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AC26 Dept. Ecology 9-28-2017 September 28, 2017 Ms. Lori Barlow, AICP Senior Planner Community & Economic Development City of Spokane Valley 11707 East Sprague Avenue, Suite 106 Spokane Valley, WA 99206 Re: Painted Hills Planned Unit Residential Development (PRD), File # SUB-2015-0001/PRD-2015-0001 Dear Ms. Barlow: Thank you for the opportunity to comment on the Determination of Significance and Scope of an Environmental Impact Statement regarding the PRD for 300 single-family lots, 280 multi-family units, & a neighborhood commercial center, with 30 acres of open space for recreation and pedestrian trail systems, and four access roads (Proponent: Black Realty, Inc.). The Department of Ecology (Ecology) has reviewed the documents and submits the following comments: Hazardous Waste and Toxics Reduction Program-Andrew Maher (509) 329-3612 Wastes produced during construction or remodeling can be dangerous wastes in Washington State. Some of these wastes include: Absorbent material, aerosol cans, asbestos-containing materials, lead- containing materials, PCB-containing light ballasts, waste paint, waste paint thinner, sanding dust and treated wood. The Common Construction and Demolition Wastes website has a more comprehensive list and a link to identifying and designating your wastes. This can be found on line at: http://www.ecy.wa.gov/programs/hwtr/dangermat/common_demo_wastes.html Responsibility for construction waste generated at a facility is the responsibility of the facility that generates the waste. More information about who is responsible for properly managing construction debris can be found at: http://www.ecy.wa.gov/programs/hwtr/dangermat/demo_responsibility.html In order to adequately identify some of your construction and remodel debris, you may need to sample and test the wastes generated to determine whether they are dangerous waste. Information about how to sample and what to test for can be found at: http://www.ecy.wa.gov/programs/hwtr/dangermat/samplingDemoDebris.html. For more information and technical assistance, contact John Blunt at (509) 329-3525 or via email at jblu461@ecy.wa.gov. Ms. Lori Barlow, AICP September 28, 2017 Page 2 Shorelands and Environmental Assistance Program-Floodplains-Lynn Schmidt (509) 329-3413 The alternatives proposed in the EIS should include the feasibility of flood map revisions. Proposed revisions are not typical, and will require an in-depth review by FEMA. I recommend initiating technical discussions with the FEMA Region X Engineering Staff if they have not already been started. Contact FEMA Region X at (425) 487-4600. Please contact Lynn Schmidt at (509) 329-3413 or at lynn.schmidt@ecy.wa.gov for more information. Water Quality Program-Shannon Petrisor (509) 329-3610 Proper erosion and sediment control practices must be used on the construction site and adjacent areas to prevent upland sediments from entering surface water. Local stormwater ordinances will provide specific requirements. Also refer to the Stormwater Management Manual for Eastern Washington (http://www.ecy.wa.gov/programs/wq/stormwater/eastern_manual/manual.html). All ground disturbed by construction activities must be stabilized. When appropriate, use native vegetation typical of the site. All new dry wells and other injection wells must be registered with the Underground Injection Control program (UIC) at Department of Ecology prior to use and the discharge from the well(s) must comply with the ground water quality requirement (nonendangerment standard) at the top of the ground water table. Contact the UIC staff at UIC Program, Department of Ecology, P.O. Box 47600, Olympia, WA 98504-7600, (360) 407-6143 or go to http://www.ecy.wa.gov/programs/wq/grndwtr/uic/registration/reg_info.html for registration forms and further information. Stormwater runoff may contain increased levels of grease, oils, sediment, and other debris. Stormwater Best Management Practices (BMPs) should be installed and maintained so that any discharge will be appropriately treated to remove these substances. Routine inspections and maintenance of all erosion and sediment control Best Management Practices (BMPs) are recommended both during and after development of the site. A Stormwater Pollution Prevention Plan for the project site may be required and should be developed by a qualified person(s). Erosion and sediment control measures in the plan must be implemented prior to any clearing, grading, or construction. These control measures must be effective to prevent soil from being carried into surface water by stormwater runoff. Sand, silt, and soil can damage aquatic habitat and are considered pollutants. The plan must be upgraded as necessary during the construction period. Proper disposal of construction debris must be in such a manner that debris cannot enter the natural stormwater drainage system or cause water quality degradation of surface waters. Dumpsters and refuse collection containers shall be durable, corrosion resistant, nonabsorbent, nonleaking, and have close fitting covers. If spillage or leakage does occur, the waste shall be picked up immediately and returned to the container and the area properly cleaned. The operator of a construction site that disturbs one acre or more of total land area, and which has or will have a discharge of stormwater to a surface water or to a storm sewer, must apply for coverage under Department of Ecology’s Baseline General Permit for Stormwater Discharges Associated with Construction Activities. Ms. Lori Barlow, AICP September 28, 2017 Page 2 Owners of sites where less than one acre of total land area will be disturbed must also apply if the construction activity is part of a larger plan of development or sale in which more than one acre will eventually be disturbed. Discharge of stormwater from such sites without a permit is illegal and may be subject to enforcement action by the Department of Ecology. If any soil or ground water contamination is known to be on the site, additional information is needed. The applicant may be required to submit additional studies and reports including, but not limited to, temporary erosion and sediment control plans, a stormwater pollution prevention plan, a site map depicting sample locations, a list of known contaminants with concentrations and depths found and other information about the contaminants. Application should be made at least 60 days prior to commencement of construction activities. A permit application and related documents are available online at: http://www.ecy.wa.gov/programs/wq/stormwater/construction; or by contacting the Water Quality program, Department of Ecology, P.O. Box 47600, Olympia, WA 98504-7600; (360) 407- 6401. State Environmental Policy Act (SEPA) Ecology’s comments are based upon information submitted for review. As such, they do not constitute an exhaustive list of the various authorizations that must be obtained or legal requirements that must be fulfilled in order to carry out the proposed action. If you have any questions or would like to respond to these comments, please contact the appropriate staff listed above. Department of Ecology Eastern Regional Office (Ecology File #: 201704778) cc: Dave Black, Black Realty, Inc.