line Chro- 30 210 25 to less than 50 200 39 46 53 62 75 to less than 100 390 the property line of the surface dis- likely to adversely affect a threatened posal site shall be determined. or endangered species listed under sec(ii) The concentration of each pollut- tion 4 of the Endangered Species Act or ant listed in Table 2 of $ 503.23 in the its designated critical habitat. sewage sludge shall not exceed the con- (b) An active sewage sludge unit shall centration in Table 2 of 8 503.23 that not restrict the flow of a base flood. corresponds to the actual distance in (c) When a surface disposal site is lo$ 503.23(a)(2)(i). cated in a seismic impact zone, an ac tive sewage sludge unit shall be deTABLE 2 OF $ 503.23—POLLUTANT CONCENTRA- signed to withstand the maximum reTIONS-ACTIVE SEWAGE SLUDGE UNIT WITH corded horizontal ground level accelOUT A LINER AND LEACHATE COLLECTION eration. SYSTEM THAT HAS A UNIT BOUNDARY TO (d) An active sewage sludge unit shall PROPERTY LINE DISTANCE LESS THAN 150 be located 60 meters or more from a METERS fault that has displacement in HoloUnit boundary to property Pollutant concentration' cene time, unless otherwise specified by the permitting authority. Arsenic Nickel (e) An active sewage sludge unit shall Distance (meters) (mg/kg) (mg/kg) not be located in an unstable area. (f) An active sewage sludge unit shall O to less than 25 34 240 not be located in a wetland, except as 50 to less than 75 270 provided in a permit issued pursuant to 320 section 402 or 404 of the CWA. 100 to less than 125 125 to less than 150 450 (g)(1) Run-off from an active sewage sludge unit shall be collected and shall Dry weight basis. be disposed in accordance with Na(b) Active sewage sludge unit without tional Pollutant Discharge Elimination a liner and leachate collection sys- System permit requirements and any tem-site-specific limits. other applicable requirements. (1) At the time of permit application, (2) The run-off collection system for the owner/operator of a surface dis- an active sewage sludge unit shall have posal site may request site-specific pol- the capacity to handle run-off from a lutant limits accordance with 24-hour, 25-year storm event. $ 503.23(b)(2) for an active sewage sludge (h) The leachate collection system unit without a liner and leachate col for an active sewage sludge unit that lection system when the existing val- has a liner and leachate collection sysues for site parameters specified by the tem shall be operated and maintained permitting authority are different from during the period the sewage sludge the values for those parameters used to unit is active and for three years after develop the pollutant limits in Table 1 the sewage sludge unit closes. of $503.23 and when the permitting au- (i) Leachate from an active sewage thority determines that site-specific sludge unit that has a liner and leachpollutant limits are appropriate for the ate collection system shall be collected active sewage sludge unit. and shall be disposed in accordance (2) The concentration of each pollut- with the applicable requirements durant listed in Table 1 of $ 503.23 in sew- ing the period the sewage sludge unit is age sludge placed on an active sewage active and for three years after the sludge unit without a liner and leach sewage sludge unit closes. ate collection system shall not exceed (j)(1) When a cover is placed on an aceither the concentration for the pollut- tive sewage sludge unit, the concentraant determined during a site-specific tion of methane gas in air in any strucassessment, as specified by the permit- ture within the surface disposal site ting authority, or the existing con- shall not exceed 25 percent of the lower centration of the pollutant in the sew- explosive limit for methane gas during age sludge, whichever is lower. the period that the sewage sludge unit is active and the concentration of $503.24 Management practices. methane gas in air at the property line (a) Sewage sludge shall not be placed of the surface disposal site shall not exon an active sewage sludge unit if it is ceed the lower explosive limit for in methane gas during the period that the (2) Results of a ground-water monisewage sludge unit is active. toring program developed by a quali(2) When a final cover is placed on a fied ground-water scientist or a certifisewage sludge unit at closure, the con- cation by a qualified ground-water scicentration of methane gas in air in any entist shall be used to demonstrate structure within the surface disposal that sewage sludge placed on an active site shall not exceed 25 percent of the sewage sludge unit does not contamilower explosive limit for methane gas nate an aquifer. for three years after the sewage sludge unit closes and the concentration of 8 503.25 Operational standards-pathomethane gas in air at the property line gens and vector attraction reducof the surface disposal site shall not ex tion. ceed the lower explosive limit for (a) Pathogens-sewage sludge (other methane gas for three years after the than domestic septage). The Class A sewage sludge unit closes, unless other pathogens requirements in 8 503.32(a) or wise specified by the permitting au- one of the Class B pathogen requirethority. ments in $503.32 (b)(2) through (b)(4) (k) A food crop, a feed crop, or a fiber shall be met when sewage sludge is crop shall not be grown on an active placed on an active sewage sludge unit, sewage sludge unit, unless the owner/ unless the vector attraction reduction operator of the surface disposal site requirement in $503.33(b)(11) is met. demonstrates to the permitting au (b) Vector attraction reduction-sewage thority that through management sludge (other than domestic septage). One practices public health and the envi of the vector attraction reduction reronment are protected from any rea quirements in $503.33 (b)(1) through sonably anticipated adverse effects of (b)(11) shall be met when sewage sludge pollutants in sewage sludge when crops is placed on an active sewage sludge are grown. unit. (1) Animals shall not be grazed on an (c) Vector attraction reduction-domesactive sewage sludge unit, unless the owner/operator of the surface disposal tic septage. One of the vector attraction site demonstrates to the permitting reduction requirement in $503.33 (b)(9) authority that through management through (b)(12) shall be met when dopractices public health and the envi mestic septage is placed on an active ronment are protected from any rea sewage sludge unit. sonably anticipated adverse effects of pollutants in sewage sludge when ani 8503.26 Frequency of monitoring. mals are grazed. (a) Sewage sludge (other than domestic (m) Public access to a surface dis- septage). (1) The frequency of moniposal site shall be restricted for the pe- toring for the pollutants in Tables 1 riod that the surface disposal site con- and 2 of $503.23; the pathogen density tains an active sewage sludge unit and requirements in $ 503.32(a) and in for three years after the last active $ 503.32(b)(2); and the vector attraction sewage sludge unit in the surface dis- reduction requirements in $ 503.33(b)(1) posal site closes. through (b)(4) and $503.33(b)(7) through (n)(1) Sewage sludge placed on an ac- (b)(8) for sewage sludge placed on an tive sewage sludge unit shall not con- active sewage sludge unit shall be the taminate an aquifer. frequency in Table 1 of 8503.26. TABLE 1 OF $ 503.26—FREQUENCY OF MONITORING—SURFACE DISPOSAL Amount of sewage sludge Frequency Greater than zero but less than 290 Once per year. Equal to or greater than 290 but less than 1,500 Once per quarter (four times per year). Equal to or greater than 1,500 but less than 15,000 Once per 60 days (six times per year). Equal to or greater than 15,000 Once per month (12 times per year). Amount of sewage sludge placed on an active sewage sludge unit (dry weight basis). 1 (2) After the sewage sludge has been monitored for two years at the frequency in Table 1 of this section, the permitting authority may reduce the frequency of monitoring for pollutant concentrations and for the pathogen density requirements in 8 503.32(a)(5)(ii) and (a)(5)(iii). (b) Domestic septage. If the vector attraction reduction requirements in $503.33(b)(12) are met when domestic septage is placed on an active sewage sludge unit, each container of domestic septage shall be monitored for compliance with those requirements. (c) Air. Air in structures within a surface disposal site and at the property line of the surface disposal site shall be monitored continuously for methane gas during the period that the surface disposal site contains an active sewage sludge unit on which the sewage sludge is covered and for three years after a sewage sludge unit closes when a final cover is placed on the sewage sludge. (Approved by the Office of Management and Budget under control number 2040-0157) [58 FR 9387, Feb. 19, 1993, as amended at 64 FR 42570, Aug. 4, 1999] certification including the possibility of fine and imprisonment. (iii) A description of how the pathogen requirements in $503.32 (a), (b)(2), (b)(3), or (b)(4) are met when one of those requirements is met. (iv) A description of how one of the vector attraction reduction requirements in $503.33 (b)(1) through (b)(8) is met when one of those requirements is met. (2) The owner/operator of the surface disposal site, shall develop the following information and shall retain that information for five years. (i) The concentration of each pollutant listed in Table 2 of $503.23 in the sewage sludge when the pollutant concentrations in Table 2 of $ 503.23 are met or when site-specific pollutant limits in $ 503.23(b) are met. (ii) The following certification statement: I certify, under penalty of law, that the information that will be used to determine compliance with the management practices in $503.24 and the vector attraction reduction requirement in (insert one of the requirements in $503.33(b)(9) through $503.33(b)(11) if one of those requirements is met) was prepared under my direction and supervision in accordance with the system designed to ensure that qualified personnel properly gather and evaluate this information. I am aware that there are significant penalties for false certification including the possibility of fine and imprisonment. (iii) A description of how the management practices in $503.24 are met. (iv) A description of how the vector attraction reduction requirements in 8503.33 (b)(9) through (b)(11) are met if one of those requirements is met. (b) When domestic septage is placed on a surface disposal site: (1) If the vector attraction reduction requirements in $503.33(b)(12) are met, the person who places the domestic septage on the surface disposal site shall develop the following information and shall retain the information for five years: (i) The following certification statement: 8503.27 Recordkeeping. (a) When sewage sludge (other than domestic septage) is placed on an active sewage sludge unit: (1) The person who prepares the sewage sludge shall develop the following information and shall retain the information for five years. (i) The concentration of each pollutant listed in Table 1 of $503.23 in the sewage sludge when the pollutant concentrations in Table 1 of $ 503.23 are met. (ii) The following certification statement: I certify, under penalty of law, that the information that will be used to determine compliance with the pathogen requirements in (insert $503.32(a), $ 503.32(b)(2), $503.32(b)(3), or $503.32(b)(4) when one of those requirements is met) and the vector attraction reduction requirement in (insert one of the vector attraction reduction requirements in $503.33 (b)(1) through (b)(8) if one of those requirements is met) was prepared under my direction and supervision in accordance with the system designed to ensure that qualified personnel properly gather and evaluate this information. I am aware that there are significant penalties for false I certify, under penalty of law, that the information that will be used to determine compliance with the vector attraction reduction requirements in $ 503.33(b)(12) was prepared under my direction and supervision in fied either Class A or Class B with respect to pathogens. (b) This subpart contains the site restrictions for land on which a Class B sewage sludge is applied. (c) This subpart contains the pathogen requirements for domestic septage applied to agricultural land, forest, or a reclamation site. (d) This subpart contains alternative vector attraction reduction requirements for sewage sludge that is applied to the land or placed on a surface disposal site. accordance with the system designed to ensure that qualified personnel properly gather and evaluate this information. I am aware that there are significant penalties for false certification including the possibility of fine and imprisonment. (ii) A description of how the vector attraction reduction requirements in $503.33(b)(12) are met. (2) The owner/operator of the surface disposal site shall develop the following information and shall retain that information for five years: (i) The following certification statement: I certify, under penalty of law, that the information that will be used to determine compliance with the management practices in $503.24 and the vector attraction reduction requirements in (insert $503.33(b)(9) through $503.33(b)(11) if one of those requirements is met) was prepared under my direction and supervision in accordance with the system designed to ensure that qualified personnel properly gather and evaluate this information. I am aware that there are significant penalties for false certification including the possibility of fine or imprisonment. (ii) A description of how the management practices in $ 503.24 are met. (iii) A description how the vector attraction reduction requirements in $503.33(b)(9) through $ 503.33(b)(11) are met if one of those requirements is met. (Approved by the Office of Management and Budget under control number 2040-0157) (58 FR 9387, Feb. 19, 1993, as amended at 64 FR 42571, Aug. 4, 1999] 8 503.31 Special definitions. (a) Aerobic digestion is the biochemical decomposition of organic matter in sewage sludge into carbon dioxide and water by microorganisms in the presence of air. (b) Anaerobic digestion is the biochemical decomposition of organic matter in sewage sludge into methane gas and carbon dioxide by microorganisms in the absence of air. (c) Density of microorganisms is the number of microorganisms per unit mass of total solids (dry weight) in the sewage sludge. (d) Land with a high potential for public exposure is land that the public uses frequently. This includes, but is not limited to, a public contact site and a reclamation site located in a populated area (e.g, a construction site located in a city). (e) Land with a low potential for public exposure is land that the public uses infrequently. This includes, but is not limited to, agricultural land, forest, and a reclamation site located in an unpopulated area (e.g., a strip mine located in a rural area). (f) Pathogenic organisms are diseasecausing organisms. These include, but are not limited to, certain bacteria, protozoa, viruses, and viable helminth ova. (g) pH means the logarithm of the reciprocal of the hydrogen ion concentration measured at 25 °Centigrade or measured at another temperature and then converted to an equivalent value at 25 °Centigrade. (h) Specific oxygen uptake rate (SOUR) is the mass of oxygen consumed per unit time per unit mass of total solids (dry weight basis) in the sewage sludge. $503.28 Reporting. Class I sludge management facilities, POTWs (as defined in 40 CFR 501.2) with a design flow rate equal to or greater than one million gallons per day, and POTWs that serve 10,000 people or more shall submit the information in $503.27(a) to the permitting authority on February 19 of each year. (Approved by the Office of Management and Budget under control number 2040-0157) Subpart D-Pathogens and Vector Attraction Reduction $503.30 Scope. (a) This subpart contains the requirements for a sewage sludge to be classi er, the temperature of the sewage sludge shall be 50 degrees Celsius or higher; the time period shall be 20 minutes or longer; and the temperature and time period shall be determined using equation (2), except when small particles of sewage sludge are heated by either warmed gases or an immiscible liquid. (i) Total solids are the materials in sewage sludge that remain as residue when the sewage sludge is dried at 103 to 105 degrees Celsius. () Unstabilized solids are organic materials in sewage sludge that have not been treated in either an aerobic or anaerobic treatment process. (k) Vector attraction is the characteristic of sewage sludge that attracts rodents, flies, mosquitos, or other organisms capable of transporting infectious agents. (1) Volatile solids is the amount of the total solids in sewage sludge lost when the sewage sludge is combusted at 550 degrees Celsius in the presence of excess air. (58 FR 9387, Feb. 19, 1993, as amended at 64 FR 42571, Aug. 4, 1999) 8 503.32 Pathogens. (a) Sewage sludge-Class A. (1) The requirement in $503.32(a)(2) and the requirements in either 8503.32(a)(3), (a)(4), (a)(5), (a)(6), (a)(7), or (a)(8) shall be met for a sewage sludge to be classified Class A with respect to pathogens. (2) The Class A pathogen requirements in $503.32 (a)(3) through (a)(8) shall be met either prior to meeting or at the same time the vector attraction reduction requirements in $503.33, except the vector attraction reduction requirements in $503.33 (b)(6) through (b)(8), are met. (3) Class A- Alternative 1. (i) Either the density of fecal coliform in the sewage sludge shall be less than 1000 Most Probable Number per gram of total solids (dry weight basis), or the density of Salmonella sp. bacteria in the sewage sludge shall be less than three Most Probable Number per four grams of total solids (dry weight basis) at the time the sewage sludge is used or disposed; at the time the sewage sludge is prepared for sale or give away in a bag or other container for application to the land, or at the time the sewage sludge or material derived from sewage sludge is prepared to meet the requirements in $ 503.10 (b), (c), (e), or (f). (ii) The temperature of the sewage sludge that is used or disposed shall be maintained at a specific value for a period of time. (A) When the percent solids of the sewage sludge is seven percent or high Where, (B) When the percent solids of the sewage sludge is seven percent or higher and small particles of sewage sludge are heated by either warmed gases or an immiscible liquid, the temperature of the sewage sludge shall be 50 degrees Celsius or higher; the time period shall be 15 seconds or longer; and the temperature and time period shall be determined using equation (2). (C) When the percent solids of the sewage sludge is less than seven percent and the time period is at least 15 seconds, but less than 30 minutes, the temperature and time period shall be determined using equation (2). (D) When the percent solids of the sewage sludge is less than seven percent; the temperature of the sewage sludge is 50 degrees Celsius or higher; and the time period is 30 minutes or longer, the temperature and time period shall be determined using equation (3). Where, (4) Class A-Alternative 2. (i) Either the density of fecal coliform in the sewage sludge shall be less than 1000 Most Probable Number per gram of total solids (dry weight basis), or the density of Salmonella sp. bacteria in the sewage sludge shall be less than three Most Probable Number per four grams of total solids (dry weight basis) at the time the sewage sludge is used or disposed; at the time the sewage sludge is prepared for sale or give away in a bag |