Utah Admin. Code R307-401-15 - Air Strippers and Soil Vapor Extraction Systems
Section R307-401-15 applies to remediation systems with the potential to generate air emissions, such as air strippers and soil vapor extraction (SVE) as defined in Section R307-401-2.
(1) The owner or operator of an air stripper
or SVE remediation system is exempt from the notice of intent and approval
order requirements of Sections
R307-401-5 through
R307-401-8 if the following
conditions are met:
(a) actual emissions of
volatile organic compounds from a given project are less than 5 tons per year;
and
(b) emission rates of hazardous
air pollutants are below their respective threshold values contained in
Subsection R307-410-5(1)(c)(i)(C).
(2) The owner or operator shall
submit documentation to the director that demonstrates the project meets the
exemption criteria in Subsection
R307-401-15(1).
Required documentation includes:
(a) project
summary, including location, system description, operational schedule, and
schedule for construction;
(b)
emission calculations and any laboratory sampling data used in calculations;
and
(c) plans and specifications
for the system and equipment.
(3) After beginning the soil remediation
project, the owner or operator shall conduct testing to demonstrate compliance
with the exemption levels in Subsections
R307-401-15(1)(1) and
(b). Monitoring and reporting shall be
conducted as follows:
(a) Emissions for air
strippers shall be based on the following:
(i)
influent and effluent water samples analyzed for volatile organic compounds and
hazardous air pollutants using the most recent version of USEPA Test Method
8260, Method 8021, or other EPA approved testing methods acceptable to the
director; and
(ii) design water
flow rate of the system or the water flow rates measured during the sample
period.
(b) Emissions
for SVE systems shall be based on the following:
(i) Air samples collected from a sample port
in the exhaust stack of the SVE system and analyzed for volatile organic
compounds and hazardous air pollutants using USEPA test method TO-15, or other
EPA approved testing methods acceptable to the director.
(ii) Design air flow rate of the system or
the air flow rates measured at the outlet of the SVE system during the sample
period. Flow rates should be measured and reported at actual
conditions.
(c) Within
one month of sampling, the owner or operator shall submit to the director the
sample results, estimated emissions of volatile organic compounds, and
estimated emission rates of hazardous air pollutants.
(d) Samples shall be collected at the
following frequencies or more frequently as determined necessary by the
director:
(i) no less than 28 days and no more
than 31 days, monthly, after startup for the first quarter;
(ii) quarterly for the remainder of the first
year; and
(iii) semi-annually
thereafter for the life of the project or as allowed in Subsection
R307-401-15(3)(f).
(e) If an SVE or air stripper
system is restarted after rehabilitation or an extended period of shutdown, the
owner or operator shall recommence the sampling schedule in Subsection
R307-415(3)(d), unless otherwise approved by the director.
(f) The owner or operator may request to
discontinue sampling after three years of operation. To discontinue sampling,
the owner or operator shall submit to the director a request to discontinue
monitoring.
(i) The request shall include
documentation demonstrating emissions have remained below the exemption levels
in Subsections R307-401-15(1)(a) and
(b) since startup of the system.
(ii) The request is subject to approval from
the director upon consultation with other regulatory agencies involved in the
project, such as Division of Environmental Response and Remediation or Division
of Waste Management and Radiation Control.
(4) The following control devices do not
require a notice of intent or approval order when used in relation to an air
stripper or soil vapor extraction system that is exempted under Section
R307-401-15:
(a) thermodestruction unit with a rated input
capacity of less than five million BTU per hour using no other auxiliary fuel
than natural gas or LPG; or
(b)
carbon adsorption unit.
Notes
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