8352 civil review no 1 072204
City of Yelm
Community Development Department
105 Yelm Avenue West
P.O. Box 479
Yelm, WA 98597
July 23, 2004
Geoff Sherwin
Apex Engineering PLLC
2601 S 35th, Suite 200
Tacoma, WA 98409
RE: Civil Engineering Review No. 1 – Napa Auto Parts Remodel and Expansion
City of Yelm Project No SPR-03-8352-YL
Mr. Sherwin:
I have completed the first review of the civil engineering plans that were submitted with your land use application. These comments take into account the Conditions of Approval issued
for the land use approval. The site plan will have to be revised to be in conformance with the land use approval. Please review the following comments and revise the site plan as required
to meet them.
Site Plan and Conditions of Approval:
Yelm Ave. access to be right in/right out only. Approval #3
Need Right-of-way dedication for Clark Road. Approval #5
Clark road access not acceptable as drawn. This plan shows conflicting driveway, parking areas and pedestrian paths. Approval #15
Oil/water separator is required for all floor drains leading to the sewer system. Approval #9
Minimum of 30 parking stalls, 8 of which may be designated compact. Two of the stalls shall be handicap accessible, with one van accessible. Approval #14
The applicant shall enhance the visual quality of the corner in compliance with Design Guideline I.F.(1). Approval #16
All buildings shall have a paved pedestrian path from street sidewalk to the main entry, and provide pathways from parking lots to the main entry. Approval #17
A detailed landscape plan is required as part of civil plan approval, and shall include: Approval # 22 – 25
Type I landscape buffer along the southern property line, adjacent to the residential use.
Type II landscape buffer along the remaining perimeter property lines, and adjacent to buildings.
Type III landscaping with frontage improvements.
Type IV landscaping is required in parking areas.
Refuse container screening shall be of a material and design compatible with the overall architectural theme of the associated structure, shall be at least as high as the refuse container,
and shall in no case be less than six-feet. A six-foot wall or fence shall enclose any outdoor refuse collection point. The fence shall be a solid material such as wood or masonry,
and shall be designed per the City of Yelm Development guidelines. Approval #26
Stormwater Plan:
The City of Yelm is no longer using a “bypass” system for the wet tank. Please revise the drawings to show all the stormwater being routed through the wet tank.
The wet tank will have to be leak tested after installation. I would suggest that a different material be used for construct the vault. In the past CMP pipe construction will not meet
the requirements of a leak test.
The conveyance pipe between CB 1 and CB 2 is routed under the carport of building 2. This pipe cannot be located under a structure.
Show building drywells on the plan and add detail for construction of drywells.
The site area is 0.87 acres based on the public records. In the stormwater calculations you show the basin area being 0.61 acres. Please include a table showing pervious and impervious
areas of the site.
All stormwater systems must be at least 10’ from all property lines and buildings.
The washed rock back fill for the infiltration trenches should be 1” to maximum of 2 ½”.
The perforations in the gallery should be in a location to allow all the water to exit the pipe.
The outlet of the wet tank should be at the 6-month water level of the tank. With the outlet at 331.00 the wet tank will empty after each storm.
Add cleanouts to the ends of each pipe in the wet tank. If a catch basin is already located in that position a clean out will not be required.
Grading Plan:
The existing drive accessed shown is much wider than the drive isle proposed by this project. We cannot have cars turning into the driveway access and hitting curbs, landscaping or
parked cars. The plans need to address how this is to be designed or reconstructed to eliminate this conflict.
Is the existing parking curb along Clark Road going to be removed? Is their any other demolition going to take place on site?
Water Plan:
The existing water meter is located in the drive isle. A load bearing meter box will be required.
The second meter will be tapped off of the existing service line.
An irrigation meter will be required for irrigation system.
A DDCV will be required to be installed behind each water meter on this project. The DDCV will need to be installed, certified and approved before a water meter will be set.
Show easements for water system on the construction documents.
Add standard water notes to the construction documents.
Submit water use calculations for both proposed uses.
Sewer Plan:
Replace notes with current sewer notes.
Please submit sewer calculations for review. These calculations will be used to size the STEP tank. The minimum STEP tank size for a commercial building shall be 1500 gallons. This
project has 2 buildings that should have a min. of 1500 gallons each, or may be combined into a larger tank.
The STEP tank needs to be located no closer to the property line 15’.
The STEP tank depth to invert should be no deeper than 5’.
A hose bib needs to be located within 50’ of the STEP tank for maintenance.
Show the location of the STEP tank controller.
The side sewer has a min. slope of 2%.
A clean out will be required every 50’ of the side sewer.
Show easements for sewer system on the construction documents.
Landscape Plan:
See above section in Site Plan and Conditions of Approval.
Please review and revise the civil engineering documents to address the above referenced comments. When the project is resubmitted you will be required to submit 4 sets of plans, 2
stormwater reports and a letter addressing how these comments have been met. If you have any additional questions of comments please do not hesitate to call or contact me at jimg@ci.yelm.wa.us.
Community Development Department
Respectfully,
Jim Gibson
Development Review Engineer
C Lipke, Metcalf, Rousch
PO Box 4805
Spanaway, WA 98387