EXH2058031696

PCHBPollution Control Hearings Board of the State of Washington

Sent: Tuesday, October 23, 2001 2:00 PM To: Kenny, Ann; Hellwig. Raymond Co: Clark, Beth; Agid, Paul; Walsh, Dave; Torn Walsh (E-mail); Thomson, Jim Subject: FW: Processed Materials TopSoilSpecJfi_UonBaseCour_e.SpecfficSpecifi_UonsUUliUeGe_lEm _ nkmen s.doc aUo_.doc s.doc _pecifi_Uon... Ann- This e-mail follows up the meeting we had a few weeks ago to begin discussions on which projects and types of materials the "fill criteria" condition of the 401 might apply to. As promised, attached are the specifications for the various types of fill that are commonly used, and will be spec'd for the embankment. We are proposing, for your consideration, that topsoil, utility backfill and base course not be subject to fill criteria, and that the bulk of the soils used, general embankment material, would be subject Co testing/the condition. Generally speaking, the first three types of material are highly processed and graded as to size and shape (eg: have sharp angles that allow for important physical properties) , have a higher percentage of gravel and rock, and are used in far lesser quantity than the general embankment materials. The first three are also used in certain zones of the fill rather than overall in the embankment. After you and your team have had a chance to review this, we can meet and advance the discussion further. Thanks • .... 'Original Message ..... • From: Clark, Beth > Sent: Tuesday, October 23, 2001 12:05 PM • To: Leavitt, Elizabeth • Cc: Agid, Paul; Walsh, Dave • Subject: Processed Materials • Elizabeth, • Attached…
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