Park West CC(02-2)-CS050623 (3)June 23, 2005
PK No.: 1628-05.034
Ms. Charlene La Mattina, E.I.T.
CITY OF COPPELL
255 Parkway Boulevard
Coppell, Texas 75019
Re:
PARKWEST COMMERCE CENTER
Coppell, Texas
Dear Ms. La Mattina:
This letter is to notify you that the enclosed Construction Plans have been revised in
accordance with your June 13, 2005, Review Memorandum. The following items have
been addressed as per the referenced review:
PLAT
The 24' Fire Lane should be changed to a Fire Lane & Mutual Access Easement at
the northeast corner of the property allowing access to the property to the north. The
remainder of the drawing set should reflect this access.
Response: Easement changed to Fire Lane and Access Easement.
· Provide documentation from the gas company allowing the proposed construction in
the existing "50' L.S. Gas Easement."
Response: Plans have been forwarded to the utility company for review.
Documentation allowing the construction will be provided under separate
cover when obtained.
· The water easements for the City fire hydrants that are shown as 15' x 50' should be
increased to 20' wide.
Response: Changed easements to 20' width.
· Note on the plat that "Sidewalks will be constructed at the expense of the property
owner when deemed necessary by the City Engineer."
Response: Note added as requested.
· The bar scale appears to be at a different scale than the rest of the drawing. Please
verify and correct the scale as necessary.
Response: Corrected bar scale.
Ms. Charlene La Marina
June 23,2005
Page 2
GENERAL NOTES - PAVING
· Note 2: Class "C" (3600 PSI) concrete is the standard for paving in Coppell. Refer to the most
recent version of the City of Coppell Standard Details for paving and sub-grade preparation (lime
stabilization) requirements.
Response: Changed note as requested.
· Note 12: Note that all sidewalks and accessible routes must meet all current ADA requirements.
Response: Changed note as requested.
GENERAL COMMENTS - GRADING & DRAINAGE
· Note 2: Fill is to be compacted to a minimum 95% standard proctor density within optimum to
+4%.
Response: Changed note as requested.
· Note 5: Class III RCP is the only storm drainpipe permitted by the City of Coppell Subdivision
Ordinance.
Response: Changed note as requested.
· Notes 11 & 13: Embedment and concrete for inlets and drainage structures shall conform to the
City of Coppell Standard Details.
Response: Changed note as requested.
GENERAL COMMENTS - WATER & SANITARY SEWER
· Note 1: Refer to the City of Coppell Standard Details for concrete classification requirements
pertaining to water and sanitary sewer.
Response: Changed note as requested.
· Note 2: Water mains 10" and smaller shall be PVC, C900, Class 200, DR-14. Water mains
larger than 10" shall be PVC, C900, Class 150, DR-18.
Response: Changed note as requested.
· Note 12: Pipe embedment shall be per City of Coppell Standard Details for water and sanitary
sewer.
Response: Changed note as requested.
Ms. Charlene La Ma~ina
June 23,2005
Page 3
DIMENSIONAL CONTROL PLAN
· Typical parking spaces are 19' long. A variance to 17' long parking spaces is allowed if the
conditions outlined in the zoning ordinance are met. Modify the proposed parking spaces
accordingly.
Response: Parking spaces have been revised to 17'. See attached variance letter.
· Provide dimensions for sidewalks and curve radii.
Response: Added missing sidewalk end curve radii notes.
· Provide access at the required Fire Lane & Mutual Access Easement to the property to the
north.
Response: Revised site plan to allow north access.
· Detail the tie-in to the existing brick pavem at the western edge of the property.
Response: Added detail as requested.
Response: The design for DA #11 and DA #13 was reviewed and it was determined that a
redesign to collect this area would be exceptionally difficult.
STORM SEWER PLAN
· Provide profiles and calculations for all main storm sewer lines. Includes all sanitary and water
pipe crossings. There should be a minimum of 24" of vertical clearance at crossings.
Response: Provided storm sewer profiles.
GRADING PLAN
· Coordinate with the utility owner on the adjustment of the manhole rim existing in the location of
the proposed northernmost driveway.
Response: Note added.
DRAINAGE AREA MAP
· How deep does water get in the proposed fire lane due to the 0.57 CFS by-pass?
Response: Storm design revised to remove by-pass.
· Drainage from DA #11 and DA #13 should be picked up and conveyed on-site to the storm drain
system. Do not allow this water to sheet flow to Belt Line Road.
Ms. Charlene La Marina
June 23,2005
Page 4
WATER & SANITARY SEWER PLAN
· In-line valves on all mains (including the fire lane) should be located such that the distance
between valves is a maximum of 500 feet.
Response: Valves added to ensure 500 maximum between valves.
· Locate the 5" valve at the connection-side of the "140 LF of 6" water line" instead of at the fire
hydrant-side. (Refer to the mark-ups.)
Response: Relocated valve as requested.
· Provide a drop-connection where the 6" sanitary sewer line enters the manhole at 14.7% (STA
0+38.0, Line "SS-1 ).
Response: Added drop connection in manhole.
· Refer to City of Coppell Standard Details for the FDC detail for buildings 100K SF and larger.
Response: Note added.
· Provide profiles for all main sanitary sewer lines. Include all storm and water pipe crossings.
There should be a minimum of 24" of vertical clearance at crossings.
Response: Profiled sanitary sewer. Revised design to allow 24" clearance.
· Verify the existence and size of sanitary sewer stub-outs from existing manholes. Note that if
necessary, connections should be cored or bored.
Response: Note added.
PAVING PLAN
· Belt Line Road has been designated a Primary City Image Zone. Provide stamped concrete per
the Standard Details at the driveways along this street.
Response: Revised plan as requested.
· Refer to City of Coppell Standard Details for minimum concrete and sub grade preparation (lime
stabilization) requirements. A variance to the requirements may be requested in writing.
Response: See attached variance.
DETAIL SHEET
· All details on this sheet and throughout the plans that are included in the City of Coppell
Standard Details should be removed from the construction plans. The contractor is required to
have a copy of the City of Coppell Standard Details on the job site at all times during
construction. Please note that a revised set of details was adopted in May 2005.
Response: Removed details as required.
Ms. Charlene La MaEina
June 23,2005
Page 5
EROSION CONTROL PLAN
· Show inlet protection at all on-site inlets. Additionally, show inlet protection at the inlets on Belt
Line Road as noted in the mark-ups.
Response: Revised as requested.
LEFT TURN LANE PLAN
· Consider a 40' turning radius instead of a 50' turning radius onto the property from the proposed
left hand turn lane.
Response: Revised as 40' turn radius.
· Is the median nose that makes the northern end of the median opening located properly for the
safe exit of northbound vehicles?
Response: Reviewed design of median and determined the design allows for a 50'
turning radius for vehicles exiting northbound.
· Refer to the mark-ups and City of Coppell Standard Details for the requirements of left turn lane
modifications. Recall that Belt Line Road is an image zone and placement of stamped concrete
will be required.
Response: Revised plan as required.
If you have any questions or need any additional information, please call at your earliest
convenience.
Sincerely,
SAM/jpm
1628-296