Section 310.610 Monitoring and Analysis

Section 310

Section 310.610  Monitoring

and Analysis

a)         Except in the case of a non-significant categorical user, the

reports required in Sections 310.602(e), 310.604, 310.605, and 310.611 must contain

the results of sampling and analysis of the discharge, including the flow and

the nature and concentration, or production and mass if requested by the Control

Authority, of pollutants contained in the discharge that are limited by the

applicable pretreatment standards. This sampling and analysis may be performed

by the Control Authority instead of the industrial user. If the POTW performs

the required sampling and analysis instead of the industrial user, the user is

not required to submit the compliance certification required under Sections

310.602(f) and 310.604.  In addition, if the POTW itself collects all the

information required for the report, including flow data, the industrial user

is not required to submit the report.

b)         If sampling performed by an industrial user indicates a

violation, the user must notify the Control Authority within 24 hours after becoming

aware of the violation.  The user must also repeat the sampling and analysis

and submit the results of the repeat analysis to the Control Authority within

30 days after becoming aware of the violation.  If the Control Authority has

performed the sampling and analysis in lieu of the industrial user, the Control

Authority must perform the repeat sampling and analysis, unless it notifies the

industrial user of the violation and requires the industrial user to perform

the repeat analysis.  Resampling is not required if the following conditions

are fulfilled:

1)         The Control Authority performs sampling at the industrial user

at a frequency of at least once per month; or

2)         The Control Authority performs sampling at the user between

the time when the initial sampling was conducted and the time when the industrial

user or the Control Authority receives the results of this sampling

not required if the following conditions

are fulfilled:

1)         The Control Authority performs sampling at the industrial user

at a frequency of at least once per month; or

2)         The Control Authority performs sampling at the user between

the time when the initial sampling was conducted and the time when the industrial

user or the Control Authority receives the results of this sampling.

c)         The

reports required in Sections 310.602, 310.604, 310.605, and 310.611 must be

based upon data obtained through appropriate sampling and analysis performed

during the period covered by the report, which data are representative of

conditions occurring during the reporting period.  The Control Authority must require

the frequency of monitoring necessary to assess and assure compliance by

industrial users with applicable pretreatment standards and requirements.  Grab

samples must be used for pH, cyanide, total phenols, oil and grease, sulfide,

and volatile organic compounds.  For all other pollutants, 24-hour composite

samples must be obtained through flow-proportional composite sampling

techniques, unless time-proportional composite sampling or grab sampling is

authorized by the Control Authority.  If time-proportional composite sampling

or grab sampling is authorized by the Control Authority, the samples must be

representative of the discharge and the decision to allow the alternative

sampling must be documented in the industrial user file for that facility or facilities.

Using protocols (including appropriate preservation) specified in 40 CFR 136,

incorporated by reference in Section 310.107(b), and appropriate USEPA

guidance, multiple grab samples collected during a 24-hour period may be

composited prior to the analysis as follows:  for cyanide, total phenols, and

sulfides, the samples may be composited in the laboratory or in the field; for

volatile organics and oil and grease, the samples may be composited in the

laboratory

FR 136,

incorporated by reference in Section 310.107(b), and appropriate USEPA

guidance, multiple grab samples collected during a 24-hour period may be

composited prior to the analysis as follows:  for cyanide, total phenols, and

sulfides, the samples may be composited in the laboratory or in the field; for

volatile organics and oil and grease, the samples may be composited in the

laboratory.  Composite samples for other parameters unaffected by the

compositing procedures as documented in USEPA-approved methodologies may be

authorized by the Control Authority, as appropriate.

d)         For

sampling required in support of baseline monitoring and 90-day compliance

reports required in Sections 310.602 and 310.604, a minimum of four grab

samples must be used for pH, cyanide, total phenols, oil and grease, sulfide,

and volatile organic compounds for facilities for which historical sampling

data do not exist; for facilities for which historical sampling data are

available, the Control Authority may authorize a lower minimum.  For the

reports required by Sections 310.605 and 310.611, the Control Authority must

require the number of grab samples necessary to assess and assure compliance by

industrial users with applicable pretreatment standards and requirements.

e)         All analyses must be performed in accordance with procedures

referenced in 35 Ill. Adm. Code 307.1003, or with any other test procedure

approved by the Agency.  Sampling must be performed in accordance with the

techniques approved by the Agency.  If 35 Ill. Adm. Code 307.1003 does not

reference sampling or analytical techniques for the pollutants in question or

USEPA has determined as provided in Section 310.602 that sampling and

analytical techniques are inappropriate, sampling and analyses must be performed

using validated analytical methods or any other sampling and analytical

procedures including procedures approved by the POTW or other persons

. Code 307.1003 does not

reference sampling or analytical techniques for the pollutants in question or

USEPA has determined as provided in Section 310.602 that sampling and

analytical techniques are inappropriate, sampling and analyses must be performed

using validated analytical methods or any other sampling and analytical

procedures including procedures approved by the POTW or other persons.

f)         If an industrial user subject to the reporting requirement in

Section 310.605 monitors any regulated pollutant at the appropriate sampling

location more frequently than required by the Control Authority, using the

procedures prescribed in subsection (e), the results of this monitoring must be

included in the report.

BOARD NOTE:

Derived from 40 CFR 403.12(g) (2005), as amended at 70 Fed. Reg. 60134 (Oct.

14, 2005).