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Response to Written Comments Page 8 of 11 09 October 2023 Forward Landfill, Inc. Newcastle Rd withing 1/2 mile of the facility boundary rather than the 2 residences on Austin and 5 residences on Newcastle noted in the Finding. Please note that the former residences at 9690 Austin Rd was demolished several years ago. RESPONSE: Based on discussions with the Discharger, six residences are located within the half- mile radius of the facility boundary. Finding 36 (previously Finding 37) has been updated to reflect this change. COMMENT NO. 18: (WDR Finding 48, Pg 16). See updated Figure 2 for Attachment D. RESPONSE: The updated monitoring point map provided shall be used as Attachment D. COMMENT NO. 19: (WDR Finding 51, Pg 17). Suction cup lysimeters were also used under pan lysimeters since 2001 but discontinued starting with WMU FU-19. The statement that the landfill units built above old Austin Road have a suction cup lysimeter in addition to pan lysimeter is incorrect. All of the leachate from the units above old Austin Road landfill drain to the Subtitle D cells located to the south of the old Austin landfill. RESPONSE: Finding 50 (previously Finding 51) has been reworded to specify which waste management units utilized the combination of suction cup lysimeters and pan lysimeters. COMMENT NO. 20: (WDR Table 3, Pg 17). Residential Domestic Wells listed under Correction Action Program in the Tentative WDR. These wells are currently sampled under directive in CAO and the data indicate that they have not been affected by a release from the landfill and should not be included in the more frequent and rigorous reporting program proposed in the Tentative WDR. RESPONSE: The Residential Domestic Wells listed in Table 3 and Attachment H are directly from the CAO and can only be removed once the CAO is rescinded. A note will be added to Table 3 to highlight this point. The addition of these wells in the Tentative WDRs and MRP does not require an increase in the frequency of reporting or sampling method beyond what has been established by the conditions of the CAO.