State and Local Air Monitoring Stations (SLAMS)

[Title 40 CFR C]
[Code of Federal Regulations (annual edition) - July 1, 2002 Edition]
[Title 40 - PROTECTION OF ENVIRONMENT]
[Chapter I - ENVIRONMENTAL PROTECTION AGENCY]
[Subchapter C - AIR PROGRAMS (CONTINUED)]
[Part 58 - AMBIENT AIR QUALITY SURVEILLANCE]
[Subpart C - State and Local Air Monitoring Stations (SLAMS)]
[From the U.S. Government Printing Office]

40PROTECTION OF ENVIRONMENT52002-07-012002-07-01falseState and Local Air Monitoring Stations (SLAMS)CSubpart CPROTECTION OF ENVIRONMENTENVIRONMENTAL PROTECTION AGENCYAIR PROGRAMS (CONTINUED)AMBIENT AIR QUALITY SURVEILLANCE
Subpart C--State and Local Air Monitoring Stations (SLAMS)

Sec. 58.20 Air quality surveillance: plan content.

By January 1, 1980, the State shall adopt and submit to the
Administrator a revision to the plan which will:
(a) Provide for the establishment of an air quality surveillance
system that consists of a network of monitoring stations designated as
State and Local Air Monitoring Stations (SLAMS) which measure ambient
concentrations of those pollutants for which standards have been
established in part 50 of this chapter. SLAMS (including NAMS)
designated as PAMS will also obtain ambient concentrations of speciated
VOC and NOX, and meteorological measurements. PAMS may
therefore be located at existing SLAMS or NAMS sites when appropriate.
(b) Provide for meeting the requirements of appendices A, C, D, and
E to this part.
(c) Provide for the operation of at least one SLAMS per criteria
pollutant except Pb during any stage of an air pollution episode as
defined in the plan.
(d) Provide for the review of the air quality surveillance system on
an annual basis to determine if the system meets the monitoring
objectives defined in appendix D of this part. Such

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review must identify needed modifications to the network such as
termination or relocation of unnecessary stations or establishment of
new stations that are necessary. For PM2.5, the review must
identify needed changes to core SLAMS, monitoring planning areas, the
chosen community monitoring approach including optional community
monitoring zones, SLAMS, or SPMs.
(e) Provide for having a SLAMS network description available for
public inspection and submission to the Administrator upon request. The
network description must be available at the time of plan revision
submittal and must contain the following information for each SLAMS:
(1) The AIRS site identification form for existing stations.
(2) The proposed location for scheduled stations.
(3) The sampling and analysis method.
(4) The operating schedule.
(5) The monitoring objective and spatial scale of representativeness
as defined in appendix D to this part.
(6) A schedule for:
(i) Locating, placing into operation, and making available the AIRS
site identification form for each SLAMS which is not located and
operating at the time of plan revision submittal,
(ii) Implementing quality assurance procedures of appendix A to this
part for each SLAMS for which such procedures are not implemented at the
time of plan revision submittal, and
(iii) Resiting each SLAMS which does not meet the requirements of
appendix E to this part at the time of plan revision submittal.
(f) Provide for having a PM monitoring network description available
for public inspection which must provide for monitoring planning areas,
and the community monitoring approach involving core monitors and
optional community monitoring zones for PM2.5. The PM
monitoring network description for PM10 and PM2.5
must be submitted to the Regional Administrator for approval by July 1,
1998, and must contain the following information for each PM SLAMS and
PM2.5 SPM:
(1) The AIRS site identification form for existing stations.
(2) The proposed location for scheduled stations.
(3) The sampling and analysis method.
(4) The operating schedule.
(5) The monitoring objective, spatial scale of representativeness,
and additionally for PM2.5, the monitoring planning area,
optional community monitoring zone, and the site code designation to
identify which site will be identified as core SLAMS; and SLAMS or
population-oriented SPMs, if any, that are microscale or middle scale in
their representativeness as defined in appendix D of this part.
(6) A schedule for:
(i) Locating, placing into operation, and making available the AIRS
site identification form for each SLAMS which is not located and
operating at the time of plan revision submittal.
(ii) Implementing quality assurance procedures of appendix A of this
part for each SLAMS for which such procedures are not implemented at the
time of plan revision submittal.
(iii) Resiting each SLAMS which does not meet the requirements of
appendix E of this part at the time of plan revision submittal.
(g) Provide for having a list of all PM2.5 monitoring
locations including SLAMS, NAMS, PAMS and population-oriented SPMs, that
are included in the State's PM monitoring network description and are
intended for comparison to the NAAQS, available for public inspection.
(h) Within 9 months after;
(1) February 12, 1993; or
(2) Date of redesignation or reclassification of any existing
O3 nonattainment area to serious, severe, or extreme; or
(3) The designation of a new area and classification to serious,
severe, or extreme, affected States shall adopt and submit a plan
revision to the Administrator.
(i) The plan revision will provide for the establishment and
maintenance of PAMS. Each PAMS site will provide for the monitoring of
ambient concentrations of criteria pollutants (O3,
NO2), and non-criteria pollutants (NOX, NO, and
speciated VOC) as stipulated in section 4.2 of appendix D, and
meteorological measurements. The PAMS

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network is part of the SLAMS network, and the plan provisions in
paragraphs (a) through (h) of this section will apply to the revision.
Since NAMS sites are also part of the SLAMS network, some PAMS sites may
be coincident with NAMS sites and may be designated as both PAMS and
NAMS.

[44 FR 27571, May 10, 1979, as amended at 46 FR 44164, Sept. 3, 1981; 52
FR 24740, July 1, 1987; 58 FR 8467, Feb. 12, 1993; 59 FR 41628, Aug. 12,
1994; 62 FR 38832, July 18, 1997]

Sec. 58.21 SLAMS network design.

The design criteria for SLAMS contained in appendix D to this part
must be used in designing the SLAMS network. The State shall consult
with the Regional Administrator during the network design process. The
final network design will be subject to the approval of the Regional
Administrator.

Sec. 58.22 SLAMS methodology.

Each SLAMS must meet the monitoring methodology requirements of
appendix C to this part at the time the station is put into operation as
a SLAMS.

Sec. 58.23 Monitoring network completion.

With the exception of the PM10 monitoring networks that
shall be in place by March 16, 1998 and with the exception of the
PM2.5 monitoring networks as described in paragraph (c) of
this section:
(a) Each station in the SLAMS network must be in operation, be sited
in accordance with the criteria in appendix E to this part, and be
located as described on the station's AIRS site identification form, and
(b) The quality assurance requirements of appendix A to this part
must be fully implemented.
(c) Each PM2.5 station in the SLAMS network must be in
operation in accordance with the minimum requirements of appendix D of
this part, be sited in accordance with the criteria in appendix E of
this part, and be located as described on the station's AIRS site
identification form, according to the following schedule:
(1) Within 1 year after September 16, 1997, at least one required
core PM2.5 SLAMS site in each MSA with population greater
than 500,000, plus one site in each PAMS area, (plus at least two
additional SLAMS sites per State) must be in operation.
(2) Within 2 years after September 16, 1997, all other required
SLAMS, including all required core SLAMS, required regional background
and regional transport SLAMS, continuous PM monitors in areas with
greater than 1 million population, and all additional required
PM2.5 SLAMS must be in operation.
(3) Within 3 years after September 16, 1997, all additional sites
(e.g., sites classified as SLAMS/SPM to complete the mature network)
must be in operation.

[44 FR 27571, May 10, 1979, as amended at 52 FR 24740, July 1, 1987; 59
FR 41628, Aug. 12, 1994; 62 FR 38832, July 18, 1997]

Sec. 58.24 [Reserved]

Sec. 58.25 System modification.

The State shall annually develop and implement a schedule to modify
the ambient air quality monitoring network to eliminate any unnecessary
stations or to correct any inadequacies indicated by the result of the
annual review required by Sec. 58.20(d). The State shall consult with
the Regional Administrator during the development of the schedule to
modify the monitoring program. The final schedule and modifications will
be subject to the approval of the Regional Administrator. Nothing in
this section will preclude the State, with the approval of the Regional
Administrator, from making modifications to the SLAMS network for
reasons other than those resulting from the annual review.

Sec. 58.26 Annual State air monitoring report.

(a) The State shall submit to the Administrator (through the
appropriate Regional Office) an annual summary report of all the ambient
air quality monitoring data from all monitoring stations designated
State and Local Air Monitoring Stations (SLAMS). The annual report must
be submitted by July 1 of each year for data collected from January 1 to
December 31 of the previous year.

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(b) The SLAMS annual data summary report must contain:
(1) The information specified in appendix F,
(2) The location, date, pollution source, and duration of each
incident of air pollution during which ambient levels of a pollutant
reached or exceeded the level specified by Sec. 51.16(a) of this chapter
as a level which could cause significant harm to the health of persons.
(c) The senior air pollution control officer in the State or his
designee shall certify that the annual summary report is accurate to the
best of his knowledge.
(d) For PM monitoring and data--
(1) The State shall submit a summary to the appropriate Regional
Office (for SLAMS) or Administrator (through the Regional Office) (for
NAMS) that details proposed changes to the PM Monitoring Network
Description and to be in accordance with the annual network review
requirements in Sec. 58.25. This shall discuss the existing PM networks,
including modifications to the number, size or boundaries of monitoring
planning areas and optional community monitoring zones; number and
location of PM10 and PM2.5 SLAMS; number and
location of core PM2.5 SLAMS; alternative sampling
frequencies proposed for PM2.5 SLAMS (including core
PM2.5 SLAMS and PM2.5 NAMS), core PM2.5
SLAMS to be designated PM2.5 NAMS; and PM10 and
PM2.5 SLAMS to be designated PM10 and
PM2.5 NAMS respectively.
(2) The State shall submit an annual summary to the appropriate
Regional Office of all the ambient air quality monitoring PM data from
all special purpose monitors that are described in the State's PM
monitoring network description and are intended for SIP purposes. These
include those population-oriented SPMs that are eligible for comparison
to the PM2.5 NAAQS. The State shall certify the data in
accordance with paragraph (c) of this section.
(e) The Annual State Air Monitoring Report shall be submitted to the
Regional Administrator by July 1 or by an alternative annual date to be
negotiated between the State and Regional Administrator. The Region
shall provide review and approval/disapproval within 60 days. After 3
years following September 16, 1997, the schedule for submitting the
required annual revised PM2.5 monitoring network description
may be altered based on a new schedule determined by the Regional
Administrator. States may submit an alternative PM monitoring network
description in which it requests exemptions from specific required
elements of the network design (e.g., required number of core sites,
other SLAMS, sampling frequency, etc.). After 3 years following
September 16, 1997 or once a monitoring area has been determined to
violate the NAAQS, then changes to an MPA monitoring network affecting
the violating locations shall require public review and notification.

[44 FR 27571, May 10, 1979, as amended at 51 FR 9586, Mar. 19, 1986; 62
FR 38833, July 18, 1997; 63 FR 7714, Feb. 17, 1998]

Sec. 58.27 Compliance date for air quality data reporting.

The annual air quality data reporting requirements of Sec. 58.26
apply to data collected after December 31, 1980. Data collected before
January 1, 1981, must be reported under the reporting procedures in
effect before the effective date of subpart C of this part.

Sec. 58.28 SLAMS data submittal.

The State shall submit all of the SLAMS data according to the same
data submittal requirements as defined for NAMS in section 58.35. The
State shall also submit any portion or all of the SLAMS data to the
appropriate Regional Administrator upon request.

[59 FR 41628, Aug. 12, 1994]