CIRCULAR

No.PCB/T1/17/80                                                                                         Date: 30.4.1998

The Board, in its 117^th meeting, has revised the norms for establishment/operation of stone
crushers with effect from 1^st May 1998.  Applications received upto 30.4.1998 shall be
processed as per the site suitability criteria prevalent then.

1.   NOC/Consent to Establish:

      1.1.  Suitability of site
              N.O.C/Consent to Establish shall be granted for a stone crusher only if the site
              suitability criteria (1.1.1 to 1.1.6) are satisfied. Otherwise the clearance shall be
              refused.  Those who do not satisfy the criteria may be advised not to apply so as to
              avoid wastage of effort.
              1.1.1.   To establish a crusher unit with a crushing capacity , 30 HP, the applicant
                            should own the site at least to an extent of 0.5 hectare.  For crusher unit with
                            crushing capacity > 30 HP, the applicant should own the site at least to an
                            extent of 1 hectare.  The capacities (HP) of the auxiliary unit like screen,
                            conveyor etc. are not taken into account.
              1.1.2.    The crusher unit should be located within the applicants own site providing a
                            minimum distance of30 m in the case of crushers of capacity < 30 HP and
                            50 m in the case of crushers of capacity > 30 HP from the centre of the
                            crusher unit to the boundary of the site.
              1.1.3.    There should be a clear distance of 250 m from the center of the proposed
                            crusher unit to the periphery of the structure of any residence, public building or
                            place of worship.  There is no exemption for own buildings.
              1.1.4.    There should be a clear distance of250 m from the center of the proposed
                            crusher to State or National Highway.
              1.1.5.    There should be a minimum clear center to center distance of 500 m from the
                             proposed crusher to existing crushers.  Crushers of which NOC/Consent to
                             Establish is already given but yet to start construction shall be considered
                             existing crushers for the purpose.
              1.1.6.     Permanent source of adequate water supply (minimum 6000 l/day for
                             crushers of capacity < 30 HP and 10,000 l/day for those >30 HP) has to be
                             identified at the site and specified in the NOC/Consent to Establish.

      1.2.  Pollution control measures
             1.2.1.  Crushers, classifiers, screens and other noise and or dust producing units
                          should be housed in buildings with wall of minimum 23 m thickness and with
                          suitable roofing.  (In the light of this requirement, the requirement of wind
                          breaking walls is deleted.
             1.2.2.   Dust suppression system with water spray and sprinkling should be provided.
             1.2.3.   Dust extraction of collection system should be provided at crushers, transfer
                          points, screens etc.
             1.2.4.   Water storage facility of at least 2 days capacity should be provided.
             1.2.5.   The roads inside the crusher premises should be tarred or concreted.
             1.2.6.   Facility for regular cleaning and wetting of the ground should be provided.
             1.2.7.   Trees of suitable species should be planted to develop a green belt within and
                          along the boundary of the premises.
             1.2.8.   The crusher should not be operated between 6.00 p.m. and 6.00 a.m.

      1.3.  Standards
              The following standards shall be specified in the NOC/Consent to Establish.  The
              standards may be made more stringent in deserving cases.
              1.3.1.     The suspended particulate matter in ambient air at 40m from the centre of
                             the crusher should not exceed 600 mg/m^3.
              1.3.2.     The sound level (Leq) at 1 m outside the boundary of the site should not
                             exceed 55dB(A).

      1.4.   General:
              1.4.1.     The capacity (HP) of the crusher (total and of crushing units) and    
                             production capacity (“t/month’) should be specified in the NOC/Consent to
                             Establish.
              1.4.2.     A sign board showing the name of the crusher and its capacity should be
                             displayed at the entrance of the site.
              1.4.3.     The validity of NOC/Consent to Establish shall be for a period of two years
                             from the date of issue.  At the end of the validity period of the construction is
                             in progress the same may be renewed based on application received for
                             renewal of the consent.  If construction is yet to be started, the applicant
                             may apply afresh for NOC/Consent to Establish and the same shall be
                             considered on the basis of the situation prevalent then.

2.        Consent to Operate:
           2.1.         In the case of new crushers, Consent to Operate shall be issued only if the
                          applicant has provided measures, to comply with conditions of NOC/Consent
                           to Establish.
           2.2.         In the case of existing crusher, consent to operate will be issued/renewed only
                           if the requirements under 1.2 are satisfied or facilities therefore are provided. 
                           A compliance time upto 30.4.1999 shall be allowable for satisfying
                           requirements under 1.2.1.
           2.3.         Consent to operate will be issued only for the capacity stated in the
                           NOC/Consent to establish.
           2.4.         For expansion of capacity, application has to be made for ‘consent to
                           establish’. Expansion will not be allowed for crushers not meeting the
                           requirements under 1.1.

                                                                                                                   MEMBER SECRETARY

Amendments to Norms applicable to existing stone crushers established before 1.5.1998.