Outfall Reconnaissance & Illicit Discharge Work Sheet
Site Information
Outfall ID:
Date:
Time:
Latitude (N):
Longitude (W):
Investigators:
Dominant Watershed Land Use ( 1=Primary use, 2=Secondary use ):
 Suburban Residential  Industrial  Open Space  Urban Residential
 Commercial  Unknown  Other:
Receiving Stream:
Access Instructions:
Outfall/Conveyance
Type
Material
 Closed Pipe  Box Culvert
 Concrete  Poly
Dimensions:
 Steel
 Other
 Open Channel
Width: Top______ Bottom _____
Shape
 Single  Double
 Triple
 Earthen  Rip-rap  Rectangle  Parabolic
 Concrete
 Trapezoid
 Manhole  Catch Basin  Natural Flowage/ Creek  Other:
Flow Estimation
Flow Present:  Yes  No
Standing Water Present:  Yes
 No
Estimated Flow:
Amount:  Trickle  Moderate  Substantial
Width At Water Surface:
Depth Of Water:
Approximate Flow Velocity:
Calculated Flow Rate:
Environmental Conditions
Cloud Cover (%):
Air Temp. (°C):
Wind:
Last Rain Event:  <48 Hours  48 to 72 Hours  >72 Hours
Analytical Results
Samples Collected From:  Flow  Pool Date:
Time:
Parameter
Results
Parameter
Water Temperature
C Color
pH
s.u. Copper
Conductivity
µmhos/cm Detergents
Dissolved Oxygen
mg/l Fluoride
Dissolved Oxygen
% Sat. Hardness
Ammonia
mg/l Phenols
Chlorine
mg/l Turbidity
Were Samples Collected For The Laboratory:  Yes  No
Amount:
Initials:
Results
Color Units
mg/l
mg/l
mg/l
mg/l
mg/l
NTU
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Outfall Physical Indicators (F=Flow, P=Pool)
Indicator
Odor
Color
Particles
Floatables
Algae &
Bacteria
Biology
Outfall
Damage
Description
 None
 Sewage
 Rancid/sour  Oil/Gas
 Sulfide
 Chlorine
 Solvents
 Other
Relative Severity
 Faint
 Easily
Detected
 Noticeable
from a distance
 Clear
 Gray
 Faint
 Clearly
 Clearly
 Green
 Red
Color In
Visible In
Visible In
Sample
 Brown  Yellow
Sample Bottle Outfall Flow
Bottle
 Orange  Other
 None
 Fine
 Slight
 Moderate
 Heavy
 Medium  Large
 None  Sewage  Oil
 Foam  Litter
 Slight
 Moderate
 Heavy
 Other:
 None
 Green
 Slight
 Moderate
 Excessive
 Brown
 Orange
 None  Insects  Mollusks  Amphibians  Reptiles  Fish
 Mosquito Larvae Comments:
Describe:
 Normal
 Apparent Damage
Illicit Discharge Concerns (Non-Stormwater Flow Indicators)
 Not Obvious
 Possible Illicit Discharge
 Obvious Illicit Discharge
Comments:
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