FEBRUARY 2000

SELF-MONITORING PROGRAM
PART B

NORTH SAN MATEO COUNTY SANITATION DISTRICT

 

I. DESCRIPTION OF SAMPLING STATIONS
A. Influent and Intake
 

Station

 Description
A-001

At any point in the treatment facility's headwork at which all waste tributary to the system is present, preceding any phase of treatment, and exclusive of any return flows or process side streams.
B. Effluent
 
Station
 Description
E-001
 At any point in the treatment facilities between the point of discharge and the point at which all waste from the treatment plant is present following dechlorination.

E-001D

 At any point in the treatment facilities after disinfection is complete and prior to dechlorination.
C. Receiving Waters
  Receiving water monitoring is conducted through a coordinated effort with the City of San Francisco at the following locations. Sampling will be conducted annually in the fall during the period when sediments are least disturbed and may show the highest concentrations of contaminants.
 

Station

Description

 

Latitude

Longitude

Fixed Sampling Locations
   

1

37 42 12.00

-122 34 31.20

2

37 42 37.80

-122 34 30.00

4

37 42 42.00

-122 35 42.00

6

37 40 00.00

-122 32 15.00

25

37 42 13.80

-122 34 30.00

28

37 41 54.00

-122 34 28.80

31

37 43 28.80

-122 34 01.80

Randomized Sampling Locations
   

R1

37 52 04.77

-122 38 28.60

R2

37 51 06.14

-122 36 00.87

R3

37 51 04.65

-122 38 50.77

R4

37 50 53.96

-122 40 45.11

R5

37 50 15.84

-122 37 12.27

R6

37 50 11.61

-122 35 41.45

R7

37 49 40.86

-122 39 18.05

R8

37 49 19.20

-122 41 25.50

R9

37 48 31.68

-122 37 29.76

R10

37 47 48.31

-122 29 57.44

R11

37 47 10.02

-122 30 46.18

R12

37 47 07.88

-122 36 57.88

R13

37 46 39.77

-122 34 22.04

R14

37 46 29.37

-122 38 38.38

R15

37 46 23.73

-122 32 08.26

R16

37 45 39.83

-122 37 04.52

R17

37 45 33.87

-122 38 55.98

R18

37 45 24.69

-122 33 44.13

R19

37 45 00.01

-122 39 56.01

R20

37 44 46.38

-122 35 55.51

R21

37 43 43.07

-122 31 11.61

R22

37 43 04.34

-122 38 42.51

R23

37 42 59.44

-122 32 47.41

R24

37 42 56.50

-122 34 15.08

R25

37 42 41.24

-122 36 28.29

R26

37 42 33.84

-122 31 08.82

R27

37 42 15.49

-122 34 55.24

R28

37 41 35.66

-122 32 11.82

R29

37 41 20.89

-122 36 06.47

R30

37 40 55.35

-122 33 29.05

R31

37 40 56.18

-122 37 43.15

R32

37 39 31.65

-122 33 41.41

R33

37 39 14.63

-122 32 04.75

R34

37 38 02.91

-122 32 27.99

R35

37 37 42.23

-122 36 40.08

R36

37 37 34.73

-122 33 53.51

R37

37 37 00.97

-122 36 55.75

R38

37 36 52.15

-122 35 28.81

R39

37 36 32.16

-122 32 01.35

R40

37 36 16.73

-122 33 03.03

D. Overflows and Bypasses
 
Station

Description
 
Ov-1 through OV-'n'
Bypass or overflows from manholes, pump stations, or collection systems.
 
REPORTING:
 Reports shall be submitted monthly and include date, time quantity and period of each overflow or bypass and measures taken or planned to prevent future occurrences.
 
II. SCHEDULE OF SAMPLING, ANALYSIS, AND OBSERVATIONS

The schedule of sampling, analysis, and observations shall be that given as Table I.

I, Lawrence P. Kolb, Assistant Executive Officer, hereby certify that the foregoing Self-Monitoring Program:

  1. Has been developed in accordance with the procedure set forth in the Regional Board's Resolution No. 73-16 in order to obtain data and document compliance with waste discharge requirements established in Regional Board Order No.

  2. Is effective on March 15, 2000.

  3. Maybe reviewed at any time subsequent to the effective date upon written notice from the Executive Officer or request from the dischargers and revisions will be ordered by the Executive Officer.

 
Lawrence P. Kolb
Assistant Executive Officer
Attachments:
Table I and footnotes
Part A, August 1993

 

Table I

SCHEDULE FOR SAMPLING, MEASUREMENTS, AND ANALYSIS (1)

Sampling Station

 

A-001

E-001

E-001D

All OV Station

All C Station

TYPE OF SAMPLE

Unit

C-24

G(2)

C-24(2)

Cont

G

C-24

   

Flow Rate

mgd

D

   

D

       

BOD, 5-day, 20OC

mg/l & kg/day

W

 

W

         

Chlorine Residual & Dosage (3)

mg/l & kg/day

 

2H or Cont.

2H or Cont.

   

Total Suspended Solids

mg/l & kg/day

2/W

 

2/W

         

Oil & Grease (4)

mg/l & kg/day

Q

Q

           

Settleable Matter

mg/l-hr

   

2/W

         

Turbidity

NTU

   

D

         

Fish Toxicity 96-hr. LC 50 (5)

Tu

   

2M

         

Ammonia Nitrogen & Un-ionized Ammonia (6)

mg/l & kg/day

   

2M

       

Y

pH (6)

pH units

 

D

2M

       

Y

Dissolved Oxygen (6)

mg/l & % saturation

 

D

2M

       

Y

Temperature (6)

OC

 

D

2M

       

Y

Coliform (Total or Fecal)

MPN/100 ml

       

W

   

Y

Salinity

ppt

             

Y

Sulfides

(If DO<5.0 mg/l) Total & Dissolved

mg/l

 

D

           

All Applicable Standard Observations

   

D

       

E

Y

Daily Rainfall

               

D

Dewatered Sludge

 

(7)

Arsenic

mg/l

   

Q (8)

         

Cadmium

mg/l

   

Q (8)

         

Chromium (Hexavalent)

mg/l

   

Q (8)

         

Chromium (Trivalent)

mg/l

   

Q (8)

         

Copper

mg/l

   

Q (8)

         

Lead

mg/l

   

Q (8)

         

Table I (Continued)

SCHEDULE FOR SAMPLING, MEASUREMENTS, AND ANALYSIS (1)

Sampling Station

 

A-001

E-001

E-001D

All OV Station

All C Station

TYPE OF SAMPLE

Unit

C-24

G(2)

C-24(2)

Cont

G

C-24

O

O

Mercury

mg/l

   

Q (8)

         

Nickel

mg/l

   

Q (8)

         

Selenium

mg/l

   

Q (8)

         

Silver

mg/l

   

Q (8)

         

Zinc

mg/l

   

Q (8)

         

Cyanide

mg/l

   

Q (8)

         

Phenolic Compounds (non-chlorinated)

mg/l

   

Q (8)

         

Chlorinated Phenolics

mg/l

   

Q (8)

         

Endosulfan

mg/l

   

Y (8)

         

Endrin

mg/l

   

Y (8)

         

HCH*

mg/l

   

Y (8)

         

Radioactivity

   

Y (8)

         

Acrolein

mg/l

   

Y (8)

         

Antimony

mg/l

   

Y (8)

         

Bis(2-chloroethoxy) methane

mg/l

   

Y (8)

         

Bis (2-chloroisopropyl) ether

mg/l

   

Y (8)

         

Chlorobenzene

mg/l

   

Y (8)

         

Di-n-butyl phthalate

mg/l

   

Y (8)

         

Dichlorobenzenes

mg/l

   

Y (8)

         

1,1-dichloroethylene

mg/l

   

Y (8)

         

Diethyl phthalate

mg/l

   

Y (8)

         

Dimethyl phthalate

mg/l

   

Y (8)

         

4,6-dinitro-2-methylphenol

mg/l

   

Y (8)

         

2,4-dinitrophenol

mg/l

   

Y (8)

         

Ethylbenzene

mg/l

   

Y (8)

         

Fluoranthene

mg/l

   

Y (8)

         

Hexachlorocyclopentadiene

mg/l

   

Y (8)

         

Isophorone

mg/l

   

Y (8)

         

Nitrobenzene

mg/l

   

Y (8)

         

Thallium

mg/l

   

Y (8)

         

Toluene

mg/l

   

Y (8)

         

1,1,2,2-tetrachloroethane

mg/l

   

Y (8)

         

Tributyltin

mg/l

   

Y (8)

         

1,1,1-trichloroethane

mg/l

   

Y (8)

         

1,1,2-trichloroethane

mg/l

   

Y (8)

         

 

Table I (Continued)

SCHEDULE FOR SAMPLING, MEASUREMENTS, AND ANALYSIS (1)

Sampling Station

 

A-001

E-001

E-001D

All OV Station

All C Station

TYPE OF SAMPLE

Unit

C-24

G(2)

C-24(2)

Cont

G

C-24

O

O

Acrylonitrile

mg/l

   

Y (8)

         

Aldrin

mg/l

   

Y (8)

         

Benzene

mg/l

   

Y (8)

         

Benzidine

mg/l

   

Y (8)

         

Beryllium

mg/l

   

Y (8)

         

Bis(2-chloroethyl) ether

mg/l

   

Y (8)

         

Bis(2-ethylhexyl) phthalate

mg/l

   

Y (8)

         

Carbon Tetrachloride

mg/l

   

Y (8)

         

Chlordane

mg/l

   

Y (8)

         

Chloroform

mg/l

   

Y (8)

         

DDT

mg/l

   

Y (8)

         

1,4-dichlorobenzene

   

Y (8)

         

3,3-dichlorobenzidine

mg/l

   

Y (8)

         

1,2-dichloroethane

mg/l

   

Y (8)

         

Dichloromethane

mg/l

   

Y (8)

         

1,3-dichloropropene

mg/l

   

Y (8)

         

Dieldrin

mg/l

   

Y (8)

         

2,4-dinitrotoluene

mg/l

   

Y (8)

         

1,2-diphenylhydrazine

mg/l

   

Y (8)

         

Halomethanes

mg/l

   

Y (8)

         

Heptachlor

mg/l

   

Y (8)

         

Hexachlorobenzene

mg/l

   

Y (8)

         

Hexachlorobutadiene

mg/l

   

Y (8)

         

Hexachloroethane

mg/l

   

Y (8)

         

N-nitrosodimethylamine

mg/l

   

Y (8)

         

N-nitrosodiphenylamine

mg/l

   

Y (8)

         

PAHs

mg/l

   

Y (8)

         

PCBs

mg/l

   

Y (8)

         

TCDD equivalents

mg/l

   

Y (8)

         

Tetrachloroethylene

mg/l

   

Y (8)

         

Toxaphene

mg/l

   

Y (8)

         

Trichloroethylene

mg/l

   

Y (8)

         

2,4,6-trichlorophenol

mg/l

   

Y (8)

         

Vinyl chloride

mg/l

   

Y (8)

         

LEGEND FOR TABLE

TYPE OF SAMPLES

TYPE OF STATIONS

G

=

Grab sample

A

=

Treatment facility influent stations

C-24

=

Composite sample 24-hr

E

=

Waste effluent stations

Cont.

=

Continuous sampling

C

=

Receiving water stations

O

=

Observation

P

=

Treatment facilities perimeter stations

OV

=

Overflows and bypasses

FREQUENCY OF SAMPLING

E

=

Each occurrence

2/H

=

Twice per hour

2H

=

Every 2 hours

H

=

Once each hour

2/W

=

2 days per week

2D

=

Every 2 days

D

=

Once each day

5/W

=

5 days per week

2W

=

Every 2 weeks

W

=

Once each week

2/M

=

2 days per month

2M

=

Every 2 months

M

=

Once each month

Y

=

Once a year

2/Y

=

Once in March and once in September

Cont.

=

Continuous

Q

=

Quarterly, once in March, June September and December



FOOTNOTES

  1. During any day when bypassing occurs from any treatment unit(s) in the plant or from the outfall, the monitoring program for the effluent and any near shore discharge shall include the following in addition to the above schedule for sampling, measurement and analyses:

    1. Composite sample for BOD and Total Suspended Solids (Influent and Effluent, for the duration of the bypass or 24 hours, whichever is shorter.)

    2. Grab samples for Total Coliform, Settleable Matter, Oil and Grease, and Chlorine Residual (continuous or every two hours.)

    3. Continuous monitoring of flow.

  2. Grab samples shall be taken on day(s) of composite sampling.

  3. Data shall be reported using forms provided or approved equivalent. Chlorine residual analyzers shall be calibrated against grab samples as frequently as necessary to maintain accurate control and reliable operation. If an effluent violation is detected, grab samples shall be taken every 30 minutes until compliance is achieved.

  4. In the event that sampling for oil and grease once every two weeks or less frequently shows an apparent violation of the waste discharge permit monthly average limitation (considering the result of one or two day’s sampling as a monthly average), then the sampling frequency shall be increased to weekly so that a true monthly average can be computed and compliance can be determined.

  5. Fish toxicity shall be determined using 96-hour static renewal fish bioassays with one of the following test species: three-spined stickleback, rainbow trout or fathead minnow.

  6. Dissolved oxygen, pH, and temperature shall be tested for on the same composite sample(s) used for the bioassay(s) at the start of the bioassay(s) and at intervals of 24, 48, 72, and 96 hours after starting the bioassay(s). Ammonia nitrogen and unionized ammonia shall be tested for on the same composite sample(s) used for the bioassay(s) at the start of the bioassay test(s). The method of calculating unionized ammonia shall be indicated.

  7. Daily records shall be kept of the quantity and solids contents of dewatered sludge disposed of and the location of disposal.

  8. If any samples are in violation of effluent limitations or in exceedence of the performance goals, sampling shall be increased for that parameter to weekly until compliance or the performance goal is demonstrated in two successive samples.