D. Grubbed areas not internally drained must be stabilized.

E. Erosion and sedimentation control for access roads must be conducted in accordance with the department's best management practices for erosion and sedimentation control. Areas for access roads that are not naturally internally drained must meet the erosion and sedimentation control standards of section 420-C.

F.__All areas other than a working pit area that are not naturally internally drained must meet the erosion and sedimentation control standards of section 420-C.

The department may grant a variance from this subsection, except for paragraphs C, D and, E and F. Areas are not considered "naturally internally drained" if surface discharge is impeded through the use of structures such as detention ponds, retention ponds and undersized culverts.

Sec. 3. 38 MRSA §490-W, sub-§24 is enacted to read:

24.__Working pit.__"Working pit" means the extraction area, including overburden, of an excavation for rock.__"Working pit" does not include a stockpile area or an area that has a permanent fixed structure such as an office building, permanent processing facility or fixed fuel storage structure.

Sec. 4. 38 MRSA §490-Z, sub-§8, as amended by PL 2005, c. 158, §12, is further amended to read:

8. Erosion and sedimentation control. All reclaimed and unreclaimed areas, except for access roads, A working pit must be naturally internally drained at all times unless a variance is obtained from the department. Stockpiles consisting of topsoil to be used for reclamation must be seeded, mulched or otherwise temporarily stabilized.

A. Sediment may not leave the parcel or enter a protected natural resource.

B. Grubbed areas not internally drained must be stabilized.

C. Erosion and sedimentation control for access roads must be conducted in accordance with the department's best management practices for erosion and sedimentation control. Areas for access roads that are not naturally internally drained must meet the standards of section 420-C.