Virginia Administrative Code › Title 9 - ENVIRONMENT › Agency 25 - STATE WATER CONTROL BOARD › Chapter 790 - VIRGINIA POLLUTANT DISCHARGE ELIMINATION SYSTEM (VPDES) PERMIT REGULATION › Part I - Procedural Regulations › Article 2 - Procedures › Section 9VAC25-790-120 - Construction drawings (plans)

Current through Register Vol. 40, No. 24, July 15, 2024
A.
					 Construction drawings (plans) for sewerage systems or treatment works
					 improvements for which a technical evaluation is required shall provide the
					 information necessary to determine that the owner's final plans,
					 specifications, and other documents satisfy (i) requirements established by
					 these regulations and engineering standards of practice; and (ii) the minimum
					 requirements and limiting factors established in the owner's approved
					 preliminary engineering proposal. The final plans should include:
B. Final engineering documents. Drawings,
					 plans, specifications and other engineering documents that are submitted to the
					 area engineer for a technical evaluation shall be in substantial compliance
					 with this chapter prior to issuance of a CTC by the director. Engineering
					 documents may be submitted by the owner to the area engineer following the
					 preliminary engineering conference, or following a technical evaluation of the
					 preliminary engineering proposal if required. Up to four copies shall be
					 submitted to the area engineer for non-Virginia Revolving Loan Fund funded
					 projects and up to five copies shall be submitted for projects financed through
					 the Virginia Revolving Loan Fund. The original of the letter of submittal with
					 appropriate signature(s) shall accompany the engineering documents. The letter
					 of submittal should identify any necessary actions to be taken by the area
					 engineer to expedite evaluation of the submitted documents.
All drawings, specifications, engineer's reports and
						other documents submitted for evaluation shall be prepared by or under the
						supervision of appropriately licensed professionals, legally qualified to
						practice in Virginia, in accordance with the provisions of §§
						54.1-400 to 54.1-411 of the Code of Virginia inclusive.
All submitted plans for sewerage systems or treatment
						works shall bear a suitable title showing the name of the municipality, sewer
						district, institution or other owner and shall show the scale in feet, a
						graphical scale, the north point, date and the name of the appropriate licensed
						professional. Also, each plan sheet shall bear the same general title
						identifying the overall project, and each shall be numbered. Appropriate
						subtitles shall be included on the individual sheets. The plans shall be clear
						and legible. They shall be drawn to a scale that will permit all necessary
						information to be plainly shown. The size of the plans should be no larger than
						36 inches by 48 inches. The datum used should be indicated. Locations of all
						special features, when made, shall be shown on the plans. Logs of test borings
						should be given either on plans or in the specifications. Detail plans shall
						consist of plan views, elevations, sections, and supplementary views which,
						together with the specifications and general layouts, provide the working
						information for the contract and construction of the works. The plans shall
						include dimensions and relative elevations of structures, the location and
						outline form of equipment, location and size of piping, water levels, ground
						elevations, and erosion control abatement facilities. Data shall be provided
						for proposed additions of flow to existing sewerage systems indicating that the
						additional sewage flow from the proposed project will have no adverse impact on
						the operation of downstream facilities.
C. Sewerage systems. Plans submitted for new
					 construction or substantial modification (increasing flow capacity by more than
					 25%) of sewage collection piping shall include the following: the location,
					 size, type and direction of flow of all existing and proposed sanitary sewers
					 involved in the project.
1. Detailed plans
					 when submitted for evaluation shall provide complete and properly scaled
					 graphical depictions of design information. Profiles shall have a horizontal
					 scale of not more than 100 feet to the inch and a vertical scale of not more
					 than 10 feet to the inch. The plan view shall be drawn to a corresponding
					 horizontal scale. Plans and profiles shall show:
a. Location of streets and sewers with an
					 identification system.
b. Ground
					 surface elevations and manhole stationing.
c. Invert elevations of sewers at each
					 manhole.
d. Size and grade of sewer
					 between adjacent manholes.
e. Any
					 special construction features.