DOE Comment re MDNS 001eri
STATE OF WASHINGtON
DEPARTMENT OF ECOLOGY
PO Hnx 41]15 • Olympia, Washington Y1604-0:]5 • (350) 40J-6300
June 16,2006
Ms. Tami Merriman 'I ~ YOUf addfeSS
Community Development Department ~ -~ I iS if1 the
City of Yelm I Nisqually
PO BOx 479 ti,. ~-p , ~,,l watershed
Yclm, WA 98597 ~_:i-1
Dcar Ms. Merriman:
Thank you for [he opportuniTy to comment on [he mitigated determination of nonsignificance for the
Rainier V iew Estates Subdivision project (SEPA No. OS-0531), located aY 9910 Durant Street, as
proposed by Crest Builders, Inc. The Department of Ecoloyry (Ecology) reviewed the environmental
checklist and has [he following comment(s):
TOXIC CLEANUP: Lisa Pearson (360) 407-6261
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If contamination is currently known or observed during construction, sampling of the 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 Environmemal Report Tracking
System Coordinator at the Southwest Regional Office at (360) 407-6300. For assistance and
information about subsequent cleanup and to identify the type of testing that will be required contact
Mr. Bob Warren with the Toxic Cleanup Program a[ [he Southwest Regional Office a[ (360)
407-6361.
WATER QUALITY: Margaret Hill (360) 407-0246
Any discharge of sediment-laden runoff or other pollutants to waters of [he state is in violation of
Chapter 90.48, Water Pollution Control, and WAC 173-201 A, Water QualiTy Standards for Surface
Waters of the Stale of Washington, and is subject [o enforcement action.
Erosion control measures must be in place prior to any clearing, grading or construction. 'these
control measures must be effective to prevent stormwater runoff From carrying soil and other
pollutants into surfaw water or storm drains that lead to waters of the state. Sand, silt, clay particles,
and soil will damage aquatic habitat and are considered to be pollutants.
Proper disposal of construction debris must be on land in such a manner [ha[ debris cannot enter the
natural s[ormwater drainage system or cause water quality degradation of state waters.
Soil in stockpiles should be stabilized or protected with sediment-trapping measures to prevent soil
loss. All exposed areas of final grade or areas that arc not scheduled for work, whether a[ final grade
or otherwise, shall no[ remain exposed and un-worked 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.
.lone 16, 2006
Page 2
Clearing limits and/or any easements or required buffers should be identified and marked in the field,
prior to the start of any clearing, grading, or construction. Some suggested methods are staking and
flagging or high visibility fencing.
Properties adjacent [o the site of a land disturbance should be protected from sediment deposition
through [he use of buffers or other perimeter controls, such as Plter fence or sediment basins.
Provision should be made to minimize the 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.
Wash water from paint and wall finishing equipment should be disposed of in a way which will not
adversely impact waters of the state. Untreated disposal of [his wastewater is a violation of State
Water QualiTy laws and statutes and as such, would be subject [o enforcement action.
Source control Best Management Practices (BMPs) such as plastic covering, mulch, temporary
seeding, and phased clearing (for example) should be used m control erosion during construction.
More examples of effective source control BMPs can be found in Ecology's two stormwater
management manuals, Stormwater Management Manual for Puget Sound (1992) and Stormwoter
Management Manua7fur Western Washington (2001).
Coverage under the National Pollution Discharge Elimination System (NPDES) and Stale 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 to surface water or a storm sewer. An application can be downloaded from
Ecology's websi[e at ht[p'//www ecv wa eo /oroerams/ a/stormwater/cons[ruction/kAoolication or
you can concoct Charles Gilman at (360) 407-7451 for an application form.
Ecology's comments are based upon the information provided with the SEPA checklist. As such, they do
no[ constitute an exhaustive list of the various authorizations [hat must be obtained or legal requirements
that must be fulfilled in order [o carry out the proposed action.
If you have any questions or would like to respond [o these comments please contact the appropriate
reviewing staff listed above.
Department of Ecology
Southwest Regional Office
(DN: 06-4676)
ce: Charles Gilman, HQ/WQ
Margaret Hill, WQ
Lisa Pearson, TCP
Bob Warren, TCP
Mike Bolter, Crest Builders Inc. (Applicant)
Kevin Foley, BASELINE Engineering, Inc. (Agent)