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Mr. Gabriel Karam, P.E. Page 2 of 5 access to the facility for the duration of the postclosure maintenance period. The sign shall also include an emergency telephone number [Title 14, California Code of Regulations (14 CCR), Section 177671. 2. Indicate in the closure plan when the final cover will be added to the landfill (14 CCR 17773). 3. Indicate in the closure plan that the depth of the gas well bore shall equal the depth of refuse as measured within 1,000 feet of the monitoring point [14 CCR 17783.5 (c) (1) ] . 4. The landfill gas monitoring results should also include item number 1 and 2 specified in 14 CCR 17783(a). S. Indicate in the closure plan whether the perimeter ditch is already in place to accept runoff water from the drainage basin. 6. Sheet 3 of the engineered drawing indicates that the spacing between GW -1 and GW -2, GW -2 and GW -3, and GW -3 and GW -4 exceed 1,000 feet. This is not in compliance with 14 CCR 17783.5(b)(1). 7. Include in the construction quality assurance plan that a final documentation report will be compiled and submitted to the LEA and the Board at the completion of the project [14 CCR 17774(d) (3) and (4) ] . 8. The cost for drainage system installation indicated on page 20 differs from that on page 22 of the final closure plan (page 20 shows $9,000 and page 22 shows $30,800). 9. Postclosure Maintenance Plan - Any future plans for reduction of landfill gas monitoring frequency during the closure and postclosure maintenance period shall be approved by the LEA and the Board (14 CCR 17783.17). QX0�9gI WK6 U r 1. Owners/operators of landfills that receive waste after the effective date of Subtitle D will be required to do the following: A. Begin closure activities no later than 30 days after the date a landfill unit receives the known final receipt of wastes [Title 40, Code of Federal Regulations (40 CFR), Section 258.60(f)]; and