05-0673 Review letter No 2a 102907
City of Yelm
Community Development Department
105 Yelm Avenue West
P.O. Box 479
Yelm, WA 98597
October 29, 2007
Hatton, Godat and Pantier
1840 Barnes Boulevard S.W.
Tumwater, WA 98512
RE: Del’s Farm Supply – SPR-05-0673 -YL
CLARIFICATION OF Review No. 2 of Civil Construction Documents
Mr. Spiller
You contacted me October 25th to discuss the comment letter dated October 23, 2007. You were concerned with comments 11-19 of the letter. I have reviewed the comments and have responded
to each one below. I have listed the original comment first and added any additional comments after the fact.
Engineering Comments:
Item number 24 from the previous review # 1comments list, the infiltration pond elevation is at 346 this only 2 feet higher than the high ground water. This does not meet the City of
Yelm or the 1992 D.O.E. requirements. This is a valid comment.
Item number 30 from the previous review # 1 comments list, the bottom of the wet pond elevation does not meet the required 6 feet of separation between the high ground water mark and
bottom of wet pond. This does not meet the City of Yelm or the 1992 D.O.E. requirements. The wet pond does not need to meet the same required 6 feet of separation as the infiltration
pond. Please make sure the wet pond is designed with a liner that meets the stormwater manual.
Item # 44 from the previous review # 1 comments, the pavement design should be submitted on the current set of civil plans being reviewed. This is a valid comment. It was not submitted
under a separate cover as stated in the response letter.
Item # 45 from the previous review # 1 comments, the wet pond does not meet separation requirements. Please see response from item No 12.
Item # 49 from the previous review # 1 comments, should this be included in the step sewer plans? Step sewer has an end of line clean out, water lines have blow-offs. The call out
should be shown on the design not the system map.
Item # 66 from the previous review # 1 comments, clean out detail # 7-20 has been added to sheet 11 of 13 not, sheet 13. The detail was added to sheet 11. This is acceptable as long
as it is in the plan set.
Item # 71 from the previous review # 1 comments, please add Backflow Devices Detail to the water detail sheet 12 of 13. This is a valid comment. Please add to the plan.
In the Drainage Report II Section 1 – Project Description Storm Water BMP’s you describe the use of a Bio-Infiltration Swale. Has this been eliminated from the project? This is a valid
comment.
Note 7 of Sheet 4 of 13 Grading and Drainage Plan sheet, mentions the use of an oil / water separator. I do not see one implemented on the plans. Please add the Oil / Water separator
to the plan sheet. It appears the reviewer took the standard note as a direction to the contractor. This comment should be omitted from the review.
If you have any additional questions or comments please do not hesitate to call or contact me at jimg@ci.yelm.wa.us.
Community Development Department
Respectfully,
Jim Gibson P.E.
Development Review Engineer
cc. Applicant: DFS Properties, LLC, 10N Fairway Drive East, Hoodsport, WA 98548
enc. Redlined Landscape Plans