Hidden Valley-CS040416T H £ C I T Y 0 F
COP?ELL
April 16, 2004
Scott D. Caruthers, P.E.
Dowdey, Anderson & Associates
5225 Village Creek Dr., Suite 200
Piano TX 75093
RE: ttidden Valley Estates
Construction Plan Review Comments (second submiital)
Dear Mr. Camthers:
The City of Coppell Engineering Department has reviev, ed the referenced plans and has the
following comments to offer:
Plat -
1. Show comer clips as required for ADA accessible ramps at the locations indicated on the plans.
Paving Plan & Profile -
Sheet 1 -
1. Indicate with a note on the plans to reconstruct the curb and gutter and to repair the asphalt as
necessary for thc inlet transnion in the existing Hidden Valley Drive to City of Coppell
standards.
2. Show on the Paving Plan the ADA accessible ramps that are to be constructed with the paving.
3. The existing drive approach Ibr the lot that is entitled Phillips Addition 111, Lot 1 typically
would not be allowed to cross the property line, however, in this case we have no choice but to
alloxv it. I suggest you include something in the deeds for Lots 3 & 9 stating that the driveway
is an existing condition and shall be allowed to cotmnue as such. It is in the public right-of-
way, but is in front of'these adjacent lots.
Sheet 2 -
1. Again, add the ramps to be constructed with pax ement.
2. The 4% slope at the eyebrow ntay cause an issue with ADA compliance. You may want to think
about having a portion of that at 2% to comply with ADA rcgulations.
Drainage Area Map -
1. You have increased the size of some of the inlels and relocated them, and they appear to pick up
the water better than belbre. There may still be a small volume going down Hidden Valley
Drive to the south that is unintended. If you feel it is correct and adequate, it is acceptable.
Water & Sanitary Sewer Plan -
1. We show on as-built plans an existing valve at the end of the existing Hidden Valley Drive,
please show that on your plans if it actually is there. That will allow the shutdown of water
service to make the connection to the existing 6" waterline easier.
2. Water service to the Phillips Addition III, Lot l should be transferred to the new 8" waterline.
3. We request you send the easement documents, if prepared, for the portion of the waterline that
previously went through to the Meadowcreek Road waterline.
Grading Plans -
1. We have discussed this before and I think we have reached agreement, but let me reiterate -
there are two lots in Northlake Woodlands, Section 6 that have driveways that back up to this
wall. I suggest raising the wall 6" in the area of the driveway while ensuring that no drainage is
blocked from those properties, or work with the homeowners to install a pre-cast wheel stop in
those driveways. We would accept either of those options.
Erosion Control Plans -
1. The City will need a copy of the executed NOI before the pre-construction meeting (with the
permit application).
Please make the necessary changes as indicated above. The City requires these marked-up plans and
three sets of revised plans to be kept for its use. Submit the additional number of revised sets you
need stamped for your use and contractor/subcontractor use. Contractors must have a stamped set
of constmction drawings on the job site at ali times.
At this point in order to proceed with permit issuance, ensure that all impact and inspection fees are
paid. Construction inspection fees are calculated at 2% of contract cost for private work and 4% of
contract cost for work in the public right-of-way. Page Three of the Constmction Development
Permit form is a spreadsheet for your convenience in showing those costs, but you should also
provide copies of the contracts showing the proposed costs. If you have any questions, please
contact this office at your convenience.
Sincerely,
Keith R. Marvin, P.E.
Civil Engineer
Office: 972/304-7044
Fax: 972/304-3570