# General Organics

PHC_Q:
ppm wet weight; title of table is "CONCENTRATIONS OF TOTAL HYDROCARBONS IN SEDIMENT SAMPLES"


# Grain Size Data

METHOD_FI:
2 types of samples analyzed: A subsample of the composited homogenate (top 2-3 cm of sediment taken from collective grabs) was analyzed for grain distribution. Also small core samples taken from each of 3 grabs were used for determination of % silt/clay.

METHOD_CO:
SAND_PCT = 100 - FINES_SIL.  The percent sand calculation is: %sand = sand wt/(sand wt + silt-clay wt) * 100


COMMENTS_O:
Data derived from fig.21 of referenced source.  Figure consists of line graphs for each station showing % by weight of 12 classes of phi units.  Figure was gridded and values were estimated for each class at each station.

COMMENTS_2:
Values for this reference do not always total 100%.  Average total for all sites is 103%; range is 90-116%.  Classes: sand (-1)-0 to 4-5; silt: 4-5 to 8-9; clay: 8-9 to >10.


COMMENTS_O:
upper 3 inches of core samples analyzed using: Folk, Robert L., 1968. Petrology of sedimentary rocks. University of Tex. 182 p.


COMMENTS_O:
sand, silt, and clay all the same (41.52)


METHOD_CO:
SAND_PCT was interpreted (estimated) by F. Manheim from lithologic descriptions written by P. Connor


METHOD_FI:
small core samples taken from each of 3 grabs were used for determination of % silt/clay. (Grain size distribution dropped as parameter).


METHOD_FI:
A subsample of the composited homogenate (top 2-3 cm of sediment taken from collective grabs) was used to determine % silt/clay. (Grain size distribution not analyzed. No small cores collected).


# Inorganic

AG_Q:
DV >10 but occurs in proximity to NO canals where other elevated contaminants have been observed


AG_Q:
W; DV .04, Ag unreasonably low for high Zn value


AG_Q:
LW, W; DV >> 10; (low zinc) no apparent source of anomalous Ag


COMMENT1:
metals numbers are identical with MR9 - data entry error?


COMMENT1:
metals numbers are identical with CO9 - data entry error?


# Spec Org-B

BENZNE_Q:
wet weight; results are of composite samples


BENZNE_Q:
ND; wet weight; results are of composite samples


# Station data

ORIG_DB_NM:
EMAP-Estuaries Province Level Database, Louisianian Province 1991-1994

COM_ON_REF:
EMAP data in this database consists of samples with latitude between 29 and 30.5 N and longitude between 88.5 and 93 W extracted from LA province data.

COMPS_SCHM:
sample is a homogenate composed of the surficial 2 cm from several grabs (see methods field in grain size table for additional comments)

CMNTS_OTHR:
Toxicity Test Data, Water Quality Vertical Profile, Benthic Data, Fish/Invertebrate Data


COM_ON_REF:
EMAP data in this database was extracted from EPA'


GEN_CMMNTS:
REP-91,  No sediment sample was taken in the field at this station (QA_CODE = CH-N)


COM_ON_REF:
Also published in Overton, et al., 1984; and Chew & Swilley, 1987

SPECFC_LOC:
south coast, 400 yards north of Duncan Canal, Jefferson Parish

LOC_CMMNTS:
coords given in report wrong; lat/long used here derived from station description using process described in SSCONVERT.DOC


SPECFC_LOC:
south coast, 400 yards north-northwest of IHNC, Orleans Parish


SPECFC_LOC:
approximately 2.75 miles north-northwest of Jahncke Canal, Orleans Parish


SPECFC_LOC:
approximately 4.2 miles north of IHNC, Orleans parish


SPECFC_LOC:
approximately 1.5 miles north-northwest of London Ave. Canal, Orleans Parish


SPECFC_LOC:
approximately 1.8 miles north of 17th St. Canal, Jefferson Parish


SPECFC_LOC:
approximately 4.5 miles north northeast of Bonnabel Canal, Jefferson Parish


SPECFC_LOC:
approximately 2.9 miles north-northeast of Elmwood Canal, Jefferson Parish


SPECFC_LOC:
approximately 3.9 miles north-northwest of Duncan Canal, Jefferson Parish


SPECFC_LOC:
approximately 4.1 miles north of Parish Line Canal, Jefferson Parish


SPECFC_LOC:
south coast, 400 yards north of Parish Line Canal, Jefferson Parish


SPECFC_LOC:
south coast, 400 yards north of Suburban Canal, Jefferson Parish


SPECFC_LOC:
south coast, 400 yards north-northwest of 17th St. Canal, Jefferson Parish


SPECFC_LOC:
south coast, 400 yards north of Bayou St. John, Orleans Parish


SPECFC_LOC:
south coast, 400 yards north of London Ave. Canal, Orleans Parish


SPECFC_LOC:
approximately 1 mile north-northeast of 17th Street Canal


SPECFC_LOC:
approximately 4 miles south of Goose Point


SPECFC_LOC:
approximately 1 mile south-southwest of Bayou Bonfouca


SPECFC_LOC:
approximately 1 mile east of Pass Manchac


SPECFC_LOC:
approximately 1 mile south of Tchefuncte River


LOC_CMMNTS:
Coordinates drived from sketch map: probable error of +/- 1minute; (average of 26 samples)


LOC_CMMNTS:
Coordinates drived from sketch map: probable error of +/- 1minute; (average of 24 samples)


LOC_CMMNTS:
Coordinates drived from sketch map: probable error of +/- 1minute; (average of 25 samples)


LOC_CMMNTS:
Coordinates drived from sketch map: probable error of +/- 1minute; (average of 28 samples)


LOC_CMMNTS:
Coordinates drived from sketch map: probable error of +/- 1minute; (average of 23 samples)


LOC_CMMNTS:
'sample sites only approx'; Coords. from sketch map; coords given as centroids of squares on map, except stations along edge of lakes: in those cases coords are approx. centroid of irregular shape formed by square and shoreline

GEN_CMMNTS:
"The coring tube was pushed approximately 12 inches into the water bottom and retrieved.  The tube containg the sample was disconnected from the corer, capped on both ends, labled, and placed upright in racks."


LOC_CMMNTS:
station locations given in LORAN C coordinates and on sketch map.  conversion from LORAN C to lat/long gave erroneous locations, so lat/long estimated from sketch map

CMNTS_OTHR:
6 water microbiology parameters, 5 sediment microbiological parameters, benthic invertebrate analysis, 60 species of fish collected


SPECFC_LOC:
Shell Oil Co. Refinery LA0003522, WP0512 - Outfall 002 (point source)


SPECFC_LOC:
Shell Oil Co. Manufacturing LA0050962 - Outfall 001 (point source)


SPECFC_LOC:
approximately fifty yards downstream of the Shell Refinery (mixing zone)


SPECFC_LOC:
approximately 0.25 miles downstream of the Shell Refinery (impact zone)


SPECFC_LOC:
approximately one mile downstream of the Shell Refinery (impact zone)


SPECFC_LOC:
approximately 0.25 miles upstream of the confluence with Bayou La Branche (transition zone)


SPECFC_LOC:
approximately 0.50 miles upstream of the confluence with Bayou Trepagnier (reference station)


SPECFC_LOC:
at the Illinois Central Railroad crossing (recovery zone)


SPECFC_LOC:
Shell Oil Co. Refinery LA0003522, WP0512 - Outfall 004 (point source)


SPECFC_LOC:
approximately 0.5 miles downstream (north) of I-10  (reference station)


SPECFC_LOC:
approximately 0.25 miles northwest of the mouth of Bayou La Branche (reference station)


SPECFC_LOC:
approximately 0.25 miles above the outlet from Bayou Trepagnier (reference station)


LOC_CMMNTS:
relative coordinates - see file "GFCONVERT.DOC" for description of conversion process


LOC_CMMNTS:
the coordinates in fields 8-10 & 13-15 were e-mailed to AGM by G.Flowers on 4-28-97.  the coordinates in fields 7 & 12 were calculated by AGM from a faxed copy of figure 1 of Sarkar's thesis (see file"SSCONVERT.DOC" for full details)


LOC_CMMNTS:
calculated by AGM from a faxed copy of figure 1 of Sarkar's thesis (see file"SSCONVERT.DOC" for full details)


NAV_MODE:
the LORAN C coordinates in fields 8 & 13 were e-mailed to AGM by G.Flowers on 4-28-97.  the coordinates in fields 7 & 12 were calculated by AGM from a faxed copy of figure 1 of Sarkar's thesis (see file"SSCONVERT.DOC" for full details)

LOC_CMMNTS:
the LORAN coordinates in field 17 were e-mailed to AGM by G.Flowers on 4-28-97.  the coordinates in fields 7 & 12 were calculated by AGM from a faxed copy of figure 1 of Sarkar's thesis (see file"SSCONVERT.DOC" for full details)


ORIG_LOC:
calculated by AGM from a faxed copy of figure 1 of Sarkar's thesis (see file"SSCONVERT.DOC" for full details)


LOC_CMMNTS:
no specific information available on location


LOC_CMMNTS:
"...the entraces of....", estimated from NOAA chart


LOC_CMMNTS:
"...at the mouth of...", estimated from NOAA chart


LOC_CMMNTS:
"...at the outfalls of ...", estimated from NOAA chart


LOC_CMMNTS:
"...at the outfalls of ...", estimated from NOAA chart; canal assumed to be Metarie Outfall Canal


LOC_CMMNTS:
"0.00 mi from shore"; on sketch map; ["mi" must be nautical mi to agree with sketch map]; estimated from NOAA chart


LOC_CMMNTS:
"0.25 mi. from shore"; on sketch map; ["mi" must be nautical mi to agree with sketch map]; estimated from NOAA chart


LOC_CMMNTS:
"0.50 mi. from shore"; on sketch map; ["mi" must be nautical mi to agree with sketch map]; estimated from NOAA chart


LOC_CMMNTS:
"0.75 mi. from shore"; on sketch map; ["mi" must be nautical mi to agree with sketch map]; estimated from NOAA chart


LOC_CMMNTS:
"1.00 mi. from shore"; on sketch map; ["mi" must be nautical mi to agree with sketch map]; estimated from NOAA chart


LOC_CMMNTS:
"1.25 mi. from shore"; on sketch map; ["mi" must be nautical mi to agree with sketch map]; estimated from NOAA chart


LOC_CMMNTS:
"4.75 mi. from shore"; on sketch map; ["mi" must be nautical mi to agree with sketch map]; estimated from NOAA chart


LOC_CMMNTS:
"7.00 mi. from shore"; on sketch map; ["mi" must be nautical mi to agree with sketch map]; estimated from NOAA chart


LOC_CMMNTS:
"8.00 mi. from shore"; on sketch map; ["mi" must be nautical mi to agree with sketch map]; estimated from NOAA chart


LOC_CMMNTS:
"9.00 mi. from shore"; on sketch map; ["mi" must be nautical mi to agree with sketch map]; estimated from NOAA chart


LOC_CMMNTS:
sketch map: locations transfered to 7.5' topo and then calculated by program RULE2LL (see Sarkar, 1995 & SSCONVERT.DOC)


COMPS_SCHM:
"Three samples were taken at each location and homogenized by mixing using plastic utensils."

GEN_CMMNTS:
CaCO3 values suspect - same dozen #s keep showing up


GEN_CMMNTS:
CaCO3 values suspect - same dozen #s keep showing up; Grain sizes are in error (each one is 41.52) see fields 658 - 660 in "Grain Size Data" table


GEN_CMMNTS:
CaCO3 values suspect - same dozen #s keep showing up; See comment in field 89 (COMMENT1) in "Inorganic" table


GEN_CMMNTS:
CaCO3 values suspect - same dozen #s keep showing up; Grain sizes are in error (total over 100%)


DSCR_COLOR:
Very soft dark grayish brown liquid clay mud, with high degree of bioturbation; silty fine sand filled burrows; massive unit; shall fragments throughout unit (Rangia .5-3 cm)


GEN_CMMNTS:
Possible admixture of dredged material in upper horizons because of softness and massive texture; boundary to Pleistocen 449 cm.

DSCR_COLOR:
"B2" Soft medium-gray clay with sil and fine sand-filled burrows; massive bedding with occasional silt lenses and scattered Rangia. In situ shells > 1 cm; 2 cm sand-filled burrows (Unit B).


DSCR_COLOR:
V. soft dark gray silty clay-mud, bioturbated; liq.


DSCR_COLOR:
Clay, silty, soft dark gray mud, liquified unit, burrows throughout; some <1 cm Rangia fragments; rafted organics


DSCR_COLOR:
Shell, sandy, massive shell fragments & subangular, quartz sand; with poorly sorted mud, light gray; oyster frammgnerts and sharp contact


DSCR_COLOR:
Unit B.Shelly m. grained sand, subangular poorly sortred, with Rangia shells; large sand-filled burrow. Faint parallel laminations


DSCR_COLOR:
Unit C. Stiff olive gray silty clay with sand and silt-filled burrows. Oxidized organic matter increase with depth along with stiffness and decreased burrowing (Pleistocene).


DSCR_COLOR:
Clay, very soft, dark grayish; highly bioturbated; silty sand fillings of burrows; massive & deformed


DSCR_COLOR:
Clay7, soft gray with silty sand filled burrows; massive with in situ Rangia shells at 102 cm


DSCR_COLOR:
Very soft silty  clay with sand-filled burrows, liquefied unit (mud); sharp basal contact below


DSCR_COLOR:
[Unit "B"]Fine-med grained sand, subangular, poorly sorted qtz; Rangia shell 1-3 cm; faint horizonontal laminations at top of unit but defomred at base by burrowing and Rangia; sharp basal contact;


DSCR_COLOR:
Soft gray clay with silty sand filled burrows; interbedded laight and dark clay bands, laminations; sand-filled burrowsw near top of unit decrease with depth; siderite noduloe at 165 cm.


DSCR_COLOR:
Very  soft liquefied dark grayish brown clay mud; massive bedding; silty, sand-filled burrowes; sharp basal contact, some bioturbation; Rangia near base of unit


DSCR_COLOR:
Soft silty, fine sand with interbedded clay and clay clasts; high degree of deformation; shell sand lag 41 cm sharp basal contact; sands are sub-angular, poorly sorted qtz and shell frags. Faint laminations


DSCR_COLOR:
Soft medium gray clay with interbedded silty with occasional fine sand ; Light and dark clay bands; horizontal laminations


DSCR_COLOR:
Very soft liquefied dark graish brown clay mud; massive bedding with signs of horiz. Laminations at 45 cm burrows with Rangia at base oif layer (1-3 cm); rafted organics throughout5; sharp basal contact


DSCR_COLOR:
Unit B: soft silty clay with silty sand lenese and sand beds (1-5 cm); gray in olor with dark rafted organics at top of uinit; grain size increases with depth; subangular, poorly sorted .


DSCR_COLOR:
Mud, clayey, v. soft liquified dark grayish brown; massive medding and sharp bassal contact; sea shell frags at base, burrowing organisms


DSCR_COLOR:
Sand, silty, gray; with soft silty clay, gray, rafted organics, clay clasts and filled burrows


DSCR_COLOR:
Clay, soft silty, gray, with silty sand, as above


DSCR_COLOR:
Clay, soft, gray,  continues to total depth of 5.46 m. with occ shell, mottled organic layers;


DSCR_COLOR:
Very soft, liquid grayish brown clay-mud; massive bedding; small shell fragments; burrowing near sharp basal contact; rafted organics


DSCR_COLOR:
Soft silty clay, med. Gray, very deformed by burrowing and dewatering, rafted organics; clay clast near top of massive unit; shaprly inclined basal contact.


DSCR_COLOR:
V.silty, liquid clay, dark grayish brn, with scattered rangia; some silty sand-filled burrows toward base of unit;


DSCR_COLOR:
V. soft dark grayish-brown clay-mud, massive bedding, with sc. Shells & fragments; burrowing present; sharp basal contacts; increasing gfrain size with depth.


DSCR_COLOR:
V. soft dark grayish-brown clay-mud, massive bedding, with sc. Shells & fragments; burrowing present; sharp basal contacts; increasing gfrain size with depth; unit A.


DSCR_COLOR:
Fine subanguar sorted quartz sand; Rangia shells at top with rafted organics; silty sand-filled burrows


DSCR_COLOR:
Fine subanguar sorted quartz sand; Rangia shells layer at 40-51 cm ; burrowing from .72-1.52


DSCR_COLOR:
Fine subangular sorted quartz sand; With shell lag at top


DSCR_COLOR:
Very fine silty sand with laminated lag of (>2 cm) Rangia shell at top. Decrease in shell content with depth. Sharpo basal contact from silty fine sand to organic-rich clay; generally massive unit with occasional rafted organics.


DSCR_COLOR:
Medium-soft brown-gfray clay; generally horizontal laminations with fine silt. Deformation by dewatering and burrowing; organic-rich layer at 70-104 cm. Very small rafted organics throughout, but no sign of shell except single small Rangia at 134 cm; sign


DSCR_COLOR:
Clayey mud, highly liquid, massive becoming stiffer with depth; dredged


DSCR_COLOR:
Clay, very soft dark brown, with scattered sand & shell fragments, generally massive


DSCR_COLOR:
Clay with with interbedded shelly fine sand beds, rafted organic fragments, becoming tiffer with depth; burrowing increases;


DSCR_COLOR:
Unit "C" ; v. stiff olive gray clay with oxidized spots; heavily bioturbat with rooting near contacts


DSCR_COLOR:
Very soft silty mud with occasional fine sand lenses, light brown in color, laminated bysmall  sand  lenses; some shaell fragments in sand lenses


DSCR_COLOR:
Very soft mud, dark grayish brown with silty fine sand-filled burrow3s; Small Rangia shells (2 cm) throughout unit. Shell lag with fine  at 40-54 cm; massive unit with occ. Sand waves


DSCR_COLOR:
Very soft silty mud with occasional fine sandy lenses, light brown, laminated by small sand lenses <1 cm especially around 75 cm; very small shel frags only found in sand layers. Sand-filleed burrow at 16 and 30 cm.; occasional burrowing; transitional bas


DSCR_COLOR:
Soft light brown gray clay with Rangia shell fragments and lags; becomes stilty and sandy with depth; two sh ell lags at 119,  and 134 cm; heavy burrowing; no sshell found 217-455 cm;


LOC_CMMNTS:
estimated lat/long/sand% from Dunbar's map -- LH and FM 5/9/98


# Consolidated

SPECFC_LOC:
south coast, 400 yards north of Duncan Canal, Jefferson Parish


SPECFC_LOC:
south coast, 400 yards north-northwest of IHNC, Orleans Parish


SPECFC_LOC:
approximately 2.75 miles north-northwest of Jahncke Canal, Orleans Parish


SPECFC_LOC:
approximately 4.2 miles north of IHNC, Orleans parish


SPECFC_LOC:
approximately 1.5 miles north-northwest of London Ave. Canal, Orleans Parish


SPECFC_LOC:
approximately 1.8 miles north of 17th St. Canal, Jefferson Parish


SPECFC_LOC:
approximately 4.5 miles north northeast of Bonnabel Canal, Jefferson Parish


SPECFC_LOC:
approximately 2.9 miles north-northeast of Elmwood Canal, Jefferson Parish


SPECFC_LOC:
approximately 3.9 miles north-northwest of Duncan Canal, Jefferson Parish


SPECFC_LOC:
approximately 4.1 miles north of Parish Line Canal, Jefferson Parish


SPECFC_LOC:
south coast, 400 yards north of Parish Line Canal, Jefferson Parish


SPECFC_LOC:
south coast, 400 yards north of Suburban Canal, Jefferson Parish


SPECFC_LOC:
south coast, 400 yards north-northwest of 17th St. Canal, Jefferson Parish


SPECFC_LOC:
south coast, 400 yards north of Bayou St. John, Orleans Parish


AG_Q:
DV >10 but occurs in proximity to NO canals where other elevated contaminants have been observed


SPECFC_LOC:
south coast, 400 yards north of London Ave. Canal, Orleans Parish


SPECFC_LOC:
approximately 1 mile north-northeast of 17th Street Canal


SPECFC_LOC:
approximately 4 miles south of Goose Point


SPECFC_LOC:
approximately 1 mile south-southwest of Bayou Bonfouca


SPECFC_LOC:
approximately 1 mile east of Pass Manchac


SPECFC_LOC:
approximately 1 mile south of Tchefuncte River


AG_Q:
W; DV .04, Ag unreasonably low for high Zn value


SPECFC_LOC:
Shell Oil Co. Refinery LA0003522, WP0512 - Outfall 002 (point source)


SPECFC_LOC:
Shell Oil Co. Manufacturing LA0050962 - Outfall 001 (point source)


SPECFC_LOC:
approximately fifty yards downstream of the Shell Refinery (mixing zone)


SPECFC_LOC:
approximately 0.25 miles downstream of the Shell Refinery (impact zone)


SPECFC_LOC:
approximately one mile downstream of the Shell Refinery (impact zone)


SPECFC_LOC:
approximately 0.25 miles upstream of the confluence with Bayou La Branche (transition zone)


SPECFC_LOC:
approximately 0.50 miles upstream of the confluence with Bayou Trepagnier (reference station)


SPECFC_LOC:
at the Illinois Central Railroad crossing (recovery zone)


SPECFC_LOC:
Shell Oil Co. Refinery LA0003522, WP0512 - Outfall 004 (point source)


SPECFC_LOC:
approximately 0.5 miles downstream (north) of I-10  (reference station)


SPECFC_LOC:
approximately 0.25 miles northwest of the mouth of Bayou La Branche (reference station)


SPECFC_LOC:
approximately 0.25 miles above the outlet from Bayou Trepagnier (reference station)


AG_Q:
LW, W; DV >> 10; (low zinc) no apparent source of anomalous Ag


