50U.S.EPAScreeningLevel

40

cn_e

|30c

_

«Q.o.o

o

20

10

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12345678910II

Stations

Figure18

CopperinSediment,August1982

12131415

50

40

cn

£30

20-

10-

U.S.EPAScreeningLevelis100mg/kg

JLJI»IJIIII23456789

Stations

10II121314

Figure19

ChromiuminSediment,August1982

15

250

200

cn

^ 150E

_

c

•o"o<o_J

100

50U.S. EPA Screening Level j,***0^ ^^

0I i l \ —f i l 1 1 1 11 23456789 10 1

i

12

1

13

|

14

1

15

Stations

Figure 20

Lead in Sediment, August 1982

2.5-

2.0-

f1.5-

u_

2

1.0

0.5-

U.S.EPAScreening

Figure21

MercuryinSediment,August1982

cn

1000

800 -

_ev.

| 600«CO0)cocnco

2 400

200

n i i i i i i i i i i i i I I

1 2 34 5 6 7 8 9 10 II

Stations

Figure 22

Manganese in Sediment, August 1982

12 13 14 15

25(U.S.EPAScreeningLevel50mg/kg)

20

_c

cn

E15

£

•_eu

Z

10

5

i•iiiiiiiiiiI10*•••••••••••—

12345678910II12131415

Stations

Figure23

NickelinSediment,August1982

2.5

2.0

1.5

co

LO

0.5

J 1 1 1 I 1 1 I I I I 'III

I 2 3 4 5 6 7 8 9

Stations

10 II 12 13 14 15

Figure 24

Silver in Sediment, August 1982

2500 -

2000 - -

_c

v 1500E

_

^c

uc

N

1000

500

k*^^ U.S. EPA Screening Levelr\ r~~" • i i i i i i i I I i i i 1

1 2 34 56789 10 II

Stations

Figure 25

Zinc in Sediment, August 1982

12 13 14 15

cnco

2.5

cn

^2.0C»

E

a.

o

t

1.5

1.0

.5-

789

Stations

1012

Figure26

TotalPhosphorusinSediment,August1982

131415

CD•I-

200-

150-

cn

E•^

o

10

100

"o

S

Figure27

VolatileSolidsinSediment,August1982

oi

5000

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1000-

789

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10II12

Figure28

OilandGreaseinSediment,August1982

131415

APPENDIX

Historical Data for Stations 2, 6, 8 and 15

SurveyStation

Number S.M.S. No.

2 2431.05

6 2484.01

8 2484.02

15 2484.03

Selective Data Retrieval

Description

Corpus Christi Bay at Channel Marker 86

Corpus Christi Inner Harbor at Avery Turning Basin

Corpus Christi Inner Harbor at Navigation Blvd. Bridge

Corpus Christi Inner Harbor at Viola Turning Basin

- 66 -

CW0223 *** TEXAS DEPARTMENT OF HATER RESOURCESSTATEWIDE MONITORING NETWORK — SELECTIVE OAT* REPORT

PERIOD OF REPORT Cl/01/68 TO 07/01/62

• * • PA6E 1

OATE 03/06/641

BAYS AND ESTUARIESCCRPUS CHRISTI BAY

2481.0500 NEAR CORFtS CHRISTI SHIP CHANNEL MARKER 66DISTRICT 12 CC

SAMPLE CEPTF SCURCE

OATE T1*E (FT.! AGENCY

1C/24/73 1555 1.0 TDWR

10/24/73 16C0 10.0 TOfcR10/21/73 16C0 20.0 TDWR

10/24/73 16C0 30.0 To*R11/19/73 1420 1*0 TDkR

12/14/73 12C0 1.0 TDWR

12/14/73 12C0 10.0 TDWR

12/14/73 12t0 20.0 TDkR

12/14/73 12C0 30.C TOWR

Cl/16/74 1240 l.C TOWRCl/16/74 1240 10*0 TDWR

Cl/16/74 1240 20.0 TOWR

Cl/16/74 1240 30.0 TOWR

C4/24/74 1020 1.0 TDWR

C7/23/74 C920 1.0 TOWR

C7/23/74 C9 2C 40.0 TDWR

C8/C1/74 144C 1.0 TOWR

C8/C1/74 1440 10.0 TDWR

C8/C1/74 144C 20.0 TDWRCe/Cl/74 1440 3C.0 TOWR

C8/01/74 1440 40.0 TDWR10/29/74 10C0 1.0 TDWR

10/29/74 10C0 10.0 TOWR

10/29/74 10C0 20.0 TOWR

10/29/74 10 CO 30.0 TOWR10/29/74 10C0 40.0 TOWR

11/26/74 1120 1.0 TDWR11/26/74 1120 10.0 TOWR

11/26/74 U2C 15.0 TOWR

11/26/74 1130 20.0 TOWR

11/26/74 1120 30.0 TDWR11/26/74 1120 35.C TOWR

Cl/15/75 1425 1.0 TDWRC4/15/75 1120 WO TDkR

T4/15/75 1120 10.0 TDWR

C4/15/75 112C 20 .0 TOWR

C4/15/7S 1120 30.0 TDWRC4/15/75 1120 35 .0 TDWR

LAT / LONG 27 48 36 / C97 23 18CCUNTY NUECES US6S 6AGE 000000000

00300 00400 00010 31501 00680 00665 00620 C061C

DO | PH 1 WATER 1 TOT COLI 1 T CR6 C 1 PHOS-T 1 N03-N | NH3-N 11 | TEMP | MFIMENDO | C 1 P-WET I TOTAL 1 TOTAL 1

H6/L 1 SU 1 CENT I /100PL | M6/L 1 M6/L 1 M6/L 1 MG/L 1

8.90 e.soo 26.70 98.0* • 1440 •030 • 1C00

7.00 8.100 24.4Q3.30 8.000 23.902.40 7.900 23.907.90 8.30C 24.408.50 8.2Q0 18.90

7.40 8.020 17.50

6.10 7.950 17.205.80 7.92C 17.50

11.20 e.200 13.60 2.0 • 0390 •030 • 1C00

9.70 8.000 13.10

8.60 7*900 13.108.70 7.85C 13.107.20 8.2C0 24.70 18.0 • 0690 •030 .10005.50 8.200 29.50 27.0 7.00 • 1240 •070 • 2000

3.00 8.ISC 29.00 8.00 • 0490 •030 .1000

6.60 8.2S0 30.006.40 8.250 30.00

4.40 8.200 29.50

3.00 8.150 28.80

2.60 8.100 28.505.90 8.200 24.00 .0 10.00 • 0620 •030 • 1000

5*60 8.200 23.90

6.40 8.300 23.306.50 8.300 23.306.40 8.300 23.30

8.60 8.250 17.00

8.50 8.300 17.00

8.50 8.300 17.008.40 8.350 17.008.40 8.35C 17.008.30 8.350 17.00

9.50 8.200 13.80 • 0 7.00 .0750 •050 • 1000

7.20 21.50 2C.0 .900 • 3000

7.20 21.00

7.10

6.90

21.0021.00

Corpus Christi Inner Harbor Study

6.60 20.50 O-IJI lOQO

AN ASTERISK 1*1 CENOTES A MEASUREMENT THAT IS NOT WITHIN STANDARDS.

Survey Station No. 25.M.S. No. 2481.05

Corpus Christi Bay at Ship Channel Mkr. 86

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CU0223•*«TEXASDEPARTMENTOFWATERRESOURCESSTATEWIDEMONITORINGNETWORK—SELECTIVEDATAREPORT

PERIOCOFREPORT01/01/68TO07/01/82

PAGE6

OATE03/08/84

BAYSANOESTUARIESCORPUSCHRISTIBAY

2461.0500NEARCORPUSCHRISTISHIPCHANNELMARKER860ISTRIC112CCUNTYNUECESUS6SGAGE000000000LAT/LONG274836/C972318

0030C0040000010

DO1PH1WATER«AMFLEOEPTFSOURCEI1TEMP

OATETlfEIFT.IA6ENCYMG/L1SU1CENT

31501006800066500620C061CITOTCOLIITCRGCIPHOS-TIN03-N|NH3-NIMFINENDO|CIP-UCTITOTALITOTALI/100ML|M6/L|MG/LIMG/LIM6/L

AVERAGE......•.................6.9CEOMETRICMEAN

MAXIMUM•12.08.95MNIMUH.87.10NUMBERCFSArPlES177l7l

*DO|PH-III

M6/LISUI

STATIONSUMMARY-21.1

49.

30.510000.10.00.

17820SE6MENTSTANDARDS'WATERITOTCOLI

TEMP|MFIMENOOCEf|TI/100ML

EFFECTIVE0A1E:MAXIMUMMNIMUH.

1C/C1/6TDEPTH*1.0A6ENCV:TOWR

9.0C35.05.006.50

70.0

T.-9

15.0

4.024

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•280•010

28

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33

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36

ITORG'CI*Mw-S-T|HM3-3-NINH-3-*IICIP-UCTITOTALITOTALIIMG/LIM6/L|M6/LIMG/LI

I-UIJ223 * * • TEXAS DEPARTMENT OF WATER RESOURCE

STATEWIDE M0NIT0R1N6 NETWORK " SELECTIVE DATA REPORTPERIOO OF REPORT 01/01/66 TO 07/01/82

• * • PA6E 7

OATE 03/08/84

eAYS AND ESTUARIESCORPUS CHRISTI INNER HARBOR-US 181 BRIDGE TO VIOLA TURNING BASIN

2464.0100 IN AVERY 1LRNIN6 BASIN0ISTRIC1 12 COUNTY NUECES US6S GA6E OOOOOOOCO LAT / L0N6 27 49 13 / C97 25 44

SAf.FLE CEPTI- SCURCE

DATE TI*E (FT.) AGENCY

10/24/73 U2C l.C TDkR10/24/73 162C 10*0 TDkR

1C/24/73 163C 20.0 TDWR

1C/24/73 1620 30.0 TOWR11/19/73 15C0 1.0 TOWR12/14/73 1115 1.0 TDkR

12/14/73 1115 10.0 TDWR12/14/73 1115 2C0 TDkR

12/14/73 1115 30.0 TOWR

Cl/16/74 1320 1.0 TDWR

Cl/16/74 1320 10.0 TDkRCl/16/74 1320 20.0 TDWR

Cl/16/74 1320 30.0 TDWR

C2/21/74 1040 l.C TOWR

C2/21/74 10*0 35.0 TOWRT4/24/74 1CS0 1.0 TDkR

C7/12/74 1343 l.C TDkRC7/12/74 1343 10.0 TOWR

C7/12/7<| 1343 15.0 TokRC7/12/74 13«3 20.0 TDkR

C7/12/74 13*3 30.0 TDkRC7/12/74 1343 35.C TDkR

T7/12/74 1343 40.0 TDWR

C6/C1/74 1340 1.0 TOkR

C6/C1/74 1340 10.0 TDkR

re/ci/74 134C 20.0 TDWR

C6/C1/74 1340 30.0 TDkR

C6/C1/74 134o 40.0 TDWRC9/23/74 1020 1.0 TOkR

10/29/74 1025 1.0 TDkR1C/29/74 1C25 10.0 TDkR

1C/29/74 1025 15.0 TOkR

10/29/74 1025 20.0 TDWR

10/25/74 1025 30.0 TDWR

10/29/74 1025 3S.0 TOWR10/25/74 1025 40.0 TOkR

11/26/74 14C7 1.0 TDkR

11/26/74 1447 10.0 TOWR

00300 00400 00010 31501 00680 00665 00620 C061C

00 I PH | WATER 1 TOT CCLI 1 T CR6 C 1 PHOS-T | N03-N | NN3-N |

1 1 TEMP | MFINENOO | C 1 P-WET 1 TOTAL | TOTAL 1

MG/L 1 SU | CENT 1 /100ML 1 M6/L 1 M6/L 1 M6/L 1 M6/L 19.80 8.50C 26.70 52.0 • I860 •030 • 3C003.40 8.2SC 26.10

2.10 8.100 25.001.30 8.00C 25*006.80 8.25C 24.40

8.90 8.120 18.90

8.20 8.00C 18.30

6.6Q 7.900 18.90

4.70 7.800 18.SO

12.20 8.050 16.40 32.0 • 1310 • 160 • 3000

10.10 8.000 15.60

7.80 7.900 14.40

8.50 7.950 13.10

• 0850

• 0490•04 0

•040

.4000• 1000

7.00 6.15C 24.70 8.0 • 0950 •030 • 1000

6.00 8.ICC 29.60 51 .CO .1140 •030 .1000

5.00 8.050 29.40

4.40 8.050 29.20

4.00 8.050 26.90

3.60 8*100 28.603.20 8.100 28.303.30 e.ioo 28.10

8.40 8.25C 30.50

7.20 e.200 30.50

2*70 8.100 29.80

1.80 8.05C 29.50

• 80 8.000 29.007.00 7.600 26.00

5.20 e.ioc 24.50 • 0 11.00 .0980 •090 • 1C00

5.00 8.ISO 24*40

4.80 8.100 24.40

4.30 8.00C 24*40 Corpus Christi Inner Harbor Study3.50 8.05C 23.90

4.10 e.isc 23.30 Auqust 8-14, 19824.00 8.200 23.30

8*50 8.250 20.00 Survey Station No. 67.60 8.200 20.00 S.I4.5. No. 2484.01

Corpus Christi Inner Harbor atAvery Turning Basin

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TU0323 * * * TEXAS DEPARTMENT OF WATER RESOURCESSTATEWIDE M0NIT0RIN6 NETWORK — SELECTIVE DATA REPORT

PERIOC OF REPORT 01/01/68 TO 07/01/82

« * * PAGE 12DATE 03/08/84

BAYS AND ESTUARIES

CCRPUS CHRISTI INNER HARBOR-US 181 BRIDGE TO VIOLA TURNIN6 BASIN

2464.0100 IN AVERY TURNING BASINDIS1RICT 12 COUNTY NUECES USGS GA6E 000000000 LAT / LONG 27 49 13 / 097 25 44

00300 00400 00G10 31501 00680 00665 00620 C061C

DO 1 PH | WATER 1 TOT COLI 1 T CRG c 1 PHOS-T I N03-N | NH3-N |

SAMPLE CEPTI- SOURCE 1 1 TEMP 1 HFIMENDO | C 1 P-WET | TOWt 1 TOTAL 1

OATE TI*E IFT.1 AGENCY MG/L 1 SU | CENT | /100ML 1 M6/L 1 MG/t 1 MG/L 1 M€/L 1

C2/C3/81 1015 40.0 TOWR 8.30 7.80 13*90

C5/G5/61 0945 1*0 TDWR 4.60* 7.60 25.60 310.0 5.0 • 160 •350 • 510

C6/13/81 1025 1.0 TDWR 5.90 8.00 30.30 5.0 • 130 < •030 < .050

C8/13/81 1025 10.0 TDWR 5.40 8.00 30.20

C6/13/81 1C25 20.0 TDWR 4.70 8.00 30.1008/13/81 1025 30.0 TOWR 4.60 6.00 30.10

08/13^81 1025 40.0 TqWR 3.80 8.00 30*10

11/12/81 1228 1.0 TDWR 9.20 8.40 20*00 7.0 .140 < •030 • C80

11/12/81 1228 10.0 TDWR 7.80 8.40 20*50 --

11/12/81 1228 20.0 TDWR 7.00 8.350 21*00

11/12/81 12 28 30.0 TDyR 6.00 8.30 21*30

11/12/81 1228 40.0 TDWR 6.10 8.3C 21.30

02/10/82 1525 1.0 TDWR 10.30 8.450 11.50 8.0 • 220 •210 • 250

r2/lC/62 1525 lCaO TDWR 9.60 8.450 11.50

C2/10/82 1525 20.0 TDWR 9.60 8.50 11.50

C2/10/82 1525 30.0 TDWR 9.10 8.450 11*00

C2/10/82 1525 40.0 TOWR 8*30 8.3SC 10.00

C5/11/82 13C4 1.0 TDWR 7.10 e.ic 24*10 60.0 < 5.0 • 120 •260 • 320

C5/11/82 13C5 10.0 TDWR 6.80 8.1C 23.90

rs/n/82 13C5 20.0 TOWR 6.30 8.10 23*80

C5/11/82 13C5 30.0 TOWR 6.10 8.10 23*70C5/11/82 13CS 40.0 TDWR 8.10 23.70

AN ASTERISK 1*1 CEN01ES A MEASUREMENT THAT IS NOT WITHIN STANOARCS.

TWC22300*TEXASDEPARTMENTOFWATERRESOURCESSTATEWIOEMONITORINGNETWORK—SELECTIVEOATAREPORT

PERIOCOFREPORTCl/01/68TO07/01/82

PA6E13

OATE03/06/84

EAYSANDESTUARIESCORPUSCHRISTIINNERHARBOR-US181BRIDGETOVIOLATURNIN6BASIN

2484.0100INAVERYTURNINGBASIN

0ISTRIC112COUNTYNUECESUSGSGAGEOOOOOOOCO

3150100680

ITOTCCLI|TORGCIMFIHENDO|CI/lOO'LIMG/L

003000040000G10

COIPH|WATER

SAMPLECEPUSOURCE|1TEMP

DATETI*E(FT.)AGENCYM6/L1SU1CENT

STATIONSUMMARY-

AVERAGE..«••a.»«....a.«•*••••••6*621*1GEOMETRICMElN44.

MAXIMUM.•••••16.48.8030.5870.MINIMUM...87.5010.00.KUMeERCFSAFPLES••••20820S21025

—SE6MENTSTANDAROSDO|PH|WATERITOTCOLI

IITEMP|MFIHENOOMG/LISU|CENTI/I00PL

EFFECTIVECA1E:

fAXlfUMMNIMUH

1C/C1/67DEPTH:1.0AGENCY:TOWR9.0C35

5.006.50

IT

10V5

51.C

4.0

28

CR6r:<C

MG/L

LAT/LONG274913/C972544

0066500620C061C

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•040

35

P*405-TP-WET

MG/L

VI9-

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34

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NH1-NTOTAL

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PERIOCOFREPORT01/01/68TO07/01/82

•*0PAGE15OATE03/08/84

BAYSANDESTUARIES

CCRPUSCHRISTIINNERHARBOR-US181BRIDGETOVIOLATURNINGBASIN24*4.0200NEARNAVIGATIONBLVD.DRAWBRIOGE

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PERIODOFREPORT01/01/68TO07/01/82

•**PAGE21

OATE03/08/84

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BAYSANDESTUARIES

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.330

.01037

PHOS-TP-WET

M6/L

:v-..«*

1*80

•0141

#l.-3-*

TOTAL

M6/L

C0610

NH3-N|

TOTALIMG/L|

.58.

4*400

•030

44

NM/3-N

TOTAL

MG/L

Plllllliliiiii - Texas Water Development Board

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