### TITLE 7 NATURAL RESOURCES & 

### ENVIRONMENTAL CONTROL DELAWARE ADMINISTRATIVE CODE 1 1100 Air Quality Management Section 1125 Requirements for Preconstruction Review [08l11l2005

### XJ<1xxlxx 04/11/2010]

************Ilr* 3.0 Prevention of Significant Deterioration ofAir Quality 3.1 Definitions - For the purposes of3.0 ofthis regulation: "Major Stationary Source" means: Any ofthe following stationary sources of air pollutants which emits or has the potential to emit. 100 tons per year or more of any pollutant subjectto regulation underthe CM: fossil fuel-fired steam electric plants ofmore than 250 million British thermal units per hour heat input, coal cleaning plants (with thermal dryers). kraft pulp mills, portland cement plants, primaryzincsmelters, iron and steel mill plants, primaryaluminum ore reduction plants, primarycopper smelters, municipal incinerators capable ofcharging more than 250 tons of refuse perday, hydrofluoric, sulfuric, and nitricacid plants, petroleum refineries, lime plants, phosphate rock processing plants, coke oven batteries, sulfur recovery plants, carbon black plants (furnace process), primary lead smelters, fuel conversion plants, sintering plants, secondary metal production plants, chemical process plants, fossil fuel boilers (or combinations thereof) totaling morethan 250 million British thermal units per hour heat input, petroleum storage and transfer units with a total storage capacity exceeding 300,000 barrels, taconite ore processing plants, glass fiber processing plants, and charcoal production plants; Notwithstanding the stationary source size specified in the above paragraph, any stationarysource which emits, or has the potential to emit, 250tons per year or more of anyair pollutant subject to regulation underthe CM; or Any physical change that would occur at a stationary source not otherwise qualifying underthe preceding paragraph as a majorstationary source, ifthe changewould constitute a major stationary source by itself. A major stationary source that is major for volatile organic compounds or nitrogen oxides shall be considered majorfor ozone. ************* 3.7.7.1 The emissions increase ofthe pollutant from the new source or the netemissions increase of the pollutant from the modification would cause, in any area. air quality impacts less than the following amounts Carbon monoxide: 575 ug/m3

, eight-hour average; Nitrogen dioxide: 14 ug/m 3
, annual average; Total suspended particulate: 10 ug/m3

, 24-houraverage; Sulfur dioxide: 13 ug/m3

, 24-hour average; Ozone: (See Note 1)

### 2 TITLE 7 NATURAL RESOURCES & 

### ENVIRONMENTAL CONTROL DELAWARE ADMINISTRATIVE CODE

Lead: 0.1 ug/m3
, 24-hour average; Mercury: 0.25 ug/m3

, 24-hour average; Beryllium: 0.0005 ug/m3
, 24-hour average; Fluorides: 0.25 ug/m3
, 24-hour average; Vinyl chloride: 15 ug/m3
, 24-hour average; Total reduced sulfur: 10 ug/m3
, one-hour average; Hydrogen sulfide: 0.04 ug/m3
, one-hour average; Reduced sulfur compounds: 10 ug/m3
, one-houraverage; PM 10 particulate: 10 ug/m3

, 24-hour average [Note 1: No de minimus air quality level is provided for ozone. However, any net increase of 100 tons per year or more of volatile organic compounds Qr.illtrogen Qxides sUbject to PSD would be required to perform an ambient impact analysis including the gathering ofambientair quality data.]

************* 3.11.1.5 The owner or operator of a proposed stationary source or modification of volatile organic compounds or nitrogen oxides who satisfies all ofthe following conditions may provide post-approval monitoring data for ozone in lieu of providing preconstruction data as required under3.11.1 of this regulation. Condition 1: The new source is required to meet an emission limitation which specifies the lowest achievable emission rate for such source. Condition 2: The applicant must certify that all existing major sources owned or operated by the applicant (or any entity controlling, controlled by, or under common control with the applicant) in Delaware are in compliance with all applicable emission limitations and standards under the CAA (or are in compliance with an expeditious schedule approved bythe Department). Condition 3: Emission reductions ("offsets") from existing sources in the area of the proposed source (Whether or not under the same ownership) are required such that there will be reasonable progress toward attainment of the applicable NAAQ8. Only intrapollutant emission offsets will be acceptable (e.g., hydrocarbon increases may not be offset against 802 (reductions)). Condition 4: The emission offsets will provide a positive net air quality benefit in the affected area (see 40 CFR Part 51 App. 8). Atmospheric simulation modeling is not necessaryforvolatile organic compounds and NOx. FulfillmentofCondition 3 will be considered adequate to meet this condition for volatile organic compounds and NOx.