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HomeMy WebLinkAboutSEPA EPIC-15-91 - METRO - SEWAGE TREATMENT PLANT PHASE IIIMETRO TREATMENT PLANT IN RENTON PHASE III SEWAGE TREATMENT PLANT INTERURBAN AVE. S. & GRADY WAY EPIC -15 -91 City of Tukwila 6200 Southcenter Boulevard Tukwila Washington 98188 (206) 433 -1800 Gary L. VanDusen, Mayor MEMORANDUM To: Project File From: Vernon Umetsu, Associate Planner Department of Community Development Date: June 3, 1991 RE: EPIC- 15 -91: Metro Treatment Plant in Renton, Phase III. 1. A final supplemental E.I.S. was issued on Friday, May 24, 1991, and received by Tukwila on May 28, 1991. As a final E.I.S., any administrative appeal would have to be filed by May 31st, seven days after issuance. 2. Specific Planning Division concerns identified in the April 19th comment letter were satisfactorily resolved. 3. The City Engineer determined that the additional 213 AWDT during non -peak hours (FEIS:5 -37) is too small a traffic increase to result in measurable impacts (Cameron 6/3/91). Concurring. :. L. Rick Beeler, SEPA Responsible Official cc: Cameron, Beeler, Pace, Mayor. CITY OF TUKWILA 6200 SOUTHCENTER BOULEVARD, TUKWILA. WASHINGTON 98188 April 19, 1991 PHONE # (2061433.1800 Gary L. VanDusen, Mayor Gregory M. Bush, Manager Environmental Compliance Division METRO, 821 Second Avenue, M.S. 120 Seattle, Washington 98104 -1598 RE: Comments on the D.E.I.S. for the expansion of the Renton METRO sewage treatment plant. Dear Mr. Bush, I have reviewed the subject D.E.I.S. and have the following comments. General The F.E.I.S. should have a minimum 30 day review period. This is necessary for Tukwila staff to review the significant additional information requested on Aesthetic and Transportation impacts. Alternatively, a supplemental E.I.S. may be issued. Air The existing facility has occasionally emitted odors sufficient to generate resident complaints to Tukwila City Offices. The proposed expansion should not increase the magnitude of the existing problem. METRO has specified what actions it will take to ensure that its standard of 8 odor units at the property line will be achieved. A commitment to achieve this standard must be clearly made and a process for complaint resolution should be specified. Aesthetics A land use plan showing plant symbols and contour lines has been presented as a mitigating action to visually screen the facility. However, the applicant has not provided a key to the plant symbols, size of plants at installation, or contour interval. This information is essential to begin evaluating the adequacy of the mitigating action. Tukwila is particularly interested the adequacy of "far view" mitigation with large stature coniferous trees from Tukwila Hill. Tree installation size is important to determine how long the • • various species will need to have any appreciable view impact mitigation. Tukwila typically requires large stature coniferous trees for projects such as this which rely on heavy plant screening for aesthetic impact mitigation. At a minimum, such treed areas should be located along the project perimeter and in interior groupings to break up the visual impacts of large paved areas and building mass. Typical tree specifications include using 2 -1/2 to 3 -1/2 inch caliper stock and an average planting density of 30 feet on center. The barren ground conditions in the immediate area indicate that all landscape areas should have automatic irrigation for 2 - 5 years in order to allow proper establishment and realize average growth rates. The duration of required automatic irrigation depends on species type and size at planting, with native plants requiring a shorter time to become established. Transportation In general, traffic impacts to local streets and intersections by project traffic, and especially sludge trucks; have not been adequately identified and analyzed. Specific comments are listed below: 1. The various figures showing the local road network (i.e. figures 8, 9, et. al.), incorrectly portray Interurban Avenue curving to the east where it turns into Grady Way. In fact, Interurban Ave. continues to the south under I -405 where it becomes West Valley Highway. Grady Way joins Interurban in a very heavily used, quarter mile segment which also contains two, I -405 on /off ramps, and the Southcenter Boulevard /Interurban Ave. intersection. All relevant figures should be revised to correctly show the road network. 2. The overall analysis focusses on the A.M. /P.M. peaks when surface street traffic is high and project truck traffic would be expected to be low. However, traffic levels in the immediate Tukwila area along Interurban Avenue So. are very high throughout the day and flows are especially sensitive to increased turning movements in the segment between Southcenter Boulevard and the southern I -405 ramp. Project traffic impacts at the Grady Way /Interurban intersection should be analyzed during the P.M. peak and noon hours. Project impact analysis and mitigation should reflect that used in reviewing the Rabanco C.D.L.C. transfer station. The Tukwila Public Works Dept. should be contacted at 433 -0179 for the appropriate existing and projected traffic levels and specific technical issues to be addressed. • • 3. The adequacy of Longacres Way along its 20 foot access easement and at the two rail road underpasses, should be evaluated for the increased septic truck traffic from 66 trips to 100 trips in light of the proposed Boeing Longacres improvement. Please feel free to contact Vernon Umetsu of my staff at 431 -3684 if you have any questions. L. Rick Beeler SEPA Responsible Official cc: Cameron, Pace, Mayor, file. v2- metrostp April , 1991 Gegory M. Bush, Manager Environmental Compliance Division METRO, 821 Second Avenue, M.S. 120 Seattle, Washington 98104 -1598 PG S Alifft?- one PC_. 2. ue- of\r- 4- //I, RE: Comments on the D.E.I.S. for the expansion of the Renton �K METRO sewage treatment plant. Dear Mr. Bush, I have reviewed the subject D.E.I.S. and have the following comments which should be addressed in the F.E.I.S. Air The existing facility has occasionally emitted odors sufficient to generate resident complaints to Tukwila City Offices. The proposed expansion should not increase the magnitude of the existing problem. METRO has specified what actions it will take to ensure that its standard of 8 odor units at the property line will be achieved. A commitment to achieve this standard must be clearly made and a process for complaint resolution should be specified. Aesthetics A land use plan showing plant symbols and contour lines has been presented as a mitigating action to visually screen the facility. However, the applicant has not provided a key to the plant symbols, size of plants at installation, or contour interval. This information is essential to begin evaluating the adequacy of the mitigating action. Tukwila is particularly interested the adequacy of "far view" mitigation with large stature coniferous trees; especially from Tukwila Hill. Tree installation size is also important to determine how long the various species will need to have any appreciable view impact mitigation. Tukwila typically requires large stature coniferous trees for projects such as this which rely on heavy plant screening for aesthetic impact mitigation. At a minimum, such treed areas should be located along the project perimeter and in interior groupings to break up the affect of large paved areas and building mass. Typical tree specifications include using 2 -1/2 to 3 -1/2 inch caliper stock and an average planting density of 30 feet on center. The barren ground conditions in the immediate indicate that all landscape areas should have automatic irrigation for 2 - 5 years in order to allow proper establishment and realize average growth V k • • rates. The duration of required automatic irrigation depends on species type and size at planting, with native plants requiring a shorter time to become established. Transportation In general, traffic impacts to local streets and intersections by project traffic, and especially sludge trucks; have not been adequately identified and analyzed. Specific comments are listed below: 1. The various figures showing the local road network (i.e. figures 8, 9, et. al.), incorrectly portray Interurban Avenue curving to the east where it turns into Grady Way. In fact, Interurban Ave. continues to the south under I -405 where it becomes West Valley Highway. Grady Way joins Interurban in a very heavily used, quarter mile segment which also contains two, I -405 on /off ramps, and the Southcenter Boulevard /Interurban Ave. intersection. All relevant figures should be revised to correctly show the road network. 2. The overall analysis focusses on the A.M. /P.M. peaks when surface street traffic is high and project truck traffic would be expected to be low. However, traffic levels in the immediate Tukwila area along Interurban Avenue So. are very high throughout the day and flows are especially sensitive to increased turning movements in the segment between Southcenter Boulevard and the southern I -405 ramp. Project traffic impacts at the Grady Way /Interurban intersection should be analyzed (a) during the surrounding street peak (to account for employee traffic impacts) and (b) during the project generated truck traffic peak (an average truck traffic load may be used). Project impact analysis and mitigation should reflect that used in reviewing the Rabanco C.D.L.C. transfer station. The Tukwila Public Works Dept. should be contacted for the appropriate existing and projected traffic levels and specific technical issues to be addressed. Ron: 1\(0-r6: Off peak trips would probably be sludge trucks increasing by 5 -6 truck trips per day; with METRO O &M trucks and cars increasing by 50 trips per day. Do we care about off -peak analysis? Peak hour analysis would focus on employee trips increasing from 224 /day to 336 /day. • • 3. The adequacy of the 20 foot access easement and rail road underpass capacity should be evaluated for the increased septic truck traffic from 66 trips to 100 trips in light of the proposed Boeing Longacres improvement. r • • Ii Cf(0.) c-1-7\ir RECEIVED APR 0 -81991 TUKWILA PUBLIC WORKS p C-ff GI 5 c67) Al C7-40 rS S 7 ; ( 67 P4 Ar t' o AC ry k >'o 0 2. (iv Fo, P Al6 re" 77-*1 T Y (,)/ CO/W.4 e7V 1 M - ve- o, -4 /7 (7-vMr� v�2 ,) pe)2 1-12- -r-2 A l ($ M r"T 7 , his C /,.t vii) 5A z"° AlCDo Y) +A/S-) ur You SAY Sr47- 7-0 NA c&- uP 72 Tv pool) CORM KIN/ )S vC - r e. (4 r PLC:) comm 6,rf <.S r" f-1 d-' W v c L gg -b c o /4 T © g y-o K 1 h r CC t PA- C6C _�7 N <..5 -- « Ar 16 81- • • RE: Comments on the D.E.I.S. for the expansion of the Renton METRO sewage treatment plant. Dear I have reviewed the subject D.E.I.S. and have the following comments which should be addressed in the F.E.I.S. Air The existing facility has occasionally emitted odors sufficient to generate resident complaints to Tukwila City Offices. The proposed expansion should not increase the magnitude of the existing problem. METRO has specified what actions it will take to ensure that its standard of 8 odor units at the property line will be achieved. A commitment to achieve this standard must be clearly made and a process for complaint resolution should be specified. Aesthetics A land use plan showing plant symbols and contour lines has been presented as a mitigating action to visually screen the facility. However, the applicant has not provided a key to the plant symbols, size of plants at installation, or contour interval. This information is essential to begin evaluating the adequacy of the mitigating action. Tukwila is particularly interested the adequacy of "far view" mitigation with large stature coniferous trees; especially from Tukwila Hill. Tree installation size is also important to determine how long the various species will need to have any appreciable view impact mitigation. Tukwila typically requires large stature coniferous trees for projects such as this which rely on heavy plant screening for aesthetic impact mitigation. At a minimum, such treed areas should be located along the project perimeter and in interior groupings to break up the affect of large paved areas and building mass. Typical tree specifications include using 2 -1/2 to 3 -1/2 inch caliper stock and an average planting density of 30 feet on center. The barren ground conditions in the immediate indicate that all landscape areas should have automatic irrigation for 2 - 5 years in order to allow proper establishment and realize average growth rates. The duration of required automatic irrigation depends on species type and size at planting, with native plants requiring a shorter time to become established. Transportation, Earth, Water, etc. Ron Cameron comments are due on Tuesday, April 9th (sent to RC on 4/2). \12 : Mc 7?-os rP • • MEMORANDUM To: Jack Pace From: Vernon Umetsu, Associate Planner Department of Community Development Date: 4/2/91 RE: METRO DEIS for . expansion of Renton sewage treatment plant. Completed preliminary review and determine that there is not much impact except for the following potential: 1. Air -- Potential increased odors, but METRO says that it is taking various measures and will achieve its standard of 8 odor units at the property line. 2. Traffic -- Potential increased sludge truck traffic. This will be reviewed by Public Works (transmitted 4/2/91 with comments due on 4/9). 3. Aesthetics -- Views to be screened by landscaping and berms. Landscaping plan symbols have no key and no contour interval called out. METRO will specify planting standards and ID contours at five feet in FEIS. Action Items A. Only anticipated comments on aesthetics to be sure screening is called out so we can then determine if it is adequate. B. Public Works comments to be incorporated. C. Draft comments due 4/15 to Jack Pace with comment deadline of 4/22. cc sAys coArroo e -r P - 7D-e-aJ14-7 .= c _ (c4J/Cee c At. _ _� (Z C .a -a;I ;rte a 4.44, 2e ) pe„A417). g A L. .eetssQ zz... .W-_. ct.c.,_e4_ c.)._ c„c0.e.et.74Lee-iy, cif r-4- os- 04- G v� �-Pd fr�.P f.4 Ko —. J,e 0_4-(4te ,4:-4._ yee,e;e4 , z-l.t_ 4v6.-.4i, xee, _ P -2 �. --.0 -Q -4-4? 4-4-24 ., r ( /3 25„,5_,e,4„ee,:„ -- J,7e. . . mcizo C63 00 3----F2 it) /4--e„ (4; ,g--.2e,