DOE Comments re MDNS 001~ ~:
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DEPARTMENT OF ECOLOGY ~~
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August 4, 2006
Mr. Grant Beck, Director ` T ~ YOUf address
Community Development Department a ~ is In the
City of Yelm ,, ~. - Nisqually
PG Box 479 ~-; :. watershed
Yclm, WA 98597 y~=~
Dear Mr. Beck:
Thank you for the opportunity to comment on the mitigated de[ennination of nonsignifieance for the
Forrester Heights Phase 1 Subdivision project (SUB-OS-0458-YL), located at 15026 State Highway 507,
as proposed by FH I, LLC. The Department of Lcology (Ecology) reviewed the environmental checklist
and has the following wmment(s):
TOXIC CLEANUP: Lisa Pearson (360) 407-6261
If contamination is currently known or observed during construction, sampling of [he potentially
contaminated media must be conducted. If contamination of soil or groundwater is readily visible, or
is revealed by sampling, Ecology must be notified. Contact the Environmental Report Tracking
System Coordinator at the Southwest Regional Office at (360) 407-6300. For assistance and
information about subsequent cleanup and to identify [hc Type of testing [hat will be required contact
Mr. Bob Warren with the Toxic Cleanup Program at (360) 407-6361.
WATER QUALITY: Margaret Hill (360) 407-0246
Any discharge of sediment-laden runoff or other pollutants to waters of [hc state is in violation of
Chapter 90.48, Water Pollution Control, and WAC 173-201 A, Water Quality Standards for Surface
Waters of the State of Washington, and is subject to enforcement action.
Erosion control measures must be in place prior [o any clearing grading or construction. These
control measures must be effective [o prevent s[ormwater runoff from carrying soil and other
pollutants into surface water or storm drains that lead to waters of the state. Sand, silt, clay particles,
end soil will damage aquatic habitat and arc considered to be pollutants.
Proper disposal of construction debris most be on land in such a manner that debris cannot enter the
natural stormwater drainage system or cause water quality degradation of state waters.
During eonstructioq all releases of oils, hydraulic fluids, fuels, other petroleum products, paints,
solvents, and other deleterious materials must be contained and removed in a manner that will prevent
their discharge to waters and soils of the state. 'fhe cleanup of spills should take precedence over
other work on the site.
Soil in stockpiles should be stabilized or protected with sediment-trapping mcxsures to prevent soil
loss. All exposed areas of final grade or areas that are not scheduled for work, whether at final grade
or otherwise, shall not remain exposed and umworked for more than two days, between October I
and April 30. Between May I and September 30, no soils shall remain exposed and un-worked for
more than 7 days.
Clearing limits and/or any easements or required buffers should be identified and marked in the field,
prior to [he start of any clearing grading, or construction. Some suggested methods are staking and
flagging or high visibility fencing.
CJ
Angust 4, 2006
Page 2
A permanent vegetative cover should be established on denuded areas at final grade if [hey are not
otherwise permanently stabilized.
Properties adjacent to the site of a land disturbance should be protected from sediment deposition
through the use of buffers or other perimeter controls, such as filter fence or sediment basins.
Cut and/or fill slopes should be designed to minimize erosion. Methods such as slope roughening,
terraces, or pipe slope drains may be used.
All temporary erasion control systems should be designed to contain the runoff from the developed
two year, 24-hour design storm without eroding.
Provision should be made [o minimize [he tracking of sediment by construction vehicles onto paved
public roads. If sediment is deposited, it should be cleaned every day by shoveling or sweeping.
Water cleaning should only be done after the area has been shoveled out or swept.
Sonrce control BesC Management Practices (BMPs) such as plastic covering, mulch, temporary
seeding, and phased clearing (for example) should be used to control erosion during construction.
More examples of effective source control BMPs can be found in Ecology's two Stormwater
management manuals, Stormwater Managemen! Manual for Puget Sound (1992) and Stormwater
Management Manual for Western Washiugton (2001).
Coverage under the National Pollution Discharge Elimination System (NPDES) and State Waste
Discharge General Permit for Stormwater Discharges Associated with Construction Activities is
required for construction sites which disturb an area of one acre or more and which have or will have
a discharge of Stormwater [o surface water or a s[ortn sewer. An application can be downloaded from
Ecology's website at htfi~//www ecy a eo /oroarams/wq/storm Ater/cons[ruc[ion/ItApol'cation or
you can wntac[ Charles Gilman a[ (360) 407-7451 for an application form.
Ecology's comments are based upon [he information provided with the SEPA checklist. As such, they do
not cons[iN[e an exhaustive list of the various authorizations that must be obtained or legal requirements
[ha[ must be fulfilled in order to carry out [he proposed action.
If you have any questions or would like [o respond [o these comments please contact the appropriate
reviewing staff listed above.
Department of Ecology
Southwest Regional Office
(DN: 06-6113)
ce: Charles Gilman, HQ/WQ
Lisa Pearsoq TCP
Bob Warren, TCP
Roberta Woods, WQ
FHI, LLC (Proponent)