Section 30.340 - Large Quantity Generators(1) A generator who is not a Small Quantity Generator pursuant to 310 CMR 30.351 or a Very Small Quantity Generator pursuant to 310 CMR 30.353 is a Large Quantity Generator. (2) A Large Quantity Generator shall comply with the requirements set forth or referred to in 310 CMR 30.340 through 30.343, and with all other applicable requirements of 310 CMR 30.000, including the land disposal restrictions set forth in 310 CMR 30.750.(3) A Large Quantity Generator may manage its regulated recyclable materials in compliance with 310 CMR 30.200 and manage its universal wastes in compliance with 310 CMR 30.1000.(4) A Large Quantity Generator may accumulate hazardous waste at the site of generation for 90 days or less without a storage license from the Department and without obtaining interim status provided that the following requirements are complied with: (a) The waste shall be accumulated in compliance with the general accumulation standards of 310 CMR 30.341.(b) The waste shall be accumulated in containers or tanks or both.1. Waste placed in containers shall be managed in compliance with 310 CMR 30.342.2. Waste placed in tanks shall be managed in compliance with 310 CMR 30.343.(5) A Large Quantity Generator may accumulate wastewater treatment sludges from electroplating operations identified in 310 CMR 30.133 as EPA Hazardous Waste No. F006 at the site of generation for 180 days or less without a storage license and without obtaining interim status provided:(a) The F006 waste is accumulated in containers or tanks or both. 1. F006 waste placed in containers shall be managed in compliance with 310 CMR 30.342.2. F006 waste placed in tanks shall be managed in compliance with 310 CMR 30.343.(b) The F006 waste is legitimately recycled off-site through metals recovery;(c) The generator has implemented pollution prevention practices that reduce the amount of any hazardous substances, pollutants or contaminants entering the F006 waste or otherwise released to the environment prior to recycling;(d) No more than 20, 000 kg of F006 waste is accumulated on-site at any one time.(6) A generator may, for any length of time, without being licensed pursuant to 310 CMR 30.000 or having interim status, and without complying with 310 CMR 30.341 or 30.342 except as specified in 310 CMR 30.340(6), accumulate hazardous waste or waste oil in containers at or near each specific point of generation where wastes initially accumulate, provided that all of the following requirements are met: (a) The wastes must be generated as a result of a process occurring at the specific point of generation where the wastes are initially accumulated.(b) Each such specific point of generation where wastes initially accumulate, and each satellite accumulation container, shall be under the control of the key staff individual directly responsible for the process resulting in the generation of such wastes.(c) For each specific point of generation, only one container per wastestream may be used at any one time. The maximum capacity of said container shall be as follows: 1. 55 gallons if the hazardous waste or waste oil being accumulated is non-acutely hazardous waste identified or otherwise described in 310 CMR 30.120 through 30.135; or2. one quart if the hazardous waste being accumulated is acutely hazardous waste listed or otherwise described in 310 CMR 30.136.(d) Within three days of the time a generator fills a container or accumulates a quantity of hazardous waste or waste oil in excess of the applicable limit described in 310 CMR 30.340(6)(c), whichever comes first, the generator shall, with respect to that container and all the hazardous waste or waste oil accumulated therein, come into full compliance, and thereafter remain in full compliance, with 310 CMR 30.340 through 30.342. If a generator is subject to the preceding sentence, said generator shall, until it comes into full compliance with 310 CMR 30.340 through 30.342, continue to comply with 310 CMR 30.340(6).(e) The generator shall at all times comply with the requirements set forth in 310 CMR 30.341(2)(a) through (c), as well as 30.342(1)(a) through (d)1. and (e)1., and 30.688(4).(7) A generator may operate a wastewater treatment unit in compliance with the requirements set forth or referred to in 310 CMR 30.605.(8) A large quantity generator may conduct elementary neutralization of corrosive hazardous wastes at the site of generation in an elementary neutralization unit in compliance with 310 CMR 30.1103, without a license to treat hazardous waste, but shall comply with all applicable provisions of 310 CMR 30.0000 while such waste remains hazardous.(9) A generator who sends a shipment of hazardous waste to a designated facility with the understanding that the designated facility can accept and manage the waste and later receives that shipment back as a rejected load or residue in accordance with the manifest discrepancy provisions of 310 CMR 30.533 or 310 CMR 30.099(6)(a) may accumulate the returned waste on-site in accordance with paragraphs 310 CMR 30.341, 30.351 or 30.353, depending on the amount of hazardous waste on-site in that calendar month. Upon receipt of the returned shipment, the generator shall: (a) Sign Item 18c of the manifest, if the transporter returned the shipment using the original manifest; or(b) Sign Item 20 of the manifest, if the transporter returned the shipment using a new manifest.Amended by Mass Register Issue 1522, eff. 5/24/2024.Amended by Mass Register Issue 1524, eff. 5/24/2024.