Sandy Lk Addn L3-CS040909 HAMII. TON CONSUl. TING
Civil & Environmental Engineers · Planners · Construction Managers
September 9, 2004
Mr. Keith R. Marvin, P.E.
City of Coppell
255 Parkway
Coppell, Texas 75019
RE: Sandy Lake Addition, Lot 3 Block A (McAnelly)
Construction Plan Review Comments
Dear Mr. Marvin:
We offer the following letter along with original mark-ups and two (2) sets of revised plans as a
response to your comments received September 2, 2004. We have responded to your comments as
follows:
Cover Sheet -
1. Reference the correct lot & block of the addition on the cover document, and add the plat
document into the engineering set.
RESPONSE: Noted, see attached plans.
Site Layout & Paving Plan -
1. The background screened-out information is very difficult to read on all of these sheets.
Consider using black-line copies instead.
RESPONSE: Noted, see attached plans.
2. Within the title block (applicable to all sheets) reference the appropriate addition which is Lot 3
Block A of Sandy Lake Addition.
RESPONSE: Noted, see attached plans.
3. Add the wording "Use silicone joint sealer" to the paving and joint details.
RESPONSE: Noted, see attached plans.
4. There is no reference to using lime stabilization. The City of Coppell requires a 6" lime
stabilized subgrade to which there is a variance possible, however the variance must be requested
in writing.
RESPONSE: Noted, see attached plans.
5. Make sure the subgrade is compacted to 95% density.
RESPONSE: Noted, see attached plans.
6. Our minimum pavement section is a 5-sack concrete mix design.
RESPONSE: Noted, see attached plans.
601 Harwood Road. Hurst, Texas 76054
Phone: (817) 268-0408 Fax: (817) 284-8408
Mr. Keith Marvin, P.E.
Sandy Lake Addition Comments
Page 2
September 9, 2004
Grading Plan -
1. You show the parking area to drain onto the grassy area next to the building and around to the
existing inlet in the rear. Make sure the water will get there without obstruction. This may
require the construction of a small concrete flume through the curb.
RESPONSE: Noted, see attached plans.
2. From this point on in the plans the City of Southlake details are referenced, change that to City
of Coppell.
RESPONSE: Noted, see attached plans.
Utility Plan -
1. General note for alIyour utilities- make sure you are referring to City of Coppell standards. For
example, our standard service line from the main to the meter is copper, not polyethylene pipe.
Several of these appear to reference standards from another municipality.
RESPONSE: Noted, see attached plans.
2. Your sanitary sewer line layout appears to have some curvature in it. TCEQ standards may
require a manhole at all points of curvature. Please verify and follow their requirements or
remove the curvature in the line.
RESPONSE: TCEQ allows curvature in sewer lines.
3. Are you installing a 6"or 4" service lateral? Please verify size to avoid confusion.
RESPONSE: We have referenced a 6" service on the plans.
4. You are showing a single 1" water meter for domestic service, will there be an irrigation meter
for this facility?
RESPONSE: We are now showing a 1" irrigation meter on the plans.
5. Is fire sprinkler protection required for the building? Are additional fire hydrants required
onsite? These questions should be addressed to the fire marshal.
RESPONSE: The building will not be sprinkled. See revised plans for fire hydrant coverage.
Erosion Control Plan -
1. Ensure your plans are in accordance with City of Coppell erosion control Ordinance No. 91514
and TCEQ regulatory requirements.
RESPONSE: Erosion control plan meets latest TCEQ regulations.
Detail Sheet -
1. The grate inlet should be constructed for traffic-rated loading.
RESPONSE: Noted, see attached plans.
We hope that these revisions have addressed all concerns. If you have any questions, please do
not hesitate to call.
Sincerely,
HAMILTON CONSULTING
Keith Hamilton, P.E.